1 /* 2 * Copyright (c) 1983 Eric P. Allman 3 * Copyright (c) 1988, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * %sccs.include.redist.c% 7 */ 8 9 #ifndef lint 10 static char sccsid[] = "@(#)deliver.c 8.119 (Berkeley) 12/10/94"; 11 #endif /* not lint */ 12 13 #include "sendmail.h" 14 #include <netdb.h> 15 #include <errno.h> 16 #if NAMED_BIND 17 #include <resolv.h> 18 19 extern int h_errno; 20 #endif 21 22 extern char SmtpError[]; 23 24 /* 25 ** SENDALL -- actually send all the messages. 26 ** 27 ** Parameters: 28 ** e -- the envelope to send. 29 ** mode -- the delivery mode to use. If SM_DEFAULT, use 30 ** the current e->e_sendmode. 31 ** 32 ** Returns: 33 ** none. 34 ** 35 ** Side Effects: 36 ** Scans the send lists and sends everything it finds. 37 ** Delivers any appropriate error messages. 38 ** If we are running in a non-interactive mode, takes the 39 ** appropriate action. 40 */ 41 42 sendall(e, mode) 43 ENVELOPE *e; 44 char mode; 45 { 46 register ADDRESS *q; 47 char *owner; 48 int otherowners; 49 register ENVELOPE *ee; 50 ENVELOPE *splitenv = NULL; 51 bool announcequeueup; 52 bool oldverbose = Verbose; 53 int pid; 54 char *qid; 55 56 /* 57 ** If we have had global, fatal errors, don't bother sending 58 ** the message at all if we are in SMTP mode. Local errors 59 ** (e.g., a single address failing) will still cause the other 60 ** addresses to be sent. 61 */ 62 63 if (bitset(EF_FATALERRS, e->e_flags) && 64 (OpMode == MD_SMTP || OpMode == MD_DAEMON)) 65 { 66 e->e_flags |= EF_CLRQUEUE; 67 return; 68 } 69 70 /* determine actual delivery mode */ 71 CurrentLA = getla(); 72 if (mode == SM_DEFAULT) 73 { 74 mode = e->e_sendmode; 75 if (mode != SM_VERIFY && 76 shouldqueue(e->e_msgpriority, e->e_ctime)) 77 mode = SM_QUEUE; 78 announcequeueup = mode == SM_QUEUE; 79 } 80 else 81 announcequeueup = FALSE; 82 83 if (tTd(13, 1)) 84 { 85 printf("\n===== SENDALL: mode %c, id %s, e_from ", 86 mode, e->e_id); 87 printaddr(&e->e_from, FALSE); 88 printf("sendqueue:\n"); 89 printaddr(e->e_sendqueue, TRUE); 90 } 91 92 /* 93 ** Do any preprocessing necessary for the mode we are running. 94 ** Check to make sure the hop count is reasonable. 95 ** Delete sends to the sender in mailing lists. 96 */ 97 98 CurEnv = e; 99 100 if (e->e_hopcount > MaxHopCount) 101 { 102 errno = 0; 103 queueup(e, TRUE, announcequeueup); 104 e->e_flags |= EF_FATALERRS|EF_PM_NOTIFY|EF_CLRQUEUE; 105 syserr("554 too many hops %d (%d max): from %s via %s, to %s", 106 e->e_hopcount, MaxHopCount, e->e_from.q_paddr, 107 RealHostName == NULL ? "localhost" : RealHostName, 108 e->e_sendqueue->q_paddr); 109 return; 110 } 111 112 /* 113 ** Do sender deletion. 114 ** 115 ** If the sender has the QQUEUEUP flag set, skip this. 116 ** This can happen if the name server is hosed when you 117 ** are trying to send mail. The result is that the sender 118 ** is instantiated in the queue as a recipient. 119 */ 120 121 if (!bitset(EF_METOO, e->e_flags) && 122 !bitset(QQUEUEUP, e->e_from.q_flags)) 123 { 124 if (tTd(13, 5)) 125 { 126 printf("sendall: QDONTSEND "); 127 printaddr(&e->e_from, FALSE); 128 } 129 e->e_from.q_flags |= QDONTSEND; 130 (void) recipient(&e->e_from, &e->e_sendqueue, 0, e); 131 } 132 133 /* 134 ** Handle alias owners. 135 ** 136 ** We scan up the q_alias chain looking for owners. 137 ** We discard owners that are the same as the return path. 138 */ 139 140 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 141 { 142 register struct address *a; 143 144 for (a = q; a != NULL && a->q_owner == NULL; a = a->q_alias) 145 continue; 146 if (a != NULL) 147 q->q_owner = a->q_owner; 148 149 if (q->q_owner != NULL && 150 !bitset(QDONTSEND, q->q_flags) && 151 strcmp(q->q_owner, e->e_from.q_paddr) == 0) 152 q->q_owner = NULL; 153 } 154 155 owner = ""; 156 otherowners = 1; 157 while (owner != NULL && otherowners > 0) 158 { 159 owner = NULL; 160 otherowners = 0; 161 162 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 163 { 164 if (bitset(QDONTSEND, q->q_flags)) 165 continue; 166 167 if (q->q_owner != NULL) 168 { 169 if (owner == NULL) 170 owner = q->q_owner; 171 else if (owner != q->q_owner) 172 { 173 if (strcmp(owner, q->q_owner) == 0) 174 { 175 /* make future comparisons cheap */ 176 q->q_owner = owner; 177 } 178 else 179 { 180 otherowners++; 181 } 182 owner = q->q_owner; 183 } 184 } 185 else 186 { 187 otherowners++; 188 } 189 } 190 191 if (owner != NULL && otherowners > 0) 192 { 193 extern HDR *copyheader(); 194 extern ADDRESS *copyqueue(); 195 196 /* 197 ** Split this envelope into two. 198 */ 199 200 ee = (ENVELOPE *) xalloc(sizeof(ENVELOPE)); 201 *ee = *e; 202 ee->e_id = NULL; 203 (void) queuename(ee, '\0'); 204 205 if (tTd(13, 1)) 206 printf("sendall: split %s into %s\n", 207 e->e_id, ee->e_id); 208 209 ee->e_header = copyheader(e->e_header); 210 ee->e_sendqueue = copyqueue(e->e_sendqueue); 211 ee->e_errorqueue = copyqueue(e->e_errorqueue); 212 ee->e_flags = e->e_flags & ~(EF_INQUEUE|EF_CLRQUEUE|EF_FATALERRS|EF_SENDRECEIPT); 213 ee->e_flags |= EF_NORECEIPT; 214 setsender(owner, ee, NULL, TRUE); 215 if (tTd(13, 5)) 216 { 217 printf("sendall(split): QDONTSEND "); 218 printaddr(&ee->e_from, FALSE); 219 } 220 ee->e_from.q_flags |= QDONTSEND; 221 ee->e_dfp = NULL; 222 ee->e_xfp = NULL; 223 ee->e_df = NULL; 224 ee->e_errormode = EM_MAIL; 225 ee->e_sibling = splitenv; 226 splitenv = ee; 227 228 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 229 if (q->q_owner == owner) 230 { 231 q->q_flags |= QDONTSEND; 232 q->q_flags &= ~QQUEUEUP; 233 } 234 for (q = ee->e_sendqueue; q != NULL; q = q->q_next) 235 if (q->q_owner != owner) 236 { 237 q->q_flags |= QDONTSEND; 238 q->q_flags &= ~QQUEUEUP; 239 } 240 241 if (e->e_df != NULL && mode != SM_VERIFY) 242 { 243 ee->e_dfp = NULL; 244 ee->e_df = queuename(ee, 'd'); 245 ee->e_df = newstr(ee->e_df); 246 if (link(e->e_df, ee->e_df) < 0) 247 { 248 syserr("sendall: link(%s, %s)", 249 e->e_df, ee->e_df); 250 } 251 } 252 #ifdef LOG 253 if (LogLevel > 4) 254 syslog(LOG_INFO, "%s: clone %s, owner=%s", 255 ee->e_id, e->e_id, owner); 256 #endif 257 } 258 } 259 260 if (owner != NULL) 261 { 262 setsender(owner, e, NULL, TRUE); 263 if (tTd(13, 5)) 264 { 265 printf("sendall(owner): QDONTSEND "); 266 printaddr(&e->e_from, FALSE); 267 } 268 e->e_from.q_flags |= QDONTSEND; 269 e->e_errormode = EM_MAIL; 270 e->e_flags |= EF_NORECEIPT; 271 } 272 273 # ifdef QUEUE 274 if ((mode == SM_QUEUE || mode == SM_FORK || 275 (mode != SM_VERIFY && SuperSafe)) && 276 !bitset(EF_INQUEUE, e->e_flags)) 277 { 278 /* be sure everything is instantiated in the queue */ 279 queueup(e, TRUE, announcequeueup); 280 for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 281 queueup(ee, TRUE, announcequeueup); 282 } 283 #endif /* QUEUE */ 284 285 /* 286 ** If we belong in background, fork now. 287 */ 288 289 switch (mode) 290 { 291 case SM_VERIFY: 292 Verbose = TRUE; 293 break; 294 295 case SM_QUEUE: 296 queueonly: 297 e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 298 return; 299 300 case SM_FORK: 301 if (e->e_xfp != NULL) 302 (void) fflush(e->e_xfp); 303 304 # if !HASFLOCK 305 /* 306 ** Since fcntl locking has the interesting semantic that 307 ** the lock is owned by a process, not by an open file 308 ** descriptor, we have to flush this to the queue, and 309 ** then restart from scratch in the child. 310 */ 311 312 /* save id for future use */ 313 qid = e->e_id; 314 315 /* now drop the envelope in the parent */ 316 e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 317 dropenvelope(e); 318 319 /* and reacquire in the child */ 320 (void) dowork(qid, TRUE, FALSE, e); 321 322 return; 323 324 # else /* HASFLOCK */ 325 326 pid = fork(); 327 if (pid < 0) 328 { 329 goto queueonly; 330 } 331 else if (pid > 0) 332 { 333 /* be sure we leave the temp files to our child */ 334 /* can't call unlockqueue to avoid unlink of xfp */ 335 if (e->e_lockfp != NULL) 336 (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 337 e->e_lockfp = NULL; 338 339 /* close any random open files in the envelope */ 340 closexscript(e); 341 if (e->e_dfp != NULL) 342 (void) xfclose(e->e_dfp, "sendenvelope", e->e_df); 343 e->e_dfp = NULL; 344 e->e_id = e->e_df = NULL; 345 346 /* catch intermediate zombie */ 347 (void) waitfor(pid); 348 return; 349 } 350 351 /* double fork to avoid zombies */ 352 pid = fork(); 353 if (pid > 0) 354 exit(EX_OK); 355 356 /* be sure we are immune from the terminal */ 357 disconnect(1, e); 358 359 /* prevent parent from waiting if there was an error */ 360 if (pid < 0) 361 { 362 e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 363 finis(); 364 } 365 366 /* 367 ** Close any cached connections. 