1 /* 2 * Copyright (c) 1998-2011 Sendmail, Inc. and its suppliers. 3 * All rights reserved. 4 * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved. 5 * Copyright (c) 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * By using this file, you agree to the terms and conditions set 9 * forth in the LICENSE file which can be found at the top level of 10 * the sendmail distribution. 11 */ 12 13 /* 14 ** SENDMAIL.H -- MTA-specific definitions for sendmail. 15 */ 16 17 #ifndef _SENDMAIL_H 18 # define _SENDMAIL_H 1 19 20 #ifndef MILTER 21 # define MILTER 1 /* turn on MILTER by default */ 22 #endif /* MILTER */ 23 24 #ifdef _DEFINE 25 # define EXTERN 26 #else /* _DEFINE */ 27 # define EXTERN extern 28 #endif /* _DEFINE */ 29 30 31 #include <unistd.h> 32 33 #include <stddef.h> 34 #include <stdlib.h> 35 #include <stdio.h> 36 #include <ctype.h> 37 #include <setjmp.h> 38 #include <string.h> 39 #include <time.h> 40 # ifdef EX_OK 41 # undef EX_OK /* for SVr4.2 SMP */ 42 # endif /* EX_OK */ 43 44 #include "sendmail/sendmail.h" 45 46 /* profiling? */ 47 #if MONCONTROL 48 # define SM_PROF(x) moncontrol(x) 49 #else /* MONCONTROL */ 50 # define SM_PROF(x) 51 #endif /* MONCONTROL */ 52 53 #ifdef _DEFINE 54 # ifndef lint 55 SM_UNUSED(static char SmailId[]) = "@(#)$Id: sendmail.h,v 8.1089 2011/03/15 23:14:36 ca Exp $"; 56 # endif /* ! lint */ 57 #endif /* _DEFINE */ 58 59 #include "bf.h" 60 #include "timers.h" 61 #include <sm/exc.h> 62 #include <sm/heap.h> 63 #include <sm/debug.h> 64 #include <sm/rpool.h> 65 #include <sm/io.h> 66 #include <sm/path.h> 67 #include <sm/signal.h> 68 #include <sm/clock.h> 69 #include <sm/mbdb.h> 70 #include <sm/errstring.h> 71 #include <sm/sysexits.h> 72 #include <sm/shm.h> 73 #include <sm/misc.h> 74 75 #ifdef LOG 76 # include <syslog.h> 77 #endif /* LOG */ 78 79 80 81 # if NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 82 # include <sys/socket.h> 83 # endif /* NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 */ 84 # if NETUNIX 85 # include <sys/un.h> 86 # endif /* NETUNIX */ 87 # if NETINET || NETINET6 88 # include <netinet/in.h> 89 # endif /* NETINET || NETINET6 */ 90 # if NETINET6 91 /* 92 ** There is no standard yet for IPv6 includes. 93 ** Specify OS specific implementation in conf.h 94 */ 95 # endif /* NETINET6 */ 96 # if NETISO 97 # include <netiso/iso.h> 98 # endif /* NETISO */ 99 # if NETNS 100 # include <netns/ns.h> 101 # endif /* NETNS */ 102 # if NETX25 103 # include <netccitt/x25.h> 104 # endif /* NETX25 */ 105 106 # if NAMED_BIND 107 # include <arpa/nameser.h> 108 # ifdef NOERROR 109 # undef NOERROR /* avoid <sys/streams.h> conflict */ 110 # endif /* NOERROR */ 111 # include <resolv.h> 112 # else /* NAMED_BIND */ 113 # undef SM_SET_H_ERRNO 114 # define SM_SET_H_ERRNO(err) 115 # endif /* NAMED_BIND */ 116 117 # if HESIOD 118 # include <hesiod.h> 119 # if !defined(HES_ER_OK) || defined(HESIOD_INTERFACES) 120 # define HESIOD_INIT /* support for the new interface */ 121 # endif /* !defined(HES_ER_OK) || defined(HESIOD_INTERFACES) */ 122 # endif /* HESIOD */ 123 124 #if STARTTLS 125 # include <openssl/ssl.h> 126 # if !TLS_NO_RSA 127 # define RSA_KEYLENGTH 512 128 # endif /* !TLS_NO_RSA */ 129 #endif /* STARTTLS */ 130 131 #if SASL /* include the sasl include files if we have them */ 132 133 134 # if SASL == 2 || SASL >= 20000 135 # include <sasl/sasl.h> 136 # include <sasl/saslplug.h> 137 # include <sasl/saslutil.h> 138 # if SASL_VERSION_FULL < 0x020119 139 typedef int (*sasl_callback_ft)(void); 140 # endif 141 # else /* SASL == 2 || SASL >= 20000 */ 142 # include <sasl.h> 143 # include <saslutil.h> 144 typedef int (*sasl_callback_ft)(void); 145 # endif /* SASL == 2 || SASL >= 20000 */ 146 # if defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) 147 # define SASL_VERSION (SASL_VERSION_MAJOR * 10000) + (SASL_VERSION_MINOR * 100) + SASL_VERSION_STEP 148 # if SASL == 1 || SASL == 2 149 # undef SASL 150 # define SASL SASL_VERSION 151 # else /* SASL == 1 || SASL == 2 */ 152 # if SASL != SASL_VERSION 153 ERROR README: -DSASL (SASL) does not agree with the version of the CYRUS_SASL library (SASL_VERSION) 154 ERROR README: see README! 155 # endif /* SASL != SASL_VERSION */ 156 # endif /* SASL == 1 || SASL == 2 */ 157 # else /* defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) */ 158 # if SASL == 1 159 ERROR README: please set -DSASL to the version of the CYRUS_SASL library 160 ERROR README: see README! 161 # endif /* SASL == 1 */ 162 # endif /* defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) */ 163 #endif /* SASL */ 164 165 /* 166 ** Following are "sort of" configuration constants, but they should 167 ** be pretty solid on most architectures today. They have to be 168 ** defined after <arpa/nameser.h> because some versions of that 169 ** file also define them. In all cases, we can't use sizeof because 170 ** some systems (e.g., Crays) always treat everything as being at 171 ** least 64 bits. 172 */ 173 174 #ifndef INADDRSZ 175 # define INADDRSZ 4 /* size of an IPv4 address in bytes */ 176 #endif /* ! INADDRSZ */ 177 #ifndef IN6ADDRSZ 178 # define IN6ADDRSZ 16 /* size of an IPv6 address in bytes */ 179 #endif /* ! IN6ADDRSZ */ 180 #ifndef INT16SZ 181 # define INT16SZ 2 /* size of a 16 bit integer in bytes */ 182 #endif /* ! INT16SZ */ 183 #ifndef INT32SZ 184 # define INT32SZ 4 /* size of a 32 bit integer in bytes */ 185 #endif /* ! INT32SZ */ 186 #ifndef INADDR_LOOPBACK 187 # define INADDR_LOOPBACK 0x7f000001 /* loopback address */ 188 #endif /* ! INADDR_LOOPBACK */ 189 190 /* 191 ** Error return from inet_addr(3), in case not defined in /usr/include. 192 */ 193 194 #ifndef INADDR_NONE 195 # define INADDR_NONE 0xffffffff 196 #endif /* ! INADDR_NONE */ 197 198 199 /* (f)open() modes for queue files */ 200 # define QF_O_EXTRA 0 201 202 203 /* 204 ** An 'argument class' describes the storage allocation status 205 ** of an object pointed to by an argument to a function. 206 */ 207 208 typedef enum 209 { 210 A_HEAP, /* the storage was allocated by malloc, and the 211 * ownership of the storage is ceded by the caller 212 * to the called function. */ 213 A_TEMP, /* The storage is temporary, and is only guaranteed 214 * to be valid for the duration of the function call. */ 215 A_PERM /* The storage is 'permanent': this might mean static 216 * storage, or rpool storage. */ 217 } ARGCLASS_T; 218 219 /* forward references for prototypes */ 220 typedef struct envelope ENVELOPE; 221 typedef struct mailer MAILER; 222 typedef struct queuegrp QUEUEGRP; 223 224 /* 225 ** Address structure. 226 ** Addresses are stored internally in this structure. 227 */ 228 229 struct address 230 { 231 char *q_paddr; /* the printname for the address */ 232 char *q_user; /* user name */ 233 char *q_ruser; /* real user name, or NULL if q_user */ 234 char *q_host; /* host name */ 235 struct mailer *q_mailer; /* mailer to use */ 236 unsigned long q_flags; /* status flags, see below */ 237 uid_t q_uid; /* user-id of receiver (if known) */ 238 gid_t q_gid; /* group-id of receiver (if known) */ 239 char *q_home; /* home dir (local mailer only) */ 240 char *q_fullname; /* full name if known */ 241 struct address *q_next; /* chain */ 242 struct address *q_alias; /* address this results from */ 243 char *q_owner; /* owner of q_alias */ 244 struct address *q_tchain; /* temporary use chain */ 245 #if PIPELINING 246 struct address *q_pchain; /* chain for pipelining */ 247 #endif /* PIPELINING */ 248 char *q_finalrcpt; /* Final-Recipient: DSN header */ 249 char *q_orcpt; /* ORCPT parameter from RCPT TO: line */ 250 char *q_status; /* status code for DSNs */ 251 char *q_rstatus; /* remote status message for DSNs */ 252 time_t q_statdate; /* date of status messages */ 253 char *q_statmta; /* MTA generating q_rstatus */ 254 short q_state; /* address state, see below */ 255 char *q_signature; /* MX-based sorting value */ 256 int q_qgrp; /* index into queue groups */ 257 int q_qdir; /* queue directory inside group */ 258 char *q_message; /* error message */ 259 }; 260 261 typedef struct address ADDRESS; 262 263 /* bit values for q_flags */ 264 #define QGOODUID 0x00000001 /* the q_uid q_gid fields are good */ 265 #define QPRIMARY 0x00000002 /* set from RCPT or argv */ 266 #define QNOTREMOTE 0x00000004 /* address not for remote forwarding */ 267 #define QSELFREF 0x00000008 /* this address references itself */ 268 #define QBOGUSSHELL 0x00000010 /* user has no valid shell listed */ 269 #define QUNSAFEADDR 0x00000020 /* address acquired via unsafe path */ 270 #define QPINGONSUCCESS 0x00000040 /* give return on successful delivery */ 271 #define QPINGONFAILURE 0x00000080 /* give return on failure */ 272 #define QPINGONDELAY 0x00000100 /* give return on message delay */ 273 #define QHASNOTIFY 0x00000200 /* propagate notify parameter */ 274 #define QRELAYED 0x00000400 /* DSN: relayed to non-DSN aware sys */ 275 #define QEXPANDED 0x00000800 /* DSN: undergone list expansion */ 276 #define QDELIVERED 0x00001000 /* DSN: successful final delivery */ 277 #define QDELAYED 0x00002000 /* DSN: message delayed */ 278 #define QALIAS 0x00004000 /* expanded alias */ 279 #define QBYTRACE 0x00008000 /* DeliverBy: trace */ 280 #define QBYNDELAY 0x00010000 /* DeliverBy: notify, delay */ 281 #define QBYNRELAY 0x00020000 /* DeliverBy: notify, relayed */ 282 #define QTHISPASS 0x40000000 /* temp: address set this pass */ 283 #define QRCPTOK 0x80000000 /* recipient() processed address */ 284 285 #define Q_PINGFLAGS (QPINGONSUCCESS|QPINGONFAILURE|QPINGONDELAY) 286 287 /* values for q_state */ 288 #define QS_OK 0 /* address ok (for now)/not yet tried */ 289 #define QS_SENT 1 /* good address, delivery complete */ 290 #define QS_BADADDR 2 /* illegal address */ 291 #define QS_QUEUEUP 3 /* save address in queue */ 292 #define QS_RETRY 4 /* retry delivery for next MX */ 293 #define QS_VERIFIED 5 /* verified, but not expanded */ 294 295 /* 296 ** Notice: all of the following values are variations of QS_DONTSEND. 297 ** If new states are added, they must be inserted in the proper place! 298 ** See the macro definition of QS_IS_DEAD() down below. 299 */ 300 301 #define QS_DONTSEND 6 /* don't send to this address */ 302 #define QS_EXPANDED 7 /* expanded */ 303 #define QS_SENDER 8 /* message sender (MeToo) */ 304 #define QS_CLONED 9 /* addr cloned to split envelope */ 305 #define QS_DISCARDED 10 /* rcpt discarded (EF_DISCARD) */ 306 #define QS_REPLACED 11 /* maplocaluser()/UserDB replaced */ 307 #define QS_REMOVED 12 /* removed (removefromlist()) */ 308 #define QS_DUPLICATE 13 /* duplicate suppressed */ 309 #define QS_INCLUDED 14 /* :include: delivery */ 310 #define QS_FATALERR 15 /* fatal error, don't deliver */ 311 312 /* address state testing primitives */ 313 #define QS_IS_OK(s) ((s) == QS_OK) 314 #define QS_IS_SENT(s) ((s) == QS_SENT) 315 #define QS_IS_BADADDR(s) ((s) == QS_BADADDR) 316 #define QS_IS_QUEUEUP(s) ((s) == QS_QUEUEUP) 317 #define QS_IS_RETRY(s) ((s) == QS_RETRY) 318 #define QS_IS_VERIFIED(s) ((s) == QS_VERIFIED) 319 #define QS_IS_EXPANDED(s) ((s) == QS_EXPANDED) 320 #define QS_IS_REMOVED(s) ((s) == QS_REMOVED) 321 #define QS_IS_UNDELIVERED(s) ((s) == QS_OK || \ 322 (s) == QS_QUEUEUP || \ 323 (s) == QS_RETRY || \ 324 (s) == QS_VERIFIED) 325 #define QS_IS_UNMARKED(s) ((s) == QS_OK || \ 326 (s) == QS_RETRY) 327 #define QS_IS_SENDABLE(s) ((s) == QS_OK || \ 328 (s) == QS_QUEUEUP || \ 329 (s) == QS_RETRY) 330 #define QS_IS_ATTEMPTED(s) ((s) == QS_QUEUEUP || \ 331 (s) == QS_RETRY || \ 332 (s) == QS_SENT || \ 333 (s) == QS_DISCARDED) 334 #define QS_IS_DEAD(s) ((s) >= QS_DONTSEND) 335 #define QS_IS_TEMPFAIL(s) ((s) == QS_QUEUEUP || (s) == QS_RETRY) 336 337 #define NULLADDR ((ADDRESS *) NULL) 338 339 extern ADDRESS NullAddress; /* a null (template) address [main.c] */ 340 341 /* functions */ 342 extern void cataddr __P((char **, char **, char *, int, int, bool)); 343 extern char *crackaddr __P((char *, ENVELOPE *)); 344 extern bool emptyaddr __P((ADDRESS *)); 345 extern ADDRESS *getctladdr __P((ADDRESS *)); 346 extern int include __P((char *, bool, ADDRESS *, ADDRESS **, int, ENVELOPE *)); 347 extern bool invalidaddr __P((char *, char *, bool)); 348 extern ADDRESS *parseaddr __P((char *, ADDRESS *, int, int, char **, 349 ENVELOPE *, bool)); 350 extern char **prescan __P((char *, int, char[], int, char **, unsigned char *, bool)); 351 extern void printaddr __P((SM_FILE_T *, ADDRESS *, bool)); 352 extern ADDRESS *recipient __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 353 extern char *remotename __P((char *, MAILER *, int, int *, ENVELOPE *)); 354 extern int rewrite __P((char **, int, int, ENVELOPE *, int)); 355 extern bool sameaddr __P((ADDRESS *, ADDRESS *)); 356 extern int sendtolist __P((char *, ADDRESS *, ADDRESS **, int, ENVELOPE *)); 357 #if MILTER 358 extern int removefromlist __P((char *, ADDRESS **, ENVELOPE *)); 359 #endif /* MILTER */ 360 extern void setsender __P((char *, ENVELOPE *, char **, int, bool)); 361 typedef void esmtp_args_F __P((ADDRESS *, char *, char *, ENVELOPE *)); 362 extern void parse_esmtp_args __P((ENVELOPE *, ADDRESS *, char *, char *, 363 char *, char *args[], esmtp_args_F)); 364 extern esmtp_args_F mail_esmtp_args; 365 extern esmtp_args_F rcpt_esmtp_args; 366 extern void reset_mail_esmtp_args __P((ENVELOPE *)); 367 368 /* macro to simplify the common call to rewrite() */ 369 #define REWRITE(pvp, rs, env) rewrite(pvp, rs, 0, env, MAXATOM) 370 371 /* 372 ** Token Tables for prescan 373 */ 374 375 extern unsigned char ExtTokenTab[256]; /* external strings */ 376 extern unsigned char IntTokenTab[256]; /* internal strings */ 377 378 379 /* 380 ** Mailer definition structure. 381 ** Every mailer known to the system is declared in this 382 ** structure. It defines the pathname of the mailer, some 383 ** flags associated with it, and the argument vector to 384 ** pass to it. The flags are defined in conf.c 385 ** 386 ** The argument vector is expanded before actual use. All 387 ** words except the first are passed through the macro 388 ** processor. 