]>
Commit | Line | Data |
---|---|---|
63115431 TL |
1 | /* parse.c |
2 | ||
3 | Common parser code for dhcpd and dhclient. */ | |
4 | ||
5 | /* | |
706792c9 | 6 | * Copyright (c) 2004-2007 by Internet Systems Consortium, Inc. ("ISC") |
98311e4b | 7 | * Copyright (c) 1995-2003 by Internet Software Consortium |
63115431 | 8 | * |
98311e4b DH |
9 | * Permission to use, copy, modify, and distribute this software for any |
10 | * purpose with or without fee is hereby granted, provided that the above | |
11 | * copyright notice and this permission notice appear in all copies. | |
63115431 | 12 | * |
98311e4b DH |
13 | * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES |
14 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
15 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR | |
16 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
17 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT | |
19 | * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
63115431 | 20 | * |
98311e4b DH |
21 | * Internet Systems Consortium, Inc. |
22 | * 950 Charter Street | |
23 | * Redwood City, CA 94063 | |
24 | * <info@isc.org> | |
25 | * http://www.isc.org/ | |
49733f31 | 26 | * |
98311e4b | 27 | * This software has been written for Internet Systems Consortium |
49733f31 | 28 | * by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc. |
98311e4b | 29 | * To learn more about Internet Systems Consortium, see |
49733f31 TL |
30 | * ``http://www.isc.org/''. To learn more about Vixie Enterprises, |
31 | * see ``http://www.vix.com''. To learn more about Nominum, Inc., see | |
32 | * ``http://www.nominum.com''. | |
63115431 TL |
33 | */ |
34 | ||
35 | #ifndef lint | |
36 | static char copyright[] = | |
b55d0d5f | 37 | "$Id: parse.c,v 1.129 2007/06/27 18:25:15 each Exp $ Copyright (c) 2004-2007 Internet Systems Consortium. All rights reserved.\n"; |
63115431 TL |
38 | #endif /* not lint */ |
39 | ||
40 | #include "dhcpd.h" | |
fe5b0fdd | 41 | #include <syslog.h> |
63115431 | 42 | |
42c6a803 TL |
43 | /* Enumerations can be specified in option formats, and are used for |
44 | parsing, so we define the routines that manage them here. */ | |
45 | ||
46 | struct enumeration *enumerations; | |
47 | ||
48 | void add_enumeration (struct enumeration *enumeration) | |
49 | { | |
50 | enumeration -> next = enumerations; | |
51 | enumerations = enumeration; | |
52 | } | |
53 | ||
54 | struct enumeration *find_enumeration (const char *name, int length) | |
55 | { | |
56 | struct enumeration *e; | |
57 | ||
58 | for (e = enumerations; e; e = e -> next) | |
59 | if (strlen (e -> name) == length && | |
60 | !memcmp (e -> name, name, (unsigned)length)) | |
61 | return e; | |
62 | return (struct enumeration *)0; | |
63 | } | |
64 | ||
65 | struct enumeration_value *find_enumeration_value (const char *name, | |
66 | int length, | |
67 | const char *value) | |
68 | { | |
69 | struct enumeration *e; | |
70 | int i; | |
71 | ||
72 | e = find_enumeration (name, length); | |
73 | if (e) { | |
74 | for (i = 0; e -> values [i].name; i++) { | |
75 | if (!strcmp (value, e -> values [i].name)) | |
76 | return &e -> values [i]; | |
77 | } | |
78 | } | |
79 | return (struct enumeration_value *)0; | |
80 | } | |
81 | ||
63115431 TL |
82 | /* Skip to the semicolon ending the current statement. If we encounter |
83 | braces, the matching closing brace terminates the statement. If we | |
84 | encounter a right brace but haven't encountered a left brace, return | |
85 | leaving the brace in the token buffer for the caller. If we see a | |
86 | semicolon and haven't seen a left brace, return. This lets us skip | |
87 | over: | |
88 | ||
89 | statement; | |
90 | statement foo bar { } | |
91 | statement foo bar { statement { } } | |
92 | statement} | |
93 | ||
94 | ...et cetera. */ | |
95 | ||
96 | void skip_to_semi (cfile) | |
4615d498 | 97 | struct parse *cfile; |
cea8b5c9 TL |
98 | { |
99 | skip_to_rbrace (cfile, 0); | |
100 | } | |
101 | ||
102 | void skip_to_rbrace (cfile, brace_count) | |
4615d498 | 103 | struct parse *cfile; |
cea8b5c9 | 104 | int brace_count; |
63115431 | 105 | { |
02a015fb | 106 | enum dhcp_token token; |
b1b7b521 | 107 | const char *val; |
63115431 | 108 | |
f579f39f TL |
109 | #if defined (DEBUG_TOKEN) |
110 | log_error ("skip_to_rbrace: %d\n", brace_count); | |
111 | #endif | |
63115431 | 112 | do { |
b3519f23 | 113 | token = peek_token (&val, (unsigned *)0, cfile); |
63115431 | 114 | if (token == RBRACE) { |
b3519f23 | 115 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 116 | if (brace_count) { |
63115431 TL |
117 | if (!--brace_count) |
118 | return; | |
119 | } else | |
120 | return; | |
121 | } else if (token == LBRACE) { | |
122 | brace_count++; | |
123 | } else if (token == SEMI && !brace_count) { | |
b3519f23 | 124 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 125 | return; |
796ef008 TL |
126 | } else if (token == EOL) { |
127 | /* EOL only happens when parsing /etc/resolv.conf, | |
128 | and we treat it like a semicolon because the | |
129 | resolv.conf file is line-oriented. */ | |
b3519f23 | 130 | token = next_token (&val, (unsigned *)0, cfile); |
796ef008 | 131 | return; |
63115431 | 132 | } |
b3519f23 | 133 | token = next_token (&val, (unsigned *)0, cfile); |
0b69dcc8 | 134 | } while (token != END_OF_FILE); |
63115431 TL |
135 | } |
136 | ||
137 | int parse_semi (cfile) | |
4615d498 | 138 | struct parse *cfile; |
63115431 | 139 | { |
02a015fb | 140 | enum dhcp_token token; |
b1b7b521 | 141 | const char *val; |
63115431 | 142 | |
b3519f23 | 143 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 144 | if (token != SEMI) { |
4615d498 | 145 | parse_warn (cfile, "semicolon expected."); |
63115431 TL |
146 | skip_to_semi (cfile); |
147 | return 0; | |
148 | } | |
149 | return 1; | |
150 | } | |
151 | ||
152 | /* string-parameter :== STRING SEMI */ | |
153 | ||
b3519f23 | 154 | int parse_string (cfile, sptr, lptr) |
4615d498 | 155 | struct parse *cfile; |
b3519f23 TL |
156 | char **sptr; |
157 | unsigned *lptr; | |
63115431 | 158 | { |
b1b7b521 | 159 | const char *val; |
02a015fb | 160 | enum dhcp_token token; |
63115431 | 161 | char *s; |
b3519f23 | 162 | unsigned len; |
63115431 | 163 | |
b3519f23 | 164 | token = next_token (&val, &len, cfile); |
63115431 | 165 | if (token != STRING) { |
f769d5ac | 166 | parse_warn (cfile, "expecting a string"); |
63115431 | 167 | skip_to_semi (cfile); |
b3519f23 | 168 | return 0; |
63115431 | 169 | } |
b3519f23 | 170 | s = (char *)dmalloc (len + 1, MDL); |
63115431 | 171 | if (!s) |
8ae2d595 | 172 | log_fatal ("no memory for string %s.", val); |
b3519f23 | 173 | memcpy (s, val, len + 1); |
63115431 | 174 | |
b3519f23 TL |
175 | if (!parse_semi (cfile)) { |
176 | dfree (s, MDL); | |
177 | return 0; | |
178 | } | |
179 | if (sptr) | |
180 | *sptr = s; | |
181 | else | |
182 | dfree (s, MDL); | |
183 | if (lptr) | |
184 | *lptr = len; | |
185 | return 1; | |
63115431 TL |
186 | } |
187 | ||
be6be08d TL |
188 | /* |
189 | * hostname :== IDENTIFIER | |
190 | * | IDENTIFIER DOT | |
191 | * | hostname DOT IDENTIFIER | |
192 | */ | |
796ef008 TL |
193 | |
194 | char *parse_host_name (cfile) | |
4615d498 | 195 | struct parse *cfile; |
796ef008 | 196 | { |
b1b7b521 | 197 | const char *val; |
02a015fb | 198 | enum dhcp_token token; |
b1b7b521 | 199 | unsigned len = 0; |
796ef008 TL |
200 | char *s; |
201 | char *t; | |
202 | pair c = (pair)0; | |
88ab5737 | 203 | int ltid = 0; |
796ef008 TL |
204 | |
205 | /* Read a dotted hostname... */ | |
206 | do { | |
207 | /* Read a token, which should be an identifier. */ | |
b3519f23 | 208 | token = peek_token (&val, (unsigned *)0, cfile); |
68dda014 TL |
209 | if (!is_identifier (token) && token != NUMBER) |
210 | break; | |
b3519f23 | 211 | token = next_token (&val, (unsigned *)0, cfile); |
68dda014 | 212 | |
796ef008 | 213 | /* Store this identifier... */ |
fdac15d9 | 214 | if (!(s = (char *)dmalloc (strlen (val) + 1, MDL))) |
8ae2d595 | 215 | log_fatal ("can't allocate temp space for hostname."); |
796ef008 TL |
216 | strcpy (s, val); |
217 | c = cons ((caddr_t)s, c); | |
218 | len += strlen (s) + 1; | |
219 | /* Look for a dot; if it's there, keep going, otherwise | |
220 | we're done. */ | |
b3519f23 | 221 | token = peek_token (&val, (unsigned *)0, cfile); |
88ab5737 | 222 | if (token == DOT) { |
b3519f23 | 223 | token = next_token (&val, (unsigned *)0, cfile); |
88ab5737 TL |
224 | ltid = 1; |
225 | } else | |
226 | ltid = 0; | |
796ef008 TL |
227 | } while (token == DOT); |
228 | ||
fa392aea TL |
229 | /* Should be at least one token. */ |
230 | if (!len) | |
231 | return (char *)0; | |
232 | ||
796ef008 | 233 | /* Assemble the hostname together into a string. */ |
88ab5737 | 234 | if (!(s = (char *)dmalloc (len + ltid, MDL))) |
8ae2d595 | 235 | log_fatal ("can't allocate space for hostname."); |
88ab5737 | 236 | t = s + len + ltid; |
796ef008 | 237 | *--t = 0; |
88ab5737 TL |
238 | if (ltid) |
239 | *--t = '.'; | |
796ef008 TL |
240 | while (c) { |
241 | pair cdr = c -> cdr; | |
b1b7b521 | 242 | unsigned l = strlen ((char *)(c -> car)); |
796ef008 TL |
243 | t -= l; |
244 | memcpy (t, (char *)(c -> car), l); | |
245 | /* Free up temp space. */ | |
fdac15d9 TL |
246 | dfree (c -> car, MDL); |
247 | dfree (c, MDL); | |
796ef008 TL |
248 | c = cdr; |
249 | if (t != s) | |
250 | *--t = '.'; | |
251 | } | |
252 | return s; | |
253 | } | |
254 | ||
be6be08d TL |
255 | /* ip-addr-or-hostname :== ip-address | hostname |
256 | ip-address :== NUMBER DOT NUMBER DOT NUMBER DOT NUMBER | |
257 | ||
258 | Parse an ip address or a hostname. If uniform is zero, put in | |
259 | an expr_substring node to limit hostnames that evaluate to more | |
66eaae18 SK |
260 | than one IP address. |
261 | ||
262 | Note that RFC1123 permits hostnames to consist of all digits, | |
263 | making it difficult to quickly disambiguate them from ip addresses. | |
264 | */ | |
be6be08d | 265 | |
02a015fb TL |
266 | int parse_ip_addr_or_hostname (expr, cfile, uniform) |
267 | struct expression **expr; | |
4615d498 | 268 | struct parse *cfile; |
be6be08d TL |
269 | int uniform; |
270 | { | |
b1b7b521 | 271 | const char *val; |
02a015fb | 272 | enum dhcp_token token; |
be6be08d | 273 | unsigned char addr [4]; |
b1b7b521 | 274 | unsigned len = sizeof addr; |
be6be08d | 275 | char *name; |
02a015fb | 276 | struct expression *x = (struct expression *)0; |
66eaae18 | 277 | int ipaddr = 0; |
be6be08d | 278 | |
b3519f23 | 279 | token = peek_token (&val, (unsigned *)0, cfile); |
66eaae18 SK |
280 | |
281 | if (token == NUMBER) { | |
282 | /* | |
283 | * a hostname may be numeric, but domain names must | |
284 | * start with a letter, so we can disambiguate by | |
285 | * looking ahead a few tokens. we save the parse | |
286 | * context first, and restore it after we know what | |
287 | * we're dealing with. | |
288 | */ | |
bda33169 | 289 | save_parse_state(cfile); |
66eaae18 SK |
290 | (void) next_token(NULL, NULL, cfile); |
291 | if (next_token(NULL, NULL, cfile) == DOT && | |
292 | next_token(NULL, NULL, cfile) == NUMBER) | |
293 | ipaddr = 1; | |
bda33169 | 294 | restore_parse_state(cfile); |
66eaae18 SK |
295 | |
296 | if (ipaddr && | |
297 | parse_numeric_aggregate (cfile, addr, &len, DOT, 10, 8)) | |
298 | return make_const_data (expr, addr, len, 0, 1, MDL); | |
299 | ||
300 | } | |
301 | ||
302 | if (is_identifier (token) || token == NUMBER) { | |
be6be08d TL |
303 | name = parse_host_name (cfile); |
304 | if (!name) | |
02a015fb | 305 | return 0; |
98311e4b DH |
306 | if (!make_host_lookup (expr, name)) { |
307 | dfree(name, MDL); | |
02a015fb | 308 | return 0; |
98311e4b DH |
309 | } |
310 | dfree(name, MDL); | |
02a015fb TL |
311 | if (!uniform) { |
312 | if (!make_limit (&x, *expr, 4)) | |
313 | return 0; | |
4bd8800e | 314 | expression_dereference (expr, MDL); |
02a015fb TL |
315 | *expr = x; |
316 | } | |
be6be08d TL |
317 | } else { |
318 | if (token != RBRACE && token != LBRACE) | |
b3519f23 | 319 | token = next_token (&val, (unsigned *)0, cfile); |
4615d498 | 320 | parse_warn (cfile, "%s (%d): expecting IP address or hostname", |
be6be08d TL |
321 | val, token); |
322 | if (token != SEMI) | |
323 | skip_to_semi (cfile); | |
02a015fb | 324 | return 0; |
be6be08d TL |
325 | } |
326 | ||
02a015fb | 327 | return 1; |
be6be08d TL |
328 | } |
329 | ||
330 | /* | |
331 | * ip-address :== NUMBER DOT NUMBER DOT NUMBER DOT NUMBER | |
332 | */ | |
333 | ||
796ef008 | 334 | int parse_ip_addr (cfile, addr) |
4615d498 | 335 | struct parse *cfile; |
796ef008 TL |
336 | struct iaddr *addr; |
337 | { | |
b1b7b521 | 338 | const char *val; |
02a015fb | 339 | enum dhcp_token token; |
796ef008 TL |
340 | |
341 | addr -> len = 4; | |
342 | if (parse_numeric_aggregate (cfile, addr -> iabuf, | |
343 | &addr -> len, DOT, 10, 8)) | |
344 | return 1; | |
345 | return 0; | |
346 | } | |
347 | ||
98bd7ca0 DH |
348 | /* |
349 | * Return true if every character in the string is hexidecimal. | |
350 | */ | |
351 | static int | |
352 | is_hex_string(const char *s) { | |
353 | while (*s != '\0') { | |
354 | if (!isxdigit(*s)) { | |
355 | return 0; | |
356 | } | |
357 | s++; | |
358 | } | |
359 | return 1; | |
360 | } | |
361 | ||
362 | /* | |
363 | * ip-address6 :== (complicated set of rules) | |
364 | * | |
365 | * See section 2.2 of RFC 1884 for details. | |
366 | * | |
367 | * We are lazy for this. We pull numbers, names, colons, and dots | |
368 | * together and then throw the resulting string at the inet_pton() | |
369 | * function. | |
370 | */ | |
371 | ||
372 | int | |
373 | parse_ip6_addr(struct parse *cfile, struct iaddr *addr) { | |
374 | enum dhcp_token token; | |
375 | const char *val; | |
376 | int val_len; | |
377 | ||
378 | char v6[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")]; | |
379 | int v6_len; | |
380 | ||
bda33169 SK |
381 | /* |
382 | * First token is non-raw. This way we eat any whitespace before | |
383 | * our IPv6 address begins, like one would expect. | |
384 | */ | |
385 | token = peek_token(&val, NULL, cfile); | |
386 | ||
387 | /* | |
388 | * Gather symbols. | |
389 | */ | |
98bd7ca0 DH |
390 | v6_len = 0; |
391 | for (;;) { | |
98bd7ca0 DH |
392 | if ((((token == NAME) || (token == NUMBER_OR_NAME)) && |
393 | is_hex_string(val)) || | |
394 | (token == NUMBER) || | |
395 | (token == DOT) || | |
396 | (token == COLON)) { | |
397 | ||
bda33169 | 398 | next_raw_token(&val, NULL, cfile); |
98bd7ca0 DH |
399 | val_len = strlen(val); |
400 | if ((v6_len + val_len) >= sizeof(v6)) { | |
401 | parse_warn(cfile, "Invalid IPv6 address."); | |
402 | skip_to_semi(cfile); | |
403 | return 0; | |
404 | } | |
405 | memcpy(v6+v6_len, val, val_len); | |
406 | v6_len += val_len; | |
407 | ||
408 | } else { | |
409 | break; | |
410 | } | |
bda33169 | 411 | token = peek_raw_token(&val, NULL, cfile); |
98bd7ca0 DH |
412 | } |
413 | v6[v6_len] = '\0'; | |
414 | ||
bda33169 SK |
415 | /* |
416 | * Use inet_pton() for actual work. | |
417 | */ | |
98bd7ca0 DH |
418 | if (inet_pton(AF_INET6, v6, addr->iabuf) <= 0) { |
419 | parse_warn(cfile, "Invalid IPv6 address."); | |
420 | skip_to_semi(cfile); | |
421 | return 0; | |
422 | } | |
423 | addr->len = 16; | |
424 | return 1; | |
425 | } | |
426 | ||
427 | /* | |
428 | * Same as parse_ip6_addr() above, but returns the value in the | |
429 | * expression rather than in an address structure. | |
430 | */ | |
431 | int | |
432 | parse_ip6_addr_expr(struct expression **expr, | |
433 | struct parse *cfile) { | |
434 | struct iaddr addr; | |
435 | ||
436 | if (!parse_ip6_addr(cfile, &addr)) { | |
437 | return 0; | |
438 | } | |
439 | return make_const_data(expr, addr.iabuf, addr.len, 0, 1, MDL); | |
440 | } | |
441 | ||
febbd402 DH |
442 | /* |
443 | * ip-address-with-subnet :== ip-address | | |
444 | * ip-address "/" NUMBER | |
445 | */ | |
446 | ||
447 | int | |
448 | parse_ip_addr_with_subnet(cfile, match) | |
449 | struct parse *cfile; | |
450 | struct iaddrmatch *match; | |
451 | { | |
452 | const char *val, *orig; | |
453 | enum dhcp_token token; | |
454 | int prefixlen; | |
455 | int fflen; | |
456 | unsigned char newval, warnmask=0; | |
457 | ||
458 | if (parse_ip_addr(cfile, &match->addr)) { | |
459 | /* default to host mask */ | |
460 | prefixlen = match->addr.len * 8; | |
461 | ||
462 | token = peek_token(&val, NULL, cfile); | |
463 | ||
464 | if (token == SLASH) { | |
465 | next_token(&val, NULL, cfile); | |
466 | token = next_token(&val, NULL, cfile); | |
467 | ||
468 | if (token != NUMBER) { | |
469 | parse_warn(cfile, "Invalid CIDR prefix length:" | |
470 | " expecting a number."); | |
471 | return 0; | |
472 | } | |
473 | ||
474 | prefixlen = atoi(val); | |
475 | ||
476 | if (prefixlen < 0 || | |
477 | prefixlen > (match->addr.len * 8)) { | |
478 | parse_warn(cfile, "subnet prefix is out of " | |
479 | "range [0..%d].", | |
480 | match->addr.len * 8); | |
481 | return 0; | |
482 | } | |
483 | } | |
484 | ||
485 | /* construct a suitable mask field */ | |
486 | ||
487 | /* copy length */ | |
488 | match->mask.len = match->addr.len; | |
489 | ||
490 | /* count of 0xff bytes in mask */ | |
491 | fflen = prefixlen / 8; | |
492 | ||
493 | /* set leading mask */ | |
494 | memset(match->mask.iabuf, 0xff, fflen); | |
495 | ||
496 | /* set zeroes */ | |
497 | if (fflen < match->mask.len) { | |
498 | match->mask.iabuf[fflen] = | |
499 | "\x00\x80\xc0\xe0\xf0\xf8\xfc\xfe"[prefixlen % 8]; | |
500 | ||
501 | memset(match->mask.iabuf+fflen+1, 0x00, | |
502 | match->mask.len - fflen - 1); | |
503 | ||
504 | /* AND-out insignificant bits from supplied netmask. */ | |
505 | orig = piaddr(match->addr); | |
506 | do { | |
507 | newval = match->addr.iabuf[fflen] & | |
508 | match->mask.iabuf[fflen]; | |
509 | ||
510 | if (newval != match->addr.iabuf[fflen]) { | |
511 | warnmask = 1; | |
512 | match->addr.iabuf[fflen] = newval; | |
513 | } | |
514 | } while (++fflen < match->mask.len); | |
515 | ||
516 | if (warnmask) { | |
517 | log_error("Warning: Extraneous bits removed " | |
518 | "in address component of %s/%d.", | |
519 | orig, prefixlen); | |
520 | log_error("New value: %s/%d.", | |
521 | piaddr(match->addr), prefixlen); | |
522 | } | |
523 | } | |
524 | ||
525 | return 1; | |
526 | } | |
527 | ||
528 | parse_warn(cfile, | |
529 | "expecting ip-address or ip-address/prefixlen"); | |
530 | ||
531 | return 0; /* let caller pick up pieces */ | |
532 | } | |
533 | ||
be6be08d | 534 | /* |
c57db45c | 535 | * hardware-parameter :== HARDWARE hardware-type colon-separated-hex-list SEMI |
98311e4b | 536 | * hardware-type :== ETHERNET | TOKEN_RING | FDDI |
be6be08d | 537 | */ |
63115431 TL |
538 | |
539 | void parse_hardware_param (cfile, hardware) | |
4615d498 | 540 | struct parse *cfile; |
63115431 TL |
541 | struct hardware *hardware; |
542 | { | |
b1b7b521 | 543 | const char *val; |
02a015fb | 544 | enum dhcp_token token; |
e703795d | 545 | unsigned hlen; |
63115431 TL |
546 | unsigned char *t; |
547 | ||
b3519f23 | 548 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 TL |
549 | switch (token) { |
550 | case ETHERNET: | |
9fb2fb28 | 551 | hardware -> hbuf [0] = HTYPE_ETHER; |
63115431 TL |
552 | break; |
553 | case TOKEN_RING: | |
9fb2fb28 | 554 | hardware -> hbuf [0] = HTYPE_IEEE802; |
63115431 | 555 | break; |
cea8b5c9 | 556 | case FDDI: |
9fb2fb28 | 557 | hardware -> hbuf [0] = HTYPE_FDDI; |
cea8b5c9 | 558 | break; |
63115431 | 559 | default: |
7d452841 | 560 | if (!strncmp (val, "unknown-", 8)) { |
9007657d | 561 | hardware -> hbuf [0] = atoi (&val [8]); |
7d452841 TL |
562 | } else { |
563 | parse_warn (cfile, | |
564 | "expecting a network hardware type"); | |
565 | skip_to_semi (cfile); | |
566 | ||
567 | return; | |
568 | } | |
63115431 TL |
569 | } |
570 | ||
571 | /* Parse the hardware address information. Technically, | |
572 | it would make a lot of sense to restrict the length of the | |
573 | data we'll accept here to the length of a particular hardware | |
574 | address type. Unfortunately, there are some broken clients | |
575 | out there that put bogus data in the chaddr buffer, and we accept | |
576 | that data in the lease file rather than simply failing on such | |
577 | clients. Yuck. */ | |
578 | hlen = 0; | |
b3519f23 | 579 | token = peek_token (&val, (unsigned *)0, cfile); |
1898dcf7 TL |
580 | if (token == SEMI) { |
581 | hardware -> hlen = 1; | |
582 | goto out; | |
583 | } | |
63115431 TL |
584 | t = parse_numeric_aggregate (cfile, (unsigned char *)0, &hlen, |
585 | COLON, 16, 8); | |
1898dcf7 TL |
586 | if (!t) { |
587 | hardware -> hlen = 1; | |
63115431 | 588 | return; |
1898dcf7 | 589 | } |
9fb2fb28 | 590 | if (hlen + 1 > sizeof hardware -> hbuf) { |
fdac15d9 | 591 | dfree (t, MDL); |
4615d498 | 592 | parse_warn (cfile, "hardware address too long"); |
63115431 | 593 | } else { |
9fb2fb28 TL |
594 | hardware -> hlen = hlen + 1; |
595 | memcpy ((unsigned char *)&hardware -> hbuf [1], t, hlen); | |
596 | if (hlen + 1 < sizeof hardware -> hbuf) | |
597 | memset (&hardware -> hbuf [hlen + 1], 0, | |
598 | (sizeof hardware -> hbuf) - hlen - 1); | |
fdac15d9 | 599 | dfree (t, MDL); |
63115431 TL |
600 | } |
601 | ||
1898dcf7 | 602 | out: |
b3519f23 | 603 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 604 | if (token != SEMI) { |
4615d498 | 605 | parse_warn (cfile, "expecting semicolon."); |
63115431 TL |
606 | skip_to_semi (cfile); |
607 | } | |
608 | } | |
609 | ||
610 | /* lease-time :== NUMBER SEMI */ | |
611 | ||
612 | void parse_lease_time (cfile, timep) | |
4615d498 | 613 | struct parse *cfile; |
63115431 TL |
614 | TIME *timep; |
615 | { | |
b1b7b521 | 616 | const char *val; |
02a015fb | 617 | enum dhcp_token token; |
88cd8aca | 618 | u_int32_t num; |
63115431 | 619 | |
b3519f23 | 620 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 621 | if (token != NUMBER) { |
4615d498 | 622 | parse_warn (cfile, "Expecting numeric lease time"); |
63115431 TL |
623 | skip_to_semi (cfile); |
624 | return; | |
625 | } | |
88cd8aca | 626 | convert_num(cfile, (unsigned char *)&num, val, 10, 32); |
63115431 | 627 | /* Unswap the number - convert_num returns stuff in NBO. */ |
88cd8aca | 628 | *timep = ntohl(num); |
63115431 TL |
629 | |
630 | parse_semi (cfile); | |
631 | } | |
632 | ||
633 | /* No BNF for numeric aggregates - that's defined by the caller. What | |
c57db45c SK |
634 | this function does is to parse a sequence of numbers separated by |
635 | the token specified in separator. If max is zero, any number of | |
63115431 TL |
636 | numbers will be parsed; otherwise, exactly max numbers are |
637 | expected. Base and size tell us how to internalize the numbers | |
638 | once they've been tokenized. */ | |
639 | ||
640 | unsigned char *parse_numeric_aggregate (cfile, buf, | |
c57db45c | 641 | max, separator, base, size) |
4615d498 | 642 | struct parse *cfile; |
63115431 | 643 | unsigned char *buf; |
b1b7b521 | 644 | unsigned *max; |
c57db45c | 645 | int separator; |
63115431 | 646 | int base; |
b1b7b521 | 647 | unsigned size; |
63115431 | 648 | { |
b1b7b521 | 649 | const char *val; |
02a015fb | 650 | enum dhcp_token token; |
63115431 | 651 | unsigned char *bufp = buf, *s, *t; |
b1b7b521 | 652 | unsigned count = 0; |
63115431 TL |
653 | pair c = (pair)0; |
654 | ||
655 | if (!bufp && *max) { | |
fdac15d9 | 656 | bufp = (unsigned char *)dmalloc (*max * size / 8, MDL); |
63115431 | 657 | if (!bufp) |
1ff8f8ea TL |
658 | log_fatal ("no space for numeric aggregate"); |
659 | s = 0; | |
63115431 TL |
660 | } else |
661 | s = bufp; | |
662 | ||
663 | do { | |
664 | if (count) { | |
b3519f23 | 665 | token = peek_token (&val, (unsigned *)0, cfile); |
c57db45c | 666 | if (token != separator) { |
63115431 TL |
667 | if (!*max) |
668 | break; | |
669 | if (token != RBRACE && token != LBRACE) | |
b3519f23 TL |
670 | token = next_token (&val, |
671 | (unsigned *)0, | |
672 | cfile); | |
4615d498 | 673 | parse_warn (cfile, "too few numbers."); |
63115431 TL |
674 | if (token != SEMI) |
675 | skip_to_semi (cfile); | |
676 | return (unsigned char *)0; | |
677 | } | |
b3519f23 | 678 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 679 | } |
b3519f23 | 680 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 681 | |
0b69dcc8 | 682 | if (token == END_OF_FILE) { |
4615d498 | 683 | parse_warn (cfile, "unexpected end of file"); |
63115431 TL |
684 | break; |
685 | } | |
686 | ||
687 | /* Allow NUMBER_OR_NAME if base is 16. */ | |
688 | if (token != NUMBER && | |
689 | (base != 16 || token != NUMBER_OR_NAME)) { | |
4615d498 | 690 | parse_warn (cfile, "expecting numeric value."); |
63115431 TL |
691 | skip_to_semi (cfile); |
692 | return (unsigned char *)0; | |
693 | } | |
694 | /* If we can, convert the number now; otherwise, build | |
695 | a linked list of all the numbers. */ | |
696 | if (s) { | |
4615d498 | 697 | convert_num (cfile, s, val, base, size); |
63115431 TL |
698 | s += size / 8; |
699 | } else { | |
fdac15d9 | 700 | t = (unsigned char *)dmalloc (strlen (val) + 1, MDL); |
63115431 | 701 | if (!t) |
8ae2d595 | 702 | log_fatal ("no temp space for number."); |
338303a4 TL |
703 | strcpy ((char *)t, val); |
704 | c = cons ((caddr_t)t, c); | |
63115431 TL |
705 | } |
706 | } while (++count != *max); | |
707 | ||
708 | /* If we had to cons up a list, convert it now. */ | |
709 | if (c) { | |
fdac15d9 | 710 | bufp = (unsigned char *)dmalloc (count * size / 8, MDL); |
63115431 | 711 | if (!bufp) |
1ff8f8ea | 712 | log_fatal ("no space for numeric aggregate."); |
63115431 TL |
713 | s = bufp + count - size / 8; |
714 | *max = count; | |
715 | } | |
716 | while (c) { | |
717 | pair cdr = c -> cdr; | |
4615d498 | 718 | convert_num (cfile, s, (char *)(c -> car), base, size); |
63115431 TL |
719 | s -= size / 8; |
720 | /* Free up temp space. */ | |
