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 8.2 (Berkeley) 07/11/93"; 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 (tTd(31, 2)) 110 { 111 printf("comparing header from (%s) against default (%s or %s)\n", 112 fvalue, e->e_from.q_paddr, e->e_from.q_user); 113 } 114 if (e->e_from.q_paddr != NULL && 115 (strcmp(fvalue, e->e_from.q_paddr) == 0 || 116 strcmp(fvalue, e->e_from.q_user) == 0)) 117 return (hi->hi_flags); 118 } 119 120 /* delete default value for this header */ 121 for (hp = &e->e_header; (h = *hp) != NULL; hp = &h->h_link) 122 { 123 if (strcasecmp(fname, h->h_field) == 0 && 124 bitset(H_DEFAULT, h->h_flags) && 125 !bitset(H_FORCE, h->h_flags)) 126 h->h_value = NULL; 127 } 128 129 /* create a new node */ 130 h = (HDR *) xalloc(sizeof *h); 131 h->h_field = newstr(fname); 132 h->h_value = NULL; 133 h->h_link = NULL; 134 bcopy((char *) mopts, (char *) h->h_mflags, sizeof mopts); 135 *hp = h; 136 h->h_flags = hi->hi_flags; 137 if (def) 138 h->h_flags |= H_DEFAULT; 139 if (cond) 140 h->h_flags |= H_CHECK; 141 if (h->h_value != NULL) 142 free((char *) h->h_value); 143 h->h_value = newstr(fvalue); 144 145 /* hack to see if this is a new format message */ 146 if (!def && bitset(H_RCPT|H_FROM, h->h_flags) && 147 (strchr(fvalue, ',') != NULL || strchr(fvalue, '(') != NULL || 148 strchr(fvalue, '<') != NULL || strchr(fvalue, ';') != NULL)) 149 { 150 e->e_flags &= ~EF_OLDSTYLE; 151 } 152 153 return (h->h_flags); 154 } 155 /* 156 ** ADDHEADER -- add a header entry to the end of the queue. 157 ** 158 ** This bypasses the special checking of chompheader. 159 ** 160 ** Parameters: 161 ** field -- the name of the header field. 162 ** value -- the value of the field. 163 ** e -- the envelope to add them to. 164 ** 165 ** Returns: 166 ** none. 167 ** 168 ** Side Effects: 169 ** adds the field on the list of headers for this envelope. 170 */ 171 172 addheader(field, value, e) 173 char *field; 174 char *value; 175 ENVELOPE *e; 176 { 177 register HDR *h; 178 register struct hdrinfo *hi; 179 HDR **hp; 180 181 /* find info struct */ 182 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 183 { 184 if (strcasecmp(field, hi->hi_field) == 0) 185 break; 186 } 187 188 /* find current place in list -- keep back pointer? */ 189 for (hp = &e->e_header; (h = *hp) != NULL; hp = &h->h_link) 190 { 191 if (strcasecmp(field, h->h_field) == 0) 192 break; 193 } 194 195 /* allocate space for new header */ 196 h = (HDR *) xalloc(sizeof *h); 197 h->h_field = field; 198 h->h_value = newstr(value); 199 h->h_link = *hp; 200 h->h_flags = hi->hi_flags | H_DEFAULT; 201 clrbitmap(h->h_mflags); 202 *hp = h; 203 } 204 /* 205 ** HVALUE -- return value of a header. 206 ** 207 ** Only "real" fields (i.e., ones that have not been supplied 208 ** as a default) are used. 209 ** 210 ** Parameters: 211 ** field -- the field name. 212 ** e -- the envelope containing the header. 213 ** 214 ** Returns: 215 ** pointer to the value part. 216 ** NULL if not found. 217 ** 218 ** Side Effects: 219 ** none. 220 */ 221 222 char * 223 hvalue(field, e) 224 char *field; 225 register ENVELOPE *e; 226 { 227 register HDR *h; 228 229 for (h = e->e_header; h != NULL; h = h->h_link) 230 { 231 if (!bitset(H_DEFAULT, h->h_flags) && 232 strcasecmp(h->h_field, field) == 0) 233 return (h->h_value); 234 } 235 return (NULL); 236 } 237 /* 238 ** ISHEADER -- predicate telling if argument is a header. 