1 /* 2 * Copyright (c) 1998-2013 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 8.1101 2013/03/15 17:54:12 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 # if _FFR_FIPSMODE 128 # define RSA_KEYLENGTH 1024 129 # else /* _FFR_FIPSMODE */ 130 # define RSA_KEYLENGTH 512 131 # endif /* _FFR_FIPSMODE */ 132 # endif /* !TLS_NO_RSA */ 133 #endif /* STARTTLS */ 134 135 #if SASL /* include the sasl include files if we have them */ 136 137 138 # if SASL == 2 || SASL >= 20000 139 # include <sasl/sasl.h> 140 # include <sasl/saslplug.h> 141 # include <sasl/saslutil.h> 142 # if SASL_VERSION_FULL < 0x020119 143 typedef int (*sasl_callback_ft)(void); 144 # endif 145 # else /* SASL == 2 || SASL >= 20000 */ 146 # include <sasl.h> 147 # include <saslutil.h> 148 typedef int (*sasl_callback_ft)(void); 149 # endif /* SASL == 2 || SASL >= 20000 */ 150 # if defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) 151 # define SASL_VERSION (SASL_VERSION_MAJOR * 10000) + (SASL_VERSION_MINOR * 100) + SASL_VERSION_STEP 152 # if SASL == 1 || SASL == 2 153 # undef SASL 154 # define SASL SASL_VERSION 155 # else /* SASL == 1 || SASL == 2 */ 156 # if SASL != SASL_VERSION 157 ERROR README: -DSASL (SASL) does not agree with the version of the CYRUS_SASL library (SASL_VERSION) 158 ERROR README: see README! 159 # endif /* SASL != SASL_VERSION */ 160 # endif /* SASL == 1 || SASL == 2 */ 161 # else /* defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) */ 162 # if SASL == 1 163 ERROR README: please set -DSASL to the version of the CYRUS_SASL library 164 ERROR README: see README! 165 # endif /* SASL == 1 */ 166 # endif /* defined(SASL_VERSION_MAJOR) && defined(SASL_VERSION_MINOR) && defined(SASL_VERSION_STEP) */ 167 #endif /* SASL */ 168 169 /* 170 ** Following are "sort of" configuration constants, but they should 171 ** be pretty solid on most architectures today. They have to be 172 ** defined after <arpa/nameser.h> because some versions of that 173 ** file also define them. In all cases, we can't use sizeof because 174 ** some systems (e.g., Crays) always treat everything as being at 175 ** least 64 bits. 176 */ 177 178 #ifndef INADDRSZ 179 # define INADDRSZ 4 /* size of an IPv4 address in bytes */ 180 #endif /* ! INADDRSZ */ 181 #ifndef IN6ADDRSZ 182 # define IN6ADDRSZ 16 /* size of an IPv6 address in bytes */ 183 #endif /* ! IN6ADDRSZ */ 184 #ifndef INT16SZ 185 # define INT16SZ 2 /* size of a 16 bit integer in bytes */ 186 #endif /* ! INT16SZ */ 187 #ifndef INT32SZ 188 # define INT32SZ 4 /* size of a 32 bit integer in bytes */ 189 #endif /* ! INT32SZ */ 190 #ifndef INADDR_LOOPBACK 191 # define INADDR_LOOPBACK 0x7f000001 /* loopback address */ 192 #endif /* ! INADDR_LOOPBACK */ 193 194 /* 195 ** Error return from inet_addr(3), in case not defined in /usr/include. 196 */ 197 198 #ifndef INADDR_NONE 199 # define INADDR_NONE 0xffffffff 200 #endif /* ! INADDR_NONE */ 201 202 203 /* (f)open() modes for queue files */ 204 # define QF_O_EXTRA 0 205 206 207 /* 208 ** An 'argument class' describes the storage allocation status 209 ** of an object pointed to by an argument to a function. 210 */ 211 212 typedef enum 213 { 214 A_HEAP, /* the storage was allocated by malloc, and the 215 * ownership of the storage is ceded by the caller 216 * to the called function. */ 217 A_TEMP, /* The storage is temporary, and is only guaranteed 218 * to be valid for the duration of the function call. */ 219 A_PERM /* The storage is 'permanent': this might mean static 220 * storage, or rpool storage. */ 221 } ARGCLASS_T; 222 223 /* forward references for prototypes */ 224 typedef struct envelope ENVELOPE; 225 typedef struct mailer MAILER; 226 typedef struct queuegrp QUEUEGRP; 227 228 /* 229 ** Address structure. 230 ** Addresses are stored internally in this structure. 231 */ 232 233 struct address 234 { 235 char *q_paddr; /* the printname for the address */ 236 char *q_user; /* user name */ 237 char *q_ruser; /* real user name, or NULL if q_user */ 238 char *q_host; /* host name */ 239 struct mailer *q_mailer; /* mailer to use */ 240 unsigned long q_flags; /* status flags, see below */ 241 uid_t q_uid; /* user-id of receiver (if known) */ 242 gid_t q_gid; /* group-id of receiver (if known) */ 243 char *q_home; /* home dir (local mailer only) */ 244 char *q_fullname; /* full name if known */ 245 struct address *q_next; /* chain */ 246 struct address *q_alias; /* address this results from */ 247 char *q_owner; /* owner of q_alias */ 248 struct address *q_tchain; /* temporary use chain */ 249 #if PIPELINING 250 struct address *q_pchain; /* chain for pipelining */ 251 #endif /* PIPELINING */ 252 char *q_finalrcpt; /* Final-Recipient: DSN header */ 253 char *q_orcpt; /* ORCPT parameter from RCPT TO: line */ 254 char *q_status; /* status code for DSNs */ 255 char *q_rstatus; /* remote status message for DSNs */ 256 time_t q_statdate; /* date of status messages */ 257 char *q_statmta; /* MTA generating q_rstatus */ 258 short q_state; /* address state, see below */ 259 char *q_signature; /* MX-based sorting value */ 260 int q_qgrp; /* index into queue groups */ 261 int q_qdir; /* queue directory inside group */ 262 char *q_message; /* error message */ 263 }; 264 265 typedef struct address ADDRESS; 266 267 /* bit values for q_flags */ 268 #define QGOODUID 0x00000001 /* the q_uid q_gid fields are good */ 269 #define QPRIMARY 0x00000002 /* set from RCPT or argv */ 270 #define QNOTREMOTE 0x00000004 /* address not for remote forwarding */ 271 #define QSELFREF 0x00000008 /* this address references itself */ 272 #define QBOGUSSHELL 0x00000010 /* user has no valid shell listed */ 273 #define QUNSAFEADDR 0x00000020 /* address acquired via unsafe path */ 274 #define QPINGONSUCCESS 0x00000040 /* give return on successful delivery */ 275 #define QPINGONFAILURE 0x00000080 /* give return on failure */ 276 #define QPINGONDELAY 0x00000100 /* give return on message delay */ 277 #define QHASNOTIFY 0x00000200 /* propagate notify parameter */ 278 #define QRELAYED 0x00000400 /* DSN: relayed to non-DSN aware sys */ 279 #define QEXPANDED 0x00000800 /* DSN: undergone list expansion */ 280 #define QDELIVERED 0x00001000 /* DSN: successful final delivery */ 281 #define QDELAYED 0x00002000 /* DSN: message delayed */ 282 #define QALIAS 0x00004000 /* expanded alias */ 283 #define QBYTRACE 0x00008000 /* DeliverBy: trace */ 284 #define QBYNDELAY 0x00010000 /* DeliverBy: notify, delay */ 285 #define QBYNRELAY 0x00020000 /* DeliverBy: notify, relayed */ 286 #define QTHISPASS 0x40000000 /* temp: address set this pass */ 287 #define QRCPTOK 0x80000000 /* recipient() processed address */ 288 289 #define Q_PINGFLAGS (QPINGONSUCCESS|QPINGONFAILURE|QPINGONDELAY) 290 291 /* values for q_state */ 292 #define QS_OK 0 /* address ok (for now)/not yet tried */ 293 #define QS_SENT 1 /* good address, delivery complete */ 294 #define QS_BADADDR 2 /* illegal address */ 295 #define QS_QUEUEUP 3 /* save address in queue */ 296 #define QS_RETRY 4 /* retry delivery for next MX */ 297 #define QS_VERIFIED 5 /* verified, but not expanded */ 298 299 /* 300 ** Notice: all of the following values are variations of QS_DONTSEND. 301 ** If new states are added, they must be inserted in the proper place! 302 ** See the macro definition of QS_IS_DEAD() down below. 303 */ 304 305 #define QS_DONTSEND 6 /* don't send to this address */ 306 #define QS_EXPANDED 7 /* expanded */ 307 #define QS_SENDER 8 /* message sender (MeToo) */ 308 #define QS_CLONED 9 /* addr cloned to split envelope */ 309 #define QS_DISCARDED 10 /* rcpt discarded (EF_DISCARD) */ 310 #define QS_REPLACED 11 /* maplocaluser()/UserDB replaced */ 311 #define QS_REMOVED 12 /* removed (removefromlist()) */ 312 #define QS_DUPLICATE 13 /* duplicate suppressed */ 313 #define QS_INCLUDED 14 /* :include: delivery */ 314 #define QS_FATALERR 15 /* fatal error, don't deliver */ 315 316 /* address state testing primitives */ 317 #define QS_IS_OK(s) ((s) == QS_OK) 318 #define QS_IS_SENT(s) ((s) == QS_SENT) 319 #define QS_IS_BADADDR(s) ((s) == QS_BADADDR) 320 #define QS_IS_QUEUEUP(s) ((s) == QS_QUEUEUP) 321 #define QS_IS_RETRY(s) ((s) == QS_RETRY) 322 #define QS_IS_VERIFIED(s) ((s) == QS_VERIFIED) 323 #define QS_IS_EXPANDED(s) ((s) == QS_EXPANDED) 324 #define QS_IS_REMOVED(s) ((s) == QS_REMOVED) 325 #define QS_IS_UNDELIVERED(s) ((s) == QS_OK || \ 326 (s) == QS_QUEUEUP || \ 327 (s) == QS_RETRY || \ 328 (s) == QS_VERIFIED) 329 #define QS_IS_UNMARKED(s) ((s) == QS_OK || \ 330 (s) == QS_RETRY) 331 #define QS_IS_SENDABLE(s) ((s) == QS_OK || \ 332 (s) == QS_QUEUEUP || \ 333 (s) == QS_RETRY) 334 #define QS_IS_ATTEMPTED(s) ((s) == QS_QUEUEUP || \ 335 (s) == QS_RETRY || \ 336 (s) == QS_SENT || \ 337 (s) == QS_DISCARDED) 338 #define QS_IS_DEAD(s) ((s) >= QS_DONTSEND) 339 #define QS_IS_TEMPFAIL(s) ((s) == QS_QUEUEUP || (s) == QS_RETRY) 340 341 #define NULLADDR ((ADDRESS *) NULL) 342 343 extern ADDRESS NullAddress; /* a null (template) address [main.c] */ 344 345 /* functions */ 346 extern void cataddr __P((char **, char **, char *, int, int, bool)); 347 extern char *crackaddr __P((char *, ENVELOPE *)); 348 extern bool emptyaddr __P((ADDRESS *)); 349 extern ADDRESS *getctladdr __P((ADDRESS *)); 350 extern int include __P((char *, bool, ADDRESS *, ADDRESS **, int, ENVELOPE *)); 351 extern bool invalidaddr __P((char *, char *, bool)); 352 extern ADDRESS *parseaddr __P((char *, ADDRESS *, int, int, char **, 353 ENVELOPE *, bool)); 354 extern char **prescan __P((char *, int, char[], int, char **, unsigned char *, bool)); 355 extern void printaddr __P((SM_FILE_T *, ADDRESS *, bool)); 356 extern ADDRESS *recipient __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 357 extern char *remotename __P((char *, MAILER *, int, int *, ENVELOPE *)); 358 extern int rewrite __P((char **, int, int, ENVELOPE *, int)); 359 extern bool sameaddr __P((ADDRESS *, ADDRESS *)); 360 extern int sendtolist __P((char *, ADDRESS *, ADDRESS **, int, ENVELOPE *)); 361 #if MILTER 362 extern int removefromlist __P((char *, ADDRESS **, ENVELOPE *)); 363 #endif /* MILTER */ 364 extern void setsender __P((char *, ENVELOPE *, char **, int, bool)); 365 typedef void esmtp_args_F __P((ADDRESS *, char *, char *, ENVELOPE *)); 366 extern void parse_esmtp_args __P((ENVELOPE *, ADDRESS *, char *, char *, 367 char *, char *args[], esmtp_args_F)); 368 extern esmtp_args_F mail_esmtp_args; 369 extern esmtp_args_F rcpt_esmtp_args; 370 extern void reset_mail_esmtp_args __P((ENVELOPE *)); 371 372 /* macro to simplify the common call to rewrite() */ 373 #define REWRITE(pvp, rs, env) rewrite(pvp, rs, 0, env, MAXATOM) 374 375 /* 376 ** Token Tables for prescan 377 */ 378 379 extern unsigned char ExtTokenTab[256]; /* external strings */ 380 extern unsigned char IntTokenTab[256]; /* internal strings */ 381 382 383 /* 384 ** Mailer definition structure. 385 ** Every mailer known to the system is declared in this 386 ** structure. It defines the pathname of the mailer, some 387 ** flags associated with it, and the argument vector to 388 ** pass to it. The flags are defined in conf.c 389 ** 390 ** The argument vector is expanded before actual use. All 391 ** words except the first are passed through the macro 392 ** processor. 393 */ 394 395 struct mailer 396 { 397 char *m_name; /* symbolic name of this mailer */ 398 char *m_mailer; /* pathname of the mailer to use */ 399 char *m_mtatype; /* type of this MTA */ 400 char *m_addrtype; /* type for addresses */ 401 char *m_diagtype; /* type for diagnostics */ 402 BITMAP256 m_flags; /* status flags, see below */ 403 short m_mno; /* mailer number internally */ 404 short m_nice; /* niceness to run at (mostly for prog) */ 405 char **m_argv; /* template argument vector */ 406 short m_sh_rwset; /* rewrite set: sender header addresses */ 407 short m_se_rwset; /* rewrite set: sender envelope addresses */ 408 short m_rh_rwset; /* rewrite set: recipient header addresses */ 409 short m_re_rwset; /* rewrite set: recipient envelope addresses */ 410 char *m_eol; /* end of line string */ 411 long m_maxsize; /* size limit on message to this mailer */ 412 int m_linelimit; /* max # characters per line */ 413 int m_maxdeliveries; /* max deliveries per mailer connection */ 414 char *m_execdir; /* directory to chdir to before execv */ 415 char *m_rootdir; /* directory to chroot to before execv */ 416 uid_t m_uid; /* UID to run as */ 417 gid_t m_gid; /* GID to run as */ 418 char *m_defcharset; /* default character set */ 419 time_t m_wait; /* timeout to wait for end */ 420 int m_maxrcpt; /* max recipients per envelope client-side */ 421 short m_qgrp; /* queue group for this mailer */ 422 }; 423 424 /* bits for m_flags */ 425 #define M_ESMTP 'a' /* run Extended SMTP */ 426 #define M_ALIASABLE 'A' /* user can be LHS of an alias */ 427 #define M_BLANKEND 'b' /* ensure blank line at end of message */ 428 #define M_STRIPBACKSL 'B' /* strip all leading backslashes from user */ 429 #define M_NOCOMMENT 'c' /* don't include comment part of address */ 430 #define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ 431 #define M_NOBRACKET 'd' /* never angle bracket envelope route-addrs */ 432 /* 'D' CF: include Date: */ 433 #define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ 434 #define M_ESCFROM 'E' /* escape From lines to >From */ 435 #define M_FOPT 'f' /* mailer takes picky -f flag */ 436 /* 'F' CF: include From: or Resent-From: */ 437 #define M_NO_NULL_FROM 'g' /* sender of errors should be $g */ 438 #define M_HST_UPPER 'h' /* preserve host case distinction */ 439 #define M_PREHEAD 'H' /* MAIL11V3: preview headers */ 440 #define M_UDBENVELOPE 'i' /* do udbsender rewriting on envelope */ 441 #define M_INTERNAL 'I' /* SMTP to another sendmail site */ 442 #define M_UDBRECIPIENT 'j' /* do udbsender rewriting on recipient lines */ 443 #define M_NOLOOPCHECK 'k' /* don't check for loops in HELO command */ 444 #define M_CHUNKING 'K' /* CHUNKING: reserved for future use */ 445 #define M_LOCALMAILER 'l' /* delivery is to this host */ 446 #define M_LIMITS 'L' /* must enforce SMTP line limits */ 447 #define M_MUSER 'm' /* can handle multiple users at once */ 448 /* 'M' CF: include Message-Id: */ 449 #define M_NHDR 'n' /* don't insert From line */ 450 #define M_MANYSTATUS 'N' /* MAIL11V3: DATA returns multi-status */ 451 #define M_RUNASRCPT 'o' /* always run mailer as recipient */ 452 #define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ 453 /* 'P' CF: include Return-Path: */ 454 #define M_VRFY250 'q' /* VRFY command returns 250 instead of 252 */ 455 #define M_ROPT 'r' /* mailer takes picky -r flag */ 456 #define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */ 457 #define M_STRIPQ 's' /* strip quote chars from user/host */ 458 #define M_SPECIFIC_UID 'S' /* run as specific uid/gid */ 459 #define M_USR_UPPER 'u' /* preserve user case distinction */ 460 #define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ 461 #define M_CONTENT_LEN 'v' /* add Content-Length: header (SVr4) */ 462 /* 'V' UIUC: !