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63115431 TL |
1 | /* parse.c |
2 | ||
3 | Common parser code for dhcpd and dhclient. */ | |
4 | ||
5 | /* | |
88cd8aca | 6 | * Copyright (c) 2004-2006 by Internet Systems Consortium, Inc. ("ISC") |
98311e4b | 7 | * Copyright (c) 1995-2003 by Internet Software Consortium |
63115431 | 8 | * |
98311e4b DH |
9 | * Permission to use, copy, modify, and distribute this software for any |
10 | * purpose with or without fee is hereby granted, provided that the above | |
11 | * copyright notice and this permission notice appear in all copies. | |
63115431 | 12 | * |
98311e4b DH |
13 | * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES |
14 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
15 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR | |
16 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
17 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT | |
19 | * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
63115431 | 20 | * |
98311e4b DH |
21 | * Internet Systems Consortium, Inc. |
22 | * 950 Charter Street | |
23 | * Redwood City, CA 94063 | |
24 | * <info@isc.org> | |
25 | * http://www.isc.org/ | |
49733f31 | 26 | * |
98311e4b | 27 | * This software has been written for Internet Systems Consortium |
49733f31 | 28 | * by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc. |
98311e4b | 29 | * To learn more about Internet Systems Consortium, see |
49733f31 TL |
30 | * ``http://www.isc.org/''. To learn more about Vixie Enterprises, |
31 | * see ``http://www.vix.com''. To learn more about Nominum, Inc., see | |
32 | * ``http://www.nominum.com''. | |
63115431 TL |
33 | */ |
34 | ||
35 | #ifndef lint | |
36 | static char copyright[] = | |
fe5b0fdd | 37 | "$Id: parse.c,v 1.123 2007/05/19 18:47:14 dhankins Exp $ Copyright (c) 2004-2006 Internet Systems Consortium. All rights reserved.\n"; |
63115431 TL |
38 | #endif /* not lint */ |
39 | ||
40 | #include "dhcpd.h" | |
fe5b0fdd | 41 | #include <syslog.h> |
63115431 | 42 | |
42c6a803 TL |
43 | /* Enumerations can be specified in option formats, and are used for |
44 | parsing, so we define the routines that manage them here. */ | |
45 | ||
46 | struct enumeration *enumerations; | |
47 | ||
48 | void add_enumeration (struct enumeration *enumeration) | |
49 | { | |
50 | enumeration -> next = enumerations; | |
51 | enumerations = enumeration; | |
52 | } | |
53 | ||
54 | struct enumeration *find_enumeration (const char *name, int length) | |
55 | { | |
56 | struct enumeration *e; | |
57 | ||
58 | for (e = enumerations; e; e = e -> next) | |
59 | if (strlen (e -> name) == length && | |
60 | !memcmp (e -> name, name, (unsigned)length)) | |
61 | return e; | |
62 | return (struct enumeration *)0; | |
63 | } | |
64 | ||
65 | struct enumeration_value *find_enumeration_value (const char *name, | |
66 | int length, | |
67 | const char *value) | |
68 | { | |
69 | struct enumeration *e; | |
70 | int i; | |
71 | ||
72 | e = find_enumeration (name, length); | |
73 | if (e) { | |
74 | for (i = 0; e -> values [i].name; i++) { | |
75 | if (!strcmp (value, e -> values [i].name)) | |
76 | return &e -> values [i]; | |
77 | } | |
78 | } | |
79 | return (struct enumeration_value *)0; | |
80 | } | |
81 | ||
63115431 TL |
82 | /* Skip to the semicolon ending the current statement. If we encounter |
83 | braces, the matching closing brace terminates the statement. If we | |
84 | encounter a right brace but haven't encountered a left brace, return | |
85 | leaving the brace in the token buffer for the caller. If we see a | |
86 | semicolon and haven't seen a left brace, return. This lets us skip | |
87 | over: | |
88 | ||
89 | statement; | |
90 | statement foo bar { } | |
91 | statement foo bar { statement { } } | |
92 | statement} | |
93 | ||
94 | ...et cetera. */ | |
95 | ||
96 | void skip_to_semi (cfile) | |
4615d498 | 97 | struct parse *cfile; |
cea8b5c9 TL |
98 | { |
99 | skip_to_rbrace (cfile, 0); | |
100 | } | |
101 | ||
102 | void skip_to_rbrace (cfile, brace_count) | |
4615d498 | 103 | struct parse *cfile; |
cea8b5c9 | 104 | int brace_count; |
63115431 | 105 | { |
02a015fb | 106 | enum dhcp_token token; |
b1b7b521 | 107 | const char *val; |
63115431 | 108 | |
f579f39f TL |
109 | #if defined (DEBUG_TOKEN) |
110 | log_error ("skip_to_rbrace: %d\n", brace_count); | |
111 | #endif | |
63115431 | 112 | do { |
b3519f23 | 113 | token = peek_token (&val, (unsigned *)0, cfile); |
63115431 | 114 | if (token == RBRACE) { |
b3519f23 | 115 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 116 | if (brace_count) { |
63115431 TL |
117 | if (!--brace_count) |
118 | return; | |
119 | } else | |
120 | return; | |
121 | } else if (token == LBRACE) { | |
122 | brace_count++; | |
123 | } else if (token == SEMI && !brace_count) { | |
b3519f23 | 124 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 125 | return; |
796ef008 TL |
126 | } else if (token == EOL) { |
127 | /* EOL only happens when parsing /etc/resolv.conf, | |
128 | and we treat it like a semicolon because the | |
129 | resolv.conf file is line-oriented. */ | |
b3519f23 | 130 | token = next_token (&val, (unsigned *)0, cfile); |
796ef008 | 131 | return; |
63115431 | 132 | } |
b3519f23 | 133 | token = next_token (&val, (unsigned *)0, cfile); |
0b69dcc8 | 134 | } while (token != END_OF_FILE); |
63115431 TL |
135 | } |
136 | ||
137 | int parse_semi (cfile) | |
4615d498 | 138 | struct parse *cfile; |
63115431 | 139 | { |
02a015fb | 140 | enum dhcp_token token; |
b1b7b521 | 141 | const char *val; |
63115431 | 142 | |
b3519f23 | 143 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 144 | if (token != SEMI) { |
4615d498 | 145 | parse_warn (cfile, "semicolon expected."); |
63115431 TL |
146 | skip_to_semi (cfile); |
147 | return 0; | |
148 | } | |
149 | return 1; | |
150 | } | |
151 | ||
152 | /* string-parameter :== STRING SEMI */ | |
153 | ||
b3519f23 | 154 | int parse_string (cfile, sptr, lptr) |
4615d498 | 155 | struct parse *cfile; |
b3519f23 TL |
156 | char **sptr; |
157 | unsigned *lptr; | |
63115431 | 158 | { |
b1b7b521 | 159 | const char *val; |
02a015fb | 160 | enum dhcp_token token; |
63115431 | 161 | char *s; |
b3519f23 | 162 | unsigned len; |
63115431 | 163 | |
b3519f23 | 164 | token = next_token (&val, &len, cfile); |
63115431 | 165 | if (token != STRING) { |
f769d5ac | 166 | parse_warn (cfile, "expecting a string"); |
63115431 | 167 | skip_to_semi (cfile); |
b3519f23 | 168 | return 0; |
63115431 | 169 | } |
b3519f23 | 170 | s = (char *)dmalloc (len + 1, MDL); |
63115431 | 171 | if (!s) |
8ae2d595 | 172 | log_fatal ("no memory for string %s.", val); |
b3519f23 | 173 | memcpy (s, val, len + 1); |
63115431 | 174 | |
b3519f23 TL |
175 | if (!parse_semi (cfile)) { |
176 | dfree (s, MDL); | |
177 | return 0; | |
178 | } | |
179 | if (sptr) | |
180 | *sptr = s; | |
181 | else | |
182 | dfree (s, MDL); | |
183 | if (lptr) | |
184 | *lptr = len; | |
185 | return 1; | |
63115431 TL |
186 | } |
187 | ||
be6be08d TL |
188 | /* |
189 | * hostname :== IDENTIFIER | |
190 | * | IDENTIFIER DOT | |
191 | * | hostname DOT IDENTIFIER | |
192 | */ | |
796ef008 TL |
193 | |
194 | char *parse_host_name (cfile) | |
4615d498 | 195 | struct parse *cfile; |
796ef008 | 196 | { |
b1b7b521 | 197 | const char *val; |
02a015fb | 198 | enum dhcp_token token; |
b1b7b521 | 199 | unsigned len = 0; |
796ef008 TL |
200 | char *s; |
201 | char *t; | |
202 | pair c = (pair)0; | |
88ab5737 | 203 | int ltid = 0; |
796ef008 TL |
204 | |
205 | /* Read a dotted hostname... */ | |
206 | do { | |
207 | /* Read a token, which should be an identifier. */ | |
b3519f23 | 208 | token = peek_token (&val, (unsigned *)0, cfile); |
68dda014 TL |
209 | if (!is_identifier (token) && token != NUMBER) |
210 | break; | |
b3519f23 | 211 | token = next_token (&val, (unsigned *)0, cfile); |
68dda014 | 212 | |
796ef008 | 213 | /* Store this identifier... */ |
fdac15d9 | 214 | if (!(s = (char *)dmalloc (strlen (val) + 1, MDL))) |
8ae2d595 | 215 | log_fatal ("can't allocate temp space for hostname."); |
796ef008 TL |
216 | strcpy (s, val); |
217 | c = cons ((caddr_t)s, c); | |
218 | len += strlen (s) + 1; | |
219 | /* Look for a dot; if it's there, keep going, otherwise | |
220 | we're done. */ | |
b3519f23 | 221 | token = peek_token (&val, (unsigned *)0, cfile); |
88ab5737 | 222 | if (token == DOT) { |
b3519f23 | 223 | token = next_token (&val, (unsigned *)0, cfile); |
88ab5737 TL |
224 | ltid = 1; |
225 | } else | |
226 | ltid = 0; | |
796ef008 TL |
227 | } while (token == DOT); |
228 | ||
fa392aea TL |
229 | /* Should be at least one token. */ |
230 | if (!len) | |
231 | return (char *)0; | |
232 | ||
796ef008 | 233 | /* Assemble the hostname together into a string. */ |
88ab5737 | 234 | if (!(s = (char *)dmalloc (len + ltid, MDL))) |
8ae2d595 | 235 | log_fatal ("can't allocate space for hostname."); |
88ab5737 | 236 | t = s + len + ltid; |
796ef008 | 237 | *--t = 0; |
88ab5737 TL |
238 | if (ltid) |
239 | *--t = '.'; | |
796ef008 TL |
240 | while (c) { |
241 | pair cdr = c -> cdr; | |
b1b7b521 | 242 | unsigned l = strlen ((char *)(c -> car)); |
796ef008 TL |
243 | t -= l; |
244 | memcpy (t, (char *)(c -> car), l); | |
245 | /* Free up temp space. */ | |
fdac15d9 TL |
246 | dfree (c -> car, MDL); |
247 | dfree (c, MDL); | |
796ef008 TL |
248 | c = cdr; |
249 | if (t != s) | |
250 | *--t = '.'; | |
251 | } | |
252 | return s; | |
253 | } | |
254 | ||
be6be08d TL |
255 | /* ip-addr-or-hostname :== ip-address | hostname |
256 | ip-address :== NUMBER DOT NUMBER DOT NUMBER DOT NUMBER | |
257 | ||
258 | Parse an ip address or a hostname. If uniform is zero, put in | |
259 | an expr_substring node to limit hostnames that evaluate to more | |
260 | than one IP address. */ | |
261 | ||
02a015fb TL |
262 | int parse_ip_addr_or_hostname (expr, cfile, uniform) |
263 | struct expression **expr; | |
4615d498 | 264 | struct parse *cfile; |
be6be08d TL |
265 | int uniform; |
266 | { | |
b1b7b521 | 267 | const char *val; |
02a015fb | 268 | enum dhcp_token token; |
be6be08d | 269 | unsigned char addr [4]; |
b1b7b521 | 270 | unsigned len = sizeof addr; |
be6be08d | 271 | char *name; |
02a015fb | 272 | struct expression *x = (struct expression *)0; |
be6be08d | 273 | |
b3519f23 | 274 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
275 | if (is_identifier (token)) { |
276 | name = parse_host_name (cfile); | |
277 | if (!name) | |
02a015fb | 278 | return 0; |
98311e4b DH |
279 | if (!make_host_lookup (expr, name)) { |
280 | dfree(name, MDL); | |
02a015fb | 281 | return 0; |
98311e4b DH |
282 | } |
283 | dfree(name, MDL); | |
02a015fb TL |
284 | if (!uniform) { |
285 | if (!make_limit (&x, *expr, 4)) | |
286 | return 0; | |
4bd8800e | 287 | expression_dereference (expr, MDL); |
02a015fb TL |
288 | *expr = x; |
289 | } | |
be6be08d TL |
290 | } else if (token == NUMBER) { |
291 | if (!parse_numeric_aggregate (cfile, addr, &len, DOT, 10, 8)) | |
02a015fb | 292 | return 0; |
d758ad8c | 293 | return make_const_data (expr, addr, len, 0, 1, MDL); |
be6be08d TL |
294 | } else { |
295 | if (token != RBRACE && token != LBRACE) | |
b3519f23 | 296 | token = next_token (&val, (unsigned *)0, cfile); |
4615d498 | 297 | parse_warn (cfile, "%s (%d): expecting IP address or hostname", |
be6be08d TL |
298 | val, token); |
299 | if (token != SEMI) | |
300 | skip_to_semi (cfile); | |
02a015fb | 301 | return 0; |
be6be08d TL |
302 | } |
303 | ||
02a015fb | 304 | return 1; |
be6be08d TL |
305 | } |
306 | ||
307 | /* | |
308 | * ip-address :== NUMBER DOT NUMBER DOT NUMBER DOT NUMBER | |
309 | */ | |
310 | ||
796ef008 | 311 | int parse_ip_addr (cfile, addr) |
4615d498 | 312 | struct parse *cfile; |
796ef008 TL |
313 | struct iaddr *addr; |
314 | { | |
b1b7b521 | 315 | const char *val; |
02a015fb | 316 | enum dhcp_token token; |
796ef008 TL |
317 | |
318 | addr -> len = 4; | |
319 | if (parse_numeric_aggregate (cfile, addr -> iabuf, | |
320 | &addr -> len, DOT, 10, 8)) | |
321 | return 1; | |
322 | return 0; | |
323 | } | |
324 | ||
98bd7ca0 DH |
325 | /* |
326 | * Return true if every character in the string is hexidecimal. | |
327 | */ | |
328 | static int | |
329 | is_hex_string(const char *s) { | |
330 | while (*s != '\0') { | |
331 | if (!isxdigit(*s)) { | |
332 | return 0; | |
333 | } | |
334 | s++; | |
335 | } | |
336 | return 1; | |
337 | } | |
338 | ||
339 | /* | |
340 | * ip-address6 :== (complicated set of rules) | |
341 | * | |
342 | * See section 2.2 of RFC 1884 for details. | |
343 | * | |
344 | * We are lazy for this. We pull numbers, names, colons, and dots | |
345 | * together and then throw the resulting string at the inet_pton() | |
346 | * function. | |
347 | */ | |
348 | ||
349 | int | |
350 | parse_ip6_addr(struct parse *cfile, struct iaddr *addr) { | |
351 | enum dhcp_token token; | |
352 | const char *val; | |
353 | int val_len; | |
354 | ||
355 | char v6[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")]; | |
356 | int v6_len; | |
357 | ||
358 | v6_len = 0; | |
359 | for (;;) { | |
360 | token = peek_token(&val, NULL, cfile); | |
361 | if ((((token == NAME) || (token == NUMBER_OR_NAME)) && | |
362 | is_hex_string(val)) || | |
363 | (token == NUMBER) || | |
364 | (token == DOT) || | |
365 | (token == COLON)) { | |
366 | ||
367 | next_token(&val, NULL, cfile); | |
368 | val_len = strlen(val); | |
369 | if ((v6_len + val_len) >= sizeof(v6)) { | |
370 | parse_warn(cfile, "Invalid IPv6 address."); | |
371 | skip_to_semi(cfile); | |
372 | return 0; | |
373 | } | |
374 | memcpy(v6+v6_len, val, val_len); | |
375 | v6_len += val_len; | |
376 | ||
377 | } else { | |
378 | break; | |
379 | } | |
380 | } | |
381 | v6[v6_len] = '\0'; | |
382 | ||
383 | if (inet_pton(AF_INET6, v6, addr->iabuf) <= 0) { | |
384 | parse_warn(cfile, "Invalid IPv6 address."); | |
385 | skip_to_semi(cfile); | |
386 | return 0; | |
387 | } | |
388 | addr->len = 16; | |
389 | return 1; | |
390 | } | |
391 | ||
392 | /* | |
393 | * Same as parse_ip6_addr() above, but returns the value in the | |
394 | * expression rather than in an address structure. | |
395 | */ | |
396 | int | |
397 | parse_ip6_addr_expr(struct expression **expr, | |
398 | struct parse *cfile) { | |
399 | struct iaddr addr; | |
400 | ||
401 | if (!parse_ip6_addr(cfile, &addr)) { | |
402 | return 0; | |
403 | } | |
404 | return make_const_data(expr, addr.iabuf, addr.len, 0, 1, MDL); | |
405 | } | |
406 | ||
febbd402 DH |
407 | /* |
408 | * ip-address-with-subnet :== ip-address | | |
409 | * ip-address "/" NUMBER | |
410 | */ | |
411 | ||
412 | int | |
413 | parse_ip_addr_with_subnet(cfile, match) | |
414 | struct parse *cfile; | |
415 | struct iaddrmatch *match; | |
416 | { | |
417 | const char *val, *orig; | |
418 | enum dhcp_token token; | |
419 | int prefixlen; | |
420 | int fflen; | |
421 | unsigned char newval, warnmask=0; | |
422 | ||
423 | if (parse_ip_addr(cfile, &match->addr)) { | |
424 | /* default to host mask */ | |
425 | prefixlen = match->addr.len * 8; | |
426 | ||
427 | token = peek_token(&val, NULL, cfile); | |
428 | ||
429 | if (token == SLASH) { | |
430 | next_token(&val, NULL, cfile); | |
431 | token = next_token(&val, NULL, cfile); | |
432 | ||
433 | if (token != NUMBER) { | |
434 | parse_warn(cfile, "Invalid CIDR prefix length:" | |
435 | " expecting a number."); | |
436 | return 0; | |
437 | } | |
438 | ||
439 | prefixlen = atoi(val); | |
440 | ||
441 | if (prefixlen < 0 || | |
442 | prefixlen > (match->addr.len * 8)) { | |
443 | parse_warn(cfile, "subnet prefix is out of " | |
444 | "range [0..%d].", | |
445 | match->addr.len * 8); | |
446 | return 0; | |
447 | } | |
448 | } | |
449 | ||
450 | /* construct a suitable mask field */ | |
451 | ||
452 | /* copy length */ | |
453 | match->mask.len = match->addr.len; | |
454 | ||
455 | /* count of 0xff bytes in mask */ | |
456 | fflen = prefixlen / 8; | |
457 | ||
458 | /* set leading mask */ | |
459 | memset(match->mask.iabuf, 0xff, fflen); | |
460 | ||
461 | /* set zeroes */ | |
462 | if (fflen < match->mask.len) { | |
463 | match->mask.iabuf[fflen] = | |
464 | "\x00\x80\xc0\xe0\xf0\xf8\xfc\xfe"[prefixlen % 8]; | |
465 | ||
466 | memset(match->mask.iabuf+fflen+1, 0x00, | |
467 | match->mask.len - fflen - 1); | |
468 | ||
469 | /* AND-out insignificant bits from supplied netmask. */ | |
470 | orig = piaddr(match->addr); | |
471 | do { | |
472 | newval = match->addr.iabuf[fflen] & | |
473 | match->mask.iabuf[fflen]; | |
474 | ||
475 | if (newval != match->addr.iabuf[fflen]) { | |
476 | warnmask = 1; | |
477 | match->addr.iabuf[fflen] = newval; | |
478 | } | |
479 | } while (++fflen < match->mask.len); | |
480 | ||
481 | if (warnmask) { | |
482 | log_error("Warning: Extraneous bits removed " | |
483 | "in address component of %s/%d.", | |
484 | orig, prefixlen); | |
485 | log_error("New value: %s/%d.", | |
486 | piaddr(match->addr), prefixlen); | |
487 | } | |
488 | } | |
489 | ||
490 | return 1; | |
491 | } | |
492 | ||
493 | parse_warn(cfile, | |
494 | "expecting ip-address or ip-address/prefixlen"); | |
495 | ||
496 | return 0; /* let caller pick up pieces */ | |
497 | } | |
498 | ||
be6be08d | 499 | /* |
c57db45c | 500 | * hardware-parameter :== HARDWARE hardware-type colon-separated-hex-list SEMI |
98311e4b | 501 | * hardware-type :== ETHERNET | TOKEN_RING | FDDI |
be6be08d | 502 | */ |
63115431 TL |
503 | |
504 | void parse_hardware_param (cfile, hardware) | |
4615d498 | 505 | struct parse *cfile; |
63115431 TL |
506 | struct hardware *hardware; |
507 | { | |
b1b7b521 | 508 | const char *val; |
02a015fb | 509 | enum dhcp_token token; |
e703795d | 510 | unsigned hlen; |
63115431 TL |
511 | unsigned char *t; |
512 | ||
b3519f23 | 513 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 TL |
514 | switch (token) { |
515 | case ETHERNET: | |
9fb2fb28 | 516 | hardware -> hbuf [0] = HTYPE_ETHER; |
63115431 TL |
517 | break; |
518 | case TOKEN_RING: | |
9fb2fb28 | 519 | hardware -> hbuf [0] = HTYPE_IEEE802; |
63115431 | 520 | break; |
cea8b5c9 | 521 | case FDDI: |
9fb2fb28 | 522 | hardware -> hbuf [0] = HTYPE_FDDI; |
cea8b5c9 | 523 | break; |
63115431 | 524 | default: |
7d452841 | 525 | if (!strncmp (val, "unknown-", 8)) { |
9007657d | 526 | hardware -> hbuf [0] = atoi (&val [8]); |
7d452841 TL |
527 | } else { |
528 | parse_warn (cfile, | |
529 | "expecting a network hardware type"); | |
530 | skip_to_semi (cfile); | |
531 | ||
532 | return; | |
533 | } | |
63115431 TL |
534 | } |
535 | ||
536 | /* Parse the hardware address information. Technically, | |
537 | it would make a lot of sense to restrict the length of the | |
538 | data we'll accept here to the length of a particular hardware | |
539 | address type. Unfortunately, there are some broken clients | |
540 | out there that put bogus data in the chaddr buffer, and we accept | |
541 | that data in the lease file rather than simply failing on such | |
542 | clients. Yuck. */ | |
543 | hlen = 0; | |
b3519f23 | 544 | token = peek_token (&val, (unsigned *)0, cfile); |
1898dcf7 TL |
545 | if (token == SEMI) { |
546 | hardware -> hlen = 1; | |
547 | goto out; | |
548 | } | |
63115431 TL |
549 | t = parse_numeric_aggregate (cfile, (unsigned char *)0, &hlen, |
550 | COLON, 16, 8); | |
1898dcf7 TL |
551 | if (!t) { |
552 | hardware -> hlen = 1; | |
63115431 | 553 | return; |
1898dcf7 | 554 | } |
9fb2fb28 | 555 | if (hlen + 1 > sizeof hardware -> hbuf) { |
fdac15d9 | 556 | dfree (t, MDL); |
4615d498 | 557 | parse_warn (cfile, "hardware address too long"); |
63115431 | 558 | } else { |
9fb2fb28 TL |
559 | hardware -> hlen = hlen + 1; |
560 | memcpy ((unsigned char *)&hardware -> hbuf [1], t, hlen); | |
561 | if (hlen + 1 < sizeof hardware -> hbuf) | |
562 | memset (&hardware -> hbuf [hlen + 1], 0, | |
563 | (sizeof hardware -> hbuf) - hlen - 1); | |
fdac15d9 | 564 | dfree (t, MDL); |
63115431 TL |
565 | } |
566 | ||
1898dcf7 | 567 | out: |
b3519f23 | 568 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 569 | if (token != SEMI) { |
4615d498 | 570 | parse_warn (cfile, "expecting semicolon."); |
63115431 TL |
571 | skip_to_semi (cfile); |
572 | } | |
573 | } | |
574 | ||
575 | /* lease-time :== NUMBER SEMI */ | |
576 | ||
577 | void parse_lease_time (cfile, timep) | |
4615d498 | 578 | struct parse *cfile; |
63115431 TL |
579 | TIME *timep; |
580 | { | |
b1b7b521 | 581 | const char *val; |
02a015fb | 582 | enum dhcp_token token; |
88cd8aca | 583 | u_int32_t num; |
63115431 | 584 | |
b3519f23 | 585 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 586 | if (token != NUMBER) { |
4615d498 | 587 | parse_warn (cfile, "Expecting numeric lease time"); |
