1/* 2 * Copyright (c) 1998-2013, 2023,2024 Proofpoint, 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** SENDMAIL.H -- MTA-specific definitions for sendmail. 15*/ 16 17#ifndef _SENDMAIL_H 18# define _SENDMAIL_H 1 19 20#ifndef MILTER 21# define MILTER 1 /* turn on MILTER by default */ 22#endif 23 24#ifdef _DEFINE 25# define EXTERN 26#else 27# define EXTERN extern 28#endif 29 30#include <unistd.h> 31 32#include <stddef.h> 33#include <stdlib.h> 34#include <stdio.h> 35#include <ctype.h> 36#include <setjmp.h> 37#include <string.h> 38#include <time.h> 39 40#include "sendmail/sendmail.h" 41 42#if STARTTLS 43# include <openssl/ssl.h> 44# if _FFR_TLSA_DANE && !defined(DANE) 45# define DANE _FFR_TLSA_DANE 46# endif 47#else /* STARTTLS */ 48# if DANE 49# error "DANE set but STARTTLS not defined" 50# endif 51# if _FFR_TLS_ALTNAMES 52# error "_FFR_TLS_ALTNAMES set but STARTTLS not defined" 53# endif 54# if _FFR_TLSFB2CLEAR 55# error "_FFR_TLSFB2CLEAR set but STARTTLS not defined" 56# endif 57# if _FFR_TLS_USE_CERTIFICATE_CHAIN_FILE 58# error "_FFR_TLS_USE_CERTIFICATE_CHAIN_FILE set but STARTTLS not defined" 59# endif 60#endif /* STARTTLS */ 61 62/* profiling? */ 63#if MONCONTROL 64# define SM_PROF(x) moncontrol(x) 65#else 66# define SM_PROF(x) 67#endif 68 69#ifdef _DEFINE 70# ifndef lint 71SM_UNUSED(static char SmailId[]) = "@(#)$Id: sendmail.h,v 8.1104 2013-11-22 20:51:56 ca Exp $"; 72# endif 73#endif 74 75#include "bf.h" 76#include "timers.h" 77#include <sm/exc.h> 78#include <sm/gen.h> 79#include <sm/heap.h> 80#include <sm/debug.h> 81#include <sm/rpool.h> 82#include <sm/io.h> 83#include <sm/path.h> 84#include <sm/signal.h> 85#include <sm/clock.h> 86#include <sm/mbdb.h> 87#include <sm/errstring.h> 88#include <sm/sysexits.h> 89#include <sm/shm.h> 90#include <sm/misc.h> 91 92#ifdef LOG 93# include <syslog.h> 94#endif 95 96#if NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 97# include <sys/socket.h> 98#endif 99#if NETUNIX 100# include <sys/un.h> 101#endif 102#if NETINET || NETINET6 103# include <netinet/in.h> 104#endif 105#if NETINET6 106/* 107** There is no standard yet for IPv6 includes. 108** Specify OS specific implementation in conf.h 109*/ 110#endif /* NETINET6 */ 111#if NETISO 112# include <netiso/iso.h> 113#endif 114#if NETNS 115# include <netns/ns.h> 116#endif 117#if NETX25 118# include <netccitt/x25.h> 119#endif 120 121#if NAMED_BIND 122# include <arpa/nameser.h> 123# ifdef NOERROR 124# undef NOERROR /* avoid <sys/streams.h> conflict */ 125# endif 126# include <resolv.h> 127# if !defined(NO_DATA) 128# define NO_DATA NO_ADDRESS 129# endif 130#else /* NAMED_BIND */ 131# undef SM_SET_H_ERRNO 132# define SM_SET_H_ERRNO(err) 133#endif /* NAMED_BIND */ 134 135#if HESIOD 136# include <hesiod.h> 137# if !defined(HES_ER_OK) || defined(HESIOD_INTERFACES) 138# define HESIOD_INIT /* support for the new interface */ 139# endif 140#endif /* HESIOD */ 141 142#if USE_EAI && !defined(ALLOW_255) 143# define ALLOW_255 1 144#endif 145#if _FFR_EAI && _FFR_EIGHT_BIT_ADDR_OK 146# error "Cannot enable both of these FFRs: _FFR_EAI _FFR_EIGHT_BIT_ADDR_OK" 147#endif 148 149#if _FFR_OCC && !SM_CONF_SHM 150# error "_FFR_OCC requires SM_CONF_SHM" 151#endif 152 153#if !NOT_SENDMAIL 154# if _FFR_SM_LDAP_DBG && !(LDAPMAP && defined(LBER_OPT_LOG_PRINT_FN)) 155# error "_FFR_SM_LDAP_DBG requires LDAPMAP and LBER_OPT_LOG_PRINT_FN" 156# endif 157#endif 158 159#if _FFR_LOG_MORE1 > 1 || _FFR_LOG_MORE2 > 1 160# if _FFR_LOG_MORE1 != _FFR_LOG_MORE2 161# error "_FFR_LOG_MORE1 != _FFR_LOG_MORE2" 162# endif 163#endif 164 165#if !NOT_SENDMAIL 166# if LDAP_NETWORK_TIMEOUT && !(LDAPMAP && defined(LDAP_OPT_NETWORK_TIMEOUT)) 167# error "LDAP_NETWORK_TIMEOUT requires LDAPMAP" 168# endif 169#endif 170 171#if !NOT_SENDMAIL 172# if LDAP_REFERRALS && !LDAPMAP 173# error "LDAP_REFERRALS requires LDAPMAP" 174# endif 175#endif 176 177#if _FFR_VRFY_TRUSTED_FIRST && !defined(X509_V_FLAG_TRUSTED_FIRST) 178# error "_FFR_VRFY_TRUSTED_FIRST set but X509_V_FLAG_TRUSTED_FIRST not defined" 179#endif 180 181#if _FFR_8BITENVADDR 182# define MAXNAME_I ((MAXNAME) * 2) 183#else 184# define MAXNAME_I MAXNAME 185#endif 186 187#if !defined(_FFR_M_ONLY_IPV4) 188# define _FFR_M_ONLY_IPV4 1 189#endif 190 191#define SM_IS_EMPTY(s) (NULL == (s) || '\0' == *(s)) 192 193#if STARTTLS 194# if DANE 195# define DANE_FP_LOG_LEN 256 196# define DANE_FP_DBG_LEN 4096 197struct dane_vrfy_ctx_S 198{ 199 /* see tls.h: values for DANE option and dane_vrfy_chk */ 200 int dane_vrfy_chk; 201 int dane_vrfy_res; 202 int dane_vrfy_port; 203 204 /* use OpenSSL functions for DANE checks? */ 205 bool dane_vrfy_dane_enabled; 206 207 /* look up TLSA RRs, SNI unless dane_tlsa_sni is set. */ 208 char *dane_vrfy_host; 209 char *dane_vrfy_sni; /* if not NULL: use for SNI */ 210 211 /* fingerprint in printable format - just for logging */ 212 char dane_vrfy_fp[DANE_FP_LOG_LEN]; 213}; 214 215typedef struct dane_tlsa_S dane_tlsa_T, *dane_tlsa_P; 216typedef struct dane_vrfy_ctx_S dane_vrfy_ctx_T, *dane_vrfy_ctx_P; 217 218# endif /* DANE */ 219 220/* TLS information context */ 221struct tlsi_ctx_S 222{ 223 /* use unsigned long? */ 224 BITMAP256 tlsi_flags; 225# if DANE 226 dane_vrfy_ctx_T tlsi_dvc; 227# endif 228}; 229typedef struct tlsi_ctx_S tlsi_ctx_T, *tlsi_ctx_P; 230 231/* TLS information context flags */ 232#define TLSI_FL_CRLREQ 'R' /* CRL required */ 233#define TLSI_FL_FB2CLR 'C' /* fall back to clear text is ok */ 234#define TLSI_FL_NOFB2CLR 'c' /* do not fall back to clear text */ 235#define TLSI_FL_NODANE 'd' /* do not use/look up DANE */ 236#define TLSI_FL_NOSTS 'M' /* do not use/look up STS */ 237/* internal */ 238#define TLSI_FL_STS_NOFB2CLR 0x01 /* no clear text: STS is used */ 239#define SM_TLSI_IS(tlsi_ctx, flag) \ 240 (((tlsi_ctx) != NULL) && bitnset((flag), (tlsi_ctx)->tlsi_flags)) 241 242/* ugly hack, is it worth using different values? */ 243# if _FFR_LOG_MORE1 > 1 || _FFR_LOG_MORE2 > 1 244# define LOG_MORE_2(buf, bp) \ 245 p = macvalue(macid("{tls_version}"), e); \ 246 if (SM_IS_EMPTY(p)) \ 247 p = "NONE"; \ 248 (void) sm_snprintf(bp, SPACELEFT(buf, bp), ", tls_version=%.10s", p); \ 249 bp += strlen(bp); \ 250 p = macvalue(macid("{cipher}"), e); \ 251 if (SM_IS_EMPTY(p)) \ 252 p = "NONE"; \ 253 (void) sm_snprintf(bp, SPACELEFT(buf, bp), ", cipher=%.20s", p); \ 254 bp += strlen(bp); 255# else 256# define LOG_MORE_2(buf, bp) 257# endif 258 259# define LOG_MORE(buf, bp) \ 260 p = macvalue(macid("{verify}"), e); \ 261 if (SM_IS_EMPTY(p)) \ 262 p = "NONE"; \ 263 (void) sm_snprintf(bp, SPACELEFT(buf, bp), ", tls_verify=%.20s", p); \ 264 bp += strlen(bp); \ 265 LOG_MORE_2(buf, bp) 266 267#else 268# define LOG_MORE(buf, bp) 269#endif /* STARTTLS */ 270 271#if SASL 272/* include the sasl include files if we have them */ 273# if SASL == 2 || SASL >= 20000 274# include <sasl/sasl.h> 275# include <sasl/saslplug.h> 276# include <sasl/saslutil.h> 277# if SASL_VERSION_FULL < 0x020119 278typedef int (*sasl_callback_ft)(void); 279# endif 280# else /* SASL == 2 || SASL >= 20000 */ 281# include <sasl.h> 282# include <saslutil.h> 283typedef int (*sasl_callback_ft)(void); 284# endif /* SASL == 2 || SASL >= 20000 */ 285# if defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) 286# define SASL_VERSION (SASL_VERSION_MAJOR * 10000) + (SASL_VERSION_MINOR * 100) + SASL_VERSION_STEP 287# if SASL == 1 || SASL == 2 288# undef SASL 289# define SASL SASL_VERSION 290# else /* SASL == 1 || SASL == 2 */ 291# if SASL != SASL_VERSION 292# error "README: -DSASL (SASL) does not agree with the version of the CYRUS_SASL library (SASL_VERSION)" 293# error "README: see README!" 294# endif /* SASL != SASL_VERSION */ 295# endif /* SASL == 1 || SASL == 2 */ 296# else /* defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) */ 297# if SASL == 1 298# error "README: please set -DSASL to the version of the CYRUS_SASL library" 299# error "README: see README!" 300# endif /* SASL == 1 */ 301# endif /* defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) */ 302#endif /* SASL */ 303 304/* 305** Following are "sort of" configuration constants, but they should 306** be pretty solid on most architectures today. They have to be 307** defined after <arpa/nameser.h> because some versions of that 308** file also define them. In all cases, we can't use sizeof because 309** some systems (e.g., Crays) always treat everything as being at 310** least 64 bits. 311*/ 312 313#ifndef INADDRSZ 314# define INADDRSZ 4 /* size of an IPv4 address in bytes */ 315#endif 316#ifndef IN6ADDRSZ 317# define IN6ADDRSZ 16 /* size of an IPv6 address in bytes */ 318#endif 319#ifndef INT16SZ 320# define INT16SZ 2 /* size of a 16 bit integer in bytes */ 321#endif 322#ifndef INT32SZ 323# define INT32SZ 4 /* size of a 32 bit integer in bytes */ 324#endif 325#ifndef INADDR_LOOPBACK 326# define INADDR_LOOPBACK 0x7f000001 /* loopback address */ 327#endif 328 329/* 330** Error return from inet_addr(3), in case not defined in /usr/include. 331*/ 332 333#ifndef INADDR_NONE 334# define INADDR_NONE 0xffffffff 335#endif 336 337/* By default use uncompressed IPv6 address format (no "::") */ 338#ifndef IPV6_FULL 339# define IPV6_FULL 1 340#endif 341 342/* (f)open() modes for queue files */ 343#define QF_O_EXTRA 0 344 345#define SM_ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0])) 346 347/* 348** An 'argument class' describes the storage allocation status 349** of an object pointed to by an argument to a function. 350*/ 351 352typedef enum 353{ 354 A_HEAP, /* the storage was allocated by malloc, and the 355 * ownership of the storage is ceded by the caller 356 * to the called function. */ 357 A_TEMP, /* The storage is temporary, and is only guaranteed 358 * to be valid for the duration of the function call. */ 359 A_PERM /* The storage is 'permanent': this might mean static 360 * storage, or rpool storage. */ 361} ARGCLASS_T; 362 363/* forward references for prototypes */ 364typedef struct envelope ENVELOPE; 365typedef struct mailer MAILER; 366typedef struct queuegrp QUEUEGRP; 367 368/* 369** Address structure. 370** Addresses are stored internally in this structure. 371*/ 372 373struct address 374{ 375 char *q_paddr; /* the printname for the address */ 376 char *q_user; /* user name */ 377 char *q_ruser; /* real user name, or NULL if q_user */ 378 char *q_host; /* host name [x] */ 379#if DANE 380 char *q_qname; /* original query (host) name */ 381#endif 382 struct mailer *q_mailer; /* mailer to use */ 383 unsigned long q_flags; /* status flags, see below */ 384 uid_t q_uid; /* user-id of receiver (if known) */ 385 gid_t q_gid; /* group-id of receiver (if known) */ 386 char *q_home; /* home dir (local mailer only) */ 387 char *q_fullname; /* full name if known */ 388 struct address *q_next; /* chain */ 389 struct address *q_alias; /* address this results from */ 390 char *q_owner; /* owner of q_alias */ 391 struct address *q_tchain; /* temporary use chain */ 392#if PIPELINING 393 struct address *q_pchain; /* chain for pipelining */ 394#endif 395 char *q_finalrcpt; /* Final-Recipient: DSN header */ 396 char *q_orcpt; /* ORCPT parameter from RCPT TO: line */ 397 char *q_status; /* status code for DSNs */ 398 char *q_rstatus; /* remote status message for DSNs */ 399 time_t q_statdate; /* date of status messages */ 400 char *q_statmta; /* MTA generating q_rstatus */ 401 short q_state; /* address state, see below */ 402 char *q_signature; /* MX-based sorting value */ 403 int q_qgrp; /* index into queue groups */ 404 char *q_message; /* error message */ 405}; 406 407typedef struct address ADDRESS; 408 409 410/* 411** Note: only some of the flags are saved in the queue; 412** the code in queue.c does not use the actual value but maps each flag 413** to/from an associated character. 414** If the values would not change then those could be stored/retrieved 415** directly (applying a mask to select those flags which should be kep) -- 416** the mapping to/from characters provides a "defined" external interface 417** provided those mappings are kept (and if an old mapping is removed then 418** it should be kept as comment so it is not reused "too soon"). 419*/ 420 421/* bit values for q_flags */ 422#define QGOODUID 0x00000001 /* the q_uid q_gid fields are good */ 423#define QPRIMARY 0x00000002 /* set from RCPT or argv */ 424#define QNOTREMOTE 0x00000004 /* address not for remote forwarding */ 425#define QSELFREF 0x00000008 /* this address references itself */ 426#define QBOGUSSHELL 0x00000010 /* user has no valid shell listed */ 427#define QUNSAFEADDR 0x00000020 /* address acquired via unsafe path */ 428#define QPINGONSUCCESS 0x00000040 /* give return on successful delivery */ 429#define QPINGONFAILURE 0x00000080 /* give return on failure */ 430#define QPINGONDELAY 0x00000100 /* give return on message delay */ 431#define QHASNOTIFY 0x00000200 /* propagate notify parameter */ 432#define QRELAYED 0x00000400 /* DSN: relayed to non-DSN aware sys */ 433#define QEXPANDED 0x00000800 /* DSN: undergone list expansion */ 434#define QDELIVERED 0x00001000 /* DSN: successful final delivery */ 435#define QDELAYED 0x00002000 /* DSN: message delayed */ 436#define QALIAS 0x00004000 /* expanded alias */ 437#define QBYTRACE 0x00008000 /* DeliverBy: trace */ 438#define QBYNDELAY 0x00010000 /* DeliverBy: notify, delay */ 439#define QBYNRELAY 0x00020000 /* DeliverBy: notify, relayed */ 440#define QINTBCC 0x00040000 /* internal Bcc */ 441#define QDYNMAILER 0x00080000 /* "dynamic mailer" */ 442#define QSECURE 0x00100000 /* DNSSEC ok for host lookup */ 443#define QQUEUED 0x00200000 /* queued */ 444#define QINTREPLY 0x00400000 /* internally rejected (delivery) */ 445#define QMXSECURE 0x00800000 /* DNSSEC ok for MX lookup */ 446#define QTHISPASS 0x40000000 /* temp: address set this pass */ 447#define QRCPTOK 0x80000000 /* recipient() processed address */ 448 449#define QDYNMAILFLG 'Y' 450 451#define Q_PINGFLAGS (QPINGONSUCCESS|QPINGONFAILURE|QPINGONDELAY) 452 453#define QISSECURE(r) (0 != ((r)->q_flags & QSECURE)) 454 455#if _FFR_RCPTFLAGS 456# define QMATCHFLAGS (QINTBCC|QDYNMAILER) 457# define QMATCH_FLAG(a) ((a)->q_flags & QMATCHFLAGS) 458# define ADDR_FLAGS_MATCH(a, b) (QMATCH_FLAG(a) == QMATCH_FLAG(b)) 459#else 460# define ADDR_FLAGS_MATCH(a, b) true 461#endif 462 463/* values for q_state */ 464#define QS_OK 0 /* address ok (for now)/not yet tried */ 465#define QS_SENT 1 /* good address, delivery complete */ 466#define QS_BADADDR 2 /* illegal address */ 467#define QS_QUEUEUP 3 /* save address in queue */ 468#define QS_RETRY 4 /* retry delivery for next MX */ 469#define QS_VERIFIED 5 /* verified, but not expanded */ 470 471/* 472** Notice: all of the following values are variations of QS_DONTSEND. 473** If new states are added, they must be inserted in the proper place! 474** See the macro definition of QS_IS_DEAD() down below. 