smtpd.h revision 1.475
1/* $OpenBSD: smtpd.h,v 1.475 2015/09/07 15:36:53 gilles Exp $ */ 2 3/* 4 * Copyright (c) 2008 Gilles Chehade <gilles@poolp.org> 5 * Copyright (c) 2008 Pierre-Yves Ritschard <pyr@openbsd.org> 6 * Copyright (c) 2012 Eric Faurot <eric@openbsd.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21#ifndef nitems 22#define nitems(_a) (sizeof((_a)) / sizeof((_a)[0])) 23#endif 24 25#include "smtpd-defines.h" 26#include "smtpd-api.h" 27#include "ioev.h" 28#include "iobuf.h" 29 30#include "rfc2822.h" 31 32#define CONF_FILE "/etc/mail/smtpd.conf" 33#define MAILNAME_FILE "/etc/mail/mailname" 34#define CA_FILE "/etc/ssl/cert.pem" 35 36#define PROC_COUNT 7 37 38#define MAX_HOPS_COUNT 100 39#define DEFAULT_MAX_BODY_SIZE (35*1024*1024) 40#define MAX_TAG_SIZE 32 41#define MAX_FILTER_NAME 32 42#define MAX_FILTER_ARGS 255 43 44#define EXPAND_BUFFER 1024 45 46#define SMTPD_QUEUE_EXPIRY (4 * 24 * 60 * 60) 47#define SMTPD_SOCKET "/var/run/smtpd.sock" 48#ifndef SMTPD_NAME 49#define SMTPD_NAME "OpenSMTPD" 50#endif 51#define SMTPD_VERSION "5.4.4" 52#define SMTPD_SESSION_TIMEOUT 300 53#define SMTPD_BACKLOG 5 54 55#define PATH_SMTPCTL "/usr/sbin/smtpctl" 56 57#define PATH_OFFLINE "/offline" 58#define PATH_PURGE "/purge" 59#define PATH_TEMPORARY "/temporary" 60 61#define PATH_LIBEXEC "/usr/libexec/smtpd" 62 63 64/* 65 * RFC 5322 defines these characters as valid, some of them are 66 * potentially dangerous and need to be escaped. 67 */ 68#define MAILADDR_ALLOWED "!#$%&'*/?^`{|}~+-=_" 69#define MAILADDR_ESCAPE "!#$%&'*/?^`{|}~" 70 71 72#define F_STARTTLS 0x01 73#define F_SMTPS 0x02 74#define F_TLS_OPTIONAL 0x04 75#define F_SSL (F_STARTTLS | F_SMTPS) 76#define F_AUTH 0x08 77#define F_BACKUP 0x10 /* XXX - MUST BE SYNC-ED WITH RELAY_BACKUP */ 78#define F_STARTTLS_REQUIRE 0x20 79#define F_AUTH_REQUIRE 0x40 80#define F_LMTP 0x80 81#define F_MASK_SOURCE 0x100 82#define F_TLS_VERIFY 0x200 83#define F_EXT_DSN 0x400 84 85/* must match F_* for mta */ 86#define RELAY_STARTTLS 0x01 87#define RELAY_SMTPS 0x02 88#define RELAY_TLS_OPTIONAL 0x04 89#define RELAY_SSL (RELAY_STARTTLS | RELAY_SMTPS) 90#define RELAY_AUTH 0x08 91#define RELAY_BACKUP 0x10 /* XXX - MUST BE SYNC-ED WITH F_BACKUP */ 92#define RELAY_MX 0x20 93#define RELAY_LMTP 0x80 94#define RELAY_TLS_VERIFY 0x200 95 96#define MTA_EXT_DSN 0x400 97 98struct userinfo { 99 char username[LOGIN_NAME_MAX]; 100 char directory[PATH_MAX]; 101 uid_t uid; 102 gid_t gid; 103}; 104 105struct netaddr { 106 struct sockaddr_storage ss; 107 int bits; 108}; 109 110struct relayhost { 111 uint16_t flags; 112 char hostname[HOST_NAME_MAX+1]; 113 uint16_t port; 114 char pki_name[PATH_MAX]; 115 char authtable[PATH_MAX]; 116 char authlabel[PATH_MAX]; 117 char sourcetable[PATH_MAX]; 118 char heloname[HOST_NAME_MAX+1]; 119 char helotable[PATH_MAX]; 120}; 121 122struct credentials { 123 char username[LINE_MAX]; 124 char password[LINE_MAX]; 125}; 126 127struct destination { 128 char name[HOST_NAME_MAX+1]; 129}; 130 131struct source { 132 struct sockaddr_storage addr; 133}; 134 135struct addrname { 136 struct sockaddr_storage addr; 137 char name[HOST_NAME_MAX+1]; 138}; 139 140union lookup { 141 struct expand *expand; 142 struct credentials creds; 143 struct netaddr netaddr; 144 struct source source; 145 struct destination domain; 146 struct userinfo userinfo; 147 struct mailaddr mailaddr; 148 struct addrname addrname; 149}; 150 151/* 152 * Bump IMSG_VERSION whenever a change is made to enum imsg_type. 153 * This will ensure that we can never use a wrong version of smtpctl with smtpd. 154 */ 155#define IMSG_VERSION 11 156 157enum imsg_type { 158 IMSG_NONE, 159 160 IMSG_CTL_OK, 161 IMSG_CTL_FAIL, 162 163 IMSG_CTL_GET_DIGEST, 164 IMSG_CTL_GET_STATS, 165 IMSG_CTL_LIST_MESSAGES, 166 IMSG_CTL_LIST_ENVELOPES, 167 IMSG_CTL_MTA_SHOW_HOSTS, 168 IMSG_CTL_MTA_SHOW_RELAYS, 169 IMSG_CTL_MTA_SHOW_ROUTES, 170 IMSG_CTL_MTA_SHOW_HOSTSTATS, 171 IMSG_CTL_MTA_BLOCK, 172 IMSG_CTL_MTA_UNBLOCK, 173 IMSG_CTL_MTA_SHOW_BLOCK, 174 IMSG_CTL_PAUSE_EVP, 175 IMSG_CTL_PAUSE_MDA, 176 IMSG_CTL_PAUSE_MTA, 177 IMSG_CTL_PAUSE_SMTP, 178 IMSG_CTL_PROFILE, 179 IMSG_CTL_PROFILE_DISABLE, 180 IMSG_CTL_PROFILE_ENABLE, 181 IMSG_CTL_RESUME_EVP, 182 IMSG_CTL_RESUME_MDA, 183 IMSG_CTL_RESUME_MTA, 184 IMSG_CTL_RESUME_SMTP, 185 IMSG_CTL_RESUME_ROUTE, 186 IMSG_CTL_REMOVE, 187 IMSG_CTL_SCHEDULE, 188 IMSG_CTL_SHOW_STATUS, 189 IMSG_CTL_SHUTDOWN, 190 IMSG_CTL_TRACE_DISABLE, 191 IMSG_CTL_TRACE_ENABLE, 192 IMSG_CTL_UPDATE_TABLE, 193 IMSG_CTL_VERBOSE, 194 195 IMSG_CTL_SMTP_SESSION, 196 