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Commit | Line | Data |
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63115431 TL |
1 | /* parse.c |
2 | ||
3 | Common parser code for dhcpd and dhclient. */ | |
4 | ||
5 | /* | |
90fdd337 | 6 | * Copyright (c) 2004-2015 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 | * |
63115431 TL |
27 | */ |
28 | ||
63115431 | 29 | #include "dhcpd.h" |
fe5b0fdd | 30 | #include <syslog.h> |
63115431 | 31 | |
bf6f8fce FD |
32 | struct collection default_collection = { NULL, "default", NULL }; |
33 | struct collection *collections = &default_collection; | |
34 | ||
42c6a803 TL |
35 | /* Enumerations can be specified in option formats, and are used for |
36 | parsing, so we define the routines that manage them here. */ | |
37 | ||
38 | struct enumeration *enumerations; | |
39 | ||
40 | void add_enumeration (struct enumeration *enumeration) | |
41 | { | |
42 | enumeration -> next = enumerations; | |
43 | enumerations = enumeration; | |
44 | } | |
45 | ||
46 | struct enumeration *find_enumeration (const char *name, int length) | |
47 | { | |
48 | struct enumeration *e; | |
49 | ||
50 | for (e = enumerations; e; e = e -> next) | |
51 | if (strlen (e -> name) == length && | |
52 | !memcmp (e -> name, name, (unsigned)length)) | |
53 | return e; | |
54 | return (struct enumeration *)0; | |
55 | } | |
56 | ||
57 | struct enumeration_value *find_enumeration_value (const char *name, | |
58 | int length, | |
c54db708 | 59 | unsigned *widthp, |
42c6a803 TL |
60 | const char *value) |
61 | { | |
62 | struct enumeration *e; | |
63 | int i; | |
64 | ||
65 | e = find_enumeration (name, length); | |
66 | if (e) { | |
c54db708 FD |
67 | if (widthp != NULL) |
68 | *widthp = e->width; | |
42c6a803 TL |
69 | for (i = 0; e -> values [i].name; i++) { |
70 | if (!strcmp (value, e -> values [i].name)) | |
71 | return &e -> values [i]; | |
72 | } | |
73 | } | |
74 | return (struct enumeration_value *)0; | |
75 | } | |
76 | ||
63115431 | 77 | /* Skip to the semicolon ending the current statement. If we encounter |
71d7e9aa TM |
78 | braces, the matching closing brace terminates the statement. |
79 | */ | |
80 | void skip_to_semi (cfile) | |
81 | struct parse *cfile; | |
82 | { | |
83 | skip_to_rbrace(cfile, 0); | |
84 | } | |
85 | ||
86 | /* Skips everything from the current point upto (and including) the given | |
87 | number of right braces. If we encounter a semicolon but haven't seen a | |
88 | left brace, consume it and return. | |
89 | This lets us skip over: | |
63115431 TL |
90 | |
91 | statement; | |
92 | statement foo bar { } | |
93 | statement foo bar { statement { } } | |
94 | statement} | |
95 | ||
96 | ...et cetera. */ | |
cea8b5c9 | 97 | void skip_to_rbrace (cfile, brace_count) |
4615d498 | 98 | struct parse *cfile; |
cea8b5c9 | 99 | int brace_count; |
63115431 | 100 | { |
02a015fb | 101 | enum dhcp_token token; |
b1b7b521 | 102 | const char *val; |
63115431 | 103 | |
5534984b | 104 | #if defined (DEBUG_TOKENS) |
71d7e9aa | 105 | log_error("skip_to_rbrace: %d\n", brace_count); |
f579f39f | 106 | #endif |
63115431 | 107 | do { |
71d7e9aa | 108 | token = peek_token(&val, NULL, cfile); |
63115431 | 109 | if (token == RBRACE) { |
71d7e9aa TM |
110 | if (brace_count > 0) { |
111 | --brace_count; | |
112 | } | |
113 | ||
114 | if (brace_count == 0) { | |
115 | /* Eat the brace and return. */ | |
116 | skip_token(&val, NULL, cfile); | |
63115431 | 117 | return; |
71d7e9aa | 118 | } |
63115431 TL |
119 | } else if (token == LBRACE) { |
120 | brace_count++; | |
71d7e9aa TM |
121 | } else if (token == SEMI && (brace_count == 0)) { |
122 | /* Eat the semicolon and return. */ | |
123 | skip_token(&val, NULL, cfile); | |
63115431 | 124 | return; |
796ef008 TL |
125 | } else if (token == EOL) { |
126 | /* EOL only happens when parsing /etc/resolv.conf, | |
127 | and we treat it like a semicolon because the | |
128 | resolv.conf file is line-oriented. */ | |
71d7e9aa | 129 | skip_token(&val, NULL, cfile); |
796ef008 | 130 | return; |
63115431 | 131 | } |
71d7e9aa TM |
132 | |
133 | /* Eat the current token */ | |
134 | token = next_token(&val, NULL, cfile); | |
0b69dcc8 | 135 | } while (token != END_OF_FILE); |
63115431 TL |
136 | } |
137 | ||
138 | int parse_semi (cfile) | |
4615d498 | 139 | struct parse *cfile; |
63115431 | 140 | { |
02a015fb | 141 | enum dhcp_token token; |
b1b7b521 | 142 | const char *val; |
63115431 | 143 | |
b3519f23 | 144 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 145 | if (token != SEMI) { |
4615d498 | 146 | parse_warn (cfile, "semicolon expected."); |
63115431 TL |
147 | skip_to_semi (cfile); |
148 | return 0; | |
149 | } | |
150 | return 1; | |
151 | } | |
152 | ||
153 | /* string-parameter :== STRING SEMI */ | |
154 | ||
b3519f23 | 155 | int parse_string (cfile, sptr, lptr) |
4615d498 | 156 | struct parse *cfile; |
b3519f23 TL |
157 | char **sptr; |
158 | unsigned *lptr; | |
63115431 | 159 | { |
b1b7b521 | 160 | const char *val; |
02a015fb | 161 | enum dhcp_token token; |
63115431 | 162 | char *s; |
b3519f23 | 163 | unsigned len; |
63115431 | 164 | |
b3519f23 | 165 | token = next_token (&val, &len, cfile); |
63115431 | 166 | if (token != STRING) { |
f769d5ac | 167 | parse_warn (cfile, "expecting a string"); |
63115431 | 168 | skip_to_semi (cfile); |
b3519f23 | 169 | return 0; |
63115431 | 170 | } |
b3519f23 | 171 | s = (char *)dmalloc (len + 1, MDL); |
63115431 | 172 | if (!s) |
8ae2d595 | 173 | log_fatal ("no memory for string %s.", val); |
b3519f23 | 174 | memcpy (s, val, len + 1); |
63115431 | 175 | |
b3519f23 TL |
176 | if (!parse_semi (cfile)) { |
177 | dfree (s, MDL); | |
178 | return 0; | |
179 | } | |
180 | if (sptr) | |
181 | *sptr = s; | |
182 | else | |
183 | dfree (s, MDL); | |
184 | if (lptr) | |
185 | *lptr = len; | |
186 | return 1; | |
63115431 TL |
187 | } |
188 | ||
be6be08d TL |
189 | /* |
190 | * hostname :== IDENTIFIER | |
191 | * | IDENTIFIER DOT | |
192 | * | hostname DOT IDENTIFIER | |
193 | */ | |
796ef008 TL |
194 | |
195 | char *parse_host_name (cfile) | |
4615d498 | 196 | struct parse *cfile; |
796ef008 | 197 | { |
b1b7b521 | 198 | const char *val; |
02a015fb | 199 | enum dhcp_token token; |
b1b7b521 | 200 | unsigned len = 0; |
796ef008 TL |
201 | char *s; |
202 | char *t; | |
203 | pair c = (pair)0; | |
88ab5737 | 204 | int ltid = 0; |
796ef008 TL |
205 | |
206 | /* Read a dotted hostname... */ | |
207 | do { | |
208 | /* Read a token, which should be an identifier. */ | |
b3519f23 | 209 | token = peek_token (&val, (unsigned *)0, cfile); |
68dda014 TL |
210 | if (!is_identifier (token) && token != NUMBER) |
211 | break; | |
dc9d7b08 | 212 | skip_token(&val, (unsigned *)0, cfile); |
68dda014 | 213 | |
796ef008 | 214 | /* Store this identifier... */ |
fdac15d9 | 215 | if (!(s = (char *)dmalloc (strlen (val) + 1, MDL))) |
8ae2d595 | 216 | log_fatal ("can't allocate temp space for hostname."); |
796ef008 TL |
217 | strcpy (s, val); |
218 | c = cons ((caddr_t)s, c); | |
219 | len += strlen (s) + 1; | |
220 | /* Look for a dot; if it's there, keep going, otherwise | |
221 | we're done. */ | |
b3519f23 | 222 | token = peek_token (&val, (unsigned *)0, cfile); |
88ab5737 | 223 | if (token == DOT) { |
b3519f23 | 224 | token = next_token (&val, (unsigned *)0, cfile); |
88ab5737 TL |
225 | ltid = 1; |
226 | } else | |
227 | ltid = 0; | |
796ef008 TL |
228 | } while (token == DOT); |
229 | ||
fa392aea TL |
230 | /* Should be at least one token. */ |
231 | if (!len) | |
232 | return (char *)0; | |
233 | ||
796ef008 | 234 | /* Assemble the hostname together into a string. */ |
88ab5737 | 235 | if (!(s = (char *)dmalloc (len + ltid, MDL))) |
8ae2d595 | 236 | log_fatal ("can't allocate space for hostname."); |
88ab5737 | 237 | t = s + len + ltid; |
796ef008 | 238 | *--t = 0; |
88ab5737 TL |
239 | if (ltid) |
240 | *--t = '.'; | |
796ef008 TL |
241 | while (c) { |
242 | pair cdr = c -> cdr; | |
b1b7b521 | 243 | unsigned l = strlen ((char *)(c -> car)); |
796ef008 TL |
244 | t -= l; |
245 | memcpy (t, (char *)(c -> car), l); | |
246 | /* Free up temp space. */ | |
fdac15d9 TL |
247 | dfree (c -> car, MDL); |
248 | dfree (c, MDL); | |
796ef008 TL |
249 | c = cdr; |
250 | if (t != s) | |
251 | *--t = '.'; | |
252 | } | |
253 | return s; | |
254 | } | |
255 | ||
be6be08d TL |
256 | /* ip-addr-or-hostname :== ip-address | hostname |
257 | ip-address :== NUMBER DOT NUMBER DOT NUMBER DOT NUMBER | |
258 | ||
259 | Parse an ip address or a hostname. If uniform is zero, put in | |
260 | an expr_substring node to limit hostnames that evaluate to more | |
66eaae18 SK |
261 | than one IP address. |
262 | ||
263 | Note that RFC1123 permits hostnames to consist of all digits, | |
264 | making it difficult to quickly disambiguate them from ip addresses. | |
265 | */ | |
be6be08d | 266 | |
02a015fb TL |
267 | int parse_ip_addr_or_hostname (expr, cfile, uniform) |
268 | struct expression **expr; | |
4615d498 | 269 | struct parse *cfile; |
be6be08d TL |
270 | int uniform; |
271 | { | |
b1b7b521 | 272 | const char *val; |
02a015fb | 273 | enum dhcp_token token; |
be6be08d | 274 | unsigned char addr [4]; |
b1b7b521 | 275 | unsigned len = sizeof addr; |
be6be08d | 276 | char *name; |
02a015fb | 277 | struct expression *x = (struct expression *)0; |
66eaae18 | 278 | int ipaddr = 0; |
be6be08d | 279 | |
b3519f23 | 280 | token = peek_token (&val, (unsigned *)0, cfile); |
66eaae18 SK |
281 | |
282 | if (token == NUMBER) { | |
283 | /* | |
284 | * a hostname may be numeric, but domain names must | |
285 | * start with a letter, so we can disambiguate by | |
286 | * looking ahead a few tokens. we save the parse | |
287 | * context first, and restore it after we know what | |
288 | * we're dealing with. | |
289 | */ | |
bda33169 | 290 | save_parse_state(cfile); |
dc9d7b08 | 291 | skip_token(NULL, NULL, cfile); |
66eaae18 SK |
292 | if (next_token(NULL, NULL, cfile) == DOT && |
293 | next_token(NULL, NULL, cfile) == NUMBER) | |
294 | ipaddr = 1; | |
bda33169 | 295 | restore_parse_state(cfile); |
66eaae18 SK |
296 | |
297 | if (ipaddr && | |
298 | parse_numeric_aggregate (cfile, addr, &len, DOT, 10, 8)) | |
299 | return make_const_data (expr, addr, len, 0, 1, MDL); | |
300 | ||
301 | } | |
302 | ||
303 | if (is_identifier (token) || token == NUMBER) { | |
be6be08d TL |
304 | name = parse_host_name (cfile); |
305 | if (!name) | |
02a015fb | 306 | return 0; |
98311e4b DH |
307 | if (!make_host_lookup (expr, name)) { |
308 | dfree(name, MDL); | |
02a015fb | 309 | return 0; |
98311e4b DH |
310 | } |
311 | dfree(name, MDL); | |
02a015fb TL |
312 | if (!uniform) { |
313 | if (!make_limit (&x, *expr, 4)) | |
314 | return 0; | |
4bd8800e | 315 | expression_dereference (expr, MDL); |
02a015fb TL |
316 | *expr = x; |
317 | } | |
be6be08d TL |
318 | } else { |
319 | if (token != RBRACE && token != LBRACE) | |
b3519f23 | 320 | token = next_token (&val, (unsigned *)0, cfile); |
4615d498 | 321 | parse_warn (cfile, "%s (%d): expecting IP address or hostname", |
be6be08d TL |
322 | val, token); |
323 | if (token != SEMI) | |
324 | skip_to_semi (cfile); | |
02a015fb | 325 | return 0; |
be6be08d TL |
326 | } |
327 | ||
02a015fb | 328 | return 1; |
be6be08d TL |
329 | } |
330 | ||
331 | /* | |
332 | * ip-address :== NUMBER DOT NUMBER DOT NUMBER DOT NUMBER | |
333 | */ | |
334 | ||
796ef008 | 335 | int parse_ip_addr (cfile, addr) |
4615d498 | 336 | struct parse *cfile; |
796ef008 TL |
337 | struct iaddr *addr; |
338 | { | |
796ef008 TL |
339 | addr -> len = 4; |
340 | if (parse_numeric_aggregate (cfile, addr -> iabuf, | |
341 | &addr -> len, DOT, 10, 8)) | |
342 | return 1; | |
343 | return 0; | |
344 | } | |
345 | ||
98bd7ca0 | 346 | /* |
20ae1aff | 347 | * Return true if every character in the string is hexadecimal. |
98bd7ca0 DH |
348 | */ |
349 | static int | |
350 | is_hex_string(const char *s) { | |
351 | while (*s != '\0') { | |
5eab8594 | 352 | if (!isxdigit((int)*s)) { |
98bd7ca0 DH |
353 | return 0; |
354 | } | |
355 | s++; | |
356 | } | |
357 | return 1; | |
358 | } | |
359 | ||
360 | /* | |
361 | * ip-address6 :== (complicated set of rules) | |
362 | * | |
363 | * See section 2.2 of RFC 1884 for details. | |
364 | * | |
365 | * We are lazy for this. We pull numbers, names, colons, and dots | |
366 | * together and then throw the resulting string at the inet_pton() | |
367 | * function. | |
368 | */ | |
369 | ||
370 | int | |
371 | parse_ip6_addr(struct parse *cfile, struct iaddr *addr) { | |
372 | enum dhcp_token token; | |
373 | const char *val; | |
374 | int val_len; | |
375 | ||
376 | char v6[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")]; | |
377 | int v6_len; | |
378 | ||
bda33169 SK |
379 | /* |
380 | * First token is non-raw. This way we eat any whitespace before | |
381 | * our IPv6 address begins, like one would expect. | |
382 | */ | |
383 | token = peek_token(&val, NULL, cfile); | |
384 | ||
385 | /* | |
386 | * Gather symbols. | |
387 | */ | |
98bd7ca0 DH |
388 | v6_len = 0; |
389 | for (;;) { | |
4136513e | 390 | if ((((token == NAME) || (token == NUMBER_OR_NAME)) && |
98bd7ca0 | 391 | is_hex_string(val)) || |
4136513e SR |
392 | (token == NUMBER) || |
393 | (token == TOKEN_ADD) || | |
394 | (token == DOT) || | |
98bd7ca0 DH |
395 | (token == COLON)) { |
396 | ||
bda33169 | 397 | next_raw_token(&val, NULL, cfile); |
98bd7ca0 DH |
398 | val_len = strlen(val); |
399 | if ((v6_len + val_len) >= sizeof(v6)) { | |
400 | parse_warn(cfile, "Invalid IPv6 address."); | |
401 | skip_to_semi(cfile); | |
402 | return 0; | |
403 | } | |
404 | memcpy(v6+v6_len, val, val_len); | |
405 | v6_len += val_len; | |
406 | ||
407 | } else { | |
408 | break; | |
409 | } | |
bda33169 | 410 | token = peek_raw_token(&val, NULL, cfile); |
98bd7ca0 DH |
411 | } |
412 | v6[v6_len] = '\0'; | |
413 | ||
bda33169 SK |
414 | /* |
415 | * Use inet_pton() for actual work. | |
416 | */ | |
98bd7ca0 DH |
417 | if (inet_pton(AF_INET6, v6, addr->iabuf) <= 0) { |
418 | parse_warn(cfile, "Invalid IPv6 address."); | |
419 | skip_to_semi(cfile); | |
420 | return 0; | |
421 | } | |
422 | addr->len = 16; | |
423 | return 1; | |
424 | } | |
425 | ||
426 | /* | |
427 | * Same as parse_ip6_addr() above, but returns the value in the | |
428 | * expression rather than in an address structure. | |
429 | */ | |
430 | int | |
431 | parse_ip6_addr_expr(struct expression **expr, | |
432 | struct parse *cfile) { | |
433 | struct iaddr addr; | |
434 | ||
435 | if (!parse_ip6_addr(cfile, &addr)) { | |
436 | return 0; | |
437 | } | |
438 | return make_const_data(expr, addr.iabuf, addr.len, 0, 1, MDL); | |
439 | } | |
440 | ||
1d9774ab FD |
441 | /* |
442 | * ip6-prefix :== ip6-address "/" NUMBER | |
443 | */ | |
444 | int | |
445 | parse_ip6_prefix(struct parse *cfile, struct iaddr *addr, u_int8_t *plen) { | |
446 | enum dhcp_token token; | |
447 | const char *val; | |
448 | int n; | |
449 | ||
450 | if (!parse_ip6_addr(cfile, addr)) { | |
451 | return 0; | |
452 | } | |
453 | token = next_token(&val, NULL, cfile); | |
454 | if (token != SLASH) { | |
455 | parse_warn(cfile, "Slash expected."); | |
456 | if (token != SEMI) | |
457 | skip_to_semi(cfile); | |
458 | return 0; | |
459 | } | |
460 | token = next_token(&val, NULL, cfile); | |
461 | if (token != NUMBER) { | |
462 | parse_warn(cfile, "Number expected."); | |
463 | if (token != SEMI) | |
464 | skip_to_semi(cfile); | |
465 | return 0; | |
466 | } | |
467 | n = atoi(val); | |
468 | if ((n < 0) || (n > 128)) { | |
469 | parse_warn(cfile, "Invalid IPv6 prefix length."); | |
470 | skip_to_semi(cfile); | |
471 | return 0; | |
472 | } | |
473 | if (!is_cidr_mask_valid(addr, n)) { | |
474 | parse_warn(cfile, "network mask too short."); | |
475 | skip_to_semi(cfile); | |
476 | return 0; | |
477 | } | |
478 | *plen = n; | |
479 | return 1; | |
480 | } | |
481 | ||
febbd402 DH |
482 | /* |
483 | * ip-address-with-subnet :== ip-address | | |
484 | * ip-address "/" NUMBER | |
485 | */ | |
486 | ||
487 | int | |
488 | parse_ip_addr_with_subnet(cfile, match) | |
489 | struct parse *cfile; | |
490 | struct iaddrmatch *match; | |
491 | { | |
492 | const char *val, *orig; | |
493 | enum dhcp_token token; | |
494 | int prefixlen; | |
495 | int fflen; | |
496 | unsigned char newval, warnmask=0; | |
497 | ||
498 | if (parse_ip_addr(cfile, &match->addr)) { | |
499 | /* default to host mask */ | |
500 | prefixlen = match->addr.len * 8; | |
501 | ||
502 | token = peek_token(&val, NULL, cfile); | |
503 | ||
504 | if (token == SLASH) { | |
dc9d7b08 | 505 | skip_token(&val, NULL, cfile); |
febbd402 DH |
506 | token = next_token(&val, NULL, cfile); |
507 | ||
508 | if (token != NUMBER) { | |
509 | parse_warn(cfile, "Invalid CIDR prefix length:" | |
510 | " expecting a number."); | |
511 | return 0; | |
512 | } | |
513 | ||
514 | prefixlen = atoi(val); | |
515 | ||
516 | if (prefixlen < 0 || | |
517 | prefixlen > (match->addr.len * 8)) { | |
518 | parse_warn(cfile, "subnet prefix is out of " | |
519 | "range [0..%d].", | |
520 | match->addr.len * 8); | |
521 | return 0; | |
522 | } | |
523 | } | |
524 | ||
525 | /* construct a suitable mask field */ | |
526 | ||
527 | /* copy length */ | |
528 | match->mask.len = match->addr.len; | |
529 | ||
530 | /* count of 0xff bytes in mask */ | |
531 | fflen = prefixlen / 8; | |
532 | ||
533 | /* set leading mask */ | |
534 | memset(match->mask.iabuf, 0xff, fflen); | |
535 | ||
536 | /* set zeroes */ | |
537 | if (fflen < match->mask.len) { | |
538 | match->mask.iabuf[fflen] = | |
539 | "\x00\x80\xc0\xe0\xf0\xf8\xfc\xfe"[prefixlen % 8]; | |
540 | ||
541 | memset(match->mask.iabuf+fflen+1, 0x00, | |
542 | match->mask.len - fflen - 1); | |
543 | ||
544 | /* AND-out insignificant bits from supplied netmask. */ | |
545 | orig = piaddr(match->addr); | |
546 | do { | |
547 | newval = match->addr.iabuf[fflen] & | |
548 | match->mask.iabuf[fflen]; | |
549 | ||
550 | if (newval != match->addr.iabuf[fflen]) { | |
551 | warnmask = 1; | |
552 | match->addr.iabuf[fflen] = newval; | |
553 | } | |
554 | } while (++fflen < match->mask.len); | |
555 | ||
556 | if (warnmask) { | |
557 | log_error("Warning: Extraneous bits removed " | |
558 | "in address component of %s/%d.", | |
559 | orig, prefixlen); | |
560 | log_error("New value: %s/%d.", | |
561 | piaddr(match->addr), prefixlen); | |
562 | } | |
563 | } | |
564 | ||
565 | return 1; | |
566 | } | |
567 | ||
568 | parse_warn(cfile, | |
569 | "expecting ip-address or ip-address/prefixlen"); | |
570 | ||
571 | return 0; /* let caller pick up pieces */ | |
572 | } | |
573 | ||
be6be08d | 574 | /* |
c57db45c | 575 | * hardware-parameter :== HARDWARE hardware-type colon-separated-hex-list SEMI |
b047bd38 SR |
576 | * hardware-type :== ETHERNET | TOKEN_RING | TOKEN_FDDI | INFINIBAND |
577 | * Note that INFINIBAND may not be useful for some items, such as classification | |
578 | * as the hardware address won't always be available. | |
be6be08d | 579 | */ |
63115431 TL |
580 | |
581 | void parse_hardware_param (cfile, hardware) | |
4615d498 | 582 | struct parse *cfile; |
63115431 TL |
583 | struct hardware *hardware; |
584 | { | |
b1b7b521 | 585 | const char *val; |
02a015fb | 586 | enum dhcp_token token; |
e703795d | 587 | unsigned hlen; |
63115431 TL |
588 | unsigned char *t; |
589 | ||
b047bd38 | 590 | token = next_token(&val, NULL, cfile); |
63115431 TL |
591 | switch (token) { |
592 | case ETHERNET: | |
b047bd38 | 593 | hardware->hbuf[0] = HTYPE_ETHER; |
63115431 TL |
594 | break; |
595 | case TOKEN_RING: | |
b047bd38 | 596 | hardware->hbuf[0] = HTYPE_IEEE802; |
63115431 | 597 | break; |
219a65eb | 598 | case TOKEN_FDDI: |
b047bd38 SR |
599 | hardware->hbuf[0] = HTYPE_FDDI; |
600 | break; | |
601 | case TOKEN_INFINIBAND: | |
602 | hardware->hbuf[0] = HTYPE_INFINIBAND; | |
cea8b5c9 | 603 | break; |
63115431 | 604 | default: |
b047bd38 SR |
605 | if (!strncmp(val, "unknown-", 8)) { |
606 | hardware->hbuf[0] = atoi(&val[8]); | |
7d452841 | 607 | } else { |
b047bd38 SR |
608 | parse_warn(cfile, |
609 | "expecting a network hardware type"); | |
610 | skip_to_semi(cfile); | |
7d452841 TL |
611 | |
612 | return; | |
613 | } | |
63115431 TL |
614 | } |
615 | ||
616 | /* Parse the hardware address information. Technically, | |
617 | it would make a lot of sense to restrict the length of the | |
618 | data we'll accept here to the length of a particular hardware | |
619 | address type. Unfortunately, there are some broken clients | |
620 | out there that put bogus data in the chaddr buffer, and we accept | |
621 | that data in the lease file rather than simply failing on such | |
622 | clients. Yuck. */ | |
623 | hlen = 0; | |
b047bd38 | 624 | token = peek_token(&val, NULL, cfile); |
1898dcf7 | 625 | if (token == SEMI) { |
b047bd38 | 626 | hardware->hlen = 1; |
1898dcf7 TL |
627 | goto out; |
628 | } | |
b047bd38 SR |
629 | t = parse_numeric_aggregate(cfile, NULL, &hlen, COLON, 16, 8); |
630 | if (t == NULL) { | |
631 | hardware->hlen = 1; | |
63115431 | 632 | return; |
1898dcf7 | 633 | } |
b047bd38 SR |
634 | if (hlen + 1 > sizeof(hardware->hbuf)) { |
635 | dfree(t, MDL); | |
636 | parse_warn(cfile, "hardware address too long"); | |
63115431 | 637 | } else { |
b047bd38 SR |
638 | hardware->hlen = hlen + 1; |
639 | memcpy((unsigned char *)&hardware->hbuf[1], t, hlen); | |
640 | if (hlen + 1 < sizeof(hardware->hbuf)) | |
641 | memset(&hardware->hbuf[hlen + 1], 0, | |
642 | (sizeof(hardware->hbuf)) - hlen - 1); | |
643 | dfree(t, MDL); | |
63115431 TL |
644 | } |
645 | ||
1898dcf7 | 646 | out: |
b047bd38 | 647 | token = next_token(&val, NULL, cfile); |
63115431 | 648 | if (token != SEMI) { |
b047bd38 SR |
649 | parse_warn(cfile, "expecting semicolon."); |
650 | skip_to_semi(cfile); | |
63115431 TL |
651 | } |
652 | } | |
653 | ||
654 | /* lease-time :== NUMBER SEMI */ | |
655 | ||
656 | void parse_lease_time (cfile, timep) | |
4615d498 | 657 | struct parse *cfile; |
63115431 TL |
658 | TIME *timep; |
659 | { | |
b1b7b521 | 660 | const char *val; |
02a015fb | 661 | enum dhcp_token token; |
88cd8aca | 662 | u_int32_t num; |
63115431 | 663 | |
b3519f23 | 664 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 665 | if (token != NUMBER) { |
4615d498 | 666 | parse_warn (cfile, "Expecting numeric lease time"); |
63115431 TL |
667 | skip_to_semi (cfile); |
668 | return; | |
669 | } | |
88cd8aca | 670 | convert_num(cfile, (unsigned char *)&num, val, 10, 32); |
63115431 | 671 | /* Unswap the number - convert_num returns stuff in NBO. */ |
88cd8aca | 672 | *timep = ntohl(num); |
63115431 TL |
673 | |
674 | parse_semi (cfile); | |
675 | } | |
676 | ||
677 | /* No BNF for numeric aggregates - that's defined by the caller. What | |
c57db45c SK |
678 | this function does is to parse a sequence of numbers separated by |
679 | the token specified in separator. If max is zero, any number of | |
63115431 TL |
680 | numbers will be parsed; otherwise, exactly max numbers are |
681 | expected. Base and size tell us how to internalize the numbers | |
0f750c4f SR |
682 | once they've been tokenized. |
683 | ||
684 | buf - A pointer to space to return the parsed value, if it is null | |
685 | then the function will allocate space for the return. | |
686 | ||
687 | max - The maximum number of items to store. If zero there is no | |
688 | maximum. When buf is null and the function needs to allocate space | |
689 | it will do an allocation of max size at the beginning if max is non | |
690 | zero. If max is zero then the allocation will be done later, after | |
691 | the function has determined the size necessary for the incoming | |
692 | string. | |
693 | ||
694 | returns NULL on errors or a pointer to the value string on success. | |
695 | The pointer will either be buf if it was non-NULL or newly allocated | |
696 | space if buf was NULL | |
697 | */ | |
698 | ||
63115431 TL |
699 | |
700 | unsigned char *parse_numeric_aggregate (cfile, buf, | |
c57db45c | 701 | max, separator, base, size) |
4615d498 | 702 | struct parse *cfile; |
63115431 | 703 | unsigned char *buf; |
b1b7b521 | 704 | unsigned *max; |
c57db45c | 705 | int separator; |
63115431 | 706 | int base; |
b1b7b521 | 707 | unsigned size; |
63115431 | 708 | { |
b1b7b521 | 709 | const char *val; |
02a015fb | 710 | enum dhcp_token token; |
63115431 | 711 | unsigned char *bufp = buf, *s, *t; |
b1b7b521 | 712 | unsigned count = 0; |
63115431 TL |
713 | pair c = (pair)0; |
714 | ||
715 | if (!bufp && *max) { | |
fdac15d9 | 716 | bufp = (unsigned char *)dmalloc (*max * size / 8, MDL); |
63115431 | 717 | if (!bufp) |
1ff8f8ea | 718 | log_fatal ("no space for numeric aggregate"); |
0f750c4f SR |
719 | } |
720 | s = bufp; | |
63115431 TL |
721 | |
722 | do { | |
723 | if (count) { | |
b3519f23 | 724 | token = peek_token (&val, (unsigned *)0, cfile); |
c57db45c | 725 | if (token != separator) { |
63115431 TL |
726 | if (!*max) |
727 | break; | |
728 | if (token != RBRACE && token != LBRACE) | |
b3519f23 TL |
729 | token = next_token (&val, |
730 | (unsigned *)0, | |
731 | cfile); | |
4615d498 | 732 | parse_warn (cfile, "too few numbers."); |
63115431 TL |
733 | if (token != SEMI) |
734 | skip_to_semi (cfile); | |
0f750c4f SR |
735 | /* free bufp if it was allocated */ |
736 | if ((bufp != NULL) && (bufp != buf)) | |
737 | dfree(bufp, MDL); | |
63115431 TL |
738 | return (unsigned char *)0; |
739 | } | |
dc9d7b08 | 740 | skip_token(&val, (unsigned *)0, cfile); |
63115431 | 741 | } |
b3519f23 | 742 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 743 | |
0b69dcc8 | 744 | if (token == END_OF_FILE) { |
4615d498 | 745 | parse_warn (cfile, "unexpected end of file"); |
63115431 TL |
746 | break; |
747 | } | |
748 | ||
749 | /* Allow NUMBER_OR_NAME if base is 16. */ | |
750 | if (token != NUMBER && | |
