1 /* 2 * Copyright (c) 1998-2006 Sendmail, Inc. and its suppliers. 3 * All rights reserved. 4 * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved. 5 * Copyright (c) 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * By using this file, you agree to the terms and conditions set 9 * forth in the LICENSE file which can be found at the top level of 10 * the sendmail distribution. 11 * 12 */ 13 14 #pragma ident "%Z%%M% %I% %E% SMI" 15 16 #include <sendmail.h> 17 18 SM_RCSID("@(#)$Id: collect.c,v 8.273 2006/03/31 18:51:47 ca Exp $") 19 20 static void eatfrom __P((char *volatile, ENVELOPE *)); 21 static void collect_doheader __P((ENVELOPE *)); 22 static SM_FILE_T *collect_dfopen __P((ENVELOPE *)); 23 static SM_FILE_T *collect_eoh __P((ENVELOPE *, int, int)); 24 25 /* 26 ** COLLECT_EOH -- end-of-header processing in collect() 27 ** 28 ** Called by collect() when it encounters the blank line 29 ** separating the header from the message body, or when it 30 ** encounters EOF in a message that contains only a header. 31 ** 32 ** Parameters: 33 ** e -- envelope 34 ** numhdrs -- number of headers 35 ** hdrslen -- length of headers 36 ** 37 ** Results: 38 ** NULL, or handle to open data file 39 ** 40 ** Side Effects: 41 ** end-of-header check ruleset is invoked. 42 ** envelope state is updated. 43 ** headers may be added and deleted. 44 ** selects the queue. 45 ** opens the data file. 46 */ 47 48 static SM_FILE_T * 49 collect_eoh(e, numhdrs, hdrslen) 50 ENVELOPE *e; 51 int numhdrs; 52 int hdrslen; 53 { 54 char hnum[16]; 55 char hsize[16]; 56 57 /* call the end-of-header check ruleset */ 58 (void) sm_snprintf(hnum, sizeof hnum, "%d", numhdrs); 59 (void) sm_snprintf(hsize, sizeof hsize, "%d", hdrslen); 60 if (tTd(30, 10)) 61 sm_dprintf("collect: rscheck(\"check_eoh\", \"%s $| %s\")\n", 62 hnum, hsize); 63 (void) rscheck("check_eoh", hnum, hsize, e, RSF_UNSTRUCTURED|RSF_COUNT, 64 3, NULL, e->e_id); 65 66 /* 67 ** Process the header, 68 ** select the queue, open the data file. 69 */ 70 71 collect_doheader(e); 72 return collect_dfopen(e); 73 } 74 75 /* 76 ** COLLECT_DOHEADER -- process header in collect() 77 ** 78 ** Called by collect() after it has finished parsing the header, 79 ** but before it selects the queue and creates the data file. 80 ** The results of processing the header will affect queue selection. 81 ** 82 ** Parameters: 83 ** e -- envelope 84 ** 85 ** Results: 86 ** none. 87 ** 88 ** Side Effects: 89 ** envelope state is updated. 90 ** headers may be added and deleted. 91 */ 92 93 static void 94 collect_doheader(e) 95 ENVELOPE *e; 96 { 97 /* 98 ** Find out some information from the headers. 99 ** Examples are who is the from person & the date. 100 */ 101 102 eatheader(e, true, false); 103 104 if (GrabTo && e->e_sendqueue == NULL) 105 usrerr("No recipient addresses found in header"); 106 107 /* 108 ** If we have a Return-Receipt-To:, turn it into a DSN. 109 */ 110 111 if (RrtImpliesDsn && hvalue("return-receipt-to", e->e_header) != NULL) 112 { 113 ADDRESS *q; 114 115 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 116 if (!bitset(QHASNOTIFY, q->q_flags)) 117 q->q_flags |= QHASNOTIFY|QPINGONSUCCESS; 118 } 119 120 /* 121 ** Add an appropriate recipient line if we have none. 122 */ 123 124 if (hvalue("to", e->e_header) != NULL || 125 hvalue("cc", e->e_header) != NULL || 126 hvalue("apparently-to", e->e_header) != NULL) 