1 /* 2 ** SENDMAIL.H -- Global definitions for sendmail. 3 */ 4 5 6 7 # ifdef _DEFINE 8 # define EXTERN 9 static char SmailSccsId[] = "@(#)sendmail.h 3.55 11/22/81"; 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 47 struct address 48 { 49 char *q_paddr; /* the printname for the address */ 50 char *q_user; /* user name */ 51 char *q_host; /* host name */ 52 struct mailer *q_mailer; /* mailer to use */ 53 short q_rmailer; /* real mailer (before mapping) */ 54 u_short q_flags; /* status flags, see below */ 55 short q_uid; /* user-id of receiver (if known) */ 56 short q_gid; /* group-id of receiver (if known) */ 57 char *q_home; /* home dir (local mailer only) */ 58 char *q_fullname; /* full name if known */ 59 struct address *q_next; /* chain */ 60 struct address *q_alias; /* address this results from */ 61 struct address *q_tchain; /* temporary use chain */ 62 time_t q_timeout; /* timeout for this address */ 63 }; 64 65 typedef struct address ADDRESS; 66 67 # define QDONTSEND 000001 /* don't send to this address */ 68 # define QBADADDR 000002 /* this address is verified bad */ 69 # define QGOODUID 000004 /* the q_uid q_gid fields are good */ 70 # define QPRIMARY 000010 /* set from argv */ 71 # define QQUEUEUP 000020 /* queue for later transmission */ 72 73 74 75 76 77 /* 78 ** Mailer definition structure. 79 ** Every mailer known to the system is declared in this 80 ** structure. It defines the pathname of the mailer, some 81 ** flags associated with it, and the argument vector to 82 ** pass to it. The flags are defined in conf.c 83 ** 84 ** The argument vector is expanded before actual use. All 85 ** words except the first are passed through the macro 86 ** processor. 87 */ 88 89 struct mailer 90 { 91 char *m_name; /* symbolic name of this mailer */ 92 char *m_mailer; /* pathname of the mailer to use */ 93 u_long m_flags; /* status flags, see below */ 94 short m_badstat; /* the status code to use on unknown error */ 95 short m_mno; /* mailer number internally */ 96 char *m_from; /* pattern for From: header */ 97 char **m_argv; /* template argument vector */ 98 }; 99 100 typedef struct mailer MAILER; 101 102 # define M_FOPT 000001 /* mailer takes picky -f flag */ 103 # define M_ROPT 000002 /* mailer takes picky -r flag */ 104 # define M_QUIET 000004 /* don't print error on bad status */ 105 # define M_RESTR 000010 /* must be daemon to execute */ 106 # define M_NHDR 000020 /* don't insert From line */ 107 # define M_LOCAL 000040 /* delivery is to this host */ 108 # define M_STRIPQ 000100 /* strip quote characters from user/host */ 109 # define M_MUSER 000200 /* mailer can handle multiple users at once */ 110 # define M_NEEDFROM 000400 /* need arpa-style From: line */ 111 # define M_NEEDDATE 001000 /* need arpa-style Date: line */ 112 # define M_MSGID 002000 /* need Message-Id: field */ 113 # define M_USR_UPPER 010000 /* preserve user case distinction */ 114 # define M_HST_UPPER 020000 /* preserve host case distinction */ 115 # define M_FULLNAME 040000 /* want Full-Name field */ 116 117 # define M_ARPAFMT (M_NEEDDATE|M_NEEDFROM|M_MSGID) 118 119 EXTERN MAILER *Mailer[MAXMAILERS+1]; 120 121 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 122 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 123 124 125 /* 126 ** Header structure. 127 ** This structure is used internally to store header items. 128 */ 129 130 struct header 131 { 132 char *h_field; /* the name of the field */ 133 char *h_value; /* the value of that field */ 134 struct header *h_link; /* the next header */ 135 u_short h_flags; /* status bits, see below */ 136 u_long h_mflags; /* m_flags bits needed */ 137 }; 138 139 typedef struct header HDR; 140 141 EXTERN HDR *Header; /* head of header list */ 142 143 /* 144 ** Header information structure. 