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 8.86 (Berkeley) 02/11/95 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 8.86 02/11/95"; 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 <sysexits.h> 31 # include <string.h> 32 # include <time.h> 33 # include <errno.h> 34 35 # include "conf.h" 36 # include "useful.h" 37 38 # ifdef LOG 39 # include <syslog.h> 40 # endif /* LOG */ 41 42 # ifdef DAEMON 43 # include <sys/socket.h> 44 # endif 45 # ifdef NETUNIX 46 # include <sys/un.h> 47 # endif 48 # ifdef NETINET 49 # include <netinet/in.h> 50 # endif 51 # ifdef NETISO 52 # include <netiso/iso.h> 53 # endif 54 # ifdef NETNS 55 # include <netns/ns.h> 56 # endif 57 # ifdef NETX25 58 # include <netccitt/x25.h> 59 # endif 60 61 62 63 64 /* 65 ** Data structure for bit maps. 66 ** 67 ** Each bit in this map can be referenced by an ascii character. 68 ** This is 256 possible bits, or 32 8-bit bytes. 69 */ 70 71 #define BITMAPBYTES 32 /* number of bytes in a bit map */ 72 #define BYTEBITS 8 /* number of bits in a byte */ 73 74 /* internal macros */ 75 #define _BITWORD(bit) (bit / (BYTEBITS * sizeof (int))) 76 #define _BITBIT(bit) (1 << (bit % (BYTEBITS * sizeof (int)))) 77 78 typedef int BITMAP[BITMAPBYTES / sizeof (int)]; 79 80 /* test bit number N */ 81 #define bitnset(bit, map) ((map)[_BITWORD(bit)] & _BITBIT(bit)) 82 83 /* set bit number N */ 84 #define setbitn(bit, map) (map)[_BITWORD(bit)] |= _BITBIT(bit) 85 86 /* clear bit number N */ 87 #define clrbitn(bit, map) (map)[_BITWORD(bit)] &= ~_BITBIT(bit) 88 89 /* clear an entire bit map */ 90 #define clrbitmap(map) bzero((char *) map, BITMAPBYTES) 91 /* 92 ** Address structure. 93 ** Addresses are stored internally in this structure. 94 */ 95 96 struct address 97 { 98 char *q_paddr; /* the printname for the address */ 99 char *q_user; /* user name */ 100 char *q_ruser; /* real user name, or NULL if q_user */ 101 char *q_host; /* host name */ 102 struct mailer *q_mailer; /* mailer to use */ 103 u_long q_flags; /* status flags, see below */ 104 uid_t q_uid; /* user-id of receiver (if known) */ 105 gid_t q_gid; /* group-id of receiver (if known) */ 106 char *q_home; /* home dir (local mailer only) */ 107 char *q_fullname; /* full name if known */ 108 struct address *q_next; /* chain */ 109 struct address *q_alias; /* address this results from */ 110 char *q_owner; /* owner of q_alias */ 111 struct address *q_tchain; /* temporary use chain */ 112 char *q_orcpt; /* ORCPT parameter from RCPT TO: line */ 113 char *q_status; /* status code for DSNs */ 114 char *q_fstatus; /* final status code for DSNs */ 115 char *q_rstatus; /* remote status message for DSNs */ 116 time_t q_statdate; /* date of status messages */ 117 char *q_statmta; /* MTA generating q_rstatus */ 118 }; 119 120 typedef struct address ADDRESS; 121 122 # define QDONTSEND 0x00000001 /* don't send to this address */ 123 # define QBADADDR 0x00000002 /* this address is verified bad */ 124 # define QGOODUID 0x00000004 /* the q_uid q_gid fields are good */ 125 # define QPRIMARY 0x00000008 /* set from argv */ 126 # define QQUEUEUP 0x00000010 /* queue for later transmission */ 127 # define QSENT 0x00000020 /* has been successfully delivered */ 128 # define QNOTREMOTE 0x00000040 /* address not for remote forwarding */ 129 # define QSELFREF 0x00000080 /* this address references itself */ 130 # define QVERIFIED 0x00000100 /* verified, but not expanded */ 131 # define QREPORT 0x00000200 /* report this addr in return message */ 132 # define QBOGUSSHELL 0x00000400 /* user has no valid shell listed */ 133 # define QUNSAFEADDR 0x00000800 /* address aquired via unsafe path */ 134 # define QPINGONSUCCESS 0x00001000 /* give return on successful delivery */ 135 # define QPINGONFAILURE 0x00002000 /* give return on failure */ 136 # define QPINGONDELAY 0x00004000 /* give return on message delay */ 137 # define QHAS_RET_PARAM 0x00008000 /* RCPT command had RET argument */ 138 # define QRET_HDRS 0x00010000 /* don't return message body */ 139 # define QRELAYED 0x00020000 /* relayed to non-DSN aware mailer */ 140 141 # define NULLADDR ((ADDRESS *) NULL) 142 /* 143 ** Mailer definition structure. 144 ** Every mailer known to the system is declared in this 145 ** structure. It defines the pathname of the mailer, some 146 ** flags associated with it, and the argument vector to 147 ** pass to it. The flags are defined in conf.c 148 ** 149 ** The argument vector is expanded before actual use. All 150 ** words except the first are passed through the macro 151 ** processor. 152 */ 153 154 struct mailer 155 { 156 char *m_name; /* symbolic name of this mailer */ 157 char *m_mailer; /* pathname of the mailer to use */ 158 char *m_mtatype; /* type of this MTA */ 159 char *m_addrtype; /* type for addresses */ 160 char *m_diagtype; /* type for diagnostics */ 161 BITMAP m_flags; /* status flags, see below */ 162 short m_mno; /* mailer number internally */ 163 char **m_argv; /* template argument vector */ 164 short m_sh_rwset; /* rewrite set: sender header addresses */ 165 short m_se_rwset; /* rewrite set: sender envelope addresses */ 166 short m_rh_rwset; /* rewrite set: recipient header addresses */ 167 short m_re_rwset; /* rewrite set: recipient envelope addresses */ 168 char *m_eol; /* end of line string */ 169 long m_maxsize; /* size limit on message to this mailer */ 170 int m_linelimit; /* max # characters per line */ 171 