Commit | Line | Data |
---|---|---|
f0e070dc | 1 | /* |
dc45ba8c | 2 | * Copyright (c) 1983 Eric P. Allman |
c1f0acb8 KB |
3 | * Copyright (c) 1988, 1993 |
4 | * The Regents of the University of California. All rights reserved. | |
bee79b64 | 5 | * |
417f7a11 | 6 | * %sccs.include.redist.c% |
bee79b64 | 7 | */ |
f0e070dc MAN |
8 | |
9 | #ifndef lint | |
77779257 | 10 | static char sccsid[] = "@(#)parseaddr.c 8.20 (Berkeley) %G%"; |
bee79b64 | 11 | #endif /* not lint */ |
f0e070dc | 12 | |
fd6cfc53 EA |
13 | #include "sendmail.h" |
14 | ||
15 | #ifdef CC_WONT_PROMOTE | |
16 | static int toktype __P((char)); | |
17 | #else /* !CC_WONT_PROMOTE */ | |
18 | static int toktype __P((int)); /* char -> int */ | |
19 | #endif /* CC_WONT_PROMOTE */ | |
20 | static void _rewrite __P((char **, int)); | |
21 | static void callsubr __P((char **)); | |
22 | static ADDRESS * buildaddr __P((char **, ADDRESS *)); | |
23 | static void uurelativize __P((const char *, const char *, char **)); | |
24 | ||
25 | char *DelimChar; /* set to point to the delimiter */ | |
916b3375 | 26 | |
b3cbe40f | 27 | /* |
40d27fed | 28 | ** PARSEADDR -- Parse an address |
b3cbe40f EA |
29 | ** |
30 | ** Parses an address and breaks it up into three parts: a | |
31 | ** net to transmit the message on, the host to transmit it | |
32 | ** to, and a user on that host. These are loaded into an | |
406f98bc | 33 | ** ADDRESS header with the values squirreled away if necessary. |
b3cbe40f EA |
34 | ** The "user" part may not be a real user; the process may |
35 | ** just reoccur on that machine. For example, on a machine | |
36 | ** with an arpanet connection, the address | |
37 | ** csvax.bill@berkeley | |
38 | ** will break up to a "user" of 'csvax.bill' and a host | |
39 | ** of 'berkeley' -- to be transmitted over the arpanet. | |
40 | ** | |
41 | ** Parameters: | |
42 | ** addr -- the address to parse. | |
43 | ** a -- a pointer to the address descriptor buffer. | |
44 | ** If NULL, a header will be created. | |
28f94061 EA |
45 | ** flags -- describe detail for parsing. See RF_ definitions |
46 | ** in sendmail.h. | |
d3f52e20 EA |
47 | ** delim -- the character to terminate the address, passed |
48 | ** to prescan. | |
9e2cf26f EA |
49 | ** delimptr -- if non-NULL, set to the location of the |
50 | ** delim character that was found. | |
a4076aed | 51 | ** e -- the envelope that will contain this address. |
b3cbe40f EA |
52 | ** |
53 | ** Returns: | |
54 | ** A pointer to the address descriptor header (`a' if | |
55 | ** `a' is non-NULL). | |
56 | ** NULL on error. | |
57 | ** | |
58 | ** Side Effects: | |
59 | ** none | |
b3cbe40f EA |
60 | */ |
61 | ||
7338e3d4 | 62 | /* following delimiters are inherent to the internal algorithms */ |
3f99edce | 63 | # define DELIMCHARS "()<>,;\r\n" /* default word delimiters */ |
ecf90b7d | 64 | |
406f98bc | 65 | ADDRESS * |
28f94061 | 66 | parseaddr(addr, a, flags, delim, delimptr, e) |
b3cbe40f | 67 | char *addr; |
406f98bc | 68 | register ADDRESS *a; |
28f94061 | 69 | int flags; |
ef3bc6b1 | 70 | int delim; |
9e2cf26f | 71 | char **delimptr; |
a4076aed | 72 | register ENVELOPE *e; |
b3cbe40f | 73 | { |
d6a28dd8 | 74 | register char **pvp; |
9e2cf26f | 75 | auto char *delimptrbuf; |
d1db7a89 | 76 | bool queueup; |
217a0102 | 77 | char pvpbuf[PSBUFSIZE]; |
b3cbe40f EA |
78 | |
79 | /* | |
80 | ** Initialize and prescan address. | |
81 | */ | |
82 | ||
a4076aed | 83 | e->e_to = addr; |
9678c96d | 84 | if (tTd(20, 1)) |
40d27fed | 85 | printf("\n--parseaddr(%s)\n", addr); |
9e3c0a28 | 86 | |
fd6cfc53 EA |
87 | { |
88 | extern char *DelimChar; /* parseaddr.c */ | |
89 | char savec; | |
90 | bool invalid; | |
c40bef63 EA |
91 | extern char *finddelim(); |
92 | extern bool invalidaddr(); | |
fd6cfc53 EA |
93 | |
94 | DelimChar = finddelim(addr, delim); | |
95 | savec = *DelimChar; | |
96 | *DelimChar = '\0'; | |
97 | invalid = invalidaddr(addr); | |
98 | *DelimChar = savec; | |
99 | if (invalid) | |
100 | return (NULL); | |
101 | } | |
102 | ||
9e2cf26f EA |
103 | if (delimptr == NULL) |
104 | delimptr = &delimptrbuf; | |
105 | ||
106 | pvp = prescan(addr, delim, pvpbuf, delimptr); | |
d6a28dd8 | 107 | if (pvp == NULL) |
a17692a9 EA |
108 | { |
109 | if (tTd(20, 1)) | |
110 | printf("parseaddr-->NULL\n"); | |
b3cbe40f | 111 | return (NULL); |
a17692a9 | 112 | } |
b3cbe40f | 113 | |
7c40218a EA |
114 | if (invalidaddr(addr, delim == '\0' ? NULL : *delimptr)) |
115 | { | |
116 | if (tTd(20, 1)) | |
117 | printf("parseaddr-->bad address\n"); | |
118 | return NULL; | |
119 | } | |
120 | ||
dab5fedb EA |
121 | /* |
122 | ** Save addr if we are going to have to. | |
123 | ** | |
124 | ** We have to do this early because there is a chance that | |
125 | ** the map lookups in the rewriting rules could clobber | |
126 | ** static memory somewhere. | |
127 | */ | |
128 | ||
129 | if (bitset(RF_COPYPADDR, flags) && addr != NULL) | |
130 | { | |
131 | char savec = **delimptr; | |
132 | ||
133 | if (savec != '\0') | |
134 | **delimptr = '\0'; | |
135 | addr = newstr(addr); | |
136 | if (savec != '\0') | |
137 | **delimptr = savec; | |
138 | } | |
139 | ||
b3cbe40f | 140 | /* |
d6a28dd8 | 141 | ** Apply rewriting rules. |
0908f182 | 142 | ** Ruleset 0 does basic parsing. It must resolve. |
b3cbe40f EA |
143 | */ |
144 | ||
d1db7a89 EA |
145 | queueup = FALSE; |
146 | if (rewrite(pvp, 3, e) == EX_TEMPFAIL) | |
147 | queueup = TRUE; | |
148 | if (rewrite(pvp, 0, e) == EX_TEMPFAIL) | |
149 | queueup = TRUE; | |
b3cbe40f | 150 | |
b3cbe40f EA |
151 | |
152 | /* | |
d6a28dd8 | 153 | ** Build canonical address from pvp. |
b3cbe40f EA |
154 | */ |
155 | ||
28f94061 | 156 | a = buildaddr(pvp, a, flags, e); |
b3cbe40f EA |
157 | |
158 | /* | |
d6a28dd8 EA |
159 | ** Make local copies of the host & user and then |
160 | ** transport them out. | |
b3cbe40f EA |
161 | */ |
162 | ||
dab5fedb | 163 | allocaddr(a, flags, addr); |
9577b1df EA |
164 | if (bitset(QBADADDR, a->q_flags)) |
165 | return a; | |
d13779b1 | 166 | |
d1db7a89 EA |
167 | /* |
168 | ** If there was a parsing failure, mark it for queueing. | |
169 | */ | |
170 | ||
171 | if (queueup) | |
c281eee3 | 172 | { |
7ffb494c EA |
173 | char *msg = "Transient parse error -- message queued for future delivery"; |
174 | ||
c281eee3 EA |
175 | if (tTd(20, 1)) |
176 | printf("parseaddr: queuing message\n"); | |
7ffb494c EA |
177 | message(msg); |
178 | if (e->e_message == NULL) | |
f10d3e38 | 179 | e->e_message = newstr(msg); |
d1db7a89 | 180 | a->q_flags |= QQUEUEUP; |
c281eee3 | 181 | } |
d1db7a89 | 182 | |
d13779b1 EA |
183 | /* |
184 | ** Compute return value. | |
185 | */ | |
186 | ||
187 | if (tTd(20, 1)) | |
188 | { | |
189 | printf("parseaddr-->"); | |
190 | printaddr(a, FALSE); | |
191 | } | |
192 | ||
193 | return (a); | |
194 | } | |
195 | \f/* | |
ab542b8f EA |
196 | ** INVALIDADDR -- check for address containing meta-characters |
197 | ** | |
198 | ** Parameters: | |
199 | ** addr -- the address to check. | |
200 | ** | |
201 | ** Returns: | |
202 | ** TRUE -- if the address has any "wierd" characters | |
203 | ** FALSE -- otherwise. | |
204 | */ | |
205 | ||
206 | bool | |
7c40218a | 207 | invalidaddr(addr, delimptr) |
ab542b8f | 208 | register char *addr; |
7c40218a | 209 | char *delimptr; |
ab542b8f | 210 | { |
7c40218a EA |
211 | char savedelim; |
212 | ||
213 | if (delimptr != NULL) | |
46275151 | 214 | { |
7c40218a | 215 | savedelim = *delimptr; |
46275151 EA |
216 | if (savedelim != '\0') |
217 | *delimptr = '\0'; | |
218 | } | |
7c40218a EA |
219 | #if 0 |
220 | /* for testing.... */ | |
221 | if (strcmp(addr, "INvalidADDR") == 0) | |
ab542b8f | 222 | { |
7c40218a | 223 | usrerr("553 INvalid ADDRess"); |
46275151 | 224 | goto addrfailure; |
ab542b8f | 225 | } |
7c40218a EA |
226 | #endif |
227 | for (; *addr != '\0'; addr++) | |
228 | { | |
229 | if ((*addr & 0340) == 0200) | |
230 | break; | |
231 | } | |
7c40218a | 232 | if (*addr == '\0') |
46275151 EA |
233 | { |
234 | if (savedelim != '\0' && delimptr != NULL) | |
235 | *delimptr = savedelim; | |
7c40218a | 236 | return FALSE; |
46275151 | 237 | } |
7c40218a EA |
238 | setstat(EX_USAGE); |
239 | usrerr("553 Address contained invalid control characters"); | |
46275151 EA |
240 | addrfailure: |
241 | if (savedelim != '\0' && delimptr != NULL) | |
242 | *delimptr = savedelim; | |
7c40218a | 243 | return TRUE; |
ab542b8f EA |
244 | } |
245 | \f/* | |
d13779b1 EA |
246 | ** ALLOCADDR -- do local allocations of address on demand. |
247 | ** | |
248 | ** Also lowercases the host name if requested. | |
249 | ** | |
250 | ** Parameters: | |
251 | ** a -- the address to reallocate. | |
28f94061 EA |
252 | ** flags -- the copy flag (see RF_ definitions in sendmail.h |
253 | ** for a description). | |
d13779b1 EA |
254 | ** paddr -- the printname of the address. |
255 | ** | |
256 | ** Returns: | |
257 | ** none. | |
258 | ** | |
259 | ** Side Effects: | |
260 | ** Copies portions of a into local buffers as requested. | |
261 | */ | |
262 | ||
dab5fedb | 263 | allocaddr(a, flags, paddr) |
d13779b1 | 264 | register ADDRESS *a; |
28f94061 | 265 | int flags; |
d13779b1 EA |
266 | char *paddr; |
267 | { | |
7002d4e7 | 268 | if (tTd(24, 4)) |
28f94061 | 269 | printf("allocaddr(flags=%o, paddr=%s)\n", flags, paddr); |
7002d4e7 | 270 | |
dab5fedb | 271 | a->q_paddr = paddr; |
2e3062fe EA |
272 | |
273 | if (a->q_user == NULL) | |
274 | a->q_user = ""; | |
