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 5.43 (Berkeley) 11/16/92 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 5.43 11/16/92"; 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 # define PSBUFSIZE (MAXNAME + MAXATOM) /* size of prescan buffer */ 48 49 50 /* 51 ** Data structure for bit maps. 52 ** 53 ** Each bit in this map can be referenced by an ascii character. 54 ** This is 128 possible bits, or 12 8-bit bytes. 55 */ 56 57 #define BITMAPBYTES 16 /* number of bytes in a bit map */ 58 #define BYTEBITS 8 /* number of bits in a byte */ 59 60 /* internal macros */ 61 #define _BITWORD(bit) (bit / (BYTEBITS * sizeof (int))) 62 #define _BITBIT(bit) (1 << (bit % (BYTEBITS * sizeof (int)))) 63 64 typedef int BITMAP[BITMAPBYTES / sizeof (int)]; 65 66 /* test bit number N */ 67 #define bitnset(bit, map) ((map)[_BITWORD(bit)] & _BITBIT(bit)) 68 69 /* set bit number N */ 70 #define setbitn(bit, map) (map)[_BITWORD(bit)] |= _BITBIT(bit) 71 72 /* clear bit number N */ 73 #define clrbitn(bit, map) (map)[_BITWORD(bit)] &= ~_BITBIT(bit) 74 75 /* clear an entire bit map */ 76 #define clrbitmap(map) bzero((char *) map, BITMAPBYTES) 77 /* 78 ** Address structure. 79 ** Addresses are stored internally in this structure. 80 */ 81 82 struct address 83 { 84 char *q_paddr; /* the printname for the address */ 85 char *q_user; /* user name */ 86 char *q_ruser; /* real user name, or NULL if q_user */ 87 char *q_host; /* host name */ 88 struct mailer *q_mailer; /* mailer to use */ 89 u_short q_flags; /* status flags, see below */ 90 uid_t q_uid; /* user-id of receiver (if known) */ 91 gid_t q_gid; /* group-id of receiver (if known) */ 92 char *q_home; /* home dir (local mailer only) */ 93 char *q_fullname; /* full name if known */ 94 struct address *q_next; /* chain */ 95 struct address *q_alias; /* address this results from */ 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 /* 110 ** Mailer definition structure. 111 ** Every mailer known to the system is declared in this 112 ** structure. It defines the pathname of the mailer, some 113 ** flags associated with it, and the argument vector to 114 ** pass to it. The flags are defined in conf.c 115 ** 116 ** The argument vector is expanded before actual use. All 117 ** words except the first are passed through the macro 118 ** processor. 119 */ 120 121 struct mailer 122 { 123 char *m_name; /* symbolic name of this mailer */ 124 char *m_mailer; /* pathname of the mailer to use */ 125 BITMAP m_flags; /* status flags, see below */ 126 short m_mno; /* mailer number internally */ 127 char **m_argv; /* template argument vector */ 128 short m_s_rwset; /* rewriting set for sender addresses */ 129 short m_r_rwset; /* rewriting set for recipient addresses */ 130 char *m_eol; /* end of line string */ 131 long m_maxsize; /* size limit on message to this mailer */ 132 int m_linelimit; /* max # characters per line */ 133 }; 134 135 typedef struct mailer MAILER; 136 137 /* bits for m_flags */ 138 # define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ 139 # define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ 140 # define M_ESCFROM 'E' /* escape From lines to >From */ 141 # define M_FOPT 'f' /* mailer takes picky -f flag */ 142 # define M_HST_UPPER 'h' /* preserve host case distinction */ 143 # define M_INTERNAL 'I' /* SMTP to another sendmail site */ 144 # define M_LOCAL 'l' /* delivery is to this host */ 145 # define M_LIMITS 'L' /* must enforce SMTP line limits */ 146 # define M_MUSER 'm' /* can handle multiple users at once */ 147 # define M_NHDR 'n' /* don't insert From line */ 148 # define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ 149 # define M_ROPT 'r' /* mailer takes picky -r flag */ 150 # define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */ 151 # define M_STRIPQ 's' /* strip quote chars from user/host */ 152 # define M_RESTR 'S' /* must be daemon to execute */ 153 # define M_USR_UPPER 'u' /* preserve user case distinction */ 154 # define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ 155 # define M_XDOT 'X' /* use hidden-dot algorithm */ 156 # define M_7BITS '7' /* use 7-bit path */ 157 158 EXTERN MAILER *Mailer[MAXMAILERS+1]; 159 160 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 161 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 162 /* 163 ** Header structure. 