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1.1 ! root 1: /* ! 2: ** SENDMAIL.H -- Global definitions for sendmail. ! 3: */ ! 4: ! 5: ! 6: ! 7: # ifdef _DEFINE ! 8: # define EXTERN ! 9: # ifndef lint ! 10: static char SmailSccsId[] = "@(#)sendmail.h 4.2 8/28/83"; ! 11: # endif lint ! 12: # else _DEFINE ! 13: # define EXTERN extern ! 14: # endif _DEFINE ! 15: ! 16: # include <stdio.h> ! 17: # include <ctype.h> ! 18: # include <setjmp.h> ! 19: # include "conf.h" ! 20: # include "useful.h" ! 21: ! 22: # ifdef LOG ! 23: # include <syslog.h> ! 24: # endif LOG ! 25: ! 26: ! 27: /* ! 28: ** Data structure for bit maps. ! 29: ** ! 30: ** Each bit in this map can be referenced by an ascii character. ! 31: ** This is 128 possible bits, or 12 8-bit bytes. ! 32: */ ! 33: ! 34: #define BITMAPBYTES 16 /* number of bytes in a bit map */ ! 35: #define BYTEBITS 8 /* number of bits in a byte */ ! 36: ! 37: /* internal macros */ ! 38: #define _BITWORD(bit) (bit / (BYTEBITS * sizeof (int))) ! 39: #define _BITBIT(bit) (1 << (bit % (BYTEBITS * sizeof (int)))) ! 40: ! 41: typedef int BITMAP[BITMAPBYTES / sizeof (int)]; ! 42: ! 43: /* test bit number N */ ! 44: #define bitnset(bit, map) ((map)[_BITWORD(bit)] & _BITBIT(bit)) ! 45: ! 46: /* set bit number N */ ! 47: #define setbitn(bit, map) (map)[_BITWORD(bit)] |= _BITBIT(bit) ! 48: ! 49: /* clear bit number N */ ! 50: #define clrbitn(bit, map) (map)[_BITWORD(bit)] &= ~_BITBIT(bit) ! 51: ! 52: /* clear an entire bit map */ ! 53: #define clrbitmap(map) bzero((char *) map, BITMAPBYTES) ! 54: /* ! 55: ** Address structure. ! 56: ** Addresses are stored internally in this structure. ! 57: */ ! 58: ! 59: struct address ! 60: { ! 61: char *q_paddr; /* the printname for the address */ ! 62: char *q_user; /* user name */ ! 63: char *q_host; /* host name */ ! 64: struct mailer *q_mailer; /* mailer to use */ ! 65: u_short q_flags; /* status flags, see below */ ! 66: short q_uid; /* user-id of receiver (if known) */ ! 67: short q_gid; /* group-id of receiver (if known) */ ! 68: char *q_home; /* home dir (local mailer only) */ ! 69: char *q_fullname; /* full name if known */ ! 70: struct address *q_next; /* chain */ ! 71: struct address *q_alias; /* address this results from */ ! 72: struct address *q_tchain; /* temporary use chain */ ! 73: time_t q_timeout; /* timeout for this address */ ! 74: }; ! 75: ! 76: typedef struct address ADDRESS; ! 77: ! 78: # define QDONTSEND 000001 /* don't send to this address */ ! 79: # define QBADADDR 000002 /* this address is verified bad */ ! 80: # define QGOODUID 000004 /* the q_uid q_gid fields are good */ ! 81: # define QPRIMARY 000010 /* set from argv */ ! 82: # define QQUEUEUP 000020 /* queue for later transmission */ ! 83: /* ! 84: ** Mailer definition structure. ! 85: ** Every mailer known to the system is declared in this ! 86: ** structure. It defines the pathname of the mailer, some ! 87: ** flags associated with it, and the argument vector to ! 88: ** pass to it. The flags are defined in conf.c ! 89: ** ! 90: ** The argument vector is expanded before actual use. All ! 91: ** words except the first are passed through the macro ! 92: ** processor. ! 93: */ ! 94: ! 95: struct mailer ! 96: { ! 97: char *m_name; /* symbolic name of this mailer */ ! 98: char *m_mailer; /* pathname of the mailer to use */ ! 