63115431 TL |
588 | skip_to_semi (cfile); |
589 | return; | |
590 | } | |
88cd8aca | 591 | convert_num(cfile, (unsigned char *)&num, val, 10, 32); |
63115431 | 592 | /* Unswap the number - convert_num returns stuff in NBO. */ |
88cd8aca | 593 | *timep = ntohl(num); |
63115431 TL |
594 | |
595 | parse_semi (cfile); | |
596 | } | |
597 | ||
598 | /* No BNF for numeric aggregates - that's defined by the caller. What | |
c57db45c SK |
599 | this function does is to parse a sequence of numbers separated by |
600 | the token specified in separator. If max is zero, any number of | |
63115431 TL |
601 | numbers will be parsed; otherwise, exactly max numbers are |
602 | expected. Base and size tell us how to internalize the numbers | |
603 | once they've been tokenized. */ | |
604 | ||
605 | unsigned char *parse_numeric_aggregate (cfile, buf, | |
c57db45c | 606 | max, separator, base, size) |
4615d498 | 607 | struct parse *cfile; |
63115431 | 608 | unsigned char *buf; |
b1b7b521 | 609 | unsigned *max; |
c57db45c | 610 | int separator; |
63115431 | 611 | int base; |
b1b7b521 | 612 | unsigned size; |
63115431 | 613 | { |
b1b7b521 | 614 | const char *val; |
02a015fb | 615 | enum dhcp_token token; |
63115431 | 616 | unsigned char *bufp = buf, *s, *t; |
b1b7b521 | 617 | unsigned count = 0; |
63115431 TL |
618 | pair c = (pair)0; |
619 | ||
620 | if (!bufp && *max) { | |
fdac15d9 | 621 | bufp = (unsigned char *)dmalloc (*max * size / 8, MDL); |
63115431 | 622 | if (!bufp) |
1ff8f8ea TL |
623 | log_fatal ("no space for numeric aggregate"); |
624 | s = 0; | |
63115431 TL |
625 | } else |
626 | s = bufp; | |
627 | ||
628 | do { | |
629 | if (count) { | |
b3519f23 | 630 | token = peek_token (&val, (unsigned *)0, cfile); |
c57db45c | 631 | if (token != separator) { |
63115431 TL |
632 | if (!*max) |
633 | break; | |
634 | if (token != RBRACE && token != LBRACE) | |
b3519f23 TL |
635 | token = next_token (&val, |
636 | (unsigned *)0, | |
637 | cfile); | |
4615d498 | 638 | parse_warn (cfile, "too few numbers."); |
63115431 TL |
639 | if (token != SEMI) |
640 | skip_to_semi (cfile); | |
641 | return (unsigned char *)0; | |
642 | } | |
b3519f23 | 643 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 644 | } |
b3519f23 | 645 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 646 | |
0b69dcc8 | 647 | if (token == END_OF_FILE) { |
4615d498 | 648 | parse_warn (cfile, "unexpected end of file"); |
63115431 TL |
649 | break; |
650 | } | |
651 | ||
652 | /* Allow NUMBER_OR_NAME if base is 16. */ | |
653 | if (token != NUMBER && | |
654 | (base != 16 || token != NUMBER_OR_NAME)) { | |
4615d498 | 655 | parse_warn (cfile, "expecting numeric value."); |
63115431 TL |
656 | skip_to_semi (cfile); |
657 | return (unsigned char *)0; | |
658 | } | |
659 | /* If we can, convert the number now; otherwise, build | |
660 | a linked list of all the numbers. */ | |
661 | if (s) { | |
4615d498 | 662 | convert_num (cfile, s, val, base, size); |
63115431 TL |
663 | s += size / 8; |
664 | } else { | |
fdac15d9 | 665 | t = (unsigned char *)dmalloc (strlen (val) + 1, MDL); |
63115431 | 666 | if (!t) |
8ae2d595 | 667 | log_fatal ("no temp space for number."); |
338303a4 TL |
668 | strcpy ((char *)t, val); |
669 | c = cons ((caddr_t)t, c); | |
63115431 TL |
670 | } |
671 | } while (++count != *max); | |
672 | ||
673 | /* If we had to cons up a list, convert it now. */ | |
674 | if (c) { | |
fdac15d9 | 675 | bufp = (unsigned char *)dmalloc (count * size / 8, MDL); |
63115431 | 676 | if (!bufp) |
1ff8f8ea | 677 | log_fatal ("no space for numeric aggregate."); |
63115431 TL |
678 | s = bufp + count - size / 8; |
679 | *max = count; | |
680 | } | |
681 | while (c) { | |
682 | pair cdr = c -> cdr; | |
4615d498 | 683 | convert_num (cfile, s, (char *)(c -> car), base, size); |
63115431 TL |
684 | s -= size / 8; |
685 | /* Free up temp space. */ | |
fdac15d9 TL |
686 | dfree (c -> car, MDL); |
687 | dfree (c, MDL); | |
63115431 TL |
688 | c = cdr; |
689 | } | |
690 | return bufp; | |
691 | } | |
692 | ||
4615d498 TL |
693 | void convert_num (cfile, buf, str, base, size) |
694 | struct parse *cfile; | |
63115431 | 695 | unsigned char *buf; |
b1b7b521 | 696 | const char *str; |
63115431 | 697 | int base; |
b1b7b521 | 698 | unsigned size; |
63115431 | 699 | { |
b1b7b521 | 700 | const char *ptr = str; |
63115431 TL |
701 | int negative = 0; |
702 | u_int32_t val = 0; | |
703 | int tval; | |
704 | int max; | |
705 | ||
706 | if (*ptr == '-') { | |
707 | negative = 1; | |
708 | ++ptr; | |
709 | } | |
710 | ||
711 | /* If base wasn't specified, figure it out from the data. */ | |
712 | if (!base) { | |
713 | if (ptr [0] == '0') { | |
714 | if (ptr [1] == 'x') { | |
715 | base = 16; | |
716 | ptr += 2; | |
717 | } else if (isascii (ptr [1]) && isdigit (ptr [1])) { | |
718 | base = 8; | |
719 | ptr += 1; | |
720 | } else { | |
721 | base = 10; | |
722 | } | |
723 | } else { | |
724 | base = 10; | |
725 | } | |
726 | } | |
727 | ||
728 | do { | |
729 | tval = *ptr++; | |
730 | /* XXX assumes ASCII... */ | |
731 | if (tval >= 'a') | |
732 | tval = tval - 'a' + 10; | |
733 | else if (tval >= 'A') | |
734 | tval = tval - 'A' + 10; | |
735 | else if (tval >= '0') | |
736 | tval -= '0'; | |
737 | else { | |
4615d498 | 738 | parse_warn (cfile, "Bogus number: %s.", str); |
63115431 TL |
739 | break; |
740 | } | |
741 | if (tval >= base) { | |
4615d498 TL |
742 | parse_warn (cfile, |
743 | "Bogus number %s: digit %d not in base %d", | |
f420e08c | 744 | str, tval, base); |
63115431 TL |
745 | break; |
746 | } | |
747 | val = val * base + tval; | |
748 | } while (*ptr); | |
749 | ||
750 | if (negative) | |
751 | max = (1 << (size - 1)); | |
752 | else | |
753 | max = (1 << (size - 1)) + ((1 << (size - 1)) - 1); | |
754 | if (val > max) { | |
755 | switch (base) { | |
756 | case 8: | |
4615d498 | 757 | parse_warn (cfile, |
06afba54 | 758 | "%s%lo exceeds max (%d) for precision.", |
b3d594dd TL |
759 | negative ? "-" : "", |
760 | (unsigned long)val, max); | |
63115431 TL |
761 | break; |
762 | case 16: | |
4615d498 | 763 | parse_warn (cfile, |
06afba54 | 764 | "%s%lx exceeds max (%d) for precision.", |
b3d594dd TL |
765 | negative ? "-" : "", |
766 | (unsigned long)val, max); | |
63115431 TL |
767 | break; |
768 | default: | |
4615d498 | 769 | parse_warn (cfile, |
06afba54 | 770 | "%s%lu exceeds max (%d) for precision.", |
b3d594dd TL |
771 | negative ? "-" : "", |
772 | (unsigned long)val, max); | |
63115431 TL |
773 | break; |
774 | } | |
775 | } | |
776 | ||
777 | if (negative) { | |
778 | switch (size) { | |
779 | case 8: | |
780 | *buf = -(unsigned long)val; | |
781 | break; | |
782 | case 16: | |
b1b7b521 | 783 | putShort (buf, -(long)val); |
63115431 TL |
784 | break; |
785 | case 32: | |
b1b7b521 | 786 | putLong (buf, -(long)val); |
63115431 TL |
787 | break; |
788 | default: | |
4615d498 TL |
789 | parse_warn (cfile, |
790 | "Unexpected integer size: %d\n", size); | |
63115431 TL |
791 | break; |
792 | } | |
793 | } else { | |
794 | switch (size) { | |
795 | case 8: | |
796 | *buf = (u_int8_t)val; | |
797 | break; | |
798 | case 16: | |
799 | putUShort (buf, (u_int16_t)val); | |
800 | break; | |
801 | case 32: | |
802 | putULong (buf, val); | |
803 | break; | |
804 | default: | |
4615d498 TL |
805 | parse_warn (cfile, |
806 | "Unexpected integer size: %d\n", size); | |
63115431 TL |
807 | break; |
808 | } | |
809 | } | |
810 | } | |
811 | ||
be6be08d TL |
812 | /* |
813 | * date :== NUMBER NUMBER SLASH NUMBER SLASH NUMBER | |
a82abfc7 TL |
814 | * NUMBER COLON NUMBER COLON NUMBER SEMI | |
815 | * NUMBER NUMBER SLASH NUMBER SLASH NUMBER | |
816 | * NUMBER COLON NUMBER COLON NUMBER NUMBER SEMI | | |
be1ee858 | 817 | * NEVER |
be6be08d | 818 | * |
a82abfc7 TL |
819 | * Dates are stored in GMT or with a timezone offset; first number is day |
820 | * of week; next is year/month/day; next is hours:minutes:seconds on a | |
821 | * 24-hour clock, followed by the timezone offset in seconds, which is | |
822 | * optional. | |
be6be08d | 823 | */ |
63115431 TL |
824 | |
825 | TIME parse_date (cfile) | |
4615d498 | 826 | struct parse *cfile; |
63115431 TL |
827 | { |
828 | struct tm tm; | |
829 | int guess; | |
a82abfc7 | 830 | int tzoff, wday, year, mon, mday, hour, min, sec; |
b1b7b521 | 831 | const char *val; |
02a015fb | 832 | enum dhcp_token token; |
63115431 TL |
833 | static int months [11] = { 31, 59, 90, 120, 151, 181, |
834 | 212, 243, 273, 304, 334 }; | |
835 | ||
be1ee858 | 836 | /* Day of week, or "never"... */ |
b3519f23 | 837 | token = next_token (&val, (unsigned *)0, cfile); |
be1ee858 TL |
838 | if (token == NEVER) { |
839 | if (!parse_semi (cfile)) | |
840 | return 0; | |
841 | return MAX_TIME; | |
842 | } | |
843 | ||
5e864416 DH |
844 | /* This indicates 'local' time format. */ |
845 | if (token == EPOCH) { | |
846 | token = next_token(&val, NULL, cfile); | |
847 | ||
848 | if (token != NUMBER) { | |
849 | parse_warn(cfile, "Seconds since epoch expected."); | |
850 | if (token != SEMI) | |
851 | skip_to_semi(cfile); | |
852 | return (TIME)0; | |
853 | } | |
854 | ||
855 | guess = atoi(val); | |
856 | ||
857 | if (!parse_semi(cfile)) | |
858 | return (TIME)0; | |
859 | ||
860 | return guess; | |
861 | } | |
862 | ||
63115431 | 863 | if (token != NUMBER) { |
4615d498 | 864 | parse_warn (cfile, "numeric day of week expected."); |
63115431 TL |
865 | if (token != SEMI) |
866 | skip_to_semi (cfile); | |
867 | return (TIME)0; | |
868 | } | |
a82abfc7 | 869 | wday = atoi (val); |
63115431 TL |
870 | |
871 | /* Year... */ | |
b3519f23 | 872 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 873 | if (token != NUMBER) { |
4615d498 | 874 | parse_warn (cfile, "numeric year expected."); |
63115431 TL |
875 | if (token != SEMI) |
876 | skip_to_semi (cfile); | |
877 | return (TIME)0; | |
878 | } | |
edca2b1a TL |
879 | |
880 | /* Note: the following is not a Y2K bug - it's a Y1.9K bug. Until | |
881 | somebody invents a time machine, I think we can safely disregard | |
882 | it. This actually works around a stupid Y2K bug that was present | |
883 | in a very early beta release of dhcpd. */ | |
a82abfc7 TL |
884 | year = atoi (val); |
885 | if (year > 1900) | |
886 | year -= 1900; | |
63115431 | 887 | |
c57db45c | 888 | /* Slash separating year from month... */ |
b3519f23 | 889 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 890 | if (token != SLASH) { |
4615d498 | 891 | parse_warn (cfile, |
c57db45c | 892 | "expected slash separating year from month."); |
63115431 TL |
893 | if (token != SEMI) |
894 | skip_to_semi (cfile); | |
895 | return (TIME)0; | |
896 | } | |
897 | ||
898 | /* Month... */ | |
b3519f23 | 899 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 900 | if (token != NUMBER) { |
4615d498 | 901 | parse_warn (cfile, "numeric month expected."); |
63115431 TL |
902 | if (token != SEMI) |
903 | skip_to_semi (cfile); | |
904 | return (TIME)0; | |
905 | } | |
a82abfc7 | 906 | mon = atoi (val) - 1; |
63115431 | 907 | |
c57db45c | 908 | /* Slash separating month from day... */ |
b3519f23 | 909 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 910 | if (token != SLASH) { |
4615d498 | 911 | parse_warn (cfile, |
c57db45c | 912 | "expected slash separating month from day."); |
63115431 TL |
913 | if (token != SEMI) |
914 | skip_to_semi (cfile); | |
915 | return (TIME)0; | |
916 | } | |
917 | ||
98311e4b | 918 | /* Day of month... */ |
b3519f23 | 919 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 920 | if (token != NUMBER) { |
4615d498 | 921 | parse_warn (cfile, "numeric day of month expected."); |
63115431 TL |
922 | if (token != SEMI) |
923 | skip_to_semi (cfile); | |
924 | return (TIME)0; | |
925 | } | |
a82abfc7 | 926 | mday = atoi (val); |
63115431 TL |
927 | |
928 | /* Hour... */ | |
b3519f23 | 929 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 930 | if (token != NUMBER) { |
4615d498 | 931 | parse_warn (cfile, "numeric hour expected."); |
63115431 TL |
932 | if (token != SEMI) |
933 | skip_to_semi (cfile); | |
934 | return (TIME)0; | |
935 | } | |
a82abfc7 | 936 | hour = atoi (val); |
63115431 | 937 | |
c57db45c | 938 | /* Colon separating hour from minute... */ |
b3519f23 | 939 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 940 | if (token != COLON) { |
4615d498 | 941 | parse_warn (cfile, |
c57db45c | 942 | "expected colon separating hour from minute."); |
63115431 TL |
943 | if (token != SEMI) |
944 | skip_to_semi (cfile); | |
945 | return (TIME)0; | |
946 | } | |
947 | ||
948 | /* Minute... */ | |
b3519f23 | 949 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 950 | if (token != NUMBER) { |
4615d498 | 951 | parse_warn (cfile, "numeric minute expected."); |
63115431 TL |
952 | if (token != SEMI) |
953 | skip_to_semi (cfile); | |
954 | return (TIME)0; | |
955 | } | |
a82abfc7 | 956 | min = atoi (val); |
63115431 | 957 | |
c57db45c | 958 | /* Colon separating minute from second... */ |
b3519f23 | 959 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 960 | if (token != COLON) { |
4615d498 | 961 | parse_warn (cfile, |
67674ffb | 962 | "expected colon separating minute from second."); |
63115431 TL |
963 | if (token != SEMI) |
964 | skip_to_semi (cfile); | |
965 | return (TIME)0; | |
966 | } | |
967 | ||
67674ffb | 968 | /* Second... */ |
b3519f23 | 969 | token = next_token (&val, (unsigned *)0, cfile); |
63115431 | 970 | if (token != NUMBER) { |
67674ffb | 971 | parse_warn (cfile, "numeric second expected."); |
63115431 TL |
972 | if (token != SEMI) |
973 | skip_to_semi (cfile); | |
974 | return (TIME)0; | |
975 | } | |
a82abfc7 | 976 | sec = atoi (val); |
63115431 | 977 | |
b3519f23 | 978 | token = peek_token (&val, (unsigned *)0, cfile); |
a82abfc7 | 979 | if (token == NUMBER) { |
b3519f23 | 980 | token = next_token (&val, (unsigned *)0, cfile); |
a82abfc7 TL |
981 | tzoff = atoi (val); |
982 | } else | |
983 | tzoff = 0; | |
63115431 TL |
984 | |
985 | /* Make sure the date ends in a semicolon... */ | |
25541f2f | 986 | if (!parse_semi (cfile)) |
63115431 | 987 | return 0; |
63115431 TL |
988 | |
989 | /* Guess the time value... */ | |
a82abfc7 TL |
990 | guess = ((((((365 * (year - 70) + /* Days in years since '70 */ |
991 | (year - 69) / 4 + /* Leap days since '70 */ | |
992 | (mon /* Days in months this year */ | |
993 | ? months [mon - 1] | |
63115431 | 994 | : 0) + |
a82abfc7 TL |
995 | (mon > 1 && /* Leap day this year */ |
996 | !((year - 72) & 3)) + | |
997 | mday - 1) * 24) + /* Day of month */ | |
998 | hour) * 60) + | |
999 | min) * 60) + sec + tzoff; | |
63115431 TL |
1000 | |
1001 | /* This guess could be wrong because of leap seconds or other | |
1002 | weirdness we don't know about that the system does. For | |
1003 | now, we're just going to accept the guess, but at some point | |
1004 | it might be nice to do a successive approximation here to | |
1005 | get an exact value. Even if the error is small, if the | |
1006 | server is restarted frequently (and thus the lease database | |
1007 | is reread), the error could accumulate into something | |
1008 | significant. */ | |
1009 | ||
1010 | return guess; | |
1011 | } | |
4761e04b | 1012 | |
be6be08d TL |
1013 | /* |
1014 | * option-name :== IDENTIFIER | | |
1015 | IDENTIFIER . IDENTIFIER | |
1016 | */ | |
1017 | ||
f7fdb216 DH |
1018 | isc_result_t |
1019 | parse_option_name (cfile, allocate, known, opt) | |
4615d498 | 1020 | struct parse *cfile; |
6b4b0ec7 | 1021 | int allocate; |
b1b7b521 | 1022 | int *known; |
f7fdb216 | 1023 | struct option **opt; |
4761e04b | 1024 | { |
b1b7b521 | 1025 | const char *val; |
02a015fb | 1026 | enum dhcp_token token; |
6b4b0ec7 | 1027 | char *uname; |
4761e04b TL |
1028 | struct universe *universe; |
1029 | struct option *option; | |
d5341d9b | 1030 | unsigned code; |
4761e04b | 1031 | |
f7fdb216 DH |
1032 | if (opt == NULL) |
1033 | return ISC_R_INVALIDARG; | |
1034 | ||
b3519f23 | 1035 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b | 1036 | if (!is_identifier (token)) { |
4615d498 TL |
1037 | parse_warn (cfile, |
1038 | "expecting identifier after option keyword."); | |
4761e04b TL |
1039 | if (token != SEMI) |
1040 | skip_to_semi (cfile); | |
f7fdb216 | 1041 | return ISC_R_BADPARSE; |
4761e04b | 1042 | } |
fdac15d9 | 1043 | uname = dmalloc (strlen (val) + 1, MDL); |
6b4b0ec7 TL |
1044 | if (!uname) |
1045 | log_fatal ("no memory for uname information."); | |
1046 | strcpy (uname, val); | |
b3519f23 | 1047 | token = peek_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
1048 | if (token == DOT) { |
1049 | /* Go ahead and take the DOT token... */ | |
b3519f23 | 1050 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
1051 | |
1052 | /* The next token should be an identifier... */ | |
b3519f23 | 1053 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b | 1054 | if (!is_identifier (token)) { |
4615d498 | 1055 | parse_warn (cfile, "expecting identifier after '.'"); |
4761e04b TL |
1056 | if (token != SEMI) |
1057 | skip_to_semi (cfile); | |
f7fdb216 | 1058 | return ISC_R_BADPARSE; |
4761e04b TL |
1059 | } |
1060 | ||
1061 | /* Look up the option name hash table for the specified | |
6b4b0ec7 | 1062 | uname. */ |
20916cae TL |
1063 | universe = (struct universe *)0; |
1064 | if (!universe_hash_lookup (&universe, universe_hash, | |
1065 | uname, 0, MDL)) { | |
4615d498 | 1066 | parse_warn (cfile, "no option space named %s.", uname); |
4761e04b | 1067 | skip_to_semi (cfile); |
f7fdb216 | 1068 | return ISC_R_NOTFOUND; |
4761e04b TL |
1069 | } |
1070 | } else { | |
1071 | /* Use the default hash table, which contains all the | |
1072 | standard dhcp option names. */ | |
6b4b0ec7 | 1073 | val = uname; |
4761e04b TL |
1074 | universe = &dhcp_universe; |
1075 | } | |
1076 | ||
1077 | /* Look up the actual option info... */ | |
f7fdb216 DH |
1078 | option_name_hash_lookup(opt, universe->name_hash, val, 0, MDL); |
1079 | option = *opt; | |
4761e04b TL |
1080 | |
1081 | /* If we didn't get an option structure, it's an undefined option. */ | |
b1b7b521 | 1082 | if (option) { |
9a7f6fcd TL |
1083 | if (known) |
1084 | *known = 1; | |
d5341d9b SK |
1085 | /* If the option name is of the form unknown-[decimal], use |
1086 | * the trailing decimal value to find the option definition. | |
1087 | * If there is no definition, construct one. This is to | |
1088 | * support legacy use of unknown options in config files or | |
1089 | * lease databases. | |
1090 | */ | |
1091 | } else if (strncasecmp(val, "unknown-", 8) == 0) { | |
1092 | code = atoi(val+8); | |
f7fdb216 | 1093 | |
d5341d9b SK |
1094 | /* Option code 0 is always illegal for us, thanks |
1095 | * to the option decoder. | |
1096 | */ | |
1097 | if (code == 0 || code == universe->end) { | |
1098 | parse_warn(cfile, "Option codes 0 and %u are illegal " | |
1099 | "in the %s space.", universe->end, | |
1100 | universe->name); | |
1101 | skip_to_semi(cfile); | |
f7fdb216 | 1102 | dfree(uname, MDL); |
d5341d9b | 1103 | return ISC_R_FAILURE; |
6b4b0ec7 | 1104 | } |
d5341d9b SK |
1105 | |
1106 | /* It's odd to think of unknown option codes as | |
1107 | * being known, but this means we know what the | |
1108 | * parsed name is talking about. | |
1109 | */ | |
1110 | if (known) | |
1111 | *known = 1; | |
1112 | ||
1113 | option_code_hash_lookup(opt, universe->code_hash, | |
1114 | &code, 0, MDL); | |
1115 | option = *opt; | |
1116 | ||
1117 | /* If we did not find an option of that code, | |
1118 | * manufacture an unknown-xxx option definition. | |
1119 | * Its single reference will ensure that it is | |
1120 | * deleted once the option is recycled out of | |
1121 | * existence (by the parent). | |
1122 | */ | |
1123 | if (option == NULL) { | |
1124 | option = new_option(val, MDL); | |
1125 | option->universe = universe; | |
1126 | option->code = code; | |
1127 | option->format = "X"; | |
1128 | option_reference(opt, option, MDL); | |
1129 | } else | |
1130 | log_info("option %s has been redefined as option %s. " | |
1131 | "Please update your configs if neccessary.", | |
1132 | val, option->name); | |
1133 | /* If we've been told to allocate, that means that this | |
1134 | * (might) be an option code definition, so we'll create | |
1135 | * an option structure and return it for the parent to | |
1136 | * decide. | |
1137 | */ | |
1138 | } else if (allocate) { | |
1139 | option = new_option(val, MDL); | |
1140 | option -> universe = universe; | |
1141 | option_reference(opt, option, MDL); | |
1142 | } else { | |
1143 | parse_warn(cfile, "no option named %s in space %s", | |
