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[] = "@(#)headers.c 8.36 (Berkeley) 08/21/94"; 11 #endif /* not lint */ 12 13 # include <errno.h> 14 # include "sendmail.h" 15 16 /* 17 ** CHOMPHEADER -- process and save a header line. 18 ** 19 ** Called by collect and by readcf to deal with header lines. 20 ** 21 ** Parameters: 22 ** line -- header as a text line. 23 ** def -- if set, this is a default value. 24 ** e -- the envelope including this header. 25 ** 26 ** Returns: 27 ** flags for this header. 28 ** 29 ** Side Effects: 30 ** The header is saved on the header list. 31 ** Contents of 'line' are destroyed. 32 */ 33 34 chompheader(line, def, e) 35 char *line; 36 bool def; 37 register ENVELOPE *e; 38 { 39 register char *p; 40 register HDR *h; 41 HDR **hp; 42 char *fname; 43 char *fvalue; 44 struct hdrinfo *hi; 45 bool cond = FALSE; 46 BITMAP mopts; 47 char buf[MAXNAME]; 48 49 if (tTd(31, 6)) 50 printf("chompheader: %s\n", line); 51 52 /* strip off options */ 53 clrbitmap(mopts); 54 p = line; 55 if (*p == '?') 56 { 57 /* have some */ 58 register char *q = strchr(p + 1, *p); 59 60 if (q != NULL) 61 { 62 *q++ = '\0'; 63 while (*++p != '\0') 64 setbitn(*p, mopts); 65 p = q; 66 } 67 else 68 usrerr("553 header syntax error, line \"%s\"", line); 69 cond = TRUE; 70 } 71 72 /* find canonical name */ 73 fname = p; 74 while (isascii(*p) && isgraph(*p) && *p != ':') 75 p++; 76 fvalue = p; 77 while (isascii(*p) && isspace(*p)) 78 p++; 79 if (*p++ != ':' || fname == fvalue) 80 { 81 syserr("553 header syntax error, line \"%s\"", line); 82 return (0); 83 } 84 *fvalue = '\0'; 85 fvalue = p; 86 87 /* strip field value on front */ 88 if (*fvalue == ' ') 89 fvalue++; 90 91 /* see if it is a known type */ 92 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 93 { 94 if (strcasecmp(hi->hi_field, fname) == 0) 95 break; 96 } 97 98 if (tTd(31, 9)) 99 { 100 if (hi->hi_field == NULL) 101 printf("no header match\n"); 102 else 103 printf("header match, hi_flags=%x\n", hi->hi_flags); 104 } 105 106 /* see if this is a resent message */ 107 if (!def && bitset(H_RESENT, hi->hi_flags)) 108 e->e_flags |= EF_RESENT; 109 110 /* if this means "end of header" quit now */ 111 if (bitset(H_EOH, hi->hi_flags)) 112 return (hi->hi_flags); 113 114 /* 115 ** Drop explicit From: if same as what we would generate. 116 ** This is to make MH (which doesn't always give a full name) 117 ** insert the full name information in all circumstances. 118 */ 119 120 p = "resent-from"; 121 if (!bitset(EF_RESENT, e->e_flags)) 122 p += 7; 123 if (!def && !bitset(EF_QUEUERUN, e->e_flags) && strcasecmp(fname, p) == 0) 124 { 125 if (tTd(31, 2)) 126 { 127 printf("comparing header from (%s) against default (%s or %s)\n", 128 fvalue, e->e_from.q_paddr, e->e_from.q_user); 129 } 130 if (e->e_from.q_paddr != NULL && 131 (strcmp(fvalue, e->e_from.q_paddr) == 0 || 132 strcmp(fvalue, e->e_from.q_user) == 0)) 133 return (hi->hi_flags); 134 #ifdef MAYBENEXTRELEASE /* XXX UNTESTED XXX UNTESTED XXX UNTESTED XXX */ 135 #ifdef USERDB 136 else 137 { 138 auto ADDRESS a; 139 char *fancy; 140 bool oldSuprErrs = SuprErrs; 141 extern char *crackaddr(); 142 extern char *udbsender(); 143 144 /* 145 ** Try doing USERDB rewriting even on fully commented 146 ** names; this saves the "comment" information (such 147 ** as full name) and rewrites the electronic part. 148 ** 149 ** XXX This code doesn't belong here -- parsing should 150 ** XXX not be done during collect() phase because 151 ** XXX error messages can confuse the SMTP phase. 