1 /* 2 * Copyright (c) 1983 Eric P. Allman 3 * Copyright (c) 1988 Regents of the University of California. 4 * All rights reserved. 5 * 6 * %sccs.include.redist.c% 7 */ 8 9 #ifndef lint 10 static char sccsid[] = "@(#)headers.c 6.35 (Berkeley) 05/27/93"; 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 48 if (tTd(31, 6)) 49 printf("chompheader: %s\n", line); 50 51 /* strip off options */ 52 clrbitmap(mopts); 53 p = line; 54 if (*p == '?') 55 { 56 /* have some */ 57 register char *q = strchr(p + 1, *p); 58 59 if (q != NULL) 60 { 61 *q++ = '\0'; 62 while (*++p != '\0') 63 setbitn(*p, mopts); 64 p = q; 65 } 66 else 67 usrerr("553 header syntax error, line \"%s\"", line); 68 cond = TRUE; 69 } 70 71 /* find canonical name */ 72 fname = p; 73 p = strchr(p, ':'); 74 if (p == NULL) 75 { 76 syserr("553 header syntax error, line \"%s\"", line); 77 return (0); 78 } 79 fvalue = &p[1]; 80 while (isascii(*--p) && isspace(*p)) 81 continue; 82 *++p = '\0'; 83 84 /* strip field value on front */ 85 if (*fvalue == ' ') 86 fvalue++; 87 88 /* see if it is a known type */ 89 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 90 { 91 if (strcasecmp(hi->hi_field, fname) == 0) 92 break; 93 } 94 95 /* see if this is a resent message */ 96 if (!def && bitset(H_RESENT, hi->hi_flags)) 97 e->e_flags |= EF_RESENT; 98 99 /* if this means "end of header" quit now */ 100 if (bitset(H_EOH, hi->hi_flags)) 101 return (hi->hi_flags); 102 103 /* drop explicit From: if same as what we would generate -- for MH */ 104 p = "resent-from"; 105 if (!bitset(EF_RESENT, e->e_flags)) 106 p += 7; 107 if (!def && !bitset(EF_QUEUERUN, e->e_flags) && strcasecmp(fname, p) == 0) 108 { 109 if (e->e_from.q_paddr != NULL && 110 strcmp(fvalue, e->e_from.q_paddr) == 0) 111 return (hi->hi_flags); 112 } 113 114 /* delete default value for this header */ 115 for (hp = &e->e_header; (h = *hp) != NULL; hp = &h->h_link) 116 { 117 if (strcasecmp(fname, h->h_field) == 0 && 118 bitset(H_DEFAULT, h->h_flags) && 119 !bitset(H_FORCE, h->h_flags)) 120 h->h_value = NULL; 121 } 122 123 /* create a new node */ 124 h = (HDR *) xalloc(sizeof *h); 125 h->h_field = newstr(fname); 126 h->h_value = NULL; 127 h->h_link = NULL; 128 bcopy((char *) mopts, (char *) h->h_mflags, sizeof mopts); 129 *hp = h; 130 h->h_flags = hi->hi_flags; 131 if (def) 132 h->h_flags |= H_DEFAULT; 133 if (cond) 134 h->h_flags |= H_CHECK; 135 if (h->h_value != NULL) 136 free((char *) h->h_value); 137 h->h_value = newstr(fvalue); 138 139 /* hack to see if this is a new format message */ 140 if (!def && bitset(H_RCPT|H_FROM, h->h_flags) && 141 (strchr(fvalue, ',') != NULL || strchr(fvalue, '(') != NULL || 142 strchr(fvalue, '<') != NULL || strchr(fvalue, ';') != NULL)) 143 { 144 e->e_flags &= ~EF_OLDSTYLE; 145 } 146 147 return (h->h_flags); 148 } 149 /* 150 ** ADDHEADER -- add a header entry to the end of the queue. 151 ** 152 ** This bypasses the special checking of chompheader. 153 ** 154 ** Parameters: 155 ** field -- the name of the header field. 156 ** value -- the value of the field. 157 ** e -- the envelope to add them to. 158 ** 159 ** Returns: 160 ** none. 161 ** 162 ** Side Effects: 163 ** adds the field on the list of headers for this envelope. 