164 ** This structure is used internally to store header items. 165 */ 166 167 struct header 168 { 169 char *h_field; /* the name of the field */ 170 char *h_value; /* the value of that field */ 171 struct header *h_link; /* the next header */ 172 u_short h_flags; /* status bits, see below */ 173 BITMAP h_mflags; /* m_flags bits needed */ 174 }; 175 176 typedef struct header HDR; 177 178 /* 179 ** Header information structure. 180 ** Defined in conf.c, this struct declares the header fields 181 ** that have some magic meaning. 182 */ 183 184 struct hdrinfo 185 { 186 char *hi_field; /* the name of the field */ 187 u_short hi_flags; /* status bits, see below */ 188 }; 189 190 extern struct hdrinfo HdrInfo[]; 191 192 /* bits for h_flags and hi_flags */ 193 # define H_EOH 00001 /* this field terminates header */ 194 # define H_RCPT 00002 /* contains recipient addresses */ 195 # define H_DEFAULT 00004 /* if another value is found, drop this */ 196 # define H_RESENT 00010 /* this address is a "Resent-..." address */ 197 # define H_CHECK 00020 /* check h_mflags against m_flags */ 198 # define H_ACHECK 00040 /* ditto, but always (not just default) */ 199 # define H_FORCE 00100 /* force this field, even if default */ 200 # define H_TRACE 00200 /* this field contains trace information */ 201 # define H_FROM 00400 /* this is a from-type field */ 202 # define H_VALID 01000 /* this field has a validated value */ 203 /* 204 ** Envelope structure. 205 ** This structure defines the message itself. There is usually 206 ** only one of these -- for the message that we originally read 207 ** and which is our primary interest -- but other envelopes can 208 ** be generated during processing. For example, error messages 209 ** will have their own envelope. 210 */ 211 212 struct envelope 213 { 214 HDR *e_header; /* head of header list */ 215 long e_msgpriority; /* adjusted priority of this message */ 216 time_t e_ctime; /* time message appeared in the queue */ 217 char *e_to; /* the target person */ 218 char *e_receiptto; /* return receipt address */ 219 ADDRESS e_from; /* the person it is from */ 220 char *e_sender; /* string version of from person */ 221 char *e_returnpath; /* string version of return path */ 222 char **e_fromdomain; /* the domain part of the sender */ 223 ADDRESS *e_sendqueue; /* list of message recipients */ 224 ADDRESS *e_errorqueue; /* the queue for error responses */ 225 long e_msgsize; /* size of the message in bytes */ 226 int e_nrcpts; /* number of recipients */ 227 short e_class; /* msg class (priority, junk, etc.) */ 228 short e_flags; /* flags, see below */ 229 short e_hopcount; /* number of times processed */ 230 int (*e_puthdr)(); /* function to put header of message */ 231 int (*e_putbody)(); /* function to put body of message */ 232 struct envelope *e_parent; /* the message this one encloses */ 233 struct envelope *e_sibling; /* the next envelope of interest */ 234 char *e_df; /* location of temp file */ 235 FILE *e_dfp; /* temporary file */ 236 char *e_id; /* code for this entry in queue */ 237 FILE *e_xfp; /* transcript file */ 238 FILE *e_lockfp; /* the lock file for this message */ 239 char *e_message; /* error message */ 240 char *e_macro[128]; /* macro definitions */ 241 }; 242 243 typedef struct envelope ENVELOPE; 244 245 /* values for e_flags */ 246 #define EF_OLDSTYLE 000001 /* use spaces (not commas) in hdrs */ 247 #define EF_INQUEUE 000002 /* this message is fully queued */ 248 #define EF_TIMEOUT 000004 /* this message is too old */ 249 #define EF_CLRQUEUE 000010 /* disk copy is no longer needed */ 250 #define EF_SENDRECEIPT 000020 /* send a return receipt */ 251 #define EF_FATALERRS 000040 /* fatal errors occured */ 252 #define EF_KEEPQUEUE 000100 /* keep queue files always */ 253 #define EF_RESPONSE 000200 /* this is an error or return receipt */ 254 #define EF_RESENT 000400 /* this message is being forwarded */ 255 256 EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ 257 /* 258 ** Message priority classes. 