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 6.10 (Berkeley) 02/16/93 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 6.10 02/16/93"; 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 struct address *q_tchain; /* temporary use chain */ 96 time_t q_timeout; /* timeout for this address */ 97 }; 98 99 typedef struct address ADDRESS; 100 101 # define QDONTSEND 000001 /* don't send to this address */ 102 # define QBADADDR 000002 /* this address is verified bad */ 103 # define QGOODUID 000004 /* the q_uid q_gid fields are good */ 104 # define QPRIMARY 000010 /* set from argv */ 105 # define QQUEUEUP 000020 /* queue for later transmission */ 106 # define QSENT 000040 /* has been successfully delivered */ 107 # define QNOTREMOTE 000100 /* not an address for remote forwarding */ 108 /* 109 ** Mailer definition structure. 110 ** Every mailer known to the system is declared in this 111 ** structure. It defines the pathname of the mailer, some 112 ** flags associated with it, and the argument vector to 113 ** pass to it. The flags are defined in conf.c 114 ** 115 ** The argument vector is expanded before actual use. All 116 ** words except the first are passed through the macro 117 ** processor. 118 */ 119 120 struct mailer 121 { 122 char *m_name; /* symbolic name of this mailer */ 123 char *m_mailer; /* pathname of the mailer to use */ 124 BITMAP m_flags; /* status flags, see below */ 125 short m_mno; /* mailer number internally */ 126 char **m_argv; /* template argument vector */ 127 short m_sh_rwset; /* rewrite set: sender header addresses */ 128 short m_se_rwset; /* rewrite set: sender envelope addresses */ 129 short m_rh_rwset; /* rewrite set: recipient header addresses */ 130 short m_re_rwset; /* rewrite set: recipient envelope addresses */ 131 char *m_eol; /* end of line string */ 132 long m_maxsize; /* size limit on message to this mailer */ 133 int m_linelimit; /* max # characters per line */ 134 }; 135 136 typedef struct mailer MAILER; 137 138 /* bits for m_flags */ 139 # define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ 140 # define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ 141 # define M_ESCFROM 'E' /* escape From lines to >From */ 142 # define M_FOPT 'f' /* mailer takes picky -f flag */ 143 # define M_HST_UPPER 'h' /* preserve host case distinction */ 144 # define M_INTERNAL 'I' /* SMTP to another sendmail site */ 145 # define M_LOCAL 'l' /* delivery is to this host */ 146 # define M_LIMITS 'L' /* must enforce SMTP line limits */ 147 # define M_MUSER 'm' /* can handle multiple users at once */ 148 # define M_NHDR 'n' /* don't insert From line */ 149 # define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ 150 # define M_ROPT 'r' /* mailer takes picky -r flag */ 151 # define M_SECURE_PORT 'R' /* try to send on a reserved TCP port */ 152 # define M_STRIPQ 's' /* strip quote chars from user/host */ 153 # define M_RESTR 'S' /* must be daemon to execute */ 154 # define M_USR_UPPER 'u' /* preserve user case distinction */ 155 # define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ 156 # define M_XDOT 'X' /* use hidden-dot algorithm */ 157 # define M_7BITS '7' /* use 7-bit path */ 158 159 EXTERN MAILER *Mailer[MAXMAILERS+1]; 160 161 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 162 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 163 EXTERN MAILER *FileMailer; /* ptr to *file* mailer */ 164 EXTERN MAILER *InclMailer; /* ptr to *include* mailer */ 165 /* 166 ** Header structure. 167 ** This structure is used internally to store header items. 168 */ 169 170 struct header 171 { 172 char *h_field; /* the name of the field */ 173 char *h_value; /* the value of that field */ 174 struct header *h_link; /* the next header */ 175 u_short h_flags; /* status bits, see below */ 176 BITMAP h_mflags; /* m_flags bits needed */ 177 }; 178 179 typedef struct header HDR; 180 181 /* 182 ** Header information structure. 