1 /* 2 * Copyright (c) 1998-2013 Proofpoint, 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 8.1104 2013-11-22 20:51:56 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 /* SASL_VERSION_FULL < 0x020119 */ 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 /* By default use uncompressed IPv6 address format (no "::") */ 203 #ifndef IPV6_FULL 204 # define IPV6_FULL 1 205 #endif 206 207 /* (f)open() modes for queue files */ 208 #define QF_O_EXTRA 0 209 210 #if _FFR_PROXY || _FFR_LOGREPLY 211 # define _FFR_ERRCODE 1 212 #endif 213 214 #define SM_ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0])) 215 216 /* 217 ** An 'argument class' describes the storage allocation status 218 ** of an object pointed to by an argument to a function. 219 */ 220 221 typedef enum 222 { 223 A_HEAP, /* the storage was allocated by malloc, and the 224 * ownership of the storage is ceded by the caller 225 * to the called function. */ 226 A_TEMP, /* The storage is temporary, and is only guaranteed 227 * to be valid for the duration of the function call. */ 228 A_PERM /* The storage is 'permanent': this might mean static 229 * storage, or rpool storage. */ 230 } ARGCLASS_T; 231 232 /* forward references for prototypes */ 233 typedef struct envelope ENVELOPE; 234 typedef struct mailer MAILER; 235 typedef struct queuegrp QUEUEGRP; 236 237 /* 238 ** Address structure. 239 ** Addresses are stored internally in this structure. 240 */ 241 242 struct address 243 { 244 char *q_paddr; /* the printname for the address */ 245 char *q_user; /* user name */ 246 char *q_ruser; /* real user name, or NULL if q_user */ 247 char *q_host; /* host name */ 248 struct mailer *q_mailer; /* mailer to use */ 249 unsigned long q_flags; /* status flags, see below */ 250 uid_t q_uid; /* user-id of receiver (if known) */ 251 gid_t q_gid; /* group-id of receiver (if known) */ 252 char *q_home; /* home dir (local mailer only) */ 253 char *q_fullname; /* full name if known */ 254 struct address *q_next; /* chain */ 255 struct address *q_alias; /* address this results from */ 256 char *q_owner; /* owner of q_alias */ 257 struct address *q_tchain; /* temporary use chain */ 258 #if PIPELINING 259 struct address *q_pchain; /* chain for pipelining */ 260 #endif /* PIPELINING */ 261 char *q_finalrcpt; /* Final-Recipient: DSN header */ 262 char *q_orcpt; /* ORCPT parameter from RCPT TO: line */ 263 char *q_status; /* status code for DSNs */ 264 char *q_rstatus; /* remote status message for DSNs */ 265 time_t q_statdate; /* date of status messages */ 266 char *q_statmta; /* MTA generating q_rstatus */ 267 short q_state; /* address state, see below */ 268 char *q_signature; /* MX-based sorting value */ 269 int q_qgrp; /* index into queue groups */ 270 int q_qdir; /* queue directory inside group */ 271 char *q_message; /* error message */ 272 }; 273 274 typedef struct address ADDRESS; 275 276 /* bit values for q_flags */ 277 #define QGOODUID 0x00000001 /* the q_uid q_gid fields are good */ 278 #define QPRIMARY 0x00000002 /* set from RCPT or argv */ 279 #define QNOTREMOTE 0x00000004 /* address not for remote forwarding */ 280 #define QSELFREF 0x00000008 /* this address references itself */ 281 #define QBOGUSSHELL 0x00000010 /* user has no valid shell listed */ 282 #define QUNSAFEADDR 0x00000020 /* address acquired via unsafe path */ 283 #define QPINGONSUCCESS 0x00000040 /* give return on successful delivery */ 284 #define QPINGONFAILURE 0x00000080 /* give return on failure */ 285 #define QPINGONDELAY 0x00000100 /* give return on message delay */ 286 #define QHASNOTIFY 0x00000200 /* propagate notify parameter */ 287 #define QRELAYED 0x00000400 /* DSN: relayed to non-DSN aware sys */ 288 #define QEXPANDED 0x00000800 /* DSN: undergone list expansion */ 289 #define QDELIVERED 0x00001000 /* DSN: successful final delivery */ 290 #define QDELAYED 0x00002000 /* DSN: message delayed */ 291 #define QALIAS 0x00004000 /* expanded alias */ 292 #define QBYTRACE 0x00008000 /* DeliverBy: trace */ 293 #define QBYNDELAY 0x00010000 /* DeliverBy: notify, delay */ 294 #define QBYNRELAY 0x00020000 /* DeliverBy: notify, relayed */ 295 #define QINTBCC 0x00040000 /* internal Bcc */ 296 #define QDYNMAILER 0x00080000 /* "dynamic mailer" */ 297 #define QTHISPASS 0x40000000 /* temp: address set this pass */ 298 #define QRCPTOK 0x80000000 /* recipient() processed address */ 299 300 #define QDYNMAILFLG 'Y' 301 302 #define Q_PINGFLAGS (QPINGONSUCCESS|QPINGONFAILURE|QPINGONDELAY) 303 304 #if _FFR_RCPTFLAGS 305 # define QMATCHFLAGS (QINTBCC|QDYNMAILER) 306 # define QMATCH_FLAG(a) ((a)->q_flags & QMATCHFLAGS) 307 # define ADDR_FLAGS_MATCH(a, b) (QMATCH_FLAG(a) == QMATCH_FLAG(b)) 308 #else 309 # define ADDR_FLAGS_MATCH(a, b) true 310 #endif 311 312 /* values for q_state */ 313 #define QS_OK 0 /* address ok (for now)/not yet tried */ 314 #define QS_SENT 1 /* good address, delivery complete */ 315 #define QS_BADADDR 2 /* illegal address */ 316 #define QS_QUEUEUP 3 /* save address in queue */ 317 #define QS_RETRY 4 /* retry delivery for next MX */ 318 #define QS_VERIFIED 5 /* verified, but not expanded */ 319 320 /* 321 ** Notice: all of the following values are variations of QS_DONTSEND. 322 ** If new states are added, they must be inserted in the proper place! 323 ** See the macro definition of QS_IS_DEAD() down below. 324 */ 325 326 #define QS_DONTSEND 6 /* don't send to this address */ 327 #define QS_EXPANDED 7 /* expanded */ 328 #define QS_SENDER 8 /* message sender (MeToo) */ 329 #define QS_CLONED 9 /* addr cloned to split envelope */ 330 #define QS_DISCARDED 10 /* rcpt discarded (EF_DISCARD) */ 331 #define QS_REPLACED 11 /* maplocaluser()/UserDB replaced */ 332 #define QS_REMOVED 12 /* removed (removefromlist()) */ 333 #define QS_DUPLICATE 13 /* duplicate suppressed */ 334 #define QS_INCLUDED 14 /* :include: delivery */ 335 #define QS_FATALERR 15 /* fatal error, don't deliver */ 336 337 /* address state testing primitives */ 338 #define QS_IS_OK(s) ((s) == QS_OK) 339 #define QS_IS_SENT(s) ((s) == QS_SENT) 340 #define QS_IS_BADADDR(s) ((s) == QS_BADADDR) 341 #define QS_IS_QUEUEUP(s) ((s) == QS_QUEUEUP) 342 #define QS_IS_RETRY(s) ((s) == QS_RETRY) 343 #define QS_IS_VERIFIED(s) ((s) == QS_VERIFIED) 344 #define QS_IS_EXPANDED(s) ((s) == QS_EXPANDED) 345 #define QS_IS_REMOVED(s) ((s) == QS_REMOVED) 346 #define QS_IS_UNDELIVERED(s) ((s) == QS_OK || \ 347 (s) == QS_QUEUEUP || \ 348 (s) == QS_RETRY || \ 349 (s) == QS_VERIFIED) 350 #define QS_IS_UNMARKED(s) ((s) == QS_OK || \ 351 (s) == QS_RETRY) 352 #define QS_IS_SENDABLE(s) ((s) == QS_OK || \ 353 (s) == QS_QUEUEUP || \ 354 (s) == QS_RETRY) 355 #define QS_IS_ATTEMPTED(s) ((s) == QS_QUEUEUP || \ 356 (s) == QS_RETRY || \ 357 (s) == QS_SENT || \ 358 (s) == QS_DISCARDED) 359 #define QS_IS_DEAD(s) ((s) >= QS_DONTSEND) 360 #define QS_IS_TEMPFAIL(s) ((s) == QS_QUEUEUP || (s) == QS_RETRY) 361 362 #define NULLADDR ((ADDRESS *) NULL) 363 364 extern ADDRESS NullAddress; /* a null (template) address [main.c] */ 365 366 /* for cataddr() */ 367 #define NOSPACESEP 256 368 369 /* functions */ 370 extern void cataddr __P((char **, char **, char *, int, int, bool)); 371 extern char *crackaddr __P((char *, ENVELOPE *)); 372 extern bool emptyaddr __P((ADDRESS *)); 373 extern ADDRESS *getctladdr __P((ADDRESS *)); 374 extern int include __P((char *, bool, ADDRESS *, ADDRESS **, int, ENVELOPE *)); 375 extern bool invalidaddr __P((char *, char *, bool)); 376 extern ADDRESS *parseaddr __P((char *, ADDRESS *, int, int, char **, 377 ENVELOPE *, bool)); 378 extern char **prescan __P((char *, int, char[], int, char **, unsigned char *, bool)); 379 extern void printaddr __P((SM_FILE_T *, ADDRESS *, bool)); 380 extern ADDRESS *recipient __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 381 extern char *remotename __P((char *, MAILER *, int, int *, ENVELOPE *)); 382 extern int rewrite __P((char **, int, int, ENVELOPE *, int)); 383 extern bool sameaddr __P((ADDRESS *, ADDRESS *)); 384 extern int sendtolist __P((char *, ADDRESS *, ADDRESS **, int, ENVELOPE *)); 385 #if MILTER 386 extern int removefromlist __P((char *, ADDRESS **, ENVELOPE *)); 387 #endif /* MILTER */ 388 extern void setsender __P((char *, ENVELOPE *, char **, int, bool)); 389 typedef void esmtp_args_F __P((ADDRESS *, char *, char *, ENVELOPE *)); 390 extern void parse_esmtp_args __P((ENVELOPE *, ADDRESS *, char *, char *, 391 char *, char *args[], esmtp_args_F)); 392 extern esmtp_args_F mail_esmtp_args; 393 extern esmtp_args_F rcpt_esmtp_args; 394 extern void reset_mail_esmtp_args __P((ENVELOPE *)); 395 396 /* macro to simplify the common call to rewrite() */ 397 #define REWRITE(pvp, rs, env) rewrite(pvp, rs, 0, env, MAXATOM) 398 399 /* 400 ** Token Tables for prescan 401 */ 402 403 extern unsigned char ExtTokenTab[256]; /* external strings */ 404 extern unsigned char IntTokenTab[256]; /* internal strings */ 405 406 407 /* 408 ** Mailer definition structure. 409 ** Every mailer known to the system is declared in this 410 ** structure. It defines the pathname of the mailer, some 411 ** flags associated with it, and the argument vector to 412 ** pass to it. The flags are defined in conf.c 413 ** 414 ** The argument vector is expanded before actual use. All 415 ** words except the first are passed through the macro 416 ** processor. 417 */ 418 419 struct mailer 420 { 421 char *m_name; /* symbolic name of this mailer */ 422 char *m_mailer; /* pathname of the mailer to use */ 423 char *m_mtatype; /* type of this MTA */ 424 char *m_addrtype; /* type for addresses */ 425 char *m_diagtype; /* type for diagnostics */ 426 BITMAP256 m_flags; /* status flags, see below */ 427 short m_mno; /* mailer number internally */ 428 short m_nice; /* niceness to run at (mostly for prog) */ 429 char **m_argv; /* template argument vector */ 430 short m_sh_rwset; /* rewrite set: sender header addresses */ 431 short m_se_rwset; /* rewrite set: sender envelope addresses */ 432 short m_rh_rwset; /* rewrite set: recipient header addresses */ 433 short m_re_rwset; /* rewrite set: recipient envelope addresses */ 434 char *m_eol; /* end of line string */ 435 long m_maxsize; /* size limit on message to this mailer */ 436 int m_linelimit; /* max # characters per line */ 437 int m_maxdeliveries; /* max deliveries per mailer connection */ 438 char *m_execdir; /* directory to chdir to before execv */ 439 char *m_rootdir; /* directory to chroot to before execv */ 440 uid_t m_uid; /* UID to run as */ 441 gid_t m_gid; /* GID to run as */ 442 char *m_defcharset; /* default character set */ 443 time_t m_wait; /* timeout to wait for end */ 444 int m_maxrcpt; /* max recipients per envelope client-side */ 445 short m_qgrp; /* queue group for this mailer */ 446 }; 447 448 /* bits for m_flags */ 449 #define M_xSMTP 0x01 /* internal: {ES,S,L}MTP */ 450 #define M_ESMTP 'a' /* run Extended SMTP */ 451 #define M_ALIASABLE 'A' /* user can be LHS of an alias */ 452 #define M_BLANKEND 'b' /* ensure blank line at end of message */ 453 #define M_STRIPBACKSL 'B' /* strip all leading backslashes from user */ 454 #define M_NOCOMMENT 'c' /* don't include comment part of address */ 455 #define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ 456 #define M_NOBRACKET 'd' /* never angle bracket envelope route-addrs */ 457 /* 'D' CF: include Date: */ 458 #define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ 459 #define M_ESCFROM 'E' /* escape From lines to >From */ 460 #define M_FOPT 'f' /* mailer takes picky -f flag */ 461 /* 'F' CF: include From: or Resent-From: */ 462 #define M_NO_NULL_FROM 'g' /* sender of errors should be $g */ 463 #define M_HST_UPPER 'h' /* preserve host case distinction */ 464 #define M_PREHEAD 'H' /* MAIL11V3: preview headers */ 465 #define M_UDBENVELOPE 'i' /* do udbsender rewriting on envelope */ 466 #define M_INTERNAL 'I' /* SMTP to another sendmail site */ 467 #define M_UDBRECIPIENT 'j' /* do udbsender rewriting on recipient lines */ 468 #define M_NOLOOPCHECK 'k' /* don't check for loops in HELO command */ 469 #define M_CHUNKING 'K' /* CHUNKING: reserved for future use */ 470 #define M_LOCALMAILER 'l' /* delivery is to this host */ 471 #define M_LIMITS 'L' /* must enforce SMTP line limits */ 472 #define M_MUSER 'm' /* can handle multiple users at once */ 473 /* 'M' CF: include Message-Id: */ 474 #define M_NHDR 'n' /* don't insert From line */ 475 #define M_MANYSTATUS 'N' /* MAIL11V3: DATA returns multi-status */ 476 #define M_RUNASRCPT 'o' /* always run mailer as recipient */ 477 /* 'O' free? */ 478 #define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ 479 /* 'P' CF: include Return-Path: */ 480 #define M_VRFY250 'q' /* VRFY command returns 250 instead of 252 */ 481 #define M_ROPT 'r' /* mailer takes picky -r flag */ 482 #define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */ 483 #define M_STRIPQ 's' /* strip quote chars from user/host */ 484 #define M_SPECIFIC_UID 'S' /* run as specific uid/gid */ 485 #define M_USR_UPPER 'u' /* preserve user case distinction */ 486 #define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ 487 #define M_CONTENT_LEN 'v' /* add Content-Length: header (SVr4) */ 488 /* 'V' UIUC: !