smtpd.h revision 1.466
1/* $OpenBSD: smtpd.h,v 1.466 2014/07/09 09:53:37 eric Exp $ */ 2 3/* 4 * Copyright (c) 2008 Gilles Chehade <gilles@poolp.org> 5 * Copyright (c) 2008 Pierre-Yves Ritschard <pyr@openbsd.org> 6 * Copyright (c) 2012 Eric Faurot <eric@openbsd.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21#ifndef nitems 22#define nitems(_a) (sizeof((_a)) / sizeof((_a)[0])) 23#endif 24 25#include "smtpd-defines.h" 26#include "smtpd-api.h" 27#include "ioev.h" 28#include "iobuf.h" 29 30#define CONF_FILE "/etc/mail/smtpd.conf" 31#define MAILNAME_FILE "/etc/mail/mailname" 32#define CA_FILE "/etc/ssl/cert.pem" 33 34#define PROC_COUNT 7 35 36#define MAX_HOPS_COUNT 100 37#define DEFAULT_MAX_BODY_SIZE (35*1024*1024) 38#define MAX_TAG_SIZE 32 39#define MAX_FILTER_NAME 32 40#define MAX_FILTER_ARGS 255 41 42#define EXPAND_BUFFER 1024 43 44#define SMTPD_QUEUE_EXPIRY (4 * 24 * 60 * 60) 45#define SMTPD_SOCKET "/var/run/smtpd.sock" 46#ifndef SMTPD_NAME 47#define SMTPD_NAME "OpenSMTPD" 48#endif 49#define SMTPD_VERSION "5.4.3" 50#define SMTPD_SESSION_TIMEOUT 300 51#define SMTPD_BACKLOG 5 52 53#define PATH_SMTPCTL "/usr/sbin/smtpctl" 54 55#define PATH_OFFLINE "/offline" 56#define PATH_PURGE "/purge" 57#define PATH_TEMPORARY "/temporary" 58 59#define PATH_LIBEXEC "/usr/libexec/smtpd" 60 61 62/* 63 * RFC 5322 defines these characters as valid, some of them are 64 * potentially dangerous and need to be escaped. 65 */ 66#define MAILADDR_ALLOWED "!#$%&'*/?^`{|}~+-=_" 67#define MAILADDR_ESCAPE "!#$%&'*/?^`{|}~" 68 69 70#define F_STARTTLS 0x01 71#define F_SMTPS 0x02 72#define F_TLS_OPTIONAL 0x04 73#define F_SSL (F_STARTTLS | F_SMTPS) 74#define F_AUTH 0x08 75#define F_BACKUP 0x10 /* XXX - MUST BE SYNC-ED WITH RELAY_BACKUP */ 76#define F_STARTTLS_REQUIRE 0x20 77#define F_AUTH_REQUIRE 0x40 78#define F_LMTP 0x80 79#define F_MASK_SOURCE 0x100 80#define F_TLS_VERIFY 0x200 81 82/* must match F_* for mta */ 83#define RELAY_STARTTLS 0x01 84#define RELAY_SMTPS 0x02 85#define RELAY_TLS_OPTIONAL 0x04 86#define RELAY_SSL (RELAY_STARTTLS | RELAY_SMTPS) 87#define RELAY_AUTH 0x08 88#define RELAY_BACKUP 0x10 /* XXX - MUST BE SYNC-ED WITH F_BACKUP */ 89#define RELAY_MX 0x20 90#define RELAY_LMTP 0x80 91#define RELAY_TLS_VERIFY 0x200 92 93#define MTA_EXT_DSN 0x400 94 95struct userinfo { 96 char username[SMTPD_MAXLOGNAME]; 97 char directory[SMTPD_MAXPATHLEN]; 98 uid_t uid; 99 gid_t gid; 100}; 101 102struct netaddr { 103 struct sockaddr_storage ss; 104 int bits; 105}; 106 107struct relayhost { 108 uint16_t flags; 109 char hostname[SMTPD_MAXHOSTNAMELEN]; 110 uint16_t port; 111 char pki_name[SMTPD_MAXPATHLEN]; 112 char authtable[SMTPD_MAXPATHLEN]; 113 char authlabel[SMTPD_MAXPATHLEN]; 114 char sourcetable[SMTPD_MAXPATHLEN]; 115 char heloname[SMTPD_MAXHOSTNAMELEN]; 116 char helotable[SMTPD_MAXPATHLEN]; 117}; 118 119struct credentials { 120 char username[SMTPD_MAXLINESIZE]; 121 char password[SMTPD_MAXLINESIZE]; 122}; 123 124struct destination { 125 char name[SMTPD_MAXHOSTNAMELEN]; 126}; 127 128struct source { 129 struct sockaddr_storage addr; 130}; 131 132struct addrname { 133 struct sockaddr_storage addr; 134 char name[SMTPD_MAXHOSTNAMELEN]; 135}; 136 137union lookup { 138 struct expand *expand; 139 struct credentials creds; 140 struct netaddr netaddr; 141 struct source source; 142 struct destination domain; 143 struct userinfo userinfo; 144 struct mailaddr mailaddr; 145 struct addrname addrname; 146}; 147 148/* 149 * Bump IMSG_VERSION whenever a change is made to enum imsg_type. 150 * This will ensure that we can never use a wrong version of smtpctl with smtpd. 151 */ 152#define IMSG_VERSION 10 153 154enum imsg_type { 155 IMSG_NONE, 156 157 IMSG_CTL_OK, 158 IMSG_CTL_FAIL, 159 160 IMSG_CTL_GET_DIGEST, 161 IMSG_CTL_GET_STATS, 162 IMSG_CTL_LIST_MESSAGES, 163 IMSG_CTL_LIST_ENVELOPES, 164 IMSG_CTL_MTA_SHOW_HOSTS, 165 IMSG_CTL_MTA_SHOW_RELAYS, 166 IMSG_CTL_MTA_SHOW_ROUTES, 167 IMSG_CTL_MTA_SHOW_HOSTSTATS, 168 IMSG_CTL_MTA_BLOCK, 169 IMSG_CTL_MTA_UNBLOCK, 170 IMSG_CTL_MTA_SHOW_BLOCK, 171 IMSG_CTL_PAUSE_EVP, 172 IMSG_CTL_PAUSE_MDA, 173 IMSG_CTL_PAUSE_MTA, 174 IMSG_CTL_PAUSE_SMTP, 175 IMSG_CTL_PROFILE, 176 IMSG_CTL_PROFILE_DISABLE, 177 IMSG_CTL_PROFILE_ENABLE, 178 IMSG_CTL_RESUME_EVP, 179 IMSG_CTL_RESUME_MDA, 180 IMSG_CTL_RESUME_MTA, 181 IMSG_CTL_RESUME_SMTP, 182 IMSG_CTL_RESUME_ROUTE, 183 IMSG_CTL_REMOVE, 184 IMSG_CTL_SCHEDULE, 185 IMSG_CTL_SHOW_STATUS, 186 IMSG_CTL_SHUTDOWN, 187 IMSG_CTL_TRACE_DISABLE, 188 IMSG_CTL_TRACE_ENABLE, 189 IMSG_CTL_UPDATE_TABLE, 190 IMSG_CTL_VERBOSE, 191 192 IMSG_CTL_SMTP_SESSION, 193 194 IMSG_CONF_START, 195 IMSG_CONF_END, 196 197 IMSG_STAT_INCREMENT, 198 IMSG_STAT_DECREMENT, 199 IMSG_STAT_SET, 200 201 IMSG_LKA_AUTHENTICATE, 202 IMSG_LKA_OPEN_FORWARD, 203 