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63115431 TL |
1 | /* parse.c |
2 | ||
3 | Common parser code for dhcpd and dhclient. */ | |
4 | ||
5 | /* | |
b047bd38 | 6 | * Copyright (c) 2004-2012 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> | |
2c85ac9b | 25 | * https://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 |
2c85ac9b | 30 | * ``https://www.isc.org/''. To learn more about Vixie Enterprises, |
49733f31 TL |
31 | * see ``http://www.vix.com''. To learn more about Nominum, Inc., see |
32 | * ``http://www.nominum.com''. | |
63115431 TL |
33 | */ |
34 | ||
63115431 | 35 | #include "dhcpd.h" |
fe5b0fdd | 36 | #include <syslog.h> |
63115431 | 37 | |
42c6a803 TL |
38 | /* Enumerations can be specified in option formats, and are used for |
39 | parsing, so we define the routines that manage them here. */ | |
40 | ||
41 | struct enumeration *enumerations; | |
42 | ||
43 | void add_enumeration (struct enumeration *enumeration) | |
44 | { | |
45 | enumeration -> next = enumerations; | |
46 | enumerations = enumeration; | |
47 | } | |
48 | ||
49 | struct enumeration *find_enumeration (const char *name, int length) | |
50 | { | |
51 | struct enumeration *e; | |
52 | ||
53 | for (e = enumerations; e; e = e -> next) | |
54 | if (strlen (e -> name) == length && | |
55 | !memcmp (e -> name, name, (unsigned)length)) | |
56 | return e; | |
57 | return (struct enumeration *)0; | |
58 | } | |
59 | ||
60 | struct enumeration_value *find_enumeration_value (const char *name, | |
61 | int length, | |
c54db708 | 62 | unsigned *widthp, |
42c6a803 TL |
63 | const char *value) |
64 | { | |
65 | struct enumeration *e; | |
66 | int i; | |
67 | ||
68 | e = find_enumeration (name, length); | |
69 | if (e) { | |
c54db708 FD |
70 | if (widthp != NULL) |
71 | *widthp = e->width; | |
42c6a803 TL |
72 | for (i = 0; e -> values [i].name; i++) { |
73 | if (!strcmp (value, e -> values [i].name)) | |
74 | return &e -> values [i]; | |
75 | } | |
76 | } | |
77 | return (struct enumeration_value *)0; | |
78 | } | |
79 | ||
63115431 TL |
80 | /* Skip to the semicolon ending the current statement. If we encounter |
81 | braces, the matching closing brace terminates the statement. If we | |
82 | encounter a right brace but haven't encountered a left brace, return | |
83 | leaving the brace in the token buffer for the caller. If we see a | |
84 | semicolon and haven't seen a left brace, return. This lets us skip | |
85 | over: | |
86 | ||
87 | statement; | |
88 | statement foo bar { } | |
89 | statement foo bar { statement { } } | |
90 | statement} | |
91 | ||
92 | ...et cetera. */ | |
93 | ||
94 | void skip_to_semi (cfile) | |
4615d498 | 95 | struct parse *cfile; |
cea8b5c9 TL |
96 | { |
97 | skip_to_rbrace (cfile, 0); | |
98 | } | |
99 | ||
100 | void skip_to_rbrace (cfile, brace_count) | |
4615d498 | 101 | struct parse *cfile; |
cea8b5c9 | 102 | int brace_count; |
63115431 | 103 | { |
02a015fb | 104 | enum dhcp_token token; |
b1b7b521 | 105 | const char *val; |
63115431 | 106 | |
f579f39f TL |
107 | #if defined (DEBUG_TOKEN) |
108 | log_error ("skip_to_rbrace: %d\n", brace_count); | |
109 | #endif | |
63115431 | 110 | do { |
b3519f23 | 111 | token = peek_token (&val, (unsigned *)0, cfile); |
63115431 | 112 | if (token == RBRACE) { |
b3519f23 | 113 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 114 | if (brace_count) { |
63115431 TL |
115 | if (!--brace_count) |
116 | return; | |
117 | } else | |
118 | return; | |
119 | } else if (token == LBRACE) { | |
120 | brace_count++; | |
121 | } else if (token == SEMI && !brace_count) { | |
b3519f23 | 122 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 123 | return; |
796ef008 TL |
124 | } else if (token == EOL) { |
125 | /* EOL only happens when parsing /etc/resolv.conf, | |
126 | and we treat it like a semicolon because the | |
127 | resolv.conf file is line-oriented. */ | |
b3519f23 | 128 | token = next_token (&val, (unsigned *)0, cfile); |
796ef008 | 129 | return; |
63115431 | 130 | } |
b3519f23 | 131 | token = next_token (&val, (unsigned *)0, cfile); |
0b69dcc8 | 132 | } while (token != END_OF_FILE); |
63115431 TL |
133 | } |
134 | ||
135 | int parse_semi (cfile) | |
4615d498 | 136 | struct parse *cfile; |
63115431 | 137 | { |
02a015fb | 138 | enum dhcp_token token; |
b1b7b521 | 139 | const char *val; |
63115431 | 140 | |
b3519f23 | 141 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 142 | if (token != SEMI) { |
4615d498 | 143 | parse_warn (cfile, "semicolon expected."); |
63115431 TL |
144 | skip_to_semi (cfile); |
145 | return 0; | |
146 | } | |
147 | return 1; | |
148 | } | |
149 | ||
150 | /* string-parameter :== STRING SEMI */ | |
151 | ||
b3519f23 | 152 | int parse_string (cfile, sptr, lptr) |
4615d498 | 153 | struct parse *cfile; |
b3519f23 TL |
154 | char **sptr; |
155 | unsigned *lptr; | |
63115431 | 156 | { |
b1b7b521 | 157 | const char *val; |
02a015fb | 158 | enum dhcp_token token; |
63115431 | 159 | char *s; |
b3519f23 | 160 | unsigned len; |
63115431 | 161 | |
b3519f23 | 162 | token = next_token (&val, &len, cfile); |
63115431 | 163 | if (token != STRING) { |
f769d5ac | 164 | parse_warn (cfile, "expecting a string"); |
63115431 | 165 | skip_to_semi (cfile); |
b3519f23 | 166 | return 0; |
63115431 | 167 | } |
b3519f23 | 168 | s = (char *)dmalloc (len + 1, MDL); |
63115431 | 169 | if (!s) |
8ae2d595 | 170 | log_fatal ("no memory for string %s.", val); |
b3519f23 | 171 | memcpy (s, val, len + 1); |
63115431 | 172 | |
b3519f23 TL |
173 | if (!parse_semi (cfile)) { |
174 | dfree (s, MDL); | |
175 | return 0; | |
176 | } | |
177 | if (sptr) | |
178 | *sptr = s; | |
179 | else | |
180 | dfree (s, MDL); | |
181 | if (lptr) | |
182 | *lptr = len; | |
183 | return 1; | |
63115431 TL |
184 | } |
185 | ||
be6be08d TL |
186 | /* |
187 | * hostname :== IDENTIFIER | |
188 | * | IDENTIFIER DOT | |
189 | * | hostname DOT IDENTIFIER | |
190 | */ | |
796ef008 TL |
191 | |
192 | char *parse_host_name (cfile) | |
4615d498 | 193 | struct parse *cfile; |
796ef008 | 194 | { |
b1b7b521 | 195 | const char *val; |
02a015fb | 196 | enum dhcp_token token; |
b1b7b521 | 197 | unsigned len = 0; |
796ef008 TL |
198 | char *s; |
199 | char *t; | |
200 | pair c = (pair)0; | |
88ab5737 | 201 | int ltid = 0; |
796ef008 TL |
202 | |
203 | /* Read a dotted hostname... */ | |
204 | do { | |
205 | /* Read a token, which should be an identifier. */ | |
b3519f23 | 206 | token = peek_token (&val, (unsigned *)0, cfile); |
68dda014 TL |
207 | if (!is_identifier (token) && token != NUMBER) |
208 | break; | |
b3519f23 | 209 | token = next_token (&val, (unsigned *)0, cfile); |
68dda014 | 210 | |
796ef008 | 211 | /* Store this identifier... */ |
fdac15d9 | 212 | if (!(s = (char *)dmalloc (strlen (val) + 1, MDL))) |
8ae2d595 | 213 | log_fatal ("can't allocate temp space for hostname."); |
796ef008 TL |
214 | strcpy (s, val); |
215 | c = cons ((caddr_t)s, c); | |
216 | len += strlen (s) + 1; | |
217 | /* Look for a dot; if it's there, keep going, otherwise | |
218 | we're done. */ | |
b3519f23 | 219 | token = peek_token (&val, (unsigned *)0, cfile); |
88ab5737 | 220 | if (token == DOT) { |
b3519f23 | 221 | token = next_token (&val, (unsigned *)0, cfile); |
88ab5737 TL |
222 | ltid = 1; |
223 | } else | |
224 | ltid = 0; | |
796ef008 TL |
225 | } while (token == DOT); |
226 | ||
fa392aea TL |
227 | /* Should be at least one token. */ |
228 | if (!len) | |
229 | return (char *)0; | |
230 | ||
796ef008 | 231 | /* Assemble the hostname together into a string. */ |
88ab5737 | 232 | if (!(s = (char *)dmalloc (len + ltid, MDL))) |
8ae2d595 | 233 | log_fatal ("can't allocate space for hostname."); |
88ab5737 | 234 | t = s + len + ltid; |
796ef008 | 235 | *--t = 0; |
88ab5737 TL |
236 | if (ltid) |
237 | *--t = '.'; | |
796ef008 TL |
238 | while (c) { |
239 | pair cdr = c -> cdr; | |
b1b7b521 | 240 | unsigned l = strlen ((char *)(c -> car)); |
796ef008 TL |
241 | t -= l; |
242 | memcpy (t, (char *)(c -> car), l); | |
243 | /* Free up temp space. */ | |
fdac15d9 TL |
244 | dfree (c -> car, MDL); |
245 | dfree (c, MDL); | |
796ef008 TL |
246 | c = cdr; |
247 | if (t != s) | |
248 | *--t = '.'; | |
249 | } | |
250 | return s; | |
251 | } | |
252 | ||
be6be08d TL |
253 | /* ip-addr-or-hostname :== ip-address | hostname |
254 | ip-address :== NUMBER DOT NUMBER DOT NUMBER DOT NUMBER | |
255 | ||
256 | Parse an ip address or a hostname. If uniform is zero, put in | |
257 | an expr_substring node to limit hostnames that evaluate to more | |
66eaae18 SK |
258 | than one IP address. |
259 | ||
260 | Note that RFC1123 permits hostnames to consist of all digits, | |
261 | making it difficult to quickly disambiguate them from ip addresses. | |
262 | */ | |
be6be08d | 263 | |
02a015fb TL |
264 | int parse_ip_addr_or_hostname (expr, cfile, uniform) |
265 | struct expression **expr; | |
4615d498 | 266 | struct parse *cfile; |
be6be08d TL |
267 | int uniform; |
268 | { | |
b1b7b521 | 269 | const char *val; |
02a015fb | 270 | enum dhcp_token token; |
be6be08d | 271 | unsigned char addr [4]; |
b1b7b521 | 272 | unsigned len = sizeof addr; |
be6be08d | 273 | char *name; |
02a015fb | 274 | struct expression *x = (struct expression *)0; |
66eaae18 | 275 | int ipaddr = 0; |
be6be08d | 276 | |
b3519f23 | 277 | token = peek_token (&val, (unsigned *)0, cfile); |
66eaae18 SK |
278 | |
279 | if (token == NUMBER) { | |
280 | /* | |
281 | * a hostname may be numeric, but domain names must | |
282 | * start with a letter, so we can disambiguate by | |
283 | * looking ahead a few tokens. we save the parse | |
284 | * context first, and restore it after we know what | |
285 | * we're dealing with. | |
286 | */ | |
bda33169 | 287 | save_parse_state(cfile); |
66eaae18 SK |
288 | (void) next_token(NULL, NULL, cfile); |
289 | if (next_token(NULL, NULL, cfile) == DOT && | |
290 | next_token(NULL, NULL, cfile) == NUMBER) | |
291 | ipaddr = 1; | |
bda33169 | 292 | restore_parse_state(cfile); |
66eaae18 SK |
293 | |
294 | if (ipaddr && | |
295 | parse_numeric_aggregate (cfile, addr, &len, DOT, 10, 8)) | |
296 | return make_const_data (expr, addr, len, 0, 1, MDL); | |
297 | ||
298 | } | |
299 | ||
300 | if (is_identifier (token) || token == NUMBER) { | |
be6be08d TL |
301 | name = parse_host_name (cfile); |
302 | if (!name) | |
02a015fb | 303 | return 0; |
98311e4b DH |
304 | if (!make_host_lookup (expr, name)) { |
305 | dfree(name, MDL); | |
02a015fb | 306 | return 0; |
98311e4b DH |
307 | } |
308 | dfree(name, MDL); | |
02a015fb TL |
309 | if (!uniform) { |
310 | if (!make_limit (&x, *expr, 4)) | |
311 | return 0; | |
4bd8800e | 312 | expression_dereference (expr, MDL); |
02a015fb TL |
313 | *expr = x; |
314 | } | |
be6be08d TL |
315 | } else { |
316 | if (token != RBRACE && token != LBRACE) | |
b3519f23 | 317 | token = next_token (&val, (unsigned *)0, cfile); |
4615d498 | 318 | parse_warn (cfile, "%s (%d): expecting IP address or hostname", |
be6be08d TL |
319 | val, token); |
320 | if (token != SEMI) | |
321 | skip_to_semi (cfile); | |
02a015fb | 322 | return 0; |
be6be08d TL |
323 | } |
324 | ||
02a015fb | 325 | return 1; |
be6be08d TL |
326 | } |
327 | ||
328 | /* | |
329 | * ip-address :== NUMBER DOT NUMBER DOT NUMBER DOT NUMBER | |
330 | */ | |
331 | ||
796ef008 | 332 | int parse_ip_addr (cfile, addr) |
4615d498 | 333 | struct parse *cfile; |
796ef008 TL |
334 | struct iaddr *addr; |
335 | { | |
796ef008 TL |
336 | addr -> len = 4; |
337 | if (parse_numeric_aggregate (cfile, addr -> iabuf, | |
338 | &addr -> len, DOT, 10, 8)) | |
339 | return 1; | |
340 | return 0; | |
341 | } | |
342 | ||
98bd7ca0 | 343 | /* |
20ae1aff | 344 | * Return true if every character in the string is hexadecimal. |
98bd7ca0 DH |
345 | */ |
346 | static int | |
347 | is_hex_string(const char *s) { | |
348 | while (*s != '\0') { | |
5eab8594 | 349 | if (!isxdigit((int)*s)) { |
98bd7ca0 DH |
350 | return 0; |
351 | } | |
352 | s++; | |
353 | } | |
354 | return 1; | |
355 | } | |
356 | ||
357 | /* | |
358 | * ip-address6 :== (complicated set of rules) | |
359 | * | |
360 | * See section 2.2 of RFC 1884 for details. | |
361 | * | |
362 | * We are lazy for this. We pull numbers, names, colons, and dots | |
363 | * together and then throw the resulting string at the inet_pton() | |
364 | * function. | |
365 | */ | |
366 | ||
367 | int | |
368 | parse_ip6_addr(struct parse *cfile, struct iaddr *addr) { | |
369 | enum dhcp_token token; | |
370 | const char *val; | |
371 | int val_len; | |
372 | ||
373 | char v6[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")]; | |
374 | int v6_len; | |
375 | ||
bda33169 SK |
376 | /* |
377 | * First token is non-raw. This way we eat any whitespace before | |
378 | * our IPv6 address begins, like one would expect. | |
379 | */ | |
380 | token = peek_token(&val, NULL, cfile); | |
381 | ||
382 | /* | |
383 | * Gather symbols. | |
384 | */ | |
98bd7ca0 DH |
385 | v6_len = 0; |
386 | for (;;) { | |
98bd7ca0 DH |
387 | if ((((token == NAME) || (token == NUMBER_OR_NAME)) && |
388 | is_hex_string(val)) || | |
389 | (token == NUMBER) || | |
390 | (token == DOT) || | |
391 | (token == COLON)) { | |
392 | ||
bda33169 | 393 | next_raw_token(&val, NULL, cfile); |
98bd7ca0 DH |
394 | val_len = strlen(val); |
395 | if ((v6_len + val_len) >= sizeof(v6)) { | |
396 | parse_warn(cfile, "Invalid IPv6 address."); | |
397 | skip_to_semi(cfile); | |
398 | return 0; | |
399 | } | |
400 | memcpy(v6+v6_len, val, val_len); | |
401 | v6_len += val_len; | |
402 | ||
403 | } else { | |
404 | break; | |
405 | } | |
bda33169 | 406 | token = peek_raw_token(&val, NULL, cfile); |
98bd7ca0 DH |
407 | } |
408 | v6[v6_len] = '\0'; | |
409 | ||
bda33169 SK |
410 | /* |
411 | * Use inet_pton() for actual work. | |
412 | */ | |
98bd7ca0 DH |
413 | if (inet_pton(AF_INET6, v6, addr->iabuf) <= 0) { |
414 | parse_warn(cfile, "Invalid IPv6 address."); | |
415 | skip_to_semi(cfile); | |
416 | return 0; | |
417 | } | |
418 | addr->len = 16; | |
419 | return 1; | |
420 | } | |
421 | ||
422 | /* | |
423 | * Same as parse_ip6_addr() above, but returns the value in the | |
424 | * expression rather than in an address structure. | |
425 | */ | |
426 | int | |
427 | parse_ip6_addr_expr(struct expression **expr, | |
428 | struct parse *cfile) { | |
429 | struct iaddr addr; | |
430 | ||
431 | if (!parse_ip6_addr(cfile, &addr)) { | |
432 | return 0; | |
433 | } | |
434 | return make_const_data(expr, addr.iabuf, addr.len, 0, 1, MDL); | |
435 | } | |
436 | ||
1d9774ab FD |
437 | /* |
438 | * ip6-prefix :== ip6-address "/" NUMBER | |
439 | */ | |
440 | int | |
441 | parse_ip6_prefix(struct parse *cfile, struct iaddr *addr, u_int8_t *plen) { | |
442 | enum dhcp_token token; | |
443 | const char *val; | |
444 | int n; | |
445 | ||
446 | if (!parse_ip6_addr(cfile, addr)) { | |
447 | return 0; | |
448 | } | |
449 | token = next_token(&val, NULL, cfile); | |
450 | if (token != SLASH) { | |
451 | parse_warn(cfile, "Slash expected."); | |
452 | if (token != SEMI) | |
453 | skip_to_semi(cfile); | |
454 | return 0; | |
455 | } | |
456 | token = next_token(&val, NULL, cfile); | |
457 | if (token != NUMBER) { | |
458 | parse_warn(cfile, "Number expected."); | |
459 | if (token != SEMI) | |
460 | skip_to_semi(cfile); | |
461 | return 0; | |
462 | } | |
463 | n = atoi(val); | |
464 | if ((n < 0) || (n > 128)) { | |
465 | parse_warn(cfile, "Invalid IPv6 prefix length."); | |
466 | skip_to_semi(cfile); | |
467 | return 0; | |
468 | } | |
469 | if (!is_cidr_mask_valid(addr, n)) { | |
470 | parse_warn(cfile, "network mask too short."); | |
471 | skip_to_semi(cfile); | |
472 | return 0; | |
473 | } | |
474 | *plen = n; | |
475 | return 1; | |
476 | } | |
477 | ||
febbd402 DH |
478 | /* |
479 | * ip-address-with-subnet :== ip-address | | |
480 | * ip-address "/" NUMBER | |
481 | */ | |
482 | ||
483 | int | |
484 | parse_ip_addr_with_subnet(cfile, match) | |
485 | struct parse *cfile; | |
486 | struct iaddrmatch *match; | |
487 | { | |
488 | const char *val, *orig; | |
489 | enum dhcp_token token; | |
490 | int prefixlen; | |
491 | int fflen; | |
492 | unsigned char newval, warnmask=0; | |
493 | ||
494 | if (parse_ip_addr(cfile, &match->addr)) { | |
495 | /* default to host mask */ | |
496 | prefixlen = match->addr.len * 8; | |
497 | ||
498 | token = peek_token(&val, NULL, cfile); | |
499 | ||
500 | if (token == SLASH) { | |
501 | next_token(&val, NULL, cfile); | |
502 | token = next_token(&val, NULL, cfile); | |
503 | ||
504 | if (token != NUMBER) { | |
505 | parse_warn(cfile, "Invalid CIDR prefix length:" | |
506 | " expecting a number."); | |
507 | return 0; | |
508 | } | |
509 | ||
510 | prefixlen = atoi(val); | |
511 | ||
512 | if (prefixlen < 0 || | |
513 | prefixlen > (match->addr.len * 8)) { | |
514 | parse_warn(cfile, "subnet prefix is out of " | |
515 | "range [0..%d].", | |
516 | match->addr.len * 8); | |
517 | return 0; | |
518 | } | |
519 | } | |
520 | ||
521 | /* construct a suitable mask field */ | |
522 | ||
523 | /* copy length */ | |
524 | match->mask.len = match->addr.len; | |
525 | ||
526 | /* count of 0xff bytes in mask */ | |
527 | fflen = prefixlen / 8; | |
528 | ||
529 | /* set leading mask */ | |
530 | memset(match->mask.iabuf, 0xff, fflen); | |
531 | ||
532 | /* set zeroes */ | |
533 | if (fflen < match->mask.len) { | |
534 | match->mask.iabuf[fflen] = | |
535 | "\x00\x80\xc0\xe0\xf0\xf8\xfc\xfe"[prefixlen % 8]; | |
536 | ||
537 | memset(match->mask.iabuf+fflen+1, 0x00, | |
538 | match->mask.len - fflen - 1); | |
539 | ||
540 | /* AND-out insignificant bits from supplied netmask. */ | |
541 | orig = piaddr(match->addr); | |
542 | do { | |
543 | newval = match->addr.iabuf[fflen] & | |
544 | match->mask.iabuf[fflen]; | |
545 | ||
546 | if (newval != match->addr.iabuf[fflen]) { | |
547 | warnmask = 1; | |
548 | match->addr.iabuf[fflen] = newval; | |
549 | } | |
550 | } while (++fflen < match->mask.len); | |
551 | ||
552 | if (warnmask) { | |
553 | log_error("Warning: Extraneous bits removed " | |
554 | "in address component of %s/%d.", | |
555 | orig, prefixlen); | |
556 | log_error("New value: %s/%d.", | |
557 | piaddr(match->addr), prefixlen); | |
558 | } | |
559 | } | |
560 | ||
561 | return 1; | |
562 | } | |
563 | ||
564 | parse_warn(cfile, | |
565 | "expecting ip-address or ip-address/prefixlen"); | |
566 | ||
567 | return 0; /* let caller pick up pieces */ | |
568 | } | |
569 | ||
be6be08d | 570 | /* |
c57db45c | 571 | * hardware-parameter :== HARDWARE hardware-type colon-separated-hex-list SEMI |
b047bd38 SR |
572 | * hardware-type :== ETHERNET | TOKEN_RING | TOKEN_FDDI | INFINIBAND |
573 | * Note that INFINIBAND may not be useful for some items, such as classification | |
574 | * as the hardware address won't always be available. | |
be6be08d | 575 | */ |
63115431 TL |
576 | |
577 | void parse_hardware_param (cfile, hardware) | |
4615d498 | 578 | struct parse *cfile; |
63115431 TL |
579 | struct hardware *hardware; |
580 | { | |
b1b7b521 | 581 | const char *val; |
02a015fb | 582 | enum dhcp_token token; |
e703795d | 583 | unsigned hlen; |
63115431 TL |
584 | unsigned char *t; |
585 | ||
b047bd38 | 586 | token = next_token(&val, NULL, cfile); |
63115431 TL |
587 | switch (token) { |
588 | case ETHERNET: | |
b047bd38 | 589 | hardware->hbuf[0] = HTYPE_ETHER; |
63115431 TL |
590 | break; |
591 | case TOKEN_RING: | |
b047bd38 | 592 | hardware->hbuf[0] = HTYPE_IEEE802; |
63115431 | 593 | break; |
219a65eb | 594 | case TOKEN_FDDI: |
b047bd38 SR |
595 | hardware->hbuf[0] = HTYPE_FDDI; |
596 | break; | |
597 | case TOKEN_INFINIBAND: | |
598 | hardware->hbuf[0] = HTYPE_INFINIBAND; | |
cea8b5c9 | 599 | break; |
63115431 | 600 | default: |
b047bd38 SR |
601 | if (!strncmp(val, "unknown-", 8)) { |
602 | hardware->hbuf[0] = atoi(&val[8]); | |
7d452841 | 603 | } else { |
b047bd38 SR |
604 | parse_warn(cfile, |
605 | "expecting a network hardware type"); | |
606 | skip_to_semi(cfile); | |
7d452841 TL |
607 | |
608 | return; | |
609 | } | |
63115431 TL |
610 | } |
611 | ||
612 | /* Parse the hardware address information. Technically, | |
613 | it would make a lot of sense to restrict the length of the | |
614 | data we'll accept here to the length of a particular hardware | |
615 | address type. Unfortunately, there are some broken clients | |
616 | out there that put bogus data in the chaddr buffer, and we accept | |
617 | that data in the lease file rather than simply failing on such | |
618 | clients. Yuck. */ | |
619 | hlen = 0; | |
b047bd38 | 620 | token = peek_token(&val, NULL, cfile); |
1898dcf7 | 621 | if (token == SEMI) { |
b047bd38 | 622 | hardware->hlen = 1; |
1898dcf7 TL |
623 | goto out; |
624 | } | |
b047bd38 SR |
625 | t = parse_numeric_aggregate(cfile, NULL, &hlen, COLON, 16, 8); |
626 | if (t == NULL) { | |
627 | hardware->hlen = 1; | |
63115431 | 628 | return; |
1898dcf7 | 629 | } |
b047bd38 SR |
630 | if (hlen + 1 > sizeof(hardware->hbuf)) { |
631 | dfree(t, MDL); | |
632 | parse_warn(cfile, "hardware address too long"); | |
63115431 | 633 | } else { |
b047bd38 SR |
634 | hardware->hlen = hlen + 1; |
635 | memcpy((unsigned char *)&hardware->hbuf[1], t, hlen); | |
636 | if (hlen + 1 < sizeof(hardware->hbuf)) | |
637 | memset(&hardware->hbuf[hlen + 1], 0, | |
638 | (sizeof(hardware->hbuf)) - hlen - 1); | |
639 | dfree(t, MDL); | |
63115431 TL |
640 | } |
641 | ||
1898dcf7 | 642 | out: |
b047bd38 | 643 | token = next_token(&val, NULL, cfile); |
63115431 | 644 | if (token != SEMI) { |
b047bd38 SR |
645 | parse_warn(cfile, "expecting semicolon."); |
646 | skip_to_semi(cfile); | |
63115431 TL |
647 | } |
648 | } | |
649 | ||
650 | /* lease-time :== NUMBER SEMI */ | |
651 | ||
652 | void parse_lease_time (cfile, timep) | |
4615d498 | 653 | struct parse *cfile; |
63115431 TL |
654 | TIME *timep; |
655 | { | |
b1b7b521 | 656 | const char *val; |
02a015fb | 657 | enum dhcp_token token; |
88cd8aca | 658 | u_int32_t num; |
63115431 | 659 | |
b3519f23 | 660 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 661 | if (token != NUMBER) { |
4615d498 | 662 | parse_warn (cfile, "Expecting numeric lease time"); |
63115431 TL |
663 | skip_to_semi (cfile); |
664 | return; | |
665 | } | |
88cd8aca | 666 | convert_num(cfile, (unsigned char *)&num, val, 10, 32); |
63115431 | 667 | /* Unswap the number - convert_num returns stuff in NBO. */ |
88cd8aca | 668 | *timep = ntohl(num); |
63115431 TL |
669 | |
670 | parse_semi (cfile); | |
671 | } | |
672 | ||
673 | /* No BNF for numeric aggregates - that's defined by the caller. What | |
c57db45c SK |
674 | this function does is to parse a sequence of numbers separated by |
675 | the token specified in separator. If max is zero, any number of | |
63115431 TL |
676 | numbers will be parsed; otherwise, exactly max numbers are |
677 | expected. Base and size tell us how to internalize the numbers | |
0f750c4f SR |
678 | once they've been tokenized. |
679 | ||
680 | buf - A pointer to space to return the parsed value, if it is null | |
681 | then the function will allocate space for the return. | |
682 | ||
683 | max - The maximum number of items to store. If zero there is no | |
684 | maximum. When buf is null and the function needs to allocate space | |
685 | it will do an allocation of max size at the beginning if max is non | |
686 | zero. If max is zero then the allocation will be done later, after | |
687 | the function has determined the size necessary for the incoming | |
688 | string. | |
689 | ||
690 | returns NULL on errors or a pointer to the value string on success. | |
691 | The pointer will either be buf if it was non-NULL or newly allocated | |
692 | space if buf was NULL | |
693 | */ | |
694 | ||
63115431 TL |
695 | |
696 | unsigned char *parse_numeric_aggregate (cfile, buf, | |
c57db45c | 697 | max, separator, base, size) |
4615d498 | 698 | struct parse *cfile; |
63115431 | 699 | unsigned char *buf; |
b1b7b521 | 700 | unsigned *max; |
c57db45c | 701 | int separator; |
63115431 | 702 | int base; |
b1b7b521 | 703 | unsigned size; |
63115431 | 704 | { |
b1b7b521 | 705 | const char *val; |
02a015fb | 706 | enum dhcp_token token; |
63115431 | 707 | unsigned char *bufp = buf, *s, *t; |
b1b7b521 | 708 | unsigned count = 0; |
63115431 TL |
709 | pair c = (pair)0; |
710 | ||
711 | if (!bufp && *max) { | |
fdac15d9 | 712 | bufp = (unsigned char *)dmalloc (*max * size / 8, MDL); |
63115431 | 713 | if (!bufp) |
1ff8f8ea | 714 | log_fatal ("no space for numeric aggregate"); |
0f750c4f SR |
715 | } |
716 | s = bufp; | |
63115431 TL |
717 | |
718 | do { | |
719 | if (count) { | |
b3519f23 | 720 | token = peek_token (&val, (unsigned *)0, cfile); |
c57db45c | 721 | if (token != separator) { |
63115431 TL |
722 | if (!*max) |
723 | break; | |
724 | if (token != RBRACE && token != LBRACE) | |
b3519f23 TL |
725 | token = next_token (&val, |
726 | (unsigned *)0, | |
727 | cfile); | |
4615d498 | 728 | parse_warn (cfile, "too few numbers."); |
63115431 TL |
729 | if (token != SEMI) |
730 | skip_to_semi (cfile); | |
0f750c4f SR |
731 | /* free bufp if it was allocated */ |
732 | if ((bufp != NULL) && (bufp != buf)) | |
733 | dfree(bufp, MDL); | |
63115431 TL |
734 | return (unsigned char *)0; |
735 | } | |
b3519f23 | 736 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 737 | } |
b3519f23 | 738 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 739 | |
0b69dcc8 | 740 | if (token == END_OF_FILE) { |
4615d498 | 741 | parse_warn (cfile, "unexpected end of file"); |
63115431 TL |
742 | break; |
743 | } | |
744 | ||
745 | /* Allow NUMBER_OR_NAME if base is 16. */ | |
746 | if (token != NUMBER && | |
747 | (base != 16 || token != NUMBER_OR_NAME)) { | |
4615d498 | 748 | parse_warn (cfile, "expecting numeric value."); |
63115431 | 749 | skip_to_semi (cfile); |
0f750c4f SR |
750 | /* free bufp if it was allocated */ |
751 | if ((bufp != NULL) && (bufp != buf)) | |
752 | dfree(bufp, MDL); | |
753 | /* free any linked numbers we may have allocated */ | |
754 | while (c) { | |
755 | pair cdr = c->cdr; | |
756 | dfree(c->car, MDL); | |
757 | dfree(c, MDL); | |
758 | c = cdr; | |
759 | } | |
760 | return (NULL); | |
63115431 TL |
761 | } |
762 | /* If we can, convert the number now; otherwise, build | |
763 | a linked list of all the numbers. */ | |
764 | if (s) { | |
4615d498 | 765 | convert_num (cfile, s, val, base, size); |
63115431 TL |
766 | s += size / 8; |
767 | } else { | |
fdac15d9 | 768 | t = (unsigned char *)dmalloc (strlen (val) + 1, MDL); |
63115431 | 769 | if (!t) |
8ae2d595 | 770 | log_fatal ("no temp space for number."); |
338303a4 TL |
771 | strcpy ((char *)t, val); |
772 | c = cons ((caddr_t)t, c); | |
63115431 TL |
773 | } |
774 | } while (++count != *max); | |
775 | ||
776 | /* If we had to cons up a list, convert it now. */ | |
777 | if (c) { | |
0f750c4f SR |
778 | /* |
779 | * No need to cleanup bufp, to get here we didn't allocate | |
780 | * bufp above | |
781 | */ | |
fdac15d9 | 782 | bufp = (unsigned char *)dmalloc (count * size / 8, MDL); |
63115431 | 783 | if (!bufp) |
1ff8f8ea | 784 | log_fatal ("no space for numeric aggregate."); |
63115431 TL |
785 | s = bufp + count - size / 8; |
786 | *max = count; | |
787 | } | |
788 | while (c) { | |
789 | pair cdr = c -> cdr; | |
4615d498 | 790 | convert_num (cfile, s, (char *)(c -> car), base, size); |
63115431 TL |
791 | s -= size / 8; |