164 */ 165 166 addheader(field, value, e) 167 char *field; 168 char *value; 169 ENVELOPE *e; 170 { 171 register HDR *h; 172 register struct hdrinfo *hi; 173 HDR **hp; 174 175 /* find info struct */ 176 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 177 { 178 if (strcasecmp(field, hi->hi_field) == 0) 179 break; 180 } 181 182 /* find current place in list -- keep back pointer? */ 183 for (hp = &e->e_header; (h = *hp) != NULL; hp = &h->h_link) 184 { 185 if (strcasecmp(field, h->h_field) == 0) 186 break; 187 } 188 189 /* allocate space for new header */ 190 h = (HDR *) xalloc(sizeof *h); 191 h->h_field = field; 192 h->h_value = newstr(value); 193 h->h_link = *hp; 194 h->h_flags = hi->hi_flags | H_DEFAULT; 195 clrbitmap(h->h_mflags); 196 *hp = h; 197 } 198 /* 199 ** HVALUE -- return value of a header. 200 ** 201 ** Only "real" fields (i.e., ones that have not been supplied 202 ** as a default) are used. 203 ** 204 ** Parameters: 205 ** field -- the field name. 206 ** e -- the envelope containing the header. 207 ** 208 ** Returns: 209 ** pointer to the value part. 210 ** NULL if not found. 211 ** 212 ** Side Effects: 213 ** none. 214 */ 215 216 char * 217 hvalue(field, e) 218 char *field; 219 register ENVELOPE *e; 220 { 221 register HDR *h; 222 223 for (h = e->e_header; h != NULL; h = h->h_link) 224 { 225 if (!bitset(H_DEFAULT, h->h_flags) && 226 strcasecmp(h->h_field, field) == 0) 227 return (h->h_value); 228 } 229 return (NULL); 230 } 231 /* 232 ** ISHEADER -- predicate telling if argument is a header. 233 ** 234 ** A line is a header if it has a single word followed by 235 ** optional white space followed by a colon. 236 ** 237 ** Parameters: 238 ** s -- string to check for possible headerness. 239 ** 240 ** Returns: 241 ** TRUE if s is a header. 242 ** FALSE otherwise. 243 ** 244 ** Side Effects: 245 ** none. 246 */ 247 248 bool 249 isheader(s) 250 register char *s; 251 { 252 while (*s > ' ' && *s != ':' && *s != '\0') 253 s++; 254 255 /* following technically violates RFC822 */ 256 while (isascii(*s) && isspace(*s)) 257 s++; 258 259 return (*s == ':'); 260 } 261 /* 262 ** EATHEADER -- run through the stored header and extract info. 263 ** 264 ** Parameters: 265 ** e -- the envelope to process. 266 ** full -- if set, do full processing (e.g., compute 267 ** message priority). 268 ** 269 ** Returns: 270 ** none. 271 ** 272 ** Side Effects: 273 ** Sets a bunch of global variables from information 274 ** in the collected header. 275 ** Aborts the message if the hop count is exceeded. 276 */ 277 278 eatheader(e, full) 279 register ENVELOPE *e; 280 bool full; 281 { 282 register HDR *h; 283 register char *p; 284 int hopcnt = 0; 285 char *msgid; 286 char buf[MAXLINE]; 287 288 /* 289 ** Set up macros for possible expansion in headers. 290 */ 291 292 define('f', e->e_sender, e); 293 define('g', e->e_sender, e); 294 295 if (tTd(32, 1)) 296 printf("----- collected header -----\n"); 297 msgid = "<none>"; 298 for (h = e->e_header; h != NULL; h = h->h_link) 299 { 300 /* do early binding */ 301 if (bitset(H_DEFAULT, h->h_flags) && h->h_value != NULL) 302 { 303 expand(h->h_value, buf, &buf[sizeof buf], e); 304 if (buf[0] != '\0') 305 { 306 h->h_value = newstr(buf); 307 h->h_flags &= ~H_DEFAULT; 308 } 309 } 310 311 if (tTd(32, 1)) 312 printf("%s: %s\n", h->h_field, h->h_value); 313 314 /* count the number of times it has been processed */ 315 if (bitset(H_TRACE, h->h_flags)) 316 hopcnt++; 317 318 /* send to this person if we so desire */ 319 if (GrabTo && bitset(H_RCPT, h->h_flags) && 320 !bitset(H_DEFAULT, h->h_flags) && 321 (!bitset(EF_RESENT, e->e_flags) || bitset(H_RESENT, h->h_flags))) 322 { 323 (void) sendtolist(h->h_value, (ADDRESS *) NULL, 324 &e->e_sendqueue, e); 325 } 326 327 /* save the message-id for logging */ 328 if (full && h->h_value != NULL && 329 strcasecmp(h->h_field, "message-id") == 0) 330 { 331 msgid = h->h_value; 332 while (isascii(*msgid) && isspace(*msgid)) 333 msgid++; 334 } 335 336 /* see if this is a return-receipt header */ 337 if (bitset(H_RECEIPTTO, h->h_flags)) 338 e->e_receiptto = h->h_value; 339 340 /* see if this is an errors-to header */ 341 if (bitset(H_ERRORSTO, h->h_flags)) 342 (void) sendtolist(h->h_value, (ADDRESS *) NULL, 343 &e->e_errorqueue, e); 344 } 345 if (tTd(32, 1)) 346 printf("----------------------------\n"); 347 348 /* if we are just verifying (that is, sendmail -t -bv), drop out now */ 349 if (OpMode == MD_VERIFY) 350 return; 351 352 /* store hop count */ 353 if (hopcnt > e->e_hopcount) 354 e->e_hopcount = hopcnt; 355 356 /* message priority */ 357 p = hvalue("precedence", e); 358 if (p != NULL) 359 e->e_class = priencode(p); 360 if (full) 361 e->e_msgpriority = e->e_msgsize 362 - e->e_class * WkClassFact 363 + e->e_nrcpts * WkRecipFact; 364 365 /* full name of from person */ 366 p = hvalue("full-name", e); 367 if (p != NULL) 368 define('x', p, e); 369 370 /* date message originated */ 371 p = hvalue("posted-date", e); 372 if (p == NULL) 373 p = hvalue("date", e); 374 if (p != NULL) 375 define('a', p, e); 376 377 /* 378 ** Log collection information. 379 */ 380 381 # ifdef LOG 382 if (full && LogLevel > 4) 383 { 384 char *name; 385 char hbuf[MAXNAME]; 386 char sbuf[MAXLINE]; 387 388 if (bitset(EF_RESPONSE, e->e_flags)) 389 name = "[RESPONSE]"; 390 else if ((name = macvalue('_', e)) != NULL) 391 ; 392 else if (RealHostName[0] == '[') 393 name = RealHostName; 394 else 395 { 396 name = hbuf; 397 (void) sprintf(hbuf, "%.80s", RealHostName); 398 if (RealHostAddr.sa.sa_family != 0) 399 { 400 p = &hbuf[strlen(hbuf)]; 401 (void) sprintf(p, " (%s)", 402 anynet_ntoa(&RealHostAddr)); 403 } 404 } 405 406 /* some versions of syslog only take 5 printf args */ 407 sprintf(sbuf, "from=%.200s, size=%ld, class=%d, pri=%ld, nrcpts=%d, msgid=%.100s", 408 e->e_from.q_paddr, e->e_msgsize, e->e_class, 409 e->e_msgpriority, e->e_nrcpts, msgid); 410 syslog(LOG_INFO, "%s: %s, relay=%s", 411 e->e_id, sbuf, name); 412 } 413 # endif /* LOG */ 414 } 415 /* 416 ** PRIENCODE -- encode external priority names into internal values. 417 ** 418 ** Parameters: 419 ** p -- priority in ascii. 420 ** 421 ** Returns: 422 ** priority as a numeric level. 423 ** 424 ** Side Effects: 425 ** none. 426 */ 427 428 priencode(p) 429 char *p; 430 { 431 register int i; 432 433 for (i = 0; i < NumPriorities; i++) 434 { 435 if (!strcasecmp(p, Priorities[i].pri_name)) 436 return (Priorities[i].pri_val); 437 } 438 439 /* unknown priority */ 440 return (0); 441 } 442 /* 443 ** CRACKADDR -- parse an address and turn it into a macro 444 ** 445 ** This doesn't actually parse the address -- it just extracts 446 ** it and replaces it with "$g". The parse is totally ad hoc 447 ** and isn't even guaranteed to leave something syntactically 448 ** identical to what it started with. However, it does leave 449 ** something semantically identical. 450 ** 451 ** This algorithm has been cleaned up to handle a wider range 452 ** of cases -- notably quoted and backslash escaped strings. 453 ** This modification makes it substantially better at preserving 454 ** the original syntax. 