-relativize all addresses */ 489 #define M_HASPWENT 'w' /* check for /etc/passwd entry */ 490 #define M_NOHOSTSTAT 'W' /* ignore long term host status information */ 491 /* 'x' CF: include Full-Name: */ 492 #define M_XDOT 'X' /* use hidden-dot algorithm */ 493 /* 'y' free? */ 494 /* 'Y' free? */ 495 #define M_LMTP 'z' /* run Local Mail Transport Protocol */ 496 #define M_DIALDELAY 'Z' /* apply dial delay sleeptime */ 497 #define M_NOMX '0' /* turn off MX lookups */ 498 #define M_NONULLS '1' /* don't send null bytes */ 499 #define M_FSMTP '2' /* force SMTP (no ESMTP even if offered) */ 500 /* '4' free? */ 501 #define M_EBCDIC '3' /* extend Q-P encoding for EBCDIC */ 502 #define M_TRYRULESET5 '5' /* use ruleset 5 after local aliasing */ 503 #define M_7BITHDRS '6' /* strip headers to 7 bits even in 8 bit path */ 504 #define M_7BITS '7' /* use 7-bit path */ 505 #define M_8BITS '8' /* force "just send 8" behaviour */ 506 #define M_MAKE8BIT '9' /* convert 7 -> 8 bit if appropriate */ 507 #define M_CHECKINCLUDE ':' /* check for :include: files */ 508 #define M_CHECKPROG '|' /* check for |program addresses */ 509 #define M_CHECKFILE '/' /* check for /file addresses */ 510 #define M_CHECKUDB '@' /* user can be user database key */ 511 #define M_CHECKHDIR '~' /* SGI: check for valid home directory */ 512 #define M_HOLD '%' /* Hold delivery until ETRN/-qI/-qR/-qS */ 513 #define M_PLUS '+' /* Reserved: Used in mc for adding new flags */ 514 #define M_MINUS '-' /* Reserved: Used in mc for removing flags */ 515 #define M_NOMHHACK '!' /* Don't perform HM hack dropping explicit from */ 516 517 /* functions */ 518 extern void initerrmailers __P((void)); 519 extern void makemailer __P((char *)); 520 extern void makequeue __P((char *, bool)); 521 extern void runqueueevent __P((int)); 522 #if _FFR_QUEUE_RUN_PARANOIA 523 extern bool checkqueuerunner __P((void)); 524 #endif /* _FFR_QUEUE_RUN_PARANOIA */ 525 526 EXTERN MAILER *FileMailer; /* ptr to *file* mailer */ 527 EXTERN MAILER *InclMailer; /* ptr to *include* mailer */ 528 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 529 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 530 #if _FFR_RCPTFLAGS 531 EXTERN MAILER *Mailer[MAXMAILERS * 2 + 1]; 532 #else 533 EXTERN MAILER *Mailer[MAXMAILERS + 1]; 534 #endif 535 536 /* 537 ** Queue group definition structure. 538 ** Every queue group known to the system is declared in this structure. 539 ** It defines the basic pathname of the queue group, some flags 540 ** associated with it, and the argument vector to pass to it. 541 */ 542 543 struct qpaths_s 544 { 545 char *qp_name; /* name of queue dir, relative path */ 546 short qp_subdirs; /* use subdirs? */ 547 short qp_fsysidx; /* file system index of this directory */ 548 # if SM_CONF_SHM 549 int qp_idx; /* index into array for queue information */ 550 # endif /* SM_CONF_SHM */ 551 }; 552 553 typedef struct qpaths_s QPATHS; 554 555 struct queuegrp 556 { 557 char *qg_name; /* symbolic name of this queue group */ 558 559 /* 560 ** For now this is the same across all queue groups. 561 ** Otherwise we have to play around with chdir(). 562 */ 563 564 char *qg_qdir; /* common component of queue directory */ 565 short qg_index; /* queue number internally, index in Queue[] */ 566 int qg_maxqrun; /* max # of jobs in 1 queuerun */ 567 int qg_numqueues; /* number of queues in this queue */ 568 569 /* 570 ** qg_queueintvl == 0 denotes that no individual value is used. 571 ** Whatever accesses this must deal with "<= 0" as 572 ** "not set, use appropriate default". 573 */ 574 575 time_t qg_queueintvl; /* interval for queue runs */ 576 QPATHS *qg_qpaths; /* list of queue directories */ 577 BITMAP256 qg_flags; /* status flags, see below */ 578 short qg_nice; /* niceness for queue run */ 579 int qg_wgrp; /* Assigned to this work group */ 580 int qg_maxlist; /* max items in work queue for this group */ 581 int qg_curnum; /* current number of queue for queue runs */ 582 int qg_maxrcpt; /* max recipients per envelope, 0==no limit */ 583 584 time_t qg_nextrun; /* time for next queue runs */ 585 #if _FFR_QUEUE_GROUP_SORTORDER 586 short qg_sortorder; /* how do we sort this queuerun */ 587 #endif /* _FFR_QUEUE_GROUP_SORTORDER */ 588 #if 0 589 long qg_wkrcptfact; /* multiplier for # recipients -> priority */ 590 long qg_qfactor; /* slope of queue function */ 591 bool qg_doqueuerun; /* XXX flag is it time to do a queuerun */ 592 #endif /* 0 */ 593 }; 594 595 /* bits for qg_flags (XXX: unused as of now) */ 596 #define QD_DEFINED ((char) 1) /* queue group has been defined */ 597 #define QD_FORK 'f' /* fork queue runs */ 598 599 extern void filesys_update __P((void)); 600 #if _FFR_ANY_FREE_FS 601 extern bool filesys_free __P((long)); 602 #endif /* _FFR_ANY_FREE_FS */ 603 604 #if SASL 605 /* 606 ** SASL 607 */ 608 609 /* lines in authinfo file or index into SASL_AI_T */ 610 # define SASL_WRONG (-1) 611 # define SASL_USER 0 /* authorization id (user) */ 612 # define SASL_AUTHID 1 /* authentication id */ 613 # define SASL_PASSWORD 2 /* password fuer authid */ 614 # define SASL_DEFREALM 3 /* realm to use */ 615 # define SASL_MECHLIST 4 /* list of mechanisms to try */ 616 # define SASL_ID_REALM 5 /* authid@defrealm */ 617 618 /* 619 ** Current mechanism; this is just used to convey information between 620 ** invocation of SASL callback functions. 621 ** It must be last in the list, because it's not allocated by us 622 ** and hence we don't free() it. 623 */ 624 # define SASL_MECH 6 625 # define SASL_ENTRIES 7 /* number of entries in array */ 626 627 # define SASL_USER_BIT (1 << SASL_USER) 628 # define SASL_AUTHID_BIT (1 << SASL_AUTHID) 629 # define SASL_PASSWORD_BIT (1 << SASL_PASSWORD) 630 # define SASL_DEFREALM_BIT (1 << SASL_DEFREALM) 631 # define SASL_MECHLIST_BIT (1 << SASL_MECHLIST) 632 633 /* authenticated? */ 634 # define SASL_NOT_AUTH 0 /* not authenticated */ 635 # define SASL_PROC_AUTH 1 /* in process of authenticating */ 636 # define SASL_IS_AUTH 2 /* authenticated */ 637 638 /* SASL options */ 639 # define SASL_AUTH_AUTH 0x1000 /* use auth= only if authenticated */ 640 # if SASL >= 20101 641 # define SASL_SEC_MASK SASL_SEC_MAXIMUM /* mask for SASL_SEC_* values: sasl.h */ 642 # else /* SASL >= 20101 */ 643 # define SASL_SEC_MASK 0x0fff /* mask for SASL_SEC_* values: sasl.h */ 644 # if (SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 || \ 645 (SASL_SEC_NOACTIVE & SASL_SEC_MASK) == 0 || \ 646 (SASL_SEC_NODICTIONARY & SASL_SEC_MASK) == 0 || \ 647 (SASL_SEC_FORWARD_SECRECY & SASL_SEC_MASK) == 0 || \ 648 (SASL_SEC_NOANONYMOUS & SASL_SEC_MASK) == 0 || \ 649 (SASL_SEC_PASS_CREDENTIALS & SASL_SEC_MASK) == 0 650 ERROR: change SASL_SEC_MASK_ notify sendmail.org! 651 # endif /* SASL_SEC_NOPLAINTEXT & SASL_SEC_MASK) == 0 ... */ 652 # endif /* SASL >= 20101 */ 653 # define MAXOUTLEN 8192 /* length of output buffer, should be 2^n */ 654 655 /* functions */ 656 extern char *intersect __P((char *, char *, SM_RPOOL_T *)); 657 extern char *iteminlist __P((char *, char *, char *)); 658 # if SASL >= 20000 659 extern int proxy_policy __P((sasl_conn_t *, void *, const char *, unsigned, const char *, unsigned, const char *, unsigned, struct propctx *)); 660 extern int safesaslfile __P((void *, const char *, sasl_verify_type_t)); 661 # else /* SASL >= 20000 */ 662 extern int proxy_policy __P((void *, const char *, const char *, const char **, const char **)); 663 # if SASL > 10515 664 extern int safesaslfile __P((void *, char *, int)); 665 # else /* SASL > 10515 */ 666 extern int safesaslfile __P((void *, char *)); 667 # endif /* SASL > 10515 */ 668 # endif /* SASL >= 20000 */ 669 extern void stop_sasl_client __P((void)); 670 671 /* structure to store authinfo */ 672 typedef char *SASL_AI_T[SASL_ENTRIES]; 673 674 EXTERN char *AuthMechanisms; /* AUTH mechanisms */ 675 EXTERN char *AuthRealm; /* AUTH realm */ 676 EXTERN char *SASLInfo; /* file with AUTH info */ 677 EXTERN int SASLOpts; /* options for SASL */ 678 EXTERN int MaxSLBits; /* max. encryption bits for SASL */ 679 #endif /* SASL */ 680 681 /* 682 ** Structure to store macros. 683 */ 684 typedef struct 685 { 686 SM_RPOOL_T *mac_rpool; /* resource pool */ 687 BITMAP256 mac_allocated; /* storage has been alloc()? */ 688 char *mac_table[MAXMACROID + 1]; /* macros */ 689 } MACROS_T; 690 691 EXTERN MACROS_T GlobalMacros; 692 693 /* 694 ** Information about currently open connections to mailers, or to 695 ** hosts that we have looked up recently. 696 */ 697 698 #define MCI struct mailer_con_info 699 700 MCI 701 { 702 unsigned long mci_flags; /* flag bits, see below */ 703 short mci_errno; /* error number on last connection */ 704 short mci_herrno; /* h_errno from last DNS lookup */ 705 short mci_exitstat; /* exit status from last connection */ 706 short mci_state; /* SMTP state */ 707 int mci_deliveries; /* delivery attempts for connection */ 708 long mci_maxsize; /* max size this server will accept */ 709 SM_FILE_T *mci_in; /* input side of connection */ 710 SM_FILE_T *mci_out; /* output side of connection */ 711 pid_t mci_pid; /* process id of subordinate proc */ 712 char *mci_phase; /* SMTP phase string */ 713 struct mailer *mci_mailer; /* ptr to the mailer for this conn */ 714 char *mci_host; /* host name */ 715 char *mci_status; /* DSN status to be copied to addrs */ 716 char *mci_rstatus; /* SMTP status to be copied to addrs */ 717 time_t mci_lastuse; /* last usage time */ 718 SM_FILE_T *mci_statfile; /* long term status file */ 719 char *mci_heloname; /* name to use as HELO arg */ 720 long mci_min_by; /* minimum DELIVERBY */ 721 bool mci_retryrcpt; /* tempfail for at least one rcpt */ 722 char *mci_tolist; /* list of valid recipients */ 723 SM_RPOOL_T *mci_rpool; /* resource pool */ 724 #if PIPELINING 725 int mci_okrcpts; /* number of valid recipients */ 726 ADDRESS *mci_nextaddr; /* next address for pipelined status */ 727 #endif /* PIPELINING */ 728 #if SASL 729 SASL_AI_T mci_sai; /* authentication info */ 730 bool mci_sasl_auth; /* authenticated? */ 731 int mci_sasl_string_len; 732 char *mci_sasl_string; /* sasl reply string */ 733 char *mci_saslcap; /* SASL list of mechanisms */ 734 sasl_conn_t *mci_conn; /* SASL connection */ 735 #endif /* SASL */ 736 #if STARTTLS 737 SSL *mci_ssl; /* SSL connection */ 738 #endif /* STARTTLS */ 739 MACROS_T mci_macro; /* macro definitions */ 740 }; 741 742 743 /* flag bits */ 744 #define MCIF_VALID 0x00000001 /* this entry is valid */ 745 /* 0x00000002 unused, was MCIF_TEMP */ 746 #define MCIF_CACHED 0x00000004 /* currently in open cache */ 747 #define MCIF_ESMTP 0x00000008 /* this host speaks ESMTP */ 748 #define MCIF_EXPN 0x00000010 /* EXPN command supported */ 749 #define MCIF_SIZE 0x00000020 /* SIZE option supported */ 750 #define MCIF_8BITMIME 0x00000040 /* BODY=8BITMIME supported */ 751 #define MCIF_7BIT 0x00000080 /* strip this message to 7 bits */ 752 /* 0x00000100 unused, was MCIF_MULTSTAT: MAIL11V3: handles MULT status */ 753 #define MCIF_INHEADER 0x00000200 /* currently outputing header */ 754 #define MCIF_CVT8TO7 0x00000400 /* convert from 8 to 7 bits */ 755 #define MCIF_DSN 0x00000800 /* DSN extension supported */ 756 #define MCIF_8BITOK 0x00001000 /* OK to send 8 bit characters */ 757 #define MCIF_CVT7TO8 0x00002000 /* convert from 7 to 8 bits */ 758 #define MCIF_INMIME 0x00004000 /* currently reading MIME header */ 759 #define MCIF_AUTH 0x00008000 /* AUTH= supported */ 760 #define MCIF_AUTHACT 0x00010000 /* SASL (AUTH) active */ 761 #define MCIF_ENHSTAT 0x00020000 /* ENHANCEDSTATUSCODES supported */ 762 #define MCIF_PIPELINED 0x00040000 /* PIPELINING supported */ 763 #define MCIF_VERB 0x00080000 /* VERB supported */ 764 #if STARTTLS 765 #define MCIF_TLS 0x00100000 /* STARTTLS supported */ 766 #define MCIF_TLSACT 0x00200000 /* STARTTLS active */ 767 #else /* STARTTLS */ 768 #define MCIF_TLS 0 769 #define MCIF_TLSACT 0 770 #endif /* STARTTLS */ 771 #define MCIF_DLVR_BY 0x00400000 /* DELIVERBY */ 772 #if _FFR_IGNORE_EXT_ON_HELO 773 # define MCIF_HELO 0x00800000 /* we used HELO: ignore extensions */ 774 #endif /* _FFR_IGNORE_EXT_ON_HELO */ 775 #define MCIF_INLONGLINE 0x01000000 /* in the middle of a long line */ 776 #define MCIF_AUTH2 0x02000000 /* got 2 AUTH lines */ 777 #define MCIF_ONLY_EHLO 0x10000000 /* use only EHLO in smtpinit */ 778 #if _FFR_HANDLE_HDR_RW_TEMPFAIL 779 /* an error is not sticky (if put{header,body}() etc fail) */ 780 # define MCIF_NOTSTICKY 0x20000000 781 #else 782 # define MCIF_NOTSTICKY 0 783 #endif 784 785 #define MCIF_EXTENS (MCIF_EXPN | MCIF_SIZE | MCIF_8BITMIME | MCIF_DSN | MCIF_8BITOK | MCIF_AUTH | MCIF_ENHSTAT | MCIF_TLS | MCIF_AUTH2) 786 787 /* states */ 788 #define MCIS_CLOSED 0 /* no traffic on this connection */ 789 #define MCIS_OPENING 1 /* sending initial protocol */ 790 #define MCIS_OPEN 2 /* open, initial protocol sent */ 791 #define MCIS_MAIL 3 /* MAIL command sent */ 792 #define MCIS_RCPT 4 /* RCPT commands being sent */ 793 #define MCIS_DATA 5 /* DATA command sent */ 794 #define MCIS_QUITING 6 /* running quit protocol */ 795 #define MCIS_SSD 7 /* service shutting down */ 796 #define MCIS_ERROR 8 /* I/O error on connection */ 797 798 /* functions */ 799 extern void mci_cache __P((MCI *)); 800 extern void mci_close __P((MCI *, char *where)); 801 extern void mci_dump __P((SM_FILE_T *, MCI *, bool)); 802 extern void mci_dump_all __P((SM_FILE_T *, bool)); 803 extern void mci_flush __P((bool, MCI *)); 804 extern void mci_clr_extensions __P((MCI *)); 805 extern MCI *mci_get __P((char *, MAILER *)); 806 extern int mci_lock_host __P((MCI *)); 807 extern bool mci_match __P((char *, MAILER *)); 808 extern int mci_print_persistent __P((char *, char *)); 809 extern int mci_purge_persistent __P((char *, char *)); 810 extern MCI **mci_scan __P((MCI *)); 811 extern void mci_setstat __P((MCI *, int, char *, char *)); 812 extern void mci_store_persistent __P((MCI *)); 813 extern int mci_traverse_persistent __P((int (*)(char *, char *), char *)); 814 extern void mci_unlock_host __P((MCI *)); 815 816 EXTERN int MaxMciCache; /* maximum entries in MCI cache */ 817 EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ 818 EXTERN time_t MciInfoTimeout; /* how long 'til we retry down hosts */ 819 820 /* 821 ** Header structure. 822 ** This structure is used internally to store header items. 823 */ 824 825 struct header 826 { 827 char *h_field; /* the name of the field */ 828 char *h_value; /* the value of that field */ 829 struct header *h_link; /* the next header */ 830 unsigned char h_macro; /* include header if macro defined */ 831 unsigned long h_flags; /* status bits, see below */ 832 BITMAP256 h_mflags; /* m_flags bits needed */ 833 }; 834 835 typedef struct header HDR; 836 837 /* 838 ** Header information structure. 839 ** Defined in conf.c, this struct declares the header fields 840 ** that have some magic meaning. 