751 | (base != 16 || token != NUMBER_OR_NAME)) { | |
4615d498 | 752 | parse_warn (cfile, "expecting numeric value."); |
63115431 | 753 | skip_to_semi (cfile); |
0f750c4f SR |
754 | /* free bufp if it was allocated */ |
755 | if ((bufp != NULL) && (bufp != buf)) | |
756 | dfree(bufp, MDL); | |
757 | /* free any linked numbers we may have allocated */ | |
758 | while (c) { | |
759 | pair cdr = c->cdr; | |
760 | dfree(c->car, MDL); | |
761 | dfree(c, MDL); | |
762 | c = cdr; | |
763 | } | |
764 | return (NULL); | |
63115431 TL |
765 | } |
766 | /* If we can, convert the number now; otherwise, build | |
767 | a linked list of all the numbers. */ | |
768 | if (s) { | |
4615d498 | 769 | convert_num (cfile, s, val, base, size); |
63115431 TL |
770 | s += size / 8; |
771 | } else { | |
fdac15d9 | 772 | t = (unsigned char *)dmalloc (strlen (val) + 1, MDL); |
63115431 | 773 | if (!t) |
8ae2d595 | 774 | log_fatal ("no temp space for number."); |
338303a4 TL |
775 | strcpy ((char *)t, val); |
776 | c = cons ((caddr_t)t, c); | |
63115431 TL |
777 | } |
778 | } while (++count != *max); | |
779 | ||
780 | /* If we had to cons up a list, convert it now. */ | |
781 | if (c) { | |
0f750c4f SR |
782 | /* |
783 | * No need to cleanup bufp, to get here we didn't allocate | |
784 | * bufp above | |
785 | */ | |
fdac15d9 | 786 | bufp = (unsigned char *)dmalloc (count * size / 8, MDL); |
63115431 | 787 | if (!bufp) |
1ff8f8ea | 788 | log_fatal ("no space for numeric aggregate."); |
63115431 TL |
789 | s = bufp + count - size / 8; |
790 | *max = count; | |
791 | } | |
792 | while (c) { | |
793 | pair cdr = c -> cdr; | |
4615d498 | 794 | convert_num (cfile, s, (char *)(c -> car), base, size); |
63115431 TL |
795 | s -= size / 8; |
796 | /* Free up temp space. */ | |
fdac15d9 TL |
797 | dfree (c -> car, MDL); |
798 | dfree (c, MDL); | |
63115431 TL |
799 | c = cdr; |
800 | } | |
801 | return bufp; | |
802 | } | |
803 | ||
4615d498 TL |
804 | void convert_num (cfile, buf, str, base, size) |
805 | struct parse *cfile; | |
63115431 | 806 | unsigned char *buf; |
b1b7b521 | 807 | const char *str; |
63115431 | 808 | int base; |
b1b7b521 | 809 | unsigned size; |
63115431 | 810 | { |
28868515 | 811 | const unsigned char *ptr = (const unsigned char *)str; |
63115431 TL |
812 | int negative = 0; |
813 | u_int32_t val = 0; | |
814 | int tval; | |
815 | int max; | |
816 | ||
817 | if (*ptr == '-') { | |
818 | negative = 1; | |
819 | ++ptr; | |
820 | } | |
821 | ||
822 | /* If base wasn't specified, figure it out from the data. */ | |
823 | if (!base) { | |
824 | if (ptr [0] == '0') { | |
825 | if (ptr [1] == 'x') { | |
826 | base = 16; | |
827 | ptr += 2; | |
828 | } else if (isascii (ptr [1]) && isdigit (ptr [1])) { | |
829 | base = 8; | |
830 | ptr += 1; | |
831 | } else { | |
832 | base = 10; | |
833 | } | |
834 | } else { | |
835 | base = 10; | |
836 | } | |
837 | } | |
838 | ||
839 | do { | |
840 | tval = *ptr++; | |
841 | /* XXX assumes ASCII... */ | |
842 | if (tval >= 'a') | |
843 | tval = tval - 'a' + 10; | |
844 | else if (tval >= 'A') | |
845 | tval = tval - 'A' + 10; | |
846 | else if (tval >= '0') | |
847 | tval -= '0'; | |
848 | else { | |
4615d498 | 849 | parse_warn (cfile, "Bogus number: %s.", str); |
63115431 TL |
850 | break; |
851 | } | |
852 | if (tval >= base) { | |
4615d498 TL |
853 | parse_warn (cfile, |
854 | "Bogus number %s: digit %d not in base %d", | |
f420e08c | 855 | str, tval, base); |
63115431 TL |
856 | break; |
857 | } | |
858 | val = val * base + tval; | |
859 | } while (*ptr); | |
860 | ||
861 | if (negative) | |
862 | max = (1 << (size - 1)); | |
863 | else | |
864 | max = (1 << (size - 1)) + ((1 << (size - 1)) - 1); | |
865 | if (val > max) { | |
866 | switch (base) { | |
867 | case 8: | |
4615d498 | 868 | parse_warn (cfile, |
06afba54 | 869 | "%s%lo exceeds max (%d) for precision.", |
b3d594dd TL |
870 | negative ? "-" : "", |
871 | (unsigned long)val, max); | |
63115431 TL |
872 | break; |
873 | case 16: | |
4615d498 | 874 | parse_warn (cfile, |
06afba54 | 875 | "%s%lx exceeds max (%d) for precision.", |
b3d594dd TL |
876 | negative ? "-" : "", |
877 | (unsigned long)val, max); | |
63115431 TL |
878 | break; |
879 | default: | |
4615d498 | 880 | parse_warn (cfile, |
06afba54 | 881 | "%s%lu exceeds max (%d) for precision.", |
b3d594dd TL |
882 | negative ? "-" : "", |
883 | (unsigned long)val, max); | |
63115431 TL |
884 | break; |
885 | } | |
886 | } | |
887 | ||
888 | if (negative) { | |
889 | switch (size) { | |
890 | case 8: | |
891 | *buf = -(unsigned long)val; | |
892 | break; | |
893 | case 16: | |
b1b7b521 | 894 | putShort (buf, -(long)val); |
63115431 TL |
895 | break; |
896 | case 32: | |
b1b7b521 | 897 | putLong (buf, -(long)val); |
63115431 TL |
898 | break; |
899 | default: | |
4615d498 TL |
900 | parse_warn (cfile, |
901 | "Unexpected integer size: %d\n", size); | |
63115431 TL |
902 | break; |
903 | } | |
904 | } else { | |
905 | switch (size) { | |
906 | case 8: | |
907 | *buf = (u_int8_t)val; | |
908 | break; | |
909 | case 16: | |
910 | putUShort (buf, (u_int16_t)val); | |
911 | break; | |
912 | case 32: | |
913 | putULong (buf, val); | |
914 | break; | |
915 | default: | |
4615d498 TL |
916 | parse_warn (cfile, |
917 | "Unexpected integer size: %d\n", size); | |
63115431 TL |
918 | break; |
919 | } | |
920 | } | |
921 | } | |
922 | ||
be6be08d TL |
923 | /* |
924 | * date :== NUMBER NUMBER SLASH NUMBER SLASH NUMBER | |
83d409ae | 925 | * NUMBER COLON NUMBER COLON NUMBER | |
a82abfc7 | 926 | * NUMBER NUMBER SLASH NUMBER SLASH NUMBER |
83d409ae SR |
927 | * NUMBER COLON NUMBER COLON NUMBER NUMBER | |
928 | * EPOCH NUMBER | | |
be1ee858 | 929 | * NEVER |
be6be08d | 930 | * |
b1d3778c | 931 | * Dates are stored in UTC or with a timezone offset; first number is day |
a82abfc7 TL |
932 | * of week; next is year/month/day; next is hours:minutes:seconds on a |
933 | * 24-hour clock, followed by the timezone offset in seconds, which is | |
934 | * optional. | |
be6be08d | 935 | */ |
63115431 | 936 | |
83d409ae SR |
937 | /* |
938 | * just parse the date | |
939 | * any trailing semi must be consumed by the caller of this routine | |
940 | */ | |
b1d3778c DH |
941 | TIME |
942 | parse_date_core(cfile) | |
4615d498 | 943 | struct parse *cfile; |
63115431 | 944 | { |
63115431 | 945 | int guess; |
dd9237c3 | 946 | int tzoff, year, mon, mday, hour, min, sec; |
b1b7b521 | 947 | const char *val; |
02a015fb | 948 | enum dhcp_token token; |
83d409ae SR |
949 | static int months[11] = { 31, 59, 90, 120, 151, 181, |
950 | 212, 243, 273, 304, 334 }; | |
63115431 | 951 | |
83d409ae SR |
952 | /* "never", "epoch" or day of week */ |
953 | token = peek_token(&val, NULL, cfile); | |
be1ee858 | 954 | if (token == NEVER) { |
dc9d7b08 | 955 | skip_token(&val, NULL, cfile); /* consume NEVER */ |
83d409ae | 956 | return(MAX_TIME); |
be1ee858 TL |
957 | } |
958 | ||
5e864416 DH |
959 | /* This indicates 'local' time format. */ |
960 | if (token == EPOCH) { | |
dc9d7b08 | 961 | skip_token(&val, NULL, cfile); /* consume EPOCH */ |
83d409ae | 962 | token = peek_token(&val, NULL, cfile); |
5e864416 DH |
963 | |
964 | if (token != NUMBER) { | |
5e864416 | 965 | if (token != SEMI) |
dc9d7b08 | 966 | skip_token(&val, NULL, cfile); |
83d409ae SR |
967 | parse_warn(cfile, "Seconds since epoch expected."); |
968 | return((TIME)0); | |
5e864416 DH |
969 | } |
970 | ||
dc9d7b08 | 971 | skip_token(&val, NULL, cfile); /* consume number */ |
5e864416 DH |
972 | guess = atoi(val); |
973 | ||
83d409ae | 974 | return((TIME)guess); |
5e864416 DH |
975 | } |
976 | ||
63115431 | 977 | if (token != NUMBER) { |
63115431 | 978 | if (token != SEMI) |
dc9d7b08 | 979 | skip_token(&val, NULL, cfile); |
83d409ae SR |
980 | parse_warn(cfile, "numeric day of week expected."); |
981 | return((TIME)0); | |
63115431 | 982 | } |
dc9d7b08 | 983 | skip_token(&val, NULL, cfile); /* consume day of week */ |
dd9237c3 | 984 | /* we are not using this for anything */ |
63115431 TL |
985 | |
986 | /* Year... */ | |
83d409ae | 987 | token = peek_token(&val, NULL, cfile); |
63115431 | 988 | if (token != NUMBER) { |
63115431 | 989 | if (token != SEMI) |
dc9d7b08 | 990 | skip_token(&val, NULL, cfile); |
83d409ae SR |
991 | parse_warn(cfile, "numeric year expected."); |
992 | return((TIME)0); | |
63115431 | 993 | } |
dc9d7b08 | 994 | skip_token(&val, NULL, cfile); /* consume year */ |
edca2b1a TL |
995 | |
996 | /* Note: the following is not a Y2K bug - it's a Y1.9K bug. Until | |
997 | somebody invents a time machine, I think we can safely disregard | |
998 | it. This actually works around a stupid Y2K bug that was present | |
999 | in a very early beta release of dhcpd. */ | |
83d409ae | 1000 | year = atoi(val); |
a82abfc7 TL |
1001 | if (year > 1900) |
1002 | year -= 1900; | |
63115431 | 1003 | |
c57db45c | 1004 | /* Slash separating year from month... */ |
83d409ae | 1005 | token = peek_token(&val, NULL, cfile); |
63115431 | 1006 | if (token != SLASH) { |
63115431 | 1007 | if (token != SEMI) |
dc9d7b08 | 1008 | skip_token(&val, NULL, cfile); |
83d409ae SR |
1009 | parse_warn(cfile, |
1010 | "expected slash separating year from month."); | |
1011 | return((TIME)0); | |
63115431 | 1012 | } |
dc9d7b08 | 1013 | skip_token(&val, NULL, cfile); /* consume SLASH */ |
63115431 TL |
1014 | |
1015 | /* Month... */ | |
83d409ae | 1016 | token = peek_token(&val, NULL, cfile); |
63115431 | 1017 | if (token != NUMBER) { |
63115431 | 1018 | if (token != SEMI) |
dc9d7b08 | 1019 | skip_token(&val, NULL, cfile); |
83d409ae SR |
1020 | parse_warn(cfile, "numeric month expected."); |
1021 | return((TIME)0); | |
63115431 | 1022 | } |
dc9d7b08 | 1023 | skip_token(&val, NULL, cfile); /* consume month */ |
83d409ae | 1024 | mon = atoi(val) - 1; |
63115431 | 1025 | |
c57db45c | 1026 | /* Slash separating month from day... */ |
83d409ae | 1027 | token = peek_token(&val, NULL, cfile); |
63115431 | 1028 | if (token != SLASH) { |
63115431 | 1029 | if (token != SEMI) |
dc9d7b08 | 1030 | skip_token(&val, NULL, cfile); |
83d409ae SR |
1031 | parse_warn(cfile, |
1032 | "expected slash separating month from day."); | |
1033 | return((TIME)0); | |
63115431 | 1034 | } |
dc9d7b08 | 1035 | skip_token(&val, NULL, cfile); /* consume SLASH */ |
63115431 | 1036 | |
98311e4b | 1037 | /* Day of month... */ |
83d409ae | 1038 | token = peek_token(&val, NULL, cfile); |
63115431 | 1039 | if (token != NUMBER) { |
63115431 | 1040 | if (token != SEMI) |
dc9d7b08 | 1041 | skip_token(&val, NULL, cfile); |
83d409ae SR |
1042 | parse_warn(cfile, "numeric day of month expected."); |
1043 | return((TIME)0); | |
63115431 | 1044 | } |
dc9d7b08 | 1045 | skip_token(&val, NULL, cfile); /* consume day of month */ |
83d409ae | 1046 | mday = atoi(val); |
63115431 TL |
1047 | |
1048 | /* Hour... */ | |
83d409ae | 1049 | token = peek_token(&val, NULL, cfile); |
63115431 | 1050 | if (token != NUMBER) { |
63115431 | 1051 | if (token != SEMI) |
dc9d7b08 | 1052 | skip_token(&val, NULL, cfile); |
83d409ae SR |
1053 | parse_warn(cfile, "numeric hour expected."); |
1054 | return((TIME)0); | |
63115431 | 1055 | } |
dc9d7b08 | 1056 | skip_token(&val, NULL, cfile); /* consume hour */ |
83d409ae | 1057 | hour = atoi(val); |
63115431 | 1058 | |
c57db45c | 1059 | /* Colon separating hour from minute... */ |
83d409ae | 1060 | token = peek_token(&val, NULL, cfile); |
63115431 | 1061 | if (token != COLON) { |
63115431 | 1062 | if (token != SEMI) |
dc9d7b08 | 1063 | skip_token(&val, NULL, cfile); |
83d409ae SR |
1064 | parse_warn(cfile, |
1065 | "expected colon separating hour from minute."); | |
1066 | return((TIME)0); | |
63115431 | 1067 | } |
dc9d7b08 | 1068 | skip_token(&val, NULL, cfile); /* consume colon */ |
63115431 TL |
1069 | |
1070 | /* Minute... */ | |
83d409ae | 1071 | token = peek_token(&val, NULL, cfile); |
63115431 | 1072 | if (token != NUMBER) { |
63115431 | 1073 | if (token != SEMI) |
dc9d7b08 | 1074 | skip_token(&val, NULL, cfile); |
83d409ae SR |
1075 | parse_warn(cfile, "numeric minute expected."); |
1076 | return((TIME)0); | |
63115431 | 1077 | } |
dc9d7b08 | 1078 | skip_token(&val, NULL, cfile); /* consume minute */ |
83d409ae | 1079 | min = atoi(val); |
63115431 | 1080 | |
c57db45c | 1081 | /* Colon separating minute from second... */ |
83d409ae | 1082 | token = peek_token(&val, NULL, cfile); |
63115431 | 1083 | if (token != COLON) { |
63115431 | 1084 | if (token != SEMI) |
dc9d7b08 | 1085 | skip_token(&val, NULL, cfile); |
83d409ae SR |
1086 | parse_warn(cfile, |
1087 | "expected colon separating minute from second."); | |
1088 | return((TIME)0); | |
63115431 | 1089 | } |
dc9d7b08 | 1090 | skip_token(&val, NULL, cfile); /* consume colon */ |
63115431 | 1091 | |
67674ffb | 1092 | /* Second... */ |
83d409ae | 1093 | token = peek_token(&val, NULL, cfile); |
63115431 | 1094 | if (token != NUMBER) { |
63115431 | 1095 | if (token != SEMI) |
dc9d7b08 | 1096 | skip_token(&val, NULL, cfile); |
83d409ae SR |
1097 | parse_warn(cfile, "numeric second expected."); |
1098 | return((TIME)0); | |
63115431 | 1099 | } |
dc9d7b08 | 1100 | skip_token(&val, NULL, cfile); /* consume second */ |
83d409ae | 1101 | sec = atoi(val); |
63115431 | 1102 | |
83d409ae SR |
1103 | tzoff = 0; |
1104 | token = peek_token(&val, NULL, cfile); | |
a82abfc7 | 1105 | if (token == NUMBER) { |
dc9d7b08 | 1106 | skip_token(&val, NULL, cfile); /* consume tzoff */ |
83d409ae SR |
1107 | tzoff = atoi(val); |
1108 | } else if (token != SEMI) { | |
dc9d7b08 | 1109 | skip_token(&val, NULL, cfile); |
83d409ae SR |
1110 | parse_warn(cfile, |
1111 | "Time zone offset or semicolon expected."); | |
1112 | return((TIME)0); | |
1113 | } | |
63115431 | 1114 | |
90fdd337 SR |
1115 | /* If the year is 2038 or greater return the max time to avoid |
1116 | * overflow issues. We could try and be more precise but there | |
1117 | * doesn't seem to be a good reason to worry about it and waste | |
1118 | * the cpu looking at the rest of the date. */ | |
1119 | if (year >= 138) | |
1120 | return(MAX_TIME); | |
1121 | ||
63115431 | 1122 | /* Guess the time value... */ |
a82abfc7 TL |
1123 | guess = ((((((365 * (year - 70) + /* Days in years since '70 */ |
1124 | (year - 69) / 4 + /* Leap days since '70 */ | |
1125 | (mon /* Days in months this year */ | |
1126 | ? months [mon - 1] | |
63115431 | 1127 | : 0) + |
a82abfc7 TL |
1128 | (mon > 1 && /* Leap day this year */ |
1129 | !((year - 72) & 3)) + | |
1130 | mday - 1) * 24) + /* Day of month */ | |
1131 | hour) * 60) + | |
1132 | min) * 60) + sec + tzoff; | |
63115431 TL |
1133 | |
1134 | /* This guess could be wrong because of leap seconds or other | |
1135 | weirdness we don't know about that the system does. For | |
1136 | now, we're just going to accept the guess, but at some point | |
1137 | it might be nice to do a successive approximation here to | |
1138 | get an exact value. Even if the error is small, if the | |
1139 | server is restarted frequently (and thus the lease database | |
1140 | is reread), the error could accumulate into something | |
1141 | significant. */ | |
1142 | ||
83d409ae | 1143 | return((TIME)guess); |
63115431 | 1144 | } |
4761e04b | 1145 | |
83d409ae SR |
1146 | /* |
1147 | * Wrapper to consume the semicolon after the date | |
1148 | * :== date semi | |
1149 | */ | |
1150 | ||
b1d3778c DH |
1151 | TIME |
1152 | parse_date(cfile) | |
1153 | struct parse *cfile; | |
1154 | { | |
83d409ae | 1155 | TIME guess; |
b1d3778c DH |
1156 | guess = parse_date_core(cfile); |
1157 | ||
1158 | /* Make sure the date ends in a semicolon... */ | |
1159 | if (!parse_semi(cfile)) | |
83d409ae SR |
1160 | return((TIME)0); |
1161 | return(guess); | |
b1d3778c DH |
1162 | } |
1163 | ||
1164 | ||
1165 | ||
be6be08d TL |
1166 | /* |
1167 | * option-name :== IDENTIFIER | | |
1168 | IDENTIFIER . IDENTIFIER | |
1169 | */ | |
1170 | ||
f7fdb216 DH |
1171 | isc_result_t |
1172 | parse_option_name (cfile, allocate, known, opt) | |
4615d498 | 1173 | struct parse *cfile; |
6b4b0ec7 | 1174 | int allocate; |
b1b7b521 | 1175 | int *known; |
f7fdb216 | 1176 | struct option **opt; |
4761e04b | 1177 | { |
b1b7b521 | 1178 | const char *val; |
02a015fb | 1179 | enum dhcp_token token; |
6b4b0ec7 | 1180 | char *uname; |
4761e04b TL |
1181 | struct universe *universe; |
1182 | struct option *option; | |
d5341d9b | 1183 | unsigned code; |
4761e04b | 1184 | |
f7fdb216 | 1185 | if (opt == NULL) |
98bf1607 | 1186 | return DHCP_R_INVALIDARG; |
f7fdb216 | 1187 | |
b3519f23 | 1188 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b | 1189 | if (!is_identifier (token)) { |
4615d498 TL |
1190 | parse_warn (cfile, |
1191 | "expecting identifier after option keyword."); | |
4761e04b TL |
1192 | if (token != SEMI) |
1193 | skip_to_semi (cfile); | |
98bf1607 | 1194 | return DHCP_R_BADPARSE; |
4761e04b | 1195 | } |
fdac15d9 | 1196 | uname = dmalloc (strlen (val) + 1, MDL); |
6b4b0ec7 TL |
1197 | if (!uname) |
1198 | log_fatal ("no memory for uname information."); | |
1199 | strcpy (uname, val); | |
b3519f23 | 1200 | token = peek_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
1201 | if (token == DOT) { |
1202 | /* Go ahead and take the DOT token... */ | |
dc9d7b08 | 1203 | skip_token(&val, (unsigned *)0, cfile); |
4761e04b TL |
1204 | |
1205 | /* The next token should be an identifier... */ | |
b3519f23 | 1206 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b | 1207 | if (!is_identifier (token)) { |
4615d498 | 1208 | parse_warn (cfile, "expecting identifier after '.'"); |
4761e04b TL |
1209 | if (token != SEMI) |
1210 | skip_to_semi (cfile); | |
98bf1607 | 1211 | return DHCP_R_BADPARSE; |
4761e04b TL |
1212 | } |
1213 | ||
1214 | /* Look up the option name hash table for the specified | |
6b4b0ec7 | 1215 | uname. */ |
20916cae TL |
1216 | universe = (struct universe *)0; |
1217 | if (!universe_hash_lookup (&universe, universe_hash, | |
1218 | uname, 0, MDL)) { | |
4615d498 | 1219 | parse_warn (cfile, "no option space named %s.", uname); |
4761e04b | 1220 | skip_to_semi (cfile); |
f7fdb216 | 1221 | return ISC_R_NOTFOUND; |
4761e04b TL |
1222 | } |
1223 | } else { | |
1224 | /* Use the default hash table, which contains all the | |
1225 | standard dhcp option names. */ | |
6b4b0ec7 | 1226 | val = uname; |
4761e04b TL |
1227 | universe = &dhcp_universe; |
1228 | } | |
1229 | ||
1230 | /* Look up the actual option info... */ | |
f7fdb216 DH |
1231 | option_name_hash_lookup(opt, universe->name_hash, val, 0, MDL); |
1232 | option = *opt; | |
4761e04b TL |
1233 | |
1234 | /* If we didn't get an option structure, it's an undefined option. */ | |
b1b7b521 | 1235 | if (option) { |
9a7f6fcd TL |
1236 | if (known) |
1237 | *known = 1; | |
d5341d9b SK |
1238 | /* If the option name is of the form unknown-[decimal], use |
1239 | * the trailing decimal value to find the option definition. | |
1240 | * If there is no definition, construct one. This is to | |
1241 | * support legacy use of unknown options in config files or | |
1242 | * lease databases. | |
1243 | */ | |
1244 | } else if (strncasecmp(val, "unknown-", 8) == 0) { | |
1245 | code = atoi(val+8); | |
f7fdb216 | 1246 | |
d5341d9b SK |
1247 | /* Option code 0 is always illegal for us, thanks |
1248 | * to the option decoder. | |
1249 | */ | |
1250 | if (code == 0 || code == universe->end) { | |
1251 | parse_warn(cfile, "Option codes 0 and %u are illegal " | |
1252 | "in the %s space.", universe->end, | |
1253 | universe->name); | |
1254 | skip_to_semi(cfile); | |
f7fdb216 | 1255 | dfree(uname, MDL); |
d5341d9b | 1256 | return ISC_R_FAILURE; |
6b4b0ec7 | 1257 | } |
d5341d9b SK |
1258 | |
1259 | /* It's odd to think of unknown option codes as | |
1260 | * being known, but this means we know what the | |
1261 | * parsed name is talking about. | |
1262 | */ | |
1263 | if (known) | |
1264 | *known = 1; | |
1265 | ||
1266 | option_code_hash_lookup(opt, universe->code_hash, | |
1267 | &code, 0, MDL); | |
1268 | option = *opt; | |
1269 | ||
1270 | /* If we did not find an option of that code, | |
1271 | * manufacture an unknown-xxx option definition. | |
1272 | * Its single reference will ensure that it is | |
1273 | * deleted once the option is recycled out of | |
1274 | * existence (by the parent). | |
1275 | */ | |
1276 | if (option == NULL) { | |
1277 | option = new_option(val, MDL); | |
1278 | option->universe = universe; | |
1279 | option->code = code; | |
399d3dbe | 1280 | option->format = default_option_format; |
d5341d9b SK |
1281 | option_reference(opt, option, MDL); |
1282 | } else | |
1283 | log_info("option %s has been redefined as option %s. " | |
1284 | "Please update your configs if neccessary.", | |
1285 | val, option->name); | |
1286 | /* If we've been told to allocate, that means that this | |
1287 | * (might) be an option code definition, so we'll create | |
1288 | * an option structure and return it for the parent to | |
1289 | * decide. | |
1290 | */ | |
1291 | } else if (allocate) { | |
1292 | option = new_option(val, MDL); | |
1293 | option -> universe = universe; | |
1294 | option_reference(opt, option, MDL); | |
1295 | } else { | |
1296 | parse_warn(cfile, "no option named %s in space %s", | |
1297 | val, universe->name); | |
4761e04b | 1298 | skip_to_semi (cfile); |
f7fdb216 DH |
1299 | dfree(uname, MDL); |
1300 | return ISC_R_NOTFOUND; | |
4761e04b TL |
1301 | } |
1302 | ||
1303 | /* Free the initial identifier token. */ | |
fdac15d9 | 1304 | dfree (uname, MDL); |
f7fdb216 | 1305 | return ISC_R_SUCCESS; |
4761e04b TL |
1306 | } |
1307 | ||
f7fdb216 DH |
1308 | /* IDENTIFIER [WIDTHS] SEMI |
1309 | * WIDTHS ~= LENGTH WIDTH NUMBER | |
1310 | * CODE WIDTH NUMBER | |
1311 | */ | |
52c9d530 TL |
1312 | |
1313 | void parse_option_space_decl (cfile) | |
4615d498 | 1314 | struct parse *cfile; |
52c9d530 TL |
1315 | { |
1316 | int token; | |
b1b7b521 | 1317 | const char *val; |
52c9d530 | 1318 | struct universe **ua, *nu; |
f7fdb216 DH |
1319 | char *nu_name; |
1320 | int tsize=1, lsize=1, hsize = 0; | |
52c9d530 | 1321 | |
dc9d7b08 | 1322 | skip_token(&val, (unsigned *)0, cfile); /* Discard the SPACE token, |
b3519f23 TL |
1323 | which was checked by the |
1324 | caller. */ | |
1325 | token = next_token (&val, (unsigned *)0, cfile); | |
52c9d530 | 1326 | if (!is_identifier (token)) { |
4615d498 | 1327 | parse_warn (cfile, "expecting identifier."); |
52c9d530 TL |
1328 | skip_to_semi (cfile); |
1329 | return; | |
1330 | } | |
4bd8800e | 1331 | nu = new_universe (MDL); |
52c9d530 TL |
1332 | if (!nu) |
1333 | log_fatal ("No memory for new option space."); | |
1334 | ||
1335 | /* Set up the server option universe... */ | |
f7fdb216 DH |
1336 | nu_name = dmalloc (strlen (val) + 1, MDL); |
1337 | if (!nu_name) | |
52c9d530 | 1338 | log_fatal ("No memory for new option space name."); |
f7fdb216 DH |
1339 | strcpy (nu_name, val); |
1340 | nu -> name = nu_name; | |
1341 | ||
1342 | do { | |
1343 | token = next_token(&val, NULL, cfile); | |
1344 | switch(token) { | |
1345 | case SEMI: | |
1346 | break; | |
1347 | ||
1348 | case CODE: | |
1349 | token = next_token(&val, NULL, cfile); | |
1350 | if (token != WIDTH) { | |
1351 | parse_warn(cfile, "expecting width token."); | |
1352 | goto bad; | |
1353 | } | |
1354 | ||
1355 | token = next_token(&val, NULL, cfile); | |
1356 | if (token != NUMBER) { | |
1357 | parse_warn(cfile, "expecting number 1, 2, 4."); | |
1358 | goto bad; | |
1359 | } | |
1360 | ||
1361 | tsize = atoi(val); | |
1362 | ||
1363 | ||
1364 | switch (tsize) { | |
1365 | case 1: | |
1366 | if (!hsize) | |
1367 | hsize = BYTE_NAME_HASH_SIZE; | |
1368 | break; | |
1369 | case 2: | |
1370 | if (!hsize) | |
1371 | hsize = WORD_NAME_HASH_SIZE; | |
1372 | break; | |
1373 | case 4: | |
1374 | if (!hsize) | |
1375 | hsize = QUAD_NAME_HASH_SIZE; | |
1376 | break; | |
1377 | default: | |
1378 | parse_warn(cfile, "invalid code width (%d), " | |
1379 | "expecting a 1, 2 or 4.", | |
d19e2cf7 | 1380 | tsize); |
f7fdb216 DH |
1381 | goto bad; |
1382 | } | |
1383 | break; | |
1384 | ||
1385 | case LENGTH: | |
1386 | token = next_token(&val, NULL, cfile); | |
1387 | if (token != WIDTH) { | |
1388 | parse_warn(cfile, "expecting width token."); | |
1389 | goto bad; | |
1390 | } | |
1391 | ||
1392 | token = next_token(&val, NULL, cfile); | |
1393 | if (token != NUMBER) { | |
1394 | parse_warn(cfile, "expecting number 1 or 2."); | |
1395 | goto bad; | |
1396 | } | |
1397 | ||
1398 | lsize = atoi(val); | |
1399 | if (lsize != 1 && lsize != 2) { | |
1400 | parse_warn(cfile, "invalid length width (%d) " | |
d19e2cf7 | 1401 | "expecting 1 or 2.", lsize); |
f7fdb216 DH |
1402 | goto bad; |
1403 | } | |
1404 | ||
1405 | break; | |
1406 | ||
1407 | case HASH: | |
1408 | token = next_token(&val, NULL, cfile); | |
1409 | if (token != SIZE) { | |
1410 | parse_warn(cfile, "expecting size token."); | |
1411 | goto bad; | |
1412 | } | |
1413 | ||
1414 | token = next_token(&val, NULL, cfile); | |
1415 | if (token != NUMBER) { | |
1416 | parse_warn(cfile, "expecting a 10base number"); | |
1417 | goto bad; | |
1418 | } | |
1419 | ||
1420 | /* (2^31)-1 is the highest Mersenne prime we should | |
1421 | * probably allow... | |
1422 | */ | |
1423 | hsize = atoi(val); | |
1424 | if (hsize < 0 || hsize > 0x7FFFFFFF) { | |
1425 | parse_warn(cfile, "invalid hash length: %d", | |
1426 | hsize); | |
1427 | goto bad; | |
1428 | } | |
1429 | ||
1430 | break; | |
1431 | ||
1432 | default: | |
1433 | parse_warn(cfile, "Unexpected token."); | |
1434 | } | |
1435 | } while (token != SEMI); | |
1436 | ||
1437 | if (!hsize) | |
1438 | hsize = DEFAULT_SPACE_HASH_SIZE; | |
1439 | ||
52c9d530 | 1440 | nu -> lookup_func = lookup_hashed_option; |
f7fdb216 | 1441 | nu -> option_state_dereference = hashed_option_state_dereference; |