455 ** 456 ** Parameters: 457 ** addr -- the address to be cracked. 458 ** 459 ** Returns: 460 ** a pointer to the new version. 461 ** 462 ** Side Effects: 463 ** none. 464 ** 465 ** Warning: 466 ** The return value is saved in local storage and should 467 ** be copied if it is to be reused. 468 */ 469 470 char * 471 crackaddr(addr) 472 register char *addr; 473 { 474 register char *p; 475 register char c; 476 int cmtlev; 477 int realcmtlev; 478 int anglelev, realanglelev; 479 int copylev; 480 bool qmode; 481 bool realqmode; 482 bool skipping; 483 bool putgmac = FALSE; 484 bool quoteit = FALSE; 485 register char *bp; 486 char *buflim; 487 static char buf[MAXNAME]; 488 489 if (tTd(33, 1)) 490 printf("crackaddr(%s)\n", addr); 491 492 /* strip leading spaces */ 493 while (*addr != '\0' && isascii(*addr) && isspace(*addr)) 494 addr++; 495 496 /* 497 ** Start by assuming we have no angle brackets. This will be 498 ** adjusted later if we find them. 499 */ 500 501 bp = buf; 502 buflim = &buf[sizeof buf - 5]; 503 p = addr; 504 copylev = anglelev = realanglelev = cmtlev = realcmtlev = 0; 505 qmode = realqmode = FALSE; 506 507 while ((c = *p++) != '\0') 508 { 509 /* 510 ** If the buffer is overful, go into a special "skipping" 511 ** mode that tries to keep legal syntax but doesn't actually 512 ** output things. 513 */ 514 515 skipping = bp >= buflim; 516 517 if (copylev > 0 && !skipping) 518 *bp++ = c; 519 520 /* check for backslash escapes */ 521 if (c == '\\') 522 { 523 /* arrange to quote the address */ 524 if (cmtlev <= 0 && !qmode) 525 quoteit = TRUE; 526 527 if ((c = *p++) == '\0') 528 { 529 /* too far */ 530 p--; 531 goto putg; 532 } 533 if (copylev > 0 && !skipping) 534 *bp++ = c; 535 goto putg; 536 } 537 538 /* check for quoted strings */ 539 if (c == '"') 540 { 541 qmode = !qmode; 542 if (copylev > 0 && !skipping) 543 realqmode = !realqmode; 544 continue; 545 } 546 if (qmode) 547 goto putg; 548 549 /* check for comments */ 550 if (c == '(') 551 { 552 cmtlev++; 553 554 /* allow space for closing paren */ 555 if (!skipping) 556 { 557 buflim--; 558 realcmtlev++; 559 if (copylev++ <= 0) 560 { 561 *bp++ = ' '; 562 *bp++ = c; 563 } 564 } 565 } 566 if (cmtlev > 0) 567 { 568 if (c == ')') 569 { 570 cmtlev--; 571 copylev--; 572 if (!skipping) 573 { 574 realcmtlev--; 575 buflim++; 576 } 577 } 578 continue; 579 } 580 else if (c == ')') 581 { 582 /* syntax error: unmatched ) */ 583 if (!skipping) 584 bp--; 585 } 586 587 588 /* check for characters that may have to be quoted */ 589 if (strchr(".'@,;:\\()", c) != NULL) 590 { 591 /* 592 ** If these occur as the phrase part of a <> 593 ** construct, but are not inside of () or already 594 ** quoted, they will have to be quoted. Note that 595 ** now (but don't actually do the quoting). 596 */ 597 598 if (cmtlev <= 0 && !qmode) 599 quoteit = TRUE; 600 } 601 602 /* check for angle brackets */ 603 if (c == '<') 604 { 605 register char *q; 606 607 /* oops -- have to change our mind */ 608 anglelev++; 609 if (!skipping) 610 realanglelev++; 611 612 bp = buf; 613 if (quoteit) 614 { 615 *bp++ = '"'; 616 617 /* back up over the '<' and any spaces */ 618 --p; 619 while (isascii(*--p) && isspace(*p)) 620 continue; 621 p++; 622 } 623 for (q = addr; q < p; ) 624 { 625 c = *q++; 626 if (bp < buflim) 627 { 628 if (quoteit && c == '"') 629 *bp++ = '\\'; 630 *bp++ = c; 631 } 632 } 633 if (quoteit) 634 { 635 *bp++ = '"'; 636 while ((c = *p++) != '<') 637 { 638 if (bp < buflim) 639 *bp++ = c; 640 } 641 *bp++ = c; 642 } 643 copylev = 0; 644 putgmac = quoteit = FALSE; 645 continue; 646 } 647 648 if (c == '>') 649 { 650 if (anglelev > 0) 651 { 652 anglelev--; 653 if (!skipping) 654 { 655 realanglelev--; 656 buflim++; 657 } 658 } 659 else if (!skipping) 660 { 661 /* syntax error: unmatched > */ 662 if (copylev > 0) 663 bp--; 664 continue; 665 } 666 if (copylev++ <= 0) 667 *bp++ = c; 668 continue; 669 } 670 671 /* must be a real address character */ 672 putg: 673 if (copylev <= 0 && !putgmac) 674 { 675 *bp++ = MACROEXPAND; 676 *bp++ = 'g'; 677 putgmac = TRUE; 678 } 679 } 680 681 /* repair any syntactic damage */ 682 if (realqmode) 683 *bp++ = '"'; 684 while (realcmtlev-- > 0) 685 *bp++ = ')'; 686 while (realanglelev-- > 0) 687 *bp++ = '>'; 688 *bp++ = '\0'; 689 690 if (tTd(33, 1)) 691 printf("crackaddr=>`%s'\n", buf); 692 693 return (buf); 694 } 695 /* 696 ** PUTHEADER -- put the header part of a message from the in-core copy 697 ** 698 ** Parameters: 699 ** fp -- file to put it on. 700 ** m -- mailer to use. 701 ** e -- envelope to use. 702 ** 703 ** Returns: 704 ** none. 705 ** 706 ** Side Effects: 707 ** none. 708 */ 709 710 /* 711 * Macro for fast max (not available in e.g. DG/UX, 386/ix). 712 */ 713 #ifndef MAX 714 # define MAX(a,b) (((a)>(b))?(a):(b)) 715 #endif 716 717 putheader(fp, m, e) 718 register FILE *fp; 719 register MAILER *m; 720 register ENVELOPE *e; 721 { 722 char buf[MAX(MAXLINE,BUFSIZ)]; 723 register HDR *h; 724 char obuf[MAXLINE]; 725 726 if (tTd(34, 1)) 727 printf("--- putheader, mailer = %s ---\n", m->m_name); 728 729 for (h = e->e_header; h != NULL; h = h->h_link) 730 { 731 register char *p; 732 extern bool bitintersect(); 733 734 if (tTd(34, 11)) 735 { 736 printf(" %s: ", h->h_field); 737 xputs(h->h_value); 738 } 739 740 if (bitset(H_CHECK|H_ACHECK, h->h_flags) && 741 !bitintersect(h->h_mflags, m->m_flags)) 742 { 743 if (tTd(34, 11)) 744 printf(" (skipped)\n"); 745 continue; 746 } 747 748 /* handle Resent-... headers specially */ 749 if (bitset(H_RESENT, h->h_flags) && !bitset(EF_RESENT, e->e_flags)) 750 { 751 if (tTd(34, 11)) 752 printf(" (skipped (resent))\n"); 753 continue; 754 } 755 if (tTd(34, 11)) 756 printf("\n"); 757 758 p = h->h_value; 759 if (bitset(H_DEFAULT, h->h_flags)) 760 { 761 /* macro expand value if generated internally */ 762 expand(p, buf, &buf[sizeof buf], e); 763 p = buf; 764 if (p == NULL || *p == '\0') 765 continue; 766 } 767 768 if (bitset(H_FROM|H_RCPT, h->h_flags)) 769 { 770 /* address field */ 771 bool oldstyle = bitset(EF_OLDSTYLE, e->e_flags); 772 773 if (bitset(H_FROM, h->h_flags)) 774 oldstyle = FALSE; 775 commaize(h, p, fp, oldstyle, m, e); 776 } 777 else 778 { 779 /* vanilla header line */ 780 register char *nlp; 781 782 (void) sprintf(obuf, "%s: ", h->h_field); 783 while ((nlp = strchr(p, '\n')) != NULL) 784 { 785 *nlp = '\0'; 786 (void) strcat(obuf, p); 787 *nlp = '\n'; 788 putline(obuf, fp, m); 789 p = ++nlp; 790 obuf[0] = '\0'; 791 } 792 (void) strcat(obuf, p); 793 putline(obuf, fp, m); 794 } 795 } 796 } 797 /* 798 ** COMMAIZE -- output a header field, making a comma-translated list. 799 ** 800 ** Parameters: 801 ** h -- the header field to output. 802 ** p -- the value to put in it. 803 ** fp -- file to put it to. 804 ** oldstyle -- TRUE if this is an old style header. 805 ** m -- a pointer to the mailer descriptor. If NULL, 806 ** don't transform the name at all. 807 ** e -- the envelope containing the message. 