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 8.24 (Berkeley) 02/03/94"; 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 ** From person in antiquated ARPANET mode 448 ** required by UK Grey Book e-mail gateways (sigh) 449 */ 450 451 if (OpMode == MD_ARPAFTP) 452 { 453 register struct hdrinfo *hi; 454 455 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 456 { 457 if (bitset(H_FROM, hi->hi_flags) && 458 (!bitset(H_RESENT, hi->hi_flags) || 459 bitset(EF_RESENT, e->e_flags)) && 460 (p = hvalue(hi->hi_field, e)) != NULL) 461 break; 462 } 463 if (hi->hi_field != NULL) 464 { 465 if (tTd(32, 2)) 466 printf("eatheader: setsender(*%s == %s)\n", 467 hi->hi_field, p); 468 setsender(p, e, NULL, TRUE); 469 } 470 } 471 472 /* 473 ** Log collection information. 474 */ 475 476 # ifdef LOG 477 if (full && LogLevel > 4) 478 logsender(e, msgid); 479 # endif /* LOG */ 480 e->e_flags &= ~EF_LOGSENDER; 481 } 482 /* 483 ** LOGSENDER -- log sender information 484 ** 485 ** Parameters: 486 ** e -- the envelope to log 487 ** msgid -- the message id 488 ** 489 ** Returns: 490 ** none 491 */ 492 493 logsender(e, msgid) 494 register ENVELOPE *e; 495 char *msgid; 496 { 497 char *name; 498 register char *sbp; 499 register char *p; 500 char hbuf[MAXNAME]; 501 char sbuf[MAXLINE]; 502 503 if (bitset(EF_RESPONSE, e->e_flags)) 504 name = "[RESPONSE]"; 505 else if ((name = macvalue('_', e)) != NULL) 506 ; 507 else if (RealHostName[0] == '[') 508 name = RealHostName; 509 else 510 { 511 name = hbuf; 512 (void) sprintf(hbuf, "%.80s", RealHostName); 513 if (RealHostAddr.sa.sa_family != 0) 514 { 515 p = &hbuf[strlen(hbuf)]; 516 (void) sprintf(p, " (%s)", 517 anynet_ntoa(&RealHostAddr)); 518 } 519 } 520 521 /* some versions of syslog only take 5 printf args */ 522 # if (SYSLOG_BUFSIZE) >= 256 523 sbp = sbuf; 524 sprintf(sbp, "from=%.200s, size=%ld, class=%d, pri=%ld, nrcpts=%d", 525 e->e_from.q_paddr, e->e_msgsize, e->e_class, 526 e->e_msgpriority, e->e_nrcpts); 527 sbp += strlen(sbp); 528 if (msgid != NULL) 529 { 530 sprintf(sbp, ", msgid=%.100s", msgid); 531 sbp += strlen(sbp); 532 } 533 if (e->e_bodytype != NULL) 534 { 535 (void) sprintf(sbp, ", bodytype=%.20s", e->e_bodytype); 536 sbp += strlen(sbp); 537 } 538 p = macvalue('r', e); 539 if (p != NULL) 540 (void) sprintf(sbp, ", proto=%.20s", p); 541 syslog(LOG_INFO, "%s: %s, relay=%s", 542 e->e_id, sbuf, name); 543 544 # else /* short syslog buffer */ 545 546 syslog(LOG_INFO, "%s: from=%s", 547 e->e_id, shortenstring(e->e_from.q_paddr, 83)); 548 syslog(LOG_INFO, "%s: size=%ld, class=%ld, pri=%ld, nrcpts=%d", 549 e->e_id, e->e_msgsize, e->e_class, 550 e->e_msgpriority, e->e_nrcpts); 551 if (msgid != NULL) 552 syslog(LOG_INFO, "%s: msgid=%s", e->e_id, msgid); 553 sbp = sbuf; 554 sprintf(sbp, "%s:", e->e_id); 555 sbp += strlen(sbp); 556 if (e->e_bodytype != NULL) 557 { 558 sprintf(sbp, " bodytype=%s,", e->e_bodytype); 559 sbp += strlen(sbp); 560 } 561 p = macvalue('r', e); 562 if (p != NULL) 563 { 564 sprintf(sbp, " proto=%s,", p); 565 sbp += strlen(sbp); 566 } 567 syslog(LOG_INFO, "%s relay=%s", sbuf, name); 568 # endif 569 } 570 /* 571 ** PRIENCODE -- encode external priority names into internal values. 