-relativize all addresses */ 463 #define M_HASPWENT 'w' /* check for /etc/passwd entry */ 464 #define M_NOHOSTSTAT 'W' /* ignore long term host status information */ 465 /* 'x' CF: include Full-Name: */ 466 #define M_XDOT 'X' /* use hidden-dot algorithm */ 467 #define M_LMTP 'z' /* run Local Mail Transport Protocol */ 468 #define M_DIALDELAY 'Z' /* apply dial delay sleeptime */ 469 #define M_NOMX '0' /* turn off MX lookups */ 470 #define M_NONULLS '1' /* don't send null bytes */ 471 #define M_FSMTP '2' /* force SMTP (no ESMTP even if offered) */ 472 #define M_EBCDIC '3' /* extend Q-P encoding for EBCDIC */ 473 #define M_TRYRULESET5 '5' /* use ruleset 5 after local aliasing */ 474 #define M_7BITHDRS '6' /* strip headers to 7 bits even in 8 bit path */ 475 #define M_7BITS '7' /* use 7-bit path */ 476 #define M_8BITS '8' /* force "just send 8" behaviour */ 477 #define M_MAKE8BIT '9' /* convert 7 -> 8 bit if appropriate */ 478 #define M_CHECKINCLUDE ':' /* check for :include: files */ 479 #define M_CHECKPROG '|' /* check for |program addresses */ 480 #define M_CHECKFILE '/' /* check for /file addresses */ 481 #define M_CHECKUDB '@' /* user can be user database key */ 482 #define M_CHECKHDIR '~' /* SGI: check for valid home directory */ 483 #define M_HOLD '%' /* Hold delivery until ETRN/-qI/-qR/-qS */ 484 #define M_PLUS '+' /* Reserved: Used in mc for adding new flags */ 485 #define M_MINUS '-' /* Reserved: Used in mc for removing flags */ 486 487 /* functions */ 488 extern void initerrmailers __P((void)); 489 extern void makemailer __P((char *)); 490 extern void makequeue __P((char *, bool)); 491 extern void runqueueevent __P((int)); 492 #if _FFR_QUEUE_RUN_PARANOIA 493 extern bool checkqueuerunner __P((void)); 494 #endif /* _FFR_QUEUE_RUN_PARANOIA */ 495 496 EXTERN MAILER *FileMailer; /* ptr to *file* mailer */ 497 EXTERN MAILER *InclMailer; /* ptr to *include* mailer */ 498 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 499 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 500 EXTERN MAILER *Mailer[MAXMAILERS + 1]; 501 502 /* 503 ** Queue group definition structure. 504 ** Every queue group known to the system is declared in this structure. 505 ** It defines the basic pathname of the queue group, some flags 506 ** associated with it, and the argument vector to pass to it. 507 */ 508 509 struct qpaths_s 510 { 511 char *qp_name; /* name of queue dir, relative path */ 512 short qp_subdirs; /* use subdirs? */ 513 short qp_fsysidx; /* file system index of this directory */ 514 # if SM_CONF_SHM 515 int qp_idx; /* index into array for queue information */ 516 # endif /* SM_CONF_SHM */ 517 }; 518 519 typedef struct qpaths_s QPATHS; 520 521 struct queuegrp 522 { 523 char *qg_name; /* symbolic name of this queue group */ 524 525 /* 526 ** For now this is the same across all queue groups. 527 ** Otherwise we have to play around with chdir(). 528 */ 529 530 char *qg_qdir; /* common component of queue directory */ 531 short qg_index; /* queue number internally, index in Queue[] */ 532 int qg_maxqrun; /* max # of jobs in 1 queuerun */ 533 int qg_numqueues; /* number of queues in this queue */ 534 535 /* 536 ** qg_queueintvl == 0 denotes that no individual value is used. 537 ** Whatever accesses this must deal with "<= 0" as 538 ** "not set, use appropriate default". 539 */ 540 541 time_t qg_queueintvl; /* interval for queue runs */ 542 QPATHS *qg_qpaths; /* list of queue directories */ 543 BITMAP256 qg_flags; /* status flags, see below */ 544 short qg_nice; /* niceness for queue run */ 545 int qg_wgrp; /* Assigned to this work group */ 546 int qg_maxlist; /* max items in work queue for this group */ 547 int qg_curnum; /* current number of queue for queue runs */ 548 int qg_maxrcpt; /* max recipients per envelope, 0==no limit */ 549 550 time_t qg_nextrun; /* time for next queue runs */ 551 #if _FFR_QUEUE_GROUP_SORTORDER 552 short qg_sortorder; /* how do we sort this queuerun */ 553 #endif /* _FFR_QUEUE_GROUP_SORTORDER */ 554 #if 0 555 long qg_wkrcptfact; /* multiplier for # recipients -> priority */ 556 long qg_qfactor; /* slope of queue function */ 557 bool qg_doqueuerun; /* XXX flag is it time to do a queuerun */ 558 #endif /* 0 */ 559 }; 560 561 /* bits for qg_flags (XXX: unused as of now) */ 562 #define QD_DEFINED ((char) 1) /* queue group has been defined */ 563 #define QD_FORK 'f' /* fork queue runs */ 564 565 extern void filesys_update __P((void)); 566 #if _FFR_ANY_FREE_FS 567 extern bool filesys_free __P((long)); 568 #endif /* _FFR_ANY_FREE_FS */ 569 570 #if SASL 571 /* 572 ** SASL 573 */ 574 575 /* lines in authinfo file or index into SASL_AI_T */ 576 # define SASL_WRONG (-1) 577 # define SASL_USER 0 /* authorization id (user) */ 578 # define SASL_AUTHID 1 /* authentication id */ 579 # define SASL_PASSWORD 2 /* password fuer authid */ 580 # define SASL_DEFREALM 3 /* realm to use */ 581 # define SASL_MECHLIST 4 /* list of mechanisms to try */ 582 # define SASL_ID_REALM 5 /* authid@defrealm */ 583 584 /* 585 ** Current mechanism; this is just used to convey information between 586 ** invocation of SASL callback functions. 587 ** It must be last in the list, because it's not allocated by us 588 ** and hence we don't free() it. 589 */ 590 # define SASL_MECH 6 591 # define SASL_ENTRIES 7 /* number of entries in array */ 592 593 # define SASL_USER_BIT (1 << SASL_USER) 594 # define SASL_AUTHID_BIT (1 << SASL_AUTHID) 595 # define SASL_PASSWORD_BIT (1 << SASL_PASSWORD) 596 # define SASL_DEFREALM_BIT (1 << SASL_DEFREALM) 597 # define SASL_MECHLIST_BIT (1 << SASL_MECHLIST) 598 599 /* authenticated? */ 600 # define SASL_NOT_AUTH 0 /* not authenticated */ 601 # define SASL_PROC_AUTH 1 /* in process of authenticating */ 602 # define SASL_IS_AUTH 2 /* authenticated */ 603 604 /* SASL options */ 605 # define SASL_AUTH_AUTH 0x1000 /* use auth= only if authenticated */ 606 # if SASL >= 20101 607 # define SASL_SEC_MASK SASL_SEC_MAXIMUM /* mask for SASL_SEC_* values: sasl.h */ 608 # else /* SASL >= 20101 */ 609 # define SASL_SEC_MASK 0x0fff /* mask for SASL_SEC_* values: sasl.h */ 610 # if (SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 || \ 611 (SASL_SEC_NOACTIVE & SASL_SEC_MASK) == 0 || \ 612 (SASL_SEC_NODICTIONARY & SASL_SEC_MASK) == 0 || \ 613 (SASL_SEC_FORWARD_SECRECY & SASL_SEC_MASK) == 0 || \ 614 (SASL_SEC_NOANONYMOUS & SASL_SEC_MASK) == 0 || \ 615 (SASL_SEC_PASS_CREDENTIALS & SASL_SEC_MASK) == 0 616 ERROR: change SASL_SEC_MASK_ notify sendmail.org! 617 # endif /* SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 ... */ 618 # endif /* SASL >= 20101 */ 619 # define MAXOUTLEN 8192 /* length of output buffer, should be 2^n */ 620 621 /* functions */ 622 extern char *intersect __P((char *, char *, SM_RPOOL_T *)); 623 extern char *iteminlist __P((char *, char *, char *)); 624 # if SASL >= 20000 625 extern int proxy_policy __P((sasl_conn_t *, void *, const char *, unsigned, const char *, unsigned, const char *, unsigned, struct propctx *)); 626 extern int safesaslfile __P((void *, const char *, sasl_verify_type_t)); 627 # else /* SASL >= 20000 */ 628 extern int proxy_policy __P((void *, const char *, const char *, const char **, const char **)); 629 # if SASL > 10515 630 extern int safesaslfile __P((void *, char *, int)); 631 # else /* SASL > 10515 */ 632 extern int safesaslfile __P((void *, char *)); 633 # endif /* SASL > 10515 */ 634 # endif /* SASL >= 20000 */ 635 extern void stop_sasl_client __P((void)); 636 637 /* structure to store authinfo */ 638 typedef char *SASL_AI_T[SASL_ENTRIES]; 639 640 EXTERN char *AuthMechanisms; /* AUTH mechanisms */ 641 EXTERN char *AuthRealm; /* AUTH realm */ 642 EXTERN char *SASLInfo; /* file with AUTH info */ 643 EXTERN int SASLOpts; /* options for SASL */ 644 EXTERN int MaxSLBits; /* max. encryption bits for SASL */ 645 #endif /* SASL */ 646 647 /* 648 ** Structure to store macros. 649 */ 650 typedef struct 651 { 652 SM_RPOOL_T *mac_rpool; /* resource pool */ 653 BITMAP256 mac_allocated; /* storage has been alloc()? */ 654 char *mac_table[MAXMACROID + 1]; /* macros */ 655 } MACROS_T; 656 657 EXTERN MACROS_T GlobalMacros; 658 659 /* 660 ** Information about currently open connections to mailers, or to 661 ** hosts that we have looked up recently. 662 */ 663 664 #define MCI struct mailer_con_info 665 666 MCI 667 { 668 unsigned long mci_flags; /* flag bits, see below */ 669 short mci_errno; /* error number on last connection */ 670 short mci_herrno; /* h_errno from last DNS lookup */ 671 short mci_exitstat; /* exit status from last connection */ 672 short mci_state; /* SMTP state */ 673 int mci_deliveries; /* delivery attempts for connection */ 674 long mci_maxsize; /* max size this server will accept */ 675 SM_FILE_T *mci_in; /* input side of connection */ 676 SM_FILE_T *mci_out; /* output side of connection */ 677 pid_t mci_pid; /* process id of subordinate proc */ 678 char *mci_phase; /* SMTP phase string */ 679 struct mailer *mci_mailer; /* ptr to the mailer for this conn */ 680 char *mci_host; /* host name */ 681 char *mci_status; /* DSN status to be copied to addrs */ 682 char *mci_rstatus; /* SMTP status to be copied to addrs */ 683 time_t mci_lastuse; /* last usage time */ 684 SM_FILE_T *mci_statfile; /* long term status file */ 685 char *mci_heloname; /* name to use as HELO arg */ 686 long mci_min_by; /* minimum DELIVERBY */ 687 bool mci_retryrcpt; /* tempfail for at least one rcpt */ 688 char *mci_tolist; /* list of valid recipients */ 689 SM_RPOOL_T *mci_rpool; /* resource pool */ 690 #if PIPELINING 691 int mci_okrcpts; /* number of valid recipients */ 692 ADDRESS *mci_nextaddr; /* next address for pipelined status */ 693 #endif /* PIPELINING */ 694 #if SASL 695 SASL_AI_T mci_sai; /* authentication info */ 696 bool mci_sasl_auth; /* authenticated? */ 697 int mci_sasl_string_len; 698 char *mci_sasl_string; /* sasl reply string */ 699 char *mci_saslcap; /* SASL list of mechanisms */ 700 sasl_conn_t *mci_conn; /* SASL connection */ 701 #endif /* SASL */ 702 #if STARTTLS 703 SSL *mci_ssl; /* SSL connection */ 704 #endif /* STARTTLS */ 705 MACROS_T mci_macro; /* macro definitions */ 706 }; 707 708 709 /* flag bits */ 710 #define MCIF_VALID 0x00000001 /* this entry is valid */ 711 /* 0x00000002 unused, was MCIF_TEMP */ 712 #define MCIF_CACHED 0x00000004 /* currently in open cache */ 713 #define MCIF_ESMTP 0x00000008 /* this host speaks ESMTP */ 714 #define MCIF_EXPN 0x00000010 /* EXPN command supported */ 715 #define MCIF_SIZE 0x00000020 /* SIZE option supported */ 716 #define MCIF_8BITMIME 0x00000040 /* BODY=8BITMIME supported */ 717 #define MCIF_7BIT 0x00000080 /* strip this message to 7 bits */ 718 /* 0x00000100 unused, was MCIF_MULTSTAT: MAIL11V3: handles MULT status */ 719 #define MCIF_INHEADER 0x00000200 /* currently outputing header */ 720 #define MCIF_CVT8TO7 0x00000400 /* convert from 8 to 7 bits */ 721 #define MCIF_DSN 0x00000800 /* DSN extension supported */ 722 #define MCIF_8BITOK 0x00001000 /* OK to send 8 bit characters */ 723 #define MCIF_CVT7TO8 0x00002000 /* convert from 7 to 8 bits */ 724 #define MCIF_INMIME 0x00004000 /* currently reading MIME header */ 725 #define MCIF_AUTH 0x00008000 /* AUTH= supported */ 726 #define MCIF_AUTHACT 0x00010000 /* SASL (AUTH) active */ 727 #define MCIF_ENHSTAT 0x00020000 /* ENHANCEDSTATUSCODES supported */ 728 #define MCIF_PIPELINED 0x00040000 /* PIPELINING supported */ 729 #define MCIF_VERB 0x00080000 /* VERB supported */ 730 #if STARTTLS 731 #define MCIF_TLS 0x00100000 /* STARTTLS supported */ 732 #define MCIF_TLSACT 0x00200000 /* STARTTLS active */ 733 #else /* STARTTLS */ 734 #define MCIF_TLS 0 735 #define MCIF_TLSACT 0 736 #endif /* STARTTLS */ 737 #define MCIF_DLVR_BY 0x00400000 /* DELIVERBY */ 738 #if _FFR_IGNORE_EXT_ON_HELO 739 # define MCIF_HELO 0x00800000 /* we used HELO: ignore extensions */ 740 #endif /* _FFR_IGNORE_EXT_ON_HELO */ 741 #define MCIF_INLONGLINE 0x01000000 /* in the middle of a long line */ 742 #define MCIF_AUTH2 0x02000000 /* got 2 AUTH lines */ 743 #define MCIF_ONLY_EHLO 0x10000000 /* use only EHLO in smtpinit */ 744 745 #define MCIF_EXTENS (MCIF_EXPN | MCIF_SIZE | MCIF_8BITMIME | MCIF_DSN | MCIF_8BITOK | MCIF_AUTH | MCIF_ENHSTAT | MCIF_TLS | MCIF_AUTH2) 746 747 /* states */ 748 #define MCIS_CLOSED 0 /* no traffic on this connection */ 749 #define MCIS_OPENING 1 /* sending initial protocol */ 750 #define MCIS_OPEN 2 /* open, initial protocol sent */ 751 #define MCIS_MAIL 3 /* MAIL command sent */ 752 #define MCIS_RCPT 4 /* RCPT commands being sent */ 753 #define MCIS_DATA 5 /* DATA command sent */ 754 #define MCIS_QUITING 6 /* running quit protocol */ 755 #define MCIS_SSD 7 /* service shutting down */ 756 #define MCIS_ERROR 8 /* I/O error on connection */ 757 758 /* functions */ 759 extern void mci_cache __P((MCI *)); 760 extern void mci_close __P((MCI *, char *where)); 761 extern void mci_dump __P((SM_FILE_T *, MCI *, bool)); 762 extern void mci_dump_all __P((SM_FILE_T *, bool)); 763 extern void mci_flush __P((bool, MCI *)); 764 extern void mci_clr_extensions __P((MCI *)); 765 extern MCI *mci_get __P((char *, MAILER *)); 766 extern int mci_lock_host __P((MCI *)); 767 extern bool mci_match __P((char *, MAILER *)); 768 extern int mci_print_persistent __P((char *, char *)); 769 extern int mci_purge_persistent __P((char *, char *)); 770 extern MCI **mci_scan __P((MCI *)); 771 extern void mci_setstat __P((MCI *, int, char *, char *)); 772 extern void mci_store_persistent __P((MCI *)); 773 extern int mci_traverse_persistent __P((int (*)(char *, char *), char *)); 774 extern void mci_unlock_host __P((MCI *)); 775 776 EXTERN int MaxMciCache; /* maximum entries in MCI cache */ 777 EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ 778 EXTERN time_t MciInfoTimeout; /* how long 'til we retry down hosts */ 779 780 /* 781 ** Header structure. 