145 ** Defined in conf.c, this struct declares the header fields 146 ** that have some magic meaning. 147 */ 148 149 struct hdrinfo 150 { 151 char *hi_field; /* the name of the field */ 152 u_short hi_flags; /* status bits, see below */ 153 u_short hi_mflags; /* m_flags needed for this field */ 154 }; 155 156 extern struct hdrinfo HdrInfo[]; 157 158 /* bits for h_flags and hi_flags */ 159 # define H_EOH 00001 /* this field terminates header */ 160 # define H_DEFAULT 00004 /* if another value is found, drop this */ 161 # define H_USED 00010 /* indicates that this has been output */ 162 # define H_CHECK 00020 /* check h_mflags against m_flags */ 163 # define H_ACHECK 00040 /* ditto, but always (not just default) */ 164 # define H_FORCE 00100 /* force this field, even if default */ 165 # define H_ADDR 00200 /* this field contains addresses */ 166 167 168 169 /* 170 ** Work queue. 171 */ 172 173 struct work 174 { 175 char *w_name; /* name of control file */ 176 long w_pri; /* priority of message, see below */ 177 struct work *w_next; /* next in queue */ 178 }; 179 180 typedef struct work WORK; 181 182 EXTERN WORK *WorkQ; /* queue of things to be done */ 183 184 185 /* 186 ** Message priorities. 187 ** Priorities > 0 should be preemptive. 188 ** 189 ** MsgPriority is the number of bytes in the message adjusted 190 ** by the message priority and the amount of time the message 191 ** has been sitting around. Each priority point is worth 192 ** WKPRIFACT bytes of message, and each time we reprocess a 193 ** message the size gets reduced by WKTIMEFACT. 194 */ 195 196 # define PRI_ALERT 20 197 # define PRI_QUICK 10 198 # define PRI_FIRSTCL 3 199 # define PRI_NORMAL 0 200 # define PRI_SECONDCL -10 201 # define PRI_THIRDCL -20 202 203 # define WKPRIFACT 1800 /* bytes each pri point is worth */ 204 # define WKTIMEFACT 400 /* bytes each time unit is worth */ 205 206 EXTERN long MsgPriority; /* adjusted priority of this message */ 207 208 209 210 /* 211 ** Rewrite rules. 212 */ 213 214 struct rewrite 215 { 216 char **r_lhs; /* pattern match */ 217 char **r_rhs; /* substitution value */ 218 struct rewrite *r_next;/* next in chain */ 219 }; 220 221 extern struct rewrite *RewriteRules[]; 222 223 # define MATCHANY '\020' /* match one or more tokens */ 224 # define MATCHONE '\021' /* match exactly one token */ 225 # define MATCHCLASS '\022' /* match one token in a class */ 226 # define MATCHREPL '\023' /* replacement on RHS for above */ 227 228 # define CANONNET '\025' /* canonical net, next token */ 229 # define CANONHOST '\026' /* canonical host, next token */ 230 # define CANONUSER '\027' /* canonical user, next N tokens */ 231 232 233 234 /* 235 ** Symbol table definitions 236 */ 237 238 struct symtab 239 { 240 char *s_name; /* name to be entered */ 241 char s_type; /* general type (see below) */ 242 struct symtab *s_next; /* pointer to next in chain */ 243 union 244 { 245 long sv_class; /* bit-map of word classes */ 246 ADDRESS *sv_addr; /* pointer to address header */ 247 MAILER *sv_mailer; /* pointer to mailer */ 248 char *sv_alias; /* alias */ 249 } s_value; 250 }; 251 252 typedef struct symtab STAB; 253 254 /* symbol types */ 255 # define ST_UNDEF 0 /* undefined type */ 256 # define ST_CLASS 1 /* class map */ 257 # define ST_ADDRESS 2 /* an address in parsed format */ 258 # define ST_MAILER 3 /* a mailer header */ 259 # define ST_ALIAS 4 /* an alias */ 260 261 # define s_class s_value.sv_class 262 # define s_addr s_value.sv_addr 263 # define s_mailer s_value.sv_mailer 264 # define s_alias s_value.sv_alias 265 266 extern STAB *stab(); 267 268 /* opcodes to stab */ 269 # define ST_FIND 0 /* find entry */ 270 # define ST_ENTER 1 /* enter if not there */ 271 272 273 274 275 /* 276 ** Statistics structure. 