1 /* 2 * Copyright (c) 1983 Eric P. Allman 3 * Copyright (c) 1988, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * %sccs.include.redist.c% 7 * 8 * @(#)sendmail.h 8.120 (Berkeley) 04/10/95 9 */ 10 11 /* 12 ** SENDMAIL.H -- Global definitions for sendmail. 13 */ 14 15 # ifdef _DEFINE 16 # define EXTERN 17 # ifndef lint 18 static char SmailSccsId[] = "@(#)sendmail.h 8.120 04/10/95"; 19 # endif 20 # else /* _DEFINE */ 21 # define EXTERN extern 22 # endif /* _DEFINE */ 23 24 # include <unistd.h> 25 # include <stddef.h> 26 # include <stdlib.h> 27 # include <stdio.h> 28 # include <ctype.h> 29 # include <setjmp.h> 30 # include <string.h> 31 # include <time.h> 32 # include <errno.h> 33 # ifdef EX_OK 34 # undef EX_OK /* for SVr4.2 SMP */ 35 # endif 36 # include <sysexits.h> 37 38 # include "conf.h" 39 # include "useful.h" 40 41 # ifdef LOG 42 # include <syslog.h> 43 # endif /* LOG */ 44 45 # ifdef DAEMON 46 # include <sys/socket.h> 47 # endif 48 # ifdef NETUNIX 49 # include <sys/un.h> 50 # endif 51 # ifdef NETINET 52 # include <netinet/in.h> 53 # endif 54 # ifdef NETISO 55 # include <netiso/iso.h> 56 # endif 57 # ifdef NETNS 58 # include <netns/ns.h> 59 # endif 60 # ifdef NETX25 61 # include <netccitt/x25.h> 62 # endif 63 64 65 66 67 /* 68 ** Data structure for bit maps. 69 ** 70 ** Each bit in this map can be referenced by an ascii character. 71 ** This is 256 possible bits, or 32 8-bit bytes. 72 */ 73 74 #define BITMAPBYTES 32 /* number of bytes in a bit map */ 75 #define BYTEBITS 8 /* number of bits in a byte */ 76 77 /* internal macros */ 78 #define _BITWORD(bit) ((bit) / (BYTEBITS * sizeof (int))) 79 #define _BITBIT(bit) (1 << ((bit) % (BYTEBITS * sizeof (int)))) 80 81 typedef int BITMAP[BITMAPBYTES / sizeof (int)]; 82 83 /* test bit number N */ 84 #define bitnset(bit, map) ((map)[_BITWORD(bit)] & _BITBIT(bit)) 85 86 /* set bit number N */ 87 #define setbitn(bit, map) (map)[_BITWORD(bit)] |= _BITBIT(bit) 88 89 /* clear bit number N */ 90 #define clrbitn(bit, map) (map)[_BITWORD(bit)] &= ~_BITBIT(bit) 91 92 /* clear an entire bit map */ 93 #define clrbitmap(map) bzero((char *) map, BITMAPBYTES) 94 /* 95 ** Address structure. 96 ** Addresses are stored internally in this structure. 97 */ 98 99 struct address 100 { 101 char *q_paddr; /* the printname for the address */ 102 char *q_user; /* user name */ 103 char *q_ruser; /* real user name, or NULL if q_user */ 104 char *q_host; /* host name */ 105 struct mailer *q_mailer; /* mailer to use */ 106 u_long q_flags; /* status flags, see below */ 107 uid_t q_uid; /* user-id of receiver (if known) */ 108 gid_t q_gid; /* group-id of receiver (if known) */ 109 char *q_home; /* home dir (local mailer only) */ 110 char *q_fullname; /* full name if known */ 111 struct address *q_next; /* chain */ 112 struct address *q_alias; /* address this results from */ 113 char *q_owner; /* owner of q_alias */ 114 struct address *q_tchain; /* temporary use chain */ 115 char *q_orcpt; /* ORCPT parameter from RCPT TO: line */ 116 char *q_status; /* status code for DSNs */ 117 char *q_fstatus; /* final status code for DSNs */ 118 char *q_rstatus; /* remote status message for DSNs */ 119 time_t q_statdate; /* date of status messages */ 120 char *q_statmta; /* MTA generating q_rstatus */ 121 short q_specificity; /* how "specific" this address is */ 122 }; 123 124 typedef struct address ADDRESS; 125 126 # define QDONTSEND 0x00000001 /* don't send to this address */ 127 # define QBADADDR 0x00000002 /* this address is verified bad */ 128 # define QGOODUID 0x00000004 /* the q_uid q_gid fields are good */ 129 # define QPRIMARY 0x00000008 /* set from RCPT or argv */ 130 # define QQUEUEUP 0x00000010 /* queue for later transmission */ 131 # define QSENT 0x00000020 /* has been successfully delivered */ 132 # define QNOTREMOTE 0x00000040 /* address not for remote forwarding */ 133 # define QSELFREF 0x00000080 /* this address references itself */ 134 # define QVERIFIED 0x00000100 /* verified, but not expanded */ 135 # define QREPORT 0x00000200 /* report this addr in return message */ 136 # define QBOGUSSHELL 0x00000400 /* user has no valid shell listed */ 137 # define QUNSAFEADDR 0x00000800 /* address aquired via unsafe path */ 138 # define QPINGONSUCCESS 0x00001000 /* give return on successful delivery */ 139 # define QPINGONFAILURE 0x00002000 /* give return on failure */ 140 # define QPINGONDELAY 0x00004000 /* give return on message delay */ 141 # define QHASNOTIFY 0x00008000 /* propogate notify parameter */ 142 # define QRELAYED 0x00010000 /* relayed to non-DSN aware mailer */ 143 # define QEXPLODED 0x00020000 /* undergone mailing list explosion */ 144 # define QTHISPASS 0x80000000 /* temp: address set this pass */ 145 146 # define NULLADDR ((ADDRESS *) NULL) 147 /* 148 ** Mailer definition structure. 149 ** Every mailer known to the system is declared in this 150 ** structure. It defines the pathname of the mailer, some 151 ** flags associated with it, and the argument vector to 152 ** pass to it. The flags are defined in conf.c 153 ** 154 ** The argument vector is expanded before actual use. All 155 ** words except the first are passed through the macro 156 ** processor. 