841 */ 842 843 struct hdrinfo 844 { 845 char *hi_field; /* the name of the field */ 846 unsigned long hi_flags; /* status bits, see below */ 847 char *hi_ruleset; /* validity check ruleset */ 848 }; 849 850 extern struct hdrinfo HdrInfo[]; 851 852 /* bits for h_flags and hi_flags */ 853 #define H_EOH 0x00000001 /* field terminates header */ 854 #define H_RCPT 0x00000002 /* contains recipient addresses */ 855 #define H_DEFAULT 0x00000004 /* if another value is found, drop this */ 856 #define H_RESENT 0x00000008 /* this address is a "Resent-..." address */ 857 #define H_CHECK 0x00000010 /* check h_mflags against m_flags */ 858 #define H_ACHECK 0x00000020 /* ditto, but always (not just default) */ 859 #define H_FORCE 0x00000040 /* force this field, even if default */ 860 #define H_TRACE 0x00000080 /* this field contains trace information */ 861 #define H_FROM 0x00000100 /* this is a from-type field */ 862 #define H_VALID 0x00000200 /* this field has a validated value */ 863 #define H_RECEIPTTO 0x00000400 /* field has return receipt info */ 864 #define H_ERRORSTO 0x00000800 /* field has error address info */ 865 #define H_CTE 0x00001000 /* field is a content-transfer-encoding */ 866 #define H_CTYPE 0x00002000 /* this is a content-type field */ 867 #define H_BCC 0x00004000 /* Bcc: header: strip value or delete */ 868 #define H_ENCODABLE 0x00008000 /* field can be RFC 1522 encoded */ 869 #define H_STRIPCOMM 0x00010000 /* header check: strip comments */ 870 #define H_BINDLATE 0x00020000 /* only expand macros at deliver */ 871 #define H_USER 0x00040000 /* header came from the user/SMTP */ 872 873 /* bits for chompheader() */ 874 #define CHHDR_DEF 0x0001 /* default header */ 875 #define CHHDR_CHECK 0x0002 /* call ruleset for header */ 876 #define CHHDR_USER 0x0004 /* header from user */ 877 #define CHHDR_QUEUE 0x0008 /* header from queue file */ 878 879 /* functions */ 880 extern void addheader __P((char *, char *, int, ENVELOPE *, bool)); 881 extern unsigned long chompheader __P((char *, int, HDR **, ENVELOPE *)); 882 extern bool commaize __P((HDR *, char *, bool, MCI *, ENVELOPE *, int)); 883 extern HDR *copyheader __P((HDR *, SM_RPOOL_T *)); 884 extern void eatheader __P((ENVELOPE *, bool, bool)); 885 extern char *hvalue __P((char *, HDR *)); 886 extern void insheader __P((int, char *, char *, int, ENVELOPE *, bool)); 887 extern bool isheader __P((char *)); 888 extern bool putfromline __P((MCI *, ENVELOPE *)); 889 extern void setupheaders __P((void)); 890 891 /* 892 ** Performance monitoring 893 */ 894 895 #define TIMERS struct sm_timers 896 897 TIMERS 898 { 899 TIMER ti_overall; /* the whole process */ 900 }; 901 902 903 #define PUSHTIMER(l, t) { if (tTd(98, l)) pushtimer(&t); } 904 #define POPTIMER(l, t) { if (tTd(98, l)) poptimer(&t); } 905 906 /* 907 ** Envelope structure. 908 ** This structure defines the message itself. There is usually 909 ** only one of these -- for the message that we originally read 910 ** and which is our primary interest -- but other envelopes can 911 ** be generated during processing. For example, error messages 912 ** will have their own envelope. 913 */ 914 915 struct envelope 916 { 917 HDR *e_header; /* head of header list */ 918 long e_msgpriority; /* adjusted priority of this message */ 919 time_t e_ctime; /* time message appeared in the queue */ 920 char *e_to; /* (list of) target person(s) */ 921 ADDRESS e_from; /* the person it is from */ 922 char *e_sender; /* e_from.q_paddr w comments stripped */ 923 char **e_fromdomain; /* the domain part of the sender */ 924 ADDRESS *e_sendqueue; /* list of message recipients */ 925 ADDRESS *e_errorqueue; /* the queue for error responses */ 926 927 /* 928 ** Overflow detection is based on < 0, so don't change this 929 ** to unsigned. We don't use unsigned and == ULONG_MAX because 930 ** some libc's don't have strtoul(), see mail_esmtp_args(). 931 */ 932 933 long e_msgsize; /* size of the message in bytes */ 934 char *e_msgid; /* message id (for logging) */ 935 unsigned long e_flags; /* flags, see below */ 936 int e_nrcpts; /* number of recipients */ 937 short e_class; /* msg class (priority, junk, etc.) */ 938 short e_hopcount; /* number of times processed */ 939 short e_nsent; /* number of sends since checkpoint */ 940 short e_sendmode; /* message send mode */ 941 short e_errormode; /* error return mode */ 942 short e_timeoutclass; /* message timeout class */ 943 bool (*e_puthdr)__P((MCI *, HDR *, ENVELOPE *, int)); 944 /* function to put header of message */ 945 bool (*e_putbody)__P((MCI *, ENVELOPE *, char *)); 946 /* function to put body of message */ 947 ENVELOPE *e_parent; /* the message this one encloses */ 948 ENVELOPE *e_sibling; /* the next envelope of interest */ 949 char *e_bodytype; /* type of message body */ 950 SM_FILE_T *e_dfp; /* data file */ 951 char *e_id; /* code for this entry in queue */ 952 #if _FFR_SESSID 953 char *e_sessid; /* session ID for this envelope */ 954 #endif /* _FFR_SESSID */ 955 int e_qgrp; /* queue group (index into queues) */ 956 int e_qdir; /* index into queue directories */ 957 int e_dfqgrp; /* data file queue group index */ 958 int e_dfqdir; /* data file queue directory index */ 959 int e_xfqgrp; /* queue group (index into queues) */ 960 int e_xfqdir; /* index into queue directories (xf) */ 961 SM_FILE_T *e_xfp; /* transcript file */ 962 SM_FILE_T *e_lockfp; /* the lock file for this message */ 963 char *e_message; /* error message; readonly; NULL, 964 * or allocated from e_rpool */ 965 char *e_statmsg; /* stat msg (changes per delivery). 966 * readonly. NULL or allocated from 967 * e_rpool. */ 968 char *e_quarmsg; /* why envelope is quarantined */ 969 char e_qfletter; /* queue file letter on disk */ 970 char *e_msgboundary; /* MIME-style message part boundary */ 971 char *e_origrcpt; /* original recipient (one only) */ 972 char *e_envid; /* envelope id from MAIL FROM: line */ 973 char *e_status; /* DSN status for this message */ 974 time_t e_dtime; /* time of last delivery attempt */ 975 int e_ntries; /* number of delivery attempts */ 976 dev_t e_dfdev; /* data file device (crash recovery) */ 977 ino_t e_dfino; /* data file inode (crash recovery) */ 978 MACROS_T e_macro; /* macro definitions */ 979 MCI *e_mci; /* connection info */ 980 char *e_auth_param; /* readonly; NULL or static storage or 981 * allocated from e_rpool */ 982 TIMERS e_timers; /* per job timers */ 983 long e_deliver_by; /* deliver by */ 984 int e_dlvr_flag; /* deliver by flag */ 985 SM_RPOOL_T *e_rpool; /* resource pool for this envelope */ 986 unsigned int e_features; /* server features */ 987 #define ENHSC_LEN 11 988 #if _FFR_MILTER_ENHSC 989 char e_enhsc[ENHSC_LEN]; /* enhanced status code */ 990 #endif /* _FFR_MILTER_ENHSC */ 991 #if _FFR_ERRCODE 992 /* smtp error codes during delivery */ 993 int e_rcode; /* reply code */ 994 char e_renhsc[ENHSC_LEN]; /* enhanced status code */ 995 char *e_text; /* reply text */ 996 #endif /* _FFR_ERRCODE */ 997 }; 998 999 #define PRT_NONNEGL(v) ((v) < 0 ? LONG_MAX : (v)) 1000 1001 /* values for e_flags */ 1002 #define EF_OLDSTYLE 0x00000001L /* use spaces (not commas) in hdrs */ 1003 #define EF_INQUEUE 0x00000002L /* this message is fully queued */ 1004 #define EF_NO_BODY_RETN 0x00000004L /* omit message body on error */ 1005 #define EF_CLRQUEUE 0x00000008L /* disk copy is no longer needed */ 1006 #define EF_SENDRECEIPT 0x00000010L /* send a return receipt */ 1007 #define EF_FATALERRS 0x00000020L /* fatal errors occurred */ 1008 #define EF_DELETE_BCC 0x00000040L /* delete Bcc: headers entirely */ 1009 #define EF_RESPONSE 0x00000080L /* this is an error or return receipt */ 1010 #define EF_RESENT 0x00000100L /* this message is being forwarded */ 1011 #define EF_VRFYONLY 0x00000200L /* verify only (don't expand aliases) */ 1012 #define EF_WARNING 0x00000400L /* warning message has been sent */ 1013 #define EF_QUEUERUN 0x00000800L /* this envelope is from queue */ 1014 #define EF_GLOBALERRS 0x00001000L /* treat errors as global */ 1015 #define EF_PM_NOTIFY 0x00002000L /* send return mail to postmaster */ 1016 #define EF_METOO 0x00004000L /* send to me too */ 1017 #define EF_LOGSENDER 0x00008000L /* need to log the sender */ 1018 #define EF_NORECEIPT 0x00010000L /* suppress all return-receipts */ 1019 #define EF_HAS8BIT 0x00020000L /* at least one 8-bit char in body */ 1020 #define EF_NL_NOT_EOL 0x00040000L /* don't accept raw NL as EOLine */ 1021 #define EF_CRLF_NOT_EOL 0x00080000L /* don't accept CR-LF as EOLine */ 1022 #define EF_RET_PARAM 0x00100000L /* RCPT command had RET argument */ 1023 #define EF_HAS_DF 0x00200000L /* set when data file is instantiated */ 1024 #define EF_IS_MIME 0x00400000L /* really is a MIME message */ 1025 #define EF_DONT_MIME 0x00800000L /* never MIME this message */ 1026 #define EF_DISCARD 0x01000000L /* discard the message */ 1027 #define EF_TOOBIG 0x02000000L /* message is too big */ 1028 #define EF_SPLIT 0x04000000L /* envelope has been split */ 1029 #define EF_UNSAFE 0x08000000L /* unsafe: read from untrusted source */ 1030 #define EF_TOODEEP 0x10000000L /* message is nested too deep */ 1031 1032 #define DLVR_NOTIFY 0x01 1033 #define DLVR_RETURN 0x02 1034 #define DLVR_TRACE 0x10 1035 #define IS_DLVR_NOTIFY(e) (((e)->e_dlvr_flag & DLVR_NOTIFY) != 0) 1036 #define IS_DLVR_RETURN(e) (((e)->e_dlvr_flag & DLVR_RETURN) != 0) 1037 #define IS_DLVR_TRACE(e) (((e)->e_dlvr_flag & DLVR_TRACE) != 0) 1038 #define IS_DLVR_BY(e) ((e)->e_dlvr_flag != 0) 1039 1040 #define BODYTYPE_NONE (0) 1041 #define BODYTYPE_7BIT (1) 1042 #define BODYTYPE_8BITMIME (2) 1043 #define BODYTYPE_ILLEGAL (-1) 1044 #define BODYTYPE_VALID(b) ((b) == BODYTYPE_7BIT || (b) == BODYTYPE_8BITMIME) 1045 1046 extern ENVELOPE BlankEnvelope; 1047 1048 /* functions */ 1049 extern void clearenvelope __P((ENVELOPE *, bool, SM_RPOOL_T *)); 1050 extern int dropenvelope __P((ENVELOPE *, bool, bool)); 1051 extern ENVELOPE *newenvelope __P((ENVELOPE *, ENVELOPE *, SM_RPOOL_T *)); 1052 extern void clrsessenvelope __P((ENVELOPE *)); 1053 extern void printenvflags __P((ENVELOPE *)); 1054 extern bool putbody __P((MCI *, ENVELOPE *, char *)); 1055 extern bool putheader __P((MCI *, HDR *, ENVELOPE *, int)); 1056 1057 /* 1058 ** Message priority classes. 1059 ** 1060 ** The message class is read directly from the Priority: header 1061 ** field in the message. 1062 ** 1063 ** CurEnv->e_msgpriority is the number of bytes in the message plus 1064 ** the creation time (so that jobs ``tend'' to be ordered correctly), 1065 ** adjusted by the message class, the number of recipients, and the 1066 ** amount of time the message has been sitting around. This number 1067 ** is used to order the queue. Higher values mean LOWER priority. 1068 ** 1069 ** Each priority class point is worth WkClassFact priority points; 1070 ** each recipient is worth WkRecipFact priority points. Each time 1071 ** we reprocess a message the priority is adjusted by WkTimeFact. 1072 ** WkTimeFact should normally decrease the priority so that jobs 1073 ** that have historically failed will be run later; thanks go to 1074 ** Jay Lepreau at Utah for pointing out the error in my thinking. 1075 ** 1076 ** The "class" is this number, unadjusted by the age or size of 1077 ** this message. Classes with negative representations will have 1078 ** error messages thrown away if they are not local. 1079 */ 1080 1081 struct priority 1082 { 1083 char *pri_name; /* external name of priority */ 1084 int pri_val; /* internal value for same */ 1085 }; 1086 1087 EXTERN int NumPriorities; /* pointer into Priorities */ 1088 EXTERN struct priority Priorities[MAXPRIORITIES]; 1089 1090 /* 1091 ** Rewrite rules. 1092 */ 1093 1094 struct rewrite 1095 { 1096 char **r_lhs; /* pattern match */ 1097 char **r_rhs; /* substitution value */ 1098 struct rewrite *r_next;/* next in chain */ 1099 int r_line; /* rule line in sendmail.cf */ 1100 }; 1101 1102 /* 1103 ** Special characters in rewriting rules. 1104 ** These are used internally only. 1105 ** The COND* rules are actually used in macros rather than in 1106 ** rewriting rules, but are given here because they 1107 ** cannot conflict. 1108 */ 1109 1110 /* "out of band" indicator */ 1111 /* sm/sendmail.h #define METAQUOTE ((unsigned char)0377) quotes the next octet */ 1112 1113 /* left hand side items */ 1114 #define MATCHZANY ((unsigned char)0220) /* match zero or more tokens */ 1115 #define MATCHANY ((unsigned char)0221) /* match one or more tokens */ 1116 #define MATCHONE ((unsigned char)0222) /* match exactly one token */ 1117 #define MATCHCLASS ((unsigned char)0223) /* match one token in a class */ 1118 #define MATCHNCLASS ((unsigned char)0224) /* match tokens not in class */ 1119 1120 /* right hand side items */ 1121 #define MATCHREPL ((unsigned char)0225) /* RHS replacement for above */ 1122 #define CANONNET ((unsigned char)0226) /* canonical net, next token */ 1123 #define CANONHOST ((unsigned char)0227) /* canonical host, next token */ 1124 #define CANONUSER ((unsigned char)0230) /* canonical user, next N tokens */ 1125 #define CALLSUBR ((unsigned char)0231) /* call another rewriting set */ 1126 1127 /* conditionals in macros (anywhere) */ 1128 #define CONDIF ((unsigned char)0232) /* conditional if-then */ 1129 #define CONDELSE ((unsigned char)0233) /* conditional else */ 1130 #define CONDFI ((unsigned char)0234) /* conditional fi */ 1131 1132 /* bracket characters for RHS host name lookup */ 1133 #define HOSTBEGIN ((unsigned char)0235) /* hostname lookup begin */ 1134 #define HOSTEND ((unsigned char)0236) /* hostname lookup end */ 1135 1136 /* bracket characters for RHS generalized lookup */ 1137 #define LOOKUPBEGIN ((unsigned char)0205) /* generalized lookup begin */ 1138 #define LOOKUPEND ((unsigned char)0206) /* generalized lookup end */ 1139 1140 /* macro substitution characters (anywhere) */ 1141 #define MACROEXPAND ((unsigned char)0201) /* macro expansion */ 1142 #define MACRODEXPAND ((unsigned char)0202) /* deferred macro expansion */ 1143 1144 /* to make the code clearer */ 1145 #define MATCHZERO CANONHOST 1146 1147 #define MAXMATCH 9 /* max params per rewrite */ 1148 #define MAX_MAP_ARGS 10 /* max arguments for map */ 1149 1150 /* external <==> internal mapping table */ 1151 struct metamac 1152 { 1153 char metaname; /* external code (after $) */ 1154 unsigned char metaval; /* internal code (as above) */ 1155 }; 1156 1157 /* values for macros with external names only */ 1158 #define MID_OPMODE 0202 /* operation mode */ 1159 1160 /* functions */ 1161 #if SM_HEAP_CHECK 1162 extern void 1163 macdefine_tagged __P(( 1164 MACROS_T *_mac, 1165 ARGCLASS_T _vclass, 1166 int _id, 1167 char *_value, 1168 char *_file, 1169 int _line, 1170 int _group)); 1171 # define macdefine(mac,c,id,v) \ 1172 macdefine_tagged(mac,c,id,v,__FILE__,__LINE__,sm_heap_group()) 1173 #else /* SM_HEAP_CHECK */ 1174 extern void 1175 macdefine __P(( 1176 MACROS_T *_mac, 1177 ARGCLASS_T _vclass, 1178 int _id, 1179 char *_value)); 1180 # define macdefine_tagged(mac,c,id,v,file,line,grp) macdefine(mac,c,id,v) 1181 #endif /* SM_HEAP_CHECK */ 1182 extern void macset __P((MACROS_T *, int, char *)); 1183 #define macget(mac, i) (mac)->mac_table[i] 1184 extern void expand __P((char *, char *, size_t, ENVELOPE *)); 1185 extern int macid_parse __P((char *, char **)); 1186 #define macid(name) macid_parse(name, NULL) 1187 extern char *macname __P((int)); 1188 extern char *macvalue __P((int, ENVELOPE *)); 1189 extern int rscheck __P((char *, char *, char *, ENVELOPE *, int, int, char *, char *, ADDRESS *, char **)); 1190 extern int rscap __P((char *, char *, char *, ENVELOPE *, char ***, char *, int)); 1191 extern void setclass __P((int, char *)); 1192 extern int strtorwset __P((char *, char **, int)); 1193 extern char *translate_dollars __P((char *, char *, int *)); 1194 extern bool wordinclass __P((char *, int)); 1195 1196 /* 1197 ** Name canonification short circuit. 