197 IMSG_CONF_START, 198 IMSG_CONF_END, 199 200 IMSG_STAT_INCREMENT, 201 IMSG_STAT_DECREMENT, 202 IMSG_STAT_SET, 203 204 IMSG_LKA_AUTHENTICATE, 205 IMSG_LKA_OPEN_FORWARD, 206 IMSG_LKA_ENVELOPE_SUBMIT, 207 IMSG_LKA_ENVELOPE_COMMIT, 208 209 IMSG_QUEUE_DELIVER, 210 IMSG_QUEUE_DELIVERY_OK, 211 IMSG_QUEUE_DELIVERY_TEMPFAIL, 212 IMSG_QUEUE_DELIVERY_PERMFAIL, 213 IMSG_QUEUE_DELIVERY_LOOP, 214 IMSG_QUEUE_ENVELOPE_ACK, 215 IMSG_QUEUE_ENVELOPE_COMMIT, 216 IMSG_QUEUE_ENVELOPE_REMOVE, 217 IMSG_QUEUE_ENVELOPE_SCHEDULE, 218 IMSG_QUEUE_ENVELOPE_SUBMIT, 219 IMSG_QUEUE_HOLDQ_HOLD, 220 IMSG_QUEUE_HOLDQ_RELEASE, 221 IMSG_QUEUE_MESSAGE_COMMIT, 222 IMSG_QUEUE_MESSAGE_ROLLBACK, 223 IMSG_QUEUE_SMTP_SESSION, 224 IMSG_QUEUE_TRANSFER, 225 226 IMSG_MDA_DELIVERY_OK, 227 IMSG_MDA_DELIVERY_TEMPFAIL, 228 IMSG_MDA_DELIVERY_PERMFAIL, 229 IMSG_MDA_DELIVERY_LOOP, 230 IMSG_MDA_DELIVERY_HOLD, 231 IMSG_MDA_DONE, 232 IMSG_MDA_FORK, 233 IMSG_MDA_HOLDQ_RELEASE, 234 IMSG_MDA_LOOKUP_USERINFO, 235 IMSG_MDA_KILL, 236 IMSG_MDA_OPEN_MESSAGE, 237 238 IMSG_MFA_SMTP_RESPONSE, 239 240 IMSG_MTA_DELIVERY_OK, 241 IMSG_MTA_DELIVERY_TEMPFAIL, 242 IMSG_MTA_DELIVERY_PERMFAIL, 243 IMSG_MTA_DELIVERY_LOOP, 244 IMSG_MTA_DELIVERY_HOLD, 245 IMSG_MTA_DNS_HOST, 246 IMSG_MTA_DNS_HOST_END, 247 IMSG_MTA_DNS_PTR, 248 IMSG_MTA_DNS_MX, 249 IMSG_MTA_DNS_MX_PREFERENCE, 250 IMSG_MTA_HOLDQ_RELEASE, 251 IMSG_MTA_LOOKUP_CREDENTIALS, 252 IMSG_MTA_LOOKUP_SOURCE, 253 IMSG_MTA_LOOKUP_HELO, 254 IMSG_MTA_OPEN_MESSAGE, 255 IMSG_MTA_SCHEDULE, 256 IMSG_MTA_SSL_INIT, 257 IMSG_MTA_SSL_VERIFY_CERT, 258 IMSG_MTA_SSL_VERIFY_CHAIN, 259 IMSG_MTA_SSL_VERIFY, 260 261 IMSG_SCHED_ENVELOPE_BOUNCE, 262 IMSG_SCHED_ENVELOPE_DELIVER, 263 IMSG_SCHED_ENVELOPE_EXPIRE, 264 IMSG_SCHED_ENVELOPE_INJECT, 265 IMSG_SCHED_ENVELOPE_REMOVE, 266 IMSG_SCHED_ENVELOPE_TRANSFER, 267 268 IMSG_SMTP_AUTHENTICATE, 269 IMSG_SMTP_DNS_PTR, 270 IMSG_SMTP_MESSAGE_COMMIT, 271 IMSG_SMTP_MESSAGE_CREATE, 272 IMSG_SMTP_MESSAGE_ROLLBACK, 273 IMSG_SMTP_MESSAGE_OPEN, 274 IMSG_SMTP_EXPAND_RCPT, 275 IMSG_SMTP_LOOKUP_HELO, 276 IMSG_SMTP_SSL_INIT, 277 IMSG_SMTP_SSL_VERIFY_CERT, 278 IMSG_SMTP_SSL_VERIFY_CHAIN, 279 IMSG_SMTP_SSL_VERIFY, 280 281 IMSG_SMTP_REQ_CONNECT, 282 IMSG_SMTP_REQ_HELO, 283 IMSG_SMTP_REQ_MAIL, 284 IMSG_SMTP_REQ_RCPT, 285 IMSG_SMTP_REQ_DATA, 286 IMSG_SMTP_REQ_EOM, 287 IMSG_SMTP_EVENT_RSET, 288 IMSG_SMTP_EVENT_COMMIT, 289 IMSG_SMTP_EVENT_ROLLBACK, 290 IMSG_SMTP_EVENT_DISCONNECT, 291 292 IMSG_CA_PRIVENC, 293 IMSG_CA_PRIVDEC 294}; 295 296enum blockmodes { 297 BM_NORMAL, 298 BM_NONBLOCK 299}; 300 301enum smtp_proc_type { 302 PROC_PARENT = 0, 303 PROC_LKA, 304 PROC_QUEUE, 305 PROC_CONTROL, 306 PROC_SCHEDULER, 307 PROC_PONY, 308 PROC_CA, 309 310 PROC_FILTER, 311 PROC_CLIENT, 312}; 313 314enum table_type { 315 T_NONE = 0, 316 T_DYNAMIC = 0x01, /* table with external source */ 317 T_LIST = 0x02, /* table holding a list */ 318 T_HASH = 0x04, /* table holding a hash table */ 319}; 320 321struct table { 322 char t_name[LINE_MAX]; 323 enum table_type t_type; 324 char t_config[PATH_MAX]; 325 326 struct dict t_dict; 327 328 void *t_handle; 329 struct table_backend *t_backend; 330 void *t_iter; 331}; 332 333struct table_backend { 334 const unsigned int services; 335 int (*config)(struct table *); 336 void *(*open)(struct table *); 337 int (*update)(struct table *); 338 void (*close)(void *); 339 int (*lookup)(void *, struct dict *, const char *, enum table_service, union lookup *); 340 int (*fetch)(void *, struct dict *, enum table_service, union lookup *); 341}; 342 343 344enum dest_type { 345 DEST_DOM, 346 DEST_VDOM 347}; 348 349enum action_type { 350 A_NONE, 351 A_RELAY, 352 A_RELAYVIA, 353 A_MAILDIR, 354 A_MBOX, 355 A_FILENAME, 356 A_MDA, 357 A_LMTP 358}; 359 360enum decision { 361 R_REJECT, 362 R_ACCEPT 363}; 364 365struct rule { 366 TAILQ_ENTRY(rule) r_entry; 367 enum decision r_decision; 368 uint8_t r_nottag; 369 char r_tag[MAX_TAG_SIZE]; 370 371 uint8_t r_notsources; 372 struct table *r_sources; 373 374 uint8_t r_notsenders; 375 struct table *r_senders; 376 377 uint8_t r_notrecipients; 378 struct table *r_recipients; 379 380 uint8_t r_notdestination; 381 enum dest_type r_desttype; 382 struct table *r_destination; 383 384 enum action_type r_action; 385 union rule_dest { 386 char buffer[EXPAND_BUFFER]; 387 struct relayhost relayhost; 388 } r_value; 389 390 struct mailaddr *r_as; 391 struct table *r_mapping; 392 struct table *r_userbase; 393 time_t r_qexpire; 394 uint8_t r_forwardonly; 395}; 396 397struct delivery_mda { 398 enum action_type method; 399 char