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 8.23 (Berkeley) 01/24/94"; 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=%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 { 378 printf("%s: ", h->h_field); 379 xputs(h->h_value); 380 printf("\n"); 381 } 382 383 /* count the number of times it has been processed */ 384 if (bitset(H_TRACE, h->h_flags)) 385 hopcnt++; 386 387 /* send to this person if we so desire */ 388 if (GrabTo && bitset(H_RCPT, h->h_flags) && 389 !bitset(H_DEFAULT, h->h_flags) && 390 (!bitset(EF_RESENT, e->e_flags) || bitset(H_RESENT, h->h_flags))) 391 { 392 int saveflags = e->e_flags; 393 394 (void) sendtolist(h->h_value, NULLADDR, 395 &e->e_sendqueue, e); 396 397 /* delete fatal errors generated by this address */ 398 if (!GrabTo && !bitset(EF_FATALERRS, saveflags)) 399 e->e_flags &= ~EF_FATALERRS; 400 } 401 402 /* save the message-id for logging */ 403 if (full && strcasecmp(h->h_field, "message-id") == 0) 404 { 405 msgid = h->h_value; 406 while (isascii(*msgid) && isspace(*msgid)) 407 msgid++; 408 } 409 410 /* see if this is a return-receipt header */ 411 if (bitset(H_RECEIPTTO, h->h_flags)) 412 e->e_receiptto = h->h_value; 413 414 /* see if this is an errors-to header */ 415 if (UseErrorsTo && bitset(H_ERRORSTO, h->h_flags)) 416 (void) sendtolist(h->h_value, NULLADDR, 417 &e->e_errorqueue, e); 418 } 419 if (tTd(32, 1)) 420 printf("----------------------------\n"); 421 422 /* if we are just verifying (that is, sendmail -t -bv), drop out now */ 423 if (OpMode == MD_VERIFY) 424 return; 425 426 /* store hop count */ 427 if (hopcnt > e->e_hopcount) 428 e->e_hopcount = hopcnt; 429 430 /* message priority */ 431 p = hvalue("precedence", e); 432 if (p != NULL) 433 e->e_class = priencode(p); 434 if (full) 435 e->e_msgpriority = e->e_msgsize 436 - e->e_class * WkClassFact 437 + e->e_nrcpts * WkRecipFact; 438 439 /* date message originated */ 440 p = hvalue("posted-date", e); 441 if (p == NULL) 442 p = hvalue("date", e); 443 if (p != NULL) 444 define('a', p, e); 445 446 /* 447 ** Log collection information. 448 */ 449 450 # ifdef LOG 451 if (full && LogLevel > 4) 452 logsender(e, msgid); 453 # endif /* LOG */ 454 e->e_flags &= ~EF_LOGSENDER; 455 } 456 /* 457 ** LOGSENDER -- log sender information 458 ** 459 ** Parameters: 460 ** e -- the envelope to log 461 ** msgid -- the message id 462 ** 463 ** Returns: 464 ** none 465 */ 466 467 logsender(e, msgid) 468 register ENVELOPE *e; 469 char *msgid; 470 { 471 char *name; 472 register char *sbp; 473 register char *p; 474 char hbuf[MAXNAME]; 475 char sbuf[MAXLINE]; 476 477 if (bitset(EF_RESPONSE, e->e_flags)) 478 name = "[RESPONSE]"; 479 else if ((name = macvalue('_', e)) != NULL) 480 ; 481 else if (RealHostName[0] == '[') 482 name = RealHostName; 483 else 484 { 485 name = hbuf; 486 (void) sprintf(hbuf, "%.80s", RealHostName); 487 if (RealHostAddr.sa.sa_family != 0) 488 { 489 p = &hbuf[strlen(hbuf)]; 490 (void) sprintf(p, " (%s)", 491 anynet_ntoa(&RealHostAddr)); 492 } 493 } 494 495 /* some versions of syslog only take 5 printf args */ 496 # if (SYSLOG_BUFSIZE) >= 256 497 sbp = sbuf; 498 sprintf(sbp, "from=%.200s, size=%ld, class=%d, pri=%ld, nrcpts=%d", 499 e->e_from.q_paddr, e->e_msgsize, e->e_class, 500 