1 /* 2 * Copyright (c) 1983, 1995 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 8.61 (Berkeley) 05/05/95"; 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 ** hdrp -- a pointer to the place to save the header. 25 ** e -- the envelope including this header. 26 ** 27 ** Returns: 28 ** flags for this header. 29 ** 30 ** Side Effects: 31 ** The header is saved on the header list. 32 ** Contents of 'line' are destroyed. 33 */ 34 35 chompheader(line, def, hdrp, e) 36 char *line; 37 bool def; 38 HDR **hdrp; 39 register ENVELOPE *e; 40 { 41 register char *p; 42 register HDR *h; 43 HDR **hp; 44 char *fname; 45 char *fvalue; 46 struct hdrinfo *hi; 47 bool cond = FALSE; 48 bool headeronly; 49 BITMAP mopts; 50 char buf[MAXNAME + 1]; 51 52 if (tTd(31, 6)) 53 { 54 printf("chompheader: "); 55 xputs(line); 56 printf("\n"); 57 } 58 59 headeronly = hdrp != NULL; 60 if (!headeronly) 61 hdrp = &e->e_header; 62 63 /* strip off options */ 64 clrbitmap(mopts); 65 p = line; 66 if (*p == '?') 67 { 68 /* have some */ 69 register char *q = strchr(p + 1, *p); 70 71 if (q != NULL) 72 { 73 *q++ = '\0'; 74 while (*++p != '\0') 75 setbitn(*p, mopts); 76 p = q; 77 } 78 else 79 syserr("553 header syntax error, line \"%s\"", line); 80 cond = TRUE; 81 } 82 83 /* find canonical name */ 84 fname = p; 85 while (isascii(*p) && isgraph(*p) && *p != ':') 86 p++; 87 fvalue = p; 88 while (isascii(*p) && isspace(*p)) 89 p++; 90 if (*p++ != ':' || fname == fvalue) 91 { 92 syserr("553 header syntax error, line \"%s\"", line); 93 return (0); 94 } 95 *fvalue = '\0'; 96 fvalue = p; 97 98 /* strip field value on front */ 99 if (*fvalue == ' ') 100 fvalue++; 101 102 /* see if it is a known type */ 103 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 104 { 105 if (strcasecmp(hi->hi_field, fname) == 0) 106 break; 107 } 108 109 if (tTd(31, 9)) 110 { 111 if (hi->hi_field == NULL) 112 printf("no header match\n"); 113 else 114 printf("header match, hi_flags=%x\n", hi->hi_flags); 115 } 116 117 /* see if this is a resent message */ 118 if (!def && !headeronly && bitset(H_RESENT, hi->hi_flags)) 119 e->e_flags |= EF_RESENT; 120 121 /* if this is an Errors-To: header keep track of it now */ 122 if (UseErrorsTo && !def && !headeronly && 123 bitset(H_ERRORSTO, hi->hi_flags)) 124 (void) sendtolist(fvalue, NULLADDR, &e->e_errorqueue, 0, e); 125 126 /* if this means "end of header" quit now */ 127 if (bitset(H_EOH, hi->hi_flags)) 128 return (hi->hi_flags); 129 130 /* 131 ** Drop explicit From: if same as what we would generate. 132 ** This is to make MH (which doesn't always give a full name) 133 ** insert the full name information in all circumstances. 134 */ 135 136 p = "resent-from"; 137 if (!bitset(EF_RESENT, e->e_flags)) 138 p += 7; 139 if (!def && !headeronly && !bitset(EF_QUEUERUN, e->e_flags) && 140 strcasecmp(fname, p) == 0) 141 { 142 if (tTd(31, 2)) 143 { 144 printf("comparing header from (%s) against default (%s or %s)\n", 145 fvalue, e->e_from.q_paddr, e->e_from.q_user); 146 } 147 if (e->e_from.q_paddr != NULL && 148 (strcmp(fvalue, e->e_from.q_paddr) == 0 || 149 strcmp(fvalue, e->e_from.q_user) == 0)) 150 return (hi->hi_flags); 151 #ifdef MAYBENEXTRELEASE /* XXX UNTESTED XXX UNTESTED XXX UNTESTED XXX */ 152 #ifdef USERDB 153 else 154 { 155 auto ADDRESS a; 156 char *fancy; 157 bool oldSuprErrs = SuprErrs; 158 extern char *crackaddr(); 159 extern char *udbsender(); 160 161 /* 162 ** Try doing USERDB rewriting even on fully commented 163 ** names; this saves the "comment" information (such 164 ** as full name) and rewrites the electronic part. 165 ** 166 ** XXX This code doesn't belong here -- parsing should 167 ** XXX not be done during collect() phase because 168 ** XXX error messages can confuse the SMTP phase. 169 ** XXX Setting SuprErrs is a crude hack around this 170 ** XXX problem. 