1 /* 2 * Copyright (c) 1983 Eric P. Allman 3 * Copyright (c) 1988 Regents of the University of California. 4 * All rights reserved. 5 * 6 * %sccs.include.redist.c% 7 * 8 * @(#)sendmail.h 6.23 (Berkeley) 02/26/93 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 6.23 02/26/93"; 19 # endif lint 20 # else /* _DEFINE */ 21 # define EXTERN extern 22 # endif /* _DEFINE */ 23 24 # include <stddef.h> 25 # include <stdlib.h> 26 # include <stdio.h> 27 # include <ctype.h> 28 # include <setjmp.h> 29 # include <sysexits.h> 30 # include <string.h> 31 # include <time.h> 32 # include <errno.h> 33 34 # include "conf.h" 35 # include "useful.h" 36 37 # ifdef LOG 38 # include <syslog.h> 39 # endif /* LOG */ 40 41 # ifdef DAEMON 42 # include <sys/socket.h> 43 # include <netinet/in.h> 44 # endif /* DAEMON */ 45 46 47 48 49 /* 50 ** Data structure for bit maps. 51 ** 52 ** Each bit in this map can be referenced by an ascii character. 53 ** This is 128 possible bits, or 12 8-bit bytes. 54 */ 55 56 #define BITMAPBYTES 16 /* number of bytes in a bit map */ 57 #define BYTEBITS 8 /* number of bits in a byte */ 58 59 /* internal macros */ 60 #define _BITWORD(bit) (bit / (BYTEBITS * sizeof (int))) 61 #define _BITBIT(bit) (1 << (bit % (BYTEBITS * sizeof (int)))) 62 63 typedef int BITMAP[BITMAPBYTES / sizeof (int)]; 64 65 /* test bit number N */ 66 #define bitnset(bit, map) ((map)[_BITWORD(bit)] & _BITBIT(bit)) 67 68 /* set bit number N */ 69 #define setbitn(bit, map) (map)[_BITWORD(bit)] |= _BITBIT(bit) 70 71 /* clear bit number N */ 72 #define clrbitn(bit, map) (map)[_BITWORD(bit)] &= ~_BITBIT(bit) 73 74 /* clear an entire bit map */ 75 #define clrbitmap(map) bzero((char *) map, BITMAPBYTES) 76 /* 77 ** Address structure. 78 ** Addresses are stored internally in this structure. 79 */ 80 81 struct address 82 { 83 char *q_paddr; /* the printname for the address */ 84 char *q_user; /* user name */ 85 char *q_ruser; /* real user name, or NULL if q_user */ 86 char *q_host; /* host name */ 87 struct mailer *q_mailer; /* mailer to use */ 88 u_short q_flags; /* status flags, see below */ 89 uid_t q_uid; /* user-id of receiver (if known) */ 90 gid_t q_gid; /* group-id of receiver (if known) */ 91 char *q_home; /* home dir (local mailer only) */ 92 char *q_fullname; /* full name if known */ 93 struct address *q_next; /* chain */ 94 struct address *q_alias; /* address this results from */ 95 char *q_owner; /* owner of q_alias */ 96 struct address *q_tchain; /* temporary use chain */ 97 time_t q_timeout; /* timeout for this address */ 98 }; 99 100 typedef struct address ADDRESS; 101 102 # define QDONTSEND 000001 /* don't send to this address */ 103 # define QBADADDR 000002 /* this address is verified bad */ 104 # define QGOODUID 000004 /* the q_uid q_gid fields are good */ 105 # define QPRIMARY 000010 /* set from argv */ 106 # define QQUEUEUP 000020 /* queue for later transmission */ 107 # define QSENT 000040 /* has been successfully delivered */ 108 # define QNOTREMOTE 000100 /* not an address for remote forwarding */ 109 # define QSELFREF 000200 /* this address references itself */ 110 # define QVERIFIED 000400 /* verified, but not expanded */ 111 /* 112 ** Mailer definition structure. 113 ** Every mailer known to the system is declared in this 114 ** structure. It defines the pathname of the mailer, some 115 ** flags associated with it, and the argument vector to 116 ** pass to it. The flags are defined in conf.c 117 ** 118 ** The argument vector is expanded before actual use. All 119 ** words except the first are passed through the macro 120 ** processor. 