792 | /* Free up temp space. */ | |
fdac15d9 TL |
793 | dfree (c -> car, MDL); |
794 | dfree (c, MDL); | |
63115431 TL |
795 | c = cdr; |
796 | } | |
797 | return bufp; | |
798 | } | |
799 | ||
4615d498 TL |
800 | void convert_num (cfile, buf, str, base, size) |
801 | struct parse *cfile; | |
63115431 | 802 | unsigned char *buf; |
b1b7b521 | 803 | const char *str; |
63115431 | 804 | int base; |
b1b7b521 | 805 | unsigned size; |
63115431 | 806 | { |
28868515 | 807 | const unsigned char *ptr = (const unsigned char *)str; |
63115431 TL |
808 | int negative = 0; |
809 | u_int32_t val = 0; | |
810 | int tval; | |
811 | int max; | |
812 | ||
813 | if (*ptr == '-') { | |
814 | negative = 1; | |
815 | ++ptr; | |
816 | } | |
817 | ||
818 | /* If base wasn't specified, figure it out from the data. */ | |
819 | if (!base) { | |
820 | if (ptr [0] == '0') { | |
821 | if (ptr [1] == 'x') { | |
822 | base = 16; | |
823 | ptr += 2; | |
824 | } else if (isascii (ptr [1]) && isdigit (ptr [1])) { | |
825 | base = 8; | |
826 | ptr += 1; | |
827 | } else { | |
828 | base = 10; | |
829 | } | |
830 | } else { | |
831 | base = 10; | |
832 | } | |
833 | } | |
834 | ||
835 | do { | |
836 | tval = *ptr++; | |
837 | /* XXX assumes ASCII... */ | |
838 | if (tval >= 'a') | |
839 | tval = tval - 'a' + 10; | |
840 | else if (tval >= 'A') | |
841 | tval = tval - 'A' + 10; | |
842 | else if (tval >= '0') | |
843 | tval -= '0'; | |
844 | else { | |
4615d498 | 845 | parse_warn (cfile, "Bogus number: %s.", str); |
63115431 TL |
846 | break; |
847 | } | |
848 | if (tval >= base) { | |
4615d498 TL |
849 | parse_warn (cfile, |
850 | "Bogus number %s: digit %d not in base %d", | |
f420e08c | 851 | str, tval, base); |
63115431 TL |
852 | break; |
853 | } | |
854 | val = val * base + tval; | |
855 | } while (*ptr); | |
856 | ||
857 | if (negative) | |
858 | max = (1 << (size - 1)); | |
859 | else | |
860 | max = (1 << (size - 1)) + ((1 << (size - 1)) - 1); | |
861 | if (val > max) { | |
862 | switch (base) { | |
863 | case 8: | |
4615d498 | 864 | parse_warn (cfile, |
06afba54 | 865 | "%s%lo exceeds max (%d) for precision.", |
b3d594dd TL |
866 | negative ? "-" : "", |
867 | (unsigned long)val, max); | |
63115431 TL |
868 | break; |
869 | case 16: | |
4615d498 | 870 | parse_warn (cfile, |
06afba54 | 871 | "%s%lx exceeds max (%d) for precision.", |
b3d594dd TL |
872 | negative ? "-" : "", |
873 | (unsigned long)val, max); | |
63115431 TL |
874 | break; |
875 | default: | |
4615d498 | 876 | parse_warn (cfile, |
06afba54 | 877 | "%s%lu exceeds max (%d) for precision.", |
b3d594dd TL |
878 | negative ? "-" : "", |
879 | (unsigned long)val, max); | |
63115431 TL |
880 | break; |
881 | } | |
882 | } | |
883 | ||
884 | if (negative) { | |
885 | switch (size) { | |
886 | case 8: | |
887 | *buf = -(unsigned long)val; | |
888 | break; | |
889 | case 16: | |
b1b7b521 | 890 | putShort (buf, -(long)val); |
63115431 TL |
891 | break; |
892 | case 32: | |
b1b7b521 | 893 | putLong (buf, -(long)val); |
63115431 TL |
894 | break; |
895 | default: | |
4615d498 TL |
896 | parse_warn (cfile, |
897 | "Unexpected integer size: %d\n", size); | |
63115431 TL |
898 | break; |
899 | } | |
900 | } else { | |
901 | switch (size) { | |
902 | case 8: | |
903 | *buf = (u_int8_t)val; | |
904 | break; | |
905 | case 16: | |
906 | putUShort (buf, (u_int16_t)val); | |
907 | break; | |
908 | case 32: | |
909 | putULong (buf, val); | |
910 | break; | |
911 | default: | |
4615d498 TL |
912 | parse_warn (cfile, |
913 | "Unexpected integer size: %d\n", size); | |
63115431 TL |
914 | break; |
915 | } | |
916 | } | |
917 | } | |
918 | ||
be6be08d TL |
919 | /* |
920 | * date :== NUMBER NUMBER SLASH NUMBER SLASH NUMBER | |
83d409ae | 921 | * NUMBER COLON NUMBER COLON NUMBER | |
a82abfc7 | 922 | * NUMBER NUMBER SLASH NUMBER SLASH NUMBER |
83d409ae SR |
923 | * NUMBER COLON NUMBER COLON NUMBER NUMBER | |
924 | * EPOCH NUMBER | | |
be1ee858 | 925 | * NEVER |
be6be08d | 926 | * |
b1d3778c | 927 | * Dates are stored in UTC or with a timezone offset; first number is day |
a82abfc7 TL |
928 | * of week; next is year/month/day; next is hours:minutes:seconds on a |
929 | * 24-hour clock, followed by the timezone offset in seconds, which is | |
930 | * optional. | |
be6be08d | 931 | */ |
63115431 | 932 | |
83d409ae SR |
933 | /* |
934 | * just parse the date | |
935 | * any trailing semi must be consumed by the caller of this routine | |
936 | */ | |
b1d3778c DH |
937 | TIME |
938 | parse_date_core(cfile) | |
4615d498 | 939 | struct parse *cfile; |
63115431 | 940 | { |
63115431 | 941 | int guess; |
dd9237c3 | 942 | int tzoff, year, mon, mday, hour, min, sec; |
b1b7b521 | 943 | const char *val; |
02a015fb | 944 | enum dhcp_token token; |
83d409ae SR |
945 | static int months[11] = { 31, 59, 90, 120, 151, 181, |
946 | 212, 243, 273, 304, 334 }; | |
63115431 | 947 | |
83d409ae SR |
948 | /* "never", "epoch" or day of week */ |
949 | token = peek_token(&val, NULL, cfile); | |
be1ee858 | 950 | if (token == NEVER) { |
83d409ae SR |
951 | token = next_token(&val, NULL, cfile); /* consume NEVER */ |
952 | return(MAX_TIME); | |
be1ee858 TL |
953 | } |
954 | ||
5e864416 DH |
955 | /* This indicates 'local' time format. */ |
956 | if (token == EPOCH) { | |
83d409ae SR |
957 | token = next_token(&val, NULL, cfile); /* consume EPOCH */ |
958 | token = peek_token(&val, NULL, cfile); | |
5e864416 DH |
959 | |
960 | if (token != NUMBER) { | |
5e864416 | 961 | if (token != SEMI) |
83d409ae SR |
962 | token = next_token(&val, NULL, cfile); |
963 | parse_warn(cfile, "Seconds since epoch expected."); | |
964 | return((TIME)0); | |
5e864416 DH |
965 | } |
966 | ||
83d409ae | 967 | token = next_token(&val, NULL, cfile); /* consume number */ |
5e864416 DH |
968 | guess = atoi(val); |
969 | ||
83d409ae | 970 | return((TIME)guess); |
5e864416 DH |
971 | } |
972 | ||
63115431 | 973 | if (token != NUMBER) { |
63115431 | 974 | if (token != SEMI) |
83d409ae SR |
975 | token = next_token(&val, NULL, cfile); |
976 | parse_warn(cfile, "numeric day of week expected."); | |
977 | return((TIME)0); | |
63115431 | 978 | } |
83d409ae | 979 | token = next_token(&val, NULL, cfile); /* consume day of week */ |
dd9237c3 | 980 | /* we are not using this for anything */ |
63115431 TL |
981 | |
982 | /* Year... */ | |
83d409ae | 983 | token = peek_token(&val, NULL, cfile); |
63115431 | 984 | if (token != NUMBER) { |
63115431 | 985 | if (token != SEMI) |
83d409ae SR |
986 | token = next_token(&val, NULL, cfile); |
987 | parse_warn(cfile, "numeric year expected."); | |
988 | return((TIME)0); | |
63115431 | 989 | } |
83d409ae | 990 | token = next_token(&val, NULL, cfile); /* consume year */ |
edca2b1a TL |
991 | |
992 | /* Note: the following is not a Y2K bug - it's a Y1.9K bug. Until | |
993 | somebody invents a time machine, I think we can safely disregard | |
994 | it. This actually works around a stupid Y2K bug that was present | |
995 | in a very early beta release of dhcpd. */ | |
83d409ae | 996 | year = atoi(val); |
a82abfc7 TL |
997 | if (year > 1900) |
998 | year -= 1900; | |
63115431 | 999 | |
c57db45c | 1000 | /* Slash separating year from month... */ |
83d409ae | 1001 | token = peek_token(&val, NULL, cfile); |
63115431 | 1002 | if (token != SLASH) { |
63115431 | 1003 | if (token != SEMI) |
83d409ae SR |
1004 | token = next_token(&val, NULL, cfile); |
1005 | parse_warn(cfile, | |
1006 | "expected slash separating year from month."); | |
1007 | return((TIME)0); | |
63115431 | 1008 | } |
83d409ae | 1009 | token = next_token(&val, NULL, cfile); /* consume SLASH */ |
63115431 TL |
1010 | |
1011 | /* Month... */ | |
83d409ae | 1012 | token = peek_token(&val, NULL, cfile); |
63115431 | 1013 | if (token != NUMBER) { |
63115431 | 1014 | if (token != SEMI) |
83d409ae SR |
1015 | token = next_token(&val, NULL, cfile); |
1016 | parse_warn(cfile, "numeric month expected."); | |
1017 | return((TIME)0); | |
63115431 | 1018 | } |
83d409ae SR |
1019 | token = next_token(&val, NULL, cfile); /* consume month */ |
1020 | mon = atoi(val) - 1; | |
63115431 | 1021 | |
c57db45c | 1022 | /* Slash separating month from day... */ |
83d409ae | 1023 | token = peek_token(&val, NULL, cfile); |
63115431 | 1024 | if (token != SLASH) { |
63115431 | 1025 | if (token != SEMI) |
83d409ae SR |
1026 | token = next_token(&val, NULL, cfile); |
1027 | parse_warn(cfile, | |
1028 | "expected slash separating month from day."); | |
1029 | return((TIME)0); | |
63115431 | 1030 | } |
83d409ae | 1031 | token = next_token(&val, NULL, cfile); /* consume SLASH */ |
63115431 | 1032 | |
98311e4b | 1033 | /* Day of month... */ |
83d409ae | 1034 | token = peek_token(&val, NULL, cfile); |
63115431 | 1035 | if (token != NUMBER) { |
63115431 | 1036 | if (token != SEMI) |
83d409ae SR |
1037 | token = next_token(&val, NULL, cfile); |
1038 | parse_warn(cfile, "numeric day of month expected."); | |
1039 | return((TIME)0); | |
63115431 | 1040 | } |
83d409ae SR |
1041 | token = next_token(&val, NULL, cfile); /* consume day of month */ |
1042 | mday = atoi(val); | |
63115431 TL |
1043 | |
1044 | /* Hour... */ | |
83d409ae | 1045 | token = peek_token(&val, NULL, cfile); |
63115431 | 1046 | if (token != NUMBER) { |
63115431 | 1047 | if (token != SEMI) |
83d409ae SR |
1048 | token = next_token(&val, NULL, cfile); |
1049 | parse_warn(cfile, "numeric hour expected."); | |
1050 | return((TIME)0); | |
63115431 | 1051 | } |
83d409ae SR |
1052 | token = next_token(&val, NULL, cfile); /* consume hour */ |
1053 | hour = atoi(val); | |
63115431 | 1054 | |
c57db45c | 1055 | /* Colon separating hour from minute... */ |
83d409ae | 1056 | token = peek_token(&val, NULL, cfile); |
63115431 | 1057 | if (token != COLON) { |
63115431 | 1058 | if (token != SEMI) |
83d409ae SR |
1059 | token = next_token(&val, NULL, cfile); |
1060 | parse_warn(cfile, | |
1061 | "expected colon separating hour from minute."); | |
1062 | return((TIME)0); | |
63115431 | 1063 | } |
83d409ae | 1064 | token = next_token(&val, NULL, cfile); /* consume colon */ |
63115431 TL |
1065 | |
1066 | /* Minute... */ | |
83d409ae | 1067 | token = peek_token(&val, NULL, cfile); |
63115431 | 1068 | if (token != NUMBER) { |
63115431 | 1069 | if (token != SEMI) |
83d409ae SR |
1070 | token = next_token(&val, NULL, cfile); |
1071 | parse_warn(cfile, "numeric minute expected."); | |
1072 | return((TIME)0); | |
63115431 | 1073 | } |
83d409ae SR |
1074 | token = next_token(&val, NULL, cfile); /* consume minute */ |
1075 | min = atoi(val); | |
63115431 | 1076 | |
c57db45c | 1077 | /* Colon separating minute from second... */ |
83d409ae | 1078 | token = peek_token(&val, NULL, cfile); |
63115431 | 1079 | if (token != COLON) { |
63115431 | 1080 | if (token != SEMI) |
83d409ae SR |
1081 | token = next_token(&val, NULL, cfile); |
1082 | parse_warn(cfile, | |
1083 | "expected colon separating minute from second."); | |
1084 | return((TIME)0); | |
63115431 | 1085 | } |
83d409ae | 1086 | token = next_token(&val, NULL, cfile); /* consume colon */ |
63115431 | 1087 | |
67674ffb | 1088 | /* Second... */ |
83d409ae | 1089 | token = peek_token(&val, NULL, cfile); |
63115431 | 1090 | if (token != NUMBER) { |
63115431 | 1091 | if (token != SEMI) |
83d409ae SR |
1092 | token = next_token(&val, NULL, cfile); |
1093 | parse_warn(cfile, "numeric second expected."); | |
1094 | return((TIME)0); | |
63115431 | 1095 | } |
83d409ae SR |
1096 | token = next_token(&val, NULL, cfile); /* consume second */ |
1097 | sec = atoi(val); | |
63115431 | 1098 | |
83d409ae SR |
1099 | tzoff = 0; |
1100 | token = peek_token(&val, NULL, cfile); | |
a82abfc7 | 1101 | if (token == NUMBER) { |
83d409ae SR |
1102 | token = next_token(&val, NULL, cfile); /* consume tzoff */ |
1103 | tzoff = atoi(val); | |
1104 | } else if (token != SEMI) { | |
1105 | token = next_token(&val, NULL, cfile); | |
1106 | parse_warn(cfile, | |
1107 | "Time zone offset or semicolon expected."); | |
1108 | return((TIME)0); | |
1109 | } | |
63115431 | 1110 | |
63115431 | 1111 | /* Guess the time value... */ |
a82abfc7 TL |
1112 | guess = ((((((365 * (year - 70) + /* Days in years since '70 */ |
1113 | (year - 69) / 4 + /* Leap days since '70 */ | |
1114 | (mon /* Days in months this year */ | |
1115 | ? months [mon - 1] | |
63115431 | 1116 | : 0) + |
a82abfc7 TL |
1117 | (mon > 1 && /* Leap day this year */ |
1118 | !((year - 72) & 3)) + | |
1119 | mday - 1) * 24) + /* Day of month */ | |
1120 | hour) * 60) + | |
1121 | min) * 60) + sec + tzoff; | |
63115431 TL |
1122 | |
1123 | /* This guess could be wrong because of leap seconds or other | |
1124 | weirdness we don't know about that the system does. For | |
1125 | now, we're just going to accept the guess, but at some point | |
1126 | it might be nice to do a successive approximation here to | |
1127 | get an exact value. Even if the error is small, if the | |
1128 | server is restarted frequently (and thus the lease database | |
1129 | is reread), the error could accumulate into something | |
1130 | significant. */ | |
1131 | ||
83d409ae | 1132 | return((TIME)guess); |
63115431 | 1133 | } |
4761e04b | 1134 | |
83d409ae SR |
1135 | /* |
1136 | * Wrapper to consume the semicolon after the date | |
1137 | * :== date semi | |
1138 | */ | |
1139 | ||
b1d3778c DH |
1140 | TIME |
1141 | parse_date(cfile) | |
1142 | struct parse *cfile; | |
1143 | { | |
83d409ae | 1144 | TIME guess; |
b1d3778c DH |
1145 | guess = parse_date_core(cfile); |
1146 | ||
1147 | /* Make sure the date ends in a semicolon... */ | |
1148 | if (!parse_semi(cfile)) | |
83d409ae SR |
1149 | return((TIME)0); |
1150 | return(guess); | |
b1d3778c DH |
1151 | } |
1152 | ||
1153 | ||
1154 | ||
be6be08d TL |
1155 | /* |
1156 | * option-name :== IDENTIFIER | | |
1157 | IDENTIFIER . IDENTIFIER | |
1158 | */ | |
1159 | ||
f7fdb216 DH |
1160 | isc_result_t |
1161 | parse_option_name (cfile, allocate, known, opt) | |
4615d498 | 1162 | struct parse *cfile; |
6b4b0ec7 | 1163 | int allocate; |
b1b7b521 | 1164 | int *known; |
f7fdb216 | 1165 | struct option **opt; |
4761e04b | 1166 | { |
b1b7b521 | 1167 | const char *val; |
02a015fb | 1168 | enum dhcp_token token; |
6b4b0ec7 | 1169 | char *uname; |
4761e04b TL |
1170 | struct universe *universe; |
1171 | struct option *option; | |
d5341d9b | 1172 | unsigned code; |
4761e04b | 1173 | |
f7fdb216 | 1174 | if (opt == NULL) |
98bf1607 | 1175 | return DHCP_R_INVALIDARG; |
f7fdb216 | 1176 | |
b3519f23 | 1177 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b | 1178 | if (!is_identifier (token)) { |
4615d498 TL |
1179 | parse_warn (cfile, |
1180 | "expecting identifier after option keyword."); | |
4761e04b TL |
1181 | if (token != SEMI) |
1182 | skip_to_semi (cfile); | |
98bf1607 | 1183 | return DHCP_R_BADPARSE; |
4761e04b | 1184 | } |
fdac15d9 | 1185 | uname = dmalloc (strlen (val) + 1, MDL); |
6b4b0ec7 TL |
1186 | if (!uname) |
1187 | log_fatal ("no memory for uname information."); | |
1188 | strcpy (uname, val); | |
b3519f23 | 1189 | token = peek_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
1190 | if (token == DOT) { |
1191 | /* Go ahead and take the DOT token... */ | |
b3519f23 | 1192 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
1193 | |
1194 | /* The next token should be an identifier... */ | |
b3519f23 | 1195 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b | 1196 | if (!is_identifier (token)) { |
4615d498 | 1197 | parse_warn (cfile, "expecting identifier after '.'"); |
4761e04b TL |
1198 | if (token != SEMI) |
1199 | skip_to_semi (cfile); | |
98bf1607 | 1200 | return DHCP_R_BADPARSE; |
4761e04b TL |
1201 | } |
1202 | ||
1203 | /* Look up the option name hash table for the specified | |
6b4b0ec7 | 1204 | uname. */ |
20916cae TL |
1205 | universe = (struct universe *)0; |
1206 | if (!universe_hash_lookup (&universe, universe_hash, | |
1207 | uname, 0, MDL)) { | |
4615d498 | 1208 | parse_warn (cfile, "no option space named %s.", uname); |
4761e04b | 1209 | skip_to_semi (cfile); |
f7fdb216 | 1210 | return ISC_R_NOTFOUND; |
4761e04b TL |
1211 | } |
1212 | } else { | |
1213 | /* Use the default hash table, which contains all the | |
1214 | standard dhcp option names. */ | |
6b4b0ec7 | 1215 | val = uname; |
4761e04b TL |
1216 | universe = &dhcp_universe; |
1217 | } | |
1218 | ||
1219 | /* Look up the actual option info... */ | |
f7fdb216 DH |
1220 | option_name_hash_lookup(opt, universe->name_hash, val, 0, MDL); |
1221 | option = *opt; | |
4761e04b TL |
1222 | |
1223 | /* If we didn't get an option structure, it's an undefined option. */ | |
b1b7b521 | 1224 | if (option) { |
9a7f6fcd TL |
1225 | if (known) |
1226 | *known = 1; | |
d5341d9b SK |
1227 | /* If the option name is of the form unknown-[decimal], use |
1228 | * the trailing decimal value to find the option definition. | |
1229 | * If there is no definition, construct one. This is to | |
1230 | * support legacy use of unknown options in config files or | |
1231 | * lease databases. | |
1232 | */ | |
1233 | } else if (strncasecmp(val, "unknown-", 8) == 0) { | |
1234 | code = atoi(val+8); | |
f7fdb216 | 1235 | |
d5341d9b SK |
1236 | /* Option code 0 is always illegal for us, thanks |
1237 | * to the option decoder. | |
1238 | */ | |
1239 | if (code == 0 || code == universe->end) { | |
1240 | parse_warn(cfile, "Option codes 0 and %u are illegal " | |
1241 | "in the %s space.", universe->end, | |
1242 | universe->name); | |
1243 | skip_to_semi(cfile); | |
f7fdb216 | 1244 | dfree(uname, MDL); |
d5341d9b | 1245 | return ISC_R_FAILURE; |
6b4b0ec7 | 1246 | } |
d5341d9b SK |
1247 | |
1248 | /* It's odd to think of unknown option codes as | |
1249 | * being known, but this means we know what the | |
1250 | * parsed name is talking about. | |
1251 | */ | |
1252 | if (known) | |
1253 | *known = 1; | |
1254 | ||
1255 | option_code_hash_lookup(opt, universe->code_hash, | |
1256 | &code, 0, MDL); | |
1257 | option = *opt; | |
1258 | ||
1259 | /* If we did not find an option of that code, | |
1260 | * manufacture an unknown-xxx option definition. | |
1261 | * Its single reference will ensure that it is | |
1262 | * deleted once the option is recycled out of | |
1263 | * existence (by the parent). | |
1264 | */ | |
1265 | if (option == NULL) { | |
1266 | option = new_option(val, MDL); | |
1267 | option->universe = universe; | |
1268 | option->code = code; | |
399d3dbe | 1269 | option->format = default_option_format; |
d5341d9b SK |
1270 | option_reference(opt, option, MDL); |
1271 | } else | |
1272 | log_info("option %s has been redefined as option %s. " | |
1273 | "Please update your configs if neccessary.", | |
1274 | val, option->name); | |
1275 | /* If we've been told to allocate, that means that this | |
1276 | * (might) be an option code definition, so we'll create | |
1277 | * an option structure and return it for the parent to | |
1278 | * decide. | |
1279 | */ | |
1280 | } else if (allocate) { | |
1281 | option = new_option(val, MDL); | |
1282 | option -> universe = universe; | |
1283 | option_reference(opt, option, MDL); | |
1284 | } else { | |
1285 | parse_warn(cfile, "no option named %s in space %s", | |
1286 | val, universe->name); | |
4761e04b | 1287 | skip_to_semi (cfile); |
f7fdb216 DH |
1288 | dfree(uname, MDL); |
1289 | return ISC_R_NOTFOUND; | |
4761e04b TL |
1290 | } |
1291 | ||
1292 | /* Free the initial identifier token. */ | |
fdac15d9 | 1293 | dfree (uname, MDL); |
f7fdb216 | 1294 | return ISC_R_SUCCESS; |
4761e04b TL |
1295 | } |
1296 | ||
f7fdb216 DH |
1297 | /* IDENTIFIER [WIDTHS] SEMI |
1298 | * WIDTHS ~= LENGTH WIDTH NUMBER | |
1299 | * CODE WIDTH NUMBER | |
1300 | */ | |
52c9d530 TL |
1301 | |
1302 | void parse_option_space_decl (cfile) | |
4615d498 | 1303 | struct parse *cfile; |
52c9d530 TL |
1304 | { |
1305 | int token; | |
b1b7b521 | 1306 | const char *val; |
52c9d530 | 1307 | struct universe **ua, *nu; |
f7fdb216 DH |
1308 | char *nu_name; |
1309 | int tsize=1, lsize=1, hsize = 0; | |
52c9d530 | 1310 | |
b3519f23 TL |
1311 | next_token (&val, (unsigned *)0, cfile); /* Discard the SPACE token, |
1312 | which was checked by the | |
1313 | caller. */ | |
1314 | token = next_token (&val, (unsigned *)0, cfile); | |
52c9d530 | 1315 | if (!is_identifier (token)) { |
4615d498 | 1316 | parse_warn (cfile, "expecting identifier."); |
52c9d530 TL |
1317 | skip_to_semi (cfile); |
1318 | return; | |
1319 | } | |
4bd8800e | 1320 | nu = new_universe (MDL); |
52c9d530 TL |
1321 | if (!nu) |
1322 | log_fatal ("No memory for new option space."); | |
1323 | ||
1324 | /* Set up the server option universe... */ | |
f7fdb216 DH |
1325 | nu_name = dmalloc (strlen (val) + 1, MDL); |
1326 | if (!nu_name) | |
52c9d530 | 1327 | log_fatal ("No memory for new option space name."); |
f7fdb216 DH |
1328 | strcpy (nu_name, val); |
1329 | nu -> name = nu_name; | |
1330 | ||
1331 | do { | |
1332 | token = next_token(&val, NULL, cfile); | |
1333 | switch(token) { | |
1334 | case SEMI: | |
1335 | break; | |
1336 | ||
1337 | case CODE: | |
1338 | token = next_token(&val, NULL, cfile); | |
1339 | if (token != WIDTH) { | |
1340 | parse_warn(cfile, "expecting width token."); | |
1341 | goto bad; | |
1342 | } | |
1343 | ||
1344 | token = next_token(&val, NULL, cfile); | |
1345 | if (token != NUMBER) { | |
1346 | parse_warn(cfile, "expecting number 1, 2, 4."); | |
1347 | goto bad; | |
1348 | } | |
1349 | ||
1350 | tsize = atoi(val); | |
1351 | ||
1352 | ||
1353 | switch (tsize) { | |
1354 | case 1: | |
1355 | if (!hsize) | |
1356 | hsize = BYTE_NAME_HASH_SIZE; | |
1357 | break; | |
1358 | case 2: | |
1359 | if (!hsize) | |
1360 | hsize = WORD_NAME_HASH_SIZE; | |
1361 | break; | |
1362 | case 4: | |
1363 | if (!hsize) | |
1364 | hsize = QUAD_NAME_HASH_SIZE; | |
1365 | break; | |
1366 | default: | |
1367 | parse_warn(cfile, "invalid code width (%d), " | |
1368 | "expecting a 1, 2 or 4.", | |
d19e2cf7 | 1369 | tsize); |
f7fdb216 DH |
1370 | goto bad; |
1371 | } | |
1372 | break; | |
1373 | ||
1374 | case LENGTH: | |
1375 | token = next_token(&val, NULL, cfile); | |
1376 | if (token != WIDTH) { | |
1377 | parse_warn(cfile, "expecting width token."); | |
1378 | goto bad; | |
1379 | } | |
1380 | ||
1381 | token = next_token(&val, NULL, cfile); | |
1382 | if (token != NUMBER) { | |
1383 | parse_warn(cfile, "expecting number 1 or 2."); | |
1384 | goto bad; | |
1385 | } | |
1386 | ||
1387 | lsize = atoi(val); | |
1388 | if (lsize != 1 && lsize != 2) { | |
1389 | parse_warn(cfile, "invalid length width (%d) " | |
d19e2cf7 | 1390 | "expecting 1 or 2.", lsize); |
f7fdb216 DH |
1391 | goto bad; |
1392 | } | |
1393 | ||
1394 | break; | |
1395 | ||
1396 | case HASH: | |
1397 | token = next_token(&val, NULL, cfile); | |
1398 | if (token != SIZE) { | |
1399 | parse_warn(cfile, "expecting size token."); | |
1400 | goto bad; | |
1401 | } | |
1402 | ||
1403 | token = next_token(&val, NULL, cfile); | |
1404 | if (token != NUMBER) { | |
1405 | parse_warn(cfile, "expecting a 10base number"); | |
1406 | goto bad; | |
1407 | } | |
1408 | ||
1409 | /* (2^31)-1 is the highest Mersenne prime we should | |
1410 | * probably allow... | |
1411 | */ | |
1412 | hsize = atoi(val); | |
1413 | if (hsize < 0 || hsize > 0x7FFFFFFF) { | |
1414 | parse_warn(cfile, "invalid hash length: %d", | |
1415 | hsize); | |
1416 | goto bad; | |
1417 | } | |
1418 | ||
1419 | break; | |
1420 | ||
1421 | default: | |
1422 | parse_warn(cfile, "Unexpected token."); | |
1423 | } | |
1424 | } while (token != SEMI); | |
1425 | ||
1426 | if (!hsize) | |
1427 | hsize = DEFAULT_SPACE_HASH_SIZE; | |
1428 | ||
52c9d530 | 1429 | nu -> lookup_func = lookup_hashed_option; |
f7fdb216 | 1430 | nu -> option_state_dereference = hashed_option_state_dereference; |
f769d5ac | 1431 | nu -> foreach = hashed_option_space_foreach; |
52c9d530 TL |
1432 | nu -> save_func = save_hashed_option; |
1433 | nu -> delete_func = delete_hashed_option; | |
1434 | nu -> encapsulate = hashed_option_space_encapsulate; | |
962dc4ab | 1435 | nu -> decode = parse_option_buffer; |
f7fdb216 DH |
1436 | nu -> length_size = lsize; |
1437 | nu -> tag_size = tsize; | |
1438 | switch(tsize) { | |
1439 | case 1: | |
1440 | nu->get_tag = getUChar; | |
1441 | nu->store_tag = putUChar; | |
1442 | break; | |
1443 | case 2: | |
1444 | nu->get_tag = getUShort; | |
1445 | nu->store_tag = putUShort; | |
1446 | break; | |
1447 | case 4: | |
1448 | nu->get_tag = getULong; | |
1449 | nu->store_tag = putULong; | |
1450 | break; | |
1451 | default: | |
1452 | log_fatal("Impossible condition at %s:%d.", MDL); | |
1453 | } | |
1454 | switch(lsize) { | |
98bd7ca0 DH |
1455 | case 0: |
1456 | nu->get_length = NULL; | |
1457 | nu->store_length = NULL; | |
1458 | break; | |
f7fdb216 DH |
1459 | case 1: |
1460 | nu->get_length = getUChar; | |
1461 | nu->store_length = putUChar; | |
1462 | break; | |
1463 | case 2: | |
1464 | nu->get_length = getUShort; | |
1465 | nu->store_length = putUShort; | |
1466 | break; | |
1467 | default: | |
1468 | log_fatal("Impossible condition at %s:%d.", MDL); | |
1469 | } | |
52c9d530 TL |
1470 | nu -> index = universe_count++; |
1471 | if (nu -> index >= universe_max) { | |
fdac15d9 | 1472 | ua = dmalloc (universe_max * 2 * sizeof *ua, MDL); |
52c9d530 TL |
1473 | if (!ua) |
1474 | log_fatal ("No memory to expand option space array."); | |
1475 | memcpy (ua, universes, universe_max * sizeof *ua); | |
1476 | universe_max *= 2; | |
fdac15d9 | 1477 | dfree (universes, MDL); |
52c9d530 TL |
1478 | universes = ua; |
1479 | } | |
1480 | universes [nu -> index] = nu; | |
f7fdb216 DH |
1481 | if (!option_name_new_hash(&nu->name_hash, hsize, MDL) || |
1482 | !option_code_new_hash(&nu->code_hash, hsize, MDL)) | |
1483 | log_fatal("Can't allocate %s option hash table.", nu->name); | |
20916cae | 1484 | universe_hash_add (universe_hash, nu -> name, 0, nu, MDL); |
f7fdb216 DH |
1485 | return; |
1486 | ||
1487 | bad: | |
1488 | dfree(nu_name, MDL); | |
1489 | dfree(nu, MDL); | |
52c9d530 TL |
1490 | } |
1491 | ||
6b4b0ec7 TL |
1492 | /* This is faked up to look good right now. Ideally, this should do a |
1493 | recursive parse and allow arbitrary data structure definitions, but for | |
1494 | now it just allows you to specify a single type, an array of single types, | |
1495 | a sequence of types, or an array of sequences of types. | |
1496 | ||
1497 | ocd :== NUMBER EQUALS ocsd SEMI | |
1498 | ||
1499 | ocsd :== ocsd_type | | |
1500 | ocsd_type_sequence | | |
d8fc5060 | 1501 | ARRAY OF ocsd_simple_type_sequence |
6b4b0ec7 TL |
1502 | |
1503 | ocsd_type_sequence :== LBRACE ocsd_types RBRACE | |
1504 | ||
d8fc5060 TL |
1505 | ocsd_simple_type_sequence :== LBRACE ocsd_simple_types RBRACE |
1506 | ||
1507 | ocsd_types :== ocsd_type | | |
1508 | ocsd_types ocsd_type | |
1509 | ||
1510 | ocsd_type :== ocsd_simple_type | | |
1511 | ARRAY OF ocsd_simple_type | |
1512 | ||
1513 | ocsd_simple_types :== ocsd_simple_type | | |
1514 | ocsd_simple_types ocsd_simple_type | |
1515 | ||
1516 | ocsd_simple_type :== BOOLEAN | | |
1517 | INTEGER NUMBER | | |
1518 | SIGNED INTEGER NUMBER | | |
1519 | UNSIGNED INTEGER NUMBER | | |
1520 | IP-ADDRESS | | |
1521 | TEXT | | |
962dc4ab TL |
1522 | STRING | |
1523 | ENCAPSULATE identifier */ | |
6b4b0ec7 TL |
1524 | |
1525 | int parse_option_code_definition (cfile, option) | |
4615d498 | 1526 | struct parse *cfile; |
6b4b0ec7 TL |
1527 | struct option *option; |
