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 3.64 03/06/82"; 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 37 38 39 40 41 /* 42 ** Address structure. 43 ** Addresses are stored internally in this structure. 44 */ 45 46 struct address 47 { 48 char *q_paddr; /* the printname for the address */ 49 char *q_user; /* user name */ 50 char *q_host; /* host name */ 51 struct mailer *q_mailer; /* mailer to use */ 52 short q_rmailer; /* real mailer (before mapping) */ 53 u_short q_flags; /* status flags, see below */ 54 short q_uid; /* user-id of receiver (if known) */ 55 short q_gid; /* group-id of receiver (if known) */ 56 char *q_home; /* home dir (local mailer only) */ 57 char *q_fullname; /* full name if known */ 58 struct address *q_next; /* chain */ 59 struct address *q_alias; /* address this results from */ 60 struct address *q_tchain; /* temporary use chain */ 61 time_t q_timeout; /* timeout for this address */ 62 }; 63 64 typedef struct address ADDRESS; 65 66 # define QDONTSEND 000001 /* don't send to this address */ 67 # define QBADADDR 000002 /* this address is verified bad */ 68 # define QGOODUID 000004 /* the q_uid q_gid fields are good */ 69 # define QPRIMARY 000010 /* set from argv */ 70 # define QQUEUEUP 000020 /* queue for later transmission */ 71 72 73 74 75 76 /* 77 ** Mailer definition structure. 78 ** Every mailer known to the system is declared in this 79 ** structure. It defines the pathname of the mailer, some 80 ** flags associated with it, and the argument vector to 81 ** pass to it. The flags are defined in conf.c 82 ** 83 ** The argument vector is expanded before actual use. All 84 ** words except the first are passed through the macro 85 ** processor. 86 */ 87 88 struct mailer 89 { 90 char *m_name; /* symbolic name of this mailer */ 91 char *m_mailer; /* pathname of the mailer to use */ 92 u_long m_flags; /* status flags, see below */ 93 short m_badstat; /* the status code to use on unknown error */ 94 short m_mno; /* mailer number internally */ 95 char *m_from; /* pattern for From: header */ 96 char **m_argv; /* template argument vector */ 97 }; 98 99 typedef struct mailer MAILER; 100 101 /* bits for m_flags */ 102 # define M_FOPT 000000001 /* mailer takes picky -f flag */ 103 # define M_ROPT 000000002 /* mailer takes picky -r flag */ 104 # define M_QUIET 000000004 /* don't print error on bad status */ 105 # define M_RESTR 000000010 /* must be daemon to execute */ 106 # define M_NHDR 000000020 /* don't insert From line */ 107 # define M_LOCAL 000000040 /* delivery is to this host */ 108 # define M_STRIPQ 000000100 /* strip quote chars from user/host */ 109 # define M_MUSER 000000200 /* can handle multiple users at once */ 110 # define M_NEEDFROM 000000400 /* need arpa-style From: line */ 111 # define M_NEEDDATE 000001000 /* need arpa-style Date: line */ 112 # define M_MSGID 000002000 /* need Message-Id: field */ 113 # define M_USR_UPPER 000010000 /* preserve user case distinction */ 114 # define M_HST_UPPER 000020000 /* preserve host case distinction */ 115 # define M_FULLNAME 000040000 /* want Full-Name field */ 116 # define M_UGLYUUCP 000100000 /* this wants an ugly UUCP from line */ 117 # define M_EXPENSIVE 000200000 /* it costs to use this mailer.... */ 118 119 # define M_ARPAFMT (M_NEEDDATE|M_NEEDFROM|M_MSGID) 120 121 EXTERN MAILER *Mailer[MAXMAILERS+1]; 122 123 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 124 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 125 126 127 /* 128 ** Header structure. 129 ** This structure is used internally to store header items. 130 */ 131 132 struct header 133 { 134 char *h_field; /* the name of the field */ 135 char *h_value; /* the value of that field */ 136 struct header *h_link; /* the next header */ 137 u_short h_flags; /* status bits, see below */ 138 u_long h_mflags; /* m_flags bits needed */ 139 }; 140 141 typedef struct header HDR; 142 143 EXTERN HDR *Header; /* head of header list */ 144 145 /* 146 ** Header information structure. 