usertable[PATH_MAX]; 400 char username[LOGIN_NAME_MAX]; 401 char buffer[EXPAND_BUFFER]; 402}; 403 404struct delivery_mta { 405 struct relayhost relay; 406}; 407 408enum bounce_type { 409 B_ERROR, 410 B_WARNING, 411 B_DSN 412}; 413 414enum dsn_ret { 415 DSN_RETFULL = 1, 416 DSN_RETHDRS 417}; 418 419struct delivery_bounce { 420 enum bounce_type type; 421 time_t delay; 422 time_t expire; 423 enum dsn_ret dsn_ret; 424 int mta_without_dsn; 425}; 426 427enum expand_type { 428 EXPAND_INVALID, 429 EXPAND_USERNAME, 430 EXPAND_FILENAME, 431 EXPAND_FILTER, 432 EXPAND_INCLUDE, 433 EXPAND_ADDRESS, 434 EXPAND_ERROR 435}; 436 437struct expandnode { 438 RB_ENTRY(expandnode) entry; 439 TAILQ_ENTRY(expandnode) tq_entry; 440 enum expand_type type; 441 int sameuser; 442 int alias; 443 struct rule *rule; 444 struct expandnode *parent; 445 unsigned int depth; 446 struct table *mapping; 447 struct table *userbase; 448 union { 449 /* 450 * user field handles both expansion user and system user 451 * so we MUST make it large enough to fit a mailaddr user 452 */ 453 char user[SMTPD_MAXLOCALPARTSIZE]; 454 char buffer[EXPAND_BUFFER]; 455 struct mailaddr mailaddr; 456 } u; 457}; 458 459struct expand { 460 RB_HEAD(expandtree, expandnode) tree; 461 TAILQ_HEAD(xnodes, expandnode) *queue; 462 int alias; 463 size_t nb_nodes; 464 struct rule *rule; 465 struct expandnode *parent; 466}; 467 468#define DSN_SUCCESS 0x01 469#define DSN_FAILURE 0x02 470#define DSN_DELAY 0x04 471#define DSN_NEVER 0x08 472 473#define DSN_ENVID_LEN 100 474 475#define SMTPD_ENVELOPE_VERSION 2 476struct envelope { 477 TAILQ_ENTRY(envelope) entry; 478 479 char tag[MAX_TAG_SIZE]; 480 481 uint32_t version; 482 uint64_t id; 483 enum envelope_flags flags; 484 485 char smtpname[HOST_NAME_MAX+1]; 486 char helo[HOST_NAME_MAX+1]; 487 char hostname[HOST_NAME_MAX+1]; 488 char errorline[LINE_MAX]; 489 struct sockaddr_storage ss; 490 491 struct mailaddr sender; 492 struct mailaddr rcpt; 493 struct mailaddr dest; 494 495 enum delivery_type type; 496 union { 497 struct delivery_mda mda; 498 struct delivery_mta mta; 499 struct delivery_bounce bounce; 500 } agent; 501 502 uint16_t retry; 503 time_t creation; 504 time_t expire; 505 time_t lasttry; 506 time_t nexttry; 507 time_t lastbounce; 508 509 struct mailaddr dsn_orcpt; 510 char dsn_envid[DSN_ENVID_LEN+1]; 511 uint8_t dsn_notify; 512 enum dsn_ret dsn_ret; 513 514 uint8_t esc_class; 515 uint8_t esc_code; 516}; 517 518struct listener { 519 uint16_t flags; 520 int fd; 521 struct sockaddr_storage ss; 522 in_port_t port; 523 struct timeval timeout; 524 struct event ev; 525 char pki_name[PATH_MAX]; 526 char tag[MAX_TAG_SIZE]; 527 char filter[PATH_MAX]; 528 char authtable[LINE_MAX]; 529 char hostname[HOST_NAME_MAX+1]; 530 char hostnametable[PATH_MAX]; 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 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_mda_max_session; 562 size_t sc_mda_max_user_session; 563 size_t sc_mda_task_hiwat; 564 size_t sc_mda_task_lowat; 565 size_t sc_mda_task_release; 566 567 size_t sc_mta_max_deferred; 568 569 size_t sc_scheduler_max_inflight; 570 size_t sc_scheduler_max_evp_batch_size; 571 size_t sc_scheduler_max_msg_batch_size; 572 size_t sc_scheduler_max_schedule; 573 574 int sc_qexpire; 575#define MAX_BOUNCE_WARN 4 576 time_t sc_bounce_warn[MAX_BOUNCE_WARN]; 577 char sc_hostname[HOST_NAME_MAX+1]; 578 struct stat_backend *sc_stat; 579 struct compress_backend *sc_comp; 580 581 time_t sc_uptime; 582 583 TAILQ_HEAD(listenerlist, listener) *sc_listeners; 584 585 TAILQ_HEAD(rulelist, rule) *sc_rules; 586 587 struct dict *sc_pki_dict; 588 struct dict *sc_ssl_dict; 589 590 struct dict *sc_tables_dict; /* keyed lookup */ 591 592 struct dict *sc_limits_dict; 593 594 struct dict sc_filters; 595 uint32_t filtermask; 596}; 597 598#define TRACE_DEBUG 0x0001 599#define TRACE_IMSG 0x0002 600#define TRACE_IO 0x0004 601#define TRACE_SMTP 0x0008 602#define TRACE_FILTERS 0x0010 603#define TRACE_MTA 0x0020 604#define TRACE_BOUNCE 0x0040 605#define TRACE_SCHEDULER 0x0080 606#define TRACE_LOOKUP 0x0100 607#define TRACE_STAT 0x0200 608#define TRACE_RULES 0x0400 609#define TRACE_MPROC 0x0800 610#define TRACE_EXPAND 0x1000 611#define TRACE_TABLES 0x2000 612#define TRACE_QUEUE 0x4000 613 614#define PROFILE_TOSTAT 0x0001 615#define PROFILE_IMSG 0x0002 616#define PROFILE_QUEUE 0x0004 617#define PROFILE_BUFFERS 0x0008 618 619struct forward_req { 620 uint64_t id; 621 uint8_t status; 622 623 char user[LOGIN_NAME_MAX]; 624 uid_t uid; 625 gid_t gid; 626 char