127 { 128 /* have a valid recipient header -- delete Bcc: headers */ 129 e->e_flags |= EF_DELETE_BCC; 130 } 131 else if (hvalue("bcc", e->e_header) == NULL) 132 { 133 /* no valid recipient headers */ 134 register ADDRESS *q; 135 char *hdr = NULL; 136 137 /* create a recipient field */ 138 switch (NoRecipientAction) 139 { 140 case NRA_ADD_APPARENTLY_TO: 141 hdr = "Apparently-To"; 142 break; 143 144 case NRA_ADD_TO: 145 hdr = "To"; 146 break; 147 148 case NRA_ADD_BCC: 149 addheader("Bcc", " ", 0, e); 150 break; 151 152 case NRA_ADD_TO_UNDISCLOSED: 153 addheader("To", "undisclosed-recipients:;", 0, e); 154 break; 155 } 156 157 if (hdr != NULL) 158 { 159 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 160 { 161 if (q->q_alias != NULL) 162 continue; 163 if (tTd(30, 3)) 164 sm_dprintf("Adding %s: %s\n", 165 hdr, q->q_paddr); 166 addheader(hdr, q->q_paddr, 0, e); 167 } 168 } 169 } 170 } 171 172 /* 173 ** COLLECT_DFOPEN -- open the message data file 174 ** 175 ** Called by collect() after it has finished processing the header. 176 ** Queue selection occurs at this point, possibly based on the 177 ** envelope's recipient list and on header information. 178 ** 179 ** Parameters: 180 ** e -- envelope 181 ** 182 ** Results: 183 ** NULL, or a pointer to an open data file, 184 ** into which the message body will be written by collect(). 185 ** 186 ** Side Effects: 187 ** Calls syserr, sets EF_FATALERRS and returns NULL 188 ** if there is insufficient disk space. 189 ** Aborts process if data file could not be opened. 190 ** Otherwise, the queue is selected, 191 ** e->e_{dfino,dfdev,msgsize,flags} are updated, 192 ** and a pointer to an open data file is returned. 193 */ 194 195 static SM_FILE_T * 196 collect_dfopen(e) 197 ENVELOPE *e; 198 { 199 MODE_T oldumask = 0; 200 int dfd; 201 struct stat stbuf; 202 SM_FILE_T *df; 203 char *dfname; 204 205 if (!setnewqueue(e)) 206 return NULL; 207 208 dfname = queuename(e, DATAFL_LETTER); 209 if (bitset(S_IWGRP, QueueFileMode)) 210 oldumask = umask(002); 211 df = bfopen(dfname, QueueFileMode, DataFileBufferSize, 212 SFF_OPENASROOT); 213 if (bitset(S_IWGRP, QueueFileMode)) 214 (void) umask(oldumask); 215 if (df == NULL) 216 { 217 syserr("@Cannot create %s", dfname); 218 e->e_flags |= EF_NO_BODY_RETN; 219 flush_errors(true); 220 finis(false, true, ExitStat); 221 /* NOTREACHED */ 222 } 223 dfd = sm_io_getinfo(df, SM_IO_WHAT_FD, NULL); 224 if (dfd < 0 || fstat(dfd, &stbuf) < 0) 225 e->e_dfino = -1; 226 else 227 { 228 e->e_dfdev = stbuf.st_dev; 229 e->e_dfino = stbuf.st_ino; 230 } 231 e->e_flags |= EF_HAS_DF; 232 return df; 233 } 234 235 /* 236 ** COLLECT -- read & parse message header & make temp file. 237 ** 238 ** Creates a temporary file name and copies the standard 239 ** input to that file. Leading UNIX-style "From" lines are 240 ** stripped off (after important information is extracted). 241 ** 242 ** Parameters: 243 ** fp -- file to read. 244 ** smtpmode -- if set, we are running SMTP: give an RFC821 245 ** style message to say we are ready to collect 246 ** input, and never ignore a single dot to mean 247 ** end of message. 248 ** hdrp -- the location to stash the header. 249 ** e -- the current envelope. 250 ** rsetsize -- reset e_msgsize? 251 ** 252 ** Returns: 253 ** none. 254 ** 255 ** Side Effects: 256 ** If successful, 257 ** - Data file is created and filled, and e->e_dfp is set. 258 ** - The from person may be set. 259 ** If the "enough disk space" check fails, 260 ** - syserr is called. 