152 ** XXX Setting SuprErrs is a crude hack around this 153 ** XXX problem. 154 */ 155 156 if (OpMode == MD_SMTP || OpMode == MD_ARPAFTP) 157 SuprErrs = TRUE; 158 fancy = crackaddr(fvalue); 159 if (parseaddr(fvalue, &a, RF_COPYNONE, '\0', NULL, e) != NULL && 160 bitnset(M_CHECKUDB, a.q_mailer->m_flags) && 161 (p = udbsender(a.q_user)) != NULL) 162 { 163 char *oldg = macvalue('g', e); 164 165 define('g', p, e); 166 expand(fancy, buf, &buf[sizeof buf], e); 167 define('g', oldg, e); 168 fvalue = buf; 169 } 170 SuprErrs = oldSuprErrs; 171 } 172 #endif 173 #endif 174 } 175 176 /* delete default value for this header */ 177 for (hp = &e->e_header; (h = *hp) != NULL; hp = &h->h_link) 178 { 179 if (strcasecmp(fname, h->h_field) == 0 && 180 bitset(H_DEFAULT, h->h_flags) && 181 !bitset(H_FORCE, h->h_flags)) 182 h->h_value = NULL; 183 } 184 185 /* create a new node */ 186 h = (HDR *) xalloc(sizeof *h); 187 h->h_field = newstr(fname); 188 h->h_value = newstr(fvalue); 189 h->h_link = NULL; 190 bcopy((char *) mopts, (char *) h->h_mflags, sizeof mopts); 191 *hp = h; 192 h->h_flags = hi->hi_flags; 193 if (def) 194 h->h_flags |= H_DEFAULT; 195 if (cond) 196 h->h_flags |= H_CHECK; 197 198 /* hack to see if this is a new format message */ 199 if (!def && bitset(H_RCPT|H_FROM, h->h_flags) && 200 (strchr(fvalue, ',') != NULL || strchr(fvalue, '(') != NULL || 201 strchr(fvalue, '<') != NULL || strchr(fvalue, ';') != NULL)) 202 { 203 e->e_flags &= ~EF_OLDSTYLE; 204 } 205 206 return (h->h_flags); 207 } 208 /* 209 ** ADDHEADER -- add a header entry to the end of the queue. 210 ** 211 ** This bypasses the special checking of chompheader. 212 ** 213 ** Parameters: 214 ** field -- the name of the header field. 215 ** value -- the value of the field. 216 ** hp -- an indirect pointer to the header structure list. 217 ** 218 ** Returns: 219 ** none. 220 ** 221 ** Side Effects: 222 ** adds the field on the list of headers for this envelope. 223 */ 224 225 addheader(field, value, hdrlist) 226 char *field; 227 char *value; 228 HDR **hdrlist; 229 { 230 register HDR *h; 231 register struct hdrinfo *hi; 232 HDR **hp; 233 234 /* find info struct */ 235 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 236 { 237 if (strcasecmp(field, hi->hi_field) == 0) 238 break; 239 } 240 241 /* find current place in list -- keep back pointer? */ 242 for (hp = hdrlist; (h = *hp) != NULL; hp = &h->h_link) 243 { 244 if (strcasecmp(field, h->h_field) == 0) 245 break; 246 } 247 248 /* allocate space for new header */ 249 h = (HDR *) xalloc(sizeof *h); 250 h->h_field = field; 251 h->h_value = newstr(value); 252 h->h_link = *hp; 253 h->h_flags = hi->hi_flags | H_DEFAULT; 254 clrbitmap(h->h_mflags); 255 *hp = h; 256 } 257 /* 258 ** HVALUE -- return value of a header. 259 ** 260 ** Only "real" fields (i.e., ones that have not been supplied 261 ** as a default) are used. 262 ** 263 ** Parameters: 264 ** field -- the field name. 265 ** header -- the header list. 266 ** 267 ** Returns: 268 ** pointer to the value part. 269 ** NULL if not found. 