1144 | val, universe->name); | |
4761e04b | 1145 | skip_to_semi (cfile); |
f7fdb216 DH |
1146 | dfree(uname, MDL); |
1147 | return ISC_R_NOTFOUND; | |
4761e04b TL |
1148 | } |
1149 | ||
1150 | /* Free the initial identifier token. */ | |
fdac15d9 | 1151 | dfree (uname, MDL); |
f7fdb216 | 1152 | return ISC_R_SUCCESS; |
4761e04b TL |
1153 | } |
1154 | ||
f7fdb216 DH |
1155 | /* IDENTIFIER [WIDTHS] SEMI |
1156 | * WIDTHS ~= LENGTH WIDTH NUMBER | |
1157 | * CODE WIDTH NUMBER | |
1158 | */ | |
52c9d530 TL |
1159 | |
1160 | void parse_option_space_decl (cfile) | |
4615d498 | 1161 | struct parse *cfile; |
52c9d530 TL |
1162 | { |
1163 | int token; | |
b1b7b521 | 1164 | const char *val; |
52c9d530 | 1165 | struct universe **ua, *nu; |
f7fdb216 DH |
1166 | char *nu_name; |
1167 | int tsize=1, lsize=1, hsize = 0; | |
52c9d530 | 1168 | |
b3519f23 TL |
1169 | next_token (&val, (unsigned *)0, cfile); /* Discard the SPACE token, |
1170 | which was checked by the | |
1171 | caller. */ | |
1172 | token = next_token (&val, (unsigned *)0, cfile); | |
52c9d530 | 1173 | if (!is_identifier (token)) { |
4615d498 | 1174 | parse_warn (cfile, "expecting identifier."); |
52c9d530 TL |
1175 | skip_to_semi (cfile); |
1176 | return; | |
1177 | } | |
4bd8800e | 1178 | nu = new_universe (MDL); |
52c9d530 TL |
1179 | if (!nu) |
1180 | log_fatal ("No memory for new option space."); | |
1181 | ||
1182 | /* Set up the server option universe... */ | |
f7fdb216 DH |
1183 | nu_name = dmalloc (strlen (val) + 1, MDL); |
1184 | if (!nu_name) | |
52c9d530 | 1185 | log_fatal ("No memory for new option space name."); |
f7fdb216 DH |
1186 | strcpy (nu_name, val); |
1187 | nu -> name = nu_name; | |
1188 | ||
1189 | do { | |
1190 | token = next_token(&val, NULL, cfile); | |
1191 | switch(token) { | |
1192 | case SEMI: | |
1193 | break; | |
1194 | ||
1195 | case CODE: | |
1196 | token = next_token(&val, NULL, cfile); | |
1197 | if (token != WIDTH) { | |
1198 | parse_warn(cfile, "expecting width token."); | |
1199 | goto bad; | |
1200 | } | |
1201 | ||
1202 | token = next_token(&val, NULL, cfile); | |
1203 | if (token != NUMBER) { | |
1204 | parse_warn(cfile, "expecting number 1, 2, 4."); | |
1205 | goto bad; | |
1206 | } | |
1207 | ||
1208 | tsize = atoi(val); | |
1209 | ||
1210 | ||
1211 | switch (tsize) { | |
1212 | case 1: | |
1213 | if (!hsize) | |
1214 | hsize = BYTE_NAME_HASH_SIZE; | |
1215 | break; | |
1216 | case 2: | |
1217 | if (!hsize) | |
1218 | hsize = WORD_NAME_HASH_SIZE; | |
1219 | break; | |
1220 | case 4: | |
1221 | if (!hsize) | |
1222 | hsize = QUAD_NAME_HASH_SIZE; | |
1223 | break; | |
1224 | default: | |
1225 | parse_warn(cfile, "invalid code width (%d), " | |
1226 | "expecting a 1, 2 or 4.", | |
d19e2cf7 | 1227 | tsize); |
f7fdb216 DH |
1228 | goto bad; |
1229 | } | |
1230 | break; | |
1231 | ||
1232 | case LENGTH: | |
1233 | token = next_token(&val, NULL, cfile); | |
1234 | if (token != WIDTH) { | |
1235 | parse_warn(cfile, "expecting width token."); | |
1236 | goto bad; | |
1237 | } | |
1238 | ||
1239 | token = next_token(&val, NULL, cfile); | |
1240 | if (token != NUMBER) { | |
1241 | parse_warn(cfile, "expecting number 1 or 2."); | |
1242 | goto bad; | |
1243 | } | |
1244 | ||
1245 | lsize = atoi(val); | |
1246 | if (lsize != 1 && lsize != 2) { | |
1247 | parse_warn(cfile, "invalid length width (%d) " | |
d19e2cf7 | 1248 | "expecting 1 or 2.", lsize); |
f7fdb216 DH |
1249 | goto bad; |
1250 | } | |
1251 | ||
1252 | break; | |
1253 | ||
1254 | case HASH: | |
1255 | token = next_token(&val, NULL, cfile); | |
1256 | if (token != SIZE) { | |
1257 | parse_warn(cfile, "expecting size token."); | |
1258 | goto bad; | |
1259 | } | |
1260 | ||
1261 | token = next_token(&val, NULL, cfile); | |
1262 | if (token != NUMBER) { | |
1263 | parse_warn(cfile, "expecting a 10base number"); | |
1264 | goto bad; | |
1265 | } | |
1266 | ||
1267 | /* (2^31)-1 is the highest Mersenne prime we should | |
1268 | * probably allow... | |
1269 | */ | |
1270 | hsize = atoi(val); | |
1271 | if (hsize < 0 || hsize > 0x7FFFFFFF) { | |
1272 | parse_warn(cfile, "invalid hash length: %d", | |
1273 | hsize); | |
1274 | goto bad; | |
1275 | } | |
1276 | ||
1277 | break; | |
1278 | ||
1279 | default: | |
1280 | parse_warn(cfile, "Unexpected token."); | |
1281 | } | |
1282 | } while (token != SEMI); | |
1283 | ||
1284 | if (!hsize) | |
1285 | hsize = DEFAULT_SPACE_HASH_SIZE; | |
1286 | ||
52c9d530 | 1287 | nu -> lookup_func = lookup_hashed_option; |
f7fdb216 | 1288 | nu -> option_state_dereference = hashed_option_state_dereference; |
f769d5ac | 1289 | nu -> foreach = hashed_option_space_foreach; |
52c9d530 TL |
1290 | nu -> save_func = save_hashed_option; |
1291 | nu -> delete_func = delete_hashed_option; | |
1292 | nu -> encapsulate = hashed_option_space_encapsulate; | |
962dc4ab | 1293 | nu -> decode = parse_option_buffer; |
f7fdb216 DH |
1294 | nu -> length_size = lsize; |
1295 | nu -> tag_size = tsize; | |
1296 | switch(tsize) { | |
1297 | case 1: | |
1298 | nu->get_tag = getUChar; | |
1299 | nu->store_tag = putUChar; | |
1300 | break; | |
1301 | case 2: | |
1302 | nu->get_tag = getUShort; | |
1303 | nu->store_tag = putUShort; | |
1304 | break; | |
1305 | case 4: | |
1306 | nu->get_tag = getULong; | |
1307 | nu->store_tag = putULong; | |
1308 | break; | |
1309 | default: | |
1310 | log_fatal("Impossible condition at %s:%d.", MDL); | |
1311 | } | |
1312 | switch(lsize) { | |
98bd7ca0 DH |
1313 | case 0: |
1314 | nu->get_length = NULL; | |
1315 | nu->store_length = NULL; | |
1316 | break; | |
f7fdb216 DH |
1317 | case 1: |
1318 | nu->get_length = getUChar; | |
1319 | nu->store_length = putUChar; | |
1320 | break; | |
1321 | case 2: | |
1322 | nu->get_length = getUShort; | |
1323 | nu->store_length = putUShort; | |
1324 | break; | |
1325 | default: | |
1326 | log_fatal("Impossible condition at %s:%d.", MDL); | |
1327 | } | |
52c9d530 TL |
1328 | nu -> index = universe_count++; |
1329 | if (nu -> index >= universe_max) { | |
fdac15d9 | 1330 | ua = dmalloc (universe_max * 2 * sizeof *ua, MDL); |
52c9d530 TL |
1331 | if (!ua) |
1332 | log_fatal ("No memory to expand option space array."); | |
1333 | memcpy (ua, universes, universe_max * sizeof *ua); | |
1334 | universe_max *= 2; | |
fdac15d9 | 1335 | dfree (universes, MDL); |
52c9d530 TL |
1336 | universes = ua; |
1337 | } | |
1338 | universes [nu -> index] = nu; | |
f7fdb216 DH |
1339 | if (!option_name_new_hash(&nu->name_hash, hsize, MDL) || |
1340 | !option_code_new_hash(&nu->code_hash, hsize, MDL)) | |
1341 | log_fatal("Can't allocate %s option hash table.", nu->name); | |
20916cae | 1342 | universe_hash_add (universe_hash, nu -> name, 0, nu, MDL); |
f7fdb216 DH |
1343 | return; |
1344 | ||
1345 | bad: | |
1346 | dfree(nu_name, MDL); | |
1347 | dfree(nu, MDL); | |
52c9d530 TL |
1348 | } |
1349 | ||
6b4b0ec7 TL |
1350 | /* This is faked up to look good right now. Ideally, this should do a |
1351 | recursive parse and allow arbitrary data structure definitions, but for | |
1352 | now it just allows you to specify a single type, an array of single types, | |
1353 | a sequence of types, or an array of sequences of types. | |
1354 | ||
1355 | ocd :== NUMBER EQUALS ocsd SEMI | |
1356 | ||
1357 | ocsd :== ocsd_type | | |
1358 | ocsd_type_sequence | | |
d8fc5060 | 1359 | ARRAY OF ocsd_simple_type_sequence |
6b4b0ec7 TL |
1360 | |
1361 | ocsd_type_sequence :== LBRACE ocsd_types RBRACE | |
1362 | ||
d8fc5060 TL |
1363 | ocsd_simple_type_sequence :== LBRACE ocsd_simple_types RBRACE |
1364 | ||
1365 | ocsd_types :== ocsd_type | | |
1366 | ocsd_types ocsd_type | |
1367 | ||
1368 | ocsd_type :== ocsd_simple_type | | |
1369 | ARRAY OF ocsd_simple_type | |
1370 | ||
1371 | ocsd_simple_types :== ocsd_simple_type | | |
1372 | ocsd_simple_types ocsd_simple_type | |
1373 | ||
1374 | ocsd_simple_type :== BOOLEAN | | |
1375 | INTEGER NUMBER | | |
1376 | SIGNED INTEGER NUMBER | | |
1377 | UNSIGNED INTEGER NUMBER | | |
1378 | IP-ADDRESS | | |
1379 | TEXT | | |
962dc4ab TL |
1380 | STRING | |
1381 | ENCAPSULATE identifier */ | |
6b4b0ec7 TL |
1382 | |
1383 | int parse_option_code_definition (cfile, option) | |
4615d498 | 1384 | struct parse *cfile; |
6b4b0ec7 TL |
1385 | struct option *option; |
1386 | { | |
b1b7b521 | 1387 | const char *val; |
6b4b0ec7 | 1388 | enum dhcp_token token; |
f7fdb216 | 1389 | struct option *oldopt; |
b1b7b521 | 1390 | unsigned arrayp = 0; |
6b4b0ec7 TL |
1391 | int recordp = 0; |
1392 | int no_more_in_record = 0; | |
1393 | char tokbuf [128]; | |
b1b7b521 | 1394 | unsigned tokix = 0; |
6b4b0ec7 TL |
1395 | char type; |
1396 | int code; | |
1397 | int is_signed; | |
b1b7b521 | 1398 | char *s; |
962dc4ab | 1399 | int has_encapsulation = 0; |
98bd7ca0 | 1400 | struct universe *encapsulated; |
6b4b0ec7 TL |
1401 | |
1402 | /* Parse the option code. */ | |
b3519f23 | 1403 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1404 | if (token != NUMBER) { |
4615d498 | 1405 | parse_warn (cfile, "expecting option code number."); |
6b4b0ec7 TL |
1406 | skip_to_semi (cfile); |
1407 | return 0; | |
1408 | } | |
1409 | option -> code = atoi (val); | |
1410 | ||
b3519f23 | 1411 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1412 | if (token != EQUAL) { |
4615d498 | 1413 | parse_warn (cfile, "expecting \"=\""); |
6b4b0ec7 TL |
1414 | skip_to_semi (cfile); |
1415 | return 0; | |
1416 | } | |
1417 | ||
1418 | /* See if this is an array. */ | |
b3519f23 | 1419 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1420 | if (token == ARRAY) { |
b3519f23 | 1421 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1422 | if (token != OF) { |
4615d498 | 1423 | parse_warn (cfile, "expecting \"of\"."); |
6b4b0ec7 TL |
1424 | skip_to_semi (cfile); |
1425 | return 0; | |
1426 | } | |
1427 | arrayp = 1; | |
b3519f23 | 1428 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 TL |
1429 | } |
1430 | ||
1431 | if (token == LBRACE) { | |
1432 | recordp = 1; | |
b3519f23 | 1433 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 TL |
1434 | } |
1435 | ||
1436 | /* At this point we're expecting a data type. */ | |
1437 | next_type: | |
962dc4ab TL |
1438 | if (has_encapsulation) { |
1439 | parse_warn (cfile, | |
1440 | "encapsulate must always be the last item."); | |
1441 | skip_to_semi (cfile); | |
1442 | return 0; | |
1443 | } | |
1444 | ||
6b4b0ec7 | 1445 | switch (token) { |
d8fc5060 TL |
1446 | case ARRAY: |
1447 | if (arrayp) { | |
1448 | parse_warn (cfile, "no nested arrays."); | |
1449 | skip_to_rbrace (cfile, recordp); | |
1450 | if (recordp) | |
1451 | skip_to_semi (cfile); | |
1452 | return 0; | |
1453 | } | |
b3519f23 | 1454 | token = next_token (&val, (unsigned *)0, cfile); |
d8fc5060 TL |
1455 | if (token != OF) { |
1456 | parse_warn (cfile, "expecting \"of\"."); | |
1457 | skip_to_semi (cfile); | |
1458 | return 0; | |
1459 | } | |
1460 | arrayp = recordp + 1; | |
b3519f23 | 1461 | token = next_token (&val, (unsigned *)0, cfile); |
d8fc5060 TL |
1462 | if ((recordp) && (token == LBRACE)) { |
1463 | parse_warn (cfile, | |
1464 | "only uniform array inside record."); | |
1465 | skip_to_rbrace (cfile, recordp + 1); | |
1466 | skip_to_semi (cfile); | |
1467 | return 0; | |
1468 | } | |
1469 | goto next_type; | |
6b4b0ec7 TL |
1470 | case BOOLEAN: |
1471 | type = 'f'; | |
1472 | break; | |
1473 | case INTEGER: | |
1474 | is_signed = 1; | |
1475 | parse_integer: | |
b3519f23 | 1476 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1477 | if (token != NUMBER) { |
4615d498 | 1478 | parse_warn (cfile, "expecting number."); |
6b4b0ec7 TL |
1479 | skip_to_rbrace (cfile, recordp); |
1480 | if (recordp) | |
1481 | skip_to_semi (cfile); | |
1482 | return 0; | |
1483 | } | |
1484 | switch (atoi (val)) { | |
1485 | case 8: | |
1486 | type = is_signed ? 'b' : 'B'; | |
1487 | break; | |
1488 | case 16: | |
1489 | type = is_signed ? 's' : 'S'; | |
1490 | break; | |
1491 | case 32: | |
1492 | type = is_signed ? 'l' : 'L'; | |
1493 | break; | |
1494 | default: | |
4615d498 TL |
1495 | parse_warn (cfile, |
1496 | "%s bit precision is not supported.", val); | |
6b4b0ec7 TL |
1497 | skip_to_rbrace (cfile, recordp); |
1498 | if (recordp) | |
1499 | skip_to_semi (cfile); | |
1500 | return 0; | |
1501 | } | |
1502 | break; | |
1503 | case SIGNED: | |
1504 | is_signed = 1; | |
1505 | parse_signed: | |
b3519f23 | 1506 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 | 1507 | if (token != INTEGER) { |
4615d498 | 1508 | parse_warn (cfile, "expecting \"integer\" keyword."); |
6b4b0ec7 TL |
1509 | skip_to_rbrace (cfile, recordp); |
1510 | if (recordp) | |
1511 | skip_to_semi (cfile); | |
1512 | return 0; | |
1513 | } | |
1514 | goto parse_integer; | |
1515 | case UNSIGNED: | |
1516 | is_signed = 0; | |
1517 | goto parse_signed; | |
1518 | ||
1519 | case IP_ADDRESS: | |
1520 | type = 'I'; | |
1521 | break; | |
98bd7ca0 DH |
1522 | case IP6_ADDRESS: |
1523 | type = '6'; | |
1524 | break; | |
d758ad8c TL |
1525 | case DOMAIN_NAME: |
1526 | type = 'd'; | |
1527 | goto no_arrays; | |
dba5803b | 1528 | case DOMAIN_LIST: |
98bd7ca0 DH |
1529 | /* Consume optional compression indicator. */ |
1530 | token = peek_token(&val, NULL, cfile); | |
1531 | if (token == COMPRESSED) { | |
1532 | token = next_token(&val, NULL, cfile); | |
1533 | tokbuf[tokix++] = 'D'; | |
1534 | type = 'c'; | |
1535 | } else | |
1536 | type = 'D'; | |
dba5803b | 1537 | goto no_arrays; |
6b4b0ec7 TL |
1538 | case TEXT: |
1539 | type = 't'; | |
1540 | no_arrays: | |
1541 | if (arrayp) { | |
4615d498 | 1542 | parse_warn (cfile, "arrays of text strings not %s", |
6b4b0ec7 TL |
1543 | "yet supported."); |
1544 | skip_to_rbrace (cfile, recordp); | |
1545 | if (recordp) | |
1546 | skip_to_semi (cfile); | |
1547 | return 0; | |
1548 | } | |
1549 | no_more_in_record = 1; | |
1550 | break; | |
ef91cb39 | 1551 | case STRING_TOKEN: |
6b4b0ec7 TL |
1552 | type = 'X'; |
1553 | goto no_arrays; | |
1554 | ||
962dc4ab | 1555 | case ENCAPSULATE: |
b3519f23 | 1556 | token = next_token (&val, (unsigned *)0, cfile); |
962dc4ab TL |
1557 | if (!is_identifier (token)) { |
1558 | parse_warn (cfile, | |
1559 | "expecting option space identifier"); | |
1560 | skip_to_semi (cfile); | |
1561 | return 0; | |
1562 | } | |
98bd7ca0 DH |
1563 | encapsulated = NULL; |
1564 | if (!universe_hash_lookup(&encapsulated, universe_hash, | |
1565 | val, strlen(val), MDL)) { | |
a512d11b | 1566 | parse_warn(cfile, "unknown option space %s", val); |
98bd7ca0 DH |
1567 | skip_to_semi (cfile); |
1568 | return 0; | |
1569 | } | |
962dc4ab TL |
1570 | if (strlen (val) + tokix + 2 > sizeof (tokbuf)) |
1571 | goto toobig; | |
1572 | tokbuf [tokix++] = 'E'; | |
1573 | strcpy (&tokbuf [tokix], val); | |
1574 | tokix += strlen (val); | |
1575 | type = '.'; | |
1576 | has_encapsulation = 1; | |
1577 | break; | |
1578 | ||
6b4b0ec7 | 1579 | default: |
4615d498 | 1580 | parse_warn (cfile, "unknown data type %s", val); |
6b4b0ec7 TL |
1581 | skip_to_rbrace (cfile, recordp); |
1582 | if (recordp) | |
1583 | skip_to_semi (cfile); | |
1584 | return 0; | |
1585 | } | |
1586 | ||
1587 | if (tokix == sizeof tokbuf) { | |
962dc4ab | 1588 | toobig: |
4615d498 | 1589 | parse_warn (cfile, "too many types in record."); |
6b4b0ec7 TL |
1590 | skip_to_rbrace (cfile, recordp); |
1591 | if (recordp) | |
1592 | skip_to_semi (cfile); | |
1593 | return 0; | |
1594 | } | |
1595 | tokbuf [tokix++] = type; | |
1596 | ||
1597 | if (recordp) { | |
b3519f23 | 1598 | token = next_token (&val, (unsigned *)0, cfile); |
d8fc5060 TL |
1599 | if (arrayp > recordp) { |
1600 | if (tokix == sizeof tokbuf) { | |
1601 | parse_warn (cfile, | |
1602 | "too many types in record."); | |
1603 | skip_to_rbrace (cfile, 1); | |
1604 | skip_to_semi (cfile); | |
1605 | return 0; | |
1606 | } | |
1607 | arrayp = 0; | |
1608 | tokbuf[tokix++] = 'a'; | |
1609 | } | |
6b4b0ec7 TL |
1610 | if (token == COMMA) { |
1611 | if (no_more_in_record) { | |
4615d498 TL |
1612 | parse_warn (cfile, |
1613 | "%s must be at end of record.", | |
6b4b0ec7 TL |
1614 | type == 't' ? "text" : "string"); |
1615 | skip_to_rbrace (cfile, 1); | |
1616 | if (recordp) | |
1617 | skip_to_semi (cfile); | |
1618 | return 0; | |
1619 | } | |
b3519f23 | 1620 | token = next_token (&val, (unsigned *)0, cfile); |
6b4b0ec7 TL |
1621 | goto next_type; |
1622 | } | |
1623 | if (token != RBRACE) { | |
4615d498 | 1624 | parse_warn (cfile, "expecting right brace."); |
6b4b0ec7 TL |
1625 | skip_to_rbrace (cfile, 1); |
1626 | if (recordp) | |
1627 | skip_to_semi (cfile); | |
1628 | return 0; | |
1629 | } | |
1630 | } | |
1631 | if (!parse_semi (cfile)) { | |
4615d498 | 1632 | parse_warn (cfile, "semicolon expected."); |
6b4b0ec7 TL |
1633 | skip_to_semi (cfile); |
1634 | if (recordp) | |
1635 | skip_to_semi (cfile); | |
1636 | return 0; | |
1637 | } | |
962dc4ab TL |
1638 | if (has_encapsulation && arrayp) { |
1639 | parse_warn (cfile, | |
1640 | "Arrays of encapsulations don't make sense."); | |
1641 | return 0; | |
1642 | } | |
98bd7ca0 DH |
1643 | s = dmalloc(tokix + (arrayp ? 1 : 0) + 1, MDL); |
1644 | if (s == NULL) { | |
1645 | log_fatal("no memory for option format."); | |
1646 | } | |
1647 | memcpy(s, tokbuf, tokix); | |
1648 | if (arrayp) { | |
1649 | s[tokix++] = (arrayp > recordp) ? 'a' : 'A'; | |
1650 | } | |
1651 | s[tokix] = '\0'; | |
1652 | ||
b1b7b521 | 1653 | option -> format = s; |
f7fdb216 DH |
1654 | |
1655 | oldopt = NULL; | |
1656 | option_code_hash_lookup(&oldopt, option->universe->code_hash, | |
1657 | &option->code, 0, MDL); | |
1658 | if (oldopt) { | |
1659 | option_name_hash_delete(option->universe->name_hash, | |
1660 | oldopt->name, 0, MDL); | |
1661 | option_code_hash_delete(option->universe->code_hash, | |
1662 | &oldopt->code, 0, MDL); | |
1663 | ||
1664 | option_dereference(&oldopt, MDL); | |
6b4b0ec7 | 1665 | } |
f7fdb216 DH |
1666 | option_code_hash_add(option->universe->code_hash, &option->code, 0, |
1667 | option, MDL); | |
1668 | option_name_hash_add(option->universe->name_hash, option->name, 0, | |
1669 | option, MDL); | |
98bd7ca0 DH |
1670 | if (has_encapsulation) { |
1671 | /* INSIST(tokbuf[0] == 'E'); */ | |
1672 | /* INSIST(encapsulated != NULL); */ | |
1673 | if (!option_code_hash_lookup(&encapsulated->enc_opt, | |
1674 | option->universe->code_hash, | |
1675 | &option->code, 0, MDL)) { | |
1676 | log_fatal("error finding encapsulated option (%s:%d)", | |
1677 | MDL); | |
1678 | } | |
1679 | } | |
6b4b0ec7 TL |
1680 | return 1; |
1681 | } | |
1682 | ||
028b1f6a TL |
1683 | /* |
1684 | * base64 :== NUMBER_OR_STRING | |
1685 | */ | |
1686 | ||
1687 | int parse_base64 (data, cfile) | |
1688 | struct data_string *data; | |
1689 | struct parse *cfile; | |
1690 | { | |
1691 | enum dhcp_token token; | |
1692 | const char *val; | |
8f01f9ec | 1693 | int i, j, k; |
028b1f6a | 1694 | unsigned acc = 0; |
6b474b5b TL |
1695 | static unsigned char |
1696 | from64 [] = {64, 64, 64, 64, 64, 64, 64, 64, /* \"#$%&' */ | |
1697 | 64, 64, 64, 62, 64, 64, 64, 63, /* ()*+,-./ */ | |
1698 | 52, 53, 54, 55, 56, 57, 58, 59, /* 01234567 */ | |
d758ad8c | 1699 | 60, 61, 64, 64, 64, 64, 64, 64, /* 89:;<=>? */ |
6b474b5b TL |
1700 | 64, 0, 1, 2, 3, 4, 5, 6, /* @ABCDEFG */ |
1701 | 7, 8, 9, 10, 11, 12, 13, 14, /* HIJKLMNO */ | |
1702 | 15, 16, 17, 18, 19, 20, 21, 22, /* PQRSTUVW */ | |
1703 | 23, 24, 25, 64, 64, 64, 64, 64, /* XYZ[\]^_ */ | |
1704 | 64, 26, 27, 28, 29, 30, 31, 32, /* 'abcdefg */ | |
1705 | 33, 34, 35, 36, 37, 38, 39, 40, /* hijklmno */ | |
1706 | 41, 42, 43, 44, 45, 46, 47, 48, /* pqrstuvw */ | |
630786fc | 1707 | 49, 50, 51, 64, 64, 64, 64, 64}; /* xyz{|}~ */ |
8f01f9ec TL |
1708 | struct string_list *bufs = (struct string_list *)0, |
1709 | *last = (struct string_list *)0, | |
1710 | *t; | |
1711 | int cc = 0; | |
1712 | int terminated = 0; | |
028b1f6a | 1713 | |
8f01f9ec TL |
1714 | /* It's possible for a + or a / to cause a base64 quantity to be |
1715 | tokenized into more than one token, so we have to parse them all | |
1716 | in before decoding. */ | |
1717 | do { | |
b3519f23 | 1718 | unsigned l; |
8f01f9ec | 1719 | |
b3519f23 | 1720 | token = next_token (&val, &l, cfile); |
8f01f9ec TL |
1721 | t = dmalloc (l + sizeof *t, MDL); |
1722 | if (!t) | |
1723 | log_fatal ("no memory for base64 buffer."); | |
1724 | memset (t, 0, (sizeof *t) - 1); | |
b3519f23 | 1725 | memcpy (t -> string, val, l + 1); |
8f01f9ec TL |
1726 | cc += l; |
1727 | if (last) | |
1728 | last -> next = t; | |
1729 | else | |
1730 | bufs = t; | |
1731 | last = t; | |
b3519f23 | 1732 | token = peek_token (&val, (unsigned *)0, cfile); |
