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 8.32 (Berkeley) 04/14/94"; 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 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 a.q_mailer == LocalMailer && 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 ** e -- the envelope to add them to. 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, e) 226 char *field; 227 char *value; 228 ENVELOPE *e; 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 = &e->e_header; (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 ** e -- the envelope containing the header. 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, e) 277 char *field; 278 register ENVELOPE *e; 279 { 280 register HDR *h; 281 282 for (h = e->e_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); 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); 442 if (p != NULL) 443 e->e_class = priencode(p); 444 if (full) 445 e->e_msgpriority = e->e_msgsize 446 - e->e_class * WkClassFact 447 + e->e_nrcpts * WkRecipFact; 448 449 /* date message originated */ 450 p = hvalue("posted-date", e); 451 if (p == NULL) 452 p = hvalue("date", e); 453 if (p != NULL) 454 define('a', p, e); 455 456 /* 457 ** From person in antiquated ARPANET mode 458 ** required by UK Grey Book e-mail gateways (sigh) 459 */ 460 461 if (OpMode == MD_ARPAFTP) 462 { 463 register struct hdrinfo *hi; 464 465 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 466 { 467 if (bitset(H_FROM, hi->hi_flags) && 468 (!bitset(H_RESENT, hi->hi_flags) || 469 bitset(EF_RESENT, e->e_flags)) && 470 (p = hvalue(hi->hi_field, e)) != NULL) 471 break; 472 } 473 if (hi->hi_field != NULL) 474 { 475 if (tTd(32, 2)) 476 printf("eatheader: setsender(*%s == %s)\n", 477 hi->hi_field, p); 478 setsender(p, e, NULL, TRUE); 479 } 480 } 481 482 /* 483 ** Log collection information. 484 */ 485 486 # ifdef LOG 487 if (full && LogLevel > 4) 488 logsender(e, msgid); 489 # endif /* LOG */ 490 e->e_flags &= ~EF_LOGSENDER; 491 } 492 /* 493 ** LOGSENDER -- log sender information 494 ** 495 ** Parameters: 496 ** e -- the envelope to log 497 ** msgid -- the message id 498 ** 499 ** Returns: 500 ** none 501 */ 502 503 logsender(e, msgid) 504 register ENVELOPE *e; 505 char *msgid; 506 { 507 # ifdef LOG 508 char *name; 509 register char *sbp; 510 register char *p; 511 char hbuf[MAXNAME]; 512 char sbuf[MAXLINE]; 513 514 if (bitset(EF_RESPONSE, e->e_flags)) 515 name = "[RESPONSE]"; 516 else if ((name = macvalue('_', e)) != NULL) 517 ; 518 else if (RealHostName == NULL) 519 name = "localhost"; 520 else if (RealHostName[0] == '[') 521 name = RealHostName; 522 else 523 { 524 name = hbuf; 525 (void) sprintf(hbuf, "%.80s", RealHostName); 526 if (RealHostAddr.sa.sa_family != 0) 527 { 528 p = &hbuf[strlen(hbuf)]; 529 (void) sprintf(p, " (%s)", 530 anynet_ntoa(&RealHostAddr)); 531 } 532 } 533 534 /* some versions of syslog only take 5 printf args */ 535 # if (SYSLOG_BUFSIZE) >= 256 536 sbp = sbuf; 537 sprintf(sbp, "from=%.200s, size=%ld, class=%d, pri=%ld, nrcpts=%d", 538 e->e_from.q_paddr, e->e_msgsize, e->e_class, 539 e->e_msgpriority, e->e_nrcpts); 540 sbp += strlen(sbp); 541 if (msgid != NULL) 542 { 543 sprintf(sbp, ", msgid=%.100s", msgid); 544 sbp += strlen(sbp); 545 } 546 if (e->e_bodytype != NULL) 547 { 548 (void) sprintf(sbp, ", bodytype=%.20s", e->e_bodytype); 549 sbp += strlen(sbp); 550 } 551 p = macvalue('r', e); 552 if (p != NULL) 553 (void) sprintf(sbp, ", proto=%.20s", p); 554 syslog(LOG_INFO, "%s: %s, relay=%s", 555 e->e_id, sbuf, name); 556 557 # else /* short syslog buffer */ 558 559 syslog(LOG_INFO, "%s: from=%s", 560 e->e_id, shortenstring(e->e_from.q_paddr, 83)); 561 syslog(LOG_INFO, "%s: size=%ld, class=%ld, pri=%ld, nrcpts=%d", 562 e->e_id, e->e_msgsize, e->e_class, 563 e->e_msgpriority, e->e_nrcpts); 564 if (msgid != NULL) 565 syslog(LOG_INFO, "%s: msgid=%s", e->e_id, msgid); 566 sbp = sbuf; 567 sprintf(sbp, "%s:", e->e_id); 568 sbp += strlen(sbp); 569 if (e->e_bodytype != NULL) 570 { 571 sprintf(sbp, " bodytype=%s,", e->e_bodytype); 572 sbp += strlen(sbp); 573 } 574 p = macvalue('r', e); 575 if (p != NULL) 576 { 577 sprintf(sbp, " proto=%s,", p); 578 sbp += strlen(sbp); 579 } 580 syslog(LOG_INFO, "%s relay=%s", sbuf, name); 581 # endif 582 # endif 583 } 584 /* 585 ** PRIENCODE -- encode external priority names into internal values. 586 ** 587 ** Parameters: 588 ** p -- priority in ascii. 589 ** 590 ** Returns: 591 ** priority as a numeric level. 592 ** 593 ** Side Effects: 594 ** none. 595 */ 596 597 priencode(p) 598 char *p; 599 { 600 register int i; 601 602 for (i = 0; i < NumPriorities; i++) 603 { 604 if (!strcasecmp(p, Priorities[i].pri_name)) 605 return (Priorities[i].pri_val); 606 } 607 608 /* unknown priority */ 609 return (0); 610 } 611 /* 612 ** CRACKADDR -- parse an address and turn it into a macro 613 ** 614 ** This doesn't actually parse the address -- it just extracts 615 ** it and replaces it with "$g". The parse is totally ad hoc 616 ** and isn't even guaranteed to leave something syntactically 617 ** identical to what it started with. However, it does leave 618 ** something semantically identical. 619 ** 620 ** This algorithm has been cleaned up to handle a wider range 621 ** of cases -- notably quoted and backslash escaped strings. 622 ** This modification makes it substantially better at preserving 623 ** the original syntax. 624 ** 625 ** Parameters: 626 ** addr -- the address to be cracked. 627 ** 628 ** Returns: 629 ** a pointer to the new version. 630 ** 631 ** Side Effects: 632 ** none. 633 ** 634 ** Warning: 635 ** The return value is saved in local storage and should 636 ** be copied if it is to be reused. 637 */ 638 639 char * 640 crackaddr(addr) 641 register char *addr; 642 { 643 register char *p; 644 register char c; 645 int cmtlev; 646 int realcmtlev; 647 int anglelev, realanglelev; 648 int copylev; 649 bool qmode; 650 bool realqmode; 651 bool skipping; 652 bool putgmac = FALSE; 653 bool quoteit = FALSE; 654 bool gotangle = FALSE; 655 register char *bp; 656 char *buflim; 657 static char buf[MAXNAME]; 658 659 if (tTd(33, 1)) 660 printf("crackaddr(%s)\n", addr); 661 662 /* strip leading spaces */ 663 while (*addr != '\0' && isascii(*addr) && isspace(*addr)) 664 addr++; 665 666 /* 667 ** Start by assuming we have no angle brackets. This will be 668 ** adjusted later if we find them. 669 */ 670 671 bp = buf; 672 buflim = &buf[sizeof buf - 5]; 673 p = addr; 674 copylev = anglelev = realanglelev = cmtlev = realcmtlev = 0; 675 qmode = realqmode = FALSE; 676 677 while ((c = *p++) != '\0') 678 { 679 /* 680 ** If the buffer is overful, go into a special "skipping" 681 ** mode that tries to keep legal syntax but doesn't actually 682 ** output things. 