IMSG_LKA_ENVELOPE_SUBMIT, 204 IMSG_LKA_ENVELOPE_COMMIT, 205 206 IMSG_QUEUE_DELIVER, 207 IMSG_QUEUE_DELIVERY_OK, 208 IMSG_QUEUE_DELIVERY_TEMPFAIL, 209 IMSG_QUEUE_DELIVERY_PERMFAIL, 210 IMSG_QUEUE_DELIVERY_LOOP, 211 IMSG_QUEUE_ENVELOPE_COMMIT, 212 IMSG_QUEUE_ENVELOPE_REMOVE, 213 IMSG_QUEUE_ENVELOPE_SCHEDULE, 214 IMSG_QUEUE_ENVELOPE_SUBMIT, 215 IMSG_QUEUE_HOLDQ_HOLD, 216 IMSG_QUEUE_HOLDQ_RELEASE, 217 IMSG_QUEUE_MESSAGE_COMMIT, 218 IMSG_QUEUE_MESSAGE_ROLLBACK, 219 IMSG_QUEUE_SMTP_SESSION, 220 IMSG_QUEUE_TRANSFER, 221 222 IMSG_MDA_DELIVERY_OK, 223 IMSG_MDA_DELIVERY_TEMPFAIL, 224 IMSG_MDA_DELIVERY_PERMFAIL, 225 IMSG_MDA_DELIVERY_LOOP, 226 IMSG_MDA_DELIVERY_HOLD, 227 IMSG_MDA_DONE, 228 IMSG_MDA_FORK, 229 IMSG_MDA_HOLDQ_RELEASE, 230 IMSG_MDA_LOOKUP_USERINFO, 231 IMSG_MDA_KILL, 232 IMSG_MDA_OPEN_MESSAGE, 233 234 IMSG_MFA_SMTP_RESPONSE, 235 236 IMSG_MTA_DELIVERY_OK, 237 IMSG_MTA_DELIVERY_TEMPFAIL, 238 IMSG_MTA_DELIVERY_PERMFAIL, 239 IMSG_MTA_DELIVERY_LOOP, 240 IMSG_MTA_DELIVERY_HOLD, 241 IMSG_MTA_DNS_HOST, 242 IMSG_MTA_DNS_HOST_END, 243 IMSG_MTA_DNS_PTR, 244 IMSG_MTA_DNS_MX, 245 IMSG_MTA_DNS_MX_PREFERENCE, 246 IMSG_MTA_HOLDQ_RELEASE, 247 IMSG_MTA_LOOKUP_CREDENTIALS, 248 IMSG_MTA_LOOKUP_SOURCE, 249 IMSG_MTA_LOOKUP_HELO, 250 IMSG_MTA_OPEN_MESSAGE, 251 IMSG_MTA_SCHEDULE, 252 IMSG_MTA_SSL_INIT, 253 IMSG_MTA_SSL_VERIFY_CERT, 254 IMSG_MTA_SSL_VERIFY_CHAIN, 255 IMSG_MTA_SSL_VERIFY, 256 257 IMSG_SCHED_ENVELOPE_BOUNCE, 258 IMSG_SCHED_ENVELOPE_DELIVER, 259 IMSG_SCHED_ENVELOPE_EXPIRE, 260 IMSG_SCHED_ENVELOPE_INJECT, 261 IMSG_SCHED_ENVELOPE_REMOVE, 262 IMSG_SCHED_ENVELOPE_TRANSFER, 263 264 IMSG_SMTP_AUTHENTICATE, 265 IMSG_SMTP_DNS_PTR, 266 IMSG_SMTP_MESSAGE_COMMIT, 267 IMSG_SMTP_MESSAGE_CREATE, 268 IMSG_SMTP_MESSAGE_ROLLBACK, 269 IMSG_SMTP_MESSAGE_OPEN, 270 IMSG_SMTP_EXPAND_RCPT, 271 IMSG_SMTP_LOOKUP_HELO, 272 IMSG_SMTP_SSL_INIT, 273 IMSG_SMTP_SSL_VERIFY_CERT, 274 IMSG_SMTP_SSL_VERIFY_CHAIN, 275 IMSG_SMTP_SSL_VERIFY, 276 277 IMSG_SMTP_REQ_CONNECT, 278 IMSG_SMTP_REQ_HELO, 279 IMSG_SMTP_REQ_MAIL, 280 IMSG_SMTP_REQ_RCPT, 281 IMSG_SMTP_REQ_DATA, 282 IMSG_SMTP_REQ_EOM, 283 IMSG_SMTP_EVENT_RSET, 284 IMSG_SMTP_EVENT_COMMIT, 285 IMSG_SMTP_EVENT_ROLLBACK, 286 IMSG_SMTP_EVENT_DISCONNECT, 287 288 IMSG_CA_PRIVENC, 289 IMSG_CA_PRIVDEC 290}; 291 292enum blockmodes { 293 BM_NORMAL, 294 BM_NONBLOCK 295}; 296 297enum smtp_proc_type { 298 PROC_PARENT = 0, 299 PROC_LKA, 300 PROC_QUEUE, 301 PROC_CONTROL, 302 PROC_SCHEDULER, 303 PROC_PONY, 304 PROC_CA, 305 306 PROC_FILTER, 307 PROC_CLIENT, 308}; 309 310enum table_type { 311 T_NONE = 0, 312 T_DYNAMIC = 0x01, /* table with external source */ 313 T_LIST = 0x02, /* table holding a list */ 314 T_HASH = 0x04, /* table holding a hash table */ 315}; 316 317struct table { 318 char t_name[SMTPD_MAXLINESIZE]; 319 enum table_type t_type; 320 char t_config[SMTPD_MAXPATHLEN]; 321 322 struct dict t_dict; 323 324 void *t_handle; 325 struct table_backend *t_backend; 326 void *t_iter; 327}; 328 329struct table_backend { 330 const unsigned int services; 331 int (*config)(struct table *); 332 void *(*open)(struct table *); 333 int (*update)(struct table *); 334 void (*close)(void *); 335 int (*lookup)(void *, struct dict *, const char *, enum table_service, union lookup *); 336 int (*fetch)(void *, struct dict *, enum table_service, union lookup *); 337}; 338 339 340enum dest_type { 341 DEST_DOM, 342 DEST_VDOM 343}; 344 345enum action_type { 346 A_NONE, 347 A_RELAY, 348 A_RELAYVIA, 349 A_MAILDIR, 350 A_MBOX, 351 A_FILENAME, 352 A_MDA, 353 A_LMTP 354}; 355 356enum decision { 357 R_REJECT, 358 R_ACCEPT 359}; 360 361struct rule { 362 TAILQ_ENTRY(rule) r_entry; 363 enum decision r_decision; 364 uint8_t r_nottag; 365 char r_tag[MAX_TAG_SIZE]; 366 367 uint8_t r_notsources; 368 struct table *r_sources; 369 370 uint8_t r_notsenders; 371 struct table *r_senders; 372 373 uint8_t r_notrecipients; 374 struct table *r_recipients; 375 376 uint8_t r_notdestination; 377 enum dest_type r_desttype; 378 struct table *r_destination; 379 380 enum action_type r_action; 381 union rule_dest { 382 char buffer[EXPAND_BUFFER]; 383 struct relayhost relayhost; 384 } r_value; 385 386 struct mailaddr *r_as; 387 struct table *r_mapping; 388 struct table *r_userbase; 389 time_t r_qexpire; 390 uint8_t r_forwardonly; 391}; 392 393struct delivery_mda { 394 enum action_type method; 395 char usertable[SMTPD_MAXPATHLEN]; 396 char username[SMTPD_MAXLOGNAME]; 397 char buffer[EXPAND_BUFFER]; 398}; 399 400struct delivery_mta { 401 struct relayhost relay; 402}; 403 404enum bounce_type { 405 B_ERROR, 406 B_WARNING, 407 B_DSN 408}; 409 410enum dsn_ret { 411 DSN_RETFULL = 1, 412 DSN_RETHDRS 413}; 414 415struct delivery_bounce { 416 enum bounce_type type; 417 time_t delay; 418 time_t expire; 419 enum