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[] = "@(#)parseaddr.c 6.60 (Berkeley) 06/05/93"; 11 #endif /* not lint */ 12 13 # include "sendmail.h" 14 15 /* 16 ** PARSEADDR -- Parse an address 17 ** 18 ** Parses an address and breaks it up into three parts: a 19 ** net to transmit the message on, the host to transmit it 20 ** to, and a user on that host. These are loaded into an 21 ** ADDRESS header with the values squirreled away if necessary. 22 ** The "user" part may not be a real user; the process may 23 ** just reoccur on that machine. For example, on a machine 24 ** with an arpanet connection, the address 25 ** csvax.bill@berkeley 26 ** will break up to a "user" of 'csvax.bill' and a host 27 ** of 'berkeley' -- to be transmitted over the arpanet. 28 ** 29 ** Parameters: 30 ** addr -- the address to parse. 31 ** a -- a pointer to the address descriptor buffer. 32 ** If NULL, a header will be created. 33 ** copyf -- determines what shall be copied: 34 ** -1 -- don't copy anything. The printname 35 ** (q_paddr) is just addr, and the 36 ** user & host are allocated internally 37 ** to parse. 38 ** 0 -- copy out the parsed user & host, but 39 ** don't copy the printname. 40 ** +1 -- copy everything. 41 ** delim -- the character to terminate the address, passed 42 ** to prescan. 43 ** delimptr -- if non-NULL, set to the location of the 44 ** delim character that was found. 45 ** e -- the envelope that will contain this address. 46 ** 47 ** Returns: 48 ** A pointer to the address descriptor header (`a' if 49 ** `a' is non-NULL). 50 ** NULL on error. 51 ** 52 ** Side Effects: 53 ** none 54 */ 55 56 /* following delimiters are inherent to the internal algorithms */ 57 # define DELIMCHARS "()<>,;\r\n" /* default word delimiters */ 58 59 ADDRESS * 60 parseaddr(addr, a, copyf, delim, delimptr, e) 61 char *addr; 62 register ADDRESS *a; 63 int copyf; 64 int delim; 65 char **delimptr; 66 register ENVELOPE *e; 67 { 68 register char **pvp; 69 auto char *delimptrbuf; 70 bool queueup; 71 char pvpbuf[PSBUFSIZE]; 72 extern ADDRESS *buildaddr(); 73 extern bool invalidaddr(); 74 75 /* 76 ** Initialize and prescan address. 77 */ 78 79 e->e_to = addr; 80 if (tTd(20, 1)) 81 printf("\n--parseaddr(%s)\n", addr); 82 83 if (invalidaddr(addr)) 84 { 85 if (tTd(20, 1)) 86 printf("parseaddr-->bad address\n"); 87 return NULL; 88 } 89 90 if (delimptr == NULL) 91 delimptr = &delimptrbuf; 92 93 pvp = prescan(addr, delim, pvpbuf, delimptr); 94 if (pvp == NULL) 95 { 96 if (tTd(20, 1)) 97 printf("parseaddr-->NULL\n"); 98 return (NULL); 99 } 100 101 /* 102 ** Apply rewriting rules. 103 ** Ruleset 0 does basic parsing. It must resolve. 104 */ 105 106 queueup = FALSE; 107 if (rewrite(pvp, 3, e) == EX_TEMPFAIL) 108 queueup = TRUE; 109 if (rewrite(pvp, 0, e) == EX_TEMPFAIL) 110 queueup = TRUE; 111 112 /* 113 ** See if we resolved to a real mailer. 114 */ 115 116 if (pvp[0] == NULL || (pvp[0][0] & 0377) != CANONNET) 117 { 118 setstat(EX_USAGE); 119 syserr("554 cannot resolve name"); 120 return (NULL); 121 } 122 123 /* 124 ** Build canonical address from pvp. 125 */ 126 127 a = buildaddr(pvp, a, e); 128 if (a == NULL) 129 return (NULL); 130 131 /* 132 ** Make local copies of the host & user and then 133 ** transport them out. 134 */ 135 136 allocaddr(a, copyf, addr, *delimptr); 137 138 /* 139 ** If there was a parsing failure, mark it for queueing. 140 */ 141 142 if (queueup) 143 { 144 char *msg = "Transient parse error -- message queued for future delivery"; 145 146 if (tTd(20, 1)) 147 printf("parseaddr: queuing message\n"); 148 message(msg); 149 if (e->e_message == NULL) 150 e->e_message = newstr(msg); 151 a->q_flags |= QQUEUEUP; 152 } 153 154 /* 155 ** Compute return value. 156 */ 157 158 if (tTd(20, 1)) 159 { 160 printf("parseaddr-->"); 161 printaddr(a, FALSE); 162 } 163 164 return (a); 165 } 166 /* 167 ** INVALIDADDR -- check for address containing meta-characters 168 ** 169 ** Parameters: 170 ** addr -- the address to check. 171 ** 172 ** Returns: 173 ** TRUE -- if the address has any "wierd" characters 174 ** FALSE -- otherwise. 175 */ 176 177 bool 178 invalidaddr(addr) 179 register char *addr; 180 { 181 for (; *addr != '\0'; addr++) 182 { 183 if ((*addr & 0340) != 0200) 184 continue; 185 setstat(EX_USAGE); 186 usrerr("553 Address contained invalid control characters"); 187 return TRUE; 188 } 189 return FALSE; 190 } 191 /* 192 ** ALLOCADDR -- do local allocations of address on demand. 193 ** 194 ** Also lowercases the host name if requested. 195 ** 196 ** Parameters: 197 ** a -- the address to reallocate. 198 ** copyf -- the copy flag (see parseaddr for description). 199 ** paddr -- the printname of the address. 200 ** delimptr -- a pointer to the address delimiter. Must be set. 201 ** 202 ** Returns: 203 ** none. 204 ** 205 ** Side Effects: 206 ** Copies portions of a into local buffers as requested. 