261 ** - e->e_dfp is NULL. 262 ** - e->e_flags & EF_FATALERRS is set. 263 ** - collect() returns. 264 ** If data file cannot be created, the process is terminated. 265 */ 266 267 /* values for input state machine */ 268 #define IS_NORM 0 /* middle of line */ 269 #define IS_BOL 1 /* beginning of line */ 270 #define IS_DOT 2 /* read a dot at beginning of line */ 271 #define IS_DOTCR 3 /* read ".\r" at beginning of line */ 272 #define IS_CR 4 /* read a carriage return */ 273 274 /* values for message state machine */ 275 #define MS_UFROM 0 /* reading Unix from line */ 276 #define MS_HEADER 1 /* reading message header */ 277 #define MS_BODY 2 /* reading message body */ 278 #define MS_DISCARD 3 /* discarding rest of message */ 279 280 void 281 collect(fp, smtpmode, hdrp, e, rsetsize) 282 SM_FILE_T *fp; 283 bool smtpmode; 284 HDR **hdrp; 285 register ENVELOPE *e; 286 bool rsetsize; 287 { 288 register SM_FILE_T *df; 289 bool ignrdot; 290 int dbto; 291 register char *bp; 292 int c; 293 bool inputerr; 294 bool headeronly; 295 char *buf; 296 int buflen; 297 int istate; 298 int mstate; 299 int hdrslen; 300 int numhdrs; 301 int afd; 302 unsigned char *pbp; 303 unsigned char peekbuf[8]; 304 char bufbuf[MAXLINE]; 305 306 df = NULL; 307 ignrdot = smtpmode ? false : IgnrDot; 308 309 /* timeout for I/O functions is in milliseconds */ 310 dbto = smtpmode ? ((int) TimeOuts.to_datablock * 1000) 311 : SM_TIME_FOREVER; 312 sm_io_setinfo(fp, SM_IO_WHAT_TIMEOUT, &dbto); 313 c = SM_IO_EOF; 314 inputerr = false; 315 headeronly = hdrp != NULL; 316 hdrslen = 0; 317 numhdrs = 0; 318 HasEightBits = false; 319 buf = bp = bufbuf; 320 buflen = sizeof bufbuf; 321 pbp = peekbuf; 322 istate = IS_BOL; 323 mstate = SaveFrom ? MS_HEADER : MS_UFROM; 324 325 /* 326 ** Tell ARPANET to go ahead. 327 */ 328 329 if (smtpmode) 330 message("354 Enter mail, end with \".\" on a line by itself"); 331 332 /* simulate an I/O timeout when used as sink */ 333 if (tTd(83, 101)) 334 sleep(319); 335 336 if (tTd(30, 2)) 337 sm_dprintf("collect\n"); 338 339 /* 340 ** Read the message. 341 ** 342 ** This is done using two interleaved state machines. 343 ** The input state machine is looking for things like 344 ** hidden dots; the message state machine is handling 345 ** the larger picture (e.g., header versus body). 346 */ 347 348 if (rsetsize) 349 e->e_msgsize = 0; 350 for (;;) 351 { 352 if (tTd(30, 35)) 353 sm_dprintf("top, istate=%d, mstate=%d\n", istate, 354 mstate); 355 for (;;) 356 { 357 if (pbp > peekbuf) 358 c = *--pbp; 359 else 360 { 361 while (!sm_io_eof(fp) && !sm_io_error(fp)) 362 { 363 errno = 0; 364 c = sm_io_getc(fp, SM_TIME_DEFAULT); 365 if (c == SM_IO_EOF && errno == EINTR) 366 { 367 /* Interrupted, retry */ 368 sm_io_clearerr(fp); 369 continue; 370 } 371 372 /* timeout? */ 373 if (c == SM_IO_EOF && errno == EAGAIN 374 && smtpmode) 375 { 376 /* 377 ** Override e_message in 378 ** usrerr() as this is the 379 ** reason for failure that 380 ** should be logged for 381 ** undelivered recipients. 