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 8.37 (Berkeley) 10/08/94"; 11 #endif /* not lint */ 12 13 # include <errno.h> 14 # include "sendmail.h" 15 16 /* 17 ** CHOMPHEADER -- process and save a header line. 18 ** 19 ** Called by collect and by readcf to deal with header lines. 20 ** 21 ** Parameters: 22 ** line -- header as a text line. 23 ** def -- if set, this is a default value. 24 ** e -- the envelope including this header. 25 ** 26 ** Returns: 27 ** flags for this header. 28 ** 29 ** Side Effects: 30 ** The header is saved on the header list. 31 ** Contents of 'line' are destroyed. 32 */ 33 34 chompheader(line, def, e) 35 char *line; 36 bool def; 37 register ENVELOPE *e; 38 { 39 register char *p; 40 register HDR *h; 41 HDR **hp; 42 char *fname; 43 char *fvalue; 44 struct hdrinfo *hi; 45 bool cond = FALSE; 46 BITMAP mopts; 47 char buf[MAXNAME]; 48 49 if (tTd(31, 6)) 50 printf("chompheader: %s\n", line); 51 52 /* strip off options */ 53 clrbitmap(mopts); 54 p = line; 55 if (*p == '?') 56 { 57 /* have some */ 58 register char *q = strchr(p + 1, *p); 59 60 if (q != NULL) 61 { 62 *q++ = '\0'; 63 while (*++p != '\0') 64 setbitn(*p, mopts); 65 p = q; 66 } 67 else 68 usrerr("553 header syntax error, line \"%s\"", line); 69 cond = TRUE; 70 } 71 72 /* find canonical name */ 73 fname = p; 74 while (isascii(*p) && isgraph(*p) && *p != ':') 75 p++; 76 fvalue = p; 77 while (isascii(*p) && isspace(*p)) 78 p++; 79 if (*p++ != ':' || fname == fvalue) 80 { 81 syserr("553 header syntax error, line \"%s\"", line); 82 return (0); 83 } 84 *fvalue = '\0'; 85 fvalue = p; 86 87 /* strip field value on front */ 88 if (*fvalue == ' ') 89 fvalue++; 90 91 /* see if it is a known type */ 92 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 93 { 94 if (strcasecmp(hi->hi_field, fname) == 0) 95 break; 96 } 97 98 if (tTd(31, 9)) 99 { 100 if (hi->hi_field == NULL) 101 printf("no header match\n"); 102 else 103 printf("header match, hi_flags=%x\n", hi->hi_flags); 104 } 105 106 /* see if this is a resent message */ 107 if (!def && bitset(H_RESENT, hi->hi_flags)) 108 e->e_flags |= EF_RESENT; 109 110 /* if this means "end of header" quit now */ 111 if (bitset(H_EOH, hi->hi_flags)) 112 return (hi->hi_flags); 113 114 /* 115 ** Drop explicit From: if same as what we would generate. 116 ** This is to make MH (which doesn't always give a full name) 117 ** insert the full name information in all circumstances. 118 */ 119 120 p = "resent-from"; 121 if (!bitset(EF_RESENT, e->e_flags)) 122 p += 7; 123 if (!def && !bitset(EF_QUEUERUN, e->e_flags) && strcasecmp(fname, p) == 0) 124 { 125 if (tTd(31, 2)) 126 { 127 printf("comparing header from (%s) against default (%s or %s)\n", 128 fvalue, e->e_from.q_paddr, e->e_from.q_user); 129 } 130 if (e->e_from.q_paddr != NULL && 131 (strcmp(fvalue, e->e_from.q_paddr) == 0 || 132 strcmp(fvalue, e->e_from.q_user) == 0)) 133 return (hi->hi_flags); 134 #ifdef MAYBENEXTRELEASE /* XXX UNTESTED XXX UNTESTED XXX UNTESTED XXX */ 135 #ifdef USERDB 136 else 137 { 138 auto ADDRESS a; 139 char *fancy; 140 bool oldSuprErrs = SuprErrs; 141 extern char *crackaddr(); 142 extern char *udbsender(); 143 144 /* 145 ** Try doing USERDB rewriting even on fully commented 146 ** names; this saves the "comment" information (such 147 ** as full name) and rewrites the electronic part. 148 ** 149 ** XXX This code doesn't belong here -- parsing should 150 ** XXX not be done during collect() phase because 151 ** XXX error messages can confuse the SMTP phase. 