259 ** 260 ** The message class is read directly from the Priority: header 261 ** field in the message. 262 ** 263 ** CurEnv->e_msgpriority is the number of bytes in the message plus 264 ** the creation time (so that jobs ``tend'' to be ordered correctly), 265 ** adjusted by the message class, the number of recipients, and the 266 ** amount of time the message has been sitting around. This number 267 ** is used to order the queue. Higher values mean LOWER priority. 268 ** 269 ** Each priority class point is worth WkClassFact priority points; 270 ** each recipient is worth WkRecipFact priority points. Each time 271 ** we reprocess a message the priority is adjusted by WkTimeFact. 272 ** WkTimeFact should normally decrease the priority so that jobs 273 ** that have historically failed will be run later; thanks go to 274 ** Jay Lepreau at Utah for pointing out the error in my thinking. 275 ** 276 ** The "class" is this number, unadjusted by the age or size of 277 ** this message. Classes with negative representations will have 278 ** error messages thrown away if they are not local. 279 */ 280 281 struct priority 282 { 283 char *pri_name; /* external name of priority */ 284 int pri_val; /* internal value for same */ 285 }; 286 287 EXTERN struct priority Priorities[MAXPRIORITIES]; 288 EXTERN int NumPriorities; /* pointer into Priorities */ 289 /* 290 ** Rewrite rules. 291 */ 292 293 struct rewrite 294 { 295 char **r_lhs; /* pattern match */ 296 char **r_rhs; /* substitution value */ 297 struct rewrite *r_next;/* next in chain */ 298 }; 299 300 EXTERN struct rewrite *RewriteRules[MAXRWSETS]; 301 302 /* 303 ** Special characters in rewriting rules. 304 ** These are used internally only. 305 ** The COND* rules are actually used in macros rather than in 306 ** rewriting rules, but are given here because they 307 ** cannot conflict. 308 */ 309 310 /* left hand side items */ 311 # define MATCHZANY '\020' /* match zero or more tokens */ 312 # define MATCHANY '\021' /* match one or more tokens */ 313 # define MATCHONE '\022' /* match exactly one token */ 314 # define MATCHCLASS '\023' /* match one token in a class */ 315 # define MATCHNCLASS '\024' /* match anything not in class */ 316 # define MATCHREPL '\025' /* replacement on RHS for above */ 317 318 /* right hand side items */ 319 # define CANONNET '\026' /* canonical net, next token */ 320 # define CANONHOST '\027' /* canonical host, next token */ 321 # define CANONUSER '\030' /* canonical user, next N tokens */ 322 # define CALLSUBR '\031' /* call another rewriting set */ 323 324 /* conditionals in macros */ 325 # define CONDIF '\032' /* conditional if-then */ 326 # define CONDELSE '\033' /* conditional else */ 327 # define CONDFI '\034' /* conditional fi */ 328 329 /* bracket characters for host name lookup */ 330 # define HOSTBEGIN '\035' /* hostname lookup begin */ 331 # define HOSTEND '\036' /* hostname lookup end */ 332 333 /* bracket characters for generalized lookup */ 334 # define LOOKUPBEGIN '\005' /* generalized lookup begin */ 335 # define LOOKUPEND '\006' /* generalized lookup end */ 336 337 /* \001 is also reserved as the macro expansion character */ 338 339 /* external <==> internal mapping table */ 340 struct metamac 341 { 342 char metaname; /* external code (after $) */ 343 char metaval; /* internal code (as above) */ 344 }; 345 /* 346 ** Information about currently open connections to mailers, or to 347 ** hosts that we have looked up recently. 