270 ** 271 ** Side Effects: 272 ** none. 273 */ 274 275 char * 276 hvalue(field, header) 277 char *field; 278 HDR *header; 279 { 280 register HDR *h; 281 282 for (h = header; h != NULL; h = h->h_link) 283 { 284 if (!bitset(H_DEFAULT, h->h_flags) && 285 strcasecmp(h->h_field, field) == 0) 286 return (h->h_value); 287 } 288 return (NULL); 289 } 290 /* 291 ** ISHEADER -- predicate telling if argument is a header. 292 ** 293 ** A line is a header if it has a single word followed by 294 ** optional white space followed by a colon. 295 ** 296 ** Parameters: 297 ** s -- string to check for possible headerness. 298 ** 299 ** Returns: 300 ** TRUE if s is a header. 301 ** FALSE otherwise. 302 ** 303 ** Side Effects: 304 ** none. 305 */ 306 307 bool 308 isheader(s) 309 register char *s; 310 { 311 while (*s > ' ' && *s != ':' && *s != '\0') 312 s++; 313 314 /* following technically violates RFC822 */ 315 while (isascii(*s) && isspace(*s)) 316 s++; 317 318 return (*s == ':'); 319 } 320 /* 321 ** EATHEADER -- run through the stored header and extract info. 322 ** 323 ** Parameters: 324 ** e -- the envelope to process. 325 ** full -- if set, do full processing (e.g., compute 326 ** message priority). 327 ** 328 ** Returns: 329 ** none. 330 ** 331 ** Side Effects: 332 ** Sets a bunch of global variables from information 333 ** in the collected header. 334 ** Aborts the message if the hop count is exceeded. 335 */ 336 337 eatheader(e, full) 338 register ENVELOPE *e; 339 bool full; 340 { 341 register HDR *h; 342 register char *p; 343 int hopcnt = 0; 344 char *msgid; 345 char buf[MAXLINE]; 346 347 /* 348 ** Set up macros for possible expansion in headers. 349 */ 350 351 define('f', e->e_sender, e); 352 define('g', e->e_sender, e); 353 if (e->e_origrcpt != NULL && *e->e_origrcpt != '\0') 354 define('u', e->e_origrcpt, e); 355 else 356 define('u', NULL, e); 357 358 /* full name of from person */ 359 p = hvalue("full-name", e->e_header); 360 if (p != NULL) 361 define('x', p, e); 362 363 if (tTd(32, 1)) 364 printf("----- collected header -----\n"); 365 msgid = "<none>"; 366 for (h = e->e_header; h != NULL; h = h->h_link) 367 { 368 if (h->h_value == NULL) 369 { 370 if (tTd(32, 1)) 371 printf("%s: <NULL>\n", h->h_field); 372 continue; 373 } 374 375 /* do early binding */ 376 if (bitset(H_DEFAULT, h->h_flags)) 377 { 378 expand(h->h_value, buf, &buf[sizeof buf], e); 379 if (buf[0] != '\0') 380 { 381 h->h_value = newstr(buf); 382 h->h_flags &= ~H_DEFAULT; 383 } 384 } 385 386 if (tTd(32, 1)) 387 { 388 printf("%s: ", h->h_field); 389 xputs(h->h_value); 390 printf("\n"); 391 } 392 393 /* count the number of times it has been processed */ 394 if (bitset(H_TRACE, h->h_flags)) 395 hopcnt++; 396 397 /* send to this person if we so desire */ 398 if (GrabTo && bitset(H_RCPT, h->h_flags) && 399 !bitset(H_DEFAULT, h->h_flags) && 400 (!bitset(EF_RESENT, e->e_flags) || bitset(H_RESENT, h->h_flags))) 401 { 402 int saveflags = e->e_flags; 403 404 (void) sendtolist(h->h_value, NULLADDR, 405 &e->e_sendqueue, e); 406 407 /* delete fatal errors generated by this address */ 408 if (!GrabTo && !bitset(EF_FATALERRS, saveflags)) 409 e->e_flags &= ~EF_FATALERRS; 410 } 411 412 /* save the message-id for logging */ 413 if (full && strcasecmp(h->h_field, "message-id") == 0) 414 { 415 msgid = h->h_value; 416 while (isascii(*msgid) && isspace(*msgid)) 417 msgid++; 418 } 419 420 /* see if this is a return-receipt header */ 421 if (bitset(H_RECEIPTTO, h->h_flags)) 422 e->e_receiptto = h->h_value; 423 424 /* see if this is an errors-to header */ 425 if (UseErrorsTo && bitset(H_ERRORSTO, h->h_flags)) 426 (void) sendtolist(h->h_value, NULLADDR, 427 &e->e_errorqueue, e); 428 } 429 if (tTd(32, 1)) 430 printf("----------------------------\n"); 431 432 /* if we are just verifying (that is, sendmail -t -bv), drop out now */ 433 if (OpMode == MD_VERIFY) 434 return; 435 436 /* store hop count */ 437 if (hopcnt > e->e_hopcount) 438 e->e_hopcount = hopcnt; 439 440 /* message priority */ 441 p = hvalue("precedence", e->e_header); 442 if (p != NULL) 443 e->e_class = priencode(p); 444 if (full) 445 { 446 e->e_msgpriority = e->e_msgsize 447 - e->e_class * WkClassFact 448 + e->e_nrcpts * WkRecipFact; 449 if (e->e_class < 0) 450 e->e_timeoutclass = TOC_NONURGENT; 451 else if (e->e_class > 0) 452 e->e_timeoutclass = TOC_URGENT; 453 } 454 455 /* message timeout priority */ 456 p = hvalue("priority", e->e_header); 457 if (full && p != NULL) 458 { 459 /* (this should be in the configuration file) */ 460 if (strcasecmp(p, "urgent")) 461 e->e_timeoutclass = TOC_URGENT; 462 else if (strcasecmp(p, "normal")) 463 e->e_timeoutclass = TOC_NORMAL; 464 else if (strcasecmp(p, "non-urgent")) 465 e->e_timeoutclass = TOC_NONURGENT; 466 } 467 468 /* date message originated */ 469 p = hvalue("posted-date", e->e_header); 470 if (p == NULL) 471 p = hvalue("date", e->e_header); 472 if (p != NULL) 473 define('a', p, e); 474 475 /* 476 ** From person in antiquated ARPANET mode 477 ** required by UK Grey Book e-mail gateways (sigh) 478 */ 479 480 if (OpMode == MD_ARPAFTP) 481 { 482 register struct hdrinfo *hi; 483 484 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 485 { 486 if (bitset(H_FROM, hi->hi_flags) && 487 (!bitset(H_RESENT, hi->hi_flags) || 488 bitset(EF_RESENT, e->e_flags)) && 489 (p = hvalue(hi->hi_field, e->e_header)) != NULL) 490 break; 491 } 492 if (hi->hi_field != NULL) 493 { 494 if (tTd(32, 2)) 495 printf("eatheader: setsender(*%s == %s)\n", 496 hi->hi_field, p); 497 setsender(p, e, NULL, TRUE); 498 } 499 } 500 501 /* 502 ** Log collection information. 503 */ 504 505 # ifdef LOG 506 if (full && LogLevel > 4) 507 logsender(e, msgid); 508 # endif /* LOG */ 509 e->e_flags &= ~EF_LOGSENDER; 510 } 511 /* 512 ** LOGSENDER -- log sender information 513 ** 514 ** Parameters: 515 ** e -- the envelope to log 516 ** msgid -- the message id 517 ** 518 ** Returns: 519 ** none 520 */ 521 522 logsender(e, msgid) 523 register ENVELOPE *e; 524 char *msgid; 525 { 526 # ifdef LOG 527 char *name; 528 register char *sbp; 529 register char *p; 530 char hbuf[MAXNAME]; 531 char sbuf[MAXLINE]; 532 533 if (bitset(EF_RESPONSE, e->e_flags)) 534 name = "[RESPONSE]"; 535 else if ((name = macvalue('_', e)) != NULL) 536 ; 537 else if (RealHostName == NULL) 538 name = "localhost"; 539 else if (RealHostName[0] == '[') 540 name = RealHostName; 541 else 542 { 543 name = hbuf; 544 (void) sprintf(hbuf, "%.80s", RealHostName); 545 if (RealHostAddr.sa.sa_family != 0) 546 { 547 p = &hbuf[strlen(hbuf)]; 548 (void) sprintf(p, " (%s)", 549 anynet_ntoa(&RealHostAddr)); 550 } 551 } 552 553 /* some versions of syslog only take 5 printf args */ 554 # if (SYSLOG_BUFSIZE) >= 256 555 sbp = sbuf; 556 sprintf(sbp, "from=%.200s, size=%ld, class=%d, pri=%ld, nrcpts=%d", 557 e->e_from.q_paddr, e->e_msgsize, e->e_class, 558 e->e_msgpriority, e->e_nrcpts); 559 sbp += strlen(sbp); 560 if (msgid != NULL) 561 { 562 sprintf(sbp, ", msgid=%.100s", msgid); 563 sbp += strlen(sbp); 