808 ** 809 ** Returns: 810 ** none. 811 ** 812 ** Side Effects: 813 ** outputs "p" to file "fp". 814 */ 815 816 commaize(h, p, fp, oldstyle, m, e) 817 register HDR *h; 818 register char *p; 819 FILE *fp; 820 bool oldstyle; 821 register MAILER *m; 822 register ENVELOPE *e; 823 { 824 register char *obp; 825 int opos; 826 bool firstone = TRUE; 827 char obuf[MAXLINE + 3]; 828 829 /* 830 ** Output the address list translated by the 831 ** mailer and with commas. 832 */ 833 834 if (tTd(14, 2)) 835 printf("commaize(%s: %s)\n", h->h_field, p); 836 837 obp = obuf; 838 (void) sprintf(obp, "%s: ", h->h_field); 839 opos = strlen(h->h_field) + 2; 840 obp += opos; 841 842 /* 843 ** Run through the list of values. 844 */ 845 846 while (*p != '\0') 847 { 848 register char *name; 849 register int c; 850 char savechar; 851 int flags; 852 auto int stat; 853 854 /* 855 ** Find the end of the name. New style names 856 ** end with a comma, old style names end with 857 ** a space character. However, spaces do not 858 ** necessarily delimit an old-style name -- at 859 ** signs mean keep going. 860 */ 861 862 /* find end of name */ 863 while ((isascii(*p) && isspace(*p)) || *p == ',') 864 p++; 865 name = p; 866 for (;;) 867 { 868 auto char *oldp; 869 char pvpbuf[PSBUFSIZE]; 870 871 (void) prescan(p, oldstyle ? ' ' : ',', pvpbuf, &oldp); 872 p = oldp; 873 874 /* look to see if we have an at sign */ 875 while (*p != '\0' && isascii(*p) && isspace(*p)) 876 p++; 877 878 if (*p != '@') 879 { 880 p = oldp; 881 break; 882 } 883 p += *p == '@' ? 1 : 2; 884 while (*p != '\0' && isascii(*p) && isspace(*p)) 885 p++; 886 } 887 /* at the end of one complete name */ 888 889 /* strip off trailing white space */ 890 while (p >= name && 891 ((isascii(*p) && isspace(*p)) || *p == ',' || *p == '\0')) 892 p--; 893 if (++p == name) 894 continue; 895 savechar = *p; 896 *p = '\0'; 897 898 /* translate the name to be relative */ 899 flags = RF_HEADERADDR|RF_ADDDOMAIN; 900 if (bitset(H_FROM, h->h_flags)) 901 flags |= RF_SENDERADDR; 902 stat = EX_OK; 903 name = remotename(name, m, flags, &stat, e); 904 if (*name == '\0') 905 { 906 *p = savechar; 907 continue; 908 } 909 910 /* output the name with nice formatting */ 911 opos += strlen(name); 912 if (!firstone) 913 opos += 2; 914 if (opos > 78 && !firstone) 915 { 916 (void) strcpy(obp, ",\n"); 917 putline(obuf, fp, m); 918 obp = obuf; 919 (void) sprintf(obp, " "); 920 opos = strlen(obp); 921 obp += opos; 922 opos += strlen(name); 923 } 924 else if (!firstone) 925 { 926 (void) sprintf(obp, ", "); 927 obp += 2; 928 } 929 930 while ((c = *name++) != '\0' && obp < &obuf[MAXLINE]) 931 *obp++ = c; 932 firstone = FALSE; 933 *p = savechar; 934 } 935 (void) strcpy(obp, "\n"); 936 putline(obuf, fp, m); 937 } 938 /* 939 ** COPYHEADER -- copy header list 940 ** 941 ** This routine is the equivalent of newstr for header lists 942 ** 943 ** Parameters: 944 ** header -- list of header structures to copy. 945 ** 946 ** Returns: 947 ** a copy of 'header'. 948 ** 949 ** Side Effects: 950 ** none. 951 */ 952 953 HDR * 954 copyheader(header) 955 register HDR *header; 956 { 957 register HDR *newhdr; 958 HDR *ret; 959 register HDR **tail = &ret; 960 961 while (header != NULL) 962 { 963 newhdr = (HDR *) xalloc(sizeof(HDR)); 964 STRUCTCOPY(*header, *newhdr); 965 *tail = newhdr; 966 tail = &newhdr->h_link; 967 header = header->h_link; 968 } 969 *tail = NULL; 970 971 return ret; 972 } 973