char *m_execdir; /* directory to chdir to before execv */ 172 uid_t m_uid; /* UID to run as */ 173 gid_t m_gid; /* GID to run as */ 174 char *m_defcharset; /* default character set */ 175 }; 176 177 typedef struct mailer MAILER; 178 179 /* bits for m_flags */ 180 # define M_ESMTP 'a' /* run Extended SMTP protocol */ 181 # define M_ALIASABLE 'A' /* user can be LHS of an alias */ 182 # define M_BLANKEND 'b' /* ensure blank line at end of message */ 183 # define M_NOCOMMENT 'c' /* don't include comment part of address */ 184 # define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ 185 # define M_NOBRACKET 'd' /* never angle bracket envelope route-addrs */ 186 /* 'D' /* CF: include Date: */ 187 # define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ 188 # define M_ESCFROM 'E' /* escape From lines to >From */ 189 # define M_FOPT 'f' /* mailer takes picky -f flag */ 190 /* 'F' /* CF: include From: or Resent-From: */ 191 # define M_NO_NULL_FROM 'g' /* sender of errors should be $g */ 192 # define M_HST_UPPER 'h' /* preserve host case distinction */ 193 # define M_PREHEAD 'H' /* MAIL11V3: preview headers */ 194 # define M_UDBENVELOPE 'i' /* do udbsender rewriting on envelope */ 195 # define M_INTERNAL 'I' /* SMTP to another sendmail site */ 196 # define M_NOLOOPCHECK 'k' /* don't check for loops in HELO command */ 197 # define M_LOCALMAILER 'l' /* delivery is to this host */ 198 # define M_LIMITS 'L' /* must enforce SMTP line limits */ 199 # define M_MUSER 'm' /* can handle multiple users at once */ 200 /* 'M' /* CF: include Message-Id: */ 201 # define M_NHDR 'n' /* don't insert From line */ 202 # define M_MANYSTATUS 'N' /* MAIL11V3: DATA returns multi-status */ 203 # define M_RUNASRCPT 'o' /* always run mailer as recipient */ 204 # define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ 205 /* 'P' /* CF: include Return-Path: */ 206 # define M_ROPT 'r' /* mailer takes picky -r flag */ 207 # define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */ 208 # define M_STRIPQ 's' /* strip quote chars from user/host */ 209 # define M_SPECIFIC_UID 'S' /* run as specific uid/gid */ 210 # define M_USR_UPPER 'u' /* preserve user case distinction */ 211 # define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ 212 /* 'V' /* UIUC: !-relativize all addresses */ 213 # define M_HASPWENT 'w' /* check for /etc/passwd entry */ 214 /* 'x' /* CF: include Full-Name: */ 215 # define M_XDOT 'X' /* use hidden-dot algorithm */ 216 # define M_TRYRULESET5 '5' /* use ruleset 5 after local aliasing */ 217 # define M_7BITS '7' /* use 7-bit path */ 218 # define M_8BITS '8' /* force "just send 8" behaviour */ 219 # define M_CHECKINCLUDE ':' /* check for :include: files */ 220 # define M_CHECKPROG '|' /* check for |program addresses */ 221 # define M_CHECKFILE '/' /* check for /file addresses */ 222 # define M_CHECKUDB '@' /* user can be user database key */ 223 224 EXTERN MAILER *Mailer[MAXMAILERS+1]; 225 226 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 227 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 228 EXTERN MAILER *FileMailer; /* ptr to *file* mailer */ 229 EXTERN MAILER *InclMailer; /* ptr to *include* mailer */ 230 /* 231 ** Header structure. 232 ** This structure is used internally to store header items. 233 */ 234 235 struct header 236 { 237 char *h_field; /* the name of the field */ 238 char *h_value; /* the value of that field */ 239 struct header *h_link; /* the next header */ 240 u_short h_flags; /* status bits, see below */ 241 BITMAP h_mflags; /* m_flags bits needed */ 242 }; 243 244 typedef struct header HDR; 245 246 /* 247 ** Header information structure. 248 ** Defined in conf.c, this struct declares the header fields 249 ** that have some magic meaning. 250 */ 251 252 struct hdrinfo 253 { 254 char *hi_field; /* the name of the field */ 255 u_short hi_flags; /* status bits, see below */ 256 }; 257 258 extern struct hdrinfo HdrInfo[]; 259 260 /* bits for h_flags and hi_flags */ 261 # define H_EOH 0x0001 /* this field terminates header */ 262 # define H_RCPT 0x0002 /* contains recipient addresses */ 263 # define H_DEFAULT 0x0004 /* if another value is found, drop this */ 264 # define H_RESENT 0x0008 /* this address is a "Resent-..." address */ 265 # define H_CHECK 0x0010 /* check h_mflags against m_flags */ 266 # define H_ACHECK 0x0020 /* ditto, but always (not just default) */ 267 # define H_FORCE 0x0040 /* force this field, even if default */ 268 # define H_TRACE 0x0080 /* this field contains trace information */ 269 # define H_FROM 0x0100 /* this is a from-type field */ 270 # define H_VALID 0x0200 /* this field has a validated value */ 271 # define H_RECEIPTTO 0x0400 /* this field has return receipt info */ 272 # define H_ERRORSTO 0x0800 /* this field has error address info */ 273 # define H_CTE 0x1000 /* this field is a content-transfer-encoding */ 274 # define H_CTYPE 0x2000 /* this is a content-type field */ 275 /* 276 ** Information about currently open connections to mailers, or to 277 ** hosts that we have looked up recently. 