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 8.30 (Berkeley) 02/25/94"; 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 char *name; 508 register char *sbp; 509 register char *p; 510 char hbuf[MAXNAME]; 511 char sbuf[MAXLINE]; 512 513 if (bitset(EF_RESPONSE, e->e_flags)) 514 name = "[RESPONSE]"; 515 else if ((name = macvalue('_', e)) != NULL) 516 ; 517 else if (RealHostName == NULL) 518 name = "localhost"; 519 else if (RealHostName[0] == '[') 520 name = RealHostName; 521 else 522 { 523 name = hbuf; 524 (void) sprintf(hbuf, "%.80s", RealHostName); 525 if (RealHostAddr.sa.sa_family != 0) 526 { 527 p = &hbuf[strlen(hbuf)]; 528 (void) sprintf(p, " (%s)", 529 anynet_ntoa(&RealHostAddr)); 530 } 531 } 532 533 /* some versions of syslog only take 5 printf args */ 534 # if (SYSLOG_BUFSIZE) >= 256 535 sbp = sbuf; 536 sprintf(sbp, "from=%.200s, size=%ld, class=%d, pri=%ld, nrcpts=%d", 537 e->e_from.q_paddr, e->e_msgsize, e->e_class, 538 e->e_msgpriority, e->e_nrcpts); 539 sbp += strlen(sbp); 540 if (msgid != NULL) 541 { 542 sprintf(sbp, ", msgid=%.100s", msgid); 543 sbp += strlen(sbp); 544 } 545 if (e->e_bodytype != NULL) 546 { 547 (void) sprintf(sbp, ", bodytype=%.20s", e->e_bodytype); 548 sbp += strlen(sbp); 549 } 550 p = macvalue('r', e); 551 if (p != NULL) 552 (void) sprintf(sbp, ", proto=%.20s", p); 553 syslog(LOG_INFO, "%s: %s, relay=%s", 554 e->e_id, sbuf, name); 555 556 # else /* short syslog buffer */ 557 558 syslog(LOG_INFO, "%s: from=%s", 559 e->e_id, shortenstring(e->e_from.q_paddr, 83)); 560 syslog(LOG_INFO, "%s: size=%ld, class=%ld, pri=%ld, nrcpts=%d", 561 e->e_id, e->e_msgsize, e->e_class, 562 e->e_msgpriority, e->e_nrcpts); 563 if (msgid != NULL) 564 syslog(LOG_INFO, "%s: msgid=%s", e->e_id, msgid); 565 sbp = sbuf; 566 sprintf(sbp, "%s:", e->e_id); 567 sbp += strlen(sbp); 568 if (e->e_bodytype != NULL) 569 { 570 sprintf(sbp, " bodytype=%s,", e->e_bodytype); 571 sbp += strlen(sbp); 572 } 573 p = macvalue('r', e); 574 if (p != NULL) 575 { 576 sprintf(sbp, " proto=%s,", p); 577 sbp += strlen(sbp); 578 } 579 syslog(LOG_INFO, "%s relay=%s", sbuf, name); 580 # endif 581 } 582 /* 583 ** PRIENCODE -- encode external priority names into internal values. 584 ** 585 ** Parameters: 586 ** p -- priority in ascii. 587 ** 588 ** Returns: 589 ** priority as a numeric level. 590 ** 591 ** Side Effects: 592 ** none. 593 */ 594 595 priencode(p) 596 char *p; 597 { 598 register int i; 599 600 for (i = 0; i < NumPriorities; i++) 601 { 602 if (!strcasecmp(p, Priorities[i].pri_name)) 603 return (Priorities[i].pri_val); 604 } 605 606 /* unknown priority */ 607 return (0); 608 } 609 /* 610 ** CRACKADDR -- parse an address and turn it into a macro 611 ** 612 ** This doesn't actually parse the address -- it just extracts 613 ** it and replaces it with "$g". The parse is totally ad hoc 614 ** and isn't even guaranteed to leave something syntactically 615 ** identical to what it started with. However, it does leave 616 ** something semantically identical. 617 ** 618 ** This algorithm has been cleaned up to handle a wider range 619 ** of cases -- notably quoted and backslash escaped strings. 620 ** This modification makes it substantially better at preserving 621 ** the original syntax. 622 ** 623 ** Parameters: 624 ** addr -- the address to be cracked. 625 ** 626 ** Returns: 627 ** a pointer to the new version. 628 ** 629 ** Side Effects: 630 ** none. 631 ** 632 ** Warning: 633 ** The return value is saved in local storage and should 634 ** be copied if it is to be reused. 