queue.c revision 203004
1/* 2 * Copyright (c) 1998-2009 Sendmail, Inc. and its suppliers. 3 * All rights reserved. 4 * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved. 5 * Copyright (c) 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * By using this file, you agree to the terms and conditions set 9 * forth in the LICENSE file which can be found at the top level of 10 * the sendmail distribution. 11 * 12 */ 13 14#include <sendmail.h> 15#include <sm/sem.h> 16 17SM_RCSID("@(#)$Id: queue.c,v 8.987 2009/12/18 17:08:01 ca Exp $") 18 19#include <dirent.h> 20 21# define RELEASE_QUEUE (void) 0 22# define ST_INODE(st) (st).st_ino 23 24# define sm_file_exists(errno) ((errno) == EEXIST) 25 26# if HASFLOCK && defined(O_EXLOCK) 27# define SM_OPEN_EXLOCK 1 28# define TF_OPEN_FLAGS (O_CREAT|O_WRONLY|O_EXCL|O_EXLOCK) 29# else /* HASFLOCK && defined(O_EXLOCK) */ 30# define TF_OPEN_FLAGS (O_CREAT|O_WRONLY|O_EXCL) 31# endif /* HASFLOCK && defined(O_EXLOCK) */ 32 33#ifndef SM_OPEN_EXLOCK 34# define SM_OPEN_EXLOCK 0 35#endif /* ! SM_OPEN_EXLOCK */ 36 37/* 38** Historical notes: 39** QF_VERSION == 4 was sendmail 8.10/8.11 without _FFR_QUEUEDELAY 40** QF_VERSION == 5 was sendmail 8.10/8.11 with _FFR_QUEUEDELAY 41** QF_VERSION == 6 was sendmail 8.12 without _FFR_QUEUEDELAY 42** QF_VERSION == 7 was sendmail 8.12 with _FFR_QUEUEDELAY 43** QF_VERSION == 8 is sendmail 8.13 44*/ 45 46#define QF_VERSION 8 /* version number of this queue format */ 47 48static char queue_letter __P((ENVELOPE *, int)); 49static bool quarantine_queue_item __P((int, int, ENVELOPE *, char *)); 50 51/* Naming convention: qgrp: index of queue group, qg: QUEUEGROUP */ 52 53/* 54** Work queue. 55*/ 56 57struct work 58{ 59 char *w_name; /* name of control file */ 60 char *w_host; /* name of recipient host */ 61 bool w_lock; /* is message locked? */ 62 bool w_tooyoung; /* is it too young to run? */ 63 long w_pri; /* priority of message, see below */ 64 time_t w_ctime; /* creation time */ 65 time_t w_mtime; /* modification time */ 66 int w_qgrp; /* queue group located in */ 67 int w_qdir; /* queue directory located in */ 68 struct work *w_next; /* next in queue */ 69}; 70 71typedef struct work WORK; 72 73static WORK *WorkQ; /* queue of things to be done */ 74static int NumWorkGroups; /* number of work groups */ 75static time_t Current_LA_time = 0; 76 77/* Get new load average every 30 seconds. */ 78#define GET_NEW_LA_TIME 30 79 80#define SM_GET_LA(now) \ 81 do \ 82 { \ 83 now = curtime(); \ 84 if (Current_LA_time < now - GET_NEW_LA_TIME) \ 85 { \ 86 sm_getla(); \ 87 Current_LA_time = now; \ 88 } \ 89 } while (0) 90 91/* 92** DoQueueRun indicates that a queue run is needed. 93** Notice: DoQueueRun is modified in a signal handler! 94*/ 95 96static bool volatile DoQueueRun; /* non-interrupt time queue run needed */ 97 98/* 99** Work group definition structure. 100** Each work group contains one or more queue groups. This is done 101** to manage the number of queue group runners active at the same time 102** to be within the constraints of MaxQueueChildren (if it is set). 103** The number of queue groups that can be run on the next work run 104** is kept track of. The queue groups are run in a round robin. 105*/ 106 107struct workgrp 108{ 109 int wg_numqgrp; /* number of queue groups in work grp */ 110 int wg_runners; /* total runners */ 111 int wg_curqgrp; /* current queue group */ 112 QUEUEGRP **wg_qgs; /* array of queue groups */ 113 int wg_maxact; /* max # of active runners */ 114 time_t wg_lowqintvl; /* lowest queue interval */ 115 int wg_restart; /* needs restarting? */ 116 int wg_restartcnt; /* count of times restarted */ 117}; 118 119typedef struct workgrp WORKGRP; 120 121static WORKGRP volatile WorkGrp[MAXWORKGROUPS + 1]; /* work groups */ 122 123#if SM_HEAP_CHECK 124static SM_DEBUG_T DebugLeakQ = SM_DEBUG_INITIALIZER("leak_q", 125 "@(#)$Debug: leak_q - trace memory leaks during queue processing $"); 126#endif /* SM_HEAP_CHECK */ 127 128/* 129** We use EmptyString instead of "" to avoid 130** 'zero-length format string' warnings from gcc 131*/ 132 133static const char EmptyString[] = ""; 134 135static void grow_wlist __P((int, int)); 136static int multiqueue_cache __P((char *, int, QUEUEGRP *, int, unsigned int *)); 137static int gatherq __P((int, int, bool, bool *, bool *, int *)); 138static int sortq __P((int)); 139static void printctladdr __P((ADDRESS *, SM_FILE_T *)); 140static bool readqf __P((ENVELOPE *, bool)); 141static void restart_work_group __P((int)); 142static void runner_work __P((ENVELOPE *, int, bool, int, int)); 143static void schedule_queue_runs __P((bool, int, bool)); 144static char *strrev __P((char *)); 145static ADDRESS *setctluser __P((char *, int, ENVELOPE *)); 146#if _FFR_RHS 147static int sm_strshufflecmp __P((char *, char *)); 148static void init_shuffle_alphabet __P(()); 149#endif /* _FFR_RHS */ 150 151/* 152** Note: workcmpf?() don't use a prototype because it will cause a conflict 153** with the qsort() call (which expects something like 154** int (*compar)(const void *, const void *), not (WORK *, WORK *)) 155*/ 156 157static int workcmpf0(); 158static int workcmpf1(); 159static int workcmpf2(); 160static int workcmpf3(); 161static int workcmpf4(); 162static int randi = 3; /* index for workcmpf5() */ 163static int workcmpf5(); 164static int workcmpf6(); 165#if _FFR_RHS 166static int workcmpf7(); 167#endif /* _FFR_RHS */ 168 169#if RANDOMSHIFT 170# define get_rand_mod(m) ((get_random() >> RANDOMSHIFT) % (m)) 171#else /* RANDOMSHIFT */ 172# define get_rand_mod(m) (get_random() % (m)) 173#endif /* RANDOMSHIFT */ 174 175/* 176** File system definition. 177** Used to keep track of how much free space is available 178** on a file system in which one or more queue directories reside. 179*/ 180 181typedef struct filesys_shared FILESYS; 182 183struct filesys_shared 184{ 185 dev_t fs_dev; /* unique device id */ 186 long fs_avail; /* number of free blocks available */ 187 long fs_blksize; /* block size, in bytes */ 188}; 189 190/* probably kept in shared memory */ 191static FILESYS FileSys[MAXFILESYS]; /* queue file systems */ 192static const char *FSPath[MAXFILESYS]; /* pathnames for file systems */ 193 194#if SM_CONF_SHM 195 196/* 197** Shared memory data 198** 199** Current layout: 200** size -- size of shared memory segment 201** pid -- pid of owner, should be a unique id to avoid misinterpretations 202** by other processes. 203** tag -- should be a unique id to avoid misinterpretations by others. 204** idea: hash over configuration data that will be stored here. 205** NumFileSys -- number of file systems. 206** FileSys -- (arrary of) structure for used file systems. 207** RSATmpCnt -- counter for number of uses of ephemeral RSA key. 208** QShm -- (array of) structure for information about queue directories. 209*/ 210 211/* 212** Queue data in shared memory 213*/ 214 215typedef struct queue_shared QUEUE_SHM_T; 216 217struct queue_shared 218{ 219 int qs_entries; /* number of entries */ 220 /* XXX more to follow? */ 221}; 222 223static void *Pshm; /* pointer to shared memory */ 224static FILESYS *PtrFileSys; /* pointer to queue file system array */ 225int ShmId = SM_SHM_NO_ID; /* shared memory id */ 226static QUEUE_SHM_T *QShm; /* pointer to shared queue data */ 227static size_t shms; 228 229# define SHM_OFF_PID(p) (((char *) (p)) + sizeof(int)) 230# define SHM_OFF_TAG(p) (((char *) (p)) + sizeof(pid_t) + sizeof(int)) 231# define SHM_OFF_HEAD (sizeof(pid_t) + sizeof(int) * 2) 232 233/* how to access FileSys */ 234# define FILE_SYS(i) (PtrFileSys[i]) 235 236/* first entry is a tag, for now just the size */ 237# define OFF_FILE_SYS(p) (((char *) (p)) + SHM_OFF_HEAD) 238 239/* offset for PNumFileSys */ 240# define OFF_NUM_FILE_SYS(p) (((char *) (p)) + SHM_OFF_HEAD + sizeof(FileSys)) 241 242/* offset for PRSATmpCnt */ 243# define OFF_RSA_TMP_CNT(p) (((char *) (p)) + SHM_OFF_HEAD + sizeof(FileSys) + sizeof(int)) 244int *PRSATmpCnt; 245 246/* offset for queue_shm */ 247# define OFF_QUEUE_SHM(p) (((char *) (p)) + SHM_OFF_HEAD + sizeof(FileSys) + sizeof(int) * 2) 248 249# define QSHM_ENTRIES(i) QShm[i].qs_entries 250 251/* basic size of shared memory segment */ 252# define SM_T_SIZE (SHM_OFF_HEAD + sizeof(FileSys) + sizeof(int) * 2) 253 254static unsigned int hash_q __P((char *, unsigned int)); 255 256/* 257** HASH_Q -- simple hash function 258** 259** Parameters: 260** p -- string to hash. 261** h -- hash start value (from previous run). 262** 263** Returns: 264** hash value. 265*/ 266 267static unsigned int 268hash_q(p, h) 269 char *p; 270 unsigned int h; 271{ 272 int c, d; 273 274 while (*p != '\0') 275 { 276 d = *p++; 277 c = d; 278 c ^= c<<6; 279 h += (c<<11) ^ (c>>1); 280 h ^= (d<<14) + (d<<7) + (d<<4) + d; 281 } 282 return h; 283} 284 285 286#else /* SM_CONF_SHM */ 287# define FILE_SYS(i) FileSys[i] 288#endif /* SM_CONF_SHM */ 289 290/* access to the various components of file system data */ 291#define FILE_SYS_NAME(i) FSPath[i] 292#define FILE_SYS_AVAIL(i) FILE_SYS(i).fs_avail 293#define FILE_SYS_BLKSIZE(i) FILE_SYS(i).fs_blksize 294#define FILE_SYS_DEV(i) FILE_SYS(i).fs_dev 295 296 297/* 298** Current qf file field assignments: 299** 300** A AUTH= parameter 301** B body type 302** C controlling user 303** D data file name 304** d data file directory name (added in 8.12) 305** E error recipient 306** F flag bits 307** G free (was: queue delay algorithm if _FFR_QUEUEDELAY) 308** H header 309** I data file's inode number 310** K time of last delivery attempt 311** L Solaris Content-Length: header (obsolete) 312** M message 313** N number of delivery attempts 314** P message priority 315** q quarantine reason 316** Q original recipient (ORCPT=) 317** r final recipient (Final-Recipient: DSN field) 318** R recipient 319** S sender 320** T init time 321** V queue file version 322** X free (was: character set if _FFR_SAVE_CHARSET) 323** Y free (was: current delay if _FFR_QUEUEDELAY) 324** Z original envelope id from ESMTP 325** ! deliver by (added in 8.12) 326** $ define macro 327** . terminate file 328*/ 329 330/* 331** QUEUEUP -- queue a message up for future transmission. 332** 333** Parameters: 334** e -- the envelope to queue up. 335** announce -- if true, tell when you are queueing up. 336** msync -- if true, then fsync() if SuperSafe interactive mode. 337** 338** Returns: 339** none. 340** 341** Side Effects: 342** The current request is saved in a control file. 343** The queue file is left locked. 344*/ 345 346void 347queueup(e, announce, msync) 348 register ENVELOPE *e; 349 bool announce; 350 bool msync; 351{ 352 register SM_FILE_T *tfp; 353 register HDR *h; 354 register ADDRESS *q; 355 int tfd = -1; 356 int i; 357 bool newid; 358 register char *p; 359 MAILER nullmailer; 360 MCI mcibuf; 361 char qf[MAXPATHLEN]; 362 char tf[MAXPATHLEN]; 363 char df[MAXPATHLEN]; 364 char buf[MAXLINE]; 365 366 /* 367 ** Create control file. 368 */ 369 370#define OPEN_TF do \ 371 { \ 372 MODE_T oldumask = 0; \ 373 \ 374 if (bitset(S_IWGRP, QueueFileMode)) \ 375 oldumask = umask(002); \ 376 tfd = open(tf, TF_OPEN_FLAGS, QueueFileMode); \ 377 if (bitset(S_IWGRP, QueueFileMode)) \ 378 (void) umask(oldumask); \ 379 } while (0) 380 381 382 newid = (e->e_id == NULL) || !bitset(EF_INQUEUE, e->e_flags); 383 (void) sm_strlcpy(tf, queuename(e, NEWQFL_LETTER), sizeof(tf)); 384 tfp = e->e_lockfp; 385 if (tfp == NULL && newid) 386 { 387 /* 388 ** open qf file directly: this will give an error if the file 389 ** already exists and hence prevent problems if a queue-id 390 ** is reused (e.g., because the clock is set back). 391 */ 392 393 (void) sm_strlcpy(tf, queuename(e, ANYQFL_LETTER), sizeof(tf)); 394 OPEN_TF; 395 if (tfd < 0 || 396#if !SM_OPEN_EXLOCK 397 !lockfile(tfd, tf, NULL, LOCK_EX|LOCK_NB) || 398#endif /* !SM_OPEN_EXLOCK */ 399 (tfp = sm_io_open(SmFtStdiofd, SM_TIME_DEFAULT, 400 (void *) &tfd, SM_IO_WRONLY, 401 NULL)) == NULL) 402 { 403 int save_errno = errno; 404 405 printopenfds(true); 406 errno = save_errno; 407 syserr("!queueup: cannot create queue file %s, euid=%d, fd=%d, fp=%p", 408 tf, (int) geteuid(), tfd, tfp); 409 /* NOTREACHED */ 410 } 411 e->e_lockfp = tfp; 412 upd_qs(e, 1, 0, "queueup"); 413 } 414 415 /* if newid, write the queue file directly (instead of temp file) */ 416 if (!newid) 417 { 418 /* get a locked tf file */ 419 for (i = 0; i < 128; i++) 420 { 421 if (tfd < 0) 422 { 423 OPEN_TF; 424 if (tfd < 0) 425 { 426 if (errno != EEXIST) 427 break; 428 if (LogLevel > 0 && (i % 32) == 0) 429 sm_syslog(LOG_ALERT, e->e_id, 430 "queueup: cannot create %s, euid=%d: %s", 431 tf, (int) geteuid(), 432 sm_errstring(errno)); 433 } 434#if SM_OPEN_EXLOCK 435 else 436 break; 437#endif /* SM_OPEN_EXLOCK */ 438 } 439 if (tfd >= 0) 440 { 441#if SM_OPEN_EXLOCK 442 /* file is locked by open() */ 443 break; 444#else /* SM_OPEN_EXLOCK */ 445 if (lockfile(tfd, tf, NULL, LOCK_EX|LOCK_NB)) 446 break; 447 else 448#endif /* SM_OPEN_EXLOCK */ 449 if (LogLevel > 0 && (i % 32) == 0) 450 sm_syslog(LOG_ALERT, e->e_id, 451 "queueup: cannot lock %s: %s", 452 tf, sm_errstring(errno)); 453 if ((i % 32) == 31) 454 { 455 (void) close(tfd); 456 tfd = -1; 457 } 458 } 459 460 if ((i % 32) == 31) 461 { 462 /* save the old temp file away */ 463 (void) rename(tf, queuename(e, TEMPQF_LETTER)); 464 } 465 else 466 (void) sleep(i % 32); 467 } 468 if (tfd < 0 || (tfp = sm_io_open(SmFtStdiofd, SM_TIME_DEFAULT, 469 (void *) &tfd, SM_IO_WRONLY_B, 470 NULL)) == NULL) 471 { 472 int save_errno = errno; 473 474 printopenfds(true); 475 errno = save_errno; 476 syserr("!queueup: cannot create queue temp file %s, uid=%d", 477 tf, (int) geteuid()); 478 } 479 } 480 481 if (tTd(40, 1)) 482 sm_dprintf("\n>>>>> queueing %s/%s%s >>>>>\n", 483 qid_printqueue(e->e_qgrp, e->e_qdir), 484 queuename(e, ANYQFL_LETTER), 485 newid ? " (new id)" : ""); 486 if (tTd(40, 3)) 487 { 488 sm_dprintf(" e_flags="); 489 printenvflags(e); 490 } 491 if (tTd(40, 32)) 492 { 493 sm_dprintf(" sendq="); 494 printaddr(sm_debug_file(), e->e_sendqueue, true); 495 } 496 if (tTd(40, 9)) 497 { 498 sm_dprintf(" tfp="); 499 dumpfd(sm_io_getinfo(tfp, SM_IO_WHAT_FD, NULL), true, false); 500 sm_dprintf(" lockfp="); 501 if (e->e_lockfp == NULL) 502 sm_dprintf("NULL\n"); 503 else 504 dumpfd(sm_io_getinfo(e->e_lockfp, SM_IO_WHAT_FD, NULL), 505 true, false); 506 } 507 508 /* 509 ** If there is no data file yet, create one. 510 */ 511 512 (void) sm_strlcpy(df, queuename(e, DATAFL_LETTER), sizeof(df)); 513 if (bitset(EF_HAS_DF, e->e_flags)) 514 { 515 if (e->e_dfp != NULL && 516 SuperSafe != SAFE_REALLY && 517 SuperSafe != SAFE_REALLY_POSTMILTER && 518 sm_io_setinfo(e->e_dfp, SM_BF_COMMIT, NULL) < 0 && 519 errno != EINVAL) 520 { 521 syserr("!queueup: cannot commit data file %s, uid=%d", 522 queuename(e, DATAFL_LETTER), (int) geteuid()); 523 } 524 if (e->e_dfp != NULL && 525 SuperSafe == SAFE_INTERACTIVE && msync) 526 { 527 if (tTd(40,32)) 528 sm_syslog(LOG_INFO, e->e_id, 529 "queueup: fsync(e->e_dfp)"); 530 531 if (fsync(sm_io_getinfo(e->e_dfp, SM_IO_WHAT_FD, 532 NULL)) < 0) 533 { 534 if (newid) 535 syserr("!552 Error writing data file %s", 536 df); 537 else 538 syserr("!452 Error writing data file %s", 539 df); 540 } 541 } 542 } 543 else 544 { 545 int dfd; 546 MODE_T oldumask = 0; 547 register SM_FILE_T *dfp = NULL; 548 struct stat stbuf; 549 550 if (e->e_dfp != NULL && 551 sm_io_getinfo(e->e_dfp, SM_IO_WHAT_ISTYPE, BF_FILE_TYPE)) 552 syserr("committing over bf file"); 553 554 if (bitset(S_IWGRP, QueueFileMode)) 555 oldumask = umask(002); 556 dfd = open(df, O_WRONLY|O_CREAT|O_TRUNC|QF_O_EXTRA, 557 QueueFileMode); 558 if (bitset(S_IWGRP, QueueFileMode)) 559 (void) umask(oldumask); 560 if (dfd < 0 || (dfp = sm_io_open(SmFtStdiofd, SM_TIME_DEFAULT, 561 (void *) &dfd, SM_IO_WRONLY_B, 562 NULL)) == NULL) 563 syserr("!queueup: cannot create data temp file %s, uid=%d", 564 df, (int) geteuid()); 565 if (fstat(dfd, &stbuf) < 0) 566 e->e_dfino = -1; 567 else 568 { 569 e->e_dfdev = stbuf.st_dev; 570 e->e_dfino = ST_INODE(stbuf); 571 } 572 e->e_flags |= EF_HAS_DF; 573 memset(&mcibuf, '\0', sizeof(mcibuf)); 574 mcibuf.mci_out = dfp; 575 mcibuf.mci_mailer = FileMailer; 576 (*e->e_putbody)(&mcibuf, e, NULL); 577 578 if (SuperSafe == SAFE_REALLY || 579 SuperSafe == SAFE_REALLY_POSTMILTER || 580 (SuperSafe == SAFE_INTERACTIVE && msync)) 581 { 582 if (tTd(40,32)) 583 sm_syslog(LOG_INFO, e->e_id, 584 "queueup: fsync(dfp)"); 585 586 if (fsync(sm_io_getinfo(dfp, SM_IO_WHAT_FD, NULL)) < 0) 587 { 588 if (newid) 589 syserr("!552 Error writing data file %s", 590 df); 591 else 592 syserr("!452 Error writing data file %s", 593 df); 594 } 595 } 596 597 if (sm_io_close(dfp, SM_TIME_DEFAULT) < 0) 598 syserr("!queueup: cannot save data temp file %s, uid=%d", 599 df, (int) geteuid()); 600 e->e_putbody = putbody; 601 } 602 603 /* 604 ** Output future work requests. 605 ** Priority and creation time should be first, since 606 ** they are required by gatherq. 607 */ 608 609 /* output queue version number (must be first!) */ 610 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "V%d\n", QF_VERSION); 611 612 /* output creation time */ 613 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "T%ld\n", (long) e->e_ctime); 614 615 /* output last delivery time */ 616 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "K%ld\n", (long) e->e_dtime); 617 618 /* output number of delivery attempts */ 619 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "N%d\n", e->e_ntries); 620 621 /* output message priority */ 622 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "P%ld\n", e->e_msgpriority); 623 624 /* 625 ** If data file is in a different directory than the queue file, 626 ** output a "d" record naming the directory of the data file. 627 */ 628 629 if (e->e_dfqgrp != e->e_qgrp) 630 { 631 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "d%s\n", 632 Queue[e->e_dfqgrp]->qg_qpaths[e->e_dfqdir].qp_name); 633 } 634 635 /* output inode number of data file */ 636 /* XXX should probably include device major/minor too */ 637 if (e->e_dfino != -1) 638 { 639 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "I%ld/%ld/%llu\n", 640 (long) major(e->e_dfdev), 641 (long) minor(e->e_dfdev), 642 (ULONGLONG_T) e->e_dfino); 643 } 644 645 /* output body type */ 646 if (e->e_bodytype != NULL) 647 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "B%s\n", 648 denlstring(e->e_bodytype, true, false)); 649 650 /* quarantine reason */ 651 if (e->e_quarmsg != NULL) 652 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "q%s\n", 653 denlstring(e->e_quarmsg, true, false)); 654 655 /* message from envelope, if it exists */ 656 if (e->e_message != NULL) 657 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "M%s\n", 658 denlstring(e->e_message, true, false)); 659 660 /* send various flag bits through */ 661 p = buf; 662 if (bitset(EF_WARNING, e->e_flags)) 663 *p++ = 'w'; 664 if (bitset(EF_RESPONSE, e->e_flags)) 665 *p++ = 'r'; 666 if (bitset(EF_HAS8BIT, e->e_flags)) 667 *p++ = '8'; 668 if (bitset(EF_DELETE_BCC, e->e_flags)) 669 *p++ = 'b'; 670 if (bitset(EF_RET_PARAM, e->e_flags)) 671 *p++ = 'd'; 672 if (bitset(EF_NO_BODY_RETN, e->e_flags)) 673 *p++ = 'n'; 674 if (bitset(EF_SPLIT, e->e_flags)) 675 *p++ = 's'; 676 *p++ = '\0'; 677 if (buf[0] != '\0') 678 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "F%s\n", buf); 679 680 /* save $={persistentMacros} macro values */ 681 queueup_macros(macid("{persistentMacros}"), tfp, e); 682 683 /* output name of sender */ 684 if (bitnset(M_UDBENVELOPE, e->e_from.q_mailer->m_flags)) 685 p = e->e_sender; 686 else 687 p = e->e_from.q_paddr; 688 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "S%s\n", 689 denlstring(p, true, false)); 690 691 /* output ESMTP-supplied "original" information */ 692 if (e->e_envid != NULL) 693 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "Z%s\n", 694 denlstring(e->e_envid, true, false)); 695 696 /* output AUTH= parameter */ 697 if (e->e_auth_param != NULL) 698 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "A%s\n", 699 denlstring(e->e_auth_param, true, false)); 700 if (e->e_dlvr_flag != 0) 701 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "!%c %ld\n", 702 (char) e->e_dlvr_flag, e->e_deliver_by); 703 704 /* output list of recipient addresses */ 705 printctladdr(NULL, NULL); 706 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 707 { 708 if (!QS_IS_UNDELIVERED(q->q_state)) 709 continue; 710 711 /* message for this recipient, if it exists */ 712 if (q->q_message != NULL) 713 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "M%s\n", 714 denlstring(q->q_message, true, 715 false)); 716 717 printctladdr(q, tfp); 718 if (q->q_orcpt != NULL) 719 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "Q%s\n", 720 denlstring(q->q_orcpt, true, 721 false)); 722 if (q->q_finalrcpt != NULL) 723 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "r%s\n", 724 denlstring(q->q_finalrcpt, true, 725 false)); 726 (void) sm_io_putc(tfp, SM_TIME_DEFAULT, 'R'); 727 if (bitset(QPRIMARY, q->q_flags)) 728 (void) sm_io_putc(tfp, SM_TIME_DEFAULT, 'P'); 729 if (bitset(QHASNOTIFY, q->q_flags)) 730 (void) sm_io_putc(tfp, SM_TIME_DEFAULT, 'N'); 731 if (bitset(QPINGONSUCCESS, q->q_flags)) 732 (void) sm_io_putc(tfp, SM_TIME_DEFAULT, 'S'); 733 if (bitset(QPINGONFAILURE, q->q_flags)) 734 (void) sm_io_putc(tfp, SM_TIME_DEFAULT, 'F'); 735 if (bitset(QPINGONDELAY, q->q_flags)) 736 (void) sm_io_putc(tfp, SM_TIME_DEFAULT, 'D'); 737 if (q->q_alias != NULL && 738 bitset(QALIAS, q->q_alias->q_flags)) 739 (void) sm_io_putc(tfp, SM_TIME_DEFAULT, 'A'); 740 (void) sm_io_putc(tfp, SM_TIME_DEFAULT, ':'); 741 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "%s\n", 742 denlstring(q->q_paddr, true, false)); 743 if (announce) 744 { 745 char *tag = "queued"; 746 747 if (e->e_quarmsg != NULL) 748 tag = "quarantined"; 749 750 e->e_to = q->q_paddr; 751 message(tag); 752 if (LogLevel > 8) 753 logdelivery(q->q_mailer, NULL, q->q_status, 754 tag, NULL, (time_t) 0, e); 755 e->e_to = NULL; 756 } 757 if (tTd(40, 1)) 758 { 759 sm_dprintf("queueing "); 760 printaddr(sm_debug_file(), q, false); 761 } 762 } 763 764 /* 765 ** Output headers for this message. 766 ** Expand macros completely here. Queue run will deal with 767 ** everything as absolute headers. 768 ** All headers that must be relative to the recipient 769 ** can be cracked later. 770 ** We set up a "null mailer" -- i.e., a mailer that will have 771 ** no effect on the addresses as they are output. 772 */ 773 774 memset((char *) &nullmailer, '\0', sizeof(nullmailer)); 775 nullmailer.m_re_rwset = nullmailer.m_rh_rwset = 776 nullmailer.m_se_rwset = nullmailer.m_sh_rwset = -1; 777 nullmailer.m_eol = "\n"; 778 memset(&mcibuf, '\0', sizeof(mcibuf)); 779 mcibuf.mci_mailer = &nullmailer; 780 mcibuf.mci_out = tfp; 781 782 macdefine(&e->e_macro, A_PERM, 'g', "\201f"); 783 for (h = e->e_header; h != NULL; h = h->h_link) 784 { 785 if (h->h_value == NULL) 786 continue; 787 788 /* don't output resent headers on non-resent messages */ 789 if (bitset(H_RESENT, h->h_flags) && 790 !bitset(EF_RESENT, e->e_flags)) 791 continue; 792 793 /* expand macros; if null, don't output header at all */ 794 if (bitset(H_DEFAULT, h->h_flags)) 795 { 796 (void) expand(h->h_value, buf, sizeof(buf), e); 797 if (buf[0] == '\0') 798 continue; 799 if (buf[0] == ' ' && buf[1] == '\0') 800 continue; 801 } 802 803 /* output this header */ 804 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "H?"); 805 806 /* output conditional macro if present */ 807 if (h->h_macro != '\0') 808 { 809 if (bitset(0200, h->h_macro)) 810 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, 811 "${%s}", 812 macname(bitidx(h->h_macro))); 813 else 814 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, 815 "$%c", h->h_macro); 816 } 817 else if (!bitzerop(h->h_mflags) && 818 bitset(H_CHECK|H_ACHECK, h->h_flags)) 819 { 820 int j; 821 822 /* if conditional, output the set of conditions */ 823 for (j = '\0'; j <= '\177'; j++) 824 if (bitnset(j, h->h_mflags)) 825 (void) sm_io_putc(tfp, SM_TIME_DEFAULT, 826 j); 827 } 828 (void) sm_io_putc(tfp, SM_TIME_DEFAULT, '?'); 829 830 /* output the header: expand macros, convert addresses */ 831 if (bitset(H_DEFAULT, h->h_flags) && 832 !bitset(H_BINDLATE, h->h_flags)) 833 { 834 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "%s:%s\n", 835 h->h_field, 836 denlstring(buf, false, true)); 837 } 838 else if (bitset(H_FROM|H_RCPT, h->h_flags) && 839 !bitset(H_BINDLATE, h->h_flags)) 840 { 841 bool oldstyle = bitset(EF_OLDSTYLE, e->e_flags); 842 SM_FILE_T *savetrace = TrafficLogFile; 843 844 TrafficLogFile = NULL; 845 846 if (bitset(H_FROM, h->h_flags)) 847 oldstyle = false; 848 commaize(h, h->h_value, oldstyle, &mcibuf, e, 849 PXLF_HEADER); 850 851 TrafficLogFile = savetrace; 852 } 853 else 854 { 855 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "%s:%s\n", 856 h->h_field, 857 denlstring(h->h_value, false, 858 true)); 859 } 860 } 861 862 /* 863 ** Clean up. 864 ** 865 ** Write a terminator record -- this is to prevent 866 ** scurrilous crackers from appending any data. 867 */ 868 869 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, ".\n"); 870 871 if (sm_io_flush(tfp, SM_TIME_DEFAULT) != 0 || 872 ((SuperSafe == SAFE_REALLY || 873 SuperSafe == SAFE_REALLY_POSTMILTER || 874 (SuperSafe == SAFE_INTERACTIVE && msync)) && 875 fsync(sm_io_getinfo(tfp, SM_IO_WHAT_FD, NULL)) < 0) || 876 sm_io_error(tfp)) 877 { 878 if (newid) 879 syserr("!552 Error writing control file %s", tf); 880 else 881 syserr("!452 Error writing control file %s", tf); 882 } 883 884 if (!newid) 885 { 886 char new = queue_letter(e, ANYQFL_LETTER); 887 888 /* rename (locked) tf to be (locked) [qh]f */ 889 (void) sm_strlcpy(qf, queuename(e, ANYQFL_LETTER), 890 sizeof(qf)); 891 if (rename(tf, qf) < 0) 892 syserr("cannot rename(%s, %s), uid=%d", 893 tf, qf, (int) geteuid()); 894 else 895 { 896 /* 897 ** Check if type has changed and only 898 ** remove the old item if the rename above 899 ** succeeded. 900 */ 901 902 if (e->e_qfletter != '\0' && 903 e->e_qfletter != new) 904 { 905 if (tTd(40, 5)) 906 { 907 sm_dprintf("type changed from %c to %c\n", 908 e->e_qfletter, new); 909 } 910 911 if (unlink(queuename(e, e->e_qfletter)) < 0) 912 { 913 /* XXX: something more drastic? */ 914 if (LogLevel > 0) 915 sm_syslog(LOG_ERR, e->e_id, 916 "queueup: unlink(%s) failed: %s", 917 queuename(e, e->e_qfletter), 918 sm_errstring(errno)); 919 } 920 } 921 } 922 e->e_qfletter = new; 923 924 /* 925 ** fsync() after renaming to make sure metadata is 926 ** written to disk on filesystems in which renames are 927 ** not guaranteed. 928 */ 929 930 if (SuperSafe != SAFE_NO) 931 { 932 /* for softupdates */ 933 if (tfd >= 0 && fsync(tfd) < 0) 934 { 935 syserr("!queueup: cannot fsync queue temp file %s", 936 tf); 937 } 938 SYNC_DIR(qf, true); 939 } 940 941 /* close and unlock old (locked) queue file */ 942 if (e->e_lockfp != NULL) 943 (void) sm_io_close(e->e_lockfp, SM_TIME_DEFAULT); 944 e->e_lockfp = tfp; 945 946 /* save log info */ 947 if (LogLevel > 79) 948 sm_syslog(LOG_DEBUG, e->e_id, "queueup %s", qf); 949 } 950 else 951 { 952 /* save log info */ 953 if (LogLevel > 79) 954 sm_syslog(LOG_DEBUG, e->e_id, "queueup %s", tf); 955 956 e->e_qfletter = queue_letter(e, ANYQFL_LETTER); 957 } 958 959 errno = 0; 960 e->e_flags |= EF_INQUEUE; 961 962 if (tTd(40, 1)) 963 sm_dprintf("<<<<< done queueing %s <<<<<\n\n", e->e_id); 964 return; 965} 966 967/* 968** PRINTCTLADDR -- print control address to file. 969** 970** Parameters: 971** a -- address. 972** tfp -- file pointer. 973** 974** Returns: 975** none. 976** 977** Side Effects: 978** The control address (if changed) is printed to the file. 979** The last control address and uid are saved. 980*/ 981 982static void 983printctladdr(a, tfp) 984 register ADDRESS *a; 985 SM_FILE_T *tfp; 986{ 987 char *user; 988 register ADDRESS *q; 989 uid_t uid; 990 gid_t gid; 991 static ADDRESS *lastctladdr = NULL; 992 static uid_t lastuid; 993 994 /* initialization */ 995 if (a == NULL || a->q_alias == NULL || tfp == NULL) 996 { 997 if (lastctladdr != NULL && tfp != NULL) 998 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "C\n"); 999 lastctladdr = NULL; 1000 lastuid = 0; 1001 return; 1002 } 1003 1004 /* find the active uid */ 1005 q = getctladdr(a); 1006 if (q == NULL) 1007 { 1008 user = NULL; 1009 uid = 0; 1010 gid = 0; 1011 } 1012 else 1013 { 1014 user = q->q_ruser != NULL ? q->q_ruser : q->q_user; 1015 uid = q->q_uid; 1016 gid = q->q_gid; 1017 } 1018 a = a->q_alias; 1019 1020 /* check to see if this is the same as last time */ 1021 if (lastctladdr != NULL && uid == lastuid && 1022 strcmp(lastctladdr->q_paddr, a->q_paddr) == 0) 1023 return; 1024 lastuid = uid; 1025 lastctladdr = a; 1026 1027 if (uid == 0 || user == NULL || user[0] == '\0') 1028 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "C"); 1029 else 1030 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, "C%s:%ld:%ld", 1031 denlstring(user, true, false), (long) uid, 1032 (long) gid); 1033 (void) sm_io_fprintf(tfp, SM_TIME_DEFAULT, ":%s\n", 1034 denlstring(a->q_paddr, true, false)); 1035} 1036 1037/* 1038** RUNNERS_SIGTERM -- propagate a SIGTERM to queue runner process 1039** 1040** This propagates the signal to the child processes that are queue 1041** runners. This is for a queue runner "cleanup". After all of the 1042** child queue runner processes are signaled (it should be SIGTERM 1043** being the sig) then the old signal handler (Oldsh) is called 1044** to handle any cleanup set for this process (provided it is not 1045** SIG_DFL or SIG_IGN). The signal may not be handled immediately 1046** if the BlockOldsh flag is set. If the current process doesn't 1047** have a parent then handle the signal immediately, regardless of 1048** BlockOldsh. 