1528 | { | |
b1b7b521 | 1529 | const char *val; |
6b4b0ec7 | 1530 | enum dhcp_token token; |
f7fdb216 | 1531 | struct option *oldopt; |
b1b7b521 | 1532 | unsigned arrayp = 0; |
6b4b0ec7 TL |
1533 | int recordp = 0; |
1534 | int no_more_in_record = 0; | |
1535 | char tokbuf [128]; | |
b1b7b521 | 1536 | unsigned tokix = 0; |
6b4b0ec7 | 1537 | char type; |
6b4b0ec7 | 1538 | int is_signed; |
b1b7b521 | 1539 | char *s; |
962dc4ab | 1540 | int has_encapsulation = 0; |
98bd7ca0 | 1541 | struct universe *encapsulated; |
6b4b0ec7 TL |
1542 | |
1543 | /* Parse the option code. */ | |
b3519f23 | 1544 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1545 | if (token != NUMBER) { |
4615d498 | 1546 | parse_warn (cfile, "expecting option code number."); |
6b4b0ec7 TL |
1547 | skip_to_semi (cfile); |
1548 | return 0; | |
1549 | } | |
1550 | option -> code = atoi (val); | |
1551 | ||
b3519f23 | 1552 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1553 | if (token != EQUAL) { |
4615d498 | 1554 | parse_warn (cfile, "expecting \"=\""); |
6b4b0ec7 TL |
1555 | skip_to_semi (cfile); |
1556 | return 0; | |
1557 | } | |
1558 | ||
1559 | /* See if this is an array. */ | |
b3519f23 | 1560 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1561 | if (token == ARRAY) { |
b3519f23 | 1562 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1563 | if (token != OF) { |
4615d498 | 1564 | parse_warn (cfile, "expecting \"of\"."); |
6b4b0ec7 TL |
1565 | skip_to_semi (cfile); |
1566 | return 0; | |
1567 | } | |
1568 | arrayp = 1; | |
b3519f23 | 1569 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 TL |
1570 | } |
1571 | ||
1572 | if (token == LBRACE) { | |
1573 | recordp = 1; | |
b3519f23 | 1574 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 TL |
1575 | } |
1576 | ||
1577 | /* At this point we're expecting a data type. */ | |
1578 | next_type: | |
962dc4ab TL |
1579 | if (has_encapsulation) { |
1580 | parse_warn (cfile, | |
1581 | "encapsulate must always be the last item."); | |
1582 | skip_to_semi (cfile); | |
1583 | return 0; | |
1584 | } | |
1585 | ||
6b4b0ec7 | 1586 | switch (token) { |
d8fc5060 TL |
1587 | case ARRAY: |
1588 | if (arrayp) { | |
1589 | parse_warn (cfile, "no nested arrays."); | |
1590 | skip_to_rbrace (cfile, recordp); | |
1591 | if (recordp) | |
1592 | skip_to_semi (cfile); | |
1593 | return 0; | |
1594 | } | |
b3519f23 | 1595 | token = next_token (&val, (unsigned *)0, cfile); |
d8fc5060 TL |
1596 | if (token != OF) { |
1597 | parse_warn (cfile, "expecting \"of\"."); | |
1598 | skip_to_semi (cfile); | |
1599 | return 0; | |
1600 | } | |
1601 | arrayp = recordp + 1; | |
b3519f23 | 1602 | token = next_token (&val, (unsigned *)0, cfile); |
d8fc5060 TL |
1603 | if ((recordp) && (token == LBRACE)) { |
1604 | parse_warn (cfile, | |
1605 | "only uniform array inside record."); | |
1606 | skip_to_rbrace (cfile, recordp + 1); | |
1607 | skip_to_semi (cfile); | |
1608 | return 0; | |
1609 | } | |
1610 | goto next_type; | |
6b4b0ec7 TL |
1611 | case BOOLEAN: |
1612 | type = 'f'; | |
1613 | break; | |
1614 | case INTEGER: | |
1615 | is_signed = 1; | |
1616 | parse_integer: | |
b3519f23 | 1617 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1618 | if (token != NUMBER) { |
4615d498 | 1619 | parse_warn (cfile, "expecting number."); |
6b4b0ec7 TL |
1620 | skip_to_rbrace (cfile, recordp); |
1621 | if (recordp) | |
1622 | skip_to_semi (cfile); | |
1623 | return 0; | |
1624 | } | |
1625 | switch (atoi (val)) { | |
1626 | case 8: | |
1627 | type = is_signed ? 'b' : 'B'; | |
1628 | break; | |
1629 | case 16: | |
1630 | type = is_signed ? 's' : 'S'; | |
1631 | break; | |
1632 | case 32: | |
1633 | type = is_signed ? 'l' : 'L'; | |
1634 | break; | |
1635 | default: | |
4615d498 TL |
1636 | parse_warn (cfile, |
1637 | "%s bit precision is not supported.", val); | |
6b4b0ec7 TL |
1638 | skip_to_rbrace (cfile, recordp); |
1639 | if (recordp) | |
1640 | skip_to_semi (cfile); | |
1641 | return 0; | |
1642 | } | |
1643 | break; | |
1644 | case SIGNED: | |
1645 | is_signed = 1; | |
1646 | parse_signed: | |
b3519f23 | 1647 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1648 | if (token != INTEGER) { |
4615d498 | 1649 | parse_warn (cfile, "expecting \"integer\" keyword."); |
6b4b0ec7 TL |
1650 | skip_to_rbrace (cfile, recordp); |
1651 | if (recordp) | |
1652 | skip_to_semi (cfile); | |
1653 | return 0; | |
1654 | } | |
1655 | goto parse_integer; | |
1656 | case UNSIGNED: | |
1657 | is_signed = 0; | |
1658 | goto parse_signed; | |
1659 | ||
1660 | case IP_ADDRESS: | |
1661 | type = 'I'; | |
1662 | break; | |
98bd7ca0 DH |
1663 | case IP6_ADDRESS: |
1664 | type = '6'; | |
1665 | break; | |
d758ad8c TL |
1666 | case DOMAIN_NAME: |
1667 | type = 'd'; | |
1668 | goto no_arrays; | |
dba5803b | 1669 | case DOMAIN_LIST: |
98bd7ca0 DH |
1670 | /* Consume optional compression indicator. */ |
1671 | token = peek_token(&val, NULL, cfile); | |
1672 | if (token == COMPRESSED) { | |
1673 | token = next_token(&val, NULL, cfile); | |
1674 | tokbuf[tokix++] = 'D'; | |
1675 | type = 'c'; | |
1676 | } else | |
1677 | type = 'D'; | |
dba5803b | 1678 | goto no_arrays; |
6b4b0ec7 TL |
1679 | case TEXT: |
1680 | type = 't'; | |
1681 | no_arrays: | |
1682 | if (arrayp) { | |
4615d498 | 1683 | parse_warn (cfile, "arrays of text strings not %s", |
6b4b0ec7 TL |
1684 | "yet supported."); |
1685 | skip_to_rbrace (cfile, recordp); | |
1686 | if (recordp) | |
1687 | skip_to_semi (cfile); | |
1688 | return 0; | |
1689 | } | |
1690 | no_more_in_record = 1; | |
1691 | break; | |
ef91cb39 | 1692 | case STRING_TOKEN: |
6b4b0ec7 TL |
1693 | type = 'X'; |
1694 | goto no_arrays; | |
1695 | ||
962dc4ab | 1696 | case ENCAPSULATE: |
b3519f23 | 1697 | token = next_token (&val, (unsigned *)0, cfile); |
962dc4ab TL |
1698 | if (!is_identifier (token)) { |
1699 | parse_warn (cfile, | |
1700 | "expecting option space identifier"); | |
1701 | skip_to_semi (cfile); | |
1702 | return 0; | |
1703 | } | |
98bd7ca0 DH |
1704 | encapsulated = NULL; |
1705 | if (!universe_hash_lookup(&encapsulated, universe_hash, | |
1706 | val, strlen(val), MDL)) { | |
a512d11b | 1707 | parse_warn(cfile, "unknown option space %s", val); |
98bd7ca0 DH |
1708 | skip_to_semi (cfile); |
1709 | return 0; | |
1710 | } | |
962dc4ab TL |
1711 | if (strlen (val) + tokix + 2 > sizeof (tokbuf)) |
1712 | goto toobig; | |
1713 | tokbuf [tokix++] = 'E'; | |
1714 | strcpy (&tokbuf [tokix], val); | |
1715 | tokix += strlen (val); | |
1716 | type = '.'; | |
1717 | has_encapsulation = 1; | |
1718 | break; | |
1719 | ||
4cafb815 EH |
1720 | case ZEROLEN: |
1721 | type = 'Z'; | |
1722 | if (arrayp) { | |
1723 | parse_warn (cfile, "array incompatible with zerolen."); | |
1724 | skip_to_rbrace (cfile, recordp); | |
1725 | if (recordp) | |
1726 | skip_to_semi (cfile); | |
1727 | return 0; | |
1728 | } | |
1729 | no_more_in_record = 1; | |
1730 | break; | |
1731 | ||
6b4b0ec7 | 1732 | default: |
4615d498 | 1733 | parse_warn (cfile, "unknown data type %s", val); |
6b4b0ec7 TL |
1734 | skip_to_rbrace (cfile, recordp); |
1735 | if (recordp) | |
1736 | skip_to_semi (cfile); | |
1737 | return 0; | |
1738 | } | |
1739 | ||
1740 | if (tokix == sizeof tokbuf) { | |
962dc4ab | 1741 | toobig: |
4615d498 | 1742 | parse_warn (cfile, "too many types in record."); |
6b4b0ec7 TL |
1743 | skip_to_rbrace (cfile, recordp); |
1744 | if (recordp) | |
1745 | skip_to_semi (cfile); | |
1746 | return 0; | |
1747 | } | |
1748 | tokbuf [tokix++] = type; | |
1749 | ||
1750 | if (recordp) { | |
b3519f23 | 1751 | token = next_token (&val, (unsigned *)0, cfile); |
d8fc5060 TL |
1752 | if (arrayp > recordp) { |
1753 | if (tokix == sizeof tokbuf) { | |
1754 | parse_warn (cfile, | |
1755 | "too many types in record."); | |
1756 | skip_to_rbrace (cfile, 1); | |
1757 | skip_to_semi (cfile); | |
1758 | return 0; | |
1759 | } | |
1760 | arrayp = 0; | |
1761 | tokbuf[tokix++] = 'a'; | |
1762 | } | |
6b4b0ec7 TL |
1763 | if (token == COMMA) { |
1764 | if (no_more_in_record) { | |
4615d498 TL |
1765 | parse_warn (cfile, |
1766 | "%s must be at end of record.", | |
6b4b0ec7 TL |
1767 | type == 't' ? "text" : "string"); |
1768 | skip_to_rbrace (cfile, 1); | |
1769 | if (recordp) | |
1770 | skip_to_semi (cfile); | |
1771 | return 0; | |
1772 | } | |
b3519f23 | 1773 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 TL |
1774 | goto next_type; |
1775 | } | |
1776 | if (token != RBRACE) { | |
4615d498 | 1777 | parse_warn (cfile, "expecting right brace."); |
6b4b0ec7 TL |
1778 | skip_to_rbrace (cfile, 1); |
1779 | if (recordp) | |
1780 | skip_to_semi (cfile); | |
1781 | return 0; | |
1782 | } | |
1783 | } | |
1784 | if (!parse_semi (cfile)) { | |
4615d498 | 1785 | parse_warn (cfile, "semicolon expected."); |
6b4b0ec7 TL |
1786 | skip_to_semi (cfile); |
1787 | if (recordp) | |
1788 | skip_to_semi (cfile); | |
1789 | return 0; | |
1790 | } | |
962dc4ab TL |
1791 | if (has_encapsulation && arrayp) { |
1792 | parse_warn (cfile, | |
1793 | "Arrays of encapsulations don't make sense."); | |
1794 | return 0; | |
1795 | } | |
98bd7ca0 DH |
1796 | s = dmalloc(tokix + (arrayp ? 1 : 0) + 1, MDL); |
1797 | if (s == NULL) { | |
1798 | log_fatal("no memory for option format."); | |
1799 | } | |
1800 | memcpy(s, tokbuf, tokix); | |
1801 | if (arrayp) { | |
1802 | s[tokix++] = (arrayp > recordp) ? 'a' : 'A'; | |
1803 | } | |
1804 | s[tokix] = '\0'; | |
1805 | ||
b1b7b521 | 1806 | option -> format = s; |
f7fdb216 DH |
1807 | |
1808 | oldopt = NULL; | |
1809 | option_code_hash_lookup(&oldopt, option->universe->code_hash, | |
1810 | &option->code, 0, MDL); | |
86f1d4b7 DH |
1811 | if (oldopt != NULL) { |
1812 | /* | |
1813 | * XXX: This illegalizes a configuration syntax that was | |
1814 | * valid in 3.0.x, where multiple name->code mappings are | |
1815 | * given, but only one code->name mapping survives. It is | |
1816 | * unclear what can or should be done at this point, but it | |
1817 | * seems best to retain 3.0.x behaviour for upgrades to go | |
1818 | * smoothly. | |
1819 | * | |
f7fdb216 DH |
1820 | option_name_hash_delete(option->universe->name_hash, |
1821 | oldopt->name, 0, MDL); | |
86f1d4b7 | 1822 | */ |
f7fdb216 DH |
1823 | option_code_hash_delete(option->universe->code_hash, |
1824 | &oldopt->code, 0, MDL); | |
1825 | ||
1826 | option_dereference(&oldopt, MDL); | |
6b4b0ec7 | 1827 | } |
f7fdb216 DH |
1828 | option_code_hash_add(option->universe->code_hash, &option->code, 0, |
1829 | option, MDL); | |
1830 | option_name_hash_add(option->universe->name_hash, option->name, 0, | |
1831 | option, MDL); | |
98bd7ca0 DH |
1832 | if (has_encapsulation) { |
1833 | /* INSIST(tokbuf[0] == 'E'); */ | |
1834 | /* INSIST(encapsulated != NULL); */ | |
1835 | if (!option_code_hash_lookup(&encapsulated->enc_opt, | |
1836 | option->universe->code_hash, | |
1837 | &option->code, 0, MDL)) { | |
1838 | log_fatal("error finding encapsulated option (%s:%d)", | |
1839 | MDL); | |
1840 | } | |
1841 | } | |
6b4b0ec7 TL |
1842 | return 1; |
1843 | } | |
1844 | ||
028b1f6a TL |
1845 | /* |
1846 | * base64 :== NUMBER_OR_STRING | |
1847 | */ | |
1848 | ||
1849 | int parse_base64 (data, cfile) | |
1850 | struct data_string *data; | |
1851 | struct parse *cfile; | |
1852 | { | |
1853 | enum dhcp_token token; | |
1854 | const char *val; | |
8f01f9ec | 1855 | int i, j, k; |
028b1f6a | 1856 | unsigned acc = 0; |
6b474b5b TL |
1857 | static unsigned char |
1858 | from64 [] = {64, 64, 64, 64, 64, 64, 64, 64, /* \"#$%&' */ | |
1859 | 64, 64, 64, 62, 64, 64, 64, 63, /* ()*+,-./ */ | |
1860 | 52, 53, 54, 55, 56, 57, 58, 59, /* 01234567 */ | |
d758ad8c | 1861 | 60, 61, 64, 64, 64, 64, 64, 64, /* 89:;<=>? */ |
6b474b5b TL |
1862 | 64, 0, 1, 2, 3, 4, 5, 6, /* @ABCDEFG */ |
1863 | 7, 8, 9, 10, 11, 12, 13, 14, /* HIJKLMNO */ | |
1864 | 15, 16, 17, 18, 19, 20, 21, 22, /* PQRSTUVW */ | |
1865 | 23, 24, 25, 64, 64, 64, 64, 64, /* XYZ[\]^_ */ | |
1866 | 64, 26, 27, 28, 29, 30, 31, 32, /* 'abcdefg */ | |
1867 | 33, 34, 35, 36, 37, 38, 39, 40, /* hijklmno */ | |
1868 | 41, 42, 43, 44, 45, 46, 47, 48, /* pqrstuvw */ | |
630786fc | 1869 | 49, 50, 51, 64, 64, 64, 64, 64}; /* xyz{|}~ */ |
962d5eab SR |
1870 | struct string_list *bufs = NULL, |
1871 | *last = NULL, | |
8f01f9ec TL |
1872 | *t; |
1873 | int cc = 0; | |
1874 | int terminated = 0; | |
962d5eab | 1875 | int valid_base64; |
028b1f6a | 1876 | |
8f01f9ec TL |
1877 | /* It's possible for a + or a / to cause a base64 quantity to be |
1878 | tokenized into more than one token, so we have to parse them all | |
1879 | in before decoding. */ | |
1880 | do { | |
b3519f23 | 1881 | unsigned l; |
8f01f9ec | 1882 | |
962d5eab SR |
1883 | token = next_token(&val, &l, cfile); |
1884 | t = dmalloc(l + sizeof(*t), MDL); | |
1885 | if (t == NULL) | |
1886 | log_fatal("no memory for base64 buffer."); | |
1887 | memset(t, 0, (sizeof(*t)) - 1); | |
1888 | memcpy(t->string, val, l + 1); | |
8f01f9ec TL |
1889 | cc += l; |
1890 | if (last) | |
962d5eab | 1891 | last->next = t; |
8f01f9ec TL |
1892 | else |
1893 | bufs = t; | |
1894 | last = t; | |
962d5eab SR |
1895 | token = peek_token(&val, NULL, cfile); |
1896 | valid_base64 = 1; | |
1897 | for (i = 0; val[i]; i++) { | |
1898 | /* Check to see if the character is valid. It | |
1899 | may be out of range or within the right range | |
1900 | but not used in the mapping */ | |
1901 | if (((val[i] < ' ') || (val[i] > 'z')) || | |
1902 | ((from64[val[i] - ' '] > 63) && (val[i] != '='))) { | |
1903 | valid_base64 = 0; | |
1904 | break; /* no need to continue for loop */ | |
1905 | } | |
1906 | } | |
1907 | } while (valid_base64); | |
8f01f9ec | 1908 | |
962d5eab SR |
1909 | data->len = cc; |
1910 | data->len = (data->len * 3) / 4; | |
1911 | if (!buffer_allocate(&data->buffer, data->len, MDL)) { | |
028b1f6a | 1912 | parse_warn (cfile, "can't allocate buffer for base64 data."); |
962d5eab SR |
1913 | data->len = 0; |
1914 | data->data = NULL; | |
0f750c4f | 1915 | goto out; |
028b1f6a TL |
1916 | } |
1917 | ||
8f01f9ec | 1918 | j = k = 0; |
962d5eab SR |
1919 | for (t = bufs; t; t = t->next) { |
1920 | for (i = 0; t->string[i]; i++) { | |
1921 | unsigned foo = t->string[i]; | |
8f01f9ec | 1922 | if (terminated && foo != '=') { |
962d5eab SR |
1923 | parse_warn(cfile, |
1924 | "stuff after base64 '=' terminator: %s.", | |
1925 | &t->string[i]); | |
8f01f9ec TL |
1926 | goto bad; |
1927 | } | |
962d5eab | 1928 | if ((foo < ' ') || (foo > 'z')) { |
028b1f6a | 1929 | bad64: |
962d5eab SR |
1930 | parse_warn(cfile, |
1931 | "invalid base64 character %d.", | |
1932 | t->string[i]); | |
8f01f9ec | 1933 | bad: |
962d5eab | 1934 | data_string_forget(data, MDL); |
8f01f9ec | 1935 | goto out; |
028b1f6a | 1936 | } |
8f01f9ec TL |
1937 | if (foo == '=') |
1938 | terminated = 1; | |
1939 | else { | |
962d5eab | 1940 | foo = from64[foo - ' ']; |
8f01f9ec TL |
1941 | if (foo == 64) |
1942 | goto bad64; | |
1943 | acc = (acc << 6) + foo; | |
1944 | switch (k % 4) { | |
1945 | case 0: | |
1946 | break; | |
1947 | case 1: | |
962d5eab | 1948 | data->buffer->data[j++] = (acc >> 4); |
8f01f9ec TL |
1949 | acc = acc & 0x0f; |
1950 | break; | |
1951 | ||
1952 | case 2: | |
962d5eab | 1953 | data->buffer->data[j++] = (acc >> 2); |
8f01f9ec TL |
1954 | acc = acc & 0x03; |
1955 | break; | |
1956 | case 3: | |
962d5eab | 1957 | data->buffer->data[j++] = acc; |
8f01f9ec TL |
1958 | acc = 0; |
1959 | break; | |
1960 | } | |
1961 | } | |
1962 | k++; | |
1963 | } | |
1964 | } | |
1965 | if (k % 4) { | |
1966 | if (acc) { | |
962d5eab SR |
1967 | parse_warn(cfile, |
1968 | "partial base64 value left over: %d.", | |
1969 | acc); | |
028b1f6a TL |
1970 | } |
1971 | } | |
962d5eab SR |
1972 | data->len = j; |
1973 | data->data = data->buffer->data; | |
8f01f9ec TL |
1974 | out: |
1975 | for (t = bufs; t; t = last) { | |
962d5eab SR |
1976 | last = t->next; |
1977 | dfree(t, MDL); | |
8f01f9ec | 1978 | } |
962d5eab | 1979 | if (data->len) |
8f01f9ec TL |
1980 | return 1; |
1981 | else | |
1982 | return 0; | |
028b1f6a TL |
1983 | } |
1984 | ||
1985 | ||
be6be08d | 1986 | /* |
c57db45c SK |
1987 | * colon-separated-hex-list :== NUMBER | |
1988 | * NUMBER COLON colon-separated-hex-list | |
be6be08d TL |
1989 | */ |
1990 | ||
02a015fb TL |
1991 | int parse_cshl (data, cfile) |
1992 | struct data_string *data; | |
4615d498 | 1993 | struct parse *cfile; |
4761e04b | 1994 | { |
c5b0f529 | 1995 | u_int8_t ibuf [128]; |
b1b7b521 TL |
1996 | unsigned ilen = 0; |
1997 | unsigned tlen = 0; | |
4761e04b TL |
1998 | struct option_tag *sl = (struct option_tag *)0; |
1999 | struct option_tag *next, **last = &sl; | |
02a015fb | 2000 | enum dhcp_token token; |
b1b7b521 | 2001 | const char *val; |
02a015fb | 2002 | unsigned char *rvp; |
4761e04b TL |
2003 | |
2004 | do { | |
b3519f23 | 2005 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b | 2006 | if (token != NUMBER && token != NUMBER_OR_NAME) { |
4615d498 | 2007 | parse_warn (cfile, "expecting hexadecimal number."); |
4761e04b TL |
2008 | skip_to_semi (cfile); |
2009 | for (; sl; sl = next) { | |
2010 | next = sl -> next; | |
fdac15d9 | 2011 | dfree (sl, MDL); |
4761e04b | 2012 | } |
02a015fb | 2013 | return 0; |
4761e04b TL |
2014 | } |
2015 | if (ilen == sizeof ibuf) { | |
2016 | next = (struct option_tag *) | |
2017 | dmalloc (ilen - 1 + | |
fdac15d9 | 2018 | sizeof (struct option_tag), MDL); |
4761e04b | 2019 | if (!next) |
8ae2d595 | 2020 | log_fatal ("no memory for string list."); |
4761e04b TL |
2021 | memcpy (next -> data, ibuf, ilen); |
2022 | *last = next; | |
2023 | last = &next -> next; | |
2024 | tlen += ilen; | |
2025 | ilen = 0; | |
2026 | } | |
4615d498 | 2027 | convert_num (cfile, &ibuf [ilen++], val, 16, 8); |
4761e04b | 2028 | |
b3519f23 | 2029 | token = peek_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
2030 | if (token != COLON) |
2031 | break; | |
b3519f23 | 2032 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
2033 | } while (1); |
2034 | ||
4bd8800e | 2035 | if (!buffer_allocate (&data -> buffer, tlen + ilen, MDL)) |
8ae2d595 | 2036 | log_fatal ("no memory to store octet data."); |
02a015fb TL |
2037 | data -> data = &data -> buffer -> data [0]; |
2038 | data -> len = tlen + ilen; | |
2039 | data -> terminated = 0; | |
2040 | ||
b1b7b521 | 2041 | rvp = &data -> buffer -> data [0]; |
4761e04b TL |
2042 | while (sl) { |
2043 | next = sl -> next; | |
2044 | memcpy (rvp, sl -> data, sizeof ibuf); | |
2045 | rvp += sizeof ibuf; | |
fdac15d9 | 2046 | dfree (sl, MDL); |
4761e04b TL |
2047 | sl = next; |
2048 | } | |
2049 | ||
2050 | memcpy (rvp, ibuf, ilen); | |
02a015fb | 2051 | return 1; |
4761e04b | 2052 | } |
be6be08d TL |
2053 | |
2054 | /* | |
2055 | * executable-statements :== executable-statement executable-statements | | |
2056 | * executable-statement | |
2057 | * | |
2058 | * executable-statement :== | |
2059 | * IF if-statement | | |
2060 | * ADD class-name SEMI | | |
2061 | * BREAK SEMI | | |
2062 | * OPTION option-parameter SEMI | | |
2063 | * SUPERSEDE option-parameter SEMI | | |
2064 | * PREPEND option-parameter SEMI | | |
2065 | * APPEND option-parameter SEMI | |
2066 | */ | |
2067 | ||
f579f39f | 2068 | int parse_executable_statements (statements, cfile, lose, case_context) |
79a65726 | 2069 | struct executable_statement **statements; |
4615d498 | 2070 | struct parse *cfile; |
be6be08d | 2071 | int *lose; |
f579f39f | 2072 | enum expression_context case_context; |
be6be08d | 2073 | { |
79a65726 | 2074 | struct executable_statement **next; |
be6be08d | 2075 | |
79a65726 | 2076 | next = statements; |
f579f39f | 2077 | while (parse_executable_statement (next, cfile, lose, case_context)) |
be6be08d | 2078 | next = &((*next) -> next); |
02a015fb | 2079 | if (!*lose) |
79a65726 TL |
2080 | return 1; |
2081 | return 0; | |
be6be08d TL |
2082 | } |
2083 | ||
f579f39f | 2084 | int parse_executable_statement (result, cfile, lose, case_context) |
79a65726 | 2085 | struct executable_statement **result; |
4615d498 | 2086 | struct parse *cfile; |
be6be08d | 2087 | int *lose; |
f579f39f | 2088 | enum expression_context case_context; |
be6be08d | 2089 | { |
66cebfcb DH |
2090 | #if defined(ENABLE_EXECUTE) |
2091 | unsigned len; | |
2092 | struct expression **ep; | |
2093 | #endif | |
02a015fb | 2094 | enum dhcp_token token; |
b1b7b521 | 2095 | const char *val; |
be6be08d | 2096 | struct class *cta; |
272ef1bc | 2097 | struct option *option=NULL; |
b1013db7 | 2098 | struct option_cache *cache; |
b1b7b521 | 2099 | int known; |
0776fd12 | 2100 | int flag; |
88ab5737 | 2101 | int i; |
fa392aea | 2102 | struct dns_zone *zone; |
fa392aea | 2103 | isc_result_t status; |
d758ad8c | 2104 | char *s; |
be6be08d | 2105 | |
b3519f23 | 2106 | token = peek_token (&val, (unsigned *)0, cfile); |
b1013db7 | 2107 | switch (token) { |
5e864416 DH |
2108 | case DB_TIME_FORMAT: |
2109 | next_token(&val, NULL, cfile); | |
2110 | ||
2111 | token = next_token(&val, NULL, cfile); | |
2112 | if (token == DEFAULT) { | |
2113 | db_time_format = DEFAULT_TIME_FORMAT; | |
2114 | } else if (token == LOCAL) { | |
2115 | db_time_format = LOCAL_TIME_FORMAT; | |
2116 | } else { | |
2117 | parse_warn(cfile, "Expecting 'local' or 'default'."); | |
2118 | if (token != SEMI) | |
2119 | skip_to_semi(cfile); | |
2120 | *lose = 1; | |
2121 | return 0; | |
2122 | } | |
2123 | ||
2124 | token = next_token(&val, NULL, cfile); | |
2125 | if (token != SEMI) { | |
2126 | parse_warn(cfile, "Expecting a semicolon."); | |
2127 | *lose = 1; | |
2128 | return 0; | |
2129 | } | |
2130 | ||
2131 | /* We're done here. */ | |
2132 | return 1; | |
2133 | ||
be6be08d | 2134 | case IF: |
b3519f23 | 2135 | next_token (&val, (unsigned *)0, cfile); |
79a65726 TL |
2136 | return parse_if_statement (result, cfile, lose); |
2137 | ||
eb018e2b | 2138 | case TOKEN_ADD: |
b3519f23 TL |
2139 | token = next_token (&val, (unsigned *)0, cfile); |
2140 | token = next_token (&val, (unsigned *)0, cfile); | |
be6be08d | 2141 | if (token != STRING) { |
4615d498 | 2142 | parse_warn (cfile, "expecting class name."); |
be6be08d TL |
2143 | skip_to_semi (cfile); |
2144 | *lose = 1; | |
79a65726 | 2145 | return 0; |
be6be08d | 2146 | } |
20916cae TL |
2147 | cta = (struct class *)0; |
2148 | status = find_class (&cta, val, MDL); | |
2149 | if (status != ISC_R_SUCCESS) { | |
2150 | parse_warn (cfile, "class %s: %s", | |
2151 | val, isc_result_totext (status)); | |
be6be08d TL |
2152 | skip_to_semi (cfile); |
2153 | *lose = 1; | |
79a65726 | 2154 | return 0; |
be6be08d TL |
2155 | } |
2156 | if (!parse_semi (cfile)) { | |
2157 | *lose = 1; | |
79a65726 | 2158 | return 0; |
be6be08d | 2159 | } |
4bd8800e | 2160 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
2161 | log_fatal ("no memory for new statement."); |
2162 | (*result) -> op = add_statement; | |
2163 | (*result) -> data.add = cta; | |
be6be08d TL |
2164 | break; |
2165 | ||
2166 | case BREAK: | |
b3519f23 | 2167 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
2168 | if (!parse_semi (cfile)) { |
2169 | *lose = 1; | |
79a65726 | 2170 | return 0; |
be6be08d | 2171 | } |
4bd8800e | 2172 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
2173 | log_fatal ("no memory for new statement."); |
2174 | (*result) -> op = break_statement; | |
be6be08d TL |
2175 | break; |
2176 | ||
25541f2f | 2177 | case SEND: |
b3519f23 | 2178 | token = next_token (&val, (unsigned *)0, cfile); |
1898dcf7 | 2179 | known = 0; |
f7fdb216 DH |
2180 | status = parse_option_name (cfile, 0, &known, &option); |
2181 | if (status != ISC_R_SUCCESS || option == NULL) { | |
1898dcf7 TL |
2182 | *lose = 1; |
2183 | return 0; | |
2184 | } | |
f7fdb216 DH |
2185 | status = parse_option_statement(result, cfile, 1, option, |
2186 | send_option_statement); | |
2187 | option_dereference(&option, MDL); | |
2188 | return status; | |
25541f2f TL |
2189 | |
2190 | case SUPERSEDE: | |
be6be08d | 2191 | case OPTION: |
b3519f23 | 2192 | token = next_token (&val, (unsigned *)0, cfile); |
b1b7b521 | 2193 | known = 0; |
f7fdb216 DH |
2194 | status = parse_option_name (cfile, 0, &known, &option); |
2195 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2196 | *lose = 1; |
79a65726 | 2197 | return 0; |
be6be08d | 2198 | } |
f7fdb216 DH |
2199 | status = parse_option_statement(result, cfile, 1, option, |
2200 | supersede_option_statement); | |
2201 | option_dereference(&option, MDL); | |
2202 | return status; | |
be6be08d | 2203 | |
b1013db7 | 2204 | case ALLOW: |
0776fd12 TL |
2205 | flag = 1; |
2206 | goto pad; | |
b1013db7 | 2207 | case DENY: |
0776fd12 TL |
2208 | flag = 0; |
2209 | goto pad; | |
2210 | case IGNORE: | |
2211 | flag = 2; | |
2212 | pad: | |
b3519f23 | 2213 | token = next_token (&val, (unsigned *)0, cfile); |
b1013db7 | 2214 | cache = (struct option_cache *)0; |
2db25842 | 2215 | if (!parse_allow_deny (&cache, cfile, flag)) |
79a65726 | 2216 | return 0; |
4bd8800e | 2217 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
2218 | log_fatal ("no memory for new statement."); |
2219 | (*result) -> op = supersede_option_statement; | |
2220 | (*result) -> data.option = cache; | |
b1013db7 TL |
2221 | break; |
2222 | ||
be6be08d | 2223 | case DEFAULT: |
b3519f23 TL |
2224 | token = next_token (&val, (unsigned *)0, cfile); |
2225 | token = peek_token (&val, (unsigned *)0, cfile); | |
f579f39f TL |
2226 | if (token == COLON) |
2227 | goto switch_default; | |
b1b7b521 | 2228 | known = 0; |
f7fdb216 DH |
2229 | status = parse_option_name (cfile, 0, &known, &option); |
2230 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2231 | *lose = 1; |
79a65726 | 2232 | return 0; |
be6be08d | 2233 | } |
f7fdb216 DH |
2234 | status = parse_option_statement(result, cfile, 1, option, |
2235 | default_option_statement); | |
2236 | option_dereference(&option, MDL); | |
2237 | return status; | |
be6be08d TL |
2238 | |
2239 | case PREPEND: | |
b3519f23 | 2240 | token = next_token (&val, (unsigned *)0, cfile); |
b1b7b521 | 2241 | known = 0; |
f7fdb216 DH |
2242 | status = parse_option_name (cfile, 0, &known, &option); |
2243 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2244 | *lose = 1; |
79a65726 | 2245 | return 0; |
be6be08d | 2246 | } |
f7fdb216 DH |
2247 | status = parse_option_statement(result, cfile, 1, option, |
2248 | prepend_option_statement); | |
2249 | option_dereference(&option, MDL); | |
2250 | return status; | |
be6be08d TL |
2251 | |
2252 | case APPEND: | |
b3519f23 | 2253 | token = next_token (&val, (unsigned *)0, cfile); |
b1b7b521 | 2254 | known = 0; |
f7fdb216 DH |
2255 | status = parse_option_name (cfile, 0, &known, &option); |
2256 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2257 | *lose = 1; |
79a65726 | 2258 | return 0; |
be6be08d | 2259 | } |
f7fdb216 DH |
2260 | status = parse_option_statement(result, cfile, 1, option, |
2261 | append_option_statement); | |
2262 | option_dereference(&option, MDL); | |
2263 | return status; | |
be6be08d | 2264 | |
79a65726 | 2265 | case ON: |
b3519f23 | 2266 | token = next_token (&val, (unsigned *)0, cfile); |
79a65726 TL |
2267 | return parse_on_statement (result, cfile, lose); |
2268 | ||
f579f39f | 2269 | case SWITCH: |
b3519f23 | 2270 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2271 | return parse_switch_statement (result, cfile, lose); |
2272 | ||
2273 | case CASE: | |