157 */ 158 159 struct mailer 160 { 161 char *m_name; /* symbolic name of this mailer */ 162 char *m_mailer; /* pathname of the mailer to use */ 163 char *m_mtatype; /* type of this MTA */ 164 char *m_addrtype; /* type for addresses */ 165 char *m_diagtype; /* type for diagnostics */ 166 BITMAP m_flags; /* status flags, see below */ 167 short m_mno; /* mailer number internally */ 168 char **m_argv; /* template argument vector */ 169 short m_sh_rwset; /* rewrite set: sender header addresses */ 170 short m_se_rwset; /* rewrite set: sender envelope addresses */ 171 short m_rh_rwset; /* rewrite set: recipient header addresses */ 172 short m_re_rwset; /* rewrite set: recipient envelope addresses */ 173 char *m_eol; /* end of line string */ 174 long m_maxsize; /* size limit on message to this mailer */ 175 int m_linelimit; /* max # characters per line */ 176 char *m_execdir; /* directory to chdir to before execv */ 177 uid_t m_uid; /* UID to run as */ 178 gid_t m_gid; /* GID to run as */ 179 char *m_defcharset; /* default character set */ 180 }; 181 182 typedef struct mailer MAILER; 183 184 /* bits for m_flags */ 185 # define M_ESMTP 'a' /* run Extended SMTP protocol */ 186 # define M_ALIASABLE 'A' /* user can be LHS of an alias */ 187 # define M_BLANKEND 'b' /* ensure blank line at end of message */ 188 # define M_NOCOMMENT 'c' /* don't include comment part of address */ 189 # define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ 190 # define M_NOBRACKET 'd' /* never angle bracket envelope route-addrs */ 191 /* 'D' /* CF: include Date: */ 192 # define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ 193 # define M_ESCFROM 'E' /* escape From lines to >From */ 194 # define M_FOPT 'f' /* mailer takes picky -f flag */ 195 /* 'F' /* CF: include From: or Resent-From: */ 196 # define M_NO_NULL_FROM 'g' /* sender of errors should be $g */ 197 # define M_HST_UPPER 'h' /* preserve host case distinction */ 198 # define M_PREHEAD 'H' /* MAIL11V3: preview headers */ 199 # define M_UDBENVELOPE 'i' /* do udbsender rewriting on envelope */ 200 # define M_INTERNAL 'I' /* SMTP to another sendmail site */ 201 # define M_UDBRECIPIENT 'j' /* do udbsender rewriting on recipient lines */ 202 # define M_NOLOOPCHECK 'k' /* don't check for loops in HELO command */ 203 # define M_LOCALMAILER 'l' /* delivery is to this host */ 204 # define M_LIMITS 'L' /* must enforce SMTP line limits */ 205 # define M_MUSER 'm' /* can handle multiple users at once */ 206 /* 'M' /* CF: include Message-Id: */ 207 # define M_NHDR 'n' /* don't insert From line */ 208 # define M_MANYSTATUS 'N' /* MAIL11V3: DATA returns multi-status */ 209 # define M_RUNASRCPT 'o' /* always run mailer as recipient */ 210 # define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ 211 /* 'P' /* CF: include Return-Path: */ 212 # define M_ROPT 'r' /* mailer takes picky -r flag */ 213 # define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */ 214 # define M_STRIPQ 's' /* strip quote chars from user/host */ 215 # define M_SPECIFIC_UID 'S' /* run as specific uid/gid */ 216 # define M_USR_UPPER 'u' /* preserve user case distinction */ 217 # define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ 218 # define M_CONTENT_LEN 'v' /* add Content-Length: header (SVr4) */ 219 /* 'V' /* UIUC: !-relativize all addresses */ 220 # define M_HASPWENT 'w' /* check for /etc/passwd entry */ 221 /* 'x' /* CF: include Full-Name: */ 222 # define M_XDOT 'X' /* use hidden-dot algorithm */ 223 # define M_TRYRULESET5 '5' /* use ruleset 5 after local aliasing */ 224 # define M_7BITS '7' /* use 7-bit path */ 225 # define M_8BITS '8' /* force "just send 8" behaviour */ 226 # define M_CHECKINCLUDE ':' /* check for :include: files */ 227 # define M_CHECKPROG '|' /* check for |program addresses */ 228 # define M_CHECKFILE '/' /* check for /file addresses */ 229 # define M_CHECKUDB '@' /* user can be user database key */ 230 231 EXTERN MAILER *Mailer[MAXMAILERS+1]; 232 233 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 234 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 235 EXTERN MAILER *FileMailer; /* ptr to *file* mailer */ 236 EXTERN MAILER *InclMailer; /* ptr to *include* mailer */ 237 /* 238 ** Header structure. 239 ** This structure is used internally to store header items. 240 */ 241 242 struct header 243 { 244 char *h_field; /* the name of the field */ 245 char *h_value; /* the value of that field */ 246 struct header *h_link; /* the next header */ 247 u_short h_flags; /* status bits, see below */ 248 BITMAP h_mflags; /* m_flags bits needed */ 249 }; 250 251 typedef struct header HDR; 252 253 /* 254 ** Header information structure. 255 ** Defined in conf.c, this struct declares the header fields 256 ** that have some magic meaning. 257 */ 258 259 struct hdrinfo 260 { 261 char *hi_field; /* the name of the field */ 262 u_short hi_flags; /* status bits, see below */ 263 }; 264 265 extern struct hdrinfo HdrInfo[]; 266 267 /* bits for h_flags and hi_flags */ 268 # define H_EOH 0x0001 /* this field terminates header */ 269 # define H_RCPT 0x0002 /* contains recipient addresses */ 270 # define H_DEFAULT 0x0004 /* if another value is found, drop this */ 271 # define H_RESENT 0x0008 /* this address is a "Resent-..." address */ 272 # define H_CHECK 0x0010 /* check h_mflags against m_flags */ 273 # define H_ACHECK 0x0020 /* ditto, but always (not just default) */ 274 # define H_FORCE 0x0040 /* force this field, even if default */ 275 # define H_TRACE 0x0080 /* this field contains trace information */ 276 # define H_FROM 0x0100 /* this is a from-type field */ 277 # define H_VALID 0x0200 /* this field has a validated value */ 278 # define H_RECEIPTTO 0x0400 /* this field has return receipt info */ 279 # define H_ERRORSTO 0x0800 /* this field has error address info */ 280 # define H_CTE 0x1000 /* this field is a content-transfer-encoding */ 281 # define H_CTYPE 0x2000 /* this is a content-type field */ 282 # define H_STRIPVAL 0x4000 /* strip value from header (Bcc:) */ 283 /* 284 ** Information about currently open connections to mailers, or to 285 ** hosts that we have looked up recently. 