dsn_ret dsn_ret; 420 int mta_without_dsn; 421}; 422 423enum expand_type { 424 EXPAND_INVALID, 425 EXPAND_USERNAME, 426 EXPAND_FILENAME, 427 EXPAND_FILTER, 428 EXPAND_INCLUDE, 429 EXPAND_ADDRESS, 430 EXPAND_ERROR 431}; 432 433struct expandnode { 434 RB_ENTRY(expandnode) entry; 435 TAILQ_ENTRY(expandnode) tq_entry; 436 enum expand_type type; 437 int sameuser; 438 int alias; 439 struct rule *rule; 440 struct expandnode *parent; 441 unsigned int depth; 442 struct table *mapping; 443 struct table *userbase; 444 union { 445 /* 446 * user field handles both expansion user and system user 447 * so we MUST make it large enough to fit a mailaddr user 448 */ 449 char user[SMTPD_MAXLOCALPARTSIZE]; 450 char buffer[EXPAND_BUFFER]; 451 struct mailaddr mailaddr; 452 } u; 453}; 454 455struct expand { 456 RB_HEAD(expandtree, expandnode) tree; 457 TAILQ_HEAD(xnodes, expandnode) *queue; 458 int alias; 459 size_t nb_nodes; 460 struct rule *rule; 461 struct expandnode *parent; 462}; 463 464#define DSN_SUCCESS 0x01 465#define DSN_FAILURE 0x02 466#define DSN_DELAY 0x04 467#define DSN_NEVER 0x08 468 469#define DSN_ENVID_LEN 100 470 471#define SMTPD_ENVELOPE_VERSION 2 472struct envelope { 473 TAILQ_ENTRY(envelope) entry; 474 475 char tag[MAX_TAG_SIZE]; 476 477 uint32_t version; 478 uint64_t id; 479 enum envelope_flags flags; 480 481 char smtpname[SMTPD_MAXHOSTNAMELEN]; 482 char helo[SMTPD_MAXHOSTNAMELEN]; 483 char hostname[SMTPD_MAXHOSTNAMELEN]; 484 char errorline[SMTPD_MAXLINESIZE]; 485 struct sockaddr_storage ss; 486 487 struct mailaddr sender; 488 struct mailaddr rcpt; 489 struct mailaddr dest; 490 491 enum delivery_type type; 492 union { 493 struct delivery_mda mda; 494 struct delivery_mta mta; 495 struct delivery_bounce bounce; 496 } agent; 497 498 uint16_t retry; 499 time_t creation; 500 time_t expire; 501 time_t lasttry; 502 time_t nexttry; 503 time_t lastbounce; 504 505 struct mailaddr dsn_orcpt; 506 char dsn_envid[DSN_ENVID_LEN+1]; 507 uint8_t dsn_notify; 508 enum dsn_ret dsn_ret; 509 510 uint8_t esc_class; 511 uint8_t esc_code; 512}; 513 514struct listener { 515 uint16_t flags; 516 int fd; 517 struct sockaddr_storage ss; 518 in_port_t port; 519 struct timeval timeout; 520 struct event ev; 521 char pki_name[SMTPD_MAXPATHLEN]; 522 char tag[MAX_TAG_SIZE]; 523 char filter[SMTPD_MAXPATHLEN]; 524 char authtable[SMTPD_MAXLINESIZE]; 525 char hostname[SMTPD_MAXHOSTNAMELEN]; 526 char hostnametable[SMTPD_MAXPATHLEN]; 527 TAILQ_ENTRY(listener) entry; 528}; 529 530struct smtpd { 531 char sc_conffile[SMTPD_MAXPATHLEN]; 532 size_t sc_maxsize; 533 534#define SMTPD_OPT_VERBOSE 0x00000001 535#define SMTPD_OPT_NOACTION 0x00000002 536 uint32_t sc_opts; 537 538#define SMTPD_EXITING 0x00000001 539#define SMTPD_MDA_PAUSED 0x00000002 540#define SMTPD_MTA_PAUSED 0x00000004 541#define SMTPD_SMTP_PAUSED 0x00000008 542#define SMTPD_MDA_BUSY 0x00000010 543#define SMTPD_MTA_BUSY 0x00000020 544#define SMTPD_BOUNCE_BUSY 0x00000040 545#define SMTPD_SMTP_DISABLED 0x00000080 546 uint32_t sc_flags; 547 548#define QUEUE_COMPRESSION 0x00000001 549#define QUEUE_ENCRYPTION 0x00000002 550#define QUEUE_EVPCACHE 0x00000004 551 uint32_t sc_queue_flags; 552 char *sc_queue_key; 553 size_t sc_queue_evpcache_size; 554 555 size_t sc_mda_max_session; 556 size_t sc_mda_max_user_session; 557 size_t sc_mda_task_hiwat; 558 size_t sc_mda_task_lowat; 559 size_t sc_mda_task_release; 560 561 size_t sc_mta_max_deferred; 562 563 size_t sc_scheduler_max_inflight; 564 size_t sc_scheduler_max_evp_batch_size; 565 size_t sc_scheduler_max_msg_batch_size; 566 size_t sc_scheduler_max_schedule; 567 568 int sc_qexpire; 569#define MAX_BOUNCE_WARN 4 570 time_t sc_bounce_warn[MAX_BOUNCE_WARN]; 571 char sc_hostname[SMTPD_MAXHOSTNAMELEN]; 572 struct stat_backend *sc_stat; 573 struct compress_backend *sc_comp; 574 575 time_t sc_uptime; 576 577 TAILQ_HEAD(listenerlist, listener) *sc_listeners; 578 579 TAILQ_HEAD(rulelist, rule) *sc_rules; 580 581 struct dict *sc_pki_dict; 582 struct dict *sc_ssl_dict; 583 584 struct dict *sc_tables_dict; /* keyed lookup */ 585 586 struct dict *sc_limits_dict; 587 588 struct dict sc_filters; 589 uint32_t filtermask; 590}; 591 592#define TRACE_DEBUG 0x0001 593#define TRACE_IMSG 0x0002 594#define TRACE_IO 0x0004 595#define TRACE_SMTP 0x0008 596#define TRACE_FILTERS 0x0010 597#define TRACE_MTA 0x0020 598#define TRACE_BOUNCE 0x0040 599#define TRACE_SCHEDULER 0x0080 600#define TRACE_LOOKUP 0x0100 601#define TRACE_STAT 0x0200 602#define TRACE_RULES 0x0400 603#define TRACE_MPROC 0x0800 604#define TRACE_EXPAND 0x1000 605#define TRACE_TABLES 0x2000 606#define TRACE_QUEUE 0x4000 607 608#define PROFILE_TOSTAT 0x0001 609#define PROFILE_IMSG 0x0002 610#define PROFILE_QUEUE 0x0004 611#define PROFILE_BUFFERS 