278 */ 279 280 # define MCI struct mailer_con_info 281 282 MCI 283 { 284 short mci_flags; /* flag bits, see below */ 285 short mci_errno; /* error number on last connection */ 286 short mci_herrno; /* h_errno from last DNS lookup */ 287 short mci_exitstat; /* exit status from last connection */ 288 short mci_state; /* SMTP state */ 289 long mci_maxsize; /* max size this server will accept */ 290 FILE *mci_in; /* input side of connection */ 291 FILE *mci_out; /* output side of connection */ 292 int mci_pid; /* process id of subordinate proc */ 293 char *mci_phase; /* SMTP phase string */ 294 struct mailer *mci_mailer; /* ptr to the mailer for this conn */ 295 char *mci_host; /* host name */ 296 char *mci_status; /* DSN status to be copied to addrs */ 297 time_t mci_lastuse; /* last usage time */ 298 }; 299 300 301 /* flag bits */ 302 #define MCIF_VALID 0x0001 /* this entry is valid */ 303 #define MCIF_TEMP 0x0002 /* don't cache this connection */ 304 #define MCIF_CACHED 0x0004 /* currently in open cache */ 305 #define MCIF_ESMTP 0x0008 /* this host speaks ESMTP */ 306 #define MCIF_EXPN 0x0010 /* EXPN command supported */ 307 #define MCIF_SIZE 0x0020 /* SIZE option supported */ 308 #define MCIF_8BITMIME 0x0040 /* BODY=8BITMIME supported */ 309 #define MCIF_7BIT 0x0080 /* strip this message to 7 bits */ 310 #define MCIF_MULTSTAT 0x0100 /* MAIL11V3: handles MULT status */ 311 #define MCIF_INHEADER 0x0200 /* currently outputing header */ 312 #define MCIF_CVT8TO7 0x0400 /* convert from 8 to 7 bits */ 313 #define MCIF_DSN 0x0800 /* DSN extension supported */ 314 315 /* states */ 316 #define MCIS_CLOSED 0 /* no traffic on this connection */ 317 #define MCIS_OPENING 1 /* sending initial protocol */ 318 #define MCIS_OPEN 2 /* open, initial protocol sent */ 319 #define MCIS_ACTIVE 3 /* message being sent */ 320 #define MCIS_QUITING 4 /* running quit protocol */ 321 #define MCIS_SSD 5 /* service shutting down */ 322 #define MCIS_ERROR 6 /* I/O error on connection */ 323 /* 324 ** Envelope structure. 325 ** This structure defines the message itself. There is usually 326 ** only one of these -- for the message that we originally read 327 ** and which is our primary interest -- but other envelopes can 328 ** be generated during processing. For example, error messages 329 ** will have their own envelope. 330 */ 331 332 # define ENVELOPE struct envelope 333 334 ENVELOPE 335 { 336 HDR *e_header; /* head of header list */ 337 long e_msgpriority; /* adjusted priority of this message */ 338 time_t e_ctime; /* time message appeared in the queue */ 339 char *e_to; /* the target person */ 340 char *e_receiptto; /* return receipt address */ 341 ADDRESS e_from; /* the person it is from */ 342 char *e_sender; /* e_from.q_paddr w comments stripped */ 343 char **e_fromdomain; /* the domain part of the sender */ 344 ADDRESS *e_sendqueue; /* list of message recipients */ 345 ADDRESS *e_errorqueue; /* the queue for error responses */ 346 long e_msgsize; /* size of the message in bytes */ 347 long e_flags; /* flags, see below */ 348 int e_nrcpts; /* number of recipients */ 349 short e_class; /* msg class (priority, junk, etc.) */ 350 short e_hopcount; /* number of times processed */ 351 short e_nsent; /* number of sends since checkpoint */ 352 short e_sendmode; /* message send mode */ 353 short e_errormode; /* error return mode */ 354 short e_timeoutclass; /* message timeout class */ 355 int (*e_puthdr)__P((MCI *, HDR *, ENVELOPE *)); 356 /* function to put header of message */ 357 int (*e_putbody)__P((MCI *, ENVELOPE *, char *)); 358 /* function to put body of message */ 359 struct envelope *e_parent; /* the message this one encloses */ 360 struct envelope *e_sibling; /* the next envelope of interest */ 361 char *e_bodytype; /* type of message body */ 362 char *e_df; /* location of temp file */ 363 FILE *e_dfp; /* temporary file */ 364 char *e_id; /* code for this entry in queue */ 365 FILE *e_xfp; /* transcript file */ 366 FILE *e_lockfp; /* the lock file for this message */ 367 char *e_message; /* error message */ 368 char *e_statmsg; /* stat msg (changes per delivery) */ 369 char *e_msgboundary; /* MIME-style message part boundary */ 370 char *e_origrcpt; /* original recipient (one only) */ 371 char *e_envid; /* envelope id from MAIL FROM: line */ 372 time_t e_dtime; /* time of last delivery attempt */ 373 int e_ntries; /* number of delivery attempts */ 374 dev_t e_dfdev; /* df file's device, for crash recov */ 375 ino_t e_dfino; /* df file's ino, for crash recovery */ 376 char *e_macro[256]; /* macro definitions */ 377 }; 378 379 /* values for e_flags */ 380 #define EF_OLDSTYLE 0x0000001 /* use spaces (not commas) in hdrs */ 381 #define EF_INQUEUE 0x0000002 /* this message is fully queued */ 382 #define EF_NORETURN 0x0000004 /* don't return the message on error */ 383 #define EF_CLRQUEUE 0x0000008 /* disk copy is no longer needed */ 384 #define EF_SENDRECEIPT 0x0000010 /* send a return receipt */ 385 #define EF_FATALERRS 0x0000020 /* fatal errors occured */ 386 #define EF_KEEPQUEUE 0x0000040 /* keep queue files always */ 387 #define EF_RESPONSE 0x0000080 /* this is an error or return receipt */ 388 #define EF_RESENT 0x0000100 /* this message is being forwarded */ 389 #define EF_VRFYONLY 0x0000200 /* verify only (don't expand aliases) */ 390 #define EF_WARNING 0x0000400 /* warning message has been sent */ 391 #define EF_QUEUERUN 0x0000800 /* this envelope is from queue */ 392 #define EF_GLOBALERRS 0x0001000 /* treat errors as global */ 393 #define EF_PM_NOTIFY 0x0002000 /* send return mail to postmaster */ 394 #define EF_METOO 0x0004000 /* send to me too */ 395 #define EF_LOGSENDER 0x0008000 /* need to log the sender */ 396 #define EF_NORECEIPT 0x0010000 /* suppress all return-receipts */ 397 #define EF_HAS8BIT 0x0020000 /* at least one 8-bit char in body */ 398 #define EF_NL_NOT_EOL 0x0040000 /* don't accept raw NL as EOLine */ 399 #define EF_CRLF_NOT_EOL 0x0080000 /* don't accept CR-LF as EOLine */ 400 401 EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ 402 /* 403 ** Message priority classes. 