286 */ 287 288 # define MCI struct mailer_con_info 289 290 MCI 291 { 292 short mci_flags; /* flag bits, see below */ 293 short mci_errno; /* error number on last connection */ 294 short mci_herrno; /* h_errno from last DNS lookup */ 295 short mci_exitstat; /* exit status from last connection */ 296 short mci_state; /* SMTP state */ 297 long mci_maxsize; /* max size this server will accept */ 298 FILE *mci_in; /* input side of connection */ 299 FILE *mci_out; /* output side of connection */ 300 int mci_pid; /* process id of subordinate proc */ 301 char *mci_phase; /* SMTP phase string */ 302 struct mailer *mci_mailer; /* ptr to the mailer for this conn */ 303 char *mci_host; /* host name */ 304 char *mci_status; /* DSN status to be copied to addrs */ 305 time_t mci_lastuse; /* last usage time */ 306 }; 307 308 309 /* flag bits */ 310 #define MCIF_VALID 0x0001 /* this entry is valid */ 311 #define MCIF_TEMP 0x0002 /* don't cache this connection */ 312 #define MCIF_CACHED 0x0004 /* currently in open cache */ 313 #define MCIF_ESMTP 0x0008 /* this host speaks ESMTP */ 314 #define MCIF_EXPN 0x0010 /* EXPN command supported */ 315 #define MCIF_SIZE 0x0020 /* SIZE option supported */ 316 #define MCIF_8BITMIME 0x0040 /* BODY=8BITMIME supported */ 317 #define MCIF_7BIT 0x0080 /* strip this message to 7 bits */ 318 #define MCIF_MULTSTAT 0x0100 /* MAIL11V3: handles MULT status */ 319 #define MCIF_INHEADER 0x0200 /* currently outputing header */ 320 #define MCIF_CVT8TO7 0x0400 /* convert from 8 to 7 bits */ 321 #define MCIF_DSN 0x0800 /* DSN extension supported */ 322 #define MCIF_8BITOK 0x1000 /* OK to send 8 bit characters */ 323 324 /* states */ 325 #define MCIS_CLOSED 0 /* no traffic on this connection */ 326 #define MCIS_OPENING 1 /* sending initial protocol */ 327 #define MCIS_OPEN 2 /* open, initial protocol sent */ 328 #define MCIS_ACTIVE 3 /* message being sent */ 329 #define MCIS_QUITING 4 /* running quit protocol */ 330 #define MCIS_SSD 5 /* service shutting down */ 331 #define MCIS_ERROR 6 /* I/O error on connection */ 332 /* 333 ** Envelope structure. 334 ** This structure defines the message itself. There is usually 335 ** only one of these -- for the message that we originally read 336 ** and which is our primary interest -- but other envelopes can 337 ** be generated during processing. For example, error messages 338 ** will have their own envelope. 339 */ 340 341 # define ENVELOPE struct envelope 342 343 ENVELOPE 344 { 345 HDR *e_header; /* head of header list */ 346 long e_msgpriority; /* adjusted priority of this message */ 347 time_t e_ctime; /* time message appeared in the queue */ 348 char *e_to; /* the target person */ 349 char *e_receiptto; /* return receipt address */ 350 ADDRESS e_from; /* the person it is from */ 351 char *e_sender; /* e_from.q_paddr w comments stripped */ 352 char **e_fromdomain; /* the domain part of the sender */ 353 ADDRESS *e_sendqueue; /* list of message recipients */ 354 ADDRESS *e_errorqueue; /* the queue for error responses */ 355 long e_msgsize; /* size of the message in bytes */ 356 long e_flags; /* flags, see below */ 357 int e_nrcpts; /* number of recipients */ 358 short e_class; /* msg class (priority, junk, etc.) */ 359 short e_hopcount; /* number of times processed */ 360 short e_nsent; /* number of sends since checkpoint */ 361 short e_sendmode; /* message send mode */ 362 short e_errormode; /* error return mode */ 363 short e_timeoutclass; /* message timeout class */ 364 int (*e_puthdr)__P((MCI *, HDR *, ENVELOPE *)); 365 /* function to put header of message */ 366 int (*e_putbody)__P((MCI *, ENVELOPE *, char *)); 367 /* function to put body of message */ 368 struct envelope *e_parent; /* the message this one encloses */ 369 struct envelope *e_sibling; /* the next envelope of interest */ 370 char *e_bodytype; /* type of message body */ 371 FILE *e_dfp; /* temporary file */ 372 char *e_id; /* code for this entry in queue */ 373 FILE *e_xfp; /* transcript file */ 374 FILE *e_lockfp; /* the lock file for this message */ 375 char *e_message; /* error message */ 376 char *e_statmsg; /* stat msg (changes per delivery) */ 377 char *e_msgboundary; /* MIME-style message part boundary */ 378 char *e_origrcpt; /* original recipient (one only) */ 379 char *e_envid; /* envelope id from MAIL FROM: line */ 380 time_t e_dtime; /* time of last delivery attempt */ 381 int e_ntries; /* number of delivery attempts */ 382 dev_t e_dfdev; /* df file's device, for crash recov */ 383 ino_t e_dfino; /* df file's ino, for crash recovery */ 384 char *e_macro[256]; /* macro definitions */ 385 }; 386 387 /* values for e_flags */ 388 #define EF_OLDSTYLE 0x0000001 /* use spaces (not commas) in hdrs */ 389 #define EF_INQUEUE 0x0000002 /* this message is fully queued */ 390 #define EF_NO_BODY_RETN 0x0000004 /* omit message body on error */ 391 #define EF_CLRQUEUE 0x0000008 /* disk copy is no longer needed */ 392 #define EF_SENDRECEIPT 0x0000010 /* send a return receipt */ 393 #define EF_FATALERRS 0x0000020 /* fatal errors occured */ 394 #define EF_KEEPQUEUE 0x0000040 /* keep queue files always */ 395 #define EF_RESPONSE 0x0000080 /* this is an error or return receipt */ 396 #define EF_RESENT 0x0000100 /* this message is being forwarded */ 397 #define EF_VRFYONLY 0x0000200 /* verify only (don't expand aliases) */ 398 #define EF_WARNING 0x0000400 /* warning message has been sent */ 399 #define EF_QUEUERUN 0x0000800 /* this envelope is from queue */ 400 #define EF_GLOBALERRS 0x0001000 /* treat errors as global */ 401 #define EF_PM_NOTIFY 0x0002000 /* send return mail to postmaster */ 402 #define EF_METOO 0x0004000 /* send to me too */ 403 #define EF_LOGSENDER 0x0008000 /* need to log the sender */ 404 #define EF_NORECEIPT 0x0010000 /* suppress all return-receipts */ 405 #define EF_HAS8BIT 0x0020000 /* at least one 8-bit char in body */ 406 #define EF_NL_NOT_EOL 0x0040000 /* don't accept raw NL as EOLine */ 407 #define EF_CRLF_NOT_EOL 0x0080000 /* don't accept CR-LF as EOLine */ 408 #define EF_RET_PARAM 0x0100000 /* RCPT command had RET argument */ 409 #define EF_HAS_DF 0x0200000 /* set when df file is instantiated */ 410 411 EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ 412 /* 413 ** Message priority classes. 