fdac15d9 TL |
721 | dfree (c -> car, MDL); |
722 | dfree (c, MDL); | |
63115431 TL |
723 | c = cdr; |
724 | } | |
725 | return bufp; | |
726 | } | |
727 | ||
4615d498 TL |
728 | void convert_num (cfile, buf, str, base, size) |
729 | struct parse *cfile; | |
63115431 | 730 | unsigned char *buf; |
b1b7b521 | 731 | const char *str; |
63115431 | 732 | int base; |
b1b7b521 | 733 | unsigned size; |
63115431 | 734 | { |
804401cc | 735 | const unsigned char *ptr = str; |
63115431 TL |
736 | int negative = 0; |
737 | u_int32_t val = 0; | |
738 | int tval; | |
739 | int max; | |
740 | ||
741 | if (*ptr == '-') { | |
742 | negative = 1; | |
743 | ++ptr; | |
744 | } | |
745 | ||
746 | /* If base wasn't specified, figure it out from the data. */ | |
747 | if (!base) { | |
748 | if (ptr [0] == '0') { | |
749 | if (ptr [1] == 'x') { | |
750 | base = 16; | |
751 | ptr += 2; | |
752 | } else if (isascii (ptr [1]) && isdigit (ptr [1])) { | |
753 | base = 8; | |
754 | ptr += 1; | |
755 | } else { | |
756 | base = 10; | |
757 | } | |
758 | } else { | |
759 | base = 10; | |
760 | } | |
761 | } | |
762 | ||
763 | do { | |
764 | tval = *ptr++; | |
765 | /* XXX assumes ASCII... */ | |
766 | if (tval >= 'a') | |
767 | tval = tval - 'a' + 10; | |
768 | else if (tval >= 'A') | |
769 | tval = tval - 'A' + 10; | |
770 | else if (tval >= '0') | |
771 | tval -= '0'; | |
772 | else { | |
4615d498 | 773 | parse_warn (cfile, "Bogus number: %s.", str); |
63115431 TL |
774 | break; |
775 | } | |
776 | if (tval >= base) { | |
4615d498 TL |
777 | parse_warn (cfile, |
778 | "Bogus number %s: digit %d not in base %d", | |
f420e08c | 779 | str, tval, base); |
63115431 TL |
780 | break; |
781 | } | |
782 | val = val * base + tval; | |
783 | } while (*ptr); | |
784 | ||
785 | if (negative) | |
786 | max = (1 << (size - 1)); | |
787 | else | |
788 | max = (1 << (size - 1)) + ((1 << (size - 1)) - 1); | |
789 | if (val > max) { | |
790 | switch (base) { | |
791 | case 8: | |
4615d498 | 792 | parse_warn (cfile, |
06afba54 | 793 | "%s%lo exceeds max (%d) for precision.", |
b3d594dd TL |
794 | negative ? "-" : "", |
795 | (unsigned long)val, max); | |
63115431 TL |
796 | break; |
797 | case 16: | |
4615d498 | 798 | parse_warn (cfile, |
06afba54 | 799 | "%s%lx exceeds max (%d) for precision.", |
b3d594dd TL |
800 | negative ? "-" : "", |
801 | (unsigned long)val, max); | |
63115431 TL |
802 | break; |
803 | default: | |
4615d498 | 804 | parse_warn (cfile, |
06afba54 | 805 | "%s%lu exceeds max (%d) for precision.", |
b3d594dd TL |
806 | negative ? "-" : "", |
807 | (unsigned long)val, max); | |
63115431 TL |
808 | break; |
809 | } | |
810 | } | |
811 | ||
812 | if (negative) { | |
813 | switch (size) { | |
814 | case 8: | |
815 | *buf = -(unsigned long)val; | |
816 | break; | |
817 | case 16: | |
b1b7b521 | 818 | putShort (buf, -(long)val); |
63115431 TL |
819 | break; |
820 | case 32: | |
b1b7b521 | 821 | putLong (buf, -(long)val); |
63115431 TL |
822 | break; |
823 | default: | |
4615d498 TL |
824 | parse_warn (cfile, |
825 | "Unexpected integer size: %d\n", size); | |
63115431 TL |
826 | break; |
827 | } | |
828 | } else { | |
829 | switch (size) { | |
830 | case 8: | |
831 | *buf = (u_int8_t)val; | |
832 | break; | |
833 | case 16: | |
834 | putUShort (buf, (u_int16_t)val); | |
835 | break; | |
836 | case 32: | |
837 | putULong (buf, val); | |
838 | break; | |
839 | default: | |
4615d498 TL |
840 | parse_warn (cfile, |
841 | "Unexpected integer size: %d\n", size); | |
63115431 TL |
842 | break; |
843 | } | |
844 | } | |
845 | } | |
846 | ||
be6be08d TL |
847 | /* |
848 | * date :== NUMBER NUMBER SLASH NUMBER SLASH NUMBER | |
a82abfc7 TL |
849 | * NUMBER COLON NUMBER COLON NUMBER SEMI | |
850 | * NUMBER NUMBER SLASH NUMBER SLASH NUMBER | |
851 | * NUMBER COLON NUMBER COLON NUMBER NUMBER SEMI | | |
be1ee858 | 852 | * NEVER |
be6be08d | 853 | * |
a82abfc7 TL |
854 | * Dates are stored in GMT or with a timezone offset; first number is day |
855 | * of week; next is year/month/day; next is hours:minutes:seconds on a | |
856 | * 24-hour clock, followed by the timezone offset in seconds, which is | |
857 | * optional. | |
be6be08d | 858 | */ |
63115431 TL |
859 | |
860 | TIME parse_date (cfile) | |
4615d498 | 861 | struct parse *cfile; |
63115431 TL |
862 | { |
863 | struct tm tm; | |
864 | int guess; | |
a82abfc7 | 865 | int tzoff, wday, year, mon, mday, hour, min, sec; |
b1b7b521 | 866 | const char *val; |
02a015fb | 867 | enum dhcp_token token; |
63115431 TL |
868 | static int months [11] = { 31, 59, 90, 120, 151, 181, |
869 | 212, 243, 273, 304, 334 }; | |
870 | ||
be1ee858 | 871 | /* Day of week, or "never"... */ |
b3519f23 | 872 | token = next_token (&val, (unsigned *)0, cfile); |
be1ee858 TL |
873 | if (token == NEVER) { |
874 | if (!parse_semi (cfile)) | |
875 | return 0; | |
876 | return MAX_TIME; | |
877 | } | |
878 | ||
5e864416 DH |
879 | /* This indicates 'local' time format. */ |
880 | if (token == EPOCH) { | |
881 | token = next_token(&val, NULL, cfile); | |
882 | ||
883 | if (token != NUMBER) { | |
884 | parse_warn(cfile, "Seconds since epoch expected."); | |
885 | if (token != SEMI) | |
886 | skip_to_semi(cfile); | |
887 | return (TIME)0; | |
888 | } | |
889 | ||
890 | guess = atoi(val); | |
891 | ||
892 | if (!parse_semi(cfile)) | |
893 | return (TIME)0; | |
894 | ||
895 | return guess; | |
896 | } | |
897 | ||
63115431 | 898 | if (token != NUMBER) { |
4615d498 | 899 | parse_warn (cfile, "numeric day of week expected."); |
63115431 TL |
900 | if (token != SEMI) |
901 | skip_to_semi (cfile); | |
902 | return (TIME)0; | |
903 | } | |
a82abfc7 | 904 | wday = atoi (val); |
63115431 TL |
905 | |
906 | /* Year... */ | |
b3519f23 | 907 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 908 | if (token != NUMBER) { |
4615d498 | 909 | parse_warn (cfile, "numeric year expected."); |
63115431 TL |
910 | if (token != SEMI) |
911 | skip_to_semi (cfile); | |
912 | return (TIME)0; | |
913 | } | |
edca2b1a TL |
914 | |
915 | /* Note: the following is not a Y2K bug - it's a Y1.9K bug. Until | |
916 | somebody invents a time machine, I think we can safely disregard | |
917 | it. This actually works around a stupid Y2K bug that was present | |
918 | in a very early beta release of dhcpd. */ | |
a82abfc7 TL |
919 | year = atoi (val); |
920 | if (year > 1900) | |
921 | year -= 1900; | |
63115431 | 922 | |
c57db45c | 923 | /* Slash separating year from month... */ |
b3519f23 | 924 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 925 | if (token != SLASH) { |
4615d498 | 926 | parse_warn (cfile, |
c57db45c | 927 | "expected slash separating year from month."); |
63115431 TL |
928 | if (token != SEMI) |
929 | skip_to_semi (cfile); | |
930 | return (TIME)0; | |
931 | } | |
932 | ||
933 | /* Month... */ | |
b3519f23 | 934 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 935 | if (token != NUMBER) { |
4615d498 | 936 | parse_warn (cfile, "numeric month expected."); |
63115431 TL |
937 | if (token != SEMI) |
938 | skip_to_semi (cfile); | |
939 | return (TIME)0; | |
940 | } | |
a82abfc7 | 941 | mon = atoi (val) - 1; |
63115431 | 942 | |
c57db45c | 943 | /* Slash separating month from day... */ |
b3519f23 | 944 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 945 | if (token != SLASH) { |
4615d498 | 946 | parse_warn (cfile, |
c57db45c | 947 | "expected slash separating month from day."); |
63115431 TL |
948 | if (token != SEMI) |
949 | skip_to_semi (cfile); | |
950 | return (TIME)0; | |
951 | } | |
952 | ||
98311e4b | 953 | /* Day of month... */ |
b3519f23 | 954 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 955 | if (token != NUMBER) { |
4615d498 | 956 | parse_warn (cfile, "numeric day of month expected."); |
63115431 TL |
957 | if (token != SEMI) |
958 | skip_to_semi (cfile); | |
959 | return (TIME)0; | |
960 | } | |
a82abfc7 | 961 | mday = atoi (val); |
63115431 TL |
962 | |
963 | /* Hour... */ | |
b3519f23 | 964 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 965 | if (token != NUMBER) { |
4615d498 | 966 | parse_warn (cfile, "numeric hour expected."); |
63115431 TL |
967 | if (token != SEMI) |
968 | skip_to_semi (cfile); | |
969 | return (TIME)0; | |
970 | } | |
a82abfc7 | 971 | hour = atoi (val); |
63115431 | 972 | |
c57db45c | 973 | /* Colon separating hour from minute... */ |
b3519f23 | 974 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 975 | if (token != COLON) { |
4615d498 | 976 | parse_warn (cfile, |
c57db45c | 977 | "expected colon separating hour from minute."); |
63115431 TL |
978 | if (token != SEMI) |
979 | skip_to_semi (cfile); | |
980 | return (TIME)0; | |
981 | } | |
982 | ||
983 | /* Minute... */ | |
b3519f23 | 984 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 985 | if (token != NUMBER) { |
4615d498 | 986 | parse_warn (cfile, "numeric minute expected."); |
63115431 TL |
987 | if (token != SEMI) |
988 | skip_to_semi (cfile); | |
989 | return (TIME)0; | |
990 | } | |
a82abfc7 | 991 | min = atoi (val); |
63115431 | 992 | |
c57db45c | 993 | /* Colon separating minute from second... */ |
b3519f23 | 994 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 995 | if (token != COLON) { |
4615d498 | 996 | parse_warn (cfile, |
67674ffb | 997 | "expected colon separating minute from second."); |
63115431 TL |
998 | if (token != SEMI) |
999 | skip_to_semi (cfile); | |
1000 | return (TIME)0; | |
1001 | } | |
1002 | ||
67674ffb | 1003 | /* Second... */ |
b3519f23 | 1004 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 1005 | if (token != NUMBER) { |
67674ffb | 1006 | parse_warn (cfile, "numeric second expected."); |
63115431 TL |
1007 | if (token != SEMI) |
1008 | skip_to_semi (cfile); | |
1009 | return (TIME)0; | |
1010 | } | |
a82abfc7 | 1011 | sec = atoi (val); |
63115431 | 1012 | |
b3519f23 | 1013 | token = peek_token (&val, (unsigned *)0, cfile); |
a82abfc7 | 1014 | if (token == NUMBER) { |
b3519f23 | 1015 | token = next_token (&val, (unsigned *)0, cfile); |
a82abfc7 TL |
1016 | tzoff = atoi (val); |
1017 | } else | |
1018 | tzoff = 0; | |
63115431 TL |
1019 | |
1020 | /* Make sure the date ends in a semicolon... */ | |
25541f2f | 1021 | if (!parse_semi (cfile)) |
63115431 | 1022 | return 0; |
63115431 TL |
1023 | |
1024 | /* Guess the time value... */ | |
a82abfc7 TL |
1025 | guess = ((((((365 * (year - 70) + /* Days in years since '70 */ |
1026 | (year - 69) / 4 + /* Leap days since '70 */ | |
1027 | (mon /* Days in months this year */ | |
1028 | ? months [mon - 1] | |
63115431 | 1029 | : 0) + |
a82abfc7 TL |
1030 | (mon > 1 && /* Leap day this year */ |
1031 | !((year - 72) & 3)) + | |
1032 | mday - 1) * 24) + /* Day of month */ | |
1033 | hour) * 60) + | |
1034 | min) * 60) + sec + tzoff; | |
63115431 TL |
1035 | |
1036 | /* This guess could be wrong because of leap seconds or other | |
1037 | weirdness we don't know about that the system does. For | |
1038 | now, we're just going to accept the guess, but at some point | |
1039 | it might be nice to do a successive approximation here to | |
1040 | get an exact value. Even if the error is small, if the | |
1041 | server is restarted frequently (and thus the lease database | |
1042 | is reread), the error could accumulate into something | |
1043 | significant. */ | |
1044 | ||
1045 | return guess; | |
1046 | } | |
4761e04b | 1047 | |
be6be08d TL |
1048 | /* |
1049 | * option-name :== IDENTIFIER | | |
1050 | IDENTIFIER . IDENTIFIER | |
1051 | */ | |
1052 | ||
f7fdb216 DH |
1053 | isc_result_t |
1054 | parse_option_name (cfile, allocate, known, opt) | |
4615d498 | 1055 | struct parse *cfile; |
6b4b0ec7 | 1056 | int allocate; |
b1b7b521 | 1057 | int *known; |
f7fdb216 | 1058 | struct option **opt; |
4761e04b | 1059 | { |
b1b7b521 | 1060 | const char *val; |
02a015fb | 1061 | enum dhcp_token token; |
6b4b0ec7 | 1062 | char *uname; |
4761e04b TL |
1063 | struct universe *universe; |
1064 | struct option *option; | |
d5341d9b | 1065 | unsigned code; |
4761e04b | 1066 | |
f7fdb216 DH |
1067 | if (opt == NULL) |
1068 | return ISC_R_INVALIDARG; | |
1069 | ||
b3519f23 | 1070 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b | 1071 | if (!is_identifier (token)) { |
4615d498 TL |
1072 | parse_warn (cfile, |
1073 | "expecting identifier after option keyword."); | |
4761e04b TL |
1074 | if (token != SEMI) |
1075 | skip_to_semi (cfile); | |
f7fdb216 | 1076 | return ISC_R_BADPARSE; |
4761e04b | 1077 | } |
fdac15d9 | 1078 | uname = dmalloc (strlen (val) + 1, MDL); |
6b4b0ec7 TL |
1079 | if (!uname) |
1080 | log_fatal ("no memory for uname information."); | |
1081 | strcpy (uname, val); | |
b3519f23 | 1082 | token = peek_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
1083 | if (token == DOT) { |
1084 | /* Go ahead and take the DOT token... */ | |
b3519f23 | 1085 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
1086 | |
1087 | /* The next token should be an identifier... */ | |
b3519f23 | 1088 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b | 1089 | if (!is_identifier (token)) { |
4615d498 | 1090 | parse_warn (cfile, "expecting identifier after '.'"); |
4761e04b TL |
1091 | if (token != SEMI) |
1092 | skip_to_semi (cfile); | |
f7fdb216 | 1093 | return ISC_R_BADPARSE; |
4761e04b TL |
1094 | } |
1095 | ||
1096 | /* Look up the option name hash table for the specified | |
6b4b0ec7 | 1097 | uname. */ |
20916cae TL |
1098 | universe = (struct universe *)0; |
1099 | if (!universe_hash_lookup (&universe, universe_hash, | |
1100 | uname, 0, MDL)) { | |
4615d498 | 1101 | parse_warn (cfile, "no option space named %s.", uname); |
4761e04b | 1102 | skip_to_semi (cfile); |
f7fdb216 | 1103 | return ISC_R_NOTFOUND; |
4761e04b TL |
1104 | } |
1105 | } else { | |
1106 | /* Use the default hash table, which contains all the | |
1107 | standard dhcp option names. */ | |
6b4b0ec7 | 1108 | val = uname; |
4761e04b TL |
1109 | universe = &dhcp_universe; |
1110 | } | |
1111 | ||
1112 | /* Look up the actual option info... */ | |
f7fdb216 DH |
1113 | option_name_hash_lookup(opt, universe->name_hash, val, 0, MDL); |
1114 | option = *opt; | |
4761e04b TL |
1115 | |
1116 | /* If we didn't get an option structure, it's an undefined option. */ | |
b1b7b521 | 1117 | if (option) { |
9a7f6fcd TL |
1118 | if (known) |
1119 | *known = 1; | |
d5341d9b SK |
1120 | /* If the option name is of the form unknown-[decimal], use |
1121 | * the trailing decimal value to find the option definition. | |
1122 | * If there is no definition, construct one. This is to | |
1123 | * support legacy use of unknown options in config files or | |
1124 | * lease databases. | |
1125 | */ | |
1126 | } else if (strncasecmp(val, "unknown-", 8) == 0) { | |
1127 | code = atoi(val+8); | |
f7fdb216 | 1128 | |
d5341d9b SK |
1129 | /* Option code 0 is always illegal for us, thanks |
1130 | * to the option decoder. | |
1131 | */ | |
1132 | if (code == 0 || code == universe->end) { | |
1133 | parse_warn(cfile, "Option codes 0 and %u are illegal " | |
1134 | "in the %s space.", universe->end, | |
1135 | universe->name); | |
1136 | skip_to_semi(cfile); | |
f7fdb216 | 1137 | dfree(uname, MDL); |
d5341d9b | 1138 | return ISC_R_FAILURE; |
6b4b0ec7 | 1139 | } |
d5341d9b SK |
1140 | |
1141 | /* It's odd to think of unknown option codes as | |
1142 | * being known, but this means we know what the | |
1143 | * parsed name is talking about. | |
1144 | */ | |
1145 | if (known) | |
1146 | *known = 1; | |
1147 | ||
1148 | option_code_hash_lookup(opt, universe->code_hash, | |
1149 | &code, 0, MDL); | |
1150 | option = *opt; | |
1151 | ||
1152 | /* If we did not find an option of that code, | |
1153 | * manufacture an unknown-xxx option definition. | |
1154 | * Its single reference will ensure that it is | |
1155 | * deleted once the option is recycled out of | |
1156 | * existence (by the parent). | |
1157 | */ | |
1158 | if (option == NULL) { | |
1159 | option = new_option(val, MDL); | |
1160 | option->universe = universe; | |
1161 | option->code = code; | |
1162 | option->format = "X"; | |
1163 | option_reference(opt, option, MDL); | |
1164 | } else | |
1165 | log_info("option %s has been redefined as option %s. " | |
1166 | "Please update your configs if neccessary.", | |
1167 | val, option->name); | |
1168 | /* If we've been told to allocate, that means that this | |
1169 | * (might) be an option code definition, so we'll create | |
1170 | * an option structure and return it for the parent to | |
1171 | * decide. | |
1172 | */ | |
1173 | } else if (allocate) { | |
1174 | option = new_option(val, MDL); | |
1175 | option -> universe = universe; | |
1176 | option_reference(opt, option, MDL); | |
1177 | } else { | |
1178 | parse_warn(cfile, "no option named %s in space %s", | |
1179 | val, universe->name); | |
4761e04b | 1180 | skip_to_semi (cfile); |
f7fdb216 DH |
1181 | dfree(uname, MDL); |
1182 | return ISC_R_NOTFOUND; | |
4761e04b TL |
1183 | } |
1184 | ||
1185 | /* Free the initial identifier token. */ | |
fdac15d9 | 1186 | dfree (uname, MDL); |
f7fdb216 | 1187 | return ISC_R_SUCCESS; |
4761e04b TL |
1188 | } |
1189 | ||
f7fdb216 DH |
1190 | /* IDENTIFIER [WIDTHS] SEMI |
1191 | * WIDTHS ~= LENGTH WIDTH NUMBER | |
1192 | * CODE WIDTH NUMBER | |
1193 | */ | |
52c9d530 TL |
1194 | |
1195 | void parse_option_space_decl (cfile) | |
4615d498 | 1196 | struct parse *cfile; |
52c9d530 TL |
1197 | { |
1198 | int token; | |
b1b7b521 | 1199 | const char *val; |
52c9d530 | 1200 | struct universe **ua, *nu; |
f7fdb216 DH |
1201 | char *nu_name; |
1202 | int tsize=1, lsize=1, hsize = 0; | |
52c9d530 | 1203 | |
b3519f23 TL |
1204 | next_token (&val, (unsigned *)0, cfile); /* Discard the SPACE token, |
1205 | which was checked by the | |
1206 | caller. */ | |
1207 | token = next_token (&val, (unsigned *)0, cfile); | |
52c9d530 | 1208 | if (!is_identifier (token)) { |
4615d498 | 1209 | parse_warn (cfile, "expecting identifier."); |
52c9d530 TL |
1210 | skip_to_semi (cfile); |
1211 | return; | |
1212 | } | |
4bd8800e | 1213 | nu = new_universe (MDL); |
52c9d530 TL |
1214 | if (!nu) |
1215 | log_fatal ("No memory for new option space."); | |
1216 | ||
1217 | /* Set up the server option universe... */ | |
f7fdb216 DH |
1218 | nu_name = dmalloc (strlen (val) + 1, MDL); |
1219 | if (!nu_name) | |
52c9d530 | 1220 | log_fatal ("No memory for new option space name."); |
f7fdb216 DH |
1221 | strcpy (nu_name, val); |
1222 | nu -> name = nu_name; | |
1223 | ||
1224 | do { | |
1225 | token = next_token(&val, NULL, cfile); | |
1226 | switch(token) { | |
1227 | case SEMI: | |
1228 | break; | |
1229 | ||
1230 | case CODE: | |
1231 | token = next_token(&val, NULL, cfile); | |
1232 | if (token != WIDTH) { | |
1233 | parse_warn(cfile, "expecting width token."); | |
1234 | goto bad; | |
1235 | } | |
1236 | ||
1237 | token = next_token(&val, NULL, cfile); | |
1238 | if (token != NUMBER) { | |
1239 | parse_warn(cfile, "expecting number 1, 2, 4."); | |
1240 | goto bad; | |
1241 | } | |
1242 | ||
1243 | tsize = atoi(val); | |
1244 | ||
1245 | ||
1246 | switch (tsize) { | |
1247 | case 1: | |
1248 | if (!hsize) | |
1249 | hsize = BYTE_NAME_HASH_SIZE; | |
1250 | break; | |
1251 | case 2: | |
1252 | if (!hsize) | |
1253 | hsize = WORD_NAME_HASH_SIZE; | |
1254 | break; | |
1255 | case 4: | |
1256 | if (!hsize) | |
1257 | hsize = QUAD_NAME_HASH_SIZE; | |
1258 | break; | |
1259 | default: | |
1260 | parse_warn(cfile, "invalid code width (%d), " | |
1261 | "expecting a 1, 2 or 4.", | |
d19e2cf7 | 1262 | tsize); |
f7fdb216 DH |
1263 | goto bad; |
1264 | } | |
1265 | break; | |
1266 | ||
1267 | case LENGTH: | |
1268 | token = next_token(&val, NULL, cfile); | |
1269 | if (token != WIDTH) { | |
1270 | parse_warn(cfile, "expecting width token."); | |
1271 | goto bad; | |
1272 | } | |
1273 | ||
1274 | token = next_token(&val, NULL, cfile); | |
1275 | if (token != NUMBER) { | |
1276 | parse_warn(cfile, "expecting number 1 or 2."); | |
1277 | goto bad; | |
1278 | } | |
1279 | ||
1280 | lsize = atoi(val); | |
1281 | if (lsize != 1 && lsize != 2) { | |
1282 | parse_warn(cfile, "invalid length width (%d) " | |
d19e2cf7 | 1283 | "expecting 1 or 2.", lsize); |
f7fdb216 DH |
1284 | goto bad; |
1285 | } | |
1286 | ||
1287 | break; | |
1288 | ||
1289 | case HASH: | |
1290 | token = next_token(&val, NULL, cfile); | |
1291 | if (token != SIZE) { | |
1292 | parse_warn(cfile, "expecting size token."); | |
1293 | goto bad; | |
1294 | } | |
1295 | ||
1296 | token = next_token(&val, NULL, cfile); | |
1297 | if (token != NUMBER) { | |
1298 | parse_warn(cfile, "expecting a 10base number"); | |
1299 | goto bad; | |
1300 | } | |
1301 | ||
1302 | /* (2^31)-1 is the highest Mersenne prime we should | |
1303 | * probably allow... | |
1304 | */ | |
1305 | hsize = atoi(val); | |
1306 | if (hsize < 0 || hsize > 0x7FFFFFFF) { | |
1307 | parse_warn(cfile, "invalid hash length: %d", | |
1308 | hsize); | |
1309 | goto bad; | |
1310 | } | |
1311 | ||
1312 | break; | |
1313 | ||
1314 | default: | |
1315 | parse_warn(cfile, "Unexpected token."); | |
1316 | } | |
1317 | } while (token != SEMI); | |
1318 | ||
1319 | if (!hsize) | |
1320 | hsize = DEFAULT_SPACE_HASH_SIZE; | |
1321 | ||
52c9d530 | 1322 | nu -> lookup_func = lookup_hashed_option; |
f7fdb216 | 1323 | nu -> option_state_dereference = hashed_option_state_dereference; |
f769d5ac | 1324 | nu -> foreach = hashed_option_space_foreach; |
52c9d530 TL |
1325 | nu -> save_func = save_hashed_option; |
1326 | nu -> delete_func = delete_hashed_option; | |
1327 | nu -> encapsulate = hashed_option_space_encapsulate; | |
962dc4ab | 1328 | nu -> decode = parse_option_buffer; |
f7fdb216 DH |
1329 | nu -> length_size = lsize; |
1330 | nu -> tag_size = tsize; | |
1331 | switch(tsize) { | |
1332 | case 1: | |
1333 | nu->get_tag = getUChar; | |
1334 | nu->store_tag = putUChar; | |
1335 | break; | |
1336 | case 2: | |
1337 | nu->get_tag = getUShort; | |
1338 | nu->store_tag = putUShort; | |
1339 | break; | |
1340 | case 4: | |
1341 | nu->get_tag = getULong; | |
1342 | nu->store_tag = putULong; | |
1343 | break; | |
1344 | default: | |
1345 | log_fatal("Impossible condition at %s:%d.", MDL); | |
1346 | } | |
1347 | switch(lsize) { | |
98bd7ca0 DH |
1348 | case 0: |
1349 | nu->get_length = NULL; | |
1350 | nu->store_length = NULL; | |
1351 | break; | |
f7fdb216 DH |
1352 | case 1: |
1353 | nu->get_length = getUChar; | |
1354 | nu->store_length = putUChar; | |
1355 | break; | |
1356 | case 2: | |
1357 | nu->get_length = getUShort; | |
1358 | nu->store_length = putUShort; | |
1359 | break; | |
1360 | default: | |
1361 | log_fatal("Impossible condition at %s:%d.", MDL); | |
1362 | } | |
52c9d530 TL |
1363 | nu -> index = universe_count++; |
1364 | if (nu -> index >= universe_max) { | |
fdac15d9 | 1365 | ua = dmalloc (universe_max * 2 * sizeof *ua, MDL); |
52c9d530 TL |
1366 | if (!ua) |
1367 | log_fatal ("No memory to expand option space array."); | |
1368 | memcpy (ua, universes, universe_max * sizeof *ua); | |
1369 | universe_max *= 2; | |
fdac15d9 | 1370 | dfree (universes, MDL); |
52c9d530 TL |
1371 | universes = ua; |
1372 | } | |
1373 | universes [nu -> index] = nu; | |
f7fdb216 DH |
1374 | if (!option_name_new_hash(&nu->name_hash, hsize, MDL) || |
1375 | !option_code_new_hash(&nu->code_hash, hsize, MDL)) | |
1376 | log_fatal("Can't allocate %s option hash table.", nu->name); | |
20916cae | 1377 | universe_hash_add (universe_hash, nu -> name, 0, nu, MDL); |
f7fdb216 DH |
1378 | return; |
1379 | ||
1380 | bad: | |
1381 | dfree(nu_name, MDL); | |
1382 | dfree(nu, MDL); | |
52c9d530 TL |
1383 | } |
1384 | ||
6b4b0ec7 TL |
1385 | /* This is faked up to look good right now. Ideally, this should do a |
1386 | recursive parse and allow arbitrary data structure definitions, but for | |
1387 | now it just allows you to specify a single type, an array of single types, | |
1388 | a sequence of types, or an array of sequences of types. | |
1389 | ||
1390 | ocd :== NUMBER EQUALS ocsd SEMI | |
1391 | ||
1392 | ocsd :== ocsd_type | | |
1393 | ocsd_type_sequence | | |
d8fc5060 | 1394 | ARRAY OF ocsd_simple_type_sequence |
6b4b0ec7 TL |
1395 | |
1396 | ocsd_type_sequence :== LBRACE ocsd_types RBRACE | |
1397 | ||
d8fc5060 TL |
1398 | ocsd_simple_type_sequence :== LBRACE ocsd_simple_types RBRACE |
1399 | ||
1400 | ocsd_types :== ocsd_type | | |
1401 | ocsd_types ocsd_type | |
1402 | ||
1403 | ocsd_type :== ocsd_simple_type | | |
1404 | ARRAY OF ocsd_simple_type | |
1405 | ||
1406 | ocsd_simple_types :== ocsd_simple_type | | |
1407 | ocsd_simple_types ocsd_simple_type | |
1408 | ||
1409 | ocsd_simple_type :== BOOLEAN | | |
1410 | INTEGER NUMBER | | |
1411 | SIGNED INTEGER NUMBER | | |
1412 | UNSIGNED INTEGER NUMBER | | |
1413 | IP-ADDRESS | | |
1414 | TEXT | | |
962dc4ab TL |
1415 | STRING | |
1416 | ENCAPSULATE identifier */ | |
6b4b0ec7 TL |
1417 | |
1418 | int parse_option_code_definition (cfile, option) | |
4615d498 | 1419 | struct parse *cfile; |
6b4b0ec7 TL |
1420 | struct option *option; |
1421 | { | |
b1b7b521 | 1422 | const char *val; |
6b4b0ec7 | 1423 | enum dhcp_token token; |
f7fdb216 | 1424 | struct option *oldopt; |
b1b7b521 | 1425 | unsigned arrayp = 0; |
6b4b0ec7 TL |
1426 | int recordp = 0; |
1427 | int no_more_in_record = 0; | |
1428 | char tokbuf [128]; | |
b1b7b521 | 1429 | unsigned tokix = 0; |
6b4b0ec7 TL |
1430 | char type; |
1431 | int code; | |
1432 | int is_signed; | |
b1b7b521 | 1433 | char *s; |
962dc4ab | 1434 | int has_encapsulation = 0; |
98bd7ca0 | 1435 | struct universe *encapsulated; |
6b4b0ec7 TL |
1436 | |
1437 | /* Parse the option code. */ | |
b3519f23 | 1438 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1439 | if (token != NUMBER) { |
4615d498 | 1440 | parse_warn (cfile, "expecting option code number."); |
6b4b0ec7 TL |
1441 | skip_to_semi (cfile); |