1049** 1050** Parameters: 1051** sig -- the signal number being sent 1052** 1053** Returns: 1054** none. 1055** 1056** Side Effects: 1057** Sets the NoMoreRunners boolean to true to stop more runners 1058** from being started in runqueue(). 1059** 1060** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 1061** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 1062** DOING. 1063*/ 1064 1065static bool volatile NoMoreRunners = false; 1066static sigfunc_t Oldsh_term = SIG_DFL; 1067static sigfunc_t Oldsh_hup = SIG_DFL; 1068static sigfunc_t volatile Oldsh = SIG_DFL; 1069static bool BlockOldsh = false; 1070static int volatile Oldsig = 0; 1071static SIGFUNC_DECL runners_sigterm __P((int)); 1072static SIGFUNC_DECL runners_sighup __P((int)); 1073 1074static SIGFUNC_DECL 1075runners_sigterm(sig) 1076 int sig; 1077{ 1078 int save_errno = errno; 1079 1080 FIX_SYSV_SIGNAL(sig, runners_sigterm); 1081 errno = save_errno; 1082 CHECK_CRITICAL(sig); 1083 NoMoreRunners = true; 1084 Oldsh = Oldsh_term; 1085 Oldsig = sig; 1086 proc_list_signal(PROC_QUEUE, sig); 1087 1088 if (!BlockOldsh || getppid() <= 1) 1089 { 1090 /* Check that a valid 'old signal handler' is callable */ 1091 if (Oldsh_term != SIG_DFL && Oldsh_term != SIG_IGN && 1092 Oldsh_term != runners_sigterm) 1093 (*Oldsh_term)(sig); 1094 } 1095 errno = save_errno; 1096 return SIGFUNC_RETURN; 1097} 1098/* 1099** RUNNERS_SIGHUP -- propagate a SIGHUP to queue runner process 1100** 1101** This propagates the signal to the child processes that are queue 1102** runners. This is for a queue runner "cleanup". After all of the 1103** child queue runner processes are signaled (it should be SIGHUP 1104** being the sig) then the old signal handler (Oldsh) is called to 1105** handle any cleanup set for this process (provided it is not SIG_DFL 1106** or SIG_IGN). The signal may not be handled immediately if the 1107** BlockOldsh flag is set. If the current process doesn't have 1108** a parent then handle the signal immediately, regardless of 1109** BlockOldsh. 1110** 1111** Parameters: 1112** sig -- the signal number being sent 1113** 1114** Returns: 1115** none. 1116** 1117** Side Effects: 1118** Sets the NoMoreRunners boolean to true to stop more runners 1119** from being started in runqueue(). 1120** 1121** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 1122** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 1123** DOING. 1124*/ 1125 1126static SIGFUNC_DECL 1127runners_sighup(sig) 1128 int sig; 1129{ 1130 int save_errno = errno; 1131 1132 FIX_SYSV_SIGNAL(sig, runners_sighup); 1133 errno = save_errno; 1134 CHECK_CRITICAL(sig); 1135 NoMoreRunners = true; 1136 Oldsh = Oldsh_hup; 1137 Oldsig = sig; 1138 proc_list_signal(PROC_QUEUE, sig); 1139 1140 if (!BlockOldsh || getppid() <= 1) 1141 { 1142 /* Check that a valid 'old signal handler' is callable */ 1143 if (Oldsh_hup != SIG_DFL && Oldsh_hup != SIG_IGN && 1144 Oldsh_hup != runners_sighup) 1145 (*Oldsh_hup)(sig); 1146 } 1147 errno = save_errno; 1148 return SIGFUNC_RETURN; 1149} 1150/* 1151** MARK_WORK_GROUP_RESTART -- mark a work group as needing a restart 1152** 1153** Sets a workgroup for restarting. 1154** 1155** Parameters: 1156** wgrp -- the work group id to restart. 1157** reason -- why (signal?), -1 to turn off restart 1158** 1159** Returns: 1160** none. 1161** 1162** Side effects: 1163** May set global RestartWorkGroup to true. 1164** 1165** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 1166** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 1167** DOING. 1168*/ 1169 1170void 1171mark_work_group_restart(wgrp, reason) 1172 int wgrp; 1173 int reason; 1174{ 1175 if (wgrp < 0 || wgrp > NumWorkGroups) 1176 return; 1177 1178 WorkGrp[wgrp].wg_restart = reason; 1179 if (reason >= 0) 1180 RestartWorkGroup = true; 1181} 1182/* 1183** RESTART_MARKED_WORK_GROUPS -- restart work groups marked as needing restart 1184** 1185** Restart any workgroup marked as needing a restart provided more 1186** runners are allowed. 1187** 1188** Parameters: 1189** none. 1190** 1191** Returns: 1192** none. 1193** 1194** Side effects: 1195** Sets global RestartWorkGroup to false. 1196*/ 1197 1198void 1199restart_marked_work_groups() 1200{ 1201 int i; 1202 int wasblocked; 1203 1204 if (NoMoreRunners) 1205 return; 1206 1207 /* Block SIGCHLD so reapchild() doesn't mess with us */ 1208 wasblocked = sm_blocksignal(SIGCHLD); 1209 1210 for (i = 0; i < NumWorkGroups; i++) 1211 { 1212 if (WorkGrp[i].wg_restart >= 0) 1213 { 1214 if (LogLevel > 8) 1215 sm_syslog(LOG_ERR, NOQID, 1216 "restart queue runner=%d due to signal 0x%x", 1217 i, WorkGrp[i].wg_restart); 1218 restart_work_group(i); 1219 } 1220 } 1221 RestartWorkGroup = false; 1222 1223 if (wasblocked == 0) 1224 (void) sm_releasesignal(SIGCHLD); 1225} 1226/* 1227** RESTART_WORK_GROUP -- restart a specific work group 1228** 1229** Restart a specific workgroup provided more runners are allowed. 1230** If the requested work group has been restarted too many times log 1231** this and refuse to restart. 1232** 1233** Parameters: 1234** wgrp -- the work group id to restart 1235** 1236** Returns: 1237** none. 1238** 1239** Side Effects: 1240** starts another process doing the work of wgrp 1241*/ 1242 1243#define MAX_PERSIST_RESTART 10 /* max allowed number of restarts */ 1244 1245static void 1246restart_work_group(wgrp) 1247 int wgrp; 1248{ 1249 if (NoMoreRunners || 1250 wgrp < 0 || wgrp > NumWorkGroups) 1251 return; 1252 1253 WorkGrp[wgrp].wg_restart = -1; 1254 if (WorkGrp[wgrp].wg_restartcnt < MAX_PERSIST_RESTART) 1255 { 1256 /* avoid overflow; increment here */ 1257 WorkGrp[wgrp].wg_restartcnt++; 1258 (void) run_work_group(wgrp, RWG_FORK|RWG_PERSISTENT|RWG_RUNALL); 1259 } 1260 else 1261 { 1262 sm_syslog(LOG_ERR, NOQID, 1263 "ERROR: persistent queue runner=%d restarted too many times, queue runner lost", 1264 wgrp); 1265 } 1266} 1267/* 1268** SCHEDULE_QUEUE_RUNS -- schedule the next queue run for a work group. 1269** 1270** Parameters: 1271** runall -- schedule even if individual bit is not set. 1272** wgrp -- the work group id to schedule. 1273** didit -- the queue run was performed for this work group. 1274** 1275** Returns: 1276** nothing 1277*/ 1278 1279#define INCR_MOD(v, m) if (++v >= m) \ 1280 v = 0; \ 1281 else 1282 1283static void 1284schedule_queue_runs(runall, wgrp, didit) 1285 bool runall; 1286 int wgrp; 1287 bool didit; 1288{ 1289 int qgrp, cgrp, endgrp; 1290#if _FFR_QUEUE_SCHED_DBG 1291 time_t lastsched; 1292 bool sched; 1293#endif /* _FFR_QUEUE_SCHED_DBG */ 1294 time_t now; 1295 time_t minqintvl; 1296 1297 /* 1298 ** This is a bit ugly since we have to duplicate the 1299 ** code that "walks" through a work queue group. 1300 */ 1301 1302 now = curtime(); 1303 minqintvl = 0; 1304 cgrp = endgrp = WorkGrp[wgrp].wg_curqgrp; 1305 do 1306 { 1307 time_t qintvl; 1308 1309#if _FFR_QUEUE_SCHED_DBG 1310 lastsched = 0; 1311 sched = false; 1312#endif /* _FFR_QUEUE_SCHED_DBG */ 1313 qgrp = WorkGrp[wgrp].wg_qgs[cgrp]->qg_index; 1314 if (Queue[qgrp]->qg_queueintvl > 0) 1315 qintvl = Queue[qgrp]->qg_queueintvl; 1316 else if (QueueIntvl > 0) 1317 qintvl = QueueIntvl; 1318 else 1319 qintvl = (time_t) 0; 1320#if _FFR_QUEUE_SCHED_DBG 1321 lastsched = Queue[qgrp]->qg_nextrun; 1322#endif /* _FFR_QUEUE_SCHED_DBG */ 1323 if ((runall || Queue[qgrp]->qg_nextrun <= now) && qintvl > 0) 1324 { 1325#if _FFR_QUEUE_SCHED_DBG 1326 sched = true; 1327#endif /* _FFR_QUEUE_SCHED_DBG */ 1328 if (minqintvl == 0 || qintvl < minqintvl) 1329 minqintvl = qintvl; 1330 1331 /* 1332 ** Only set a new time if a queue run was performed 1333 ** for this queue group. If the queue was not run, 1334 ** we could starve it by setting a new time on each 1335 ** call. 1336 */ 1337 1338 if (didit) 1339 Queue[qgrp]->qg_nextrun += qintvl; 1340 } 1341#if _FFR_QUEUE_SCHED_DBG 1342 if (tTd(69, 10)) 1343 sm_syslog(LOG_INFO, NOQID, 1344 "sqr: wgrp=%d, cgrp=%d, qgrp=%d, intvl=%ld, QI=%ld, runall=%d, lastrun=%ld, nextrun=%ld, sched=%d", 1345 wgrp, cgrp, qgrp, Queue[qgrp]->qg_queueintvl, 1346 QueueIntvl, runall, lastsched, 1347 Queue[qgrp]->qg_nextrun, sched); 1348#endif /* _FFR_QUEUE_SCHED_DBG */ 1349 INCR_MOD(cgrp, WorkGrp[wgrp].wg_numqgrp); 1350 } while (endgrp != cgrp); 1351 if (minqintvl > 0) 1352 (void) sm_setevent(minqintvl, runqueueevent, 0); 1353} 1354 1355#if _FFR_QUEUE_RUN_PARANOIA 1356/* 1357** CHECKQUEUERUNNER -- check whether a queue group hasn't been run. 1358** 1359** Use this if events may get lost and hence queue runners may not 1360** be started and mail will pile up in a queue. 1361** 1362** Parameters: 1363** none. 1364** 1365** Returns: 1366** true if a queue run is necessary. 1367** 1368** Side Effects: 1369** may schedule a queue run. 1370*/ 1371 1372bool 1373checkqueuerunner() 1374{ 1375 int qgrp; 1376 time_t now, minqintvl; 1377 1378 now = curtime(); 1379 minqintvl = 0; 1380 for (qgrp = 0; qgrp < NumQueue && Queue[qgrp] != NULL; qgrp++) 1381 { 1382 time_t qintvl; 1383 1384 if (Queue[qgrp]->qg_queueintvl > 0) 1385 qintvl = Queue[qgrp]->qg_queueintvl; 1386 else if (QueueIntvl > 0) 1387 qintvl = QueueIntvl; 1388 else 1389 qintvl = (time_t) 0; 1390 if (Queue[qgrp]->qg_nextrun <= now - qintvl) 1391 { 1392 if (minqintvl == 0 || qintvl < minqintvl) 1393 minqintvl = qintvl; 1394 if (LogLevel > 1) 1395 sm_syslog(LOG_WARNING, NOQID, 1396 "checkqueuerunner: queue %d should have been run at %s, queue interval %ld", 1397 qgrp, 1398 arpadate(ctime(&Queue[qgrp]->qg_nextrun)), 1399 qintvl); 1400 } 1401 } 1402 if (minqintvl > 0) 1403 { 1404 (void) sm_setevent(minqintvl, runqueueevent, 0); 1405 return true; 1406 } 1407 return false; 1408} 1409#endif /* _FFR_QUEUE_RUN_PARANOIA */ 1410 1411/* 1412** RUNQUEUE -- run the jobs in the queue. 1413** 1414** Gets the stuff out of the queue in some presumably logical 1415** order and processes them. 1416** 1417** Parameters: 1418** forkflag -- true if the queue scanning should be done in 1419** a child process. We double-fork so it is not our 1420** child and we don't have to clean up after it. 1421** false can be ignored if we have multiple queues. 1422** verbose -- if true, print out status information. 1423** persistent -- persistent queue runner? 1424** runall -- run all groups or only a subset (DoQueueRun)? 1425** 1426** Returns: 1427** true if the queue run successfully began. 1428** 1429** Side Effects: 1430** runs things in the mail queue using run_work_group(). 1431** maybe schedules next queue run. 1432*/ 1433 1434static ENVELOPE QueueEnvelope; /* the queue run envelope */ 1435static time_t LastQueueTime = 0; /* last time a queue ID assigned */ 1436static pid_t LastQueuePid = -1; /* last PID which had a queue ID */ 1437 1438/* values for qp_supdirs */ 1439#define QP_NOSUB 0x0000 /* No subdirectories */ 1440#define QP_SUBDF 0x0001 /* "df" subdirectory */ 1441#define QP_SUBQF 0x0002 /* "qf" subdirectory */ 1442#define QP_SUBXF 0x0004 /* "xf" subdirectory */ 1443 1444bool 1445runqueue(forkflag, verbose, persistent, runall) 1446 bool forkflag; 1447 bool verbose; 1448 bool persistent; 1449 bool runall; 1450{ 1451 int i; 1452 bool ret = true; 1453 static int curnum = 0; 1454 sigfunc_t cursh; 1455#if SM_HEAP_CHECK 1456 SM_NONVOLATILE int oldgroup = 0; 1457 1458 if (sm_debug_active(&DebugLeakQ, 1)) 1459 { 1460 oldgroup = sm_heap_group(); 1461 sm_heap_newgroup(); 1462 sm_dprintf("runqueue() heap group #%d\n", sm_heap_group()); 1463 } 1464#endif /* SM_HEAP_CHECK */ 1465 1466 /* queue run has been started, don't do any more this time */ 1467 DoQueueRun = false; 1468 1469 /* more than one queue or more than one directory per queue */ 1470 if (!forkflag && !verbose && 1471 (WorkGrp[0].wg_qgs[0]->qg_numqueues > 1 || NumWorkGroups > 1 || 1472 WorkGrp[0].wg_numqgrp > 1)) 1473 forkflag = true; 1474 1475 /* 1476 ** For controlling queue runners via signals sent to this process. 1477 ** Oldsh* will get called too by runners_sig* (if it is not SIG_IGN 1478 ** or SIG_DFL) to preserve cleanup behavior. Now that this process 1479 ** will have children (and perhaps grandchildren) this handler will 1480 ** be left in place. This is because this process, once it has 1481 ** finished spinning off queue runners, may go back to doing something 1482 ** else (like being a daemon). And we still want on a SIG{TERM,HUP} to 1483 ** clean up the child queue runners. Only install 'runners_sig*' once 1484 ** else we'll get stuck looping forever. 1485 */ 1486 1487 cursh = sm_signal(SIGTERM, runners_sigterm); 1488 if (cursh != runners_sigterm) 1489 Oldsh_term = cursh; 1490 cursh = sm_signal(SIGHUP, runners_sighup); 1491 if (cursh != runners_sighup) 1492 Oldsh_hup = cursh; 1493 1494 for (i = 0; i < NumWorkGroups && !NoMoreRunners; i++) 1495 { 1496 int rwgflags = RWG_NONE; 1497 1498 /* 1499 ** If MaxQueueChildren active then test whether the start 1500 ** of the next queue group's additional queue runners (maximum) 1501 ** will result in MaxQueueChildren being exceeded. 1502 ** 1503 ** Note: do not use continue; even though another workgroup 1504 ** may have fewer queue runners, this would be "unfair", 1505 ** i.e., this work group might "starve" then. 1506 */ 1507 1508#if _FFR_QUEUE_SCHED_DBG 1509 if (tTd(69, 10)) 1510 sm_syslog(LOG_INFO, NOQID, 1511 "rq: curnum=%d, MaxQueueChildren=%d, CurRunners=%d, WorkGrp[curnum].wg_maxact=%d", 1512 curnum, MaxQueueChildren, CurRunners, 1513 WorkGrp[curnum].wg_maxact); 1514#endif /* _FFR_QUEUE_SCHED_DBG */ 1515 if (MaxQueueChildren > 0 && 1516 CurRunners + WorkGrp[curnum].wg_maxact > MaxQueueChildren) 1517 break; 1518 1519 /* 1520 ** Pick up where we left off (curnum), in case we 1521 ** used up all the children last time without finishing. 1522 ** This give a round-robin fairness to queue runs. 1523 ** 1524 ** Increment CurRunners before calling run_work_group() 1525 ** to avoid a "race condition" with proc_list_drop() which 1526 ** decrements CurRunners if the queue runners terminate. 1527 ** Notice: CurRunners is an upper limit, in some cases 1528 ** (too few jobs in the queue) this value is larger than 1529 ** the actual number of queue runners. The discrepancy can 1530 ** increase if some queue runners "hang" for a long time. 1531 */ 1532 1533 CurRunners += WorkGrp[curnum].wg_maxact; 1534 if (forkflag) 1535 rwgflags |= RWG_FORK; 1536 if (verbose) 1537 rwgflags |= RWG_VERBOSE; 1538 if (persistent) 1539 rwgflags |= RWG_PERSISTENT; 1540 if (runall) 1541 rwgflags |= RWG_RUNALL; 1542 ret = run_work_group(curnum, rwgflags); 1543 1544 /* 1545 ** Failure means a message was printed for ETRN 1546 ** and subsequent queues are likely to fail as well. 1547 ** Decrement CurRunners in that case because 1548 ** none have been started. 1549 */ 1550 1551 if (!ret) 1552 { 1553 CurRunners -= WorkGrp[curnum].wg_maxact; 1554 break; 1555 } 1556 1557 if (!persistent) 1558 schedule_queue_runs(runall, curnum, true); 1559 INCR_MOD(curnum, NumWorkGroups); 1560 } 1561 1562 /* schedule left over queue runs */ 1563 if (i < NumWorkGroups && !NoMoreRunners && !persistent) 1564 { 1565 int h; 1566 1567 for (h = curnum; i < NumWorkGroups; i++) 1568 { 1569 schedule_queue_runs(runall, h, false); 1570 INCR_MOD(h, NumWorkGroups); 1571 } 1572 } 1573 1574 1575#if SM_HEAP_CHECK 1576 if (sm_debug_active(&DebugLeakQ, 1)) 1577 sm_heap_setgroup(oldgroup); 1578#endif /* SM_HEAP_CHECK */ 1579 return ret; 1580} 1581 1582#if _FFR_SKIP_DOMAINS 1583/* 1584** SKIP_DOMAINS -- Skip 'skip' number of domains in the WorkQ. 1585** 1586** Added by Stephen Frost <sfrost@snowman.net> to support 1587** having each runner process every N'th domain instead of 1588** every N'th message. 1589** 1590** Parameters: 1591** skip -- number of domains in WorkQ to skip. 1592** 1593** Returns: 1594** total number of messages skipped. 1595** 1596** Side Effects: 1597** may change WorkQ 1598*/ 1599 1600static int 1601skip_domains(skip) 1602 int skip; 1603{ 1604 int n, seqjump; 1605 1606 for (n = 0, seqjump = 0; n < skip && WorkQ != NULL; seqjump++) 1607 { 1608 if (WorkQ->w_next != NULL) 1609 { 1610 if (WorkQ->w_host != NULL && 1611 WorkQ->w_next->w_host != NULL) 1612 { 1613 if (sm_strcasecmp(WorkQ->w_host, 1614 WorkQ->w_next->w_host) != 0) 1615 n++; 1616 } 1617 else 1618 { 1619 if ((WorkQ->w_host != NULL && 1620 WorkQ->w_next->w_host == NULL) || 1621 (WorkQ->w_host == NULL && 1622 WorkQ->w_next->w_host != NULL)) 1623 n++; 1624 } 1625 } 1626 WorkQ = WorkQ->w_next; 1627 } 1628 return seqjump; 1629} 1630#endif /* _FFR_SKIP_DOMAINS */ 1631 1632/* 1633** RUNNER_WORK -- have a queue runner do its work 1634** 1635** Have a queue runner do its work a list of entries. 1636** When work isn't directly being done then this process can take a signal 1637** and terminate immediately (in a clean fashion of course). 1638** When work is directly being done, it's not to be interrupted 1639** immediately: the work should be allowed to finish at a clean point 1640** before termination (in a clean fashion of course). 1641** 1642** Parameters: 1643** e -- envelope. 1644** sequenceno -- 'th process to run WorkQ. 1645** didfork -- did the calling process fork()? 1646** skip -- process only each skip'th item. 1647** njobs -- number of jobs in WorkQ. 1648** 1649** Returns: 1650** none. 1651** 1652** Side Effects: 1653** runs things in the mail queue. 1654*/ 1655 1656static void 1657runner_work(e, sequenceno, didfork, skip, njobs) 1658 register ENVELOPE *e; 1659 int sequenceno; 1660 bool didfork; 1661 int skip; 1662 int njobs; 1663{ 1664 int n, seqjump; 1665 WORK *w; 1666 time_t now; 1667 1668 SM_GET_LA(now); 1669 1670 /* 1671 ** Here we temporarily block the second calling of the handlers. 1672 ** This allows us to handle the signal without terminating in the 1673 ** middle of direct work. If a signal does come, the test for 1674 ** NoMoreRunners will find it. 1675 */ 1676 1677 BlockOldsh = true; 1678 seqjump = skip; 1679 1680 /* process them once at a time */ 1681 while (WorkQ != NULL) 1682 { 1683#if SM_HEAP_CHECK 1684 SM_NONVOLATILE int oldgroup = 0; 1685 1686 if (sm_debug_active(&DebugLeakQ, 1)) 1687 { 1688 oldgroup = sm_heap_group(); 1689 sm_heap_newgroup(); 1690 sm_dprintf("run_queue_group() heap group #%d\n", 1691 sm_heap_group()); 1692 } 1693#endif /* SM_HEAP_CHECK */ 1694 1695 /* do no more work */ 1696 if (NoMoreRunners) 1697 { 1698 /* Check that a valid signal handler is callable */ 1699 if (Oldsh != SIG_DFL && Oldsh != SIG_IGN && 1700 Oldsh != runners_sighup && 1701 Oldsh != runners_sigterm) 1702 (*Oldsh)(Oldsig); 1703 break; 1704 } 1705 1706 w = WorkQ; /* assign current work item */ 1707 1708 /* 1709 ** Set the head of the WorkQ to the next work item. 1710 ** It is set 'skip' ahead (the number of parallel queue 1711 ** runners working on WorkQ together) since each runner 1712 ** works on every 'skip'th (N-th) item. 1713#if _FFR_SKIP_DOMAINS 1714 ** In the case of the BYHOST Queue Sort Order, the 'item' 1715 ** is a domain, so we work on every 'skip'th (N-th) domain. 1716#endif * _FFR_SKIP_DOMAINS * 1717 */ 1718 1719#if _FFR_SKIP_DOMAINS 1720 if (QueueSortOrder == QSO_BYHOST) 1721 { 1722 seqjump = 1; 1723 if (WorkQ->w_next != NULL) 1724 { 1725 if (WorkQ->w_host != NULL && 1726 WorkQ->w_next->w_host != NULL) 1727 { 1728 if (sm_strcasecmp(WorkQ->w_host, 1729 WorkQ->w_next->w_host) 1730 != 0) 1731 seqjump = skip_domains(skip); 1732 else 1733 WorkQ = WorkQ->w_next; 1734 } 1735 else 1736 { 1737 if ((WorkQ->w_host != NULL && 1738 WorkQ->w_next->w_host == NULL) || 1739 (WorkQ->w_host == NULL && 1740 WorkQ->w_next->w_host != NULL)) 1741 seqjump = skip_domains(skip); 1742 else 1743 WorkQ = WorkQ->w_next; 1744 } 1745 } 1746 else 1747 WorkQ = WorkQ->w_next; 1748 } 1749 else 1750#endif /* _FFR_SKIP_DOMAINS */ 1751 { 1752 for (n = 0; n < skip && WorkQ != NULL; n++) 1753 WorkQ = WorkQ->w_next; 1754 } 1755 1756 e->e_to = NULL; 1757 1758 /* 1759 ** Ignore jobs that are too expensive for the moment. 1760 ** 1761 ** Get new load average every GET_NEW_LA_TIME seconds. 1762 */ 1763 1764 SM_GET_LA(now); 1765 if (shouldqueue(WkRecipFact, Current_LA_time)) 1766 { 1767 char *msg = "Aborting queue run: load average too high"; 1768 1769 if (Verbose) 1770 message("%s", msg); 1771 if (LogLevel > 8) 1772 sm_syslog(LOG_INFO, NOQID, "runqueue: %s", msg); 1773 break; 1774 } 1775 if (shouldqueue(w->w_pri, w->w_ctime)) 1776 { 1777 if (Verbose) 1778 message(EmptyString); 1779 if (QueueSortOrder == QSO_BYPRIORITY) 1780 { 1781 if (Verbose) 1782 message("Skipping %s/%s (sequence %d of %d) and flushing rest of queue", 1783 qid_printqueue(w->w_qgrp, 1784 w->w_qdir), 1785 w->w_name + 2, sequenceno, 1786 njobs); 1787 if (LogLevel > 8) 1788 sm_syslog(LOG_INFO, NOQID, 1789 "runqueue: Flushing queue from %s/%s (pri %ld, LA %d, %d of %d)", 1790 qid_printqueue(w->w_qgrp, 1791 w->w_qdir), 1792 w->w_name + 2, w->w_pri, 1793 CurrentLA, sequenceno, 1794 njobs); 1795 break; 1796 } 1797 else if (Verbose) 1798 message("Skipping %s/%s (sequence %d of %d)", 1799 qid_printqueue(w->w_qgrp, w->w_qdir), 1800 w->w_name + 2, sequenceno, njobs); 1801 } 1802 else 1803 { 1804 if (Verbose) 1805 { 1806 message(EmptyString); 1807 message("Running %s/%s (sequence %d of %d)", 1808 qid_printqueue(w->w_qgrp, w->w_qdir), 1809 w->w_name + 2, sequenceno, njobs); 1810 } 1811 if (didfork && MaxQueueChildren > 0) 1812 { 1813 sm_blocksignal(SIGCHLD); 1814 (void) sm_signal(SIGCHLD, reapchild); 1815 } 1816 if (tTd(63, 100)) 1817 sm_syslog(LOG_DEBUG, NOQID, 1818 "runqueue %s dowork(%s)", 1819 qid_printqueue(w->w_qgrp, w->w_qdir), 1820 w->w_name + 2); 1821 1822 (void) dowork(w->w_qgrp, w->w_qdir, w->w_name + 2, 1823 ForkQueueRuns, false, e); 1824 errno = 0; 1825 } 1826 sm_free(w->w_name); /* XXX */ 1827 if (w->w_host != NULL) 1828 sm_free(w->w_host); /* XXX */ 1829 sm_free((char *) w); /* XXX */ 1830 sequenceno += seqjump; /* next sequence number */ 1831#if SM_HEAP_CHECK 1832 if (sm_debug_active(&DebugLeakQ, 1)) 1833 sm_heap_setgroup(oldgroup); 1834#endif /* SM_HEAP_CHECK */ 1835 } 1836 1837 BlockOldsh = false; 1838 1839 /* check the signals didn't happen during the revert */ 1840 if (NoMoreRunners) 1841 { 1842 /* Check that a valid signal handler is callable */ 1843 if (Oldsh != SIG_DFL && Oldsh != SIG_IGN && 1844 Oldsh != runners_sighup && Oldsh != runners_sigterm) 1845 (*Oldsh)(Oldsig); 1846 } 1847 1848 Oldsh = SIG_DFL; /* after the NoMoreRunners check */ 1849} 1850/* 1851** RUN_WORK_GROUP -- run the jobs in a queue group from a work group. 1852** 1853** Gets the stuff out of the queue in some presumably logical 1854** order and processes them. 1855** 1856** Parameters: 1857** wgrp -- work group to process. 1858** flags -- RWG_* flags 1859** 1860** Returns: 1861** true if the queue run successfully began. 1862** 1863** Side Effects: 1864** runs things in the mail queue. 1865*/ 1866 1867/* Minimum sleep time for persistent queue runners */ 1868#define MIN_SLEEP_TIME 5 1869 1870bool 1871run_work_group(wgrp, flags) 1872 int wgrp; 1873 int flags; 1874{ 1875 register ENVELOPE *e; 1876 int njobs, qdir; 1877 int sequenceno = 1; 1878 int qgrp, endgrp, h, i; 1879 time_t now; 1880 bool full, more; 1881 SM_RPOOL_T *rpool; 1882 extern ENVELOPE BlankEnvelope; 1883 extern SIGFUNC_DECL reapchild __P((int)); 1884 1885 if (wgrp < 0) 1886 return false; 1887 1888 /* 1889 ** If no work will ever be selected, don't even bother reading 1890 ** the queue. 1891 */ 1892 1893 SM_GET_LA(now); 1894 1895 if (!bitset(RWG_PERSISTENT, flags) && 1896 shouldqueue(WkRecipFact, Current_LA_time)) 1897 { 1898 char *msg = "Skipping queue run -- load average too high"; 1899 1900 if (bitset(RWG_VERBOSE, flags)) 1901 message("458 %s\n", msg); 1902 if (LogLevel > 8) 1903 sm_syslog(LOG_INFO, NOQID, "runqueue: %s", msg); 1904 return false; 1905 } 1906 1907 /* 1908 ** See if we already have too many children. 1909 */ 1910 1911 if (bitset(RWG_FORK, flags) && 1912 WorkGrp[wgrp].wg_lowqintvl > 0 && 1913 !bitset(RWG_PERSISTENT, flags) && 1914 MaxChildren > 0 && CurChildren >= MaxChildren) 1915 { 1916 char *msg = "Skipping queue run -- too many children"; 1917 1918 if (bitset(RWG_VERBOSE, flags)) 1919 message("458 %s (%d)\n", msg, CurChildren); 1920 if (LogLevel > 8) 1921 sm_syslog(LOG_INFO, NOQID, "runqueue: %s (%d)", 1922 msg, CurChildren); 1923 return false; 1924 } 1925 1926 /* 1927 ** See if we want to go off and do other useful work. 1928 */ 1929 1930 if (bitset(RWG_FORK, flags)) 1931 { 1932 pid_t pid; 1933 1934 (void) sm_blocksignal(SIGCHLD); 1935 (void) sm_signal(SIGCHLD, reapchild); 1936 1937 pid = dofork(); 1938 if (pid == -1) 1939 { 1940 const char *msg = "Skipping queue run -- fork() failed"; 1941 const char *err = sm_errstring(errno); 1942 1943 if (bitset(RWG_VERBOSE, flags)) 1944 message("458 %s: %s\n", msg, err); 1945 if (LogLevel > 8) 1946 sm_syslog(LOG_INFO, NOQID, "runqueue: %s: %s", 1947 msg, err); 1948 (void) sm_releasesignal(SIGCHLD); 1949 return false; 1950 } 1951 if (pid != 0) 1952 { 1953 /* parent -- pick up intermediate zombie */ 1954 (void) sm_blocksignal(SIGALRM); 1955 1956 /* wgrp only used when queue runners are persistent */ 1957 proc_list_add(pid, "Queue runner", PROC_QUEUE, 1958 WorkGrp[wgrp].wg_maxact, 1959 bitset(RWG_PERSISTENT, flags) ? wgrp : -1, 1960 NULL); 1961 (void) sm_releasesignal(SIGALRM); 1962 (void) sm_releasesignal(SIGCHLD); 1963 return true; 1964 } 1965 1966 /* child -- clean up signals */ 1967 1968 /* Reset global flags */ 1969 RestartRequest = NULL; 1970 RestartWorkGroup = false; 1971 ShutdownRequest = NULL; 1972 PendingSignal = 0; 1973 CurrentPid = getpid(); 1974 close_sendmail_pid(); 1975 1976 /* 1977 ** Initialize exception stack and default exception 1978 ** handler for child process. 1979 */ 1980 1981 sm_exc_newthread(fatal_error); 1982 clrcontrol(); 1983 proc_list_clear(); 1984 1985 /* Add parent process as first child item */ 1986 proc_list_add(CurrentPid, "Queue runner child process", 1987 PROC_QUEUE_CHILD, 0, -1, NULL); 1988 (void) sm_releasesignal(SIGCHLD); 1989 (void) sm_signal(SIGCHLD, SIG_DFL); 1990 (void) sm_signal(SIGHUP, SIG_DFL); 1991 (void) sm_signal(SIGTERM, intsig); 1992 } 1993 1994 /* 1995 ** Release any resources used by the daemon code. 1996 */ 1997 1998 clrdaemon(); 1999 2000 /* force it to run expensive jobs */ 2001 NoConnect = false; 2002 2003 /* drop privileges */ 2004 if (geteuid() == (uid_t) 0) 2005 (void) drop_privileges(false); 2006 2007 /* 2008 ** Create ourselves an envelope 2009 */ 2010 2011 CurEnv = &QueueEnvelope; 2012 rpool = sm_rpool_new_x(NULL); 2013 e = newenvelope(&QueueEnvelope, CurEnv, rpool); 2014 e->e_flags = BlankEnvelope.e_flags; 2015 e->e_parent = NULL; 2016 2017 /* make sure we have disconnected from parent */ 2018 if (bitset(RWG_FORK, flags)) 2019 { 2020 disconnect(1, e); 2021 QuickAbort = false; 2022 } 2023 2024 /* 2025 ** If we are running part of the queue, always ignore stored 2026 ** host status. 2027 */ 2028 2029 if (QueueLimitId != NULL || QueueLimitSender != NULL || 2030 QueueLimitQuarantine != NULL || 2031 QueueLimitRecipient != NULL) 2032 { 2033 IgnoreHostStatus = true; 2034 MinQueueAge = 0; 2035 } 2036 2037 /* 2038 ** Here is where we choose the queue group from the work group. 2039 ** The caller of the "domorework" label must setup a new envelope. 