207 */ 208 209 allocaddr(a, copyf, paddr, delimptr) 210 register ADDRESS *a; 211 int copyf; 212 char *paddr; 213 char *delimptr; 214 { 215 if (tTd(24, 4)) 216 printf("allocaddr(copyf=%d, paddr=%s)\n", copyf, paddr); 217 218 if (copyf > 0 && paddr != NULL) 219 { 220 char savec = *delimptr; 221 222 if (savec != '\0') 223 *delimptr = '\0'; 224 a->q_paddr = newstr(paddr); 225 if (savec != '\0') 226 *delimptr = savec; 227 } 228 else 229 a->q_paddr = paddr; 230 231 if (a->q_user == NULL) 232 a->q_user = ""; 233 if (a->q_host == NULL) 234 a->q_host = ""; 235 236 if (copyf >= 0) 237 { 238 a->q_host = newstr(a->q_host); 239 if (a->q_user != a->q_paddr) 240 a->q_user = newstr(a->q_user); 241 } 242 243 if (a->q_paddr == NULL) 244 a->q_paddr = a->q_user; 245 } 246 /* 247 ** PRESCAN -- Prescan name and make it canonical 248 ** 249 ** Scans a name and turns it into a set of tokens. This process 250 ** deletes blanks and comments (in parentheses). 251 ** 252 ** This routine knows about quoted strings and angle brackets. 253 ** 254 ** There are certain subtleties to this routine. The one that 255 ** comes to mind now is that backslashes on the ends of names 256 ** are silently stripped off; this is intentional. The problem 257 ** is that some versions of sndmsg (like at LBL) set the kill 258 ** character to something other than @ when reading addresses; 259 ** so people type "csvax.eric\@berkeley" -- which screws up the 260 ** berknet mailer. 261 ** 262 ** Parameters: 263 ** addr -- the name to chomp. 264 ** delim -- the delimiter for the address, normally 265 ** '\0' or ','; \0 is accepted in any case. 266 ** If '\t' then we are reading the .cf file. 267 ** pvpbuf -- place to put the saved text -- note that 268 ** the pointers are static. 269 ** delimptr -- if non-NULL, set to the location of the 270 ** terminating delimiter. 271 ** 272 ** Returns: 273 ** A pointer to a vector of tokens. 274 ** NULL on error. 275 */ 276 277 /* states and character types */ 278 # define OPR 0 /* operator */ 279 # define ATM 1 /* atom */ 280 # define QST 2 /* in quoted string */ 281 # define SPC 3 /* chewing up spaces */ 282 # define ONE 4 /* pick up one character */ 283 284 # define NSTATES 5 /* number of states */ 285 # define TYPE 017 /* mask to select state type */ 286 287 /* meta bits for table */ 288 # define M 020 /* meta character; don't pass through */ 289 # define B 040 /* cause a break */ 290 # define MB M|B /* meta-break */ 291 292 static short StateTab[NSTATES][NSTATES] = 293 { 294 /* oldst chtype> OPR ATM QST SPC ONE */ 295 /*OPR*/ OPR|B, ATM|B, QST|B, SPC|MB, ONE|B, 296 /*ATM*/ OPR|B, ATM, QST|B, SPC|MB, ONE|B, 297 /*QST*/ QST, QST, OPR, QST, QST, 298 /*SPC*/ OPR, ATM, QST, SPC|M, ONE, 299 /*ONE*/ OPR, OPR, OPR, OPR, OPR, 300 }; 301 302 # define NOCHAR -1 /* signal nothing in lookahead token */ 303 304 char ** 305 prescan(addr, delim, pvpbuf, delimptr) 306 char *addr; 307 char delim; 308 char pvpbuf[]; 309 char **delimptr; 310 { 311 register char *p; 312 register char *q; 313 register int c; 314 char **avp; 315 bool bslashmode; 316 int cmntcnt; 317 int anglecnt; 318 char *tok; 319 int state; 320 int newstate; 321 char *saveto = CurEnv->e_to; 322 static char *av[MAXATOM+1]; 323 extern int errno; 324 325 /* make sure error messages don't have garbage on them */ 326 errno = 0; 327 328 q = pvpbuf; 329 bslashmode = FALSE; 330 cmntcnt = 0; 331 anglecnt = 0; 332 avp = av; 333 state = ATM; 334 c = NOCHAR; 335 p = addr; 336 CurEnv->e_to = p; 337 if (tTd(22, 11)) 338 { 339 printf("prescan: "); 340 xputs(p); 341 (void) putchar('\n'); 342 } 343 344 do 345 { 346 /* read a token */ 347 tok = q; 348 for (;;) 349 { 350 /* store away any old lookahead character */ 351 if (c != NOCHAR && !bslashmode) 352 { 353 /* see if there is room */ 354 if (q >= &pvpbuf[PSBUFSIZE - 5]) 355 { 356 usrerr("553 Address too long"); 357 if (delimptr != NULL) 358 *delimptr = p; 359 CurEnv->e_to = saveto; 360 return (NULL); 361 } 362 363 /* squirrel it away */ 364 *q++ = c; 365 } 366 367 /* read a new input character */ 368 c = *p++; 369 if (c == '\0') 370 { 371 /* diagnose and patch up bad syntax */ 372 if (state == QST) 373 { 374 usrerr("553 Unbalanced '\"'"); 375 c = '"'; 376 } 377 else if (cmntcnt > 0) 378 { 379 usrerr("553 Unbalanced '('"); 380 c = ')'; 381 } 382 else if (anglecnt > 0) 383 { 384 c = '>'; 385 usrerr("553 Unbalanced '<'"); 386 } 387 else 388 break; 389 390 p--; 391 } 392 else if (c == delim && anglecnt <= 0 && 393 cmntcnt <= 0 && state != QST) 394 break; 395 396 if (tTd(22, 101)) 397 printf("c=%c, s=%d; ", c, state); 398 399 /* chew up special characters */ 400 *q = '\0'; 401 if (bslashmode) 402 { 403 bslashmode = FALSE; 404 405 /* kludge \! for naive users */ 406 if (cmntcnt > 0) 407 { 408 c = NOCHAR; 409 continue; 410 } 411 else if (c != '!' || state == QST) 412 { 413 *q++ = '\\'; 414 continue; 415 } 416 } 417 418 if (c == '\\') 419 { 420 bslashmode = TRUE; 421 } 422 else if (state == QST) 423 { 424 /* do nothing, just avoid next clauses */ 425 } 426 else if (c == '(') 427 { 428 cmntcnt++; 429 c = NOCHAR; 430 } 431 else if (c == ')') 432 { 433 if (cmntcnt <= 0) 434 { 435 usrerr("553 Unbalanced ')'"); 436 if (delimptr != NULL) 437 *delimptr = p; 438 CurEnv->e_to = saveto; 439 return (NULL); 440 } 441 else 442 cmntcnt--; 443 } 444 else if (cmntcnt > 0) 445 c = NOCHAR; 446 else if (c == '<') 447 anglecnt++; 448 else if (c == '>') 449 { 450 if (anglecnt <= 0) 451 { 452 usrerr("553 Unbalanced '>'"); 453 if (delimptr != NULL) 454 *delimptr = p; 455 CurEnv->e_to = saveto; 456 return (NULL); 457 } 458 anglecnt--; 459 } 460 else if (delim == ' ' && isascii(c) && isspace(c)) 461 c = ' '; 462 463 if (c == NOCHAR) 464 continue; 465 466 /* see if this is end of input */ 467 if (c == delim && anglecnt <= 0 && state != QST) 468 break; 469 470 newstate = StateTab[state][toktype(c)]; 471 if (tTd(22, 101)) 472 printf("ns=%02o\n", newstate); 473 state = newstate & TYPE; 474 if (bitset(M, newstate)) 475 c = NOCHAR; 476 if (bitset(B, newstate)) 477 break; 478 } 479 480 /* new token */ 481 if (tok != q) 482 { 483 *q++ = '\0'; 484 if (tTd(22, 36)) 485 { 486 printf("tok="); 487 xputs(tok); 488 (void) putchar('\n'); 489 } 490 if (avp >= &av[MAXATOM]) 491 { 492 syserr("553 prescan: too many tokens"); 493 if (delimptr != NULL) 494 *delimptr = p; 495 CurEnv->e_to = saveto; 496 return (NULL); 497 } 498 *avp++ = tok; 499 } 500 } while (c != '\0' && (c != delim || anglecnt > 0)); 501 *avp = NULL; 502 p--; 503 if (delimptr != NULL) 504 *delimptr = p; 505 if (tTd(22, 12)) 506 { 507 printf("prescan==>"); 508 printav(av); 509 } 510 CurEnv->e_to = saveto; 511 if (av[0] == NULL) 512 return (NULL); 513 return (av); 514 } 515 /* 516 ** TOKTYPE -- return token type 517 ** 518 ** Parameters: 519 ** c -- the character in question. 520 ** 521 ** Returns: 522 ** Its type. 523 ** 524 ** Side Effects: 525 ** none. 526 */ 527 528 toktype(c) 529 register int c; 530 { 531 static char buf[50]; 532 static bool firstime = TRUE; 533 534 if (firstime) 535 { 536 firstime = FALSE; 537 expand("\201o", buf, &buf[sizeof buf - 1], CurEnv); 538 (void) strcat(buf, DELIMCHARS); 539 } 540 c &= 0377; 541 if (c == MATCHCLASS || c == MATCHREPL || c == MATCHNCLASS) 542 return (ONE); 543 if (c == MACRODEXPAND) 544 return (ONE); 545 if (c == '"') 546 return (QST); 547 if ((c & 0340) == 0200) 548 return (OPR); 549 if (!isascii(c)) 550 return (ATM); 551 if (isspace(c) || c == ')') 552 return (SPC); 553 if (strchr(buf, c) != NULL) 554 return (OPR); 555 return (ATM); 556 } 557 /* 558 ** REWRITE -- apply rewrite rules to token vector. 559 ** 560 ** This routine is an ordered production system. Each rewrite 561 ** rule has a LHS (called the pattern) and a RHS (called the 562 ** rewrite); 'rwr' points the the current rewrite rule. 563 ** 564 ** For each rewrite rule, 'avp' points the address vector we 565 ** are trying to match against, and 'pvp' points to the pattern. 566 ** If pvp points to a special match value (MATCHZANY, MATCHANY, 567 ** MATCHONE, MATCHCLASS, MATCHNCLASS) then the address in avp 568 ** matched is saved away in the match vector (pointed to by 'mvp'). 569 ** 570 ** When a match between avp & pvp does not match, we try to 571 ** back out. If we back up over MATCHONE, MATCHCLASS, or MATCHNCLASS 572 ** we must also back out the match in mvp. If we reach a 573 ** MATCHANY or MATCHZANY we just extend the match and start 574 ** over again. 575 ** 576 ** When we finally match, we rewrite the address vector 577 ** and try over again. 578 ** 579 ** Parameters: 580 ** pvp -- pointer to token vector. 581 ** ruleset -- the ruleset to use for rewriting. 582 ** e -- the current envelope. 583 ** 584 ** Returns: 585 ** A status code. If EX_TEMPFAIL, higher level code should 586 ** attempt recovery. 587 ** 588 ** Side Effects: 589 ** pvp is modified. 590 */ 591 592 struct match 593 { 594 char **first; /* first token matched */ 595 char **last; /* last token matched */ 596 char **pattern; /* pointer to pattern */ 597 }; 598 599 # define MAXMATCH 9 /* max params per rewrite */ 600 601 602 int 603 rewrite(pvp, ruleset, e) 604 char **pvp; 605 int ruleset; 606 register ENVELOPE *e; 607 { 608 register char *ap; /* address pointer */ 609 register char *rp; /* rewrite pointer */ 610 register char **avp; /* address vector pointer */ 611 register char **rvp; /* rewrite vector pointer */ 612 register struct match *mlp; /* cur ptr into mlist */ 613 register struct rewrite *rwr; /* pointer to current rewrite rule */ 614 int ruleno; /* current rule number */ 615 int rstat = EX_OK; /* return status */ 616 struct match mlist[MAXMATCH]; /* stores match on LHS */ 617 char *npvp[MAXATOM+1]; /* temporary space for rebuild */ 618 619 if (OpMode == MD_TEST || tTd(21, 2)) 620 { 621 printf("rewrite: ruleset %2d input:", ruleset); 622 printav(pvp); 623 } 624 if (ruleset < 0 || ruleset >= MAXRWSETS) 625 { 626 syserr("554 rewrite: illegal ruleset number %d", ruleset); 627 return EX_CONFIG; 628 } 629 if (pvp == NULL) 630 return EX_USAGE; 631 632 /* 633 ** Run through the list of rewrite rules, applying 634 ** any that match. 