404 ** 405 ** The message class is read directly from the Priority: header 406 ** field in the message. 407 ** 408 ** CurEnv->e_msgpriority is the number of bytes in the message plus 409 ** the creation time (so that jobs ``tend'' to be ordered correctly), 410 ** adjusted by the message class, the number of recipients, and the 411 ** amount of time the message has been sitting around. This number 412 ** is used to order the queue. Higher values mean LOWER priority. 413 ** 414 ** Each priority class point is worth WkClassFact priority points; 415 ** each recipient is worth WkRecipFact priority points. Each time 416 ** we reprocess a message the priority is adjusted by WkTimeFact. 417 ** WkTimeFact should normally decrease the priority so that jobs 418 ** that have historically failed will be run later; thanks go to 419 ** Jay Lepreau at Utah for pointing out the error in my thinking. 420 ** 421 ** The "class" is this number, unadjusted by the age or size of 422 ** this message. Classes with negative representations will have 423 ** error messages thrown away if they are not local. 424 */ 425 426 struct priority 427 { 428 char *pri_name; /* external name of priority */ 429 int pri_val; /* internal value for same */ 430 }; 431 432 EXTERN struct priority Priorities[MAXPRIORITIES]; 433 EXTERN int NumPriorities; /* pointer into Priorities */ 434 /* 435 ** Rewrite rules. 436 */ 437 438 struct rewrite 439 { 440 char **r_lhs; /* pattern match */ 441 char **r_rhs; /* substitution value */ 442 struct rewrite *r_next;/* next in chain */ 443 }; 444 445 EXTERN struct rewrite *RewriteRules[MAXRWSETS]; 446 447 /* 448 ** Special characters in rewriting rules. 449 ** These are used internally only. 450 ** The COND* rules are actually used in macros rather than in 451 ** rewriting rules, but are given here because they 452 ** cannot conflict. 453 */ 454 455 /* left hand side items */ 456 # define MATCHZANY 0220 /* match zero or more tokens */ 457 # define MATCHANY 0221 /* match one or more tokens */ 458 # define MATCHONE 0222 /* match exactly one token */ 459 # define MATCHCLASS 0223 /* match one token in a class */ 460 # define MATCHNCLASS 0224 /* match anything not in class */ 461 # define MATCHREPL 0225 /* replacement on RHS for above */ 462 463 /* right hand side items */ 464 # define CANONNET 0226 /* canonical net, next token */ 465 # define CANONHOST 0227 /* canonical host, next token */ 466 # define CANONUSER 0230 /* canonical user, next N tokens */ 467 # define CALLSUBR 0231 /* call another rewriting set */ 468 469 /* conditionals in macros */ 470 # define CONDIF 0232 /* conditional if-then */ 471 # define CONDELSE 0233 /* conditional else */ 472 # define CONDFI 0234 /* conditional fi */ 473 474 /* bracket characters for host name lookup */ 475 # define HOSTBEGIN 0235 /* hostname lookup begin */ 476 # define HOSTEND 0236 /* hostname lookup end */ 477 478 /* bracket characters for generalized lookup */ 479 # define LOOKUPBEGIN 0205 /* generalized lookup begin */ 480 # define LOOKUPEND 0206 /* generalized lookup end */ 481 482 /* macro substitution character */ 483 # define MACROEXPAND 0201 /* macro expansion */ 484 # define MACRODEXPAND 0202 /* deferred macro expansion */ 485 486 /* to make the code clearer */ 487 # define MATCHZERO CANONHOST 488 489 /* external <==> internal mapping table */ 490 struct metamac 491 { 492 char metaname; /* external code (after $) */ 493 u_char metaval; /* internal code (as above) */ 494 }; 495 /* 496 ** Name canonification short circuit. 497 ** 498 ** If the name server for a host is down, the process of trying to 499 ** canonify the name can hang. This is similar to (but alas, not 500 ** identical to) looking up the name for delivery. This stab type 501 ** caches the result of the name server lookup so we don't hang 502 ** multiple times. 503 */ 504 505 #define NAMECANON struct _namecanon 506 507 NAMECANON 508 { 509 short nc_errno; /* cached errno */ 510 short nc_herrno; /* cached h_errno */ 511 short nc_stat; /* cached exit status code */ 512 short nc_flags; /* flag bits */ 513 char *nc_cname; /* the canonical name */ 514 }; 515 516 /* values for nc_flags */ 517 #define NCF_VALID 0x0001 /* entry valid */ 518 /* 519 ** Mapping functions 520 ** 521 ** These allow arbitrary mappings in the config file. The idea 522 ** (albeit not the implementation) comes from IDA sendmail. 