782 ** This structure is used internally to store header items. 783 */ 784 785 struct header 786 { 787 char *h_field; /* the name of the field */ 788 char *h_value; /* the value of that field */ 789 struct header *h_link; /* the next header */ 790 unsigned char h_macro; /* include header if macro defined */ 791 unsigned long h_flags; /* status bits, see below */ 792 BITMAP256 h_mflags; /* m_flags bits needed */ 793 }; 794 795 typedef struct header HDR; 796 797 /* 798 ** Header information structure. 799 ** Defined in conf.c, this struct declares the header fields 800 ** that have some magic meaning. 801 */ 802 803 struct hdrinfo 804 { 805 char *hi_field; /* the name of the field */ 806 unsigned long hi_flags; /* status bits, see below */ 807 char *hi_ruleset; /* validity check ruleset */ 808 }; 809 810 extern struct hdrinfo HdrInfo[]; 811 812 /* bits for h_flags and hi_flags */ 813 #define H_EOH 0x00000001 /* field terminates header */ 814 #define H_RCPT 0x00000002 /* contains recipient addresses */ 815 #define H_DEFAULT 0x00000004 /* if another value is found, drop this */ 816 #define H_RESENT 0x00000008 /* this address is a "Resent-..." address */ 817 #define H_CHECK 0x00000010 /* check h_mflags against m_flags */ 818 #define H_ACHECK 0x00000020 /* ditto, but always (not just default) */ 819 #define H_FORCE 0x00000040 /* force this field, even if default */ 820 #define H_TRACE 0x00000080 /* this field contains trace information */ 821 #define H_FROM 0x00000100 /* this is a from-type field */ 822 #define H_VALID 0x00000200 /* this field has a validated value */ 823 #define H_RECEIPTTO 0x00000400 /* field has return receipt info */ 824 #define H_ERRORSTO 0x00000800 /* field has error address info */ 825 #define H_CTE 0x00001000 /* field is a content-transfer-encoding */ 826 #define H_CTYPE 0x00002000 /* this is a content-type field */ 827 #define H_BCC 0x00004000 /* Bcc: header: strip value or delete */ 828 #define H_ENCODABLE 0x00008000 /* field can be RFC 1522 encoded */ 829 #define H_STRIPCOMM 0x00010000 /* header check: strip comments */ 830 #define H_BINDLATE 0x00020000 /* only expand macros at deliver */ 831 #define H_USER 0x00040000 /* header came from the user/SMTP */ 832 833 /* bits for chompheader() */ 834 #define CHHDR_DEF 0x0001 /* default header */ 835 #define CHHDR_CHECK 0x0002 /* call ruleset for header */ 836 #define CHHDR_USER 0x0004 /* header from user */ 837 #define CHHDR_QUEUE 0x0008 /* header from queue file */ 838 839 /* functions */ 840 extern void addheader __P((char *, char *, int, ENVELOPE *, bool)); 841 extern unsigned long chompheader __P((char *, int, HDR **, ENVELOPE *)); 842 extern bool commaize __P((HDR *, char *, bool, MCI *, ENVELOPE *, int)); 843 extern HDR *copyheader __P((HDR *, SM_RPOOL_T *)); 844 extern void eatheader __P((ENVELOPE *, bool, bool)); 845 extern char *hvalue __P((char *, HDR *)); 846 extern void insheader __P((int, char *, char *, int, ENVELOPE *, bool)); 847 extern bool isheader __P((char *)); 848 extern bool putfromline __P((MCI *, ENVELOPE *)); 849 extern void setupheaders __P((void)); 850 851 /* 852 ** Performance monitoring 853 */ 854 855 #define TIMERS struct sm_timers 856 857 TIMERS 858 { 859 TIMER ti_overall; /* the whole process */ 860 }; 861 862 863 #define PUSHTIMER(l, t) { if (tTd(98, l)) pushtimer(&t); } 864 #define POPTIMER(l, t) { if (tTd(98, l)) poptimer(&t); } 865 866 /* 867 ** Envelope structure. 868 ** This structure defines the message itself. There is usually 869 ** only one of these -- for the message that we originally read 870 ** and which is our primary interest -- but other envelopes can 871 ** be generated during processing. For example, error messages 872 ** will have their own envelope. 873 */ 874 875 struct envelope 876 { 877 HDR *e_header; /* head of header list */ 878 long e_msgpriority; /* adjusted priority of this message */ 879 time_t e_ctime; /* time message appeared in the queue */ 880 char *e_to; /* (list of) target person(s) */ 881 ADDRESS e_from; /* the person it is from */ 882 char *e_sender; /* e_from.q_paddr w comments stripped */ 883 char **e_fromdomain; /* the domain part of the sender */ 884 ADDRESS *e_sendqueue; /* list of message recipients */ 885 ADDRESS *e_errorqueue; /* the queue for error responses */ 886 887 /* 888 ** Overflow detection is based on < 0, so don't change this 889 ** to unsigned. We don't use unsigned and == ULONG_MAX because 890 ** some libc's don't have strtoul(), see mail_esmtp_args(). 891 */ 892 893 long e_msgsize; /* size of the message in bytes */ 894 char *e_msgid; /* message id (for logging) */ 895 unsigned long e_flags; /* flags, see below */ 896 int e_nrcpts; /* number of recipients */ 897 short e_class; /* msg class (priority, junk, etc.) */ 898 short e_hopcount; /* number of times processed */ 899 short e_nsent; /* number of sends since checkpoint */ 900 short e_sendmode; /* message send mode */ 901 short e_errormode; /* error return mode */ 902 short e_timeoutclass; /* message timeout class */ 903 bool (*e_puthdr)__P((MCI *, HDR *, ENVELOPE *, int)); 904 /* function to put header of message */ 905 bool (*e_putbody)__P((MCI *, ENVELOPE *, char *)); 906 /* function to put body of message */ 907 ENVELOPE *e_parent; /* the message this one encloses */ 908 ENVELOPE *e_sibling; /* the next envelope of interest */ 909 char *e_bodytype; /* type of message body */ 910 SM_FILE_T *e_dfp; /* data file */ 911 char *e_id; /* code for this entry in queue */ 912 #if _FFR_SESSID 913 char *e_sessid; /* session ID for this envelope */ 914 #endif /* _FFR_SESSID */ 915 int e_qgrp; /* queue group (index into queues) */ 916 int e_qdir; /* index into queue directories */ 917 int e_dfqgrp; /* data file queue group index */ 918 int e_dfqdir; /* data file queue directory index */ 919 int e_xfqgrp; /* queue group (index into queues) */ 920 int e_xfqdir; /* index into queue directories (xf) */ 921 SM_FILE_T *e_xfp; /* transcript file */ 922 SM_FILE_T *e_lockfp; /* the lock file for this message */ 923 char *e_message; /* error message; readonly; NULL, 924 * or allocated from e_rpool */ 925 char *e_statmsg; /* stat msg (changes per delivery). 926 * readonly. NULL or allocated from 927 * e_rpool. */ 928 char *e_quarmsg; /* why envelope is quarantined */ 929 char e_qfletter; /* queue file letter on disk */ 930 char *e_msgboundary; /* MIME-style message part boundary */ 931 char *e_origrcpt; /* original recipient (one only) */ 932 char *e_envid; /* envelope id from MAIL FROM: line */ 933 char *e_status; /* DSN status for this message */ 934 time_t e_dtime; /* time of last delivery attempt */ 935 int e_ntries; /* number of delivery attempts */ 936 dev_t e_dfdev; /* data file device (crash recovery) */ 937 ino_t e_dfino; /* data file inode (crash recovery) */ 938 MACROS_T e_macro; /* macro definitions */ 939 MCI *e_mci; /* connection info */ 940 char *e_auth_param; /* readonly; NULL or static storage or 941 * allocated from e_rpool */ 942 TIMERS e_timers; /* per job timers */ 943 long e_deliver_by; /* deliver by */ 944 int e_dlvr_flag; /* deliver by flag */ 945 SM_RPOOL_T *e_rpool; /* resource pool for this envelope */ 946 unsigned int e_features; /* server features */ 947 #if _FFR_MILTER_ENHSC 948 #define ENHSC_LEN 11 949 char e_enhsc[ENHSC_LEN]; /* enhanced status code */ 950 #endif /* _FFR_MILTER_ENHSC */ 951 }; 952 953 #define PRT_NONNEGL(v) ((v) < 0 ? LONG_MAX : (v)) 954 955 /* values for e_flags */ 956 #define EF_OLDSTYLE 0x00000001L /* use spaces (not commas) in hdrs */ 957 #define EF_INQUEUE 0x00000002L /* this message is fully queued */ 958 #define EF_NO_BODY_RETN 0x00000004L /* omit message body on error */ 959 #define EF_CLRQUEUE 0x00000008L /* disk copy is no longer needed */ 960 #define EF_SENDRECEIPT 0x00000010L /* send a return receipt */ 961 #define EF_FATALERRS 0x00000020L /* fatal errors occurred */ 962 #define EF_DELETE_BCC 0x00000040L /* delete Bcc: headers entirely */ 963 #define EF_RESPONSE 0x00000080L /* this is an error or return receipt */ 964 #define EF_RESENT 0x00000100L /* this message is being forwarded */ 965 #define EF_VRFYONLY 0x00000200L /* verify only (don't expand aliases) */ 966 #define EF_WARNING 0x00000400L /* warning message has been sent */ 967 #define EF_QUEUERUN 0x00000800L /* this envelope is from queue */ 968 #define EF_GLOBALERRS 0x00001000L /* treat errors as global */ 969 #define EF_PM_NOTIFY 0x00002000L /* send return mail to postmaster */ 970 #define EF_METOO 0x00004000L /* send to me too */ 971 #define EF_LOGSENDER 0x00008000L /* need to log the sender */ 972 #define EF_NORECEIPT 0x00010000L /* suppress all return-receipts */ 973 #define EF_HAS8BIT 0x00020000L /* at least one 8-bit char in body */ 974 #define EF_NL_NOT_EOL 0x00040000L /* don't accept raw NL as EOLine */ 975 #define EF_CRLF_NOT_EOL 0x00080000L /* don't accept CR-LF as EOLine */ 976 #define EF_RET_PARAM 0x00100000L /* RCPT command had RET argument */ 977 #define EF_HAS_DF 0x00200000L /* set when data file is instantiated */ 978 #define EF_IS_MIME 0x00400000L /* really is a MIME message */ 979 #define EF_DONT_MIME 0x00800000L /* never MIME this message */ 980 #define EF_DISCARD 0x01000000L /* discard the message */ 981 #define EF_TOOBIG 0x02000000L /* message is too big */ 982 #define EF_SPLIT 0x04000000L /* envelope has been split */ 983 #define EF_UNSAFE 0x08000000L /* unsafe: read from untrusted source */ 984 #define EF_TOODEEP 0x10000000L /* message is nested too deep */ 985 986 #define DLVR_NOTIFY 0x01 987 #define DLVR_RETURN 0x02 988 #define DLVR_TRACE 0x10 989 #define IS_DLVR_NOTIFY(e) (((e)->e_dlvr_flag & DLVR_NOTIFY) != 0) 990 #define IS_DLVR_RETURN(e) (((e)->e_dlvr_flag & DLVR_RETURN) != 0) 991 #define IS_DLVR_TRACE(e) (((e)->e_dlvr_flag & DLVR_TRACE) != 0) 992 #define IS_DLVR_BY(e) ((e)->e_dlvr_flag != 0) 993 994 #define BODYTYPE_NONE (0) 995 #define BODYTYPE_7BIT (1) 996 #define BODYTYPE_8BITMIME (2) 997 #define BODYTYPE_ILLEGAL (-1) 998 #define BODYTYPE_VALID(b) ((b) == BODYTYPE_7BIT || (b) == BODYTYPE_8BITMIME) 999 1000 extern ENVELOPE BlankEnvelope; 1001 1002 /* functions */ 1003 extern void clearenvelope __P((ENVELOPE *, bool, SM_RPOOL_T *)); 1004 extern int dropenvelope __P((ENVELOPE *, bool, bool)); 1005 extern ENVELOPE *newenvelope __P((ENVELOPE *, ENVELOPE *, SM_RPOOL_T *)); 1006 extern void clrsessenvelope __P((ENVELOPE *)); 1007 extern void printenvflags __P((ENVELOPE *)); 1008 extern bool putbody __P((MCI *, ENVELOPE *, char *)); 1009 extern bool putheader __P((MCI *, HDR *, ENVELOPE *, int)); 1010 1011 /* 1012 ** Message priority classes. 1013 ** 1014 ** The message class is read directly from the Priority: header 1015 ** field in the message. 1016 ** 1017 ** CurEnv->e_msgpriority is the number of bytes in the message plus 1018 ** the creation time (so that jobs ``tend'' to be ordered correctly), 1019 ** adjusted by the message class, the number of recipients, and the 1020 ** amount of time the message has been sitting around. This number 1021 ** is used to order the queue. Higher values mean LOWER priority. 1022 ** 1023 ** Each priority class point is worth WkClassFact priority points; 1024 ** each recipient is worth WkRecipFact priority points. Each time 1025 ** we reprocess a message the priority is adjusted by WkTimeFact. 1026 ** WkTimeFact should normally decrease the priority so that jobs 1027 ** that have historically failed will be run later; thanks go to 1028 ** Jay Lepreau at Utah for pointing out the error in my thinking. 1029 ** 1030 ** The "class" is this number, unadjusted by the age or size of 1031 ** this message. Classes with negative representations will have 1032 ** error messages thrown away if they are not local. 1033 */ 1034 1035 struct priority 1036 { 1037 char *pri_name; /* external name of priority */ 1038 int pri_val; /* internal value for same */ 1039 }; 1040 1041 EXTERN int NumPriorities; /* pointer into Priorities */ 1042 EXTERN struct priority Priorities[MAXPRIORITIES]; 1043 1044 /* 1045 ** Rewrite rules. 1046 */ 1047 1048 struct rewrite 1049 { 1050 char **r_lhs; /* pattern match */ 1051 char **r_rhs; /* substitution value */ 1052 struct rewrite *r_next;/* next in chain */ 1053 int r_line; /* rule line in sendmail.cf */ 1054 }; 1055 1056 /* 1057 ** Special characters in rewriting rules. 1058 ** These are used internally only. 1059 ** The COND* rules are actually used in macros rather than in 1060 ** rewriting rules, but are given here because they 1061 ** cannot conflict. 