smtpd.h revision 1.654
1/* $OpenBSD: smtpd.h,v 1.654 2020/02/24 16:16:08 millert 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 "6.6.2" 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#define F_PROXY 0x4000 88 89#define RELAY_TLS_OPPORTUNISTIC 0 90#define RELAY_TLS_STARTTLS 1 91#define RELAY_TLS_SMTPS 2 92#define RELAY_TLS_NO 3 93 94#define RELAY_AUTH 0x08 95#define RELAY_LMTP 0x80 96#define RELAY_TLS_VERIFY 0x200 97 98#define MTA_EXT_DSN 0x400 99 100 101#define P_SENDMAIL 0 102#define P_NEWALIASES 1 103#define P_MAKEMAP 2 104 105#define CERT_ERROR -1 106#define CERT_OK 0 107#define CERT_NOCA 1 108#define CERT_NOCERT 2 109#define CERT_INVALID 3 110 111struct userinfo { 112 char username[SMTPD_VUSERNAME_SIZE]; 113 char directory[PATH_MAX]; 114 uid_t uid; 115 gid_t gid; 116}; 117 118struct netaddr { 119 struct sockaddr_storage ss; 120 int bits; 121}; 122 123struct relayhost { 124 uint16_t flags; 125 int tls; 126 char hostname[HOST_NAME_MAX+1]; 127 uint16_t port; 128 char authlabel[PATH_MAX]; 129}; 130 131struct credentials { 132 char username[LINE_MAX]; 133 char password[LINE_MAX]; 134}; 135 136struct destination { 137 char name[HOST_NAME_MAX+1]; 138}; 139 140struct source { 141 struct sockaddr_storage addr; 142}; 143 144struct addrname { 145 struct sockaddr_storage addr; 146 char name[HOST_NAME_MAX+1]; 147}; 148 149union lookup { 150 struct expand *expand; 151 struct credentials creds; 152 struct netaddr netaddr; 153 struct source source; 154 struct destination domain; 155 struct userinfo userinfo; 156 struct mailaddr mailaddr; 157 struct addrname addrname; 158 struct maddrmap *maddrmap; 159 char relayhost[LINE_MAX]; 160}; 161 162/* 163 * Bump IMSG_VERSION whenever a change is made to enum imsg_type. 164 * This will ensure that we can never use a wrong version of smtpctl with smtpd. 165 */ 166#define IMSG_VERSION 16 167 168enum imsg_type { 169 IMSG_NONE, 170 171 IMSG_CTL_OK, 172 IMSG_CTL_FAIL, 173 174 IMSG_CTL_GET_DIGEST, 175 IMSG_CTL_GET_STATS, 176 IMSG_CTL_LIST_MESSAGES, 177 IMSG_CTL_LIST_ENVELOPES, 178 IMSG_CTL_MTA_SHOW_HOSTS, 179 IMSG_CTL_MTA_SHOW_RELAYS, 180 IMSG_CTL_MTA_SHOW_ROUTES, 181 IMSG_CTL_MTA_SHOW_HOSTSTATS, 182 IMSG_CTL_MTA_BLOCK, 183 IMSG_CTL_MTA_UNBLOCK, 184 IMSG_CTL_MTA_SHOW_BLOCK, 185 IMSG_CTL_PAUSE_EVP, 186 IMSG_CTL_PAUSE_MDA, 187 IMSG_CTL_PAUSE_MTA, 188 IMSG_CTL_PAUSE_SMTP, 189 IMSG_CTL_PROFILE, 190 IMSG_CTL_PROFILE_DISABLE, 191 IMSG_CTL_PROFILE_ENABLE, 192 IMSG_CTL_RESUME_EVP, 193 IMSG_CTL_RESUME_MDA, 194 IMSG_CTL_RESUME_MTA, 195 IMSG_CTL_RESUME_SMTP, 196 IMSG_CTL_RESUME_ROUTE, 197 IMSG_CTL_REMOVE, 198 IMSG_CTL_SCHEDULE, 199 IMSG_CTL_SHOW_STATUS, 200 IMSG_CTL_TRACE_DISABLE, 201 IMSG_CTL_TRACE_ENABLE, 202 IMSG_CTL_UPDATE_TABLE, 203 IMSG_CTL_VERBOSE, 204 IMSG_CTL_DISCOVER_EVPID, 205 IMSG_CTL_DISCOVER_MSGID, 206 207 IMSG_CTL_SMTP_SESSION, 208 209 IMSG_GETADDRINFO, 210 IMSG_GETADDRINFO_END, 211 IMSG_GETNAMEINFO, 212 IMSG_RES_QUERY, 213 214 IMSG_CERT_INIT, 215 IMSG_CERT_CERTIFICATE, 216 IMSG_CERT_VERIFY, 217 218 IMSG_SETUP_KEY, 219 IMSG_SETUP_PEER, 220 IMSG_SETUP_DONE, 221 222 IMSG_CONF_START, 223 IMSG_CONF_END, 224 225 IMSG_STAT_INCREMENT, 226 IMSG_STAT_DECREMENT, 227 IMSG_STAT_SET, 228 229 IMSG_LKA_AUTHENTICATE, 230 IMSG_LKA_OPEN_FORWARD, 231 IMSG_LKA_ENVELOPE_SUBMIT, 232 IMSG_LKA_ENVELOPE_COMMIT, 233 234 IMSG_QUEUE_DELIVER, 235 IMSG_QUEUE_DELIVERY_OK, 236 IMSG_QUEUE_DELIVERY_TEMPFAIL, 237 IMSG_QUEUE_DELIVERY_PERMFAIL, 238 IMSG_QUEUE_DELIVERY_LOOP, 239 IMSG_QUEUE_DISCOVER_EVPID, 240 IMSG_QUEUE_DISCOVER_MSGID, 241 IMSG_QUEUE_ENVELOPE_ACK, 242 IMSG_QUEUE_ENVELOPE_COMMIT, 243 IMSG_QUEUE_ENVELOPE_REMOVE, 244 IMSG_QUEUE_ENVELOPE_SCHEDULE, 245 IMSG_QUEUE_ENVELOPE_SUBMIT, 246 IMSG_QUEUE_HOLDQ_HOLD, 247 IMSG_QUEUE_HOLDQ_RELEASE, 248 IMSG_QUEUE_MESSAGE_COMMIT, 249 IMSG_QUEUE_MESSAGE_ROLLBACK, 250 IMSG_QUEUE_SMTP_SESSION, 251 IMSG_QUEUE_TRANSFER, 252 253 IMSG_MDA_DELIVERY_OK, 254 IMSG_MDA_DELIVERY_TEMPFAIL, 255 IMSG_MDA_DELIVERY_PERMFAIL, 256 IMSG_MDA_DELIVERY_LOOP, 257 IMSG_MDA_DELIVERY_HOLD, 258 IMSG_MDA_DONE, 259 IMSG_MDA_FORK, 260 IMSG_MDA_HOLDQ_RELEASE, 261 IMSG_MDA_LOOKUP_USERINFO, 262 IMSG_MDA_KILL, 263 IMSG_MDA_OPEN_MESSAGE, 264 265 IMSG_MTA_DELIVERY_OK, 266 IMSG_MTA_DELIVERY_TEMPFAIL, 267 IMSG_MTA_DELIVERY_PERMFAIL, 268 IMSG_MTA_DELIVERY_LOOP, 269 IMSG_MTA_DELIVERY_HOLD, 270 IMSG_MTA_DNS_HOST, 271 IMSG_MTA_DNS_HOST_END, 272 IMSG_MTA_DNS_MX, 273 IMSG_MTA_DNS_MX_PREFERENCE, 274 IMSG_MTA_HOLDQ_RELEASE, 275 IMSG_MTA_LOOKUP_CREDENTIALS, 276 IMSG_MTA_LOOKUP_SOURCE, 277 IMSG_MTA_LOOKUP_HELO, 278 IMSG_MTA_LOOKUP_SMARTHOST, 279 IMSG_MTA_OPEN_MESSAGE, 280 IMSG_MTA_SCHEDULE, 281 282 IMSG_SCHED_ENVELOPE_BOUNCE, 283 IMSG_SCHED_ENVELOPE_DELIVER, 284 IMSG_SCHED_ENVELOPE_EXPIRE, 285 IMSG_SCHED_ENVELOPE_INJECT, 286 IMSG_SCHED_ENVELOPE_REMOVE, 287 IMSG_SCHED_ENVELOPE_TRANSFER, 288 289 IMSG_SMTP_AUTHENTICATE, 290 IMSG_SMTP_MESSAGE_COMMIT, 291 IMSG_SMTP_MESSAGE_CREATE, 292 IMSG_SMTP_MESSAGE_ROLLBACK, 293 IMSG_SMTP_MESSAGE_OPEN, 294 IMSG_SMTP_CHECK_SENDER, 295 IMSG_SMTP_EXPAND_RCPT, 296 IMSG_SMTP_LOOKUP_HELO, 297 298 IMSG_SMTP_REQ_CONNECT, 299 IMSG_SMTP_REQ_HELO, 300 IMSG_SMTP_REQ_MAIL, 301 IMSG_SMTP_REQ_RCPT, 302 IMSG_SMTP_REQ_DATA, 303 IMSG_SMTP_REQ_EOM, 304 IMSG_SMTP_EVENT_RSET, 305 IMSG_SMTP_EVENT_COMMIT, 306 IMSG_SMTP_EVENT_ROLLBACK, 307 IMSG_SMTP_EVENT_DISCONNECT, 308 309 IMSG_LKA_PROCESSOR_FORK, 310 IMSG_LKA_PROCESSOR_ERRFD, 311 312 IMSG_REPORT_SMTP_LINK_CONNECT, 313 IMSG_REPORT_SMTP_LINK_DISCONNECT, 314 IMSG_REPORT_SMTP_LINK_GREETING, 315 IMSG_REPORT_SMTP_LINK_IDENTIFY, 316 IMSG_REPORT_SMTP_LINK_TLS, 317 IMSG_REPORT_SMTP_LINK_AUTH, 318 IMSG_REPORT_SMTP_TX_RESET, 319 IMSG_REPORT_SMTP_TX_BEGIN, 320 IMSG_REPORT_SMTP_TX_MAIL, 321 IMSG_REPORT_SMTP_TX_RCPT, 322 IMSG_REPORT_SMTP_TX_ENVELOPE, 323 IMSG_REPORT_SMTP_TX_DATA, 324 