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 6.34 (Berkeley) 05/11/93"; 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 extern char *macvalue(); 388 389 if (bitset(EF_RESPONSE, e->e_flags)) 390 name = "[RESPONSE]"; 391 else if ((name = macvalue('_', e)) != NULL) 392 ; 393 else if (RealHostName[0] == '[') 394 name = RealHostName; 395 else 396 { 397 extern char *anynet_ntoa(); 398 399 name = hbuf; 400 (void) sprintf(hbuf, "%.80s", RealHostName); 401 if (RealHostAddr.sa.sa_family != 0) 402 { 403 p = &hbuf[strlen(hbuf)]; 404 (void) sprintf(p, " (%s)", 405 anynet_ntoa(&RealHostAddr)); 406 } 407 } 408 409 /* some versions of syslog only take 5 printf args */ 410 sprintf(sbuf, "from=%.200s, size=%ld, class=%d, pri=%ld, nrcpts=%d, msgid=%.100s", 411 e->e_from.q_paddr, e->e_msgsize, e->e_class, 412 e->e_msgpriority, e->e_nrcpts, msgid); 413 syslog(LOG_INFO, "%s: %s, relay=%s", 414 e->e_id, sbuf, name); 415 } 416 # endif /* LOG */ 417 } 418 /* 419 ** PRIENCODE -- encode external priority names into internal values. 420 ** 421 ** Parameters: 422 ** p -- priority in ascii. 423 ** 424 ** Returns: 425 ** priority as a numeric level. 426 ** 427 ** Side Effects: 428 ** none. 429 */ 430 431 priencode(p) 432 char *p; 433 { 434 register int i; 435 436 for (i = 0; i < NumPriorities; i++) 437 { 438 if (!strcasecmp(p, Priorities[i].pri_name)) 439 return (Priorities[i].pri_val); 440 } 441 442 /* unknown priority */ 443 return (0); 444 } 445 /* 446 ** CRACKADDR -- parse an address and turn it into a macro 447 ** 448 ** This doesn't actually parse the address -- it just extracts 449 ** it and replaces it with "$g". The parse is totally ad hoc 450 ** and isn't even guaranteed to leave something syntactically 451 ** identical to what it started with. However, it does leave 452 ** something semantically identical. 453 ** 454 ** This algorithm has been cleaned up to handle a wider range 455 ** of cases -- notably quoted and backslash escaped strings. 456 ** This modification makes it substantially better at preserving 457 ** the original syntax. 458 ** 459 ** Parameters: 460 ** addr -- the address to be cracked. 461 ** 462 ** Returns: 463 ** a pointer to the new version. 464 ** 465 ** Side Effects: 466 ** none. 467 ** 468 ** Warning: 469 ** The return value is saved in local storage and should 470 ** be copied if it is to be reused. 471 */ 472 473 char * 474 crackaddr(addr) 475 register char *addr; 476 { 477 register char *p; 478 register char c; 479 int cmtlev; 480 int realcmtlev; 481 int anglelev, realanglelev; 482 int copylev; 483 bool qmode; 484 bool realqmode; 485 bool skipping; 486 bool putgmac = FALSE; 487 bool quoteit = FALSE; 488 register char *bp; 489 char *buflim; 490 static char buf[MAXNAME]; 491 492 if (tTd(33, 1)) 493 printf("crackaddr(%s)\n", addr); 494 495 /* strip leading spaces */ 496 while (*addr != '\0' && isascii(*addr) && isspace(*addr)) 497 addr++; 498 499 /* 500 ** Start by assuming we have no angle brackets. This will be 501 ** adjusted later if we find them. 502 */ 503 504 bp = buf; 505 buflim = &buf[sizeof buf - 5]; 506 p = addr; 507 copylev = anglelev = realanglelev = cmtlev = realcmtlev = 0; 508 qmode = realqmode = FALSE; 509 510 while ((c = *p++) != '\0') 511 { 512 /* 513 ** If the buffer is overful, go into a special "skipping" 514 ** mode that tries to keep legal syntax but doesn't actually 515 ** output things. 