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 3.71 05/31/82"; 11 # endif lint 12 # else _DEFINE 13 # define EXTERN extern 14 # endif _DEFINE 15 16 # include <stdio.h> 17 # include <ctype.h> 18 # include "useful.h" 19 20 /* 21 ** Configuration constants. 22 ** There shouldn't be much need to change these.... 23 */ 24 25 # define MAXLINE 256 /* max line length */ 26 # define MAXNAME 128 /* max length of a name */ 27 # define MAXFIELD 2500 /* max total length of a hdr field */ 28 # define MAXPV 40 /* max # of parms to mailers */ 29 # define MAXHOP 30 /* max value of HopCount */ 30 # define MAXATOM 30 /* max atoms per address */ 31 # define MAXMAILERS 10 /* maximum mailers known to system */ 32 # define SPACESUB ('.'|0200) /* substitution for <lwsp> */ 33 34 extern char Arpa_Info[]; /* the message number for Arpanet info */ 35 /* 36 ** Address structure. 37 ** Addresses are stored internally in this structure. 38 */ 39 40 struct address 41 { 42 char *q_paddr; /* the printname for the address */ 43 char *q_user; /* user name */ 44 char *q_host; /* host name */ 45 struct mailer *q_mailer; /* mailer to use */ 46 short q_rmailer; /* real mailer (before mapping) */ 47 u_short q_flags; /* status flags, see below */ 48 short q_uid; /* user-id of receiver (if known) */ 49 short q_gid; /* group-id of receiver (if known) */ 50 char *q_home; /* home dir (local mailer only) */ 51 char *q_fullname; /* full name if known */ 52 struct address *q_next; /* chain */ 53 struct address *q_alias; /* address this results from */ 54 struct address *q_tchain; /* temporary use chain */ 55 time_t q_timeout; /* timeout for this address */ 56 }; 57 58 typedef struct address ADDRESS; 59 60 # define QDONTSEND 000001 /* don't send to this address */ 61 # define QBADADDR 000002 /* this address is verified bad */ 62 # define QGOODUID 000004 /* the q_uid q_gid fields are good */ 63 # define QPRIMARY 000010 /* set from argv */ 64 # define QQUEUEUP 000020 /* queue for later transmission */ 65 /* 66 ** Mailer definition structure. 67 ** Every mailer known to the system is declared in this 68 ** structure. It defines the pathname of the mailer, some 69 ** flags associated with it, and the argument vector to 70 ** pass to it. The flags are defined in conf.c 71 ** 72 ** The argument vector is expanded before actual use. All 73 ** words except the first are passed through the macro 74 ** processor. 75 */ 76 77 struct mailer 78 { 79 char *m_name; /* symbolic name of this mailer */ 80 char *m_mailer; /* pathname of the mailer to use */ 81 u_long m_flags; /* status flags, see below */ 82 short m_badstat; /* the status code to use on unknown error */ 83 short m_mno; /* mailer number internally */ 84 char *m_from; /* pattern for From: header */ 85 char **m_argv; /* template argument vector */ 86 }; 87 88 typedef struct mailer MAILER; 89 90 /* bits for m_flags */ 91 # define M_FOPT 000000001L /* mailer takes picky -f flag */ 92 # define M_ROPT 000000002L /* mailer takes picky -r flag */ 93 # define M_QUIET 000000004L /* don't print error on bad status */ 94 # define M_RESTR 000000010L /* must be daemon to execute */ 95 # define M_NHDR 000000020L /* don't insert From line */ 96 # define M_LOCAL 000000040L /* delivery is to this host */ 97 # define M_STRIPQ 000000100L /* strip quote chars from user/host */ 98 # define M_MUSER 000000200L /* can handle multiple users at once */ 99 # define M_NEEDFROM 000000400L /* need arpa-style From: line */ 100 # define M_NEEDDATE 000001000L /* need arpa-style Date: line */ 101 # define M_MSGID 000002000L /* need Message-Id: field */ 102 # define M_RELRCPT 000004000L /* make recipient addresses relative */ 103 # define M_USR_UPPER 000010000L /* preserve user case distinction */ 104 # define M_HST_UPPER 000020000L /* preserve host case distinction */ 105 # define M_FULLNAME 000040000L /* want Full-Name field */ 106 # define M_UGLYUUCP 000100000L /* this wants an ugly UUCP from line */ 107 # define M_EXPENSIVE 000200000L /* it costs to use this mailer.... */ 108 # define M_FULLSMTP 000400000L /* must run full SMTP, inc. limits */ 109 110 # define M_ARPAFMT (M_NEEDDATE|M_NEEDFROM|M_MSGID) 111 112 EXTERN MAILER *Mailer[MAXMAILERS+1]; 113 114 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 115 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 116 /* 117 ** Header structure. 118 ** This structure is used internally to store header items. 119 */ 120 121 struct header 122 { 123 char *h_field; /* the name of the field */ 124 char *h_value; /* the value of that field */ 125 struct header *h_link; /* the next header */ 126 u_short h_flags; /* status bits, see below */ 127 u_long h_mflags; /* m_flags bits needed */ 128 }; 129 130 typedef struct header HDR; 131 132 /* 133 ** Header information structure. 134 ** Defined in conf.c, this struct declares the header fields 135 ** that have some magic meaning. 136 */ 137 138 struct hdrinfo 139 { 140 char *hi_field; /* the name of the field */ 141 u_short hi_flags; /* status bits, see below */ 142 u_short hi_mflags; /* m_flags needed for this field */ 143 }; 144 145 extern struct hdrinfo HdrInfo[]; 146 147 /* bits for h_flags and hi_flags */ 148 # define H_EOH 00001 /* this field terminates header */ 149 # define H_RCPT 00002 /* contains recipient addresses */ 150 # define H_DEFAULT 00004 /* if another value is found, drop this */ 151 # define H_USED 00010 /* indicates that this has been output */ 152 # define H_CHECK 00020 /* check h_mflags against m_flags */ 153 # define H_ACHECK 00040 /* ditto, but always (not just default) */ 154 # define H_FORCE 00100 /* force this field, even if default */ 155 # define H_ADDR 00200 /* this field contains addresses */ 156 /* 157 ** Envelope structure. 158 ** This structure defines the message itself. There is usually 159 ** only one of these -- for the message that we originally read 160 ** and which is our primary interest -- but other envelopes can 161 ** be generated during processing. For example, error messages 162 ** will have their own envelope. 163 */ 164 165 struct envelope 166 { 167 HDR *e_header; /* head of header list */ 168 long e_msgpriority; /* adjusted priority of this message */ 169 bool e_queueup; /* queue this message */ 170 bool e_oldstyle; /* use spaces (not commas) in hdrs */ 171 bool e_retreceipt; /* give a return receipt */ 172 bool e_sendreceipt; /* actually send a receipt back */ 173 char *e_origfrom; /* the From: line first read */ 174 char *e_to; /* the target person */ 175 ADDRESS e_from; /* the person it is from */ 176 ADDRESS *e_sendqueue; /* list of message recipients */ 177 long e_msgsize; /* size of the message in bytes */ 178 short e_class; /* msg class (priority, junk, etc.) */ 179 int (*e_puthdr)(); /* function to put header of message */ 180 int (*e_putbody)(); /* function to put body of message */ 181 struct envelope *e_parent; /* the message this one encloses */ 182 char *e_df; /* location of temp file */ 183 char *e_macro[128]; /* macro definitions */ 184 }; 185 186 typedef struct envelope ENVELOPE; 187 188 EXTERN ENVELOPE *CurEnv; /* envelope currently being processed */ 189 /* 190 ** Work queue. 