1 /* 2 * Copyright (c) 1983, 1995 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 8.138 (Berkeley) 05/30/95 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 8.138 05/30/95"; 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 /* forward references for prototypes */ 67 typedef struct envelope ENVELOPE; 68 typedef struct mailer MAILER; 69 70 71 /* 72 ** Data structure for bit maps. 73 ** 74 ** Each bit in this map can be referenced by an ascii character. 75 ** This is 256 possible bits, or 32 8-bit bytes. 76 */ 77 78 #define BITMAPBYTES 32 /* number of bytes in a bit map */ 79 #define BYTEBITS 8 /* number of bits in a byte */ 80 81 /* internal macros */ 82 #define _BITWORD(bit) ((bit) / (BYTEBITS * sizeof (int))) 83 #define _BITBIT(bit) (1 << ((bit) % (BYTEBITS * sizeof (int)))) 84 85 typedef int BITMAP[BITMAPBYTES / sizeof (int)]; 86 87 /* test bit number N */ 88 #define bitnset(bit, map) ((map)[_BITWORD(bit)] & _BITBIT(bit)) 89 90 /* set bit number N */ 91 #define setbitn(bit, map) (map)[_BITWORD(bit)] |= _BITBIT(bit) 92 93 /* clear bit number N */ 94 #define clrbitn(bit, map) (map)[_BITWORD(bit)] &= ~_BITBIT(bit) 95 96 /* clear an entire bit map */ 97 #define clrbitmap(map) bzero((char *) map, BITMAPBYTES) 98 /* 99 ** Address structure. 100 ** Addresses are stored internally in this structure. 101 */ 102 103 struct address 104 { 105 char *q_paddr; /* the printname for the address */ 106 char *q_user; /* user name */ 107 char *q_ruser; /* real user name, or NULL if q_user */ 108 char *q_host; /* host name */ 109 struct mailer *q_mailer; /* mailer to use */ 110 u_long q_flags; /* status flags, see below */ 111 uid_t q_uid; /* user-id of receiver (if known) */ 112 gid_t q_gid; /* group-id of receiver (if known) */ 113 char *q_home; /* home dir (local mailer only) */ 114 char *q_fullname; /* full name if known */ 115 struct address *q_next; /* chain */ 116 struct address *q_alias; /* address this results from */ 117 char *q_owner; /* owner of q_alias */ 118 struct address *q_tchain; /* temporary use chain */ 119 char *q_orcpt; /* ORCPT parameter from RCPT TO: line */ 120 char *q_status; /* status code for DSNs */ 121 char *q_fstatus; /* final status code for DSNs */ 122 char *q_rstatus; /* remote status message for DSNs */ 123 time_t q_statdate; /* date of status messages */ 124 char *q_statmta; /* MTA generating q_rstatus */ 125 short q_specificity; /* how "specific" this address is */ 126 }; 127 128 typedef struct address ADDRESS; 129 130 # define QDONTSEND 0x00000001 /* don't send to this address */ 131 # define QBADADDR 0x00000002 /* this address is verified bad */ 132 # define QGOODUID 0x00000004 /* the q_uid q_gid fields are good */ 133 # define QPRIMARY 0x00000008 /* set from RCPT or argv */ 134 # define QQUEUEUP 0x00000010 /* queue for later transmission */ 135 # define QSENT 0x00000020 /* has been successfully delivered */ 136 # define QNOTREMOTE 0x00000040 /* address not for remote forwarding */ 137 # define QSELFREF 0x00000080 /* this address references itself */ 138 # define QVERIFIED 0x00000100 /* verified, but not expanded */ 139 # define QBOGUSSHELL 0x00000400 /* user has no valid shell listed */ 140 # define QUNSAFEADDR 0x00000800 /* address aquired via unsafe path */ 141 # define QPINGONSUCCESS 0x00001000 /* give return on successful delivery */ 142 # define QPINGONFAILURE 0x00002000 /* give return on failure */ 143 # define QPINGONDELAY 0x00004000 /* give return on message delay */ 144 # define QHASNOTIFY 0x00008000 /* propogate notify parameter */ 145 # define QRELAYED 0x00010000 /* DSN: relayed to non-DSN aware sys */ 146 # define QEXPANDED 0x00020000 /* DSN: undergone list expansion */ 147 # define QDELIVERED 0x00040000 /* DSN: successful final delivery */ 148 # define QDELAYED 0x00080000 /* DSN: message delayed */ 149 # define QTHISPASS 0x80000000 /* temp: address set this pass */ 150 151 # define NULLADDR ((ADDRESS *) NULL) 152 153 /* functions */ 154 extern ADDRESS *parseaddr __P((char *, ADDRESS *, int, int, char **, ENVELOPE *)); 155 extern ADDRESS *recipient __P((ADDRESS *, ADDRESS **, int, ENVELOPE *)); 156 extern char **prescan __P((char *, int, char[], int, char **, u_char *)); 157 extern int rewrite __P((char **, int, int, ENVELOPE *)); 158 extern char *remotename __P((char *, MAILER *, int, int *, ENVELOPE *)); 159 extern ADDRESS *getctladdr __P((ADDRESS *)); 160 extern bool sameaddr __P((ADDRESS *, ADDRESS *)); 161 extern bool emptyaddr __P((ADDRESS *)); 162 extern void printaddr __P((ADDRESS *, bool)); 163 extern void cataddr __P((char **, char **, char *, int, int)); 164 extern int sendtolist __P((char *, ADDRESS *, ADDRESS **, int, ENVELOPE *)); 165 /* 166 ** Mailer definition structure. 167 ** Every mailer known to the system is declared in this 168 ** structure. It defines the pathname of the mailer, some 169 ** flags associated with it, and the argument vector to 170 ** pass to it. The flags are defined in conf.c 171 ** 172 ** The argument vector is expanded before actual use. All 173 ** words except the first are passed through the macro 174 ** processor. 175 */ 176 177 struct mailer 178 { 179 char *m_name; /* symbolic name of this mailer */ 180 char *m_mailer; /* pathname of the mailer to use */ 181 char *m_mtatype; /* type of this MTA */ 182 char *m_addrtype; /* type for addresses */ 183 char *m_diagtype; /* type for diagnostics */ 184 BITMAP m_flags; /* status flags, see below */ 185 short m_mno; /* mailer number internally */ 186 short m_nice; /* niceness to run at (mostly for prog) */ 187 char **m_argv; /* template argument vector */ 188 short m_sh_rwset; /* rewrite set: sender header addresses */ 189 short m_se_rwset; /* rewrite set: sender envelope addresses */ 190 short m_rh_rwset; /* rewrite set: recipient header addresses */ 191 short m_re_rwset; /* rewrite set: recipient envelope addresses */ 192 char *m_eol; /* end of line string */ 193 long m_maxsize; /* size limit on message to this mailer */ 194 int m_linelimit; /* max # characters per line */ 195 char *m_execdir; /* directory to chdir to before execv */ 196 uid_t m_uid; /* UID to run as */ 197 gid_t m_gid; /* GID to run as */ 198 char *m_defcharset; /* default character set */ 199 }; 200 201 /* bits for m_flags */ 202 # define M_ESMTP 'a' /* run Extended SMTP protocol */ 203 # define M_ALIASABLE 'A' /* user can be LHS of an alias */ 204 # define M_BLANKEND 'b' /* ensure blank line at end of message */ 205 # define M_NOCOMMENT 'c' /* don't include comment part of address */ 206 # define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ 207 # define M_NOBRACKET 'd' /* never angle bracket envelope route-addrs */ 208 /* 'D' /* CF: include Date: */ 209 # define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ 210 # define M_ESCFROM 'E' /* escape From lines to >From */ 211 # define M_FOPT 'f' /* mailer takes picky -f flag */ 212 /* 'F' /* CF: include From: or Resent-From: */ 213 # define M_NO_NULL_FROM 'g' /* sender of errors should be $g */ 214 # define M_HST_UPPER 'h' /* preserve host case distinction */ 215 # define M_PREHEAD 'H' /* MAIL11V3: preview headers */ 216 # define M_UDBENVELOPE 'i' /* do udbsender rewriting on envelope */ 217 # define M_INTERNAL 'I' /* SMTP to another sendmail site */ 218 # define M_UDBRECIPIENT 'j' /* do udbsender rewriting on recipient lines */ 219 # define M_NOLOOPCHECK 'k' /* don't check for loops in HELO command */ 220 # define M_LOCALMAILER 'l' /* delivery is to this host */ 221 # define M_LIMITS 'L' /* must enforce SMTP line limits */ 222 # define M_MUSER 'm' /* can handle multiple users at once */ 223 /* 'M' /* CF: include Message-Id: */ 224 # define M_NHDR 'n' /* don't insert From line */ 225 # define M_MANYSTATUS 'N' /* MAIL11V3: DATA returns multi-status */ 226 # define M_RUNASRCPT 'o' /* always run mailer as recipient */ 227 # define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ 228 /* 'P' /* CF: include Return-Path: */ 229 # define M_ROPT 'r' /* mailer takes picky -r flag */ 230 # define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */ 231 # define M_STRIPQ 's' /* strip quote chars from user/host */ 232 # define M_SPECIFIC_UID 'S' /* run as specific uid/gid */ 233 # define M_USR_UPPER 'u' /* preserve user case distinction */ 234 # define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ 235 # define M_CONTENT_LEN 'v' /* add Content-Length: header (SVr4) */ 236 /* 'V' /* UIUC: !-relativize all addresses */ 237 # define M_HASPWENT 'w' /* check for /etc/passwd entry */ 238 /* 'x' /* CF: include Full-Name: */ 239 # define M_XDOT 'X' /* use hidden-dot algorithm */ 240 # define M_EBCDIC '3' /* extend Q-P encoding for EBCDIC */ 241 # define M_TRYRULESET5 '5' /* use ruleset 5 after local aliasing */ 242 # define M_7BITS '7' /* use 7-bit path */ 243 # define M_8BITS '8' /* force "just send 8" behaviour */ 244 # define M_MAKE8BIT '9' /* convert 7 -> 8 bit if appropriate */ 245 # define M_CHECKINCLUDE ':' /* check for :include: files */ 246 # define M_CHECKPROG '|' /* check for |program addresses */ 247 # define M_CHECKFILE '/' /* check for /file addresses */ 248 # define M_CHECKUDB '@' /* user can be user database key */ 249 250 EXTERN MAILER *Mailer[MAXMAILERS+1]; 251 252 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 253 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 254 EXTERN MAILER *FileMailer; /* ptr to *file* mailer */ 255 EXTERN MAILER *InclMailer; /* ptr to *include* mailer */ 256 /* 257 ** Header structure. 258 ** This structure is used internally to store header items. 259 */ 260 261 struct header 262 { 263 char *h_field; /* the name of the field */ 264 char *h_value; /* the value of that field */ 265 struct header *h_link; /* the next header */ 266 u_short h_flags; /* status bits, see below */ 267 BITMAP h_mflags; /* m_flags bits needed */ 268 }; 269 270 typedef struct header HDR; 271 272 /* 273 ** Header information structure. 274 ** Defined in conf.c, this struct declares the header fields 275 ** that have some magic meaning. 276 */ 277 278 struct hdrinfo 279 { 280 char *hi_field; /* the name of the field */ 281 u_short hi_flags; /* status bits, see below */ 282 }; 283 284 extern struct hdrinfo HdrInfo[]; 285 286 /* bits for h_flags and hi_flags */ 287 # define H_EOH 0x0001 /* this field terminates header */ 288 # define H_RCPT 0x0002 /* contains recipient addresses */ 289 # define H_DEFAULT 0x0004 /* if another value is found, drop this */ 290 # define H_RESENT 0x0008 /* this address is a "Resent-..." address */ 291 # define H_CHECK 0x0010 /* check h_mflags against m_flags */ 292 # define H_ACHECK 0x0020 /* ditto, but always (not just default) */ 293 # define H_FORCE 0x0040 /* force this field, even if default */ 294 # define H_TRACE 0x0080 /* this field contains trace information */ 295 # define H_FROM 0x0100 /* this is a from-type field */ 296 # define H_VALID 0x0200 /* this field has a validated value */ 297 # define H_RECEIPTTO 0x0400 /* this field has return receipt info */ 298 # define H_ERRORSTO 0x0800 /* this field has error address info */ 299 # define H_CTE 0x1000 /* this field is a content-transfer-encoding */ 300 # define H_CTYPE 0x2000 /* this is a content-type field */ 301 # define H_STRIPVAL 0x4000 /* strip value from header (Bcc:) */ 302 /* 303 ** Information about currently open connections to mailers, or to 304 ** hosts that we have looked up recently. 