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 6.41 (Berkeley) 03/31/93 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 6.41 03/31/93"; 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 # include <sys/types.h> 35 36 # include "conf.h" 37 # include "useful.h" 38 39 # ifdef LOG 40 # include <syslog.h> 41 # endif /* LOG */ 42 43 # ifdef DAEMON 44 # include <sys/socket.h> 45 # endif 46 # ifdef NETINET 47 # include <netinet/in.h> 48 # endif 49 # ifdef NETISO 50 # include <netiso/iso.h> 51 # endif 52 # ifdef NETNS 53 # include <netns/ns.h> 54 # endif 55 # ifdef NETX25 56 # include <netccitt/x25.h> 57 # endif 58 59 60 61 62 /* 63 ** Data structure for bit maps. 64 ** 65 ** Each bit in this map can be referenced by an ascii character. 66 ** This is 128 possible bits, or 12 8-bit bytes. 67 */ 68 69 #define BITMAPBYTES 16 /* number of bytes in a bit map */ 70 #define BYTEBITS 8 /* number of bits in a byte */ 71 72 /* internal macros */ 73 #define _BITWORD(bit) (bit / (BYTEBITS * sizeof (int))) 74 #define _BITBIT(bit) (1 << (bit % (BYTEBITS * sizeof (int)))) 75 76 typedef int BITMAP[BITMAPBYTES / sizeof (int)]; 77 78 /* test bit number N */ 79 #define bitnset(bit, map) ((map)[_BITWORD(bit)] & _BITBIT(bit)) 80 81 /* set bit number N */ 82 #define setbitn(bit, map) (map)[_BITWORD(bit)] |= _BITBIT(bit) 83 84 /* clear bit number N */ 85 #define clrbitn(bit, map) (map)[_BITWORD(bit)] &= ~_BITBIT(bit) 86 87 /* clear an entire bit map */ 88 #define clrbitmap(map) bzero((char *) map, BITMAPBYTES) 89 /* 90 ** Address structure. 91 ** Addresses are stored internally in this structure. 92 */ 93 94 struct address 95 { 96 char *q_paddr; /* the printname for the address */ 97 char *q_user; /* user name */ 98 char *q_ruser; /* real user name, or NULL if q_user */ 99 char *q_host; /* host name */ 100 struct mailer *q_mailer; /* mailer to use */ 101 u_short q_flags; /* status flags, see below */ 102 uid_t q_uid; /* user-id of receiver (if known) */ 103 gid_t q_gid; /* group-id of receiver (if known) */ 104 char *q_home; /* home dir (local mailer only) */ 105 char *q_fullname; /* full name if known */ 106 struct address *q_next; /* chain */ 107 struct address *q_alias; /* address this results from */ 108 char *q_owner; /* owner of q_alias */ 109 struct address *q_tchain; /* temporary use chain */ 110 time_t q_timeout; /* timeout for this address */ 111 }; 112 113 typedef struct address ADDRESS; 114 115 # define QDONTSEND 000001 /* don't send to this address */ 116 # define QBADADDR 000002 /* this address is verified bad */ 117 # define QGOODUID 000004 /* the q_uid q_gid fields are good */ 118 # define QPRIMARY 000010 /* set from argv */ 119 # define QQUEUEUP 000020 /* queue for later transmission */ 120 # define QSENT 000040 /* has been successfully delivered */ 121 # define QNOTREMOTE 000100 /* not an address for remote forwarding */ 122 # define QSELFREF 000200 /* this address references itself */ 123 # define QVERIFIED 000400 /* verified, but not expanded */ 124 /* 125 ** Mailer definition structure. 126 ** Every mailer known to the system is declared in this 127 ** structure. It defines the pathname of the mailer, some 128 ** flags associated with it, and the argument vector to 129 ** pass to it. The flags are defined in conf.c 130 ** 131 ** The argument vector is expanded before actual use. All 132 ** words except the first are passed through the macro 133 ** processor. 