e->e_msgpriority, e->e_nrcpts); 501 sbp += strlen(sbp); 502 if (msgid != NULL) 503 { 504 sprintf(sbp, ", msgid=%.100s", msgid); 505 sbp += strlen(sbp); 506 } 507 if (e->e_bodytype != NULL) 508 { 509 (void) sprintf(sbp, ", bodytype=%.20s", e->e_bodytype); 510 sbp += strlen(sbp); 511 } 512 p = macvalue('r', e); 513 if (p != NULL) 514 (void) sprintf(sbp, ", proto=%.20s", p); 515 syslog(LOG_INFO, "%s: %s, relay=%s", 516 e->e_id, sbuf, name); 517 518 # else /* short syslog buffer */ 519 520 syslog(LOG_INFO, "%s: from=%s", 521 e->e_id, shortenstring(e->e_from.q_paddr, 83)); 522 syslog(LOG_INFO, "%s: size=%ld, class=%ld, pri=%ld, nrcpts=%d", 523 e->e_id, e->e_msgsize, e->e_class, 524 e->e_msgpriority, e->e_nrcpts); 525 if (msgid != NULL) 526 syslog(LOG_INFO, "%s: msgid=%s", e->e_id, msgid); 527 sbp = sbuf; 528 sprintf(sbp, "%s:", e->e_id); 529 sbp += strlen(sbp); 530 if (e->e_bodytype != NULL) 531 { 532 sprintf(sbp, " bodytype=%s,", e->e_bodytype); 533 sbp += strlen(sbp); 534 } 535 p = macvalue('r', e); 536 if (p != NULL) 537 { 538 sprintf(sbp, " proto=%s,", p); 539 sbp += strlen(sbp); 540 } 541 syslog(LOG_INFO, "%s relay=%s", sbuf, name); 542 # endif 543 } 544 /* 545 ** PRIENCODE -- encode external priority names into internal values. 546 ** 547 ** Parameters: 548 ** p -- priority in ascii. 549 ** 550 ** Returns: 551 ** priority as a numeric level. 552 ** 553 ** Side Effects: 554 ** none. 555 */ 556 557 priencode(p) 558 char *p; 559 { 560 register int i; 561 562 for (i = 0; i < NumPriorities; i++) 563 { 564 if (!strcasecmp(p, Priorities[i].pri_name)) 565 return (Priorities[i].pri_val); 566 } 567 568 /* unknown priority */ 569 return (0); 570 } 571 /* 572 ** CRACKADDR -- parse an address and turn it into a macro 573 ** 574 ** This doesn't actually parse the address -- it just extracts 575 ** it and replaces it with "$g". The parse is totally ad hoc 576 ** and isn't even guaranteed to leave something syntactically 577 ** identical to what it started with. However, it does leave 578 ** something semantically identical. 579 ** 580 ** This algorithm has been cleaned up to handle a wider range 581 ** of cases -- notably quoted and backslash escaped strings. 582 ** This modification makes it substantially better at preserving 583 ** the original syntax. 584 ** 585 ** Parameters: 586 ** addr -- the address to be cracked. 587 ** 588 ** Returns: 589 ** a pointer to the new version. 590 ** 591 ** Side Effects: 592 ** none. 593 ** 594 ** Warning: 595 ** The return value is saved in local storage and should 596 ** be copied if it is to be reused. 597 */ 598 599 char * 600 crackaddr(addr) 601 register char *addr; 602 { 603 register char *p; 604 register char c; 605 int cmtlev; 606 int realcmtlev; 607 int anglelev, realanglelev; 608 int copylev; 609 bool qmode; 610 bool realqmode; 611 bool skipping; 612 bool putgmac = FALSE; 613 bool quoteit = FALSE; 614 bool gotangle = FALSE; 615 register char *bp; 616 char *buflim; 617 static char buf[MAXNAME]; 618 619 if (tTd(33, 1)) 620 printf("crackaddr(%s)\n", addr); 621 622 /* strip leading spaces */ 623 while (*addr != '\0' && isascii(*addr) && isspace(*addr)) 624 addr++; 625 626 /* 627 ** Start by assuming we have no angle brackets. This will be 628 ** adjusted later if we find them. 629 */ 630 631 bp = buf; 632 buflim = &buf[sizeof buf - 5]; 633 p = addr; 634 copylev = anglelev = realanglelev = cmtlev = realcmtlev = 0; 635 qmode = realqmode = FALSE; 636 637 while ((c = *p++) != '\0') 638 { 639 /* 640 ** If the buffer is overful, go into a special "skipping" 641 ** mode that tries to keep legal syntax but doesn't actually 642 ** output things. 