directory[PATH_MAX]; 627}; 628 629struct deliver { 630 char to[PATH_MAX]; 631 char from[PATH_MAX]; 632 char dest[LINE_MAX]; 633 char user[LOGIN_NAME_MAX]; 634 short mode; 635 636 struct userinfo userinfo; 637}; 638 639#define MAX_FILTER_PER_CHAIN 16 640struct filter_conf { 641 int chain; 642 int done; 643 int argc; 644 char *name; 645 char *argv[MAX_FILTER_ARGS + 1]; 646 char *path; 647}; 648 649struct mta_host { 650 SPLAY_ENTRY(mta_host) entry; 651 struct sockaddr *sa; 652 char *ptrname; 653 int refcount; 654 size_t nconn; 655 time_t lastconn; 656 time_t lastptrquery; 657 658#define HOST_IGNORE 0x01 659 int flags; 660}; 661 662struct mta_mx { 663 TAILQ_ENTRY(mta_mx) entry; 664 struct mta_host *host; 665 int preference; 666}; 667 668struct mta_domain { 669 SPLAY_ENTRY(mta_domain) entry; 670 char *name; 671 int flags; 672 TAILQ_HEAD(, mta_mx) mxs; 673 int mxstatus; 674 int refcount; 675 size_t nconn; 676 time_t lastconn; 677 time_t lastmxquery; 678}; 679 680struct mta_source { 681 SPLAY_ENTRY(mta_source) entry; 682 struct sockaddr *sa; 683 int refcount; 684 size_t nconn; 685 time_t lastconn; 686}; 687 688struct mta_connector { 689 struct mta_source *source; 690 struct mta_relay *relay; 691 692#define CONNECTOR_ERROR_FAMILY 0x0001 693#define CONNECTOR_ERROR_SOURCE 0x0002 694#define CONNECTOR_ERROR_MX 0x0004 695#define CONNECTOR_ERROR_ROUTE_NET 0x0008 696#define CONNECTOR_ERROR_ROUTE_SMTP 0x0010 697#define CONNECTOR_ERROR_ROUTE 0x0018 698#define CONNECTOR_ERROR_BLOCKED 0x0020 699#define CONNECTOR_ERROR 0x00ff 700 701#define CONNECTOR_LIMIT_HOST 0x0100 702#define CONNECTOR_LIMIT_ROUTE 0x0200 703#define CONNECTOR_LIMIT_SOURCE 0x0400 704#define CONNECTOR_LIMIT_RELAY 0x0800 705#define CONNECTOR_LIMIT_CONN 0x1000 706#define CONNECTOR_LIMIT_DOMAIN 0x2000 707#define CONNECTOR_LIMIT 0xff00 708 709#define CONNECTOR_NEW 0x10000 710#define CONNECTOR_WAIT 0x20000 711 int flags; 712 713 int refcount; 714 size_t nconn; 715 time_t lastconn; 716}; 717 718struct mta_route { 719 SPLAY_ENTRY(mta_route) entry; 720 uint64_t id; 721 struct mta_source *src; 722 struct mta_host *dst; 723#define ROUTE_NEW 0x01 724#define ROUTE_RUNQ 0x02 725#define ROUTE_KEEPALIVE 0x04 726#define ROUTE_DISABLED 0xf0 727#define ROUTE_DISABLED_NET 0x10 728#define ROUTE_DISABLED_SMTP 0x20 729 int flags; 730 int nerror; 731 int penalty; 732 int refcount; 733 size_t nconn; 734 time_t lastconn; 735 time_t lastdisc; 736 time_t lastpenalty; 737}; 738 739struct mta_limits { 740 size_t maxconn_per_host; 741 size_t maxconn_per_route; 742 size_t maxconn_per_source; 743 size_t maxconn_per_connector; 744 size_t maxconn_per_relay; 745 size_t maxconn_per_domain; 746 747 time_t conndelay_host; 748 time_t conndelay_route; 749 time_t conndelay_source; 750 time_t conndelay_connector; 751 time_t conndelay_relay; 752 time_t conndelay_domain; 753 754 time_t discdelay_route; 755 756 size_t max_mail_per_session; 757 time_t sessdelay_transaction; 758 time_t sessdelay_keepalive; 759 760 size_t max_failures_per_session; 761 762 int family; 763 764 int task_hiwat; 765 int task_lowat; 766 int task_release; 767}; 768 769struct mta_relay { 770 SPLAY_ENTRY(mta_relay) entry; 771 uint64_t id; 772 773 struct mta_domain *domain; 774 struct mta_limits *limits; 775 int flags; 776 char *backupname; 777 int backuppref; 778 char *sourcetable; 779 uint16_t port; 780 char *pki_name; 781 char *authtable; 782 char *authlabel; 783 char *helotable; 784 char *heloname; 785 char *secret; 786 787 int state; 788 size_t ntask; 789 TAILQ_HEAD(, mta_task) tasks; 790 791 struct tree connectors; 792 size_t sourceloop; 793 time_t lastsource; 794 time_t nextsource; 795 796 int fail; 797 char *failstr; 798 799#define RELAY_WAIT_MX 0x01 800#define RELAY_WAIT_PREFERENCE 0x02 801#define RELAY_WAIT_SECRET 0x04 802#define RELAY_WAIT_LIMITS 0x08 803#define RELAY_WAIT_SOURCE 0x10 804#define RELAY_WAIT_CONNECTOR 0x20 805#define RELAY_WAITMASK 0x3f 806 int status; 807 808 int refcount; 809 size_t nconn; 810 size_t nconn_ready; 811 time_t lastconn; 812}; 813 814struct mta_envelope { 815 TAILQ_ENTRY(mta_envelope) entry; 816 uint64_t id; 817 uint64_t session; 818 time_t creation; 819 char *dest; 820 char *rcpt; 821 struct mta_task *task; 822 int delivery; 823 824 int ext; 825 char *dsn_orcpt; 826 char dsn_envid[DSN_ENVID_LEN+1]; 827 uint8_t dsn_notify; 828 enum dsn_ret dsn_ret; 829 830 char status[LINE_MAX]; 831}; 832 833struct mta_task { 834 TAILQ_ENTRY(mta_task) entry; 835 struct mta_relay *relay; 836 uint32_t msgid; 837 TAILQ_HEAD(, mta_envelope) envelopes; 