382 */ 383 384 e->e_message = NULL; 385 errno = 0; 386 inputerr = true; 387 goto readabort; 388 } 389 break; 390 } 391 if (TrafficLogFile != NULL && !headeronly) 392 { 393 if (istate == IS_BOL) 394 (void) sm_io_fprintf(TrafficLogFile, 395 SM_TIME_DEFAULT, 396 "%05d <<< ", 397 (int) CurrentPid); 398 if (c == SM_IO_EOF) 399 (void) sm_io_fprintf(TrafficLogFile, 400 SM_TIME_DEFAULT, 401 "[EOF]\n"); 402 else 403 (void) sm_io_putc(TrafficLogFile, 404 SM_TIME_DEFAULT, 405 c); 406 } 407 if (c == SM_IO_EOF) 408 goto readerr; 409 if (SevenBitInput) 410 c &= 0x7f; 411 else 412 HasEightBits |= bitset(0x80, c); 413 } 414 if (tTd(30, 94)) 415 sm_dprintf("istate=%d, c=%c (0x%x)\n", 416 istate, (char) c, c); 417 switch (istate) 418 { 419 case IS_BOL: 420 if (c == '.') 421 { 422 istate = IS_DOT; 423 continue; 424 } 425 break; 426 427 case IS_DOT: 428 if (c == '\n' && !ignrdot && 429 !bitset(EF_NL_NOT_EOL, e->e_flags)) 430 goto readerr; 431 else if (c == '\r' && 432 !bitset(EF_CRLF_NOT_EOL, e->e_flags)) 433 { 434 istate = IS_DOTCR; 435 continue; 436 } 437 else if (ignrdot || 438 (c != '.' && 439 OpMode != MD_SMTP && 440 OpMode != MD_DAEMON && 441 OpMode != MD_ARPAFTP)) 442 443 { 444 SM_ASSERT(pbp < peekbuf + 445 sizeof(peekbuf)); 446 *pbp++ = c; 447 c = '.'; 448 } 449 break; 450 451 case IS_DOTCR: 452 if (c == '\n' && !ignrdot) 453 goto readerr; 454 else 455 { 456 /* push back the ".\rx" */ 457 SM_ASSERT(pbp < peekbuf + 458 sizeof(peekbuf)); 459 *pbp++ = c; 460 if (OpMode != MD_SMTP && 461 OpMode != MD_DAEMON && 462 OpMode != MD_ARPAFTP) 463 { 464 SM_ASSERT(pbp < peekbuf + 465 sizeof(peekbuf)); 466 *pbp++ = '\r'; 467 c = '.'; 468 } 469 else 470 c = '\r'; 471 } 472 break; 473 474 case IS_CR: 475 if (c == '\n') 476 istate = IS_BOL; 477 else 478 { 479 (void) sm_io_ungetc(fp, SM_TIME_DEFAULT, 480 c); 481 c = '\r'; 482 istate = IS_NORM; 483 } 484 goto bufferchar; 485 } 486 487 if (c == '\r' && !bitset(EF_CRLF_NOT_EOL, e->e_flags)) 488 { 489 istate = IS_CR; 490 continue; 491 } 492 else if (c == '\n' && !bitset(EF_NL_NOT_EOL, 493 e->e_flags)) 494 istate = IS_BOL; 495 else 496 istate = IS_NORM; 497 498 bufferchar: 499 if (!headeronly) 500 { 501 /* no overflow? */ 502 if (e->e_msgsize >= 0) 503 { 504 e->e_msgsize++; 505 if (MaxMessageSize > 0 && 506 !bitset(EF_TOOBIG, e->e_flags) && 507 e->e_msgsize > MaxMessageSize) 508 e->e_flags |= EF_TOOBIG; 509 } 510 } 511 switch (mstate) 512 { 513 case MS_BODY: 514 /* just put the character out */ 515 if (!bitset(EF_TOOBIG, e->e_flags)) 516 (void) sm_io_putc(df, SM_TIME_DEFAULT, 517 c); 518 519 /* FALLTHROUGH */ 520 521 case MS_DISCARD: 522 continue; 523 } 524 525 SM_ASSERT(mstate == MS_UFROM || mstate == MS_HEADER); 526 527 /* header -- buffer up */ 528 if (bp >= &buf[buflen - 2]) 529 { 530 char *obuf; 531 532 /* out of space for header */ 533 obuf = buf; 534 if (buflen < MEMCHUNKSIZE) 535 buflen *= 2; 536 else 537 buflen += MEMCHUNKSIZE; 538 if (buflen <= 0) 539 { 540 sm_syslog(LOG_NOTICE, e->e_id, 541 "header overflow from %s during message collect", 542 CURHOSTNAME); 543 errno = 0; 544 e->e_flags |= EF_CLRQUEUE; 545 e->e_status = "5.6.0"; 546 usrerrenh(e->e_status, 547 "552 Headers too large"); 548 goto discard; 549 } 550 buf = xalloc(buflen); 551 memmove(buf, obuf, bp - obuf); 552 bp = &buf[bp - obuf]; 553 if (obuf != bufbuf) 554 sm_free(obuf); /* XXX */ 555 } 556 557 /* 558 ** XXX Notice: the logic here is broken. 559 ** An input to sendmail that doesn't contain a 560 ** header but starts immediately with the body whose 561 ** first line contain characters which match the 562 ** following "if" will cause problems: those 563 ** characters will NOT appear in the output... 