191 */ 192 193 struct work 194 { 195 char *w_name; /* name of control file */ 196 long w_pri; /* priority of message, see below */ 197 struct work *w_next; /* next in queue */ 198 }; 199 200 typedef struct work WORK; 201 202 EXTERN WORK *WorkQ; /* queue of things to be done */ 203 204 205 /* 206 ** Message priorities. 207 ** Priorities > 0 should be preemptive. 208 ** 209 ** CurEnv->e_msgpriority is the number of bytes in the message adjusted 210 ** by the message priority and the amount of time the message 211 ** has been sitting around. Each priority point is worth 212 ** WKPRIFACT bytes of message, and each time we reprocess a 213 ** message the size gets reduced by WKTIMEFACT. 214 ** 215 ** The "class" is this number, unadjusted by the age or size of 216 ** this message. Classes with negative representations will have 217 ** error messages thrown away if they are not local. 218 */ 219 220 # define PRI_ALERT 50 221 # define PRI_QUICK 30 222 # define PRI_FIRSTCL 10 223 # define PRI_NORMAL 0 224 # define PRI_SECONDCL -10 225 # define PRI_THIRDCL -40 226 # define PRI_JUNK -100 227 228 # define WKPRIFACT 1800 /* bytes each pri point is worth */ 229 # define WKTIMEFACT 400 /* bytes each time unit is worth */ 230 /* 231 ** Rewrite rules. 232 */ 233 234 struct rewrite 235 { 236 char **r_lhs; /* pattern match */ 237 char **r_rhs; /* substitution value */ 238 struct rewrite *r_next;/* next in chain */ 239 }; 240 241 extern struct rewrite *RewriteRules[]; 242 243 # define MATCHANY '\020' /* match one or more tokens */ 244 # define MATCHONE '\021' /* match exactly one token */ 245 # define MATCHCLASS '\022' /* match one token in a class */ 246 # define MATCHREPL '\023' /* replacement on RHS for above */ 247 248 # define CANONNET '\025' /* canonical net, next token */ 249 # define CANONHOST '\026' /* canonical host, next token */ 250 # define CANONUSER '\027' /* canonical user, next N tokens */ 251 252 # define CONDIF '\030' /* conditional if-then */ 253 # define CONDELSE '\031' /* conditional else */ 254 # define CONDFI '\032' /* conditional fi */ 255 /* 256 ** Symbol table definitions 257 */ 258 259 struct symtab 260 { 261 char *s_name; /* name to be entered */ 262 char s_type; /* general type (see below) */ 263 struct symtab *s_next; /* pointer to next in chain */ 264 union 265 { 266 long sv_class; /* bit-map of word classes */ 267 ADDRESS *sv_addr; /* pointer to address header */ 268 MAILER *sv_mailer; /* pointer to mailer */ 269 char *sv_alias; /* alias */ 270 } s_value; 271 }; 272 273 typedef struct symtab STAB; 274 275 /* symbol types */ 276 # define ST_UNDEF 0 /* undefined type */ 277 # define ST_CLASS 1 /* class map */ 278 # define ST_ADDRESS 2 /* an address in parsed format */ 279 # define ST_MAILER 3 /* a mailer header */ 280 # define ST_ALIAS 4 /* an alias */ 281 282 # define s_class s_value.sv_class 283 # define s_address s_value.sv_addr 284 # define s_mailer s_value.sv_mailer 285 # define s_alias s_value.sv_alias 286 287 extern STAB *stab(); 288 289 /* opcodes to stab */ 290 # define ST_FIND 0 /* find entry */ 291 # define ST_ENTER 1 /* enter if not there */ 292 /* 293 ** Statistics structure. 294 */ 295 296 struct statistics 297 { 298 time_t stat_itime; /* file initialization time */ 299 short stat_size; /* size of this structure */ 300 long stat_nf[MAXMAILERS]; /* # msgs from each mailer */ 301 long stat_bf[MAXMAILERS]; /* kbytes from each mailer */ 302 long stat_nt[MAXMAILERS]; /* # msgs to each mailer */ 303 long stat_bt[MAXMAILERS]; /* kbytes to each mailer */ 304 }; 305 306 EXTERN struct statistics Stat; 307 extern long kbytes(); /* for _bf, _bt */ 308 /* 309 ** Operation modes 310 ** The default operation mode can be safely changed (except 311 ** that the default cannot be MD_DAEMON). 