1 /* 2 ** SENDMAIL.H -- Global definitions for sendmail. 3 */ 4 5 6 7 # ifdef _DEFINE 8 # define EXTERN 9 static char SmailSccsId[] = "@(#)sendmail.h 3.52.1.1 11/21/81"; 10 # else _DEFINE 11 # define EXTERN extern 12 # endif _DEFINE 13 14 # ifndef major 15 # include <sys/types.h> 16 # endif major 17 # include <stdio.h> 18 # include <ctype.h> 19 # include "useful.h" 20 21 /* 22 ** Configuration constants. 23 ** There shouldn't be much need to change these.... 24 */ 25 26 # define MAXLINE 256 /* max line length */ 27 # define MAXNAME 128 /* max length of a name */ 28 # define MAXFIELD 2500 /* max total length of a hdr field */ 29 # define MAXPV 40 /* max # of parms to mailers */ 30 # define MAXHOP 30 /* max value of HopCount */ 31 # define MAXATOM 30 /* max atoms per address */ 32 # define MAXMAILERS 10 /* maximum mailers known to system */ 33 # define SPACESUB ('.'|0200) /* substitution for <lwsp> */ 34 35 extern char Arpa_Info[]; /* the message number for Arpanet info */ 36 37 38 39 40 41 42 /* 43 ** Address structure. 44 ** Addresses are stored internally in this structure. 45 ** 46 ** Each address is on two chains and in one tree. 47 ** The q_next chain is used to link together addresses 48 ** for one mailer (and is rooted in a mailer). 49 ** The q_chain chain is used to maintain a list of 50 ** addresses originating from one call to sendto, and 51 ** is used primarily for printing messages. 52 ** The q_alias, q_sibling, and q_child tree maintains 53 ** a complete tree of the aliases. q_alias points to 54 ** the parent -- obviously, there can be several, and 55 ** so this points to "one" of them. Ditto for q_sibling. 56 */ 57 58 struct address 59 { 60 char *q_paddr; /* the printname for the address */ 61 char *q_user; /* user name */ 62 char *q_host; /* host name */ 63 struct mailer *q_mailer; /* mailer to use */ 64 short q_rmailer; /* real mailer (before mapping) */ 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 of this person */ 70 time_t q_timeout; /* timeout for this address */ 71 struct address *q_next; /* chain */ 72 struct address *q_alias; /* parent in alias tree */ 73 struct address *q_sibling; /* sibling in alias tree */ 74 struct address *q_child; /* child in alias tree */ 75 }; 76 77 typedef struct address ADDRESS; 78 79 # define QDONTSEND 000001 /* don't send to this address */ 80 # define QBADADDR 000002 /* this address is verified bad */ 81 # define QGOODUID 000004 /* the q_uid q_gid fields are good */ 82 # define QPRIMARY 000010 /* set from argv */ 83 # define QQUEUEUP 000020 /* queue for later transmission */ 84 # define QPSEUDO 000040 /* only on the list for verification */ 85 86 87 88 89 90 /* 91 ** Mailer definition structure. 92 ** Every mailer known to the system is declared in this 93 ** structure. It defines the pathname of the mailer, some 94 ** flags associated with it, and the argument vector to 95 ** pass to it. The flags are defined in conf.c 96 ** 97 ** The host map is a list of lists of strings. Within each 98 ** list, any host is mapped to the last host in the list. 99 ** This allows multiple names, as well as doing clever 100 ** mail grouping in point-to-point networks. Note: this 101 ** is only used internally, so the apparent host is still 102 ** kept around. 103 ** 104 ** The argument vector is expanded before actual use. All 105 ** words except the first are passed through the macro 106 ** processor. 107 */ 108 109 struct mailer 110 { 111 char *m_name; /* symbolic name of this mailer */ 112 char *m_mailer; /* pathname of the mailer to use */ 113 u_long m_flags; /* status flags, see below */ 114 short m_badstat; /* the status code to use on unknown error */ 115 short m_mno; /* mailer number internally */ 116 char *m_from; /* pattern for From: header */ 117 char **m_argv; /* template argument vector */ 118 ADDRESS *m_sendq; /* list of addresses to send to */ 119 }; 120 121 typedef struct mailer MAILER; 122 123 # define M_FOPT 000001 /* mailer takes picky -f flag */ 124 # define M_ROPT 000002 /* mailer takes picky -r flag */ 125 # define M_QUIET 000004 /* don't print error on bad status */ 126 # define M_RESTR 000010 /* must be daemon to execute */ 127 # define M_NHDR 000020 /* don't insert From line */ 128 # define M_LOCAL 000040 /* delivery is to this host */ 129 # define M_STRIPQ 000100 /* strip quote characters from user/host */ 130 # define M_MUSER 000200 /* mailer can handle multiple users at once */ 131 # define M_NEEDFROM 000400 /* need arpa-style From: line */ 132 # define M_NEEDDATE 001000 /* need arpa-style Date: line */ 133 # define M_MSGID 002000 /* need Message-Id: field */ 134 # define M_USR_UPPER 010000 /* preserve user case distinction */ 135 # define M_HST_UPPER 020000 /* preserve host case distinction */ 136 # define M_FULLNAME 040000 /* want Full-Name field */ 137 138 # define M_ARPAFMT (M_NEEDDATE|M_NEEDFROM|M_MSGID) 139 140 EXTERN MAILER *Mailer[MAXMAILERS+1]; 141 142 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 143 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 144 145 146 /* 147 ** Header structure. 148 ** This structure is used internally to store header items. 149 */ 150 151 struct header 152 { 153 char *h_field; /* the name of the field */ 154 char *h_value; /* the value of that field */ 155 struct header *h_link; /* the next header */ 156 u_short h_flags; /* status bits, see below */ 157 u_long h_mflags; /* m_flags bits needed */ 158 }; 159 160 typedef struct header HDR; 161 162 EXTERN HDR *Header; /* head of header list */ 163 164 /* 165 ** Header information structure. 166 ** Defined in conf.c, this struct declares the header fields 167 ** that have some magic meaning. 168 */ 169 170 struct hdrinfo 171 { 172 char *hi_field; /* the name of the field */ 173 u_short hi_flags; /* status bits, see below */ 174 u_short hi_mflags; /* m_flags needed for this field */ 175 }; 176 177 extern struct hdrinfo HdrInfo[]; 178 179 /* bits for h_flags and hi_flags */ 180 # define H_EOH 00001 /* this field terminates header */ 181 # define H_DEFAULT 00004 /* if another value is found, drop this */ 182 # define H_USED 00010 /* indicates that this has been output */ 183 # define H_CHECK 00020 /* check h_mflags against m_flags */ 184 # define H_ACHECK 00040 /* ditto, but always (not just default) */ 185 # define H_FORCE 00100 /* force this field, even if default */ 186 # define H_ADDR 00200 /* this field contains addresses */ 187 188 189 190 /* 191 ** Work queue. 192 */ 193 194 struct work 195 { 196 char *w_name; /* name of control file */ 197 short w_pri; /* priority of message, see below */ 198 long w_size; /* length of data file */ 199 struct work *w_next; /* next in queue */ 200 }; 201 202 typedef struct work WORK; 203 204 EXTERN WORK *WorkQ; /* queue of things to be done */ 205 206 207 /* 208 ** Message priorities. 209 ** Priorities > 0 should be preemptive. 210 */ 211 212 # define PRI_ALERT 20 213 # define PRI_QUICK 10 214 # define PRI_FIRSTCL 0 215 # define PRI_NORMAL -4 216 # define PRI_SECONDCL -10 217 # define PRI_THIRDCL -20 218 219 EXTERN int MsgPriority; /* priority of this message */ 220 221 222 223 /* 224 ** Rewrite rules. 225 */ 226 227 struct rewrite 228 { 229 char **r_lhs; /* pattern match */ 230 char **r_rhs; /* substitution value */ 231 struct rewrite *r_next;/* next in chain */ 232 }; 233 234 extern struct rewrite *RewriteRules[]; 235 236 # define MATCHANY '\020' /* match one or more tokens */ 237 # define MATCHONE '\021' /* match exactly one token */ 238 # define MATCHCLASS '\022' /* match one token in a class */ 239 # define MATCHREPL '\023' /* replacement on RHS for above */ 240 241 # define CANONNET '\025' /* canonical net, next token */ 242 # define CANONHOST '\026' /* canonical host, next token */ 243 # define CANONUSER '\027' /* canonical user, next N tokens */ 244 245 246 247 /* 248 ** Symbol table definitions 249 */ 250 251 struct symtab 252 { 253 char *s_name; /* name to be entered */ 254 char s_type; /* general type (see below) */ 255 struct symtab *s_next; /* pointer to next in chain */ 256 union 257 { 258 