275 | if (a->q_host == NULL) | |
276 | a->q_host = ""; | |
277 | ||
28f94061 | 278 | if (bitset(RF_COPYPARSE, flags)) |
b3cbe40f | 279 | { |
2e3062fe | 280 | a->q_host = newstr(a->q_host); |
d6a28dd8 EA |
281 | if (a->q_user != a->q_paddr) |
282 | a->q_user = newstr(a->q_user); | |
b3cbe40f EA |
283 | } |
284 | ||
d13779b1 EA |
285 | if (a->q_paddr == NULL) |
286 | a->q_paddr = a->q_user; | |
0fe3917f EA |
287 | } |
288 | \f/* | |
fd6cfc53 EA |
289 | ** INVALIDADDR -- check an address string for invalid control characters. |
290 | ** | |
291 | ** Parameters: | |
292 | ** addr -- address string to be checked. | |
293 | ** | |
294 | ** Returns: | |
295 | ** TRUE if address string could cause problems, FALSE o/w. | |
296 | ** | |
297 | ** Side Effects: | |
298 | ** ExitStat may be changed and an error message generated. | |
299 | */ | |
300 | ||
301 | bool | |
302 | invalidaddr(addr) | |
303 | const char *addr; | |
304 | { | |
305 | register const char *cp; | |
306 | ||
307 | /* make sure error messages don't have garbage on them */ | |
308 | errno = 0; | |
309 | ||
310 | /* | |
311 | ** Sendmail reserves characters 020 - 036 for rewriting rules | |
312 | ** which can cause havoc (e.g. infinite rewriting loops) if | |
313 | ** one shows up at the wrong time. If any of these characters | |
314 | ** appear in an address, the address is deemed "invalid" and | |
315 | ** an error message is generated. | |
316 | */ | |
317 | ||
318 | for (cp = addr; *cp; cp++) | |
319 | if ((*cp >= MATCHZANY && *cp <= HOSTEND) || *cp == '\001') | |
320 | { | |
321 | setstat(EX_USAGE); | |
322 | usrerr("address contained invalid control char(s)"); | |
323 | return (TRUE); | |
324 | } | |
325 | return (FALSE); | |
326 | } | |
327 | \f/* | |
b3cbe40f EA |
328 | ** PRESCAN -- Prescan name and make it canonical |
329 | ** | |
7338e3d4 EA |
330 | ** Scans a name and turns it into a set of tokens. This process |
331 | ** deletes blanks and comments (in parentheses). | |
b3cbe40f EA |
332 | ** |
333 | ** This routine knows about quoted strings and angle brackets. | |
334 | ** | |
335 | ** There are certain subtleties to this routine. The one that | |
336 | ** comes to mind now is that backslashes on the ends of names | |
337 | ** are silently stripped off; this is intentional. The problem | |
338 | ** is that some versions of sndmsg (like at LBL) set the kill | |
339 | ** character to something other than @ when reading addresses; | |
340 | ** so people type "csvax.eric\@berkeley" -- which screws up the | |
341 | ** berknet mailer. | |
342 | ** | |
343 | ** Parameters: | |
344 | ** addr -- the name to chomp. | |
b3cbe40f EA |
345 | ** delim -- the delimiter for the address, normally |
346 | ** '\0' or ','; \0 is accepted in any case. | |
f12f79be | 347 | ** If '\t' then we are reading the .cf file. |
217a0102 EA |
348 | ** pvpbuf -- place to put the saved text -- note that |
349 | ** the pointers are static. | |
9e2cf26f EA |
350 | ** delimptr -- if non-NULL, set to the location of the |
351 | ** terminating delimiter. | |
b3cbe40f EA |
352 | ** |
353 | ** Returns: | |
d6a28dd8 | 354 | ** A pointer to a vector of tokens. |
b3cbe40f | 355 | ** NULL on error. |
b3cbe40f EA |
356 | */ |
357 | ||
506fc377 EA |
358 | /* states and character types */ |
359 | # define OPR 0 /* operator */ | |
360 | # define ATM 1 /* atom */ | |
361 | # define QST 2 /* in quoted string */ | |
362 | # define SPC 3 /* chewing up spaces */ | |
363 | # define ONE 4 /* pick up one character */ | |
364 | ||
365 | # define NSTATES 5 /* number of states */ | |
366 | # define TYPE 017 /* mask to select state type */ | |
367 | ||
368 | /* meta bits for table */ | |
369 | # define M 020 /* meta character; don't pass through */ | |
370 | # define B 040 /* cause a break */ | |
371 | # define MB M|B /* meta-break */ | |
372 | ||
373 | static short StateTab[NSTATES][NSTATES] = | |
374 | { | |
921e1125 | 375 | /* oldst chtype> OPR ATM QST SPC ONE */ |
1f513630 EA |
376 | /*OPR*/ OPR|B, ATM|B, QST|B, SPC|MB, ONE|B, |
377 | /*ATM*/ OPR|B, ATM, QST|B, SPC|MB, ONE|B, | |
378 | /*QST*/ QST, QST, OPR, QST, QST, | |
506fc377 EA |
379 | /*SPC*/ OPR, ATM, QST, SPC|M, ONE, |
380 | /*ONE*/ OPR, OPR, OPR, OPR, OPR, | |
381 | }; | |
382 | ||
383 | # define NOCHAR -1 /* signal nothing in lookahead token */ | |
384 | ||
d6a28dd8 | 385 | char ** |
9e2cf26f | 386 | prescan(addr, delim, pvpbuf, delimptr) |
b3cbe40f | 387 | char *addr; |
b3cbe40f | 388 | char delim; |
217a0102 | 389 | char pvpbuf[]; |
9e2cf26f | 390 | char **delimptr; |
b3cbe40f EA |
391 | { |
392 | register char *p; | |
506fc377 | 393 | register char *q; |
611b763d | 394 | register int c; |
d6a28dd8 | 395 | char **avp; |
b3cbe40f EA |
396 | bool bslashmode; |
397 | int cmntcnt; | |
e93460a9 | 398 | int anglecnt; |
d6a28dd8 | 399 | char *tok; |
506fc377 EA |
400 | int state; |
401 | int newstate; | |
fba945cd | 402 | char *saveto = CurEnv->e_to; |
506fc377 | 403 | static char *av[MAXATOM+1]; |
15cd119d EA |
404 | |
405 | /* make sure error messages don't have garbage on them */ | |
406 | errno = 0; | |
b3cbe40f | 407 | |
217a0102 | 408 | q = pvpbuf; |
d6a28dd8 | 409 | bslashmode = FALSE; |
43ff8bb5 | 410 | cmntcnt = 0; |
e93460a9 | 411 | anglecnt = 0; |
d6a28dd8 | 412 | avp = av; |
85c61679 | 413 | state = ATM; |
506fc377 EA |
414 | c = NOCHAR; |
415 | p = addr; | |
fba945cd | 416 | CurEnv->e_to = p; |
97a521ff | 417 | if (tTd(22, 11)) |
506fc377 EA |
418 | { |
419 | printf("prescan: "); | |
420 | xputs(p); | |
03388044 | 421 | (void) putchar('\n'); |
506fc377 | 422 | } |
506fc377 EA |
423 | |
424 | do | |
b3cbe40f | 425 | { |
d6a28dd8 EA |
426 | /* read a token */ |
427 | tok = q; | |
506fc377 | 428 | for (;;) |
b3cbe40f | 429 | { |
506fc377 | 430 | /* store away any old lookahead character */ |
e9937bb7 | 431 | if (c != NOCHAR && !bslashmode) |
506fc377 | 432 | { |
f12f79be | 433 | /* see if there is room */ |
217a0102 | 434 | if (q >= &pvpbuf[PSBUFSIZE - 5]) |
506fc377 | 435 | { |
b6edea3d | 436 | usrerr("553 Address too long"); |
77779257 | 437 | returnnull: |
9e2cf26f EA |
438 | if (delimptr != NULL) |
439 | *delimptr = p; | |
fba945cd | 440 | CurEnv->e_to = saveto; |
506fc377 EA |
441 | return (NULL); |
442 | } | |
f12f79be EA |
443 | |
444 | /* squirrel it away */ | |
506fc377 EA |
445 | *q++ = c; |
446 | } | |
447 | ||
448 | /* read a new input character */ | |
449 | c = *p++; | |
422bed79 | 450 | if (c == '\0') |
97a521ff EA |
451 | { |
452 | /* diagnose and patch up bad syntax */ | |
453 | if (state == QST) | |
454 | { | |
ec14f23c | 455 | usrerr("653 Unbalanced '\"'"); |
97a521ff EA |
456 | c = '"'; |
457 | } | |
458 | else if (cmntcnt > 0) | |
459 | { | |
ec14f23c | 460 | usrerr("653 Unbalanced '('"); |
97a521ff EA |
461 | c = ')'; |
462 | } | |
463 | else if (anglecnt > 0) | |
464 | { | |
465 | c = '>'; | |
ec14f23c | 466 | usrerr("653 Unbalanced '<'"); |
97a521ff EA |
467 | } |
468 | else | |
469 | break; | |
470 | ||
471 | p--; | |
472 | } | |
422bed79 EA |
473 | else if (c == delim && anglecnt <= 0 && |
474 | cmntcnt <= 0 && state != QST) | |
475 | break; | |
f12f79be | 476 | |
506fc377 EA |
477 | if (tTd(22, 101)) |
478 | printf("c=%c, s=%d; ", c, state); | |
506fc377 | 479 | |
d6a28dd8 EA |
480 | /* chew up special characters */ |
481 | *q = '\0'; | |
482 | if (bslashmode) | |
483 | { | |
ff54f632 EA |
484 | bslashmode = FALSE; |
485 | ||
2e3062fe | 486 | /* kludge \! for naive users */ |
5d41b806 | 487 | if (cmntcnt > 0) |
ff54f632 | 488 | { |
5d41b806 | 489 | c = NOCHAR; |
ff54f632 EA |
490 | continue; |
491 | } | |
492 | else if (c != '!' || state == QST) | |
493 | { | |
85c61679 | 494 | *q++ = '\\'; |
ff54f632 EA |
495 | continue; |
496 | } | |
d6a28dd8 | 497 | } |
048264ae EA |
498 | |
499 | if (c == '\\') | |
d6a28dd8 EA |
500 | { |
501 | bslashmode = TRUE; | |
d6a28dd8 | 502 | } |
fd6cfc53 | 503 | if (state == QST) |
63a35680 EA |
504 | { |
505 | /* do nothing, just avoid next clauses */ | |
506 | } | |
506fc377 | 507 | else if (c == '(') |
cdb17311 | 508 | { |
506fc377 EA |
509 | cmntcnt++; |
510 | c = NOCHAR; | |
cdb17311 | 511 | } |
506fc377 | 512 | else if (c == ')') |
d6a28dd8 | 513 | { |
506fc377 | 514 | if (cmntcnt <= 0) |
d6a28dd8 | 515 | { |
ec14f23c | 516 | usrerr("653 Unbalanced ')'"); |
64b7394c | 517 | c = NOCHAR; |
d6a28dd8 | 518 | } |
506fc377 EA |
519 | else |
520 | cmntcnt--; | |
d6a28dd8 | 521 | } |
506fc377 EA |
522 | else if (cmntcnt > 0) |
523 | c = NOCHAR; | |
e93460a9 EA |
524 | else if (c == '<') |
525 | anglecnt++; | |
526 | else if (c == '>') | |
527 | { | |
528 | if (anglecnt <= 0) | |
529 | { | |
ec14f23c | 530 | usrerr("653 Unbalanced '>'"); |
64b7394c | 531 | c = NOCHAR; |
e93460a9 | 532 | } |
64b7394c EA |
533 | else |
534 | anglecnt--; | |
e93460a9 | 535 | } |
2bee003d | 536 | else if (delim == ' ' && isascii(c) && isspace(c)) |
926671ee | 537 | c = ' '; |
7b955214 EA |
538 | else if (c == ':' && !CurEnv->e_oldstyle) |
539 | { | |
540 | /* consume characters until a semicolon */ | |
541 | while (*p != '\0' && *p != ';') | |
542 | p++; | |
543 | if (*p == '\0') | |
544 | usrerr("Unbalanced ':...;' group spec"); | |
545 | else | |
546 | p++; | |
547 | c = ' '; | |
548 | } | |
d6a28dd8 | 549 | |
fd6cfc53 EA |
550 | else if (c == ';') /* semicolons are not tokens */ |
551 | c = NOCHAR; | |
552 | ||
506fc377 EA |
553 | if (c == NOCHAR) |
554 | continue; | |
d6a28dd8 | 555 | |