683 */ 684 685 skipping = bp >= buflim; 686 687 if (copylev > 0 && !skipping) 688 *bp++ = c; 689 690 /* check for backslash escapes */ 691 if (c == '\\') 692 { 693 /* arrange to quote the address */ 694 if (cmtlev <= 0 && !qmode) 695 quoteit = TRUE; 696 697 if ((c = *p++) == '\0') 698 { 699 /* too far */ 700 p--; 701 goto putg; 702 } 703 if (copylev > 0 && !skipping) 704 *bp++ = c; 705 goto putg; 706 } 707 708 /* check for quoted strings */ 709 if (c == '"' && cmtlev <= 0) 710 { 711 qmode = !qmode; 712 if (copylev > 0 && !skipping) 713 realqmode = !realqmode; 714 continue; 715 } 716 if (qmode) 717 goto putg; 718 719 /* check for comments */ 720 if (c == '(') 721 { 722 cmtlev++; 723 724 /* allow space for closing paren */ 725 if (!skipping) 726 { 727 buflim--; 728 realcmtlev++; 729 if (copylev++ <= 0) 730 { 731 *bp++ = ' '; 732 *bp++ = c; 733 } 734 } 735 } 736 if (cmtlev > 0) 737 { 738 if (c == ')') 739 { 740 cmtlev--; 741 copylev--; 742 if (!skipping) 743 { 744 realcmtlev--; 745 buflim++; 746 } 747 } 748 continue; 749 } 750 else if (c == ')') 751 { 752 /* syntax error: unmatched ) */ 753 if (copylev > 0 && !skipping) 754 bp--; 755 } 756 757 /* check for characters that may have to be quoted */ 758 if (strchr(".'@,;:\\()[]", c) != NULL) 759 { 760 /* 761 ** If these occur as the phrase part of a <> 762 ** construct, but are not inside of () or already 763 ** quoted, they will have to be quoted. Note that 764 ** now (but don't actually do the quoting). 765 */ 766 767 if (cmtlev <= 0 && !qmode) 768 quoteit = TRUE; 769 } 770 771 /* check for angle brackets */ 772 if (c == '<') 773 { 774 register char *q; 775 776 /* assume first of two angles is bogus */ 777 if (gotangle) 778 quoteit = TRUE; 779 gotangle = TRUE; 780 781 /* oops -- have to change our mind */ 782 anglelev = 1; 783 if (!skipping) 784 realanglelev = 1; 785 786 bp = buf; 787 if (quoteit) 788 { 789 *bp++ = '"'; 790 791 /* back up over the '<' and any spaces */ 792 --p; 793 while (isascii(*--p) && isspace(*p)) 794 continue; 795 p++; 796 } 797 for (q = addr; q < p; ) 798 { 799 c = *q++; 800 if (bp < buflim) 801 { 802 if (quoteit && c == '"') 803 *bp++ = '\\'; 804 *bp++ = c; 805 } 806 } 807 if (quoteit) 808 { 809 if (bp == &buf[1]) 810 bp--; 811 else 812 *bp++ = '"'; 813 while ((c = *p++) != '<') 814 { 815 if (bp < buflim) 816 *bp++ = c; 817 } 818 *bp++ = c; 819 } 820 copylev = 0; 821 putgmac = quoteit = FALSE; 822 continue; 823 } 824 825 if (c == '>') 826 { 827 if (anglelev > 0) 828 { 829 anglelev--; 830 if (!skipping) 831 { 832 realanglelev--; 833 buflim++; 834 } 835 } 836 else if (!skipping) 837 { 838 /* syntax error: unmatched > */ 839 if (copylev > 0) 840 bp--; 841 quoteit = TRUE; 842 continue; 843 } 844 if (copylev++ <= 0) 845 *bp++ = c; 846 continue; 847 } 848 849 /* must be a real address character */ 850 putg: 851 if (copylev <= 0 && !putgmac) 852 { 853 *bp++ = MACROEXPAND; 854 *bp++ = 'g'; 855 putgmac = TRUE; 856 } 857 } 858 859 /* repair any syntactic damage */ 860 if (realqmode) 861 *bp++ = '"'; 862 while (realcmtlev-- > 0) 863 *bp++ = ')'; 864 while (realanglelev-- > 0) 865 *bp++ = '>'; 866 *bp++ = '\0'; 867 868 if (tTd(33, 1)) 869 printf("crackaddr=>`%s'\n", buf); 870 871 return (buf); 872 } 873 /* 874 ** PUTHEADER -- put the header part of a message from the in-core copy 875 ** 876 ** Parameters: 877 ** mci -- the connection information. 