475*/ 476 477#define QS_DONTSEND 6 /* don't send to this address */ 478#define QS_EXPANDED 7 /* expanded */ 479#define QS_SENDER 8 /* message sender (MeToo) */ 480#define QS_CLONED 9 /* addr cloned to split envelope */ 481#define QS_DISCARDED 10 /* rcpt discarded (EF_DISCARD) */ 482#define QS_REPLACED 11 /* maplocaluser()/UserDB replaced */ 483#define QS_REMOVED 12 /* removed (removefromlist()) */ 484#define QS_DUPLICATE 13 /* duplicate suppressed */ 485#define QS_INCLUDED 14 /* :include: delivery */ 486#define QS_FATALERR 15 /* fatal error, don't deliver */ 487 488/* address state testing primitives */ 489#define QS_IS_OK(s) ((s) == QS_OK) 490#define QS_IS_SENT(s) ((s) == QS_SENT) 491#define QS_IS_BADADDR(s) ((s) == QS_BADADDR) 492#define QS_IS_QUEUEUP(s) ((s) == QS_QUEUEUP) 493#define QS_IS_RETRY(s) ((s) == QS_RETRY) 494#define QS_IS_VERIFIED(s) ((s) == QS_VERIFIED) 495#define QS_IS_EXPANDED(s) ((s) == QS_EXPANDED) 496#define QS_IS_REMOVED(s) ((s) == QS_REMOVED) 497#define QS_IS_UNDELIVERED(s) ((s) == QS_OK || \ 498 (s) == QS_QUEUEUP || \ 499 (s) == QS_RETRY || \ 500 (s) == QS_VERIFIED) 501#define QS_IS_UNMARKED(s) ((s) == QS_OK || \ 502 (s) == QS_RETRY) 503#define QS_IS_SENDABLE(s) ((s) == QS_OK || \ 504 (s) == QS_QUEUEUP || \ 505 (s) == QS_RETRY) 506#define QS_IS_ATTEMPTED(s) ((s) == QS_QUEUEUP || \ 507 (s) == QS_RETRY || \ 508 (s) == QS_SENT || \ 509 (s) == QS_DISCARDED) 510#define QS_IS_DEAD(s) ((s) >= QS_DONTSEND) 511#define QS_IS_TEMPFAIL(s) ((s) == QS_QUEUEUP || (s) == QS_RETRY) 512 513#define QUP_FL_NONE 0x0000 514#define QUP_FL_ANNOUNCE 0x0001 515#define QUP_FL_MSYNC 0x0002 516#define QUP_FL_UNLOCK 0x0004 517 518#define NULLADDR ((ADDRESS *) NULL) 519 520extern ADDRESS NullAddress; /* a null (template) address [main.c] */ 521 522/* for cataddr() */ 523#define NOSPACESEP 256 524 525/* functions */ 526extern void cataddr __P((char **, char **, char *, int, int, bool)); 527extern char *crackaddr __P((char *, ENVELOPE *)); 528extern bool emptyaddr __P((ADDRESS *)); 529extern ADDRESS *getctladdr __P((ADDRESS *)); 530extern int include __P((char *, bool, ADDRESS *, ADDRESS **, int, ENVELOPE *)); 531extern bool invalidaddr __P((char *, char *, bool)); 532extern ADDRESS *parseaddr __P((char *, ADDRESS *, int, int, char **, 533 ENVELOPE *, bool)); 534extern char **prescan __P((char *, int, char[], int, char **, unsigned char *, bool)); 535extern void printaddr __P((SM_FILE_T *, ADDRESS *, bool)); 536extern ADDRESS *recipient __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 537extern char *remotename __P((char *, MAILER *, int, int *, ENVELOPE *)); 538extern int rewrite __P((char **, int, int, ENVELOPE *, int)); 539extern bool sameaddr __P((ADDRESS *, ADDRESS *)); 540extern int sendtolist __P((char *, ADDRESS *, ADDRESS **, int, ENVELOPE *)); 541#if MILTER 542extern int removefromlist __P((char *, ADDRESS **, ENVELOPE *)); 543#endif 544extern void setsender __P((char *, ENVELOPE *, char **, int, bool)); 545typedef void esmtp_args_F __P((ADDRESS *, char *, char *, ENVELOPE *)); 546extern void parse_esmtp_args __P((ENVELOPE *, ADDRESS *, char *, char *, 547 char *, char *args[], esmtp_args_F)); 548extern esmtp_args_F mail_esmtp_args; 549extern esmtp_args_F rcpt_esmtp_args; 550extern void reset_mail_esmtp_args __P((ENVELOPE *)); 551 552/* macro to simplify the common call to rewrite() */ 553#define REWRITE(pvp, rs, env) rewrite(pvp, rs, 0, env, MAXATOM) 554 555/* 556** Token Tables for prescan 557*/ 558 559extern unsigned char ExtTokenTab[256]; /* external strings */ 560extern unsigned char IntTokenTab[256]; /* internal strings */ 561 562 563/* 564** Mailer definition structure. 565** Every mailer known to the system is declared in this 566** structure. It defines the pathname of the mailer, some 567** flags associated with it, and the argument vector to 568** pass to it. The flags are defined in conf.c 569** 570** The argument vector is expanded before actual use. All 571** words except the first are passed through the macro 572** processor. 573*/ 574 575struct mailer 576{ 577 char *m_name; /* symbolic name of this mailer */ 578 char *m_mailer; /* pathname of the mailer to use */ 579 char *m_mtatype; /* type of this MTA */ 580 char *m_addrtype; /* type for addresses */ 581 char *m_diagtype; /* type for diagnostics */ 582 BITMAP256 m_flags; /* status flags, see below */ 583 short m_mno; /* mailer number internally */ 584 short m_nice; /* niceness to run at (mostly for prog) */ 585 char **m_argv; /* template argument vector */ 586 short m_sh_rwset; /* rewrite set: sender header addresses */ 587 short m_se_rwset; /* rewrite set: sender envelope addresses */ 588 short m_rh_rwset; /* rewrite set: recipient header addresses */ 589 short m_re_rwset; /* rewrite set: recipient envelope addresses */ 590 char *m_eol; /* end of line string */ 591 long m_maxsize; /* size limit on message to this mailer */ 592 int m_linelimit; /* max # characters per line */ 593 int m_maxdeliveries; /* max deliveries per mailer connection */ 594 char *m_execdir; /* directory to chdir to before execv */ 595 char *m_rootdir; /* directory to chroot to before execv */ 596 uid_t m_uid; /* UID to run as */ 597 gid_t m_gid; /* GID to run as */ 598 char *m_defcharset; /* default character set */ 599 time_t m_wait; /* timeout to wait for end */ 600 int m_maxrcpt; /* max recipients per envelope client-side */ 601 short m_qgrp; /* queue group for this mailer */ 602#if DANE 603 unsigned short m_port; /* port (if appropriate for mailer) */ 604#endif 605}; 606 607/* bits for m_flags */ 608#define M_xSMTP 0x01 /* internal: {ES,S,L}MTP */ 609#define M_ESMTP 'a' /* run Extended SMTP */ 610#define M_ALIASABLE 'A' /* user can be LHS of an alias */ 611#define M_BLANKEND 'b' /* ensure blank line at end of message */ 612#define M_STRIPBACKSL 'B' /* strip all leading backslashes from user */ 613#define M_NOCOMMENT 'c' /* don't include comment part of address */ 614#define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ 615#define M_NOBRACKET 'd' /* never angle bracket envelope route-addrs */ 616 /* 'D' CF: include Date: */ 617#define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ 618#define M_ESCFROM 'E' /* escape From lines to >From */ 619#define M_FOPT 'f' /* mailer takes picky -f flag */ 620 /* 'F' CF: include From: or Resent-From: */ 621#define M_NO_NULL_FROM 'g' /* sender of errors should be $g */ 622#define M_HST_UPPER 'h' /* preserve host case distinction */ 623#define M_PREHEAD 'H' /* MAIL11V3: preview headers */ 624#define M_UDBENVELOPE 'i' /* do udbsender rewriting on envelope */ 625#define M_INTERNAL 'I' /* SMTP to another sendmail site */ 626#define M_UDBRECIPIENT 'j' /* do udbsender rewriting on recipient lines */ 627#define M_NOLOOPCHECK 'k' /* don't check for loops in HELO command */ 628#define M_CHUNKING 'K' /* CHUNKING: reserved for future use */ 629#define M_LOCALMAILER 'l' /* delivery is to this host */ 630#define M_LIMITS 'L' /* must enforce SMTP line limits */ 631#define M_MUSER 'm' /* can handle multiple users at once */ 632 /* 'M' CF: include Message-Id: */ 633#define M_NHDR 'n' /* don't insert From line */ 634#define M_MANYSTATUS 'N' /* MAIL11V3: DATA returns multi-status */ 635#define M_RUNASRCPT 'o' /* always run mailer as recipient */ 636 /* 'O' free? */ 637#define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ 638 /* 'P' CF: include Return-Path: */ 639#define M_VRFY250 'q' /* VRFY command returns 250 instead of 252 */ 640#define M_ROPT 'r' /* mailer takes picky -r flag */ 641#define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */ 642#define M_STRIPQ 's' /* strip quote chars from user/host */ 643#define M_SPECIFIC_UID 'S' /* run as specific uid/gid */ 644#define M_USR_UPPER 'u' /* preserve user case distinction */ 645#define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ 646#define M_CONTENT_LEN 'v' /* add Content-Length: header (SVr4) */ 647 /* 'V' UIUC: !-relativize all addresses */ 648#define M_HASPWENT 'w' /* check for /etc/passwd entry */ 649#define M_NOHOSTSTAT 'W' /* ignore long term host status information */ 650 /* 'x' CF: include Full-Name: */ 651#define M_XDOT 'X' /* use hidden-dot algorithm */ 652 /* 'y' free? */ 653 /* 'Y' free? */ 654#define M_LMTP 'z' /* run Local Mail Transport Protocol */ 655#define M_DIALDELAY 'Z' /* apply dial delay sleeptime */ 656#define M_NOMX '0' /* turn off MX lookups */ 657#define M_NONULLS '1' /* don't send null bytes */ 658#define M_FSMTP '2' /* force SMTP (no ESMTP even if offered) */ 659#define M_EBCDIC '3' /* extend Q-P encoding for EBCDIC */ 660#define M_ONLY_IPV4 '4' /* Use only IPv4 */ 661#define M_TRYRULESET5 '5' /* use ruleset 5 after local aliasing */ 662#define M_7BITHDRS '6' /* strip headers to 7 bits even in 8 bit path */ 663#define M_7BITS '7' /* use 7-bit path */ 664#define M_8BITS '8' /* force "just send 8" behaviour */ 665#define M_MAKE8BIT '9' /* convert 7 -> 8 bit if appropriate */ 666#define M_CHECKINCLUDE ':' /* check for :include: files */ 667#define M_CHECKPROG '|' /* check for |program addresses */ 668#define M_CHECKFILE '/' /* check for /file addresses */ 669#define M_CHECKUDB '@' /* user can be user database key */ 670#define M_CHECKHDIR '~' /* SGI: check for valid home directory */ 671#define M_HOLD '%' /* Hold delivery until ETRN/-qI/-qR/-qS */ 672#define M_PLUS '+' /* Reserved: Used in mc for adding new flags */ 673#define M_MINUS '-' /* Reserved: Used in mc for removing flags */ 674#define M_NOMHHACK '!' /* Don't perform HM hack dropping explicit from */ 675#if _FFR_SMTPS_CLIENT 676# define M_SMTPS_CLIENT '_' /* use SMTP over TLS (465/TCP) */ 677#endif 678 679/* functions */ 680extern void initerrmailers __P((void)); 681extern void makemailer __P((char *)); 682extern void makequeue __P((char *, bool)); 683extern void runqueueevent __P((int)); 684#if _FFR_QUEUE_RUN_PARANOIA 685extern bool checkqueuerunner __P((void)); 686#endif 687 688EXTERN MAILER *FileMailer; /* ptr to *file* mailer */ 689EXTERN MAILER *InclMailer; /* ptr to *include* mailer */ 690EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 691EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 692#if _FFR_RCPTFLAGS 693EXTERN MAILER *Mailer[MAXMAILERS * 2 + 1]; 694#else 695EXTERN MAILER *Mailer[MAXMAILERS + 1]; 696#endif 697 698/* 699** Queue group definition structure. 700** Every queue group known to the system is declared in this structure. 701** It defines the basic pathname of the queue group, some flags 702** associated with it, and the argument vector to pass to it. 703*/ 704 705struct qpaths_s 706{ 707 char *qp_name; /* name of queue dir, relative path */ 708 short qp_subdirs; /* use subdirs? */ 709 short qp_fsysidx; /* file system index of this directory */ 710#if SM_CONF_SHM 711 int qp_idx; /* index into array for queue information */ 712#endif 713}; 714 715typedef struct qpaths_s QPATHS; 716 717struct queuegrp 718{ 719 char *qg_name; /* symbolic name of this queue group */ 720 721 /* 722 ** For now this is the same across all queue groups. 723 ** Otherwise we have to play around with chdir(). 724 */ 725 726 char *qg_qdir; /* common component of queue directory */ 727 short qg_index; /* queue number internally, index in Queue[] */ 728 int qg_maxqrun; /* max # of jobs in one queuerun */ 729 int qg_numqueues; /* number of queues in this queue group */ 730 731 /* 732 ** qg_queueintvl == 0 denotes that no individual value is used. 733 ** Whatever accesses this must deal with "<= 0" as 734 ** "not set, use appropriate default". 735 */ 736 737 time_t qg_queueintvl; /* interval for queue runs */ 738 QPATHS *qg_qpaths; /* list of queue directories */ 739 BITMAP256 qg_flags; /* status flags, see below */ 740 short qg_nice; /* niceness for queue run */ 741 int qg_wgrp; /* Assigned to this work group */ 742 int qg_maxlist; /* max items in work queue for this group */ 743 int qg_curnum; /* current number of queue for queue runs */ 744 int qg_maxrcpt; /* max recipients per envelope, 0==no limit */ 745 746 time_t qg_nextrun; /* time for next queue runs */ 747#if _FFR_QUEUE_GROUP_SORTORDER 748 short qg_sortorder; /* how do we sort this queuerun */ 749#endif 750#if 0 751 long qg_wkrcptfact; /* multiplier for # recipients -> priority */ 752 long qg_qfactor; /* slope of queue function */ 753 bool qg_doqueuerun; /* XXX flag is it time to do a queuerun */ 754#endif /* 0 */ 755}; 756 757/* bits for qg_flags */ 758#define QD_DEFINED ((char) 1) /* queue group has been defined */ 759#define QD_FORK 'f' /* fork queue runs */ 760 761extern void filesys_update __P((void)); 762#if _FFR_ANY_FREE_FS 763extern bool filesys_free __P((long)); 764#endif 765 766#if SASL 767/* 768** SASL 769*/ 770 771/* lines in authinfo file or index into SASL_AI_T */ 772# define SASL_WRONG (-1) 773# define SASL_USER 0 /* authorization id (user) */ 774# define SASL_AUTHID 1 /* authentication id */ 775# define SASL_PASSWORD 2 /* password fuer authid */ 776# define SASL_DEFREALM 3 /* realm to use */ 777# define SASL_MECHLIST 4 /* list of mechanisms to try */ 778# define SASL_ID_REALM 5 /* authid@defrealm */ 779 780/* 781** Current mechanism; this is just used to convey information between 782** invocation of SASL callback functions. 783** It must be last in the list, because it's not allocated by us 784** and hence we don't free() it. 785*/ 786# define SASL_MECH 6 787# define SASL_ENTRIES 7 /* number of entries in array */ 788 789# define SASL_USER_BIT (1 << SASL_USER) 790# define SASL_AUTHID_BIT (1 << SASL_AUTHID) 791# define SASL_PASSWORD_BIT (1 << SASL_PASSWORD) 792# define SASL_DEFREALM_BIT (1 << SASL_DEFREALM) 793# define SASL_MECHLIST_BIT (1 << SASL_MECHLIST) 794 795/* authenticated? */ 796# define SASL_NOT_AUTH 0 /* not authenticated */ 797# define SASL_PROC_AUTH 1 /* in process of authenticating */ 798# define SASL_IS_AUTH 2 /* authenticated */ 799 800/* SASL options */ 801# define SASL_AUTH_AUTH 0x10000 /* use auth= only if authenticated */ 802# if SASL >= 20101 803# define SASL_SEC_MASK SASL_SEC_MAXIMUM /* mask for SASL_SEC_* values: sasl.h */ 804# else /* SASL >= 20101 */ 805# define SASL_SEC_MASK 0x0fff /* mask for SASL_SEC_* values: sasl.h */ 806# if (SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 || \ 807 (SASL_SEC_NOACTIVE & SASL_SEC_MASK) == 0 || \ 808 (SASL_SEC_NODICTIONARY & SASL_SEC_MASK) == 0 || \ 809 (SASL_SEC_FORWARD_SECRECY & SASL_SEC_MASK) == 0 || \ 810 (SASL_SEC_NOANONYMOUS & SASL_SEC_MASK) == 0 || \ 811 (SASL_SEC_PASS_CREDENTIALS & SASL_SEC_MASK) == 0 812# error "change SASL_SEC_MASK notify sendmail.org!" 813# endif /* SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 ... */ 814# endif /* SASL >= 20101 */ 815# define MAXOUTLEN 8192 /* length of output buffer, should be 2^n */ 816# if (SASL_AUTH_AUTH & SASL_SEC_MASK) != 0 817# error "change SASL_AUTH_AUTH notify sendmail.org!" 818# endif 819 820/* functions */ 821extern char *intersect __P((char *, char *, SM_RPOOL_T *)); 822extern char *iteminlist __P((char *, char *, char *)); 823# if SASL >= 20000 824extern int proxy_policy __P((sasl_conn_t *, void *, const char *, unsigned, const char *, unsigned, const char *, unsigned, struct propctx *)); 825extern int safesaslfile __P((void *, const char *, sasl_verify_type_t)); 826# else /* SASL >= 20000 */ 827extern int proxy_policy __P((void *, const char *, const char *, const char **, const char **)); 828# if SASL > 10515 829extern int safesaslfile __P((void *, char *, int)); 830# else /* SASL > 10515 */ 831extern int safesaslfile __P((void *, char *)); 832# endif /* SASL > 10515 */ 833# endif /* SASL >= 20000 */ 834extern void stop_sasl_client __P((void)); 835 836/* structure to store authinfo */ 837typedef char *SASL_AI_T[SASL_ENTRIES]; 838 839EXTERN char *AuthMechanisms; /* AUTH mechanisms */ 840EXTERN char *AuthRealm; /* AUTH realm */ 841EXTERN char *SASLInfo; /* file with AUTH info */ 842EXTERN int SASLOpts; /* options for SASL */ 843EXTERN int MaxSLBits; /* max. encryption bits for SASL */ 844#endif /* SASL */ 845 846/* 847** Structure to store macros. 