564 } 565 if (e->e_bodytype != NULL) 566 { 567 (void) sprintf(sbp, ", bodytype=%.20s", e->e_bodytype); 568 sbp += strlen(sbp); 569 } 570 p = macvalue('r', e); 571 if (p != NULL) 572 (void) sprintf(sbp, ", proto=%.20s", p); 573 syslog(LOG_INFO, "%s: %s, relay=%s", 574 e->e_id, sbuf, name); 575 576 # else /* short syslog buffer */ 577 578 syslog(LOG_INFO, "%s: from=%s", 579 e->e_id, shortenstring(e->e_from.q_paddr, 83)); 580 syslog(LOG_INFO, "%s: size=%ld, class=%ld, pri=%ld, nrcpts=%d", 581 e->e_id, e->e_msgsize, e->e_class, 582 e->e_msgpriority, e->e_nrcpts); 583 if (msgid != NULL) 584 syslog(LOG_INFO, "%s: msgid=%s", e->e_id, msgid); 585 sbp = sbuf; 586 sprintf(sbp, "%s:", e->e_id); 587 sbp += strlen(sbp); 588 if (e->e_bodytype != NULL) 589 { 590 sprintf(sbp, " bodytype=%s,", e->e_bodytype); 591 sbp += strlen(sbp); 592 } 593 p = macvalue('r', e); 594 if (p != NULL) 595 { 596 sprintf(sbp, " proto=%s,", p); 597 sbp += strlen(sbp); 598 } 599 syslog(LOG_INFO, "%s relay=%s", sbuf, name); 600 # endif 601 # endif 602 } 603 /* 604 ** PRIENCODE -- encode external priority names into internal values. 605 ** 606 ** Parameters: 607 ** p -- priority in ascii. 608 ** 609 ** Returns: 610 ** priority as a numeric level. 611 ** 612 ** Side Effects: 613 ** none. 614 */ 615 616 priencode(p) 617 char *p; 618 { 619 register int i; 620 621 for (i = 0; i < NumPriorities; i++) 622 { 623 if (!strcasecmp(p, Priorities[i].pri_name)) 624 return (Priorities[i].pri_val); 625 } 626 627 /* unknown priority */ 628 return (0); 629 } 630 /* 631 ** CRACKADDR -- parse an address and turn it into a macro 632 ** 633 ** This doesn't actually parse the address -- it just extracts 634 ** it and replaces it with "$g". The parse is totally ad hoc 635 ** and isn't even guaranteed to leave something syntactically 636 ** identical to what it started with. However, it does leave 637 ** something semantically identical. 638 ** 639 ** This algorithm has been cleaned up to handle a wider range 640 ** of cases -- notably quoted and backslash escaped strings. 641 ** This modification makes it substantially better at preserving 642 ** the original syntax. 643 ** 644 ** Parameters: 645 ** addr -- the address to be cracked. 646 ** 647 ** Returns: 648 ** a pointer to the new version. 649 ** 650 ** Side Effects: 651 ** none. 652 ** 653 ** Warning: 654 ** The return value is saved in local storage and should 655 ** be copied if it is to be reused. 656 */ 657 658 char * 659 crackaddr(addr) 660 register char *addr; 661 { 662 register char *p; 663 register char c; 664 int cmtlev; 665 int realcmtlev; 666 int anglelev, realanglelev; 667 int copylev; 668 bool qmode; 669 bool realqmode; 670 bool skipping; 671 bool putgmac = FALSE; 672 bool quoteit = FALSE; 673 bool gotangle = FALSE; 674 register char *bp; 675 char *buflim; 676 static char buf[MAXNAME]; 677 678 if (tTd(33, 1)) 679 printf("crackaddr(%s)\n", addr); 680 681 /* strip leading spaces */ 682 while (*addr != '\0' && isascii(*addr) && isspace(*addr)) 683 addr++; 684 685 /* 686 ** Start by assuming we have no angle brackets. This will be 687 ** adjusted later if we find them. 688 */ 689 690 bp = buf; 691 buflim = &buf[sizeof buf - 5]; 692 p = addr; 693 copylev = anglelev = realanglelev = cmtlev = realcmtlev = 0; 694 qmode = realqmode = FALSE; 695 696 while ((c = *p++) != '\0') 697 { 698 /* 699 ** If the buffer is overful, go into a special "skipping" 700 ** mode that tries to keep legal syntax but doesn't actually 701 ** output things. 