b3519f23 | 2274 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2275 | if (case_context == context_any) { |
2276 | parse_warn (cfile, | |
2277 | "case statement in inappropriate scope."); | |
2278 | *lose = 1; | |
2279 | skip_to_semi (cfile); | |
2280 | return 0; | |
2281 | } | |
2282 | return parse_case_statement (result, | |
2283 | cfile, lose, case_context); | |
2284 | ||
2285 | switch_default: | |
b3519f23 | 2286 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2287 | if (case_context == context_any) { |
2288 | parse_warn (cfile, "switch default statement in %s", | |
2289 | "inappropriate scope."); | |
2290 | ||
2291 | *lose = 1; | |
2292 | return 0; | |
2293 | } else { | |
4bd8800e | 2294 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
2295 | log_fatal ("no memory for default statement."); |
2296 | (*result) -> op = default_statement; | |
2297 | return 1; | |
2298 | } | |
2299 | ||
31cb2a5f | 2300 | case DEFINE: |
f579f39f | 2301 | case TOKEN_SET: |
b3519f23 | 2302 | token = next_token (&val, (unsigned *)0, cfile); |
31cb2a5f TL |
2303 | if (token == DEFINE) |
2304 | flag = 1; | |
2305 | else | |
2306 | flag = 0; | |
f579f39f | 2307 | |
b3519f23 | 2308 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2309 | if (token != NAME && token != NUMBER_OR_NAME) { |
2310 | parse_warn (cfile, | |
2311 | "%s can't be a variable name", val); | |
2312 | badset: | |
2313 | skip_to_semi (cfile); | |
2314 | *lose = 1; | |
2315 | return 0; | |
2316 | } | |
2317 | ||
4bd8800e | 2318 | if (!executable_statement_allocate (result, MDL)) |
f579f39f | 2319 | log_fatal ("no memory for set statement."); |
31cb2a5f | 2320 | (*result) -> op = flag ? define_statement : set_statement; |
fdac15d9 | 2321 | (*result) -> data.set.name = dmalloc (strlen (val) + 1, MDL); |
f579f39f TL |
2322 | if (!(*result)->data.set.name) |
2323 | log_fatal ("can't allocate variable name"); | |
2324 | strcpy ((*result) -> data.set.name, val); | |
b3519f23 | 2325 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f | 2326 | |
31cb2a5f TL |
2327 | if (token == LPAREN) { |
2328 | struct string_list *head, *cur, *new; | |
2329 | struct expression *expr; | |
2330 | head = cur = (struct string_list *)0; | |
2331 | do { | |
b3519f23 TL |
2332 | token = next_token (&val, |
2333 | (unsigned *)0, cfile); | |
31cb2a5f TL |
2334 | if (token == RPAREN) |
2335 | break; | |
2336 | if (token != NAME && token != NUMBER_OR_NAME) { | |
2337 | parse_warn (cfile, | |
2338 | "expecting argument name"); | |
2339 | skip_to_rbrace (cfile, 0); | |
2340 | *lose = 1; | |
2341 | executable_statement_dereference | |
2342 | (result, MDL); | |
2343 | return 0; | |
2344 | } | |
2345 | new = ((struct string_list *) | |
2346 | dmalloc (sizeof (struct string_list) + | |
2347 | strlen (val), MDL)); | |
2348 | if (!new) | |
2349 | log_fatal ("can't allocate string."); | |
2350 | memset (new, 0, sizeof *new); | |
2351 | strcpy (new -> string, val); | |
2352 | if (cur) { | |
2353 | cur -> next = new; | |
2354 | cur = new; | |
2355 | } else { | |
2356 | head = cur = new; | |
2357 | } | |
b3519f23 TL |
2358 | token = next_token (&val, |
2359 | (unsigned *)0, cfile); | |
31cb2a5f TL |
2360 | } while (token == COMMA); |
2361 | ||
2362 | if (token != RPAREN) { | |
2363 | parse_warn (cfile, "expecting right paren."); | |
2364 | badx: | |
2365 | skip_to_semi (cfile); | |
f579f39f | 2366 | *lose = 1; |
31cb2a5f TL |
2367 | executable_statement_dereference (result, MDL); |
2368 | return 0; | |
2369 | } | |
2370 | ||
b3519f23 | 2371 | token = next_token (&val, (unsigned *)0, cfile); |
31cb2a5f TL |
2372 | if (token != LBRACE) { |
2373 | parse_warn (cfile, "expecting left brace."); | |
2374 | goto badx; | |
2375 | } | |
2376 | ||
2377 | expr = (struct expression *)0; | |
2378 | if (!(expression_allocate (&expr, MDL))) | |
2379 | log_fatal ("can't allocate expression."); | |
2380 | expr -> op = expr_function; | |
2381 | if (!fundef_allocate (&expr -> data.func, MDL)) | |
2382 | log_fatal ("can't allocate fundef."); | |
2383 | expr -> data.func -> args = head; | |
2384 | (*result) -> data.set.expr = expr; | |
2385 | ||
2386 | if (!(parse_executable_statements | |
2387 | (&expr -> data.func -> statements, cfile, lose, | |
2388 | case_context))) { | |
2389 | if (*lose) | |
2390 | goto badx; | |
2391 | } | |
2392 | ||
b3519f23 | 2393 | token = next_token (&val, (unsigned *)0, cfile); |
31cb2a5f TL |
2394 | if (token != RBRACE) { |
2395 | parse_warn (cfile, "expecting rigt brace."); | |
2396 | goto badx; | |
2397 | } | |
2398 | } else { | |
2399 | if (token != EQUAL) { | |
2400 | parse_warn (cfile, | |
2401 | "expecting '=' in %s statement.", | |
2402 | flag ? "define" : "set"); | |
2403 | goto badset; | |
2404 | } | |
2405 | ||
2406 | if (!parse_expression (&(*result) -> data.set.expr, | |
2407 | cfile, lose, context_any, | |
2408 | (struct expression **)0, | |
2409 | expr_none)) { | |
2410 | if (!*lose) | |
2411 | parse_warn (cfile, | |
2412 | "expecting expression."); | |
2413 | else | |
2414 | *lose = 1; | |
2415 | skip_to_semi (cfile); | |
2416 | executable_statement_dereference (result, MDL); | |
2417 | return 0; | |
2418 | } | |
98311e4b DH |
2419 | if (!parse_semi (cfile)) { |
2420 | *lose = 1; | |
2421 | executable_statement_dereference (result, MDL); | |
2422 | return 0; | |
2423 | } | |
f579f39f | 2424 | } |
f579f39f TL |
2425 | break; |
2426 | ||
fdac15d9 | 2427 | case UNSET: |
b3519f23 | 2428 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 | 2429 | |
b3519f23 | 2430 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
2431 | if (token != NAME && token != NUMBER_OR_NAME) { |
2432 | parse_warn (cfile, | |
2433 | "%s can't be a variable name", val); | |
fdac15d9 TL |
2434 | skip_to_semi (cfile); |
2435 | *lose = 1; | |
2436 | return 0; | |
2437 | } | |
2438 | ||
4bd8800e | 2439 | if (!executable_statement_allocate (result, MDL)) |
fdac15d9 TL |
2440 | log_fatal ("no memory for set statement."); |
2441 | (*result) -> op = unset_statement; | |
2442 | (*result) -> data.unset = dmalloc (strlen (val) + 1, MDL); | |
2443 | if (!(*result)->data.unset) | |
2444 | log_fatal ("can't allocate variable name"); | |
2445 | strcpy ((*result) -> data.unset, val); | |
98311e4b DH |
2446 | if (!parse_semi (cfile)) { |
2447 | *lose = 1; | |
2448 | executable_statement_dereference (result, MDL); | |
2449 | return 0; | |
2450 | } | |
fdac15d9 TL |
2451 | break; |
2452 | ||
2453 | case EVAL: | |
b3519f23 | 2454 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 | 2455 | |
4bd8800e | 2456 | if (!executable_statement_allocate (result, MDL)) |
fdac15d9 TL |
2457 | log_fatal ("no memory for eval statement."); |
2458 | (*result) -> op = eval_statement; | |
2459 | ||
2460 | if (!parse_expression (&(*result) -> data.eval, | |
2461 | cfile, lose, context_data, /* XXX */ | |
2462 | (struct expression **)0, expr_none)) { | |
2463 | if (!*lose) | |
2464 | parse_warn (cfile, | |
2465 | "expecting data expression."); | |
2466 | else | |
2467 | *lose = 1; | |
2468 | skip_to_semi (cfile); | |
4bd8800e | 2469 | executable_statement_dereference (result, MDL); |
fdac15d9 TL |
2470 | return 0; |
2471 | } | |
98311e4b DH |
2472 | if (!parse_semi (cfile)) { |
2473 | *lose = 1; | |
2474 | executable_statement_dereference (result, MDL); | |
2475 | } | |
fdac15d9 TL |
2476 | break; |
2477 | ||
253c8b6a EH |
2478 | case EXECUTE: |
2479 | #ifdef ENABLE_EXECUTE | |
2480 | token = next_token(&val, NULL, cfile); | |
2481 | ||
2482 | if (!executable_statement_allocate (result, MDL)) | |
2483 | log_fatal ("no memory for execute statement."); | |
2484 | (*result)->op = execute_statement; | |
2485 | ||
2486 | token = next_token(&val, NULL, cfile); | |
2487 | if (token != LPAREN) { | |
2488 | parse_warn(cfile, "left parenthesis expected."); | |
2489 | skip_to_semi(cfile); | |
2490 | *lose = 1; | |
2491 | return 0; | |
2492 | } | |
2493 | ||
2494 | token = next_token(&val, &len, cfile); | |
2495 | if (token != STRING) { | |
2496 | parse_warn(cfile, "Expecting a quoted string."); | |
2497 | skip_to_semi(cfile); | |
2498 | *lose = 1; | |
2499 | return 0; | |
2500 | } | |
2501 | ||
2502 | (*result)->data.execute.command = dmalloc(len + 1, MDL); | |
2503 | if ((*result)->data.execute.command == NULL) | |
2504 | log_fatal("can't allocate command name"); | |
2505 | strcpy((*result)->data.execute.command, val); | |
2506 | ||
2507 | ep = &(*result)->data.execute.arglist; | |
2508 | (*result)->data.execute.argc = 0; | |
2509 | ||
2510 | while((token = next_token(&val, NULL, cfile)) == COMMA) { | |
2511 | if (!expression_allocate(ep, MDL)) | |
2512 | log_fatal ("can't allocate expression"); | |
2513 | ||
2514 | if (!parse_data_expression (&(*ep) -> data.arg.val, | |
2515 | cfile, lose)) { | |
2516 | if (!*lose) { | |
2517 | parse_warn (cfile, | |
2518 | "expecting expression."); | |
2519 | *lose = 1; | |
2520 | } | |
2521 | skip_to_semi(cfile); | |
2522 | *lose = 1; | |
2523 | return 0; | |
2524 | } | |
2525 | ep = &(*ep)->data.arg.next; | |
2526 | (*result)->data.execute.argc++; | |
2527 | } | |
2528 | ||
2529 | if (token != RPAREN) { | |
2530 | parse_warn(cfile, "right parenthesis expected."); | |
2531 | skip_to_semi(cfile); | |
2532 | *lose = 1; | |
2533 | return 0; | |
2534 | } | |
2535 | ||
2536 | if (!parse_semi (cfile)) { | |
2537 | *lose = 1; | |
2538 | executable_statement_dereference (result, MDL); | |
2539 | } | |
2540 | #else /* ! ENABLE_EXECUTE */ | |
2541 | parse_warn(cfile, "define ENABLE_EXECUTE in site.h to " | |
2542 | "enable execute(); expressions."); | |
2543 | skip_to_semi(cfile); | |
2544 | *lose = 1; | |
2545 | return 0; | |
2546 | #endif /* ENABLE_EXECUTE */ | |
2547 | break; | |
2548 | ||
1b234d44 | 2549 | case RETURN: |
b3519f23 | 2550 | token = next_token (&val, (unsigned *)0, cfile); |
1b234d44 DN |
2551 | |
2552 | if (!executable_statement_allocate (result, MDL)) | |
2553 | log_fatal ("no memory for return statement."); | |
2554 | (*result) -> op = return_statement; | |
2555 | ||
2556 | if (!parse_expression (&(*result) -> data.retval, | |
2557 | cfile, lose, context_data, | |
2558 | (struct expression **)0, expr_none)) { | |
2559 | if (!*lose) | |
2560 | parse_warn (cfile, | |
2561 | "expecting data expression."); | |
2562 | else | |
2563 | *lose = 1; | |
2564 | skip_to_semi (cfile); | |
2565 | executable_statement_dereference (result, MDL); | |
2566 | return 0; | |
2567 | } | |
98311e4b DH |
2568 | if (!parse_semi (cfile)) { |
2569 | *lose = 1; | |
2570 | executable_statement_dereference (result, MDL); | |
2571 | return 0; | |
2572 | } | |
1b234d44 DN |
2573 | break; |
2574 | ||
e7a9c293 | 2575 | case LOG: |
b3519f23 | 2576 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2577 | |
2578 | if (!executable_statement_allocate (result, MDL)) | |
2579 | log_fatal ("no memory for log statement."); | |
2580 | (*result) -> op = log_statement; | |
2581 | ||
b3519f23 | 2582 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2583 | if (token != LPAREN) { |
2584 | parse_warn (cfile, "left parenthesis expected."); | |
2585 | skip_to_semi (cfile); | |
2586 | *lose = 1; | |
2587 | return 0; | |
2588 | } | |
2589 | ||
b3519f23 | 2590 | token = peek_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2591 | i = 1; |
2592 | if (token == FATAL) { | |
2593 | (*result) -> data.log.priority = log_priority_fatal; | |
2594 | } else if (token == ERROR) { | |
2595 | (*result) -> data.log.priority = log_priority_error; | |
2596 | } else if (token == TOKEN_DEBUG) { | |
2597 | (*result) -> data.log.priority = log_priority_debug; | |
2598 | } else if (token == INFO) { | |
2599 | (*result) -> data.log.priority = log_priority_info; | |
2600 | } else { | |
2601 | (*result) -> data.log.priority = log_priority_debug; | |
2602 | i = 0; | |
2603 | } | |
2604 | if (i) { | |
b3519f23 TL |
2605 | token = next_token (&val, (unsigned *)0, cfile); |
2606 | token = next_token (&val, (unsigned *)0, cfile); | |
e7a9c293 DN |
2607 | if (token != COMMA) { |
2608 | parse_warn (cfile, "comma expected."); | |
2609 | skip_to_semi (cfile); | |
2610 | *lose = 1; | |
2611 | return 0; | |
2612 | } | |
2613 | } | |
2614 | ||
2615 | if (!(parse_data_expression | |
2616 | (&(*result) -> data.log.expr, cfile, lose))) { | |
2617 | skip_to_semi (cfile); | |
2618 | *lose = 1; | |
2619 | return 0; | |
2620 | } | |
2621 | ||
b3519f23 | 2622 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2623 | if (token != RPAREN) { |
2624 | parse_warn (cfile, "right parenthesis expected."); | |
2625 | skip_to_semi (cfile); | |
2626 | *lose = 1; | |
2627 | return 0; | |
2628 | } | |
2629 | ||
b3519f23 | 2630 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2631 | if (token != SEMI) { |
2632 | parse_warn (cfile, "semicolon expected."); | |
2633 | skip_to_semi (cfile); | |
2634 | *lose = 1; | |
2635 | return 0; | |
2636 | } | |
2637 | break; | |
5e864416 | 2638 | |
fa392aea TL |
2639 | /* Not really a statement, but we parse it here anyway |
2640 | because it's appropriate for all DHCP agents with | |
2641 | parsers. */ | |
2642 | case ZONE: | |
b3519f23 | 2643 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a | 2644 | zone = (struct dns_zone *)0; |
fa392aea TL |
2645 | if (!dns_zone_allocate (&zone, MDL)) |
2646 | log_fatal ("no memory for new zone."); | |
2647 | zone -> name = parse_host_name (cfile); | |
2648 | if (!zone -> name) { | |
e7a9c293 | 2649 | parse_warn (cfile, "expecting hostname."); |
98311e4b | 2650 | badzone: |
fa392aea TL |
2651 | *lose = 1; |
2652 | skip_to_semi (cfile); | |
2653 | dns_zone_dereference (&zone, MDL); | |
2654 | return 0; | |
2655 | } | |
88ab5737 TL |
2656 | i = strlen (zone -> name); |
2657 | if (zone -> name [i - 1] != '.') { | |
d758ad8c | 2658 | s = dmalloc ((unsigned)i + 2, MDL); |
98311e4b DH |
2659 | if (!s) { |
2660 | parse_warn (cfile, "no trailing '.' on zone"); | |
d758ad8c | 2661 | goto badzone; |
98311e4b | 2662 | } |
d758ad8c TL |
2663 | strcpy (s, zone -> name); |
2664 | s [i] = '.'; | |
2665 | s [i + 1] = 0; | |
2666 | dfree (zone -> name, MDL); | |
2667 | zone -> name = s; | |
88ab5737 | 2668 | } |
fa392aea TL |
2669 | if (!parse_zone (zone, cfile)) |
2670 | goto badzone; | |
fa392aea | 2671 | status = enter_dns_zone (zone); |
fa392aea | 2672 | if (status != ISC_R_SUCCESS) { |
98311e4b DH |
2673 | parse_warn (cfile, "dns zone key %s: %s", |
2674 | zone -> name, isc_result_totext (status)); | |
fa392aea TL |
2675 | dns_zone_dereference (&zone, MDL); |
2676 | return 0; | |
2677 | } | |
d758ad8c | 2678 | dns_zone_dereference (&zone, MDL); |
fa392aea TL |
2679 | return 1; |
2680 | ||
2681 | /* Also not really a statement, but same idea as above. */ | |
028b1f6a | 2682 | case KEY: |
b3519f23 | 2683 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a | 2684 | if (!parse_key (cfile)) { |
fa392aea | 2685 | *lose = 1; |
fa392aea TL |
2686 | return 0; |
2687 | } | |
028b1f6a | 2688 | return 1; |
e7a9c293 | 2689 | |
be6be08d | 2690 | default: |
588af269 | 2691 | if (config_universe && is_identifier (token)) { |
20916cae | 2692 | option = (struct option *)0; |
f7fdb216 DH |
2693 | option_name_hash_lookup(&option, |
2694 | config_universe->name_hash, | |
2695 | val, 0, MDL); | |
588af269 | 2696 | if (option) { |
b3519f23 TL |
2697 | token = next_token (&val, |
2698 | (unsigned *)0, cfile); | |
f7fdb216 DH |
2699 | status = parse_option_statement |
2700 | (result, cfile, 1, option, | |
2701 | supersede_option_statement); | |
2702 | option_dereference(&option, MDL); | |
2703 | return status; | |
588af269 TL |
2704 | } |
2705 | } | |
1b234d44 DN |
2706 | |
2707 | if (token == NUMBER_OR_NAME || token == NAME) { | |
2708 | /* This is rather ugly. Since function calls are | |
2709 | data expressions, fake up an eval statement. */ | |
2710 | if (!executable_statement_allocate (result, MDL)) | |
2711 | log_fatal ("no memory for eval statement."); | |
2712 | (*result) -> op = eval_statement; | |
2713 | ||
2714 | if (!parse_expression (&(*result) -> data.eval, | |
2715 | cfile, lose, context_data, | |
2716 | (struct expression **)0, | |
2717 | expr_none)) { | |
2718 | if (!*lose) | |
2719 | parse_warn (cfile, "expecting " | |
2720 | "function call."); | |
2721 | else | |
2722 | *lose = 1; | |
2723 | skip_to_semi (cfile); | |
2724 | executable_statement_dereference (result, MDL); | |
2725 | return 0; | |
2726 | } | |
98311e4b DH |
2727 | if (!parse_semi (cfile)) { |
2728 | *lose = 1; | |
2729 | executable_statement_dereference (result, MDL); | |
2730 | return 0; | |
2731 | } | |
1b234d44 DN |
2732 | break; |
2733 | } | |
2734 | ||
be6be08d | 2735 | *lose = 0; |
79a65726 | 2736 | return 0; |
be6be08d TL |
2737 | } |
2738 | ||
79a65726 TL |
2739 | return 1; |
2740 | } | |
2741 | ||
fa392aea TL |
2742 | /* zone-statements :== zone-statement | |
2743 | zone-statement zone-statements | |
2744 | zone-statement :== | |
2745 | PRIMARY ip-addresses SEMI | | |
2746 | SECONDARY ip-addresses SEMI | | |
d424157d SR |
2747 | PRIMARY6 ip-address6 SEMI | |
2748 | SECONDARY6 ip-address6 SEMI | | |
028b1f6a TL |
2749 | key-reference SEMI |
2750 | ip-addresses :== ip-addr-or-hostname | | |
2751 | ip-addr-or-hostname COMMA ip-addresses | |
2752 | key-reference :== KEY STRING | | |
2753 | KEY identifier */ | |
fa392aea TL |
2754 | |
2755 | int parse_zone (struct dns_zone *zone, struct parse *cfile) | |
2756 | { | |
2757 | int token; | |
2758 | const char *val; | |
630786fc | 2759 | char *key_name; |
fa392aea TL |
2760 | struct option_cache *oc; |
2761 | int done = 0; | |
2762 | ||
b3519f23 | 2763 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2764 | if (token != LBRACE) { |
2765 | parse_warn (cfile, "expecting left brace"); | |
2766 | return 0; | |
2767 | } | |
2768 | ||
fa392aea | 2769 | do { |
b3519f23 | 2770 | token = peek_token (&val, (unsigned *)0, cfile); |
fa392aea TL |
2771 | switch (token) { |
2772 | case PRIMARY: | |
2773 | if (zone -> primary) { | |
2774 | parse_warn (cfile, | |
2775 | "more than one primary."); | |
2776 | skip_to_semi (cfile); | |
2777 | return 0; | |
2778 | } | |
2779 | if (!option_cache_allocate (&zone -> primary, MDL)) | |
2780 | log_fatal ("can't allocate primary option cache."); | |
2781 | oc = zone -> primary; | |
2782 | goto consemup; | |
2783 | ||
2784 | case SECONDARY: | |
2785 | if (zone -> secondary) { | |
2786 | parse_warn (cfile, "more than one secondary."); | |
2787 | skip_to_semi (cfile); | |
2788 | return 0; | |
2789 | } | |
2790 | if (!option_cache_allocate (&zone -> secondary, MDL)) | |
2791 | log_fatal ("can't allocate secondary."); | |
2792 | oc = zone -> secondary; | |
2793 | consemup: | |
b3519f23 | 2794 | token = next_token (&val, (unsigned *)0, cfile); |
fa392aea TL |
2795 | do { |
2796 | struct expression *expr = (struct expression *)0; | |
2797 | if (!parse_ip_addr_or_hostname (&expr, cfile, 0)) { | |
2798 | parse_warn (cfile, | |
2799 | "expecting IP addr or hostname."); | |
2800 | skip_to_semi (cfile); | |
2801 | return 0; | |
2802 | } | |
2803 | if (oc -> expression) { | |
2804 | struct expression *old = | |
2805 | (struct expression *)0; | |
2806 | expression_reference (&old, | |
2807 | oc -> expression, | |
2808 | MDL); | |
2809 | expression_dereference (&oc -> expression, | |
2810 | MDL); | |
2811 | if (!make_concat (&oc -> expression, | |
2812 | old, expr)) | |
2813 | log_fatal ("no memory for concat."); | |
2814 | expression_dereference (&expr, MDL); | |
2815 | expression_dereference (&old, MDL); | |
2816 | } else { | |
2817 | expression_reference (&oc -> expression, | |
2818 | expr, MDL); | |
2819 | expression_dereference (&expr, MDL); | |
2820 | } | |
b3519f23 | 2821 | token = next_token (&val, (unsigned *)0, cfile); |
fa392aea TL |
2822 | } while (token == COMMA); |
2823 | if (token != SEMI) { | |
2824 | parse_warn (cfile, "expecting semicolon."); | |
2825 | skip_to_semi (cfile); | |
2826 | return 0; | |
2827 | } | |
2828 | break; | |
2829 | ||
d424157d SR |
2830 | case PRIMARY6: |
2831 | if (zone->primary6) { | |
2832 | parse_warn(cfile, "more than one primary6."); | |
2833 | skip_to_semi(cfile); | |
2834 | return (0); | |
2835 | } | |
2836 | if (!option_cache_allocate (&zone->primary6, MDL)) | |
2837 | log_fatal("can't allocate primary6 option cache."); | |
2838 | oc = zone->primary6; | |
2839 | goto consemup6; | |
2840 | ||
2841 | case SECONDARY6: | |
2842 | if (zone->secondary6) { | |
2843 | parse_warn(cfile, "more than one secondary6."); | |
2844 | skip_to_semi(cfile); | |
2845 | return (0); | |
2846 | } | |
2847 | if (!option_cache_allocate (&zone->secondary6, MDL)) | |
2848 | log_fatal("can't allocate secondary6 " | |
2849 | "option cache."); | |
2850 | oc = zone->secondary6; | |
2851 | consemup6: | |
2852 | token = next_token(&val, NULL, cfile); | |
2853 | do { | |
2854 | struct expression *expr = NULL; | |
2855 | if (parse_ip6_addr_expr(&expr, cfile) == 0) { | |
2856 | parse_warn(cfile, "expecting IPv6 addr."); | |
2857 | skip_to_semi(cfile); | |
2858 | return (0); | |
2859 | } | |
2860 | if (oc->expression) { | |
2861 | struct expression *old = NULL; | |
2862 | expression_reference(&old, oc->expression, | |
2863 | MDL); | |
2864 | expression_dereference(&oc->expression, | |
2865 | MDL); | |
2866 | if (!make_concat(&oc->expression, | |
2867 | old, expr)) | |
2868 | log_fatal("no memory for concat."); | |
2869 | expression_dereference(&expr, MDL); | |
2870 | expression_dereference(&old, MDL); | |
2871 | } else { | |
2872 | expression_reference(&oc->expression, | |
2873 | expr, MDL); | |
2874 | expression_dereference(&expr, MDL); | |
2875 | } | |
2876 | token = next_token(&val, NULL, cfile); | |
2877 | } while (token == COMMA); | |
2878 | if (token != SEMI) { | |
2879 | parse_warn(cfile, "expecting semicolon."); | |
2880 | skip_to_semi(cfile); | |
2881 | return (0); | |
2882 | } | |
2883 | break; | |
2884 | ||
028b1f6a | 2885 | case KEY: |
b3519f23 TL |
2886 | token = next_token (&val, (unsigned *)0, cfile); |
2887 | token = peek_token (&val, (unsigned *)0, cfile); | |
630786fc | 2888 | if (token == STRING) { |
b3519f23 | 2889 | token = next_token (&val, (unsigned *)0, cfile); |
630786fc TL |
2890 | key_name = (char *)0; |
2891 | } else { | |
2892 | key_name = parse_host_name (cfile); | |
b49c02cc TL |
2893 | if (!key_name) { |
2894 | parse_warn (cfile, "expecting key name."); | |
2895 | skip_to_semi (cfile); | |
630786fc | 2896 | return 0; |
b49c02cc | 2897 | } |
630786fc | 2898 | val = key_name; |
fa392aea | 2899 | } |
49146f3c DN |
2900 | if (omapi_auth_key_lookup_name (&zone -> key, val) != |
2901 | ISC_R_SUCCESS) | |
fa392aea | 2902 | parse_warn (cfile, "unknown key %s", val); |
630786fc TL |
2903 | if (key_name) |
2904 | dfree (key_name, MDL); | |
fa392aea TL |
2905 | if (!parse_semi (cfile)) |
2906 | return 0; | |
2907 | break; | |
2908 | ||
2909 | default: | |
2910 | done = 1; | |
2911 | break; | |
2912 | } | |
2913 | } while (!done); | |
2914 | ||
b3519f23 | 2915 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2916 | if (token != RBRACE) { |
2917 | parse_warn (cfile, "expecting right brace."); | |
2918 | return 0; | |
2919 | } | |
fa392aea TL |
2920 | return 1; |
2921 | } | |
2922 | ||
028b1f6a TL |
2923 | /* key-statements :== key-statement | |
2924 | key-statement key-statements | |
2925 | key-statement :== | |
2926 | ALGORITHM host-name SEMI | | |
2927 | secret-definition SEMI | |
2928 | secret-definition :== SECRET base64val | | |
2929 | SECRET STRING */ | |
2930 | ||
2931 | int parse_key (struct parse *cfile) | |
2932 | { | |
2933 | int token; | |
2934 | const char *val; | |
2935 | int done = 0; | |
49146f3c DN |
2936 | struct auth_key *key; |
2937 | struct data_string ds; | |
028b1f6a | 2938 | isc_result_t status; |
2f98b84e | 2939 | char *s; |
028b1f6a | 2940 | |
49146f3c DN |
2941 | key = (struct auth_key *)0; |
2942 | if (omapi_auth_key_new (&key, MDL) != ISC_R_SUCCESS) | |
630786fc TL |
2943 | log_fatal ("no memory for key"); |
2944 | ||
b3519f23 | 2945 | token = peek_token (&val, (unsigned *)0, cfile); |
630786fc | 2946 | if (token == STRING) { |
b3519f23 | 2947 | token = next_token (&val, (unsigned *)0, cfile); |
630786fc TL |
2948 | key -> name = dmalloc (strlen (val) + 1, MDL); |
2949 | if (!key -> name) | |
2950 | log_fatal ("no memory for key name."); | |
2951 | strcpy (key -> name, val); | |
2952 | ||
2953 | } else { | |
2954 | key -> name = parse_host_name (cfile); | |
2955 | if (!key -> name) { | |
b49c02cc | 2956 | parse_warn (cfile, "expecting key name."); |
630786fc TL |
2957 | skip_to_semi (cfile); |
2958 | goto bad; | |
2959 | } | |
2960 | } | |
028b1f6a | 2961 | |
b3519f23 | 2962 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2963 | if (token != LBRACE) { |
2964 | parse_warn (cfile, "expecting left brace"); | |
630786fc | 2965 | goto bad; |
028b1f6a TL |
2966 | } |
2967 | ||
2968 | do { | |
b3519f23 | 2969 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2970 | switch (token) { |
2971 | case ALGORITHM: | |
2972 | if (key -> algorithm) { | |
2973 | parse_warn (cfile, | |
2974 | "key %s: too many algorithms", | |
2975 | key -> name); | |
2976 | goto rbad; | |
2977 | } | |
2978 | key -> algorithm = parse_host_name (cfile); | |
2979 | if (!key -> algorithm) { | |
2980 | parse_warn (cfile, | |
2981 | "expecting key algorithm name."); | |
2982 | goto rbad; | |
2983 | } | |
2984 | if (!parse_semi (cfile)) | |
2985 | goto rbad; | |
2f98b84e TL |
2986 | /* If the algorithm name isn't an FQDN, tack on |
2987 | the .SIG-ALG.REG.NET. domain. */ | |
35155613 | 2988 | s = strrchr (key -> algorithm, '.'); |
2f98b84e | 2989 | if (!s) { |
35155613 TL |
2990 | static char add [] = ".SIG-ALG.REG.INT."; |
2991 | s = dmalloc (strlen (key -> algorithm) + | |
2992 | sizeof (add), MDL); | |
2993 | if (!s) { | |
2994 | log_error ("no memory for key %s.", | |
2995 | "algorithm"); | |
2996 | goto rbad; | |
2997 | } | |
2998 | strcpy (s, key -> algorithm); | |
2999 | strcat (s, add); | |
3000 | dfree (key -> algorithm, MDL); | |
3001 | key -> algorithm = s; | |
3002 | } else if (s [1]) { | |
3003 | /* If there is no trailing '.', hack one in. */ | |
3004 | s = dmalloc (strlen (key -> algorithm) + 2, MDL); | |
3005 | if (!s) { | |
3006 | log_error ("no memory for key %s.", | |
3007 | key -> algorithm); | |
3008 | goto rbad; | |
3009 | } | |
3010 | strcpy (s, key -> algorithm); | |
3011 | strcat (s, "."); | |
3012 | dfree (key -> algorithm, MDL); | |
3013 | key -> algorithm = s; | |
2f98b84e | 3014 | } |
028b1f6a TL |
3015 | break; |
3016 | ||
3017 | case SECRET: | |
49146f3c | 3018 | if (key -> key) { |
028b1f6a TL |
3019 | parse_warn (cfile, "key %s: too many secrets", |
3020 | key -> name); | |
3021 | goto rbad; | |
3022 | } | |
49146f3c DN |
3023 | |
3024 | memset (&ds, 0, sizeof(ds)); | |
3025 | if (!parse_base64 (&ds, cfile)) | |
3026 | goto rbad; | |
3027 | status = omapi_data_string_new (&key -> key, ds.len, | |
3028 | MDL); | |
3029 | if (status != ISC_R_SUCCESS) | |
028b1f6a | 3030 | goto rbad; |
49146f3c DN |
3031 | memcpy (key -> key -> value, |
3032 | ds.buffer -> data, ds.len); | |
3033 | data_string_forget (&ds, MDL); | |
3034 | ||
028b1f6a TL |
3035 | if (!parse_semi (cfile)) |
3036 | goto rbad; | |
3037 | break; | |
3038 | ||
3039 | default: | |
3040 | done = 1; | |
3041 | break; | |
3042 | } | |
3043 | } while (!done); | |
3044 | if (token != RBRACE) { | |
3045 | parse_warn (cfile, "expecting right brace."); | |
3046 | goto rbad; | |