2040 */ 2041 2042 endgrp = WorkGrp[wgrp].wg_curqgrp; /* to not spin endlessly */ 2043 2044 domorework: 2045 2046 /* 2047 ** Run a queue group if: 2048 ** RWG_RUNALL bit is set or the bit for this group is set. 2049 */ 2050 2051 now = curtime(); 2052 for (;;) 2053 { 2054 /* 2055 ** Find the next queue group within the work group that 2056 ** has been marked as needing a run. 2057 */ 2058 2059 qgrp = WorkGrp[wgrp].wg_qgs[WorkGrp[wgrp].wg_curqgrp]->qg_index; 2060 WorkGrp[wgrp].wg_curqgrp++; /* advance */ 2061 WorkGrp[wgrp].wg_curqgrp %= WorkGrp[wgrp].wg_numqgrp; /* wrap */ 2062 if (bitset(RWG_RUNALL, flags) || 2063 (Queue[qgrp]->qg_nextrun <= now && 2064 Queue[qgrp]->qg_nextrun != (time_t) -1)) 2065 break; 2066 if (endgrp == WorkGrp[wgrp].wg_curqgrp) 2067 { 2068 e->e_id = NULL; 2069 if (bitset(RWG_FORK, flags)) 2070 finis(true, true, ExitStat); 2071 return true; /* we're done */ 2072 } 2073 } 2074 2075 qdir = Queue[qgrp]->qg_curnum; /* round-robin init of queue position */ 2076#if _FFR_QUEUE_SCHED_DBG 2077 if (tTd(69, 12)) 2078 sm_syslog(LOG_INFO, NOQID, 2079 "rwg: wgrp=%d, qgrp=%d, qdir=%d, name=%s, curqgrp=%d, numgrps=%d", 2080 wgrp, qgrp, qdir, qid_printqueue(qgrp, qdir), 2081 WorkGrp[wgrp].wg_curqgrp, WorkGrp[wgrp].wg_numqgrp); 2082#endif /* _FFR_QUEUE_SCHED_DBG */ 2083 2084#if HASNICE 2085 /* tweak niceness of queue runs */ 2086 if (Queue[qgrp]->qg_nice > 0) 2087 (void) nice(Queue[qgrp]->qg_nice); 2088#endif /* HASNICE */ 2089 2090 /* XXX running queue group... */ 2091 sm_setproctitle(true, CurEnv, "running queue: %s", 2092 qid_printqueue(qgrp, qdir)); 2093 2094 if (LogLevel > 69 || tTd(63, 99)) 2095 sm_syslog(LOG_DEBUG, NOQID, 2096 "runqueue %s, pid=%d, forkflag=%d", 2097 qid_printqueue(qgrp, qdir), (int) CurrentPid, 2098 bitset(RWG_FORK, flags)); 2099 2100 /* 2101 ** Start making passes through the queue. 2102 ** First, read and sort the entire queue. 2103 ** Then, process the work in that order. 2104 ** But if you take too long, start over. 2105 */ 2106 2107 for (i = 0; i < Queue[qgrp]->qg_numqueues; i++) 2108 { 2109 (void) gatherq(qgrp, qdir, false, &full, &more, &h); 2110#if SM_CONF_SHM 2111 if (ShmId != SM_SHM_NO_ID) 2112 QSHM_ENTRIES(Queue[qgrp]->qg_qpaths[qdir].qp_idx) = h; 2113#endif /* SM_CONF_SHM */ 2114 /* If there are no more items in this queue advance */ 2115 if (!more) 2116 { 2117 /* A round-robin advance */ 2118 qdir++; 2119 qdir %= Queue[qgrp]->qg_numqueues; 2120 } 2121 2122 /* Has the WorkList reached the limit? */ 2123 if (full) 2124 break; /* don't try to gather more */ 2125 } 2126 2127 /* order the existing work requests */ 2128 njobs = sortq(Queue[qgrp]->qg_maxlist); 2129 Queue[qgrp]->qg_curnum = qdir; /* update */ 2130 2131 2132 if (!Verbose && bitnset(QD_FORK, Queue[qgrp]->qg_flags)) 2133 { 2134 int loop, maxrunners; 2135 pid_t pid; 2136 2137 /* 2138 ** For this WorkQ we want to fork off N children (maxrunners) 2139 ** at this point. Each child has a copy of WorkQ. Each child 2140 ** will process every N-th item. The parent will wait for all 2141 ** of the children to finish before moving on to the next 2142 ** queue group within the work group. This saves us forking 2143 ** a new runner-child for each work item. 2144 ** It's valid for qg_maxqrun == 0 since this may be an 2145 ** explicit "don't run this queue" setting. 2146 */ 2147 2148 maxrunners = Queue[qgrp]->qg_maxqrun; 2149 2150 /* 2151 ** If no runners are configured for this group but 2152 ** the queue is "forced" then lets use 1 runner. 2153 */ 2154 2155 if (maxrunners == 0 && bitset(RWG_FORCE, flags)) 2156 maxrunners = 1; 2157 2158 /* No need to have more runners then there are jobs */ 2159 if (maxrunners > njobs) 2160 maxrunners = njobs; 2161 for (loop = 0; loop < maxrunners; loop++) 2162 { 2163 /* 2164 ** Since the delivery may happen in a child and the 2165 ** parent does not wait, the parent may close the 2166 ** maps thereby removing any shared memory used by 2167 ** the map. Therefore, close the maps now so the 2168 ** child will dynamically open them if necessary. 2169 */ 2170 2171 closemaps(false); 2172 2173 pid = fork(); 2174 if (pid < 0) 2175 { 2176 syserr("run_work_group: cannot fork"); 2177 return false; 2178 } 2179 else if (pid > 0) 2180 { 2181 /* parent -- clean out connection cache */ 2182 mci_flush(false, NULL); 2183#if _FFR_SKIP_DOMAINS 2184 if (QueueSortOrder == QSO_BYHOST) 2185 { 2186 sequenceno += skip_domains(1); 2187 } 2188 else 2189#endif /* _FFR_SKIP_DOMAINS */ 2190 { 2191 /* for the skip */ 2192 WorkQ = WorkQ->w_next; 2193 sequenceno++; 2194 } 2195 proc_list_add(pid, "Queue child runner process", 2196 PROC_QUEUE_CHILD, 0, -1, NULL); 2197 2198 /* No additional work, no additional runners */ 2199 if (WorkQ == NULL) 2200 break; 2201 } 2202 else 2203 { 2204 /* child -- Reset global flags */ 2205 RestartRequest = NULL; 2206 RestartWorkGroup = false; 2207 ShutdownRequest = NULL; 2208 PendingSignal = 0; 2209 CurrentPid = getpid(); 2210 close_sendmail_pid(); 2211 2212 /* 2213 ** Initialize exception stack and default 2214 ** exception handler for child process. 2215 ** When fork()'d the child now has a private 2216 ** copy of WorkQ at its current position. 2217 */ 2218 2219 sm_exc_newthread(fatal_error); 2220 2221 /* 2222 ** SMTP processes (whether -bd or -bs) set 2223 ** SIGCHLD to reapchild to collect 2224 ** children status. However, at delivery 2225 ** time, that status must be collected 2226 ** by sm_wait() to be dealt with properly 2227 ** (check success of delivery based 2228 ** on status code, etc). Therefore, if we 2229 ** are an SMTP process, reset SIGCHLD 2230 ** back to the default so reapchild 2231 ** doesn't collect status before 2232 ** sm_wait(). 2233 */ 2234 2235 if (OpMode == MD_SMTP || 2236 OpMode == MD_DAEMON || 2237 MaxQueueChildren > 0) 2238 { 2239 proc_list_clear(); 2240 sm_releasesignal(SIGCHLD); 2241 (void) sm_signal(SIGCHLD, SIG_DFL); 2242 } 2243 2244 /* child -- error messages to the transcript */ 2245 QuickAbort = OnlyOneError = false; 2246 runner_work(e, sequenceno, true, 2247 maxrunners, njobs); 2248 2249 /* This child is done */ 2250 finis(true, true, ExitStat); 2251 /* NOTREACHED */ 2252 } 2253 } 2254 2255 sm_releasesignal(SIGCHLD); 2256 2257 /* 2258 ** Wait until all of the runners have completed before 2259 ** seeing if there is another queue group in the 2260 ** work group to process. 2261 ** XXX Future enhancement: don't wait() for all children 2262 ** here, just go ahead and make sure that overall the number 2263 ** of children is not exceeded. 2264 */ 2265 2266 while (CurChildren > 0) 2267 { 2268 int status; 2269 pid_t ret; 2270 2271 while ((ret = sm_wait(&status)) <= 0) 2272 continue; 2273 proc_list_drop(ret, status, NULL); 2274 } 2275 } 2276 else if (Queue[qgrp]->qg_maxqrun > 0 || bitset(RWG_FORCE, flags)) 2277 { 2278 /* 2279 ** When current process will not fork children to do the work, 2280 ** it will do the work itself. The 'skip' will be 1 since 2281 ** there are no child runners to divide the work across. 2282 */ 2283 2284 runner_work(e, sequenceno, false, 1, njobs); 2285 } 2286 2287 /* free memory allocated by newenvelope() above */ 2288 sm_rpool_free(rpool); 2289 QueueEnvelope.e_rpool = NULL; 2290 2291 /* Are there still more queues in the work group to process? */ 2292 if (endgrp != WorkGrp[wgrp].wg_curqgrp) 2293 { 2294 rpool = sm_rpool_new_x(NULL); 2295 e = newenvelope(&QueueEnvelope, CurEnv, rpool); 2296 e->e_flags = BlankEnvelope.e_flags; 2297 goto domorework; 2298 } 2299 2300 /* No more queues in work group to process. Now check persistent. */ 2301 if (bitset(RWG_PERSISTENT, flags)) 2302 { 2303 sequenceno = 1; 2304 sm_setproctitle(true, CurEnv, "running queue: %s", 2305 qid_printqueue(qgrp, qdir)); 2306 2307 /* 2308 ** close bogus maps, i.e., maps which caused a tempfail, 2309 ** so we get fresh map connections on the next lookup. 2310 ** closemaps() is also called when children are started. 2311 */ 2312 2313 closemaps(true); 2314 2315 /* Close any cached connections. */ 2316 mci_flush(true, NULL); 2317 2318 /* Clean out expired related entries. */ 2319 rmexpstab(); 2320 2321#if NAMED_BIND 2322 /* Update MX records for FallbackMX. */ 2323 if (FallbackMX != NULL) 2324 (void) getfallbackmxrr(FallbackMX); 2325#endif /* NAMED_BIND */ 2326 2327#if USERDB 2328 /* close UserDatabase */ 2329 _udbx_close(); 2330#endif /* USERDB */ 2331 2332#if SM_HEAP_CHECK 2333 if (sm_debug_active(&SmHeapCheck, 2) 2334 && access("memdump", F_OK) == 0 2335 ) 2336 { 2337 SM_FILE_T *out; 2338 2339 remove("memdump"); 2340 out = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, 2341 "memdump.out", SM_IO_APPEND, NULL); 2342 if (out != NULL) 2343 { 2344 (void) sm_io_fprintf(out, SM_TIME_DEFAULT, "----------------------\n"); 2345 sm_heap_report(out, 2346 sm_debug_level(&SmHeapCheck) - 1); 2347 (void) sm_io_close(out, SM_TIME_DEFAULT); 2348 } 2349 } 2350#endif /* SM_HEAP_CHECK */ 2351 2352 /* let me rest for a second to catch my breath */ 2353 if (njobs == 0 && WorkGrp[wgrp].wg_lowqintvl < MIN_SLEEP_TIME) 2354 sleep(MIN_SLEEP_TIME); 2355 else if (WorkGrp[wgrp].wg_lowqintvl <= 0) 2356 sleep(QueueIntvl > 0 ? QueueIntvl : MIN_SLEEP_TIME); 2357 else 2358 sleep(WorkGrp[wgrp].wg_lowqintvl); 2359 2360 /* 2361 ** Get the LA outside the WorkQ loop if necessary. 2362 ** In a persistent queue runner the code is repeated over 2363 ** and over but gatherq() may ignore entries due to 2364 ** shouldqueue() (do we really have to do this twice?). 2365 ** Hence the queue runners would just idle around when once 2366 ** CurrentLA caused all entries in a queue to be ignored. 2367 */ 2368 2369 if (njobs == 0) 2370 SM_GET_LA(now); 2371 rpool = sm_rpool_new_x(NULL); 2372 e = newenvelope(&QueueEnvelope, CurEnv, rpool); 2373 e->e_flags = BlankEnvelope.e_flags; 2374 goto domorework; 2375 } 2376 2377 /* exit without the usual cleanup */ 2378 e->e_id = NULL; 2379 if (bitset(RWG_FORK, flags)) 2380 finis(true, true, ExitStat); 2381 /* NOTREACHED */ 2382 return true; 2383} 2384 2385/* 2386** DOQUEUERUN -- do a queue run? 2387*/ 2388 2389bool 2390doqueuerun() 2391{ 2392 return DoQueueRun; 2393} 2394 2395/* 2396** RUNQUEUEEVENT -- Sets a flag to indicate that a queue run should be done. 2397** 2398** Parameters: 2399** none. 2400** 2401** Returns: 2402** none. 2403** 2404** Side Effects: 2405** The invocation of this function via an alarm may interrupt 2406** a set of actions. Thus errno may be set in that context. 2407** We need to restore errno at the end of this function to ensure 2408** that any work done here that sets errno doesn't return a 2409** misleading/false errno value. Errno may be EINTR upon entry to 2410** this function because of non-restartable/continuable system 2411** API was active. Iff this is true we will override errno as 2412** a timeout (as a more accurate error message). 2413** 2414** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 2415** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 2416** DOING. 2417*/ 2418 2419void 2420runqueueevent(ignore) 2421 int ignore; 2422{ 2423 int save_errno = errno; 2424 2425 /* 2426 ** Set the general bit that we want a queue run, 2427 ** tested in doqueuerun() 2428 */ 2429 2430 DoQueueRun = true; 2431#if _FFR_QUEUE_SCHED_DBG 2432 if (tTd(69, 10)) 2433 sm_syslog(LOG_INFO, NOQID, "rqe: done"); 2434#endif /* _FFR_QUEUE_SCHED_DBG */ 2435 2436 errno = save_errno; 2437 if (errno == EINTR) 2438 errno = ETIMEDOUT; 2439} 2440/* 2441** GATHERQ -- gather messages from the message queue(s) the work queue. 2442** 2443** Parameters: 2444** qgrp -- the index of the queue group. 2445** qdir -- the index of the queue directory. 2446** doall -- if set, include everything in the queue (even 2447** the jobs that cannot be run because the load 2448** average is too high, or MaxQueueRun is reached). 2449** Otherwise, exclude those jobs. 2450** full -- (optional) to be set 'true' if WorkList is full 2451** more -- (optional) to be set 'true' if there are still more 2452** messages in this queue not added to WorkList 2453** pnentries -- (optional) total nuber of entries in queue 2454** 2455** Returns: 2456** The number of request in the queue (not necessarily 2457** the number of requests in WorkList however). 2458** 2459** Side Effects: 2460** prepares available work into WorkList 2461*/ 2462 2463#define NEED_P 0001 /* 'P': priority */ 2464#define NEED_T 0002 /* 'T': time */ 2465#define NEED_R 0004 /* 'R': recipient */ 2466#define NEED_S 0010 /* 'S': sender */ 2467#define NEED_H 0020 /* host */ 2468#define HAS_QUARANTINE 0040 /* has an unexpected 'q' line */ 2469#define NEED_QUARANTINE 0100 /* 'q': reason */ 2470 2471static WORK *WorkList = NULL; /* list of unsort work */ 2472static int WorkListSize = 0; /* current max size of WorkList */ 2473static int WorkListCount = 0; /* # of work items in WorkList */ 2474 2475static int 2476gatherq(qgrp, qdir, doall, full, more, pnentries) 2477 int qgrp; 2478 int qdir; 2479 bool doall; 2480 bool *full; 2481 bool *more; 2482 int *pnentries; 2483{ 2484 register struct dirent *d; 2485 register WORK *w; 2486 register char *p; 2487 DIR *f; 2488 int i, num_ent, wn, nentries; 2489 QUEUE_CHAR *check; 2490 char qd[MAXPATHLEN]; 2491 char qf[MAXPATHLEN]; 2492 2493 wn = WorkListCount - 1; 2494 num_ent = 0; 2495 nentries = 0; 2496 if (qdir == NOQDIR) 2497 (void) sm_strlcpy(qd, ".", sizeof(qd)); 2498 else 2499 (void) sm_strlcpyn(qd, sizeof(qd), 2, 2500 Queue[qgrp]->qg_qpaths[qdir].qp_name, 2501 (bitset(QP_SUBQF, 2502 Queue[qgrp]->qg_qpaths[qdir].qp_subdirs) 2503 ? "/qf" : "")); 2504 2505 if (tTd(41, 1)) 2506 { 2507 sm_dprintf("gatherq:\n"); 2508 2509 check = QueueLimitId; 2510 while (check != NULL) 2511 { 2512 sm_dprintf("\tQueueLimitId = %s%s\n", 2513 check->queue_negate ? "!" : "", 2514 check->queue_match); 2515 check = check->queue_next; 2516 } 2517 2518 check = QueueLimitSender; 2519 while (check != NULL) 2520 { 2521 sm_dprintf("\tQueueLimitSender = %s%s\n", 2522 check->queue_negate ? "!" : "", 2523 check->queue_match); 2524 check = check->queue_next; 2525 } 2526 2527 check = QueueLimitRecipient; 2528 while (check != NULL) 2529 { 2530 sm_dprintf("\tQueueLimitRecipient = %s%s\n", 2531 check->queue_negate ? "!" : "", 2532 check->queue_match); 2533 check = check->queue_next; 2534 } 2535 2536 if (QueueMode == QM_QUARANTINE) 2537 { 2538 check = QueueLimitQuarantine; 2539 while (check != NULL) 2540 { 2541 sm_dprintf("\tQueueLimitQuarantine = %s%s\n", 2542 check->queue_negate ? "!" : "", 2543 check->queue_match); 2544 check = check->queue_next; 2545 } 2546 } 2547 } 2548 2549 /* open the queue directory */ 2550 f = opendir(qd); 2551 if (f == NULL) 2552 { 2553 syserr("gatherq: cannot open \"%s\"", 2554 qid_printqueue(qgrp, qdir)); 2555 if (full != NULL) 2556 *full = WorkListCount >= MaxQueueRun && MaxQueueRun > 0; 2557 if (more != NULL) 2558 *more = false; 2559 return 0; 2560 } 2561 2562 /* 2563 ** Read the work directory. 2564 */ 2565 2566 while ((d = readdir(f)) != NULL) 2567 { 2568 SM_FILE_T *cf; 2569 int qfver = 0; 2570 char lbuf[MAXNAME + 1]; 2571 struct stat sbuf; 2572 2573 if (tTd(41, 50)) 2574 sm_dprintf("gatherq: checking %s..", d->d_name); 2575 2576 /* is this an interesting entry? */ 2577 if (!(((QueueMode == QM_NORMAL && 2578 d->d_name[0] == NORMQF_LETTER) || 2579 (QueueMode == QM_QUARANTINE && 2580 d->d_name[0] == QUARQF_LETTER) || 2581 (QueueMode == QM_LOST && 2582 d->d_name[0] == LOSEQF_LETTER)) && 2583 d->d_name[1] == 'f')) 2584 { 2585 if (tTd(41, 50)) 2586 sm_dprintf(" skipping\n"); 2587 continue; 2588 } 2589 if (tTd(41, 50)) 2590 sm_dprintf("\n"); 2591 2592 if (strlen(d->d_name) >= MAXQFNAME) 2593 { 2594 if (Verbose) 2595 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2596 "gatherq: %s too long, %d max characters\n", 2597 d->d_name, MAXQFNAME); 2598 if (LogLevel > 0) 2599 sm_syslog(LOG_ALERT, NOQID, 2600 "gatherq: %s too long, %d max characters", 2601 d->d_name, MAXQFNAME); 2602 continue; 2603 } 2604 2605 ++nentries; 2606 check = QueueLimitId; 2607 while (check != NULL) 2608 { 2609 if (strcontainedin(false, check->queue_match, 2610 d->d_name) != check->queue_negate) 2611 break; 2612 else 2613 check = check->queue_next; 2614 } 2615 if (QueueLimitId != NULL && check == NULL) 2616 continue; 2617 2618 /* grow work list if necessary */ 2619 if (++wn >= MaxQueueRun && MaxQueueRun > 0) 2620 { 2621 if (wn == MaxQueueRun && LogLevel > 0) 2622 sm_syslog(LOG_WARNING, NOQID, 2623 "WorkList for %s maxed out at %d", 2624 qid_printqueue(qgrp, qdir), 2625 MaxQueueRun); 2626 if (doall) 2627 continue; /* just count entries */ 2628 break; 2629 } 2630 if (wn >= WorkListSize) 2631 { 2632 grow_wlist(qgrp, qdir); 2633 if (wn >= WorkListSize) 2634 continue; 2635 } 2636 SM_ASSERT(wn >= 0); 2637 w = &WorkList[wn]; 2638 2639 (void) sm_strlcpyn(qf, sizeof(qf), 3, qd, "/", d->d_name); 2640 if (stat(qf, &sbuf) < 0) 2641 { 2642 if (errno != ENOENT) 2643 sm_syslog(LOG_INFO, NOQID, 2644 "gatherq: can't stat %s/%s", 2645 qid_printqueue(qgrp, qdir), 2646 d->d_name); 2647 wn--; 2648 continue; 2649 } 2650 if (!bitset(S_IFREG, sbuf.st_mode)) 2651 { 2652 /* Yikes! Skip it or we will hang on open! */ 2653 if (!((d->d_name[0] == DATAFL_LETTER || 2654 d->d_name[0] == NORMQF_LETTER || 2655 d->d_name[0] == QUARQF_LETTER || 2656 d->d_name[0] == LOSEQF_LETTER || 2657 d->d_name[0] == XSCRPT_LETTER) && 2658 d->d_name[1] == 'f' && d->d_name[2] == '\0')) 2659 syserr("gatherq: %s/%s is not a regular file", 2660 qid_printqueue(qgrp, qdir), d->d_name); 2661 wn--; 2662 continue; 2663 } 2664 2665 /* avoid work if possible */ 2666 if ((QueueSortOrder == QSO_BYFILENAME || 2667 QueueSortOrder == QSO_BYMODTIME || 2668 QueueSortOrder == QSO_NONE || 2669 QueueSortOrder == QSO_RANDOM) && 2670 QueueLimitQuarantine == NULL && 2671 QueueLimitSender == NULL && 2672 QueueLimitRecipient == NULL) 2673 { 2674 w->w_qgrp = qgrp; 2675 w->w_qdir = qdir; 2676 w->w_name = newstr(d->d_name); 2677 w->w_host = NULL; 2678 w->w_lock = w->w_tooyoung = false; 2679 w->w_pri = 0; 2680 w->w_ctime = 0; 2681 w->w_mtime = sbuf.st_mtime; 2682 ++num_ent; 2683 continue; 2684 } 2685 2686 /* open control file */ 2687 cf = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, qf, SM_IO_RDONLY_B, 2688 NULL); 2689 if (cf == NULL && OpMode != MD_PRINT) 2690 { 2691 /* this may be some random person sending hir msgs */ 2692 if (tTd(41, 2)) 2693 sm_dprintf("gatherq: cannot open %s: %s\n", 2694 d->d_name, sm_errstring(errno)); 2695 errno = 0; 2696 wn--; 2697 continue; 2698 } 2699 w->w_qgrp = qgrp; 2700 w->w_qdir = qdir; 2701 w->w_name = newstr(d->d_name); 2702 w->w_host = NULL; 2703 if (cf != NULL) 2704 { 2705 w->w_lock = !lockfile(sm_io_getinfo(cf, SM_IO_WHAT_FD, 2706 NULL), 2707 w->w_name, NULL, 2708 LOCK_SH|LOCK_NB); 2709 } 2710 w->w_tooyoung = false; 2711 2712 /* make sure jobs in creation don't clog queue */ 2713 w->w_pri = 0x7fffffff; 2714 w->w_ctime = 0; 2715 w->w_mtime = sbuf.st_mtime; 2716 2717 /* extract useful information */ 2718 i = NEED_P|NEED_T; 2719 if (QueueSortOrder == QSO_BYHOST 2720#if _FFR_RHS 2721 || QueueSortOrder == QSO_BYSHUFFLE 2722#endif /* _FFR_RHS */ 2723 ) 2724 { 2725 /* need w_host set for host sort order */ 2726 i |= NEED_H; 2727 } 2728 if (QueueLimitSender != NULL) 2729 i |= NEED_S; 2730 if (QueueLimitRecipient != NULL) 2731 i |= NEED_R; 2732 if (QueueLimitQuarantine != NULL) 2733 i |= NEED_QUARANTINE; 2734 while (cf != NULL && i != 0 && 2735 sm_io_fgets(cf, SM_TIME_DEFAULT, lbuf, 2736 sizeof(lbuf)) != NULL) 2737 { 2738 int c; 2739 time_t age; 2740 2741 p = strchr(lbuf, '\n'); 2742 if (p != NULL) 2743 *p = '\0'; 2744 else 2745 { 2746 /* flush rest of overly long line */ 2747 while ((c = sm_io_getc(cf, SM_TIME_DEFAULT)) 2748 != SM_IO_EOF && c != '\n') 2749 continue; 2750 } 2751 2752 switch (lbuf[0]) 2753 { 2754 case 'V': 2755 qfver = atoi(&lbuf[1]); 2756 break; 2757 2758 case 'P': 2759 w->w_pri = atol(&lbuf[1]); 2760 i &= ~NEED_P; 2761 break; 2762 2763 case 'T': 2764 w->w_ctime = atol(&lbuf[1]); 2765 i &= ~NEED_T; 2766 break; 2767 2768 case 'q': 2769 if (QueueMode != QM_QUARANTINE && 2770 QueueMode != QM_LOST) 2771 { 2772 if (tTd(41, 49)) 2773 sm_dprintf("%s not marked as quarantined but has a 'q' line\n", 2774 w->w_name); 2775 i |= HAS_QUARANTINE; 2776 } 2777 else if (QueueMode == QM_QUARANTINE) 2778 { 2779 if (QueueLimitQuarantine == NULL) 2780 { 2781 i &= ~NEED_QUARANTINE; 2782 break; 2783 } 2784 p = &lbuf[1]; 2785 check = QueueLimitQuarantine; 2786 while (check != NULL) 2787 { 2788 if (strcontainedin(false, 2789 check->queue_match, 2790 p) != 2791 check->queue_negate) 2792 break; 2793 else 2794 check = check->queue_next; 2795 } 2796 if (check != NULL) 2797 i &= ~NEED_QUARANTINE; 2798 } 2799 break; 2800 2801 case 'R': 2802 if (w->w_host == NULL && 2803 (p = strrchr(&lbuf[1], '@')) != NULL) 2804 { 2805#if _FFR_RHS 2806 if (QueueSortOrder == QSO_BYSHUFFLE) 2807 w->w_host = newstr(&p[1]); 2808 else 2809#endif /* _FFR_RHS */ 2810 w->w_host = strrev(&p[1]); 2811 makelower(w->w_host); 2812 i &= ~NEED_H; 2813 } 2814 if (QueueLimitRecipient == NULL) 2815 { 2816 i &= ~NEED_R; 2817 break; 2818 } 2819 if (qfver > 0) 2820 { 2821 p = strchr(&lbuf[1], ':'); 2822 if (p == NULL) 2823 p = &lbuf[1]; 2824 else 2825 ++p; /* skip over ':' */ 2826 } 2827 else 2828 p = &lbuf[1]; 2829 check = QueueLimitRecipient; 2830 while (check != NULL) 2831 { 2832 if (strcontainedin(true, 2833 check->queue_match, 2834 p) != 2835 check->queue_negate) 2836 break; 2837 else 2838 check = check->queue_next; 2839 } 2840 if (check != NULL) 2841 i &= ~NEED_R; 2842 break; 2843 2844 case 'S': 2845 check = QueueLimitSender; 2846 while (check != NULL) 2847 { 2848 if (strcontainedin(true, 2849 check->queue_match, 2850 &lbuf[1]) != 2851 check->queue_negate) 2852 break; 2853 else 2854 check = check->queue_next; 2855 } 2856 if (check != NULL) 2857 i &= ~NEED_S; 2858 break; 2859 2860 case 'K': 2861#if _FFR_EXPDELAY 2862 if (MaxQueueAge > 0) 2863 { 2864 time_t lasttry, delay; 2865 2866 lasttry = (time_t) atol(&lbuf[1]); 2867 delay = MIN(lasttry - w->w_ctime, 2868 MaxQueueAge); 2869 age = curtime() - lasttry; 2870 if (age < delay) 2871 w->w_tooyoung = true; 2872 break; 2873 } 2874#endif /* _FFR_EXPDELAY */ 2875 2876 age = curtime() - (time_t) atol(&lbuf[1]); 2877 if (age >= 0 && MinQueueAge > 0 && 2878 age < MinQueueAge) 2879 w->w_tooyoung = true; 2880 break; 2881 2882 case 'N': 2883 if (atol(&lbuf[1]) == 0) 2884 w->w_tooyoung = false; 2885 break; 2886 } 2887 } 2888 if (cf != NULL) 2889 (void) sm_io_close(cf, SM_TIME_DEFAULT); 2890 2891 if ((!doall && (shouldqueue(w->w_pri, w->w_ctime) || 2892 w->w_tooyoung)) || 2893 bitset(HAS_QUARANTINE, i) || 2894 bitset(NEED_QUARANTINE, i) || 2895 bitset(NEED_R|NEED_S, i)) 2896 { 2897 /* don't even bother sorting this job in */ 2898 if (tTd(41, 49)) 2899 sm_dprintf("skipping %s (%x)\n", w->w_name, i); 2900 sm_free(w->w_name); /* XXX */ 2901 if (w->w_host != NULL) 2902 sm_free(w->w_host); /* XXX */ 2903 wn--; 2904 } 2905 else 2906 ++num_ent; 2907 } 2908 (void) closedir(f); 2909 wn++; 2910 2911 i = wn - WorkListCount; 2912 WorkListCount += SM_MIN(num_ent, WorkListSize); 2913 2914 if (more != NULL) 2915 *more = WorkListCount < wn; 2916 2917 if (full != NULL) 2918 *full = (wn >= MaxQueueRun && MaxQueueRun > 0) || 2919 (WorkList == NULL && wn > 0); 2920 2921 if (pnentries != NULL) 2922 *pnentries = nentries; 2923 return i; 2924} 2925/* 2926** SORTQ -- sort the work list 2927** 2928** First the old WorkQ is cleared away. Then the WorkList is sorted 2929** for all items so that important (higher sorting value) items are not 2930** trunctated off. Then the most important items are moved from 2931** WorkList to WorkQ. The lower count of 'max' or MaxListCount items 2932** are moved. 2933** 2934** Parameters: 2935** max -- maximum number of items to be placed in WorkQ 2936** 2937** Returns: 2938** the number of items in WorkQ 2939** 2940** Side Effects: 2941** WorkQ gets released and filled with new work. WorkList 2942** gets released. Work items get sorted in order. 2943*/ 2944 2945static int 2946sortq(max) 2947 int max; 2948{ 2949 register int i; /* local counter */ 2950 register WORK *w; /* tmp item pointer */ 2951 int wc = WorkListCount; /* trim size for WorkQ */ 2952 2953 if (WorkQ != NULL) 2954 { 2955 WORK *nw; 2956 2957 /* Clear out old WorkQ. */ 2958 for (w = WorkQ; w != NULL; w = nw) 2959 { 2960 nw = w->w_next; 2961 sm_free(w->w_name); /* XXX */ 2962 if (w->w_host != NULL) 2963 sm_free(w->w_host); /* XXX */ 2964 sm_free((char *) w); /* XXX */ 2965 } 2966 WorkQ = NULL; 2967 } 2968 2969 if (WorkList == NULL || wc <= 0) 2970 return 0; 2971 2972 /* 2973 ** The sort now takes place using all of the items in WorkList. 2974 ** The list gets trimmed to the most important items after the sort. 2975 ** If the trim were to happen before the sort then one or more 2976 ** important items might get truncated off -- not what we want. 2977 */ 2978 2979 if (QueueSortOrder == QSO_BYHOST) 2980 { 2981 /* 2982 ** Sort the work directory for the first time, 2983 ** based on host name, lock status, and priority. 2984 */ 2985 2986 qsort((char *) WorkList, wc, sizeof(*WorkList), workcmpf1); 2987 2988 /* 2989 ** If one message to host is locked, "lock" all messages 2990 ** to that host. 2991 */ 2992 2993 i = 0; 2994 while (i < wc) 2995 { 2996 if (!WorkList[i].w_lock) 2997 { 2998 i++; 2999 continue; 3000 } 3001 w = &WorkList[i]; 3002 while (++i < wc) 3003 { 3004 if (WorkList[i].w_host == NULL && 3005 w->w_host == NULL) 3006 WorkList[i].w_lock = true; 3007 else if (WorkList[i].w_host != NULL && 3008 w->w_host != NULL && 3009 sm_strcasecmp(WorkList[i].w_host, 3010 w->w_host) == 0) 3011 WorkList[i].w_lock = true; 3012 else 3013 break; 3014 } 3015 } 3016 3017 /* 3018 ** Sort the work directory for the second time, 3019 ** based on lock status, host name, and priority. 3020 */ 3021 3022 qsort((char *) WorkList, wc, sizeof(*WorkList), workcmpf2); 3023 } 3024 else if (QueueSortOrder == QSO_BYTIME) 3025 { 3026 /* 3027 ** Simple sort based on submission time only. 3028 */ 3029 3030 qsort((char *) WorkList, wc, sizeof(*WorkList), workcmpf3); 3031 } 3032 else if (QueueSortOrder == QSO_BYFILENAME) 3033 { 3034 /* 3035 ** Sort based on queue filename. 3036 */ 3037 3038 qsort((char *) WorkList, wc, sizeof(*WorkList), workcmpf4); 3039 } 3040 else if (QueueSortOrder == QSO_RANDOM) 3041 { 3042 /* 3043 ** Sort randomly. To avoid problems with an instable sort, 3044 ** use a random index into the queue file name to start 3045 ** comparison. 3046 */ 3047 3048 randi = get_rand_mod(MAXQFNAME); 3049 if (randi < 2) 3050 randi = 3; 3051 qsort((char *) WorkList, wc, sizeof(*WorkList), workcmpf5); 3052 } 3053 else if (QueueSortOrder == QSO_BYMODTIME) 3054 { 3055 /* 3056 ** Simple sort based on modification time of queue file. 3057 ** This puts the oldest items first. 3058 */ 3059 3060 qsort((char *) WorkList, wc, sizeof(*WorkList), workcmpf6); 3061 } 3062#if _FFR_RHS 3063 else if (QueueSortOrder == QSO_BYSHUFFLE) 3064 { 3065 /* 3066 ** Simple sort based on shuffled host name. 3067 */ 3068 3069 init_shuffle_alphabet(); 3070 qsort((char *) WorkList, wc, sizeof(*WorkList), workcmpf7); 3071 } 3072#endif /* _FFR_RHS */ 3073 else if (QueueSortOrder == QSO_BYPRIORITY) 3074 { 3075 /* 3076 ** Simple sort based on queue priority only. 3077 */ 3078 3079 qsort((char *) WorkList, wc, sizeof(*WorkList), workcmpf0); 3080 } 3081 /* else don't sort at all */ 3082 3083 /* Check if the per queue group item limit will be exceeded */ 3084 if (wc > max && max > 0) 3085 wc = max; 3086 3087 /* 3088 ** Convert the work list into canonical form. 3089 ** Should be turning it into a list of envelopes here perhaps. 3090 ** Only take the most important items up to the per queue group 3091 ** maximum. 3092 */ 3093 3094 for (i = wc; --i >= 0; ) 3095 { 3096 w = (WORK *) xalloc(sizeof(*w)); 3097 w->w_qgrp = WorkList[i].w_qgrp; 3098 w->w_qdir = WorkList[i].w_qdir; 3099 w->w_name = WorkList[i].w_name; 3100 w->w_host = WorkList[i].w_host; 3101 w->w_lock = WorkList[i].w_lock; 3102 w->w_tooyoung = WorkList[i].w_tooyoung; 3103 w->w_pri = WorkList[i].w_pri; 3104 w->w_ctime = WorkList[i].w_ctime; 3105 w->w_mtime = WorkList[i].w_mtime; 3106 w->w_next = WorkQ; 3107 WorkQ = w; 3108 } 3109 3110 /* free the rest of the list */ 3111 for (i = WorkListCount; --i >= wc; ) 3112 { 3113 sm_free(WorkList[i].w_name); 3114 if (WorkList[i].w_host != NULL) 3115 sm_free(WorkList[i].w_host); 3116 } 3117 3118 if (WorkList != NULL) 3119 sm_free(WorkList); /* XXX */ 3120 WorkList = NULL; 3121 WorkListSize = 0; 3122 WorkListCount = 0; 3123 3124 if (tTd(40, 1)) 3125 { 3126 for (w = WorkQ; w != NULL; w = w->w_next) 3127 { 3128 if (w->w_host != NULL) 3129 sm_dprintf("%22s: pri=%ld %s\n", 3130 w->w_name, w->w_pri, w->w_host); 3131 else 3132 sm_dprintf("%32s: pri=%ld\n", 3133 w->w_name, w->w_pri); 3134 } 3135 } 3136 3137 return wc; /* return number of WorkQ items */ 3138} 3139/* 3140** GROW_WLIST -- make the work list larger 3141** 3142** Parameters: 3143** qgrp -- the index for the queue group. 3144** qdir -- the index for the queue directory. 3145** 3146** Returns: 3147** none. 3148** 3149** Side Effects: 3150** Adds another QUEUESEGSIZE entries to WorkList if possible. 3151** It can fail if there isn't enough memory, so WorkListSize 3152** should be checked again upon return. 