1 # include <pwd.h> 2 # include "sendmail.h" 3 4 /* 5 ** CONF.C -- Sendmail Configuration Tables. 6 ** 7 ** Defines the configuration of this installation. 8 ** 9 ** Compilation Flags: 10 ** V6 -- running on a version 6 system. This determines 11 ** whether to define certain routines between 12 ** the two systems. If you are running a funny 13 ** system, e.g., V6 with long tty names, this 14 ** should be checked carefully. 15 ** 16 ** Configuration Variables: 17 ** HdrInfo -- a table describing well-known header fields. 18 ** Each entry has the field name and some flags, 19 ** which are described in sendmail.h. 20 ** 21 ** Notes: 22 ** I have tried to put almost all the reasonable 23 ** configuration information into the configuration 24 ** file read at runtime. My intent is that anything 25 ** here is a function of the version of UNIX you 26 ** are running, or is really static -- for example 27 ** the headers are a superset of widely used 28 ** protocols. If you find yourself playing with 29 ** this file too much, you may be making a mistake! 30 */ 31 32 33 34 35 static char SccsId[] = "@(#)conf.c 3.26 08/31/81"; 36 37 38 # include <whoami.h> /* definitions of machine id's at berkeley */ 39 40 41 /* 42 ** Header info table 43 ** Final (null) entry contains the flags used for any other field. 44 ** 45 ** Not all of these are actually handled specially by sendmail 46 ** at this time. They are included as placeholders, to let 47 ** you know that "someday" I intend to have sendmail do 48 ** something with them. 49 */ 50 51 struct hdrinfo HdrInfo[] = 52 { 53 "date", H_CHECK, M_NEEDDATE, 54 "from", H_CHECK, M_NEEDFROM, 55 "original-from", H_ACHECK, 0, /* internal */ 56 "sender", 0, 0, 57 "full-name", H_ACHECK, M_FULLNAME, 58 "to", H_ADDR, 0, 59 "cc", H_ADDR, 0, 60 "bcc", H_ADDR|H_ACHECK, 0, 61 "message-id", H_CHECK, M_MSGID, 62 "message", H_EOH, 0, 63 "text", H_EOH, 0, 64 "posted-date", 0, 0, 65 "return-receipt-to", 0, 0, 66 "received-date", H_CHECK, M_LOCAL, 67 "received-from", H_CHECK, M_LOCAL, 68 "precedence", 0, 0, 69 "via", H_FORCE, 0, 70 NULL, 0, 0, 71 }; 72 73 74 /* 75 ** ARPANET error message numbers. 76 */ 77 78 # ifdef NEWFTP 79 /* these are almost all unchecked */ 80 char Arpa_Info[] = "010"; /* arbitrary info: this is WRONG! */ 81 char Arpa_Enter[] = "354"; /* start mail input */ 82 char Arpa_Mmsg[] = "250"; /* mail successful (MAIL cmd) */ 83 char Arpa_Fmsg[] = "250"; /* mail successful (MLFL cmd) */ 84 char Arpa_Syserr[] = "450"; /* some (transient) system error */ 85 char Arpa_Usrerr[] = "550"; /* some (fatal) user error */ 86 # else NEWFTP 87 char Arpa_Info[] = "050"; /* arbitrary info */ 88 char Arpa_Enter[] = "350"; /* start mail input */ 89 char Arpa_Mmsg[] = "256"; /* mail successful (MAIL cmd) */ 90 char Arpa_Fmsg[] = "250"; /* mail successful (MLFL cmd) */ 91 char Arpa_Syserr[] = "455"; /* some (transient) system error */ 92 char Arpa_Usrerr[] = "450"; /* some (fatal) user error */ 93 # endif NEWFTP 94 95 96 97 98 99 /* 100 ** Location of system files/databases/etc. 101 */ 102 103 char *AliasFile = "/usr/lib/aliases"; /* alias file */ 104 char *ConfFile = "/usr/lib/sendmail.cf"; /* runtime configuration */ 105 char *StatFile = "/usr/eric/mailstats"; /* statistics summary */ 106 107 # ifdef V6 108 /* 109 ** TTYNAME -- return name of terminal. 110 ** 111 ** Parameters: 112 ** fd -- file descriptor to check. 