506fc377 | 556 | /* see if this is end of input */ |
f115fb3a | 557 | if (c == delim && anglecnt <= 0 && state != QST) |
506fc377 | 558 | break; |
d6a28dd8 | 559 | |
506fc377 | 560 | newstate = StateTab[state][toktype(c)]; |
506fc377 EA |
561 | if (tTd(22, 101)) |
562 | printf("ns=%02o\n", newstate); | |
506fc377 EA |
563 | state = newstate & TYPE; |
564 | if (bitset(M, newstate)) | |
565 | c = NOCHAR; | |
566 | if (bitset(B, newstate)) | |
d6a28dd8 | 567 | break; |
b3cbe40f | 568 | } |
d6a28dd8 EA |
569 | |
570 | /* new token */ | |
506fc377 | 571 | if (tok != q) |
2a119b55 | 572 | { |
506fc377 | 573 | *q++ = '\0'; |
506fc377 | 574 | if (tTd(22, 36)) |
b3cbe40f | 575 | { |
506fc377 EA |
576 | printf("tok="); |
577 | xputs(tok); | |
03388044 | 578 | (void) putchar('\n'); |
b3cbe40f | 579 | } |
506fc377 | 580 | if (avp >= &av[MAXATOM]) |
b3cbe40f | 581 | { |
b6edea3d | 582 | syserr("553 prescan: too many tokens"); |
77779257 EA |
583 | goto returnnull; |
584 | } | |
585 | if (q - tok > MAXNAME) | |
586 | { | |
587 | syserr("553 prescan: token too long"); | |
588 | goto returnnull; | |
b3cbe40f | 589 | } |
506fc377 | 590 | *avp++ = tok; |
b3cbe40f | 591 | } |
e93460a9 | 592 | } while (c != '\0' && (c != delim || anglecnt > 0)); |
d6a28dd8 | 593 | *avp = NULL; |
9e2cf26f EA |
594 | p--; |
595 | if (delimptr != NULL) | |
596 | *delimptr = p; | |
97a521ff EA |
597 | if (tTd(22, 12)) |
598 | { | |
599 | printf("prescan==>"); | |
600 | printav(av); | |
601 | } | |
fba945cd | 602 | CurEnv->e_to = saveto; |
6cb17374 | 603 | if (av[0] == NULL) |
c2d0b04b EA |
604 | { |
605 | if (tTd(22, 1)) | |
606 | printf("prescan: null leading token\n"); | |
6cb17374 | 607 | return (NULL); |
c2d0b04b | 608 | } |
1c4d5753 | 609 | return (av); |
d6a28dd8 EA |
610 | } |
611 | \f/* | |
612 | ** TOKTYPE -- return token type | |
613 | ** | |
614 | ** Parameters: | |
615 | ** c -- the character in question. | |
616 | ** | |
617 | ** Returns: | |
618 | ** Its type. | |
619 | ** | |
620 | ** Side Effects: | |
621 | ** none. | |
622 | */ | |
b3cbe40f | 623 | |
fd6cfc53 | 624 | static int |
d6a28dd8 | 625 | toktype(c) |
2bee003d | 626 | register int c; |
d6a28dd8 | 627 | { |
05f1e115 | 628 | static char buf[50]; |
e232ff47 | 629 | static bool firstime = TRUE; |
05f1e115 | 630 | |
e232ff47 | 631 | if (firstime) |
05f1e115 | 632 | { |
e232ff47 | 633 | firstime = FALSE; |
2bee003d | 634 | expand("\201o", buf, &buf[sizeof buf - 1], CurEnv); |
f9566d23 | 635 | (void) strcat(buf, DELIMCHARS); |
05f1e115 | 636 | } |
2bee003d | 637 | c &= 0377; |
c40bef63 | 638 | if (c == MATCHCLASS || c == MATCHREPL || c == MATCHNCLASS) |
506fc377 | 639 | return (ONE); |
1ac3479f EA |
640 | if (c == MACRODEXPAND) |
641 | return (ONE); | |
fd6cfc53 EA |
642 | #ifdef MACVALUE |
643 | if (c == MACVALUE) | |
644 | return (ONE); | |
645 | #endif /* MACVALUE */ | |
506fc377 EA |
646 | if (c == '"') |
647 | return (QST); | |
2bee003d EA |
648 | if ((c & 0340) == 0200) |
649 | return (OPR); | |
cdb17311 | 650 | if (!isascii(c)) |
506fc377 EA |
651 | return (ATM); |
652 | if (isspace(c) || c == ')') | |
653 | return (SPC); | |
2bee003d | 654 | if (strchr(buf, c) != NULL) |
506fc377 EA |
655 | return (OPR); |
656 | return (ATM); | |
d6a28dd8 EA |
657 | } |
658 | \f/* | |
659 | ** REWRITE -- apply rewrite rules to token vector. | |
660 | ** | |
2258fda6 EA |
661 | ** This routine is an ordered production system. Each rewrite |
662 | ** rule has a LHS (called the pattern) and a RHS (called the | |
663 | ** rewrite); 'rwr' points the the current rewrite rule. | |
664 | ** | |
665 | ** For each rewrite rule, 'avp' points the address vector we | |
666 | ** are trying to match against, and 'pvp' points to the pattern. | |
792a6b53 | 667 | ** If pvp points to a special match value (MATCHZANY, MATCHANY, |
9f39d7cd EA |
668 | ** MATCHONE, MATCHCLASS, MATCHNCLASS) then the address in avp |
669 | ** matched is saved away in the match vector (pointed to by 'mvp'). | |
2258fda6 EA |
670 | ** |
671 | ** When a match between avp & pvp does not match, we try to | |
9f39d7cd | 672 | ** back out. If we back up over MATCHONE, MATCHCLASS, or MATCHNCLASS |
2258fda6 | 673 | ** we must also back out the match in mvp. If we reach a |
792a6b53 EA |
674 | ** MATCHANY or MATCHZANY we just extend the match and start |
675 | ** over again. | |
2258fda6 EA |
676 | ** |
677 | ** When we finally match, we rewrite the address vector | |
678 | ** and try over again. | |
679 | ** | |
d6a28dd8 EA |
680 | ** Parameters: |
681 | ** pvp -- pointer to token vector. | |
1ac3479f EA |
682 | ** ruleset -- the ruleset to use for rewriting. |
683 | ** e -- the current envelope. | |
d6a28dd8 EA |
684 | ** |
685 | ** Returns: | |
d1db7a89 EA |
686 | ** A status code. If EX_TEMPFAIL, higher level code should |
687 | ** attempt recovery. | |
d6a28dd8 EA |
688 | ** |
689 | ** Side Effects: | |
690 | ** pvp is modified. | |
691 | */ | |
692 | ||
fd6cfc53 EA |
693 | # define OP_NONZLEN 00001 |
694 | # define OP_VARLEN 00002 | |
695 | # define OP_CLASS 00004 | |
696 | # define OP_EXACT 00010 | |
697 | ||
d6a28dd8 EA |
698 | struct match |
699 | { | |
54e8e18d EA |
700 | char **first; /* first token matched */ |
701 | char **last; /* last token matched */ | |
9d6aecfd | 702 | char **pattern; /* pointer to pattern */ |
fd6cfc53 EA |
703 | char **source; /* left hand source operand */ |
704 | char flags; /* attributes of this operator */ | |
d6a28dd8 EA |
705 | }; |
706 | ||
54e8e18d | 707 | # define MAXMATCH 9 /* max params per rewrite */ |
fd6cfc53 EA |
708 | # define MAX_CONTROL ' ' |
709 | ||
710 | static char control_opts[MAX_CONTROL]; | |
711 | ||
d1db7a89 | 712 | int |
fd6cfc53 EA |
713 | static char control_init_data[] = { |
714 | MATCHZANY, OP_VARLEN, | |
715 | MATCHONE, OP_NONZLEN, | |
716 | MATCHANY, OP_VARLEN|OP_NONZLEN, | |
717 | #ifdef MACVALUE | |
718 | MACVALUE, OP_EXACT, | |
719 | #endif /* MACVALUE */ | |
720 | MATCHNCLASS, OP_NONZLEN, | |
721 | MATCHCLASS, OP_NONZLEN|OP_VARLEN|OP_CLASS, | |
fd6cfc53 | 722 | }; |
d6a28dd8 | 723 | |
fd6cfc53 | 724 | static int nrw; |
d6a28dd8 | 725 | |
fd6cfc53 | 726 | void |
1ac3479f | 727 | rewrite(pvp, ruleset, e) |
d6a28dd8 | 728 | char **pvp; |
f65e7ded | 729 | int ruleset; |
1ac3479f | 730 | register ENVELOPE *e; |
fd6cfc53 EA |
731 | { |
732 | nrw = 0; | |
733 | _rewrite(pvp, ruleset); | |
734 | } | |
735 | ||
736 | static void | |
737 | _rewrite(pvp, ruleset) | |
738 | char **pvp; | |
739 | int ruleset; | |
d6a28dd8 EA |
740 | { |
741 | register char *ap; /* address pointer */ | |
742 | register char *rp; /* rewrite pointer */ | |
743 | register char **avp; /* address vector pointer */ | |
744 | register char **rvp; /* rewrite vector pointer */ | |
792a6b53 EA |
745 | register struct match *mlp; /* cur ptr into mlist */ |
746 | register struct rewrite *rwr; /* pointer to current rewrite rule */ | |
75df37ee | 747 | int ruleno; /* current rule number */ |
d1db7a89 | 748 | int rstat = EX_OK; /* return status */ |
1d91f401 | 749 | int loopcount; |
41173b8f EA |
750 | int subr; /* subroutine number if >= 0 */ |
751 | bool dolookup; /* do host aliasing */ | |
d6a28dd8 | 752 | char *npvp[MAXATOM+1]; /* temporary space for rebuild */ |
fd6cfc53 EA |
753 | char tokbuf[MAXNAME+1]; /* for concatenated class tokens */ |
754 | int nloops, nmatches = 0; /* for looping rule checks */ | |
755 | struct rewrite *prev_rwr; /* pointer to previous rewrite rule */ | |
756 | struct match mlist[MAXMATCH+1]; /* stores match on LHS */ | |
757 | struct match *old_mlp; /* to save our place */ | |
758 | bool extend_match; /* extend existing match during backup */ | |
759 | ||
75f95954 | 760 | if (OpMode == MD_TEST || tTd(21, 2)) |
d6a28dd8 | 761 | { |
b726abe3 | 762 | printf("rewrite: ruleset %2d input:", ruleset); |
fd6cfc53 | 763 | printcav(pvp); |
d6a28dd8 | 764 | } |
f62b79ae EA |
765 | if (ruleset < 0 || ruleset >= MAXRWSETS) |
766 | { | |
b6edea3d | 767 | syserr("554 rewrite: illegal ruleset number %d", ruleset); |
d1db7a89 | 768 | return EX_CONFIG; |
f62b79ae | 769 | } |
e93460a9 | 770 | if (pvp == NULL) |
d1db7a89 | 771 | return EX_USAGE; |
d6a28dd8 | 772 | |
fd6cfc53 EA |
773 | if (++nrw > 100) |
774 | { | |
775 | char buf[MAXLINE]; | |
776 | ||
777 | buf[0] = buf[MAXLINE-1] = 0; | |
778 | while (*pvp) | |
779 | (void) strncat(buf, *pvp++, sizeof buf); | |
780 | syserr("address causes rewrite loop: <%s>", buf); | |
781 | return; | |
782 | } | |
783 | ||
784 | /* Be sure to recognize first rule as new */ | |
785 | prev_rwr = NULL; | |
786 | ||
d6a28dd8 | 787 | /* |
fd6cfc53 | 788 | ** Run through the list of rewrite rules, applying any that match. |
d6a28dd8 EA |
789 | */ |
790 | ||
75df37ee | 791 | ruleno = 1; |
1d91f401 | 792 | loopcount = 0; |
f65e7ded | 793 | for (rwr = RewriteRules[ruleset]; rwr != NULL; ) |
d6a28dd8 | 794 | { |
9678c96d | 795 | if (tTd(21, 12)) |
d6a28dd8 | 796 | { |
b00e6882 | 797 | printf("-----trying rule:"); |
fd6cfc53 EA |
798 | printcav(rwr->r_lhs); |
799 | } | |
800 | ||
801 | /* | |
802 | ** Set up the match list. This is done once for each | |
803 | ** rule. If a rule is used repeatedly, the list need not | |
804 | ** be set up the next time. | |
805 | */ | |
806 | ||
807 | if (rwr != prev_rwr) | |
808 | { | |
809 | prev_rwr = rwr; | |
810 | for (rvp = rwr->r_lhs, mlp = mlist; | |
811 | *rvp && (mlp < &mlist[MAXMATCH]); rvp++) | |
812 | { | |
813 | mlp->flags = ((unsigned char) **rvp >= MAX_CONTROL) ? | |
