smtpd.h revision 1.604
1/* $OpenBSD: smtpd.h,v 1.604 2018/12/26 11:53:02 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 <netinet/in.h> 26#include <netdb.h> 27#include <event.h> 28 29#include "smtpd-defines.h" 30#include "smtpd-api.h" 31#include "ioev.h" 32 33#define CHECK_IMSG_DATA_SIZE(imsg, expected_sz) do { \ 34 if ((imsg)->hdr.len - IMSG_HEADER_SIZE != (expected_sz)) \ 35 fatalx("smtpd: imsg %d: data size expected %zd got %zd",\ 36 (imsg)->hdr.type, \ 37 (expected_sz), (imsg)->hdr.len - IMSG_HEADER_SIZE); \ 38} while (0) 39 40#define CONF_FILE "/etc/mail/smtpd.conf" 41#define MAILNAME_FILE "/etc/mail/mailname" 42#define CA_FILE "/etc/ssl/cert.pem" 43 44#define PROC_COUNT 7 45 46#define MAX_HOPS_COUNT 100 47#define DEFAULT_MAX_BODY_SIZE (35*1024*1024) 48 49#define EXPAND_BUFFER 1024 50 51#define SMTPD_QUEUE_EXPIRY (4 * 24 * 60 * 60) 52#define SMTPD_SOCKET "/var/run/smtpd.sock" 53#define SMTPD_NAME "OpenSMTPD" 54#define SMTPD_VERSION "6.4.0" 55#define SMTPD_SESSION_TIMEOUT 300 56#define SMTPD_BACKLOG 5 57 58#define PATH_SMTPCTL "/usr/sbin/smtpctl" 59 60#define PATH_OFFLINE "/offline" 61#define PATH_PURGE "/purge" 62#define PATH_TEMPORARY "/temporary" 63 64#define PATH_LIBEXEC "/usr/local/libexec/smtpd" 65 66 67/* 68 * RFC 5322 defines these characters as valid, some of them are 69 * potentially dangerous and need to be escaped. 70 */ 71#define MAILADDR_ALLOWED "!#$%&'*/?^`{|}~+-=_" 72#define MAILADDR_ESCAPE "!#$%&'*/?^`{|}~" 73 74 75#define F_STARTTLS 0x01 76#define F_SMTPS 0x02 77#define F_SSL (F_STARTTLS | F_SMTPS) 78#define F_AUTH 0x08 79#define F_STARTTLS_REQUIRE 0x20 80#define F_AUTH_REQUIRE 0x40 81#define F_MASK_SOURCE 0x100 82#define F_TLS_VERIFY 0x200 83#define F_EXT_DSN 0x400 84#define F_RECEIVEDAUTH 0x800 85#define F_MASQUERADE 0x1000 86#define F_FILTERED 0x2000 87 88#define RELAY_TLS_OPPORTUNISTIC 0 89#define RELAY_TLS_STARTTLS 1 90#define RELAY_TLS_SMTPS 2 91#define RELAY_TLS_NO 3 92 93#define RELAY_AUTH 0x08 94#define RELAY_LMTP 0x80 95#define RELAY_TLS_VERIFY 0x200 96 97#define MTA_EXT_DSN 0x400 98 99 100#define P_NEWALIASES 0 101#define P_MAKEMAP 1 102 103#define CERT_ERROR -1 104#define CERT_OK 0 105#define CERT_NOCA 1 106#define CERT_NOCERT 2 107#define CERT_INVALID 3 108 109struct userinfo { 110 char username[SMTPD_VUSERNAME_SIZE]; 111 char directory[PATH_MAX]; 112 uid_t uid; 113 gid_t gid; 114}; 115 116struct netaddr { 117 struct sockaddr_storage ss; 118 int bits; 119}; 120 121struct relayhost { 122 uint16_t flags; 123 int tls; 124 char hostname[HOST_NAME_MAX+1]; 125 uint16_t port; 126 char authlabel[PATH_MAX]; 127}; 128 129struct credentials { 130 char username[LINE_MAX]; 131 char password[LINE_MAX]; 132}; 133 134struct destination { 135 char name[HOST_NAME_MAX+1]; 136}; 137 138struct source { 139 struct sockaddr_storage addr; 140}; 141 142struct addrname { 143 struct sockaddr_storage addr; 144 char name[HOST_NAME_MAX+1]; 145}; 146 147union lookup { 148 struct expand *expand; 149 struct credentials creds; 150 struct netaddr netaddr; 151 struct source source; 152 struct destination domain; 153 struct userinfo userinfo; 154 struct mailaddr mailaddr; 155 struct addrname addrname; 156 struct maddrmap *maddrmap; 157 char relayhost[LINE_MAX]; 158}; 159 160/* 161 * Bump IMSG_VERSION whenever a change is made to enum imsg_type. 162 * This will ensure that we can never use a wrong version of smtpctl with smtpd. 163 */ 164#define IMSG_VERSION 16 165 166enum imsg_type { 167 IMSG_NONE, 168 169 IMSG_CTL_OK, 170 IMSG_CTL_FAIL, 171 172 IMSG_CTL_GET_DIGEST, 173 IMSG_CTL_GET_STATS, 174 IMSG_CTL_LIST_MESSAGES, 175 IMSG_CTL_LIST_ENVELOPES, 176 IMSG_CTL_MTA_SHOW_HOSTS, 177 IMSG_CTL_MTA_SHOW_RELAYS, 178 IMSG_CTL_MTA_SHOW_ROUTES, 179 IMSG_CTL_MTA_SHOW_HOSTSTATS, 180 IMSG_CTL_MTA_BLOCK, 181 IMSG_CTL_MTA_UNBLOCK, 182 IMSG_CTL_MTA_SHOW_BLOCK, 183 IMSG_CTL_PAUSE_EVP, 184 IMSG_CTL_PAUSE_MDA, 185 IMSG_CTL_PAUSE_MTA, 186 IMSG_CTL_PAUSE_SMTP, 187 IMSG_CTL_PROFILE, 188 IMSG_CTL_PROFILE_DISABLE, 189 IMSG_CTL_PROFILE_ENABLE, 190 IMSG_CTL_RESUME_EVP, 191 IMSG_CTL_RESUME_MDA, 192 IMSG_CTL_RESUME_MTA, 193 IMSG_CTL_RESUME_SMTP, 194 IMSG_CTL_RESUME_ROUTE, 195 IMSG_CTL_REMOVE, 196 IMSG_CTL_SCHEDULE, 197 IMSG_CTL_SHOW_STATUS, 198 IMSG_CTL_TRACE_DISABLE, 199 IMSG_CTL_TRACE_ENABLE, 200 IMSG_CTL_UPDATE_TABLE, 201 IMSG_CTL_VERBOSE, 202 IMSG_CTL_DISCOVER_EVPID, 203 IMSG_CTL_DISCOVER_MSGID, 204 205 IMSG_CTL_SMTP_SESSION, 206 207 IMSG_GETADDRINFO, 208 IMSG_GETADDRINFO_END, 209 IMSG_GETNAMEINFO, 210 211 IMSG_CERT_INIT, 212 IMSG_CERT_CERTIFICATE, 213 IMSG_CERT_VERIFY, 214 215 IMSG_SETUP_KEY, 216 IMSG_SETUP_PEER, 217 IMSG_SETUP_DONE, 218 219 IMSG_CONF_START, 220 IMSG_CONF_END, 221 222 IMSG_STAT_INCREMENT, 223 IMSG_STAT_DECREMENT, 224 IMSG_STAT_SET, 225 226 IMSG_LKA_AUTHENTICATE, 227 IMSG_LKA_OPEN_FORWARD, 228 IMSG_LKA_ENVELOPE_SUBMIT, 229 IMSG_LKA_ENVELOPE_COMMIT, 230 231 IMSG_QUEUE_DELIVER, 232 IMSG_QUEUE_DELIVERY_OK, 233 IMSG_QUEUE_DELIVERY_TEMPFAIL, 234 IMSG_QUEUE_DELIVERY_PERMFAIL, 235 IMSG_QUEUE_DELIVERY_LOOP, 236 IMSG_QUEUE_DISCOVER_EVPID, 237 IMSG_QUEUE_DISCOVER_MSGID, 238 IMSG_QUEUE_ENVELOPE_ACK, 239 IMSG_QUEUE_ENVELOPE_COMMIT, 240 IMSG_QUEUE_ENVELOPE_REMOVE, 241 IMSG_QUEUE_ENVELOPE_SCHEDULE, 242 IMSG_QUEUE_ENVELOPE_SUBMIT, 243 IMSG_QUEUE_HOLDQ_HOLD, 244 IMSG_QUEUE_HOLDQ_RELEASE, 245 IMSG_QUEUE_MESSAGE_COMMIT, 246 IMSG_QUEUE_MESSAGE_ROLLBACK, 247 IMSG_QUEUE_SMTP_SESSION, 248 IMSG_QUEUE_TRANSFER, 249 250 IMSG_MDA_DELIVERY_OK, 251 IMSG_MDA_DELIVERY_TEMPFAIL, 252 IMSG_MDA_DELIVERY_PERMFAIL, 253 IMSG_MDA_DELIVERY_LOOP, 254 IMSG_MDA_DELIVERY_HOLD, 255 IMSG_MDA_DONE, 256 IMSG_MDA_FORK, 257 IMSG_MDA_HOLDQ_RELEASE, 258 IMSG_MDA_LOOKUP_USERINFO, 259 IMSG_MDA_KILL, 260 IMSG_MDA_OPEN_MESSAGE, 261 262 IMSG_MTA_DELIVERY_OK, 263 IMSG_MTA_DELIVERY_TEMPFAIL, 