572 ** 573 ** Parameters: 574 ** p -- priority in ascii. 575 ** 576 ** Returns: 577 ** priority as a numeric level. 578 ** 579 ** Side Effects: 580 ** none. 581 */ 582 583 priencode(p) 584 char *p; 585 { 586 register int i; 587 588 for (i = 0; i < NumPriorities; i++) 589 { 590 if (!strcasecmp(p, Priorities[i].pri_name)) 591 return (Priorities[i].pri_val); 592 } 593 594 /* unknown priority */ 595 return (0); 596 } 597 /* 598 ** CRACKADDR -- parse an address and turn it into a macro 599 ** 600 ** This doesn't actually parse the address -- it just extracts 601 ** it and replaces it with "$g". The parse is totally ad hoc 602 ** and isn't even guaranteed to leave something syntactically 603 ** identical to what it started with. However, it does leave 604 ** something semantically identical. 605 ** 606 ** This algorithm has been cleaned up to handle a wider range 607 ** of cases -- notably quoted and backslash escaped strings. 608 ** This modification makes it substantially better at preserving 609 ** the original syntax. 610 ** 611 ** Parameters: 612 ** addr -- the address to be cracked. 613 ** 614 ** Returns: 615 ** a pointer to the new version. 616 ** 617 ** Side Effects: 618 ** none. 619 ** 620 ** Warning: 621 ** The return value is saved in local storage and should 622 ** be copied if it is to be reused. 623 */ 624 625 char * 626 crackaddr(addr) 627 register char *addr; 628 { 629 register char *p; 630 register char c; 631 int cmtlev; 632 int realcmtlev; 633 int anglelev, realanglelev; 634 int copylev; 635 bool qmode; 636 bool realqmode; 637 bool skipping; 638 bool putgmac = FALSE; 639 bool quoteit = FALSE; 640 bool gotangle = FALSE; 641 register char *bp; 642 char *buflim; 643 static char buf[MAXNAME]; 644 645 if (tTd(33, 1)) 646 printf("crackaddr(%s)\n", addr); 647 648 /* strip leading spaces */ 649 while (*addr != '\0' && isascii(*addr) && isspace(*addr)) 650 addr++; 651 652 /* 653 ** Start by assuming we have no angle brackets. This will be 654 ** adjusted later if we find them. 655 */ 656 657 bp = buf; 658 buflim = &buf[sizeof buf - 5]; 659 p = addr; 660 copylev = anglelev = realanglelev = cmtlev = realcmtlev = 0; 661 qmode = realqmode = FALSE; 662 663 while ((c = *p++) != '\0') 664 { 665 /* 666 ** If the buffer is overful, go into a special "skipping" 667 ** mode that tries to keep legal syntax but doesn't actually 668 ** output things. 