523 */ 524 525 # define MAPCLASS struct _mapclass 526 # define MAP struct _map 527 # define MAXMAPACTIONS 3 /* size of map_actions array */ 528 529 530 /* 531 ** An actual map. 532 */ 533 534 MAP 535 { 536 MAPCLASS *map_class; /* the class of this map */ 537 char *map_mname; /* name of this map */ 538 int map_mflags; /* flags, see below */ 539 char *map_file; /* the (nominal) filename */ 540 ARBPTR_T map_db1; /* the open database ptr */ 541 ARBPTR_T map_db2; /* an "extra" database pointer */ 542 char *map_keycolnm; /* key column name */ 543 char *map_valcolnm; /* value column name */ 544 u_char map_keycolno; /* key column number */ 545 u_char map_valcolno; /* value column number */ 546 char map_coldelim; /* column delimiter */ 547 char *map_app; /* to append to successful matches */ 548 char *map_domain; /* the (nominal) NIS domain */ 549 char *map_rebuild; /* program to run to do auto-rebuild */ 550 time_t map_mtime; /* last database modification time */ 551 MAP *map_stack[MAXMAPSTACK]; /* list for stacked maps */ 552 short map_return[MAXMAPACTIONS]; /* return bitmaps for stacked maps */ 553 }; 554 555 /* bit values for map_flags */ 556 # define MF_VALID 0x0001 /* this entry is valid */ 557 # define MF_INCLNULL 0x0002 /* include null byte in key */ 558 # define MF_OPTIONAL 0x0004 /* don't complain if map not found */ 559 # define MF_NOFOLDCASE 0x0008 /* don't fold case in keys */ 560 # define MF_MATCHONLY 0x0010 /* don't use the map value */ 561 # define MF_OPEN 0x0020 /* this entry is open */ 562 # define MF_WRITABLE 0x0040 /* open for writing */ 563 # define MF_ALIAS 0x0080 /* this is an alias file */ 564 # define MF_TRY0NULL 0x0100 /* try with no null byte */ 565 # define MF_TRY1NULL 0x0200 /* try with the null byte */ 566 # define MF_LOCKED 0x0400 /* this map is currently locked */ 567 # define MF_ALIASWAIT 0x0800 /* alias map in aliaswait state */ 568 # define MF_IMPL_HASH 0x1000 /* implicit: underlying hash database */ 569 # define MF_IMPL_NDBM 0x2000 /* implicit: underlying NDBM database */ 570 # define MF_UNSAFEDB 0x4000 /* this map is world writable */ 571 572 /* indices for map_actions */ 573 # define MA_NOTFOUND 0 /* member map returned "not found" */ 574 # define MA_UNAVAIL 1 /* member map is not available */ 575 # define MA_TRYAGAIN 2 /* member map returns temp failure */ 576 577 /* 578 ** The class of a map -- essentially the functions to call 579 */ 580 581 MAPCLASS 582 { 583 char *map_cname; /* name of this map class */ 584 char *map_ext; /* extension for database file */ 585 short map_cflags; /* flag bits, see below */ 586 bool (*map_parse)__P((MAP *, char *)); 587 /* argument parsing function */ 588 char *(*map_lookup)__P((MAP *, char *, char **, int *)); 589 /* lookup function */ 590 void (*map_store)__P((MAP *, char *, char *)); 591 /* store function */ 592 bool (*map_open)__P((MAP *, int)); 593 /* open function */ 594 void (*map_close)__P((MAP *)); 595 /* close function */ 596 }; 597 598 /* bit values for map_cflags */ 599 #define MCF_ALIASOK 0x0001 /* can be used for aliases */ 600 #define MCF_ALIASONLY 0x0002 /* usable only for aliases */ 601 #define MCF_REBUILDABLE 0x0004 /* can rebuild alias files */ 602 #define MCF_OPTFILE 0x0008 /* file name is optional */ 603 /* 604 ** Symbol table definitions 605 */ 606 607 struct symtab 608 { 609 char *s_name; /* name to be entered */ 610 char s_type; /* general type (see below) */ 611 struct symtab *s_next; /* pointer to next in chain */ 612 union 613 { 614 BITMAP sv_class; /* bit-map of word classes */ 615 ADDRESS *sv_addr; /* pointer to address header */ 616 MAILER *sv_mailer; /* pointer to mailer */ 617 char *sv_alias; /* alias */ 618 MAPCLASS sv_mapclass; /* mapping function class */ 619 MAP sv_map; /* mapping function */ 620 char *sv_hostsig; /* host signature */ 621 MCI sv_mci; /* mailer connection info */ 622 NAMECANON sv_namecanon; /* canonical name cache */ 623 int sv_macro; /* macro name => id mapping */ 624 } s_value; 625 }; 626 627 typedef struct symtab STAB; 628 629 /* symbol types */ 630 # define ST_UNDEF 0 /* undefined type */ 631 # define ST_CLASS 1 /* class map */ 632 # define ST_ADDRESS 2 /* an address in parsed format */ 633 # define ST_MAILER 3 /* a mailer header */ 634 # define ST_ALIAS 4 /* an alias */ 635 # define ST_MAPCLASS 5 /* mapping function class */ 636 # define ST_MAP 6 /* mapping function */ 637 # define ST_HOSTSIG 7 /* host signature */ 638 # define ST_NAMECANON 8 /* cached canonical name */ 639 # define ST_MACRO 9 /* macro name to id mapping */ 640 # define ST_TRUSTED 10 /* trusted user */ 641 # define ST_MCI 16 /* mailer connection info (offset) */ 642 643 # define s_class s_value.sv_class 644 # define s_address s_value.sv_addr 645 # define s_mailer s_value.sv_mailer 646 # define s_alias s_value.sv_alias 647 # define s_mci s_value.sv_mci 648 # define s_mapclass s_value.sv_mapclass 649 # define s_hostsig s_value.sv_hostsig 650 # define s_map s_value.sv_map 651 # define s_namecanon s_value.sv_namecanon 652 # define s_macro s_value.sv_macro 653 654 extern STAB *stab __P((char *, int, int)); 655 extern void stabapply __P((void (*)(STAB *, int), int)); 656 657 /* opcodes to stab */ 658 # define ST_FIND 0 /* find entry */ 659 # define ST_ENTER 1 /* enter if not there */ 660 /* 661 ** STRUCT EVENT -- event queue. 662 ** 663 ** Maintained in sorted order. 664 ** 665 ** We store the pid of the process that set this event to insure 666 ** that when we fork we will not take events intended for the parent. 667 */ 668 669 struct event 670 { 671 time_t ev_time; /* time of the function call */ 672 int (*ev_func)__P((int)); 673 /* function to call */ 674 int ev_arg; /* argument to ev_func */ 675 int ev_pid; /* pid that set this event */ 676 struct event *ev_link; /* link to next item */ 677 }; 678 679 typedef struct event EVENT; 680 681 EXTERN EVENT *EventQueue; /* head of event queue */ 682 /* 683 ** Operation, send, error, and MIME modes 684 ** 685 ** The operation mode describes the basic operation of sendmail. 686 ** This can be set from the command line, and is "send mail" by 687 ** default. 