264 IMSG_MTA_DELIVERY_PERMFAIL, 265 IMSG_MTA_DELIVERY_LOOP, 266 IMSG_MTA_DELIVERY_HOLD, 267 IMSG_MTA_DNS_HOST, 268 IMSG_MTA_DNS_HOST_END, 269 IMSG_MTA_DNS_MX, 270 IMSG_MTA_DNS_MX_PREFERENCE, 271 IMSG_MTA_HOLDQ_RELEASE, 272 IMSG_MTA_LOOKUP_CREDENTIALS, 273 IMSG_MTA_LOOKUP_SOURCE, 274 IMSG_MTA_LOOKUP_HELO, 275 IMSG_MTA_LOOKUP_SMARTHOST, 276 IMSG_MTA_OPEN_MESSAGE, 277 IMSG_MTA_SCHEDULE, 278 279 IMSG_SCHED_ENVELOPE_BOUNCE, 280 IMSG_SCHED_ENVELOPE_DELIVER, 281 IMSG_SCHED_ENVELOPE_EXPIRE, 282 IMSG_SCHED_ENVELOPE_INJECT, 283 IMSG_SCHED_ENVELOPE_REMOVE, 284 IMSG_SCHED_ENVELOPE_TRANSFER, 285 286 IMSG_SMTP_AUTHENTICATE, 287 IMSG_SMTP_MESSAGE_COMMIT, 288 IMSG_SMTP_MESSAGE_CREATE, 289 IMSG_SMTP_MESSAGE_ROLLBACK, 290 IMSG_SMTP_MESSAGE_OPEN, 291 IMSG_SMTP_CHECK_SENDER, 292 IMSG_SMTP_EXPAND_RCPT, 293 IMSG_SMTP_LOOKUP_HELO, 294 295 IMSG_SMTP_REQ_CONNECT, 296 IMSG_SMTP_REQ_HELO, 297 IMSG_SMTP_REQ_MAIL, 298 IMSG_SMTP_REQ_RCPT, 299 IMSG_SMTP_REQ_DATA, 300 IMSG_SMTP_REQ_EOM, 301 IMSG_SMTP_EVENT_RSET, 302 IMSG_SMTP_EVENT_COMMIT, 303 IMSG_SMTP_EVENT_ROLLBACK, 304 IMSG_SMTP_EVENT_DISCONNECT, 305 306 IMSG_LKA_PROCESSOR_FORK, 307 308 IMSG_REPORT_SMTP_LINK_CONNECT, 309 IMSG_REPORT_SMTP_LINK_DISCONNECT, 310 IMSG_REPORT_SMTP_LINK_IDENTIFY, 311 IMSG_REPORT_SMTP_LINK_TLS, 312 IMSG_REPORT_SMTP_TX_BEGIN, 313 IMSG_REPORT_SMTP_TX_MAIL, 314 IMSG_REPORT_SMTP_TX_RCPT, 315 IMSG_REPORT_SMTP_TX_ENVELOPE, 316 IMSG_REPORT_SMTP_TX_DATA, 317 IMSG_REPORT_SMTP_TX_COMMIT, 318 IMSG_REPORT_SMTP_TX_ROLLBACK, 319 IMSG_REPORT_SMTP_PROTOCOL_CLIENT, 320 IMSG_REPORT_SMTP_PROTOCOL_SERVER, 321 IMSG_REPORT_SMTP_FILTER_RESPONSE, 322 323 IMSG_FILTER_SMTP_BEGIN, 324 IMSG_FILTER_SMTP_END, 325 IMSG_FILTER_SMTP_PROTOCOL, 326 IMSG_FILTER_SMTP_DATA_BEGIN, 327 IMSG_FILTER_SMTP_DATA_END, 328 329 IMSG_CA_PRIVENC, 330 IMSG_CA_PRIVDEC 331}; 332 333enum smtp_proc_type { 334 PROC_PARENT = 0, 335 PROC_LKA, 336 PROC_QUEUE, 337 PROC_CONTROL, 338 PROC_SCHEDULER, 339 PROC_PONY, 340 PROC_CA, 341 PROC_PROCESSOR, 342 PROC_CLIENT, 343}; 344 345enum table_type { 346 T_NONE = 0, 347 T_DYNAMIC = 0x01, /* table with external source */ 348 T_LIST = 0x02, /* table holding a list */ 349 T_HASH = 0x04, /* table holding a hash table */ 350}; 351 352struct table { 353 char t_name[LINE_MAX]; 354 enum table_type t_type; 355 char t_config[PATH_MAX]; 356 357 struct dict t_dict; 358 359 void *t_handle; 360 struct table_backend *t_backend; 361 void *t_iter; 362}; 363 364struct table_backend { 365 const char *name; 366 const unsigned int services; 367 int (*config)(struct table *); 368 void *(*open)(struct table *); 369 int (*update)(struct table *); 370 void (*close)(void *); 371 int (*lookup)(void *, struct dict *, const char *, enum table_service, char **); 372 int (*fetch)(void *, struct dict *, enum table_service, char **); 373}; 374 375 376enum bounce_type { 377 B_FAILED, 378 B_DELAYED, 379 B_DELIVERED 380}; 381 382enum dsn_ret { 383 DSN_RETFULL = 1, 384 DSN_RETHDRS 385}; 386 387struct delivery_bounce { 388 enum bounce_type type; 389 time_t delay; 390 time_t ttl; 391 enum dsn_ret dsn_ret; 392 int mta_without_dsn; 393}; 394 395enum expand_type { 396 EXPAND_INVALID, 397 EXPAND_USERNAME, 398 EXPAND_FILENAME, 399 EXPAND_FILTER, 400 EXPAND_INCLUDE, 401 EXPAND_ADDRESS, 402 EXPAND_ERROR, 403}; 404 405enum filter_phase { 406 FILTER_CONNECT, 407 FILTER_HELO, 408 FILTER_EHLO, 409 FILTER_STARTTLS, 410 FILTER_AUTH, 411 FILTER_MAIL_FROM, 412 FILTER_RCPT_TO, 413 FILTER_DATA, 414 FILTER_DATA_LINE, 415 FILTER_RSET, 416 FILTER_QUIT, 417 FILTER_NOOP, 418 FILTER_HELP, 419 FILTER_WIZ, 420 FILTER_COMMIT, 421 FILTER_PHASES_COUNT /* must be last */ 422}; 423 424struct expandnode { 425 RB_ENTRY(expandnode) entry; 426 TAILQ_ENTRY(expandnode) tq_entry; 427 enum expand_type type; 428 int sameuser; 429 int realuser; 430 int forwarded; 431 struct rule *rule; 432 struct expandnode *parent; 433 unsigned int depth; 434 union { 435 /* 436 * user field handles both expansion user and system user 437 * so we MUST make it large enough to fit a mailaddr user 438 */ 439 char user[SMTPD_MAXLOCALPARTSIZE]; 440 char buffer[EXPAND_BUFFER]; 441 struct mailaddr mailaddr; 442 } u; 443}; 444 445struct expand { 446 RB_HEAD(expandtree, expandnode) tree; 447 TAILQ_HEAD(xnodes, expandnode) *queue; 448 size_t nb_nodes; 449 struct rule *rule; 450 struct expandnode *parent; 451}; 452 453struct maddrnode { 454 TAILQ_ENTRY(maddrnode) entries; 455 struct mailaddr mailaddr; 456}; 457 458struct maddrmap { 459 TAILQ_HEAD(xmaddr, maddrnode) queue; 460}; 461 462#define DSN_SUCCESS 0x01 463#define DSN_FAILURE 0x02 464#define DSN_DELAY 0x04 465#define DSN_NEVER 0x08 466 467#define DSN_ENVID_LEN 100 468 469#define SMTPD_ENVELOPE_VERSION 3 470struct envelope { 471 TAILQ_ENTRY(envelope) entry; 472 473 char dispatcher[HOST_NAME_MAX+1]; 474 475 char tag[SMTPD_TAG_SIZE]; 476 477 uint32_t version; 478 uint64_t id; 479 enum envelope_flags flags; 480 481 char smtpname[HOST_NAME_MAX+1]; 482 char helo[HOST_NAME_MAX+1]; 483 char hostname[HOST_NAME_MAX+1]; 484 char errorline[LINE_MAX]; 485 struct sockaddr_storage ss; 486 487 struct mailaddr sender; 488 struct mailaddr rcpt; 489 struct mailaddr dest; 490 491 char mda_user[SMTPD_VUSERNAME_SIZE]; 492 char mda_exec[LINE_MAX]; 493 494 enum delivery_type type; 495 union { 496 struct delivery_bounce bounce; 497 } agent; 498 499 uint16_t retry; 500 time_t creation; 501 time_t ttl; 502 time_t lasttry; 503 time_t nexttry; 504 time_t lastbounce; 505 506 struct mailaddr dsn_orcpt; 507 char dsn_envid[DSN_ENVID_LEN+1]; 508 uint8_t dsn_notify; 509 enum dsn_ret dsn_ret; 510 511 uint8_t esc_class; 512 uint8_t esc_code; 513}; 514 515struct listener { 516 uint16_t flags; 517 int fd; 518 struct sockaddr_storage ss; 519 in_port_t port; 520 struct timeval timeout; 