1198 ** 1199 ** If the name server for a host is down, the process of trying to 1200 ** canonify the name can hang. This is similar to (but alas, not 1201 ** identical to) looking up the name for delivery. This stab type 1202 ** caches the result of the name server lookup so we don't hang 1203 ** multiple times. 1204 */ 1205 1206 #define NAMECANON struct _namecanon 1207 1208 NAMECANON 1209 { 1210 short nc_errno; /* cached errno */ 1211 short nc_herrno; /* cached h_errno */ 1212 short nc_stat; /* cached exit status code */ 1213 short nc_flags; /* flag bits */ 1214 char *nc_cname; /* the canonical name */ 1215 time_t nc_exp; /* entry expires at */ 1216 }; 1217 1218 /* values for nc_flags */ 1219 #define NCF_VALID 0x0001 /* entry valid */ 1220 1221 /* hostsignature structure */ 1222 1223 struct hostsig_t 1224 { 1225 char *hs_sig; /* hostsignature */ 1226 time_t hs_exp; /* entry expires at */ 1227 }; 1228 1229 typedef struct hostsig_t HOSTSIG_T; 1230 1231 /* 1232 ** The standard udp packet size PACKETSZ (512) is not sufficient for some 1233 ** nameserver answers containing very many resource records. The resolver 1234 ** may switch to tcp and retry if it detects udp packet overflow. 1235 ** Also note that the resolver routines res_query and res_search return 1236 ** the size of the *un*truncated answer in case the supplied answer buffer 1237 ** it not big enough to accommodate the entire answer. 1238 */ 1239 1240 # ifndef MAXPACKET 1241 # define MAXPACKET 8192 /* max packet size used internally by BIND */ 1242 # endif /* ! MAXPACKET */ 1243 1244 /* 1245 ** The resolver functions res_{send,query,querydomain} expect the 1246 ** answer buffer to be aligned, but some versions of gcc4 reverse 1247 ** 25 years of history and no longer align char buffers on the 1248 ** stack, resulting in crashes on strict-alignment platforms. Use 1249 ** this union when putting the buffer on the stack to force the 1250 ** alignment, then cast to (HEADER *) or (unsigned char *) as needed. 1251 */ 1252 typedef union 1253 { 1254 HEADER qb1; 1255 unsigned char qb2[MAXPACKET]; 1256 } querybuf; 1257 1258 /* functions */ 1259 extern bool getcanonname __P((char *, int, bool, int *)); 1260 extern int getmxrr __P((char *, char **, unsigned short *, bool, int *, bool, int *)); 1261 extern char *hostsignature __P((MAILER *, char *)); 1262 extern int getfallbackmxrr __P((char *)); 1263 1264 /* 1265 ** Mapping functions 1266 ** 1267 ** These allow arbitrary mappings in the config file. The idea 1268 ** (albeit not the implementation) comes from IDA sendmail. 1269 */ 1270 1271 #define MAPCLASS struct _mapclass 1272 #define MAP struct _map 1273 #define MAXMAPACTIONS 5 /* size of map_actions array */ 1274 1275 1276 /* 1277 ** An actual map. 1278 */ 1279 1280 MAP 1281 { 1282 MAPCLASS *map_class; /* the class of this map */ 1283 MAPCLASS *map_orgclass; /* the original class of this map */ 1284 char *map_mname; /* name of this map */ 1285 long map_mflags; /* flags, see below */ 1286 char *map_file; /* the (nominal) filename */ 1287 ARBPTR_T map_db1; /* the open database ptr */ 1288 ARBPTR_T map_db2; /* an "extra" database pointer */ 1289 char *map_keycolnm; /* key column name */ 1290 char *map_valcolnm; /* value column name */ 1291 unsigned char map_keycolno; /* key column number */ 1292 unsigned char map_valcolno; /* value column number */ 1293 char map_coldelim; /* column delimiter */ 1294 char map_spacesub; /* spacesub */ 1295 char *map_app; /* to append to successful matches */ 1296 char *map_tapp; /* to append to "tempfail" matches */ 1297 char *map_domain; /* the (nominal) NIS domain */ 1298 char *map_rebuild; /* program to run to do auto-rebuild */ 1299 time_t map_mtime; /* last database modification time */ 1300 time_t map_timeout; /* timeout for map accesses */ 1301 int map_retry; /* # of retries for map accesses */ 1302 pid_t map_pid; /* PID of process which opened map */ 1303 int map_lockfd; /* auxiliary lock file descriptor */ 1304 short map_specificity; /* specificity of aliases */ 1305 MAP *map_stack[MAXMAPSTACK]; /* list for stacked maps */ 1306 short map_return[MAXMAPACTIONS]; /* return bitmaps for stacked maps */ 1307 }; 1308 1309 1310 /* bit values for map_mflags */ 1311 #define MF_VALID 0x00000001 /* this entry is valid */ 1312 #define MF_INCLNULL 0x00000002 /* include null byte in key */ 1313 #define MF_OPTIONAL 0x00000004 /* don't complain if map not found */ 1314 #define MF_NOFOLDCASE 0x00000008 /* don't fold case in keys */ 1315 #define MF_MATCHONLY 0x00000010 /* don't use the map value */ 1316 #define MF_OPEN 0x00000020 /* this entry is open */ 1317 #define MF_WRITABLE 0x00000040 /* open for writing */ 1318 #define MF_ALIAS 0x00000080 /* this is an alias file */ 1319 #define MF_TRY0NULL 0x00000100 /* try with no null byte */ 1320 #define MF_TRY1NULL 0x00000200 /* try with the null byte */ 1321 #define MF_LOCKED 0x00000400 /* this map is currently locked */ 1322 #define MF_ALIASWAIT 0x00000800 /* alias map in aliaswait state */ 1323 #define MF_IMPL_HASH 0x00001000 /* implicit: underlying hash database */ 1324 #define MF_IMPL_NDBM 0x00002000 /* implicit: underlying NDBM database */ 1325 /* 0x00004000 */ 1326 #define MF_APPEND 0x00008000 /* append new entry on rebuild */ 1327 #define MF_KEEPQUOTES 0x00010000 /* don't dequote key before lookup */ 1328 #define MF_NODEFER 0x00020000 /* don't defer if map lookup fails */ 1329 #define MF_REGEX_NOT 0x00040000 /* regular expression negation */ 1330 #define MF_DEFER 0x00080000 /* don't lookup map in defer mode */ 1331 #define MF_SINGLEMATCH 0x00100000 /* successful only if match one key */ 1332 #define MF_SINGLEDN 0x00200000 /* only one match, but multi values */ 1333 #define MF_FILECLASS 0x00400000 /* this is a file class map */ 1334 #define MF_OPENBOGUS 0x00800000 /* open failed, don't call map_close */ 1335 #define MF_CLOSING 0x01000000 /* map is being closed */ 1336 1337 #define DYNOPENMAP(map) \ 1338 do \ 1339 { \ 1340 if (!bitset(MF_OPEN, (map)->map_mflags)) \ 1341 { \ 1342 if (!openmap(map)) \ 1343 return NULL; \ 1344 } \ 1345 } while (0) 1346 1347 1348 /* indices for map_actions */ 1349 #define MA_NOTFOUND 0 /* member map returned "not found" */ 1350 #define MA_UNAVAIL 1 /* member map is not available */ 1351 #define MA_TRYAGAIN 2 /* member map returns temp failure */ 1352 1353 /* 1354 ** The class of a map -- essentially the functions to call 1355 */ 1356 1357 MAPCLASS 1358 { 1359 char *map_cname; /* name of this map class */ 1360 char *map_ext; /* extension for database file */ 1361 short map_cflags; /* flag bits, see below */ 1362 bool (*map_parse)__P((MAP *, char *)); 1363 /* argument parsing function */ 1364 char *(*map_lookup)__P((MAP *, char *, char **, int *)); 1365 /* lookup function */ 1366 void (*map_store)__P((MAP *, char *, char *)); 1367 /* store function */ 1368 bool (*map_open)__P((MAP *, int)); 1369 /* open function */ 1370 void (*map_close)__P((MAP *)); 1371 /* close function */ 1372 }; 1373 1374 /* bit values for map_cflags */ 1375 #define MCF_ALIASOK 0x0001 /* can be used for aliases */ 1376 #define MCF_ALIASONLY 0x0002 /* usable only for aliases */ 1377 #define MCF_REBUILDABLE 0x0004 /* can rebuild alias files */ 1378 #define MCF_OPTFILE 0x0008 /* file name is optional */ 1379 #define MCF_NOTPERSIST 0x0010 /* don't keep map open all the time */ 1380 1381 /* functions */ 1382 extern void closemaps __P((bool)); 1383 extern bool impl_map_open __P((MAP *, int)); 1384 extern void initmaps __P((void)); 1385 extern MAP *makemapentry __P((char *)); 1386 extern void maplocaluser __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 1387 extern char *map_rewrite __P((MAP *, const char *, size_t, char **)); 1388 #if NETINFO 1389 extern char *ni_propval __P((char *, char *, char *, char *, int)); 1390 #endif /* NETINFO */ 1391 extern bool openmap __P((MAP *)); 1392 extern int udbexpand __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 1393 #if USERDB 1394 extern void _udbx_close __P((void)); 1395 extern char *udbsender __P((char *, SM_RPOOL_T *)); 1396 #endif /* USERDB */ 1397 1398 /* 1399 ** LDAP related items 1400 */ 1401 #if LDAPMAP 1402 /* struct defining LDAP Auth Methods */ 1403 struct lamvalues 1404 { 1405 char *lam_name; /* name of LDAP auth method */ 1406 int lam_code; /* numeric code */ 1407 }; 1408 1409 /* struct defining LDAP Alias Dereferencing */ 1410 struct ladvalues 1411 { 1412 char *lad_name; /* name of LDAP alias dereferencing method */ 1413 int lad_code; /* numeric code */ 1414 }; 1415 1416 /* struct defining LDAP Search Scope */ 1417 struct lssvalues 1418 { 1419 char *lss_name; /* name of LDAP search scope */ 1420 int lss_code; /* numeric code */ 1421 }; 1422 1423 /* functions */ 1424 extern bool ldapmap_parseargs __P((MAP *, char *)); 1425 extern void ldapmap_set_defaults __P((char *)); 1426 #endif /* LDAPMAP */ 1427 1428 /* 1429 ** PH related items 1430 */ 1431 1432 #if PH_MAP 1433 1434 # include <phclient.h> 1435 1436 struct ph_map_struct 1437 { 1438 char *ph_servers; /* list of ph servers */ 1439 char *ph_field_list; /* list of fields to search for match */ 1440 PH *ph; /* PH server handle */ 1441 int ph_fastclose; /* send "quit" command on close */ 1442 time_t ph_timeout; /* timeout interval */ 1443 }; 1444 typedef struct ph_map_struct PH_MAP_STRUCT; 1445 1446 #endif /* PH_MAP */ 1447 1448 /* 1449 ** Regular UNIX sockaddrs are too small to handle ISO addresses, so 1450 ** we are forced to declare a supertype here. 1451 */ 1452 1453 #if NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 1454 union bigsockaddr 1455 { 1456 struct sockaddr sa; /* general version */ 1457 # if NETUNIX 1458 struct sockaddr_un sunix; /* UNIX family */ 1459 # endif /* NETUNIX */ 1460 # if NETINET 1461 struct sockaddr_in sin; /* INET family */ 1462 # endif /* NETINET */ 1463 # if NETINET6 1464 struct sockaddr_in6 sin6; /* INET/IPv6 */ 1465 # endif /* NETINET6 */ 1466 # if NETISO 1467 struct sockaddr_iso siso; /* ISO family */ 1468 # endif /* NETISO */ 1469 # if NETNS 1470 struct sockaddr_ns sns; /* XNS family */ 1471 # endif /* NETNS */ 1472 # if NETX25 1473 struct sockaddr_x25 sx25; /* X.25 family */ 1474 # endif /* NETX25 */ 1475 }; 1476 1477 # define SOCKADDR union bigsockaddr 1478 1479 /* functions */ 1480 extern char *anynet_ntoa __P((SOCKADDR *)); 1481 # if NETINET6 1482 extern char *anynet_ntop __P((struct in6_addr *, char *, size_t)); 1483 extern int anynet_pton __P((int, const char *, void *)); 1484 # endif /* NETINET6 */ 1485 extern char *hostnamebyanyaddr __P((SOCKADDR *)); 1486 extern char *validate_connection __P((SOCKADDR *, char *, ENVELOPE *)); 1487 # if SASL >= 20000 1488 extern bool iptostring __P((SOCKADDR *, SOCKADDR_LEN_T, char *, unsigned)); 1489 # endif /* SASL >= 20000 */ 1490 1491 #endif /* NETINET || NETINET6 || NETUNIX || NETISO || NETNS || NETX25 */ 1492 1493 /* 1494 ** Process List (proclist) 1495 */ 1496 1497 #define NO_PID ((pid_t) 0) 1498 #ifndef PROC_LIST_SEG 1499 # define PROC_LIST_SEG 32 /* number of pids to alloc at a time */ 1500 #endif /* ! PROC_LIST_SEG */ 1501 1502 /* process types */ 1503 #define PROC_NONE 0 1504 #define PROC_DAEMON 1 1505 #define PROC_DAEMON_CHILD 2 1506 #define PROC_QUEUE 3 1507 #define PROC_QUEUE_CHILD 3 1508 #define PROC_CONTROL 4 1509 #define PROC_CONTROL_CHILD 5 1510 1511 /* functions */ 1512 extern void proc_list_add __P((pid_t, char *, int, int, int, SOCKADDR *)); 1513 extern void proc_list_clear __P((void)); 1514 extern void proc_list_display __P((SM_FILE_T *, char *)); 1515 extern void proc_list_drop __P((pid_t, int, int *)); 1516 extern void proc_list_probe __P((void)); 1517 extern void proc_list_set __P((pid_t, char *)); 1518 extern void proc_list_signal __P((int, int)); 1519 1520 /* 1521 ** Symbol table definitions 1522 */ 1523 1524 struct symtab 1525 { 1526 char *s_name; /* name to be entered */ 1527 short s_symtype; /* general type (see below) */ 1528 struct symtab *s_next; /* pointer to next in chain */ 1529 union 1530 { 1531 BITMAP256 sv_class; /* bit-map of word classes */ 1532 MAILER *sv_mailer; /* pointer to mailer */ 1533 char *sv_alias; /* alias */ 1534 MAPCLASS sv_mapclass; /* mapping function class */ 1535 MAP sv_map; /* mapping function */ 1536 HOSTSIG_T sv_hostsig; /* host signature */ 1537 MCI sv_mci; /* mailer connection info */ 1538 NAMECANON sv_namecanon; /* canonical name cache */ 1539 int sv_macro; /* macro name => id mapping */ 1540 int sv_ruleset; /* ruleset index */ 1541 struct hdrinfo sv_header; /* header metainfo */ 1542 char *sv_service[MAXMAPSTACK]; /* service switch */ 1543 #if LDAPMAP 1544 MAP *sv_lmap; /* Maps for LDAP connection */ 1545 #endif /* LDAPMAP */ 1546 #if SOCKETMAP 1547 MAP *sv_socketmap; /* Maps for SOCKET connection */ 1548 #endif /* SOCKETMAP */ 1549 #if MILTER 1550 struct milter *sv_milter; /* milter filter name */ 1551 #endif /* MILTER */ 1552 QUEUEGRP *sv_queue; /* pointer to queue */ 1553 } s_value; 1554 }; 1555 1556 typedef struct symtab STAB; 1557 1558 /* symbol types */ 1559 #define ST_UNDEF 0 /* undefined type */ 1560 #define ST_CLASS 1 /* class map */ 1561 /* #define ST_unused 2 UNUSED */ 1562 #define ST_MAILER 3 /* a mailer header */ 1563 #define ST_ALIAS 4 /* an alias */ 1564 #define ST_MAPCLASS 5 /* mapping function class */ 1565 #define ST_MAP 6 /* mapping function */ 1566 #define ST_HOSTSIG 7 /* host signature */ 1567 #define ST_NAMECANON 8 /* cached canonical name */ 1568 #define ST_MACRO 9 /* macro name to id mapping */ 1569 #define ST_RULESET 10 /* ruleset index */ 1570 #define ST_SERVICE 11 /* service switch entry */ 1571 #define ST_HEADER 12 /* special header flags */ 1572 #if LDAPMAP 1573 # define ST_LMAP 13 /* List head of maps for LDAP connection */ 1574 #endif /* LDAPMAP */ 1575 #if MILTER 1576 # define ST_MILTER 14 /* milter filter */ 1577 #endif /* MILTER */ 1578 #define ST_QUEUE 15 /* a queue entry */ 1579 1580 #if SOCKETMAP 1581 # define ST_SOCKETMAP 16 /* List head of maps for SOCKET connection */ 1582 #endif /* SOCKETMAP */ 1583 1584 /* This entry must be last */ 1585 #define ST_MCI 17 /* mailer connection info (offset) */ 1586 1587 #define s_class s_value.sv_class 1588 #define s_mailer s_value.sv_mailer 1589 #define s_alias s_value.sv_alias 1590 #define s_mci s_value.sv_mci 1591 #define s_mapclass s_value.sv_mapclass 1592 #define s_hostsig s_value.sv_hostsig 1593 #define s_map s_value.sv_map 1594 #define s_namecanon s_value.sv_namecanon 1595 #define s_macro s_value.sv_macro 1596 #define s_ruleset s_value.sv_ruleset 1597 #define s_service s_value.sv_service 1598 #define s_header s_value.sv_header 1599 #if LDAPMAP 1600 # define s_lmap s_value.sv_lmap 1601 #endif /* LDAPMAP */ 1602 #if SOCKETMAP 1603 # define s_socketmap s_value.sv_socketmap 1604 #endif /* SOCKETMAP */ 1605 #if MILTER 1606 # define s_milter s_value.sv_milter 1607 #endif /* MILTER */ 1608 #define s_quegrp s_value.sv_queue 1609 1610 /* opcodes to stab */ 1611 #define ST_FIND 0 /* find entry */ 1612 #define ST_ENTER 1 /* enter if not there */ 1613 1614 /* functions */ 1615 extern STAB *stab __P((char *, int, int)); 1616 extern void stabapply __P((void (*)(STAB *, int), int)); 1617 1618 /* 1619 ** Operation, send, error, and MIME modes 1620 ** 1621 ** The operation mode describes the basic operation of sendmail. 