3153*/ 3154 3155static void 3156grow_wlist(qgrp, qdir) 3157 int qgrp; 3158 int qdir; 3159{ 3160 if (tTd(41, 1)) 3161 sm_dprintf("grow_wlist: WorkListSize=%d\n", WorkListSize); 3162 if (WorkList == NULL) 3163 { 3164 WorkList = (WORK *) xalloc((sizeof(*WorkList)) * 3165 (QUEUESEGSIZE + 1)); 3166 WorkListSize = QUEUESEGSIZE; 3167 } 3168 else 3169 { 3170 int newsize = WorkListSize + QUEUESEGSIZE; 3171 WORK *newlist = (WORK *) sm_realloc((char *) WorkList, 3172 (unsigned) sizeof(WORK) * (newsize + 1)); 3173 3174 if (newlist != NULL) 3175 { 3176 WorkListSize = newsize; 3177 WorkList = newlist; 3178 if (LogLevel > 1) 3179 { 3180 sm_syslog(LOG_INFO, NOQID, 3181 "grew WorkList for %s to %d", 3182 qid_printqueue(qgrp, qdir), 3183 WorkListSize); 3184 } 3185 } 3186 else if (LogLevel > 0) 3187 { 3188 sm_syslog(LOG_ALERT, NOQID, 3189 "FAILED to grow WorkList for %s to %d", 3190 qid_printqueue(qgrp, qdir), newsize); 3191 } 3192 } 3193 if (tTd(41, 1)) 3194 sm_dprintf("grow_wlist: WorkListSize now %d\n", WorkListSize); 3195} 3196/* 3197** WORKCMPF0 -- simple priority-only compare function. 3198** 3199** Parameters: 3200** a -- the first argument. 3201** b -- the second argument. 3202** 3203** Returns: 3204** -1 if a < b 3205** 0 if a == b 3206** +1 if a > b 3207** 3208*/ 3209 3210static int 3211workcmpf0(a, b) 3212 register WORK *a; 3213 register WORK *b; 3214{ 3215 long pa = a->w_pri; 3216 long pb = b->w_pri; 3217 3218 if (pa == pb) 3219 return 0; 3220 else if (pa > pb) 3221 return 1; 3222 else 3223 return -1; 3224} 3225/* 3226** WORKCMPF1 -- first compare function for ordering work based on host name. 3227** 3228** Sorts on host name, lock status, and priority in that order. 3229** 3230** Parameters: 3231** a -- the first argument. 3232** b -- the second argument. 3233** 3234** Returns: 3235** <0 if a < b 3236** 0 if a == b 3237** >0 if a > b 3238** 3239*/ 3240 3241static int 3242workcmpf1(a, b) 3243 register WORK *a; 3244 register WORK *b; 3245{ 3246 int i; 3247 3248 /* host name */ 3249 if (a->w_host != NULL && b->w_host == NULL) 3250 return 1; 3251 else if (a->w_host == NULL && b->w_host != NULL) 3252 return -1; 3253 if (a->w_host != NULL && b->w_host != NULL && 3254 (i = sm_strcasecmp(a->w_host, b->w_host)) != 0) 3255 return i; 3256 3257 /* lock status */ 3258 if (a->w_lock != b->w_lock) 3259 return b->w_lock - a->w_lock; 3260 3261 /* job priority */ 3262 return workcmpf0(a, b); 3263} 3264/* 3265** WORKCMPF2 -- second compare function for ordering work based on host name. 3266** 3267** Sorts on lock status, host name, and priority in that order. 3268** 3269** Parameters: 3270** a -- the first argument. 3271** b -- the second argument. 3272** 3273** Returns: 3274** <0 if a < b 3275** 0 if a == b 3276** >0 if a > b 3277** 3278*/ 3279 3280static int 3281workcmpf2(a, b) 3282 register WORK *a; 3283 register WORK *b; 3284{ 3285 int i; 3286 3287 /* lock status */ 3288 if (a->w_lock != b->w_lock) 3289 return a->w_lock - b->w_lock; 3290 3291 /* host name */ 3292 if (a->w_host != NULL && b->w_host == NULL) 3293 return 1; 3294 else if (a->w_host == NULL && b->w_host != NULL) 3295 return -1; 3296 if (a->w_host != NULL && b->w_host != NULL && 3297 (i = sm_strcasecmp(a->w_host, b->w_host)) != 0) 3298 return i; 3299 3300 /* job priority */ 3301 return workcmpf0(a, b); 3302} 3303/* 3304** WORKCMPF3 -- simple submission-time-only compare function. 3305** 3306** Parameters: 3307** a -- the first argument. 3308** b -- the second argument. 3309** 3310** Returns: 3311** -1 if a < b 3312** 0 if a == b 3313** +1 if a > b 3314** 3315*/ 3316 3317static int 3318workcmpf3(a, b) 3319 register WORK *a; 3320 register WORK *b; 3321{ 3322 if (a->w_ctime > b->w_ctime) 3323 return 1; 3324 else if (a->w_ctime < b->w_ctime) 3325 return -1; 3326 else 3327 return 0; 3328} 3329/* 3330** WORKCMPF4 -- compare based on file name 3331** 3332** Parameters: 3333** a -- the first argument. 3334** b -- the second argument. 3335** 3336** Returns: 3337** -1 if a < b 3338** 0 if a == b 3339** +1 if a > b 3340** 3341*/ 3342 3343static int 3344workcmpf4(a, b) 3345 register WORK *a; 3346 register WORK *b; 3347{ 3348 return strcmp(a->w_name, b->w_name); 3349} 3350/* 3351** WORKCMPF5 -- compare based on assigned random number 3352** 3353** Parameters: 3354** a -- the first argument. 3355** b -- the second argument. 3356** 3357** Returns: 3358** randomly 1/-1 3359*/ 3360 3361/* ARGSUSED0 */ 3362static int 3363workcmpf5(a, b) 3364 register WORK *a; 3365 register WORK *b; 3366{ 3367 if (strlen(a->w_name) < randi || strlen(b->w_name) < randi) 3368 return -1; 3369 return a->w_name[randi] - b->w_name[randi]; 3370} 3371/* 3372** WORKCMPF6 -- simple modification-time-only compare function. 3373** 3374** Parameters: 3375** a -- the first argument. 3376** b -- the second argument. 3377** 3378** Returns: 3379** -1 if a < b 3380** 0 if a == b 3381** +1 if a > b 3382** 3383*/ 3384 3385static int 3386workcmpf6(a, b) 3387 register WORK *a; 3388 register WORK *b; 3389{ 3390 if (a->w_mtime > b->w_mtime) 3391 return 1; 3392 else if (a->w_mtime < b->w_mtime) 3393 return -1; 3394 else 3395 return 0; 3396} 3397#if _FFR_RHS 3398/* 3399** WORKCMPF7 -- compare function for ordering work based on shuffled host name. 3400** 3401** Sorts on lock status, host name, and priority in that order. 3402** 3403** Parameters: 3404** a -- the first argument. 3405** b -- the second argument. 3406** 3407** Returns: 3408** <0 if a < b 3409** 0 if a == b 3410** >0 if a > b 3411** 3412*/ 3413 3414static int 3415workcmpf7(a, b) 3416 register WORK *a; 3417 register WORK *b; 3418{ 3419 int i; 3420 3421 /* lock status */ 3422 if (a->w_lock != b->w_lock) 3423 return a->w_lock - b->w_lock; 3424 3425 /* host name */ 3426 if (a->w_host != NULL && b->w_host == NULL) 3427 return 1; 3428 else if (a->w_host == NULL && b->w_host != NULL) 3429 return -1; 3430 if (a->w_host != NULL && b->w_host != NULL && 3431 (i = sm_strshufflecmp(a->w_host, b->w_host)) != 0) 3432 return i; 3433 3434 /* job priority */ 3435 return workcmpf0(a, b); 3436} 3437#endif /* _FFR_RHS */ 3438/* 3439** STRREV -- reverse string 3440** 3441** Returns a pointer to a new string that is the reverse of 3442** the string pointed to by fwd. The space for the new 3443** string is obtained using xalloc(). 3444** 3445** Parameters: 3446** fwd -- the string to reverse. 3447** 3448** Returns: 3449** the reversed string. 3450*/ 3451 3452static char * 3453strrev(fwd) 3454 char *fwd; 3455{ 3456 char *rev = NULL; 3457 int len, cnt; 3458 3459 len = strlen(fwd); 3460 rev = xalloc(len + 1); 3461 for (cnt = 0; cnt < len; ++cnt) 3462 rev[cnt] = fwd[len - cnt - 1]; 3463 rev[len] = '\0'; 3464 return rev; 3465} 3466 3467#if _FFR_RHS 3468 3469# define NASCII 128 3470# define NCHAR 256 3471 3472static unsigned char ShuffledAlphabet[NCHAR]; 3473 3474void 3475init_shuffle_alphabet() 3476{ 3477 static bool init = false; 3478 int i; 3479 3480 if (init) 3481 return; 3482 3483 /* fill the ShuffledAlphabet */ 3484 for (i = 0; i < NASCII; i++) 3485 ShuffledAlphabet[i] = i; 3486 3487 /* mix it */ 3488 for (i = 1; i < NASCII; i++) 3489 { 3490 register int j = get_random() % NASCII; 3491 register int tmp; 3492 3493 tmp = ShuffledAlphabet[j]; 3494 ShuffledAlphabet[j] = ShuffledAlphabet[i]; 3495 ShuffledAlphabet[i] = tmp; 3496 } 3497 3498 /* make it case insensitive */ 3499 for (i = 'A'; i <= 'Z'; i++) 3500 ShuffledAlphabet[i] = ShuffledAlphabet[i + 'a' - 'A']; 3501 3502 /* fill the upper part */ 3503 for (i = 0; i < NASCII; i++) 3504 ShuffledAlphabet[i + NASCII] = ShuffledAlphabet[i]; 3505 init = true; 3506} 3507 3508static int 3509sm_strshufflecmp(a, b) 3510 char *a; 3511 char *b; 3512{ 3513 const unsigned char *us1 = (const unsigned char *) a; 3514 const unsigned char *us2 = (const unsigned char *) b; 3515 3516 while (ShuffledAlphabet[*us1] == ShuffledAlphabet[*us2++]) 3517 { 3518 if (*us1++ == '\0') 3519 return 0; 3520 } 3521 return (ShuffledAlphabet[*us1] - ShuffledAlphabet[*--us2]); 3522} 3523#endif /* _FFR_RHS */ 3524 3525/* 3526** DOWORK -- do a work request. 3527** 3528** Parameters: 3529** qgrp -- the index of the queue group for the job. 3530** qdir -- the index of the queue directory for the job. 3531** id -- the ID of the job to run. 3532** forkflag -- if set, run this in background. 3533** requeueflag -- if set, reinstantiate the queue quickly. 3534** This is used when expanding aliases in the queue. 3535** If forkflag is also set, it doesn't wait for the 3536** child. 3537** e - the envelope in which to run it. 3538** 3539** Returns: 3540** process id of process that is running the queue job. 3541** 3542** Side Effects: 3543** The work request is satisfied if possible. 3544*/ 3545 3546pid_t 3547dowork(qgrp, qdir, id, forkflag, requeueflag, e) 3548 int qgrp; 3549 int qdir; 3550 char *id; 3551 bool forkflag; 3552 bool requeueflag; 3553 register ENVELOPE *e; 3554{ 3555 register pid_t pid; 3556 SM_RPOOL_T *rpool; 3557 3558 if (tTd(40, 1)) 3559 sm_dprintf("dowork(%s/%s)\n", qid_printqueue(qgrp, qdir), id); 3560 3561 /* 3562 ** Fork for work. 3563 */ 3564 3565 if (forkflag) 3566 { 3567 /* 3568 ** Since the delivery may happen in a child and the 3569 ** parent does not wait, the parent may close the 3570 ** maps thereby removing any shared memory used by 3571 ** the map. Therefore, close the maps now so the 3572 ** child will dynamically open them if necessary. 3573 */ 3574 3575 closemaps(false); 3576 3577 pid = fork(); 3578 if (pid < 0) 3579 { 3580 syserr("dowork: cannot fork"); 3581 return 0; 3582 } 3583 else if (pid > 0) 3584 { 3585 /* parent -- clean out connection cache */ 3586 mci_flush(false, NULL); 3587 } 3588 else 3589 { 3590 /* 3591 ** Initialize exception stack and default exception 3592 ** handler for child process. 3593 */ 3594 3595 /* Reset global flags */ 3596 RestartRequest = NULL; 3597 RestartWorkGroup = false; 3598 ShutdownRequest = NULL; 3599 PendingSignal = 0; 3600 CurrentPid = getpid(); 3601 sm_exc_newthread(fatal_error); 3602 3603 /* 3604 ** See note above about SMTP processes and SIGCHLD. 3605 */ 3606 3607 if (OpMode == MD_SMTP || 3608 OpMode == MD_DAEMON || 3609 MaxQueueChildren > 0) 3610 { 3611 proc_list_clear(); 3612 sm_releasesignal(SIGCHLD); 3613 (void) sm_signal(SIGCHLD, SIG_DFL); 3614 } 3615 3616 /* child -- error messages to the transcript */ 3617 QuickAbort = OnlyOneError = false; 3618 } 3619 } 3620 else 3621 { 3622 pid = 0; 3623 } 3624 3625 if (pid == 0) 3626 { 3627 /* 3628 ** CHILD 3629 ** Lock the control file to avoid duplicate deliveries. 3630 ** Then run the file as though we had just read it. 3631 ** We save an idea of the temporary name so we 3632 ** can recover on interrupt. 3633 */ 3634 3635 if (forkflag) 3636 { 3637 /* Reset global flags */ 3638 RestartRequest = NULL; 3639 RestartWorkGroup = false; 3640 ShutdownRequest = NULL; 3641 PendingSignal = 0; 3642 } 3643 3644 /* set basic modes, etc. */ 3645 sm_clear_events(); 3646 clearstats(); 3647 rpool = sm_rpool_new_x(NULL); 3648 clearenvelope(e, false, rpool); 3649 e->e_flags |= EF_QUEUERUN|EF_GLOBALERRS; 3650 set_delivery_mode(SM_DELIVER, e); 3651 e->e_errormode = EM_MAIL; 3652 e->e_id = id; 3653 e->e_qgrp = qgrp; 3654 e->e_qdir = qdir; 3655 GrabTo = UseErrorsTo = false; 3656 ExitStat = EX_OK; 3657 if (forkflag) 3658 { 3659 disconnect(1, e); 3660 set_op_mode(MD_QUEUERUN); 3661 } 3662 sm_setproctitle(true, e, "%s from queue", qid_printname(e)); 3663 if (LogLevel > 76) 3664 sm_syslog(LOG_DEBUG, e->e_id, "dowork, pid=%d", 3665 (int) CurrentPid); 3666 3667 /* don't use the headers from sendmail.cf... */ 3668 e->e_header = NULL; 3669 3670 /* read the queue control file -- return if locked */ 3671 if (!readqf(e, false)) 3672 { 3673 if (tTd(40, 4) && e->e_id != NULL) 3674 sm_dprintf("readqf(%s) failed\n", 3675 qid_printname(e)); 3676 e->e_id = NULL; 3677 if (forkflag) 3678 finis(false, true, EX_OK); 3679 else 3680 { 3681 /* adding this frees 8 bytes */ 3682 clearenvelope(e, false, rpool); 3683 3684 /* adding this frees 12 bytes */ 3685 sm_rpool_free(rpool); 3686 e->e_rpool = NULL; 3687 return 0; 3688 } 3689 } 3690 3691 e->e_flags |= EF_INQUEUE; 3692 eatheader(e, requeueflag, true); 3693 3694 if (requeueflag) 3695 queueup(e, false, false); 3696 3697 /* do the delivery */ 3698 sendall(e, SM_DELIVER); 3699 3700 /* finish up and exit */ 3701 if (forkflag) 3702 finis(true, true, ExitStat); 3703 else 3704 { 3705 (void) dropenvelope(e, true, false); 3706 sm_rpool_free(rpool); 3707 e->e_rpool = NULL; 3708 } 3709 } 3710 e->e_id = NULL; 3711 return pid; 3712} 3713 3714/* 3715** DOWORKLIST -- process a list of envelopes as work requests 3716** 3717** Similar to dowork(), except that after forking, it processes an 3718** envelope and its siblings, treating each envelope as a work request. 3719** 3720** Parameters: 3721** el -- envelope to be processed including its siblings. 3722** forkflag -- if set, run this in background. 3723** requeueflag -- if set, reinstantiate the queue quickly. 3724** This is used when expanding aliases in the queue. 3725** If forkflag is also set, it doesn't wait for the 3726** child. 3727** 3728** Returns: 3729** process id of process that is running the queue job. 3730** 3731** Side Effects: 3732** The work request is satisfied if possible. 3733*/ 3734 3735pid_t 3736doworklist(el, forkflag, requeueflag) 3737 ENVELOPE *el; 3738 bool forkflag; 3739 bool requeueflag; 3740{ 3741 register pid_t pid; 3742 ENVELOPE *ei; 3743 3744 if (tTd(40, 1)) 3745 sm_dprintf("doworklist()\n"); 3746 3747 /* 3748 ** Fork for work. 3749 */ 3750 3751 if (forkflag) 3752 { 3753 /* 3754 ** Since the delivery may happen in a child and the 3755 ** parent does not wait, the parent may close the 3756 ** maps thereby removing any shared memory used by 3757 ** the map. Therefore, close the maps now so the 3758 ** child will dynamically open them if necessary. 3759 */ 3760 3761 closemaps(false); 3762 3763 pid = fork(); 3764 if (pid < 0) 3765 { 3766 syserr("doworklist: cannot fork"); 3767 return 0; 3768 } 3769 else if (pid > 0) 3770 { 3771 /* parent -- clean out connection cache */ 3772 mci_flush(false, NULL); 3773 } 3774 else 3775 { 3776 /* 3777 ** Initialize exception stack and default exception 3778 ** handler for child process. 3779 */ 3780 3781 /* Reset global flags */ 3782 RestartRequest = NULL; 3783 RestartWorkGroup = false; 3784 ShutdownRequest = NULL; 3785 PendingSignal = 0; 3786 CurrentPid = getpid(); 3787 sm_exc_newthread(fatal_error); 3788 3789 /* 3790 ** See note above about SMTP processes and SIGCHLD. 3791 */ 3792 3793 if (OpMode == MD_SMTP || 3794 OpMode == MD_DAEMON || 3795 MaxQueueChildren > 0) 3796 { 3797 proc_list_clear(); 3798 sm_releasesignal(SIGCHLD); 3799 (void) sm_signal(SIGCHLD, SIG_DFL); 3800 } 3801 3802 /* child -- error messages to the transcript */ 3803 QuickAbort = OnlyOneError = false; 3804 } 3805 } 3806 else 3807 { 3808 pid = 0; 3809 } 3810 3811 if (pid != 0) 3812 return pid; 3813 3814 /* 3815 ** IN CHILD 3816 ** Lock the control file to avoid duplicate deliveries. 3817 ** Then run the file as though we had just read it. 3818 ** We save an idea of the temporary name so we 3819 ** can recover on interrupt. 3820 */ 3821 3822 if (forkflag) 3823 { 3824 /* Reset global flags */ 3825 RestartRequest = NULL; 3826 RestartWorkGroup = false; 3827 ShutdownRequest = NULL; 3828 PendingSignal = 0; 3829 } 3830 3831 /* set basic modes, etc. */ 3832 sm_clear_events(); 3833 clearstats(); 3834 GrabTo = UseErrorsTo = false; 3835 ExitStat = EX_OK; 3836 if (forkflag) 3837 { 3838 disconnect(1, el); 3839 set_op_mode(MD_QUEUERUN); 3840 } 3841 if (LogLevel > 76) 3842 sm_syslog(LOG_DEBUG, el->e_id, "doworklist, pid=%d", 3843 (int) CurrentPid); 3844 3845 for (ei = el; ei != NULL; ei = ei->e_sibling) 3846 { 3847 ENVELOPE e; 3848 SM_RPOOL_T *rpool; 3849 3850 if (WILL_BE_QUEUED(ei->e_sendmode)) 3851 continue; 3852 else if (QueueMode != QM_QUARANTINE && 3853 ei->e_quarmsg != NULL) 3854 continue; 3855 3856 rpool = sm_rpool_new_x(NULL); 3857 clearenvelope(&e, true, rpool); 3858 e.e_flags |= EF_QUEUERUN|EF_GLOBALERRS; 3859 set_delivery_mode(SM_DELIVER, &e); 3860 e.e_errormode = EM_MAIL; 3861 e.e_id = ei->e_id; 3862 e.e_qgrp = ei->e_qgrp; 3863 e.e_qdir = ei->e_qdir; 3864 openxscript(&e); 3865 sm_setproctitle(true, &e, "%s from queue", qid_printname(&e)); 3866 3867 /* don't use the headers from sendmail.cf... */ 3868 e.e_header = NULL; 3869 CurEnv = &e; 3870 3871 /* read the queue control file -- return if locked */ 3872 if (readqf(&e, false)) 3873 { 3874 e.e_flags |= EF_INQUEUE; 3875 eatheader(&e, requeueflag, true); 3876 3877 if (requeueflag) 3878 queueup(&e, false, false); 3879 3880 /* do the delivery */ 3881 sendall(&e, SM_DELIVER); 3882 (void) dropenvelope(&e, true, false); 3883 } 3884 else 3885 { 3886 if (tTd(40, 4) && e.e_id != NULL) 3887 sm_dprintf("readqf(%s) failed\n", 3888 qid_printname(&e)); 3889 } 3890 sm_rpool_free(rpool); 3891 ei->e_id = NULL; 3892 } 3893 3894 /* restore CurEnv */ 3895 CurEnv = el; 3896 3897 /* finish up and exit */ 3898 if (forkflag) 3899 finis(true, true, ExitStat); 3900 return 0; 3901} 3902/* 3903** READQF -- read queue file and set up environment. 3904** 3905** Parameters: 3906** e -- the envelope of the job to run. 3907** openonly -- only open the qf (returned as e_lockfp) 3908** 3909** Returns: 3910** true if it successfully read the queue file. 3911** false otherwise. 3912** 3913** Side Effects: 3914** The queue file is returned locked. 3915*/ 3916 3917static bool 3918readqf(e, openonly) 3919 register ENVELOPE *e; 3920 bool openonly; 3921{ 3922 register SM_FILE_T *qfp; 3923 ADDRESS *ctladdr; 3924 struct stat st, stf; 3925 char *bp; 3926 int qfver = 0; 3927 long hdrsize = 0; 3928 register char *p; 3929 char *frcpt = NULL; 3930 char *orcpt = NULL; 3931 bool nomore = false; 3932 bool bogus = false; 3933 MODE_T qsafe; 3934 char *err; 3935 char qf[MAXPATHLEN]; 3936 char buf[MAXLINE]; 3937 int bufsize; 3938 3939 /* 3940 ** Read and process the file. 3941 */ 3942 3943 SM_REQUIRE(e != NULL); 3944 bp = NULL; 3945 (void) sm_strlcpy(qf, queuename(e, ANYQFL_LETTER), sizeof(qf)); 3946 qfp = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, qf, SM_IO_RDWR_B, NULL); 3947 if (qfp == NULL) 3948 { 3949 int save_errno = errno; 3950 3951 if (tTd(40, 8)) 3952 sm_dprintf("readqf(%s): sm_io_open failure (%s)\n", 3953 qf, sm_errstring(errno)); 3954 errno = save_errno; 3955 if (errno != ENOENT 3956 ) 3957 syserr("readqf: no control file %s", qf); 3958 RELEASE_QUEUE; 3959 return false; 3960 } 3961 3962 if (!lockfile(sm_io_getinfo(qfp, SM_IO_WHAT_FD, NULL), qf, NULL, 3963 LOCK_EX|LOCK_NB)) 3964 { 3965 /* being processed by another queuer */ 3966 if (Verbose) 3967 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3968 "%s: locked\n", e->e_id); 3969 if (tTd(40, 8)) 3970 sm_dprintf("%s: locked\n", e->e_id); 3971 if (LogLevel > 19) 3972 sm_syslog(LOG_DEBUG, e->e_id, "locked"); 3973 (void) sm_io_close(qfp, SM_TIME_DEFAULT); 3974 RELEASE_QUEUE; 3975 return false; 3976 } 3977 3978 RELEASE_QUEUE; 3979 3980 /* 3981 ** Prevent locking race condition. 3982 ** 3983 ** Process A: readqf(): qfp = fopen(qffile) 3984 ** Process B: queueup(): rename(tf, qf) 3985 ** Process B: unlocks(tf) 3986 ** Process A: lockfile(qf); 3987 ** 3988 ** Process A (us) has the old qf file (before the rename deleted 3989 ** the directory entry) and will be delivering based on old data. 3990 ** This can lead to multiple deliveries of the same recipients. 3991 ** 3992 ** Catch this by checking if the underlying qf file has changed 3993 ** *after* acquiring our lock and if so, act as though the file 3994 ** was still locked (i.e., just return like the lockfile() case 3995 ** above. 3996 */ 3997 3998 if (stat(qf, &stf) < 0 || 3999 fstat(sm_io_getinfo(qfp, SM_IO_WHAT_FD, NULL), &st) < 0) 4000 { 4001 /* must have been being processed by someone else */ 4002 if (tTd(40, 8)) 4003 sm_dprintf("readqf(%s): [f]stat failure (%s)\n", 4004 qf, sm_errstring(errno)); 4005 (void) sm_io_close(qfp, SM_TIME_DEFAULT); 4006 return false; 4007 } 4008 4009 if (st.st_nlink != stf.st_nlink || 4010 st.st_dev != stf.st_dev || 4011 ST_INODE(st) != ST_INODE(stf) || 4012#if HAS_ST_GEN && 0 /* AFS returns garbage in st_gen */ 4013 st.st_gen != stf.st_gen || 4014#endif /* HAS_ST_GEN && 0 */ 4015 st.st_uid != stf.st_uid || 4016 st.st_gid != stf.st_gid || 4017 st.st_size != stf.st_size) 4018 { 4019 /* changed after opened */ 4020 if (Verbose) 4021 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4022 "%s: changed\n", e->e_id); 4023 if (tTd(40, 8)) 4024 sm_dprintf("%s: changed\n", e->e_id); 4025 if (LogLevel > 19) 4026 sm_syslog(LOG_DEBUG, e->e_id, "changed"); 4027 (void) sm_io_close(qfp, SM_TIME_DEFAULT); 4028 return false; 4029 } 4030 4031 /* 4032 ** Check the queue file for plausibility to avoid attacks. 4033 */ 4034 4035 qsafe = S_IWOTH|S_IWGRP; 4036 if (bitset(S_IWGRP, QueueFileMode)) 4037 qsafe &= ~S_IWGRP; 4038 4039 bogus = st.st_uid != geteuid() && 4040 st.st_uid != TrustedUid && 4041 geteuid() != RealUid; 4042 4043 /* 4044 ** If this qf file results from a set-group-ID binary, then 4045 ** we check whether the directory is group-writable, 4046 ** the queue file mode contains the group-writable bit, and 4047 ** the groups are the same. 4048 ** Notice: this requires that the set-group-ID binary is used to 4049 ** run the queue! 4050 */ 4051 4052 if (bogus && st.st_gid == getegid() && UseMSP) 4053 { 4054 char delim; 4055 struct stat dst; 4056 4057 bp = SM_LAST_DIR_DELIM(qf); 4058 if (bp == NULL) 4059 delim = '\0'; 4060 else 4061 { 4062 delim = *bp; 4063 *bp = '\0'; 4064 } 4065 if (stat(delim == '\0' ? "." : qf, &dst) < 0) 4066 syserr("readqf: cannot stat directory %s", 4067 delim == '\0' ? "." : qf); 4068 else 4069 { 4070 bogus = !(bitset(S_IWGRP, QueueFileMode) && 4071 bitset(S_IWGRP, dst.st_mode) && 4072 dst.st_gid == st.st_gid); 4073 } 4074 if (delim != '\0') 4075 *bp = delim; 4076 bp = NULL; 4077 } 4078 if (!bogus) 4079 bogus = bitset(qsafe, st.st_mode); 4080 if (bogus) 4081 { 4082 if (LogLevel > 0) 4083 { 4084 sm_syslog(LOG_ALERT, e->e_id, 4085 "bogus queue file, uid=%d, gid=%d, mode=%o", 4086 st.st_uid, st.st_gid, st.st_mode); 4087 } 4088 if (tTd(40, 8)) 4089 sm_dprintf("readqf(%s): bogus file\n", qf); 4090 e->e_flags |= EF_INQUEUE; 4091 if (!openonly) 4092 loseqfile(e, "bogus file uid/gid in mqueue"); 4093 (void) sm_io_close(qfp, SM_TIME_DEFAULT); 4094 return false; 4095 } 4096 4097 if (st.st_size == 0) 4098 { 4099 /* must be a bogus file -- if also old, just remove it */ 4100 if (!openonly && st.st_ctime + 10 * 60 < curtime()) 4101 { 4102 (void) xunlink(queuename(e, DATAFL_LETTER)); 4103 (void) xunlink(queuename(e, ANYQFL_LETTER)); 4104 } 4105 (void) sm_io_close(qfp, SM_TIME_DEFAULT); 4106 return false; 4107 } 4108 4109 if (st.st_nlink == 0) 4110 { 4111 /* 4112 ** Race condition -- we got a file just as it was being 4113 ** unlinked. Just assume it is zero length. 4114 */ 4115 4116 (void) sm_io_close(qfp, SM_TIME_DEFAULT); 4117 return false; 4118 } 4119 4120#if _FFR_TRUSTED_QF 4121 /* 4122 ** If we don't own the file mark it as unsafe. 4123 ** However, allow TrustedUser to own it as well 4124 ** in case TrustedUser manipulates the queue. 4125 */ 4126 4127 if (st.st_uid != geteuid() && st.st_uid != TrustedUid) 4128 e->e_flags |= EF_UNSAFE; 4129#else /* _FFR_TRUSTED_QF */ 4130 /* If we don't own the file mark it as unsafe */ 4131 if (st.st_uid != geteuid()) 4132 e->e_flags |= EF_UNSAFE; 4133#endif /* _FFR_TRUSTED_QF */ 4134 4135 /* good file -- save this lock */ 4136 e->e_lockfp = qfp; 4137 4138 /* Just wanted the open file */ 4139 if (openonly) 4140 return true; 4141 4142 /* do basic system initialization */ 4143 initsys(e); 4144 macdefine(&e->e_macro, A_PERM, 'i', e->e_id); 4145 4146 LineNumber = 0; 4147 e->e_flags |= EF_GLOBALERRS; 4148 set_op_mode(MD_QUEUERUN); 4149 ctladdr = NULL; 4150 e->e_qfletter = queue_letter(e, ANYQFL_LETTER); 4151 e->e_dfqgrp = e->e_qgrp; 4152 e->e_dfqdir = e->e_qdir; 4153#if _FFR_QUEUE_MACRO 4154 macdefine(&e->e_macro, A_TEMP, macid("{queue}"), 4155 qid_printqueue(e->e_qgrp, e->e_qdir)); 4156#endif /* _FFR_QUEUE_MACRO */ 4157 e->e_dfino = -1; 4158 e->e_msgsize = -1; 4159 while (bufsize = sizeof(buf), 4160 (bp = fgetfolded(buf, &bufsize, qfp)) != NULL) 4161 { 4162 unsigned long qflags; 4163 ADDRESS *q; 4164 int r; 4165 time_t now; 4166 auto char *ep; 4167 4168 if (tTd(40, 4)) 4169 sm_dprintf("+++++ %s\n", bp); 4170 if (nomore) 4171 { 4172 /* hack attack */ 4173 hackattack: 4174 syserr("SECURITY ALERT: extra or bogus data in queue file: %s", 4175 bp); 4176 err = "bogus queue line"; 4177 goto fail; 4178 } 4179 switch (bp[0]) 4180 { 4181 case 'A': /* AUTH= parameter */ 4182 if (!xtextok(&bp[1])) 4183 goto hackattack; 4184 e->e_auth_param = sm_rpool_strdup_x(e->e_rpool, &bp[1]); 4185 break; 4186 4187 case 'B': /* body type */ 4188 r = check_bodytype(&bp[1]); 4189 if (!BODYTYPE_VALID(r)) 4190 goto hackattack; 4191 e->e_bodytype = sm_rpool_strdup_x(e->e_rpool, &bp[1]); 4192 break; 4193 4194 case 'C': /* specify controlling user */ 4195 ctladdr = setctluser(&bp[1], qfver, e); 4196 break; 4197 4198 case 'D': /* data file name */ 4199 /* obsolete -- ignore */ 4200 break; 4201 4202 case 'd': /* data file directory name */ 4203 { 4204 int qgrp, qdir; 4205 4206#if _FFR_MSP_PARANOIA 4207 /* forbid queue groups in MSP? */ 4208 if (UseMSP) 4209 goto hackattack; 4210#endif /* _FFR_MSP_PARANOIA */ 4211 for (qgrp = 0; 4212 qgrp < NumQueue && Queue[qgrp] != NULL; 4213 ++qgrp) 4214 { 4215 for (qdir = 0; 4216 qdir < Queue[qgrp]->qg_numqueues; 4217 ++qdir) 4218 { 4219 if (strcmp(&bp[1], 4220 Queue[qgrp]->qg_qpaths[qdir].qp_name) 4221 == 0) 4222 { 4223 e->e_dfqgrp = qgrp; 4224 e->e_dfqdir = qdir; 4225 goto done; 4226 } 4227 } 4228 } 4229 err = "bogus queue file directory"; 4230 goto fail; 4231 done: 4232 break; 4233 } 4234 4235 case 'E': /* specify error recipient */ 4236 /* no longer used */ 4237 break; 4238 4239 case 'F': /* flag bits */ 4240 if (strncmp(bp, "From ", 5) == 0) 4241 { 4242 /* we are being spoofed! */ 4243 syserr("SECURITY ALERT: bogus qf line %s", bp); 4244 err = "bogus queue line"; 4245 goto fail; 4246 } 4247 for (p = &bp[1]; *p != '\0'; p++) 4248 { 4249 switch (*p) 4250 { 4251 case '8': /* has 8 bit data */ 4252 e->e_flags |= EF_HAS8BIT; 4253 break; 4254 4255 case 'b': /* delete Bcc: header */ 4256 e->e_flags |= EF_DELETE_BCC; 4257 break; 4258 4259 case 'd': /* envelope has DSN RET= */ 4260 e->e_flags |= EF_RET_PARAM; 4261 break; 4262 4263 case 'n': /* don't return body */ 4264 e->e_flags |= EF_NO_BODY_RETN; 4265 break; 4266 4267 case 'r': /* response */ 4268 e->e_flags |= EF_RESPONSE; 4269 break; 4270 4271 case 's': /* split */ 4272 e->e_flags |= EF_SPLIT; 4273 break; 4274 4275 case 'w': /* warning sent */ 4276 e->e_flags |= EF_WARNING; 4277 break; 4278 } 4279 } 4280 break; 4281 4282 case 'q': /* quarantine reason */ 4283 e->e_quarmsg = sm_rpool_strdup_x(e->e_rpool, &bp[1]); 4284 macdefine(&e->e_macro, A_PERM, 4285 macid("{quarantine}"), e->e_quarmsg); 4286 break; 4287 4288 case 'H': /* header */ 4289 4290 /* 4291 ** count size before chompheader() destroys the line. 4292 ** this isn't accurate due to macro expansion, but 4293 ** better than before. "-3" to skip H?? at least. 