152 ** XXX Setting SuprErrs is a crude hack around this 153 ** XXX problem. 154 */ 155 156 if (OpMode == MD_SMTP || OpMode == MD_ARPAFTP) 157 SuprErrs = TRUE; 158 fancy = crackaddr(fvalue); 159 if (parseaddr(fvalue, &a, RF_COPYNONE, '\0', NULL, e) != NULL && 160 bitnset(M_CHECKUDB, a.q_mailer->m_flags) && 161 (p = udbsender(a.q_user)) != NULL) 162 { 163 char *oldg = macvalue('g', e); 164 165 define('g', p, e); 166 expand(fancy, buf, &buf[sizeof buf], e); 167 define('g', oldg, e); 168 fvalue = buf; 169 } 170 SuprErrs = oldSuprErrs; 171 } 172 #endif 173 #endif 174 } 175 176 /* delete default value for this header */ 177 for (hp = &e->e_header; (h = *hp) != NULL; hp = &h->h_link) 178 { 179 if (strcasecmp(fname, h->h_field) == 0 && 180 bitset(H_DEFAULT, h->h_flags) && 181 !bitset(H_FORCE, h->h_flags)) 182 h->h_value = NULL; 183 } 184 185 /* create a new node */ 186 h = (HDR *) xalloc(sizeof *h); 187 h->h_field = newstr(fname); 188 h->h_value = newstr(fvalue); 189 h->h_link = NULL; 190 bcopy((char *) mopts, (char *) h->h_mflags, sizeof mopts); 191 *hp = h; 192 h->h_flags = hi->hi_flags; 193 if (def) 194 h->h_flags |= H_DEFAULT; 195 if (cond) 196 h->h_flags |= H_CHECK; 197 198 /* hack to see if this is a new format message */ 199 if (!def && bitset(H_RCPT|H_FROM, h->h_flags) && 200 (strchr(fvalue, ',') != NULL || strchr(fvalue, '(') != NULL || 201 strchr(fvalue, '<') != NULL || strchr(fvalue, ';') != NULL)) 202 { 203 e->e_flags &= ~EF_OLDSTYLE; 204 } 205 206 return (h->h_flags); 207 } 208 /* 209 ** ADDHEADER -- add a header entry to the end of the queue. 210 ** 211 ** This bypasses the special checking of chompheader. 212 ** 213 ** Parameters: 214 ** field -- the name of the header field. 215 ** value -- the value of the field. 216 ** hp -- an indirect pointer to the header structure list. 217 ** 218 ** Returns: 219 ** none. 220 ** 221 ** Side Effects: 222 ** adds the field on the list of headers for this envelope. 223 */ 224 225 addheader(field, value, hdrlist) 226 char *field; 227 char *value; 228 HDR **hdrlist; 229 { 230 register HDR *h; 231 register struct hdrinfo *hi; 232 HDR **hp; 233 234 /* find info struct */ 235 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 236 { 237 if (strcasecmp(field, hi->hi_field) == 0) 238 break; 239 } 240 241 /* find current place in list -- keep back pointer? */ 242 for (hp = hdrlist; (h = *hp) != NULL; hp = &h->h_link) 243 { 244 if (strcasecmp(field, h->h_field) == 0) 245 break; 246 } 247 248 /* allocate space for new header */ 249 h = (HDR *) xalloc(sizeof *h); 250 h->h_field = field; 251 h->h_value = newstr(value); 252 h->h_link = *hp; 253 h->h_flags = hi->hi_flags | H_DEFAULT; 254 clrbitmap(h->h_mflags); 255 *hp = h; 256 } 257 /* 258 ** HVALUE -- return value of a header. 259 ** 260 ** Only "real" fields (i.e., ones that have not been supplied 261 ** as a default) are used. 262 ** 263 ** Parameters: 264 ** field -- the field name. 265 ** header -- the header list. 266 ** 267 ** Returns: 268 ** pointer to the value part. 269 ** NULL if not found. 270 ** 271 ** Side Effects: 272 ** none. 273 */ 274 275 char * 276 hvalue(field, header) 277 char *field; 278 HDR *header; 279 { 280 register HDR *h; 281 282 for (h = header; h != NULL; h = h->h_link) 283 { 284 if (!bitset(H_DEFAULT, h->h_flags) && 285 strcasecmp(h->h_field, field) == 0) 286 return (h->h_value); 287 } 288 return (NULL); 289 } 290 /* 291 ** ISHEADER -- predicate telling if argument is a header. 