0x0008 612 613struct forward_req { 614 uint64_t id; 615 uint8_t status; 616 617 char user[SMTPD_MAXLOGNAME]; 618 uid_t uid; 619 gid_t gid; 620 char directory[SMTPD_MAXPATHLEN]; 621}; 622 623struct deliver { 624 char to[SMTPD_MAXPATHLEN]; 625 char from[SMTPD_MAXPATHLEN]; 626 char dest[SMTPD_MAXLINESIZE]; 627 char user[SMTPD_MAXLOGNAME]; 628 short mode; 629 630 struct userinfo userinfo; 631}; 632 633#define MAX_FILTER_PER_CHAIN 16 634struct filter_conf { 635 int chain; 636 int done; 637 int argc; 638 char *name; 639 char *argv[MAX_FILTER_ARGS + 1]; 640 char *path; 641}; 642 643struct mta_host { 644 SPLAY_ENTRY(mta_host) entry; 645 struct sockaddr *sa; 646 char *ptrname; 647 int refcount; 648 size_t nconn; 649 time_t lastconn; 650 time_t lastptrquery; 651 652#define HOST_IGNORE 0x01 653 int flags; 654}; 655 656struct mta_mx { 657 TAILQ_ENTRY(mta_mx) entry; 658 struct mta_host *host; 659 int preference; 660}; 661 662struct mta_domain { 663 SPLAY_ENTRY(mta_domain) entry; 664 char *name; 665 int flags; 666 TAILQ_HEAD(, mta_mx) mxs; 667 int mxstatus; 668 int refcount; 669 size_t nconn; 670 time_t lastconn; 671 time_t lastmxquery; 672}; 673 674struct mta_source { 675 SPLAY_ENTRY(mta_source) entry; 676 struct sockaddr *sa; 677 int refcount; 678 size_t nconn; 679 time_t lastconn; 680}; 681 682struct mta_connector { 683 struct mta_source *source; 684 struct mta_relay *relay; 685 686#define CONNECTOR_ERROR_FAMILY 0x0001 687#define CONNECTOR_ERROR_SOURCE 0x0002 688#define CONNECTOR_ERROR_MX 0x0004 689#define CONNECTOR_ERROR_ROUTE_NET 0x0008 690#define CONNECTOR_ERROR_ROUTE_SMTP 0x0010 691#define CONNECTOR_ERROR_ROUTE 0x0018 692#define CONNECTOR_ERROR_BLOCKED 0x0020 693#define CONNECTOR_ERROR 0x00ff 694 695#define CONNECTOR_LIMIT_HOST 0x0100 696#define CONNECTOR_LIMIT_ROUTE 0x0200 697#define CONNECTOR_LIMIT_SOURCE 0x0400 698#define CONNECTOR_LIMIT_RELAY 0x0800 699#define CONNECTOR_LIMIT_CONN 0x1000 700#define CONNECTOR_LIMIT_DOMAIN 0x2000 701#define CONNECTOR_LIMIT 0xff00 702 703#define CONNECTOR_NEW 0x10000 704#define CONNECTOR_WAIT 0x20000 705 int flags; 706 707 int refcount; 708 size_t nconn; 709 time_t lastconn; 710}; 711 712struct mta_route { 713 SPLAY_ENTRY(mta_route) entry; 714 uint64_t id; 715 struct mta_source *src; 716 struct mta_host *dst; 717#define ROUTE_NEW 0x01 718#define ROUTE_RUNQ 0x02 719#define ROUTE_KEEPALIVE 0x04 720#define ROUTE_DISABLED 0xf0 721#define ROUTE_DISABLED_NET 0x10 722#define ROUTE_DISABLED_SMTP 0x20 723 int flags; 724 int nerror; 725 int penalty; 726 int refcount; 727 size_t nconn; 728 time_t lastconn; 729 time_t lastdisc; 730 time_t lastpenalty; 731}; 732 733struct mta_limits { 734 size_t maxconn_per_host; 735 size_t maxconn_per_route; 736 size_t maxconn_per_source; 737 size_t maxconn_per_connector; 738 size_t maxconn_per_relay; 739 size_t maxconn_per_domain; 740 741 time_t conndelay_host; 742 time_t conndelay_route; 743 time_t conndelay_source; 744 time_t conndelay_connector; 745 time_t conndelay_relay; 746 time_t conndelay_domain; 747 748 time_t discdelay_route; 749 750 size_t max_mail_per_session; 751 time_t sessdelay_transaction; 752 time_t sessdelay_keepalive; 753 754 size_t max_failures_per_session; 755 756 int family; 757 758 int task_hiwat; 759 int task_lowat; 760 int task_release; 761}; 762 763struct mta_relay { 764 SPLAY_ENTRY(mta_relay) entry; 765 uint64_t id; 766 767 struct mta_domain *domain; 768 struct mta_limits *limits; 769 int flags; 770 char *backupname; 771 int backuppref; 772 char *sourcetable; 773 uint16_t port; 774 char *pki_name; 775 char *authtable; 776 char *authlabel; 777 char *helotable; 778 char *heloname; 779 char *secret; 780 781 int state; 782 size_t ntask; 783 TAILQ_HEAD(, mta_task) tasks; 784 785 struct tree connectors; 786 size_t sourceloop; 787 time_t lastsource; 788 time_t nextsource; 789 790 int fail; 791 char *failstr; 792 793#define RELAY_WAIT_MX 0x01 794#define RELAY_WAIT_PREFERENCE 0x02 795#define RELAY_WAIT_SECRET 0x04 796#define RELAY_WAIT_LIMITS 0x08 797#define RELAY_WAIT_SOURCE 0x10 798#define RELAY_WAIT_CONNECTOR 0x20 799#define RELAY_WAITMASK 0x3f 800 int status; 801 802 int refcount; 803 size_t nconn; 804 size_t nconn_ready; 805 time_t lastconn; 806}; 807 808struct mta_envelope { 809 TAILQ_ENTRY(mta_envelope) entry; 810 uint64_t id; 811 uint64_t session; 812 time_t creation; 813 char *dest; 814 char *rcpt; 815 struct mta_task *task; 816 int delivery; 817 818 int ext; 819 char *dsn_orcpt; 820 char dsn_envid[DSN_ENVID_LEN+1]; 821 uint8_t dsn_notify; 822 enum dsn_ret dsn_ret; 823 824 char status[SMTPD_MAXLINESIZE]; 825}; 826 827struct mta_task { 828 TAILQ_ENTRY(mta_task) entry; 829 struct mta_relay *relay; 830 uint32_t msgid; 831 TAILQ_HEAD(, mta_envelope) envelopes; 832 char *sender; 833}; 834 835struct passwd; 836 837struct queue_backend { 838 int (*init)(struct passwd *, int, const char *); 839}; 840 841struct compress_backend { 842 size_t (*compress_chunk)(void *, size_t, void *, size_t); 843 size_t (*uncompress_chunk)(void *, size_t, void *, size_t); 844 int (*compress_file)(FILE *, FILE *); 845 int (*uncompress_file)(FILE *, FILE *); 846}; 847 848/* auth structures */ 849enum auth_type { 850 AUTH_BSD, 851 AUTH_PWD, 852}; 853 854struct auth_backend { 855 int (*authenticate)(char *, char *); 856}; 857 858 859/* delivery_backend */ 860struct delivery_backend { 861 int allow_root; 862 void (*open)(struct deliver *); 863}; 864 865struct scheduler_backend { 866 int (*init)(void); 867 868 int (*insert)(struct scheduler_info *); 869 size_t (*commit)(uint32_t); 870 size_t (*rollback)(uint32_t); 871 872 int (*update)(struct scheduler_info *); 873 int (*delete)(uint64_t); 874 int (*hold)(uint64_t, uint64_t); 875 int (*release)(int, uint64_t, int); 876 877 int (*batch)(int, struct scheduler_batch *); 878 879 size_t (*messages)(uint32_t, uint32_t *, size_t); 880 size_t (*envelopes)(uint64_t, struct evpstate *, size_t); 881 int (*schedule)(uint64_t); 882 int (*remove)(uint64_t); 883 int (*suspend)(uint64_t); 884 int (*resume)(uint64_t); 885}; 886 887enum stat_type { 888 STAT_COUNTER, 889 STAT_TIMESTAMP, 890 STAT_TIMEVAL, 891 STAT_TIMESPEC, 892}; 893 894struct stat_value { 895 enum stat_type type; 896 union stat_v { 897 size_t counter; 898 time_t timestamp; 899 struct timeval tv; 900 struct timespec ts; 901 } u; 902}; 903 904#define STAT_KEY_SIZE 1024 905struct stat_kv { 906 void *iter; 907 char key[STAT_KEY_SIZE]; 908 struct stat_value val; 909}; 910 911struct stat_backend { 912 void (*init)(void); 913 void (*close)(void); 914 void (*increment)(const char *, size_t); 915 void (*decrement)(const char *, size_t); 916 void (*set)(const char *, const struct stat_value *); 917 int (*iter)(void **, char **, struct stat_value *); 918}; 919 920struct stat_digest { 921 time_t startup; 922 time_t timestamp; 923 924 size_t clt_connect; 925 size_t clt_disconnect; 926 927 size_t evp_enqueued; 928 size_t evp_dequeued; 929 930 size_t evp_expired; 931 size_t evp_removed; 932 size_t evp_bounce; 933 934 size_t dlv_ok; 935 size_t dlv_permfail; 936 size_t dlv_tempfail; 937 size_t dlv_loop; 938}; 939 940 941struct mproc { 942 pid_t pid; 943 char *name; 944 int proc; 945 void (*handler)(struct mproc *, struct imsg *); 946 struct imsgbuf imsgbuf; 947 948 char *m_buf; 949 size_t m_alloc; 950 size_t m_pos; 951 uint32_t m_type; 952 uint32_t m_peerid; 953 pid_t m_pid; 954 int m_fd; 955 956 int enable; 957 short events; 958 struct event ev; 959 void *data; 960 961 off_t msg_in; 962 off_t msg_out; 963 off_t bytes_in; 964 off_t bytes_out; 965 size_t bytes_queued; 966 size_t bytes_queued_max; 967}; 968 969struct msg { 970 const uint8_t *pos; 971 const uint8_t *end; 972}; 973 974extern enum smtp_proc_type smtpd_process; 975 976extern int verbose; 977extern int profiling; 978 979extern struct mproc *p_control; 980extern struct mproc *p_parent; 981extern struct mproc *p_lka; 982extern struct mproc *p_queue; 983extern struct mproc *p_scheduler; 984extern struct mproc *p_pony; 985extern struct mproc *p_ca; 986 987extern struct smtpd *env; 988extern void (*imsg_callback)(struct mproc *, struct imsg *); 989 990struct imsgproc { 991 pid_t pid; 992 struct event ev; 993 struct imsgbuf *ibuf; 994 char *path; 995 char *name; 996 void (*cb)(struct imsg *, void *); 997 void *cb_arg; 998}; 999 1000/* inter-process structures */ 1001 1002struct bounce_req_msg { 1003 uint64_t evpid; 1004 time_t timestamp; 1005 struct delivery_bounce bounce; 1006}; 1007 1008enum dns_error { 1009 DNS_OK = 0, 1010 DNS_RETRY, 1011 DNS_EINVAL, 1012 DNS_ENONAME, 1013 DNS_ENOTFOUND, 1014}; 1015 1016enum lka_resp_status { 1017 LKA_OK, 1018 LKA_TEMPFAIL, 1019 LKA_PERMFAIL 1020}; 1021 1022enum ca_resp_status { 1023 CA_OK, 1024 CA_FAIL 1025}; 1026 1027struct ca_cert_req_msg { 1028 uint64_t reqid; 1029 char name[SMTPD_MAXHOSTNAMELEN]; 1030}; 1031 1032struct ca_cert_resp_msg { 1033 uint64_t reqid; 1034 enum ca_resp_status status; 1035 char *cert; 1036 off_t cert_len; 1037}; 1038 1039struct ca_vrfy_req_msg { 1040 uint64_t reqid; 1041 char pkiname[SMTPD_MAXHOSTNAMELEN]; 1042 unsigned char *cert; 1043 off_t cert_len; 1044 size_t n_chain; 1045 size_t chain_offset; 1046 unsigned char **chain_cert; 1047 off_t *chain_cert_len; 1048}; 1049 1050struct ca_vrfy_resp_msg { 1051 uint64_t reqid; 1052 enum ca_resp_status status; 1053}; 1054 1055 1056/* aliases.c */ 1057int aliases_get(struct expand *, const char *); 1058int aliases_virtual_check(struct table *, const struct mailaddr *); 1059int aliases_virtual_get(struct