239 ** 240 ** A line is a header if it has a single word followed by 241 ** optional white space followed by a colon. 242 ** 243 ** Parameters: 244 ** s -- string to check for possible headerness. 245 ** 246 ** Returns: 247 ** TRUE if s is a header. 248 ** FALSE otherwise. 249 ** 250 ** Side Effects: 251 ** none. 252 */ 253 254 bool 255 isheader(s) 256 register char *s; 257 { 258 while (*s > ' ' && *s != ':' && *s != '\0') 259 s++; 260 261 /* following technically violates RFC822 */ 262 while (isascii(*s) && isspace(*s)) 263 s++; 264 265 return (*s == ':'); 266 } 267 /* 268 ** EATHEADER -- run through the stored header and extract info. 269 ** 270 ** Parameters: 271 ** e -- the envelope to process. 272 ** full -- if set, do full processing (e.g., compute 273 ** message priority). 274 ** 275 ** Returns: 276 ** none. 277 ** 278 ** Side Effects: 279 ** Sets a bunch of global variables from information 280 ** in the collected header. 281 ** Aborts the message if the hop count is exceeded. 282 */ 283 284 eatheader(e, full) 285 register ENVELOPE *e; 286 bool full; 287 { 288 register HDR *h; 289 register char *p; 290 int hopcnt = 0; 291 char *msgid; 292 char buf[MAXLINE]; 293 294 /* 295 ** Set up macros for possible expansion in headers. 296 */ 297 298 define('f', e->e_sender, e); 299 define('g', e->e_sender, e); 300 301 if (tTd(32, 1)) 302 printf("----- collected header -----\n"); 303 msgid = "<none>"; 304 for (h = e->e_header; h != NULL; h = h->h_link) 305 { 306 /* do early binding */ 307 if (bitset(H_DEFAULT, h->h_flags) && h->h_value != NULL) 308 { 309 expand(h->h_value, buf, &buf[sizeof buf], e); 310 if (buf[0] != '\0') 311 { 312 h->h_value = newstr(buf); 313 h->h_flags &= ~H_DEFAULT; 314 } 315 } 316 317 if (tTd(32, 1)) 318 printf("%s: %s\n", h->h_field, h->h_value); 319 320 /* count the number of times it has been processed */ 321 if (bitset(H_TRACE, h->h_flags)) 322 hopcnt++; 323 324 /* send to this person if we so desire */ 325 if (GrabTo && bitset(H_RCPT, h->h_flags) && 326 !bitset(H_DEFAULT, h->h_flags) && 327 (!bitset(EF_RESENT, e->e_flags) || bitset(H_RESENT, h->h_flags))) 328 { 329 (void) sendtolist(h->h_value, (ADDRESS *) NULL, 330 &e->e_sendqueue, e); 331 } 332 333 /* save the message-id for logging */ 334 if (full && h->h_value != NULL && 335 strcasecmp(h->h_field, "message-id") == 0) 336 { 337 msgid = h->h_value; 338 while (isascii(*msgid) && isspace(*msgid)) 339 msgid++; 340 } 341 342 /* see if this is a return-receipt header */ 343 if (bitset(H_RECEIPTTO, h->h_flags)) 344 e->e_receiptto = h->h_value; 345 346 /* see if this is an errors-to header */ 347 if (UseErrorsTo && bitset(H_ERRORSTO, h->h_flags)) 348 (void) sendtolist(h->h_value, (ADDRESS *) NULL, 349 &e->e_errorqueue, e); 350 } 351 if (tTd(32, 1)) 352 printf("----------------------------\n"); 353 354 /* if we are just verifying (that is, sendmail -t -bv), drop out now */ 355 if (OpMode == MD_VERIFY) 356 return; 357 358 /* store hop count */ 359 if (hopcnt > e->e_hopcount) 360 e->e_hopcount = hopcnt; 361 362 /* message priority */ 363 p = hvalue("precedence", e); 364 if (p != NULL) 365 e->e_class = priencode(p); 366 if (full) 367 e->e_msgpriority = e->e_msgsize 368 - e->e_class * WkClassFact 369 + e->e_nrcpts * WkRecipFact; 370 371 /* full name of from person */ 372 p = hvalue("full-name", e); 373 if (p != NULL) 374 define('x', p, e); 375 376 /* date message originated */ 377 p = hvalue("posted-date", e); 378 if (p == NULL) 379 p = hvalue("date", e); 380 if (p != NULL) 381 define('a', p, e); 382 383 /* 384 ** Log collection information. 