848*/ 849typedef struct 850{ 851 SM_RPOOL_T *mac_rpool; /* resource pool */ 852 BITMAP256 mac_allocated; /* storage has been alloc()? */ 853 char *mac_table[MAXMACROID + 1]; /* macros */ 854} MACROS_T; 855 856EXTERN MACROS_T GlobalMacros; 857 858/* 859** Information about currently open connections to mailers, or to 860** hosts that we have looked up recently. 861*/ 862 863#define MCI struct mailer_con_info 864 865MCI 866{ 867 unsigned long mci_flags; /* flag bits, see below */ 868 short mci_errno; /* error number on last connection */ 869 short mci_herrno; /* h_errno from last DNS lookup */ 870 short mci_exitstat; /* exit status from last connection */ 871 short mci_state; /* SMTP state */ 872 int mci_deliveries; /* delivery attempts for connection */ 873 long mci_maxsize; /* max size this server will accept */ 874 SM_FILE_T *mci_in; /* input side of connection */ 875 SM_FILE_T *mci_out; /* output side of connection */ 876 pid_t mci_pid; /* process id of subordinate proc */ 877 char *mci_phase; /* SMTP phase string */ 878 struct mailer *mci_mailer; /* ptr to the mailer for this conn */ 879 char *mci_host; /* host name */ 880 char *mci_status; /* DSN status to be copied to addrs */ 881 char *mci_rstatus; /* SMTP status to be copied to addrs */ 882 time_t mci_lastuse; /* last usage time */ 883 SM_FILE_T *mci_statfile; /* long term status file */ 884 char *mci_heloname; /* name to use as HELO arg */ 885 long mci_min_by; /* minimum DELIVERBY */ 886 bool mci_retryrcpt; /* tempfail for at least one rcpt */ 887 char *mci_tolist; /* list of valid recipients */ 888 SM_RPOOL_T *mci_rpool; /* resource pool */ 889 int mci_okrcpts; /* number of valid recipients */ 890#if PIPELINING 891 ADDRESS *mci_nextaddr; /* next address for pipelined status */ 892#endif 893#if SASL 894 SASL_AI_T mci_sai; /* authentication info */ 895 bool mci_sasl_auth; /* authenticated? */ 896 int mci_sasl_string_len; 897 char *mci_sasl_string; /* sasl reply string */ 898 char *mci_saslcap; /* SASL list of mechanisms */ 899 sasl_conn_t *mci_conn; /* SASL connection */ 900#endif /* SASL */ 901#if STARTTLS 902 SSL *mci_ssl; /* SSL connection */ 903 tlsi_ctx_T mci_tlsi; 904#endif 905 MACROS_T mci_macro; /* macro definitions */ 906}; 907 908 909/* MCI flag bits */ 910/* XREF: mci.c: MciFlags[]: needs to be kept in sync! */ 911/* 0x00000001 unused, was MCIF_VALID: this entry is valid */ 912#define MCIF_OCC_INCR 0x00000002 /* occ values increased */ 913#define MCIF_CACHED 0x00000004 /* currently in open cache */ 914#define MCIF_ESMTP 0x00000008 /* this host speaks ESMTP */ 915#define MCIF_EXPN 0x00000010 /* EXPN command supported */ 916#define MCIF_SIZE 0x00000020 /* SIZE option supported */ 917#define MCIF_8BITMIME 0x00000040 /* BODY=8BITMIME supported */ 918#define MCIF_7BIT 0x00000080 /* strip this message to 7 bits */ 919/* 0x00000100 unused, was MCIF_MULTSTAT: MAIL11V3: handles MULT status */ 920#define MCIF_INHEADER 0x00000200 /* currently outputting header */ 921#define MCIF_CVT8TO7 0x00000400 /* convert from 8 to 7 bits */ 922#define MCIF_DSN 0x00000800 /* DSN extension supported */ 923#define MCIF_8BITOK 0x00001000 /* OK to send 8 bit characters */ 924#define MCIF_CVT7TO8 0x00002000 /* convert from 7 to 8 bits */ 925#define MCIF_INMIME 0x00004000 /* currently reading MIME header */ 926#define MCIF_AUTH 0x00008000 /* AUTH= supported */ 927#define MCIF_AUTHACT 0x00010000 /* SASL (AUTH) active */ 928#define MCIF_ENHSTAT 0x00020000 /* ENHANCEDSTATUSCODES supported */ 929#define MCIF_PIPELINED 0x00040000 /* PIPELINING supported */ 930#define MCIF_VERB 0x00080000 /* VERB supported */ 931#if STARTTLS 932#define MCIF_TLS 0x00100000 /* STARTTLS supported */ 933#define MCIF_TLSACT 0x00200000 /* STARTTLS active */ 934#else /* STARTTLS */ 935#define MCIF_TLS 0 936#define MCIF_TLSACT 0 937#endif /* STARTTLS */ 938#define MCIF_DLVR_BY 0x00400000 /* DELIVERBY */ 939#if _FFR_IGNORE_EXT_ON_HELO 940# define MCIF_HELO 0x00800000 /* we used HELO: ignore extensions */ 941#endif 942#define MCIF_INLONGLINE 0x01000000 /* in the middle of a long line */ 943#define MCIF_AUTH2 0x02000000 /* got 2 AUTH lines */ 944#define MCIF_ONLY_EHLO 0x10000000 /* use only EHLO in smtpinit */ 945#if _FFR_HANDLE_HDR_RW_TEMPFAIL 946/* an error is not sticky (if put{header,body}() etc fail) */ 947# define MCIF_NOTSTICKY 0x20000000 948#else 949# define MCIF_NOTSTICKY 0 950#endif 951#if USE_EAI 952# define MCIF_EAI 0x40000000 /* SMTPUTF8 supported */ 953#else 954# define MCIF_EAI 0x00000000 /* for MCIF_EXTENS */ 955#endif 956 957#define MCIF_EXTENS (MCIF_EXPN|MCIF_SIZE|MCIF_8BITMIME|MCIF_DSN|MCIF_8BITOK|MCIF_AUTH|MCIF_ENHSTAT|MCIF_PIPELINED|MCIF_VERB|MCIF_TLS|MCIF_DLVR_BY|MCIF_AUTH2|MCIF_EAI) 958 959/* states */ 960/* XREF: deliver.c: mcis[] -- any changes here must be reflected there! */ 961#define MCIS_CLOSED 0 /* no traffic on this connection */ 962#define MCIS_OPENING 1 /* sending initial protocol */ 963#define MCIS_OPEN 2 /* open, initial protocol sent */ 964#define MCIS_MAIL 3 /* MAIL command sent */ 965#define MCIS_RCPT 4 /* RCPT commands being sent */ 966#define MCIS_DATA 5 /* DATA command sent */ 967#define MCIS_QUITING 6 /* running quit protocol */ 968#define MCIS_SSD 7 /* service shutting down */ 969#define MCIS_ERROR 8 /* I/O error on connection */ 970 971/* functions */ 972extern void mci_cache __P((MCI *)); 973extern void mci_close __P((MCI *, char *where)); 974extern void mci_dump __P((SM_FILE_T *, MCI *, bool)); 975extern void mci_dump_all __P((SM_FILE_T *, bool)); 976extern void mci_flush __P((bool, MCI *)); 977extern void mci_clr_extensions __P((MCI *)); 978extern MCI *mci_get __P((char *, MAILER *)); 979extern int mci_lock_host __P((MCI *)); 980extern bool mci_match __P((char *, MAILER *)); 981extern int mci_print_persistent __P((char *, char *)); 982extern int mci_purge_persistent __P((char *, char *)); 983extern MCI **mci_scan __P((MCI *)); 984extern void mci_setstat __P((MCI *, int, char *, char *)); 985extern void mci_store_persistent __P((MCI *)); 986extern int mci_traverse_persistent __P((int (*)(char *, char *), char *)); 987extern void mci_unlock_host __P((MCI *)); 988 989EXTERN int MaxMciCache; /* maximum entries in MCI cache */ 990EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ 991EXTERN time_t MciInfoTimeout; /* how long 'til we retry down hosts */ 992 993/* 994** Header structure. 995** This structure is used internally to store header items. 996*/ 997 998struct header 999{ 1000 char *h_field; /* the name of the field */ 1001 char *h_value; /* the value of that field */ 1002 struct header *h_link; /* the next header */ 1003 unsigned char h_macro; /* include header if macro defined */ 1004 unsigned long h_flags; /* status bits, see below */ 1005 BITMAP256 h_mflags; /* m_flags bits needed */ 1006}; 1007 1008typedef struct header HDR; 1009 1010/* 1011** Header information structure. 1012** Defined in conf.c, this struct declares the header fields 1013** that have some magic meaning. 1014*/ 1015 1016struct hdrinfo 1017{ 1018 char *hi_field; /* the name of the field */ 1019 unsigned long hi_flags; /* status bits, see below */ 1020 char *hi_ruleset; /* validity check ruleset */ 1021}; 1022 1023extern struct hdrinfo HdrInfo[]; 1024 1025/* bits for h_flags and hi_flags */ 1026#define H_EOH 0x00000001 /* field terminates header */ 1027#define H_RCPT 0x00000002 /* contains recipient addresses */ 1028#define H_DEFAULT 0x00000004 /* if another value is found, drop this */ 1029#define H_RESENT 0x00000008 /* this address is a "Resent-..." address */ 1030#define H_CHECK 0x00000010 /* check h_mflags against m_flags */ 1031#define H_ACHECK 0x00000020 /* ditto, but always (not just default) */ 1032#define H_FORCE 0x00000040 /* force this field, even if default */ 1033#define H_TRACE 0x00000080 /* this field contains trace information */ 1034#define H_FROM 0x00000100 /* this is a from-type field */ 1035#define H_VALID 0x00000200 /* this field has a validated value */ 1036#define H_RECEIPTTO 0x00000400 /* field has return receipt info */ 1037#define H_ERRORSTO 0x00000800 /* field has error address info */ 1038#define H_CTE 0x00001000 /* field is a content-transfer-encoding */ 1039#define H_CTYPE 0x00002000 /* this is a content-type field */ 1040#define H_BCC 0x00004000 /* Bcc: header: strip value or delete */ 1041#define H_ENCODABLE 0x00008000 /* field can be RFC 1522 encoded */ 1042#define H_STRIPCOMM 0x00010000 /* header check: strip comments */ 1043#define H_BINDLATE 0x00020000 /* only expand macros at deliver */ 1044#define H_USER 0x00040000 /* header came from the user/SMTP */ 1045#if _FFR_MTA_MODE 1046# define H_ASIS 0x10000000 1047#endif 1048 1049/* bits for chompheader() */ 1050#define CHHDR_DEF 0x0001 /* default header */ 1051#define CHHDR_CHECK 0x0002 /* call ruleset for header */ 1052#define CHHDR_USER 0x0004 /* header from user */ 1053#define CHHDR_QUEUE 0x0008 /* header from queue file */ 1054 1055/* functions */ 1056extern void addheader __P((char *, char *, int, ENVELOPE *, bool)); 1057extern unsigned long chompheader __P((char *, int, HDR **, ENVELOPE *)); 1058extern bool commaize __P((HDR *, char *, bool, MCI *, ENVELOPE *, int)); 1059extern HDR *copyheader __P((HDR *, SM_RPOOL_T *)); 1060extern void eatheader __P((ENVELOPE *, bool, bool)); 1061extern char *hvalue __P((char *, HDR *)); 1062extern void insheader __P((int, char *, char *, int, ENVELOPE *, bool)); 1063extern bool isheader __P((char *)); 1064extern bool putfromline __P((MCI *, ENVELOPE *)); 1065extern void setupheaders __P((void)); 1066 1067/* 1068** Performance monitoring 1069*/ 1070 1071#define TIMERS struct sm_timers 1072 1073TIMERS 1074{ 1075 TIMER ti_overall; /* the whole process */ 1076}; 1077 1078#define PUSHTIMER(l, t) { if (tTd(98, l)) pushtimer(&t); } 1079#define POPTIMER(l, t) { if (tTd(98, l)) poptimer(&t); } 1080 1081/* 1082** Envelope structure. 1083** This structure defines the message itself. There is usually 1084** only one of these -- for the message that we originally read 1085** and which is our primary interest -- but other envelopes can 1086** be generated during processing. For example, error messages 1087** will have their own envelope. 1088*/ 1089 1090struct envelope 1091{ 1092 HDR *e_header; /* head of header list */ 1093 long e_msgpriority; /* adjusted priority of this message */ 1094 time_t e_ctime; /* time message appeared in the queue */ 1095 char *e_to; /* (list of) target person(s) */ 1096 ADDRESS e_from; /* the person it is from */ 1097 char *e_sender; /* e_from.q_paddr w comments stripped */ 1098 char **e_fromdomain; /* the domain part of the sender */ 1099#if USE_EAI 1100 bool e_smtputf8; /* requires SMTPUTF8? */ 1101#endif 1102 ADDRESS *e_sendqueue; /* list of message recipients */ 1103 ADDRESS *e_errorqueue; /* the queue for error responses */ 1104 1105 /* 1106 ** Overflow detection is based on < 0, so don't change this 1107 ** to unsigned. We don't use unsigned and == ULONG_MAX because 1108 ** some libc's don't have strtoul(), see mail_esmtp_args(). 1109 */ 1110 1111 long e_msgsize; /* size of the message in bytes */ 1112 char *e_msgid; /* message id (for logging) */ 1113 unsigned long e_flags; /* flags, see below */ 1114 int e_nrcpts; /* number of recipients */ 1115 short e_class; /* msg class (priority, junk, etc.) */ 1116 short e_hopcount; /* number of times processed */ 1117 short e_nsent; /* number of sends since checkpoint */ 1118 short e_sendmode; /* message send mode */ 1119 short e_errormode; /* error return mode */ 1120 short e_timeoutclass; /* message timeout class */ 1121 bool (*e_puthdr)__P((MCI *, HDR *, ENVELOPE *, int)); 1122 /* function to put header of message */ 1123 bool (*e_putbody)__P((MCI *, ENVELOPE *, char *)); 1124 /* function to put body of message */ 1125 ENVELOPE *e_parent; /* the message this one encloses */ 1126 ENVELOPE *e_sibling; /* the next envelope of interest */ 1127 char *e_bodytype; /* type of message body */ 1128 SM_FILE_T *e_dfp; /* data file */ 1129 char *e_id; /* code for this entry in queue */ 1130#if _FFR_SESSID 1131 char *e_sessid; /* session ID for this envelope */ 1132#endif 1133 int e_qgrp; /* queue group (index into queues) */ 1134 int e_qdir; /* index into queue directories */ 1135 int e_dfqgrp; /* data file queue group index */ 1136 int e_dfqdir; /* data file queue directory index */ 1137 int e_xfqgrp; /* queue group (index into queues) */ 1138 int e_xfqdir; /* index into queue directories (xf) */ 1139 SM_FILE_T *e_xfp; /* transcript file */ 1140 SM_FILE_T *e_lockfp; /* the lock file for this message */ 1141 char *e_message; /* error message; readonly; NULL, 1142 * or allocated from e_rpool */ 1143 char *e_statmsg; /* stat msg (changes per delivery). 1144 * readonly. NULL or allocated from 1145 * e_rpool. */ 1146 char *e_quarmsg; /* why envelope is quarantined */ 1147 char e_qfletter; /* queue file letter on disk */ 1148 char *e_msgboundary; /* MIME-style message part boundary */ 1149 char *e_origrcpt; /* original recipient (one only) */ 1150 char *e_envid; /* envelope id from MAIL FROM: line */ 1151 char *e_status; /* DSN status for this message */ 1152 time_t e_dtime; /* time of last delivery attempt */ 1153 int e_ntries; /* number of delivery attempts */ 1154 dev_t e_dfdev; /* data file device (crash recovery) */ 1155 ino_t e_dfino; /* data file inode (crash recovery) */ 1156 MACROS_T e_macro; /* macro definitions */ 1157 MCI *e_mci; /* connection info */ 1158 char *e_auth_param; /* readonly; NULL or static storage or 1159 * allocated from e_rpool */ 1160#if _FFR_TIMERS 1161 TIMERS e_timers; /* per job timers */ 1162#endif 1163 long e_deliver_by; /* deliver by */ 1164 int e_dlvr_flag; /* deliver by flag */ 1165 SM_RPOOL_T *e_rpool; /* resource pool for this envelope */ 1166 unsigned long e_features; /* server features */ 1167#define ENHSC_LEN 11 1168#if _FFR_MILTER_ENHSC 1169 char e_enhsc[ENHSC_LEN]; /* enhanced status code */ 1170#endif 1171 /* smtp error codes during delivery */ 1172 int e_rcode; /* reply code */ 1173 char e_renhsc[ENHSC_LEN]; /* enhanced status code */ 1174 char *e_text; /* reply text */ 1175#if _FFR_LOG_STAGE 1176 int e_estate; /* protocol state when error happened */ 1177#endif 1178}; 1179 1180#define PRT_NONNEGL(v) ((v) < 0 ? LONG_MAX : (v)) 1181 1182/* values for e_flags */ 1183#define EF_OLDSTYLE 0x00000001L /* use spaces (not commas) in hdrs */ 1184#define EF_INQUEUE 0x00000002L /* this message is fully queued */ 1185#define EF_NO_BODY_RETN 0x00000004L /* omit message body on error */ 1186#define EF_CLRQUEUE 0x00000008L /* disk copy is no longer needed */ 1187#define EF_SENDRECEIPT 0x00000010L /* send a return receipt */ 1188#define EF_FATALERRS 0x00000020L /* fatal errors occurred */ 1189#define EF_DELETE_BCC 0x00000040L /* delete Bcc: headers entirely */ 1190#define EF_RESPONSE 0x00000080L /* this is an error or return receipt */ 1191#define EF_RESENT 0x00000100L /* this message is being forwarded */ 1192#define EF_VRFYONLY 0x00000200L /* verify only (don't expand aliases) */ 1193#define EF_WARNING 0x00000400L /* warning message has been sent */ 1194#define EF_QUEUERUN 