414 ** 415 ** The message class is read directly from the Priority: header 416 ** field in the message. 417 ** 418 ** CurEnv->e_msgpriority is the number of bytes in the message plus 419 ** the creation time (so that jobs ``tend'' to be ordered correctly), 420 ** adjusted by the message class, the number of recipients, and the 421 ** amount of time the message has been sitting around. This number 422 ** is used to order the queue. Higher values mean LOWER priority. 423 ** 424 ** Each priority class point is worth WkClassFact priority points; 425 ** each recipient is worth WkRecipFact priority points. Each time 426 ** we reprocess a message the priority is adjusted by WkTimeFact. 427 ** WkTimeFact should normally decrease the priority so that jobs 428 ** that have historically failed will be run later; thanks go to 429 ** Jay Lepreau at Utah for pointing out the error in my thinking. 430 ** 431 ** The "class" is this number, unadjusted by the age or size of 432 ** this message. Classes with negative representations will have 433 ** error messages thrown away if they are not local. 434 */ 435 436 struct priority 437 { 438 char *pri_name; /* external name of priority */ 439 int pri_val; /* internal value for same */ 440 }; 441 442 EXTERN struct priority Priorities[MAXPRIORITIES]; 443 EXTERN int NumPriorities; /* pointer into Priorities */ 444 /* 445 ** Rewrite rules. 446 */ 447 448 struct rewrite 449 { 450 char **r_lhs; /* pattern match */ 451 char **r_rhs; /* substitution value */ 452 struct rewrite *r_next;/* next in chain */ 453 }; 454 455 EXTERN struct rewrite *RewriteRules[MAXRWSETS]; 456 457 /* 458 ** Special characters in rewriting rules. 459 ** These are used internally only. 460 ** The COND* rules are actually used in macros rather than in 461 ** rewriting rules, but are given here because they 462 ** cannot conflict. 463 */ 464 465 /* left hand side items */ 466 # define MATCHZANY ((u_char)0220) /* match zero or more tokens */ 467 # define MATCHANY ((u_char)0221) /* match one or more tokens */ 468 # define MATCHONE ((u_char)0222) /* match exactly one token */ 469 # define MATCHCLASS ((u_char)0223) /* match one token in a class */ 470 # define MATCHNCLASS ((u_char)0224) /* match anything not in class */ 471 # define MATCHREPL ((u_char)0225) /* replacement on RHS for above */ 472 473 /* right hand side items */ 474 # define CANONNET ((u_char)0226) /* canonical net, next token */ 475 # define CANONHOST ((u_char)0227) /* canonical host, next token */ 476 # define CANONUSER ((u_char)0230) /* canonical user, next N tokens */ 477 # define CALLSUBR ((u_char)0231) /* call another rewriting set */ 478 479 /* conditionals in macros */ 480 # define CONDIF ((u_char)0232) /* conditional if-then */ 481 # define CONDELSE ((u_char)0233) /* conditional else */ 482 # define CONDFI ((u_char)0234) /* conditional fi */ 483 484 /* bracket characters for host name lookup */ 485 # define HOSTBEGIN ((u_char)0235) /* hostname lookup begin */ 486 # define HOSTEND ((u_char)0236) /* hostname lookup end */ 487 488 /* bracket characters for generalized lookup */ 489 # define LOOKUPBEGIN ((u_char)0205) /* generalized lookup begin */ 490 # define LOOKUPEND ((u_char)0206) /* generalized lookup end */ 491 492 /* macro substitution character */ 493 # define MACROEXPAND ((u_char)0201) /* macro expansion */ 494 # define MACRODEXPAND ((u_char)0202) /* deferred macro expansion */ 495 496 /* to make the code clearer */ 497 # define MATCHZERO CANONHOST 498 499 /* external <==> internal mapping table */ 500 struct metamac 501 { 502 char metaname; /* external code (after $) */ 503 u_char metaval; /* internal code (as above) */ 504 }; 505 /* 506 ** Name canonification short circuit. 507 ** 508 ** If the name server for a host is down, the process of trying to 509 ** canonify the name can hang. This is similar to (but alas, not 510 ** identical to) looking up the name for delivery. This stab type 511 ** caches the result of the name server lookup so we don't hang 512 ** multiple times. 513 */ 514 515 #define NAMECANON struct _namecanon 516 517 NAMECANON 518 { 519 short nc_errno; /* cached errno */ 520 short nc_herrno; /* cached h_errno */ 521 short nc_stat; /* cached exit status code */ 522 short nc_flags; /* flag bits */ 523 char *nc_cname; /* the canonical name */ 524 }; 525 526 /* values for nc_flags */ 527 #define NCF_VALID 0x0001 /* entry valid */ 528 /* 529 ** Mapping functions 530 ** 531 ** These allow arbitrary mappings in the config file. The idea 532 ** (albeit not the implementation) comes from IDA sendmail. 533 */ 534 535 # define MAPCLASS struct _mapclass 536 # define MAP struct _map 537 # define MAXMAPACTIONS 3 /* size of map_actions array */ 538 539 540 /* 541 ** An actual map. 542 */ 543 544 MAP 545 { 546 MAPCLASS *map_class; /* the class of this map */ 547 char *map_mname; /* name of this map */ 548 long map_mflags; /* flags, see below */ 549 char *map_file; /* the (nominal) filename */ 550 ARBPTR_T map_db1; /* the open database ptr */ 551 ARBPTR_T map_db2; /* an "extra" database pointer */ 552 char *map_keycolnm; /* key column name */ 553 char *map_valcolnm; /* value column name */ 554 u_char map_keycolno; /* key column number */ 555 u_char map_valcolno; /* value column number */ 556 char map_coldelim; /* column delimiter */ 557 char *map_app; /* to append to successful matches */ 558 char *map_domain; /* the (nominal) NIS domain */ 559 char *map_rebuild; /* program to run to do auto-rebuild */ 560 time_t map_mtime; /* last database modification time */ 561 short map_specificity; /* specificity of alaases */ 562 MAP *map_stack[MAXMAPSTACK]; /* list for