389 */ 390 391 struct mailer 392 { 393 char *m_name; /* symbolic name of this mailer */ 394 char *m_mailer; /* pathname of the mailer to use */ 395 char *m_mtatype; /* type of this MTA */ 396 char *m_addrtype; /* type for addresses */ 397 char *m_diagtype; /* type for diagnostics */ 398 BITMAP256 m_flags; /* status flags, see below */ 399 short m_mno; /* mailer number internally */ 400 short m_nice; /* niceness to run at (mostly for prog) */ 401 char **m_argv; /* template argument vector */ 402 short m_sh_rwset; /* rewrite set: sender header addresses */ 403 short m_se_rwset; /* rewrite set: sender envelope addresses */ 404 short m_rh_rwset; /* rewrite set: recipient header addresses */ 405 short m_re_rwset; /* rewrite set: recipient envelope addresses */ 406 char *m_eol; /* end of line string */ 407 long m_maxsize; /* size limit on message to this mailer */ 408 int m_linelimit; /* max # characters per line */ 409 int m_maxdeliveries; /* max deliveries per mailer connection */ 410 char *m_execdir; /* directory to chdir to before execv */ 411 char *m_rootdir; /* directory to chroot to before execv */ 412 uid_t m_uid; /* UID to run as */ 413 gid_t m_gid; /* GID to run as */ 414 char *m_defcharset; /* default character set */ 415 time_t m_wait; /* timeout to wait for end */ 416 int m_maxrcpt; /* max recipients per envelope client-side */ 417 short m_qgrp; /* queue group for this mailer */ 418 }; 419 420 /* bits for m_flags */ 421 #define M_ESMTP 'a' /* run Extended SMTP */ 422 #define M_ALIASABLE 'A' /* user can be LHS of an alias */ 423 #define M_BLANKEND 'b' /* ensure blank line at end of message */ 424 #define M_STRIPBACKSL 'B' /* strip all leading backslashes from user */ 425 #define M_NOCOMMENT 'c' /* don't include comment part of address */ 426 #define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ 427 #define M_NOBRACKET 'd' /* never angle bracket envelope route-addrs */ 428 /* 'D' CF: include Date: */ 429 #define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ 430 #define M_ESCFROM 'E' /* escape From lines to >From */ 431 #define M_FOPT 'f' /* mailer takes picky -f flag */ 432 /* 'F' CF: include From: or Resent-From: */ 433 #define M_NO_NULL_FROM 'g' /* sender of errors should be $g */ 434 #define M_HST_UPPER 'h' /* preserve host case distinction */ 435 #define M_PREHEAD 'H' /* MAIL11V3: preview headers */ 436 #define M_UDBENVELOPE 'i' /* do udbsender rewriting on envelope */ 437 #define M_INTERNAL 'I' /* SMTP to another sendmail site */ 438 #define M_UDBRECIPIENT 'j' /* do udbsender rewriting on recipient lines */ 439 #define M_NOLOOPCHECK 'k' /* don't check for loops in HELO command */ 440 #define M_CHUNKING 'K' /* CHUNKING: reserved for future use */ 441 #define M_LOCALMAILER 'l' /* delivery is to this host */ 442 #define M_LIMITS 'L' /* must enforce SMTP line limits */ 443 #define M_MUSER 'm' /* can handle multiple users at once */ 444 /* 'M' CF: include Message-Id: */ 445 #define M_NHDR 'n' /* don't insert From line */ 446 #define M_MANYSTATUS 'N' /* MAIL11V3: DATA returns multi-status */ 447 #define M_RUNASRCPT 'o' /* always run mailer as recipient */ 448 #define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ 449 /* 'P' CF: include Return-Path: */ 450 #define M_VRFY250 'q' /* VRFY command returns 250 instead of 252 */ 451 #define M_ROPT 'r' /* mailer takes picky -r flag */ 452 #define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */ 453 #define M_STRIPQ 's' /* strip quote chars from user/host */ 454 #define M_SPECIFIC_UID 'S' /* run as specific uid/gid */ 455 #define M_USR_UPPER 'u' /* preserve user case distinction */ 456 #define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ 457 #define M_CONTENT_LEN 'v' /* add Content-Length: header (SVr4) */ 458 /* 'V' UIUC: !-relativize all addresses */ 459 #define M_HASPWENT 'w' /* check for /etc/passwd entry */ 460 #define M_NOHOSTSTAT 'W' /* ignore long term host status information */ 461 /* 'x' CF: include Full-Name: */ 462 #define M_XDOT 'X' /* use hidden-dot algorithm */ 463 #define M_LMTP 'z' /* run Local Mail Transport Protocol */ 464 #define M_DIALDELAY 'Z' /* apply dial delay sleeptime */ 465 #define M_NOMX '0' /* turn off MX lookups */ 466 #define M_NONULLS '1' /* don't send null bytes */ 467 #define M_FSMTP '2' /* force SMTP (no ESMTP even if offered) */ 468 #define M_EBCDIC '3' /* extend Q-P encoding for EBCDIC */ 469 #define M_TRYRULESET5 '5' /* use ruleset 5 after local aliasing */ 470 #define M_7BITHDRS '6' /* strip headers to 7 bits even in 8 bit path */ 471 #define M_7BITS '7' /* use 7-bit path */ 472 #define M_8BITS '8' /* force "just send 8" behaviour */ 473 #define M_MAKE8BIT '9' /* convert 7 -> 8 bit if appropriate */ 474 #define M_CHECKINCLUDE ':' /* check for :include: files */ 475 #define M_CHECKPROG '|' /* check for |program addresses */ 476 #define M_CHECKFILE '/' /* check for /file addresses */ 477 #define M_CHECKUDB '@' /* user can be user database key */ 478 #define M_CHECKHDIR '~' /* SGI: check for valid home directory */ 479 #define M_HOLD '%' /* Hold delivery until ETRN/-qI/-qR/-qS */ 480 #define M_PLUS '+' /* Reserved: Used in mc for adding new flags */ 481 #define M_MINUS '-' /* Reserved: Used in mc for removing flags */ 482 483 /* functions */ 484 extern void initerrmailers __P((void)); 485 extern void makemailer __P((char *)); 486 extern void makequeue __P((char *, bool)); 487 extern void runqueueevent __P((int)); 488 #if _FFR_QUEUE_RUN_PARANOIA 489 extern bool checkqueuerunner __P((void)); 490 #endif /* _FFR_QUEUE_RUN_PARANOIA */ 491 492 EXTERN MAILER *FileMailer; /* ptr to *file* mailer */ 493 EXTERN MAILER *InclMailer; /* ptr to *include* mailer */ 494 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 495 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 496 EXTERN MAILER *Mailer[MAXMAILERS + 1]; 497 498 /* 499 ** Queue group definition structure. 500 ** Every queue group known to the system is declared in this structure. 501 ** It defines the basic pathname of the queue group, some flags 502 ** associated with it, and the argument vector to pass to it. 503 */ 504 505 struct qpaths_s 506 { 507 char *qp_name; /* name of queue dir, relative path */ 508 short qp_subdirs; /* use subdirs? */ 509 short qp_fsysidx; /* file system index of this directory */ 510 # if SM_CONF_SHM 511 int qp_idx; /* index into array for queue information */ 512 # endif /* SM_CONF_SHM */ 513 }; 514 515 typedef struct qpaths_s QPATHS; 516 517 struct queuegrp 518 { 519 char *qg_name; /* symbolic name of this queue group */ 520 521 /* 522 ** For now this is the same across all queue groups. 523 ** Otherwise we have to play around with chdir(). 524 */ 525 526 char *qg_qdir; /* common component of queue directory */ 527 short qg_index; /* queue number internally, index in Queue[] */ 528 int qg_maxqrun; /* max # of jobs in 1 queuerun */ 529 int qg_numqueues; /* number of queues in this queue */ 530 531 /* 532 ** qg_queueintvl == 0 denotes that no individual value is used. 533 ** Whatever accesses this must deal with "<= 0" as 534 ** "not set, use appropriate default". 535 */ 536 537 time_t qg_queueintvl; /* interval for queue runs */ 538 QPATHS *qg_qpaths; /* list of queue directories */ 539 BITMAP256 qg_flags; /* status flags, see below */ 540 short qg_nice; /* niceness for queue run */ 541 int qg_wgrp; /* Assigned to this work group */ 542 int qg_maxlist; /* max items in work queue for this group */ 543 int qg_curnum; /* current number of queue for queue runs */ 544 int qg_maxrcpt; /* max recipients per envelope, 0==no limit */ 545 546 time_t qg_nextrun; /* time for next queue runs */ 547 #if _FFR_QUEUE_GROUP_SORTORDER 548 short qg_sortorder; /* how do we sort this queuerun */ 549 #endif /* _FFR_QUEUE_GROUP_SORTORDER */ 550 #if 0 551 long qg_wkrcptfact; /* multiplier for # recipients -> priority */ 552 long qg_qfactor; /* slope of queue function */ 553 bool qg_doqueuerun; /* XXX flag is it time to do a queuerun */ 554 #endif /* 0 */ 555 }; 556 557 /* bits for qg_flags (XXX: unused as of now) */ 558 #define QD_DEFINED ((char) 1) /* queue group has been defined */ 559 #define QD_FORK 'f' /* fork queue runs */ 560 561 extern void filesys_update __P((void)); 562 #if _FFR_ANY_FREE_FS 563 extern bool filesys_free __P((long)); 564 #endif /* _FFR_ANY_FREE_FS */ 565 566 #if SASL 567 /* 568 ** SASL 569 */ 570 571 /* lines in authinfo file or index into SASL_AI_T */ 572 # define SASL_WRONG (-1) 573 # define SASL_USER 0 /* authorization id (user) */ 574 # define SASL_AUTHID 1 /* authentication id */ 575 # define SASL_PASSWORD 2 /* password fuer authid */ 576 # define SASL_DEFREALM 3 /* realm to use */ 577 # define SASL_MECHLIST 4 /* list of mechanisms to try */ 578 # define SASL_ID_REALM 5 /* authid@defrealm */ 579 580 /* 581 ** Current mechanism; this is just used to convey information between 582 ** invocation of SASL callback functions. 583 ** It must be last in the list, because it's not allocated by us 584 ** and hence we don't free() it. 585 */ 586 # define SASL_MECH 6 587 # define SASL_ENTRIES 7 /* number of entries in array */ 588 589 # define SASL_USER_BIT (1 << SASL_USER) 590 # define SASL_AUTHID_BIT (1 << SASL_AUTHID) 591 # define SASL_PASSWORD_BIT (1 << SASL_PASSWORD) 592 # define SASL_DEFREALM_BIT (1 << SASL_DEFREALM) 593 # define SASL_MECHLIST_BIT (1 << SASL_MECHLIST) 594 595 /* authenticated? */ 596 # define SASL_NOT_AUTH 0 /* not authenticated */ 597 # define SASL_PROC_AUTH 1 /* in process of authenticating */ 598 # define SASL_IS_AUTH 2 /* authenticated */ 599 600 /* SASL options */ 601 # define SASL_AUTH_AUTH 0x1000 /* use auth= only if authenticated */ 602 # if SASL >= 20101 603 # define SASL_SEC_MASK SASL_SEC_MAXIMUM /* mask for SASL_SEC_* values: sasl.h */ 604 # else /* SASL >= 20101 */ 605 # define SASL_SEC_MASK 0x0fff /* mask for SASL_SEC_* values: sasl.h */ 606 # if (SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 || \ 607 (SASL_SEC_NOACTIVE & SASL_SEC_MASK) == 0 || \ 608 (SASL_SEC_NODICTIONARY & SASL_SEC_MASK) == 0 || \ 609 (SASL_SEC_FORWARD_SECRECY & SASL_SEC_MASK) == 0 || \ 610 (SASL_SEC_NOANONYMOUS & SASL_SEC_MASK) == 0 || \ 611 (SASL_SEC_PASS_CREDENTIALS & SASL_SEC_MASK) == 0 612 ERROR: change SASL_SEC_MASK_ notify sendmail.org! 613 # endif /* SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 ... */ 614 # endif /* SASL >= 20101 */ 615 # define MAXOUTLEN 8192 /* length of output buffer, should be 2^n */ 616 617 /* functions */ 618 extern char *intersect __P((char *, char *, SM_RPOOL_T *)); 619 extern char *iteminlist __P((char *, char *, char *)); 620 # if SASL >= 20000 621 extern int proxy_policy __P((sasl_conn_t *, void *, const char *, unsigned, const char *, unsigned, const char *, unsigned, struct propctx *)); 622 extern int safesaslfile __P((void *, const char *, sasl_verify_type_t)); 623 # else /* SASL >= 20000 */ 624 extern int proxy_policy __P((void *, const char *, const char *, const char **, const char **)); 625 # if SASL > 10515 626 extern int safesaslfile __P((void *, char *, int)); 627 # else /* SASL > 10515 */ 628 extern int safesaslfile __P((void *, char *)); 629 # endif /* SASL > 10515 */ 630 # endif /* SASL >= 20000 */ 631 extern void stop_sasl_client __P((void)); 632 633 /* structure to store authinfo */ 634 typedef char *SASL_AI_T[SASL_ENTRIES]; 635 636 EXTERN char *AuthMechanisms; /* AUTH mechanisms */ 637 EXTERN char *AuthRealm; /* AUTH realm */ 638 EXTERN char *SASLInfo; /* file with AUTH info */ 639 EXTERN int SASLOpts; /* options for SASL */ 640 EXTERN int MaxSLBits; /* max. encryption bits for SASL */ 641 #endif /* SASL */ 642 643 /* 644 ** Structure to store macros. 645 */ 646 typedef struct 647 { 648 SM_RPOOL_T *mac_rpool; /* resource pool */ 649 BITMAP256 mac_allocated; /* storage has been alloc()? */ 650 char *mac_table[MAXMACROID + 1]; /* macros */ 651 } MACROS_T; 652 653 EXTERN MACROS_T GlobalMacros; 654 655 /* 656 ** Information about currently open connections to mailers, or to 657 ** hosts that we have looked up recently. 658 */ 659 660 #define MCI struct mailer_con_info 661 662 MCI 663 { 664 unsigned long mci_flags; /* flag bits, see below */ 665 short mci_errno; /* error number on last connection */ 666 short mci_herrno; /* h_errno from last DNS lookup */ 667 short mci_exitstat; /* exit status from last connection */ 668 short mci_state; /* SMTP state */ 669 int mci_deliveries; /* delivery attempts for connection */ 670 long mci_maxsize; /* max size this server will accept */ 671 SM_FILE_T *mci_in; /* input side of connection */ 672 SM_FILE_T *mci_out; /* output side of connection */ 673 pid_t mci_pid; /* process id of subordinate proc */ 674 char *mci_phase; /* SMTP phase string */ 675 struct mailer *mci_mailer; /* ptr to the mailer for this conn */ 676 char *mci_host; /* host name */ 677 char *mci_status; /* DSN status to be copied to addrs */ 678 char *mci_rstatus; /* SMTP status to be copied to addrs */ 679 time_t mci_lastuse; /* last usage time */ 680 SM_FILE_T *mci_statfile; /* long term status file */ 681 char *mci_heloname; /* name to use as HELO arg */ 682 long mci_min_by; /* minimum DELIVERBY */ 683 bool mci_retryrcpt; /* tempfail for at least one rcpt */ 684 char *mci_tolist; /* list of valid recipients */ 685 SM_RPOOL_T *mci_rpool; /* resource pool */ 686 #if PIPELINING 687 int mci_okrcpts; /* number of valid recipients */ 688 ADDRESS *mci_nextaddr; /* next address for pipelined status */ 689 #endif /* PIPELINING */ 690 #if SASL 691 SASL_AI_T mci_sai; /* authentication info */ 692 bool mci_sasl_auth; /* authenticated? */ 693 int mci_sasl_string_len; 694 char *mci_sasl_string; /* sasl reply string */ 695 char *mci_saslcap; /* SASL list of mechanisms */ 696 sasl_conn_t *mci_conn; /* SASL connection */ 697 #endif /* SASL */ 698 #if STARTTLS 699 SSL *mci_ssl; /* SSL connection */ 700 #endif /* STARTTLS */ 701 MACROS_T mci_macro; /* macro definitions */ 702 }; 703 704 705 /* flag bits */ 706 #define MCIF_VALID 0x00000001 /* this entry is valid */ 707 /* 0x00000002 unused, was MCIF_TEMP */ 708 #define MCIF_CACHED 0x00000004 /* currently in open cache */ 709 #define MCIF_ESMTP 0x00000008 /* this host speaks ESMTP */ 710 #define MCIF_EXPN 0x00000010 /* EXPN command supported */ 711 #define MCIF_SIZE 0x00000020 /* SIZE option supported */ 712 #define MCIF_8BITMIME 0x00000040 /* BODY=8BITMIME supported */ 713 #define MCIF_7BIT 0x00000080 /* strip this message to 7 bits */ 714 /* 0x00000100 unused, was MCIF_MULTSTAT: MAIL11V3: handles MULT status */ 715 #define MCIF_INHEADER 0x00000200 /* currently outputing header */ 716 #define MCIF_CVT8TO7 0x00000400 /* convert from 8 to 7 bits */ 717 #define MCIF_DSN 0x00000800 /* DSN extension supported */ 718 #define MCIF_8BITOK 0x00001000 /* OK to send 8 bit characters */ 719 #define MCIF_CVT7TO8 0x00002000 /* convert from 7 to 8 bits */ 720 #define MCIF_INMIME 0x00004000 /* currently reading MIME header */ 721 #define MCIF_AUTH 0x00008000 /* AUTH= supported */ 722 #define MCIF_AUTHACT 0x00010000 /* SASL (AUTH) active */ 723 #define MCIF_ENHSTAT 0x00020000 /* ENHANCEDSTATUSCODES supported */ 724 #define MCIF_PIPELINED 0x00040000 /* PIPELINING supported */ 725 #define MCIF_VERB 0x00080000 /* VERB supported */ 726 #if STARTTLS 727 #define MCIF_TLS 0x00100000 /* STARTTLS supported */ 728 #define MCIF_TLSACT 0x00200000 /* STARTTLS active */ 729 #else /* STARTTLS */ 730 #define MCIF_TLS 0 731 #define MCIF_TLSACT 0 732 #endif /* STARTTLS */ 733 #define MCIF_DLVR_BY 0x00400000 /* DELIVERBY */ 734 #if _FFR_IGNORE_EXT_ON_HELO 735 # define MCIF_HELO 0x00800000 /* we used HELO: ignore extensions */ 736 #endif /* _FFR_IGNORE_EXT_ON_HELO */ 737 #define MCIF_INLONGLINE 0x01000000 /* in the middle of a long line */ 738 #define MCIF_AUTH2 0x02000000 /* got 2 AUTH lines */ 739 #define MCIF_ONLY_EHLO 0x10000000 /* use only EHLO in smtpinit */ 740 741 #define MCIF_EXTENS (MCIF_EXPN | MCIF_SIZE | MCIF_8BITMIME | MCIF_DSN | MCIF_8BITOK | MCIF_AUTH | MCIF_ENHSTAT | MCIF_TLS | MCIF_AUTH2) 742 743 /* states */ 744 #define MCIS_CLOSED 0 /* no traffic on this connection */ 745 #define MCIS_OPENING 1 /* sending initial protocol */ 746 #define MCIS_OPEN 2 /* open, initial protocol sent */ 747 #define MCIS_MAIL 3 /* MAIL command sent */ 748 #define MCIS_RCPT 4 /* RCPT commands being sent */ 749 #define MCIS_DATA 5 /* DATA command sent */ 750 #define MCIS_QUITING 6 /* running quit protocol */ 751 #define MCIS_SSD 7 /* service shutting down */ 752 #define MCIS_ERROR 8 /* I/O error on connection */ 753 754 /* functions */ 755 extern void mci_cache __P((MCI *)); 756 extern void mci_close __P((MCI *, char *where)); 757 extern void mci_dump __P((SM_FILE_T *, MCI *, bool)); 758 extern void mci_dump_all __P((SM_FILE_T *, bool)); 759 extern void mci_flush __P((bool, MCI *)); 760 extern void mci_clr_extensions __P((MCI *)); 761 extern MCI *mci_get __P((char *, MAILER *)); 762 extern int mci_lock_host __P((MCI *)); 763 extern bool mci_match __P((char *, MAILER *)); 764 extern int mci_print_persistent __P((char *, char *)); 765 extern int mci_purge_persistent __P((char *, char *)); 766 extern MCI **mci_scan __P((MCI *)); 767 extern void mci_setstat __P((MCI *, int, char *, char *)); 768 extern void mci_store_persistent __P((MCI *)); 769 extern int mci_traverse_persistent __P((int (*)(char *, char *), char *)); 770 extern void mci_unlock_host __P((MCI *)); 771 772 EXTERN int MaxMciCache; /* maximum entries in MCI cache */ 773 EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ 774 EXTERN time_t MciInfoTimeout; /* how long 'til we retry down hosts */ 775 776 /* 777 ** Header structure. 778 ** This structure is used internally to store header items. 779 */ 780 781 struct header 782 { 783 char *h_field; /* the name of the field */ 784 char *h_value; /* the value of that field */ 785 struct header *h_link; /* the next header */ 786 unsigned char h_macro; /* include header if macro defined */ 787 unsigned long h_flags; /* status bits, see below */ 788 BITMAP256 h_mflags; /* m_flags bits needed */ 789 }; 790 791 typedef struct header HDR; 792 793 /* 794 ** Header information structure. 795 ** Defined in conf.c, this struct declares the header fields 796 ** that have some magic meaning. 797 */ 798 799 struct hdrinfo 800 { 801 char *hi_field; /* the name of the field */ 802 unsigned long hi_flags; /* status bits, see below */ 803 char *hi_ruleset; /* validity check ruleset */ 804 }; 805 806 extern struct hdrinfo HdrInfo[]; 807 808 /* bits for h_flags and hi_flags */ 809 #define H_EOH 0x00000001 /* field terminates header */ 810 #define H_RCPT 0x00000002 /* contains recipient addresses */ 811 #define H_DEFAULT 0x00000004 /* if another value is found, drop this */ 812 #define H_RESENT 0x00000008 /* this address is a "Resent-..." address */ 813 #define H_CHECK 0x00000010 /* check h_mflags against m_flags */ 814 #define H_ACHECK 0x00000020 /* ditto, but always (not just default) */ 815 #define H_FORCE 0x00000040 /* force this field, even if default */ 816 #define H_TRACE 0x00000080 /* this field contains trace information */ 817 #define H_FROM 0x00000100 /* this is a from-type field */ 818 #define H_VALID 0x00000200 /* this field has a validated value */ 819 #define H_RECEIPTTO 0x00000400 /* field has return receipt info */ 820 #define H_ERRORSTO 0x00000800 /* field has error address info */ 821 #define H_CTE 0x00001000 /* field is a content-transfer-encoding */ 822 #define H_CTYPE 0x00002000 /* this is a content-type field */ 823 #define H_BCC 0x00004000 /* Bcc: header: strip value or delete */ 824 #define H_ENCODABLE 0x00008000 /* field can be RFC 1522 encoded */ 825 #define H_STRIPCOMM 0x00010000 /* header check: strip comments */ 826 #define H_BINDLATE 0x00020000 /* only expand macros at deliver */ 827 #define H_USER 0x00040000 /* header came from the user/SMTP */ 828 829 /* bits for chompheader() */ 830 #define CHHDR_DEF 0x0001 /* default header */ 831 #define CHHDR_CHECK 0x0002 /* call ruleset for header */ 832 #define CHHDR_USER 0x0004 /* header from user */ 833 #define CHHDR_QUEUE 0x0008 /* header from queue file */ 834 835 /* functions */ 836 extern void addheader __P((char *, char *, int, ENVELOPE *, bool)); 837 extern unsigned long chompheader __P((char *, int, HDR **, ENVELOPE *)); 838 extern bool commaize __P((HDR *, char *, bool, MCI *, ENVELOPE *, int)); 839 extern HDR *copyheader __P((HDR *, SM_RPOOL_T *)); 840 extern void eatheader __P((ENVELOPE *, bool, bool)); 841 extern char *hvalue __P((char *, HDR *)); 842 extern void insheader __P((int, char *, char *, int, ENVELOPE *, bool)); 843 extern bool isheader __P((char *)); 844 extern bool putfromline __P((MCI *, ENVELOPE *)); 845 extern void setupheaders __P((void)); 846 847 /* 848 ** Performance monitoring 849 */ 850 851 #define TIMERS struct sm_timers 852 853 TIMERS 854 { 855 TIMER ti_overall; /* the whole process */ 856 }; 857 858 859 #define PUSHTIMER(l, t) { if (tTd(98, l)) pushtimer(&t); } 860 #define POPTIMER(l, t) { if (tTd(98, l)) poptimer(&t); } 861 862 /* 863 ** Envelope structure. 864 ** This structure defines the message itself. There is usually 865 ** only one of these -- for the message that we originally read 866 ** and which is our primary interest -- but other envelopes can 867 ** be generated during processing. For example, error messages 868 ** will have their own envelope. 869 */ 870 871 struct envelope 872 { 873 HDR *e_header; /* head of header list */ 874 long e_msgpriority; /* adjusted priority of this message */ 875 time_t e_ctime; /* time message appeared in the queue */ 876 char *e_to; /* (list of) target person(s) */ 877 ADDRESS e_from; /* the person it is from */ 878 char *e_sender; /* e_from.q_paddr w comments stripped */ 879 char **e_fromdomain; /* the domain part of the sender */ 880 ADDRESS *e_sendqueue; /* list of message recipients */ 881 ADDRESS *e_errorqueue; /* the queue for error responses */ 882 883 /* 884 ** Overflow detection is based on < 0, so don't change this 885 ** to unsigned. We don't use unsigned and == ULONG_MAX because 886 ** some libc's don't have strtoul(), see mail_esmtp_args(). 887 */ 888 889 long e_msgsize; /* size of the message in bytes */ 890 char *e_msgid; /* message id (for logging) */ 891 unsigned long e_flags; /* flags, see below */ 892 int e_nrcpts; /* number of recipients */ 893 short e_class; /* msg class (priority, junk, etc.) */ 894 short e_hopcount; /* number of times processed */ 895 short e_nsent; /* number of sends since checkpoint */ 896 short e_sendmode; /* message send mode */ 897 short e_errormode; /* error return mode */ 898 short e_timeoutclass; /* message timeout class */ 899 bool (*e_puthdr)__P((MCI *, HDR *, ENVELOPE *, int)); 900 /* function to put header of message */ 901 bool (*e_putbody)__P((MCI *, ENVELOPE *, char *)); 902 /* function to put body of message */ 903 ENVELOPE *e_parent; /* the message this one encloses */ 904 ENVELOPE *e_sibling; /* the next envelope of interest */ 905 char *e_bodytype; /* type of message body */ 906 SM_FILE_T *e_dfp; /* data file */ 907 char *e_id; /* code for this entry in queue */ 908 #if _FFR_SESSID 909 char *e_sessid; /* session ID for this envelope */ 910 #endif /* _FFR_SESSID */ 911 int e_qgrp; /* queue group (index into queues) */ 912 int e_qdir; /* index into queue directories */ 913 int e_dfqgrp; /* data file queue group index */ 914 int e_dfqdir; /* data file queue directory index */ 915 int e_xfqgrp; /* queue group (index into queues) */ 916 int e_xfqdir; /* index into queue directories (xf) */ 917 SM_FILE_T *e_xfp; /* transcript file */ 918 SM_FILE_T *e_lockfp; /* the lock file for this message */ 919 char *e_message; /* error message; readonly; NULL, 920 * or allocated from e_rpool */ 921 char *e_statmsg; /* stat msg (changes per delivery). 922 * readonly. NULL or allocated from 923 * e_rpool. */ 924 char *e_quarmsg; /* why envelope is quarantined */ 925 char e_qfletter; /* queue file letter on disk */ 926 char *e_msgboundary; /* MIME-style message part boundary */ 927 char *e_origrcpt; /* original recipient (one only) */ 928 char *e_envid; /* envelope id from MAIL FROM: line */ 929 char *e_status; /* DSN status for this message */ 930 time_t e_dtime; /* time of last delivery attempt */ 931 int e_ntries; /* number of delivery attempts */ 932 dev_t e_dfdev; /* data file device (crash recovery) */ 933 ino_t e_dfino; /* data file inode (crash recovery) */ 934 MACROS_T e_macro; /* macro definitions */ 935 MCI *e_mci; /* connection info */ 936 char *e_auth_param; /* readonly; NULL or static storage or 937 * allocated from e_rpool */ 938 TIMERS e_timers; /* per job timers */ 939 long e_deliver_by; /* deliver by */ 940 int e_dlvr_flag; /* deliver by flag */ 941 SM_RPOOL_T *e_rpool; /* resource pool for this envelope */ 942 unsigned int e_features; /* server features */ 943 #if _FFR_MILTER_ENHSC 944 #define ENHSC_LEN 11 945 char e_enhsc[ENHSC_LEN]; /* enhanced status code */ 946 #endif /* _FFR_MILTER_ENHSC */ 947 }; 948 949 /* values for e_flags */ 950 #define EF_OLDSTYLE 0x00000001L /* use spaces (not commas) in hdrs */ 951 #define EF_INQUEUE 0x00000002L /* this message is fully queued */ 952 #define EF_NO_BODY_RETN 0x00000004L /* omit message body on error */ 953 #define EF_CLRQUEUE 0x00000008L /* disk copy is no longer needed */ 954 #define EF_SENDRECEIPT 0x00000010L /* send a return receipt */ 955 #define EF_FATALERRS 0x00000020L /* fatal errors occurred */ 956 #define EF_DELETE_BCC 0x00000040L /* delete Bcc: headers entirely */ 957 #define EF_RESPONSE 0x00000080L /* this is an error or return receipt */ 958 #define EF_RESENT 0x00000100L /* this message is being forwarded */ 959 #define EF_VRFYONLY 0x00000200L /* verify only (don't expand aliases) */ 960 #define EF_WARNING 0x00000400L /* warning message has been sent */ 961 #define EF_QUEUERUN 0x00000800L /* this envelope is from queue */ 962 #define EF_GLOBALERRS 0x00001000L /* treat errors as global */ 963 #define EF_PM_NOTIFY 0x00002000L /* send return mail to postmaster */ 964 #define EF_METOO 0x00004000L /* send to me too */ 965 #define EF_LOGSENDER 0x00008000L /* need to log the sender */ 966 #define EF_NORECEIPT 0x00010000L /* suppress all return-receipts */ 967 #define EF_HAS8BIT 0x00020000L /* at least one 8-bit char in body */ 968 #define EF_NL_NOT_EOL 0x00040000L /* don't accept raw NL as EOLine */ 969 #define EF_CRLF_NOT_EOL 0x00080000L /* don't accept CR-LF as EOLine */ 970 #define EF_RET_PARAM 0x00100000L /* RCPT command had RET argument */ 971 #define EF_HAS_DF 0x00200000L /* set when data file is instantiated */ 972 #define EF_IS_MIME 0x00400000L /* really is a MIME message */ 973 #define EF_DONT_MIME 0x00800000L /* never MIME this message */ 974 #define EF_DISCARD 0x01000000L /* discard the message */ 975 #define EF_TOOBIG 0x02000000L /* message is too big */ 976 #define EF_SPLIT 0x04000000L /* envelope has been split */ 977 #define EF_UNSAFE 0x08000000L /* unsafe: read from untrusted source */ 978 #define EF_TOODEEP 0x10000000L /* message is nested too deep */ 979 980 #define DLVR_NOTIFY 0x01 981 #define DLVR_RETURN 0x02 982 #define DLVR_TRACE 0x10 983 #define IS_DLVR_NOTIFY(e) (((e)->e_dlvr_flag & DLVR_NOTIFY) != 0) 984 #define IS_DLVR_RETURN(e) (((e)->e_dlvr_flag & DLVR_RETURN) != 0) 985 #define IS_DLVR_TRACE(e) (((e)->e_dlvr_flag & DLVR_TRACE) != 0) 986 #define IS_DLVR_BY(e) ((e)->e_dlvr_flag != 0) 987 988 #define BODYTYPE_NONE (0) 989 #define BODYTYPE_7BIT (1) 990 #define BODYTYPE_8BITMIME (2) 991 #define BODYTYPE_ILLEGAL (-1) 992 #define BODYTYPE_VALID(b) ((b) == BODYTYPE_7BIT || (b) == BODYTYPE_8BITMIME) 993 994 extern ENVELOPE BlankEnvelope; 995 996 /* functions */ 997 extern void clearenvelope __P((ENVELOPE *, bool, SM_RPOOL_T *)); 998 extern int dropenvelope __P((ENVELOPE *, bool, bool)); 999 extern ENVELOPE *newenvelope __P((ENVELOPE *, ENVELOPE *, SM_RPOOL_T *)); 1000 extern void clrsessenvelope __P((ENVELOPE *)); 1001 extern void printenvflags __P((ENVELOPE *)); 1002 extern bool putbody __P((MCI *, ENVELOPE *, char *)); 1003 extern bool putheader __P((MCI *, HDR *, ENVELOPE *, int)); 1004 1005 /* 1006 ** Message priority classes. 1007 ** 1008 ** The message class is read directly from the Priority: header 1009 ** field in the message. 1010 ** 1011 ** CurEnv->e_msgpriority is the number of bytes in the message plus 1012 ** the creation time (so that jobs ``tend'' to be ordered correctly), 1013 ** adjusted by the message class, the number of recipients, and the 1014 ** amount of time the message has been sitting around. This number 1015 ** is used to order the queue. Higher values mean LOWER priority. 1016 ** 1017 ** Each priority class point is worth WkClassFact priority points; 1018 ** each recipient is worth WkRecipFact priority points. Each time 1019 ** we reprocess a message the priority is adjusted by WkTimeFact. 1020 ** WkTimeFact should normally decrease the priority so that jobs 1021 ** that have historically failed will be run later; thanks go to 1022 ** Jay Lepreau at Utah for pointing out the error in my thinking. 1023 ** 1024 ** The "class" is this number, unadjusted by the age or size of 1025 ** this message. Classes with negative representations will have 1026 ** error messages thrown away if they are not local. 1027 */ 1028 1029 struct priority 1030 { 1031 char *pri_name; /* external name of priority */ 1032 int pri_val; /* internal value for same */ 1033 }; 1034 1035 EXTERN int NumPriorities; /* pointer into Priorities */ 1036 EXTERN struct priority Priorities[MAXPRIORITIES]; 1037 1038 /* 1039 ** Rewrite rules. 