4294 */ 4295 4296 hdrsize += strlen(bp) - 3; 4297 (void) chompheader(&bp[1], CHHDR_QUEUE, NULL, e); 4298 break; 4299 4300 case 'I': /* data file's inode number */ 4301 /* regenerated below */ 4302 break; 4303 4304 case 'K': /* time of last delivery attempt */ 4305 e->e_dtime = atol(&buf[1]); 4306 break; 4307 4308 case 'L': /* Solaris Content-Length: */ 4309 case 'M': /* message */ 4310 /* ignore this; we want a new message next time */ 4311 break; 4312 4313 case 'N': /* number of delivery attempts */ 4314 e->e_ntries = atoi(&buf[1]); 4315 4316 /* if this has been tried recently, let it be */ 4317 now = curtime(); 4318 if (e->e_ntries > 0 && e->e_dtime <= now && 4319 now < e->e_dtime + MinQueueAge) 4320 { 4321 char *howlong; 4322 4323 howlong = pintvl(now - e->e_dtime, true); 4324 if (Verbose) 4325 (void) sm_io_fprintf(smioout, 4326 SM_TIME_DEFAULT, 4327 "%s: too young (%s)\n", 4328 e->e_id, howlong); 4329 if (tTd(40, 8)) 4330 sm_dprintf("%s: too young (%s)\n", 4331 e->e_id, howlong); 4332 if (LogLevel > 19) 4333 sm_syslog(LOG_DEBUG, e->e_id, 4334 "too young (%s)", 4335 howlong); 4336 e->e_id = NULL; 4337 unlockqueue(e); 4338 if (bp != buf) 4339 sm_free(bp); 4340 return false; 4341 } 4342 macdefine(&e->e_macro, A_TEMP, 4343 macid("{ntries}"), &buf[1]); 4344 4345#if NAMED_BIND 4346 /* adjust BIND parameters immediately */ 4347 if (e->e_ntries == 0) 4348 { 4349 _res.retry = TimeOuts.res_retry[RES_TO_FIRST]; 4350 _res.retrans = TimeOuts.res_retrans[RES_TO_FIRST]; 4351 } 4352 else 4353 { 4354 _res.retry = TimeOuts.res_retry[RES_TO_NORMAL]; 4355 _res.retrans = TimeOuts.res_retrans[RES_TO_NORMAL]; 4356 } 4357#endif /* NAMED_BIND */ 4358 break; 4359 4360 case 'P': /* message priority */ 4361 e->e_msgpriority = atol(&bp[1]) + WkTimeFact; 4362 break; 4363 4364 case 'Q': /* original recipient */ 4365 orcpt = sm_rpool_strdup_x(e->e_rpool, &bp[1]); 4366 break; 4367 4368 case 'r': /* final recipient */ 4369 frcpt = sm_rpool_strdup_x(e->e_rpool, &bp[1]); 4370 break; 4371 4372 case 'R': /* specify recipient */ 4373 p = bp; 4374 qflags = 0; 4375 if (qfver >= 1) 4376 { 4377 /* get flag bits */ 4378 while (*++p != '\0' && *p != ':') 4379 { 4380 switch (*p) 4381 { 4382 case 'N': 4383 qflags |= QHASNOTIFY; 4384 break; 4385 4386 case 'S': 4387 qflags |= QPINGONSUCCESS; 4388 break; 4389 4390 case 'F': 4391 qflags |= QPINGONFAILURE; 4392 break; 4393 4394 case 'D': 4395 qflags |= QPINGONDELAY; 4396 break; 4397 4398 case 'P': 4399 qflags |= QPRIMARY; 4400 break; 4401 4402 case 'A': 4403 if (ctladdr != NULL) 4404 ctladdr->q_flags |= QALIAS; 4405 break; 4406 4407 default: /* ignore or complain? */ 4408 break; 4409 } 4410 } 4411 } 4412 else 4413 qflags |= QPRIMARY; 4414 macdefine(&e->e_macro, A_PERM, macid("{addr_type}"), 4415 "e r"); 4416 if (*p != '\0') 4417 q = parseaddr(++p, NULLADDR, RF_COPYALL, '\0', 4418 NULL, e, true); 4419 else 4420 q = NULL; 4421 if (q != NULL) 4422 { 4423 /* make sure we keep the current qgrp */ 4424 if (ISVALIDQGRP(e->e_qgrp)) 4425 q->q_qgrp = e->e_qgrp; 4426 q->q_alias = ctladdr; 4427 if (qfver >= 1) 4428 q->q_flags &= ~Q_PINGFLAGS; 4429 q->q_flags |= qflags; 4430 q->q_finalrcpt = frcpt; 4431 q->q_orcpt = orcpt; 4432 (void) recipient(q, &e->e_sendqueue, 0, e); 4433 } 4434 frcpt = NULL; 4435 orcpt = NULL; 4436 macdefine(&e->e_macro, A_PERM, macid("{addr_type}"), 4437 NULL); 4438 break; 4439 4440 case 'S': /* sender */ 4441 setsender(sm_rpool_strdup_x(e->e_rpool, &bp[1]), 4442 e, NULL, '\0', true); 4443 break; 4444 4445 case 'T': /* init time */ 4446 e->e_ctime = atol(&bp[1]); 4447 break; 4448 4449 case 'V': /* queue file version number */ 4450 qfver = atoi(&bp[1]); 4451 if (qfver <= QF_VERSION) 4452 break; 4453 syserr("Version number in queue file (%d) greater than max (%d)", 4454 qfver, QF_VERSION); 4455 err = "unsupported queue file version"; 4456 goto fail; 4457 /* NOTREACHED */ 4458 break; 4459 4460 case 'Z': /* original envelope id from ESMTP */ 4461 e->e_envid = sm_rpool_strdup_x(e->e_rpool, &bp[1]); 4462 macdefine(&e->e_macro, A_PERM, 4463 macid("{dsn_envid}"), e->e_envid); 4464 break; 4465 4466 case '!': /* deliver by */ 4467 4468 /* format: flag (1 char) space long-integer */ 4469 e->e_dlvr_flag = buf[1]; 4470 e->e_deliver_by = strtol(&buf[3], NULL, 10); 4471 4472 case '$': /* define macro */ 4473 { 4474 char *p; 4475 4476 /* XXX elimate p? */ 4477 r = macid_parse(&bp[1], &ep); 4478 if (r == 0) 4479 break; 4480 p = sm_rpool_strdup_x(e->e_rpool, ep); 4481 macdefine(&e->e_macro, A_PERM, r, p); 4482 } 4483 break; 4484 4485 case '.': /* terminate file */ 4486 nomore = true; 4487 break; 4488 4489#if _FFR_QUEUEDELAY 4490 case 'G': 4491 case 'Y': 4492 4493 /* 4494 ** Maintain backward compatibility for 4495 ** users who defined _FFR_QUEUEDELAY in 4496 ** previous releases. Remove this 4497 ** code in 8.14 or 8.15. 4498 */ 4499 4500 if (qfver == 5 || qfver == 7) 4501 break; 4502 4503 /* If not qfver 5 or 7, then 'G' or 'Y' is invalid */ 4504 /* FALLTHROUGH */ 4505#endif /* _FFR_QUEUEDELAY */ 4506 4507 default: 4508 syserr("readqf: %s: line %d: bad line \"%s\"", 4509 qf, LineNumber, shortenstring(bp, MAXSHORTSTR)); 4510 err = "unrecognized line"; 4511 goto fail; 4512 } 4513 4514 if (bp != buf) 4515 SM_FREE(bp); 4516 } 4517 4518 /* 4519 ** If we haven't read any lines, this queue file is empty. 4520 ** Arrange to remove it without referencing any null pointers. 4521 */ 4522 4523 if (LineNumber == 0) 4524 { 4525 errno = 0; 4526 e->e_flags |= EF_CLRQUEUE|EF_FATALERRS|EF_RESPONSE; 4527 return true; 4528 } 4529 4530 /* Check to make sure we have a complete queue file read */ 4531 if (!nomore) 4532 { 4533 syserr("readqf: %s: incomplete queue file read", qf); 4534 (void) sm_io_close(qfp, SM_TIME_DEFAULT); 4535 return false; 4536 } 4537 4538#if _FFR_QF_PARANOIA 4539 /* Check to make sure key fields were read */ 4540 if (e->e_from.q_mailer == NULL) 4541 { 4542 syserr("readqf: %s: sender not specified in queue file", qf); 4543 (void) sm_io_close(qfp, SM_TIME_DEFAULT); 4544 return false; 4545 } 4546 /* other checks? */ 4547#endif /* _FFR_QF_PARANOIA */ 4548 4549 /* possibly set ${dsn_ret} macro */ 4550 if (bitset(EF_RET_PARAM, e->e_flags)) 4551 { 4552 if (bitset(EF_NO_BODY_RETN, e->e_flags)) 4553 macdefine(&e->e_macro, A_PERM, 4554 macid("{dsn_ret}"), "hdrs"); 4555 else 4556 macdefine(&e->e_macro, A_PERM, 4557 macid("{dsn_ret}"), "full"); 4558 } 4559 4560 /* 4561 ** Arrange to read the data file. 4562 */ 4563 4564 p = queuename(e, DATAFL_LETTER); 4565 e->e_dfp = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, p, SM_IO_RDONLY_B, 4566 NULL); 4567 if (e->e_dfp == NULL) 4568 { 4569 syserr("readqf: cannot open %s", p); 4570 } 4571 else 4572 { 4573 e->e_flags |= EF_HAS_DF; 4574 if (fstat(sm_io_getinfo(e->e_dfp, SM_IO_WHAT_FD, NULL), &st) 4575 >= 0) 4576 { 4577 e->e_msgsize = st.st_size + hdrsize; 4578 e->e_dfdev = st.st_dev; 4579 e->e_dfino = ST_INODE(st); 4580 (void) sm_snprintf(buf, sizeof(buf), "%ld", 4581 e->e_msgsize); 4582 macdefine(&e->e_macro, A_TEMP, macid("{msg_size}"), 4583 buf); 4584 } 4585 } 4586 4587 return true; 4588 4589 fail: 4590 /* 4591 ** There was some error reading the qf file (reason is in err var.) 4592 ** Cleanup: 4593 ** close file; clear e_lockfp since it is the same as qfp, 4594 ** hence it is invalid (as file) after qfp is closed; 4595 ** the qf file is on disk, so set the flag to avoid calling 4596 ** queueup() with bogus data. 4597 */ 4598 4599 if (bp != buf) 4600 SM_FREE(bp); 4601 if (qfp != NULL) 4602 (void) sm_io_close(qfp, SM_TIME_DEFAULT); 4603 e->e_lockfp = NULL; 4604 e->e_flags |= EF_INQUEUE; 4605 loseqfile(e, err); 4606 return false; 4607} 4608/* 4609** PRTSTR -- print a string, "unprintable" characters are shown as \oct 4610** 4611** Parameters: 4612** s -- string to print 4613** ml -- maximum length of output 4614** 4615** Returns: 4616** number of entries 4617** 4618** Side Effects: 4619** Prints a string on stdout. 4620*/ 4621 4622static void prtstr __P((char *, int)); 4623 4624static void 4625prtstr(s, ml) 4626 char *s; 4627 int ml; 4628{ 4629 int c; 4630 4631 if (s == NULL) 4632 return; 4633 while (ml-- > 0 && ((c = *s++) != '\0')) 4634 { 4635 if (c == '\\') 4636 { 4637 if (ml-- > 0) 4638 { 4639 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, c); 4640 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, c); 4641 } 4642 } 4643 else if (isascii(c) && isprint(c)) 4644 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, c); 4645 else 4646 { 4647 if ((ml -= 3) > 0) 4648 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4649 "\\%03o", c & 0xFF); 4650 } 4651 } 4652} 4653/* 4654** PRINTNQE -- print out number of entries in the mail queue 4655** 4656** Parameters: 4657** out -- output file pointer. 4658** prefix -- string to output in front of each line. 4659** 4660** Returns: 4661** none. 4662*/ 4663 4664void 4665printnqe(out, prefix) 4666 SM_FILE_T *out; 4667 char *prefix; 4668{ 4669#if SM_CONF_SHM 4670 int i, k = 0, nrequests = 0; 4671 bool unknown = false; 4672 4673 if (ShmId == SM_SHM_NO_ID) 4674 { 4675 if (prefix == NULL) 4676 (void) sm_io_fprintf(out, SM_TIME_DEFAULT, 4677 "Data unavailable: shared memory not updated\n"); 4678 else 4679 (void) sm_io_fprintf(out, SM_TIME_DEFAULT, 4680 "%sNOTCONFIGURED:-1\r\n", prefix); 4681 return; 4682 } 4683 for (i = 0; i < NumQueue && Queue[i] != NULL; i++) 4684 { 4685 int j; 4686 4687 k++; 4688 for (j = 0; j < Queue[i]->qg_numqueues; j++) 4689 { 4690 int n; 4691 4692 if (StopRequest) 4693 stop_sendmail(); 4694 4695 n = QSHM_ENTRIES(Queue[i]->qg_qpaths[j].qp_idx); 4696 if (prefix != NULL) 4697 (void) sm_io_fprintf(out, SM_TIME_DEFAULT, 4698 "%s%s:%d\r\n", 4699 prefix, qid_printqueue(i, j), n); 4700 else if (n < 0) 4701 { 4702 (void) sm_io_fprintf(out, SM_TIME_DEFAULT, 4703 "%s: unknown number of entries\n", 4704 qid_printqueue(i, j)); 4705 unknown = true; 4706 } 4707 else if (n == 0) 4708 { 4709 (void) sm_io_fprintf(out, SM_TIME_DEFAULT, 4710 "%s is empty\n", 4711 qid_printqueue(i, j)); 4712 } 4713 else if (n > 0) 4714 { 4715 (void) sm_io_fprintf(out, SM_TIME_DEFAULT, 4716 "%s: entries=%d\n", 4717 qid_printqueue(i, j), n); 4718 nrequests += n; 4719 k++; 4720 } 4721 } 4722 } 4723 if (prefix == NULL && k > 1) 4724 (void) sm_io_fprintf(out, SM_TIME_DEFAULT, 4725 "\t\tTotal requests: %d%s\n", 4726 nrequests, unknown ? " (about)" : ""); 4727#else /* SM_CONF_SHM */ 4728 if (prefix == NULL) 4729 (void) sm_io_fprintf(out, SM_TIME_DEFAULT, 4730 "Data unavailable without shared memory support\n"); 4731 else 4732 (void) sm_io_fprintf(out, SM_TIME_DEFAULT, 4733 "%sNOTAVAILABLE:-1\r\n", prefix); 4734#endif /* SM_CONF_SHM */ 4735} 4736/* 4737** PRINTQUEUE -- print out a representation of the mail queue 4738** 4739** Parameters: 4740** none. 4741** 4742** Returns: 4743** none. 4744** 4745** Side Effects: 4746** Prints a listing of the mail queue on the standard output. 4747*/ 4748 4749void 4750printqueue() 4751{ 4752 int i, k = 0, nrequests = 0; 4753 4754 for (i = 0; i < NumQueue && Queue[i] != NULL; i++) 4755 { 4756 int j; 4757 4758 k++; 4759 for (j = 0; j < Queue[i]->qg_numqueues; j++) 4760 { 4761 if (StopRequest) 4762 stop_sendmail(); 4763 nrequests += print_single_queue(i, j); 4764 k++; 4765 } 4766 } 4767 if (k > 1) 4768 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4769 "\t\tTotal requests: %d\n", 4770 nrequests); 4771} 4772/* 4773** PRINT_SINGLE_QUEUE -- print out a representation of a single mail queue 4774** 4775** Parameters: 4776** qgrp -- the index of the queue group. 4777** qdir -- the queue directory. 4778** 4779** Returns: 4780** number of requests in mail queue. 4781** 4782** Side Effects: 4783** Prints a listing of the mail queue on the standard output. 4784*/ 4785 4786int 4787print_single_queue(qgrp, qdir) 4788 int qgrp; 4789 int qdir; 4790{ 4791 register WORK *w; 4792 SM_FILE_T *f; 4793 int nrequests; 4794 char qd[MAXPATHLEN]; 4795 char qddf[MAXPATHLEN]; 4796 char buf[MAXLINE]; 4797 4798 if (qdir == NOQDIR) 4799 { 4800 (void) sm_strlcpy(qd, ".", sizeof(qd)); 4801 (void) sm_strlcpy(qddf, ".", sizeof(qddf)); 4802 } 4803 else 4804 { 4805 (void) sm_strlcpyn(qd, sizeof(qd), 2, 4806 Queue[qgrp]->qg_qpaths[qdir].qp_name, 4807 (bitset(QP_SUBQF, 4808 Queue[qgrp]->qg_qpaths[qdir].qp_subdirs) 4809 ? "/qf" : "")); 4810 (void) sm_strlcpyn(qddf, sizeof(qddf), 2, 4811 Queue[qgrp]->qg_qpaths[qdir].qp_name, 4812 (bitset(QP_SUBDF, 4813 Queue[qgrp]->qg_qpaths[qdir].qp_subdirs) 4814 ? "/df" : "")); 4815 } 4816 4817 /* 4818 ** Check for permission to print the queue 4819 */ 4820 4821 if (bitset(PRIV_RESTRICTMAILQ, PrivacyFlags) && RealUid != 0) 4822 { 4823 struct stat st; 4824#ifdef NGROUPS_MAX 4825 int n; 4826 extern GIDSET_T InitialGidSet[NGROUPS_MAX]; 4827#endif /* NGROUPS_MAX */ 4828 4829 if (stat(qd, &st) < 0) 4830 { 4831 syserr("Cannot stat %s", 4832 qid_printqueue(qgrp, qdir)); 4833 return 0; 4834 } 4835#ifdef NGROUPS_MAX 4836 n = NGROUPS_MAX; 4837 while (--n >= 0) 4838 { 4839 if (InitialGidSet[n] == st.st_gid) 4840 break; 4841 } 4842 if (n < 0 && RealGid != st.st_gid) 4843#else /* NGROUPS_MAX */ 4844 if (RealGid != st.st_gid) 4845#endif /* NGROUPS_MAX */ 4846 { 4847 usrerr("510 You are not permitted to see the queue"); 4848 setstat(EX_NOPERM); 4849 return 0; 4850 } 4851 } 4852 4853 /* 4854 ** Read and order the queue. 4855 */ 4856 4857 nrequests = gatherq(qgrp, qdir, true, NULL, NULL, NULL); 4858 (void) sortq(Queue[qgrp]->qg_maxlist); 4859 4860 /* 4861 ** Print the work list that we have read. 4862 */ 4863 4864 /* first see if there is anything */ 4865 if (nrequests <= 0) 4866 { 4867 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, "%s is empty\n", 4868 qid_printqueue(qgrp, qdir)); 4869 return 0; 4870 } 4871 4872 sm_getla(); /* get load average */ 4873 4874 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, "\t\t%s (%d request%s", 4875 qid_printqueue(qgrp, qdir), 4876 nrequests, nrequests == 1 ? "" : "s"); 4877 if (MaxQueueRun > 0 && nrequests > MaxQueueRun) 4878 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4879 ", only %d printed", MaxQueueRun); 4880 if (Verbose) 4881 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4882 ")\n-----Q-ID----- --Size-- -Priority- ---Q-Time--- --------Sender/Recipient--------\n"); 4883 else 4884 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4885 ")\n-----Q-ID----- --Size-- -----Q-Time----- ------------Sender/Recipient-----------\n"); 4886 for (w = WorkQ; w != NULL; w = w->w_next) 4887 { 4888 struct stat st; 4889 auto time_t submittime = 0; 4890 long dfsize; 4891 int flags = 0; 4892 int qfver; 4893 char quarmsg[MAXLINE]; 4894 char statmsg[MAXLINE]; 4895 char bodytype[MAXNAME + 1]; 4896 char qf[MAXPATHLEN]; 4897 4898 if (StopRequest) 4899 stop_sendmail(); 4900 4901 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, "%13s", 4902 w->w_name + 2); 4903 (void) sm_strlcpyn(qf, sizeof(qf), 3, qd, "/", w->w_name); 4904 f = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, qf, SM_IO_RDONLY_B, 4905 NULL); 4906 if (f == NULL) 4907 { 4908 if (errno == EPERM) 4909 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4910 " (permission denied)\n"); 4911 else if (errno == ENOENT) 4912 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4913 " (job completed)\n"); 4914 else 4915 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4916 " (%s)\n", 4917 sm_errstring(errno)); 4918 errno = 0; 4919 continue; 4920 } 4921 w->w_name[0] = DATAFL_LETTER; 4922 (void) sm_strlcpyn(qf, sizeof(qf), 3, qddf, "/", w->w_name); 4923 if (stat(qf, &st) >= 0) 4924 dfsize = st.st_size; 4925 else 4926 { 4927 ENVELOPE e; 4928 4929 /* 4930 ** Maybe the df file can't be statted because 4931 ** it is in a different directory than the qf file. 4932 ** In order to find out, we must read the qf file. 4933 */ 4934 4935 newenvelope(&e, &BlankEnvelope, sm_rpool_new_x(NULL)); 4936 e.e_id = w->w_name + 2; 4937 e.e_qgrp = qgrp; 4938 e.e_qdir = qdir; 4939 dfsize = -1; 4940 if (readqf(&e, false)) 4941 { 4942 char *df = queuename(&e, DATAFL_LETTER); 4943 if (stat(df, &st) >= 0) 4944 dfsize = st.st_size; 4945 } 4946 if (e.e_lockfp != NULL) 4947 { 4948 (void) sm_io_close(e.e_lockfp, SM_TIME_DEFAULT); 4949 e.e_lockfp = NULL; 4950 } 4951 clearenvelope(&e, false, e.e_rpool); 4952 sm_rpool_free(e.e_rpool); 4953 } 4954 if (w->w_lock) 4955 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, "*"); 4956 else if (QueueMode == QM_LOST) 4957 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, "?"); 4958 else if (w->w_tooyoung) 4959 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, "-"); 4960 else if (shouldqueue(w->w_pri, w->w_ctime)) 4961 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, "X"); 4962 else 4963 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, " "); 4964 4965 errno = 0; 4966 4967 quarmsg[0] = '\0'; 4968 statmsg[0] = bodytype[0] = '\0'; 4969 qfver = 0; 4970 while (sm_io_fgets(f, SM_TIME_DEFAULT, buf, sizeof(buf)) != NULL) 4971 { 4972 register int i; 4973 register char *p; 4974 4975 if (StopRequest) 4976 stop_sendmail(); 4977 4978 fixcrlf(buf, true); 4979 switch (buf[0]) 4980 { 4981 case 'V': /* queue file version */ 4982 qfver = atoi(&buf[1]); 4983 break; 4984 4985 case 'M': /* error message */ 4986 if ((i = strlen(&buf[1])) >= sizeof(statmsg)) 4987 i = sizeof(statmsg) - 1; 4988 memmove(statmsg, &buf[1], i); 4989 statmsg[i] = '\0'; 4990 break; 4991 4992 case 'q': /* quarantine reason */ 4993 if ((i = strlen(&buf[1])) >= sizeof(quarmsg)) 4994 i = sizeof(quarmsg) - 1; 4995 memmove(quarmsg, &buf[1], i); 4996 quarmsg[i] = '\0'; 4997 break; 4998 4999 case 'B': /* body type */ 5000 if ((i = strlen(&buf[1])) >= sizeof(bodytype)) 5001 i = sizeof(bodytype) - 1; 5002 memmove(bodytype, &buf[1], i); 5003 bodytype[i] = '\0'; 5004 break; 5005 5006 case 'S': /* sender name */ 5007 if (Verbose) 5008 { 5009 (void) sm_io_fprintf(smioout, 5010 SM_TIME_DEFAULT, 5011 "%8ld %10ld%c%.12s ", 5012 dfsize, 5013 w->w_pri, 5014 bitset(EF_WARNING, flags) 5015 ? '+' : ' ', 5016 ctime(&submittime) + 4); 5017 prtstr(&buf[1], 78); 5018 } 5019 else 5020 { 5021 (void) sm_io_fprintf(smioout, 5022 SM_TIME_DEFAULT, 5023 "%8ld %.16s ", 5024 dfsize, 5025 ctime(&submittime)); 5026 prtstr(&buf[1], 39); 5027 } 5028 5029 if (quarmsg[0] != '\0') 5030 { 5031 (void) sm_io_fprintf(smioout, 5032 SM_TIME_DEFAULT, 5033 "\n QUARANTINE: %.*s", 5034 Verbose ? 100 : 60, 5035 quarmsg); 5036 quarmsg[0] = '\0'; 5037 } 5038 5039 if (statmsg[0] != '\0' || bodytype[0] != '\0') 5040 { 5041 (void) sm_io_fprintf(smioout, 5042 SM_TIME_DEFAULT, 5043 "\n %10.10s", 5044 bodytype); 5045 if (statmsg[0] != '\0') 5046 (void) sm_io_fprintf(smioout, 5047 SM_TIME_DEFAULT, 5048 " (%.*s)", 5049 Verbose ? 100 : 60, 5050 statmsg); 5051 statmsg[0] = '\0'; 5052 } 5053 break; 5054 5055 case 'C': /* controlling user */ 5056 if (Verbose) 5057 (void) sm_io_fprintf(smioout, 5058 SM_TIME_DEFAULT, 5059 "\n\t\t\t\t\t\t(---%.64s---)", 5060 &buf[1]); 5061 break; 5062 5063 case 'R': /* recipient name */ 5064 p = &buf[1]; 5065 if (qfver >= 1) 5066 { 5067 p = strchr(p, ':'); 5068 if (p == NULL) 5069 break; 5070 p++; 5071 } 5072 if (Verbose) 5073 { 5074 (void) sm_io_fprintf(smioout, 5075 SM_TIME_DEFAULT, 5076 "\n\t\t\t\t\t\t"); 5077 prtstr(p, 71); 5078 } 5079 else 5080 { 5081 (void) sm_io_fprintf(smioout, 5082 SM_TIME_DEFAULT, 5083 "\n\t\t\t\t\t "); 5084 prtstr(p, 38); 5085 } 5086 if (Verbose && statmsg[0] != '\0') 5087 { 5088 (void) sm_io_fprintf(smioout, 5089 SM_TIME_DEFAULT, 5090 "\n\t\t (%.100s)", 5091 statmsg); 5092 statmsg[0] = '\0'; 5093 } 5094 break; 5095 5096 case 'T': /* creation time */ 5097 submittime = atol(&buf[1]); 5098 break; 5099 5100 case 'F': /* flag bits */ 5101 for (p = &buf[1]; *p != '\0'; p++) 5102 { 5103 switch (*p) 5104 { 5105 case 'w': 5106 flags |= EF_WARNING; 5107 break; 5108 } 5109 } 5110 } 5111 } 5112 if (submittime == (time_t) 0) 5113 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 5114 " (no control file)"); 5115 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, "\n"); 5116 (void) sm_io_close(f, SM_TIME_DEFAULT); 5117 } 5118 return nrequests; 5119} 5120 5121/* 5122** QUEUE_LETTER -- get the proper queue letter for the current QueueMode. 5123** 5124** Parameters: 5125** e -- envelope to build it in/from. 5126** type -- the file type, used as the first character 5127** of the file name. 5128** 5129** Returns: 5130** the letter to use 5131*/ 5132 5133static char 5134queue_letter(e, type) 5135 ENVELOPE *e; 5136 int type; 5137{ 5138 /* Change type according to QueueMode */ 5139 if (type == ANYQFL_LETTER) 5140 { 5141 if (e->e_quarmsg != NULL) 5142 type = QUARQF_LETTER; 5143 else 5144 { 5145 switch (QueueMode) 5146 { 5147 case QM_NORMAL: 5148 type = NORMQF_LETTER; 5149 break; 5150 5151 case QM_QUARANTINE: 5152 type = QUARQF_LETTER; 5153 break; 5154 5155 case QM_LOST: 5156 type = LOSEQF_LETTER; 5157 break; 5158 5159 default: 5160 /* should never happen */ 5161 abort(); 5162 /* NOTREACHED */ 5163 } 5164 } 5165 } 5166 return type; 5167} 5168 5169/* 5170** QUEUENAME -- build a file name in the queue directory for this envelope. 5171** 5172** Parameters: 5173** e -- envelope to build it in/from. 5174** type -- the file type, used as the first character 5175** of the file name. 5176** 5177** Returns: 5178** a pointer to the queue name (in a static buffer). 5179** 5180** Side Effects: 5181** If no id code is already assigned, queuename() will 5182** assign an id code with assign_queueid(). If no queue 5183** directory is assigned, one will be set with setnewqueue(). 5184*/ 5185 5186char * 5187queuename(e, type) 5188 register ENVELOPE *e; 5189 int type; 5190{ 5191 int qd, qg; 5192 char *sub = "/"; 5193 char pref[3]; 5194 static char buf[MAXPATHLEN]; 5195 5196 /* Assign an ID if needed */ 5197 if (e->e_id == NULL) 5198 assign_queueid(e); 5199 type = queue_letter(e, type); 5200 5201 /* begin of filename */ 5202 pref[0] = (char) type; 5203 pref[1] = 'f'; 5204 pref[2] = '\0'; 5205 5206 /* Assign a queue group/directory if needed */ 5207 if (type == XSCRPT_LETTER) 5208 { 5209 /* 5210 ** We don't want to call setnewqueue() if we are fetching 5211 ** the pathname of the transcript file, because setnewqueue 5212 ** chooses a queue, and sometimes we need to write to the 5213 ** transcript file before we have gathered enough information 5214 ** to choose a queue. 5215 */ 5216 5217 if (e->e_xfqgrp == NOQGRP || e->e_xfqdir == NOQDIR) 5218 { 5219 if (e->e_qgrp != NOQGRP && e->e_qdir != NOQDIR) 5220 { 5221 e->e_xfqgrp = e->e_qgrp; 5222 e->e_xfqdir = e->e_qdir; 5223 } 5224 else 5225 { 5226 e->e_xfqgrp = 0; 5227 if (Queue[e->e_xfqgrp]->qg_numqueues <= 1) 5228 e->e_xfqdir = 0; 5229 else 5230 { 5231 e->e_xfqdir = get_rand_mod( 5232 Queue[e->e_xfqgrp]->qg_numqueues); 5233 } 5234 } 5235 } 5236 qd = e->e_xfqdir; 5237 qg = e->e_xfqgrp; 5238 } 5239 else 5240 { 5241 if (e->e_qgrp == NOQGRP || e->e_qdir == NOQDIR) 5242 (void) setnewqueue(e); 5243 if (type == DATAFL_LETTER) 5244 { 5245 qd = e->e_dfqdir; 5246 qg = e->e_dfqgrp; 5247 } 5248 else 5249 { 5250 qd = e->e_qdir; 5251 qg = e->e_qgrp; 5252 } 5253 } 5254 5255 /* xf files always have a valid qd and qg picked above */ 5256 if ((qd == NOQDIR || qg == NOQGRP) && type != XSCRPT_LETTER) 5257 (void) sm_strlcpyn(buf, sizeof(buf), 2, pref, e->e_id); 5258 else 5259 { 5260 switch (type) 5261 { 5262 case DATAFL_LETTER: 5263 if (bitset(QP_SUBDF, Queue[qg]->qg_qpaths[qd].qp_subdirs)) 5264 sub = "/df/"; 5265 break; 5266 5267 case QUARQF_LETTER: 5268 case TEMPQF_LETTER: 5269 case NEWQFL_LETTER: 5270 case LOSEQF_LETTER: 5271 case NORMQF_LETTER: 5272 if (bitset(QP_SUBQF, Queue[qg]->qg_qpaths[qd].qp_subdirs)) 5273 sub = "/qf/"; 5274 break; 5275 5276 case XSCRPT_LETTER: 5277 if (bitset(QP_SUBXF, Queue[qg]->qg_qpaths[qd].qp_subdirs)) 5278 sub = "/xf/"; 5279 break; 5280 5281 default: 5282 sm_abort("queuename: bad queue file type %d", type); 5283 } 5284 5285 (void) sm_strlcpyn(buf, sizeof(buf), 4, 5286 Queue[qg]->qg_qpaths[qd].qp_name, 5287 sub, pref, e->e_id); 5288 } 5289 5290 if (tTd(7, 2)) 5291 sm_dprintf("queuename: %s\n", buf); 5292 return buf; 5293} 5294 5295/* 5296** INIT_QID_ALG -- Initialize the (static) parameters that are used to 5297** generate a queue ID. 5298** 5299** This function is called by the daemon to reset 5300** LastQueueTime and LastQueuePid which are used by assign_queueid(). 5301** Otherwise the algorithm may cause problems because 5302** LastQueueTime and LastQueuePid are set indirectly by main() 5303** before the daemon process is started, hence LastQueuePid is not 5304** the pid of the daemon and therefore a child of the daemon can 5305** actually have the same pid as LastQueuePid which means the section 5306** in assign_queueid(): 5307** * see if we need to get a new base time/pid * 5308** is NOT triggered which will cause the same queue id to be generated. 5309** 5310** Parameters: 5311** none 5312** 5313** Returns: 5314** none. 5315*/ 5316 5317void 5318init_qid_alg() 5319{ 5320 LastQueueTime = 0; 5321 LastQueuePid = -1; 5322} 5323 5324/* 5325** ASSIGN_QUEUEID -- assign a queue ID for this envelope. 5326** 5327** Assigns an id code if one does not already exist. 5328** This code assumes that nothing will remain in the queue for 5329** longer than 60 years. It is critical that files with the given 5330** name do not already exist in the queue. 5331** [No longer initializes e_qdir to NOQDIR.] 5332** 5333** Parameters: 5334** e -- envelope to set it in. 5335** 5336** Returns: 5337** none. 5338*/ 5339 5340static const char QueueIdChars[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; 5341# define QIC_LEN 60 5342# define QIC_LEN_R 62 5343 5344/* 5345** Note: the length is "officially" 60 because minutes and seconds are 5346** usually only 0-59. However (Linux): 5347** tm_sec The number of seconds after the minute, normally in 5348** the range 0 to 59, but can be up to 61 to allow for 5349** leap seconds. 5350** Hence the real length of the string is 62 to take this into account. 5351** Alternatively % QIC_LEN can (should) be used for access everywhere. 5352*/ 5353 5354# define queuenextid() CurrentPid 5355#define QIC_LEN_SQR (QIC_LEN * QIC_LEN) 5356 5357void 5358assign_queueid(e) 5359 register ENVELOPE *e; 5360{ 5361 pid_t pid = queuenextid(); 5362 static unsigned int cX = 0; 5363 static unsigned int random_offset; 5364 struct tm *tm; 5365 char idbuf[MAXQFNAME - 2]; 5366 unsigned int seq; 5367 5368 if (e->e_id != NULL) 5369 return; 5370 5371 /* see if we need to get a new base time/pid */ 5372 if (cX >= QIC_LEN_SQR || LastQueueTime == 0 || LastQueuePid != pid) 5373 { 5374 time_t then = LastQueueTime; 5375 5376 /* if the first time through, pick a random offset */ 5377 if (LastQueueTime == 0) 5378 random_offset = ((unsigned int)get_random()) 5379 % QIC_LEN_SQR; 5380 5381 while ((LastQueueTime = curtime()) == then && 5382 LastQueuePid == pid) 5383 { 5384 (void) sleep(1); 5385 } 5386 LastQueuePid = queuenextid(); 5387 cX = 0; 5388 } 5389 5390 /* 5391 ** Generate a new sequence number between 0 and QIC_LEN_SQR-1. 5392 ** This lets us generate up to QIC_LEN_SQR unique queue ids 5393 ** per second, per process. With envelope splitting, 5394 ** a single message can consume many queue ids. 5395 */ 5396 5397 seq = (cX + random_offset) % QIC_LEN_SQR; 5398 ++cX; 5399 if (tTd(7, 50)) 5400 sm_dprintf("assign_queueid: random_offset=%u (%u)\n", 5401 random_offset, seq); 5402 5403 tm = gmtime(&LastQueueTime); 5404 idbuf[0] = QueueIdChars[tm->tm_year % QIC_LEN]; 5405 idbuf[1] = QueueIdChars[tm->tm_mon]; 5406 idbuf[2] = QueueIdChars[tm->tm_mday]; 5407 idbuf[3] = QueueIdChars[tm->tm_hour]; 5408 idbuf[4] = QueueIdChars[tm->tm_min % QIC_LEN_R]; 5409 idbuf[5] = QueueIdChars[tm->tm_sec % QIC_LEN_R]; 5410 idbuf[6] = QueueIdChars[seq / QIC_LEN]; 5411 idbuf[7] = QueueIdChars[seq % QIC_LEN]; 5412 (void) sm_snprintf(&idbuf[8], sizeof(idbuf) - 8, "%06d", 5413 (int) LastQueuePid); 5414 e->e_id = sm_rpool_strdup_x(e->e_rpool, idbuf); 5415 macdefine(&e->e_macro, A_PERM, 'i', e->e_id); 5416#if 0 5417 /* XXX: inherited from MainEnvelope */ 5418 e->e_qgrp = NOQGRP; /* too early to do anything else */ 5419 e->e_qdir = NOQDIR; 5420 e->e_xfqgrp = NOQGRP; 5421#endif /* 0 */ 5422 5423 /* New ID means it's not on disk yet */ 5424 e->e_qfletter = '\0'; 5425 5426 if (tTd(7, 1)) 5427 sm_dprintf("assign_queueid: assigned id %s, e=%p\n", 5428 e->e_id, e); 5429 if (LogLevel > 93) 5430 sm_syslog(LOG_DEBUG, e->e_id, "assigned id"); 5431} 5432/* 5433** SYNC_QUEUE_TIME -- Assure exclusive PID in any given second 5434** 5435** Make sure one PID can't be used by two processes in any one second. 5436** 5437** If the system rotates PIDs fast enough, may get the 5438** same pid in the same second for two distinct processes. 5439** This will interfere with the queue file naming system. 5440** 5441** Parameters: 5442** none 5443** 5444** Returns: 5445** none 5446*/ 5447 5448void 5449sync_queue_time() 5450{ 5451#if FAST_PID_RECYCLE 5452 if (OpMode != MD_TEST && 5453 OpMode != MD_CHECKCONFIG && 5454 OpMode != MD_VERIFY && 5455 LastQueueTime > 0 && 5456 LastQueuePid == CurrentPid && 5457 curtime() == LastQueueTime) 5458 (void) sleep(1); 5459#endif /* FAST_PID_RECYCLE */ 5460} 5461/* 5462** UNLOCKQUEUE -- unlock the queue entry for a specified envelope 5463** 5464** Parameters: 5465** e -- the envelope to unlock. 5466** 5467** Returns: 5468** none 5469** 5470** Side Effects: 5471** unlocks the queue for `e'. 5472*/ 5473 5474void 5475unlockqueue(e) 5476 ENVELOPE *e; 5477{ 5478 if (tTd(51, 4)) 5479 sm_dprintf("unlockqueue(%s)\n", 5480 e->e_id == NULL ? "NOQUEUE" : e->e_id); 5481 5482 5483 /* if there is a lock file in the envelope, close it */ 5484 if (e->e_lockfp != NULL) 5485 (void) sm_io_close(e->e_lockfp, SM_TIME_DEFAULT); 5486 e->e_lockfp = NULL; 5487 5488 /* don't create a queue id if we don't already have one */ 5489 if (e->e_id == NULL) 5490 return; 5491 5492 /* remove the transcript */ 5493 if (LogLevel > 87) 5494 sm_syslog(LOG_DEBUG, e->e_id, "unlock"); 5495 if (!tTd(51, 104)) 5496 (void) xunlink(queuename(e, XSCRPT_LETTER)); 5497} 5498/* 5499** SETCTLUSER -- create a controlling address 5500** 5501** Create a fake "address" given only a local login name; this is 5502** used as a "controlling user" for future recipient addresses. 5503** 5504** Parameters: 5505** user -- the user name of the controlling user. 5506** qfver -- the version stamp of this queue file. 5507** e -- envelope 5508** 5509** Returns: 5510** An address descriptor for the controlling user, 5511** using storage allocated from e->e_rpool. 