3047 | } | |
13b0934e TL |
3048 | /* Allow the BIND 8 syntax, which has a semicolon after each |
3049 | closing brace. */ | |
b3519f23 | 3050 | token = peek_token (&val, (unsigned *)0, cfile); |
13b0934e | 3051 | if (token == SEMI) |
b3519f23 | 3052 | token = next_token (&val, (unsigned *)0, cfile); |
13b0934e TL |
3053 | |
3054 | /* Remember the key. */ | |
49146f3c | 3055 | status = omapi_auth_key_enter (key); |
028b1f6a TL |
3056 | if (status != ISC_R_SUCCESS) { |
3057 | parse_warn (cfile, "tsig key %s: %s", | |
3058 | key -> name, isc_result_totext (status)); | |
3059 | goto bad; | |
3060 | } | |
d758ad8c | 3061 | omapi_auth_key_dereference (&key, MDL); |
028b1f6a TL |
3062 | return 1; |
3063 | ||
3064 | rbad: | |
3065 | skip_to_rbrace (cfile, 1); | |
3066 | bad: | |
49146f3c | 3067 | omapi_auth_key_dereference (&key, MDL); |
028b1f6a TL |
3068 | return 0; |
3069 | } | |
630786fc | 3070 | |
79a65726 | 3071 | /* |
f579f39f TL |
3072 | * on-statement :== event-types LBRACE executable-statements RBRACE |
3073 | * event-types :== event-type OR event-types | | |
3074 | * event-type | |
79a65726 TL |
3075 | * event-type :== EXPIRY | COMMIT | RELEASE |
3076 | */ | |
3077 | ||
3078 | int parse_on_statement (result, cfile, lose) | |
3079 | struct executable_statement **result; | |
4615d498 | 3080 | struct parse *cfile; |
79a65726 TL |
3081 | int *lose; |
3082 | { | |
3083 | enum dhcp_token token; | |
b1b7b521 | 3084 | const char *val; |
79a65726 | 3085 | |
4bd8800e | 3086 | if (!executable_statement_allocate (result, MDL)) |
8ae2d595 | 3087 | log_fatal ("no memory for new statement."); |
33500c7d | 3088 | (*result) -> op = on_statement; |
79a65726 | 3089 | |
f579f39f | 3090 | do { |
b3519f23 | 3091 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3092 | switch (token) { |
3093 | case EXPIRY: | |
3094 | (*result) -> data.on.evtypes |= ON_EXPIRY; | |
3095 | break; | |
79a65726 | 3096 | |
f579f39f | 3097 | case COMMIT: |
fdac15d9 | 3098 | (*result) -> data.on.evtypes |= ON_COMMIT; |
f579f39f TL |
3099 | break; |
3100 | ||
3101 | case RELEASE: | |
fdac15d9 | 3102 | (*result) -> data.on.evtypes |= ON_RELEASE; |
f579f39f TL |
3103 | break; |
3104 | ||
b49c02cc TL |
3105 | case TRANSMISSION: |
3106 | (*result) -> data.on.evtypes |= ON_TRANSMISSION; | |
3107 | break; | |
3108 | ||
f579f39f TL |
3109 | default: |
3110 | parse_warn (cfile, "expecting a lease event type"); | |
3111 | skip_to_semi (cfile); | |
3112 | *lose = 1; | |
4bd8800e | 3113 | executable_statement_dereference (result, MDL); |
fdac15d9 | 3114 | return 0; |
f579f39f | 3115 | } |
b3519f23 | 3116 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f | 3117 | } while (token == OR); |
79a65726 | 3118 | |
f579f39f TL |
3119 | /* Semicolon means no statements. */ |
3120 | if (token == SEMI) | |
3121 | return 1; | |
3122 | ||
79a65726 | 3123 | if (token != LBRACE) { |
4615d498 | 3124 | parse_warn (cfile, "left brace expected."); |
79a65726 TL |
3125 | skip_to_semi (cfile); |
3126 | *lose = 1; | |
4bd8800e | 3127 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3128 | return 0; |
3129 | } | |
3130 | if (!parse_executable_statements (&(*result) -> data.on.statements, | |
f579f39f | 3131 | cfile, lose, context_any)) { |
79a65726 TL |
3132 | if (*lose) { |
3133 | /* Try to even things up. */ | |
3134 | do { | |
b3519f23 TL |
3135 | token = next_token (&val, |
3136 | (unsigned *)0, cfile); | |
0b69dcc8 | 3137 | } while (token != END_OF_FILE && token != RBRACE); |
4bd8800e | 3138 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3139 | return 0; |
3140 | } | |
3141 | } | |
b3519f23 | 3142 | token = next_token (&val, (unsigned *)0, cfile); |
79a65726 | 3143 | if (token != RBRACE) { |
4615d498 | 3144 | parse_warn (cfile, "right brace expected."); |
79a65726 TL |
3145 | skip_to_semi (cfile); |
3146 | *lose = 1; | |
4bd8800e | 3147 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3148 | return 0; |
3149 | } | |
3150 | return 1; | |
be6be08d TL |
3151 | } |
3152 | ||
f579f39f TL |
3153 | /* |
3154 | * switch-statement :== LPAREN expr RPAREN LBRACE executable-statements RBRACE | |
3155 | * | |
3156 | */ | |
3157 | ||
3158 | int parse_switch_statement (result, cfile, lose) | |
3159 | struct executable_statement **result; | |
3160 | struct parse *cfile; | |
3161 | int *lose; | |
3162 | { | |
3163 | enum dhcp_token token; | |
3164 | const char *val; | |
3165 | ||
4bd8800e | 3166 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
3167 | log_fatal ("no memory for new statement."); |
3168 | (*result) -> op = switch_statement; | |
3169 | ||
b3519f23 | 3170 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3171 | if (token != LPAREN) { |
3172 | parse_warn (cfile, "expecting left brace."); | |
3173 | pfui: | |
3174 | *lose = 1; | |
3175 | skip_to_semi (cfile); | |
3176 | gnorf: | |
4bd8800e | 3177 | executable_statement_dereference (result, MDL); |
f579f39f TL |
3178 | return 0; |
3179 | } | |
3180 | ||
3181 | if (!parse_expression (&(*result) -> data.s_switch.expr, | |
3182 | cfile, lose, context_data_or_numeric, | |
3183 | (struct expression **)0, expr_none)) { | |
3184 | if (!*lose) { | |
3185 | parse_warn (cfile, | |
3186 | "expecting data or numeric expression."); | |
3187 | goto pfui; | |
3188 | } | |
3189 | goto gnorf; | |
3190 | } | |
3191 | ||
b3519f23 | 3192 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3193 | if (token != RPAREN) { |
3194 | parse_warn (cfile, "right paren expected."); | |
3195 | goto pfui; | |
3196 | } | |
3197 | ||
b3519f23 | 3198 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3199 | if (token != LBRACE) { |
3200 | parse_warn (cfile, "left brace expected."); | |
3201 | goto pfui; | |
3202 | } | |
3203 | if (!(parse_executable_statements | |
3204 | (&(*result) -> data.s_switch.statements, cfile, lose, | |
3205 | (is_data_expression ((*result) -> data.s_switch.expr) | |
3206 | ? context_data : context_numeric)))) { | |
3207 | if (*lose) { | |
3208 | skip_to_rbrace (cfile, 1); | |
4bd8800e | 3209 | executable_statement_dereference (result, MDL); |
f579f39f TL |
3210 | return 0; |
3211 | } | |
3212 | } | |
b3519f23 | 3213 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3214 | if (token != RBRACE) { |
3215 | parse_warn (cfile, "right brace expected."); | |
3216 | goto pfui; | |
3217 | } | |
3218 | return 1; | |
3219 | } | |
3220 | ||
3221 | /* | |
3222 | * case-statement :== CASE expr COLON | |
3223 | * | |
3224 | */ | |
3225 | ||
3226 | int parse_case_statement (result, cfile, lose, case_context) | |
3227 | struct executable_statement **result; | |
3228 | struct parse *cfile; | |
3229 | int *lose; | |
3230 | enum expression_context case_context; | |
3231 | { | |
3232 | enum dhcp_token token; | |
3233 | const char *val; | |
3234 | ||
4bd8800e | 3235 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
3236 | log_fatal ("no memory for new statement."); |
3237 | (*result) -> op = case_statement; | |
3238 | ||
3239 | if (!parse_expression (&(*result) -> data.c_case, | |
3240 | cfile, lose, case_context, | |
3241 | (struct expression **)0, expr_none)) | |
3242 | { | |
3243 | if (!*lose) { | |
3244 | parse_warn (cfile, "expecting %s expression.", | |
3245 | (case_context == context_data | |
3246 | ? "data" : "numeric")); | |
3247 | } | |
3248 | pfui: | |
3249 | *lose = 1; | |
3250 | skip_to_semi (cfile); | |
4bd8800e | 3251 | executable_statement_dereference (result, MDL); |
f579f39f TL |
3252 | return 0; |
3253 | } | |
3254 | ||
b3519f23 | 3255 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3256 | if (token != COLON) { |
3257 | parse_warn (cfile, "colon expected."); | |
3258 | goto pfui; | |
3259 | } | |
3260 | return 1; | |
3261 | } | |
3262 | ||
be6be08d TL |
3263 | /* |
3264 | * if-statement :== boolean-expression LBRACE executable-statements RBRACE | |
3265 | * else-statement | |
3266 | * | |
3267 | * else-statement :== <null> | | |
3268 | * ELSE LBRACE executable-statements RBRACE | | |
3269 | * ELSE IF if-statement | | |
3270 | * ELSIF if-statement | |
3271 | */ | |
3272 | ||
79a65726 TL |
3273 | int parse_if_statement (result, cfile, lose) |
3274 | struct executable_statement **result; | |
4615d498 | 3275 | struct parse *cfile; |
be6be08d TL |
3276 | int *lose; |
3277 | { | |
02a015fb | 3278 | enum dhcp_token token; |
b1b7b521 | 3279 | const char *val; |
fdac15d9 | 3280 | int parenp; |
be6be08d | 3281 | |
4bd8800e | 3282 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
3283 | log_fatal ("no memory for if statement."); |
3284 | ||
3285 | (*result) -> op = if_statement; | |
3286 | ||
b3519f23 | 3287 | token = peek_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3288 | if (token == LPAREN) { |
3289 | parenp = 1; | |
b3519f23 | 3290 | next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3291 | } else |
3292 | parenp = 0; | |
3293 | ||
3294 | ||
79a65726 TL |
3295 | if (!parse_boolean_expression (&(*result) -> data.ie.expr, |
3296 | cfile, lose)) { | |
be6be08d | 3297 | if (!*lose) |
4615d498 | 3298 | parse_warn (cfile, "boolean expression expected."); |
4bd8800e | 3299 | executable_statement_dereference (result, MDL); |
166e63eb | 3300 | *lose = 1; |
79a65726 | 3301 | return 0; |
be6be08d | 3302 | } |
02a015fb | 3303 | #if defined (DEBUG_EXPRESSION_PARSE) |
7b01f134 | 3304 | print_expression ("if condition", (*result) -> data.ie.expr); |
02a015fb | 3305 | #endif |
fdac15d9 | 3306 | if (parenp) { |
b3519f23 | 3307 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3308 | if (token != RPAREN) { |
3309 | parse_warn (cfile, "expecting right paren."); | |
3310 | *lose = 1; | |
4bd8800e | 3311 | executable_statement_dereference (result, MDL); |
fdac15d9 TL |
3312 | return 0; |
3313 | } | |
3314 | } | |
b3519f23 | 3315 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 3316 | if (token != LBRACE) { |
4615d498 | 3317 | parse_warn (cfile, "left brace expected."); |
be6be08d TL |
3318 | skip_to_semi (cfile); |
3319 | *lose = 1; | |
4bd8800e | 3320 | executable_statement_dereference (result, MDL); |
79a65726 | 3321 | return 0; |
be6be08d | 3322 | } |
d758ad8c | 3323 | if (!parse_executable_statements (&(*result) -> data.ie.tc, |
f579f39f | 3324 | cfile, lose, context_any)) { |
79a65726 TL |
3325 | if (*lose) { |
3326 | /* Try to even things up. */ | |
3327 | do { | |
b3519f23 TL |
3328 | token = next_token (&val, |
3329 | (unsigned *)0, cfile); | |
0b69dcc8 | 3330 | } while (token != END_OF_FILE && token != RBRACE); |
4bd8800e | 3331 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3332 | return 0; |
3333 | } | |
efc79acb | 3334 | } |
b3519f23 | 3335 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 3336 | if (token != RBRACE) { |
4615d498 | 3337 | parse_warn (cfile, "right brace expected."); |
be6be08d TL |
3338 | skip_to_semi (cfile); |
3339 | *lose = 1; | |
4bd8800e | 3340 | executable_statement_dereference (result, MDL); |
79a65726 | 3341 | return 0; |
be6be08d | 3342 | } |
b3519f23 | 3343 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d | 3344 | if (token == ELSE) { |
b3519f23 TL |
3345 | token = next_token (&val, (unsigned *)0, cfile); |
3346 | token = peek_token (&val, (unsigned *)0, cfile); | |
be6be08d | 3347 | if (token == IF) { |
b3519f23 | 3348 | token = next_token (&val, (unsigned *)0, cfile); |
d758ad8c | 3349 | if (!parse_if_statement (&(*result) -> data.ie.fc, |
79a65726 | 3350 | cfile, lose)) { |
166e63eb TL |
3351 | if (!*lose) |
3352 | parse_warn (cfile, | |
4bd8800e TL |
3353 | "expecting if statement"); |
3354 | executable_statement_dereference (result, MDL); | |
166e63eb TL |
3355 | *lose = 1; |
3356 | return 0; | |
79a65726 | 3357 | } |
be6be08d | 3358 | } else if (token != LBRACE) { |
4615d498 | 3359 | parse_warn (cfile, "left brace or if expected."); |
be6be08d TL |
3360 | skip_to_semi (cfile); |
3361 | *lose = 1; | |
4bd8800e | 3362 | executable_statement_dereference (result, MDL); |
79a65726 | 3363 | return 0; |
be6be08d | 3364 | } else { |
b3519f23 | 3365 | token = next_token (&val, (unsigned *)0, cfile); |
33500c7d | 3366 | if (!(parse_executable_statements |
d758ad8c | 3367 | (&(*result) -> data.ie.fc, |
f579f39f | 3368 | cfile, lose, context_any))) { |
4bd8800e | 3369 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3370 | return 0; |
3371 | } | |
b3519f23 | 3372 | token = next_token (&val, (unsigned *)0, cfile); |
25541f2f | 3373 | if (token != RBRACE) { |
4615d498 | 3374 | parse_warn (cfile, "right brace expected."); |
25541f2f TL |
3375 | skip_to_semi (cfile); |
3376 | *lose = 1; | |
4bd8800e | 3377 | executable_statement_dereference (result, MDL); |
79a65726 | 3378 | return 0; |
25541f2f | 3379 | } |
be6be08d TL |
3380 | } |
3381 | } else if (token == ELSIF) { | |
b3519f23 | 3382 | token = next_token (&val, (unsigned *)0, cfile); |
d758ad8c | 3383 | if (!parse_if_statement (&(*result) -> data.ie.fc, |
79a65726 | 3384 | cfile, lose)) { |
166e63eb TL |
3385 | if (!*lose) |
3386 | parse_warn (cfile, | |
3387 | "expecting conditional."); | |
4bd8800e | 3388 | executable_statement_dereference (result, MDL); |
166e63eb TL |
3389 | *lose = 1; |
3390 | return 0; | |
79a65726 | 3391 | } |
be6be08d | 3392 | } else |
d758ad8c | 3393 | (*result) -> data.ie.fc = (struct executable_statement *)0; |
be6be08d | 3394 | |
79a65726 | 3395 | return 1; |
be6be08d TL |
3396 | } |
3397 | ||
3398 | /* | |
3399 | * boolean_expression :== CHECK STRING | | |
3400 | * NOT boolean-expression | | |
3401 | * data-expression EQUAL data-expression | | |
2b965a44 | 3402 | * data-expression BANG EQUAL data-expression | |
dd328225 | 3403 | * data-expression REGEX_MATCH data-expression | |
be6be08d TL |
3404 | * boolean-expression AND boolean-expression | |
3405 | * boolean-expression OR boolean-expression | |
02a015fb | 3406 | * EXISTS OPTION-NAME |
be6be08d TL |
3407 | */ |
3408 | ||
02a015fb TL |
3409 | int parse_boolean_expression (expr, cfile, lose) |
3410 | struct expression **expr; | |
4615d498 | 3411 | struct parse *cfile; |
02a015fb TL |
3412 | int *lose; |
3413 | { | |
3414 | /* Parse an expression... */ | |
3415 | if (!parse_expression (expr, cfile, lose, context_boolean, | |
3416 | (struct expression **)0, expr_none)) | |
3417 | return 0; | |
3418 | ||
08514fb8 TL |
3419 | if (!is_boolean_expression (*expr) && |
3420 | (*expr) -> op != expr_variable_reference && | |
3421 | (*expr) -> op != expr_funcall) { | |
4615d498 | 3422 | parse_warn (cfile, "Expecting a boolean expression."); |
02a015fb | 3423 | *lose = 1; |
4bd8800e | 3424 | expression_dereference (expr, MDL); |
02a015fb TL |
3425 | return 0; |
3426 | } | |
3427 | return 1; | |
3428 | } | |
3429 | ||
d15aa964 TM |
3430 | /* boolean :== ON SEMI | OFF SEMI | TRUE SEMI | FALSE SEMI */ |
3431 | ||
3432 | int parse_boolean (cfile) | |
3433 | struct parse *cfile; | |
3434 | { | |
d15aa964 TM |
3435 | const char *val; |
3436 | int rv; | |
3437 | ||
dd9237c3 | 3438 | (void)next_token(&val, NULL, cfile); |
d15aa964 TM |
3439 | if (!strcasecmp (val, "true") |
3440 | || !strcasecmp (val, "on")) | |
3441 | rv = 1; | |
3442 | else if (!strcasecmp (val, "false") | |
3443 | || !strcasecmp (val, "off")) | |
3444 | rv = 0; | |
3445 | else { | |
3446 | parse_warn (cfile, | |
3447 | "boolean value (true/false/on/off) expected"); | |
3448 | skip_to_semi (cfile); | |
3449 | return 0; | |
3450 | } | |
3451 | parse_semi (cfile); | |
3452 | return rv; | |
3453 | } | |
3454 | ||
3455 | ||
02a015fb TL |
3456 | /* |
3457 | * data_expression :== SUBSTRING LPAREN data-expression COMMA | |
3458 | * numeric-expression COMMA | |
3459 | * numeric-expression RPAREN | | |
a82abfc7 | 3460 | * CONCAT LPAREN data-expression COMMA |
2727c1cf | 3461 | * data-expression RPAREN |
02a015fb | 3462 | * SUFFIX LPAREN data_expression COMMA |
a82abfc7 | 3463 | * numeric-expression RPAREN | |
2727c1cf DH |
3464 | * LCASE LPAREN data_expression RPAREN | |
3465 | * UCASE LPAREN data_expression RPAREN | | |
02a015fb TL |
3466 | * OPTION option_name | |
3467 | * HARDWARE | | |
3468 | * PACKET LPAREN numeric-expression COMMA | |
3469 | * numeric-expression RPAREN | | |
3470 | * STRING | | |
c57db45c | 3471 | * colon_separated_hex_list |
02a015fb TL |
3472 | */ |
3473 | ||
3474 | int parse_data_expression (expr, cfile, lose) | |
3475 | struct expression **expr; | |
4615d498 | 3476 | struct parse *cfile; |
02a015fb TL |
3477 | int *lose; |
3478 | { | |
3479 | /* Parse an expression... */ | |
3480 | if (!parse_expression (expr, cfile, lose, context_data, | |
3481 | (struct expression **)0, expr_none)) | |
3482 | return 0; | |
3483 | ||
08514fb8 TL |
3484 | if (!is_data_expression (*expr) && |
3485 | (*expr) -> op != expr_variable_reference && | |
3486 | (*expr) -> op != expr_funcall) { | |
98311e4b | 3487 | expression_dereference (expr, MDL); |
4615d498 | 3488 | parse_warn (cfile, "Expecting a data expression."); |
02a015fb TL |
3489 | *lose = 1; |
3490 | return 0; | |
3491 | } | |
3492 | return 1; | |
3493 | } | |
3494 | ||
3495 | /* | |
3496 | * numeric-expression :== EXTRACT_INT LPAREN data-expression | |
3497 | * COMMA number RPAREN | | |
3498 | * NUMBER | |
3499 | */ | |
3500 | ||
3501 | int parse_numeric_expression (expr, cfile, lose) | |
3502 | struct expression **expr; | |
4615d498 | 3503 | struct parse *cfile; |
02a015fb TL |
3504 | int *lose; |
3505 | { | |
3506 | /* Parse an expression... */ | |
3507 | if (!parse_expression (expr, cfile, lose, context_numeric, | |
3508 | (struct expression **)0, expr_none)) | |
3509 | return 0; | |
3510 | ||
08514fb8 TL |
3511 | if (!is_numeric_expression (*expr) && |
3512 | (*expr) -> op != expr_variable_reference && | |
3513 | (*expr) -> op != expr_funcall) { | |
98311e4b | 3514 | expression_dereference (expr, MDL); |
4615d498 | 3515 | parse_warn (cfile, "Expecting a numeric expression."); |
02a015fb TL |
3516 | *lose = 1; |
3517 | return 0; | |
3518 | } | |
3519 | return 1; | |
3520 | } | |
98bf1607 | 3521 | #if defined (NSUPDATE_OLD) |
9fb2fb28 TL |
3522 | /* |
3523 | * dns-expression :== | |
3524 | * UPDATE LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
3525 | * data-expression COMMA numeric-expression RPAREN | |
3526 | * DELETE LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
3527 | * data-expression RPAREN | |
3528 | * EXISTS LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
3529 | * data-expression RPAREN | |
3530 | * NOT EXISTS LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
3531 | * data-expression RPAREN | |
3532 | * ns-class :== IN | CHAOS | HS | NUMBER | |
3533 | * ns-type :== A | PTR | MX | TXT | NUMBER | |
3534 | */ | |
3535 | ||
3536 | int parse_dns_expression (expr, cfile, lose) | |
3537 | struct expression **expr; | |
3538 | struct parse *cfile; | |
3539 | int *lose; | |
3540 | { | |
3541 | /* Parse an expression... */ | |
3542 | if (!parse_expression (expr, cfile, lose, context_dns, | |
3543 | (struct expression **)0, expr_none)) | |
3544 | return 0; | |
3545 | ||
08514fb8 TL |
3546 | if (!is_dns_expression (*expr) && |
3547 | (*expr) -> op != expr_variable_reference && | |
3548 | (*expr) -> op != expr_funcall) { | |
98311e4b | 3549 | expression_dereference (expr, MDL); |
9fb2fb28 TL |
3550 | parse_warn (cfile, "Expecting a dns update subexpression."); |
3551 | *lose = 1; | |
3552 | return 0; | |
3553 | } | |
3554 | return 1; | |
3555 | } | |
98bf1607 | 3556 | #endif /* NSUPDATE_OLD */ |
02a015fb | 3557 | /* Parse a subexpression that does not contain a binary operator. */ |
be6be08d | 3558 | |
02a015fb TL |
3559 | int parse_non_binary (expr, cfile, lose, context) |
3560 | struct expression **expr; | |
4615d498 | 3561 | struct parse *cfile; |
be6be08d | 3562 | int *lose; |
02a015fb | 3563 | enum expression_context context; |
be6be08d | 3564 | { |
02a015fb | 3565 | enum dhcp_token token; |
b1b7b521 | 3566 | const char *val; |
be6be08d | 3567 | struct collection *col; |
08514fb8 | 3568 | struct expression *nexp, **ep; |
b1b7b521 | 3569 | int known; |
98bf1607 SR |
3570 | char *cptr; |
3571 | #if defined (NSUPDATE_OLD) | |
9fb2fb28 | 3572 | enum expr_op opcode; |
f579f39f | 3573 | const char *s; |
08514fb8 | 3574 | unsigned long u; |
98bf1607 | 3575 | #endif |
28868515 | 3576 | isc_result_t status; |
b3519f23 | 3577 | unsigned len; |
be6be08d | 3578 | |
b3519f23 | 3579 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3580 | |
3581 | /* Check for unary operators... */ | |
3582 | switch (token) { | |
3583 | case CHECK: | |
b3519f23 TL |
3584 | token = next_token (&val, (unsigned *)0, cfile); |
3585 | token = next_token (&val, (unsigned *)0, cfile); | |
be6be08d | 3586 | if (token != STRING) { |
4615d498 | 3587 | parse_warn (cfile, "string expected."); |
be6be08d TL |
3588 | skip_to_semi (cfile); |
3589 | *lose = 1; | |
02a015fb | 3590 | return 0; |
be6be08d TL |
3591 | } |
3592 | for (col = collections; col; col = col -> next) | |
3593 | if (!strcmp (col -> name, val)) | |
3594 | break; | |
3595 | if (!col) { | |
4615d498 | 3596 | parse_warn (cfile, "unknown collection."); |
be6be08d | 3597 | *lose = 1; |
02a015fb | 3598 | return 0; |
be6be08d | 3599 | } |
4bd8800e | 3600 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3601 | log_fatal ("can't allocate expression"); |
02a015fb TL |
3602 | (*expr) -> op = expr_check; |
3603 | (*expr) -> data.check = col; | |
3604 | break; | |
be6be08d | 3605 | |
5e6fb153 | 3606 | case TOKEN_NOT: |
b3519f23 | 3607 | token = next_token (&val, (unsigned *)0, cfile); |
98bf1607 | 3608 | #if defined(NSUPDATE_OLD) |
9fb2fb28 | 3609 | if (context == context_dns) { |
b3519f23 | 3610 | token = peek_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3611 | goto not_exists; |
3612 | } | |
98bf1607 | 3613 | #endif |
4bd8800e | 3614 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3615 | log_fatal ("can't allocate expression"); |
02a015fb TL |
3616 | (*expr) -> op = expr_not; |
3617 | if (!parse_non_binary (&(*expr) -> data.not, | |
9a7f6fcd | 3618 | cfile, lose, context_boolean)) { |
be6be08d | 3619 | if (!*lose) { |
4615d498 | 3620 | parse_warn (cfile, "expression expected"); |
be6be08d TL |
3621 | skip_to_semi (cfile); |
3622 | } | |
3623 | *lose = 1; | |
4bd8800e | 3624 | expression_dereference (expr, MDL); |
02a015fb | 3625 | return 0; |
be6be08d | 3626 | } |
9a7f6fcd TL |
3627 | if (!is_boolean_expression ((*expr) -> data.not)) { |
3628 | *lose = 1; | |
3629 | parse_warn (cfile, "boolean expression expected"); | |
3630 | skip_to_semi (cfile); | |
3631 | expression_dereference (expr, MDL); | |
3632 | return 0; | |
3633 | } | |
be6be08d | 3634 | break; |
be6be08d | 3635 | |
fcd9651f | 3636 | case LPAREN: |
b3519f23 | 3637 | token = next_token (&val, (unsigned *)0, cfile); |
fcd9651f TL |
3638 | if (!parse_expression (expr, cfile, lose, context, |
3639 | (struct expression **)0, expr_none)) { | |
3640 | if (!*lose) { | |
3641 | parse_warn (cfile, "expression expected"); | |
3642 | skip_to_semi (cfile); | |
3643 | } | |
3644 | *lose = 1; | |
3645 | return 0; | |
3646 | } | |
b3519f23 | 3647 | token = next_token (&val, (unsigned *)0, cfile); |
fcd9651f TL |
3648 | if (token != RPAREN) { |
3649 | *lose = 1; | |
3650 | parse_warn (cfile, "right paren expected"); | |
3651 | skip_to_semi (cfile); | |
3652 | return 0; | |
3653 | } | |
3654 | break; | |
3655 | ||
02a015fb | 3656 | case EXISTS: |
98bf1607 | 3657 | #if defined(NSUPDATE_OLD) |
9fb2fb28 TL |
3658 | if (context == context_dns) |
3659 | goto ns_exists; | |
98bf1607 | 3660 | #endif |
b3519f23 | 3661 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3662 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3663 | log_fatal ("can't allocate expression"); |
02a015fb | 3664 | (*expr) -> op = expr_exists; |
b1b7b521 | 3665 | known = 0; |
f7fdb216 DH |
3666 | /* Pass reference directly to expression structure. */ |
3667 | status = parse_option_name(cfile, 0, &known, | |
3668 | &(*expr)->data.option); | |
3669 | if (status != ISC_R_SUCCESS || | |
3670 | (*expr)->data.option == NULL) { | |
02a015fb | 3671 | *lose = 1; |
4bd8800e | 3672 | expression_dereference (expr, MDL); |
02a015fb | 3673 | return 0; |
be6be08d | 3674 | } |
02a015fb | 3675 | break; |
be6be08d | 3676 | |
1c5d5731 | 3677 | case STATIC: |
b3519f23 | 3678 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3679 | if (!expression_allocate (expr, MDL)) |
1c5d5731 TL |
3680 | log_fatal ("can't allocate expression"); |
3681 | (*expr) -> op = expr_static; | |
3682 | break; | |
3683 | ||
70330633 | 3684 | case KNOWN: |
b3519f23 | 3685 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3686 | if (!expression_allocate (expr, MDL)) |
70330633 TL |
3687 | log_fatal ("can't allocate expression"); |
3688 | (*expr) -> op = expr_known; | |
3689 | break; | |
3690 | ||
be6be08d | 3691 | case SUBSTRING: |
b3519f23 | 3692 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3693 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3694 | log_fatal ("can't allocate expression"); |
02a015fb | 3695 | (*expr) -> op = expr_substring; |
be6be08d | 3696 | |
b3519f23 | 3697 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3698 | if (token != LPAREN) { |
3699 | nolparen: | |
4bd8800e | 3700 | expression_dereference (expr, MDL); |
4615d498 | 3701 | parse_warn (cfile, "left parenthesis expected."); |
be6be08d | 3702 | *lose = 1; |
02a015fb | 3703 | return 0; |
be6be08d TL |
3704 | } |
3705 | ||
02a015fb TL |
3706 | if (!parse_data_expression (&(*expr) -> data.substring.expr, |
3707 | cfile, lose)) { | |
be6be08d | 3708 | nodata: |
4bd8800e | 3709 | expression_dereference (expr, MDL); |
962dc4ab TL |
3710 | if (!*lose) { |
3711 | parse_warn (cfile, | |
3712 | "expecting data expression."); | |
3713 | skip_to_semi (cfile); | |
3714 | *lose = 1; | |
3715 | } | |
02a015fb | 3716 | return 0; |
be6be08d TL |
3717 | } |
3718 | ||
b3519f23 | 3719 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3720 | if (token != COMMA) { |
3721 | nocomma: | |
4bd8800e | 3722 | expression_dereference (expr, MDL); |
4615d498 | 3723 | parse_warn (cfile, "comma expected."); |
be6be08d | 3724 | *lose = 1; |
02a015fb TL |
3725 | |
3726 | return 0; | |
be6be08d TL |
3727 | } |
3728 | ||
02a015fb TL |
3729 | if (!parse_numeric_expression |
3730 | (&(*expr) -> data.substring.offset,cfile, lose)) { | |
be6be08d TL |
3731 | nonum: |
3732 | if (!*lose) { | |
4615d498 TL |
3733 | parse_warn (cfile, |
3734 | "expecting numeric expression."); | |
be6be08d TL |
3735 | skip_to_semi (cfile); |
3736 | *lose = 1; | |
3737 | } | |
4bd8800e | 3738 | expression_dereference (expr, MDL); |
02a015fb | 3739 | return 0; |
be6be08d TL |
3740 | } |
3741 | ||
b3519f23 | 3742 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3743 | if (token != COMMA) |
3744 | goto nocomma; | |
3745 | ||
02a015fb TL |
3746 | if (!parse_numeric_expression |
3747 | (&(*expr) -> data.substring.len, cfile, lose)) | |
be6be08d TL |
3748 | goto nonum; |
3749 | ||
b3519f23 | 3750 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3751 | if (token != RPAREN) { |
3752 | norparen: | |
4615d498 | 3753 | parse_warn (cfile, "right parenthesis expected."); |
be6be08d | 3754 | *lose = 1; |
4bd8800e | 3755 | expression_dereference (expr, MDL); |
02a015fb | 3756 | return 0; |
be6be08d | 3757 | } |
02a015fb | 3758 | break; |
be6be08d TL |
3759 | |
3760 | case SUFFIX: | |
b3519f23 | 3761 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3762 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3763 | log_fatal ("can't allocate expression"); |