814 | 0 : control_opts[**rvp] ; | |
815 | if (mlp->flags) | |
816 | { | |
817 | mlp->source = rvp; | |
818 | mlp++; | |
819 | } | |
820 | } | |
821 | if (*rvp) | |
822 | { | |
823 | syserr("Too many variables on LHS in ruleset %d", ruleset); | |
824 | return; | |
825 | } | |
826 | mlp->source = rvp; | |
827 | ||
828 | /* Make sure end marker is initialized */ | |
829 | mlp->flags = 0; | |
d6a28dd8 | 830 | } |
ecf90b7d | 831 | |
d6a28dd8 | 832 | /* try to match on this rule */ |
54e8e18d | 833 | mlp = mlist; |
fd6cfc53 | 834 | |
792a6b53 EA |
835 | rvp = rwr->r_lhs; |
836 | avp = pvp; | |
fd6cfc53 EA |
837 | nloops = 0; |
838 | extend_match = FALSE; | |
839 | ||
75df37ee | 840 | if (++loopcount > 100) |
b3cbe40f | 841 | { |
fd6cfc53 EA |
842 | if (nloops++ > 400) |
843 | { | |
844 | syserr("Looping on ruleset %d, rule %d", | |
845 | ruleset, rwr-RewriteRules[ruleset]); | |
846 | mlp = mlist - 1; /* force rule failure */ | |
847 | break; | |
848 | } | |
75df37ee EA |
849 | syserr("554 Infinite loop in ruleset %d, rule %d", |
850 | ruleset, ruleno); | |
851 | if (tTd(21, 1)) | |
72f91c2e | 852 | { |
f62b79ae EA |
853 | printf("workspace: "); |
854 | printav(pvp); | |
72f91c2e | 855 | } |
75df37ee EA |
856 | break; |
857 | } | |
858 | ||
859 | while ((ap = *avp) != NULL || *rvp != NULL) | |
860 | { | |
d6a28dd8 | 861 | rp = *rvp; |
fd6cfc53 | 862 | |
792a6b53 EA |
863 | if (tTd(21, 35)) |
864 | { | |
9d6aecfd | 865 | printf("ADVANCE rp="); |
792a6b53 | 866 | xputs(rp); |
5a1d901b | 867 | printf(", ap="); |
511c3bad | 868 | xputs(ap); |
b00e6882 | 869 | printf("\n"); |
792a6b53 | 870 | } |
fd6cfc53 EA |
871 | |
872 | if (extend_match) | |
873 | extend_match = FALSE; | |
874 | else | |
b3cbe40f | 875 | { |
fd6cfc53 EA |
876 | mlp->first = avp; |
877 | mlp->last = mlp->flags == 0 || (mlp->flags & OP_NONZLEN) ? | |
878 | avp + 1 : avp; | |
879 | } | |
880 | ||
881 | if (rp == NULL) | |
d6a28dd8 | 882 | /* end-of-pattern before end-of-address */ |
792a6b53 | 883 | goto backup; |
fd6cfc53 EA |
884 | |
885 | /* Premature end of address */ | |
886 | if (ap == NULL && avp != mlp->last) | |
887 | goto backup; | |
888 | ||
889 | /* | |
890 | ** Simplest case - exact token comparison between | |
891 | ** pattern and address. Such a match is not saved | |
892 | ** in mlp. | |
893 | */ | |
894 | ||
895 | if (rvp < mlp->source) | |
792a6b53 | 896 | { |
fd6cfc53 EA |
897 | if (ap == NULL || strcasecmp(ap, rp)) |
898 | goto backup; | |
899 | rvp++; | |
900 | avp++; | |
901 | continue; | |
d6a28dd8 EA |
902 | } |
903 | ||
fd6cfc53 EA |
904 | #ifdef MACVALUE |
905 | /* | |
906 | ** This is special case handled. The match is exact, | |
907 | ** but might span zero or more address tokens. The | |
908 | ** result is saved in mlp. | |
909 | */ | |
910 | ||
911 | if (*rp == MACVALUE) | |
d6a28dd8 | 912 | { |
fd6cfc53 EA |
913 | int len; |
914 | rp = macvalue(rp[1], CurEnv); | |
13834bfc | 915 | |
fd6cfc53 EA |
916 | if (rp) |
917 | while (*rp) | |
918 | { | |
919 | if (*avp == NULL || strncasecmp(rp,*avp,len = strlen(*avp))) | |
920 | goto backup; | |
921 | rp += len; | |
922 | avp++; | |
923 | } | |
924 | mlp->last = avp; | |
925 | rvp++; | |
926 | mlp++; | |
927 | continue; | |
928 | } | |
929 | #endif /* MACVALUE */ | |
930 | ||
931 | /* | |
932 | ** All other matches are saved in mlp. Initially | |
933 | ** assume they match at the shortest possible length | |
934 | ** for this pattern. Variable patterns will be | |
935 | ** extended later as needed. | |
936 | */ | |
937 | ||
938 | /* Fixed length first */ | |
939 | if (!(mlp->flags & OP_VARLEN)) | |
940 | { | |
941 | switch (*rp) | |
9f39d7cd | 942 | { |
fd6cfc53 | 943 | break; |
fd6cfc53 | 944 | } |
792a6b53 | 945 | |
fd6cfc53 EA |
946 | avp = mlp->last; |
947 | rvp++; | |
54e8e18d | 948 | mlp++; |
1bca74dd EA |
949 | break; |
950 | ||
a42056e7 | 951 | case MATCHZERO: |
1bca74dd | 952 | /* match zero tokens */ |
fd6cfc53 EA |
953 | continue; |
954 | } | |
955 | ||
1ac3479f EA |
956 | case MACRODEXPAND: |
957 | /* | |
958 | ** Match against run-time macro. | |
959 | ** This algorithm is broken for the | |
960 | ** general case (no recursive macros, | |
961 | ** improper tokenization) but should | |
962 | ** work for the usual cases. | |
963 | */ | |
964 | ||
965 | ap = macvalue(rp[1], e); | |
966 | mlp->first = avp; | |
967 | if (tTd(21, 2)) | |
968 | printf("rewrite: LHS $&%c => \"%s\"\n", | |
969 | rp[1], | |
970 | ap == NULL ? "(NULL)" : ap); | |
971 | ||
972 | if (ap == NULL) | |
973 | break; | |
54d35e43 | 974 | while (*ap != '\0') |
1ac3479f EA |
975 | { |
976 | if (*avp == NULL || | |
977 | strncasecmp(ap, *avp, strlen(*avp)) != 0) | |
978 | { | |
979 | /* no match */ | |
980 | avp = mlp->first; | |
981 | goto backup; | |
982 | } | |
983 | ap += strlen(*avp++); | |
984 | } | |
985 | ||
986 | /* match */ | |
987 | break; | |
988 | ||
fd6cfc53 EA |
989 | /* |
990 | ** We now have a variable length item. It could | |
991 | ** be $+ or $* in which case no special checking | |
992 | ** is needed. But a class match such as $=x must | |
993 | ** be verified. | |
994 | ** | |
995 | ** As a speedup, if a variable length item is | |
996 | ** followed by a plain character token, we initially | |
997 | ** extend the match to the first such token we find. | |
998 | ** If the required character token cannot be found, | |
999 | ** we fail the match at this point. | |
1000 | */ | |
1001 | ||
1002 | avp = mlp->last; | |
1003 | ||
1004 | /* If next token is char token */ | |
1005 | if (&rvp[1] < mlp[1].source) | |
1006 | { | |
1007 | while (*avp && strcasecmp(*avp, rvp[1])) | |
1008 | avp++; | |
1009 | ||
1010 | /* | |
1011 | ** If we can't find the proper ending token, | |
1012 | ** leave avp point to NULL. This indicates | |
1013 | ** we have run out of address tokens. It is | |
1014 | ** pointless to advance the beginning of this | |
1015 | ** match and retry. | |
1016 | */ | |
13834bfc | 1017 | |
fd6cfc53 | 1018 | if (*avp == NULL) |
792a6b53 | 1019 | goto backup; |
fd6cfc53 EA |
1020 | mlp->last = avp; |
1021 | } | |
1022 | else if (rvp[1] == NULL) | |
1023 | /* next token is end of address */ | |
1024 | { | |
1025 | while (*avp) | |
1026 | avp++; | |
1027 | mlp->last = avp; | |
1028 | } | |
1029 | ||
1030 | if (mlp->flags & OP_CLASS) | |
1031 | { | |
1032 | register char *cp = tokbuf; | |
1033 | ||
1034 | avp = mlp->first; | |
1035 | strcpy(cp, *avp); | |
54e8e18d | 1036 | avp++; |
fd6cfc53 EA |
1037 | for (;;) |
1038 | { | |
1039 | while (avp < mlp->last) | |
1040 | { | |
1041 | while (*cp) | |
1042 | cp++; | |
1043 | strcpy(cp, *avp); | |
1044 | avp++; | |
1045 | } | |
1046 | switch (*rp) | |
1047 | { | |
1048 | register STAB *s; | |
1049 | ||
1050 | case MATCHCLASS: | |
1051 | s = stab(tokbuf, ST_CLASS, ST_FIND); | |
1052 | if (s != NULL && bitnset(rp[1], s->s_class)) | |
1053 | goto have_match; | |
1054 | break; | |
fd6cfc53 EA |
1055 | } |
1056 | ||
1057 | /* | |
1058 | ** Class match initially failed. | |
1059 | ** Extend the tentative match. | |
1060 | ** Again, if followed by a character | |
1061 | ** token, extend all the way to that | |
1062 | ** token before checking. | |
1063 | */ | |
1064 | ||
1065 | if (*avp) | |
1066 | { | |
1067 | (mlp->last)++; | |
1068 | if (&rvp[1] < mlp[1].source) | |
1069 | { | |
1070 | while (*(mlp->last) && strcasecmp(*(mlp->last), rvp[1])) | |
1071 | (mlp->last)++; | |
1072 | if (*(mlp->last) == NULL) | |
1073 | avp = mlp->last; | |
1074 | } | |
1075 | } | |
1076 | if (*avp == NULL) | |
1077 | { | |
1078 | /* | |
1079 | ** We could not find the | |
1080 | ** ending token. But we had | |
1081 | ** found ending tokens before. | |
1082 | ** A match is still plausible | |
1083 | ** if the start of the | |
1084 | ** tentative match is advanced. | |
1085 | ** Hence we must not leave avp | |
1086 | ** pointing to NULL. | |
1087 | */ | |
1088 | avp = mlp->first; | |
1089 | goto backup; | |
1090 | } | |
1091 | } | |
d6a28dd8 EA |
1092 | } |
1093 | ||
fd6cfc53 | 1094 | have_match: |
d6a28dd8 | 1095 | rvp++; |
fd6cfc53 | 1096 | mlp++; |
d6a28dd8 EA |
1097 | continue; |
1098 | ||
fd6cfc53 EA |
1099 | backup: |
1100 | /* We failed to match. mlp marks point of failure */ | |
1101 | ||
1102 | /* | |
1103 | ** There is a special case when we have exhausted | |
1104 | ** the address, but have not exhausted the pattern. | |
1105 | ** Under normal circumstances we could consider the | |
1106 | ** failure permanent, since extending the number of | |
1107 | ** address tokens matched by a '$+' or a '$*' will | |
1108 | ** only worsen the situation. | |
1109 | ** | |
1110 | ** There is an exception, however. It is possible | |
1111 | ** that we have matched a class token, say '$=x', | |
1112 | ** with three or more tokens. Extending a '$+' say, | |
1113 | ** which precedes the '$=x' will move the beginning | |
1114 | ** of the '$=x' match to the right, but it might match | |
1115 | ** a smaller number of tokens then, possibly | |
1116 | ** correcting the mismatch. | |
1117 | ** | |
1118 | ** Thus in this case we initially back up to the | |
1119 | ** $=x which matches three or more tokens. | |
1120 | */ | |
1121 | ||
1122 | if (*avp == NULL) | |
d6a28dd8 | 1123 | { |
9d6aecfd | 1124 | rvp = mlp->pattern; |
fd6cfc53 | 1125 | while (--mlp > mlist) |
54e8e18d | 1126 | { |
fd6cfc53 EA |
1127 | if ((mlp->flags & OP_CLASS) && |
1128 | mlp->last > 2 + mlp->first) | |
1129 | break; | |
d6a28dd8 EA |