878 ** e -- envelope to use. 879 ** 880 ** Returns: 881 ** none. 882 ** 883 ** Side Effects: 884 ** none. 885 */ 886 887 /* 888 * Macro for fast max (not available in e.g. DG/UX, 386/ix). 889 */ 890 #ifndef MAX 891 # define MAX(a,b) (((a)>(b))?(a):(b)) 892 #endif 893 894 putheader(mci, e) 895 register MCI *mci; 896 register ENVELOPE *e; 897 { 898 char buf[MAX(MAXLINE,BUFSIZ)]; 899 register HDR *h; 900 char obuf[MAXLINE]; 901 902 if (tTd(34, 1)) 903 printf("--- putheader, mailer = %s ---\n", 904 mci->mci_mailer->m_name); 905 906 for (h = e->e_header; h != NULL; h = h->h_link) 907 { 908 register char *p; 909 extern bool bitintersect(); 910 911 if (tTd(34, 11)) 912 { 913 printf(" %s: ", h->h_field); 914 xputs(h->h_value); 915 } 916 917 if (bitset(H_CHECK|H_ACHECK, h->h_flags) && 918 !bitintersect(h->h_mflags, mci->mci_mailer->m_flags)) 919 { 920 if (tTd(34, 11)) 921 printf(" (skipped)\n"); 922 continue; 923 } 924 925 /* handle Resent-... headers specially */ 926 if (bitset(H_RESENT, h->h_flags) && !bitset(EF_RESENT, e->e_flags)) 927 { 928 if (tTd(34, 11)) 929 printf(" (skipped (resent))\n"); 930 continue; 931 } 932 933 /* suppress return receipts if requested */ 934 if (bitset(H_RECEIPTTO, h->h_flags) && 935 bitset(EF_NORECEIPT, e->e_flags)) 936 { 937 if (tTd(34, 11)) 938 printf(" (skipped (receipt))\n"); 939 continue; 940 } 941 942 /* macro expand value if generated internally */ 943 p = h->h_value; 944 if (bitset(H_DEFAULT, h->h_flags)) 945 { 946 expand(p, buf, &buf[sizeof buf], e); 947 p = buf; 948 if (p == NULL || *p == '\0') 949 { 950 if (tTd(34, 11)) 951 printf(" (skipped -- null value)\n"); 952 continue; 953 } 954 } 955 956 if (tTd(34, 11)) 957 printf("\n"); 958 959 if (bitset(H_FROM|H_RCPT, h->h_flags)) 960 { 961 /* address field */ 962 bool oldstyle = bitset(EF_OLDSTYLE, e->e_flags); 963 964 if (bitset(H_FROM, h->h_flags)) 965 oldstyle = FALSE; 966 commaize(h, p, oldstyle, mci, e); 967 } 968 else 969 { 970 /* vanilla header line */ 971 register char *nlp; 972 973 (void) sprintf(obuf, "%s: ", h->h_field); 974 while ((nlp = strchr(p, '\n')) != NULL) 975 { 976 *nlp = '\0'; 977 (void) strcat(obuf, p); 978 *nlp = '\n'; 979 putline(obuf, mci); 980 p = ++nlp; 981 obuf[0] = '\0'; 982 } 983 (void) strcat(obuf, p); 984 putline(obuf, mci); 985 } 986 } 987 } 988 /* 989 ** COMMAIZE -- output a header field, making a comma-translated list. 990 ** 991 ** Parameters: 992 ** h -- the header field to output. 993 ** p -- the value to put in it. 994 ** oldstyle -- TRUE if this is an old style header. 995 ** mci -- the connection information. 996 ** e -- the envelope containing the message. 997 ** 998 ** Returns: 999 ** none. 1000 ** 1001 ** Side Effects: 1002 ** outputs "p" to file "fp". 1003 */ 1004 1005 void 1006 commaize(h, p, oldstyle, mci, e) 1007 register HDR *h; 1008 register char *p; 1009 bool oldstyle; 1010 register MCI *mci; 1011 register ENVELOPE *e; 1012 { 1013 register char *obp; 1014 int opos; 1015 int omax; 1016 bool firstone = TRUE; 1017 char obuf[MAXLINE + 3]; 1018 1019 /* 1020 ** Output the address list translated by the 1021 ** mailer and with commas. 