1040 */ 1041 1042 struct rewrite 1043 { 1044 char **r_lhs; /* pattern match */ 1045 char **r_rhs; /* substitution value */ 1046 struct rewrite *r_next;/* next in chain */ 1047 int r_line; /* rule line in sendmail.cf */ 1048 }; 1049 1050 /* 1051 ** Special characters in rewriting rules. 1052 ** These are used internally only. 1053 ** The COND* rules are actually used in macros rather than in 1054 ** rewriting rules, but are given here because they 1055 ** cannot conflict. 1056 */ 1057 1058 /* "out of band" indicator */ 1059 /* sm/sendmail.h #define METAQUOTE ((unsigned char)0377) quotes the next octet */ 1060 1061 /* left hand side items */ 1062 #define MATCHZANY ((unsigned char)0220) /* match zero or more tokens */ 1063 #define MATCHANY ((unsigned char)0221) /* match one or more tokens */ 1064 #define MATCHONE ((unsigned char)0222) /* match exactly one token */ 1065 #define MATCHCLASS ((unsigned char)0223) /* match one token in a class */ 1066 #define MATCHNCLASS ((unsigned char)0224) /* match tokens not in class */ 1067 1068 /* right hand side items */ 1069 #define MATCHREPL ((unsigned char)0225) /* RHS replacement for above */ 1070 #define CANONNET ((unsigned char)0226) /* canonical net, next token */ 1071 #define CANONHOST ((unsigned char)0227) /* canonical host, next token */ 1072 #define CANONUSER ((unsigned char)0230) /* canonical user, next N tokens */ 1073 #define CALLSUBR ((unsigned char)0231) /* call another rewriting set */ 1074 1075 /* conditionals in macros (anywhere) */ 1076 #define CONDIF ((unsigned char)0232) /* conditional if-then */ 1077 #define CONDELSE ((unsigned char)0233) /* conditional else */ 1078 #define CONDFI ((unsigned char)0234) /* conditional fi */ 1079 1080 /* bracket characters for RHS host name lookup */ 1081 #define HOSTBEGIN ((unsigned char)0235) /* hostname lookup begin */ 1082 #define HOSTEND ((unsigned char)0236) /* hostname lookup end */ 1083 1084 /* bracket characters for RHS generalized lookup */ 1085 #define LOOKUPBEGIN ((unsigned char)0205) /* generalized lookup begin */ 1086 #define LOOKUPEND ((unsigned char)0206) /* generalized lookup end */ 1087 1088 /* macro substitution characters (anywhere) */ 1089 #define MACROEXPAND ((unsigned char)0201) /* macro expansion */ 1090 #define MACRODEXPAND ((unsigned char)0202) /* deferred macro expansion */ 1091 1092 /* to make the code clearer */ 1093 #define MATCHZERO CANONHOST 1094 1095 #define MAXMATCH 9 /* max params per rewrite */ 1096 #define MAX_MAP_ARGS 10 /* max arguments for map */ 1097 1098 /* external <==> internal mapping table */ 1099 struct metamac 1100 { 1101 char metaname; /* external code (after $) */ 1102 unsigned char metaval; /* internal code (as above) */ 1103 }; 1104 1105 /* values for macros with external names only */ 1106 #define MID_OPMODE 0202 /* operation mode */ 1107 1108 /* functions */ 1109 #if SM_HEAP_CHECK 1110 extern void 1111 macdefine_tagged __P(( 1112 MACROS_T *_mac, 1113 ARGCLASS_T _vclass, 1114 int _id, 1115 char *_value, 1116 char *_file, 1117 int _line, 1118 int _group)); 1119 # define macdefine(mac,c,id,v) \ 1120 macdefine_tagged(mac,c,id,v,__FILE__,__LINE__,sm_heap_group()) 1121 #else /* SM_HEAP_CHECK */ 1122 extern void 1123 macdefine __P(( 1124 MACROS_T *_mac, 1125 ARGCLASS_T _vclass, 1126 int _id, 1127 char *_value)); 1128 # define macdefine_tagged(mac,c,id,v,file,line,grp) macdefine(mac,c,id,v) 1129 #endif /* SM_HEAP_CHECK */ 1130 extern void macset __P((MACROS_T *, int, char *)); 1131 #define macget(mac, i) (mac)->mac_table[i] 1132 extern void expand __P((char *, char *, size_t, ENVELOPE *)); 1133 extern int macid_parse __P((char *, char **)); 1134 #define macid(name) macid_parse(name, NULL) 1135 extern char *macname __P((int)); 1136 extern char *macvalue __P((int, ENVELOPE *)); 1137 extern int rscheck __P((char *, char *, char *, ENVELOPE *, int, int, char *, char *, ADDRESS *)); 1138 extern int rscap __P((char *, char *, char *, ENVELOPE *, char ***, char *, int)); 1139 extern void setclass __P((int, char *)); 1140 extern int strtorwset __P((char *, char **, int)); 1141 extern char *translate_dollars __P((char *, char *, int *)); 1142 extern bool wordinclass __P((char *, int)); 1143 1144 /* 1145 ** Name canonification short circuit. 1146 ** 1147 ** If the name server for a host is down, the process of trying to 1148 ** canonify the name can hang. This is similar to (but alas, not 1149 ** identical to) looking up the name for delivery. This stab type 1150 ** caches the result of the name server lookup so we don't hang 1151 ** multiple times. 1152 */ 1153 1154 #define NAMECANON struct _namecanon 1155 1156 NAMECANON 1157 { 1158 short nc_errno; /* cached errno */ 1159 short nc_herrno; /* cached h_errno */ 1160 short nc_stat; /* cached exit status code */ 1161 short nc_flags; /* flag bits */ 1162 char *nc_cname; /* the canonical name */ 1163 time_t nc_exp; /* entry expires at */ 1164 }; 1165 1166 /* values for nc_flags */ 1167 #define NCF_VALID 0x0001 /* entry valid */ 1168 1169 /* hostsignature structure */ 1170 1171 struct hostsig_t 1172 { 1173 char *hs_sig; /* hostsignature */ 1174 time_t hs_exp; /* entry expires at */ 1175 }; 1176 1177 typedef struct hostsig_t HOSTSIG_T; 1178 1179 /* 1180 ** The standard udp packet size PACKETSZ (512) is not sufficient for some 1181 ** nameserver answers containing very many resource records. The resolver 1182 ** may switch to tcp and retry if it detects udp packet overflow. 1183 ** Also note that the resolver routines res_query and res_search return 1184 ** the size of the *un*truncated answer in case the supplied answer buffer 1185 ** it not big enough to accommodate the entire answer. 1186 */ 1187 1188 # ifndef MAXPACKET 1189 # define MAXPACKET 8192 /* max packet size used internally by BIND */ 1190 # endif /* ! MAXPACKET */ 1191 1192 /* 1193 ** The resolver functions res_{send,query,querydomain} expect the 1194 ** answer buffer to be aligned, but some versions of gcc4 reverse 1195 ** 25 years of history and no longer align char buffers on the 1196 ** stack, resulting in crashes on strict-alignment platforms. Use 1197 ** this union when putting the buffer on the stack to force the 1198 ** alignment, then cast to (HEADER *) or (unsigned char *) as needed. 1199 */ 1200 typedef union 1201 { 1202 HEADER qb1; 1203 unsigned char qb2[MAXPACKET]; 1204 } querybuf; 1205 1206 /* functions */ 1207 extern bool getcanonname __P((char *, int, bool, int *)); 1208 extern int getmxrr __P((char *, char **, unsigned short *, bool, int *, bool, int *)); 1209 extern char *hostsignature __P((MAILER *, char *)); 1210 extern int getfallbackmxrr __P((char *)); 1211 1212 /* 1213 ** Mapping functions 1214 ** 1215 ** These allow arbitrary mappings in the config file. The idea 1216 ** (albeit not the implementation) comes from IDA sendmail. 1217 */ 1218 1219 #define MAPCLASS struct _mapclass 1220 #define MAP struct _map 1221 #define MAXMAPACTIONS 5 /* size of map_actions array */ 1222 1223 1224 /* 1225 ** An actual map. 1226 */ 1227 1228 MAP 1229 { 1230 MAPCLASS *map_class; /* the class of this map */ 1231 MAPCLASS *map_orgclass; /* the original class of this map */ 1232 char *map_mname; /* name of this map */ 1233 long map_mflags; /* flags, see below */ 1234 char *map_file; /* the (nominal) filename */ 1235 ARBPTR_T map_db1; /* the open database ptr */ 1236 ARBPTR_T map_db2; /* an "extra" database pointer */ 1237 char *map_keycolnm; /* key column name */ 1238 char *map_valcolnm; /* value column name */ 1239 unsigned char map_keycolno; /* key column number */ 1240 unsigned char map_valcolno; /* value column number */ 1241 char map_coldelim; /* column delimiter */ 1242 char map_spacesub; /* spacesub */ 1243 char *map_app; /* to append to successful matches */ 1244 char *map_tapp; /* to append to "tempfail" matches */ 1245 char *map_domain; /* the (nominal) NIS domain */ 1246 char *map_rebuild; /* program to run to do auto-rebuild */ 1247 time_t map_mtime; /* last database modification time */ 1248 time_t map_timeout; /* timeout for map accesses */ 1249 int map_retry; /* # of retries for map accesses */ 1250 pid_t map_pid; /* PID of process which opened map */ 1251 int map_lockfd; /* auxiliary lock file descriptor */ 1252 short map_specificity; /* specificity of aliases */ 1253 MAP *map_stack[MAXMAPSTACK]; /* list for stacked maps */ 1254 short map_return[MAXMAPACTIONS]; /* return bitmaps for stacked maps */ 1255 }; 1256 1257 1258 /* bit values for map_mflags */ 1259 #define MF_VALID 0x00000001 /* this entry is valid */ 1260 #define MF_INCLNULL 0x00000002 /* include null byte in key */ 1261 #define MF_OPTIONAL 0x00000004 /* don't complain if map not found */ 1262 #define MF_NOFOLDCASE 0x00000008 /* don't fold case in keys */ 1263 #define MF_MATCHONLY 0x00000010 /* don't use the map value */ 1264 #define MF_OPEN 0x00000020 /* this entry is open */ 1265 #define MF_WRITABLE 0x00000040 /* open for writing */ 1266 #define MF_ALIAS 0x00000080 /* this is an alias file */ 1267 #define MF_TRY0NULL 0x00000100 /* try with no null byte */ 1268 #define MF_TRY1NULL 0x00000200 /* try with the null byte */ 1269 #define MF_LOCKED 0x00000400 /* this map is currently locked */ 1270 #define MF_ALIASWAIT 0x00000800 /* alias map in aliaswait state */ 1271 #define MF_IMPL_HASH 0x00001000 /* implicit: underlying hash database */ 1272 #define MF_IMPL_NDBM 0x00002000 /* implicit: underlying NDBM database */ 1273 /* 0x00004000 */ 1274 #define MF_APPEND 0x00008000 /* append new entry on rebuild */ 1275 #define MF_KEEPQUOTES 0x00010000 /* don't dequote key before lookup */ 1276 #define MF_NODEFER 0x00020000 /* don't defer if map lookup fails */ 1277 #define MF_REGEX_NOT 0x00040000 /* regular expression negation */ 1278 #define MF_DEFER 0x00080000 /* don't lookup map in defer mode */ 1279 #define MF_SINGLEMATCH 0x00100000 /* successful only if match one key */ 1280 #define MF_SINGLEDN 0x00200000 /* only one match, but multi values */ 1281 #define MF_FILECLASS 0x00400000 /* this is a file class map */ 1282 #define MF_OPENBOGUS 0x00800000 /* open failed, don't call map_close */ 1283 #define MF_CLOSING 0x01000000 /* map is being closed */ 1284 1285 #define DYNOPENMAP(map) \ 1286 do \ 1287 { \ 1288 if (!bitset(MF_OPEN, (map)->map_mflags)) \ 1289 { \ 1290 if (!openmap(map)) \ 1291 return NULL; \ 1292 } \ 1293 } while (0) 1294 1295 1296 /* indices for map_actions */ 1297 #define MA_NOTFOUND 0 /* member map returned "not found" */ 1298 #define MA_UNAVAIL 1 /* member map is not available */ 1299 #define MA_TRYAGAIN 2 /* member map returns temp failure */ 1300 1301 /* macros to handle MapTempFail */ 1302 #define BIT_IS_MTP 0x01 /* temp.failure occurred */ 1303 #define BIT_ASK_MTP 0x02 /* do we care about MapTempFail? */ 1304 #define RESET_MAPTEMPFAIL MapTempFail = 0 1305 #define INIT_MAPTEMPFAIL MapTempFail = BIT_ASK_MTP 1306 #define SET_MAPTEMPFAIL MapTempFail |= BIT_IS_MTP 1307 #define IS_MAPTEMPFAIL bitset(BIT_IS_MTP, MapTempFail) 1308 #define ASK_MAPTEMPFAIL bitset(BIT_ASK_MTP, MapTempFail) 1309 1310 /* 1311 ** The class of a map -- essentially the functions to call 1312 */ 1313 1314 MAPCLASS 1315 { 1316 char *map_cname; /* name of this map class */ 1317 char *map_ext; /* extension for database file */ 1318 short map_cflags; /* flag bits, see below */ 1319 bool (*map_parse)__P((MAP *, char *)); 1320 /* argument parsing function */ 1321 char *(*map_lookup)__P((MAP *, char *, char **, int *)); 1322 /* lookup function */ 1323 void (*map_store)__P((MAP *, char *, char *)); 1324 /* store function */ 1325 bool (*map_open)__P((MAP *, int)); 1326 /* open function */ 1327 void (*map_close)__P((MAP *)); 1328 /* close function */ 1329 }; 1330 1331 /* bit values for map_cflags */ 1332 #define MCF_ALIASOK 0x0001 /* can be used for aliases */ 1333 #define MCF_ALIASONLY 0x0002 /* usable only for aliases */ 1334 #define MCF_REBUILDABLE 0x0004 /* can rebuild alias files */ 1335 #define MCF_OPTFILE 0x0008 /* file name is optional */ 1336 #define MCF_NOTPERSIST 0x0010 /* don't keep map open all the time */ 1337 1338 /* functions */ 1339 extern void closemaps __P((bool)); 1340 extern bool impl_map_open __P((MAP *, int)); 1341 extern void initmaps __P((void)); 1342 extern MAP *makemapentry __P((char *)); 1343 extern void maplocaluser __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 1344 extern char *map_rewrite __P((MAP *, const char *, size_t, char **)); 1345 #if NETINFO 1346 extern char *ni_propval __P((char *, char *, char *, char *, int)); 1347 #endif /* NETINFO */ 1348 extern bool openmap __P((MAP *)); 1349 extern int udbexpand __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 1350 #if USERDB 1351 extern void _udbx_close __P((void)); 1352 extern char *udbsender __P((char *, SM_RPOOL_T *)); 1353 #endif /* USERDB */ 1354 1355 /* 1356 ** LDAP related items 1357 */ 1358 #if LDAPMAP 1359 /* struct defining LDAP Auth Methods */ 1360 struct lamvalues 1361 { 1362 char *lam_name; /* name of LDAP auth method */ 1363 int lam_code; /* numeric code */ 1364 }; 1365 1366 /* struct defining LDAP Alias Dereferencing */ 1367 struct ladvalues 1368 { 1369 char *lad_name; /* name of LDAP alias dereferencing method */ 1370 int lad_code; /* numeric code */ 1371 }; 1372 1373 /* struct defining LDAP Search Scope */ 1374 struct lssvalues 1375 { 1376 char *lss_name; /* name of LDAP search scope */ 1377 int lss_code; /* numeric code */ 1378 }; 1379 1380 /* functions */ 1381 extern bool ldapmap_parseargs __P((MAP *, char *)); 1382 extern void ldapmap_set_defaults __P((char *)); 1383 #endif /* LDAPMAP */ 1384 1385 /* 1386 ** PH related items 1387 */ 1388 1389 #if PH_MAP 1390 1391 # include <phclient.h> 1392 1393 struct ph_map_struct 1394 { 1395 char *ph_servers; /* list of ph servers */ 1396 char *ph_field_list; /* list of fields to search for match */ 1397 PH *ph; /* PH server handle */ 1398 int ph_fastclose; /* send "quit" command on close */ 1399 time_t ph_timeout; /* timeout interval */ 1400 }; 1401 typedef struct ph_map_struct PH_MAP_STRUCT; 1402 1403 #endif /* PH_MAP */ 1404 1405 /* 1406 ** Regular UNIX sockaddrs are too small to handle ISO addresses, so 1407 ** we are forced to declare a supertype here. 1408 */ 1409 1410 #if NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 1411 union bigsockaddr 1412 { 1413 struct sockaddr sa; /* general version */ 1414 # if NETUNIX 1415 struct sockaddr_un sunix; /* UNIX family */ 1416 # endif /* NETUNIX */ 1417 # if NETINET 1418 struct sockaddr_in sin; /* INET family */ 1419 # endif /* NETINET */ 1420 # if NETINET6 1421 struct sockaddr_in6 sin6; /* INET/IPv6 */ 1422 # endif /* NETINET6 */ 1423 # if NETISO 