171 */ 172 173 if (OpMode == MD_SMTP || OpMode == MD_ARPAFTP) 174 SuprErrs = TRUE; 175 fancy = crackaddr(fvalue); 176 if (parseaddr(fvalue, &a, RF_COPYNONE, '\0', NULL, e) != NULL && 177 bitnset(M_CHECKUDB, a.q_mailer->m_flags) && 178 (p = udbsender(a.q_user)) != NULL) 179 { 180 char *oldg = macvalue('g', e); 181 182 define('g', p, e); 183 expand(fancy, buf, sizeof buf, e); 184 define('g', oldg, e); 185 fvalue = buf; 186 } 187 SuprErrs = oldSuprErrs; 188 } 189 #endif 190 #endif 191 } 192 193 /* delete default value for this header */ 194 for (hp = hdrp; (h = *hp) != NULL; hp = &h->h_link) 195 { 196 if (strcasecmp(fname, h->h_field) == 0 && 197 bitset(H_DEFAULT, h->h_flags) && 198 !bitset(H_FORCE, h->h_flags)) 199 h->h_value = NULL; 200 } 201 202 /* create a new node */ 203 h = (HDR *) xalloc(sizeof *h); 204 h->h_field = newstr(fname); 205 h->h_value = newstr(fvalue); 206 h->h_link = NULL; 207 bcopy((char *) mopts, (char *) h->h_mflags, sizeof mopts); 208 *hp = h; 209 h->h_flags = hi->hi_flags; 210 if (def) 211 h->h_flags |= H_DEFAULT; 212 if (cond) 213 h->h_flags |= H_CHECK; 214 215 /* hack to see if this is a new format message */ 216 if (!def && !headeronly && bitset(H_RCPT|H_FROM, h->h_flags) && 217 (strchr(fvalue, ',') != NULL || strchr(fvalue, '(') != NULL || 218 strchr(fvalue, '<') != NULL || strchr(fvalue, ';') != NULL)) 219 { 220 e->e_flags &= ~EF_OLDSTYLE; 221 } 222 223 return (h->h_flags); 224 } 225 /* 226 ** ADDHEADER -- add a header entry to the end of the queue. 227 ** 228 ** This bypasses the special checking of chompheader. 229 ** 230 ** Parameters: 231 ** field -- the name of the header field. 232 ** value -- the value of the field. 233 ** hp -- an indirect pointer to the header structure list. 234 ** 235 ** Returns: 236 ** none. 237 ** 238 ** Side Effects: 239 ** adds the field on the list of headers for this envelope. 240 */ 241 242 addheader(field, value, hdrlist) 243 char *field; 244 char *value; 245 HDR **hdrlist; 246 { 247 register HDR *h; 248 register struct hdrinfo *hi; 249 HDR **hp; 250 251 /* find info struct */ 252 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 253 { 254 if (strcasecmp(field, hi->hi_field) == 0) 255 break; 256 } 257 258 /* find current place in list -- keep back pointer? */ 259 for (hp = hdrlist; (h = *hp) != NULL; hp = &h->h_link) 260 { 261 if (strcasecmp(field, h->h_field) == 0) 262 break; 263 } 264 265 /* allocate space for new header */ 266 h = (HDR *) xalloc(sizeof *h); 267 h->h_field = field; 268 h->h_value = newstr(value); 269 h->h_link = *hp; 270 h->h_flags = hi->hi_flags | H_DEFAULT; 271 clrbitmap(h->h_mflags); 272 *hp = h; 273 } 274 /* 275 ** HVALUE -- return value of a header. 276 ** 277 ** Only "real" fields (i.e., ones that have not been supplied 278 ** as a default) are used. 279 ** 280 ** Parameters: 281 ** field -- the field name. 282 ** header -- the header list. 283 ** 284 ** Returns: 285 ** pointer to the value part. 286 ** NULL if not found. 287 ** 288 ** Side Effects: 289 ** none. 290 */ 291 292 char * 293 hvalue(field, header) 294 char *field; 295 HDR *header; 296 { 297 register HDR *h; 298 299 for (h = header; h != NULL; h = h->h_link) 300 { 301 if (!bitset(H_DEFAULT, h->h_flags) && 302 strcasecmp(h->h_field, field) == 0) 303 return (h->h_value); 304 } 305 return (NULL); 306 } 307 /* 308 ** ISHEADER -- predicate telling if argument is a header. 309 ** 310 ** A line is a header if it has a single word followed by 311 ** optional white space followed by a colon. 312 ** 313 ** Header fields beginning with two dashes, although technically 314 ** permitted by RFC822, are automatically rejected in order 315 ** to make MIME work out. Without this we could have a technically 316 ** legal header such as ``--"foo:bar"'' that would also be a legal 317 ** MIME separator. 318 ** 319 ** Parameters: 320 ** h -- string to check for possible headerness. 321 ** 322 ** Returns: 323 ** TRUE if h is a header. 