121 */ 122 123 struct mailer 124 { 125 char *m_name; /* symbolic name of this mailer */ 126 char *m_mailer; /* pathname of the mailer to use */ 127 BITMAP m_flags; /* status flags, see below */ 128 short m_mno; /* mailer number internally */ 129 char **m_argv; /* template argument vector */ 130 short m_sh_rwset; /* rewrite set: sender header addresses */ 131 short m_se_rwset; /* rewrite set: sender envelope addresses */ 132 short m_rh_rwset; /* rewrite set: recipient header addresses */ 133 short m_re_rwset; /* rewrite set: recipient envelope addresses */ 134 char *m_eol; /* end of line string */ 135 long m_maxsize; /* size limit on message to this mailer */ 136 int m_linelimit; /* max # characters per line */ 137 }; 138 139 typedef struct mailer MAILER; 140 141 /* bits for m_flags */ 142 # define M_NOCOMMENT 'c' /* don't include comment part of address */ 143 # define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ 144 /* 'D' /* CF: include Date: */ 145 # define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ 146 # define M_ESCFROM 'E' /* escape From lines to >From */ 147 # define M_FOPT 'f' /* mailer takes picky -f flag */ 148 /* 'F' /* CF: include From: or Resent-From: */ 149 # define M_HST_UPPER 'h' /* preserve host case distinction */ 150 /* 'H' /* UIUC: MAIL11V3: preview headers */ 151 # define M_INTERNAL 'I' /* SMTP to another sendmail site */ 152 # define M_LOCALMAILER 'l' /* delivery is to this host */ 153 # define M_LIMITS 'L' /* must enforce SMTP line limits */ 154 # define M_MUSER 'm' /* can handle multiple users at once */ 155 /* 'M' /* CF: include Message-Id: */ 156 # define M_NHDR 'n' /* don't insert From line */ 157 /* 'N' /* UIUC: MAIL11V3: DATA returns multi-status */ 158 # define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ 159 /* 'P' /* CF: include Return-Path: */ 160 # define M_ROPT 'r' /* mailer takes picky -r flag */ 161 # define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */ 162 # define M_STRIPQ 's' /* strip quote chars from user/host */ 163 # define M_RESTR 'S' /* must be daemon to execute */ 164 # define M_USR_UPPER 'u' /* preserve user case distinction */ 165 # define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ 166 /* 'V' /* UIUC: !-relativize all addresses */ 167 # define M_XDOT 'X' /* use hidden-dot algorithm */ 168 # define M_7BITS '7' /* use 7-bit path */ 169 170 EXTERN MAILER *Mailer[MAXMAILERS+1]; 171 172 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 173 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 174 EXTERN MAILER *FileMailer; /* ptr to *file* mailer */ 175 EXTERN MAILER *InclMailer; /* ptr to *include* mailer */ 176 /* 177 ** Header structure. 178 ** This structure is used internally to store header items. 179 */ 180 181 struct header 182 { 183 char *h_field; /* the name of the field */ 184 char *h_value; /* the value of that field */ 185 struct header *h_link; /* the next header */ 186 u_short h_flags; /* status bits, see below */ 187 BITMAP h_mflags; /* m_flags bits needed */ 188 }; 189 190 typedef struct header HDR; 191 192 /* 193 ** Header information structure. 194 ** Defined in conf.c, this struct declares the header fields 195 ** that have some magic meaning. 