702 */ 703 704 skipping = bp >= buflim; 705 706 if (copylev > 0 && !skipping) 707 *bp++ = c; 708 709 /* check for backslash escapes */ 710 if (c == '\\') 711 { 712 /* arrange to quote the address */ 713 if (cmtlev <= 0 && !qmode) 714 quoteit = TRUE; 715 716 if ((c = *p++) == '\0') 717 { 718 /* too far */ 719 p--; 720 goto putg; 721 } 722 if (copylev > 0 && !skipping) 723 *bp++ = c; 724 goto putg; 725 } 726 727 /* check for quoted strings */ 728 if (c == '"' && cmtlev <= 0) 729 { 730 qmode = !qmode; 731 if (copylev > 0 && !skipping) 732 realqmode = !realqmode; 733 continue; 734 } 735 if (qmode) 736 goto putg; 737 738 /* check for comments */ 739 if (c == '(') 740 { 741 cmtlev++; 742 743 /* allow space for closing paren */ 744 if (!skipping) 745 { 746 buflim--; 747 realcmtlev++; 748 if (copylev++ <= 0) 749 { 750 *bp++ = ' '; 751 *bp++ = c; 752 } 753 } 754 } 755 if (cmtlev > 0) 756 { 757 if (c == ')') 758 { 759 cmtlev--; 760 copylev--; 761 if (!skipping) 762 { 763 realcmtlev--; 764 buflim++; 765 } 766 } 767 continue; 768 } 769 else if (c == ')') 770 { 771 /* syntax error: unmatched ) */ 772 if (copylev > 0 && !skipping) 773 bp--; 774 } 775 776 /* check for characters that may have to be quoted */ 777 if (strchr(".'@,;:\\()[]", c) != NULL) 778 { 779 /* 780 ** If these occur as the phrase part of a <> 781 ** construct, but are not inside of () or already 782 ** quoted, they will have to be quoted. Note that 783 ** now (but don't actually do the quoting). 784 */ 785 786 if (cmtlev <= 0 && !qmode) 787 quoteit = TRUE; 788 } 789 790 /* check for angle brackets */ 791 if (c == '<') 792 { 793 register char *q; 794 795 /* assume first of two angles is bogus */ 796 if (gotangle) 797 quoteit = TRUE; 798 gotangle = TRUE; 799 800 /* oops -- have to change our mind */ 801 anglelev = 1; 802 if (!skipping) 803 realanglelev = 1; 804 805 bp = buf; 806 if (quoteit) 807 { 808 *bp++ = '"'; 809 810 /* back up over the '<' and any spaces */ 811 --p; 812 while (isascii(*--p) && isspace(*p)) 813 continue; 814 p++; 815 } 816 for (q = addr; q < p; ) 817 { 818 c = *q++; 819 if (bp < buflim) 820 { 821 if (quoteit && c == '"') 822 *bp++ = '\\'; 823 *bp++ = c; 824 } 825 } 826 if (quoteit) 827 { 828 if (bp == &buf[1]) 829 bp--; 830 else 831 *bp++ = '"'; 832 while ((c = *p++) != '<') 833 { 834 if (bp < buflim) 835 *bp++ = c; 836 } 837 *bp++ = c; 838 } 839 copylev = 0; 840 putgmac = quoteit = FALSE; 841 continue; 842 } 843 844 if (c == '>') 845 { 846 if (anglelev > 0) 847 { 848 anglelev--; 849 if (!skipping) 850 { 851 realanglelev--; 852 buflim++; 853 } 854 } 855 else if (!skipping) 856 { 857 /* syntax error: unmatched > */ 858 if (copylev > 0) 859 bp--; 860 quoteit = TRUE; 861 continue; 862 } 863 if (copylev++ <= 0) 864 *bp++ = c; 865 continue; 866 } 867 868 /* must be a real address character */ 869 putg: 870 if (copylev <= 0 && !putgmac) 871 { 872 *bp++ = MACROEXPAND; 873 *bp++ = 'g'; 874 putgmac = TRUE; 875 } 876 } 877 878 /* repair any syntactic damage */ 879 if (realqmode) 880 *bp++ = '"'; 881 while (realcmtlev-- > 0) 882 *bp++ = ')'; 883 while (realanglelev-- > 0) 884 *bp++ = '>'; 885 *bp++ = '\0'; 886 887 if (tTd(33, 1)) 888 printf("crackaddr=>`%s'\n", buf); 889 890 return (buf); 891 } 892 /* 893 ** PUTHEADER -- put the header part of a message from the in-core copy 894 ** 895 ** Parameters: 896 ** mci -- the connection information. 