f769d5ac | 1442 | nu -> foreach = hashed_option_space_foreach; |
52c9d530 TL |
1443 | nu -> save_func = save_hashed_option; |
1444 | nu -> delete_func = delete_hashed_option; | |
1445 | nu -> encapsulate = hashed_option_space_encapsulate; | |
962dc4ab | 1446 | nu -> decode = parse_option_buffer; |
f7fdb216 DH |
1447 | nu -> length_size = lsize; |
1448 | nu -> tag_size = tsize; | |
1449 | switch(tsize) { | |
1450 | case 1: | |
1451 | nu->get_tag = getUChar; | |
1452 | nu->store_tag = putUChar; | |
1453 | break; | |
1454 | case 2: | |
1455 | nu->get_tag = getUShort; | |
1456 | nu->store_tag = putUShort; | |
1457 | break; | |
1458 | case 4: | |
1459 | nu->get_tag = getULong; | |
1460 | nu->store_tag = putULong; | |
1461 | break; | |
1462 | default: | |
1463 | log_fatal("Impossible condition at %s:%d.", MDL); | |
1464 | } | |
1465 | switch(lsize) { | |
98bd7ca0 DH |
1466 | case 0: |
1467 | nu->get_length = NULL; | |
1468 | nu->store_length = NULL; | |
1469 | break; | |
f7fdb216 DH |
1470 | case 1: |
1471 | nu->get_length = getUChar; | |
1472 | nu->store_length = putUChar; | |
1473 | break; | |
1474 | case 2: | |
1475 | nu->get_length = getUShort; | |
1476 | nu->store_length = putUShort; | |
1477 | break; | |
1478 | default: | |
1479 | log_fatal("Impossible condition at %s:%d.", MDL); | |
1480 | } | |
52c9d530 TL |
1481 | nu -> index = universe_count++; |
1482 | if (nu -> index >= universe_max) { | |
fdac15d9 | 1483 | ua = dmalloc (universe_max * 2 * sizeof *ua, MDL); |
52c9d530 TL |
1484 | if (!ua) |
1485 | log_fatal ("No memory to expand option space array."); | |
1486 | memcpy (ua, universes, universe_max * sizeof *ua); | |
1487 | universe_max *= 2; | |
fdac15d9 | 1488 | dfree (universes, MDL); |
52c9d530 TL |
1489 | universes = ua; |
1490 | } | |
1491 | universes [nu -> index] = nu; | |
f7fdb216 DH |
1492 | if (!option_name_new_hash(&nu->name_hash, hsize, MDL) || |
1493 | !option_code_new_hash(&nu->code_hash, hsize, MDL)) | |
1494 | log_fatal("Can't allocate %s option hash table.", nu->name); | |
20916cae | 1495 | universe_hash_add (universe_hash, nu -> name, 0, nu, MDL); |
f7fdb216 DH |
1496 | return; |
1497 | ||
1498 | bad: | |
1499 | dfree(nu_name, MDL); | |
1500 | dfree(nu, MDL); | |
52c9d530 TL |
1501 | } |
1502 | ||
6b4b0ec7 TL |
1503 | /* This is faked up to look good right now. Ideally, this should do a |
1504 | recursive parse and allow arbitrary data structure definitions, but for | |
1505 | now it just allows you to specify a single type, an array of single types, | |
1506 | a sequence of types, or an array of sequences of types. | |
1507 | ||
1508 | ocd :== NUMBER EQUALS ocsd SEMI | |
1509 | ||
1510 | ocsd :== ocsd_type | | |
1511 | ocsd_type_sequence | | |
d8fc5060 | 1512 | ARRAY OF ocsd_simple_type_sequence |
6b4b0ec7 TL |
1513 | |
1514 | ocsd_type_sequence :== LBRACE ocsd_types RBRACE | |
1515 | ||
d8fc5060 TL |
1516 | ocsd_simple_type_sequence :== LBRACE ocsd_simple_types RBRACE |
1517 | ||
1518 | ocsd_types :== ocsd_type | | |
1519 | ocsd_types ocsd_type | |
1520 | ||
1521 | ocsd_type :== ocsd_simple_type | | |
1522 | ARRAY OF ocsd_simple_type | |
1523 | ||
1524 | ocsd_simple_types :== ocsd_simple_type | | |
1525 | ocsd_simple_types ocsd_simple_type | |
1526 | ||
1527 | ocsd_simple_type :== BOOLEAN | | |
1528 | INTEGER NUMBER | | |
1529 | SIGNED INTEGER NUMBER | | |
1530 | UNSIGNED INTEGER NUMBER | | |
1531 | IP-ADDRESS | | |
1532 | TEXT | | |
962dc4ab TL |
1533 | STRING | |
1534 | ENCAPSULATE identifier */ | |
6b4b0ec7 TL |
1535 | |
1536 | int parse_option_code_definition (cfile, option) | |
4615d498 | 1537 | struct parse *cfile; |
6b4b0ec7 TL |
1538 | struct option *option; |
1539 | { | |
b1b7b521 | 1540 | const char *val; |
6b4b0ec7 | 1541 | enum dhcp_token token; |
f7fdb216 | 1542 | struct option *oldopt; |
b1b7b521 | 1543 | unsigned arrayp = 0; |
6b4b0ec7 TL |
1544 | int recordp = 0; |
1545 | int no_more_in_record = 0; | |
1546 | char tokbuf [128]; | |
b1b7b521 | 1547 | unsigned tokix = 0; |
6b4b0ec7 | 1548 | char type; |
6b4b0ec7 | 1549 | int is_signed; |
b1b7b521 | 1550 | char *s; |
962dc4ab | 1551 | int has_encapsulation = 0; |
98bd7ca0 | 1552 | struct universe *encapsulated; |
6b4b0ec7 TL |
1553 | |
1554 | /* Parse the option code. */ | |
b3519f23 | 1555 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1556 | if (token != NUMBER) { |
4615d498 | 1557 | parse_warn (cfile, "expecting option code number."); |
6b4b0ec7 TL |
1558 | skip_to_semi (cfile); |
1559 | return 0; | |
1560 | } | |
1561 | option -> code = atoi (val); | |
1562 | ||
b3519f23 | 1563 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1564 | if (token != EQUAL) { |
4615d498 | 1565 | parse_warn (cfile, "expecting \"=\""); |
6b4b0ec7 TL |
1566 | skip_to_semi (cfile); |
1567 | return 0; | |
1568 | } | |
1569 | ||
1570 | /* See if this is an array. */ | |
b3519f23 | 1571 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1572 | if (token == ARRAY) { |
b3519f23 | 1573 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1574 | if (token != OF) { |
4615d498 | 1575 | parse_warn (cfile, "expecting \"of\"."); |
6b4b0ec7 TL |
1576 | skip_to_semi (cfile); |
1577 | return 0; | |
1578 | } | |
1579 | arrayp = 1; | |
b3519f23 | 1580 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 TL |
1581 | } |
1582 | ||
1583 | if (token == LBRACE) { | |
1584 | recordp = 1; | |
b3519f23 | 1585 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 TL |
1586 | } |
1587 | ||
1588 | /* At this point we're expecting a data type. */ | |
1589 | next_type: | |
962dc4ab TL |
1590 | if (has_encapsulation) { |
1591 | parse_warn (cfile, | |
1592 | "encapsulate must always be the last item."); | |
1593 | skip_to_semi (cfile); | |
1594 | return 0; | |
1595 | } | |
1596 | ||
6b4b0ec7 | 1597 | switch (token) { |
d8fc5060 TL |
1598 | case ARRAY: |
1599 | if (arrayp) { | |
1600 | parse_warn (cfile, "no nested arrays."); | |
1601 | skip_to_rbrace (cfile, recordp); | |
1602 | if (recordp) | |
1603 | skip_to_semi (cfile); | |
1604 | return 0; | |
1605 | } | |
b3519f23 | 1606 | token = next_token (&val, (unsigned *)0, cfile); |
d8fc5060 TL |
1607 | if (token != OF) { |
1608 | parse_warn (cfile, "expecting \"of\"."); | |
1609 | skip_to_semi (cfile); | |
1610 | return 0; | |
1611 | } | |
1612 | arrayp = recordp + 1; | |
b3519f23 | 1613 | token = next_token (&val, (unsigned *)0, cfile); |
d8fc5060 TL |
1614 | if ((recordp) && (token == LBRACE)) { |
1615 | parse_warn (cfile, | |
1616 | "only uniform array inside record."); | |
1617 | skip_to_rbrace (cfile, recordp + 1); | |
1618 | skip_to_semi (cfile); | |
1619 | return 0; | |
1620 | } | |
1621 | goto next_type; | |
6b4b0ec7 TL |
1622 | case BOOLEAN: |
1623 | type = 'f'; | |
1624 | break; | |
1625 | case INTEGER: | |
1626 | is_signed = 1; | |
1627 | parse_integer: | |
b3519f23 | 1628 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1629 | if (token != NUMBER) { |
4615d498 | 1630 | parse_warn (cfile, "expecting number."); |
6b4b0ec7 TL |
1631 | skip_to_rbrace (cfile, recordp); |
1632 | if (recordp) | |
1633 | skip_to_semi (cfile); | |
1634 | return 0; | |
1635 | } | |
1636 | switch (atoi (val)) { | |
1637 | case 8: | |
1638 | type = is_signed ? 'b' : 'B'; | |
1639 | break; | |
1640 | case 16: | |
1641 | type = is_signed ? 's' : 'S'; | |
1642 | break; | |
1643 | case 32: | |
1644 | type = is_signed ? 'l' : 'L'; | |
1645 | break; | |
1646 | default: | |
4615d498 TL |
1647 | parse_warn (cfile, |
1648 | "%s bit precision is not supported.", val); | |
6b4b0ec7 TL |
1649 | skip_to_rbrace (cfile, recordp); |
1650 | if (recordp) | |
1651 | skip_to_semi (cfile); | |
1652 | return 0; | |
1653 | } | |
1654 | break; | |
1655 | case SIGNED: | |
1656 | is_signed = 1; | |
1657 | parse_signed: | |
b3519f23 | 1658 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1659 | if (token != INTEGER) { |
4615d498 | 1660 | parse_warn (cfile, "expecting \"integer\" keyword."); |
6b4b0ec7 TL |
1661 | skip_to_rbrace (cfile, recordp); |
1662 | if (recordp) | |
1663 | skip_to_semi (cfile); | |
1664 | return 0; | |
1665 | } | |
1666 | goto parse_integer; | |
1667 | case UNSIGNED: | |
1668 | is_signed = 0; | |
1669 | goto parse_signed; | |
1670 | ||
1671 | case IP_ADDRESS: | |
1672 | type = 'I'; | |
1673 | break; | |
98bd7ca0 DH |
1674 | case IP6_ADDRESS: |
1675 | type = '6'; | |
1676 | break; | |
d758ad8c TL |
1677 | case DOMAIN_NAME: |
1678 | type = 'd'; | |
1679 | goto no_arrays; | |
dba5803b | 1680 | case DOMAIN_LIST: |
98bd7ca0 DH |
1681 | /* Consume optional compression indicator. */ |
1682 | token = peek_token(&val, NULL, cfile); | |
1683 | if (token == COMPRESSED) { | |
dc9d7b08 | 1684 | skip_token(&val, NULL, cfile); |
98bd7ca0 DH |
1685 | tokbuf[tokix++] = 'D'; |
1686 | type = 'c'; | |
1687 | } else | |
1688 | type = 'D'; | |
dba5803b | 1689 | goto no_arrays; |
6b4b0ec7 TL |
1690 | case TEXT: |
1691 | type = 't'; | |
1692 | no_arrays: | |
1693 | if (arrayp) { | |
4615d498 | 1694 | parse_warn (cfile, "arrays of text strings not %s", |
6b4b0ec7 TL |
1695 | "yet supported."); |
1696 | skip_to_rbrace (cfile, recordp); | |
1697 | if (recordp) | |
1698 | skip_to_semi (cfile); | |
1699 | return 0; | |
1700 | } | |
1701 | no_more_in_record = 1; | |
1702 | break; | |
ef91cb39 | 1703 | case STRING_TOKEN: |
6b4b0ec7 TL |
1704 | type = 'X'; |
1705 | goto no_arrays; | |
1706 | ||
962dc4ab | 1707 | case ENCAPSULATE: |
b3519f23 | 1708 | token = next_token (&val, (unsigned *)0, cfile); |
962dc4ab TL |
1709 | if (!is_identifier (token)) { |
1710 | parse_warn (cfile, | |
1711 | "expecting option space identifier"); | |
1712 | skip_to_semi (cfile); | |
1713 | return 0; | |
1714 | } | |
98bd7ca0 DH |
1715 | encapsulated = NULL; |
1716 | if (!universe_hash_lookup(&encapsulated, universe_hash, | |
1717 | val, strlen(val), MDL)) { | |
a512d11b | 1718 | parse_warn(cfile, "unknown option space %s", val); |
98bd7ca0 DH |
1719 | skip_to_semi (cfile); |
1720 | return 0; | |
1721 | } | |
962dc4ab TL |
1722 | if (strlen (val) + tokix + 2 > sizeof (tokbuf)) |
1723 | goto toobig; | |
1724 | tokbuf [tokix++] = 'E'; | |
1725 | strcpy (&tokbuf [tokix], val); | |
1726 | tokix += strlen (val); | |
1727 | type = '.'; | |
1728 | has_encapsulation = 1; | |
1729 | break; | |
1730 | ||
4cafb815 EH |
1731 | case ZEROLEN: |
1732 | type = 'Z'; | |
1733 | if (arrayp) { | |
1734 | parse_warn (cfile, "array incompatible with zerolen."); | |
1735 | skip_to_rbrace (cfile, recordp); | |
1736 | if (recordp) | |
1737 | skip_to_semi (cfile); | |
1738 | return 0; | |
1739 | } | |
1740 | no_more_in_record = 1; | |
1741 | break; | |
1742 | ||
6b4b0ec7 | 1743 | default: |
4615d498 | 1744 | parse_warn (cfile, "unknown data type %s", val); |
6b4b0ec7 TL |
1745 | skip_to_rbrace (cfile, recordp); |
1746 | if (recordp) | |
1747 | skip_to_semi (cfile); | |
1748 | return 0; | |
1749 | } | |
1750 | ||
1751 | if (tokix == sizeof tokbuf) { | |
962dc4ab | 1752 | toobig: |
4615d498 | 1753 | parse_warn (cfile, "too many types in record."); |
6b4b0ec7 TL |
1754 | skip_to_rbrace (cfile, recordp); |
1755 | if (recordp) | |
1756 | skip_to_semi (cfile); | |
1757 | return 0; | |
1758 | } | |
1759 | tokbuf [tokix++] = type; | |
1760 | ||
1761 | if (recordp) { | |
b3519f23 | 1762 | token = next_token (&val, (unsigned *)0, cfile); |
d8fc5060 TL |
1763 | if (arrayp > recordp) { |
1764 | if (tokix == sizeof tokbuf) { | |
1765 | parse_warn (cfile, | |
1766 | "too many types in record."); | |
1767 | skip_to_rbrace (cfile, 1); | |
1768 | skip_to_semi (cfile); | |
1769 | return 0; | |
1770 | } | |
1771 | arrayp = 0; | |
1772 | tokbuf[tokix++] = 'a'; | |
1773 | } | |
6b4b0ec7 TL |
1774 | if (token == COMMA) { |
1775 | if (no_more_in_record) { | |
4615d498 TL |
1776 | parse_warn (cfile, |
1777 | "%s must be at end of record.", | |
6b4b0ec7 TL |
1778 | type == 't' ? "text" : "string"); |
1779 | skip_to_rbrace (cfile, 1); | |
1780 | if (recordp) | |
1781 | skip_to_semi (cfile); | |
1782 | return 0; | |
1783 | } | |
b3519f23 | 1784 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 TL |
1785 | goto next_type; |
1786 | } | |
1787 | if (token != RBRACE) { | |
4615d498 | 1788 | parse_warn (cfile, "expecting right brace."); |
6b4b0ec7 TL |
1789 | skip_to_rbrace (cfile, 1); |
1790 | if (recordp) | |
1791 | skip_to_semi (cfile); | |
1792 | return 0; | |
1793 | } | |
1794 | } | |
1795 | if (!parse_semi (cfile)) { | |
4615d498 | 1796 | parse_warn (cfile, "semicolon expected."); |
6b4b0ec7 TL |
1797 | skip_to_semi (cfile); |
1798 | if (recordp) | |
1799 | skip_to_semi (cfile); | |
1800 | return 0; | |
1801 | } | |
962dc4ab TL |
1802 | if (has_encapsulation && arrayp) { |
1803 | parse_warn (cfile, | |
1804 | "Arrays of encapsulations don't make sense."); | |
1805 | return 0; | |
1806 | } | |
98bd7ca0 DH |
1807 | s = dmalloc(tokix + (arrayp ? 1 : 0) + 1, MDL); |
1808 | if (s == NULL) { | |
1809 | log_fatal("no memory for option format."); | |
1810 | } | |
1811 | memcpy(s, tokbuf, tokix); | |
1812 | if (arrayp) { | |
1813 | s[tokix++] = (arrayp > recordp) ? 'a' : 'A'; | |
1814 | } | |
1815 | s[tokix] = '\0'; | |
1816 | ||
b1b7b521 | 1817 | option -> format = s; |
f7fdb216 DH |
1818 | |
1819 | oldopt = NULL; | |
1820 | option_code_hash_lookup(&oldopt, option->universe->code_hash, | |
1821 | &option->code, 0, MDL); | |
86f1d4b7 DH |
1822 | if (oldopt != NULL) { |
1823 | /* | |
1824 | * XXX: This illegalizes a configuration syntax that was | |
1825 | * valid in 3.0.x, where multiple name->code mappings are | |
1826 | * given, but only one code->name mapping survives. It is | |
1827 | * unclear what can or should be done at this point, but it | |
1828 | * seems best to retain 3.0.x behaviour for upgrades to go | |
1829 | * smoothly. | |
1830 | * | |
f7fdb216 DH |
1831 | option_name_hash_delete(option->universe->name_hash, |
1832 | oldopt->name, 0, MDL); | |
86f1d4b7 | 1833 | */ |
f7fdb216 DH |
1834 | option_code_hash_delete(option->universe->code_hash, |
1835 | &oldopt->code, 0, MDL); | |
1836 | ||
1837 | option_dereference(&oldopt, MDL); | |
6b4b0ec7 | 1838 | } |
f7fdb216 DH |
1839 | option_code_hash_add(option->universe->code_hash, &option->code, 0, |
1840 | option, MDL); | |
1841 | option_name_hash_add(option->universe->name_hash, option->name, 0, | |
1842 | option, MDL); | |
98bd7ca0 DH |
1843 | if (has_encapsulation) { |
1844 | /* INSIST(tokbuf[0] == 'E'); */ | |
1845 | /* INSIST(encapsulated != NULL); */ | |
1846 | if (!option_code_hash_lookup(&encapsulated->enc_opt, | |
1847 | option->universe->code_hash, | |
1848 | &option->code, 0, MDL)) { | |
1849 | log_fatal("error finding encapsulated option (%s:%d)", | |
1850 | MDL); | |
1851 | } | |
1852 | } | |
6b4b0ec7 TL |
1853 | return 1; |
1854 | } | |
1855 | ||
028b1f6a TL |
1856 | /* |
1857 | * base64 :== NUMBER_OR_STRING | |
1858 | */ | |
1859 | ||
1860 | int parse_base64 (data, cfile) | |
1861 | struct data_string *data; | |
1862 | struct parse *cfile; | |
1863 | { | |
028b1f6a | 1864 | const char *val; |
8f01f9ec | 1865 | int i, j, k; |
028b1f6a | 1866 | unsigned acc = 0; |
6b474b5b TL |
1867 | static unsigned char |
1868 | from64 [] = {64, 64, 64, 64, 64, 64, 64, 64, /* \"#$%&' */ | |
1869 | 64, 64, 64, 62, 64, 64, 64, 63, /* ()*+,-./ */ | |
1870 | 52, 53, 54, 55, 56, 57, 58, 59, /* 01234567 */ | |
d758ad8c | 1871 | 60, 61, 64, 64, 64, 64, 64, 64, /* 89:;<=>? */ |
6b474b5b TL |
1872 | 64, 0, 1, 2, 3, 4, 5, 6, /* @ABCDEFG */ |
1873 | 7, 8, 9, 10, 11, 12, 13, 14, /* HIJKLMNO */ | |
1874 | 15, 16, 17, 18, 19, 20, 21, 22, /* PQRSTUVW */ | |
1875 | 23, 24, 25, 64, 64, 64, 64, 64, /* XYZ[\]^_ */ | |
1876 | 64, 26, 27, 28, 29, 30, 31, 32, /* 'abcdefg */ | |
1877 | 33, 34, 35, 36, 37, 38, 39, 40, /* hijklmno */ | |
1878 | 41, 42, 43, 44, 45, 46, 47, 48, /* pqrstuvw */ | |
630786fc | 1879 | 49, 50, 51, 64, 64, 64, 64, 64}; /* xyz{|}~ */ |
962d5eab SR |
1880 | struct string_list *bufs = NULL, |
1881 | *last = NULL, | |
8f01f9ec TL |
1882 | *t; |
1883 | int cc = 0; | |
1884 | int terminated = 0; | |
962d5eab | 1885 | int valid_base64; |
028b1f6a | 1886 | |
8f01f9ec TL |
1887 | /* It's possible for a + or a / to cause a base64 quantity to be |
1888 | tokenized into more than one token, so we have to parse them all | |
1889 | in before decoding. */ | |
1890 | do { | |
b3519f23 | 1891 | unsigned l; |
8f01f9ec | 1892 | |
8acc987b | 1893 | (void)next_token(&val, &l, cfile); |
962d5eab SR |
1894 | t = dmalloc(l + sizeof(*t), MDL); |
1895 | if (t == NULL) | |
1896 | log_fatal("no memory for base64 buffer."); | |
1897 | memset(t, 0, (sizeof(*t)) - 1); | |
1898 | memcpy(t->string, val, l + 1); | |
8f01f9ec TL |
1899 | cc += l; |
1900 | if (last) | |
962d5eab | 1901 | last->next = t; |
8f01f9ec TL |
1902 | else |
1903 | bufs = t; | |
1904 | last = t; | |
8acc987b | 1905 | (void)peek_token(&val, NULL, cfile); |
962d5eab SR |
1906 | valid_base64 = 1; |
1907 | for (i = 0; val[i]; i++) { | |
1908 | /* Check to see if the character is valid. It | |
1909 | may be out of range or within the right range | |
1910 | but not used in the mapping */ | |
1911 | if (((val[i] < ' ') || (val[i] > 'z')) || | |
1912 | ((from64[val[i] - ' '] > 63) && (val[i] != '='))) { | |
1913 | valid_base64 = 0; | |
1914 | break; /* no need to continue for loop */ | |
1915 | } | |
1916 | } | |
1917 | } while (valid_base64); | |
8f01f9ec | 1918 | |
962d5eab SR |
1919 | data->len = cc; |
1920 | data->len = (data->len * 3) / 4; | |
1921 | if (!buffer_allocate(&data->buffer, data->len, MDL)) { | |
028b1f6a | 1922 | parse_warn (cfile, "can't allocate buffer for base64 data."); |
962d5eab SR |
1923 | data->len = 0; |
1924 | data->data = NULL; | |
0f750c4f | 1925 | goto out; |
028b1f6a TL |
1926 | } |
1927 | ||
8f01f9ec | 1928 | j = k = 0; |
962d5eab SR |
1929 | for (t = bufs; t; t = t->next) { |
1930 | for (i = 0; t->string[i]; i++) { | |
1931 | unsigned foo = t->string[i]; | |
8f01f9ec | 1932 | if (terminated && foo != '=') { |
962d5eab SR |
1933 | parse_warn(cfile, |
1934 | "stuff after base64 '=' terminator: %s.", | |
1935 | &t->string[i]); | |
8f01f9ec TL |
1936 | goto bad; |
1937 | } | |
962d5eab | 1938 | if ((foo < ' ') || (foo > 'z')) { |
028b1f6a | 1939 | bad64: |
962d5eab SR |
1940 | parse_warn(cfile, |
1941 | "invalid base64 character %d.", | |
1942 | t->string[i]); | |
8f01f9ec | 1943 | bad: |
962d5eab | 1944 | data_string_forget(data, MDL); |
8f01f9ec | 1945 | goto out; |
028b1f6a | 1946 | } |
8f01f9ec TL |
1947 | if (foo == '=') |
1948 | terminated = 1; | |
1949 | else { | |
962d5eab | 1950 | foo = from64[foo - ' ']; |
8f01f9ec TL |
1951 | if (foo == 64) |
1952 | goto bad64; | |
1953 | acc = (acc << 6) + foo; | |
1954 | switch (k % 4) { | |
1955 | case 0: | |
1956 | break; | |
1957 | case 1: | |
962d5eab | 1958 | data->buffer->data[j++] = (acc >> 4); |
8f01f9ec TL |
1959 | acc = acc & 0x0f; |
1960 | break; | |
1961 | ||
1962 | case 2: | |
962d5eab | 1963 | data->buffer->data[j++] = (acc >> 2); |
8f01f9ec TL |
1964 | acc = acc & 0x03; |
1965 | break; | |
1966 | case 3: | |
962d5eab | 1967 | data->buffer->data[j++] = acc; |
8f01f9ec TL |
1968 | acc = 0; |
1969 | break; | |
1970 | } | |
1971 | } | |
1972 | k++; | |
1973 | } | |
1974 | } | |
1975 | if (k % 4) { | |
1976 | if (acc) { | |
962d5eab SR |
1977 | parse_warn(cfile, |
1978 | "partial base64 value left over: %d.", | |
1979 | acc); | |
028b1f6a TL |
1980 | } |
1981 | } | |
962d5eab SR |
1982 | data->len = j; |
1983 | data->data = data->buffer->data; | |
8f01f9ec TL |
1984 | out: |
1985 | for (t = bufs; t; t = last) { | |
962d5eab SR |
1986 | last = t->next; |
1987 | dfree(t, MDL); | |
8f01f9ec | 1988 | } |
962d5eab | 1989 | if (data->len) |
8f01f9ec TL |
1990 | return 1; |
1991 | else | |
1992 | return 0; | |
028b1f6a TL |
1993 | } |
1994 | ||
1995 | ||
be6be08d | 1996 | /* |
c57db45c SK |
1997 | * colon-separated-hex-list :== NUMBER | |
1998 | * NUMBER COLON colon-separated-hex-list | |
be6be08d TL |
1999 | */ |
2000 | ||
02a015fb TL |
2001 | int parse_cshl (data, cfile) |
2002 | struct data_string *data; | |
4615d498 | 2003 | struct parse *cfile; |
4761e04b | 2004 | { |
c5b0f529 | 2005 | u_int8_t ibuf [128]; |
b1b7b521 TL |
2006 | unsigned ilen = 0; |
2007 | unsigned tlen = 0; | |
4761e04b TL |
2008 | struct option_tag *sl = (struct option_tag *)0; |
2009 | struct option_tag *next, **last = &sl; | |
02a015fb | 2010 | enum dhcp_token token; |
b1b7b521 | 2011 | const char *val; |
02a015fb | 2012 | unsigned char *rvp; |
4761e04b TL |
2013 | |
2014 | do { | |
b3519f23 | 2015 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b | 2016 | if (token != NUMBER && token != NUMBER_OR_NAME) { |
4615d498 | 2017 | parse_warn (cfile, "expecting hexadecimal number."); |
4761e04b TL |
2018 | skip_to_semi (cfile); |
2019 | for (; sl; sl = next) { | |
2020 | next = sl -> next; | |
fdac15d9 | 2021 | dfree (sl, MDL); |
4761e04b | 2022 | } |
02a015fb | 2023 | return 0; |
4761e04b TL |
2024 | } |
2025 | if (ilen == sizeof ibuf) { | |
2026 | next = (struct option_tag *) | |
2027 | dmalloc (ilen - 1 + | |
fdac15d9 | 2028 | sizeof (struct option_tag), MDL); |
4761e04b | 2029 | if (!next) |
8ae2d595 | 2030 | log_fatal ("no memory for string list."); |
4761e04b TL |
2031 | memcpy (next -> data, ibuf, ilen); |
2032 | *last = next; | |
2033 | last = &next -> next; | |
2034 | tlen += ilen; | |
2035 | ilen = 0; | |
2036 | } | |
4615d498 | 2037 | convert_num (cfile, &ibuf [ilen++], val, 16, 8); |
4761e04b | 2038 | |
b3519f23 | 2039 | token = peek_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
2040 | if (token != COLON) |
2041 | break; | |
dc9d7b08 | 2042 | skip_token(&val, (unsigned *)0, cfile); |
4761e04b TL |
2043 | } while (1); |
2044 | ||
4bd8800e | 2045 | if (!buffer_allocate (&data -> buffer, tlen + ilen, MDL)) |
8ae2d595 | 2046 | log_fatal ("no memory to store octet data."); |
02a015fb TL |
2047 | data -> data = &data -> buffer -> data [0]; |
2048 | data -> len = tlen + ilen; | |
2049 | data -> terminated = 0; | |
2050 | ||
b1b7b521 | 2051 | rvp = &data -> buffer -> data [0]; |
4761e04b TL |
2052 | while (sl) { |
2053 | next = sl -> next; | |
2054 | memcpy (rvp, sl -> data, sizeof ibuf); | |
2055 | rvp += sizeof ibuf; | |
fdac15d9 | 2056 | dfree (sl, MDL); |
4761e04b TL |
2057 | sl = next; |
2058 | } | |
2059 | ||
2060 | memcpy (rvp, ibuf, ilen); | |
02a015fb | 2061 | return 1; |
4761e04b | 2062 | } |
be6be08d TL |
2063 | |
2064 | /* | |
2065 | * executable-statements :== executable-statement executable-statements | | |
2066 | * executable-statement | |
2067 | * | |
2068 | * executable-statement :== | |
2069 | * IF if-statement | | |
2070 | * ADD class-name SEMI | | |
2071 | * BREAK SEMI | | |
2072 | * OPTION option-parameter SEMI | | |
2073 | * SUPERSEDE option-parameter SEMI | | |
2074 | * PREPEND option-parameter SEMI | | |
2075 | * APPEND option-parameter SEMI | |
2076 | */ | |
2077 | ||
f579f39f | 2078 | int parse_executable_statements (statements, cfile, lose, case_context) |
79a65726 | 2079 | struct executable_statement **statements; |
4615d498 | 2080 | struct parse *cfile; |
be6be08d | 2081 | int *lose; |
f579f39f | 2082 | enum expression_context case_context; |
be6be08d | 2083 | { |
79a65726 | 2084 | struct executable_statement **next; |
be6be08d | 2085 | |
79a65726 | 2086 | next = statements; |
f579f39f | 2087 | while (parse_executable_statement (next, cfile, lose, case_context)) |
be6be08d | 2088 | next = &((*next) -> next); |
02a015fb | 2089 | if (!*lose) |
79a65726 TL |
2090 | return 1; |
2091 | return 0; | |
be6be08d TL |
2092 | } |
2093 | ||
f579f39f | 2094 | int parse_executable_statement (result, cfile, lose, case_context) |
79a65726 | 2095 | struct executable_statement **result; |
4615d498 | 2096 | struct parse *cfile; |
be6be08d | 2097 | int *lose; |
f579f39f | 2098 | enum expression_context case_context; |
be6be08d | 2099 | { |
66cebfcb DH |
2100 | #if defined(ENABLE_EXECUTE) |
2101 | unsigned len; | |
2102 | struct expression **ep; | |
2103 | #endif | |
02a015fb | 2104 | enum dhcp_token token; |
b1b7b521 | 2105 | const char *val; |
be6be08d | 2106 | struct class *cta; |
272ef1bc | 2107 | struct option *option=NULL; |
b1013db7 | 2108 | struct option_cache *cache; |
b1b7b521 | 2109 | int known; |
0776fd12 | 2110 | int flag; |
88ab5737 | 2111 | int i; |
fa392aea | 2112 | struct dns_zone *zone; |
fa392aea | 2113 | isc_result_t status; |
d758ad8c | 2114 | char *s; |
be6be08d | 2115 | |
b3519f23 | 2116 | token = peek_token (&val, (unsigned *)0, cfile); |
b1013db7 | 2117 | switch (token) { |
5e864416 | 2118 | case DB_TIME_FORMAT: |
dc9d7b08 | 2119 | skip_token(&val, NULL, cfile); |
5e864416 DH |
2120 | token = next_token(&val, NULL, cfile); |
2121 | if (token == DEFAULT) { | |
2122 | db_time_format = DEFAULT_TIME_FORMAT; | |
2123 | } else if (token == LOCAL) { | |
2124 | db_time_format = LOCAL_TIME_FORMAT; | |
2125 | } else { | |
2126 | parse_warn(cfile, "Expecting 'local' or 'default'."); | |
2127 | if (token != SEMI) | |
2128 | skip_to_semi(cfile); | |
2129 | *lose = 1; | |
2130 | return 0; | |
2131 | } | |
2132 | ||
2133 | token = next_token(&val, NULL, cfile); | |
2134 | if (token != SEMI) { | |
2135 | parse_warn(cfile, "Expecting a semicolon."); | |
2136 | *lose = 1; | |
2137 | return 0; | |
2138 | } | |
2139 | ||
2140 | /* We're done here. */ | |
2141 | return 1; | |
2142 | ||
be6be08d | 2143 | case IF: |
dc9d7b08 | 2144 | skip_token(&val, (unsigned *)0, cfile); |
79a65726 TL |
2145 | return parse_if_statement (result, cfile, lose); |
2146 | ||
eb018e2b | 2147 | case TOKEN_ADD: |
dc9d7b08 | 2148 | skip_token(&val, (unsigned *)0, cfile); |
b3519f23 | 2149 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 2150 | if (token != STRING) { |
4615d498 | 2151 | parse_warn (cfile, "expecting class name."); |
be6be08d TL |
2152 | skip_to_semi (cfile); |
2153 | *lose = 1; | |