292 ** 293 ** A line is a header if it has a single word followed by 294 ** optional white space followed by a colon. 295 ** 296 ** Parameters: 297 ** s -- string to check for possible headerness. 298 ** 299 ** Returns: 300 ** TRUE if s is a header. 301 ** FALSE otherwise. 302 ** 303 ** Side Effects: 304 ** none. 305 */ 306 307 bool 308 isheader(s) 309 register char *s; 310 { 311 while (*s > ' ' && *s != ':' && *s != '\0') 312 s++; 313 314 /* following technically violates RFC822 */ 315 while (isascii(*s) && isspace(*s)) 316 s++; 317 318 return (*s == ':'); 319 } 320 /* 321 ** EATHEADER -- run through the stored header and extract info. 322 ** 323 ** Parameters: 324 ** e -- the envelope to process. 325 ** full -- if set, do full processing (e.g., compute 326 ** message priority). 327 ** 328 ** Returns: 329 ** none. 330 ** 331 ** Side Effects: 332 ** Sets a bunch of global variables from information 333 ** in the collected header. 334 ** Aborts the message if the hop count is exceeded. 335 */ 336 337 eatheader(e, full) 338 register ENVELOPE *e; 339 bool full; 340 { 341 register HDR *h; 342 register char *p; 343 int hopcnt = 0; 344 char *msgid; 345 char buf[MAXLINE]; 346 347 /* 348 ** Set up macros for possible expansion in headers. 349 */ 350 351 define('f', e->e_sender, e); 352 define('g', e->e_sender, e); 353 if (e->e_origrcpt != NULL && *e->e_origrcpt != '\0') 354 define('u', e->e_origrcpt, e); 355 else 356 define('u', NULL, e); 357 358 /* full name of from person */ 359 p = hvalue("full-name", e->e_header); 360 if (p != NULL) 361 define('x', p, e); 362 363 if (tTd(32, 1)) 364 printf("----- collected header -----\n"); 365 msgid = "<none>"; 366 for (h = e->e_header; h != NULL; h = h->h_link) 367 { 368 if (h->h_value == NULL) 369 { 370 if (tTd(32, 1)) 371 printf("%s: <NULL>\n", h->h_field); 372 continue; 373 } 374 375 /* do early binding */ 376 if (bitset(H_DEFAULT, h->h_flags)) 377 { 378 expand(h->h_value, buf, &buf[sizeof buf], e); 379 if (buf[0] != '\0') 380 { 381 h->h_value = newstr(buf); 382 h->h_flags &= ~H_DEFAULT; 383 } 384 } 385 386 if (tTd(32, 1)) 387 { 388 printf("%s: ", h->h_field); 389 xputs(h->h_value); 390 printf("\n"); 391 } 392 393 /* count the number of times it has been processed */ 394 if (bitset(H_TRACE, h->h_flags)) 395 hopcnt++; 396 397 /* send to this person if we so desire */ 398 if (GrabTo && bitset(H_RCPT, h->h_flags) && 399 !bitset(H_DEFAULT, h->h_flags) && 400 (!bitset(EF_RESENT, e->e_flags) || bitset(H_RESENT, h->h_flags))) 401 { 402 int saveflags = e->e_flags; 403 404 (void) sendtolist(h->h_value, NULLADDR, 405 &e->e_sendqueue, e); 406 407 /* delete fatal errors generated by this address */ 408 if (!GrabTo && !bitset(EF_FATALERRS, saveflags)) 409 e->e_flags &= ~EF_FATALERRS; 410 } 411 412 /* save the message-id for logging */ 413 if (full && strcasecmp(h->h_field, "message-id") == 0) 414 { 415 msgid = h->h_value; 416 while (isascii(*msgid) && isspace(*msgid)) 417 msgid++; 418 } 419 420 /* see if this is a return-receipt header */ 421 if (bitset(H_RECEIPTTO, h->h_flags)) 422 e->e_receiptto = h->h_value; 423 424 /* see if this is an errors-to header */ 425 if (UseErrorsTo && bitset(H_ERRORSTO, h->h_flags)) 426 (void) sendtolist(h->h_value, NULLADDR, 