IMSG_REPORT_SMTP_TX_COMMIT, 325 IMSG_REPORT_SMTP_TX_ROLLBACK, 326 IMSG_REPORT_SMTP_PROTOCOL_CLIENT, 327 IMSG_REPORT_SMTP_PROTOCOL_SERVER, 328 IMSG_REPORT_SMTP_FILTER_RESPONSE, 329 IMSG_REPORT_SMTP_TIMEOUT, 330 331 IMSG_FILTER_SMTP_BEGIN, 332 IMSG_FILTER_SMTP_END, 333 IMSG_FILTER_SMTP_PROTOCOL, 334 IMSG_FILTER_SMTP_DATA_BEGIN, 335 IMSG_FILTER_SMTP_DATA_END, 336 337 IMSG_CA_RSA_PRIVENC, 338 IMSG_CA_RSA_PRIVDEC, 339 IMSG_CA_ECDSA_SIGN, 340}; 341 342enum smtp_proc_type { 343 PROC_PARENT = 0, 344 PROC_LKA, 345 PROC_QUEUE, 346 PROC_CONTROL, 347 PROC_SCHEDULER, 348 PROC_PONY, 349 PROC_CA, 350 PROC_PROCESSOR, 351 PROC_CLIENT, 352}; 353 354enum table_type { 355 T_NONE = 0, 356 T_DYNAMIC = 0x01, /* table with external source */ 357 T_LIST = 0x02, /* table holding a list */ 358 T_HASH = 0x04, /* table holding a hash table */ 359}; 360 361struct table { 362 char t_name[LINE_MAX]; 363 enum table_type t_type; 364 char t_config[PATH_MAX]; 365 366 void *t_handle; 367 struct table_backend *t_backend; 368}; 369 370struct table_backend { 371 const char *name; 372 const unsigned int services; 373 int (*config)(struct table *); 374 int (*add)(struct table *, const char *, const char *); 375 void (*dump)(struct table *); 376 int (*open)(struct table *); 377 int (*update)(struct table *); 378 void (*close)(struct table *); 379 int (*lookup)(struct table *, enum table_service, const char *, char **); 380 int (*fetch)(struct table *, enum table_service, char **); 381}; 382 383 384enum bounce_type { 385 B_FAILED, 386 B_DELAYED, 387 B_DELIVERED 388}; 389 390enum dsn_ret { 391 DSN_RETFULL = 1, 392 DSN_RETHDRS 393}; 394 395struct delivery_bounce { 396 enum bounce_type type; 397 time_t delay; 398 time_t ttl; 399 enum dsn_ret dsn_ret; 400 int mta_without_dsn; 401}; 402 403enum expand_type { 404 EXPAND_INVALID, 405 EXPAND_USERNAME, 406 EXPAND_FILENAME, 407 EXPAND_FILTER, 408 EXPAND_INCLUDE, 409 EXPAND_ADDRESS, 410 EXPAND_ERROR, 411}; 412 413enum filter_phase { 414 FILTER_CONNECT, 415 FILTER_HELO, 416 FILTER_EHLO, 417 FILTER_STARTTLS, 418 FILTER_AUTH, 419 FILTER_MAIL_FROM, 420 FILTER_RCPT_TO, 421 FILTER_DATA, 422 FILTER_DATA_LINE, 423 FILTER_RSET, 424 FILTER_QUIT, 425 FILTER_NOOP, 426 FILTER_HELP, 427 FILTER_WIZ, 428 FILTER_COMMIT, 429 FILTER_PHASES_COUNT /* must be last */ 430}; 431 432struct expandnode { 433 RB_ENTRY(expandnode) entry; 434 TAILQ_ENTRY(expandnode) tq_entry; 435 enum expand_type type; 436 int sameuser; 437 int realuser; 438 int forwarded; 439 struct rule *rule; 440 struct expandnode *parent; 441 unsigned int depth; 442 union { 443 /* 444 * user field handles both expansion user and system user 445 * so we MUST make it large enough to fit a mailaddr user 446 */ 447 char user[SMTPD_MAXLOCALPARTSIZE]; 448 char buffer[EXPAND_BUFFER]; 449 struct mailaddr mailaddr; 450 } u; 451 char subaddress[SMTPD_SUBADDRESS_SIZE]; 452}; 453 454struct expand { 455 RB_HEAD(expandtree, expandnode) tree; 456 TAILQ_HEAD(xnodes, expandnode) *queue; 457 size_t nb_nodes; 458 struct rule *rule; 459 struct expandnode *parent; 460}; 461 462struct maddrnode { 463 TAILQ_ENTRY(maddrnode) entries; 464 struct mailaddr mailaddr; 465}; 466 467struct maddrmap { 468 TAILQ_HEAD(xmaddr, maddrnode) queue; 469}; 470 471#define DSN_SUCCESS 0x01 472#define DSN_FAILURE 0x02 473#define DSN_DELAY 0x04 474#define DSN_NEVER 0x08 475 476#define DSN_ENVID_LEN 100 477 478#define SMTPD_ENVELOPE_VERSION 3 479struct envelope { 480 TAILQ_ENTRY(envelope) entry; 481 482 char dispatcher[HOST_NAME_MAX+1]; 483 484 char tag[SMTPD_TAG_SIZE]; 485 486 uint32_t version; 487 uint64_t id; 488 enum envelope_flags flags; 489 490 char smtpname[HOST_NAME_MAX+1]; 491 char helo[HOST_NAME_MAX+1]; 492 char hostname[HOST_NAME_MAX+1]; 493 char username[SMTPD_MAXMAILADDRSIZE]; 494 char errorline[LINE_MAX]; 495 struct sockaddr_storage ss; 496 497 struct mailaddr sender; 498 struct mailaddr rcpt; 499 struct mailaddr dest; 500 501 char mda_user[SMTPD_VUSERNAME_SIZE]; 502 char mda_subaddress[SMTPD_SUBADDRESS_SIZE]; 503 char mda_exec[LINE_MAX]; 504 505 enum delivery_type type; 506 union { 507 struct delivery_bounce bounce; 508 } agent; 509 510 uint16_t retry; 511 time_t creation; 512 time_t ttl; 513 time_t lasttry; 514 time_t nexttry; 515 time_t lastbounce; 516 517 struct mailaddr dsn_orcpt; 518 char dsn_envid[DSN_ENVID_LEN+1]; 519 uint8_t dsn_notify; 520 enum dsn_ret dsn_ret; 521 522 uint8_t esc_class; 523 uint8_t esc_code; 524}; 525 526struct listener { 527 uint16_t flags; 528 int fd; 529 struct sockaddr_storage ss; 530 in_port_t port; 531 struct timeval timeout; 532 struct event ev; 533 char filter_name[PATH_MAX]; 534 char pki_name[PATH_MAX]; 535 char ca_name[PATH_MAX]; 536 char tag[SMTPD_TAG_SIZE]; 537 char authtable[LINE_MAX]; 538 char hostname[HOST_NAME_MAX+1]; 539 char hostnametable[PATH_MAX]; 540 char sendertable[PATH_MAX]; 541 542 TAILQ_ENTRY(listener) entry; 543 544 int local; /* there must be a better way */ 545}; 546 547struct smtpd { 548 char sc_conffile[PATH_MAX]; 549 size_t sc_maxsize; 550 551#define SMTPD_OPT_VERBOSE 0x00000001 552#define SMTPD_OPT_NOACTION 0x00000002 553 uint32_t sc_opts; 554 555#define SMTPD_EXITING 0x00000001 /* unused */ 556#define SMTPD_MDA_PAUSED 0x00000002 557#define SMTPD_MTA_PAUSED 0x00000004 558#define SMTPD_SMTP_PAUSED 0x00000008 559#define SMTPD_MDA_BUSY 0x00000010 560#define SMTPD_MTA_BUSY 0x00000020 561#define SMTPD_BOUNCE_BUSY 0x00000040 562#define SMTPD_SMTP_DISABLED 0x00000080 563 uint32_t sc_flags; 564 565#define QUEUE_COMPRESSION 0x00000001 566#define QUEUE_ENCRYPTION 0x00000002 567#define QUEUE_EVPCACHE 0x00000004 568 uint32_t sc_queue_flags; 569 char *sc_queue_key; 570 size_t sc_queue_evpcache_size; 571 572 size_t sc_session_max_rcpt; 573 size_t sc_session_max_mails; 574 575 struct dict *sc_mda_wrappers; 