385 */ 386 387 # ifdef LOG 388 if (full && LogLevel > 4) 389 { 390 char *name; 391 register char *sbp; 392 char hbuf[MAXNAME]; 393 char sbuf[MAXLINE]; 394 395 if (bitset(EF_RESPONSE, e->e_flags)) 396 name = "[RESPONSE]"; 397 else if ((name = macvalue('_', e)) != NULL) 398 ; 399 else if (RealHostName[0] == '[') 400 name = RealHostName; 401 else 402 { 403 name = hbuf; 404 (void) sprintf(hbuf, "%.80s", RealHostName); 405 if (RealHostAddr.sa.sa_family != 0) 406 { 407 p = &hbuf[strlen(hbuf)]; 408 (void) sprintf(p, " (%s)", 409 anynet_ntoa(&RealHostAddr)); 410 } 411 } 412 413 /* some versions of syslog only take 5 printf args */ 414 sbp = sbuf; 415 sprintf(sbp, "from=%.200s, size=%ld, class=%d, pri=%ld, nrcpts=%d, msgid=%.100s", 416 e->e_from.q_paddr, e->e_msgsize, e->e_class, 417 e->e_msgpriority, e->e_nrcpts, msgid); 418 sbp += strlen(sbp); 419 if (e->e_bodytype != NULL) 420 { 421 (void) sprintf(sbp, ", bodytype=%.20s", e->e_bodytype); 422 sbp += strlen(sbp); 423 } 424 p = macvalue('r', e); 425 if (p != NULL) 426 (void) sprintf(sbp, ", proto=%.20s", p); 427 syslog(LOG_INFO, "%s: %s, relay=%s", 428 e->e_id, sbuf, name); 429 } 430 # endif /* LOG */ 431 } 432 /* 433 ** PRIENCODE -- encode external priority names into internal values. 434 ** 435 ** Parameters: 436 ** p -- priority in ascii. 437 ** 438 ** Returns: 439 ** priority as a numeric level. 440 ** 441 ** Side Effects: 442 ** none. 443 */ 444 445 priencode(p) 446 char *p; 447 { 448 register int i; 449 450 for (i = 0; i < NumPriorities; i++) 451 { 452 if (!strcasecmp(p, Priorities[i].pri_name)) 453 return (Priorities[i].pri_val); 454 } 455 456 /* unknown priority */ 457 return (0); 458 } 459 /* 460 ** CRACKADDR -- parse an address and turn it into a macro 461 ** 462 ** This doesn't actually parse the address -- it just extracts 463 ** it and replaces it with "$g". The parse is totally ad hoc 464 ** and isn't even guaranteed to leave something syntactically 465 ** identical to what it started with. However, it does leave 466 ** something semantically identical. 467 ** 468 ** This algorithm has been cleaned up to handle a wider range 469 ** of cases -- notably quoted and backslash escaped strings. 470 ** This modification makes it substantially better at preserving 471 ** the original syntax. 472 ** 473 ** Parameters: 474 ** addr -- the address to be cracked. 475 ** 476 ** Returns: 477 ** a pointer to the new version. 478 ** 479 ** Side Effects: 480 ** none. 481 ** 482 ** Warning: 483 ** The return value is saved in local storage and should 484 ** be copied if it is to be reused. 