99: BITMAP m_flags; /* status flags, see below */ ! 100: short m_mno; /* mailer number internally */ ! 101: char **m_argv; /* template argument vector */ ! 102: short m_s_rwset; /* rewriting set for sender addresses */ ! 103: short m_r_rwset; /* rewriting set for recipient addresses */ ! 104: char *m_eol; /* end of line string */ ! 105: long m_maxsize; /* size limit on message to this mailer */ ! 106: }; ! 107: ! 108: typedef struct mailer MAILER; ! 109: ! 110: /* bits for m_flags */ ! 111: # define M_FOPT 'f' /* mailer takes picky -f flag */ ! 112: # define M_ROPT 'r' /* mailer takes picky -r flag */ ! 113: # define M_RESTR 'S' /* must be daemon to execute */ ! 114: # define M_NHDR 'n' /* don't insert From line */ ! 115: # define M_LOCAL 'l' /* delivery is to this host */ ! 116: # define M_STRIPQ 's' /* strip quote chars from user/host */ ! 117: # define M_MUSER 'm' /* can handle multiple users at once */ ! 118: # define M_CANONICAL 'C' /* make addresses canonical "u@dom" */ ! 119: # define M_USR_UPPER 'u' /* preserve user case distinction */ ! 120: # define M_HST_UPPER 'h' /* preserve host case distinction */ ! 121: # define M_UGLYUUCP 'U' /* this wants an ugly UUCP from line */ ! 122: # define M_EXPENSIVE 'e' /* it costs to use this mailer.... */ ! 123: # define M_LIMITS 'L' /* must enforce SMTP line limits */ ! 124: # define M_INTERNAL 'I' /* SMTP to another sendmail site */ ! 125: # define M_FROMPATH 'p' /* use reverse-path in MAIL FROM: */ ! 126: # define M_XDOT 'X' /* use hidden-dot algorithm */ ! 127: ! 128: EXTERN MAILER *Mailer[MAXMAILERS+1]; ! 129: ! 130: EXTERN MAILER *LocalMailer; /* ptr to local mailer */ ! 131: EXTERN MAILER *ProgMailer; /* ptr to program mailer */ ! 132: /* ! 133: ** Header structure. ! 134: ** This structure is used internally to store header items. ! 135: */ ! 136: ! 137: struct header ! 138: { ! 139: char *h_field; /* the name of the field */ ! 140: char *h_value; /* the value of that field */ ! 141: struct header *h_link; /* the next header */ ! 142: u_short h_flags; /* status bits, see below */ ! 143: BITMAP h_mflags; /* m_flags bits needed */ ! 144: }; ! 145: ! 146: typedef struct header HDR; ! 147: ! 148: /* ! 149: ** Header information structure. ! 150: ** Defined in conf.c, this struct declares the header fields ! 151: ** that have some magic meaning. ! 152: */ ! 153: ! 154: struct hdrinfo ! 155: { ! 156: char *hi_field; /* the name of the field */ ! 157: u_short hi_flags; /* status bits, see below */ ! 158: }; ! 159: ! 160: extern struct hdrinfo HdrInfo[]; ! 161: ! 162: /* bits for h_flags and hi_flags */ ! 163: # define H_EOH 00001 /* this field terminates header */ ! 164: # define H_RCPT 00002 /* contains recipient addresses */ ! 165: # define H_DEFAULT 00004 /* if another value is found, drop this */ ! 166: # define H_RESENT 00010 /* this address is a "Resent-..." address */ ! 167: # define H_CHECK 00020 /* check h_mflags against m_flags */ ! 168: # define H_ACHECK 00040 /* ditto, but always (not just default) */ ! 169: # define H_FORCE 00100 /* force this field, even if default */ ! 170: # define H_TRACE 00200 /* this field contains trace information */ ! 171: # define H_FROM 00400 /* this is a from-type field */ ! 172: /* ! 173: ** Envelope structure. ! 174: ** This structure defines the message itself. There is usually ! 