576 size_t sc_mda_max_session; 577 size_t sc_mda_max_user_session; 578 size_t sc_mda_task_hiwat; 579 size_t sc_mda_task_lowat; 580 size_t sc_mda_task_release; 581 582 size_t sc_mta_max_deferred; 583 584 size_t sc_scheduler_max_inflight; 585 size_t sc_scheduler_max_evp_batch_size; 586 size_t sc_scheduler_max_msg_batch_size; 587 size_t sc_scheduler_max_schedule; 588 589 struct dict *sc_filter_processes_dict; 590 591 int sc_ttl; 592#define MAX_BOUNCE_WARN 4 593 time_t sc_bounce_warn[MAX_BOUNCE_WARN]; 594 char sc_hostname[HOST_NAME_MAX+1]; 595 struct stat_backend *sc_stat; 596 struct compress_backend *sc_comp; 597 598 time_t sc_uptime; 599 600 /* This is a listener for a local socket used by smtp_enqueue(). */ 601 struct listener *sc_sock_listener; 602 603 TAILQ_HEAD(listenerlist, listener) *sc_listeners; 604 605 TAILQ_HEAD(rulelist, rule) *sc_rules; 606 607 608 struct dict *sc_filters_dict; 609 struct dict *sc_dispatchers; 610 struct dispatcher *sc_dispatcher_bounce; 611 612 struct dict *sc_ca_dict; 613 struct dict *sc_pki_dict; 614 struct dict *sc_ssl_dict; 615 616 struct dict *sc_tables_dict; /* keyed lookup */ 617 618 struct dict *sc_limits_dict; 619 620 char *sc_tls_ciphers; 621 622 char *sc_subaddressing_delim; 623 624 char *sc_srs_key; 625 char *sc_srs_key_backup; 626 int sc_srs_ttl; 627}; 628 629#define TRACE_DEBUG 0x0001 630#define TRACE_IMSG 0x0002 631#define TRACE_IO 0x0004 632#define TRACE_SMTP 0x0008 633#define TRACE_FILTERS 0x0010 634#define TRACE_MTA 0x0020 635#define TRACE_BOUNCE 0x0040 636#define TRACE_SCHEDULER 0x0080 637#define TRACE_LOOKUP 0x0100 638#define TRACE_STAT 0x0200 639#define TRACE_RULES 0x0400 640#define TRACE_MPROC 0x0800 641#define TRACE_EXPAND 0x1000 642#define TRACE_TABLES 0x2000 643#define TRACE_QUEUE 0x4000 644 645#define PROFILE_TOSTAT 0x0001 646#define PROFILE_IMSG 0x0002 647#define PROFILE_QUEUE 0x0004 648 649struct forward_req { 650 uint64_t id; 651 uint8_t status; 652 653 char user[SMTPD_VUSERNAME_SIZE]; 654 uid_t uid; 655 gid_t gid; 656 char directory[PATH_MAX]; 657}; 658 659struct deliver { 660 char dispatcher[EXPAND_BUFFER]; 661 662 struct mailaddr sender; 663 struct mailaddr rcpt; 664 struct mailaddr dest; 665 666 char mda_subaddress[SMTPD_SUBADDRESS_SIZE]; 667 char mda_exec[LINE_MAX]; 668 669 struct userinfo userinfo; 670}; 671 672struct mta_host { 673 SPLAY_ENTRY(mta_host) entry; 674 struct sockaddr *sa; 675 char *ptrname; 676 int refcount; 677 size_t nconn; 678 time_t lastconn; 679 time_t lastptrquery; 680 681#define HOST_IGNORE 0x01 682 int flags; 683}; 684 685struct mta_mx { 686 TAILQ_ENTRY(mta_mx) entry; 687 struct mta_host *host; 688 char *mxname; 689 int preference; 690}; 691 692struct mta_domain { 693 SPLAY_ENTRY(mta_domain) entry; 694 char *name; 695 int as_host; 696 TAILQ_HEAD(, mta_mx) mxs; 697 int mxstatus; 698 int refcount; 699 size_t nconn; 700 time_t lastconn; 701 time_t lastmxquery; 702}; 703 704struct mta_source { 705 SPLAY_ENTRY(mta_source) entry; 706 struct sockaddr *sa; 707 int refcount; 708 size_t nconn; 709 time_t lastconn; 710}; 711 712struct mta_connector { 713 struct mta_source *source; 714 struct mta_relay *relay; 715 716#define CONNECTOR_ERROR_FAMILY 0x0001 717#define CONNECTOR_ERROR_SOURCE 0x0002 718#define CONNECTOR_ERROR_MX 0x0004 719#define CONNECTOR_ERROR_ROUTE_NET 0x0008 720#define CONNECTOR_ERROR_ROUTE_SMTP 0x0010 721#define CONNECTOR_ERROR_ROUTE 0x0018 722#define CONNECTOR_ERROR_BLOCKED 0x0020 723#define CONNECTOR_ERROR 0x00ff 724 725#define CONNECTOR_LIMIT_HOST 0x0100 726#define CONNECTOR_LIMIT_ROUTE 0x0200 727#define CONNECTOR_LIMIT_SOURCE 0x0400 728#define CONNECTOR_LIMIT_RELAY 0x0800 729#define CONNECTOR_LIMIT_CONN 0x1000 730#define CONNECTOR_LIMIT_DOMAIN 0x2000 731#define CONNECTOR_LIMIT 0xff00 732 733#define CONNECTOR_NEW 0x10000 734#define CONNECTOR_WAIT 0x20000 735 int flags; 736 737 int refcount; 738 size_t nconn; 739 time_t lastconn; 740}; 741 742struct mta_route { 743 SPLAY_ENTRY(mta_route) entry; 744 uint64_t id; 745 struct mta_source *src; 746 struct mta_host *dst; 747#define ROUTE_NEW 0x01 748#define ROUTE_RUNQ 0x02 749#define ROUTE_KEEPALIVE 0x04 750#define ROUTE_DISABLED 0xf0 751#define ROUTE_DISABLED_NET 0x10 752#define ROUTE_DISABLED_SMTP 0x20 753 int flags; 754 int nerror; 755 int penalty; 756 int refcount; 757 size_t nconn; 758 time_t lastconn; 759 time_t lastdisc; 760 time_t lastpenalty; 761}; 762 763struct mta_limits { 764 size_t maxconn_per_host; 765 size_t maxconn_per_route; 766 size_t maxconn_per_source; 767 size_t maxconn_per_connector; 768 size_t maxconn_per_relay; 769 size_t maxconn_per_domain; 770 771 time_t conndelay_host; 772 time_t conndelay_route; 773 time_t conndelay_source; 774 time_t conndelay_connector; 775 time_t conndelay_relay; 776 time_t conndelay_domain; 777 778 time_t discdelay_route; 779 780 size_t max_mail_per_session; 781 time_t sessdelay_transaction; 782 time_t sessdelay_keepalive; 783 784 size_t max_failures_per_session; 785 786 int family; 787 788 int task_hiwat; 789 int task_lowat; 790 int task_release; 791}; 792 793struct mta_relay { 794 SPLAY_ENTRY(mta_relay) entry; 795 uint64_t id; 796 797 struct dispatcher *dispatcher; 798 struct mta_domain *domain; 799 struct mta_limits *limits; 800 int tls; 801 int flags; 802 char *backupname; 803 int backuppref; 804 char *sourcetable; 805 uint16_t port; 806 char *pki_name; 807 char *ca_name; 808 char *authtable; 809 char *authlabel; 810 char *helotable; 811 char *heloname; 812 char *secret; 813 int srs; 814 815 int state; 816 size_t ntask; 817 TAILQ_HEAD(, mta_task) tasks; 818 819 struct tree connectors; 820 size_t sourceloop; 821 time_t lastsource; 822 time_t nextsource; 823 824 int fail; 825 char *failstr; 826 827#define RELAY_WAIT_MX 0x01 828#define RELAY_WAIT_PREFERENCE 