516 */ 517 518 skipping = bp >= buflim; 519 520 if (copylev > 0 && !skipping) 521 *bp++ = c; 522 523 /* check for backslash escapes */ 524 if (c == '\\') 525 { 526 /* arrange to quote the address */ 527 if (cmtlev <= 0 && !qmode) 528 quoteit = TRUE; 529 530 if ((c = *p++) == '\0') 531 { 532 /* too far */ 533 p--; 534 goto putg; 535 } 536 if (copylev > 0 && !skipping) 537 *bp++ = c; 538 goto putg; 539 } 540 541 /* check for quoted strings */ 542 if (c == '"') 543 { 544 qmode = !qmode; 545 if (copylev > 0 && !skipping) 546 realqmode = !realqmode; 547 continue; 548 } 549 if (qmode) 550 goto putg; 551 552 /* check for comments */ 553 if (c == '(') 554 { 555 cmtlev++; 556 557 /* allow space for closing paren */ 558 if (!skipping) 559 { 560 buflim--; 561 realcmtlev++; 562 if (copylev++ <= 0) 563 { 564 *bp++ = ' '; 565 *bp++ = c; 566 } 567 } 568 } 569 if (cmtlev > 0) 570 { 571 if (c == ')') 572 { 573 cmtlev--; 574 copylev--; 575 if (!skipping) 576 { 577 realcmtlev--; 578 buflim++; 579 } 580 } 581 continue; 582 } 583 else if (c == ')') 584 { 585 /* syntax error: unmatched ) */ 586 if (!skipping) 587 bp--; 588 } 589 590 591 /* check for characters that may have to be quoted */ 592 if (strchr(".'@,;:\\()", c) != NULL) 593 { 594 /* 595 ** If these occur as the phrase part of a <> 596 ** construct, but are not inside of () or already 597 ** quoted, they will have to be quoted. Note that 598 ** now (but don't actually do the quoting). 599 */ 600 601 if (cmtlev <= 0 && !qmode) 602 quoteit = TRUE; 603 } 604 605 /* check for angle brackets */ 606 if (c == '<') 607 { 608 register char *q; 609 610 /* oops -- have to change our mind */ 611 anglelev++; 612 if (!skipping) 613 realanglelev++; 614 615 bp = buf; 616 if (quoteit) 617 { 618 *bp++ = '"'; 619 620 /* back up over the '<' and any spaces */ 621 --p; 622 while (isascii(*--p) && isspace(*p)) 623 continue; 624 p++; 625 } 626 for (q = addr; q < p; ) 627 { 628 c = *q++; 629 if (bp < buflim) 630 { 631 if (quoteit && c == '"') 632 *bp++ = '\\'; 633 *bp++ = c; 634 } 635 } 636 if (quoteit) 637 { 638 *bp++ = '"'; 639 while ((c = *p++) != '<') 640 { 641 if (bp < buflim) 642 *bp++ = c; 643 } 644 *bp++ = c; 645 } 646 copylev = 0; 647 putgmac = quoteit = FALSE; 648 continue; 649 } 650 651 if (c == '>') 652 { 653 if (anglelev > 0) 654 { 655 anglelev--; 656 if (!skipping) 657 { 658 realanglelev--; 659 buflim++; 660 } 661 } 662 else if (!skipping) 663 { 664 /* syntax error: unmatched > */ 665 if (copylev > 0) 666 bp--; 667 continue; 668 } 669 if (copylev++ <= 0) 670 *bp++ = c; 671 continue; 672 } 673 674 /* must be a real address character */ 675 putg: 676 if (copylev <= 0 && !putgmac) 677 { 678 *bp++ = MACROEXPAND; 679 *bp++ = 'g'; 680 putgmac = TRUE; 681 } 682 } 683 684 /* repair any syntactic damage */ 685 if (realqmode) 686 *bp++ = '"'; 687 while (realcmtlev-- > 0) 