485 */ 486 487 char * 488 crackaddr(addr) 489 register char *addr; 490 { 491 register char *p; 492 register char c; 493 int cmtlev; 494 int realcmtlev; 495 int anglelev, realanglelev; 496 int copylev; 497 bool qmode; 498 bool realqmode; 499 bool skipping; 500 bool putgmac = FALSE; 501 bool quoteit = FALSE; 502 register char *bp; 503 char *buflim; 504 static char buf[MAXNAME]; 505 506 if (tTd(33, 1)) 507 printf("crackaddr(%s)\n", addr); 508 509 /* strip leading spaces */ 510 while (*addr != '\0' && isascii(*addr) && isspace(*addr)) 511 addr++; 512 513 /* 514 ** Start by assuming we have no angle brackets. This will be 515 ** adjusted later if we find them. 516 */ 517 518 bp = buf; 519 buflim = &buf[sizeof buf - 5]; 520 p = addr; 521 copylev = anglelev = realanglelev = cmtlev = realcmtlev = 0; 522 qmode = realqmode = FALSE; 523 524 while ((c = *p++) != '\0') 525 { 526 /* 527 ** If the buffer is overful, go into a special "skipping" 528 ** mode that tries to keep legal syntax but doesn't actually 529 ** output things. 530 */ 531 532 skipping = bp >= buflim; 533 534 if (copylev > 0 && !skipping) 535 *bp++ = c; 536 537 /* check for backslash escapes */ 538 if (c == '\\') 539 { 540 /* arrange to quote the address */ 541 if (cmtlev <= 0 && !qmode) 542 quoteit = TRUE; 543 544 if ((c = *p++) == '\0') 545 { 546 /* too far */ 547 p--; 548 goto putg; 549 } 550 if (copylev > 0 && !skipping) 551 *bp++ = c; 552 goto putg; 553 } 554 555 /* check for quoted strings */ 556 if (c == '"') 557 { 558 qmode = !qmode; 559 if (copylev > 0 && !skipping) 560 realqmode = !realqmode; 561 continue; 562 } 563 if (qmode) 564 goto putg; 565 566 /* check for comments */ 567 if (c == '(') 568 { 569 cmtlev++; 570 571 /* allow space for closing paren */ 572 if (!skipping) 573 { 574 buflim--; 575 realcmtlev++; 576 if (copylev++ <= 0) 577 { 578 *bp++ = ' '; 579 *bp++ = c; 580 } 581 } 582 } 583 if (cmtlev > 0) 584 { 585 if (c == ')') 586 { 587 cmtlev--; 588 copylev--; 589 if (!skipping) 590 { 591 realcmtlev--; 592 buflim++; 593 } 594 } 595 continue; 596 } 597 else if (c == ')') 598 { 599 /* syntax error: unmatched ) */ 600 if (!skipping) 601 bp--; 602 } 603 604 605 /* check for characters that may have to be quoted */ 606 if (strchr(".'@,;:\\()", c) != NULL) 607 { 608 /* 609 ** If these occur as the phrase part of a <> 610 ** construct, but are not inside of () or already 611 ** quoted, they will have to be quoted. Note that 612 ** now (but don't actually do the quoting). 613 */ 614 615 if (cmtlev <= 0 && !qmode) 616 quoteit = TRUE; 617 } 618 619 /* check for angle brackets */ 620 if (c == '<') 621 { 622 register char *q; 623 624 /* oops -- have to change our mind */ 625 anglelev++; 626 if (!skipping) 627 realanglelev++; 628 629 bp = buf; 630 if (quoteit) 631 { 632 *bp++ = '"'; 633 634 /* back up over the '<' and any spaces */ 635 --p; 636 while (isascii(*--p) && isspace(*p)) 637 continue; 638 p++; 639 } 640 for (q = addr; q < p; ) 641 { 642 c = *q++; 643 if (bp < buflim) 644 { 645 if (quoteit && c == '"') 646 *bp++ = '\\'; 647 *bp++ = c; 648 } 649 } 650 if (quoteit) 651 { 652 *bp++ = '"'; 653 while ((c = *p++) != '<') 654 { 655 if (bp < buflim) 656 *bp++ = c; 657 } 658 *bp++ = c; 659 } 660 copylev = 0; 661 putgmac = quoteit = FALSE; 662 continue; 663 } 664 665 if (c == '>') 666 { 667 if (anglelev > 0) 668 { 669 anglelev--; 670 if (!skipping) 671 { 672 realanglelev--; 673 buflim++; 674 } 675 } 676 else if (!skipping) 677 { 678 /* syntax error: unmatched > */ 679 if (copylev > 0) 680 bp--; 681 