1442 | return 0; | |
1443 | } | |
1444 | option -> code = atoi (val); | |
1445 | ||
b3519f23 | 1446 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1447 | if (token != EQUAL) { |
4615d498 | 1448 | parse_warn (cfile, "expecting \"=\""); |
6b4b0ec7 TL |
1449 | skip_to_semi (cfile); |
1450 | return 0; | |
1451 | } | |
1452 | ||
1453 | /* See if this is an array. */ | |
b3519f23 | 1454 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1455 | if (token == ARRAY) { |
b3519f23 | 1456 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1457 | if (token != OF) { |
4615d498 | 1458 | parse_warn (cfile, "expecting \"of\"."); |
6b4b0ec7 TL |
1459 | skip_to_semi (cfile); |
1460 | return 0; | |
1461 | } | |
1462 | arrayp = 1; | |
b3519f23 | 1463 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 TL |
1464 | } |
1465 | ||
1466 | if (token == LBRACE) { | |
1467 | recordp = 1; | |
b3519f23 | 1468 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 TL |
1469 | } |
1470 | ||
1471 | /* At this point we're expecting a data type. */ | |
1472 | next_type: | |
962dc4ab TL |
1473 | if (has_encapsulation) { |
1474 | parse_warn (cfile, | |
1475 | "encapsulate must always be the last item."); | |
1476 | skip_to_semi (cfile); | |
1477 | return 0; | |
1478 | } | |
1479 | ||
6b4b0ec7 | 1480 | switch (token) { |
d8fc5060 TL |
1481 | case ARRAY: |
1482 | if (arrayp) { | |
1483 | parse_warn (cfile, "no nested arrays."); | |
1484 | skip_to_rbrace (cfile, recordp); | |
1485 | if (recordp) | |
1486 | skip_to_semi (cfile); | |
1487 | return 0; | |
1488 | } | |
b3519f23 | 1489 | token = next_token (&val, (unsigned *)0, cfile); |
d8fc5060 TL |
1490 | if (token != OF) { |
1491 | parse_warn (cfile, "expecting \"of\"."); | |
1492 | skip_to_semi (cfile); | |
1493 | return 0; | |
1494 | } | |
1495 | arrayp = recordp + 1; | |
b3519f23 | 1496 | token = next_token (&val, (unsigned *)0, cfile); |
d8fc5060 TL |
1497 | if ((recordp) && (token == LBRACE)) { |
1498 | parse_warn (cfile, | |
1499 | "only uniform array inside record."); | |
1500 | skip_to_rbrace (cfile, recordp + 1); | |
1501 | skip_to_semi (cfile); | |
1502 | return 0; | |
1503 | } | |
1504 | goto next_type; | |
6b4b0ec7 TL |
1505 | case BOOLEAN: |
1506 | type = 'f'; | |
1507 | break; | |
1508 | case INTEGER: | |
1509 | is_signed = 1; | |
1510 | parse_integer: | |
b3519f23 | 1511 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1512 | if (token != NUMBER) { |
4615d498 | 1513 | parse_warn (cfile, "expecting number."); |
6b4b0ec7 TL |
1514 | skip_to_rbrace (cfile, recordp); |
1515 | if (recordp) | |
1516 | skip_to_semi (cfile); | |
1517 | return 0; | |
1518 | } | |
1519 | switch (atoi (val)) { | |
1520 | case 8: | |
1521 | type = is_signed ? 'b' : 'B'; | |
1522 | break; | |
1523 | case 16: | |
1524 | type = is_signed ? 's' : 'S'; | |
1525 | break; | |
1526 | case 32: | |
1527 | type = is_signed ? 'l' : 'L'; | |
1528 | break; | |
1529 | default: | |
4615d498 TL |
1530 | parse_warn (cfile, |
1531 | "%s bit precision is not supported.", val); | |
6b4b0ec7 TL |
1532 | skip_to_rbrace (cfile, recordp); |
1533 | if (recordp) | |
1534 | skip_to_semi (cfile); | |
1535 | return 0; | |
1536 | } | |
1537 | break; | |
1538 | case SIGNED: | |
1539 | is_signed = 1; | |
1540 | parse_signed: | |
b3519f23 | 1541 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1542 | if (token != INTEGER) { |
4615d498 | 1543 | parse_warn (cfile, "expecting \"integer\" keyword."); |
6b4b0ec7 TL |
1544 | skip_to_rbrace (cfile, recordp); |
1545 | if (recordp) | |
1546 | skip_to_semi (cfile); | |
1547 | return 0; | |
1548 | } | |
1549 | goto parse_integer; | |
1550 | case UNSIGNED: | |
1551 | is_signed = 0; | |
1552 | goto parse_signed; | |
1553 | ||
1554 | case IP_ADDRESS: | |
1555 | type = 'I'; | |
1556 | break; | |
98bd7ca0 DH |
1557 | case IP6_ADDRESS: |
1558 | type = '6'; | |
1559 | break; | |
d758ad8c TL |
1560 | case DOMAIN_NAME: |
1561 | type = 'd'; | |
1562 | goto no_arrays; | |
dba5803b | 1563 | case DOMAIN_LIST: |
98bd7ca0 DH |
1564 | /* Consume optional compression indicator. */ |
1565 | token = peek_token(&val, NULL, cfile); | |
1566 | if (token == COMPRESSED) { | |
1567 | token = next_token(&val, NULL, cfile); | |
1568 | tokbuf[tokix++] = 'D'; | |
1569 | type = 'c'; | |
1570 | } else | |
1571 | type = 'D'; | |
dba5803b | 1572 | goto no_arrays; |
6b4b0ec7 TL |
1573 | case TEXT: |
1574 | type = 't'; | |
1575 | no_arrays: | |
1576 | if (arrayp) { | |
4615d498 | 1577 | parse_warn (cfile, "arrays of text strings not %s", |
6b4b0ec7 TL |
1578 | "yet supported."); |
1579 | skip_to_rbrace (cfile, recordp); | |
1580 | if (recordp) | |
1581 | skip_to_semi (cfile); | |
1582 | return 0; | |
1583 | } | |
1584 | no_more_in_record = 1; | |
1585 | break; | |
ef91cb39 | 1586 | case STRING_TOKEN: |
6b4b0ec7 TL |
1587 | type = 'X'; |
1588 | goto no_arrays; | |
1589 | ||
962dc4ab | 1590 | case ENCAPSULATE: |
b3519f23 | 1591 | token = next_token (&val, (unsigned *)0, cfile); |
962dc4ab TL |
1592 | if (!is_identifier (token)) { |
1593 | parse_warn (cfile, | |
1594 | "expecting option space identifier"); | |
1595 | skip_to_semi (cfile); | |
1596 | return 0; | |
1597 | } | |
98bd7ca0 DH |
1598 | encapsulated = NULL; |
1599 | if (!universe_hash_lookup(&encapsulated, universe_hash, | |
1600 | val, strlen(val), MDL)) { | |
a512d11b | 1601 | parse_warn(cfile, "unknown option space %s", val); |
98bd7ca0 DH |
1602 | skip_to_semi (cfile); |
1603 | return 0; | |
1604 | } | |
962dc4ab TL |
1605 | if (strlen (val) + tokix + 2 > sizeof (tokbuf)) |
1606 | goto toobig; | |
1607 | tokbuf [tokix++] = 'E'; | |
1608 | strcpy (&tokbuf [tokix], val); | |
1609 | tokix += strlen (val); | |
1610 | type = '.'; | |
1611 | has_encapsulation = 1; | |
1612 | break; | |
1613 | ||
6b4b0ec7 | 1614 | default: |
4615d498 | 1615 | parse_warn (cfile, "unknown data type %s", val); |
6b4b0ec7 TL |
1616 | skip_to_rbrace (cfile, recordp); |
1617 | if (recordp) | |
1618 | skip_to_semi (cfile); | |
1619 | return 0; | |
1620 | } | |
1621 | ||
1622 | if (tokix == sizeof tokbuf) { | |
962dc4ab | 1623 | toobig: |
4615d498 | 1624 | parse_warn (cfile, "too many types in record."); |
6b4b0ec7 TL |
1625 | skip_to_rbrace (cfile, recordp); |
1626 | if (recordp) | |
1627 | skip_to_semi (cfile); | |
1628 | return 0; | |
1629 | } | |
1630 | tokbuf [tokix++] = type; | |
1631 | ||
1632 | if (recordp) { | |
b3519f23 | 1633 | token = next_token (&val, (unsigned *)0, cfile); |
d8fc5060 TL |
1634 | if (arrayp > recordp) { |
1635 | if (tokix == sizeof tokbuf) { | |
1636 | parse_warn (cfile, | |
1637 | "too many types in record."); | |
1638 | skip_to_rbrace (cfile, 1); | |
1639 | skip_to_semi (cfile); | |
1640 | return 0; | |
1641 | } | |
1642 | arrayp = 0; | |
1643 | tokbuf[tokix++] = 'a'; | |
1644 | } | |
6b4b0ec7 TL |
1645 | if (token == COMMA) { |
1646 | if (no_more_in_record) { | |
4615d498 TL |
1647 | parse_warn (cfile, |
1648 | "%s must be at end of record.", | |
6b4b0ec7 TL |
1649 | type == 't' ? "text" : "string"); |
1650 | skip_to_rbrace (cfile, 1); | |
1651 | if (recordp) | |
1652 | skip_to_semi (cfile); | |
1653 | return 0; | |
1654 | } | |
b3519f23 | 1655 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 TL |
1656 | goto next_type; |
1657 | } | |
1658 | if (token != RBRACE) { | |
4615d498 | 1659 | parse_warn (cfile, "expecting right brace."); |
6b4b0ec7 TL |
1660 | skip_to_rbrace (cfile, 1); |
1661 | if (recordp) | |
1662 | skip_to_semi (cfile); | |
1663 | return 0; | |
1664 | } | |
1665 | } | |
1666 | if (!parse_semi (cfile)) { | |
4615d498 | 1667 | parse_warn (cfile, "semicolon expected."); |
6b4b0ec7 TL |
1668 | skip_to_semi (cfile); |
1669 | if (recordp) | |
1670 | skip_to_semi (cfile); | |
1671 | return 0; | |
1672 | } | |
962dc4ab TL |
1673 | if (has_encapsulation && arrayp) { |
1674 | parse_warn (cfile, | |
1675 | "Arrays of encapsulations don't make sense."); | |
1676 | return 0; | |
1677 | } | |
98bd7ca0 DH |
1678 | s = dmalloc(tokix + (arrayp ? 1 : 0) + 1, MDL); |
1679 | if (s == NULL) { | |
1680 | log_fatal("no memory for option format."); | |
1681 | } | |
1682 | memcpy(s, tokbuf, tokix); | |
1683 | if (arrayp) { | |
1684 | s[tokix++] = (arrayp > recordp) ? 'a' : 'A'; | |
1685 | } | |
1686 | s[tokix] = '\0'; | |
1687 | ||
b1b7b521 | 1688 | option -> format = s; |
f7fdb216 DH |
1689 | |
1690 | oldopt = NULL; | |
1691 | option_code_hash_lookup(&oldopt, option->universe->code_hash, | |
1692 | &option->code, 0, MDL); | |
1693 | if (oldopt) { | |
1694 | option_name_hash_delete(option->universe->name_hash, | |
1695 | oldopt->name, 0, MDL); | |
1696 | option_code_hash_delete(option->universe->code_hash, | |
1697 | &oldopt->code, 0, MDL); | |
1698 | ||
1699 | option_dereference(&oldopt, MDL); | |
6b4b0ec7 | 1700 | } |
f7fdb216 DH |
1701 | option_code_hash_add(option->universe->code_hash, &option->code, 0, |
1702 | option, MDL); | |
1703 | option_name_hash_add(option->universe->name_hash, option->name, 0, | |
1704 | option, MDL); | |
98bd7ca0 DH |
1705 | if (has_encapsulation) { |
1706 | /* INSIST(tokbuf[0] == 'E'); */ | |
1707 | /* INSIST(encapsulated != NULL); */ | |
1708 | if (!option_code_hash_lookup(&encapsulated->enc_opt, | |
1709 | option->universe->code_hash, | |
1710 | &option->code, 0, MDL)) { | |
1711 | log_fatal("error finding encapsulated option (%s:%d)", | |
1712 | MDL); | |
1713 | } | |
1714 | } | |
6b4b0ec7 TL |
1715 | return 1; |
1716 | } | |
1717 | ||
028b1f6a TL |
1718 | /* |
1719 | * base64 :== NUMBER_OR_STRING | |
1720 | */ | |
1721 | ||
1722 | int parse_base64 (data, cfile) | |
1723 | struct data_string *data; | |
1724 | struct parse *cfile; | |
1725 | { | |
1726 | enum dhcp_token token; | |
1727 | const char *val; | |
8f01f9ec | 1728 | int i, j, k; |
028b1f6a | 1729 | unsigned acc = 0; |
6b474b5b TL |
1730 | static unsigned char |
1731 | from64 [] = {64, 64, 64, 64, 64, 64, 64, 64, /* \"#$%&' */ | |
1732 | 64, 64, 64, 62, 64, 64, 64, 63, /* ()*+,-./ */ | |
1733 | 52, 53, 54, 55, 56, 57, 58, 59, /* 01234567 */ | |
d758ad8c | 1734 | 60, 61, 64, 64, 64, 64, 64, 64, /* 89:;<=>? */ |
6b474b5b TL |
1735 | 64, 0, 1, 2, 3, 4, 5, 6, /* @ABCDEFG */ |
1736 | 7, 8, 9, 10, 11, 12, 13, 14, /* HIJKLMNO */ | |
1737 | 15, 16, 17, 18, 19, 20, 21, 22, /* PQRSTUVW */ | |
1738 | 23, 24, 25, 64, 64, 64, 64, 64, /* XYZ[\]^_ */ | |
1739 | 64, 26, 27, 28, 29, 30, 31, 32, /* 'abcdefg */ | |
1740 | 33, 34, 35, 36, 37, 38, 39, 40, /* hijklmno */ | |
1741 | 41, 42, 43, 44, 45, 46, 47, 48, /* pqrstuvw */ | |
630786fc | 1742 | 49, 50, 51, 64, 64, 64, 64, 64}; /* xyz{|}~ */ |
8f01f9ec TL |
1743 | struct string_list *bufs = (struct string_list *)0, |
1744 | *last = (struct string_list *)0, | |
1745 | *t; | |
1746 | int cc = 0; | |
1747 | int terminated = 0; | |
028b1f6a | 1748 | |
8f01f9ec TL |
1749 | /* It's possible for a + or a / to cause a base64 quantity to be |
1750 | tokenized into more than one token, so we have to parse them all | |
1751 | in before decoding. */ | |
1752 | do { | |
b3519f23 | 1753 | unsigned l; |
8f01f9ec | 1754 | |
b3519f23 | 1755 | token = next_token (&val, &l, cfile); |
8f01f9ec TL |
1756 | t = dmalloc (l + sizeof *t, MDL); |
1757 | if (!t) | |
1758 | log_fatal ("no memory for base64 buffer."); | |
1759 | memset (t, 0, (sizeof *t) - 1); | |
b3519f23 | 1760 | memcpy (t -> string, val, l + 1); |
8f01f9ec TL |
1761 | cc += l; |
1762 | if (last) | |
1763 | last -> next = t; | |
1764 | else | |
1765 | bufs = t; | |
1766 | last = t; | |
b3519f23 | 1767 | token = peek_token (&val, (unsigned *)0, cfile); |
8f01f9ec | 1768 | } while (token == NUMBER_OR_NAME || token == NAME || token == EQUAL || |
2f98b84e TL |
1769 | token == NUMBER || token == PLUS || token == SLASH || |
1770 | token == STRING); | |
8f01f9ec TL |
1771 | |
1772 | data -> len = cc; | |
028b1f6a TL |
1773 | data -> len = (data -> len * 3) / 4; |
1774 | if (!buffer_allocate (&data -> buffer, data -> len, MDL)) { | |
1775 | parse_warn (cfile, "can't allocate buffer for base64 data."); | |
1776 | data -> len = 0; | |
1777 | data -> data = (unsigned char *)0; | |
1778 | return 0; | |
1779 | } | |
1780 | ||
8f01f9ec TL |
1781 | j = k = 0; |
1782 | for (t = bufs; t; t = t -> next) { | |
1783 | for (i = 0; t -> string [i]; i++) { | |
1784 | unsigned foo = t -> string [i]; | |
1785 | if (terminated && foo != '=') { | |
1786 | parse_warn (cfile, | |
1787 | "stuff after base64 '=' terminator: %s.", | |
1788 | &t -> string [i]); | |
1789 | goto bad; | |
1790 | } | |
028b1f6a TL |
1791 | if (foo < ' ' || foo > 'z') { |
1792 | bad64: | |
1793 | parse_warn (cfile, | |
8f01f9ec TL |
1794 | "invalid base64 character %d.", |
1795 | t -> string [i]); | |
1796 | bad: | |
028b1f6a | 1797 | data_string_forget (data, MDL); |
8f01f9ec | 1798 | goto out; |
028b1f6a | 1799 | } |
8f01f9ec TL |
1800 | if (foo == '=') |
1801 | terminated = 1; | |
1802 | else { | |
1803 | foo = from64 [foo - ' ']; | |
1804 | if (foo == 64) | |
1805 | goto bad64; | |
1806 | acc = (acc << 6) + foo; | |
1807 | switch (k % 4) { | |
1808 | case 0: | |
1809 | break; | |
1810 | case 1: | |
1811 | data -> buffer -> data [j++] = (acc >> 4); | |
1812 | acc = acc & 0x0f; | |
1813 | break; | |
1814 | ||
1815 | case 2: | |
1816 | data -> buffer -> data [j++] = (acc >> 2); | |
1817 | acc = acc & 0x03; | |
1818 | break; | |
1819 | case 3: | |
1820 | data -> buffer -> data [j++] = acc; | |
1821 | acc = 0; | |
1822 | break; | |
1823 | } | |
1824 | } | |
1825 | k++; | |
1826 | } | |
1827 | } | |
1828 | if (k % 4) { | |
1829 | if (acc) { | |
1830 | parse_warn (cfile, | |
1831 | "partial base64 value left over: %d.", | |
1832 | acc); | |
028b1f6a TL |
1833 | } |
1834 | } | |
028b1f6a TL |
1835 | data -> len = j; |
1836 | data -> data = data -> buffer -> data; | |
8f01f9ec TL |
1837 | out: |
1838 | for (t = bufs; t; t = last) { | |
1839 | last = t -> next; | |
1840 | dfree (t, MDL); | |
1841 | } | |
1842 | if (data -> len) | |
1843 | return 1; | |
1844 | else | |
1845 | return 0; | |
028b1f6a TL |
1846 | } |
1847 | ||
1848 | ||
be6be08d | 1849 | /* |
c57db45c SK |
1850 | * colon-separated-hex-list :== NUMBER | |
1851 | * NUMBER COLON colon-separated-hex-list | |
be6be08d TL |
1852 | */ |
1853 | ||
02a015fb TL |
1854 | int parse_cshl (data, cfile) |
1855 | struct data_string *data; | |
4615d498 | 1856 | struct parse *cfile; |
4761e04b | 1857 | { |
c5b0f529 | 1858 | u_int8_t ibuf [128]; |
b1b7b521 TL |
1859 | unsigned ilen = 0; |
1860 | unsigned tlen = 0; | |
4761e04b TL |
1861 | struct option_tag *sl = (struct option_tag *)0; |
1862 | struct option_tag *next, **last = &sl; | |
02a015fb | 1863 | enum dhcp_token token; |
b1b7b521 | 1864 | const char *val; |
02a015fb | 1865 | unsigned char *rvp; |
4761e04b TL |
1866 | |
1867 | do { | |
b3519f23 | 1868 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b | 1869 | if (token != NUMBER && token != NUMBER_OR_NAME) { |
4615d498 | 1870 | parse_warn (cfile, "expecting hexadecimal number."); |
4761e04b TL |
1871 | skip_to_semi (cfile); |
1872 | for (; sl; sl = next) { | |
1873 | next = sl -> next; | |
fdac15d9 | 1874 | dfree (sl, MDL); |
4761e04b | 1875 | } |
02a015fb | 1876 | return 0; |
4761e04b TL |
1877 | } |
1878 | if (ilen == sizeof ibuf) { | |
1879 | next = (struct option_tag *) | |
1880 | dmalloc (ilen - 1 + | |
fdac15d9 | 1881 | sizeof (struct option_tag), MDL); |
4761e04b | 1882 | if (!next) |
8ae2d595 | 1883 | log_fatal ("no memory for string list."); |
4761e04b TL |
1884 | memcpy (next -> data, ibuf, ilen); |
1885 | *last = next; | |
1886 | last = &next -> next; | |
1887 | tlen += ilen; | |
1888 | ilen = 0; | |
1889 | } | |
4615d498 | 1890 | convert_num (cfile, &ibuf [ilen++], val, 16, 8); |
4761e04b | 1891 | |
b3519f23 | 1892 | token = peek_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
1893 | if (token != COLON) |
1894 | break; | |
b3519f23 | 1895 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
1896 | } while (1); |
1897 | ||
4bd8800e | 1898 | if (!buffer_allocate (&data -> buffer, tlen + ilen, MDL)) |
8ae2d595 | 1899 | log_fatal ("no memory to store octet data."); |
02a015fb TL |
1900 | data -> data = &data -> buffer -> data [0]; |
1901 | data -> len = tlen + ilen; | |
1902 | data -> terminated = 0; | |
1903 | ||
b1b7b521 | 1904 | rvp = &data -> buffer -> data [0]; |
4761e04b TL |
1905 | while (sl) { |
1906 | next = sl -> next; | |
1907 | memcpy (rvp, sl -> data, sizeof ibuf); | |
1908 | rvp += sizeof ibuf; | |
fdac15d9 | 1909 | dfree (sl, MDL); |
4761e04b TL |
1910 | sl = next; |
1911 | } | |
1912 | ||
1913 | memcpy (rvp, ibuf, ilen); | |
02a015fb | 1914 | return 1; |
4761e04b | 1915 | } |
be6be08d TL |
1916 | |
1917 | /* | |
1918 | * executable-statements :== executable-statement executable-statements | | |
1919 | * executable-statement | |
1920 | * | |
1921 | * executable-statement :== | |
1922 | * IF if-statement | | |
1923 | * ADD class-name SEMI | | |
1924 | * BREAK SEMI | | |
1925 | * OPTION option-parameter SEMI | | |
1926 | * SUPERSEDE option-parameter SEMI | | |
1927 | * PREPEND option-parameter SEMI | | |
1928 | * APPEND option-parameter SEMI | |
1929 | */ | |
1930 | ||
f579f39f | 1931 | int parse_executable_statements (statements, cfile, lose, case_context) |
79a65726 | 1932 | struct executable_statement **statements; |
4615d498 | 1933 | struct parse *cfile; |
be6be08d | 1934 | int *lose; |
f579f39f | 1935 | enum expression_context case_context; |
be6be08d | 1936 | { |
79a65726 | 1937 | struct executable_statement **next; |
be6be08d | 1938 | |
79a65726 | 1939 | next = statements; |
f579f39f | 1940 | while (parse_executable_statement (next, cfile, lose, case_context)) |
be6be08d | 1941 | next = &((*next) -> next); |
02a015fb | 1942 | if (!*lose) |
79a65726 TL |
1943 | return 1; |
1944 | return 0; | |
be6be08d TL |
1945 | } |
1946 | ||
f579f39f | 1947 | int parse_executable_statement (result, cfile, lose, case_context) |
79a65726 | 1948 | struct executable_statement **result; |
4615d498 | 1949 | struct parse *cfile; |
be6be08d | 1950 | int *lose; |
f579f39f | 1951 | enum expression_context case_context; |
be6be08d | 1952 | { |
02a015fb | 1953 | enum dhcp_token token; |
b1b7b521 | 1954 | const char *val; |
253c8b6a | 1955 | unsigned len; |
79a65726 | 1956 | struct executable_statement base; |
be6be08d | 1957 | struct class *cta; |
272ef1bc | 1958 | struct option *option=NULL; |
b1013db7 | 1959 | struct option_cache *cache; |
253c8b6a | 1960 | struct expression **ep; |
b1b7b521 | 1961 | int known; |
0776fd12 | 1962 | int flag; |
88ab5737 | 1963 | int i; |
fa392aea | 1964 | struct dns_zone *zone; |
fa392aea | 1965 | isc_result_t status; |
d758ad8c | 1966 | char *s; |
be6be08d | 1967 | |
b3519f23 | 1968 | token = peek_token (&val, (unsigned *)0, cfile); |
b1013db7 | 1969 | switch (token) { |
5e864416 DH |
1970 | case DB_TIME_FORMAT: |
1971 | next_token(&val, NULL, cfile); | |
1972 | ||
1973 | token = next_token(&val, NULL, cfile); | |
1974 | if (token == DEFAULT) { | |
1975 | db_time_format = DEFAULT_TIME_FORMAT; | |
1976 | } else if (token == LOCAL) { | |
1977 | db_time_format = LOCAL_TIME_FORMAT; | |
1978 | } else { | |
1979 | parse_warn(cfile, "Expecting 'local' or 'default'."); | |
1980 | if (token != SEMI) | |
1981 | skip_to_semi(cfile); | |
1982 | *lose = 1; | |
1983 | return 0; | |
1984 | } | |
1985 | ||
1986 | token = next_token(&val, NULL, cfile); | |
1987 | if (token != SEMI) { | |
1988 | parse_warn(cfile, "Expecting a semicolon."); | |
1989 | *lose = 1; | |
1990 | return 0; | |
1991 | } | |
1992 | ||
1993 | /* We're done here. */ | |
1994 | return 1; | |
1995 | ||
be6be08d | 1996 | case IF: |
b3519f23 | 1997 | next_token (&val, (unsigned *)0, cfile); |
79a65726 TL |
1998 | return parse_if_statement (result, cfile, lose); |
1999 | ||
eb018e2b | 2000 | case TOKEN_ADD: |
b3519f23 TL |
2001 | token = next_token (&val, (unsigned *)0, cfile); |
2002 | token = next_token (&val, (unsigned *)0, cfile); | |
be6be08d | 2003 | if (token != STRING) { |
4615d498 | 2004 | parse_warn (cfile, "expecting class name."); |
be6be08d TL |
2005 | skip_to_semi (cfile); |
2006 | *lose = 1; | |
79a65726 | 2007 | return 0; |
be6be08d | 2008 | } |
20916cae TL |
2009 | cta = (struct class *)0; |
2010 | status = find_class (&cta, val, MDL); | |
2011 | if (status != ISC_R_SUCCESS) { | |
2012 | parse_warn (cfile, "class %s: %s", | |
2013 | val, isc_result_totext (status)); | |
be6be08d TL |
2014 | skip_to_semi (cfile); |
2015 | *lose = 1; | |
79a65726 | 2016 | return 0; |
be6be08d TL |
2017 | } |
2018 | if (!parse_semi (cfile)) { | |
2019 | *lose = 1; | |
79a65726 | 2020 | return 0; |
be6be08d | 2021 | } |
4bd8800e | 2022 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
2023 | log_fatal ("no memory for new statement."); |
2024 | (*result) -> op = add_statement; | |
2025 | (*result) -> data.add = cta; | |
be6be08d TL |
2026 | break; |
2027 | ||
2028 | case BREAK: | |
b3519f23 | 2029 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
2030 | if (!parse_semi (cfile)) { |
2031 | *lose = 1; | |
79a65726 | 2032 | return 0; |
be6be08d | 2033 | } |
4bd8800e | 2034 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
2035 | log_fatal ("no memory for new statement."); |
2036 | (*result) -> op = break_statement; | |
be6be08d TL |
2037 | break; |
2038 | ||
25541f2f | 2039 | case SEND: |
b3519f23 | 2040 | token = next_token (&val, (unsigned *)0, cfile); |
1898dcf7 | 2041 | known = 0; |
f7fdb216 DH |
2042 | status = parse_option_name (cfile, 0, &known, &option); |
2043 | if (status != ISC_R_SUCCESS || option == NULL) { | |
1898dcf7 TL |
2044 | *lose = 1; |
2045 | return 0; | |
2046 | } | |
f7fdb216 DH |
2047 | status = parse_option_statement(result, cfile, 1, option, |
2048 | send_option_statement); | |
2049 | option_dereference(&option, MDL); | |
2050 | return status; | |
25541f2f TL |
2051 | |
2052 | case SUPERSEDE: | |
be6be08d | 2053 | case OPTION: |
b3519f23 | 2054 | token = next_token (&val, (unsigned *)0, cfile); |
b1b7b521 | 2055 | known = 0; |
f7fdb216 DH |
2056 | status = parse_option_name (cfile, 0, &known, &option); |
2057 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2058 | *lose = 1; |
79a65726 | 2059 | return 0; |
be6be08d | 2060 | } |
f7fdb216 DH |
2061 | status = parse_option_statement(result, cfile, 1, option, |
2062 | supersede_option_statement); | |
2063 | option_dereference(&option, MDL); | |
2064 | return status; | |
be6be08d | 2065 | |
b1013db7 | 2066 | case ALLOW: |
0776fd12 TL |
2067 | flag = 1; |
2068 | goto pad; | |
b1013db7 | 2069 | case DENY: |
0776fd12 TL |
2070 | flag = 0; |
2071 | goto pad; | |
2072 | case IGNORE: | |
2073 | flag = 2; | |
2074 | pad: | |
b3519f23 | 2075 | token = next_token (&val, (unsigned *)0, cfile); |
b1013db7 | 2076 | cache = (struct option_cache *)0; |
2db25842 | 2077 | if (!parse_allow_deny (&cache, cfile, flag)) |
79a65726 | 2078 | return 0; |
4bd8800e | 2079 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
2080 | log_fatal ("no memory for new statement."); |
2081 | (*result) -> op = supersede_option_statement; | |
2082 | (*result) -> data.option = cache; | |
b1013db7 TL |
2083 | break; |
2084 | ||
be6be08d | 2085 | case DEFAULT: |
b3519f23 TL |
2086 | token = next_token (&val, (unsigned *)0, cfile); |
2087 | token = peek_token (&val, (unsigned *)0, cfile); | |
f579f39f TL |
2088 | if (token == COLON) |
2089 | goto switch_default; | |
b1b7b521 | 2090 | known = 0; |
f7fdb216 DH |
2091 | status = parse_option_name (cfile, 0, &known, &option); |
2092 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2093 | *lose = 1; |
79a65726 | 2094 | return 0; |
be6be08d | 2095 | } |
f7fdb216 DH |
2096 | status = parse_option_statement(result, cfile, 1, option, |
2097 | default_option_statement); | |
2098 | option_dereference(&option, MDL); | |
2099 | return status; | |
be6be08d TL |
2100 | |
2101 | case PREPEND: | |
b3519f23 | 2102 | token = next_token (&val, (unsigned *)0, cfile); |
b1b7b521 | 2103 | known = 0; |
f7fdb216 DH |
2104 | status = parse_option_name (cfile, 0, &known, &option); |
2105 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2106 | *lose = 1; |
79a65726 | 2107 | return 0; |
be6be08d | 2108 | } |
f7fdb216 DH |
2109 | status = parse_option_statement(result, cfile, 1, option, |
2110 | prepend_option_statement); | |
2111 | option_dereference(&option, MDL); | |
2112 | return status; | |
be6be08d TL |
2113 | |
2114 | case APPEND: | |
b3519f23 | 2115 | token = next_token (&val, (unsigned *)0, cfile); |
b1b7b521 | 2116 | known = 0; |
f7fdb216 DH |
2117 | status = parse_option_name (cfile, 0, &known, &option); |
2118 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2119 | *lose = 1; |
79a65726 | 2120 | return 0; |
be6be08d | 2121 | } |
f7fdb216 DH |
2122 | status = parse_option_statement(result, cfile, 1, option, |
2123 | append_option_statement); | |
2124 | option_dereference(&option, MDL); | |
2125 | return status; | |
be6be08d | 2126 | |
79a65726 | 2127 | case ON: |
b3519f23 | 2128 | token = next_token (&val, (unsigned *)0, cfile); |
79a65726 TL |
2129 | return parse_on_statement (result, cfile, lose); |
2130 | ||
f579f39f | 2131 | case SWITCH: |
b3519f23 | 2132 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2133 | return parse_switch_statement (result, cfile, lose); |
2134 | ||
2135 | case CASE: | |
b3519f23 | 2136 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2137 | if (case_context == context_any) { |
2138 | parse_warn (cfile, | |
2139 | "case statement in inappropriate scope."); | |
2140 | *lose = 1; | |
2141 | skip_to_semi (cfile); | |
2142 | return 0; | |
2143 | } | |
2144 | return parse_case_statement (result, | |
2145 | cfile, lose, case_context); | |
2146 | ||
2147 | switch_default: | |
b3519f23 | 2148 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2149 | if (case_context == context_any) { |
2150 | parse_warn (cfile, "switch default statement in %s", | |