368 ** 369 ** We don't send the QUIT protocol because the parent 370 ** still knows about the connection. 371 ** 372 ** This should only happen when delivering an error 373 ** message. 374 */ 375 376 mci_flush(FALSE, NULL); 377 378 # endif /* HASFLOCK */ 379 380 break; 381 } 382 383 if (splitenv != NULL) 384 { 385 if (tTd(13, 1)) 386 { 387 printf("\nsendall: Split queue; remaining queue:\n"); 388 printaddr(e->e_sendqueue, TRUE); 389 } 390 391 for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 392 { 393 CurEnv = ee; 394 if (mode != SM_VERIFY) 395 openxscript(ee); 396 sendenvelope(ee, mode); 397 dropenvelope(ee); 398 } 399 400 CurEnv = e; 401 } 402 sendenvelope(e, mode); 403 Verbose = oldverbose; 404 } 405 406 sendenvelope(e, mode) 407 register ENVELOPE *e; 408 char mode; 409 { 410 register ADDRESS *q; 411 char *qf; 412 bool didany; 413 414 /* 415 ** If we have had global, fatal errors, don't bother sending 416 ** the message at all if we are in SMTP mode. Local errors 417 ** (e.g., a single address failing) will still cause the other 418 ** addresses to be sent. 419 */ 420 421 if (bitset(EF_FATALERRS, e->e_flags) && 422 (OpMode == MD_SMTP || OpMode == MD_DAEMON)) 423 { 424 e->e_flags |= EF_CLRQUEUE; 425 return; 426 } 427 428 /* 429 ** Run through the list and send everything. 430 ** 431 ** Set EF_GLOBALERRS so that error messages during delivery 432 ** result in returned mail. 433 */ 434 435 e->e_nsent = 0; 436 e->e_flags |= EF_GLOBALERRS; 437 didany = FALSE; 438 439 /* now run through the queue */ 440 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 441 { 442 #ifdef XDEBUG 443 char wbuf[MAXNAME + 20]; 444 445 (void) sprintf(wbuf, "sendall(%s)", q->q_paddr); 446 checkfd012(wbuf); 447 #endif 448 if (mode == SM_VERIFY) 449 { 450 e->e_to = q->q_paddr; 451 if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 452 { 453 if (q->q_host != NULL && q->q_host[0] != '\0') 454 message("deliverable: mailer %s, host %s, user %s", 455 q->q_mailer->m_name, 456 q->q_host, 457 q->q_user); 458 else 459 message("deliverable: mailer %s, user %s", 460 q->q_mailer->m_name, 461 q->q_user); 462 } 463 } 464 else if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 465 { 466 # ifdef QUEUE 467 /* 468 ** Checkpoint the send list every few addresses 469 */ 470 471 if (e->e_nsent >= CheckpointInterval) 472 { 473 queueup(e, TRUE, FALSE); 474 e->e_nsent = 0; 475 } 476 # endif /* QUEUE */ 477 (void) deliver(e, q); 478 didany = TRUE; 479 } 480 } 481 if (didany) 482 { 483 e->e_dtime = curtime(); 484 e->e_ntries++; 485 } 486 487 #ifdef XDEBUG 488 checkfd012("end of sendenvelope"); 489 #endif 490 491 if (mode == SM_FORK) 492 finis(); 493 } 494 /* 495 ** DOFORK -- do a fork, retrying a couple of times on failure. 496 ** 497 ** This MUST be a macro, since after a vfork we are running 498 ** two processes on the same stack!!! 499 ** 500 ** Parameters: 501 ** none. 502 ** 503 ** Returns: 504 ** From a macro??? You've got to be kidding! 505 ** 506 ** Side Effects: 507 ** Modifies the ==> LOCAL <== variable 'pid', leaving: 508 ** pid of child in parent, zero in child. 509 ** -1 on unrecoverable error. 510 ** 511 ** Notes: 512 ** I'm awfully sorry this looks so awful. That's 513 ** vfork for you..... 514 */ 515 516 # define NFORKTRIES 5 517 518 # ifndef FORK 519 # define FORK fork 520 # endif 521 522 # define DOFORK(fORKfN) \ 523 {\ 524 register int i;\ 525 \ 526 for (i = NFORKTRIES; --i >= 0; )\ 527 {\ 528 pid = fORKfN();\ 529 if (pid >= 0)\ 530 break;\ 531 if (i > 0)\ 532 sleep((unsigned) NFORKTRIES - i);\ 533 }\ 534 } 535 /* 536 ** DOFORK -- simple fork interface to DOFORK. 537 ** 538 ** Parameters: 539 ** none. 540 ** 541 ** Returns: 542 ** pid of child in parent. 543 ** zero in child. 544 ** -1 on error. 545 ** 546 ** Side Effects: 547 ** returns twice, once in parent and once in child. 548 */ 549 550 dofork() 551 { 552 register int pid; 553 554 DOFORK(fork); 555 return (pid); 556 } 557 /* 558 ** DELIVER -- Deliver a message to a list of addresses. 559 ** 560 ** This routine delivers to everyone on the same host as the 561 ** user on the head of the list. It is clever about mailers 562 ** that don't handle multiple users. It is NOT guaranteed 563 ** that it will deliver to all these addresses however -- so 564 ** deliver should be called once for each address on the 565 ** list. 566 ** 567 ** Parameters: 568 ** e -- the envelope to deliver. 569 ** firstto -- head of the address list to deliver to. 570 ** 571 ** Returns: 572 ** zero -- successfully delivered. 573 ** else -- some failure, see ExitStat for more info. 574 ** 575 ** Side Effects: 576 ** The standard input is passed off to someone. 577 */ 578 579 deliver(e, firstto) 580 register ENVELOPE *e; 581 ADDRESS *firstto; 582 { 583 char *host; /* host being sent to */ 584 char *user; /* user being sent to */ 585 char **pvp; 586 register char **mvp; 587 register char *p; 588 register MAILER *m; /* mailer for this recipient */ 589 ADDRESS *ctladdr; 590 register MCI *mci; 591 register ADDRESS *to = firstto; 592 bool clever = FALSE; /* running user smtp to this mailer */ 593 ADDRESS *tochain = NULL; /* chain of users in this mailer call */ 594 int rcode; /* response code */ 595 char *firstsig; /* signature of firstto */ 596 int pid; 597 char *curhost; 598 time_t xstart; 599 int mpvect[2]; 600 int rpvect[2]; 601 char *pv[MAXPV+1]; 602 char tobuf[TOBUFSIZE]; /* text line of to people */ 603 char buf[MAXNAME]; 604 char rpathbuf[MAXNAME]; /* translated return path */ 605 extern int checkcompat(); 606 607 errno = 0; 608 if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags)) 609 return (0); 610 611 #if NAMED_BIND 612 /* unless interactive, try twice, over a minute */ 613 if (OpMode == MD_DAEMON || OpMode == MD_SMTP) 614 { 615 _res.retrans = 30; 616 _res.retry = 2; 617 } 618 #endif 619 620 m = to->q_mailer; 621 host = to->q_host; 622 CurEnv = e; /* just in case */ 623 e->e_statmsg = NULL; 624 SmtpError[0] = '\0'; 625 626 if (tTd(10, 1)) 627 printf("\n--deliver, id=%s, mailer=%s, host=`%s', first user=`%s'\n", 628 e->e_id, m->m_name, host, to->q_user); 629 if (tTd(10, 100)) 630 printopenfds(FALSE); 631 632 /* 633 ** If this mailer is expensive, and if we don't want to make 634 ** connections now, just mark these addresses and return. 635 ** This is useful if we want to batch connections to 636 ** reduce load. This will cause the messages to be 637 ** queued up, and a daemon will come along to send the 638 ** messages later. 639 ** This should be on a per-mailer basis. 640 */ 641 642 if (NoConnect && bitnset(M_EXPENSIVE, m->m_flags) && !Verbose) 643 { 644 for (; to != NULL; to = to->q_next) 645 { 646 if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 647 to->q_mailer != m) 648 continue; 649 to->q_flags |= QQUEUEUP; 650 e->e_to = to->q_paddr; 651 message("queued"); 652 if (LogLevel > 8) 653 logdelivery(m, NULL, "queued", NULL, xstart, e); 654 } 655 e->e_to = NULL; 656 return (0); 657 } 658 659 /* 660 ** Do initial argv setup. 661 ** Insert the mailer name. Notice that $x expansion is 662 ** NOT done on the mailer name. Then, if the mailer has 663 ** a picky -f flag, we insert it as appropriate. This 664 ** code does not check for 'pv' overflow; this places a 665 ** manifest lower limit of 4 for MAXPV. 666 ** The from address rewrite is expected to make 667 ** the address relative to the other end. 668 */ 669 670 /* rewrite from address, using rewriting rules */ 671 rcode = EX_OK; 672 if (bitnset(M_UDBENVELOPE, e->e_from.q_mailer->m_flags)) 673 p = e->e_sender; 674 else 675 p = e->e_from.q_paddr; 676 (void) strcpy(rpathbuf, remotename(p, m, 677 RF_SENDERADDR|RF_CANONICAL, 678 &rcode, e)); 679 define('g', rpathbuf, e); /* translated return path */ 680 define('h', host, e); /* to host */ 681 Errors = 0; 682 pvp = pv; 683 *pvp++ = m->m_argv[0]; 684 685 /* insert -f or -r flag as appropriate */ 686 if (FromFlag && (bitnset(M_FOPT, m->m_flags) || bitnset(M_ROPT, m->m_flags))) 687 { 688 if (bitnset(M_FOPT, m->m_flags)) 689 *pvp++ = "-f"; 690 else 691 *pvp++ = "-r"; 692 *pvp++ = newstr(rpathbuf); 693 } 694 695 /* 696 ** Append the other fixed parts of the argv. These run 697 ** up to the first entry containing "$u". There can only 698 ** be one of these, and there are only a few more slots 699 ** in the pv after it. 700 */ 701 702 for (mvp = m->m_argv; (p = *++mvp) != NULL; ) 703 { 704 /* can't use strchr here because of sign extension problems */ 705 while (*p != '\0') 706 { 707 if ((*p++ & 0377) == MACROEXPAND) 708 { 709 if (*p == 'u') 710 break; 711 } 712 } 713 714 if (*p != '\0') 715 break; 716 717 /* this entry is safe -- go ahead and process it */ 718 expand(*mvp, buf, &buf[sizeof buf - 1], e); 719 *pvp++ = newstr(buf); 720 if (pvp >= &pv[MAXPV - 3]) 721 { 722 syserr("554 Too many parameters to %s before $u", pv[0]); 723 return (-1); 724 } 725 } 726 727 /* 728 ** If we have no substitution for the user name in the argument 729 ** list, we know that we must supply the names otherwise -- and 730 ** SMTP is the answer!! 