277 */ 278 279 struct statistics 280 { 281 time_t stat_itime; /* file initialization time */ 282 short stat_size; /* size of this structure */ 283 long stat_nf[MAXMAILERS]; /* # msgs from each mailer */ 284 long stat_bf[MAXMAILERS]; /* kbytes from each mailer */ 285 long stat_nt[MAXMAILERS]; /* # msgs to each mailer */ 286 long stat_bt[MAXMAILERS]; /* kbytes to each mailer */ 287 }; 288 289 EXTERN struct statistics Stat; 290 extern long kbytes(); /* for _bf, _bt */ 291 292 293 294 295 /* 296 ** Global variables. 297 */ 298 299 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 300 EXTERN bool MailBack; /* mail back response on error */ 301 EXTERN bool BerkNet; /* called from BerkNet */ 302 EXTERN bool WriteBack; /* write back response on error */ 303 EXTERN bool NoAlias; /* if set, don't do any aliasing */ 304 EXTERN bool ForceMail; /* if set, mail even if already got a copy */ 305 EXTERN bool MeToo; /* send to the sender also */ 306 EXTERN bool IgnrDot; /* don't let dot end messages */ 307 EXTERN bool SaveFrom; /* save leading "From" lines */ 308 EXTERN bool Verbose; /* set if blow-by-blow desired */ 309 EXTERN bool GrabTo; /* if set, get recipients from msg */ 310 EXTERN bool DontSend; /* mark recipients as QDONTSEND */ 311 EXTERN bool NoReturn; /* don't return letter to sender */ 312 EXTERN bool Daemon; /* running as a daemon */ 313 EXTERN bool Smtp; /* using SMTP over connection */ 314 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 315 EXTERN bool QueueUp; /* queue this message for future xmission */ 316 EXTERN bool QueueRun; /* currently running something from the queue */ 317 EXTERN bool HoldErrs; /* only output errors to transcript */ 318 EXTERN bool ArpaMode; /* set if running arpanet protocol */ 319 extern time_t TimeOut; /* time until timeout */ 320 EXTERN FILE *InChannel; /* input connection */ 321 EXTERN FILE *OutChannel; /* output connection */ 322 EXTERN FILE *TempFile; /* mail temp file */ 323 EXTERN FILE *Xscript; /* mail transcript file */ 324 EXTERN int RealUid; /* when Daemon, real uid of caller */ 325 EXTERN int RealGid; /* when Daemon, real gid of caller */ 326 EXTERN int OldUmask; /* umask when sendmail starts up */ 327 EXTERN int Debug; /* debugging level */ 328 EXTERN int Errors; /* set if errors */ 329 EXTERN int ExitStat; /* exit status code */ 330 EXTERN int HopCount; /* hop count */ 331 EXTERN int AliasLevel; /* depth of aliasing */ 332 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 333 EXTERN char *OrigFrom; /* the From: line read from the message */ 334 EXTERN char *To; /* the target person */ 335 EXTERN char *HostName; /* name of this host for SMTP messages */ 336 EXTERN char *InFileName; /* input file name */ 337 EXTERN char *Transcript; /* the transcript file name */ 338 extern char *XcriptFile; /* template for Transcript */ 339 extern char *AliasFile; /* location of alias file */ 340 extern char *ConfFile; /* location of configuration file */ 341 extern char *StatFile; /* location of statistics summary */ 342 extern char *QueueDir; /* location of queue directory */ 343 EXTERN ADDRESS From; /* the person it is from */ 344 EXTERN ADDRESS *SendQueue; /* list of message recipients */ 345 EXTERN long MsgSize; /* size of the message in bytes */ 346 EXTERN time_t CurTime; /* time of this message */ 347 348 349 # include <sysexits.h> 350 351 # define setstat(s) { if (ExitStat == EX_OK) ExitStat = s; } 352 353 354 /* useful functions */ 355 356 extern char *newstr(); 357 extern ADDRESS *parse(); 358 extern char *xalloc(); 359 extern char *expand(); 360 extern bool sameaddr(); 361