stacked maps */ 563 short map_return[MAXMAPACTIONS]; /* return bitmaps for stacked maps */ 564 }; 565 566 /* bit values for map_mflags */ 567 # define MF_VALID 0x00000001 /* this entry is valid */ 568 # define MF_INCLNULL 0x00000002 /* include null byte in key */ 569 # define MF_OPTIONAL 0x00000004 /* don't complain if map not found */ 570 # define MF_NOFOLDCASE 0x00000008 /* don't fold case in keys */ 571 # define MF_MATCHONLY 0x00000010 /* don't use the map value */ 572 # define MF_OPEN 0x00000020 /* this entry is open */ 573 # define MF_WRITABLE 0x00000040 /* open for writing */ 574 # define MF_ALIAS 0x00000080 /* this is an alias file */ 575 # define MF_TRY0NULL 0x00000100 /* try with no null byte */ 576 # define MF_TRY1NULL 0x00000200 /* try with the null byte */ 577 # define MF_LOCKED 0x00000400 /* this map is currently locked */ 578 # define MF_ALIASWAIT 0x00000800 /* alias map in aliaswait state */ 579 # define MF_IMPL_HASH 0x00001000 /* implicit: underlying hash database */ 580 # define MF_IMPL_NDBM 0x00002000 /* implicit: underlying NDBM database */ 581 # define MF_UNSAFEDB 0x00004000 /* this map is world writable */ 582 # define MF_APPEND 0x00008000 /* append new entry on rebuiled */ 583 584 /* indices for map_actions */ 585 # define MA_NOTFOUND 0 /* member map returned "not found" */ 586 # define MA_UNAVAIL 1 /* member map is not available */ 587 # define MA_TRYAGAIN 2 /* member map returns temp failure */ 588 589 /* 590 ** The class of a map -- essentially the functions to call 591 */ 592 593 MAPCLASS 594 { 595 char *map_cname; /* name of this map class */ 596 char *map_ext; /* extension for database file */ 597 short map_cflags; /* flag bits, see below */ 598 bool (*map_parse)__P((MAP *, char *)); 599 /* argument parsing function */ 600 char *(*map_lookup)__P((MAP *, char *, char **, int *)); 601 /* lookup function */ 602 void (*map_store)__P((MAP *, char *, char *)); 603 /* store function */ 604 bool (*map_open)__P((MAP *, int)); 605 /* open function */ 606 void (*map_close)__P((MAP *)); 607 /* close function */ 608 }; 609 610 /* bit values for map_cflags */ 611 #define MCF_ALIASOK 0x0001 /* can be used for aliases */ 612 #define MCF_ALIASONLY 0x0002 /* usable only for aliases */ 613 #define MCF_REBUILDABLE 0x0004 /* can rebuild alias files */ 614 #define MCF_OPTFILE 0x0008 /* file name is optional */ 615 /* 616 ** Symbol table definitions 617 */ 618 619 struct symtab 620 { 621 char *s_name; /* name to be entered */ 622 char s_type; /* general type (see below) */ 623 struct symtab *s_next; /* pointer to next in chain */ 624 union 625 { 626 BITMAP sv_class; /* bit-map of word classes */ 627 ADDRESS *sv_addr; /* pointer to address header */ 628 MAILER *sv_mailer; /* pointer to mailer */ 629 char *sv_alias; /* alias */ 630 MAPCLASS sv_mapclass; /* mapping function class */ 631 MAP sv_map; /* mapping function */ 632 char *sv_hostsig; /* host signature */ 633 MCI sv_mci; /* mailer connection info */ 634 NAMECANON sv_namecanon; /* canonical name cache */ 635 int sv_macro; /* macro name => id mapping */ 636 int sv_ruleset; /* ruleset index */ 637 } s_value; 638 }; 639 640 typedef struct symtab STAB; 641 642 /* symbol types */ 643 # define ST_UNDEF 0 /* undefined type */ 644 # define ST_CLASS 1 /* class map */ 645 # define ST_ADDRESS 2 /* an address in parsed format */ 646 # define ST_MAILER 3 /* a mailer header */ 647 # define ST_ALIAS 4 /* an alias */ 648 # define ST_MAPCLASS 5 /* mapping function class */ 649 # define ST_MAP 6 /* mapping function */ 650 # define ST_HOSTSIG 7 /* host signature */ 651 # define ST_NAMECANON 8 /* cached canonical name */ 652 # define ST_MACRO 9 /* macro name to id mapping */ 653 # define ST_RULESET 10 /* ruleset index */ 654 # define ST_MCI 16 /* mailer connection info (offset) */ 655 656 # define s_class s_value.sv_class 657 # define s_address s_value.sv_addr 658 # define s_mailer s_value.sv_mailer 659 # define s_alias s_value.sv_alias 660 # define s_mci s_value.sv_mci 661 # define s_mapclass s_value.sv_mapclass 662 # define s_hostsig s_value.sv_hostsig 663 # define s_map s_value.sv_map 664 # define s_namecanon s_value.sv_namecanon 665 # define s_macro s_value.sv_macro 666 # define s_ruleset s_value.sv_ruleset 667 668 extern STAB *stab __P((char *, int, int)); 669 extern void stabapply __P((void (*)(STAB *, int), int)); 670 671 /* opcodes to stab */ 672 # define ST_FIND 0 /* find entry */ 673 # define ST_ENTER 1 /* enter if not there */ 674 /* 675 ** STRUCT EVENT -- event queue. 676 ** 677 ** Maintained in sorted order. 678 ** 679 ** We store the pid of the process that set this event to insure 680 ** that when we fork we will not take events intended for the parent. 681 */ 682 683 struct event 684 { 685 time_t ev_time; /* time of the function call */ 686 void (*ev_func)__P((int)); 687 /* function to call */ 688 int ev_arg; /* argument to ev_func */ 689 int ev_pid; /* pid that set this event */ 690 struct event *ev_link; /* link to next item */ 691 }; 692 693 typedef struct event EVENT; 694 695 EXTERN EVENT *EventQueue; /* head of event queue */ 696 /* 697 ** Operation, send, error, and MIME modes 698 ** 699 ** The operation mode describes the basic operation of sendmail. 700 ** This can be set from the command line, and is "send mail" by 701 ** default. 702 ** 703 ** The send mode tells how to send mail. It can be set in the 704 ** configuration file. It's setting determines how quickly the 705 ** mail will be delivered versus the load on your system. If the 706 ** -v (verbose) flag is given, it will be forced to SM_DELIVER 707 ** mode. 708 ** 709 ** The error mode tells how to return errors. 