688 *bp++ = ')'; 689 while (realanglelev-- > 0) 690 *bp++ = '>'; 691 *bp++ = '\0'; 692 693 if (tTd(33, 1)) 694 printf("crackaddr=>`%s'\n", buf); 695 696 return (buf); 697 } 698 /* 699 ** PUTHEADER -- put the header part of a message from the in-core copy 700 ** 701 ** Parameters: 702 ** fp -- file to put it on. 703 ** m -- mailer to use. 704 ** e -- envelope to use. 705 ** 706 ** Returns: 707 ** none. 708 ** 709 ** Side Effects: 710 ** none. 711 */ 712 713 /* 714 * Macro for fast max (not available in e.g. DG/UX, 386/ix). 715 */ 716 #ifndef MAX 717 # define MAX(a,b) (((a)>(b))?(a):(b)) 718 #endif 719 720 putheader(fp, m, e) 721 register FILE *fp; 722 register MAILER *m; 723 register ENVELOPE *e; 724 { 725 char buf[MAX(MAXLINE,BUFSIZ)]; 726 register HDR *h; 727 char obuf[MAXLINE]; 728 729 if (tTd(34, 1)) 730 printf("--- putheader, mailer = %s ---\n", m->m_name); 731 732 for (h = e->e_header; h != NULL; h = h->h_link) 733 { 734 register char *p; 735 extern bool bitintersect(); 736 737 if (tTd(34, 11)) 738 { 739 printf(" %s: ", h->h_field); 740 xputs(h->h_value); 741 } 742 743 if (bitset(H_CHECK|H_ACHECK, h->h_flags) && 744 !bitintersect(h->h_mflags, m->m_flags)) 745 { 746 if (tTd(34, 11)) 747 printf(" (skipped)\n"); 748 continue; 749 } 750 751 /* handle Resent-... headers specially */ 752 if (bitset(H_RESENT, h->h_flags) && !bitset(EF_RESENT, e->e_flags)) 753 { 754 if (tTd(34, 11)) 755 printf(" (skipped (resent))\n"); 756 continue; 757 } 758 if (tTd(34, 11)) 759 printf("\n"); 760 761 p = h->h_value; 762 if (bitset(H_DEFAULT, h->h_flags)) 763 { 764 /* macro expand value if generated internally */ 765 expand(p, buf, &buf[sizeof buf], e); 766 p = buf; 767 if (p == NULL || *p == '\0') 768 continue; 769 } 770 771 if (bitset(H_FROM|H_RCPT, h->h_flags)) 772 { 773 /* address field */ 774 bool oldstyle = bitset(EF_OLDSTYLE, e->e_flags); 775 776 if (bitset(H_FROM, h->h_flags)) 777 oldstyle = FALSE; 778 commaize(h, p, fp, oldstyle, m, e); 779 } 780 else 781 { 782 /* vanilla header line */ 783 register char *nlp; 784 785 (void) sprintf(obuf, "%s: ", h->h_field); 786 while ((nlp = strchr(p, '\n')) != NULL) 787 { 788 *nlp = '\0'; 789 (void) strcat(obuf, p); 790 *nlp = '\n'; 791 putline(obuf, fp, m); 792 p = ++nlp; 793 obuf[0] = '\0'; 794 } 795 (void) strcat(obuf, p); 796 putline(obuf, fp, m); 797 } 798 } 799 } 800 /* 801 ** COMMAIZE -- output a header field, making a comma-translated list. 802 ** 803 ** Parameters: 804 ** h -- the header field to output. 805 ** p -- the value to put in it. 806 ** fp -- file to put it to. 807 ** oldstyle -- TRUE if this is an old style header. 808 ** m -- a pointer to the mailer descriptor. If NULL, 809 ** don't transform the name at all. 810 ** e -- the envelope containing the message. 811 ** 812 ** Returns: 813 ** none. 814 ** 815 ** Side Effects: 816 ** outputs "p" to file "fp". 817 */ 818 819 commaize(h, p, fp, oldstyle, m, e) 820 register HDR *h; 821 register char *p; 822 FILE *fp; 823 bool oldstyle; 824 register MAILER *m; 825 register ENVELOPE *e; 826 { 827 register char *obp; 828 int opos; 829 bool firstone = TRUE; 830 char obuf[MAXLINE + 3]; 831 832 /* 833 ** Output the address list translated by the 834 ** mailer and with commas. 