1130 | } |
1131 | } | |
1132 | ||
fd6cfc53 EA |
1133 | /* |
1134 | ** Now backup till we find a match with a pattern | |
1135 | ** whose length is extendable, and extend that. | |
1136 | */ | |
1137 | ||
1138 | mlp--; | |
1139 | while (mlp >= mlist && !(mlp->flags & OP_VARLEN)) | |
1140 | mlp--; | |
1141 | ||
1142 | /* Total failure to match */ | |
1143 | if (mlp < mlist) | |
d6a28dd8 | 1144 | break; |
fd6cfc53 EA |
1145 | |
1146 | avp = ++(mlp->last); | |
1147 | rvp = mlp->source; | |
1148 | ||
1149 | /* | |
1150 | ** We have found a backup point. Normally we would | |
1151 | ** increase the matched amount by one token, and | |
1152 | ** continue from the next item in the pattern. But | |
1153 | ** there are two special cases. If this is a | |
1154 | ** class-type match (OP_CLASS), we must test the | |
1155 | ** validity of the extended match. If this pattern | |
1156 | ** item is directly followed by a character token, it | |
1157 | ** is worth going back and locating the next such | |
1158 | ** character token before we continue on. | |
1159 | */ | |
1160 | if ((mlp->flags & OP_CLASS) || (&rvp[1] < mlp[1].source)) | |
1161 | { | |
1162 | avp = mlp->first; | |
1163 | extend_match = TRUE; | |
1164 | } | |
1165 | else | |
1166 | { | |
1167 | mlp++; | |
1168 | rvp++; | |
b3cbe40f | 1169 | } |
b3cbe40f | 1170 | } |
d6a28dd8 EA |
1171 | |
1172 | /* | |
fd6cfc53 | 1173 | ** See if we successfully matched. |
d6a28dd8 EA |
1174 | */ |
1175 | ||
fd6cfc53 | 1176 | if (mlp < mlist) |
d6a28dd8 | 1177 | { |
7338e3d4 EA |
1178 | if (tTd(21, 10)) |
1179 | printf("----- rule fails\n"); | |
7338e3d4 | 1180 | rwr = rwr->r_next; |
75df37ee | 1181 | ruleno++; |
1d91f401 | 1182 | loopcount = 0; |
fd6cfc53 EA |
1183 | nmatches = 0; |
1184 | continue; | |
1185 | } | |
1186 | ||
1187 | if (nmatches++ > 200) | |
1188 | { | |
1189 | syserr("Loop in ruleset %d, rule %d (too many matches)", | |
1190 | ruleset, rwr - RewriteRules[ruleset]); | |
1191 | rwr = rwr->r_next; | |
1192 | nmatches = 0; | |
7338e3d4 EA |
1193 | continue; |
1194 | } | |
d6a28dd8 | 1195 | |
7338e3d4 | 1196 | rvp = rwr->r_rhs; |
7338e3d4 EA |
1197 | if (tTd(21, 12)) |
1198 | { | |
1199 | printf("-----rule matches:"); | |
fd6cfc53 | 1200 | printcav(rvp); |
7338e3d4 | 1201 | } |
7338e3d4 EA |
1202 | |
1203 | rp = *rvp; | |
2bee003d | 1204 | if ((*rp & 0377) == CANONUSER) |
7338e3d4 EA |
1205 | { |
1206 | rvp++; | |
1207 | rwr = rwr->r_next; | |
75df37ee | 1208 | ruleno++; |
1d91f401 | 1209 | loopcount = 0; |
fd6cfc53 | 1210 | nmatches = 0; |
7338e3d4 | 1211 | } |
2bee003d | 1212 | else if ((*rp & 0377) == CANONHOST) |
7338e3d4 EA |
1213 | { |
1214 | rvp++; | |
1215 | rwr = NULL; | |
1216 | } | |
2bee003d | 1217 | else if ((*rp & 0377) == CANONNET) |
7338e3d4 EA |
1218 | rwr = NULL; |
1219 | ||
1220 | /* substitute */ | |
41173b8f | 1221 | dolookup = FALSE; |
7338e3d4 EA |
1222 | for (avp = npvp; *rvp != NULL; rvp++) |
1223 | { | |
1224 | register struct match *m; | |
1225 | register char **pp; | |
792a6b53 | 1226 | |
7338e3d4 | 1227 | rp = *rvp; |
41173b8f EA |
1228 | |
1229 | /* check to see if we should do a lookup */ | |
1230 | if (*rp == MATCHLOOKUP) | |
1231 | dolookup = TRUE; | |
1232 | ||
1233 | /* see if there is substitution here */ | |
fd6cfc53 | 1234 | if (*rp == MATCHREPL && rp[1] >= '1' && rp[1] <= '9') |
d6a28dd8 | 1235 | { |
217a0102 EA |
1236 | /* substitute from LHS */ |
1237 | m = &mlist[rp[1] - '1']; | |
f62b79ae | 1238 | if (m < mlist || m >= mlp) |
d6a28dd8 | 1239 | { |
41173b8f | 1240 | toolong: |
fd6cfc53 EA |
1241 | syserr("rewrite: ruleset %d: replacement #%c out of bounds", |
1242 | ruleset, rp[1]); | |
d1db7a89 | 1243 | return EX_CONFIG; |
7338e3d4 | 1244 | } |
217a0102 EA |
1245 | if (tTd(21, 15)) |
1246 | { | |
1247 | printf("$%c:", rp[1]); | |
1248 | pp = m->first; | |
fd6cfc53 | 1249 | while (pp < m->last) |
217a0102 EA |
1250 | { |
1251 | printf(" %x=\"", *pp); | |
1252 | (void) fflush(stdout); | |
1253 | printf("%s\"", *pp++); | |
1254 | } | |
1255 | printf("\n"); | |
1256 | } | |
7338e3d4 | 1257 | pp = m->first; |
fd6cfc53 | 1258 | while (pp < m->last) |
e96bade8 | 1259 | { |
217a0102 | 1260 | if (avp >= &npvp[MAXATOM]) |
fd6cfc53 | 1261 | goto toolong; |
217a0102 | 1262 | *avp++ = *pp++; |
e96bade8 | 1263 | } |
d6a28dd8 | 1264 | } |
217a0102 | 1265 | else |
45ecb1bf | 1266 | { |
217a0102 | 1267 | /* vanilla replacement */ |
7338e3d4 | 1268 | if (avp >= &npvp[MAXATOM]) |
41173b8f | 1269 | goto toolong; |
fd6cfc53 EA |
1270 | #ifdef MACVALUE |
1271 | if (*rp == MACVALUE) | |
1272 | { | |
1273 | char *p = macvalue(rp[1], CurEnv); | |
1274 | ||
1275 | if (tTd(21, 2)) | |
1276 | printf("expanding runtime macro '%c' to \"%s\"\n", | |
1277 | rp[1], p ? p : "(null)"); | |
1278 | if (p) | |
1279 | *avp++ = p; | |
1280 | } | |
1281 | else | |
1282 | #endif /* MACVALUE */ | |
1283 | *avp++ = rp; | |
45ecb1bf | 1284 | } |
7338e3d4 EA |
1285 | } |
1286 | *avp++ = NULL; | |
41173b8f | 1287 | |
217a0102 | 1288 | /* |
42fa5d67 | 1289 | ** Check for any hostname/keyword lookups. |
217a0102 EA |
1290 | */ |
1291 | ||
1292 | for (rvp = npvp; *rvp != NULL; rvp++) | |
1293 | { | |
fd6cfc53 | 1294 | char **hbrvp, **ubrvp; |
217a0102 EA |
1295 | char **xpvp; |
1296 | int trsize; | |
42fa5d67 EA |
1297 | char *replac; |
1298 | int endtoken; | |
1299 | STAB *map; | |
1300 | char *mapname; | |
1301 | char **key_rvp; | |
1302 | char **arg_rvp; | |
1303 | char **default_rvp; | |
fd6cfc53 | 1304 | char hbuf[MAXNAME + 1], ubuf[MAXNAME + 1]; |
217a0102 | 1305 | char *pvpb1[MAXATOM + 1]; |
5a4c03c6 | 1306 | char *argvect[10]; |
7ac75266 | 1307 | char pvpbuf[PSBUFSIZE]; |
f0b4483c | 1308 | char *nullpvp[1]; |
fd6cfc53 EA |
1309 | bool match, defaultpart; |
1310 | char begintype; | |
1311 | char db = '\0'; | |
217a0102 | 1312 | |
2bee003d EA |
1313 | if ((**rvp & 0377) != HOSTBEGIN && |
1314 | (**rvp & 0377) != LOOKUPBEGIN) | |
217a0102 EA |
1315 | continue; |
1316 | ||
1317 | /* | |
42fa5d67 | 1318 | ** Got a hostname/keyword lookup. |
217a0102 EA |
1319 | ** |
1320 | ** This could be optimized fairly easily. | |
1321 | */ | |
1322 | ||
fd6cfc53 | 1323 | begintype = **rvp; |
217a0102 | 1324 | hbrvp = rvp; |
fd6cfc53 | 1325 | ubrvp = NULL; |
2bee003d | 1326 | if ((**rvp & 0377) == HOSTBEGIN) |
42fa5d67 EA |
1327 | { |
1328 | endtoken = HOSTEND; | |
1329 | mapname = "host"; | |
1330 | } | |
1331 | else | |
1332 | { | |
1333 | endtoken = LOOKUPEND; | |
1334 | mapname = *++rvp; | |
1335 | } | |
1336 | map = stab(mapname, ST_MAP, ST_FIND); | |
1337 | if (map == NULL) | |
b6edea3d | 1338 | syserr("554 rewrite: map %s not found", mapname); |
217a0102 EA |
1339 | |
1340 | /* extract the match part */ | |
42fa5d67 | 1341 | key_rvp = ++rvp; |
5a4c03c6 EA |
1342 | default_rvp = NULL; |
1343 | arg_rvp = argvect; | |
1344 | xpvp = NULL; | |
1345 | replac = pvpbuf; | |
2bee003d | 1346 | while (*rvp != NULL && (**rvp & 0377) != endtoken) |
42fa5d67 | 1347 | { |
2bee003d | 1348 | int nodetype = **rvp & 0377; |
5a4c03c6 EA |
1349 | |
1350 | if (nodetype != CANONHOST && nodetype != CANONUSER) | |
1351 | { | |
1352 | rvp++; | |
1353 | continue; | |
1354 | } | |
1355 | ||
1356 | *rvp++ = NULL; | |
1357 | ||
1358 | if (xpvp != NULL) | |
1359 | { | |
4fcb2bfa | 1360 | cataddr(xpvp, NULL, replac, |
1c7897ef EA |
1361 | &pvpbuf[sizeof pvpbuf] - replac, |
1362 | '\0'); | |
5a4c03c6 EA |
1363 | *++arg_rvp = replac; |
1364 | replac += strlen(replac) + 1; | |
1365 | xpvp = NULL; | |
1366 | } | |
1367 | switch (nodetype) | |
42fa5d67 EA |
1368 | { |
1369 | case CANONHOST: | |
5a4c03c6 | 1370 | xpvp = rvp; |
42fa5d67 EA |
1371 | break; |
1372 | ||
1373 | case CANONUSER: | |
42fa5d67 EA |
1374 | default_rvp = rvp; |
1375 | break; | |
42fa5d67 EA |
1376 | } |
1377 | } | |
217a0102 EA |
1378 | if (*rvp != NULL) |
1379 | *rvp++ = NULL; | |
5a4c03c6 EA |
1380 | if (xpvp != NULL) |
1381 | { | |
4fcb2bfa | 1382 | cataddr(xpvp, NULL, replac, |
1c7897ef EA |
1383 | &pvpbuf[sizeof pvpbuf] - replac, |
1384 | '\0'); | |
5a4c03c6 EA |
1385 | *++arg_rvp = replac; |
1386 | } | |
1387 | *++arg_rvp = NULL; | |
217a0102 EA |
1388 | |
1389 | /* save the remainder of the input string */ | |
1390 | trsize = (int) (avp - rvp + 1) * sizeof *rvp; | |
1391 | bcopy((char *) rvp, (char *) pvpb1, trsize); | |
1392 | ||
217a0102 | 1393 | /* append it to the token list */ |
fd6cfc53 EA |
1394 | for (avp = hbrvp; *xpvp != NULL; xpvp++) |
1395 | { | |
7ac75266 | 1396 | *avp++ = newstr(*xpvp); |
c0ef545b | 1397 | if (avp >= &npvp[MAXATOM]) |
217a0102 | 1398 | goto toolong; |
fd6cfc53 | 1399 | } |
7ac75266 | 1400 | } |
fd6cfc53 EA |
1401 | else |
1402 | avp = hbrvp; | |
217a0102 EA |
1403 | |
1404 | /* restore the old trailing information */ | |
fd6cfc53 EA |
1405 | rvp = avp - 1; |
1406 | for (xpvp = pvpb1; *xpvp != NULL; xpvp++) | |
1407 | { | |
c40bef63 | 1408 | if (defaultpart && **xpvp == HOSTEND) |
fd6cfc53 EA |
1409 | { |
1410 | defaultpart = FALSE; | |
1411 | rvp = avp - 1; | |
1412 | } | |
1413 | else if (!defaultpart || !match) | |
1414 | *avp++ = *xpvp; | |
c0ef545b | 1415 | if (avp >= &npvp[MAXATOM]) |
217a0102 | 1416 | goto toolong; |
fd6cfc53 EA |
1417 | } |
1418 | *avp++ = NULL; | |
7ac75266 | 1419 | |
fd6cfc53 | 1420 | /*break;*/ |
217a0102 EA |
1421 | } |
1422 | ||
1423 | /* | |
1424 | ** Check for subroutine calls. | |
fd6cfc53 | 1425 | ** Then copy vector back into original space. |
217a0102 EA |
1426 | */ |
1427 | ||