1622 ** This can be set from the command line, and is "send mail" by 1623 ** default. 1624 ** 1625 ** The send mode tells how to send mail. It can be set in the 1626 ** configuration file. Its setting determines how quickly the 1627 ** mail will be delivered versus the load on your system. If the 1628 ** -v (verbose) flag is given, it will be forced to SM_DELIVER 1629 ** mode. 1630 ** 1631 ** The error mode tells how to return errors. 1632 */ 1633 1634 #define MD_DELIVER 'm' /* be a mail sender */ 1635 #define MD_SMTP 's' /* run SMTP on standard input */ 1636 #define MD_ARPAFTP 'a' /* obsolete ARPANET mode (Grey Book) */ 1637 #define MD_DAEMON 'd' /* run as a daemon */ 1638 #define MD_FGDAEMON 'D' /* run daemon in foreground */ 1639 #define MD_LOCAL 'l' /* like daemon, but localhost only */ 1640 #define MD_VERIFY 'v' /* verify: don't collect or deliver */ 1641 #define MD_TEST 't' /* test mode: resolve addrs only */ 1642 #define MD_INITALIAS 'i' /* initialize alias database */ 1643 #define MD_PRINT 'p' /* print the queue */ 1644 #define MD_PRINTNQE 'P' /* print number of entries in queue */ 1645 #define MD_FREEZE 'z' /* freeze the configuration file */ 1646 #define MD_HOSTSTAT 'h' /* print persistent host stat info */ 1647 #define MD_PURGESTAT 'H' /* purge persistent host stat info */ 1648 #define MD_QUEUERUN 'q' /* queue run */ 1649 #define MD_CHECKCONFIG 'C' /* check configuration file */ 1650 1651 #if _FFR_LOCAL_DAEMON 1652 EXTERN bool LocalDaemon; 1653 # if NETINET6 1654 EXTERN bool V6LoopbackAddrFound; /* found an IPv6 loopback address */ 1655 # define SETV6LOOPBACKADDRFOUND(sa) \ 1656 do \ 1657 { \ 1658 if (isloopback(sa)) \ 1659 V6LoopbackAddrFound = true; \ 1660 } while (0) 1661 # endif /* NETINET6 */ 1662 #else /* _FFR_LOCAL_DAEMON */ 1663 # define LocalDaemon false 1664 # define V6LoopbackAddrFound false 1665 # define SETV6LOOPBACKADDRFOUND(sa) 1666 #endif /* _FFR_LOCAL_DAEMON */ 1667 1668 /* Note: see also include/sendmail/pathnames.h: GET_CLIENT_CF */ 1669 1670 /* values for e_sendmode -- send modes */ 1671 #define SM_DELIVER 'i' /* interactive delivery */ 1672 #if _FFR_PROXY 1673 #define SM_PROXY_REQ 's' /* synchronous mode requested */ 1674 #define SM_PROXY 'S' /* synchronous mode activated */ 1675 #endif /* _FFR_PROXY */ 1676 #define SM_FORK 'b' /* deliver in background */ 1677 #if _FFR_DM_ONE 1678 #define SM_DM_ONE 'o' /* deliver first TA in background, then queue */ 1679 #endif /* _FFR_DM_ONE */ 1680 #define SM_QUEUE 'q' /* queue, don't deliver */ 1681 #define SM_DEFER 'd' /* defer map lookups as well as queue */ 1682 #define SM_VERIFY 'v' /* verify only (used internally) */ 1683 #define DM_NOTSET (-1) /* DeliveryMode (per daemon) option not set */ 1684 #if _FFR_PROXY 1685 # define SM_IS_INTERACTIVE(m) ((m) == SM_DELIVER || (m) == SM_PROXY_REQ || (m) == SM_PROXY) 1686 #else /* _FFR_PROXY */ 1687 # define SM_IS_INTERACTIVE(m) ((m) == SM_DELIVER) 1688 #endif /* _FFR_PROXY */ 1689 1690 #define WILL_BE_QUEUED(m) ((m) == SM_QUEUE || (m) == SM_DEFER) 1691 1692 /* used only as a parameter to sendall */ 1693 #define SM_DEFAULT '\0' /* unspecified, use SendMode */ 1694 1695 /* functions */ 1696 extern void set_delivery_mode __P((int, ENVELOPE *)); 1697 1698 /* values for e_errormode -- error handling modes */ 1699 #define EM_PRINT 'p' /* print errors */ 1700 #define EM_MAIL 'm' /* mail back errors */ 1701 #define EM_WRITE 'w' /* write back errors */ 1702 #define EM_BERKNET 'e' /* special berknet processing */ 1703 #define EM_QUIET 'q' /* don't print messages (stat only) */ 1704 1705 1706 /* bit values for MimeMode */ 1707 #define MM_CVTMIME 0x0001 /* convert 8 to 7 bit MIME */ 1708 #define MM_PASS8BIT 0x0002 /* just send 8 bit data blind */ 1709 #define MM_MIME8BIT 0x0004 /* convert 8-bit data to MIME */ 1710 1711 1712 /* how to handle messages without any recipient addresses */ 1713 #define NRA_NO_ACTION 0 /* just leave it as is */ 1714 #define NRA_ADD_TO 1 /* add To: header */ 1715 #define NRA_ADD_APPARENTLY_TO 2 /* add Apparently-To: header */ 1716 #define NRA_ADD_BCC 3 /* add empty Bcc: header */ 1717 #define NRA_ADD_TO_UNDISCLOSED 4 /* add To: undisclosed:; header */ 1718 1719 1720 /* flags to putxline */ 1721 #define PXLF_NOTHINGSPECIAL 0 /* no special mapping */ 1722 #define PXLF_MAPFROM 0x0001 /* map From_ to >From_ */ 1723 #define PXLF_STRIP8BIT 0x0002 /* strip 8th bit */ 1724 #define PXLF_HEADER 0x0004 /* map newlines in headers */ 1725 #define PXLF_NOADDEOL 0x0008 /* if EOL not present, don't add one */ 1726 #define PXLF_STRIPMQUOTE 0x0010 /* strip METAQUOTEs */ 1727 1728 /* 1729 ** Privacy flags 1730 ** These are bit values for the PrivacyFlags word. 1731 */ 1732 1733 #define PRIV_PUBLIC 0 /* what have I got to hide? */ 1734 #define PRIV_NEEDMAILHELO 0x00000001 /* insist on HELO for MAIL */ 1735 #define PRIV_NEEDEXPNHELO 0x00000002 /* insist on HELO for EXPN */ 1736 #define PRIV_NEEDVRFYHELO 0x00000004 /* insist on HELO for VRFY */ 1737 #define PRIV_NOEXPN 0x00000008 /* disallow EXPN command */ 1738 #define PRIV_NOVRFY 0x00000010 /* disallow VRFY command */ 1739 #define PRIV_AUTHWARNINGS 0x00000020 /* flag possible auth probs */ 1740 #define PRIV_NOVERB 0x00000040 /* disallow VERB command */ 1741 #define PRIV_RESTRICTMAILQ 0x00010000 /* restrict mailq command */ 1742 #define PRIV_RESTRICTQRUN 0x00020000 /* restrict queue run */ 1743 #define PRIV_RESTRICTEXPAND 0x00040000 /* restrict alias/forward expansion */ 1744 #define PRIV_NOETRN 0x00080000 /* disallow ETRN command */ 1745 #define PRIV_NOBODYRETN 0x00100000 /* do not return bodies on bounces */ 1746 #define PRIV_NORECEIPTS 0x00200000 /* disallow return receipts */ 1747 #define PRIV_NOACTUALRECIPIENT 0x00400000 /* no X-Actual-Recipient in DSNs */ 1748 1749 /* don't give no info, anyway, anyhow (in the main SMTP transaction) */ 1750 #define PRIV_GOAWAY 0x0000ffff 1751 1752 /* struct defining such things */ 1753 struct prival 1754 { 1755 char *pv_name; /* name of privacy flag */ 1756 unsigned long pv_flag; /* numeric level */ 1757 }; 1758 1759 EXTERN unsigned long PrivacyFlags; /* privacy flags */ 1760 1761 1762 /* 1763 ** Flags passed to remotename, parseaddr, allocaddr, and buildaddr. 1764 */ 1765 1766 #define RF_SENDERADDR 0x001 /* this is a sender address */ 1767 #define RF_HEADERADDR 0x002 /* this is a header address */ 1768 #define RF_CANONICAL 0x004 /* strip comment information */ 1769 #define RF_ADDDOMAIN 0x008 /* OK to do domain extension */ 1770 #define RF_COPYPARSE 0x010 /* copy parsed user & host */ 1771 #define RF_COPYPADDR 0x020 /* copy print address */ 1772 #define RF_COPYALL (RF_COPYPARSE|RF_COPYPADDR) 1773 #define RF_COPYNONE 0 1774 #define RF_RM_ADDR 0x040 /* address to be removed */ 1775 1776 /* 1777 ** Flags passed to rscheck 1778 */ 1779 1780 #define RSF_RMCOMM 0x0001 /* strip comments */ 1781 #define RSF_UNSTRUCTURED 0x0002 /* unstructured, ignore syntax errors */ 1782 #define RSF_COUNT 0x0004 /* count rejections (statistics)? */ 1783 #define RSF_ADDR 0x0008 /* reassemble address */ 1784 #define RSF_STRING 0x0010 /* reassemble address as string */ 1785 1786 /* 1787 ** Flags passed to mime8to7 and putheader. 1788 */ 1789 1790 #define M87F_OUTER 0 /* outer context */ 1791 #define M87F_NO8BIT 0x0001 /* can't have 8-bit in this section */ 1792 #define M87F_DIGEST 0x0002 /* processing multipart/digest */ 1793 #define M87F_NO8TO7 0x0004 /* don't do 8->7 bit conversions */ 1794 1795 /* functions */ 1796 extern bool mime7to8 __P((MCI *, HDR *, ENVELOPE *)); 1797 extern int mime8to7 __P((MCI *, HDR *, ENVELOPE *, char **, int, int)); 1798 1799 /* 1800 ** Flags passed to returntosender. 1801 */ 1802 1803 #define RTSF_NO_BODY 0 /* send headers only */ 1804 #define RTSF_SEND_BODY 0x0001 /* include body of message in return */ 1805 #define RTSF_PM_BOUNCE 0x0002 /* this is a postmaster bounce */ 1806 1807 /* functions */ 1808 extern int returntosender __P((char *, ADDRESS *, int, ENVELOPE *)); 1809 1810 /* 1811 ** Mail Filters (milter) 1812 */ 1813 1814 /* 1815 ** 32-bit type used by milter 1816 ** (needed by libmilter even if MILTER isn't defined) 1817 */ 1818 1819 typedef SM_INT32 mi_int32; 1820 1821 #if MILTER 1822 # define SMFTO_WRITE 0 /* Timeout for sending information */ 1823 # define SMFTO_READ 1 /* Timeout waiting for a response */ 1824 # define SMFTO_EOM 2 /* Timeout for ACK/NAK to EOM */ 1825 # define SMFTO_CONNECT 3 /* Timeout for connect() */ 1826 1827 # define SMFTO_NUM_TO 4 /* Total number of timeouts */ 1828 1829 struct milter 1830 { 1831 char *mf_name; /* filter name */ 1832 BITMAP256 mf_flags; /* MTA flags */ 1833 mi_int32 mf_fvers; /* filter version */ 1834 mi_int32 mf_fflags; /* filter flags */ 1835 mi_int32 mf_pflags; /* protocol flags */ 1836 char *mf_conn; /* connection info */ 1837 int mf_sock; /* connected socket */ 1838 char mf_state; /* state of filter */ 1839 char mf_lflags; /* "local" flags */ 1840 int mf_idx; /* milter number (index) */ 1841 time_t mf_timeout[SMFTO_NUM_TO]; /* timeouts */ 1842 #if _FFR_MILTER_CHECK 1843 /* for testing only */ 1844 mi_int32 mf_mta_prot_version; 1845 mi_int32 mf_mta_prot_flags; 1846 mi_int32 mf_mta_actions; 1847 #endif /* _FFR_MILTER_CHECK */ 1848 }; 1849 1850 #define MI_LFL_NONE 0x00000000 1851 #define MI_LFLAGS_SYM(st) (1 << (st)) /* has its own symlist for stage st */ 1852 1853 struct milters 1854 { 1855 mi_int32 mis_flags; /* filter flags */ 1856 }; 1857 typedef struct milters milters_T; 1858 1859 #define MIS_FL_NONE 0x00000000 /* no requirements... */ 1860 #define MIS_FL_DEL_RCPT 0x00000001 /* can delete rcpt */ 1861 #define MIS_FL_REJ_RCPT 0x00000002 /* can reject rcpt */ 1862 1863 1864 /* MTA flags */ 1865 # define SMF_REJECT 'R' /* Reject connection on filter fail */ 1866 # define SMF_TEMPFAIL 'T' /* tempfail connection on failure */ 1867 # define SMF_TEMPDROP '4' /* 421 connection on failure */ 1868 1869 EXTERN struct milter *InputFilters[MAXFILTERS]; 1870 EXTERN char *InputFilterList; 1871 EXTERN int MilterLogLevel; 1872 1873 /* functions */ 1874 extern void setup_daemon_milters __P((void)); 1875 #endif /* MILTER */ 1876 1877 /* 1878 ** Vendor codes 1879 ** 1880 ** Vendors can customize sendmail to add special behaviour, 1881 ** generally for back compatibility. Ideally, this should 1882 ** be set up in the .cf file using the "V" command. However, 1883 ** it's quite reasonable for some vendors to want the default 1884 ** be their old version; this can be set using 1885 ** -DVENDOR_DEFAULT=VENDOR_xxx 1886 ** in the Makefile. 1887 ** 1888 ** Vendors should apply to sendmail@sendmail.org for 1889 ** unique vendor codes. 1890 */ 1891 1892 #define VENDOR_BERKELEY 1 /* Berkeley-native configuration file */ 1893 #define VENDOR_SUN 2 /* Sun-native configuration file */ 1894 #define VENDOR_HP 3 /* Hewlett-Packard specific config syntax */ 1895 #define VENDOR_IBM 4 /* IBM specific config syntax */ 1896 #define VENDOR_SENDMAIL 5 /* Proofpoint, Inc. specific config syntax */ 1897 #define VENDOR_DEC 6 /* Compaq, DEC, Digital */ 1898 1899 /* prototypes for vendor-specific hook routines */ 1900 extern void vendor_daemon_setup __P((ENVELOPE *)); 1901 extern void vendor_set_uid __P((UID_T)); 1902 1903 1904 /* 1905 ** Terminal escape codes. 1906 ** 1907 ** To make debugging output clearer. 