8f01f9ec | 1733 | } while (token == NUMBER_OR_NAME || token == NAME || token == EQUAL || |
2f98b84e TL |
1734 | token == NUMBER || token == PLUS || token == SLASH || |
1735 | token == STRING); | |
8f01f9ec TL |
1736 | |
1737 | data -> len = cc; | |
028b1f6a TL |
1738 | data -> len = (data -> len * 3) / 4; |
1739 | if (!buffer_allocate (&data -> buffer, data -> len, MDL)) { | |
1740 | parse_warn (cfile, "can't allocate buffer for base64 data."); | |
1741 | data -> len = 0; | |
1742 | data -> data = (unsigned char *)0; | |
1743 | return 0; | |
1744 | } | |
1745 | ||
8f01f9ec TL |
1746 | j = k = 0; |
1747 | for (t = bufs; t; t = t -> next) { | |
1748 | for (i = 0; t -> string [i]; i++) { | |
1749 | unsigned foo = t -> string [i]; | |
1750 | if (terminated && foo != '=') { | |
1751 | parse_warn (cfile, | |
1752 | "stuff after base64 '=' terminator: %s.", | |
1753 | &t -> string [i]); | |
1754 | goto bad; | |
1755 | } | |
028b1f6a TL |
1756 | if (foo < ' ' || foo > 'z') { |
1757 | bad64: | |
1758 | parse_warn (cfile, | |
8f01f9ec TL |
1759 | "invalid base64 character %d.", |
1760 | t -> string [i]); | |
1761 | bad: | |
028b1f6a | 1762 | data_string_forget (data, MDL); |
8f01f9ec | 1763 | goto out; |
028b1f6a | 1764 | } |
8f01f9ec TL |
1765 | if (foo == '=') |
1766 | terminated = 1; | |
1767 | else { | |
1768 | foo = from64 [foo - ' ']; | |
1769 | if (foo == 64) | |
1770 | goto bad64; | |
1771 | acc = (acc << 6) + foo; | |
1772 | switch (k % 4) { | |
1773 | case 0: | |
1774 | break; | |
1775 | case 1: | |
1776 | data -> buffer -> data [j++] = (acc >> 4); | |
1777 | acc = acc & 0x0f; | |
1778 | break; | |
1779 | ||
1780 | case 2: | |
1781 | data -> buffer -> data [j++] = (acc >> 2); | |
1782 | acc = acc & 0x03; | |
1783 | break; | |
1784 | case 3: | |
1785 | data -> buffer -> data [j++] = acc; | |
1786 | acc = 0; | |
1787 | break; | |
1788 | } | |
1789 | } | |
1790 | k++; | |
1791 | } | |
1792 | } | |
1793 | if (k % 4) { | |
1794 | if (acc) { | |
1795 | parse_warn (cfile, | |
1796 | "partial base64 value left over: %d.", | |
1797 | acc); | |
028b1f6a TL |
1798 | } |
1799 | } | |
028b1f6a TL |
1800 | data -> len = j; |
1801 | data -> data = data -> buffer -> data; | |
8f01f9ec TL |
1802 | out: |
1803 | for (t = bufs; t; t = last) { | |
1804 | last = t -> next; | |
1805 | dfree (t, MDL); | |
1806 | } | |
1807 | if (data -> len) | |
1808 | return 1; | |
1809 | else | |
1810 | return 0; | |
028b1f6a TL |
1811 | } |
1812 | ||
1813 | ||
be6be08d | 1814 | /* |
c57db45c SK |
1815 | * colon-separated-hex-list :== NUMBER | |
1816 | * NUMBER COLON colon-separated-hex-list | |
be6be08d TL |
1817 | */ |
1818 | ||
02a015fb TL |
1819 | int parse_cshl (data, cfile) |
1820 | struct data_string *data; | |
4615d498 | 1821 | struct parse *cfile; |
4761e04b | 1822 | { |
c5b0f529 | 1823 | u_int8_t ibuf [128]; |
b1b7b521 TL |
1824 | unsigned ilen = 0; |
1825 | unsigned tlen = 0; | |
4761e04b TL |
1826 | struct option_tag *sl = (struct option_tag *)0; |
1827 | struct option_tag *next, **last = &sl; | |
02a015fb | 1828 | enum dhcp_token token; |
b1b7b521 | 1829 | const char *val; |
02a015fb | 1830 | unsigned char *rvp; |
4761e04b TL |
1831 | |
1832 | do { | |
b3519f23 | 1833 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b | 1834 | if (token != NUMBER && token != NUMBER_OR_NAME) { |
4615d498 | 1835 | parse_warn (cfile, "expecting hexadecimal number."); |
4761e04b TL |
1836 | skip_to_semi (cfile); |
1837 | for (; sl; sl = next) { | |
1838 | next = sl -> next; | |
fdac15d9 | 1839 | dfree (sl, MDL); |
4761e04b | 1840 | } |
02a015fb | 1841 | return 0; |
4761e04b TL |
1842 | } |
1843 | if (ilen == sizeof ibuf) { | |
1844 | next = (struct option_tag *) | |
1845 | dmalloc (ilen - 1 + | |
fdac15d9 | 1846 | sizeof (struct option_tag), MDL); |
4761e04b | 1847 | if (!next) |
8ae2d595 | 1848 | log_fatal ("no memory for string list."); |
4761e04b TL |
1849 | memcpy (next -> data, ibuf, ilen); |
1850 | *last = next; | |
1851 | last = &next -> next; | |
1852 | tlen += ilen; | |
1853 | ilen = 0; | |
1854 | } | |
4615d498 | 1855 | convert_num (cfile, &ibuf [ilen++], val, 16, 8); |
4761e04b | 1856 | |
b3519f23 | 1857 | token = peek_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
1858 | if (token != COLON) |
1859 | break; | |
b3519f23 | 1860 | token = next_token (&val, (unsigned *)0, cfile); |
4761e04b TL |
1861 | } while (1); |
1862 | ||
4bd8800e | 1863 | if (!buffer_allocate (&data -> buffer, tlen + ilen, MDL)) |
8ae2d595 | 1864 | log_fatal ("no memory to store octet data."); |
02a015fb TL |
1865 | data -> data = &data -> buffer -> data [0]; |
1866 | data -> len = tlen + ilen; | |
1867 | data -> terminated = 0; | |
1868 | ||
b1b7b521 | 1869 | rvp = &data -> buffer -> data [0]; |
4761e04b TL |
1870 | while (sl) { |
1871 | next = sl -> next; | |
1872 | memcpy (rvp, sl -> data, sizeof ibuf); | |
1873 | rvp += sizeof ibuf; | |
fdac15d9 | 1874 | dfree (sl, MDL); |
4761e04b TL |
1875 | sl = next; |
1876 | } | |
1877 | ||
1878 | memcpy (rvp, ibuf, ilen); | |
02a015fb | 1879 | return 1; |
4761e04b | 1880 | } |
be6be08d TL |
1881 | |
1882 | /* | |
1883 | * executable-statements :== executable-statement executable-statements | | |
1884 | * executable-statement | |
1885 | * | |
1886 | * executable-statement :== | |
1887 | * IF if-statement | | |
1888 | * ADD class-name SEMI | | |
1889 | * BREAK SEMI | | |
1890 | * OPTION option-parameter SEMI | | |
1891 | * SUPERSEDE option-parameter SEMI | | |
1892 | * PREPEND option-parameter SEMI | | |
1893 | * APPEND option-parameter SEMI | |
1894 | */ | |
1895 | ||
f579f39f | 1896 | int parse_executable_statements (statements, cfile, lose, case_context) |
79a65726 | 1897 | struct executable_statement **statements; |
4615d498 | 1898 | struct parse *cfile; |
be6be08d | 1899 | int *lose; |
f579f39f | 1900 | enum expression_context case_context; |
be6be08d | 1901 | { |
79a65726 | 1902 | struct executable_statement **next; |
be6be08d | 1903 | |
79a65726 | 1904 | next = statements; |
f579f39f | 1905 | while (parse_executable_statement (next, cfile, lose, case_context)) |
be6be08d | 1906 | next = &((*next) -> next); |
02a015fb | 1907 | if (!*lose) |
79a65726 TL |
1908 | return 1; |
1909 | return 0; | |
be6be08d TL |
1910 | } |
1911 | ||
f579f39f | 1912 | int parse_executable_statement (result, cfile, lose, case_context) |
79a65726 | 1913 | struct executable_statement **result; |
4615d498 | 1914 | struct parse *cfile; |
be6be08d | 1915 | int *lose; |
f579f39f | 1916 | enum expression_context case_context; |
be6be08d | 1917 | { |
02a015fb | 1918 | enum dhcp_token token; |
b1b7b521 | 1919 | const char *val; |
253c8b6a | 1920 | unsigned len; |
79a65726 | 1921 | struct executable_statement base; |
be6be08d | 1922 | struct class *cta; |
272ef1bc | 1923 | struct option *option=NULL; |
b1013db7 | 1924 | struct option_cache *cache; |
253c8b6a | 1925 | struct expression **ep; |
b1b7b521 | 1926 | int known; |
0776fd12 | 1927 | int flag; |
88ab5737 | 1928 | int i; |
fa392aea | 1929 | struct dns_zone *zone; |
fa392aea | 1930 | isc_result_t status; |
d758ad8c | 1931 | char *s; |
be6be08d | 1932 | |
b3519f23 | 1933 | token = peek_token (&val, (unsigned *)0, cfile); |
b1013db7 | 1934 | switch (token) { |
5e864416 DH |
1935 | case DB_TIME_FORMAT: |
1936 | next_token(&val, NULL, cfile); | |
1937 | ||
1938 | token = next_token(&val, NULL, cfile); | |
1939 | if (token == DEFAULT) { | |
1940 | db_time_format = DEFAULT_TIME_FORMAT; | |
1941 | } else if (token == LOCAL) { | |
1942 | db_time_format = LOCAL_TIME_FORMAT; | |
1943 | } else { | |
1944 | parse_warn(cfile, "Expecting 'local' or 'default'."); | |
1945 | if (token != SEMI) | |
1946 | skip_to_semi(cfile); | |
1947 | *lose = 1; | |
1948 | return 0; | |
1949 | } | |
1950 | ||
1951 | token = next_token(&val, NULL, cfile); | |
1952 | if (token != SEMI) { | |
1953 | parse_warn(cfile, "Expecting a semicolon."); | |
1954 | *lose = 1; | |
1955 | return 0; | |
1956 | } | |
1957 | ||
1958 | /* We're done here. */ | |
1959 | return 1; | |
1960 | ||
be6be08d | 1961 | case IF: |
b3519f23 | 1962 | next_token (&val, (unsigned *)0, cfile); |
79a65726 TL |
1963 | return parse_if_statement (result, cfile, lose); |
1964 | ||
eb018e2b | 1965 | case TOKEN_ADD: |
b3519f23 TL |
1966 | token = next_token (&val, (unsigned *)0, cfile); |
1967 | token = next_token (&val, (unsigned *)0, cfile); | |
be6be08d | 1968 | if (token != STRING) { |
4615d498 | 1969 | parse_warn (cfile, "expecting class name."); |
be6be08d TL |
1970 | skip_to_semi (cfile); |
1971 | *lose = 1; | |
79a65726 | 1972 | return 0; |
be6be08d | 1973 | } |
20916cae TL |
1974 | cta = (struct class *)0; |
1975 | status = find_class (&cta, val, MDL); | |
1976 | if (status != ISC_R_SUCCESS) { | |
1977 | parse_warn (cfile, "class %s: %s", | |
1978 | val, isc_result_totext (status)); | |
be6be08d TL |
1979 | skip_to_semi (cfile); |
1980 | *lose = 1; | |
79a65726 | 1981 | return 0; |
be6be08d TL |
1982 | } |
1983 | if (!parse_semi (cfile)) { | |
1984 | *lose = 1; | |
79a65726 | 1985 | return 0; |
be6be08d | 1986 | } |
4bd8800e | 1987 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
1988 | log_fatal ("no memory for new statement."); |
1989 | (*result) -> op = add_statement; | |
1990 | (*result) -> data.add = cta; | |
be6be08d TL |
1991 | break; |
1992 | ||
1993 | case BREAK: | |
b3519f23 | 1994 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
1995 | if (!parse_semi (cfile)) { |
1996 | *lose = 1; | |
79a65726 | 1997 | return 0; |
be6be08d | 1998 | } |
4bd8800e | 1999 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
2000 | log_fatal ("no memory for new statement."); |
2001 | (*result) -> op = break_statement; | |
be6be08d TL |
2002 | break; |
2003 | ||
25541f2f | 2004 | case SEND: |
b3519f23 | 2005 | token = next_token (&val, (unsigned *)0, cfile); |
1898dcf7 | 2006 | known = 0; |
f7fdb216 DH |
2007 | status = parse_option_name (cfile, 0, &known, &option); |
2008 | if (status != ISC_R_SUCCESS || option == NULL) { | |
1898dcf7 TL |
2009 | *lose = 1; |
2010 | return 0; | |
2011 | } | |
f7fdb216 DH |
2012 | status = parse_option_statement(result, cfile, 1, option, |
2013 | send_option_statement); | |
2014 | option_dereference(&option, MDL); | |
2015 | return status; | |
25541f2f TL |
2016 | |
2017 | case SUPERSEDE: | |
be6be08d | 2018 | case OPTION: |
b3519f23 | 2019 | token = next_token (&val, (unsigned *)0, cfile); |
b1b7b521 | 2020 | known = 0; |
f7fdb216 DH |
2021 | status = parse_option_name (cfile, 0, &known, &option); |
2022 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2023 | *lose = 1; |
79a65726 | 2024 | return 0; |
be6be08d | 2025 | } |
f7fdb216 DH |
2026 | status = parse_option_statement(result, cfile, 1, option, |
2027 | supersede_option_statement); | |
2028 | option_dereference(&option, MDL); | |
2029 | return status; | |
be6be08d | 2030 | |
b1013db7 | 2031 | case ALLOW: |
0776fd12 TL |
2032 | flag = 1; |
2033 | goto pad; | |
b1013db7 | 2034 | case DENY: |
0776fd12 TL |
2035 | flag = 0; |
2036 | goto pad; | |
2037 | case IGNORE: | |
2038 | flag = 2; | |
2039 | pad: | |
b3519f23 | 2040 | token = next_token (&val, (unsigned *)0, cfile); |
b1013db7 | 2041 | cache = (struct option_cache *)0; |
2db25842 | 2042 | if (!parse_allow_deny (&cache, cfile, flag)) |
79a65726 | 2043 | return 0; |
4bd8800e | 2044 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
2045 | log_fatal ("no memory for new statement."); |
2046 | (*result) -> op = supersede_option_statement; | |
2047 | (*result) -> data.option = cache; | |
b1013db7 TL |
2048 | break; |
2049 | ||
be6be08d | 2050 | case DEFAULT: |
b3519f23 TL |
2051 | token = next_token (&val, (unsigned *)0, cfile); |
2052 | token = peek_token (&val, (unsigned *)0, cfile); | |
f579f39f TL |
2053 | if (token == COLON) |
2054 | goto switch_default; | |
b1b7b521 | 2055 | known = 0; |
f7fdb216 DH |
2056 | status = parse_option_name (cfile, 0, &known, &option); |
2057 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2058 | *lose = 1; |
79a65726 | 2059 | return 0; |
be6be08d | 2060 | } |
f7fdb216 DH |
2061 | status = parse_option_statement(result, cfile, 1, option, |
2062 | default_option_statement); | |
2063 | option_dereference(&option, MDL); | |
2064 | return status; | |
be6be08d TL |
2065 | |
2066 | case PREPEND: | |
b3519f23 | 2067 | token = next_token (&val, (unsigned *)0, cfile); |
b1b7b521 | 2068 | known = 0; |
f7fdb216 DH |
2069 | status = parse_option_name (cfile, 0, &known, &option); |
2070 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2071 | *lose = 1; |
79a65726 | 2072 | return 0; |
be6be08d | 2073 | } |
f7fdb216 DH |
2074 | status = parse_option_statement(result, cfile, 1, option, |
2075 | prepend_option_statement); | |
2076 | option_dereference(&option, MDL); | |
2077 | return status; | |
be6be08d TL |
2078 | |
2079 | case APPEND: | |
b3519f23 | 2080 | token = next_token (&val, (unsigned *)0, cfile); |
b1b7b521 | 2081 | known = 0; |
f7fdb216 DH |
2082 | status = parse_option_name (cfile, 0, &known, &option); |
2083 | if (status != ISC_R_SUCCESS || option == NULL) { | |
be6be08d | 2084 | *lose = 1; |
79a65726 | 2085 | return 0; |
be6be08d | 2086 | } |
f7fdb216 DH |
2087 | status = parse_option_statement(result, cfile, 1, option, |
2088 | append_option_statement); | |
2089 | option_dereference(&option, MDL); | |
2090 | return status; | |
be6be08d | 2091 | |
79a65726 | 2092 | case ON: |
b3519f23 | 2093 | token = next_token (&val, (unsigned *)0, cfile); |
79a65726 TL |
2094 | return parse_on_statement (result, cfile, lose); |
2095 | ||
f579f39f | 2096 | case SWITCH: |
b3519f23 | 2097 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2098 | return parse_switch_statement (result, cfile, lose); |
2099 | ||
2100 | case CASE: | |
b3519f23 | 2101 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2102 | if (case_context == context_any) { |
2103 | parse_warn (cfile, | |
2104 | "case statement in inappropriate scope."); | |
2105 | *lose = 1; | |
2106 | skip_to_semi (cfile); | |
2107 | return 0; | |
2108 | } | |
2109 | return parse_case_statement (result, | |
2110 | cfile, lose, case_context); | |
2111 | ||
2112 | switch_default: | |
b3519f23 | 2113 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2114 | if (case_context == context_any) { |
2115 | parse_warn (cfile, "switch default statement in %s", | |
2116 | "inappropriate scope."); | |
2117 | ||
2118 | *lose = 1; | |
2119 | return 0; | |
2120 | } else { | |
4bd8800e | 2121 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
2122 | log_fatal ("no memory for default statement."); |
2123 | (*result) -> op = default_statement; | |
2124 | return 1; | |
2125 | } | |
2126 | ||
31cb2a5f | 2127 | case DEFINE: |
f579f39f | 2128 | case TOKEN_SET: |
b3519f23 | 2129 | token = next_token (&val, (unsigned *)0, cfile); |
31cb2a5f TL |
2130 | if (token == DEFINE) |
2131 | flag = 1; | |
2132 | else | |
2133 | flag = 0; | |
f579f39f | 2134 | |
b3519f23 | 2135 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2136 | if (token != NAME && token != NUMBER_OR_NAME) { |
2137 | parse_warn (cfile, | |
2138 | "%s can't be a variable name", val); | |
2139 | badset: | |
2140 | skip_to_semi (cfile); | |
2141 | *lose = 1; | |
2142 | return 0; | |
2143 | } | |
2144 | ||
4bd8800e | 2145 | if (!executable_statement_allocate (result, MDL)) |
f579f39f | 2146 | log_fatal ("no memory for set statement."); |
31cb2a5f | 2147 | (*result) -> op = flag ? define_statement : set_statement; |
fdac15d9 | 2148 | (*result) -> data.set.name = dmalloc (strlen (val) + 1, MDL); |
f579f39f TL |
2149 | if (!(*result)->data.set.name) |
2150 | log_fatal ("can't allocate variable name"); | |
2151 | strcpy ((*result) -> data.set.name, val); | |
b3519f23 | 2152 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f | 2153 | |
31cb2a5f TL |
2154 | if (token == LPAREN) { |
2155 | struct string_list *head, *cur, *new; | |
2156 | struct expression *expr; | |
2157 | head = cur = (struct string_list *)0; | |
2158 | do { | |
b3519f23 TL |
2159 | token = next_token (&val, |
2160 | (unsigned *)0, cfile); | |
31cb2a5f TL |
2161 | if (token == RPAREN) |
2162 | break; | |
2163 | if (token != NAME && token != NUMBER_OR_NAME) { | |
2164 | parse_warn (cfile, | |
2165 | "expecting argument name"); | |
2166 | skip_to_rbrace (cfile, 0); | |
2167 | *lose = 1; | |
2168 | executable_statement_dereference | |
2169 | (result, MDL); | |
2170 | return 0; | |
2171 | } | |
2172 | new = ((struct string_list *) | |
2173 | dmalloc (sizeof (struct string_list) + | |
2174 | strlen (val), MDL)); | |
2175 | if (!new) | |
2176 | log_fatal ("can't allocate string."); | |
2177 | memset (new, 0, sizeof *new); | |
2178 | strcpy (new -> string, val); | |
2179 | if (cur) { | |
2180 | cur -> next = new; | |
2181 | cur = new; | |
2182 | } else { | |
2183 | head = cur = new; | |
2184 | } | |
b3519f23 TL |
2185 | token = next_token (&val, |
2186 | (unsigned *)0, cfile); | |
31cb2a5f TL |
2187 | } while (token == COMMA); |
2188 | ||
2189 | if (token != RPAREN) { | |
2190 | parse_warn (cfile, "expecting right paren."); | |
2191 | badx: | |
2192 | skip_to_semi (cfile); | |
f579f39f | 2193 | *lose = 1; |
31cb2a5f TL |
2194 | executable_statement_dereference (result, MDL); |
2195 | return 0; | |
2196 | } | |
2197 | ||
b3519f23 | 2198 | token = next_token (&val, (unsigned *)0, cfile); |
31cb2a5f TL |
2199 | if (token != LBRACE) { |
2200 | parse_warn (cfile, "expecting left brace."); | |
2201 | goto badx; | |
2202 | } | |
2203 | ||
2204 | expr = (struct expression *)0; | |
2205 | if (!(expression_allocate (&expr, MDL))) | |
2206 | log_fatal ("can't allocate expression."); | |
2207 | expr -> op = expr_function; | |
2208 | if (!fundef_allocate (&expr -> data.func, MDL)) | |
2209 | log_fatal ("can't allocate fundef."); | |
2210 | expr -> data.func -> args = head; | |
2211 | (*result) -> data.set.expr = expr; | |
2212 | ||
2213 | if (!(parse_executable_statements | |
2214 | (&expr -> data.func -> statements, cfile, lose, | |
2215 | case_context))) { | |
2216 | if (*lose) | |
2217 | goto badx; | |
2218 | } | |
2219 | ||
b3519f23 | 2220 | token = next_token (&val, (unsigned *)0, cfile); |
31cb2a5f TL |
2221 | if (token != RBRACE) { |
2222 | parse_warn (cfile, "expecting rigt brace."); | |
2223 | goto badx; | |
2224 | } | |
2225 | } else { | |
2226 | if (token != EQUAL) { | |
2227 | parse_warn (cfile, | |
2228 | "expecting '=' in %s statement.", | |
2229 | flag ? "define" : "set"); | |
2230 | goto badset; | |
2231 | } | |
2232 | ||
2233 | if (!parse_expression (&(*result) -> data.set.expr, | |
2234 | cfile, lose, context_any, | |
2235 | (struct expression **)0, | |
2236 | expr_none)) { | |
2237 | if (!*lose) | |
2238 | parse_warn (cfile, | |
2239 | "expecting expression."); | |
2240 | else | |
2241 | *lose = 1; | |
2242 | skip_to_semi (cfile); | |
2243 | executable_statement_dereference (result, MDL); | |
2244 | return 0; | |
2245 | } | |
98311e4b DH |
2246 | if (!parse_semi (cfile)) { |
2247 | *lose = 1; | |
2248 | executable_statement_dereference (result, MDL); | |
2249 | return 0; | |
2250 | } | |
f579f39f | 2251 | } |
f579f39f TL |
2252 | break; |
2253 | ||
fdac15d9 | 2254 | case UNSET: |
b3519f23 | 2255 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 | 2256 | |
b3519f23 | 2257 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
2258 | if (token != NAME && token != NUMBER_OR_NAME) { |
2259 | parse_warn (cfile, | |
2260 | "%s can't be a variable name", val); | |
2261 | badunset: | |
2262 | skip_to_semi (cfile); | |
2263 | *lose = 1; | |
2264 | return 0; | |
2265 | } | |
2266 | ||
4bd8800e | 2267 | if (!executable_statement_allocate (result, MDL)) |
fdac15d9 TL |
2268 | log_fatal ("no memory for set statement."); |
2269 | (*result) -> op = unset_statement; | |
2270 | (*result) -> data.unset = dmalloc (strlen (val) + 1, MDL); | |
2271 | if (!(*result)->data.unset) | |
2272 | log_fatal ("can't allocate variable name"); | |
2273 | strcpy ((*result) -> data.unset, val); | |
98311e4b DH |
2274 | if (!parse_semi (cfile)) { |
2275 | *lose = 1; | |
2276 | executable_statement_dereference (result, MDL); | |
2277 | return 0; | |
2278 | } | |
fdac15d9 TL |
2279 | break; |
2280 | ||
2281 | case EVAL: | |
b3519f23 | 2282 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 | 2283 | |
4bd8800e | 2284 | if (!executable_statement_allocate (result, MDL)) |
fdac15d9 TL |
2285 | log_fatal ("no memory for eval statement."); |
2286 | (*result) -> op = eval_statement; | |
2287 | ||
2288 | if (!parse_expression (&(*result) -> data.eval, | |
2289 | cfile, lose, context_data, /* XXX */ | |