2151 | "inappropriate scope."); | |
2152 | ||
2153 | *lose = 1; | |
2154 | return 0; | |
2155 | } else { | |
4bd8800e | 2156 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
2157 | log_fatal ("no memory for default statement."); |
2158 | (*result) -> op = default_statement; | |
2159 | return 1; | |
2160 | } | |
2161 | ||
31cb2a5f | 2162 | case DEFINE: |
f579f39f | 2163 | case TOKEN_SET: |
b3519f23 | 2164 | token = next_token (&val, (unsigned *)0, cfile); |
31cb2a5f TL |
2165 | if (token == DEFINE) |
2166 | flag = 1; | |
2167 | else | |
2168 | flag = 0; | |
f579f39f | 2169 | |
b3519f23 | 2170 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2171 | if (token != NAME && token != NUMBER_OR_NAME) { |
2172 | parse_warn (cfile, | |
2173 | "%s can't be a variable name", val); | |
2174 | badset: | |
2175 | skip_to_semi (cfile); | |
2176 | *lose = 1; | |
2177 | return 0; | |
2178 | } | |
2179 | ||
4bd8800e | 2180 | if (!executable_statement_allocate (result, MDL)) |
f579f39f | 2181 | log_fatal ("no memory for set statement."); |
31cb2a5f | 2182 | (*result) -> op = flag ? define_statement : set_statement; |
fdac15d9 | 2183 | (*result) -> data.set.name = dmalloc (strlen (val) + 1, MDL); |
f579f39f TL |
2184 | if (!(*result)->data.set.name) |
2185 | log_fatal ("can't allocate variable name"); | |
2186 | strcpy ((*result) -> data.set.name, val); | |
b3519f23 | 2187 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f | 2188 | |
31cb2a5f TL |
2189 | if (token == LPAREN) { |
2190 | struct string_list *head, *cur, *new; | |
2191 | struct expression *expr; | |
2192 | head = cur = (struct string_list *)0; | |
2193 | do { | |
b3519f23 TL |
2194 | token = next_token (&val, |
2195 | (unsigned *)0, cfile); | |
31cb2a5f TL |
2196 | if (token == RPAREN) |
2197 | break; | |
2198 | if (token != NAME && token != NUMBER_OR_NAME) { | |
2199 | parse_warn (cfile, | |
2200 | "expecting argument name"); | |
2201 | skip_to_rbrace (cfile, 0); | |
2202 | *lose = 1; | |
2203 | executable_statement_dereference | |
2204 | (result, MDL); | |
2205 | return 0; | |
2206 | } | |
2207 | new = ((struct string_list *) | |
2208 | dmalloc (sizeof (struct string_list) + | |
2209 | strlen (val), MDL)); | |
2210 | if (!new) | |
2211 | log_fatal ("can't allocate string."); | |
2212 | memset (new, 0, sizeof *new); | |
2213 | strcpy (new -> string, val); | |
2214 | if (cur) { | |
2215 | cur -> next = new; | |
2216 | cur = new; | |
2217 | } else { | |
2218 | head = cur = new; | |
2219 | } | |
b3519f23 TL |
2220 | token = next_token (&val, |
2221 | (unsigned *)0, cfile); | |
31cb2a5f TL |
2222 | } while (token == COMMA); |
2223 | ||
2224 | if (token != RPAREN) { | |
2225 | parse_warn (cfile, "expecting right paren."); | |
2226 | badx: | |
2227 | skip_to_semi (cfile); | |
f579f39f | 2228 | *lose = 1; |
31cb2a5f TL |
2229 | executable_statement_dereference (result, MDL); |
2230 | return 0; | |
2231 | } | |
2232 | ||
b3519f23 | 2233 | token = next_token (&val, (unsigned *)0, cfile); |
31cb2a5f TL |
2234 | if (token != LBRACE) { |
2235 | parse_warn (cfile, "expecting left brace."); | |
2236 | goto badx; | |
2237 | } | |
2238 | ||
2239 | expr = (struct expression *)0; | |
2240 | if (!(expression_allocate (&expr, MDL))) | |
2241 | log_fatal ("can't allocate expression."); | |
2242 | expr -> op = expr_function; | |
2243 | if (!fundef_allocate (&expr -> data.func, MDL)) | |
2244 | log_fatal ("can't allocate fundef."); | |
2245 | expr -> data.func -> args = head; | |
2246 | (*result) -> data.set.expr = expr; | |
2247 | ||
2248 | if (!(parse_executable_statements | |
2249 | (&expr -> data.func -> statements, cfile, lose, | |
2250 | case_context))) { | |
2251 | if (*lose) | |
2252 | goto badx; | |
2253 | } | |
2254 | ||
b3519f23 | 2255 | token = next_token (&val, (unsigned *)0, cfile); |
31cb2a5f TL |
2256 | if (token != RBRACE) { |
2257 | parse_warn (cfile, "expecting rigt brace."); | |
2258 | goto badx; | |
2259 | } | |
2260 | } else { | |
2261 | if (token != EQUAL) { | |
2262 | parse_warn (cfile, | |
2263 | "expecting '=' in %s statement.", | |
2264 | flag ? "define" : "set"); | |
2265 | goto badset; | |
2266 | } | |
2267 | ||
2268 | if (!parse_expression (&(*result) -> data.set.expr, | |
2269 | cfile, lose, context_any, | |
2270 | (struct expression **)0, | |
2271 | expr_none)) { | |
2272 | if (!*lose) | |
2273 | parse_warn (cfile, | |
2274 | "expecting expression."); | |
2275 | else | |
2276 | *lose = 1; | |
2277 | skip_to_semi (cfile); | |
2278 | executable_statement_dereference (result, MDL); | |
2279 | return 0; | |
2280 | } | |
98311e4b DH |
2281 | if (!parse_semi (cfile)) { |
2282 | *lose = 1; | |
2283 | executable_statement_dereference (result, MDL); | |
2284 | return 0; | |
2285 | } | |
f579f39f | 2286 | } |
f579f39f TL |
2287 | break; |
2288 | ||
fdac15d9 | 2289 | case UNSET: |
b3519f23 | 2290 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 | 2291 | |
b3519f23 | 2292 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
2293 | if (token != NAME && token != NUMBER_OR_NAME) { |
2294 | parse_warn (cfile, | |
2295 | "%s can't be a variable name", val); | |
2296 | badunset: | |
2297 | skip_to_semi (cfile); | |
2298 | *lose = 1; | |
2299 | return 0; | |
2300 | } | |
2301 | ||
4bd8800e | 2302 | if (!executable_statement_allocate (result, MDL)) |
fdac15d9 TL |
2303 | log_fatal ("no memory for set statement."); |
2304 | (*result) -> op = unset_statement; | |
2305 | (*result) -> data.unset = dmalloc (strlen (val) + 1, MDL); | |
2306 | if (!(*result)->data.unset) | |
2307 | log_fatal ("can't allocate variable name"); | |
2308 | strcpy ((*result) -> data.unset, val); | |
98311e4b DH |
2309 | if (!parse_semi (cfile)) { |
2310 | *lose = 1; | |
2311 | executable_statement_dereference (result, MDL); | |
2312 | return 0; | |
2313 | } | |
fdac15d9 TL |
2314 | break; |
2315 | ||
2316 | case EVAL: | |
b3519f23 | 2317 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 | 2318 | |
4bd8800e | 2319 | if (!executable_statement_allocate (result, MDL)) |
fdac15d9 TL |
2320 | log_fatal ("no memory for eval statement."); |
2321 | (*result) -> op = eval_statement; | |
2322 | ||
2323 | if (!parse_expression (&(*result) -> data.eval, | |
2324 | cfile, lose, context_data, /* XXX */ | |
2325 | (struct expression **)0, expr_none)) { | |
2326 | if (!*lose) | |
2327 | parse_warn (cfile, | |
2328 | "expecting data expression."); | |
2329 | else | |
2330 | *lose = 1; | |
2331 | skip_to_semi (cfile); | |
4bd8800e | 2332 | executable_statement_dereference (result, MDL); |
fdac15d9 TL |
2333 | return 0; |
2334 | } | |
98311e4b DH |
2335 | if (!parse_semi (cfile)) { |
2336 | *lose = 1; | |
2337 | executable_statement_dereference (result, MDL); | |
2338 | } | |
fdac15d9 TL |
2339 | break; |
2340 | ||
253c8b6a EH |
2341 | case EXECUTE: |
2342 | #ifdef ENABLE_EXECUTE | |
2343 | token = next_token(&val, NULL, cfile); | |
2344 | ||
2345 | if (!executable_statement_allocate (result, MDL)) | |
2346 | log_fatal ("no memory for execute statement."); | |
2347 | (*result)->op = execute_statement; | |
2348 | ||
2349 | token = next_token(&val, NULL, cfile); | |
2350 | if (token != LPAREN) { | |
2351 | parse_warn(cfile, "left parenthesis expected."); | |
2352 | skip_to_semi(cfile); | |
2353 | *lose = 1; | |
2354 | return 0; | |
2355 | } | |
2356 | ||
2357 | token = next_token(&val, &len, cfile); | |
2358 | if (token != STRING) { | |
2359 | parse_warn(cfile, "Expecting a quoted string."); | |
2360 | skip_to_semi(cfile); | |
2361 | *lose = 1; | |
2362 | return 0; | |
2363 | } | |
2364 | ||
2365 | (*result)->data.execute.command = dmalloc(len + 1, MDL); | |
2366 | if ((*result)->data.execute.command == NULL) | |
2367 | log_fatal("can't allocate command name"); | |
2368 | strcpy((*result)->data.execute.command, val); | |
2369 | ||
2370 | ep = &(*result)->data.execute.arglist; | |
2371 | (*result)->data.execute.argc = 0; | |
2372 | ||
2373 | while((token = next_token(&val, NULL, cfile)) == COMMA) { | |
2374 | if (!expression_allocate(ep, MDL)) | |
2375 | log_fatal ("can't allocate expression"); | |
2376 | ||
2377 | if (!parse_data_expression (&(*ep) -> data.arg.val, | |
2378 | cfile, lose)) { | |
2379 | if (!*lose) { | |
2380 | parse_warn (cfile, | |
2381 | "expecting expression."); | |
2382 | *lose = 1; | |
2383 | } | |
2384 | skip_to_semi(cfile); | |
2385 | *lose = 1; | |
2386 | return 0; | |
2387 | } | |
2388 | ep = &(*ep)->data.arg.next; | |
2389 | (*result)->data.execute.argc++; | |
2390 | } | |
2391 | ||
2392 | if (token != RPAREN) { | |
2393 | parse_warn(cfile, "right parenthesis expected."); | |
2394 | skip_to_semi(cfile); | |
2395 | *lose = 1; | |
2396 | return 0; | |
2397 | } | |
2398 | ||
2399 | if (!parse_semi (cfile)) { | |
2400 | *lose = 1; | |
2401 | executable_statement_dereference (result, MDL); | |
2402 | } | |
2403 | #else /* ! ENABLE_EXECUTE */ | |
2404 | parse_warn(cfile, "define ENABLE_EXECUTE in site.h to " | |
2405 | "enable execute(); expressions."); | |
2406 | skip_to_semi(cfile); | |
2407 | *lose = 1; | |
2408 | return 0; | |
2409 | #endif /* ENABLE_EXECUTE */ | |
2410 | break; | |
2411 | ||
1b234d44 | 2412 | case RETURN: |
b3519f23 | 2413 | token = next_token (&val, (unsigned *)0, cfile); |
1b234d44 DN |
2414 | |
2415 | if (!executable_statement_allocate (result, MDL)) | |
2416 | log_fatal ("no memory for return statement."); | |
2417 | (*result) -> op = return_statement; | |
2418 | ||
2419 | if (!parse_expression (&(*result) -> data.retval, | |
2420 | cfile, lose, context_data, | |
2421 | (struct expression **)0, expr_none)) { | |
2422 | if (!*lose) | |
2423 | parse_warn (cfile, | |
2424 | "expecting data expression."); | |
2425 | else | |
2426 | *lose = 1; | |
2427 | skip_to_semi (cfile); | |
2428 | executable_statement_dereference (result, MDL); | |
2429 | return 0; | |
2430 | } | |
98311e4b DH |
2431 | if (!parse_semi (cfile)) { |
2432 | *lose = 1; | |
2433 | executable_statement_dereference (result, MDL); | |
2434 | return 0; | |
2435 | } | |
1b234d44 DN |
2436 | break; |
2437 | ||
e7a9c293 | 2438 | case LOG: |
b3519f23 | 2439 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2440 | |
2441 | if (!executable_statement_allocate (result, MDL)) | |
2442 | log_fatal ("no memory for log statement."); | |
2443 | (*result) -> op = log_statement; | |
2444 | ||
b3519f23 | 2445 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2446 | if (token != LPAREN) { |
2447 | parse_warn (cfile, "left parenthesis expected."); | |
2448 | skip_to_semi (cfile); | |
2449 | *lose = 1; | |
2450 | return 0; | |
2451 | } | |
2452 | ||
b3519f23 | 2453 | token = peek_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2454 | i = 1; |
2455 | if (token == FATAL) { | |
2456 | (*result) -> data.log.priority = log_priority_fatal; | |
2457 | } else if (token == ERROR) { | |
2458 | (*result) -> data.log.priority = log_priority_error; | |
2459 | } else if (token == TOKEN_DEBUG) { | |
2460 | (*result) -> data.log.priority = log_priority_debug; | |
2461 | } else if (token == INFO) { | |
2462 | (*result) -> data.log.priority = log_priority_info; | |
2463 | } else { | |
2464 | (*result) -> data.log.priority = log_priority_debug; | |
2465 | i = 0; | |
2466 | } | |
2467 | if (i) { | |
b3519f23 TL |
2468 | token = next_token (&val, (unsigned *)0, cfile); |
2469 | token = next_token (&val, (unsigned *)0, cfile); | |
e7a9c293 DN |
2470 | if (token != COMMA) { |
2471 | parse_warn (cfile, "comma expected."); | |
2472 | skip_to_semi (cfile); | |
2473 | *lose = 1; | |
2474 | return 0; | |
2475 | } | |
2476 | } | |
2477 | ||
2478 | if (!(parse_data_expression | |
2479 | (&(*result) -> data.log.expr, cfile, lose))) { | |
2480 | skip_to_semi (cfile); | |
2481 | *lose = 1; | |
2482 | return 0; | |
2483 | } | |
2484 | ||
b3519f23 | 2485 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2486 | if (token != RPAREN) { |
2487 | parse_warn (cfile, "right parenthesis expected."); | |
2488 | skip_to_semi (cfile); | |
2489 | *lose = 1; | |
2490 | return 0; | |
2491 | } | |
2492 | ||
b3519f23 | 2493 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2494 | if (token != SEMI) { |
2495 | parse_warn (cfile, "semicolon expected."); | |
2496 | skip_to_semi (cfile); | |
2497 | *lose = 1; | |
2498 | return 0; | |
2499 | } | |
2500 | break; | |
5e864416 | 2501 | |
fa392aea TL |
2502 | /* Not really a statement, but we parse it here anyway |
2503 | because it's appropriate for all DHCP agents with | |
2504 | parsers. */ | |
2505 | case ZONE: | |
b3519f23 | 2506 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a | 2507 | zone = (struct dns_zone *)0; |
fa392aea TL |
2508 | if (!dns_zone_allocate (&zone, MDL)) |
2509 | log_fatal ("no memory for new zone."); | |
2510 | zone -> name = parse_host_name (cfile); | |
2511 | if (!zone -> name) { | |
e7a9c293 | 2512 | parse_warn (cfile, "expecting hostname."); |
98311e4b | 2513 | badzone: |
fa392aea TL |
2514 | *lose = 1; |
2515 | skip_to_semi (cfile); | |
2516 | dns_zone_dereference (&zone, MDL); | |
2517 | return 0; | |
2518 | } | |
88ab5737 TL |
2519 | i = strlen (zone -> name); |
2520 | if (zone -> name [i - 1] != '.') { | |
d758ad8c | 2521 | s = dmalloc ((unsigned)i + 2, MDL); |
98311e4b DH |
2522 | if (!s) { |
2523 | parse_warn (cfile, "no trailing '.' on zone"); | |
d758ad8c | 2524 | goto badzone; |
98311e4b | 2525 | } |
d758ad8c TL |
2526 | strcpy (s, zone -> name); |
2527 | s [i] = '.'; | |
2528 | s [i + 1] = 0; | |
2529 | dfree (zone -> name, MDL); | |
2530 | zone -> name = s; | |
88ab5737 | 2531 | } |
fa392aea TL |
2532 | if (!parse_zone (zone, cfile)) |
2533 | goto badzone; | |
fa392aea | 2534 | status = enter_dns_zone (zone); |
fa392aea | 2535 | if (status != ISC_R_SUCCESS) { |
98311e4b DH |
2536 | parse_warn (cfile, "dns zone key %s: %s", |
2537 | zone -> name, isc_result_totext (status)); | |
fa392aea TL |
2538 | dns_zone_dereference (&zone, MDL); |
2539 | return 0; | |
2540 | } | |
d758ad8c | 2541 | dns_zone_dereference (&zone, MDL); |
fa392aea TL |
2542 | return 1; |
2543 | ||
2544 | /* Also not really a statement, but same idea as above. */ | |
028b1f6a | 2545 | case KEY: |
b3519f23 | 2546 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a | 2547 | if (!parse_key (cfile)) { |
fa392aea | 2548 | *lose = 1; |
fa392aea TL |
2549 | return 0; |
2550 | } | |
028b1f6a | 2551 | return 1; |
e7a9c293 | 2552 | |
be6be08d | 2553 | default: |
588af269 | 2554 | if (config_universe && is_identifier (token)) { |
20916cae | 2555 | option = (struct option *)0; |
f7fdb216 DH |
2556 | option_name_hash_lookup(&option, |
2557 | config_universe->name_hash, | |
2558 | val, 0, MDL); | |
588af269 | 2559 | if (option) { |
b3519f23 TL |
2560 | token = next_token (&val, |
2561 | (unsigned *)0, cfile); | |
f7fdb216 DH |
2562 | status = parse_option_statement |
2563 | (result, cfile, 1, option, | |
2564 | supersede_option_statement); | |
2565 | option_dereference(&option, MDL); | |
2566 | return status; | |
588af269 TL |
2567 | } |
2568 | } | |
1b234d44 DN |
2569 | |
2570 | if (token == NUMBER_OR_NAME || token == NAME) { | |
2571 | /* This is rather ugly. Since function calls are | |
2572 | data expressions, fake up an eval statement. */ | |
2573 | if (!executable_statement_allocate (result, MDL)) | |
2574 | log_fatal ("no memory for eval statement."); | |
2575 | (*result) -> op = eval_statement; | |
2576 | ||
2577 | if (!parse_expression (&(*result) -> data.eval, | |
2578 | cfile, lose, context_data, | |
2579 | (struct expression **)0, | |
2580 | expr_none)) { | |
2581 | if (!*lose) | |
2582 | parse_warn (cfile, "expecting " | |
2583 | "function call."); | |
2584 | else | |
2585 | *lose = 1; | |
2586 | skip_to_semi (cfile); | |
2587 | executable_statement_dereference (result, MDL); | |
2588 | return 0; | |
2589 | } | |
98311e4b DH |
2590 | if (!parse_semi (cfile)) { |
2591 | *lose = 1; | |
2592 | executable_statement_dereference (result, MDL); | |
2593 | return 0; | |
2594 | } | |
1b234d44 DN |
2595 | break; |
2596 | } | |
2597 | ||
be6be08d | 2598 | *lose = 0; |
79a65726 | 2599 | return 0; |
be6be08d TL |
2600 | } |
2601 | ||
79a65726 TL |
2602 | return 1; |
2603 | } | |
2604 | ||
fa392aea TL |
2605 | /* zone-statements :== zone-statement | |
2606 | zone-statement zone-statements | |
2607 | zone-statement :== | |
2608 | PRIMARY ip-addresses SEMI | | |
2609 | SECONDARY ip-addresses SEMI | | |
028b1f6a TL |
2610 | key-reference SEMI |
2611 | ip-addresses :== ip-addr-or-hostname | | |
2612 | ip-addr-or-hostname COMMA ip-addresses | |
2613 | key-reference :== KEY STRING | | |
2614 | KEY identifier */ | |
fa392aea TL |
2615 | |
2616 | int parse_zone (struct dns_zone *zone, struct parse *cfile) | |
2617 | { | |
2618 | int token; | |
2619 | const char *val; | |
630786fc | 2620 | char *key_name; |
fa392aea TL |
2621 | struct option_cache *oc; |
2622 | int done = 0; | |
2623 | ||
b3519f23 | 2624 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2625 | if (token != LBRACE) { |
2626 | parse_warn (cfile, "expecting left brace"); | |
2627 | return 0; | |
2628 | } | |
2629 | ||
fa392aea | 2630 | do { |
b3519f23 | 2631 | token = peek_token (&val, (unsigned *)0, cfile); |
fa392aea TL |
2632 | switch (token) { |
2633 | case PRIMARY: | |
2634 | if (zone -> primary) { | |
2635 | parse_warn (cfile, | |
2636 | "more than one primary."); | |
2637 | skip_to_semi (cfile); | |
2638 | return 0; | |
2639 | } | |
2640 | if (!option_cache_allocate (&zone -> primary, MDL)) | |
2641 | log_fatal ("can't allocate primary option cache."); | |
2642 | oc = zone -> primary; | |
2643 | goto consemup; | |
2644 | ||
2645 | case SECONDARY: | |
2646 | if (zone -> secondary) { | |
2647 | parse_warn (cfile, "more than one secondary."); | |
2648 | skip_to_semi (cfile); | |
2649 | return 0; | |
2650 | } | |
2651 | if (!option_cache_allocate (&zone -> secondary, MDL)) | |
2652 | log_fatal ("can't allocate secondary."); | |
2653 | oc = zone -> secondary; | |
2654 | consemup: | |
b3519f23 | 2655 | token = next_token (&val, (unsigned *)0, cfile); |
fa392aea TL |
2656 | do { |
2657 | struct expression *expr = (struct expression *)0; | |
2658 | if (!parse_ip_addr_or_hostname (&expr, cfile, 0)) { | |
2659 | parse_warn (cfile, | |
2660 | "expecting IP addr or hostname."); | |
2661 | skip_to_semi (cfile); | |
2662 | return 0; | |
2663 | } | |
2664 | if (oc -> expression) { | |
2665 | struct expression *old = | |
2666 | (struct expression *)0; | |
2667 | expression_reference (&old, | |
2668 | oc -> expression, | |
2669 | MDL); | |
2670 | expression_dereference (&oc -> expression, | |
2671 | MDL); | |
2672 | if (!make_concat (&oc -> expression, | |
2673 | old, expr)) | |
2674 | log_fatal ("no memory for concat."); | |
2675 | expression_dereference (&expr, MDL); | |
2676 | expression_dereference (&old, MDL); | |
2677 | } else { | |
2678 | expression_reference (&oc -> expression, | |
2679 | expr, MDL); | |
2680 | expression_dereference (&expr, MDL); | |
2681 | } | |
b3519f23 | 2682 | token = next_token (&val, (unsigned *)0, cfile); |
fa392aea TL |
2683 | } while (token == COMMA); |
2684 | if (token != SEMI) { | |
2685 | parse_warn (cfile, "expecting semicolon."); | |
2686 | skip_to_semi (cfile); | |
2687 | return 0; | |
2688 | } | |
2689 | break; | |
2690 | ||
028b1f6a | 2691 | case KEY: |
b3519f23 TL |
2692 | token = next_token (&val, (unsigned *)0, cfile); |
2693 | token = peek_token (&val, (unsigned *)0, cfile); | |
630786fc | 2694 | if (token == STRING) { |
b3519f23 | 2695 | token = next_token (&val, (unsigned *)0, cfile); |
630786fc TL |
2696 | key_name = (char *)0; |
2697 | } else { | |
2698 | key_name = parse_host_name (cfile); | |
b49c02cc TL |
2699 | if (!key_name) { |
2700 | parse_warn (cfile, "expecting key name."); | |
2701 | skip_to_semi (cfile); | |
630786fc | 2702 | return 0; |
b49c02cc | 2703 | } |
630786fc | 2704 | val = key_name; |
fa392aea | 2705 | } |
49146f3c DN |
2706 | if (omapi_auth_key_lookup_name (&zone -> key, val) != |
2707 | ISC_R_SUCCESS) | |
fa392aea | 2708 | parse_warn (cfile, "unknown key %s", val); |
630786fc TL |
2709 | if (key_name) |
2710 | dfree (key_name, MDL); | |
fa392aea TL |
2711 | if (!parse_semi (cfile)) |
2712 | return 0; | |
2713 | break; | |
2714 | ||
2715 | default: | |
2716 | done = 1; | |
2717 | break; | |
2718 | } | |
2719 | } while (!done); | |
2720 | ||
b3519f23 | 2721 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2722 | if (token != RBRACE) { |
2723 | parse_warn (cfile, "expecting right brace."); | |
2724 | return 0; | |
2725 | } | |
fa392aea TL |
2726 | return 1; |
2727 | } | |
2728 | ||
028b1f6a TL |
2729 | /* key-statements :== key-statement | |
2730 | key-statement key-statements | |
2731 | key-statement :== | |
2732 | ALGORITHM host-name SEMI | | |
2733 | secret-definition SEMI | |
2734 | secret-definition :== SECRET base64val | | |
2735 | SECRET STRING */ | |
2736 | ||
2737 | int parse_key (struct parse *cfile) | |
2738 | { | |
2739 | int token; | |
2740 | const char *val; | |
2741 | int done = 0; | |
49146f3c DN |
2742 | struct auth_key *key; |
2743 | struct data_string ds; | |
028b1f6a | 2744 | isc_result_t status; |
2f98b84e | 2745 | char *s; |
028b1f6a | 2746 | |
49146f3c DN |
2747 | key = (struct auth_key *)0; |
2748 | if (omapi_auth_key_new (&key, MDL) != ISC_R_SUCCESS) | |
630786fc TL |
2749 | log_fatal ("no memory for key"); |
2750 | ||
b3519f23 | 2751 | token = peek_token (&val, (unsigned *)0, cfile); |
630786fc | 2752 | if (token == STRING) { |
b3519f23 | 2753 | token = next_token (&val, (unsigned *)0, cfile); |
630786fc TL |
2754 | key -> name = dmalloc (strlen (val) + 1, MDL); |
2755 | if (!key -> name) | |
2756 | log_fatal ("no memory for key name."); | |
2757 | strcpy (key -> name, val); | |
2758 | ||
2759 | } else { | |
2760 | key -> name = parse_host_name (cfile); | |
2761 | if (!key -> name) { | |
b49c02cc | 2762 | parse_warn (cfile, "expecting key name."); |
630786fc TL |
2763 | skip_to_semi (cfile); |
2764 | goto bad; | |
2765 | } | |
2766 | } | |
028b1f6a | 2767 | |
b3519f23 | 2768 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2769 | if (token != LBRACE) { |
2770 | parse_warn (cfile, "expecting left brace"); | |
630786fc | 2771 | goto bad; |
028b1f6a TL |
2772 | } |
2773 | ||
2774 | do { | |
b3519f23 | 2775 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2776 | switch (token) { |
2777 | case ALGORITHM: | |
2778 | if (key -> algorithm) { | |
2779 | parse_warn (cfile, | |
2780 | "key %s: too many algorithms", | |
2781 | key -> name); | |
2782 | goto rbad; | |
2783 | } | |
2784 | key -> algorithm = parse_host_name (cfile); | |
2785 | if (!key -> algorithm) { | |
2786 | parse_warn (cfile, | |
2787 | "expecting key algorithm name."); | |
2788 | goto rbad; | |
2789 | } | |
2790 | if (!parse_semi (cfile)) | |
2791 | goto rbad; | |
2f98b84e TL |
2792 | /* If the algorithm name isn't an FQDN, tack on |
2793 | the .SIG-ALG.REG.NET. domain. */ | |
35155613 | 2794 | s = strrchr (key -> algorithm, '.'); |
2f98b84e | 2795 | if (!s) { |
35155613 TL |
2796 | static char add [] = ".SIG-ALG.REG.INT."; |
2797 | s = dmalloc (strlen (key -> algorithm) + | |
2798 | sizeof (add), MDL); | |
2799 | if (!s) { | |
2800 | log_error ("no memory for key %s.", | |
2801 | "algorithm"); | |
2802 | goto rbad; | |
2803 | } | |
2804 | strcpy (s, key -> algorithm); | |
2805 | strcat (s, add); | |
2806 | dfree (key -> algorithm, MDL); | |
2807 | key -> algorithm = s; | |
2808 | } else if (s [1]) { | |
2809 | /* If there is no trailing '.', hack one in. */ | |
2810 | s = dmalloc (strlen (key -> algorithm) + 2, MDL); | |
2811 | if (!s) { | |
2812 | log_error ("no memory for key %s.", | |
2813 | key -> algorithm); | |
2814 | goto rbad; | |
2815 | } | |
2816 | strcpy (s, key -> algorithm); | |
2817 | strcat (s, "."); | |
2818 | dfree (key -> algorithm, MDL); | |
2819 | key -> algorithm = s; | |
2f98b84e | 2820 | } |
028b1f6a TL |
2821 | break; |
2822 | ||
2823 | case SECRET: | |
49146f3c | 2824 | if (key -> key) { |
028b1f6a TL |
2825 | parse_warn (cfile, "key %s: too many secrets", |
2826 | key -> name); | |
2827 | goto rbad; | |
2828 | } | |
49146f3c DN |
2829 | |
2830 | memset (&ds, 0, sizeof(ds)); | |
2831 | if (!parse_base64 (&ds, cfile)) | |
2832 | goto rbad; | |
2833 | status = omapi_data_string_new (&key -> key, ds.len, | |
2834 | MDL); | |
2835 | if (status != ISC_R_SUCCESS) | |
028b1f6a | 2836 | goto rbad; |
49146f3c DN |
2837 | memcpy (key -> key -> value, |
2838 | ds.buffer -> data, ds.len); | |
2839 | data_string_forget (&ds, MDL); | |
2840 | ||
028b1f6a TL |
2841 | if (!parse_semi (cfile)) |
2842 | goto rbad; | |
2843 | break; | |
2844 | ||
2845 | default: | |
2846 | done = 1; | |
2847 | break; | |
2848 | } | |
2849 | } while (!done); | |
2850 | if (token != RBRACE) { | |
2851 | parse_warn (cfile, "expecting right brace."); | |
2852 | goto rbad; | |
2853 | } | |
13b0934e TL |
2854 | /* Allow the BIND 8 syntax, which has a semicolon after each |
2855 | closing brace. */ | |
b3519f23 | 2856 | token = peek_token (&val, (unsigned *)0, cfile); |
13b0934e | 2857 | if (token == SEMI) |
b3519f23 | 2858 | token = next_token (&val, (unsigned *)0, cfile); |
13b0934e TL |
2859 | |
2860 | /* Remember the key. */ | |
49146f3c | 2861 | status = omapi_auth_key_enter (key); |
028b1f6a TL |
2862 | if (status != ISC_R_SUCCESS) { |
2863 | parse_warn (cfile, "tsig key %s: %s", | |
2864 | key -> name, isc_result_totext (status)); | |
2865 | goto bad; | |
2866 | } | |
d758ad8c | 2867 | omapi_auth_key_dereference (&key, MDL); |
028b1f6a TL |
2868 | return 1; |
2869 | ||
2870 | rbad: | |
2871 | skip_to_rbrace (cfile, 1); | |
2872 | bad: | |
49146f3c | 2873 | omapi_auth_key_dereference (&key, MDL); |
028b1f6a TL |
2874 | return 0; |
2875 | } | |
630786fc | 2876 | |
79a65726 | 2877 | /* |
f579f39f TL |