fd6cfc53 | 1428 | callsubr(npvp); |
217a0102 | 1429 | |
fd6cfc53 | 1430 | for (avp = npvp; *avp++ != NULL;); |
41173b8f EA |
1431 | subr = atoi(*++rvp); |
1432 | rvp++; | |
fd6cfc53 | 1433 | |
41173b8f EA |
1434 | else |
1435 | subr = -1; | |
1436 | ||
1437 | /* | |
1438 | ** Copy result back to original string. | |
1439 | */ | |
1440 | ||
1441 | for (avp = pvp; *rvp != NULL; rvp++) | |
1442 | *avp++ = *rvp; | |
1443 | *avp = NULL; | |
1444 | ||
1445 | /* | |
1446 | ** If this specified a subroutine, call it. | |
1447 | */ | |
1448 | ||
1449 | if (subr >= 0) | |
1450 | { | |
1451 | # ifdef DEBUG | |
1452 | if (tTd(21, 3)) | |
1453 | printf("-----callsubr %s\n", subr); | |
1454 | # endif DEBUG | |
1455 | rewrite(pvp, subr); | |
1456 | } | |
1457 | ||
1458 | /* | |
1459 | ** Done with rewriting this pass. | |
1460 | */ | |
1461 | ||
7338e3d4 EA |
1462 | if (tTd(21, 4)) |
1463 | { | |
1464 | printf("rewritten as:"); | |
fd6cfc53 | 1465 | printcav(pvp); |
d6a28dd8 | 1466 | } |
b3cbe40f | 1467 | } |
b00e6882 | 1468 | |
75f95954 | 1469 | if (OpMode == MD_TEST || tTd(21, 2)) |
b00e6882 | 1470 | { |
b726abe3 | 1471 | printf("rewrite: ruleset %2d returns:", ruleset); |
fd6cfc53 | 1472 | printcav(pvp); |
b00e6882 | 1473 | } |
d1db7a89 EA |
1474 | |
1475 | return rstat; | |
d6a28dd8 EA |
1476 | } |
1477 | \f/* | |
fd6cfc53 EA |
1478 | ** CALLSUBR -- call subroutines in rewrite vector |
1479 | ** | |
1480 | ** Parameters: | |
1481 | ** pvp -- pointer to token vector. | |
1482 | ** | |
1483 | ** Returns: | |
1484 | ** none. | |
1485 | ** | |
1486 | ** Side Effects: | |
1487 | ** pvp is modified. | |
1488 | */ | |
1489 | ||
1490 | static void | |
1491 | callsubr(pvp) | |
1492 | char **pvp; | |
1493 | { | |
1494 | char **rvp; | |
1495 | int subr; | |
1496 | ||
1497 | for (; *pvp != NULL; pvp++) | |
1498 | if (**pvp == CALLSUBR && pvp[1] != NULL && isdigit(pvp[1][0])) | |
1499 | { | |
1500 | subr = atoi(pvp[1]); | |
1501 | ||
1502 | if (tTd(21, 3)) | |
1503 | printf("-----callsubr %d\n", subr); | |
1504 | ||
1505 | /* | |
1506 | ** Take care of possible inner calls. | |
1507 | */ | |
1508 | callsubr(pvp+2); | |
1509 | ||
1510 | /* | |
1511 | ** Move vector up over calling opcode. | |
1512 | */ | |
1513 | for (rvp = pvp+2; *rvp != NULL; rvp++) | |
1514 | rvp[-2] = rvp[0]; | |
1515 | rvp[-2] = NULL; | |
1516 | ||
1517 | /* | |
1518 | ** Call inferior ruleset. | |
1519 | */ | |
1520 | _rewrite(pvp, subr); | |
1521 | ||
1522 | break; | |
1523 | } | |
1524 | } | |
1525 | \f/* | |
d6a28dd8 EA |
1526 | ** BUILDADDR -- build address from token vector. |
1527 | ** | |
1528 | ** Parameters: | |
1529 | ** tv -- token vector. | |
1530 | ** a -- pointer to address descriptor to fill. | |
1531 | ** If NULL, one will be allocated. | |
28f94061 EA |
1532 | ** flags -- info regarding whether this is a sender or |
1533 | ** a recipient. | |
35b698c6 | 1534 | ** e -- the current envelope. |
d6a28dd8 EA |
1535 | ** |
1536 | ** Returns: | |
fe43b434 EA |
1537 | ** NULL if there was an error. |
1538 | ** 'a' otherwise. | |
d6a28dd8 EA |
1539 | ** |
1540 | ** Side Effects: | |
1541 | ** fills in 'a' | |
1542 | */ | |
1543 | ||
c796f255 EA |
1544 | struct errcodes |
1545 | { | |
1546 | char *ec_name; /* name of error code */ | |
1547 | int ec_code; /* numeric code */ | |
1548 | } ErrorCodes[] = | |
1549 | { | |
1550 | "usage", EX_USAGE, | |
1551 | "nouser", EX_NOUSER, | |
1552 | "nohost", EX_NOHOST, | |
1553 | "unavailable", EX_UNAVAILABLE, | |
1554 | "software", EX_SOFTWARE, | |
1555 | "tempfail", EX_TEMPFAIL, | |
1556 | "protocol", EX_PROTOCOL, | |
1557 | #ifdef EX_CONFIG | |
1558 | "config", EX_CONFIG, | |
1559 | #endif | |
1560 | NULL, EX_UNAVAILABLE, | |
1561 | }; | |
1562 | ||
fd6cfc53 | 1563 | static ADDRESS * |
28f94061 | 1564 | buildaddr(tv, a, flags, e) |
d6a28dd8 EA |
1565 | register char **tv; |
1566 | register ADDRESS *a; | |
28f94061 | 1567 | int flags; |
35b698c6 | 1568 | register ENVELOPE *e; |
d6a28dd8 | 1569 | { |
d6a28dd8 EA |
1570 | struct mailer **mp; |
1571 | register struct mailer *m; | |
51d9cc47 EA |
1572 | char *bp; |
1573 | int spaceleft; | |
9577b1df EA |
1574 | static MAILER errormailer; |
1575 | static char *errorargv[] = { "ERROR", NULL }; | |
98e5062b | 1576 | static char buf[MAXNAME]; |
d6a28dd8 | 1577 | |
b07c457d EA |
1578 | if (tTd(24, 5)) |
1579 | { | |
1580 | printf("buildaddr, flags=%o, tv=", flags); | |
1581 | printav(tv); | |
1582 | } | |
1583 | ||
d6a28dd8 EA |
1584 | if (a == NULL) |
1585 | a = (ADDRESS *) xalloc(sizeof *a); | |
abae7b2d | 1586 | clear((char *) a, sizeof *a); |
d6a28dd8 EA |
1587 | |
1588 | /* figure out what net/mailer to use */ | |
fd6cfc53 | 1589 | if (*tv == NULL || **tv != CANONNET) |
fe43b434 | 1590 | { |
b6edea3d | 1591 | syserr("554 buildaddr: no net"); |
9577b1df EA |
1592 | badaddr: |
1593 | a->q_flags |= QBADADDR; | |
1594 | a->q_mailer = &errormailer; | |
1595 | if (errormailer.m_name == NULL) | |
1596 | { | |
1597 | /* initialize the bogus mailer */ | |
1598 | errormailer.m_name = "*error*"; | |
1599 | errormailer.m_mailer = "ERROR"; | |
1600 | errormailer.m_argv = errorargv; | |
1601 | } | |
1602 | return a; | |
fe43b434 | 1603 | } |
d6a28dd8 | 1604 | tv++; |
bc854e30 | 1605 | if (strcasecmp(*tv, "error") == 0) |
fe43b434 | 1606 | { |
2bee003d | 1607 | if ((**++tv & 0377) == CANONHOST) |
4fd73cf9 | 1608 | { |
c796f255 EA |
1609 | register struct errcodes *ep; |
1610 | ||
2bee003d | 1611 | if (isascii(**++tv) && isdigit(**tv)) |
c796f255 EA |
1612 | { |
1613 | setstat(atoi(*tv)); | |
1614 | } | |
1615 | else | |
1616 | { | |
1617 | for (ep = ErrorCodes; ep->ec_name != NULL; ep++) | |
1618 | if (strcasecmp(ep->ec_name, *tv) == 0) | |
1619 | break; | |
1620 | setstat(ep->ec_code); | |
1621 | } | |
4fd73cf9 EA |
1622 | tv++; |
1623 | } | |
b34fac73 EA |
1624 | else |
1625 | setstat(EX_UNAVAILABLE); | |
fd6cfc53 EA |
1626 | buf[0] = '\0'; |
1627 | for (; (*tv != NULL) && (**tv != CANONUSER); tv++) | |
1628 | { | |
1629 | if (buf[0] != '\0') | |
1630 | (void) strcat(buf, " "); | |
1631 | (void) strcat(buf, *tv); | |
1632 | } | |
2bee003d | 1633 | if ((**tv & 0377) != CANONUSER) |
b6edea3d | 1634 | syserr("554 buildaddr: error: no user"); |
4fcb2bfa | 1635 | cataddr(++tv, NULL, buf, sizeof buf, ' '); |
1c7897ef | 1636 | stripquotes(buf); |
fd6cfc53 EA |
1637 | #ifdef LOG |
1638 | if (LogLevel > 8) | |
1639 | syslog (LOG_DEBUG, "%s: Trace: $#ERROR $: %s", | |
1640 | CurEnv->e_id, buf); | |
1641 | #endif /* LOG */ | |
a10b59b5 EA |
1642 | if (isascii(buf[0]) && isdigit(buf[0]) && |
1643 | isascii(buf[1]) && isdigit(buf[1]) && | |
1644 | isascii(buf[2]) && isdigit(buf[2]) && | |
1645 | buf[3] == ' ') | |
1646 | { | |
1647 | char fmt[10]; | |
1648 | ||
1649 | strncpy(fmt, buf, 3); | |
1650 | strcpy(&fmt[3], " %s"); | |
1651 | usrerr(fmt, buf + 4); | |
1652 | } | |
1653 | else | |
1654 | { | |
1655 | usrerr("%s", buf); | |
1656 | } | |
9577b1df | 1657 | goto badaddr; |
fe43b434 | 1658 | } |
98e5062b | 1659 | |
179c1218 | 1660 | for (mp = Mailer; (m = *mp++) != NULL; ) |
d6a28dd8 | 1661 | { |
bc854e30 | 1662 | if (strcasecmp(m->m_name, *tv) == 0) |
d6a28dd8 EA |
1663 | break; |
1664 | } | |
1665 | if (m == NULL) | |
fe43b434 | 1666 | { |
b6edea3d | 1667 | syserr("554 buildaddr: unknown mailer %s", *tv); |
9577b1df | 1668 | goto badaddr; |
fe43b434 | 1669 | } |
179c1218 | 1670 | a->q_mailer = m; |
d6a28dd8 EA |
1671 | |
1672 | /* figure out what host (if any) */ | |
fd6cfc53 | 1673 | if (**++tv != CANONHOST) |
d6a28dd8 | 1674 | { |
6b3bbc1b EA |
1675 | a->q_host = NULL; |
1676 | } | |
1677 | else | |
1678 | { | |
fd6cfc53 EA |
1679 | else |
1680 | a->q_host = NULL; | |
1681 | } | |
1682 | else | |
1683 | { | |
fd6cfc53 EA |
1684 | while (*++tv != NULL && **tv != CANONUSER) |
1685 | (void) strcat(buf, *tv); | |
35cc3fad | 1686 | a->q_host = newstr(buf); |
d6a28dd8 | 1687 | } |
d6a28dd8 EA |
1688 | |
1689 | /* figure out the user */ | |
2bee003d | 1690 | if (*tv == NULL || (**tv & 0377) != CANONUSER) |
fe43b434 | 1691 | { |
b6edea3d | 1692 | syserr("554 buildaddr: no user"); |
9577b1df | 1693 | goto badaddr; |
fe43b434 | 1694 | } |
98e5062b EA |
1695 | tv++; |
1696 | ||
1697 | /* do special mapping for local mailer */ | |
1698 | if (m == LocalMailer && *tv != NULL) | |
1699 | { | |
7e70d3c8 EA |
1700 | register char *p = *tv; |
1701 | ||
1702 | if (*p == '"') | |
1703 | p++; | |
1704 | if (*p == '|') | |
98e5062b | 1705 | a->q_mailer = m = ProgMailer; |
7e70d3c8 | 1706 | else if (*p == '/') |
98e5062b | 1707 | a->q_mailer = m = FileMailer; |
7e70d3c8 | 1708 | else if (*p == ':') |
98e5062b EA |
1709 | { |
1710 | /* may be :include: */ | |
4fcb2bfa | 1711 | cataddr(tv, NULL, buf, sizeof buf, '\0'); |
51d9cc47 EA |
1712 | stripquotes(buf); |
1713 | if (strncasecmp(buf, ":include:", 9) == 0) | |
1714 | { | |
1715 | /* if :include:, don't need further rewriting */ | |
98e5062b | 1716 | a->q_mailer = m = InclMailer; |
51d9cc47 EA |
1717 | a->q_user = &buf[9]; |
1718 | return (a); | |
1719 | } | |
98e5062b EA |
1720 | } |
1721 | } | |
d13779b1 | 1722 | |
51d9cc47 EA |
1723 | if (m == LocalMailer && *tv != NULL && strcmp(*tv, "@") == 0) |
1724 | { | |
1725 | tv++; | |
1726 | a->q_flags |= QNOTREMOTE; | |
1727 | } | |
1728 | ||
c40bef63 EA |
1729 | if (m->m_r_rwset > 0) |
1730 | rewrite(tv, m->m_r_rwset); | |
d1db7a89 | 1731 | (void) rewrite(tv, 4, e); |
5108b0cc EA |
1732 | |
1733 | /* save the result for the command line/RCPT argument */ | |