838 char *sender; 839}; 840 841struct passwd; 842 843struct queue_backend { 844 int (*init)(struct passwd *, int, const char *); 845}; 846 847struct compress_backend { 848 size_t (*compress_chunk)(void *, size_t, void *, size_t); 849 size_t (*uncompress_chunk)(void *, size_t, void *, size_t); 850 int (*compress_file)(FILE *, FILE *); 851 int (*uncompress_file)(FILE *, FILE *); 852}; 853 854/* auth structures */ 855enum auth_type { 856 AUTH_BSD, 857 AUTH_PWD, 858}; 859 860struct auth_backend { 861 int (*authenticate)(char *, char *); 862}; 863 864 865/* delivery_backend */ 866struct delivery_backend { 867 int allow_root; 868 void (*open)(struct deliver *); 869}; 870 871struct scheduler_backend { 872 int (*init)(const char *); 873 874 int (*insert)(struct scheduler_info *); 875 size_t (*commit)(uint32_t); 876 size_t (*rollback)(uint32_t); 877 878 int (*update)(struct scheduler_info *); 879 int (*delete)(uint64_t); 880 int (*hold)(uint64_t, uint64_t); 881 int (*release)(int, uint64_t, int); 882 883 int (*batch)(int, int*, size_t*, uint64_t*, int*); 884 885 size_t (*messages)(uint32_t, uint32_t *, size_t); 886 size_t (*envelopes)(uint64_t, struct evpstate *, size_t); 887 int (*schedule)(uint64_t); 888 int (*remove)(uint64_t); 889 int (*suspend)(uint64_t); 890 int (*resume)(uint64_t); 891}; 892 893enum stat_type { 894 STAT_COUNTER, 895 STAT_TIMESTAMP, 896 STAT_TIMEVAL, 897 STAT_TIMESPEC, 898}; 899 900struct stat_value { 901 enum stat_type type; 902 union stat_v { 903 size_t counter; 904 time_t timestamp; 905 struct timeval tv; 906 struct timespec ts; 907 } u; 908}; 909 910#define STAT_KEY_SIZE 1024 911struct stat_kv { 912 void *iter; 913 char key[STAT_KEY_SIZE]; 914 struct stat_value val; 915}; 916 917struct stat_backend { 918 void (*init)(void); 919 void (*close)(void); 920 void (*increment)(const char *, size_t); 921 void (*decrement)(const char *, size_t); 922 void (*set)(const char *, const struct stat_value *); 923 int (*iter)(void **, char **, struct stat_value *); 924}; 925 926struct stat_digest { 927 time_t startup; 928 time_t timestamp; 929 930 size_t clt_connect; 931 size_t clt_disconnect; 932 933 size_t evp_enqueued; 934 size_t evp_dequeued; 935 936 size_t evp_expired; 937 size_t evp_removed; 938 size_t evp_bounce; 939 940 size_t dlv_ok; 941 size_t dlv_permfail; 942 size_t dlv_tempfail; 943 size_t dlv_loop; 944}; 945 946 947struct mproc { 948 pid_t pid; 949 char *name; 950 int proc; 951 void (*handler)(struct mproc *, struct imsg *); 952 struct imsgbuf imsgbuf; 953 954 char *m_buf; 955 size_t m_alloc; 956 size_t m_pos; 957 uint32_t m_type; 958 uint32_t m_peerid; 959 pid_t m_pid; 960 int m_fd; 961 962 int enable; 963 short events; 964 struct event ev; 965 void *data; 966 967 off_t msg_in; 968 off_t msg_out; 969 off_t bytes_in; 970 off_t bytes_out; 971 size_t bytes_queued; 972 size_t bytes_queued_max; 973}; 974 975struct msg { 976 const uint8_t *pos; 977 const uint8_t *end; 978}; 979 980extern enum smtp_proc_type smtpd_process; 981 982extern int verbose; 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 1028enum ca_resp_status { 1029 CA_OK, 1030 CA_FAIL 1031}; 1032 1033struct ca_cert_req_msg { 1034 uint64_t reqid; 1035 char name[HOST_NAME_MAX+1]; 1036}; 1037 1038struct ca_cert_resp_msg { 1039 uint64_t reqid; 1040 enum ca_resp_status status; 1041 char *cert; 1042 off_t cert_len; 1043}; 1044 1045struct ca_vrfy_req_msg { 1046 uint64_t reqid; 1047 char pkiname[HOST_NAME_MAX+1]; 1048 unsigned char *cert; 1049 off_t cert_len; 1050 size_t n_chain; 1051 size_t chain_offset; 1052 unsigned char **chain_cert; 1053 off_t *chain_cert_len; 1054}; 1055 1056struct ca_vrfy_resp_msg { 1057 uint64_t reqid; 1058 enum ca_resp_status status; 1059}; 1060 1061 1062/* aliases.c */ 1063int aliases_get(struct expand *, const char *); 1064int aliases_virtual_check(struct table *, const struct mailaddr *); 1065int aliases_virtual_get(struct expand *, const struct mailaddr *); 1066int alias_parse(struct expandnode *, const char *); 1067 1068 1069/* auth.c */ 1070struct auth_backend *auth_backend_lookup(enum auth_type); 1071 1072 1073/* bounce.c */ 1074void bounce_add(uint64_t); 1075void bounce_fd(int); 1076 1077 1078/* ca.c */ 1079pid_t ca(void); 1080int ca_X509_verify(void *, void *, const char *, const char *, const char **); 1081void ca_imsg(struct mproc *, struct imsg *); 1082void ca_init(void); 1083void ca_engine_init(void); 1084 1085/* compress_backend.c */ 1086struct compress_backend *compress_backend_lookup(const char *); 1087size_t compress_chunk(void *, size_t, void *, size_t); 1088size_t uncompress_chunk(void *, size_t, void *, size_t); 1089int compress_file(FILE *, FILE *); 1090int uncompress_file(FILE *, FILE *); 1091 1092/* config.c */ 1093#define PURGE_LISTENERS 0x01 1094#define PURGE_TABLES 0x02 1095#define PURGE_RULES 0x04 1096#define PURGE_PKI 0x08 1097#define PURGE_PKI_KEYS 0x10 1098#define PURGE_EVERYTHING 0x0f 1099void purge_config(uint8_t); 1100void init_pipes(void); 1101void config_process(enum smtp_proc_type); 1102void config_peer(enum smtp_proc_type); 1103void config_done(void); 1104 1105 1106/* control.c */ 1107pid_t control(void); 1108int control_create_socket(void); 1109 1110 1111/* crypto.c */ 1112int crypto_setup(const char *, size_t); 1113int crypto_encrypt_file(FILE *, FILE *); 1114int crypto_decrypt_file(FILE *, FILE *); 1115size_t crypto_encrypt_buffer(const char *, size_t, char *, size_t); 1116size_t crypto_decrypt_buffer(const char *, size_t, char *, size_t); 1117 1118 1119/* delivery.c */ 1120struct delivery_backend *delivery_backend_lookup(enum action_type); 1121 1122 1123/* dns.c */ 1124void dns_imsg(struct mproc *, struct imsg *); 1125 1126 1127/* enqueue.c */ 1128int enqueue(int, char **); 1129 1130 1131/* envelope.c */ 1132void envelope_set_errormsg(struct envelope *, char *, ...); 1133void envelope_set_esc_class(struct envelope *, enum enhanced_status_class); 1134void envelope_set_esc_code(struct envelope *, enum enhanced_status_code); 1135int envelope_load_buffer(struct envelope *, const char *, size_t); 1136int envelope_dump_buffer(const struct envelope *, char *, size_t); 1137 1138 1139/* expand.c */ 1140int expand_cmp(struct expandnode *, struct expandnode *); 1141void expand_insert(struct expand *, struct expandnode *); 1142struct expandnode *expand_lookup(struct expand *, struct expandnode *); 1143void expand_clear(struct expand *); 1144void expand_free(struct expand *); 1145int expand_line(struct expand *, const char *, int); 1146int expand_to_text(struct expand *, char *, size_t); 1147RB_PROTOTYPE(expandtree, expandnode, nodes, expand_cmp); 1148 1149 1150/* forward.c */ 1151int forwards_get(int, struct expand *); 1152 1153 1154/* imsgproc.c */ 1155void imsgproc_init(void); 1156struct imsgproc *imsgproc_fork(const char *, const char *, 1157 void (*)(struct imsg *, void *), void *); 1158void imsgproc_set_read(struct imsgproc *); 1159void imsgproc_set_write(struct imsgproc *); 1160void imsgproc_set_read_write(struct imsgproc *); 1161void imsgproc_reset_callback(struct imsgproc *, void (*)(struct imsg *, void *), void *); 1162 1163/* limit.c */ 1164void limit_mta_set_defaults(struct mta_limits *); 1165int limit_mta_set(struct mta_limits *, const char*, int64_t); 1166 1167/* lka.c */ 1168pid_t lka(void); 1169 1170 1171/* lka_session.c */ 1172void lka_session(uint64_t, struct envelope *); 1173void lka_session_forward_reply(struct forward_req *, int); 1174 1175 1176/* log.c */ 1177void vlog(int, const char *, va_list); 1178void logit(int, const char *, ...) __attribute__((format (printf, 2, 3))); 1179 1180 1181/* mda.c */ 1182void mda_postfork(void); 1183void mda_postprivdrop(void); 1184void mda_imsg(struct mproc *, struct imsg *); 1185 1186 1187/* mproc.c */ 1188int mproc_fork(struct mproc *, const char*, char **); 1189void mproc_init(struct mproc *, int); 1190void mproc_clear(struct mproc *); 1191void mproc_enable(struct mproc *); 1192void mproc_disable(struct mproc *); 1193void mproc_event_add(struct mproc *); 1194void m_compose(struct mproc *, uint32_t, uint32_t, pid_t, int, void *, size_t); 1195void m_composev(struct mproc *, uint32_t, uint32_t, pid_t, int, 1196 const struct iovec *, int); 1197void m_forward(struct mproc *, struct imsg *); 1198void m_create(struct mproc *, uint32_t, uint32_t, pid_t, int); 1199void m_add(struct mproc *, const void *, size_t); 1200void m_add_int(struct mproc *, int); 1201void m_add_u32(struct mproc *, uint32_t); 1202void m_add_size(struct mproc *, size_t); 1203void m_add_time(struct mproc *, time_t); 1204void m_add_string(struct mproc *, const char *); 1205void m_add_data(struct mproc *, const void *, size_t); 1206void m_add_evpid(struct mproc *, uint64_t); 1207void m_add_msgid(struct mproc *, uint32_t); 1208void m_add_id(struct mproc *, uint64_t); 1209void m_add_sockaddr(struct mproc *, const struct sockaddr *); 1210void m_add_mailaddr(struct mproc *, const struct mailaddr *); 1211void m_add_envelope(struct mproc *, const struct envelope *); 1212void m_add_params(struct mproc *, struct dict *); 1213void