2290 | (struct expression **)0, expr_none)) { | |
2291 | if (!*lose) | |
2292 | parse_warn (cfile, | |
2293 | "expecting data expression."); | |
2294 | else | |
2295 | *lose = 1; | |
2296 | skip_to_semi (cfile); | |
4bd8800e | 2297 | executable_statement_dereference (result, MDL); |
fdac15d9 TL |
2298 | return 0; |
2299 | } | |
98311e4b DH |
2300 | if (!parse_semi (cfile)) { |
2301 | *lose = 1; | |
2302 | executable_statement_dereference (result, MDL); | |
2303 | } | |
fdac15d9 TL |
2304 | break; |
2305 | ||
253c8b6a EH |
2306 | case EXECUTE: |
2307 | #ifdef ENABLE_EXECUTE | |
2308 | token = next_token(&val, NULL, cfile); | |
2309 | ||
2310 | if (!executable_statement_allocate (result, MDL)) | |
2311 | log_fatal ("no memory for execute statement."); | |
2312 | (*result)->op = execute_statement; | |
2313 | ||
2314 | token = next_token(&val, NULL, cfile); | |
2315 | if (token != LPAREN) { | |
2316 | parse_warn(cfile, "left parenthesis expected."); | |
2317 | skip_to_semi(cfile); | |
2318 | *lose = 1; | |
2319 | return 0; | |
2320 | } | |
2321 | ||
2322 | token = next_token(&val, &len, cfile); | |
2323 | if (token != STRING) { | |
2324 | parse_warn(cfile, "Expecting a quoted string."); | |
2325 | skip_to_semi(cfile); | |
2326 | *lose = 1; | |
2327 | return 0; | |
2328 | } | |
2329 | ||
2330 | (*result)->data.execute.command = dmalloc(len + 1, MDL); | |
2331 | if ((*result)->data.execute.command == NULL) | |
2332 | log_fatal("can't allocate command name"); | |
2333 | strcpy((*result)->data.execute.command, val); | |
2334 | ||
2335 | ep = &(*result)->data.execute.arglist; | |
2336 | (*result)->data.execute.argc = 0; | |
2337 | ||
2338 | while((token = next_token(&val, NULL, cfile)) == COMMA) { | |
2339 | if (!expression_allocate(ep, MDL)) | |
2340 | log_fatal ("can't allocate expression"); | |
2341 | ||
2342 | if (!parse_data_expression (&(*ep) -> data.arg.val, | |
2343 | cfile, lose)) { | |
2344 | if (!*lose) { | |
2345 | parse_warn (cfile, | |
2346 | "expecting expression."); | |
2347 | *lose = 1; | |
2348 | } | |
2349 | skip_to_semi(cfile); | |
2350 | *lose = 1; | |
2351 | return 0; | |
2352 | } | |
2353 | ep = &(*ep)->data.arg.next; | |
2354 | (*result)->data.execute.argc++; | |
2355 | } | |
2356 | ||
2357 | if (token != RPAREN) { | |
2358 | parse_warn(cfile, "right parenthesis expected."); | |
2359 | skip_to_semi(cfile); | |
2360 | *lose = 1; | |
2361 | return 0; | |
2362 | } | |
2363 | ||
2364 | if (!parse_semi (cfile)) { | |
2365 | *lose = 1; | |
2366 | executable_statement_dereference (result, MDL); | |
2367 | } | |
2368 | #else /* ! ENABLE_EXECUTE */ | |
2369 | parse_warn(cfile, "define ENABLE_EXECUTE in site.h to " | |
2370 | "enable execute(); expressions."); | |
2371 | skip_to_semi(cfile); | |
2372 | *lose = 1; | |
2373 | return 0; | |
2374 | #endif /* ENABLE_EXECUTE */ | |
2375 | break; | |
2376 | ||
1b234d44 | 2377 | case RETURN: |
b3519f23 | 2378 | token = next_token (&val, (unsigned *)0, cfile); |
1b234d44 DN |
2379 | |
2380 | if (!executable_statement_allocate (result, MDL)) | |
2381 | log_fatal ("no memory for return statement."); | |
2382 | (*result) -> op = return_statement; | |
2383 | ||
2384 | if (!parse_expression (&(*result) -> data.retval, | |
2385 | cfile, lose, context_data, | |
2386 | (struct expression **)0, expr_none)) { | |
2387 | if (!*lose) | |
2388 | parse_warn (cfile, | |
2389 | "expecting data expression."); | |
2390 | else | |
2391 | *lose = 1; | |
2392 | skip_to_semi (cfile); | |
2393 | executable_statement_dereference (result, MDL); | |
2394 | return 0; | |
2395 | } | |
98311e4b DH |
2396 | if (!parse_semi (cfile)) { |
2397 | *lose = 1; | |
2398 | executable_statement_dereference (result, MDL); | |
2399 | return 0; | |
2400 | } | |
1b234d44 DN |
2401 | break; |
2402 | ||
e7a9c293 | 2403 | case LOG: |
b3519f23 | 2404 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2405 | |
2406 | if (!executable_statement_allocate (result, MDL)) | |
2407 | log_fatal ("no memory for log statement."); | |
2408 | (*result) -> op = log_statement; | |
2409 | ||
b3519f23 | 2410 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2411 | if (token != LPAREN) { |
2412 | parse_warn (cfile, "left parenthesis expected."); | |
2413 | skip_to_semi (cfile); | |
2414 | *lose = 1; | |
2415 | return 0; | |
2416 | } | |
2417 | ||
b3519f23 | 2418 | token = peek_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2419 | i = 1; |
2420 | if (token == FATAL) { | |
2421 | (*result) -> data.log.priority = log_priority_fatal; | |
2422 | } else if (token == ERROR) { | |
2423 | (*result) -> data.log.priority = log_priority_error; | |
2424 | } else if (token == TOKEN_DEBUG) { | |
2425 | (*result) -> data.log.priority = log_priority_debug; | |
2426 | } else if (token == INFO) { | |
2427 | (*result) -> data.log.priority = log_priority_info; | |
2428 | } else { | |
2429 | (*result) -> data.log.priority = log_priority_debug; | |
2430 | i = 0; | |
2431 | } | |
2432 | if (i) { | |
b3519f23 TL |
2433 | token = next_token (&val, (unsigned *)0, cfile); |
2434 | token = next_token (&val, (unsigned *)0, cfile); | |
e7a9c293 DN |
2435 | if (token != COMMA) { |
2436 | parse_warn (cfile, "comma expected."); | |
2437 | skip_to_semi (cfile); | |
2438 | *lose = 1; | |
2439 | return 0; | |
2440 | } | |
2441 | } | |
2442 | ||
2443 | if (!(parse_data_expression | |
2444 | (&(*result) -> data.log.expr, cfile, lose))) { | |
2445 | skip_to_semi (cfile); | |
2446 | *lose = 1; | |
2447 | return 0; | |
2448 | } | |
2449 | ||
b3519f23 | 2450 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2451 | if (token != RPAREN) { |
2452 | parse_warn (cfile, "right parenthesis expected."); | |
2453 | skip_to_semi (cfile); | |
2454 | *lose = 1; | |
2455 | return 0; | |
2456 | } | |
2457 | ||
b3519f23 | 2458 | token = next_token (&val, (unsigned *)0, cfile); |
e7a9c293 DN |
2459 | if (token != SEMI) { |
2460 | parse_warn (cfile, "semicolon expected."); | |
2461 | skip_to_semi (cfile); | |
2462 | *lose = 1; | |
2463 | return 0; | |
2464 | } | |
2465 | break; | |
5e864416 | 2466 | |
fa392aea TL |
2467 | /* Not really a statement, but we parse it here anyway |
2468 | because it's appropriate for all DHCP agents with | |
2469 | parsers. */ | |
2470 | case ZONE: | |
b3519f23 | 2471 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a | 2472 | zone = (struct dns_zone *)0; |
fa392aea TL |
2473 | if (!dns_zone_allocate (&zone, MDL)) |
2474 | log_fatal ("no memory for new zone."); | |
2475 | zone -> name = parse_host_name (cfile); | |
2476 | if (!zone -> name) { | |
e7a9c293 | 2477 | parse_warn (cfile, "expecting hostname."); |
98311e4b | 2478 | badzone: |
fa392aea TL |
2479 | *lose = 1; |
2480 | skip_to_semi (cfile); | |
2481 | dns_zone_dereference (&zone, MDL); | |
2482 | return 0; | |
2483 | } | |
88ab5737 TL |
2484 | i = strlen (zone -> name); |
2485 | if (zone -> name [i - 1] != '.') { | |
d758ad8c | 2486 | s = dmalloc ((unsigned)i + 2, MDL); |
98311e4b DH |
2487 | if (!s) { |
2488 | parse_warn (cfile, "no trailing '.' on zone"); | |
d758ad8c | 2489 | goto badzone; |
98311e4b | 2490 | } |
d758ad8c TL |
2491 | strcpy (s, zone -> name); |
2492 | s [i] = '.'; | |
2493 | s [i + 1] = 0; | |
2494 | dfree (zone -> name, MDL); | |
2495 | zone -> name = s; | |
88ab5737 | 2496 | } |
fa392aea TL |
2497 | if (!parse_zone (zone, cfile)) |
2498 | goto badzone; | |
fa392aea | 2499 | status = enter_dns_zone (zone); |
fa392aea | 2500 | if (status != ISC_R_SUCCESS) { |
98311e4b DH |
2501 | parse_warn (cfile, "dns zone key %s: %s", |
2502 | zone -> name, isc_result_totext (status)); | |
fa392aea TL |
2503 | dns_zone_dereference (&zone, MDL); |
2504 | return 0; | |
2505 | } | |
d758ad8c | 2506 | dns_zone_dereference (&zone, MDL); |
fa392aea TL |
2507 | return 1; |
2508 | ||
2509 | /* Also not really a statement, but same idea as above. */ | |
028b1f6a | 2510 | case KEY: |
b3519f23 | 2511 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a | 2512 | if (!parse_key (cfile)) { |
fa392aea | 2513 | *lose = 1; |
fa392aea TL |
2514 | return 0; |
2515 | } | |
028b1f6a | 2516 | return 1; |
e7a9c293 | 2517 | |
be6be08d | 2518 | default: |
588af269 | 2519 | if (config_universe && is_identifier (token)) { |
20916cae | 2520 | option = (struct option *)0; |
f7fdb216 DH |
2521 | option_name_hash_lookup(&option, |
2522 | config_universe->name_hash, | |
2523 | val, 0, MDL); | |
588af269 | 2524 | if (option) { |
b3519f23 TL |
2525 | token = next_token (&val, |
2526 | (unsigned *)0, cfile); | |
f7fdb216 DH |
2527 | status = parse_option_statement |
2528 | (result, cfile, 1, option, | |
2529 | supersede_option_statement); | |
2530 | option_dereference(&option, MDL); | |
2531 | return status; | |
588af269 TL |
2532 | } |
2533 | } | |
1b234d44 DN |
2534 | |
2535 | if (token == NUMBER_OR_NAME || token == NAME) { | |
2536 | /* This is rather ugly. Since function calls are | |
2537 | data expressions, fake up an eval statement. */ | |
2538 | if (!executable_statement_allocate (result, MDL)) | |
2539 | log_fatal ("no memory for eval statement."); | |
2540 | (*result) -> op = eval_statement; | |
2541 | ||
2542 | if (!parse_expression (&(*result) -> data.eval, | |
2543 | cfile, lose, context_data, | |
2544 | (struct expression **)0, | |
2545 | expr_none)) { | |
2546 | if (!*lose) | |
2547 | parse_warn (cfile, "expecting " | |
2548 | "function call."); | |
2549 | else | |
2550 | *lose = 1; | |
2551 | skip_to_semi (cfile); | |
2552 | executable_statement_dereference (result, MDL); | |
2553 | return 0; | |
2554 | } | |
98311e4b DH |
2555 | if (!parse_semi (cfile)) { |
2556 | *lose = 1; | |
2557 | executable_statement_dereference (result, MDL); | |
2558 | return 0; | |
2559 | } | |
1b234d44 DN |
2560 | break; |
2561 | } | |
2562 | ||
be6be08d | 2563 | *lose = 0; |
79a65726 | 2564 | return 0; |
be6be08d TL |
2565 | } |
2566 | ||
79a65726 TL |
2567 | return 1; |
2568 | } | |
2569 | ||
fa392aea TL |
2570 | /* zone-statements :== zone-statement | |
2571 | zone-statement zone-statements | |
2572 | zone-statement :== | |
2573 | PRIMARY ip-addresses SEMI | | |
2574 | SECONDARY ip-addresses SEMI | | |
028b1f6a TL |
2575 | key-reference SEMI |
2576 | ip-addresses :== ip-addr-or-hostname | | |
2577 | ip-addr-or-hostname COMMA ip-addresses | |
2578 | key-reference :== KEY STRING | | |
2579 | KEY identifier */ | |
fa392aea TL |
2580 | |
2581 | int parse_zone (struct dns_zone *zone, struct parse *cfile) | |
2582 | { | |
2583 | int token; | |
2584 | const char *val; | |
630786fc | 2585 | char *key_name; |
fa392aea TL |
2586 | struct option_cache *oc; |
2587 | int done = 0; | |
2588 | ||
b3519f23 | 2589 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2590 | if (token != LBRACE) { |
2591 | parse_warn (cfile, "expecting left brace"); | |
2592 | return 0; | |
2593 | } | |
2594 | ||
fa392aea | 2595 | do { |
b3519f23 | 2596 | token = peek_token (&val, (unsigned *)0, cfile); |
fa392aea TL |
2597 | switch (token) { |
2598 | case PRIMARY: | |
2599 | if (zone -> primary) { | |
2600 | parse_warn (cfile, | |
2601 | "more than one primary."); | |
2602 | skip_to_semi (cfile); | |
2603 | return 0; | |
2604 | } | |
2605 | if (!option_cache_allocate (&zone -> primary, MDL)) | |
2606 | log_fatal ("can't allocate primary option cache."); | |
2607 | oc = zone -> primary; | |
2608 | goto consemup; | |
2609 | ||
2610 | case SECONDARY: | |
2611 | if (zone -> secondary) { | |
2612 | parse_warn (cfile, "more than one secondary."); | |
2613 | skip_to_semi (cfile); | |
2614 | return 0; | |
2615 | } | |
2616 | if (!option_cache_allocate (&zone -> secondary, MDL)) | |
2617 | log_fatal ("can't allocate secondary."); | |
2618 | oc = zone -> secondary; | |
2619 | consemup: | |
b3519f23 | 2620 | token = next_token (&val, (unsigned *)0, cfile); |
fa392aea TL |
2621 | do { |
2622 | struct expression *expr = (struct expression *)0; | |
2623 | if (!parse_ip_addr_or_hostname (&expr, cfile, 0)) { | |
2624 | parse_warn (cfile, | |
2625 | "expecting IP addr or hostname."); | |
2626 | skip_to_semi (cfile); | |
2627 | return 0; | |
2628 | } | |
2629 | if (oc -> expression) { | |
2630 | struct expression *old = | |
2631 | (struct expression *)0; | |
2632 | expression_reference (&old, | |
2633 | oc -> expression, | |
2634 | MDL); | |
2635 | expression_dereference (&oc -> expression, | |
2636 | MDL); | |
2637 | if (!make_concat (&oc -> expression, | |
2638 | old, expr)) | |
2639 | log_fatal ("no memory for concat."); | |
2640 | expression_dereference (&expr, MDL); | |
2641 | expression_dereference (&old, MDL); | |
2642 | } else { | |
2643 | expression_reference (&oc -> expression, | |
2644 | expr, MDL); | |
2645 | expression_dereference (&expr, MDL); | |
2646 | } | |
b3519f23 | 2647 | token = next_token (&val, (unsigned *)0, cfile); |
fa392aea TL |
2648 | } while (token == COMMA); |
2649 | if (token != SEMI) { | |
2650 | parse_warn (cfile, "expecting semicolon."); | |
2651 | skip_to_semi (cfile); | |
2652 | return 0; | |
2653 | } | |
2654 | break; | |
2655 | ||
028b1f6a | 2656 | case KEY: |
b3519f23 TL |
2657 | token = next_token (&val, (unsigned *)0, cfile); |
2658 | token = peek_token (&val, (unsigned *)0, cfile); | |
630786fc | 2659 | if (token == STRING) { |
b3519f23 | 2660 | token = next_token (&val, (unsigned *)0, cfile); |
630786fc TL |
2661 | key_name = (char *)0; |
2662 | } else { | |
2663 | key_name = parse_host_name (cfile); | |
b49c02cc TL |
2664 | if (!key_name) { |
2665 | parse_warn (cfile, "expecting key name."); | |
2666 | skip_to_semi (cfile); | |
630786fc | 2667 | return 0; |
b49c02cc | 2668 | } |
630786fc | 2669 | val = key_name; |
fa392aea | 2670 | } |
49146f3c DN |
2671 | if (omapi_auth_key_lookup_name (&zone -> key, val) != |
2672 | ISC_R_SUCCESS) | |
fa392aea | 2673 | parse_warn (cfile, "unknown key %s", val); |
630786fc TL |
2674 | if (key_name) |
2675 | dfree (key_name, MDL); | |
fa392aea TL |
2676 | if (!parse_semi (cfile)) |
2677 | return 0; | |
2678 | break; | |
2679 | ||
2680 | default: | |
2681 | done = 1; | |
2682 | break; | |
2683 | } | |
2684 | } while (!done); | |
2685 | ||
b3519f23 | 2686 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2687 | if (token != RBRACE) { |
2688 | parse_warn (cfile, "expecting right brace."); | |
2689 | return 0; | |
2690 | } | |
fa392aea TL |
2691 | return 1; |
2692 | } | |
2693 | ||
028b1f6a TL |
2694 | /* key-statements :== key-statement | |
2695 | key-statement key-statements | |
2696 | key-statement :== | |
2697 | ALGORITHM host-name SEMI | | |
2698 | secret-definition SEMI | |
2699 | secret-definition :== SECRET base64val | | |
2700 | SECRET STRING */ | |
2701 | ||
2702 | int parse_key (struct parse *cfile) | |
2703 | { | |
2704 | int token; | |
2705 | const char *val; | |
2706 | int done = 0; | |
49146f3c DN |
2707 | struct auth_key *key; |
2708 | struct data_string ds; | |
028b1f6a | 2709 | isc_result_t status; |
2f98b84e | 2710 | char *s; |
028b1f6a | 2711 | |
49146f3c DN |
2712 | key = (struct auth_key *)0; |
2713 | if (omapi_auth_key_new (&key, MDL) != ISC_R_SUCCESS) | |
630786fc TL |
2714 | log_fatal ("no memory for key"); |
2715 | ||
b3519f23 | 2716 | token = peek_token (&val, (unsigned *)0, cfile); |
630786fc | 2717 | if (token == STRING) { |
b3519f23 | 2718 | token = next_token (&val, (unsigned *)0, cfile); |
630786fc TL |
2719 | key -> name = dmalloc (strlen (val) + 1, MDL); |
2720 | if (!key -> name) | |
2721 | log_fatal ("no memory for key name."); | |
2722 | strcpy (key -> name, val); | |
2723 | ||
2724 | } else { | |
2725 | key -> name = parse_host_name (cfile); | |
2726 | if (!key -> name) { | |
b49c02cc | 2727 | parse_warn (cfile, "expecting key name."); |
630786fc TL |
2728 | skip_to_semi (cfile); |
2729 | goto bad; | |
2730 | } | |
2731 | } | |
028b1f6a | 2732 | |
b3519f23 | 2733 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2734 | if (token != LBRACE) { |
2735 | parse_warn (cfile, "expecting left brace"); | |
630786fc | 2736 | goto bad; |
028b1f6a TL |
2737 | } |
2738 | ||
2739 | do { | |
b3519f23 | 2740 | token = next_token (&val, (unsigned *)0, cfile); |
028b1f6a TL |
2741 | switch (token) { |
2742 | case ALGORITHM: | |
2743 | if (key -> algorithm) { | |
2744 | parse_warn (cfile, | |
2745 | "key %s: too many algorithms", | |
2746 | key -> name); | |
2747 | goto rbad; | |
2748 | } | |
2749 | key -> algorithm = parse_host_name (cfile); | |
2750 | if (!key -> algorithm) { | |
2751 | parse_warn (cfile, | |
2752 | "expecting key algorithm name."); | |
2753 | goto rbad; | |
2754 | } | |
2755 | if (!parse_semi (cfile)) | |
2756 | goto rbad; | |
2f98b84e TL |
2757 | /* If the algorithm name isn't an FQDN, tack on |
2758 | the .SIG-ALG.REG.NET. domain. */ | |
35155613 | 2759 | s = strrchr (key -> algorithm, '.'); |
2f98b84e | 2760 | if (!s) { |
35155613 TL |
2761 | static char add [] = ".SIG-ALG.REG.INT."; |
2762 | s = dmalloc (strlen (key -> algorithm) + | |
2763 | sizeof (add), MDL); | |
2764 | if (!s) { | |
2765 | log_error ("no memory for key %s.", | |
2766 | "algorithm"); | |
2767 | goto rbad; | |
2768 | } | |
2769 | strcpy (s, key -> algorithm); | |
2770 | strcat (s, add); | |
2771 | dfree (key -> algorithm, MDL); | |
2772 | key -> algorithm = s; | |
2773 | } else if (s [1]) { | |
2774 | /* If there is no trailing '.', hack one in. */ | |
2775 | s = dmalloc (strlen (key -> algorithm) + 2, MDL); | |
2776 | if (!s) { | |
2777 | log_error ("no memory for key %s.", | |
2778 | key -> algorithm); | |
2779 | goto rbad; | |
2780 | } | |
2781 | strcpy (s, key -> algorithm); | |
2782 | strcat (s, "."); | |
2783 | dfree (key -> algorithm, MDL); | |
2784 | key -> algorithm = s; | |
2f98b84e | 2785 | } |
028b1f6a TL |
2786 | break; |
2787 | ||
2788 | case SECRET: | |
49146f3c | 2789 | if (key -> key) { |
028b1f6a TL |
2790 | parse_warn (cfile, "key %s: too many secrets", |
2791 | key -> name); | |
2792 | goto rbad; | |
2793 | } | |
49146f3c DN |
2794 | |
2795 | memset (&ds, 0, sizeof(ds)); | |
2796 | if (!parse_base64 (&ds, cfile)) | |
2797 | goto rbad; | |
2798 | status = omapi_data_string_new (&key -> key, ds.len, | |
2799 | MDL); | |
2800 | if (status != ISC_R_SUCCESS) | |
028b1f6a | 2801 | goto rbad; |
49146f3c DN |
2802 | memcpy (key -> key -> value, |
2803 | ds.buffer -> data, ds.len); | |
2804 | data_string_forget (&ds, MDL); | |
2805 | ||
028b1f6a TL |
2806 | if (!parse_semi (cfile)) |
2807 | goto rbad; | |
2808 | break; | |
2809 | ||
2810 | default: | |
2811 | done = 1; | |
2812 | break; | |
2813 | } | |
2814 | } while (!done); | |
2815 | if (token != RBRACE) { | |
2816 | parse_warn (cfile, "expecting right brace."); | |
2817 | goto rbad; | |
2818 | } | |
13b0934e TL |
2819 | /* Allow the BIND 8 syntax, which has a semicolon after each |
2820 | closing brace. */ | |
b3519f23 | 2821 | token = peek_token (&val, (unsigned *)0, cfile); |
13b0934e | 2822 | if (token == SEMI) |
b3519f23 | 2823 | token = next_token (&val, (unsigned *)0, cfile); |
13b0934e TL |
2824 | |
2825 | /* Remember the key. */ | |
49146f3c | 2826 | status = omapi_auth_key_enter (key); |
028b1f6a TL |
2827 | if (status != ISC_R_SUCCESS) { |
2828 | parse_warn (cfile, "tsig key %s: %s", | |
2829 | key -> name, isc_result_totext (status)); | |
2830 | goto bad; | |
2831 | } | |
d758ad8c | 2832 | omapi_auth_key_dereference (&key, MDL); |
028b1f6a TL |
2833 | return 1; |
2834 | ||
2835 | rbad: | |
2836 | skip_to_rbrace (cfile, 1); | |
2837 | bad: | |
49146f3c | 2838 | omapi_auth_key_dereference (&key, MDL); |
028b1f6a TL |
2839 | return 0; |
2840 | } | |
630786fc | 2841 | |
79a65726 | 2842 | /* |
f579f39f TL |
2843 | * on-statement :== event-types LBRACE executable-statements RBRACE |
2844 | * event-types :== event-type OR event-types | | |
2845 | * event-type | |
79a65726 TL |
2846 | * event-type :== EXPIRY | COMMIT | RELEASE |
2847 | */ | |
2848 | ||
2849 | int parse_on_statement (result, cfile, lose) | |
2850 | struct executable_statement **result; | |
4615d498 | 2851 | struct parse *cfile; |
79a65726 TL |
2852 | int *lose; |
2853 | { | |
2854 | enum dhcp_token token; | |
b1b7b521 | 2855 | const char *val; |
79a65726 | 2856 | |
4bd8800e | 2857 | if (!executable_statement_allocate (result, MDL)) |
8ae2d595 | 2858 | log_fatal ("no memory for new statement."); |
33500c7d | 2859 | (*result) -> op = on_statement; |
79a65726 | 2860 | |
f579f39f | 2861 | do { |
b3519f23 | 2862 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2863 | switch (token) { |
2864 | case EXPIRY: | |
2865 | (*result) -> data.on.evtypes |= ON_EXPIRY; | |
2866 | break; | |
79a65726 | 2867 | |
f579f39f | 2868 | case COMMIT: |
fdac15d9 | 2869 | (*result) -> data.on.evtypes |= ON_COMMIT; |