134 */ 135 136 struct mailer 137 { 138 char *m_name; /* symbolic name of this mailer */ 139 char *m_mailer; /* pathname of the mailer to use */ 140 BITMAP m_flags; /* status flags, see below */ 141 short m_mno; /* mailer number internally */ 142 char **m_argv; /* template argument vector */ 143 short m_sh_rwset; /* rewrite set: sender header addresses */ 144 short m_se_rwset; /* rewrite set: sender envelope addresses */ 145 short m_rh_rwset; /* rewrite set: recipient header addresses */ 146 short m_re_rwset; /* rewrite set: recipient envelope addresses */ 147 char *m_eol; /* end of line string */ 148 long m_maxsize; /* size limit on message to this mailer */ 149 int m_linelimit; /* max # characters per line */ 150 }; 151 152 typedef struct mailer MAILER; 153 154 /* bits for m_flags */ 155 # define M_NOCOMMENT 'c' /* don't include comment part of address */ 156 # define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ 157 /* 'D' /* CF: include Date: */ 158 # define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ 159 # define M_ESCFROM 'E' /* escape From lines to >From */ 160 # define M_FOPT 'f' /* mailer takes picky -f flag */ 161 /* 'F' /* CF: include From: or Resent-From: */ 162 # define M_HST_UPPER 'h' /* preserve host case distinction */ 163 /* 'H' /* UIUC: MAIL11V3: preview headers */ 164 # define M_INTERNAL 'I' /* SMTP to another sendmail site */ 165 # define M_LOCALMAILER 'l' /* delivery is to this host */ 166 # define M_LIMITS 'L' /* must enforce SMTP line limits */ 167 # define M_MUSER 'm' /* can handle multiple users at once */ 168 /* 'M' /* CF: include Message-Id: */ 169 # define M_NHDR 'n' /* don't insert From line */ 170 /* 'N' /* UIUC: MAIL11V3: DATA returns multi-status */ 171 # define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ 172 /* 'P' /* CF: include Return-Path: */ 173 # define M_ROPT 'r' /* mailer takes picky -r flag */ 174 # define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */ 175 # define M_STRIPQ 's' /* strip quote chars from user/host */ 176 # define M_RESTR 'S' /* must be daemon to execute */ 177 # define M_USR_UPPER 'u' /* preserve user case distinction */ 178 # define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ 179 /* 'V' /* UIUC: !-relativize all addresses */ 180 # define M_XDOT 'X' /* use hidden-dot algorithm */ 181 # define M_7BITS '7' /* use 7-bit path */ 182 183 EXTERN MAILER *Mailer[MAXMAILERS+1]; 184 185 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 186 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 187 EXTERN MAILER *FileMailer; /* ptr to *file* mailer */ 188 EXTERN MAILER *InclMailer; /* ptr to *include* mailer */ 189 /* 190 ** Header structure. 191 ** This structure is used internally to store header items. 192 */ 193 194 struct header 195 { 196 char *h_field; /* the name of the field */ 197 char *h_value; /* the value of that field */ 198 struct header *h_link; /* the next header */ 199 u_short h_flags; /* status bits, see below */ 200 BITMAP h_mflags; /* m_flags bits needed */ 201 }; 202 203 typedef struct header HDR; 204 205 /* 206 ** Header information structure. 207 ** Defined in conf.c, this struct declares the header fields 208 ** that have some magic meaning. 209 */ 210 211 struct hdrinfo 212 { 213 char *hi_field; /* the name of the field */ 214 u_short hi_flags; /* status bits, see below */ 215 }; 216 217 extern struct hdrinfo HdrInfo[]; 218 219 /* bits for h_flags and hi_flags */ 220 # define H_EOH 00001 /* this field terminates header */ 221 # define H_RCPT 00002 /* contains recipient addresses */ 222 # define H_DEFAULT 00004 /* if another value is found, drop this */ 223 # define H_RESENT 00010 /* this address is a "Resent-..." address */ 224 # define H_CHECK 00020 /* check h_mflags against m_flags */ 225 # define H_ACHECK 00040 /* ditto, but always (not just default) */ 226 # define H_FORCE 00100 /* force this field, even if default */ 227 # define H_TRACE 00200 /* this field contains trace information */ 228 # define H_FROM 00400 /* this is a from-type field */ 229 # define H_VALID 01000 /* this field has a validated value */ 230 # define H_RECEIPTTO 02000 /* this field has return receipt info */ 231 # define H_ERRORSTO 04000 /* this field has error address info */ 232 /* 233 ** Envelope structure. 