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