1: /* 2: ** Sendmail 3: ** Copyright (c) 1983 Eric P. Allman 4: ** Berkeley, California 5: ** 6: ** Copyright (c) 1983 Regents of the University of California. 7: ** All rights reserved. The Berkeley software License Agreement 8: ** specifies the terms and conditions for redistribution. 9: */ 10: 11: #ifndef lint 12: static char SccsId[] = "@(#)collect.c 5.2 (Berkeley) 6/8/85"; 13: #endif not lint 14: 15: # include <errno.h> 16: # include "sendmail.h" 17: 18: /* 19: ** COLLECT -- read & parse message header & make temp file. 20: ** 21: ** Creates a temporary file name and copies the standard 22: ** input to that file. Leading UNIX-style "From" lines are 23: ** stripped off (after important information is extracted). 24: ** 25: ** Parameters: 26: ** sayok -- if set, give an ARPANET style message 27: ** to say we are ready to collect input. 28: ** 29: ** Returns: 30: ** none. 31: ** 32: ** Side Effects: 33: ** Temp file is created and filled. 34: ** The from person may be set. 35: */ 36: 37: collect(sayok) 38: bool sayok; 39: { 40: register FILE *tf; 41: char buf[MAXFIELD+2]; 42: register char *p; 43: extern char *hvalue(); 44: 45: /* 46: ** Create the temp file name and create the file. 47: */ 48: 49: CurEnv->e_df = newstr(queuename(CurEnv, 'd')); 50: if ((tf = dfopen(CurEnv->e_df, "w")) == NULL) 51: { 52: syserr("Cannot create %s", CurEnv->e_df); 53: NoReturn = TRUE; 54: finis(); 55: } 56: (void) chmod(CurEnv->e_df, FileMode); 57: 58: /* 59: ** Tell ARPANET to go ahead. 60: */ 61: 62: if (sayok) 63: message("354", "Enter mail, end with \".\" on a line by itself"); 64: 65: /* 66: ** Try to read a UNIX-style From line 67: */ 68: 69: (void) sfgets(buf, sizeof buf, InChannel); 70: fixcrlf(buf, FALSE); 71: # ifndef NOTUNIX 72: if (!SaveFrom && strncmp(buf, "From ", 5) == 0) 73: { 74: eatfrom(buf); 75: (void) sfgets(buf, sizeof buf, InChannel); 76: fixcrlf(buf, FALSE); 77: } 78: # endif NOTUNIX 79: 80: /* 81: ** Copy InChannel to temp file & do message editing. 82: ** To keep certain mailers from getting confused, 83: ** and to keep the output clean, lines that look 84: ** like UNIX "From" lines are deleted in the header. 85: */ 86: 87: do 88: { 89: int c; 90: extern bool isheader(); 91: 92: /* drop out on error */ 93: if (ferror(InChannel)) 94: break; 95: 96: /* if the line is too long, throw the rest away */ 97: if (index(buf, '\n') == NULL) 98: { 99: while ((c = getc(InChannel)) != '\n' && c != EOF) 100: continue; 101: /* give an error? */ 102: } 103: 104: fixcrlf(buf, TRUE); 105: 106: /* see if the header is over */ 107: if (!isheader(buf)) 108: break; 109: 110: /* get the rest of this field */ 111: while ((c = getc(InChannel)) == ' ' || c == '\t') 112: { 113: p = &buf[strlen(buf)]; 114: *p++ = '\n'; 115: *p++ = c; 116: if (sfgets(p, MAXFIELD - (p - buf), InChannel) == NULL) 117: break; 118: fixcrlf(p, TRUE); 119: } 120: if (!feof(InChannel) && !ferror(InChannel)) 121: (void) ungetc(c, InChannel); 122: 123: CurEnv->e_msgsize += strlen(buf); 124: 125: /* 126: ** Snarf header away. 127: */ 128: 129: if (bitset(H_EOH, chompheader(buf, FALSE))) 130: break; 131: } while (sfgets(buf, MAXFIELD, InChannel) != NULL); 132: 133: # ifdef DEBUG 134: if (tTd(30, 1)) 135: printf("EOH\n"); 136: # endif DEBUG 137: 138: /* throw away a blank line */ 139: if (buf[0] == '\0') 140: (void) sfgets(buf, MAXFIELD, InChannel); 141: 142: /* 143: ** Collect the body of the message. 144: */ 145: 146: do 147: { 148: register char *bp = buf; 149: 150: fixcrlf(buf, TRUE); 151: 152: /* check for end-of-message */ 153: if (!IgnrDot && buf[0] == '.' && (buf[1] == '\n' || buf[1] == '\0')) 154: break; 155: 156: /* check for transparent dot */ 157: if (OpMode == MD_SMTP && !IgnrDot && bp[0] == '.' && bp[1] == '.') 158: bp++; 159: 160: /* 161: ** Figure message length, output the line to the temp 162: ** file, and insert a newline if missing. 