305 */ 306 307 # define MCI struct mailer_con_info 308 309 MCI 310 { 311 short mci_flags; /* flag bits, see below */ 312 short mci_errno; /* error number on last connection */ 313 short mci_herrno; /* h_errno from last DNS lookup */ 314 short mci_exitstat; /* exit status from last connection */ 315 short mci_state; /* SMTP state */ 316 long mci_maxsize; /* max size this server will accept */ 317 FILE *mci_in; /* input side of connection */ 318 FILE *mci_out; /* output side of connection */ 319 int mci_pid; /* process id of subordinate proc */ 320 char *mci_phase; /* SMTP phase string */ 321 struct mailer *mci_mailer; /* ptr to the mailer for this conn */ 322 char *mci_host; /* host name */ 323 char *mci_status; /* DSN status to be copied to addrs */ 324 time_t mci_lastuse; /* last usage time */ 325 }; 326 327 328 /* flag bits */ 329 #define MCIF_VALID 0x0001 /* this entry is valid */ 330 #define MCIF_TEMP 0x0002 /* don't cache this connection */ 331 #define MCIF_CACHED 0x0004 /* currently in open cache */ 332 #define MCIF_ESMTP 0x0008 /* this host speaks ESMTP */ 333 #define MCIF_EXPN 0x0010 /* EXPN command supported */ 334 #define MCIF_SIZE 0x0020 /* SIZE option supported */ 335 #define MCIF_8BITMIME 0x0040 /* BODY=8BITMIME supported */ 336 #define MCIF_7BIT 0x0080 /* strip this message to 7 bits */ 337 #define MCIF_MULTSTAT 0x0100 /* MAIL11V3: handles MULT status */ 338 #define MCIF_INHEADER 0x0200 /* currently outputing header */ 339 #define MCIF_CVT8TO7 0x0400 /* convert from 8 to 7 bits */ 340 #define MCIF_DSN 0x0800 /* DSN extension supported */ 341 #define MCIF_8BITOK 0x1000 /* OK to send 8 bit characters */ 342 #define MCIF_CVT7TO8 0x2000 /* convert from 7 to 8 bits */ 343 #define MCIF_INMIME 0x4000 /* currently reading MIME header */ 344 345 /* states */ 346 #define MCIS_CLOSED 0 /* no traffic on this connection */ 347 #define MCIS_OPENING 1 /* sending initial protocol */ 348 #define MCIS_OPEN 2 /* open, initial protocol sent */ 349 #define MCIS_ACTIVE 3 /* message being sent */ 350 #define MCIS_QUITING 4 /* running quit protocol */ 351 #define MCIS_SSD 5 /* service shutting down */ 352 #define MCIS_ERROR 6 /* I/O error on connection */ 353 354 /* functions */ 355 extern MCI *mci_get __P((char *, MAILER *)); 356 extern void mci_cache __P((MCI *)); 357 extern void mci_flush __P((bool, MCI *)); 358 /* 359 ** Envelope structure. 360 ** This structure defines the message itself. There is usually 361 ** only one of these -- for the message that we originally read 362 ** and which is our primary interest -- but other envelopes can 363 ** be generated during processing. For example, error messages 364 ** will have their own envelope. 365 */ 366 367 struct envelope 368 { 369 HDR *e_header; /* head of header list */ 370 long e_msgpriority; /* adjusted priority of this message */ 371 time_t e_ctime; /* time message appeared in the queue */ 372 char *e_to; /* the target person */ 373 char *e_receiptto; /* return receipt address */ 374 ADDRESS e_from; /* the person it is from */ 375 char *e_sender; /* e_from.q_paddr w comments stripped */ 376 char **e_fromdomain; /* the domain part of the sender */ 377 ADDRESS *e_sendqueue; /* list of message recipients */ 378 ADDRESS *e_errorqueue; /* the queue for error responses */ 379 long e_msgsize; /* size of the message in bytes */ 380 long e_flags; /* flags, see below */ 381 int e_nrcpts; /* number of recipients */ 382 short e_class; /* msg class (priority, junk, etc.) */ 383 short e_hopcount; /* number of times processed */ 384 short e_nsent; /* number of sends since checkpoint */ 385 short e_sendmode; /* message send mode */ 386 short e_errormode; /* error return mode */ 387 short e_timeoutclass; /* message timeout class */ 388 void (*e_puthdr)__P((MCI *, HDR *, ENVELOPE *)); 389 /* function to put header of message */ 390 void (*e_putbody)__P((MCI *, ENVELOPE *, char *)); 391 /* function to put body of message */ 392 struct envelope *e_parent; /* the message this one encloses */ 393 struct envelope *e_sibling; /* the next envelope of interest */ 394 char *e_bodytype; /* type of message body */ 395 FILE *e_dfp; /* temporary file */ 396 char *e_id; /* code for this entry in queue */ 397 FILE *e_xfp; /* transcript file */ 398 FILE *e_lockfp; /* the lock file for this message */ 399 char *e_message; /* error message */ 400 char *e_statmsg; /* stat msg (changes per delivery) */ 401 char *e_msgboundary; /* MIME-style message part boundary */ 402 char *e_origrcpt; /* original recipient (one only) */ 403 char *e_envid; /* envelope id from MAIL FROM: line */ 404 char *e_status; /* DSN status for this message */ 405 time_t e_dtime; /* time of last delivery attempt */ 406 int e_ntries; /* number of delivery attempts */ 407 dev_t e_dfdev; /* df file's device, for crash recov */ 408 ino_t e_dfino; /* df file's ino, for crash recovery */ 409 char *e_macro[256]; /* macro definitions */ 410 }; 411 412 /* values for e_flags */ 413 #define EF_OLDSTYLE 0x0000001 /* use spaces (not commas) in hdrs */ 414 #define EF_INQUEUE 0x0000002 /* this message is fully queued */ 415 #define EF_NO_BODY_RETN 0x0000004 /* omit message body on error */ 416 #define EF_CLRQUEUE 0x0000008 /* disk copy is no longer needed */ 417 #define EF_SENDRECEIPT 0x0000010 /* send a return receipt */ 418 #define EF_FATALERRS 0x0000020 /* fatal errors occured */ 419 #define EF_KEEPQUEUE 0x0000040 /* keep queue files always */ 420 #define EF_RESPONSE 0x0000080 /* this is an error or return receipt */ 421 #define EF_RESENT 0x0000100 /* this message is being forwarded */ 422 #define EF_VRFYONLY 0x0000200 /* verify only (don't expand aliases) */ 423 #define EF_WARNING 0x0000400 /* warning message has been sent */ 424 #define EF_QUEUERUN 0x0000800 /* this envelope is from queue */ 425 #define EF_GLOBALERRS 0x0001000 /* treat errors as global */ 426 #define EF_PM_NOTIFY 0x0002000 /* send return mail to postmaster */ 427 #define EF_METOO 0x0004000 /* send to me too */ 428 #define EF_LOGSENDER 0x0008000 /* need to log the sender */ 429 #define EF_NORECEIPT 0x0010000 /* suppress all return-receipts */ 430 #define EF_HAS8BIT 0x0020000 /* at least one 8-bit char in body */ 431 #define EF_NL_NOT_EOL 0x0040000 /* don't accept raw NL as EOLine */ 432 #define EF_CRLF_NOT_EOL 0x0080000 /* don't accept CR-LF as EOLine */ 433 #define EF_RET_PARAM 0x0100000 /* RCPT command had RET argument */ 434 #define EF_HAS_DF 0x0200000 /* set when df file is instantiated */ 435 #define EF_IS_MIME 0x0400000 /* really is a MIME message */ 436 437 EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ 438 439 /* functions */ 440 extern ENVELOPE *newenvelope __P((ENVELOPE *, ENVELOPE *)); 441 extern void dropenvelope __P((ENVELOPE *)); 442 extern void clearenvelope __P((ENVELOPE *, bool)); 443 444 extern void putheader __P((MCI *, HDR *, ENVELOPE *)); 445 extern void putbody __P((MCI *, ENVELOPE *, char *)); 446 /* 447 ** Message priority classes. 