1424 struct sockaddr_iso siso; /* ISO family */ 1425 # endif /* NETISO */ 1426 # if NETNS 1427 struct sockaddr_ns sns; /* XNS family */ 1428 # endif /* NETNS */ 1429 # if NETX25 1430 struct sockaddr_x25 sx25; /* X.25 family */ 1431 # endif /* NETX25 */ 1432 }; 1433 1434 # define SOCKADDR union bigsockaddr 1435 1436 /* functions */ 1437 extern char *anynet_ntoa __P((SOCKADDR *)); 1438 # if NETINET6 1439 extern char *anynet_ntop __P((struct in6_addr *, char *, size_t)); 1440 extern int anynet_pton __P((int, const char *, void *)); 1441 # endif /* NETINET6 */ 1442 extern char *hostnamebyanyaddr __P((SOCKADDR *)); 1443 extern char *validate_connection __P((SOCKADDR *, char *, ENVELOPE *)); 1444 # if SASL >= 20000 1445 extern bool iptostring __P((SOCKADDR *, SOCKADDR_LEN_T, char *, unsigned)); 1446 # endif /* SASL >= 20000 */ 1447 1448 #endif /* NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 */ 1449 1450 /* 1451 ** Process List (proclist) 1452 */ 1453 1454 #define NO_PID ((pid_t) 0) 1455 #ifndef PROC_LIST_SEG 1456 # define PROC_LIST_SEG 32 /* number of pids to alloc at a time */ 1457 #endif /* ! PROC_LIST_SEG */ 1458 1459 /* process types */ 1460 #define PROC_NONE 0 1461 #define PROC_DAEMON 1 1462 #define PROC_DAEMON_CHILD 2 1463 #define PROC_QUEUE 3 1464 #define PROC_QUEUE_CHILD 3 1465 #define PROC_CONTROL 4 1466 #define PROC_CONTROL_CHILD 5 1467 1468 /* functions */ 1469 extern void proc_list_add __P((pid_t, char *, int, int, int, SOCKADDR *)); 1470 extern void proc_list_clear __P((void)); 1471 extern void proc_list_display __P((SM_FILE_T *, char *)); 1472 extern void proc_list_drop __P((pid_t, int, int *)); 1473 extern void proc_list_probe __P((void)); 1474 extern void proc_list_set __P((pid_t, char *)); 1475 extern void proc_list_signal __P((int, int)); 1476 1477 /* 1478 ** Symbol table definitions 1479 */ 1480 1481 struct symtab 1482 { 1483 char *s_name; /* name to be entered */ 1484 short s_symtype; /* general type (see below) */ 1485 struct symtab *s_next; /* pointer to next in chain */ 1486 union 1487 { 1488 BITMAP256 sv_class; /* bit-map of word classes */ 1489 ADDRESS *sv_addr; /* pointer to address header */ 1490 MAILER *sv_mailer; /* pointer to mailer */ 1491 char *sv_alias; /* alias */ 1492 MAPCLASS sv_mapclass; /* mapping function class */ 1493 MAP sv_map; /* mapping function */ 1494 HOSTSIG_T sv_hostsig; /* host signature */ 1495 MCI sv_mci; /* mailer connection info */ 1496 NAMECANON sv_namecanon; /* canonical name cache */ 1497 int sv_macro; /* macro name => id mapping */ 1498 int sv_ruleset; /* ruleset index */ 1499 struct hdrinfo sv_header; /* header metainfo */ 1500 char *sv_service[MAXMAPSTACK]; /* service switch */ 1501 #if LDAPMAP 1502 MAP *sv_lmap; /* Maps for LDAP connection */ 1503 #endif /* LDAPMAP */ 1504 #if SOCKETMAP 1505 MAP *sv_socketmap; /* Maps for SOCKET connection */ 1506 #endif /* SOCKETMAP */ 1507 #if MILTER 1508 struct milter *sv_milter; /* milter filter name */ 1509 #endif /* MILTER */ 1510 QUEUEGRP *sv_queue; /* pointer to queue */ 1511 } s_value; 1512 }; 1513 1514 typedef struct symtab STAB; 1515 1516 /* symbol types */ 1517 #define ST_UNDEF 0 /* undefined type */ 1518 #define ST_CLASS 1 /* class map */ 1519 #define ST_ADDRESS 2 /* an address in parsed format */ 1520 #define ST_MAILER 3 /* a mailer header */ 1521 #define ST_ALIAS 4 /* an alias */ 1522 #define ST_MAPCLASS 5 /* mapping function class */ 1523 #define ST_MAP 6 /* mapping function */ 1524 #define ST_HOSTSIG 7 /* host signature */ 1525 #define ST_NAMECANON 8 /* cached canonical name */ 1526 #define ST_MACRO 9 /* macro name to id mapping */ 1527 #define ST_RULESET 10 /* ruleset index */ 1528 #define ST_SERVICE 11 /* service switch entry */ 1529 #define ST_HEADER 12 /* special header flags */ 1530 #if LDAPMAP 1531 # define ST_LMAP 13 /* List head of maps for LDAP connection */ 1532 #endif /* LDAPMAP */ 1533 #if MILTER 1534 # define ST_MILTER 14 /* milter filter */ 1535 #endif /* MILTER */ 1536 #define ST_QUEUE 15 /* a queue entry */ 1537 1538 #if SOCKETMAP 1539 # define ST_SOCKETMAP 16 /* List head of maps for SOCKET connection */ 1540 #endif /* SOCKETMAP */ 1541 1542 /* This entry must be last */ 1543 #define ST_MCI 17 /* mailer connection info (offset) */ 1544 1545 #define s_class s_value.sv_class 1546 #define s_address s_value.sv_addr 1547 #define s_mailer s_value.sv_mailer 1548 #define s_alias s_value.sv_alias 1549 #define s_mci s_value.sv_mci 1550 #define s_mapclass s_value.sv_mapclass 1551 #define s_hostsig s_value.sv_hostsig 1552 #define s_map s_value.sv_map 1553 #define s_namecanon s_value.sv_namecanon 1554 #define s_macro s_value.sv_macro 1555 #define s_ruleset s_value.sv_ruleset 1556 #define s_service s_value.sv_service 1557 #define s_header s_value.sv_header 1558 #if LDAPMAP 1559 # define s_lmap s_value.sv_lmap 1560 #endif /* LDAPMAP */ 1561 #if SOCKETMAP 1562 # define s_socketmap s_value.sv_socketmap 1563 #endif /* SOCKETMAP */ 1564 #if MILTER 1565 # define s_milter s_value.sv_milter 1566 #endif /* MILTER */ 1567 #define s_quegrp s_value.sv_queue 1568 1569 /* opcodes to stab */ 1570 #define ST_FIND 0 /* find entry */ 1571 #define ST_ENTER 1 /* enter if not there */ 1572 1573 /* functions */ 1574 extern STAB *stab __P((char *, int, int)); 1575 extern void stabapply __P((void (*)(STAB *, int), int)); 1576 1577 /* 1578 ** Operation, send, error, and MIME modes 1579 ** 1580 ** The operation mode describes the basic operation of sendmail. 1581 ** This can be set from the command line, and is "send mail" by 1582 ** default. 1583 ** 1584 ** The send mode tells how to send mail. It can be set in the 1585 ** configuration file. Its setting determines how quickly the 1586 ** mail will be delivered versus the load on your system. If the 1587 ** -v (verbose) flag is given, it will be forced to SM_DELIVER 1588 ** mode. 1589 ** 1590 ** The error mode tells how to return errors. 1591 */ 1592 1593 #define MD_DELIVER 'm' /* be a mail sender */ 1594 #define MD_SMTP 's' /* run SMTP on standard input */ 1595 #define MD_ARPAFTP 'a' /* obsolete ARPANET mode (Grey Book) */ 1596 #define MD_DAEMON 'd' /* run as a daemon */ 1597 #define MD_FGDAEMON 'D' /* run daemon in foreground */ 1598 #define MD_LOCAL 'l' /* like daemon, but localhost only */ 1599 #define MD_VERIFY 'v' /* verify: don't collect or deliver */ 1600 #define MD_TEST 't' /* test mode: resolve addrs only */ 1601 #define MD_INITALIAS 'i' /* initialize alias database */ 1602 #define MD_PRINT 'p' /* print the queue */ 1603 #define MD_PRINTNQE 'P' /* print number of entries in queue */ 1604 #define MD_FREEZE 'z' /* freeze the configuration file */ 1605 #define MD_HOSTSTAT 'h' /* print persistent host stat info */ 1606 #define MD_PURGESTAT 'H' /* purge persistent host stat info */ 1607 #define MD_QUEUERUN 'q' /* queue run */ 1608 #define MD_CHECKCONFIG 'C' /* check configuration file */ 1609 1610 #if _FFR_LOCAL_DAEMON 1611 EXTERN bool LocalDaemon; 1612 # if NETINET6 1613 EXTERN bool V6LoopbackAddrFound; /* found an IPv6 loopback address */ 1614 # define SETV6LOOPBACKADDRFOUND(sa) \ 1615 do \ 1616 { \ 1617 if (isloopback(sa)) \ 1618 V6LoopbackAddrFound = true; \ 1619 } while (0) 1620 # endif /* NETINET6 */ 1621 #else /* _FFR_LOCAL_DAEMON */ 1622 # define LocalDaemon false 1623 # define V6LoopbackAddrFound false 1624 # define SETV6LOOPBACKADDRFOUND(sa) 1625 #endif /* _FFR_LOCAL_DAEMON */ 1626 1627 /* Note: see also include/sendmail/pathnames.h: GET_CLIENT_CF */ 1628 1629 /* values for e_sendmode -- send modes */ 1630 #define SM_DELIVER 'i' /* interactive delivery */ 1631 #define SM_FORK 'b' /* deliver in background */ 1632 #if _FFR_DM_ONE 1633 #define SM_DM_ONE 'o' /* deliver first TA in background, then queue */ 1634 #endif /* _FFR_DM_ONE */ 1635 #define SM_QUEUE 'q' /* queue, don't deliver */ 1636 #define SM_DEFER 'd' /* defer map lookups as well as queue */ 1637 #define SM_VERIFY 'v' /* verify only (used internally) */ 1638 #define DM_NOTSET (-1) /* DeliveryMode (per daemon) option not set */ 1639 # define SM_IS_INTERACTIVE(m) ((m) == SM_DELIVER) 1640 1641 #define WILL_BE_QUEUED(m) ((m) == SM_QUEUE || (m) == SM_DEFER) 1642 1643 /* used only as a parameter to sendall */ 1644 #define SM_DEFAULT '\0' /* unspecified, use SendMode */ 1645 1646 /* functions */ 1647 extern void set_delivery_mode __P((int, ENVELOPE *)); 1648 1649 /* values for e_errormode -- error handling modes */ 1650 #define EM_PRINT 'p' /* print errors */ 1651 #define EM_MAIL 'm' /* mail back errors */ 1652 #define EM_WRITE 'w' /* write back errors */ 1653 #define EM_BERKNET 'e' /* special berknet processing */ 1654 #define EM_QUIET 'q' /* don't print messages (stat only) */ 1655 1656 1657 /* bit values for MimeMode */ 1658 #define MM_CVTMIME 0x0001 /* convert 8 to 7 bit MIME */ 1659 #define MM_PASS8BIT 0x0002 /* just send 8 bit data blind */ 1660 #define MM_MIME8BIT 0x0004 /* convert 8-bit data to MIME */ 1661 1662 1663 /* how to handle messages without any recipient addresses */ 1664 #define NRA_NO_ACTION 0 /* just leave it as is */ 1665 #define NRA_ADD_TO 1 /* add To: header */ 1666 #define NRA_ADD_APPARENTLY_TO 2 /* add Apparently-To: header */ 1667 #define NRA_ADD_BCC 3 /* add empty Bcc: header */ 1668 #define NRA_ADD_TO_UNDISCLOSED 4 /* add To: undisclosed:; header */ 1669 1670 1671 /* flags to putxline */ 1672 #define PXLF_NOTHINGSPECIAL 0 /* no special mapping */ 1673 #define PXLF_MAPFROM 0x0001 /* map From_ to >From_ */ 1674 #define PXLF_STRIP8BIT 0x0002 /* strip 8th bit */ 1675 #define PXLF_HEADER 0x0004 /* map newlines in headers */ 1676 #define PXLF_NOADDEOL 0x0008 /* if EOL not present, don't add one */ 1677 #define PXLF_STRIPMQUOTE 0x0010 /* strip METAQUOTEs */ 1678 1679 /* 1680 ** Privacy flags 1681 ** These are bit values for the PrivacyFlags word. 1682 */ 1683 1684 #define PRIV_PUBLIC 0 /* what have I got to hide? */ 1685 #define PRIV_NEEDMAILHELO 0x00000001 /* insist on HELO for MAIL */ 1686 #define PRIV_NEEDEXPNHELO 0x00000002 /* insist on HELO for EXPN */ 1687 #define PRIV_NEEDVRFYHELO 0x00000004 /* insist on HELO for VRFY */ 1688 #define PRIV_NOEXPN 0x00000008 /* disallow EXPN command */ 1689 #define PRIV_NOVRFY 0x00000010 /* disallow VRFY command */ 1690 #define PRIV_AUTHWARNINGS 0x00000020 /* flag possible auth probs */ 1691 #define PRIV_NOVERB 0x00000040 /* disallow VERB command */ 1692 #define PRIV_RESTRICTMAILQ 0x00010000 /* restrict mailq command */ 1693 #define PRIV_RESTRICTQRUN 0x00020000 /* restrict queue run */ 1694 #define PRIV_RESTRICTEXPAND 0x00040000 /* restrict alias/forward expansion */ 1695 #define PRIV_NOETRN 0x00080000 /* disallow ETRN command */ 1696 #define PRIV_NOBODYRETN 0x00100000 /* do not return bodies on bounces */ 1697 #define PRIV_NORECEIPTS 0x00200000 /* disallow return receipts */ 1698 #define PRIV_NOACTUALRECIPIENT 0x00400000 /* no X-Actual-Recipient in DSNs */ 1699 1700 /* don't give no info, anyway, anyhow (in the main SMTP transaction) */ 1701 #define PRIV_GOAWAY 0x0000ffff 1702 1703 /* struct defining such things */ 1704 struct prival 1705 { 1706 char *pv_name; /* name of privacy flag */ 1707 unsigned long pv_flag; /* numeric level */ 1708 }; 1709 1710 EXTERN unsigned long PrivacyFlags; /* privacy flags */ 1711 1712 1713 /* 1714 ** Flags passed to remotename, parseaddr, allocaddr, and buildaddr. 1715 */ 1716 1717 #define RF_SENDERADDR 0x001 /* this is a sender address */ 1718 #define RF_HEADERADDR 0x002 /* this is a header address */ 1719 #define RF_CANONICAL 0x004 /* strip comment information */ 1720 #define RF_ADDDOMAIN 0x008 /* OK to do domain extension */ 1721 #define RF_COPYPARSE 0x010 /* copy parsed user & host */ 1722 #define RF_COPYPADDR 0x020 /* copy print address */ 1723 #define RF_COPYALL (RF_COPYPARSE|RF_COPYPADDR) 1724 #define RF_COPYNONE 0 1725 #define RF_RM_ADDR 0x040 /* address to be removed */ 1726 1727 /* 1728 ** Flags passed to rscheck 1729 */ 1730 1731 #define RSF_RMCOMM 0x0001 /* strip comments */ 1732 #define RSF_UNSTRUCTURED 0x0002 /* unstructured, ignore syntax errors */ 1733 #define RSF_COUNT 0x0004 /* count rejections (statistics)? */ 1734 1735 /* 1736 ** Flags passed to mime8to7 and putheader. 1737 */ 1738 1739 #define M87F_OUTER 0 /* outer context */ 1740 #define M87F_NO8BIT 0x0001 /* can't have 8-bit in this section */ 1741 #define M87F_DIGEST 0x0002 /* processing multipart/digest */ 1742 #define M87F_NO8TO7 0x0004 /* don't do 8->7 bit conversions */ 1743 1744 /* functions */ 1745 extern bool mime7to8 __P((MCI *, HDR *, ENVELOPE *)); 1746 extern int mime8to7 __P((MCI *, HDR *, ENVELOPE *, char **, int, int)); 1747 1748 /* 1749 ** Flags passed to returntosender. 1750 */ 1751 1752 #define RTSF_NO_BODY 0 /* send headers only */ 1753 #define RTSF_SEND_BODY 0x0001 /* include body of message in return */ 1754 #define RTSF_PM_BOUNCE 0x0002 /* this is a postmaster bounce */ 1755 1756 /* functions */ 1757 extern int returntosender __P((char *, ADDRESS *, int, ENVELOPE *)); 1758 1759 /* 1760 ** Mail Filters (milter) 1761 */ 1762 1763 /* 1764 ** 32-bit type used by milter 1765 ** (needed by libmilter even if MILTER isn't defined) 1766 */ 1767 1768 typedef SM_INT32 mi_int32; 1769 1770 #if MILTER 1771 # define SMFTO_WRITE 0 /* Timeout for sending information */ 1772 # define SMFTO_READ 1 /* Timeout waiting for a response */ 1773 # define SMFTO_EOM 2 /* Timeout for ACK/NAK to EOM */ 1774 # define SMFTO_CONNECT 3 /* Timeout for connect() */ 1775 1776 # define SMFTO_NUM_TO 4 /* Total number of timeouts */ 1777 1778 struct milter 1779 { 1780 char *mf_name; /* filter name */ 1781 BITMAP256 mf_flags; /* MTA flags */ 1782 mi_int32 mf_fvers; /* filter version */ 1783 mi_int32 mf_fflags; /* filter flags */ 1784 mi_int32 mf_pflags; /* protocol flags */ 1785 char *mf_conn; /* connection info */ 1786 int mf_sock; /* connected socket */ 1787 char mf_state; /* state of filter */ 1788 time_t mf_timeout[SMFTO_NUM_TO]; /* timeouts */ 1789 #if _FFR_MILTER_CHECK 1790 /* for testing only */ 1791 mi_int32 mf_mta_prot_version; 1792 mi_int32 mf_mta_prot_flags; 1793 mi_int32 mf_mta_actions; 1794 #endif /* _FFR_MILTER_CHECK */ 1795 }; 1796 1797 struct milters 1798 { 1799 mi_int32 mis_flags; /* filter flags */ 1800 }; 1801 typedef struct milters milters_T; 1802 1803 #define MIS_FL_NONE 0x00000000 /* no requirements... */ 1804 #define MIS_FL_DEL_RCPT 0x00000001 /* can delete rcpt */ 1805 #define MIS_FL_REJ_RCPT 0x00000002 /* can reject rcpt */ 1806 1807 1808 /* MTA flags */ 1809 # define SMF_REJECT 'R' /* Reject connection on filter fail */ 1810 # define SMF_TEMPFAIL 'T' /* tempfail connection on failure */ 1811 # define SMF_TEMPDROP '4' /* 421 connection on failure */ 1812 1813 EXTERN struct milter *InputFilters[MAXFILTERS]; 1814 EXTERN char *InputFilterList; 1815 EXTERN int MilterLogLevel; 1816 1817 /* functions */ 1818 extern void setup_daemon_milters __P((void)); 1819 #endif /* MILTER */ 1820 1821 /* 1822 ** Vendor codes 1823 ** 1824 ** Vendors can customize sendmail to add special behaviour, 1825 ** generally for back compatibility. Ideally, this should 1826 ** be set up in the .cf file using the "V" command. However, 1827 ** it's quite reasonable for some vendors to want the default 1828 ** be their old version; this can be set using 1829 ** -DVENDOR_DEFAULT=VENDOR_xxx 1830 ** in the Makefile. 