0x00000800L /* this envelope is from queue */ 1195#define EF_GLOBALERRS 0x00001000L /* treat errors as global */ 1196#define EF_PM_NOTIFY 0x00002000L /* send return mail to postmaster */ 1197#define EF_METOO 0x00004000L /* send to me too */ 1198#define EF_LOGSENDER 0x00008000L /* need to log the sender */ 1199#define EF_NORECEIPT 0x00010000L /* suppress all return-receipts */ 1200#define EF_HAS8BIT 0x00020000L /* at least one 8-bit char in body */ 1201/* was: EF_NL_NOT_EOL 0x00040000L * don't accept raw LF as EOLine */ 1202/* was: EF_CRLF_NOT_EOL 0x00080000L * don't accept CRLF as EOLine */ 1203#define EF_RET_PARAM 0x00100000L /* RCPT command had RET argument */ 1204#define EF_HAS_DF 0x00200000L /* set when data file is instantiated */ 1205#define EF_IS_MIME 0x00400000L /* really is a MIME message */ 1206#define EF_DONT_MIME 0x00800000L /* never MIME this message */ 1207#define EF_DISCARD 0x01000000L /* discard the message */ 1208#define EF_TOOBIG 0x02000000L /* message is too big */ 1209#define EF_SPLIT 0x04000000L /* envelope has been split */ 1210#define EF_UNSAFE 0x08000000L /* unsafe: read from untrusted source */ 1211#define EF_TOODEEP 0x10000000L /* message is nested too deep */ 1212#define EF_SECURE 0x20000000L /* DNSSEC for currently parsed addr */ 1213#define EF_7BITBODY 0x40000000L /* strip body to 7bit on input */ 1214 1215#define DLVR_NOTIFY 0x01 1216#define DLVR_RETURN 0x02 1217#define DLVR_TRACE 0x10 1218#define IS_DLVR_NOTIFY(e) (((e)->e_dlvr_flag & DLVR_NOTIFY) != 0) 1219#define IS_DLVR_RETURN(e) (((e)->e_dlvr_flag & DLVR_RETURN) != 0) 1220#define IS_DLVR_TRACE(e) (((e)->e_dlvr_flag & DLVR_TRACE) != 0) 1221#define IS_DLVR_BY(e) ((e)->e_dlvr_flag != 0) 1222 1223#define BODYTYPE_NONE (0) 1224#define BODYTYPE_7BIT (1) 1225#define BODYTYPE_8BITMIME (2) 1226#define BODYTYPE_ILLEGAL (-1) 1227#define BODYTYPE_VALID(b) ((b) == BODYTYPE_7BIT || (b) == BODYTYPE_8BITMIME) 1228 1229extern ENVELOPE BlankEnvelope; 1230 1231/* functions */ 1232extern void clearenvelope __P((ENVELOPE *, bool, SM_RPOOL_T *)); 1233extern int dropenvelope __P((ENVELOPE *, bool, bool)); 1234extern ENVELOPE *newenvelope __P((ENVELOPE *, ENVELOPE *, SM_RPOOL_T *)); 1235extern void clrsessenvelope __P((ENVELOPE *)); 1236extern void printenvflags __P((ENVELOPE *)); 1237extern bool putbody __P((MCI *, ENVELOPE *, char *)); 1238extern bool putheader __P((MCI *, HDR *, ENVELOPE *, int)); 1239 1240/* 1241** Message priority classes. 1242** 1243** The message class is read directly from the Priority: header 1244** field in the message. 1245** 1246** CurEnv->e_msgpriority is the number of bytes in the message plus 1247** the creation time (so that jobs ``tend'' to be ordered correctly), 1248** adjusted by the message class, the number of recipients, and the 1249** amount of time the message has been sitting around. This number 1250** is used to order the queue. Higher values mean LOWER priority. 1251** 1252** Each priority class point is worth WkClassFact priority points; 1253** each recipient is worth WkRecipFact priority points. Each time 1254** we reprocess a message the priority is adjusted by WkTimeFact. 1255** WkTimeFact should normally decrease the priority so that jobs 1256** that have historically failed will be run later; thanks go to 1257** Jay Lepreau at Utah for pointing out the error in my thinking. 1258** 1259** The "class" is this number, unadjusted by the age or size of 1260** this message. Classes with negative representations will have 1261** error messages thrown away if they are not local. 1262*/ 1263 1264struct priority 1265{ 1266 char *pri_name; /* external name of priority */ 1267 int pri_val; /* internal value for same */ 1268}; 1269 1270EXTERN int NumPriorities; /* pointer into Priorities */ 1271EXTERN struct priority Priorities[MAXPRIORITIES]; 1272 1273/* 1274** Rewrite rules. 1275*/ 1276 1277struct rewrite 1278{ 1279 char **r_lhs; /* pattern match */ 1280 char **r_rhs; /* substitution value */ 1281 struct rewrite *r_next;/* next in chain */ 1282 int r_line; /* rule line in sendmail.cf */ 1283}; 1284 1285/* 1286** Special characters in rewriting rules. 1287** These are used internally only. 1288** The COND* rules are actually used in macros rather than in 1289** rewriting rules, but are given here because they 1290** cannot conflict. 1291*/ 1292 1293/* 1294** "out of band" indicator 1295** sm/sendmail.h #define METAQUOTE ((unsigned char)0377) 1296** quotes the next octet 1297** range: ((ch) & 0340) == 0200 1298** see #define SM_MM_QUOTE(ch) in libsm/util.c 1299*/ 1300 1301/* left hand side items */ 1302#define MATCHZANY ((unsigned char)0220) /* match zero or more tokens */ 1303#define MATCHANY ((unsigned char)0221) /* match one or more tokens */ 1304#define MATCHONE ((unsigned char)0222) /* match exactly one token */ 1305#define MATCHCLASS ((unsigned char)0223) /* match one token in a class */ 1306#define MATCHNCLASS ((unsigned char)0224) /* match tokens not in class */ 1307 1308/* right hand side items */ 1309#define MATCHREPL ((unsigned char)0225) /* RHS replacement for above */ 1310#define CANONNET ((unsigned char)0226) /* canonical net, next token */ 1311#define CANONHOST ((unsigned char)0227) /* canonical host, next token */ 1312#define CANONUSER ((unsigned char)0230) /* canonical user, next N tokens */ 1313#define CALLSUBR ((unsigned char)0231) /* call another rewriting set */ 1314 1315/* conditionals in macros (anywhere) */ 1316#define CONDIF ((unsigned char)0232) /* conditional if-then */ 1317#define CONDELSE ((unsigned char)0233) /* conditional else */ 1318#define CONDFI ((unsigned char)0234) /* conditional fi */ 1319 1320/* bracket characters for RHS host name lookup */ 1321#define HOSTBEGIN ((unsigned char)0235) /* hostname lookup begin */ 1322#define HOSTEND ((unsigned char)0236) /* hostname lookup end */ 1323 1324/* bracket characters for RHS generalized lookup */ 1325#define LOOKUPBEGIN ((unsigned char)0205) /* generalized lookup begin */ 1326#define LOOKUPEND ((unsigned char)0206) /* generalized lookup end */ 1327 1328/* macro substitution characters (anywhere) */ 1329#define MACROEXPAND ((unsigned char)0201) /* macro expansion */ 1330#define MACRODEXPAND ((unsigned char)0202) /* deferred macro expansion */ 1331 1332/* to make the code clearer */ 1333#define MATCHZERO CANONHOST 1334 1335#define MAXMATCH 9 /* max params per rewrite */ 1336#define MAX_MAP_ARGS 10 /* max arguments for map */ 1337 1338/* external <==> internal mapping table */ 1339struct metamac 1340{ 1341 char metaname; /* external code (after $) */ 1342 unsigned char metaval; /* internal code (as above) */ 1343}; 1344 1345/* values for macros with external names only */ 1346#define MID_OPMODE 0202 /* operation mode */ 1347 1348/* functions */ 1349#if SM_HEAP_CHECK 1350extern void 1351macdefine_tagged __P(( 1352 MACROS_T *_mac, 1353 ARGCLASS_T _vclass, 1354 int _id, 1355 char *_value, 1356 char *_file, 1357 int _line, 1358 int _group)); 1359# define macdefine(mac,c,id,v) \ 1360 macdefine_tagged(mac,c,id,v,__FILE__,__LINE__,sm_heap_group()) 1361#else /* SM_HEAP_CHECK */ 1362extern void 1363macdefine __P(( 1364 MACROS_T *_mac, 1365 ARGCLASS_T _vclass, 1366 int _id, 1367 char *_value)); 1368# define macdefine_tagged(mac,c,id,v,file,line,grp) macdefine(mac,c,id,v) 1369#endif /* SM_HEAP_CHECK */ 1370extern void macset __P((MACROS_T *, int, char *)); 1371#define macget(mac, i) (mac)->mac_table[i] 1372extern void expand __P((char *, char *, size_t, ENVELOPE *)); 1373extern int macid_parse __P((char *, char **)); 1374#define macid(name) macid_parse(name, NULL) 1375extern char *macname __P((int)); 1376extern char *macvalue __P((int, ENVELOPE *)); 1377extern void mactabclear __P((MACROS_T *)); 1378extern int rscheck __P((char *, const char *, const char *, ENVELOPE *, int, int, const char *, const char *, ADDRESS *, char **)); 1379extern int rscap __P((char *, char *, char *, ENVELOPE *, char ***, char *, int)); 1380extern void setclass __P((int, char *)); 1381extern int strtorwset __P((char *, char **, int)); 1382extern char *translate_dollars __P((char *, char *, int *)); 1383extern bool wordinclass __P((char *, int)); 1384 1385/* 1386** Name canonification short circuit. 1387** 1388** If the name server for a host is down, the process of trying to 1389** canonify the name can hang. This is similar to (but alas, not 1390** identical to) looking up the name for delivery. This stab type 1391** caches the result of the name server lookup so we don't hang 1392** multiple times. 1393*/ 1394 1395#define NAMECANON struct _namecanon 1396 1397NAMECANON 1398{ 1399 short nc_errno; /* cached errno */ 1400 short nc_herrno; /* cached h_errno */ 1401 short nc_stat; /* cached exit status code */ 1402 short nc_flags; /* flag bits */ 1403 char *nc_cname; /* the canonical name */ 1404 time_t nc_exp; /* entry expires at */ 1405}; 1406 1407/* values for nc_flags */ 1408#define NCF_VALID 0x0001 /* entry valid */ 1409#define NCF_VALID 0x0001 /* entry valid */ 1410#define NCF_SECURE 0x0002 /* entry secure (DNSSEC) */ 1411 1412/* hostsignature structure */ 1413 1414struct hostsig_t 1415{ 1416 char *hs_sig; /* hostsignature */ 1417 time_t hs_exp; /* entry expires at */ 1418}; 1419 1420typedef struct hostsig_t HOSTSIG_T; 1421 1422/* 1423** The standard udp packet size PACKETSZ (512) is not sufficient for some 1424** nameserver answers containing very many resource records. The resolver 1425** may switch to tcp and retry if it detects udp packet overflow. 1426** Also note that the resolver routines res_query and res_search return 1427** the size of the *un*truncated answer in case the supplied answer buffer 1428** it not big enough to accommodate the entire answer. 1429*/ 1430 1431#ifndef MAXPACKET 1432# define MAXPACKET 8192 /* max packet size used internally by BIND */ 1433#endif 1434 1435/* 1436** The resolver functions res_{send,query,querydomain} expect the 1437** answer buffer to be aligned, but some versions of gcc4 reverse 1438** 25 years of history and no longer align char buffers on the 1439** stack, resulting in crashes on strict-alignment platforms. Use 1440** this union when putting the buffer on the stack to force the 1441** alignment, then cast to (HEADER *) or (unsigned char *) as needed. 1442*/ 1443typedef union 1444{ 1445 HEADER qb1; 1446 unsigned char qb2[MAXPACKET]; 1447} querybuf; 1448 1449 1450/* result values for getcanonname() etc */ 1451#define HOST_NOTFOUND 0 1452#define HOST_OK 1 1453#define HOST_SECURE 2 1454 1455/* flags for getmxrr() */ 1456#define DROPLOCALHOST 0x01 1457#define TRYFALLBACK 0x02 1458#define ISAD 0x04 1459 1460/* RFC7505: Null MX */ 1461#define NULLMX (-2) 1462 1463/* functions */ 1464extern int getcanonname __P((char *, int, bool, int *)); 1465extern int getmxrr __P((char *, char **, unsigned short *, unsigned int, int *, int *, int, int *)); 1466extern char *hostsignature __P((MAILER *, char *, bool, unsigned long *)); 1467extern int getfallbackmxrr __P((char *)); 1468 1469/* 1470** Mapping functions 1471** 1472** These allow arbitrary mappings in the config file. The idea 1473** (albeit not the implementation) comes from IDA sendmail. 1474*/ 1475 1476#define MAPCLASS struct _mapclass 1477#define MAP struct _map 1478#define MAXMAPACTIONS 5 /* size of map_actions array */ 1479 1480 1481/* 1482** An actual map. 1483*/ 1484 1485MAP 1486{ 1487 MAPCLASS *map_class; /* the class of this map */ 1488 MAPCLASS *map_orgclass; /* the original class of this map */ 1489 char *map_mname; /* name of this map */ 1490 long map_mflags; /* flags, see below */ 1491 char *map_file; /* the (nominal) filename */ 1492 ARBPTR_T map_db1; /* the open database ptr */ 1493 ARBPTR_T map_db2; /* an "extra" database pointer */ 1494 char *map_keycolnm; /* key column name */ 1495 char *map_valcolnm; /* value column name */ 1496 unsigned char map_keycolno; /* key column number */ 1497 unsigned char map_valcolno; /* value column number */ 1498 char map_coldelim; /* column delimiter */ 1499 char map_spacesub; /* spacesub */ 1500 char *map_app; /* to append to successful matches */ 1501 char *map_tapp; /* to append to "tempfail" matches */ 1502 char *map_domain; /* the (nominal) NIS domain */ 1503 char *map_rebuild; /* program to run to do auto-rebuild */ 1504 time_t map_mtime; /* last database modification time */ 1505 time_t map_timeout; /* timeout for map accesses */ 1506 int map_retry; /* # of retries for map accesses */ 1507 pid_t map_pid; /* PID of process which opened map */ 1508 int map_lockfd; /* auxiliary lock file descriptor */ 1509 MAP *map_stack[MAXMAPSTACK]; /* list for stacked maps */ 1510 short map_return[MAXMAPACTIONS]; /* return bitmaps for stacked maps */ 1511}; 1512 1513#if _FFR_DYN_CLASS 1514# define map_tag map_domain /* overload map field */ 1515#endif 1516 1517/* bit values for map_mflags */ 1518#define MF_VALID 0x00000001 /* this entry is valid */ 1519#define MF_INCLNULL 0x00000002 /* include null byte in key */ 1520#define MF_OPTIONAL 0x00000004 /* don't complain if map not found */ 1521#define MF_NOFOLDCASE 0x00000008 /* don't fold case in keys */ 1522#define MF_MATCHONLY 0x00000010 /* don't use the map value */ 1523#define MF_OPEN 0x00000020 /* this entry is open */ 1524#define MF_WRITABLE 0x00000040 /* open for writing */ 1525#define MF_ALIAS 0x00000080 /* this is an alias file */ 1526#define MF_TRY0NULL 0x00000100 /* try with no null byte */ 1527#define MF_TRY1NULL 0x00000200 /* try with the null byte */ 1528#define MF_LOCKED 0x00000400 /* map is locked (RDWR) */ 1529/* that means: no extra lockfile() calls must be made (in *map_lookup()) */ 1530#define MF_ALIASWAIT 0x00000800 /* alias map in aliaswait state */ 1531#define MF_IMPL_HASH 0x00001000 /* implicit: underlying hash database */ 1532#define MF_IMPL_NDBM 0x00002000 /* implicit: underlying NDBM database */ 1533#define MF_IMPL_CDB 0x00004000 /* implicit: underlying CDB database */ 1534#define MF_APPEND 0x00008000 /* append new entry on rebuild */ 1535#define MF_KEEPQUOTES 0x00010000 /* don't dequote key before lookup */ 1536#define MF_NODEFER 0x00020000 /* don't defer if map lookup fails */ 1537#define MF_REGEX_NOT 0x00040000 /* regular expression negation */ 1538#define MF_DEFER 0x00080000 /* don't lookup map in defer mode */ 1539#define MF_SINGLEMATCH 0x00100000 /* successful only if match one key */ 1540#define MF_SINGLEDN 0x00200000 /* only one match, but multi values */ 1541#define MF_FILECLASS 0x00400000 /* this is a file class map */ 1542#define MF_OPENBOGUS 0x00800000 /* open failed, don't call map_close */ 1543#define MF_CLOSING 0x01000000 /* map is being closed */ 1544#define MF_SECURE 0x02000000 /* DNSSEC result is "secure" */ 1545#define MF_KEEPXFMT 0x04000000 /* keep [x] format */ 1546#define MF_CHKED_CHGD 0x08000000 /* checked whether underlying map changed */ 1547 1548#define DYNOPENMAP(map) \ 1549 do \ 1550 { \ 1551 if (!bitset(MF_OPEN, (map)->map_mflags)) \ 1552 { \ 1553 if (!openmap(map)) \ 1554 return NULL; \ 1555 } \ 1556 } while (0) 1557 1558 1559/* indices for map_actions */ 1560#define MA_NOTFOUND 0 /* member map returned "not found" */ 1561#define MA_UNAVAIL 1 /* member map is not available */ 1562#define MA_TRYAGAIN 2 /* member map returns temp failure */ 1563 1564/* 1565** The class of a map -- essentially the functions to call 1566*/ 1567 1568MAPCLASS 