1 /* 2 ** SENDMAIL.H -- Global definitions for sendmail. 3 ** 4 ** @(#)sendmail.h 3.27 08/20/81 5 */ 6 7 8 9 10 # include "useful.h" 11 12 /* 13 ** Manifest constants. 14 */ 15 16 # define MAXLINE 256 /* maximum line length */ 17 # define MAXNAME 128 /* maximum length of a name */ 18 # define MAXFIELD 2500 /* maximum total length of a header field */ 19 # define MAXPV 40 /* maximum # of parms to mailers */ 20 # define MAXHOP 30 /* maximum value of HopCount */ 21 # define MAXATOM 15 /* max atoms per address */ 22 # define MAXMAILERS 10 /* maximum mailers known to system */ 23 # define ALIASFILE "/usr/lib/aliases" /* location of alias file */ 24 # define CONFFILE "/usr/lib/sendmail.cf" /* configuration file */ 25 26 /* values for ArpaMode -- these are ordered!! */ 27 # define ARPA_NONE 0 /* not in arpanet mode */ 28 # define ARPA_OLD 1 /* in old arpanet mode */ 29 # define ARPA_MAIL 2 /* in regular arpanet mail */ 30 # define ARPA_FILE 3 /* reading over data connection */ 31 32 extern char Arpa_Info[]; /* the message number for Arpanet info */ 33 34 35 36 37 38 39 /* 40 ** Address structure. 41 ** Addresses are stored internally in this structure. 42 */ 43 44 struct address 45 { 46 char *q_paddr; /* the printname for the address */ 47 char *q_user; /* user name */ 48 char *q_host; /* host name */ 49 short q_mailer; /* mailer to use */ 50 short q_rmailer; /* real mailer (before mapping) */ 51 u_short q_flags; /* status flags, see below */ 52 char *q_home; /* home dir (local mailer only) */ 53 struct address *q_next; /* chain */ 54 }; 55 56 typedef struct address ADDRESS; 57 58 # define QDONTSEND 000001 /* don't send to this address */ 59 # define QBADADDR 000002 /* this address is verified bad */ 60 61 62 63 64 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 host map is a list of lists of strings. Within each 73 ** list, any host is mapped to the last host in the list. 74 ** This allows multiple names, as well as doing clever 75 ** mail grouping in point-to-point networks. Note: this 76 ** is only used internally, so the apparent host is still 77 ** kept around. 78 ** 79 ** The argument vector is expanded before actual use. All 80 ** words except the first are passed through the macro 81 ** processor. 82 */ 83 84 struct mailer 85 { 86 char *m_name; /* symbolic name of this mailer */ 87 char *m_mailer; /* pathname of the mailer to use */ 88 u_long m_flags; /* status flags, see below */ 89 short m_badstat; /* the status code to use on unknown error */ 90 char *m_from; /* pattern for From: header */ 91 char **m_argv; /* template argument vector */ 92 ADDRESS *m_sendq; /* list of addresses to send to */ 93 }; 94 95 typedef struct mailer MAILER; 96 97 # define M_FOPT 000001 /* mailer takes picky -f flag */ 98 # define M_ROPT 000002 /* mailer takes picky -r flag */ 99 # define M_QUIET 000004 /* don't print error on bad status */ 100 # define M_RESTR 000010 /* must be daemon to execute */ 101 # define M_NHDR 000020 /* don't insert From line */ 102 # define M_NOHOST 000040 /* ignore host in comparisons */ 103 # define M_STRIPQ 000100 /* strip quote characters from user/host */ 104 # define M_MUSER 000200 /* mailer can handle multiple users at once */ 105 # define M_NEEDFROM 000400 /* need arpa-style From: line */ 106 # define M_NEEDDATE 001000 /* need arpa-style Date: line */ 107 # define M_MSGID 002000 /* need Message-Id: field */ 108 # define M_FINAL 004000 /* mailing will effect final delivery */ 109 # define M_USR_UPPER 010000 /* preserve user case distinction */ 110 # define M_HST_UPPER 020000 /* preserve host case distinction */ 111 # define M_FULLNAME 040000 /* want Full-Name field */ 112 113 # define M_ARPAFMT (M_NEEDDATE|M_NEEDFROM|M_NEEDDATE) 114 115 extern MAILER *Mailer[]; 116 117 /* special mailer numbers */ 118 # define M_LOCAL 0 /* local mailer */ 119 # define M_PROG 1 /* program mailer */ 120 /* mailers from 2 on are arbitrary */ 121 122 123 124 /* 125 ** Header structure. 126 ** This structure is used internally to store header items. 