m_close(struct mproc *); 1214void m_flush(struct mproc *); 1215 1216void m_msg(struct msg *, struct imsg *); 1217int m_is_eom(struct msg *); 1218void m_end(struct msg *); 1219void m_get_int(struct msg *, int *); 1220void m_get_size(struct msg *, size_t *); 1221void m_get_u32(struct msg *, uint32_t *); 1222void m_get_time(struct msg *, time_t *); 1223void m_get_string(struct msg *, const char **); 1224void m_get_data(struct msg *, const void **, size_t *); 1225void m_get_evpid(struct msg *, uint64_t *); 1226void m_get_msgid(struct msg *, uint32_t *); 1227void m_get_id(struct msg *, uint64_t *); 1228void m_get_sockaddr(struct msg *, struct sockaddr *); 1229void m_get_mailaddr(struct msg *, struct mailaddr *); 1230void m_get_envelope(struct msg *, struct envelope *); 1231void m_get_params(struct msg *, struct dict *); 1232void m_clear_params(struct dict *); 1233 1234 1235/* mta.c */ 1236void mta_postfork(void); 1237void mta_postprivdrop(void); 1238void mta_imsg(struct mproc *, struct imsg *); 1239void mta_route_ok(struct mta_relay *, struct mta_route *); 1240void mta_route_error(struct mta_relay *, struct mta_route *); 1241void mta_route_down(struct mta_relay *, struct mta_route *); 1242void mta_route_collect(struct mta_relay *, struct mta_route *); 1243void mta_source_error(struct mta_relay *, struct mta_route *, const char *); 1244void mta_delivery_log(struct mta_envelope *, const char *, const char *, int, const char *); 1245void mta_delivery_notify(struct mta_envelope *); 1246struct mta_task *mta_route_next_task(struct mta_relay *, struct mta_route *); 1247const char *mta_host_to_text(struct mta_host *); 1248const char *mta_relay_to_text(struct mta_relay *); 1249 1250/* mta_session.c */ 1251void mta_session(struct mta_relay *, struct mta_route *); 1252void mta_session_imsg(struct mproc *, struct imsg *); 1253 1254 1255/* parse.y */ 1256int parse_config(struct smtpd *, const char *, int); 1257int cmdline_symset(char *); 1258 1259 1260/* queue.c */ 1261pid_t queue(void); 1262void queue_flow_control(void); 1263 1264 1265/* queue_backend.c */ 1266uint32_t queue_generate_msgid(void); 1267uint64_t queue_generate_evpid(uint32_t); 1268int queue_init(const char *, int); 1269int queue_close(void); 1270int queue_message_create(uint32_t *); 1271int queue_message_delete(uint32_t); 1272int queue_message_commit(uint32_t); 1273int queue_message_fd_r(uint32_t); 1274int queue_message_fd_rw(uint32_t); 1275int queue_message_corrupt(uint32_t); 1276int queue_envelope_create(struct envelope *); 1277int queue_envelope_delete(uint64_t); 1278int queue_envelope_load(uint64_t, struct envelope *); 1279int queue_envelope_update(struct envelope *); 1280int queue_envelope_walk(struct envelope *); 1281 1282 1283/* ruleset.c */ 1284struct rule *ruleset_match(const struct envelope *); 1285 1286 1287/* scheduler.c */ 1288pid_t scheduler(void); 1289 1290 1291/* scheduler_bakend.c */ 1292struct scheduler_backend *scheduler_backend_lookup(const char *); 1293void scheduler_info(struct scheduler_info *, struct envelope *); 1294 1295 1296/* pony.c */ 1297pid_t pony(void); 1298void pony_imsg(struct mproc *, struct imsg *); 1299 1300 1301/* smtp.c */ 1302void smtp_postfork(void); 1303void smtp_postprivdrop(void); 1304void smtp_imsg(struct mproc *, struct imsg *); 1305void smtp_configure(void); 1306void smtp_collect(void); 1307 1308 1309/* smtp_session.c */ 1310int smtp_session(struct listener *, int, const struct sockaddr_storage *, 1311 const char *); 1312void smtp_session_imsg(struct mproc *, struct imsg *); 1313 1314 1315/* smtpd.c */ 1316void imsg_dispatch(struct mproc *, struct imsg *); 1317void post_fork(int); 1318const char *proc_name(enum smtp_proc_type); 1319const char *proc_title(enum smtp_proc_type); 1320const char *imsg_to_str(int); 1321void log_imsg(int, int, struct imsg *); 1322int fork_proc_backend(const char *, const char *, const char *); 1323 1324 1325/* ssl_smtpd.c */ 1326void *ssl_mta_init(void *, char *, off_t); 1327void *ssl_smtp_init(void *, void *); 1328 1329 1330/* stat_backend.c */ 1331struct stat_backend *stat_backend_lookup(const char *); 1332void stat_increment(const char *, size_t); 1333void stat_decrement(const char *, size_t); 1334void stat_set(const char *, const struct stat_value *); 1335struct stat_value *stat_counter(size_t); 1336struct stat_value *stat_timestamp(time_t); 1337struct stat_value *stat_timeval(struct timeval *); 1338struct stat_value *stat_timespec(struct timespec *); 1339 1340 1341/* table.c */ 1342struct table *table_find(const