234 ** This structure defines the message itself. There is usually 235 ** only one of these -- for the message that we originally read 236 ** and which is our primary interest -- but other envelopes can 237 ** be generated during processing. For example, error messages 238 ** will have their own envelope. 239 */ 240 241 struct envelope 242 { 243 HDR *e_header; /* head of header list */ 244 long e_msgpriority; /* adjusted priority of this message */ 245 time_t e_ctime; /* time message appeared in the queue */ 246 char *e_to; /* the target person */ 247 char *e_receiptto; /* return receipt address */ 248 ADDRESS e_from; /* the person it is from */ 249 char *e_sender; /* e_from.q_paddr w comments stripped */ 250 char **e_fromdomain; /* the domain part of the sender */ 251 ADDRESS *e_sendqueue; /* list of message recipients */ 252 ADDRESS *e_errorqueue; /* the queue for error responses */ 253 long e_msgsize; /* size of the message in bytes */ 254 int e_nrcpts; /* number of recipients */ 255 short e_class; /* msg class (priority, junk, etc.) */ 256 short e_flags; /* flags, see below */ 257 short e_hopcount; /* number of times processed */ 258 short e_nsent; /* number of sends since checkpoint */ 259 short e_sendmode; /* message send mode */ 260 short e_errormode; /* error return mode */ 261 int (*e_puthdr)(); /* function to put header of message */ 262 int (*e_putbody)(); /* function to put body of message */ 263 struct envelope *e_parent; /* the message this one encloses */ 264 struct envelope *e_sibling; /* the next envelope of interest */ 265 char *e_df; /* location of temp file */ 266 FILE *e_dfp; /* temporary file */ 267 char *e_id; /* code for this entry in queue */ 268 FILE *e_xfp; /* transcript file */ 269 FILE *e_lockfp; /* the lock file for this message */ 270 char *e_message; /* error message */ 271 char *e_macro[128]; /* macro definitions */ 272 }; 273 274 typedef struct envelope ENVELOPE; 275 276 /* values for e_flags */ 277 #define EF_OLDSTYLE 000001 /* use spaces (not commas) in hdrs */ 278 #define EF_INQUEUE 000002 /* this message is fully queued */ 279 #define EF_TIMEOUT 000004 /* this message is too old */ 280 #define EF_CLRQUEUE 000010 /* disk copy is no longer needed */ 281 #define EF_SENDRECEIPT 000020 /* send a return receipt */ 282 #define EF_FATALERRS 000040 /* fatal errors occured */ 283 #define EF_KEEPQUEUE 000100 /* keep queue files always */ 284 #define EF_RESPONSE 000200 /* this is an error or return receipt */ 285 #define EF_RESENT 000400 /* this message is being forwarded */ 286 #define EF_VRFYONLY 001000 /* verify only (don't expand aliases) */ 287 #define EF_WARNING 002000 /* warning message has been sent */ 288 #define EF_QUEUERUN 004000 /* this envelope is from queue */ 289 290 EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ 291 /* 292 ** Message priority classes. 293 ** 294 ** The message class is read directly from the Priority: header 295 ** field in the message. 296 ** 297 ** CurEnv->e_msgpriority is the number of bytes in the message plus 298 ** the creation time (so that jobs ``tend'' to be ordered correctly), 299 ** adjusted by the message class, the number of recipients, and the 300 ** amount of time the message has been sitting around. This number 301 ** is used to order the queue. Higher values mean LOWER priority. 