1062 */ 1063 1064 /* "out of band" indicator */ 1065 /* sm/sendmail.h #define METAQUOTE ((unsigned char)0377) quotes the next octet */ 1066 1067 /* left hand side items */ 1068 #define MATCHZANY ((unsigned char)0220) /* match zero or more tokens */ 1069 #define MATCHANY ((unsigned char)0221) /* match one or more tokens */ 1070 #define MATCHONE ((unsigned char)0222) /* match exactly one token */ 1071 #define MATCHCLASS ((unsigned char)0223) /* match one token in a class */ 1072 #define MATCHNCLASS ((unsigned char)0224) /* match tokens not in class */ 1073 1074 /* right hand side items */ 1075 #define MATCHREPL ((unsigned char)0225) /* RHS replacement for above */ 1076 #define CANONNET ((unsigned char)0226) /* canonical net, next token */ 1077 #define CANONHOST ((unsigned char)0227) /* canonical host, next token */ 1078 #define CANONUSER ((unsigned char)0230) /* canonical user, next N tokens */ 1079 #define CALLSUBR ((unsigned char)0231) /* call another rewriting set */ 1080 1081 /* conditionals in macros (anywhere) */ 1082 #define CONDIF ((unsigned char)0232) /* conditional if-then */ 1083 #define CONDELSE ((unsigned char)0233) /* conditional else */ 1084 #define CONDFI ((unsigned char)0234) /* conditional fi */ 1085 1086 /* bracket characters for RHS host name lookup */ 1087 #define HOSTBEGIN ((unsigned char)0235) /* hostname lookup begin */ 1088 #define HOSTEND ((unsigned char)0236) /* hostname lookup end */ 1089 1090 /* bracket characters for RHS generalized lookup */ 1091 #define LOOKUPBEGIN ((unsigned char)0205) /* generalized lookup begin */ 1092 #define LOOKUPEND ((unsigned char)0206) /* generalized lookup end */ 1093 1094 /* macro substitution characters (anywhere) */ 1095 #define MACROEXPAND ((unsigned char)0201) /* macro expansion */ 1096 #define MACRODEXPAND ((unsigned char)0202) /* deferred macro expansion */ 1097 1098 /* to make the code clearer */ 1099 #define MATCHZERO CANONHOST 1100 1101 #define MAXMATCH 9 /* max params per rewrite */ 1102 #define MAX_MAP_ARGS 10 /* max arguments for map */ 1103 1104 /* external <==> internal mapping table */ 1105 struct metamac 1106 { 1107 char metaname; /* external code (after $) */ 1108 unsigned char metaval; /* internal code (as above) */ 1109 }; 1110 1111 /* values for macros with external names only */ 1112 #define MID_OPMODE 0202 /* operation mode */ 1113 1114 /* functions */ 1115 #if SM_HEAP_CHECK 1116 extern void 1117 macdefine_tagged __P(( 1118 MACROS_T *_mac, 1119 ARGCLASS_T _vclass, 1120 int _id, 1121 char *_value, 1122 char *_file, 1123 int _line, 1124 int _group)); 1125 # define macdefine(mac,c,id,v) \ 1126 macdefine_tagged(mac,c,id,v,__FILE__,__LINE__,sm_heap_group()) 1127 #else /* SM_HEAP_CHECK */ 1128 extern void 1129 macdefine __P(( 1130 MACROS_T *_mac, 1131 ARGCLASS_T _vclass, 1132 int _id, 1133 char *_value)); 1134 # define macdefine_tagged(mac,c,id,v,file,line,grp) macdefine(mac,c,id,v) 1135 #endif /* SM_HEAP_CHECK */ 1136 extern void macset __P((MACROS_T *, int, char *)); 1137 #define macget(mac, i) (mac)->mac_table[i] 1138 extern void expand __P((char *, char *, size_t, ENVELOPE *)); 1139 extern int macid_parse __P((char *, char **)); 1140 #define macid(name) macid_parse(name, NULL) 1141 extern char *macname __P((int)); 1142 extern char *macvalue __P((int, ENVELOPE *)); 1143 extern int rscheck __P((char *, char *, char *, ENVELOPE *, int, int, char *, char *, ADDRESS *)); 1144 extern int rscap __P((char *, char *, char *, ENVELOPE *, char ***, char *, int)); 1145 extern void setclass __P((int, char *)); 1146 extern int strtorwset __P((char *, char **, int)); 1147 extern char *translate_dollars __P((char *, char *, int *)); 1148 extern bool wordinclass __P((char *, int)); 1149 1150 /* 1151 ** Name canonification short circuit. 1152 ** 1153 ** If the name server for a host is down, the process of trying to 1154 ** canonify the name can hang. This is similar to (but alas, not 1155 ** identical to) looking up the name for delivery. This stab type 1156 ** caches the result of the name server lookup so we don't hang 1157 ** multiple times. 1158 */ 1159 1160 #define NAMECANON struct _namecanon 1161 1162 NAMECANON 1163 { 1164 short nc_errno; /* cached errno */ 1165 short nc_herrno; /* cached h_errno */ 1166 short nc_stat; /* cached exit status code */ 1167 short nc_flags; /* flag bits */ 1168 char *nc_cname; /* the canonical name */ 1169 time_t nc_exp; /* entry expires at */ 1170 }; 1171 1172 /* values for nc_flags */ 1173 #define NCF_VALID 0x0001 /* entry valid */ 1174 1175 /* hostsignature structure */ 1176 1177 struct hostsig_t 1178 { 1179 char *hs_sig; /* hostsignature */ 1180 time_t hs_exp; /* entry expires at */ 1181 }; 1182 1183 typedef struct hostsig_t HOSTSIG_T; 1184 1185 /* 1186 ** The standard udp packet size PACKETSZ (512) is not sufficient for some 1187 ** nameserver answers containing very many resource records. The resolver 1188 ** may switch to tcp and retry if it detects udp packet overflow. 1189 ** Also note that the resolver routines res_query and res_search return 1190 ** the size of the *un*truncated answer in case the supplied answer buffer 1191 ** it not big enough to accommodate the entire answer. 1192 */ 1193 1194 # ifndef MAXPACKET 1195 # define MAXPACKET 8192 /* max packet size used internally by BIND */ 1196 # endif /* ! MAXPACKET */ 1197 1198 /* 1199 ** The resolver functions res_{send,query,querydomain} expect the 1200 ** answer buffer to be aligned, but some versions of gcc4 reverse 1201 ** 25 years of history and no longer align char buffers on the 1202 ** stack, resulting in crashes on strict-alignment platforms. Use 1203 ** this union when putting the buffer on the stack to force the 1204 ** alignment, then cast to (HEADER *) or (unsigned char *) as needed. 1205 */ 1206 typedef union 1207 { 1208 HEADER qb1; 1209 unsigned char qb2[MAXPACKET]; 1210 } querybuf; 1211 1212 /* functions */ 1213 extern bool getcanonname __P((char *, int, bool, int *)); 1214 extern int getmxrr __P((char *, char **, unsigned short *, bool, int *, bool, int *)); 1215 extern char *hostsignature __P((MAILER *, char *)); 1216 extern int getfallbackmxrr __P((char *)); 1217 1218 /* 1219 ** Mapping functions 1220 ** 1221 ** These allow arbitrary mappings in the config file. The idea 1222 ** (albeit not the implementation) comes from IDA sendmail. 1223 */ 1224 1225 #define MAPCLASS struct _mapclass 1226 #define MAP struct _map 1227 #define MAXMAPACTIONS 5 /* size of map_actions array */ 1228 1229 1230 /* 1231 ** An actual map. 1232 */ 1233 1234 MAP 1235 { 1236 MAPCLASS *map_class; /* the class of this map */ 1237 MAPCLASS *map_orgclass; /* the original class of this map */ 1238 char *map_mname; /* name of this map */ 1239 long map_mflags; /* flags, see below */ 1240 char *map_file; /* the (nominal) filename */ 1241 ARBPTR_T map_db1; /* the open database ptr */ 1242 ARBPTR_T map_db2; /* an "extra" database pointer */ 1243 char *map_keycolnm; /* key column name */ 1244 char *map_valcolnm; /* value column name */ 1245 unsigned char map_keycolno; /* key column number */ 1246 unsigned char map_valcolno; /* value column number */ 1247 char map_coldelim; /* column delimiter */ 1248 char map_spacesub; /* spacesub */ 1249 char *map_app; /* to append to successful matches */ 1250 char *map_tapp; /* to append to "tempfail" matches */ 1251 char *map_domain; /* the (nominal) NIS domain */ 1252 char *map_rebuild; /* program to run to do auto-rebuild */ 1253 time_t map_mtime; /* last database modification time */ 1254 time_t map_timeout; /* timeout for map accesses */ 1255 int map_retry; /* # of retries for map accesses */ 1256 pid_t map_pid; /* PID of process which opened map */ 1257 int map_lockfd; /* auxiliary lock file descriptor */ 1258 short map_specificity; /* specificity of aliases */ 1259 MAP *map_stack[MAXMAPSTACK]; /* list for stacked maps */ 1260 short map_return[MAXMAPACTIONS]; /* return bitmaps for stacked maps */ 1261 }; 1262 1263 1264 /* bit values for map_mflags */ 1265 #define MF_VALID 0x00000001 /* this entry is valid */ 1266 #define MF_INCLNULL 0x00000002 /* include null byte in key */ 1267 #define MF_OPTIONAL 0x00000004 /* don't complain if map not found */ 1268 #define MF_NOFOLDCASE 0x00000008 /* don't fold case in keys */ 1269 #define MF_MATCHONLY 0x00000010 /* don't use the map value */ 1270 #define MF_OPEN 0x00000020 /* this entry is open */ 1271 #define MF_WRITABLE 0x00000040 /* open for writing */ 1272 #define MF_ALIAS 0x00000080 /* this is an alias file */ 1273 #define MF_TRY0NULL 0x00000100 /* try with no null byte */ 1274 #define MF_TRY1NULL 0x00000200 /* try with the null byte */ 1275 #define MF_LOCKED 0x00000400 /* this map is currently locked */ 1276 #define MF_ALIASWAIT 0x00000800 /* alias map in aliaswait state */ 1277 #define MF_IMPL_HASH 0x00001000 /* implicit: underlying hash database */ 1278 #define MF_IMPL_NDBM 0x00002000 /* implicit: underlying NDBM database */ 1279 /* 0x00004000 */ 1280 #define MF_APPEND 0x00008000 /* append new entry on rebuild */ 1281 #define MF_KEEPQUOTES 0x00010000 /* don't dequote key before lookup */ 1282 #define MF_NODEFER 0x00020000 /* don't defer if map lookup fails */ 1283 #define MF_REGEX_NOT 0x00040000 /* regular expression negation */ 1284 #define MF_DEFER 0x00080000 /* don't lookup map in defer mode */ 1285 #define MF_SINGLEMATCH 0x00100000 /* successful only if match one key */ 1286 #define MF_SINGLEDN 0x00200000 /* only one match, but multi values */ 1287 #define MF_FILECLASS 0x00400000 /* this is a file class map */ 1288 #define MF_OPENBOGUS 0x00800000 /* open failed, don't call map_close */ 1289 #define MF_CLOSING 0x01000000 /* map is being closed */ 1290 1291 #define DYNOPENMAP(map) \ 1292 do \ 1293 { \ 1294 if (!bitset(MF_OPEN, (map)->map_mflags)) \ 1295 { \ 1296 if (!openmap(map)) \ 1297 return NULL; \ 1298 } \ 1299 } while (0) 1300 1301 1302 /* indices for map_actions */ 1303 #define MA_NOTFOUND 0 /* member map returned "not found" */ 1304 #define MA_UNAVAIL 1 /* member map is not available */ 1305 #define MA_TRYAGAIN 2 /* member map returns temp failure */ 1306 1307 /* macros to handle MapTempFail */ 1308 #define BIT_IS_MTP 0x01 /* temp.failure occurred */ 1309 #define BIT_ASK_MTP 0x02 /* do we care about MapTempFail? */ 1310 #define RESET_MAPTEMPFAIL MapTempFail = 0 1311 #define INIT_MAPTEMPFAIL MapTempFail = BIT_ASK_MTP 1312 #define SET_MAPTEMPFAIL MapTempFail |= BIT_IS_MTP 1313 #define IS_MAPTEMPFAIL bitset(BIT_IS_MTP, MapTempFail) 1314 #define ASK_MAPTEMPFAIL bitset(BIT_ASK_MTP, MapTempFail) 1315 1316 /* 1317 ** The class of a map -- essentially the functions to call 1318 */ 1319 1320 MAPCLASS 1321 { 1322 char *map_cname; /* name of this map class */ 1323 char *map_ext; /* extension for database file */ 1324 short map_cflags; /* flag bits, see below */ 1325 bool (*map_parse)__P((MAP *, char *)); 1326 /* argument parsing function */ 1327 char *(*map_lookup)__P((MAP *, char *, char **, int *)); 1328 /* lookup function */ 1329 void (*map_store)__P((MAP *, char *, char *)); 1330 /* store function */ 1331 bool (*map_open)__P((MAP *, int)); 1332 /* open function */ 1333 void (*map_close)__P((MAP *)); 1334 /* close function */ 1335 }; 1336 1337 /* bit values for map_cflags */ 1338 #define MCF_ALIASOK 0x0001 /* can be used for aliases */ 1339 #define MCF_ALIASONLY 0x0002 /* usable only for aliases */ 1340 #define MCF_REBUILDABLE 0x0004 /* can rebuild alias files */ 1341 #define MCF_OPTFILE 0x0008 /* file name is optional */ 1342 #define MCF_NOTPERSIST 0x0010 /* don't keep map open all the time */ 1343 1344 /* functions */ 1345 extern void closemaps __P((bool)); 1346 extern bool impl_map_open __P((MAP *, int)); 1347 extern void initmaps __P((void)); 1348 extern MAP *makemapentry __P((char *)); 1349 extern void maplocaluser __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 1350 extern char *map_rewrite __P((MAP *, const char *, size_t, char **)); 1351 #if NETINFO 1352 extern char *ni_propval __P((char *, char *, char *, char *, int)); 1353 #endif /* NETINFO */ 1354 extern bool openmap __P((MAP *)); 1355 extern int udbexpand __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 1356 #if USERDB 1357 extern void _udbx_close __P((void)); 1358 extern char *udbsender __P((char *, SM_RPOOL_T *)); 1359 #endif /* USERDB */ 1360 1361 /* 1362 ** LDAP related items 1363 */ 1364 #if LDAPMAP 1365 /* struct defining LDAP Auth Methods */ 1366 struct lamvalues 1367 { 1368 char *lam_name; /* name of LDAP auth method */ 1369 int lam_code; /* numeric code */ 1370 }; 1371 1372 /* struct defining LDAP Alias Dereferencing */ 1373 struct ladvalues 1374 { 1375 char *lad_name; /* name of LDAP alias dereferencing method */ 1376 int lad_code; /* numeric code */ 1377 }; 1378 1379 /* struct defining LDAP Search Scope */ 1380 struct lssvalues 1381 { 1382 char *lss_name; /* name of LDAP search scope */ 1383 int lss_code; /* numeric code */ 1384 }; 1385 1386 /* functions */ 1387 extern bool ldapmap_parseargs __P((MAP *, char *)); 1388 extern void ldapmap_set_defaults __P((char *)); 1389 #endif /* LDAPMAP */ 1390 1391 /* 1392 ** PH related items 1393 */ 1394 1395 #if PH_MAP 1396 1397 # include <phclient.h> 1398 1399 struct ph_map_struct 1400 { 1401 char *ph_servers; /* list of ph servers */ 1402 char *ph_field_list; /* list of fields to search for match */ 1403 PH *ph; /* PH server handle */ 1404 int ph_fastclose; /* send "quit" command on close */ 1405 time_t ph_timeout; /* timeout interval */ 1406 }; 1407 typedef struct ph_map_struct PH_MAP_STRUCT; 1408 1409 #endif /* PH_MAP */ 1410 1411 /* 1412 ** Regular UNIX sockaddrs are too small to handle ISO addresses, so 1413 ** we are forced to declare a supertype here. 1414 */ 1415 1416 #if NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 1417 union bigsockaddr 1418 { 1419 struct sockaddr sa; /* general version */ 1420 # if NETUNIX 1421 struct sockaddr_un sunix; /* UNIX family */ 1422 # endif /* NETUNIX */ 1423 # if NETINET 1424 struct sockaddr_in sin; /* INET family */ 1425 # endif /* NETINET */ 1426 # if NETINET6 1427 struct sockaddr_in6 sin6; /* INET/IPv6 */ 1428 # endif /* NETINET6 */ 1429 # if NETISO 1430 struct sockaddr_iso siso; /* ISO family */ 1431 # endif /* NETISO */ 1432 # if NETNS 1433 struct sockaddr_ns sns; /* XNS family */ 1434 # endif /* NETNS */ 1435 # if NETX25 1436 struct sockaddr_x25 sx25; /* X.25 family */ 1437 # endif /* NETX25 */ 1438 }; 1439 1440 # define SOCKADDR union bigsockaddr 1441 1442 /* functions */ 1443 extern char *anynet_ntoa __P((SOCKADDR *)); 1444 # if NETINET6 1445 extern char *anynet_ntop __P((struct in6_addr *, char *, size_t)); 1446 extern int anynet_pton __P((int, const char *, void *)); 1447 # endif /* NETINET6 */ 1448 extern char *hostnamebyanyaddr __P((SOCKADDR *)); 1449 extern char *validate_connection __P((SOCKADDR *, char *, ENVELOPE *)); 1450 # if SASL >= 20000 1451 extern bool iptostring __P((SOCKADDR *, SOCKADDR_LEN_T, char *, unsigned)); 1452 # endif /* SASL >= 20000 */ 1453 1454 #endif /* NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 */ 1455 1456 /* 1457 ** Process List (proclist) 1458 */ 1459 1460 #define NO_PID ((pid_t) 0) 1461 #ifndef PROC_LIST_SEG 1462 # define PROC_LIST_SEG 32 /* number of pids to alloc at a time */ 1463 #endif /* ! PROC_LIST_SEG */ 1464 1465 /* process types */ 1466 #define PROC_NONE 0 1467 #define PROC_DAEMON 1 1468 #define PROC_DAEMON_CHILD 2 1469 #define PROC_QUEUE 3 1470 #define PROC_QUEUE_CHILD 3 1471 #define PROC_CONTROL 4 1472 #define PROC_CONTROL_CHILD 5 1473 1474 /* functions */ 1475 extern void proc_list_add __P((pid_t, char *, int, int, int, SOCKADDR *)); 1476 extern void proc_list_clear __P((void)); 1477 extern void proc_list_display __P((SM_FILE_T *, char *)); 1478 extern void proc_list_drop __P((pid_t, int, int *)); 1479 extern void proc_list_probe __P((void)); 