1831 ** 1832 ** Vendors should apply to sendmail@sendmail.org for 1833 ** unique vendor codes. 1834 */ 1835 1836 #define VENDOR_BERKELEY 1 /* Berkeley-native configuration file */ 1837 #define VENDOR_SUN 2 /* Sun-native configuration file */ 1838 #define VENDOR_HP 3 /* Hewlett-Packard specific config syntax */ 1839 #define VENDOR_IBM 4 /* IBM specific config syntax */ 1840 #define VENDOR_SENDMAIL 5 /* Sendmail, Inc. specific config syntax */ 1841 #define VENDOR_DEC 6 /* Compaq, DEC, Digital */ 1842 1843 /* prototypes for vendor-specific hook routines */ 1844 extern void vendor_daemon_setup __P((ENVELOPE *)); 1845 extern void vendor_set_uid __P((UID_T)); 1846 1847 1848 /* 1849 ** Terminal escape codes. 1850 ** 1851 ** To make debugging output clearer. 1852 */ 1853 1854 struct termescape 1855 { 1856 char *te_rv_on; /* turn reverse-video on */ 1857 char *te_under_on; /* turn underlining on */ 1858 char *te_normal; /* revert to normal output */ 1859 }; 1860 1861 /* 1862 ** Additional definitions 1863 */ 1864 1865 /* 1866 ** d_flags, see daemon.c 1867 ** general rule: lower case: required, upper case: No 1868 */ 1869 1870 #define D_AUTHREQ 'a' /* authentication required */ 1871 #define D_BINDIF 'b' /* use if_addr for outgoing connection */ 1872 #define D_CANONREQ 'c' /* canonification required (cf) */ 1873 #define D_IFNHELO 'h' /* use if name for HELO */ 1874 #define D_FQMAIL 'f' /* fq sender address required (cf) */ 1875 #define D_FQRCPT 'r' /* fq recipient address required (cf) */ 1876 #define D_SMTPS 's' /* SMTP over SSL (smtps) */ 1877 #define D_UNQUALOK 'u' /* unqualified address is ok (cf) */ 1878 #define D_NOAUTH 'A' /* no AUTH */ 1879 #define D_NOCANON 'C' /* no canonification (cf) */ 1880 #define D_NOETRN 'E' /* no ETRN (MSA) */ 1881 #define D_NOTLS 'S' /* don't use STARTTLS */ 1882 #define D_ETRNONLY ((char)0x01) /* allow only ETRN (disk low) */ 1883 #define D_OPTIONAL 'O' /* optional socket */ 1884 #define D_DISABLE ((char)0x02) /* optional socket disabled */ 1885 #define D_ISSET ((char)0x03) /* this client struct is set */ 1886 1887 #if STARTTLS 1888 /* 1889 ** TLS 1890 */ 1891 1892 /* what to do in the TLS initialization */ 1893 #define TLS_I_NONE 0x00000000 /* no requirements... */ 1894 #define TLS_I_CERT_EX 0x00000001 /* cert must exist */ 1895 #define TLS_I_CERT_UNR 0x00000002 /* cert must be g/o unreadable */ 1896 #define TLS_I_KEY_EX 0x00000004 /* key must exist */ 1897 #define TLS_I_KEY_UNR 0x00000008 /* key must be g/o unreadable */ 1898 #define TLS_I_CERTP_EX 0x00000010 /* CA cert path must exist */ 1899 #define TLS_I_CERTP_UNR 0x00000020 /* CA cert path must be g/o unreadable */ 1900 #define TLS_I_CERTF_EX 0x00000040 /* CA cert file must exist */ 1901 #define TLS_I_CERTF_UNR 0x00000080 /* CA cert file must be g/o unreadable */ 1902 #define TLS_I_RSA_TMP 0x00000100 /* RSA TMP must be generated */ 1903 #define TLS_I_USE_KEY 0x00000200 /* private key must usable */ 1904 #define TLS_I_USE_CERT 0x00000400 /* certificate must be usable */ 1905 #define TLS_I_VRFY_PATH 0x00000800 /* load verify path must succeed */ 1906 #define TLS_I_VRFY_LOC 0x00001000 /* load verify default must succeed */ 1907 #define TLS_I_CACHE 0x00002000 /* require cache */ 1908 #define TLS_I_TRY_DH 0x00004000 /* try DH certificate */ 1909 #define TLS_I_REQ_DH 0x00008000 /* require DH certificate */ 1910 #define TLS_I_DHPAR_EX 0x00010000 /* require DH parameters */ 1911 #define TLS_I_DHPAR_UNR 0x00020000 /* DH param. must be g/o unreadable */ 1912 #define TLS_I_DH512 0x00040000 /* generate 512bit DH param */ 1913 #define TLS_I_DH1024 0x00080000 /* generate 1024bit DH param */ 1914 #define TLS_I_DH2048 0x00100000 /* generate 2048bit DH param */ 1915 #define TLS_I_NO_VRFY 0x00200000 /* do not require authentication */ 1916 #define TLS_I_KEY_OUNR 0x00400000 /* Key must be other unreadable */ 1917 #define TLS_I_CRLF_EX 0x00800000 /* CRL file must exist */ 1918 #define TLS_I_CRLF_UNR 0x01000000 /* CRL file must be g/o unreadable */ 1919 1920 /* require server cert */ 1921 #define TLS_I_SRV_CERT (TLS_I_CERT_EX | TLS_I_KEY_EX | \ 1922 TLS_I_KEY_UNR | TLS_I_KEY_OUNR | \ 1923 TLS_I_CERTP_EX | TLS_I_CERTF_EX | \ 1924 TLS_I_USE_KEY | TLS_I_USE_CERT | TLS_I_CACHE) 1925 1926 /* server requirements */ 1927 #define TLS_I_SRV (TLS_I_SRV_CERT | TLS_I_RSA_TMP | TLS_I_VRFY_PATH | \ 1928 TLS_I_VRFY_LOC | TLS_I_TRY_DH | TLS_I_DH512 | \ 1929 TLS_I_CACHE) 1930 1931 /* client requirements */ 1932 #define TLS_I_CLT (TLS_I_KEY_UNR | TLS_I_KEY_OUNR) 1933 1934 #define TLS_AUTH_OK 0 1935 #define TLS_AUTH_NO 1 1936 #define TLS_AUTH_FAIL (-1) 1937 1938 /* functions */ 1939 extern bool init_tls_library __P((void)); 1940 extern bool inittls __P((SSL_CTX **, unsigned long, long, bool, char *, char *, char *, char *, char *)); 1941 extern bool initclttls __P((bool)); 1942 extern void setclttls __P((bool)); 1943 extern bool initsrvtls __P((bool)); 1944 extern int tls_get_info __P((SSL *, bool, char *, MACROS_T *, bool)); 1945 extern int endtls __P((SSL *, char *)); 1946 extern void tlslogerr __P((const char *)); 1947 1948 1949 EXTERN char *CACertPath; /* path to CA certificates (dir. with hashes) */ 1950 EXTERN char *CACertFile; /* file with CA certificate */ 1951 EXTERN char *CltCertFile; /* file with client certificate */ 1952 EXTERN char *CltKeyFile; /* file with client private key */ 1953 # if _FFR_TLS_1 1954 EXTERN char *CipherList; /* list of ciphers */ 1955 EXTERN char *DHParams5; /* file with DH parameters (512) */ 1956 # endif /* _FFR_TLS_1 */ 1957 EXTERN char *DHParams; /* file with DH parameters */ 1958 EXTERN char *RandFile; /* source of random data */ 1959 EXTERN char *SrvCertFile; /* file with server certificate */ 1960 EXTERN char *SrvKeyFile; /* file with server private key */ 1961 EXTERN char *CRLFile; /* file CRLs */ 1962 #if _FFR_CRLPATH 1963 EXTERN char *CRLPath; /* path to CRLs (dir. with hashes) */ 1964 #endif /* _FFR_CRLPATH */ 1965 EXTERN unsigned long TLS_Srv_Opts; /* TLS server options */ 1966 EXTERN long Srv_SSL_Options, Clt_SSL_Options; /* SSL options */ 1967 #endif /* STARTTLS */ 1968 1969 /* 1970 ** Queue related items 1971 */ 1972 1973 /* queue file names */ 1974 #define ANYQFL_LETTER '?' 1975 #define QUARQF_LETTER 'h' 1976 #define DATAFL_LETTER 'd' 1977 #define XSCRPT_LETTER 'x' 1978 #define NORMQF_LETTER 'q' 1979 #define NEWQFL_LETTER 't' 1980 1981 # define TEMPQF_LETTER 'T' 1982 # define LOSEQF_LETTER 'Q' 1983 1984 /* queue sort order */ 1985 #define QSO_BYPRIORITY 0 /* sort by message priority */ 1986 #define QSO_BYHOST 1 /* sort by first host name */ 1987 #define QSO_BYTIME 2 /* sort by submission time */ 1988 #define QSO_BYFILENAME 3 /* sort by file name only */ 1989 #define QSO_RANDOM 4 /* sort in random order */ 1990 #define QSO_BYMODTIME 5 /* sort by modification time */ 1991 #define QSO_NONE 6 /* do not sort */ 1992 #if _FFR_RHS 1993 # define QSO_BYSHUFFLE 7 /* sort by shuffled host name */ 1994 #endif /* _FFR_RHS */ 1995 1996 #define NOQGRP (-1) /* no queue group (yet) */ 1997 #define ENVQGRP (-2) /* use queue group of envelope */ 1998 #define NOAQGRP (-3) /* no queue group in addr (yet) */ 1999 #define ISVALIDQGRP(x) ((x) >= 0) /* valid queue group? */ 2000 #define NOQDIR (-1) /* no queue directory (yet) */ 2001 #define ENVQDIR (-2) /* use queue directory of envelope */ 2002 #define NOAQDIR (-3) /* no queue directory in addr (yet) */ 2003 #define ISVALIDQDIR(x) ((x) >= 0) /* valid queue directory? */ 2004 #define RS_QUEUEGROUP "queuegroup" /* ruleset for queue group selection */ 2005 2006 #define NOW ((time_t) (-1)) /* queue return: now */ 2007 2008 /* SuperSafe values */ 2009 #define SAFE_NO 0 /* no fsync(): don't use... */ 2010 #define SAFE_INTERACTIVE 1 /* limit fsync() in -odi */ 2011 #define SAFE_REALLY 2 /* always fsync() */ 2012 #define SAFE_REALLY_POSTMILTER 3 /* fsync() if milter says OK */ 2013 2014 /* QueueMode bits */ 2015 #define QM_NORMAL ' ' 2016 #define QM_QUARANTINE 'Q' 2017 #define QM_LOST 'L' 2018 2019 /* Queue Run Limitations */ 2020 struct queue_char 2021 { 2022 char *queue_match; /* string to match */ 2023 bool queue_negate; /* or not match, if set */ 2024 struct queue_char *queue_next; 2025 }; 2026 2027 /* run_work_group() flags */ 2028 #define RWG_NONE 0x0000 2029 #define RWG_FORK 0x0001 2030 #define RWG_VERBOSE 0x0002 2031 #define RWG_PERSISTENT 0x0004 2032 #define RWG_FORCE 0x0008 2033 #define RWG_RUNALL 0x0010 2034 2035 typedef struct queue_char QUEUE_CHAR; 2036 2037 EXTERN int volatile CurRunners; /* current number of runner children */ 2038 EXTERN int MaxQueueRun; /* maximum number of jobs in one queue run */ 2039 EXTERN int MaxQueueChildren; /* max # of forked queue children */ 2040 EXTERN int MaxRunnersPerQueue; /* max # proc's active in queue group */ 2041 EXTERN int NiceQueueRun; /* nice queue runs to this value */ 2042 EXTERN int NumQueue; /* number of queue groups */ 2043 EXTERN int QueueFileMode; /* mode on files in mail queue */ 2044 EXTERN int QueueMode; /* which queue items to act upon */ 2045 EXTERN int QueueSortOrder; /* queue sorting order algorithm */ 2046 EXTERN time_t MinQueueAge; /* min delivery interval */ 2047 #if _FFR_EXPDELAY 2048 EXTERN time_t MaxQueueAge; /* max delivery interval */ 2049 #endif /* _FFR_EXPDELAY */ 2050 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 2051 EXTERN char *QueueDir; /* location of queue directory */ 2052 EXTERN QUEUE_CHAR *QueueLimitId; /* limit queue run to id */ 2053 EXTERN QUEUE_CHAR *QueueLimitQuarantine; /* limit queue run to quarantine reason */ 2054 EXTERN QUEUE_CHAR *QueueLimitRecipient; /* limit queue run to rcpt */ 2055 EXTERN QUEUE_CHAR *QueueLimitSender; /* limit queue run to sender */ 2056 EXTERN QUEUEGRP *Queue[MAXQUEUEGROUPS + 1]; /* queue groups */ 2057 2058 /* functions */ 2059 extern void assign_queueid __P((ENVELOPE *)); 2060 extern ADDRESS *copyqueue __P((ADDRESS *, SM_RPOOL_T *)); 2061 extern void cleanup_queues __P((void)); 2062 extern bool doqueuerun __P((void)); 2063 extern void initsys __P((ENVELOPE *)); 2064 extern void loseqfile __P((ENVELOPE *, char *)); 2065 extern int name2qid __P((char *)); 2066 extern char *qid_printname __P((ENVELOPE *)); 2067 extern char *qid_printqueue __P((int, int)); 2068 extern void quarantine_queue __P((char *, int)); 2069 extern char *queuename __P((ENVELOPE *, int)); 2070 extern void queueup __P((ENVELOPE *, bool, bool)); 2071 extern bool runqueue __P((bool, bool, bool, bool)); 2072 extern bool run_work_group __P((int, int)); 2073 extern void set_def_queueval __P((QUEUEGRP *, bool)); 2074 extern void setup_queues __P((bool)); 2075 extern bool setnewqueue __P((ENVELOPE *)); 2076 extern bool shouldqueue __P((long, time_t)); 2077 extern void sync_queue_time __P((void)); 2078 extern void init_qid_alg __P((void)); 2079 extern int print_single_queue __P((int, int)); 2080 #if REQUIRES_DIR_FSYNC 2081 # define SYNC_DIR(path, panic) sync_dir(path, panic) 2082 extern void sync_dir __P((char *, bool)); 2083 #else /* REQUIRES_DIR_FSYNC */ 2084 # define SYNC_DIR(path, panic) ((void) 0) 2085 #endif /* REQUIRES_DIR_FSYNC */ 2086 2087 /* 2088 ** Timeouts 2089 ** 2090 ** Indicated values are the MINIMUM per RFC 1123 section 5.3.2. 2091 */ 2092 2093 EXTERN struct 2094 { 2095 /* RFC 1123-specified timeouts [minimum value] */ 2096 time_t to_initial; /* initial greeting timeout [5m] */ 2097 time_t to_mail; /* MAIL command [5m] */ 2098 time_t to_rcpt; /* RCPT command [5m] */ 2099 time_t to_datainit; /* DATA initiation [2m] */ 2100 time_t to_datablock; /* DATA block [3m] */ 2101 time_t to_datafinal; /* DATA completion [10m] */ 2102 time_t to_nextcommand; /* next command [5m] */ 2103 /* following timeouts are not mentioned in RFC 1123 */ 2104 time_t to_iconnect; /* initial connection timeout (first try) */ 2105 time_t to_connect; /* initial connection timeout (later tries) */ 2106 time_t to_aconnect; /* all connections timeout (MX and A records) */ 2107 time_t to_rset; /* RSET command */ 2108 time_t to_helo; /* HELO command */ 2109 time_t to_quit; /* QUIT command */ 2110 time_t to_miscshort; /* misc short commands (NOOP, VERB, etc) */ 2111 time_t to_ident; /* IDENT protocol requests */ 2112 time_t to_fileopen; /* opening :include: and .forward files */ 2113 time_t to_control; /* process a control socket command */ 2114 time_t to_lhlo; /* LMTP: LHLO command */ 2115 #if SASL 2116 time_t to_auth; /* AUTH dialogue [10m] */ 2117 #endif /* SASL */ 2118 #if STARTTLS 2119 time_t to_starttls; /* STARTTLS dialogue [10m] */ 2120 #endif /* STARTTLS */ 2121 /* following are per message */ 2122 time_t to_q_return[MAXTOCLASS]; /* queue return timeouts */ 2123 time_t to_q_warning[MAXTOCLASS]; /* queue warning timeouts */ 2124 time_t res_retrans[MAXRESTOTYPES]; /* resolver retransmit */ 2125 int res_retry[MAXRESTOTYPES]; /* resolver retry */ 2126 } TimeOuts; 2127 2128 /* timeout classes for return and warning timeouts */ 2129 #define TOC_NORMAL 0 /* normal delivery */ 2130 #define TOC_URGENT 1 /* urgent delivery */ 2131 #define TOC_NONURGENT 2 /* non-urgent delivery */ 2132 #define TOC_DSN 3 /* DSN delivery */ 2133 2134 /* resolver timeout specifiers */ 2135 #define RES_TO_FIRST 0 /* first attempt */ 2136 #define RES_TO_NORMAL 1 /* subsequent attempts */ 2137 #define RES_TO_DEFAULT 2 /* default value */ 2138 2139 /* functions */ 2140 extern void inittimeouts __P((char *, bool)); 2141 2142 /* 2143 ** Interface probing 2144 */ 2145 2146 #define DPI_PROBENONE 0 /* Don't probe any interfaces */ 2147 #define DPI_PROBEALL 1 /* Probe all interfaces */ 2148 #define DPI_SKIPLOOPBACK 2 /* Don't probe loopback interfaces */ 2149 2150 /* 2151 ** Trace information 2152 */ 2153 2154 /* macros for debugging flags */ 2155 #if NOT_SENDMAIL 2156 # define tTd(flag, level) (tTdvect[flag] >= (unsigned char)level) 2157 #else 2158 # define tTd(flag, level) (tTdvect[flag] >= (unsigned char)level && !IntSig) 2159 #endif 2160 #define tTdlevel(flag) (tTdvect[flag]) 2161 2162 /* variables */ 2163 extern unsigned char tTdvect[100]; /* trace vector */ 2164 2165 /* 2166 ** Miscellaneous information. 