643 */ 644 645 skipping = bp >= buflim; 646 647 if (copylev > 0 && !skipping) 648 *bp++ = c; 649 650 /* check for backslash escapes */ 651 if (c == '\\') 652 { 653 /* arrange to quote the address */ 654 if (cmtlev <= 0 && !qmode) 655 quoteit = TRUE; 656 657 if ((c = *p++) == '\0') 658 { 659 /* too far */ 660 p--; 661 goto putg; 662 } 663 if (copylev > 0 && !skipping) 664 *bp++ = c; 665 goto putg; 666 } 667 668 /* check for quoted strings */ 669 if (c == '"' && cmtlev <= 0) 670 { 671 qmode = !qmode; 672 if (copylev > 0 && !skipping) 673 realqmode = !realqmode; 674 continue; 675 } 676 if (qmode) 677 goto putg; 678 679 /* check for comments */ 680 if (c == '(') 681 { 682 cmtlev++; 683 684 /* allow space for closing paren */ 685 if (!skipping) 686 { 687 buflim--; 688 realcmtlev++; 689 if (copylev++ <= 0) 690 { 691 *bp++ = ' '; 692 *bp++ = c; 693 } 694 } 695 } 696 if (cmtlev > 0) 697 { 698 if (c == ')') 699 { 700 cmtlev--; 701 copylev--; 702 if (!skipping) 703 { 704 realcmtlev--; 705 buflim++; 706 } 707 } 708 continue; 709 } 710 else if (c == ')') 711 { 712 /* syntax error: unmatched ) */ 713 if (copylev > 0 && !skipping) 714 bp--; 715 } 716 717 /* check for characters that may have to be quoted */ 718 if (strchr(".'@,;:\\()[]", c) != NULL) 719 { 720 /* 721 ** If these occur as the phrase part of a <> 722 ** construct, but are not inside of () or already 723 ** quoted, they will have to be quoted. Note that 724 ** now (but don't actually do the quoting). 725 */ 726 727 if (cmtlev <= 0 && !qmode) 728 quoteit = TRUE; 729 } 730 731 /* check for angle brackets */ 732 if (c == '<') 733 { 734 register char *q; 735 736 /* assume first of two angles is bogus */ 737 if (gotangle) 738 quoteit = TRUE; 739 gotangle = TRUE; 740 741 /* oops -- have to change our mind */ 742 anglelev = 1; 743 if (!skipping) 744 realanglelev = 1; 745 746 bp = buf; 747 if (quoteit) 748 { 749 *bp++ = '"'; 750 751 /* back up over the '<' and any spaces */ 752 --p; 753 while (isascii(*--p) && isspace(*p)) 754 continue; 755 p++; 756 } 757 for (q = addr; q < p; ) 758 { 759 c = *q++; 760 if (bp < buflim) 761 { 762 if (quoteit && c == '"') 763 *bp++ = '\\'; 764 *bp++ = c; 765 } 766 } 767 if (quoteit) 768 { 769 if (bp == &buf[1]) 770 bp--; 771 else 772 *bp++ = '"'; 773 while ((c = *p++) != '<') 774 { 775 if (bp < buflim) 776 *bp++ = c; 777 } 778 *bp++ = c; 779 } 780 copylev = 0; 781 putgmac = quoteit = FALSE; 782 continue; 783 } 784 785 if (c == '>') 786 { 787 if (anglelev > 0) 788 { 789 anglelev--; 790 if (!skipping) 791 { 792 realanglelev--; 793 buflim++; 794 } 795 } 796 else if (!skipping) 797 { 798 /* syntax error: unmatched > */ 799 if (copylev > 0) 800 bp--; 801 quoteit = TRUE; 802 continue; 803 } 804 if (copylev++ <= 0) 805 *bp++ = c; 806 continue; 807 } 808 809 /* must be a real address character */ 810 putg: 811 if (copylev <= 0 && !putgmac) 