5512** 5513*/ 5514 5515static ADDRESS * 5516setctluser(user, qfver, e) 5517 char *user; 5518 int qfver; 5519 ENVELOPE *e; 5520{ 5521 register ADDRESS *a; 5522 struct passwd *pw; 5523 char *p; 5524 5525 /* 5526 ** See if this clears our concept of controlling user. 5527 */ 5528 5529 if (user == NULL || *user == '\0') 5530 return NULL; 5531 5532 /* 5533 ** Set up addr fields for controlling user. 5534 */ 5535 5536 a = (ADDRESS *) sm_rpool_malloc_x(e->e_rpool, sizeof(*a)); 5537 memset((char *) a, '\0', sizeof(*a)); 5538 5539 if (*user == ':') 5540 { 5541 p = &user[1]; 5542 a->q_user = sm_rpool_strdup_x(e->e_rpool, p); 5543 } 5544 else 5545 { 5546 p = strtok(user, ":"); 5547 a->q_user = sm_rpool_strdup_x(e->e_rpool, user); 5548 if (qfver >= 2) 5549 { 5550 if ((p = strtok(NULL, ":")) != NULL) 5551 a->q_uid = atoi(p); 5552 if ((p = strtok(NULL, ":")) != NULL) 5553 a->q_gid = atoi(p); 5554 if ((p = strtok(NULL, ":")) != NULL) 5555 { 5556 char *o; 5557 5558 a->q_flags |= QGOODUID; 5559 5560 /* if there is another ':': restore it */ 5561 if ((o = strtok(NULL, ":")) != NULL && o > p) 5562 o[-1] = ':'; 5563 } 5564 } 5565 else if ((pw = sm_getpwnam(user)) != NULL) 5566 { 5567 if (*pw->pw_dir == '\0') 5568 a->q_home = NULL; 5569 else if (strcmp(pw->pw_dir, "/") == 0) 5570 a->q_home = ""; 5571 else 5572 a->q_home = sm_rpool_strdup_x(e->e_rpool, pw->pw_dir); 5573 a->q_uid = pw->pw_uid; 5574 a->q_gid = pw->pw_gid; 5575 a->q_flags |= QGOODUID; 5576 } 5577 } 5578 5579 a->q_flags |= QPRIMARY; /* flag as a "ctladdr" */ 5580 a->q_mailer = LocalMailer; 5581 if (p == NULL) 5582 a->q_paddr = sm_rpool_strdup_x(e->e_rpool, a->q_user); 5583 else 5584 a->q_paddr = sm_rpool_strdup_x(e->e_rpool, p); 5585 return a; 5586} 5587/* 5588** LOSEQFILE -- rename queue file with LOSEQF_LETTER & try to let someone know 5589** 5590** Parameters: 5591** e -- the envelope (e->e_id will be used). 5592** why -- reported to whomever can hear. 5593** 5594** Returns: 5595** none. 5596*/ 5597 5598void 5599loseqfile(e, why) 5600 register ENVELOPE *e; 5601 char *why; 5602{ 5603 bool loseit = true; 5604 char *p; 5605 char buf[MAXPATHLEN]; 5606 5607 if (e == NULL || e->e_id == NULL) 5608 return; 5609 p = queuename(e, ANYQFL_LETTER); 5610 if (sm_strlcpy(buf, p, sizeof(buf)) >= sizeof(buf)) 5611 return; 5612 if (!bitset(EF_INQUEUE, e->e_flags)) 5613 queueup(e, false, true); 5614 else if (QueueMode == QM_LOST) 5615 loseit = false; 5616 5617 /* if already lost, no need to re-lose */ 5618 if (loseit) 5619 { 5620 p = queuename(e, LOSEQF_LETTER); 5621 if (rename(buf, p) < 0) 5622 syserr("cannot rename(%s, %s), uid=%d", 5623 buf, p, (int) geteuid()); 5624 else if (LogLevel > 0) 5625 sm_syslog(LOG_ALERT, e->e_id, 5626 "Losing %s: %s", buf, why); 5627 } 5628 if (e->e_dfp != NULL) 5629 { 5630 (void) sm_io_close(e->e_dfp, SM_TIME_DEFAULT); 5631 e->e_dfp = NULL; 5632 } 5633 e->e_flags &= ~EF_HAS_DF; 5634} 5635/* 5636** NAME2QID -- translate a queue group name to a queue group id 5637** 5638** Parameters: 5639** queuename -- name of queue group. 5640** 5641** Returns: 5642** queue group id if found. 5643** NOQGRP otherwise. 5644*/ 5645 5646int 5647name2qid(queuename) 5648 char *queuename; 5649{ 5650 register STAB *s; 5651 5652 s = stab(queuename, ST_QUEUE, ST_FIND); 5653 if (s == NULL) 5654 return NOQGRP; 5655 return s->s_quegrp->qg_index; 5656} 5657/* 5658** QID_PRINTNAME -- create externally printable version of queue id 5659** 5660** Parameters: 5661** e -- the envelope. 5662** 5663** Returns: 5664** a printable version 5665*/ 5666 5667char * 5668qid_printname(e) 5669 ENVELOPE *e; 5670{ 5671 char *id; 5672 static char idbuf[MAXQFNAME + 34]; 5673 5674 if (e == NULL) 5675 return ""; 5676 5677 if (e->e_id == NULL) 5678 id = ""; 5679 else 5680 id = e->e_id; 5681 5682 if (e->e_qdir == NOQDIR) 5683 return id; 5684 5685 (void) sm_snprintf(idbuf, sizeof(idbuf), "%.32s/%s", 5686 Queue[e->e_qgrp]->qg_qpaths[e->e_qdir].qp_name, 5687 id); 5688 return idbuf; 5689} 5690/* 5691** QID_PRINTQUEUE -- create full version of queue directory for data files 5692** 5693** Parameters: 5694** qgrp -- index in queue group. 5695** qdir -- the short version of the queue directory 5696** 5697** Returns: 5698** the full pathname to the queue (might point to a static var) 5699*/ 5700 5701char * 5702qid_printqueue(qgrp, qdir) 5703 int qgrp; 5704 int qdir; 5705{ 5706 char *subdir; 5707 static char dir[MAXPATHLEN]; 5708 5709 if (qdir == NOQDIR) 5710 return Queue[qgrp]->qg_qdir; 5711 5712 if (strcmp(Queue[qgrp]->qg_qpaths[qdir].qp_name, ".") == 0) 5713 subdir = NULL; 5714 else 5715 subdir = Queue[qgrp]->qg_qpaths[qdir].qp_name; 5716 5717 (void) sm_strlcpyn(dir, sizeof(dir), 4, 5718 Queue[qgrp]->qg_qdir, 5719 subdir == NULL ? "" : "/", 5720 subdir == NULL ? "" : subdir, 5721 (bitset(QP_SUBDF, 5722 Queue[qgrp]->qg_qpaths[qdir].qp_subdirs) 5723 ? "/df" : "")); 5724 return dir; 5725} 5726 5727/* 5728** PICKQDIR -- Pick a queue directory from a queue group 5729** 5730** Parameters: 5731** qg -- queue group 5732** fsize -- file size in bytes 5733** e -- envelope, or NULL 5734** 5735** Result: 5736** NOQDIR if no queue directory in qg has enough free space to 5737** hold a file of size 'fsize', otherwise the index of 5738** a randomly selected queue directory which resides on a 5739** file system with enough disk space. 5740** XXX This could be extended to select a queuedir with 5741** a few (the fewest?) number of entries. That data 5742** is available if shared memory is used. 5743** 5744** Side Effects: 5745** If the request fails and e != NULL then sm_syslog is called. 5746*/ 5747 5748int 5749pickqdir(qg, fsize, e) 5750 QUEUEGRP *qg; 5751 long fsize; 5752 ENVELOPE *e; 5753{ 5754 int qdir; 5755 int i; 5756 long avail = 0; 5757 5758 /* Pick a random directory, as a starting point. */ 5759 if (qg->qg_numqueues <= 1) 5760 qdir = 0; 5761 else 5762 qdir = get_rand_mod(qg->qg_numqueues); 5763 5764#if _FFR_TESTS 5765 if (tTd(4, 101)) 5766 return NOQDIR; 5767#endif /* _FFR_TESTS */ 5768 if (MinBlocksFree <= 0 && fsize <= 0) 5769 return qdir; 5770 5771 /* 5772 ** Now iterate over the queue directories, 5773 ** looking for a directory with enough space for this message. 5774 */ 5775 5776 i = qdir; 5777 do 5778 { 5779 QPATHS *qp = &qg->qg_qpaths[i]; 5780 long needed = 0; 5781 long fsavail = 0; 5782 5783 if (fsize > 0) 5784 needed += fsize / FILE_SYS_BLKSIZE(qp->qp_fsysidx) 5785 + ((fsize % FILE_SYS_BLKSIZE(qp->qp_fsysidx) 5786 > 0) ? 1 : 0); 5787 if (MinBlocksFree > 0) 5788 needed += MinBlocksFree; 5789 fsavail = FILE_SYS_AVAIL(qp->qp_fsysidx); 5790#if SM_CONF_SHM 5791 if (fsavail <= 0) 5792 { 5793 long blksize; 5794 5795 /* 5796 ** might be not correctly updated, 5797 ** let's try to get the info directly. 5798 */ 5799 5800 fsavail = freediskspace(FILE_SYS_NAME(qp->qp_fsysidx), 5801 &blksize); 5802 if (fsavail < 0) 5803 fsavail = 0; 5804 } 5805#endif /* SM_CONF_SHM */ 5806 if (needed <= fsavail) 5807 return i; 5808 if (avail < fsavail) 5809 avail = fsavail; 5810 5811 if (qg->qg_numqueues > 0) 5812 i = (i + 1) % qg->qg_numqueues; 5813 } while (i != qdir); 5814 5815 if (e != NULL && LogLevel > 0) 5816 sm_syslog(LOG_ALERT, e->e_id, 5817 "low on space (%s needs %ld bytes + %ld blocks in %s), max avail: %ld", 5818 CurHostName == NULL ? "SMTP-DAEMON" : CurHostName, 5819 fsize, MinBlocksFree, 5820 qg->qg_qdir, avail); 5821 return NOQDIR; 5822} 5823/* 5824** SETNEWQUEUE -- Sets a new queue group and directory 5825** 5826** Assign a queue group and directory to an envelope and store the 5827** directory in e->e_qdir. 5828** 5829** Parameters: 5830** e -- envelope to assign a queue for. 5831** 5832** Returns: 5833** true if successful 5834** false otherwise 5835** 5836** Side Effects: 5837** On success, e->e_qgrp and e->e_qdir are non-negative. 5838** On failure (not enough disk space), 5839** e->qgrp = NOQGRP, e->e_qdir = NOQDIR 5840** and usrerr() is invoked (which could raise an exception). 5841*/ 5842 5843bool 5844setnewqueue(e) 5845 ENVELOPE *e; 5846{ 5847 if (tTd(41, 20)) 5848 sm_dprintf("setnewqueue: called\n"); 5849 5850 /* not set somewhere else */ 5851 if (e->e_qgrp == NOQGRP) 5852 { 5853 ADDRESS *q; 5854 5855 /* 5856 ** Use the queue group of the "first" recipient, as set by 5857 ** the "queuegroup" rule set. If that is not defined, then 5858 ** use the queue group of the mailer of the first recipient. 5859 ** If that is not defined either, then use the default 5860 ** queue group. 5861 ** Notice: "first" depends on the sorting of sendqueue 5862 ** in recipient(). 5863 ** To avoid problems with "bad" recipients look 5864 ** for a valid address first. 5865 */ 5866 5867 q = e->e_sendqueue; 5868 while (q != NULL && 5869 (QS_IS_BADADDR(q->q_state) || QS_IS_DEAD(q->q_state))) 5870 { 5871 q = q->q_next; 5872 } 5873 if (q == NULL) 5874 e->e_qgrp = 0; 5875 else if (q->q_qgrp >= 0) 5876 e->e_qgrp = q->q_qgrp; 5877 else if (q->q_mailer != NULL && 5878 ISVALIDQGRP(q->q_mailer->m_qgrp)) 5879 e->e_qgrp = q->q_mailer->m_qgrp; 5880 else 5881 e->e_qgrp = 0; 5882 e->e_dfqgrp = e->e_qgrp; 5883 } 5884 5885 if (ISVALIDQDIR(e->e_qdir) && ISVALIDQDIR(e->e_dfqdir)) 5886 { 5887 if (tTd(41, 20)) 5888 sm_dprintf("setnewqueue: e_qdir already assigned (%s)\n", 5889 qid_printqueue(e->e_qgrp, e->e_qdir)); 5890 return true; 5891 } 5892 5893 filesys_update(); 5894 e->e_qdir = pickqdir(Queue[e->e_qgrp], e->e_msgsize, e); 5895 if (e->e_qdir == NOQDIR) 5896 { 5897 e->e_qgrp = NOQGRP; 5898 if (!bitset(EF_FATALERRS, e->e_flags)) 5899 usrerr("452 4.4.5 Insufficient disk space; try again later"); 5900 e->e_flags |= EF_FATALERRS; 5901 return false; 5902 } 5903 5904 if (tTd(41, 3)) 5905 sm_dprintf("setnewqueue: Assigned queue directory %s\n", 5906 qid_printqueue(e->e_qgrp, e->e_qdir)); 5907 5908 if (e->e_xfqgrp == NOQGRP || e->e_xfqdir == NOQDIR) 5909 { 5910 e->e_xfqgrp = e->e_qgrp; 5911 e->e_xfqdir = e->e_qdir; 5912 } 5913 e->e_dfqdir = e->e_qdir; 5914 return true; 5915} 5916/* 5917** CHKQDIR -- check a queue directory 5918** 5919** Parameters: 5920** name -- name of queue directory 5921** sff -- flags for safefile() 5922** 5923** Returns: 5924** is it a queue directory? 5925*/ 5926 5927static bool chkqdir __P((char *, long)); 5928 5929static bool 5930chkqdir(name, sff) 5931 char *name; 5932 long sff; 5933{ 5934 struct stat statb; 5935 int i; 5936 5937 /* skip over . and .. directories */ 5938 if (name[0] == '.' && 5939 (name[1] == '\0' || (name[1] == '.' && name[2] == '\0'))) 5940 return false; 5941#if HASLSTAT 5942 if (lstat(name, &statb) < 0) 5943#else /* HASLSTAT */ 5944 if (stat(name, &statb) < 0) 5945#endif /* HASLSTAT */ 5946 { 5947 if (tTd(41, 2)) 5948 sm_dprintf("chkqdir: stat(\"%s\"): %s\n", 5949 name, sm_errstring(errno)); 5950 return false; 5951 } 5952#if HASLSTAT 5953 if (S_ISLNK(statb.st_mode)) 5954 { 5955 /* 5956 ** For a symlink we need to make sure the 5957 ** target is a directory 5958 */ 5959 5960 if (stat(name, &statb) < 0) 5961 { 5962 if (tTd(41, 2)) 5963 sm_dprintf("chkqdir: stat(\"%s\"): %s\n", 5964 name, sm_errstring(errno)); 5965 return false; 5966 } 5967 } 5968#endif /* HASLSTAT */ 5969 5970 if (!S_ISDIR(statb.st_mode)) 5971 { 5972 if (tTd(41, 2)) 5973 sm_dprintf("chkqdir: \"%s\": Not a directory\n", 5974 name); 5975 return false; 5976 } 5977 5978 /* Print a warning if unsafe (but still use it) */ 5979 /* XXX do this only if we want the warning? */ 5980 i = safedirpath(name, RunAsUid, RunAsGid, NULL, sff, 0, 0); 5981 if (i != 0) 5982 { 5983 if (tTd(41, 2)) 5984 sm_dprintf("chkqdir: \"%s\": Not safe: %s\n", 5985 name, sm_errstring(i)); 5986#if _FFR_CHK_QUEUE 5987 if (LogLevel > 8) 5988 sm_syslog(LOG_WARNING, NOQID, 5989 "queue directory \"%s\": Not safe: %s", 5990 name, sm_errstring(i)); 5991#endif /* _FFR_CHK_QUEUE */ 5992 } 5993 return true; 5994} 5995/* 5996** MULTIQUEUE_CACHE -- cache a list of paths to queues. 5997** 5998** Each potential queue is checked as the cache is built. 5999** Thereafter, each is blindly trusted. 6000** Note that we can be called again after a timeout to rebuild 6001** (although code for that is not ready yet). 6002** 6003** Parameters: 6004** basedir -- base of all queue directories. 6005** blen -- strlen(basedir). 6006** qg -- queue group. 6007** qn -- number of queue directories already cached. 6008** phash -- pointer to hash value over queue dirs. 6009#if SM_CONF_SHM 6010** only used if shared memory is active. 6011#endif * SM_CONF_SHM * 6012** 6013** Returns: 6014** new number of queue directories. 6015*/ 6016 6017#define INITIAL_SLOTS 20 6018#define ADD_SLOTS 10 6019 6020static int 6021multiqueue_cache(basedir, blen, qg, qn, phash) 6022 char *basedir; 6023 int blen; 6024 QUEUEGRP *qg; 6025 int qn; 6026 unsigned int *phash; 6027{ 6028 char *cp; 6029 int i, len; 6030 int slotsleft = 0; 6031 long sff = SFF_ANYFILE; 6032 char qpath[MAXPATHLEN]; 6033 char subdir[MAXPATHLEN]; 6034 char prefix[MAXPATHLEN]; /* dir relative to basedir */ 6035 6036 if (tTd(41, 20)) 6037 sm_dprintf("multiqueue_cache: called\n"); 6038 6039 /* Initialize to current directory */ 6040 prefix[0] = '.'; 6041 prefix[1] = '\0'; 6042 if (qg->qg_numqueues != 0 && qg->qg_qpaths != NULL) 6043 { 6044 for (i = 0; i < qg->qg_numqueues; i++) 6045 { 6046 if (qg->qg_qpaths[i].qp_name != NULL) 6047 (void) sm_free(qg->qg_qpaths[i].qp_name); /* XXX */ 6048 } 6049 (void) sm_free((char *) qg->qg_qpaths); /* XXX */ 6050 qg->qg_qpaths = NULL; 6051 qg->qg_numqueues = 0; 6052 } 6053 6054 /* If running as root, allow safedirpath() checks to use privs */ 6055 if (RunAsUid == 0) 6056 sff |= SFF_ROOTOK; 6057#if _FFR_CHK_QUEUE 6058 sff |= SFF_SAFEDIRPATH|SFF_NOWWFILES; 6059 if (!UseMSP) 6060 sff |= SFF_NOGWFILES; 6061#endif /* _FFR_CHK_QUEUE */ 6062 6063 if (!SM_IS_DIR_START(qg->qg_qdir)) 6064 { 6065 /* 6066 ** XXX we could add basedir, but then we have to realloc() 6067 ** the string... Maybe another time. 6068 */ 6069 6070 syserr("QueuePath %s not absolute", qg->qg_qdir); 6071 ExitStat = EX_CONFIG; 6072 return qn; 6073 } 6074 6075 /* qpath: directory of current workgroup */ 6076 len = sm_strlcpy(qpath, qg->qg_qdir, sizeof(qpath)); 6077 if (len >= sizeof(qpath)) 6078 { 6079 syserr("QueuePath %.256s too long (%d max)", 6080 qg->qg_qdir, (int) sizeof(qpath)); 6081 ExitStat = EX_CONFIG; 6082 return qn; 6083 } 6084 6085 /* begin of qpath must be same as basedir */ 6086 if (strncmp(basedir, qpath, blen) != 0 && 6087 (strncmp(basedir, qpath, blen - 1) != 0 || len != blen - 1)) 6088 { 6089 syserr("QueuePath %s not subpath of QueueDirectory %s", 6090 qpath, basedir); 6091 ExitStat = EX_CONFIG; 6092 return qn; 6093 } 6094 6095 /* Do we have a nested subdirectory? */ 6096 if (blen < len && SM_FIRST_DIR_DELIM(qg->qg_qdir + blen) != NULL) 6097 { 6098 6099 /* Copy subdirectory into prefix for later use */ 6100 if (sm_strlcpy(prefix, qg->qg_qdir + blen, sizeof(prefix)) >= 6101 sizeof(prefix)) 6102 { 6103 syserr("QueuePath %.256s too long (%d max)", 6104 qg->qg_qdir, (int) sizeof(qpath)); 6105 ExitStat = EX_CONFIG; 6106 return qn; 6107 } 6108 cp = SM_LAST_DIR_DELIM(prefix); 6109 SM_ASSERT(cp != NULL); 6110 *cp = '\0'; /* cut off trailing / */ 6111 } 6112 6113 /* This is guaranteed by the basedir check above */ 6114 SM_ASSERT(len >= blen - 1); 6115 cp = &qpath[len - 1]; 6116 if (*cp == '*') 6117 { 6118 register DIR *dp; 6119 register struct dirent *d; 6120 int off; 6121 char *delim; 6122 char relpath[MAXPATHLEN]; 6123 6124 *cp = '\0'; /* Overwrite wildcard */ 6125 if ((cp = SM_LAST_DIR_DELIM(qpath)) == NULL) 6126 { 6127 syserr("QueueDirectory: can not wildcard relative path"); 6128 if (tTd(41, 2)) 6129 sm_dprintf("multiqueue_cache: \"%s*\": Can not wildcard relative path.\n", 6130 qpath); 6131 ExitStat = EX_CONFIG; 6132 return qn; 6133 } 6134 if (cp == qpath) 6135 { 6136 /* 6137 ** Special case of top level wildcard, like /foo* 6138 ** Change to //foo* 6139 */ 6140 6141 (void) sm_strlcpy(qpath + 1, qpath, sizeof(qpath) - 1); 6142 ++cp; 6143 } 6144 delim = cp; 6145 *(cp++) = '\0'; /* Replace / with \0 */ 6146 len = strlen(cp); /* Last component of queue directory */ 6147 6148 /* 6149 ** Path relative to basedir, with trailing / 6150 ** It will be modified below to specify the subdirectories 6151 ** so they can be opened without chdir(). 6152 */ 6153 6154 off = sm_strlcpyn(relpath, sizeof(relpath), 2, prefix, "/"); 6155 SM_ASSERT(off < sizeof(relpath)); 6156 6157 if (tTd(41, 2)) 6158 sm_dprintf("multiqueue_cache: prefix=\"%s%s\"\n", 6159 relpath, cp); 6160 6161 /* It is always basedir: we don't need to store it per group */ 6162 /* XXX: optimize this! -> one more global? */ 6163 qg->qg_qdir = newstr(basedir); 6164 qg->qg_qdir[blen - 1] = '\0'; /* cut off trailing / */ 6165 6166 /* 6167 ** XXX Should probably wrap this whole loop in a timeout 6168 ** in case some wag decides to NFS mount the queues. 6169 */ 6170 6171 /* Test path to get warning messages. */ 6172 if (qn == 0) 6173 { 6174 /* XXX qg_runasuid and qg_runasgid for specials? */ 6175 i = safedirpath(basedir, RunAsUid, RunAsGid, NULL, 6176 sff, 0, 0); 6177 if (i != 0 && tTd(41, 2)) 6178 sm_dprintf("multiqueue_cache: \"%s\": Not safe: %s\n", 6179 basedir, sm_errstring(i)); 6180 } 6181 6182 if ((dp = opendir(prefix)) == NULL) 6183 { 6184 syserr("can not opendir(%s/%s)", qg->qg_qdir, prefix); 6185 if (tTd(41, 2)) 6186 sm_dprintf("multiqueue_cache: opendir(\"%s/%s\"): %s\n", 6187 qg->qg_qdir, prefix, 6188 sm_errstring(errno)); 6189 ExitStat = EX_CONFIG; 6190 return qn; 6191 } 6192 while ((d = readdir(dp)) != NULL) 6193 { 6194 /* Skip . and .. directories */ 6195 if (strcmp(d->d_name, ".") == 0 || 6196 strcmp(d->d_name, "..") == 0) 6197 continue; 6198 6199 i = strlen(d->d_name); 6200 if (i < len || strncmp(d->d_name, cp, len) != 0) 6201 { 6202 if (tTd(41, 5)) 6203 sm_dprintf("multiqueue_cache: \"%s\", skipped\n", 6204 d->d_name); 6205 continue; 6206 } 6207 6208 /* Create relative pathname: prefix + local directory */ 6209 i = sizeof(relpath) - off; 6210 if (sm_strlcpy(relpath + off, d->d_name, i) >= i) 6211 continue; /* way too long */ 6212 6213 if (!chkqdir(relpath, sff)) 6214 continue; 6215 6216 if (qg->qg_qpaths == NULL) 6217 { 6218 slotsleft = INITIAL_SLOTS; 6219 qg->qg_qpaths = (QPATHS *)xalloc((sizeof(*qg->qg_qpaths)) * 6220 slotsleft); 6221 qg->qg_numqueues = 0; 6222 } 6223 else if (slotsleft < 1) 6224 { 6225 qg->qg_qpaths = (QPATHS *)sm_realloc((char *)qg->qg_qpaths, 6226 (sizeof(*qg->qg_qpaths)) * 6227 (qg->qg_numqueues + 6228 ADD_SLOTS)); 6229 if (qg->qg_qpaths == NULL) 6230 { 6231 (void) closedir(dp); 6232 return qn; 6233 } 6234 slotsleft += ADD_SLOTS; 6235 } 6236 6237 /* check subdirs */ 6238 qg->qg_qpaths[qg->qg_numqueues].qp_subdirs = QP_NOSUB; 6239 6240#define CHKRSUBDIR(name, flag) \ 6241 (void) sm_strlcpyn(subdir, sizeof(subdir), 3, relpath, "/", name); \ 6242 if (chkqdir(subdir, sff)) \ 6243 qg->qg_qpaths[qg->qg_numqueues].qp_subdirs |= flag; \ 6244 else 6245 6246 6247 CHKRSUBDIR("qf", QP_SUBQF); 6248 CHKRSUBDIR("df", QP_SUBDF); 6249 CHKRSUBDIR("xf", QP_SUBXF); 6250 6251 /* assert(strlen(d->d_name) < MAXPATHLEN - 14) */ 6252 /* maybe even - 17 (subdirs) */ 6253 6254 if (prefix[0] != '.') 6255 qg->qg_qpaths[qg->qg_numqueues].qp_name = 6256 newstr(relpath); 6257 else 6258 qg->qg_qpaths[qg->qg_numqueues].qp_name = 6259 newstr(d->d_name); 6260 6261 if (tTd(41, 2)) 6262 sm_dprintf("multiqueue_cache: %d: \"%s\" cached (%x).\n", 6263 qg->qg_numqueues, relpath, 6264 qg->qg_qpaths[qg->qg_numqueues].qp_subdirs); 6265#if SM_CONF_SHM 6266 qg->qg_qpaths[qg->qg_numqueues].qp_idx = qn; 6267 *phash = hash_q(relpath, *phash); 6268#endif /* SM_CONF_SHM */ 6269 qg->qg_numqueues++; 6270 ++qn; 6271 slotsleft--; 6272 } 6273 (void) closedir(dp); 6274 6275 /* undo damage */ 6276 *delim = '/'; 6277 } 6278 if (qg->qg_numqueues == 0) 6279 { 6280 qg->qg_qpaths = (QPATHS *) xalloc(sizeof(*qg->qg_qpaths)); 6281 6282 /* test path to get warning messages */ 6283 i = safedirpath(qpath, RunAsUid, RunAsGid, NULL, sff, 0, 0); 6284 if (i == ENOENT) 6285 { 6286 syserr("can not opendir(%s)", qpath); 6287 if (tTd(41, 2)) 6288 sm_dprintf("multiqueue_cache: opendir(\"%s\"): %s\n", 6289 qpath, sm_errstring(i)); 6290 ExitStat = EX_CONFIG; 6291 return qn; 6292 } 6293 6294 qg->qg_qpaths[0].qp_subdirs = QP_NOSUB; 6295 qg->qg_numqueues = 1; 6296 6297 /* check subdirs */ 6298#define CHKSUBDIR(name, flag) \ 6299 (void) sm_strlcpyn(subdir, sizeof(subdir), 3, qg->qg_qdir, "/", name); \ 6300 if (chkqdir(subdir, sff)) \ 6301 qg->qg_qpaths[0].qp_subdirs |= flag; \ 6302 else 6303 6304 CHKSUBDIR("qf", QP_SUBQF); 6305 CHKSUBDIR("df", QP_SUBDF); 6306 CHKSUBDIR("xf", QP_SUBXF); 6307 6308 if (qg->qg_qdir[blen - 1] != '\0' && 6309 qg->qg_qdir[blen] != '\0') 6310 { 6311 /* 6312 ** Copy the last component into qpaths and 6313 ** cut off qdir 6314 */ 6315 6316 qg->qg_qpaths[0].qp_name = newstr(qg->qg_qdir + blen); 6317 qg->qg_qdir[blen - 1] = '\0'; 6318 } 6319 else 6320 qg->qg_qpaths[0].qp_name = newstr("."); 6321 6322#if SM_CONF_SHM 6323 qg->qg_qpaths[0].qp_idx = qn; 6324 *phash = hash_q(qg->qg_qpaths[0].qp_name, *phash); 6325#endif /* SM_CONF_SHM */ 6326 ++qn; 6327 } 6328 return qn; 6329} 6330 6331/* 6332** FILESYS_FIND -- find entry in FileSys table, or add new one 6333** 6334** Given the pathname of a directory, determine the file system 6335** in which that directory resides, and return a pointer to the 6336** entry in the FileSys table that describes the file system. 6337** A new entry is added if necessary (and requested). 6338** If the directory does not exist, -1 is returned. 6339** 6340** Parameters: 6341** name -- name of directory (must be persistent!) 6342** path -- pathname of directory (name plus maybe "/df") 6343** add -- add to structure if not found. 6344** 6345** Returns: 6346** >=0: found: index in file system table 6347** <0: some error, i.e., 6348** FSF_TOO_MANY: too many filesystems (-> syserr()) 6349** FSF_STAT_FAIL: can't stat() filesystem (-> syserr()) 6350** FSF_NOT_FOUND: not in list 6351*/ 6352 6353static short filesys_find __P((const char *, const char *, bool)); 6354 6355#define FSF_NOT_FOUND (-1) 6356#define FSF_STAT_FAIL (-2) 6357#define FSF_TOO_MANY (-3) 6358 6359static short 6360filesys_find(name, path, add) 6361 const char *name; 6362 const char *path; 6363 bool add; 6364{ 6365 struct stat st; 6366 short i; 6367 6368 if (stat(path, &st) < 0) 6369 { 6370 syserr("cannot stat queue directory %s", path); 6371 return FSF_STAT_FAIL; 6372 } 6373 for (i = 0; i < NumFileSys; ++i) 6374 { 6375 if (FILE_SYS_DEV(i) == st.st_dev) 6376 { 6377 /* 6378 ** Make sure the file system (FS) name is set: 6379 ** even though the source code indicates that 6380 ** FILE_SYS_DEV() is only set below, it could be 6381 ** set via shared memory, hence we need to perform 6382 ** this check/assignment here. 6383 */ 6384 6385 if (NULL == FILE_SYS_NAME(i)) 6386 FILE_SYS_NAME(i) = name; 6387 return i; 6388 } 6389 } 6390 if (i >= MAXFILESYS) 6391 { 6392 syserr("too many queue file systems (%d max)", MAXFILESYS); 6393 return FSF_TOO_MANY; 6394 } 6395 if (!add) 6396 return FSF_NOT_FOUND; 6397 6398 ++NumFileSys; 6399 FILE_SYS_NAME(i) = name; 6400 FILE_SYS_DEV(i) = st.st_dev; 6401 FILE_SYS_AVAIL(i) = 0; 6402 FILE_SYS_BLKSIZE(i) = 1024; /* avoid divide by zero */ 6403 return i; 6404} 6405 6406/* 6407** FILESYS_SETUP -- set up mapping from queue directories to file systems 6408** 6409** This data structure is used to efficiently check the amount of 6410** free space available in a set of queue directories. 6411** 6412** Parameters: 6413** add -- initialize structure if necessary. 6414** 6415** Returns: 6416** 0: success 6417** <0: some error, i.e., 6418** FSF_NOT_FOUND: not in list 6419** FSF_STAT_FAIL: can't stat() filesystem (-> syserr()) 6420** FSF_TOO_MANY: too many filesystems (-> syserr()) 6421*/ 6422 6423static int filesys_setup __P((bool)); 6424 6425static int 6426filesys_setup(add) 6427 bool add; 6428{ 6429 int i, j; 6430 short fs; 6431 int ret; 6432 6433 ret = 0; 6434 for (i = 0; i < NumQueue && Queue[i] != NULL; i++) 6435 { 6436 for (j = 0; j < Queue[i]->qg_numqueues; ++j) 6437 { 6438 QPATHS *qp = &Queue[i]->qg_qpaths[j]; 6439 char qddf[MAXPATHLEN]; 6440 6441 (void) sm_strlcpyn(qddf, sizeof(qddf), 2, qp->qp_name, 6442 (bitset(QP_SUBDF, qp->qp_subdirs) 6443 ? "/df" : "")); 6444 fs = filesys_find(qp->qp_name, qddf, add); 6445 if (fs >= 0) 6446 qp->qp_fsysidx = fs; 6447 else 6448 qp->qp_fsysidx = 0; 6449 if (fs < ret) 6450 ret = fs; 6451 } 6452 } 6453 return ret; 6454} 6455 6456/* 6457** FILESYS_UPDATE -- update amount of free space on all file systems 6458** 6459** The FileSys table is used to cache the amount of free space 6460** available on all queue directory file systems. 6461** This function updates the cached information if it has expired. 6462** 6463** Parameters: 6464** none. 6465** 6466** Returns: 6467** none. 6468** 6469** Side Effects: 6470** Updates FileSys table. 6471*/ 6472 6473void 6474filesys_update() 6475{ 6476 int i; 6477 long avail, blksize; 6478 time_t now; 6479 static time_t nextupdate = 0; 6480 6481#if SM_CONF_SHM 6482 /* 6483 ** Only the daemon updates the shared memory, i.e., 6484 ** if shared memory is available but the pid is not the 6485 ** one of the daemon, then don't do anything. 6486 */ 6487 6488 if (ShmId != SM_SHM_NO_ID && DaemonPid != CurrentPid) 6489 return; 6490#endif /* SM_CONF_SHM */ 6491 now = curtime(); 6492 if (now < nextupdate) 6493 return; 6494 nextupdate = now + FILESYS_UPDATE_INTERVAL; 6495 for (i = 0; i < NumFileSys; ++i) 6496 { 6497 FILESYS *fs = &FILE_SYS(i); 6498 6499 avail = freediskspace(FILE_SYS_NAME(i), &blksize); 6500 if (avail < 0 || blksize <= 0) 6501 { 6502 if (LogLevel > 5) 6503 sm_syslog(LOG_ERR, NOQID, 6504 "filesys_update failed: %s, fs=%s, avail=%ld, blocksize=%ld", 6505 sm_errstring(errno), 6506 FILE_SYS_NAME(i), avail, blksize); 6507 fs->fs_avail = 0; 6508 fs->fs_blksize = 1024; /* avoid divide by zero */ 6509 nextupdate = now + 2; /* let's do this soon again */ 6510 } 6511 else 6512 { 6513 fs->fs_avail = avail; 6514 fs->fs_blksize = blksize; 6515 } 6516 } 6517} 6518 6519#if _FFR_ANY_FREE_FS 6520/* 6521** FILESYS_FREE -- check whether there is at least one fs with enough space. 6522** 6523** Parameters: 6524** fsize -- file size in bytes 6525** 6526** Returns: 6527** true iff there is one fs with more than fsize bytes free. 6528*/ 6529 6530bool 6531filesys_free(fsize) 6532 long fsize; 6533{ 6534 int i; 6535 6536 if (fsize <= 0) 6537 return true; 6538 for (i = 0; i < NumFileSys; ++i) 6539 { 6540 long needed = 0; 6541 6542 if (FILE_SYS_AVAIL(i) < 0 || FILE_SYS_BLKSIZE(i) <= 0) 6543 continue; 6544 needed += fsize / FILE_SYS_BLKSIZE(i) 6545 + ((fsize % FILE_SYS_BLKSIZE(i) 6546 > 0) ? 1 : 0) 6547 + MinBlocksFree; 6548 if (needed <= FILE_SYS_AVAIL(i)) 6549 return true; 6550 } 6551 return false; 6552} 6553#endif /* _FFR_ANY_FREE_FS */ 6554 6555/* 6556** DISK_STATUS -- show amount of free space in queue directories 6557** 6558** Parameters: 6559** out -- output file pointer. 6560** prefix -- string to output in front of each line. 6561** 6562** Returns: 6563** none. 6564*/ 6565 6566void 6567disk_status(out, prefix) 6568 SM_FILE_T *out; 6569 char *prefix; 6570{ 6571 int i; 6572 long avail, blksize; 6573 long free; 6574 6575 for (i = 0; i < NumFileSys; ++i) 6576 { 6577 avail = freediskspace(FILE_SYS_NAME(i), &blksize); 6578 if (avail >= 0 && blksize > 0) 6579 { 6580 free = (long)((double) avail * 6581 ((double) blksize / 1024)); 6582 } 6583 else 6584 free = -1; 6585 (void) sm_io_fprintf(out, SM_TIME_DEFAULT, 6586 "%s%d/%s/%ld\r\n", 6587 prefix, i, 6588 FILE_SYS_NAME(i), 6589 free); 6590 } 6591} 6592 6593#if SM_CONF_SHM 6594 6595/* 6596** INIT_SEM -- initialize semaphore system 6597** 6598** Parameters: 6599** owner -- is this the owner of semaphores? 6600** 6601** Returns: 6602** none. 6603*/ 6604 6605#if _FFR_USE_SEM_LOCKING 6606#if SM_CONF_SEM 6607static int SemId = -1; /* Semaphore Id */ 6608int SemKey = SM_SEM_KEY; 6609#endif /* SM_CONF_SEM */ 6610#endif /* _FFR_USE_SEM_LOCKING */ 6611 6612static void init_sem __P((bool)); 6613 6614static void 6615init_sem(owner) 6616 bool owner; 6617{ 6618#if _FFR_USE_SEM_LOCKING 6619#if SM_CONF_SEM 6620 SemId = sm_sem_start(SemKey, 1, 0, owner); 6621 if (SemId < 0) 6622 { 6623 sm_syslog(LOG_ERR, NOQID, 6624 "func=init_sem, sem_key=%ld, sm_sem_start=%d, error=%s", 6625 (long) SemKey, SemId, sm_errstring(-SemId)); 6626 return; 6627 } 6628 if (owner && RunAsUid != 0) 6629 { 6630 int r; 6631 6632 r = sm_semsetowner(SemId, RunAsUid, RunAsGid, 0660); 6633 if (r != 0) 6634 sm_syslog(LOG_ERR, NOQID, 6635 "key=%ld, sm_semsetowner=%d, RunAsUid=%d, RunAsGid=%d", 6636 (long) SemKey, r, RunAsUid, RunAsGid); 6637 } 6638#endif /* SM_CONF_SEM */ 6639#endif /* _FFR_USE_SEM_LOCKING */ 6640 return; 6641} 6642 6643/* 6644** STOP_SEM -- stop semaphore system 6645** 6646** Parameters: 6647** owner -- is this the owner of semaphores? 6648** 6649** Returns: 6650** none. 6651*/ 6652 6653static void stop_sem __P((bool)); 6654 6655static void 6656stop_sem(owner) 6657 bool owner; 6658{ 6659#if _FFR_USE_SEM_LOCKING 6660#if SM_CONF_SEM 6661 if (owner && SemId >= 0) 6662 sm_sem_stop(SemId); 6663#endif /* SM_CONF_SEM */ 6664#endif /* _FFR_USE_SEM_LOCKING */ 6665 return; 6666} 6667 6668/* 6669** UPD_QS -- update information about queue when adding/deleting an entry 6670** 6671** Parameters: 6672** e -- envelope. 