196 */ 197 198 struct hdrinfo 199 { 200 char *hi_field; /* the name of the field */ 201 u_short hi_flags; /* status bits, see below */ 202 }; 203 204 extern struct hdrinfo HdrInfo[]; 205 206 /* bits for h_flags and hi_flags */ 207 # define H_EOH 00001 /* this field terminates header */ 208 # define H_RCPT 00002 /* contains recipient addresses */ 209 # define H_DEFAULT 00004 /* if another value is found, drop this */ 210 # define H_RESENT 00010 /* this address is a "Resent-..." address */ 211 # define H_CHECK 00020 /* check h_mflags against m_flags */ 212 # define H_ACHECK 00040 /* ditto, but always (not just default) */ 213 # define H_FORCE 00100 /* force this field, even if default */ 214 # define H_TRACE 00200 /* this field contains trace information */ 215 # define H_FROM 00400 /* this is a from-type field */ 216 # define H_VALID 01000 /* this field has a validated value */ 217 # define H_RECEIPTTO 02000 /* this field has return receipt info */ 218 # define H_ERRORSTO 04000 /* this field has error address info */ 219 /* 220 ** Envelope structure. 221 ** This structure defines the message itself. There is usually 222 ** only one of these -- for the message that we originally read 223 ** and which is our primary interest -- but other envelopes can 224 ** be generated during processing. For example, error messages 225 ** will have their own envelope. 226 */ 227 228 struct envelope 229 { 230 HDR *e_header; /* head of header list */ 231 long e_msgpriority; /* adjusted priority of this message */ 232 time_t e_ctime; /* time message appeared in the queue */ 233 char *e_to; /* the target person */ 234 char *e_receiptto; /* return receipt address */ 235 ADDRESS e_from; /* the person it is from */ 236 char *e_sender; /* string version of from person */ 237 char *e_returnpath; /* string version of return path */ 238 char **e_fromdomain; /* the domain part of the sender */ 239 ADDRESS *e_sendqueue; /* list of message recipients */ 240 ADDRESS *e_errorqueue; /* the queue for error responses */ 241 long e_msgsize; /* size of the message in bytes */ 242 int e_nrcpts; /* number of recipients */ 243 short e_class; /* msg class (priority, junk, etc.) */ 244 short e_flags; /* flags, see below */ 245 short e_hopcount; /* number of times processed */ 246 short e_nsent; /* number of sends since checkpoint */ 247 int (*e_puthdr)(); /* function to put header of message */ 248 int (*e_putbody)(); /* function to put body of message */ 249 struct envelope *e_parent; /* the message this one encloses */ 250 struct envelope *e_sibling; /* the next envelope of interest */ 251 char *e_df; /* location of temp file */ 252 FILE *e_dfp; /* temporary file */ 253 char *e_id; /* code for this entry in queue */ 254 FILE *e_xfp; /* transcript file */ 255 FILE *e_lockfp; /* the lock file for this message */ 256 char *e_message; /* error message */ 257 char *e_macro[128]; /* macro definitions */ 258 }; 259 260 typedef struct envelope ENVELOPE; 261 262 /* values for e_flags */ 263 #define EF_OLDSTYLE 000001 /* use spaces (not commas) in hdrs */ 264 #define EF_INQUEUE 000002 /* this message is fully queued */ 265 #define EF_TIMEOUT 000004 /* this message is too old */ 266 #define EF_CLRQUEUE 000010 /* disk copy is no longer needed */ 267 #define EF_SENDRECEIPT 000020 /* send a return receipt */ 268 #define EF_FATALERRS 000040 /* fatal errors occured */ 269 #define EF_KEEPQUEUE 000100 /* keep queue files always */ 270 #define EF_RESPONSE 000200 /* this is an error or return receipt */ 271 #define EF_RESENT 000400 /* this message is being forwarded */ 272 #define EF_VRFYONLY 001000 /* verify only (don't expand aliases) */ 273 274 EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ 275 /* 276 ** Message priority classes. 