302 ** 303 ** Each priority class point is worth WkClassFact priority points; 304 ** each recipient is worth WkRecipFact priority points. Each time 305 ** we reprocess a message the priority is adjusted by WkTimeFact. 306 ** WkTimeFact should normally decrease the priority so that jobs 307 ** that have historically failed will be run later; thanks go to 308 ** Jay Lepreau at Utah for pointing out the error in my thinking. 309 ** 310 ** The "class" is this number, unadjusted by the age or size of 311 ** this message. Classes with negative representations will have 312 ** error messages thrown away if they are not local. 313 */ 314 315 struct priority 316 { 317 char *pri_name; /* external name of priority */ 318 int pri_val; /* internal value for same */ 319 }; 320 321 EXTERN struct priority Priorities[MAXPRIORITIES]; 322 EXTERN int NumPriorities; /* pointer into Priorities */ 323 /* 324 ** Rewrite rules. 325 */ 326 327 struct rewrite 328 { 329 char **r_lhs; /* pattern match */ 330 char **r_rhs; /* substitution value */ 331 struct rewrite *r_next;/* next in chain */ 332 }; 333 334 EXTERN struct rewrite *RewriteRules[MAXRWSETS]; 335 336 /* 337 ** Special characters in rewriting rules. 338 ** These are used internally only. 339 ** The COND* rules are actually used in macros rather than in 340 ** rewriting rules, but are given here because they 341 ** cannot conflict. 342 */ 343 344 /* left hand side items */ 345 # define MATCHZANY 0220 /* match zero or more tokens */ 346 # define MATCHANY 0221 /* match one or more tokens */ 347 # define MATCHONE 0222 /* match exactly one token */ 348 # define MATCHCLASS 0223 /* match one token in a class */ 349 # define MATCHNCLASS 0224 /* match anything not in class */ 350 # define MATCHREPL 0225 /* replacement on RHS for above */ 351 352 /* right hand side items */ 353 # define CANONNET 0226 /* canonical net, next token */ 354 # define CANONHOST 0227 /* canonical host, next token */ 355 # define CANONUSER 0230 /* canonical user, next N tokens */ 356 # define CALLSUBR 0231 /* call another rewriting set */ 357 358 /* conditionals in macros */ 359 # define CONDIF 0232 /* conditional if-then */ 360 # define CONDELSE 0233 /* conditional else */ 361 # define CONDFI 0234 /* conditional fi */ 362 363 /* bracket characters for host name lookup */ 364 # define HOSTBEGIN 0235 /* hostname lookup begin */ 365 # define HOSTEND 0236 /* hostname lookup end */ 366 367 /* bracket characters for generalized lookup */ 368 # define LOOKUPBEGIN 0205 /* generalized lookup begin */ 369 # define LOOKUPEND 0206 /* generalized lookup end */ 370 371 /* macro substitution character */ 372 # define MACROEXPAND 0201 /* macro expansion */ 373 374 /* to make the code clearer */ 375 # define MATCHZERO CANONHOST 376 377 /* external <==> internal mapping table */ 378 struct metamac 379 { 380 char metaname; /* external code (after $) */ 381 char metaval; /* internal code (as above) */ 382 }; 383 /* 384 ** Information about currently open connections to mailers, or to 385 ** hosts that we have looked up recently. 386 */ 387 388 # define MCI struct mailer_con_info 389 390 MCI 391 { 392 short mci_flags; /* flag bits, see below */ 393 short mci_errno; /* error number on last connection */ 394 short mci_exitstat; /* exit status from last connection */ 395 short mci_state; /* SMTP state */ 396 FILE *mci_in; /* input side of connection */ 397 FILE *mci_out; /* output side of connection */ 398 int mci_pid; /* process id of subordinate proc */ 399 char *mci_phase; /* SMTP phase string */ 400 struct mailer *mci_mailer; /* ptr to the mailer for this conn */ 401 char *mci_host; /* host name */ 402 time_t mci_lastuse; /* last usage time */ 403 }; 404 405 406 /* flag bits */ 407 #define MCIF_VALID 00001 /* this entry