1480 extern void proc_list_set __P((pid_t, char *)); 1481 extern void proc_list_signal __P((int, int)); 1482 1483 /* 1484 ** Symbol table definitions 1485 */ 1486 1487 struct symtab 1488 { 1489 char *s_name; /* name to be entered */ 1490 short s_symtype; /* general type (see below) */ 1491 struct symtab *s_next; /* pointer to next in chain */ 1492 union 1493 { 1494 BITMAP256 sv_class; /* bit-map of word classes */ 1495 MAILER *sv_mailer; /* pointer to mailer */ 1496 char *sv_alias; /* alias */ 1497 MAPCLASS sv_mapclass; /* mapping function class */ 1498 MAP sv_map; /* mapping function */ 1499 HOSTSIG_T sv_hostsig; /* host signature */ 1500 MCI sv_mci; /* mailer connection info */ 1501 NAMECANON sv_namecanon; /* canonical name cache */ 1502 int sv_macro; /* macro name => id mapping */ 1503 int sv_ruleset; /* ruleset index */ 1504 struct hdrinfo sv_header; /* header metainfo */ 1505 char *sv_service[MAXMAPSTACK]; /* service switch */ 1506 #if LDAPMAP 1507 MAP *sv_lmap; /* Maps for LDAP connection */ 1508 #endif /* LDAPMAP */ 1509 #if SOCKETMAP 1510 MAP *sv_socketmap; /* Maps for SOCKET connection */ 1511 #endif /* SOCKETMAP */ 1512 #if MILTER 1513 struct milter *sv_milter; /* milter filter name */ 1514 #endif /* MILTER */ 1515 QUEUEGRP *sv_queue; /* pointer to queue */ 1516 } s_value; 1517 }; 1518 1519 typedef struct symtab STAB; 1520 1521 /* symbol types */ 1522 #define ST_UNDEF 0 /* undefined type */ 1523 #define ST_CLASS 1 /* class map */ 1524 /* #define ST_unused 2 UNUSED */ 1525 #define ST_MAILER 3 /* a mailer header */ 1526 #define ST_ALIAS 4 /* an alias */ 1527 #define ST_MAPCLASS 5 /* mapping function class */ 1528 #define ST_MAP 6 /* mapping function */ 1529 #define ST_HOSTSIG 7 /* host signature */ 1530 #define ST_NAMECANON 8 /* cached canonical name */ 1531 #define ST_MACRO 9 /* macro name to id mapping */ 1532 #define ST_RULESET 10 /* ruleset index */ 1533 #define ST_SERVICE 11 /* service switch entry */ 1534 #define ST_HEADER 12 /* special header flags */ 1535 #if LDAPMAP 1536 # define ST_LMAP 13 /* List head of maps for LDAP connection */ 1537 #endif /* LDAPMAP */ 1538 #if MILTER 1539 # define ST_MILTER 14 /* milter filter */ 1540 #endif /* MILTER */ 1541 #define ST_QUEUE 15 /* a queue entry */ 1542 1543 #if SOCKETMAP 1544 # define ST_SOCKETMAP 16 /* List head of maps for SOCKET connection */ 1545 #endif /* SOCKETMAP */ 1546 1547 /* This entry must be last */ 1548 #define ST_MCI 17 /* mailer connection info (offset) */ 1549 1550 #define s_class s_value.sv_class 1551 #define s_mailer s_value.sv_mailer 1552 #define s_alias s_value.sv_alias 1553 #define s_mci s_value.sv_mci 1554 #define s_mapclass s_value.sv_mapclass 1555 #define s_hostsig s_value.sv_hostsig 1556 #define s_map s_value.sv_map 1557 #define s_namecanon s_value.sv_namecanon 1558 #define s_macro s_value.sv_macro 1559 #define s_ruleset s_value.sv_ruleset 1560 #define s_service s_value.sv_service 1561 #define s_header s_value.sv_header 1562 #if LDAPMAP 1563 # define s_lmap s_value.sv_lmap 1564 #endif /* LDAPMAP */ 1565 #if SOCKETMAP 1566 # define s_socketmap s_value.sv_socketmap 1567 #endif /* SOCKETMAP */ 1568 #if MILTER 1569 # define s_milter s_value.sv_milter 1570 #endif /* MILTER */ 1571 #define s_quegrp s_value.sv_queue 1572 1573 /* opcodes to stab */ 1574 #define ST_FIND 0 /* find entry */ 1575 #define ST_ENTER 1 /* enter if not there */ 1576 1577 /* functions */ 1578 extern STAB *stab __P((char *, int, int)); 1579 extern void stabapply __P((void (*)(STAB *, int), int)); 1580 1581 /* 1582 ** Operation, send, error, and MIME modes 1583 ** 1584 ** The operation mode describes the basic operation of sendmail. 1585 ** This can be set from the command line, and is "send mail" by 1586 ** default. 1587 ** 1588 ** The send mode tells how to send mail. It can be set in the 1589 ** configuration file. Its setting determines how quickly the 1590 ** mail will be delivered versus the load on your system. If the 1591 ** -v (verbose) flag is given, it will be forced to SM_DELIVER 1592 ** mode. 1593 ** 1594 ** The error mode tells how to return errors. 1595 */ 1596 1597 #define MD_DELIVER 'm' /* be a mail sender */ 1598 #define MD_SMTP 's' /* run SMTP on standard input */ 1599 #define MD_ARPAFTP 'a' /* obsolete ARPANET mode (Grey Book) */ 1600 #define MD_DAEMON 'd' /* run as a daemon */ 1601 #define MD_FGDAEMON 'D' /* run daemon in foreground */ 1602 #define MD_LOCAL 'l' /* like daemon, but localhost only */ 1603 #define MD_VERIFY 'v' /* verify: don't collect or deliver */ 1604 #define MD_TEST 't' /* test mode: resolve addrs only */ 1605 #define MD_INITALIAS 'i' /* initialize alias database */ 1606 #define MD_PRINT 'p' /* print the queue */ 1607 #define MD_PRINTNQE 'P' /* print number of entries in queue */ 1608 #define MD_FREEZE 'z' /* freeze the configuration file */ 1609 #define MD_HOSTSTAT 'h' /* print persistent host stat info */ 1610 #define MD_PURGESTAT 'H' /* purge persistent host stat info */ 1611 #define MD_QUEUERUN 'q' /* queue run */ 1612 #define MD_CHECKCONFIG 'C' /* check configuration file */ 1613 1614 #if _FFR_LOCAL_DAEMON 1615 EXTERN bool LocalDaemon; 1616 # if NETINET6 1617 EXTERN bool V6LoopbackAddrFound; /* found an IPv6 loopback address */ 1618 # define SETV6LOOPBACKADDRFOUND(sa) \ 1619 do \ 1620 { \ 1621 if (isloopback(sa)) \ 1622 V6LoopbackAddrFound = true; \ 1623 } while (0) 1624 # endif /* NETINET6 */ 1625 #else /* _FFR_LOCAL_DAEMON */ 1626 # define LocalDaemon false 1627 # define V6LoopbackAddrFound false 1628 # define SETV6LOOPBACKADDRFOUND(sa) 1629 #endif /* _FFR_LOCAL_DAEMON */ 1630 1631 /* Note: see also include/sendmail/pathnames.h: GET_CLIENT_CF */ 1632 1633 /* values for e_sendmode -- send modes */ 1634 #define SM_DELIVER 'i' /* interactive delivery */ 1635 #define SM_FORK 'b' /* deliver in background */ 1636 #if _FFR_DM_ONE 1637 #define SM_DM_ONE 'o' /* deliver first TA in background, then queue */ 1638 #endif /* _FFR_DM_ONE */ 1639 #define SM_QUEUE 'q' /* queue, don't deliver */ 1640 #define SM_DEFER 'd' /* defer map lookups as well as queue */ 1641 #define SM_VERIFY 'v' /* verify only (used internally) */ 1642 #define DM_NOTSET (-1) /* DeliveryMode (per daemon) option not set */ 1643 # define SM_IS_INTERACTIVE(m) ((m) == SM_DELIVER) 1644 1645 #define WILL_BE_QUEUED(m) ((m) == SM_QUEUE || (m) == SM_DEFER) 1646 1647 /* used only as a parameter to sendall */ 1648 #define SM_DEFAULT '\0' /* unspecified, use SendMode */ 1649 1650 /* functions */ 1651 extern void set_delivery_mode __P((int, ENVELOPE *)); 1652 1653 /* values for e_errormode -- error handling modes */ 1654 #define EM_PRINT 'p' /* print errors */ 1655 #define EM_MAIL 'm' /* mail back errors */ 1656 #define EM_WRITE 'w' /* write back errors */ 1657 #define EM_BERKNET 'e' /* special berknet processing */ 1658 #define EM_QUIET 'q' /* don't print messages (stat only) */ 1659 1660 1661 /* bit values for MimeMode */ 1662 #define MM_CVTMIME 0x0001 /* convert 8 to 7 bit MIME */ 1663 #define MM_PASS8BIT 0x0002 /* just send 8 bit data blind */ 1664 #define MM_MIME8BIT 0x0004 /* convert 8-bit data to MIME */ 1665 1666 1667 /* how to handle messages without any recipient addresses */ 1668 #define NRA_NO_ACTION 0 /* just leave it as is */ 1669 #define NRA_ADD_TO 1 /* add To: header */ 1670 #define NRA_ADD_APPARENTLY_TO 2 /* add Apparently-To: header */ 1671 #define NRA_ADD_BCC 3 /* add empty Bcc: header */ 1672 #define NRA_ADD_TO_UNDISCLOSED 4 /* add To: undisclosed:; header */ 1673 1674 1675 /* flags to putxline */ 1676 #define PXLF_NOTHINGSPECIAL 0 /* no special mapping */ 1677 #define PXLF_MAPFROM 0x0001 /* map From_ to >From_ */ 1678 #define PXLF_STRIP8BIT 0x0002 /* strip 8th bit */ 1679 #define PXLF_HEADER 0x0004 /* map newlines in headers */ 1680 #define PXLF_NOADDEOL 0x0008 /* if EOL not present, don't add one */ 1681 #define PXLF_STRIPMQUOTE 0x0010 /* strip METAQUOTEs */ 1682 1683 /* 1684 ** Privacy flags 1685 ** These are bit values for the PrivacyFlags word. 1686 */ 1687 1688 #define PRIV_PUBLIC 0 /* what have I got to hide? */ 1689 #define PRIV_NEEDMAILHELO 0x00000001 /* insist on HELO for MAIL */ 1690 #define PRIV_NEEDEXPNHELO 0x00000002 /* insist on HELO for EXPN */ 1691 #define PRIV_NEEDVRFYHELO 0x00000004 /* insist on HELO for VRFY */ 1692 #define PRIV_NOEXPN 0x00000008 /* disallow EXPN command */ 1693 #define PRIV_NOVRFY 0x00000010 /* disallow VRFY command */ 1694 #define PRIV_AUTHWARNINGS 0x00000020 /* flag possible auth probs */ 1695 #define PRIV_NOVERB 0x00000040 /* disallow VERB command */ 1696 #define PRIV_RESTRICTMAILQ 0x00010000 /* restrict mailq command */ 1697 #define PRIV_RESTRICTQRUN 0x00020000 /* restrict queue run */ 1698 #define PRIV_RESTRICTEXPAND 0x00040000 /* restrict alias/forward expansion */ 1699 #define PRIV_NOETRN 0x00080000 /* disallow ETRN command */ 1700 #define PRIV_NOBODYRETN 0x00100000 /* do not return bodies on bounces */ 1701 #define PRIV_NORECEIPTS 0x00200000 /* disallow return receipts */ 1702 #define PRIV_NOACTUALRECIPIENT 0x00400000 /* no X-Actual-Recipient in DSNs */ 1703 1704 /* don't give no info, anyway, anyhow (in the main SMTP transaction) */ 1705 #define PRIV_GOAWAY 0x0000ffff 1706 1707 /* struct defining such things */ 1708 struct prival 1709 { 1710 char *pv_name; /* name of privacy flag */ 1711 unsigned long pv_flag; /* numeric level */ 1712 }; 1713 1714 EXTERN unsigned long PrivacyFlags; /* privacy flags */ 1715 1716 1717 /* 1718 ** Flags passed to remotename, parseaddr, allocaddr, and buildaddr. 1719 */ 1720 1721 #define RF_SENDERADDR 0x001 /* this is a sender address */ 1722 #define RF_HEADERADDR 0x002 /* this is a header address */ 1723 #define RF_CANONICAL 0x004 /* strip comment information */ 1724 #define RF_ADDDOMAIN 0x008 /* OK to do domain extension */ 1725 #define RF_COPYPARSE 0x010 /* copy parsed user & host */ 1726 #define RF_COPYPADDR 0x020 /* copy print address */ 1727 #define RF_COPYALL (RF_COPYPARSE|RF_COPYPADDR) 1728 #define RF_COPYNONE 0 1729 #define RF_RM_ADDR 0x040 /* address to be removed */ 1730 1731 /* 1732 ** Flags passed to rscheck 1733 */ 1734 1735 #define RSF_RMCOMM 0x0001 /* strip comments */ 1736 #define RSF_UNSTRUCTURED 0x0002 /* unstructured, ignore syntax errors */ 1737 #define RSF_COUNT 0x0004 /* count rejections (statistics)? */ 1738 1739 /* 1740 ** Flags passed to mime8to7 and putheader. 1741 */ 1742 1743 #define M87F_OUTER 0 /* outer context */ 1744 #define M87F_NO8BIT 0x0001 /* can't have 8-bit in this section */ 1745 #define M87F_DIGEST 0x0002 /* processing multipart/digest */ 1746 #define M87F_NO8TO7 0x0004 /* don't do 8->7 bit conversions */ 1747 1748 /* functions */ 1749 extern bool mime7to8 __P((MCI *, HDR *, ENVELOPE *)); 1750 extern int mime8to7 __P((MCI *, HDR *, ENVELOPE *, char **, int, int)); 1751 1752 /* 1753 ** Flags passed to returntosender. 1754 */ 1755 1756 #define RTSF_NO_BODY 0 /* send headers only */ 1757 #define RTSF_SEND_BODY 0x0001 /* include body of message in return */ 1758 #define RTSF_PM_BOUNCE 0x0002 /* this is a postmaster bounce */ 1759 1760 /* functions */ 1761 extern int returntosender __P((char *, ADDRESS *, int, ENVELOPE *)); 1762 1763 /* 1764 ** Mail Filters (milter) 1765 */ 1766 1767 /* 1768 ** 32-bit type used by milter 1769 ** (needed by libmilter even if MILTER isn't defined) 1770 */ 1771 1772 typedef SM_INT32 mi_int32; 1773 1774 #if MILTER 1775 # define SMFTO_WRITE 0 /* Timeout for sending information */ 1776 # define SMFTO_READ 1 /* Timeout waiting for a response */ 1777 # define SMFTO_EOM 2 /* Timeout for ACK/NAK to EOM */ 1778 # define SMFTO_CONNECT 3 /* Timeout for connect() */ 1779 1780 # define SMFTO_NUM_TO 4 /* Total number of timeouts */ 1781 1782 struct milter 1783 { 1784 char *mf_name; /* filter name */ 1785 BITMAP256 mf_flags; /* MTA flags */ 1786 mi_int32 mf_fvers; /* filter version */ 1787 mi_int32 mf_fflags; /* filter flags */ 1788 mi_int32 mf_pflags; /* protocol flags */ 1789 char *mf_conn; /* connection info */ 1790 int mf_sock; /* connected socket */ 1791 char mf_state; /* state of filter */ 1792 char mf_lflags; /* "local" flags */ 1793 int mf_idx; /* milter number (index) */ 1794 time_t mf_timeout[SMFTO_NUM_TO]; /* timeouts */ 1795 #if _FFR_MILTER_CHECK 1796 /* for testing only */ 1797 mi_int32 mf_mta_prot_version; 1798 mi_int32 mf_mta_prot_flags; 1799 mi_int32 mf_mta_actions; 1800 #endif /* _FFR_MILTER_CHECK */ 1801 }; 1802 1803 #define MI_LFL_NONE 0x00000000 1804 #define MI_LFLAGS_SYM(st) (1 << (st)) /* has its own symlist for stage st */ 1805 1806 struct milters 1807 { 1808 mi_int32 mis_flags; /* filter flags */ 1809 }; 1810 typedef struct milters milters_T; 1811 1812 #define MIS_FL_NONE 0x00000000 /* no requirements... */ 1813 #define MIS_FL_DEL_RCPT 0x00000001 /* can delete rcpt */ 1814 #define MIS_FL_REJ_RCPT 0x00000002 /* can reject rcpt */ 1815 1816 1817 /* MTA flags */ 1818 # define SMF_REJECT 'R' /* Reject connection on filter fail */ 1819 # define SMF_TEMPFAIL 'T' /* tempfail connection on failure */ 1820 # define SMF_TEMPDROP '4' /* 421 connection on failure */ 1821 1822 EXTERN struct milter *InputFilters[MAXFILTERS]; 1823 EXTERN char *InputFilterList; 1824 EXTERN int MilterLogLevel; 1825 1826 /* functions */ 1827 extern void setup_daemon_milters __P((void)); 1828 #endif /* MILTER */ 1829 1830 /* 1831 ** Vendor codes 1832 ** 1833 ** Vendors can customize sendmail to add special behaviour, 1834 ** generally for back compatibility. Ideally, this should 1835 ** be set up in the .cf file using the "V" command. However, 1836 ** it's quite reasonable for some vendors to want the default 1837 ** be their old version; this can be set using 1838 ** -DVENDOR_DEFAULT=VENDOR_xxx 1839 ** in the Makefile. 1840 ** 1841 ** Vendors should apply to sendmail@sendmail.org for 1842 ** unique vendor codes. 1843 */ 1844 1845 #define VENDOR_BERKELEY 1 /* Berkeley-native configuration file */ 1846 #define VENDOR_SUN 2 /* Sun-native configuration file */ 1847 #define VENDOR_HP 3 /* Hewlett-Packard specific config syntax */ 1848 #define VENDOR_IBM 4 /* IBM specific config syntax */ 1849 #define VENDOR_SENDMAIL 5 /* Sendmail, Inc. specific config syntax */ 1850 #define VENDOR_DEC 6 /* Compaq, DEC, Digital */ 1851 1852 /* prototypes for vendor-specific hook routines */ 1853 extern void vendor_daemon_setup __P((ENVELOPE *)); 1854 extern void vendor_set_uid __P((UID_T)); 1855 1856 1857 /* 1858 ** Terminal escape codes. 