175: ** only one of these -- for the message that we originally read ! 176: ** and which is our primary interest -- but other envelopes can ! 177: ** be generated during processing. For example, error messages ! 178: ** will have their own envelope. ! 179: */ ! 180: ! 181: struct envelope ! 182: { ! 183: HDR *e_header; /* head of header list */ ! 184: long e_msgpriority; /* adjusted priority of this message */ ! 185: time_t e_ctime; /* time message appeared in the queue */ ! 186: char *e_to; /* the target person */ ! 187: char *e_receiptto; /* return receipt address */ ! 188: ADDRESS e_from; /* the person it is from */ ! 189: char **e_fromdomain; /* the domain part of the sender */ ! 190: ADDRESS *e_sendqueue; /* list of message recipients */ ! 191: ADDRESS *e_errorqueue; /* the queue for error responses */ ! 192: long e_msgsize; /* size of the message in bytes */ ! 193: short e_class; /* msg class (priority, junk, etc.) */ ! 194: short e_flags; /* flags, see below */ ! 195: short e_hopcount; /* number of times processed */ ! 196: int (*e_puthdr)(); /* function to put header of message */ ! 197: int (*e_putbody)(); /* function to put body of message */ ! 198: struct envelope *e_parent; /* the message this one encloses */ ! 199: struct envelope *e_sibling; /* the next envelope of interest */ ! 200: char *e_df; /* location of temp file */ ! 201: FILE *e_dfp; /* temporary file */ ! 202: char *e_id; /* code for this entry in queue */ ! 203: FILE *e_xfp; /* transcript file */ ! 204: char *e_message; /* error message */ ! 205: char *e_macro[128]; /* macro definitions */ ! 206: }; ! 207: ! 208: typedef struct envelope ENVELOPE; ! 209: ! 210: /* values for e_flags */ ! 211: #define EF_OLDSTYLE 000001 /* use spaces (not commas) in hdrs */ ! 212: #define EF_INQUEUE 000002 /* this message is fully queued */ ! 213: #define EF_TIMEOUT 000004 /* this message is too old */ ! 214: #define EF_CLRQUEUE 000010 /* disk copy is no longer needed */ ! 215: #define EF_SENDRECEIPT 000020 /* send a return receipt */ ! 216: #define EF_FATALERRS 000040 /* fatal errors occured */ ! 217: #define EF_KEEPQUEUE 000100 /* keep queue files always */ ! 218: #define EF_RESPONSE 000200 /* this is an error or return receipt */ ! 219: #define EF_RESENT 000400 /* this message is being forwarded */ ! 220: ! 221: EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ ! 222: /* ! 223: ** Message priorities. ! 224: ** Priorities > 0 should be preemptive. ! 225: ** ! 226: ** CurEnv->e_msgpriority is the number of bytes in the message adjusted ! 227: ** by the message priority and the amount of time the message ! 228: ** has been sitting around. Each priority point is worth ! 229: ** WKPRIFACT bytes of message, and each time we reprocess a ! 230: ** message the size gets reduced by WKTIMEFACT. ! 231: ** ! 232: ** WKTIMEFACT is negative since jobs that fail once have a high ! 233: ** probability of failing again. Making it negative tends to force ! 234: ** them to the back rather than the front of the queue, where they ! 235: ** only clog things. Thanks go to Jay Lepreau at Utah for pointing ! 236: ** out the error in my thinking. ! 237: ** ! 238: ** The "class" is this number, unadjusted by the age or size of ! 239: ** this message. Classes with negative representations will have ! 240: ** error messages thrown away if they are not local. ! 