0x02 829#define RELAY_WAIT_SECRET 0x04 830#define RELAY_WAIT_LIMITS 0x08 831#define RELAY_WAIT_SOURCE 0x10 832#define RELAY_WAIT_CONNECTOR 0x20 833#define RELAY_WAIT_SMARTHOST 0x40 834#define RELAY_WAITMASK 0x7f 835 int status; 836 837 int refcount; 838 size_t nconn; 839 size_t nconn_ready; 840 time_t lastconn; 841}; 842 843struct mta_envelope { 844 TAILQ_ENTRY(mta_envelope) entry; 845 uint64_t id; 846 uint64_t session; 847 time_t creation; 848 char *smtpname; 849 char *dest; 850 char *rcpt; 851 struct mta_task *task; 852 int delivery; 853 854 int ext; 855 char *dsn_orcpt; 856 char dsn_envid[DSN_ENVID_LEN+1]; 857 uint8_t dsn_notify; 858 enum dsn_ret dsn_ret; 859 860 char status[LINE_MAX]; 861}; 862 863struct mta_task { 864 TAILQ_ENTRY(mta_task) entry; 865 struct mta_relay *relay; 866 uint32_t msgid; 867 TAILQ_HEAD(, mta_envelope) envelopes; 868 char *sender; 869}; 870 871struct passwd; 872 873struct queue_backend { 874 int (*init)(struct passwd *, int, const char *); 875}; 876 877struct compress_backend { 878 size_t (*compress_chunk)(void *, size_t, void *, size_t); 879 size_t (*uncompress_chunk)(void *, size_t, void *, size_t); 880 int (*compress_file)(FILE *, FILE *); 881 int (*uncompress_file)(FILE *, FILE *); 882}; 883 884/* auth structures */ 885enum auth_type { 886 AUTH_BSD, 887 AUTH_PWD, 888}; 889 890struct auth_backend { 891 int (*authenticate)(char *, char *); 892}; 893 894struct scheduler_backend { 895 int (*init)(const char *); 896 897 int (*insert)(struct scheduler_info *); 898 size_t (*commit)(uint32_t); 899 size_t (*rollback)(uint32_t); 900 901 int (*update)(struct scheduler_info *); 902 int (*delete)(uint64_t); 903 int (*hold)(uint64_t, uint64_t); 904 int (*release)(int, uint64_t, int); 905 906 int (*batch)(int, int*, size_t*, uint64_t*, int*); 907 908 size_t (*messages)(uint32_t, uint32_t *, size_t); 909 size_t (*envelopes)(uint64_t, struct evpstate *, size_t); 910 int (*schedule)(uint64_t); 911 int (*remove)(uint64_t); 912 int (*suspend)(uint64_t); 913 int (*resume)(uint64_t); 914 int (*query)(uint64_t); 915}; 916 917enum stat_type { 918 STAT_COUNTER, 919 STAT_TIMESTAMP, 920 STAT_TIMEVAL, 921 STAT_TIMESPEC, 922}; 923 924struct stat_value { 925 enum stat_type type; 926 union stat_v { 927 size_t counter; 928 time_t timestamp; 929 struct timeval tv; 930 struct timespec ts; 931 } u; 932}; 933 934#define STAT_KEY_SIZE 1024 935struct stat_kv { 936 void *iter; 937 char key[STAT_KEY_SIZE]; 938 struct stat_value val; 939}; 940 941struct stat_backend { 942 void (*init)(void); 943 void (*close)(void); 944 void (*increment)(const char *, size_t); 945 void (*decrement)(const char *, size_t); 946 void (*set)(const char *, const struct stat_value *); 947 int (*iter)(void **, char **, struct stat_value *); 948}; 949 950struct stat_digest { 951 time_t startup; 952 time_t timestamp; 953 954 size_t clt_connect; 955 size_t clt_disconnect; 956 957 size_t evp_enqueued; 958 size_t evp_dequeued; 959 960 size_t evp_expired; 961 size_t evp_removed; 962 size_t evp_bounce; 963 964 size_t dlv_ok; 965 size_t dlv_permfail; 966 size_t dlv_tempfail; 967 size_t dlv_loop; 968}; 969 970 971struct mproc { 972 pid_t pid; 973 char *name; 974 int proc; 975 void (*handler)(struct mproc *, struct imsg *); 976 struct imsgbuf imsgbuf; 977 978 char *m_buf; 979 size_t m_alloc; 980 size_t m_pos; 981 uint32_t m_type; 982 uint32_t m_peerid; 983 pid_t m_pid; 984 int m_fd; 985 986 int enable; 987 short events; 988 struct event ev; 989 void *data; 990}; 991 992struct msg { 993 const uint8_t *pos; 994 const uint8_t *end; 995}; 996 997extern enum smtp_proc_type smtpd_process; 998 999extern int tracing; 1000extern int foreground_log; 1001extern int profiling; 1002 1003extern struct mproc *p_control; 1004extern struct mproc *p_parent; 1005extern struct mproc *p_lka; 1006extern struct mproc *p_queue; 1007extern struct mproc *p_scheduler; 1008extern struct mproc *p_pony; 1009extern struct mproc *p_ca; 1010 1011extern struct smtpd *env; 1012extern void (*imsg_callback)(struct mproc *, struct imsg *); 1013 1014/* inter-process structures */ 1015 1016struct bounce_req_msg { 1017 uint64_t evpid; 1018 time_t timestamp; 1019 struct delivery_bounce bounce; 1020}; 1021 1022enum dns_error { 1023 DNS_OK = 0, 1024 DNS_RETRY, 1025 DNS_EINVAL, 1026 DNS_ENONAME, 1027 DNS_ENOTFOUND, 1028}; 1029 1030enum lka_resp_status { 1031 LKA_OK, 1032 LKA_TEMPFAIL, 1033 LKA_PERMFAIL 1034}; 1035 1036enum filter_type { 1037 FILTER_TYPE_BUILTIN, 1038 FILTER_TYPE_PROC, 1039 FILTER_TYPE_CHAIN, 1040}; 1041 1042enum filter_subsystem { 1043 FILTER_SUBSYSTEM_SMTP_IN = 1<<0, 1044 FILTER_SUBSYSTEM_SMTP_OUT = 1<<1, 1045}; 1046 1047struct filter_proc { 1048 const char *command; 1049 const char *user; 1050 const char *group; 1051 const char *chroot; 1052 int errfd; 1053 enum filter_subsystem filter_subsystem; 1054}; 1055 1056struct filter_config { 1057 char *name; 1058 enum filter_subsystem filter_subsystem; 1059 enum filter_type filter_type; 1060 enum filter_phase phase; 1061 char *reject; 1062 char *disconnect; 1063 char *rewrite; 1064 char *report; 1065 uint8_t junk; 1066 uint8_t bypass; 1067 char *proc; 1068 1069 const char **chain; 1070 size_t chain_size; 1071 struct dict chain_procs; 1072 1073 int8_t not_fcrdns; 1074 int8_t fcrdns; 1075 1076 int8_t not_rdns; 1077 int8_t rdns; 1078 1079 int8_t not_rdns_table; 1080 struct table *rdns_table; 1081 1082 int8_t not_rdns_regex; 1083 struct table *rdns_regex; 1084 1085 int8_t not_src_table; 1086 struct table *src_table; 1087 1088 int8_t not_src_regex; 1089 struct table *src_regex; 1090 1091 int8_t not_helo_table; 1092 struct table *helo_table; 1093 1094 int8_t not_helo_regex; 1095 struct table *helo_regex; 1096 1097 int8_t not_auth; 1098 int8_t auth; 1099 1100 int8_t not_auth_table; 