635 */ 636 637 char * 638 crackaddr(addr) 639 register char *addr; 640 { 641 register char *p; 642 register char c; 643 int cmtlev; 644 int realcmtlev; 645 int anglelev, realanglelev; 646 int copylev; 647 bool qmode; 648 bool realqmode; 649 bool skipping; 650 bool putgmac = FALSE; 651 bool quoteit = FALSE; 652 bool gotangle = FALSE; 653 register char *bp; 654 char *buflim; 655 static char buf[MAXNAME]; 656 657 if (tTd(33, 1)) 658 printf("crackaddr(%s)\n", addr); 659 660 /* strip leading spaces */ 661 while (*addr != '\0' && isascii(*addr) && isspace(*addr)) 662 addr++; 663 664 /* 665 ** Start by assuming we have no angle brackets. This will be 666 ** adjusted later if we find them. 667 */ 668 669 bp = buf; 670 buflim = &buf[sizeof buf - 5]; 671 p = addr; 672 copylev = anglelev = realanglelev = cmtlev = realcmtlev = 0; 673 qmode = realqmode = FALSE; 674 675 while ((c = *p++) != '\0') 676 { 677 /* 678 ** If the buffer is overful, go into a special "skipping" 679 ** mode that tries to keep legal syntax but doesn't actually 680 ** output things. 681 */ 682 683 skipping = bp >= buflim; 684 685 if (copylev > 0 && !skipping) 686 *bp++ = c; 687 688 /* check for backslash escapes */ 689 if (c == '\\') 690 { 691 /* arrange to quote the address */ 692 if (cmtlev <= 0 && !qmode) 693 quoteit = TRUE; 694 695 if ((c = *p++) == '\0') 696 { 697 /* too far */ 698 p--; 699 goto putg; 700 } 701 if (copylev > 0 && !skipping) 702 *bp++ = c; 703 goto putg; 704 } 705 706 /* check for quoted strings */ 707 if (c == '"' && cmtlev <= 0) 708 { 709 qmode = !qmode; 710 if (copylev > 0 && !skipping) 711 realqmode = !realqmode; 712 continue; 713 } 714 if (qmode) 715 goto putg; 716 717 /* check for comments */ 718 if (c == '(') 719 { 720 cmtlev++; 721 722 /* allow space for closing paren */ 723 if (!skipping) 724 { 725 buflim--; 726 realcmtlev++; 727 if (copylev++ <= 0) 728 { 729 *bp++ = ' '; 730 *bp++ = c; 731 } 732 } 733 } 734 if (cmtlev > 0) 735 { 736 if (c == ')') 737 { 738 cmtlev--; 739 copylev--; 740 if (!skipping) 741 { 742 realcmtlev--; 743 buflim++; 744 } 745 } 746 continue; 747 } 748 else if (c == ')') 749 { 750 /* syntax error: unmatched ) */ 751 if (copylev > 0 && !skipping) 752 bp--; 753 } 754 755 /* check for characters that may have to be quoted */ 756 if (strchr(".'@,;:\\()[]", c) != NULL) 757 { 758 /* 759 ** If these occur as the phrase part of a <> 760 ** construct, but are not inside of () or already 761 ** quoted, they will have to be quoted. Note that 762 ** now (but don't actually do the quoting). 763 */ 764 765 if (cmtlev <= 0 && !qmode) 766 quoteit = TRUE; 767 } 768 769 /* check for angle brackets */ 770 if (c == '<') 771 { 772 register char *q; 773 774 /* assume first of two angles is bogus */ 775 if (gotangle) 776 quoteit = TRUE; 777 gotangle = TRUE; 778 779 /* oops -- have to change our mind */ 780 anglelev = 1; 781 if (!skipping) 782 realanglelev = 1; 783 784 bp = buf; 785 if (quoteit) 786 { 787 *bp++ = '"'; 788 789 /* back up over the '<' and any spaces */ 790 --p; 791 while (isascii(*--p) && isspace(*p)) 792 continue; 793 p++; 794 } 795 for (q = addr; q < p; ) 796 { 797 c = *q++; 798 if (bp < buflim) 799 { 800 if (quoteit && c == '"') 801 *bp++ = '\\'; 802 *bp++ = c; 803 } 804 } 805 if (quoteit) 806 { 807 if (bp == &buf[1]) 808 bp--; 809 else 810 *bp++ = '"'; 811 while ((c = *p++) != '<') 812 { 813 if (bp < buflim) 814 *bp++ = c; 815 } 816 *bp++ = c; 817 } 818 copylev = 0; 819 putgmac = quoteit = FALSE; 820 continue; 821 } 822 823 if (c == '>') 