812 { 813 *bp++ = MACROEXPAND; 814 *bp++ = 'g'; 815 putgmac = TRUE; 816 } 817 } 818 819 /* repair any syntactic damage */ 820 if (realqmode) 821 *bp++ = '"'; 822 while (realcmtlev-- > 0) 823 *bp++ = ')'; 824 while (realanglelev-- > 0) 825 *bp++ = '>'; 826 *bp++ = '\0'; 827 828 if (tTd(33, 1)) 829 printf("crackaddr=>`%s'\n", buf); 830 831 return (buf); 832 } 833 /* 834 ** PUTHEADER -- put the header part of a message from the in-core copy 835 ** 836 ** Parameters: 837 ** mci -- the connection information. 838 ** e -- envelope to use. 839 ** 840 ** Returns: 841 ** none. 842 ** 843 ** Side Effects: 844 ** none. 845 */ 846 847 /* 848 * Macro for fast max (not available in e.g. DG/UX, 386/ix). 849 */ 850 #ifndef MAX 851 # define MAX(a,b) (((a)>(b))?(a):(b)) 852 #endif 853 854 putheader(mci, e) 855 register MCI *mci; 856 register ENVELOPE *e; 857 { 858 char buf[MAX(MAXLINE,BUFSIZ)]; 859 register HDR *h; 860 char obuf[MAXLINE]; 861 862 if (tTd(34, 1)) 863 printf("--- putheader, mailer = %s ---\n", 864 mci->mci_mailer->m_name); 865 866 for (h = e->e_header; h != NULL; h = h->h_link) 867 { 868 register char *p; 869 extern bool bitintersect(); 870 871 if (tTd(34, 11)) 872 { 873 printf(" %s: ", h->h_field); 874 xputs(h->h_value); 875 } 876 877 if (bitset(H_CHECK|H_ACHECK, h->h_flags) && 878 !bitintersect(h->h_mflags, mci->mci_mailer->m_flags)) 879 { 880 if (tTd(34, 11)) 881 printf(" (skipped)\n"); 882 continue; 883 } 884 885 /* handle Resent-... headers specially */ 886 if (bitset(H_RESENT, h->h_flags) && !bitset(EF_RESENT, e->e_flags)) 887 { 888 if (tTd(34, 11)) 889 printf(" (skipped (resent))\n"); 890 continue; 891 } 892 893 /* macro expand value if generated internally */ 894 p = h->h_value; 895 if (bitset(H_DEFAULT, h->h_flags)) 896 { 897 expand(p, buf, &buf[sizeof buf], e); 898 p = buf; 899 if (p == NULL || *p == '\0') 900 { 901 if (tTd(34, 11)) 902 printf(" (skipped -- null value)\n"); 903 continue; 904 } 905 } 906 907 if (tTd(34, 11)) 908 printf("\n"); 909 910 if (bitset(H_FROM|H_RCPT, h->h_flags)) 911 { 912 /* address field */ 913 bool oldstyle = bitset(EF_OLDSTYLE, e->e_flags); 914 915 if (bitset(H_FROM, h->h_flags)) 916 oldstyle = FALSE; 917 commaize(h, p, oldstyle, mci, e); 918 } 919 else 920 { 921 /* vanilla header line */ 922 register char *nlp; 923 924 (void) sprintf(obuf, "%s: ", h->h_field); 925 while ((nlp = strchr(p, '\n')) != NULL) 926 { 927 *nlp = '\0'; 928 (void) strcat(obuf, p); 929 *nlp = '\n'; 930 putline(obuf, mci); 931 p = ++nlp; 932 obuf[0] = '\0'; 933 } 934 (void) strcat(obuf, p); 935 putline(obuf, mci); 936 } 937 } 938 } 939 /* 940 ** COMMAIZE -- output a header field, making a comma-translated list. 941 ** 942 ** Parameters: 943 ** h -- the header field to output. 944 ** p -- the value to put in it. 945 ** oldstyle -- TRUE if this is an old style header. 946 ** mci -- the connection information. 947 ** e -- the envelope containing the message. 948 ** 949 ** Returns: 950 ** none. 951 ** 952 ** Side Effects: 953 ** outputs "p" to file "fp". 954 */ 955 956 void 957 commaize(h, p, oldstyle, mci, e) 958 register HDR *h; 959 register char *p; 960 bool oldstyle; 961 register MCI *mci; 962 register ENVELOPE *e; 963 { 964 register char *obp; 965 int opos; 966 bool firstone = TRUE; 967 char obuf[MAXLINE + 3]; 968 969 /* 970 ** Output the address list translated by the 971 ** mailer and with commas. 