is valid */ 408 #define MCIF_TEMP 00002 /* don't cache this connection */ 409 #define MCIF_CACHED 00004 /* currently in open cache */ 410 411 /* states */ 412 #define MCIS_CLOSED 0 /* no traffic on this connection */ 413 #define MCIS_OPENING 1 /* sending initial protocol */ 414 #define MCIS_OPEN 2 /* open, initial protocol sent */ 415 #define MCIS_ACTIVE 3 /* message being sent */ 416 #define MCIS_QUITING 4 /* running quit protocol */ 417 #define MCIS_SSD 5 /* service shutting down */ 418 #define MCIS_ERROR 6 /* I/O error on connection */ 419 /* 420 ** Mapping functions 421 ** 422 ** These allow arbitrary mappings in the config file. The idea 423 ** (albeit not the implementation) comes from IDA sendmail. 424 */ 425 426 427 /* 428 ** The class of a map -- essentially the functions to call 429 */ 430 431 # define MAPCLASS struct _mapclass 432 433 MAPCLASS 434 { 435 bool (*map_init)(); /* initialization function */ 436 char *(*map_lookup)(); /* lookup function */ 437 }; 438 439 440 /* 441 ** An actual map. 442 */ 443 444 # define MAP struct _map 445 446 MAP 447 { 448 MAPCLASS *map_class; /* the class of this map */ 449 int map_flags; /* flags, see below */ 450 char *map_file; /* the (nominal) filename */ 451 void *map_db; /* the open database ptr */ 452 char *map_app; /* to append to successful matches */ 453 char *map_domain; /* the (nominal) NIS domain */ 454 }; 455 456 /* bit values for map_flags */ 457 # define MF_VALID 00001 /* this entry is valid */ 458 # define MF_INCLNULL 00002 /* include null byte in key */ 459 # define MF_OPTIONAL 00004 /* don't complain if map not found */ 460 # define MF_NOFOLDCASE 00010 /* don't fold case in keys */ 461 # define MF_MATCHONLY 00020 /* don't use the map value */ 462 /* 463 ** Symbol table definitions 464 */ 465 466 struct symtab 467 { 468 char *s_name; /* name to be entered */ 469 char s_type; /* general type (see below) */ 470 struct symtab *s_next; /* pointer to next in chain */ 471 union 472 { 473 BITMAP sv_class; /* bit-map of word classes */ 474 ADDRESS *sv_addr; /* pointer to address header */ 475 MAILER *sv_mailer; /* pointer to mailer */ 476 char *sv_alias; /* alias */ 477 MAPCLASS sv_mapclass; /* mapping function class */ 478 MAP sv_map; /* mapping function */ 479 char *sv_hostsig; /* host signature */ 480 MCI sv_mci; /* mailer connection info */ 481 } s_value; 482 }; 483 484 typedef struct symtab STAB; 485 486 /* symbol types */ 487 # define ST_UNDEF 0 /* undefined type */ 488 # define ST_CLASS 1 /* class map */ 489 # define ST_ADDRESS 2 /* an address in parsed format */ 490 # define ST_MAILER 3 /* a mailer header */ 491 # define ST_ALIAS 4 /* an alias */ 492 # define ST_MAPCLASS 5 /* mapping function class */ 493 # define ST_MAP 6 /* mapping function */ 494 # define ST_HOSTSIG 7 /* host signature */ 495 # define ST_MCI 16 /* mailer connection info (offset) */ 496 497 # define s_class s_value.sv_class 498 # define s_address s_value.sv_addr 499 # define s_mailer s_value.sv_mailer 500 # define s_alias s_value.sv_alias 501 # define s_mci s_value.sv_mci 502 # define s_mapclass s_value.sv_mapclass 503 # define s_hostsig s_value.sv_hostsig 504 # define s_map s_value.sv_map 505 506 extern STAB *stab(); 507 508 /* opcodes to stab */ 509 # define ST_FIND 0 /* find entry */ 510 # define ST_ENTER 1 /* enter if not there */ 511 /* 512 ** STRUCT EVENT -- event queue. 513 ** 514 ** Maintained in sorted order. 515 ** 516 ** We store the pid of the process that set this event to insure 517 ** that when we fork we will not take events intended for the parent. 