2878 | * on-statement :== event-types LBRACE executable-statements RBRACE |
2879 | * event-types :== event-type OR event-types | | |
2880 | * event-type | |
79a65726 TL |
2881 | * event-type :== EXPIRY | COMMIT | RELEASE |
2882 | */ | |
2883 | ||
2884 | int parse_on_statement (result, cfile, lose) | |
2885 | struct executable_statement **result; | |
4615d498 | 2886 | struct parse *cfile; |
79a65726 TL |
2887 | int *lose; |
2888 | { | |
2889 | enum dhcp_token token; | |
b1b7b521 | 2890 | const char *val; |
79a65726 | 2891 | |
4bd8800e | 2892 | if (!executable_statement_allocate (result, MDL)) |
8ae2d595 | 2893 | log_fatal ("no memory for new statement."); |
33500c7d | 2894 | (*result) -> op = on_statement; |
79a65726 | 2895 | |
f579f39f | 2896 | do { |
b3519f23 | 2897 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2898 | switch (token) { |
2899 | case EXPIRY: | |
2900 | (*result) -> data.on.evtypes |= ON_EXPIRY; | |
2901 | break; | |
79a65726 | 2902 | |
f579f39f | 2903 | case COMMIT: |
fdac15d9 | 2904 | (*result) -> data.on.evtypes |= ON_COMMIT; |
f579f39f TL |
2905 | break; |
2906 | ||
2907 | case RELEASE: | |
fdac15d9 | 2908 | (*result) -> data.on.evtypes |= ON_RELEASE; |
f579f39f TL |
2909 | break; |
2910 | ||
b49c02cc TL |
2911 | case TRANSMISSION: |
2912 | (*result) -> data.on.evtypes |= ON_TRANSMISSION; | |
2913 | break; | |
2914 | ||
f579f39f TL |
2915 | default: |
2916 | parse_warn (cfile, "expecting a lease event type"); | |
2917 | skip_to_semi (cfile); | |
2918 | *lose = 1; | |
4bd8800e | 2919 | executable_statement_dereference (result, MDL); |
fdac15d9 | 2920 | return 0; |
f579f39f | 2921 | } |
b3519f23 | 2922 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f | 2923 | } while (token == OR); |
79a65726 | 2924 | |
f579f39f TL |
2925 | /* Semicolon means no statements. */ |
2926 | if (token == SEMI) | |
2927 | return 1; | |
2928 | ||
79a65726 | 2929 | if (token != LBRACE) { |
4615d498 | 2930 | parse_warn (cfile, "left brace expected."); |
79a65726 TL |
2931 | skip_to_semi (cfile); |
2932 | *lose = 1; | |
4bd8800e | 2933 | executable_statement_dereference (result, MDL); |
79a65726 TL |
2934 | return 0; |
2935 | } | |
2936 | if (!parse_executable_statements (&(*result) -> data.on.statements, | |
f579f39f | 2937 | cfile, lose, context_any)) { |
79a65726 TL |
2938 | if (*lose) { |
2939 | /* Try to even things up. */ | |
2940 | do { | |
b3519f23 TL |
2941 | token = next_token (&val, |
2942 | (unsigned *)0, cfile); | |
0b69dcc8 | 2943 | } while (token != END_OF_FILE && token != RBRACE); |
4bd8800e | 2944 | executable_statement_dereference (result, MDL); |
79a65726 TL |
2945 | return 0; |
2946 | } | |
2947 | } | |
b3519f23 | 2948 | token = next_token (&val, (unsigned *)0, cfile); |
79a65726 | 2949 | if (token != RBRACE) { |
4615d498 | 2950 | parse_warn (cfile, "right brace expected."); |
79a65726 TL |
2951 | skip_to_semi (cfile); |
2952 | *lose = 1; | |
4bd8800e | 2953 | executable_statement_dereference (result, MDL); |
79a65726 TL |
2954 | return 0; |
2955 | } | |
2956 | return 1; | |
be6be08d TL |
2957 | } |
2958 | ||
f579f39f TL |
2959 | /* |
2960 | * switch-statement :== LPAREN expr RPAREN LBRACE executable-statements RBRACE | |
2961 | * | |
2962 | */ | |
2963 | ||
2964 | int parse_switch_statement (result, cfile, lose) | |
2965 | struct executable_statement **result; | |
2966 | struct parse *cfile; | |
2967 | int *lose; | |
2968 | { | |
2969 | enum dhcp_token token; | |
2970 | const char *val; | |
2971 | ||
4bd8800e | 2972 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
2973 | log_fatal ("no memory for new statement."); |
2974 | (*result) -> op = switch_statement; | |
2975 | ||
b3519f23 | 2976 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2977 | if (token != LPAREN) { |
2978 | parse_warn (cfile, "expecting left brace."); | |
2979 | pfui: | |
2980 | *lose = 1; | |
2981 | skip_to_semi (cfile); | |
2982 | gnorf: | |
4bd8800e | 2983 | executable_statement_dereference (result, MDL); |
f579f39f TL |
2984 | return 0; |
2985 | } | |
2986 | ||
2987 | if (!parse_expression (&(*result) -> data.s_switch.expr, | |
2988 | cfile, lose, context_data_or_numeric, | |
2989 | (struct expression **)0, expr_none)) { | |
2990 | if (!*lose) { | |
2991 | parse_warn (cfile, | |
2992 | "expecting data or numeric expression."); | |
2993 | goto pfui; | |
2994 | } | |
2995 | goto gnorf; | |
2996 | } | |
2997 | ||
b3519f23 | 2998 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2999 | if (token != RPAREN) { |
3000 | parse_warn (cfile, "right paren expected."); | |
3001 | goto pfui; | |
3002 | } | |
3003 | ||
b3519f23 | 3004 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3005 | if (token != LBRACE) { |
3006 | parse_warn (cfile, "left brace expected."); | |
3007 | goto pfui; | |
3008 | } | |
3009 | if (!(parse_executable_statements | |
3010 | (&(*result) -> data.s_switch.statements, cfile, lose, | |
3011 | (is_data_expression ((*result) -> data.s_switch.expr) | |
3012 | ? context_data : context_numeric)))) { | |
3013 | if (*lose) { | |
3014 | skip_to_rbrace (cfile, 1); | |
4bd8800e | 3015 | executable_statement_dereference (result, MDL); |
f579f39f TL |
3016 | return 0; |
3017 | } | |
3018 | } | |
b3519f23 | 3019 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3020 | if (token != RBRACE) { |
3021 | parse_warn (cfile, "right brace expected."); | |
3022 | goto pfui; | |
3023 | } | |
3024 | return 1; | |
3025 | } | |
3026 | ||
3027 | /* | |
3028 | * case-statement :== CASE expr COLON | |
3029 | * | |
3030 | */ | |
3031 | ||
3032 | int parse_case_statement (result, cfile, lose, case_context) | |
3033 | struct executable_statement **result; | |
3034 | struct parse *cfile; | |
3035 | int *lose; | |
3036 | enum expression_context case_context; | |
3037 | { | |
3038 | enum dhcp_token token; | |
3039 | const char *val; | |
3040 | ||
4bd8800e | 3041 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
3042 | log_fatal ("no memory for new statement."); |
3043 | (*result) -> op = case_statement; | |
3044 | ||
3045 | if (!parse_expression (&(*result) -> data.c_case, | |
3046 | cfile, lose, case_context, | |
3047 | (struct expression **)0, expr_none)) | |
3048 | { | |
3049 | if (!*lose) { | |
3050 | parse_warn (cfile, "expecting %s expression.", | |
3051 | (case_context == context_data | |
3052 | ? "data" : "numeric")); | |
3053 | } | |
3054 | pfui: | |
3055 | *lose = 1; | |
3056 | skip_to_semi (cfile); | |
4bd8800e | 3057 | executable_statement_dereference (result, MDL); |
f579f39f TL |
3058 | return 0; |
3059 | } | |
3060 | ||
b3519f23 | 3061 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3062 | if (token != COLON) { |
3063 | parse_warn (cfile, "colon expected."); | |
3064 | goto pfui; | |
3065 | } | |
3066 | return 1; | |
3067 | } | |
3068 | ||
be6be08d TL |
3069 | /* |
3070 | * if-statement :== boolean-expression LBRACE executable-statements RBRACE | |
3071 | * else-statement | |
3072 | * | |
3073 | * else-statement :== <null> | | |
3074 | * ELSE LBRACE executable-statements RBRACE | | |
3075 | * ELSE IF if-statement | | |
3076 | * ELSIF if-statement | |
3077 | */ | |
3078 | ||
79a65726 TL |
3079 | int parse_if_statement (result, cfile, lose) |
3080 | struct executable_statement **result; | |
4615d498 | 3081 | struct parse *cfile; |
be6be08d TL |
3082 | int *lose; |
3083 | { | |
02a015fb | 3084 | enum dhcp_token token; |
b1b7b521 | 3085 | const char *val; |
fdac15d9 | 3086 | int parenp; |
be6be08d | 3087 | |
4bd8800e | 3088 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
3089 | log_fatal ("no memory for if statement."); |
3090 | ||
3091 | (*result) -> op = if_statement; | |
3092 | ||
b3519f23 | 3093 | token = peek_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3094 | if (token == LPAREN) { |
3095 | parenp = 1; | |
b3519f23 | 3096 | next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3097 | } else |
3098 | parenp = 0; | |
3099 | ||
3100 | ||
79a65726 TL |
3101 | if (!parse_boolean_expression (&(*result) -> data.ie.expr, |
3102 | cfile, lose)) { | |
be6be08d | 3103 | if (!*lose) |
4615d498 | 3104 | parse_warn (cfile, "boolean expression expected."); |
4bd8800e | 3105 | executable_statement_dereference (result, MDL); |
166e63eb | 3106 | *lose = 1; |
79a65726 | 3107 | return 0; |
be6be08d | 3108 | } |
02a015fb | 3109 | #if defined (DEBUG_EXPRESSION_PARSE) |
7b01f134 | 3110 | print_expression ("if condition", (*result) -> data.ie.expr); |
02a015fb | 3111 | #endif |
fdac15d9 | 3112 | if (parenp) { |
b3519f23 | 3113 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3114 | if (token != RPAREN) { |
3115 | parse_warn (cfile, "expecting right paren."); | |
3116 | *lose = 1; | |
4bd8800e | 3117 | executable_statement_dereference (result, MDL); |
fdac15d9 TL |
3118 | return 0; |
3119 | } | |
3120 | } | |
b3519f23 | 3121 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 3122 | if (token != LBRACE) { |
4615d498 | 3123 | parse_warn (cfile, "left brace expected."); |
be6be08d TL |
3124 | skip_to_semi (cfile); |
3125 | *lose = 1; | |
4bd8800e | 3126 | executable_statement_dereference (result, MDL); |
79a65726 | 3127 | return 0; |
be6be08d | 3128 | } |
d758ad8c | 3129 | if (!parse_executable_statements (&(*result) -> data.ie.tc, |
f579f39f | 3130 | cfile, lose, context_any)) { |
79a65726 TL |
3131 | if (*lose) { |
3132 | /* Try to even things up. */ | |
3133 | do { | |
b3519f23 TL |
3134 | token = next_token (&val, |
3135 | (unsigned *)0, cfile); | |
0b69dcc8 | 3136 | } while (token != END_OF_FILE && token != RBRACE); |
4bd8800e | 3137 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3138 | return 0; |
3139 | } | |
efc79acb | 3140 | } |
b3519f23 | 3141 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 3142 | if (token != RBRACE) { |
4615d498 | 3143 | parse_warn (cfile, "right brace expected."); |
be6be08d TL |
3144 | skip_to_semi (cfile); |
3145 | *lose = 1; | |
4bd8800e | 3146 | executable_statement_dereference (result, MDL); |
79a65726 | 3147 | return 0; |
be6be08d | 3148 | } |
b3519f23 | 3149 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d | 3150 | if (token == ELSE) { |
b3519f23 TL |
3151 | token = next_token (&val, (unsigned *)0, cfile); |
3152 | token = peek_token (&val, (unsigned *)0, cfile); | |
be6be08d | 3153 | if (token == IF) { |
b3519f23 | 3154 | token = next_token (&val, (unsigned *)0, cfile); |
d758ad8c | 3155 | if (!parse_if_statement (&(*result) -> data.ie.fc, |
79a65726 | 3156 | cfile, lose)) { |
166e63eb TL |
3157 | if (!*lose) |
3158 | parse_warn (cfile, | |
4bd8800e TL |
3159 | "expecting if statement"); |
3160 | executable_statement_dereference (result, MDL); | |
166e63eb TL |
3161 | *lose = 1; |
3162 | return 0; | |
79a65726 | 3163 | } |
be6be08d | 3164 | } else if (token != LBRACE) { |
4615d498 | 3165 | parse_warn (cfile, "left brace or if expected."); |
be6be08d TL |
3166 | skip_to_semi (cfile); |
3167 | *lose = 1; | |
4bd8800e | 3168 | executable_statement_dereference (result, MDL); |
79a65726 | 3169 | return 0; |
be6be08d | 3170 | } else { |
b3519f23 | 3171 | token = next_token (&val, (unsigned *)0, cfile); |
33500c7d | 3172 | if (!(parse_executable_statements |
d758ad8c | 3173 | (&(*result) -> data.ie.fc, |
f579f39f | 3174 | cfile, lose, context_any))) { |
4bd8800e | 3175 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3176 | return 0; |
3177 | } | |
b3519f23 | 3178 | token = next_token (&val, (unsigned *)0, cfile); |
25541f2f | 3179 | if (token != RBRACE) { |
4615d498 | 3180 | parse_warn (cfile, "right brace expected."); |
25541f2f TL |
3181 | skip_to_semi (cfile); |
3182 | *lose = 1; | |
4bd8800e | 3183 | executable_statement_dereference (result, MDL); |
79a65726 | 3184 | return 0; |
25541f2f | 3185 | } |
be6be08d TL |
3186 | } |
3187 | } else if (token == ELSIF) { | |
b3519f23 | 3188 | token = next_token (&val, (unsigned *)0, cfile); |
d758ad8c | 3189 | if (!parse_if_statement (&(*result) -> data.ie.fc, |
79a65726 | 3190 | cfile, lose)) { |
166e63eb TL |
3191 | if (!*lose) |
3192 | parse_warn (cfile, | |
3193 | "expecting conditional."); | |
4bd8800e | 3194 | executable_statement_dereference (result, MDL); |
166e63eb TL |
3195 | *lose = 1; |
3196 | return 0; | |
79a65726 | 3197 | } |
be6be08d | 3198 | } else |
d758ad8c | 3199 | (*result) -> data.ie.fc = (struct executable_statement *)0; |
be6be08d | 3200 | |
79a65726 | 3201 | return 1; |
be6be08d TL |
3202 | } |
3203 | ||
3204 | /* | |
3205 | * boolean_expression :== CHECK STRING | | |
3206 | * NOT boolean-expression | | |
3207 | * data-expression EQUAL data-expression | | |
2b965a44 | 3208 | * data-expression BANG EQUAL data-expression | |
dd328225 | 3209 | * data-expression REGEX_MATCH data-expression | |
be6be08d TL |
3210 | * boolean-expression AND boolean-expression | |
3211 | * boolean-expression OR boolean-expression | |
02a015fb | 3212 | * EXISTS OPTION-NAME |
be6be08d TL |
3213 | */ |
3214 | ||
02a015fb TL |
3215 | int parse_boolean_expression (expr, cfile, lose) |
3216 | struct expression **expr; | |
4615d498 | 3217 | struct parse *cfile; |
02a015fb TL |
3218 | int *lose; |
3219 | { | |
3220 | /* Parse an expression... */ | |
3221 | if (!parse_expression (expr, cfile, lose, context_boolean, | |
3222 | (struct expression **)0, expr_none)) | |
3223 | return 0; | |
3224 | ||
08514fb8 TL |
3225 | if (!is_boolean_expression (*expr) && |
3226 | (*expr) -> op != expr_variable_reference && | |
3227 | (*expr) -> op != expr_funcall) { | |
4615d498 | 3228 | parse_warn (cfile, "Expecting a boolean expression."); |
02a015fb | 3229 | *lose = 1; |
4bd8800e | 3230 | expression_dereference (expr, MDL); |
02a015fb TL |
3231 | return 0; |
3232 | } | |
3233 | return 1; | |
3234 | } | |
3235 | ||
3236 | /* | |
3237 | * data_expression :== SUBSTRING LPAREN data-expression COMMA | |
3238 | * numeric-expression COMMA | |
3239 | * numeric-expression RPAREN | | |
a82abfc7 | 3240 | * CONCAT LPAREN data-expression COMMA |
2727c1cf | 3241 | * data-expression RPAREN |
02a015fb | 3242 | * SUFFIX LPAREN data_expression COMMA |
a82abfc7 | 3243 | * numeric-expression RPAREN | |
2727c1cf DH |
3244 | * LCASE LPAREN data_expression RPAREN | |
3245 | * UCASE LPAREN data_expression RPAREN | | |
02a015fb TL |
3246 | * OPTION option_name | |
3247 | * HARDWARE | | |
3248 | * PACKET LPAREN numeric-expression COMMA | |
3249 | * numeric-expression RPAREN | | |
3250 | * STRING | | |
c57db45c | 3251 | * colon_separated_hex_list |
02a015fb TL |
3252 | */ |
3253 | ||
3254 | int parse_data_expression (expr, cfile, lose) | |
3255 | struct expression **expr; | |
4615d498 | 3256 | struct parse *cfile; |
02a015fb TL |
3257 | int *lose; |
3258 | { | |
3259 | /* Parse an expression... */ | |
3260 | if (!parse_expression (expr, cfile, lose, context_data, | |
3261 | (struct expression **)0, expr_none)) | |
3262 | return 0; | |
3263 | ||
08514fb8 TL |
3264 | if (!is_data_expression (*expr) && |
3265 | (*expr) -> op != expr_variable_reference && | |
3266 | (*expr) -> op != expr_funcall) { | |
98311e4b | 3267 | expression_dereference (expr, MDL); |
4615d498 | 3268 | parse_warn (cfile, "Expecting a data expression."); |
02a015fb TL |
3269 | *lose = 1; |
3270 | return 0; | |
3271 | } | |
3272 | return 1; | |
3273 | } | |
3274 | ||
3275 | /* | |
3276 | * numeric-expression :== EXTRACT_INT LPAREN data-expression | |
3277 | * COMMA number RPAREN | | |
3278 | * NUMBER | |
3279 | */ | |
3280 | ||
3281 | int parse_numeric_expression (expr, cfile, lose) | |
3282 | struct expression **expr; | |
4615d498 | 3283 | struct parse *cfile; |
02a015fb TL |
3284 | int *lose; |
3285 | { | |
3286 | /* Parse an expression... */ | |
3287 | if (!parse_expression (expr, cfile, lose, context_numeric, | |
3288 | (struct expression **)0, expr_none)) | |
3289 | return 0; | |
3290 | ||
08514fb8 TL |
3291 | if (!is_numeric_expression (*expr) && |
3292 | (*expr) -> op != expr_variable_reference && | |
3293 | (*expr) -> op != expr_funcall) { | |
98311e4b | 3294 | expression_dereference (expr, MDL); |
4615d498 | 3295 | parse_warn (cfile, "Expecting a numeric expression."); |
02a015fb TL |
3296 | *lose = 1; |
3297 | return 0; | |
3298 | } | |
3299 | return 1; | |
3300 | } | |
3301 | ||
9fb2fb28 TL |
3302 | /* |
3303 | * dns-expression :== | |
3304 | * UPDATE LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
3305 | * data-expression COMMA numeric-expression RPAREN | |
3306 | * DELETE LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
3307 | * data-expression RPAREN | |
3308 | * EXISTS LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
3309 | * data-expression RPAREN | |
3310 | * NOT EXISTS LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
3311 | * data-expression RPAREN | |
3312 | * ns-class :== IN | CHAOS | HS | NUMBER | |
3313 | * ns-type :== A | PTR | MX | TXT | NUMBER | |
3314 | */ | |
3315 | ||
3316 | int parse_dns_expression (expr, cfile, lose) | |
3317 | struct expression **expr; | |
3318 | struct parse *cfile; | |
3319 | int *lose; | |
3320 | { | |
3321 | /* Parse an expression... */ | |
3322 | if (!parse_expression (expr, cfile, lose, context_dns, | |
3323 | (struct expression **)0, expr_none)) | |
3324 | return 0; | |
3325 | ||
08514fb8 TL |
3326 | if (!is_dns_expression (*expr) && |
3327 | (*expr) -> op != expr_variable_reference && | |
3328 | (*expr) -> op != expr_funcall) { | |
98311e4b | 3329 | expression_dereference (expr, MDL); |
9fb2fb28 TL |
3330 | parse_warn (cfile, "Expecting a dns update subexpression."); |
3331 | *lose = 1; | |
3332 | return 0; | |
3333 | } | |
3334 | return 1; | |
3335 | } | |
3336 | ||
02a015fb | 3337 | /* Parse a subexpression that does not contain a binary operator. */ |
be6be08d | 3338 | |
02a015fb TL |
3339 | int parse_non_binary (expr, cfile, lose, context) |
3340 | struct expression **expr; | |
4615d498 | 3341 | struct parse *cfile; |
be6be08d | 3342 | int *lose; |
02a015fb | 3343 | enum expression_context context; |
be6be08d | 3344 | { |
02a015fb | 3345 | enum dhcp_token token; |
b1b7b521 | 3346 | const char *val; |
be6be08d | 3347 | struct collection *col; |
02a015fb | 3348 | struct option *option; |
08514fb8 | 3349 | struct expression *nexp, **ep; |
b1b7b521 | 3350 | int known; |
9fb2fb28 | 3351 | enum expr_op opcode; |
f579f39f | 3352 | const char *s; |
08514fb8 | 3353 | char *cptr; |
fdac15d9 | 3354 | int i; |
08514fb8 | 3355 | unsigned long u; |
9a7f6fcd | 3356 | isc_result_t status, code; |
b3519f23 | 3357 | unsigned len; |
be6be08d | 3358 | |
b3519f23 | 3359 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3360 | |
3361 | /* Check for unary operators... */ | |
3362 | switch (token) { | |
3363 | case CHECK: | |
b3519f23 TL |
3364 | token = next_token (&val, (unsigned *)0, cfile); |
3365 | token = next_token (&val, (unsigned *)0, cfile); | |
be6be08d | 3366 | if (token != STRING) { |
4615d498 | 3367 | parse_warn (cfile, "string expected."); |
be6be08d TL |
3368 | skip_to_semi (cfile); |
3369 | *lose = 1; | |
02a015fb | 3370 | return 0; |
be6be08d TL |
3371 | } |
3372 | for (col = collections; col; col = col -> next) | |
3373 | if (!strcmp (col -> name, val)) | |
3374 | break; | |
3375 | if (!col) { | |
4615d498 | 3376 | parse_warn (cfile, "unknown collection."); |
be6be08d | 3377 | *lose = 1; |
02a015fb | 3378 | return 0; |
be6be08d | 3379 | } |
4bd8800e | 3380 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3381 | log_fatal ("can't allocate expression"); |
02a015fb TL |
3382 | (*expr) -> op = expr_check; |
3383 | (*expr) -> data.check = col; | |
3384 | break; | |
be6be08d | 3385 | |
5e6fb153 | 3386 | case TOKEN_NOT: |
b3519f23 | 3387 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 | 3388 | if (context == context_dns) { |
b3519f23 | 3389 | token = peek_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3390 | goto not_exists; |
3391 | } | |
4bd8800e | 3392 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3393 | log_fatal ("can't allocate expression"); |
02a015fb TL |
3394 | (*expr) -> op = expr_not; |
3395 | if (!parse_non_binary (&(*expr) -> data.not, | |
9a7f6fcd | 3396 | cfile, lose, context_boolean)) { |
be6be08d | 3397 | if (!*lose) { |
4615d498 | 3398 | parse_warn (cfile, "expression expected"); |
be6be08d TL |
3399 | skip_to_semi (cfile); |
3400 | } | |
3401 | *lose = 1; | |
4bd8800e | 3402 | expression_dereference (expr, MDL); |
02a015fb | 3403 | return 0; |
be6be08d | 3404 | } |
9a7f6fcd TL |
3405 | if (!is_boolean_expression ((*expr) -> data.not)) { |
3406 | *lose = 1; | |
3407 | parse_warn (cfile, "boolean expression expected"); | |
3408 | skip_to_semi (cfile); | |
3409 | expression_dereference (expr, MDL); | |
3410 | return 0; | |
3411 | } | |
be6be08d | 3412 | break; |
be6be08d | 3413 | |
fcd9651f | 3414 | case LPAREN: |
b3519f23 | 3415 | token = next_token (&val, (unsigned *)0, cfile); |
fcd9651f TL |
3416 | if (!parse_expression (expr, cfile, lose, context, |
3417 | (struct expression **)0, expr_none)) { | |
3418 | if (!*lose) { | |
3419 | parse_warn (cfile, "expression expected"); | |
3420 | skip_to_semi (cfile); | |
3421 | } | |
3422 | *lose = 1; | |
3423 | return 0; | |
3424 | } | |
b3519f23 | 3425 | token = next_token (&val, (unsigned *)0, cfile); |
fcd9651f TL |
3426 | if (token != RPAREN) { |
3427 | *lose = 1; | |
3428 | parse_warn (cfile, "right paren expected"); | |
3429 | skip_to_semi (cfile); | |
3430 | return 0; | |
3431 | } | |
3432 | break; | |
3433 | ||
02a015fb | 3434 | case EXISTS: |
9fb2fb28 TL |
3435 | if (context == context_dns) |
3436 | goto ns_exists; | |
b3519f23 | 3437 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3438 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3439 | log_fatal ("can't allocate expression"); |
02a015fb | 3440 | (*expr) -> op = expr_exists; |
b1b7b521 | 3441 | known = 0; |
f7fdb216 DH |
3442 | /* Pass reference directly to expression structure. */ |
3443 | status = parse_option_name(cfile, 0, &known, | |
3444 | &(*expr)->data.option); | |
3445 | if (status != ISC_R_SUCCESS || | |
3446 | (*expr)->data.option == NULL) { | |
02a015fb | 3447 | *lose = 1; |
4bd8800e | 3448 | expression_dereference (expr, MDL); |
02a015fb | 3449 | return 0; |
be6be08d | 3450 | } |
02a015fb | 3451 | break; |
be6be08d | 3452 | |
1c5d5731 | 3453 | case STATIC: |
b3519f23 | 3454 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3455 | if (!expression_allocate (expr, MDL)) |
1c5d5731 TL |
3456 | log_fatal ("can't allocate expression"); |
3457 | (*expr) -> op = expr_static; | |
3458 | break; | |
3459 | ||
70330633 | 3460 | case KNOWN: |
b3519f23 | 3461 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3462 | if (!expression_allocate (expr, MDL)) |
70330633 TL |
3463 | log_fatal ("can't allocate expression"); |
3464 | (*expr) -> op = expr_known; | |
3465 | break; | |
3466 | ||
be6be08d | 3467 | case SUBSTRING: |
b3519f23 | 3468 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3469 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3470 | log_fatal ("can't allocate expression"); |
02a015fb | 3471 | (*expr) -> op = expr_substring; |
be6be08d | 3472 | |
b3519f23 | 3473 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3474 | if (token != LPAREN) { |
3475 | nolparen: | |
4bd8800e | 3476 | expression_dereference (expr, MDL); |
4615d498 | 3477 | parse_warn (cfile, "left parenthesis expected."); |
be6be08d | 3478 | *lose = 1; |
02a015fb | 3479 | return 0; |
be6be08d TL |
3480 | } |
3481 | ||
02a015fb TL |
3482 | if (!parse_data_expression (&(*expr) -> data.substring.expr, |
3483 | cfile, lose)) { | |
be6be08d | 3484 | nodata: |
4bd8800e | 3485 | expression_dereference (expr, MDL); |
962dc4ab TL |
3486 | if (!*lose) { |
3487 | parse_warn (cfile, | |
3488 | "expecting data expression."); | |
3489 | skip_to_semi (cfile); | |
3490 | *lose = 1; | |
3491 | } | |
02a015fb | 3492 | return 0; |
be6be08d TL |
3493 | } |
3494 | ||
b3519f23 | 3495 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3496 | if (token != COMMA) { |
3497 | nocomma: | |
4bd8800e | 3498 | expression_dereference (expr, MDL); |
4615d498 | 3499 | parse_warn (cfile, "comma expected."); |
be6be08d | 3500 | *lose = 1; |
02a015fb TL |
3501 | |
3502 | return 0; | |
be6be08d TL |
3503 | } |
3504 | ||
02a015fb TL |
3505 | if (!parse_numeric_expression |
3506 | (&(*expr) -> data.substring.offset,cfile, lose)) { | |
be6be08d TL |
3507 | nonum: |
3508 | if (!*lose) { | |
4615d498 TL |
3509 | parse_warn (cfile, |
3510 | "expecting numeric expression."); | |
be6be08d TL |
3511 | skip_to_semi (cfile); |
3512 | *lose = 1; | |
3513 | } | |
4bd8800e | 3514 | expression_dereference (expr, MDL); |
02a015fb | 3515 | return 0; |
be6be08d TL |
3516 | } |
3517 | ||
b3519f23 | 3518 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3519 | if (token != COMMA) |
3520 | goto nocomma; | |
3521 | ||
02a015fb TL |
3522 | if (!parse_numeric_expression |
3523 | (&(*expr) -> data.substring.len, cfile, lose)) | |
be6be08d TL |
3524 | goto nonum; |
3525 | ||
b3519f23 | 3526 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3527 | if (token != RPAREN) { |
3528 | norparen: | |
4615d498 | 3529 | parse_warn (cfile, "right parenthesis expected."); |
be6be08d | 3530 | *lose = 1; |
4bd8800e | 3531 | expression_dereference (expr, MDL); |
02a015fb | 3532 | return 0; |
be6be08d | 3533 | } |
02a015fb | 3534 | break; |
be6be08d TL |
3535 | |
3536 | case SUFFIX: | |
b3519f23 | 3537 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3538 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3539 | log_fatal ("can't allocate expression"); |
02a015fb | 3540 | (*expr) -> op = expr_suffix; |
be6be08d | 3541 | |
b3519f23 | 3542 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3543 | if (token != LPAREN) |
3544 | goto nolparen; | |
3545 | ||
02a015fb TL |
3546 | if (!parse_data_expression (&(*expr) -> data.suffix.expr, |
3547 | cfile, lose)) | |