1569{ 1570 char *map_cname; /* name of this map class */ 1571 char *map_ext; /* extension for database file */ 1572 short map_cflags; /* flag bits, see below */ 1573 bool (*map_parse)__P((MAP *, char *)); 1574 /* argument parsing function */ 1575 char *(*map_lookup)__P((MAP *, char *, char **, int *)); 1576 /* lookup function */ 1577 void (*map_store)__P((MAP *, char *, char *)); 1578 /* store function */ 1579 bool (*map_open)__P((MAP *, int)); 1580 /* open function */ 1581 void (*map_close)__P((MAP *)); 1582 /* close function */ 1583}; 1584 1585/* bit values for map_cflags */ 1586#define MCF_ALIASOK 0x0001 /* can be used for aliases */ 1587/* #define MCF_ALIASONLY 0x0002 * usable only for aliases */ 1588#define MCF_REBUILDABLE 0x0004 /* can rebuild alias files */ 1589#define MCF_OPTFILE 0x0008 /* file name is optional */ 1590#define MCF_NOTPERSIST 0x0010 /* don't keep map open all the time */ 1591 1592/* functions */ 1593extern void closemaps __P((bool)); 1594extern bool impl_map_open __P((MAP *, int)); 1595extern void initmaps __P((void)); 1596extern MAP *makemapentry __P((char *)); 1597extern void maplocaluser __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 1598extern char *map_rewrite __P((MAP *, const char *, size_t, char **)); 1599#if NETINFO 1600extern char *ni_propval __P((char *, char *, char *, char *, int)); 1601#endif 1602extern bool openmap __P((MAP *)); 1603extern int udbexpand __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 1604#if USERDB 1605extern void _udbx_close __P((void)); 1606extern char *udbsender __P((char *, SM_RPOOL_T *)); 1607#endif 1608#if _FFR_MAP_CHK_FILE > 1 1609extern void maps_reset_chged __P((const char *)); 1610#else 1611# define maps_reset_chged(msg) 1612#endif 1613 1614/* 1615** LDAP related items 1616*/ 1617#if LDAPMAP 1618/* struct defining LDAP Auth Methods */ 1619struct lamvalues 1620{ 1621 char *lam_name; /* name of LDAP auth method */ 1622 int lam_code; /* numeric code */ 1623}; 1624 1625/* struct defining LDAP Alias Dereferencing */ 1626struct ladvalues 1627{ 1628 char *lad_name; /* name of LDAP alias dereferencing method */ 1629 int lad_code; /* numeric code */ 1630}; 1631 1632/* struct defining LDAP Search Scope */ 1633struct lssvalues 1634{ 1635 char *lss_name; /* name of LDAP search scope */ 1636 int lss_code; /* numeric code */ 1637}; 1638 1639/* functions */ 1640extern void ldapmap_set_defaults __P((char *)); 1641#endif /* LDAPMAP */ 1642 1643/* 1644** PH related items 1645*/ 1646 1647#if PH_MAP 1648 1649# include <phclient.h> 1650 1651struct ph_map_struct 1652{ 1653 char *ph_servers; /* list of ph servers */ 1654 char *ph_field_list; /* list of fields to search for match */ 1655 PH *ph; /* PH server handle */ 1656 int ph_fastclose; /* send "quit" command on close */ 1657 time_t ph_timeout; /* timeout interval */ 1658}; 1659typedef struct ph_map_struct PH_MAP_STRUCT; 1660 1661#endif /* PH_MAP */ 1662 1663/* 1664** Regular UNIX sockaddrs are too small to handle ISO addresses, so 1665** we are forced to declare a supertype here. 1666*/ 1667 1668#if NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 1669union bigsockaddr 1670{ 1671 struct sockaddr sa; /* general version */ 1672# if NETUNIX 1673 struct sockaddr_un sunix; /* UNIX family */ 1674# endif 1675# if NETINET 1676 struct sockaddr_in sin; /* INET family */ 1677# endif 1678# if NETINET6 1679 struct sockaddr_in6 sin6; /* INET/IPv6 */ 1680# endif 1681# if NETISO 1682 struct sockaddr_iso siso; /* ISO family */ 1683# endif 1684# if NETNS 1685 struct sockaddr_ns sns; /* XNS family */ 1686# endif 1687# if NETX25 1688 struct sockaddr_x25 sx25; /* X.25 family */ 1689# endif 1690}; 1691 1692# define SOCKADDR union bigsockaddr 1693 1694/* functions */ 1695extern char *anynet_ntoa __P((SOCKADDR *)); 1696# if NETINET6 1697extern char *anynet_ntop __P((struct in6_addr *, char *, size_t)); 1698extern int anynet_pton __P((int, const char *, void *)); 1699# endif 1700extern char *hostnamebyanyaddr __P((SOCKADDR *)); 1701extern char *validate_connection __P((SOCKADDR *, char *, ENVELOPE *)); 1702# if SASL >= 20000 1703extern bool iptostring __P((SOCKADDR *, SOCKADDR_LEN_T, char *, unsigned)); 1704# endif 1705 1706#endif /* NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 */ 1707 1708/* 1709** Process List (proclist) 1710*/ 1711 1712#define NO_PID ((pid_t) 0) 1713#ifndef PROC_LIST_SEG 1714# define PROC_LIST_SEG 32 /* number of pids to alloc at a time */ 1715#endif 1716 1717/* process types */ 1718#define PROC_NONE 0 1719#define PROC_DAEMON 1 1720#define PROC_DAEMON_CHILD 2 1721#define PROC_QUEUE 3 1722#define PROC_QUEUE_CHILD 3 1723#define PROC_CONTROL 4 1724#define PROC_CONTROL_CHILD 5 1725#define PROC_QM 6 1726 1727/* functions */ 1728extern void proc_list_add __P((pid_t, char *, int, int, int, SOCKADDR *)); 1729extern void proc_list_clear __P((void)); 1730extern void proc_list_display __P((SM_FILE_T *, char *)); 1731extern void proc_list_drop __P((pid_t, int, int *)); 1732extern void proc_list_probe __P((void)); 1733extern void proc_list_set __P((pid_t, char *)); 1734extern void proc_list_signal __P((int, int)); 1735 1736/* 1737** Symbol table definitions 1738*/ 1739 1740struct symtab 1741{ 1742 char *s_name; /* name to be entered */ 1743 short s_symtype; /* general type (see below) */ 1744 struct symtab *s_next; /* pointer to next in chain */ 1745 union 1746 { 1747 BITMAP256 sv_class; /* bit-map of word classes */ 1748 MAILER *sv_mailer; /* pointer to mailer */ 1749 char *sv_alias; /* alias */ 1750 MAPCLASS sv_mapclass; /* mapping function class */ 1751 MAP sv_map; /* mapping function */ 1752 HOSTSIG_T sv_hostsig; /* host signature */ 1753 MCI sv_mci; /* mailer connection info */ 1754 NAMECANON sv_namecanon; /* canonical name cache */ 1755 int sv_macro; /* macro name => id mapping */ 1756 int sv_ruleset; /* ruleset index */ 1757 struct hdrinfo sv_header; /* header metainfo */ 1758 char *sv_service[MAXMAPSTACK]; /* service switch */ 1759#if LDAPMAP 1760 MAP *sv_lmap; /* Maps for LDAP connection */ 1761#endif 1762#if SOCKETMAP 1763 MAP *sv_socketmap; /* Maps for SOCKET connection */ 1764#endif 1765#if MILTER 1766 struct milter *sv_milter; /* milter filter name */ 1767#endif 1768 QUEUEGRP *sv_queue; /* pointer to queue */ 1769#if DANE 1770 dane_tlsa_P sv_tlsa; /* pointer to TLSA RRs */ 1771#endif 1772#if _FFR_DYN_CLASS 1773 MAP sv_dynclass; /* map for dynamic class */ 1774#endif 1775 } s_value; 1776}; 1777 1778typedef struct symtab STAB; 1779 1780/* symbol types */ 1781#define ST_UNDEF 0 /* undefined type */ 1782#define ST_CLASS 1 /* class map */ 1783/* #define ST_unused 2 UNUSED */ 1784#define ST_MAILER 3 /* a mailer header */ 1785#define ST_ALIAS 4 /* an alias */ 1786#define ST_MAPCLASS 5 /* mapping function class */ 1787#define ST_MAP 6 /* mapping function */ 1788#define ST_HOSTSIG 7 /* host signature */ 1789#define ST_NAMECANON 8 /* cached canonical name */ 1790#define ST_MACRO 9 /* macro name to id mapping */ 1791#define ST_RULESET 10 /* ruleset index */ 1792#define ST_SERVICE 11 /* service switch entry */ 1793#define ST_HEADER 12 /* special header flags */ 1794#if LDAPMAP 1795# define ST_LMAP 13 /* List head of maps for LDAP connection */ 1796#endif 1797#if MILTER 1798# define ST_MILTER 14 /* milter filter */ 1799#endif 1800#define ST_QUEUE 15 /* a queue entry */ 1801 1802#if SOCKETMAP 1803# define ST_SOCKETMAP 16 /* List head of maps for SOCKET connection */ 1804#endif 1805 1806#if DANE 1807# define ST_TLSA_RR 17 /* cached TLSA RRs */ 1808#endif 1809#if _FFR_DYN_CLASS 1810# define ST_DYNMAP 18 /* dynamic map */ 1811#endif 1812 1813/* This entry must be last */ 1814#define ST_MCI 19 /* mailer connection info (offset) */ 1815 1816#define s_class s_value.sv_class 1817#define s_mailer s_value.sv_mailer 1818#define s_alias s_value.sv_alias 1819#define s_mci s_value.sv_mci 1820#define s_mapclass s_value.sv_mapclass 1821#define s_hostsig s_value.sv_hostsig 1822#define s_map s_value.sv_map 1823#define s_namecanon s_value.sv_namecanon 1824#define s_macro s_value.sv_macro 1825#define s_ruleset s_value.sv_ruleset 1826#define s_service s_value.sv_service 1827#define s_header s_value.sv_header 1828#if LDAPMAP 1829# define s_lmap s_value.sv_lmap 1830#endif 1831#if SOCKETMAP 1832# define s_socketmap s_value.sv_socketmap 1833#endif 1834#if MILTER 1835# define s_milter s_value.sv_milter 1836#endif 1837#define s_quegrp s_value.sv_queue 1838#if DANE 1839# define s_tlsa s_value.sv_tlsa 1840#endif 1841#if _FFR_DYN_CLASS 1842# define s_dynclass s_value.sv_dynclass 1843#endif 1844 1845/* opcodes to stab */ 1846#define ST_FIND 0 /* find entry */ 1847#define ST_ENTER 1 /* enter if not there */ 1848 1849/* functions */ 1850extern STAB *stab __P((char *, int, int)); 1851extern void stabapply __P((void (*)(STAB *, int), int)); 1852 1853/* 1854** Operation, send, error, and MIME modes 1855** 1856** The operation mode describes the basic operation of sendmail. 1857** This can be set from the command line, and is "send mail" by 1858** default. 1859** 1860** The send mode tells how to send mail. It can be set in the 1861** configuration file. Its setting determines how quickly the 1862** mail will be delivered versus the load on your system. If the 1863** -v (verbose) flag is given, it will be forced to SM_DELIVER 1864** mode. 1865** 1866** The error mode tells how to return errors. 1867*/ 1868 1869#define MD_DELIVER 'm' /* be a mail sender */ 1870#define MD_SMTP 's' /* run SMTP on standard input */ 1871#define MD_ARPAFTP 'a' /* obsolete ARPANET mode (Grey Book) */ 1872#define MD_DAEMON 'd' /* run as a daemon */ 1873#define MD_FGDAEMON 'D' /* run daemon in foreground */ 1874#define MD_LOCAL 'l' /* like daemon, but localhost only */ 1875#define MD_VERIFY 'v' /* verify: don't collect or deliver */ 1876#define MD_TEST 't' /* test mode: resolve addrs only */ 1877#define MD_INITALIAS 'i' /* initialize alias database */ 1878#define MD_PRINT 'p' /* print the queue */ 1879#define MD_PRINTNQE 'P' /* print number of entries in queue */ 1880#define MD_FREEZE 'z' /* freeze the configuration file */ 1881#define MD_HOSTSTAT 'h' /* print persistent host stat info */ 1882#define MD_PURGESTAT 'H' /* purge persistent host stat info */ 1883#define MD_QUEUERUN 'q' /* queue run */ 1884#define MD_CHECKCONFIG 'C' /* check configuration file */ 1885#define MD_SHOWCONFIG 'O' /* show cf options */ 1886 1887#if _FFR_LOCAL_DAEMON 1888EXTERN bool LocalDaemon; 1889# if NETINET6 1890EXTERN bool V6LoopbackAddrFound; /* found an IPv6 loopback address */ 1891# define SETV6LOOPBACKADDRFOUND(sa) \ 1892 do \ 1893 { \ 1894 if (isloopback(sa)) \ 1895 V6LoopbackAddrFound = true; \ 1896 } while (0) 1897# endif /* NETINET6 */ 1898#else /* _FFR_LOCAL_DAEMON */ 1899# define LocalDaemon false 1900# define V6LoopbackAddrFound false 1901# define SETV6LOOPBACKADDRFOUND(sa) 1902#endif /* _FFR_LOCAL_DAEMON */ 1903 1904/* Note: see also include/sendmail/pathnames.h: GET_CLIENT_CF */ 1905 1906/* values for e_sendmode -- send modes */ 1907#define SM_DELIVER 'i' /* interactive delivery */ 1908#if _FFR_PROXY 1909# define SM_PROXY_REQ 's' /* synchronous mode requested */ 1910# define SM_PROXY 'S' /* synchronous mode activated */ 1911#endif 1912#define SM_FORK 'b' /* deliver in background */ 1913#if _FFR_DM_ONE 1914# define SM_DM_ONE 'o' /* deliver first TA in background, then queue */ 1915#endif 1916#if _FFR_DMTRIGGER 1917# define SM_TRIGGER 't' /* queue and tell "queue manager" */ 1918# define IS_SM_TRIGGER(m) ((m) == SM_TRIGGER) 1919#else 1920# define IS_SM_TRIGGER(m) false 1921#endif 1922#define SM_QUEUE 'q' /* queue, don't deliver */ 1923#define SM_DEFER 'd' /* defer map lookups as well as queue */ 1924#define SM_VERIFY 'v' /* verify only (used internally) */ 1925#define DM_NOTSET (-1) /* DeliveryMode (per daemon) option not set */ 1926#if _FFR_PROXY 1927# define SM_IS_INTERACTIVE(m) ((m) == SM_DELIVER || (m) == SM_PROXY_REQ || (m) == SM_PROXY) 1928#else 1929# define SM_IS_INTERACTIVE(m) ((m) == SM_DELIVER) 1930#endif 1931 1932#define WILL_BE_QUEUED(m) ((m) == SM_QUEUE || (m) == SM_DEFER || IS_SM_TRIGGER(m)) 1933 1934/* used only as a parameter to sendall */ 1935#define SM_DEFAULT '\0' /* unspecified, use SendMode */ 1936 1937/* functions */ 1938extern void set_delivery_mode __P((int, ENVELOPE *)); 1939 1940/* values for e_errormode -- error handling modes */ 1941#define EM_PRINT 'p' /* print errors */ 1942#define EM_MAIL 'm' /* mail back errors */ 1943#define EM_WRITE 'w' /* write back errors */ 1944#define EM_BERKNET 'e' /* special berknet processing */ 1945#define EM_QUIET 'q' /* don't print messages (stat only) */ 1946 1947 1948/* bit values for MimeMode */ 1949#define MM_CVTMIME 0x0001 /* convert 8 to 7 bit MIME */ 1950#define MM_PASS8BIT 0x0002 /* just send 8 bit data blind */ 1951#define MM_MIME8BIT 0x0004 /* convert 8-bit data to MIME */ 1952 1953 1954/* how to handle messages without any recipient addresses */ 1955#define NRA_NO_ACTION 0 /* just leave it as is */ 1956#define NRA_ADD_TO 1 /* add To: header */ 1957#define NRA_ADD_APPARENTLY_TO 2 /* add Apparently-To: header */ 1958#define NRA_ADD_BCC 3 /* add empty Bcc: header */ 1959#define NRA_ADD_TO_UNDISCLOSED 4 /* add To: undisclosed:; header */ 1960 1961 1962/* flags to putxline */ 1963#define PXLF_NOTHINGSPECIAL 0 /* no special mapping */ 1964#define PXLF_MAPFROM 0x0001 /* map From_ to >From_ */ 1965#define PXLF_STRIP8BIT 0x0002 /* strip 8th bit */ 1966#define PXLF_HEADER 0x0004 /* map newlines in headers */ 1967#define PXLF_NOADDEOL 0x0008 /* if EOL not present, don't add one */ 1968#define PXLF_STRIPMQUOTE 0x0010 /* strip METAQUOTEs */ 1969 1970/* 1971** Privacy flags 1972** These are bit values for the PrivacyFlags word. 1973*/ 1974 1975#define PRIV_PUBLIC 0 /* what have I got to hide? */ 1976#define PRIV_NEEDMAILHELO 0x00000001 /* insist on HELO for MAIL */ 1977#define PRIV_NEEDEXPNHELO 0x00000002 /* insist on HELO for EXPN */ 1978#define PRIV_NEEDVRFYHELO 0x00000004 /* insist on HELO for VRFY */ 1979#define PRIV_NOEXPN 0x00000008 /* disallow EXPN command */ 1980#define PRIV_NOVRFY 0x00000010 /* disallow VRFY command */ 1981#define PRIV_AUTHWARNINGS 0x00000020 /* flag possible auth probs */ 1982#define PRIV_NOVERB 0x00000040 /* disallow VERB command */ 1983#define PRIV_RESTRICTMAILQ 0x00010000 /* restrict mailq command */ 1984#define PRIV_RESTRICTQRUN 0x00020000 /* restrict queue run */ 1985#define PRIV_RESTRICTEXPAND 0x00040000 /* restrict alias/forward expansion */ 1986#define PRIV_NOETRN 0x00080000 /* disallow ETRN command */ 1987#define PRIV_NOBODYRETN 0x00100000 /* do not return bodies on bounces */ 1988#define PRIV_NORECEIPTS 0x00200000 /* disallow return receipts */ 1989#define PRIV_NOACTUALRECIPIENT 0x00400000 /* no X-Actual-Recipient in DSNs */ 1990#define PRIV_NOREFLECTION 0x00800000 /* do not show original command */ 1991 1992/* don't give no info, anyway, anyhow (in the main SMTP transaction) */ 1993#define PRIV_GOAWAY (0x0000ffff|PRIV_NOREFLECTION) 1994 1995/* struct defining such things */ 1996struct prival 1997{ 1998 char *pv_name; /* name of privacy flag */ 1999 unsigned long pv_flag; /* numeric level */ 2000}; 2001 2002EXTERN unsigned long PrivacyFlags; /* privacy flags */ 2003 2004 2005/* 2006** Flags passed to remotename, parseaddr, allocaddr, and buildaddr. 