427 &e->e_errorqueue, e); 428 } 429 if (tTd(32, 1)) 430 printf("----------------------------\n"); 431 432 /* if we are just verifying (that is, sendmail -t -bv), drop out now */ 433 if (OpMode == MD_VERIFY) 434 return; 435 436 /* store hop count */ 437 if (hopcnt > e->e_hopcount) 438 e->e_hopcount = hopcnt; 439 440 /* message priority */ 441 p = hvalue("precedence", e->e_header); 442 if (p != NULL) 443 e->e_class = priencode(p); 444 if (full) 445 { 446 e->e_msgpriority = e->e_msgsize 447 - e->e_class * WkClassFact 448 + e->e_nrcpts * WkRecipFact; 449 if (e->e_class < 0) 450 e->e_timeoutclass = TOC_NONURGENT; 451 else if (e->e_class > 0) 452 e->e_timeoutclass = TOC_URGENT; 453 } 454 455 /* message timeout priority */ 456 p = hvalue("priority", e->e_header); 457 if (full && p != NULL) 458 { 459 /* (this should be in the configuration file) */ 460 if (strcasecmp(p, "urgent")) 461 e->e_timeoutclass = TOC_URGENT; 462 else if (strcasecmp(p, "normal")) 463 e->e_timeoutclass = TOC_NORMAL; 464 else if (strcasecmp(p, "non-urgent")) 465 e->e_timeoutclass = TOC_NONURGENT; 466 } 467 468 /* date message originated */ 469 p = hvalue("posted-date", e->e_header); 470 if (p == NULL) 471 p = hvalue("date", e->e_header); 472 if (p != NULL) 473 define('a', p, e); 474 475 /* 476 ** From person in antiquated ARPANET mode 477 ** required by UK Grey Book e-mail gateways (sigh) 478 */ 479 480 if (OpMode == MD_ARPAFTP) 481 { 482 register struct hdrinfo *hi; 483 484 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 485 { 486 if (bitset(H_FROM, hi->hi_flags) && 487 (!bitset(H_RESENT, hi->hi_flags) || 488 bitset(EF_RESENT, e->e_flags)) && 489 (p = hvalue(hi->hi_field, e->e_header)) != NULL) 490 break; 491 } 492 if (hi->hi_field != NULL) 493 { 494 if (tTd(32, 2)) 495 printf("eatheader: setsender(*%s == %s)\n", 496 hi->hi_field, p); 497 setsender(p, e, NULL, TRUE); 498 } 499 } 500 501 /* 502 ** Log collection information. 503 */ 504 505 # ifdef LOG 506 if (full && LogLevel > 4) 507 logsender(e, msgid); 508 # endif /* LOG */ 509 e->e_flags &= ~EF_LOGSENDER; 510 } 511 /* 512 ** LOGSENDER -- log sender information 513 ** 514 ** Parameters: 515 ** e -- the envelope to log 516 ** msgid -- the message id 517 ** 518 ** Returns: 519 ** none 520 */ 521 522 logsender(e, msgid) 523 register ENVELOPE *e; 524 char *msgid; 525 { 526 # ifdef LOG 527 char *name; 528 register char *sbp; 529 register char *p; 530 char hbuf[MAXNAME]; 531 char sbuf[MAXLINE]; 532 533 if (bitset(EF_RESPONSE, e->e_flags)) 534 name = "[RESPONSE]"; 535 else if ((name = macvalue('_', e)) != NULL) 536 ; 537 else if (RealHostName == NULL) 538 name = "localhost"; 539 else if (RealHostName[0] == '[') 540 name = RealHostName; 541 else 542 { 543 name = hbuf; 544 (void) sprintf(hbuf, "%.80s", RealHostName); 545 if (RealHostAddr.sa.sa_family != 0) 546 { 547 p = &hbuf[strlen(hbuf)]; 548 (void) sprintf(p, " (%s)", 549 anynet_ntoa(&RealHostAddr)); 550 } 551 } 552 553 /* some versions of syslog only take 5 printf args */ 554 # if (SYSLOG_BUFSIZE) >= 256 555 sbp = sbuf; 556 sprintf(sbp, "from=%.200s, size=%ld, class=%d, pri=%ld, nrcpts=%d", 557 e->e_from.q_paddr == NULL ? "<NONE>" : e->e_from.q_paddr, 558 e->e_msgsize, e->e_class, e->e_msgpriority, e->e_nrcpts); 559 sbp += strlen(sbp); 560 if (msgid != NULL) 561 { 562 sprintf(sbp, ", msgid=%.100s", msgid); 563 sbp += strlen(sbp); 564 } 565 if (e->e_bodytype != NULL) 566 { 567 (void) sprintf(sbp, ", bodytype=%.20s", e->e_bodytype); 568 sbp += strlen(sbp); 569 } 570 p = macvalue('r', e); 571 if (p != NULL) 572 (void) sprintf(sbp, ", proto=%.20s", p); 573 syslog(LOG_INFO, "%s: %s, relay=%s", 574 e->e_id, sbuf, name); 575 576 # else /* short syslog buffer */ 577 578 syslog(LOG_INFO, "%s: from=%s", 579 e->e_id, e->e_from.q_paddr == NULL ? "<NONE>" : 580 shortenstring(e->e_from.q_paddr, 83)); 581 syslog(LOG_INFO, "%s: size=%ld, class=%ld, pri=%ld, nrcpts=%d", 582 e->e_id, e->e_msgsize, e->e_class, 583 e->e_msgpriority, e->e_nrcpts); 584 if (msgid != NULL) 585 syslog(LOG_INFO, "%s: msgid=%s", e->e_id, msgid); 586 sbp = sbuf; 587 sprintf(sbp, "%s:", e->e_id); 588 sbp += strlen(sbp); 589 if (e->e_bodytype != NULL) 590 { 591 sprintf(sbp, " bodytype=%s,", e->e_bodytype); 592 sbp += strlen(sbp); 593 } 594 p = macvalue('r', e); 595 if (p != NULL) 596 { 597 sprintf(sbp, " proto=%s,", p); 598 sbp += strlen(sbp); 599 } 600 syslog(LOG_INFO, "%s relay=%s", sbuf, name); 601 # endif 602 # endif 603 } 604 /* 605 ** PRIENCODE -- encode external priority names into internal values. 606 ** 607 ** Parameters: 608 ** p -- priority in ascii. 609 ** 610 ** Returns: 611 ** priority as a numeric level. 612 ** 613 ** Side Effects: 614 ** none. 615 */ 616 617 priencode(p) 618 char *p; 619 { 620 register int i; 621 622 for (i = 0; i < NumPriorities; i++) 623 { 624 if (!strcasecmp(p, Priorities[i].pri_name)) 625 return (Priorities[i].pri_val); 626 } 627 628 /* unknown priority */ 629 return (0); 630 } 631 /* 632 ** CRACKADDR -- parse an address and turn it into a macro 633 ** 634 ** This doesn't actually parse the address -- it just extracts 635 ** it and replaces it with "$g". The parse is totally ad hoc 636 ** and isn't even guaranteed to leave something syntactically 637 ** identical to what it started with. However, it does leave 638 ** something semantically identical. 639 ** 640 ** This algorithm has been cleaned up to handle a wider range 641 ** of cases -- notably quoted and backslash escaped strings. 642 ** This modification makes it substantially better at preserving 643 ** the original syntax. 644 ** 645 ** Parameters: 646 ** addr -- the address to be cracked. 647 ** 648 ** Returns: 649 ** a pointer to the new version. 650 ** 651 ** Side Effects: 652 ** none. 653 ** 654 ** Warning: 655 ** The return value is saved in local storage and should 656 ** be copied if it is to be reused. 657 */ 658 659 char * 660 crackaddr(addr) 661 register char *addr; 662 { 663 register char *p; 664 register char c; 665 int cmtlev; 666 int realcmtlev; 667 int anglelev, realanglelev; 668 int copylev; 669 bool qmode; 670 bool realqmode; 671 bool skipping; 672 bool putgmac = FALSE; 673 bool quoteit = FALSE; 674 bool gotangle = FALSE; 675 register char *bp; 676 char *buflim; 677 static char buf[MAXNAME]; 678 679 if (tTd(33, 1)) 680 printf("crackaddr(%s)\n", addr); 681 682 /* strip leading spaces */ 683 while (*addr != '\0' && isascii(*addr) && isspace(*addr)) 684 addr++; 685 686 /* 687 ** Start by assuming we have no angle brackets. This will be 688 ** adjusted later if we find them. 689 */ 690 691 bp = buf; 692 buflim = &buf[sizeof buf - 5]; 693 p = addr; 694 copylev = anglelev = realanglelev = cmtlev = realcmtlev = 0; 695 qmode = realqmode = FALSE; 696 697 while ((c = *p++) != '\0') 698 { 699 /* 700 ** If the buffer is overful, go into a special "skipping" 701 ** mode that tries to keep legal syntax but doesn't actually 702 ** output things. 