continue; 682 } 683 if (copylev++ <= 0) 684 *bp++ = c; 685 continue; 686 } 687 688 /* must be a real address character */ 689 putg: 690 if (copylev <= 0 && !putgmac) 691 { 692 *bp++ = MACROEXPAND; 693 *bp++ = 'g'; 694 putgmac = TRUE; 695 } 696 } 697 698 /* repair any syntactic damage */ 699 if (realqmode) 700 *bp++ = '"'; 701 while (realcmtlev-- > 0) 702 *bp++ = ')'; 703 while (realanglelev-- > 0) 704 *bp++ = '>'; 705 *bp++ = '\0'; 706 707 if (tTd(33, 1)) 708 printf("crackaddr=>`%s'\n", buf); 709 710 return (buf); 711 } 712 /* 713 ** PUTHEADER -- put the header part of a message from the in-core copy 714 ** 715 ** Parameters: 716 ** fp -- file to put it on. 717 ** m -- mailer to use. 718 ** e -- envelope to use. 719 ** 720 ** Returns: 721 ** none. 722 ** 723 ** Side Effects: 724 ** none. 725 */ 726 727 /* 728 * Macro for fast max (not available in e.g. DG/UX, 386/ix). 729 */ 730 #ifndef MAX 731 # define MAX(a,b) (((a)>(b))?(a):(b)) 732 #endif 733 734 putheader(fp, m, e) 735 register FILE *fp; 736 register MAILER *m; 737 register ENVELOPE *e; 738 { 739 char buf[MAX(MAXLINE,BUFSIZ)]; 740 register HDR *h; 741 char obuf[MAXLINE]; 742 743 if (tTd(34, 1)) 744 printf("--- putheader, mailer = %s ---\n", m->m_name); 745 746 for (h = e->e_header; h != NULL; h = h->h_link) 747 { 748 register char *p; 749 extern bool bitintersect(); 750 751 if (tTd(34, 11)) 752 { 753 printf(" %s: ", h->h_field); 754 xputs(h->h_value); 755 } 756 757 if (bitset(H_CHECK|H_ACHECK, h->h_flags) && 758 !bitintersect(h->h_mflags, m->m_flags)) 759 { 760 if (tTd(34, 11)) 761 printf(" (skipped)\n"); 762 continue; 763 } 764 765 /* handle Resent-... headers specially */ 766 if (bitset(H_RESENT, h->h_flags) && !bitset(EF_RESENT, e->e_flags)) 767 { 768 if (tTd(34, 11)) 769 printf(" (skipped (resent))\n"); 770 continue; 771 } 772 if (tTd(34, 11)) 773 printf("\n"); 774 775 p = h->h_value; 776 if (bitset(H_DEFAULT, h->h_flags)) 777 { 778 /* macro expand value if generated internally */ 779 expand(p, buf, &buf[sizeof buf], e); 780 p = buf; 781 if (p == NULL || *p == '\0') 782 continue; 783 } 784 785 if (bitset(H_FROM|H_RCPT, h->h_flags)) 786 { 787 /* address field */ 788 bool oldstyle = bitset(EF_OLDSTYLE, e->e_flags); 789 790 if (bitset(H_FROM, h->h_flags)) 791 oldstyle = FALSE; 792 commaize(h, p, fp, oldstyle, m, e); 793 } 794 else 795 { 796 /* vanilla header line */ 797 register char *nlp; 798 799 (void) sprintf(obuf, "%s: ", h->h_field); 800 while ((nlp = strchr(p, '\n')) != NULL) 801 { 802 *nlp = '\0'; 803 (void) strcat(obuf, p); 804 *nlp = '\n'; 805 putline(obuf, fp, m); 806 p = ++nlp; 807 obuf[0] = '\0'; 808 } 809 (void) strcat(obuf, p); 810 putline(obuf, fp, m); 811 } 812 } 813 } 814 /* 815 ** COMMAIZE -- output a header field, making a comma-translated list. 816 ** 817 ** Parameters: 818 ** h -- the header field to output. 819 ** p -- the value to put in it. 820 ** fp -- file to put it to. 821 ** oldstyle -- TRUE if this is an old style header. 822 ** m -- a pointer to the mailer descriptor. If NULL, 823 ** don't transform the name at all. 824 ** e -- the envelope containing the message. 825 ** 826 ** Returns: 827 ** none. 828 ** 829 ** Side Effects: 830 ** outputs "p" to file "fp". 