02a015fb | 3764 | (*expr) -> op = expr_suffix; |
be6be08d | 3765 | |
b3519f23 | 3766 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3767 | if (token != LPAREN) |
3768 | goto nolparen; | |
3769 | ||
02a015fb TL |
3770 | if (!parse_data_expression (&(*expr) -> data.suffix.expr, |
3771 | cfile, lose)) | |
be6be08d TL |
3772 | goto nodata; |
3773 | ||
b3519f23 | 3774 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3775 | if (token != COMMA) |
3776 | goto nocomma; | |
3777 | ||
b0f452b3 TL |
3778 | if (!parse_numeric_expression (&(*expr) -> data.suffix.len, |
3779 | cfile, lose)) | |
be6be08d TL |
3780 | goto nonum; |
3781 | ||
b3519f23 | 3782 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3783 | if (token != RPAREN) |
3784 | goto norparen; | |
02a015fb | 3785 | break; |
be6be08d | 3786 | |
2727c1cf DH |
3787 | case LCASE: |
3788 | token = next_token(&val, (unsigned *)0, cfile); | |
3789 | if (!expression_allocate(expr, MDL)) | |
3790 | log_fatal ("can't allocate expression"); | |
3791 | (*expr)->op = expr_lcase; | |
3792 | ||
3793 | token = next_token(&val, (unsigned *)0, cfile); | |
3794 | if (token != LPAREN) | |
3795 | goto nolparen; | |
3796 | ||
3797 | if (!parse_data_expression(&(*expr)->data.lcase, cfile, lose)) | |
3798 | goto nodata; | |
3799 | ||
3800 | token = next_token(&val, (unsigned *)0, cfile); | |
3801 | if (token != RPAREN) | |
3802 | goto norparen; | |
3803 | break; | |
3804 | ||
3805 | case UCASE: | |
3806 | token = next_token(&val, (unsigned *)0, cfile); | |
3807 | if (!expression_allocate(expr, MDL)) | |
3808 | log_fatal ("can't allocate expression"); | |
3809 | (*expr)->op = expr_ucase; | |
3810 | ||
3811 | token = next_token (&val, (unsigned *)0, cfile); | |
3812 | if (token != LPAREN) | |
3813 | goto nolparen; | |
3814 | ||
3815 | if (!parse_data_expression(&(*expr)->data.ucase, | |
3816 | cfile, lose)) | |
3817 | goto nodata; | |
3818 | ||
3819 | token = next_token(&val, (unsigned *)0, cfile); | |
3820 | if (token != RPAREN) | |
3821 | goto norparen; | |
3822 | break; | |
3823 | ||
a82abfc7 | 3824 | case CONCAT: |
b3519f23 | 3825 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3826 | if (!expression_allocate (expr, MDL)) |
a82abfc7 TL |
3827 | log_fatal ("can't allocate expression"); |
3828 | (*expr) -> op = expr_concat; | |
3829 | ||
b3519f23 | 3830 | token = next_token (&val, (unsigned *)0, cfile); |
a82abfc7 TL |
3831 | if (token != LPAREN) |
3832 | goto nolparen; | |
3833 | ||
3834 | if (!parse_data_expression (&(*expr) -> data.concat [0], | |
3835 | cfile, lose)) | |
3836 | goto nodata; | |
3837 | ||
b3519f23 | 3838 | token = next_token (&val, (unsigned *)0, cfile); |
a82abfc7 TL |
3839 | if (token != COMMA) |
3840 | goto nocomma; | |
3841 | ||
720c8262 | 3842 | concat_another: |
a82abfc7 TL |
3843 | if (!parse_data_expression (&(*expr) -> data.concat [1], |
3844 | cfile, lose)) | |
3845 | goto nodata; | |
3846 | ||
b3519f23 | 3847 | token = next_token (&val, (unsigned *)0, cfile); |
720c8262 TL |
3848 | |
3849 | if (token == COMMA) { | |
3850 | nexp = (struct expression *)0; | |
4bd8800e | 3851 | if (!expression_allocate (&nexp, MDL)) |
720c8262 TL |
3852 | log_fatal ("can't allocate at CONCAT2"); |
3853 | nexp -> op = expr_concat; | |
4bd8800e TL |
3854 | expression_reference (&nexp -> data.concat [0], |
3855 | *expr, MDL); | |
3856 | expression_dereference (expr, MDL); | |
3857 | expression_reference (expr, nexp, MDL); | |
d758ad8c | 3858 | expression_dereference (&nexp, MDL); |
720c8262 TL |
3859 | goto concat_another; |
3860 | } | |
3861 | ||
a82abfc7 TL |
3862 | if (token != RPAREN) |
3863 | goto norparen; | |
3864 | break; | |
3865 | ||
da38df14 | 3866 | case BINARY_TO_ASCII: |
b3519f23 | 3867 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3868 | if (!expression_allocate (expr, MDL)) |
da38df14 | 3869 | log_fatal ("can't allocate expression"); |
eb42f00e | 3870 | (*expr) -> op = expr_binary_to_ascii; |
da38df14 | 3871 | |
b3519f23 | 3872 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3873 | if (token != LPAREN) |
3874 | goto nolparen; | |
3875 | ||
3876 | if (!parse_numeric_expression (&(*expr) -> data.b2a.base, | |
3877 | cfile, lose)) | |
3878 | goto nodata; | |
3879 | ||
b3519f23 | 3880 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3881 | if (token != COMMA) |
3882 | goto nocomma; | |
3883 | ||
3884 | if (!parse_numeric_expression (&(*expr) -> data.b2a.width, | |
3885 | cfile, lose)) | |
3886 | goto nodata; | |
3887 | ||
b3519f23 | 3888 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3889 | if (token != COMMA) |
3890 | goto nocomma; | |
3891 | ||
c57db45c | 3892 | if (!parse_data_expression (&(*expr) -> data.b2a.separator, |
da38df14 TL |
3893 | cfile, lose)) |
3894 | goto nodata; | |
3895 | ||
b3519f23 | 3896 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3897 | if (token != COMMA) |
3898 | goto nocomma; | |
3899 | ||
3900 | if (!parse_data_expression (&(*expr) -> data.b2a.buffer, | |
3901 | cfile, lose)) | |
3902 | goto nodata; | |
3903 | ||
b3519f23 | 3904 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3905 | if (token != RPAREN) |
3906 | goto norparen; | |
3907 | break; | |
3908 | ||
3909 | case REVERSE: | |
b3519f23 | 3910 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3911 | if (!expression_allocate (expr, MDL)) |
da38df14 | 3912 | log_fatal ("can't allocate expression"); |
eb42f00e | 3913 | (*expr) -> op = expr_reverse; |
da38df14 | 3914 | |
b3519f23 | 3915 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3916 | if (token != LPAREN) |
3917 | goto nolparen; | |
3918 | ||
3919 | if (!(parse_numeric_expression | |
3920 | (&(*expr) -> data.reverse.width, cfile, lose))) | |
3921 | goto nodata; | |
3922 | ||
b3519f23 | 3923 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3924 | if (token != COMMA) |
3925 | goto nocomma; | |
3926 | ||
3927 | if (!(parse_data_expression | |
3928 | (&(*expr) -> data.reverse.buffer, cfile, lose))) | |
3929 | goto nodata; | |
3930 | ||
b3519f23 | 3931 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3932 | if (token != RPAREN) |
3933 | goto norparen; | |
3934 | break; | |
3935 | ||
fdac15d9 | 3936 | case PICK: |
79a65726 TL |
3937 | /* pick (a, b, c) actually produces an internal representation |
3938 | that looks like pick (a, pick (b, pick (c, nil))). */ | |
b3519f23 | 3939 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3940 | if (!(expression_allocate (expr, MDL))) |
79a65726 | 3941 | log_fatal ("can't allocate expression"); |
79a65726 | 3942 | |
b3519f23 | 3943 | token = next_token (&val, (unsigned *)0, cfile); |
79a65726 TL |
3944 | if (token != LPAREN) |
3945 | goto nolparen; | |
3946 | ||
d758ad8c TL |
3947 | nexp = (struct expression *)0; |
3948 | expression_reference (&nexp, *expr, MDL); | |
79a65726 | 3949 | do { |
d758ad8c TL |
3950 | nexp -> op = expr_pick_first_value; |
3951 | if (!(parse_data_expression | |
3952 | (&nexp -> data.pick_first_value.car, | |
3953 | cfile, lose))) | |
3954 | goto nodata; | |
79a65726 | 3955 | |
d758ad8c TL |
3956 | token = next_token (&val, (unsigned *)0, cfile); |
3957 | if (token == COMMA) { | |
3958 | struct expression *foo = (struct expression *)0; | |
3959 | if (!expression_allocate (&foo, MDL)) | |
3960 | log_fatal ("can't allocate expr"); | |
3961 | expression_reference | |
3962 | (&nexp -> data.pick_first_value.cdr, foo, MDL); | |
3963 | expression_dereference (&nexp, MDL); | |
3964 | expression_reference (&nexp, foo, MDL); | |
3965 | expression_dereference (&foo, MDL); | |
3966 | } | |
79a65726 | 3967 | } while (token == COMMA); |
d758ad8c | 3968 | expression_dereference (&nexp, MDL); |
79a65726 TL |
3969 | |
3970 | if (token != RPAREN) | |
3971 | goto norparen; | |
3972 | break; | |
3973 | ||
98bf1607 | 3974 | #if defined(NSUPDATE_OLD) |
9fb2fb28 TL |
3975 | /* dns-update and dns-delete are present for historical |
3976 | purposes, but are deprecated in favor of ns-update | |
3977 | in combination with update, delete, exists and not | |
3978 | exists. */ | |
069e9f4c | 3979 | case DNS_UPDATE: |
9fb2fb28 | 3980 | case DNS_DELETE: |
069e9f4c | 3981 | #if !defined (NSUPDATE) |
4615d498 TL |
3982 | parse_warn (cfile, |
3983 | "Please rebuild dhcpd with --with-nsupdate."); | |
069e9f4c | 3984 | #endif |
b3519f23 | 3985 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 | 3986 | if (token == DNS_UPDATE) |
f579f39f | 3987 | opcode = expr_ns_add; |
9fb2fb28 TL |
3988 | else |
3989 | opcode = expr_ns_delete; | |
3990 | ||
b3519f23 | 3991 | token = next_token (&val, (unsigned *)0, cfile); |
069e9f4c TL |
3992 | if (token != LPAREN) |
3993 | goto nolparen; | |
3994 | ||
b3519f23 | 3995 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3996 | if (token != STRING) { |
3997 | parse_warn (cfile, | |
3998 | "parse_expression: expecting string."); | |
3999 | badnsupdate: | |
069e9f4c TL |
4000 | skip_to_semi (cfile); |
4001 | *lose = 1; | |
4002 | return 0; | |
4003 | } | |
9fb2fb28 TL |
4004 | |
4005 | if (!strcasecmp (val, "a")) | |
08514fb8 | 4006 | u = T_A; |
98bd7ca0 DH |
4007 | else if (!strcasecmp (val, "aaaa")) |
4008 | u = T_AAAA; | |
9fb2fb28 | 4009 | else if (!strcasecmp (val, "ptr")) |
08514fb8 | 4010 | u = T_PTR; |
9fb2fb28 | 4011 | else if (!strcasecmp (val, "mx")) |
08514fb8 | 4012 | u = T_MX; |
9fb2fb28 | 4013 | else if (!strcasecmp (val, "cname")) |
08514fb8 | 4014 | u = T_CNAME; |
9fb2fb28 | 4015 | else if (!strcasecmp (val, "TXT")) |
08514fb8 | 4016 | u = T_TXT; |
9fb2fb28 TL |
4017 | else { |
4018 | parse_warn (cfile, "unexpected rrtype: %s", val); | |
4019 | goto badnsupdate; | |
4020 | } | |
fdac15d9 | 4021 | |
08514fb8 TL |
4022 | s = (opcode == expr_ns_add |
4023 | ? "old-dns-update" | |
4024 | : "old-dns-delete"); | |
4025 | cptr = dmalloc (strlen (s) + 1, MDL); | |
4026 | if (!cptr) | |
4027 | log_fatal ("can't allocate name for %s", s); | |
4028 | strcpy (cptr, s); | |
4bd8800e | 4029 | if (!expression_allocate (expr, MDL)) |
fdac15d9 | 4030 | log_fatal ("can't allocate expression"); |
fdac15d9 | 4031 | (*expr) -> op = expr_funcall; |
08514fb8 | 4032 | (*expr) -> data.funcall.name = cptr; |
fdac15d9 | 4033 | |
08514fb8 TL |
4034 | /* Fake up a function call. */ |
4035 | ep = &(*expr) -> data.funcall.arglist; | |
4036 | if (!expression_allocate (ep, MDL)) | |
4037 | log_fatal ("can't allocate expression"); | |
4038 | (*ep) -> op = expr_arg; | |
4039 | if (!make_const_int (&(*ep) -> data.arg.val, u)) | |
fdac15d9 | 4040 | log_fatal ("can't allocate rrtype value."); |
069e9f4c | 4041 | |
b3519f23 | 4042 | token = next_token (&val, (unsigned *)0, cfile); |
069e9f4c TL |
4043 | if (token != COMMA) |
4044 | goto nocomma; | |
08514fb8 TL |
4045 | ep = &((*ep) -> data.arg.next); |
4046 | if (!expression_allocate (ep, MDL)) | |
4047 | log_fatal ("can't allocate expression"); | |
4048 | (*ep) -> op = expr_arg; | |
4049 | if (!(parse_data_expression (&(*ep) -> data.arg.val, | |
fdac15d9 | 4050 | cfile, lose))) |
069e9f4c TL |
4051 | goto nodata; |
4052 | ||
b3519f23 | 4053 | token = next_token (&val, (unsigned *)0, cfile); |
069e9f4c TL |
4054 | if (token != COMMA) |
4055 | goto nocomma; | |
4056 | ||
08514fb8 TL |
4057 | ep = &((*ep) -> data.arg.next); |
4058 | if (!expression_allocate (ep, MDL)) | |
4059 | log_fatal ("can't allocate expression"); | |
4060 | (*ep) -> op = expr_arg; | |
4061 | if (!(parse_data_expression (&(*ep) -> data.arg.val, | |
fdac15d9 | 4062 | cfile, lose))) |
069e9f4c TL |
4063 | goto nodata; |
4064 | ||
f579f39f | 4065 | if (opcode == expr_ns_add) { |
b3519f23 | 4066 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
4067 | if (token != COMMA) |
4068 | goto nocomma; | |
4069 | ||
08514fb8 TL |
4070 | ep = &((*ep) -> data.arg.next); |
4071 | if (!expression_allocate (ep, MDL)) | |
4072 | log_fatal ("can't allocate expression"); | |
4073 | (*ep) -> op = expr_arg; | |
4074 | if (!(parse_numeric_expression (&(*ep) -> data.arg.val, | |
4075 | cfile, lose))) { | |
9fb2fb28 | 4076 | parse_warn (cfile, |
fdac15d9 | 4077 | "expecting numeric expression."); |
9fb2fb28 TL |
4078 | goto badnsupdate; |
4079 | } | |
069e9f4c | 4080 | } |
08514fb8 | 4081 | |
b3519f23 | 4082 | token = next_token (&val, (unsigned *)0, cfile); |
069e9f4c TL |
4083 | if (token != RPAREN) |
4084 | goto norparen; | |
4085 | break; | |
4086 | ||
9fb2fb28 | 4087 | case NS_UPDATE: |
88886e12 TL |
4088 | #if !defined (NSUPDATE) |
4089 | parse_warn (cfile, | |
4090 | "Please rebuild dhcpd with --with-nsupdate."); | |
4091 | #endif | |
b3519f23 | 4092 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4093 | if (!expression_allocate (expr, MDL)) |
88886e12 | 4094 | log_fatal ("can't allocate expression"); |
88886e12 | 4095 | |
b3519f23 | 4096 | token = next_token (&val, (unsigned *)0, cfile); |
88886e12 TL |
4097 | if (token != LPAREN) |
4098 | goto nolparen; | |
4099 | ||
9fb2fb28 TL |
4100 | nexp = *expr; |
4101 | do { | |
4102 | nexp -> op = expr_dns_transaction; | |
4103 | if (!(parse_dns_expression | |
4104 | (&nexp -> data.dns_transaction.car, | |
4105 | cfile, lose))) | |
4106 | { | |
f579f39f TL |
4107 | if (!*lose) |
4108 | parse_warn | |
4109 | (cfile, | |
4110 | "expecting dns expression."); | |
4bd8800e | 4111 | expression_dereference (expr, MDL); |
9fb2fb28 TL |
4112 | *lose = 1; |
4113 | return 0; | |
4114 | } | |
4115 | ||
b3519f23 | 4116 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
4117 | |
4118 | if (token == COMMA) { | |
4119 | if (!(expression_allocate | |
4120 | (&nexp -> data.dns_transaction.cdr, | |
4bd8800e | 4121 | MDL))) |
9fb2fb28 TL |
4122 | log_fatal |
4123 | ("can't allocate expression"); | |
4124 | nexp = nexp -> data.dns_transaction.cdr; | |
4125 | } | |
4126 | } while (token == COMMA); | |
4127 | ||
4128 | if (token != RPAREN) | |
4129 | goto norparen; | |
4130 | break; | |
4131 | ||
4132 | /* NOT EXISTS is special cased above... */ | |
4133 | not_exists: | |
b3519f23 | 4134 | token = peek_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
4135 | if (token != EXISTS) { |
4136 | parse_warn (cfile, "expecting DNS prerequisite."); | |
4137 | *lose = 1; | |
4138 | return 0; | |
4139 | } | |
9fb2fb28 TL |
4140 | opcode = expr_ns_not_exists; |
4141 | goto nsupdatecode; | |
f579f39f TL |
4142 | case TOKEN_ADD: |
4143 | opcode = expr_ns_add; | |
9fb2fb28 TL |
4144 | goto nsupdatecode; |
4145 | case TOKEN_DELETE: | |
4146 | opcode = expr_ns_delete; | |
4147 | goto nsupdatecode; | |
4148 | ns_exists: | |
4149 | opcode = expr_ns_exists; | |
4150 | nsupdatecode: | |
b3519f23 | 4151 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
4152 | |
4153 | #if !defined (NSUPDATE) | |
4154 | parse_warn (cfile, | |
4155 | "Please rebuild dhcpd with --with-nsupdate."); | |
4156 | #endif | |
4bd8800e | 4157 | if (!expression_allocate (expr, MDL)) |
9fb2fb28 TL |
4158 | log_fatal ("can't allocate expression"); |
4159 | (*expr) -> op = opcode; | |
4160 | ||
b3519f23 | 4161 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
4162 | if (token != LPAREN) |
4163 | goto nolparen; | |
4164 | ||
b3519f23 | 4165 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
4166 | if (!is_identifier (token) && token != NUMBER) { |
4167 | parse_warn (cfile, "expecting identifier or number."); | |
4168 | badnsop: | |
4bd8800e | 4169 | expression_dereference (expr, MDL); |
88886e12 TL |
4170 | skip_to_semi (cfile); |
4171 | *lose = 1; | |
4172 | return 0; | |
4173 | } | |
9fb2fb28 TL |
4174 | |
4175 | if (token == NUMBER) | |
f579f39f | 4176 | (*expr) -> data.ns_add.rrclass = atoi (val); |
9fb2fb28 | 4177 | else if (!strcasecmp (val, "in")) |
f579f39f | 4178 | (*expr) -> data.ns_add.rrclass = C_IN; |
9fb2fb28 | 4179 | else if (!strcasecmp (val, "chaos")) |
f579f39f | 4180 | (*expr) -> data.ns_add.rrclass = C_CHAOS; |
9fb2fb28 | 4181 | else if (!strcasecmp (val, "hs")) |
f579f39f | 4182 | (*expr) -> data.ns_add.rrclass = C_HS; |
9fb2fb28 TL |
4183 | else { |
4184 | parse_warn (cfile, "unexpected rrclass: %s", val); | |
4185 | goto badnsop; | |
4186 | } | |
4187 | ||
b3519f23 | 4188 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4189 | if (token != COMMA) |
4190 | goto nocomma; | |
4191 | ||
b3519f23 | 4192 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
4193 | if (!is_identifier (token) && token != NUMBER) { |
4194 | parse_warn (cfile, "expecting identifier or number."); | |
4195 | goto badnsop; | |
4196 | } | |
4197 | ||
4198 | if (token == NUMBER) | |
f579f39f | 4199 | (*expr) -> data.ns_add.rrtype = atoi (val); |
9fb2fb28 | 4200 | else if (!strcasecmp (val, "a")) |
f579f39f | 4201 | (*expr) -> data.ns_add.rrtype = T_A; |
98bd7ca0 DH |
4202 | else if (!strcasecmp (val, "aaaa")) |
4203 | (*expr) -> data.ns_add.rrtype = T_AAAA; | |
9fb2fb28 | 4204 | else if (!strcasecmp (val, "ptr")) |
f579f39f | 4205 | (*expr) -> data.ns_add.rrtype = T_PTR; |
9fb2fb28 | 4206 | else if (!strcasecmp (val, "mx")) |
f579f39f | 4207 | (*expr) -> data.ns_add.rrtype = T_MX; |
9fb2fb28 | 4208 | else if (!strcasecmp (val, "cname")) |
f579f39f | 4209 | (*expr) -> data.ns_add.rrtype = T_CNAME; |
9fb2fb28 | 4210 | else if (!strcasecmp (val, "TXT")) |
f579f39f | 4211 | (*expr) -> data.ns_add.rrtype = T_TXT; |
9fb2fb28 TL |
4212 | else { |
4213 | parse_warn (cfile, "unexpected rrtype: %s", val); | |
4214 | goto badnsop; | |
4215 | } | |
88886e12 | 4216 | |
b3519f23 | 4217 | token = next_token (&val, (unsigned *)0, cfile); |
88886e12 TL |
4218 | if (token != COMMA) |
4219 | goto nocomma; | |
4220 | ||
4221 | if (!(parse_data_expression | |
f579f39f | 4222 | (&(*expr) -> data.ns_add.rrname, cfile, lose))) |
88886e12 TL |
4223 | goto nodata; |
4224 | ||
b3519f23 | 4225 | token = next_token (&val, (unsigned *)0, cfile); |
88886e12 TL |
4226 | if (token != COMMA) |
4227 | goto nocomma; | |
4228 | ||
4229 | if (!(parse_data_expression | |
f579f39f | 4230 | (&(*expr) -> data.ns_add.rrdata, cfile, lose))) |
88886e12 TL |
4231 | goto nodata; |
4232 | ||
f579f39f | 4233 | if (opcode == expr_ns_add) { |
b3519f23 | 4234 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
4235 | if (token != COMMA) |
4236 | goto nocomma; | |
4237 | ||
4238 | if (!(parse_numeric_expression | |
f579f39f TL |
4239 | (&(*expr) -> data.ns_add.ttl, cfile, |
4240 | lose))) { | |
962dc4ab | 4241 | if (!*lose) |
9fb2fb28 | 4242 | parse_warn (cfile, |
962dc4ab TL |
4243 | "expecting numeric expression."); |
4244 | goto badnsupdate; | |
9fb2fb28 TL |
4245 | } |
4246 | } | |
4247 | ||
b3519f23 | 4248 | token = next_token (&val, (unsigned *)0, cfile); |
88886e12 TL |
4249 | if (token != RPAREN) |
4250 | goto norparen; | |
4251 | break; | |
98bf1607 | 4252 | #endif /* NSUPDATE_OLD */ |
79a65726 TL |
4253 | case OPTION: |
4254 | case CONFIG_OPTION: | |
4bd8800e | 4255 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4256 | log_fatal ("can't allocate expression"); |
cd31814f TL |
4257 | (*expr) -> op = (token == OPTION |
4258 | ? expr_option | |
4259 | : expr_config_option); | |
b3519f23 | 4260 | token = next_token (&val, (unsigned *)0, cfile); |
b1b7b521 | 4261 | known = 0; |
f7fdb216 DH |
4262 | /* Pass reference directly to expression structure. */ |
4263 | status = parse_option_name(cfile, 0, &known, | |
4264 | &(*expr)->data.option); | |
4265 | if (status != ISC_R_SUCCESS || | |
4266 | (*expr)->data.option == NULL) { | |
be6be08d | 4267 | *lose = 1; |
4bd8800e | 4268 | expression_dereference (expr, MDL); |
02a015fb | 4269 | return 0; |
be6be08d | 4270 | } |
02a015fb | 4271 | break; |
be6be08d TL |
4272 | |
4273 | case HARDWARE: | |
b3519f23 | 4274 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4275 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4276 | log_fatal ("can't allocate expression"); |
02a015fb TL |
4277 | (*expr) -> op = expr_hardware; |
4278 | break; | |
be6be08d | 4279 | |
da38df14 | 4280 | case LEASED_ADDRESS: |
b3519f23 | 4281 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4282 | if (!expression_allocate (expr, MDL)) |
da38df14 TL |
4283 | log_fatal ("can't allocate expression"); |
4284 | (*expr) -> op = expr_leased_address; | |
4285 | break; | |
4286 | ||
9a7f6fcd | 4287 | case CLIENT_STATE: |
b3519f23 | 4288 | token = next_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
4289 | if (!expression_allocate (expr, MDL)) |
4290 | log_fatal ("can't allocate expression"); | |
4291 | (*expr) -> op = expr_client_state; | |
4292 | break; | |
4293 | ||
fdac15d9 | 4294 | case FILENAME: |
b3519f23 | 4295 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4296 | if (!expression_allocate (expr, MDL)) |
fdac15d9 TL |
4297 | log_fatal ("can't allocate expression"); |
4298 | (*expr) -> op = expr_filename; | |
4299 | break; | |
4300 | ||
4301 | case SERVER_NAME: | |
b3519f23 | 4302 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4303 | if (!expression_allocate (expr, MDL)) |
fdac15d9 TL |
4304 | log_fatal ("can't allocate expression"); |
4305 | (*expr) -> op = expr_sname; | |
4306 | break; | |
4307 | ||
069e9f4c | 4308 | case LEASE_TIME: |
b3519f23 | 4309 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4310 | if (!expression_allocate (expr, MDL)) |
069e9f4c TL |
4311 | log_fatal ("can't allocate expression"); |
4312 | (*expr) -> op = expr_lease_time; | |
4313 | break; | |
4314 | ||
f579f39f | 4315 | case TOKEN_NULL: |
b3519f23 | 4316 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4317 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4318 | log_fatal ("can't allocate expression"); |
4319 | (*expr) -> op = expr_null; | |
4320 | break; | |
4321 | ||
79a65726 | 4322 | case HOST_DECL_NAME: |
b3519f23 | 4323 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4324 | if (!expression_allocate (expr, MDL)) |
79a65726 TL |
4325 | log_fatal ("can't allocate expression"); |
4326 | (*expr) -> op = expr_host_decl_name; | |
4327 | break; | |
4328 | ||
98bf1607 | 4329 | #if defined(NSUPDATE_OLD) |
846d7d54 | 4330 | case UPDATED_DNS_RR: |
b3519f23 | 4331 | token = next_token (&val, (unsigned *)0, cfile); |
06a8567c | 4332 | |
b3519f23 | 4333 | token = next_token (&val, (unsigned *)0, cfile); |
846d7d54 TL |
4334 | if (token != LPAREN) |
4335 | goto nolparen; | |
f579f39f | 4336 | |
b3519f23 | 4337 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4338 | if (token != STRING) { |
4339 | parse_warn (cfile, "expecting string."); | |
4340 | bad_rrtype: | |
4341 | *lose = 1; | |
4342 | return 0; | |
4343 | } | |
4344 | if (!strcasecmp (val, "a")) | |
4345 | s = "ddns-fwd-name"; | |
4346 | else if (!strcasecmp (val, "ptr")) | |
4347 | s = "ddns-rev-name"; | |
4348 | else { | |
4349 | parse_warn (cfile, "invalid DNS rrtype: %s", val); | |
4350 | goto bad_rrtype; | |
4351 | } | |
846d7d54 | 4352 | |
b3519f23 | 4353 | token = next_token (&val, (unsigned *)0, cfile); |
846d7d54 TL |
4354 | if (token != RPAREN) |
4355 | goto norparen; | |
4356 | ||
4bd8800e | 4357 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4358 | log_fatal ("can't allocate expression"); |
4359 | (*expr) -> op = expr_variable_reference; | |
4360 | (*expr) -> data.variable = | |
fdac15d9 | 4361 | dmalloc (strlen (s) + 1, MDL); |
f579f39f TL |
4362 | if (!(*expr) -> data.variable) |
4363 | log_fatal ("can't allocate variable name."); | |
4364 | strcpy ((*expr) -> data.variable, s); | |
06a8567c | 4365 | break; |
98bf1607 | 4366 | #endif /* NSUPDATE_OLD */ |
be6be08d | 4367 | case PACKET: |
b3519f23 | 4368 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4369 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4370 | log_fatal ("can't allocate expression"); |
02a015fb | 4371 | (*expr) -> op = expr_packet; |
be6be08d | 4372 | |
b3519f23 | 4373 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4374 | if (token != LPAREN) |
4375 | goto nolparen; | |
4376 | ||
02a015fb TL |
4377 | if (!parse_numeric_expression (&(*expr) -> data.packet.offset, |
4378 | cfile, lose)) | |
be6be08d TL |
4379 | goto nonum; |
4380 | ||
b3519f23 | 4381 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4382 | if (token != COMMA) |
4383 | goto nocomma; | |
4384 | ||
02a015fb TL |
4385 | if (!parse_numeric_expression (&(*expr) -> data.packet.len, |
4386 | cfile, lose)) | |
be6be08d TL |
4387 | goto nonum; |
4388 | ||
b3519f23 | 4389 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4390 | if (token != RPAREN) |
4391 | goto norparen; | |
02a015fb | 4392 | break; |
be6be08d TL |
4393 | |
4394 | case STRING: | |
b3519f23 | 4395 | token = next_token (&val, &len, cfile); |
b1b7b521 | 4396 | if (!make_const_data (expr, (const unsigned char *)val, |
d758ad8c | 4397 | len, 1, 1, MDL)) |
8ae2d595 | 4398 | log_fatal ("can't make constant string expression."); |
02a015fb | 4399 | break; |
be6be08d | 4400 | |
be6be08d | 4401 | case EXTRACT_INT: |
b3519f23 TL |
4402 | token = next_token (&val, (unsigned *)0, cfile); |
4403 | token = next_token (&val, (unsigned *)0, cfile); | |
be6be08d | 4404 | if (token != LPAREN) { |
4615d498 | 4405 | parse_warn (cfile, "left parenthesis expected."); |
be6be08d | 4406 | *lose = 1; |
02a015fb | 4407 | return 0; |
be6be08d TL |
4408 | } |
4409 | ||
4bd8800e | 4410 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4411 | log_fatal ("can't allocate expression"); |
02a015fb TL |
4412 | |
4413 | if (!parse_data_expression (&(*expr) -> data.extract_int, | |
4414 | cfile, lose)) { | |
962dc4ab TL |
4415 | if (!*lose) { |
4416 | parse_warn (cfile, | |
4417 | "expecting data expression."); | |
4418 | skip_to_semi (cfile); | |
4419 | *lose = 1; | |
4420 | } | |
4bd8800e | 4421 | expression_dereference (expr, MDL); |
02a015fb | 4422 | return 0; |
be6be08d TL |
4423 | } |
4424 | ||
b3519f23 | 4425 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4426 | if (token != COMMA) { |
4615d498 | 4427 | parse_warn (cfile, "comma expected."); |
be6be08d | 4428 | *lose = 1; |
4bd8800e | 4429 | expression_dereference (expr, MDL); |
02a015fb | 4430 | return 0; |
be6be08d TL |
4431 | } |
4432 | ||
b3519f23 | 4433 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4434 | if (token != NUMBER) { |
4615d498 | 4435 | parse_warn (cfile, "number expected."); |
be6be08d | 4436 | *lose = 1; |
4bd8800e | 4437 | expression_dereference (expr, MDL); |
02a015fb | 4438 | return 0; |
be6be08d | 4439 | } |
be6be08d TL |
4440 | switch (atoi (val)) { |
4441 | case 8: | |
02a015fb | 4442 | (*expr) -> op = expr_extract_int8; |
be6be08d TL |
4443 | break; |
4444 | ||
4445 | case 16: | |
02a015fb | 4446 | (*expr) -> op = expr_extract_int16; |
be6be08d TL |
4447 | break; |
4448 | ||
4449 | case 32: | |
02a015fb | 4450 | (*expr) -> op = expr_extract_int32; |
be6be08d TL |
4451 | break; |
4452 | ||
4453 | default: | |
4615d498 TL |
4454 | parse_warn (cfile, |
4455 | "unsupported integer size %d", atoi (val)); | |
be6be08d TL |
4456 | *lose = 1; |
4457 | skip_to_semi (cfile); | |
4bd8800e | 4458 | expression_dereference (expr, MDL); |
02a015fb | 4459 | return 0; |
be6be08d TL |
4460 | } |
4461 | ||
b3519f23 | 4462 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4463 | if (token != RPAREN) { |
4615d498 | 4464 | parse_warn (cfile, "right parenthesis expected."); |
be6be08d | 4465 | *lose = 1; |
4bd8800e | 4466 | expression_dereference (expr, MDL); |
02a015fb | 4467 | return 0; |
be6be08d | 4468 | } |
02a015fb | 4469 | break; |
be6be08d | 4470 | |
20c4e94d | 4471 | case ENCODE_INT: |
b3519f23 TL |
