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 6.23 (Berkeley) 03/19/93"; 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 makelower(fname); 84 85 /* strip field value on front */ 86 if (*fvalue == ' ') 87 fvalue++; 88 89 /* see if it is a known type */ 90 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 91 { 92 if (strcmp(hi->hi_field, fname) == 0) 93 break; 94 } 95 96 /* see if this is a resent message */ 97 if (!def && bitset(H_RESENT, hi->hi_flags)) 98 e->e_flags |= EF_RESENT; 99 100 /* if this means "end of header" quit now */ 101 if (bitset(H_EOH, hi->hi_flags)) 102 return (hi->hi_flags); 103 104 /* drop explicit From: if same as what we would generate -- for MH */ 105 p = "resent-from"; 106 if (!bitset(EF_RESENT, e->e_flags)) 107 p += 7; 108 if (!def && !bitset(EF_QUEUERUN, e->e_flags) && strcmp(fname, p) == 0) 109 { 110 if (e->e_from.q_paddr != NULL && 111 strcmp(fvalue, e->e_from.q_paddr) == 0) 112 return (hi->hi_flags); 113 } 114 115 /* delete default value for this header */ 116 for (hp = &e->e_header; (h = *hp) != NULL; hp = &h->h_link) 117 { 118 if (strcmp(fname, h->h_field) == 0 && 119 bitset(H_DEFAULT, h->h_flags) && 120 !bitset(H_FORCE, h->h_flags)) 121 h->h_value = NULL; 122 } 123 124 /* create a new node */ 125 h = (HDR *) xalloc(sizeof *h); 126 h->h_field = newstr(fname); 127 h->h_value = NULL; 128 h->h_link = NULL; 129 bcopy((char *) mopts, (char *) h->h_mflags, sizeof mopts); 130 *hp = h; 131 h->h_flags = hi->hi_flags; 132 if (def) 133 h->h_flags |= H_DEFAULT; 134 if (cond) 135 h->h_flags |= H_CHECK; 136 if (h->h_value != NULL) 137 free((char *) h->h_value); 138 h->h_value = newstr(fvalue); 139 140 /* hack to see if this is a new format message */ 141 if (!def && bitset(H_RCPT|H_FROM, h->h_flags) && 142 (strchr(fvalue, ',') != NULL || strchr(fvalue, '(') != NULL || 143 strchr(fvalue, '<') != NULL || strchr(fvalue, ';') != NULL)) 144 { 145 e->e_flags &= ~EF_OLDSTYLE; 146 } 147 148 return (h->h_flags); 149 } 150 /* 151 ** ADDHEADER -- add a header entry to the end of the queue. 152 ** 153 ** This bypasses the special checking of chompheader. 154 ** 155 ** Parameters: 156 ** field -- the name of the header field. 157 ** value -- the value of the field. It must be lower-cased. 158 ** e -- the envelope to add them to. 159 ** 160 ** Returns: 161 ** none. 162 ** 163 ** Side Effects: 164 ** adds the field on the list of headers for this envelope. 165 */ 166 167 addheader(field, value, e) 168 char *field; 169 char *value; 170 ENVELOPE *e; 171 { 172 register HDR *h; 173 register struct hdrinfo *hi; 174 HDR **hp; 175 176 /* find info struct */ 177 for (hi = HdrInfo; hi->hi_field != NULL; hi++) 178 { 179 if (strcmp(field, hi->hi_field) == 0) 180 break; 181 } 182 183 /* find current place in list -- keep back pointer? */ 184 for (hp = &e->e_header; (h = *hp) != NULL; hp = &h->h_link) 185 { 186 if (strcmp(field, h->h_field) == 0) 187 break; 188 } 189 190 /* allocate space for new header */ 191 h = (HDR *) xalloc(sizeof *h); 192 h->h_field = field; 193 h->h_value = newstr(value); 194 h->h_link = *hp; 195 h->h_flags = hi->hi_flags | H_DEFAULT; 196 clrbitmap(h->h_mflags); 197 *hp = h; 198 } 199 /* 200 ** HVALUE -- return value of a header. 