79a65726 | 2154 | return 0; |
be6be08d | 2155 | } |
20916cae TL |
2156 | cta = (struct class *)0; |
2157 | status = find_class (&cta, val, MDL); | |
2158 | if (status != ISC_R_SUCCESS) { | |
2159 | parse_warn (cfile, "class %s: %s", | |
2160 | val, isc_result_totext (status)); | |
be6be08d TL |
2161 | skip_to_semi (cfile); |
2162 | *lose = 1; | |
79a65726 | 2163 | return 0; |
be6be08d TL |
2164 | } |
2165 | if (!parse_semi (cfile)) { | |
2166 | *lose = 1; | |
79a65726 | 2167 | return 0; |
be6be08d | 2168 | } |
4bd8800e | 2169 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
2170 | log_fatal ("no memory for new statement."); |
2171 | (*result) -> op = add_statement; | |
2172 | (*result) -> data.add = cta; | |
be6be08d TL |
2173 | break; |
2174 | ||
2175 | case BREAK: | |
dc9d7b08 | 2176 | skip_token(&val, (unsigned *)0, cfile); |
be6be08d TL |
2177 | if (!parse_semi (cfile)) { |
2178 | *lose = 1; | |
79a65726 | 2179 | return 0; |
be6be08d | 2180 | } |
4bd8800e | 2181 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
2182 | log_fatal ("no memory for new statement."); |
2183 | (*result) -> op = break_statement; | |
be6be08d TL |
2184 | break; |
2185 | ||
25541f2f | 2186 | case SEND: |
dc9d7b08 | 2187 | skip_token(&val, (unsigned *)0, cfile); |
1898dcf7 | 2188 | known = 0; |
f7fdb216 DH |
2189 | status = parse_option_name (cfile, 0, &known, &option); |
2190 | if (status != ISC_R_SUCCESS || option == NULL) { | |
1898dcf7 TL |
2191 | *lose = 1; |
2192 | return 0; | |
2193 | } | |
f7fdb216 DH |
2194 | status = parse_option_statement(result, cfile, 1, option, |
2195 | send_option_statement); | |
2196 | option_dereference(&option, MDL); | |
2197 | return status; | |
25541f2f TL |
2198 | |
2199 | case SUPERSEDE: | |
be6be08d | 2200 | case OPTION: |
dc9d7b08 | 2201 | skip_token(&val, (unsigned *)0, cfile); |
b1b7b521 | 2202 | known = 0; |
f7fdb216 DH |
2203 | status = parse_option_name (cfile, 0, &known, &option); |
2204 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2205 | *lose = 1; |
79a65726 | 2206 | return 0; |
be6be08d | 2207 | } |
f7fdb216 DH |
2208 | status = parse_option_statement(result, cfile, 1, option, |
2209 | supersede_option_statement); | |
2210 | option_dereference(&option, MDL); | |
2211 | return status; | |
be6be08d | 2212 | |
b1013db7 | 2213 | case ALLOW: |
0776fd12 TL |
2214 | flag = 1; |
2215 | goto pad; | |
b1013db7 | 2216 | case DENY: |
0776fd12 TL |
2217 | flag = 0; |
2218 | goto pad; | |
2219 | case IGNORE: | |
2220 | flag = 2; | |
2221 | pad: | |
dc9d7b08 | 2222 | skip_token(&val, (unsigned *)0, cfile); |
b1013db7 | 2223 | cache = (struct option_cache *)0; |
2db25842 | 2224 | if (!parse_allow_deny (&cache, cfile, flag)) |
79a65726 | 2225 | return 0; |
4bd8800e | 2226 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
2227 | log_fatal ("no memory for new statement."); |
2228 | (*result) -> op = supersede_option_statement; | |
2229 | (*result) -> data.option = cache; | |
b1013db7 TL |
2230 | break; |
2231 | ||
be6be08d | 2232 | case DEFAULT: |
dc9d7b08 | 2233 | skip_token(&val, (unsigned *)0, cfile); |
b3519f23 | 2234 | token = peek_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2235 | if (token == COLON) |
2236 | goto switch_default; | |
b1b7b521 | 2237 | known = 0; |
f7fdb216 DH |
2238 | status = parse_option_name (cfile, 0, &known, &option); |
2239 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2240 | *lose = 1; |
79a65726 | 2241 | return 0; |
be6be08d | 2242 | } |
f7fdb216 DH |
2243 | status = parse_option_statement(result, cfile, 1, option, |
2244 | default_option_statement); | |
2245 | option_dereference(&option, MDL); | |
2246 | return status; | |
be6be08d TL |
2247 | |
2248 | case PREPEND: | |
dc9d7b08 | 2249 | skip_token(&val, (unsigned *)0, cfile); |
b1b7b521 | 2250 | known = 0; |
f7fdb216 DH |
2251 | status = parse_option_name (cfile, 0, &known, &option); |
2252 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2253 | *lose = 1; |
79a65726 | 2254 | return 0; |
be6be08d | 2255 | } |
f7fdb216 DH |
2256 | status = parse_option_statement(result, cfile, 1, option, |
2257 | prepend_option_statement); | |
2258 | option_dereference(&option, MDL); | |
2259 | return status; | |
be6be08d TL |
2260 | |
2261 | case APPEND: | |
dc9d7b08 | 2262 | skip_token(&val, (unsigned *)0, cfile); |
b1b7b521 | 2263 | known = 0; |
f7fdb216 DH |
2264 | status = parse_option_name (cfile, 0, &known, &option); |
2265 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2266 | *lose = 1; |
79a65726 | 2267 | return 0; |
be6be08d | 2268 | } |
f7fdb216 DH |
2269 | status = parse_option_statement(result, cfile, 1, option, |
2270 | append_option_statement); | |
2271 | option_dereference(&option, MDL); | |
2272 | return status; | |
be6be08d | 2273 | |
79a65726 | 2274 | case ON: |
dc9d7b08 | 2275 | skip_token(&val, (unsigned *)0, cfile); |
79a65726 TL |
2276 | return parse_on_statement (result, cfile, lose); |
2277 | ||
f579f39f | 2278 | case SWITCH: |
dc9d7b08 | 2279 | skip_token(&val, (unsigned *)0, cfile); |
f579f39f TL |
2280 | return parse_switch_statement (result, cfile, lose); |
2281 | ||
2282 | case CASE: | |
dc9d7b08 | 2283 | skip_token(&val, (unsigned *)0, cfile); |
f579f39f TL |
2284 | if (case_context == context_any) { |
2285 | parse_warn (cfile, | |
2286 | "case statement in inappropriate scope."); | |
2287 | *lose = 1; | |
2288 | skip_to_semi (cfile); | |
2289 | return 0; | |
2290 | } | |
2291 | return parse_case_statement (result, | |
2292 | cfile, lose, case_context); | |
2293 | ||
2294 | switch_default: | |
dc9d7b08 | 2295 | skip_token(&val, (unsigned *)0, cfile); |
f579f39f TL |
2296 | if (case_context == context_any) { |
2297 | parse_warn (cfile, "switch default statement in %s", | |
2298 | "inappropriate scope."); | |
2299 | ||
2300 | *lose = 1; | |
2301 | return 0; | |
2302 | } else { | |
4bd8800e | 2303 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
2304 | log_fatal ("no memory for default statement."); |
2305 | (*result) -> op = default_statement; | |
2306 | return 1; | |
2307 | } | |
2308 | ||
31cb2a5f | 2309 | case DEFINE: |
f579f39f | 2310 | case TOKEN_SET: |
dc9d7b08 | 2311 | skip_token(&val, (unsigned *)0, cfile); |
31cb2a5f TL |
2312 | if (token == DEFINE) |
2313 | flag = 1; | |
2314 | else | |
2315 | flag = 0; | |
f579f39f | 2316 | |
b3519f23 | 2317 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2318 | if (token != NAME && token != NUMBER_OR_NAME) { |
2319 | parse_warn (cfile, | |
2320 | "%s can't be a variable name", val); | |
2321 | badset: | |
2322 | skip_to_semi (cfile); | |
2323 | *lose = 1; | |
2324 | return 0; | |
2325 | } | |
2326 | ||
4bd8800e | 2327 | if (!executable_statement_allocate (result, MDL)) |
f579f39f | 2328 | log_fatal ("no memory for set statement."); |
31cb2a5f | 2329 | (*result) -> op = flag ? define_statement : set_statement; |
fdac15d9 | 2330 | (*result) -> data.set.name = dmalloc (strlen (val) + 1, MDL); |
f579f39f TL |
2331 | if (!(*result)->data.set.name) |
2332 | log_fatal ("can't allocate variable name"); | |
2333 | strcpy ((*result) -> data.set.name, val); | |
b3519f23 | 2334 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f | 2335 | |
31cb2a5f TL |
2336 | if (token == LPAREN) { |
2337 | struct string_list *head, *cur, *new; | |
2338 | struct expression *expr; | |
2339 | head = cur = (struct string_list *)0; | |
2340 | do { | |
b3519f23 TL |
2341 | token = next_token (&val, |
2342 | (unsigned *)0, cfile); | |
31cb2a5f TL |
2343 | if (token == RPAREN) |
2344 | break; | |
2345 | if (token != NAME && token != NUMBER_OR_NAME) { | |
2346 | parse_warn (cfile, | |
2347 | "expecting argument name"); | |
2348 | skip_to_rbrace (cfile, 0); | |
2349 | *lose = 1; | |
2350 | executable_statement_dereference | |
2351 | (result, MDL); | |
2352 | return 0; | |
2353 | } | |
2354 | new = ((struct string_list *) | |
2355 | dmalloc (sizeof (struct string_list) + | |
2356 | strlen (val), MDL)); | |
2357 | if (!new) | |
2358 | log_fatal ("can't allocate string."); | |
2359 | memset (new, 0, sizeof *new); | |
2360 | strcpy (new -> string, val); | |
2361 | if (cur) { | |
2362 | cur -> next = new; | |
2363 | cur = new; | |
2364 | } else { | |
2365 | head = cur = new; | |
2366 | } | |
b3519f23 TL |
2367 | token = next_token (&val, |
2368 | (unsigned *)0, cfile); | |
31cb2a5f TL |
2369 | } while (token == COMMA); |
2370 | ||
2371 | if (token != RPAREN) { | |
2372 | parse_warn (cfile, "expecting right paren."); | |
2373 | badx: | |
2374 | skip_to_semi (cfile); | |
f579f39f | 2375 | *lose = 1; |
31cb2a5f TL |
2376 | executable_statement_dereference (result, MDL); |
2377 | return 0; | |
2378 | } | |
2379 | ||
b3519f23 | 2380 | token = next_token (&val, (unsigned *)0, cfile); |
31cb2a5f TL |
2381 | if (token != LBRACE) { |
2382 | parse_warn (cfile, "expecting left brace."); | |
2383 | goto badx; | |
2384 | } | |
2385 | ||
2386 | expr = (struct expression *)0; | |
2387 | if (!(expression_allocate (&expr, MDL))) | |
2388 | log_fatal ("can't allocate expression."); | |
2389 | expr -> op = expr_function; | |
2390 | if (!fundef_allocate (&expr -> data.func, MDL)) | |
2391 | log_fatal ("can't allocate fundef."); | |
2392 | expr -> data.func -> args = head; | |
2393 | (*result) -> data.set.expr = expr; | |
2394 | ||
2395 | if (!(parse_executable_statements | |
2396 | (&expr -> data.func -> statements, cfile, lose, | |
2397 | case_context))) { | |
2398 | if (*lose) | |
2399 | goto badx; | |
2400 | } | |
2401 | ||
b3519f23 | 2402 | token = next_token (&val, (unsigned *)0, cfile); |
31cb2a5f TL |
2403 | if (token != RBRACE) { |
2404 | parse_warn (cfile, "expecting rigt brace."); | |
2405 | goto badx; | |
2406 | } | |
2407 | } else { | |
2408 | if (token != EQUAL) { | |
2409 | parse_warn (cfile, | |
2410 | "expecting '=' in %s statement.", | |
2411 | flag ? "define" : "set"); | |
2412 | goto badset; | |
2413 | } | |
2414 | ||
2415 | if (!parse_expression (&(*result) -> data.set.expr, | |
2416 | cfile, lose, context_any, | |
2417 | (struct expression **)0, | |
2418 | expr_none)) { | |
2419 | if (!*lose) | |
2420 | parse_warn (cfile, | |
2421 | "expecting expression."); | |
2422 | else | |
2423 | *lose = 1; | |
2424 | skip_to_semi (cfile); | |
2425 | executable_statement_dereference (result, MDL); | |
2426 | return 0; | |
2427 | } | |
98311e4b DH |
2428 | if (!parse_semi (cfile)) { |
2429 | *lose = 1; | |
2430 | executable_statement_dereference (result, MDL); | |
2431 | return 0; | |
2432 | } | |
f579f39f | 2433 | } |
f579f39f TL |
2434 | break; |
2435 | ||
fdac15d9 | 2436 | case UNSET: |
dc9d7b08 | 2437 | skip_token(&val, (unsigned *)0, cfile); |
b3519f23 | 2438 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
2439 | if (token != NAME && token != NUMBER_OR_NAME) { |
2440 | parse_warn (cfile, | |
2441 | "%s can't be a variable name", val); | |
fdac15d9 TL |
2442 | skip_to_semi (cfile); |
2443 | *lose = 1; | |
2444 | return 0; | |
2445 | } | |
2446 | ||
4bd8800e | 2447 | if (!executable_statement_allocate (result, MDL)) |
fdac15d9 TL |
2448 | log_fatal ("no memory for set statement."); |
2449 | (*result) -> op = unset_statement; | |
2450 | (*result) -> data.unset = dmalloc (strlen (val) + 1, MDL); | |
2451 | if (!(*result)->data.unset) | |
2452 | log_fatal ("can't allocate variable name"); | |
2453 | strcpy ((*result) -> data.unset, val); | |
98311e4b DH |
2454 | if (!parse_semi (cfile)) { |
2455 | *lose = 1; | |
2456 | executable_statement_dereference (result, MDL); | |
2457 | return 0; | |
2458 | } | |
fdac15d9 TL |
2459 | break; |
2460 | ||
2461 | case EVAL: | |
dc9d7b08 | 2462 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 2463 | if (!executable_statement_allocate (result, MDL)) |
fdac15d9 TL |
2464 | log_fatal ("no memory for eval statement."); |
2465 | (*result) -> op = eval_statement; | |
2466 | ||
2467 | if (!parse_expression (&(*result) -> data.eval, | |
2468 | cfile, lose, context_data, /* XXX */ | |
2469 | (struct expression **)0, expr_none)) { | |
2470 | if (!*lose) | |
2471 | parse_warn (cfile, | |
2472 | "expecting data expression."); | |
2473 | else | |
2474 | *lose = 1; | |
2475 | skip_to_semi (cfile); | |
4bd8800e | 2476 | executable_statement_dereference (result, MDL); |
fdac15d9 TL |
2477 | return 0; |
2478 | } | |
98311e4b DH |
2479 | if (!parse_semi (cfile)) { |
2480 | *lose = 1; | |
2481 | executable_statement_dereference (result, MDL); | |
2482 | } | |
fdac15d9 TL |
2483 | break; |
2484 | ||
253c8b6a EH |
2485 | case EXECUTE: |
2486 | #ifdef ENABLE_EXECUTE | |
dc9d7b08 | 2487 | skip_token(&val, NULL, cfile); |
253c8b6a EH |
2488 | |
2489 | if (!executable_statement_allocate (result, MDL)) | |
2490 | log_fatal ("no memory for execute statement."); | |
2491 | (*result)->op = execute_statement; | |
2492 | ||
2493 | token = next_token(&val, NULL, cfile); | |
2494 | if (token != LPAREN) { | |
2495 | parse_warn(cfile, "left parenthesis expected."); | |
2496 | skip_to_semi(cfile); | |
2497 | *lose = 1; | |
2498 | return 0; | |
2499 | } | |
2500 | ||
2501 | token = next_token(&val, &len, cfile); | |
2502 | if (token != STRING) { | |
2503 | parse_warn(cfile, "Expecting a quoted string."); | |
2504 | skip_to_semi(cfile); | |
2505 | *lose = 1; | |
2506 | return 0; | |
2507 | } | |
2508 | ||
2509 | (*result)->data.execute.command = dmalloc(len + 1, MDL); | |
2510 | if ((*result)->data.execute.command == NULL) | |
2511 | log_fatal("can't allocate command name"); | |
2512 | strcpy((*result)->data.execute.command, val); | |
2513 | ||
2514 | ep = &(*result)->data.execute.arglist; | |
2515 | (*result)->data.execute.argc = 0; | |
2516 | ||
2517 | while((token = next_token(&val, NULL, cfile)) == COMMA) { | |
2518 | if (!expression_allocate(ep, MDL)) | |
2519 | log_fatal ("can't allocate expression"); | |
2520 | ||
2521 | if (!parse_data_expression (&(*ep) -> data.arg.val, | |
2522 | cfile, lose)) { | |
2523 | if (!*lose) { | |
2524 | parse_warn (cfile, | |
2525 | "expecting expression."); | |
2526 | *lose = 1; | |
2527 | } | |
2528 | skip_to_semi(cfile); | |
2529 | *lose = 1; | |
2530 | return 0; | |
2531 | } | |
2532 | ep = &(*ep)->data.arg.next; | |
2533 | (*result)->data.execute.argc++; | |
2534 | } | |
2535 | ||
2536 | if (token != RPAREN) { | |
2537 | parse_warn(cfile, "right parenthesis expected."); | |
2538 | skip_to_semi(cfile); | |
2539 | *lose = 1; | |
2540 | return 0; | |
2541 | } | |
2542 | ||
2543 | if (!parse_semi (cfile)) { | |
2544 | *lose = 1; | |
2545 | executable_statement_dereference (result, MDL); | |
2546 | } | |
2547 | #else /* ! ENABLE_EXECUTE */ | |
2548 | parse_warn(cfile, "define ENABLE_EXECUTE in site.h to " | |
2549 | "enable execute(); expressions."); | |
2550 | skip_to_semi(cfile); | |
2551 | *lose = 1; | |
2552 | return 0; | |
2553 | #endif /* ENABLE_EXECUTE */ | |
2554 | break; | |
2555 | ||
1b234d44 | 2556 | case RETURN: |
dc9d7b08 | 2557 | skip_token(&val, (unsigned *)0, cfile); |
1b234d44 DN |
2558 | |
2559 | if (!executable_statement_allocate (result, MDL)) | |
2560 | log_fatal ("no memory for return statement."); | |
2561 | (*result) -> op = return_statement; | |
2562 | ||
2563 | if (!parse_expression (&(*result) -> data.retval, | |
2564 | cfile, lose, context_data, | |
2565 | (struct expression **)0, expr_none)) { | |
2566 | if (!*lose) | |
2567 | parse_warn (cfile, | |
2568 | "expecting data expression."); | |
2569 | else | |
2570 | *lose = 1; | |
2571 | skip_to_semi (cfile); | |
2572 | executable_statement_dereference (result, MDL); | |
2573 | return 0; | |
2574 | } | |
98311e4b DH |
2575 | if (!parse_semi (cfile)) { |
2576 | *lose = 1; | |
2577 | executable_statement_dereference (result, MDL); | |
2578 | return 0; | |
2579 | } | |
1b234d44 DN |
2580 | break; |
2581 | ||
e7a9c293 | 2582 | case LOG: |
dc9d7b08 | 2583 | skip_token(&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2584 | |
2585 | if (!executable_statement_allocate (result, MDL)) | |
2586 | log_fatal ("no memory for log statement."); | |
2587 | (*result) -> op = log_statement; | |
2588 | ||
b3519f23 | 2589 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2590 | if (token != LPAREN) { |
2591 | parse_warn (cfile, "left parenthesis expected."); | |
2592 | skip_to_semi (cfile); | |
2593 | *lose = 1; | |
2594 | return 0; | |
2595 | } | |
2596 | ||
b3519f23 | 2597 | token = peek_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2598 | i = 1; |
2599 | if (token == FATAL) { | |
2600 | (*result) -> data.log.priority = log_priority_fatal; | |
2601 | } else if (token == ERROR) { | |
2602 | (*result) -> data.log.priority = log_priority_error; | |
2603 | } else if (token == TOKEN_DEBUG) { | |
2604 | (*result) -> data.log.priority = log_priority_debug; | |
2605 | } else if (token == INFO) { | |
2606 | (*result) -> data.log.priority = log_priority_info; | |
2607 | } else { | |
2608 | (*result) -> data.log.priority = log_priority_debug; | |
2609 | i = 0; | |
2610 | } | |
2611 | if (i) { | |
dc9d7b08 | 2612 | skip_token(&val, (unsigned *)0, cfile); |
b3519f23 | 2613 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2614 | if (token != COMMA) { |
2615 | parse_warn (cfile, "comma expected."); | |
2616 | skip_to_semi (cfile); | |
2617 | *lose = 1; | |
2618 | return 0; | |
2619 | } | |
2620 | } | |
2621 | ||
2622 | if (!(parse_data_expression | |
2623 | (&(*result) -> data.log.expr, cfile, lose))) { | |
2624 | skip_to_semi (cfile); | |
2625 | *lose = 1; | |
2626 | return 0; | |
2627 | } | |
2628 | ||
b3519f23 | 2629 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2630 | if (token != RPAREN) { |
2631 | parse_warn (cfile, "right parenthesis expected."); | |
2632 | skip_to_semi (cfile); | |
2633 | *lose = 1; | |
2634 | return 0; | |
2635 | } | |
2636 | ||
b3519f23 | 2637 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2638 | if (token != SEMI) { |
2639 | parse_warn (cfile, "semicolon expected."); | |
2640 | skip_to_semi (cfile); | |
2641 | *lose = 1; | |
2642 | return 0; | |
2643 | } | |
2644 | break; | |
5e864416 | 2645 | |
45c332f0 SR |
2646 | case PARSE_VENDOR_OPT: |
2647 | /* The parse-vendor-option; The statement has no arguments. | |
2648 | * We simply set up the statement and when it gets executed it | |
2649 | * will find all information it needs in the packet and options. | |
2650 | */ | |
2651 | skip_token(&val, NULL, cfile); | |
2652 | if (!parse_semi(cfile)) { | |
2653 | *lose = 1; | |
2654 | return (0); | |
2655 | } | |
2656 | ||
2657 | if (!executable_statement_allocate(result, MDL)) | |
2658 | log_fatal("no memory for execute statement."); | |
2659 | (*result)->op = vendor_opt_statement; | |
2660 | break; | |
2661 | ||
fa392aea TL |
2662 | /* Not really a statement, but we parse it here anyway |
2663 | because it's appropriate for all DHCP agents with | |
2664 | parsers. */ | |
2665 | case ZONE: | |
dc9d7b08 | 2666 | skip_token(&val, (unsigned *)0, cfile); |
028b1f6a | 2667 | zone = (struct dns_zone *)0; |
fa392aea TL |
2668 | if (!dns_zone_allocate (&zone, MDL)) |
2669 | log_fatal ("no memory for new zone."); | |
2670 | zone -> name = parse_host_name (cfile); | |
2671 | if (!zone -> name) { | |
e7a9c293 | 2672 | parse_warn (cfile, "expecting hostname."); |
98311e4b | 2673 | badzone: |
fa392aea TL |
2674 | *lose = 1; |
2675 | skip_to_semi (cfile); | |
2676 | dns_zone_dereference (&zone, MDL); | |
2677 | return 0; | |
2678 | } | |
88ab5737 TL |
2679 | i = strlen (zone -> name); |
2680 | if (zone -> name [i - 1] != '.') { | |
d758ad8c | 2681 | s = dmalloc ((unsigned)i + 2, MDL); |
98311e4b DH |
2682 | if (!s) { |
2683 | parse_warn (cfile, "no trailing '.' on zone"); | |
d758ad8c | 2684 | goto badzone; |
98311e4b | 2685 | } |
d758ad8c TL |
2686 | strcpy (s, zone -> name); |
2687 | s [i] = '.'; | |
2688 | s [i + 1] = 0; | |
2689 | dfree (zone -> name, MDL); | |
2690 | zone -> name = s; | |
88ab5737 | 2691 | } |
fa392aea TL |
2692 | if (!parse_zone (zone, cfile)) |
2693 | goto badzone; | |
fa392aea | 2694 | status = enter_dns_zone (zone); |
fa392aea | 2695 | if (status != ISC_R_SUCCESS) { |
98311e4b DH |
2696 | parse_warn (cfile, "dns zone key %s: %s", |
2697 | zone -> name, isc_result_totext (status)); | |
fa392aea TL |
2698 | dns_zone_dereference (&zone, MDL); |
2699 | return 0; | |
2700 | } | |
d758ad8c | 2701 | dns_zone_dereference (&zone, MDL); |
fa392aea TL |
2702 | return 1; |
2703 | ||
2704 | /* Also not really a statement, but same idea as above. */ | |
028b1f6a | 2705 | case KEY: |
dc9d7b08 | 2706 | skip_token(&val, (unsigned *)0, cfile); |
028b1f6a | 2707 | if (!parse_key (cfile)) { |
fa392aea | 2708 | *lose = 1; |
fa392aea TL |
2709 | return 0; |
2710 | } | |
028b1f6a | 2711 | return 1; |
e7a9c293 | 2712 | |
be6be08d | 2713 | default: |
588af269 | 2714 | if (config_universe && is_identifier (token)) { |
20916cae | 2715 | option = (struct option *)0; |
f7fdb216 DH |
2716 | option_name_hash_lookup(&option, |
2717 | config_universe->name_hash, | |
2718 | val, 0, MDL); | |
588af269 | 2719 | if (option) { |
dc9d7b08 | 2720 | skip_token(&val, (unsigned *)0, cfile); |
f7fdb216 DH |
2721 | status = parse_option_statement |
2722 | (result, cfile, 1, option, | |
2723 | supersede_option_statement); | |
2724 | option_dereference(&option, MDL); | |
2725 | return status; | |
588af269 TL |
2726 | } |
2727 | } | |
1b234d44 DN |
2728 | |
2729 | if (token == NUMBER_OR_NAME || token == NAME) { | |
2730 | /* This is rather ugly. Since function calls are | |
2731 | data expressions, fake up an eval statement. */ | |
2732 | if (!executable_statement_allocate (result, MDL)) | |
2733 | log_fatal ("no memory for eval statement."); | |
2734 | (*result) -> op = eval_statement; | |
2735 | ||
2736 | if (!parse_expression (&(*result) -> data.eval, | |
2737 | cfile, lose, context_data, | |
2738 | (struct expression **)0, | |
2739 | expr_none)) { | |
2740 | if (!*lose) | |
2741 | parse_warn (cfile, "expecting " | |
2742 | "function call."); | |
2743 | else | |
2744 | *lose = 1; | |
2745 | skip_to_semi (cfile); | |
2746 | executable_statement_dereference (result, MDL); | |
2747 | return 0; | |
2748 | } | |
98311e4b DH |
2749 | if (!parse_semi (cfile)) { |
2750 | *lose = 1; | |
2751 | executable_statement_dereference (result, MDL); | |
2752 | return 0; | |
2753 | } | |
1b234d44 DN |
2754 | break; |
2755 | } | |
2756 | ||
be6be08d | 2757 | *lose = 0; |
79a65726 | 2758 | return 0; |
be6be08d TL |
2759 | } |
2760 | ||
79a65726 TL |
2761 | return 1; |
2762 | } | |
2763 | ||
fa392aea TL |
2764 | /* zone-statements :== zone-statement | |
2765 | zone-statement zone-statements | |
2766 | zone-statement :== | |
2767 | PRIMARY ip-addresses SEMI | | |
2768 | SECONDARY ip-addresses SEMI | | |
d424157d SR |
2769 | PRIMARY6 ip-address6 SEMI | |
2770 | SECONDARY6 ip-address6 SEMI | | |
028b1f6a TL |
2771 | key-reference SEMI |
2772 | ip-addresses :== ip-addr-or-hostname | | |
2773 | ip-addr-or-hostname COMMA ip-addresses | |
2774 | key-reference :== KEY STRING | | |
2775 | KEY identifier */ | |
fa392aea TL |
2776 | |
2777 | int parse_zone (struct dns_zone *zone, struct parse *cfile) | |
2778 | { | |
2779 | int token; | |
2780 | const char *val; | |
630786fc | 2781 | char *key_name; |
fa392aea TL |
2782 | struct option_cache *oc; |
2783 | int done = 0; | |
2784 | ||
b3519f23 | 2785 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2786 | if (token != LBRACE) { |
2787 | parse_warn (cfile, "expecting left brace"); | |
2788 | return 0; | |
2789 | } | |
2790 | ||
fa392aea | 2791 | do { |
b3519f23 | 2792 | token = peek_token (&val, (unsigned *)0, cfile); |
fa392aea TL |
2793 | switch (token) { |
2794 | case PRIMARY: | |
2795 | if (zone -> primary) { | |
2796 | parse_warn (cfile, | |
2797 | "more than one primary."); | |
2798 | skip_to_semi (cfile); | |
2799 | return 0; | |
2800 | } | |
2801 | if (!option_cache_allocate (&zone -> primary, MDL)) | |
2802 | log_fatal ("can't allocate primary option cache."); | |
2803 | oc = zone -> primary; | |
2804 | goto consemup; | |
2805 | ||
2806 | case SECONDARY: | |
2807 | if (zone -> secondary) { | |
2808 | parse_warn (cfile, "more than one secondary."); | |
2809 | skip_to_semi (cfile); | |
2810 | return 0; | |
2811 | } | |
2812 | if (!option_cache_allocate (&zone -> secondary, MDL)) | |
2813 | log_fatal ("can't allocate secondary."); | |
2814 | oc = zone -> secondary; | |
2815 | consemup: | |
dc9d7b08 | 2816 | skip_token(&val, (unsigned *)0, cfile); |
fa392aea TL |
2817 | do { |
2818 | struct expression *expr = (struct expression *)0; | |
2819 | if (!parse_ip_addr_or_hostname (&expr, cfile, 0)) { | |
2820 | parse_warn (cfile, | |
2821 | "expecting IP addr or hostname."); | |
2822 | skip_to_semi (cfile); | |
2823 | return 0; | |
2824 | } | |
2825 | if (oc -> expression) { | |
2826 | struct expression *old = | |
2827 | (struct expression *)0; | |
2828 | expression_reference (&old, | |
2829 | oc -> expression, | |
2830 | MDL); | |
2831 | expression_dereference (&oc -> expression, | |
2832 | MDL); | |
2833 | if (!make_concat (&oc -> expression, | |
2834 | old, expr)) | |
2835 | log_fatal ("no memory for concat."); | |
2836 | expression_dereference (&expr, MDL); | |
2837 | expression_dereference (&old, MDL); | |
2838 | } else { | |
2839 | expression_reference (&oc -> expression, | |
2840 | expr, MDL); | |
2841 | expression_dereference (&expr, MDL); | |
2842 | } | |
b3519f23 | 2843 | token = next_token (&val, (unsigned *)0, cfile); |
fa392aea TL |
2844 | } while (token == COMMA); |
2845 | if (token != SEMI) { | |
2846 | parse_warn (cfile, "expecting semicolon."); | |
2847 | skip_to_semi (cfile); | |
2848 | return 0; | |
2849 | } | |
2850 | break; | |
2851 | ||
d424157d SR |
2852 | case PRIMARY6: |
2853 | if (zone->primary6) { | |
2854 | parse_warn(cfile, "more than one primary6."); | |
2855 | skip_to_semi(cfile); | |
2856 | return (0); | |