183 ** Defined in conf.c, this struct declares the header fields 184 ** that have some magic meaning. 185 */ 186 187 struct hdrinfo 188 { 189 char *hi_field; /* the name of the field */ 190 u_short hi_flags; /* status bits, see below */ 191 }; 192 193 extern struct hdrinfo HdrInfo[]; 194 195 /* bits for h_flags and hi_flags */ 196 # define H_EOH 00001 /* this field terminates header */ 197 # define H_RCPT 00002 /* contains recipient addresses */ 198 # define H_DEFAULT 00004 /* if another value is found, drop this */ 199 # define H_RESENT 00010 /* this address is a "Resent-..." address */ 200 # define H_CHECK 00020 /* check h_mflags against m_flags */ 201 # define H_ACHECK 00040 /* ditto, but always (not just default) */ 202 # define H_FORCE 00100 /* force this field, even if default */ 203 # define H_TRACE 00200 /* this field contains trace information */ 204 # define H_FROM 00400 /* this is a from-type field */ 205 # define H_VALID 01000 /* this field has a validated value */ 206 # define H_RECEIPTTO 02000 /* this field has return receipt info */ 207 # define H_ERRORSTO 04000 /* this field has error address info */ 208 /* 209 ** Envelope structure. 210 ** This structure defines the message itself. There is usually 211 ** only one of these -- for the message that we originally read 212 ** and which is our primary interest -- but other envelopes can 213 ** be generated during processing. For example, error messages 214 ** will have their own envelope. 215 */ 216 217 struct envelope 218 { 219 HDR *e_header; /* head of header list */ 220 long e_msgpriority; /* adjusted priority of this message */ 221 time_t e_ctime; /* time message appeared in the queue */ 222 char *e_to; /* the target person */ 223 char *e_receiptto; /* return receipt address */ 224 ADDRESS e_from; /* the person it is from */ 225 char *e_sender; /* string version of from person */ 226 char *e_returnpath; /* string version of return path */ 227 char **e_fromdomain; /* the domain part of the sender */ 228 ADDRESS *e_sendqueue; /* list of message recipients */ 229 ADDRESS *e_errorqueue; /* the queue for error responses */ 230 long e_msgsize; /* size of the message in bytes */ 231 int e_nrcpts; /* number of recipients */ 232 short e_class; /* msg class (priority, junk, etc.) */ 233 short e_flags; /* flags, see below */ 234 short e_hopcount; /* number of times processed */ 235 short e_nsent; /* number of sends since checkpoint */ 236 int (*e_puthdr)(); /* function to put header of message */ 237 int (*e_putbody)(); /* function to put body of message */ 238 struct envelope *e_parent; /* the message this one encloses */ 239 struct envelope *e_sibling; /* the next envelope of interest */ 240 char *e_df; /* location of temp file */ 241 FILE *e_dfp; /* temporary file */ 242 char *e_id; /* code for this entry in queue */ 243 FILE *e_xfp; /* transcript file */ 244 FILE *e_lockfp; /* the lock file for this message */ 245 char *e_message; /* error message */ 246 char *e_macro[128]; /* macro definitions */ 247 }; 248 249 typedef struct envelope ENVELOPE; 250 251 /* values for e_flags */ 252 #define EF_OLDSTYLE 000001 /* use spaces (not commas) in hdrs */ 253 #define EF_INQUEUE 000002 /* this message is fully queued */ 254 #define EF_TIMEOUT 000004 /* this message is too old */ 255 #define EF_CLRQUEUE 000010 /* disk copy is no longer needed */ 256 #define EF_SENDRECEIPT 000020 /* send a return receipt */ 257 #define EF_FATALERRS 000040 /* fatal errors occured */ 258 #define EF_KEEPQUEUE 000100 /* keep queue files always */ 259 #define EF_RESPONSE 000200 /* this is an error or return receipt */ 260 #define EF_RESENT 000400 /* this message is being forwarded */ 261 262 EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ 263 /* 264 ** Message priority classes. 265 ** 266 ** The message class is read directly from the Priority: header 267 ** field in the message. 