241: */ ! 242: ! 243: struct priority ! 244: { ! 245: char *pri_name; /* external name of priority */ ! 246: int pri_val; /* internal value for same */ ! 247: }; ! 248: ! 249: EXTERN struct priority Priorities[MAXPRIORITIES]; ! 250: EXTERN int NumPriorities; /* pointer into Priorities */ ! 251: ! 252: # define WKPRIFACT 1800 /* bytes each pri point is worth */ ! 253: # define WKTIMEFACT (-600) /* bytes each reprocessing is worth */ ! 254: /* ! 255: ** Rewrite rules. ! 256: */ ! 257: ! 258: struct rewrite ! 259: { ! 260: char **r_lhs; /* pattern match */ ! 261: char **r_rhs; /* substitution value */ ! 262: struct rewrite *r_next;/* next in chain */ ! 263: }; ! 264: ! 265: EXTERN struct rewrite *RewriteRules[MAXRWSETS]; ! 266: ! 267: /* ! 268: ** Special characters in rewriting rules. ! 269: ** These are used internally only. ! 270: ** The COND* rules are actually used in macros rather than in ! 271: ** rewriting rules, but are given here because they ! 272: ** cannot conflict. ! 273: */ ! 274: ! 275: /* left hand side items */ ! 276: # define MATCHZANY '\020' /* match zero or more tokens */ ! 277: # define MATCHANY '\021' /* match one or more tokens */ ! 278: # define MATCHONE '\022' /* match exactly one token */ ! 279: # define MATCHCLASS '\023' /* match one token in a class */ ! 280: # define MATCHNCLASS '\034' /* match anything not in class */ ! 281: # define MATCHREPL '\024' /* replacement on RHS for above */ ! 282: ! 283: /* right hand side items */ ! 284: # define CANONNET '\025' /* canonical net, next token */ ! 285: # define CANONHOST '\026' /* canonical host, next token */ ! 286: # define CANONUSER '\027' /* canonical user, next N tokens */ ! 287: # define CALLSUBR '\030' /* call another rewriting set */ ! 288: ! 289: /* conditionals in macros */ ! 290: # define CONDIF '\031' /* conditional if-then */ ! 291: # define CONDELSE '\032' /* conditional else */ ! 292: # define CONDFI '\033' /* conditional fi */ ! 293: /* ! 294: ** Symbol table definitions ! 295: */ ! 296: ! 297: struct symtab ! 298: { ! 299: char *s_name; /* name to be entered */ ! 300: char s_type; /* general type (see below) */ ! 301: struct symtab *s_next; /* pointer to next in chain */ ! 302: union ! 303: { ! 304: BITMAP sv_class; /* bit-map of word classes */ ! 305: ADDRESS *sv_addr; /* pointer to address header */ ! 306: MAILER *sv_mailer; /* pointer to mailer */ ! 307: char *sv_alias; /* alias */ ! 308: } s_value; ! 309: }; ! 310: ! 311: typedef struct symtab STAB; ! 312: ! 313: /* symbol types */ ! 314: # define ST_UNDEF 0 /* undefined type */ ! 315: # define ST_CLASS 1 /* class map */ ! 316: # define ST_ADDRESS 2 /* an address in parsed format */ ! 317: # define ST_MAILER 3 /* a mailer header */ ! 318: # define ST_ALIAS 4 /* an alias */ ! 319: ! 320: # define s_class s_value.sv_class ! 321: # define s_address s_value.sv_addr ! 322: # define s_mailer s_value.sv_mailer ! 323: # define s_alias s_value.sv_alias ! 324: ! 325: extern STAB *stab(); ! 326: ! 327: /* opcodes to stab */ ! 328: # define ST_FIND 0 /* find entry */ ! 329: # define ST_ENTER 1 /* enter if not there */ ! 330: /* ! 331: ** STRUCT EVENT -- event queue. ! 332: ** ! 333: ** Maintained in sorted order. ! 334: ** ! 335: ** We store the pid of the process that set this event to insure ! 