163: */ 164: 165: CurEnv->e_msgsize += strlen(bp) + 1; 166: fputs(bp, tf); 167: fputs("\n", tf); 168: if (ferror(tf)) 169: tferror(tf); 170: } while (sfgets(buf, MAXFIELD, InChannel) != NULL); 171: if (fflush(tf) != 0) 172: tferror(tf); 173: (void) fclose(tf); 174: 175: /* An EOF when running SMTP is an error */ 176: if ((feof(InChannel) || ferror(InChannel)) && OpMode == MD_SMTP) 177: { 178: syserr("collect: unexpected close, from=%s", CurEnv->e_from.q_paddr); 179: 180: /* don't return an error indication */ 181: CurEnv->e_to = NULL; 182: CurEnv->e_flags &= ~EF_FATALERRS; 183: 184: /* and don't try to deliver the partial message either */ 185: finis(); 186: } 187: 188: /* 189: ** Find out some information from the headers. 190: ** Examples are who is the from person & the date. 191: */ 192: 193: eatheader(CurEnv); 194: 195: /* 196: ** Add an Apparently-To: line if we have no recipient lines. 197: */ 198: 199: if (hvalue("to") == NULL && hvalue("cc") == NULL && 200: hvalue("bcc") == NULL && hvalue("apparently-to") == NULL) 201: { 202: register ADDRESS *q; 203: 204: /* create an Apparently-To: field */ 205: /* that or reject the message.... */ 206: for (q = CurEnv->e_sendqueue; q != NULL; q = q->q_next) 207: { 208: if (q->q_alias != NULL) 209: continue; 210: # ifdef DEBUG 211: if (tTd(30, 3)) 212: printf("Adding Apparently-To: %s\n", q->q_paddr); 213: # endif DEBUG 214: addheader("apparently-to", q->q_paddr, CurEnv); 215: } 216: } 217: 218: if ((CurEnv->e_dfp = fopen(CurEnv->e_df, "r")) == NULL) 219: syserr("Cannot reopen %s", CurEnv->e_df); 220: } 221: /* 222: ** TFERROR -- signal error on writing the temporary file. 223: ** 224: ** Parameters: 225: ** tf -- the file pointer for the temporary file. 226: ** 227: ** Returns: 228: ** none. 229: ** 230: ** Side Effects: 231: ** Gives an error message. 232: ** Arranges for following output to go elsewhere. 233: */ 234: 235: tferror(tf) 236: FILE *tf; 237: { 238: if (errno == ENOSPC) 239: { 240: (void) freopen(CurEnv->e_df, "w", tf); 241: fputs("\nMAIL DELETED BECAUSE OF LACK OF DISK SPACE\n\n", tf); 242: usrerr("452 Out of disk space for temp file"); 243: } 244: else 245: syserr("collect: Cannot write %s", CurEnv->e_df); 246: (void) freopen("/dev/null", "w", tf); 247: } 248: /* 249: ** EATFROM -- chew up a UNIX style from line and process 250: ** 251: ** This does indeed make some assumptions about the format 252: ** of UNIX messages. 253: ** 254: ** Parameters: 255: ** fm -- the from line. 256: ** 257: ** Returns: 258: ** none. 259: ** 260: ** Side Effects: 261: ** extracts what information it can from the header, 262: ** such as the date. 263: */ 264: 265: # ifndef NOTUNIX 266: 267: char *DowList[] = 268: { 269: "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", NULL 270: }; 271: 272: char *MonthList[] = 273: { 274: "Jan", "Feb", "Mar", "Apr", "May", "Jun", 275: "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", 276: NULL 277: }; 278: 279: eatfrom(fm) 280: char *fm; 281: { 282: register char *p; 283: register char **dt; 284: 285: # ifdef DEBUG 286: if (tTd(30, 2)) 287: printf("eatfrom(%s)\n", fm); 288: # endif DEBUG 289: 290: /* find the date part */ 291: p = fm; 292: while (*p != '\0') 293: { 294: /* skip a word */ 295: while (*p != '\0' && *p != ' ') 296: p++; 297: while (*p == ' ') 298: p++; 299: if (!isupper(*p) || p[3] != ' ' || p[13] != ':' || p[16] != ':') 300: continue; 301: 302: /* we have a possible date */ 303: for (dt = DowList; *dt != NULL; dt++) 304: if (strncmp(*dt, p, 3) == 0) 305: break; 306: if (*dt == NULL) 307: continue; 308: 309: for (dt = MonthList; *dt != NULL; dt++) 310: if (strncmp(*dt, &p[4], 3) == 0) 311: break; 312: if (*dt != NULL) 313: break; 314: } 315: 316: if (*p != NULL) 317: { 318: char *q; 319: extern char *arpadate(); 320: 321: /* we have found a date */ 322: q = xalloc(25); 323: (void) strncpy(q, p, 25); 324: q[24] = '\0'; 325: define('d', q, CurEnv); 326: q = arpadate(q); 327: define('a', newstr(q), CurEnv); 328: } 329: } 330: 331: # endif NOTUNIX