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