703 */ 704 705 skipping = bp >= buflim; 706 707 if (copylev > 0 && !skipping) 708 *bp++ = c; 709 710 /* check for backslash escapes */ 711 if (c == '\\') 712 { 713 /* arrange to quote the address */ 714 if (cmtlev <= 0 && !qmode) 715 quoteit = TRUE; 716 717 if ((c = *p++) == '\0') 718 { 719 /* too far */ 720 p--; 721 goto putg; 722 } 723 if (copylev > 0 && !skipping) 724 *bp++ = c; 725 goto putg; 726 } 727 728 /* check for quoted strings */ 729 if (c == '"' && cmtlev <= 0) 730 { 731 qmode = !qmode; 732 if (copylev > 0 && !skipping) 733 realqmode = !realqmode; 734 continue; 735 } 736 if (qmode) 737 goto putg; 738 739 /* check for comments */ 740 if (c == '(') 741 { 742 cmtlev++; 743 744 /* allow space for closing paren */ 745 if (!skipping) 746 { 747 buflim--; 748 realcmtlev++; 749 if (copylev++ <= 0) 750 { 751 *bp++ = ' '; 752 *bp++ = c; 753 } 754 } 755 } 756 if (cmtlev > 0) 757 { 758 if (c == ')') 759 { 760 cmtlev--; 761 copylev--; 762 if (!skipping) 763 { 764 realcmtlev--; 765 buflim++; 766 } 767 } 768 continue; 769 } 770 else if (c == ')') 771 { 772 /* syntax error: unmatched ) */ 773 if (copylev > 0 && !skipping) 774 bp--; 775 } 776 777 /* check for characters that may have to be quoted */ 778 if (strchr(".'@,;:\\()[]", c) != NULL) 779 { 780 /* 781 ** If these occur as the phrase part of a <> 782 ** construct, but are not inside of () or already 783 ** quoted, they will have to be quoted. Note that 784 ** now (but don't actually do the quoting). 785 */ 786 787 if (cmtlev <= 0 && !qmode) 788 quoteit = TRUE; 789 } 790 791 /* check for angle brackets */ 792 if (c == '<') 793 { 794 register char *q; 795 796 /* assume first of two angles is bogus */ 797 if (gotangle) 798 quoteit = TRUE; 799 gotangle = TRUE; 800 801 /* oops -- have to change our mind */ 802 anglelev = 1; 803 if (!skipping) 804 realanglelev = 1; 805 806 bp = buf; 807 if (quoteit) 808 { 809 *bp++ = '"'; 810 811 /* back up over the '<' and any spaces */ 812 --p; 813 while (isascii(*--p) && isspace(*p)) 814 continue; 815 p++; 816 } 817 for (q = addr; q < p; ) 818 { 819 c = *q++; 820 if (bp < buflim) 821 { 822 if (quoteit && c == '"') 823 *bp++ = '\\'; 824 *bp++ = c; 825 } 826 } 827 if (quoteit) 828 { 829 if (bp == &buf[1]) 830 bp--; 831 else 832 *bp++ = '"'; 833 while ((c = *p++) != '<') 834 { 835 if (bp < buflim) 836 *bp++ = c; 837 } 838 *bp++ = c; 839 } 840 copylev = 0; 841 putgmac = quoteit = FALSE; 842 continue; 843 } 844 845 if (c == '>') 846 { 847 if (anglelev > 0) 848 { 849 anglelev--; 850 if (!skipping) 851 { 852 realanglelev--; 853 buflim++; 854 } 855 } 856 else if (!skipping) 857 { 858 /* syntax error: unmatched > */ 859 if (copylev > 0) 860 bp--; 861 quoteit = TRUE; 862 continue; 863 } 864 if (copylev++ <= 0) 865 *bp++ = c; 866 continue; 867 } 868 869 /* must be a real address character */ 870 putg: 871 if (copylev <= 0 && !putgmac) 872 { 873 *bp++ = MACROEXPAND; 874 *bp++ = 'g'; 875 putgmac = TRUE; 876 } 877 } 878 879 /* repair any syntactic damage */ 880 if (realqmode) 881 *bp++ = '"'; 882 while (realcmtlev-- > 0) 883 *bp++ = ')'; 884 while (realanglelev-- > 0) 885 *bp++ = '>'; 886 *bp++ = '\0'; 887 888 if (tTd(33, 1)) 889 printf("crackaddr=>`%s'\n", buf); 890 891 return (buf); 892 } 893 /* 894 ** PUTHEADER -- put the header part of a message from the in-core copy 895 ** 896 ** Parameters: 897 ** mci -- the connection information. 