1101 struct table *auth_table; 1102 1103 int8_t not_auth_regex; 1104 struct table *auth_regex; 1105 1106 int8_t not_mail_from_table; 1107 struct table *mail_from_table; 1108 1109 int8_t not_mail_from_regex; 1110 struct table *mail_from_regex; 1111 1112 int8_t not_rcpt_to_table; 1113 struct table *rcpt_to_table; 1114 1115 int8_t not_rcpt_to_regex; 1116 struct table *rcpt_to_regex; 1117 1118}; 1119 1120enum filter_status { 1121 FILTER_PROCEED, 1122 FILTER_REWRITE, 1123 FILTER_REJECT, 1124 FILTER_DISCONNECT, 1125 FILTER_JUNK, 1126}; 1127 1128enum ca_resp_status { 1129 CA_OK, 1130 CA_FAIL 1131}; 1132 1133enum mda_resp_status { 1134 MDA_OK, 1135 MDA_TEMPFAIL, 1136 MDA_PERMFAIL 1137}; 1138 1139struct msg_walkinfo { 1140 struct event ev; 1141 uint32_t msgid; 1142 uint32_t peerid; 1143 size_t n_evp; 1144 void *data; 1145 int done; 1146}; 1147 1148 1149enum dispatcher_type { 1150 DISPATCHER_LOCAL, 1151 DISPATCHER_REMOTE, 1152 DISPATCHER_BOUNCE, 1153}; 1154 1155struct dispatcher_local { 1156 uint8_t is_mbox; /* only for MBOX */ 1157 1158 uint8_t expand_only; 1159 uint8_t forward_only; 1160 1161 char *mda_wrapper; 1162 char *command; 1163 1164 char *table_alias; 1165 char *table_virtual; 1166 char *table_userbase; 1167 1168 char *user; 1169}; 1170 1171struct dispatcher_remote { 1172 char *helo; 1173 char *helo_source; 1174 1175 char *source; 1176 1177 char *ca; 1178 char *pki; 1179 1180 char *mail_from; 1181 1182 char *smarthost; 1183 int smarthost_domain; 1184 1185 char *auth; 1186 int tls_required; 1187 int tls_noverify; 1188 1189 int backup; 1190 char *backupmx; 1191 1192 char *filtername; 1193 1194 int srs; 1195}; 1196 1197struct dispatcher_bounce { 1198}; 1199 1200struct dispatcher { 1201 enum dispatcher_type type; 1202 union dispatcher_agent { 1203 struct dispatcher_local local; 1204 struct dispatcher_remote remote; 1205 struct dispatcher_bounce bounce; 1206 } u; 1207 1208 time_t ttl; 1209}; 1210 1211struct rule { 1212 TAILQ_ENTRY(rule) r_entry; 1213 1214 uint8_t reject; 1215 1216 int8_t flag_tag; 1217 int8_t flag_from; 1218 int8_t flag_for; 1219 int8_t flag_from_rdns; 1220 int8_t flag_from_socket; 1221 1222 int8_t flag_tag_regex; 1223 int8_t flag_from_regex; 1224 int8_t flag_for_regex; 1225 1226 int8_t flag_smtp_helo; 1227 int8_t flag_smtp_starttls; 1228 int8_t flag_smtp_auth; 1229 int8_t flag_smtp_mail_from; 1230 int8_t flag_smtp_rcpt_to; 1231 1232 int8_t flag_smtp_helo_regex; 1233 int8_t flag_smtp_starttls_regex; 1234 int8_t flag_smtp_auth_regex; 1235 int8_t flag_smtp_mail_from_regex; 1236 int8_t flag_smtp_rcpt_to_regex; 1237 1238 1239 char *table_tag; 1240 char *table_from; 1241 char *table_for; 1242 1243 char *table_smtp_helo; 1244 char *table_smtp_auth; 1245 char *table_smtp_mail_from; 1246 char *table_smtp_rcpt_to; 1247 1248 char *dispatcher; 1249}; 1250 1251 1252/* aliases.c */ 1253int aliases_get(struct expand *, const char *); 1254int aliases_virtual_get(struct expand *, const struct mailaddr *); 1255int alias_parse(struct expandnode *, const char *); 1256 1257 1258/* auth.c */ 1259struct auth_backend *auth_backend_lookup(enum auth_type); 1260 1261 1262/* bounce.c */ 1263void bounce_add(uint64_t); 1264void bounce_fd(int); 1265 1266 1267/* ca.c */ 1268int ca(void); 1269int ca_X509_verify(void *, void *, const char *, const char *, const char **); 1270void ca_imsg(struct mproc *, struct imsg *); 1271void ca_init(void); 1272void ca_engine_init(void); 1273 1274 1275/* cert.c */ 1276int cert_init(const char *, int, 1277 void (*)(void *, int, const char *, const void *, size_t), void *); 1278int cert_verify(const void *, const char *, int, void (*)(void *, int), void *); 1279void cert_dispatch_request(struct mproc *, struct imsg *); 1280void cert_dispatch_result(struct mproc *, struct imsg *); 1281 1282 1283/* compress_backend.c */ 1284struct compress_backend *compress_backend_lookup(const char *); 1285size_t compress_chunk(void *, size_t, void *, size_t); 1286size_t uncompress_chunk(void *, size_t, void *, size_t); 1287int compress_file(FILE *, FILE *); 1288int uncompress_file(FILE *, FILE *); 1289 1290/* config.c */ 1291#define PURGE_LISTENERS 0x01 1292#define PURGE_TABLES 0x02 1293#define PURGE_RULES 0x04 1294#define PURGE_PKI 0x08 1295#define PURGE_PKI_KEYS 0x10 1296#define PURGE_DISPATCHERS 0x20 1297#define PURGE_EVERYTHING 0xff 1298struct smtpd *config_default(void); 1299void purge_config(uint8_t); 1300void config_process(enum smtp_proc_type); 1301void config_peer(enum smtp_proc_type); 1302 1303 1304/* control.c */ 1305int control(void); 1306int control_create_socket(void); 1307 1308 1309/* crypto.c */ 1310int crypto_setup(const char *, size_t); 1311int crypto_encrypt_file(FILE *, FILE *); 1312int crypto_decrypt_file(FILE *, FILE *); 1313size_t crypto_encrypt_buffer(const char *, size_t, char *, size_t); 1314size_t crypto_decrypt_buffer(const char *, size_t, char *, size_t); 1315 1316 1317/* dns.c */ 1318void dns_imsg(struct mproc *, struct imsg *); 1319 1320 1321/* enqueue.c */ 1322int enqueue(int, char **, FILE *); 1323 1324 1325/* envelope.c */ 1326void envelope_set_errormsg(struct envelope *, char *, ...); 1327void envelope_set_esc_class(struct envelope *, enum enhanced_status_class); 1328void envelope_set_esc_code(struct envelope *, enum enhanced_status_code); 1329int envelope_load_buffer(struct envelope *, const char *, size_t); 1330int envelope_dump_buffer(const struct envelope *, char *, size_t); 1331 1332 1333/* expand.c */ 1334int expand_cmp(struct expandnode *, struct expandnode *); 1335void expand_insert(struct expand *, struct expandnode *); 1336struct expandnode *expand_lookup(struct expand *, struct expandnode *); 1337void expand_clear(struct expand *); 1338void expand_free(struct expand *); 1339int expand_line(struct