336: ** that when we fork we will not take events intended for the parent. ! 337: */ ! 338: ! 339: struct event ! 340: { ! 341: time_t ev_time; /* time of the function call */ ! 342: int (*ev_func)(); /* function to call */ ! 343: int ev_arg; /* argument to ev_func */ ! 344: int ev_pid; /* pid that set this event */ ! 345: struct event *ev_link; /* link to next item */ ! 346: }; ! 347: ! 348: typedef struct event EVENT; ! 349: ! 350: EXTERN EVENT *EventQueue; /* head of event queue */ ! 351: /* ! 352: ** Operation, send, and error modes ! 353: ** ! 354: ** The operation mode describes the basic operation of sendmail. ! 355: ** This can be set from the command line, and is "send mail" by ! 356: ** default. ! 357: ** ! 358: ** The send mode tells how to send mail. It can be set in the ! 359: ** configuration file. It's setting determines how quickly the ! 360: ** mail will be delivered versus the load on your system. If the ! 361: ** -v (verbose) flag is given, it will be forced to SM_DELIVER ! 362: ** mode. ! 363: ** ! 364: ** The error mode tells how to return errors. ! 365: */ ! 366: ! 367: EXTERN char OpMode; /* operation mode, see below */ ! 368: ! 369: #define MD_DELIVER 'm' /* be a mail sender */ ! 370: #define MD_ARPAFTP 'a' /* old-style arpanet protocols */ ! 371: #define MD_SMTP 's' /* run SMTP on standard input */ ! 372: #define MD_DAEMON 'd' /* run as a daemon */ ! 373: #define MD_VERIFY 'v' /* verify: don't collect or deliver */ ! 374: #define MD_TEST 't' /* test mode: resolve addrs only */ ! 375: #define MD_INITALIAS 'i' /* initialize alias database */ ! 376: #define MD_PRINT 'p' /* print the queue */ ! 377: #define MD_FREEZE 'z' /* freeze the configuration file */ ! 378: ! 379: ! 380: EXTERN char SendMode; /* send mode, see below */ ! 381: ! 382: #define SM_DELIVER 'i' /* interactive delivery */ ! 383: #define SM_QUICKD 'j' /* deliver w/o queueing */ ! 384: #define SM_FORK 'b' /* deliver in background */ ! 385: #define SM_QUEUE 'q' /* queue, don't deliver */ ! 386: #define SM_VERIFY 'v' /* verify only (used internally) */ ! 387: ! 388: /* used only as a parameter to sendall */ ! 389: #define SM_DEFAULT '\0' /* unspecified, use SendMode */ ! 390: ! 391: ! 392: EXTERN char ErrorMode; /* error mode, see below */ ! 393: ! 394: #define EM_PRINT 'p' /* print errors */ ! 395: #define EM_MAIL 'm' /* mail back errors */ ! 396: #define EM_WRITE 'w' /* write back errors */ ! 397: #define EM_BERKNET 'e' /* special berknet processing */ ! 398: #define EM_QUIET 'q' /* don't print messages (stat only) */ ! 399: /* ! 400: ** Global variables. ! 401: */ ! 402: ! 403: EXTERN bool FromFlag; /* if set, "From" person is explicit */ ! 404: EXTERN bool NoAlias; /* if set, don't do any aliasing */ ! 405: EXTERN bool ForceMail; /* if set, mail even if already got a copy */ ! 406: EXTERN bool MeToo; /* send to the sender also */ ! 407: EXTERN bool IgnrDot; /* don't let dot end messages */ ! 408: EXTERN bool SaveFrom; /* save leading "From" lines */ ! 409: EXTERN bool Verbose; /* set if blow-by-blow desired */ ! 410: EXTERN bool GrabTo; /* if set, get recipients from msg */ ! 411: EXTERN bool NoReturn; /* don't return letter to sender */ ! 412: EXTERN bool SuprErrs; /* set if we are suppressing errors */ ! 413: EXTERN bool QueueRun; /* currently running message from the queue */ ! 