be6be08d TL |
3548 | goto nodata; |
3549 | ||
b3519f23 | 3550 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3551 | if (token != COMMA) |
3552 | goto nocomma; | |
3553 | ||
b0f452b3 TL |
3554 | if (!parse_numeric_expression (&(*expr) -> data.suffix.len, |
3555 | cfile, lose)) | |
be6be08d TL |
3556 | goto nonum; |
3557 | ||
b3519f23 | 3558 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3559 | if (token != RPAREN) |
3560 | goto norparen; | |
02a015fb | 3561 | break; |
be6be08d | 3562 | |
2727c1cf DH |
3563 | case LCASE: |
3564 | token = next_token(&val, (unsigned *)0, cfile); | |
3565 | if (!expression_allocate(expr, MDL)) | |
3566 | log_fatal ("can't allocate expression"); | |
3567 | (*expr)->op = expr_lcase; | |
3568 | ||
3569 | token = next_token(&val, (unsigned *)0, cfile); | |
3570 | if (token != LPAREN) | |
3571 | goto nolparen; | |
3572 | ||
3573 | if (!parse_data_expression(&(*expr)->data.lcase, cfile, lose)) | |
3574 | goto nodata; | |
3575 | ||
3576 | token = next_token(&val, (unsigned *)0, cfile); | |
3577 | if (token != RPAREN) | |
3578 | goto norparen; | |
3579 | break; | |
3580 | ||
3581 | case UCASE: | |
3582 | token = next_token(&val, (unsigned *)0, cfile); | |
3583 | if (!expression_allocate(expr, MDL)) | |
3584 | log_fatal ("can't allocate expression"); | |
3585 | (*expr)->op = expr_ucase; | |
3586 | ||
3587 | token = next_token (&val, (unsigned *)0, cfile); | |
3588 | if (token != LPAREN) | |
3589 | goto nolparen; | |
3590 | ||
3591 | if (!parse_data_expression(&(*expr)->data.ucase, | |
3592 | cfile, lose)) | |
3593 | goto nodata; | |
3594 | ||
3595 | token = next_token(&val, (unsigned *)0, cfile); | |
3596 | if (token != RPAREN) | |
3597 | goto norparen; | |
3598 | break; | |
3599 | ||
a82abfc7 | 3600 | case CONCAT: |
b3519f23 | 3601 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3602 | if (!expression_allocate (expr, MDL)) |
a82abfc7 TL |
3603 | log_fatal ("can't allocate expression"); |
3604 | (*expr) -> op = expr_concat; | |
3605 | ||
b3519f23 | 3606 | token = next_token (&val, (unsigned *)0, cfile); |
a82abfc7 TL |
3607 | if (token != LPAREN) |
3608 | goto nolparen; | |
3609 | ||
3610 | if (!parse_data_expression (&(*expr) -> data.concat [0], | |
3611 | cfile, lose)) | |
3612 | goto nodata; | |
3613 | ||
b3519f23 | 3614 | token = next_token (&val, (unsigned *)0, cfile); |
a82abfc7 TL |
3615 | if (token != COMMA) |
3616 | goto nocomma; | |
3617 | ||
720c8262 | 3618 | concat_another: |
a82abfc7 TL |
3619 | if (!parse_data_expression (&(*expr) -> data.concat [1], |
3620 | cfile, lose)) | |
3621 | goto nodata; | |
3622 | ||
b3519f23 | 3623 | token = next_token (&val, (unsigned *)0, cfile); |
720c8262 TL |
3624 | |
3625 | if (token == COMMA) { | |
3626 | nexp = (struct expression *)0; | |
4bd8800e | 3627 | if (!expression_allocate (&nexp, MDL)) |
720c8262 TL |
3628 | log_fatal ("can't allocate at CONCAT2"); |
3629 | nexp -> op = expr_concat; | |
4bd8800e TL |
3630 | expression_reference (&nexp -> data.concat [0], |
3631 | *expr, MDL); | |
3632 | expression_dereference (expr, MDL); | |
3633 | expression_reference (expr, nexp, MDL); | |
d758ad8c | 3634 | expression_dereference (&nexp, MDL); |
720c8262 TL |
3635 | goto concat_another; |
3636 | } | |
3637 | ||
a82abfc7 TL |
3638 | if (token != RPAREN) |
3639 | goto norparen; | |
3640 | break; | |
3641 | ||
da38df14 | 3642 | case BINARY_TO_ASCII: |
b3519f23 | 3643 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3644 | if (!expression_allocate (expr, MDL)) |
da38df14 | 3645 | log_fatal ("can't allocate expression"); |
eb42f00e | 3646 | (*expr) -> op = expr_binary_to_ascii; |
da38df14 | 3647 | |
b3519f23 | 3648 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3649 | if (token != LPAREN) |
3650 | goto nolparen; | |
3651 | ||
3652 | if (!parse_numeric_expression (&(*expr) -> data.b2a.base, | |
3653 | cfile, lose)) | |
3654 | goto nodata; | |
3655 | ||
b3519f23 | 3656 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3657 | if (token != COMMA) |
3658 | goto nocomma; | |
3659 | ||
3660 | if (!parse_numeric_expression (&(*expr) -> data.b2a.width, | |
3661 | cfile, lose)) | |
3662 | goto nodata; | |
3663 | ||
b3519f23 | 3664 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3665 | if (token != COMMA) |
3666 | goto nocomma; | |
3667 | ||
c57db45c | 3668 | if (!parse_data_expression (&(*expr) -> data.b2a.separator, |
da38df14 TL |
3669 | cfile, lose)) |
3670 | goto nodata; | |
3671 | ||
b3519f23 | 3672 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3673 | if (token != COMMA) |
3674 | goto nocomma; | |
3675 | ||
3676 | if (!parse_data_expression (&(*expr) -> data.b2a.buffer, | |
3677 | cfile, lose)) | |
3678 | goto nodata; | |
3679 | ||
b3519f23 | 3680 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3681 | if (token != RPAREN) |
3682 | goto norparen; | |
3683 | break; | |
3684 | ||
3685 | case REVERSE: | |
b3519f23 | 3686 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3687 | if (!expression_allocate (expr, MDL)) |
da38df14 | 3688 | log_fatal ("can't allocate expression"); |
eb42f00e | 3689 | (*expr) -> op = expr_reverse; |
da38df14 | 3690 | |
b3519f23 | 3691 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3692 | if (token != LPAREN) |
3693 | goto nolparen; | |
3694 | ||
3695 | if (!(parse_numeric_expression | |
3696 | (&(*expr) -> data.reverse.width, cfile, lose))) | |
3697 | goto nodata; | |
3698 | ||
b3519f23 | 3699 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3700 | if (token != COMMA) |
3701 | goto nocomma; | |
3702 | ||
3703 | if (!(parse_data_expression | |
3704 | (&(*expr) -> data.reverse.buffer, cfile, lose))) | |
3705 | goto nodata; | |
3706 | ||
b3519f23 | 3707 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3708 | if (token != RPAREN) |
3709 | goto norparen; | |
3710 | break; | |
3711 | ||
fdac15d9 | 3712 | case PICK: |
79a65726 TL |
3713 | /* pick (a, b, c) actually produces an internal representation |
3714 | that looks like pick (a, pick (b, pick (c, nil))). */ | |
b3519f23 | 3715 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3716 | if (!(expression_allocate (expr, MDL))) |
79a65726 | 3717 | log_fatal ("can't allocate expression"); |
79a65726 | 3718 | |
b3519f23 | 3719 | token = next_token (&val, (unsigned *)0, cfile); |
79a65726 TL |
3720 | if (token != LPAREN) |
3721 | goto nolparen; | |
3722 | ||
d758ad8c TL |
3723 | nexp = (struct expression *)0; |
3724 | expression_reference (&nexp, *expr, MDL); | |
79a65726 | 3725 | do { |
d758ad8c TL |
3726 | nexp -> op = expr_pick_first_value; |
3727 | if (!(parse_data_expression | |
3728 | (&nexp -> data.pick_first_value.car, | |
3729 | cfile, lose))) | |
3730 | goto nodata; | |
79a65726 | 3731 | |
d758ad8c TL |
3732 | token = next_token (&val, (unsigned *)0, cfile); |
3733 | if (token == COMMA) { | |
3734 | struct expression *foo = (struct expression *)0; | |
3735 | if (!expression_allocate (&foo, MDL)) | |
3736 | log_fatal ("can't allocate expr"); | |
3737 | expression_reference | |
3738 | (&nexp -> data.pick_first_value.cdr, foo, MDL); | |
3739 | expression_dereference (&nexp, MDL); | |
3740 | expression_reference (&nexp, foo, MDL); | |
3741 | expression_dereference (&foo, MDL); | |
3742 | } | |
79a65726 | 3743 | } while (token == COMMA); |
d758ad8c | 3744 | expression_dereference (&nexp, MDL); |
79a65726 TL |
3745 | |
3746 | if (token != RPAREN) | |
3747 | goto norparen; | |
3748 | break; | |
3749 | ||
9fb2fb28 TL |
3750 | /* dns-update and dns-delete are present for historical |
3751 | purposes, but are deprecated in favor of ns-update | |
3752 | in combination with update, delete, exists and not | |
3753 | exists. */ | |
069e9f4c | 3754 | case DNS_UPDATE: |
9fb2fb28 | 3755 | case DNS_DELETE: |
069e9f4c | 3756 | #if !defined (NSUPDATE) |
4615d498 TL |
3757 | parse_warn (cfile, |
3758 | "Please rebuild dhcpd with --with-nsupdate."); | |
069e9f4c | 3759 | #endif |
b3519f23 | 3760 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 | 3761 | if (token == DNS_UPDATE) |
f579f39f | 3762 | opcode = expr_ns_add; |
9fb2fb28 TL |
3763 | else |
3764 | opcode = expr_ns_delete; | |
3765 | ||
b3519f23 | 3766 | token = next_token (&val, (unsigned *)0, cfile); |
069e9f4c TL |
3767 | if (token != LPAREN) |
3768 | goto nolparen; | |
3769 | ||
b3519f23 | 3770 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3771 | if (token != STRING) { |
3772 | parse_warn (cfile, | |
3773 | "parse_expression: expecting string."); | |
3774 | badnsupdate: | |
069e9f4c TL |
3775 | skip_to_semi (cfile); |
3776 | *lose = 1; | |
3777 | return 0; | |
3778 | } | |
9fb2fb28 TL |
3779 | |
3780 | if (!strcasecmp (val, "a")) | |
08514fb8 | 3781 | u = T_A; |
98bd7ca0 DH |
3782 | else if (!strcasecmp (val, "aaaa")) |
3783 | u = T_AAAA; | |
9fb2fb28 | 3784 | else if (!strcasecmp (val, "ptr")) |
08514fb8 | 3785 | u = T_PTR; |
9fb2fb28 | 3786 | else if (!strcasecmp (val, "mx")) |
08514fb8 | 3787 | u = T_MX; |
9fb2fb28 | 3788 | else if (!strcasecmp (val, "cname")) |
08514fb8 | 3789 | u = T_CNAME; |
9fb2fb28 | 3790 | else if (!strcasecmp (val, "TXT")) |
08514fb8 | 3791 | u = T_TXT; |
9fb2fb28 TL |
3792 | else { |
3793 | parse_warn (cfile, "unexpected rrtype: %s", val); | |
3794 | goto badnsupdate; | |
3795 | } | |
fdac15d9 | 3796 | |
08514fb8 TL |
3797 | s = (opcode == expr_ns_add |
3798 | ? "old-dns-update" | |
3799 | : "old-dns-delete"); | |
3800 | cptr = dmalloc (strlen (s) + 1, MDL); | |
3801 | if (!cptr) | |
3802 | log_fatal ("can't allocate name for %s", s); | |
3803 | strcpy (cptr, s); | |
4bd8800e | 3804 | if (!expression_allocate (expr, MDL)) |
fdac15d9 | 3805 | log_fatal ("can't allocate expression"); |
fdac15d9 | 3806 | (*expr) -> op = expr_funcall; |
08514fb8 | 3807 | (*expr) -> data.funcall.name = cptr; |
fdac15d9 | 3808 | |
08514fb8 TL |
3809 | /* Fake up a function call. */ |
3810 | ep = &(*expr) -> data.funcall.arglist; | |
3811 | if (!expression_allocate (ep, MDL)) | |
3812 | log_fatal ("can't allocate expression"); | |
3813 | (*ep) -> op = expr_arg; | |
3814 | if (!make_const_int (&(*ep) -> data.arg.val, u)) | |
fdac15d9 | 3815 | log_fatal ("can't allocate rrtype value."); |
069e9f4c | 3816 | |
b3519f23 | 3817 | token = next_token (&val, (unsigned *)0, cfile); |
069e9f4c TL |
3818 | if (token != COMMA) |
3819 | goto nocomma; | |
08514fb8 TL |
3820 | ep = &((*ep) -> data.arg.next); |
3821 | if (!expression_allocate (ep, MDL)) | |
3822 | log_fatal ("can't allocate expression"); | |
3823 | (*ep) -> op = expr_arg; | |
3824 | if (!(parse_data_expression (&(*ep) -> data.arg.val, | |
fdac15d9 | 3825 | cfile, lose))) |
069e9f4c TL |
3826 | goto nodata; |
3827 | ||
b3519f23 | 3828 | token = next_token (&val, (unsigned *)0, cfile); |
069e9f4c TL |
3829 | if (token != COMMA) |
3830 | goto nocomma; | |
3831 | ||
08514fb8 TL |
3832 | ep = &((*ep) -> data.arg.next); |
3833 | if (!expression_allocate (ep, MDL)) | |
3834 | log_fatal ("can't allocate expression"); | |
3835 | (*ep) -> op = expr_arg; | |
3836 | if (!(parse_data_expression (&(*ep) -> data.arg.val, | |
fdac15d9 | 3837 | cfile, lose))) |
069e9f4c TL |
3838 | goto nodata; |
3839 | ||
f579f39f | 3840 | if (opcode == expr_ns_add) { |
b3519f23 | 3841 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3842 | if (token != COMMA) |
3843 | goto nocomma; | |
3844 | ||
08514fb8 TL |
3845 | ep = &((*ep) -> data.arg.next); |
3846 | if (!expression_allocate (ep, MDL)) | |
3847 | log_fatal ("can't allocate expression"); | |
3848 | (*ep) -> op = expr_arg; | |
3849 | if (!(parse_numeric_expression (&(*ep) -> data.arg.val, | |
3850 | cfile, lose))) { | |
9fb2fb28 | 3851 | parse_warn (cfile, |
fdac15d9 | 3852 | "expecting numeric expression."); |
9fb2fb28 TL |
3853 | goto badnsupdate; |
3854 | } | |
069e9f4c | 3855 | } |
08514fb8 | 3856 | |
b3519f23 | 3857 | token = next_token (&val, (unsigned *)0, cfile); |
069e9f4c TL |
3858 | if (token != RPAREN) |
3859 | goto norparen; | |
3860 | break; | |
3861 | ||
9fb2fb28 | 3862 | case NS_UPDATE: |
88886e12 TL |
3863 | #if !defined (NSUPDATE) |
3864 | parse_warn (cfile, | |
3865 | "Please rebuild dhcpd with --with-nsupdate."); | |
3866 | #endif | |
b3519f23 | 3867 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3868 | if (!expression_allocate (expr, MDL)) |
88886e12 | 3869 | log_fatal ("can't allocate expression"); |
88886e12 | 3870 | |
b3519f23 | 3871 | token = next_token (&val, (unsigned *)0, cfile); |
88886e12 TL |
3872 | if (token != LPAREN) |
3873 | goto nolparen; | |
3874 | ||
9fb2fb28 TL |
3875 | nexp = *expr; |
3876 | do { | |
3877 | nexp -> op = expr_dns_transaction; | |
3878 | if (!(parse_dns_expression | |
3879 | (&nexp -> data.dns_transaction.car, | |
3880 | cfile, lose))) | |
3881 | { | |
f579f39f TL |
3882 | if (!*lose) |
3883 | parse_warn | |
3884 | (cfile, | |
3885 | "expecting dns expression."); | |
9fb2fb28 | 3886 | badnstrans: |
4bd8800e | 3887 | expression_dereference (expr, MDL); |
9fb2fb28 TL |
3888 | *lose = 1; |
3889 | return 0; | |
3890 | } | |
3891 | ||
b3519f23 | 3892 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3893 | |
3894 | if (token == COMMA) { | |
3895 | if (!(expression_allocate | |
3896 | (&nexp -> data.dns_transaction.cdr, | |
4bd8800e | 3897 | MDL))) |
9fb2fb28 TL |
3898 | log_fatal |
3899 | ("can't allocate expression"); | |
3900 | nexp = nexp -> data.dns_transaction.cdr; | |
3901 | } | |
3902 | } while (token == COMMA); | |
3903 | ||
3904 | if (token != RPAREN) | |
3905 | goto norparen; | |
3906 | break; | |
3907 | ||
3908 | /* NOT EXISTS is special cased above... */ | |
3909 | not_exists: | |
b3519f23 | 3910 | token = peek_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3911 | if (token != EXISTS) { |
3912 | parse_warn (cfile, "expecting DNS prerequisite."); | |
3913 | *lose = 1; | |
3914 | return 0; | |
3915 | } | |
9fb2fb28 TL |
3916 | opcode = expr_ns_not_exists; |
3917 | goto nsupdatecode; | |
f579f39f TL |
3918 | case TOKEN_ADD: |
3919 | opcode = expr_ns_add; | |
9fb2fb28 TL |
3920 | goto nsupdatecode; |
3921 | case TOKEN_DELETE: | |
3922 | opcode = expr_ns_delete; | |
3923 | goto nsupdatecode; | |
3924 | ns_exists: | |
3925 | opcode = expr_ns_exists; | |
3926 | nsupdatecode: | |
b3519f23 | 3927 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3928 | |
3929 | #if !defined (NSUPDATE) | |
3930 | parse_warn (cfile, | |
3931 | "Please rebuild dhcpd with --with-nsupdate."); | |
3932 | #endif | |
4bd8800e | 3933 | if (!expression_allocate (expr, MDL)) |
9fb2fb28 TL |
3934 | log_fatal ("can't allocate expression"); |
3935 | (*expr) -> op = opcode; | |
3936 | ||
b3519f23 | 3937 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3938 | if (token != LPAREN) |
3939 | goto nolparen; | |
3940 | ||
b3519f23 | 3941 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3942 | if (!is_identifier (token) && token != NUMBER) { |
3943 | parse_warn (cfile, "expecting identifier or number."); | |
3944 | badnsop: | |
4bd8800e | 3945 | expression_dereference (expr, MDL); |
88886e12 TL |
3946 | skip_to_semi (cfile); |
3947 | *lose = 1; | |
3948 | return 0; | |
3949 | } | |
9fb2fb28 TL |
3950 | |
3951 | if (token == NUMBER) | |
f579f39f | 3952 | (*expr) -> data.ns_add.rrclass = atoi (val); |
9fb2fb28 | 3953 | else if (!strcasecmp (val, "in")) |
f579f39f | 3954 | (*expr) -> data.ns_add.rrclass = C_IN; |
9fb2fb28 | 3955 | else if (!strcasecmp (val, "chaos")) |
f579f39f | 3956 | (*expr) -> data.ns_add.rrclass = C_CHAOS; |
9fb2fb28 | 3957 | else if (!strcasecmp (val, "hs")) |
f579f39f | 3958 | (*expr) -> data.ns_add.rrclass = C_HS; |
9fb2fb28 TL |
3959 | else { |
3960 | parse_warn (cfile, "unexpected rrclass: %s", val); | |
3961 | goto badnsop; | |
3962 | } | |
3963 | ||
b3519f23 | 3964 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3965 | if (token != COMMA) |
3966 | goto nocomma; | |
3967 | ||
b3519f23 | 3968 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3969 | if (!is_identifier (token) && token != NUMBER) { |
3970 | parse_warn (cfile, "expecting identifier or number."); | |
3971 | goto badnsop; | |
3972 | } | |
3973 | ||
3974 | if (token == NUMBER) | |
f579f39f | 3975 | (*expr) -> data.ns_add.rrtype = atoi (val); |
9fb2fb28 | 3976 | else if (!strcasecmp (val, "a")) |
f579f39f | 3977 | (*expr) -> data.ns_add.rrtype = T_A; |
98bd7ca0 DH |
3978 | else if (!strcasecmp (val, "aaaa")) |
3979 | (*expr) -> data.ns_add.rrtype = T_AAAA; | |
9fb2fb28 | 3980 | else if (!strcasecmp (val, "ptr")) |
f579f39f | 3981 | (*expr) -> data.ns_add.rrtype = T_PTR; |
9fb2fb28 | 3982 | else if (!strcasecmp (val, "mx")) |
f579f39f | 3983 | (*expr) -> data.ns_add.rrtype = T_MX; |
9fb2fb28 | 3984 | else if (!strcasecmp (val, "cname")) |
f579f39f | 3985 | (*expr) -> data.ns_add.rrtype = T_CNAME; |
9fb2fb28 | 3986 | else if (!strcasecmp (val, "TXT")) |
f579f39f | 3987 | (*expr) -> data.ns_add.rrtype = T_TXT; |
9fb2fb28 TL |
3988 | else { |
3989 | parse_warn (cfile, "unexpected rrtype: %s", val); | |
3990 | goto badnsop; | |
3991 | } | |
88886e12 | 3992 | |
b3519f23 | 3993 | token = next_token (&val, (unsigned *)0, cfile); |
88886e12 TL |
3994 | if (token != COMMA) |
3995 | goto nocomma; | |
3996 | ||
3997 | if (!(parse_data_expression | |
f579f39f | 3998 | (&(*expr) -> data.ns_add.rrname, cfile, lose))) |
88886e12 TL |
3999 | goto nodata; |
4000 | ||
b3519f23 | 4001 | token = next_token (&val, (unsigned *)0, cfile); |
88886e12 TL |
4002 | if (token != COMMA) |
4003 | goto nocomma; | |
4004 | ||
4005 | if (!(parse_data_expression | |
f579f39f | 4006 | (&(*expr) -> data.ns_add.rrdata, cfile, lose))) |
88886e12 TL |
4007 | goto nodata; |
4008 | ||
f579f39f | 4009 | if (opcode == expr_ns_add) { |
b3519f23 | 4010 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
4011 | if (token != COMMA) |
4012 | goto nocomma; | |
4013 | ||
4014 | if (!(parse_numeric_expression | |
f579f39f TL |
4015 | (&(*expr) -> data.ns_add.ttl, cfile, |
4016 | lose))) { | |
962dc4ab | 4017 | if (!*lose) |
9fb2fb28 | 4018 | parse_warn (cfile, |
962dc4ab TL |
4019 | "expecting numeric expression."); |
4020 | goto badnsupdate; | |
9fb2fb28 TL |
4021 | } |
4022 | } | |
4023 | ||
b3519f23 | 4024 | token = next_token (&val, (unsigned *)0, cfile); |
88886e12 TL |
4025 | if (token != RPAREN) |
4026 | goto norparen; | |
4027 | break; | |
4028 | ||
79a65726 TL |
4029 | case OPTION: |
4030 | case CONFIG_OPTION: | |
4bd8800e | 4031 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4032 | log_fatal ("can't allocate expression"); |
cd31814f TL |
4033 | (*expr) -> op = (token == OPTION |
4034 | ? expr_option | |
4035 | : expr_config_option); | |
b3519f23 | 4036 | token = next_token (&val, (unsigned *)0, cfile); |
b1b7b521 | 4037 | known = 0; |
f7fdb216 DH |
4038 | /* Pass reference directly to expression structure. */ |
4039 | status = parse_option_name(cfile, 0, &known, | |
4040 | &(*expr)->data.option); | |
4041 | if (status != ISC_R_SUCCESS || | |
4042 | (*expr)->data.option == NULL) { | |
be6be08d | 4043 | *lose = 1; |
4bd8800e | 4044 | expression_dereference (expr, MDL); |
02a015fb | 4045 | return 0; |
be6be08d | 4046 | } |
02a015fb | 4047 | break; |
be6be08d TL |
4048 | |
4049 | case HARDWARE: | |
b3519f23 | 4050 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4051 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4052 | log_fatal ("can't allocate expression"); |
02a015fb TL |
4053 | (*expr) -> op = expr_hardware; |
4054 | break; | |
be6be08d | 4055 | |
da38df14 | 4056 | case LEASED_ADDRESS: |
b3519f23 | 4057 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4058 | if (!expression_allocate (expr, MDL)) |
da38df14 TL |
4059 | log_fatal ("can't allocate expression"); |
4060 | (*expr) -> op = expr_leased_address; | |
4061 | break; | |
4062 | ||
9a7f6fcd | 4063 | case CLIENT_STATE: |
b3519f23 | 4064 | token = next_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
4065 | if (!expression_allocate (expr, MDL)) |
4066 | log_fatal ("can't allocate expression"); | |
4067 | (*expr) -> op = expr_client_state; | |
4068 | break; | |
4069 | ||
fdac15d9 | 4070 | case FILENAME: |
b3519f23 | 4071 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4072 | if (!expression_allocate (expr, MDL)) |
fdac15d9 TL |
4073 | log_fatal ("can't allocate expression"); |
4074 | (*expr) -> op = expr_filename; | |
4075 | break; | |
4076 | ||
4077 | case SERVER_NAME: | |
b3519f23 | 4078 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4079 | if (!expression_allocate (expr, MDL)) |
fdac15d9 TL |
4080 | log_fatal ("can't allocate expression"); |
4081 | (*expr) -> op = expr_sname; | |
4082 | break; | |
4083 | ||
069e9f4c | 4084 | case LEASE_TIME: |
b3519f23 | 4085 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4086 | if (!expression_allocate (expr, MDL)) |
069e9f4c TL |
4087 | log_fatal ("can't allocate expression"); |
4088 | (*expr) -> op = expr_lease_time; | |
4089 | break; | |
4090 | ||
f579f39f | 4091 | case TOKEN_NULL: |
b3519f23 | 4092 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4093 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4094 | log_fatal ("can't allocate expression"); |
4095 | (*expr) -> op = expr_null; | |
4096 | break; | |
4097 | ||
79a65726 | 4098 | case HOST_DECL_NAME: |
b3519f23 | 4099 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4100 | if (!expression_allocate (expr, MDL)) |
79a65726 TL |
4101 | log_fatal ("can't allocate expression"); |
4102 | (*expr) -> op = expr_host_decl_name; | |
4103 | break; | |
4104 | ||
846d7d54 | 4105 | case UPDATED_DNS_RR: |
b3519f23 | 4106 | token = next_token (&val, (unsigned *)0, cfile); |
06a8567c | 4107 | |
b3519f23 | 4108 | token = next_token (&val, (unsigned *)0, cfile); |
846d7d54 TL |
4109 | if (token != LPAREN) |
4110 | goto nolparen; | |
f579f39f | 4111 | |
b3519f23 | 4112 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4113 | if (token != STRING) { |
4114 | parse_warn (cfile, "expecting string."); | |
4115 | bad_rrtype: | |
4116 | *lose = 1; | |
4117 | return 0; | |
4118 | } | |
4119 | if (!strcasecmp (val, "a")) | |
4120 | s = "ddns-fwd-name"; | |
4121 | else if (!strcasecmp (val, "ptr")) | |
4122 | s = "ddns-rev-name"; | |
4123 | else { | |
4124 | parse_warn (cfile, "invalid DNS rrtype: %s", val); | |
4125 | goto bad_rrtype; | |
4126 | } | |
846d7d54 | 4127 | |
b3519f23 | 4128 | token = next_token (&val, (unsigned *)0, cfile); |
846d7d54 TL |
4129 | if (token != RPAREN) |
4130 | goto norparen; | |
4131 | ||
4bd8800e | 4132 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4133 | log_fatal ("can't allocate expression"); |
4134 | (*expr) -> op = expr_variable_reference; | |
4135 | (*expr) -> data.variable = | |
fdac15d9 | 4136 | dmalloc (strlen (s) + 1, MDL); |
f579f39f TL |
4137 | if (!(*expr) -> data.variable) |
4138 | log_fatal ("can't allocate variable name."); | |
4139 | strcpy ((*expr) -> data.variable, s); | |
06a8567c TL |
4140 | break; |
4141 | ||
be6be08d | 4142 | case PACKET: |
b3519f23 | 4143 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4144 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4145 | log_fatal ("can't allocate expression"); |
02a015fb | 4146 | (*expr) -> op = expr_packet; |
be6be08d | 4147 | |
b3519f23 | 4148 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4149 | if (token != LPAREN) |
4150 | goto nolparen; | |
4151 | ||
02a015fb TL |
4152 | if (!parse_numeric_expression (&(*expr) -> data.packet.offset, |
4153 | cfile, lose)) | |
be6be08d TL |
4154 | goto nonum; |
4155 | ||
b3519f23 | 4156 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4157 | if (token != COMMA) |
4158 | goto nocomma; | |
4159 | ||
02a015fb TL |
4160 | if (!parse_numeric_expression (&(*expr) -> data.packet.len, |
4161 | cfile, lose)) | |
be6be08d TL |
4162 | goto nonum; |
4163 | ||
b3519f23 | 4164 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4165 | if (token != RPAREN) |
4166 | goto norparen; | |
02a015fb | 4167 | break; |
be6be08d TL |
4168 | |
4169 | case STRING: | |
b3519f23 | 4170 | token = next_token (&val, &len, cfile); |
b1b7b521 | 4171 | if (!make_const_data (expr, (const unsigned char *)val, |
d758ad8c | 4172 | len, 1, 1, MDL)) |
8ae2d595 | 4173 | log_fatal ("can't make constant string expression."); |
02a015fb | 4174 | break; |
be6be08d | 4175 | |
be6be08d | 4176 | case EXTRACT_INT: |
b3519f23 TL |
4177 | token = next_token (&val, (unsigned *)0, cfile); |
4178 | token = next_token (&val, (unsigned *)0, cfile); | |
be6be08d | 4179 | if (token != LPAREN) { |
4615d498 | 4180 | parse_warn (cfile, "left parenthesis expected."); |
be6be08d | 4181 | *lose = 1; |
02a015fb | 4182 | return 0; |
be6be08d TL |
4183 | } |
4184 | ||
4bd8800e | 4185 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4186 | log_fatal ("can't allocate expression"); |
02a015fb TL |
4187 | |
4188 | if (!parse_data_expression (&(*expr) -> data.extract_int, | |
4189 | cfile, lose)) { | |
962dc4ab TL |
4190 | if (!*lose) { |
4191 | parse_warn (cfile, | |
4192 | "expecting data expression."); | |
4193 | skip_to_semi (cfile); | |
4194 | *lose = 1; | |
4195 | } | |
4bd8800e | 4196 | expression_dereference (expr, MDL); |
02a015fb | 4197 | return 0; |
be6be08d TL |
4198 | } |
4199 | ||
b3519f23 | 4200 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4201 | if (token != COMMA) { |
4615d498 | 4202 | parse_warn (cfile, "comma expected."); |
be6be08d | 4203 | *lose = 1; |
4bd8800e | 4204 | expression_dereference (expr, MDL); |
02a015fb | 4205 | return 0; |
be6be08d TL |
4206 | } |
4207 | ||
b3519f23 | 4208 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4209 | if (token != NUMBER) { |
4615d498 | 4210 | parse_warn (cfile, "number expected."); |
be6be08d | 4211 | *lose = 1; |
4bd8800e | 4212 | expression_dereference (expr, MDL); |
02a015fb | 4213 | return 0; |
be6be08d | 4214 | } |
be6be08d TL |
4215 | switch (atoi (val)) { |