2167 */ 2168 2169 /* 2170 ** The "no queue id" queue id for sm_syslog 2171 */ 2172 2173 #define NOQID "" 2174 2175 #define CURHOSTNAME (CurHostName == NULL ? "local" : CurHostName) 2176 2177 /* 2178 ** Some in-line functions 2179 */ 2180 2181 /* set exit status */ 2182 #define setstat(s) \ 2183 do \ 2184 { \ 2185 if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ 2186 ExitStat = s; \ 2187 } while (0) 2188 2189 2190 #define STRUCTCOPY(s, d) d = s 2191 2192 /* free a pointer if it isn't NULL and set it to NULL */ 2193 #define SM_FREE_CLR(p) \ 2194 do \ 2195 { \ 2196 if ((p) != NULL) \ 2197 { \ 2198 sm_free(p); \ 2199 (p) = NULL; \ 2200 } \ 2201 } while (0) 2202 2203 /* 2204 ** Update a permanent string variable with a new value. 2205 ** The old value is freed, the new value is strdup'ed. 2206 ** 2207 ** We use sm_pstrdup_x to duplicate the string because it raises 2208 ** an exception on error, and because it allocates "permanent storage" 2209 ** which is not expected to be freed before process exit. 2210 ** The latter is important for memory leak analysis. 2211 ** 2212 ** If an exception occurs while strdup'ing the new value, 2213 ** then the variable remains set to the old value. 2214 ** That's why the strdup must occur before we free the old value. 2215 ** 2216 ** The macro uses a do loop so that this idiom will work: 2217 ** if (...) 2218 ** PSTRSET(var, val1); 2219 ** else 2220 ** PSTRSET(var, val2); 2221 */ 2222 #define PSTRSET(var, val) \ 2223 do \ 2224 { \ 2225 char *_newval = sm_pstrdup_x(val); \ 2226 if (var != NULL) \ 2227 sm_free(var); \ 2228 var = _newval; \ 2229 } while (0) 2230 2231 #define _CHECK_RESTART \ 2232 do \ 2233 { \ 2234 if (ShutdownRequest != NULL) \ 2235 shutdown_daemon(); \ 2236 else if (RestartRequest != NULL) \ 2237 restart_daemon(); \ 2238 else if (RestartWorkGroup) \ 2239 restart_marked_work_groups(); \ 2240 } while (0) 2241 2242 # define CHECK_RESTART _CHECK_RESTART 2243 2244 /* reply types (text in SmtpMsgBuffer) */ 2245 #define XS_DEFAULT 0 2246 #define XS_STARTTLS 1 2247 #define XS_AUTH 2 2248 #define XS_GREET 3 2249 #define XS_EHLO 4 2250 #define XS_MAIL 5 2251 #define XS_RCPT 6 2252 #define XS_DATA 7 2253 #define XS_EOM 8 2254 #define XS_DATA2 9 2255 #define XS_RCPT2 10 2256 #define XS_QUIT 15 2257 2258 /* 2259 ** Global variables. 2260 */ 2261 2262 #if _FFR_ADDR_TYPE_MODES 2263 EXTERN bool AddrTypeModes; /* addr_type: extra "mode" information */ 2264 #endif /* _FFR_ADDR_TYPE_MODES */ 2265 EXTERN bool AllowBogusHELO; /* allow syntax errors on HELO command */ 2266 EXTERN bool CheckAliases; /* parse addresses during newaliases */ 2267 #if _FFR_QUEUE_RUN_PARANOIA 2268 EXTERN int CheckQueueRunners; /* check whether queue runners are OK */ 2269 #endif /* _FFR_QUEUE_RUN_PARANOIA */ 2270 EXTERN bool ColonOkInAddr; /* single colon legal in address */ 2271 #if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) 2272 EXTERN bool ConfigFileRead; /* configuration file has been read */ 2273 #endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */ 2274 EXTERN bool DisConnected; /* running with OutChannel redirect to transcript file */ 2275 EXTERN bool DontExpandCnames; /* do not $[...$] expand CNAMEs */ 2276 EXTERN bool DontInitGroups; /* avoid initgroups() because of NIS cost */ 2277 EXTERN bool DontLockReadFiles; /* don't read lock support files */ 2278 EXTERN bool DontPruneRoutes; /* don't prune source routes */ 2279 EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ 2280 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 2281 EXTERN bool GrabTo; /* if set, get recipients from msg */ 2282 EXTERN bool EightBitAddrOK; /* we'll let 8-bit addresses through */ 2283 EXTERN bool HasEightBits; /* has at least one eight bit input byte */ 2284 EXTERN bool HasWildcardMX; /* don't use MX records when canonifying */ 2285 EXTERN bool HoldErrs; /* only output errors to transcript */ 2286 EXTERN bool IgnoreHostStatus; /* ignore long term host status files */ 2287 EXTERN bool IgnrDot; /* don't let dot end messages */ 2288 EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ 2289 EXTERN bool MatchGecos; /* look for user names in gecos field */ 2290 EXTERN bool MeToo; /* send to the sender also */ 2291 EXTERN bool NoAlias; /* suppress aliasing */ 2292 EXTERN bool NoConnect; /* don't connect to non-local mailers */ 2293 EXTERN bool OnlyOneError; /* .... or only want to give one SMTP reply */ 2294 EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ 2295 #if REQUIRES_DIR_FSYNC 2296 EXTERN bool RequiresDirfsync; /* requires fsync() for directory */ 2297 #endif /* REQUIRES_DIR_FSYNC */ 2298 EXTERN bool volatile RestartWorkGroup; /* daemon needs to restart some work groups */ 2299 EXTERN bool RrtImpliesDsn; /* turn Return-Receipt-To: into DSN */ 2300 EXTERN bool SaveFrom; /* save leading "From" lines */ 2301 EXTERN bool SendMIMEErrors; /* send error messages in MIME format */ 2302 EXTERN bool SevenBitInput; /* force 7-bit data on input */ 2303 EXTERN bool SingleLineFromHeader; /* force From: header to be one line */ 2304 EXTERN bool SingleThreadDelivery; /* single thread hosts on delivery */ 2305 EXTERN bool SoftBounce; /* replace 5xy by 4xy (for testing) */ 2306 EXTERN bool volatile StopRequest; /* stop sending output */ 2307 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 2308 EXTERN bool TryNullMXList; /* if we are the best MX, try host directly */ 2309 EXTERN bool UseMSP; /* mail submission: group writable queue ok? */ 2310 EXTERN bool WorkAroundBrokenAAAA; /* some nameservers return SERVFAIL on AAAA queries */ 2311 EXTERN bool UseErrorsTo; /* use Errors-To: header (back compat) */ 2312 EXTERN bool UseNameServer; /* using DNS -- interpret h_errno & MX RRs */ 2313 EXTERN char InetMode; /* default network for daemon mode */ 2314 EXTERN char OpMode; /* operation mode, see below */ 2315 EXTERN char SpaceSub; /* substitution for <lwsp> */ 2316 #if _FFR_BADRCPT_SHUTDOWN 2317 EXTERN int BadRcptShutdown; /* Shutdown connection for rejected RCPTs */ 2318 EXTERN int BadRcptShutdownGood; /* above even when there are good RCPTs */ 2319 #endif /* _FFR_BADRCPT_SHUTDOWN */ 2320 EXTERN int BadRcptThrottle; /* Throttle rejected RCPTs per SMTP message */ 2321 #if _FFR_RCPTTHROTDELAY 2322 EXTERN unsigned int BadRcptThrottleDelay; /* delay for BadRcptThrottle */ 2323 #else 2324 # define BadRcptThrottleDelay 1 2325 #endif /* _FFR_RCPTTHROTDELAY */ 2326 EXTERN int CheckpointInterval; /* queue file checkpoint interval */ 2327 EXTERN int ConfigLevel; /* config file level */ 2328 EXTERN int ConnRateThrottle; /* throttle for SMTP connection rate */ 2329 EXTERN int volatile CurChildren; /* current number of daemonic children */ 2330 EXTERN int CurrentLA; /* current load average */ 2331 EXTERN int DefaultNotify; /* default DSN notification flags */ 2332 EXTERN int DelayLA; /* load average to delay connections */ 2333 EXTERN int DontProbeInterfaces; /* don't probe interfaces for names */ 2334 EXTERN int Errors; /* set if errors (local to single pass) */ 2335 EXTERN int ExitStat; /* exit status code */ 2336 EXTERN int FastSplit; /* fast initial splitting of envelopes */ 2337 EXTERN int FileMode; /* mode on files */ 2338 EXTERN int LineNumber; /* line number in current input */ 2339 EXTERN int LogLevel; /* level of logging to perform */ 2340 EXTERN int MaxAliasRecursion; /* maximum depth of alias recursion */ 2341 EXTERN int MaxChildren; /* maximum number of daemonic children */ 2342 EXTERN int MaxForwardEntries; /* maximum number of forward entries */ 2343 EXTERN int MaxHeadersLength; /* max length of headers */ 2344 EXTERN int MaxHopCount; /* max # of hops until bounce */ 2345 EXTERN int MaxMacroRecursion; /* maximum depth of macro recursion */ 2346 EXTERN int MaxMimeFieldLength; /* maximum MIME field length */ 2347 EXTERN int MaxMimeHeaderLength; /* maximum MIME header length */ 2348 EXTERN int MaxNOOPCommands; /* max "noise" commands before slowdown */ 2349 2350 EXTERN int MaxRcptPerMsg; /* max recipients per SMTP message */ 2351 EXTERN int MaxRuleRecursion; /* maximum depth of ruleset recursion */ 2352 #if _FFR_MSG_ACCEPT 2353 EXTERN char *MessageAccept; /* "Message accepted for delivery" reply text */ 2354 #endif /* _FFR_MSG_ACCEPT */ 2355 2356 EXTERN int MimeMode; /* MIME processing mode */ 2357 EXTERN int NoRecipientAction; 2358 2359 #if SM_CONF_SHM 2360 EXTERN int Numfilesys; /* number of queue file systems */ 2361 EXTERN int *PNumFileSys; 2362 # define NumFileSys (*PNumFileSys) 2363 # else /* SM_CONF_SHM */ 2364 EXTERN int NumFileSys; /* number of queue file systems */ 2365 # endif /* SM_CONF_SHM */ 2366 2367 EXTERN int QueueLA; /* load average starting forced queueing */ 2368 EXTERN int RefuseLA; /* load average refusing connections */ 2369 EXTERN time_t RejectLogInterval; /* time btwn log msgs while refusing */ 2370 #if _FFR_MEMSTAT 2371 EXTERN long QueueLowMem; /* low memory starting forced queueing */ 2372 EXTERN long RefuseLowMem; /* low memory refusing connections */ 2373 EXTERN char *MemoryResource;/* memory resource to look up */ 2374 #endif /* _FFR_MEMSTAT */ 2375 EXTERN int SuperSafe; /* be extra careful, even if expensive */ 2376 EXTERN int VendorCode; /* vendor-specific operation enhancements */ 2377 EXTERN int Verbose; /* set if blow-by-blow desired */ 2378 EXTERN gid_t DefGid; /* default gid to run as */ 2379 EXTERN gid_t RealGid; /* real gid of caller */ 2380 EXTERN gid_t RunAsGid; /* GID to become for bulk of run */ 2381 EXTERN gid_t EffGid; /* effective gid */ 2382 #if SM_CONF_SHM 2383 EXTERN key_t ShmKey; /* shared memory key */ 2384 EXTERN char *ShmKeyFile; /* shared memory key file */ 2385 #endif /* SM_CONF_SHM */ 2386 EXTERN pid_t CurrentPid; /* current process id */ 2387 EXTERN pid_t DaemonPid; /* process id of daemon */ 2388 EXTERN pid_t PidFilePid; /* daemon/queue runner who wrote pid file */ 2389 EXTERN uid_t DefUid; /* default uid to run as */ 2390 EXTERN uid_t RealUid; /* real uid of caller */ 2391 EXTERN uid_t RunAsUid; /* UID to become for bulk of run */ 2392 EXTERN uid_t TrustedUid; /* uid of trusted user for files and startup */ 2393 EXTERN size_t DataFileBufferSize; /* size of buf for in-core data file */ 2394 EXTERN time_t DeliverByMin; /* deliver by minimum time */ 2395 EXTERN time_t DialDelay; /* delay between dial-on-demand tries */ 2396 EXTERN time_t SafeAlias; /* interval to wait until @:@ in alias file */ 2397 EXTERN time_t ServiceCacheMaxAge; /* refresh interval for cache */ 2398 EXTERN size_t XscriptFileBufferSize; /* size of buf for in-core transcript file */ 2399 EXTERN MODE_T OldUmask; /* umask when sendmail starts up */ 2400 EXTERN long MaxMessageSize; /* advertised max size we will accept */ 2401 EXTERN long MinBlocksFree; /* min # of blocks free on queue fs */ 2402 EXTERN long QueueFactor; /* slope of queue function */ 2403 EXTERN long WkClassFact; /* multiplier for message class -> priority */ 2404 EXTERN long WkRecipFact; /* multiplier for # of recipients -> priority */ 2405 EXTERN long WkTimeFact; /* priority offset each time this job is run */ 2406 EXTERN char *ControlSocketName; /* control socket filename [control.c] */ 2407 EXTERN char *CurHostName; /* current host we are dealing with */ 2408 EXTERN char *DeadLetterDrop; /* path to dead letter office */ 2409 EXTERN char *DefUser; /* default user to run as (from DefUid) */ 2410 EXTERN char *DefaultCharSet; /* default character set for MIME */ 2411 EXTERN char *DoubleBounceAddr; /* where to send double bounces */ 2412 EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ 2413 EXTERN char *FallbackMX; /* fall back MX host */ 2414 EXTERN char *FallbackSmartHost; /* fall back smart host */ 2415 EXTERN char *FileName; /* name to print on error messages */ 2416 EXTERN char *ForwardPath; /* path to search for .forward files */ 2417 EXTERN char *HeloName; /* hostname to announce in HELO */ 2418 EXTERN char *HelpFile; /* location of SMTP help file */ 2419 EXTERN char *HostStatDir; /* location of host status information */ 2420 EXTERN char *HostsFile; /* path to /etc/hosts file */ 2421 extern char *Mbdb; /* mailbox database type */ 2422 EXTERN char *MustQuoteChars; /* quote these characters in phrases */ 2423 EXTERN char *MyHostName; /* name of this host for SMTP messages */ 2424 EXTERN char *OperatorChars; /* operators (old $o macro) */ 2425 EXTERN char *PidFile; /* location of proc id file [conf.c] */ 2426 EXTERN char *PostMasterCopy; /* address to get errs cc's */ 2427 EXTERN char *ProcTitlePrefix; /* process title prefix */ 2428 EXTERN char *RealHostName; /* name of host we are talking to */ 2429 EXTERN char *RealUserName; /* real user name of caller */ 2430 EXTERN char *volatile RestartRequest;/* a sendmail restart has been requested */ 2431 EXTERN char *RunAsUserName; /* user to become for bulk of run */ 2432 EXTERN char *SafeFileEnv; /* chroot location for file delivery */ 2433 EXTERN char *ServiceSwitchFile; /* backup service switch */ 2434 EXTERN char *volatile ShutdownRequest;/* a sendmail shutdown has been requested */ 2435 EXTERN bool volatile IntSig; 2436 EXTERN char *SmtpGreeting; /* SMTP greeting message (old $e macro) */ 2437 EXTERN char *SmtpPhase; /* current phase in SMTP processing */ 2438 EXTERN char SmtpError[MAXLINE]; /* save failure error messages */ 2439 EXTERN char *StatFile; /* location of statistics summary */ 2440 EXTERN char *TimeZoneSpec; /* override time zone specification */ 2441 EXTERN char *UdbSpec; /* user database source spec */ 2442 EXTERN char *UnixFromLine; /* UNIX From_ line (old $l macro) */ 2443 EXTERN char **ExternalEnviron; /* saved user (input) environment */ 2444 EXTERN char **SaveArgv; /* argument vector for re-execing */ 2445 EXTERN BITMAP256 DontBlameSendmail; /* DontBlameSendmail bits */ 2446 EXTERN SM_FILE_T *InChannel; /* input connection */ 2447 EXTERN SM_FILE_T *OutChannel; /* output connection */ 2448 EXTERN SM_FILE_T *TrafficLogFile; /* file in which to log all traffic */ 2449 #if HESIOD 2450 EXTERN void *HesiodContext; 2451 #endif /* HESIOD */ 2452 EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ 2453 EXTERN char *RuleSetNames[MAXRWSETS]; /* ruleset number to name */ 2454 EXTERN char *UserEnviron[MAXUSERENVIRON + 1]; 2455 EXTERN struct rewrite *RewriteRules[MAXRWSETS]; 2456 EXTERN struct termescape TermEscape; /* terminal escape codes */ 2457 EXTERN SOCKADDR ConnectOnlyTo; /* override