521 struct event ev; 522 char filter_name[PATH_MAX]; 523 char pki_name[PATH_MAX]; 524 char ca_name[PATH_MAX]; 525 char tag[SMTPD_TAG_SIZE]; 526 char authtable[LINE_MAX]; 527 char hostname[HOST_NAME_MAX+1]; 528 char hostnametable[PATH_MAX]; 529 char sendertable[PATH_MAX]; 530 531 TAILQ_ENTRY(listener) entry; 532 533 int local; /* there must be a better way */ 534}; 535 536struct smtpd { 537 char sc_conffile[PATH_MAX]; 538 size_t sc_maxsize; 539 540#define SMTPD_OPT_VERBOSE 0x00000001 541#define SMTPD_OPT_NOACTION 0x00000002 542 uint32_t sc_opts; 543 544#define SMTPD_EXITING 0x00000001 /* unused */ 545#define SMTPD_MDA_PAUSED 0x00000002 546#define SMTPD_MTA_PAUSED 0x00000004 547#define SMTPD_SMTP_PAUSED 0x00000008 548#define SMTPD_MDA_BUSY 0x00000010 549#define SMTPD_MTA_BUSY 0x00000020 550#define SMTPD_BOUNCE_BUSY 0x00000040 551#define SMTPD_SMTP_DISABLED 0x00000080 552 uint32_t sc_flags; 553 554#define QUEUE_COMPRESSION 0x00000001 555#define QUEUE_ENCRYPTION 0x00000002 556#define QUEUE_EVPCACHE 0x00000004 557 uint32_t sc_queue_flags; 558 char *sc_queue_key; 559 size_t sc_queue_evpcache_size; 560 561 size_t sc_session_max_rcpt; 562 size_t sc_session_max_mails; 563 564 struct dict *sc_mda_wrappers; 565 size_t sc_mda_max_session; 566 size_t sc_mda_max_user_session; 567 size_t sc_mda_task_hiwat; 568 size_t sc_mda_task_lowat; 569 size_t sc_mda_task_release; 570 571 size_t sc_mta_max_deferred; 572 573 size_t sc_scheduler_max_inflight; 574 size_t sc_scheduler_max_evp_batch_size; 575 size_t sc_scheduler_max_msg_batch_size; 576 size_t sc_scheduler_max_schedule; 577 578 struct dict *sc_processors_dict; 579 580 int sc_ttl; 581#define MAX_BOUNCE_WARN 4 582 time_t sc_bounce_warn[MAX_BOUNCE_WARN]; 583 char sc_hostname[HOST_NAME_MAX+1]; 584 struct stat_backend *sc_stat; 585 struct compress_backend *sc_comp; 586 587 time_t sc_uptime; 588 589 /* This is a listener for a local socket used by smtp_enqueue(). */ 590 struct listener *sc_sock_listener; 591 592 TAILQ_HEAD(listenerlist, listener) *sc_listeners; 593 594 TAILQ_HEAD(rulelist, rule) *sc_rules; 595 596 597 struct dict *sc_filters_dict; 598 struct dict *sc_dispatchers; 599 struct dispatcher *sc_dispatcher_bounce; 600 601 struct dict *sc_ca_dict; 602 struct dict *sc_pki_dict; 603 struct dict *sc_ssl_dict; 604 605 struct dict *sc_tables_dict; /* keyed lookup */ 606 607 struct dict *sc_limits_dict; 608 609 char *sc_tls_ciphers; 610 611 char *sc_subaddressing_delim; 612}; 613 614#define TRACE_DEBUG 0x0001 615#define TRACE_IMSG 0x0002 616#define TRACE_IO 0x0004 617#define TRACE_SMTP 0x0008 618#define TRACE_FILTERS 0x0010 619#define TRACE_MTA 0x0020 620#define TRACE_BOUNCE 0x0040 621#define TRACE_SCHEDULER 0x0080 622#define TRACE_LOOKUP 0x0100 623#define TRACE_STAT 0x0200 624#define TRACE_RULES 0x0400 625#define TRACE_MPROC 0x0800 626#define TRACE_EXPAND 0x1000 627#define TRACE_TABLES 0x2000 628#define TRACE_QUEUE 0x4000 629 630#define PROFILE_TOSTAT 0x0001 631#define PROFILE_IMSG 0x0002 632#define PROFILE_QUEUE 0x0004 633 634struct forward_req { 635 uint64_t id; 636 uint8_t status; 637 638 char user[SMTPD_VUSERNAME_SIZE]; 639 uid_t uid; 640 gid_t gid; 641 char directory[PATH_MAX]; 642}; 643 644struct deliver { 645 char dispatcher[EXPAND_BUFFER]; 646 647 struct mailaddr sender; 648 struct mailaddr rcpt; 649 struct mailaddr dest; 650 651 char mda_exec[LINE_MAX]; 652 653 struct userinfo userinfo; 654}; 655 656struct mta_host { 657 SPLAY_ENTRY(mta_host) entry; 658 struct sockaddr *sa; 659 char *ptrname; 660 int refcount; 661 size_t nconn; 662 time_t lastconn; 663 time_t lastptrquery; 664 665#define HOST_IGNORE 0x01 666 int flags; 667}; 668 669struct mta_mx { 670 TAILQ_ENTRY(mta_mx) entry; 671 struct mta_host *host; 672 int preference; 673}; 674 675struct mta_domain { 676 SPLAY_ENTRY(mta_domain) entry; 677 char *name; 678 int as_host; 679 TAILQ_HEAD(, mta_mx) mxs; 680 int mxstatus; 681 int refcount; 682 size_t nconn; 683 time_t lastconn; 684 time_t lastmxquery; 685}; 686 687struct mta_source { 688 SPLAY_ENTRY(mta_source) entry; 689 struct sockaddr *sa; 690 int refcount; 691 size_t nconn; 692 time_t lastconn; 693}; 694 695struct mta_connector { 696 struct mta_source *source; 697 struct mta_relay *relay; 698 699#define CONNECTOR_ERROR_FAMILY 0x0001 700#define CONNECTOR_ERROR_SOURCE 0x0002 701#define CONNECTOR_ERROR_MX 0x0004 702#define CONNECTOR_ERROR_ROUTE_NET 0x0008 703#define CONNECTOR_ERROR_ROUTE_SMTP 0x0010 704#define CONNECTOR_ERROR_ROUTE 0x0018 705#define CONNECTOR_ERROR_BLOCKED 0x0020 706#define CONNECTOR_ERROR 0x00ff 707 708#define CONNECTOR_LIMIT_HOST 0x0100 709#define CONNECTOR_LIMIT_ROUTE 0x0200 710#define CONNECTOR_LIMIT_SOURCE 0x0400 711#define CONNECTOR_LIMIT_RELAY 0x0800 712#define CONNECTOR_LIMIT_CONN 0x1000 713#define CONNECTOR_LIMIT_DOMAIN 0x2000 714#define CONNECTOR_LIMIT 0xff00 715 716#define CONNECTOR_NEW 0x10000 717#define CONNECTOR_WAIT 0x20000 718 int flags; 719 720 int refcount; 721 size_t nconn; 722 time_t lastconn; 723}; 724 725struct mta_route { 726 SPLAY_ENTRY(mta_route) entry; 727 uint64_t id; 728 struct mta_source *src; 729 struct mta_host *dst; 730#define ROUTE_NEW 0x01 731#define ROUTE_RUNQ 0x02 732#define ROUTE_KEEPALIVE 0x04 733#define ROUTE_DISABLED 0xf0 734#define ROUTE_DISABLED_NET 0x10 735#define ROUTE_DISABLED_SMTP 0x20 736 int flags; 737 int nerror; 738 int penalty; 739 int refcount; 740 size_t nconn; 741 time_t lastconn; 742 time_t lastdisc; 743 time_t lastpenalty; 744}; 745 746struct mta_limits { 747 size_t maxconn_per_host; 748 size_t maxconn_per_route; 749 size_t maxconn_per_source; 750 size_t maxconn_per_connector; 751 size_t maxconn_per_relay; 752 size_t maxconn_per_domain; 753 754 time_t conndelay_host; 755 time_t conndelay_route; 756 time_t conndelay_source; 