324 ** FALSE otherwise. 325 ** 326 ** Side Effects: 327 ** none. 328 */ 329 330 bool 331 isheader(h) 332 char *h; 333 { 334 register char *s = h; 335 336 if (s[0] == '-' && s[1] == '-') 337 return FALSE; 338 339 while (*s > ' ' && *s != ':' && *s != '\0') 340 s++; 341 342 if (h == s) 343 return FALSE; 344 345 /* following technically violates RFC822 */ 346 while (isascii(*s) && isspace(*s)) 347 s++; 348 349 return (*s == ':'); 350 } 351 /* 352 ** EATHEADER -- run through the stored header and extract info. 353 ** 354 ** Parameters: 355 ** e -- the envelope to process. 356 ** full -- if set, do full processing (e.g., compute 357 ** message priority). 358 ** 359 ** Returns: 360 ** none. 361 ** 362 ** Side Effects: 363 ** Sets a bunch of global variables from information 364 ** in the collected header. 365 ** Aborts the message if the hop count is exceeded. 366 */ 367 368 eatheader(e, full) 369 register ENVELOPE *e; 370 bool full; 371 { 372 register HDR *h; 373 register char *p; 374 int hopcnt = 0; 375 char *msgid; 376 char buf[MAXLINE]; 377 378 /* 379 ** Set up macros for possible expansion in headers. 380 */ 381 382 define('f', e->e_sender, e); 383 define('g', e->e_sender, e); 384 if (e->e_origrcpt != NULL && *e->e_origrcpt != '\0') 385 define('u', e->e_origrcpt, e); 386 else 387 define('u', NULL, e); 388 389 /* full name of from person */ 390 p = hvalue("full-name", e->e_header); 391 if (p != NULL) 392 define('x', p, e); 393 394 if (tTd(32, 1)) 395 printf("----- collected header -----\n"); 396 msgid = "<none>"; 397 for (h = e->e_header; h != NULL; h = h->h_link) 398 { 399 if (h->h_value == NULL) 400 { 401 if (tTd(32, 1)) 402 printf("%s: <NULL>\n", h->h_field); 403 continue; 404 } 405 406 /* do early binding */ 407 if (bitset(H_DEFAULT, h->h_flags)) 408 { 409 expand(h->h_value, buf, sizeof buf, e); 410 if (buf[0] != '\0') 411 { 412 h->h_value = newstr(buf); 413 h->h_flags &= ~H_DEFAULT; 414 } 415 } 416 417 if (tTd(32, 1)) 418 { 419 printf("%s: ", h->h_field); 420 xputs(h->h_value); 421 printf("\n"); 422 } 423 424 /* count the number of times it has been processed */ 425 if (bitset(H_TRACE, h->h_flags)) 426 hopcnt++; 427 428 /* send to this person if we so desire */ 429 if (GrabTo && bitset(H_RCPT, h->h_flags) && 430 !bitset(H_DEFAULT, h->h_flags) && 431 (!bitset(EF_RESENT, e->e_flags) || bitset(H_RESENT, h->h_flags))) 432 { 433 int saveflags = e->e_flags; 434 435 (void) sendtolist(h->h_value, NULLADDR, 436 &e->e_sendqueue, 0, e); 437 438 /* delete fatal errors generated by this address */ 439 if (!GrabTo && !bitset(EF_FATALERRS, saveflags)) 440 e->e_flags &= ~EF_FATALERRS; 441 } 442 443 /* save the message-id for logging */ 444 if (full && strcasecmp(h->h_field, "message-id") == 0) 445 { 446 msgid = h->h_value; 447 while (isascii(*msgid) && isspace(*msgid)) 448 msgid++; 449 } 450 451 /* see if this is a return-receipt header */ 452 if (bitset(H_RECEIPTTO, h->h_flags)) 453 e->e_receiptto = h->h_value; 454 } 455 if (tTd(32, 1)) 456 printf("----------------------------\n"); 457 458 /* if we are just verifying (that is, sendmail -t -bv), drop out now */ 459 if (OpMode == MD_VERIFY) 460 return; 461 462 /* store hop count */ 463 if (hopcnt > e->e_hopcount) 464 e->e_hopcount = hopcnt; 465 466 /* message priority */ 467 p = hvalue("precedence", e->e_header); 468 if (p != NULL) 469 e->e_class = priencode(p); 470 if (full) 471 { 472 e->e_msgpriority = e->e_msgsize 473 - e->e_class * WkClassFact 474 + e->e_nrcpts * WkRecipFact; 475 if (e->e_class < 0) 476 e->e_timeoutclass = TOC_NONURGENT; 477 else if (e->e_class > 0) 478 e->e_timeoutclass = TOC_URGENT; 479 } 480 481 /* message timeout priority */ 482 p = hvalue("priority", e->e_header); 483 if (full && p != NULL) 484 { 485 /* (this should be in the configuration file) */ 486 if (strcasecmp(p, "urgent")) 487 e->e_timeoutclass = TOC_URGENT; 488 else if (strcasecmp(p, "normal")) 489 e->e_timeoutclass = TOC_NORMAL; 490 else if (strcasecmp(p, "non-urgent")) 491 e->e_timeoutclass = TOC_NONURGENT; 492 } 493 494 /* date message originated */ 495 p = hvalue("posted-date", e->e_header); 496 if (p == NULL) 497 p = hvalue("date", e->e_header); 498 if (p != NULL) 499 define('a', p, e); 500 501 /* check to see if this is a MIME message */ 502 if ((e->e_bodytype != NULL && 503 strcasecmp(e->e_bodytype, "8BITMIME") == 0) || 504 hvalue("MIME-Version", e->e_header) != NULL) 505 { 506 e->e_flags |= EF_IS_MIME; 507 if (HasEightBits) 508 e->e_bodytype = "8BITMIME"; 509 } 510 511 /* 512 ** From person in antiquated ARPANET mode 513 ** required by UK Grey Book e-mail gateways (sigh) 514 */ 515 516 if (OpMode == MD_ARPAFTP) 517 { 518 register struct hdrinfo *hi; 519 520 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 521 { 522 if (bitset(H_FROM, hi->hi_flags) && 523 (!bitset(H_RESENT, hi->hi_flags) || 524 bitset(EF_RESENT, e->e_flags)) && 525 (p = hvalue(hi->hi_field, e->e_header)) != NULL) 526 break; 527 } 528 if (hi->hi_field != NULL) 529 { 530 if (tTd(32, 2)) 531 printf("eatheader: setsender(*%s == %s)\n", 532 hi->hi_field, p); 533 setsender(p, e, NULL, TRUE); 534 } 535 } 536 537 /* 538 ** Log collection information. 539 */ 540 541 # ifdef LOG 542 if (bitset(EF_LOGSENDER, e->e_flags) && LogLevel > 4) 543 logsender(e, msgid); 544 # endif /* LOG */ 545 e->e_flags &= ~EF_LOGSENDER; 546 } 547 /* 548 ** LOGSENDER -- log sender information 549 ** 550 ** Parameters: 551 ** e -- the envelope to log 552 ** msgid -- the message id 553 ** 554 ** Returns: 555 ** none 556 */ 557 558 logsender(e, msgid) 559 register ENVELOPE *e; 560 char *msgid; 561 { 562 # ifdef LOG 563 char *name; 564 register char *sbp; 565 register char *p; 566 int l; 567 char hbuf[MAXNAME + 1]; 568 char sbuf[MAXLINE + 1]; 569 char mbuf[MAXNAME + 1]; 570 571 /* don't allow newlines in the message-id */ 572 if (msgid != NULL) 573 { 574 l = strlen(msgid); 575 if (l > sizeof mbuf - 1) 576 l = sizeof mbuf - 1; 577 bcopy(msgid, mbuf, l); 578 mbuf[l] = '\0'; 579 p = mbuf; 580 while ((p = strchr(p, '\n')) != NULL) 581 *p++ = ' '; 582 } 583 584 if (bitset(EF_RESPONSE, e->e_flags)) 585 name = "[RESPONSE]"; 586 else if ((name = macvalue('_', e)) != NULL) 587 ; 588 else if (RealHostName == NULL) 589 name = "localhost"; 590 else if (RealHostName[0] == '[') 591 name = RealHostName; 592 else 593 { 594 name = hbuf; 595 (void) sprintf(hbuf, "%.80s", RealHostName); 596 if (RealHostAddr.sa.sa_family != 0) 597 { 598 p = &hbuf[strlen(hbuf)]; 599 (void) sprintf(p, " (%s)", 600 anynet_ntoa(&RealHostAddr)); 601 } 602 } 603 604 /* some versions of syslog only take 5 printf args */ 605 # if (SYSLOG_BUFSIZE) >= 256 606 sbp = sbuf; 607 sprintf(sbp, "from=%.200s, size=%ld, class=%d, pri=%ld, nrcpts=%d", 608 e->e_from.q_paddr == NULL ? "<NONE>" : e->e_from.q_paddr, 609 e->e_msgsize, e->e_class, e->e_msgpriority, e->e_nrcpts); 610 sbp += strlen(sbp); 611 if (msgid != NULL) 612 { 613 sprintf(sbp, ", msgid=%.100s", mbuf); 614 sbp += strlen(sbp); 615 } 616 if (e->e_bodytype != NULL) 617 { 618 (void) sprintf(sbp, ", bodytype=%.20s", e->e_bodytype); 619 sbp += strlen(sbp); 620 } 621 p = macvalue('r', e); 622 if (p != NULL) 623 (void) sprintf(sbp, ", proto=%.20s", p); 624 syslog(LOG_INFO, "%s: %s, relay=%s", 625 e->e_id, sbuf, name); 626 627 # else /* short syslog buffer */ 628 629 syslog(LOG_INFO, "%s: from=%s", 630 e->e_id, e->e_from.q_paddr == NULL ? "<NONE>" : 631 shortenstring(e->e_from.q_paddr, 83)); 632 syslog(LOG_INFO, "%s: size=%ld, class=%ld, pri=%ld, nrcpts=%d", 633 e->e_id, e->e_msgsize, e->e_class, 634 e->e_msgpriority, e->e_nrcpts); 635 if (msgid != NULL) 636 syslog(LOG_INFO, "%s: msgid=%s", e->e_id, mbuf); 637 sbp = sbuf; 638 sprintf(sbp, "%s:", e->e_id); 639 sbp += strlen(sbp); 640 if (e->e_bodytype != NULL) 641 { 642 sprintf(sbp, " bodytype=%s,", e->e_bodytype); 643 sbp += strlen(sbp); 644 } 645 p = macvalue('r', e); 646 if (p != NULL) 647 { 648 sprintf(sbp, " proto=%s,", p); 649 sbp += strlen(sbp); 650 } 651 syslog(LOG_INFO, "%s relay=%s", sbuf, name); 652 # endif 653 # endif 654 } 655 /* 656 ** PRIENCODE -- encode external priority names into internal values. 