1908 */ 1909 1910 struct termescape 1911 { 1912 char *te_rv_on; /* turn reverse-video on */ 1913 char *te_under_on; /* turn underlining on */ 1914 char *te_normal; /* revert to normal output */ 1915 }; 1916 1917 /* 1918 ** Additional definitions 1919 */ 1920 1921 /* 1922 ** d_flags, see daemon.c 1923 ** general rule: lower case: required, upper case: No 1924 */ 1925 1926 #define D_AUTHREQ 'a' /* authentication required */ 1927 #define D_BINDIF 'b' /* use if_addr for outgoing connection */ 1928 #define D_CANONREQ 'c' /* canonification required (cf) */ 1929 #define D_IFNHELO 'h' /* use if name for HELO */ 1930 #define D_FQMAIL 'f' /* fq sender address required (cf) */ 1931 #define D_FQRCPT 'r' /* fq recipient address required (cf) */ 1932 #define D_SMTPS 's' /* SMTP over SSL (smtps) */ 1933 #define D_UNQUALOK 'u' /* unqualified address is ok (cf) */ 1934 #define D_NOAUTH 'A' /* no AUTH */ 1935 #define D_NOCANON 'C' /* no canonification (cf) */ 1936 #define D_NOETRN 'E' /* no ETRN (MSA) */ 1937 #define D_NOTLS 'S' /* don't use STARTTLS */ 1938 #define D_ETRNONLY ((char)0x01) /* allow only ETRN (disk low) */ 1939 #define D_OPTIONAL 'O' /* optional socket */ 1940 #define D_DISABLE ((char)0x02) /* optional socket disabled */ 1941 #define D_ISSET ((char)0x03) /* this client struct is set */ 1942 #if _FFR_XCNCT 1943 #define D_XCNCT ((char)0x04) /* X-Connect was used */ 1944 #define D_XCNCT_M ((char)0x05) /* X-Connect was used + "forged" */ 1945 #endif /* _FFR_XCNCT */ 1946 1947 #if STARTTLS 1948 /* 1949 ** TLS 1950 */ 1951 1952 /* what to do in the TLS initialization */ 1953 #define TLS_I_NONE 0x00000000 /* no requirements... */ 1954 #define TLS_I_CERT_EX 0x00000001 /* cert must exist */ 1955 #define TLS_I_CERT_UNR 0x00000002 /* cert must be g/o unreadable */ 1956 #define TLS_I_KEY_EX 0x00000004 /* key must exist */ 1957 #define TLS_I_KEY_UNR 0x00000008 /* key must be g/o unreadable */ 1958 #define TLS_I_CERTP_EX 0x00000010 /* CA cert path must exist */ 1959 #define TLS_I_CERTP_UNR 0x00000020 /* CA cert path must be g/o unreadable */ 1960 #define TLS_I_CERTF_EX 0x00000040 /* CA cert file must exist */ 1961 #define TLS_I_CERTF_UNR 0x00000080 /* CA cert file must be g/o unreadable */ 1962 #define TLS_I_RSA_TMP 0x00000100 /* RSA TMP must be generated */ 1963 #define TLS_I_USE_KEY 0x00000200 /* private key must usable */ 1964 #define TLS_I_USE_CERT 0x00000400 /* certificate must be usable */ 1965 #define TLS_I_VRFY_PATH 0x00000800 /* load verify path must succeed */ 1966 #define TLS_I_VRFY_LOC 0x00001000 /* load verify default must succeed */ 1967 #define TLS_I_CACHE 0x00002000 /* require cache */ 1968 #define TLS_I_TRY_DH 0x00004000 /* try DH certificate */ 1969 #define TLS_I_REQ_DH 0x00008000 /* require DH certificate */ 1970 #define TLS_I_DHPAR_EX 0x00010000 /* require DH parameters */ 1971 #define TLS_I_DHPAR_UNR 0x00020000 /* DH param. must be g/o unreadable */ 1972 #define TLS_I_DH512 0x00040000 /* generate 512bit DH param */ 1973 #define TLS_I_DH1024 0x00080000 /* generate 1024bit DH param */ 1974 #define TLS_I_DH2048 0x00100000 /* generate 2048bit DH param */ 1975 #define TLS_I_NO_VRFY 0x00200000 /* do not require authentication */ 1976 #define TLS_I_KEY_OUNR 0x00400000 /* Key must be other unreadable */ 1977 #define TLS_I_CRLF_EX 0x00800000 /* CRL file must exist */ 1978 #define TLS_I_CRLF_UNR 0x01000000 /* CRL file must be g/o unreadable */ 1979 #define TLS_I_DHFIXED 0x02000000 /* use fixed DH param */ 1980 1981 /* require server cert */ 1982 #define TLS_I_SRV_CERT (TLS_I_CERT_EX | TLS_I_KEY_EX | \ 1983 TLS_I_KEY_UNR | TLS_I_KEY_OUNR | \ 1984 TLS_I_CERTP_EX | TLS_I_CERTF_EX | \ 1985 TLS_I_USE_KEY | TLS_I_USE_CERT | TLS_I_CACHE) 1986 1987 /* server requirements */ 1988 #define TLS_I_SRV (TLS_I_SRV_CERT | TLS_I_RSA_TMP | TLS_I_VRFY_PATH | \ 1989 TLS_I_VRFY_LOC | TLS_I_TRY_DH | TLS_I_CACHE) 1990 1991 /* client requirements */ 1992 #define TLS_I_CLT (TLS_I_KEY_UNR | TLS_I_KEY_OUNR) 1993 1994 #define TLS_AUTH_OK 0 1995 #define TLS_AUTH_NO 1 1996 #define TLS_AUTH_FAIL (-1) 1997 1998 /* functions */ 1999 extern bool init_tls_library __P((bool _fipsmode)); 2000 extern bool inittls __P((SSL_CTX **, unsigned long, unsigned long, bool, char *, char *, char *, char *, char *)); 2001 extern bool initclttls __P((bool)); 2002 extern void setclttls __P((bool)); 2003 extern bool initsrvtls __P((bool)); 2004 extern int tls_get_info __P((SSL *, bool, char *, MACROS_T *, bool)); 2005 extern int endtls __P((SSL *, char *)); 2006 extern void tlslogerr __P((int, const char *)); 2007 2008 2009 EXTERN char *CACertPath; /* path to CA certificates (dir. with hashes) */ 2010 EXTERN char *CACertFile; /* file with CA certificate */ 2011 EXTERN char *CltCertFile; /* file with client certificate */ 2012 EXTERN char *CltKeyFile; /* file with client private key */ 2013 EXTERN char *CipherList; /* list of ciphers */ 2014 EXTERN char *CertFingerprintAlgorithm; /* name of fingerprint alg */ 2015 EXTERN const EVP_MD *EVP_digest; /* digest for cert fp */ 2016 EXTERN char *DHParams; /* file with DH parameters */ 2017 EXTERN char *RandFile; /* source of random data */ 2018 EXTERN char *SrvCertFile; /* file with server certificate */ 2019 EXTERN char *SrvKeyFile; /* file with server private key */ 2020 EXTERN char *CRLFile; /* file CRLs */ 2021 #if _FFR_CRLPATH 2022 EXTERN char *CRLPath; /* path to CRLs (dir. with hashes) */ 2023 #endif /* _FFR_CRLPATH */ 2024 EXTERN unsigned long TLS_Srv_Opts; /* TLS server options */ 2025 EXTERN unsigned long Srv_SSL_Options, Clt_SSL_Options; /* SSL options */ 2026 #endif /* STARTTLS */ 2027 2028 /* 2029 ** Queue related items 2030 */ 2031 2032 /* queue file names */ 2033 #define ANYQFL_LETTER '?' 2034 #define QUARQF_LETTER 'h' 2035 #define DATAFL_LETTER 'd' 2036 #define XSCRPT_LETTER 'x' 2037 #define NORMQF_LETTER 'q' 2038 #define NEWQFL_LETTER 't' 2039 2040 # define TEMPQF_LETTER 'T' 2041 # define LOSEQF_LETTER 'Q' 2042 2043 /* queue sort order */ 2044 #define QSO_BYPRIORITY 0 /* sort by message priority */ 2045 #define QSO_BYHOST 1 /* sort by first host name */ 2046 #define QSO_BYTIME 2 /* sort by submission time */ 2047 #define QSO_BYFILENAME 3 /* sort by file name only */ 2048 #define QSO_RANDOM 4 /* sort in random order */ 2049 #define QSO_BYMODTIME 5 /* sort by modification time */ 2050 #define QSO_NONE 6 /* do not sort */ 2051 #if _FFR_RHS 2052 # define QSO_BYSHUFFLE 7 /* sort by shuffled host name */ 2053 #endif /* _FFR_RHS */ 2054 2055 #define NOQGRP (-1) /* no queue group (yet) */ 2056 #define ENVQGRP (-2) /* use queue group of envelope */ 2057 #define NOAQGRP (-3) /* no queue group in addr (yet) */ 2058 #define ISVALIDQGRP(x) ((x) >= 0) /* valid queue group? */ 2059 #define NOQDIR (-1) /* no queue directory (yet) */ 2060 #define ENVQDIR (-2) /* use queue directory of envelope */ 2061 #define NOAQDIR (-3) /* no queue directory in addr (yet) */ 2062 #define ISVALIDQDIR(x) ((x) >= 0) /* valid queue directory? */ 2063 #define RS_QUEUEGROUP "queuegroup" /* ruleset for queue group selection */ 2064 2065 #define NOW ((time_t) (-1)) /* queue return: now */ 2066 2067 /* SuperSafe values */ 2068 #define SAFE_NO 0 /* no fsync(): don't use... */ 2069 #define SAFE_INTERACTIVE 1 /* limit fsync() in -odi */ 2070 #define SAFE_REALLY 2 /* always fsync() */ 2071 #define SAFE_REALLY_POSTMILTER 3 /* fsync() if milter says OK */ 2072 2073 /* QueueMode bits */ 2074 #define QM_NORMAL ' ' 2075 #define QM_QUARANTINE 'Q' 2076 #define QM_LOST 'L' 2077 2078 /* Queue Run Limitations */ 2079 struct queue_char 2080 { 2081 char *queue_match; /* string to match */ 2082 bool queue_negate; /* or not match, if set */ 2083 struct queue_char *queue_next; 2084 }; 2085 2086 /* run_work_group() flags */ 2087 #define RWG_NONE 0x0000 2088 #define RWG_FORK 0x0001 2089 #define RWG_VERBOSE 0x0002 2090 #define RWG_PERSISTENT 0x0004 2091 #define RWG_FORCE 0x0008 2092 #define RWG_RUNALL 0x0010 2093 2094 typedef struct queue_char QUEUE_CHAR; 2095 2096 EXTERN int volatile CurRunners; /* current number of runner children */ 2097 EXTERN int MaxQueueRun; /* maximum number of jobs in one queue run */ 2098 EXTERN int MaxQueueChildren; /* max # of forked queue children */ 2099 EXTERN int MaxRunnersPerQueue; /* max # proc's active in queue group */ 2100 EXTERN int NiceQueueRun; /* nice queue runs to this value */ 2101 EXTERN int NumQueue; /* number of queue groups */ 2102 EXTERN int QueueFileMode; /* mode on files in mail queue */ 2103 EXTERN int QueueMode; /* which queue items to act upon */ 2104 EXTERN int QueueSortOrder; /* queue sorting order algorithm */ 2105 EXTERN time_t MinQueueAge; /* min delivery interval */ 2106 EXTERN time_t MaxQueueAge; /* max delivery interval */ 2107 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 2108 EXTERN char *QueueDir; /* location of queue directory */ 2109 EXTERN QUEUE_CHAR *QueueLimitId; /* limit queue run to id */ 2110 EXTERN QUEUE_CHAR *QueueLimitQuarantine; /* limit queue run to quarantine reason */ 2111 EXTERN QUEUE_CHAR *QueueLimitRecipient; /* limit queue run to rcpt */ 2112 EXTERN QUEUE_CHAR *QueueLimitSender; /* limit queue run to sender */ 2113 EXTERN QUEUEGRP *Queue[MAXQUEUEGROUPS + 1]; /* queue groups */ 2114 #if _FFR_BOUNCE_QUEUE 2115 EXTERN int BounceQueue; 2116 #endif 2117 2118 /* functions */ 2119 extern void assign_queueid __P((ENVELOPE *)); 2120 extern ADDRESS *copyqueue __P((ADDRESS *, SM_RPOOL_T *)); 2121 extern void cleanup_queues __P((void)); 2122 extern bool doqueuerun __P((void)); 2123 extern void initsys __P((ENVELOPE *)); 2124 extern void loseqfile __P((ENVELOPE *, char *)); 2125 extern int name2qid __P((char *)); 2126 extern char *qid_printname __P((ENVELOPE *)); 2127 extern char *qid_printqueue __P((int, int)); 2128 extern void quarantine_queue __P((char *, int)); 2129 extern char *queuename __P((ENVELOPE *, int)); 2130 extern void queueup __P((ENVELOPE *, bool, bool)); 2131 extern bool runqueue __P((bool, bool, bool, bool)); 2132 extern bool run_work_group __P((int, int)); 2133 extern void set_def_queueval __P((QUEUEGRP *, bool)); 2134 extern void setup_queues __P((bool)); 2135 extern bool setnewqueue __P((ENVELOPE *)); 2136 extern bool shouldqueue __P((long, time_t)); 2137 extern void sync_queue_time __P((void)); 2138 extern void init_qid_alg __P((void)); 2139 extern int print_single_queue __P((int, int)); 2140 #if REQUIRES_DIR_FSYNC 2141 # define SYNC_DIR(path, panic) sync_dir(path, panic) 2142 extern void sync_dir __P((char *, bool)); 2143 #else /* REQUIRES_DIR_FSYNC */ 2144 # define SYNC_DIR(path, panic) ((void) 0) 2145 #endif /* REQUIRES_DIR_FSYNC */ 2146 2147 /* 2148 ** Timeouts 2149 ** 2150 ** Indicated values are the MINIMUM per RFC 1123 section 5.3.2. 2151 */ 2152 2153 EXTERN struct 2154 { 2155 /* RFC 1123-specified timeouts [minimum value] */ 2156 time_t to_initial; /* initial greeting timeout [5m] */ 2157 time_t to_mail; /* MAIL command [5m] */ 2158 time_t to_rcpt; /* RCPT command [5m] */ 2159 time_t to_datainit; /* DATA initiation [2m] */ 2160 time_t to_datablock; /* DATA block [3m] */ 2161 time_t to_datafinal; /* DATA completion [10m] */ 2162 time_t to_nextcommand; /* next command [5m] */ 2163 /* following timeouts are not mentioned in RFC 1123 */ 2164 time_t to_iconnect; /* initial connection timeout (first try) */ 2165 time_t to_connect; /* initial connection timeout (later tries) */ 2166 time_t to_aconnect; /* all connections timeout (MX and A records) */ 2167 time_t to_rset; /* RSET command */ 2168 time_t to_helo; /* HELO command */ 2169 time_t to_quit; /* QUIT command */ 2170 time_t to_miscshort; /* misc short commands (NOOP, VERB, etc) */ 2171 time_t to_ident; /* IDENT protocol requests */ 2172 time_t to_fileopen; /* opening :include: and .forward files */ 2173 time_t to_control; /* process a control socket command */ 2174 time_t to_lhlo; /* LMTP: LHLO command */ 2175 #if SASL 2176 time_t to_auth; /* AUTH dialogue [10m] */ 2177 #endif /* SASL */ 2178 #if STARTTLS 2179 time_t to_starttls; /* STARTTLS dialogue [10m] */ 2180 #endif /* STARTTLS */ 2181 /* following are per message */ 2182 time_t to_q_return[MAXTOCLASS]; /* queue return timeouts */ 2183 time_t to_q_warning[MAXTOCLASS]; /* queue warning timeouts */ 2184 time_t res_retrans[MAXRESTOTYPES]; /* resolver retransmit */ 2185 int res_retry[MAXRESTOTYPES]; /* resolver retry */ 2186 } TimeOuts; 2187 2188 /* timeout classes for return and warning timeouts */ 2189 #define TOC_NORMAL 0 /* normal delivery */ 2190 #define TOC_URGENT 1 /* urgent delivery */ 2191 #define TOC_NONURGENT 2 /* non-urgent delivery */ 2192 #define TOC_DSN 3 /* DSN delivery */ 2193 2194 /* resolver timeout specifiers */ 2195 #define RES_TO_FIRST 0 /* first attempt */ 2196 #define RES_TO_NORMAL 1 /* subsequent attempts */ 2197 #define RES_TO_DEFAULT 2 /* default value */ 2198 2199 /* functions */ 2200 extern void inittimeouts __P((char *, bool)); 2201 2202 /* 2203 ** Interface probing 2204 */ 2205 2206 #define DPI_PROBENONE 0 /* Don't probe any interfaces */ 2207 #define DPI_PROBEALL 1 /* Probe all interfaces */ 2208 #define DPI_SKIPLOOPBACK 2 /* Don't probe loopback interfaces */ 2209 2210 /* 2211 ** Trace information 2212 */ 2213 2214 /* macros for debugging flags */ 2215 #if NOT_SENDMAIL 2216 # define tTd(flag, level) (tTdvect[flag] >= (unsigned char)level) 2217 #else 2218 # define tTd(flag, level) (tTdvect[flag] >= (unsigned char)level && !IntSig) 2219 #endif 2220 #define tTdlevel(flag) (tTdvect[flag]) 2221 2222 /* variables */ 2223 extern unsigned char tTdvect[100]; /* trace vector */ 2224 2225 /* 2226 ** Miscellaneous information. 2227 */ 2228 2229 /* 2230 ** The "no queue id" queue id for sm_syslog 2231 */ 2232 2233 #define NOQID "" 2234 2235 #define CURHOSTNAME (CurHostName == NULL ? "local" : CurHostName) 2236 2237 /* 2238 ** Some in-line functions 2239 */ 2240 2241 /* set exit status */ 2242 #define setstat(s) \ 2243 do \ 2244 { \ 2245 if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ 2246 ExitStat = s; \ 2247 } while (0) 2248 2249 2250 #define STRUCTCOPY(s, d) d = s 2251 2252 /* free a pointer if it isn't NULL and set it to NULL */ 2253 #define SM_FREE_CLR(p) \ 2254 do \ 2255 { \ 2256 if ((p) != NULL) \ 2257 { \ 2258 sm_free(p); \ 2259 (p) = NULL; \ 2260 } \ 2261 } while (0) 2262 2263 /* 2264 ** Update a permanent string variable with a new value. 2265 ** The old value is freed, the new value is strdup'ed. 2266 ** 2267 ** We use sm_pstrdup_x to duplicate the string because it raises 2268 ** an exception on error, and because it allocates "permanent storage" 2269 ** which is not expected to be freed before process exit. 2270 ** The latter is important for memory leak analysis. 2271 ** 2272 ** If an exception occurs while strdup'ing the new value, 2273 ** then the variable remains set to the old value. 2274 ** That's why the strdup must occur before we free the old value. 2275 ** 2276 ** The macro uses a do loop so that this idiom will work: 2277 ** if (...) 