268 ** 269 ** CurEnv->e_msgpriority is the number of bytes in the message plus 270 ** the creation time (so that jobs ``tend'' to be ordered correctly), 271 ** adjusted by the message class, the number of recipients, and the 272 ** amount of time the message has been sitting around. This number 273 ** is used to order the queue. Higher values mean LOWER priority. 274 ** 275 ** Each priority class point is worth WkClassFact priority points; 276 ** each recipient is worth WkRecipFact priority points. Each time 277 ** we reprocess a message the priority is adjusted by WkTimeFact. 278 ** WkTimeFact should normally decrease the priority so that jobs 279 ** that have historically failed will be run later; thanks go to 280 ** Jay Lepreau at Utah for pointing out the error in my thinking. 281 ** 282 ** The "class" is this number, unadjusted by the age or size of 283 ** this message. Classes with negative representations will have 284 ** error messages thrown away if they are not local. 285 */ 286 287 struct priority 288 { 289 char *pri_name; /* external name of priority */ 290 int pri_val; /* internal value for same */ 291 }; 292 293 EXTERN struct priority Priorities[MAXPRIORITIES]; 294 EXTERN int NumPriorities; /* pointer into Priorities */ 295 /* 296 ** Rewrite rules. 297 */ 298 299 struct rewrite 300 { 301 char **r_lhs; /* pattern match */ 302 char **r_rhs; /* substitution value */ 303 struct rewrite *r_next;/* next in chain */ 304 }; 305 306 EXTERN struct rewrite *RewriteRules[MAXRWSETS]; 307 308 /* 309 ** Special characters in rewriting rules. 310 ** These are used internally only. 311 ** The COND* rules are actually used in macros rather than in 312 ** rewriting rules, but are given here because they 313 ** cannot conflict. 314 */ 315 316 /* left hand side items */ 317 # define MATCHZANY '\020' /* match zero or more tokens */ 318 # define MATCHANY '\021' /* match one or more tokens */ 319 # define MATCHONE '\022' /* match exactly one token */ 320 # define MATCHCLASS '\023' /* match one token in a class */ 321 # define MATCHNCLASS '\024' /* match anything not in class */ 322 # define MATCHREPL '\025' /* replacement on RHS for above */ 323 324 /* right hand side items */ 325 # define CANONNET '\026' /* canonical net, next token */ 326 # define CANONHOST '\027' /* canonical host, next token */ 327 # define CANONUSER '\030' /* canonical user, next N tokens */ 328 # define CALLSUBR '\031' /* call another rewriting set */ 329 330 /* conditionals in macros */ 331 # define CONDIF '\032' /* conditional if-then */ 332 # define CONDELSE '\033' /* conditional else */ 333 # define CONDFI '\034' /* conditional fi */ 334 335 /* bracket characters for host name lookup */ 336 # define HOSTBEGIN '\035' /* hostname lookup begin */ 337 # define HOSTEND '\036' /* hostname lookup end */ 338 339 /* bracket characters for generalized lookup */ 340 # define LOOKUPBEGIN '\005' /* generalized lookup begin */ 341 # define LOOKUPEND '\006' /* generalized lookup end */ 342 343 /* \001 is also reserved as the macro expansion character */ 344 345 /* external <==> internal mapping table */ 346 struct metamac 347 { 348 char metaname; /* external code (after $) */ 349 char metaval; /* internal code (as above) */ 350 }; 351 /* 352 ** Information about currently open connections to mailers, or to 353 ** hosts that we have looked up recently. 354 */ 355 356 # define MCI struct mailer_con_info 357 358 MCI 359 { 360 short mci_flags; /* flag bits, see below */ 361 short mci_errno; /* error number on last connection */ 362 short mci_exitstat; /* exit status from last connection */ 363 short mci_state; /* SMTP state */ 364 FILE *mci_in; /* input side of connection */ 365 FILE *mci_out; /* output side of connection */ 366 int mci_pid; /* process id of subordinate proc */ 367 char *mci_phase; /* SMTP phase string */ 368 struct mailer *mci_mailer; /* ptr to the mailer for this conn */ 369 char *mci_host; /* host name */ 370 time_t mci_lastuse; /* last usage time */ 371 }; 372 