757 time_t conndelay_connector; 758 time_t conndelay_relay; 759 time_t conndelay_domain; 760 761 time_t discdelay_route; 762 763 size_t max_mail_per_session; 764 time_t sessdelay_transaction; 765 time_t sessdelay_keepalive; 766 767 size_t max_failures_per_session; 768 769 int family; 770 771 int task_hiwat; 772 int task_lowat; 773 int task_release; 774}; 775 776struct mta_relay { 777 SPLAY_ENTRY(mta_relay) entry; 778 uint64_t id; 779 780 struct dispatcher *dispatcher; 781 struct mta_domain *domain; 782 struct mta_limits *limits; 783 int tls; 784 int flags; 785 char *backupname; 786 int backuppref; 787 char *sourcetable; 788 uint16_t port; 789 char *pki_name; 790 char *ca_name; 791 char *authtable; 792 char *authlabel; 793 char *helotable; 794 char *heloname; 795 char *secret; 796 797 int state; 798 size_t ntask; 799 TAILQ_HEAD(, mta_task) tasks; 800 801 struct tree connectors; 802 size_t sourceloop; 803 time_t lastsource; 804 time_t nextsource; 805 806 int fail; 807 char *failstr; 808 809#define RELAY_WAIT_MX 0x01 810#define RELAY_WAIT_PREFERENCE 0x02 811#define RELAY_WAIT_SECRET 0x04 812#define RELAY_WAIT_LIMITS 0x08 813#define RELAY_WAIT_SOURCE 0x10 814#define RELAY_WAIT_CONNECTOR 0x20 815#define RELAY_WAIT_SMARTHOST 0x40 816#define RELAY_WAITMASK 0x7f 817 int status; 818 819 int refcount; 820 size_t nconn; 821 size_t nconn_ready; 822 time_t lastconn; 823}; 824 825struct mta_envelope { 826 TAILQ_ENTRY(mta_envelope) entry; 827 uint64_t id; 828 uint64_t session; 829 time_t creation; 830 char *smtpname; 831 char *dest; 832 char *rcpt; 833 struct mta_task *task; 834 int delivery; 835 836 int ext; 837 char *dsn_orcpt; 838 char dsn_envid[DSN_ENVID_LEN+1]; 839 uint8_t dsn_notify; 840 enum dsn_ret dsn_ret; 841 842 char status[LINE_MAX]; 843}; 844 845struct mta_task { 846 TAILQ_ENTRY(mta_task) entry; 847 struct mta_relay *relay; 848 uint32_t msgid; 849 TAILQ_HEAD(, mta_envelope) envelopes; 850 char *sender; 851}; 852 853struct passwd; 854 855struct queue_backend { 856 int (*init)(struct passwd *, int, const char *); 857}; 858 859struct compress_backend { 860 size_t (*compress_chunk)(void *, size_t, void *, size_t); 861 size_t (*uncompress_chunk)(void *, size_t, void *, size_t); 862 int (*compress_file)(FILE *, FILE *); 863 int (*uncompress_file)(FILE *, FILE *); 864}; 865 866/* auth structures */ 867enum auth_type { 868 AUTH_BSD, 869 AUTH_PWD, 870}; 871 872struct auth_backend { 873 int (*authenticate)(char *, char *); 874}; 875 876struct scheduler_backend { 877 int (*init)(const char *); 878 879 int (*insert)(struct scheduler_info *); 880 size_t (*commit)(uint32_t); 881 size_t (*rollback)(uint32_t); 882 883 int (*update)(struct scheduler_info *); 884 int (*delete)(uint64_t); 885 int (*hold)(uint64_t, uint64_t); 886 int (*release)(int, uint64_t, int); 887 888 int (*batch)(int, int*, size_t*, uint64_t*, int*); 889 890 size_t (*messages)(uint32_t, uint32_t *, size_t); 891 size_t (*envelopes)(uint64_t, struct evpstate *, size_t); 892 int (*schedule)(uint64_t); 893 int (*remove)(uint64_t); 894 int (*suspend)(uint64_t); 895 int (*resume)(uint64_t); 896 int (*query)(uint64_t); 897}; 898 899enum stat_type { 900 STAT_COUNTER, 901 STAT_TIMESTAMP, 902 STAT_TIMEVAL, 903 STAT_TIMESPEC, 904}; 905 906struct stat_value { 907 enum stat_type type; 908 union stat_v { 909 size_t counter; 910 time_t timestamp; 911 struct timeval tv; 912 struct timespec ts; 913 } u; 914}; 915 916#define STAT_KEY_SIZE 1024 917struct stat_kv { 918 void *iter; 919 char key[STAT_KEY_SIZE]; 920 struct stat_value val; 921}; 922 923struct stat_backend { 924 void (*init)(void); 925 void (*close)(void); 926 void (*increment)(const char *, size_t); 927 void (*decrement)(const char *, size_t); 928 void (*set)(const char *, const struct stat_value *); 929 int (*iter)(void **, char **, struct stat_value *); 930}; 931 932struct stat_digest { 933 time_t startup; 934 time_t timestamp; 935 936 size_t clt_connect; 937 size_t clt_disconnect; 938 939 size_t evp_enqueued; 940 size_t evp_dequeued; 941 942 size_t evp_expired; 943 size_t evp_removed; 944 size_t evp_bounce; 945 946 size_t dlv_ok; 947 size_t dlv_permfail; 948 size_t dlv_tempfail; 949 size_t dlv_loop; 950}; 951 952 953struct mproc { 954 pid_t pid; 955 char *name; 956 int proc; 957 void (*handler)(struct mproc *, struct imsg *); 958 struct imsgbuf imsgbuf; 959 960 char *m_buf; 961 size_t m_alloc; 962 size_t m_pos; 963 uint32_t m_type; 964 uint32_t m_peerid; 965 pid_t m_pid; 966 int m_fd; 967 968 int enable; 969 short events; 970 struct event ev; 971 void *data; 972}; 973 974struct msg { 975 const uint8_t *pos; 976 const uint8_t *end; 977}; 978 979extern enum smtp_proc_type smtpd_process; 980 981extern int tracing; 982extern int foreground_log; 983extern int profiling; 984 985extern struct mproc *p_control; 986extern struct mproc *p_parent; 987extern struct mproc *p_lka; 988extern struct mproc *p_queue; 989extern struct mproc *p_scheduler; 990extern struct mproc *p_pony; 991extern struct mproc *p_ca; 992 993extern struct smtpd *env; 994extern void (*imsg_callback)(struct mproc *, struct imsg *); 995 996struct imsgproc { 997 pid_t pid; 998 struct event ev; 999 struct imsgbuf *ibuf; 1000 char *path; 1001 char *name; 1002 void (*cb)(struct imsg *, void *); 1003 void *cb_arg; 1004}; 1005 1006/* inter-process structures */ 1007 1008struct bounce_req_msg { 1009 uint64_t evpid; 1010 time_t timestamp; 1011 struct delivery_bounce bounce; 1012}; 1013 1014enum dns_error { 1015 DNS_OK = 0, 1016 DNS_RETRY, 1017 DNS_EINVAL, 1018 DNS_ENONAME, 1019 DNS_ENOTFOUND, 1020}; 1021 1022enum lka_resp_status { 1023 LKA_OK, 1024 LKA_TEMPFAIL, 1025 LKA_PERMFAIL 1026}; 1027 1028struct processor { 1029 const char *command; 1030 const char *user; 1031 const