669 */ 670 671 skipping = bp >= buflim; 672 673 if (copylev > 0 && !skipping) 674 *bp++ = c; 675 676 /* check for backslash escapes */ 677 if (c == '\\') 678 { 679 /* arrange to quote the address */ 680 if (cmtlev <= 0 && !qmode) 681 quoteit = TRUE; 682 683 if ((c = *p++) == '\0') 684 { 685 /* too far */ 686 p--; 687 goto putg; 688 } 689 if (copylev > 0 && !skipping) 690 *bp++ = c; 691 goto putg; 692 } 693 694 /* check for quoted strings */ 695 if (c == '"' && cmtlev <= 0) 696 { 697 qmode = !qmode; 698 if (copylev > 0 && !skipping) 699 realqmode = !realqmode; 700 continue; 701 } 702 if (qmode) 703 goto putg; 704 705 /* check for comments */ 706 if (c == '(') 707 { 708 cmtlev++; 709 710 /* allow space for closing paren */ 711 if (!skipping) 712 { 713 buflim--; 714 realcmtlev++; 715 if (copylev++ <= 0) 716 { 717 *bp++ = ' '; 718 *bp++ = c; 719 } 720 } 721 } 722 if (cmtlev > 0) 723 { 724 if (c == ')') 725 { 726 cmtlev--; 727 copylev--; 728 if (!skipping) 729 { 730 realcmtlev--; 731 buflim++; 732 } 733 } 734 continue; 735 } 736 else if (c == ')') 737 { 738 /* syntax error: unmatched ) */ 739 if (copylev > 0 && !skipping) 740 bp--; 741 } 742 743 /* check for characters that may have to be quoted */ 744 if (strchr(".'@,;:\\()[]", c) != NULL) 745 { 746 /* 747 ** If these occur as the phrase part of a <> 748 ** construct, but are not inside of () or already 749 ** quoted, they will have to be quoted. Note that 750 ** now (but don't actually do the quoting). 751 */ 752 753 if (cmtlev <= 0 && !qmode) 754 quoteit = TRUE; 755 } 756 757 /* check for angle brackets */ 758 if (c == '<') 759 { 760 register char *q; 761 762 /* assume first of two angles is bogus */ 763 if (gotangle) 764 quoteit = TRUE; 765 gotangle = TRUE; 766 767 /* oops -- have to change our mind */ 768 anglelev = 1; 769 if (!skipping) 770 realanglelev = 1; 771 772 bp = buf; 773 if (quoteit) 774 { 775 *bp++ = '"'; 776 777 /* back up over the '<' and any spaces */ 778 --p; 779 while (isascii(*--p) && isspace(*p)) 780 continue; 781 p++; 782 } 783 for (q = addr; q < p; ) 784 { 785 c = *q++; 786 if (bp < buflim) 787 { 788 if (quoteit && c == '"') 789 *bp++ = '\\'; 790 *bp++ = c; 791 } 792 } 793 if (quoteit) 794 { 795 if (bp == &buf[1]) 796 bp--; 797 else 798 *bp++ = '"'; 799 while ((c = *p++) != '<') 800 { 801 if (bp < buflim) 802 *bp++ = c; 803 } 804 *bp++ = c; 805 } 806 copylev = 0; 807 putgmac = quoteit = FALSE; 808 continue; 809 } 810 811 if (c == '>') 812 { 813 if (anglelev > 0) 814 { 815 anglelev--; 816 if (!skipping) 817 { 818 realanglelev--; 819 buflim++; 820 } 821 } 822 else if (!skipping) 823 { 824 /* syntax error: unmatched > */ 825 if (copylev > 0) 826 bp--; 827 quoteit = TRUE; 828 continue; 829 } 830 if (copylev++ <= 0) 831 *bp++ = c; 832 continue; 833 } 834 835 /* must be a real address character */ 836 putg: 837 if (copylev <= 0 && !putgmac) 838 { 839 *bp++ = MACROEXPAND; 840 *bp++ = 'g'; 841 putgmac = TRUE; 842 } 843 } 844 845 /* repair any syntactic damage */ 846 if (realqmode) 847 *bp++ = '"'; 848 while (realcmtlev-- > 0) 849 *bp++ = ')'; 850 while (realanglelev-- > 0) 851 *bp++ = '>'; 852 *bp++ = '\0'; 853 854 if (tTd(33, 1)) 855 printf("crackaddr=>`%s'\n", buf); 856 857 return (buf); 858 } 859 /* 860 ** PUTHEADER -- put the header part of a message from the in-core copy 861 ** 862 ** Parameters: 863 ** mci -- the connection information. 