373 374 /* flag bits */ 375 #define MCIF_VALID 00001 /* this entry is valid */ 376 #define MCIF_TEMP 00002 /* don't cache this connection */ 377 #define MCIF_CACHED 00004 /* currently in open cache */ 378 379 /* states */ 380 #define MCIS_CLOSED 0 /* no traffic on this connection */ 381 #define MCIS_OPENING 1 /* sending initial protocol */ 382 #define MCIS_OPEN 2 /* open, initial protocol sent */ 383 #define MCIS_ACTIVE 3 /* message being sent */ 384 #define MCIS_QUITING 4 /* running quit protocol */ 385 #define MCIS_SSD 5 /* service shutting down */ 386 #define MCIS_ERROR 6 /* I/O error on connection */ 387 /* 388 ** Mapping functions 389 ** 390 ** These allow arbitrary mappings in the config file. The idea 391 ** (albeit not the implementation) comes from IDA sendmail. 392 */ 393 394 395 /* 396 ** The class of a map -- essentially the functions to call 397 */ 398 399 # define MAPCLASS struct _mapclass 400 401 MAPCLASS 402 { 403 bool (*map_init)(); /* initialization function */ 404 char *(*map_lookup)(); /* lookup function */ 405 }; 406 407 408 /* 409 ** An actual map. 410 */ 411 412 # define MAP struct _map 413 414 MAP 415 { 416 MAPCLASS *map_class; /* the class of this map */ 417 int map_flags; /* flags, see below */ 418 char *map_file; /* the (nominal) filename */ 419 void *map_db; /* the open database ptr */ 420 char *map_app; /* to append to successful matches */ 421 char *map_domain; /* the (nominal) NIS domain */ 422 }; 423 424 /* bit values for map_flags */ 425 # define MF_VALID 00001 /* this entry is valid */ 426 # define MF_INCLNULL 00002 /* include null byte in key */ 427 # define MF_OPTIONAL 00004 /* don't complain if map not found */ 428 # define MF_NOFOLDCASE 00010 /* don't fold case in keys */ 429 # define MF_MATCHONLY 00020 /* don't use the map value */ 430 /* 431 ** Symbol table definitions 432 */ 433 434 struct symtab 435 { 436 char *s_name; /* name to be entered */ 437 char s_type; /* general type (see below) */ 438 struct symtab *s_next; /* pointer to next in chain */ 439 union 440 { 441 BITMAP sv_class; /* bit-map of word classes */ 442 ADDRESS *sv_addr; /* pointer to address header */ 443 MAILER *sv_mailer; /* pointer to mailer */ 444 char *sv_alias; /* alias */ 445 MAPCLASS sv_mapclass; /* mapping function class */ 446 MAP sv_map; /* mapping function */ 447 char *sv_hostsig; /* host signature */ 448 MCI sv_mci; /* mailer connection info */ 449 } s_value; 450 }; 451 452 typedef struct symtab STAB; 453 454 /* symbol types */ 455 # define ST_UNDEF 0 /* undefined type */ 456 # define ST_CLASS 1 /* class map */ 457 # define ST_ADDRESS 2 /* an address in parsed format */ 458 # define ST_MAILER 3 /* a mailer header */ 459 # define ST_ALIAS 4 /* an alias */ 460 # define ST_MAPCLASS 5 /* mapping function class */ 461 # define ST_MAP 6 /* mapping function */ 462 # define ST_HOSTSIG 7 /* host signature */ 463 # define ST_MCI 16 /* mailer connection info (offset) */ 464 465 # define s_class s_value.sv_class 466 # define s_address s_value.sv_addr 467 # define s_mailer s_value.sv_mailer 468 # define s_alias s_value.sv_alias 469 # define s_mci s_value.sv_mci 470 # define s_mapclass s_value.sv_mapclass 471 # define s_hostsig s_value.sv_hostsig 472 # define s_map s_value.sv_map 473 474 extern STAB *stab(); 475 476 /* opcodes to stab */ 477 # define ST_FIND 0 /* find entry */ 478 # define ST_ENTER 1 /* enter if not there */ 479 /* 480 ** STRUCT EVENT -- event queue. 481 ** 482 ** Maintained in sorted order. 483 ** 484 ** We store the pid of the process that set this event to insure 485 ** that when we fork we will not take events intended for the parent. 486 */ 487 488 struct event 489 { 490 time_t ev_time; /* time of the function call */ 491 int (*ev_func)(); /* function to call */ 492 int ev_arg; /* argument to ev_func */ 493 int ev_pid; /* pid that set this event */ 494 struct event *ev_link; /* link to next item */ 495 }; 496 497 typedef struct event EVENT; 498 499 EXTERN EVENT *EventQueue; /* head of event queue */ 500 /* 501 ** Operation, send, and error modes 502 ** 503 ** The operation mode describes the basic operation of sendmail. 