2857 | } | |
2858 | if (!option_cache_allocate (&zone->primary6, MDL)) | |
2859 | log_fatal("can't allocate primary6 option cache."); | |
2860 | oc = zone->primary6; | |
2861 | goto consemup6; | |
2862 | ||
2863 | case SECONDARY6: | |
2864 | if (zone->secondary6) { | |
2865 | parse_warn(cfile, "more than one secondary6."); | |
2866 | skip_to_semi(cfile); | |
2867 | return (0); | |
2868 | } | |
2869 | if (!option_cache_allocate (&zone->secondary6, MDL)) | |
2870 | log_fatal("can't allocate secondary6 " | |
2871 | "option cache."); | |
2872 | oc = zone->secondary6; | |
2873 | consemup6: | |
dc9d7b08 | 2874 | skip_token(&val, NULL, cfile); |
d424157d SR |
2875 | do { |
2876 | struct expression *expr = NULL; | |
2877 | if (parse_ip6_addr_expr(&expr, cfile) == 0) { | |
2878 | parse_warn(cfile, "expecting IPv6 addr."); | |
2879 | skip_to_semi(cfile); | |
2880 | return (0); | |
2881 | } | |
2882 | if (oc->expression) { | |
2883 | struct expression *old = NULL; | |
2884 | expression_reference(&old, oc->expression, | |
2885 | MDL); | |
2886 | expression_dereference(&oc->expression, | |
2887 | MDL); | |
2888 | if (!make_concat(&oc->expression, | |
2889 | old, expr)) | |
2890 | log_fatal("no memory for concat."); | |
2891 | expression_dereference(&expr, MDL); | |
2892 | expression_dereference(&old, MDL); | |
2893 | } else { | |
2894 | expression_reference(&oc->expression, | |
2895 | expr, MDL); | |
2896 | expression_dereference(&expr, MDL); | |
2897 | } | |
2898 | token = next_token(&val, NULL, cfile); | |
2899 | } while (token == COMMA); | |
2900 | if (token != SEMI) { | |
2901 | parse_warn(cfile, "expecting semicolon."); | |
2902 | skip_to_semi(cfile); | |
2903 | return (0); | |
2904 | } | |
2905 | break; | |
2906 | ||
028b1f6a | 2907 | case KEY: |
db3f7799 SR |
2908 | skip_token(&val, NULL, cfile); |
2909 | token = peek_token(&val, NULL, cfile); | |
630786fc | 2910 | if (token == STRING) { |
db3f7799 SR |
2911 | skip_token(&val, NULL, cfile); |
2912 | key_name = NULL; | |
630786fc | 2913 | } else { |
db3f7799 | 2914 | key_name = parse_host_name(cfile); |
b49c02cc | 2915 | if (!key_name) { |
db3f7799 SR |
2916 | parse_warn(cfile, "expecting key name."); |
2917 | skip_to_semi(cfile); | |
2918 | return (0); | |
b49c02cc | 2919 | } |
630786fc | 2920 | val = key_name; |
fa392aea | 2921 | } |
db3f7799 SR |
2922 | if (zone->key) { |
2923 | log_fatal("Multiple key definitions for zone %s.", | |
2924 | zone->name); | |
2925 | } | |
2926 | if (omapi_auth_key_lookup_name(&zone->key, val) != | |
49146f3c | 2927 | ISC_R_SUCCESS) |
db3f7799 | 2928 | parse_warn(cfile, "unknown key %s", val); |
630786fc | 2929 | if (key_name) |
db3f7799 SR |
2930 | dfree(key_name, MDL); |
2931 | if (!parse_semi(cfile)) | |
2932 | return (0); | |
fa392aea TL |
2933 | break; |
2934 | ||
2935 | default: | |
2936 | done = 1; | |
2937 | break; | |
2938 | } | |
2939 | } while (!done); | |
2940 | ||
db3f7799 | 2941 | token = next_token(&val, NULL, cfile); |
028b1f6a | 2942 | if (token != RBRACE) { |
db3f7799 SR |
2943 | parse_warn(cfile, "expecting right brace."); |
2944 | return (0); | |
028b1f6a | 2945 | } |
db3f7799 | 2946 | return (1); |
fa392aea TL |
2947 | } |
2948 | ||
028b1f6a TL |
2949 | /* key-statements :== key-statement | |
2950 | key-statement key-statements | |
2951 | key-statement :== | |
2952 | ALGORITHM host-name SEMI | | |
2953 | secret-definition SEMI | |
2954 | secret-definition :== SECRET base64val | | |
2955 | SECRET STRING */ | |
2956 | ||
2957 | int parse_key (struct parse *cfile) | |
2958 | { | |
2959 | int token; | |
2960 | const char *val; | |
2961 | int done = 0; | |
49146f3c DN |
2962 | struct auth_key *key; |
2963 | struct data_string ds; | |
028b1f6a | 2964 | isc_result_t status; |
2f98b84e | 2965 | char *s; |
028b1f6a | 2966 | |
49146f3c DN |
2967 | key = (struct auth_key *)0; |
2968 | if (omapi_auth_key_new (&key, MDL) != ISC_R_SUCCESS) | |
630786fc TL |
2969 | log_fatal ("no memory for key"); |
2970 | ||
b3519f23 | 2971 | token = peek_token (&val, (unsigned *)0, cfile); |
630786fc | 2972 | if (token == STRING) { |
dc9d7b08 | 2973 | skip_token(&val, (unsigned *)0, cfile); |
630786fc TL |
2974 | key -> name = dmalloc (strlen (val) + 1, MDL); |
2975 | if (!key -> name) | |
2976 | log_fatal ("no memory for key name."); | |
2977 | strcpy (key -> name, val); | |
2978 | ||
2979 | } else { | |
2980 | key -> name = parse_host_name (cfile); | |
2981 | if (!key -> name) { | |
b49c02cc | 2982 | parse_warn (cfile, "expecting key name."); |
630786fc TL |
2983 | skip_to_semi (cfile); |
2984 | goto bad; | |
2985 | } | |
2986 | } | |
028b1f6a | 2987 | |
b3519f23 | 2988 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2989 | if (token != LBRACE) { |
2990 | parse_warn (cfile, "expecting left brace"); | |
630786fc | 2991 | goto bad; |
028b1f6a TL |
2992 | } |
2993 | ||
2994 | do { | |
b3519f23 | 2995 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2996 | switch (token) { |
2997 | case ALGORITHM: | |
2998 | if (key -> algorithm) { | |
2999 | parse_warn (cfile, | |
3000 | "key %s: too many algorithms", | |
3001 | key -> name); | |
3002 | goto rbad; | |
3003 | } | |
3004 | key -> algorithm = parse_host_name (cfile); | |
3005 | if (!key -> algorithm) { | |
3006 | parse_warn (cfile, | |
3007 | "expecting key algorithm name."); | |
3008 | goto rbad; | |
3009 | } | |
3010 | if (!parse_semi (cfile)) | |
3011 | goto rbad; | |
2f98b84e TL |
3012 | /* If the algorithm name isn't an FQDN, tack on |
3013 | the .SIG-ALG.REG.NET. domain. */ | |
35155613 | 3014 | s = strrchr (key -> algorithm, '.'); |
2f98b84e | 3015 | if (!s) { |
35155613 TL |
3016 | static char add [] = ".SIG-ALG.REG.INT."; |
3017 | s = dmalloc (strlen (key -> algorithm) + | |
3018 | sizeof (add), MDL); | |
3019 | if (!s) { | |
3020 | log_error ("no memory for key %s.", | |
3021 | "algorithm"); | |
3022 | goto rbad; | |
3023 | } | |
3024 | strcpy (s, key -> algorithm); | |
3025 | strcat (s, add); | |
3026 | dfree (key -> algorithm, MDL); | |
3027 | key -> algorithm = s; | |
3028 | } else if (s [1]) { | |
3029 | /* If there is no trailing '.', hack one in. */ | |
3030 | s = dmalloc (strlen (key -> algorithm) + 2, MDL); | |
3031 | if (!s) { | |
3032 | log_error ("no memory for key %s.", | |
3033 | key -> algorithm); | |
3034 | goto rbad; | |
3035 | } | |
3036 | strcpy (s, key -> algorithm); | |
3037 | strcat (s, "."); | |
3038 | dfree (key -> algorithm, MDL); | |
3039 | key -> algorithm = s; | |
2f98b84e | 3040 | } |
028b1f6a TL |
3041 | break; |
3042 | ||
3043 | case SECRET: | |
49146f3c | 3044 | if (key -> key) { |
028b1f6a TL |
3045 | parse_warn (cfile, "key %s: too many secrets", |
3046 | key -> name); | |
3047 | goto rbad; | |
3048 | } | |
49146f3c DN |
3049 | |
3050 | memset (&ds, 0, sizeof(ds)); | |
3051 | if (!parse_base64 (&ds, cfile)) | |
3052 | goto rbad; | |
3053 | status = omapi_data_string_new (&key -> key, ds.len, | |
3054 | MDL); | |
3055 | if (status != ISC_R_SUCCESS) | |
028b1f6a | 3056 | goto rbad; |
49146f3c DN |
3057 | memcpy (key -> key -> value, |
3058 | ds.buffer -> data, ds.len); | |
3059 | data_string_forget (&ds, MDL); | |
3060 | ||
028b1f6a TL |
3061 | if (!parse_semi (cfile)) |
3062 | goto rbad; | |
3063 | break; | |
3064 | ||
3065 | default: | |
3066 | done = 1; | |
3067 | break; | |
3068 | } | |
3069 | } while (!done); | |
3070 | if (token != RBRACE) { | |
3071 | parse_warn (cfile, "expecting right brace."); | |
3072 | goto rbad; | |
3073 | } | |
13b0934e TL |
3074 | /* Allow the BIND 8 syntax, which has a semicolon after each |
3075 | closing brace. */ | |
b3519f23 | 3076 | token = peek_token (&val, (unsigned *)0, cfile); |
dc9d7b08 MA |
3077 | if (token == SEMI) { |
3078 | skip_token(&val, (unsigned *)0, cfile); | |
3079 | } | |
13b0934e TL |
3080 | |
3081 | /* Remember the key. */ | |
49146f3c | 3082 | status = omapi_auth_key_enter (key); |
028b1f6a TL |
3083 | if (status != ISC_R_SUCCESS) { |
3084 | parse_warn (cfile, "tsig key %s: %s", | |
3085 | key -> name, isc_result_totext (status)); | |
3086 | goto bad; | |
3087 | } | |
d758ad8c | 3088 | omapi_auth_key_dereference (&key, MDL); |
028b1f6a TL |
3089 | return 1; |
3090 | ||
3091 | rbad: | |
3092 | skip_to_rbrace (cfile, 1); | |
3093 | bad: | |
49146f3c | 3094 | omapi_auth_key_dereference (&key, MDL); |
028b1f6a TL |
3095 | return 0; |
3096 | } | |
630786fc | 3097 | |
79a65726 | 3098 | /* |
f579f39f TL |
3099 | * on-statement :== event-types LBRACE executable-statements RBRACE |
3100 | * event-types :== event-type OR event-types | | |
3101 | * event-type | |
79a65726 TL |
3102 | * event-type :== EXPIRY | COMMIT | RELEASE |
3103 | */ | |
3104 | ||
3105 | int parse_on_statement (result, cfile, lose) | |
3106 | struct executable_statement **result; | |
4615d498 | 3107 | struct parse *cfile; |
79a65726 TL |
3108 | int *lose; |
3109 | { | |
3110 | enum dhcp_token token; | |
b1b7b521 | 3111 | const char *val; |
79a65726 | 3112 | |
4bd8800e | 3113 | if (!executable_statement_allocate (result, MDL)) |
8ae2d595 | 3114 | log_fatal ("no memory for new statement."); |
33500c7d | 3115 | (*result) -> op = on_statement; |
79a65726 | 3116 | |
f579f39f | 3117 | do { |
b3519f23 | 3118 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3119 | switch (token) { |
3120 | case EXPIRY: | |
3121 | (*result) -> data.on.evtypes |= ON_EXPIRY; | |
3122 | break; | |
79a65726 | 3123 | |
f579f39f | 3124 | case COMMIT: |
fdac15d9 | 3125 | (*result) -> data.on.evtypes |= ON_COMMIT; |
f579f39f TL |
3126 | break; |
3127 | ||
3128 | case RELEASE: | |
fdac15d9 | 3129 | (*result) -> data.on.evtypes |= ON_RELEASE; |
f579f39f TL |
3130 | break; |
3131 | ||
b49c02cc TL |
3132 | case TRANSMISSION: |
3133 | (*result) -> data.on.evtypes |= ON_TRANSMISSION; | |
3134 | break; | |
3135 | ||
f579f39f TL |
3136 | default: |
3137 | parse_warn (cfile, "expecting a lease event type"); | |
3138 | skip_to_semi (cfile); | |
3139 | *lose = 1; | |
4bd8800e | 3140 | executable_statement_dereference (result, MDL); |
fdac15d9 | 3141 | return 0; |
f579f39f | 3142 | } |
b3519f23 | 3143 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f | 3144 | } while (token == OR); |
79a65726 | 3145 | |
f579f39f TL |
3146 | /* Semicolon means no statements. */ |
3147 | if (token == SEMI) | |
3148 | return 1; | |
3149 | ||
79a65726 | 3150 | if (token != LBRACE) { |
4615d498 | 3151 | parse_warn (cfile, "left brace expected."); |
79a65726 TL |
3152 | skip_to_semi (cfile); |
3153 | *lose = 1; | |
4bd8800e | 3154 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3155 | return 0; |
3156 | } | |
3157 | if (!parse_executable_statements (&(*result) -> data.on.statements, | |
f579f39f | 3158 | cfile, lose, context_any)) { |
79a65726 TL |
3159 | if (*lose) { |
3160 | /* Try to even things up. */ | |
3161 | do { | |
b3519f23 TL |
3162 | token = next_token (&val, |
3163 | (unsigned *)0, cfile); | |
0b69dcc8 | 3164 | } while (token != END_OF_FILE && token != RBRACE); |
4bd8800e | 3165 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3166 | return 0; |
3167 | } | |
3168 | } | |
b3519f23 | 3169 | token = next_token (&val, (unsigned *)0, cfile); |
79a65726 | 3170 | if (token != RBRACE) { |
4615d498 | 3171 | parse_warn (cfile, "right brace expected."); |
79a65726 TL |
3172 | skip_to_semi (cfile); |
3173 | *lose = 1; | |
4bd8800e | 3174 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3175 | return 0; |
3176 | } | |
3177 | return 1; | |
be6be08d TL |
3178 | } |
3179 | ||
f579f39f TL |
3180 | /* |
3181 | * switch-statement :== LPAREN expr RPAREN LBRACE executable-statements RBRACE | |
3182 | * | |
3183 | */ | |
3184 | ||
3185 | int parse_switch_statement (result, cfile, lose) | |
3186 | struct executable_statement **result; | |
3187 | struct parse *cfile; | |
3188 | int *lose; | |
3189 | { | |
3190 | enum dhcp_token token; | |
3191 | const char *val; | |
3192 | ||
4bd8800e | 3193 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
3194 | log_fatal ("no memory for new statement."); |
3195 | (*result) -> op = switch_statement; | |
3196 | ||
b3519f23 | 3197 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3198 | if (token != LPAREN) { |
3199 | parse_warn (cfile, "expecting left brace."); | |
3200 | pfui: | |
3201 | *lose = 1; | |
3202 | skip_to_semi (cfile); | |
3203 | gnorf: | |
4bd8800e | 3204 | executable_statement_dereference (result, MDL); |
f579f39f TL |
3205 | return 0; |
3206 | } | |
3207 | ||
3208 | if (!parse_expression (&(*result) -> data.s_switch.expr, | |
3209 | cfile, lose, context_data_or_numeric, | |
3210 | (struct expression **)0, expr_none)) { | |
3211 | if (!*lose) { | |
3212 | parse_warn (cfile, | |
3213 | "expecting data or numeric expression."); | |
3214 | goto pfui; | |
3215 | } | |
3216 | goto gnorf; | |
3217 | } | |
3218 | ||
b3519f23 | 3219 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3220 | if (token != RPAREN) { |
3221 | parse_warn (cfile, "right paren expected."); | |
3222 | goto pfui; | |
3223 | } | |
3224 | ||
b3519f23 | 3225 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3226 | if (token != LBRACE) { |
3227 | parse_warn (cfile, "left brace expected."); | |
3228 | goto pfui; | |
3229 | } | |
3230 | if (!(parse_executable_statements | |
3231 | (&(*result) -> data.s_switch.statements, cfile, lose, | |
3232 | (is_data_expression ((*result) -> data.s_switch.expr) | |
3233 | ? context_data : context_numeric)))) { | |
3234 | if (*lose) { | |
3235 | skip_to_rbrace (cfile, 1); | |
4bd8800e | 3236 | executable_statement_dereference (result, MDL); |
f579f39f TL |
3237 | return 0; |
3238 | } | |
3239 | } | |
b3519f23 | 3240 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3241 | if (token != RBRACE) { |
3242 | parse_warn (cfile, "right brace expected."); | |
3243 | goto pfui; | |
3244 | } | |
3245 | return 1; | |
3246 | } | |
3247 | ||
3248 | /* | |
3249 | * case-statement :== CASE expr COLON | |
3250 | * | |
3251 | */ | |
3252 | ||
3253 | int parse_case_statement (result, cfile, lose, case_context) | |
3254 | struct executable_statement **result; | |
3255 | struct parse *cfile; | |
3256 | int *lose; | |
3257 | enum expression_context case_context; | |
3258 | { | |
3259 | enum dhcp_token token; | |
3260 | const char *val; | |
3261 | ||
4bd8800e | 3262 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
3263 | log_fatal ("no memory for new statement."); |
3264 | (*result) -> op = case_statement; | |
3265 | ||
3266 | if (!parse_expression (&(*result) -> data.c_case, | |
3267 | cfile, lose, case_context, | |
3268 | (struct expression **)0, expr_none)) | |
3269 | { | |
3270 | if (!*lose) { | |
3271 | parse_warn (cfile, "expecting %s expression.", | |
3272 | (case_context == context_data | |
3273 | ? "data" : "numeric")); | |
3274 | } | |
3275 | pfui: | |
3276 | *lose = 1; | |
3277 | skip_to_semi (cfile); | |
4bd8800e | 3278 | executable_statement_dereference (result, MDL); |
f579f39f TL |
3279 | return 0; |
3280 | } | |
3281 | ||
b3519f23 | 3282 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3283 | if (token != COLON) { |
3284 | parse_warn (cfile, "colon expected."); | |
3285 | goto pfui; | |
3286 | } | |
3287 | return 1; | |
3288 | } | |
3289 | ||
be6be08d TL |
3290 | /* |
3291 | * if-statement :== boolean-expression LBRACE executable-statements RBRACE | |
3292 | * else-statement | |
3293 | * | |
3294 | * else-statement :== <null> | | |
3295 | * ELSE LBRACE executable-statements RBRACE | | |
3296 | * ELSE IF if-statement | | |
3297 | * ELSIF if-statement | |
3298 | */ | |
3299 | ||
79a65726 TL |
3300 | int parse_if_statement (result, cfile, lose) |
3301 | struct executable_statement **result; | |
4615d498 | 3302 | struct parse *cfile; |
be6be08d TL |
3303 | int *lose; |
3304 | { | |
02a015fb | 3305 | enum dhcp_token token; |
b1b7b521 | 3306 | const char *val; |
fdac15d9 | 3307 | int parenp; |
be6be08d | 3308 | |
4bd8800e | 3309 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
3310 | log_fatal ("no memory for if statement."); |
3311 | ||
3312 | (*result) -> op = if_statement; | |
3313 | ||
b3519f23 | 3314 | token = peek_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3315 | if (token == LPAREN) { |
3316 | parenp = 1; | |
dc9d7b08 | 3317 | skip_token(&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3318 | } else |
3319 | parenp = 0; | |
3320 | ||
3321 | ||
79a65726 TL |
3322 | if (!parse_boolean_expression (&(*result) -> data.ie.expr, |
3323 | cfile, lose)) { | |
be6be08d | 3324 | if (!*lose) |
4615d498 | 3325 | parse_warn (cfile, "boolean expression expected."); |
4bd8800e | 3326 | executable_statement_dereference (result, MDL); |
166e63eb | 3327 | *lose = 1; |
79a65726 | 3328 | return 0; |
be6be08d | 3329 | } |
02a015fb | 3330 | #if defined (DEBUG_EXPRESSION_PARSE) |
7b01f134 | 3331 | print_expression ("if condition", (*result) -> data.ie.expr); |
02a015fb | 3332 | #endif |
fdac15d9 | 3333 | if (parenp) { |
b3519f23 | 3334 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3335 | if (token != RPAREN) { |
3336 | parse_warn (cfile, "expecting right paren."); | |
3337 | *lose = 1; | |
4bd8800e | 3338 | executable_statement_dereference (result, MDL); |
fdac15d9 TL |
3339 | return 0; |
3340 | } | |
3341 | } | |
b3519f23 | 3342 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 3343 | if (token != LBRACE) { |
4615d498 | 3344 | parse_warn (cfile, "left brace expected."); |
be6be08d TL |
3345 | skip_to_semi (cfile); |
3346 | *lose = 1; | |
4bd8800e | 3347 | executable_statement_dereference (result, MDL); |
79a65726 | 3348 | return 0; |
be6be08d | 3349 | } |
d758ad8c | 3350 | if (!parse_executable_statements (&(*result) -> data.ie.tc, |
f579f39f | 3351 | cfile, lose, context_any)) { |
79a65726 TL |
3352 | if (*lose) { |
3353 | /* Try to even things up. */ | |
3354 | do { | |
b3519f23 TL |
3355 | token = next_token (&val, |
3356 | (unsigned *)0, cfile); | |
0b69dcc8 | 3357 | } while (token != END_OF_FILE && token != RBRACE); |
4bd8800e | 3358 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3359 | return 0; |
3360 | } | |
efc79acb | 3361 | } |
b3519f23 | 3362 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 3363 | if (token != RBRACE) { |
4615d498 | 3364 | parse_warn (cfile, "right brace expected."); |
be6be08d TL |
3365 | skip_to_semi (cfile); |
3366 | *lose = 1; | |
4bd8800e | 3367 | executable_statement_dereference (result, MDL); |
79a65726 | 3368 | return 0; |
be6be08d | 3369 | } |
b3519f23 | 3370 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d | 3371 | if (token == ELSE) { |
dc9d7b08 | 3372 | skip_token(&val, (unsigned *)0, cfile); |
b3519f23 | 3373 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d | 3374 | if (token == IF) { |
dc9d7b08 | 3375 | skip_token(&val, (unsigned *)0, cfile); |
d758ad8c | 3376 | if (!parse_if_statement (&(*result) -> data.ie.fc, |
79a65726 | 3377 | cfile, lose)) { |
166e63eb TL |
3378 | if (!*lose) |
3379 | parse_warn (cfile, | |
4bd8800e TL |
3380 | "expecting if statement"); |
3381 | executable_statement_dereference (result, MDL); | |
166e63eb TL |
3382 | *lose = 1; |
3383 | return 0; | |
79a65726 | 3384 | } |
be6be08d | 3385 | } else if (token != LBRACE) { |
4615d498 | 3386 | parse_warn (cfile, "left brace or if expected."); |
be6be08d TL |
3387 | skip_to_semi (cfile); |
3388 | *lose = 1; | |
4bd8800e | 3389 | executable_statement_dereference (result, MDL); |
79a65726 | 3390 | return 0; |
be6be08d | 3391 | } else { |
dc9d7b08 | 3392 | skip_token(&val, (unsigned *)0, cfile); |
33500c7d | 3393 | if (!(parse_executable_statements |
d758ad8c | 3394 | (&(*result) -> data.ie.fc, |
f579f39f | 3395 | cfile, lose, context_any))) { |
4bd8800e | 3396 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3397 | return 0; |
3398 | } | |
b3519f23 | 3399 | token = next_token (&val, (unsigned *)0, cfile); |
25541f2f | 3400 | if (token != RBRACE) { |
4615d498 | 3401 | parse_warn (cfile, "right brace expected."); |
25541f2f TL |
3402 | skip_to_semi (cfile); |
3403 | *lose = 1; | |
4bd8800e | 3404 | executable_statement_dereference (result, MDL); |
79a65726 | 3405 | return 0; |
25541f2f | 3406 | } |
be6be08d TL |
3407 | } |
3408 | } else if (token == ELSIF) { | |
dc9d7b08 | 3409 | skip_token(&val, (unsigned *)0, cfile); |
d758ad8c | 3410 | if (!parse_if_statement (&(*result) -> data.ie.fc, |
79a65726 | 3411 | cfile, lose)) { |
166e63eb TL |
3412 | if (!*lose) |
3413 | parse_warn (cfile, | |
3414 | "expecting conditional."); | |
4bd8800e | 3415 | executable_statement_dereference (result, MDL); |
166e63eb TL |
3416 | *lose = 1; |
3417 | return 0; | |
79a65726 | 3418 | } |
be6be08d | 3419 | } else |
d758ad8c | 3420 | (*result) -> data.ie.fc = (struct executable_statement *)0; |
be6be08d | 3421 | |
79a65726 | 3422 | return 1; |
be6be08d TL |
3423 | } |
3424 | ||
3425 | /* | |
3426 | * boolean_expression :== CHECK STRING | | |
3427 | * NOT boolean-expression | | |
3428 | * data-expression EQUAL data-expression | | |
2b965a44 | 3429 | * data-expression BANG EQUAL data-expression | |
dd328225 | 3430 | * data-expression REGEX_MATCH data-expression | |
be6be08d TL |
3431 | * boolean-expression AND boolean-expression | |
3432 | * boolean-expression OR boolean-expression | |
02a015fb | 3433 | * EXISTS OPTION-NAME |
be6be08d TL |
3434 | */ |
3435 | ||
02a015fb TL |
3436 | int parse_boolean_expression (expr, cfile, lose) |
3437 | struct expression **expr; | |
4615d498 | 3438 | struct parse *cfile; |
02a015fb TL |
3439 | int *lose; |
3440 | { | |
3441 | /* Parse an expression... */ | |
3442 | if (!parse_expression (expr, cfile, lose, context_boolean, | |
3443 | (struct expression **)0, expr_none)) | |
3444 | return 0; | |
3445 | ||
08514fb8 TL |
3446 | if (!is_boolean_expression (*expr) && |
3447 | (*expr) -> op != expr_variable_reference && | |
3448 | (*expr) -> op != expr_funcall) { | |
4615d498 | 3449 | parse_warn (cfile, "Expecting a boolean expression."); |
02a015fb | 3450 | *lose = 1; |
4bd8800e | 3451 | expression_dereference (expr, MDL); |
02a015fb TL |
3452 | return 0; |
3453 | } | |
3454 | return 1; | |
3455 | } | |
3456 | ||
d15aa964 TM |
3457 | /* boolean :== ON SEMI | OFF SEMI | TRUE SEMI | FALSE SEMI */ |
3458 | ||
3459 | int parse_boolean (cfile) | |
3460 | struct parse *cfile; | |
3461 | { | |
d15aa964 TM |
3462 | const char *val; |
3463 | int rv; | |
3464 | ||
dd9237c3 | 3465 | (void)next_token(&val, NULL, cfile); |
d15aa964 TM |
3466 | if (!strcasecmp (val, "true") |
3467 | || !strcasecmp (val, "on")) | |
3468 | rv = 1; | |
3469 | else if (!strcasecmp (val, "false") | |
3470 | || !strcasecmp (val, "off")) | |
3471 | rv = 0; | |
3472 | else { | |
3473 | parse_warn (cfile, | |
3474 | "boolean value (true/false/on/off) expected"); | |
3475 | skip_to_semi (cfile); | |
3476 | return 0; | |
3477 | } | |
3478 | parse_semi (cfile); | |
3479 | return rv; | |
3480 | } | |
3481 | ||
3482 | ||
02a015fb TL |
3483 | /* |
3484 | * data_expression :== SUBSTRING LPAREN data-expression COMMA | |
3485 | * numeric-expression COMMA | |
3486 | * numeric-expression RPAREN | | |
a82abfc7 | 3487 | * CONCAT LPAREN data-expression COMMA |
2727c1cf | 3488 | * data-expression RPAREN |
02a015fb | 3489 | * SUFFIX LPAREN data_expression COMMA |
a82abfc7 | 3490 | * numeric-expression RPAREN | |
2727c1cf DH |
3491 | * LCASE LPAREN data_expression RPAREN | |
3492 | * UCASE LPAREN data_expression RPAREN | | |
02a015fb TL |
3493 | * OPTION option_name | |
3494 | * HARDWARE | | |
3495 | * PACKET LPAREN numeric-expression COMMA | |
3496 | * numeric-expression RPAREN | | |
619304cd SR |
3497 | * V6RELAY LPAREN numeric-expression COMMA |
3498 | * data-expression RPAREN | | |
02a015fb | 3499 | * STRING | |
c57db45c | 3500 | * colon_separated_hex_list |
02a015fb TL |
3501 | */ |
3502 | ||
3503 | int parse_data_expression (expr, cfile, lose) | |
3504 | struct expression **expr; | |
4615d498 | 3505 | struct parse *cfile; |
02a015fb TL |
3506 | int *lose; |
3507 | { | |
3508 | /* Parse an expression... */ | |
3509 | if (!parse_expression (expr, cfile, lose, context_data, | |
3510 | (struct expression **)0, expr_none)) | |
3511 | return 0; | |
3512 | ||
08514fb8 TL |
3513 | if (!is_data_expression (*expr) && |
3514 | (*expr) -> op != expr_variable_reference && | |
3515 | (*expr) -> op != expr_funcall) { | |
98311e4b | 3516 | expression_dereference (expr, MDL); |
4615d498 | 3517 | parse_warn (cfile, "Expecting a data expression."); |
02a015fb TL |
3518 | *lose = 1; |
3519 | return 0; | |
3520 | } | |
3521 | return 1; | |
3522 | } | |
3523 | ||
3524 | /* | |
3525 | * numeric-expression :== EXTRACT_INT LPAREN data-expression | |
3526 | * COMMA number RPAREN | | |
3527 | * NUMBER | |
3528 | */ | |
3529 | ||
3530 | int parse_numeric_expression (expr, cfile, lose) | |
3531 | struct expression **expr; | |
4615d498 | 3532 | struct parse *cfile; |
02a015fb TL |
3533 | int *lose; |
3534 | { | |
3535 | /* Parse an expression... */ | |
3536 | if (!parse_expression (expr, cfile, lose, context_numeric, | |
3537 | (struct expression **)0, expr_none)) | |
3538 | return 0; | |
3539 | ||
08514fb8 TL |
3540 | if (!is_numeric_expression (*expr) && |
3541 | (*expr) -> op != expr_variable_reference && | |
3542 | (*expr) -> op != expr_funcall) { | |
98311e4b | 3543 | expression_dereference (expr, MDL); |
4615d498 | 3544 | parse_warn (cfile, "Expecting a numeric expression."); |
02a015fb TL |
3545 | *lose = 1; |
3546 | return 0; | |
3547 | } | |
3548 | return 1; | |
3549 | } | |
9fb2fb28 | 3550 | |
02a015fb | 3551 | /* Parse a subexpression that does not contain a binary operator. */ |
be6be08d | 3552 | |
02a015fb TL |
3553 | int parse_non_binary (expr, cfile, lose, context) |
3554 | struct expression **expr; | |
4615d498 | 3555 | struct parse *cfile; |
be6be08d | 3556 | int *lose; |
02a015fb | 3557 | enum expression_context context; |