277 ** 278 ** The message class is read directly from the Priority: header 279 ** field in the message. 280 ** 281 ** CurEnv->e_msgpriority is the number of bytes in the message plus 282 ** the creation time (so that jobs ``tend'' to be ordered correctly), 283 ** adjusted by the message class, the number of recipients, and the 284 ** amount of time the message has been sitting around. This number 285 ** is used to order the queue. Higher values mean LOWER priority. 286 ** 287 ** Each priority class point is worth WkClassFact priority points; 288 ** each recipient is worth WkRecipFact priority points. Each time 289 ** we reprocess a message the priority is adjusted by WkTimeFact. 290 ** WkTimeFact should normally decrease the priority so that jobs 291 ** that have historically failed will be run later; thanks go to 292 ** Jay Lepreau at Utah for pointing out the error in my thinking. 293 ** 294 ** The "class" is this number, unadjusted by the age or size of 295 ** this message. Classes with negative representations will have 296 ** error messages thrown away if they are not local. 297 */ 298 299 struct priority 300 { 301 char *pri_name; /* external name of priority */ 302 int pri_val; /* internal value for same */ 303 }; 304 305 EXTERN struct priority Priorities[MAXPRIORITIES]; 306 EXTERN int NumPriorities; /* pointer into Priorities */ 307 /* 308 ** Rewrite rules. 309 */ 310 311 struct rewrite 312 { 313 char **r_lhs; /* pattern match */ 314 char **r_rhs; /* substitution value */ 315 struct rewrite *r_next;/* next in chain */ 316 }; 317 318 EXTERN struct rewrite *RewriteRules[MAXRWSETS]; 319 320 /* 321 ** Special characters in rewriting rules. 322 ** These are used internally only. 323 ** The COND* rules are actually used in macros rather than in 324 ** rewriting rules, but are given here because they 325 ** cannot conflict. 326 */ 327 328 /* left hand side items */ 329 # define MATCHZANY 0220 /* match zero or more tokens */ 330 # define MATCHANY 0221 /* match one or more tokens */ 331 # define MATCHONE 0222 /* match exactly one token */ 332 # define MATCHCLASS 0223 /* match one token in a class */ 333 # define MATCHNCLASS 0224 /* match anything not in class */ 334 # define MATCHREPL 0225 /* replacement on RHS for above */ 335 336 /* right hand side items */ 337 # define CANONNET 0226 /* canonical net, next token */ 338 # define CANONHOST 0227 /* canonical host, next token */ 339 # define CANONUSER 0230 /* canonical user, next N tokens */ 340 # define CALLSUBR 0231 /* call another rewriting set */ 341 342 /* conditionals in macros */ 343 # define CONDIF 0232 /* conditional if-then */ 344 # define CONDELSE 0233 /* conditional else */ 345 # define CONDFI 0234 /* conditional fi */ 346 347 /* bracket characters for host name lookup */ 348 # define HOSTBEGIN 0235 /* hostname lookup begin */ 349 # define HOSTEND 0236 /* hostname lookup end */ 350 351 /* bracket characters for generalized lookup */ 352 # define LOOKUPBEGIN 0205 /* generalized lookup begin */ 353 # define LOOKUPEND 0206 /* generalized lookup end */ 354 355 /* macro substitution character */ 356 # define MACROEXPAND 0201 /* macro expansion */ 357 358 /* external <==> internal mapping table */ 359 struct metamac 360 { 361 char metaname; /* external code (after $) */ 362 char metaval; /* internal code (as above) */ 363 }; 364 /* 365 ** Information about currently open connections to mailers, or to 366 ** hosts that we have looked up recently. 