831 */ 832 833 commaize(h, p, fp, oldstyle, m, e) 834 register HDR *h; 835 register char *p; 836 FILE *fp; 837 bool oldstyle; 838 register MAILER *m; 839 register ENVELOPE *e; 840 { 841 register char *obp; 842 int opos; 843 bool firstone = TRUE; 844 char obuf[MAXLINE + 3]; 845 846 /* 847 ** Output the address list translated by the 848 ** mailer and with commas. 849 */ 850 851 if (tTd(14, 2)) 852 printf("commaize(%s: %s)\n", h->h_field, p); 853 854 obp = obuf; 855 (void) sprintf(obp, "%s: ", h->h_field); 856 opos = strlen(h->h_field) + 2; 857 obp += opos; 858 859 /* 860 ** Run through the list of values. 861 */ 862 863 while (*p != '\0') 864 { 865 register char *name; 866 register int c; 867 char savechar; 868 int flags; 869 auto int stat; 870 871 /* 872 ** Find the end of the name. New style names 873 ** end with a comma, old style names end with 874 ** a space character. However, spaces do not 875 ** necessarily delimit an old-style name -- at 876 ** signs mean keep going. 877 */ 878 879 /* find end of name */ 880 while ((isascii(*p) && isspace(*p)) || *p == ',') 881 p++; 882 name = p; 883 for (;;) 884 { 885 auto char *oldp; 886 char pvpbuf[PSBUFSIZE]; 887 888 (void) prescan(p, oldstyle ? ' ' : ',', pvpbuf, &oldp); 889 p = oldp; 890 891 /* look to see if we have an at sign */ 892 while (*p != '\0' && isascii(*p) && isspace(*p)) 893 p++; 894 895 if (*p != '@') 896 { 897 p = oldp; 898 break; 899 } 900 p += *p == '@' ? 1 : 2; 901 while (*p != '\0' && isascii(*p) && isspace(*p)) 902 p++; 903 } 904 /* at the end of one complete name */ 905 906 /* strip off trailing white space */ 907 while (p >= name && 908 ((isascii(*p) && isspace(*p)) || *p == ',' || *p == '\0')) 909 p--; 910 if (++p == name) 911 continue; 912 savechar = *p; 913 *p = '\0'; 914 915 /* translate the name to be relative */ 916 flags = RF_HEADERADDR|RF_ADDDOMAIN; 917 if (bitset(H_FROM, h->h_flags)) 918 flags |= RF_SENDERADDR; 919 stat = EX_OK; 920 name = remotename(name, m, flags, &stat, e); 921 if (*name == '\0') 922 { 923 *p = savechar; 924 continue; 925 } 926 927 /* output the name with nice formatting */ 928 opos += strlen(name); 929 if (!firstone) 930 opos += 2; 931 if (opos > 78 && !firstone) 932 { 933 (void) strcpy(obp, ",\n"); 934 putline(obuf, fp, m); 935 obp = obuf; 936 (void) sprintf(obp, " "); 937 opos = strlen(obp); 938 obp += opos; 939 opos += strlen(name); 940 } 941 else if (!firstone) 942 { 943 (void) sprintf(obp, ", "); 944 obp += 2; 945 } 946 947 while ((c = *name++) != '\0' && obp < &obuf[MAXLINE]) 948 *obp++ = c; 949 firstone = FALSE; 950 *p = savechar; 951 } 952 (void) strcpy(obp, "\n"); 953 putline(obuf, fp, m); 954 } 955 /* 956 ** COPYHEADER -- copy header list 957 ** 958 ** This routine is the equivalent of newstr for header lists 959 ** 960 ** Parameters: 961 ** header -- list of header structures to copy. 962 ** 963 ** Returns: 964 ** a copy of 'header'. 965 ** 966 ** Side Effects: 967 ** none. 968 */ 969 970 HDR * 971 copyheader(header) 972 register HDR *header; 973 { 974 register HDR *newhdr; 975 HDR *ret; 976 register HDR **tail = &ret; 977 978 while (header != NULL) 979 { 980 newhdr = (HDR *) xalloc(sizeof(HDR)); 981 STRUCTCOPY(*header, *newhdr); 982 *tail = newhdr; 983 tail = &newhdr->h_link; 984 header = header->h_link; 985 } 986 *tail = NULL; 987 988 return ret; 989 } 990