2007*/ 2008 2009#define RF_SENDERADDR 0x001 /* this is a sender address */ 2010#define RF_HEADERADDR 0x002 /* this is a header address */ 2011#define RF_CANONICAL 0x004 /* strip comment information */ 2012#define RF_ADDDOMAIN 0x008 /* OK to do domain extension */ 2013#define RF_COPYPARSE 0x010 /* copy parsed user & host */ 2014#define RF_COPYPADDR 0x020 /* copy print address */ 2015#define RF_COPYALL (RF_COPYPARSE|RF_COPYPADDR) 2016#define RF_COPYNONE 0 2017#define RF_RM_ADDR 0x040 /* address to be removed */ 2018#define RF_IS_EXT 0x100 /* address is in external format */ 2019 2020/* 2021** Flags passed to rscheck 2022*/ 2023 2024#define RSF_RMCOMM 0x0001 /* strip comments */ 2025#define RSF_UNSTRUCTURED 0x0002 /* unstructured, ignore syntax errors */ 2026#define RSF_COUNT 0x0004 /* count rejections (statistics)? */ 2027#define RSF_ADDR 0x0008 /* reassemble address */ 2028#define RSF_STRING 0x0010 /* reassemble address as string */ 2029#define RSF_STATUS 0x0020 /* log "status" instead of "reject" */ 2030 2031/* 2032** Flags passed to mime8to7 and putheader. 2033*/ 2034 2035#define M87F_OUTER 0 /* outer context */ 2036#define M87F_NO8BIT 0x0001 /* can't have 8-bit in this section */ 2037#define M87F_DIGEST 0x0002 /* processing multipart/digest */ 2038#define M87F_NO8TO7 0x0004 /* don't do 8->7 bit conversions */ 2039 2040/* functions */ 2041extern bool mime7to8 __P((MCI *, HDR *, ENVELOPE *)); 2042extern int mime8to7 __P((MCI *, HDR *, ENVELOPE *, char **, int, int)); 2043 2044/* 2045** Flags passed to returntosender. 2046*/ 2047 2048#define RTSF_NO_BODY 0 /* send headers only */ 2049#define RTSF_SEND_BODY 0x0001 /* include body of message in return */ 2050#define RTSF_PM_BOUNCE 0x0002 /* this is a postmaster bounce */ 2051 2052/* functions */ 2053extern int returntosender __P((char *, ADDRESS *, int, ENVELOPE *)); 2054 2055/* 2056** Mail Filters (milter) 2057*/ 2058 2059/* 2060** 32-bit type used by milter 2061** (needed by libmilter even if MILTER isn't defined) 2062*/ 2063 2064typedef SM_INT32 mi_int32; 2065 2066#if MILTER 2067# define SMFTO_WRITE 0 /* Timeout for sending information */ 2068# define SMFTO_READ 1 /* Timeout waiting for a response */ 2069# define SMFTO_EOM 2 /* Timeout for ACK/NAK to EOM */ 2070# define SMFTO_CONNECT 3 /* Timeout for connect() */ 2071 2072# define SMFTO_NUM_TO 4 /* Total number of timeouts */ 2073 2074struct milter 2075{ 2076 char *mf_name; /* filter name */ 2077 BITMAP256 mf_flags; /* MTA flags */ 2078 mi_int32 mf_fvers; /* filter version */ 2079 mi_int32 mf_fflags; /* filter flags */ 2080 mi_int32 mf_pflags; /* protocol flags */ 2081 char *mf_conn; /* connection info */ 2082 int mf_sock; /* connected socket */ 2083 char mf_state; /* state of filter */ 2084 char mf_lflags; /* "local" flags */ 2085 int mf_idx; /* milter number (index) */ 2086 time_t mf_timeout[SMFTO_NUM_TO]; /* timeouts */ 2087# if _FFR_MILTER_CHECK 2088 /* for testing only */ 2089 mi_int32 mf_mta_prot_version; 2090 mi_int32 mf_mta_prot_flags; 2091 mi_int32 mf_mta_actions; 2092# endif /* _FFR_MILTER_CHECK */ 2093}; 2094 2095# define MI_LFL_NONE 0x00000000 2096# define MI_LFLAGS_SYM(st) (1 << (st)) /* has its own symlist for stage st */ 2097 2098struct milters 2099{ 2100 mi_int32 mis_flags; /* filter flags */ 2101}; 2102typedef struct milters milters_T; 2103 2104# define MIS_FL_NONE 0x00000000 /* no requirements... */ 2105# define MIS_FL_DEL_RCPT 0x00000001 /* can delete rcpt */ 2106# define MIS_FL_REJ_RCPT 0x00000002 /* can reject rcpt */ 2107 2108 2109/* MTA flags */ 2110# define SMF_REJECT 'R' /* Reject connection on filter fail */ 2111# define SMF_TEMPFAIL 'T' /* tempfail connection on failure */ 2112# define SMF_TEMPDROP '4' /* 421 connection on failure */ 2113 2114EXTERN struct milter *InputFilters[MAXFILTERS]; 2115EXTERN char *InputFilterList; 2116EXTERN int MilterLogLevel; 2117 2118/* functions */ 2119extern void setup_daemon_milters __P((void)); 2120#endif /* MILTER */ 2121 2122/* 2123** Vendor codes 2124** 2125** Vendors can customize sendmail to add special behaviour, 2126** generally for back compatibility. Ideally, this should 2127** be set up in the .cf file using the "V" command. However, 2128** it's quite reasonable for some vendors to want the default 2129** be their old version; this can be set using 2130** -DVENDOR_DEFAULT=VENDOR_xxx 2131** in the Makefile. 2132** 2133** Vendors should apply to sendmail-YYYY@support.sendmail.org 2134** (replace YYYY with the current year) 2135** for unique vendor codes. 2136*/ 2137 2138#define VENDOR_BERKELEY 1 /* Berkeley-native configuration file */ 2139#define VENDOR_SUN 2 /* Sun-native configuration file */ 2140#define VENDOR_HP 3 /* Hewlett-Packard specific config syntax */ 2141#define VENDOR_IBM 4 /* IBM specific config syntax */ 2142#define VENDOR_SENDMAIL 5 /* Proofpoint, Inc. specific config syntax */ 2143#define VENDOR_DEC 6 /* Compaq, DEC, Digital */ 2144 2145/* prototypes for vendor-specific hook routines */ 2146extern void vendor_daemon_setup __P((ENVELOPE *)); 2147extern void vendor_set_uid __P((UID_T)); 2148 2149 2150/* 2151** Terminal escape codes. 2152** 2153** To make debugging output clearer. 2154*/ 2155 2156struct termescape 2157{ 2158 char *te_rv_on; /* turn reverse-video on */ 2159 char *te_under_on; /* turn underlining on */ 2160 char *te_normal; /* revert to normal output */ 2161}; 2162 2163/* 2164** Additional definitions 2165*/ 2166 2167/* 2168** d_flags, see daemon.c 2169** general rule: lower case: required, upper case: No 2170*/ 2171 2172#define D_AUTHREQ 'a' /* authentication required */ 2173#define D_BINDIF 'b' /* use if_addr for outgoing connection */ 2174#define D_CANONREQ 'c' /* canonification required (cf) */ 2175#define D_IFNHELO 'h' /* use if name for HELO */ 2176#define D_FQMAIL 'f' /* fq sender address required (cf) */ 2177#define D_FQRCPT 'r' /* fq recipient address required (cf) */ 2178#define D_SMTPS 's' /* SMTP over SSL (smtps) */ 2179#define D_UNQUALOK 'u' /* unqualified address is ok (cf) */ 2180#define D_NOAUTH 'A' /* no AUTH */ 2181#define D_NOCANON 'C' /* no canonification (cf) */ 2182#define D_NODANE 'D' /* no DANE (client) */ 2183#define D_NOETRN 'E' /* no ETRN (MSA) */ 2184#define D_NOSTS 'M' /* no MTA-STS (client) */ 2185#define D_NOTLS 'S' /* don't use STARTTLS */ 2186#define D_ETRNONLY ((char)0x01) /* allow only ETRN (disk low) */ 2187#define D_OPTIONAL 'O' /* optional socket */ 2188#define D_DISABLE ((char)0x02) /* optional socket disabled */ 2189#define D_ISSET ((char)0x03) /* this client struct is set */ 2190#if _FFR_XCNCT 2191#define D_XCNCT ((char)0x04) /* X-Connect was used */ 2192#define D_XCNCT_M ((char)0x05) /* X-Connect was used + "forged" */ 2193#endif 2194 2195 2196/* 2197** Queue related items 2198*/ 2199 2200/* queue file names */ 2201#define ANYQFL_LETTER '?' 2202#define QUARQF_LETTER 'h' 2203#define DATAFL_LETTER 'd' 2204#define XSCRPT_LETTER 'x' 2205#define NORMQF_LETTER 'q' 2206#define NEWQFL_LETTER 't' 2207 2208# define TEMPQF_LETTER 'T' 2209# define LOSEQF_LETTER 'Q' 2210 2211/* queue sort order */ 2212#define QSO_BYPRIORITY 0 /* sort by message priority */ 2213#define QSO_BYHOST 1 /* sort by first host name */ 2214#define QSO_BYTIME 2 /* sort by submission time */ 2215#define QSO_BYFILENAME 3 /* sort by file name only */ 2216#define QSO_RANDOM 4 /* sort in random order */ 2217#define QSO_BYMODTIME 5 /* sort by modification time */ 2218#define QSO_NONE 6 /* do not sort */ 2219#if _FFR_RHS 2220# define QSO_BYSHUFFLE 7 /* sort by shuffled host name */ 2221#endif 2222 2223#define NOQGRP (-1) /* no queue group (yet) */ 2224#define ENVQGRP (-2) /* use queue group of envelope */ 2225#define NOAQGRP (-3) /* no queue group in addr (yet) */ 2226#define ISVALIDQGRP(x) ((x) >= 0) /* valid queue group? */ 2227#define NOQDIR (-1) /* no queue directory (yet) */ 2228#define ENVQDIR (-2) /* use queue directory of envelope */ 2229#define NOAQDIR (-3) /* no queue directory in addr (yet) */ 2230#define ISVALIDQDIR(x) ((x) >= 0) /* valid queue directory? */ 2231#define RS_QUEUEGROUP "queuegroup" /* ruleset for queue group selection */ 2232 2233#define NOW ((time_t) (-1)) /* queue return: now */ 2234 2235/* SuperSafe values */ 2236#define SAFE_NO 0 /* no fsync(): don't use... */ 2237#define SAFE_INTERACTIVE 1 /* limit fsync() in -odi */ 2238#define SAFE_REALLY 2 /* always fsync() */ 2239#define SAFE_REALLY_POSTMILTER 3 /* fsync() if milter says OK */ 2240 2241/* QueueMode bits */ 2242#define QM_NORMAL ' ' 2243#define QM_QUARANTINE 'Q' 2244#define QM_LOST 'L' 2245 2246/* Queue Run Limitations */ 2247struct queue_char 2248{ 2249 char *queue_match; /* string to match */ 2250 bool queue_negate; /* or not match, if set */ 2251 struct queue_char *queue_next; 2252}; 2253 2254/* run_work_group() flags */ 2255#define RWG_NONE 0x0000 2256#define RWG_FORK 0x0001 2257#define RWG_VERBOSE 0x0002 2258#define RWG_PERSISTENT 0x0004 2259#define RWG_FORCE 0x0008 2260#define RWG_RUNALL 0x0010 2261 2262typedef struct queue_char QUEUE_CHAR; 2263 2264EXTERN int volatile CurRunners; /* current number of runner children */ 2265EXTERN int MaxQueueRun; /* maximum number of jobs in one queue run */ 2266EXTERN int MaxQueueChildren; /* max # of forked queue children */ 2267EXTERN int MaxRunnersPerQueue; /* max # proc's active in queue group */ 2268EXTERN int NiceQueueRun; /* nice queue runs to this value */ 2269EXTERN int NumQueue; /* number of queue groups */ 2270EXTERN int QueueFileMode; /* mode on files in mail queue */ 2271EXTERN int QueueMode; /* which queue items to act upon */ 2272EXTERN int QueueSortOrder; /* queue sorting order algorithm */ 2273EXTERN time_t MinQueueAge; /* min delivery interval */ 2274EXTERN time_t MaxQueueAge; /* max delivery interval */ 2275EXTERN time_t QueueIntvl; /* intervals between running the queue */ 2276EXTERN char *QueueDir; /* location of queue directory */ 2277EXTERN QUEUE_CHAR *QueueLimitId; /* limit queue run to id */ 2278EXTERN QUEUE_CHAR *QueueLimitQuarantine; /* limit queue run to quarantine reason */ 2279EXTERN QUEUE_CHAR *QueueLimitRecipient; /* limit queue run to rcpt */ 2280EXTERN QUEUE_CHAR *QueueLimitSender; /* limit queue run to sender */ 2281EXTERN QUEUEGRP *Queue[MAXQUEUEGROUPS + 1]; /* queue groups */ 2282#if _FFR_BOUNCE_QUEUE 2283EXTERN int BounceQueue; 2284#endif 2285 2286/* functions */ 2287extern void assign_queueid __P((ENVELOPE *)); 2288extern ADDRESS *copyqueue __P((ADDRESS *, SM_RPOOL_T *)); 2289extern void cleanup_queues __P((void)); 2290extern bool doqueuerun __P((void)); 2291extern void initsys __P((ENVELOPE *)); 2292extern void loseqfile __P((ENVELOPE *, char *)); 2293extern int name2qid __P((char *)); 2294extern char *qid_printname __P((ENVELOPE *)); 2295extern char *qid_printqueue __P((int, int)); 2296extern void quarantine_queue __P((char *, int)); 2297extern char *queuename __P((ENVELOPE *, int)); 2298extern void queueup __P((ENVELOPE *, unsigned int)); 2299extern bool runqueue __P((bool, bool, bool, bool)); 2300extern bool run_work_group __P((int, int)); 2301extern void set_def_queueval __P((QUEUEGRP *, bool)); 2302extern void setup_queues __P((bool)); 2303extern bool setnewqueue __P((ENVELOPE *)); 2304extern bool shouldqueue __P((long, time_t)); 2305extern void sync_queue_time __P((void)); 2306extern void init_qid_alg __P((void)); 2307extern int print_single_queue __P((int, int)); 2308#if REQUIRES_DIR_FSYNC 2309# define SYNC_DIR(path, panic) sync_dir(path, panic) 2310extern void sync_dir __P((char *, bool)); 2311#else 2312# define SYNC_DIR(path, panic) ((void) 0) 2313#endif 2314#if _FFR_DMTRIGGER 2315extern bool qm __P((void)); 2316extern int deliver __P((ENVELOPE *, ADDRESS *)); 2317#endif 2318 2319/* 2320** Timeouts 2321** 2322** Indicated values are the MINIMUM per RFC 1123 section 5.3.2. 2323*/ 2324 2325EXTERN struct 2326{ 2327 /* RFC 1123-specified timeouts [minimum value] */ 2328 time_t to_initial; /* initial greeting timeout [5m] */ 2329 time_t to_mail; /* MAIL command [5m] */ 2330 time_t to_rcpt; /* RCPT command [5m] */ 2331 time_t to_datainit; /* DATA initiation [2m] */ 2332 time_t to_datablock; /* DATA block [3m] */ 2333 time_t to_datafinal; /* DATA completion [10m] */ 2334 time_t to_nextcommand; /* next command [5m] */ 2335 /* following timeouts are not mentioned in RFC 1123 */ 2336 time_t to_iconnect; /* initial connection timeout (first try) */ 2337 time_t to_connect; /* initial connection timeout (later tries) */ 2338 time_t to_aconnect; /* all connections timeout (MX and A records) */ 2339 time_t to_rset; /* RSET command */ 2340 time_t to_helo; /* HELO command */ 2341 time_t to_quit; /* QUIT command */ 2342 time_t to_miscshort; /* misc short commands (NOOP, VERB, etc) */ 2343 time_t to_ident; /* IDENT protocol requests */ 2344 time_t to_fileopen; /* opening :include: and .forward files */ 2345 time_t to_control; /* process a control socket command */ 2346 time_t to_lhlo; /* LMTP: LHLO command */ 2347#if SASL 2348 time_t to_auth; /* AUTH dialogue [10m] */ 2349#endif 2350#if STARTTLS 2351 time_t to_starttls; /* STARTTLS dialogue [10m] */ 2352#endif 2353 /* following are per message */ 2354 time_t to_q_return[MAXTOCLASS]; /* queue return timeouts */ 2355 time_t to_q_warning[MAXTOCLASS]; /* queue warning timeouts */ 2356 time_t res_retrans[MAXRESTOTYPES]; /* resolver retransmit */ 2357 int res_retry[MAXRESTOTYPES]; /* resolver retry */ 2358} TimeOuts; 2359 2360/* timeout classes for return and warning timeouts */ 2361#define TOC_NORMAL 0 /* normal delivery */ 2362#define TOC_URGENT 1 /* urgent delivery */ 2363#define TOC_NONURGENT 2 /* non-urgent delivery */ 2364#define TOC_DSN 3 /* DSN delivery */ 2365 2366/* resolver timeout specifiers */ 2367#define RES_TO_FIRST 0 /* first attempt */ 2368#define RES_TO_NORMAL 1 /* subsequent attempts */ 2369#define RES_TO_DEFAULT 2 /* default value */ 2370 2371/* functions */ 2372extern void inittimeouts __P((char *, bool)); 2373 2374/* 2375** Interface probing 2376*/ 2377 2378#define DPI_PROBENONE 0 /* Don't probe any interfaces */ 2379#define DPI_PROBEALL 1 /* Probe all interfaces */ 2380#define DPI_SKIPLOOPBACK 2 /* Don't probe loopback interfaces */ 2381 2382/* 2383** Trace information 2384*/ 2385 2386/* macros for debugging flags */ 2387#if NOT_SENDMAIL 2388# define tTd(flag, level) (tTdvect[flag] >= (unsigned char)level) 2389#else 2390# define tTd(flag, level) (tTdvect[flag] >= (unsigned char)level && !IntSig) 2391# if _FFR_TESTS 2392# define TTD(flag, level) (tTdvect[flag] >= (unsigned char)level && !IntSig) 2393# else 2394# define TTD(flag, level) false 2395# endif 2396#endif 2397#define tTdlevel(flag) (tTdvect[flag]) 2398 2399/* variables */ 2400extern unsigned char tTdvect[100]; /* trace vector */ 2401 2402/* 2403** Miscellaneous information. 2404*/ 2405 2406/* 2407** The "no queue id" queue id for sm_syslog 2408*/ 2409 2410#define NOQID "" 2411 2412#define CURHOSTNAME (CurHostName == NULL ? "local" : CurHostName) 2413 2414/* 2415** Some in-line functions 2416*/ 2417 2418/* set exit status */ 2419#define setstat(s) \ 2420 do \ 2421 { \ 2422 if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ 2423 ExitStat = s; \ 2424 } while (0) 2425 2426 2427#define STRUCTCOPY(s, d) d = s 2428 2429/* 2430** Update a permanent string variable with a new value. 