710 */ 711 712 EXTERN char OpMode; /* operation mode, see below */ 713 714 #define MD_DELIVER 'm' /* be a mail sender */ 715 #define MD_SMTP 's' /* run SMTP on standard input */ 716 #define MD_ARPAFTP 'a' /* obsolete ARPANET mode (Grey Book) */ 717 #define MD_DAEMON 'd' /* run as a daemon */ 718 #define MD_VERIFY 'v' /* verify: don't collect or deliver */ 719 #define MD_TEST 't' /* test mode: resolve addrs only */ 720 #define MD_INITALIAS 'i' /* initialize alias database */ 721 #define MD_PRINT 'p' /* print the queue */ 722 #define MD_FREEZE 'z' /* freeze the configuration file */ 723 724 725 /* values for e_sendmode -- send modes */ 726 #define SM_DELIVER 'i' /* interactive delivery */ 727 #define SM_FORK 'b' /* deliver in background */ 728 #define SM_QUEUE 'q' /* queue, don't deliver */ 729 #define SM_VERIFY 'v' /* verify only (used internally) */ 730 731 /* used only as a parameter to sendall */ 732 #define SM_DEFAULT '\0' /* unspecified, use SendMode */ 733 734 735 /* values for e_errormode -- error handling modes */ 736 #define EM_PRINT 'p' /* print errors */ 737 #define EM_MAIL 'm' /* mail back errors */ 738 #define EM_WRITE 'w' /* write back errors */ 739 #define EM_BERKNET 'e' /* special berknet processing */ 740 #define EM_QUIET 'q' /* don't print messages (stat only) */ 741 742 743 /* MIME processing mode */ 744 EXTERN int MimeMode; 745 746 /* bit values for MimeMode */ 747 #define MM_CVTMIME 0x0001 /* convert 8 to 7 bit MIME */ 748 #define MM_PASS8BIT 0x0002 /* just send 8 bit data blind */ 749 #define MM_MIME8BIT 0x0004 /* convert 8-bit data to MIME */ 750 751 /* queue sorting order algorithm */ 752 EXTERN int QueueSortOrder; 753 754 #define QS_BYPRIORITY 0 /* sort by message priority */ 755 #define QS_BYHOST 1 /* sort by first host name */ 756 757 758 /* how to handle messages without any recipient addresses */ 759 EXTERN int NoRecipientAction; 760 761 #define NRA_NO_ACTION 0 /* just leave it as is */ 762 #define NRA_ADD_TO 1 /* add To: header */ 763 #define NRA_ADD_APPARENTLY_TO 2 /* add Apparently-To: header */ 764 #define NRA_ADD_BCC 3 /* add empty Bcc: header */ 765 #define NRA_ADD_TO_UNDISCLOSED 4 /* add To: undisclosed:; header */ 766 /* 767 ** Additional definitions 768 */ 769 770 771 /* 772 ** Privacy flags 773 ** These are bit values for the PrivacyFlags word. 774 */ 775 776 #define PRIV_PUBLIC 0 /* what have I got to hide? */ 777 #define PRIV_NEEDMAILHELO 0x0001 /* insist on HELO for MAIL, at least */ 778 #define PRIV_NEEDEXPNHELO 0x0002 /* insist on HELO for EXPN */ 779 #define PRIV_NEEDVRFYHELO 0x0004 /* insist on HELO for VRFY */ 780 #define PRIV_NOEXPN 0x0008 /* disallow EXPN command entirely */ 781 #define PRIV_NOVRFY 0x0010 /* disallow VRFY command entirely */ 782 #define PRIV_AUTHWARNINGS 0x0020 /* flag possible authorization probs */ 783 #define PRIV_NORECEIPTS 0x0040 /* disallow return receipts */ 784 #define PRIV_RESTRICTMAILQ 0x1000 /* restrict mailq command */ 785 #define PRIV_RESTRICTQRUN 0x2000 /* restrict queue run */ 786 #define PRIV_GOAWAY 0x0fff /* don't give no info, anyway, anyhow */ 787 788 /* struct defining such things */ 789 struct prival 790 { 791 char *pv_name; /* name of privacy flag */ 792 int pv_flag; /* numeric level */ 793 }; 794 795 796 /* 797 ** Flags passed to remotename, parseaddr, allocaddr, and buildaddr. 798 */ 799 800 #define RF_SENDERADDR 0x001 /* this is a sender address */ 801 #define RF_HEADERADDR 0x002 /* this is a header address */ 802 #define RF_CANONICAL 0x004 /* strip comment information */ 803 #define RF_ADDDOMAIN 0x008 /* OK to do domain extension */ 804 #define RF_COPYPARSE 0x010 /* copy parsed user & host */ 805 #define RF_COPYPADDR 0x020 /* copy print address */ 806 #define RF_COPYALL (RF_COPYPARSE|RF_COPYPADDR) 807 #define RF_COPYNONE 0 808 809 810 /* 811 ** Flags passed to safefile. 812 */ 813 814 #define SFF_ANYFILE 0 /* no special restrictions */ 815 #define SFF_MUSTOWN 0x0001 /* user must own this file */ 816 #define SFF_NOSLINK 0x0002 /* file cannot be a symbolic link */ 817 #define SFF_ROOTOK 0x0004 /* ok for root to own this file */ 818 #define SFF_NOPATHCHECK 0x0010 /* don't bother checking dir path */ 819 #define SFF_SETUIDOK 0x0020 /* setuid files are ok */ 820 #define SFF_CREAT 0x0040 /* ok to create file if necessary */ 821 #define SFF_REGONLY 0x0080 /* regular files only */ 822 823 /* flags that are actually specific to safefopen */ 824 #define SFF_OPENASROOT 0x1000 /* open as root instead of real user */ 825 826 827 /* 828 ** Flags passed to mime8to7. 829 */ 830 831 #define M87F_OUTER 0 /* outer context */ 832 #define M87F_NO8BIT 0x0001 /* can't have 8-bit in this section */ 833 834 835 /* 836 ** Regular UNIX sockaddrs are too small to handle ISO addresses, so 837 ** we are forced to declare a supertype here. 838 */ 839 840 union bigsockaddr 841 { 842 struct sockaddr sa; /* general version */ 843 #ifdef NETUNIX 844 struct sockaddr_un sunix; /* UNIX family */ 845 #endif 846 #ifdef NETINET 847 struct sockaddr_in sin; /* INET family */ 848 #endif 849 #ifdef NETISO 850 struct sockaddr_iso siso; /* ISO family */ 851 #endif 852 #ifdef NETNS 853 struct sockaddr_ns sns; /* XNS family */ 854 #endif 855 #ifdef NETX25 856 struct sockaddr_x25 sx25; /* X.25 family */ 857 #endif 858 }; 859 860 #define SOCKADDR union bigsockaddr 861 862 863 /* 864 ** Vendor codes 865 ** 866 ** Vendors can customize sendmail to add special behaviour, 867 ** generally for back compatibility. Ideally, this should 868 ** be set up in the .cf file using the "V" command. However, 869 ** it's quite reasonable for some vendors to want the default 870 ** be their old version; this can be set using 871 ** -DVENDOR_DEFAULT=VENDOR_xxx 872 ** in the Makefile. 873 ** 874 ** Vendors should apply to sendmail@CS.Berkeley.EDU for 875 ** unique vendor codes. 876 */ 877 878 #define VENDOR_BERKELEY 1 /* Berkeley-native configuration file */ 879 #define VENDOR_SUN 2 /* Sun-native configuration file */ 880 881 EXTERN int VendorCode; /* vendor-specific operation enhancements */ 882 /* 883 ** Global variables. 