be6be08d | 3558 | { |
02a015fb | 3559 | enum dhcp_token token; |
b1b7b521 | 3560 | const char *val; |
be6be08d | 3561 | struct collection *col; |
08514fb8 | 3562 | struct expression *nexp, **ep; |
b1b7b521 | 3563 | int known; |
98bf1607 | 3564 | char *cptr; |
28868515 | 3565 | isc_result_t status; |
b3519f23 | 3566 | unsigned len; |
be6be08d | 3567 | |
b3519f23 | 3568 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3569 | |
3570 | /* Check for unary operators... */ | |
3571 | switch (token) { | |
3572 | case CHECK: | |
dc9d7b08 | 3573 | skip_token(&val, (unsigned *)0, cfile); |
b3519f23 | 3574 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 3575 | if (token != STRING) { |
4615d498 | 3576 | parse_warn (cfile, "string expected."); |
be6be08d TL |
3577 | skip_to_semi (cfile); |
3578 | *lose = 1; | |
02a015fb | 3579 | return 0; |
be6be08d TL |
3580 | } |
3581 | for (col = collections; col; col = col -> next) | |
3582 | if (!strcmp (col -> name, val)) | |
3583 | break; | |
3584 | if (!col) { | |
4615d498 | 3585 | parse_warn (cfile, "unknown collection."); |
be6be08d | 3586 | *lose = 1; |
02a015fb | 3587 | return 0; |
be6be08d | 3588 | } |
4bd8800e | 3589 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3590 | log_fatal ("can't allocate expression"); |
02a015fb TL |
3591 | (*expr) -> op = expr_check; |
3592 | (*expr) -> data.check = col; | |
3593 | break; | |
be6be08d | 3594 | |
5e6fb153 | 3595 | case TOKEN_NOT: |
d7d9c0c7 | 3596 | skip_token(&val, NULL, cfile); |
4bd8800e | 3597 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3598 | log_fatal ("can't allocate expression"); |
d7d9c0c7 SR |
3599 | (*expr)->op = expr_not; |
3600 | if (!parse_non_binary (&(*expr)->data.not, | |
9a7f6fcd | 3601 | cfile, lose, context_boolean)) { |
be6be08d | 3602 | if (!*lose) { |
4615d498 | 3603 | parse_warn (cfile, "expression expected"); |
be6be08d TL |
3604 | skip_to_semi (cfile); |
3605 | } | |
3606 | *lose = 1; | |
4bd8800e | 3607 | expression_dereference (expr, MDL); |
d7d9c0c7 | 3608 | return (0); |
be6be08d | 3609 | } |
9a7f6fcd TL |
3610 | if (!is_boolean_expression ((*expr) -> data.not)) { |
3611 | *lose = 1; | |
3612 | parse_warn (cfile, "boolean expression expected"); | |
3613 | skip_to_semi (cfile); | |
3614 | expression_dereference (expr, MDL); | |
3615 | return 0; | |
3616 | } | |
be6be08d | 3617 | break; |
be6be08d | 3618 | |
fcd9651f | 3619 | case LPAREN: |
dc9d7b08 | 3620 | skip_token(&val, (unsigned *)0, cfile); |
fcd9651f TL |
3621 | if (!parse_expression (expr, cfile, lose, context, |
3622 | (struct expression **)0, expr_none)) { | |
3623 | if (!*lose) { | |
3624 | parse_warn (cfile, "expression expected"); | |
3625 | skip_to_semi (cfile); | |
3626 | } | |
3627 | *lose = 1; | |
3628 | return 0; | |
3629 | } | |
b3519f23 | 3630 | token = next_token (&val, (unsigned *)0, cfile); |
fcd9651f TL |
3631 | if (token != RPAREN) { |
3632 | *lose = 1; | |
3633 | parse_warn (cfile, "right paren expected"); | |
3634 | skip_to_semi (cfile); | |
3635 | return 0; | |
3636 | } | |
3637 | break; | |
3638 | ||
02a015fb | 3639 | case EXISTS: |
d7d9c0c7 | 3640 | skip_token(&val, NULL, cfile); |
4bd8800e | 3641 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3642 | log_fatal ("can't allocate expression"); |
d7d9c0c7 | 3643 | (*expr)->op = expr_exists; |
b1b7b521 | 3644 | known = 0; |
f7fdb216 DH |
3645 | /* Pass reference directly to expression structure. */ |
3646 | status = parse_option_name(cfile, 0, &known, | |
3647 | &(*expr)->data.option); | |
3648 | if (status != ISC_R_SUCCESS || | |
3649 | (*expr)->data.option == NULL) { | |
02a015fb | 3650 | *lose = 1; |
4bd8800e | 3651 | expression_dereference (expr, MDL); |
d7d9c0c7 | 3652 | return (0); |
be6be08d | 3653 | } |
02a015fb | 3654 | break; |
be6be08d | 3655 | |
1c5d5731 | 3656 | case STATIC: |
dc9d7b08 | 3657 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 3658 | if (!expression_allocate (expr, MDL)) |
1c5d5731 TL |
3659 | log_fatal ("can't allocate expression"); |
3660 | (*expr) -> op = expr_static; | |
3661 | break; | |
3662 | ||
70330633 | 3663 | case KNOWN: |
dc9d7b08 | 3664 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 3665 | if (!expression_allocate (expr, MDL)) |
70330633 TL |
3666 | log_fatal ("can't allocate expression"); |
3667 | (*expr) -> op = expr_known; | |
3668 | break; | |
3669 | ||
be6be08d | 3670 | case SUBSTRING: |
dc9d7b08 | 3671 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 3672 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3673 | log_fatal ("can't allocate expression"); |
02a015fb | 3674 | (*expr) -> op = expr_substring; |
be6be08d | 3675 | |
b3519f23 | 3676 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3677 | if (token != LPAREN) { |
3678 | nolparen: | |
4bd8800e | 3679 | expression_dereference (expr, MDL); |
4615d498 | 3680 | parse_warn (cfile, "left parenthesis expected."); |
be6be08d | 3681 | *lose = 1; |
02a015fb | 3682 | return 0; |
be6be08d TL |
3683 | } |
3684 | ||
02a015fb TL |
3685 | if (!parse_data_expression (&(*expr) -> data.substring.expr, |
3686 | cfile, lose)) { | |
be6be08d | 3687 | nodata: |
4bd8800e | 3688 | expression_dereference (expr, MDL); |
962dc4ab TL |
3689 | if (!*lose) { |
3690 | parse_warn (cfile, | |
3691 | "expecting data expression."); | |
3692 | skip_to_semi (cfile); | |
3693 | *lose = 1; | |
3694 | } | |
02a015fb | 3695 | return 0; |
be6be08d TL |
3696 | } |
3697 | ||
b3519f23 | 3698 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3699 | if (token != COMMA) { |
3700 | nocomma: | |
4bd8800e | 3701 | expression_dereference (expr, MDL); |
4615d498 | 3702 | parse_warn (cfile, "comma expected."); |
be6be08d | 3703 | *lose = 1; |
02a015fb TL |
3704 | |
3705 | return 0; | |
be6be08d TL |
3706 | } |
3707 | ||
02a015fb TL |
3708 | if (!parse_numeric_expression |
3709 | (&(*expr) -> data.substring.offset,cfile, lose)) { | |
be6be08d TL |
3710 | nonum: |
3711 | if (!*lose) { | |
4615d498 TL |
3712 | parse_warn (cfile, |
3713 | "expecting numeric expression."); | |
be6be08d TL |
3714 | skip_to_semi (cfile); |
3715 | *lose = 1; | |
3716 | } | |
4bd8800e | 3717 | expression_dereference (expr, MDL); |
02a015fb | 3718 | return 0; |
be6be08d TL |
3719 | } |
3720 | ||
b3519f23 | 3721 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3722 | if (token != COMMA) |
3723 | goto nocomma; | |
3724 | ||
02a015fb TL |
3725 | if (!parse_numeric_expression |
3726 | (&(*expr) -> data.substring.len, cfile, lose)) | |
be6be08d TL |
3727 | goto nonum; |
3728 | ||
b3519f23 | 3729 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3730 | if (token != RPAREN) { |
3731 | norparen: | |
4615d498 | 3732 | parse_warn (cfile, "right parenthesis expected."); |
be6be08d | 3733 | *lose = 1; |
4bd8800e | 3734 | expression_dereference (expr, MDL); |
02a015fb | 3735 | return 0; |
be6be08d | 3736 | } |
02a015fb | 3737 | break; |
be6be08d TL |
3738 | |
3739 | case SUFFIX: | |
dc9d7b08 | 3740 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 3741 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3742 | log_fatal ("can't allocate expression"); |
02a015fb | 3743 | (*expr) -> op = expr_suffix; |
be6be08d | 3744 | |
b3519f23 | 3745 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3746 | if (token != LPAREN) |
3747 | goto nolparen; | |
3748 | ||
02a015fb TL |
3749 | if (!parse_data_expression (&(*expr) -> data.suffix.expr, |
3750 | cfile, lose)) | |
be6be08d TL |
3751 | goto nodata; |
3752 | ||
b3519f23 | 3753 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3754 | if (token != COMMA) |
3755 | goto nocomma; | |
3756 | ||
b0f452b3 TL |
3757 | if (!parse_numeric_expression (&(*expr) -> data.suffix.len, |
3758 | cfile, lose)) | |
be6be08d TL |
3759 | goto nonum; |
3760 | ||
b3519f23 | 3761 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3762 | if (token != RPAREN) |
3763 | goto norparen; | |
02a015fb | 3764 | break; |
be6be08d | 3765 | |
2727c1cf | 3766 | case LCASE: |
dc9d7b08 | 3767 | skip_token(&val, (unsigned *)0, cfile); |
2727c1cf DH |
3768 | if (!expression_allocate(expr, MDL)) |
3769 | log_fatal ("can't allocate expression"); | |
3770 | (*expr)->op = expr_lcase; | |
3771 | ||
3772 | token = next_token(&val, (unsigned *)0, cfile); | |
3773 | if (token != LPAREN) | |
3774 | goto nolparen; | |
3775 | ||
3776 | if (!parse_data_expression(&(*expr)->data.lcase, cfile, lose)) | |
3777 | goto nodata; | |
3778 | ||
3779 | token = next_token(&val, (unsigned *)0, cfile); | |
3780 | if (token != RPAREN) | |
3781 | goto norparen; | |
3782 | break; | |
3783 | ||
3784 | case UCASE: | |
dc9d7b08 | 3785 | skip_token(&val, (unsigned *)0, cfile); |
2727c1cf DH |
3786 | if (!expression_allocate(expr, MDL)) |
3787 | log_fatal ("can't allocate expression"); | |
3788 | (*expr)->op = expr_ucase; | |
3789 | ||
3790 | token = next_token (&val, (unsigned *)0, cfile); | |
3791 | if (token != LPAREN) | |
3792 | goto nolparen; | |
3793 | ||
3794 | if (!parse_data_expression(&(*expr)->data.ucase, | |
3795 | cfile, lose)) | |
3796 | goto nodata; | |
3797 | ||
3798 | token = next_token(&val, (unsigned *)0, cfile); | |
3799 | if (token != RPAREN) | |
3800 | goto norparen; | |
3801 | break; | |
3802 | ||
a82abfc7 | 3803 | case CONCAT: |
dc9d7b08 | 3804 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 3805 | if (!expression_allocate (expr, MDL)) |
a82abfc7 TL |
3806 | log_fatal ("can't allocate expression"); |
3807 | (*expr) -> op = expr_concat; | |
3808 | ||
b3519f23 | 3809 | token = next_token (&val, (unsigned *)0, cfile); |
a82abfc7 TL |
3810 | if (token != LPAREN) |
3811 | goto nolparen; | |
3812 | ||
3813 | if (!parse_data_expression (&(*expr) -> data.concat [0], | |
3814 | cfile, lose)) | |
3815 | goto nodata; | |
3816 | ||
b3519f23 | 3817 | token = next_token (&val, (unsigned *)0, cfile); |
a82abfc7 TL |
3818 | if (token != COMMA) |
3819 | goto nocomma; | |
3820 | ||
720c8262 | 3821 | concat_another: |
a82abfc7 TL |
3822 | if (!parse_data_expression (&(*expr) -> data.concat [1], |
3823 | cfile, lose)) | |
3824 | goto nodata; | |
3825 | ||
b3519f23 | 3826 | token = next_token (&val, (unsigned *)0, cfile); |
720c8262 TL |
3827 | |
3828 | if (token == COMMA) { | |
3829 | nexp = (struct expression *)0; | |
4bd8800e | 3830 | if (!expression_allocate (&nexp, MDL)) |
720c8262 TL |
3831 | log_fatal ("can't allocate at CONCAT2"); |
3832 | nexp -> op = expr_concat; | |
4bd8800e TL |
3833 | expression_reference (&nexp -> data.concat [0], |
3834 | *expr, MDL); | |
3835 | expression_dereference (expr, MDL); | |
3836 | expression_reference (expr, nexp, MDL); | |
d758ad8c | 3837 | expression_dereference (&nexp, MDL); |
720c8262 TL |
3838 | goto concat_another; |
3839 | } | |
3840 | ||
a82abfc7 TL |
3841 | if (token != RPAREN) |
3842 | goto norparen; | |
3843 | break; | |
3844 | ||
da38df14 | 3845 | case BINARY_TO_ASCII: |
dc9d7b08 | 3846 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 3847 | if (!expression_allocate (expr, MDL)) |
da38df14 | 3848 | log_fatal ("can't allocate expression"); |
eb42f00e | 3849 | (*expr) -> op = expr_binary_to_ascii; |
da38df14 | 3850 | |
b3519f23 | 3851 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3852 | if (token != LPAREN) |
3853 | goto nolparen; | |
3854 | ||
3855 | if (!parse_numeric_expression (&(*expr) -> data.b2a.base, | |
3856 | cfile, lose)) | |
3857 | goto nodata; | |
3858 | ||
b3519f23 | 3859 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3860 | if (token != COMMA) |
3861 | goto nocomma; | |
3862 | ||
3863 | if (!parse_numeric_expression (&(*expr) -> data.b2a.width, | |
3864 | cfile, lose)) | |
3865 | goto nodata; | |
3866 | ||
b3519f23 | 3867 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3868 | if (token != COMMA) |
3869 | goto nocomma; | |
3870 | ||
c57db45c | 3871 | if (!parse_data_expression (&(*expr) -> data.b2a.separator, |
da38df14 TL |
3872 | cfile, lose)) |
3873 | goto nodata; | |
3874 | ||
b3519f23 | 3875 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3876 | if (token != COMMA) |
3877 | goto nocomma; | |
3878 | ||
3879 | if (!parse_data_expression (&(*expr) -> data.b2a.buffer, | |
3880 | cfile, lose)) | |
3881 | goto nodata; | |
3882 | ||
b3519f23 | 3883 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3884 | if (token != RPAREN) |
3885 | goto norparen; | |
3886 | break; | |
3887 | ||
3888 | case REVERSE: | |
dc9d7b08 | 3889 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 3890 | if (!expression_allocate (expr, MDL)) |
da38df14 | 3891 | log_fatal ("can't allocate expression"); |
eb42f00e | 3892 | (*expr) -> op = expr_reverse; |
da38df14 | 3893 | |
b3519f23 | 3894 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3895 | if (token != LPAREN) |
3896 | goto nolparen; | |
3897 | ||
3898 | if (!(parse_numeric_expression | |
3899 | (&(*expr) -> data.reverse.width, cfile, lose))) | |
3900 | goto nodata; | |
3901 | ||
b3519f23 | 3902 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3903 | if (token != COMMA) |
3904 | goto nocomma; | |
3905 | ||
3906 | if (!(parse_data_expression | |
3907 | (&(*expr) -> data.reverse.buffer, cfile, lose))) | |
3908 | goto nodata; | |
3909 | ||
b3519f23 | 3910 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3911 | if (token != RPAREN) |
3912 | goto norparen; | |
3913 | break; | |
3914 | ||
fdac15d9 | 3915 | case PICK: |
79a65726 TL |
3916 | /* pick (a, b, c) actually produces an internal representation |
3917 | that looks like pick (a, pick (b, pick (c, nil))). */ | |
dc9d7b08 | 3918 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 3919 | if (!(expression_allocate (expr, MDL))) |
79a65726 | 3920 | log_fatal ("can't allocate expression"); |
79a65726 | 3921 | |
b3519f23 | 3922 | token = next_token (&val, (unsigned *)0, cfile); |
79a65726 TL |
3923 | if (token != LPAREN) |
3924 | goto nolparen; | |
3925 | ||
d758ad8c TL |
3926 | nexp = (struct expression *)0; |
3927 | expression_reference (&nexp, *expr, MDL); | |
79a65726 | 3928 | do { |
d758ad8c TL |
3929 | nexp -> op = expr_pick_first_value; |
3930 | if (!(parse_data_expression | |
3931 | (&nexp -> data.pick_first_value.car, | |
3932 | cfile, lose))) | |
3933 | goto nodata; | |
79a65726 | 3934 | |
d758ad8c TL |
3935 | token = next_token (&val, (unsigned *)0, cfile); |
3936 | if (token == COMMA) { | |
3937 | struct expression *foo = (struct expression *)0; | |
3938 | if (!expression_allocate (&foo, MDL)) | |
3939 | log_fatal ("can't allocate expr"); | |
3940 | expression_reference | |
3941 | (&nexp -> data.pick_first_value.cdr, foo, MDL); | |
3942 | expression_dereference (&nexp, MDL); | |
3943 | expression_reference (&nexp, foo, MDL); | |
3944 | expression_dereference (&foo, MDL); | |
3945 | } | |
79a65726 | 3946 | } while (token == COMMA); |
d758ad8c | 3947 | expression_dereference (&nexp, MDL); |
79a65726 TL |
3948 | |
3949 | if (token != RPAREN) | |
3950 | goto norparen; | |
3951 | break; | |
3952 | ||
3953 | case OPTION: | |
3954 | case CONFIG_OPTION: | |
4bd8800e | 3955 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3956 | log_fatal ("can't allocate expression"); |
cd31814f TL |
3957 | (*expr) -> op = (token == OPTION |
3958 | ? expr_option | |
3959 | : expr_config_option); | |
dc9d7b08 | 3960 | skip_token(&val, (unsigned *)0, cfile); |
b1b7b521 | 3961 | known = 0; |
f7fdb216 DH |
3962 | /* Pass reference directly to expression structure. */ |
3963 | status = parse_option_name(cfile, 0, &known, | |
3964 | &(*expr)->data.option); | |
3965 | if (status != ISC_R_SUCCESS || | |
3966 | (*expr)->data.option == NULL) { | |
be6be08d | 3967 | *lose = 1; |
4bd8800e | 3968 | expression_dereference (expr, MDL); |
02a015fb | 3969 | return 0; |
be6be08d | 3970 | } |
02a015fb | 3971 | break; |
be6be08d TL |
3972 | |
3973 | case HARDWARE: | |
dc9d7b08 | 3974 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 3975 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3976 | log_fatal ("can't allocate expression"); |
02a015fb TL |
3977 | (*expr) -> op = expr_hardware; |
3978 | break; | |
be6be08d | 3979 | |
da38df14 | 3980 | case LEASED_ADDRESS: |
dc9d7b08 | 3981 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 3982 | if (!expression_allocate (expr, MDL)) |
da38df14 TL |
3983 | log_fatal ("can't allocate expression"); |
3984 | (*expr) -> op = expr_leased_address; | |
3985 | break; | |
3986 | ||
9a7f6fcd | 3987 | case CLIENT_STATE: |
dc9d7b08 | 3988 | skip_token(&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
3989 | if (!expression_allocate (expr, MDL)) |
3990 | log_fatal ("can't allocate expression"); | |
3991 | (*expr) -> op = expr_client_state; | |
3992 | break; | |
3993 | ||
fdac15d9 | 3994 | case FILENAME: |
dc9d7b08 | 3995 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 3996 | if (!expression_allocate (expr, MDL)) |
fdac15d9 TL |
3997 | log_fatal ("can't allocate expression"); |
3998 | (*expr) -> op = expr_filename; | |
3999 | break; | |
4000 | ||
4001 | case SERVER_NAME: | |
dc9d7b08 | 4002 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 4003 | if (!expression_allocate (expr, MDL)) |
fdac15d9 TL |
4004 | log_fatal ("can't allocate expression"); |
4005 | (*expr) -> op = expr_sname; | |
4006 | break; | |
4007 | ||
069e9f4c | 4008 | case LEASE_TIME: |
dc9d7b08 | 4009 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 4010 | if (!expression_allocate (expr, MDL)) |
069e9f4c TL |
4011 | log_fatal ("can't allocate expression"); |
4012 | (*expr) -> op = expr_lease_time; | |
4013 | break; | |
4014 | ||
f579f39f | 4015 | case TOKEN_NULL: |
dc9d7b08 | 4016 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 4017 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4018 | log_fatal ("can't allocate expression"); |
4019 | (*expr) -> op = expr_null; | |
4020 | break; | |
4021 | ||
79a65726 | 4022 | case HOST_DECL_NAME: |
dc9d7b08 | 4023 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 4024 | if (!expression_allocate (expr, MDL)) |
79a65726 TL |
4025 | log_fatal ("can't allocate expression"); |
4026 | (*expr) -> op = expr_host_decl_name; | |
4027 | break; | |
4028 | ||
be6be08d | 4029 | case PACKET: |
dc9d7b08 | 4030 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 4031 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4032 | log_fatal ("can't allocate expression"); |
02a015fb | 4033 | (*expr) -> op = expr_packet; |
be6be08d | 4034 | |
b3519f23 | 4035 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4036 | if (token != LPAREN) |
4037 | goto nolparen; | |
4038 | ||
02a015fb TL |
4039 | if (!parse_numeric_expression (&(*expr) -> data.packet.offset, |
4040 | cfile, lose)) | |
be6be08d TL |
4041 | goto nonum; |
4042 | ||
b3519f23 | 4043 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4044 | if (token != COMMA) |
4045 | goto nocomma; | |
4046 | ||
02a015fb TL |
4047 | if (!parse_numeric_expression (&(*expr) -> data.packet.len, |
4048 | cfile, lose)) | |
be6be08d TL |
4049 | goto nonum; |
4050 | ||
b3519f23 | 4051 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4052 | if (token != RPAREN) |
4053 | goto norparen; | |
02a015fb | 4054 | break; |
be6be08d TL |
4055 | |
4056 | case STRING: | |
dc9d7b08 | 4057 | skip_token(&val, &len, cfile); |
b1b7b521 | 4058 | if (!make_const_data (expr, (const unsigned char *)val, |
d758ad8c | 4059 | len, 1, 1, MDL)) |
8ae2d595 | 4060 | log_fatal ("can't make constant string expression."); |
02a015fb | 4061 | break; |
be6be08d | 4062 | |
be6be08d | 4063 | case EXTRACT_INT: |
dc9d7b08 | 4064 | skip_token(&val, (unsigned *)0, cfile); |
b3519f23 | 4065 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4066 | if (token != LPAREN) { |
4615d498 | 4067 | parse_warn (cfile, "left parenthesis expected."); |
be6be08d | 4068 | *lose = 1; |
02a015fb | 4069 | return 0; |
be6be08d TL |
4070 | } |
4071 | ||
4bd8800e | 4072 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4073 | log_fatal ("can't allocate expression"); |
02a015fb TL |
4074 | |
4075 | if (!parse_data_expression (&(*expr) -> data.extract_int, | |
4076 | cfile, lose)) { | |
962dc4ab TL |
4077 | if (!*lose) { |
4078 | parse_warn (cfile, | |
4079 | "expecting data expression."); | |
4080 | skip_to_semi (cfile); | |
4081 | *lose = 1; | |
4082 | } | |
4bd8800e | 4083 | expression_dereference (expr, MDL); |
02a015fb | 4084 | return 0; |
be6be08d TL |
4085 | } |
4086 | ||
b3519f23 | 4087 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4088 | if (token != COMMA) { |
4615d498 | 4089 | parse_warn (cfile, "comma expected."); |
be6be08d | 4090 | *lose = 1; |
4bd8800e | 4091 | expression_dereference (expr, MDL); |
02a015fb | 4092 | return 0; |
be6be08d TL |
4093 | } |
4094 | ||
b3519f23 | 4095 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4096 | if (token != NUMBER) { |
4615d498 | 4097 | parse_warn (cfile, "number expected."); |
be6be08d | 4098 | *lose = 1; |
4bd8800e | 4099 | expression_dereference (expr, MDL); |
02a015fb | 4100 | return 0; |
be6be08d | 4101 | } |
be6be08d TL |
4102 | switch (atoi (val)) { |
4103 | case 8: | |
02a015fb | 4104 | (*expr) -> op = expr_extract_int8; |
be6be08d TL |
4105 | break; |
4106 | ||
4107 | case 16: | |
02a015fb | 4108 | (*expr) -> op = expr_extract_int16; |
be6be08d TL |
4109 | break; |
4110 | ||
4111 | case 32: | |
02a015fb | 4112 | (*expr) -> op = expr_extract_int32; |
be6be08d TL |
4113 | break; |
4114 | ||
4115 | default: | |
4615d498 TL |
4116 | parse_warn (cfile, |
4117 | "unsupported integer size %d", atoi (val)); | |
be6be08d TL |
4118 | *lose = 1; |
4119 | skip_to_semi (cfile); | |
4bd8800e | 4120 | expression_dereference (expr, MDL); |
02a015fb | 4121 | return 0; |
be6be08d TL |
4122 | } |
4123 | ||
b3519f23 | 4124 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4125 | if (token != RPAREN) { |
4615d498 | 4126 | parse_warn (cfile, "right parenthesis expected."); |
be6be08d | 4127 | *lose = 1; |
4bd8800e | 4128 | expression_dereference (expr, MDL); |
02a015fb | 4129 | return 0; |
be6be08d | 4130 | } |
02a015fb | 4131 | break; |
be6be08d | 4132 | |
20c4e94d | 4133 | case ENCODE_INT: |
dc9d7b08 | 4134 | skip_token(&val, (unsigned *)0, cfile); |
b3519f23 | 4135 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4136 | if (token != LPAREN) { |
4615d498 | 4137 | parse_warn (cfile, "left parenthesis expected."); |
20c4e94d TL |
4138 | *lose = 1; |
4139 | return 0; | |
4140 | } | |
4141 | ||
4bd8800e | 4142 | if (!expression_allocate (expr, MDL)) |
20c4e94d TL |
4143 | log_fatal ("can't allocate expression"); |
4144 | ||
4145 | if (!parse_numeric_expression (&(*expr) -> data.encode_int, | |
4146 | cfile, lose)) { | |
4615d498 | 4147 | parse_warn (cfile, "expecting numeric expression."); |
20c4e94d TL |
4148 | skip_to_semi (cfile); |
4149 | *lose = 1; | |
4bd8800e | 4150 | expression_dereference (expr, MDL); |
20c4e94d TL |
4151 | return 0; |
4152 | } | |
4153 | ||
b3519f23 | 4154 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4155 | if (token != COMMA) { |
4615d498 | 4156 | parse_warn (cfile, "comma expected."); |
20c4e94d | 4157 | *lose = 1; |
4bd8800e | 4158 | expression_dereference (expr, MDL); |
20c4e94d TL |
4159 | return 0; |
4160 | } | |
4161 | ||
b3519f23 | 4162 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4163 | if (token != NUMBER) { |
4615d498 | 4164 | parse_warn (cfile, "number expected."); |
20c4e94d | 4165 | *lose = 1; |
4bd8800e | 4166 | expression_dereference (expr, MDL); |
20c4e94d TL |
4167 | return 0; |
4168 | } | |
4169 | switch (atoi (val)) { | |
4170 | case 8: | |
4171 | (*expr) -> op = expr_encode_int8; | |
4172 | break; | |
4173 | ||
4174 | case 16: | |
4175 | (*expr) -> op = expr_encode_int16; | |
4176 | break; | |
4177 | ||
4178 | case 32: | |
4179 | (*expr) -> op = expr_encode_int32; | |
4180 | break; | |
4181 | ||
4182 | default: | |
4615d498 TL |
4183 | parse_warn (cfile, |
4184 | "unsupported integer size %d", atoi (val)); | |
20c4e94d TL |
4185 | *lose = 1; |
4186 | skip_to_semi (cfile); | |
4bd8800e | 4187 | expression_dereference (expr, MDL); |
20c4e94d TL |
4188 | return 0; |
4189 | } | |
4190 | ||
b3519f23 | 4191 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4192 | if (token != RPAREN) { |
4615d498 | 4193 | parse_warn (cfile, "right parenthesis expected."); |
20c4e94d | 4194 | *lose = 1; |
4bd8800e | 4195 | expression_dereference (expr, MDL); |
20c4e94d TL |
4196 | return 0; |
4197 | } | |
4198 | break; | |
4199 | ||
be6be08d | 4200 | case NUMBER: |
02a015fb TL |
4201 | /* If we're in a numeric context, this should just be a |
4202 | number, by itself. */ | |
f579f39f TL |
4203 | if (context == context_numeric || |
4204 | context == context_data_or_numeric) { | |
dc9d7b08 | 4205 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 4206 | if (!expression_allocate (expr, MDL)) |
be19167d | 4207 | log_fatal ("can't allocate expression"); |
02a015fb TL |
4208 | (*expr) -> op = expr_const_int; |
4209 | (*expr) -> data.const_int = atoi (val); | |
4210 | break; | |
4211 | } | |
be6be08d | 4212 | |
02a015fb | 4213 | case NUMBER_OR_NAME: |
4bd8800e | 4214 | if (!expression_allocate (expr, MDL)) |
be19167d TL |
4215 | log_fatal ("can't allocate expression"); |
4216 | ||
02a015fb TL |
4217 | (*expr) -> op = expr_const_data; |
4218 | if (!parse_cshl (&(*expr) -> data.const_data, cfile)) { | |
4bd8800e | 4219 | expression_dereference (expr, MDL); |
02a015fb TL |
4220 | return 0; |
4221 | } | |
4222 | break; | |
4223 | ||
f579f39f TL |
4224 | case NS_FORMERR: |
4225 | known = FORMERR; | |
9a7f6fcd | 4226 | goto ns_const; |
f579f39f | 4227 | ns_const: |
dc9d7b08 | 4228 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 4229 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4230 | log_fatal ("can't allocate expression"); |
4231 | (*expr) -> op = expr_const_int; | |
4232 | (*expr) -> data.const_int = known; | |
4233 | break; | |
4234 | ||