1022 */ 1023 1024 if (tTd(14, 2)) 1025 printf("commaize(%s: %s)\n", h->h_field, p); 1026 1027 obp = obuf; 1028 (void) sprintf(obp, "%s: ", h->h_field); 1029 opos = strlen(h->h_field) + 2; 1030 obp += opos; 1031 omax = mci->mci_mailer->m_linelimit - 2; 1032 if (omax < 0 || omax > 78) 1033 omax = 78; 1034 1035 /* 1036 ** Run through the list of values. 1037 */ 1038 1039 while (*p != '\0') 1040 { 1041 register char *name; 1042 register int c; 1043 char savechar; 1044 int flags; 1045 auto int stat; 1046 1047 /* 1048 ** Find the end of the name. New style names 1049 ** end with a comma, old style names end with 1050 ** a space character. However, spaces do not 1051 ** necessarily delimit an old-style name -- at 1052 ** signs mean keep going. 1053 */ 1054 1055 /* find end of name */ 1056 while ((isascii(*p) && isspace(*p)) || *p == ',') 1057 p++; 1058 name = p; 1059 for (;;) 1060 { 1061 auto char *oldp; 1062 char pvpbuf[PSBUFSIZE]; 1063 1064 (void) prescan(p, oldstyle ? ' ' : ',', pvpbuf, 1065 sizeof pvpbuf, &oldp); 1066 p = oldp; 1067 1068 /* look to see if we have an at sign */ 1069 while (*p != '\0' && isascii(*p) && isspace(*p)) 1070 p++; 1071 1072 if (*p != '@') 1073 { 1074 p = oldp; 1075 break; 1076 } 1077 p += *p == '@' ? 1 : 2; 1078 while (*p != '\0' && isascii(*p) && isspace(*p)) 1079 p++; 1080 } 1081 /* at the end of one complete name */ 1082 1083 /* strip off trailing white space */ 1084 while (p >= name && 1085 ((isascii(*p) && isspace(*p)) || *p == ',' || *p == '\0')) 1086 p--; 1087 if (++p == name) 1088 continue; 1089 savechar = *p; 1090 *p = '\0'; 1091 1092 /* translate the name to be relative */ 1093 flags = RF_HEADERADDR|RF_ADDDOMAIN; 1094 if (bitset(H_FROM, h->h_flags)) 1095 flags |= RF_SENDERADDR; 1096 stat = EX_OK; 1097 name = remotename(name, mci->mci_mailer, flags, &stat, e); 1098 if (*name == '\0') 1099 { 1100 *p = savechar; 1101 continue; 1102 } 1103 1104 /* output the name with nice formatting */ 1105 opos += strlen(name); 1106 if (!firstone) 1107 opos += 2; 1108 if (opos > omax && !firstone) 1109 { 1110 (void) strcpy(obp, ",\n"); 1111 putline(obuf, mci); 1112 obp = obuf; 1113 (void) strcpy(obp, " "); 1114 opos = strlen(obp); 1115 obp += opos; 1116 opos += strlen(name); 1117 } 1118 else if (!firstone) 1119 { 1120 (void) strcpy(obp, ", "); 1121 obp += 2; 1122 } 1123 1124 while ((c = *name++) != '\0' && obp < &obuf[MAXLINE]) 1125 *obp++ = c; 1126 firstone = FALSE; 1127 *p = savechar; 1128 } 1129 (void) strcpy(obp, "\n"); 1130 putline(obuf, mci); 1131 } 1132 /* 1133 ** COPYHEADER -- copy header list 1134 ** 1135 ** This routine is the equivalent of newstr for header lists 1136 ** 1137 ** Parameters: 1138 ** header -- list of header structures to copy. 1139 ** 1140 ** Returns: 1141 ** a copy of 'header'. 1142 ** 1143 ** Side Effects: 1144 ** none. 1145 */ 1146 1147 HDR * 1148 copyheader(header) 1149 register HDR *header; 1150 { 1151 register HDR *newhdr; 1152 HDR *ret; 1153 register HDR **tail = &ret; 1154 1155 while (header != NULL) 1156 { 1157 newhdr = (HDR *) xalloc(sizeof(HDR)); 1158 STRUCTCOPY(*header, *newhdr); 1159 *tail = newhdr; 1160 tail = &newhdr->h_link; 1161 header = header->h_link; 1162 } 1163 *tail = NULL; 1164 1165 return ret; 1166 } 1167