char *group; 1032 const char *chroot; 1033}; 1034 1035enum filter_type { 1036 FILTER_TYPE_BUILTIN, 1037 FILTER_TYPE_PROC, 1038 FILTER_TYPE_CHAIN, 1039}; 1040 1041struct filter_config { 1042 char *name; 1043 enum filter_type filter_type; 1044 enum filter_phase phase; 1045 char *reject; 1046 char *disconnect; 1047 char *rewrite; 1048 char *proc; 1049 1050 const char **chain; 1051 size_t chain_size; 1052 struct dict chain_procs; 1053 1054 int8_t not_fcrdns; 1055 int8_t fcrdns; 1056 1057 int8_t not_rdns; 1058 int8_t rdns; 1059 1060 int8_t not_rdns_table; 1061 struct table *rdns_table; 1062 1063 int8_t not_rdns_regex; 1064 struct table *rdns_regex; 1065 1066 int8_t not_src_table; 1067 struct table *src_table; 1068 1069 int8_t not_src_regex; 1070 struct table *src_regex; 1071 1072 int8_t not_helo_table; 1073 struct table *helo_table; 1074 1075 int8_t not_helo_regex; 1076 struct table *helo_regex; 1077 1078 int8_t not_mail_from_table; 1079 struct table *mail_from_table; 1080 1081 int8_t not_mail_from_regex; 1082 struct table *mail_from_regex; 1083 1084 int8_t not_rcpt_to_table; 1085 struct table *rcpt_to_table; 1086 1087 int8_t not_rcpt_to_regex; 1088 struct table *rcpt_to_regex; 1089 1090}; 1091 1092enum filter_status { 1093 FILTER_PROCEED, 1094 FILTER_REWRITE, 1095 FILTER_REJECT, 1096 FILTER_DISCONNECT, 1097}; 1098 1099enum ca_resp_status { 1100 CA_OK, 1101 CA_FAIL 1102}; 1103 1104enum mda_resp_status { 1105 MDA_OK, 1106 MDA_TEMPFAIL, 1107 MDA_PERMFAIL 1108}; 1109 1110struct msg_walkinfo { 1111 struct event ev; 1112 uint32_t msgid; 1113 uint32_t peerid; 1114 size_t n_evp; 1115 void *data; 1116 int done; 1117}; 1118 1119 1120enum dispatcher_type { 1121 DISPATCHER_LOCAL, 1122 DISPATCHER_REMOTE, 1123 DISPATCHER_BOUNCE, 1124}; 1125 1126struct dispatcher_local { 1127 uint8_t requires_root; /* only for MBOX */ 1128 1129 uint8_t expand_only; 1130 uint8_t forward_only; 1131 1132 char *mda_wrapper; 1133 char *command; 1134 1135 char *table_alias; 1136 char *table_virtual; 1137 char *table_userbase; 1138 1139 char *user; 1140}; 1141 1142struct dispatcher_remote { 1143 char *helo; 1144 char *helo_source; 1145 1146 char *source; 1147 1148 char *ca; 1149 char *pki; 1150 1151 char *mail_from; 1152 1153 char *smarthost; 1154 char *auth; 1155 int tls_required; 1156 int tls_noverify; 1157 1158 int backup; 1159 char *backupmx; 1160}; 1161 1162struct dispatcher_bounce { 1163}; 1164 1165struct dispatcher { 1166 enum dispatcher_type type; 1167 union dispatcher_agent { 1168 struct dispatcher_local local; 1169 struct dispatcher_remote remote; 1170 struct dispatcher_bounce bounce; 1171 } u; 1172 1173 time_t ttl; 1174}; 1175 1176struct rule { 1177 TAILQ_ENTRY(rule) r_entry; 1178 1179 uint8_t reject; 1180 1181 int8_t flag_tag; 1182 int8_t flag_from; 1183 int8_t flag_for; 1184 int8_t flag_from_rdns; 1185 int8_t flag_from_socket; 1186 1187 int8_t flag_tag_regex; 1188 int8_t flag_from_regex; 1189 int8_t flag_for_regex; 1190 1191 int8_t flag_smtp_helo; 1192 int8_t flag_smtp_starttls; 1193 int8_t flag_smtp_auth; 1194 int8_t flag_smtp_mail_from; 1195 int8_t flag_smtp_rcpt_to; 1196 1197 int8_t flag_smtp_helo_regex; 1198 int8_t flag_smtp_starttls_regex; 1199 int8_t flag_smtp_auth_regex; 1200 int8_t flag_smtp_mail_from_regex; 1201 int8_t flag_smtp_rcpt_to_regex; 1202 1203 1204 char *table_tag; 1205 char *table_from; 1206 char *table_for; 1207 1208 char *table_smtp_helo; 1209 char *table_smtp_auth; 1210 char *table_smtp_mail_from; 1211 char *table_smtp_rcpt_to; 1212 1213 char *dispatcher; 1214}; 1215 1216 1217/* aliases.c */ 1218int aliases_get(struct expand *, const char *); 1219int aliases_virtual_get(struct expand *, const struct mailaddr *); 1220int alias_parse(struct expandnode *, const char *); 1221 1222 1223/* auth.c */ 1224struct auth_backend *auth_backend_lookup(enum auth_type); 1225 1226 1227/* bounce.c */ 1228void bounce_add(uint64_t); 1229void bounce_fd(int); 1230 1231 1232/* ca.c */ 1233int ca(void); 1234int ca_X509_verify(void *, void *, const char *, const char *, const char **); 1235void ca_imsg(struct mproc *, struct imsg *); 1236void ca_init(void); 1237void ca_engine_init(void); 1238 1239 1240/* cert.c */ 1241int cert_init(const char *, int, 1242 void (*)(void *, int, const char *, const void *, size_t), void *); 1243int cert_verify(const void *, const char *, int, void (*)(void *, int), void *); 1244void cert_dispatch_request(struct mproc *, struct imsg *); 1245void cert_dispatch_result(struct mproc *, struct imsg *); 1246 1247 1248/* compress_backend.c */ 1249struct compress_backend *compress_backend_lookup(const char *); 1250size_t compress_chunk(void *, size_t, void *, size_t); 1251size_t uncompress_chunk(void *, size_t, void *, size_t); 1252int compress_file(FILE *, FILE *); 1253int uncompress_file(FILE *, FILE *); 1254 1255/* config.c */ 1256#define PURGE_LISTENERS 0x01 1257#define PURGE_TABLES 0x02 1258#define PURGE_RULES 0x04 1259#define PURGE_PKI 0x08 1260#define PURGE_PKI_KEYS 0x10 1261#define PURGE_DISPATCHERS 0x20 1262#define PURGE_EVERYTHING 0xff 1263struct smtpd *config_default(void); 1264void purge_config(uint8_t); 1265void config_process(enum smtp_proc_type); 1266void config_peer(enum smtp_proc_type); 1267 1268 1269/* control.c */ 1270int control(void); 1271int control_create_socket(void); 1272 1273 1274/* crypto.c */ 1275int crypto_setup(const char *, size_t); 1276int crypto_encrypt_file(FILE *, FILE *); 1277int crypto_decrypt_file(FILE *, FILE *); 1278size_t crypto_encrypt_buffer(const char *, size_t, char *, size_t); 1279size_t crypto_decrypt_buffer(const char *, size_t, char *, size_t); 1280 1281 1282/* dns.c */ 1283void dns_imsg(struct mproc *, struct imsg *); 1284 1285 1286/* enqueue.c */ 1287int enqueue(int, char **, FILE *); 