2431** The old value is freed, the new value is strdup'ed. 2432** 2433** We use sm_pstrdup_x to duplicate the string because it raises 2434** an exception on error, and because it allocates "permanent storage" 2435** which is not expected to be freed before process exit. 2436** The latter is important for memory leak analysis. 2437** 2438** If an exception occurs while strdup'ing the new value, 2439** then the variable remains set to the old value. 2440** That's why the strdup must occur before we free the old value. 2441*/ 2442#define PSTRSET(var, val) \ 2443 do \ 2444 { \ 2445 char *_newval = sm_pstrdup_x(val); \ 2446 if (var != NULL) \ 2447 sm_free(var); \ 2448 var = _newval; \ 2449 } while (0) 2450 2451#define _CHECK_RESTART \ 2452 do \ 2453 { \ 2454 if (ShutdownRequest != NULL) \ 2455 shutdown_daemon(); \ 2456 else if (RestartRequest != NULL) \ 2457 restart_daemon(); \ 2458 else if (RestartWorkGroup) \ 2459 restart_marked_work_groups(); \ 2460 } while (0) 2461 2462# define CHECK_RESTART _CHECK_RESTART 2463 2464#define CHK_CUR_RUNNERS(fct, idx, count) \ 2465 do \ 2466 { \ 2467 if (CurRunners < 0) \ 2468 { \ 2469 if (LogLevel > 3) \ 2470 sm_syslog(LOG_ERR, NOQID, \ 2471 "%s: CurRunners=%d, i=%d, count=%d, status=should not happen", \ 2472 fct, CurRunners, idx, count); \ 2473 CurRunners = 0; \ 2474 } \ 2475 } while (0) 2476 2477/* reply types (text in SmtpMsgBuffer) */ 2478/* XREF: deliver.c: xs_states[] -- any changes here must be reflected there! */ 2479#define XS_DEFAULT 0 /* other commands, e.g., RSET */ 2480#define XS_STARTTLS 1 2481#define XS_AUTH 2 2482#define XS_GREET 3 2483#define XS_EHLO 4 2484#define XS_MAIL 5 2485#define XS_RCPT 6 2486#define XS_DATA 7 2487#define XS_EOM 8 2488#define XS_DATA2 9 /* LMTP */ 2489#define XS_QUIT 10 2490 2491/* 2492** Global variables. 2493*/ 2494 2495#if _FFR_ADD_BCC 2496EXTERN bool AddBcc; 2497#endif 2498#if _FFR_ADDR_TYPE_MODES 2499EXTERN bool AddrTypeModes; /* addr_type: extra "mode" information */ 2500#endif 2501EXTERN bool AllowBogusHELO; /* allow syntax errors on HELO command */ 2502EXTERN bool CheckAliases; /* parse addresses during newaliases */ 2503#if _FFR_QUEUE_RUN_PARANOIA 2504EXTERN int CheckQueueRunners; /* check whether queue runners are OK */ 2505#endif 2506EXTERN bool ColonOkInAddr; /* single colon legal in address */ 2507#if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) 2508EXTERN bool ConfigFileRead; /* configuration file has been read */ 2509#endif 2510EXTERN bool DisConnected; /* running with OutChannel redirect to transcript file */ 2511EXTERN bool DontExpandCnames; /* do not $[...$] expand CNAMEs */ 2512EXTERN bool DontInitGroups; /* avoid initgroups() because of NIS cost */ 2513EXTERN bool DontLockReadFiles; /* don't read lock support files */ 2514EXTERN bool DontPruneRoutes; /* don't prune source routes */ 2515EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ 2516EXTERN bool FromFlag; /* if set, "From" person is explicit */ 2517EXTERN bool FipsMode; 2518EXTERN bool GrabTo; /* if set, get recipients from msg */ 2519#if _FFR_EIGHT_BIT_ADDR_OK 2520EXTERN bool EightBitAddrOK; /* we'll let 8-bit addresses through */ 2521#else 2522# define EightBitAddrOK false 2523#endif 2524EXTERN bool HasEightBits; /* has at least one eight bit input byte */ 2525EXTERN bool HasWildcardMX; /* don't use MX records when canonifying */ 2526EXTERN bool HoldErrs; /* only output errors to transcript */ 2527EXTERN bool IgnoreHostStatus; /* ignore long term host status files */ 2528EXTERN bool IgnrDot; /* don't let dot end messages */ 2529#if _FFR_KEEPBCC 2530EXTERN bool KeepBcc; 2531#else 2532# define KeepBcc false 2533#endif 2534EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ 2535EXTERN bool MatchGecos; /* look for user names in gecos field */ 2536EXTERN bool MeToo; /* send to the sender also */ 2537EXTERN bool NoAlias; /* suppress aliasing */ 2538EXTERN bool NoConnect; /* don't connect to non-local mailers */ 2539EXTERN bool OnlyOneError; /* .... or only want to give one SMTP reply */ 2540EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ 2541#if _FFR_REJECT_NUL_BYTE 2542EXTERN bool RejectNUL; /* reject NUL input byte? */ 2543#endif 2544#if REQUIRES_DIR_FSYNC 2545EXTERN bool RequiresDirfsync; /* requires fsync() for directory */ 2546#endif 2547EXTERN bool volatile RestartWorkGroup; /* daemon needs to restart some work groups */ 2548EXTERN bool RrtImpliesDsn; /* turn Return-Receipt-To: into DSN */ 2549EXTERN bool SaveFrom; /* save leading "From" lines */ 2550EXTERN bool SendMIMEErrors; /* send error messages in MIME format */ 2551EXTERN bool SevenBitInput; /* force 7-bit data on input */ 2552EXTERN bool SingleLineFromHeader; /* force From: header to be one line */ 2553EXTERN bool SingleThreadDelivery; /* single thread hosts on delivery */ 2554EXTERN bool SoftBounce; /* replace 5xy by 4xy (for testing) */ 2555EXTERN bool volatile StopRequest; /* stop sending output */ 2556EXTERN bool SuprErrs; /* set if we are suppressing errors */ 2557EXTERN bool TryNullMXList; /* if we are the best MX, try host directly */ 2558EXTERN bool UseMSP; /* mail submission: group writable queue ok? */ 2559EXTERN bool WorkAroundBrokenAAAA; /* some nameservers return SERVFAIL on AAAA queries */ 2560EXTERN bool UseErrorsTo; /* use Errors-To: header (back compat) */ 2561EXTERN bool UseNameServer; /* using DNS -- interpret h_errno & MX RRs */ 2562EXTERN bool UseCompressedIPv6Addresses; /* for more specific zero-subnet matches */ 2563EXTERN char InetMode; /* default network for daemon mode */ 2564EXTERN char OpMode; /* operation mode, see below */ 2565EXTERN char SpaceSub; /* substitution for <lwsp> */ 2566#if _FFR_BADRCPT_SHUTDOWN 2567EXTERN int BadRcptShutdown; /* Shutdown connection for rejected RCPTs */ 2568EXTERN int BadRcptShutdownGood; /* above even when there are good RCPTs */ 2569#endif 2570EXTERN int BadRcptThrottle; /* Throttle rejected RCPTs per SMTP message */ 2571#if _FFR_RCPTTHROTDELAY 2572EXTERN unsigned int BadRcptThrottleDelay; /* delay for BadRcptThrottle */ 2573#else 2574# define BadRcptThrottleDelay 1 2575#endif 2576#if _FFR_TLS_ALTNAMES 2577EXTERN bool SetCertAltnames; 2578#endif 2579EXTERN int CheckpointInterval; /* queue file checkpoint interval */ 2580EXTERN int ConfigLevel; /* config file level */ 2581EXTERN int ConnRateThrottle; /* throttle for SMTP connection rate */ 2582EXTERN int volatile CurChildren; /* current number of daemonic children */ 2583EXTERN int CurrentLA; /* current load average */ 2584#if DANE 2585EXTERN int Dane; /* DANE */ 2586#else 2587# define Dane 0 /* XREF: see tls.h: #define DANE_NEVER */ 2588#endif 2589EXTERN int DefaultNotify; /* default DSN notification flags */ 2590EXTERN int DelayLA; /* load average to delay connections */ 2591EXTERN int DontProbeInterfaces; /* don't probe interfaces for names */ 2592EXTERN int Errors; /* set if errors (local to single pass) */ 2593EXTERN int ExitStat; /* exit status code */ 2594EXTERN int FastSplit; /* fast initial splitting of envelopes */ 2595EXTERN int FileMode; /* mode on files */ 2596EXTERN int LineNumber; /* line number in current input */ 2597EXTERN int LogLevel; /* level of logging to perform */ 2598EXTERN int MaxAliasRecursion; /* maximum depth of alias recursion */ 2599EXTERN int MaxChildren; /* maximum number of daemonic children */ 2600EXTERN int MaxForwardEntries; /* maximum number of forward entries */ 2601EXTERN int MaxHeadersLength; /* max length of headers */ 2602EXTERN int MaxHopCount; /* max # of hops until bounce */ 2603EXTERN int MaxMacroRecursion; /* maximum depth of macro recursion */ 2604EXTERN int MaxMimeFieldLength; /* maximum MIME field length */ 2605EXTERN int MaxMimeHeaderLength; /* maximum MIME header length */ 2606EXTERN int MaxNOOPCommands; /* max "noise" commands before slowdown */ 2607 2608EXTERN int MaxRcptPerMsg; /* max recipients per SMTP message */ 2609EXTERN int MaxRuleRecursion; /* maximum depth of ruleset recursion */ 2610#if _FFR_MSG_ACCEPT 2611EXTERN char *MessageAccept; /* "Message accepted for delivery" reply text */ 2612#endif 2613 2614EXTERN int MimeMode; /* MIME processing mode */ 2615#if _FFR_MTA_STS 2616EXTERN bool MTASTS; 2617EXTERN char *STS_SNI; 2618#endif 2619EXTERN int NoRecipientAction; 2620 2621#if SM_CONF_SHM 2622EXTERN int Numfilesys; /* number of queue file systems */ 2623EXTERN int *PNumFileSys; 2624# define NumFileSys (*PNumFileSys) 2625#else /* SM_CONF_SHM */ 2626EXTERN int NumFileSys; /* number of queue file systems */ 2627#endif /* SM_CONF_SHM */ 2628 2629EXTERN int QueueLA; /* load average starting forced queueing */ 2630EXTERN int RefuseLA; /* load average refusing connections */ 2631EXTERN time_t RejectLogInterval; /* time btwn log msgs while refusing */ 2632#if _FFR_MEMSTAT 2633EXTERN long QueueLowMem; /* low memory starting forced queueing */ 2634EXTERN long RefuseLowMem; /* low memory refusing connections */ 2635EXTERN char *MemoryResource;/* memory resource to look up */ 2636#endif /* _FFR_MEMSTAT */ 2637EXTERN int SuperSafe; /* be extra careful, even if expensive */ 2638#if USE_EAI 2639EXTERN int SMTP_UTF8; /* enable SMTPUTF8 support */ 2640#else 2641# define SMTP_UTF8 false 2642#endif 2643EXTERN int VendorCode; /* vendor-specific operation enhancements */ 2644EXTERN int Verbose; /* set if blow-by-blow desired */ 2645EXTERN gid_t DefGid; /* default gid to run as */ 2646EXTERN gid_t RealGid; /* real gid of caller */ 2647EXTERN gid_t RunAsGid; /* GID to become for bulk of run */ 2648EXTERN gid_t EffGid; /* effective gid */ 2649#if SM_CONF_SHM 2650EXTERN key_t ShmKey; /* shared memory key */ 2651EXTERN char *ShmKeyFile; /* shared memory key file */ 2652#endif 2653EXTERN pid_t CurrentPid; /* current process id */ 2654EXTERN pid_t DaemonPid; /* process id of daemon */ 2655EXTERN pid_t PidFilePid; /* daemon/queue runner who wrote pid file */ 2656EXTERN uid_t DefUid; /* default uid to run as */ 2657EXTERN uid_t RealUid; /* real uid of caller */ 2658EXTERN uid_t RunAsUid; /* UID to become for bulk of run */ 2659EXTERN uid_t TrustedUid; /* uid of trusted user for files and startup */ 2660EXTERN size_t DataFileBufferSize; /* size of buf for in-core data file */ 2661EXTERN time_t DeliverByMin; /* deliver by minimum time */ 2662EXTERN time_t DialDelay; /* delay between dial-on-demand tries */ 2663EXTERN time_t SafeAlias; /* interval to wait until @:@ in alias file */ 2664EXTERN time_t ServiceCacheMaxAge; /* refresh interval for cache */ 2665EXTERN size_t XscriptFileBufferSize; /* size of buf for in-core transcript file */ 2666EXTERN MODE_T OldUmask; /* umask when sendmail starts up */ 2667EXTERN long MaxMessageSize; /* advertised max size we will accept */ 2668EXTERN long MinBlocksFree; /* min # of blocks free on queue fs */ 2669EXTERN long QueueFactor; /* slope of queue function */ 2670EXTERN long WkClassFact; /* multiplier for message class -> priority */ 2671EXTERN long WkRecipFact; /* multiplier for # of recipients -> priority */ 2672EXTERN long WkTimeFact; /* priority offset each time this job is run */ 2673EXTERN char *ControlSocketName; /* control socket filename [control.c] */ 2674EXTERN char *CurHostName; /* current host we are dealing with */ 2675EXTERN char *DeadLetterDrop; /* path to dead letter office */ 2676EXTERN char *DefUser; /* default user to run as (from DefUid) */ 2677EXTERN char *DefaultCharSet; /* default character set for MIME */ 2678EXTERN char *DoubleBounceAddr; /* where to send double bounces */ 2679EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ 2680EXTERN char *FallbackMX; /* fall back MX host */ 2681EXTERN char *FallbackSmartHost; /* fall back smart host */ 2682EXTERN char *FileName; /* name to print on error messages */ 2683EXTERN char *ForwardPath; /* path to search for .forward files */ 2684EXTERN char *HeloName; /* hostname to announce in HELO */ 2685EXTERN char *HelpFile; /* location of SMTP help file */ 2686EXTERN char *HostStatDir; /* location of host status information */ 2687EXTERN char *HostsFile; /* path to /etc/hosts file */ 2688extern char *Mbdb; /* mailbox database type */ 2689EXTERN char *MustQuoteChars; /* quote these characters in phrases */ 2690EXTERN char *MyHostName; /* name of this host for SMTP messages */ 2691EXTERN char *OperatorChars; /* operators (old $o macro) */ 2692EXTERN char *PidFile; /* location of proc id file [conf.c] */ 2693EXTERN char *PostMasterCopy; /* address to get errs cc's */ 2694EXTERN char *ProcTitlePrefix; /* process title prefix */ 2695EXTERN char *RealHostName; /* name of host we are talking to */ 2696EXTERN char *RealUserName; /* real user name of caller */ 2697EXTERN char *volatile RestartRequest;/* a sendmail restart has been requested */ 2698EXTERN char *RunAsUserName; /* user to become for bulk of run */ 2699EXTERN char *SafeFileEnv; /* chroot location for file delivery */ 2700EXTERN char *ServiceSwitchFile; /* backup service switch */ 2701EXTERN char *volatile ShutdownRequest;/* a sendmail shutdown has been requested */ 2702EXTERN bool volatile IntSig; 2703EXTERN char *SmtpGreeting; /* SMTP greeting message (old $e macro) */ 2704EXTERN char *SmtpPhase; /* current phase in SMTP processing */ 2705EXTERN char SmtpError[MAXLINE]; /* save failure error messages */ 2706EXTERN char *StatFile; /* location of statistics summary */ 2707EXTERN char *TimeZoneSpec; /* override time zone specification */ 2708EXTERN char *UdbSpec; /* user database source spec */ 2709EXTERN char *UnixFromLine; /* UNIX From_ line (old $l macro) */ 2710EXTERN char **ExternalEnviron; /* saved user (input) environment */ 2711EXTERN char **SaveArgv; /* argument vector for re-execing */ 2712EXTERN BITMAP256 DontBlameSendmail; /* DontBlameSendmail bits */ 2713EXTERN SM_FILE_T *InChannel; /* input connection */ 2714EXTERN SM_FILE_T *OutChannel; /* output connection */ 2715EXTERN SM_FILE_T *TrafficLogFile; /* file in which to log all traffic */ 2716#if HESIOD 2717EXTERN void *HesiodContext; 2718#endif 2719EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ 2720EXTERN char *RuleSetNames[MAXRWSETS]; /* ruleset number to name */ 2721EXTERN char *UserEnviron[MAXUSERENVIRON + 1]; 2722EXTERN struct rewrite *RewriteRules[MAXRWSETS]; 2723EXTERN struct termescape TermEscape; /* terminal escape codes */ 2724EXTERN SOCKADDR ConnectOnlyTo; /* override connection address (for testing) */ 2725EXTERN SOCKADDR RealHostAddr; /* address of host we are talking to */ 2726extern const SM_EXC_TYPE_T EtypeQuickAbort; /* type of a QuickAbort exception */ 2727 2728#if _FFR_BLANKENV_MACV 2729EXTERN int Hacks; /* bit field of run-time enabled "hacks" */ 2730# define H_LOOKUP_MACRO_IN_BLANKENV 0x0001 2731# define LOOKUP_MACRO_IN_BLANKENV (Hacks & H_LOOKUP_MACRO_IN_BLANKENV) 2732#else 2733# define LOOKUP_MACRO_IN_BLANKENV false 2734#endif 2735 2736EXTERN int ConnectionRateWindowSize; 2737 2738/* 2739** Declarations of useful functions 2740*/ 2741 2742/* Transcript file */ 2743extern void closexscript __P((ENVELOPE *)); 2744extern void openxscript __P((ENVELOPE *)); 2745 2746#if SM_DEVELOPER 2747#define NR_PRINTFLIKE(a, b) PRINTFLIKE(a, b) 2748#else 2749#define NR_PRINTFLIKE(a, b) 2750#endif 2751 2752/* error related */ 2753extern void buffer_errors __P((void)); 2754extern void flush_errors __P((bool)); 2755extern void NR_PRINTFLIKE(1, 2) message __P((const char *, ...)); 2756extern void NR_PRINTFLIKE(1, 2) nmessage __P((const char *, ...)); 2757#if _FFR_PROXY 2758extern void NR_PRINTFLIKE(3, 