657 ** 658 ** Parameters: 659 ** p -- priority in ascii. 660 ** 661 ** Returns: 662 ** priority as a numeric level. 663 ** 664 ** Side Effects: 665 ** none. 666 */ 667 668 priencode(p) 669 char *p; 670 { 671 register int i; 672 673 for (i = 0; i < NumPriorities; i++) 674 { 675 if (!strcasecmp(p, Priorities[i].pri_name)) 676 return (Priorities[i].pri_val); 677 } 678 679 /* unknown priority */ 680 return (0); 681 } 682 /* 683 ** CRACKADDR -- parse an address and turn it into a macro 684 ** 685 ** This doesn't actually parse the address -- it just extracts 686 ** it and replaces it with "$g". The parse is totally ad hoc 687 ** and isn't even guaranteed to leave something syntactically 688 ** identical to what it started with. However, it does leave 689 ** something semantically identical. 690 ** 691 ** This algorithm has been cleaned up to handle a wider range 692 ** of cases -- notably quoted and backslash escaped strings. 693 ** This modification makes it substantially better at preserving 694 ** the original syntax. 695 ** 696 ** Parameters: 697 ** addr -- the address to be cracked. 698 ** 699 ** Returns: 700 ** a pointer to the new version. 701 ** 702 ** Side Effects: 703 ** none. 704 ** 705 ** Warning: 706 ** The return value is saved in local storage and should 707 ** be copied if it is to be reused. 708 */ 709 710 char * 711 crackaddr(addr) 712 register char *addr; 713 { 714 register char *p; 715 register char c; 716 int cmtlev; 717 int realcmtlev; 718 int anglelev, realanglelev; 719 int copylev; 720 bool qmode; 721 bool realqmode; 722 bool skipping; 723 bool putgmac = FALSE; 724 bool quoteit = FALSE; 725 bool gotangle = FALSE; 726 bool gotcolon = FALSE; 727 register char *bp; 728 char *buflim; 729 char *bufhead; 730 char *addrhead; 731 static char buf[MAXNAME + 1]; 732 733 if (tTd(33, 1)) 734 printf("crackaddr(%s)\n", addr); 735 736 /* strip leading spaces */ 737 while (*addr != '\0' && isascii(*addr) && isspace(*addr)) 738 addr++; 739 740 /* 741 ** Start by assuming we have no angle brackets. This will be 742 ** adjusted later if we find them. 743 */ 744 745 bp = bufhead = buf; 746 buflim = &buf[sizeof buf - 5]; 747 p = addrhead = addr; 748 copylev = anglelev = realanglelev = cmtlev = realcmtlev = 0; 749 qmode = realqmode = FALSE; 750 751 while ((c = *p++) != '\0') 752 { 753 /* 754 ** If the buffer is overful, go into a special "skipping" 755 ** mode that tries to keep legal syntax but doesn't actually 756 ** output things. 757 */ 758 759 skipping = bp >= buflim; 760 761 if (copylev > 0 && !skipping) 762 *bp++ = c; 763 764 /* check for backslash escapes */ 765 if (c == '\\') 766 { 767 /* arrange to quote the address */ 768 if (cmtlev <= 0 && !qmode) 769 quoteit = TRUE; 770 771 if ((c = *p++) == '\0') 772 { 773 /* too far */ 774 p--; 775 goto putg; 776 } 777 if (copylev > 0 && !skipping) 778 *bp++ = c; 779 goto putg; 780 } 781 782 /* check for quoted strings */ 783 if (c == '"' && cmtlev <= 0) 784 { 785 qmode = !qmode; 786 if (copylev > 0 && !skipping) 787 realqmode = !realqmode; 788 continue; 789 } 790 if (qmode) 791 goto putg; 792 793 /* check for comments */ 794 if (c == '(') 795 { 796 cmtlev++; 797 798 /* allow space for closing paren */ 799 if (!skipping) 800 { 801 buflim--; 802 realcmtlev++; 803 if (copylev++ <= 0) 804 { 805 *bp++ = ' '; 806 *bp++ = c; 807 } 808 } 809 } 810 if (cmtlev > 0) 811 { 812 if (c == ')') 813 { 814 cmtlev--; 815 copylev--; 816 if (!skipping) 817 { 818 realcmtlev--; 819 buflim++; 820 } 821 } 