864 ** e -- envelope to use. 865 ** 866 ** Returns: 867 ** none. 868 ** 869 ** Side Effects: 870 ** none. 871 */ 872 873 /* 874 * Macro for fast max (not available in e.g. DG/UX, 386/ix). 875 */ 876 #ifndef MAX 877 # define MAX(a,b) (((a)>(b))?(a):(b)) 878 #endif 879 880 putheader(mci, e) 881 register MCI *mci; 882 register ENVELOPE *e; 883 { 884 char buf[MAX(MAXLINE,BUFSIZ)]; 885 register HDR *h; 886 char obuf[MAXLINE]; 887 888 if (tTd(34, 1)) 889 printf("--- putheader, mailer = %s ---\n", 890 mci->mci_mailer->m_name); 891 892 for (h = e->e_header; h != NULL; h = h->h_link) 893 { 894 register char *p; 895 extern bool bitintersect(); 896 897 if (tTd(34, 11)) 898 { 899 printf(" %s: ", h->h_field); 900 xputs(h->h_value); 901 } 902 903 if (bitset(H_CHECK|H_ACHECK, h->h_flags) && 904 !bitintersect(h->h_mflags, mci->mci_mailer->m_flags)) 905 { 906 if (tTd(34, 11)) 907 printf(" (skipped)\n"); 908 continue; 909 } 910 911 /* handle Resent-... headers specially */ 912 if (bitset(H_RESENT, h->h_flags) && !bitset(EF_RESENT, e->e_flags)) 913 { 914 if (tTd(34, 11)) 915 printf(" (skipped (resent))\n"); 916 continue; 917 } 918 919 /* macro expand value if generated internally */ 920 p = h->h_value; 921 if (bitset(H_DEFAULT, h->h_flags)) 922 { 923 expand(p, buf, &buf[sizeof buf], e); 924 p = buf; 925 if (p == NULL || *p == '\0') 926 { 927 if (tTd(34, 11)) 928 printf(" (skipped -- null value)\n"); 929 continue; 930 } 931 } 932 933 if (tTd(34, 11)) 934 printf("\n"); 935 936 if (bitset(H_FROM|H_RCPT, h->h_flags)) 937 { 938 /* address field */ 939 bool oldstyle = bitset(EF_OLDSTYLE, e->e_flags); 940 941 if (bitset(H_FROM, h->h_flags)) 942 oldstyle = FALSE; 943 commaize(h, p, oldstyle, mci, e); 944 } 945 else 946 { 947 /* vanilla header line */ 948 register char *nlp; 949 950 (void) sprintf(obuf, "%s: ", h->h_field); 951 while ((nlp = strchr(p, '\n')) != NULL) 952 { 953 *nlp = '\0'; 954 (void) strcat(obuf, p); 955 *nlp = '\n'; 956 putline(obuf, mci); 957 p = ++nlp; 958 obuf[0] = '\0'; 959 } 960 (void) strcat(obuf, p); 961 putline(obuf, mci); 962 } 963 } 964 } 965 /* 966 ** COMMAIZE -- output a header field, making a comma-translated list. 967 ** 968 ** Parameters: 969 ** h -- the header field to output. 970 ** p -- the value to put in it. 971 ** oldstyle -- TRUE if this is an old style header. 972 ** mci -- the connection information. 973 ** e -- the envelope containing the message. 974 ** 975 ** Returns: 976 ** none. 977 ** 978 ** Side Effects: 979 ** outputs "p" to file "fp". 980 */ 981 982 void 983 commaize(h, p, oldstyle, mci, e) 984 register HDR *h; 985 register char *p; 986 bool oldstyle; 987 register MCI *mci; 988 register ENVELOPE *e; 989 { 990 register char *obp; 991 int opos; 992 bool firstone = TRUE; 993 char obuf[MAXLINE + 3]; 994 995 /* 996 ** Output the address list translated by the 997 ** mailer and with commas. 998 */ 999 1000 if (tTd(14, 2)) 1001 printf("commaize(%s: %s)\n", h->h_field, p); 1002 1003 obp = obuf; 1004 (void) sprintf(obp, "%s: ", h->h_field); 1005 opos = strlen(h->h_field) + 2; 1006 obp += opos; 1007 1008 /* 1009 ** Run through the list of values. 