2278 ** PSTRSET(var, val1); 2279 ** else 2280 ** PSTRSET(var, val2); 2281 */ 2282 #define PSTRSET(var, val) \ 2283 do \ 2284 { \ 2285 char *_newval = sm_pstrdup_x(val); \ 2286 if (var != NULL) \ 2287 sm_free(var); \ 2288 var = _newval; \ 2289 } while (0) 2290 2291 #define _CHECK_RESTART \ 2292 do \ 2293 { \ 2294 if (ShutdownRequest != NULL) \ 2295 shutdown_daemon(); \ 2296 else if (RestartRequest != NULL) \ 2297 restart_daemon(); \ 2298 else if (RestartWorkGroup) \ 2299 restart_marked_work_groups(); \ 2300 } while (0) 2301 2302 # define CHECK_RESTART _CHECK_RESTART 2303 2304 #define CHK_CUR_RUNNERS(fct, idx, count) \ 2305 do \ 2306 { \ 2307 if (CurRunners < 0) \ 2308 { \ 2309 if (LogLevel > 3) \ 2310 sm_syslog(LOG_ERR, NOQID, \ 2311 "%s: CurRunners=%d, i=%d, count=%d, status=should not happen", \ 2312 fct, CurRunners, idx, count); \ 2313 CurRunners = 0; \ 2314 } \ 2315 } while (0) 2316 2317 /* reply types (text in SmtpMsgBuffer) */ 2318 #define XS_DEFAULT 0 /* other commands, e.g., RSET */ 2319 #define XS_STARTTLS 1 2320 #define XS_AUTH 2 2321 #define XS_GREET 3 2322 #define XS_EHLO 4 2323 #define XS_MAIL 5 2324 #define XS_RCPT 6 2325 #define XS_DATA 7 2326 #define XS_EOM 8 2327 #define XS_DATA2 9 /* LMTP */ 2328 #define XS_QUIT 10 2329 2330 /* 2331 ** Global variables. 2332 */ 2333 2334 #if _FFR_ADD_BCC 2335 EXTERN bool AddBcc; 2336 #endif 2337 #if _FFR_ADDR_TYPE_MODES 2338 EXTERN bool AddrTypeModes; /* addr_type: extra "mode" information */ 2339 #endif /* _FFR_ADDR_TYPE_MODES */ 2340 EXTERN bool AllowBogusHELO; /* allow syntax errors on HELO command */ 2341 EXTERN bool CheckAliases; /* parse addresses during newaliases */ 2342 #if _FFR_QUEUE_RUN_PARANOIA 2343 EXTERN int CheckQueueRunners; /* check whether queue runners are OK */ 2344 #endif /* _FFR_QUEUE_RUN_PARANOIA */ 2345 EXTERN bool ColonOkInAddr; /* single colon legal in address */ 2346 #if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) 2347 EXTERN bool ConfigFileRead; /* configuration file has been read */ 2348 #endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */ 2349 EXTERN bool DisConnected; /* running with OutChannel redirect to transcript file */ 2350 EXTERN bool DontExpandCnames; /* do not $[...$] expand CNAMEs */ 2351 EXTERN bool DontInitGroups; /* avoid initgroups() because of NIS cost */ 2352 EXTERN bool DontLockReadFiles; /* don't read lock support files */ 2353 EXTERN bool DontPruneRoutes; /* don't prune source routes */ 2354 EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ 2355 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 2356 EXTERN bool FipsMode; 2357 EXTERN bool GrabTo; /* if set, get recipients from msg */ 2358 EXTERN bool EightBitAddrOK; /* we'll let 8-bit addresses through */ 2359 EXTERN bool HasEightBits; /* has at least one eight bit input byte */ 2360 EXTERN bool HasWildcardMX; /* don't use MX records when canonifying */ 2361 EXTERN bool HoldErrs; /* only output errors to transcript */ 2362 EXTERN bool IgnoreHostStatus; /* ignore long term host status files */ 2363 EXTERN bool IgnrDot; /* don't let dot end messages */ 2364 EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ 2365 EXTERN bool MatchGecos; /* look for user names in gecos field */ 2366 EXTERN bool MeToo; /* send to the sender also */ 2367 EXTERN bool NoAlias; /* suppress aliasing */ 2368 EXTERN bool NoConnect; /* don't connect to non-local mailers */ 2369 EXTERN bool OnlyOneError; /* .... or only want to give one SMTP reply */ 2370 EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ 2371 #if _FFR_REJECT_NUL_BYTE 2372 EXTERN bool RejectNUL; /* reject NUL input byte? */ 2373 #endif /* _FFR_REJECT_NUL_BYTE */ 2374 #if REQUIRES_DIR_FSYNC 2375 EXTERN bool RequiresDirfsync; /* requires fsync() for directory */ 2376 #endif /* REQUIRES_DIR_FSYNC */ 2377 EXTERN bool volatile RestartWorkGroup; /* daemon needs to restart some work groups */ 2378 EXTERN bool RrtImpliesDsn; /* turn Return-Receipt-To: into DSN */ 2379 EXTERN bool SaveFrom; /* save leading "From" lines */ 2380 EXTERN bool SendMIMEErrors; /* send error messages in MIME format */ 2381 EXTERN bool SevenBitInput; /* force 7-bit data on input */ 2382 EXTERN bool SingleLineFromHeader; /* force From: header to be one line */ 2383 EXTERN bool SingleThreadDelivery; /* single thread hosts on delivery */ 2384 EXTERN bool SoftBounce; /* replace 5xy by 4xy (for testing) */ 2385 EXTERN bool volatile StopRequest; /* stop sending output */ 2386 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 2387 EXTERN bool TryNullMXList; /* if we are the best MX, try host directly */ 2388 EXTERN bool UseMSP; /* mail submission: group writable queue ok? */ 2389 EXTERN bool WorkAroundBrokenAAAA; /* some nameservers return SERVFAIL on AAAA queries */ 2390 EXTERN bool UseErrorsTo; /* use Errors-To: header (back compat) */ 2391 EXTERN bool UseNameServer; /* using DNS -- interpret h_errno & MX RRs */ 2392 EXTERN bool UseCompressedIPv6Addresses; /* for more specific zero-subnet matches */ 2393 EXTERN char InetMode; /* default network for daemon mode */ 2394 EXTERN char OpMode; /* operation mode, see below */ 2395 EXTERN char SpaceSub; /* substitution for <lwsp> */ 2396 #if _FFR_BADRCPT_SHUTDOWN 2397 EXTERN int BadRcptShutdown; /* Shutdown connection for rejected RCPTs */ 2398 EXTERN int BadRcptShutdownGood; /* above even when there are good RCPTs */ 2399 #endif /* _FFR_BADRCPT_SHUTDOWN */ 2400 EXTERN int BadRcptThrottle; /* Throttle rejected RCPTs per SMTP message */ 2401 #if _FFR_RCPTTHROTDELAY 2402 EXTERN unsigned int BadRcptThrottleDelay; /* delay for BadRcptThrottle */ 2403 #else 2404 # define BadRcptThrottleDelay 1 2405 #endif /* _FFR_RCPTTHROTDELAY */ 2406 EXTERN int CheckpointInterval; /* queue file checkpoint interval */ 2407 EXTERN int ConfigLevel; /* config file level */ 2408 EXTERN int ConnRateThrottle; /* throttle for SMTP connection rate */ 2409 EXTERN int volatile CurChildren; /* current number of daemonic children */ 2410 EXTERN int CurrentLA; /* current load average */ 2411 EXTERN int DefaultNotify; /* default DSN notification flags */ 2412 EXTERN int DelayLA; /* load average to delay connections */ 2413 EXTERN int DontProbeInterfaces; /* don't probe interfaces for names */ 2414 EXTERN int Errors; /* set if errors (local to single pass) */ 2415 EXTERN int ExitStat; /* exit status code */ 2416 EXTERN int FastSplit; /* fast initial splitting of envelopes */ 2417 EXTERN int FileMode; /* mode on files */ 2418 EXTERN int LineNumber; /* line number in current input */ 2419 EXTERN int LogLevel; /* level of logging to perform */ 2420 EXTERN int MaxAliasRecursion; /* maximum depth of alias recursion */ 2421 EXTERN int MaxChildren; /* maximum number of daemonic children */ 2422 EXTERN int MaxForwardEntries; /* maximum number of forward entries */ 2423 EXTERN int MaxHeadersLength; /* max length of headers */ 2424 EXTERN int MaxHopCount; /* max # of hops until bounce */ 2425 EXTERN int MaxMacroRecursion; /* maximum depth of macro recursion */ 2426 EXTERN int MaxMimeFieldLength; /* maximum MIME field length */ 2427 EXTERN int MaxMimeHeaderLength; /* maximum MIME header length */ 2428 EXTERN int MaxNOOPCommands; /* max "noise" commands before slowdown */ 2429 2430 EXTERN int MaxRcptPerMsg; /* max recipients per SMTP message */ 2431 EXTERN int MaxRuleRecursion; /* maximum depth of ruleset recursion */ 2432 #if _FFR_MSG_ACCEPT 2433 EXTERN char *MessageAccept; /* "Message accepted for delivery" reply text */ 2434 #endif /* _FFR_MSG_ACCEPT */ 2435 2436 EXTERN int MimeMode; /* MIME processing mode */ 2437 EXTERN int NoRecipientAction; 2438 2439 #if SM_CONF_SHM 2440 EXTERN int Numfilesys; /* number of queue file systems */ 2441 EXTERN int *PNumFileSys; 2442 # define NumFileSys (*PNumFileSys) 2443 # else /* SM_CONF_SHM */ 2444 EXTERN int NumFileSys; /* number of queue file systems */ 2445 # endif /* SM_CONF_SHM */ 2446 2447 EXTERN int QueueLA; /* load average starting forced queueing */ 2448 EXTERN int RefuseLA; /* load average refusing connections */ 2449 EXTERN time_t RejectLogInterval; /* time btwn log msgs while refusing */ 2450 #if _FFR_MEMSTAT 2451 EXTERN long QueueLowMem; /* low memory starting forced queueing */ 2452 EXTERN long RefuseLowMem; /* low memory refusing connections */ 2453 EXTERN char *MemoryResource;/* memory resource to look up */ 2454 #endif /* _FFR_MEMSTAT */ 2455 EXTERN int SuperSafe; /* be extra careful, even if expensive */ 2456 EXTERN int VendorCode; /* vendor-specific operation enhancements */ 2457 EXTERN int Verbose; /* set if blow-by-blow desired */ 2458 EXTERN gid_t DefGid; /* default gid to run as */ 2459 EXTERN gid_t RealGid; /* real gid of caller */ 2460 EXTERN gid_t RunAsGid; /* GID to become for bulk of run */ 2461 EXTERN gid_t EffGid; /* effective gid */ 2462 #if SM_CONF_SHM 2463 EXTERN key_t ShmKey; /* shared memory key */ 2464 EXTERN char *ShmKeyFile; /* shared memory key file */ 2465 #endif /* SM_CONF_SHM */ 2466 EXTERN pid_t CurrentPid; /* current process id */ 2467 EXTERN pid_t DaemonPid; /* process id of daemon */ 2468 EXTERN pid_t PidFilePid; /* daemon/queue runner who wrote pid file */ 2469 EXTERN uid_t DefUid; /* default uid to run as */ 2470 EXTERN uid_t RealUid; /* real uid of caller */ 2471 EXTERN uid_t RunAsUid; /* UID to become for bulk of run */ 2472 EXTERN uid_t TrustedUid; /* uid of trusted user for files and startup */ 2473 EXTERN size_t DataFileBufferSize; /* size of buf for in-core data file */ 2474 EXTERN time_t DeliverByMin; /* deliver by minimum time */ 2475 EXTERN time_t DialDelay; /* delay between dial-on-demand tries */ 2476 EXTERN time_t SafeAlias; /* interval to wait until @:@ in alias file */ 2477 EXTERN time_t ServiceCacheMaxAge; /* refresh interval for cache */ 2478 EXTERN size_t XscriptFileBufferSize; /* size of buf for in-core transcript file */ 2479 EXTERN MODE_T OldUmask; /* umask when sendmail starts up */ 2480 EXTERN long MaxMessageSize; /* advertised max size we will accept */ 2481 EXTERN long MinBlocksFree; /* min # of blocks free on queue fs */ 2482 EXTERN long QueueFactor; /* slope of queue function */ 2483 EXTERN long WkClassFact; /* multiplier for message class -> priority */ 2484 EXTERN long WkRecipFact; /* multiplier for # of recipients -> priority */ 2485 EXTERN long WkTimeFact; /* priority offset each time this job is run */ 2486 EXTERN char *ControlSocketName; /* control socket filename [control.c] */ 2487 EXTERN char *CurHostName; /* current host we are dealing with */ 2488 EXTERN char *DeadLetterDrop; /* path to dead letter office */ 2489 EXTERN char *DefUser; /* default user to run as (from DefUid) */ 2490 EXTERN char *DefaultCharSet; /* default character set for MIME */ 2491 EXTERN char *DoubleBounceAddr; /* where to send double bounces */ 2492 EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ 2493 EXTERN char *FallbackMX; /* fall back MX host */ 2494 EXTERN char *FallbackSmartHost; /* fall back smart host */ 2495 EXTERN char *FileName; /* name to print on error messages */ 2496 EXTERN char *ForwardPath; /* path to search for .forward files */ 2497 EXTERN char *HeloName; /* hostname to announce in HELO */ 2498 EXTERN char *HelpFile; /* location of SMTP help file */ 2499 EXTERN char *HostStatDir; /* location of host status information */ 2500 EXTERN char *HostsFile; /* path to /etc/hosts file */ 2501 extern char *Mbdb; /* mailbox database type */ 2502 EXTERN char *MustQuoteChars; /* quote these characters in phrases */ 2503 EXTERN char *MyHostName; /* name of this host for SMTP messages */ 2504 EXTERN char *OperatorChars; /* operators (old $o macro) */ 2505 EXTERN char *PidFile; /* location of proc id file [conf.c] */ 2506 EXTERN char *PostMasterCopy; /* address to get errs cc's */ 2507 EXTERN char *ProcTitlePrefix; /* process title prefix */ 2508 EXTERN char *RealHostName; /* name of host we are talking to */ 2509 EXTERN char *RealUserName; /* real user name of caller */ 2510 EXTERN char *volatile RestartRequest;/* a sendmail restart has been requested */ 2511 EXTERN char *RunAsUserName; /* user to become for bulk of run */ 2512 EXTERN char *SafeFileEnv; /* chroot location for file delivery */ 2513 EXTERN char *ServiceSwitchFile; /* backup service switch */ 2514 EXTERN char *volatile ShutdownRequest;/* a sendmail shutdown has been requested */ 2515 EXTERN bool volatile IntSig; 2516 EXTERN char *SmtpGreeting; /* SMTP greeting message (old $e macro) */ 2517 EXTERN char *SmtpPhase; /* current phase in SMTP processing */ 2518 EXTERN char SmtpError[MAXLINE]; /* save failure error messages */ 2519 EXTERN char *StatFile; /* location of statistics summary */ 2520 EXTERN char *TimeZoneSpec; /* override time zone specification */ 2521 EXTERN char *UdbSpec; /* user database source spec */ 2522 EXTERN char *UnixFromLine; /* UNIX From_ line (old $l macro) */ 2523 EXTERN char **ExternalEnviron; /* saved user (input) environment */ 2524 EXTERN char **SaveArgv; /* argument vector for re-execing */ 2525 EXTERN BITMAP256 DontBlameSendmail; /* DontBlameSendmail bits */ 2526 EXTERN SM_FILE_T *InChannel; /* input connection */ 2527 EXTERN SM_FILE_T *OutChannel; /* output connection */ 2528 EXTERN SM_FILE_T *TrafficLogFile; /* file in which to log all traffic */ 2529 #if HESIOD 2530 EXTERN void *HesiodContext; 2531 #endif /* HESIOD */ 2532 EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ 2533 EXTERN char *RuleSetNames[MAXRWSETS]; /* ruleset number to name */ 2534 EXTERN char *UserEnviron[MAXUSERENVIRON + 1]; 2535 EXTERN struct rewrite *RewriteRules[MAXRWSETS]; 2536 EXTERN struct termescape TermEscape; /* terminal escape codes */ 2537 EXTERN SOCKADDR ConnectOnlyTo; /* override connection address (for testing) */ 2538 EXTERN SOCKADDR RealHostAddr; /* address of host we are talking to */ 2539 extern const SM_EXC_TYPE_T EtypeQuickAbort; /* type of a QuickAbort exception */ 2540 2541 2542 EXTERN int ConnectionRateWindowSize; 2543 #if STARTTLS && USE_OPENSSL_ENGINE 2544 EXTERN bool SSLEngineInitialized; 2545 #endif /* STARTTLS && USE_OPENSSL_ENGINE */ 2546 2547 /* 2548 ** Declarations of useful functions 2549 */ 2550 2551 /* Transcript file */ 2552 extern void closexscript __P((ENVELOPE *)); 2553 extern void openxscript __P((ENVELOPE *)); 2554 2555 /* error related */ 2556 extern void buffer_errors __P((void)); 2557 extern void flush_errors __P((bool)); 2558 extern void PRINTFLIKE(1, 2) message __P((const char *, ...)); 2559 extern void PRINTFLIKE(1, 2) nmessage __P((const char *, ...)); 2560 #if _FFR_PROXY 2561 extern void PRINTFLIKE(3, 4) emessage __P((const char *, const char *, const char *, ...)); 2562 extern int extsc __P((const char *, int, char *, char *)); 2563 #endif /* _FFR_PROXY */ 2564 extern void