4fcb2bfa | 1734 | cataddr(tv, NULL, buf, sizeof buf, '\0'); |
d6a28dd8 EA |
1735 | a->q_user = buf; |
1736 | ||
dd3ec3f5 EA |
1737 | /* |
1738 | ** Do mapping to lower case as requested by mailer | |
1739 | */ | |
1740 | ||
1741 | if (a->q_host != NULL && !bitnset(M_HST_UPPER, m->m_flags)) | |
1742 | makelower(a->q_host); | |
1743 | if (!bitnset(M_USR_UPPER, m->m_flags)) | |
1744 | makelower(a->q_user); | |
1745 | ||
d6a28dd8 EA |
1746 | return (a); |
1747 | } | |
9e3c0a28 | 1748 | \f/* |
31b33174 EA |
1749 | ** CATADDR -- concatenate pieces of addresses (putting in <LWSP> subs) |
1750 | ** | |
1751 | ** Parameters: | |
1752 | ** pvp -- parameter vector to rebuild. | |
4fcb2bfa EA |
1753 | ** evp -- last parameter to include. Can be NULL to |
1754 | ** use entire pvp. | |
31b33174 EA |
1755 | ** buf -- buffer to build the string into. |
1756 | ** sz -- size of buf. | |
1c7897ef EA |
1757 | ** spacesub -- the space separator character; if null, |
1758 | ** use SpaceSub. | |
31b33174 EA |
1759 | ** |
1760 | ** Returns: | |
1761 | ** none. | |
1762 | ** | |
1763 | ** Side Effects: | |
1764 | ** Destroys buf. | |
1765 | */ | |
1766 | ||
fd6cfc53 | 1767 | void |
4fcb2bfa | 1768 | cataddr(pvp, evp, buf, sz, spacesub) |
31b33174 | 1769 | char **pvp; |
4fcb2bfa | 1770 | char **evp; |
31b33174 EA |
1771 | char *buf; |
1772 | register int sz; | |
1c7897ef | 1773 | char spacesub; |
31b33174 EA |
1774 | { |
1775 | bool oatomtok = FALSE; | |
fd6cfc53 | 1776 | bool natomtok; |
31b33174 EA |
1777 | register int i; |
1778 | register char *p; | |
1779 | ||
1c7897ef EA |
1780 | if (spacesub == '\0') |
1781 | spacesub = SpaceSub; | |
1782 | ||
e93460a9 EA |
1783 | if (pvp == NULL) |
1784 | { | |
03388044 | 1785 | (void) strcpy(buf, ""); |
e93460a9 EA |
1786 | return; |
1787 | } | |
31b33174 | 1788 | p = buf; |
89dd4c8f | 1789 | sz -= 2; |
31b33174 EA |
1790 | while (*pvp != NULL && (i = strlen(*pvp)) < sz) |
1791 | { | |
506fc377 | 1792 | natomtok = (toktype(**pvp) == ATM); |
31b33174 | 1793 | if (oatomtok && natomtok) |
1c7897ef | 1794 | *p++ = spacesub; |
31b33174 EA |
1795 | (void) strcpy(p, *pvp); |
1796 | oatomtok = natomtok; | |
1797 | p += i; | |
89dd4c8f | 1798 | sz -= i + 1; |
4fcb2bfa EA |
1799 | if (pvp++ == evp) |
1800 | break; | |
31b33174 EA |
1801 | } |
1802 | *p = '\0'; | |
1803 | } | |
1804 | \f/* | |
9e3c0a28 EA |
1805 | ** SAMEADDR -- Determine if two addresses are the same |
1806 | ** | |
1807 | ** This is not just a straight comparison -- if the mailer doesn't | |
1808 | ** care about the host we just ignore it, etc. | |
1809 | ** | |
1810 | ** Parameters: | |
1811 | ** a, b -- pointers to the internal forms to compare. | |
9e3c0a28 EA |
1812 | ** |
1813 | ** Returns: | |
1814 | ** TRUE -- they represent the same mailbox. | |
1815 | ** FALSE -- they don't. | |
1816 | ** | |
1817 | ** Side Effects: | |
1818 | ** none. | |
1819 | */ | |
1820 | ||
1821 | bool | |
7338e3d4 | 1822 | sameaddr(a, b) |
9e3c0a28 EA |
1823 | register ADDRESS *a; |
1824 | register ADDRESS *b; | |
9e3c0a28 EA |
1825 | { |
1826 | /* if they don't have the same mailer, forget it */ | |
1827 | if (a->q_mailer != b->q_mailer) | |
1828 | return (FALSE); | |
1829 | ||
1830 | /* if the user isn't the same, we can drop out */ | |
fd6cfc53 | 1831 | if (strcasecmp(a->q_user, b->q_user)) |
9e3c0a28 EA |
1832 | return (FALSE); |
1833 | ||
4e535265 EA |
1834 | /* if we have good uids for both but the differ, these are different */ |
1835 | if (bitset(QGOODUID, a->q_flags & b->q_flags) && a->q_uid != b->q_uid) | |
1836 | return (FALSE); | |
1837 | ||
9e3c0a28 | 1838 | /* otherwise compare hosts (but be careful for NULL ptrs) */ |
fa085f58 EA |
1839 | if (a->q_host == b->q_host) |
1840 | { | |
1841 | /* probably both null pointers */ | |
1842 | return (TRUE); | |
1843 | } | |
9e3c0a28 | 1844 | if (a->q_host == NULL || b->q_host == NULL) |
fa085f58 EA |
1845 | { |
1846 | /* only one is a null pointer */ | |
9e3c0a28 | 1847 | return (FALSE); |
fa085f58 | 1848 | } |
fd6cfc53 | 1849 | if (strcasecmp(a->q_host, b->q_host)) |
9e3c0a28 EA |
1850 | return (FALSE); |
1851 | ||
1852 | return (TRUE); | |
1853 | } | |
779597d8 EA |
1854 | \f/* |
1855 | ** PRINTADDR -- print address (for debugging) | |
1856 | ** | |
1857 | ** Parameters: | |
1858 | ** a -- the address to print | |
1859 | ** follow -- follow the q_next chain. | |
1860 | ** | |
1861 | ** Returns: | |
1862 | ** none. | |
1863 | ** | |
1864 | ** Side Effects: | |
1865 | ** none. | |
1866 | */ | |
1867 | ||
fd6cfc53 | 1868 | void |
779597d8 EA |
1869 | printaddr(a, follow) |
1870 | register ADDRESS *a; | |
1871 | bool follow; | |
1872 | { | |
d4f42161 | 1873 | bool first = TRUE; |
78bbbc48 EA |
1874 | register MAILER *m; |
1875 | MAILER pseudomailer; | |
d4f42161 | 1876 | |
abae7b2d EA |
1877 | static int indent; |
1878 | register int i; | |
1879 | ||
779597d8 EA |
1880 | while (a != NULL) |
1881 | { | |
d4f42161 | 1882 | first = FALSE; |
abae7b2d EA |
1883 | for (i = indent; i > 0; i--) |
1884 | printf("\t"); | |
331b7c9f | 1885 | printf("%x=", a); |
29871fef | 1886 | (void) fflush(stdout); |
78bbbc48 EA |
1887 | |
1888 | /* find the mailer -- carefully */ | |
1889 | m = a->q_mailer; | |
1890 | if (m == NULL) | |
1891 | { | |
1892 | m = &pseudomailer; | |
1893 | m->m_mno = -1; | |
1894 | m->m_name = "NULL"; | |
1895 | } | |
1896 | ||
abae7b2d EA |
1897 | for (i = indent; i > 0; i--) |
1898 | printf("\t"); | |
1899 | printf("\tnext=%x, flags=%o, rmailer %d, alias=%x, sibling=%x, child=%x\n", | |
1900 | a->q_next, a->q_flags, a->q_rmailer, a->q_alias, | |
1901 | a->q_sibling, a->q_child); | |
1902 | ||
1903 | /* follow the chain if appropriate */ | |
779597d8 EA |
1904 | if (!follow) |
1905 | return; | |
abae7b2d EA |
1906 | |
1907 | indent++; | |
1908 | printaddr(a->q_child, TRUE); | |
1909 | indent--; | |
1910 | a = a->q_sibling; | |
779597d8 | 1911 | } |
d4f42161 | 1912 | if (first) |
331b7c9f | 1913 | printf("[NULL]\n"); |
779597d8 | 1914 | } |
74c5fe7c | 1915 | |
22892d62 EA |
1916 | \f/* |
1917 | ** REMOTENAME -- return the name relative to the current mailer | |
1918 | ** | |
1919 | ** Parameters: | |
1920 | ** name -- the name to translate. | |
b00e6882 EA |
1921 | ** m -- the mailer that we want to do rewriting relative |
1922 | ** to. | |
9e43a19e EA |
1923 | ** flags -- fine tune operations. |
1924 | ** pstat -- pointer to status word. | |
68f7099c | 1925 | ** e -- the current envelope. |
22892d62 EA |
1926 | ** |
1927 | ** Returns: | |
1928 | ** the text string representing this address relative to | |
1929 | ** the receiving mailer. | |
1930 | ** | |
1931 | ** Side Effects: | |
1932 | ** none. | |
1933 | ** | |
1934 | ** Warnings: | |
1935 | ** The text string returned is tucked away locally; | |
1936 | ** copy it if you intend to save it. | |
1937 | */ | |
1938 | ||
1939 | char * | |
9e43a19e | 1940 | remotename(name, m, flags, pstat, e) |
22892d62 | 1941 | char *name; |
fd6cfc53 | 1942 | MAILER *m; |
9e43a19e EA |
1943 | int flags; |
1944 | int *pstat; | |
a4076aed | 1945 | register ENVELOPE *e; |
22892d62 | 1946 | { |
b00e6882 EA |
1947 | register char **pvp; |
1948 | char *fancy; | |
a4076aed | 1949 | char *oldg = macvalue('g', e); |
68f7099c | 1950 | int rwset; |
b00e6882 EA |
1951 | static char buf[MAXNAME]; |
1952 | char lbuf[MAXNAME]; | |
217a0102 | 1953 | char pvpbuf[PSBUFSIZE]; |
22892d62 | 1954 | |
e4b94f39 EA |
1955 | if (tTd(12, 1)) |
1956 | printf("remotename(%s)\n", name); | |
e4b94f39 | 1957 | |
4db45bf1 | 1958 | /* don't do anything if we are tagging it as special */ |
c40bef63 | 1959 | if ((senderaddress ? m->m_s_rwset : m->m_r_rwset) < 0) |
4db45bf1 EA |
1960 | return (name); |
1961 | ||
22892d62 | 1962 | /* |
857afefe EA |
1963 | ** Do a heuristic crack of this name to extract any comment info. |
1964 | ** This will leave the name as a comment and a $g macro. | |
22892d62 EA |
1965 | */ |
1966 | ||
9e43a19e | 1967 | if (bitset(RF_CANONICAL, flags) || bitnset(M_NOCOMMENT, m->m_flags)) |
2bee003d | 1968 | fancy = "\201g"; |
532c9874 EA |
1969 | else |
1970 | fancy = crackaddr(name); | |
0908f182 | 1971 | |
857afefe EA |
1972 | /* |
1973 | ** Turn the name into canonical form. | |
1974 | ** Normally this will be RFC 822 style, i.e., "user@domain". | |
1975 | ** If this only resolves to "user", and the "C" flag is | |
1976 | ** specified in the sending mailer, then the sender's | |
1977 | ** domain will be appended. | |
1978 | */ | |
1979 | ||
9e2cf26f | 1980 | pvp = prescan(name, '\0', pvpbuf, NULL); |
0908f182 | 1981 | if (pvp == NULL) |
22892d62 | 1982 | return (name); |
9e43a19e EA |
1983 | if (rewrite(pvp, 3, e) == EX_TEMPFAIL) |
1984 | *pstat = EX_TEMPFAIL; | |
1985 | if (bitset(RF_ADDDOMAIN, flags) && e->e_fromdomain != NULL) | |
857afefe EA |
1986 | { |
1987 | /* append from domain to this address */ | |
1988 | register char **pxp = pvp; | |
1989 | ||
18c3cee9 | 1990 | /* see if there is an "@domain" in the current name */ |
857afefe EA |
1991 | while (*pxp != NULL && strcmp(*pxp, "@") != 0) |
1992 | pxp++; | |
1993 | if (*pxp == NULL) | |
1994 | { | |
18c3cee9 | 1995 | /* no.... append the "@domain" from the sender */ |
a4076aed | 1996 | register char **qxq = e->e_fromdomain; |
857afefe | 1997 | |
18c3cee9 EA |
1998 | while ((*pxp++ = *qxq++) != NULL) |
1999 | continue; | |
9e43a19e EA |
2000 | if (rewrite(pvp, 3, e) == EX_TEMPFAIL) |
2001 | *pstat = EX_TEMPFAIL; | |
857afefe EA |