char *, const char *); 1343struct table *table_create(const char *, const char *, const char *, 1344 const char *); 1345int table_config(struct table *); 1346int table_open(struct table *); 1347int table_update(struct table *); 1348void table_close(struct table *); 1349int table_check_use(struct table *, uint32_t, uint32_t); 1350int table_check_type(struct table *, uint32_t); 1351int table_check_service(struct table *, uint32_t); 1352int table_lookup(struct table *, struct dict *, const char *, enum table_service, 1353 union lookup *); 1354int table_fetch(struct table *, struct dict *, enum table_service, union lookup *); 1355void table_destroy(struct table *); 1356void table_add(struct table *, const char *, const char *); 1357int table_domain_match(const char *, const char *); 1358int table_netaddr_match(const char *, const char *); 1359int table_mailaddr_match(const char *, const char *); 1360void table_open_all(void); 1361void table_dump_all(void); 1362void table_close_all(void); 1363int table_parse_lookup(enum table_service, const char *, const char *, 1364 union lookup *); 1365 1366 1367/* to.c */ 1368int email_to_mailaddr(struct mailaddr *, char *); 1369int text_to_netaddr(struct netaddr *, const char *); 1370int text_to_mailaddr(struct mailaddr *, const char *); 1371int text_to_relayhost(struct relayhost *, const char *); 1372int text_to_userinfo(struct userinfo *, const char *); 1373int text_to_credentials(struct credentials *, const char *); 1374int text_to_expandnode(struct expandnode *, const char *); 1375uint64_t text_to_evpid(const char *); 1376uint32_t text_to_msgid(const char *); 1377const char *sa_to_text(const struct sockaddr *); 1378const char *ss_to_text(const struct sockaddr_storage *); 1379const char *time_to_text(time_t); 1380const char *duration_to_text(time_t); 1381const char *relayhost_to_text(const struct relayhost *); 1382const char *rule_to_text(struct rule *); 1383const char *sockaddr_to_text(struct sockaddr *); 1384const char *mailaddr_to_text(const struct mailaddr *); 1385const char *expandnode_to_text(struct expandnode *); 1386 1387/* util.c */ 1388typedef struct arglist arglist; 1389struct arglist { 1390 char **list; 1391 uint num; 1392 uint nalloc; 1393}; 1394void addargs(arglist *, char *, ...) 1395 __attribute__((format(printf, 2, 3))); 1396int bsnprintf(char *, size_t, const char *, ...) 1397 __attribute__((format (printf, 3, 4))); 1398int mkdirs(char *, mode_t); 1399int safe_fclose(FILE *); 1400int hostname_match(const char *, const char *); 1401int valid_localpart(const char *); 1402int valid_domainpart(const char *); 1403int secure_file(int, char *, char *, uid_t, int); 1404int lowercase(char *, const char *, size_t); 1405void xlowercase(char *, const char *, size_t); 1406int uppercase(char *, const char *, size_t); 1407uint64_t generate_uid(void); 1408int availdesc(void); 1409int ckdir(const char *, mode_t, uid_t, gid_t, int); 1410int rmtree(char *, int); 1411int mvpurge(char *, char *); 1412int mktmpfile(void); 1413const char *parse_smtp_response(char *, size_t, char **, int *); 1414void *xmalloc(size_t, const char *); 1415void *xcalloc(size_t, size_t, const char *); 1416char *xstrdup(const char *, const char *); 1417void *xmemdup(const void *, size_t, const char *); 1418char *strip(char *); 1419void iobuf_xinit(struct iobuf *, size_t, size_t, const char *); 1420void iobuf_xfqueue(struct iobuf *, const char *, const char *, ...); 1421void log_envelope(const struct envelope *, const char *, const char *, 1422 const char *); 1423void session_socket_blockmode(int, enum blockmodes); 1424void session_socket_no_linger(int); 1425int session_socket_error(int); 1426int getmailname(char *, size_t); 1427int base64_encode(unsigned char const *, size_t, char *, size_t); 1428int base64_decode(char const *, unsigned char *, size_t); 1429 1430 1431/* waitq.c */ 1432int waitq_wait(void *, void (*)(void *, void *, void *), void *); 1433void waitq_run(void *, void *); 1434 1435/* runq.c */ 1436struct runq; 1437 1438int runq_init(struct runq **, void (*)(struct runq *, void *)); 1439int runq_schedule(struct runq *, time_t, void (*)(struct runq *, void *), void *); 1440int runq_delay(struct runq *, unsigned int, void (*)(struct runq *, void *), void *); 1441int runq_cancel(struct runq *, void (*)(struct runq *, void *), void *); 1442int runq_pending(struct runq *, void (*)(struct runq *, void *), void *, time_t *); 1443int runq_next(struct runq *, void (**)(struct runq *, void *), void **, time_t *); 1444