822 continue; 823 } 824 else if (c == ')') 825 { 826 /* syntax error: unmatched ) */ 827 if (copylev > 0 && !skipping) 828 bp--; 829 } 830 831 /* check for group: list; syntax */ 832 if (c == ':' && anglelev <= 0 && !gotcolon && !ColonOkInAddr) 833 { 834 register char *q; 835 836 if (*p == ':') 837 { 838 /* special case -- :: syntax */ 839 if (cmtlev <= 0 && !qmode) 840 quoteit = TRUE; 841 if (copylev > 0 && !skipping) 842 { 843 *bp++ = c; 844 *bp++ = c; 845 } 846 p++; 847 goto putg; 848 } 849 850 gotcolon = TRUE; 851 852 bp = bufhead; 853 if (quoteit) 854 { 855 *bp++ = '"'; 856 857 /* back up over the ':' and any spaces */ 858 --p; 859 while (isascii(*--p) && isspace(*p)) 860 continue; 861 p++; 862 } 863 for (q = addrhead; q < p; ) 864 { 865 c = *q++; 866 if (bp < buflim) 867 { 868 if (quoteit && c == '"') 869 *bp++ = '\\'; 870 *bp++ = c; 871 } 872 } 873 if (quoteit) 874 { 875 if (bp == &bufhead[1]) 876 bp--; 877 else 878 *bp++ = '"'; 879 while ((c = *p++) != ':') 880 { 881 if (bp < buflim) 882 *bp++ = c; 883 } 884 *bp++ = c; 885 } 886 887 /* any trailing white space is part of group: */ 888 while (isascii(*p) && isspace(*p) && bp < buflim) 889 *bp++ = *p++; 890 copylev = 0; 891 putgmac = quoteit = FALSE; 892 bufhead = bp; 893 addrhead = p; 894 continue; 895 } 896 897 if (c == ';' && copylev <= 0 && !ColonOkInAddr) 898 { 899 register char *q = p; 900 901 if (bp < buflim) 902 *bp++ = c; 903 } 904 905 /* check for characters that may have to be quoted */ 906 if (strchr(".'@,;:\\()[]", c) != NULL) 907 { 908 /* 909 ** If these occur as the phrase part of a <> 910 ** construct, but are not inside of () or already 911 ** quoted, they will have to be quoted. Note that 912 ** now (but don't actually do the quoting). 913 */ 914 915 if (cmtlev <= 0 && !qmode) 916 quoteit = TRUE; 917 } 918 919 /* check for angle brackets */ 920 if (c == '<') 921 { 922 register char *q; 923 924 /* assume first of two angles is bogus */ 925 if (gotangle) 926 quoteit = TRUE; 927 gotangle = TRUE; 928 929 /* oops -- have to change our mind */ 930 anglelev = 1; 931 if (!skipping) 932 realanglelev = 1; 933 934 bp = bufhead; 935 if (quoteit) 936 { 937 *bp++ = '"'; 938 939 /* back up over the '<' and any spaces */ 940 --p; 941 while (isascii(*--p) && isspace(*p)) 942 continue; 943 p++; 944 } 945 for (q = addrhead; q < p; ) 946 { 947 c = *q++; 948 if (bp < buflim) 949 { 950 if (quoteit && c == '"') 951 *bp++ = '\\'; 952 *bp++ = c; 953 } 954 } 955 if (quoteit) 956 { 957 if (bp == &buf[1]) 958 bp--; 959 else 960 *bp++ = '"'; 961 while ((c = *p++) != '<') 962 { 963 if (bp < buflim) 964 *bp++ = c; 965 } 966 *bp++ = c; 967 } 968 copylev = 0; 969 putgmac = quoteit = FALSE; 970 continue; 971 } 972 973 if (c == '>') 974 { 975 if (anglelev > 0) 976 { 977 anglelev--; 978 if (!skipping) 979 { 980 realanglelev--; 981 buflim++; 982 } 983 } 984 else if (!skipping) 985 { 986 /* syntax error: unmatched > */ 987 if (copylev > 0) 988 bp--; 989 quoteit = TRUE; 990 continue; 991 } 992 if (copylev++ <= 0) 993 *bp++ = c; 994 continue; 995 } 996 997 /* must be a real address character */ 998 putg: 999 if (copylev <= 0 && !putgmac) 1000 { 1001 *bp++ = MACROEXPAND; 1002 *bp++ = 'g'; 1003 putgmac = TRUE; 1004 } 1005 } 1006 1007 /* repair any syntactic damage */ 1008 if (realqmode) 1009 *bp++ = '"'; 1010 while (realcmtlev-- > 0) 1011 *bp++ = ')'; 1012 while (realanglelev-- > 0) 1013 *bp++ = '>'; 1014 *bp++ = '\0'; 1015 1016 if (tTd(33, 1)) 1017 printf("crackaddr=>`%s'\n", buf); 1018 1019 return (buf); 1020 } 1021 /* 1022 ** PUTHEADER -- put the header part of a message from the in-core copy 1023 ** 1024 ** Parameters: 1025 ** mci -- the connection information. 1026 ** h -- the header to put. 1027 ** e -- envelope to use. 1028 ** 1029 ** Returns: 1030 ** none. 1031 ** 1032 ** Side Effects: 1033 ** none. 1034 */ 1035 1036 /* 1037 * Macro for fast max (not available in e.g. DG/UX, 386/ix). 