1288 1289 1290/* envelope.c */ 1291void envelope_set_errormsg(struct envelope *, char *, ...); 1292void envelope_set_esc_class(struct envelope *, enum enhanced_status_class); 1293void envelope_set_esc_code(struct envelope *, enum enhanced_status_code); 1294int envelope_load_buffer(struct envelope *, const char *, size_t); 1295int envelope_dump_buffer(const struct envelope *, char *, size_t); 1296 1297 1298/* expand.c */ 1299int expand_cmp(struct expandnode *, struct expandnode *); 1300void expand_insert(struct expand *, struct expandnode *); 1301struct expandnode *expand_lookup(struct expand *, struct expandnode *); 1302void expand_clear(struct expand *); 1303void expand_free(struct expand *); 1304int expand_line(struct expand *, const char *, int); 1305int expand_to_text(struct expand *, char *, size_t); 1306RB_PROTOTYPE(expandtree, expandnode, nodes, expand_cmp); 1307 1308 1309/* forward.c */ 1310int forwards_get(int, struct expand *); 1311 1312 1313/* imsgproc.c */ 1314void imsgproc_init(void); 1315struct imsgproc *imsgproc_fork(const char *, const char *, 1316 void (*)(struct imsg *, void *), void *); 1317void imsgproc_set_read(struct imsgproc *); 1318void imsgproc_set_write(struct imsgproc *); 1319void imsgproc_set_read_write(struct imsgproc *); 1320void imsgproc_reset_callback(struct imsgproc *, void (*)(struct imsg *, void *), void *); 1321 1322 1323/* limit.c */ 1324void limit_mta_set_defaults(struct mta_limits *); 1325int limit_mta_set(struct mta_limits *, const char*, int64_t); 1326 1327 1328/* lka.c */ 1329int lka(void); 1330 1331 1332/* lka_proc.c */ 1333int lka_proc_ready(void); 1334void lka_proc_forked(const char *, int); 1335struct io *lka_proc_get_io(const char *); 1336 1337 1338/* lka_report.c */ 1339void lka_report_init(void); 1340void lka_report_register_hook(const char *, const char *); 1341void lka_report_smtp_link_connect(const char *, struct timeval *, uint64_t, const char *, int, 1342 const struct sockaddr_storage *, const struct sockaddr_storage *); 1343void lka_report_smtp_link_disconnect(const char *, struct timeval *, uint64_t); 1344void lka_report_smtp_link_identify(const char *, struct timeval *, uint64_t, const char *); 1345void lka_report_smtp_link_tls(const char *, struct timeval *, uint64_t, const char *); 1346void lka_report_smtp_tx_begin(const char *, struct timeval *, uint64_t, uint32_t); 1347void lka_report_smtp_tx_mail(const char *, struct timeval *, uint64_t, uint32_t, const char *, int); 1348void lka_report_smtp_tx_rcpt(const char *, struct timeval *, uint64_t, uint32_t, const char *, int); 1349void lka_report_smtp_tx_envelope(const char *, struct timeval *, uint64_t, uint32_t, uint64_t); 1350void lka_report_smtp_tx_commit(const char *, struct timeval *, uint64_t, uint32_t, size_t); 1351void lka_report_smtp_tx_data(const char *, struct timeval *, uint64_t, uint32_t, int); 1352void lka_report_smtp_tx_rollback(const char *, struct timeval *, uint64_t, uint32_t); 1353void lka_report_smtp_protocol_client(const char *, struct timeval *, uint64_t, const char *); 1354void lka_report_smtp_protocol_server(const char *, struct timeval *, uint64_t, const char *); 1355void lka_report_smtp_filter_response(const char *, struct timeval *, uint64_t, 1356 int, int, const char *); 1357 1358 1359/* lka_filter.c */ 1360void lka_filter_init(void); 1361void lka_filter_register_hook(const char *, const char *); 1362void lka_filter_ready(void); 1363int lka_filter_proc_in_session(uint64_t, const char *); 1364void lka_filter_begin(uint64_t, const char *, const struct sockaddr_storage *, const struct sockaddr_storage *, const char *, int); 1365void lka_filter_end(uint64_t); 1366void lka_filter_protocol(uint64_t, enum filter_phase, const char *); 1367void lka_filter_data_begin(uint64_t); 1368void lka_filter_data_end(uint64_t); 1369int lka_filter_response(uint64_t, const char *, const char *); 1370 1371 1372/* lka_session.c */ 1373void lka_session(uint64_t, struct envelope *); 1374void lka_session_forward_reply(struct forward_req *, int); 1375 1376 1377/* log.c */ 1378void vlog(int, const char *, va_list); 1379void logit(int, const char *, ...) __attribute__((format (printf, 2, 3))); 1380 1381 1382/* mda.c */ 1383void mda_postfork(void); 1384void mda_postprivdrop(void); 1385void mda_imsg(struct mproc *, struct imsg *); 1386 1387 1388/* mda_unpriv.c */ 1389void mda_unpriv(struct dispatcher *, struct deliver *, const char *, const char *); 1390 1391 1392/* mda_variables.c */ 1393ssize_t mda_expand_format(char *, size_t, const struct deliver *, 1394 const struct userinfo *, const char *); 1395 1396 1397/* makemap.c */ 1398int makemap(int, int, char **); 1399 1400 1401/* mailaddr.c */ 1402int mailaddr_line(struct maddrmap *, const char *); 1403void maddrmap_init(struct maddrmap *); 1404void maddrmap_insert(struct maddrmap *, struct maddrnode *); 1405void maddrmap_free(struct maddrmap *); 1406 1407 1408/* mproc.c */ 1409int mproc_fork(struct mproc *, const char*, char **); 1410void mproc_init(struct mproc *, int); 1411void mproc_clear(struct mproc *); 1412void mproc_enable(struct mproc *); 1413void mproc_disable(struct mproc *); 1414void mproc_event_add(struct mproc *); 1415void m_compose(struct mproc *, uint32_t, uint32_t, pid_t, int, void *, size_t); 1416void m_composev(struct mproc *, uint32_t, uint32_t, pid_t, int, 1417 const struct iovec *, int); 1418void m_forward(struct mproc *, struct imsg *); 1419void m_create(struct mproc *, uint32_t, uint32_t, pid_t, int); 1420void m_add(struct mproc *, const void *, size_t); 1421void m_add_int(struct mproc *, int); 1422void m_add_u32(struct mproc *, uint32_t); 1423void m_add_size(struct mproc *, size_t); 1424void m_add_time(struct mproc *, time_t); 1425void m_add_timeval(struct