113 ** 114 ** Returns: 115 ** pointer to full path of tty. 116 ** NULL if no tty. 117 ** 118 ** Side Effects: 119 ** none. 120 */ 121 122 char * 123 ttyname(fd) 124 int fd; 125 { 126 register char tn; 127 static char pathn[] = "/dev/ttyx"; 128 129 /* compute the pathname of the controlling tty */ 130 if ((tn = ttyn(fd)) == NULL) 131 { 132 errno = 0; 133 return (NULL); 134 } 135 pathn[8] = tn; 136 return (pathn); 137 } 138 /* 139 ** FDOPEN -- Open a stdio file given an open file descriptor. 140 ** 141 ** This is included here because it is standard in v7, but we 142 ** need it in v6. 143 ** 144 ** Algorithm: 145 ** Open /dev/null to create a descriptor. 146 ** Close that descriptor. 147 ** Copy the existing fd into the descriptor. 148 ** 149 ** Parameters: 150 ** fd -- the open file descriptor. 151 ** type -- "r", "w", or whatever. 152 ** 153 ** Returns: 154 ** The file descriptor it creates. 155 ** 156 ** Side Effects: 157 ** none 158 ** 159 ** Called By: 160 ** deliver 161 ** 162 ** Notes: 163 ** The mode of fd must match "type". 164 */ 165 166 FILE * 167 fdopen(fd, type) 168 int fd; 169 char *type; 170 { 171 register FILE *f; 172 173 f = fopen("/dev/null", type); 174 (void) close(fileno(f)); 175 fileno(f) = fd; 176 return (f); 177 } 178 /* 179 ** INDEX -- Return pointer to character in string 180 ** 181 ** For V7 compatibility. 182 ** 183 ** Parameters: 184 ** s -- a string to scan. 185 ** c -- a character to look for. 186 ** 187 ** Returns: 188 ** If c is in s, returns the address of the first 189 ** instance of c in s. 190 ** NULL if c is not in s. 191 ** 192 ** Side Effects: 193 ** none. 194 */ 195 196 index(s, c) 197 register char *s; 198 register char c; 199 { 200 while (*s != '\0') 201 { 202 if (*s++ == c) 203 return (--s); 204 } 205 return (NULL); 206 } 207 # endif V6 208 /* 209 ** TTYPATH -- Get the path of the user's tty 210 ** 211 ** Returns the pathname of the user's tty. Returns NULL if 212 ** the user is not logged in or if s/he has write permission 213 ** denied. 214 ** 215 ** Parameters: 216 ** none 217 ** 218 ** Returns: 219 ** pathname of the user's tty. 220 ** NULL if not logged in or write permission denied. 221 ** 222 ** Side Effects: 223 ** none. 224 ** 225 ** WARNING: 226 ** Return value is in a local buffer. 227 ** 228 ** Called By: 229 ** savemail 230 */ 231 232 # include <sys/stat.h> 233 234 char * 235 ttypath() 236 { 237 struct stat stbuf; 238 register char *pathn; 239 extern char *ttyname(); 240 extern char *getlogin(); 241 242 /* compute the pathname of the controlling tty */ 243 if ((pathn = ttyname(2)) == NULL && (pathn = ttyname(1)) == NULL && (pathn = ttyname(0)) == NULL) 244 { 245 errno = 0; 246 return (NULL); 247 } 248 249 /* see if we have write permission */ 250 if (stat(pathn, &stbuf) < 0 || !bitset(02, stbuf.st_mode)) 251 { 252 errno = 0; 253 return (NULL); 254 } 255 256 /* see if the user is logged in */ 257 if (getlogin() == NULL) 258 return (NULL); 259 260 /* looks good */ 261 return (pathn); 262 } 263 /* 264 ** CHECKCOMPAT -- check for From and To person compatible. 265 ** 266 ** This routine can be supplied on a per-installation basis 267 ** to determine whether a person is allowed to send a message. 268 ** This allows restriction of certain types of internet 269 ** forwarding or registration of users. 270 ** 271 ** If the hosts are found to be incompatible, an error 272 ** message should be given using "usrerr" and FALSE should 273 ** be returned. 274 ** 275 ** Parameters: 276 ** to -- the person being sent to. 277 ** 278 ** Returns: 279 ** TRUE -- ok to send. 280 ** FALSE -- not ok. 281 ** 282 ** Side Effects: 283 ** none (unless you include the usrerr stuff) 284 */ 285 286 bool 287 checkcompat(to) 288 register ADDRESS *to; 289 { 290 # ifdef lint 291 ADDRESS *x = to; 292 293 to = x; 294 # endif lint 295 296 return (TRUE); 297 } 298