1859 ** 1860 ** To make debugging output clearer. 1861 */ 1862 1863 struct termescape 1864 { 1865 char *te_rv_on; /* turn reverse-video on */ 1866 char *te_under_on; /* turn underlining on */ 1867 char *te_normal; /* revert to normal output */ 1868 }; 1869 1870 /* 1871 ** Additional definitions 1872 */ 1873 1874 /* 1875 ** d_flags, see daemon.c 1876 ** general rule: lower case: required, upper case: No 1877 */ 1878 1879 #define D_AUTHREQ 'a' /* authentication required */ 1880 #define D_BINDIF 'b' /* use if_addr for outgoing connection */ 1881 #define D_CANONREQ 'c' /* canonification required (cf) */ 1882 #define D_IFNHELO 'h' /* use if name for HELO */ 1883 #define D_FQMAIL 'f' /* fq sender address required (cf) */ 1884 #define D_FQRCPT 'r' /* fq recipient address required (cf) */ 1885 #define D_SMTPS 's' /* SMTP over SSL (smtps) */ 1886 #define D_UNQUALOK 'u' /* unqualified address is ok (cf) */ 1887 #define D_NOAUTH 'A' /* no AUTH */ 1888 #define D_NOCANON 'C' /* no canonification (cf) */ 1889 #define D_NOETRN 'E' /* no ETRN (MSA) */ 1890 #define D_NOTLS 'S' /* don't use STARTTLS */ 1891 #define D_ETRNONLY ((char)0x01) /* allow only ETRN (disk low) */ 1892 #define D_OPTIONAL 'O' /* optional socket */ 1893 #define D_DISABLE ((char)0x02) /* optional socket disabled */ 1894 #define D_ISSET ((char)0x03) /* this client struct is set */ 1895 1896 #if STARTTLS 1897 /* 1898 ** TLS 1899 */ 1900 1901 /* what to do in the TLS initialization */ 1902 #define TLS_I_NONE 0x00000000 /* no requirements... */ 1903 #define TLS_I_CERT_EX 0x00000001 /* cert must exist */ 1904 #define TLS_I_CERT_UNR 0x00000002 /* cert must be g/o unreadable */ 1905 #define TLS_I_KEY_EX 0x00000004 /* key must exist */ 1906 #define TLS_I_KEY_UNR 0x00000008 /* key must be g/o unreadable */ 1907 #define TLS_I_CERTP_EX 0x00000010 /* CA cert path must exist */ 1908 #define TLS_I_CERTP_UNR 0x00000020 /* CA cert path must be g/o unreadable */ 1909 #define TLS_I_CERTF_EX 0x00000040 /* CA cert file must exist */ 1910 #define TLS_I_CERTF_UNR 0x00000080 /* CA cert file must be g/o unreadable */ 1911 #define TLS_I_RSA_TMP 0x00000100 /* RSA TMP must be generated */ 1912 #define TLS_I_USE_KEY 0x00000200 /* private key must usable */ 1913 #define TLS_I_USE_CERT 0x00000400 /* certificate must be usable */ 1914 #define TLS_I_VRFY_PATH 0x00000800 /* load verify path must succeed */ 1915 #define TLS_I_VRFY_LOC 0x00001000 /* load verify default must succeed */ 1916 #define TLS_I_CACHE 0x00002000 /* require cache */ 1917 #define TLS_I_TRY_DH 0x00004000 /* try DH certificate */ 1918 #define TLS_I_REQ_DH 0x00008000 /* require DH certificate */ 1919 #define TLS_I_DHPAR_EX 0x00010000 /* require DH parameters */ 1920 #define TLS_I_DHPAR_UNR 0x00020000 /* DH param. must be g/o unreadable */ 1921 #define TLS_I_DH512 0x00040000 /* generate 512bit DH param */ 1922 #define TLS_I_DH1024 0x00080000 /* generate 1024bit DH param */ 1923 #define TLS_I_DH2048 0x00100000 /* generate 2048bit DH param */ 1924 #define TLS_I_NO_VRFY 0x00200000 /* do not require authentication */ 1925 #define TLS_I_KEY_OUNR 0x00400000 /* Key must be other unreadable */ 1926 #define TLS_I_CRLF_EX 0x00800000 /* CRL file must exist */ 1927 #define TLS_I_CRLF_UNR 0x01000000 /* CRL file must be g/o unreadable */ 1928 1929 /* require server cert */ 1930 #define TLS_I_SRV_CERT (TLS_I_CERT_EX | TLS_I_KEY_EX | \ 1931 TLS_I_KEY_UNR | TLS_I_KEY_OUNR | \ 1932 TLS_I_CERTP_EX | TLS_I_CERTF_EX | \ 1933 TLS_I_USE_KEY | TLS_I_USE_CERT | TLS_I_CACHE) 1934 1935 /* server requirements */ 1936 #define TLS_I_SRV (TLS_I_SRV_CERT | TLS_I_RSA_TMP | TLS_I_VRFY_PATH | \ 1937 TLS_I_VRFY_LOC | TLS_I_TRY_DH | TLS_I_DH512 | \ 1938 TLS_I_CACHE) 1939 1940 /* client requirements */ 1941 #define TLS_I_CLT (TLS_I_KEY_UNR | TLS_I_KEY_OUNR) 1942 1943 #define TLS_AUTH_OK 0 1944 #define TLS_AUTH_NO 1 1945 #define TLS_AUTH_FAIL (-1) 1946 1947 /* functions */ 1948 extern bool init_tls_library __P((bool _fipsmode)); 1949 extern bool inittls __P((SSL_CTX **, unsigned long, long, bool, char *, char *, char *, char *, char *)); 1950 extern bool initclttls __P((bool)); 1951 extern void setclttls __P((bool)); 1952 extern bool initsrvtls __P((bool)); 1953 extern int tls_get_info __P((SSL *, bool, char *, MACROS_T *, bool)); 1954 extern int endtls __P((SSL *, char *)); 1955 extern void tlslogerr __P((int, const char *)); 1956 1957 1958 EXTERN char *CACertPath; /* path to CA certificates (dir. with hashes) */ 1959 EXTERN char *CACertFile; /* file with CA certificate */ 1960 EXTERN char *CltCertFile; /* file with client certificate */ 1961 EXTERN char *CltKeyFile; /* file with client private key */ 1962 # if _FFR_TLS_1 1963 EXTERN char *CipherList; /* list of ciphers */ 1964 EXTERN char *DHParams5; /* file with DH parameters (512) */ 1965 # endif /* _FFR_TLS_1 */ 1966 EXTERN char *DHParams; /* file with DH parameters */ 1967 EXTERN char *RandFile; /* source of random data */ 1968 EXTERN char *SrvCertFile; /* file with server certificate */ 1969 EXTERN char *SrvKeyFile; /* file with server private key */ 1970 EXTERN char *CRLFile; /* file CRLs */ 1971 #if _FFR_CRLPATH 1972 EXTERN char *CRLPath; /* path to CRLs (dir. with hashes) */ 1973 #endif /* _FFR_CRLPATH */ 1974 EXTERN unsigned long TLS_Srv_Opts; /* TLS server options */ 1975 EXTERN long Srv_SSL_Options, Clt_SSL_Options; /* SSL options */ 1976 #endif /* STARTTLS */ 1977 1978 /* 1979 ** Queue related items 1980 */ 1981 1982 /* queue file names */ 1983 #define ANYQFL_LETTER '?' 1984 #define QUARQF_LETTER 'h' 1985 #define DATAFL_LETTER 'd' 1986 #define XSCRPT_LETTER 'x' 1987 #define NORMQF_LETTER 'q' 1988 #define NEWQFL_LETTER 't' 1989 1990 # define TEMPQF_LETTER 'T' 1991 # define LOSEQF_LETTER 'Q' 1992 1993 /* queue sort order */ 1994 #define QSO_BYPRIORITY 0 /* sort by message priority */ 1995 #define QSO_BYHOST 1 /* sort by first host name */ 1996 #define QSO_BYTIME 2 /* sort by submission time */ 1997 #define QSO_BYFILENAME 3 /* sort by file name only */ 1998 #define QSO_RANDOM 4 /* sort in random order */ 1999 #define QSO_BYMODTIME 5 /* sort by modification time */ 2000 #define QSO_NONE 6 /* do not sort */ 2001 #if _FFR_RHS 2002 # define QSO_BYSHUFFLE 7 /* sort by shuffled host name */ 2003 #endif /* _FFR_RHS */ 2004 2005 #define NOQGRP (-1) /* no queue group (yet) */ 2006 #define ENVQGRP (-2) /* use queue group of envelope */ 2007 #define NOAQGRP (-3) /* no queue group in addr (yet) */ 2008 #define ISVALIDQGRP(x) ((x) >= 0) /* valid queue group? */ 2009 #define NOQDIR (-1) /* no queue directory (yet) */ 2010 #define ENVQDIR (-2) /* use queue directory of envelope */ 2011 #define NOAQDIR (-3) /* no queue directory in addr (yet) */ 2012 #define ISVALIDQDIR(x) ((x) >= 0) /* valid queue directory? */ 2013 #define RS_QUEUEGROUP "queuegroup" /* ruleset for queue group selection */ 2014 2015 #define NOW ((time_t) (-1)) /* queue return: now */ 2016 2017 /* SuperSafe values */ 2018 #define SAFE_NO 0 /* no fsync(): don't use... */ 2019 #define SAFE_INTERACTIVE 1 /* limit fsync() in -odi */ 2020 #define SAFE_REALLY 2 /* always fsync() */ 2021 #define SAFE_REALLY_POSTMILTER 3 /* fsync() if milter says OK */ 2022 2023 /* QueueMode bits */ 2024 #define QM_NORMAL ' ' 2025 #define QM_QUARANTINE 'Q' 2026 #define QM_LOST 'L' 2027 2028 /* Queue Run Limitations */ 2029 struct queue_char 2030 { 2031 char *queue_match; /* string to match */ 2032 bool queue_negate; /* or not match, if set */ 2033 struct queue_char *queue_next; 2034 }; 2035 2036 /* run_work_group() flags */ 2037 #define RWG_NONE 0x0000 2038 #define RWG_FORK 0x0001 2039 #define RWG_VERBOSE 0x0002 2040 #define RWG_PERSISTENT 0x0004 2041 #define RWG_FORCE 0x0008 2042 #define RWG_RUNALL 0x0010 2043 2044 typedef struct queue_char QUEUE_CHAR; 2045 2046 EXTERN int volatile CurRunners; /* current number of runner children */ 2047 EXTERN int MaxQueueRun; /* maximum number of jobs in one queue run */ 2048 EXTERN int MaxQueueChildren; /* max # of forked queue children */ 2049 EXTERN int MaxRunnersPerQueue; /* max # proc's active in queue group */ 2050 EXTERN int NiceQueueRun; /* nice queue runs to this value */ 2051 EXTERN int NumQueue; /* number of queue groups */ 2052 EXTERN int QueueFileMode; /* mode on files in mail queue */ 2053 EXTERN int QueueMode; /* which queue items to act upon */ 2054 EXTERN int QueueSortOrder; /* queue sorting order algorithm */ 2055 EXTERN time_t MinQueueAge; /* min delivery interval */ 2056 #if _FFR_EXPDELAY 2057 EXTERN time_t MaxQueueAge; /* max delivery interval */ 2058 #endif /* _FFR_EXPDELAY */ 2059 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 2060 EXTERN char *QueueDir; /* location of queue directory */ 2061 EXTERN QUEUE_CHAR *QueueLimitId; /* limit queue run to id */ 2062 EXTERN QUEUE_CHAR *QueueLimitQuarantine; /* limit queue run to quarantine reason */ 2063 EXTERN QUEUE_CHAR *QueueLimitRecipient; /* limit queue run to rcpt */ 2064 EXTERN QUEUE_CHAR *QueueLimitSender; /* limit queue run to sender */ 2065 EXTERN QUEUEGRP *Queue[MAXQUEUEGROUPS + 1]; /* queue groups */ 2066 2067 /* functions */ 2068 extern void assign_queueid __P((ENVELOPE *)); 2069 extern ADDRESS *copyqueue __P((ADDRESS *, SM_RPOOL_T *)); 2070 extern void cleanup_queues __P((void)); 2071 extern bool doqueuerun __P((void)); 2072 extern void initsys __P((ENVELOPE *)); 2073 extern void loseqfile __P((ENVELOPE *, char *)); 2074 extern int name2qid __P((char *)); 2075 extern char *qid_printname __P((ENVELOPE *)); 2076 extern char *qid_printqueue __P((int, int)); 2077 extern void quarantine_queue __P((char *, int)); 2078 extern char *queuename __P((ENVELOPE *, int)); 2079 extern void queueup __P((ENVELOPE *, bool, bool)); 2080 extern bool runqueue __P((bool, bool, bool, bool)); 2081 extern bool run_work_group __P((int, int)); 2082 extern void set_def_queueval __P((QUEUEGRP *, bool)); 2083 extern void setup_queues __P((bool)); 2084 extern bool setnewqueue __P((ENVELOPE *)); 2085 extern bool shouldqueue __P((long, time_t)); 2086 extern void sync_queue_time __P((void)); 2087 extern void init_qid_alg __P((void)); 2088 extern int print_single_queue __P((int, int)); 2089 #if REQUIRES_DIR_FSYNC 2090 # define SYNC_DIR(path, panic) sync_dir(path, panic) 2091 extern void sync_dir __P((char *, bool)); 2092 #else /* REQUIRES_DIR_FSYNC */ 2093 # define SYNC_DIR(path, panic) ((void) 0) 2094 #endif /* REQUIRES_DIR_FSYNC */ 2095 2096 /* 2097 ** Timeouts 2098 ** 2099 ** Indicated values are the MINIMUM per RFC 1123 section 5.3.2. 2100 */ 2101 2102 EXTERN struct 2103 { 2104 /* RFC 1123-specified timeouts [minimum value] */ 2105 time_t to_initial; /* initial greeting timeout [5m] */ 2106 time_t to_mail; /* MAIL command [5m] */ 2107 time_t to_rcpt; /* RCPT command [5m] */ 2108 time_t to_datainit; /* DATA initiation [2m] */ 2109 time_t to_datablock; /* DATA block [3m] */ 2110 time_t to_datafinal; /* DATA completion [10m] */ 2111 time_t to_nextcommand; /* next command [5m] */ 2112 /* following timeouts are not mentioned in RFC 1123 */ 2113 time_t to_iconnect; /* initial connection timeout (first try) */ 2114 time_t to_connect; /* initial connection timeout (later tries) */ 2115 time_t to_aconnect; /* all connections timeout (MX and A records) */ 2116 time_t to_rset; /* RSET command */ 2117 time_t to_helo; /* HELO command */ 2118 time_t to_quit; /* QUIT command */ 2119 time_t to_miscshort; /* misc short commands (NOOP, VERB, etc) */ 2120 time_t to_ident; /* IDENT protocol requests */ 2121 time_t to_fileopen; /* opening :include: and .forward files */ 2122 time_t to_control; /* process a control socket command */ 2123 time_t to_lhlo; /* LMTP: LHLO command */ 2124 #if SASL 2125 time_t to_auth; /* AUTH dialogue [10m] */ 2126 #endif /* SASL */ 2127 #if STARTTLS 2128 time_t to_starttls; /* STARTTLS dialogue [10m] */ 2129 #endif /* STARTTLS */ 2130 /* following are per message */ 2131 time_t to_q_return[MAXTOCLASS]; /* queue return timeouts */ 2132 time_t to_q_warning[MAXTOCLASS]; /* queue warning timeouts */ 2133 time_t res_retrans[MAXRESTOTYPES]; /* resolver retransmit */ 2134 int res_retry[MAXRESTOTYPES]; /* resolver retry */ 2135 } TimeOuts; 2136 2137 /* timeout classes for return and warning timeouts */ 2138 #define TOC_NORMAL 0 /* normal delivery */ 2139 #define TOC_URGENT 1 /* urgent delivery */ 2140 #define TOC_NONURGENT 2 /* non-urgent delivery */ 2141 #define TOC_DSN 3 /* DSN delivery */ 2142 2143 /* resolver timeout specifiers */ 2144 #define RES_TO_FIRST 0 /* first attempt */ 2145 #define RES_TO_NORMAL 1 /* subsequent attempts */ 2146 #define RES_TO_DEFAULT 2 /* default value */ 2147 2148 /* functions */ 2149 extern void inittimeouts __P((char *, bool)); 2150 2151 /* 2152 ** Interface probing 2153 */ 2154 2155 #define DPI_PROBENONE 0 /* Don't probe any interfaces */ 2156 #define DPI_PROBEALL 1 /* Probe all interfaces */ 2157 #define DPI_SKIPLOOPBACK 2 /* Don't probe loopback interfaces */ 2158 2159 /* 2160 ** Trace information 2161 */ 2162 2163 /* macros for debugging flags */ 2164 #if NOT_SENDMAIL 2165 # define tTd(flag, level) (tTdvect[flag] >= (unsigned char)level) 2166 #else 2167 # define tTd(flag, level) (tTdvect[flag] >= (unsigned char)level && !IntSig) 2168 #endif 2169 #define tTdlevel(flag) (tTdvect[flag]) 2170 2171 /* variables */ 2172 extern unsigned char tTdvect[100]; /* trace vector */ 2173 2174 /* 2175 ** Miscellaneous information. 2176 */ 2177 2178 /* 2179 ** The "no queue id" queue id for sm_syslog 2180 */ 2181 2182 #define NOQID "" 2183 2184 #define CURHOSTNAME (CurHostName == NULL ? "local" : CurHostName) 2185 2186 /* 2187 ** Some in-line functions 2188 */ 2189 2190 /* set exit status */ 2191 #define setstat(s) \ 2192 do \ 2193 { \ 2194 if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ 2195 ExitStat = s; \ 2196 } while (0) 2197 2198 2199 #define STRUCTCOPY(s, d) d = s 2200 2201 /* free a pointer if it isn't NULL and set it to NULL */ 2202 #define SM_FREE_CLR(p) \ 2203 do \ 2204 { \ 2205 if ((p) != NULL) \ 2206 { \ 2207 sm_free(p); \ 2208 (p) = NULL; \ 2209 } \ 2210 } while (0) 2211 2212 /* 2213 ** Update a permanent string variable with a new value. 