connection address (for testing) */ 2458 EXTERN SOCKADDR RealHostAddr; /* address of host we are talking to */ 2459 extern const SM_EXC_TYPE_T EtypeQuickAbort; /* type of a QuickAbort exception */ 2460 2461 2462 EXTERN int ConnectionRateWindowSize; 2463 #if STARTTLS && USE_OPENSSL_ENGINE 2464 EXTERN bool SSLEngineInitialized; 2465 #endif /* STARTTLS && USE_OPENSSL_ENGINE */ 2466 2467 /* 2468 ** Declarations of useful functions 2469 */ 2470 2471 /* Transcript file */ 2472 extern void closexscript __P((ENVELOPE *)); 2473 extern void openxscript __P((ENVELOPE *)); 2474 2475 /* error related */ 2476 extern void buffer_errors __P((void)); 2477 extern void flush_errors __P((bool)); 2478 extern void PRINTFLIKE(1, 2) message __P((const char *, ...)); 2479 extern void PRINTFLIKE(1, 2) nmessage __P((const char *, ...)); 2480 extern void PRINTFLIKE(1, 2) syserr __P((const char *, ...)); 2481 extern void PRINTFLIKE(2, 3) usrerrenh __P((char *, const char *, ...)); 2482 extern void PRINTFLIKE(1, 2) usrerr __P((const char *, ...)); 2483 extern int isenhsc __P((const char *, int)); 2484 extern int extenhsc __P((const char *, int, char *)); 2485 2486 /* alias file */ 2487 extern void alias __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 2488 extern bool aliaswait __P((MAP *, char *, bool)); 2489 extern void forward __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 2490 extern void readaliases __P((MAP *, SM_FILE_T *, bool, bool)); 2491 extern bool rebuildaliases __P((MAP *, bool)); 2492 extern void setalias __P((char *)); 2493 2494 /* logging */ 2495 extern void logdelivery __P((MAILER *, MCI *, char *, const char *, ADDRESS *, time_t, ENVELOPE *)); 2496 extern void logsender __P((ENVELOPE *, char *)); 2497 extern void PRINTFLIKE(3, 4) sm_syslog __P((int, const char *, const char *, ...)); 2498 2499 /* SMTP */ 2500 extern void giveresponse __P((int, char *, MAILER *, MCI *, ADDRESS *, time_t, ENVELOPE *, ADDRESS *)); 2501 extern int reply __P((MAILER *, MCI *, ENVELOPE *, time_t, void (*)__P((char *, bool, MAILER *, MCI *, ENVELOPE *)), char **, int)); 2502 extern void smtp __P((char *volatile, BITMAP256, ENVELOPE *volatile)); 2503 #if SASL 2504 extern int smtpauth __P((MAILER *, MCI *, ENVELOPE *)); 2505 #endif /* SASL */ 2506 extern int smtpdata __P((MAILER *, MCI *, ENVELOPE *, ADDRESS *, time_t)); 2507 extern int smtpgetstat __P((MAILER *, MCI *, ENVELOPE *)); 2508 extern int smtpmailfrom __P((MAILER *, MCI *, ENVELOPE *)); 2509 extern void smtpmessage __P((char *, MAILER *, MCI *, ...)); 2510 extern void smtpinit __P((MAILER *, MCI *, ENVELOPE *, bool)); 2511 extern char *smtptodsn __P((int)); 2512 extern int smtpprobe __P((MCI *)); 2513 extern void smtpquit __P((MAILER *, MCI *, ENVELOPE *)); 2514 extern int smtprcpt __P((ADDRESS *, MAILER *, MCI *, ENVELOPE *, ADDRESS *, time_t)); 2515 extern void smtprset __P((MAILER *, MCI *, ENVELOPE *)); 2516 2517 #define REPLYTYPE(r) ((r) / 100) /* first digit of reply code */ 2518 #define REPLYCLASS(r) (((r) / 10) % 10) /* second digit of reply code */ 2519 #define REPLYMINOR(r) ((r) % 10) /* last digit of reply code */ 2520 #define ISSMTPCODE(c) (isascii(c[0]) && isdigit(c[0]) && \ 2521 isascii(c[1]) && isdigit(c[1]) && \ 2522 isascii(c[2]) && isdigit(c[2])) 2523 #define ISSMTPREPLY(c) (ISSMTPCODE(c) && \ 2524 (c[3] == ' ' || c[3] == '-' || c[3] == '\0')) 2525 2526 /* delivery */ 2527 extern pid_t dowork __P((int, int, char *, bool, bool, ENVELOPE *)); 2528 extern pid_t doworklist __P((ENVELOPE *, bool, bool)); 2529 extern int endmailer __P((MCI *, ENVELOPE *, char **)); 2530 extern int mailfile __P((char *volatile, MAILER *volatile, ADDRESS *, volatile long, ENVELOPE *)); 2531 extern void sendall __P((ENVELOPE *, int)); 2532 2533 /* stats */ 2534 #define STATS_NORMAL 'n' 2535 #define STATS_QUARANTINE 'q' 2536 #define STATS_REJECT 'r' 2537 #define STATS_CONNECT 'c' 2538 2539 extern void markstats __P((ENVELOPE *, ADDRESS *, int)); 2540 extern void clearstats __P((void)); 2541 extern void poststats __P((char *)); 2542 2543 /* control socket */ 2544 extern void closecontrolsocket __P((bool)); 2545 extern void clrcontrol __P((void)); 2546 extern void control_command __P((int, ENVELOPE *)); 2547 extern int opencontrolsocket __P((void)); 2548 2549 #if MILTER 2550 /* milter functions */ 2551 extern void milter_config __P((char *, struct milter **, int)); 2552 extern void milter_setup __P((char *)); 2553 extern void milter_set_option __P((char *, char *, bool)); 2554 extern bool milter_init __P((ENVELOPE *, char *, milters_T *)); 2555 extern void milter_quit __P((ENVELOPE *)); 2556 extern void milter_abort __P((ENVELOPE *)); 2557 extern char *milter_connect __P((char *, SOCKADDR, ENVELOPE *, char *)); 2558 extern char *milter_helo __P((char *, ENVELOPE *, char *)); 2559 extern char *milter_envfrom __P((char **, ENVELOPE *, char *)); 2560 extern char *milter_data_cmd __P((ENVELOPE *, char *)); 2561 extern char *milter_envrcpt __P((char **, ENVELOPE *, char *, bool)); 2562 extern char *milter_data __P((ENVELOPE *, char *)); 2563 extern char *milter_unknown __P((char *, ENVELOPE *, char *)); 2564 #endif /* MILTER */ 2565 2566 extern char *addquotes __P((char *, SM_RPOOL_T *)); 2567 extern char *arpadate __P((char *)); 2568 extern bool atobool __P((char *)); 2569 extern int atooct __P((char *)); 2570 extern void auth_warning __P((ENVELOPE *, const char *, ...)); 2571 extern int blocksignal __P((int)); 2572 extern bool bitintersect __P((BITMAP256, BITMAP256)); 2573 extern bool bitzerop __P((BITMAP256)); 2574 extern int check_bodytype __P((char *)); 2575 extern void buildfname __P((char *, char *, char *, int)); 2576 extern bool chkclientmodifiers __P((int)); 2577 extern bool chkdaemonmodifiers __P((int)); 2578 extern int checkcompat __P((ADDRESS *, ENVELOPE *)); 2579 #ifdef XDEBUG 2580 extern void checkfd012 __P((char *)); 2581 extern void checkfdopen __P((int, char *)); 2582 #endif /* XDEBUG */ 2583 extern void checkfds __P((char *)); 2584 extern bool chownsafe __P((int, bool)); 2585 extern void cleanstrcpy __P((char *, char *, int)); 2586 #if SM_CONF_SHM 2587 extern void cleanup_shm __P((bool)); 2588 #endif /* SM_CONF_SHM */ 2589 extern void close_sendmail_pid __P((void)); 2590 extern void clrdaemon __P((void)); 2591 extern void collect __P((SM_FILE_T *, bool, HDR **, ENVELOPE *, bool)); 2592 extern bool connection_rate_check __P((SOCKADDR *, ENVELOPE *)); 2593 extern time_t convtime __P((char *, int)); 2594 extern char **copyplist __P((char **, bool, SM_RPOOL_T *)); 2595 extern void copy_class __P((int, int)); 2596 extern int count_open_connections __P((SOCKADDR *)); 2597 extern time_t curtime __P((void)); 2598 extern char *defcharset __P((ENVELOPE *)); 2599 extern char *denlstring __P((char *, bool, bool)); 2600 extern void dferror __P((SM_FILE_T *volatile, char *, ENVELOPE *)); 2601 extern void disconnect __P((int, ENVELOPE *)); 2602 extern void disk_status __P((SM_FILE_T *, char *)); 2603 extern bool dns_getcanonname __P((char *, int, bool, int *, int *)); 2604 extern pid_t dofork __P((void)); 2605 extern int drop_privileges __P((bool)); 2606 extern int dsntoexitstat __P((char *)); 2607 extern void dumpfd __P((int, bool, bool)); 2608 #if SM_HEAP_CHECK 2609 extern void dumpstab __P((void)); 2610 #endif /* SM_HEAP_CHECK */ 2611 extern void dumpstate __P((char *)); 2612 extern bool enoughdiskspace __P((long, ENVELOPE *)); 2613 extern char *exitstat __P((char *)); 2614 extern void fatal_error __P((SM_EXC_T *)); 2615 extern char *fgetfolded __P((char *, int *, SM_FILE_T *)); 2616 extern void fill_fd __P((int, char *)); 2617 extern char *find_character __P((char *, int)); 2618 extern int finduser __P((char *, bool *, SM_MBDB_T *)); 2619 extern void finis __P((bool, bool, volatile int)); 2620 extern void fixcrlf __P((char *, bool)); 2621 extern long freediskspace __P((const char *, long *)); 2622 #if NETINET6 && NEEDSGETIPNODE 2623 extern void freehostent __P((struct hostent *)); 2624 #endif /* NETINET6 && NEEDSGETIPNODE */ 2625 extern char *get_column __P((char *, int, int, char *, int)); 2626 extern char *getauthinfo __P((int, bool *)); 2627 extern int getdtsize __P((void)); 2628 extern int getla __P((void)); 2629 extern char *getmodifiers __P((char *, BITMAP256)); 2630 extern BITMAP256 *getrequests __P((ENVELOPE *)); 2631 extern char *getvendor __P((int)); 2632 extern void help __P((char *, ENVELOPE *)); 2633 extern void init_md __P((int, char **)); 2634 extern void initdaemon __P((void)); 2635 extern void inithostmaps __P((void)); 2636 extern void initmacros __P((ENVELOPE *)); 2637 extern void initsetproctitle __P((int, char **, char **)); 2638 extern void init_vendor_macros __P((ENVELOPE *)); 2639 extern SIGFUNC_DECL intsig __P((int)); 2640 extern bool isloopback __P((SOCKADDR sa)); 2641 extern void load_if_names __P((void)); 2642 extern bool lockfile __P((int, char *, char *, int)); 2643 extern void log_sendmail_pid __P((ENVELOPE *)); 2644 extern void logundelrcpts __P((ENVELOPE *, char *, int, bool)); 2645 extern char lower __P((int)); 2646 extern void makelower __P((char *)); 2647 extern int makeconnection_ds __P((char *, MCI *)); 2648 extern int makeconnection __P((char *, volatile unsigned int, MCI *, ENVELOPE *, time_t)); 2649 extern void makeworkgroups __P((void)); 2650 extern void markfailure __P((ENVELOPE *, ADDRESS *, MCI *, int, bool)); 2651 extern void mark_work_group_restart __P((int, int)); 2652 extern MCI *mci_new __P((SM_RPOOL_T *)); 2653 extern char *munchstring __P((char *, char **, int)); 2654 extern struct hostent *myhostname __P((char *, int)); 2655 extern char *newstr __P((const char *)); 2656 #if NISPLUS 2657 extern char *nisplus_default_domain __P((void)); /* extern for Sun */ 2658 #endif /* NISPLUS */ 2659 extern bool path_is_dir __P((char *, bool)); 2660 extern int pickqdir __P((QUEUEGRP *qg, long fsize, ENVELOPE *e)); 2661 extern char *pintvl __P((time_t, bool)); 2662 extern void printav __P((SM_FILE_T *, char **)); 2663 extern void printmailer __P((SM_FILE_T *, MAILER *)); 2664 extern void printnqe __P((SM_FILE_T *, char *)); 2665 extern void printopenfds __P((bool)); 2666 extern void printqueue __P((void)); 2667 extern void printrules __P((void)); 2668 extern pid_t prog_open __P((char **, int *, ENVELOPE *)); 2669 extern bool putline __P((char *, MCI *)); 2670 extern bool putxline __P((char *, size_t, MCI *, int)); 2671 extern void queueup_macros __P((int, SM_FILE_T *, ENVELOPE *)); 2672 extern void readcf __P((char *, bool, ENVELOPE *)); 2673 extern SIGFUNC_DECL reapchild __P((int)); 2674 extern int releasesignal __P((int)); 2675 extern void resetlimits __P((void)); 2676 extern void restart_daemon __P((void)); 2677 extern void restart_marked_work_groups __P((void)); 2678 extern bool rfc822_string __P((char *)); 2679 extern void rmexpstab __P((void)); 2680 extern bool savemail __P((ENVELOPE *, bool)); 2681 extern void seed_random __P((void)); 2682 extern void sendtoargv __P((char **, ENVELOPE *)); 2683 extern void setclientoptions __P((char *)); 2684 extern bool setdaemonoptions __P((char *)); 2685 extern void setdefaults __P((ENVELOPE *)); 2686 extern void setdefuser __P((void)); 2687 extern bool setvendor __P((char *)); 2688 extern void set_op_mode __P((int)); 2689 extern void setoption __P((int, char *, bool, bool, ENVELOPE *)); 2690 extern sigfunc_t setsignal __P((int, sigfunc_t)); 2691 extern void sm_setuserenv __P((const char *, const char *)); 2692 extern void settime __P((ENVELOPE *)); 2693 #if STARTTLS 2694 extern void set_tls_rd_tmo __P((int)); 2695 #else /* STARTTLS */ 2696 #define set_tls_rd_tmo(rd_tmo) 2697 #endif /* STARTTLS */ 2698 extern char *sfgets __P((char *, int, SM_FILE_T *, time_t, char *)); 2699 extern char *shortenstring __P((const char *, size_t)); 2700 extern char *shorten_hostname __P((char [])); 2701 extern bool shorten_rfc822_string __P((char *, size_t)); 2702 extern void shutdown_daemon __P((void)); 2703 extern void sm_closefrom __P((int lowest, int highest)); 2704 extern void sm_close_on_exec __P((int lowest, int highest)); 2705 extern struct hostent *sm_gethostbyname __P((char *, int)); 2706 extern struct hostent *sm_gethostbyaddr __P((char *, int, int)); 2707 extern void sm_getla __P((void)); 2708 extern struct passwd *sm_getpwnam __P((char *)); 2709 extern struct passwd *sm_getpwuid __P((UID_T)); 2710 extern void sm_setproctitle __P((bool, ENVELOPE *, const char *, ...)); 2711 extern pid_t sm_wait __P((int *)); 2712 extern bool split_by_recipient __P((ENVELOPE *e)); 2713 extern void stop_sendmail __P((void)); 2714 extern void stripbackslash __P((char *)); 2715 extern bool strreplnonprt __P((char *, int)); 2716 extern bool strcontainedin __P((bool, char *, char *)); 2717 extern int switch_map_find __P((char *, char *[], short [])); 2718 #if STARTTLS 2719 extern void tls_set_verify __P((SSL_CTX *, SSL *, bool)); 2720 #endif /* STARTTLS */ 2721 extern bool transienterror __P((int)); 2722 extern void truncate_at_delim __P((char *, size_t, int)); 2723 extern void tTflag __P((char *)); 2724 extern void tTsetup __P((unsigned char *, unsigned int, char *)); 2725 extern SIGFUNC_DECL tick __P((int)); 2726 extern char *ttypath __P((void)); 2727 extern void unlockqueue __P((ENVELOPE *)); 2728 #if !HASUNSETENV 2729 extern void unsetenv __P((char *)); 2730 #endif /* !HASUNSETENV */ 2731 2732 /* update file system information: +/- some blocks */ 2733 #if SM_CONF_SHM 2734 extern void upd_qs __P((ENVELOPE *, int, int, char *)); 2735 # define updfs(e, count, space, where) upd_qs(e, count, space, where) 2736 #else /* SM_CONF_SHM */ 2737 # define updfs(e, count, space, where) 2738 # define upd_qs(e, count, space, where) 2739 #endif /* SM_CONF_SHM */ 2740 2741 extern char *username __P((void)); 2742 extern bool usershellok __P((char *, char *)); 2743 extern void vendor_post_defaults __P((ENVELOPE *)); 2744 extern void vendor_pre_defaults __P((ENVELOPE *)); 2745 extern int waitfor __P((pid_t)); 2746 extern bool writable __P((char *, ADDRESS *, long)); 2747 #if SM_HEAP_CHECK 2748 # define xalloc(size) xalloc_tagged(size, __FILE__, __LINE__) 2749 extern char *xalloc_tagged __P((int, char*, int)); 2750 #else /* SM_HEAP_CHECK */ 2751 extern char *xalloc __P((int)); 2752 #endif /* SM_HEAP_CHECK */ 2753 extern void xputs __P((SM_FILE_T *, const char *)); 2754 extern char *xtextify __P((char *, char *)); 2755 extern bool xtextok __P((char *)); 2756 extern int xunlink __P((char *)); 2757 extern char *xuntextify __P((char *)); 2758 2759 2760 #undef EXTERN 2761 #endif /* ! _SENDMAIL_H */ 2762