2002 | } |
2003 | } | |
2004 | ||
2005 | /* | |
b726abe3 | 2006 | ** Do more specific rewriting. |
fd6cfc53 EA |
2007 | ** Rewrite using ruleset 1 or 2 for envelope addresses and |
2008 | ** 5 or 6 for header addresses depending on whether this | |
2009 | ** is a sender address or not. | |
857afefe EA |
2010 | ** Then run it through any receiving-mailer-specific rulesets. |
2011 | */ | |
2012 | ||
b00e6882 | 2013 | else |
9e4c75d5 | 2014 | { |
68f7099c | 2015 | if (rwset > 0) |
9e4c75d5 | 2016 | { |
9e43a19e EA |
2017 | if (rewrite(pvp, rwset, e) == EX_TEMPFAIL) |
2018 | *pstat = EX_TEMPFAIL; | |
9e4c75d5 | 2019 | } |
22892d62 | 2020 | |
b726abe3 EA |
2021 | /* |
2022 | ** Do any final sanitation the address may require. | |
2023 | ** This will normally be used to turn internal forms | |
2024 | ** (e.g., user@host.LOCAL) into external form. This | |
2025 | ** may be used as a default to the above rules. | |
2026 | */ | |
2027 | ||
9e43a19e EA |
2028 | if (rewrite(pvp, 4, e) == EX_TEMPFAIL) |
2029 | *pstat = EX_TEMPFAIL; | |
b726abe3 | 2030 | |
857afefe EA |
2031 | /* |
2032 | ** Now restore the comment information we had at the beginning. | |
2033 | */ | |
2034 | ||
9d6aecfd | 2035 | cataddr(pvp, NULL, lbuf, sizeof lbuf, '\0'); |
a4076aed EA |
2036 | define('g', lbuf, e); |
2037 | expand(fancy, buf, &buf[sizeof buf - 1], e); | |
2038 | define('g', oldg, e); | |
22892d62 | 2039 | |
22892d62 | 2040 | if (tTd(12, 1)) |
e4b94f39 | 2041 | printf("remotename => `%s'\n", buf); |
22892d62 EA |
2042 | return (buf); |
2043 | } | |
d13779b1 | 2044 | \f/* |
fd6cfc53 EA |
2045 | ** UURELATIVIZE -- Make an address !-relative to recipient/sender nodes |
2046 | ** | |
2047 | ** Parameters: | |
2048 | ** from -- the sending node (usually "$k" or "$w") | |
2049 | ** to -- the receiving node (usually "$h") | |
2050 | ** pvp -- address vector | |
2051 | ** | |
2052 | ** Returns: | |
2053 | ** none. | |
2054 | ** | |
2055 | ** Side Effects: | |
2056 | ** The pvp is rewritten to be relative the "to" node | |
2057 | ** wrt the "from" node. In other words, if the pvp | |
2058 | ** is headed by "to!" that part is stripped; otherwise | |
2059 | ** "from!" is prepended. Exception: "to!user" addresses | |
2060 | ** with no '!'s in the user part are sent as is. | |
2061 | ** | |
2062 | ** Bugs: | |
2063 | ** The pvp may overflow, but we don't catch it. | |
2064 | */ | |
2065 | ||
2066 | static void | |
2067 | uurelativize(from, to, pvp) | |
2068 | const char *from, *to; | |
2069 | char **pvp; | |
2070 | { | |
2071 | register char **pxp = pvp; | |
2072 | char expfrom[MAXNAME], expto[MAXNAME]; | |
2073 | ||
2074 | expand(from, expfrom, &expfrom[sizeof expfrom - 1], CurEnv); | |
2075 | expand(to, expto, &expto[sizeof expto - 1], CurEnv); | |
2076 | ||
2077 | /* | |
2078 | * supposing that we've got something, should | |
2079 | * we add "from!" or remove "to!"? | |
2080 | */ | |
2081 | if (pvp[0] != NULL) | |
2082 | if (pvp[1] == NULL || strcmp(pvp[1], "!") != 0 || | |
2083 | /*strcasecmp?*/ strcmp(pvp[0], expto) != 0) | |
2084 | { | |
2085 | /* either local name, no UUCP address, */ | |
2086 | /* or not to "to!" ==> prepend address with "from!" */ | |
2087 | ||
2088 | /* already there? */ | |
2089 | if (pvp[1] == NULL || strcmp(pvp[1], "!") != 0 || | |
2090 | /*strcasecmp?*/ strcmp(pvp[0], expfrom) != 0) | |
2091 | { | |
2092 | ||
2093 | /* no, put it there */ | |
2094 | while (*pxp != NULL) | |
2095 | pxp++; | |
2096 | do | |
2097 | pxp[2] = *pxp; | |
2098 | while (pxp-- != pvp); | |
2099 | pvp[0] = newstr(expfrom); | |
2100 | pvp[1] = "!"; | |
2101 | } | |
2102 | } | |
2103 | else | |
2104 | { | |
2105 | /* address is to "to!" -- remove if not "to!user" */ | |
2106 | for (pxp = &pvp[2]; | |
2107 | *pxp != NULL && strcmp(*pxp, "!") != 0; pxp++) | |
2108 | ; | |
2109 | if (*pxp != NULL) | |
2110 | for (pxp = pvp; *pxp != NULL; pxp++) | |
2111 | *pxp = pxp[2]; | |
2112 | } | |
2113 | } | |
2114 | \f/* | |
d13779b1 EA |
2115 | ** MAPLOCALUSER -- run local username through ruleset 5 for final redirection |
2116 | ** | |
2117 | ** Parameters: | |
2118 | ** a -- the address to map (but just the user name part). | |
2119 | ** sendq -- the sendq in which to install any replacement | |
2120 | ** addresses. | |
2121 | ** | |
2122 | ** Returns: | |
2123 | ** none. | |
2124 | */ | |
2125 | ||
a4076aed | 2126 | maplocaluser(a, sendq, e) |
d13779b1 EA |
2127 | register ADDRESS *a; |
2128 | ADDRESS **sendq; | |
a4076aed | 2129 | ENVELOPE *e; |
d13779b1 EA |
2130 | { |
2131 | register char **pvp; | |
2132 | register ADDRESS *a1 = NULL; | |
9e2cf26f | 2133 | auto char *delimptr; |
d13779b1 EA |
2134 | char pvpbuf[PSBUFSIZE]; |
2135 | ||
2136 | if (tTd(29, 1)) | |
2137 | { | |
2138 | printf("maplocaluser: "); | |
2139 | printaddr(a, FALSE); | |
2140 | } | |
9e2cf26f | 2141 | pvp = prescan(a->q_user, '\0', pvpbuf, &delimptr); |
d13779b1 EA |
2142 | if (pvp == NULL) |
2143 | return; | |
2144 | ||
d1db7a89 | 2145 | (void) rewrite(pvp, 5, e); |
2bee003d | 2146 | if (pvp[0] == NULL || (pvp[0][0] & 0377) != CANONNET) |
d13779b1 EA |
2147 | return; |
2148 | ||
2149 | /* if non-null, mailer destination specified -- has it changed? */ | |
28f94061 | 2150 | a1 = buildaddr(pvp, NULL, 0, e); |
d13779b1 EA |
2151 | if (a1 == NULL || sameaddr(a, a1)) |
2152 | return; | |
2153 | ||
2154 | /* mark old address as dead; insert new address */ | |
2155 | a->q_flags |= QDONTSEND; | |
78bbbc48 EA |
2156 | if (tTd(29, 5)) |
2157 | { | |
2158 | printf("maplocaluser: QDONTSEND "); | |
2159 | printaddr(a, FALSE); | |
2160 | } | |
d13779b1 | 2161 | a1->q_alias = a; |
dab5fedb | 2162 | allocaddr(a1, RF_COPYALL, NULL); |
a4076aed | 2163 | (void) recipient(a1, sendq, e); |
d13779b1 | 2164 | } |
28d46d78 EA |
2165 | \f/* |
2166 | ** DEQUOTE_INIT -- initialize dequote map | |
2167 | ** | |
2168 | ** This is a no-op. | |
2169 | ** | |
2170 | ** Parameters: | |
2171 | ** map -- the internal map structure. | |
28d46d78 EA |
2172 | ** args -- arguments. |
2173 | ** | |
2174 | ** Returns: | |
2175 | ** TRUE. | |
2176 | */ | |
2177 | ||
2178 | bool | |
9114f86c | 2179 | dequote_init(map, args) |
28d46d78 | 2180 | MAP *map; |
28d46d78 EA |
2181 | char *args; |
2182 | { | |
5111538e EA |
2183 | register char *p = args; |
2184 | ||
2185 | for (;;) | |
2186 | { | |
2187 | while (isascii(*p) && isspace(*p)) | |
2188 | p++; | |
2189 | if (*p != '-') | |
2190 | break; | |
2191 | switch (*++p) | |
2192 | { | |
2193 | case 'a': | |
2194 | map->map_app = ++p; | |
2195 | break; | |
2196 | } | |
2197 | while (*p != '\0' && !(isascii(*p) && isspace(*p))) | |
2198 | p++; | |
2199 | if (*p != '\0') | |
2200 | *p = '\0'; | |
2201 | } | |
2202 | if (map->map_app != NULL) | |
2203 | map->map_app = newstr(map->map_app); | |
2204 | ||
28d46d78 EA |
2205 | return TRUE; |
2206 | } | |
2207 | \f/* | |
2208 | ** DEQUOTE_MAP -- unquote an address | |
2209 | ** | |
2210 | ** Parameters: | |
2211 | ** map -- the internal map structure (ignored). | |
713c523f | 2212 | ** name -- the name to dequote. |
28d46d78 | 2213 | ** av -- arguments (ignored). |
d1db7a89 | 2214 | ** statp -- pointer to status out-parameter. |
28d46d78 EA |
2215 | ** |
2216 | ** Returns: | |
2217 | ** NULL -- if there were no quotes, or if the resulting | |
2218 | ** unquoted buffer would not be acceptable to prescan. | |
2219 | ** else -- The dequoted buffer. | |
2220 | */ | |
2221 | ||
2222 | char * | |
713c523f | 2223 | dequote_map(map, name, av, statp) |
28d46d78 | 2224 | MAP *map; |
713c523f | 2225 | char *name; |
28d46d78 | 2226 | char **av; |
d1db7a89 | 2227 | int *statp; |
28d46d78 EA |
2228 | { |
2229 | register char *p; | |
2230 | register char *q; | |
2231 | register char c; | |
2232 | int anglecnt; | |
2233 | int cmntcnt; | |
2234 | int quotecnt; | |
493ddf6a | 2235 | int spacecnt; |
28d46d78 EA |
2236 | bool quotemode; |
2237 | bool bslashmode; | |
2238 | ||
2239 | anglecnt = 0; | |
2240 | cmntcnt = 0; | |
2241 | quotecnt = 0; | |
493ddf6a | 2242 | spacecnt = 0; |
28d46d78 EA |
2243 | quotemode = FALSE; |
2244 | bslashmode = FALSE; | |
2245 | ||
713c523f | 2246 | for (p = q = name; (c = *p++) != '\0'; ) |
28d46d78 EA |
2247 | { |
2248 | if (bslashmode) | |
2249 | { | |
2250 | bslashmode = FALSE; | |
2251 | *q++ = c; | |
2252 | continue; | |
2253 | } | |
2254 | ||
2255 | switch (c) | |
2256 | { | |
2257 | case '\\': | |
2258 | bslashmode = TRUE; | |
2259 | break; | |
2260 | ||
2261 | case '(': | |
2262 | cmntcnt++; | |
2263 | break; | |
2264 | ||
2265 | case ')': | |
2266 | if (cmntcnt-- <= 0) | |
2267 | return NULL; | |
2268 | break; | |
493ddf6a EA |
2269 | |
2270 | case ' ': | |
2271 | spacecnt++; | |
2272 | break; | |
28d46d78 EA |
2273 | } |
2274 | ||
2275 | if (cmntcnt > 0) | |
2276 | { | |
2277 | *q++ = c; | |
2278 | continue; | |
2279 | } | |
2280 | ||
2281 | switch (c) | |
2282 | { | |
2283 | case '"': | |
2284 | quotemode = !quotemode; | |
2285 | quotecnt++; | |
2286 | continue; | |
2287 | ||
2288 | case '<': | |
2289 | anglecnt++; | |
2290 | break; | |
2291 | ||
2292 | case '>': | |
2293 | if (anglecnt-- <= 0) | |
2294 | return NULL; | |
2295 | break; | |
2296 | } | |
2297 | *q++ = c; | |
2298 | } | |
2299 | ||
2300 | if (anglecnt != 0 || cmntcnt != 0 || bslashmode || | |
493ddf6a | 2301 | quotemode || quotecnt <= 0 || spacecnt != 0) |
28d46d78 EA |
2302 | return NULL; |
2303 | *q++ = '\0'; | |
713c523f | 2304 | return name; |
28d46d78 | 2305 | } |