688 ** 689 ** The send mode tells how to send mail. It can be set in the 690 ** configuration file. It's setting determines how quickly the 691 ** mail will be delivered versus the load on your system. If the 692 ** -v (verbose) flag is given, it will be forced to SM_DELIVER 693 ** mode. 694 ** 695 ** The error mode tells how to return errors. 696 */ 697 698 EXTERN char OpMode; /* operation mode, see below */ 699 700 #define MD_DELIVER 'm' /* be a mail sender */ 701 #define MD_SMTP 's' /* run SMTP on standard input */ 702 #define MD_ARPAFTP 'a' /* obsolete ARPANET mode (Grey Book) */ 703 #define MD_DAEMON 'd' /* run as a daemon */ 704 #define MD_VERIFY 'v' /* verify: don't collect or deliver */ 705 #define MD_TEST 't' /* test mode: resolve addrs only */ 706 #define MD_INITALIAS 'i' /* initialize alias database */ 707 #define MD_PRINT 'p' /* print the queue */ 708 #define MD_FREEZE 'z' /* freeze the configuration file */ 709 710 711 /* values for e_sendmode -- send modes */ 712 #define SM_DELIVER 'i' /* interactive delivery */ 713 #define SM_QUICKD 'j' /* deliver w/o queueing */ 714 #define SM_FORK 'b' /* deliver in background */ 715 #define SM_QUEUE 'q' /* queue, don't deliver */ 716 #define SM_VERIFY 'v' /* verify only (used internally) */ 717 718 /* used only as a parameter to sendall */ 719 #define SM_DEFAULT '\0' /* unspecified, use SendMode */ 720 721 722 /* values for e_errormode -- error handling modes */ 723 #define EM_PRINT 'p' /* print errors */ 724 #define EM_MAIL 'm' /* mail back errors */ 725 #define EM_WRITE 'w' /* write back errors */ 726 #define EM_BERKNET 'e' /* special berknet processing */ 727 #define EM_QUIET 'q' /* don't print messages (stat only) */ 728 729 730 /* MIME processing mode */ 731 EXTERN int MimeMode; 732 733 /* bit values for MimeMode */ 734 #define MM_CVTMIME 0x0001 /* convert 8 to 7 bit MIME */ 735 #define MM_PASS8BIT 0x0002 /* just send 8 bit data blind */ 736 #define MM_MIME8BIT 0x0004 /* convert 8-bit data to MIME */ 737 738 /* queue sorting order algorithm */ 739 EXTERN int QueueSortOrder; 740 741 #define QS_BYPRIORITY 0 /* sort by message priority */ 742 #define QS_BYHOST 1 /* sort by first host name */ 743 /* 744 ** Additional definitions 745 */ 746 747 748 /* 749 ** Privacy flags 750 ** These are bit values for the PrivacyFlags word. 751 */ 752 753 #define PRIV_PUBLIC 0 /* what have I got to hide? */ 754 #define PRIV_NEEDMAILHELO 0x0001 /* insist on HELO for MAIL, at least */ 755 #define PRIV_NEEDEXPNHELO 0x0002 /* insist on HELO for EXPN */ 756 #define PRIV_NEEDVRFYHELO 0x0004 /* insist on HELO for VRFY */ 757 #define PRIV_NOEXPN 0x0008 /* disallow EXPN command entirely */ 758 #define PRIV_NOVRFY 0x0010 /* disallow VRFY command entirely */ 759 #define PRIV_AUTHWARNINGS 0x0020 /* flag possible authorization probs */ 760 #define PRIV_NORECEIPTS 0x0040 /* disallow return receipts */ 761 #define PRIV_RESTRICTMAILQ 0x1000 /* restrict mailq command */ 762 #define PRIV_RESTRICTQRUN 0x2000 /* restrict queue run */ 763 #define PRIV_GOAWAY 0x0fff /* don't give no info, anyway, anyhow */ 764 765 /* struct defining such things */ 766 struct prival 767 { 768 char *pv_name; /* name of privacy flag */ 769 int pv_flag; /* numeric level */ 770 }; 771 772 773 /* 774 ** Flags passed to remotename, parseaddr, allocaddr, and buildaddr. 775 */ 776 777 #define RF_SENDERADDR 0x001 /* this is a sender address */ 778 #define RF_HEADERADDR 0x002 /* this is a header address */ 779 #define RF_CANONICAL 0x004 /* strip comment information */ 780 #define RF_ADDDOMAIN 0x008 /* OK to do domain extension */ 781 #define RF_COPYPARSE 0x010 /* copy parsed user & host */ 782 #define RF_COPYPADDR 0x020 /* copy print address */ 783 #define RF_COPYALL (RF_COPYPARSE|RF_COPYPADDR) 784 #define RF_COPYNONE 0 785 786 787 /* 788 ** Flags passed to safefile. 789 */ 790 791 #define SFF_ANYFILE 0 /* no special restrictions */ 792 #define SFF_MUSTOWN 0x0001 /* user must own this file */ 793 #define SFF_NOSLINK 0x0002 /* file cannot be a symbolic link */ 794 #define SFF_ROOTOK 0x0004 /* ok for root to own this file */ 795 #define SFF_NOPATHCHECK 0x0010 /* don't bother checking dir path */ 796 797 798 /* 799 ** Regular UNIX sockaddrs are too small to handle ISO addresses, so 800 ** we are forced to declare a supertype here. 801 */ 802 803 union bigsockaddr 804 { 805 struct sockaddr sa; /* general version */ 806 #ifdef NETUNIX 807 struct sockaddr_un sunix; /* UNIX family */ 808 #endif 809 #ifdef NETINET 810 struct sockaddr_in sin; /* INET family */ 811 #endif 812 #ifdef NETISO 813 struct sockaddr_iso siso; /* ISO family */ 814 #endif 815 #ifdef NETNS 816 struct sockaddr_ns sns; /* XNS family */ 817 #endif 818 #ifdef NETX25 819 struct sockaddr_x25 sx25; /* X.25 family */ 820 #endif 821 }; 822 823 #define SOCKADDR union bigsockaddr 824 825 826 /* 827 ** Vendor codes 828 ** 829 ** Vendors can customize sendmail to add special behaviour, 830 ** generally for back compatibility. Ideally, this should 831 ** be set up in the .cf file using the "V" command. However, 832 ** it's quite reasonable for some vendors to want the default 833 ** be their old version; this can be set using 834 ** -DVENDOR_DEFAULT=VENDOR_xxx 835 ** in the Makefile. 836 ** 837 ** Vendors should apply to sendmail@CS.Berkeley.EDU for 838 ** unique vendor codes. 