367 */ 368 369 # define MCI struct mailer_con_info 370 371 MCI 372 { 373 short mci_flags; /* flag bits, see below */ 374 short mci_errno; /* error number on last connection */ 375 short mci_exitstat; /* exit status from last connection */ 376 short mci_state; /* SMTP state */ 377 FILE *mci_in; /* input side of connection */ 378 FILE *mci_out; /* output side of connection */ 379 int mci_pid; /* process id of subordinate proc */ 380 char *mci_phase; /* SMTP phase string */ 381 struct mailer *mci_mailer; /* ptr to the mailer for this conn */ 382 char *mci_host; /* host name */ 383 time_t mci_lastuse; /* last usage time */ 384 }; 385 386 387 /* flag bits */ 388 #define MCIF_VALID 00001 /* this entry is valid */ 389 #define MCIF_TEMP 00002 /* don't cache this connection */ 390 #define MCIF_CACHED 00004 /* currently in open cache */ 391 392 /* states */ 393 #define MCIS_CLOSED 0 /* no traffic on this connection */ 394 #define MCIS_OPENING 1 /* sending initial protocol */ 395 #define MCIS_OPEN 2 /* open, initial protocol sent */ 396 #define MCIS_ACTIVE 3 /* message being sent */ 397 #define MCIS_QUITING 4 /* running quit protocol */ 398 #define MCIS_SSD 5 /* service shutting down */ 399 #define MCIS_ERROR 6 /* I/O error on connection */ 400 /* 401 ** Mapping functions 402 ** 403 ** These allow arbitrary mappings in the config file. The idea 404 ** (albeit not the implementation) comes from IDA sendmail. 405 */ 406 407 408 /* 409 ** The class of a map -- essentially the functions to call 410 */ 411 412 # define MAPCLASS struct _mapclass 413 414 MAPCLASS 415 { 416 bool (*map_init)(); /* initialization function */ 417 char *(*map_lookup)(); /* lookup function */ 418 }; 419 420 421 /* 422 ** An actual map. 423 */ 424 425 # define MAP struct _map 426 427 MAP 428 { 429 MAPCLASS *map_class; /* the class of this map */ 430 int map_flags; /* flags, see below */ 431 char *map_file; /* the (nominal) filename */ 432 void *map_db; /* the open database ptr */ 433 char *map_app; /* to append to successful matches */ 434 char *map_domain; /* the (nominal) NIS domain */ 435 }; 436 437 /* bit values for map_flags */ 438 # define MF_VALID 00001 /* this entry is valid */ 439 # define MF_INCLNULL 00002 /* include null byte in key */ 440 # define MF_OPTIONAL 00004 /* don't complain if map not found */ 441 # define MF_NOFOLDCASE 00010 /* don't fold case in keys */ 442 # define MF_MATCHONLY 00020 /* don't use the map value */ 443 /* 444 ** Symbol table definitions 445 */ 446 447 struct symtab 448 { 449 char *s_name; /* name to be entered */ 450 char s_type; /* general type (see below) */ 451 struct symtab *s_next; /* pointer to next in chain */ 452 union 453 { 454 BITMAP sv_class; /* bit-map of word classes */ 455 ADDRESS *sv_addr; /* pointer to address header */ 456 MAILER *sv_mailer; /* pointer to mailer */ 457 char *sv_alias; /* alias */ 458 MAPCLASS sv_mapclass; /* mapping function class */ 459 MAP sv_map; /* mapping function */ 460 char *sv_hostsig; /* host signature */ 461 MCI sv_mci; /* mailer connection info */ 462 } s_value; 463 }; 464 465 typedef struct symtab STAB; 466 467 /* symbol types */ 468 # define ST_UNDEF 0 /* undefined type */ 469 # define ST_CLASS 1 /* class map */ 470 # define ST_ADDRESS 2 /* an address in parsed format */ 471 # define ST_MAILER 3 /* a mailer header */ 472 # define ST_ALIAS 4 /* an alias */ 473 # define ST_MAPCLASS 5 /* mapping function class */ 474 # define ST_MAP 6 /* mapping function */ 475 # define ST_HOSTSIG 7 /* host signature */ 476 # define ST_MCI 16 /* mailer connection info (offset) */ 477 478 # define s_class s_value.sv_class 479 # define s_address s_value.sv_addr 480 # define s_mailer s_value.sv_mailer 481 # define s_alias s_value.sv_alias 482 # define s_mci s_value.sv_mci 483 # define s_mapclass s_value.sv_mapclass 484 # define s_hostsig s_value.sv_hostsig 485 # define s_map s_value.sv_map 486 487 extern STAB *stab(); 488 489 /* opcodes to stab */ 490 # define ST_FIND 0 /* find entry */ 491 # define ST_ENTER 1 /* enter if not there */ 492 /* 493 ** STRUCT EVENT -- event queue. 494 ** 495 ** Maintained in sorted order. 496 ** 497 ** We store the pid of the process that set this event to insure 498 ** that when we fork we will not take events intended for the parent. 499 */ 500 501 struct event 502 { 503 time_t ev_time; /* time of the function call */ 504 int (*ev_func)(); /* function to call */ 505 int ev_arg; /* argument to ev_func */ 506 int ev_pid; /* pid that set this event */ 507 struct event *ev_link; /* link to next item */ 508 }; 509 510 typedef struct event EVENT; 511 512 EXTERN EVENT *EventQueue; /* head of event queue */ 513 /* 514 ** Operation, send, and error modes 515 ** 516 ** The operation mode describes the basic operation of sendmail. 517 ** This can be set from the command line, and is "send mail" by 518 ** default. 519 ** 520 ** The send mode tells how to send mail. It can be set in the 521 ** configuration file. It's setting determines how quickly the 522 ** mail will be delivered versus the load on your system. If the 523 ** -v (verbose) flag is given, it will be forced to SM_DELIVER 524 ** mode. 525 ** 526 ** The error mode tells how to return errors. 527 */ 528 529 EXTERN char OpMode; /* operation mode, see below */ 530 531 #define MD_DELIVER 'm' /* be a mail sender */ 532 #define MD_SMTP 's' /* run SMTP on standard input */ 533 #define MD_DAEMON 'd' /* run as a daemon */ 534 #define MD_VERIFY 'v' /* verify: don't collect or deliver */ 535 #define MD_TEST 't' /* test mode: resolve addrs only */ 536 #define MD_INITALIAS 'i' /* initialize alias database */ 537 #define MD_PRINT 'p' /* print the queue */ 538 #define MD_FREEZE 'z' /* freeze the configuration file */ 539 540 541 EXTERN char SendMode; /* send mode, see below */ 542 543 #define SM_DELIVER 'i' /* interactive delivery */ 544 #define SM_QUICKD 'j' /* deliver w/o queueing */ 545 #define SM_FORK 'b' /* deliver in background */ 546 #define SM_QUEUE 'q' /* queue, don't deliver */ 547 #define SM_VERIFY 'v' /* verify only (used internally) */ 548 549 /* used only as a parameter to sendall */ 550 #define SM_DEFAULT '\0' /* unspecified, use SendMode */ 551 552 553 EXTERN char ErrorMode; /* error mode, see below */ 554 555 #define EM_PRINT 'p' /* print errors */ 556 #define EM_MAIL 'm' /* mail back errors */ 557 #define EM_WRITE 'w' /* write back errors */ 558 #define EM_BERKNET 'e' /* special berknet processing */ 559 #define EM_QUIET 'q' /* don't print messages (stat only) */ 560 561 /* Offset used to ensure that name server error * codes are unique */ 562 #define MAX_ERRNO 100 563 564 /* privacy flags */ 565 #define PRIV_PUBLIC 0 /* what have I got to hide? */ 566 #define PRIV_NEEDMAILHELO 00001 /* insist on HELO for MAIL, at least */ 567 #define PRIV_NEEDEXPNHELO 00002 /* insist on HELO for EXPN */ 568 #define PRIV_NEEDVRFYHELO 00004 /* insist on HELO for VRFY */ 569 #define PRIV_NOEXPN 00010 /* disallow EXPN command entirely */ 570 #define PRIV_NOVRFY 00020 /* disallow VRFY command entirely */ 571 #define PRIV_RESTRMAILQ 01000 /* restrict mailq command */ 572 #define PRIV_GOAWAY 00777 /* don't give no info, anyway, anyhow */ 573 574 /* struct defining such things */ 575 struct prival 576 { 577 char *pv_name; /* name of privacy flag */ 578 int pv_flag; /* numeric level */ 579 }; 580 /* 581 ** Global variables. 