635 */ 636 637 ruleno = 1; 638 for (rwr = RewriteRules[ruleset]; rwr != NULL; ) 639 { 640 int loopcount = 0; 641 642 if (tTd(21, 12)) 643 { 644 printf("-----trying rule:"); 645 printav(rwr->r_lhs); 646 } 647 648 /* try to match on this rule */ 649 mlp = mlist; 650 rvp = rwr->r_lhs; 651 avp = pvp; 652 if (++loopcount > 100) 653 { 654 syserr("554 Infinite loop in ruleset %d, rule %d", 655 ruleset, ruleno); 656 if (tTd(21, 1)) 657 { 658 printf("workspace: "); 659 printav(pvp); 660 } 661 break; 662 } 663 664 while ((ap = *avp) != NULL || *rvp != NULL) 665 { 666 rp = *rvp; 667 if (tTd(21, 35)) 668 { 669 printf("ADVANCE rp="); 670 xputs(rp); 671 printf(", ap="); 672 xputs(ap); 673 printf("\n"); 674 } 675 if (rp == NULL) 676 { 677 /* end-of-pattern before end-of-address */ 678 goto backup; 679 } 680 if (ap == NULL && (*rp & 0377) != MATCHZANY && 681 (*rp & 0377) != MATCHZERO) 682 { 683 /* end-of-input with patterns left */ 684 goto backup; 685 } 686 687 switch (*rp & 0377) 688 { 689 register STAB *s; 690 char buf[MAXLINE]; 691 692 case MATCHCLASS: 693 /* match any phrase in a class */ 694 mlp->pattern = rvp; 695 mlp->first = avp; 696 extendclass: 697 ap = *avp; 698 if (ap == NULL) 699 goto backup; 700 mlp->last = avp++; 701 cataddr(mlp->first, mlp->last, buf, sizeof buf, '\0'); 702 s = stab(buf, ST_CLASS, ST_FIND); 703 if (s == NULL || !bitnset(rp[1], s->s_class)) 704 { 705 if (tTd(21, 36)) 706 { 707 printf("EXTEND rp="); 708 xputs(rp); 709 printf(", ap="); 710 xputs(ap); 711 printf("\n"); 712 } 713 goto extendclass; 714 } 715 if (tTd(21, 36)) 716 printf("CLMATCH\n"); 717 mlp++; 718 break; 719 720 case MATCHNCLASS: 721 /* match any token not in a class */ 722 s = stab(ap, ST_CLASS, ST_FIND); 723 if (s != NULL && bitnset(rp[1], s->s_class)) 724 goto backup; 725 726 /* fall through */ 727 728 case MATCHONE: 729 case MATCHANY: 730 /* match exactly one token */ 731 mlp->pattern = rvp; 732 mlp->first = avp; 733 mlp->last = avp++; 734 mlp++; 735 break; 736 737 case MATCHZANY: 738 /* match zero or more tokens */ 739 mlp->pattern = rvp; 740 mlp->first = avp; 741 mlp->last = avp - 1; 742 mlp++; 743 break; 744 745 case MATCHZERO: 746 /* match zero tokens */ 747 break; 748 749 case MACRODEXPAND: 750 /* 751 ** Match against run-time macro. 752 ** This algorithm is broken for the 753 ** general case (no recursive macros, 754 ** improper tokenization) but should 755 ** work for the usual cases. 756 */ 757 758 ap = macvalue(rp[1], e); 759 mlp->first = avp; 760 if (tTd(21, 2)) 761 printf("rewrite: LHS $&%c => \"%s\"\n", 762 rp[1], 763 ap == NULL ? "(NULL)" : ap); 764 765 if (ap == NULL) 766 break; 767 while (*ap != '\0') 768 { 769 if (*avp == NULL || 770 strncasecmp(ap, *avp, strlen(*avp)) != 0) 771 { 772 /* no match */ 773 avp = mlp->first; 774 goto backup; 775 } 776 ap += strlen(*avp++); 777 } 778 779 /* match */ 780 break; 781 782 default: 783 /* must have exact match */ 784 if (strcasecmp(rp, ap)) 785 goto backup; 786 avp++; 787 break; 788 } 789 790 /* successful match on this token */ 791 rvp++; 792 continue; 793 794 backup: 795 /* match failed -- back up */ 796 while (--mlp >= mlist) 797 { 798 rvp = mlp->pattern; 799 rp = *rvp; 800 avp = mlp->last + 1; 801 ap = *avp; 802 803 if (tTd(21, 36)) 804 { 805 printf("BACKUP rp="); 806 xputs(rp); 807 printf(", ap="); 808 xputs(ap); 809 printf("\n"); 810 } 811 812 if (ap == NULL) 813 { 814 /* run off the end -- back up again */ 815 continue; 816 } 817 if ((*rp & 0377) == MATCHANY || 818 (*rp & 0377) == MATCHZANY) 819 { 820 /* extend binding and continue */ 821 mlp->last = avp++; 822 rvp++; 823 mlp++; 824 break; 825 } 826 if ((*rp & 0377) == MATCHCLASS) 827 { 828 /* extend binding and try again */ 829 mlp->last = avp++; 830 goto extendclass; 831 } 832 } 833 834 if (mlp < mlist) 835 { 836 /* total failure to match */ 837 break; 838 } 839 } 840 841 /* 842 ** See if we successfully matched 843 */ 844 845 if (mlp < mlist || *rvp != NULL) 846 { 847 if (tTd(21, 10)) 848 printf("----- rule fails\n"); 849 rwr = rwr->r_next; 850 ruleno++; 851 continue; 852 } 853 854 rvp = rwr->r_rhs; 855 if (tTd(21, 12)) 856 { 857 printf("-----rule matches:"); 858 printav(rvp); 859 } 860 861 rp = *rvp; 862 if ((*rp & 0377) == CANONUSER) 863 { 864 rvp++; 865 rwr = rwr->r_next; 866 ruleno++; 867 } 868 else if ((*rp & 0377) == CANONHOST) 869 { 870 rvp++; 871 rwr = NULL; 872 } 873 else if ((*rp & 0377) == CANONNET) 874 rwr = NULL; 875 876 /* substitute */ 877 for (avp = npvp; *rvp != NULL; rvp++) 878 { 879 register struct match *m; 880 register char **pp; 881 882 rp = *rvp; 883 if ((*rp & 0377) == MATCHREPL) 884 { 885 /* substitute from LHS */ 886 m = &mlist[rp[1] - '1']; 887 if (m < mlist || m >= mlp) 888 { 889 syserr("554 rewrite: ruleset %d: replacement $%c out of bounds", 890 ruleset, rp[1]); 891 return EX_CONFIG; 892 } 893 if (tTd(21, 15)) 894 { 895 printf("$%c:", rp[1]); 896 pp = m->first; 897 while (pp <= m->last) 898 { 899 printf(" %x=\"", *pp); 900 (void) fflush(stdout); 901 printf("%s\"", *pp++); 902 } 903 printf("\n"); 904 } 905 pp = m->first; 906 while (pp <= m->last) 907 { 908 if (avp >= &npvp[MAXATOM]) 909 { 910 syserr("554 rewrite: expansion too long"); 911 return EX_DATAERR; 912 } 913 *avp++ = *pp++; 914 } 915 } 916 else 917 { 918 /* vanilla replacement */ 919 if (avp >= &npvp[MAXATOM]) 920 { 921 toolong: 922 syserr("554 rewrite: expansion too long"); 923 return EX_DATAERR; 924 } 925 if ((*rp & 0377) != MACRODEXPAND) 926 *avp++ = rp; 927 else 928 { 929 *avp = macvalue(rp[1], e); 930 if (tTd(21, 2)) 931 printf("rewrite: RHS $&%c => \"%s\"\n", 932 rp[1], 933 *avp == NULL ? "(NULL)" : *avp); 934 if (*avp != NULL) 935 avp++; 936 } 937 } 938 } 939 *avp++ = NULL; 940 941 /* 942 ** Check for any hostname/keyword lookups. 