127 */ 128 129 struct header 130 { 131 char *h_field; /* the name of the field */ 132 char *h_value; /* the value of that field */ 133 struct header *h_link; /* the next header */ 134 u_short h_flags; /* status bits, see below */ 135 u_long h_mflags; /* m_flags bits needed */ 136 }; 137 138 typedef struct header HDR; 139 140 extern HDR *Header; /* head of header list */ 141 142 /* 143 ** Header information structure. 144 ** Defined in conf.c, this struct declares the header fields 145 ** that have some magic meaning. 146 */ 147 148 struct hdrinfo 149 { 150 char *hi_field; /* the name of the field */ 151 u_short hi_flags; /* status bits, see below */ 152 u_short hi_mflags; /* m_flags needed for this field */ 153 }; 154 155 extern struct hdrinfo HdrInfo[]; 156 157 /* bits for h_flags and hi_flags */ 158 # define H_EOH 00001 /* this field terminates header */ 159 # define H_DELETE 00002 /* don't send this field */ 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 */ 165 166 167 /* 168 ** Rewrite rules. 169 */ 170 171 struct rewrite 172 { 173 char **r_lhs; /* pattern match */ 174 char **r_rhs; /* substitution value */ 175 struct rewrite *r_next;/* next in chain */ 176 }; 177 178 extern struct rewrite *RewriteRules[]; 179 180 # define MATCHANY '\020' /* match one or more tokens */ 181 # define MATCHONE '\021' /* match exactly one token */ 182 # define MATCHCLASS '\022' /* match one token in a class */ 183 184 # define CANONNET '\025' /* canonical net, next token */ 185 # define CANONHOST '\026' /* canonical host, next token */ 186 # define CANONUSER '\027' /* canonical user, next N tokens */ 187 188 189 190 /* 191 ** Symbol table definitions 192 */ 193 194 struct symtab 195 { 196 char *s_name; /* name to be entered */ 197 char s_type; /* general type (see below) */ 198 struct symtab *s_next; /* pointer to next in chain */ 199 union 200 { 201 long sv_class; /* bit-map of word classes */ 202 ADDRESS *sv_addr; /* pointer to address header */ 203 MAILER *sv_mailer; /* pointer to mailer */ 204 char *sv_alias; /* alias */ 205 } s_value; 206 }; 207 208 typedef struct symtab STAB; 209 210 /* symbol types */ 211 # define ST_UNDEF 0 /* undefined type */ 212 # define ST_CLASS 1 /* class map */ 213 # define ST_ADDRESS 2 /* an address in parsed format */ 214 # define ST_MAILER 3 /* a mailer header */ 215 # define ST_ALIAS 4 /* an alias */ 216 217 # define s_class s_value.sv_class 218 # define s_addr s_value.sv_addr 219 # define s_mailer s_value.sv_mailer 220 # define s_alias s_value.sv_alias 221 222 extern STAB *stab(); 223 224 /* opcodes to stab */ 225 # define ST_FIND 0 /* find entry */ 226 # define ST_ENTER 1 /* enter if not there */ 227 228 229 230 231 /* 232 ** Global variables. 233 */ 234 235 extern int ArpaMode; /* ARPANET handling mode */ 236 extern bool FromFlag; /* if set, "From" person is explicit */ 237 extern bool MailBack; /* mail back response on error */ 238 extern bool BerkNet; /* called from BerkNet */ 239 extern bool WriteBack; /* write back response on error */ 240 extern bool NoAlias; /* if set, don't do any aliasing */ 241 extern bool ForceMail; /* if set, mail even if already got a copy */ 242 extern bool MeToo; /* send to the sender also */ 243 extern bool IgnrDot; /* don't let dot end messages */ 244 extern bool SaveFrom; /* save leading "From" lines */ 245 extern bool Verbose; /* set if blow-by-blow desired */ 246 extern int Debug; /* debugging level */ 247 extern int Errors; /* set if errors */ 248 extern int ExitStat; /* exit status code */ 249 extern char InFileName[]; /* input file name */ 250 extern char Transcript[]; /* the transcript file name */ 251 extern ADDRESS From; /* the person it is from */ 252 extern char *To; /* the target person */ 253 extern int HopCount; /* hop count */ 254 extern long CurTime; /* time of this message */ 255 extern char FromLine[]; /* a UNIX-style From line for this message */ 256 extern int AliasLevel; /* depth of aliasing */ 257 258 259 # include <sysexits.h> 260 261 # define setstat(s) { if (ExitStat == EX_OK) ExitStat = s; } 262 263 264 /* useful functions */ 265 266 extern char *newstr(); 267 extern ADDRESS *parse(); 268 extern char *xalloc(); 269 extern char *expand(); 270 extern bool sameaddr(); 271