731 */ 732 733 if (*mvp == NULL) 734 { 735 /* running SMTP */ 736 # ifdef SMTP 737 clever = TRUE; 738 *pvp = NULL; 739 # else /* SMTP */ 740 /* oops! we don't implement SMTP */ 741 syserr("554 SMTP style mailer not implemented"); 742 return (EX_SOFTWARE); 743 # endif /* SMTP */ 744 } 745 746 /* 747 ** At this point *mvp points to the argument with $u. We 748 ** run through our address list and append all the addresses 749 ** we can. If we run out of space, do not fret! We can 750 ** always send another copy later. 751 */ 752 753 tobuf[0] = '\0'; 754 e->e_to = tobuf; 755 ctladdr = NULL; 756 xstart = curtime(); 757 firstsig = hostsignature(firstto->q_mailer, firstto->q_host, e); 758 for (; to != NULL; to = to->q_next) 759 { 760 /* avoid sending multiple recipients to dumb mailers */ 761 if (tobuf[0] != '\0' && !bitnset(M_MUSER, m->m_flags)) 762 break; 763 764 /* if already sent or not for this host, don't send */ 765 if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 766 to->q_mailer != firstto->q_mailer || 767 strcmp(hostsignature(to->q_mailer, to->q_host, e), firstsig) != 0) 768 continue; 769 770 /* avoid overflowing tobuf */ 771 if (sizeof tobuf < (strlen(to->q_paddr) + strlen(tobuf) + 2)) 772 break; 773 774 if (tTd(10, 1)) 775 { 776 printf("\nsend to "); 777 printaddr(to, FALSE); 778 } 779 780 /* compute effective uid/gid when sending */ 781 if (bitnset(M_RUNASRCPT, to->q_mailer->m_flags)) 782 ctladdr = getctladdr(to); 783 784 if (tTd(10, 2)) 785 { 786 printf("ctladdr="); 787 printaddr(ctladdr, FALSE); 788 } 789 790 user = to->q_user; 791 e->e_to = to->q_paddr; 792 if (tTd(10, 5)) 793 { 794 printf("deliver: QDONTSEND "); 795 printaddr(to, FALSE); 796 } 797 to->q_flags |= QDONTSEND; 798 799 /* 800 ** Check to see that these people are allowed to 801 ** talk to each other. 802 */ 803 804 if (m->m_maxsize != 0 && e->e_msgsize > m->m_maxsize) 805 { 806 e->e_flags |= EF_NORETURN; 807 usrerr("552 Message is too large; %ld bytes max", m->m_maxsize); 808 giveresponse(EX_UNAVAILABLE, m, NULL, ctladdr, xstart, e); 809 continue; 810 } 811 #if NAMED_BIND 812 h_errno = 0; 813 #endif 814 rcode = checkcompat(to, e); 815 if (rcode != EX_OK) 816 { 817 markfailure(e, to, NULL, rcode); 818 giveresponse(rcode, m, NULL, ctladdr, xstart, e); 819 continue; 820 } 821 822 /* 823 ** Strip quote bits from names if the mailer is dumb 824 ** about them. 825 */ 826 827 if (bitnset(M_STRIPQ, m->m_flags)) 828 { 829 stripquotes(user); 830 stripquotes(host); 831 } 832 833 /* hack attack -- delivermail compatibility */ 834 if (m == ProgMailer && *user == '|') 835 user++; 836 837 /* 838 ** If an error message has already been given, don't 839 ** bother to send to this address. 840 ** 841 ** >>>>>>>>>> This clause assumes that the local mailer 842 ** >> NOTE >> cannot do any further aliasing; that 843 ** >>>>>>>>>> function is subsumed by sendmail. 844 */ 845 846 if (bitset(QBADADDR|QQUEUEUP, to->q_flags)) 847 continue; 848 849 /* save statistics.... */ 850 markstats(e, to); 851 852 /* 853 ** See if this user name is "special". 854 ** If the user name has a slash in it, assume that this 855 ** is a file -- send it off without further ado. Note 856 ** that this type of addresses is not processed along 857 ** with the others, so we fudge on the To person. 858 */ 859 860 if (m == FileMailer) 861 { 862 rcode = mailfile(user, ctladdr, e); 863 giveresponse(rcode, m, NULL, ctladdr, xstart, e); 864 e->e_nsent++; 865 if (rcode == EX_OK) 866 { 867 to->q_flags |= QSENT; 868 if (bitnset(M_LOCALMAILER, m->m_flags) && 869 (e->e_receiptto != NULL || 870 bitset(QPINGONSUCCESS, to->q_flags))) 871 { 872 to->q_flags |= QREPORT; 873 fprintf(e->e_xfp, "%s... Successfully delivered\n", 874 to->q_paddr); 875 } 876 } 877 to->q_statdate = curtime(); 878 continue; 879 } 880 881 /* 882 ** Address is verified -- add this user to mailer 883 ** argv, and add it to the print list of recipients. 884 */ 885 886 /* link together the chain of recipients */ 887 to->q_tchain = tochain; 888 tochain = to; 889 890 /* create list of users for error messages */ 891 (void) strcat(tobuf, ","); 892 (void) strcat(tobuf, to->q_paddr); 893 define('u', user, e); /* to user */ 894 p = to->q_home; 895 if (p == NULL && ctladdr != NULL) 896 p = ctladdr->q_home; 897 define('z', p, e); /* user's home */ 898 899 /* 900 ** Expand out this user into argument list. 901 */ 902 903 if (!clever) 904 { 905 expand(*mvp, buf, &buf[sizeof buf - 1], e); 906 *pvp++ = newstr(buf); 907 if (pvp >= &pv[MAXPV - 2]) 908 { 909 /* allow some space for trailing parms */ 910 break; 911 } 912 } 913 } 914 915 /* see if any addresses still exist */ 916 if (tobuf[0] == '\0') 917 { 918 define('g', (char *) NULL, e); 919 return (0); 920 } 921 922 /* print out messages as full list */ 923 e->e_to = tobuf + 1; 924 925 /* 926 ** Fill out any parameters after the $u parameter. 927 */ 928 929 while (!clever && *++mvp != NULL) 930 { 931 expand(*mvp, buf, &buf[sizeof buf - 1], e); 932 *pvp++ = newstr(buf); 933 if (pvp >= &pv[MAXPV]) 934 syserr("554 deliver: pv overflow after $u for %s", pv[0]); 935 } 936 *pvp++ = NULL; 937 938 /* 939 ** Call the mailer. 940 ** The argument vector gets built, pipes 941 ** are created as necessary, and we fork & exec as 942 ** appropriate. 943 ** If we are running SMTP, we just need to clean up. 944 */ 945 946 /*XXX this seems a bit wierd */ 947 if (ctladdr == NULL && m != ProgMailer && 948 bitset(QGOODUID, e->e_from.q_flags)) 949 ctladdr = &e->e_from; 950 951 #if NAMED_BIND 952 if (ConfigLevel < 2) 953 _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 954 #endif 955 956 if (tTd(11, 1)) 957 { 958 printf("openmailer:"); 959 printav(pv); 960 } 961 errno = 0; 962 #if NAMED_BIND 963 h_errno = 0; 964 #endif 965 966 CurHostName = NULL; 967 968 /* 969 ** Deal with the special case of mail handled through an IPC 970 ** connection. 971 ** In this case we don't actually fork. We must be 972 ** running SMTP for this to work. We will return a 973 ** zero pid to indicate that we are running IPC. 974 ** We also handle a debug version that just talks to stdin/out. 975 */ 976 977 curhost = NULL; 978 SmtpPhase = NULL; 979 mci = NULL; 980 981 #ifdef XDEBUG 982 { 983 char wbuf[MAXLINE]; 984 985 /* make absolutely certain 0, 1, and 2 are in use */ 986 sprintf(wbuf, "%s... openmailer(%s)", e->e_to, m->m_name); 987 checkfd012(wbuf); 988 } 989 #endif 990 991 /* check for 8-bit available */ 992 if (bitset(EF_HAS8BIT, e->e_flags) && 993 bitnset(M_7BITS, m->m_flags) && 994 !bitset(MM_MIME8BIT, MimeMode)) 995 { 996 usrerr("554 Cannot send 8-bit data to 7-bit destination"); 997 rcode = EX_DATAERR; 998 goto give_up; 999 } 1000 1001 /* check for Local Person Communication -- not for mortals!!! */ 1002 if (strcmp(m->m_mailer, "[LPC]") == 0) 1003 { 1004 mci = (MCI *) xalloc(sizeof *mci); 1005 bzero((char *) mci, sizeof *mci); 1006 mci->mci_in = stdin; 1007 mci->mci_out = stdout; 1008 mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 1009 mci->mci_mailer = m; 1010 } 1011 else if (strcmp(m->m_mailer, "[IPC]") == 0 || 1012 strcmp(m->m_mailer, "[TCP]") == 0) 1013 { 1014 #ifdef DAEMON 1015 register int i; 1016 register u_short port; 1017 1018 if (pv[0] == NULL || pv[1] == NULL || pv[1][0] == '\0') 1019 { 1020 syserr("null host name for %s mailer", m->m_mailer); 1021 rcode = EX_CONFIG; 1022 goto give_up; 1023 } 1024 1025 CurHostName = pv[1]; 1026 curhost = hostsignature(m, pv[1], e); 1027 1028 if (curhost == NULL || curhost[0] == '\0') 1029 { 1030 syserr("null host signature for %s", pv[1]); 1031 rcode = EX_CONFIG; 1032 goto give_up; 1033 } 1034 1035 if (!clever) 1036 { 1037 syserr("554 non-clever IPC"); 1038 rcode = EX_CONFIG; 1039 goto give_up; 1040 } 1041 if (pv[2] != NULL) 1042 port = atoi(pv[2]); 1043 else 1044 port = 0; 1045 tryhost: 1046 while (*curhost != '\0') 1047 { 1048 register char *p; 1049 static char hostbuf[MAXNAME]; 1050 1051 /* pull the next host from the signature */ 1052 p = strchr(curhost, ':'); 1053 if (p == NULL) 1054 p = &curhost[strlen(curhost)]; 1055 if (p == curhost) 1056 { 1057 syserr("deliver: null host name in signature"); 1058 curhost++; 1059 continue; 1060 } 1061 strncpy(hostbuf, curhost, p - curhost); 1062 hostbuf[p - curhost] = '\0'; 1063 if (*p != '\0') 1064 p++; 1065 curhost = p; 1066 1067 /* see if we already know that this host is fried */ 1068 CurHostName = hostbuf; 1069 mci = mci_get(hostbuf, m); 1070 if (mci->mci_state != MCIS_CLOSED) 1071 { 1072 if (tTd(11, 1)) 1073 { 1074 printf("openmailer: "); 1075 mci_dump(mci, FALSE); 1076 } 1077 CurHostName = mci->mci_host; 1078 message("Using cached connection to %s via %s...", 1079 hostbuf, m->m_name); 1080 break; 1081 } 1082 mci->mci_mailer = m; 1083 if (mci->mci_exitstat != EX_OK) 1084 continue; 1085 1086 /* try the connection */ 1087 setproctitle("%s %s: %s", e->e_id, hostbuf, "user open"); 1088 message("Connecting to %s via %s...", 1089 hostbuf, m->m_name); 1090 i = makeconnection(hostbuf, port, mci, 1091 bitnset(M_SECURE_PORT, m->m_flags)); 1092 mci->mci_exitstat = i; 1093 mci->mci_errno = errno; 1094 #if NAMED_BIND 1095 mci->mci_herrno = h_errno; 1096 #endif 1097 if (i == EX_OK) 1098 { 1099 mci->mci_state = MCIS_OPENING; 1100 mci_cache(mci); 1101 if (TrafficLogFile != NULL) 1102 fprintf(TrafficLogFile, "%05d == CONNECT %s\n", 1103 getpid(), hostbuf); 1104 break; 1105 } 1106 else if (tTd(11, 1)) 1107 printf("openmailer: makeconnection => stat=%d, errno=%d\n", 1108 i, errno); 1109 1110 /* enter status of this host */ 1111 setstat(i); 1112 1113 /* should print some message here for -v mode */ 1114 } 1115 if (mci == NULL) 1116 { 1117 syserr("deliver: no host name"); 1118 rcode = EX_OSERR; 1119 goto give_up; 1120 } 1121 mci->mci_pid = 0; 1122 #else /* no DAEMON */ 1123 syserr("554 openmailer: no IPC"); 1124 if (tTd(11, 1)) 1125 printf("openmailer: NULL\n"); 1126 rcode = EX_UNAVAILABLE; 1127 goto give_up; 1128 #endif /* DAEMON */ 1129 } 1130 else 1131 { 1132 /* flush any expired connections */ 1133 (void) mci_scan(NULL); 1134 1135 /* announce the connection to verbose listeners */ 1136 if (host == NULL || host[0] == '\0') 1137 message("Connecting to %s...", m->m_name); 1138 else 1139 message("Connecting to %s via %s...", host, m->m_name); 1140 if (TrafficLogFile != NULL) 1141 { 1142 char **av; 1143 1144 fprintf(TrafficLogFile, "%05d === EXEC", getpid()); 1145 for (av = pv; *av != NULL; av++) 1146 fprintf(TrafficLogFile, " %s", *av); 1147 fprintf(TrafficLogFile, "\n"); 1148 } 1149 1150 /* create a pipe to shove the mail through */ 1151 if (pipe(mpvect) < 0) 1152 { 1153 syserr("%s... openmailer(%s): pipe (to mailer)", 1154 e->e_to, m->m_name); 1155 if (tTd(11, 1)) 1156 printf("openmailer: NULL\n"); 1157 rcode = EX_OSERR; 1158 goto give_up; 1159 } 1160 1161 /* if this mailer speaks smtp, create a return pipe */ 1162 if (clever && pipe(rpvect) < 0) 1163 { 1164 syserr("%s... openmailer(%s): pipe (from mailer)", 1165 e->e_to, m->m_name); 1166 (void) close(mpvect[0]); 1167 (void) close(mpvect[1]); 1168 if (tTd(11, 1)) 1169 printf("openmailer: NULL\n"); 1170 rcode = EX_OSERR; 1171 goto give_up; 1172 } 1173 1174 /* 1175 ** Actually fork the mailer process. 1176 ** DOFORK is clever about retrying. 1177 ** 1178 ** Dispose of SIGCHLD signal catchers that may be laying 1179 ** around so that endmail will get it. 1180 */ 1181 1182 if (e->e_xfp != NULL) 1183 (void) fflush(e->e_xfp); /* for debugging */ 1184 (void) fflush(stdout); 1185 # ifdef SIGCHLD 1186 (void) setsignal(SIGCHLD, SIG_DFL); 1187 # endif /* SIGCHLD */ 1188 DOFORK(FORK); 1189 /* pid is set by DOFORK */ 1190 if (pid < 0) 1191 { 1192 /* failure */ 1193 syserr("%s... openmailer(%s): cannot fork", 1194 e->e_to, m->m_name); 1195 (void) close(mpvect[0]); 1196 (void) close(mpvect[1]); 1197 if (clever) 1198 { 1199 (void) close(rpvect[0]); 1200 (void) close(rpvect[1]); 1201 } 1202 if (tTd(11, 1)) 1203 printf("openmailer: NULL\n"); 1204 rcode = EX_OSERR; 1205 goto give_up; 1206 } 1207 else if (pid == 0) 1208 { 1209 int i; 1210 int saveerrno; 1211 char **ep; 1212 char *env[MAXUSERENVIRON]; 1213 extern char **environ; 1214 extern int DtableSize; 1215 1216 /* child -- set up input & exec mailer */ 1217 (void) setsignal(SIGINT, SIG_IGN); 1218 (void) setsignal(SIGHUP, SIG_IGN); 1219 (void) setsignal(SIGTERM, SIG_DFL); 1220 1221 /* reset user and group */ 1222 if (bitnset(M_SPECIFIC_UID, m->m_flags)) 1223 { 1224 (void) setgid(m->m_gid); 1225 (void) setuid(m->m_uid); 1226 } 1227 else if (ctladdr != NULL && ctladdr->q_uid != 0) 1228 { 1229 (void) initgroups(ctladdr->q_ruser? 1230 ctladdr->q_ruser: ctladdr->q_user, 1231 ctladdr->q_gid); 1232 (void) setgid(ctladdr->q_gid); 1233 (void) setuid(ctladdr->q_uid); 1234 } 1235 else 1236 { 1237 (void) initgroups(DefUser, DefGid); 1238 if (m->m_gid == 0) 1239 (void) setgid(DefGid); 1240 else 1241 (void) setgid(m->m_gid); 1242 if (m->m_uid == 0) 1243 (void) setuid(DefUid); 1244 else 1245 (void) setuid(m->m_uid); 1246 } 1247 1248 if (tTd(11, 2)) 1249 printf("openmailer: running as r/euid=%d/%d\n", 1250 getuid(), geteuid()); 1251 1252 /* move into some "safe" directory */ 1253 if (m->m_execdir != NULL) 1254 { 1255 char *p, *q; 1256 char buf[MAXLINE]; 1257 1258 for (p = m->m_execdir; p != NULL; p = q) 1259 { 1260 q = strchr(p, ':'); 1261 if (q != NULL) 1262 *q = '\0'; 1263 expand(p, buf, &buf[sizeof buf] - 1, e); 1264 if (q != NULL) 1265 *q++ = ':'; 1266 if (tTd(11, 20)) 1267 printf("openmailer: trydir %s\n", 1268 buf); 1269 if (buf[0] != '\0' && chdir(buf) >= 0) 1270 break; 1271 } 1272 } 1273 1274 /* arrange to filter std & diag output of command */ 1275 if (clever) 1276 { 1277 (void) close(rpvect[0]); 1278 if (dup2(rpvect[1], STDOUT_FILENO) < 0) 1279 { 1280 syserr("%s... openmailer(%s): cannot dup pipe %d for stdout", 1281 e->e_to, m->m_name, rpvect[1]); 1282 _exit(EX_OSERR); 1283 } 1284 (void) close(rpvect[1]); 1285 } 1286 else if (OpMode == MD_SMTP || OpMode == MD_DAEMON || 1287 HoldErrs || DisConnected) 1288 { 1289 /* put mailer output in transcript */ 1290 if (dup2(fileno(e->e_xfp), STDOUT_FILENO) < 0) 1291 { 1292 syserr("%s... openmailer(%s): cannot dup xscript %d for stdout", 1293 e->e_to, m->m_name, 1294 fileno(e->e_xfp)); 1295 _exit(EX_OSERR); 1296 } 1297 } 1298 if (dup2(STDOUT_FILENO, STDERR_FILENO) < 0) 1299 { 1300 syserr("%s... openmailer(%s): cannot dup stdout for stderr", 1301 e->e_to, m->m_name); 1302 _exit(EX_OSERR); 1303 } 1304 1305 /* arrange to get standard input */ 1306 (void) close(mpvect[1]); 1307 if (dup2(mpvect[0], STDIN_FILENO) < 0) 1308 { 1309 syserr("%s... openmailer(%s): cannot dup pipe %d for stdin", 1310 e->e_to, m->m_name, mpvect[0]); 1311 _exit(EX_OSERR); 1312 } 1313 (void) close(mpvect[0]); 1314 1315 /* arrange for all the files to be closed */ 1316 for (i = 3; i < DtableSize; i++) 1317 { 1318 register int j; 1319 1320 if ((j = fcntl(i, F_GETFD, 0)) != -1) 1321 (void) fcntl(i, F_SETFD, j | 1); 1322 } 1323 1324 /* 1325 ** Set up the mailer environment 1326 ** _FORCE_MAIL_LOCAL_ is DG-UX equiv of -d flag. 1327 ** TZ is timezone information. 1328 ** SYSTYPE is Apollo software sys type (required). 1329 ** ISP is Apollo hardware system type (required). 1330 */ 1331 1332 i = 0; 1333 env[i++] = "AGENT=sendmail"; 1334 env[i++] = "_FORCE_MAIL_LOCAL_=yes"; 1335 for (ep = environ; *ep != NULL; ep++) 1336 { 1337 if (strncmp(*ep, "TZ=", 3) == 0 || 1338 strncmp(*ep, "ISP=", 4) == 0 || 1339 strncmp(*ep, "SYSTYPE=", 8) == 0) 1340 env[i++] = *ep; 1341 } 1342 env[i] = NULL; 1343 1344 /* run disconnected from terminal */ 1345 (void) setsid(); 1346 1347 /* try to execute the mailer */ 1348 execve(m->m_mailer, pv, env); 1349 saveerrno = errno; 1350 syserr("Cannot exec %s", m->m_mailer); 1351 if (bitnset(M_LOCALMAILER, m->m_flags) || 1352 transienterror(saveerrno)) 1353 _exit(EX_OSERR); 1354 _exit(EX_UNAVAILABLE); 1355 } 1356 1357 /* 1358 ** Set up return value. 