448 ** 449 ** The message class is read directly from the Priority: header 450 ** field in the message. 451 ** 452 ** CurEnv->e_msgpriority is the number of bytes in the message plus 453 ** the creation time (so that jobs ``tend'' to be ordered correctly), 454 ** adjusted by the message class, the number of recipients, and the 455 ** amount of time the message has been sitting around. This number 456 ** is used to order the queue. Higher values mean LOWER priority. 457 ** 458 ** Each priority class point is worth WkClassFact priority points; 459 ** each recipient is worth WkRecipFact priority points. Each time 460 ** we reprocess a message the priority is adjusted by WkTimeFact. 461 ** WkTimeFact should normally decrease the priority so that jobs 462 ** that have historically failed will be run later; thanks go to 463 ** Jay Lepreau at Utah for pointing out the error in my thinking. 464 ** 465 ** The "class" is this number, unadjusted by the age or size of 466 ** this message. Classes with negative representations will have 467 ** error messages thrown away if they are not local. 468 */ 469 470 struct priority 471 { 472 char *pri_name; /* external name of priority */ 473 int pri_val; /* internal value for same */ 474 }; 475 476 EXTERN struct priority Priorities[MAXPRIORITIES]; 477 EXTERN int NumPriorities; /* pointer into Priorities */ 478 /* 479 ** Rewrite rules. 480 */ 481 482 struct rewrite 483 { 484 char **r_lhs; /* pattern match */ 485 char **r_rhs; /* substitution value */ 486 struct rewrite *r_next;/* next in chain */ 487 }; 488 489 EXTERN struct rewrite *RewriteRules[MAXRWSETS]; 490 491 /* 492 ** Special characters in rewriting rules. 493 ** These are used internally only. 494 ** The COND* rules are actually used in macros rather than in 495 ** rewriting rules, but are given here because they 496 ** cannot conflict. 497 */ 498 499 /* left hand side items */ 500 # define MATCHZANY ((u_char)0220) /* match zero or more tokens */ 501 # define MATCHANY ((u_char)0221) /* match one or more tokens */ 502 # define MATCHONE ((u_char)0222) /* match exactly one token */ 503 # define MATCHCLASS ((u_char)0223) /* match one token in a class */ 504 # define MATCHNCLASS ((u_char)0224) /* match anything not in class */ 505 # define MATCHREPL ((u_char)0225) /* replacement on RHS for above */ 506 507 /* right hand side items */ 508 # define CANONNET ((u_char)0226) /* canonical net, next token */ 509 # define CANONHOST ((u_char)0227) /* canonical host, next token */ 510 # define CANONUSER ((u_char)0230) /* canonical user, next N tokens */ 511 # define CALLSUBR ((u_char)0231) /* call another rewriting set */ 512 513 /* conditionals in macros */ 514 # define CONDIF ((u_char)0232) /* conditional if-then */ 515 # define CONDELSE ((u_char)0233) /* conditional else */ 516 # define CONDFI ((u_char)0234) /* conditional fi */ 517 518 /* bracket characters for host name lookup */ 519 # define HOSTBEGIN ((u_char)0235) /* hostname lookup begin */ 520 # define HOSTEND ((u_char)0236) /* hostname lookup end */ 521 522 /* bracket characters for generalized lookup */ 523 # define LOOKUPBEGIN ((u_char)0205) /* generalized lookup begin */ 524 # define LOOKUPEND ((u_char)0206) /* generalized lookup end */ 525 526 /* macro substitution character */ 527 # define MACROEXPAND ((u_char)0201) /* macro expansion */ 528 # define MACRODEXPAND ((u_char)0202) /* deferred macro expansion */ 529 530 /* to make the code clearer */ 531 # define MATCHZERO CANONHOST 532 533 /* external <==> internal mapping table */ 534 struct metamac 535 { 536 char metaname; /* external code (after $) */ 537 u_char metaval; /* internal code (as above) */ 538 }; 539 540 /* functions */ 541 extern void expand __P((char *, char *, size_t, ENVELOPE *)); 542 extern void define __P((int, char *, ENVELOPE *)); 543 extern char *macvalue __P((int, ENVELOPE *)); 544 extern char *macname __P((int)); 545 extern int macid __P((char *, char **)); 546 /* 547 ** Name canonification short circuit. 548 ** 549 ** If the name server for a host is down, the process of trying to 550 ** canonify the name can hang. This is similar to (but alas, not 551 ** identical to) looking up the name for delivery. This stab type 552 ** caches the result of the name server lookup so we don't hang 553 ** multiple times. 554 */ 555 556 #define NAMECANON struct _namecanon 557 558 NAMECANON 559 { 560 short nc_errno; /* cached errno */ 561 short nc_herrno; /* cached h_errno */ 562 short nc_stat; /* cached exit status code */ 563 short nc_flags; /* flag bits */ 564 char *nc_cname; /* the canonical name */ 565 }; 566 567 /* values for nc_flags */ 568 #define NCF_VALID 0x0001 /* entry valid */ 569 /* 570 ** Mapping functions 571 ** 572 ** These allow arbitrary mappings in the config file. The idea 573 ** (albeit not the implementation) comes from IDA sendmail. 574 */ 575 576 # define MAPCLASS struct _mapclass 577 # define MAP struct _map 578 # define MAXMAPACTIONS 3 /* size of map_actions array */ 579 580 581 /* 582 ** An actual map. 583 */ 584 585 MAP 586 { 587 MAPCLASS *map_class; /* the class of this map */ 588 char *map_mname; /* name of this map */ 589 long map_mflags; /* flags, see below */ 590 char *map_file; /* the (nominal) filename */ 591 ARBPTR_T map_db1; /* the open database ptr */ 592 ARBPTR_T map_db2; /* an "extra" database pointer */ 593 char *map_keycolnm; /* key column name */ 594 char *map_valcolnm; /* value column name */ 595 u_char map_keycolno; /* key column number */ 596 u_char map_valcolno; /* value column number */ 597 char map_coldelim; /* column delimiter */ 598 char *map_app; /* to append to successful matches */ 599 char *map_domain; /* the (nominal) NIS domain */ 600 char *map_rebuild; /* program to run to do auto-rebuild */ 