201 ** 202 ** Only "real" fields (i.e., ones that have not been supplied 203 ** as a default) are used. 204 ** 205 ** Parameters: 206 ** field -- the field name. 207 ** e -- the envelope containing the header. 208 ** 209 ** Returns: 210 ** pointer to the value part. 211 ** NULL if not found. 212 ** 213 ** Side Effects: 214 ** none. 215 */ 216 217 char * 218 hvalue(field, e) 219 char *field; 220 register ENVELOPE *e; 221 { 222 register HDR *h; 223 224 for (h = e->e_header; h != NULL; h = h->h_link) 225 { 226 if (!bitset(H_DEFAULT, h->h_flags) && strcmp(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 ** 267 ** Returns: 268 ** none. 269 ** 270 ** Side Effects: 271 ** Sets a bunch of global variables from information 272 ** in the collected header. 273 ** Aborts the message if the hop count is exceeded. 274 */ 275 276 eatheader(e) 277 register ENVELOPE *e; 278 { 279 register HDR *h; 280 register char *p; 281 int hopcnt = 0; 282 char *msgid; 283 char buf[MAXLINE]; 284 285 /* 286 ** Set up macros for possible expansion in headers. 287 */ 288 289 define('f', e->e_sender, e); 290 define('g', e->e_sender, e); 291 292 if (tTd(32, 1)) 293 printf("----- collected header -----\n"); 294 msgid = "<none>"; 295 for (h = e->e_header; h != NULL; h = h->h_link) 296 { 297 extern char *capitalize(); 298 299 /* do early binding */ 300 if (bitset(H_DEFAULT, h->h_flags) && h->h_value != NULL) 301 { 302 expand(h->h_value, buf, &buf[sizeof buf], e); 303 if (buf[0] != '\0') 304 { 305 h->h_value = newstr(buf); 306 h->h_flags &= ~H_DEFAULT; 307 } 308 } 309 310 if (tTd(32, 1)) 311 printf("%s: %s\n", capitalize(h->h_field), h->h_value); 312 313 /* count the number of times it has been processed */ 314 if (bitset(H_TRACE, h->h_flags)) 315 hopcnt++; 316 317 /* send to this person if we so desire */ 318 if (GrabTo && bitset(H_RCPT, h->h_flags) && 319 !bitset(H_DEFAULT, h->h_flags) && 320 (!bitset(EF_RESENT, e->e_flags) || bitset(H_RESENT, h->h_flags))) 321 { 322 (void) sendtolist(h->h_value, (ADDRESS *) NULL, 323 &e->e_sendqueue, e); 324 } 325 326 /* save the message-id for logging */ 327 if (!bitset(EF_QUEUERUN, e->e_flags) && h->h_value != NULL && 328 strcmp(h->h_field, "message-id") == 0) 329 { 330 msgid = h->h_value; 331 } 332 333 /* see if this is a return-receipt header */ 334 if (bitset(H_RECEIPTTO, h->h_flags)) 335 e->e_receiptto = h->h_value; 336 337 /* see if this is an errors-to header */ 338 if (bitset(H_ERRORSTO, h->h_flags)) 339 (void) sendtolist(h->h_value, (ADDRESS *) NULL, 340 &e->e_errorqueue, e); 341 } 342 if (tTd(32, 1)) 343 printf("----------------------------\n"); 344 345 /* if we are just verifying (that is, sendmail -t -bv), drop out now */ 346 if (OpMode == MD_VERIFY) 347 return; 348 349 /* store hop count */ 350 if (hopcnt > e->e_hopcount) 351 e->e_hopcount = hopcnt; 352 353 /* message priority */ 354 p = hvalue("precedence", e); 355 if (p != NULL) 356 e->e_class = priencode(p); 357 if (!bitset(EF_QUEUERUN, e->e_flags)) 358 e->e_msgpriority = e->e_msgsize 359 - e->e_class * WkClassFact 360 + e->e_nrcpts * WkRecipFact; 361 362 /* full name of from person */ 363 p = hvalue("full-name", e); 364 if (p != NULL) 365 define('x', p, e); 366 367 /* date message originated */ 368 p = hvalue("posted-date", e); 369 if (p == NULL) 370 p = hvalue("date", e); 371 if (p != NULL) 372 define('a', p, e); 373 374 /* 375 ** Log collection information. 