884 */ 885 886 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 887 EXTERN bool MeToo; /* send to the sender also */ 888 EXTERN bool IgnrDot; /* don't let dot end messages */ 889 EXTERN bool SaveFrom; /* save leading "From" lines */ 890 EXTERN bool Verbose; /* set if blow-by-blow desired */ 891 EXTERN bool GrabTo; /* if set, get recipients from msg */ 892 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 893 EXTERN bool HoldErrs; /* only output errors to transcript */ 894 EXTERN bool NoConnect; /* don't connect to non-local mailers */ 895 EXTERN bool SuperSafe; /* be extra careful, even if expensive */ 896 EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ 897 EXTERN bool AutoRebuild; /* auto-rebuild the alias database as needed */ 898 EXTERN bool CheckAliases; /* parse addresses during newaliases */ 899 EXTERN bool NoAlias; /* suppress aliasing */ 900 EXTERN bool UseNameServer; /* using DNS -- interpret h_errno & MX RRs */ 901 EXTERN bool UseHesiod; /* using Hesiod -- interpret Hesiod errors */ 902 EXTERN bool SevenBitInput; /* force 7-bit data on input */ 903 EXTERN bool HasEightBits; /* has at least one eight bit input byte */ 904 EXTERN time_t SafeAlias; /* interval to wait until @:@ in alias file */ 905 EXTERN FILE *InChannel; /* input connection */ 906 EXTERN FILE *OutChannel; /* output connection */ 907 EXTERN uid_t RealUid; /* when Daemon, real uid of caller */ 908 EXTERN gid_t RealGid; /* when Daemon, real gid of caller */ 909 EXTERN uid_t DefUid; /* default uid to run as */ 910 EXTERN gid_t DefGid; /* default gid to run as */ 911 EXTERN char *DefUser; /* default user to run as (from DefUid) */ 912 EXTERN int OldUmask; /* umask when sendmail starts up */ 913 EXTERN int Errors; /* set if errors (local to single pass) */ 914 EXTERN int ExitStat; /* exit status code */ 915 EXTERN int LineNumber; /* line number in current input */ 916 EXTERN int LogLevel; /* level of logging to perform */ 917 EXTERN int FileMode; /* mode on files */ 918 EXTERN int QueueLA; /* load average starting forced queueing */ 919 EXTERN int RefuseLA; /* load average refusing connections are */ 920 EXTERN int CurrentLA; /* current load average */ 921 EXTERN long QueueFactor; /* slope of queue function */ 922 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 923 EXTERN char *HelpFile; /* location of SMTP help file */ 924 EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ 925 EXTERN char *StatFile; /* location of statistics summary */ 926 EXTERN char *QueueDir; /* location of queue directory */ 927 EXTERN char *FileName; /* name to print on error messages */ 928 EXTERN char *SmtpPhase; /* current phase in SMTP processing */ 929 EXTERN char *MyHostName; /* name of this host for SMTP messages */ 930 EXTERN char *RealHostName; /* name of host we are talking to */ 931 EXTERN SOCKADDR RealHostAddr; /* address of host we are talking to */ 932 EXTERN char *CurHostName; /* current host we are dealing with */ 933 EXTERN jmp_buf TopFrame; /* branch-to-top-of-loop-on-error frame */ 934 EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ 935 EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ 936 EXTERN bool SendMIMEErrors; /* send error messages in MIME format */ 937 EXTERN bool MatchGecos; /* look for user names in gecos field */ 938 EXTERN bool UseErrorsTo; /* use Errors-To: header (back compat) */ 939 EXTERN bool TryNullMXList; /* if we are the best MX, try host directly */ 940 EXTERN bool InChild; /* true if running in an SMTP subprocess */ 941 EXTERN bool DisConnected; /* running with OutChannel redirected to xf */ 942 EXTERN bool ColonOkInAddr; /* single colon legal in address */ 943 EXTERN bool NoMXforCanon; /* don't use MX records when canonifying */ 944 EXTERN char SpaceSub; /* substitution for <lwsp> */ 945 EXTERN int PrivacyFlags; /* privacy flags */ 946 EXTERN char *ConfFile; /* location of configuration file [conf.c] */ 947 extern char *PidFile; /* location of proc id file [conf.c] */ 948 extern ADDRESS NullAddress; /* a null (template) address [main.c] */ 949 EXTERN long WkClassFact; /* multiplier for message class -> priority */ 950 EXTERN long WkRecipFact; /* multiplier for # of recipients -> priority */ 951 EXTERN long WkTimeFact; /* priority offset each time this job is run */ 952 EXTERN char *UdbSpec; /* user database source spec */ 953 EXTERN int MaxHopCount; /* max # of hops until bounce */ 954 EXTERN int ConfigLevel; /* config file level */ 955 EXTERN char *TimeZoneSpec; /* override time zone specification */ 956 EXTERN char *ForwardPath; /* path to search for .forward files */ 957 EXTERN long MinBlocksFree; /* min # of blocks free on queue fs */ 958 EXTERN char *FallBackMX; /* fall back MX host */ 959 EXTERN long MaxMessageSize; /* advertised max size we will accept */ 960 EXTERN time_t MaxHostStatAge; /* max age of cached host status info */ 961 EXTERN time_t MinQueueAge; /* min delivery interval */ 962 EXTERN time_t DialDelay; /* delay between dial-on-demand tries */ 963 EXTERN char *SafeFileEnv; /* chroot location for file delivery */ 964 EXTERN char *ServiceSwitchFile; /* backup service switch */ 965 EXTERN char *DefaultCharSet; /* default character set for MIME */ 966 EXTERN int DeliveryNiceness; /* how nice to be during delivery */ 967 EXTERN char *PostMasterCopy; /* address to get errs cc's */ 968 EXTERN int CheckpointInterval; /* queue file checkpoint interval */ 969 EXTERN bool DontPruneRoutes; /* don't prune source routes */ 970 EXTERN int MaxMciCache; /* maximum entries in MCI cache */ 971 EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ 972 EXTERN char *QueueLimitRecipient; /* limit queue runs to this recipient */ 973 EXTERN char *QueueLimitSender; /* limit queue runs to this sender */ 974 EXTERN char *QueueLimitId; /* limit queue runs to this id */ 975 EXTERN FILE *TrafficLogFile; /* file in which to log all traffic */ 976 extern int errno; 977 978 979 /* 980 ** Timeouts 981 ** 982 ** Indicated values are the MINIMUM per RFC 1123 section 5.3.2. 