1359 */ 1360 1361 mci = (MCI *) xalloc(sizeof *mci); 1362 bzero((char *) mci, sizeof *mci); 1363 mci->mci_mailer = m; 1364 mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 1365 mci->mci_pid = pid; 1366 (void) close(mpvect[0]); 1367 mci->mci_out = fdopen(mpvect[1], "w"); 1368 if (mci->mci_out == NULL) 1369 { 1370 syserr("deliver: cannot create mailer output channel, fd=%d", 1371 mpvect[1]); 1372 (void) close(mpvect[1]); 1373 if (clever) 1374 { 1375 (void) close(rpvect[0]); 1376 (void) close(rpvect[1]); 1377 } 1378 rcode = EX_OSERR; 1379 goto give_up; 1380 } 1381 if (clever) 1382 { 1383 (void) close(rpvect[1]); 1384 mci->mci_in = fdopen(rpvect[0], "r"); 1385 if (mci->mci_in == NULL) 1386 { 1387 syserr("deliver: cannot create mailer input channel, fd=%d", 1388 mpvect[1]); 1389 (void) close(rpvect[0]); 1390 fclose(mci->mci_out); 1391 mci->mci_out = NULL; 1392 rcode = EX_OSERR; 1393 goto give_up; 1394 } 1395 } 1396 else 1397 { 1398 mci->mci_flags |= MCIF_TEMP; 1399 mci->mci_in = NULL; 1400 } 1401 } 1402 1403 /* 1404 ** If we are in SMTP opening state, send initial protocol. 1405 */ 1406 1407 if (clever && mci->mci_state != MCIS_CLOSED) 1408 { 1409 smtpinit(m, mci, e); 1410 } 1411 1412 if (bitset(EF_HAS8BIT, e->e_flags) && bitnset(M_7BITS, m->m_flags)) 1413 mci->mci_flags |= MCIF_CVT8TO7; 1414 else 1415 mci->mci_flags &= ~MCIF_CVT8TO7; 1416 1417 if (tTd(11, 1)) 1418 { 1419 printf("openmailer: "); 1420 mci_dump(mci, FALSE); 1421 } 1422 1423 if (mci->mci_state != MCIS_OPEN) 1424 { 1425 /* couldn't open the mailer */ 1426 rcode = mci->mci_exitstat; 1427 errno = mci->mci_errno; 1428 #if NAMED_BIND 1429 h_errno = mci->mci_herrno; 1430 #endif 1431 if (rcode == EX_OK) 1432 { 1433 /* shouldn't happen */ 1434 syserr("554 deliver: rcode=%d, mci_state=%d, sig=%s", 1435 rcode, mci->mci_state, firstsig); 1436 rcode = EX_SOFTWARE; 1437 } 1438 else if (rcode == EX_TEMPFAIL && curhost != NULL && *curhost != '\0') 1439 { 1440 /* try next MX site */ 1441 goto tryhost; 1442 } 1443 } 1444 else if (!clever) 1445 { 1446 /* 1447 ** Format and send message. 1448 */ 1449 1450 putfromline(mci, e); 1451 (*e->e_puthdr)(mci, e->e_header, e, 0); 1452 (*e->e_putbody)(mci, e, NULL, 0); 1453 1454 /* get the exit status */ 1455 rcode = endmailer(mci, e, pv); 1456 } 1457 else 1458 #ifdef SMTP 1459 { 1460 /* 1461 ** Send the MAIL FROM: protocol 1462 */ 1463 1464 rcode = smtpmailfrom(m, mci, e); 1465 if (rcode == EX_OK) 1466 { 1467 register char *t = tobuf; 1468 register int i; 1469 1470 /* send the recipient list */ 1471 tobuf[0] = '\0'; 1472 for (to = tochain; to != NULL; to = to->q_tchain) 1473 { 1474 e->e_to = to->q_paddr; 1475 if ((i = smtprcpt(to, m, mci, e)) != EX_OK) 1476 { 1477 markfailure(e, to, mci, i); 1478 giveresponse(i, m, mci, ctladdr, xstart, e); 1479 } 1480 else 1481 { 1482 *t++ = ','; 1483 for (p = to->q_paddr; *p; *t++ = *p++) 1484 continue; 1485 *t = '\0'; 1486 } 1487 } 1488 1489 /* now send the data */ 1490 if (tobuf[0] == '\0') 1491 { 1492 rcode = EX_OK; 1493 e->e_to = NULL; 1494 if (bitset(MCIF_CACHED, mci->mci_flags)) 1495 smtprset(m, mci, e); 1496 } 1497 else 1498 { 1499 e->e_to = tobuf + 1; 1500 rcode = smtpdata(m, mci, e); 1501 } 1502 1503 /* now close the connection */ 1504 if (!bitset(MCIF_CACHED, mci->mci_flags)) 1505 smtpquit(m, mci, e); 1506 } 1507 if (rcode != EX_OK && curhost != NULL && *curhost != '\0') 1508 { 1509 /* try next MX site */ 1510 goto tryhost; 1511 } 1512 } 1513 #else /* not SMTP */ 1514 { 1515 syserr("554 deliver: need SMTP compiled to use clever mailer"); 1516 rcode = EX_CONFIG; 1517 goto give_up; 1518 } 1519 #endif /* SMTP */ 1520 #if NAMED_BIND 1521 if (ConfigLevel < 2) 1522 _res.options |= RES_DEFNAMES | RES_DNSRCH; /* XXX */ 1523 #endif 1524 1525 /* arrange a return receipt if requested */ 1526 if (rcode == EX_OK && e->e_receiptto != NULL && 1527 bitnset(M_LOCALMAILER, m->m_flags)) 1528 { 1529 e->e_flags |= EF_SENDRECEIPT; 1530 /* do we want to send back more info? */ 1531 } 1532 1533 /* 1534 ** Do final status disposal. 1535 ** We check for something in tobuf for the SMTP case. 1536 ** If we got a temporary failure, arrange to queue the 1537 ** addressees. 1538 */ 1539 1540 give_up: 1541 if (tobuf[0] != '\0') 1542 giveresponse(rcode, m, mci, ctladdr, xstart, e); 1543 for (to = tochain; to != NULL; to = to->q_tchain) 1544 { 1545 if (rcode != EX_OK) 1546 markfailure(e, to, mci, rcode); 1547 else 1548 { 1549 to->q_flags |= QSENT; 1550 to->q_statdate = curtime(); 1551 e->e_nsent++; 1552 if (bitnset(M_LOCALMAILER, m->m_flags) && 1553 (e->e_receiptto != NULL || 1554 bitset(QPINGONSUCCESS, to->q_flags))) 1555 { 1556 to->q_flags |= QREPORT; 1557 fprintf(e->e_xfp, "%s... Successfully delivered\n", 1558 to->q_paddr); 1559 } 1560 } 1561 } 1562 1563 /* 1564 ** Restore state and return. 1565 */ 1566 1567 #ifdef XDEBUG 1568 { 1569 char wbuf[MAXLINE]; 1570 1571 /* make absolutely certain 0, 1, and 2 are in use */ 1572 sprintf(wbuf, "%s... end of deliver(%s)", 1573 e->e_to == NULL ? "NO-TO-LIST" : e->e_to, 1574 m->m_name); 1575 checkfd012(wbuf); 1576 } 1577 #endif 1578 1579 errno = 0; 1580 define('g', (char *) NULL, e); 1581 return (rcode); 1582 } 1583 /* 1584 ** MARKFAILURE -- mark a failure on a specific address. 1585 ** 1586 ** Parameters: 1587 ** e -- the envelope we are sending. 1588 ** q -- the address to mark. 1589 ** mci -- mailer connection information. 1590 ** rcode -- the code signifying the particular failure. 1591 ** 1592 ** Returns: 1593 ** none. 1594 ** 1595 ** Side Effects: 1596 ** marks the address (and possibly the envelope) with the 1597 ** failure so that an error will be returned or 1598 ** the message will be queued, as appropriate. 1599 */ 1600 1601 markfailure(e, q, mci, rcode) 1602 register ENVELOPE *e; 1603 register ADDRESS *q; 1604 register MCI *mci; 1605 int rcode; 1606 { 1607 char *stat = NULL; 1608 1609 switch (rcode) 1610 { 1611 case EX_OK: 1612 break; 1613 1614 case EX_TEMPFAIL: 1615 case EX_IOERR: 1616 case EX_OSERR: 1617 q->q_flags |= QQUEUEUP; 1618 break; 1619 1620 default: 1621 q->q_flags |= QBADADDR; 1622 break; 1623 } 1624 1625 if (q->q_status == NULL && mci != NULL) 1626 q->q_status = mci->mci_status; 1627 switch (rcode) 1628 { 1629 case EX_USAGE: 1630 stat = "550"; 1631 break; 1632 1633 case EX_DATAERR: 1634 stat = "501"; 1635 break; 1636 1637 case EX_NOINPUT: 1638 case EX_NOUSER: 1639 case EX_NOHOST: 1640 case EX_CANTCREAT: 1641 case EX_NOPERM: 1642 stat = "550"; 1643 break; 1644 1645 case EX_UNAVAILABLE: 1646 case EX_SOFTWARE: 1647 case EX_OSFILE: 1648 case EX_PROTOCOL: 1649 case EX_CONFIG: 1650 stat = "554"; 1651 break; 1652 1653 case EX_OSERR: 1654 case EX_IOERR: 1655 stat = "451"; 1656 break; 1657 1658 case EX_TEMPFAIL: 1659 stat = "426"; 1660 break; 1661 } 1662 if (stat != NULL && q->q_status == NULL) 1663 q->q_status = stat; 1664 1665 q->q_statdate = curtime(); 1666 if (CurHostName != NULL && CurHostName[0] != '\0') 1667 q->q_statmta = newstr(CurHostName); 1668 if (rcode != EX_OK && q->q_rstatus == NULL) 1669 { 1670 char buf[30]; 1671 1672 (void) sprintf(buf, "%d", rcode); 1673 q->q_rstatus = newstr(buf); 1674 } 1675 } 1676 /* 1677 ** ENDMAILER -- Wait for mailer to terminate. 1678 ** 1679 ** We should never get fatal errors (e.g., segmentation 1680 ** violation), so we report those specially. For other 1681 ** errors, we choose a status message (into statmsg), 1682 ** and if it represents an error, we print it. 1683 ** 1684 ** Parameters: 1685 ** pid -- pid of mailer. 1686 ** e -- the current envelope. 1687 ** pv -- the parameter vector that invoked the mailer 1688 ** (for error messages). 1689 ** 1690 ** Returns: 1691 ** exit code of mailer. 1692 ** 1693 ** Side Effects: 1694 ** none. 1695 */ 1696 1697 endmailer(mci, e, pv) 1698 register MCI *mci; 1699 register ENVELOPE *e; 1700 char **pv; 1701 { 1702 int st; 1703 1704 /* close any connections */ 1705 if (mci->mci_in != NULL) 1706 (void) xfclose(mci->mci_in, mci->mci_mailer->m_name, "mci_in"); 1707 if (mci->mci_out != NULL) 1708 (void) xfclose(mci->mci_out, mci->mci_mailer->m_name, "mci_out"); 1709 mci->mci_in = mci->mci_out = NULL; 1710 mci->mci_state = MCIS_CLOSED; 1711 1712 /* in the IPC case there is nothing to wait for */ 1713 if (mci->mci_pid == 0) 1714 return (EX_OK); 1715 1716 /* wait for the mailer process to die and collect status */ 1717 st = waitfor(mci->mci_pid); 1718 if (st == -1) 1719 { 1720 syserr("endmailer %s: wait", pv[0]); 1721 return (EX_SOFTWARE); 1722 } 1723 1724 if (WIFEXITED(st)) 1725 { 1726 /* normal death -- return status */ 1727 return (WEXITSTATUS(st)); 1728 } 1729 1730 /* it died a horrid death */ 1731 syserr("451 mailer %s died with signal %o", 1732 mci->mci_mailer->m_name, st); 1733 1734 /* log the arguments */ 1735 if (pv != NULL && e->e_xfp != NULL) 1736 { 1737 register char **av; 1738 1739 fprintf(e->e_xfp, "Arguments:"); 1740 for (av = pv; *av != NULL; av++) 1741 fprintf(e->e_xfp, " %s", *av); 1742 fprintf(e->e_xfp, "\n"); 1743 } 1744 1745 ExitStat = EX_TEMPFAIL; 1746 return (EX_TEMPFAIL); 1747 } 1748 /* 1749 ** GIVERESPONSE -- Interpret an error response from a mailer 1750 ** 1751 ** Parameters: 1752 ** stat -- the status code from the mailer (high byte 1753 ** only; core dumps must have been taken care of 1754 ** already). 