long sv_class; /* bit-map of word classes */ 259 ADDRESS *sv_addr; /* pointer to address header */ 260 MAILER *sv_mailer; /* pointer to mailer */ 261 char *sv_alias; /* alias */ 262 } s_value; 263 }; 264 265 typedef struct symtab STAB; 266 267 /* symbol types */ 268 # define ST_UNDEF 0 /* undefined type */ 269 # define ST_CLASS 1 /* class map */ 270 # define ST_ADDRESS 2 /* an address in parsed format */ 271 # define ST_MAILER 3 /* a mailer header */ 272 # define ST_ALIAS 4 /* an alias */ 273 274 # define s_class s_value.sv_class 275 # define s_addr s_value.sv_addr 276 # define s_mailer s_value.sv_mailer 277 # define s_alias s_value.sv_alias 278 279 extern STAB *stab(); 280 281 /* opcodes to stab */ 282 # define ST_FIND 0 /* find entry */ 283 # define ST_ENTER 1 /* enter if not there */ 284 285 286 287 288 /* 289 ** Statistics structure. 290 */ 291 292 struct statistics 293 { 294 time_t stat_itime; /* file initialization time */ 295 short stat_size; /* size of this structure */ 296 long stat_nf[MAXMAILERS]; /* # msgs from each mailer */ 297 long stat_bf[MAXMAILERS]; /* kbytes from each mailer */ 298 long stat_nt[MAXMAILERS]; /* # msgs to each mailer */ 299 long stat_bt[MAXMAILERS]; /* kbytes to each mailer */ 300 }; 301 302 EXTERN struct statistics Stat; 303 extern long kbytes(); /* for _bf, _bt */ 304 305 306 307 308 /* 309 ** Global variables. 310 */ 311 312 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 313 EXTERN bool MailBack; /* mail back response on error */ 314 EXTERN bool BerkNet; /* called from BerkNet */ 315 EXTERN bool WriteBack; /* write back response on error */ 316 EXTERN bool NoAlias; /* if set, don't do any aliasing */ 317 EXTERN bool ForceMail; /* if set, mail even if already got a copy */ 318 EXTERN bool MeToo; /* send to the sender also */ 319 EXTERN bool IgnrDot; /* don't let dot end messages */ 320 EXTERN bool SaveFrom; /* save leading "From" lines */ 321 EXTERN bool Verbose; /* set if blow-by-blow desired */ 322 EXTERN bool GrabTo; /* if set, get recipients from msg */ 323 EXTERN bool DontSend; /* mark recipients as QDONTSEND */ 324 EXTERN bool NoReturn; /* don't return letter to sender */ 325 EXTERN bool Daemon; /* running as a daemon */ 326 EXTERN bool Smtp; /* using SMTP over connection */ 327 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 328 EXTERN bool QueueUp; /* queue this message for future xmission */ 329 EXTERN bool QueueRun; /* currently running something from the queue */ 330 EXTERN bool HoldErrs; /* only output errors to transcript */ 331 EXTERN bool ArpaMode; /* set if running arpanet protocol */ 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 OldUmask; /* umask when sendmail starts up */ 340 EXTERN int Debug; /* debugging level */ 341 EXTERN int Errors; /* set if errors */ 342 EXTERN int ExitStat; /* exit status code */ 343 EXTERN int HopCount; /* hop count */ 344 EXTERN int AliasLevel; /* depth of aliasing */ 345 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 346 EXTERN char *OrigFrom; /* the From: line read from the message */ 347 EXTERN char *To; /* the target person */ 348 EXTERN char *HostName; /* name of this host for SMTP messages */ 349 EXTERN char *InFileName; /* input file name */ 350 EXTERN char *Transcript; /* the transcript file name */ 351 extern char *XcriptFile; /* template for Transcript */ 352 extern char *AliasFile; /* location of alias file */ 353 extern char *ConfFile; /* location of configuration file */ 354 extern char *StatFile; /* location of statistics summary */ 355 extern char *QueueDir; /* location of queue directory */ 356 EXTERN ADDRESS From; /* the person it is from */ 357 EXTERN long MsgSize; /* size of the message in bytes */ 358 EXTERN time_t CurTime; /* time of this message */ 359 360 361 # include <sysexits.h> 362 363 # define setstat(s) { if (ExitStat == EX_OK) ExitStat = s; } 364 365 366 /* useful functions */ 367 368 extern char *newstr(); 369 extern ADDRESS *parse(); 370 extern char *xalloc(); 371 extern char *expand(); 372 extern bool sameaddr(); 373