898 ** h -- the header to put. 899 ** e -- envelope to use. 900 ** 901 ** Returns: 902 ** none. 903 ** 904 ** Side Effects: 905 ** none. 906 */ 907 908 /* 909 * Macro for fast max (not available in e.g. DG/UX, 386/ix). 910 */ 911 #ifndef MAX 912 # define MAX(a,b) (((a)>(b))?(a):(b)) 913 #endif 914 915 putheader(mci, h, e) 916 register MCI *mci; 917 register HDR *h; 918 register ENVELOPE *e; 919 { 920 char buf[MAX(MAXLINE,BUFSIZ)]; 921 char obuf[MAXLINE]; 922 923 if (tTd(34, 1)) 924 printf("--- putheader, mailer = %s ---\n", 925 mci->mci_mailer->m_name); 926 927 mci->mci_flags |= MCIF_INHEADER; 928 for (; h != NULL; h = h->h_link) 929 { 930 register char *p; 931 extern bool bitintersect(); 932 933 if (tTd(34, 11)) 934 { 935 printf(" %s: ", h->h_field); 936 xputs(h->h_value); 937 } 938 939 if (bitset(H_CHECK|H_ACHECK, h->h_flags) && 940 !bitintersect(h->h_mflags, mci->mci_mailer->m_flags)) 941 { 942 if (tTd(34, 11)) 943 printf(" (skipped)\n"); 944 continue; 945 } 946 947 /* handle Resent-... headers specially */ 948 if (bitset(H_RESENT, h->h_flags) && !bitset(EF_RESENT, e->e_flags)) 949 { 950 if (tTd(34, 11)) 951 printf(" (skipped (resent))\n"); 952 continue; 953 } 954 955 /* suppress return receipts if requested */ 956 if (bitset(H_RECEIPTTO, h->h_flags) && 957 bitset(EF_NORECEIPT, e->e_flags)) 958 { 959 if (tTd(34, 11)) 960 printf(" (skipped (receipt))\n"); 961 continue; 962 } 963 964 /* suppress Content-Transfer-Encoding: if we are MIMEing */ 965 if (bitset(H_CTE, h->h_flags) && 966 bitset(MCIF_CVT8TO7, mci->mci_flags)) 967 { 968 if (tTd(34, 11)) 969 printf(" (skipped (content-transfer-encoding))\n"); 970 continue; 971 } 972 973 /* macro expand value if generated internally */ 974 p = h->h_value; 975 if (bitset(H_DEFAULT, h->h_flags)) 976 { 977 expand(p, buf, &buf[sizeof buf], e); 978 p = buf; 979 if (p == NULL || *p == '\0') 980 { 981 if (tTd(34, 11)) 982 printf(" (skipped -- null value)\n"); 983 continue; 984 } 985 } 986 987 if (tTd(34, 11)) 988 printf("\n"); 989 990 if (bitset(H_FROM|H_RCPT, h->h_flags)) 991 { 992 /* address field */ 993 bool oldstyle = bitset(EF_OLDSTYLE, e->e_flags); 994 995 if (bitset(H_FROM, h->h_flags)) 996 oldstyle = FALSE; 997 commaize(h, p, oldstyle, mci, e); 998 } 999 else 1000 { 1001 /* vanilla header line */ 1002 register char *nlp; 1003 1004 (void) sprintf(obuf, "%s: ", h->h_field); 1005 while ((nlp = strchr(p, '\n')) != NULL) 1006 { 1007 *nlp = '\0'; 1008 (void) strcat(obuf, p); 1009 *nlp = '\n'; 1010 putline(obuf, mci); 1011 p = ++nlp; 1012 obuf[0] = '\0'; 1013 } 1014 (void) strcat(obuf, p); 1015 putline(obuf, mci); 1016 } 1017 } 1018 } 1019 /* 1020 ** COMMAIZE -- output a header field, making a comma-translated list. 1021 ** 1022 ** Parameters: 1023 ** h -- the header field to output. 1024 ** p -- the value to put in it. 1025 ** oldstyle -- TRUE if this is an old style header. 1026 ** mci -- the connection information. 1027 ** e -- the envelope containing the message. 1028 ** 1029 ** Returns: 1030 ** none. 1031 ** 1032 ** Side Effects: 1033 ** outputs "p" to file "fp". 1034 */ 1035 1036 void 1037 commaize(h, p, oldstyle, mci, e) 1038 register HDR *h; 1039 register char *p; 1040 bool oldstyle; 1041 register MCI *mci; 1042 register ENVELOPE *e; 1043 { 1044 register char *obp; 1045 int opos; 1046 int omax; 1047 bool firstone = TRUE; 1048 char obuf[MAXLINE + 3]; 1049 1050 /* 1051 ** Output the address list translated by the 1052 ** mailer and with commas. 