1755 ** m -- the mailer info for this mailer. 1756 ** mci -- the mailer connection info -- can be NULL if the 1757 ** response is given before the connection is made. 1758 ** ctladdr -- the controlling address for the recipient 1759 ** address(es). 1760 ** xstart -- the transaction start time, for computing 1761 ** transaction delays. 1762 ** e -- the current envelope. 1763 ** 1764 ** Returns: 1765 ** none. 1766 ** 1767 ** Side Effects: 1768 ** Errors may be incremented. 1769 ** ExitStat may be set. 1770 */ 1771 1772 giveresponse(stat, m, mci, ctladdr, xstart, e) 1773 int stat; 1774 register MAILER *m; 1775 register MCI *mci; 1776 ADDRESS *ctladdr; 1777 time_t xstart; 1778 ENVELOPE *e; 1779 { 1780 register const char *statmsg; 1781 extern char *SysExMsg[]; 1782 register int i; 1783 extern int N_SysEx; 1784 char buf[MAXLINE]; 1785 1786 /* 1787 ** Compute status message from code. 1788 */ 1789 1790 i = stat - EX__BASE; 1791 if (stat == 0) 1792 { 1793 statmsg = "250 Sent"; 1794 if (e->e_statmsg != NULL) 1795 { 1796 (void) sprintf(buf, "%s (%s)", statmsg, e->e_statmsg); 1797 statmsg = buf; 1798 } 1799 } 1800 else if (i < 0 || i > N_SysEx) 1801 { 1802 (void) sprintf(buf, "554 unknown mailer error %d", stat); 1803 stat = EX_UNAVAILABLE; 1804 statmsg = buf; 1805 } 1806 else if (stat == EX_TEMPFAIL) 1807 { 1808 (void) strcpy(buf, SysExMsg[i] + 1); 1809 #if NAMED_BIND 1810 if (h_errno == TRY_AGAIN) 1811 statmsg = errstring(h_errno+E_DNSBASE); 1812 else 1813 #endif 1814 { 1815 if (errno != 0) 1816 statmsg = errstring(errno); 1817 else 1818 { 1819 #ifdef SMTP 1820 statmsg = SmtpError; 1821 #else /* SMTP */ 1822 statmsg = NULL; 1823 #endif /* SMTP */ 1824 } 1825 } 1826 if (statmsg != NULL && statmsg[0] != '\0') 1827 { 1828 (void) strcat(buf, ": "); 1829 (void) strcat(buf, statmsg); 1830 } 1831 statmsg = buf; 1832 } 1833 #if NAMED_BIND 1834 else if (stat == EX_NOHOST && h_errno != 0) 1835 { 1836 statmsg = errstring(h_errno + E_DNSBASE); 1837 (void) sprintf(buf, "%s (%s)", SysExMsg[i] + 1, statmsg); 1838 statmsg = buf; 1839 } 1840 #endif 1841 else 1842 { 1843 statmsg = SysExMsg[i]; 1844 if (*statmsg++ == ':') 1845 { 1846 (void) sprintf(buf, "%s: %s", statmsg, errstring(errno)); 1847 statmsg = buf; 1848 } 1849 } 1850 1851 /* 1852 ** Print the message as appropriate 1853 */ 1854 1855 if (stat == EX_OK || stat == EX_TEMPFAIL) 1856 { 1857 extern char MsgBuf[]; 1858 1859 message("%s", &statmsg[4]); 1860 if (stat == EX_TEMPFAIL && e->e_xfp != NULL) 1861 fprintf(e->e_xfp, "%s\n", &MsgBuf[4]); 1862 } 1863 else 1864 { 1865 char mbuf[8]; 1866 1867 Errors++; 1868 sprintf(mbuf, "%.3s %%s", statmsg); 1869 usrerr(mbuf, &statmsg[4]); 1870 } 1871 1872 /* 1873 ** Final cleanup. 1874 ** Log a record of the transaction. Compute the new 1875 ** ExitStat -- if we already had an error, stick with 1876 ** that. 1877 */ 1878 1879 if (LogLevel > ((stat == EX_TEMPFAIL) ? 8 : (stat == EX_OK) ? 7 : 6)) 1880 logdelivery(m, mci, &statmsg[4], ctladdr, xstart, e); 1881 1882 if (tTd(11, 2)) 1883 printf("giveresponse: stat=%d, e->e_message=%s\n", 1884 stat, e->e_message == NULL ? "<NULL>" : e->e_message); 1885 1886 if (stat != EX_TEMPFAIL) 1887 setstat(stat); 1888 if (stat != EX_OK && (stat != EX_TEMPFAIL || e->e_message == NULL)) 1889 { 1890 if (e->e_message != NULL) 1891 free(e->e_message); 1892 e->e_message = newstr(&statmsg[4]); 1893 } 1894 errno = 0; 1895 #if NAMED_BIND 1896 h_errno = 0; 1897 #endif 1898 } 1899 /* 1900 ** LOGDELIVERY -- log the delivery in the system log 1901 ** 1902 ** Care is taken to avoid logging lines that are too long, because 1903 ** some versions of syslog have an unfortunate proclivity for core 1904 ** dumping. This is a hack, to be sure, that is at best empirical. 1905 ** 1906 ** Parameters: 1907 ** m -- the mailer info. Can be NULL for initial queue. 1908 ** mci -- the mailer connection info -- can be NULL if the 1909 ** log is occuring when no connection is active. 1910 ** stat -- the message to print for the status. 1911 ** ctladdr -- the controlling address for the to list. 1912 ** xstart -- the transaction start time, used for 1913 ** computing transaction delay. 1914 ** e -- the current envelope. 1915 ** 1916 ** Returns: 1917 ** none 1918 ** 1919 ** Side Effects: 1920 ** none 1921 */ 1922 1923 logdelivery(m, mci, stat, ctladdr, xstart, e) 1924 MAILER *m; 1925 register MCI *mci; 1926 char *stat; 1927 ADDRESS *ctladdr; 1928 time_t xstart; 1929 register ENVELOPE *e; 1930 { 1931 # ifdef LOG 1932 register char *bp; 1933 register char *p; 1934 int l; 1935 char buf[512]; 1936 1937 # if (SYSLOG_BUFSIZE) >= 256 1938 bp = buf; 1939 if (ctladdr != NULL) 1940 { 1941 strcpy(bp, ", ctladdr="); 1942 strcat(bp, shortenstring(ctladdr->q_paddr, 83)); 1943 bp += strlen(bp); 1944 if (bitset(QGOODUID, ctladdr->q_flags)) 1945 { 1946 (void) sprintf(bp, " (%d/%d)", 1947 ctladdr->q_uid, ctladdr->q_gid); 1948 bp += strlen(bp); 1949 } 1950 } 1951 1952 sprintf(bp, ", delay=%s", pintvl(curtime() - e->e_ctime, TRUE)); 1953 bp += strlen(bp); 1954 1955 if (xstart != (time_t) 0) 1956 { 1957 sprintf(bp, ", xdelay=%s", pintvl(curtime() - xstart, TRUE)); 1958 bp += strlen(bp); 1959 } 1960 1961 if (m != NULL) 1962 { 1963 (void) strcpy(bp, ", mailer="); 1964 (void) strcat(bp, m->m_name); 1965 bp += strlen(bp); 1966 } 1967 1968 if (mci != NULL && mci->mci_host != NULL) 1969 { 1970 # ifdef DAEMON 1971 extern SOCKADDR CurHostAddr; 1972 # endif 1973 1974 (void) strcpy(bp, ", relay="); 1975 (void) strcat(bp, mci->mci_host); 1976 1977 # ifdef DAEMON 1978 (void) strcat(bp, " ["); 1979 (void) strcat(bp, anynet_ntoa(&CurHostAddr)); 1980 (void) strcat(bp, "]"); 1981 # endif 1982 } 1983 else if (strcmp(stat, "queued") != 0) 1984 { 1985 char *p = macvalue('h', e); 1986 1987 if (p != NULL && p[0] != '\0') 1988 { 1989 (void) strcpy(bp, ", relay="); 1990 (void) strcat(bp, p); 1991 } 1992 } 1993 bp += strlen(bp); 1994 1995 #define STATLEN (((SYSLOG_BUFSIZE) - 100) / 4) 1996 #if (STATLEN) < 63 1997 # undef STATLEN 1998 # define STATLEN 63 1999 #endif 2000 #if (STATLEN) > 203 2001 # undef STATLEN 2002 # define STATLEN 203 2003 #endif 2004 2005 if ((bp - buf) > (sizeof buf - ((STATLEN) + 20))) 2006 { 2007 /* desperation move -- truncate data */ 2008 bp = buf + sizeof buf - ((STATLEN) + 17); 2009 strcpy(bp, "..."); 2010 bp += 3; 2011 } 2012 2013 (void) strcpy(bp, ", stat="); 2014 bp += strlen(bp); 2015 2016 (void) strcpy(bp, shortenstring(stat, (STATLEN))); 2017 2018 l = SYSLOG_BUFSIZE - 100 - strlen(buf); 2019 p = e->e_to; 2020 while (strlen(p) >= l) 2021 { 2022 register char *q = strchr(p + l, ','); 2023 2024 if (q == NULL) 2025 break; 2026 syslog(LOG_INFO, "%s: to=%.*s [more]%s", 2027 e->e_id, ++q - p, p, buf); 2028 p = q; 2029 } 2030 syslog(LOG_INFO, "%s: to=%s%s", e->e_id, p, buf); 2031 2032 # else /* we have a very short log buffer size */ 2033 2034 l = SYSLOG_BUFSIZE - 85; 2035 p = e->e_to; 2036 while (strlen(p) >= l) 2037 { 2038 register char *q = strchr(p + l, ','); 2039 2040 if (q == NULL) 2041 break; 2042 syslog(LOG_INFO, "%s: to=%.