expand *, const char *, int); 1340int expand_to_text(struct expand *, char *, size_t); 1341RB_PROTOTYPE(expandtree, expandnode, nodes, expand_cmp); 1342 1343 1344/* forward.c */ 1345int forwards_get(int, struct expand *); 1346 1347 1348/* limit.c */ 1349void limit_mta_set_defaults(struct mta_limits *); 1350int limit_mta_set(struct mta_limits *, const char*, int64_t); 1351 1352 1353/* lka.c */ 1354int lka(void); 1355 1356 1357/* lka_proc.c */ 1358int lka_proc_ready(void); 1359void lka_proc_forked(const char *, uint32_t, int); 1360void lka_proc_errfd(const char *, int); 1361struct io *lka_proc_get_io(const char *); 1362 1363 1364/* lka_report.c */ 1365void lka_report_init(void); 1366void lka_report_register_hook(const char *, const char *); 1367void lka_report_smtp_link_connect(const char *, struct timeval *, uint64_t, const char *, int, 1368 const struct sockaddr_storage *, const struct sockaddr_storage *); 1369void lka_report_smtp_link_disconnect(const char *, struct timeval *, uint64_t); 1370void lka_report_smtp_link_greeting(const char *, uint64_t, struct timeval *, 1371 const char *); 1372void lka_report_smtp_link_identify(const char *, struct timeval *, uint64_t, const char *, const char *); 1373void lka_report_smtp_link_tls(const char *, struct timeval *, uint64_t, const char *); 1374void lka_report_smtp_link_auth(const char *, struct timeval *, uint64_t, const char *, const char *); 1375void lka_report_smtp_tx_reset(const char *, struct timeval *, uint64_t, uint32_t); 1376void lka_report_smtp_tx_begin(const char *, struct timeval *, uint64_t, uint32_t); 1377void lka_report_smtp_tx_mail(const char *, struct timeval *, uint64_t, uint32_t, const char *, int); 1378void lka_report_smtp_tx_rcpt(const char *, struct timeval *, uint64_t, uint32_t, const char *, int); 1379void lka_report_smtp_tx_envelope(const char *, struct timeval *, uint64_t, uint32_t, uint64_t); 1380void lka_report_smtp_tx_commit(const char *, struct timeval *, uint64_t, uint32_t, size_t); 1381void lka_report_smtp_tx_data(const char *, struct timeval *, uint64_t, uint32_t, int); 1382void lka_report_smtp_tx_rollback(const char *, struct timeval *, uint64_t, uint32_t); 1383void lka_report_smtp_protocol_client(const char *, struct timeval *, uint64_t, const char *); 1384void lka_report_smtp_protocol_server(const char *, struct timeval *, uint64_t, const char *); 1385void lka_report_smtp_filter_response(const char *, struct timeval *, uint64_t, 1386 int, int, const char *); 1387void lka_report_smtp_timeout(const char *, struct timeval *, uint64_t); 1388void lka_report_filter_report(uint64_t, const char *, int, const char *, 1389 struct timeval *, const char *); 1390void lka_report_proc(const char *, const char *); 1391 1392 1393/* lka_filter.c */ 1394void lka_filter_init(void); 1395void lka_filter_register_hook(const char *, const char *); 1396void lka_filter_ready(void); 1397int lka_filter_proc_in_session(uint64_t, const char *); 1398void lka_filter_begin(uint64_t, const char *); 1399void lka_filter_end(uint64_t); 1400void lka_filter_protocol(uint64_t, enum filter_phase, const char *); 1401void lka_filter_data_begin(uint64_t); 1402void lka_filter_data_end(uint64_t); 1403int lka_filter_response(uint64_t, const char *, const char *); 1404 1405 1406/* lka_session.c */ 1407void lka_session(uint64_t, struct envelope *); 1408void lka_session_forward_reply(struct forward_req *, int); 1409 1410 1411/* log.c */ 1412void vlog(int, const char *, va_list); 1413void logit(int, const char *, ...) __attribute__((format (printf, 2, 3))); 1414 1415 1416/* mda.c */ 1417void mda_postfork(void); 1418void mda_postprivdrop(void); 1419void mda_imsg(struct mproc *, struct imsg *); 1420 1421 1422/* mda_mbox.c */ 1423void mda_mbox_init(struct deliver *); 1424void mda_mbox(struct deliver *); 1425 1426 1427/* mda_unpriv.c */ 1428void mda_unpriv(struct dispatcher *, struct deliver *, const char *, const char *); 1429 1430 1431/* mda_variables.c */ 1432ssize_t mda_expand_format(char *, size_t, const struct deliver *, 1433 const struct userinfo *, const char *); 1434 1435 1436/* makemap.c */ 1437int makemap(int, int, char **); 1438 1439 1440/* mailaddr.c */ 1441int mailaddr_line(struct maddrmap *, const char *); 1442void maddrmap_init(struct maddrmap *); 1443void maddrmap_insert(struct maddrmap *, struct maddrnode *); 1444void maddrmap_free(struct maddrmap *); 1445 1446 1447/* mproc.c */ 1448int mproc_fork(struct mproc *, const char*, char **); 1449void mproc_init(struct mproc *, int); 1450void mproc_clear(struct mproc *); 1451void mproc_enable(struct mproc *); 1452void mproc_disable(struct mproc *); 1453void mproc_event_add(struct mproc *); 1454void m_compose(struct mproc *, uint32_t, uint32_t, pid_t, int, void *, size_t); 1455void m_composev(struct mproc *, uint32_t, uint32_t, pid_t, int, 1456 const struct iovec *, int); 1457void m_forward(struct mproc *, struct imsg *); 1458void m_create(struct mproc *, uint32_t, uint32_t, pid_t, int); 1459void m_add(struct mproc *, const void *, size_t); 1460void m_add_int(struct mproc *, int); 1461void m_add_u32(struct mproc *, uint32_t); 1462void m_add_size(struct mproc *, size_t); 1463void m_add_time(struct mproc *, time_t); 1464void m_add_timeval(struct mproc *, struct timeval *tv); 1465void m_add_string(struct mproc *, const char *); 1466void m_add_data(struct mproc *, const void *, size_t); 1467void m_add_evpid(struct mproc *, uint64_t); 1468void m_add_msgid(struct mproc *, uint32_t); 1469void m_add_id(struct mproc *, uint64_t); 1470void m_add_sockaddr(struct mproc *, const struct sockaddr *); 1471void m_add_mailaddr(struct mproc *, const struct mailaddr *); 1472void m_add_envelope(struct mproc *, const struct envelope *); 1473void m_add_params(struct mproc *, struct