1 /* 2 ** SENDMAIL.H -- Global definitions for sendmail. 3 ** 4 ** @(#)sendmail.h 3.23 08/10/81 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 27 28 29 30 31 /* 32 ** Address structure. 33 ** Addresses are stored internally in this structure. 34 */ 35 36 struct address 37 { 38 char *q_paddr; /* the printname for the address */ 39 char *q_user; /* user name */ 40 char *q_host; /* host name */ 41 short q_mailer; /* mailer to use */ 42 short q_rmailer; /* real mailer (before mapping) */ 43 short q_flags; /* status flags, see below */ 44 char *q_home; /* home dir (local mailer only) */ 45 struct address *q_next; /* chain */ 46 }; 47 48 typedef struct address ADDRESS; 49 50 # define QDONTSEND 000001 /* don't send to this address */ 51 # define QBADADDR 000002 /* this address is verified bad */ 52 53 54 55 56 57 /* 58 ** Mailer definition structure. 59 ** Every mailer known to the system is declared in this 60 ** structure. It defines the pathname of the mailer, some 61 ** flags associated with it, and the argument vector to 62 ** pass to it. The flags are defined in conf.c 63 ** 64 ** The host map is a list of lists of strings. Within each 65 ** list, any host is mapped to the last host in the list. 66 ** This allows multiple names, as well as doing clever 67 ** mail grouping in point-to-point networks. Note: this 68 ** is only used internally, so the apparent host is still 69 ** kept around. 70 ** 71 ** The argument vector is expanded before actual use. Every- 72 ** thing is passed through except for things starting with "$". 73 ** "$x" defines some interpolation, as described in conf.c 74 ** "$x" where x is unknown expands to "x", so use "$$" to get "$". 75 */ 76 77 struct mailer 78 { 79 char *m_name; /* symbolic name of this mailer */ 80 char *m_mailer; /* pathname of the mailer to use */ 81 short m_flags; /* status flags, see below */ 82 short m_badstat; /* the status code to use on unknown error */ 83 char *m_from; /* pattern for From: header */ 84 char **m_argv; /* template argument vector */ 85 ADDRESS *m_sendq; /* list of addresses to send to */ 86 }; 87 88 typedef struct mailer MAILER; 89 90 # define M_FOPT 000001 /* mailer takes picky -f flag */ 91 # define M_ROPT 000002 /* mailer takes picky -r flag */ 92 # define M_QUIET 000004 /* don't print error on bad status */ 93 # define M_RESTR 000010 /* must be daemon to execute */ 94 # define M_NHDR 000020 /* don't insert From line */ 95 # define M_NOHOST 000040 /* ignore host in comparisons */ 96 # define M_STRIPQ 000100 /* strip quote characters from user/host */ 97 # define M_MUSER 000200 /* mailer can handle multiple users at once */ 98 # define M_NEEDFROM 000400 /* need arpa-style From: line */ 99 # define M_NEEDDATE 001000 /* need arpa-style Date: line */ 100 # define M_MSGID 002000 /* need Message-Id: field */ 101 # define M_USR_UPPER 010000 /* preserve user case distinction */ 102 # define M_HST_UPPER 020000 /* preserve host case distinction */ 103 # define M_FULLNAME 040000 /* want Full-Name field */ 104 105 # define M_ARPAFMT (M_NEEDDATE|M_NEEDFROM|M_NEEDDATE) 106 107 extern MAILER *Mailer[]; 108 109 /* special mailer numbers */ 110 # define M_LOCAL 0 /* local mailer */ 111 # define M_PROG 1 /* program mailer */ 112 /* mailers from 2 on are arbitrary */ 113 114 115 116 /* 117 ** Header structure. 118 ** This structure is used internally to store header items. 119 */ 120 121 struct header 122 { 123 char *h_field; /* the name of the field */ 124 char *h_value; /* the value of that field */ 125 struct header *h_link; /* the next header */ 126 short h_flags; /* status bits, see below */ 127 short h_mflags; /* m_flags bits needed */ 128 }; 129 130 typedef struct header HDR; 131 132 extern HDR *Header; /* head of header list */ 133 134 /* 135 ** Header information structure. 136 ** Defined in conf.c, this struct declares the header fields 137 ** that have some magic meaning. 