943 */ 944 945 for (rvp = npvp; *rvp != NULL; rvp++) 946 { 947 char **hbrvp; 948 char **xpvp; 949 int trsize; 950 char *replac; 951 int endtoken; 952 STAB *map; 953 char *mapname; 954 char **key_rvp; 955 char **arg_rvp; 956 char **default_rvp; 957 char buf[MAXNAME + 1]; 958 char *pvpb1[MAXATOM + 1]; 959 char *argvect[10]; 960 char pvpbuf[PSBUFSIZE]; 961 962 if ((**rvp & 0377) != HOSTBEGIN && 963 (**rvp & 0377) != LOOKUPBEGIN) 964 continue; 965 966 /* 967 ** Got a hostname/keyword lookup. 968 ** 969 ** This could be optimized fairly easily. 970 */ 971 972 hbrvp = rvp; 973 if ((**rvp & 0377) == HOSTBEGIN) 974 { 975 endtoken = HOSTEND; 976 mapname = "host"; 977 } 978 else 979 { 980 endtoken = LOOKUPEND; 981 mapname = *++rvp; 982 } 983 map = stab(mapname, ST_MAP, ST_FIND); 984 if (map == NULL) 985 syserr("554 rewrite: map %s not found", mapname); 986 987 /* extract the match part */ 988 key_rvp = ++rvp; 989 default_rvp = NULL; 990 arg_rvp = argvect; 991 xpvp = NULL; 992 replac = pvpbuf; 993 while (*rvp != NULL && (**rvp & 0377) != endtoken) 994 { 995 int nodetype = **rvp & 0377; 996 997 if (nodetype != CANONHOST && nodetype != CANONUSER) 998 { 999 rvp++; 1000 continue; 1001 } 1002 1003 *rvp++ = NULL; 1004 1005 if (xpvp != NULL) 1006 { 1007 cataddr(xpvp, NULL, replac, 1008 &pvpbuf[sizeof pvpbuf] - replac, 1009 '\0'); 1010 *++arg_rvp = replac; 1011 replac += strlen(replac) + 1; 1012 xpvp = NULL; 1013 } 1014 switch (nodetype) 1015 { 1016 case CANONHOST: 1017 xpvp = rvp; 1018 break; 1019 1020 case CANONUSER: 1021 default_rvp = rvp; 1022 break; 1023 } 1024 } 1025 if (*rvp != NULL) 1026 *rvp++ = NULL; 1027 if (xpvp != NULL) 1028 { 1029 cataddr(xpvp, NULL, replac, 1030 &pvpbuf[sizeof pvpbuf] - replac, 1031 '\0'); 1032 *++arg_rvp = replac; 1033 } 1034 *++arg_rvp = NULL; 1035 1036 /* save the remainder of the input string */ 1037 trsize = (int) (avp - rvp + 1) * sizeof *rvp; 1038 bcopy((char *) rvp, (char *) pvpb1, trsize); 1039 1040 /* look it up */ 1041 cataddr(key_rvp, NULL, buf, sizeof buf, '\0'); 1042 argvect[0] = buf; 1043 if (map != NULL && bitset(MF_OPEN, map->s_map.map_mflags)) 1044 { 1045 auto int stat = EX_OK; 1046 1047 /* XXX should try to auto-open the map here */ 1048 1049 if (tTd(60, 1)) 1050 printf("map_lookup(%s, %s) => ", 1051 mapname, buf); 1052 replac = (*map->s_map.map_class->map_lookup)(&map->s_map, 1053 buf, argvect, &stat); 1054 if (tTd(60, 1)) 1055 printf("%s (%d)\n", 1056 replac ? replac : "NOT FOUND", 1057 stat); 1058 1059 /* should recover if stat == EX_TEMPFAIL */ 1060 if (stat == EX_TEMPFAIL) 1061 rstat = stat; 1062 } 1063 else 1064 replac = NULL; 1065 1066 /* if no replacement, use default */ 1067 if (replac == NULL && default_rvp != NULL) 1068 { 1069 /* create the default */ 1070 cataddr(default_rvp, NULL, buf, sizeof buf, '\0'); 1071 replac = buf; 1072 } 1073 1074 if (replac == NULL) 1075 { 1076 xpvp = key_rvp; 1077 } 1078 else 1079 { 1080 /* scan the new replacement */ 1081 xpvp = prescan(replac, '\0', pvpbuf, NULL); 1082 if (xpvp == NULL) 1083 { 1084 /* prescan already printed error */ 1085 return EX_DATAERR; 1086 } 1087 } 1088 1089 /* append it to the token list */ 1090 for (avp = hbrvp; *xpvp != NULL; xpvp++) 1091 { 1092 *avp++ = newstr(*xpvp); 1093 if (avp >= &npvp[MAXATOM]) 1094 goto toolong; 1095 } 1096 1097 /* restore the old trailing information */ 1098 for (xpvp = pvpb1; (*avp++ = *xpvp++) != NULL; ) 1099 if (avp >= &npvp[MAXATOM]) 1100 goto toolong; 1101 1102 break; 1103 } 1104 1105 /* 1106 ** Check for subroutine calls. 1107 */ 1108 1109 if (*npvp != NULL && (**npvp & 0377) == CALLSUBR) 1110 { 1111 int stat; 1112 1113 bcopy((char *) &npvp[2], (char *) pvp, 1114 (int) (avp - npvp - 2) * sizeof *avp); 1115 if (tTd(21, 3)) 1116 printf("-----callsubr %s\n", npvp[1]); 1117 stat = rewrite(pvp, atoi(npvp[1]), e); 1118 if (rstat == EX_OK || stat == EX_TEMPFAIL) 1119 rstat = stat; 1120 } 1121 else 1122 { 1123 bcopy((char *) npvp, (char *) pvp, 1124 (int) (avp - npvp) * sizeof *avp); 1125 } 1126 if (tTd(21, 4)) 1127 { 1128 printf("rewritten as:"); 1129 printav(pvp); 1130 } 1131 } 1132 1133 if (OpMode == MD_TEST || tTd(21, 2)) 1134 { 1135 printf("rewrite: ruleset %2d returns:", ruleset); 1136 printav(pvp); 1137 } 1138 1139 return rstat; 1140 } 1141 /* 1142 ** BUILDADDR -- build address from token vector. 1143 ** 1144 ** Parameters: 1145 ** tv -- token vector. 1146 ** a -- pointer to address descriptor to fill. 1147 ** If NULL, one will be allocated. 1148 ** e -- the current envelope. 1149 ** 1150 ** Returns: 1151 ** NULL if there was an error. 1152 ** 'a' otherwise. 