897 ** h -- the header to put. 898 ** e -- envelope to use. 899 ** 900 ** Returns: 901 ** none. 902 ** 903 ** Side Effects: 904 ** none. 905 */ 906 907 /* 908 * Macro for fast max (not available in e.g. DG/UX, 386/ix). 909 */ 910 #ifndef MAX 911 # define MAX(a,b) (((a)>(b))?(a):(b)) 912 #endif 913 914 putheader(mci, h, e) 915 register MCI *mci; 916 register HDR *h; 917 register ENVELOPE *e; 918 { 919 char buf[MAX(MAXLINE,BUFSIZ)]; 920 char obuf[MAXLINE]; 921 922 if (tTd(34, 1)) 923 printf("--- putheader, mailer = %s ---\n", 924 mci->mci_mailer->m_name); 925 926 mci->mci_flags |= MCIF_INHEADER; 927 for (; h != NULL; h = h->h_link) 928 { 929 register char *p; 930 extern bool bitintersect(); 931 932 if (tTd(34, 11)) 933 { 934 printf(" %s: ", h->h_field); 935 xputs(h->h_value); 936 } 937 938 if (bitset(H_CHECK|H_ACHECK, h->h_flags) && 939 !bitintersect(h->h_mflags, mci->mci_mailer->m_flags)) 940 { 941 if (tTd(34, 11)) 942 printf(" (skipped)\n"); 943 continue; 944 } 945 946 /* handle Resent-... headers specially */ 947 if (bitset(H_RESENT, h->h_flags) && !bitset(EF_RESENT, e->e_flags)) 948 { 949 if (tTd(34, 11)) 950 printf(" (skipped (resent))\n"); 951 continue; 952 } 953 954 /* suppress return receipts if requested */ 955 if (bitset(H_RECEIPTTO, h->h_flags) && 956 bitset(EF_NORECEIPT, e->e_flags)) 957 { 958 if (tTd(34, 11)) 959 printf(" (skipped (receipt))\n"); 960 continue; 961 } 962 963 /* suppress Content-Transfer-Encoding: if we are MIMEing */ 964 if (bitset(H_CTE, h->h_flags) && 965 bitset(MCIF_CVT8TO7, mci->mci_flags)) 966 { 967 if (tTd(34, 11)) 968 printf(" (skipped (content-transfer-encoding))\n"); 969 continue; 970 } 971 972 /* macro expand value if generated internally */ 973 p = h->h_value; 974 if (bitset(H_DEFAULT, h->h_flags)) 975 { 976 expand(p, buf, &buf[sizeof buf], e); 977 p = buf; 978 if (p == NULL || *p == '\0') 979 { 980 if (tTd(34, 11)) 981 printf(" (skipped -- null value)\n"); 982 continue; 983 } 984 } 985 986 if (tTd(34, 11)) 987 printf("\n"); 988 989 if (bitset(H_FROM|H_RCPT, h->h_flags)) 990 { 991 /* address field */ 992 bool oldstyle = bitset(EF_OLDSTYLE, e->e_flags); 993 994 if (bitset(H_FROM, h->h_flags)) 995 oldstyle = FALSE; 996 commaize(h, p, oldstyle, mci, e); 997 } 998 else 999 { 1000 /* vanilla header line */ 1001 register char *nlp; 1002 1003 (void) sprintf(obuf, "%s: ", h->h_field); 1004 while ((nlp = strchr(p, '\n')) != NULL) 1005 { 1006 *nlp = '\0'; 1007 (void) strcat(obuf, p); 1008 *nlp = '\n'; 1009 putline(obuf, mci); 1010 p = ++nlp; 1011 obuf[0] = '\0'; 1012 } 1013 (void) strcat(obuf, p); 1014 putline(obuf, mci); 1015 } 1016 } 1017 } 1018 /* 1019 ** COMMAIZE -- output a header field, making a comma-translated list. 1020 ** 1021 ** Parameters: 1022 ** h -- the header field to output. 1023 ** p -- the value to put in it. 1024 ** oldstyle -- TRUE if this is an old style header. 1025 ** mci -- the connection information. 1026 ** e -- the envelope containing the message. 1027 ** 1028 ** Returns: 1029 ** none. 1030 ** 1031 ** Side Effects: 1032 ** outputs "p" to file "fp". 1033 */ 1034 1035 void 1036 commaize(h, p, oldstyle, mci, e) 1037 register HDR *h; 1038 register char *p; 1039 bool oldstyle; 1040 register MCI *mci; 1041 register ENVELOPE *e; 1042 { 1043 register char *obp; 1044 int opos; 1045 int omax; 1046 bool firstone = TRUE; 1047 char obuf[MAXLINE + 3]; 1048 1049 /* 1050 ** Output the address list translated by the 1051 ** mailer and with commas. 