f579f39f TL |
2870 | break; |
2871 | ||
2872 | case RELEASE: | |
fdac15d9 | 2873 | (*result) -> data.on.evtypes |= ON_RELEASE; |
f579f39f TL |
2874 | break; |
2875 | ||
b49c02cc TL |
2876 | case TRANSMISSION: |
2877 | (*result) -> data.on.evtypes |= ON_TRANSMISSION; | |
2878 | break; | |
2879 | ||
f579f39f TL |
2880 | default: |
2881 | parse_warn (cfile, "expecting a lease event type"); | |
2882 | skip_to_semi (cfile); | |
2883 | *lose = 1; | |
4bd8800e | 2884 | executable_statement_dereference (result, MDL); |
fdac15d9 | 2885 | return 0; |
f579f39f | 2886 | } |
b3519f23 | 2887 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f | 2888 | } while (token == OR); |
79a65726 | 2889 | |
f579f39f TL |
2890 | /* Semicolon means no statements. */ |
2891 | if (token == SEMI) | |
2892 | return 1; | |
2893 | ||
79a65726 | 2894 | if (token != LBRACE) { |
4615d498 | 2895 | parse_warn (cfile, "left brace expected."); |
79a65726 TL |
2896 | skip_to_semi (cfile); |
2897 | *lose = 1; | |
4bd8800e | 2898 | executable_statement_dereference (result, MDL); |
79a65726 TL |
2899 | return 0; |
2900 | } | |
2901 | if (!parse_executable_statements (&(*result) -> data.on.statements, | |
f579f39f | 2902 | cfile, lose, context_any)) { |
79a65726 TL |
2903 | if (*lose) { |
2904 | /* Try to even things up. */ | |
2905 | do { | |
b3519f23 TL |
2906 | token = next_token (&val, |
2907 | (unsigned *)0, cfile); | |
0b69dcc8 | 2908 | } while (token != END_OF_FILE && token != RBRACE); |
4bd8800e | 2909 | executable_statement_dereference (result, MDL); |
79a65726 TL |
2910 | return 0; |
2911 | } | |
2912 | } | |
b3519f23 | 2913 | token = next_token (&val, (unsigned *)0, cfile); |
79a65726 | 2914 | if (token != RBRACE) { |
4615d498 | 2915 | parse_warn (cfile, "right brace expected."); |
79a65726 TL |
2916 | skip_to_semi (cfile); |
2917 | *lose = 1; | |
4bd8800e | 2918 | executable_statement_dereference (result, MDL); |
79a65726 TL |
2919 | return 0; |
2920 | } | |
2921 | return 1; | |
be6be08d TL |
2922 | } |
2923 | ||
f579f39f TL |
2924 | /* |
2925 | * switch-statement :== LPAREN expr RPAREN LBRACE executable-statements RBRACE | |
2926 | * | |
2927 | */ | |
2928 | ||
2929 | int parse_switch_statement (result, cfile, lose) | |
2930 | struct executable_statement **result; | |
2931 | struct parse *cfile; | |
2932 | int *lose; | |
2933 | { | |
2934 | enum dhcp_token token; | |
2935 | const char *val; | |
2936 | ||
4bd8800e | 2937 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
2938 | log_fatal ("no memory for new statement."); |
2939 | (*result) -> op = switch_statement; | |
2940 | ||
b3519f23 | 2941 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2942 | if (token != LPAREN) { |
2943 | parse_warn (cfile, "expecting left brace."); | |
2944 | pfui: | |
2945 | *lose = 1; | |
2946 | skip_to_semi (cfile); | |
2947 | gnorf: | |
4bd8800e | 2948 | executable_statement_dereference (result, MDL); |
f579f39f TL |
2949 | return 0; |
2950 | } | |
2951 | ||
2952 | if (!parse_expression (&(*result) -> data.s_switch.expr, | |
2953 | cfile, lose, context_data_or_numeric, | |
2954 | (struct expression **)0, expr_none)) { | |
2955 | if (!*lose) { | |
2956 | parse_warn (cfile, | |
2957 | "expecting data or numeric expression."); | |
2958 | goto pfui; | |
2959 | } | |
2960 | goto gnorf; | |
2961 | } | |
2962 | ||
b3519f23 | 2963 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2964 | if (token != RPAREN) { |
2965 | parse_warn (cfile, "right paren expected."); | |
2966 | goto pfui; | |
2967 | } | |
2968 | ||
b3519f23 | 2969 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2970 | if (token != LBRACE) { |
2971 | parse_warn (cfile, "left brace expected."); | |
2972 | goto pfui; | |
2973 | } | |
2974 | if (!(parse_executable_statements | |
2975 | (&(*result) -> data.s_switch.statements, cfile, lose, | |
2976 | (is_data_expression ((*result) -> data.s_switch.expr) | |
2977 | ? context_data : context_numeric)))) { | |
2978 | if (*lose) { | |
2979 | skip_to_rbrace (cfile, 1); | |
4bd8800e | 2980 | executable_statement_dereference (result, MDL); |
f579f39f TL |
2981 | return 0; |
2982 | } | |
2983 | } | |
b3519f23 | 2984 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
2985 | if (token != RBRACE) { |
2986 | parse_warn (cfile, "right brace expected."); | |
2987 | goto pfui; | |
2988 | } | |
2989 | return 1; | |
2990 | } | |
2991 | ||
2992 | /* | |
2993 | * case-statement :== CASE expr COLON | |
2994 | * | |
2995 | */ | |
2996 | ||
2997 | int parse_case_statement (result, cfile, lose, case_context) | |
2998 | struct executable_statement **result; | |
2999 | struct parse *cfile; | |
3000 | int *lose; | |
3001 | enum expression_context case_context; | |
3002 | { | |
3003 | enum dhcp_token token; | |
3004 | const char *val; | |
3005 | ||
4bd8800e | 3006 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
3007 | log_fatal ("no memory for new statement."); |
3008 | (*result) -> op = case_statement; | |
3009 | ||
3010 | if (!parse_expression (&(*result) -> data.c_case, | |
3011 | cfile, lose, case_context, | |
3012 | (struct expression **)0, expr_none)) | |
3013 | { | |
3014 | if (!*lose) { | |
3015 | parse_warn (cfile, "expecting %s expression.", | |
3016 | (case_context == context_data | |
3017 | ? "data" : "numeric")); | |
3018 | } | |
3019 | pfui: | |
3020 | *lose = 1; | |
3021 | skip_to_semi (cfile); | |
4bd8800e | 3022 | executable_statement_dereference (result, MDL); |
f579f39f TL |
3023 | return 0; |
3024 | } | |
3025 | ||
b3519f23 | 3026 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3027 | if (token != COLON) { |
3028 | parse_warn (cfile, "colon expected."); | |
3029 | goto pfui; | |
3030 | } | |
3031 | return 1; | |
3032 | } | |
3033 | ||
be6be08d TL |
3034 | /* |
3035 | * if-statement :== boolean-expression LBRACE executable-statements RBRACE | |
3036 | * else-statement | |
3037 | * | |
3038 | * else-statement :== <null> | | |
3039 | * ELSE LBRACE executable-statements RBRACE | | |
3040 | * ELSE IF if-statement | | |
3041 | * ELSIF if-statement | |
3042 | */ | |
3043 | ||
79a65726 TL |
3044 | int parse_if_statement (result, cfile, lose) |
3045 | struct executable_statement **result; | |
4615d498 | 3046 | struct parse *cfile; |
be6be08d TL |
3047 | int *lose; |
3048 | { | |
02a015fb | 3049 | enum dhcp_token token; |
b1b7b521 | 3050 | const char *val; |
fdac15d9 | 3051 | int parenp; |
be6be08d | 3052 | |
4bd8800e | 3053 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
3054 | log_fatal ("no memory for if statement."); |
3055 | ||
3056 | (*result) -> op = if_statement; | |
3057 | ||
b3519f23 | 3058 | token = peek_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3059 | if (token == LPAREN) { |
3060 | parenp = 1; | |
b3519f23 | 3061 | next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3062 | } else |
3063 | parenp = 0; | |
3064 | ||
3065 | ||
79a65726 TL |
3066 | if (!parse_boolean_expression (&(*result) -> data.ie.expr, |
3067 | cfile, lose)) { | |
be6be08d | 3068 | if (!*lose) |
4615d498 | 3069 | parse_warn (cfile, "boolean expression expected."); |
4bd8800e | 3070 | executable_statement_dereference (result, MDL); |
166e63eb | 3071 | *lose = 1; |
79a65726 | 3072 | return 0; |
be6be08d | 3073 | } |
02a015fb | 3074 | #if defined (DEBUG_EXPRESSION_PARSE) |
7b01f134 | 3075 | print_expression ("if condition", (*result) -> data.ie.expr); |
02a015fb | 3076 | #endif |
fdac15d9 | 3077 | if (parenp) { |
b3519f23 | 3078 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3079 | if (token != RPAREN) { |
3080 | parse_warn (cfile, "expecting right paren."); | |
3081 | *lose = 1; | |
4bd8800e | 3082 | executable_statement_dereference (result, MDL); |
fdac15d9 TL |
3083 | return 0; |
3084 | } | |
3085 | } | |
b3519f23 | 3086 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 3087 | if (token != LBRACE) { |
4615d498 | 3088 | parse_warn (cfile, "left brace expected."); |
be6be08d TL |
3089 | skip_to_semi (cfile); |
3090 | *lose = 1; | |
4bd8800e | 3091 | executable_statement_dereference (result, MDL); |
79a65726 | 3092 | return 0; |
be6be08d | 3093 | } |
d758ad8c | 3094 | if (!parse_executable_statements (&(*result) -> data.ie.tc, |
f579f39f | 3095 | cfile, lose, context_any)) { |
79a65726 TL |
3096 | if (*lose) { |
3097 | /* Try to even things up. */ | |
3098 | do { | |
b3519f23 TL |
3099 | token = next_token (&val, |
3100 | (unsigned *)0, cfile); | |
0b69dcc8 | 3101 | } while (token != END_OF_FILE && token != RBRACE); |
4bd8800e | 3102 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3103 | return 0; |
3104 | } | |
efc79acb | 3105 | } |
b3519f23 | 3106 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 3107 | if (token != RBRACE) { |
4615d498 | 3108 | parse_warn (cfile, "right brace expected."); |
be6be08d TL |
3109 | skip_to_semi (cfile); |
3110 | *lose = 1; | |
4bd8800e | 3111 | executable_statement_dereference (result, MDL); |
79a65726 | 3112 | return 0; |
be6be08d | 3113 | } |
b3519f23 | 3114 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d | 3115 | if (token == ELSE) { |
b3519f23 TL |
3116 | token = next_token (&val, (unsigned *)0, cfile); |
3117 | token = peek_token (&val, (unsigned *)0, cfile); | |
be6be08d | 3118 | if (token == IF) { |
b3519f23 | 3119 | token = next_token (&val, (unsigned *)0, cfile); |
d758ad8c | 3120 | if (!parse_if_statement (&(*result) -> data.ie.fc, |
79a65726 | 3121 | cfile, lose)) { |
166e63eb TL |
3122 | if (!*lose) |
3123 | parse_warn (cfile, | |
4bd8800e TL |
3124 | "expecting if statement"); |
3125 | executable_statement_dereference (result, MDL); | |
166e63eb TL |
3126 | *lose = 1; |
3127 | return 0; | |
79a65726 | 3128 | } |
be6be08d | 3129 | } else if (token != LBRACE) { |
4615d498 | 3130 | parse_warn (cfile, "left brace or if expected."); |
be6be08d TL |
3131 | skip_to_semi (cfile); |
3132 | *lose = 1; | |
4bd8800e | 3133 | executable_statement_dereference (result, MDL); |
79a65726 | 3134 | return 0; |
be6be08d | 3135 | } else { |
b3519f23 | 3136 | token = next_token (&val, (unsigned *)0, cfile); |
33500c7d | 3137 | if (!(parse_executable_statements |
d758ad8c | 3138 | (&(*result) -> data.ie.fc, |
f579f39f | 3139 | cfile, lose, context_any))) { |
4bd8800e | 3140 | executable_statement_dereference (result, MDL); |
79a65726 TL |
3141 | return 0; |
3142 | } | |
b3519f23 | 3143 | token = next_token (&val, (unsigned *)0, cfile); |
25541f2f | 3144 | if (token != RBRACE) { |
4615d498 | 3145 | parse_warn (cfile, "right brace expected."); |
25541f2f TL |
3146 | skip_to_semi (cfile); |
3147 | *lose = 1; | |
4bd8800e | 3148 | executable_statement_dereference (result, MDL); |
79a65726 | 3149 | return 0; |
25541f2f | 3150 | } |
be6be08d TL |
3151 | } |
3152 | } else if (token == ELSIF) { | |
b3519f23 | 3153 | token = next_token (&val, (unsigned *)0, cfile); |
d758ad8c | 3154 | if (!parse_if_statement (&(*result) -> data.ie.fc, |
79a65726 | 3155 | cfile, lose)) { |
166e63eb TL |
3156 | if (!*lose) |
3157 | parse_warn (cfile, | |
3158 | "expecting conditional."); | |
4bd8800e | 3159 | executable_statement_dereference (result, MDL); |
166e63eb TL |
3160 | *lose = 1; |
3161 | return 0; | |
79a65726 | 3162 | } |
be6be08d | 3163 | } else |
d758ad8c | 3164 | (*result) -> data.ie.fc = (struct executable_statement *)0; |
be6be08d | 3165 | |
79a65726 | 3166 | return 1; |
be6be08d TL |
3167 | } |
3168 | ||
3169 | /* | |
3170 | * boolean_expression :== CHECK STRING | | |
3171 | * NOT boolean-expression | | |
3172 | * data-expression EQUAL data-expression | | |
2b965a44 | 3173 | * data-expression BANG EQUAL data-expression | |
be6be08d TL |
3174 | * boolean-expression AND boolean-expression | |
3175 | * boolean-expression OR boolean-expression | |
02a015fb | 3176 | * EXISTS OPTION-NAME |
be6be08d TL |
3177 | */ |
3178 | ||
02a015fb TL |
3179 | int parse_boolean_expression (expr, cfile, lose) |
3180 | struct expression **expr; | |
4615d498 | 3181 | struct parse *cfile; |
02a015fb TL |
3182 | int *lose; |
3183 | { | |
3184 | /* Parse an expression... */ | |
3185 | if (!parse_expression (expr, cfile, lose, context_boolean, | |
3186 | (struct expression **)0, expr_none)) | |
3187 | return 0; | |
3188 | ||
08514fb8 TL |
3189 | if (!is_boolean_expression (*expr) && |
3190 | (*expr) -> op != expr_variable_reference && | |
3191 | (*expr) -> op != expr_funcall) { | |
4615d498 | 3192 | parse_warn (cfile, "Expecting a boolean expression."); |
02a015fb | 3193 | *lose = 1; |
4bd8800e | 3194 | expression_dereference (expr, MDL); |
02a015fb TL |
3195 | return 0; |
3196 | } | |
3197 | return 1; | |
3198 | } | |
3199 | ||
3200 | /* | |
3201 | * data_expression :== SUBSTRING LPAREN data-expression COMMA | |
3202 | * numeric-expression COMMA | |
3203 | * numeric-expression RPAREN | | |
a82abfc7 | 3204 | * CONCAT LPAREN data-expression COMMA |
2727c1cf | 3205 | * data-expression RPAREN |
02a015fb | 3206 | * SUFFIX LPAREN data_expression COMMA |
a82abfc7 | 3207 | * numeric-expression RPAREN | |
2727c1cf DH |
3208 | * LCASE LPAREN data_expression RPAREN | |
3209 | * UCASE LPAREN data_expression RPAREN | | |
02a015fb TL |
3210 | * OPTION option_name | |
3211 | * HARDWARE | | |
3212 | * PACKET LPAREN numeric-expression COMMA | |
3213 | * numeric-expression RPAREN | | |
3214 | * STRING | | |
c57db45c | 3215 | * colon_separated_hex_list |
02a015fb TL |
3216 | */ |
3217 | ||
3218 | int parse_data_expression (expr, cfile, lose) | |
3219 | struct expression **expr; | |
4615d498 | 3220 | struct parse *cfile; |
02a015fb TL |
3221 | int *lose; |
3222 | { | |
3223 | /* Parse an expression... */ | |
3224 | if (!parse_expression (expr, cfile, lose, context_data, | |
3225 | (struct expression **)0, expr_none)) | |
3226 | return 0; | |
3227 | ||
08514fb8 TL |
3228 | if (!is_data_expression (*expr) && |
3229 | (*expr) -> op != expr_variable_reference && | |
3230 | (*expr) -> op != expr_funcall) { | |
98311e4b | 3231 | expression_dereference (expr, MDL); |
4615d498 | 3232 | parse_warn (cfile, "Expecting a data expression."); |
02a015fb TL |
3233 | *lose = 1; |
3234 | return 0; | |
3235 | } | |
3236 | return 1; | |
3237 | } | |
3238 | ||
3239 | /* | |
3240 | * numeric-expression :== EXTRACT_INT LPAREN data-expression | |
3241 | * COMMA number RPAREN | | |
3242 | * NUMBER | |
3243 | */ | |
3244 | ||
3245 | int parse_numeric_expression (expr, cfile, lose) | |
3246 | struct expression **expr; | |
4615d498 | 3247 | struct parse *cfile; |
02a015fb TL |
3248 | int *lose; |
3249 | { | |
3250 | /* Parse an expression... */ | |
3251 | if (!parse_expression (expr, cfile, lose, context_numeric, | |
3252 | (struct expression **)0, expr_none)) | |
3253 | return 0; | |
3254 | ||
08514fb8 TL |
3255 | if (!is_numeric_expression (*expr) && |
3256 | (*expr) -> op != expr_variable_reference && | |
3257 | (*expr) -> op != expr_funcall) { | |
98311e4b | 3258 | expression_dereference (expr, MDL); |
4615d498 | 3259 | parse_warn (cfile, "Expecting a numeric expression."); |
02a015fb TL |
3260 | *lose = 1; |
3261 | return 0; | |
3262 | } | |
3263 | return 1; | |
3264 | } | |
3265 | ||
9fb2fb28 TL |
3266 | /* |
3267 | * dns-expression :== | |
3268 | * UPDATE LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
3269 | * data-expression COMMA numeric-expression RPAREN | |
3270 | * DELETE LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
3271 | * data-expression RPAREN | |
3272 | * EXISTS LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
3273 | * data-expression RPAREN | |
3274 | * NOT EXISTS LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
3275 | * data-expression RPAREN | |
3276 | * ns-class :== IN | CHAOS | HS | NUMBER | |
3277 | * ns-type :== A | PTR | MX | TXT | NUMBER | |
3278 | */ | |
3279 | ||
3280 | int parse_dns_expression (expr, cfile, lose) | |
3281 | struct expression **expr; | |
3282 | struct parse *cfile; | |
3283 | int *lose; | |
3284 | { | |
3285 | /* Parse an expression... */ | |
3286 | if (!parse_expression (expr, cfile, lose, context_dns, | |
3287 | (struct expression **)0, expr_none)) | |
3288 | return 0; | |
3289 | ||
08514fb8 TL |
3290 | if (!is_dns_expression (*expr) && |
3291 | (*expr) -> op != expr_variable_reference && | |
3292 | (*expr) -> op != expr_funcall) { | |
98311e4b | 3293 | expression_dereference (expr, MDL); |
9fb2fb28 TL |
3294 | parse_warn (cfile, "Expecting a dns update subexpression."); |
3295 | *lose = 1; | |
3296 | return 0; | |
3297 | } | |
3298 | return 1; | |
3299 | } | |
3300 | ||
02a015fb | 3301 | /* Parse a subexpression that does not contain a binary operator. */ |
be6be08d | 3302 | |
02a015fb TL |
3303 | int parse_non_binary (expr, cfile, lose, context) |
3304 | struct expression **expr; | |
4615d498 | 3305 | struct parse *cfile; |
be6be08d | 3306 | int *lose; |
02a015fb | 3307 | enum expression_context context; |
be6be08d | 3308 | { |
02a015fb | 3309 | enum dhcp_token token; |
b1b7b521 | 3310 | const char *val; |
be6be08d | 3311 | struct collection *col; |
02a015fb | 3312 | struct option *option; |
08514fb8 | 3313 | struct expression *nexp, **ep; |
b1b7b521 | 3314 | int known; |
9fb2fb28 | 3315 | enum expr_op opcode; |
f579f39f | 3316 | const char *s; |
08514fb8 | 3317 | char *cptr; |
fdac15d9 TL |
3318 | struct executable_statement *stmt; |
3319 | int i; | |
08514fb8 | 3320 | unsigned long u; |
9a7f6fcd | 3321 | isc_result_t status, code; |
b3519f23 | 3322 | unsigned len; |
be6be08d | 3323 | |
b3519f23 | 3324 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3325 | |
3326 | /* Check for unary operators... */ | |
3327 | switch (token) { | |
3328 | case CHECK: | |
b3519f23 TL |
3329 | token = next_token (&val, (unsigned *)0, cfile); |
3330 | token = next_token (&val, (unsigned *)0, cfile); | |
be6be08d | 3331 | if (token != STRING) { |
4615d498 | 3332 | parse_warn (cfile, "string expected."); |
be6be08d TL |
3333 | skip_to_semi (cfile); |
3334 | *lose = 1; | |
02a015fb | 3335 | return 0; |
be6be08d TL |
3336 | } |
3337 | for (col = collections; col; col = col -> next) | |
3338 | if (!strcmp (col -> name, val)) | |
3339 | break; | |
3340 | if (!col) { | |
4615d498 | 3341 | parse_warn (cfile, "unknown collection."); |
be6be08d | 3342 | *lose = 1; |
02a015fb | 3343 | return 0; |
be6be08d | 3344 | } |
4bd8800e | 3345 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3346 | log_fatal ("can't allocate expression"); |
02a015fb TL |
3347 | (*expr) -> op = expr_check; |
3348 | (*expr) -> data.check = col; | |
3349 | break; | |
be6be08d | 3350 | |
5e6fb153 | 3351 | case TOKEN_NOT: |
b3519f23 | 3352 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 | 3353 | if (context == context_dns) { |
b3519f23 | 3354 | token = peek_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3355 | goto not_exists; |
3356 | } | |
4bd8800e | 3357 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3358 | log_fatal ("can't allocate expression"); |
02a015fb TL |
3359 | (*expr) -> op = expr_not; |
3360 | if (!parse_non_binary (&(*expr) -> data.not, | |
9a7f6fcd | 3361 | cfile, lose, context_boolean)) { |
be6be08d | 3362 | if (!*lose) { |
4615d498 | 3363 | parse_warn (cfile, "expression expected"); |
be6be08d TL |
3364 | skip_to_semi (cfile); |
3365 | } | |
3366 | *lose = 1; | |
4bd8800e | 3367 | expression_dereference (expr, MDL); |
02a015fb | 3368 | return 0; |
be6be08d | 3369 | } |
9a7f6fcd TL |
3370 | if (!is_boolean_expression ((*expr) -> data.not)) { |
3371 | *lose = 1; | |
3372 | parse_warn (cfile, "boolean expression expected"); | |
3373 | skip_to_semi (cfile); | |
3374 | expression_dereference (expr, MDL); | |
3375 | return 0; | |
3376 | } | |
be6be08d | 3377 | break; |
be6be08d | 3378 | |
fcd9651f | 3379 | case LPAREN: |
b3519f23 | 3380 | token = next_token (&val, (unsigned *)0, cfile); |
fcd9651f TL |
3381 | if (!parse_expression (expr, cfile, lose, context, |
3382 | (struct expression **)0, expr_none)) { | |
3383 | if (!*lose) { | |
3384 | parse_warn (cfile, "expression expected"); | |
3385 | skip_to_semi (cfile); | |
3386 | } | |
3387 | *lose = 1; | |
3388 | return 0; | |
3389 | } | |
b3519f23 | 3390 | token = next_token (&val, (unsigned *)0, cfile); |
fcd9651f TL |
3391 | if (token != RPAREN) { |
3392 | *lose = 1; | |
3393 | parse_warn (cfile, "right paren expected"); | |
3394 | skip_to_semi (cfile); | |
3395 | return 0; | |
3396 | } | |
3397 | break; | |
3398 | ||
02a015fb | 3399 | case EXISTS: |
9fb2fb28 TL |
3400 | if (context == context_dns) |
3401 | goto ns_exists; | |
b3519f23 | 3402 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3403 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3404 | log_fatal ("can't allocate expression"); |