348 */ 349 350 # define MCI struct mailer_con_info 351 352 MCI 353 { 354 short mci_flags; /* flag bits, see below */ 355 short mci_errno; /* error number on last connection */ 356 short mci_exitstat; /* exit status from last connection */ 357 short mci_state; /* SMTP state */ 358 FILE *mci_in; /* input side of connection */ 359 FILE *mci_out; /* output side of connection */ 360 int mci_pid; /* process id of subordinate proc */ 361 char *mci_phase; /* SMTP phase string */ 362 struct mailer *mci_mailer; /* ptr to the mailer for this conn */ 363 char *mci_host; /* host name */ 364 time_t mci_lastuse; /* last usage time */ 365 }; 366 367 368 /* flag bits */ 369 #define MCIF_VALID 00001 /* this entry is valid */ 370 #define MCIF_TEMP 00002 /* don't cache this connection */ 371 #define MCIF_CACHED 00004 /* currently in open cache */ 372 373 /* states */ 374 #define MCIS_CLOSED 0 /* no traffic on this connection */ 375 #define MCIS_OPENING 1 /* sending initial protocol */ 376 #define MCIS_OPEN 2 /* open, initial protocol sent */ 377 #define MCIS_ACTIVE 3 /* message being sent */ 378 #define MCIS_QUITING 4 /* running quit protocol */ 379 #define MCIS_SSD 5 /* service shutting down */ 380 #define MCIS_ERROR 6 /* I/O error on connection */ 381 /* 382 ** Mapping functions 383 ** 384 ** These allow arbitrary mappings in the config file. The idea 385 ** (albeit not the implementation) comes from IDA sendmail. 386 */ 387 388 389 /* 390 ** The class of a map -- essentially the functions to call 391 */ 392 393 # define MAPCLASS struct _mapclass 394 395 MAPCLASS 396 { 397 bool (*map_init)(); /* initialization function */ 398 char *(*map_lookup)(); /* lookup function */ 399 }; 400 401 402 /* 403 ** An actual map. 404 */ 405 406 # define MAP struct _map 407 408 MAP 409 { 410 MAPCLASS *map_class; /* the class of this map */ 411 int map_flags; /* flags, see below */ 412 char *map_file; /* the (nominal) filename */ 413 void *map_db; /* the open database ptr */ 414 char *map_app; /* to append to successful matches */ 415 }; 416 417 /* bit values for map_flags */ 418 # define MF_VALID 00001 /* this entry is valid */ 419 # define MF_INCLNULL 00002 /* include null byte in key */ 420 # define MF_OPTIONAL 00004 /* don't complain if map not found */ 421 # define MF_FOLDCASE 00010 /* fold case in keys */ 422 /* 423 ** Symbol table definitions 424 */ 425 426 struct symtab 427 { 428 char *s_name; /* name to be entered */ 429 char s_type; /* general type (see below) */ 430 struct symtab *s_next; /* pointer to next in chain */ 431 union 432 { 433 BITMAP sv_class; /* bit-map of word classes */ 434 ADDRESS *sv_addr; /* pointer to address header */ 435 MAILER *sv_mailer; /* pointer to mailer */ 436 char *sv_alias; /* alias */ 437 MAPCLASS sv_mapclass; /* mapping function class */ 438 MAP sv_map; /* mapping function */ 439 MCI sv_mci; /* mailer connection info */ 440 } s_value; 441 }; 442 443 typedef struct symtab STAB; 444 445 /* symbol types */ 446 # define ST_UNDEF 0 /* undefined type */ 447 # define ST_CLASS 1 /* class map */ 448 # define ST_ADDRESS 2 /* an address in parsed format */ 449 # define ST_MAILER 3 /* a mailer header */ 450 # define ST_ALIAS 4 /* an alias */ 451 # define ST_MAPCLASS 5 /* mapping function class */ 452 # define ST_MAP 6 /* mapping function */ 453 # define ST_MCI 16 /* mailer connection info (offset) */ 454 455 # define s_class s_value.sv_class 456 # define s_address s_value.sv_addr 457 # define s_mailer s_value.sv_mailer 458 # define s_alias s_value.sv_alias 459 # define s_mci s_value.sv_mci 460 # define s_mapclass s_value.sv_mapclass 461 # define s_map s_value.sv_map 462 463 extern STAB *stab(); 464 465 /* opcodes to stab */ 466 # define ST_FIND 0 /* find entry */ 467 # define ST_ENTER 1 /* enter if not there */ 468 /* 469 ** STRUCT EVENT -- event queue. 470 ** 471 ** Maintained in sorted order. 472 ** 473 ** We store the pid of the process that set this event to insure 474 ** that when we fork we will not take events intended for the parent. 