839 */ 840 841 #define VENDOR_BERKELEY 1 /* Berkeley-native configuration file */ 842 #define VENDOR_SUN 2 /* Sun-native configuration file */ 843 844 EXTERN int VendorCode; /* vendor-specific operation enhancements */ 845 /* 846 ** Global variables. 847 */ 848 849 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 850 EXTERN bool MeToo; /* send to the sender also */ 851 EXTERN bool IgnrDot; /* don't let dot end messages */ 852 EXTERN bool SaveFrom; /* save leading "From" lines */ 853 EXTERN bool Verbose; /* set if blow-by-blow desired */ 854 EXTERN bool GrabTo; /* if set, get recipients from msg */ 855 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 856 EXTERN bool HoldErrs; /* only output errors to transcript */ 857 EXTERN bool NoConnect; /* don't connect to non-local mailers */ 858 EXTERN bool SuperSafe; /* be extra careful, even if expensive */ 859 EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ 860 EXTERN bool AutoRebuild; /* auto-rebuild the alias database as needed */ 861 EXTERN bool CheckAliases; /* parse addresses during newaliases */ 862 EXTERN bool NoAlias; /* suppress aliasing */ 863 EXTERN bool UseNameServer; /* using DNS -- interpret h_errno & MX RRs */ 864 EXTERN bool UseHesiod; /* using Hesiod -- interpret Hesiod errors */ 865 EXTERN bool SevenBitInput; /* force 7-bit data on input */ 866 EXTERN bool HasEightBits; /* has at least one eight bit input byte */ 867 EXTERN time_t SafeAlias; /* interval to wait until @:@ in alias file */ 868 EXTERN FILE *InChannel; /* input connection */ 869 EXTERN FILE *OutChannel; /* output connection */ 870 EXTERN uid_t RealUid; /* when Daemon, real uid of caller */ 871 EXTERN gid_t RealGid; /* when Daemon, real gid of caller */ 872 EXTERN uid_t DefUid; /* default uid to run as */ 873 EXTERN gid_t DefGid; /* default gid to run as */ 874 EXTERN char *DefUser; /* default user to run as (from DefUid) */ 875 EXTERN int OldUmask; /* umask when sendmail starts up */ 876 EXTERN int Errors; /* set if errors (local to single pass) */ 877 EXTERN int ExitStat; /* exit status code */ 878 EXTERN int LineNumber; /* line number in current input */ 879 EXTERN int LogLevel; /* level of logging to perform */ 880 EXTERN int FileMode; /* mode on files */ 881 EXTERN int QueueLA; /* load average starting forced queueing */ 882 EXTERN int RefuseLA; /* load average refusing connections are */ 883 EXTERN int CurrentLA; /* current load average */ 884 EXTERN long QueueFactor; /* slope of queue function */ 885 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 886 EXTERN char *HelpFile; /* location of SMTP help file */ 887 EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ 888 EXTERN char *StatFile; /* location of statistics summary */ 889 EXTERN char *QueueDir; /* location of queue directory */ 890 EXTERN char *FileName; /* name to print on error messages */ 891 EXTERN char *SmtpPhase; /* current phase in SMTP processing */ 892 EXTERN char *MyHostName; /* name of this host for SMTP messages */ 893 EXTERN char *RealHostName; /* name of host we are talking to */ 894 EXTERN SOCKADDR RealHostAddr; /* address of host we are talking to */ 895 EXTERN char *CurHostName; /* current host we are dealing with */ 896 EXTERN jmp_buf TopFrame; /* branch-to-top-of-loop-on-error frame */ 897 EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ 898 EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ 899 EXTERN bool SendMIMEErrors; /* send error messages in MIME format */ 900 EXTERN bool MatchGecos; /* look for user names in gecos field */ 901 EXTERN bool UseErrorsTo; /* use Errors-To: header (back compat) */ 902 EXTERN bool TryNullMXList; /* if we are the best MX, try host directly */ 903 EXTERN bool InChild; /* true if running in an SMTP subprocess */ 904 EXTERN bool DisConnected; /* running with OutChannel redirected to xf */ 905 EXTERN char SpaceSub; /* substitution for <lwsp> */ 906 EXTERN int PrivacyFlags; /* privacy flags */ 907 EXTERN char *ConfFile; /* location of configuration file [conf.c] */ 908 extern char *PidFile; /* location of proc id file [conf.c] */ 909 extern ADDRESS NullAddress; /* a null (template) address [main.c] */ 910 EXTERN long WkClassFact; /* multiplier for message class -> priority */ 911 EXTERN long WkRecipFact; /* multiplier for # of recipients -> priority */ 912 EXTERN long WkTimeFact; /* priority offset each time this job is run */ 913 EXTERN char *UdbSpec; /* user database source spec */ 914 EXTERN int MaxHopCount; /* max # of hops until bounce */ 915 EXTERN int ConfigLevel; /* config file level */ 916 EXTERN char *TimeZoneSpec; /* override time zone specification */ 917 EXTERN char *ForwardPath; /* path to search for .forward files */ 918 EXTERN long MinBlocksFree; /* min # of blocks free on queue fs */ 919 EXTERN char *FallBackMX; /* fall back MX host */ 920 EXTERN long MaxMessageSize; /* advertised max size we will accept */ 921 EXTERN time_t MaxHostStatAge; /* max age of cached host status info */ 922 EXTERN time_t MinQueueAge; /* min delivery interval */ 923 EXTERN time_t DialDelay; /* delay between dial-on-demand tries */ 924 EXTERN char *ServiceSwitchFile; /* backup service switch */ 925 EXTERN char *DefaultCharSet; /* default character set for MIME */ 926 EXTERN int DeliveryNiceness; /* how nice to be during delivery */ 927 EXTERN char *PostMasterCopy; /* address to get errs cc's */ 928 EXTERN int CheckpointInterval; /* queue file checkpoint interval */ 929 EXTERN bool DontPruneRoutes; /* don't prune source routes */ 930 EXTERN bool BrokenSmtpPeers; /* peers can't handle 2-line greeting */ 931 EXTERN int MaxMciCache; /* maximum entries in MCI cache */ 932 EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ 933 EXTERN char *QueueLimitRecipient; /* limit queue runs to this recipient */ 934 EXTERN char *QueueLimitSender; /* limit queue runs to this sender */ 935 EXTERN char *QueueLimitId; /* limit queue runs to this id */ 936 EXTERN FILE *TrafficLogFile; /* file in which to log all traffic */ 937 extern int errno; 938 939 940 /* 941 ** Timeouts 942 ** 943 ** Indicated values are the MINIMUM per RFC 1123 section 5.3.2. 