147 ** Defined in conf.c, this struct declares the header fields 148 ** that have some magic meaning. 149 */ 150 151 struct hdrinfo 152 { 153 char *hi_field; /* the name of the field */ 154 u_short hi_flags; /* status bits, see below */ 155 u_short hi_mflags; /* m_flags needed for this field */ 156 }; 157 158 extern struct hdrinfo HdrInfo[]; 159 160 /* bits for h_flags and hi_flags */ 161 # define H_EOH 00001 /* this field terminates header */ 162 # define H_RCPT 00002 /* contains recipient addresses */ 163 # define H_DEFAULT 00004 /* if another value is found, drop this */ 164 # define H_USED 00010 /* indicates that this has been output */ 165 # define H_CHECK 00020 /* check h_mflags against m_flags */ 166 # define H_ACHECK 00040 /* ditto, but always (not just default) */ 167 # define H_FORCE 00100 /* force this field, even if default */ 168 # define H_ADDR 00200 /* this field contains addresses */ 169 170 171 172 /* 173 ** Work queue. 174 */ 175 176 struct work 177 { 178 char *w_name; /* name of control file */ 179 long w_pri; /* priority of message, see below */ 180 struct work *w_next; /* next in queue */ 181 }; 182 183 typedef struct work WORK; 184 185 EXTERN WORK *WorkQ; /* queue of things to be done */ 186 187 188 /* 189 ** Message priorities. 190 ** Priorities > 0 should be preemptive. 191 ** 192 ** MsgPriority is the number of bytes in the message adjusted 193 ** by the message priority and the amount of time the message 194 ** has been sitting around. Each priority point is worth 195 ** WKPRIFACT bytes of message, and each time we reprocess a 196 ** message the size gets reduced by WKTIMEFACT. 197 */ 198 199 # define PRI_ALERT 20 200 # define PRI_QUICK 10 201 # define PRI_FIRSTCL 3 202 # define PRI_NORMAL 0 203 # define PRI_SECONDCL -10 204 # define PRI_THIRDCL -20 205 206 # define WKPRIFACT 1800 /* bytes each pri point is worth */ 207 # define WKTIMEFACT 400 /* bytes each time unit is worth */ 208 209 EXTERN long MsgPriority; /* adjusted priority of this message */ 210 211 212 213 /* 214 ** Rewrite rules. 215 */ 216 217 struct rewrite 218 { 219 char **r_lhs; /* pattern match */ 220 char **r_rhs; /* substitution value */ 221 struct rewrite *r_next;/* next in chain */ 222 }; 223 224 extern struct rewrite *RewriteRules[]; 225 226 # define MATCHANY '\020' /* match one or more tokens */ 227 # define MATCHONE '\021' /* match exactly one token */ 228 # define MATCHCLASS '\022' /* match one token in a class */ 229 # define MATCHREPL '\023' /* replacement on RHS for above */ 230 231 # define CANONNET '\025' /* canonical net, next token */ 232 # define CANONHOST '\026' /* canonical host, next token */ 233 # define CANONUSER '\027' /* canonical user, next N tokens */ 234 235 # define CONDIF '\030' /* conditional if-then */ 236 # define CONDELSE '\031' /* conditional else */ 237 # define CONDFI '\032' /* conditional fi */ 238 239 240 241 /* 242 ** Symbol table definitions 243 */ 244 245 struct symtab 246 { 247 char *s_name; /* name to be entered */ 248 char s_type; /* general type (see below) */ 249 struct symtab *s_next; /* pointer to next in chain */ 250 union 251 { 252 long sv_class; /* bit-map of word classes */ 253 ADDRESS *sv_addr; /* pointer to address header */ 254 MAILER *sv_mailer; /* pointer to mailer */ 255 char *sv_alias; /* alias */ 256 } s_value; 257 }; 258 259 typedef struct symtab STAB; 260 261 /* symbol types */ 262 # define ST_UNDEF 0 /* undefined type */ 263 # define ST_CLASS 1 /* class map */ 264 # define ST_ADDRESS 2 /* an address in parsed format */ 265 # define ST_MAILER 3 /* a mailer header */ 266 # define ST_ALIAS 4 /* an alias */ 267 268 # define s_class s_value.sv_class 269 # define s_address s_value.sv_addr 270 # define s_mailer s_value.sv_mailer 271 # define s_alias s_value.sv_alias 272 273 extern STAB *stab(); 274 275 /* opcodes to stab */ 276 # define ST_FIND 0 /* find entry */ 277 # define ST_ENTER 1 /* enter if not there */ 278 279 280 281 282 /* 283 ** Statistics structure. 