824 { 825 if (anglelev > 0) 826 { 827 anglelev--; 828 if (!skipping) 829 { 830 realanglelev--; 831 buflim++; 832 } 833 } 834 else if (!skipping) 835 { 836 /* syntax error: unmatched > */ 837 if (copylev > 0) 838 bp--; 839 quoteit = TRUE; 840 continue; 841 } 842 if (copylev++ <= 0) 843 *bp++ = c; 844 continue; 845 } 846 847 /* must be a real address character */ 848 putg: 849 if (copylev <= 0 && !putgmac) 850 { 851 *bp++ = MACROEXPAND; 852 *bp++ = 'g'; 853 putgmac = TRUE; 854 } 855 } 856 857 /* repair any syntactic damage */ 858 if (realqmode) 859 *bp++ = '"'; 860 while (realcmtlev-- > 0) 861 *bp++ = ')'; 862 while (realanglelev-- > 0) 863 *bp++ = '>'; 864 *bp++ = '\0'; 865 866 if (tTd(33, 1)) 867 printf("crackaddr=>`%s'\n", buf); 868 869 return (buf); 870 } 871 /* 872 ** PUTHEADER -- put the header part of a message from the in-core copy 873 ** 874 ** Parameters: 875 ** mci -- the connection information. 876 ** e -- envelope to use. 877 ** 878 ** Returns: 879 ** none. 880 ** 881 ** Side Effects: 882 ** none. 883 */ 884 885 /* 886 * Macro for fast max (not available in e.g. DG/UX, 386/ix). 887 */ 888 #ifndef MAX 889 # define MAX(a,b) (((a)>(b))?(a):(b)) 890 #endif 891 892 putheader(mci, e) 893 register MCI *mci; 894 register ENVELOPE *e; 895 { 896 char buf[MAX(MAXLINE,BUFSIZ)]; 897 register HDR *h; 898 char obuf[MAXLINE]; 899 900 if (tTd(34, 1)) 901 printf("--- putheader, mailer = %s ---\n", 902 mci->mci_mailer->m_name); 903 904 for (h = e->e_header; h != NULL; h = h->h_link) 905 { 906 register char *p; 907 extern bool bitintersect(); 908 909 if (tTd(34, 11)) 910 { 911 printf(" %s: ", h->h_field); 912 xputs(h->h_value); 913 } 914 915 if (bitset(H_CHECK|H_ACHECK, h->h_flags) && 916 !bitintersect(h->h_mflags, mci->mci_mailer->m_flags)) 917 { 918 if (tTd(34, 11)) 919 printf(" (skipped)\n"); 920 continue; 921 } 922 923 /* handle Resent-... headers specially */ 924 if (bitset(H_RESENT, h->h_flags) && !bitset(EF_RESENT, e->e_flags)) 925 { 926 if (tTd(34, 11)) 927 printf(" (skipped (resent))\n"); 928 continue; 929 } 930 931 /* macro expand value if generated internally */ 932 p = h->h_value; 933 if (bitset(H_DEFAULT, h->h_flags)) 934 { 935 expand(p, buf, &buf[sizeof buf], e); 936 p = buf; 937 if (p == NULL || *p == '\0') 938 { 939 if (tTd(34, 11)) 940 printf(" (skipped -- null value)\n"); 941 continue; 942 } 943 } 944 945 if (tTd(34, 11)) 946 printf("\n"); 947 948 if (bitset(H_FROM|H_RCPT, h->h_flags)) 949 { 950 /* address field */ 951 bool oldstyle = bitset(EF_OLDSTYLE, e->e_flags); 952 953 if (bitset(H_FROM, h->h_flags)) 954 oldstyle = FALSE; 955 commaize(h, p, oldstyle, mci, e); 956 } 957 else 958 { 959 /* vanilla header line */ 960 register char *nlp; 961 962 (void) sprintf(obuf, "%s: ", h->h_field); 963 while ((nlp = strchr(p, '\n')) != NULL) 964 { 965 *nlp = '\0'; 966 (void) strcat(obuf, p); 967 *nlp = '\n'; 968 putline(obuf, mci); 969 p = ++nlp; 970 obuf[0] = '\0'; 971 } 972 (void) strcat(obuf, p); 973 putline(obuf, mci); 974 } 975 } 976 } 977 /* 978 ** COMMAIZE -- output a header field, making a comma-translated list. 979 ** 980 ** Parameters: 981 ** h -- the header field to output. 982 ** p -- the value to put in it. 983 ** oldstyle -- TRUE if this is an old style header. 984 ** mci -- the connection information. 985 ** e -- the envelope containing the message. 986 ** 987 ** Returns: 988 ** none. 989 ** 990 ** Side Effects: 991 ** outputs "p" to file "fp". 