1053 */ 1054 1055 if (tTd(14, 2)) 1056 printf("commaize(%s: %s)\n", h->h_field, p); 1057 1058 obp = obuf; 1059 (void) sprintf(obp, "%s: ", h->h_field); 1060 opos = strlen(h->h_field) + 2; 1061 obp += opos; 1062 omax = mci->mci_mailer->m_linelimit - 2; 1063 if (omax < 0 || omax > 78) 1064 omax = 78; 1065 1066 /* 1067 ** Run through the list of values. 1068 */ 1069 1070 while (*p != '\0') 1071 { 1072 register char *name; 1073 register int c; 1074 char savechar; 1075 int flags; 1076 auto int stat; 1077 1078 /* 1079 ** Find the end of the name. New style names 1080 ** end with a comma, old style names end with 1081 ** a space character. However, spaces do not 1082 ** necessarily delimit an old-style name -- at 1083 ** signs mean keep going. 1084 */ 1085 1086 /* find end of name */ 1087 while ((isascii(*p) && isspace(*p)) || *p == ',') 1088 p++; 1089 name = p; 1090 for (;;) 1091 { 1092 auto char *oldp; 1093 char pvpbuf[PSBUFSIZE]; 1094 1095 (void) prescan(p, oldstyle ? ' ' : ',', pvpbuf, 1096 sizeof pvpbuf, &oldp); 1097 p = oldp; 1098 1099 /* look to see if we have an at sign */ 1100 while (*p != '\0' && isascii(*p) && isspace(*p)) 1101 p++; 1102 1103 if (*p != '@') 1104 { 1105 p = oldp; 1106 break; 1107 } 1108 p += *p == '@' ? 1 : 2; 1109 while (*p != '\0' && isascii(*p) && isspace(*p)) 1110 p++; 1111 } 1112 /* at the end of one complete name */ 1113 1114 /* strip off trailing white space */ 1115 while (p >= name && 1116 ((isascii(*p) && isspace(*p)) || *p == ',' || *p == '\0')) 1117 p--; 1118 if (++p == name) 1119 continue; 1120 savechar = *p; 1121 *p = '\0'; 1122 1123 /* translate the name to be relative */ 1124 flags = RF_HEADERADDR|RF_ADDDOMAIN; 1125 if (bitset(H_FROM, h->h_flags)) 1126 flags |= RF_SENDERADDR; 1127 stat = EX_OK; 1128 name = remotename(name, mci->mci_mailer, flags, &stat, e); 1129 if (*name == '\0') 1130 { 1131 *p = savechar; 1132 continue; 1133 } 1134 1135 /* output the name with nice formatting */ 1136 opos += strlen(name); 1137 if (!firstone) 1138 opos += 2; 1139 if (opos > omax && !firstone) 1140 { 1141 (void) strcpy(obp, ",\n"); 1142 putline(obuf, mci); 1143 obp = obuf; 1144 (void) strcpy(obp, " "); 1145 opos = strlen(obp); 1146 obp += opos; 1147 opos += strlen(name); 1148 } 1149 else if (!firstone) 1150 { 1151 (void) strcpy(obp, ", "); 1152 obp += 2; 1153 } 1154 1155 while ((c = *name++) != '\0' && obp < &obuf[MAXLINE]) 1156 *obp++ = c; 1157 firstone = FALSE; 1158 *p = savechar; 1159 } 1160 (void) strcpy(obp, "\n"); 1161 putline(obuf, mci); 1162 } 1163 /* 1164 ** COPYHEADER -- copy header list 1165 ** 1166 ** This routine is the equivalent of newstr for header lists 1167 ** 1168 ** Parameters: 1169 ** header -- list of header structures to copy. 1170 ** 1171 ** Returns: 1172 ** a copy of 'header'. 1173 ** 1174 ** Side Effects: 1175 ** none. 1176 */ 1177 1178 HDR * 1179 copyheader(header) 1180 register HDR *header; 1181 { 1182 register HDR *newhdr; 1183 HDR *ret; 1184 register HDR **tail = &ret; 1185 1186 while (header != NULL) 1187 { 1188 newhdr = (HDR *) xalloc(sizeof(HDR)); 1189 STRUCTCOPY(*header, *newhdr); 1190 *tail = newhdr; 1191 tail = &newhdr->h_link; 1192 header = header->h_link; 1193 } 1194 *tail = NULL; 1195 1196 return ret; 1197 } 1198