4235 | case NS_NOERROR: | |
1898dcf7 | 4236 | known = ISC_R_SUCCESS; |
f579f39f TL |
4237 | goto ns_const; |
4238 | ||
4239 | case NS_NOTAUTH: | |
98bf1607 | 4240 | known = DHCP_R_NOTAUTH; |
f579f39f TL |
4241 | goto ns_const; |
4242 | ||
4243 | case NS_NOTIMP: | |
1898dcf7 | 4244 | known = ISC_R_NOTIMPLEMENTED; |
f579f39f TL |
4245 | goto ns_const; |
4246 | ||
4247 | case NS_NOTZONE: | |
98bf1607 | 4248 | known = DHCP_R_NOTZONE; |
f579f39f TL |
4249 | goto ns_const; |
4250 | ||
4251 | case NS_NXDOMAIN: | |
98bf1607 | 4252 | known = DHCP_R_NXDOMAIN; |
f579f39f TL |
4253 | goto ns_const; |
4254 | ||
4255 | case NS_NXRRSET: | |
98bf1607 | 4256 | known = DHCP_R_NXRRSET; |
f579f39f TL |
4257 | goto ns_const; |
4258 | ||
4259 | case NS_REFUSED: | |
98bf1607 | 4260 | known = DHCP_R_REFUSED; |
f579f39f TL |
4261 | goto ns_const; |
4262 | ||
4263 | case NS_SERVFAIL: | |
98bf1607 | 4264 | known = DHCP_R_SERVFAIL; |
f579f39f TL |
4265 | goto ns_const; |
4266 | ||
4267 | case NS_YXDOMAIN: | |
98bf1607 | 4268 | known = DHCP_R_YXDOMAIN; |
f579f39f TL |
4269 | goto ns_const; |
4270 | ||
4271 | case NS_YXRRSET: | |
98bf1607 | 4272 | known = DHCP_R_YXRRSET; |
f579f39f TL |
4273 | goto ns_const; |
4274 | ||
8a34e9e6 TL |
4275 | case BOOTING: |
4276 | known = S_INIT; | |
4277 | goto ns_const; | |
4278 | ||
4279 | case REBOOT: | |
4280 | known = S_REBOOTING; | |
4281 | goto ns_const; | |
4282 | ||
4283 | case SELECT: | |
4284 | known = S_SELECTING; | |
4285 | goto ns_const; | |
4286 | ||
543ce4f8 TL |
4287 | case REQUEST: |
4288 | known = S_REQUESTING; | |
4289 | goto ns_const; | |
4290 | ||
8a34e9e6 TL |
4291 | case BOUND: |
4292 | known = S_BOUND; | |
4293 | goto ns_const; | |
4294 | ||
4295 | case RENEW: | |
4296 | known = S_RENEWING; | |
4297 | goto ns_const; | |
4298 | ||
4299 | case REBIND: | |
4300 | known = S_REBINDING; | |
4301 | goto ns_const; | |
4302 | ||
f579f39f | 4303 | case DEFINED: |
dc9d7b08 | 4304 | skip_token(&val, (unsigned *)0, cfile); |
b3519f23 | 4305 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4306 | if (token != LPAREN) |
4307 | goto nolparen; | |
4308 | ||
b3519f23 | 4309 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4310 | if (token != NAME && token != NUMBER_OR_NAME) { |
4311 | parse_warn (cfile, "%s can't be a variable name", val); | |
4312 | skip_to_semi (cfile); | |
4313 | *lose = 1; | |
4314 | return 0; | |
4315 | } | |
4316 | ||
4bd8800e | 4317 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4318 | log_fatal ("can't allocate expression"); |
4319 | (*expr) -> op = expr_variable_exists; | |
fdac15d9 | 4320 | (*expr) -> data.variable = dmalloc (strlen (val) + 1, MDL); |
f579f39f TL |
4321 | if (!(*expr)->data.variable) |
4322 | log_fatal ("can't allocate variable name"); | |
4323 | strcpy ((*expr) -> data.variable, val); | |
b3519f23 | 4324 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4325 | if (token != RPAREN) |
4326 | goto norparen; | |
4327 | break; | |
4328 | ||
33ea4622 DH |
4329 | /* This parses 'gethostname()'. */ |
4330 | case GETHOSTNAME: | |
dc9d7b08 | 4331 | skip_token(&val, NULL, cfile); |
33ea4622 DH |
4332 | if (!expression_allocate(expr, MDL)) |
4333 | log_fatal("can't allocate expression"); | |
4334 | (*expr)->op = expr_gethostname; | |
4335 | ||
4336 | token = next_token(NULL, NULL, cfile); | |
4337 | if (token != LPAREN) | |
4338 | goto nolparen; | |
4339 | ||
4340 | token = next_token(NULL, NULL, cfile); | |
4341 | if (token != RPAREN) | |
4342 | goto norparen; | |
023fbaa0 TM |
4343 | break; |
4344 | ||
4345 | case GETHOSTBYNAME: | |
dc9d7b08 | 4346 | skip_token(&val, NULL, cfile); |
023fbaa0 TM |
4347 | token = next_token(NULL, NULL, cfile); |
4348 | if (token != LPAREN) | |
4349 | goto nolparen; | |
4350 | ||
4351 | /* The argument is a quoted string. */ | |
4352 | token = next_token(&val, NULL, cfile); | |
4353 | if (token != STRING) { | |
4354 | parse_warn(cfile, "Expecting quoted literal: " | |
4355 | "\"foo.example.com\""); | |
4356 | skip_to_semi(cfile); | |
4357 | *lose = 1; | |
4358 | return 0; | |
4359 | } | |
4360 | if (!make_host_lookup(expr, val)) | |
4361 | log_fatal("Error creating gethostbyname() internal " | |
4362 | "record. (%s:%d)", MDL); | |
4363 | ||
4364 | token = next_token(NULL, NULL, cfile); | |
4365 | if (token != RPAREN) | |
4366 | goto norparen; | |
33ea4622 DH |
4367 | break; |
4368 | ||
619304cd SR |
4369 | case V6RELAY: |
4370 | skip_token(&val, NULL, cfile); | |
4371 | if (!expression_allocate (expr, MDL)) | |
4372 | log_fatal ("can't allocate expression"); | |
4373 | (*expr)->op = expr_v6relay; | |
4374 | ||
4375 | token = next_token (&val, NULL, cfile); | |
4376 | if (token != LPAREN) | |
4377 | goto nolparen; | |
4378 | ||
4379 | if (!parse_numeric_expression (&(*expr)->data.v6relay.relay, | |
4380 | cfile, lose)) | |
4381 | goto nodata; | |
4382 | ||
4383 | token = next_token (&val, NULL, cfile); | |
4384 | if (token != COMMA) | |
4385 | goto nocomma; | |
4386 | ||
4387 | if (!parse_data_expression (&(*expr)->data.v6relay.roption, | |
4388 | cfile, lose)) | |
4389 | goto nodata; | |
4390 | ||
4391 | token = next_token (&val, NULL, cfile); | |
4392 | ||
4393 | if (token != RPAREN) | |
4394 | goto norparen; | |
4395 | break; | |
4396 | ||
02a015fb | 4397 | /* Not a valid start to an expression... */ |
be6be08d | 4398 | default: |
f579f39f TL |
4399 | if (token != NAME && token != NUMBER_OR_NAME) |
4400 | return 0; | |
4401 | ||
dc9d7b08 | 4402 | skip_token(&val, (unsigned *)0, cfile); |
08514fb8 TL |
4403 | |
4404 | /* Save the name of the variable being referenced. */ | |
4405 | cptr = dmalloc (strlen (val) + 1, MDL); | |
4406 | if (!cptr) | |
4407 | log_fatal ("can't allocate variable name"); | |
4408 | strcpy (cptr, val); | |
4409 | ||
4410 | /* Simple variable reference, as far as we can tell. */ | |
b3519f23 | 4411 | token = peek_token (&val, (unsigned *)0, cfile); |
08514fb8 TL |
4412 | if (token != LPAREN) { |
4413 | if (!expression_allocate (expr, MDL)) | |
4414 | log_fatal ("can't allocate expression"); | |
4415 | (*expr) -> op = expr_variable_reference; | |
4416 | (*expr) -> data.variable = cptr; | |
4417 | break; | |
4418 | } | |
4419 | ||
dc9d7b08 | 4420 | skip_token(&val, (unsigned *)0, cfile); |
4bd8800e | 4421 | if (!expression_allocate (expr, MDL)) |
f579f39f | 4422 | log_fatal ("can't allocate expression"); |
08514fb8 TL |
4423 | (*expr) -> op = expr_funcall; |
4424 | (*expr) -> data.funcall.name = cptr; | |
4425 | ||
4426 | /* Now parse the argument list. */ | |
4427 | ep = &(*expr) -> data.funcall.arglist; | |
4428 | do { | |
4429 | if (!expression_allocate (ep, MDL)) | |
4430 | log_fatal ("can't allocate expression"); | |
4431 | (*ep) -> op = expr_arg; | |
4432 | if (!parse_expression (&(*ep) -> data.arg.val, | |
4433 | cfile, lose, context_any, | |
4434 | (struct expression **)0, | |
4435 | expr_none)) { | |
4436 | if (!*lose) { | |
4437 | parse_warn (cfile, | |
4438 | "expecting expression."); | |
4439 | *lose = 1; | |
4440 | } | |
4441 | skip_to_semi (cfile); | |
4442 | expression_dereference (expr, MDL); | |
4443 | return 0; | |
4444 | } | |
4445 | ep = &((*ep) -> data.arg.next); | |
b3519f23 | 4446 | token = next_token (&val, (unsigned *)0, cfile); |
08514fb8 TL |
4447 | } while (token == COMMA); |
4448 | if (token != RPAREN) { | |
4449 | parse_warn (cfile, "Right parenthesis expected."); | |
4450 | skip_to_semi (cfile); | |
4451 | *lose = 1; | |
4452 | expression_dereference (expr, MDL); | |
4453 | return 0; | |
4454 | } | |
f579f39f | 4455 | break; |
be6be08d | 4456 | } |
02a015fb | 4457 | return 1; |
be6be08d TL |
4458 | } |
4459 | ||
02a015fb TL |
4460 | /* Parse an expression. */ |
4461 | ||
4462 | int parse_expression (expr, cfile, lose, context, plhs, binop) | |
4463 | struct expression **expr; | |
4615d498 | 4464 | struct parse *cfile; |
02a015fb TL |
4465 | int *lose; |
4466 | enum expression_context context; | |
4467 | struct expression **plhs; | |
4468 | enum expr_op binop; | |
4469 | { | |
4470 | enum dhcp_token token; | |
b1b7b521 | 4471 | const char *val; |
02a015fb | 4472 | struct expression *rhs = (struct expression *)0, *tmp; |
962dc4ab | 4473 | struct expression *lhs = (struct expression *)0; |
02a015fb | 4474 | enum expr_op next_op; |
1898dcf7 TL |
4475 | enum expression_context |
4476 | lhs_context = context_any, | |
4477 | rhs_context = context_any; | |
02a015fb TL |
4478 | |
4479 | /* Consume the left hand side we were passed. */ | |
4480 | if (plhs) { | |
962dc4ab TL |
4481 | expression_reference (&lhs, *plhs, MDL); |
4482 | expression_dereference (plhs, MDL); | |
4483 | } | |
02a015fb TL |
4484 | |
4485 | new_rhs: | |
4486 | if (!parse_non_binary (&rhs, cfile, lose, context)) { | |
4487 | /* If we already have a left-hand side, then it's not | |
4488 | okay for there not to be a right-hand side here, so | |
4489 | we need to flag it as an error. */ | |
4490 | if (lhs) { | |
4491 | if (!*lose) { | |
4615d498 TL |
4492 | parse_warn (cfile, |
4493 | "expecting right-hand side."); | |
02a015fb TL |
4494 | *lose = 1; |
4495 | skip_to_semi (cfile); | |
4496 | } | |
4bd8800e | 4497 | expression_dereference (&lhs, MDL); |
02a015fb TL |
4498 | } |
4499 | return 0; | |
4500 | } | |
4501 | ||
4502 | /* At this point, rhs contains either an entire subexpression, | |
4503 | or at least a left-hand-side. If we do not see a binary token | |
4504 | as the next token, we're done with the expression. */ | |
4505 | ||
b3519f23 | 4506 | token = peek_token (&val, (unsigned *)0, cfile); |
02a015fb | 4507 | switch (token) { |
2b965a44 | 4508 | case BANG: |
dc9d7b08 | 4509 | skip_token(&val, (unsigned *)0, cfile); |
b3519f23 | 4510 | token = peek_token (&val, (unsigned *)0, cfile); |
2b965a44 TL |
4511 | if (token != EQUAL) { |
4512 | parse_warn (cfile, "! in boolean context without ="); | |
4513 | *lose = 1; | |
4514 | skip_to_semi (cfile); | |
4515 | if (lhs) | |
4bd8800e | 4516 | expression_dereference (&lhs, MDL); |
2b965a44 TL |
4517 | return 0; |
4518 | } | |
4519 | next_op = expr_not_equal; | |
1898dcf7 | 4520 | context = expression_context (rhs); |
2b965a44 TL |
4521 | break; |
4522 | ||
02a015fb TL |
4523 | case EQUAL: |
4524 | next_op = expr_equal; | |
1898dcf7 | 4525 | context = expression_context (rhs); |
02a015fb TL |
4526 | break; |
4527 | ||
dd328225 DH |
4528 | case TILDE: |
4529 | #ifdef HAVE_REGEX_H | |
dc9d7b08 | 4530 | skip_token(&val, NULL, cfile); |
dd328225 DH |
4531 | token = peek_token(&val, NULL, cfile); |
4532 | ||
4533 | if (token == TILDE) | |
4534 | next_op = expr_iregex_match; | |
4535 | else if (token == EQUAL) | |
4536 | next_op = expr_regex_match; | |
4537 | else { | |
4538 | parse_warn(cfile, "expecting ~= or ~~ operator"); | |
4539 | *lose = 1; | |
4540 | skip_to_semi(cfile); | |
4541 | if (lhs) | |
4542 | expression_dereference(&lhs, MDL); | |
4543 | return 0; | |
4544 | } | |
4545 | ||
4546 | context = expression_context(rhs); | |
4547 | #else | |
4548 | parse_warn(cfile, "No support for regex operator."); | |
4549 | *lose = 1; | |
4550 | skip_to_semi(cfile); | |
4551 | if (lhs != NULL) | |
4552 | expression_dereference(&lhs, MDL); | |
4553 | return 0; | |
4554 | #endif | |
4555 | break; | |
4556 | ||
02a015fb TL |
4557 | case AND: |
4558 | next_op = expr_and; | |
1898dcf7 | 4559 | context = expression_context (rhs); |
02a015fb TL |
4560 | break; |
4561 | ||
4562 | case OR: | |
4563 | next_op = expr_or; | |
1898dcf7 | 4564 | context = expression_context (rhs); |
02a015fb TL |
4565 | break; |
4566 | ||
31cb2a5f TL |
4567 | case PLUS: |
4568 | next_op = expr_add; | |
1898dcf7 | 4569 | context = expression_context (rhs); |
31cb2a5f TL |
4570 | break; |
4571 | ||
4572 | case MINUS: | |
4573 | next_op = expr_subtract; | |
1898dcf7 | 4574 | context = expression_context (rhs); |
31cb2a5f TL |
4575 | break; |
4576 | ||
4577 | case SLASH: | |
4578 | next_op = expr_divide; | |
1898dcf7 | 4579 | context = expression_context (rhs); |
31cb2a5f TL |
4580 | break; |
4581 | ||
4582 | case ASTERISK: | |
4583 | next_op = expr_multiply; | |
1898dcf7 | 4584 | context = expression_context (rhs); |
31cb2a5f TL |
4585 | break; |
4586 | ||
4587 | case PERCENT: | |
4588 | next_op = expr_remainder; | |
1898dcf7 | 4589 | context = expression_context (rhs); |
31cb2a5f TL |
4590 | break; |
4591 | ||
3c98e80b DN |
4592 | case AMPERSAND: |
4593 | next_op = expr_binary_and; | |
1898dcf7 | 4594 | context = expression_context (rhs); |
3c98e80b DN |
4595 | break; |
4596 | ||
4597 | case PIPE: | |
4598 | next_op = expr_binary_or; | |
1898dcf7 | 4599 | context = expression_context (rhs); |
3c98e80b DN |
4600 | break; |
4601 | ||
4602 | case CARET: | |
4603 | next_op = expr_binary_xor; | |
1898dcf7 | 4604 | context = expression_context (rhs); |
3c98e80b DN |
4605 | break; |
4606 | ||
02a015fb TL |
4607 | default: |
4608 | next_op = expr_none; | |
4609 | } | |
4610 | ||
4611 | /* If we have no lhs yet, we just parsed it. */ | |
4612 | if (!lhs) { | |
4613 | /* If there was no operator following what we just parsed, | |
4614 | then we're done - return it. */ | |
4615 | if (next_op == expr_none) { | |
4616 | *expr = rhs; | |
4617 | return 1; | |
4618 | } | |
4619 | lhs = rhs; | |
4620 | rhs = (struct expression *)0; | |
4621 | binop = next_op; | |
dc9d7b08 | 4622 | skip_token(&val, (unsigned *)0, cfile); |
02a015fb TL |
4623 | goto new_rhs; |
4624 | } | |
4625 | ||
98311e4b DH |
4626 | /* If the next binary operator is of greater precedence than the |
4627 | * current operator, then rhs we have parsed so far is actually | |
4628 | * the lhs of the next operator. To get this value, we have to | |
4629 | * recurse. | |
4630 | */ | |
4631 | if (binop != expr_none && next_op != expr_none && | |
4632 | op_precedence (binop, next_op) < 0) { | |
4633 | ||
4634 | /* Eat the subexpression operator token, which we pass to | |
4635 | * parse_expression...we only peek()'d earlier. | |
4636 | */ | |
dc9d7b08 | 4637 | skip_token(&val, (unsigned *)0, cfile); |
98311e4b DH |
4638 | |
4639 | /* Continue parsing of the right hand side with that token. */ | |
4640 | tmp = rhs; | |
4641 | rhs = (struct expression *)0; | |
4642 | if (!parse_expression (&rhs, cfile, lose, op_context (next_op), | |
4643 | &tmp, next_op)) { | |
4644 | if (!*lose) { | |
4645 | parse_warn (cfile, | |
4646 | "expecting a subexpression"); | |
4647 | *lose = 1; | |
4648 | } | |
4649 | return 0; | |
4650 | } | |
4651 | next_op = expr_none; | |
4652 | } | |
4653 | ||
4654 | if (binop != expr_none) { | |
4655 | rhs_context = expression_context(rhs); | |
4656 | lhs_context = expression_context(lhs); | |
4657 | ||
4658 | if ((rhs_context != context_any) && (lhs_context != context_any) && | |
4659 | (rhs_context != lhs_context)) { | |
4660 | parse_warn (cfile, "illegal expression relating different types"); | |
4661 | skip_to_semi (cfile); | |
4662 | expression_dereference (&rhs, MDL); | |
4663 | expression_dereference (&lhs, MDL); | |
4664 | *lose = 1; | |
4665 | return 0; | |
4666 | } | |
4667 | ||
4668 | switch(binop) { | |
4669 | case expr_not_equal: | |
4670 | case expr_equal: | |
4671 | if ((rhs_context != context_data_or_numeric) && | |
4672 | (rhs_context != context_data) && | |
4673 | (rhs_context != context_numeric) && | |
4674 | (rhs_context != context_any)) { | |
4675 | parse_warn (cfile, "expecting data/numeric expression"); | |
4676 | skip_to_semi (cfile); | |
4677 | expression_dereference (&rhs, MDL); | |
4678 | *lose = 1; | |
4679 | return 0; | |
4680 | } | |
4681 | break; | |
4682 | ||
dd328225 DH |
4683 | case expr_regex_match: |
4684 | #ifdef HAVE_REGEX_H | |
4685 | if (expression_context(rhs) != context_data) { | |
4686 | parse_warn(cfile, "expecting data expression"); | |
4687 | skip_to_semi(cfile); | |
4688 | expression_dereference(&rhs, MDL); | |
4689 | *lose = 1; | |
4690 | return 0; | |
4691 | } | |
4692 | #else | |
4693 | /* It should not be possible to attempt to parse the right | |
4694 | * hand side of an operator there is no support for. | |
4695 | */ | |
4696 | log_fatal("Impossible condition at %s:%d.", MDL); | |
4697 | #endif | |
4698 | break; | |
4699 | ||
98311e4b DH |
4700 | case expr_and: |
4701 | case expr_or: | |
4702 | if ((rhs_context != context_boolean) && | |
4703 | (rhs_context != context_any)) { | |
4704 | parse_warn (cfile, "expecting boolean expressions"); | |
4705 | skip_to_semi (cfile); | |
4706 | expression_dereference (&rhs, MDL); | |
4707 | *lose = 1; | |
4708 | return 0; | |
4709 | } | |
4710 | break; | |
4711 | ||
4712 | case expr_add: | |
4713 | case expr_subtract: | |
4714 | case expr_divide: | |
4715 | case expr_multiply: | |
4716 | case expr_remainder: | |
4717 | case expr_binary_and: | |
4718 | case expr_binary_or: | |
4719 | case expr_binary_xor: | |
4720 | if ((rhs_context != context_numeric) && | |
4721 | (rhs_context != context_any)) { | |
4722 | parse_warn (cfile, "expecting numeric expressions"); | |
4723 | skip_to_semi (cfile); | |
4724 | expression_dereference (&rhs, MDL); | |
4725 | *lose = 1; | |
4726 | return 0; | |
4727 | } | |
4728 | break; | |
4729 | ||
4730 | default: | |
4731 | break; | |
4732 | } | |
4733 | } | |
4734 | ||
02a015fb TL |
4735 | /* Now, if we didn't find a binary operator, we're done parsing |
4736 | this subexpression, so combine it with the preceding binary | |
4737 | operator and return the result. */ | |
4738 | if (next_op == expr_none) { | |
4bd8800e | 4739 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4740 | log_fatal ("Can't allocate expression!"); |
02a015fb TL |
4741 | |
4742 | (*expr) -> op = binop; | |
4743 | /* All the binary operators' data union members | |
4744 | are the same, so we'll cheat and use the member | |
4745 | for the equals operator. */ | |
4746 | (*expr) -> data.equal [0] = lhs; | |
4747 | (*expr) -> data.equal [1] = rhs; | |
4748 | return 1; | |
4749 | } | |
4750 | ||
4751 | /* Eat the operator token - we now know it was a binary operator... */ | |
dc9d7b08 | 4752 | skip_token(&val, (unsigned *)0, cfile); |
02a015fb | 4753 | |
02a015fb TL |
4754 | /* Now combine the LHS and the RHS using binop. */ |
4755 | tmp = (struct expression *)0; | |
4bd8800e | 4756 | if (!expression_allocate (&tmp, MDL)) |
8ae2d595 | 4757 | log_fatal ("No memory for equal precedence combination."); |
02a015fb TL |
4758 | |
4759 | /* Store the LHS and RHS. */ | |
4760 | tmp -> data.equal [0] = lhs; | |
4761 | tmp -> data.equal [1] = rhs; | |
4762 | tmp -> op = binop; | |
4763 | ||
4764 | lhs = tmp; | |
4765 | tmp = (struct expression *)0; | |
4766 | rhs = (struct expression *)0; | |
4767 | ||
02a015fb TL |
4768 | binop = next_op; |
4769 | goto new_rhs; | |
4770 | } | |
4771 | ||
be6be08d | 4772 | |
b55d0d5f EH |
4773 | int parse_option_data (expr, cfile, lookups, option) |
4774 | struct expression **expr; | |
4775 | struct parse *cfile; | |
4776 | int lookups; | |
4777 | struct option *option; | |
be6be08d | 4778 | { |
b1b7b521 | 4779 | const char *val; |
d8fc5060 | 4780 | const char *fmt = NULL; |
02a015fb | 4781 | struct expression *tmp; |
b55d0d5f | 4782 | enum dhcp_token token; |
a82abfc7 | 4783 | |
be6be08d | 4784 | do { |
b55d0d5f EH |
4785 | /* |
4786 | * Set a flag if this is an array of a simple type (i.e., | |
4787 | * not an array of pairs of IP addresses, or something like | |
4788 | * that. | |
4789 | */ | |
f800f4f6 | 4790 | int uniform = 0; |
be6be08d | 4791 | |
d8fc5060 TL |
4792 | and_again: |
4793 | /* Set fmt to start of format for 'A' and one char back | |
d5341d9b SK |
4794 | * for 'a'. |
4795 | */ | |
4796 | if ((fmt != NULL) && (fmt != option->format) && (*fmt == 'a')) | |
d8fc5060 | 4797 | fmt -= 1; |
d5341d9b SK |
4798 | else if ((fmt == NULL) || (*fmt == 'A')) |
4799 | fmt = option->format; | |
d8fc5060 TL |
4800 | |
4801 | /* 'a' means always uniform */ | |
1babd56e | 4802 | if ((fmt[0] != 'Z') && (tolower((unsigned char)fmt[1]) == 'a')) |
f800f4f6 | 4803 | uniform = 1; |
d8fc5060 | 4804 | |
f800f4f6 | 4805 | do { |
d8fc5060 | 4806 | if ((*fmt == 'A') || (*fmt == 'a')) |
be6be08d | 4807 | break; |
e1a40211 SR |
4808 | if (*fmt == 'o') { |
4809 | /* consume the optional flag */ | |
4810 | fmt++; | |
d8fc5060 | 4811 | continue; |
e1a40211 SR |
4812 | } |
4813 | ||
4814 | if (fmt[1] == 'o') { | |
4815 | /* | |
4816 | * A value for the current format is | |
4817 | * optional - check to see if the next | |
4818 | * token is a semi-colon if so we don't | |
4819 | * need to parse it and doing so would | |
4820 | * consume the semi-colon which our | |
4821 | * caller is expecting to parse | |
4822 | */ | |
4823 | token = peek_token(&val, (unsigned *)0, | |
4824 | cfile); | |
4825 | if (token == SEMI) { | |
4826 | fmt++; | |
4827 | continue; | |
4828 | } | |
4829 | } | |
b55d0d5f EH |
4830 | |
4831 | tmp = *expr; | |
4832 | *expr = NULL; | |
4cafb815 | 4833 | |
b55d0d5f | 4834 | if (!parse_option_token(expr, cfile, &fmt, tmp, |
4cafb815 | 4835 | uniform, lookups)) { |
d8fc5060 TL |
4836 | if (fmt [1] != 'o') { |
4837 | if (tmp) | |
4838 | expression_dereference (&tmp, | |
4839 | MDL); | |
4840 | return 0; | |
4841 | } | |
b55d0d5f EH |
4842 | *expr = tmp; |
4843 | tmp = NULL; | |
02a015fb | 4844 | } |
4cafb815 | 4845 | if (tmp) |
4bd8800e | 4846 | expression_dereference (&tmp, MDL); |
f800f4f6 | 4847 | |
4cafb815 | 4848 | fmt++; |
f800f4f6 SK |
4849 | } while (*fmt != '\0'); |
4850 | ||
d8fc5060 | 4851 | if ((*fmt == 'A') || (*fmt == 'a')) { |
b3519f23 | 4852 | token = peek_token (&val, (unsigned *)0, cfile); |
d8fc5060 | 4853 | /* Comma means: continue with next element in array */ |
be6be08d | 4854 | if (token == COMMA) { |
dc9d7b08 | 4855 | skip_token(&val, (unsigned *)0, cfile); |
be6be08d TL |
4856 | continue; |
4857 | } | |
d8fc5060 TL |
4858 | /* no comma: end of array. |
4859 | 'A' or end of string means: leave the loop */ | |
4860 | if ((*fmt == 'A') || (fmt[1] == '\0')) | |
4861 | break; | |
4862 | /* 'a' means: go on with next char */ | |
4863 | if (*fmt == 'a') { | |
4864 | fmt++; | |
4865 | goto and_again; | |
4866 | } | |
be6be08d | 4867 | } |
d8fc5060 | 4868 | } while ((*fmt == 'A') || (*fmt == 'a')); |
be6be08d | 4869 | |
b55d0d5f EH |
4870 | return 1; |
4871 | } | |
4872 | ||
4873 | /* option-statement :== identifier DOT identifier <syntax> SEMI | |
4874 | | identifier <syntax> SEMI | |
4875 | ||
4876 | Option syntax is handled specially through format strings, so it | |
4877 | would be painful to come up with BNF for it. However, it always | |
4878 | starts as above and ends in a SEMI. */ | |
4879 | ||
4880 | int parse_option_statement (result, cfile, lookups, option, op) | |
4881 | struct executable_statement **result; | |
4882 | struct parse *cfile; | |
4883 | int lookups; | |
4884 | struct option *option; | |
4885 | enum statement_op op; | |
4886 | { | |
4887 | const char *val; | |
4888 | enum dhcp_token token; | |
4889 | struct expression *expr = (struct expression *)0; | |
4890 | int lose; | |
b55d0d5f EH |
4891 | |
4892 | token = peek_token (&val, (unsigned *)0, cfile); | |
4cafb815 | 4893 | if ((token == SEMI) && (option->format[0] != 'Z')) { |
b55d0d5f | 4894 | /* Eat the semicolon... */ |
f800f4f6 SK |
4895 | /* |
4896 | * XXXSK: I'm not sure why we should ever get here, but we | |
4897 | * do during our startup. This confuses things if | |
4898 | * we are parsing a zero-length option, so don't | |
4899 | * eat the semicolon token in that case. | |
4900 | */ | |
dc9d7b08 | 4901 | skip_token(&val, (unsigned *)0, cfile); |
f800f4f6 | 4902 | } else if (token == EQUAL) { |
b55d0d5f | 4903 | /* Eat the equals sign. */ |
dc9d7b08 | 4904 | skip_token(&val, (unsigned *)0, cfile); |
b55d0d5f EH |
4905 | |
4906 | /* Parse a data expression and use its value for the data. */ | |
4907 | if (!parse_data_expression (&expr, cfile, &lose)) { | |
4908 | /* In this context, we must have an executable | |
4909 | statement, so if we found something else, it's | |
4910 | still an error. */ | |
4911 | if (!lose) { | |
4912 | parse_warn (cfile, | |
4913 | "expecting a data expression."); | |
4914 | skip_to_semi (cfile); | |
4915 | } | |
4916 | return 0; | |
4917 | } | |
f800f4f6 SK |
4918 | } else { |
4919 | if (! parse_option_data(&expr, cfile, lookups, option)) | |
4920 | return 0; | |
b55d0d5f EH |
4921 | } |
4922 | ||
25541f2f | 4923 | if (!parse_semi (cfile)) |
79a65726 | 4924 | return 0; |
4bd8800e | 4925 | if (!executable_statement_allocate (result, MDL)) |
79a65726 | 4926 | log_fatal ("no memory for option statement."); |
b55d0d5f EH |
4927 | |
4928 | (*result)->op = op; | |
4929 | if (expr && !option_cache (&(*result)->data.option, | |
4930 | NULL, expr, option, MDL)) | |
52c9d530 | 4931 | log_fatal ("no memory for option cache"); |
b55d0d5f | 4932 | |
d758ad8c TL |
4933 | if (expr) |
4934 | expression_dereference (&expr, MDL); | |
b55d0d5f | 4935 | |
79a65726 | 4936 | return 1; |
be6be08d TL |
4937 | } |
4938 | ||
02a015fb TL |
4939 | int parse_option_token (rv, cfile, fmt, expr, uniform, lookups) |
4940 | struct expression **rv; | |
4615d498 | 4941 | struct parse *cfile; |
63a0ff88 | 4942 | const char **fmt; |
be6be08d TL |
4943 | struct expression *expr; |
4944 | int uniform; | |
4945 | int lookups; | |
4946 | { | |
b1b7b521 | 4947 | const char *val; |
02a015fb TL |
4948 | enum dhcp_token token; |
4949 | struct expression *t = (struct expression *)0; | |
be6be08d | 4950 | unsigned char buf [4]; |
b3519f23 | 4951 | unsigned len; |
be6be08d | 4952 | struct iaddr addr; |
28868515 | 4953 | int compress; |
57fbc772 | 4954 | isc_boolean_t freeval = ISC_FALSE; |
b49c02cc | 4955 | const char *f, *g; |
42c6a803 | 4956 | struct enumeration_value *e; |
be6be08d | 4957 | |
63a0ff88 | 4958 | switch (**fmt) { |
52c9d530 | 4959 | case 'U': |
98311e4b | 4960 | token = next_token (&val, &len, cfile); |
52c9d530 | 4961 | if (!is_identifier (token)) { |