504 ** This can be set from the command line, and is "send mail" by 505 ** default. 506 ** 507 ** The send mode tells how to send mail. It can be set in the 508 ** configuration file. It's setting determines how quickly the 509 ** mail will be delivered versus the load on your system. If the 510 ** -v (verbose) flag is given, it will be forced to SM_DELIVER 511 ** mode. 512 ** 513 ** The error mode tells how to return errors. 514 */ 515 516 EXTERN char OpMode; /* operation mode, see below */ 517 518 #define MD_DELIVER 'm' /* be a mail sender */ 519 #define MD_SMTP 's' /* run SMTP on standard input */ 520 #define MD_DAEMON 'd' /* run as a daemon */ 521 #define MD_VERIFY 'v' /* verify: don't collect or deliver */ 522 #define MD_TEST 't' /* test mode: resolve addrs only */ 523 #define MD_INITALIAS 'i' /* initialize alias database */ 524 #define MD_PRINT 'p' /* print the queue */ 525 #define MD_FREEZE 'z' /* freeze the configuration file */ 526 527 528 EXTERN char SendMode; /* send mode, see below */ 529 530 #define SM_DELIVER 'i' /* interactive delivery */ 531 #define SM_QUICKD 'j' /* deliver w/o queueing */ 532 #define SM_FORK 'b' /* deliver in background */ 533 #define SM_QUEUE 'q' /* queue, don't deliver */ 534 #define SM_VERIFY 'v' /* verify only (used internally) */ 535 536 /* used only as a parameter to sendall */ 537 #define SM_DEFAULT '\0' /* unspecified, use SendMode */ 538 539 540 EXTERN char ErrorMode; /* error mode, see below */ 541 542 #define EM_PRINT 'p' /* print errors */ 543 #define EM_MAIL 'm' /* mail back errors */ 544 #define EM_WRITE 'w' /* write back errors */ 545 #define EM_BERKNET 'e' /* special berknet processing */ 546 #define EM_QUIET 'q' /* don't print messages (stat only) */ 547 548 /* offset used to issure that the error messages for name server error 549 * codes are unique. 550 */ 551 #define MAX_ERRNO 100 552 /* 553 ** Global variables. 554 */ 555 556 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 557 EXTERN bool NoAlias; /* if set, don't do any aliasing */ 558 EXTERN bool ForceMail; /* if set, mail even if already got a copy */ 559 EXTERN bool MeToo; /* send to the sender also */ 560 EXTERN bool IgnrDot; /* don't let dot end messages */ 561 EXTERN bool SaveFrom; /* save leading "From" lines */ 562 EXTERN bool Verbose; /* set if blow-by-blow desired */ 563 EXTERN bool GrabTo; /* if set, get recipients from msg */ 564 EXTERN bool NoReturn; /* don't return letter to sender */ 565 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 566 EXTERN bool QueueRun; /* currently running message from the queue */ 567 EXTERN bool HoldErrs; /* only output errors to transcript */ 568 EXTERN bool NoConnect; /* don't connect to non-local mailers */ 569 EXTERN bool SuperSafe; /* be extra careful, even if expensive */ 570 EXTERN bool ForkQueueRuns; /* fork for each job when running the queue */ 571 EXTERN bool AutoRebuild; /* auto-rebuild the alias database as needed */ 572 EXTERN bool CheckAliases; /* parse addresses during newaliases */ 573 EXTERN bool UseNameServer; /* use internet domain name server */ 574 EXTERN bool EightBit; /* try to preserve 8-bit data */ 575 EXTERN int SafeAlias; /* minutes to wait until @:@ in alias file */ 576 EXTERN time_t TimeOut; /* time until timeout */ 577 EXTERN FILE *InChannel; /* input connection */ 578 EXTERN FILE *OutChannel; /* output connection */ 579 EXTERN uid_t RealUid; /* when Daemon, real uid of caller */ 580 EXTERN gid_t RealGid; /* when Daemon, real gid of caller */ 581 EXTERN uid_t DefUid; /* default uid to run as */ 582 EXTERN gid_t DefGid; /* default gid to run as */ 583 EXTERN char *DefUser; /* default user to run as (from DefUid) */ 584 EXTERN int OldUmask; /* umask when sendmail starts up */ 585 EXTERN int