4216 | case 8: | |
02a015fb | 4217 | (*expr) -> op = expr_extract_int8; |
be6be08d TL |
4218 | break; |
4219 | ||
4220 | case 16: | |
02a015fb | 4221 | (*expr) -> op = expr_extract_int16; |
be6be08d TL |
4222 | break; |
4223 | ||
4224 | case 32: | |
02a015fb | 4225 | (*expr) -> op = expr_extract_int32; |
be6be08d TL |
4226 | break; |
4227 | ||
4228 | default: | |
4615d498 TL |
4229 | parse_warn (cfile, |
4230 | "unsupported integer size %d", atoi (val)); | |
be6be08d TL |
4231 | *lose = 1; |
4232 | skip_to_semi (cfile); | |
4bd8800e | 4233 | expression_dereference (expr, MDL); |
02a015fb | 4234 | return 0; |
be6be08d TL |
4235 | } |
4236 | ||
b3519f23 | 4237 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4238 | if (token != RPAREN) { |
4615d498 | 4239 | parse_warn (cfile, "right parenthesis expected."); |
be6be08d | 4240 | *lose = 1; |
4bd8800e | 4241 | expression_dereference (expr, MDL); |
02a015fb | 4242 | return 0; |
be6be08d | 4243 | } |
02a015fb | 4244 | break; |
be6be08d | 4245 | |
20c4e94d | 4246 | case ENCODE_INT: |
b3519f23 TL |
4247 | token = next_token (&val, (unsigned *)0, cfile); |
4248 | token = next_token (&val, (unsigned *)0, cfile); | |
20c4e94d | 4249 | if (token != LPAREN) { |
4615d498 | 4250 | parse_warn (cfile, "left parenthesis expected."); |
20c4e94d TL |
4251 | *lose = 1; |
4252 | return 0; | |
4253 | } | |
4254 | ||
4bd8800e | 4255 | if (!expression_allocate (expr, MDL)) |
20c4e94d TL |
4256 | log_fatal ("can't allocate expression"); |
4257 | ||
4258 | if (!parse_numeric_expression (&(*expr) -> data.encode_int, | |
4259 | cfile, lose)) { | |
4615d498 | 4260 | parse_warn (cfile, "expecting numeric expression."); |
20c4e94d TL |
4261 | skip_to_semi (cfile); |
4262 | *lose = 1; | |
4bd8800e | 4263 | expression_dereference (expr, MDL); |
20c4e94d TL |
4264 | return 0; |
4265 | } | |
4266 | ||
b3519f23 | 4267 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4268 | if (token != COMMA) { |
4615d498 | 4269 | parse_warn (cfile, "comma expected."); |
20c4e94d | 4270 | *lose = 1; |
4bd8800e | 4271 | expression_dereference (expr, MDL); |
20c4e94d TL |
4272 | return 0; |
4273 | } | |
4274 | ||
b3519f23 | 4275 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4276 | if (token != NUMBER) { |
4615d498 | 4277 | parse_warn (cfile, "number expected."); |
20c4e94d | 4278 | *lose = 1; |
4bd8800e | 4279 | expression_dereference (expr, MDL); |
20c4e94d TL |
4280 | return 0; |
4281 | } | |
4282 | switch (atoi (val)) { | |
4283 | case 8: | |
4284 | (*expr) -> op = expr_encode_int8; | |
4285 | break; | |
4286 | ||
4287 | case 16: | |
4288 | (*expr) -> op = expr_encode_int16; | |
4289 | break; | |
4290 | ||
4291 | case 32: | |
4292 | (*expr) -> op = expr_encode_int32; | |
4293 | break; | |
4294 | ||
4295 | default: | |
4615d498 TL |
4296 | parse_warn (cfile, |
4297 | "unsupported integer size %d", atoi (val)); | |
20c4e94d TL |
4298 | *lose = 1; |
4299 | skip_to_semi (cfile); | |
4bd8800e | 4300 | expression_dereference (expr, MDL); |
20c4e94d TL |
4301 | return 0; |
4302 | } | |
4303 | ||
b3519f23 | 4304 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4305 | if (token != RPAREN) { |
4615d498 | 4306 | parse_warn (cfile, "right parenthesis expected."); |
20c4e94d | 4307 | *lose = 1; |
4bd8800e | 4308 | expression_dereference (expr, MDL); |
20c4e94d TL |
4309 | return 0; |
4310 | } | |
4311 | break; | |
4312 | ||
be6be08d | 4313 | case NUMBER: |
02a015fb TL |
4314 | /* If we're in a numeric context, this should just be a |
4315 | number, by itself. */ | |
f579f39f TL |
4316 | if (context == context_numeric || |
4317 | context == context_data_or_numeric) { | |
b3519f23 | 4318 | next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4319 | if (!expression_allocate (expr, MDL)) |
be19167d | 4320 | log_fatal ("can't allocate expression"); |
02a015fb TL |
4321 | (*expr) -> op = expr_const_int; |
4322 | (*expr) -> data.const_int = atoi (val); | |
4323 | break; | |
4324 | } | |
be6be08d | 4325 | |
02a015fb | 4326 | case NUMBER_OR_NAME: |
4bd8800e | 4327 | if (!expression_allocate (expr, MDL)) |
be19167d TL |
4328 | log_fatal ("can't allocate expression"); |
4329 | ||
02a015fb TL |
4330 | (*expr) -> op = expr_const_data; |
4331 | if (!parse_cshl (&(*expr) -> data.const_data, cfile)) { | |
4bd8800e | 4332 | expression_dereference (expr, MDL); |
02a015fb TL |
4333 | return 0; |
4334 | } | |
4335 | break; | |
4336 | ||
f579f39f TL |
4337 | case NS_FORMERR: |
4338 | known = FORMERR; | |
9a7f6fcd | 4339 | goto ns_const; |
f579f39f | 4340 | ns_const: |
b3519f23 | 4341 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4342 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4343 | log_fatal ("can't allocate expression"); |
4344 | (*expr) -> op = expr_const_int; | |
4345 | (*expr) -> data.const_int = known; | |
4346 | break; | |
4347 | ||
4348 | case NS_NOERROR: | |
1898dcf7 | 4349 | known = ISC_R_SUCCESS; |
f579f39f TL |
4350 | goto ns_const; |
4351 | ||
4352 | case NS_NOTAUTH: | |
1898dcf7 | 4353 | known = ISC_R_NOTAUTH; |
f579f39f TL |
4354 | goto ns_const; |
4355 | ||
4356 | case NS_NOTIMP: | |
1898dcf7 | 4357 | known = ISC_R_NOTIMPLEMENTED; |
f579f39f TL |
4358 | goto ns_const; |
4359 | ||
4360 | case NS_NOTZONE: | |
1898dcf7 | 4361 | known = ISC_R_NOTZONE; |
f579f39f TL |
4362 | goto ns_const; |
4363 | ||
4364 | case NS_NXDOMAIN: | |
1898dcf7 | 4365 | known = ISC_R_NXDOMAIN; |
f579f39f TL |
4366 | goto ns_const; |
4367 | ||
4368 | case NS_NXRRSET: | |
1898dcf7 | 4369 | known = ISC_R_NXRRSET; |
f579f39f TL |
4370 | goto ns_const; |
4371 | ||
4372 | case NS_REFUSED: | |
1898dcf7 | 4373 | known = ISC_R_REFUSED; |
f579f39f TL |
4374 | goto ns_const; |
4375 | ||
4376 | case NS_SERVFAIL: | |
1898dcf7 | 4377 | known = ISC_R_SERVFAIL; |
f579f39f TL |
4378 | goto ns_const; |
4379 | ||
4380 | case NS_YXDOMAIN: | |
1898dcf7 | 4381 | known = ISC_R_YXDOMAIN; |
f579f39f TL |
4382 | goto ns_const; |
4383 | ||
4384 | case NS_YXRRSET: | |
1898dcf7 | 4385 | known = ISC_R_YXRRSET; |
f579f39f TL |
4386 | goto ns_const; |
4387 | ||
8a34e9e6 TL |
4388 | case BOOTING: |
4389 | known = S_INIT; | |
4390 | goto ns_const; | |
4391 | ||
4392 | case REBOOT: | |
4393 | known = S_REBOOTING; | |
4394 | goto ns_const; | |
4395 | ||
4396 | case SELECT: | |
4397 | known = S_SELECTING; | |
4398 | goto ns_const; | |
4399 | ||
543ce4f8 TL |
4400 | case REQUEST: |
4401 | known = S_REQUESTING; | |
4402 | goto ns_const; | |
4403 | ||
8a34e9e6 TL |
4404 | case BOUND: |
4405 | known = S_BOUND; | |
4406 | goto ns_const; | |
4407 | ||
4408 | case RENEW: | |
4409 | known = S_RENEWING; | |
4410 | goto ns_const; | |
4411 | ||
4412 | case REBIND: | |
4413 | known = S_REBINDING; | |
4414 | goto ns_const; | |
4415 | ||
f579f39f | 4416 | case DEFINED: |
b3519f23 TL |
4417 | token = next_token (&val, (unsigned *)0, cfile); |
4418 | token = next_token (&val, (unsigned *)0, cfile); | |
f579f39f TL |
4419 | if (token != LPAREN) |
4420 | goto nolparen; | |
4421 | ||
b3519f23 | 4422 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4423 | if (token != NAME && token != NUMBER_OR_NAME) { |
4424 | parse_warn (cfile, "%s can't be a variable name", val); | |
4425 | skip_to_semi (cfile); | |
4426 | *lose = 1; | |
4427 | return 0; | |
4428 | } | |
4429 | ||
4bd8800e | 4430 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4431 | log_fatal ("can't allocate expression"); |
4432 | (*expr) -> op = expr_variable_exists; | |
fdac15d9 | 4433 | (*expr) -> data.variable = dmalloc (strlen (val) + 1, MDL); |
f579f39f TL |
4434 | if (!(*expr)->data.variable) |
4435 | log_fatal ("can't allocate variable name"); | |
4436 | strcpy ((*expr) -> data.variable, val); | |
b3519f23 | 4437 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4438 | if (token != RPAREN) |
4439 | goto norparen; | |
4440 | break; | |
4441 | ||
02a015fb | 4442 | /* Not a valid start to an expression... */ |
be6be08d | 4443 | default: |
f579f39f TL |
4444 | if (token != NAME && token != NUMBER_OR_NAME) |
4445 | return 0; | |
4446 | ||
b3519f23 | 4447 | token = next_token (&val, (unsigned *)0, cfile); |
08514fb8 TL |
4448 | |
4449 | /* Save the name of the variable being referenced. */ | |
4450 | cptr = dmalloc (strlen (val) + 1, MDL); | |
4451 | if (!cptr) | |
4452 | log_fatal ("can't allocate variable name"); | |
4453 | strcpy (cptr, val); | |
4454 | ||
4455 | /* Simple variable reference, as far as we can tell. */ | |
b3519f23 | 4456 | token = peek_token (&val, (unsigned *)0, cfile); |
08514fb8 TL |
4457 | if (token != LPAREN) { |
4458 | if (!expression_allocate (expr, MDL)) | |
4459 | log_fatal ("can't allocate expression"); | |
4460 | (*expr) -> op = expr_variable_reference; | |
4461 | (*expr) -> data.variable = cptr; | |
4462 | break; | |
4463 | } | |
4464 | ||
b3519f23 | 4465 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4466 | if (!expression_allocate (expr, MDL)) |
f579f39f | 4467 | log_fatal ("can't allocate expression"); |
08514fb8 TL |
4468 | (*expr) -> op = expr_funcall; |
4469 | (*expr) -> data.funcall.name = cptr; | |
4470 | ||
4471 | /* Now parse the argument list. */ | |
4472 | ep = &(*expr) -> data.funcall.arglist; | |
4473 | do { | |
4474 | if (!expression_allocate (ep, MDL)) | |
4475 | log_fatal ("can't allocate expression"); | |
4476 | (*ep) -> op = expr_arg; | |
4477 | if (!parse_expression (&(*ep) -> data.arg.val, | |
4478 | cfile, lose, context_any, | |
4479 | (struct expression **)0, | |
4480 | expr_none)) { | |
4481 | if (!*lose) { | |
4482 | parse_warn (cfile, | |
4483 | "expecting expression."); | |
4484 | *lose = 1; | |
4485 | } | |
4486 | skip_to_semi (cfile); | |
4487 | expression_dereference (expr, MDL); | |
4488 | return 0; | |
4489 | } | |
4490 | ep = &((*ep) -> data.arg.next); | |
b3519f23 | 4491 | token = next_token (&val, (unsigned *)0, cfile); |
08514fb8 TL |
4492 | } while (token == COMMA); |
4493 | if (token != RPAREN) { | |
4494 | parse_warn (cfile, "Right parenthesis expected."); | |
4495 | skip_to_semi (cfile); | |
4496 | *lose = 1; | |
4497 | expression_dereference (expr, MDL); | |
4498 | return 0; | |
4499 | } | |
f579f39f | 4500 | break; |
be6be08d | 4501 | } |
02a015fb | 4502 | return 1; |
be6be08d TL |
4503 | } |
4504 | ||
02a015fb TL |
4505 | /* Parse an expression. */ |
4506 | ||
4507 | int parse_expression (expr, cfile, lose, context, plhs, binop) | |
4508 | struct expression **expr; | |
4615d498 | 4509 | struct parse *cfile; |
02a015fb TL |
4510 | int *lose; |
4511 | enum expression_context context; | |
4512 | struct expression **plhs; | |
4513 | enum expr_op binop; | |
4514 | { | |
4515 | enum dhcp_token token; | |
b1b7b521 | 4516 | const char *val; |
02a015fb | 4517 | struct expression *rhs = (struct expression *)0, *tmp; |
962dc4ab | 4518 | struct expression *lhs = (struct expression *)0; |
02a015fb | 4519 | enum expr_op next_op; |
1898dcf7 TL |
4520 | enum expression_context |
4521 | lhs_context = context_any, | |
4522 | rhs_context = context_any; | |
02a015fb TL |
4523 | |
4524 | /* Consume the left hand side we were passed. */ | |
4525 | if (plhs) { | |
962dc4ab TL |
4526 | expression_reference (&lhs, *plhs, MDL); |
4527 | expression_dereference (plhs, MDL); | |
4528 | } | |
02a015fb TL |
4529 | |
4530 | new_rhs: | |
4531 | if (!parse_non_binary (&rhs, cfile, lose, context)) { | |
4532 | /* If we already have a left-hand side, then it's not | |
4533 | okay for there not to be a right-hand side here, so | |
4534 | we need to flag it as an error. */ | |
4535 | if (lhs) { | |
4536 | if (!*lose) { | |
4615d498 TL |
4537 | parse_warn (cfile, |
4538 | "expecting right-hand side."); | |
02a015fb TL |
4539 | *lose = 1; |
4540 | skip_to_semi (cfile); | |
4541 | } | |
4bd8800e | 4542 | expression_dereference (&lhs, MDL); |
02a015fb TL |
4543 | } |
4544 | return 0; | |
4545 | } | |
4546 | ||
4547 | /* At this point, rhs contains either an entire subexpression, | |
4548 | or at least a left-hand-side. If we do not see a binary token | |
4549 | as the next token, we're done with the expression. */ | |
4550 | ||
b3519f23 | 4551 | token = peek_token (&val, (unsigned *)0, cfile); |
02a015fb | 4552 | switch (token) { |
2b965a44 | 4553 | case BANG: |
b3519f23 TL |
4554 | token = next_token (&val, (unsigned *)0, cfile); |
4555 | token = peek_token (&val, (unsigned *)0, cfile); | |
2b965a44 TL |
4556 | if (token != EQUAL) { |
4557 | parse_warn (cfile, "! in boolean context without ="); | |
4558 | *lose = 1; | |
4559 | skip_to_semi (cfile); | |
4560 | if (lhs) | |
4bd8800e | 4561 | expression_dereference (&lhs, MDL); |
2b965a44 TL |
4562 | return 0; |
4563 | } | |
4564 | next_op = expr_not_equal; | |
1898dcf7 | 4565 | context = expression_context (rhs); |
2b965a44 TL |
4566 | break; |
4567 | ||
02a015fb TL |
4568 | case EQUAL: |
4569 | next_op = expr_equal; | |
1898dcf7 | 4570 | context = expression_context (rhs); |
02a015fb TL |
4571 | break; |
4572 | ||
dd328225 DH |
4573 | case TILDE: |
4574 | #ifdef HAVE_REGEX_H | |
4575 | token = next_token(&val, NULL, cfile); | |
4576 | token = peek_token(&val, NULL, cfile); | |
4577 | ||
4578 | if (token == TILDE) | |
4579 | next_op = expr_iregex_match; | |
4580 | else if (token == EQUAL) | |
4581 | next_op = expr_regex_match; | |
4582 | else { | |
4583 | parse_warn(cfile, "expecting ~= or ~~ operator"); | |
4584 | *lose = 1; | |
4585 | skip_to_semi(cfile); | |
4586 | if (lhs) | |
4587 | expression_dereference(&lhs, MDL); | |
4588 | return 0; | |
4589 | } | |
4590 | ||
4591 | context = expression_context(rhs); | |
4592 | #else | |
4593 | parse_warn(cfile, "No support for regex operator."); | |
4594 | *lose = 1; | |
4595 | skip_to_semi(cfile); | |
4596 | if (lhs != NULL) | |
4597 | expression_dereference(&lhs, MDL); | |
4598 | return 0; | |
4599 | #endif | |
4600 | break; | |
4601 | ||
02a015fb TL |
4602 | case AND: |
4603 | next_op = expr_and; | |
1898dcf7 | 4604 | context = expression_context (rhs); |
02a015fb TL |
4605 | break; |
4606 | ||
4607 | case OR: | |
4608 | next_op = expr_or; | |
1898dcf7 | 4609 | context = expression_context (rhs); |
02a015fb TL |
4610 | break; |
4611 | ||
31cb2a5f TL |
4612 | case PLUS: |
4613 | next_op = expr_add; | |
1898dcf7 | 4614 | context = expression_context (rhs); |
31cb2a5f TL |
4615 | break; |
4616 | ||
4617 | case MINUS: | |
4618 | next_op = expr_subtract; | |
1898dcf7 | 4619 | context = expression_context (rhs); |
31cb2a5f TL |
4620 | break; |
4621 | ||
4622 | case SLASH: | |
4623 | next_op = expr_divide; | |
1898dcf7 | 4624 | context = expression_context (rhs); |
31cb2a5f TL |
4625 | break; |
4626 | ||
4627 | case ASTERISK: | |
4628 | next_op = expr_multiply; | |
1898dcf7 | 4629 | context = expression_context (rhs); |
31cb2a5f TL |
4630 | break; |
4631 | ||
4632 | case PERCENT: | |
4633 | next_op = expr_remainder; | |
1898dcf7 | 4634 | context = expression_context (rhs); |
31cb2a5f TL |
4635 | break; |
4636 | ||
3c98e80b DN |
4637 | case AMPERSAND: |
4638 | next_op = expr_binary_and; | |
1898dcf7 | 4639 | context = expression_context (rhs); |
3c98e80b DN |
4640 | break; |
4641 | ||
4642 | case PIPE: | |
4643 | next_op = expr_binary_or; | |
1898dcf7 | 4644 | context = expression_context (rhs); |
3c98e80b DN |
4645 | break; |
4646 | ||
4647 | case CARET: | |
4648 | next_op = expr_binary_xor; | |
1898dcf7 | 4649 | context = expression_context (rhs); |
3c98e80b DN |
4650 | break; |
4651 | ||
02a015fb TL |
4652 | default: |
4653 | next_op = expr_none; | |
4654 | } | |
4655 | ||
4656 | /* If we have no lhs yet, we just parsed it. */ | |
4657 | if (!lhs) { | |
4658 | /* If there was no operator following what we just parsed, | |
4659 | then we're done - return it. */ | |
4660 | if (next_op == expr_none) { | |
4661 | *expr = rhs; | |
4662 | return 1; | |
4663 | } | |
4664 | lhs = rhs; | |
4665 | rhs = (struct expression *)0; | |
4666 | binop = next_op; | |
b3519f23 | 4667 | next_token (&val, (unsigned *)0, cfile); |
02a015fb TL |
4668 | goto new_rhs; |
4669 | } | |
4670 | ||
98311e4b DH |
4671 | /* If the next binary operator is of greater precedence than the |
4672 | * current operator, then rhs we have parsed so far is actually | |
4673 | * the lhs of the next operator. To get this value, we have to | |
4674 | * recurse. | |
4675 | */ | |
4676 | if (binop != expr_none && next_op != expr_none && | |
4677 | op_precedence (binop, next_op) < 0) { | |
4678 | ||
4679 | /* Eat the subexpression operator token, which we pass to | |
4680 | * parse_expression...we only peek()'d earlier. | |
4681 | */ | |
4682 | token = next_token (&val, (unsigned *)0, cfile); | |
4683 | ||
4684 | /* Continue parsing of the right hand side with that token. */ | |
4685 | tmp = rhs; | |
4686 | rhs = (struct expression *)0; | |
4687 | if (!parse_expression (&rhs, cfile, lose, op_context (next_op), | |
4688 | &tmp, next_op)) { | |
4689 | if (!*lose) { | |
4690 | parse_warn (cfile, | |
4691 | "expecting a subexpression"); | |
4692 | *lose = 1; | |
4693 | } | |
4694 | return 0; | |
4695 | } | |
4696 | next_op = expr_none; | |
4697 | } | |
4698 | ||
4699 | if (binop != expr_none) { | |
4700 | rhs_context = expression_context(rhs); | |
4701 | lhs_context = expression_context(lhs); | |
4702 | ||
4703 | if ((rhs_context != context_any) && (lhs_context != context_any) && | |
4704 | (rhs_context != lhs_context)) { | |
4705 | parse_warn (cfile, "illegal expression relating different types"); | |
4706 | skip_to_semi (cfile); | |
4707 | expression_dereference (&rhs, MDL); | |
4708 | expression_dereference (&lhs, MDL); | |
4709 | *lose = 1; | |
4710 | return 0; | |
4711 | } | |
4712 | ||
4713 | switch(binop) { | |
4714 | case expr_not_equal: | |
4715 | case expr_equal: | |
4716 | if ((rhs_context != context_data_or_numeric) && | |
4717 | (rhs_context != context_data) && | |
4718 | (rhs_context != context_numeric) && | |
4719 | (rhs_context != context_any)) { | |
4720 | parse_warn (cfile, "expecting data/numeric expression"); | |
4721 | skip_to_semi (cfile); | |
4722 | expression_dereference (&rhs, MDL); | |
4723 | *lose = 1; | |
4724 | return 0; | |
4725 | } | |
4726 | break; | |
4727 | ||
dd328225 DH |
4728 | case expr_regex_match: |
4729 | #ifdef HAVE_REGEX_H | |
4730 | if (expression_context(rhs) != context_data) { | |
4731 | parse_warn(cfile, "expecting data expression"); | |
4732 | skip_to_semi(cfile); | |
4733 | expression_dereference(&rhs, MDL); | |
4734 | *lose = 1; | |
4735 | return 0; | |
4736 | } | |
4737 | #else | |
4738 | /* It should not be possible to attempt to parse the right | |
4739 | * hand side of an operator there is no support for. | |
4740 | */ | |
4741 | log_fatal("Impossible condition at %s:%d.", MDL); | |
4742 | #endif | |
4743 | break; | |
4744 | ||
98311e4b DH |
4745 | case expr_and: |
4746 | case expr_or: | |
4747 | if ((rhs_context != context_boolean) && | |
4748 | (rhs_context != context_any)) { | |
4749 | parse_warn (cfile, "expecting boolean expressions"); | |
4750 | skip_to_semi (cfile); | |
4751 | expression_dereference (&rhs, MDL); | |
4752 | *lose = 1; | |
4753 | return 0; | |
4754 | } | |
4755 | break; | |
4756 | ||
4757 | case expr_add: | |
4758 | case expr_subtract: | |
4759 | case expr_divide: | |
4760 | case expr_multiply: | |
4761 | case expr_remainder: | |
4762 | case expr_binary_and: | |
4763 | case expr_binary_or: | |
4764 | case expr_binary_xor: | |
4765 | if ((rhs_context != context_numeric) && | |
4766 | (rhs_context != context_any)) { | |
4767 | parse_warn (cfile, "expecting numeric expressions"); | |
4768 | skip_to_semi (cfile); | |
4769 | expression_dereference (&rhs, MDL); | |
4770 | *lose = 1; | |
4771 | return 0; | |
4772 | } | |
4773 | break; | |
4774 | ||
4775 | default: | |
4776 | break; | |
4777 | } | |
4778 | } | |
4779 | ||
02a015fb TL |
4780 | /* Now, if we didn't find a binary operator, we're done parsing |
4781 | this subexpression, so combine it with the preceding binary | |
4782 | operator and return the result. */ | |
4783 | if (next_op == expr_none) { | |
4bd8800e | 4784 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4785 | log_fatal ("Can't allocate expression!"); |
02a015fb TL |
4786 | |
4787 | (*expr) -> op = binop; | |
4788 | /* All the binary operators' data union members | |
4789 | are the same, so we'll cheat and use the member | |
4790 | for the equals operator. */ | |
4791 | (*expr) -> data.equal [0] = lhs; | |
4792 | (*expr) -> data.equal [1] = rhs; | |
4793 | return 1; | |
4794 | } | |
4795 | ||
4796 | /* Eat the operator token - we now know it was a binary operator... */ | |
b3519f23 | 4797 | token = next_token (&val, (unsigned *)0, cfile); |
02a015fb | 4798 | |
02a015fb TL |
4799 | /* Now combine the LHS and the RHS using binop. */ |
4800 | tmp = (struct expression *)0; | |
4bd8800e | 4801 | if (!expression_allocate (&tmp, MDL)) |
8ae2d595 | 4802 | log_fatal ("No memory for equal precedence combination."); |
02a015fb TL |
4803 | |
4804 | /* Store the LHS and RHS. */ | |
4805 | tmp -> data.equal [0] = lhs; | |
4806 | tmp -> data.equal [1] = rhs; | |
4807 | tmp -> op = binop; | |
4808 | ||
4809 | lhs = tmp; | |
4810 | tmp = (struct expression *)0; | |
4811 | rhs = (struct expression *)0; | |
4812 | ||
4813 | /* Recursions don't return until we have parsed the end of the | |
4814 | expression, so if we recursed earlier, we can now return what | |
4815 | we got. */ | |
4816 | if (next_op == expr_none) { | |
4817 | *expr = lhs; | |
4818 | return 1; | |
4819 | } | |
4820 | ||
4821 | binop = next_op; | |
4822 | goto new_rhs; | |
4823 | } | |
4824 | ||
be6be08d | 4825 | |
b55d0d5f EH |
4826 | int parse_option_data (expr, cfile, lookups, option) |
4827 | struct expression **expr; | |
4828 | struct parse *cfile; | |
4829 | int lookups; | |
4830 | struct option *option; | |
be6be08d | 4831 | { |
b1b7b521 | 4832 | const char *val; |
d8fc5060 | 4833 | const char *fmt = NULL; |
02a015fb | 4834 | struct expression *tmp; |
b55d0d5f | 4835 | enum dhcp_token token; |
a82abfc7 | 4836 | |
be6be08d | 4837 | do { |
b55d0d5f EH |
4838 | /* |
4839 | * Set a flag if this is an array of a simple type (i.e., | |
4840 | * not an array of pairs of IP addresses, or something like | |
4841 | * that. | |
4842 | */ | |
be6be08d TL |
4843 | int uniform = option -> format [1] == 'A'; |
4844 | ||
d8fc5060 TL |
4845 | and_again: |
4846 | /* Set fmt to start of format for 'A' and one char back | |
d5341d9b SK |
4847 | * for 'a'. |
4848 | */ | |
4849 | if ((fmt != NULL) && (fmt != option->format) && (*fmt == 'a')) | |
d8fc5060 | 4850 | fmt -= 1; |
d5341d9b SK |
4851 | else if ((fmt == NULL) || (*fmt == 'A')) |
4852 | fmt = option->format; | |
d8fc5060 TL |
4853 | |
4854 | /* 'a' means always uniform */ | |
4855 | uniform |= (fmt [1] == 'a'); | |
4856 | ||
4857 | for ( ; *fmt; fmt++) { | |
4858 | if ((*fmt == 'A') || (*fmt == 'a')) | |
be6be08d | 4859 | break; |
d8fc5060 TL |
4860 | if (*fmt == 'o') |
4861 | continue; | |
b55d0d5f EH |
4862 | |
4863 | tmp = *expr; | |
4864 | *expr = NULL; | |
4865 | if (!parse_option_token(expr, cfile, &fmt, tmp, | |
4866 | uniform, lookups)) { | |
d8fc5060 TL |
4867 | if (fmt [1] != 'o') { |
4868 | if (tmp) | |
4869 | expression_dereference (&tmp, | |
4870 | MDL); | |
4871 | return 0; | |
4872 | } | |
b55d0d5f EH |
4873 | *expr = tmp; |
4874 | tmp = NULL; | |
02a015fb | 4875 | } |
b55d0d5f | 4876 | if (tmp) |
4bd8800e | 4877 | expression_dereference (&tmp, MDL); |
be6be08d | 4878 | } |
d8fc5060 | 4879 | if ((*fmt == 'A') || (*fmt == 'a')) { |
b3519f23 | 4880 | token = peek_token (&val, (unsigned *)0, cfile); |
d8fc5060 | 4881 | /* Comma means: continue with next element in array */ |
be6be08d | 4882 | if (token == COMMA) { |
b3519f23 TL |
4883 | token = next_token (&val, |
4884 | (unsigned *)0, cfile); | |
be6be08d TL |
4885 | continue; |
4886 | } | |
d8fc5060 TL |
4887 | /* no comma: end of array. |
4888 | 'A' or end of string means: leave the loop */ | |
4889 | if ((*fmt == 'A') || (fmt[1] == '\0')) | |
4890 | break; | |
4891 | /* 'a' means: go on with next char */ | |
4892 | if (*fmt == 'a') { | |
4893 | fmt++; | |
4894 | goto and_again; | |
4895 | } | |
be6be08d | 4896 | } |
d8fc5060 | 4897 | } while ((*fmt == 'A') || (*fmt == 'a')); |
be6be08d | 4898 | |
b55d0d5f EH |
4899 | return 1; |
4900 | } | |
4901 | ||
4902 | /* option-statement :== identifier DOT identifier <syntax> SEMI | |
4903 | | identifier <syntax> SEMI | |
4904 | ||
4905 | Option syntax is handled specially through format strings, so it | |
4906 | would be painful to come up with BNF for it. However, it always | |
4907 | starts as above and ends in a SEMI. */ | |
4908 | ||
4909 | int parse_option_statement (result, cfile, lookups, option, op) | |
4910 | struct executable_statement **result; | |
4911 | struct parse *cfile; | |
4912 | int lookups; | |
4913 | struct option *option; | |
4914 | enum statement_op op; | |
4915 | { | |
4916 | const char *val; | |
4917 | enum dhcp_token token; | |
4918 | struct expression *expr = (struct expression *)0; | |
4919 | int lose; | |
4920 | int ftt = 1; | |
4921 | ||
4922 | token = peek_token (&val, (unsigned *)0, cfile); | |
4923 | if (token == SEMI) { | |
4924 | /* Eat the semicolon... */ | |
4925 | token = next_token (&val, (unsigned *)0, cfile); | |
4926 | goto done; | |
4927 | } | |
4928 | ||
4929 | if (token == EQUAL) { | |
4930 | /* Eat the equals sign. */ | |
4931 | token = next_token (&val, (unsigned *)0, cfile); | |
4932 | ||
4933 | /* Parse a data expression and use its value for the data. */ | |
4934 | if (!parse_data_expression (&expr, cfile, &lose)) { | |
4935 | /* In this context, we must have an executable | |
4936 | statement, so if we found something else, it's | |
4937 | still an error. */ | |
4938 | if (!lose) { | |
4939 | parse_warn (cfile, | |
4940 | "expecting a data expression."); | |
4941 | skip_to_semi (cfile); | |
4942 | } | |