1153 ** 1154 ** Side Effects: 1155 ** fills in 'a' 1156 */ 1157 1158 struct errcodes 1159 { 1160 char *ec_name; /* name of error code */ 1161 int ec_code; /* numeric code */ 1162 } ErrorCodes[] = 1163 { 1164 "usage", EX_USAGE, 1165 "nouser", EX_NOUSER, 1166 "nohost", EX_NOHOST, 1167 "unavailable", EX_UNAVAILABLE, 1168 "software", EX_SOFTWARE, 1169 "tempfail", EX_TEMPFAIL, 1170 "protocol", EX_PROTOCOL, 1171 #ifdef EX_CONFIG 1172 "config", EX_CONFIG, 1173 #endif 1174 NULL, EX_UNAVAILABLE, 1175 }; 1176 1177 ADDRESS * 1178 buildaddr(tv, a, e) 1179 register char **tv; 1180 register ADDRESS *a; 1181 register ENVELOPE *e; 1182 { 1183 struct mailer **mp; 1184 register struct mailer *m; 1185 char *bp; 1186 int spaceleft; 1187 static char buf[MAXNAME]; 1188 1189 if (a == NULL) 1190 a = (ADDRESS *) xalloc(sizeof *a); 1191 bzero((char *) a, sizeof *a); 1192 1193 /* figure out what net/mailer to use */ 1194 if ((**tv & 0377) != CANONNET) 1195 { 1196 syserr("554 buildaddr: no net"); 1197 return (NULL); 1198 } 1199 tv++; 1200 if (strcasecmp(*tv, "error") == 0) 1201 { 1202 if ((**++tv & 0377) == CANONHOST) 1203 { 1204 register struct errcodes *ep; 1205 1206 if (isascii(**++tv) && isdigit(**tv)) 1207 { 1208 setstat(atoi(*tv)); 1209 } 1210 else 1211 { 1212 for (ep = ErrorCodes; ep->ec_name != NULL; ep++) 1213 if (strcasecmp(ep->ec_name, *tv) == 0) 1214 break; 1215 setstat(ep->ec_code); 1216 } 1217 tv++; 1218 } 1219 if ((**tv & 0377) != CANONUSER) 1220 syserr("554 buildaddr: error: no user"); 1221 cataddr(++tv, NULL, buf, sizeof buf, ' '); 1222 stripquotes(buf); 1223 usrerr(buf); 1224 return (NULL); 1225 } 1226 1227 for (mp = Mailer; (m = *mp++) != NULL; ) 1228 { 1229 if (strcasecmp(m->m_name, *tv) == 0) 1230 break; 1231 } 1232 if (m == NULL) 1233 { 1234 syserr("554 buildaddr: unknown mailer %s", *tv); 1235 return (NULL); 1236 } 1237 a->q_mailer = m; 1238 1239 /* figure out what host (if any) */ 1240 tv++; 1241 if ((**tv & 0377) == CANONHOST) 1242 { 1243 bp = buf; 1244 spaceleft = sizeof buf - 1; 1245 while (*++tv != NULL && (**tv & 0377) != CANONUSER) 1246 { 1247 int i = strlen(*tv); 1248 1249 if (i > spaceleft) 1250 { 1251 /* out of space for this address */ 1252 if (spaceleft >= 0) 1253 syserr("554 buildaddr: host too long (%.40s...)", 1254 buf); 1255 i = spaceleft; 1256 spaceleft = 0; 1257 } 1258 if (i <= 0) 1259 continue; 1260 bcopy(*tv, bp, i); 1261 bp += i; 1262 spaceleft -= i; 1263 } 1264 *bp = '\0'; 1265 a->q_host = newstr(buf); 1266 } 1267 else 1268 { 1269 if (!bitnset(M_LOCALMAILER, m->m_flags)) 1270 { 1271 syserr("554 buildaddr: no host"); 1272 return (NULL); 1273 } 1274 a->q_host = NULL; 1275 } 1276 1277 /* figure out the user */ 1278 if (*tv == NULL || (**tv & 0377) != CANONUSER) 1279 { 1280 syserr("554 buildaddr: no user"); 1281 return (NULL); 1282 } 1283 tv++; 1284 1285 /* do special mapping for local mailer */ 1286 if (m == LocalMailer && *tv != NULL) 1287 { 1288 register char *p = *tv; 1289 1290 if (*p == '"') 1291 p++; 1292 if (*p == '|') 1293 a->q_mailer = m = ProgMailer; 1294 else if (*p == '/') 1295 a->q_mailer = m = FileMailer; 1296 else if (*p == ':') 1297 { 1298 /* may be :include: */ 1299 cataddr(tv, NULL, buf, sizeof buf, '\0'); 1300 stripquotes(buf); 1301 if (strncasecmp(buf, ":include:", 9) == 0) 1302 { 1303 /* if :include:, don't need further rewriting */ 1304 a->q_mailer = m = InclMailer; 1305 a->q_user = &buf[9]; 1306 return (a); 1307 } 1308 } 1309 } 1310 1311 if (m == LocalMailer && *tv != NULL && strcmp(*tv, "@") == 0) 1312 { 1313 tv++; 1314 a->q_flags |= QNOTREMOTE; 1315 } 1316 1317 /* do cleanup of final address */ 1318 (void) rewrite(tv, 4, e); 1319 1320 /* save the result for the command line/RCPT argument */ 1321 cataddr(tv, NULL, buf, sizeof buf, '\0'); 1322 a->q_user = buf; 1323 1324 /* 1325 ** Do mapping to lower case as requested by mailer 1326 */ 1327 1328 if (a->q_host != NULL && !bitnset(M_HST_UPPER, m->m_flags)) 1329 makelower(a->q_host); 1330 if (!bitnset(M_USR_UPPER, m->m_flags)) 1331 makelower(a->q_user); 1332 1333 return (a); 1334 } 1335 /* 1336 ** CATADDR -- concatenate pieces of addresses (putting in <LWSP> subs) 1337 ** 1338 ** Parameters: 1339 ** pvp -- parameter vector to rebuild. 1340 ** evp -- last parameter to include. Can be NULL to 1341 ** use entire pvp. 1342 ** buf -- buffer to build the string into. 1343 ** sz -- size of buf. 1344 ** spacesub -- the space separator character; if null, 1345 ** use SpaceSub. 1346 ** 1347 ** Returns: 1348 ** none. 1349 ** 1350 ** Side Effects: 1351 ** Destroys buf. 1352 */ 1353 1354 cataddr(pvp, evp, buf, sz, spacesub) 1355 char **pvp; 1356 char **evp; 1357 char *buf; 1358 register int sz; 1359 char spacesub; 1360 { 1361 bool oatomtok = FALSE; 1362 bool natomtok = FALSE; 1363 register int i; 1364 register char *p; 1365 1366 if (spacesub == '\0') 1367 spacesub = SpaceSub; 1368 1369 if (pvp == NULL) 1370 { 1371 (void) strcpy(buf, ""); 1372 return; 1373 } 1374 p = buf; 1375 sz -= 2; 1376 while (*pvp != NULL && (i = strlen(*pvp)) < sz) 1377 { 1378 natomtok = (toktype(**pvp) == ATM); 1379 if (oatomtok && natomtok) 1380 *p++ = spacesub; 1381 (void) strcpy(p, *pvp); 1382 oatomtok = natomtok; 1383 p += i; 1384 sz -= i + 1; 1385 if (pvp++ == evp) 1386 break; 1387 } 1388 *p = '\0'; 1389 } 1390 /* 1391 ** SAMEADDR -- Determine if two addresses are the same 1392 ** 1393 ** This is not just a straight comparison -- if the mailer doesn't 1394 ** care about the host we just ignore it, etc. 1395 ** 1396 ** Parameters: 1397 ** a, b -- pointers to the internal forms to compare. 