601 time_t map_mtime; /* last database modification time */ 602 short map_specificity; /* specificity of alaases */ 603 MAP *map_stack[MAXMAPSTACK]; /* list for stacked maps */ 604 short map_return[MAXMAPACTIONS]; /* return bitmaps for stacked maps */ 605 }; 606 607 /* bit values for map_mflags */ 608 # define MF_VALID 0x00000001 /* this entry is valid */ 609 # define MF_INCLNULL 0x00000002 /* include null byte in key */ 610 # define MF_OPTIONAL 0x00000004 /* don't complain if map not found */ 611 # define MF_NOFOLDCASE 0x00000008 /* don't fold case in keys */ 612 # define MF_MATCHONLY 0x00000010 /* don't use the map value */ 613 # define MF_OPEN 0x00000020 /* this entry is open */ 614 # define MF_WRITABLE 0x00000040 /* open for writing */ 615 # define MF_ALIAS 0x00000080 /* this is an alias file */ 616 # define MF_TRY0NULL 0x00000100 /* try with no null byte */ 617 # define MF_TRY1NULL 0x00000200 /* try with the null byte */ 618 # define MF_LOCKED 0x00000400 /* this map is currently locked */ 619 # define MF_ALIASWAIT 0x00000800 /* alias map in aliaswait state */ 620 # define MF_IMPL_HASH 0x00001000 /* implicit: underlying hash database */ 621 # define MF_IMPL_NDBM 0x00002000 /* implicit: underlying NDBM database */ 622 # define MF_UNSAFEDB 0x00004000 /* this map is world writable */ 623 # define MF_APPEND 0x00008000 /* append new entry on rebuiled */ 624 # define MF_KEEPQUOTES 0x00010000 /* don't dequote key before lookup */ 625 626 /* indices for map_actions */ 627 # define MA_NOTFOUND 0 /* member map returned "not found" */ 628 # define MA_UNAVAIL 1 /* member map is not available */ 629 # define MA_TRYAGAIN 2 /* member map returns temp failure */ 630 631 /* 632 ** The class of a map -- essentially the functions to call 633 */ 634 635 MAPCLASS 636 { 637 char *map_cname; /* name of this map class */ 638 char *map_ext; /* extension for database file */ 639 short map_cflags; /* flag bits, see below */ 640 bool (*map_parse)__P((MAP *, char *)); 641 /* argument parsing function */ 642 char *(*map_lookup)__P((MAP *, char *, char **, int *)); 643 /* lookup function */ 644 void (*map_store)__P((MAP *, char *, char *)); 645 /* store function */ 646 bool (*map_open)__P((MAP *, int)); 647 /* open function */ 648 void (*map_close)__P((MAP *)); 649 /* close function */ 650 }; 651 652 /* bit values for map_cflags */ 653 #define MCF_ALIASOK 0x0001 /* can be used for aliases */ 654 #define MCF_ALIASONLY 0x0002 /* usable only for aliases */ 655 #define MCF_REBUILDABLE 0x0004 /* can rebuild alias files */ 656 #define MCF_OPTFILE 0x0008 /* file name is optional */ 657 658 /* functions */ 659 extern char *map_rewrite __P((MAP *, char *, int, char **)); 660 extern MAP *makemapentry __P((char *)); 661 /* 662 ** Symbol table definitions 663 */ 664 665 struct symtab 666 { 667 char *s_name; /* name to be entered */ 668 char s_type; /* general type (see below) */ 669 struct symtab *s_next; /* pointer to next in chain */ 670 union 671 { 672 BITMAP sv_class; /* bit-map of word classes */ 673 ADDRESS *sv_addr; /* pointer to address header */ 674 MAILER *sv_mailer; /* pointer to mailer */ 675 char *sv_alias; /* alias */ 676 MAPCLASS sv_mapclass; /* mapping function class */ 677 MAP sv_map; /* mapping function */ 678 char *sv_hostsig; /* host signature */ 679 MCI sv_mci; /* mailer connection info */ 680 NAMECANON sv_namecanon; /* canonical name cache */ 681 int sv_macro; /* macro name => id mapping */ 682 int sv_ruleset; /* ruleset index */ 683 } s_value; 684 }; 685 686 typedef struct symtab STAB; 687 688 /* symbol types */ 689 # define ST_UNDEF 0 /* undefined type */ 690 # define ST_CLASS 1 /* class map */ 691 # define ST_ADDRESS 2 /* an address in parsed format */ 692 # define ST_MAILER 3 /* a mailer header */ 693 # define ST_ALIAS 4 /* an alias */ 694 # define ST_MAPCLASS 5 /* mapping function class */ 695 # define ST_MAP 6 /* mapping function */ 696 # define ST_HOSTSIG 7 /* host signature */ 697 # define ST_NAMECANON 8 /* cached canonical name */ 698 # define ST_MACRO 9 /* macro name to id mapping */ 699 # define ST_RULESET 10 /* ruleset index */ 700 # define ST_MCI 16 /* mailer connection info (offset) */ 701 702 # define s_class s_value.sv_class 703 # define s_address s_value.sv_addr 704 # define s_mailer s_value.sv_mailer 705 # define s_alias s_value.sv_alias 706 # define s_mci s_value.sv_mci 707 # define s_mapclass s_value.sv_mapclass 708 # define s_hostsig s_value.sv_hostsig 709 # define s_map s_value.sv_map 710 # define s_namecanon s_value.sv_namecanon 711 # define s_macro s_value.sv_macro 712 # define s_ruleset s_value.sv_ruleset 713 714 extern STAB *stab __P((char *, int, int)); 715 extern void stabapply __P((void (*)(STAB *, int), int)); 716 717 /* opcodes to stab */ 718 # define ST_FIND 0 /* find entry */ 719 # define ST_ENTER 1 /* enter if not there */ 720 /* 721 ** STRUCT EVENT -- event queue. 722 ** 723 ** Maintained in sorted order. 724 ** 725 ** We store the pid of the process that set this event to insure 726 ** that when we fork we will not take events intended for the parent. 727 */ 728 729 struct event 730 { 731 time_t ev_time; /* time of the function call */ 732 void (*ev_func)__P((int)); 733 /* function to call */ 734 int ev_arg; /* argument to ev_func */ 735 int ev_pid; /* pid that set this event */ 736 struct event *ev_link; /* link to next item */ 737 }; 738 739 typedef struct event EVENT; 740 741 EXTERN EVENT *EventQueue; /* head of event queue */ 742 743 /* functions */ 744 extern EVENT *setevent __P((time_t, void(*)(), int)); 745 extern void clrevent __P((EVENT *)); 746 /* 747 ** Operation, send, error, and MIME modes 748 ** 749 ** The operation mode describes the basic operation of sendmail. 750 ** This can be set from the command line, and is "send mail" by 751 ** default. 752 ** 753 ** The send mode tells how to send mail. It can be set in the 754 ** configuration file. It's setting determines how quickly the 755 ** mail will be delivered versus the load on your system. If the 756 ** -v (verbose) flag is given, it will be forced to SM_DELIVER 757 ** mode. 758 ** 759 ** The error mode tells how to return errors. 