expand *, const struct mailaddr *); 1060int alias_parse(struct expandnode *, const char *); 1061 1062 1063/* auth.c */ 1064struct auth_backend *auth_backend_lookup(enum auth_type); 1065 1066 1067/* bounce.c */ 1068void bounce_add(uint64_t); 1069void bounce_fd(int); 1070 1071 1072/* ca.c */ 1073pid_t ca(void); 1074int ca_X509_verify(void *, void *, const char *, const char *, const char **); 1075void ca_imsg(struct mproc *, struct imsg *); 1076void ca_init(void); 1077void ca_engine_init(void); 1078 1079/* compress_backend.c */ 1080struct compress_backend *compress_backend_lookup(const char *); 1081size_t compress_chunk(void *, size_t, void *, size_t); 1082size_t uncompress_chunk(void *, size_t, void *, size_t); 1083int compress_file(FILE *, FILE *); 1084int uncompress_file(FILE *, FILE *); 1085 1086/* config.c */ 1087#define PURGE_LISTENERS 0x01 1088#define PURGE_TABLES 0x02 1089#define PURGE_RULES 0x04 1090#define PURGE_PKI 0x08 1091#define PURGE_PKI_KEYS 0x10 1092#define PURGE_EVERYTHING 0x0f 1093void purge_config(uint8_t); 1094void init_pipes(void); 1095void config_process(enum smtp_proc_type); 1096void config_peer(enum smtp_proc_type); 1097void config_done(void); 1098 1099 1100/* control.c */ 1101pid_t control(void); 1102int control_create_socket(void); 1103 1104 1105/* crypto.c */ 1106int crypto_setup(const char *, size_t); 1107int crypto_encrypt_file(FILE *, FILE *); 1108int crypto_decrypt_file(FILE *, FILE *); 1109size_t crypto_encrypt_buffer(const char *, size_t, char *, size_t); 1110size_t crypto_decrypt_buffer(const char *, size_t, char *, size_t); 1111 1112 1113/* delivery.c */ 1114struct delivery_backend *delivery_backend_lookup(enum action_type); 1115 1116 1117/* dns.c */ 1118void dns_imsg(struct mproc *, struct imsg *); 1119 1120 1121/* enqueue.c */ 1122int enqueue(int, char **); 1123 1124 1125/* envelope.c */ 1126void envelope_set_errormsg(struct envelope *, char *, ...); 1127void envelope_set_esc_class(struct envelope *, enum enhanced_status_class); 1128void envelope_set_esc_code(struct envelope *, enum enhanced_status_code); 1129int envelope_load_buffer(struct envelope *, const char *, size_t); 1130int envelope_dump_buffer(const struct envelope *, char *, size_t); 1131 1132 1133/* expand.c */ 1134int expand_cmp(struct expandnode *, struct expandnode *); 1135void expand_insert(struct expand *, struct expandnode *); 1136struct expandnode *expand_lookup(struct expand *, struct expandnode *); 1137void expand_clear(struct expand *); 1138void expand_free(struct expand *); 1139int expand_line(struct expand *, const char *, int); 1140int expand_to_text(struct expand *, char *, size_t); 1141RB_PROTOTYPE(expandtree, expandnode, nodes, expand_cmp); 1142 1143 1144/* forward.c */ 1145int forwards_get(int, struct expand *); 1146 1147 1148/* imsgproc.c */ 1149void imsgproc_init(void); 1150struct imsgproc *imsgproc_fork(const char *, const char *, 1151 void (*)(struct imsg *, void *), void *); 1152void imsgproc_set_read(struct imsgproc *); 1153void imsgproc_set_write(struct imsgproc *); 1154void imsgproc_set_read_write(struct imsgproc *); 1155void imsgproc_reset_callback(struct imsgproc *, void (*)(struct imsg *, void *), void *); 1156 1157/* limit.c */ 1158void limit_mta_set_defaults(struct mta_limits *); 1159int limit_mta_set(struct mta_limits *, const char*, int64_t); 1160 1161/* lka.c */ 1162pid_t lka(void); 1163 1164 1165/* lka_session.c */ 1166void lka_session(uint64_t, struct envelope *); 1167void lka_session_forward_reply(struct forward_req *, int); 1168 1169 1170/* log.c */ 1171void vlog(int, const char *, va_list); 1172 1173 1174/* mda.c */ 1175void mda_postfork(void); 1176void mda_postprivdrop(void); 1177void mda_imsg(struct mproc *, struct imsg *); 1178 1179 1180/* mproc.c */ 1181int mproc_fork(struct mproc *, const char*, char **); 1182void mproc_init(struct mproc *, int); 1183void mproc_clear(struct mproc *); 1184void mproc_enable(struct mproc *); 1185void mproc_disable(struct mproc *); 1186void mproc_event_add(struct mproc *); 1187void m_compose(struct mproc *, uint32_t, uint32_t, pid_t, int, void *, size_t); 1188void m_composev(struct mproc *, uint32_t, uint32_t, pid_t, int, 1189 const struct iovec *, int); 1190void m_forward(struct mproc *, struct imsg *); 1191void m_create(struct mproc *, uint32_t, uint32_t, pid_t, int); 1192void m_add(struct mproc *, const void *, size_t); 1193void m_add_int(struct mproc *, int); 1194void m_add_u32(struct mproc *, uint32_t); 1195void m_add_size(struct mproc *, size_t); 1196void m_add_time(struct mproc *, time_t); 1197void m_add_string(struct mproc *, const char *); 1198void m_add_data(struct mproc *, const void *, size_t); 1199void m_add_evpid(struct mproc *, uint64_t); 