Errors; /* set if errors (local to single pass) */ 586 EXTERN int ExitStat; /* exit status code */ 587 EXTERN int AliasLevel; /* depth of aliasing */ 588 EXTERN int MotherPid; /* proc id of parent process */ 589 EXTERN int LineNumber; /* line number in current input */ 590 EXTERN time_t ReadTimeout; /* timeout on reads */ 591 EXTERN int LogLevel; /* level of logging to perform */ 592 EXTERN int FileMode; /* mode on files */ 593 EXTERN int QueueLA; /* load average starting forced queueing */ 594 EXTERN int RefuseLA; /* load average refusing connections are */ 595 EXTERN int CurrentLA; /* current load average */ 596 EXTERN long QueueFactor; /* slope of queue function */ 597 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 598 EXTERN char *AliasFile; /* location of alias file */ 599 EXTERN char *HelpFile; /* location of SMTP help file */ 600 EXTERN char *ErrMsgFile; /* file to prepend to all error messages */ 601 EXTERN char *StatFile; /* location of statistics summary */ 602 EXTERN char *QueueDir; /* location of queue directory */ 603 EXTERN char *FileName; /* name to print on error messages */ 604 EXTERN char *SmtpPhase; /* current phase in SMTP processing */ 605 EXTERN char *MyHostName; /* name of this host for SMTP messages */ 606 EXTERN char *RealHostName; /* name of host we are talking to */ 607 EXTERN struct sockaddr_in RealHostAddr;/* address of host we are talking to */ 608 EXTERN char *CurHostName; /* current host we are dealing with */ 609 EXTERN jmp_buf TopFrame; /* branch-to-top-of-loop-on-error frame */ 610 EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ 611 EXTERN bool LogUsrErrs; /* syslog user errors (e.g., SMTP RCPT cmd) */ 612 extern char *ConfFile; /* location of configuration file [conf.c] */ 613 extern char *FreezeFile; /* location of frozen memory image [conf.c] */ 614 extern char Arpa_Info[]; /* the reply code for Arpanet info [conf.c] */ 615 extern ADDRESS NullAddress; /* a null (template) address [main.c] */ 616 EXTERN char SpaceSub; /* substitution for <lwsp> */ 617 EXTERN long WkClassFact; /* multiplier for message class -> priority */ 618 EXTERN long WkRecipFact; /* multiplier for # of recipients -> priority */ 619 EXTERN long WkTimeFact; /* priority offset each time this job is run */ 620 EXTERN char *PostMasterCopy; /* address to get errs cc's */ 621 EXTERN char *TrustedUsers[MAXTRUST+1]; /* list of trusted users */ 622 EXTERN int CheckpointInterval; /* queue file checkpoint interval */ 623 EXTERN char *UdbSpec; /* user database source spec [udbexpand.c] */ 624 EXTERN int MaxHopCount; /* number of hops until we give an error */ 625 EXTERN int ConfigLevel; /* config file level -- what does .cf expect? */ 626 EXTERN char *TimeZoneSpec; /* override time zone specification */ 627 EXTERN bool MatchGecos; /* look for user names in gecos field */ 628 EXTERN int MaxMciCache; /* maximum entries in MCI cache */ 629 EXTERN time_t MciCacheTimeout; /* maximum idle time on connections */ 630 EXTERN char *ForwardPath; /* path to search for .forward files */ 631 /* 632 ** Trace information 633 */ 634 635 /* trace vector and macros for debugging flags */ 636 EXTERN u_char tTdvect[100]; 637 # define tTd(flag, level) (tTdvect[flag] >= level) 638 # define tTdlevel(flag) (tTdvect[flag]) 639 /* 640 ** Miscellaneous information. 641 */ 642 643 644 645 /* 646 ** Some in-line functions 647 */ 648 649 /* set exit status */ 650 #define setstat(s) { \ 651 if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ 652 ExitStat = s; \ 653 } 654 655 /* make a copy of a string */ 656 #define newstr(s) strcpy(xalloc(strlen(s) + 1), s) 657 658 #define STRUCTCOPY(s, d) d = s 659 660 661 /* 662 ** Declarations of useful functions 663 */ 664 665 extern ADDRESS *parseaddr(); 666 extern char *xalloc(); 667 extern bool sameaddr(); 668 extern FILE *dfopen(); 669 extern EVENT *setevent(); 670 extern char *sfgets(); 671 extern char *queuename(); 672 extern time_t curtime(); 673