760 */ 761 762 EXTERN char OpMode; /* operation mode, see below */ 763 764 #define MD_DELIVER 'm' /* be a mail sender */ 765 #define MD_SMTP 's' /* run SMTP on standard input */ 766 #define MD_ARPAFTP 'a' /* obsolete ARPANET mode (Grey Book) */ 767 #define MD_DAEMON 'd' /* run as a daemon */ 768 #define MD_VERIFY 'v' /* verify: don't collect or deliver */ 769 #define MD_TEST 't' /* test mode: resolve addrs only */ 770 #define MD_INITALIAS 'i' /* initialize alias database */ 771 #define MD_PRINT 'p' /* print the queue */ 772 #define MD_FREEZE 'z' /* freeze the configuration file */ 773 774 775 /* values for e_sendmode -- send modes */ 776 #define SM_DELIVER 'i' /* interactive delivery */ 777 #define SM_FORK 'b' /* deliver in background */ 778 #define SM_QUEUE 'q' /* queue, don't deliver */ 779 #define SM_VERIFY 'v' /* verify only (used internally) */ 780 781 /* used only as a parameter to sendall */ 782 #define SM_DEFAULT '\0' /* unspecified, use SendMode */ 783 784 785 /* values for e_errormode -- error handling modes */ 786 #define EM_PRINT 'p' /* print errors */ 787 #define EM_MAIL 'm' /* mail back errors */ 788 #define EM_WRITE 'w' /* write back errors */ 789 #define EM_BERKNET 'e' /* special berknet processing */ 790 #define EM_QUIET 'q' /* don't print messages (stat only) */ 791 792 793 /* MIME processing mode */ 794 EXTERN int MimeMode; 795 796 /* bit values for MimeMode */ 797 #define MM_CVTMIME 0x0001 /* convert 8 to 7 bit MIME */ 798 #define MM_PASS8BIT 0x0002 /* just send 8 bit data blind */ 799 #define MM_MIME8BIT 0x0004 /* convert 8-bit data to MIME */ 800 801 /* queue sorting order algorithm */ 802 EXTERN int QueueSortOrder; 803 804 #define QS_BYPRIORITY 0 /* sort by message priority */ 805 #define QS_BYHOST 1 /* sort by first host name */ 806 807 808 /* how to handle messages without any recipient addresses */ 809 EXTERN int NoRecipientAction; 810 811 #define NRA_NO_ACTION 0 /* just leave it as is */ 812 #define NRA_ADD_TO 1 /* add To: header */ 813 #define NRA_ADD_APPARENTLY_TO 2 /* add Apparently-To: header */ 814 #define NRA_ADD_BCC 3 /* add empty Bcc: header */ 815 #define NRA_ADD_TO_UNDISCLOSED 4 /* add To: undisclosed:; header */ 816 817 818 /* flags to putxline */ 819 #define PXLF_NOTHINGSPECIAL 0 /* no special mapping */ 820 #define PXLF_MAPFROM 0x0001 /* map From_ to >From_ */ 821 #define PXLF_STRIP8BIT 0x0002 /* strip 8th bit *e 822 /* 823 ** Additional definitions 824 */ 825 826 827 /* 828 ** Privacy flags 829 ** These are bit values for the PrivacyFlags word. 830 */ 831 832 #define PRIV_PUBLIC 0 /* what have I got to hide? */ 833 #define PRIV_NEEDMAILHELO 0x0001 /* insist on HELO for MAIL, at least */ 834 #define PRIV_NEEDEXPNHELO 0x0002 /* insist on HELO for EXPN */ 835 #define PRIV_NEEDVRFYHELO 0x0004 /* insist on HELO for VRFY */ 836 #define PRIV_NOEXPN 0x0008 /* disallow EXPN command entirely */ 837 #define PRIV_NOVRFY 0x0010 /* disallow VRFY command entirely */ 838 #define PRIV_AUTHWARNINGS 0x0020 /* flag possible authorization probs */ 839 #define PRIV_NORECEIPTS 0x0040 /* disallow return receipts */ 840 #define PRIV_RESTRICTMAILQ 0x1000 /* restrict mailq command */ 841 #define PRIV_RESTRICTQRUN 0x2000 /* restrict queue run */ 842 #define PRIV_GOAWAY 0x0fff /* don't give no info, anyway, anyhow */ 843 844 /* struct defining such things */ 845 struct prival 846 { 847 char *pv_name; /* name of privacy flag */ 848 int pv_flag; /* numeric level */ 849 }; 850 851 852 /* 853 ** Flags passed to remotename, parseaddr, allocaddr, and buildaddr. 854 */ 855 856 #define RF_SENDERADDR 0x001 /* this is a sender address */ 857 #define RF_HEADERADDR 0x002 /* this is a header address */ 858 #define RF_CANONICAL 0x004 /* strip comment information */ 859 #define RF_ADDDOMAIN 0x008 /* OK to do domain extension */ 860 #define RF_COPYPARSE 0x010 /* copy parsed user & host */ 861 #define RF_COPYPADDR 0x020 /* copy print address */ 862 #define RF_COPYALL (RF_COPYPARSE|RF_COPYPADDR) 863 #define RF_COPYNONE 0 864 865 866 /* 867 ** Flags passed to safefile. 868 */ 869 870 #define SFF_ANYFILE 0 /* no special restrictions */ 871 #define SFF_MUSTOWN 0x0001 /* user must own this file */ 872 #define SFF_NOSLINK 0x0002 /* file cannot be a symbolic link */ 873 #define SFF_ROOTOK 0x0004 /* ok for root to own this file */ 874 #define SFF_RUNASREALUID 0x0008 /* if no ctladdr, run as real uid */ 875 #define SFF_NOPATHCHECK 0x0010 /* don't bother checking dir path */ 876 #define SFF_SETUIDOK 0x0020 /* setuid files are ok */ 877 #define SFF_CREAT 0x0040 /* ok to create file if necessary */ 878 #define SFF_REGONLY 0x0080 /* regular files only */ 879 880 /* flags that are actually specific to safefopen */ 881 #define SFF_OPENASROOT 0x1000 /* open as root instead of real user */ 882 883 884 /* 885 ** Flags passed to mime8to7. 886 */ 887 888 #define M87F_OUTER 0 /* outer context */ 889 #define M87F_NO8BIT 0x0001 /* can't have 8-bit in this section */ 890 #define M87F_DIGEST 0x0002 /* processing multipart/digest */ 891 892 893 /* 894 ** Regular UNIX sockaddrs are too small to handle ISO addresses, so 895 ** we are forced to declare a supertype here. 896 */ 897 898 union bigsockaddr 899 { 900 struct sockaddr sa; /* general version */ 901 #ifdef NETUNIX 902 struct sockaddr_un sunix; /* UNIX family */ 903 #endif 904 #ifdef NETINET 905 struct sockaddr_in sin; /* INET family */ 906 #endif 907 #ifdef NETISO 908 struct sockaddr_iso siso; /* ISO family */ 909 #endif 910 #ifdef NETNS 911 struct sockaddr_ns sns; /* XNS family */ 912 #endif 913 #ifdef NETX25 914 struct sockaddr_x25 sx25; /* X.25 family */ 915 #endif 916 }; 917 918 #define SOCKADDR union bigsockaddr 919 920 921 /* 922 ** Vendor codes 923 ** 924 ** Vendors can customize sendmail to add special behaviour, 925 ** generally for back compatibility. Ideally, this should 926 ** be set up in the .cf file using the "V" command. However, 927 ** it's quite reasonable for some vendors to want the default 928 ** be their old version; this can be set using 929 ** -DVENDOR_DEFAULT=VENDOR_xxx 930 ** in the Makefile. 