1200void m_add_msgid(struct mproc *, uint32_t); 1201void m_add_id(struct mproc *, uint64_t); 1202void m_add_sockaddr(struct mproc *, const struct sockaddr *); 1203void m_add_mailaddr(struct mproc *, const struct mailaddr *); 1204void m_add_envelope(struct mproc *, const struct envelope *); 1205void m_add_params(struct mproc *, struct dict *); 1206void m_close(struct mproc *); 1207void m_flush(struct mproc *); 1208 1209void m_msg(struct msg *, struct imsg *); 1210int m_is_eom(struct msg *); 1211void m_end(struct msg *); 1212void m_get_int(struct msg *, int *); 1213void m_get_size(struct msg *, size_t *); 1214void m_get_u32(struct msg *, uint32_t *); 1215void m_get_time(struct msg *, time_t *); 1216void m_get_string(struct msg *, const char **); 1217void m_get_data(struct msg *, const void **, size_t *); 1218void m_get_evpid(struct msg *, uint64_t *); 1219void m_get_msgid(struct msg *, uint32_t *); 1220void m_get_id(struct msg *, uint64_t *); 1221void m_get_sockaddr(struct msg *, struct sockaddr *); 1222void m_get_mailaddr(struct msg *, struct mailaddr *); 1223void m_get_envelope(struct msg *, struct envelope *); 1224void m_get_params(struct msg *, struct dict *); 1225void m_clear_params(struct dict *); 1226 1227 1228/* mta.c */ 1229void mta_postfork(void); 1230void mta_postprivdrop(void); 1231void mta_imsg(struct mproc *, struct imsg *); 1232void mta_route_ok(struct mta_relay *, struct mta_route *); 1233void mta_route_error(struct mta_relay *, struct mta_route *); 1234void mta_route_down(struct mta_relay *, struct mta_route *); 1235void mta_route_collect(struct mta_relay *, struct mta_route *); 1236void mta_source_error(struct mta_relay *, struct mta_route *, const char *); 1237void mta_delivery_log(struct mta_envelope *, const char *, const char *, int, const char *); 1238void mta_delivery_notify(struct mta_envelope *); 1239struct mta_task *mta_route_next_task(struct mta_relay *, struct mta_route *); 1240const char *mta_host_to_text(struct mta_host *); 1241const char *mta_relay_to_text(struct mta_relay *); 1242 1243/* mta_session.c */ 1244void mta_session(struct mta_relay *, struct mta_route *); 1245void mta_session_imsg(struct mproc *, struct imsg *); 1246 1247 1248/* parse.y */ 1249int parse_config(struct smtpd *, const char *, int); 1250int cmdline_symset(char *); 1251 1252 1253/* queue.c */ 1254pid_t queue(void); 1255void queue_flow_control(void); 1256 1257 1258/* queue_backend.c */ 1259uint32_t queue_generate_msgid(void); 1260uint64_t queue_generate_evpid(uint32_t); 1261int queue_init(const char *, int); 1262int queue_close(void); 1263int queue_message_create(uint32_t *); 1264int queue_message_delete(uint32_t); 1265int queue_message_commit(uint32_t); 1266int queue_message_fd_r(uint32_t); 1267int queue_message_fd_rw(uint32_t); 1268int queue_message_corrupt(uint32_t); 1269int queue_envelope_create(struct envelope *); 1270int queue_envelope_delete(uint64_t); 1271int queue_envelope_load(uint64_t, struct envelope *); 1272int queue_envelope_update(struct envelope *); 1273int queue_envelope_walk(struct envelope *); 1274 1275 1276/* ruleset.c */ 1277struct rule *ruleset_match(const struct envelope *); 1278 1279 1280/* scheduler.c */ 1281pid_t scheduler(void); 1282 1283 1284/* scheduler_bakend.c */ 1285struct scheduler_backend *scheduler_backend_lookup(const char *); 1286void scheduler_info(struct scheduler_info *, struct envelope *); 1287time_t scheduler_compute_schedule(struct scheduler_info *); 1288 1289 1290/* pony.c */ 1291pid_t pony(void); 1292void pony_imsg(struct mproc *, struct imsg *); 1293 1294 1295/* smtp.c */ 1296void smtp_postfork(void); 1297void smtp_postprivdrop(void); 1298void smtp_imsg(struct mproc *, struct imsg *); 1299void smtp_configure(void); 1300void smtp_collect(void); 1301 1302 1303/* smtp_session.c */ 1304int smtp_session(struct listener *, int, const struct sockaddr_storage *, 1305 const char *); 1306void smtp_session_imsg(struct mproc *, struct imsg *); 1307 1308 1309/* smtpd.c */ 1310void imsg_dispatch(struct mproc *, struct imsg *); 1311void post_fork(int); 1312const char *proc_name(enum smtp_proc_type); 1313const char *proc_title(enum smtp_proc_type); 1314const char *imsg_to_str(int); 1315void log_imsg(int, int, struct imsg *); 1316int fork_proc_backend(const char *, const char *, const char *); 1317 1318 1319/* ssl_smtpd.c */ 1320void *ssl_mta_init(void *, char *, off_t); 1321void *ssl_smtp_init(void *, void *, void *); 1322 1323 1324/* stat_backend.c */ 1325struct stat_backend *stat_backend_lookup(const char *); 1326void stat_increment(const char *, size_t); 1327void stat_decrement(const char *, size_t); 1328void stat_set(const char *, const struct stat_value *); 1329struct stat_value *stat_counter(size_t); 