564 ** Do we care? 565 */ 566 567 if (c >= 0200 && c <= 0237) 568 { 569 #if 0 /* causes complaints -- figure out something for 8.n+1 */ 570 usrerr("Illegal character 0x%x in header", c); 571 #else /* 0 */ 572 /* EMPTY */ 573 #endif /* 0 */ 574 } 575 else if (c != '\0') 576 { 577 *bp++ = c; 578 ++hdrslen; 579 if (!headeronly && 580 MaxHeadersLength > 0 && 581 hdrslen > MaxHeadersLength) 582 { 583 sm_syslog(LOG_NOTICE, e->e_id, 584 "headers too large (%d max) from %s during message collect", 585 MaxHeadersLength, 586 CURHOSTNAME); 587 errno = 0; 588 e->e_flags |= EF_CLRQUEUE; 589 e->e_status = "5.6.0"; 590 usrerrenh(e->e_status, 591 "552 Headers too large (%d max)", 592 MaxHeadersLength); 593 discard: 594 mstate = MS_DISCARD; 595 } 596 } 597 if (istate == IS_BOL) 598 break; 599 } 600 *bp = '\0'; 601 602 nextstate: 603 if (tTd(30, 35)) 604 sm_dprintf("nextstate, istate=%d, mstate=%d, line = \"%s\"\n", 605 istate, mstate, buf); 606 switch (mstate) 607 { 608 case MS_UFROM: 609 mstate = MS_HEADER; 610 #ifndef NOTUNIX 611 if (strncmp(buf, "From ", 5) == 0) 612 { 613 bp = buf; 614 eatfrom(buf, e); 615 continue; 616 } 617 #endif /* ! NOTUNIX */ 618 /* FALLTHROUGH */ 619 620 case MS_HEADER: 621 if (!isheader(buf)) 622 { 623 mstate = MS_BODY; 624 goto nextstate; 625 } 626 627 /* check for possible continuation line */ 628 do 629 { 630 sm_io_clearerr(fp); 631 errno = 0; 632 c = sm_io_getc(fp, SM_TIME_DEFAULT); 633 634 /* timeout? */ 635 if (c == SM_IO_EOF && errno == EAGAIN 636 && smtpmode) 637 { 638 /* 639 ** Override e_message in 640 ** usrerr() as this is the 641 ** reason for failure that 642 ** should be logged for 643 ** undelivered recipients. 644 */ 645 646 e->e_message = NULL; 647 errno = 0; 648 inputerr = true; 649 goto readabort; 650 } 651 } while (c == SM_IO_EOF && errno == EINTR); 652 if (c != SM_IO_EOF) 653 (void) sm_io_ungetc(fp, SM_TIME_DEFAULT, c); 654 if (c == ' ' || c == '\t') 655 { 656 /* yep -- defer this */ 657 continue; 658 } 659 660 SM_ASSERT(bp > buf); 661 662 /* guaranteed by isheader(buf) */ 663 SM_ASSERT(*(bp - 1) != '\n' || bp > buf + 1); 664 665 /* trim off trailing CRLF or NL */ 666 if (*--bp != '\n' || *--bp != '\r') 667 bp++; 668 *bp = '\0'; 669 670 if (bitset(H_EOH, chompheader(buf, 671 CHHDR_CHECK | CHHDR_USER, 672 hdrp, e))) 673 { 674 mstate = MS_BODY; 675 goto nextstate; 676 } 677 numhdrs++; 678 break; 679 680 case MS_BODY: 681 if (tTd(30, 1)) 682 sm_dprintf("EOH\n"); 683 684 if (headeronly) 685 goto readerr; 686 687 df = collect_eoh(e, numhdrs, hdrslen); 688 if (df == NULL) 689 e->e_flags |= EF_TOOBIG; 690 691 bp = buf; 692 693 /* toss blank line */ 694 if ((!bitset(EF_CRLF_NOT_EOL, e->e_flags) && 695 bp[0] == '\r' && bp[1] == '\n') || 696 (!bitset(EF_NL_NOT_EOL, e->e_flags) && 697 bp[0] == '\n')) 698 { 699 break; 700 } 701 702 /* if not a blank separator, write it out */ 703 if (!bitset(EF_TOOBIG, e->e_flags)) 704 { 705 while (*bp != '\0') 706 (void) sm_io_putc(df, SM_TIME_DEFAULT, 707 *bp++); 708 } 709 break; 710 } 711 bp = buf; 712 } 713 714 readerr: 715 if ((sm_io_eof(fp) && smtpmode) || sm_io_error(fp)) 716 { 717 const char *errmsg; 718 719 if (sm_io_eof(fp)) 720 errmsg = "unexpected close"; 721 else 722 errmsg = sm_errstring(errno); 723 if (tTd(30, 1)) 724 sm_dprintf("collect: premature EOM: %s\n", errmsg); 725 if (LogLevel > 1) 726 sm_syslog(LOG_WARNING, e->e_id, 727 "collect: premature EOM: %s", errmsg); 728 inputerr = true; 729 } 730 731 if (headeronly) 732 return; 733 734 if (mstate != MS_BODY) 735 { 736 /* no body or discard, so we never opened the data file */ 737 SM_ASSERT(df == NULL); 738 df = collect_eoh(e, numhdrs, hdrslen); 739 } 740 741 if (df == NULL) 742 { 743 /* skip next few clauses */ 744 /* EMPTY */ 745 } 746 else if (sm_io_flush(df, SM_TIME_DEFAULT) != 0 || sm_io_error(df)) 747 { 748 dferror(df, "sm_io_flush||sm_io_error", e); 749 flush_errors(true); 750 finis(true, true, ExitStat); 751 /* NOTREACHED */ 752 } 753 else if (SuperSafe == SAFE_NO || 754 SuperSafe == SAFE_INTERACTIVE || 755 (SuperSafe == SAFE_REALLY_POSTMILTER && smtpmode)) 756 { 757 /* skip next few clauses */ 758 /* EMPTY */ 759 /* Note: updfs() is not called in this case! */ 760 } 761 else if (sm_io_setinfo(df, SM_BF_COMMIT, NULL) < 0 && errno != EINVAL) 762 { 763 int save_errno = errno; 764 765 if (save_errno == EEXIST) 766 { 767 char *dfile; 768 struct stat st; 769 int dfd; 770 771 dfile = queuename(e, DATAFL_LETTER); 772 if (stat(dfile, &st) < 0) 773 st.st_size = -1; 774 errno = EEXIST; 775 syserr("@collect: bfcommit(%s): already on disk, size=%ld", 776 dfile, (long) st.st_size); 777 dfd = sm_io_getinfo(df, SM_IO_WHAT_FD, NULL); 778 if (dfd >= 0) 779 dumpfd(dfd, true, true); 780 } 781 errno = save_errno; 782 dferror(df, "bfcommit", e); 783 flush_errors(true); 784 finis(save_errno != EEXIST, true, ExitStat); 785 } 786 else if ((afd = sm_io_getinfo(df, SM_IO_WHAT_FD, NULL)) < 0) 787 { 788 dferror(df, "sm_io_getinfo", e); 789 flush_errors(true); 790 finis(true, true, ExitStat); 791 /* NOTREACHED */ 792 } 793 else if (fsync(afd) < 0) 794 { 795 dferror(df, "fsync", e); 796 flush_errors(true); 797 finis(true, true, ExitStat); 798 /* NOTREACHED */ 799 } 800 else if (sm_io_close(df, SM_TIME_DEFAULT) < 0) 801 { 802 dferror(df, "sm_io_close", e); 803 flush_errors(true); 804 finis(true, true, ExitStat); 805 /* NOTREACHED */ 806 } 807 else 808 { 809 /* everything is happily flushed to disk */ 810 df = NULL; 811 812 /* remove from available space in filesystem */ 813 updfs(e, 0, 1, "collect"); 814 } 815 816 /* An EOF when running SMTP is an error */ 817 readabort: 818 if (inputerr && (OpMode == MD_SMTP || OpMode == MD_DAEMON)) 819 { 820 char *host; 821 char *problem; 822 ADDRESS *q; 823 824 host = RealHostName; 825 if (host == NULL) 826 host = "localhost"; 827 828 if (sm_io_eof(fp)) 829 problem = "unexpected close"; 830 else if (sm_io_error(fp)) 831 problem = "I/O error"; 832 else 833 problem = "read timeout"; 834 if (LogLevel > 0 && sm_io_eof(fp)) 835 sm_syslog(LOG_NOTICE, e->e_id, 836 "collect: %s on connection from %.100s, sender=%s", 837 problem, host, 838 shortenstring(e->e_from.q_paddr, MAXSHORTSTR)); 839 if (sm_io_eof(fp)) 840 usrerr("421 4.4.1 collect: %s on connection from %s, from=%s", 841 problem, host, 842 shortenstring(e->e_from.q_paddr, MAXSHORTSTR)); 843 else 844 syserr("421 4.4.1 collect: %s on connection from %s, from=%s", 845 problem, host, 846 shortenstring(e->e_from.q_paddr, MAXSHORTSTR)); 847 flush_errors(true); 848 849 /* don't return an error indication */ 850 e->e_to = NULL; 851 e->e_flags &= ~EF_FATALERRS; 852 e->e_flags |= EF_CLRQUEUE; 853 854 /* Don't send any message notification to sender */ 855 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 856 { 857 if (QS_IS_DEAD(q->q_state)) 858 continue; 859 q->q_state = QS_FATALERR; 860 } 861 862 (void) sm_io_close(df, SM_TIME_DEFAULT); 863 df = NULL; 864 finis(true, true, ExitStat); 865 /* NOTREACHED */ 866 } 867 868 /* Log collection information. */ 869 if (bitset(EF_LOGSENDER, e->e_flags) && LogLevel > 4) 870 { 871 logsender(e, e->e_msgid); 872 e->e_flags &= ~EF_LOGSENDER; 873 } 874 875 /* check for message too large */ 876 if (bitset(EF_TOOBIG, e->e_flags)) 877 { 878 e->e_flags |= EF_NO_BODY_RETN|EF_CLRQUEUE; 879 if (!bitset(EF_FATALERRS, e->e_flags)) 880 { 881 e->e_status = "5.2.3"; 882 usrerrenh(e->e_status, 883 "552 Message exceeds maximum fixed size (%ld)", 884 MaxMessageSize); 885 if (LogLevel > 6) 886 sm_syslog(LOG_NOTICE, e->e_id, 887 "message size (%ld) exceeds maximum (%ld)", 888 e->e_msgsize, MaxMessageSize); 889 } 890 } 891 892 /* check for illegal 8-bit data */ 893 if (HasEightBits) 894 { 895 e->e_flags |= EF_HAS8BIT; 896 if (!bitset(MM_PASS8BIT|MM_MIME8BIT, MimeMode) && 897 !bitset(EF_IS_MIME, e->e_flags)) 898 { 899 e->e_status = "5.6.1"; 900 usrerrenh(e->e_status, "554 Eight bit data not allowed"); 901 } 902 } 903 else 904 { 905 /* if it claimed to be 8 bits, well, it lied.... */ 906 if (e->e_bodytype != NULL && 907 sm_strcasecmp(e->e_bodytype, "8BITMIME") == 0) 908 e->e_bodytype = "7BIT"; 909 } 910 911 if (SuperSafe == SAFE_REALLY && !bitset(EF_FATALERRS, e->e_flags)) 912 { 913 char *dfname = queuename(e, DATAFL_LETTER); 914 if ((e->e_dfp = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, dfname, 915 SM_IO_RDONLY_B, NULL)) == NULL) 916 { 917 /* we haven't acked receipt yet, so just chuck this */ 918 syserr("@Cannot reopen %s", dfname); 919 finis(true, true, ExitStat); 920 /* NOTREACHED */ 921 } 922 } 923 else 924 e->e_dfp = df; 925 926 /* collect statistics */ 927 if (OpMode != MD_VERIFY) 928 { 929 /* 930 ** Recalculate e_msgpriority, it is done at in eatheader() 931 ** which is called (in 8.12) after the header is collected, 932 ** hence e_msgsize is (most likely) incorrect. 933 */ 934 935 e->e_msgpriority = e->e_msgsize 936 - e->e_class * WkClassFact 937 + e->e_nrcpts * WkRecipFact; 938 markstats(e, (ADDRESS *) NULL, STATS_NORMAL); 939 } 940 } 941 942 /* 943 ** DFERROR -- signal error on writing the data file. 944 ** 945 ** Called by collect(). Collect() always terminates the process 946 ** immediately after calling dferror(), which means that the SMTP 947 ** session will be terminated, which means that any error message 948 ** issued by dferror must be a 421 error, as per RFC 821. 949 ** 950 ** Parameters: 951 ** df -- the file pointer for the data file. 952 ** msg -- detailed message. 953 ** e -- the current envelope. 954 ** 955 ** Returns: 956 ** none. 957 ** 958 ** Side Effects: 959 ** Gives an error message. 960 ** Arranges for following output to go elsewhere. 961 */ 962 963 void 964 dferror(df, msg, e) 965 SM_FILE_T *volatile df; 966 char *msg; 967 register ENVELOPE *e; 968 { 969 char *dfname; 970 971 dfname = queuename(e, DATAFL_LETTER); 972 setstat(EX_IOERR); 973 if (errno == ENOSPC) 974 { 975 #if STAT64 > 0 976 struct stat64 st; 977 #else /* STAT64 > 0 */ 978 struct stat st; 979 #endif /* STAT64 > 0 */ 980 long avail; 981 long bsize; 982 983 e->e_flags |= EF_NO_BODY_RETN; 984 985 if ( 986 #if STAT64 > 0 987 fstat64(sm_io_getinfo(df, SM_IO_WHAT_FD, NULL), &st) 988 #else /* STAT64 > 0 */ 989 fstat(sm_io_getinfo(df, SM_IO_WHAT_FD, NULL), &st) 990 #endif /* STAT64 > 0 */ 991 < 0) 992 st.st_size = 0; 993 (void) sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, dfname, 994 SM_IO_WRONLY_B, NULL, df); 995 if (st.st_size <= 0) 996 (void) sm_io_fprintf(df, SM_TIME_DEFAULT, 997 "\n*** Mail could not be accepted"); 998 else 999 (void) sm_io_fprintf(df, SM_TIME_DEFAULT, 1000 "\n*** Mail of at least %llu bytes could not be accepted\n", 1001 (ULONGLONG_T) st.st_size); 1002 (void) sm_io_fprintf(df, SM_TIME_DEFAULT, 1003 "*** at %s due to lack of disk space for temp file.\n", 1004 MyHostName); 1005 avail = freediskspace(qid_printqueue(e->e_qgrp, e->e_qdir), 1006 &bsize); 1007 if (avail > 0) 1008 { 1009 if (bsize > 1024) 1010 avail *= bsize / 1024; 1011 else if (bsize < 1024) 1012 avail /= 1024 / bsize; 1013 (void) sm_io_fprintf(df, SM_TIME_DEFAULT, 1014 "*** Currently, %ld kilobytes are available for mail temp files.\n", 1015 avail); 1016 } 1017 #if 0 1018 /* Wrong response code; should be 421. */ 1019 e->e_status = "4.3.1"; 1020 usrerrenh(e->e_status, "452 Out of disk space for temp file"); 1021 #else /* 0 */ 1022 syserr("421 4.3.1 Out of disk space for temp file"); 1023 #endif /* 0 */ 1024 } 1025 else 1026 syserr("421 4.3.0 collect: Cannot write %s (%s, uid=%d, gid=%d)", 1027 dfname, msg, (int) geteuid(), (int) getegid()); 1028 if (sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 1029 SM_IO_WRONLY, NULL, df) == NULL) 1030 sm_syslog(LOG_ERR, e->e_id, 1031 "dferror: sm_io_reopen(\"/dev/null\") failed: %s", 1032 sm_errstring(errno)); 1033 } 1034 /* 1035 ** EATFROM -- chew up a UNIX style from line and process 1036 ** 1037 ** This does indeed make some assumptions about the format 1038 ** of UNIX messages. 1039 ** 1040 ** Parameters: 1041 ** fm -- the from line. 1042 ** e -- envelope 1043 ** 1044 ** Returns: 1045 ** none. 1046 ** 1047 ** Side Effects: 1048 ** extracts what information it can from the header, 1049 ** such as the date. 1050 */ 1051 1052 #ifndef NOTUNIX 1053 1054 static char *DowList[] = 1055 { 1056 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", NULL 1057 }; 1058 1059 static char *MonthList[] = 1060 { 1061 "Jan", "Feb", "Mar", "Apr", "May", "Jun", 1062 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", 1063 NULL 1064 }; 1065 1066 static void 1067 eatfrom(fm, e) 1068 char *volatile fm; 1069 register ENVELOPE *e; 1070 { 1071 register char *p; 1072 register char **dt; 1073 1074 if (tTd(30, 2)) 1075 sm_dprintf("eatfrom(%s)\n", fm); 1076 1077 /* find the date part */ 1078 p = fm; 1079 while (*p != '\0') 1080 { 1081 /* skip a word */ 1082 while (*p != '\0' && *p != ' ') 1083 p++; 1084 while (*p == ' ') 1085 p++; 1086 if (strlen(p) < 17) 1087 { 1088 /* no room for the date */ 1089 return; 1090 } 1091 if (!(isascii(*p) && isupper(*p)) || 1092 p[3] != ' ' || p[13] != ':' || p[16] != ':') 1093 continue; 1094 1095 /* we have a possible date */ 1096 for (dt = DowList; *dt != NULL; dt++) 1097 if (strncmp(*dt, p, 3) == 0) 1098 break; 1099 if (*dt == NULL) 1100 continue; 1101 1102 for (dt = MonthList; *dt != NULL; dt++) 1103 { 1104 if (strncmp(*dt, &p[4], 3) == 0) 1105 break; 1106 } 1107 if (*dt != NULL) 1108 break; 1109 } 1110 1111 if (*p != '\0') 1112 { 1113 char *q, buf[25]; 1114 1115 /* we have found a date */ 1116 (void) sm_strlcpy(buf, p, sizeof(buf)); 1117 q = arpadate(buf); 1118 macdefine(&e->e_macro, A_TEMP, 'a', q); 1119 } 1120 } 1121 #endif /* ! NOTUNIX */ 1122