992 */ 993 994 void 995 commaize(h, p, oldstyle, mci, e) 996 register HDR *h; 997 register char *p; 998 bool oldstyle; 999 register MCI *mci; 1000 register ENVELOPE *e; 1001 { 1002 register char *obp; 1003 int opos; 1004 int omax; 1005 bool firstone = TRUE; 1006 char obuf[MAXLINE + 3]; 1007 1008 /* 1009 ** Output the address list translated by the 1010 ** mailer and with commas. 1011 */ 1012 1013 if (tTd(14, 2)) 1014 printf("commaize(%s: %s)\n", h->h_field, p); 1015 1016 obp = obuf; 1017 (void) sprintf(obp, "%s: ", h->h_field); 1018 opos = strlen(h->h_field) + 2; 1019 obp += opos; 1020 omax = mci->mci_mailer->m_linelimit - 2; 1021 if (omax < 0 || omax > 78) 1022 omax = 78; 1023 1024 /* 1025 ** Run through the list of values. 1026 */ 1027 1028 while (*p != '\0') 1029 { 1030 register char *name; 1031 register int c; 1032 char savechar; 1033 int flags; 1034 auto int stat; 1035 1036 /* 1037 ** Find the end of the name. New style names 1038 ** end with a comma, old style names end with 1039 ** a space character. However, spaces do not 1040 ** necessarily delimit an old-style name -- at 1041 ** signs mean keep going. 1042 */ 1043 1044 /* find end of name */ 1045 while ((isascii(*p) && isspace(*p)) || *p == ',') 1046 p++; 1047 name = p; 1048 for (;;) 1049 { 1050 auto char *oldp; 1051 char pvpbuf[PSBUFSIZE]; 1052 1053 (void) prescan(p, oldstyle ? ' ' : ',', pvpbuf, 1054 sizeof pvpbuf, &oldp); 1055 p = oldp; 1056 1057 /* look to see if we have an at sign */ 1058 while (*p != '\0' && isascii(*p) && isspace(*p)) 1059 p++; 1060 1061 if (*p != '@') 1062 { 1063 p = oldp; 1064 break; 1065 } 1066 p += *p == '@' ? 1 : 2; 1067 while (*p != '\0' && isascii(*p) && isspace(*p)) 1068 p++; 1069 } 1070 /* at the end of one complete name */ 1071 1072 /* strip off trailing white space */ 1073 while (p >= name && 1074 ((isascii(*p) && isspace(*p)) || *p == ',' || *p == '\0')) 1075 p--; 1076 if (++p == name) 1077 continue; 1078 savechar = *p; 1079 *p = '\0'; 1080 1081 /* translate the name to be relative */ 1082 flags = RF_HEADERADDR|RF_ADDDOMAIN; 1083 if (bitset(H_FROM, h->h_flags)) 1084 flags |= RF_SENDERADDR; 1085 stat = EX_OK; 1086 name = remotename(name, mci->mci_mailer, flags, &stat, e); 1087 if (*name == '\0') 1088 { 1089 *p = savechar; 1090 continue; 1091 } 1092 1093 /* output the name with nice formatting */ 1094 opos += strlen(name); 1095 if (!firstone) 1096 opos += 2; 1097 if (opos > omax && !firstone) 1098 { 1099 (void) strcpy(obp, ",\n"); 1100 putline(obuf, mci); 1101 obp = obuf; 1102 (void) strcpy(obp, " "); 1103 opos = strlen(obp); 1104 obp += opos; 1105 opos += strlen(name); 1106 } 1107 else if (!firstone) 1108 { 1109 (void) strcpy(obp, ", "); 1110 obp += 2; 1111 } 1112 1113 while ((c = *name++) != '\0' && obp < &obuf[MAXLINE]) 1114 *obp++ = c; 1115 firstone = FALSE; 1116 *p = savechar; 1117 } 1118 (void) strcpy(obp, "\n"); 1119 putline(obuf, mci); 1120 } 1121 /* 1122 ** COPYHEADER -- copy header list 1123 ** 1124 ** This routine is the equivalent of newstr for header lists 1125 ** 1126 ** Parameters: 1127 ** header -- list of header structures to copy. 1128 ** 1129 ** Returns: 1130 ** a copy of 'header'. 1131 ** 1132 ** Side Effects: 1133 ** none. 1134 */ 1135 1136 HDR * 1137 copyheader(header) 1138 register HDR *header; 1139 { 1140 register HDR *newhdr; 1141 HDR *ret; 1142 register HDR **tail = &ret; 1143 1144 while (header != NULL) 1145 { 1146 newhdr = (HDR *) xalloc(sizeof(HDR)); 1147 STRUCTCOPY(*header, *newhdr); 1148 *tail = newhdr; 1149 tail = &newhdr->h_link; 1150 header = header->h_link; 1151 } 1152 *tail = NULL; 1153 1154 return ret; 1155 } 1156