1 /* 2 ** SENDMAIL.H -- Global definitions for sendmail. 3 */ 4 5 6 7 # ifdef _DEFINE 8 # define EXTERN 9 static char SmailSccsId[] = "@(#)sendmail.h 3.53 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 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 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 host map is a list of lists of strings. Within each 84 ** list, any host is mapped to the last host in the list. 85 ** This allows multiple names, as well as doing clever 86 ** mail grouping in point-to-point networks. Note: this 87 ** is only used internally, so the apparent host is still 88 ** kept around. 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 u_long m_flags; /* status flags, see below */ 100 short m_badstat; /* the status code to use on unknown error */ 101 short m_mno; /* mailer number internally */ 102 char *m_from; /* pattern for From: header */ 103 char **m_argv; /* template argument vector */ 104 ADDRESS *m_sendq; /* list of addresses to send to */ 105 }; 106 107 typedef struct mailer MAILER; 108 109 # define M_FOPT 000001 /* mailer takes picky -f flag */ 110 # define M_ROPT 000002 /* mailer takes picky -r flag */ 111 # define M_QUIET 000004 /* don't print error on bad status */ 112 # define M_RESTR 000010 /* must be daemon to execute */ 113 # define M_NHDR 000020 /* don't insert From line */ 114 # define M_LOCAL 000040 /* delivery is to this host */ 115 # define M_STRIPQ 000100 /* strip quote characters from user/host */ 116 # define M_MUSER 000200 /* mailer can handle multiple users at once */ 117 # define M_NEEDFROM 000400 /* need arpa-style From: line */ 118 # define M_NEEDDATE 001000 /* need arpa-style Date: line */ 119 # define M_MSGID 002000 /* need Message-Id: field */ 120 # define M_USR_UPPER 010000 /* preserve user case distinction */ 121 # define M_HST_UPPER 020000 /* preserve host case distinction */ 122 # define M_FULLNAME 040000 /* want Full-Name field */ 123 124 # define M_ARPAFMT (M_NEEDDATE|M_NEEDFROM|M_MSGID) 125 126 EXTERN MAILER *Mailer[MAXMAILERS+1]; 127 128 EXTERN MAILER *LocalMailer; /* ptr to local mailer */ 129 EXTERN MAILER *ProgMailer; /* ptr to program mailer */ 130 131 132 /* 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 u_long h_mflags; /* m_flags bits needed */ 144 }; 145 146 typedef struct header HDR; 147 148 EXTERN HDR *Header; /* head of header list */ 149 150 /* 151 ** Header information structure. 152 ** Defined in conf.c, this struct declares the header fields 153 ** that have some magic meaning. 154 */ 155 156 struct hdrinfo 157 { 158 char *hi_field; /* the name of the field */ 159 u_short hi_flags; /* status bits, see below */ 160 u_short hi_mflags; /* m_flags needed for this field */ 161 }; 162 163 extern struct hdrinfo HdrInfo[]; 164 165 /* bits for h_flags and hi_flags */ 166 # define H_EOH 00001 /* this field terminates header */ 167 # define H_DEFAULT 00004 /* if another value is found, drop this */ 168 # define H_USED 00010 /* indicates that this has been output */ 169 # define H_CHECK 00020 /* check h_mflags against m_flags */ 170 # define H_ACHECK 00040 /* ditto, but always (not just default) */ 171 # define H_FORCE 00100 /* force this field, even if default */ 172 # define H_ADDR 00200 /* this field contains addresses */ 173 174 175 176 /* 177 ** Work queue. 178 */ 179 180 struct work 181 { 182 char *w_name; /* name of control file */ 183 short w_pri; /* priority of message, see below */ 184 long w_size; /* length of data file */ 185 struct work *w_next; /* next in queue */ 186 }; 187 188 typedef struct work WORK; 189 190 EXTERN WORK *WorkQ; /* queue of things to be done */ 191 192 193 /* 194 ** Message priorities. 195 ** Priorities > 0 should be preemptive. 196 */ 197 198 # define PRI_ALERT 20 199 # define PRI_QUICK 10 200 # define PRI_FIRSTCL 0 201 # define PRI_NORMAL -4 202 # define PRI_SECONDCL -10 203 # define PRI_THIRDCL -20 204 205 EXTERN int MsgPriority; /* priority of this message */ 206 207 208 209 /* 210 ** Rewrite rules. 