mproc *, struct timeval *tv); 1426void m_add_string(struct mproc *, const char *); 1427void m_add_data(struct mproc *, const void *, size_t); 1428void m_add_evpid(struct mproc *, uint64_t); 1429void m_add_msgid(struct mproc *, uint32_t); 1430void m_add_id(struct mproc *, uint64_t); 1431void m_add_sockaddr(struct mproc *, const struct sockaddr *); 1432void m_add_mailaddr(struct mproc *, const struct mailaddr *); 1433void m_add_envelope(struct mproc *, const struct envelope *); 1434void m_add_params(struct mproc *, struct dict *); 1435void m_close(struct mproc *); 1436void m_flush(struct mproc *); 1437 1438void m_msg(struct msg *, struct imsg *); 1439int m_is_eom(struct msg *); 1440void m_end(struct msg *); 1441void m_get_int(struct msg *, int *); 1442void m_get_size(struct msg *, size_t *); 1443void m_get_u32(struct msg *, uint32_t *); 1444void m_get_time(struct msg *, time_t *); 1445void m_get_timeval(struct msg *, struct timeval *); 1446void m_get_string(struct msg *, const char **); 1447void m_get_data(struct msg *, const void **, size_t *); 1448void m_get_evpid(struct msg *, uint64_t *); 1449void m_get_msgid(struct msg *, uint32_t *); 1450void m_get_id(struct msg *, uint64_t *); 1451void m_get_sockaddr(struct msg *, struct sockaddr *); 1452void m_get_mailaddr(struct msg *, struct mailaddr *); 1453void m_get_envelope(struct msg *, struct envelope *); 1454void m_get_params(struct msg *, struct dict *); 1455void m_clear_params(struct dict *); 1456 1457 1458/* mta.c */ 1459void mta_postfork(void); 1460void mta_postprivdrop(void); 1461void mta_imsg(struct mproc *, struct imsg *); 1462void mta_route_ok(struct mta_relay *, struct mta_route *); 1463void mta_route_error(struct mta_relay *, struct mta_route *); 1464void mta_route_down(struct mta_relay *, struct mta_route *); 1465void mta_route_collect(struct mta_relay *, struct mta_route *); 1466void mta_source_error(struct mta_relay *, struct mta_route *, const char *); 1467void mta_delivery_log(struct mta_envelope *, const char *, const char *, int, const char *); 1468void mta_delivery_notify(struct mta_envelope *); 1469struct mta_task *mta_route_next_task(struct mta_relay *, struct mta_route *); 1470const char *mta_host_to_text(struct mta_host *); 1471const char *mta_relay_to_text(struct mta_relay *); 1472 1473 1474/* mta_session.c */ 1475void mta_session(struct mta_relay *, struct mta_route *); 1476void mta_session_imsg(struct mproc *, struct imsg *); 1477 1478 1479/* parse.y */ 1480int parse_config(struct smtpd *, const char *, int); 1481int cmdline_symset(char *); 1482 1483 1484/* queue.c */ 1485int queue(void); 1486 1487 1488/* queue_backend.c */ 1489uint32_t queue_generate_msgid(void); 1490uint64_t queue_generate_evpid(uint32_t); 1491int queue_init(const char *, int); 1492int queue_close(void); 1493int queue_message_create(uint32_t *); 1494int queue_message_delete(uint32_t); 1495int queue_message_commit(uint32_t); 1496int queue_message_fd_r(uint32_t); 1497int queue_message_fd_rw(uint32_t); 1498int queue_envelope_create(struct envelope *); 1499int queue_envelope_delete(uint64_t); 1500int queue_envelope_load(uint64_t, struct envelope *); 1501int queue_envelope_update(struct envelope *); 1502int queue_envelope_walk(struct envelope *); 1503int queue_message_walk(struct envelope *, uint32_t, int *, void **); 1504 1505 1506/* report_smtp.c */ 1507void report_smtp_link_connect(const char *, uint64_t, const char *, int, 1508 const struct sockaddr_storage *, const struct sockaddr_storage *); 1509void report_smtp_link_disconnect(const char *, uint64_t); 1510void report_smtp_link_identify(const char *, uint64_t, const char *); 1511void report_smtp_link_tls(const char *, uint64_t, const char *); 1512void report_smtp_tx_begin(const char *, uint64_t, uint32_t); 1513void report_smtp_tx_mail(const char *, uint64_t, uint32_t, const char *, int); 1514void report_smtp_tx_rcpt(const char *, uint64_t, uint32_t, const char *, int); 1515void report_smtp_tx_envelope(const char *, uint64_t, uint32_t, uint64_t); 1516void report_smtp_tx_data(const char *, uint64_t, uint32_t, int); 1517void report_smtp_tx_commit(const char *, uint64_t, uint32_t, size_t); 1518void report_smtp_tx_rollback(const char *, uint64_t, uint32_t); 1519void report_smtp_protocol_client(const char *, uint64_t, const char *); 1520void report_smtp_protocol_server(const char *, uint64_t, const char *); 1521void report_smtp_filter_response(const char *, uint64_t, int, int, const char *); 1522 1523 1524/* ruleset.c */ 1525struct rule *ruleset_match(const struct envelope *); 1526 1527 1528/* scheduler.c */ 1529int scheduler(void); 1530 1531 1532/* scheduler_bakend.c */ 1533struct scheduler_backend *scheduler_backend_lookup(const char *); 1534void scheduler_info(struct scheduler_info *, struct envelope *); 1535 1536 1537/* pony.c */ 1538int pony(void); 1539void pony_imsg(struct mproc *, struct imsg *); 1540 1541 1542/* resolver.c */ 1543void resolver_getaddrinfo(const char *, const char *, const struct addrinfo *, 1544 void(*)(void *, int, struct addrinfo*), void *); 1545void resolver_getnameinfo(const struct sockaddr *, int, 1546 void(*)(void *, int, const char *, const char *), void *); 1547void resolver_dispatch_request(struct mproc *, struct imsg *); 1548void resolver_dispatch_result(struct mproc *, struct imsg *); 1549 1550 1551/* smtp.c */ 1552void smtp_postfork(void); 1553void smtp_postprivdrop(void); 1554void smtp_imsg(struct mproc *, struct imsg *); 1555void smtp_configure(void); 1556void smtp_collect(void); 1557 1558 1559/* smtp_session.c */ 1560int smtp_session(struct listener *, int, const struct sockaddr_storage *, 1561 const char *, struct io *); 1562void smtp_session_imsg(struct mproc *, struct imsg *); 1563 1564 