376 */ 377 378 # ifdef LOG 379 if (!bitset(EF_QUEUERUN, e->e_flags) && LogLevel > 4) 380 { 381 char *name; 382 char hbuf[MAXNAME]; 383 char sbuf[MAXLINE]; 384 385 if (bitset(EF_RESPONSE, e->e_flags)) 386 name = "[RESPONSE]"; 387 else if (RealHostName[0] == '[') 388 name = RealHostName; 389 else 390 { 391 extern char *inet_ntoa(); 392 393 name = hbuf; 394 (void)sprintf(hbuf, "%.80s (%s)", 395 RealHostName, inet_ntoa(RealHostAddr.sin_addr)); 396 } 397 398 /* some versions of syslog only take 5 printf args */ 399 sprintf(sbuf, "from=%.200s, size=%ld, class=%d, pri=%ld, nrcpts=%d, msgid=%.100s", 400 e->e_from.q_paddr, e->e_msgsize, e->e_class, 401 e->e_msgpriority, e->e_nrcpts, msgid); 402 syslog(LOG_INFO, "%s: %s, relay=%s", 403 e->e_id, sbuf, name); 404 } 405 # endif /* LOG */ 406 } 407 /* 408 ** PRIENCODE -- encode external priority names into internal values. 409 ** 410 ** Parameters: 411 ** p -- priority in ascii. 412 ** 413 ** Returns: 414 ** priority as a numeric level. 415 ** 416 ** Side Effects: 417 ** none. 418 */ 419 420 priencode(p) 421 char *p; 422 { 423 register int i; 424 425 for (i = 0; i < NumPriorities; i++) 426 { 427 if (!strcasecmp(p, Priorities[i].pri_name)) 428 return (Priorities[i].pri_val); 429 } 430 431 /* unknown priority */ 432 return (0); 433 } 434 /* 435 ** CRACKADDR -- parse an address and turn it into a macro 436 ** 437 ** This doesn't actually parse the address -- it just extracts 438 ** it and replaces it with "$g". The parse is totally ad hoc 439 ** and isn't even guaranteed to leave something syntactically 440 ** identical to what it started with. However, it does leave 441 ** something semantically identical. 442 ** 443 ** This algorithm has been cleaned up to handle a wider range 444 ** of cases -- notably quoted and backslash escaped strings. 445 ** This modification makes it substantially better at preserving 446 ** the original syntax. 447 ** 448 ** Parameters: 449 ** addr -- the address to be cracked. 450 ** 451 ** Returns: 452 ** a pointer to the new version. 453 ** 454 ** Side Effects: 455 ** none. 456 ** 457 ** Warning: 458 ** The return value is saved in local storage and should 459 ** be copied if it is to be reused. 460 */ 461 462 char * 463 crackaddr(addr) 464 register char *addr; 465 { 466 register char *p; 467 register char c; 468 int cmtlev; 469 int realcmtlev; 470 int anglelev, realanglelev; 471 int copylev; 472 bool qmode; 473 bool realqmode; 474 bool skipping; 475 bool putgmac = FALSE; 476 bool quoteit = FALSE; 477 register char *bp; 478 char *buflim; 479 static char buf[MAXNAME]; 480 481 if (tTd(33, 1)) 482 printf("crackaddr(%s)\n", addr); 483 484 /* strip leading