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