284 */ 285 286 struct statistics 287 { 288 time_t stat_itime; /* file initialization time */ 289 short stat_size; /* size of this structure */ 290 long stat_nf[MAXMAILERS]; /* # msgs from each mailer */ 291 long stat_bf[MAXMAILERS]; /* kbytes from each mailer */ 292 long stat_nt[MAXMAILERS]; /* # msgs to each mailer */ 293 long stat_bt[MAXMAILERS]; /* kbytes to each mailer */ 294 }; 295 296 EXTERN struct statistics Stat; 297 extern long kbytes(); /* for _bf, _bt */ 298 299 300 301 302 /* 303 ** Global variables. 304 */ 305 306 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 307 EXTERN bool MailBack; /* mail back response on error */ 308 EXTERN bool BerkNet; /* called from BerkNet */ 309 EXTERN bool WriteBack; /* write back response on error */ 310 EXTERN bool NoAlias; /* if set, don't do any aliasing */ 311 EXTERN bool ForceMail; /* if set, mail even if already got a copy */ 312 EXTERN bool MeToo; /* send to the sender also */ 313 EXTERN bool IgnrDot; /* don't let dot end messages */ 314 EXTERN bool SaveFrom; /* save leading "From" lines */ 315 EXTERN bool Verbose; /* set if blow-by-blow desired */ 316 EXTERN bool GrabTo; /* if set, get recipients from msg */ 317 EXTERN bool DontSend; /* mark recipients as QDONTSEND */ 318 EXTERN bool NoReturn; /* don't return letter to sender */ 319 EXTERN bool Daemon; /* running as a daemon */ 320 EXTERN bool Smtp; /* using SMTP over connection */ 321 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 322 EXTERN bool QueueUp; /* queue this message for future xmission */ 323 EXTERN bool QueueRun; /* currently running message from the queue */ 324 EXTERN bool HoldErrs; /* only output errors to transcript */ 325 EXTERN bool ArpaMode; /* set if running arpanet protocol */ 326 EXTERN bool ForkOff; /* fork after initial verification */ 327 EXTERN bool OldStyle; /* spaces (not commas) delimit addresses */ 328 EXTERN bool NoConnect; /* don't connect to non-local mailers */ 329 EXTERN bool RetReceipt; /* give a return receipt if delivery occurs */ 330 EXTERN bool SendReceipt; /* actually send a receipt back */ 331 EXTERN bool FatalErrors; /* set if fatal errors during processing */ 332 extern time_t TimeOut; /* time until timeout */ 333 EXTERN FILE *InChannel; /* input connection */ 334 EXTERN FILE *OutChannel; /* output connection */ 335 EXTERN FILE *TempFile; /* mail temp file */ 336 EXTERN FILE *Xscript; /* mail transcript file */ 337 EXTERN int RealUid; /* when Daemon, real uid of caller */ 338 EXTERN int RealGid; /* when Daemon, real gid of caller */ 339 extern int DefUid; /* default uid to run as */ 340 extern int DefGid; /* default gid to run as */ 341 EXTERN int OldUmask; /* umask when sendmail starts up */ 342 EXTERN int Debug; /* debugging level */ 343 EXTERN int Errors; /* set if errors (local to single pass) */ 344 EXTERN int ExitStat; /* exit status code */ 345 EXTERN int HopCount; /* hop count */ 346 EXTERN int AliasLevel; /* depth of aliasing */ 347 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 348 EXTERN char *OrigFrom; /* the From: line read from the message */ 349 EXTERN char *To; /* the target person */ 350 EXTERN char *HostName; /* name of this host for SMTP messages */ 351 EXTERN char *InFileName; /* input file name */ 352 EXTERN char *Transcript; /* the transcript file name */ 353 extern char *XcriptFile; /* template for Transcript */ 354 extern char *AliasFile; /* location of alias file */ 355 extern char *ConfFile; /* location of configuration file */ 356 extern char *StatFile; /* location of statistics summary */ 357 extern char *QueueDir; /* location of queue directory */ 358 EXTERN ADDRESS From; /* the person it is from */ 359 EXTERN ADDRESS *SendQueue; /* list of message recipients */ 360 EXTERN long MsgSize; /* size of the message in bytes */ 361 EXTERN time_t CurTime; /* time of this message */ 362 363 364 # include <sysexits.h> 365 366 # define setstat(s) { if (ExitStat == EX_OK) ExitStat = s; } 367 368 369 /* useful functions */ 370 371 extern char *newstr(); 372 extern ADDRESS *parse(); 373 extern char *xalloc(); 374 extern char *expand(); 375 extern bool sameaddr(); 376