312 */ 313 314 EXTERN char Mode; /* operation mode, see below */ 315 316 #define MD_DELIVER 'a' /* collect and deliver */ 317 #define MD_FORK 'f' /* verify & fork before delivery */ 318 #define MD_QUEUE 'q' /* collect & queue, don't deliver */ 319 #define MD_DAEMON 'd' /* run as a daemon */ 320 #define MD_VERIFY 'v' /* verify: don't collect or deliver */ 321 322 #define MD_DEFAULT MD_DELIVER /* default operation mode */ 323 /* 324 ** Global variables. 325 */ 326 327 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 328 EXTERN bool MailBack; /* mail back response on error */ 329 EXTERN bool BerkNet; /* called from BerkNet */ 330 EXTERN bool WriteBack; /* write back response on error */ 331 EXTERN bool NoAlias; /* if set, don't do any aliasing */ 332 EXTERN bool ForceMail; /* if set, mail even if already got a copy */ 333 EXTERN bool MeToo; /* send to the sender also */ 334 EXTERN bool IgnrDot; /* don't let dot end messages */ 335 EXTERN bool SaveFrom; /* save leading "From" lines */ 336 EXTERN bool Verbose; /* set if blow-by-blow desired */ 337 EXTERN bool GrabTo; /* if set, get recipients from msg */ 338 EXTERN bool DontSend; /* mark recipients as QDONTSEND */ 339 EXTERN bool NoReturn; /* don't return letter to sender */ 340 EXTERN bool Smtp; /* using SMTP over connection */ 341 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 342 EXTERN bool QueueRun; /* currently running message from the queue */ 343 EXTERN bool HoldErrs; /* only output errors to transcript */ 344 EXTERN bool ArpaMode; /* set if running arpanet protocol */ 345 EXTERN bool NoConnect; /* don't connect to non-local mailers */ 346 EXTERN bool FatalErrors; /* set if fatal errors during processing */ 347 extern time_t TimeOut; /* time until timeout */ 348 EXTERN FILE *InChannel; /* input connection */ 349 EXTERN FILE *OutChannel; /* output connection */ 350 EXTERN FILE *TempFile; /* mail temp file */ 351 EXTERN FILE *Xscript; /* mail transcript file */ 352 EXTERN int RealUid; /* when Daemon, real uid of caller */ 353 EXTERN int RealGid; /* when Daemon, real gid of caller */ 354 extern int DefUid; /* default uid to run as */ 355 extern int DefGid; /* default gid to run as */ 356 EXTERN int OldUmask; /* umask when sendmail starts up */ 357 EXTERN int Debug; /* debugging level */ 358 EXTERN int Errors; /* set if errors (local to single pass) */ 359 EXTERN int ExitStat; /* exit status code */ 360 EXTERN int HopCount; /* hop count */ 361 EXTERN int AliasLevel; /* depth of aliasing */ 362 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 363 EXTERN char *HostName; /* name of this host for SMTP messages */ 364 EXTERN char *Transcript; /* the transcript file name */ 365 extern char *XcriptFile; /* template for Transcript */ 366 extern char *AliasFile; /* location of alias file */ 367 extern char *ConfFile; /* location of configuration file */ 368 extern char *StatFile; /* location of statistics summary */ 369 extern char *QueueDir; /* location of queue directory */ 370 EXTERN time_t CurTime; /* time of this message */ 371 372 373 # include <sysexits.h> 374 375 # define setstat(s) { if (ExitStat == EX_OK) ExitStat = s; } 376 377 378 /* useful functions */ 379 380 extern char *newstr(); 381 extern ADDRESS *parse(); 382 extern char *xalloc(); 383 extern bool sameaddr(); 384 extern FILE *dfopen(); 385