1565/* smtpf_session.c */ 1566int smtpf_session(struct listener *, int, const struct sockaddr_storage *, 1567 const char *); 1568void smtpf_session_imsg(struct mproc *, struct imsg *); 1569 1570 1571/* smtpd.c */ 1572void imsg_dispatch(struct mproc *, struct imsg *); 1573const char *proc_name(enum smtp_proc_type); 1574const char *proc_title(enum smtp_proc_type); 1575const char *imsg_to_str(int); 1576void log_imsg(int, int, struct imsg *); 1577int fork_proc_backend(const char *, const char *, const char *); 1578 1579 1580/* ssl_smtpd.c */ 1581void *ssl_mta_init(void *, char *, off_t, const char *); 1582void *ssl_smtp_init(void *, int); 1583 1584 1585/* stat_backend.c */ 1586struct stat_backend *stat_backend_lookup(const char *); 1587void stat_increment(const char *, size_t); 1588void stat_decrement(const char *, size_t); 1589void stat_set(const char *, const struct stat_value *); 1590struct stat_value *stat_counter(size_t); 1591struct stat_value *stat_timestamp(time_t); 1592struct stat_value *stat_timeval(struct timeval *); 1593struct stat_value *stat_timespec(struct timespec *); 1594 1595 1596/* table.c */ 1597struct table *table_find(struct smtpd *, const char *, const char *); 1598struct table *table_create(struct smtpd *, const char *, const char *, const char *, 1599 const char *); 1600int table_config(struct table *); 1601int table_open(struct table *); 1602int table_update(struct table *); 1603void table_close(struct table *); 1604int table_check_use(struct table *, uint32_t, uint32_t); 1605int table_check_type(struct table *, uint32_t); 1606int table_check_service(struct table *, uint32_t); 1607int table_lookup(struct table *, struct dict *, const char *, enum table_service, 1608 union lookup *); 1609int table_fetch(struct table *, struct dict *, enum table_service, union lookup *); 1610void table_destroy(struct smtpd *, struct table *); 1611void table_add(struct table *, const char *, const char *); 1612int table_domain_match(const char *, const char *); 1613int table_netaddr_match(const char *, const char *); 1614int table_mailaddr_match(const char *, const char *); 1615int table_regex_match(const char *, const char *); 1616void table_open_all(struct smtpd *); 1617void table_dump_all(struct smtpd *); 1618void table_close_all(struct smtpd *); 1619 1620 1621/* to.c */ 1622int email_to_mailaddr(struct mailaddr *, char *); 1623int text_to_netaddr(struct netaddr *, const char *); 1624int text_to_mailaddr(struct mailaddr *, const char *); 1625int text_to_relayhost(struct relayhost *, const char *); 1626int text_to_userinfo(struct userinfo *, const char *); 1627int text_to_credentials(struct credentials *, const char *); 1628int text_to_expandnode(struct expandnode *, const char *); 1629uint64_t text_to_evpid(const char *); 1630uint32_t text_to_msgid(const char *); 1631const char *sa_to_text(const struct sockaddr *); 1632const char *ss_to_text(const struct sockaddr_storage *); 1633const char *time_to_text(time_t); 1634const char *duration_to_text(time_t); 1635const char *rule_to_text(struct rule *); 1636const char *sockaddr_to_text(struct sockaddr *); 1637const char *mailaddr_to_text(const struct mailaddr *); 1638const char *expandnode_to_text(struct expandnode *); 1639 1640 1641/* util.c */ 1642typedef struct arglist arglist; 1643struct arglist { 1644 char **list; 1645 uint num; 1646 uint nalloc; 1647}; 1648void addargs(arglist *, char *, ...) 1649 __attribute__((format(printf, 2, 3))); 1650int bsnprintf(char *, size_t, const char *, ...) 1651 __attribute__((format (printf, 3, 4))); 1652int mkdirs(char *, mode_t); 1653int safe_fclose(FILE *); 1654int hostname_match(const char *, const char *); 1655int mailaddr_match(const struct mailaddr *, const struct mailaddr *); 1656int valid_localpart(const char *); 1657int valid_domainpart(const char *); 1658int valid_smtp_response(const char *); 1659int secure_file(int, char *, char *, uid_t, int); 1660int lowercase(char *, const char *, size_t); 1661void xlowercase(char *, const char *, size_t); 1662int uppercase(char *, const char *, size_t); 1663uint64_t generate_uid(void); 1664int availdesc(void); 1665int ckdir(const char *, mode_t, uid_t, gid_t, int); 1666int rmtree(char *, int); 1667int mvpurge(char *, char *); 1668int mktmpfile(void); 1669const char *parse_smtp_response(char *, size_t, char **, int *); 1670int xasprintf(char **, const char *, ...); 1671void *xmalloc(size_t); 1672void *xcalloc(size_t, size_t); 1673char *xstrdup(const char *); 1674void *xmemdup(const void *, size_t); 1675char *strip(char *); 1676int io_xprint(struct io *, const char *); 1677int io_xprintf(struct io *, const char *, ...); 1678void log_envelope(const struct envelope *, const char *, const char *, 1679 const char *); 1680int session_socket_error(int); 1681int getmailname(char *, size_t); 1682int base64_encode(unsigned char const *, size_t, char *, size_t); 1683int base64_decode(char const *, unsigned char *, size_t); 1684 1685void log_trace_verbose(int); 1686void log_trace(int, const char *, ...) 1687 __attribute__((format (printf, 2, 3))); 1688 1689/* waitq.c */ 1690int waitq_wait(void *, void (*)(void *, void *, void *), void *); 1691void waitq_run(void *, void *); 1692 1693 1694/* runq.c */ 1695struct runq; 1696 1697int runq_init(struct runq **, void (*)(struct runq *, void *)); 1698int runq_schedule(struct runq *, time_t, void (*)(struct runq *, void *), void *); 1699int runq_delay(struct runq *, unsigned int, void (*)(struct runq *, void *), void *); 1700int runq_cancel(struct runq *, void (*)(struct runq *, void *), void *); 1701int runq_pending(struct runq *, void (*)(struct runq *, void *), void *, time_t *); 1702int runq_next(struct runq *, void (**)(struct runq *, void *), void **, time_t *); 1703