518 */ 519 520 struct event 521 { 522 time_t ev_time; /* time of the function call */ 523 int (*ev_func)(); /* function to call */ 524 int ev_arg; /* argument to ev_func */ 525 int ev_pid; /* pid that set this event */ 526 struct event *ev_link; /* link to next item */ 527 }; 528 529 typedef struct event EVENT; 530 531 EXTERN EVENT *EventQueue; /* head of event queue */ 532 /* 533 ** Operation, send, and error modes 534 ** 535 ** The operation mode describes the basic operation of sendmail. 536 ** This can be set from the command line, and is "send mail" by 537 ** default. 538 ** 539 ** The send mode tells how to send mail. It can be set in the 540 ** configuration file. It's setting determines how quickly the 541 ** mail will be delivered versus the load on your system. If the 542 ** -v (verbose) flag is given, it will be forced to SM_DELIVER 543 ** mode. 544 ** 545 ** The error mode tells how to return errors. 546 */ 547 548 EXTERN char OpMode; /* operation mode, see below */ 549 550 #define MD_DELIVER 'm' /* be a mail sender */ 551 #define MD_SMTP 's' /* run SMTP on standard input */ 552 #define MD_DAEMON 'd' /* run as a daemon */ 553 #define MD_VERIFY 'v' /* verify: don't collect or deliver */ 554 #define MD_TEST 't' /* test mode: resolve addrs only */ 555 #define MD_INITALIAS 'i' /* initialize alias database */ 556 #define MD_PRINT 'p' /* print the queue */ 557 #define MD_FREEZE 'z' /* freeze the configuration file */ 558 559 560 /* values for e_sendmode -- send modes */ 561 #define SM_DELIVER 'i' /* interactive delivery */ 562 #define SM_QUICKD 'j' /* deliver w/o queueing */ 563 #define SM_FORK 'b' /* deliver in background */ 564 #define SM_QUEUE 'q' /* queue, don't deliver */ 565 #define SM_VERIFY 'v' /* verify only (used internally) */ 566 567 /* used only as a parameter to sendall */ 568 #define SM_DEFAULT '\0' /* unspecified, use SendMode */ 569 570 571 /* values for e_errormode -- error handling modes */ 572 #define EM_PRINT 'p' /* print errors */ 573 #define EM_MAIL 'm' /* mail back errors */ 574 #define EM_WRITE 'w' /* write back errors */ 575 #define EM_BERKNET 'e' /* special berknet processing */ 576 #define EM_QUIET 'q' /* don't print messages (stat only) */ 577 578 /* Offset used to ensure that name server error * codes are unique */ 579 #define MAX_ERRNO 100 580 581 /* privacy flags */ 582 #define PRIV_PUBLIC 0 /* what have I got to hide? */ 583 #define PRIV_NEEDMAILHELO 00001 /* insist on HELO for MAIL, at least */ 584 #define PRIV_NEEDEXPNHELO 00002 /* insist on HELO for EXPN */ 585 #define PRIV_NEEDVRFYHELO 00004 /* insist on HELO for VRFY */ 586 #define PRIV_NOEXPN 00010 /* disallow EXPN command entirely */ 587 #define PRIV_NOVRFY 00020 /* disallow VRFY command entirely */ 588 #define PRIV_AUTHWARNINGS 00040 /* flag possible authorization probs */ 589 #define PRIV_RESTRMAILQ 01000 /* restrict mailq command */ 590 #define PRIV_GOAWAY 00777 /* don't give no info, anyway, anyhow */ 591 592 /* struct defining such things */ 593 struct prival 594 { 595 char *pv_name; /* name of privacy flag */ 596 int pv_flag; /* numeric level */ 597 }; 598 599 /* 600 ** Regular UNIX sockaddrs are too small to handle ISO addresses, so 601 ** we are forced to declare a supertype here. 602 */ 603 604 union bigsockaddr 605 { 606 struct sockaddr sa; /* general version */ 607 #ifdef NETINET 608 struct sockaddr_in sin; /* INET family */ 609 #endif 610 #ifdef NETISO 611 struct sockaddr_iso siso; /* ISO family */ 612 #endif 613 #ifdef NETNS 614 struct sockaddr_ns sns; /* XNS family */ 615 #endif 616 #ifdef NETX25 617 struct sockaddr_x25 sx25; /* X.25 family */ 618 #endif 619 }; 620 621 #define SOCKADDR union bigsockaddr 622 623 /* 624 ** Global variables. 