1038 */ 1039 #ifndef MAX 1040 # define MAX(a,b) (((a)>(b))?(a):(b)) 1041 #endif 1042 1043 putheader(mci, h, e) 1044 register MCI *mci; 1045 register HDR *h; 1046 register ENVELOPE *e; 1047 { 1048 char buf[MAX(MAXLINE,BUFSIZ)]; 1049 char obuf[MAXLINE]; 1050 1051 if (tTd(34, 1)) 1052 printf("--- putheader, mailer = %s ---\n", 1053 mci->mci_mailer->m_name); 1054 1055 mci->mci_flags |= MCIF_INHEADER; 1056 for (; h != NULL; h = h->h_link) 1057 { 1058 register char *p; 1059 extern bool bitintersect(); 1060 1061 if (tTd(34, 11)) 1062 { 1063 printf(" %s: ", h->h_field); 1064 xputs(h->h_value); 1065 } 1066 1067 /* suppress Content-Transfer-Encoding: if we are MIMEing */ 1068 if (bitset(H_CTE, h->h_flags) && 1069 bitset(MCIF_CVT8TO7|MCIF_INMIME, mci->mci_flags)) 1070 { 1071 if (tTd(34, 11)) 1072 printf(" (skipped (content-transfer-encoding))\n"); 1073 continue; 1074 } 1075 1076 if (bitset(MCIF_INMIME, mci->mci_flags)) 1077 goto vanilla; 1078 1079 if (bitset(H_CHECK|H_ACHECK, h->h_flags) && 1080 !bitintersect(h->h_mflags, mci->mci_mailer->m_flags)) 1081 { 1082 if (tTd(34, 11)) 1083 printf(" (skipped)\n"); 1084 continue; 1085 } 1086 1087 /* handle Resent-... headers specially */ 1088 if (bitset(H_RESENT, h->h_flags) && !bitset(EF_RESENT, e->e_flags)) 1089 { 1090 if (tTd(34, 11)) 1091 printf(" (skipped (resent))\n"); 1092 continue; 1093 } 1094 1095 /* suppress return receipts if requested */ 1096 if (bitset(H_RECEIPTTO, h->h_flags) && 1097 bitset(EF_NORECEIPT, e->e_flags)) 1098 { 1099 if (tTd(34, 11)) 1100 printf(" (skipped (receipt))\n"); 1101 continue; 1102 } 1103 1104 /* macro expand value if generated internally */ 1105 p = h->h_value; 1106 if (bitset(H_DEFAULT, h->h_flags)) 1107 { 1108 expand(p, buf, sizeof buf, e); 1109 p = buf; 1110 if (p == NULL || *p == '\0') 1111 { 1112 if (tTd(34, 11)) 1113 printf(" (skipped -- null value)\n"); 1114 continue; 1115 } 1116 } 1117 1118 if (tTd(34, 11)) 1119 printf("\n"); 1120 1121 if (bitset(H_STRIPVAL, h->h_flags)) 1122 { 1123 /* empty field */ 1124 (void) sprintf(obuf, "%s:", h->h_field); 1125 putline(obuf, mci); 1126 } 1127 else if (bitset(H_FROM|H_RCPT, h->h_flags)) 1128 { 1129 /* address field */ 1130 bool oldstyle = bitset(EF_OLDSTYLE, e->e_flags); 1131 1132 if (bitset(H_FROM, h->h_flags)) 1133 oldstyle = FALSE; 1134 commaize(h, p, oldstyle, mci, e); 1135 } 1136 else 1137 { 1138 /* vanilla header line */ 1139 register char *nlp; 1140 1141 vanilla: 1142 (void) sprintf(obuf, "%s: ", h->h_field); 1143 while ((nlp = strchr(p, '\n')) != NULL) 1144 { 1145 *nlp = '\0'; 1146 (void) strcat(obuf, p); 1147 *nlp = '\n'; 1148 putline(obuf, mci); 1149 p = ++nlp; 1150 obuf[0] = '\0'; 1151 } 1152 (void) strcat(obuf, p); 1153 putline(obuf, mci); 1154 } 1155 } 1156 1157 /* 1158 ** If we are converting this to a MIME message, add the 1159 ** MIME headers. 1160 */ 1161 1162 if (bitset(MM_MIME8BIT, MimeMode) && 1163 bitset(EF_HAS8BIT, e->e_flags) && 1164 !bitnset(M_8BITS, mci->mci_mailer->m_flags) && 1165 !bitset(MCIF_CVT8TO7, mci->mci_flags)) 1166 { 1167 if (hvalue("MIME-Version", e->e_header) == NULL) 1168 putline("MIME-Version: 1.0", mci); 1169 if (hvalue("Content-Type", e->e_header) == NULL) 1170 { 1171 sprintf(obuf, "Content-Type: text/plain; charset=%s", 1172 defcharset(e)); 1173 putline(obuf, mci); 1174 } 1175 if (hvalue("Content-Transfer-Encoding", e->e_header) == NULL) 1176 putline("Content-Transfer-Encoding: 8bit", mci); 1177 } 1178 } 1179 /* 1180 ** COMMAIZE -- output a header field, making a comma-translated list. 1181 ** 1182 ** Parameters: 1183 ** h -- the header field to output. 1184 ** p -- the value to put in it. 1185 ** oldstyle -- TRUE if this is an old style header. 1186 ** mci -- the connection information. 1187 ** e -- the envelope containing the message. 1188 ** 1189 ** Returns: 1190 ** none. 1191 ** 1192 ** Side Effects: 1193 ** outputs "p" to file "fp". 