4472 | token = next_token (&val, (unsigned *)0, cfile); |
4473 | token = next_token (&val, (unsigned *)0, cfile); | |
20c4e94d | 4474 | if (token != LPAREN) { |
4615d498 | 4475 | parse_warn (cfile, "left parenthesis expected."); |
20c4e94d TL |
4476 | *lose = 1; |
4477 | return 0; | |
4478 | } | |
4479 | ||
4bd8800e | 4480 | if (!expression_allocate (expr, MDL)) |
20c4e94d TL |
4481 | log_fatal ("can't allocate expression"); |
4482 | ||
4483 | if (!parse_numeric_expression (&(*expr) -> data.encode_int, | |
4484 | cfile, lose)) { | |
4615d498 | 4485 | parse_warn (cfile, "expecting numeric expression."); |
20c4e94d TL |
4486 | skip_to_semi (cfile); |
4487 | *lose = 1; | |
4bd8800e | 4488 | expression_dereference (expr, MDL); |
20c4e94d TL |
4489 | return 0; |
4490 | } | |
4491 | ||
b3519f23 | 4492 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4493 | if (token != COMMA) { |
4615d498 | 4494 | parse_warn (cfile, "comma expected."); |
20c4e94d | 4495 | *lose = 1; |
4bd8800e | 4496 | expression_dereference (expr, MDL); |
20c4e94d TL |
4497 | return 0; |
4498 | } | |
4499 | ||
b3519f23 | 4500 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4501 | if (token != NUMBER) { |
4615d498 | 4502 | parse_warn (cfile, "number expected."); |
20c4e94d | 4503 | *lose = 1; |
4bd8800e | 4504 | expression_dereference (expr, MDL); |
20c4e94d TL |
4505 | return 0; |
4506 | } | |
4507 | switch (atoi (val)) { | |
4508 | case 8: | |
4509 | (*expr) -> op = expr_encode_int8; | |
4510 | break; | |
4511 | ||
4512 | case 16: | |
4513 | (*expr) -> op = expr_encode_int16; | |
4514 | break; | |
4515 | ||
4516 | case 32: | |
4517 | (*expr) -> op = expr_encode_int32; | |
4518 | break; | |
4519 | ||
4520 | default: | |
4615d498 TL |
4521 | parse_warn (cfile, |
4522 | "unsupported integer size %d", atoi (val)); | |
20c4e94d TL |
4523 | *lose = 1; |
4524 | skip_to_semi (cfile); | |
4bd8800e | 4525 | expression_dereference (expr, MDL); |
20c4e94d TL |
4526 | return 0; |
4527 | } | |
4528 | ||
b3519f23 | 4529 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4530 | if (token != RPAREN) { |
4615d498 | 4531 | parse_warn (cfile, "right parenthesis expected."); |
20c4e94d | 4532 | *lose = 1; |
4bd8800e | 4533 | expression_dereference (expr, MDL); |
20c4e94d TL |
4534 | return 0; |
4535 | } | |
4536 | break; | |
4537 | ||
be6be08d | 4538 | case NUMBER: |
02a015fb TL |
4539 | /* If we're in a numeric context, this should just be a |
4540 | number, by itself. */ | |
f579f39f TL |
4541 | if (context == context_numeric || |
4542 | context == context_data_or_numeric) { | |
b3519f23 | 4543 | next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4544 | if (!expression_allocate (expr, MDL)) |
be19167d | 4545 | log_fatal ("can't allocate expression"); |
02a015fb TL |
4546 | (*expr) -> op = expr_const_int; |
4547 | (*expr) -> data.const_int = atoi (val); | |
4548 | break; | |
4549 | } | |
be6be08d | 4550 | |
02a015fb | 4551 | case NUMBER_OR_NAME: |
4bd8800e | 4552 | if (!expression_allocate (expr, MDL)) |
be19167d TL |
4553 | log_fatal ("can't allocate expression"); |
4554 | ||
02a015fb TL |
4555 | (*expr) -> op = expr_const_data; |
4556 | if (!parse_cshl (&(*expr) -> data.const_data, cfile)) { | |
4bd8800e | 4557 | expression_dereference (expr, MDL); |
02a015fb TL |
4558 | return 0; |
4559 | } | |
4560 | break; | |
4561 | ||
f579f39f TL |
4562 | case NS_FORMERR: |
4563 | known = FORMERR; | |
9a7f6fcd | 4564 | goto ns_const; |
f579f39f | 4565 | ns_const: |
b3519f23 | 4566 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4567 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4568 | log_fatal ("can't allocate expression"); |
4569 | (*expr) -> op = expr_const_int; | |
4570 | (*expr) -> data.const_int = known; | |
4571 | break; | |
4572 | ||
4573 | case NS_NOERROR: | |
1898dcf7 | 4574 | known = ISC_R_SUCCESS; |
f579f39f TL |
4575 | goto ns_const; |
4576 | ||
4577 | case NS_NOTAUTH: | |
98bf1607 | 4578 | known = DHCP_R_NOTAUTH; |
f579f39f TL |
4579 | goto ns_const; |
4580 | ||
4581 | case NS_NOTIMP: | |
1898dcf7 | 4582 | known = ISC_R_NOTIMPLEMENTED; |
f579f39f TL |
4583 | goto ns_const; |
4584 | ||
4585 | case NS_NOTZONE: | |
98bf1607 | 4586 | known = DHCP_R_NOTZONE; |
f579f39f TL |
4587 | goto ns_const; |
4588 | ||
4589 | case NS_NXDOMAIN: | |
98bf1607 | 4590 | known = DHCP_R_NXDOMAIN; |
f579f39f TL |
4591 | goto ns_const; |
4592 | ||
4593 | case NS_NXRRSET: | |
98bf1607 | 4594 | known = DHCP_R_NXRRSET; |
f579f39f TL |
4595 | goto ns_const; |
4596 | ||
4597 | case NS_REFUSED: | |
98bf1607 | 4598 | known = DHCP_R_REFUSED; |
f579f39f TL |
4599 | goto ns_const; |
4600 | ||
4601 | case NS_SERVFAIL: | |
98bf1607 | 4602 | known = DHCP_R_SERVFAIL; |
f579f39f TL |
4603 | goto ns_const; |
4604 | ||
4605 | case NS_YXDOMAIN: | |
98bf1607 | 4606 | known = DHCP_R_YXDOMAIN; |
f579f39f TL |
4607 | goto ns_const; |
4608 | ||
4609 | case NS_YXRRSET: | |
98bf1607 | 4610 | known = DHCP_R_YXRRSET; |
f579f39f TL |
4611 | goto ns_const; |
4612 | ||
8a34e9e6 TL |
4613 | case BOOTING: |
4614 | known = S_INIT; | |
4615 | goto ns_const; | |
4616 | ||
4617 | case REBOOT: | |
4618 | known = S_REBOOTING; | |
4619 | goto ns_const; | |
4620 | ||
4621 | case SELECT: | |
4622 | known = S_SELECTING; | |
4623 | goto ns_const; | |
4624 | ||
543ce4f8 TL |
4625 | case REQUEST: |
4626 | known = S_REQUESTING; | |
4627 | goto ns_const; | |
4628 | ||
8a34e9e6 TL |
4629 | case BOUND: |
4630 | known = S_BOUND; | |
4631 | goto ns_const; | |
4632 | ||
4633 | case RENEW: | |
4634 | known = S_RENEWING; | |
4635 | goto ns_const; | |
4636 | ||
4637 | case REBIND: | |
4638 | known = S_REBINDING; | |
4639 | goto ns_const; | |
4640 | ||
f579f39f | 4641 | case DEFINED: |
b3519f23 TL |
4642 | token = next_token (&val, (unsigned *)0, cfile); |
4643 | token = next_token (&val, (unsigned *)0, cfile); | |
f579f39f TL |
4644 | if (token != LPAREN) |
4645 | goto nolparen; | |
4646 | ||
b3519f23 | 4647 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4648 | if (token != NAME && token != NUMBER_OR_NAME) { |
4649 | parse_warn (cfile, "%s can't be a variable name", val); | |
4650 | skip_to_semi (cfile); | |
4651 | *lose = 1; | |
4652 | return 0; | |
4653 | } | |
4654 | ||
4bd8800e | 4655 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4656 | log_fatal ("can't allocate expression"); |
4657 | (*expr) -> op = expr_variable_exists; | |
fdac15d9 | 4658 | (*expr) -> data.variable = dmalloc (strlen (val) + 1, MDL); |
f579f39f TL |
4659 | if (!(*expr)->data.variable) |
4660 | log_fatal ("can't allocate variable name"); | |
4661 | strcpy ((*expr) -> data.variable, val); | |
b3519f23 | 4662 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4663 | if (token != RPAREN) |
4664 | goto norparen; | |
4665 | break; | |
4666 | ||
33ea4622 DH |
4667 | /* This parses 'gethostname()'. */ |
4668 | case GETHOSTNAME: | |
4669 | token = next_token(&val, NULL, cfile); | |
4670 | if (!expression_allocate(expr, MDL)) | |
4671 | log_fatal("can't allocate expression"); | |
4672 | (*expr)->op = expr_gethostname; | |
4673 | ||
4674 | token = next_token(NULL, NULL, cfile); | |
4675 | if (token != LPAREN) | |
4676 | goto nolparen; | |
4677 | ||
4678 | token = next_token(NULL, NULL, cfile); | |
4679 | if (token != RPAREN) | |
4680 | goto norparen; | |
023fbaa0 TM |
4681 | break; |
4682 | ||
4683 | case GETHOSTBYNAME: | |
4684 | token = next_token(&val, NULL, cfile); | |
4685 | ||
4686 | token = next_token(NULL, NULL, cfile); | |
4687 | if (token != LPAREN) | |
4688 | goto nolparen; | |
4689 | ||
4690 | /* The argument is a quoted string. */ | |
4691 | token = next_token(&val, NULL, cfile); | |
4692 | if (token != STRING) { | |
4693 | parse_warn(cfile, "Expecting quoted literal: " | |
4694 | "\"foo.example.com\""); | |
4695 | skip_to_semi(cfile); | |
4696 | *lose = 1; | |
4697 | return 0; | |
4698 | } | |
4699 | if (!make_host_lookup(expr, val)) | |
4700 | log_fatal("Error creating gethostbyname() internal " | |
4701 | "record. (%s:%d)", MDL); | |
4702 | ||
4703 | token = next_token(NULL, NULL, cfile); | |
4704 | if (token != RPAREN) | |
4705 | goto norparen; | |
33ea4622 DH |
4706 | break; |
4707 | ||
02a015fb | 4708 | /* Not a valid start to an expression... */ |
be6be08d | 4709 | default: |
f579f39f TL |
4710 | if (token != NAME && token != NUMBER_OR_NAME) |
4711 | return 0; | |
4712 | ||
b3519f23 | 4713 | token = next_token (&val, (unsigned *)0, cfile); |
08514fb8 TL |
4714 | |
4715 | /* Save the name of the variable being referenced. */ | |
4716 | cptr = dmalloc (strlen (val) + 1, MDL); | |
4717 | if (!cptr) | |
4718 | log_fatal ("can't allocate variable name"); | |
4719 | strcpy (cptr, val); | |
4720 | ||
4721 | /* Simple variable reference, as far as we can tell. */ | |
b3519f23 | 4722 | token = peek_token (&val, (unsigned *)0, cfile); |
08514fb8 TL |
4723 | if (token != LPAREN) { |
4724 | if (!expression_allocate (expr, MDL)) | |
4725 | log_fatal ("can't allocate expression"); | |
4726 | (*expr) -> op = expr_variable_reference; | |
4727 | (*expr) -> data.variable = cptr; | |
4728 | break; | |
4729 | } | |
4730 | ||
b3519f23 | 4731 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4732 | if (!expression_allocate (expr, MDL)) |
f579f39f | 4733 | log_fatal ("can't allocate expression"); |
08514fb8 TL |
4734 | (*expr) -> op = expr_funcall; |
4735 | (*expr) -> data.funcall.name = cptr; | |
4736 | ||
4737 | /* Now parse the argument list. */ | |
4738 | ep = &(*expr) -> data.funcall.arglist; | |
4739 | do { | |
4740 | if (!expression_allocate (ep, MDL)) | |
4741 | log_fatal ("can't allocate expression"); | |
4742 | (*ep) -> op = expr_arg; | |
4743 | if (!parse_expression (&(*ep) -> data.arg.val, | |
4744 | cfile, lose, context_any, | |
4745 | (struct expression **)0, | |
4746 | expr_none)) { | |
4747 | if (!*lose) { | |
4748 | parse_warn (cfile, | |
4749 | "expecting expression."); | |
4750 | *lose = 1; | |
4751 | } | |
4752 | skip_to_semi (cfile); | |
4753 | expression_dereference (expr, MDL); | |
4754 | return 0; | |
4755 | } | |
4756 | ep = &((*ep) -> data.arg.next); | |
b3519f23 | 4757 | token = next_token (&val, (unsigned *)0, cfile); |
08514fb8 TL |
4758 | } while (token == COMMA); |
4759 | if (token != RPAREN) { | |
4760 | parse_warn (cfile, "Right parenthesis expected."); | |
4761 | skip_to_semi (cfile); | |
4762 | *lose = 1; | |
4763 | expression_dereference (expr, MDL); | |
4764 | return 0; | |
4765 | } | |
f579f39f | 4766 | break; |
be6be08d | 4767 | } |
02a015fb | 4768 | return 1; |
be6be08d TL |
4769 | } |
4770 | ||
02a015fb TL |
4771 | /* Parse an expression. */ |
4772 | ||
4773 | int parse_expression (expr, cfile, lose, context, plhs, binop) | |
4774 | struct expression **expr; | |
4615d498 | 4775 | struct parse *cfile; |
02a015fb TL |
4776 | int *lose; |
4777 | enum expression_context context; | |
4778 | struct expression **plhs; | |
4779 | enum expr_op binop; | |
4780 | { | |
4781 | enum dhcp_token token; | |
b1b7b521 | 4782 | const char *val; |
02a015fb | 4783 | struct expression *rhs = (struct expression *)0, *tmp; |
962dc4ab | 4784 | struct expression *lhs = (struct expression *)0; |
02a015fb | 4785 | enum expr_op next_op; |
1898dcf7 TL |
4786 | enum expression_context |
4787 | lhs_context = context_any, | |
4788 | rhs_context = context_any; | |
02a015fb TL |
4789 | |
4790 | /* Consume the left hand side we were passed. */ | |
4791 | if (plhs) { | |
962dc4ab TL |
4792 | expression_reference (&lhs, *plhs, MDL); |
4793 | expression_dereference (plhs, MDL); | |
4794 | } | |
02a015fb TL |
4795 | |
4796 | new_rhs: | |
4797 | if (!parse_non_binary (&rhs, cfile, lose, context)) { | |
4798 | /* If we already have a left-hand side, then it's not | |
4799 | okay for there not to be a right-hand side here, so | |
4800 | we need to flag it as an error. */ | |
4801 | if (lhs) { | |
4802 | if (!*lose) { | |
4615d498 TL |
4803 | parse_warn (cfile, |
4804 | "expecting right-hand side."); | |
02a015fb TL |
4805 | *lose = 1; |
4806 | skip_to_semi (cfile); | |
4807 | } | |
4bd8800e | 4808 | expression_dereference (&lhs, MDL); |
02a015fb TL |
4809 | } |
4810 | return 0; | |
4811 | } | |
4812 | ||
4813 | /* At this point, rhs contains either an entire subexpression, | |
4814 | or at least a left-hand-side. If we do not see a binary token | |
4815 | as the next token, we're done with the expression. */ | |
4816 | ||
b3519f23 | 4817 | token = peek_token (&val, (unsigned *)0, cfile); |
02a015fb | 4818 | switch (token) { |
2b965a44 | 4819 | case BANG: |
b3519f23 TL |
4820 | token = next_token (&val, (unsigned *)0, cfile); |
4821 | token = peek_token (&val, (unsigned *)0, cfile); | |
2b965a44 TL |
4822 | if (token != EQUAL) { |
4823 | parse_warn (cfile, "! in boolean context without ="); | |
4824 | *lose = 1; | |
4825 | skip_to_semi (cfile); | |
4826 | if (lhs) | |
4bd8800e | 4827 | expression_dereference (&lhs, MDL); |
2b965a44 TL |
4828 | return 0; |
4829 | } | |
4830 | next_op = expr_not_equal; | |
1898dcf7 | 4831 | context = expression_context (rhs); |
2b965a44 TL |
4832 | break; |
4833 | ||
02a015fb TL |
4834 | case EQUAL: |
4835 | next_op = expr_equal; | |
1898dcf7 | 4836 | context = expression_context (rhs); |
02a015fb TL |
4837 | break; |
4838 | ||
dd328225 DH |
4839 | case TILDE: |
4840 | #ifdef HAVE_REGEX_H | |
4841 | token = next_token(&val, NULL, cfile); | |
4842 | token = peek_token(&val, NULL, cfile); | |
4843 | ||
4844 | if (token == TILDE) | |
4845 | next_op = expr_iregex_match; | |
4846 | else if (token == EQUAL) | |
4847 | next_op = expr_regex_match; | |
4848 | else { | |
4849 | parse_warn(cfile, "expecting ~= or ~~ operator"); | |
4850 | *lose = 1; | |
4851 | skip_to_semi(cfile); | |
4852 | if (lhs) | |
4853 | expression_dereference(&lhs, MDL); | |
4854 | return 0; | |
4855 | } | |
4856 | ||
4857 | context = expression_context(rhs); | |
4858 | #else | |
4859 | parse_warn(cfile, "No support for regex operator."); | |
4860 | *lose = 1; | |
4861 | skip_to_semi(cfile); | |
4862 | if (lhs != NULL) | |
4863 | expression_dereference(&lhs, MDL); | |
4864 | return 0; | |
4865 | #endif | |
4866 | break; | |
4867 | ||
02a015fb TL |
4868 | case AND: |
4869 | next_op = expr_and; | |
1898dcf7 | 4870 | context = expression_context (rhs); |
02a015fb TL |
4871 | break; |
4872 | ||
4873 | case OR: | |
4874 | next_op = expr_or; | |
1898dcf7 | 4875 | context = expression_context (rhs); |
02a015fb TL |
4876 | break; |
4877 | ||
31cb2a5f TL |
4878 | case PLUS: |
4879 | next_op = expr_add; | |
1898dcf7 | 4880 | context = expression_context (rhs); |
31cb2a5f TL |
4881 | break; |
4882 | ||
4883 | case MINUS: | |
4884 | next_op = expr_subtract; | |
1898dcf7 | 4885 | context = expression_context (rhs); |
31cb2a5f TL |
4886 | break; |
4887 | ||
4888 | case SLASH: | |
4889 | next_op = expr_divide; | |
1898dcf7 | 4890 | context = expression_context (rhs); |
31cb2a5f TL |
4891 | break; |
4892 | ||
4893 | case ASTERISK: | |
4894 | next_op = expr_multiply; | |
1898dcf7 | 4895 | context = expression_context (rhs); |
31cb2a5f TL |
4896 | break; |
4897 | ||
4898 | case PERCENT: | |
4899 | next_op = expr_remainder; | |
1898dcf7 | 4900 | context = expression_context (rhs); |
31cb2a5f TL |
4901 | break; |
4902 | ||
3c98e80b DN |
4903 | case AMPERSAND: |
4904 | next_op = expr_binary_and; | |
1898dcf7 | 4905 | context = expression_context (rhs); |
3c98e80b DN |
4906 | break; |
4907 | ||
4908 | case PIPE: | |
4909 | next_op = expr_binary_or; | |
1898dcf7 | 4910 | context = expression_context (rhs); |
3c98e80b DN |
4911 | break; |
4912 | ||
4913 | case CARET: | |
4914 | next_op = expr_binary_xor; | |
1898dcf7 | 4915 | context = expression_context (rhs); |
3c98e80b DN |
4916 | break; |
4917 | ||
02a015fb TL |
4918 | default: |
4919 | next_op = expr_none; | |
4920 | } | |
4921 | ||
4922 | /* If we have no lhs yet, we just parsed it. */ | |
4923 | if (!lhs) { | |
4924 | /* If there was no operator following what we just parsed, | |
4925 | then we're done - return it. */ | |
4926 | if (next_op == expr_none) { | |
4927 | *expr = rhs; | |
4928 | return 1; | |
4929 | } | |
4930 | lhs = rhs; | |
4931 | rhs = (struct expression *)0; | |
4932 | binop = next_op; | |
b3519f23 | 4933 | next_token (&val, (unsigned *)0, cfile); |
02a015fb TL |
4934 | goto new_rhs; |
4935 | } | |
4936 | ||
98311e4b DH |
4937 | /* If the next binary operator is of greater precedence than the |
4938 | * current operator, then rhs we have parsed so far is actually | |
4939 | * the lhs of the next operator. To get this value, we have to | |
4940 | * recurse. | |
4941 | */ | |
4942 | if (binop != expr_none && next_op != expr_none && | |
4943 | op_precedence (binop, next_op) < 0) { | |
4944 | ||
4945 | /* Eat the subexpression operator token, which we pass to | |
4946 | * parse_expression...we only peek()'d earlier. | |
4947 | */ | |
4948 | token = next_token (&val, (unsigned *)0, cfile); | |
4949 | ||
4950 | /* Continue parsing of the right hand side with that token. */ | |
4951 | tmp = rhs; | |
4952 | rhs = (struct expression *)0; | |
4953 | if (!parse_expression (&rhs, cfile, lose, op_context (next_op), | |
4954 | &tmp, next_op)) { | |
4955 | if (!*lose) { | |
4956 | parse_warn (cfile, | |
4957 | "expecting a subexpression"); | |
4958 | *lose = 1; | |
4959 | } | |
4960 | return 0; | |
4961 | } | |
4962 | next_op = expr_none; | |
4963 | } | |
4964 | ||
4965 | if (binop != expr_none) { | |
4966 | rhs_context = expression_context(rhs); | |
4967 | lhs_context = expression_context(lhs); | |
4968 | ||
4969 | if ((rhs_context != context_any) && (lhs_context != context_any) && | |
4970 | (rhs_context != lhs_context)) { | |
4971 | parse_warn (cfile, "illegal expression relating different types"); | |
4972 | skip_to_semi (cfile); | |
4973 | expression_dereference (&rhs, MDL); | |
4974 | expression_dereference (&lhs, MDL); | |
4975 | *lose = 1; | |
4976 | return 0; | |
4977 | } | |
4978 | ||
4979 | switch(binop) { | |
4980 | case expr_not_equal: | |
4981 | case expr_equal: | |
4982 | if ((rhs_context != context_data_or_numeric) && | |
4983 | (rhs_context != context_data) && | |
4984 | (rhs_context != context_numeric) && | |
4985 | (rhs_context != context_any)) { | |
4986 | parse_warn (cfile, "expecting data/numeric expression"); | |
4987 | skip_to_semi (cfile); | |
4988 | expression_dereference (&rhs, MDL); | |
4989 | *lose = 1; | |
4990 | return 0; | |
4991 | } | |
4992 | break; | |
4993 | ||
dd328225 DH |
4994 | case expr_regex_match: |
4995 | #ifdef HAVE_REGEX_H | |
4996 | if (expression_context(rhs) != context_data) { | |
4997 | parse_warn(cfile, "expecting data expression"); | |
4998 | skip_to_semi(cfile); | |
4999 | expression_dereference(&rhs, MDL); | |
5000 | *lose = 1; | |
5001 | return 0; | |
5002 | } | |
5003 | #else | |
5004 | /* It should not be possible to attempt to parse the right | |
5005 | * hand side of an operator there is no support for. | |
5006 | */ | |
5007 | log_fatal("Impossible condition at %s:%d.", MDL); | |
5008 | #endif | |
5009 | break; | |
5010 | ||
98311e4b DH |
5011 | case expr_and: |
5012 | case expr_or: | |
5013 | if ((rhs_context != context_boolean) && | |
5014 | (rhs_context != context_any)) { | |
5015 | parse_warn (cfile, "expecting boolean expressions"); | |
5016 | skip_to_semi (cfile); | |
5017 | expression_dereference (&rhs, MDL); | |
5018 | *lose = 1; | |
5019 | return 0; | |
5020 | } | |
5021 | break; | |
5022 | ||
5023 | case expr_add: | |
5024 | case expr_subtract: | |
5025 | case expr_divide: | |
5026 | case expr_multiply: | |
5027 | case expr_remainder: | |
5028 | case expr_binary_and: | |
5029 | case expr_binary_or: | |
5030 | case expr_binary_xor: | |
5031 | if ((rhs_context != context_numeric) && | |
5032 | (rhs_context != context_any)) { | |
5033 | parse_warn (cfile, "expecting numeric expressions"); | |
5034 | skip_to_semi (cfile); | |
5035 | expression_dereference (&rhs, MDL); | |
5036 | *lose = 1; | |
5037 | return 0; | |
5038 | } | |
5039 | break; | |
5040 | ||
5041 | default: | |
5042 | break; | |
5043 | } | |
5044 | } | |
5045 | ||
02a015fb TL |
5046 | /* Now, if we didn't find a binary operator, we're done parsing |
5047 | this subexpression, so combine it with the preceding binary | |
5048 | operator and return the result. */ | |
5049 | if (next_op == expr_none) { | |
4bd8800e | 5050 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 5051 | log_fatal ("Can't allocate expression!"); |
02a015fb TL |
5052 | |
5053 | (*expr) -> op = binop; | |
5054 | /* All the binary operators' data union members | |
5055 | are the same, so we'll cheat and use the member | |
5056 | for the equals operator. */ | |
5057 | (*expr) -> data.equal [0] = lhs; | |
5058 | (*expr) -> data.equal [1] = rhs; | |
5059 | return 1; | |
5060 | } | |
5061 | ||
5062 | /* Eat the operator token - we now know it was a binary operator... */ | |
b3519f23 | 5063 | token = next_token (&val, (unsigned *)0, cfile); |
02a015fb | 5064 | |
02a015fb TL |
5065 | /* Now combine the LHS and the RHS using binop. */ |
5066 | tmp = (struct expression *)0; | |
4bd8800e | 5067 | if (!expression_allocate (&tmp, MDL)) |
8ae2d595 | 5068 | log_fatal ("No memory for equal precedence combination."); |
02a015fb TL |
5069 | |
5070 | /* Store the LHS and RHS. */ | |
5071 | tmp -> data.equal [0] = lhs; | |
5072 | tmp -> data.equal [1] = rhs; | |
5073 | tmp -> op = binop; | |
5074 | ||
5075 | lhs = tmp; | |
5076 | tmp = (struct expression *)0; | |
5077 | rhs = (struct expression *)0; | |
5078 | ||
5079 | /* Recursions don't return until we have parsed the end of the | |
5080 | expression, so if we recursed earlier, we can now return what | |
5081 | we got. */ | |
5082 | if (next_op == expr_none) { | |
5083 | *expr = lhs; | |
5084 | return 1; | |
5085 | } | |
5086 | ||
5087 | binop = next_op; | |
5088 | goto new_rhs; | |
5089 | } | |
5090 | ||
be6be08d | 5091 | |
b55d0d5f EH |
5092 | int parse_option_data (expr, cfile, lookups, option) |
5093 | struct expression **expr; | |
5094 | struct parse *cfile; | |
5095 | int lookups; | |
5096 | struct option *option; | |
be6be08d | 5097 | { |
b1b7b521 | 5098 | const char *val; |
d8fc5060 | 5099 | const char *fmt = NULL; |
02a015fb | 5100 | struct expression *tmp; |
b55d0d5f | 5101 | enum dhcp_token token; |
a82abfc7 | 5102 | |
be6be08d | 5103 | do { |
b55d0d5f EH |
5104 | /* |
5105 | * Set a flag if this is an array of a simple type (i.e., | |
5106 | * not an array of pairs of IP addresses, or something like | |
5107 | * that. | |
5108 | */ | |
f800f4f6 | 5109 | int uniform = 0; |
be6be08d | 5110 | |
d8fc5060 TL |
5111 | and_again: |
5112 | /* Set fmt to start of format for 'A' and one char back | |
d5341d9b SK |
5113 | * for 'a'. |
5114 | */ | |
5115 | if ((fmt != NULL) && (fmt != option->format) && (*fmt == 'a')) | |
d8fc5060 | 5116 | fmt -= 1; |
d5341d9b SK |
5117 | else if ((fmt == NULL) || (*fmt == 'A')) |
5118 | fmt = option->format; | |
d8fc5060 TL |
5119 | |
5120 | /* 'a' means always uniform */ | |
1babd56e | 5121 | if ((fmt[0] != 'Z') && (tolower((unsigned char)fmt[1]) == 'a')) |
f800f4f6 | 5122 | uniform = 1; |
d8fc5060 | 5123 | |
f800f4f6 | 5124 | do { |
d8fc5060 | 5125 | if ((*fmt == 'A') || (*fmt == 'a')) |
be6be08d | 5126 | break; |
e1a40211 SR |
5127 | if (*fmt == 'o') { |
5128 | /* consume the optional flag */ | |
5129 | fmt++; | |
d8fc5060 | 5130 | continue; |
e1a40211 SR |
5131 | } |
5132 | ||
5133 | if (fmt[1] == 'o') { | |
5134 | /* | |
5135 | * A value for the current format is | |
5136 | * optional - check to see if the next | |
5137 | * token is a semi-colon if so we don't | |
5138 | * need to parse it and doing so would | |
5139 | * consume the semi-colon which our | |
5140 | * caller is expecting to parse | |
5141 | */ | |
5142 | token = peek_token(&val, (unsigned *)0, | |
5143 | cfile); | |
5144 | if (token == SEMI) { | |
5145 | fmt++; | |
5146 | continue; | |
5147 | } | |
5148 | } | |
b55d0d5f EH |
5149 | |
5150 | tmp = *expr; | |
5151 | *expr = NULL; | |
4cafb815 | 5152 | |
b55d0d5f | 5153 | if (!parse_option_token(expr, cfile, &fmt, tmp, |
4cafb815 | 5154 | uniform, lookups)) { |
d8fc5060 TL |
5155 | if (fmt [1] != 'o') { |
5156 | if (tmp) | |
5157 | expression_dereference (&tmp, | |
5158 | MDL); | |
5159 | return 0; | |
5160 | } | |
b55d0d5f EH |
5161 | *expr = tmp; |
5162 | tmp = NULL; | |
02a015fb | 5163 | } |
4cafb815 | 5164 | if (tmp) |
4bd8800e | 5165 | expression_dereference (&tmp, MDL); |
f800f4f6 | 5166 | |
4cafb815 | 5167 | fmt++; |
f800f4f6 SK |
5168 | } while (*fmt != '\0'); |
5169 | ||
d8fc5060 | 5170 | if ((*fmt == 'A') || (*fmt == 'a')) { |
b3519f23 | 5171 | token = peek_token (&val, (unsigned *)0, cfile); |
d8fc5060 | 5172 | /* Comma means: continue with next element in array */ |
be6be08d | 5173 | if (token == COMMA) { |
b3519f23 TL |
5174 | token = next_token (&val, |
5175 | (unsigned *)0, cfile); | |
be6be08d TL |
5176 | continue; |
5177 | } | |
d8fc5060 TL |
5178 | /* no comma: end of array. |
5179 | 'A' or end of string means: leave the loop */ | |
5180 | if ((*fmt == 'A') || (fmt[1] == '\0')) | |
5181 | break; | |
5182 | /* 'a' means: go on with next char */ | |
5183 | if (*fmt == 'a') { | |
5184 | fmt++; | |
5185 | goto and_again; | |
5186 | } | |
be6be08d | 5187 | } |
d8fc5060 | 5188 | } while ((*fmt == 'A') || (*fmt == 'a')); |
be6be08d | 5189 | |
b55d0d5f EH |
5190 | return 1; |
5191 | } | |
5192 | ||
5193 | /* option-statement :== identifier DOT identifier <syntax> SEMI | |
5194 | | identifier <syntax> SEMI | |
5195 | ||
5196 | Option syntax is handled specially through format strings, so it | |
5197 | would be painful to come up with BNF for it. However, it always | |
5198 | starts as above and ends in a SEMI. */ | |
5199 | ||
5200 | int parse_option_statement (result, cfile, lookups, option, op) | |
5201 | struct executable_statement **result; | |
5202 | struct parse *cfile; | |
5203 | int lookups; | |
5204 | struct option *option; | |
5205 | enum statement_op op; | |
5206 | { | |
5207 | const char *val; | |
5208 | enum dhcp_token token; | |
5209 | struct expression *expr = (struct expression *)0; | |
5210 | int lose; | |
b55d0d5f EH |
5211 | |
5212 | token = peek_token (&val, (unsigned *)0, cfile); | |
4cafb815 | 5213 | if ((token == SEMI) && (option->format[0] != 'Z')) { |
b55d0d5f | 5214 | /* Eat the semicolon... */ |
f800f4f6 SK |
5215 | /* |
5216 | * XXXSK: I'm not sure why we should ever get here, but we | |
5217 | * do during our startup. This confuses things if | |
5218 | * we are parsing a zero-length option, so don't | |
5219 | * eat the semicolon token in that case. | |
5220 | */ | |
b55d0d5f | 5221 | token = next_token (&val, (unsigned *)0, cfile); |
f800f4f6 | 5222 | } else if (token == EQUAL) { |
b55d0d5f EH |
5223 | /* Eat the equals sign. */ |
5224 | token = next_token (&val, (unsigned *)0, cfile); | |
5225 | ||
5226 | /* Parse a data expression and use its value for the data. */ | |
5227 | if (!parse_data_expression (&expr, cfile, &lose)) { | |
5228 | /* In this context, we must have an executable | |
5229 | statement, so if we found something else, it's | |
5230 | still an error. */ | |
5231 | if (!lose) { | |
5232 | parse_warn (cfile, | |
5233 | "expecting a data expression."); | |
5234 | skip_to_semi (cfile); | |
5235 | } | |
5236 | return 0; | |
5237 | } | |
f800f4f6 SK |
5238 | } else { |
5239 | if (! parse_option_data(&expr, cfile, lookups, option)) | |