1398 ** 1399 ** Returns: 1400 ** TRUE -- they represent the same mailbox. 1401 ** FALSE -- they don't. 1402 ** 1403 ** Side Effects: 1404 ** none. 1405 */ 1406 1407 bool 1408 sameaddr(a, b) 1409 register ADDRESS *a; 1410 register ADDRESS *b; 1411 { 1412 /* if they don't have the same mailer, forget it */ 1413 if (a->q_mailer != b->q_mailer) 1414 return (FALSE); 1415 1416 /* if the user isn't the same, we can drop out */ 1417 if (strcmp(a->q_user, b->q_user) != 0) 1418 return (FALSE); 1419 1420 /* if we have good uids for both but the differ, these are different */ 1421 if (bitset(QGOODUID, a->q_flags & b->q_flags) && a->q_uid != b->q_uid) 1422 return (FALSE); 1423 1424 /* otherwise compare hosts (but be careful for NULL ptrs) */ 1425 if (a->q_host == b->q_host) 1426 { 1427 /* probably both null pointers */ 1428 return (TRUE); 1429 } 1430 if (a->q_host == NULL || b->q_host == NULL) 1431 { 1432 /* only one is a null pointer */ 1433 return (FALSE); 1434 } 1435 if (strcmp(a->q_host, b->q_host) != 0) 1436 return (FALSE); 1437 1438 return (TRUE); 1439 } 1440 /* 1441 ** PRINTADDR -- print address (for debugging) 1442 ** 1443 ** Parameters: 1444 ** a -- the address to print 1445 ** follow -- follow the q_next chain. 1446 ** 1447 ** Returns: 1448 ** none. 1449 ** 1450 ** Side Effects: 1451 ** none. 1452 */ 1453 1454 printaddr(a, follow) 1455 register ADDRESS *a; 1456 bool follow; 1457 { 1458 bool first = TRUE; 1459 register MAILER *m; 1460 MAILER pseudomailer; 1461 1462 while (a != NULL) 1463 { 1464 first = FALSE; 1465 printf("%x=", a); 1466 (void) fflush(stdout); 1467 1468 /* find the mailer -- carefully */ 1469 m = a->q_mailer; 1470 if (m == NULL) 1471 { 1472 m = &pseudomailer; 1473 m->m_mno = -1; 1474 m->m_name = "NULL"; 1475 } 1476 1477 printf("%s:\n\tmailer %d (%s), host `%s', user `%s', ruser `%s'\n", 1478 a->q_paddr, m->m_mno, m->m_name, 1479 a->q_host, a->q_user, a->q_ruser? a->q_ruser: "<null>"); 1480 printf("\tnext=%x, flags=%o, alias %x, uid %d, gid %d\n", 1481 a->q_next, a->q_flags, a->q_alias, a->q_uid, a->q_gid); 1482 printf("\towner=%s, home=\"%s\", fullname=\"%s\"\n", 1483 a->q_owner == NULL ? "(none)" : a->q_owner, 1484 a->q_home, a->q_fullname); 1485 1486 if (!follow) 1487 return; 1488 a = a->q_next; 1489 } 1490 if (first) 1491 printf("[NULL]\n"); 1492 } 1493 1494 /* 1495 ** REMOTENAME -- return the name relative to the current mailer 1496 ** 1497 ** Parameters: 1498 ** name -- the name to translate. 1499 ** m -- the mailer that we want to do rewriting relative 1500 ** to. 1501 ** flags -- fine tune operations. 1502 ** pstat -- pointer to status word. 1503 ** e -- the current envelope. 1504 ** 1505 ** Returns: 1506 ** the text string representing this address relative to 1507 ** the receiving mailer. 1508 ** 1509 ** Side Effects: 1510 ** none. 1511 ** 1512 ** Warnings: 1513 ** The text string returned is tucked away locally; 1514 ** copy it if you intend to save it. 1515 */ 1516 1517 char * 1518 remotename(name, m, flags, pstat, e) 1519 char *name; 1520 struct mailer *m; 1521 int flags; 1522 int *pstat; 1523 register ENVELOPE *e; 1524 { 1525 register char **pvp; 1526 char *fancy; 1527 char *oldg = macvalue('g', e); 1528 int rwset; 1529 static char buf[MAXNAME]; 1530 char lbuf[MAXNAME]; 1531 char pvpbuf[PSBUFSIZE]; 1532 extern char *crackaddr(); 1533 1534 if (tTd(12, 1)) 1535 printf("remotename(%s)\n", name); 1536 1537 /* don't do anything if we are tagging it as special */ 1538 if (bitset(RF_SENDERADDR, flags)) 1539 rwset = bitset(RF_HEADERADDR, flags) ? m->m_sh_rwset 1540 : m->m_se_rwset; 1541 else 1542 rwset = bitset(RF_HEADERADDR, flags) ? m->m_rh_rwset 1543 : m->m_re_rwset; 1544 if (rwset < 0) 1545 return (name); 1546 1547 /* 1548 ** Do a heuristic crack of this name to extract any comment info. 1549 ** This will leave the name as a comment and a $g macro. 1550 */ 1551 1552 if (bitset(RF_CANONICAL, flags) || bitnset(M_NOCOMMENT, m->m_flags)) 1553 fancy = "\201g"; 1554 else 1555 fancy = crackaddr(name); 1556 1557 /* 1558 ** Turn the name into canonical form. 1559 ** Normally this will be RFC 822 style, i.e., "user@domain". 1560 ** If this only resolves to "user", and the "C" flag is 1561 ** specified in the sending mailer, then the sender's 1562 ** domain will be appended. 1563 */ 1564 1565 pvp = prescan(name, '\0', pvpbuf, NULL); 1566 if (pvp == NULL) 1567 return (name); 1568 if (rewrite(pvp, 3, e) == EX_TEMPFAIL) 1569 *pstat = EX_TEMPFAIL; 1570 if (bitset(RF_ADDDOMAIN, flags) && e->e_fromdomain != NULL) 1571 { 1572 /* append from domain to this address */ 1573 register char **pxp = pvp; 1574 1575 /* see if there is an "@domain" in the current name */ 1576 while (*pxp != NULL && strcmp(*pxp, "@") != 0) 1577 pxp++; 1578 if (*pxp == NULL) 1579 { 1580 /* no.... append the "@domain" from the sender */ 1581 register char **qxq = e->e_fromdomain; 1582 1583 while ((*pxp++ = *qxq++) != NULL) 1584 continue; 1585 if (rewrite(pvp, 3, e) == EX_TEMPFAIL) 1586 *pstat = EX_TEMPFAIL; 1587 } 1588 } 1589 1590 /* 1591 ** Do more specific rewriting. 