02a015fb | 3405 | (*expr) -> op = expr_exists; |
b1b7b521 | 3406 | known = 0; |
f7fdb216 DH |
3407 | /* Pass reference directly to expression structure. */ |
3408 | status = parse_option_name(cfile, 0, &known, | |
3409 | &(*expr)->data.option); | |
3410 | if (status != ISC_R_SUCCESS || | |
3411 | (*expr)->data.option == NULL) { | |
02a015fb | 3412 | *lose = 1; |
4bd8800e | 3413 | expression_dereference (expr, MDL); |
02a015fb | 3414 | return 0; |
be6be08d | 3415 | } |
02a015fb | 3416 | break; |
be6be08d | 3417 | |
1c5d5731 | 3418 | case STATIC: |
b3519f23 | 3419 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3420 | if (!expression_allocate (expr, MDL)) |
1c5d5731 TL |
3421 | log_fatal ("can't allocate expression"); |
3422 | (*expr) -> op = expr_static; | |
3423 | break; | |
3424 | ||
70330633 | 3425 | case KNOWN: |
b3519f23 | 3426 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3427 | if (!expression_allocate (expr, MDL)) |
70330633 TL |
3428 | log_fatal ("can't allocate expression"); |
3429 | (*expr) -> op = expr_known; | |
3430 | break; | |
3431 | ||
be6be08d | 3432 | case SUBSTRING: |
b3519f23 | 3433 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3434 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3435 | log_fatal ("can't allocate expression"); |
02a015fb | 3436 | (*expr) -> op = expr_substring; |
be6be08d | 3437 | |
b3519f23 | 3438 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3439 | if (token != LPAREN) { |
3440 | nolparen: | |
4bd8800e | 3441 | expression_dereference (expr, MDL); |
4615d498 | 3442 | parse_warn (cfile, "left parenthesis expected."); |
be6be08d | 3443 | *lose = 1; |
02a015fb | 3444 | return 0; |
be6be08d TL |
3445 | } |
3446 | ||
02a015fb TL |
3447 | if (!parse_data_expression (&(*expr) -> data.substring.expr, |
3448 | cfile, lose)) { | |
be6be08d | 3449 | nodata: |
4bd8800e | 3450 | expression_dereference (expr, MDL); |
962dc4ab TL |
3451 | if (!*lose) { |
3452 | parse_warn (cfile, | |
3453 | "expecting data expression."); | |
3454 | skip_to_semi (cfile); | |
3455 | *lose = 1; | |
3456 | } | |
02a015fb | 3457 | return 0; |
be6be08d TL |
3458 | } |
3459 | ||
b3519f23 | 3460 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3461 | if (token != COMMA) { |
3462 | nocomma: | |
4bd8800e | 3463 | expression_dereference (expr, MDL); |
4615d498 | 3464 | parse_warn (cfile, "comma expected."); |
be6be08d | 3465 | *lose = 1; |
02a015fb TL |
3466 | |
3467 | return 0; | |
be6be08d TL |
3468 | } |
3469 | ||
02a015fb TL |
3470 | if (!parse_numeric_expression |
3471 | (&(*expr) -> data.substring.offset,cfile, lose)) { | |
be6be08d TL |
3472 | nonum: |
3473 | if (!*lose) { | |
4615d498 TL |
3474 | parse_warn (cfile, |
3475 | "expecting numeric expression."); | |
be6be08d TL |
3476 | skip_to_semi (cfile); |
3477 | *lose = 1; | |
3478 | } | |
4bd8800e | 3479 | expression_dereference (expr, MDL); |
02a015fb | 3480 | return 0; |
be6be08d TL |
3481 | } |
3482 | ||
b3519f23 | 3483 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3484 | if (token != COMMA) |
3485 | goto nocomma; | |
3486 | ||
02a015fb TL |
3487 | if (!parse_numeric_expression |
3488 | (&(*expr) -> data.substring.len, cfile, lose)) | |
be6be08d TL |
3489 | goto nonum; |
3490 | ||
b3519f23 | 3491 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3492 | if (token != RPAREN) { |
3493 | norparen: | |
4615d498 | 3494 | parse_warn (cfile, "right parenthesis expected."); |
be6be08d | 3495 | *lose = 1; |
4bd8800e | 3496 | expression_dereference (expr, MDL); |
02a015fb | 3497 | return 0; |
be6be08d | 3498 | } |
02a015fb | 3499 | break; |
be6be08d TL |
3500 | |
3501 | case SUFFIX: | |
b3519f23 | 3502 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3503 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3504 | log_fatal ("can't allocate expression"); |
02a015fb | 3505 | (*expr) -> op = expr_suffix; |
be6be08d | 3506 | |
b3519f23 | 3507 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3508 | if (token != LPAREN) |
3509 | goto nolparen; | |
3510 | ||
02a015fb TL |
3511 | if (!parse_data_expression (&(*expr) -> data.suffix.expr, |
3512 | cfile, lose)) | |
be6be08d TL |
3513 | goto nodata; |
3514 | ||
b3519f23 | 3515 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3516 | if (token != COMMA) |
3517 | goto nocomma; | |
3518 | ||
b0f452b3 TL |
3519 | if (!parse_numeric_expression (&(*expr) -> data.suffix.len, |
3520 | cfile, lose)) | |
be6be08d TL |
3521 | goto nonum; |
3522 | ||
b3519f23 | 3523 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
3524 | if (token != RPAREN) |
3525 | goto norparen; | |
02a015fb | 3526 | break; |
be6be08d | 3527 | |
2727c1cf DH |
3528 | case LCASE: |
3529 | token = next_token(&val, (unsigned *)0, cfile); | |
3530 | if (!expression_allocate(expr, MDL)) | |
3531 | log_fatal ("can't allocate expression"); | |
3532 | (*expr)->op = expr_lcase; | |
3533 | ||
3534 | token = next_token(&val, (unsigned *)0, cfile); | |
3535 | if (token != LPAREN) | |
3536 | goto nolparen; | |
3537 | ||
3538 | if (!parse_data_expression(&(*expr)->data.lcase, cfile, lose)) | |
3539 | goto nodata; | |
3540 | ||
3541 | token = next_token(&val, (unsigned *)0, cfile); | |
3542 | if (token != RPAREN) | |
3543 | goto norparen; | |
3544 | break; | |
3545 | ||
3546 | case UCASE: | |
3547 | token = next_token(&val, (unsigned *)0, cfile); | |
3548 | if (!expression_allocate(expr, MDL)) | |
3549 | log_fatal ("can't allocate expression"); | |
3550 | (*expr)->op = expr_ucase; | |
3551 | ||
3552 | token = next_token (&val, (unsigned *)0, cfile); | |
3553 | if (token != LPAREN) | |
3554 | goto nolparen; | |
3555 | ||
3556 | if (!parse_data_expression(&(*expr)->data.ucase, | |
3557 | cfile, lose)) | |
3558 | goto nodata; | |
3559 | ||
3560 | token = next_token(&val, (unsigned *)0, cfile); | |
3561 | if (token != RPAREN) | |
3562 | goto norparen; | |
3563 | break; | |
3564 | ||
a82abfc7 | 3565 | case CONCAT: |
b3519f23 | 3566 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3567 | if (!expression_allocate (expr, MDL)) |
a82abfc7 TL |
3568 | log_fatal ("can't allocate expression"); |
3569 | (*expr) -> op = expr_concat; | |
3570 | ||
b3519f23 | 3571 | token = next_token (&val, (unsigned *)0, cfile); |
a82abfc7 TL |
3572 | if (token != LPAREN) |
3573 | goto nolparen; | |
3574 | ||
3575 | if (!parse_data_expression (&(*expr) -> data.concat [0], | |
3576 | cfile, lose)) | |
3577 | goto nodata; | |
3578 | ||
b3519f23 | 3579 | token = next_token (&val, (unsigned *)0, cfile); |
a82abfc7 TL |
3580 | if (token != COMMA) |
3581 | goto nocomma; | |
3582 | ||
720c8262 | 3583 | concat_another: |
a82abfc7 TL |
3584 | if (!parse_data_expression (&(*expr) -> data.concat [1], |
3585 | cfile, lose)) | |
3586 | goto nodata; | |
3587 | ||
b3519f23 | 3588 | token = next_token (&val, (unsigned *)0, cfile); |
720c8262 TL |
3589 | |
3590 | if (token == COMMA) { | |
3591 | nexp = (struct expression *)0; | |
4bd8800e | 3592 | if (!expression_allocate (&nexp, MDL)) |
720c8262 TL |
3593 | log_fatal ("can't allocate at CONCAT2"); |
3594 | nexp -> op = expr_concat; | |
4bd8800e TL |
3595 | expression_reference (&nexp -> data.concat [0], |
3596 | *expr, MDL); | |
3597 | expression_dereference (expr, MDL); | |
3598 | expression_reference (expr, nexp, MDL); | |
d758ad8c | 3599 | expression_dereference (&nexp, MDL); |
720c8262 TL |
3600 | goto concat_another; |
3601 | } | |
3602 | ||
a82abfc7 TL |
3603 | if (token != RPAREN) |
3604 | goto norparen; | |
3605 | break; | |
3606 | ||
da38df14 | 3607 | case BINARY_TO_ASCII: |
b3519f23 | 3608 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3609 | if (!expression_allocate (expr, MDL)) |
da38df14 | 3610 | log_fatal ("can't allocate expression"); |
eb42f00e | 3611 | (*expr) -> op = expr_binary_to_ascii; |
da38df14 | 3612 | |
b3519f23 | 3613 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3614 | if (token != LPAREN) |
3615 | goto nolparen; | |
3616 | ||
3617 | if (!parse_numeric_expression (&(*expr) -> data.b2a.base, | |
3618 | cfile, lose)) | |
3619 | goto nodata; | |
3620 | ||
b3519f23 | 3621 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3622 | if (token != COMMA) |
3623 | goto nocomma; | |
3624 | ||
3625 | if (!parse_numeric_expression (&(*expr) -> data.b2a.width, | |
3626 | cfile, lose)) | |
3627 | goto nodata; | |
3628 | ||
b3519f23 | 3629 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3630 | if (token != COMMA) |
3631 | goto nocomma; | |
3632 | ||
c57db45c | 3633 | if (!parse_data_expression (&(*expr) -> data.b2a.separator, |
da38df14 TL |
3634 | cfile, lose)) |
3635 | goto nodata; | |
3636 | ||
b3519f23 | 3637 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3638 | if (token != COMMA) |
3639 | goto nocomma; | |
3640 | ||
3641 | if (!parse_data_expression (&(*expr) -> data.b2a.buffer, | |
3642 | cfile, lose)) | |
3643 | goto nodata; | |
3644 | ||
b3519f23 | 3645 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3646 | if (token != RPAREN) |
3647 | goto norparen; | |
3648 | break; | |
3649 | ||
3650 | case REVERSE: | |
b3519f23 | 3651 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3652 | if (!expression_allocate (expr, MDL)) |
da38df14 | 3653 | log_fatal ("can't allocate expression"); |
eb42f00e | 3654 | (*expr) -> op = expr_reverse; |
da38df14 | 3655 | |
b3519f23 | 3656 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3657 | if (token != LPAREN) |
3658 | goto nolparen; | |
3659 | ||
3660 | if (!(parse_numeric_expression | |
3661 | (&(*expr) -> data.reverse.width, cfile, lose))) | |
3662 | goto nodata; | |
3663 | ||
b3519f23 | 3664 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3665 | if (token != COMMA) |
3666 | goto nocomma; | |
3667 | ||
3668 | if (!(parse_data_expression | |
3669 | (&(*expr) -> data.reverse.buffer, cfile, lose))) | |
3670 | goto nodata; | |
3671 | ||
b3519f23 | 3672 | token = next_token (&val, (unsigned *)0, cfile); |
da38df14 TL |
3673 | if (token != RPAREN) |
3674 | goto norparen; | |
3675 | break; | |
3676 | ||
fdac15d9 | 3677 | case PICK: |
79a65726 TL |
3678 | /* pick (a, b, c) actually produces an internal representation |
3679 | that looks like pick (a, pick (b, pick (c, nil))). */ | |
b3519f23 | 3680 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3681 | if (!(expression_allocate (expr, MDL))) |
79a65726 | 3682 | log_fatal ("can't allocate expression"); |
79a65726 | 3683 | |
b3519f23 | 3684 | token = next_token (&val, (unsigned *)0, cfile); |
79a65726 TL |
3685 | if (token != LPAREN) |
3686 | goto nolparen; | |
3687 | ||
d758ad8c TL |
3688 | nexp = (struct expression *)0; |
3689 | expression_reference (&nexp, *expr, MDL); | |
79a65726 | 3690 | do { |
d758ad8c TL |
3691 | nexp -> op = expr_pick_first_value; |
3692 | if (!(parse_data_expression | |
3693 | (&nexp -> data.pick_first_value.car, | |
3694 | cfile, lose))) | |
3695 | goto nodata; | |
79a65726 | 3696 | |
d758ad8c TL |
3697 | token = next_token (&val, (unsigned *)0, cfile); |
3698 | if (token == COMMA) { | |
3699 | struct expression *foo = (struct expression *)0; | |
3700 | if (!expression_allocate (&foo, MDL)) | |
3701 | log_fatal ("can't allocate expr"); | |
3702 | expression_reference | |
3703 | (&nexp -> data.pick_first_value.cdr, foo, MDL); | |
3704 | expression_dereference (&nexp, MDL); | |
3705 | expression_reference (&nexp, foo, MDL); | |
3706 | expression_dereference (&foo, MDL); | |
3707 | } | |
79a65726 | 3708 | } while (token == COMMA); |
d758ad8c | 3709 | expression_dereference (&nexp, MDL); |
79a65726 TL |
3710 | |
3711 | if (token != RPAREN) | |
3712 | goto norparen; | |
3713 | break; | |
3714 | ||
9fb2fb28 TL |
3715 | /* dns-update and dns-delete are present for historical |
3716 | purposes, but are deprecated in favor of ns-update | |
3717 | in combination with update, delete, exists and not | |
3718 | exists. */ | |
069e9f4c | 3719 | case DNS_UPDATE: |
9fb2fb28 | 3720 | case DNS_DELETE: |
069e9f4c | 3721 | #if !defined (NSUPDATE) |
4615d498 TL |
3722 | parse_warn (cfile, |
3723 | "Please rebuild dhcpd with --with-nsupdate."); | |
069e9f4c | 3724 | #endif |
b3519f23 | 3725 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 | 3726 | if (token == DNS_UPDATE) |
f579f39f | 3727 | opcode = expr_ns_add; |
9fb2fb28 TL |
3728 | else |
3729 | opcode = expr_ns_delete; | |
3730 | ||
b3519f23 | 3731 | token = next_token (&val, (unsigned *)0, cfile); |
069e9f4c TL |
3732 | if (token != LPAREN) |
3733 | goto nolparen; | |
3734 | ||
b3519f23 | 3735 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3736 | if (token != STRING) { |
3737 | parse_warn (cfile, | |
3738 | "parse_expression: expecting string."); | |
3739 | badnsupdate: | |
069e9f4c TL |
3740 | skip_to_semi (cfile); |
3741 | *lose = 1; | |
3742 | return 0; | |
3743 | } | |
9fb2fb28 TL |
3744 | |
3745 | if (!strcasecmp (val, "a")) | |
08514fb8 | 3746 | u = T_A; |
98bd7ca0 DH |
3747 | else if (!strcasecmp (val, "aaaa")) |
3748 | u = T_AAAA; | |
9fb2fb28 | 3749 | else if (!strcasecmp (val, "ptr")) |
08514fb8 | 3750 | u = T_PTR; |
9fb2fb28 | 3751 | else if (!strcasecmp (val, "mx")) |
08514fb8 | 3752 | u = T_MX; |
9fb2fb28 | 3753 | else if (!strcasecmp (val, "cname")) |
08514fb8 | 3754 | u = T_CNAME; |
9fb2fb28 | 3755 | else if (!strcasecmp (val, "TXT")) |
08514fb8 | 3756 | u = T_TXT; |
9fb2fb28 TL |
3757 | else { |
3758 | parse_warn (cfile, "unexpected rrtype: %s", val); | |
3759 | goto badnsupdate; | |
3760 | } | |
fdac15d9 | 3761 | |
08514fb8 TL |
3762 | s = (opcode == expr_ns_add |
3763 | ? "old-dns-update" | |
3764 | : "old-dns-delete"); | |
3765 | cptr = dmalloc (strlen (s) + 1, MDL); | |
3766 | if (!cptr) | |
3767 | log_fatal ("can't allocate name for %s", s); | |
3768 | strcpy (cptr, s); | |
4bd8800e | 3769 | if (!expression_allocate (expr, MDL)) |
fdac15d9 | 3770 | log_fatal ("can't allocate expression"); |
fdac15d9 | 3771 | (*expr) -> op = expr_funcall; |
08514fb8 | 3772 | (*expr) -> data.funcall.name = cptr; |
fdac15d9 | 3773 | |
08514fb8 TL |
3774 | /* Fake up a function call. */ |
3775 | ep = &(*expr) -> data.funcall.arglist; | |
3776 | if (!expression_allocate (ep, MDL)) | |
3777 | log_fatal ("can't allocate expression"); | |
3778 | (*ep) -> op = expr_arg; | |
3779 | if (!make_const_int (&(*ep) -> data.arg.val, u)) | |
fdac15d9 | 3780 | log_fatal ("can't allocate rrtype value."); |
069e9f4c | 3781 | |
b3519f23 | 3782 | token = next_token (&val, (unsigned *)0, cfile); |
069e9f4c TL |
3783 | if (token != COMMA) |
3784 | goto nocomma; | |
08514fb8 TL |
3785 | ep = &((*ep) -> data.arg.next); |
3786 | if (!expression_allocate (ep, MDL)) | |
3787 | log_fatal ("can't allocate expression"); | |
3788 | (*ep) -> op = expr_arg; | |
3789 | if (!(parse_data_expression (&(*ep) -> data.arg.val, | |
fdac15d9 | 3790 | cfile, lose))) |
069e9f4c TL |
3791 | goto nodata; |
3792 | ||
b3519f23 | 3793 | token = next_token (&val, (unsigned *)0, cfile); |
069e9f4c TL |
3794 | if (token != COMMA) |
3795 | goto nocomma; | |
3796 | ||
08514fb8 TL |
3797 | ep = &((*ep) -> data.arg.next); |
3798 | if (!expression_allocate (ep, MDL)) | |
3799 | log_fatal ("can't allocate expression"); | |
3800 | (*ep) -> op = expr_arg; | |
3801 | if (!(parse_data_expression (&(*ep) -> data.arg.val, | |
fdac15d9 | 3802 | cfile, lose))) |
069e9f4c TL |
3803 | goto nodata; |
3804 | ||
f579f39f | 3805 | if (opcode == expr_ns_add) { |
b3519f23 | 3806 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3807 | if (token != COMMA) |
3808 | goto nocomma; | |
3809 | ||
08514fb8 TL |
3810 | ep = &((*ep) -> data.arg.next); |
3811 | if (!expression_allocate (ep, MDL)) | |
3812 | log_fatal ("can't allocate expression"); | |
3813 | (*ep) -> op = expr_arg; | |
3814 | if (!(parse_numeric_expression (&(*ep) -> data.arg.val, | |
3815 | cfile, lose))) { | |
9fb2fb28 | 3816 | parse_warn (cfile, |
fdac15d9 | 3817 | "expecting numeric expression."); |
9fb2fb28 TL |
3818 | goto badnsupdate; |
3819 | } | |
069e9f4c | 3820 | } |
08514fb8 | 3821 | |
b3519f23 | 3822 | token = next_token (&val, (unsigned *)0, cfile); |
069e9f4c TL |
3823 | if (token != RPAREN) |
3824 | goto norparen; | |
3825 | break; | |
3826 | ||
9fb2fb28 | 3827 | case NS_UPDATE: |
88886e12 TL |
3828 | #if !defined (NSUPDATE) |
3829 | parse_warn (cfile, | |
3830 | "Please rebuild dhcpd with --with-nsupdate."); | |
3831 | #endif | |
b3519f23 | 3832 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 3833 | if (!expression_allocate (expr, MDL)) |
88886e12 | 3834 | log_fatal ("can't allocate expression"); |
88886e12 | 3835 | |
b3519f23 | 3836 | token = next_token (&val, (unsigned *)0, cfile); |
88886e12 TL |
3837 | if (token != LPAREN) |
3838 | goto nolparen; | |
3839 | ||
9fb2fb28 TL |
3840 | nexp = *expr; |
3841 | do { | |
3842 | nexp -> op = expr_dns_transaction; | |
3843 | if (!(parse_dns_expression | |
3844 | (&nexp -> data.dns_transaction.car, | |
3845 | cfile, lose))) | |
3846 | { | |
f579f39f TL |
3847 | if (!*lose) |
3848 | parse_warn | |
3849 | (cfile, | |
3850 | "expecting dns expression."); | |
9fb2fb28 | 3851 | badnstrans: |
4bd8800e | 3852 | expression_dereference (expr, MDL); |
9fb2fb28 TL |
3853 | *lose = 1; |
3854 | return 0; | |
3855 | } | |
3856 | ||
b3519f23 | 3857 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3858 | |
3859 | if (token == COMMA) { | |
3860 | if (!(expression_allocate | |
3861 | (&nexp -> data.dns_transaction.cdr, | |
4bd8800e | 3862 | MDL))) |
9fb2fb28 TL |
3863 | log_fatal |
3864 | ("can't allocate expression"); | |
3865 | nexp = nexp -> data.dns_transaction.cdr; | |
3866 | } | |
3867 | } while (token == COMMA); | |
3868 | ||
3869 | if (token != RPAREN) | |
3870 | goto norparen; | |
3871 | break; | |
3872 | ||
3873 | /* NOT EXISTS is special cased above... */ | |
3874 | not_exists: | |
b3519f23 | 3875 | token = peek_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
3876 | if (token != EXISTS) { |
3877 | parse_warn (cfile, "expecting DNS prerequisite."); | |
3878 | *lose = 1; | |
3879 | return 0; | |
3880 | } | |
9fb2fb28 TL |
3881 | opcode = expr_ns_not_exists; |
3882 | goto nsupdatecode; | |
f579f39f TL |
3883 | case TOKEN_ADD: |
3884 | opcode = expr_ns_add; | |
9fb2fb28 TL |
3885 | goto nsupdatecode; |
3886 | case TOKEN_DELETE: | |
3887 | opcode = expr_ns_delete; | |
3888 | goto nsupdatecode; | |
3889 | ns_exists: | |
3890 | opcode = expr_ns_exists; | |
3891 | nsupdatecode: | |
b3519f23 | 3892 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3893 | |
3894 | #if !defined (NSUPDATE) | |
3895 | parse_warn (cfile, | |
3896 | "Please rebuild dhcpd with --with-nsupdate."); | |
3897 | #endif | |
4bd8800e | 3898 | if (!expression_allocate (expr, MDL)) |
9fb2fb28 TL |
3899 | log_fatal ("can't allocate expression"); |
3900 | (*expr) -> op = opcode; | |
3901 | ||
b3519f23 | 3902 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3903 | if (token != LPAREN) |
3904 | goto nolparen; | |
3905 | ||
b3519f23 | 3906 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3907 | if (!is_identifier (token) && token != NUMBER) { |
3908 | parse_warn (cfile, "expecting identifier or number."); | |
3909 | badnsop: | |
4bd8800e | 3910 | expression_dereference (expr, MDL); |
88886e12 TL |
3911 | skip_to_semi (cfile); |
3912 | *lose = 1; | |
3913 | return 0; | |
3914 | } | |
9fb2fb28 TL |
3915 | |
3916 | if (token == NUMBER) | |
f579f39f | 3917 | (*expr) -> data.ns_add.rrclass = atoi (val); |
9fb2fb28 | 3918 | else if (!strcasecmp (val, "in")) |
f579f39f | 3919 | (*expr) -> data.ns_add.rrclass = C_IN; |
9fb2fb28 | 3920 | else if (!strcasecmp (val, "chaos")) |
f579f39f | 3921 | (*expr) -> data.ns_add.rrclass = C_CHAOS; |
9fb2fb28 | 3922 | else if (!strcasecmp (val, "hs")) |
f579f39f | 3923 | (*expr) -> data.ns_add.rrclass = C_HS; |
9fb2fb28 TL |
3924 | else { |
3925 | parse_warn (cfile, "unexpected rrclass: %s", val); | |
3926 | goto badnsop; | |
3927 | } | |
3928 | ||
b3519f23 | 3929 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
3930 | if (token != COMMA) |
3931 | goto nocomma; | |
3932 | ||
b3519f23 | 3933 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3934 | if (!is_identifier (token) && token != NUMBER) { |
3935 | parse_warn (cfile, "expecting identifier or number."); | |
3936 | goto badnsop; | |
3937 | } | |
3938 | ||
3939 | if (token == NUMBER) | |
f579f39f | 3940 | (*expr) -> data.ns_add.rrtype = atoi (val); |
9fb2fb28 | 3941 | else if (!strcasecmp (val, "a")) |
f579f39f | 3942 | (*expr) -> data.ns_add.rrtype = T_A; |
98bd7ca0 DH |
3943 | else if (!strcasecmp (val, "aaaa")) |
3944 | (*expr) -> data.ns_add.rrtype = T_AAAA; | |
9fb2fb28 | 3945 | else if (!strcasecmp (val, "ptr")) |