63a0ff88 | 4962 | if ((*fmt) [1] != 'o') { |
d8fc5060 | 4963 | parse_warn (cfile, "expecting identifier."); |
98311e4b DH |
4964 | if (token != SEMI) |
4965 | skip_to_semi (cfile); | |
d8fc5060 | 4966 | } |
52c9d530 TL |
4967 | return 0; |
4968 | } | |
b1b7b521 | 4969 | if (!make_const_data (&t, (const unsigned char *)val, |
d758ad8c | 4970 | len, 1, 1, MDL)) |
52c9d530 TL |
4971 | log_fatal ("No memory for %s", val); |
4972 | break; | |
4973 | ||
962dc4ab | 4974 | case 'E': |
b49c02cc TL |
4975 | g = strchr (*fmt, '.'); |
4976 | if (!g) { | |
962dc4ab TL |
4977 | parse_warn (cfile, |
4978 | "malformed encapsulation format (bug!)"); | |
4979 | skip_to_semi (cfile); | |
4980 | return 0; | |
4981 | } | |
b49c02cc | 4982 | *fmt = g; |
0f750c4f SR |
4983 | /* FALL THROUGH */ |
4984 | /* to get string value for the option */ | |
be6be08d | 4985 | case 'X': |
b3519f23 | 4986 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d | 4987 | if (token == NUMBER_OR_NAME || token == NUMBER) { |
4bd8800e | 4988 | if (!expression_allocate (&t, MDL)) |
02a015fb | 4989 | return 0; |
8cc4d857 | 4990 | if (!parse_cshl (&t -> data.const_data, cfile)) { |
4bd8800e | 4991 | expression_dereference (&t, MDL); |
01e20b9e | 4992 | return 0; |
8cc4d857 | 4993 | } |
efc79acb | 4994 | t -> op = expr_const_data; |
be6be08d | 4995 | } else { |
98311e4b DH |
4996 | token = next_token (&val, &len, cfile); |
4997 | ||
4998 | if(token == STRING) { | |
4999 | if (!make_const_data (&t, | |
5000 | (const unsigned char *)val, | |
5001 | len, 1, 1, MDL)) | |
5002 | log_fatal ("No memory for \"%s\"", val); | |
98311e4b | 5003 | } else { |
b55d0d5f EH |
5004 | if ((*fmt) [1] != 'o') { |
5005 | parse_warn (cfile, "expecting string " | |
5006 | "or hexadecimal data."); | |
5007 | skip_to_semi (cfile); | |
5008 | } | |
98311e4b | 5009 | return 0; |
d8fc5060 | 5010 | } |
be6be08d TL |
5011 | } |
5012 | break; | |
dba5803b DH |
5013 | |
5014 | case 'D': /* Domain list... */ | |
98bd7ca0 DH |
5015 | if ((*fmt)[1] == 'c') { |
5016 | compress = 1; | |
5017 | /* Skip the compress-flag atom. */ | |
5018 | (*fmt)++; | |
5019 | } else | |
5020 | compress = 0; | |
5021 | ||
5022 | t = parse_domain_list(cfile, compress); | |
dba5803b DH |
5023 | |
5024 | if (!t) { | |
5025 | if ((*fmt)[1] != 'o') | |
5026 | skip_to_semi(cfile); | |
5027 | return 0; | |
5028 | } | |
5029 | ||
5030 | break; | |
5031 | ||
d758ad8c TL |
5032 | case 'd': /* Domain name... */ |
5033 | val = parse_host_name (cfile); | |
5034 | if (!val) { | |
5035 | parse_warn (cfile, "not a valid domain name."); | |
5036 | skip_to_semi (cfile); | |
5037 | return 0; | |
5038 | } | |
5039 | len = strlen (val); | |
57fbc772 | 5040 | freeval = ISC_TRUE; |
d758ad8c TL |
5041 | goto make_string; |
5042 | ||
be6be08d | 5043 | case 't': /* Text string... */ |
98311e4b | 5044 | token = next_token (&val, &len, cfile); |
be6be08d | 5045 | if (token != STRING && !is_identifier (token)) { |
63a0ff88 | 5046 | if ((*fmt) [1] != 'o') { |
d8fc5060 TL |
5047 | parse_warn (cfile, "expecting string."); |
5048 | if (token != SEMI) | |
5049 | skip_to_semi (cfile); | |
5050 | } | |
02a015fb | 5051 | return 0; |
be6be08d | 5052 | } |
d758ad8c | 5053 | make_string: |
b1b7b521 | 5054 | if (!make_const_data (&t, (const unsigned char *)val, |
d758ad8c | 5055 | len, 1, 1, MDL)) |
8ae2d595 | 5056 | log_fatal ("No memory for concatenation"); |
57fbc772 SR |
5057 | if (freeval == ISC_TRUE) { |
5058 | dfree((char *)val, MDL); | |
5059 | freeval = ISC_FALSE; | |
dc9d7b08 | 5060 | POST(freeval); |
57fbc772 | 5061 | } |
be6be08d TL |
5062 | break; |
5063 | ||
42c6a803 | 5064 | case 'N': |
63a0ff88 | 5065 | f = (*fmt) + 1; |
b49c02cc TL |
5066 | g = strchr (*fmt, '.'); |
5067 | if (!g) { | |
42c6a803 TL |
5068 | parse_warn (cfile, "malformed %s (bug!)", |
5069 | "enumeration format"); | |
5070 | foo: | |
5071 | skip_to_semi (cfile); | |
5072 | return 0; | |
5073 | } | |
b49c02cc | 5074 | *fmt = g; |
b3519f23 | 5075 | token = next_token (&val, (unsigned *)0, cfile); |
42c6a803 TL |
5076 | if (!is_identifier (token)) { |
5077 | parse_warn (cfile, | |
5078 | "identifier expected"); | |
5079 | goto foo; | |
5080 | } | |
c54db708 | 5081 | e = find_enumeration_value (f, (*fmt) - f, &len, val); |
42c6a803 TL |
5082 | if (!e) { |
5083 | parse_warn (cfile, "unknown value"); | |
5084 | goto foo; | |
5085 | } | |
c54db708 | 5086 | if (!make_const_data (&t, &e -> value, len, 0, 1, MDL)) |
42c6a803 TL |
5087 | return 0; |
5088 | break; | |
5089 | ||
be6be08d | 5090 | case 'I': /* IP address or hostname. */ |
02a015fb TL |
5091 | if (lookups) { |
5092 | if (!parse_ip_addr_or_hostname (&t, cfile, uniform)) | |
5093 | return 0; | |
5094 | } else { | |
be6be08d | 5095 | if (!parse_ip_addr (cfile, &addr)) |
02a015fb | 5096 | return 0; |
d758ad8c TL |
5097 | if (!make_const_data (&t, addr.iabuf, addr.len, |
5098 | 0, 1, MDL)) | |
02a015fb | 5099 | return 0; |
be6be08d | 5100 | } |
be6be08d | 5101 | break; |
98bd7ca0 DH |
5102 | |
5103 | case '6': /* IPv6 address. */ | |
5104 | if (!parse_ip6_addr(cfile, &addr)) { | |
5105 | return 0; | |
5106 | } | |
5107 | if (!make_const_data(&t, addr.iabuf, addr.len, 0, 1, MDL)) { | |
5108 | return 0; | |
5109 | } | |
5110 | break; | |
be6be08d | 5111 | |
fdac15d9 | 5112 | case 'T': /* Lease interval. */ |
98311e4b | 5113 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
5114 | if (token != INFINITE) |
5115 | goto check_number; | |
5116 | putLong (buf, -1); | |
d758ad8c | 5117 | if (!make_const_data (&t, buf, 4, 0, 1, MDL)) |
fdac15d9 TL |
5118 | return 0; |
5119 | break; | |
5120 | ||
be6be08d TL |
5121 | case 'L': /* Unsigned 32-bit integer... */ |
5122 | case 'l': /* Signed 32-bit integer... */ | |
98311e4b | 5123 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 | 5124 | check_number: |
98311e4b | 5125 | if ((token != NUMBER) && (token != NUMBER_OR_NAME)) { |
be6be08d | 5126 | need_number: |
63a0ff88 | 5127 | if ((*fmt) [1] != 'o') { |
d8fc5060 TL |
5128 | parse_warn (cfile, "expecting number."); |
5129 | if (token != SEMI) | |
5130 | skip_to_semi (cfile); | |
5131 | } | |
02a015fb | 5132 | return 0; |
be6be08d | 5133 | } |
4615d498 | 5134 | convert_num (cfile, buf, val, 0, 32); |
d758ad8c | 5135 | if (!make_const_data (&t, buf, 4, 0, 1, MDL)) |
02a015fb | 5136 | return 0; |
be6be08d | 5137 | break; |
02a015fb | 5138 | |
be6be08d TL |
5139 | case 's': /* Signed 16-bit integer. */ |
5140 | case 'S': /* Unsigned 16-bit integer. */ | |
b3519f23 | 5141 | token = next_token (&val, (unsigned *)0, cfile); |
98311e4b DH |
5142 | if ((token != NUMBER) && (token != NUMBER_OR_NAME)) |
5143 | goto need_number; | |
4615d498 | 5144 | convert_num (cfile, buf, val, 0, 16); |
d758ad8c | 5145 | if (!make_const_data (&t, buf, 2, 0, 1, MDL)) |
02a015fb | 5146 | return 0; |
be6be08d | 5147 | break; |
02a015fb | 5148 | |
be6be08d TL |
5149 | case 'b': /* Signed 8-bit integer. */ |
5150 | case 'B': /* Unsigned 8-bit integer. */ | |
b3519f23 | 5151 | token = next_token (&val, (unsigned *)0, cfile); |
98311e4b DH |
5152 | if ((token != NUMBER) && (token != NUMBER_OR_NAME)) |
5153 | goto need_number; | |
4615d498 | 5154 | convert_num (cfile, buf, val, 0, 8); |
d758ad8c | 5155 | if (!make_const_data (&t, buf, 1, 0, 1, MDL)) |
02a015fb | 5156 | return 0; |
be6be08d | 5157 | break; |
02a015fb | 5158 | |
be6be08d | 5159 | case 'f': /* Boolean flag. */ |
98311e4b | 5160 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 5161 | if (!is_identifier (token)) { |
63a0ff88 | 5162 | if ((*fmt) [1] != 'o') |
d8fc5060 | 5163 | parse_warn (cfile, "expecting identifier."); |
be6be08d | 5164 | bad_flag: |
63a0ff88 | 5165 | if ((*fmt) [1] != 'o') { |
d8fc5060 TL |
5166 | if (token != SEMI) |
5167 | skip_to_semi (cfile); | |
5168 | } | |
02a015fb | 5169 | return 0; |
be6be08d TL |
5170 | } |
5171 | if (!strcasecmp (val, "true") | |
5172 | || !strcasecmp (val, "on")) | |
5173 | buf [0] = 1; | |
5174 | else if (!strcasecmp (val, "false") | |
5175 | || !strcasecmp (val, "off")) | |
5176 | buf [0] = 0; | |
0776fd12 TL |
5177 | else if (!strcasecmp (val, "ignore")) |
5178 | buf [0] = 2; | |
be6be08d | 5179 | else { |
63a0ff88 | 5180 | if ((*fmt) [1] != 'o') |
d8fc5060 | 5181 | parse_warn (cfile, "expecting boolean."); |
be6be08d TL |
5182 | goto bad_flag; |
5183 | } | |
d758ad8c | 5184 | if (!make_const_data (&t, buf, 1, 0, 1, MDL)) |
02a015fb | 5185 | return 0; |
be6be08d | 5186 | break; |
02a015fb | 5187 | |
4cafb815 EH |
5188 | case 'Z': /* Zero-length option. */ |
5189 | token = peek_token (&val, (unsigned *)0, cfile); | |
5190 | if (token != SEMI) { | |
5191 | parse_warn(cfile, "semicolon expected."); | |
5192 | skip_to_semi(cfile); | |
5193 | } | |
5194 | buf[0] = '\0'; | |
f800f4f6 SK |
5195 | if (!make_const_data(&t, /* expression */ |
5196 | buf, /* buffer */ | |
5197 | 0, /* length */ | |
5198 | 0, /* terminated */ | |
5199 | 1, /* allocate */ | |
5200 | MDL)) | |
5201 | return 0; | |
5202 | break; | |
5203 | ||
be6be08d | 5204 | default: |
4cafb815 | 5205 | parse_warn (cfile, "Bad format '%c' in parse_option_token.", |
63a0ff88 | 5206 | **fmt); |
be6be08d | 5207 | skip_to_semi (cfile); |
02a015fb | 5208 | return 0; |
be6be08d | 5209 | } |
02a015fb TL |
5210 | if (expr) { |
5211 | if (!make_concat (rv, expr, t)) | |
5212 | return 0; | |
02a015fb | 5213 | } else |
d758ad8c TL |
5214 | expression_reference (rv, t, MDL); |
5215 | expression_dereference (&t, MDL); | |
02a015fb | 5216 | return 1; |
be6be08d | 5217 | } |
74f45f96 | 5218 | |
9a7f6fcd TL |
5219 | int parse_option_decl (oc, cfile) |
5220 | struct option_cache **oc; | |
5221 | struct parse *cfile; | |
5222 | { | |
5223 | const char *val; | |
5224 | int token; | |
5225 | u_int8_t buf [4]; | |
5226 | u_int8_t hunkbuf [1024]; | |
5227 | unsigned hunkix = 0; | |
42c6a803 | 5228 | const char *fmt, *f; |
4cba29f0 | 5229 | struct option *option=NULL; |
9a7f6fcd TL |
5230 | struct iaddr ip_addr; |
5231 | u_int8_t *dp; | |
98bd7ca0 | 5232 | const u_int8_t *cdp; |
9a7f6fcd TL |
5233 | unsigned len; |
5234 | int nul_term = 0; | |
5235 | struct buffer *bp; | |
5236 | int known = 0; | |
98bd7ca0 DH |
5237 | int compress; |
5238 | struct expression *express = NULL; | |
42c6a803 | 5239 | struct enumeration_value *e; |
f7fdb216 | 5240 | isc_result_t status; |
9a7f6fcd | 5241 | |
f7fdb216 DH |
5242 | status = parse_option_name (cfile, 0, &known, &option); |
5243 | if (status != ISC_R_SUCCESS || option == NULL) | |
9a7f6fcd TL |
5244 | return 0; |
5245 | ||
35de6c8c SR |
5246 | fmt = option->format; |
5247 | ||
9a7f6fcd TL |
5248 | /* Parse the option data... */ |
5249 | do { | |
35de6c8c SR |
5250 | for (; *fmt; fmt++) { |
5251 | if (*fmt == 'A') { | |
5252 | /* 'A' is an array of records, start at | |
5253 | * the beginning | |
5254 | */ | |
5255 | fmt = option->format; | |
5256 | break; | |
5257 | } | |
5258 | ||
5259 | if (*fmt == 'a') { | |
5260 | /* 'a' is an array of the last field, | |
5261 | * back up one format character | |
5262 | */ | |
5263 | fmt--; | |
9a7f6fcd | 5264 | break; |
35de6c8c | 5265 | } |
507fe25f FD |
5266 | if (*fmt == 'o' && fmt != option -> format) |
5267 | continue; | |
9a7f6fcd TL |
5268 | switch (*fmt) { |
5269 | case 'E': | |
5270 | fmt = strchr (fmt, '.'); | |
5271 | if (!fmt) { | |
5272 | parse_warn (cfile, | |
5273 | "malformed %s (bug!)", | |
5274 | "encapsulation format"); | |
f7fdb216 | 5275 | goto parse_exit; |
9a7f6fcd | 5276 | } |
0f750c4f SR |
5277 | /* FALL THROUGH */ |
5278 | /* to get string value for the option */ | |
9a7f6fcd TL |
5279 | case 'X': |
5280 | len = parse_X (cfile, &hunkbuf [hunkix], | |
5281 | sizeof hunkbuf - hunkix); | |
5282 | hunkix += len; | |
5283 | break; | |
5284 | ||
5285 | case 't': /* Text string... */ | |
c54db708 FD |
5286 | token = peek_token (&val, |
5287 | &len, cfile); | |
5288 | if (token == SEMI && fmt[1] == 'o') { | |
5289 | fmt++; | |
5290 | break; | |
5291 | } | |
b3519f23 TL |
5292 | token = next_token (&val, |
5293 | &len, cfile); | |
9a7f6fcd TL |
5294 | if (token != STRING) { |
5295 | parse_warn (cfile, | |
5296 | "expecting string."); | |
f7fdb216 | 5297 | goto parse_exit; |
9a7f6fcd | 5298 | } |
9a7f6fcd TL |
5299 | if (hunkix + len + 1 > sizeof hunkbuf) { |
5300 | parse_warn (cfile, | |
5301 | "option data buffer %s", | |
5302 | "overflow"); | |
f7fdb216 | 5303 | goto parse_exit; |
9a7f6fcd TL |
5304 | } |
5305 | memcpy (&hunkbuf [hunkix], val, len + 1); | |
5306 | nul_term = 1; | |
5307 | hunkix += len; | |
5308 | break; | |
5309 | ||
98bd7ca0 DH |
5310 | case 'D': |
5311 | if (fmt[1] == 'c') { | |
5312 | compress = 1; | |
5313 | fmt++; | |
5314 | } else | |
5315 | compress = 0; | |
5316 | ||
5317 | express = parse_domain_list(cfile, compress); | |
5318 | ||
5319 | if (express == NULL) | |
5320 | goto exit; | |
5321 | ||
5322 | if (express->op != expr_const_data) { | |
5323 | parse_warn(cfile, "unexpected " | |
5324 | "expression"); | |
5325 | goto parse_exit; | |
5326 | } | |
5327 | ||
5328 | len = express->data.const_data.len; | |
5329 | cdp = express->data.const_data.data; | |
5330 | ||
5331 | if ((hunkix + len) > sizeof(hunkbuf)) { | |
5332 | parse_warn(cfile, "option data buffer " | |
5333 | "overflow"); | |
5334 | goto parse_exit; | |
5335 | } | |
5336 | memcpy(&hunkbuf[hunkix], cdp, len); | |
5337 | hunkix += len; | |
5338 | ||
5339 | expression_dereference(&express, MDL); | |
5340 | break; | |
5341 | ||
42c6a803 | 5342 | case 'N': |
c54db708 | 5343 | f = fmt + 1; |
42c6a803 TL |
5344 | fmt = strchr (fmt, '.'); |
5345 | if (!fmt) { | |
5346 | parse_warn (cfile, | |
5347 | "malformed %s (bug!)", | |
5348 | "enumeration format"); | |
f7fdb216 | 5349 | goto parse_exit; |
42c6a803 | 5350 | } |
b3519f23 TL |
5351 | token = next_token (&val, |
5352 | (unsigned *)0, cfile); | |
42c6a803 TL |
5353 | if (!is_identifier (token)) { |
5354 | parse_warn (cfile, | |
5355 | "identifier expected"); | |
f7fdb216 | 5356 | goto parse_exit; |
42c6a803 | 5357 | } |
c54db708 FD |
5358 | e = find_enumeration_value (f, fmt - f, |
5359 | &len, val); | |
42c6a803 TL |
5360 | if (!e) { |
5361 | parse_warn (cfile, | |
5362 | "unknown value"); | |
f7fdb216 | 5363 | goto parse_exit; |
42c6a803 | 5364 | } |
42c6a803 TL |
5365 | dp = &e -> value; |
5366 | goto alloc; | |
5367 | ||
98bd7ca0 DH |
5368 | case '6': |
5369 | if (!parse_ip6_addr(cfile, &ip_addr)) | |
5370 | goto exit; | |
5371 | len = ip_addr.len; | |
5372 | dp = ip_addr.iabuf; | |
5373 | goto alloc; | |
5374 | ||
9a7f6fcd TL |
5375 | case 'I': /* IP address. */ |
5376 | if (!parse_ip_addr (cfile, &ip_addr)) | |
f7fdb216 | 5377 | goto exit; |
9a7f6fcd TL |
5378 | len = ip_addr.len; |
5379 | dp = ip_addr.iabuf; | |
5380 | ||
5381 | alloc: | |
5382 | if (hunkix + len > sizeof hunkbuf) { | |
5383 | parse_warn (cfile, | |
5384 | "option data buffer %s", | |
5385 | "overflow"); | |
f7fdb216 | 5386 | goto parse_exit; |
9a7f6fcd TL |
5387 | } |
5388 | memcpy (&hunkbuf [hunkix], dp, len); | |
5389 | hunkix += len; | |
5390 | break; | |
5391 | ||
5392 | case 'L': /* Unsigned 32-bit integer... */ | |
5393 | case 'l': /* Signed 32-bit integer... */ | |
b3519f23 TL |
5394 | token = next_token (&val, |
5395 | (unsigned *)0, cfile); | |
98311e4b DH |
5396 | if ((token != NUMBER) && |
5397 | (token != NUMBER_OR_NAME)) { | |
9a7f6fcd TL |
5398 | need_number: |
5399 | parse_warn (cfile, | |
5400 | "expecting number."); | |
5401 | if (token != SEMI) | |
f7fdb216 DH |
5402 | goto parse_exit; |
5403 | else | |
5404 | goto exit; | |
9a7f6fcd TL |
5405 | } |
5406 | convert_num (cfile, buf, val, 0, 32); | |
5407 | len = 4; | |
5408 | dp = buf; | |
5409 | goto alloc; | |
5410 | ||
5411 | case 's': /* Signed 16-bit integer. */ | |
5412 | case 'S': /* Unsigned 16-bit integer. */ | |
b3519f23 TL |
5413 | token = next_token (&val, |
5414 | (unsigned *)0, cfile); | |
98311e4b DH |
5415 | if ((token != NUMBER) && |
5416 | (token != NUMBER_OR_NAME)) | |
9a7f6fcd TL |
5417 | goto need_number; |
5418 | convert_num (cfile, buf, val, 0, 16); | |
5419 | len = 2; | |
5420 | dp = buf; | |
5421 | goto alloc; | |
5422 | ||
5423 | case 'b': /* Signed 8-bit integer. */ | |
5424 | case 'B': /* Unsigned 8-bit integer. */ | |
b3519f23 TL |
5425 | token = next_token (&val, |
5426 | (unsigned *)0, cfile); | |
98311e4b DH |
5427 | if ((token != NUMBER) && |
5428 | (token != NUMBER_OR_NAME)) | |
9a7f6fcd TL |
5429 | goto need_number; |
5430 | convert_num (cfile, buf, val, 0, 8); | |
5431 | len = 1; | |
5432 | dp = buf; | |
5433 | goto alloc; | |
5434 | ||
5435 | case 'f': /* Boolean flag. */ | |
b3519f23 TL |
5436 | token = next_token (&val, |
5437 | (unsigned *)0, cfile); | |
9a7f6fcd TL |
5438 | if (!is_identifier (token)) { |
5439 | parse_warn (cfile, | |
5440 | "expecting identifier."); | |
5441 | bad_flag: | |
5442 | if (token != SEMI) | |
f7fdb216 DH |
5443 | goto parse_exit; |
5444 | else | |
5445 | goto exit; | |
9a7f6fcd TL |
5446 | } |
5447 | if (!strcasecmp (val, "true") | |
5448 | || !strcasecmp (val, "on")) | |
5449 | buf [0] = 1; | |
5450 | else if (!strcasecmp (val, "false") | |
5451 | || !strcasecmp (val, "off")) | |
5452 | buf [0] = 0; | |
5453 | else { | |
5454 | parse_warn (cfile, | |
5455 | "expecting boolean."); | |
5456 | goto bad_flag; | |
5457 | } | |
5458 | len = 1; | |
5459 | dp = buf; | |
5460 | goto alloc; | |
5461 | ||
4cafb815 | 5462 | case 'Z': /* Zero-length option */ |
35de6c8c | 5463 | token = peek_token(&val, (unsigned *)0, cfile); |
4cafb815 EH |
5464 | if (token != SEMI) { |
5465 | parse_warn(cfile, | |
5466 | "semicolon expected."); | |
5467 | goto parse_exit; | |
5468 | } | |
5469 | len = 0; | |
5470 | buf[0] = '\0'; | |
5471 | break; | |
5472 | ||
9a7f6fcd TL |
5473 | default: |
5474 | log_error ("parse_option_param: Bad format %c", | |
5475 | *fmt); | |
f7fdb216 | 5476 | goto parse_exit; |
9a7f6fcd TL |
5477 | } |
5478 | } | |
b3519f23 | 5479 | token = next_token (&val, (unsigned *)0, cfile); |
35de6c8c | 5480 | } while (*fmt && token == COMMA); |
9a7f6fcd TL |
5481 | |
5482 | if (token != SEMI) { | |
5483 | parse_warn (cfile, "semicolon expected."); | |
f7fdb216 | 5484 | goto parse_exit; |
9a7f6fcd TL |
5485 | } |
5486 | ||
5487 | bp = (struct buffer *)0; | |
5488 | if (!buffer_allocate (&bp, hunkix + nul_term, MDL)) | |
5489 | log_fatal ("no memory to store option declaration."); | |
9a7f6fcd TL |
5490 | memcpy (bp -> data, hunkbuf, hunkix + nul_term); |
5491 | ||
5492 | if (!option_cache_allocate (oc, MDL)) | |
5493 | log_fatal ("out of memory allocating option cache."); | |
5494 | ||
5495 | (*oc) -> data.buffer = bp; | |
5496 | (*oc) -> data.data = &bp -> data [0]; | |
5497 | (*oc) -> data.terminated = nul_term; | |
5498 | (*oc) -> data.len = hunkix; | |
f7fdb216 DH |
5499 | option_reference(&(*oc)->option, option, MDL); |
5500 | option_dereference(&option, MDL); | |
9a7f6fcd | 5501 | return 1; |
f7fdb216 DH |
5502 | |
5503 | parse_exit: | |
98bd7ca0 DH |
5504 | if (express != NULL) |
5505 | expression_dereference(&express, MDL); | |
f7fdb216 DH |
5506 | skip_to_semi (cfile); |
5507 | exit: | |
5508 | option_dereference(&option, MDL); | |
5509 | ||
5510 | return 0; | |
9a7f6fcd TL |
5511 | } |
5512 | ||
5513 | /* Consider merging parse_cshl into this. */ | |
5514 | ||
5515 | int parse_X (cfile, buf, max) | |
5516 | struct parse *cfile; | |
5517 | u_int8_t *buf; | |
5518 | unsigned max; | |
5519 | { | |
5520 | int token; | |
5521 | const char *val; | |
5522 | unsigned len; | |
9a7f6fcd | 5523 | |
b3519f23 | 5524 | token = peek_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
5525 | if (token == NUMBER_OR_NAME || token == NUMBER) { |
5526 | len = 0; | |
5527 | do { | |
b3519f23 | 5528 | token = next_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
5529 | if (token != NUMBER && token != NUMBER_OR_NAME) { |
5530 | parse_warn (cfile, | |
5531 | "expecting hexadecimal constant."); | |
5532 | skip_to_semi (cfile); | |
5533 | return 0; | |
5534 | } | |
5535 | convert_num (cfile, &buf [len], val, 16, 8); | |
5536 | if (len++ > max) { | |
5537 | parse_warn (cfile, | |
5538 | "hexadecimal constant too long."); | |
5539 | skip_to_semi (cfile); | |
5540 | return 0; | |
5541 | } | |
b3519f23 | 5542 | token = peek_token (&val, (unsigned *)0, cfile); |
9a7f6fcd | 5543 | if (token == COLON) |
b3519f23 TL |
5544 | token = next_token (&val, |
5545 | (unsigned *)0, cfile); | |
9a7f6fcd TL |
5546 | } while (token == COLON); |
5547 | val = (char *)buf; | |
5548 | } else if (token == STRING) { | |
dc9d7b08 | 5549 | skip_token(&val, &len, cfile); |
9a7f6fcd TL |
5550 | if (len + 1 > max) { |
5551 | parse_warn (cfile, "string constant too long."); | |
5552 | skip_to_semi (cfile); | |
5553 | return 0; | |
5554 | } | |
5555 | memcpy (buf, val, len + 1); | |
5556 | } else { | |
5557 | parse_warn (cfile, "expecting string or hexadecimal data"); | |
5558 | skip_to_semi (cfile); | |
5559 | return 0; | |
5560 | } | |
5561 | return len; | |
5562 | } | |
5563 | ||
cfdfb9f1 | 5564 | int parse_warn (struct parse *cfile, const char *fmt, ...) |
4bd8800e TL |
5565 | { |
5566 | va_list list; | |
4bd8800e TL |
5567 | char lexbuf [256]; |
5568 | char mbuf [1024]; | |
5569 | char fbuf [1024]; | |
5570 | unsigned i, lix; | |
5571 | ||
5572 | do_percentm (mbuf, fmt); | |
98311e4b DH |
5573 | /* %Audit% This is log output. %2004.06.17,Safe% |
5574 | * If we truncate we hope the user can get a hint from the log. | |
5575 | */ | |
4bd8800e TL |
5576 | snprintf (fbuf, sizeof fbuf, "%s line %d: %s", |
5577 | cfile -> tlname, cfile -> lexline, mbuf); | |
4bd8800e | 5578 | |
cfdfb9f1 | 5579 | va_start (list, fmt); |
4bd8800e TL |
5580 | vsnprintf (mbuf, sizeof mbuf, fbuf, list); |
5581 | va_end (list); | |
5582 | ||
5583 | lix = 0; | |
5584 | for (i = 0; | |
5585 | cfile -> token_line [i] && i < (cfile -> lexchar - 1); i++) { | |
5586 | if (lix < (sizeof lexbuf) - 1) | |
5587 | lexbuf [lix++] = ' '; | |
5588 | if (cfile -> token_line [i] == '\t') { | |
28868515 | 5589 | for (; lix < (sizeof lexbuf) - 1 && (lix & 7); lix++) |
4bd8800e TL |
5590 | lexbuf [lix] = ' '; |
5591 | } | |
5592 | } | |
5593 | lexbuf [lix] = 0; | |
5594 | ||
5595 | #ifndef DEBUG | |
38c4774a SR |
5596 | syslog (LOG_ERR, "%s", mbuf); |
5597 | syslog (LOG_ERR, "%s", cfile -> token_line); | |
4bd8800e | 5598 | if (cfile -> lexchar < 81) |
38c4774a | 5599 | syslog (LOG_ERR, "%s^", lexbuf); |
4bd8800e TL |
5600 | #endif |
5601 | ||
5602 | if (log_perror) { | |
ae566556 SR |
5603 | IGNORE_RET (write (STDERR_FILENO, mbuf, strlen (mbuf))); |
5604 | IGNORE_RET (write (STDERR_FILENO, "\n", 1)); | |
5605 | IGNORE_RET (write (STDERR_FILENO, cfile -> token_line, | |
5606 | strlen (cfile -> token_line))); | |
5607 | IGNORE_RET (write (STDERR_FILENO, "\n", 1)); | |
4bd8800e | 5608 | if (cfile -> lexchar < 81) |
ae566556 SR |
5609 | IGNORE_RET (write (STDERR_FILENO, lexbuf, lix)); |
5610 | IGNORE_RET (write (STDERR_FILENO, "^\n", 2)); | |
4bd8800e TL |
5611 | } |
5612 | ||
5613 | cfile -> warnings_occurred = 1; | |
5614 | ||
5615 | return 0; | |
5616 | } | |
dba5803b DH |
5617 | |
5618 | struct expression * | |
98bd7ca0 | 5619 | parse_domain_list(struct parse *cfile, int compress) |
dba5803b DH |
5620 | { |
5621 | const char *val; | |
5622 | enum dhcp_token token = SEMI; | |
5623 | struct expression *t = NULL; | |
5624 | unsigned len, clen = 0; | |
5625 | int result; | |
5626 | unsigned char compbuf[256 * NS_MAXCDNAME]; | |
5627 | const unsigned char *dnptrs[256], **lastdnptr; | |
5628 | ||
5629 | memset(compbuf, 0, sizeof(compbuf)); | |
5630 | memset(dnptrs, 0, sizeof(dnptrs)); | |
5631 | dnptrs[0] = compbuf; | |
5632 | lastdnptr = &dnptrs[255]; | |
5633 | ||
5634 | do { | |
5635 | /* Consume the COMMA token if peeked. */ | |
5636 | if (token == COMMA) | |
dc9d7b08 | 5637 | skip_token(&val, NULL, cfile); |
dba5803b DH |
5638 | |
5639 | /* Get next (or first) value. */ | |
5640 | token = next_token(&val, &len, cfile); | |
5641 | ||
5642 | if (token != STRING) { | |
5643 | parse_warn(cfile, "Expecting a domain string."); | |
5644 | return NULL; | |
5645 | } | |
5646 | ||
98bd7ca0 DH |
5647 | /* If compression pointers are enabled, compress. If not, |
5648 | * just pack the names in series into the buffer. | |
5649 | */ | |
5650 | if (compress) { | |
5651 | result = MRns_name_compress(val, compbuf + clen, | |
5652 | sizeof(compbuf) - clen, | |
5653 | dnptrs, lastdnptr); | |
5654 | ||
5655 | if (result < 0) { | |
5656 | parse_warn(cfile, "Error compressing domain " | |
5657 | "list: %m"); | |
5658 | return NULL; | |
5659 | } | |
dba5803b | 5660 | |
98bd7ca0 DH |
5661 | clen += result; |
5662 | } else { | |
5663 | result = MRns_name_pton(val, compbuf + clen, | |
5664 | sizeof(compbuf) - clen); | |
5665 | ||
5666 | /* result == 1 means the input was fully qualified. | |
5667 | * result == 0 means the input wasn't. | |
5668 | * result == -1 means bad things. | |
5669 | */ | |
5670 | if (result < 0) { | |
5671 | parse_warn(cfile, "Error assembling domain " | |
5672 | "list: %m"); | |
5673 | return NULL; | |
5674 | } | |
5675 | ||
5676 | /* | |
5677 | * We need to figure out how many bytes to increment | |
5678 | * our buffer pointer since pton doesn't tell us. | |
5679 | */ | |
5680 | while (compbuf[clen] != 0) | |
5681 | clen += compbuf[clen] + 1; | |
5682 | ||
5683 | /* Count the last label (0). */ | |
5684 | clen++; | |
dba5803b DH |
5685 | } |
5686 | ||
98bd7ca0 DH |
5687 | if (clen > sizeof(compbuf)) |
5688 | log_fatal("Impossible error at %s:%d", MDL); | |
dba5803b DH |
5689 | |
5690 | token = peek_token(&val, NULL, cfile); | |
5691 | } while (token == COMMA); | |
5692 | ||
5693 | if (!make_const_data(&t, compbuf, clen, 1, 1, MDL)) | |
5694 | log_fatal("No memory for domain list object."); | |
5695 | ||
5696 | return t; | |
5697 | } | |
5698 |