spaces */ 485 while (*addr != '\0' && isascii(*addr) && isspace(*addr)) 486 addr++; 487 488 /* 489 ** Start by assuming we have no angle brackets. This will be 490 ** adjusted later if we find them. 491 */ 492 493 bp = buf; 494 buflim = &buf[sizeof buf - 5]; 495 p = addr; 496 copylev = anglelev = realanglelev = cmtlev = realcmtlev = 0; 497 qmode = realqmode = FALSE; 498 499 while ((c = *p++) != '\0') 500 { 501 /* 502 ** If the buffer is overful, go into a special "skipping" 503 ** mode that tries to keep legal syntax but doesn't actually 504 ** output things. 505 */ 506 507 skipping = bp >= buflim; 508 509 if (copylev > 0 && !skipping) 510 *bp++ = c; 511 512 /* check for backslash escapes */ 513 if (c == '\\') 514 { 515 if ((c = *p++) == '\0') 516 { 517 /* too far */ 518 p--; 519 goto putg; 520 } 521 if (copylev > 0 && !skipping) 522 *bp++ = c; 523 goto putg; 524 } 525 526 /* check for quoted strings */ 527 if (c == '"') 528 { 529 qmode = !qmode; 530 if (copylev > 0 && !skipping) 531 realqmode = !realqmode; 532 continue; 533 } 534 if (qmode) 535 goto putg; 536 537 /* check for comments */ 538 if (c == '(') 539 { 540 cmtlev++; 541 542 /* allow space for closing paren */ 543 if (!skipping) 544 { 545 buflim--; 546 realcmtlev++; 547 if (copylev++ <= 0) 548 { 549 *bp++ = ' '; 550 *bp++ = c; 551 } 552 } 553 } 554 if (cmtlev > 0) 555 { 556 if (c == ')') 557 { 558 cmtlev--; 559 copylev--; 560 if (!skipping) 561 { 562 realcmtlev--; 563 buflim++; 564 } 565 } 566 continue; 567 } 568 else if (c == ')') 569 { 570 /* syntax error: unmatched ) */ 571 if (!skipping) 572 bp--; 573 } 574 575 576 /* check for characters that may have to be quoted */ 577 if (strchr(".'@,;:\\()", c) != NULL) 578 { 579 /* 580 ** If these occur as the phrase part of a <> 581 ** construct, but are not inside of () or already 582 ** quoted, they will have to be quoted. Note that 583 ** now (but don't actually do the quoting). 584 */ 585 586 if (cmtlev <= 0 && !qmode) 587 quoteit = TRUE; 588 } 589 590 /* check for angle brackets */ 591 if (c == '<') 592 { 593 register char *q; 594 595 /* oops -- have to change our mind */ 596 anglelev++; 597 if (!skipping) 598 realanglelev++; 599 600 bp = buf; 601 if (quoteit) 602 { 603 *bp++ = '"'; 604 605 /* back up over the '<' and any spaces */ 606 --p; 607 while (isascii(*--p) && isspace(*p)) 608 continue; 609 p++; 610 } 611 for (q = addr; q < p; ) 612 { 613 c = *q++; 614 if (bp < buflim) 615 { 616 if (quoteit && c == '"') 617 *bp++ = '\\'; 618 *bp++ = c; 619 } 620 } 621 if (quoteit) 622 { 623 *bp++ = '"'; 624 while ((c = *p++) != '<') 625 { 626 if (bp < buflim) 627 *bp++ = c; 628 } 629 *bp++ = c; 630 } 631 copylev = 0; 632 putgmac = quoteit = FALSE; 633 continue; 634 } 635 636 if (c == '>') 637 { 638 if (anglelev > 0) 639 { 640 anglelev--; 641 if (!skipping) 642 { 643 realanglelev--; 644 buflim++; 645 } 646 } 647 else if (!skipping) 648 { 649 /* syntax error: unmatched > */ 650 if (copylev > 0) 651 bp--; 652 continue; 653 } 654 if (copylev++ <= 0) 655 *bp++ = c; 656 continue; 657 } 658 659 /* must be a real address character */ 660 putg: 661 