835 */ 836 837 if (tTd(14, 2)) 838 printf("commaize(%s: %s)\n", h->h_field, p); 839 840 obp = obuf; 841 (void) sprintf(obp, "%s: ", h->h_field); 842 opos = strlen(h->h_field) + 2; 843 obp += opos; 844 845 /* 846 ** Run through the list of values. 847 */ 848 849 while (*p != '\0') 850 { 851 register char *name; 852 register int c; 853 char savechar; 854 int flags; 855 auto int stat; 856 extern char *remotename(); 857 858 /* 859 ** Find the end of the name. New style names 860 ** end with a comma, old style names end with 861 ** a space character. However, spaces do not 862 ** necessarily delimit an old-style name -- at 863 ** signs mean keep going. 864 */ 865 866 /* find end of name */ 867 while ((isascii(*p) && isspace(*p)) || *p == ',') 868 p++; 869 name = p; 870 for (;;) 871 { 872 auto char *oldp; 873 char pvpbuf[PSBUFSIZE]; 874 extern char **prescan(); 875 876 (void) prescan(p, oldstyle ? ' ' : ',', pvpbuf, &oldp); 877 p = oldp; 878 879 /* look to see if we have an at sign */ 880 while (*p != '\0' && isascii(*p) && isspace(*p)) 881 p++; 882 883 if (*p != '@') 884 { 885 p = oldp; 886 break; 887 } 888 p += *p == '@' ? 1 : 2; 889 while (*p != '\0' && isascii(*p) && isspace(*p)) 890 p++; 891 } 892 /* at the end of one complete name */ 893 894 /* strip off trailing white space */ 895 while (p >= name && 896 ((isascii(*p) && isspace(*p)) || *p == ',' || *p == '\0')) 897 p--; 898 if (++p == name) 899 continue; 900 savechar = *p; 901 *p = '\0'; 902 903 /* translate the name to be relative */ 904 flags = RF_HEADERADDR|RF_ADDDOMAIN; 905 if (bitset(H_FROM, h->h_flags)) 906 flags |= RF_SENDERADDR; 907 stat = EX_OK; 908 name = remotename(name, m, flags, &stat, e); 909 if (*name == '\0') 910 { 911 *p = savechar; 912 continue; 913 } 914 915 /* output the name with nice formatting */ 916 opos += strlen(name); 917 if (!firstone) 918 opos += 2; 919 if (opos > 78 && !firstone) 920 { 921 (void) strcpy(obp, ",\n"); 922 putline(obuf, fp, m); 923 obp = obuf; 924 (void) sprintf(obp, " "); 925 opos = strlen(obp); 926 obp += opos; 927 opos += strlen(name); 928 } 929 else if (!firstone) 930 { 931 (void) sprintf(obp, ", "); 932 obp += 2; 933 } 934 935 while ((c = *name++) != '\0' && obp < &obuf[MAXLINE]) 936 *obp++ = c; 937 firstone = FALSE; 938 *p = savechar; 939 } 940 (void) strcpy(obp, "\n"); 941 putline(obuf, fp, m); 942 } 943 /* 944 ** COPYHEADER -- copy header list 945 ** 946 ** This routine is the equivalent of newstr for header lists 947 ** 948 ** Parameters: 949 ** header -- list of header structures to copy. 950 ** 951 ** Returns: 952 ** a copy of 'header'. 953 ** 954 ** Side Effects: 955 ** none. 956 */ 957 958 HDR * 959 copyheader(header) 960 register HDR *header; 961 { 962 register HDR *newhdr; 963 HDR *ret; 964 register HDR **tail = &ret; 965 966 while (header != NULL) 967 { 968 newhdr = (HDR *) xalloc(sizeof(HDR)); 969 STRUCTCOPY(*header, *newhdr); 970 *tail = newhdr; 971 tail = &newhdr->h_link; 972 header = header->h_link; 973 } 974 *tail = NULL; 975 976 return ret; 977 } 978