4943 | return 0; | |
4944 | } | |
4945 | ||
4946 | /* We got a valid expression, so use it. */ | |
4947 | goto done; | |
4948 | } | |
4949 | ||
4950 | /* Parse the option data... */ | |
4951 | if (! parse_option_data(&expr, cfile, lookups, option)) | |
4952 | return 0; | |
4953 | ||
be6be08d | 4954 | done: |
25541f2f | 4955 | if (!parse_semi (cfile)) |
79a65726 | 4956 | return 0; |
4bd8800e | 4957 | if (!executable_statement_allocate (result, MDL)) |
79a65726 | 4958 | log_fatal ("no memory for option statement."); |
b55d0d5f EH |
4959 | |
4960 | (*result)->op = op; | |
4961 | if (expr && !option_cache (&(*result)->data.option, | |
4962 | NULL, expr, option, MDL)) | |
52c9d530 | 4963 | log_fatal ("no memory for option cache"); |
b55d0d5f | 4964 | |
d758ad8c TL |
4965 | if (expr) |
4966 | expression_dereference (&expr, MDL); | |
b55d0d5f | 4967 | |
79a65726 | 4968 | return 1; |
be6be08d TL |
4969 | } |
4970 | ||
02a015fb TL |
4971 | int parse_option_token (rv, cfile, fmt, expr, uniform, lookups) |
4972 | struct expression **rv; | |
4615d498 | 4973 | struct parse *cfile; |
63a0ff88 | 4974 | const char **fmt; |
be6be08d TL |
4975 | struct expression *expr; |
4976 | int uniform; | |
4977 | int lookups; | |
4978 | { | |
b1b7b521 | 4979 | const char *val; |
02a015fb TL |
4980 | enum dhcp_token token; |
4981 | struct expression *t = (struct expression *)0; | |
be6be08d | 4982 | unsigned char buf [4]; |
b3519f23 | 4983 | unsigned len; |
be6be08d TL |
4984 | unsigned char *ob; |
4985 | struct iaddr addr; | |
98bd7ca0 | 4986 | int num, compress; |
b49c02cc | 4987 | const char *f, *g; |
42c6a803 | 4988 | struct enumeration_value *e; |
be6be08d | 4989 | |
63a0ff88 | 4990 | switch (**fmt) { |
52c9d530 | 4991 | case 'U': |
98311e4b | 4992 | token = next_token (&val, &len, cfile); |
52c9d530 | 4993 | if (!is_identifier (token)) { |
63a0ff88 | 4994 | if ((*fmt) [1] != 'o') { |
d8fc5060 | 4995 | parse_warn (cfile, "expecting identifier."); |
98311e4b DH |
4996 | if (token != SEMI) |
4997 | skip_to_semi (cfile); | |
d8fc5060 | 4998 | } |
52c9d530 TL |
4999 | return 0; |
5000 | } | |
b1b7b521 | 5001 | if (!make_const_data (&t, (const unsigned char *)val, |
d758ad8c | 5002 | len, 1, 1, MDL)) |
52c9d530 TL |
5003 | log_fatal ("No memory for %s", val); |
5004 | break; | |
5005 | ||
962dc4ab | 5006 | case 'E': |
b49c02cc TL |
5007 | g = strchr (*fmt, '.'); |
5008 | if (!g) { | |
962dc4ab TL |
5009 | parse_warn (cfile, |
5010 | "malformed encapsulation format (bug!)"); | |
5011 | skip_to_semi (cfile); | |
5012 | return 0; | |
5013 | } | |
b49c02cc | 5014 | *fmt = g; |
be6be08d | 5015 | case 'X': |
b3519f23 | 5016 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d | 5017 | if (token == NUMBER_OR_NAME || token == NUMBER) { |
4bd8800e | 5018 | if (!expression_allocate (&t, MDL)) |
02a015fb | 5019 | return 0; |
8cc4d857 | 5020 | if (!parse_cshl (&t -> data.const_data, cfile)) { |
4bd8800e | 5021 | expression_dereference (&t, MDL); |
01e20b9e | 5022 | return 0; |
8cc4d857 | 5023 | } |
efc79acb | 5024 | t -> op = expr_const_data; |
be6be08d | 5025 | } else { |
98311e4b DH |
5026 | token = next_token (&val, &len, cfile); |
5027 | ||
5028 | if(token == STRING) { | |
5029 | if (!make_const_data (&t, | |
5030 | (const unsigned char *)val, | |
5031 | len, 1, 1, MDL)) | |
5032 | log_fatal ("No memory for \"%s\"", val); | |
98311e4b | 5033 | } else { |
b55d0d5f EH |
5034 | if ((*fmt) [1] != 'o') { |
5035 | parse_warn (cfile, "expecting string " | |
5036 | "or hexadecimal data."); | |
5037 | skip_to_semi (cfile); | |
5038 | } | |
98311e4b | 5039 | return 0; |
d8fc5060 | 5040 | } |
be6be08d TL |
5041 | } |
5042 | break; | |
dba5803b DH |
5043 | |
5044 | case 'D': /* Domain list... */ | |
98bd7ca0 DH |
5045 | if ((*fmt)[1] == 'c') { |
5046 | compress = 1; | |
5047 | /* Skip the compress-flag atom. */ | |
5048 | (*fmt)++; | |
5049 | } else | |
5050 | compress = 0; | |
5051 | ||
5052 | t = parse_domain_list(cfile, compress); | |
dba5803b DH |
5053 | |
5054 | if (!t) { | |
5055 | if ((*fmt)[1] != 'o') | |
5056 | skip_to_semi(cfile); | |
5057 | return 0; | |
5058 | } | |
5059 | ||
5060 | break; | |
5061 | ||
d758ad8c TL |
5062 | case 'd': /* Domain name... */ |
5063 | val = parse_host_name (cfile); | |
5064 | if (!val) { | |
5065 | parse_warn (cfile, "not a valid domain name."); | |
5066 | skip_to_semi (cfile); | |
5067 | return 0; | |
5068 | } | |
5069 | len = strlen (val); | |
5070 | goto make_string; | |
5071 | ||
be6be08d | 5072 | case 't': /* Text string... */ |
98311e4b | 5073 | token = next_token (&val, &len, cfile); |
be6be08d | 5074 | if (token != STRING && !is_identifier (token)) { |
63a0ff88 | 5075 | if ((*fmt) [1] != 'o') { |
d8fc5060 TL |
5076 | parse_warn (cfile, "expecting string."); |
5077 | if (token != SEMI) | |
5078 | skip_to_semi (cfile); | |
5079 | } | |
02a015fb | 5080 | return 0; |
be6be08d | 5081 | } |
d758ad8c | 5082 | make_string: |
b1b7b521 | 5083 | if (!make_const_data (&t, (const unsigned char *)val, |
d758ad8c | 5084 | len, 1, 1, MDL)) |
8ae2d595 | 5085 | log_fatal ("No memory for concatenation"); |
be6be08d TL |
5086 | break; |
5087 | ||
42c6a803 | 5088 | case 'N': |
63a0ff88 | 5089 | f = (*fmt) + 1; |
b49c02cc TL |
5090 | g = strchr (*fmt, '.'); |
5091 | if (!g) { | |
42c6a803 TL |
5092 | parse_warn (cfile, "malformed %s (bug!)", |
5093 | "enumeration format"); | |
5094 | foo: | |
5095 | skip_to_semi (cfile); | |
5096 | return 0; | |
5097 | } | |
b49c02cc | 5098 | *fmt = g; |
b3519f23 | 5099 | token = next_token (&val, (unsigned *)0, cfile); |
42c6a803 TL |
5100 | if (!is_identifier (token)) { |
5101 | parse_warn (cfile, | |
5102 | "identifier expected"); | |
5103 | goto foo; | |
5104 | } | |
63a0ff88 | 5105 | e = find_enumeration_value (f, (*fmt) - f, val); |
42c6a803 TL |
5106 | if (!e) { |
5107 | parse_warn (cfile, "unknown value"); | |
5108 | goto foo; | |
5109 | } | |
d758ad8c | 5110 | if (!make_const_data (&t, &e -> value, 1, 0, 1, MDL)) |
42c6a803 TL |
5111 | return 0; |
5112 | break; | |
5113 | ||
be6be08d | 5114 | case 'I': /* IP address or hostname. */ |
02a015fb TL |
5115 | if (lookups) { |
5116 | if (!parse_ip_addr_or_hostname (&t, cfile, uniform)) | |
5117 | return 0; | |
5118 | } else { | |
be6be08d | 5119 | if (!parse_ip_addr (cfile, &addr)) |
02a015fb | 5120 | return 0; |
d758ad8c TL |
5121 | if (!make_const_data (&t, addr.iabuf, addr.len, |
5122 | 0, 1, MDL)) | |
02a015fb | 5123 | return 0; |
be6be08d | 5124 | } |
be6be08d | 5125 | break; |
98bd7ca0 DH |
5126 | |
5127 | case '6': /* IPv6 address. */ | |
5128 | if (!parse_ip6_addr(cfile, &addr)) { | |
5129 | return 0; | |
5130 | } | |
5131 | if (!make_const_data(&t, addr.iabuf, addr.len, 0, 1, MDL)) { | |
5132 | return 0; | |
5133 | } | |
5134 | break; | |
be6be08d | 5135 | |
fdac15d9 | 5136 | case 'T': /* Lease interval. */ |
98311e4b | 5137 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
5138 | if (token != INFINITE) |
5139 | goto check_number; | |
5140 | putLong (buf, -1); | |
d758ad8c | 5141 | if (!make_const_data (&t, buf, 4, 0, 1, MDL)) |
fdac15d9 TL |
5142 | return 0; |
5143 | break; | |
5144 | ||
be6be08d TL |
5145 | case 'L': /* Unsigned 32-bit integer... */ |
5146 | case 'l': /* Signed 32-bit integer... */ | |
98311e4b | 5147 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 | 5148 | check_number: |
98311e4b | 5149 | if ((token != NUMBER) && (token != NUMBER_OR_NAME)) { |
be6be08d | 5150 | need_number: |
63a0ff88 | 5151 | if ((*fmt) [1] != 'o') { |
d8fc5060 TL |
5152 | parse_warn (cfile, "expecting number."); |
5153 | if (token != SEMI) | |
5154 | skip_to_semi (cfile); | |
5155 | } | |
02a015fb | 5156 | return 0; |
be6be08d | 5157 | } |
4615d498 | 5158 | convert_num (cfile, buf, val, 0, 32); |
d758ad8c | 5159 | if (!make_const_data (&t, buf, 4, 0, 1, MDL)) |
02a015fb | 5160 | return 0; |
be6be08d | 5161 | break; |
02a015fb | 5162 | |
be6be08d TL |
5163 | case 's': /* Signed 16-bit integer. */ |
5164 | case 'S': /* Unsigned 16-bit integer. */ | |
b3519f23 | 5165 | token = next_token (&val, (unsigned *)0, cfile); |
98311e4b DH |
5166 | if ((token != NUMBER) && (token != NUMBER_OR_NAME)) |
5167 | goto need_number; | |
4615d498 | 5168 | convert_num (cfile, buf, val, 0, 16); |
d758ad8c | 5169 | if (!make_const_data (&t, buf, 2, 0, 1, MDL)) |
02a015fb | 5170 | return 0; |
be6be08d | 5171 | break; |
02a015fb | 5172 | |
be6be08d TL |
5173 | case 'b': /* Signed 8-bit integer. */ |
5174 | case 'B': /* Unsigned 8-bit integer. */ | |
b3519f23 | 5175 | token = next_token (&val, (unsigned *)0, cfile); |
98311e4b DH |
5176 | if ((token != NUMBER) && (token != NUMBER_OR_NAME)) |
5177 | goto need_number; | |
4615d498 | 5178 | convert_num (cfile, buf, val, 0, 8); |
d758ad8c | 5179 | if (!make_const_data (&t, buf, 1, 0, 1, MDL)) |
02a015fb | 5180 | return 0; |
be6be08d | 5181 | break; |
02a015fb | 5182 | |
be6be08d | 5183 | case 'f': /* Boolean flag. */ |
98311e4b | 5184 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 5185 | if (!is_identifier (token)) { |
63a0ff88 | 5186 | if ((*fmt) [1] != 'o') |
d8fc5060 | 5187 | parse_warn (cfile, "expecting identifier."); |
be6be08d | 5188 | bad_flag: |
63a0ff88 | 5189 | if ((*fmt) [1] != 'o') { |
d8fc5060 TL |
5190 | if (token != SEMI) |
5191 | skip_to_semi (cfile); | |
5192 | } | |
02a015fb | 5193 | return 0; |
be6be08d TL |
5194 | } |
5195 | if (!strcasecmp (val, "true") | |
5196 | || !strcasecmp (val, "on")) | |
5197 | buf [0] = 1; | |
5198 | else if (!strcasecmp (val, "false") | |
5199 | || !strcasecmp (val, "off")) | |
5200 | buf [0] = 0; | |
0776fd12 TL |
5201 | else if (!strcasecmp (val, "ignore")) |
5202 | buf [0] = 2; | |
be6be08d | 5203 | else { |
63a0ff88 | 5204 | if ((*fmt) [1] != 'o') |
d8fc5060 | 5205 | parse_warn (cfile, "expecting boolean."); |
be6be08d TL |
5206 | goto bad_flag; |
5207 | } | |
d758ad8c | 5208 | if (!make_const_data (&t, buf, 1, 0, 1, MDL)) |
02a015fb | 5209 | return 0; |
be6be08d | 5210 | break; |
02a015fb | 5211 | |
be6be08d | 5212 | default: |
f769d5ac | 5213 | parse_warn (cfile, "Bad format %c in parse_option_token.", |
63a0ff88 | 5214 | **fmt); |
be6be08d | 5215 | skip_to_semi (cfile); |
02a015fb | 5216 | return 0; |
be6be08d | 5217 | } |
02a015fb TL |
5218 | if (expr) { |
5219 | if (!make_concat (rv, expr, t)) | |
5220 | return 0; | |
02a015fb | 5221 | } else |
d758ad8c TL |
5222 | expression_reference (rv, t, MDL); |
5223 | expression_dereference (&t, MDL); | |
02a015fb | 5224 | return 1; |
be6be08d | 5225 | } |
74f45f96 | 5226 | |
9a7f6fcd TL |
5227 | int parse_option_decl (oc, cfile) |
5228 | struct option_cache **oc; | |
5229 | struct parse *cfile; | |
5230 | { | |
5231 | const char *val; | |
5232 | int token; | |
5233 | u_int8_t buf [4]; | |
5234 | u_int8_t hunkbuf [1024]; | |
5235 | unsigned hunkix = 0; | |
42c6a803 | 5236 | const char *fmt, *f; |
4cba29f0 | 5237 | struct option *option=NULL; |
9a7f6fcd TL |
5238 | struct iaddr ip_addr; |
5239 | u_int8_t *dp; | |
98bd7ca0 | 5240 | const u_int8_t *cdp; |
9a7f6fcd TL |
5241 | unsigned len; |
5242 | int nul_term = 0; | |
5243 | struct buffer *bp; | |
5244 | int known = 0; | |
98bd7ca0 DH |
5245 | int compress; |
5246 | struct expression *express = NULL; | |
42c6a803 | 5247 | struct enumeration_value *e; |
f7fdb216 | 5248 | isc_result_t status; |
9a7f6fcd | 5249 | |
f7fdb216 DH |
5250 | status = parse_option_name (cfile, 0, &known, &option); |
5251 | if (status != ISC_R_SUCCESS || option == NULL) | |
9a7f6fcd TL |
5252 | return 0; |
5253 | ||
5254 | /* Parse the option data... */ | |
5255 | do { | |
5256 | /* Set a flag if this is an array of a simple type (i.e., | |
5257 | not an array of pairs of IP addresses, or something | |
5258 | like that. */ | |
5259 | int uniform = option -> format [1] == 'A'; | |
5260 | ||
5261 | for (fmt = option -> format; *fmt; fmt++) { | |
5262 | if (*fmt == 'A') | |
5263 | break; | |
5264 | switch (*fmt) { | |
5265 | case 'E': | |
5266 | fmt = strchr (fmt, '.'); | |
5267 | if (!fmt) { | |
5268 | parse_warn (cfile, | |
5269 | "malformed %s (bug!)", | |
5270 | "encapsulation format"); | |
f7fdb216 | 5271 | goto parse_exit; |
9a7f6fcd TL |
5272 | } |
5273 | case 'X': | |
5274 | len = parse_X (cfile, &hunkbuf [hunkix], | |
5275 | sizeof hunkbuf - hunkix); | |
5276 | hunkix += len; | |
5277 | break; | |
5278 | ||
5279 | case 't': /* Text string... */ | |
b3519f23 TL |
5280 | token = next_token (&val, |
5281 | &len, cfile); | |
9a7f6fcd TL |
5282 | if (token != STRING) { |
5283 | parse_warn (cfile, | |
5284 | "expecting string."); | |
f7fdb216 | 5285 | goto parse_exit; |
9a7f6fcd | 5286 | } |
9a7f6fcd TL |
5287 | if (hunkix + len + 1 > sizeof hunkbuf) { |
5288 | parse_warn (cfile, | |
5289 | "option data buffer %s", | |
5290 | "overflow"); | |
f7fdb216 | 5291 | goto parse_exit; |
9a7f6fcd TL |
5292 | } |
5293 | memcpy (&hunkbuf [hunkix], val, len + 1); | |
5294 | nul_term = 1; | |
5295 | hunkix += len; | |
5296 | break; | |
5297 | ||
98bd7ca0 DH |
5298 | case 'D': |
5299 | if (fmt[1] == 'c') { | |
5300 | compress = 1; | |
5301 | fmt++; | |
5302 | } else | |
5303 | compress = 0; | |
5304 | ||
5305 | express = parse_domain_list(cfile, compress); | |
5306 | ||
5307 | if (express == NULL) | |
5308 | goto exit; | |
5309 | ||
5310 | if (express->op != expr_const_data) { | |
5311 | parse_warn(cfile, "unexpected " | |
5312 | "expression"); | |
5313 | goto parse_exit; | |
5314 | } | |
5315 | ||
5316 | len = express->data.const_data.len; | |
5317 | cdp = express->data.const_data.data; | |
5318 | ||
5319 | if ((hunkix + len) > sizeof(hunkbuf)) { | |
5320 | parse_warn(cfile, "option data buffer " | |
5321 | "overflow"); | |
5322 | goto parse_exit; | |
5323 | } | |
5324 | memcpy(&hunkbuf[hunkix], cdp, len); | |
5325 | hunkix += len; | |
5326 | ||
5327 | expression_dereference(&express, MDL); | |
5328 | break; | |
5329 | ||
42c6a803 TL |
5330 | case 'N': |
5331 | f = fmt; | |
5332 | fmt = strchr (fmt, '.'); | |
5333 | if (!fmt) { | |
5334 | parse_warn (cfile, | |
5335 | "malformed %s (bug!)", | |
5336 | "enumeration format"); | |
f7fdb216 | 5337 | goto parse_exit; |
42c6a803 | 5338 | } |
b3519f23 TL |
5339 | token = next_token (&val, |
5340 | (unsigned *)0, cfile); | |
42c6a803 TL |
5341 | if (!is_identifier (token)) { |
5342 | parse_warn (cfile, | |
5343 | "identifier expected"); | |
f7fdb216 | 5344 | goto parse_exit; |
42c6a803 TL |
5345 | } |
5346 | e = find_enumeration_value (f, fmt - f, val); | |
5347 | if (!e) { | |
5348 | parse_warn (cfile, | |
5349 | "unknown value"); | |
f7fdb216 | 5350 | goto parse_exit; |
42c6a803 TL |
5351 | } |
5352 | len = 1; | |
5353 | dp = &e -> value; | |
5354 | goto alloc; | |
5355 | ||
98bd7ca0 DH |
5356 | case '6': |
5357 | if (!parse_ip6_addr(cfile, &ip_addr)) | |
5358 | goto exit; | |
5359 | len = ip_addr.len; | |
5360 | dp = ip_addr.iabuf; | |
5361 | goto alloc; | |
5362 | ||
9a7f6fcd TL |
5363 | case 'I': /* IP address. */ |
5364 | if (!parse_ip_addr (cfile, &ip_addr)) | |
f7fdb216 | 5365 | goto exit; |
9a7f6fcd TL |
5366 | len = ip_addr.len; |
5367 | dp = ip_addr.iabuf; | |
5368 | ||
5369 | alloc: | |
5370 | if (hunkix + len > sizeof hunkbuf) { | |
5371 | parse_warn (cfile, | |
5372 | "option data buffer %s", | |
5373 | "overflow"); | |
f7fdb216 | 5374 | goto parse_exit; |
9a7f6fcd TL |
5375 | } |
5376 | memcpy (&hunkbuf [hunkix], dp, len); | |
5377 | hunkix += len; | |
5378 | break; | |
5379 | ||
5380 | case 'L': /* Unsigned 32-bit integer... */ | |
5381 | case 'l': /* Signed 32-bit integer... */ | |
b3519f23 TL |
5382 | token = next_token (&val, |
5383 | (unsigned *)0, cfile); | |
98311e4b DH |
5384 | if ((token != NUMBER) && |
5385 | (token != NUMBER_OR_NAME)) { | |
9a7f6fcd TL |
5386 | need_number: |
5387 | parse_warn (cfile, | |
5388 | "expecting number."); | |
5389 | if (token != SEMI) | |
f7fdb216 DH |
5390 | goto parse_exit; |
5391 | else | |
5392 | goto exit; | |
9a7f6fcd TL |
5393 | } |
5394 | convert_num (cfile, buf, val, 0, 32); | |
5395 | len = 4; | |
5396 | dp = buf; | |
5397 | goto alloc; | |
5398 | ||
5399 | case 's': /* Signed 16-bit integer. */ | |
5400 | case 'S': /* Unsigned 16-bit integer. */ | |
b3519f23 TL |
5401 | token = next_token (&val, |
5402 | (unsigned *)0, cfile); | |
98311e4b DH |
5403 | if ((token != NUMBER) && |
5404 | (token != NUMBER_OR_NAME)) | |
9a7f6fcd TL |
5405 | goto need_number; |
5406 | convert_num (cfile, buf, val, 0, 16); | |
5407 | len = 2; | |
5408 | dp = buf; | |
5409 | goto alloc; | |
5410 | ||
5411 | case 'b': /* Signed 8-bit integer. */ | |
5412 | case 'B': /* Unsigned 8-bit integer. */ | |
b3519f23 TL |
5413 | token = next_token (&val, |
5414 | (unsigned *)0, cfile); | |
98311e4b DH |
5415 | if ((token != NUMBER) && |
5416 | (token != NUMBER_OR_NAME)) | |
9a7f6fcd TL |
5417 | goto need_number; |
5418 | convert_num (cfile, buf, val, 0, 8); | |
5419 | len = 1; | |
5420 | dp = buf; | |
5421 | goto alloc; | |
5422 | ||
5423 | case 'f': /* Boolean flag. */ | |
b3519f23 TL |
5424 | token = next_token (&val, |
5425 | (unsigned *)0, cfile); | |
9a7f6fcd TL |
5426 | if (!is_identifier (token)) { |
5427 | parse_warn (cfile, | |
5428 | "expecting identifier."); | |
5429 | bad_flag: | |
5430 | if (token != SEMI) | |
f7fdb216 DH |
5431 | goto parse_exit; |
5432 | else | |
5433 | goto exit; | |
9a7f6fcd TL |
5434 | } |
5435 | if (!strcasecmp (val, "true") | |
5436 | || !strcasecmp (val, "on")) | |
5437 | buf [0] = 1; | |
5438 | else if (!strcasecmp (val, "false") | |
5439 | || !strcasecmp (val, "off")) | |
5440 | buf [0] = 0; | |
5441 | else { | |
5442 | parse_warn (cfile, | |
5443 | "expecting boolean."); | |
5444 | goto bad_flag; | |
5445 | } | |
5446 | len = 1; | |
5447 | dp = buf; | |
5448 | goto alloc; | |
5449 | ||
5450 | default: | |
5451 | log_error ("parse_option_param: Bad format %c", | |
5452 | *fmt); | |
f7fdb216 | 5453 | goto parse_exit; |
9a7f6fcd TL |
5454 | } |
5455 | } | |
b3519f23 | 5456 | token = next_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
5457 | } while (*fmt == 'A' && token == COMMA); |
5458 | ||
5459 | if (token != SEMI) { | |
5460 | parse_warn (cfile, "semicolon expected."); | |
f7fdb216 | 5461 | goto parse_exit; |
9a7f6fcd TL |
5462 | } |
5463 | ||
5464 | bp = (struct buffer *)0; | |
5465 | if (!buffer_allocate (&bp, hunkix + nul_term, MDL)) | |
5466 | log_fatal ("no memory to store option declaration."); | |
5467 | if (!bp -> data) | |
5468 | log_fatal ("out of memory allocating option data."); | |
5469 | memcpy (bp -> data, hunkbuf, hunkix + nul_term); | |
5470 | ||
5471 | if (!option_cache_allocate (oc, MDL)) | |
5472 | log_fatal ("out of memory allocating option cache."); | |
5473 | ||
5474 | (*oc) -> data.buffer = bp; | |
5475 | (*oc) -> data.data = &bp -> data [0]; | |
5476 | (*oc) -> data.terminated = nul_term; | |
5477 | (*oc) -> data.len = hunkix; | |
f7fdb216 DH |
5478 | option_reference(&(*oc)->option, option, MDL); |
5479 | option_dereference(&option, MDL); | |
9a7f6fcd | 5480 | return 1; |
f7fdb216 DH |
5481 | |
5482 | parse_exit: | |
98bd7ca0 DH |
5483 | if (express != NULL) |
5484 | expression_dereference(&express, MDL); | |
f7fdb216 DH |
5485 | skip_to_semi (cfile); |
5486 | exit: | |
5487 | option_dereference(&option, MDL); | |
5488 | ||
5489 | return 0; | |
9a7f6fcd TL |
5490 | } |
5491 | ||
5492 | /* Consider merging parse_cshl into this. */ | |
5493 | ||
5494 | int parse_X (cfile, buf, max) | |
5495 | struct parse *cfile; | |
5496 | u_int8_t *buf; | |
5497 | unsigned max; | |
5498 | { | |
5499 | int token; | |
5500 | const char *val; | |
5501 | unsigned len; | |
5502 | u_int8_t *s; | |
5503 | ||
b3519f23 | 5504 | token = peek_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
5505 | if (token == NUMBER_OR_NAME || token == NUMBER) { |
5506 | len = 0; | |
5507 | do { | |
b3519f23 | 5508 | token = next_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
5509 | if (token != NUMBER && token != NUMBER_OR_NAME) { |
5510 | parse_warn (cfile, | |
5511 | "expecting hexadecimal constant."); | |
5512 | skip_to_semi (cfile); | |
5513 | return 0; | |
5514 | } | |
5515 | convert_num (cfile, &buf [len], val, 16, 8); | |
5516 | if (len++ > max) { | |
5517 | parse_warn (cfile, | |
5518 | "hexadecimal constant too long."); | |
5519 | skip_to_semi (cfile); | |
5520 | return 0; | |
5521 | } | |
b3519f23 | 5522 | token = peek_token (&val, (unsigned *)0, cfile); |
9a7f6fcd | 5523 | if (token == COLON) |
b3519f23 TL |
5524 | token = next_token (&val, |
5525 | (unsigned *)0, cfile); | |
9a7f6fcd TL |
5526 | } while (token == COLON); |
5527 | val = (char *)buf; | |
5528 | } else if (token == STRING) { | |
b3519f23 | 5529 | token = next_token (&val, &len, cfile); |
9a7f6fcd TL |
5530 | if (len + 1 > max) { |
5531 | parse_warn (cfile, "string constant too long."); | |
5532 | skip_to_semi (cfile); | |
5533 | return 0; | |
5534 | } | |
5535 | memcpy (buf, val, len + 1); | |
5536 | } else { | |
5537 | parse_warn (cfile, "expecting string or hexadecimal data"); | |
5538 | skip_to_semi (cfile); | |
5539 | return 0; | |
5540 | } | |
5541 | return len; | |
5542 | } | |
5543 | ||
cfdfb9f1 | 5544 | int parse_warn (struct parse *cfile, const char *fmt, ...) |
4bd8800e TL |
5545 | { |
5546 | va_list list; | |
4bd8800e TL |
5547 | char lexbuf [256]; |
5548 | char mbuf [1024]; | |
5549 | char fbuf [1024]; | |
5550 | unsigned i, lix; | |
5551 | ||
5552 | do_percentm (mbuf, fmt); | |
98311e4b DH |
5553 | /* %Audit% This is log output. %2004.06.17,Safe% |
5554 | * If we truncate we hope the user can get a hint from the log. | |
5555 | */ | |
4bd8800e TL |
5556 | snprintf (fbuf, sizeof fbuf, "%s line %d: %s", |
5557 | cfile -> tlname, cfile -> lexline, mbuf); | |
4bd8800e | 5558 | |
cfdfb9f1 | 5559 | va_start (list, fmt); |
4bd8800e TL |
5560 | vsnprintf (mbuf, sizeof mbuf, fbuf, list); |
5561 | va_end (list); | |
5562 | ||
5563 | lix = 0; | |
5564 | for (i = 0; | |
5565 | cfile -> token_line [i] && i < (cfile -> lexchar - 1); i++) { | |
5566 | if (lix < (sizeof lexbuf) - 1) | |
5567 | lexbuf [lix++] = ' '; | |
5568 | if (cfile -> token_line [i] == '\t') { | |
5569 | for (lix; | |
5570 | lix < (sizeof lexbuf) - 1 && (lix & 7); lix++) | |
5571 | lexbuf [lix] = ' '; | |
5572 | } | |
5573 | } | |
5574 | lexbuf [lix] = 0; | |
5575 | ||
5576 | #ifndef DEBUG | |
4f9e9f47 TL |
5577 | syslog (log_priority | LOG_ERR, "%s", mbuf); |
5578 | syslog (log_priority | LOG_ERR, "%s", cfile -> token_line); | |
4bd8800e TL |
5579 | if (cfile -> lexchar < 81) |
5580 | syslog (log_priority | LOG_ERR, "%s^", lexbuf); | |
5581 | #endif | |
5582 | ||
5583 | if (log_perror) { | |
98311e4b DH |
5584 | write (STDERR_FILENO, mbuf, strlen (mbuf)); |
5585 | write (STDERR_FILENO, "\n", 1); | |
5586 | write (STDERR_FILENO, cfile -> token_line, | |
5587 | strlen (cfile -> token_line)); | |
5588 | write (STDERR_FILENO, "\n", 1); | |
4bd8800e | 5589 | if (cfile -> lexchar < 81) |
98311e4b DH |
5590 | write (STDERR_FILENO, lexbuf, lix); |
5591 | write (STDERR_FILENO, "^\n", 2); | |
4bd8800e TL |
5592 | } |
5593 | ||
5594 | cfile -> warnings_occurred = 1; | |
5595 | ||
5596 | return 0; | |
5597 | } | |
dba5803b DH |
5598 | |
5599 | struct expression * | |
98bd7ca0 | 5600 | parse_domain_list(struct parse *cfile, int compress) |
dba5803b DH |
5601 | { |
5602 | const char *val; | |
5603 | enum dhcp_token token = SEMI; | |
5604 | struct expression *t = NULL; | |
5605 | unsigned len, clen = 0; | |
5606 | int result; | |
5607 | unsigned char compbuf[256 * NS_MAXCDNAME]; | |
5608 | const unsigned char *dnptrs[256], **lastdnptr; | |
5609 | ||
5610 | memset(compbuf, 0, sizeof(compbuf)); | |
5611 | memset(dnptrs, 0, sizeof(dnptrs)); | |
5612 | dnptrs[0] = compbuf; | |
5613 | lastdnptr = &dnptrs[255]; | |
5614 | ||
5615 | do { | |
5616 | /* Consume the COMMA token if peeked. */ | |
5617 | if (token == COMMA) | |
5618 | next_token(&val, NULL, cfile); | |
5619 | ||
5620 | /* Get next (or first) value. */ | |
5621 | token = next_token(&val, &len, cfile); | |
5622 | ||
5623 | if (token != STRING) { | |
5624 | parse_warn(cfile, "Expecting a domain string."); | |
5625 | return NULL; | |
5626 | } | |
5627 | ||
98bd7ca0 DH |
5628 | /* If compression pointers are enabled, compress. If not, |
5629 | * just pack the names in series into the buffer. | |
5630 | */ | |
5631 | if (compress) { | |
5632 | result = MRns_name_compress(val, compbuf + clen, | |
5633 | sizeof(compbuf) - clen, | |
5634 | dnptrs, lastdnptr); | |
5635 | ||
5636 | if (result < 0) { | |
5637 | parse_warn(cfile, "Error compressing domain " | |
5638 | "list: %m"); | |
5639 | return NULL; | |
5640 | } | |
dba5803b | 5641 | |
98bd7ca0 DH |
5642 | clen += result; |
5643 | } else { | |
5644 | result = MRns_name_pton(val, compbuf + clen, | |
5645 | sizeof(compbuf) - clen); | |
5646 | ||
5647 | /* result == 1 means the input was fully qualified. | |
5648 | * result == 0 means the input wasn't. | |
5649 | * result == -1 means bad things. | |
5650 | */ | |
5651 | if (result < 0) { | |
5652 | parse_warn(cfile, "Error assembling domain " | |
5653 | "list: %m"); | |
5654 | return NULL; | |
5655 | } | |
5656 | ||
5657 | /* | |
5658 | * We need to figure out how many bytes to increment | |
5659 | * our buffer pointer since pton doesn't tell us. | |
5660 | */ | |
5661 | while (compbuf[clen] != 0) | |
5662 | clen += compbuf[clen] + 1; | |
5663 | ||
5664 | /* Count the last label (0). */ | |
5665 | clen++; | |
dba5803b DH |
5666 | } |
5667 | ||
98bd7ca0 DH |
5668 | if (clen > sizeof(compbuf)) |
5669 | log_fatal("Impossible error at %s:%d", MDL); | |
dba5803b DH |
5670 | |
5671 | token = peek_token(&val, NULL, cfile); | |
5672 | } while (token == COMMA); | |
5673 | ||
5674 | if (!make_const_data(&t, compbuf, clen, 1, 1, MDL)) | |
5675 | log_fatal("No memory for domain list object."); | |
5676 | ||
5677 | return t; | |
5678 | } | |
5679 |