1330struct stat_value *stat_timestamp(time_t); 1331struct stat_value *stat_timeval(struct timeval *); 1332struct stat_value *stat_timespec(struct timespec *); 1333 1334 1335/* table.c */ 1336struct table *table_find(const char *, const char *); 1337struct table *table_create(const char *, const char *, const char *, 1338 const char *); 1339int table_config(struct table *); 1340int table_open(struct table *); 1341int table_update(struct table *); 1342void table_close(struct table *); 1343int table_check_use(struct table *, uint32_t, uint32_t); 1344int table_check_type(struct table *, uint32_t); 1345int table_check_service(struct table *, uint32_t); 1346int table_lookup(struct table *, struct dict *, const char *, enum table_service, 1347 union lookup *); 1348int table_fetch(struct table *, struct dict *, enum table_service, union lookup *); 1349void table_destroy(struct table *); 1350void table_add(struct table *, const char *, const char *); 1351int table_domain_match(const char *, const char *); 1352int table_netaddr_match(const char *, const char *); 1353int table_mailaddr_match(const char *, const char *); 1354void table_open_all(void); 1355void table_dump_all(void); 1356void table_close_all(void); 1357int table_parse_lookup(enum table_service, const char *, const char *, 1358 union lookup *); 1359 1360 1361/* to.c */ 1362int email_to_mailaddr(struct mailaddr *, char *); 1363int text_to_netaddr(struct netaddr *, const char *); 1364int text_to_mailaddr(struct mailaddr *, const char *); 1365int text_to_relayhost(struct relayhost *, const char *); 1366int text_to_userinfo(struct userinfo *, const char *); 1367int text_to_credentials(struct credentials *, const char *); 1368int text_to_expandnode(struct expandnode *, const char *); 1369uint64_t text_to_evpid(const char *); 1370uint32_t text_to_msgid(const char *); 1371const char *sa_to_text(const struct sockaddr *); 1372const char *ss_to_text(const struct sockaddr_storage *); 1373const char *time_to_text(time_t); 1374const char *duration_to_text(time_t); 1375const char *relayhost_to_text(const struct relayhost *); 1376const char *rule_to_text(struct rule *); 1377const char *sockaddr_to_text(struct sockaddr *); 1378const char *mailaddr_to_text(const struct mailaddr *); 1379const char *expandnode_to_text(struct expandnode *); 1380 1381/* util.c */ 1382typedef struct arglist arglist; 1383struct arglist { 1384 char **list; 1385 uint num; 1386 uint nalloc; 1387}; 1388void addargs(arglist *, char *, ...) 1389 __attribute__((format(printf, 2, 3))); 1390int bsnprintf(char *, size_t, const char *, ...) 1391 __attribute__((format (printf, 3, 4))); 1392int mkdirs(char *, mode_t); 1393int safe_fclose(FILE *); 1394int hostname_match(const char *, const char *); 1395int valid_localpart(const char *); 1396int valid_domainpart(const char *); 1397int secure_file(int, char *, char *, uid_t, int); 1398int lowercase(char *, const char *, size_t); 1399void xlowercase(char *, const char *, size_t); 1400int uppercase(char *, const char *, size_t); 1401uint64_t generate_uid(void); 1402int availdesc(void); 1403int ckdir(const char *, mode_t, uid_t, gid_t, int); 1404int rmtree(char *, int); 1405int mvpurge(char *, char *); 1406int mktmpfile(void); 1407const char *parse_smtp_response(char *, size_t, char **, int *); 1408void *xmalloc(size_t, const char *); 1409void *xcalloc(size_t, size_t, const char *); 1410char *xstrdup(const char *, const char *); 1411void *xmemdup(const void *, size_t, const char *); 1412char *strip(char *); 1413void iobuf_xinit(struct iobuf *, size_t, size_t, const char *); 1414void iobuf_xfqueue(struct iobuf *, const char *, const char *, ...); 1415void log_envelope(const struct envelope *, const char *, const char *, 1416 const char *); 1417void session_socket_blockmode(int, enum blockmodes); 1418void session_socket_no_linger(int); 1419int session_socket_error(int); 1420int getmailname(char *, size_t); 1421int base64_encode(unsigned char const *, size_t, char *, size_t); 1422int base64_decode(char const *, unsigned char *, size_t); 1423 1424 1425/* waitq.c */ 1426int waitq_wait(void *, void (*)(void *, void *, void *), void *); 1427void waitq_run(void *, void *); 1428 1429/* runq.c */ 1430struct runq; 1431 1432int runq_init(struct runq **, void (*)(struct runq *, void *)); 1433int runq_schedule(struct runq *, time_t, void (*)(struct runq *, void *), void *); 1434int runq_delay(struct runq *, unsigned int, void (*)(struct runq *, void *), void *); 1435int runq_cancel(struct runq *, void (*)(struct runq *, void *), void *); 1436int runq_pending(struct runq *, void (*)(struct runq *, void *), void *, time_t *); 1437int runq_next(struct runq *, void (**)(struct runq *, void *), void **, time_t *); 1438