211 */ 212 213 struct rewrite 214 { 215 char **r_lhs; /* pattern match */ 216 char **r_rhs; /* substitution value */ 217 struct rewrite *r_next;/* next in chain */ 218 }; 219 220 extern struct rewrite *RewriteRules[]; 221 222 # define MATCHANY '\020' /* match one or more tokens */ 223 # define MATCHONE '\021' /* match exactly one token */ 224 # define MATCHCLASS '\022' /* match one token in a class */ 225 # define MATCHREPL '\023' /* replacement on RHS for above */ 226 227 # define CANONNET '\025' /* canonical net, next token */ 228 # define CANONHOST '\026' /* canonical host, next token */ 229 # define CANONUSER '\027' /* canonical user, next N tokens */ 230 231 232 233 /* 234 ** Symbol table definitions 235 */ 236 237 struct symtab 238 { 239 char *s_name; /* name to be entered */ 240 char s_type; /* general type (see below) */ 241 struct symtab *s_next; /* pointer to next in chain */ 242 union 243 { 244 long sv_class; /* bit-map of word classes */ 245 ADDRESS *sv_addr; /* pointer to address header */ 246 MAILER *sv_mailer; /* pointer to mailer */ 247 char *sv_alias; /* alias */ 248 } s_value; 249 }; 250 251 typedef struct symtab STAB; 252 253 /* symbol types */ 254 # define ST_UNDEF 0 /* undefined type */ 255 # define ST_CLASS 1 /* class map */ 256 # define ST_ADDRESS 2 /* an address in parsed format */ 257 # define ST_MAILER 3 /* a mailer header */ 258 # define ST_ALIAS 4 /* an alias */ 259 260 # define s_class s_value.sv_class 261 # define s_addr s_value.sv_addr 262 # define s_mailer s_value.sv_mailer 263 # define s_alias s_value.sv_alias 264 265 extern STAB *stab(); 266 267 /* opcodes to stab */ 268 # define ST_FIND 0 /* find entry */ 269 # define ST_ENTER 1 /* enter if not there */ 270 271 272 273 274 /* 275 ** Statistics structure. 276 */ 277 278 struct statistics 279 { 280 time_t stat_itime; /* file initialization time */ 281 short stat_size; /* size of this structure */ 282 long stat_nf[MAXMAILERS]; /* # msgs from each mailer */ 283 long stat_bf[MAXMAILERS]; /* kbytes from each mailer */ 284 long stat_nt[MAXMAILERS]; /* # msgs to each mailer */ 285 long stat_bt[MAXMAILERS]; /* kbytes to each mailer */ 286 }; 287 288 EXTERN struct statistics Stat; 289 extern long kbytes(); /* for _bf, _bt */ 290 291 292 293 294 /* 295 ** Global variables. 296 */ 297 298 EXTERN bool FromFlag; /* if set, "From" person is explicit */ 299 EXTERN bool MailBack; /* mail back response on error */ 300 EXTERN bool BerkNet; /* called from BerkNet */ 301 EXTERN bool WriteBack; /* write back response on error */ 302 EXTERN bool NoAlias; /* if set, don't do any aliasing */ 303 EXTERN bool ForceMail; /* if set, mail even if already got a copy */ 304 EXTERN bool MeToo; /* send to the sender also */ 305 EXTERN bool IgnrDot; /* don't let dot end messages */ 306 EXTERN bool SaveFrom; /* save leading "From" lines */ 307 EXTERN bool Verbose; /* set if blow-by-blow desired */ 308 EXTERN bool GrabTo; /* if set, get recipients from msg */ 309 EXTERN bool DontSend; /* mark recipients as QDONTSEND */ 310 EXTERN bool NoReturn; /* don't return letter to sender */ 311 EXTERN bool Daemon; /* running as a daemon */ 312 EXTERN bool Smtp; /* using SMTP over connection */ 313 EXTERN bool SuprErrs; /* set if we are suppressing errors */ 314 EXTERN bool QueueUp; /* queue this message for future xmission */ 315 EXTERN bool QueueRun; /* currently running something from the queue */ 316 EXTERN bool HoldErrs; /* only output errors to transcript */ 317 EXTERN bool ArpaMode; /* set if running arpanet protocol */ 318 extern time_t TimeOut; /* time until timeout */ 319 EXTERN FILE *InChannel; /* input connection */ 320 EXTERN FILE *OutChannel; /* output connection */ 321 EXTERN FILE *TempFile; /* mail temp file */ 322 EXTERN FILE *Xscript; /* mail transcript file */ 323 EXTERN int RealUid; /* when Daemon, real uid of caller */ 324 EXTERN int RealGid; /* when Daemon, real gid of caller */ 325 EXTERN int OldUmask; /* umask when sendmail starts up */ 326 EXTERN int Debug; /* debugging level */ 327 EXTERN int Errors; /* set if errors */ 328 EXTERN int ExitStat; /* exit status code */ 329 EXTERN int HopCount; /* hop count */ 330 EXTERN int AliasLevel; /* depth of aliasing */ 331 EXTERN time_t QueueIntvl; /* intervals between running the queue */ 332 EXTERN char *OrigFrom; /* the From: line read from the message */ 333 EXTERN char *To; /* the target person */ 334 EXTERN char *HostName; /* name of this host for SMTP messages */ 335 EXTERN char *InFileName; /* input file name */ 336 EXTERN char *Transcript; /* the transcript file name */ 337 extern char *XcriptFile; /* template for Transcript */ 338 extern char *AliasFile; /* location of alias file */ 339 extern char *ConfFile; /* location of configuration file */ 340 extern char *StatFile; /* location of statistics summary */ 341 extern char *QueueDir; /* location of queue directory */ 342 EXTERN ADDRESS From; /* the person it is from */ 343 EXTERN long MsgSize; /* size of the message in bytes */ 344 EXTERN time_t CurTime; /* time of this message */ 345 346 347 # include <sysexits.h> 348 349 # define setstat(s) { if (ExitStat == EX_OK) ExitStat = s; } 350 351 352 /* useful functions */ 353 354 extern char *newstr(); 355 extern ADDRESS *parse(); 356 extern char *xalloc(); 357 extern char *expand(); 358 extern bool sameaddr(); 359