2214 ** The old value is freed, the new value is strdup'ed. 2215 ** 2216 ** We use sm_pstrdup_x to duplicate the string because it raises 2217 ** an exception on error, and because it allocates "permanent storage" 2218 ** which is not expected to be freed before process exit. 2219 ** The latter is important for memory leak analysis. 2220 ** 2221 ** If an exception occurs while strdup'ing the new value, 2222 ** then the variable remains set to the old value. 2223 ** That's why the strdup must occur before we free the old value. 2224 ** 2225 ** The macro uses a do loop so that this idiom will work: 2226 ** if (...) 2227 ** PSTRSET(var, val1); 2228 ** else 2229 ** PSTRSET(var, val2); 2230 */ 2231 #define PSTRSET(var, val) \ 2232 do \ 2233 { \ 2234 char *_newval = sm_pstrdup_x(val); \ 2235 if (var != NULL) \ 2236 sm_free(var); \ 2237 var = _newval; \ 2238 } while (0) 2239 2240 #define _CHECK_RESTART \ 2241 do \ 2242 { \ 2243 if (ShutdownRequest != NULL) \ 2244 shutdown_daemon(); \ 2245 else if (RestartRequest != NULL) \ 2246 restart_daemon(); \ 2247 else if (RestartWorkGroup) \ 2248 restart_marked_work_groups(); \ 2249 } while (0) 2250 2251 # define CHECK_RESTART _CHECK_RESTART 2252 2253 #define CHK_CUR_RUNNERS(fct, idx, count) \ 2254 do \ 2255 { \ 2256 if (CurRunners < 0) \ 2257 { \ 2258 if (LogLevel > 3) \ 2259 sm_syslog(LOG_ERR, NOQID, \ 2260 "%s: CurRunners=%d, i=%d, count=%d, status=should not happen", \ 2261 fct, CurRunners, idx, count); \ 2262 CurRunners = 0; \ 2263 } \ 2264 } while (0) 2265 2266 /* reply types (text in SmtpMsgBuffer) */ 2267 #define XS_DEFAULT 0 2268 #define XS_STARTTLS 1 2269 #define XS_AUTH 2 2270 #define XS_GREET 3 2271 #define XS_EHLO 4 2272 #define XS_MAIL 5 2273 #define XS_RCPT 6 2274 #define XS_DATA 7 2275 #define XS_EOM 8 2276 #define XS_DATA2 9 2277 #define XS_RCPT2 10 2278 #define XS_QUIT 15 2279 2280 /* 2281 ** Global variables. 2282 */ 2283 2284 #if _FFR_ADDR_TYPE_MODES 2285 EXTERN bool AddrTypeModes; /* addr_type: extra "mode" information */ 2286 #endif /* _FFR_ADDR_TYPE_MODES */ 2287 EXTERN bool AllowBogusHELO; /* allow syntax errors on HELO command */ 2288 EXTERN bool CheckAliases; /* parse addresses during newaliases */ 2289 #if _FFR_QUEUE_RUN_PARANOIA 2290 EXTERN int CheckQueueRunners; /* check whether queue runners are OK */ 2291 #endif /* _FFR_QUEUE_RUN_PARANOIA */ 2292 EXTERN bool ColonOkInAddr; /* single colon legal in address */ 2293 #if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) 2294 EXTERN bool ConfigFileRead; /* configuration file has been read */ 2295 #endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */ 2296 EXTERN bool DisConnected; /* running with OutChannel redirect to transcript file */ 2297 EXTERN bool DontExpandCnames; /* do not $[...$] expand CNAMEs */ 2298 EXTERN bool DontInitGroups; /* avoid initgroups() because of NIS cost */ 2299 EXTERN bool DontLockReadFiles; /* don't read lock support files */ 2300 EXTERN bool DontPruneRoutes; /* don't prune source routes */ 2301 EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ 2302 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 2303 EXTERN bool FipsMode; 2304 EXTERN bool GrabTo; /* if set, get recipients from msg */ 2305 EXTERN bool EightBitAddrOK; /* we'll let 8-bit addresses through */ 2306 EXTERN bool HasEightBits; /* has at least one eight bit input byte */ 2307 EXTERN bool HasWildcardMX; /* don't use MX records when canonifying */ 2308 EXTERN bool HoldErrs; /* only output errors to transcript */ 2309 EXTERN bool IgnoreHostStatus; /* ignore long term host status files */ 2310 EXTERN bool IgnrDot; /* don't let dot end messages */ 2311 EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ 2312 EXTERN bool MatchGecos; /* look for user names in gecos field */ 2313 EXTERN bool MeToo; /* send to the sender also */ 2314 EXTERN bool NoAlias; /* suppress aliasing */ 2315 EXTERN bool NoConnect; /* don't connect to non-local mailers */ 2316 EXTERN bool OnlyOneError; /* .... or only want to give one SMTP reply */ 2317 EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ 2318 #if _FFR_REJECT_NUL_BYTE 2319 EXTERN bool RejectNUL; /* reject NUL input byte? */ 2320 #endif /* _FFR_REJECT_NUL_BYTE */ 2321 #if REQUIRES_DIR_FSYNC 2322 EXTERN bool RequiresDirfsync; /* requires fsync() for directory */ 2323 #endif /* REQUIRES_DIR_FSYNC */ 2324 EXTERN bool volatile RestartWorkGroup; /* daemon needs to restart some work groups */ 2325 EXTERN bool RrtImpliesDsn; /* turn Return-Receipt-To: into DSN */ 2326 EXTERN bool SaveFrom; /* save leading "From" lines */ 2327 EXTERN bool SendMIMEErrors; /* send error messages in MIME format */ 2328 EXTERN bool SevenBitInput; /* force 7-bit data on input */ 2329 EXTERN bool SingleLineFromHeader; /* force From: header to be one line */ 2330 EXTERN bool SingleThreadDelivery; /* single thread hosts on delivery */ 2331 EXTERN bool SoftBounce; /* replace 5xy by 4xy (for testing) */ 2332 EXTERN bool volatile StopRequest; /* stop sending output */ 2333 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 2334 EXTERN bool TryNullMXList; /* if we are the best MX, try host directly */ 2335 EXTERN bool UseMSP; /* mail submission: group writable queue ok? */ 2336 EXTERN bool WorkAroundBrokenAAAA; /* some nameservers return SERVFAIL on AAAA queries */ 2337 EXTERN bool UseErrorsTo; /* use Errors-To: header (back compat) */ 2338 EXTERN bool UseNameServer; /* using DNS -- interpret h_errno & MX RRs */ 2339 EXTERN char InetMode; /* default network for daemon mode */ 2340 EXTERN char OpMode; /* operation mode, see below */ 2341 EXTERN char SpaceSub; /* substitution for <lwsp> */ 2342 #if _FFR_BADRCPT_SHUTDOWN 2343 EXTERN int BadRcptShutdown; /* Shutdown connection for rejected RCPTs */ 2344 EXTERN int BadRcptShutdownGood; /* above even when there are good RCPTs */ 2345 #endif /* _FFR_BADRCPT_SHUTDOWN */ 2346 EXTERN int BadRcptThrottle; /* Throttle rejected RCPTs per SMTP message */ 2347 #if _FFR_RCPTTHROTDELAY 2348 EXTERN unsigned int BadRcptThrottleDelay; /* delay for BadRcptThrottle */ 2349 #else 2350 # define BadRcptThrottleDelay 1 2351 #endif /* _FFR_RCPTTHROTDELAY */ 2352 EXTERN int CheckpointInterval; /* queue file checkpoint interval */ 2353 EXTERN int ConfigLevel; /* config file level */ 2354 EXTERN int ConnRateThrottle; /* throttle for SMTP connection rate */ 2355 EXTERN int volatile CurChildren; /* current number of daemonic children */ 2356 EXTERN int CurrentLA; /* current load average */ 2357 EXTERN int DefaultNotify; /* default DSN notification flags */ 2358 EXTERN int DelayLA; /* load average to delay connections */ 2359 EXTERN int DontProbeInterfaces; /* don't probe interfaces for names */ 2360 EXTERN int Errors; /* set if errors (local to single pass) */ 2361 EXTERN int ExitStat; /* exit status code */ 2362 EXTERN int FastSplit; /* fast initial splitting of envelopes */ 2363 EXTERN int FileMode; /* mode on files */ 2364 EXTERN int LineNumber; /* line number in current input */ 2365 EXTERN int LogLevel; /* level of logging to perform */ 2366 EXTERN int MaxAliasRecursion; /* maximum depth of alias recursion */ 2367 EXTERN int MaxChildren; /* maximum number of daemonic children */ 2368 EXTERN int MaxForwardEntries; /* maximum number of forward entries */ 2369 EXTERN int MaxHeadersLength; /* max length of headers */ 2370 EXTERN int MaxHopCount; /* max # of hops until bounce */ 2371 EXTERN int MaxMacroRecursion; /* maximum depth of macro recursion */ 2372 EXTERN int MaxMimeFieldLength; /* maximum MIME field length */ 2373 EXTERN int MaxMimeHeaderLength; /* maximum MIME header length */ 2374 EXTERN int MaxNOOPCommands; /* max "noise" commands before slowdown */ 2375 2376 EXTERN int MaxRcptPerMsg; /* max recipients per SMTP message */ 2377 EXTERN int MaxRuleRecursion; /* maximum depth of ruleset recursion */ 2378 #if _FFR_MSG_ACCEPT 2379 EXTERN char *MessageAccept; /* "Message accepted for delivery" reply text */ 2380 #endif /* _FFR_MSG_ACCEPT */ 2381 2382 EXTERN int MimeMode; /* MIME processing mode */ 2383 EXTERN int NoRecipientAction; 2384 2385 #if SM_CONF_SHM 2386 EXTERN int Numfilesys; /* number of queue file systems */ 2387 EXTERN int *PNumFileSys; 2388 # define NumFileSys (*PNumFileSys) 2389 # else /* SM_CONF_SHM */ 2390 EXTERN int NumFileSys; /* number of queue file systems */ 2391 # endif /* SM_CONF_SHM */ 2392 2393 EXTERN int QueueLA; /* load average starting forced queueing */ 2394 EXTERN int RefuseLA; /* load average refusing connections */ 2395 EXTERN time_t RejectLogInterval; /* time btwn log msgs while refusing */ 2396 #if _FFR_MEMSTAT 2397 EXTERN long QueueLowMem; /* low memory starting forced queueing */ 2398 EXTERN long RefuseLowMem; /* low memory refusing connections */ 2399 EXTERN char *MemoryResource;/* memory resource to look up */ 2400 #endif /* _FFR_MEMSTAT */ 2401 EXTERN int SuperSafe; /* be extra careful, even if expensive */ 2402 EXTERN int VendorCode; /* vendor-specific operation enhancements */ 2403 EXTERN int Verbose; /* set if blow-by-blow desired */ 2404 EXTERN gid_t DefGid; /* default gid to run as */ 2405 EXTERN gid_t RealGid; /* real gid of caller */ 2406 EXTERN gid_t RunAsGid; /* GID to become for bulk of run */ 2407 EXTERN gid_t EffGid; /* effective gid */ 2408 #if SM_CONF_SHM 2409 EXTERN key_t ShmKey; /* shared memory key */ 2410 EXTERN char *ShmKeyFile; /* shared memory key file */ 2411 #endif /* SM_CONF_SHM */ 2412 EXTERN pid_t CurrentPid; /* current process id */ 2413 EXTERN pid_t DaemonPid; /* process id of daemon */ 2414 EXTERN pid_t PidFilePid; /* daemon/queue runner who wrote pid file */ 2415 EXTERN uid_t DefUid; /* default uid to run as */ 2416 EXTERN uid_t RealUid; /* real uid of caller */ 2417 EXTERN uid_t RunAsUid; /* UID to become for bulk of run */ 2418 EXTERN uid_t TrustedUid; /* uid of trusted user for files and startup */ 2419 EXTERN size_t DataFileBufferSize; /* size of buf for in-core data file */ 2420 EXTERN time_t DeliverByMin; /* deliver by minimum time */ 2421 EXTERN time_t DialDelay; /* delay between dial-on-demand tries */ 2422 EXTERN time_t SafeAlias; /* interval to wait until @:@ in alias file */ 2423 EXTERN time_t ServiceCacheMaxAge; /* refresh interval for cache */ 2424 EXTERN size_t XscriptFileBufferSize; /* size of buf for in-core transcript file */ 2425 EXTERN MODE_T OldUmask; /* umask when sendmail starts up */ 2426 EXTERN long MaxMessageSize; /* advertised max size we will accept */ 2427 EXTERN long MinBlocksFree; /* min # of blocks free on queue fs */ 2428 EXTERN long QueueFactor; /* slope of queue function */ 2429 EXTERN long WkClassFact; /* multiplier for message class -> priority */ 2430 EXTERN long WkRecipFact; /* multiplier for # of recipients -> priority */ 2431 EXTERN long WkTimeFact; /* priority offset each time this job is run */ 2432 EXTERN char *ControlSocketName; /* control socket filename [control.c] */ 2433 EXTERN char *CurHostName; /* current host we are dealing with */ 2434 EXTERN char *DeadLetterDrop; /* path to dead letter office */ 2435 EXTERN char *DefUser; /* default user to run as (from DefUid) */ 2436 EXTERN char *DefaultCharSet; /* default character set for MIME */ 2437 EXTERN char *DoubleBounceAddr; /* where to send double bounces */ 2438 EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ 2439 EXTERN char *FallbackMX; /* fall back MX host */ 2440 EXTERN char *FallbackSmartHost; /* fall back smart host */ 2441 EXTERN char *FileName; /* name to print on error messages */ 2442 EXTERN char *ForwardPath; /* path to search for .forward files */ 2443 EXTERN char *HeloName; /* hostname to announce in HELO */ 2444 EXTERN char *HelpFile; /* location of SMTP help file */ 2445 EXTERN char *HostStatDir; /* location of host status information */ 2446 EXTERN char *HostsFile; /* path to /etc/hosts file */ 2447 extern char *Mbdb; /* mailbox database type */ 2448 EXTERN char *MustQuoteChars; /* quote these characters in phrases */ 2449 EXTERN char *MyHostName; /* name of this host for SMTP messages */ 2450 EXTERN char *OperatorChars; /* operators (old $o macro) */ 2451 EXTERN char *PidFile; /* location of proc id file [conf.c] */ 2452 EXTERN char *PostMasterCopy; /* address to get errs cc's */ 2453 EXTERN char *ProcTitlePrefix; /* process title prefix */ 2454 EXTERN char *RealHostName; /* name of host we are talking to */ 2455 EXTERN char *RealUserName; /* real user name of caller */ 2456 EXTERN char *volatile RestartRequest;/* a sendmail restart has been requested */ 2457 EXTERN char *RunAsUserName; /* user to become for bulk of run */ 2458 EXTERN char *SafeFileEnv; /* chroot location for file delivery */ 2459 EXTERN char *ServiceSwitchFile; /* backup service switch */ 2460 EXTERN char *volatile ShutdownRequest;/* a sendmail shutdown has been requested */ 2461 EXTERN bool volatile IntSig; 2462 EXTERN char *SmtpGreeting; /* SMTP greeting message (old $e macro) */ 2463 EXTERN char *SmtpPhase; /* current phase in SMTP processing */ 2464 EXTERN char SmtpError[MAXLINE]; /* save failure error messages */ 2465 EXTERN char *StatFile; /* location of statistics summary */ 2466 EXTERN char *TimeZoneSpec; /* override time zone specification */ 2467 EXTERN char *UdbSpec; /* user database source spec */ 2468 EXTERN char *UnixFromLine; /* UNIX From_ line (old $l macro) */ 2469 EXTERN char **ExternalEnviron; /* saved user (input) environment */ 2470 EXTERN char **SaveArgv; /* argument vector for re-execing */ 2471 EXTERN BITMAP256 DontBlameSendmail; /* DontBlameSendmail bits */ 2472 EXTERN SM_FILE_T *InChannel; /* input connection */ 2473 EXTERN SM_FILE_T *OutChannel; /* output connection */ 2474 EXTERN SM_FILE_T *TrafficLogFile; /* file in which to log all traffic */ 2475 #if HESIOD 2476 EXTERN void *HesiodContext; 2477 #endif /* HESIOD */ 2478 EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ 2479 EXTERN char *RuleSetNames[MAXRWSETS]; /* ruleset number to name */ 2480 EXTERN char *UserEnviron[MAXUSERENVIRON + 1]; 2481 EXTERN struct rewrite *RewriteRules[MAXRWSETS]; 2482 EXTERN struct termescape TermEscape; /* terminal escape codes */ 2483 EXTERN SOCKADDR ConnectOnlyTo; /* override connection address (for testing) */ 2484 EXTERN SOCKADDR RealHostAddr; /* address of host we are talking to */ 2485 extern const SM_EXC_TYPE_T EtypeQuickAbort; /* type of a QuickAbort exception */ 2486 2487 2488 EXTERN int ConnectionRateWindowSize; 2489 #if STARTTLS && USE_OPENSSL_ENGINE 2490 EXTERN bool