475 */ 476 477 struct event 478 { 479 time_t ev_time; /* time of the function call */ 480 int (*ev_func)(); /* function to call */ 481 int ev_arg; /* argument to ev_func */ 482 int ev_pid; /* pid that set this event */ 483 struct event *ev_link; /* link to next item */ 484 }; 485 486 typedef struct event EVENT; 487 488 EXTERN EVENT *EventQueue; /* head of event queue */ 489 /* 490 ** Operation, send, and error modes 491 ** 492 ** The operation mode describes the basic operation of sendmail. 493 ** This can be set from the command line, and is "send mail" by 494 ** default. 495 ** 496 ** The send mode tells how to send mail. It can be set in the 497 ** configuration file. It's setting determines how quickly the 498 ** mail will be delivered versus the load on your system. If the 499 ** -v (verbose) flag is given, it will be forced to SM_DELIVER 500 ** mode. 501 ** 502 ** The error mode tells how to return errors. 503 */ 504 505 EXTERN char OpMode; /* operation mode, see below */ 506 507 #define MD_DELIVER 'm' /* be a mail sender */ 508 #define MD_SMTP 's' /* run SMTP on standard input */ 509 #define MD_DAEMON 'd' /* run as a daemon */ 510 #define MD_VERIFY 'v' /* verify: don't collect or deliver */ 511 #define MD_TEST 't' /* test mode: resolve addrs only */ 512 #define MD_INITALIAS 'i' /* initialize alias database */ 513 #define MD_PRINT 'p' /* print the queue */ 514 #define MD_FREEZE 'z' /* freeze the configuration file */ 515 516 517 EXTERN char SendMode; /* send mode, see below */ 518 519 #define SM_DELIVER 'i' /* interactive delivery */ 520 #define SM_QUICKD 'j' /* deliver w/o queueing */ 521 #define SM_FORK 'b' /* deliver in background */ 522 #define SM_QUEUE 'q' /* queue, don't deliver */ 523 #define SM_VERIFY 'v' /* verify only (used internally) */ 524 525 /* used only as a parameter to sendall */ 526 #define SM_DEFAULT '\0' /* unspecified, use SendMode */ 527 528 529 EXTERN char ErrorMode; /* error mode, see below */ 530 531 #define EM_PRINT 'p' /* print errors */ 532 #define EM_MAIL 'm' /* mail back errors */ 533 #define EM_WRITE 'w' /* write back errors */ 534 #define EM_BERKNET 'e' /* special berknet processing */ 535 #define EM_QUIET 'q' /* don't print messages (stat only) */ 536 537 /* offset used to issure that the error messages for name server error 538 * codes are unique. 539 */ 540 #define MAX_ERRNO 100 541 /* 542 ** Global variables. 543 */ 544 545 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 546 EXTERN bool NoAlias; /* if set, don't do any aliasing */ 547 EXTERN bool ForceMail; /* if set, mail even if already got a copy */ 548 EXTERN bool MeToo; /* send to the sender also */ 549 EXTERN bool IgnrDot; /* don't let dot end messages */ 550 EXTERN bool SaveFrom; /* save leading "From" lines */ 551 EXTERN bool Verbose; /* set if blow-by-blow desired */ 552 EXTERN bool GrabTo; /* if set, get recipients from msg */ 553 EXTERN bool NoReturn; /* don't return letter to sender */ 554 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 555 EXTERN bool QueueRun; /* currently running message from the queue */ 556 EXTERN bool HoldErrs; /* only output errors to transcript */ 557 EXTERN bool NoConnect; /* don't connect to non-local mailers */ 558 EXTERN bool SuperSafe; /* be extra careful, even if expensive */ 559 EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ 560 EXTERN bool AutoRebuild; /* auto-rebuild the alias database as needed */ 561 EXTERN bool CheckAliases; /* parse addresses during newaliases */ 562 EXTERN bool UseNameServer; /* use internet domain name server */ 563 EXTERN bool EightBit; /* try to preserve 8-bit data */ 564 EXTERN int SafeAlias; /* minutes to wait until @:@ in alias file */ 565 EXTERN time_t TimeOut; /* time until timeout */ 566 EXTERN FILE *InChannel; /* input connection */ 567 EXTERN FILE *OutChannel; /* output connection */ 568 EXTERN uid_t RealUid; /* when Daemon, real uid of caller */ 569 EXTERN gid_t RealGid; /* when Daemon, real gid of caller */ 570 EXTERN uid_t DefUid; /* default uid to run as */ 571 EXTERN gid_t DefGid; /* default gid to run as */ 572 EXTERN char *DefUser; /* default user to run as (from DefUid) */ 573 EXTERN int OldUmask; /* umask when sendmail