6673** count -- add/remove entry (+1/0/-1: add/no change/remove) 6674** space -- update the space available as well. 6675** (>0/0/<0: add/no change/remove) 6676** where -- caller (for logging) 6677** 6678** Returns: 6679** none. 6680** 6681** Side Effects: 6682** Modifies available space in filesystem. 6683** Changes number of entries in queue directory. 6684*/ 6685 6686void 6687upd_qs(e, count, space, where) 6688 ENVELOPE *e; 6689 int count; 6690 int space; 6691 char *where; 6692{ 6693 short fidx; 6694 int idx; 6695# if _FFR_USE_SEM_LOCKING 6696 int r; 6697# endif /* _FFR_USE_SEM_LOCKING */ 6698 long s; 6699 6700 if (ShmId == SM_SHM_NO_ID || e == NULL) 6701 return; 6702 if (e->e_qgrp == NOQGRP || e->e_qdir == NOQDIR) 6703 return; 6704 idx = Queue[e->e_qgrp]->qg_qpaths[e->e_qdir].qp_idx; 6705 if (tTd(73,2)) 6706 sm_dprintf("func=upd_qs, count=%d, space=%d, where=%s, idx=%d, entries=%d\n", 6707 count, space, where, idx, QSHM_ENTRIES(idx)); 6708 6709 /* XXX in theory this needs to be protected with a mutex */ 6710 if (QSHM_ENTRIES(idx) >= 0 && count != 0) 6711 { 6712# if _FFR_USE_SEM_LOCKING 6713 r = sm_sem_acq(SemId, 0, 1); 6714# endif /* _FFR_USE_SEM_LOCKING */ 6715 QSHM_ENTRIES(idx) += count; 6716# if _FFR_USE_SEM_LOCKING 6717 if (r >= 0) 6718 r = sm_sem_rel(SemId, 0, 1); 6719# endif /* _FFR_USE_SEM_LOCKING */ 6720 } 6721 6722 fidx = Queue[e->e_qgrp]->qg_qpaths[e->e_qdir].qp_fsysidx; 6723 if (fidx < 0) 6724 return; 6725 6726 /* update available space also? (might be loseqfile) */ 6727 if (space == 0) 6728 return; 6729 6730 /* convert size to blocks; this causes rounding errors */ 6731 s = e->e_msgsize / FILE_SYS_BLKSIZE(fidx); 6732 if (s == 0) 6733 return; 6734 6735 /* XXX in theory this needs to be protected with a mutex */ 6736 if (space > 0) 6737 FILE_SYS_AVAIL(fidx) += s; 6738 else 6739 FILE_SYS_AVAIL(fidx) -= s; 6740 6741} 6742 6743static bool write_key_file __P((char *, long)); 6744static long read_key_file __P((char *, long)); 6745 6746/* 6747** WRITE_KEY_FILE -- record some key into a file. 6748** 6749** Parameters: 6750** keypath -- file name. 6751** key -- key to write. 6752** 6753** Returns: 6754** true iff file could be written. 6755** 6756** Side Effects: 6757** writes file. 6758*/ 6759 6760static bool 6761write_key_file(keypath, key) 6762 char *keypath; 6763 long key; 6764{ 6765 bool ok; 6766 long sff; 6767 SM_FILE_T *keyf; 6768 6769 ok = false; 6770 if (keypath == NULL || *keypath == '\0') 6771 return ok; 6772 sff = SFF_NOLINK|SFF_ROOTOK|SFF_REGONLY|SFF_CREAT; 6773 if (TrustedUid != 0 && RealUid == TrustedUid) 6774 sff |= SFF_OPENASROOT; 6775 keyf = safefopen(keypath, O_WRONLY|O_TRUNC, FileMode, sff); 6776 if (keyf == NULL) 6777 { 6778 sm_syslog(LOG_ERR, NOQID, "unable to write %s: %s", 6779 keypath, sm_errstring(errno)); 6780 } 6781 else 6782 { 6783 if (geteuid() == 0 && RunAsUid != 0) 6784 { 6785# if HASFCHOWN 6786 int fd; 6787 6788 fd = keyf->f_file; 6789 if (fd >= 0 && fchown(fd, RunAsUid, -1) < 0) 6790 { 6791 int err = errno; 6792 6793 sm_syslog(LOG_ALERT, NOQID, 6794 "ownership change on %s to %d failed: %s", 6795 keypath, RunAsUid, sm_errstring(err)); 6796 } 6797# endif /* HASFCHOWN */ 6798 } 6799 ok = sm_io_fprintf(keyf, SM_TIME_DEFAULT, "%ld\n", key) != 6800 SM_IO_EOF; 6801 ok = (sm_io_close(keyf, SM_TIME_DEFAULT) != SM_IO_EOF) && ok; 6802 } 6803 return ok; 6804} 6805 6806/* 6807** READ_KEY_FILE -- read a key from a file. 6808** 6809** Parameters: 6810** keypath -- file name. 6811** key -- default key. 6812** 6813** Returns: 6814** key. 6815*/ 6816 6817static long 6818read_key_file(keypath, key) 6819 char *keypath; 6820 long key; 6821{ 6822 int r; 6823 long sff, n; 6824 SM_FILE_T *keyf; 6825 6826 if (keypath == NULL || *keypath == '\0') 6827 return key; 6828 sff = SFF_NOLINK|SFF_ROOTOK|SFF_REGONLY; 6829 if (RealUid == 0 || (TrustedUid != 0 && RealUid == TrustedUid)) 6830 sff |= SFF_OPENASROOT; 6831 keyf = safefopen(keypath, O_RDONLY, FileMode, sff); 6832 if (keyf == NULL) 6833 { 6834 sm_syslog(LOG_ERR, NOQID, "unable to read %s: %s", 6835 keypath, sm_errstring(errno)); 6836 } 6837 else 6838 { 6839 r = sm_io_fscanf(keyf, SM_TIME_DEFAULT, "%ld", &n); 6840 if (r == 1) 6841 key = n; 6842 (void) sm_io_close(keyf, SM_TIME_DEFAULT); 6843 } 6844 return key; 6845} 6846 6847/* 6848** INIT_SHM -- initialize shared memory structure 6849** 6850** Initialize or attach to shared memory segment. 6851** Currently it is not a fatal error if this doesn't work. 6852** However, it causes us to have a "fallback" storage location 6853** for everything that is supposed to be in the shared memory, 6854** which makes the code slightly ugly. 6855** 6856** Parameters: 6857** qn -- number of queue directories. 6858** owner -- owner of shared memory. 6859** hash -- identifies data that is stored in shared memory. 6860** 6861** Returns: 6862** none. 6863*/ 6864 6865static void init_shm __P((int, bool, unsigned int)); 6866 6867static void 6868init_shm(qn, owner, hash) 6869 int qn; 6870 bool owner; 6871 unsigned int hash; 6872{ 6873 int i; 6874 int count; 6875 int save_errno; 6876 bool keyselect; 6877 6878 PtrFileSys = &FileSys[0]; 6879 PNumFileSys = &Numfilesys; 6880/* if this "key" is specified: select one yourself */ 6881#define SEL_SHM_KEY ((key_t) -1) 6882#define FIRST_SHM_KEY 25 6883 6884 /* This allows us to disable shared memory at runtime. */ 6885 if (ShmKey == 0) 6886 return; 6887 6888 count = 0; 6889 shms = SM_T_SIZE + qn * sizeof(QUEUE_SHM_T); 6890 keyselect = ShmKey == SEL_SHM_KEY; 6891 if (keyselect) 6892 { 6893 if (owner) 6894 ShmKey = FIRST_SHM_KEY; 6895 else 6896 { 6897 errno = 0; 6898 ShmKey = read_key_file(ShmKeyFile, ShmKey); 6899 keyselect = false; 6900 if (ShmKey == SEL_SHM_KEY) 6901 { 6902 save_errno = (errno != 0) ? errno : EINVAL; 6903 goto error; 6904 } 6905 } 6906 } 6907 for (;;) 6908 { 6909 /* allow read/write access for group? */ 6910 Pshm = sm_shmstart(ShmKey, shms, 6911 SHM_R|SHM_W|(SHM_R>>3)|(SHM_W>>3), 6912 &ShmId, owner); 6913 save_errno = errno; 6914 if (Pshm != NULL || !sm_file_exists(save_errno)) 6915 break; 6916 if (++count >= 3) 6917 { 6918 if (keyselect) 6919 { 6920 ++ShmKey; 6921 6922 /* back where we started? */ 6923 if (ShmKey == SEL_SHM_KEY) 6924 break; 6925 continue; 6926 } 6927 break; 6928 } 6929 6930 /* only sleep if we are at the first key */ 6931 if (!keyselect || ShmKey == SEL_SHM_KEY) 6932 sleep(count); 6933 } 6934 if (Pshm != NULL) 6935 { 6936 int *p; 6937 6938 if (keyselect) 6939 (void) write_key_file(ShmKeyFile, (long) ShmKey); 6940 if (owner && RunAsUid != 0) 6941 { 6942 i = sm_shmsetowner(ShmId, RunAsUid, RunAsGid, 0660); 6943 if (i != 0) 6944 sm_syslog(LOG_ERR, NOQID, 6945 "key=%ld, sm_shmsetowner=%d, RunAsUid=%d, RunAsGid=%d", 6946 (long) ShmKey, i, RunAsUid, RunAsGid); 6947 } 6948 p = (int *) Pshm; 6949 if (owner) 6950 { 6951 *p = (int) shms; 6952 *((pid_t *) SHM_OFF_PID(Pshm)) = CurrentPid; 6953 p = (int *) SHM_OFF_TAG(Pshm); 6954 *p = hash; 6955 } 6956 else 6957 { 6958 if (*p != (int) shms) 6959 { 6960 save_errno = EINVAL; 6961 cleanup_shm(false); 6962 goto error; 6963 } 6964 p = (int *) SHM_OFF_TAG(Pshm); 6965 if (*p != (int) hash) 6966 { 6967 save_errno = EINVAL; 6968 cleanup_shm(false); 6969 goto error; 6970 } 6971 6972 /* 6973 ** XXX how to check the pid? 6974 ** Read it from the pid-file? That does 6975 ** not need to exist. 6976 ** We could disable shm if we can't confirm 6977 ** that it is the right one. 6978 */ 6979 } 6980 6981 PtrFileSys = (FILESYS *) OFF_FILE_SYS(Pshm); 6982 PNumFileSys = (int *) OFF_NUM_FILE_SYS(Pshm); 6983 QShm = (QUEUE_SHM_T *) OFF_QUEUE_SHM(Pshm); 6984 PRSATmpCnt = (int *) OFF_RSA_TMP_CNT(Pshm); 6985 *PRSATmpCnt = 0; 6986 if (owner) 6987 { 6988 /* initialize values in shared memory */ 6989 NumFileSys = 0; 6990 for (i = 0; i < qn; i++) 6991 QShm[i].qs_entries = -1; 6992 } 6993 init_sem(owner); 6994 return; 6995 } 6996 error: 6997 if (LogLevel > (owner ? 8 : 11)) 6998 { 6999 sm_syslog(owner ? LOG_ERR : LOG_NOTICE, NOQID, 7000 "can't %s shared memory, key=%ld: %s", 7001 owner ? "initialize" : "attach to", 7002 (long) ShmKey, sm_errstring(save_errno)); 7003 } 7004} 7005#endif /* SM_CONF_SHM */ 7006 7007 7008/* 7009** SETUP_QUEUES -- set up all queue groups 7010** 7011** Parameters: 7012** owner -- owner of shared memory? 7013** 7014** Returns: 7015** none. 7016** 7017#if SM_CONF_SHM 7018** Side Effects: 7019** attaches shared memory. 7020#endif * SM_CONF_SHM * 7021*/ 7022 7023void 7024setup_queues(owner) 7025 bool owner; 7026{ 7027 int i, qn, len; 7028 unsigned int hashval; 7029 time_t now; 7030 char basedir[MAXPATHLEN]; 7031 struct stat st; 7032 7033 /* 7034 ** Determine basedir for all queue directories. 7035 ** All queue directories must be (first level) subdirectories 7036 ** of the basedir. The basedir is the QueueDir 7037 ** without wildcards, but with trailing / 7038 */ 7039 7040 hashval = 0; 7041 errno = 0; 7042 len = sm_strlcpy(basedir, QueueDir, sizeof(basedir)); 7043 7044 /* Provide space for trailing '/' */ 7045 if (len >= sizeof(basedir) - 1) 7046 { 7047 syserr("QueueDirectory: path too long: %d, max %d", 7048 len, (int) sizeof(basedir) - 1); 7049 ExitStat = EX_CONFIG; 7050 return; 7051 } 7052 SM_ASSERT(len > 0); 7053 if (basedir[len - 1] == '*') 7054 { 7055 char *cp; 7056 7057 cp = SM_LAST_DIR_DELIM(basedir); 7058 if (cp == NULL) 7059 { 7060 syserr("QueueDirectory: can not wildcard relative path \"%s\"", 7061 QueueDir); 7062 if (tTd(41, 2)) 7063 sm_dprintf("setup_queues: \"%s\": Can not wildcard relative path.\n", 7064 QueueDir); 7065 ExitStat = EX_CONFIG; 7066 return; 7067 } 7068 7069 /* cut off wildcard pattern */ 7070 *++cp = '\0'; 7071 len = cp - basedir; 7072 } 7073 else if (!SM_IS_DIR_DELIM(basedir[len - 1])) 7074 { 7075 /* append trailing slash since it is a directory */ 7076 basedir[len] = '/'; 7077 basedir[++len] = '\0'; 7078 } 7079 7080 /* len counts up to the last directory delimiter */ 7081 SM_ASSERT(basedir[len - 1] == '/'); 7082 7083 if (chdir(basedir) < 0) 7084 { 7085 int save_errno = errno; 7086 7087 syserr("can not chdir(%s)", basedir); 7088 if (save_errno == EACCES) 7089 (void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT, 7090 "Program mode requires special privileges, e.g., root or TrustedUser.\n"); 7091 if (tTd(41, 2)) 7092 sm_dprintf("setup_queues: \"%s\": %s\n", 7093 basedir, sm_errstring(errno)); 7094 ExitStat = EX_CONFIG; 7095 return; 7096 } 7097#if SM_CONF_SHM 7098 hashval = hash_q(basedir, hashval); 7099#endif /* SM_CONF_SHM */ 7100 7101 /* initialize for queue runs */ 7102 DoQueueRun = false; 7103 now = curtime(); 7104 for (i = 0; i < NumQueue && Queue[i] != NULL; i++) 7105 Queue[i]->qg_nextrun = now; 7106 7107 7108 if (UseMSP && OpMode != MD_TEST) 7109 { 7110 long sff = SFF_CREAT; 7111 7112 if (stat(".", &st) < 0) 7113 { 7114 syserr("can not stat(%s)", basedir); 7115 if (tTd(41, 2)) 7116 sm_dprintf("setup_queues: \"%s\": %s\n", 7117 basedir, sm_errstring(errno)); 7118 ExitStat = EX_CONFIG; 7119 return; 7120 } 7121 if (RunAsUid == 0) 7122 sff |= SFF_ROOTOK; 7123 7124 /* 7125 ** Check queue directory permissions. 7126 ** Can we write to a group writable queue directory? 7127 */ 7128 7129 if (bitset(S_IWGRP, QueueFileMode) && 7130 bitset(S_IWGRP, st.st_mode) && 7131 safefile(" ", RunAsUid, RunAsGid, RunAsUserName, sff, 7132 QueueFileMode, NULL) != 0) 7133 { 7134 syserr("can not write to queue directory %s (RunAsGid=%d, required=%d)", 7135 basedir, (int) RunAsGid, (int) st.st_gid); 7136 } 7137 if (bitset(S_IWOTH|S_IXOTH, st.st_mode)) 7138 { 7139#if _FFR_MSP_PARANOIA 7140 syserr("dangerous permissions=%o on queue directory %s", 7141 (int) st.st_mode, basedir); 7142#else /* _FFR_MSP_PARANOIA */ 7143 if (LogLevel > 0) 7144 sm_syslog(LOG_ERR, NOQID, 7145 "dangerous permissions=%o on queue directory %s", 7146 (int) st.st_mode, basedir); 7147#endif /* _FFR_MSP_PARANOIA */ 7148 } 7149#if _FFR_MSP_PARANOIA 7150 if (NumQueue > 1) 7151 syserr("can not use multiple queues for MSP"); 7152#endif /* _FFR_MSP_PARANOIA */ 7153 } 7154 7155 /* initial number of queue directories */ 7156 qn = 0; 7157 for (i = 0; i < NumQueue && Queue[i] != NULL; i++) 7158 qn = multiqueue_cache(basedir, len, Queue[i], qn, &hashval); 7159 7160#if SM_CONF_SHM 7161 init_shm(qn, owner, hashval); 7162 i = filesys_setup(owner || ShmId == SM_SHM_NO_ID); 7163 if (i == FSF_NOT_FOUND) 7164 { 7165 /* 7166 ** We didn't get the right filesystem data 7167 ** This may happen if we don't have the right shared memory. 7168 ** So let's do this without shared memory. 7169 */ 7170 7171 SM_ASSERT(!owner); 7172 cleanup_shm(false); /* release shared memory */ 7173 i = filesys_setup(false); 7174 if (i < 0) 7175 syserr("filesys_setup failed twice, result=%d", i); 7176 else if (LogLevel > 8) 7177 sm_syslog(LOG_WARNING, NOQID, 7178 "shared memory does not contain expected data, ignored"); 7179 } 7180#else /* SM_CONF_SHM */ 7181 i = filesys_setup(true); 7182#endif /* SM_CONF_SHM */ 7183 if (i < 0) 7184 ExitStat = EX_CONFIG; 7185} 7186 7187#if SM_CONF_SHM 7188/* 7189** CLEANUP_SHM -- do some cleanup work for shared memory etc 7190** 7191** Parameters: 7192** owner -- owner of shared memory? 7193** 7194** Returns: 7195** none. 7196** 7197** Side Effects: 7198** detaches shared memory. 7199*/ 7200 7201void 7202cleanup_shm(owner) 7203 bool owner; 7204{ 7205 if (ShmId != SM_SHM_NO_ID) 7206 { 7207 if (sm_shmstop(Pshm, ShmId, owner) < 0 && LogLevel > 8) 7208 sm_syslog(LOG_INFO, NOQID, "sm_shmstop failed=%s", 7209 sm_errstring(errno)); 7210 Pshm = NULL; 7211 ShmId = SM_SHM_NO_ID; 7212 } 7213 stop_sem(owner); 7214} 7215#endif /* SM_CONF_SHM */ 7216 7217/* 7218** CLEANUP_QUEUES -- do some cleanup work for queues 7219** 7220** Parameters: 7221** none. 7222** 7223** Returns: 7224** none. 7225** 7226*/ 7227 7228void 7229cleanup_queues() 7230{ 7231 sync_queue_time(); 7232} 7233/* 7234** SET_DEF_QUEUEVAL -- set default values for a queue group. 7235** 7236** Parameters: 7237** qg -- queue group 7238** all -- set all values (true for default group)? 7239** 7240** Returns: 7241** none. 7242** 7243** Side Effects: 7244** sets default values for the queue group. 7245*/ 7246 7247void 7248set_def_queueval(qg, all) 7249 QUEUEGRP *qg; 7250 bool all; 7251{ 7252 if (bitnset(QD_DEFINED, qg->qg_flags)) 7253 return; 7254 if (all) 7255 qg->qg_qdir = QueueDir; 7256#if _FFR_QUEUE_GROUP_SORTORDER 7257 qg->qg_sortorder = QueueSortOrder; 7258#endif /* _FFR_QUEUE_GROUP_SORTORDER */ 7259 qg->qg_maxqrun = all ? MaxRunnersPerQueue : -1; 7260 qg->qg_nice = NiceQueueRun; 7261} 7262/* 7263** MAKEQUEUE -- define a new queue. 7264** 7265** Parameters: 7266** line -- description of queue. This is in labeled fields. 7267** The fields are: 7268** F -- the flags associated with the queue 7269** I -- the interval between running the queue 7270** J -- the maximum # of jobs in work list 7271** [M -- the maximum # of jobs in a queue run] 7272** N -- the niceness at which to run 7273** P -- the path to the queue 7274** S -- the queue sorting order 7275** R -- number of parallel queue runners 7276** r -- max recipients per envelope 7277** The first word is the canonical name of the queue. 7278** qdef -- this is a 'Q' definition from .cf 7279** 7280** Returns: 7281** none. 7282** 7283** Side Effects: 7284** enters the queue into the queue table. 7285*/ 7286 7287void 7288makequeue(line, qdef) 7289 char *line; 7290 bool qdef; 7291{ 7292 register char *p; 7293 register QUEUEGRP *qg; 7294 register STAB *s; 7295 int i; 7296 char fcode; 7297 7298 /* allocate a queue and set up defaults */ 7299 qg = (QUEUEGRP *) xalloc(sizeof(*qg)); 7300 memset((char *) qg, '\0', sizeof(*qg)); 7301 7302 if (line[0] == '\0') 7303 { 7304 syserr("name required for queue"); 7305 return; 7306 } 7307 7308 /* collect the queue name */ 7309 for (p = line; 7310 *p != '\0' && *p != ',' && !(isascii(*p) && isspace(*p)); 7311 p++) 7312 continue; 7313 if (*p != '\0') 7314 *p++ = '\0'; 7315 qg->qg_name = newstr(line); 7316 7317 /* set default values, can be overridden below */ 7318 set_def_queueval(qg, false); 7319 7320 /* now scan through and assign info from the fields */ 7321 while (*p != '\0') 7322 { 7323 auto char *delimptr; 7324 7325 while (*p != '\0' && 7326 (*p == ',' || (isascii(*p) && isspace(*p)))) 7327 p++; 7328 7329 /* p now points to field code */ 7330 fcode = *p; 7331 while (*p != '\0' && *p != '=' && *p != ',') 7332 p++; 7333 if (*p++ != '=') 7334 { 7335 syserr("queue %s: `=' expected", qg->qg_name); 7336 return; 7337 } 7338 while (isascii(*p) && isspace(*p)) 7339 p++; 7340 7341 /* p now points to the field body */ 7342 p = munchstring(p, &delimptr, ','); 7343 7344 /* install the field into the queue struct */ 7345 switch (fcode) 7346 { 7347 case 'P': /* pathname */ 7348 if (*p == '\0') 7349 syserr("queue %s: empty path name", 7350 qg->qg_name); 7351 else 7352 qg->qg_qdir = newstr(p); 7353 break; 7354 7355 case 'F': /* flags */ 7356 for (; *p != '\0'; p++) 7357 if (!(isascii(*p) && isspace(*p))) 7358 setbitn(*p, qg->qg_flags); 7359 break; 7360 7361 /* 7362 ** Do we need two intervals here: 7363 ** One for persistent queue runners, 7364 ** one for "normal" queue runs? 7365 */ 7366 7367 case 'I': /* interval between running the queue */ 7368 qg->qg_queueintvl = convtime(p, 'm'); 7369 break; 7370 7371 case 'N': /* run niceness */ 7372 qg->qg_nice = atoi(p); 7373 break; 7374 7375 case 'R': /* maximum # of runners for the group */ 7376 i = atoi(p); 7377 7378 /* can't have more runners than allowed total */ 7379 if (MaxQueueChildren > 0 && i > MaxQueueChildren) 7380 { 7381 qg->qg_maxqrun = MaxQueueChildren; 7382 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 7383 "Q=%s: R=%d exceeds MaxQueueChildren=%d, set to MaxQueueChildren\n", 7384 qg->qg_name, i, 7385 MaxQueueChildren); 7386 } 7387 else 7388 qg->qg_maxqrun = i; 7389 break; 7390 7391 case 'J': /* maximum # of jobs in work list */ 7392 qg->qg_maxlist = atoi(p); 7393 break; 7394 7395 case 'r': /* max recipients per envelope */ 7396 qg->qg_maxrcpt = atoi(p); 7397 break; 7398 7399#if _FFR_QUEUE_GROUP_SORTORDER 7400 case 'S': /* queue sorting order */ 7401 switch (*p) 7402 { 7403 case 'h': /* Host first */ 7404 case 'H': 7405 qg->qg_sortorder = QSO_BYHOST; 7406 break; 7407 7408 case 'p': /* Priority order */ 7409 case 'P': 7410 qg->qg_sortorder = QSO_BYPRIORITY; 7411 break; 7412 7413 case 't': /* Submission time */ 7414 case 'T': 7415 qg->qg_sortorder = QSO_BYTIME; 7416 break; 7417 7418 case 'f': /* File name */ 7419 case 'F': 7420 qg->qg_sortorder = QSO_BYFILENAME; 7421 break; 7422 7423 case 'm': /* Modification time */ 7424 case 'M': 7425 qg->qg_sortorder = QSO_BYMODTIME; 7426 break; 7427 7428 case 'r': /* Random */ 7429 case 'R': 7430 qg->qg_sortorder = QSO_RANDOM; 7431 break; 7432 7433# if _FFR_RHS 7434 case 's': /* Shuffled host name */ 7435 case 'S': 7436 qg->qg_sortorder = QSO_BYSHUFFLE; 7437 break; 7438# endif /* _FFR_RHS */ 7439 7440 case 'n': /* none */ 7441 case 'N': 7442 qg->qg_sortorder = QSO_NONE; 7443 break; 7444 7445 default: 7446 syserr("Invalid queue sort order \"%s\"", p); 7447 } 7448 break; 7449#endif /* _FFR_QUEUE_GROUP_SORTORDER */ 7450 7451 default: 7452 syserr("Q%s: unknown queue equate %c=", 7453 qg->qg_name, fcode); 7454 break; 7455 } 7456 7457 p = delimptr; 7458 } 7459 7460#if !HASNICE 7461 if (qg->qg_nice != NiceQueueRun) 7462 { 7463 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 7464 "Q%s: Warning: N= set on system that doesn't support nice()\n", 7465 qg->qg_name); 7466 } 7467#endif /* !HASNICE */ 7468 7469 /* do some rationality checking */ 7470 if (NumQueue >= MAXQUEUEGROUPS) 7471 { 7472 syserr("too many queue groups defined (%d max)", 7473 MAXQUEUEGROUPS); 7474 return; 7475 } 7476 7477 if (qg->qg_qdir == NULL) 7478 { 7479 if (QueueDir == NULL || *QueueDir == '\0') 7480 { 7481 syserr("QueueDir must be defined before queue groups"); 7482 return; 7483 } 7484 qg->qg_qdir = newstr(QueueDir); 7485 } 7486 7487 if (qg->qg_maxqrun > 1 && !bitnset(QD_FORK, qg->qg_flags)) 7488 { 7489 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 7490 "Warning: Q=%s: R=%d: multiple queue runners specified\n\tbut flag '%c' is not set\n", 7491 qg->qg_name, qg->qg_maxqrun, QD_FORK); 7492 } 7493 7494 /* enter the queue into the symbol table */ 7495 if (tTd(37, 8)) 7496 sm_syslog(LOG_INFO, NOQID, 7497 "Adding %s to stab, path: %s", qg->qg_name, 7498 qg->qg_qdir); 7499 s = stab(qg->qg_name, ST_QUEUE, ST_ENTER); 7500 if (s->s_quegrp != NULL) 7501 { 7502 i = s->s_quegrp->qg_index; 7503 7504 /* XXX what about the pointers inside this struct? */ 7505 sm_free(s->s_quegrp); /* XXX */ 7506 } 7507 else 7508 i = NumQueue++; 7509 Queue[i] = s->s_quegrp = qg; 7510 qg->qg_index = i; 7511 7512 /* set default value for max queue runners */ 7513 if (qg->qg_maxqrun < 0) 7514 { 7515 if (MaxRunnersPerQueue > 0) 7516 qg->qg_maxqrun = MaxRunnersPerQueue; 7517 else 7518 qg->qg_maxqrun = 1; 7519 } 7520 if (qdef) 7521 setbitn(QD_DEFINED, qg->qg_flags); 7522} 7523#if 0 7524/* 7525** HASHFQN -- calculate a hash value for a fully qualified host name 7526** 7527** Arguments: 7528** fqn -- an all lower-case host.domain string 7529** buckets -- the number of buckets (queue directories) 7530** 7531** Returns: 7532** a bucket number (signed integer) 7533** -1 on error 7534** 7535** Contributed by Exactis.com, Inc. 7536*/ 7537 7538int 7539hashfqn(fqn, buckets) 7540 register char *fqn; 7541 int buckets; 7542{ 7543 register char *p; 7544 register int h = 0, hash, cnt; 7545 7546 if (fqn == NULL) 7547 return -1; 7548 7549 /* 7550 ** A variation on the gdb hash 7551 ** This is the best as of Feb 19, 1996 --bcx 7552 */ 7553 7554 p = fqn; 7555 h = 0x238F13AF * strlen(p); 7556 for (cnt = 0; *p != 0; ++p, cnt++) 7557 { 7558 h = (h + (*p << (cnt * 5 % 24))) & 0x7FFFFFFF; 7559 } 7560 h = (1103515243 * h + 12345) & 0x7FFFFFFF; 7561 if (buckets < 2) 7562 hash = 0; 7563 else 7564 hash = (h % buckets); 7565 7566 return hash; 7567} 7568#endif /* 0 */ 7569 7570/* 7571** A structure for sorting Queue according to maxqrun without 7572** screwing up Queue itself. 7573*/ 7574 7575struct sortqgrp 7576{ 7577 int sg_idx; /* original index */ 7578 int sg_maxqrun; /* max queue runners */ 7579}; 7580typedef struct sortqgrp SORTQGRP_T; 7581static int cmpidx __P((const void *, const void *)); 7582 7583static int 7584cmpidx(a, b) 7585 const void *a; 7586 const void *b; 7587{ 7588 /* The sort is highest to lowest, so the comparison is reversed */ 7589 if (((SORTQGRP_T *)a)->sg_maxqrun < ((SORTQGRP_T *)b)->sg_maxqrun) 7590 return 1; 7591 else if (((SORTQGRP_T *)a)->sg_maxqrun > ((SORTQGRP_T *)b)->sg_maxqrun) 7592 return -1; 7593 else 7594 return 0; 7595} 7596 7597/* 7598** MAKEWORKGROUP -- balance queue groups into work groups per MaxQueueChildren 7599** 7600** Take the now defined queue groups and assign them to work groups. 7601** This is done to balance out the number of concurrently active 7602** queue runners such that MaxQueueChildren is not exceeded. This may 7603** result in more than one queue group per work group. In such a case 7604** the number of running queue groups in that work group will have no 7605** more than the work group maximum number of runners (a "fair" portion 7606** of MaxQueueRunners). All queue groups within a work group will get a 7607** chance at running. 7608** 7609** Parameters: 7610** none. 7611** 7612** Returns: 7613** nothing. 7614** 7615** Side Effects: 7616** Sets up WorkGrp structure. 7617*/ 7618 7619void 7620makeworkgroups() 7621{ 7622 int i, j, total_runners, dir, h; 7623 SORTQGRP_T si[MAXQUEUEGROUPS + 1]; 7624 7625 total_runners = 0; 7626 if (NumQueue == 1 && strcmp(Queue[0]->qg_name, "mqueue") == 0) 7627 { 7628 /* 7629 ** There is only the "mqueue" queue group (a default) 7630 ** containing all of the queues. We want to provide to 7631 ** this queue group the maximum allowable queue runners. 7632 ** To match older behavior (8.10/8.11) we'll try for 7633 ** 1 runner per queue capping it at MaxQueueChildren. 7634 ** So if there are N queues, then there will be N runners 7635 ** for the "mqueue" queue group (where N is kept less than 7636 ** MaxQueueChildren). 7637 */ 7638 7639 NumWorkGroups = 1; 7640 WorkGrp[0].wg_numqgrp = 1; 7641 WorkGrp[0].wg_qgs = (QUEUEGRP **) xalloc(sizeof(QUEUEGRP *)); 7642 WorkGrp[0].wg_qgs[0] = Queue[0]; 7643 if (MaxQueueChildren > 0 && 7644 Queue[0]->qg_numqueues > MaxQueueChildren) 7645 WorkGrp[0].wg_runners = MaxQueueChildren; 7646 else 7647 WorkGrp[0].wg_runners = Queue[0]->qg_numqueues; 7648 7649 Queue[0]->qg_wgrp = 0; 7650 7651 /* can't have more runners than allowed total */ 7652 if (MaxQueueChildren > 0 && 7653 Queue[0]->qg_maxqrun > MaxQueueChildren) 7654 Queue[0]->qg_maxqrun = MaxQueueChildren; 7655 WorkGrp[0].wg_maxact = Queue[0]->qg_maxqrun; 7656 WorkGrp[0].wg_lowqintvl = Queue[0]->qg_queueintvl; 7657 return; 7658 } 7659 7660 for (i = 0; i < NumQueue; i++) 7661 { 7662 si[i].sg_maxqrun = Queue[i]->qg_maxqrun; 7663 si[i].sg_idx = i; 7664 } 7665 qsort(si, NumQueue, sizeof(si[0]), cmpidx); 7666 7667 NumWorkGroups = 0; 7668 for (i = 0; i < NumQueue; i++) 7669 { 7670 total_runners += si[i].sg_maxqrun; 7671 if (MaxQueueChildren <= 0 || total_runners <= MaxQueueChildren) 7672 NumWorkGroups++; 7673 else 7674 break; 7675 } 7676 7677 if (NumWorkGroups < 1) 7678 NumWorkGroups = 1; /* gotta have one at least */ 7679 else if (NumWorkGroups > MAXWORKGROUPS) 7680 NumWorkGroups = MAXWORKGROUPS; /* the limit */ 7681 7682 /* 7683 ** We now know the number of work groups to pack the queue groups 7684 ** into. The queue groups in 'Queue' are sorted from highest 7685 ** to lowest for the number of runners per queue group. 7686 ** We put the queue groups with the largest number of runners 7687 ** into work groups first. Then the smaller ones are fitted in 7688 ** where it looks best. 7689 */ 7690 7691 j = 0; 7692 dir = 1; 7693 for (i = 0; i < NumQueue; i++) 7694 { 7695 /* a to-and-fro packing scheme, continue from last position */ 7696 if (j >= NumWorkGroups) 7697 { 7698 dir = -1; 7699 j = NumWorkGroups - 1; 7700 } 7701 else if (j < 0) 7702 { 7703 j = 0; 7704 dir = 1; 7705 } 7706 7707 if (WorkGrp[j].wg_qgs == NULL) 7708 WorkGrp[j].wg_qgs = (QUEUEGRP **)sm_malloc(sizeof(QUEUEGRP *) * 7709 (WorkGrp[j].wg_numqgrp + 1)); 7710 else 7711 WorkGrp[j].wg_qgs = (QUEUEGRP **)sm_realloc(WorkGrp[j].wg_qgs, 7712 sizeof(QUEUEGRP *) * 7713 (WorkGrp[j].wg_numqgrp + 1)); 7714 if (WorkGrp[j].wg_qgs == NULL) 7715 { 7716 syserr("!cannot allocate memory for work queues, need %d bytes", 7717 (int) (sizeof(QUEUEGRP *) * 7718 (WorkGrp[j].wg_numqgrp + 1))); 7719 } 7720 7721 h = si[i].sg_idx; 7722 WorkGrp[j].wg_qgs[WorkGrp[j].wg_numqgrp] = Queue[h]; 7723 WorkGrp[j].wg_numqgrp++; 7724 WorkGrp[j].wg_runners += Queue[h]->qg_maxqrun; 7725 Queue[h]->qg_wgrp = j; 7726 7727 if (WorkGrp[j].wg_maxact == 0) 7728 { 7729 /* can't have more runners than allowed total */ 7730 if (MaxQueueChildren > 0 && 7731 Queue[h]->qg_maxqrun > MaxQueueChildren) 7732 Queue[h]->qg_maxqrun = MaxQueueChildren; 7733 WorkGrp[j].wg_maxact = Queue[h]->qg_maxqrun; 7734 } 7735 7736 /* 7737 ** XXX: must wg_lowqintvl be the GCD? 7738 ** qg1: 2m, qg2: 3m, minimum: 2m, when do queue runs for 7739 ** qg2 occur? 7740 */ 7741 7742 /* keep track of the lowest interval for a persistent runner */ 7743 if (Queue[h]->qg_queueintvl > 0 && 7744 WorkGrp[j].wg_lowqintvl < Queue[h]->qg_queueintvl) 7745 WorkGrp[j].wg_lowqintvl = Queue[h]->qg_queueintvl; 7746 j += dir; 7747 } 7748 if (tTd(41, 9)) 7749 { 7750 for (i = 0; i < NumWorkGroups; i++) 7751 { 7752 sm_dprintf("Workgroup[%d]=", i); 7753 for (j = 0; j < WorkGrp[i].wg_numqgrp; j++) 7754 { 7755 sm_dprintf("%s, ", 7756 WorkGrp[i].wg_qgs[j]->qg_name); 7757 } 7758 sm_dprintf("\n"); 7759 } 7760 } 7761} 7762 7763/* 7764** DUP_DF -- duplicate envelope data file 7765** 7766** Copy the data file from the 'old' envelope to the 'new' envelope 7767** in the most efficient way possible. 7768** 7769** Create a hard link from the 'old' data file to the 'new' data file. 7770** If the old and new queue directories are on different file systems, 7771** then the new data file link is created in the old queue directory, 7772** and the new queue file will contain a 'd' record pointing to the 7773** directory containing the new data file. 7774** 7775** Parameters: 7776** old -- old envelope. 7777** new -- new envelope. 7778** 7779** Results: 7780** Returns true on success, false on failure. 7781** 7782** Side Effects: 7783** On success, the new data file is created. 7784** On fatal failure, EF_FATALERRS is set in old->e_flags. 7785*/ 7786 7787static bool dup_df __P((ENVELOPE *, ENVELOPE *)); 7788 7789static bool 7790dup_df(old, new) 7791 ENVELOPE *old; 7792 ENVELOPE *new; 7793{ 7794 int ofs, nfs, r; 7795 char opath[MAXPATHLEN]; 7796 char npath[MAXPATHLEN]; 7797 7798 if (!bitset(EF_HAS_DF, old->e_flags)) 7799 { 7800 /* 7801 ** this can happen if: SuperSafe != True 7802 ** and a bounce mail is sent that is split. 