*s [more]", 2043 e->e_id, ++q - p, p); 2044 p = q; 2045 } 2046 syslog(LOG_INFO, "%s: to=%s", e->e_id, p); 2047 2048 if (ctladdr != NULL) 2049 { 2050 bp = buf; 2051 strcpy(buf, "ctladdr="); 2052 bp += strlen(buf); 2053 strcpy(bp, shortenstring(ctladdr->q_paddr, 83)); 2054 bp += strlen(buf); 2055 if (bitset(QGOODUID, ctladdr->q_flags)) 2056 { 2057 (void) sprintf(bp, " (%d/%d)", 2058 ctladdr->q_uid, ctladdr->q_gid); 2059 bp += strlen(bp); 2060 } 2061 syslog(LOG_INFO, "%s: %s", e->e_id, buf); 2062 } 2063 bp = buf; 2064 sprintf(bp, "delay=%s", pintvl(curtime() - e->e_ctime, TRUE)); 2065 bp += strlen(bp); 2066 if (xstart != (time_t) 0) 2067 { 2068 sprintf(bp, ", xdelay=%s", pintvl(curtime() - xstart, TRUE)); 2069 bp += strlen(bp); 2070 } 2071 2072 if (m != NULL) 2073 { 2074 sprintf(bp, ", mailer=%s", m->m_name); 2075 bp += strlen(bp); 2076 } 2077 syslog(LOG_INFO, "%s: %s", e->e_id, buf); 2078 2079 buf[0] = '\0'; 2080 if (mci != NULL && mci->mci_host != NULL) 2081 { 2082 # ifdef DAEMON 2083 extern SOCKADDR CurHostAddr; 2084 # endif 2085 2086 sprintf(buf, "relay=%s", mci->mci_host); 2087 2088 # ifdef DAEMON 2089 (void) strcat(buf, " ["); 2090 (void) strcat(buf, anynet_ntoa(&CurHostAddr)); 2091 (void) strcat(buf, "]"); 2092 # endif 2093 } 2094 else if (strcmp(stat, "queued") != 0) 2095 { 2096 char *p = macvalue('h', e); 2097 2098 if (p != NULL && p[0] != '\0') 2099 sprintf(buf, "relay=%s", p); 2100 } 2101 if (buf[0] != '\0') 2102 syslog(LOG_INFO, "%s: %s", e->e_id, buf); 2103 2104 syslog(LOG_INFO, "%s: stat=%s", e->e_id, shortenstring(stat, 63)); 2105 # endif /* short log buffer */ 2106 # endif /* LOG */ 2107 } 2108 /* 2109 ** PUTFROMLINE -- output a UNIX-style from line (or whatever) 2110 ** 2111 ** This can be made an arbitrary message separator by changing $l 2112 ** 2113 ** One of the ugliest hacks seen by human eyes is contained herein: 2114 ** UUCP wants those stupid "remote from <host>" lines. Why oh why 2115 ** does a well-meaning programmer such as myself have to deal with 2116 ** this kind of antique garbage???? 2117 ** 2118 ** Parameters: 2119 ** mci -- the connection information. 2120 ** e -- the envelope. 2121 ** 2122 ** Returns: 2123 ** none 2124 ** 2125 ** Side Effects: 2126 ** outputs some text to fp. 2127 */ 2128 2129 putfromline(mci, e) 2130 register MCI *mci; 2131 ENVELOPE *e; 2132 { 2133 char *template = "\201l\n"; 2134 char buf[MAXLINE]; 2135 2136 if (bitnset(M_NHDR, mci->mci_mailer->m_flags)) 2137 return; 2138 2139 # ifdef UGLYUUCP 2140 if (bitnset(M_UGLYUUCP, mci->mci_mailer->m_flags)) 2141 { 2142 char *bang; 2143 char xbuf[MAXLINE]; 2144 2145 expand("\201g", buf, &buf[sizeof buf - 1], e); 2146 bang = strchr(buf, '!'); 2147 if (bang == NULL) 2148 { 2149 errno = 0; 2150 syserr("554 No ! in UUCP From address! (%s given)", buf); 2151 } 2152 else 2153 { 2154 *bang++ = '\0'; 2155 (void) sprintf(xbuf, "From %s \201d remote from %s\n", bang, buf); 2156 template = xbuf; 2157 } 2158 } 2159 # endif /* UGLYUUCP */ 2160 expand(template, buf, &buf[sizeof buf - 1], e); 2161 putline(buf, mci); 2162 } 2163 /* 2164 ** PUTBODY -- put the body of a message. 2165 ** 2166 ** Parameters: 2167 ** mci -- the connection information. 2168 ** e -- the envelope to put out. 2169 ** separator -- if non-NULL, a message separator that must 2170 ** not be permitted in the resulting message. 2171 ** flags -- to modify the behaviour. 2172 ** 2173 ** Returns: 2174 ** none. 2175 ** 2176 ** Side Effects: 2177 ** The message is written onto fp. 2178 */ 2179 2180 /* values for output state variable */ 2181 #define OS_HEAD 0 /* at beginning of line */ 2182 #define OS_CR 1 /* read a carriage return */ 2183 #define OS_INLINE 2 /* putting rest of line */ 2184 2185 putbody(mci, e, separator, flags) 2186 register MCI *mci; 2187 register ENVELOPE *e; 2188 char *separator; 2189 int flags; 2190 { 2191 char buf[MAXLINE]; 2192 2193 /* 2194 ** Output the body of the message 2195 */ 2196 2197 if (e->e_dfp == NULL && e->e_df != NULL) 2198 { 2199 e->e_dfp = fopen(e->e_df, "r"); 2200 if (e->e_dfp == NULL) 2201 syserr("putbody: Cannot open %s for %s from %s", 2202 e->e_df, e->e_to, e->e_from.q_paddr); 2203 } 2204 if (e->e_dfp == NULL) 2205 { 2206 if (bitset(MCIF_INHEADER, mci->mci_flags)) 2207 { 2208 putline("", mci); 2209 mci->mci_flags &= ~MCIF_INHEADER; 2210 } 2211 putline("<<< No Message Collected >>>", mci); 2212 goto endofmessage; 2213 } 2214 if (e->e_dfino == (ino_t) 0) 2215 { 2216 struct stat stbuf; 2217 2218 if (fstat(fileno(e->e_dfp), &stbuf) < 0) 2219 e->e_dfino = -1; 2220 else 2221 { 2222 e->e_dfdev = stbuf.st_dev; 2223 e->e_dfino = stbuf.st_ino; 2224 } 2225 } 2226 rewind(e->e_dfp); 2227 2228 if (bitset(MCIF_CVT8TO7, mci->mci_flags)) 2229 { 2230 /* 2231 ** Do 8 to 7 bit MIME conversion. 2232 */ 2233 2234 /* make sure it looks like a MIME message */ 2235 if (hvalue("MIME-Version", e->e_header) == NULL) 2236 putline("MIME-Version: 1.0", mci); 2237 2238 if (hvalue("Content-Type", e->e_header) == NULL) 2239 { 2240 sprintf(buf, "Content-Type: text/plain; charset=%s", 2241 defcharset(e)); 2242 putline(buf, mci); 2243 } 2244 2245 /* now do the hard work */ 2246 mime8to7(mci, e->e_header, e, NULL); 2247 } 2248 else 2249 { 2250 int ostate; 2251 register char *bp; 2252 register char *pbp; 2253 register int c; 2254 int padc; 2255 char *buflim; 2256 int pos; 2257 char peekbuf[10]; 2258 2259 /* we can pass it through unmodified */ 2260 if (bitset(MCIF_INHEADER, mci->mci_flags)) 2261 { 2262 putline("", mci); 2263 mci->mci_flags &= ~MCIF_INHEADER; 2264 } 2265 2266 /* determine end of buffer; allow for short mailer lines */ 2267 buflim = &buf[sizeof buf - 1]; 2268 if (mci->mci_mailer->m_linelimit > 0 && 2269 mci->mci_mailer->m_linelimit < sizeof buf - 1) 2270 buflim = &buf[mci->mci_mailer->m_linelimit - 1]; 2271 2272 /* copy temp file to output with mapping */ 2273 ostate = OS_HEAD; 2274 bp = buf; 2275 pbp = peekbuf; 2276 while (!ferror(mci->mci_out)) 2277 { 2278 register char *xp; 2279 2280 if (pbp > peekbuf) 2281 c = *--pbp; 2282 else if ((c = fgetc(e->e_dfp)) == EOF) 2283 break; 2284 if (bitset(MCIF_7BIT, mci->mci_flags)) 2285 c &= 0x7f; 2286 switch (ostate) 2287 { 2288 case OS_HEAD: 2289 if (c != '\r' && c != '\n' && bp < buflim) 2290 { 2291 *bp++ = c; 2292 break; 2293 } 2294 2295 /* check beginning of line for special cases */ 2296 *bp = '\0'; 2297 pos = 0; 2298 padc = EOF; 2299 if (buf[0] == 'F' && 2300 bitnset(M_ESCFROM, mci->mci_mailer->m_flags) && 2301 strncmp(buf, "From ", 5) == 0) 2302 { 2303 padc = '>'; 2304 } 2305 if (buf[0] == '-' && buf[1] == '-' && 2306 separator != NULL) 2307 { 2308 /* possible separator */ 2309 int sl = strlen(separator); 2310 2311 if (strncmp(&buf[2], separator, sl) == 0) 2312 padc = ' '; 2313 } 2314 if (buf[0] == '.' && 2315 bitnset(M_XDOT, mci->mci_mailer->m_flags)) 2316 { 2317 padc = '.'; 2318 } 2319 2320 /* now copy out saved line */ 2321 if (TrafficLogFile != NULL) 2322 { 2323 fprintf(TrafficLogFile, "%05d >>> ", getpid()); 2324 if (padc != EOF) 2325 fputc(padc, TrafficLogFile); 2326 for (xp = buf; xp < bp; xp++) 2327 fputc(*xp, TrafficLogFile); 2328 if (c == '\n') 2329 fputs(mci->mci_mailer->m_eol, 2330 TrafficLogFile); 2331 } 2332 if (padc != EOF) 2333 { 2334 fputc(padc, mci->mci_out); 2335 pos++; 2336 } 2337 for (xp = buf; xp < bp; xp++) 2338 fputc(*xp, mci->mci_out); 2339 if (c == '\n') 2340 { 2341 fputs(mci->mci_mailer->m_eol, 2342 mci->mci_out); 2343 pos = 0; 2344 } 2345 else 2346 { 2347 pos += bp - buf; 2348 if (c != '\r') 2349 *pbp++ = c; 2350 } 2351 bp = buf; 2352 2353 /* determine next state */ 2354 if (c == '\n') 2355 ostate = OS_HEAD; 2356 else if (c == '\r') 2357 ostate = OS_CR; 2358 else 2359 ostate = OS_INLINE; 2360 continue; 2361 2362 case OS_CR: 2363 if (c == '\n') 2364 { 2365 /* got CRLF */ 2366 fputs(mci->mci_mailer->m_eol, mci->mci_out); 2367 if (TrafficLogFile != NULL) 2368 { 2369 fputs(mci->mci_mailer->m_eol, 2370 TrafficLogFile); 2371 } 2372 ostate = OS_HEAD; 2373 continue; 2374 } 2375 2376 /* had a naked carriage return */ 2377 *pbp++ = c; 2378 c = '\r'; 2379 goto putch; 2380 2381 case OS_INLINE: 2382 if (c == '\r') 2383 { 2384 ostate = OS_CR; 2385 continue; 2386 } 2387 putch: 2388 if (mci->mci_mailer->m_linelimit > 0 && 2389 pos > mci->mci_mailer->m_linelimit && 2390 c != '\n') 2391 { 2392 putc('!', mci->mci_out); 2393 fputs(mci->mci_mailer->m_eol, mci->mci_out); 2394 if (TrafficLogFile != NULL) 2395 { 2396 fprintf(TrafficLogFile, "!%s", 2397 mci->mci_mailer->m_eol); 2398 } 2399 ostate = OS_HEAD; 2400 *pbp++ = c; 2401 continue; 2402 } 2403 if (TrafficLogFile != NULL) 2404 fputc(c, TrafficLogFile); 2405 putc(c, mci->mci_out); 2406 pos++; 2407 ostate = c == '\n' ? OS_HEAD : OS_INLINE; 2408 break; 2409 } 2410 } 2411 } 2412 2413 if (ferror(e->e_dfp)) 2414 { 2415 syserr("putbody: %s: read error", e->e_df); 2416 ExitStat = EX_IOERR; 2417 } 2418 2419 endofmessage: 2420 /* some mailers want extra blank line at end of message */ 2421 if (bitnset(M_BLANKEND, mci->mci_mailer->m_flags) && 2422 buf[0] != '\0' && buf[0] != '\n') 2423 putline("", mci); 2424 2425 (void) fflush(mci->mci_out); 2426 if (ferror(mci->mci_out) && errno != EPIPE) 2427 { 2428 syserr("putbody: write error"); 2429 ExitStat = EX_IOERR; 2430 } 2431 errno = 0; 2432 } 2433 /* 2434 ** MAILFILE -- Send a message to a file. 2435 ** 2436 ** If the file has the setuid/setgid bits set, but NO execute 2437 ** bits, sendmail will try to become the owner of that file 2438 ** rather than the real user. Obviously, this only works if 2439 ** sendmail runs as root. 2440 ** 2441 ** This could be done as a subordinate mailer, except that it 2442 ** is used implicitly to save messages in ~/dead.letter. We 2443 ** view this as being sufficiently important as to include it 2444 ** here. For example, if the system is dying, we shouldn't have 2445 ** to create another process plus some pipes to save the message. 