582 */ 583 584 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 585 EXTERN bool NoAlias; /* if set, don't do any aliasing */ 586 EXTERN bool ForceMail; /* if set, mail even if already got a copy */ 587 EXTERN bool MeToo; /* send to the sender also */ 588 EXTERN bool IgnrDot; /* don't let dot end messages */ 589 EXTERN bool SaveFrom; /* save leading "From" lines */ 590 EXTERN bool Verbose; /* set if blow-by-blow desired */ 591 EXTERN bool GrabTo; /* if set, get recipients from msg */ 592 EXTERN bool NoReturn; /* don't return letter to sender */ 593 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 594 EXTERN bool QueueRun; /* currently running message from the queue */ 595 EXTERN bool HoldErrs; /* only output errors to transcript */ 596 EXTERN bool NoConnect; /* don't connect to non-local mailers */ 597 EXTERN bool SuperSafe; /* be extra careful, even if expensive */ 598 EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ 599 EXTERN bool AutoRebuild; /* auto-rebuild the alias database as needed */ 600 EXTERN bool CheckAliases; /* parse addresses during newaliases */ 601 EXTERN bool UseNameServer; /* use internet domain name server */ 602 EXTERN bool EightBit; /* try to preserve 8-bit data */ 603 EXTERN int SafeAlias; /* minutes to wait until @:@ in alias file */ 604 EXTERN time_t TimeOut; /* time until timeout */ 605 EXTERN FILE *InChannel; /* input connection */ 606 EXTERN FILE *OutChannel; /* output connection */ 607 EXTERN uid_t RealUid; /* when Daemon, real uid of caller */ 608 EXTERN gid_t RealGid; /* when Daemon, real gid of caller */ 609 EXTERN uid_t DefUid; /* default uid to run as */ 610 EXTERN gid_t DefGid; /* default gid to run as */ 611 EXTERN char *DefUser; /* default user to run as (from DefUid) */ 612 EXTERN int OldUmask; /* umask when sendmail starts up */ 613 EXTERN int Errors; /* set if errors (local to single pass) */ 614 EXTERN int ExitStat; /* exit status code */ 615 EXTERN int AliasLevel; /* depth of aliasing */ 616 EXTERN int LineNumber; /* line number in current input */ 617 EXTERN int LogLevel; /* level of logging to perform */ 618 EXTERN int FileMode; /* mode on files */ 619 EXTERN int QueueLA; /* load average starting forced queueing */ 620 EXTERN int RefuseLA; /* load average refusing connections are */ 621 EXTERN int CurrentLA; /* current load average */ 622 EXTERN long QueueFactor; /* slope of queue function */ 623 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 624 EXTERN char *AliasFile; /* location of alias file */ 625 EXTERN char *HelpFile; /* location of SMTP help file */ 626 EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ 627 EXTERN char *StatFile; /* location of statistics summary */ 628 EXTERN char *QueueDir; /* location of queue directory */ 629 EXTERN char *FileName; /* name to print on error messages */ 630 EXTERN char *SmtpPhase; /* current phase in SMTP processing */ 631 EXTERN char *MyHostName; /* name of this host for SMTP messages */ 632 EXTERN char *RealHostName; /* name of host we