138 */ 139 140 struct hdrinfo 141 { 142 char *hi_field; /* the name of the field */ 143 short hi_flags; /* status bits, see below */ 144 short hi_mflags; /* m_flags needed for this field */ 145 }; 146 147 extern struct hdrinfo HdrInfo[]; 148 149 /* bits for h_flags and hi_flags */ 150 # define H_EOH 00001 /* this field terminates header */ 151 # define H_DELETE 00002 /* don't send this field */ 152 # define H_DEFAULT 00004 /* if another value is found, drop this */ 153 # define H_USED 00010 /* indicates that this has been output */ 154 # define H_CHECK 00020 /* check h_mflags against m_flags */ 155 # define H_ACHECK 00040 /* ditto, but always (not just default) */ 156 157 158 /* 159 ** Rewrite rules. 160 */ 161 162 struct rewrite 163 { 164 char **r_lhs; /* pattern match */ 165 char **r_rhs; /* substitution value */ 166 struct rewrite *r_next;/* next in chain */ 167 }; 168 169 extern struct rewrite *RewriteRules[]; 170 171 # define MATCHANY '\020' /* match one or more tokens */ 172 # define MATCHONE '\021' /* match exactly one token */ 173 # define MATCHCLASS '\022' /* match one token in a class */ 174 175 # define CANONNET '\025' /* canonical net, next token */ 176 # define CANONHOST '\026' /* canonical host, next token */ 177 # define CANONUSER '\027' /* canonical user, next N tokens */ 178 179 180 181 /* 182 ** Symbol table definitions 183 */ 184 185 struct symtab 186 { 187 char *s_name; /* name to be entered */ 188 char s_type; /* general type (see below) */ 189 struct symtab *s_next; /* pointer to next in chain */ 190 union 191 { 192 long sv_class; /* bit-map of word classes */ 193 ADDRESS *sv_addr; /* pointer to address header */ 194 MAILER *sv_mailer; /* pointer to mailer */ 195 char *sv_alias; /* alias */ 196 } s_value; 197 }; 198 199 typedef struct symtab STAB; 200 201 /* symbol types */ 202 # define ST_UNDEF 0 /* undefined type */ 203 # define ST_CLASS 1 /* class map */ 204 # define ST_ADDRESS 2 /* an address in parsed format */ 205 # define ST_MAILER 3 /* a mailer header */ 206 # define ST_ALIAS 4 /* an alias */ 207 208 # define s_class s_value.sv_class 209 # define s_addr s_value.sv_addr 210 # define s_mailer s_value.sv_mailer 211 # define s_alias s_value.sv_alias 212 213 extern STAB *stab(); 214 215 /* opcodes to stab */ 216 # define ST_FIND 0 /* find entry */ 217 # define ST_ENTER 1 /* enter if not there */ 218 219 220 221 222 /* 223 ** Global variables. 224 */ 225 226 extern bool ArpaFmt; /* if set, message is in arpanet fmt */ 227 extern bool FromFlag; /* if set, "From" person is explicit */ 228 extern bool MailBack; /* mail back response on error */ 229 extern bool BerkNet; /* called from BerkNet */ 230 extern bool WriteBack; /* write back response on error */ 231 extern bool NoAlias; /* if set, don't do any aliasing */ 232 extern bool ForceMail; /* if set, mail even if already got a copy */ 233 extern bool MeToo; /* send to the sender also */ 234 extern bool IgnrDot; /* don't let dot end messages */ 235 extern bool SaveFrom; /* save leading "From" lines */ 236 extern bool Verbose; /* set if blow-by-blow desired */ 237 extern int Debug; /* debugging level */ 238 extern int Errors; /* set if errors */ 239 extern int ExitStat; /* exit status code */ 240 extern char InFileName[]; /* input file name */ 241 extern char Transcript[]; /* the transcript file name */ 242 extern ADDRESS From; /* the person it is from */ 243 extern char *To; /* the target person */ 244 extern int HopCount; /* hop count */ 245 extern long CurTime; /* time of this message */ 246 extern char FromLine[]; /* a UNIX-style From line for this message */ 247 extern int AliasLevel; /* depth of aliasing */ 248 249 250 # include <sysexits.h> 251 252 # define setstat(s) { if (ExitStat == EX_OK) ExitStat = s; } 253 254 255 /* useful functions */ 256 257 extern char *newstr(); 258 extern ADDRESS *parse(); 259 extern char *xalloc(); 260 extern char *expand(); 261 extern bool sameaddr(); 262