931 ** 932 ** Vendors should apply to sendmail@CS.Berkeley.EDU for 933 ** unique vendor codes. 934 */ 935 936 #define VENDOR_BERKELEY 1 /* Berkeley-native configuration file */ 937 #define VENDOR_SUN 2 /* Sun-native configuration file */ 938 #define VENDOR_HP 3 /* Hewlett-Packard specific config syntax */ 939 940 EXTERN int VendorCode; /* vendor-specific operation enhancements */ 941 /* 942 ** Global variables. 943 */ 944 945 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 946 EXTERN bool MeToo; /* send to the sender also */ 947 EXTERN bool IgnrDot; /* don't let dot end messages */ 948 EXTERN bool SaveFrom; /* save leading "From" lines */ 949 EXTERN bool Verbose; /* set if blow-by-blow desired */ 950 EXTERN bool GrabTo; /* if set, get recipients from msg */ 951 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 952 EXTERN bool HoldErrs; /* only output errors to transcript */ 953 EXTERN bool NoConnect; /* don't connect to non-local mailers */ 954 EXTERN bool SuperSafe; /* be extra careful, even if expensive */ 955 EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ 956 EXTERN bool AutoRebuild; /* auto-rebuild the alias database as needed */ 957 EXTERN bool CheckAliases; /* parse addresses during newaliases */ 958 EXTERN bool NoAlias; /* suppress aliasing */ 959 EXTERN bool UseNameServer; /* using DNS -- interpret h_errno & MX RRs */ 960 EXTERN bool UseHesiod; /* using Hesiod -- interpret Hesiod errors */ 961 EXTERN bool SevenBitInput; /* force 7-bit data on input */ 962 EXTERN bool HasEightBits; /* has at least one eight bit input byte */ 963 EXTERN time_t SafeAlias; /* interval to wait until @:@ in alias file */ 964 EXTERN FILE *InChannel; /* input connection */ 965 EXTERN FILE *OutChannel; /* output connection */ 966 EXTERN char *RealUserName; /* real user name of caller */ 967 EXTERN uid_t RealUid; /* real uid of caller */ 968 EXTERN gid_t RealGid; /* real gid of caller */ 969 EXTERN uid_t DefUid; /* default uid to run as */ 970 EXTERN gid_t DefGid; /* default gid to run as */ 971 EXTERN char *DefUser; /* default user to run as (from DefUid) */ 972 EXTERN int OldUmask; /* umask when sendmail starts up */ 973 EXTERN int Errors; /* set if errors (local to single pass) */ 974 EXTERN int ExitStat; /* exit status code */ 975 EXTERN int LineNumber; /* line number in current input */ 976 EXTERN int LogLevel; /* level of logging to perform */ 977 EXTERN int FileMode; /* mode on files */ 978 EXTERN int QueueLA; /* load average starting forced queueing */ 979 EXTERN int RefuseLA; /* load average refusing connections are */ 980 EXTERN int CurrentLA; /* current load average */ 981 EXTERN long QueueFactor; /* slope of queue function */ 982 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 983 EXTERN char *HelpFile; /* location of SMTP help file */ 984 EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ 985 EXTERN char *StatFile; /* location of statistics summary */ 986 EXTERN char *QueueDir; /* location of queue directory */ 987 EXTERN char *FileName; /* name to print on error messages */ 988 EXTERN char *SmtpPhase; /* current phase in SMTP processing */ 989 EXTERN char *MyHostName; /* name of this host for SMTP messages */ 990 EXTERN char *RealHostName; /* name of host we are talking to */ 991 EXTERN SOCKADDR RealHostAddr; /* address of host we are talking to */ 992 EXTERN char *CurHostName; /* current host we are dealing with */ 993 EXTERN jmp_buf TopFrame; /* branch-to-top-of-loop-on-error frame */ 994 EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ 995 EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ 996 EXTERN bool SendMIMEErrors; /* send error messages in MIME format */ 997 EXTERN bool MatchGecos; /* look for user names in gecos field */ 998 EXTERN bool UseErrorsTo; /* use Errors-To: header (back compat) */ 999 EXTERN bool TryNullMXList; /* if we are the best MX, try host directly */ 1000 EXTERN bool InChild; /* true if running in an SMTP subprocess */ 1001 EXTERN bool DisConnected; /* running with OutChannel redirected to xf */ 1002 EXTERN bool ColonOkInAddr; /* single colon legal in address */ 1003 EXTERN bool NoMXforCanon; /* don't use MX records when canonifying */ 1004 EXTERN char SpaceSub; /* substitution for <lwsp> */ 1005 EXTERN int PrivacyFlags; /* privacy flags */ 1006 EXTERN char *ConfFile; /* location of configuration file [conf.c] */ 1007 extern char *PidFile; /* location of proc id file [conf.c] */ 1008 extern ADDRESS NullAddress; /* a null (template) address [main.c] */ 1009 EXTERN long WkClassFact; /* multiplier for message class -> priority */ 1010 EXTERN long WkRecipFact; /* multiplier for # of recipients -> priority */ 1011 EXTERN long WkTimeFact; /* priority offset each time this job is run */ 1012 EXTERN char *UdbSpec; /* user database source spec */ 1013 EXTERN int MaxHopCount; /* max # of hops until bounce */ 1014 EXTERN int ConfigLevel; /* config file level */ 1015 EXTERN char *TimeZoneSpec; /* override time zone specification */ 1016 EXTERN char *ForwardPath; /* path to search for .forward files */ 1017 EXTERN long MinBlocksFree; /* min # of blocks free on queue fs */ 1018 EXTERN char *FallBackMX; /* fall back MX host */ 1019 EXTERN long MaxMessageSize; /* advertised max size we will accept */ 1020 EXTERN time_t MaxHostStatAge; /* max age of cached host status info */ 1021 EXTERN time_t MinQueueAge; /* min delivery interval */ 1022 EXTERN time_t DialDelay; /* delay between dial-on-demand tries */ 1023 EXTERN char *SafeFileEnv; /* chroot location for file delivery */ 1024 EXTERN char *HostsFile; /* path to /etc/hosts file */ 1025 EXTERN int MaxQueueRun; /* maximum number of jobs in one queue run */ 1026 EXTERN char *ServiceSwitchFile; /* backup service switch */ 1027 EXTERN char *DefaultCharSet; /* default character set for MIME */ 1028 EXTERN int DeliveryNiceness; /* how nice to be during delivery */ 1029 EXTERN char *PostMasterCopy; /* address to get errs cc's */ 1030 EXTERN int CheckpointInterval; /* queue file checkpoint interval */ 1031 EXTERN bool DontPruneRoutes; /* don't prune source routes */ 1032 EXTERN int MaxMciCache; /* maximum entries in MCI cache */ 1033 EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ 1034 EXTERN char *QueueLimitRecipient; /* limit queue runs to this recipient */ 1035 EXTERN char *QueueLimitSender; /* limit queue runs to this sender */ 1036 EXTERN char *QueueLimitId; /* limit queue runs to this id */ 1037 EXTERN FILE *TrafficLogFile; /* file in which to log all traffic */ 1038 EXTERN char *UserEnviron[MAXUSERENVIRON + 1]; 1039 /* saved user environment */ 1040 extern int errno; 1041 1042 1043 /* 1044 ** Timeouts 1045 ** 1046 ** Indicated values are the MINIMUM per RFC 1123 section 5.3.2. 