are talking to */ 633 EXTERN struct sockaddr_in RealHostAddr;/* address of host we are talking to */ 634 EXTERN char *CurHostName; /* current host we are dealing with */ 635 EXTERN jmp_buf TopFrame; /* branch-to-top-of-loop-on-error frame */ 636 EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ 637 EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ 638 EXTERN int PrivacyFlags; /* privacy flags */ 639 extern char *ConfFile; /* location of configuration file [conf.c] */ 640 extern char *FreezeFile; /* location of frozen memory image [conf.c] */ 641 extern char *PidFile; /* location of proc id file [conf.c] */ 642 extern ADDRESS NullAddress; /* a null (template) address [main.c] */ 643 EXTERN char SpaceSub; /* substitution for <lwsp> */ 644 EXTERN long WkClassFact; /* multiplier for message class -> priority */ 645 EXTERN long WkRecipFact; /* multiplier for # of recipients -> priority */ 646 EXTERN long WkTimeFact; /* priority offset each time this job is run */ 647 EXTERN char *PostMasterCopy; /* address to get errs cc's */ 648 EXTERN int CheckpointInterval; /* queue file checkpoint interval */ 649 EXTERN char *UdbSpec; /* user database source spec [udbexpand.c] */ 650 EXTERN int MaxHopCount; /* number of hops until we give an error */ 651 EXTERN int ConfigLevel; /* config file level -- what does .cf expect? */ 652 EXTERN char *TimeZoneSpec; /* override time zone specification */ 653 EXTERN bool MatchGecos; /* look for user names in gecos field */ 654 EXTERN bool DontPruneRoutes; /* don't prune source routes */ 655 EXTERN int MaxMciCache; /* maximum entries in MCI cache */ 656 EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ 657 EXTERN char *ForwardPath; /* path to search for .forward files */ 658 EXTERN long MinBlocksFree; /* minimum number of blocks free on queue fs */ 659 660 661 /* 662 ** Timeouts 663 ** 664 ** Indicated values are the MINIMUM per RFC 1123 section 5.3.2. 665 */ 666 667 EXTERN struct 668 { 669 time_t to_initial; /* initial greeting timeout [5m] */ 670 time_t to_mail; /* MAIL command [5m] */ 671 time_t to_rcpt; /* RCPT command [5m] */ 672 time_t to_datainit; /* DATA initiation [2m] */ 673 time_t to_datablock; /* DATA block [3m] */ 674 time_t to_datafinal; /* DATA completion [10m] */ 675 time_t to_nextcommand; /* next command [5m] */ 676 /* following timeouts are not mentioned in RFC 1123 */ 677 time_t to_rset; /* RSET command */ 678 time_t to_helo; /* HELO command */ 679 time_t to_quit; /* QUIT command */ 680 time_t to_miscshort; /* misc short commands (NOOP, VERB, etc) */ 681 } TimeOuts; 682 683 684 /* 685 ** Trace information 686 */ 687 688 /* trace vector and macros for debugging flags */ 689 EXTERN u_char tTdvect[100]; 690 # define tTd(flag, level) (tTdvect[flag] >= level) 691 # define tTdlevel(flag) (tTdvect[flag]) 692 /* 693 ** Miscellaneous information. 694 */ 695 696 697 698 /* 699 ** Some in-line functions 700 */ 701 702 /* set exit status */ 703 #define setstat(s) { \ 704 if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ 705 ExitStat = s; \ 706 } 707 708 /* make a copy of a string */ 709 #define newstr(s) strcpy(xalloc(strlen(s) + 1), s) 710 711 #define STRUCTCOPY(s, d) d = s 712 713 714 /* 715 ** Declarations of useful functions 716 */ 717 718 extern ADDRESS *parseaddr(); 719 extern char *xalloc(); 720 extern bool sameaddr(); 721 extern FILE *dfopen(); 722 extern EVENT *setevent(); 723 extern char *sfgets(); 724 extern char *queuename(); 725 extern time_t curtime(); 726