625 */ 626 627 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 628 EXTERN bool NoAlias; /* if set, don't do any aliasing */ 629 EXTERN bool MeToo; /* send to the sender also */ 630 EXTERN bool IgnrDot; /* don't let dot end messages */ 631 EXTERN bool SaveFrom; /* save leading "From" lines */ 632 EXTERN bool Verbose; /* set if blow-by-blow desired */ 633 EXTERN bool GrabTo; /* if set, get recipients from msg */ 634 EXTERN bool NoReturn; /* don't return letter to sender */ 635 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 636 EXTERN bool HoldErrs; /* only output errors to transcript */ 637 EXTERN bool NoConnect; /* don't connect to non-local mailers */ 638 EXTERN bool SuperSafe; /* be extra careful, even if expensive */ 639 EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ 640 EXTERN bool AutoRebuild; /* auto-rebuild the alias database as needed */ 641 EXTERN bool CheckAliases; /* parse addresses during newaliases */ 642 EXTERN bool UseNameServer; /* use internet domain name server */ 643 EXTERN bool EightBit; /* try to preserve 8-bit data */ 644 EXTERN int SafeAlias; /* minutes to wait until @:@ in alias file */ 645 EXTERN FILE *InChannel; /* input connection */ 646 EXTERN FILE *OutChannel; /* output connection */ 647 EXTERN uid_t RealUid; /* when Daemon, real uid of caller */ 648 EXTERN gid_t RealGid; /* when Daemon, real gid of caller */ 649 EXTERN uid_t DefUid; /* default uid to run as */ 650 EXTERN gid_t DefGid; /* default gid to run as */ 651 EXTERN char *DefUser; /* default user to run as (from DefUid) */ 652 EXTERN int OldUmask; /* umask when sendmail starts up */ 653 EXTERN int Errors; /* set if errors (local to single pass) */ 654 EXTERN int ExitStat; /* exit status code */ 655 EXTERN int AliasLevel; /* depth of aliasing */ 656 EXTERN int LineNumber; /* line number in current input */ 657 EXTERN int LogLevel; /* level of logging to perform */ 658 EXTERN int FileMode; /* mode on files */ 659 EXTERN int QueueLA; /* load average starting forced queueing */ 660 EXTERN int RefuseLA; /* load average refusing connections are */ 661 EXTERN int CurrentLA; /* current load average */ 662 EXTERN long QueueFactor; /* slope of queue function */ 663 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 664 EXTERN char *AliasFile; /* location of alias file */ 665 EXTERN char *HelpFile; /* location of SMTP help file */ 666 EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ 667 EXTERN char *StatFile; /* location of statistics summary */ 668 EXTERN char *QueueDir; /* location of queue directory */ 669 EXTERN char *FileName; /* name to print on error messages */ 670 EXTERN char *SmtpPhase; /* current phase in SMTP processing */ 671 EXTERN char *MyHostName; /* name of this host for SMTP messages */ 672 EXTERN char *RealHostName; /* name of host we are talking to */ 673 EXTERN SOCKADDR RealHostAddr; /* address of host we are talking to */ 674 EXTERN char *CurHostName; /* current host we are dealing with */ 675 EXTERN jmp_buf TopFrame; /* branch-to-top-of-loop-on-error frame */ 676 EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ 677 EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ 678 EXTERN int PrivacyFlags; /* privacy flags */ 679 extern char *ConfFile; /* location of configuration file [conf.c] */ 680 extern char *FreezeFile; /* location of frozen memory image [conf.c] */ 681 extern char *PidFile; /* location of proc id file [conf.c] */ 682 extern ADDRESS NullAddress; /* a null (template) address [main.c] */ 683 EXTERN char SpaceSub; /* substitution for <lwsp> */ 684 EXTERN long WkClassFact; /* multiplier for message class -> priority */ 685 EXTERN long WkRecipFact; /* multiplier for # of recipients -> priority */ 686 EXTERN long WkTimeFact; /* priority offset each time this job is run */ 687 EXTERN char *PostMasterCopy; /* address