if (copylev <= 0 && !putgmac) 662 { 663 *bp++ = MACROEXPAND; 664 *bp++ = 'g'; 665 putgmac = TRUE; 666 } 667 } 668 669 /* repair any syntactic damage */ 670 if (realqmode) 671 *bp++ = '"'; 672 while (realcmtlev-- > 0) 673 *bp++ = ')'; 674 while (realanglelev-- > 0) 675 *bp++ = '>'; 676 *bp++ = '\0'; 677 678 if (tTd(33, 1)) 679 printf("crackaddr=>`%s'\n", buf); 680 681 return (buf); 682 } 683 /* 684 ** PUTHEADER -- put the header part of a message from the in-core copy 685 ** 686 ** Parameters: 687 ** fp -- file to put it on. 688 ** m -- mailer to use. 689 ** e -- envelope to use. 690 ** 691 ** Returns: 692 ** none. 693 ** 694 ** Side Effects: 695 ** none. 696 */ 697 698 /* 699 * Macro for fast max (not available in e.g. DG/UX, 386/ix). 700 */ 701 #ifndef MAX 702 # define MAX(a,b) (((a)>(b))?(a):(b)) 703 #endif 704 705 putheader(fp, m, e) 706 register FILE *fp; 707 register MAILER *m; 708 register ENVELOPE *e; 709 { 710 char buf[MAX(MAXLINE,BUFSIZ)]; 711 register HDR *h; 712 char obuf[MAXLINE]; 713 714 for (h = e->e_header; h != NULL; h = h->h_link) 715 { 716 register char *p; 717 extern bool bitintersect(); 718 719 if (bitset(H_CHECK|H_ACHECK, h->h_flags) && 720 !bitintersect(h->h_mflags, m->m_flags)) 721 continue; 722 723 /* handle Resent-... headers specially */ 724 if (bitset(H_RESENT, h->h_flags) && !bitset(EF_RESENT, e->e_flags)) 725 continue; 726 727 p = h->h_value; 728 if (bitset(H_DEFAULT, h->h_flags)) 729 { 730 /* macro expand value if generated internally */ 731 expand(p, buf, &buf[sizeof buf], e); 732 p = buf; 733 if (p == NULL || *p == '\0') 734 continue; 735 } 736 737 if (bitset(H_FROM|H_RCPT, h->h_flags)) 738 { 739 /* address field */ 740 bool oldstyle = bitset(EF_OLDSTYLE, e->e_flags); 741 742 if (bitset(H_FROM, h->h_flags)) 743 oldstyle = FALSE; 744 commaize(h, p, fp, oldstyle, m, e); 745 } 746 else 747 { 748 /* vanilla header line */ 749 register char *nlp; 750 extern char *capitalize(); 751 752 (void) sprintf(obuf, "%s: ", capitalize(h->h_field)); 753 while ((nlp = strchr(p, '\n')) != NULL) 754 { 755 *nlp = '\0'; 756 (void) strcat(obuf, p); 757 *nlp = '\n'; 758 putline(obuf, fp, m); 759 p = ++nlp; 760 obuf[0] = '\0'; 761 } 762 (void) strcat(obuf, p); 763 putline(obuf, fp, m); 764 } 765 } 766 } 767 /* 768 ** COMMAIZE -- output a header field, making a comma-translated list. 769 ** 770 ** Parameters: 771 ** h -- the header field to output. 772 ** p -- the value to put in it. 773 ** fp -- file to put it to. 774 ** oldstyle -- TRUE if this is an old style header. 775 ** m -- a pointer to the mailer descriptor. If NULL, 776 ** don't transform the name at all. 777 ** e -- the envelope containing the message. 778 ** 779 ** Returns: 780 ** none. 781 ** 782 ** Side Effects: 783 ** outputs "p" to file "fp". 784 */ 785 786 commaize(h, p, fp, oldstyle, m, e) 787 register HDR *h; 788 register char *p; 789 FILE *fp; 790 bool oldstyle; 791 register MAILER *m; 792 register ENVELOPE *e; 793 { 794 register char *obp; 795 int opos; 796 bool firstone = TRUE; 797 char obuf[MAXLINE + 3]; 798 extern char *capitalize(); 799 800 /* 801 ** Output the address list translated by the 802 ** mailer and with commas. 