dict *); 1474void m_close(struct mproc *); 1475void m_flush(struct mproc *); 1476 1477void m_msg(struct msg *, struct imsg *); 1478int m_is_eom(struct msg *); 1479void m_end(struct msg *); 1480void m_get_int(struct msg *, int *); 1481void m_get_size(struct msg *, size_t *); 1482void m_get_u32(struct msg *, uint32_t *); 1483void m_get_time(struct msg *, time_t *); 1484void m_get_timeval(struct msg *, struct timeval *); 1485void m_get_string(struct msg *, const char **); 1486void m_get_data(struct msg *, const void **, size_t *); 1487void m_get_evpid(struct msg *, uint64_t *); 1488void m_get_msgid(struct msg *, uint32_t *); 1489void m_get_id(struct msg *, uint64_t *); 1490void m_get_sockaddr(struct msg *, struct sockaddr *); 1491void m_get_mailaddr(struct msg *, struct mailaddr *); 1492void m_get_envelope(struct msg *, struct envelope *); 1493void m_get_params(struct msg *, struct dict *); 1494void m_clear_params(struct dict *); 1495 1496 1497/* mta.c */ 1498void mta_postfork(void); 1499void mta_postprivdrop(void); 1500void mta_imsg(struct mproc *, struct imsg *); 1501void mta_route_ok(struct mta_relay *, struct mta_route *); 1502void mta_route_error(struct mta_relay *, struct mta_route *); 1503void mta_route_down(struct mta_relay *, struct mta_route *); 1504void mta_route_collect(struct mta_relay *, struct mta_route *); 1505void mta_source_error(struct mta_relay *, struct mta_route *, const char *); 1506void mta_delivery_log(struct mta_envelope *, const char *, const char *, int, const char *); 1507void mta_delivery_notify(struct mta_envelope *); 1508struct mta_task *mta_route_next_task(struct mta_relay *, struct mta_route *); 1509const char *mta_host_to_text(struct mta_host *); 1510const char *mta_relay_to_text(struct mta_relay *); 1511 1512 1513/* mta_session.c */ 1514void mta_session(struct mta_relay *, struct mta_route *, const char *); 1515void mta_session_imsg(struct mproc *, struct imsg *); 1516 1517 1518/* parse.y */ 1519int parse_config(struct smtpd *, const char *, int); 1520int cmdline_symset(char *); 1521 1522 1523/* queue.c */ 1524int queue(void); 1525 1526 1527/* queue_backend.c */ 1528uint32_t queue_generate_msgid(void); 1529uint64_t queue_generate_evpid(uint32_t); 1530int queue_init(const char *, int); 1531int queue_close(void); 1532int queue_message_create(uint32_t *); 1533int queue_message_delete(uint32_t); 1534int queue_message_commit(uint32_t); 1535int queue_message_fd_r(uint32_t); 1536int queue_message_fd_rw(uint32_t); 1537int queue_envelope_create(struct envelope *); 1538int queue_envelope_delete(uint64_t); 1539int queue_envelope_load(uint64_t, struct envelope *); 1540int queue_envelope_update(struct envelope *); 1541int queue_envelope_walk(struct envelope *); 1542int queue_message_walk(struct envelope *, uint32_t, int *, void **); 1543 1544 1545/* report_smtp.c */ 1546void report_smtp_link_connect(const char *, uint64_t, const char *, int, 1547 const struct sockaddr_storage *, const struct sockaddr_storage *); 1548void report_smtp_link_disconnect(const char *, uint64_t); 1549void report_smtp_link_greeting(const char *, uint64_t, const char *); 1550void report_smtp_link_identify(const char *, uint64_t, const char *, const char *); 1551void report_smtp_link_tls(const char *, uint64_t, const char *); 1552void report_smtp_link_auth(const char *, uint64_t, const char *, const char *); 1553void report_smtp_tx_reset(const char *, uint64_t, uint32_t); 1554void report_smtp_tx_begin(const char *, uint64_t, uint32_t); 1555void report_smtp_tx_mail(const char *, uint64_t, uint32_t, const char *, int); 1556void report_smtp_tx_rcpt(const char *, uint64_t, uint32_t, const char *, int); 1557void report_smtp_tx_envelope(const char *, uint64_t, uint32_t, uint64_t); 1558void report_smtp_tx_data(const char *, uint64_t, uint32_t, int); 1559void report_smtp_tx_commit(const char *, uint64_t, uint32_t, size_t); 1560void report_smtp_tx_rollback(const char *, uint64_t, uint32_t); 1561void report_smtp_protocol_client(const char *, uint64_t, const char *); 1562void report_smtp_protocol_server(const char *, uint64_t, const char *); 1563void report_smtp_filter_response(const char *, uint64_t, int, int, const char *); 1564void report_smtp_timeout(const char *, uint64_t); 1565 1566 1567/* ruleset.c */ 1568struct rule *ruleset_match(const struct envelope *); 1569 1570 1571/* scheduler.c */ 1572int scheduler(void); 1573 1574 1575/* scheduler_bakend.c */ 1576struct scheduler_backend *scheduler_backend_lookup(const char *); 1577void scheduler_info(struct scheduler_info *, struct envelope *); 1578 1579 1580/* pony.c */ 1581int pony(void); 1582void pony_imsg(struct mproc *, struct imsg *); 1583 1584 1585/* resolver.c */ 1586void resolver_getaddrinfo(const char *, const char *, const struct addrinfo *, 1587 void(*)(void *, int, struct addrinfo*), void *); 1588void resolver_getnameinfo(const struct sockaddr *, int, 1589 void(*)(void *, int, const char *, const char *), void *); 1590void resolver_res_query(const char *, int, int, 1591 void (*cb)(void *, int, int, int, const void *, int), void *); 1592void resolver_dispatch_request(struct mproc *, struct imsg *); 1593void resolver_dispatch_result(struct mproc *, struct imsg *); 1594 1595 1596/* smtp.c */ 1597void smtp_postfork(void); 1598void smtp_postprivdrop(void); 1599void smtp_imsg(struct mproc *, struct imsg *); 1600void smtp_configure(void); 1601void smtp_collect(void); 1602 1603 1604/* smtp_session.c */ 1605int smtp_session(struct listener *, int, const struct sockaddr_storage *, 1606 const char *, struct io *); 1607void smtp_session_imsg(struct mproc *, struct imsg *); 1608 1609 1610/* smtpf_session.c */ 1611int smtpf_session(struct listener *, int, const struct sockaddr_storage *, 1612 const char *); 1613void