414: EXTERN bool HoldErrs; /* only output errors to transcript */ ! 415: EXTERN bool NoConnect; /* don't connect to non-local mailers */ ! 416: EXTERN bool SuperSafe; /* be extra careful, even if expensive */ ! 417: EXTERN bool SafeAlias; /* alias file must have "@:@" to be complete */ ! 418: EXTERN bool AutoRebuild; /* auto-rebuild the alias database as needed */ ! 419: EXTERN time_t TimeOut; /* time until timeout */ ! 420: EXTERN FILE *InChannel; /* input connection */ ! 421: EXTERN FILE *OutChannel; /* output connection */ ! 422: EXTERN int RealUid; /* when Daemon, real uid of caller */ ! 423: EXTERN int RealGid; /* when Daemon, real gid of caller */ ! 424: EXTERN int DefUid; /* default uid to run as */ ! 425: EXTERN int DefGid; /* default gid to run as */ ! 426: EXTERN int OldUmask; /* umask when sendmail starts up */ ! 427: EXTERN int Errors; /* set if errors (local to single pass) */ ! 428: EXTERN int ExitStat; /* exit status code */ ! 429: EXTERN int AliasLevel; /* depth of aliasing */ ! 430: EXTERN int MotherPid; /* proc id of parent process */ ! 431: EXTERN int LineNumber; /* line number in current input */ ! 432: EXTERN int ReadTimeout; /* timeout on reads */ ! 433: EXTERN int LogLevel; /* level of logging to perform */ ! 434: EXTERN int FileMode; /* mode on files */ ! 435: EXTERN time_t QueueIntvl; /* intervals between running the queue */ ! 436: EXTERN char *HostName; /* name of this host for SMTP messages */ ! 437: EXTERN char *AliasFile; /* location of alias file */ ! 438: EXTERN char *HelpFile; /* location of SMTP help file */ ! 439: EXTERN char *StatFile; /* location of statistics summary */ ! 440: EXTERN char *QueueDir; /* location of queue directory */ ! 441: EXTERN char *FileName; /* name to print on error messages */ ! 442: EXTERN char *TrustedUsers[MAXTRUST+1]; /* list of trusted users */ ! 443: EXTERN jmp_buf TopFrame; /* branch-to-top-of-loop-on-error frame */ ! 444: EXTERN bool QuickAbort; /* .... but only if we want a quick abort */ ! 445: extern char *ConfFile; /* location of configuration file [conf.c] */ ! 446: extern char *FreezeFile; /* location of frozen memory image [conf.c] */ ! 447: extern char Arpa_Info[]; /* the reply code for Arpanet info [conf.c] */ ! 448: extern char SpaceSub; /* substitution for <lwsp> [conf.c] */ ! 449: /* ! 450: ** Trace information ! 451: */ ! 452: ! 453: /* trace vector and macros for debugging flags */ ! 454: EXTERN u_char tTdvect[100]; ! 455: # define tTd(flag, level) (tTdvect[flag] >= level) ! 456: # define tTdlevel(flag) (tTdvect[flag]) ! 457: /* ! 458: ** Miscellaneous information. ! 459: */ ! 460: ! 461: # include <sysexits.h> ! 462: ! 463: ! 464: /* ! 465: ** Some in-line functions ! 466: */ ! 467: ! 468: /* set exit status */ ! 469: #define setstat(s) { \ ! 470: if (ExitStat == EX_OK || ExitStat == EX_TEMPFAIL) \ ! 471: ExitStat = s; \ ! 472: } ! 473: ! 474: /* make a copy of a string */ ! 475: #define newstr(s) strcpy(xalloc(strlen(s) + 1), s) ! 476: ! 477: ! 478: /* ! 479: ** Declarations of useful functions ! 480: */ ! 481: ! 482: extern ADDRESS *parseaddr(); ! 483: extern char *xalloc(); ! 484: extern bool sameaddr(); ! 485: extern FILE *dfopen(); ! 486: extern EVENT *setevent(); ! 487: extern char *sfgets(); ! 488: extern char *queuename(); ! 489: extern time_t curtime();
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