944 */ 945 946 EXTERN struct 947 { 948 /* RFC 1123-specified timeouts [minimum value] */ 949 time_t to_initial; /* initial greeting timeout [5m] */ 950 time_t to_mail; /* MAIL command [5m] */ 951 time_t to_rcpt; /* RCPT command [5m] */ 952 time_t to_datainit; /* DATA initiation [2m] */ 953 time_t to_datablock; /* DATA block [3m] */ 954 time_t to_datafinal; /* DATA completion [10m] */ 955 time_t to_nextcommand; /* next command [5m] */ 956 /* following timeouts are not mentioned in RFC 1123 */ 957 time_t to_rset; /* RSET command */ 958 time_t to_helo; /* HELO command */ 959 time_t to_quit; /* QUIT command */ 960 time_t to_miscshort; /* misc short commands (NOOP, VERB, etc) */ 961 time_t to_ident; /* IDENT protocol requests */ 962 time_t to_fileopen; /* opening :include: and .forward files */ 963 /* following are per message */ 964 time_t to_q_return[MAXTOCLASS]; /* queue return timeouts */ 965 time_t to_q_warning[MAXTOCLASS]; /* queue warning timeouts */ 966 } TimeOuts; 967 968 /* timeout classes for return and warning timeouts */ 969 # define TOC_NORMAL 0 /* normal delivery */ 970 # define TOC_URGENT 1 /* urgent delivery */ 971 # define TOC_NONURGENT 2 /* non-urgent delivery */ 972 973 974 /* 975 ** Trace information 976 */ 977 978 /* trace vector and macros for debugging flags */ 979 EXTERN u_char tTdvect[100]; 980 # define tTd(flag, level) (tTdvect[flag] >= level) 981 # define tTdlevel(flag) (tTdvect[flag]) 982 /* 983 ** Miscellaneous information. 984 */ 985 986 987 988 /* 989 ** Some in-line functions 990 */ 991 992 /* set exit status */ 993 #define setstat(s) { \ 994 if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ 995 ExitStat = s; \ 996 } 997 998 /* make a copy of a string */ 999 #define newstr(s) strcpy(xalloc(strlen(s) + 1), s) 1000 1001 #define STRUCTCOPY(s, d) d = s 1002 1003 1004 /* 1005 ** Declarations of useful functions 1006 */ 1007 1008 extern ADDRESS *parseaddr __P((char *, ADDRESS *, int, int, char **, ENVELOPE *)); 1009 extern char *xalloc __P((int)); 1010 extern bool sameaddr __P((ADDRESS *, ADDRESS *)); 1011 extern FILE *dfopen __P((char *, int, int)); 1012 extern EVENT *setevent __P((time_t, int(*)(), int)); 1013 extern char *sfgets __P((char *, int, FILE *, time_t, char *)); 1014 extern char *queuename __P((ENVELOPE *, int)); 1015 extern time_t curtime __P(()); 1016 extern bool transienterror __P((int)); 1017 extern const char *errstring __P((int)); 1018 extern void expand __P((char *, char *, char *, ENVELOPE *)); 1019 extern void define __P((int, char *, ENVELOPE *)); 1020 extern char *macvalue __P((int, ENVELOPE *)); 1021 extern char *macname __P((int)); 1022 extern int macid __P((char *, char **)); 1023 extern char **prescan __P((char *, int, char[], int, char **)); 1024 extern int rewrite __P((char **, int, int, ENVELOPE *)); 1025 extern char *fgetfolded __P((char *, int, FILE *)); 1026 extern ADDRESS *recipient __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 1027 extern ENVELOPE *newenvelope __P((ENVELOPE *, ENVELOPE *)); 1028 extern void dropenvelope __P((ENVELOPE *)); 1029 extern void clearenvelope __P((ENVELOPE *, int)); 1030 extern char *username __P(()); 1031 extern MCI *mci_get __P((char *, MAILER *)); 1032 extern char *pintvl __P((time_t, int)); 1033 extern char *map_rewrite __P((MAP *, char *, int, char **)); 1034 extern ADDRESS *getctladdr __P((ADDRESS *)); 1035 extern char *anynet_ntoa __P((SOCKADDR *)); 1036 extern char *remotename __P((char *, MAILER *, int, int *, ENVELOPE *)); 1037 extern bool shouldqueue __P((long, time_t)); 1038 extern bool lockfile __P((int, char *, char *, int)); 1039 extern char *hostsignature __P((MAILER *, char *, ENVELOPE *)); 1040 extern void openxscript __P((ENVELOPE *)); 1041 extern void closexscript __P((ENVELOPE *)); 1042 extern sigfunc_t setsignal __P((int, sigfunc_t)); 1043 extern char *shortenstring __P((char *, int)); 1044 extern bool usershellok __P((char *)); 1045 extern void commaize __P((HDR *, char *, int, MCI *, ENVELOPE *)); 1046 extern char *hvalue __P((char *, HDR *)); 1047 extern char *defcharset __P((ENVELOPE *)); 1048 extern bool emptyaddr __P((ADDRESS *)); 1049 extern int sendtolist __P((char *, ADDRESS *, ADDRESS **, int, ENVELOPE *)); 1050 extern bool wordinclass __P((char *, char)); 1051 extern char *denlstring __P((char *)); 1052 1053 /* ellipsis is a different case though */ 1054 #ifdef __STDC__ 1055 extern void auth_warning(ENVELOPE *, const char *, ...); 1056 extern void syserr(const char *, ...); 1057 extern void usrerr(const char *, ...); 1058 extern void message(const char *, ...); 1059 extern void nmessage(const char *, ...); 1060 #else 1061 extern void auth_warning(); 1062 extern void syserr(); 1063 extern void usrerr(); 1064 extern void message(); 1065 extern void nmessage(); 1066 #endif 1067