1 # include <errno.h> 2 # include "sendmail.h" 3 4 SCCSID(@(#)collect.c 4.2 11/13/83); 5 6 /* 7 ** COLLECT -- read & parse message header & make temp file. 8 ** 9 ** Creates a temporary file name and copies the standard 10 ** input to that file. Leading UNIX-style "From" lines are 11 ** stripped off (after important information is extracted). 12 ** 13 ** Parameters: 14 ** sayok -- if set, give an ARPANET style message 15 ** to say we are ready to collect input. 16 ** 17 ** Returns: 18 ** none. 19 ** 20 ** Side Effects: 21 ** Temp file is created and filled. 22 ** The from person may be set. 23 */ 24 25 collect(sayok) 26 bool sayok; 27 { 28 register FILE *tf; 29 char buf[MAXFIELD+2]; 30 register char *p; 31 extern char *hvalue(); 32 33 /* 34 ** Create the temp file name and create the file. 35 */ 36 37 CurEnv->e_df = newstr(queuename(CurEnv, 'd')); 38 if ((tf = dfopen(CurEnv->e_df, "w")) == NULL) 39 { 40 syserr("Cannot create %s", CurEnv->e_df); 41 NoReturn = TRUE; 42 finis(); 43 } 44 (void) chmod(CurEnv->e_df, FileMode); 45 46 /* 47 ** Tell ARPANET to go ahead. 48 */ 49 50 if (sayok) 51 message("354", "Enter mail, end with \".\" on a line by itself"); 52 53 /* 54 ** Try to read a UNIX-style From line 55 */ 56 57 (void) sfgets(buf, sizeof buf, InChannel); 58 fixcrlf(buf, FALSE); 59 # ifndef NOTUNIX 60 if (!SaveFrom && strncmp(buf, "From ", 5) == 0) 61 { 62 eatfrom(buf); 63 (void) sfgets(buf, sizeof buf, InChannel); 64 fixcrlf(buf, FALSE); 65 } 66 # endif NOTUNIX 67 68 /* 69 ** Copy InChannel to temp file & do message editing. 70 ** To keep certain mailers from getting confused, 71 ** and to keep the output clean, lines that look 72 ** like UNIX "From" lines are deleted in the header. 73 */ 74 75 do 76 { 77 int c; 78 extern bool isheader(); 79 80 /* if the line is too long, throw the rest away */ 81 if (index(buf, '\n') == NULL) 82 { 83 while ((c = getc(InChannel)) != '\n' && c != EOF) 84 continue; 85 /* give an error? */ 86 } 87 88 fixcrlf(buf, TRUE); 89 90 /* see if the header is over */ 91 if (!isheader(buf)) 92 break; 93 94 /* get the rest of this field */ 95 while ((c = getc(InChannel)) == ' ' || c == '\t') 96 { 97 p = &buf[strlen(buf)]; 98 *p++ = '\n'; 99 *p++ = c; 100 if (sfgets(p, MAXFIELD - (p - buf), InChannel) == NULL) 101 break; 102 fixcrlf(p, TRUE); 103 } 104 if (!feof(InChannel)) 105 (void) ungetc(c, InChannel); 106 107 CurEnv->e_msgsize += strlen(buf); 108 109 /* 110 ** Snarf header away. 111 */ 112 113 if (bitset(H_EOH, chompheader(buf, FALSE))) 114 break; 115 } while (sfgets(buf, MAXFIELD, InChannel) != NULL); 116 117 # ifdef DEBUG 118 if (tTd(30, 1)) 119 printf("EOH\n"); 120 # endif DEBUG 121 122 /* throw away a blank line */ 123 if (buf[0] == '\0') 124 (void) sfgets(buf, MAXFIELD, InChannel); 125 126 /* 127 ** Collect the body of the message. 128 */ 129 130 do 131 { 132 register char *bp = buf; 133 134 fixcrlf(buf, TRUE); 135 136 /* check for end-of-message */ 137 if (!IgnrDot && buf[0] == '.' && (buf[1] == '\n' || buf[1] == '\0')) 138 break; 139 140 /* check for transparent dot */ 141 if (OpMode == MD_SMTP && !IgnrDot && bp[0] == '.' && bp[1] == '.') 142 bp++; 143 144 /* 145 ** Figure message length, output the line to the temp 146 ** file, and insert a newline if missing. 