1194 */ 1195 1196 void 1197 commaize(h, p, oldstyle, mci, e) 1198 register HDR *h; 1199 register char *p; 1200 bool oldstyle; 1201 register MCI *mci; 1202 register ENVELOPE *e; 1203 { 1204 register char *obp; 1205 int opos; 1206 int omax; 1207 bool firstone = TRUE; 1208 char obuf[MAXLINE + 3]; 1209 1210 /* 1211 ** Output the address list translated by the 1212 ** mailer and with commas. 1213 */ 1214 1215 if (tTd(14, 2)) 1216 printf("commaize(%s: %s)\n", h->h_field, p); 1217 1218 obp = obuf; 1219 (void) sprintf(obp, "%s: ", h->h_field); 1220 opos = strlen(h->h_field) + 2; 1221 obp += opos; 1222 omax = mci->mci_mailer->m_linelimit - 2; 1223 if (omax < 0 || omax > 78) 1224 omax = 78; 1225 1226 /* 1227 ** Run through the list of values. 1228 */ 1229 1230 while (*p != '\0') 1231 { 1232 register char *name; 1233 register int c; 1234 char savechar; 1235 int flags; 1236 auto int stat; 1237 1238 /* 1239 ** Find the end of the name. New style names 1240 ** end with a comma, old style names end with 1241 ** a space character. However, spaces do not 1242 ** necessarily delimit an old-style name -- at 1243 ** signs mean keep going. 1244 */ 1245 1246 /* find end of name */ 1247 while ((isascii(*p) && isspace(*p)) || *p == ',') 1248 p++; 1249 name = p; 1250 for (;;) 1251 { 1252 auto char *oldp; 1253 char pvpbuf[PSBUFSIZE]; 1254 1255 (void) prescan(p, oldstyle ? ' ' : ',', pvpbuf, 1256 sizeof pvpbuf, &oldp, NULL); 1257 p = oldp; 1258 1259 /* look to see if we have an at sign */ 1260 while (*p != '\0' && isascii(*p) && isspace(*p)) 1261 p++; 1262 1263 if (*p != '@') 1264 { 1265 p = oldp; 1266 break; 1267 } 1268 p += *p == '@' ? 1 : 2; 1269 while (*p != '\0' && isascii(*p) && isspace(*p)) 1270 p++; 1271 } 1272 /* at the end of one complete name */ 1273 1274 /* strip off trailing white space */ 1275 while (p >= name && 1276 ((isascii(*p) && isspace(*p)) || *p == ',' || *p == '\0')) 1277 p--; 1278 if (++p == name) 1279 continue; 1280 savechar = *p; 1281 *p = '\0'; 1282 1283 /* translate the name to be relative */ 1284 flags = RF_HEADERADDR|RF_ADDDOMAIN; 1285 if (bitset(H_FROM, h->h_flags)) 1286 flags |= RF_SENDERADDR; 1287 #ifdef USERDB 1288 else if (e->e_from.q_mailer != NULL && 1289 bitnset(M_UDBRECIPIENT, e->e_from.q_mailer->m_flags)) 1290 { 1291 extern char *udbsender(); 1292 1293 name = udbsender(name); 1294 } 1295 #endif 1296 stat = EX_OK; 1297 name = remotename(name, mci->mci_mailer, flags, &stat, e); 1298 if (*name == '\0') 1299 { 1300 *p = savechar; 1301 continue; 1302 } 1303 1304 /* output the name with nice formatting */ 1305 opos += strlen(name); 1306 if (!firstone) 1307 opos += 2; 1308 if (opos > omax && !firstone) 1309 { 1310 (void) strcpy(obp, ",\n"); 1311 putline(obuf, mci); 1312 obp = obuf; 1313 (void) strcpy(obp, " "); 1314 opos = strlen(obp); 1315 obp += opos; 1316 opos += strlen(name); 1317 } 1318 else if (!firstone) 1319 { 1320 (void) strcpy(obp, ", "); 1321 obp += 2; 1322 } 1323 1324 while ((c = *name++) != '\0' && obp < &obuf[MAXLINE]) 1325 *obp++ = c; 1326 firstone = FALSE; 1327 *p = savechar; 1328 } 1329 (void) strcpy(obp, "\n"); 1330 putline(obuf, mci); 1331 } 1332 /* 1333 ** COPYHEADER -- copy header list 1334 ** 1335 ** This routine is the equivalent of newstr for header lists 1336 ** 1337 ** Parameters: 1338 ** header -- list of header structures to copy. 1339 ** 1340 ** Returns: 1341 ** a copy of 'header'. 1342 ** 1343 ** Side Effects: 1344 ** none. 1345 */ 1346 1347 HDR * 1348 copyheader(header) 1349 register HDR *header; 1350 { 1351 register HDR *newhdr; 1352 HDR *ret; 1353 register HDR **tail = &ret; 1354 1355 while (header != NULL) 1356 { 1357 newhdr = (HDR *) xalloc(sizeof(HDR)); 1358 STRUCTCOPY(*header, *newhdr); 1359 *tail = newhdr; 1360 tail = &newhdr->h_link; 1361 header = header->h_link; 1362 } 1363 *tail = NULL; 1364 1365 return ret; 1366 } 1367