2446 ** 2447 ** Parameters: 2448 ** filename -- the name of the file to send to. 2449 ** ctladdr -- the controlling address header -- includes 2450 ** the userid/groupid to be when sending. 2451 ** 2452 ** Returns: 2453 ** The exit code associated with the operation. 2454 ** 2455 ** Side Effects: 2456 ** none. 2457 */ 2458 2459 mailfile(filename, ctladdr, e) 2460 char *filename; 2461 ADDRESS *ctladdr; 2462 register ENVELOPE *e; 2463 { 2464 register FILE *f; 2465 register int pid; 2466 int mode; 2467 2468 if (tTd(11, 1)) 2469 { 2470 printf("mailfile %s\n ctladdr=", filename); 2471 printaddr(ctladdr, FALSE); 2472 } 2473 2474 if (e->e_xfp != NULL) 2475 fflush(e->e_xfp); 2476 2477 /* 2478 ** Fork so we can change permissions here. 2479 ** Note that we MUST use fork, not vfork, because of 2480 ** the complications of calling subroutines, etc. 2481 */ 2482 2483 DOFORK(fork); 2484 2485 if (pid < 0) 2486 return (EX_OSERR); 2487 else if (pid == 0) 2488 { 2489 /* child -- actually write to file */ 2490 struct stat stb; 2491 MCI mcibuf; 2492 2493 (void) setsignal(SIGINT, SIG_DFL); 2494 (void) setsignal(SIGHUP, SIG_DFL); 2495 (void) setsignal(SIGTERM, SIG_DFL); 2496 (void) umask(OldUmask); 2497 2498 if (stat(filename, &stb) < 0) 2499 stb.st_mode = FileMode; 2500 mode = stb.st_mode; 2501 2502 /* limit the errors to those actually caused in the child */ 2503 errno = 0; 2504 ExitStat = EX_OK; 2505 2506 if (bitset(0111, stb.st_mode)) 2507 exit(EX_CANTCREAT); 2508 if (ctladdr != NULL) 2509 { 2510 /* ignore setuid and setgid bits */ 2511 mode &= ~(S_ISGID|S_ISUID); 2512 } 2513 2514 /* we have to open the dfile BEFORE setuid */ 2515 if (e->e_dfp == NULL && e->e_df != NULL) 2516 { 2517 e->e_dfp = fopen(e->e_df, "r"); 2518 if (e->e_dfp == NULL) 2519 { 2520 syserr("mailfile: Cannot open %s for %s from %s", 2521 e->e_df, e->e_to, e->e_from.q_paddr); 2522 } 2523 } 2524 2525 if (!bitset(S_ISGID, mode) || setgid(stb.st_gid) < 0) 2526 { 2527 if (ctladdr != NULL && ctladdr->q_uid != 0) 2528 (void) initgroups(ctladdr->q_ruser ? 2529 ctladdr->q_ruser : ctladdr->q_user, 2530 ctladdr->q_gid); 2531 else if (FileMailer != NULL && FileMailer->m_gid != 0) 2532 (void) initgroups(DefUser, FileMailer->m_gid); 2533 else 2534 (void) initgroups(DefUser, DefGid); 2535 } 2536 if (!bitset(S_ISUID, mode) || setuid(stb.st_uid) < 0) 2537 { 2538 if (ctladdr != NULL && ctladdr->q_uid != 0) 2539 (void) setuid(ctladdr->q_uid); 2540 else if (FileMailer != NULL && FileMailer->m_uid != 0) 2541 (void) setuid(FileMailer->m_uid); 2542 else 2543 (void) setuid(DefUid); 2544 } 2545 FileName = filename; 2546 LineNumber = 0; 2547 f = dfopen(filename, O_WRONLY|O_CREAT|O_APPEND, FileMode); 2548 if (f == NULL) 2549 { 2550 message("554 cannot open: %s", errstring(errno)); 2551 exit(EX_CANTCREAT); 2552 } 2553 2554 bzero(&mcibuf, sizeof mcibuf); 2555 mcibuf.mci_mailer = FileMailer; 2556 mcibuf.mci_out = f; 2557 if (bitnset(M_7BITS, FileMailer->m_flags)) 2558 mcibuf.mci_flags |= MCIF_7BIT; 2559 2560 putfromline(&mcibuf, e); 2561 (*e->e_puthdr)(&mcibuf, e->e_header, e, 0); 2562 (*e->e_putbody)(&mcibuf, e, NULL, 0); 2563 putline("\n", &mcibuf); 2564 if (ferror(f)) 2565 { 2566 message("451 I/O error: %s", errstring(errno)); 2567 setstat(EX_IOERR); 2568 } 2569 (void) xfclose(f, "mailfile", filename); 2570 (void) fflush(stdout); 2571 2572 /* reset ISUID & ISGID bits for paranoid systems */ 2573 (void) chmod(filename, (int) stb.st_mode); 2574 exit(ExitStat); 2575 /*NOTREACHED*/ 2576 } 2577 else 2578 { 2579 /* parent -- wait for exit status */ 2580 int st; 2581 2582 st = waitfor(pid); 2583 if (WIFEXITED(st)) 2584 return (WEXITSTATUS(st)); 2585 else 2586 { 2587 syserr("child died on signal %d", st); 2588 return (EX_UNAVAILABLE); 2589 } 2590 /*NOTREACHED*/ 2591 } 2592 } 2593 /* 2594 ** HOSTSIGNATURE -- return the "signature" for a host. 2595 ** 2596 ** The signature describes how we are going to send this -- it 2597 ** can be just the hostname (for non-Internet hosts) or can be 2598 ** an ordered list of MX hosts. 2599 ** 2600 ** Parameters: 2601 ** m -- the mailer describing this host. 2602 ** host -- the host name. 2603 ** e -- the current envelope. 2604 ** 2605 ** Returns: 2606 ** The signature for this host. 2607 ** 2608 ** Side Effects: 2609 ** Can tweak the symbol table. 2610 */ 2611 2612 char * 2613 hostsignature(m, host, e) 2614 register MAILER *m; 2615 char *host; 2616 ENVELOPE *e; 2617 { 2618 register char *p; 2619 register STAB *s; 2620 int i; 2621 int len; 2622 #if NAMED_BIND 2623 int nmx; 2624 auto int rcode; 2625 char *hp; 2626 char *endp; 2627 int oldoptions; 2628 char *mxhosts[MAXMXHOSTS + 1]; 2629 #endif 2630 2631 /* 2632 ** Check to see if this uses IPC -- if not, it can't have MX records. 2633 */ 2634 2635 p = m->m_mailer; 2636 if (strcmp(p, "[IPC]") != 0 && strcmp(p, "[TCP]") != 0) 2637 { 2638 /* just an ordinary mailer */ 2639 return host; 2640 } 2641 2642 /* 2643 ** Look it up in the symbol table. 2644 */ 2645 2646 s = stab(host, ST_HOSTSIG, ST_ENTER); 2647 if (s->s_hostsig != NULL) 2648 return s->s_hostsig; 2649 2650 /* 2651 ** Not already there -- create a signature. 2652 */ 2653 2654 #if NAMED_BIND 2655 if (ConfigLevel < 2) 2656 { 2657 oldoptions = _res.options; 2658 _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 2659 } 2660 2661 for (hp = host; hp != NULL; hp = endp) 2662 { 2663 endp = strchr(hp, ':'); 2664 if (endp != NULL) 2665 *endp = '\0'; 2666 2667 nmx = getmxrr(hp, mxhosts, TRUE, &rcode); 2668 2669 if (nmx <= 0) 2670 { 2671 register MCI *mci; 2672 2673 /* update the connection info for this host */ 2674 mci = mci_get(hp, m); 2675 mci->mci_exitstat = rcode; 2676 mci->mci_errno = errno; 2677 #if NAMED_BIND 2678 mci->mci_herrno = h_errno; 2679 #endif 2680 2681 /* and return the original host name as the signature */ 2682 nmx = 1; 2683 mxhosts[0] = hp; 2684 } 2685 2686 len = 0; 2687 for (i = 0; i < nmx; i++) 2688 { 2689 len += strlen(mxhosts[i]) + 1; 2690 } 2691 if (s->s_hostsig != NULL) 2692 len += strlen(s->s_hostsig) + 1; 2693 p = xalloc(len); 2694 if (s->s_hostsig != NULL) 2695 { 2696 (void) strcpy(p, s->s_hostsig); 2697 free(s->s_hostsig); 2698 s->s_hostsig = p; 2699 p += strlen(p); 2700 *p++ = ':'; 2701 } 2702 else 2703 s->s_hostsig = p; 2704 for (i = 0; i < nmx; i++) 2705 { 2706 if (i != 0) 2707 *p++ = ':'; 2708 strcpy(p, mxhosts[i]); 2709 p += strlen(p); 2710 } 2711 if (endp != NULL) 2712 *endp++ = ':'; 2713 } 2714 makelower(s->s_hostsig); 2715 if (ConfigLevel < 2) 2716 _res.options = oldoptions; 2717 #else 2718 /* not using BIND -- the signature is just the host name */ 2719 s->s_hostsig = host; 2720 #endif 2721 if (tTd(17, 1)) 2722 printf("hostsignature(%s) = %s\n", host, s->s_hostsig); 2723 return s->s_hostsig; 2724 } 2725 /* 2726 ** SETSTATUS -- set the address status for return messages 2727 ** 2728 ** Parameters: 2729 ** a -- the address to set. 2730 ** msg -- the text of the message, which must be in standard 2731 ** SMTP form (3 digits, a space, and a message). 2732 ** 2733 ** Returns: 2734 ** none. 2735 */ 2736 2737 setstatus(a, msg) 2738 register ADDRESS *a; 2739 char *msg; 2740 { 2741 char buf[MAXLINE]; 2742 2743 if (a->q_rstatus != NULL) 2744 free(a->q_rstatus); 2745 if (strlen(msg) > 4) 2746 { 2747 register char *p, *q; 2748 int parenlev = 0; 2749 2750 strncpy(buf, msg, 4); 2751 p = &buf[4]; 2752 *p++ = '('; 2753 for (q = &msg[4]; *q != '\0'; q++) 2754 { 2755 switch (*q) 2756 { 2757 case '(': 2758 parenlev++; 2759 break; 2760 2761 case ')': 2762 if (parenlev > 0) 2763 parenlev--; 2764 else 2765 *p++ = '\\'; 2766 break; 2767 } 2768 *p++ = *q; 2769 } 2770 while (parenlev-- >= 0) 2771 *p++ = ')'; 2772 *p++ = '\0'; 2773 msg = buf; 2774 } 2775 a->q_rstatus = newstr(msg); 2776 } 2777