to get errs cc's */ 688 EXTERN int CheckpointInterval; /* queue file checkpoint interval */ 689 EXTERN char *UdbSpec; /* user database source spec [udbexpand.c] */ 690 EXTERN int MaxHopCount; /* number of hops until we give an error */ 691 EXTERN int ConfigLevel; /* config file level -- what does .cf expect? */ 692 EXTERN char *TimeZoneSpec; /* override time zone specification */ 693 EXTERN bool MatchGecos; /* look for user names in gecos field */ 694 EXTERN bool DontPruneRoutes; /* don't prune source routes */ 695 EXTERN int MaxMciCache; /* maximum entries in MCI cache */ 696 EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ 697 EXTERN char *ForwardPath; /* path to search for .forward files */ 698 EXTERN long MinBlocksFree; /* minimum number of blocks free on queue fs */ 699 EXTERN char *QueueLimitRecipient; /* limit queue runs to this recipient */ 700 EXTERN char *QueueLimitSender; /* limit queue runs to this sender */ 701 EXTERN char *QueueLimitId; /* limit queue runs to this id */ 702 EXTERN char *FallBackMX; /* fall back MX host */ 703 704 705 /* 706 ** Timeouts 707 ** 708 ** Indicated values are the MINIMUM per RFC 1123 section 5.3.2. 709 */ 710 711 EXTERN struct 712 { 713 time_t to_initial; /* initial greeting timeout [5m] */ 714 time_t to_mail; /* MAIL command [5m] */ 715 time_t to_rcpt; /* RCPT command [5m] */ 716 time_t to_datainit; /* DATA initiation [2m] */ 717 time_t to_datablock; /* DATA block [3m] */ 718 time_t to_datafinal; /* DATA completion [10m] */ 719 time_t to_nextcommand; /* next command [5m] */ 720 /* following timeouts are not mentioned in RFC 1123 */ 721 time_t to_rset; /* RSET command */ 722 time_t to_helo; /* HELO command */ 723 time_t to_quit; /* QUIT command */ 724 time_t to_miscshort; /* misc short commands (NOOP, VERB, etc) */ 725 /* following are per message */ 726 time_t to_q_return; /* queue return timeout */ 727 time_t to_q_warning; /* queue warning timeout */ 728 } TimeOuts; 729 730 731 /* 732 ** Trace information 733 */ 734 735 /* trace vector and macros for debugging flags */ 736 EXTERN u_char tTdvect[100]; 737 # define tTd(flag, level) (tTdvect[flag] >= level) 738 # define tTdlevel(flag) (tTdvect[flag]) 739 /* 740 ** Miscellaneous information. 741 */ 742 743 744 745 /* 746 ** Some in-line functions 747 */ 748 749 /* set exit status */ 750 #define setstat(s) { \ 751 if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ 752 ExitStat = s; \ 753 } 754 755 /* make a copy of a string */ 756 #define newstr(s) strcpy(xalloc(strlen(s) + 1), s) 757 758 #define STRUCTCOPY(s, d) d = s 759 760 761 /* 762 ** Declarations of useful functions 763 */ 764 765 #if defined(__STDC__) && defined(_FORGIVING_CC_) 766 #define P(protos) protos 767 #else 768 #define P(protos) () 769 #endif 770 771 extern ADDRESS *parseaddr P((char *, ADDRESS *, int, char, char **, ENVELOPE *)); 772 extern char *xalloc P((int)); 773 extern bool sameaddr P((ADDRESS *, ADDRESS *)); 774 extern FILE *dfopen P((char *, char *)); 775 extern EVENT *setevent P((time_t, int(*)(), int)); 776 extern char *sfgets P((char *, int, FILE *, time_t)); 777 extern char *queuename P((ENVELOPE *, char)); 778 extern time_t curtime P(()); 779 extern bool transienterror P((int)); 780 extern char *errstring P((int)); 781 782 /* ellipsis is a different case though */ 783 #ifdef __STDC__ 784 extern void auth_warning(ENVELOPE *, char *, ...); 785 extern void syserr(char *, ...); 786 extern void usrerr(char *, ...); 787 extern void message(char *, ...); 788 extern void nmessage(char *, ...); 789 #else 790 extern void auth_warning(); 791 extern void syserr(); 792 extern void usrerr(); 793 extern void message(); 794 extern void nmessage(); 795 #endif 796