147 */ 148 149 CurEnv->e_msgsize += strlen(bp) + 1; 150 fputs(bp, tf); 151 fputs("\n", tf); 152 if (ferror(tf)) 153 tferror(tf); 154 } while (sfgets(buf, MAXFIELD, InChannel) != NULL); 155 if (fflush(tf) != 0) 156 tferror(tf); 157 (void) fclose(tf); 158 159 /* An EOF when running SMTP is an error */ 160 if (feof(InChannel) && OpMode == MD_SMTP) 161 syserr("collect: unexpected close"); 162 163 /* 164 ** Find out some information from the headers. 165 ** Examples are who is the from person & the date. 166 */ 167 168 eatheader(CurEnv); 169 170 /* 171 ** Add an Apparently-To: line if we have no recipient lines. 172 */ 173 174 if (hvalue("to") == NULL && hvalue("cc") == NULL && 175 hvalue("bcc") == NULL && hvalue("apparently-to") == NULL) 176 { 177 register ADDRESS *q; 178 179 /* create an Apparently-To: field */ 180 /* that or reject the message.... */ 181 for (q = CurEnv->e_sendqueue; q != NULL; q = q->q_next) 182 { 183 if (q->q_alias != NULL) 184 continue; 185 # ifdef DEBUG 186 if (tTd(30, 3)) 187 printf("Adding Apparently-To: %s\n", q->q_paddr); 188 # endif DEBUG 189 addheader("apparently-to", q->q_paddr, CurEnv); 190 } 191 } 192 193 if ((CurEnv->e_dfp = fopen(CurEnv->e_df, "r")) == NULL) 194 syserr("Cannot reopen %s", CurEnv->e_df); 195 } 196 /* 197 ** TFERROR -- signal error on writing the temporary file. 198 ** 199 ** Parameters: 200 ** tf -- the file pointer for the temporary file. 201 ** 202 ** Returns: 203 ** none. 204 ** 205 ** Side Effects: 206 ** Gives an error message. 207 ** Arranges for following output to go elsewhere. 208 */ 209 210 tferror(tf) 211 FILE *tf; 212 { 213 if (errno == ENOSPC) 214 { 215 (void) freopen(CurEnv->e_df, "w", tf); 216 fputs("\nMAIL DELETED BECAUSE OF LACK OF DISK SPACE\n\n", tf); 217 usrerr("452 Out of disk space for temp file"); 218 } 219 else 220 syserr("collect: Cannot write %s", CurEnv->e_df); 221 (void) freopen("/dev/null", "w", tf); 222 } 223 /* 224 ** EATFROM -- chew up a UNIX style from line and process 225 ** 226 ** This does indeed make some assumptions about the format 227 ** of UNIX messages. 228 ** 229 ** Parameters: 230 ** fm -- the from line. 231 ** 232 ** Returns: 233 ** none. 234 ** 235 ** Side Effects: 236 ** extracts what information it can from the header, 237 ** such as the date. 238 */ 239 240 # ifndef NOTUNIX 241 242 char *DowList[] = 243 { 244 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", NULL 245 }; 246 247 char *MonthList[] = 248 { 249 "Jan", "Feb", "Mar", "Apr", "May", "Jun", 250 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", 251 NULL 252 }; 253 254 eatfrom(fm) 255 char *fm; 256 { 257 register char *p; 258 register char **dt; 259 260 # ifdef DEBUG 261 if (tTd(30, 2)) 262 printf("eatfrom(%s)\n", fm); 263 # endif DEBUG 264 265 /* find the date part */ 266 p = fm; 267 while (*p != '\0') 268 { 269 /* skip a word */ 270 while (*p != '\0' && *p != ' ') 271 *p++; 272 while (*p == ' ') 273 *p++; 274 if (!isupper(*p) || p[3] != ' ' || p[13] != ':' || p[16] != ':') 275 continue; 276 277 /* we have a possible date */ 278 for (dt = DowList; *dt != NULL; dt++) 279 if (strncmp(*dt, p, 3) == 0) 280 break; 281 if (*dt == NULL) 282 continue; 283 284 for (dt = MonthList; *dt != NULL; dt++) 285 if (strncmp(*dt, &p[4], 3) == 0) 286 break; 287 if (*dt != NULL) 288 break; 289 } 290 291 if (*p != NULL) 292 { 293 char *q; 294 extern char *arpadate(); 295 296 /* we have found a date */ 297 q = xalloc(25); 298 strncpy(q, p, 25); 299 q[24] = '\0'; 300 define('d', q, CurEnv); 301 q = arpadate(q); 302 define('a', newstr(q), CurEnv); 303 } 304 } 305 306 # endif NOTUNIX 307