1010 */ 1011 1012 while (*p != '\0') 1013 { 1014 register char *name; 1015 register int c; 1016 char savechar; 1017 int flags; 1018 auto int stat; 1019 1020 /* 1021 ** Find the end of the name. New style names 1022 ** end with a comma, old style names end with 1023 ** a space character. However, spaces do not 1024 ** necessarily delimit an old-style name -- at 1025 ** signs mean keep going. 1026 */ 1027 1028 /* find end of name */ 1029 while ((isascii(*p) && isspace(*p)) || *p == ',') 1030 p++; 1031 name = p; 1032 for (;;) 1033 { 1034 auto char *oldp; 1035 char pvpbuf[PSBUFSIZE]; 1036 1037 (void) prescan(p, oldstyle ? ' ' : ',', pvpbuf, 1038 sizeof pvpbuf, &oldp); 1039 p = oldp; 1040 1041 /* look to see if we have an at sign */ 1042 while (*p != '\0' && isascii(*p) && isspace(*p)) 1043 p++; 1044 1045 if (*p != '@') 1046 { 1047 p = oldp; 1048 break; 1049 } 1050 p += *p == '@' ? 1 : 2; 1051 while (*p != '\0' && isascii(*p) && isspace(*p)) 1052 p++; 1053 } 1054 /* at the end of one complete name */ 1055 1056 /* strip off trailing white space */ 1057 while (p >= name && 1058 ((isascii(*p) && isspace(*p)) || *p == ',' || *p == '\0')) 1059 p--; 1060 if (++p == name) 1061 continue; 1062 savechar = *p; 1063 *p = '\0'; 1064 1065 /* translate the name to be relative */ 1066 flags = RF_HEADERADDR|RF_ADDDOMAIN; 1067 if (bitset(H_FROM, h->h_flags)) 1068 flags |= RF_SENDERADDR; 1069 stat = EX_OK; 1070 name = remotename(name, mci->mci_mailer, flags, &stat, e); 1071 if (*name == '\0') 1072 { 1073 *p = savechar; 1074 continue; 1075 } 1076 1077 /* output the name with nice formatting */ 1078 opos += strlen(name); 1079 if (!firstone) 1080 opos += 2; 1081 if (opos > 78 && !firstone) 1082 { 1083 (void) strcpy(obp, ",\n"); 1084 putline(obuf, mci); 1085 obp = obuf; 1086 (void) sprintf(obp, " "); 1087 opos = strlen(obp); 1088 obp += opos; 1089 opos += strlen(name); 1090 } 1091 else if (!firstone) 1092 { 1093 (void) sprintf(obp, ", "); 1094 obp += 2; 1095 } 1096 1097 while ((c = *name++) != '\0' && obp < &obuf[MAXLINE]) 1098 *obp++ = c; 1099 firstone = FALSE; 1100 *p = savechar; 1101 } 1102 (void) strcpy(obp, "\n"); 1103 putline(obuf, mci); 1104 } 1105 /* 1106 ** COPYHEADER -- copy header list 1107 ** 1108 ** This routine is the equivalent of newstr for header lists 1109 ** 1110 ** Parameters: 1111 ** header -- list of header structures to copy. 1112 ** 1113 ** Returns: 1114 ** a copy of 'header'. 1115 ** 1116 ** Side Effects: 1117 ** none. 1118 */ 1119 1120 HDR * 1121 copyheader(header) 1122 register HDR *header; 1123 { 1124 register HDR *newhdr; 1125 HDR *ret; 1126 register HDR **tail = &ret; 1127 1128 while (header != NULL) 1129 { 1130 newhdr = (HDR *) xalloc(sizeof(HDR)); 1131 STRUCTCOPY(*header, *newhdr); 1132 *tail = newhdr; 1133 tail = &newhdr->h_link; 1134 header = header->h_link; 1135 } 1136 *tail = NULL; 1137 1138 return ret; 1139 } 1140