1052 */ 1053 1054 if (tTd(14, 2)) 1055 printf("commaize(%s: %s)\n", h->h_field, p); 1056 1057 obp = obuf; 1058 (void) sprintf(obp, "%s: ", h->h_field); 1059 opos = strlen(h->h_field) + 2; 1060 obp += opos; 1061 omax = mci->mci_mailer->m_linelimit - 2; 1062 if (omax < 0 || omax > 78) 1063 omax = 78; 1064 1065 /* 1066 ** Run through the list of values. 1067 */ 1068 1069 while (*p != '\0') 1070 { 1071 register char *name; 1072 register int c; 1073 char savechar; 1074 int flags; 1075 auto int stat; 1076 1077 /* 1078 ** Find the end of the name. New style names 1079 ** end with a comma, old style names end with 1080 ** a space character. However, spaces do not 1081 ** necessarily delimit an old-style name -- at 1082 ** signs mean keep going. 1083 */ 1084 1085 /* find end of name */ 1086 while ((isascii(*p) && isspace(*p)) || *p == ',') 1087 p++; 1088 name = p; 1089 for (;;) 1090 { 1091 auto char *oldp; 1092 char pvpbuf[PSBUFSIZE]; 1093 1094 (void) prescan(p, oldstyle ? ' ' : ',', pvpbuf, 1095 sizeof pvpbuf, &oldp); 1096 p = oldp; 1097 1098 /* look to see if we have an at sign */ 1099 while (*p != '\0' && isascii(*p) && isspace(*p)) 1100 p++; 1101 1102 if (*p != '@') 1103 { 1104 p = oldp; 1105 break; 1106 } 1107 p += *p == '@' ? 1 : 2; 1108 while (*p != '\0' && isascii(*p) && isspace(*p)) 1109 p++; 1110 } 1111 /* at the end of one complete name */ 1112 1113 /* strip off trailing white space */ 1114 while (p >= name && 1115 ((isascii(*p) && isspace(*p)) || *p == ',' || *p == '\0')) 1116 p--; 1117 if (++p == name) 1118 continue; 1119 savechar = *p; 1120 *p = '\0'; 1121 1122 /* translate the name to be relative */ 1123 flags = RF_HEADERADDR|RF_ADDDOMAIN; 1124 if (bitset(H_FROM, h->h_flags)) 1125 flags |= RF_SENDERADDR; 1126 stat = EX_OK; 1127 name = remotename(name, mci->mci_mailer, flags, &stat, e); 1128 if (*name == '\0') 1129 { 1130 *p = savechar; 1131 continue; 1132 } 1133 1134 /* output the name with nice formatting */ 1135 opos += strlen(name); 1136 if (!firstone) 1137 opos += 2; 1138 if (opos > omax && !firstone) 1139 { 1140 (void) strcpy(obp, ",\n"); 1141 putline(obuf, mci); 1142 obp = obuf; 1143 (void) strcpy(obp, " "); 1144 opos = strlen(obp); 1145 obp += opos; 1146 opos += strlen(name); 1147 } 1148 else if (!firstone) 1149 { 1150 (void) strcpy(obp, ", "); 1151 obp += 2; 1152 } 1153 1154 while ((c = *name++) != '\0' && obp < &obuf[MAXLINE]) 1155 *obp++ = c; 1156 firstone = FALSE; 1157 *p = savechar; 1158 } 1159 (void) strcpy(obp, "\n"); 1160 putline(obuf, mci); 1161 } 1162 /* 1163 ** COPYHEADER -- copy header list 1164 ** 1165 ** This routine is the equivalent of newstr for header lists 1166 ** 1167 ** Parameters: 1168 ** header -- list of header structures to copy. 1169 ** 1170 ** Returns: 1171 ** a copy of 'header'. 1172 ** 1173 ** Side Effects: 1174 ** none. 1175 */ 1176 1177 HDR * 1178 copyheader(header) 1179 register HDR *header; 1180 { 1181 register HDR *newhdr; 1182 HDR *ret; 1183 register HDR **tail = &ret; 1184 1185 while (header != NULL) 1186 { 1187 newhdr = (HDR *) xalloc(sizeof(HDR)); 1188 STRUCTCOPY(*header, *newhdr); 1189 *tail = newhdr; 1190 tail = &newhdr->h_link; 1191 header = header->h_link; 1192 } 1193 *tail = NULL; 1194 1195 return ret; 1196 } 1197