SSLEngineInitialized; 2491 #endif /* STARTTLS && USE_OPENSSL_ENGINE */ 2492 2493 /* 2494 ** Declarations of useful functions 2495 */ 2496 2497 /* Transcript file */ 2498 extern void closexscript __P((ENVELOPE *)); 2499 extern void openxscript __P((ENVELOPE *)); 2500 2501 /* error related */ 2502 extern void buffer_errors __P((void)); 2503 extern void flush_errors __P((bool)); 2504 extern void PRINTFLIKE(1, 2) message __P((const char *, ...)); 2505 extern void PRINTFLIKE(1, 2) nmessage __P((const char *, ...)); 2506 extern void PRINTFLIKE(1, 2) syserr __P((const char *, ...)); 2507 extern void PRINTFLIKE(2, 3) usrerrenh __P((char *, const char *, ...)); 2508 extern void PRINTFLIKE(1, 2) usrerr __P((const char *, ...)); 2509 extern int isenhsc __P((const char *, int)); 2510 extern int extenhsc __P((const char *, int, char *)); 2511 2512 /* alias file */ 2513 extern void alias __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 2514 extern bool aliaswait __P((MAP *, char *, bool)); 2515 extern void forward __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 2516 extern void readaliases __P((MAP *, SM_FILE_T *, bool, bool)); 2517 extern bool rebuildaliases __P((MAP *, bool)); 2518 extern void setalias __P((char *)); 2519 2520 /* logging */ 2521 extern void logdelivery __P((MAILER *, MCI *, char *, const char *, ADDRESS *, time_t, ENVELOPE *)); 2522 extern void logsender __P((ENVELOPE *, char *)); 2523 extern void PRINTFLIKE(3, 4) sm_syslog __P((int, const char *, const char *, ...)); 2524 2525 /* SMTP */ 2526 extern void giveresponse __P((int, char *, MAILER *, MCI *, ADDRESS *, time_t, ENVELOPE *, ADDRESS *)); 2527 extern int reply __P((MAILER *, MCI *, ENVELOPE *, time_t, void (*)__P((char *, bool, MAILER *, MCI *, ENVELOPE *)), char **, int)); 2528 extern void smtp __P((char *volatile, BITMAP256, ENVELOPE *volatile)); 2529 #if SASL 2530 extern int smtpauth __P((MAILER *, MCI *, ENVELOPE *)); 2531 #endif /* SASL */ 2532 extern int smtpdata __P((MAILER *, MCI *, ENVELOPE *, ADDRESS *, time_t)); 2533 extern int smtpgetstat __P((MAILER *, MCI *, ENVELOPE *)); 2534 extern int smtpmailfrom __P((MAILER *, MCI *, ENVELOPE *)); 2535 extern void smtpmessage __P((char *, MAILER *, MCI *, ...)); 2536 extern void smtpinit __P((MAILER *, MCI *, ENVELOPE *, bool)); 2537 extern char *smtptodsn __P((int)); 2538 extern int smtpprobe __P((MCI *)); 2539 extern void smtpquit __P((MAILER *, MCI *, ENVELOPE *)); 2540 extern int smtprcpt __P((ADDRESS *, MAILER *, MCI *, ENVELOPE *, ADDRESS *, time_t)); 2541 extern void smtprset __P((MAILER *, MCI *, ENVELOPE *)); 2542 2543 #define REPLYTYPE(r) ((r) / 100) /* first digit of reply code */ 2544 #define REPLYCLASS(r) (((r) / 10) % 10) /* second digit of reply code */ 2545 #define REPLYMINOR(r) ((r) % 10) /* last digit of reply code */ 2546 #define ISSMTPCODE(c) (isascii(c[0]) && isdigit(c[0]) && \ 2547 isascii(c[1]) && isdigit(c[1]) && \ 2548 isascii(c[2]) && isdigit(c[2])) 2549 #define ISSMTPREPLY(c) (ISSMTPCODE(c) && \ 2550 (c[3] == ' ' || c[3] == '-' || c[3] == '\0')) 2551 2552 /* delivery */ 2553 extern pid_t dowork __P((int, int, char *, bool, bool, ENVELOPE *)); 2554 extern pid_t doworklist __P((ENVELOPE *, bool, bool)); 2555 extern int endmailer __P((MCI *, ENVELOPE *, char **)); 2556 extern int mailfile __P((char *volatile, MAILER *volatile, ADDRESS *, volatile long, ENVELOPE *)); 2557 extern void sendall __P((ENVELOPE *, int)); 2558 2559 /* stats */ 2560 #define STATS_NORMAL 'n' 2561 #define STATS_QUARANTINE 'q' 2562 #define STATS_REJECT 'r' 2563 #define STATS_CONNECT 'c' 2564 2565 extern void markstats __P((ENVELOPE *, ADDRESS *, int)); 2566 extern void clearstats __P((void)); 2567 extern void poststats __P((char *)); 2568 2569 /* control socket */ 2570 extern void closecontrolsocket __P((bool)); 2571 extern void clrcontrol __P((void)); 2572 extern void control_command __P((int, ENVELOPE *)); 2573 extern int opencontrolsocket __P((void)); 2574 2575 #if MILTER 2576 /* milter functions */ 2577 extern void milter_config __P((char *, struct milter **, int)); 2578 extern void milter_setup __P((char *)); 2579 extern void milter_set_option __P((char *, char *, bool)); 2580 extern bool milter_init __P((ENVELOPE *, char *, milters_T *)); 2581 extern void milter_quit __P((ENVELOPE *)); 2582 extern void milter_abort __P((ENVELOPE *)); 2583 extern char *milter_connect __P((char *, SOCKADDR, ENVELOPE *, char *)); 2584 extern char *milter_helo __P((char *, ENVELOPE *, char *)); 2585 extern char *milter_envfrom __P((char **, ENVELOPE *, char *)); 2586 extern char *milter_data_cmd __P((ENVELOPE *, char *)); 2587 extern char *milter_envrcpt __P((char **, ENVELOPE *, char *, bool)); 2588 extern char *milter_data __P((ENVELOPE *, char *)); 2589 extern char *milter_unknown __P((char *, ENVELOPE *, char *)); 2590 #endif /* MILTER */ 2591 2592 extern char *addquotes __P((char *, SM_RPOOL_T *)); 2593 extern char *arpadate __P((char *)); 2594 extern bool atobool __P((char *)); 2595 extern int atooct __P((char *)); 2596 extern void auth_warning __P((ENVELOPE *, const char *, ...)); 2597 extern int blocksignal __P((int)); 2598 extern bool bitintersect __P((BITMAP256, BITMAP256)); 2599 extern bool bitzerop __P((BITMAP256)); 2600 extern int check_bodytype __P((char *)); 2601 extern void buildfname __P((char *, char *, char *, int)); 2602 extern bool chkclientmodifiers __P((int)); 2603 extern bool chkdaemonmodifiers __P((int)); 2604 extern int checkcompat __P((ADDRESS *, ENVELOPE *)); 2605 #ifdef XDEBUG 2606 extern void checkfd012 __P((char *)); 2607 extern void checkfdopen __P((int, char *)); 2608 #endif /* XDEBUG */ 2609 extern void checkfds __P((char *)); 2610 extern bool chownsafe __P((int, bool)); 2611 extern void cleanstrcpy __P((char *, char *, int)); 2612 #if SM_CONF_SHM 2613 extern void cleanup_shm __P((bool)); 2614 #endif /* SM_CONF_SHM */ 2615 extern void close_sendmail_pid __P((void)); 2616 extern void clrdaemon __P((void)); 2617 extern void collect __P((SM_FILE_T *, bool, HDR **, ENVELOPE *, bool)); 2618 extern bool connection_rate_check __P((SOCKADDR *, ENVELOPE *)); 2619 extern time_t convtime __P((char *, int)); 2620 extern char **copyplist __P((char **, bool, SM_RPOOL_T *)); 2621 extern void copy_class __P((int, int)); 2622 extern int count_open_connections __P((SOCKADDR *)); 2623 extern time_t curtime __P((void)); 2624 extern char *defcharset __P((ENVELOPE *)); 2625 extern char *denlstring __P((char *, bool, bool)); 2626 extern void dferror __P((SM_FILE_T *volatile, char *, ENVELOPE *)); 2627 extern void disconnect __P((int, ENVELOPE *)); 2628 extern void disk_status __P((SM_FILE_T *, char *)); 2629 extern bool dns_getcanonname __P((char *, int, bool, int *, int *)); 2630 extern pid_t dofork __P((void)); 2631 extern int drop_privileges __P((bool)); 2632 extern int dsntoexitstat __P((char *)); 2633 extern void dumpfd __P((int, bool, bool)); 2634 #if SM_HEAP_CHECK 2635 extern void dumpstab __P((void)); 2636 #endif /* SM_HEAP_CHECK */ 2637 extern void dumpstate __P((char *)); 2638 extern bool enoughdiskspace __P((long, ENVELOPE *)); 2639 extern char *exitstat __P((char *)); 2640 extern void fatal_error __P((SM_EXC_T *)); 2641 extern char *fgetfolded __P((char *, int *, SM_FILE_T *)); 2642 extern void fill_fd __P((int, char *)); 2643 extern char *find_character __P((char *, int)); 2644 extern int finduser __P((char *, bool *, SM_MBDB_T *)); 2645 extern void finis __P((bool, bool, volatile int)); 2646 extern void fixcrlf __P((char *, bool)); 2647 extern long freediskspace __P((const char *, long *)); 2648 #if NETINET6 && NEEDSGETIPNODE 2649 extern void freehostent __P((struct hostent *)); 2650 #endif /* NETINET6 && NEEDSGETIPNODE */ 2651 extern char *get_column __P((char *, int, int, char *, int)); 2652 extern char *getauthinfo __P((int, bool *)); 2653 extern int getdtsize __P((void)); 2654 extern int getla __P((void)); 2655 extern char *getmodifiers __P((char *, BITMAP256)); 2656 extern BITMAP256 *getrequests __P((ENVELOPE *)); 2657 extern char *getvendor __P((int)); 2658 extern void help __P((char *, ENVELOPE *)); 2659 extern void init_md __P((int, char **)); 2660 extern void initdaemon __P((void)); 2661 extern void inithostmaps __P((void)); 2662 extern void initmacros __P((ENVELOPE *)); 2663 extern void initsetproctitle __P((int, char **, char **)); 2664 extern void init_vendor_macros __P((ENVELOPE *)); 2665 extern SIGFUNC_DECL intsig __P((int)); 2666 extern bool isatom __P((const char *)); 2667 extern bool isloopback __P((SOCKADDR sa)); 2668 extern void load_if_names __P((void)); 2669 extern bool lockfile __P((int, char *, char *, int)); 2670 extern void log_sendmail_pid __P((ENVELOPE *)); 2671 extern void logundelrcpts __P((ENVELOPE *, char *, int, bool)); 2672 extern char lower __P((int)); 2673 extern void makelower __P((char *)); 2674 extern int makeconnection_ds __P((char *, MCI *)); 2675 extern int makeconnection __P((char *, volatile unsigned int, MCI *, ENVELOPE *, time_t)); 2676 extern void makeworkgroups __P((void)); 2677 extern void markfailure __P((ENVELOPE *, ADDRESS *, MCI *, int, bool)); 2678 extern void mark_work_group_restart __P((int, int)); 2679 extern MCI *mci_new __P((SM_RPOOL_T *)); 2680 extern char *munchstring __P((char *, char **, int)); 2681 extern struct hostent *myhostname __P((char *, int)); 2682 extern char *newstr __P((const char *)); 2683 #if NISPLUS 2684 extern char *nisplus_default_domain __P((void)); /* extern for Sun */ 2685 #endif /* NISPLUS */ 2686 extern bool path_is_dir __P((char *, bool)); 2687 extern int pickqdir __P((QUEUEGRP *qg, long fsize, ENVELOPE *e)); 2688 extern char *pintvl __P((time_t, bool)); 2689 extern void printav __P((SM_FILE_T *, char **)); 2690 extern void printmailer __P((SM_FILE_T *, MAILER *)); 2691 extern void printnqe __P((SM_FILE_T *, char *)); 2692 extern void printopenfds __P((bool)); 2693 extern void printqueue __P((void)); 2694 extern void printrules __P((void)); 2695 extern pid_t prog_open __P((char **, int *, ENVELOPE *)); 2696 extern bool putline __P((char *, MCI *)); 2697 extern bool putxline __P((char *, size_t, MCI *, int)); 2698 extern void queueup_macros __P((int, SM_FILE_T *, ENVELOPE *)); 2699 extern void readcf __P((char *, bool, ENVELOPE *)); 2700 extern SIGFUNC_DECL reapchild __P((int)); 2701 extern int releasesignal __P((int)); 2702 extern void resetlimits __P((void)); 2703 extern void restart_daemon __P((void)); 2704 extern void restart_marked_work_groups __P((void)); 2705 extern bool rfc822_string __P((char *)); 2706 extern void rmexpstab __P((void)); 2707 extern bool savemail __P((ENVELOPE *, bool)); 2708 extern void seed_random __P((void)); 2709 extern void sendtoargv __P((char **, ENVELOPE *)); 2710 extern void setclientoptions __P((char *)); 2711 extern bool setdaemonoptions __P((char *)); 2712 extern void setdefaults __P((ENVELOPE *)); 2713 extern void setdefuser __P((void)); 2714 extern bool setvendor __P((char *)); 2715 extern void set_op_mode __P((int)); 2716 extern void setoption __P((int, char *, bool, bool, ENVELOPE *)); 2717 extern sigfunc_t setsignal __P((int, sigfunc_t)); 2718 extern void sm_setuserenv __P((const char *, const char *)); 2719 extern void settime __P((ENVELOPE *)); 2720 #if STARTTLS 2721 extern void set_tls_rd_tmo __P((int)); 2722 #else /* STARTTLS */ 2723 #define set_tls_rd_tmo(rd_tmo) 2724 #endif /* STARTTLS */ 2725 extern char *sfgets __P((char *, int, SM_FILE_T *, time_t, char *)); 2726 extern char *shortenstring __P((const char *, size_t)); 2727 extern char *shorten_hostname __P((char [])); 2728 extern bool shorten_rfc822_string __P((char *, size_t)); 2729 extern void shutdown_daemon __P((void)); 2730 extern void sm_closefrom __P((int lowest, int highest)); 2731 extern void sm_close_on_exec __P((int lowest, int highest)); 2732 extern struct hostent *sm_gethostbyname __P((char *, int)); 2733 extern struct hostent *sm_gethostbyaddr __P((char *, int, int)); 2734 extern void sm_getla __P((void)); 2735 extern struct passwd *sm_getpwnam __P((char *)); 2736 extern struct passwd *sm_getpwuid __P((UID_T)); 2737 extern void sm_setproctitle __P((bool, ENVELOPE *, const char *, ...)); 2738 extern pid_t sm_wait __P((int *)); 2739 extern bool split_by_recipient __P((ENVELOPE *e)); 2740 extern void stop_sendmail __P((void)); 2741 extern void stripbackslash __P((char *)); 2742 extern bool strreplnonprt __P((char *, int)); 2743 extern bool strcontainedin __P((bool, char *, char *)); 2744 extern int switch_map_find __P((char *, char *[], short [])); 2745 #if STARTTLS 2746 extern void tls_set_verify __P((SSL_CTX *, SSL *, bool)); 2747 #endif /* STARTTLS */ 2748 extern bool transienterror __P((int)); 2749 extern void truncate_at_delim __P((char *, size_t, int)); 2750 extern void tTflag __P((char *)); 2751 extern void tTsetup __P((unsigned char *, unsigned int, char *)); 2752 extern SIGFUNC_DECL tick __P((int)); 2753 extern char *ttypath __P((void)); 2754 extern void unlockqueue __P((ENVELOPE *)); 2755 #if !HASUNSETENV 2756 extern void unsetenv __P((char *)); 2757 #endif /* !HASUNSETENV */ 2758 2759 /* update file system information: +/- some blocks */ 2760 #if SM_CONF_SHM 2761 extern void upd_qs __P((ENVELOPE *, int, int, char *)); 2762 # define updfs(e, count, space, where) upd_qs(e, count, space, where) 2763 #else /* SM_CONF_SHM */ 2764 # define updfs(e, count, space, where) 2765 # define upd_qs(e, count, space, where) 2766 #endif /* SM_CONF_SHM */ 2767 2768 extern char *username __P((void)); 2769 extern bool usershellok __P((char *, char *)); 2770 extern void vendor_post_defaults __P((ENVELOPE *)); 2771 extern void vendor_pre_defaults __P((ENVELOPE *)); 2772 extern int waitfor __P((pid_t)); 2773 extern bool writable __P((char *, ADDRESS *, long)); 2774 #if SM_HEAP_CHECK 2775 # define xalloc(size) xalloc_tagged(size, __FILE__, __LINE__) 2776 extern char *xalloc_tagged __P((int, char*, int)); 2777 #else /* SM_HEAP_CHECK */ 2778 extern char *xalloc __P((int)); 2779 #endif /* SM_HEAP_CHECK */ 2780 extern void xputs __P((SM_FILE_T *, const char *)); 2781 extern char *xtextify __P((char *, char *)); 2782 extern bool xtextok __P((char *)); 2783 extern int xunlink __P((char *)); 2784 extern char *xuntextify __P((char *)); 2785 2786 2787 #undef EXTERN 2788 #endif /* ! _SENDMAIL_H */ 2789