smtpf_session_imsg(struct mproc *, struct imsg *); 1614 1615 1616/* smtpd.c */ 1617void imsg_dispatch(struct mproc *, struct imsg *); 1618const char *proc_name(enum smtp_proc_type); 1619const char *proc_title(enum smtp_proc_type); 1620const char *imsg_to_str(int); 1621void log_imsg(int, int, struct imsg *); 1622int fork_proc_backend(const char *, const char *, const char *); 1623 1624 1625/* srs.c */ 1626const char *srs_encode(const char *, const char *); 1627const char *srs_decode(const char *); 1628 1629 1630/* ssl_smtpd.c */ 1631void *ssl_mta_init(void *, char *, off_t, const char *); 1632void *ssl_smtp_init(void *, int); 1633 1634 1635/* stat_backend.c */ 1636struct stat_backend *stat_backend_lookup(const char *); 1637void stat_increment(const char *, size_t); 1638void stat_decrement(const char *, size_t); 1639void stat_set(const char *, const struct stat_value *); 1640struct stat_value *stat_counter(size_t); 1641struct stat_value *stat_timestamp(time_t); 1642struct stat_value *stat_timeval(struct timeval *); 1643struct stat_value *stat_timespec(struct timespec *); 1644 1645 1646/* table.c */ 1647struct table *table_find(struct smtpd *, const char *); 1648struct table *table_create(struct smtpd *, const char *, const char *, 1649 const char *); 1650int table_config(struct table *); 1651int table_open(struct table *); 1652int table_update(struct table *); 1653void table_close(struct table *); 1654void table_dump(struct table *); 1655int table_check_use(struct table *, uint32_t, uint32_t); 1656int table_check_type(struct table *, uint32_t); 1657int table_check_service(struct table *, uint32_t); 1658int table_match(struct table *, enum table_service, const char *); 1659int table_lookup(struct table *, enum table_service, const char *, 1660 union lookup *); 1661int table_fetch(struct table *, enum table_service, union lookup *); 1662void table_destroy(struct smtpd *, struct table *); 1663void table_add(struct table *, const char *, const char *); 1664int table_domain_match(const char *, const char *); 1665int table_netaddr_match(const char *, const char *); 1666int table_mailaddr_match(const char *, const char *); 1667int table_regex_match(const char *, const char *); 1668void table_open_all(struct smtpd *); 1669void table_dump_all(struct smtpd *); 1670void table_close_all(struct smtpd *); 1671 1672 1673/* to.c */ 1674int email_to_mailaddr(struct mailaddr *, char *); 1675int text_to_netaddr(struct netaddr *, const char *); 1676int text_to_mailaddr(struct mailaddr *, const char *); 1677int text_to_relayhost(struct relayhost *, const char *); 1678int text_to_userinfo(struct userinfo *, const char *); 1679int text_to_credentials(struct credentials *, const char *); 1680int text_to_expandnode(struct expandnode *, const char *); 1681uint64_t text_to_evpid(const char *); 1682uint32_t text_to_msgid(const char *); 1683const char *sa_to_text(const struct sockaddr *); 1684const char *ss_to_text(const struct sockaddr_storage *); 1685const char *time_to_text(time_t); 1686const char *duration_to_text(time_t); 1687const char *rule_to_text(struct rule *); 1688const char *sockaddr_to_text(struct sockaddr *); 1689const char *mailaddr_to_text(const struct mailaddr *); 1690const char *expandnode_to_text(struct expandnode *); 1691 1692 1693/* util.c */ 1694typedef struct arglist arglist; 1695struct arglist { 1696 char **list; 1697 uint num; 1698 uint nalloc; 1699}; 1700void addargs(arglist *, char *, ...) 1701 __attribute__((format(printf, 2, 3))); 1702int bsnprintf(char *, size_t, const char *, ...) 1703 __attribute__((format (printf, 3, 4))); 1704int safe_fclose(FILE *); 1705int hostname_match(const char *, const char *); 1706int mailaddr_match(const struct mailaddr *, const struct mailaddr *); 1707int valid_localpart(const char *); 1708int valid_domainpart(const char *); 1709int valid_domainname(const char *); 1710int valid_smtp_response(const char *); 1711int secure_file(int, char *, char *, uid_t, int); 1712int lowercase(char *, const char *, size_t); 1713void xlowercase(char *, const char *, size_t); 1714int uppercase(char *, const char *, size_t); 1715uint64_t generate_uid(void); 1716int availdesc(void); 1717int ckdir(const char *, mode_t, uid_t, gid_t, int); 1718int rmtree(char *, int); 1719int mvpurge(char *, char *); 1720int mktmpfile(void); 1721const char *parse_smtp_response(char *, size_t, char **, int *); 1722int xasprintf(char **, const char *, ...) 1723 __attribute__((__format__ (printf, 2, 3))); 1724void *xmalloc(size_t); 1725void *xcalloc(size_t, size_t); 1726char *xstrdup(const char *); 1727void *xmemdup(const void *, size_t); 1728char *strip(char *); 1729int io_xprint(struct io *, const char *); 1730int io_xprintf(struct io *, const char *, ...) 1731 __attribute__((__format__ (printf, 2, 3))); 1732void log_envelope(const struct envelope *, const char *, const char *, 1733 const char *); 1734int session_socket_error(int); 1735int getmailname(char *, size_t); 1736int base64_encode(unsigned char const *, size_t, char *, size_t); 1737int base64_decode(char const *, unsigned char *, size_t); 1738int base64_encode_rfc3548(unsigned char const *, size_t, 1739 char *, size_t); 1740 1741void log_trace_verbose(int); 1742void log_trace(int, const char *, ...) 1743 __attribute__((format (printf, 2, 3))); 1744 1745/* waitq.c */ 1746int waitq_wait(void *, void (*)(void *, void *, void *), void *); 1747void waitq_run(void *, void *); 1748 1749 1750/* runq.c */ 1751struct runq; 1752 1753int runq_init(struct runq **, void (*)(struct runq *, void *)); 1754int runq_schedule(struct runq *, time_t, void *); 1755int runq_schedule_at(struct runq *, time_t, void *); 1756int runq_cancel(struct runq *, void *); 1757int runq_pending(struct runq *, void *, time_t *); 1758