starts up */ 574 EXTERN int Errors; /* set if errors (local to single pass) */ 575 EXTERN int ExitStat; /* exit status code */ 576 EXTERN int AliasLevel; /* depth of aliasing */ 577 EXTERN int MotherPid; /* proc id of parent process */ 578 EXTERN int LineNumber; /* line number in current input */ 579 EXTERN time_t ReadTimeout; /* timeout on reads */ 580 EXTERN int LogLevel; /* level of logging to perform */ 581 EXTERN int FileMode; /* mode on files */ 582 EXTERN int QueueLA; /* load average starting forced queueing */ 583 EXTERN int RefuseLA; /* load average refusing connections are */ 584 EXTERN int CurrentLA; /* current load average */ 585 EXTERN int QueueFactor; /* slope of queue function */ 586 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 587 EXTERN char *AliasFile; /* location of alias file */ 588 EXTERN char *HelpFile; /* location of SMTP help file */ 589 EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ 590 EXTERN char *StatFile; /* location of statistics summary */ 591 EXTERN char *QueueDir; /* location of queue directory */ 592 EXTERN char *FileName; /* name to print on error messages */ 593 EXTERN char *SmtpPhase; /* current phase in SMTP processing */ 594 EXTERN char *MyHostName; /* name of this host for SMTP messages */ 595 EXTERN char *RealHostName; /* name of host we are talking to */ 596 EXTERN struct sockaddr_in RealHostAddr;/* address of host we are talking to */ 597 EXTERN char *CurHostName; /* current host we are dealing with */ 598 EXTERN jmp_buf TopFrame; /* branch-to-top-of-loop-on-error frame */ 599 EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ 600 EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ 601 extern char *ConfFile; /* location of configuration file [conf.c] */ 602 extern char *FreezeFile; /* location of frozen memory image [conf.c] */ 603 extern char Arpa_Info[]; /* the reply code for Arpanet info [conf.c] */ 604 extern ADDRESS NullAddress; /* a null (template) address [main.c] */ 605 EXTERN char SpaceSub; /* substitution for <lwsp> */ 606 EXTERN int WkClassFact; /* multiplier for message class -> priority */ 607 EXTERN int WkRecipFact; /* multiplier for # of recipients -> priority */ 608 EXTERN int WkTimeFact; /* priority offset each time this job is run */ 609 EXTERN char *PostMasterCopy; /* address to get errs cc's */ 610 EXTERN char *TrustedUsers[MAXTRUST+1]; /* list of trusted users */ 611 EXTERN char *UserEnviron[MAXUSERENVIRON+1]; /* saved user environment */ 612 EXTERN int CheckpointInterval; /* queue file checkpoint interval */ 613 EXTERN bool NoWildcardMX; /* we don't have wildcard MX records */ 614 EXTERN char *UdbSpec; /* user database source spec [udbexpand.c] */ 615 EXTERN int MaxHopCount; /* number of hops until we give an error */ 616 EXTERN int ConfigLevel; /* config file level -- what does .cf expect? */ 617 EXTERN char *TimeZoneSpec; /* override time zone specification */ 618 EXTERN bool MatchGecos; /* look for user names in gecos field */ 619 EXTERN int MaxMciCache; /* maximum entries in MCI cache */ 620 EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ 621 /* 622 ** Trace information 623 */ 624 625 /* trace vector and macros for debugging flags */ 626 EXTERN u_char tTdvect[100]; 627 # define tTd(flag, level) (tTdvect[flag] >= level) 628 # define tTdlevel(flag) (tTdvect[flag]) 629 /* 630 ** Miscellaneous information. 631 */ 632 633 634 635 /* 636 ** Some in-line functions 637 */ 638 639 /* set exit status */ 640 #define setstat(s) { \ 641 if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ 642 ExitStat = s; \ 643 } 644 645 /* make a copy of a string */ 646 #define newstr(s) strcpy(xalloc(strlen(s) + 1), s) 647 648 #define STRUCTCOPY(s, d) d = s 649 650 651 /* 652 ** Declarations of useful functions 653 */ 654 655 extern ADDRESS *parseaddr(); 656 extern char *xalloc(); 657 extern bool sameaddr(); 658 extern FILE *dfopen(); 659 extern EVENT *setevent(); 660 extern char *sfgets(); 661 extern char *queuename(); 662 extern time_t curtime(); 663