7803 */ 7804 7805 queueup(old, false, true); 7806 } 7807 SM_REQUIRE(ISVALIDQGRP(old->e_qgrp) && ISVALIDQDIR(old->e_qdir)); 7808 SM_REQUIRE(ISVALIDQGRP(new->e_qgrp) && ISVALIDQDIR(new->e_qdir)); 7809 7810 (void) sm_strlcpy(opath, queuename(old, DATAFL_LETTER), sizeof(opath)); 7811 (void) sm_strlcpy(npath, queuename(new, DATAFL_LETTER), sizeof(npath)); 7812 7813 if (old->e_dfp != NULL) 7814 { 7815 r = sm_io_setinfo(old->e_dfp, SM_BF_COMMIT, NULL); 7816 if (r < 0 && errno != EINVAL) 7817 { 7818 syserr("@can't commit %s", opath); 7819 old->e_flags |= EF_FATALERRS; 7820 return false; 7821 } 7822 } 7823 7824 /* 7825 ** Attempt to create a hard link, if we think both old and new 7826 ** are on the same file system, otherwise copy the file. 7827 ** 7828 ** Don't waste time attempting a hard link unless old and new 7829 ** are on the same file system. 7830 */ 7831 7832 SM_REQUIRE(ISVALIDQGRP(old->e_dfqgrp) && ISVALIDQDIR(old->e_dfqdir)); 7833 SM_REQUIRE(ISVALIDQGRP(new->e_dfqgrp) && ISVALIDQDIR(new->e_dfqdir)); 7834 7835 ofs = Queue[old->e_dfqgrp]->qg_qpaths[old->e_dfqdir].qp_fsysidx; 7836 nfs = Queue[new->e_dfqgrp]->qg_qpaths[new->e_dfqdir].qp_fsysidx; 7837 if (FILE_SYS_DEV(ofs) == FILE_SYS_DEV(nfs)) 7838 { 7839 if (link(opath, npath) == 0) 7840 { 7841 new->e_flags |= EF_HAS_DF; 7842 SYNC_DIR(npath, true); 7843 return true; 7844 } 7845 goto error; 7846 } 7847 7848 /* 7849 ** Can't link across queue directories, so try to create a hard 7850 ** link in the same queue directory as the old df file. 7851 ** The qf file will refer to the new df file using a 'd' record. 7852 */ 7853 7854 new->e_dfqgrp = old->e_dfqgrp; 7855 new->e_dfqdir = old->e_dfqdir; 7856 (void) sm_strlcpy(npath, queuename(new, DATAFL_LETTER), sizeof(npath)); 7857 if (link(opath, npath) == 0) 7858 { 7859 new->e_flags |= EF_HAS_DF; 7860 SYNC_DIR(npath, true); 7861 return true; 7862 } 7863 7864 error: 7865 if (LogLevel > 0) 7866 sm_syslog(LOG_ERR, old->e_id, 7867 "dup_df: can't link %s to %s, error=%s, envelope splitting failed", 7868 opath, npath, sm_errstring(errno)); 7869 return false; 7870} 7871 7872/* 7873** SPLIT_ENV -- Allocate a new envelope based on a given envelope. 7874** 7875** Parameters: 7876** e -- envelope. 7877** sendqueue -- sendqueue for new envelope. 7878** qgrp -- index of queue group. 7879** qdir -- queue directory. 7880** 7881** Results: 7882** new envelope. 7883** 7884*/ 7885 7886static ENVELOPE *split_env __P((ENVELOPE *, ADDRESS *, int, int)); 7887 7888static ENVELOPE * 7889split_env(e, sendqueue, qgrp, qdir) 7890 ENVELOPE *e; 7891 ADDRESS *sendqueue; 7892 int qgrp; 7893 int qdir; 7894{ 7895 ENVELOPE *ee; 7896 7897 ee = (ENVELOPE *) sm_rpool_malloc_x(e->e_rpool, sizeof(*ee)); 7898 STRUCTCOPY(*e, *ee); 7899 ee->e_message = NULL; /* XXX use original message? */ 7900 ee->e_id = NULL; 7901 assign_queueid(ee); 7902 ee->e_sendqueue = sendqueue; 7903 ee->e_flags &= ~(EF_INQUEUE|EF_CLRQUEUE|EF_FATALERRS 7904 |EF_SENDRECEIPT|EF_RET_PARAM|EF_HAS_DF); 7905 ee->e_flags |= EF_NORECEIPT; /* XXX really? */ 7906 ee->e_from.q_state = QS_SENDER; 7907 ee->e_dfp = NULL; 7908 ee->e_lockfp = NULL; 7909 if (e->e_xfp != NULL) 7910 ee->e_xfp = sm_io_dup(e->e_xfp); 7911 7912 /* failed to dup e->e_xfp, start a new transcript */ 7913 if (ee->e_xfp == NULL) 7914 openxscript(ee); 7915 7916 ee->e_qgrp = ee->e_dfqgrp = qgrp; 7917 ee->e_qdir = ee->e_dfqdir = qdir; 7918 ee->e_errormode = EM_MAIL; 7919 ee->e_statmsg = NULL; 7920 if (e->e_quarmsg != NULL) 7921 ee->e_quarmsg = sm_rpool_strdup_x(ee->e_rpool, 7922 e->e_quarmsg); 7923 7924 /* 7925 ** XXX Not sure if this copying is necessary. 7926 ** sendall() does this copying, but I (dm) don't know if that is 7927 ** because of the storage management discipline we were using 7928 ** before rpools were introduced, or if it is because these lists 7929 ** can be modified later. 7930 */ 7931 7932 ee->e_header = copyheader(e->e_header, ee->e_rpool); 7933 ee->e_errorqueue = copyqueue(e->e_errorqueue, ee->e_rpool); 7934 7935 return ee; 7936} 7937 7938/* return values from split functions, check also below! */ 7939#define SM_SPLIT_FAIL (0) 7940#define SM_SPLIT_NONE (1) 7941#define SM_SPLIT_NEW(n) (1 + (n)) 7942 7943/* 7944** SPLIT_ACROSS_QUEUE_GROUPS 7945** 7946** This function splits an envelope across multiple queue groups 7947** based on the queue group of each recipient. 7948** 7949** Parameters: 7950** e -- envelope. 7951** 7952** Results: 7953** SM_SPLIT_FAIL on failure 7954** SM_SPLIT_NONE if no splitting occurred, 7955** or 1 + the number of additional envelopes created. 7956** 7957** Side Effects: 7958** On success, e->e_sibling points to a list of zero or more 7959** additional envelopes, and the associated data files exist 7960** on disk. But the queue files are not created. 7961** 7962** On failure, e->e_sibling is not changed. 7963** The order of recipients in e->e_sendqueue is permuted. 7964** Abandoned data files for additional envelopes that failed 7965** to be created may exist on disk. 7966*/ 7967 7968static int q_qgrp_compare __P((const void *, const void *)); 7969static int e_filesys_compare __P((const void *, const void *)); 7970 7971static int 7972q_qgrp_compare(p1, p2) 7973 const void *p1; 7974 const void *p2; 7975{ 7976 ADDRESS **pq1 = (ADDRESS **) p1; 7977 ADDRESS **pq2 = (ADDRESS **) p2; 7978 7979 return (*pq1)->q_qgrp - (*pq2)->q_qgrp; 7980} 7981 7982static int 7983e_filesys_compare(p1, p2) 7984 const void *p1; 7985 const void *p2; 7986{ 7987 ENVELOPE **pe1 = (ENVELOPE **) p1; 7988 ENVELOPE **pe2 = (ENVELOPE **) p2; 7989 int fs1, fs2; 7990 7991 fs1 = Queue[(*pe1)->e_qgrp]->qg_qpaths[(*pe1)->e_qdir].qp_fsysidx; 7992 fs2 = Queue[(*pe2)->e_qgrp]->qg_qpaths[(*pe2)->e_qdir].qp_fsysidx; 7993 if (FILE_SYS_DEV(fs1) < FILE_SYS_DEV(fs2)) 7994 return -1; 7995 if (FILE_SYS_DEV(fs1) > FILE_SYS_DEV(fs2)) 7996 return 1; 7997 return 0; 7998} 7999 8000static int split_across_queue_groups __P((ENVELOPE *)); 8001static int 8002split_across_queue_groups(e) 8003 ENVELOPE *e; 8004{ 8005 int naddrs, nsplits, i; 8006 bool changed; 8007 char **pvp; 8008 ADDRESS *q, **addrs; 8009 ENVELOPE *ee, *es; 8010 ENVELOPE *splits[MAXQUEUEGROUPS]; 8011 char pvpbuf[PSBUFSIZE]; 8012 8013 SM_REQUIRE(ISVALIDQGRP(e->e_qgrp)); 8014 8015 /* Count addresses and assign queue groups. */ 8016 naddrs = 0; 8017 changed = false; 8018 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 8019 { 8020 if (QS_IS_DEAD(q->q_state)) 8021 continue; 8022 ++naddrs; 8023 8024 /* bad addresses and those already sent stay put */ 8025 if (QS_IS_BADADDR(q->q_state) || 8026 QS_IS_SENT(q->q_state)) 8027 q->q_qgrp = e->e_qgrp; 8028 else if (!ISVALIDQGRP(q->q_qgrp)) 8029 { 8030 /* call ruleset which should return a queue group */ 8031 i = rscap(RS_QUEUEGROUP, q->q_user, NULL, e, &pvp, 8032 pvpbuf, sizeof(pvpbuf)); 8033 if (i == EX_OK && 8034 pvp != NULL && pvp[0] != NULL && 8035 (pvp[0][0] & 0377) == CANONNET && 8036 pvp[1] != NULL && pvp[1][0] != '\0') 8037 { 8038 i = name2qid(pvp[1]); 8039 if (ISVALIDQGRP(i)) 8040 { 8041 q->q_qgrp = i; 8042 changed = true; 8043 if (tTd(20, 4)) 8044 sm_syslog(LOG_INFO, NOQID, 8045 "queue group name %s -> %d", 8046 pvp[1], i); 8047 continue; 8048 } 8049 else if (LogLevel > 10) 8050 sm_syslog(LOG_INFO, NOQID, 8051 "can't find queue group name %s, selection ignored", 8052 pvp[1]); 8053 } 8054 if (q->q_mailer != NULL && 8055 ISVALIDQGRP(q->q_mailer->m_qgrp)) 8056 { 8057 changed = true; 8058 q->q_qgrp = q->q_mailer->m_qgrp; 8059 } 8060 else if (ISVALIDQGRP(e->e_qgrp)) 8061 q->q_qgrp = e->e_qgrp; 8062 else 8063 q->q_qgrp = 0; 8064 } 8065 } 8066 8067 /* only one address? nothing to split. */ 8068 if (naddrs <= 1 && !changed) 8069 return SM_SPLIT_NONE; 8070 8071 /* sort the addresses by queue group */ 8072 addrs = sm_rpool_malloc_x(e->e_rpool, naddrs * sizeof(ADDRESS *)); 8073 for (i = 0, q = e->e_sendqueue; q != NULL; q = q->q_next) 8074 { 8075 if (QS_IS_DEAD(q->q_state)) 8076 continue; 8077 addrs[i++] = q; 8078 } 8079 qsort(addrs, naddrs, sizeof(ADDRESS *), q_qgrp_compare); 8080 8081 /* split into multiple envelopes, by queue group */ 8082 nsplits = 0; 8083 es = NULL; 8084 e->e_sendqueue = NULL; 8085 for (i = 0; i < naddrs; ++i) 8086 { 8087 if (i == naddrs - 1 || addrs[i]->q_qgrp != addrs[i + 1]->q_qgrp) 8088 addrs[i]->q_next = NULL; 8089 else 8090 addrs[i]->q_next = addrs[i + 1]; 8091 8092 /* same queue group as original envelope? */ 8093 if (addrs[i]->q_qgrp == e->e_qgrp) 8094 { 8095 if (e->e_sendqueue == NULL) 8096 e->e_sendqueue = addrs[i]; 8097 continue; 8098 } 8099 8100 /* different queue group than original envelope */ 8101 if (es == NULL || addrs[i]->q_qgrp != es->e_qgrp) 8102 { 8103 ee = split_env(e, addrs[i], addrs[i]->q_qgrp, NOQDIR); 8104 es = ee; 8105 splits[nsplits++] = ee; 8106 } 8107 } 8108 8109 /* no splits? return right now. */ 8110 if (nsplits <= 0) 8111 return SM_SPLIT_NONE; 8112 8113 /* assign a queue directory to each additional envelope */ 8114 for (i = 0; i < nsplits; ++i) 8115 { 8116 es = splits[i]; 8117#if 0 8118 es->e_qdir = pickqdir(Queue[es->e_qgrp], es->e_msgsize, es); 8119#endif /* 0 */ 8120 if (!setnewqueue(es)) 8121 goto failure; 8122 } 8123 8124 /* sort the additional envelopes by queue file system */ 8125 qsort(splits, nsplits, sizeof(ENVELOPE *), e_filesys_compare); 8126 8127 /* create data files for each additional envelope */ 8128 if (!dup_df(e, splits[0])) 8129 { 8130 i = 0; 8131 goto failure; 8132 } 8133 for (i = 1; i < nsplits; ++i) 8134 { 8135 /* copy or link to the previous data file */ 8136 if (!dup_df(splits[i - 1], splits[i])) 8137 goto failure; 8138 } 8139 8140 /* success: prepend the new envelopes to the e->e_sibling list */ 8141 for (i = 0; i < nsplits; ++i) 8142 { 8143 es = splits[i]; 8144 es->e_sibling = e->e_sibling; 8145 e->e_sibling = es; 8146 } 8147 return SM_SPLIT_NEW(nsplits); 8148 8149 /* failure: clean up */ 8150 failure: 8151 if (i > 0) 8152 { 8153 int j; 8154 8155 for (j = 0; j < i; j++) 8156 (void) unlink(queuename(splits[j], DATAFL_LETTER)); 8157 } 8158 e->e_sendqueue = addrs[0]; 8159 for (i = 0; i < naddrs - 1; ++i) 8160 addrs[i]->q_next = addrs[i + 1]; 8161 addrs[naddrs - 1]->q_next = NULL; 8162 return SM_SPLIT_FAIL; 8163} 8164 8165/* 8166** SPLIT_WITHIN_QUEUE 8167** 8168** Split an envelope with multiple recipients into several 8169** envelopes within the same queue directory, if the number of 8170** recipients exceeds the limit for the queue group. 8171** 8172** Parameters: 8173** e -- envelope. 8174** 8175** Results: 8176** SM_SPLIT_FAIL on failure 8177** SM_SPLIT_NONE if no splitting occurred, 8178** or 1 + the number of additional envelopes created. 8179*/ 8180 8181#define SPLIT_LOG_LEVEL 8 8182 8183static int split_within_queue __P((ENVELOPE *)); 8184 8185static int 8186split_within_queue(e) 8187 ENVELOPE *e; 8188{ 8189 int maxrcpt, nrcpt, ndead, nsplit, i; 8190 int j, l; 8191 char *lsplits; 8192 ADDRESS *q, **addrs; 8193 ENVELOPE *ee, *firstsibling; 8194 8195 if (!ISVALIDQGRP(e->e_qgrp) || bitset(EF_SPLIT, e->e_flags)) 8196 return SM_SPLIT_NONE; 8197 8198 /* don't bother if there is no recipient limit */ 8199 maxrcpt = Queue[e->e_qgrp]->qg_maxrcpt; 8200 if (maxrcpt <= 0) 8201 return SM_SPLIT_NONE; 8202 8203 /* count recipients */ 8204 nrcpt = 0; 8205 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 8206 { 8207 if (QS_IS_DEAD(q->q_state)) 8208 continue; 8209 ++nrcpt; 8210 } 8211 if (nrcpt <= maxrcpt) 8212 return SM_SPLIT_NONE; 8213 8214 /* 8215 ** Preserve the recipient list 8216 ** so that we can restore it in case of error. 8217 ** (But we discard dead addresses.) 8218 */ 8219 8220 addrs = sm_rpool_malloc_x(e->e_rpool, nrcpt * sizeof(ADDRESS *)); 8221 for (i = 0, q = e->e_sendqueue; q != NULL; q = q->q_next) 8222 { 8223 if (QS_IS_DEAD(q->q_state)) 8224 continue; 8225 addrs[i++] = q; 8226 } 8227 8228 /* 8229 ** Partition the recipient list so that bad and sent addresses 8230 ** come first. These will go with the original envelope, and 8231 ** do not count towards the maxrcpt limit. 8232 ** addrs[] does not contain QS_IS_DEAD() addresses. 8233 */ 8234 8235 ndead = 0; 8236 for (i = 0; i < nrcpt; ++i) 8237 { 8238 if (QS_IS_BADADDR(addrs[i]->q_state) || 8239 QS_IS_SENT(addrs[i]->q_state) || 8240 QS_IS_DEAD(addrs[i]->q_state)) /* for paranoia's sake */ 8241 { 8242 if (i > ndead) 8243 { 8244 ADDRESS *tmp = addrs[i]; 8245 8246 addrs[i] = addrs[ndead]; 8247 addrs[ndead] = tmp; 8248 } 8249 ++ndead; 8250 } 8251 } 8252 8253 /* Check if no splitting required. */ 8254 if (nrcpt - ndead <= maxrcpt) 8255 return SM_SPLIT_NONE; 8256 8257 /* fix links */ 8258 for (i = 0; i < nrcpt - 1; ++i) 8259 addrs[i]->q_next = addrs[i + 1]; 8260 addrs[nrcpt - 1]->q_next = NULL; 8261 e->e_sendqueue = addrs[0]; 8262 8263 /* prepare buffer for logging */ 8264 if (LogLevel > SPLIT_LOG_LEVEL) 8265 { 8266 l = MAXLINE; 8267 lsplits = sm_malloc(l); 8268 if (lsplits != NULL) 8269 *lsplits = '\0'; 8270 j = 0; 8271 } 8272 else 8273 { 8274 /* get rid of stupid compiler warnings */ 8275 lsplits = NULL; 8276 j = l = 0; 8277 } 8278 8279 /* split the envelope */ 8280 firstsibling = e->e_sibling; 8281 i = maxrcpt + ndead; 8282 nsplit = 0; 8283 for (;;) 8284 { 8285 addrs[i - 1]->q_next = NULL; 8286 ee = split_env(e, addrs[i], e->e_qgrp, e->e_qdir); 8287 if (!dup_df(e, ee)) 8288 { 8289 8290 ee = firstsibling; 8291 while (ee != NULL) 8292 { 8293 (void) unlink(queuename(ee, DATAFL_LETTER)); 8294 ee = ee->e_sibling; 8295 } 8296 8297 /* Error. Restore e's sibling & recipient lists. */ 8298 e->e_sibling = firstsibling; 8299 for (i = 0; i < nrcpt - 1; ++i) 8300 addrs[i]->q_next = addrs[i + 1]; 8301 if (lsplits != NULL) 8302 sm_free(lsplits); 8303 return SM_SPLIT_FAIL; 8304 } 8305 8306 /* prepend the new envelope to e->e_sibling */ 8307 ee->e_sibling = e->e_sibling; 8308 e->e_sibling = ee; 8309 ++nsplit; 8310 if (LogLevel > SPLIT_LOG_LEVEL && lsplits != NULL) 8311 { 8312 if (j >= l - strlen(ee->e_id) - 3) 8313 { 8314 char *p; 8315 8316 l += MAXLINE; 8317 p = sm_realloc(lsplits, l); 8318 if (p == NULL) 8319 { 8320 /* let's try to get this done */ 8321 sm_free(lsplits); 8322 lsplits = NULL; 8323 } 8324 else 8325 lsplits = p; 8326 } 8327 if (lsplits != NULL) 8328 { 8329 if (j == 0) 8330 j += sm_strlcat(lsplits + j, 8331 ee->e_id, 8332 l - j); 8333 else 8334 j += sm_strlcat2(lsplits + j, 8335 "; ", 8336 ee->e_id, 8337 l - j); 8338 SM_ASSERT(j < l); 8339 } 8340 } 8341 if (nrcpt - i <= maxrcpt) 8342 break; 8343 i += maxrcpt; 8344 } 8345 if (LogLevel > SPLIT_LOG_LEVEL && lsplits != NULL) 8346 { 8347 if (nsplit > 0) 8348 { 8349 sm_syslog(LOG_NOTICE, e->e_id, 8350 "split: maxrcpts=%d, rcpts=%d, count=%d, id%s=%s", 8351 maxrcpt, nrcpt - ndead, nsplit, 8352 nsplit > 1 ? "s" : "", lsplits); 8353 } 8354 sm_free(lsplits); 8355 } 8356 return SM_SPLIT_NEW(nsplit); 8357} 8358/* 8359** SPLIT_BY_RECIPIENT 8360** 8361** Split an envelope with multiple recipients into multiple 8362** envelopes as required by the sendmail configuration. 8363** 8364** Parameters: 8365** e -- envelope. 8366** 8367** Results: 8368** Returns true on success, false on failure. 8369** 8370** Side Effects: 8371** see split_across_queue_groups(), split_within_queue(e) 8372*/ 8373 8374bool 8375split_by_recipient(e) 8376 ENVELOPE *e; 8377{ 8378 int split, n, i, j, l; 8379 char *lsplits; 8380 ENVELOPE *ee, *next, *firstsibling; 8381 8382 if (OpMode == SM_VERIFY || !ISVALIDQGRP(e->e_qgrp) || 8383 bitset(EF_SPLIT, e->e_flags)) 8384 return true; 8385 n = split_across_queue_groups(e); 8386 if (n == SM_SPLIT_FAIL) 8387 return false; 8388 firstsibling = ee = e->e_sibling; 8389 if (n > 1 && LogLevel > SPLIT_LOG_LEVEL) 8390 { 8391 l = MAXLINE; 8392 lsplits = sm_malloc(l); 8393 if (lsplits != NULL) 8394 *lsplits = '\0'; 8395 j = 0; 8396 } 8397 else 8398 { 8399 /* get rid of stupid compiler warnings */ 8400 lsplits = NULL; 8401 j = l = 0; 8402 } 8403 for (i = 1; i < n; ++i) 8404 { 8405 next = ee->e_sibling; 8406 if (split_within_queue(ee) == SM_SPLIT_FAIL) 8407 { 8408 e->e_sibling = firstsibling; 8409 return false; 8410 } 8411 ee->e_flags |= EF_SPLIT; 8412 if (LogLevel > SPLIT_LOG_LEVEL && lsplits != NULL) 8413 { 8414 if (j >= l - strlen(ee->e_id) - 3) 8415 { 8416 char *p; 8417 8418 l += MAXLINE; 8419 p = sm_realloc(lsplits, l); 8420 if (p == NULL) 8421 { 8422 /* let's try to get this done */ 8423 sm_free(lsplits); 8424 lsplits = NULL; 8425 } 8426 else 8427 lsplits = p; 8428 } 8429 if (lsplits != NULL) 8430 { 8431 if (j == 0) 8432 j += sm_strlcat(lsplits + j, 8433 ee->e_id, l - j); 8434 else 8435 j += sm_strlcat2(lsplits + j, "; ", 8436 ee->e_id, l - j); 8437 SM_ASSERT(j < l); 8438 } 8439 } 8440 ee = next; 8441 } 8442 if (LogLevel > SPLIT_LOG_LEVEL && lsplits != NULL && n > 1) 8443 { 8444 sm_syslog(LOG_NOTICE, e->e_id, "split: count=%d, id%s=%s", 8445 n - 1, n > 2 ? "s" : "", lsplits); 8446 sm_free(lsplits); 8447 } 8448 split = split_within_queue(e) != SM_SPLIT_FAIL; 8449 if (split) 8450 e->e_flags |= EF_SPLIT; 8451 return split; 8452} 8453 8454/* 8455** QUARANTINE_QUEUE_ITEM -- {un,}quarantine a single envelope 8456** 8457** Add/remove quarantine reason and requeue appropriately. 8458** 8459** Parameters: 8460** qgrp -- queue group for the item 8461** qdir -- queue directory in the given queue group 8462** e -- envelope information for the item 8463** reason -- quarantine reason, NULL means unquarantine. 8464** 8465** Results: 8466** true if item changed, false otherwise 8467** 8468** Side Effects: 8469** Changes quarantine tag in queue file and renames it. 8470*/ 8471 8472static bool 8473quarantine_queue_item(qgrp, qdir, e, reason) 8474 int qgrp; 8475 int qdir; 8476 ENVELOPE *e; 8477 char *reason; 8478{ 8479 bool dirty = false; 8480 bool failing = false; 8481 bool foundq = false; 8482 bool finished = false; 8483 int fd; 8484 int flags; 8485 int oldtype; 8486 int newtype; 8487 int save_errno; 8488 MODE_T oldumask = 0; 8489 SM_FILE_T *oldqfp, *tempqfp; 8490 char *bp; 8491 int bufsize; 8492 char oldqf[MAXPATHLEN]; 8493 char tempqf[MAXPATHLEN]; 8494 char newqf[MAXPATHLEN]; 8495 char buf[MAXLINE]; 8496 8497 oldtype = queue_letter(e, ANYQFL_LETTER); 8498 (void) sm_strlcpy(oldqf, queuename(e, ANYQFL_LETTER), sizeof(oldqf)); 8499 (void) sm_strlcpy(tempqf, queuename(e, NEWQFL_LETTER), sizeof(tempqf)); 8500 8501 /* 8502 ** Instead of duplicating all the open 8503 ** and lock code here, tell readqf() to 8504 ** do that work and return the open 8505 ** file pointer in e_lockfp. Note that 8506 ** we must release the locks properly when 8507 ** we are done. 8508 */ 8509 8510 if (!readqf(e, true)) 8511 { 8512 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8513 "Skipping %s\n", qid_printname(e)); 8514 return false; 8515 } 8516 oldqfp = e->e_lockfp; 8517 8518 /* open the new queue file */ 8519 flags = O_CREAT|O_WRONLY|O_EXCL; 8520 if (bitset(S_IWGRP, QueueFileMode)) 8521 oldumask = umask(002); 8522 fd = open(tempqf, flags, QueueFileMode); 8523 if (bitset(S_IWGRP, QueueFileMode)) 8524 (void) umask(oldumask); 8525 RELEASE_QUEUE; 8526 8527 if (fd < 0) 8528 { 8529 save_errno = errno; 8530 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8531 "Skipping %s: Could not open %s: %s\n", 8532 qid_printname(e), tempqf, 8533 sm_errstring(save_errno)); 8534 (void) sm_io_close(oldqfp, SM_TIME_DEFAULT); 8535 return false; 8536 } 8537 if (!lockfile(fd, tempqf, NULL, LOCK_EX|LOCK_NB)) 8538 { 8539 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8540 "Skipping %s: Could not lock %s\n", 8541 qid_printname(e), tempqf); 8542 (void) close(fd); 8543 (void) sm_io_close(oldqfp, SM_TIME_DEFAULT); 8544 return false; 8545 } 8546 8547 tempqfp = sm_io_open(SmFtStdiofd, SM_TIME_DEFAULT, (void *) &fd, 8548 SM_IO_WRONLY_B, NULL); 8549 if (tempqfp == NULL) 8550 { 8551 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8552 "Skipping %s: Could not lock %s\n", 8553 qid_printname(e), tempqf); 8554 (void) close(fd); 8555 (void) sm_io_close(oldqfp, SM_TIME_DEFAULT); 8556 return false; 8557 } 8558 8559 /* Copy the data over, changing the quarantine reason */ 8560 while (bufsize = sizeof(buf), 8561 (bp = fgetfolded(buf, &bufsize, oldqfp)) != NULL) 8562 { 8563 if (tTd(40, 4)) 8564 sm_dprintf("+++++ %s\n", bp); 8565 switch (bp[0]) 8566 { 8567 case 'q': /* quarantine reason */ 8568 foundq = true; 8569 if (reason == NULL) 8570 { 8571 if (Verbose) 8572 { 8573 (void) sm_io_fprintf(smioout, 8574 SM_TIME_DEFAULT, 8575 "%s: Removed quarantine of \"%s\"\n", 8576 e->e_id, &bp[1]); 8577 } 8578 sm_syslog(LOG_INFO, e->e_id, "unquarantine"); 8579 dirty = true; 8580 } 8581 else if (strcmp(reason, &bp[1]) == 0) 8582 { 8583 if (Verbose) 8584 { 8585 (void) sm_io_fprintf(smioout, 8586 SM_TIME_DEFAULT, 8587 "%s: Already quarantined with \"%s\"\n", 8588 e->e_id, reason); 8589 } 8590 (void) sm_io_fprintf(tempqfp, SM_TIME_DEFAULT, 8591 "q%s\n", reason); 8592 } 8593 else 8594 { 8595 if (Verbose) 8596 { 8597 (void) sm_io_fprintf(smioout, 8598 SM_TIME_DEFAULT, 8599 "%s: Quarantine changed from \"%s\" to \"%s\"\n", 8600 e->e_id, &bp[1], 8601 reason); 8602 } 8603 (void) sm_io_fprintf(tempqfp, SM_TIME_DEFAULT, 8604 "q%s\n", reason); 8605 sm_syslog(LOG_INFO, e->e_id, "quarantine=%s", 8606 reason); 8607 dirty = true; 8608 } 8609 break; 8610 8611 case 'S': 8612 /* 8613 ** If we are quarantining an unquarantined item, 8614 ** need to put in a new 'q' line before it's 8615 ** too late. 8616 */ 8617 8618 if (!foundq && reason != NULL) 8619 { 8620 if (Verbose) 8621 { 8622 (void) sm_io_fprintf(smioout, 8623 SM_TIME_DEFAULT, 8624 "%s: Quarantined with \"%s\"\n", 8625 e->e_id, reason); 8626 } 8627 (void) sm_io_fprintf(tempqfp, SM_TIME_DEFAULT, 8628 "q%s\n", reason); 8629 sm_syslog(LOG_INFO, e->e_id, "quarantine=%s", 8630 reason); 8631 foundq = true; 8632 dirty = true; 8633 } 8634 8635 /* Copy the line to the new file */ 8636 (void) sm_io_fprintf(tempqfp, SM_TIME_DEFAULT, 8637 "%s\n", bp); 8638 break; 8639 8640 case '.': 8641 finished = true; 8642 /* FALLTHROUGH */ 8643 8644 default: 8645 /* Copy the line to the new file */ 8646 (void) sm_io_fprintf(tempqfp, SM_TIME_DEFAULT, 8647 "%s\n", bp); 8648 break; 8649 } 8650 if (bp != buf) 8651 sm_free(bp); 8652 } 8653 8654 /* Make sure we read the whole old file */ 8655 errno = sm_io_error(tempqfp); 8656 if (errno != 0 && errno != SM_IO_EOF) 8657 { 8658 save_errno = errno; 8659 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8660 "Skipping %s: Error reading %s: %s\n", 8661 qid_printname(e), oldqf, 8662 sm_errstring(save_errno)); 8663 failing = true; 8664 } 8665 8666 if (!failing && !finished) 8667 { 8668 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8669 "Skipping %s: Incomplete file: %s\n", 8670 qid_printname(e), oldqf); 8671 failing = true; 8672 } 8673 8674 /* Check if we actually changed anything or we can just bail now */ 8675 if (!dirty) 8676 { 8677 /* pretend we failed, even though we technically didn't */ 8678 failing = true; 8679 } 8680 8681 /* Make sure we wrote things out safely */ 8682 if (!failing && 8683 (sm_io_flush(tempqfp, SM_TIME_DEFAULT) != 0 || 8684 ((SuperSafe == SAFE_REALLY || 8685 SuperSafe == SAFE_REALLY_POSTMILTER || 8686 SuperSafe == SAFE_INTERACTIVE) && 8687 fsync(sm_io_getinfo(tempqfp, SM_IO_WHAT_FD, NULL)) < 0) || 8688 ((errno = sm_io_error(tempqfp)) != 0))) 8689 { 8690 save_errno = errno; 8691 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8692 "Skipping %s: Error writing %s: %s\n", 8693 qid_printname(e), tempqf, 8694 sm_errstring(save_errno)); 8695 failing = true; 8696 } 8697 8698 8699 /* Figure out the new filename */ 8700 newtype = (reason == NULL ? NORMQF_LETTER : QUARQF_LETTER); 8701 if (oldtype == newtype) 8702 { 8703 /* going to rename tempqf to oldqf */ 8704 (void) sm_strlcpy(newqf, oldqf, sizeof(newqf)); 8705 } 8706 else 8707 { 8708 /* going to rename tempqf to new name based on newtype */ 8709 (void) sm_strlcpy(newqf, queuename(e, newtype), sizeof(newqf)); 8710 } 8711 8712 save_errno = 0; 8713 8714 /* rename tempqf to newqf */ 8715 if (!failing && 8716 rename(tempqf, newqf) < 0) 8717 save_errno = (errno == 0) ? EINVAL : errno; 8718 8719 /* Check rename() success */ 8720 if (!failing && save_errno != 0) 8721 { 8722 sm_syslog(LOG_DEBUG, e->e_id, 8723 "quarantine_queue_item: rename(%s, %s): %s", 8724 tempqf, newqf, sm_errstring(save_errno)); 8725 8726 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8727 "Error renaming %s to %s: %s\n", 8728 tempqf, newqf, 8729 sm_errstring(save_errno)); 8730 if (oldtype == newtype) 8731 { 8732 /* 8733 ** Bail here since we don't know the state of 8734 ** the filesystem and may need to keep tempqf 8735 ** for the user to rescue us. 8736 */ 8737 8738 RELEASE_QUEUE; 8739 errno = save_errno; 8740 syserr("!452 Error renaming control file %s", tempqf); 8741 /* NOTREACHED */ 8742 } 8743 else 8744 { 8745 /* remove new file (if rename() half completed) */ 8746 if (xunlink(newqf) < 0) 8747 { 8748 save_errno = errno; 8749 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8750 "Error removing %s: %s\n", 8751 newqf, 8752 sm_errstring(save_errno)); 8753 } 8754 8755 /* tempqf removed below */ 8756 failing = true; 8757 } 8758 8759 } 8760 8761 /* If changing file types, need to remove old type */ 8762 if (!failing && oldtype != newtype) 8763 { 8764 if (xunlink(oldqf) < 0) 8765 { 8766 save_errno = errno; 8767 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8768 "Error removing %s: %s\n", 8769 oldqf, sm_errstring(save_errno)); 8770 } 8771 } 8772 8773 /* see if anything above failed */ 8774 if (failing) 8775 { 8776 /* Something failed: remove new file, old file still there */ 8777 (void) xunlink(tempqf); 8778 } 8779 8780 /* 8781 ** fsync() after file operations to make sure metadata is 8782 ** written to disk on filesystems in which renames are 8783 ** not guaranteed. It's ok if they fail, mail won't be lost. 8784 */ 8785 8786 if (SuperSafe != SAFE_NO) 8787 { 8788 /* for soft-updates */ 8789 (void) fsync(sm_io_getinfo(tempqfp, 8790 SM_IO_WHAT_FD, NULL)); 8791 8792 if (!failing) 8793 { 8794 /* for soft-updates */ 8795 (void) fsync(sm_io_getinfo(oldqfp, 8796 SM_IO_WHAT_FD, NULL)); 8797 } 8798 8799 /* for other odd filesystems */ 8800 SYNC_DIR(tempqf, false); 8801 } 8802 8803 /* Close up shop */ 8804 RELEASE_QUEUE; 8805 if (tempqfp != NULL) 8806 (void) sm_io_close(tempqfp, SM_TIME_DEFAULT); 8807 if (oldqfp != NULL) 8808 (void) sm_io_close(oldqfp, SM_TIME_DEFAULT); 8809 8810 /* All went well */ 8811 return !failing; 8812} 8813 8814/* 8815** QUARANTINE_QUEUE -- {un,}quarantine matching items in the queue 8816** 8817** Read all matching queue items, add/remove quarantine 8818** reason, and requeue appropriately. 8819** 8820** Parameters: 8821** reason -- quarantine reason, "." means unquarantine. 8822** qgrplimit -- limit to single queue group unless NOQGRP 8823** 8824** Results: 8825** none. 8826** 8827** Side Effects: 8828** Lots of changes to the queue. 8829*/ 8830 8831void 8832quarantine_queue(reason, qgrplimit) 8833 char *reason; 8834 int qgrplimit; 8835{ 8836 int changed = 0; 8837 int qgrp; 8838 8839 /* Convert internal representation of unquarantine */ 8840 if (reason != NULL && reason[0] == '.' && reason[1] == '\0') 8841 reason = NULL; 8842 8843 if (reason != NULL) 8844 { 8845 /* clean it */ 8846 reason = newstr(denlstring(reason, true, true)); 8847 } 8848 8849 for (qgrp = 0; qgrp < NumQueue && Queue[qgrp] != NULL; qgrp++) 8850 { 8851 int qdir; 8852 8853 if (qgrplimit != NOQGRP && qgrplimit != qgrp) 8854 continue; 8855 8856 for (qdir = 0; qdir < Queue[qgrp]->qg_numqueues; qdir++) 8857 { 8858 int i; 8859 int nrequests; 8860 8861 if (StopRequest) 8862 stop_sendmail(); 8863 8864 nrequests = gatherq(qgrp, qdir, true, NULL, NULL, NULL); 8865 8866 /* first see if there is anything */ 8867 if (nrequests <= 0) 8868 { 8869 if (Verbose) 8870 { 8871 (void) sm_io_fprintf(smioout, 8872 SM_TIME_DEFAULT, "%s: no matches\n", 8873 qid_printqueue(qgrp, qdir)); 8874 } 8875 continue; 8876 } 8877 8878 if (Verbose) 8879 { 8880 (void) sm_io_fprintf(smioout, 8881 SM_TIME_DEFAULT, "Processing %s:\n", 8882 qid_printqueue(qgrp, qdir)); 8883 } 8884 8885 for (i = 0; i < WorkListCount; i++) 8886 { 8887 ENVELOPE e; 8888 8889 if (StopRequest) 8890 stop_sendmail(); 8891 8892 /* setup envelope */ 8893 clearenvelope(&e, true, sm_rpool_new_x(NULL)); 8894 e.e_id = WorkList[i].w_name + 2; 8895 e.e_qgrp = qgrp; 8896 e.e_qdir = qdir; 8897 8898 if (tTd(70, 101)) 8899 { 8900 sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8901 "Would do %s\n", e.e_id); 8902 changed++; 8903 } 8904 else if (quarantine_queue_item(qgrp, qdir, 8905 &e, reason)) 8906 changed++; 8907 8908 /* clean up */ 8909 sm_rpool_free(e.e_rpool); 8910 e.e_rpool = NULL; 8911 } 8912 if (WorkList != NULL) 8913 sm_free(WorkList); /* XXX */ 8914 WorkList = NULL; 8915 WorkListSize = 0; 8916 WorkListCount = 0; 8917 } 8918 } 8919 if (Verbose) 8920 { 8921 if (changed == 0) 8922 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8923 "No changes\n"); 8924 else 8925 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 8926 "%d change%s\n", 8927 changed, 8928 changed == 1 ? "" : "s"); 8929 } 8930} 8931