4) emessage __P((const char *, const char *, const char *, ...)); 2759extern int extsc __P((const char *, int, char *, char *)); 2760#endif 2761extern void NR_PRINTFLIKE(1, 2) syserr __P((const char *, ...)); 2762extern void NR_PRINTFLIKE(2, 3) usrerrenh __P((char *, const char *, ...)); 2763extern void NR_PRINTFLIKE(1, 2) usrerr __P((const char *, ...)); 2764extern int isenhsc __P((const char *, int)); 2765extern int extenhsc __P((const char *, int, char *)); 2766extern int skipaddrhost __P((const char *, bool)); 2767 2768/* alias file */ 2769extern void alias __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 2770extern bool aliaswait __P((MAP *, const char *, bool)); 2771extern void forward __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 2772extern void readaliases __P((MAP *, SM_FILE_T *, bool, bool)); 2773extern bool rebuildaliases __P((MAP *)); 2774extern void setalias __P((char *)); 2775 2776/* logging */ 2777extern void logdelivery __P((MAILER *, MCI *, char *, const char *, ADDRESS *, time_t, ENVELOPE *, ADDRESS *, int)); 2778extern void logsender __P((ENVELOPE *, char *)); 2779extern void PRINTFLIKE(3, 4) sm_syslog __P((int, const char *, const char *, ...)); 2780 2781/* SMTP */ 2782extern void giveresponse __P((int, char *, MAILER *, MCI *, ADDRESS *, time_t, ENVELOPE *, ADDRESS *)); 2783extern int reply __P((MAILER *, MCI *, ENVELOPE *, time_t, void (*)__P((char *, bool, MAILER *, MCI *, ENVELOPE *)), char **, int, char **)); 2784extern void smtp __P((char *volatile, BITMAP256, ENVELOPE *volatile)); 2785#if SASL 2786extern int smtpauth __P((MAILER *, MCI *, ENVELOPE *)); 2787#endif 2788extern void smtpclrse __P((ENVELOPE *)); 2789extern int smtpdata __P((MAILER *, MCI *, ENVELOPE *, ADDRESS *, time_t)); 2790extern int smtpgetstat __P((MAILER *, MCI *, ENVELOPE *)); 2791extern int smtpmailfrom __P((MAILER *, MCI *, ENVELOPE *)); 2792extern void smtpmessage __P((char *, MAILER *, MCI *, ...)); 2793extern void smtpinit __P((MAILER *, MCI *, ENVELOPE *, bool)); 2794extern char *smtptodsn __P((int)); 2795extern int smtpprobe __P((MCI *)); 2796extern void smtpquit __P((MAILER *, MCI *, ENVELOPE *)); 2797extern int smtprcpt __P((ADDRESS *, MAILER *, MCI *, ENVELOPE *, ADDRESS *, time_t)); 2798extern void smtprset __P((MAILER *, MCI *, ENVELOPE *)); 2799 2800#define REPLYTYPE(r) ((r) / 100) /* first digit of reply code */ 2801#define REPLYCLASS(r) (((r) / 10) % 10) /* second digit of reply code */ 2802#define REPLYMINOR(r) ((r) % 10) /* last digit of reply code */ 2803#define ISSMTPCODE(c) (isascii(c[0]) && isdigit(c[0]) && \ 2804 isascii(c[1]) && isdigit(c[1]) && \ 2805 isascii(c[2]) && isdigit(c[2])) 2806#define ISSMTPREPLY(c) (ISSMTPCODE(c) && \ 2807 (c[3] == ' ' || c[3] == '-' || c[3] == '\0')) 2808#define SM_ISSPACE(c) (isascii(c) && isspace(c)) 2809 2810/* delivery */ 2811extern pid_t dowork __P((int, int, char *, bool, bool, ENVELOPE *)); 2812extern pid_t doworklist __P((ENVELOPE *, bool, bool)); 2813extern int endmailer __P((MCI *, ENVELOPE *, char **)); 2814extern int mailfile __P((char *volatile, MAILER *volatile, ADDRESS *, volatile long, ENVELOPE *)); 2815extern void sendall __P((ENVELOPE *, int)); 2816 2817/* stats */ 2818#define STATS_NORMAL 'n' 2819#define STATS_QUARANTINE 'q' 2820#define STATS_REJECT 'r' 2821#define STATS_CONNECT 'c' 2822 2823extern void markstats __P((ENVELOPE *, ADDRESS *, int)); 2824extern void clearstats __P((void)); 2825extern void poststats __P((char *)); 2826 2827/* control socket */ 2828extern void closecontrolsocket __P((bool)); 2829extern void clrcontrol __P((void)); 2830extern void control_command __P((int, ENVELOPE *)); 2831extern int opencontrolsocket __P((void)); 2832 2833#if MILTER 2834/* milter functions */ 2835extern void milter_config __P((char *, struct milter **, int)); 2836extern void milter_setup __P((char *)); 2837extern void milter_set_option __P((char *, char *, bool)); 2838extern bool milter_init __P((ENVELOPE *, char *, milters_T *)); 2839extern void milter_quit __P((ENVELOPE *)); 2840extern void milter_abort __P((ENVELOPE *)); 2841extern char *milter_connect __P((char *, SOCKADDR, ENVELOPE *, char *)); 2842extern char *milter_helo __P((char *, ENVELOPE *, char *)); 2843extern char *milter_envfrom __P((char **, ENVELOPE *, char *)); 2844extern char *milter_data_cmd __P((ENVELOPE *, char *)); 2845extern char *milter_envrcpt __P((char **, ENVELOPE *, char *, bool)); 2846extern char *milter_data __P((ENVELOPE *, char *)); 2847extern char *milter_unknown __P((char *, ENVELOPE *, char *)); 2848#endif /* MILTER */ 2849 2850extern char *addquotes __P((char *, SM_RPOOL_T *)); 2851extern char *arpadate __P((char *)); 2852extern bool atobool __P((char *)); 2853extern int atooct __P((char *)); 2854extern void auth_warning __P((ENVELOPE *, const char *, ...)); 2855extern int blocksignal __P((int)); 2856extern bool bitintersect __P((BITMAP256, BITMAP256)); 2857extern bool bitzerop __P((BITMAP256)); 2858extern int check_bodytype __P((char *)); 2859extern void buildfname __P((char *, char *, char *, int)); 2860extern bool chkclientmodifiers __P((int)); 2861extern bool chkdaemonmodifiers __P((int)); 2862extern int checkcompat __P((ADDRESS *, ENVELOPE *)); 2863#if XDEBUG 2864extern void checkfd012 __P((char *)); 2865extern void checkfdopen __P((int, char *)); 2866#else 2867# define checkfd012(str) ((void) 0) 2868# define checkfdopen(n, str) ((void) 0) 2869#endif 2870extern void checkfds __P((char *)); 2871extern bool chownsafe __P((int, bool)); 2872extern void cleanstrcpy __P((char *, char *, int)); 2873#if SM_CONF_SHM 2874extern void cleanup_shm __P((bool)); 2875#endif 2876extern void close_sendmail_pid __P((void)); 2877extern void clrdaemon __P((void)); 2878extern void collect __P((SM_FILE_T *, int, HDR **, ENVELOPE *, bool)); 2879extern time_t convtime __P((char *, int)); 2880extern char **copyplist __P((char **, bool, SM_RPOOL_T *)); 2881extern void copy_class __P((int, int)); 2882extern int count_open_connections __P((SOCKADDR *)); 2883extern time_t curtime __P((void)); 2884extern char *defcharset __P((ENVELOPE *)); 2885extern char *denlstring __P((char *, bool, bool)); 2886extern void dferror __P((SM_FILE_T *volatile, char *, ENVELOPE *)); 2887extern void disconnect __P((int, ENVELOPE *)); 2888extern void disk_status __P((SM_FILE_T *, char *)); 2889extern int dns_getcanonname __P((char *, int, bool, int *, int *)); 2890extern pid_t dofork __P((void)); 2891extern int drop_privileges __P((bool)); 2892extern int dsntoexitstat __P((char *)); 2893extern void dumpfd __P((int, bool, bool)); 2894#if SM_HEAP_CHECK 2895extern void dumpstab __P((void)); 2896#endif 2897extern void dumpstate __P((char *)); 2898extern bool enoughdiskspace __P((long, ENVELOPE *)); 2899extern char *exitstat __P((char *)); 2900extern void fatal_error __P((SM_EXC_T *)); 2901extern char *fgetfolded __P((char *, int *, SM_FILE_T *)); 2902extern void fill_fd __P((int, char *)); 2903extern char *find_character __P((char *, int)); 2904extern int finduser __P((char *, bool *, SM_MBDB_T *)); 2905extern void finis __P((bool, bool, volatile int)); 2906extern void fixcrlf __P((char *, bool)); 2907extern long freediskspace __P((const char *, long *)); 2908#if NETINET6 && NEEDSGETIPNODE 2909extern void freehostent __P((struct hostent *)); 2910#endif 2911extern char *get_column __P((char *, int, int, char *, int)); 2912extern char *getauthinfo __P((int, bool *)); 2913extern int getdtsize __P((void)); 2914extern int getla __P((void)); 2915extern char *getmodifiers __P((char *, BITMAP256)); 2916extern BITMAP256 *getrequests __P((ENVELOPE *)); 2917extern char *getvendor __P((int)); 2918extern void help __P((char *, ENVELOPE *)); 2919extern void init_md __P((int, char **)); 2920extern void initdaemon __P((void)); 2921extern void inithostmaps __P((void)); 2922extern void initmacros __P((ENVELOPE *)); 2923extern void initsetproctitle __P((int, char **, char **)); 2924extern void init_vendor_macros __P((ENVELOPE *)); 2925extern SIGFUNC_DECL intsig __P((int)); 2926extern bool isatom __P((const char *)); 2927extern bool isloopback __P((SOCKADDR sa)); 2928extern void load_if_names __P((void)); 2929extern bool lockfile __P((int, char *, char *, int)); 2930extern void log_sendmail_pid __P((ENVELOPE *)); 2931extern void logundelrcpts __P((ENVELOPE *, char *, int, bool)); 2932extern char lower __P((int)); 2933extern char *makelower_a __P((char **, SM_RPOOL_T *)); 2934extern void makelower_buf __P((char *, char *, int)); 2935extern int makeconnection_ds __P((char *, MCI *)); 2936#if DANE 2937extern int makeconnection __P((char *, volatile unsigned int, MCI *, ENVELOPE *, time_t, unsigned long *)); 2938#else 2939extern int makeconnection __P((char *, volatile unsigned int, MCI *, ENVELOPE *, time_t)); 2940#endif 2941extern void makeworkgroups __P((void)); 2942extern void markfailure __P((ENVELOPE *, ADDRESS *, MCI *, int, bool)); 2943extern void mark_work_group_restart __P((int, int)); 2944extern MCI *mci_new __P((SM_RPOOL_T *)); 2945extern char *munchstring __P((char *, char **, int)); 2946extern struct hostent *myhostname __P((char *, int)); 2947#if SM_HEAP_CHECK > 2 2948extern char *newstr_tagged __P((const char *, char *, int, int)); 2949# define newstr(str) newstr_tagged(str, "newstr:" __FILE__, __LINE__, SmHeapGroup) 2950#else 2951extern char *newstr __P((const char *)); 2952# define newstr_tagged(str, file, line, grp) newstr(str) 2953#endif 2954#if NISPLUS 2955extern char *nisplus_default_domain __P((void)); /* extern for Sun */ 2956#endif 2957extern bool path_is_dir __P((char *, bool)); 2958extern int pickqdir __P((QUEUEGRP *qg, long fsize, ENVELOPE *e)); 2959extern char *pintvl __P((time_t, bool)); 2960extern void printav __P((SM_FILE_T *, char **)); 2961extern void printmailer __P((SM_FILE_T *, MAILER *)); 2962extern void printnqe __P((SM_FILE_T *, char *)); 2963extern void printopenfds __P((bool)); 2964extern void printqueue __P((void)); 2965extern void printrules __P((void)); 2966extern pid_t prog_open __P((char **, int *, ENVELOPE *)); 2967extern bool putline __P((char *, MCI *)); 2968extern bool putxline __P((char *, size_t, MCI *, int)); 2969extern void queueup_macros __P((int, SM_FILE_T *, ENVELOPE *)); 2970extern void readcf __P((char *, bool, ENVELOPE *)); 2971extern SIGFUNC_DECL reapchild __P((int)); 2972extern int releasesignal __P((int)); 2973extern void resetlimits __P((void)); 2974extern void restart_daemon __P((void)); 2975extern void restart_marked_work_groups __P((void)); 2976extern bool rfc822_string __P((char *)); 2977extern void rmexpstab __P((void)); 2978extern bool savemail __P((ENVELOPE *, bool)); 2979extern void seed_random __P((void)); 2980extern void sendtoargv __P((char **, ENVELOPE *)); 2981extern void setclientoptions __P((char *)); 2982extern bool setdaemonoptions __P((char *)); 2983extern void setdefaults __P((ENVELOPE *)); 2984extern void setdefuser __P((void)); 2985extern bool setvendor __P((char *)); 2986extern void set_op_mode __P((int)); 2987extern void setoption __P((int, char *, bool, bool, ENVELOPE *)); 2988extern sigfunc_t setsignal __P((int, sigfunc_t)); 2989extern void sm_setuserenv __P((const char *, const char *)); 2990extern void settime __P((ENVELOPE *)); 2991#if STARTTLS 2992extern int set_tls_rd_tmo __P((int)); 2993#else 2994# define set_tls_rd_tmo(rd_tmo) 0 2995#endif 2996extern char *sfgets __P((char *, int, SM_FILE_T *, time_t, char *)); 2997extern char *shortenstring __P((const char *, size_t)); 2998extern char *shorten_hostname __P((char [])); 2999extern bool shorten_rfc822_string __P((char *, size_t)); 3000extern void showcfopts __P((void)); 3001extern void shutdown_daemon __P((void)); 3002extern void sm_closefrom __P((int lowest, int highest)); 3003extern void sm_close_on_exec __P((int lowest, int highest)); 3004extern struct hostent *sm_gethostbyname __P((char *, int)); 3005extern struct hostent *sm_gethostbyaddr __P((char *, int, int)); 3006extern void sm_getla __P((void)); 3007extern struct passwd *sm_getpwnam __P((char *)); 3008extern struct passwd *sm_getpwuid __P((UID_T)); 3009extern void sm_setproctitle __P((bool, ENVELOPE *, const char *, ...)); 3010extern pid_t sm_wait __P((int *)); 3011extern bool split_by_recipient __P((ENVELOPE *e)); 3012extern void stop_sendmail __P((void)); 3013extern void stripbackslash __P((char *)); 3014extern bool strreplnonprt __P((char *, int)); 3015extern bool strcontainedin __P((bool, char *, char *)); 3016extern int switch_map_find __P((char *, char *[], short [])); 3017#if STARTTLS 3018extern void tls_set_verify __P((SSL_CTX *, SSL *, bool)); 3019#endif 3020extern bool transienterror __P((int)); 3021extern void truncate_at_delim __P((char *, size_t, int)); 3022extern void tTflag __P((char *)); 3023extern void tTsetup __P((unsigned char *, unsigned int, char *)); 3024extern SIGFUNC_DECL tick __P((int)); 3025extern char *ttypath __P((void)); 3026extern void unlockqueue __P((ENVELOPE *)); 3027#if !HASUNSETENV 3028extern void unsetenv __P((char *)); 3029#endif 3030 3031/* update file system information: +/- some blocks */ 3032#if SM_CONF_SHM 3033extern void upd_qs __P((ENVELOPE *, int, int, char *)); 3034# define updfs(e, count, space, where) upd_qs(e, count, space, where) 3035#else /* SM_CONF_SHM */ 3036# define updfs(e, count, space, where) 3037# define upd_qs(e, count, space, where) 3038#endif /* SM_CONF_SHM */ 3039 3040extern char *username __P((void)); 3041extern bool usershellok __P((char *, char *)); 3042extern void vendor_post_defaults __P((ENVELOPE *)); 3043extern void vendor_pre_defaults __P((ENVELOPE *)); 3044extern int waitfor __P((pid_t)); 3045extern bool writable __P((char *, ADDRESS *, long)); 3046#if SM_HEAP_CHECK 3047# define xalloc(size) xalloc_tagged(size, __FILE__, __LINE__) 3048extern char *xalloc_tagged __P((int, char *, int)); 3049#else 3050extern char *xalloc __P((int)); 3051#endif /* SM_HEAP_CHECK */ 3052#if _FFR_XCNCT 3053extern int xconnect __P((SM_FILE_T *)); 3054#endif 3055extern void xputs __P((SM_FILE_T *, const char *)); 3056extern char *xtextify __P((char *, char *)); 3057extern bool xtextok __P((char *)); 3058extern int xunlink __P((char *)); 3059extern char *xuntextify __P((char *)); 3060 3061/* flags for collect() */ 3062#define SMTPMODE_NO 0 3063#define SMTPMODE_LAX 0x01 3064#define SMTPMODE_CRLF 0x02 /* CRLF.CRLF required for EOM */ 3065#define SMTPMODE_LF_421 0x04 /* bare LF: drop connection */ 3066#define SMTPMODE_CR_421 0x08 /* bare CR: drop connection */ 3067#define SMTPMODE_LF_SP 0x10 /* bare LF: replace with space */ 3068#define SMTPMODE_CR_SP 0x20 /* bare CR: replace with space */ 3069 3070#define ASSIGN_IFDIFF(old, new) \ 3071 do \ 3072 { \ 3073 if ((new) != (old)) \ 3074 { \ 3075 SM_FREE(old); \ 3076 old = new; \ 3077 new = NULL; \ 3078 } \ 3079 } while (0); 3080 3081#if USE_EAI 3082extern bool addr_is_ascii __P((const char *)); 3083extern bool str_is_print __P((const char *)); 3084extern const char *hn2alabel __P((const char *)); 3085#endif 3086 3087#if _FFR_RCPTFLAGS 3088extern bool newmodmailer __P((ADDRESS *, int)); 3089#endif 3090 3091#define SM_CLOSE_FP(fp) \ 3092 do \ 3093 { \ 3094 if ((fp) != NULL) \ 3095 { \ 3096 (void) sm_io_close((fp), SM_TIME_DEFAULT); \ 3097 fp = NULL; \ 3098 } \ 3099 } while (0); 3100 3101#undef EXTERN 3102#endif /* ! _SENDMAIL_H */ 3103