1592 ** Rewrite using ruleset 1 or 2 depending on whether this is 1593 ** a sender address or not. 1594 ** Then run it through any receiving-mailer-specific rulesets. 1595 */ 1596 1597 if (bitset(RF_SENDERADDR, flags)) 1598 { 1599 if (rewrite(pvp, 1, e) == EX_TEMPFAIL) 1600 *pstat = EX_TEMPFAIL; 1601 } 1602 else 1603 { 1604 if (rewrite(pvp, 2, e) == EX_TEMPFAIL) 1605 *pstat = EX_TEMPFAIL; 1606 } 1607 if (rwset > 0) 1608 { 1609 if (rewrite(pvp, rwset, e) == EX_TEMPFAIL) 1610 *pstat = EX_TEMPFAIL; 1611 } 1612 1613 /* 1614 ** Do any final sanitation the address may require. 1615 ** This will normally be used to turn internal forms 1616 ** (e.g., user@host.LOCAL) into external form. This 1617 ** may be used as a default to the above rules. 1618 */ 1619 1620 if (rewrite(pvp, 4, e) == EX_TEMPFAIL) 1621 *pstat = EX_TEMPFAIL; 1622 1623 /* 1624 ** Now restore the comment information we had at the beginning. 1625 */ 1626 1627 cataddr(pvp, NULL, lbuf, sizeof lbuf, '\0'); 1628 define('g', lbuf, e); 1629 expand(fancy, buf, &buf[sizeof buf - 1], e); 1630 define('g', oldg, e); 1631 1632 if (tTd(12, 1)) 1633 printf("remotename => `%s'\n", buf); 1634 return (buf); 1635 } 1636 /* 1637 ** MAPLOCALUSER -- run local username through ruleset 5 for final redirection 1638 ** 1639 ** Parameters: 1640 ** a -- the address to map (but just the user name part). 1641 ** sendq -- the sendq in which to install any replacement 1642 ** addresses. 1643 ** 1644 ** Returns: 1645 ** none. 1646 */ 1647 1648 maplocaluser(a, sendq, e) 1649 register ADDRESS *a; 1650 ADDRESS **sendq; 1651 ENVELOPE *e; 1652 { 1653 register char **pvp; 1654 register ADDRESS *a1 = NULL; 1655 auto char *delimptr; 1656 char pvpbuf[PSBUFSIZE]; 1657 1658 if (tTd(29, 1)) 1659 { 1660 printf("maplocaluser: "); 1661 printaddr(a, FALSE); 1662 } 1663 pvp = prescan(a->q_user, '\0', pvpbuf, &delimptr); 1664 if (pvp == NULL) 1665 return; 1666 1667 (void) rewrite(pvp, 5, e); 1668 if (pvp[0] == NULL || (pvp[0][0] & 0377) != CANONNET) 1669 return; 1670 1671 /* if non-null, mailer destination specified -- has it changed? */ 1672 a1 = buildaddr(pvp, NULL, e); 1673 if (a1 == NULL || sameaddr(a, a1)) 1674 return; 1675 1676 /* mark old address as dead; insert new address */ 1677 a->q_flags |= QDONTSEND; 1678 if (tTd(29, 5)) 1679 { 1680 printf("maplocaluser: QDONTSEND "); 1681 printaddr(a, FALSE); 1682 } 1683 a1->q_alias = a; 1684 allocaddr(a1, 1, NULL, delimptr); 1685 (void) recipient(a1, sendq, e); 1686 } 1687 /* 1688 ** DEQUOTE_INIT -- initialize dequote map 1689 ** 1690 ** This is a no-op. 1691 ** 1692 ** Parameters: 1693 ** map -- the internal map structure. 1694 ** args -- arguments. 1695 ** 1696 ** Returns: 1697 ** TRUE. 1698 */ 1699 1700 bool 1701 dequote_init(map, args) 1702 MAP *map; 1703 char *args; 1704 { 1705 register char *p = args; 1706 1707 for (;;) 1708 { 1709 while (isascii(*p) && isspace(*p)) 1710 p++; 1711 if (*p != '-') 1712 break; 1713 switch (*++p) 1714 { 1715 case 'a': 1716 map->map_app = ++p; 1717 break; 1718 } 1719 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 1720 p++; 1721 if (*p != '\0') 1722 *p = '\0'; 1723 } 1724 if (map->map_app != NULL) 1725 map->map_app = newstr(map->map_app); 1726 1727 return TRUE; 1728 } 1729 /* 1730 ** DEQUOTE_MAP -- unquote an address 1731 ** 1732 ** Parameters: 1733 ** map -- the internal map structure (ignored). 1734 ** name -- the name to dequote. 1735 ** av -- arguments (ignored). 1736 ** statp -- pointer to status out-parameter. 1737 ** 1738 ** Returns: 1739 ** NULL -- if there were no quotes, or if the resulting 1740 ** unquoted buffer would not be acceptable to prescan. 1741 ** else -- The dequoted buffer. 1742 */ 1743 1744 char * 1745 dequote_map(map, name, av, statp) 1746 MAP *map; 1747 char *name; 1748 char **av; 1749 int *statp; 1750 { 1751 register char *p; 1752 register char *q; 1753 register char c; 1754 int anglecnt; 1755 int cmntcnt; 1756 int quotecnt; 1757 int spacecnt; 1758 bool quotemode; 1759 bool bslashmode; 1760 1761 anglecnt = 0; 1762 cmntcnt = 0; 1763 quotecnt = 0; 1764 spacecnt = 0; 1765 quotemode = FALSE; 1766 bslashmode = FALSE; 1767 1768 for (p = q = name; (c = *p++) != '\0'; ) 1769 { 1770 if (bslashmode) 1771 { 1772 bslashmode = FALSE; 1773 *q++ = c; 1774 continue; 1775 } 1776 1777 switch (c) 1778 { 1779 case '\\': 1780 bslashmode = TRUE; 1781 break; 1782 1783 case '(': 1784 cmntcnt++; 1785 break; 1786 1787 case ')': 1788 if (cmntcnt-- <= 0) 1789 return NULL; 1790 break; 1791 1792 case ' ': 1793 spacecnt++; 1794 break; 1795 } 1796 1797 if (cmntcnt > 0) 1798 { 1799 *q++ = c; 1800 continue; 1801 } 1802 1803 switch (c) 1804 { 1805 case '"': 1806 quotemode = !quotemode; 1807 quotecnt++; 1808 continue; 1809 1810 case '<': 1811 anglecnt++; 1812 break; 1813 1814 case '>': 1815 if (anglecnt-- <= 0) 1816 return NULL; 1817 break; 1818 } 1819 *q++ = c; 1820 } 1821 1822 if (anglecnt != 0 || cmntcnt != 0 || bslashmode || 1823 quotemode || quotecnt <= 0 || spacecnt != 0) 1824 return NULL; 1825 *q++ = '\0'; 1826 return name; 1827 } 1828