1047 */ 1048 1049 EXTERN struct 1050 { 1051 /* RFC 1123-specified timeouts [minimum value] */ 1052 time_t to_initial; /* initial greeting timeout [5m] */ 1053 time_t to_mail; /* MAIL command [5m] */ 1054 time_t to_rcpt; /* RCPT command [5m] */ 1055 time_t to_datainit; /* DATA initiation [2m] */ 1056 time_t to_datablock; /* DATA block [3m] */ 1057 time_t to_datafinal; /* DATA completion [10m] */ 1058 time_t to_nextcommand; /* next command [5m] */ 1059 /* following timeouts are not mentioned in RFC 1123 */ 1060 time_t to_rset; /* RSET command */ 1061 time_t to_helo; /* HELO command */ 1062 time_t to_quit; /* QUIT command */ 1063 time_t to_miscshort; /* misc short commands (NOOP, VERB, etc) */ 1064 time_t to_ident; /* IDENT protocol requests */ 1065 time_t to_fileopen; /* opening :include: and .forward files */ 1066 /* following are per message */ 1067 time_t to_q_return[MAXTOCLASS]; /* queue return timeouts */ 1068 time_t to_q_warning[MAXTOCLASS]; /* queue warning timeouts */ 1069 } TimeOuts; 1070 1071 /* timeout classes for return and warning timeouts */ 1072 # define TOC_NORMAL 0 /* normal delivery */ 1073 # define TOC_URGENT 1 /* urgent delivery */ 1074 # define TOC_NONURGENT 2 /* non-urgent delivery */ 1075 1076 1077 /* 1078 ** Trace information 1079 */ 1080 1081 /* trace vector and macros for debugging flags */ 1082 EXTERN u_char tTdvect[100]; 1083 # define tTd(flag, level) (tTdvect[flag] >= level) 1084 # define tTdlevel(flag) (tTdvect[flag]) 1085 /* 1086 ** Miscellaneous information. 1087 */ 1088 1089 1090 1091 /* 1092 ** Some in-line functions 1093 */ 1094 1095 /* set exit status */ 1096 #define setstat(s) { \ 1097 if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ 1098 ExitStat = s; \ 1099 } 1100 1101 /* make a copy of a string */ 1102 #define newstr(s) strcpy(xalloc(strlen(s) + 1), s) 1103 1104 #define STRUCTCOPY(s, d) d = s 1105 1106 1107 /* 1108 ** Declarations of useful functions 1109 */ 1110 1111 extern char *xalloc __P((int)); 1112 extern FILE *dfopen __P((char *, int, int)); 1113 extern char *sfgets __P((char *, int, FILE *, time_t, char *)); 1114 extern char *queuename __P((ENVELOPE *, int)); 1115 extern time_t curtime __P(()); 1116 extern bool transienterror __P((int)); 1117 extern char *fgetfolded __P((char *, int, FILE *)); 1118 extern char *username __P(()); 1119 extern char *pintvl __P((time_t, bool)); 1120 extern char *anynet_ntoa __P((SOCKADDR *)); 1121 extern bool shouldqueue __P((long, time_t)); 1122 extern bool lockfile __P((int, char *, char *, int)); 1123 extern char *hostsignature __P((MAILER *, char *, ENVELOPE *)); 1124 extern void openxscript __P((ENVELOPE *)); 1125 extern void closexscript __P((ENVELOPE *)); 1126 extern char *shortenstring __P((const char *, int)); 1127 extern bool usershellok __P((char *)); 1128 extern void commaize __P((HDR *, char *, bool, MCI *, ENVELOPE *)); 1129 extern char *hvalue __P((char *, HDR *)); 1130 extern char *defcharset __P((ENVELOPE *)); 1131 extern bool wordinclass __P((char *, int)); 1132 extern char *denlstring __P((char *, bool, bool)); 1133 extern void makelower __P((char *)); 1134 extern void rebuildaliases __P((MAP *, bool)); 1135 extern void readaliases __P((MAP *, FILE *, bool, bool)); 1136 extern void finis __P(()); 1137 extern void setsender __P((char *, ENVELOPE *, char **, bool)); 1138 extern FILE *safefopen __P((char *, int, int, int)); 1139 extern void xputs __P((const char *)); 1140 extern void logsender __P((ENVELOPE *, char *)); 1141 extern void smtprset __P((MAILER *, MCI *, ENVELOPE *)); 1142 extern void smtpquit __P((MAILER *, MCI *, ENVELOPE *)); 1143 extern void setuserenv __P((const char *, const char *)); 1144 extern void disconnect __P((int, ENVELOPE *)); 1145 extern void putxline __P((char *, MCI *, int)); 1146 extern void dumpfd __P((int, bool, bool)); 1147 extern void makemailer __P((char *)); 1148 extern void putfromline __P((MCI *, ENVELOPE *)); 1149 extern void setoption __P((int, char *, bool, bool, ENVELOPE *)); 1150 extern void setclass __P((int, char *)); 1151 extern void inittimeouts __P((char *)); 1152 extern void logdelivery __P((MAILER *, MCI *, const char *, ADDRESS *, time_t, ENVELOPE *)); 1153 extern void giveresponse __P((int, MAILER *, MCI *, ADDRESS *, time_t, ENVELOPE *)); 1154 1155 extern const char *errstring __P((int)); 1156 extern sigfunc_t setsignal __P((int, sigfunc_t)); 1157 extern struct hostent *sm_gethostbyname __P((char *)); 1158 extern struct hostent *sm_gethostbyaddr __P((char *, int, int)); 1159 extern struct passwd *sm_getpwnam __P((char *)); 1160 extern struct passwd *sm_getpwuid __P((UID_T)); 1161 1162 #ifdef XDEBUG 1163 extern void checkfd012 __P((char *)); 1164 #endif 1165 1166 /* ellipsis is a different case though */ 1167 #ifdef __STDC__ 1168 extern void auth_warning(ENVELOPE *, const char *, ...); 1169 extern void syserr(const char *, ...); 1170 extern void usrerr(const char *, ...); 1171 extern void message(const char *, ...); 1172 extern void nmessage(const char *, ...); 1173 #else 1174 extern void auth_warning(); 1175 extern void syserr(); 1176 extern void usrerr(); 1177 extern void message(); 1178 extern void nmessage(); 1179 #endif 1180