972 */ 973 974 if (tTd(14, 2)) 975 printf("commaize(%s: %s)\n", h->h_field, p); 976 977 obp = obuf; 978 (void) sprintf(obp, "%s: ", h->h_field); 979 opos = strlen(h->h_field) + 2; 980 obp += opos; 981 982 /* 983 ** Run through the list of values. 984 */ 985 986 while (*p != '\0') 987 { 988 register char *name; 989 register int c; 990 char savechar; 991 int flags; 992 auto int stat; 993 994 /* 995 ** Find the end of the name. New style names 996 ** end with a comma, old style names end with 997 ** a space character. However, spaces do not 998 ** necessarily delimit an old-style name -- at 999 ** signs mean keep going. 1000 */ 1001 1002 /* find end of name */ 1003 while ((isascii(*p) && isspace(*p)) || *p == ',') 1004 p++; 1005 name = p; 1006 for (;;) 1007 { 1008 auto char *oldp; 1009 char pvpbuf[PSBUFSIZE]; 1010 1011 (void) prescan(p, oldstyle ? ' ' : ',', pvpbuf, 1012 sizeof pvpbuf, &oldp); 1013 p = oldp; 1014 1015 /* look to see if we have an at sign */ 1016 while (*p != '\0' && isascii(*p) && isspace(*p)) 1017 p++; 1018 1019 if (*p != '@') 1020 { 1021 p = oldp; 1022 break; 1023 } 1024 p += *p == '@' ? 1 : 2; 1025 while (*p != '\0' && isascii(*p) && isspace(*p)) 1026 p++; 1027 } 1028 /* at the end of one complete name */ 1029 1030 /* strip off trailing white space */ 1031 while (p >= name && 1032 ((isascii(*p) && isspace(*p)) || *p == ',' || *p == '\0')) 1033 p--; 1034 if (++p == name) 1035 continue; 1036 savechar = *p; 1037 *p = '\0'; 1038 1039 /* translate the name to be relative */ 1040 flags = RF_HEADERADDR|RF_ADDDOMAIN; 1041 if (bitset(H_FROM, h->h_flags)) 1042 flags |= RF_SENDERADDR; 1043 stat = EX_OK; 1044 name = remotename(name, mci->mci_mailer, flags, &stat, e); 1045 if (*name == '\0') 1046 { 1047 *p = savechar; 1048 continue; 1049 } 1050 1051 /* output the name with nice formatting */ 1052 opos += strlen(name); 1053 if (!firstone) 1054 opos += 2; 1055 if (opos > 78 && !firstone) 1056 { 1057 (void) strcpy(obp, ",\n"); 1058 putline(obuf, mci); 1059 obp = obuf; 1060 (void) sprintf(obp, " "); 1061 opos = strlen(obp); 1062 obp += opos; 1063 opos += strlen(name); 1064 } 1065 else if (!firstone) 1066 { 1067 (void) sprintf(obp, ", "); 1068 obp += 2; 1069 } 1070 1071 while ((c = *name++) != '\0' && obp < &obuf[MAXLINE]) 1072 *obp++ = c; 1073 firstone = FALSE; 1074 *p = savechar; 1075 } 1076 (void) strcpy(obp, "\n"); 1077 putline(obuf, mci); 1078 } 1079 /* 1080 ** COPYHEADER -- copy header list 1081 ** 1082 ** This routine is the equivalent of newstr for header lists 1083 ** 1084 ** Parameters: 1085 ** header -- list of header structures to copy. 1086 ** 1087 ** Returns: 1088 ** a copy of 'header'. 1089 ** 1090 ** Side Effects: 1091 ** none. 1092 */ 1093 1094 HDR * 1095 copyheader(header) 1096 register HDR *header; 1097 { 1098 register HDR *newhdr; 1099 HDR *ret; 1100 register HDR **tail = &ret; 1101 1102 while (header != NULL) 1103 { 1104 newhdr = (HDR *) xalloc(sizeof(HDR)); 1105 STRUCTCOPY(*header, *newhdr); 1106 *tail = newhdr; 1107 tail = &newhdr->h_link; 1108 header = header->h_link; 1109 } 1110 *tail = NULL; 1111 1112 return ret; 1113 } 1114