5240 | return 0; | |
b55d0d5f EH |
5241 | } |
5242 | ||
25541f2f | 5243 | if (!parse_semi (cfile)) |
79a65726 | 5244 | return 0; |
4bd8800e | 5245 | if (!executable_statement_allocate (result, MDL)) |
79a65726 | 5246 | log_fatal ("no memory for option statement."); |
b55d0d5f EH |
5247 | |
5248 | (*result)->op = op; | |
5249 | if (expr && !option_cache (&(*result)->data.option, | |
5250 | NULL, expr, option, MDL)) | |
52c9d530 | 5251 | log_fatal ("no memory for option cache"); |
b55d0d5f | 5252 | |
d758ad8c TL |
5253 | if (expr) |
5254 | expression_dereference (&expr, MDL); | |
b55d0d5f | 5255 | |
79a65726 | 5256 | return 1; |
be6be08d TL |
5257 | } |
5258 | ||
02a015fb TL |
5259 | int parse_option_token (rv, cfile, fmt, expr, uniform, lookups) |
5260 | struct expression **rv; | |
4615d498 | 5261 | struct parse *cfile; |
63a0ff88 | 5262 | const char **fmt; |
be6be08d TL |
5263 | struct expression *expr; |
5264 | int uniform; | |
5265 | int lookups; | |
5266 | { | |
b1b7b521 | 5267 | const char *val; |
02a015fb TL |
5268 | enum dhcp_token token; |
5269 | struct expression *t = (struct expression *)0; | |
be6be08d | 5270 | unsigned char buf [4]; |
b3519f23 | 5271 | unsigned len; |
be6be08d | 5272 | struct iaddr addr; |
28868515 | 5273 | int compress; |
57fbc772 | 5274 | isc_boolean_t freeval = ISC_FALSE; |
b49c02cc | 5275 | const char *f, *g; |
42c6a803 | 5276 | struct enumeration_value *e; |
be6be08d | 5277 | |
63a0ff88 | 5278 | switch (**fmt) { |
52c9d530 | 5279 | case 'U': |
98311e4b | 5280 | token = next_token (&val, &len, cfile); |
52c9d530 | 5281 | if (!is_identifier (token)) { |
63a0ff88 | 5282 | if ((*fmt) [1] != 'o') { |
d8fc5060 | 5283 | parse_warn (cfile, "expecting identifier."); |
98311e4b DH |
5284 | if (token != SEMI) |
5285 | skip_to_semi (cfile); | |
d8fc5060 | 5286 | } |
52c9d530 TL |
5287 | return 0; |
5288 | } | |
b1b7b521 | 5289 | if (!make_const_data (&t, (const unsigned char *)val, |
d758ad8c | 5290 | len, 1, 1, MDL)) |
52c9d530 TL |
5291 | log_fatal ("No memory for %s", val); |
5292 | break; | |
5293 | ||
962dc4ab | 5294 | case 'E': |
b49c02cc TL |
5295 | g = strchr (*fmt, '.'); |
5296 | if (!g) { | |
962dc4ab TL |
5297 | parse_warn (cfile, |
5298 | "malformed encapsulation format (bug!)"); | |
5299 | skip_to_semi (cfile); | |
5300 | return 0; | |
5301 | } | |
b49c02cc | 5302 | *fmt = g; |
0f750c4f SR |
5303 | /* FALL THROUGH */ |
5304 | /* to get string value for the option */ | |
be6be08d | 5305 | case 'X': |
b3519f23 | 5306 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d | 5307 | if (token == NUMBER_OR_NAME || token == NUMBER) { |
4bd8800e | 5308 | if (!expression_allocate (&t, MDL)) |
02a015fb | 5309 | return 0; |
8cc4d857 | 5310 | if (!parse_cshl (&t -> data.const_data, cfile)) { |
4bd8800e | 5311 | expression_dereference (&t, MDL); |
01e20b9e | 5312 | return 0; |
8cc4d857 | 5313 | } |
efc79acb | 5314 | t -> op = expr_const_data; |
be6be08d | 5315 | } else { |
98311e4b DH |
5316 | token = next_token (&val, &len, cfile); |
5317 | ||
5318 | if(token == STRING) { | |
5319 | if (!make_const_data (&t, | |
5320 | (const unsigned char *)val, | |
5321 | len, 1, 1, MDL)) | |
5322 | log_fatal ("No memory for \"%s\"", val); | |
98311e4b | 5323 | } else { |
b55d0d5f EH |
5324 | if ((*fmt) [1] != 'o') { |
5325 | parse_warn (cfile, "expecting string " | |
5326 | "or hexadecimal data."); | |
5327 | skip_to_semi (cfile); | |
5328 | } | |
98311e4b | 5329 | return 0; |
d8fc5060 | 5330 | } |
be6be08d TL |
5331 | } |
5332 | break; | |
dba5803b DH |
5333 | |
5334 | case 'D': /* Domain list... */ | |
98bd7ca0 DH |
5335 | if ((*fmt)[1] == 'c') { |
5336 | compress = 1; | |
5337 | /* Skip the compress-flag atom. */ | |
5338 | (*fmt)++; | |
5339 | } else | |
5340 | compress = 0; | |
5341 | ||
5342 | t = parse_domain_list(cfile, compress); | |
dba5803b DH |
5343 | |
5344 | if (!t) { | |
5345 | if ((*fmt)[1] != 'o') | |
5346 | skip_to_semi(cfile); | |
5347 | return 0; | |
5348 | } | |
5349 | ||
5350 | break; | |
5351 | ||
d758ad8c TL |
5352 | case 'd': /* Domain name... */ |
5353 | val = parse_host_name (cfile); | |
5354 | if (!val) { | |
5355 | parse_warn (cfile, "not a valid domain name."); | |
5356 | skip_to_semi (cfile); | |
5357 | return 0; | |
5358 | } | |
5359 | len = strlen (val); | |
57fbc772 | 5360 | freeval = ISC_TRUE; |
d758ad8c TL |
5361 | goto make_string; |
5362 | ||
be6be08d | 5363 | case 't': /* Text string... */ |
98311e4b | 5364 | token = next_token (&val, &len, cfile); |
be6be08d | 5365 | if (token != STRING && !is_identifier (token)) { |
63a0ff88 | 5366 | if ((*fmt) [1] != 'o') { |
d8fc5060 TL |
5367 | parse_warn (cfile, "expecting string."); |
5368 | if (token != SEMI) | |
5369 | skip_to_semi (cfile); | |
5370 | } | |
02a015fb | 5371 | return 0; |
be6be08d | 5372 | } |
d758ad8c | 5373 | make_string: |
b1b7b521 | 5374 | if (!make_const_data (&t, (const unsigned char *)val, |
d758ad8c | 5375 | len, 1, 1, MDL)) |
8ae2d595 | 5376 | log_fatal ("No memory for concatenation"); |
57fbc772 SR |
5377 | if (freeval == ISC_TRUE) { |
5378 | dfree((char *)val, MDL); | |
5379 | freeval = ISC_FALSE; | |
5380 | } | |
be6be08d TL |
5381 | break; |
5382 | ||
42c6a803 | 5383 | case 'N': |
63a0ff88 | 5384 | f = (*fmt) + 1; |
b49c02cc TL |
5385 | g = strchr (*fmt, '.'); |
5386 | if (!g) { | |
42c6a803 TL |
5387 | parse_warn (cfile, "malformed %s (bug!)", |
5388 | "enumeration format"); | |
5389 | foo: | |
5390 | skip_to_semi (cfile); | |
5391 | return 0; | |
5392 | } | |
b49c02cc | 5393 | *fmt = g; |
b3519f23 | 5394 | token = next_token (&val, (unsigned *)0, cfile); |
42c6a803 TL |
5395 | if (!is_identifier (token)) { |
5396 | parse_warn (cfile, | |
5397 | "identifier expected"); | |
5398 | goto foo; | |
5399 | } | |
c54db708 | 5400 | e = find_enumeration_value (f, (*fmt) - f, &len, val); |
42c6a803 TL |
5401 | if (!e) { |
5402 | parse_warn (cfile, "unknown value"); | |
5403 | goto foo; | |
5404 | } | |
c54db708 | 5405 | if (!make_const_data (&t, &e -> value, len, 0, 1, MDL)) |
42c6a803 TL |
5406 | return 0; |
5407 | break; | |
5408 | ||
be6be08d | 5409 | case 'I': /* IP address or hostname. */ |
02a015fb TL |
5410 | if (lookups) { |
5411 | if (!parse_ip_addr_or_hostname (&t, cfile, uniform)) | |
5412 | return 0; | |
5413 | } else { | |
be6be08d | 5414 | if (!parse_ip_addr (cfile, &addr)) |
02a015fb | 5415 | return 0; |
d758ad8c TL |
5416 | if (!make_const_data (&t, addr.iabuf, addr.len, |
5417 | 0, 1, MDL)) | |
02a015fb | 5418 | return 0; |
be6be08d | 5419 | } |
be6be08d | 5420 | break; |
98bd7ca0 DH |
5421 | |
5422 | case '6': /* IPv6 address. */ | |
5423 | if (!parse_ip6_addr(cfile, &addr)) { | |
5424 | return 0; | |
5425 | } | |
5426 | if (!make_const_data(&t, addr.iabuf, addr.len, 0, 1, MDL)) { | |
5427 | return 0; | |
5428 | } | |
5429 | break; | |
be6be08d | 5430 | |
fdac15d9 | 5431 | case 'T': /* Lease interval. */ |
98311e4b | 5432 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
5433 | if (token != INFINITE) |
5434 | goto check_number; | |
5435 | putLong (buf, -1); | |
d758ad8c | 5436 | if (!make_const_data (&t, buf, 4, 0, 1, MDL)) |
fdac15d9 TL |
5437 | return 0; |
5438 | break; | |
5439 | ||
be6be08d TL |
5440 | case 'L': /* Unsigned 32-bit integer... */ |
5441 | case 'l': /* Signed 32-bit integer... */ | |
98311e4b | 5442 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 | 5443 | check_number: |
98311e4b | 5444 | if ((token != NUMBER) && (token != NUMBER_OR_NAME)) { |
be6be08d | 5445 | need_number: |
63a0ff88 | 5446 | if ((*fmt) [1] != 'o') { |
d8fc5060 TL |
5447 | parse_warn (cfile, "expecting number."); |
5448 | if (token != SEMI) | |
5449 | skip_to_semi (cfile); | |
5450 | } | |
02a015fb | 5451 | return 0; |
be6be08d | 5452 | } |
4615d498 | 5453 | convert_num (cfile, buf, val, 0, 32); |
d758ad8c | 5454 | if (!make_const_data (&t, buf, 4, 0, 1, MDL)) |
02a015fb | 5455 | return 0; |
be6be08d | 5456 | break; |
02a015fb | 5457 | |
be6be08d TL |
5458 | case 's': /* Signed 16-bit integer. */ |
5459 | case 'S': /* Unsigned 16-bit integer. */ | |
b3519f23 | 5460 | token = next_token (&val, (unsigned *)0, cfile); |
98311e4b DH |
5461 | if ((token != NUMBER) && (token != NUMBER_OR_NAME)) |
5462 | goto need_number; | |
4615d498 | 5463 | convert_num (cfile, buf, val, 0, 16); |
d758ad8c | 5464 | if (!make_const_data (&t, buf, 2, 0, 1, MDL)) |
02a015fb | 5465 | return 0; |
be6be08d | 5466 | break; |
02a015fb | 5467 | |
be6be08d TL |
5468 | case 'b': /* Signed 8-bit integer. */ |
5469 | case 'B': /* Unsigned 8-bit integer. */ | |
b3519f23 | 5470 | token = next_token (&val, (unsigned *)0, cfile); |
98311e4b DH |
5471 | if ((token != NUMBER) && (token != NUMBER_OR_NAME)) |
5472 | goto need_number; | |
4615d498 | 5473 | convert_num (cfile, buf, val, 0, 8); |
d758ad8c | 5474 | if (!make_const_data (&t, buf, 1, 0, 1, MDL)) |
02a015fb | 5475 | return 0; |
be6be08d | 5476 | break; |
02a015fb | 5477 | |
be6be08d | 5478 | case 'f': /* Boolean flag. */ |
98311e4b | 5479 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 5480 | if (!is_identifier (token)) { |
63a0ff88 | 5481 | if ((*fmt) [1] != 'o') |
d8fc5060 | 5482 | parse_warn (cfile, "expecting identifier."); |
be6be08d | 5483 | bad_flag: |
63a0ff88 | 5484 | if ((*fmt) [1] != 'o') { |
d8fc5060 TL |
5485 | if (token != SEMI) |
5486 | skip_to_semi (cfile); | |
5487 | } | |
02a015fb | 5488 | return 0; |
be6be08d TL |
5489 | } |
5490 | if (!strcasecmp (val, "true") | |
5491 | || !strcasecmp (val, "on")) | |
5492 | buf [0] = 1; | |
5493 | else if (!strcasecmp (val, "false") | |
5494 | || !strcasecmp (val, "off")) | |
5495 | buf [0] = 0; | |
0776fd12 TL |
5496 | else if (!strcasecmp (val, "ignore")) |
5497 | buf [0] = 2; | |
be6be08d | 5498 | else { |
63a0ff88 | 5499 | if ((*fmt) [1] != 'o') |
d8fc5060 | 5500 | parse_warn (cfile, "expecting boolean."); |
be6be08d TL |
5501 | goto bad_flag; |
5502 | } | |
d758ad8c | 5503 | if (!make_const_data (&t, buf, 1, 0, 1, MDL)) |
02a015fb | 5504 | return 0; |
be6be08d | 5505 | break; |
02a015fb | 5506 | |
4cafb815 EH |
5507 | case 'Z': /* Zero-length option. */ |
5508 | token = peek_token (&val, (unsigned *)0, cfile); | |
5509 | if (token != SEMI) { | |
5510 | parse_warn(cfile, "semicolon expected."); | |
5511 | skip_to_semi(cfile); | |
5512 | } | |
5513 | buf[0] = '\0'; | |
f800f4f6 SK |
5514 | if (!make_const_data(&t, /* expression */ |
5515 | buf, /* buffer */ | |
5516 | 0, /* length */ | |
5517 | 0, /* terminated */ | |
5518 | 1, /* allocate */ | |
5519 | MDL)) | |
5520 | return 0; | |
5521 | break; | |
5522 | ||
be6be08d | 5523 | default: |
4cafb815 | 5524 | parse_warn (cfile, "Bad format '%c' in parse_option_token.", |
63a0ff88 | 5525 | **fmt); |
be6be08d | 5526 | skip_to_semi (cfile); |
02a015fb | 5527 | return 0; |
be6be08d | 5528 | } |
02a015fb TL |
5529 | if (expr) { |
5530 | if (!make_concat (rv, expr, t)) | |
5531 | return 0; | |
02a015fb | 5532 | } else |
d758ad8c TL |
5533 | expression_reference (rv, t, MDL); |
5534 | expression_dereference (&t, MDL); | |
02a015fb | 5535 | return 1; |
be6be08d | 5536 | } |
74f45f96 | 5537 | |
9a7f6fcd TL |
5538 | int parse_option_decl (oc, cfile) |
5539 | struct option_cache **oc; | |
5540 | struct parse *cfile; | |
5541 | { | |
5542 | const char *val; | |
5543 | int token; | |
5544 | u_int8_t buf [4]; | |
5545 | u_int8_t hunkbuf [1024]; | |
5546 | unsigned hunkix = 0; | |
42c6a803 | 5547 | const char *fmt, *f; |
4cba29f0 | 5548 | struct option *option=NULL; |
9a7f6fcd TL |
5549 | struct iaddr ip_addr; |
5550 | u_int8_t *dp; | |
98bd7ca0 | 5551 | const u_int8_t *cdp; |
9a7f6fcd TL |
5552 | unsigned len; |
5553 | int nul_term = 0; | |
5554 | struct buffer *bp; | |
5555 | int known = 0; | |
98bd7ca0 DH |
5556 | int compress; |
5557 | struct expression *express = NULL; | |
42c6a803 | 5558 | struct enumeration_value *e; |
f7fdb216 | 5559 | isc_result_t status; |
9a7f6fcd | 5560 | |
f7fdb216 DH |
5561 | status = parse_option_name (cfile, 0, &known, &option); |
5562 | if (status != ISC_R_SUCCESS || option == NULL) | |
9a7f6fcd TL |
5563 | return 0; |
5564 | ||
35de6c8c SR |
5565 | fmt = option->format; |
5566 | ||
9a7f6fcd TL |
5567 | /* Parse the option data... */ |
5568 | do { | |
35de6c8c SR |
5569 | for (; *fmt; fmt++) { |
5570 | if (*fmt == 'A') { | |
5571 | /* 'A' is an array of records, start at | |
5572 | * the beginning | |
5573 | */ | |
5574 | fmt = option->format; | |
5575 | break; | |
5576 | } | |
5577 | ||
5578 | if (*fmt == 'a') { | |
5579 | /* 'a' is an array of the last field, | |
5580 | * back up one format character | |
5581 | */ | |
5582 | fmt--; | |
9a7f6fcd | 5583 | break; |
35de6c8c | 5584 | } |
507fe25f FD |
5585 | if (*fmt == 'o' && fmt != option -> format) |
5586 | continue; | |
9a7f6fcd TL |
5587 | switch (*fmt) { |
5588 | case 'E': | |
5589 | fmt = strchr (fmt, '.'); | |
5590 | if (!fmt) { | |
5591 | parse_warn (cfile, | |
5592 | "malformed %s (bug!)", | |
5593 | "encapsulation format"); | |
f7fdb216 | 5594 | goto parse_exit; |
9a7f6fcd | 5595 | } |
0f750c4f SR |
5596 | /* FALL THROUGH */ |
5597 | /* to get string value for the option */ | |
9a7f6fcd TL |
5598 | case 'X': |
5599 | len = parse_X (cfile, &hunkbuf [hunkix], | |
5600 | sizeof hunkbuf - hunkix); | |
5601 | hunkix += len; | |
5602 | break; | |
5603 | ||
5604 | case 't': /* Text string... */ | |
c54db708 FD |
5605 | token = peek_token (&val, |
5606 | &len, cfile); | |
5607 | if (token == SEMI && fmt[1] == 'o') { | |
5608 | fmt++; | |
5609 | break; | |
5610 | } | |
b3519f23 TL |
5611 | token = next_token (&val, |
5612 | &len, cfile); | |
9a7f6fcd TL |
5613 | if (token != STRING) { |
5614 | parse_warn (cfile, | |
5615 | "expecting string."); | |
f7fdb216 | 5616 | goto parse_exit; |
9a7f6fcd | 5617 | } |
9a7f6fcd TL |
5618 | if (hunkix + len + 1 > sizeof hunkbuf) { |
5619 | parse_warn (cfile, | |
5620 | "option data buffer %s", | |
5621 | "overflow"); | |
f7fdb216 | 5622 | goto parse_exit; |
9a7f6fcd TL |
5623 | } |
5624 | memcpy (&hunkbuf [hunkix], val, len + 1); | |
5625 | nul_term = 1; | |
5626 | hunkix += len; | |
5627 | break; | |
5628 | ||
98bd7ca0 DH |
5629 | case 'D': |
5630 | if (fmt[1] == 'c') { | |
5631 | compress = 1; | |
5632 | fmt++; | |
5633 | } else | |
5634 | compress = 0; | |
5635 | ||
5636 | express = parse_domain_list(cfile, compress); | |
5637 | ||
5638 | if (express == NULL) | |
5639 | goto exit; | |
5640 | ||
5641 | if (express->op != expr_const_data) { | |
5642 | parse_warn(cfile, "unexpected " | |
5643 | "expression"); | |
5644 | goto parse_exit; | |
5645 | } | |
5646 | ||
5647 | len = express->data.const_data.len; | |
5648 | cdp = express->data.const_data.data; | |
5649 | ||
5650 | if ((hunkix + len) > sizeof(hunkbuf)) { | |
5651 | parse_warn(cfile, "option data buffer " | |
5652 | "overflow"); | |
5653 | goto parse_exit; | |
5654 | } | |
5655 | memcpy(&hunkbuf[hunkix], cdp, len); | |
5656 | hunkix += len; | |
5657 | ||
5658 | expression_dereference(&express, MDL); | |
5659 | break; | |
5660 | ||
42c6a803 | 5661 | case 'N': |
c54db708 | 5662 | f = fmt + 1; |
42c6a803 TL |
5663 | fmt = strchr (fmt, '.'); |
5664 | if (!fmt) { | |
5665 | parse_warn (cfile, | |
5666 | "malformed %s (bug!)", | |
5667 | "enumeration format"); | |
f7fdb216 | 5668 | goto parse_exit; |
42c6a803 | 5669 | } |
b3519f23 TL |
5670 | token = next_token (&val, |
5671 | (unsigned *)0, cfile); | |
42c6a803 TL |
5672 | if (!is_identifier (token)) { |
5673 | parse_warn (cfile, | |
5674 | "identifier expected"); | |
f7fdb216 | 5675 | goto parse_exit; |
42c6a803 | 5676 | } |
c54db708 FD |
5677 | e = find_enumeration_value (f, fmt - f, |
5678 | &len, val); | |
42c6a803 TL |
5679 | if (!e) { |
5680 | parse_warn (cfile, | |
5681 | "unknown value"); | |
f7fdb216 | 5682 | goto parse_exit; |
42c6a803 | 5683 | } |
42c6a803 TL |
5684 | dp = &e -> value; |
5685 | goto alloc; | |
5686 | ||
98bd7ca0 DH |
5687 | case '6': |
5688 | if (!parse_ip6_addr(cfile, &ip_addr)) | |
5689 | goto exit; | |
5690 | len = ip_addr.len; | |
5691 | dp = ip_addr.iabuf; | |
5692 | goto alloc; | |
5693 | ||
9a7f6fcd TL |
5694 | case 'I': /* IP address. */ |
5695 | if (!parse_ip_addr (cfile, &ip_addr)) | |
f7fdb216 | 5696 | goto exit; |
9a7f6fcd TL |
5697 | len = ip_addr.len; |
5698 | dp = ip_addr.iabuf; | |
5699 | ||
5700 | alloc: | |
5701 | if (hunkix + len > sizeof hunkbuf) { | |
5702 | parse_warn (cfile, | |
5703 | "option data buffer %s", | |
5704 | "overflow"); | |
f7fdb216 | 5705 | goto parse_exit; |
9a7f6fcd TL |
5706 | } |
5707 | memcpy (&hunkbuf [hunkix], dp, len); | |
5708 | hunkix += len; | |
5709 | break; | |
5710 | ||
5711 | case 'L': /* Unsigned 32-bit integer... */ | |
5712 | case 'l': /* Signed 32-bit integer... */ | |
b3519f23 TL |
5713 | token = next_token (&val, |
5714 | (unsigned *)0, cfile); | |
98311e4b DH |
5715 | if ((token != NUMBER) && |
5716 | (token != NUMBER_OR_NAME)) { | |
9a7f6fcd TL |
5717 | need_number: |
5718 | parse_warn (cfile, | |
5719 | "expecting number."); | |
5720 | if (token != SEMI) | |
f7fdb216 DH |
5721 | goto parse_exit; |
5722 | else | |
5723 | goto exit; | |
9a7f6fcd TL |
5724 | } |
5725 | convert_num (cfile, buf, val, 0, 32); | |
5726 | len = 4; | |
5727 | dp = buf; | |
5728 | goto alloc; | |
5729 | ||
5730 | case 's': /* Signed 16-bit integer. */ | |
5731 | case 'S': /* Unsigned 16-bit integer. */ | |
b3519f23 TL |
5732 | token = next_token (&val, |
5733 | (unsigned *)0, cfile); | |
98311e4b DH |
5734 | if ((token != NUMBER) && |
5735 | (token != NUMBER_OR_NAME)) | |
9a7f6fcd TL |
5736 | goto need_number; |
5737 | convert_num (cfile, buf, val, 0, 16); | |
5738 | len = 2; | |
5739 | dp = buf; | |
5740 | goto alloc; | |
5741 | ||
5742 | case 'b': /* Signed 8-bit integer. */ | |
5743 | case 'B': /* Unsigned 8-bit integer. */ | |
b3519f23 TL |
5744 | token = next_token (&val, |
5745 | (unsigned *)0, cfile); | |
98311e4b DH |
5746 | if ((token != NUMBER) && |
5747 | (token != NUMBER_OR_NAME)) | |
9a7f6fcd TL |
5748 | goto need_number; |
5749 | convert_num (cfile, buf, val, 0, 8); | |
5750 | len = 1; | |
5751 | dp = buf; | |
5752 | goto alloc; | |
5753 | ||
5754 | case 'f': /* Boolean flag. */ | |
b3519f23 TL |
5755 | token = next_token (&val, |
5756 | (unsigned *)0, cfile); | |
9a7f6fcd TL |
5757 | if (!is_identifier (token)) { |
5758 | parse_warn (cfile, | |
5759 | "expecting identifier."); | |
5760 | bad_flag: | |
5761 | if (token != SEMI) | |
f7fdb216 DH |
5762 | goto parse_exit; |
5763 | else | |
5764 | goto exit; | |
9a7f6fcd TL |
5765 | } |
5766 | if (!strcasecmp (val, "true") | |
5767 | || !strcasecmp (val, "on")) | |
5768 | buf [0] = 1; | |
5769 | else if (!strcasecmp (val, "false") | |
5770 | || !strcasecmp (val, "off")) | |
5771 | buf [0] = 0; | |
5772 | else { | |
5773 | parse_warn (cfile, | |
5774 | "expecting boolean."); | |
5775 | goto bad_flag; | |
5776 | } | |
5777 | len = 1; | |
5778 | dp = buf; | |
5779 | goto alloc; | |
5780 | ||
4cafb815 | 5781 | case 'Z': /* Zero-length option */ |
35de6c8c | 5782 | token = peek_token(&val, (unsigned *)0, cfile); |
4cafb815 EH |
5783 | if (token != SEMI) { |
5784 | parse_warn(cfile, | |
5785 | "semicolon expected."); | |
5786 | goto parse_exit; | |
5787 | } | |
5788 | len = 0; | |
5789 | buf[0] = '\0'; | |
5790 | break; | |
5791 | ||
9a7f6fcd TL |
5792 | default: |
5793 | log_error ("parse_option_param: Bad format %c", | |
5794 | *fmt); | |
f7fdb216 | 5795 | goto parse_exit; |
9a7f6fcd TL |
5796 | } |
5797 | } | |
b3519f23 | 5798 | token = next_token (&val, (unsigned *)0, cfile); |
35de6c8c | 5799 | } while (*fmt && token == COMMA); |
9a7f6fcd TL |
5800 | |
5801 | if (token != SEMI) { | |
5802 | parse_warn (cfile, "semicolon expected."); | |
f7fdb216 | 5803 | goto parse_exit; |
9a7f6fcd TL |
5804 | } |
5805 | ||
5806 | bp = (struct buffer *)0; | |
5807 | if (!buffer_allocate (&bp, hunkix + nul_term, MDL)) | |
5808 | log_fatal ("no memory to store option declaration."); | |
9a7f6fcd TL |
5809 | memcpy (bp -> data, hunkbuf, hunkix + nul_term); |
5810 | ||
5811 | if (!option_cache_allocate (oc, MDL)) | |
5812 | log_fatal ("out of memory allocating option cache."); | |
5813 | ||
5814 | (*oc) -> data.buffer = bp; | |
5815 | (*oc) -> data.data = &bp -> data [0]; | |
5816 | (*oc) -> data.terminated = nul_term; | |
5817 | (*oc) -> data.len = hunkix; | |
f7fdb216 DH |
5818 | option_reference(&(*oc)->option, option, MDL); |
5819 | option_dereference(&option, MDL); | |
9a7f6fcd | 5820 | return 1; |
f7fdb216 DH |
5821 | |
5822 | parse_exit: | |
98bd7ca0 DH |
5823 | if (express != NULL) |
5824 | expression_dereference(&express, MDL); | |
f7fdb216 DH |
5825 | skip_to_semi (cfile); |
5826 | exit: | |
5827 | option_dereference(&option, MDL); | |
5828 | ||
5829 | return 0; | |
9a7f6fcd TL |
5830 | } |
5831 | ||
5832 | /* Consider merging parse_cshl into this. */ | |
5833 | ||
5834 | int parse_X (cfile, buf, max) | |
5835 | struct parse *cfile; | |
5836 | u_int8_t *buf; | |
5837 | unsigned max; | |
5838 | { | |
5839 | int token; | |
5840 | const char *val; | |
5841 | unsigned len; | |
9a7f6fcd | 5842 | |
b3519f23 | 5843 | token = peek_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
5844 | if (token == NUMBER_OR_NAME || token == NUMBER) { |
5845 | len = 0; | |
5846 | do { | |
b3519f23 | 5847 | token = next_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
5848 | if (token != NUMBER && token != NUMBER_OR_NAME) { |
5849 | parse_warn (cfile, | |
5850 | "expecting hexadecimal constant."); | |
5851 | skip_to_semi (cfile); | |
5852 | return 0; | |
5853 | } | |
5854 | convert_num (cfile, &buf [len], val, 16, 8); | |
5855 | if (len++ > max) { | |
5856 | parse_warn (cfile, | |
5857 | "hexadecimal constant too long."); | |
5858 | skip_to_semi (cfile); | |
5859 | return 0; | |
5860 | } | |
b3519f23 | 5861 | token = peek_token (&val, (unsigned *)0, cfile); |
9a7f6fcd | 5862 | if (token == COLON) |
b3519f23 TL |
5863 | token = next_token (&val, |
5864 | (unsigned *)0, cfile); | |
9a7f6fcd TL |
5865 | } while (token == COLON); |
5866 | val = (char *)buf; | |
5867 | } else if (token == STRING) { | |
b3519f23 | 5868 | token = next_token (&val, &len, cfile); |
9a7f6fcd TL |
5869 | if (len + 1 > max) { |
5870 | parse_warn (cfile, "string constant too long."); | |
5871 | skip_to_semi (cfile); | |
5872 | return 0; | |
5873 | } | |
5874 | memcpy (buf, val, len + 1); | |
5875 | } else { | |
5876 | parse_warn (cfile, "expecting string or hexadecimal data"); | |
5877 | skip_to_semi (cfile); | |
5878 | return 0; | |
5879 | } | |
5880 | return len; | |
5881 | } | |
5882 | ||
cfdfb9f1 | 5883 | int parse_warn (struct parse *cfile, const char *fmt, ...) |
4bd8800e TL |
5884 | { |
5885 | va_list list; | |
4bd8800e TL |
5886 | char lexbuf [256]; |
5887 | char mbuf [1024]; | |
5888 | char fbuf [1024]; | |
5889 | unsigned i, lix; | |
5890 | ||
5891 | do_percentm (mbuf, fmt); | |
98311e4b DH |
5892 | /* %Audit% This is log output. %2004.06.17,Safe% |
5893 | * If we truncate we hope the user can get a hint from the log. | |
5894 | */ | |
4bd8800e TL |
5895 | snprintf (fbuf, sizeof fbuf, "%s line %d: %s", |
5896 | cfile -> tlname, cfile -> lexline, mbuf); | |
4bd8800e | 5897 | |
cfdfb9f1 | 5898 | va_start (list, fmt); |
4bd8800e TL |
5899 | vsnprintf (mbuf, sizeof mbuf, fbuf, list); |
5900 | va_end (list); | |
5901 | ||
5902 | lix = 0; | |
5903 | for (i = 0; | |
5904 | cfile -> token_line [i] && i < (cfile -> lexchar - 1); i++) { | |
5905 | if (lix < (sizeof lexbuf) - 1) | |
5906 | lexbuf [lix++] = ' '; | |
5907 | if (cfile -> token_line [i] == '\t') { | |
28868515 | 5908 | for (; lix < (sizeof lexbuf) - 1 && (lix & 7); lix++) |
4bd8800e TL |
5909 | lexbuf [lix] = ' '; |
5910 | } | |
5911 | } | |
5912 | lexbuf [lix] = 0; | |
5913 | ||
5914 | #ifndef DEBUG | |
4f9e9f47 TL |
5915 | syslog (log_priority | LOG_ERR, "%s", mbuf); |
5916 | syslog (log_priority | LOG_ERR, "%s", cfile -> token_line); | |
4bd8800e TL |
5917 | if (cfile -> lexchar < 81) |
5918 | syslog (log_priority | LOG_ERR, "%s^", lexbuf); | |
5919 | #endif | |
5920 | ||
5921 | if (log_perror) { | |
ae566556 SR |
5922 | IGNORE_RET (write (STDERR_FILENO, mbuf, strlen (mbuf))); |
5923 | IGNORE_RET (write (STDERR_FILENO, "\n", 1)); | |
5924 | IGNORE_RET (write (STDERR_FILENO, cfile -> token_line, | |
5925 | strlen (cfile -> token_line))); | |
5926 | IGNORE_RET (write (STDERR_FILENO, "\n", 1)); | |
4bd8800e | 5927 | if (cfile -> lexchar < 81) |
ae566556 SR |
5928 | IGNORE_RET (write (STDERR_FILENO, lexbuf, lix)); |
5929 | IGNORE_RET (write (STDERR_FILENO, "^\n", 2)); | |
4bd8800e TL |
5930 | } |
5931 | ||
5932 | cfile -> warnings_occurred = 1; | |
5933 | ||
5934 | return 0; | |
5935 | } | |
dba5803b DH |
5936 | |
5937 | struct expression * | |
98bd7ca0 | 5938 | parse_domain_list(struct parse *cfile, int compress) |
dba5803b DH |
5939 | { |
5940 | const char *val; | |
5941 | enum dhcp_token token = SEMI; | |
5942 | struct expression *t = NULL; | |
5943 | unsigned len, clen = 0; | |
5944 | int result; | |
5945 | unsigned char compbuf[256 * NS_MAXCDNAME]; | |
5946 | const unsigned char *dnptrs[256], **lastdnptr; | |
5947 | ||
5948 | memset(compbuf, 0, sizeof(compbuf)); | |
5949 | memset(dnptrs, 0, sizeof(dnptrs)); | |
5950 | dnptrs[0] = compbuf; | |
5951 | lastdnptr = &dnptrs[255]; | |
5952 | ||
5953 | do { | |
5954 | /* Consume the COMMA token if peeked. */ | |
5955 | if (token == COMMA) | |
5956 | next_token(&val, NULL, cfile); | |
5957 | ||
5958 | /* Get next (or first) value. */ | |
5959 | token = next_token(&val, &len, cfile); | |
5960 | ||
5961 | if (token != STRING) { | |
5962 | parse_warn(cfile, "Expecting a domain string."); | |
5963 | return NULL; | |
5964 | } | |
5965 | ||
98bd7ca0 DH |
5966 | /* If compression pointers are enabled, compress. If not, |
5967 | * just pack the names in series into the buffer. | |
5968 | */ | |
5969 | if (compress) { | |
5970 | result = MRns_name_compress(val, compbuf + clen, | |
5971 | sizeof(compbuf) - clen, | |
5972 | dnptrs, lastdnptr); | |
5973 | ||
5974 | if (result < 0) { | |
5975 | parse_warn(cfile, "Error compressing domain " | |
5976 | "list: %m"); | |
5977 | return NULL; | |
5978 | } | |
dba5803b | 5979 | |
98bd7ca0 DH |
5980 | clen += result; |
5981 | } else { | |
5982 | result = MRns_name_pton(val, compbuf + clen, | |
5983 | sizeof(compbuf) - clen); | |
5984 | ||
5985 | /* result == 1 means the input was fully qualified. | |
5986 | * result == 0 means the input wasn't. | |
5987 | * result == -1 means bad things. | |
5988 | */ | |
5989 | if (result < 0) { | |
5990 | parse_warn(cfile, "Error assembling domain " | |
5991 | "list: %m"); | |
5992 | return NULL; | |
5993 | } | |
5994 | ||
5995 | /* | |
5996 | * We need to figure out how many bytes to increment | |
5997 | * our buffer pointer since pton doesn't tell us. | |
5998 | */ | |
5999 | while (compbuf[clen] != 0) | |
6000 | clen += compbuf[clen] + 1; | |
6001 | ||
6002 | /* Count the last label (0). */ | |
6003 | clen++; | |
dba5803b DH |
6004 | } |
6005 | ||
98bd7ca0 DH |
6006 | if (clen > sizeof(compbuf)) |
6007 | log_fatal("Impossible error at %s:%d", MDL); | |
dba5803b DH |
6008 | |
6009 | token = peek_token(&val, NULL, cfile); | |
6010 | } while (token == COMMA); | |
6011 | ||
6012 | if (!make_const_data(&t, compbuf, clen, 1, 1, MDL)) | |
6013 | log_fatal("No memory for domain list object."); | |
6014 | ||
6015 | return t; | |
6016 | } | |
6017 |