983 */ 984 985 EXTERN struct 986 { 987 /* RFC 1123-specified timeouts [minimum value] */ 988 time_t to_initial; /* initial greeting timeout [5m] */ 989 time_t to_mail; /* MAIL command [5m] */ 990 time_t to_rcpt; /* RCPT command [5m] */ 991 time_t to_datainit; /* DATA initiation [2m] */ 992 time_t to_datablock; /* DATA block [3m] */ 993 time_t to_datafinal; /* DATA completion [10m] */ 994 time_t to_nextcommand; /* next command [5m] */ 995 /* following timeouts are not mentioned in RFC 1123 */ 996 time_t to_rset; /* RSET command */ 997 time_t to_helo; /* HELO command */ 998 time_t to_quit; /* QUIT command */ 999 time_t to_miscshort; /* misc short commands (NOOP, VERB, etc) */ 1000 time_t to_ident; /* IDENT protocol requests */ 1001 time_t to_fileopen; /* opening :include: and .forward files */ 1002 /* following are per message */ 1003 time_t to_q_return[MAXTOCLASS]; /* queue return timeouts */ 1004 time_t to_q_warning[MAXTOCLASS]; /* queue warning timeouts */ 1005 } TimeOuts; 1006 1007 /* timeout classes for return and warning timeouts */ 1008 # define TOC_NORMAL 0 /* normal delivery */ 1009 # define TOC_URGENT 1 /* urgent delivery */ 1010 # define TOC_NONURGENT 2 /* non-urgent delivery */ 1011 1012 1013 /* 1014 ** Trace information 1015 */ 1016 1017 /* trace vector and macros for debugging flags */ 1018 EXTERN u_char tTdvect[100]; 1019 # define tTd(flag, level) (tTdvect[flag] >= level) 1020 # define tTdlevel(flag) (tTdvect[flag]) 1021 /* 1022 ** Miscellaneous information. 1023 */ 1024 1025 1026 1027 /* 1028 ** Some in-line functions 1029 */ 1030 1031 /* set exit status */ 1032 #define setstat(s) { \ 1033 if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ 1034 ExitStat = s; \ 1035 } 1036 1037 /* make a copy of a string */ 1038 #define newstr(s) strcpy(xalloc(strlen(s) + 1), s) 1039 1040 #define STRUCTCOPY(s, d) d = s 1041 1042 1043 /* 1044 ** Declarations of useful functions 1045 */ 1046 1047 extern ADDRESS *parseaddr __P((char *, ADDRESS *, int, int, char **, ENVELOPE *)); 1048 extern char *xalloc __P((int)); 1049 extern bool sameaddr __P((ADDRESS *, ADDRESS *)); 1050 extern FILE *dfopen __P((char *, int, int)); 1051 extern EVENT *setevent __P((time_t, void(*)(), int)); 1052 extern char *sfgets __P((char *, int, FILE *, time_t, char *)); 1053 extern char *queuename __P((ENVELOPE *, int)); 1054 extern time_t curtime __P(()); 1055 extern bool transienterror __P((int)); 1056 extern const char *errstring __P((int)); 1057 extern void expand __P((char *, char *, size_t, ENVELOPE *)); 1058 extern void define __P((int, char *, ENVELOPE *)); 1059 extern char *macvalue __P((int, ENVELOPE *)); 1060 extern char *macname __P((int)); 1061 extern int macid __P((char *, char **)); 1062 extern char **prescan __P((char *, int, char[], int, char **, char *)); 1063 extern int rewrite __P((char **, int, int, ENVELOPE *)); 1064 extern char *fgetfolded __P((char *, int, FILE *)); 1065 extern ADDRESS *recipient __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 1066 extern ENVELOPE *newenvelope __P((ENVELOPE *, ENVELOPE *)); 1067 extern void dropenvelope __P((ENVELOPE *)); 1068 extern void clearenvelope __P((ENVELOPE *, bool)); 1069 extern char *username __P(()); 1070 extern MCI *mci_get __P((char *, MAILER *)); 1071 extern char *pintvl __P((time_t, bool)); 1072 extern char *map_rewrite __P((MAP *, char *, int, char **)); 1073 extern ADDRESS *getctladdr __P((ADDRESS *)); 1074 extern char *anynet_ntoa __P((SOCKADDR *)); 1075 extern char *remotename __P((char *, MAILER *, int, int *, ENVELOPE *)); 1076 extern bool shouldqueue __P((long, time_t)); 1077 extern bool lockfile __P((int, char *, char *, int)); 1078 extern char *hostsignature __P((MAILER *, char *, ENVELOPE *)); 1079 extern void openxscript __P((ENVELOPE *)); 1080 extern void closexscript __P((ENVELOPE *)); 1081 extern sigfunc_t setsignal __P((int, sigfunc_t)); 1082 extern char *shortenstring __P((char *, int)); 1083 extern bool usershellok __P((char *)); 1084 extern void commaize __P((HDR *, char *, bool, MCI *, ENVELOPE *)); 1085 extern char *hvalue __P((char *, HDR *)); 1086 extern char *defcharset __P((ENVELOPE *)); 1087 extern bool emptyaddr __P((ADDRESS *)); 1088 extern int sendtolist __P((char *, ADDRESS *, ADDRESS **, int, ENVELOPE *)); 1089 extern bool wordinclass __P((char *, int)); 1090 extern char *denlstring __P((char *, bool, bool)); 1091 extern void printaddr __P((ADDRESS *, bool)); 1092 extern void makelower __P((char *)); 1093 extern void rebuildaliases __P((MAP *, bool)); 1094 extern void readaliases __P((MAP *, FILE *, bool, bool)); 1095 extern void finis __P(()); 1096 extern void clrevent __P((EVENT *)); 1097 extern void setsender __P((char *, ENVELOPE *, char **, bool)); 1098 extern FILE *safefopen __P((char *, int, int, int)); 1099 extern struct hostent *sm_gethostbyname __P((char *)); 1100 extern struct hostent *sm_gethostbyaddr __P((char *, int, int)); 1101 extern struct passwd *sm_getpwnam __P((char *)); 1102 extern struct passwd *sm_getpwuid __P((UID_T)); 1103 1104 /* ellipsis is a different case though */ 1105 #ifdef __STDC__ 1106 extern void auth_warning(ENVELOPE *, const char *, ...); 1107 extern void syserr(const char *, ...); 1108 extern void usrerr(const char *, ...); 1109 extern void message(const char *, ...); 1110 extern void nmessage(const char *, ...); 1111 #else 1112 extern void auth_warning(); 1113 extern void syserr(); 1114 extern void usrerr(); 1115 extern void message(); 1116 extern void nmessage(); 1117 #endif 1118