PRINTFLIKE(1, 2) syserr __P((const char *, ...)); 2565 extern void PRINTFLIKE(2, 3) usrerrenh __P((char *, const char *, ...)); 2566 extern void PRINTFLIKE(1, 2) usrerr __P((const char *, ...)); 2567 extern int isenhsc __P((const char *, int)); 2568 extern int extenhsc __P((const char *, int, char *)); 2569 2570 /* alias file */ 2571 extern void alias __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 2572 extern bool aliaswait __P((MAP *, char *, bool)); 2573 extern void forward __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 2574 extern void readaliases __P((MAP *, SM_FILE_T *, bool, bool)); 2575 extern bool rebuildaliases __P((MAP *, bool)); 2576 extern void setalias __P((char *)); 2577 2578 /* logging */ 2579 extern void logdelivery __P((MAILER *, MCI *, char *, const char *, ADDRESS *, time_t, ENVELOPE *, ADDRESS *, int)); 2580 extern void logsender __P((ENVELOPE *, char *)); 2581 extern void PRINTFLIKE(3, 4) sm_syslog __P((int, const char *, const char *, ...)); 2582 2583 /* SMTP */ 2584 extern void giveresponse __P((int, char *, MAILER *, MCI *, ADDRESS *, time_t, ENVELOPE *, ADDRESS *)); 2585 extern int reply __P((MAILER *, MCI *, ENVELOPE *, time_t, void (*)__P((char *, bool, MAILER *, MCI *, ENVELOPE *)), char **, int)); 2586 extern void smtp __P((char *volatile, BITMAP256, ENVELOPE *volatile)); 2587 #if SASL 2588 extern int smtpauth __P((MAILER *, MCI *, ENVELOPE *)); 2589 #endif /* SASL */ 2590 extern int smtpdata __P((MAILER *, MCI *, ENVELOPE *, ADDRESS *, time_t)); 2591 extern int smtpgetstat __P((MAILER *, MCI *, ENVELOPE *)); 2592 extern int smtpmailfrom __P((MAILER *, MCI *, ENVELOPE *)); 2593 extern void smtpmessage __P((char *, MAILER *, MCI *, ...)); 2594 extern void smtpinit __P((MAILER *, MCI *, ENVELOPE *, bool)); 2595 extern char *smtptodsn __P((int)); 2596 extern int smtpprobe __P((MCI *)); 2597 extern void smtpquit __P((MAILER *, MCI *, ENVELOPE *)); 2598 extern int smtprcpt __P((ADDRESS *, MAILER *, MCI *, ENVELOPE *, ADDRESS *, time_t)); 2599 extern void smtprset __P((MAILER *, MCI *, ENVELOPE *)); 2600 2601 #define REPLYTYPE(r) ((r) / 100) /* first digit of reply code */ 2602 #define REPLYCLASS(r) (((r) / 10) % 10) /* second digit of reply code */ 2603 #define REPLYMINOR(r) ((r) % 10) /* last digit of reply code */ 2604 #define ISSMTPCODE(c) (isascii(c[0]) && isdigit(c[0]) && \ 2605 isascii(c[1]) && isdigit(c[1]) && \ 2606 isascii(c[2]) && isdigit(c[2])) 2607 #define ISSMTPREPLY(c) (ISSMTPCODE(c) && \ 2608 (c[3] == ' ' || c[3] == '-' || c[3] == '\0')) 2609 2610 /* delivery */ 2611 extern pid_t dowork __P((int, int, char *, bool, bool, ENVELOPE *)); 2612 extern pid_t doworklist __P((ENVELOPE *, bool, bool)); 2613 extern int endmailer __P((MCI *, ENVELOPE *, char **)); 2614 extern int mailfile __P((char *volatile, MAILER *volatile, ADDRESS *, volatile long, ENVELOPE *)); 2615 extern void sendall __P((ENVELOPE *, int)); 2616 2617 /* stats */ 2618 #define STATS_NORMAL 'n' 2619 #define STATS_QUARANTINE 'q' 2620 #define STATS_REJECT 'r' 2621 #define STATS_CONNECT 'c' 2622 2623 extern void markstats __P((ENVELOPE *, ADDRESS *, int)); 2624 extern void clearstats __P((void)); 2625 extern void poststats __P((char *)); 2626 2627 /* control socket */ 2628 extern void closecontrolsocket __P((bool)); 2629 extern void clrcontrol __P((void)); 2630 extern void control_command __P((int, ENVELOPE *)); 2631 extern int opencontrolsocket __P((void)); 2632 2633 #if MILTER 2634 /* milter functions */ 2635 extern void milter_config __P((char *, struct milter **, int)); 2636 extern void milter_setup __P((char *)); 2637 extern void milter_set_option __P((char *, char *, bool)); 2638 extern bool milter_init __P((ENVELOPE *, char *, milters_T *)); 2639 extern void milter_quit __P((ENVELOPE *)); 2640 extern void milter_abort __P((ENVELOPE *)); 2641 extern char *milter_connect __P((char *, SOCKADDR, ENVELOPE *, char *)); 2642 extern char *milter_helo __P((char *, ENVELOPE *, char *)); 2643 extern char *milter_envfrom __P((char **, ENVELOPE *, char *)); 2644 extern char *milter_data_cmd __P((ENVELOPE *, char *)); 2645 extern char *milter_envrcpt __P((char **, ENVELOPE *, char *, bool)); 2646 extern char *milter_data __P((ENVELOPE *, char *)); 2647 extern char *milter_unknown __P((char *, ENVELOPE *, char *)); 2648 #endif /* MILTER */ 2649 2650 extern char *addquotes __P((char *, SM_RPOOL_T *)); 2651 extern char *arpadate __P((char *)); 2652 extern bool atobool __P((char *)); 2653 extern int atooct __P((char *)); 2654 extern void auth_warning __P((ENVELOPE *, const char *, ...)); 2655 extern int blocksignal __P((int)); 2656 extern bool bitintersect __P((BITMAP256, BITMAP256)); 2657 extern bool bitzerop __P((BITMAP256)); 2658 extern int check_bodytype __P((char *)); 2659 extern void buildfname __P((char *, char *, char *, int)); 2660 extern bool chkclientmodifiers __P((int)); 2661 extern bool chkdaemonmodifiers __P((int)); 2662 extern int checkcompat __P((ADDRESS *, ENVELOPE *)); 2663 #ifdef XDEBUG 2664 extern void checkfd012 __P((char *)); 2665 extern void checkfdopen __P((int, char *)); 2666 #endif /* XDEBUG */ 2667 extern void checkfds __P((char *)); 2668 extern bool chownsafe __P((int, bool)); 2669 extern void cleanstrcpy __P((char *, char *, int)); 2670 #if SM_CONF_SHM 2671 extern void cleanup_shm __P((bool)); 2672 #endif /* SM_CONF_SHM */ 2673 extern void close_sendmail_pid __P((void)); 2674 extern void clrdaemon __P((void)); 2675 extern void collect __P((SM_FILE_T *, bool, HDR **, ENVELOPE *, bool)); 2676 extern bool connection_rate_check __P((SOCKADDR *, ENVELOPE *)); 2677 extern time_t convtime __P((char *, int)); 2678 extern char **copyplist __P((char **, bool, SM_RPOOL_T *)); 2679 extern void copy_class __P((int, int)); 2680 extern int count_open_connections __P((SOCKADDR *)); 2681 extern time_t curtime __P((void)); 2682 extern char *defcharset __P((ENVELOPE *)); 2683 extern char *denlstring __P((char *, bool, bool)); 2684 extern void dferror __P((SM_FILE_T *volatile, char *, ENVELOPE *)); 2685 extern void disconnect __P((int, ENVELOPE *)); 2686 extern void disk_status __P((SM_FILE_T *, char *)); 2687 extern bool dns_getcanonname __P((char *, int, bool, int *, int *)); 2688 extern pid_t dofork __P((void)); 2689 extern int drop_privileges __P((bool)); 2690 extern int dsntoexitstat __P((char *)); 2691 extern void dumpfd __P((int, bool, bool)); 2692 #if SM_HEAP_CHECK 2693 extern void dumpstab __P((void)); 2694 #endif /* SM_HEAP_CHECK */ 2695 extern void dumpstate __P((char *)); 2696 extern bool enoughdiskspace __P((long, ENVELOPE *)); 2697 extern char *exitstat __P((char *)); 2698 extern void fatal_error __P((SM_EXC_T *)); 2699 extern char *fgetfolded __P((char *, int *, SM_FILE_T *)); 2700 extern void fill_fd __P((int, char *)); 2701 extern char *find_character __P((char *, int)); 2702 extern int finduser __P((char *, bool *, SM_MBDB_T *)); 2703 extern void finis __P((bool, bool, volatile int)); 2704 extern void fixcrlf __P((char *, bool)); 2705 extern long freediskspace __P((const char *, long *)); 2706 #if NETINET6 && NEEDSGETIPNODE 2707 extern void freehostent __P((struct hostent *)); 2708 #endif /* NETINET6 && NEEDSGETIPNODE */ 2709 extern char *get_column __P((char *, int, int, char *, int)); 2710 extern char *getauthinfo __P((int, bool *)); 2711 extern int getdtsize __P((void)); 2712 extern int getla __P((void)); 2713 extern char *getmodifiers __P((char *, BITMAP256)); 2714 extern BITMAP256 *getrequests __P((ENVELOPE *)); 2715 extern char *getvendor __P((int)); 2716 #if _FFR_TLS_SE_OPTS && STARTTLS 2717 # ifndef TLS_VRFY_PER_CTX 2718 # define TLS_VRFY_PER_CTX 1 2719 # endif 2720 extern int get_tls_se_options __P((ENVELOPE *, SSL *, bool)); 2721 #else 2722 # define get_tls_se_options(e, s, w) 0 2723 #endif 2724 extern void help __P((char *, ENVELOPE *)); 2725 extern void init_md __P((int, char **)); 2726 extern void initdaemon __P((void)); 2727 extern void inithostmaps __P((void)); 2728 extern void initmacros __P((ENVELOPE *)); 2729 extern void initsetproctitle __P((int, char **, char **)); 2730 extern void init_vendor_macros __P((ENVELOPE *)); 2731 extern SIGFUNC_DECL intsig __P((int)); 2732 extern bool isatom __P((const char *)); 2733 extern bool isloopback __P((SOCKADDR sa)); 2734 #if _FFR_TLS_SE_OPTS && STARTTLS 2735 extern bool load_certkey __P((SSL *, bool, char *, char *)); 2736 #endif 2737 extern void load_if_names __P((void)); 2738 extern bool lockfile __P((int, char *, char *, int)); 2739 extern void log_sendmail_pid __P((ENVELOPE *)); 2740 extern void logundelrcpts __P((ENVELOPE *, char *, int, bool)); 2741 extern char lower __P((int)); 2742 extern void makelower __P((char *)); 2743 extern int makeconnection_ds __P((char *, MCI *)); 2744 extern int makeconnection __P((char *, volatile unsigned int, MCI *, ENVELOPE *, time_t)); 2745 extern void makeworkgroups __P((void)); 2746 extern void markfailure __P((ENVELOPE *, ADDRESS *, MCI *, int, bool)); 2747 extern void mark_work_group_restart __P((int, int)); 2748 extern MCI *mci_new __P((SM_RPOOL_T *)); 2749 extern char *munchstring __P((char *, char **, int)); 2750 extern struct hostent *myhostname __P((char *, int)); 2751 extern char *newstr __P((const char *)); 2752 #if NISPLUS 2753 extern char *nisplus_default_domain __P((void)); /* extern for Sun */ 2754 #endif /* NISPLUS */ 2755 extern bool path_is_dir __P((char *, bool)); 2756 extern int pickqdir __P((QUEUEGRP *qg, long fsize, ENVELOPE *e)); 2757 extern char *pintvl __P((time_t, bool)); 2758 extern void printav __P((SM_FILE_T *, char **)); 2759 extern void printmailer __P((SM_FILE_T *, MAILER *)); 2760 extern void printnqe __P((SM_FILE_T *, char *)); 2761 extern void printopenfds __P((bool)); 2762 extern void printqueue __P((void)); 2763 extern void printrules __P((void)); 2764 extern pid_t prog_open __P((char **, int *, ENVELOPE *)); 2765 extern bool putline __P((char *, MCI *)); 2766 extern bool putxline __P((char *, size_t, MCI *, int)); 2767 extern void queueup_macros __P((int, SM_FILE_T *, ENVELOPE *)); 2768 extern void readcf __P((char *, bool, ENVELOPE *)); 2769 extern SIGFUNC_DECL reapchild __P((int)); 2770 extern int releasesignal __P((int)); 2771 extern void resetlimits __P((void)); 2772 extern void restart_daemon __P((void)); 2773 extern void restart_marked_work_groups __P((void)); 2774 extern bool rfc822_string __P((char *)); 2775 extern void rmexpstab __P((void)); 2776 extern bool savemail __P((ENVELOPE *, bool)); 2777 extern void seed_random __P((void)); 2778 extern void sendtoargv __P((char **, ENVELOPE *)); 2779 extern void setclientoptions __P((char *)); 2780 extern bool setdaemonoptions __P((char *)); 2781 extern void setdefaults __P((ENVELOPE *)); 2782 extern void setdefuser __P((void)); 2783 extern bool setvendor __P((char *)); 2784 extern void set_op_mode __P((int)); 2785 extern void setoption __P((int, char *, bool, bool, ENVELOPE *)); 2786 extern sigfunc_t setsignal __P((int, sigfunc_t)); 2787 extern void sm_setuserenv __P((const char *, const char *)); 2788 extern void settime __P((ENVELOPE *)); 2789 #if STARTTLS 2790 extern int set_tls_rd_tmo __P((int)); 2791 #else 2792 # define set_tls_rd_tmo(rd_tmo) 0 2793 #endif 2794 extern char *sfgets __P((char *, int, SM_FILE_T *, time_t, char *)); 2795 extern char *shortenstring __P((const char *, size_t)); 2796 extern char *shorten_hostname __P((char [])); 2797 extern bool shorten_rfc822_string __P((char *, size_t)); 2798 extern void shutdown_daemon __P((void)); 2799 extern void sm_closefrom __P((int lowest, int highest)); 2800 extern void sm_close_on_exec __P((int lowest, int highest)); 2801 extern struct hostent *sm_gethostbyname __P((char *, int)); 2802 extern struct hostent *sm_gethostbyaddr __P((char *, int, int)); 2803 extern void sm_getla __P((void)); 2804 extern struct passwd *sm_getpwnam __P((char *)); 2805 extern struct passwd *sm_getpwuid __P((UID_T)); 2806 extern void sm_setproctitle __P((bool, ENVELOPE *, const char *, ...)); 2807 extern pid_t sm_wait __P((int *)); 2808 extern bool split_by_recipient __P((ENVELOPE *e)); 2809 extern void stop_sendmail __P((void)); 2810 extern void stripbackslash __P((char *)); 2811 extern bool strreplnonprt __P((char *, int)); 2812 extern bool strcontainedin __P((bool, char *, char *)); 2813 extern int switch_map_find __P((char *, char *[], short [])); 2814 #if STARTTLS 2815 extern void tls_set_verify __P((SSL_CTX *, SSL *, bool)); 2816 #endif /* STARTTLS */ 2817 extern bool transienterror __P((int)); 2818 extern void truncate_at_delim __P((char *, size_t, int)); 2819 extern void tTflag __P((char *)); 2820 extern void tTsetup __P((unsigned char *, unsigned int, char *)); 2821 extern SIGFUNC_DECL tick __P((int)); 2822 extern char *ttypath __P((void)); 2823 extern void unlockqueue __P((ENVELOPE *)); 2824 #if !HASUNSETENV 2825 extern void unsetenv __P((char *)); 2826 #endif /* !HASUNSETENV */ 2827 2828 /* update file system information: +/- some blocks */ 2829 #if SM_CONF_SHM 2830 extern void upd_qs __P((ENVELOPE *, int, int, char *)); 2831 # define updfs(e, count, space, where) upd_qs(e, count, space, where) 2832 #else /* SM_CONF_SHM */ 2833 # define updfs(e, count, space, where) 2834 # define upd_qs(e, count, space, where) 2835 #endif /* SM_CONF_SHM */ 2836 2837 extern char *username __P((void)); 2838 extern bool usershellok __P((char *, char *)); 2839 extern void vendor_post_defaults __P((ENVELOPE *)); 2840 extern void vendor_pre_defaults __P((ENVELOPE *)); 2841 extern int waitfor __P((pid_t)); 2842 extern bool writable __P((char *, ADDRESS *, long)); 2843 #if SM_HEAP_CHECK 2844 # define xalloc(size) xalloc_tagged(size, __FILE__, __LINE__) 2845 extern char *xalloc_tagged __P((int, char *, int)); 2846 #else /* SM_HEAP_CHECK */ 2847 extern char *xalloc __P((int)); 2848 #endif /* SM_HEAP_CHECK */ 2849 #if _FFR_XCNCT 2850 extern int xconnect __P((SM_FILE_T *)); 2851 #endif /* _FFR_XCNCT */ 2852 extern void xputs __P((SM_FILE_T *, const char *)); 2853 extern char *xtextify __P((char *, char *)); 2854 extern bool xtextok __P((char *)); 2855 extern int xunlink __P((char *)); 2856 extern char *xuntextify __P((char *)); 2857 2858 #if _FFR_RCPTFLAGS 2859 extern bool newmodmailer __P((ADDRESS *, int)); 2860 #endif 2861 2862 #undef EXTERN 2863 #endif /* ! _SENDMAIL_H */ 2864