803 */ 804 805 if (tTd(14, 2)) 806 printf("commaize(%s: %s)\n", h->h_field, p); 807 808 obp = obuf; 809 (void) sprintf(obp, "%s: ", capitalize(h->h_field)); 810 opos = strlen(h->h_field) + 2; 811 obp += opos; 812 813 /* 814 ** Run through the list of values. 815 */ 816 817 while (*p != '\0') 818 { 819 register char *name; 820 register int c; 821 char savechar; 822 extern char *remotename(); 823 824 /* 825 ** Find the end of the name. New style names 826 ** end with a comma, old style names end with 827 ** a space character. However, spaces do not 828 ** necessarily delimit an old-style name -- at 829 ** signs mean keep going. 830 */ 831 832 /* find end of name */ 833 while ((isascii(*p) && isspace(*p)) || *p == ',') 834 p++; 835 name = p; 836 for (;;) 837 { 838 auto char *oldp; 839 char pvpbuf[PSBUFSIZE]; 840 extern char **prescan(); 841 842 (void) prescan(p, oldstyle ? ' ' : ',', pvpbuf, &oldp); 843 p = oldp; 844 845 /* look to see if we have an at sign */ 846 while (*p != '\0' && isascii(*p) && isspace(*p)) 847 p++; 848 849 if (*p != '@') 850 { 851 p = oldp; 852 break; 853 } 854 p += *p == '@' ? 1 : 2; 855 while (*p != '\0' && isascii(*p) && isspace(*p)) 856 p++; 857 } 858 /* at the end of one complete name */ 859 860 /* strip off trailing white space */ 861 while (p >= name && 862 ((isascii(*p) && isspace(*p)) || *p == ',' || *p == '\0')) 863 p--; 864 if (++p == name) 865 continue; 866 savechar = *p; 867 *p = '\0'; 868 869 /* translate the name to be relative */ 870 name = remotename(name, m, bitset(H_FROM, h->h_flags), 871 TRUE, FALSE, TRUE, e); 872 if (*name == '\0') 873 { 874 *p = savechar; 875 continue; 876 } 877 878 /* output the name with nice formatting */ 879 opos += strlen(name); 880 if (!firstone) 881 opos += 2; 882 if (opos > 78 && !firstone) 883 { 884 (void) strcpy(obp, ",\n"); 885 putline(obuf, fp, m); 886 obp = obuf; 887 (void) sprintf(obp, " "); 888 opos = strlen(obp); 889 obp += opos; 890 opos += strlen(name); 891 } 892 else if (!firstone) 893 { 894 (void) sprintf(obp, ", "); 895 obp += 2; 896 } 897 898 /* strip off quote bits as we output */ 899 while ((c = *name++) != '\0' && obp < &obuf[MAXLINE]) 900 { 901 if (bitnset(M_7BITS, m->m_flags)) 902 c &= 0177; 903 *obp++ = c; 904 } 905 firstone = FALSE; 906 *p = savechar; 907 } 908 (void) strcpy(obp, "\n"); 909 putline(obuf, fp, m); 910 } 911 /* 912 ** COPYHEADER -- copy header list 913 ** 914 ** This routine is the equivalent of newstr for header lists 915 ** 916 ** Parameters: 917 ** header -- list of header structures to copy. 918 ** 919 ** Returns: 920 ** a copy of 'header'. 921 ** 922 ** Side Effects: 923 ** none. 924 */ 925 926 HDR * 927 copyheader(header) 928 register HDR *header; 929 { 930 register HDR *newhdr; 931 HDR *ret; 932 register HDR **tail = &ret; 933 934 while (header != NULL) 935 { 936 newhdr = (HDR *) xalloc(sizeof(HDR)); 937 STRUCTCOPY(*header, *newhdr); 938 *tail = newhdr; 939 tail = &newhdr->h_link; 940 header = header->h_link; 941 } 942 *tail = NULL; 943 944 return ret; 945 } 946