f579f39f | 3946 | (*expr) -> data.ns_add.rrtype = T_PTR; |
9fb2fb28 | 3947 | else if (!strcasecmp (val, "mx")) |
f579f39f | 3948 | (*expr) -> data.ns_add.rrtype = T_MX; |
9fb2fb28 | 3949 | else if (!strcasecmp (val, "cname")) |
f579f39f | 3950 | (*expr) -> data.ns_add.rrtype = T_CNAME; |
9fb2fb28 | 3951 | else if (!strcasecmp (val, "TXT")) |
f579f39f | 3952 | (*expr) -> data.ns_add.rrtype = T_TXT; |
9fb2fb28 TL |
3953 | else { |
3954 | parse_warn (cfile, "unexpected rrtype: %s", val); | |
3955 | goto badnsop; | |
3956 | } | |
88886e12 | 3957 | |
b3519f23 | 3958 | token = next_token (&val, (unsigned *)0, cfile); |
88886e12 TL |
3959 | if (token != COMMA) |
3960 | goto nocomma; | |
3961 | ||
3962 | if (!(parse_data_expression | |
f579f39f | 3963 | (&(*expr) -> data.ns_add.rrname, cfile, lose))) |
88886e12 TL |
3964 | goto nodata; |
3965 | ||
b3519f23 | 3966 | token = next_token (&val, (unsigned *)0, cfile); |
88886e12 TL |
3967 | if (token != COMMA) |
3968 | goto nocomma; | |
3969 | ||
3970 | if (!(parse_data_expression | |
f579f39f | 3971 | (&(*expr) -> data.ns_add.rrdata, cfile, lose))) |
88886e12 TL |
3972 | goto nodata; |
3973 | ||
f579f39f | 3974 | if (opcode == expr_ns_add) { |
b3519f23 | 3975 | token = next_token (&val, (unsigned *)0, cfile); |
9fb2fb28 TL |
3976 | if (token != COMMA) |
3977 | goto nocomma; | |
3978 | ||
3979 | if (!(parse_numeric_expression | |
f579f39f TL |
3980 | (&(*expr) -> data.ns_add.ttl, cfile, |
3981 | lose))) { | |
962dc4ab | 3982 | if (!*lose) |
9fb2fb28 | 3983 | parse_warn (cfile, |
962dc4ab TL |
3984 | "expecting numeric expression."); |
3985 | goto badnsupdate; | |
9fb2fb28 TL |
3986 | } |
3987 | } | |
3988 | ||
b3519f23 | 3989 | token = next_token (&val, (unsigned *)0, cfile); |
88886e12 TL |
3990 | if (token != RPAREN) |
3991 | goto norparen; | |
3992 | break; | |
3993 | ||
79a65726 TL |
3994 | case OPTION: |
3995 | case CONFIG_OPTION: | |
4bd8800e | 3996 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 3997 | log_fatal ("can't allocate expression"); |
cd31814f TL |
3998 | (*expr) -> op = (token == OPTION |
3999 | ? expr_option | |
4000 | : expr_config_option); | |
b3519f23 | 4001 | token = next_token (&val, (unsigned *)0, cfile); |
b1b7b521 | 4002 | known = 0; |
f7fdb216 DH |
4003 | /* Pass reference directly to expression structure. */ |
4004 | status = parse_option_name(cfile, 0, &known, | |
4005 | &(*expr)->data.option); | |
4006 | if (status != ISC_R_SUCCESS || | |
4007 | (*expr)->data.option == NULL) { | |
be6be08d | 4008 | *lose = 1; |
4bd8800e | 4009 | expression_dereference (expr, MDL); |
02a015fb | 4010 | return 0; |
be6be08d | 4011 | } |
02a015fb | 4012 | break; |
be6be08d TL |
4013 | |
4014 | case HARDWARE: | |
b3519f23 | 4015 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4016 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4017 | log_fatal ("can't allocate expression"); |
02a015fb TL |
4018 | (*expr) -> op = expr_hardware; |
4019 | break; | |
be6be08d | 4020 | |
da38df14 | 4021 | case LEASED_ADDRESS: |
b3519f23 | 4022 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4023 | if (!expression_allocate (expr, MDL)) |
da38df14 TL |
4024 | log_fatal ("can't allocate expression"); |
4025 | (*expr) -> op = expr_leased_address; | |
4026 | break; | |
4027 | ||
9a7f6fcd | 4028 | case CLIENT_STATE: |
b3519f23 | 4029 | token = next_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
4030 | if (!expression_allocate (expr, MDL)) |
4031 | log_fatal ("can't allocate expression"); | |
4032 | (*expr) -> op = expr_client_state; | |
4033 | break; | |
4034 | ||
fdac15d9 | 4035 | case FILENAME: |
b3519f23 | 4036 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4037 | if (!expression_allocate (expr, MDL)) |
fdac15d9 TL |
4038 | log_fatal ("can't allocate expression"); |
4039 | (*expr) -> op = expr_filename; | |
4040 | break; | |
4041 | ||
4042 | case SERVER_NAME: | |
b3519f23 | 4043 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4044 | if (!expression_allocate (expr, MDL)) |
fdac15d9 TL |
4045 | log_fatal ("can't allocate expression"); |
4046 | (*expr) -> op = expr_sname; | |
4047 | break; | |
4048 | ||
069e9f4c | 4049 | case LEASE_TIME: |
b3519f23 | 4050 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4051 | if (!expression_allocate (expr, MDL)) |
069e9f4c TL |
4052 | log_fatal ("can't allocate expression"); |
4053 | (*expr) -> op = expr_lease_time; | |
4054 | break; | |
4055 | ||
f579f39f | 4056 | case TOKEN_NULL: |
b3519f23 | 4057 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4058 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4059 | log_fatal ("can't allocate expression"); |
4060 | (*expr) -> op = expr_null; | |
4061 | break; | |
4062 | ||
79a65726 | 4063 | case HOST_DECL_NAME: |
b3519f23 | 4064 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4065 | if (!expression_allocate (expr, MDL)) |
79a65726 TL |
4066 | log_fatal ("can't allocate expression"); |
4067 | (*expr) -> op = expr_host_decl_name; | |
4068 | break; | |
4069 | ||
846d7d54 | 4070 | case UPDATED_DNS_RR: |
b3519f23 | 4071 | token = next_token (&val, (unsigned *)0, cfile); |
06a8567c | 4072 | |
b3519f23 | 4073 | token = next_token (&val, (unsigned *)0, cfile); |
846d7d54 TL |
4074 | if (token != LPAREN) |
4075 | goto nolparen; | |
f579f39f | 4076 | |
b3519f23 | 4077 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4078 | if (token != STRING) { |
4079 | parse_warn (cfile, "expecting string."); | |
4080 | bad_rrtype: | |
4081 | *lose = 1; | |
4082 | return 0; | |
4083 | } | |
4084 | if (!strcasecmp (val, "a")) | |
4085 | s = "ddns-fwd-name"; | |
4086 | else if (!strcasecmp (val, "ptr")) | |
4087 | s = "ddns-rev-name"; | |
4088 | else { | |
4089 | parse_warn (cfile, "invalid DNS rrtype: %s", val); | |
4090 | goto bad_rrtype; | |
4091 | } | |
846d7d54 | 4092 | |
b3519f23 | 4093 | token = next_token (&val, (unsigned *)0, cfile); |
846d7d54 TL |
4094 | if (token != RPAREN) |
4095 | goto norparen; | |
4096 | ||
4bd8800e | 4097 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4098 | log_fatal ("can't allocate expression"); |
4099 | (*expr) -> op = expr_variable_reference; | |
4100 | (*expr) -> data.variable = | |
fdac15d9 | 4101 | dmalloc (strlen (s) + 1, MDL); |
f579f39f TL |
4102 | if (!(*expr) -> data.variable) |
4103 | log_fatal ("can't allocate variable name."); | |
4104 | strcpy ((*expr) -> data.variable, s); | |
06a8567c TL |
4105 | break; |
4106 | ||
be6be08d | 4107 | case PACKET: |
b3519f23 | 4108 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4109 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4110 | log_fatal ("can't allocate expression"); |
02a015fb | 4111 | (*expr) -> op = expr_packet; |
be6be08d | 4112 | |
b3519f23 | 4113 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4114 | if (token != LPAREN) |
4115 | goto nolparen; | |
4116 | ||
02a015fb TL |
4117 | if (!parse_numeric_expression (&(*expr) -> data.packet.offset, |
4118 | cfile, lose)) | |
be6be08d TL |
4119 | goto nonum; |
4120 | ||
b3519f23 | 4121 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4122 | if (token != COMMA) |
4123 | goto nocomma; | |
4124 | ||
02a015fb TL |
4125 | if (!parse_numeric_expression (&(*expr) -> data.packet.len, |
4126 | cfile, lose)) | |
be6be08d TL |
4127 | goto nonum; |
4128 | ||
b3519f23 | 4129 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4130 | if (token != RPAREN) |
4131 | goto norparen; | |
02a015fb | 4132 | break; |
be6be08d TL |
4133 | |
4134 | case STRING: | |
b3519f23 | 4135 | token = next_token (&val, &len, cfile); |
b1b7b521 | 4136 | if (!make_const_data (expr, (const unsigned char *)val, |
d758ad8c | 4137 | len, 1, 1, MDL)) |
8ae2d595 | 4138 | log_fatal ("can't make constant string expression."); |
02a015fb | 4139 | break; |
be6be08d | 4140 | |
be6be08d | 4141 | case EXTRACT_INT: |
b3519f23 TL |
4142 | token = next_token (&val, (unsigned *)0, cfile); |
4143 | token = next_token (&val, (unsigned *)0, cfile); | |
be6be08d | 4144 | if (token != LPAREN) { |
4615d498 | 4145 | parse_warn (cfile, "left parenthesis expected."); |
be6be08d | 4146 | *lose = 1; |
02a015fb | 4147 | return 0; |
be6be08d TL |
4148 | } |
4149 | ||
4bd8800e | 4150 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4151 | log_fatal ("can't allocate expression"); |
02a015fb TL |
4152 | |
4153 | if (!parse_data_expression (&(*expr) -> data.extract_int, | |
4154 | cfile, lose)) { | |
962dc4ab TL |
4155 | if (!*lose) { |
4156 | parse_warn (cfile, | |
4157 | "expecting data expression."); | |
4158 | skip_to_semi (cfile); | |
4159 | *lose = 1; | |
4160 | } | |
4bd8800e | 4161 | expression_dereference (expr, MDL); |
02a015fb | 4162 | return 0; |
be6be08d TL |
4163 | } |
4164 | ||
b3519f23 | 4165 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4166 | if (token != COMMA) { |
4615d498 | 4167 | parse_warn (cfile, "comma expected."); |
be6be08d | 4168 | *lose = 1; |
4bd8800e | 4169 | expression_dereference (expr, MDL); |
02a015fb | 4170 | return 0; |
be6be08d TL |
4171 | } |
4172 | ||
b3519f23 | 4173 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4174 | if (token != NUMBER) { |
4615d498 | 4175 | parse_warn (cfile, "number expected."); |
be6be08d | 4176 | *lose = 1; |
4bd8800e | 4177 | expression_dereference (expr, MDL); |
02a015fb | 4178 | return 0; |
be6be08d | 4179 | } |
be6be08d TL |
4180 | switch (atoi (val)) { |
4181 | case 8: | |
02a015fb | 4182 | (*expr) -> op = expr_extract_int8; |
be6be08d TL |
4183 | break; |
4184 | ||
4185 | case 16: | |
02a015fb | 4186 | (*expr) -> op = expr_extract_int16; |
be6be08d TL |
4187 | break; |
4188 | ||
4189 | case 32: | |
02a015fb | 4190 | (*expr) -> op = expr_extract_int32; |
be6be08d TL |
4191 | break; |
4192 | ||
4193 | default: | |
4615d498 TL |
4194 | parse_warn (cfile, |
4195 | "unsupported integer size %d", atoi (val)); | |
be6be08d TL |
4196 | *lose = 1; |
4197 | skip_to_semi (cfile); | |
4bd8800e | 4198 | expression_dereference (expr, MDL); |
02a015fb | 4199 | return 0; |
be6be08d TL |
4200 | } |
4201 | ||
b3519f23 | 4202 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 4203 | if (token != RPAREN) { |
4615d498 | 4204 | parse_warn (cfile, "right parenthesis expected."); |
be6be08d | 4205 | *lose = 1; |
4bd8800e | 4206 | expression_dereference (expr, MDL); |
02a015fb | 4207 | return 0; |
be6be08d | 4208 | } |
02a015fb | 4209 | break; |
be6be08d | 4210 | |
20c4e94d | 4211 | case ENCODE_INT: |
b3519f23 TL |
4212 | token = next_token (&val, (unsigned *)0, cfile); |
4213 | token = next_token (&val, (unsigned *)0, cfile); | |
20c4e94d | 4214 | if (token != LPAREN) { |
4615d498 | 4215 | parse_warn (cfile, "left parenthesis expected."); |
20c4e94d TL |
4216 | *lose = 1; |
4217 | return 0; | |
4218 | } | |
4219 | ||
4bd8800e | 4220 | if (!expression_allocate (expr, MDL)) |
20c4e94d TL |
4221 | log_fatal ("can't allocate expression"); |
4222 | ||
4223 | if (!parse_numeric_expression (&(*expr) -> data.encode_int, | |
4224 | cfile, lose)) { | |
4615d498 | 4225 | parse_warn (cfile, "expecting numeric expression."); |
20c4e94d TL |
4226 | skip_to_semi (cfile); |
4227 | *lose = 1; | |
4bd8800e | 4228 | expression_dereference (expr, MDL); |
20c4e94d TL |
4229 | return 0; |
4230 | } | |
4231 | ||
b3519f23 | 4232 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4233 | if (token != COMMA) { |
4615d498 | 4234 | parse_warn (cfile, "comma expected."); |
20c4e94d | 4235 | *lose = 1; |
4bd8800e | 4236 | expression_dereference (expr, MDL); |
20c4e94d TL |
4237 | return 0; |
4238 | } | |
4239 | ||
b3519f23 | 4240 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4241 | if (token != NUMBER) { |
4615d498 | 4242 | parse_warn (cfile, "number expected."); |
20c4e94d | 4243 | *lose = 1; |
4bd8800e | 4244 | expression_dereference (expr, MDL); |
20c4e94d TL |
4245 | return 0; |
4246 | } | |
4247 | switch (atoi (val)) { | |
4248 | case 8: | |
4249 | (*expr) -> op = expr_encode_int8; | |
4250 | break; | |
4251 | ||
4252 | case 16: | |
4253 | (*expr) -> op = expr_encode_int16; | |
4254 | break; | |
4255 | ||
4256 | case 32: | |
4257 | (*expr) -> op = expr_encode_int32; | |
4258 | break; | |
4259 | ||
4260 | default: | |
4615d498 TL |
4261 | parse_warn (cfile, |
4262 | "unsupported integer size %d", atoi (val)); | |
20c4e94d TL |
4263 | *lose = 1; |
4264 | skip_to_semi (cfile); | |
4bd8800e | 4265 | expression_dereference (expr, MDL); |
20c4e94d TL |
4266 | return 0; |
4267 | } | |
4268 | ||
b3519f23 | 4269 | token = next_token (&val, (unsigned *)0, cfile); |
20c4e94d | 4270 | if (token != RPAREN) { |
4615d498 | 4271 | parse_warn (cfile, "right parenthesis expected."); |
20c4e94d | 4272 | *lose = 1; |
4bd8800e | 4273 | expression_dereference (expr, MDL); |
20c4e94d TL |
4274 | return 0; |
4275 | } | |
4276 | break; | |
4277 | ||
be6be08d | 4278 | case NUMBER: |
02a015fb TL |
4279 | /* If we're in a numeric context, this should just be a |
4280 | number, by itself. */ | |
f579f39f TL |
4281 | if (context == context_numeric || |
4282 | context == context_data_or_numeric) { | |
b3519f23 | 4283 | next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4284 | if (!expression_allocate (expr, MDL)) |
be19167d | 4285 | log_fatal ("can't allocate expression"); |
02a015fb TL |
4286 | (*expr) -> op = expr_const_int; |
4287 | (*expr) -> data.const_int = atoi (val); | |
4288 | break; | |
4289 | } | |
be6be08d | 4290 | |
02a015fb | 4291 | case NUMBER_OR_NAME: |
4bd8800e | 4292 | if (!expression_allocate (expr, MDL)) |
be19167d TL |
4293 | log_fatal ("can't allocate expression"); |
4294 | ||
02a015fb TL |
4295 | (*expr) -> op = expr_const_data; |
4296 | if (!parse_cshl (&(*expr) -> data.const_data, cfile)) { | |
4bd8800e | 4297 | expression_dereference (expr, MDL); |
02a015fb TL |
4298 | return 0; |
4299 | } | |
4300 | break; | |
4301 | ||
f579f39f TL |
4302 | case NS_FORMERR: |
4303 | known = FORMERR; | |
9a7f6fcd | 4304 | goto ns_const; |
f579f39f | 4305 | ns_const: |
b3519f23 | 4306 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4307 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4308 | log_fatal ("can't allocate expression"); |
4309 | (*expr) -> op = expr_const_int; | |
4310 | (*expr) -> data.const_int = known; | |
4311 | break; | |
4312 | ||
4313 | case NS_NOERROR: | |
1898dcf7 | 4314 | known = ISC_R_SUCCESS; |
f579f39f TL |
4315 | goto ns_const; |
4316 | ||
4317 | case NS_NOTAUTH: | |
1898dcf7 | 4318 | known = ISC_R_NOTAUTH; |
f579f39f TL |
4319 | goto ns_const; |
4320 | ||
4321 | case NS_NOTIMP: | |
1898dcf7 | 4322 | known = ISC_R_NOTIMPLEMENTED; |
f579f39f TL |
4323 | goto ns_const; |
4324 | ||
4325 | case NS_NOTZONE: | |
1898dcf7 | 4326 | known = ISC_R_NOTZONE; |
f579f39f TL |
4327 | goto ns_const; |
4328 | ||
4329 | case NS_NXDOMAIN: | |
1898dcf7 | 4330 | known = ISC_R_NXDOMAIN; |
f579f39f TL |
4331 | goto ns_const; |
4332 | ||
4333 | case NS_NXRRSET: | |
1898dcf7 | 4334 | known = ISC_R_NXRRSET; |
f579f39f TL |
4335 | goto ns_const; |
4336 | ||
4337 | case NS_REFUSED: | |
1898dcf7 | 4338 | known = ISC_R_REFUSED; |
f579f39f TL |
4339 | goto ns_const; |
4340 | ||
4341 | case NS_SERVFAIL: | |
1898dcf7 | 4342 | known = ISC_R_SERVFAIL; |
f579f39f TL |
4343 | goto ns_const; |
4344 | ||
4345 | case NS_YXDOMAIN: | |
1898dcf7 | 4346 | known = ISC_R_YXDOMAIN; |
f579f39f TL |
4347 | goto ns_const; |
4348 | ||
4349 | case NS_YXRRSET: | |
1898dcf7 | 4350 | known = ISC_R_YXRRSET; |
f579f39f TL |
4351 | goto ns_const; |
4352 | ||
8a34e9e6 TL |
4353 | case BOOTING: |
4354 | known = S_INIT; | |
4355 | goto ns_const; | |
4356 | ||
4357 | case REBOOT: | |
4358 | known = S_REBOOTING; | |
4359 | goto ns_const; | |
4360 | ||
4361 | case SELECT: | |
4362 | known = S_SELECTING; | |
4363 | goto ns_const; | |
4364 | ||
543ce4f8 TL |
4365 | case REQUEST: |
4366 | known = S_REQUESTING; | |
4367 | goto ns_const; | |
4368 | ||
8a34e9e6 TL |
4369 | case BOUND: |
4370 | known = S_BOUND; | |
4371 | goto ns_const; | |
4372 | ||
4373 | case RENEW: | |
4374 | known = S_RENEWING; | |
4375 | goto ns_const; | |
4376 | ||
4377 | case REBIND: | |
4378 | known = S_REBINDING; | |
4379 | goto ns_const; | |
4380 | ||
f579f39f | 4381 | case DEFINED: |
b3519f23 TL |
4382 | token = next_token (&val, (unsigned *)0, cfile); |
4383 | token = next_token (&val, (unsigned *)0, cfile); | |
f579f39f TL |
4384 | if (token != LPAREN) |
4385 | goto nolparen; | |
4386 | ||
b3519f23 | 4387 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4388 | if (token != NAME && token != NUMBER_OR_NAME) { |
4389 | parse_warn (cfile, "%s can't be a variable name", val); | |
4390 | skip_to_semi (cfile); | |
4391 | *lose = 1; | |
4392 | return 0; | |
4393 | } | |
4394 | ||
4bd8800e | 4395 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
4396 | log_fatal ("can't allocate expression"); |
4397 | (*expr) -> op = expr_variable_exists; | |
fdac15d9 | 4398 | (*expr) -> data.variable = dmalloc (strlen (val) + 1, MDL); |
f579f39f TL |
4399 | if (!(*expr)->data.variable) |
4400 | log_fatal ("can't allocate variable name"); | |
4401 | strcpy ((*expr) -> data.variable, val); | |
b3519f23 | 4402 | token = next_token (&val, (unsigned *)0, cfile); |
f579f39f TL |
4403 | if (token != RPAREN) |
4404 | goto norparen; | |
4405 | break; | |
4406 | ||
02a015fb | 4407 | /* Not a valid start to an expression... */ |
be6be08d | 4408 | default: |
f579f39f TL |
4409 | if (token != NAME && token != NUMBER_OR_NAME) |
4410 | return 0; | |
4411 | ||
b3519f23 | 4412 | token = next_token (&val, (unsigned *)0, cfile); |
08514fb8 TL |
4413 | |
4414 | /* Save the name of the variable being referenced. */ | |
4415 | cptr = dmalloc (strlen (val) + 1, MDL); | |
4416 | if (!cptr) | |
4417 | log_fatal ("can't allocate variable name"); | |
4418 | strcpy (cptr, val); | |
4419 | ||
4420 | /* Simple variable reference, as far as we can tell. */ | |
b3519f23 | 4421 | token = peek_token (&val, (unsigned *)0, cfile); |
08514fb8 TL |
4422 | if (token != LPAREN) { |
4423 | if (!expression_allocate (expr, MDL)) | |
4424 | log_fatal ("can't allocate expression"); | |
4425 | (*expr) -> op = expr_variable_reference; | |
4426 | (*expr) -> data.variable = cptr; | |
4427 | break; | |
4428 | } | |
4429 | ||
b3519f23 | 4430 | token = next_token (&val, (unsigned *)0, cfile); |
4bd8800e | 4431 | if (!expression_allocate (expr, MDL)) |
f579f39f | 4432 | log_fatal ("can't allocate expression"); |
08514fb8 TL |
4433 | (*expr) -> op = expr_funcall; |
4434 | (*expr) -> data.funcall.name = cptr; | |
4435 | ||
4436 | /* Now parse the argument list. */ | |
4437 | ep = &(*expr) -> data.funcall.arglist; | |
4438 | do { | |
4439 | if (!expression_allocate (ep, MDL)) | |
4440 | log_fatal ("can't allocate expression"); | |
4441 | (*ep) -> op = expr_arg; | |
4442 | if (!parse_expression (&(*ep) -> data.arg.val, | |
4443 | cfile, lose, context_any, | |
4444 | (struct expression **)0, | |
4445 | expr_none)) { | |
4446 | if (!*lose) { | |
4447 | parse_warn (cfile, | |
4448 | "expecting expression."); | |
4449 | *lose = 1; | |
4450 | } | |
4451 | skip_to_semi (cfile); | |
4452 | expression_dereference (expr, MDL); | |
4453 | return 0; | |
4454 | } | |
4455 | ep = &((*ep) -> data.arg.next); | |
b3519f23 | 4456 | token = next_token (&val, (unsigned *)0, cfile); |
08514fb8 TL |
4457 | } while (token == COMMA); |
4458 | if (token != RPAREN) { | |
4459 | parse_warn (cfile, "Right parenthesis expected."); | |
4460 | skip_to_semi (cfile); | |
4461 | *lose = 1; | |
4462 | expression_dereference (expr, MDL); | |
4463 | return 0; | |
4464 | } | |
f579f39f | 4465 | break; |
be6be08d | 4466 | } |
02a015fb | 4467 | return 1; |
be6be08d TL |
4468 | } |
4469 | ||
02a015fb TL |
4470 | /* Parse an expression. */ |
4471 | ||
4472 | int parse_expression (expr, cfile, lose, context, plhs, binop) | |
4473 | struct expression **expr; | |
4615d498 | 4474 | struct parse *cfile; |
02a015fb TL |
4475 | int *lose; |
4476 | enum expression_context context; | |
4477 | struct expression **plhs; | |
4478 | enum expr_op binop; | |
4479 | { | |
4480 | enum dhcp_token token; | |
b1b7b521 | 4481 | const char *val; |
02a015fb | 4482 | struct expression *rhs = (struct expression *)0, *tmp; |
962dc4ab | 4483 | struct expression *lhs = (struct expression *)0; |
02a015fb | 4484 | enum expr_op next_op; |
1898dcf7 TL |
4485 | enum expression_context |
4486 | lhs_context = context_any, | |
4487 | rhs_context = context_any; | |
02a015fb TL |
4488 | |
4489 | /* Consume the left hand side we were passed. */ | |
4490 | if (plhs) { | |
962dc4ab TL |
4491 | expression_reference (&lhs, *plhs, MDL); |
4492 | expression_dereference (plhs, MDL); | |
4493 | } | |
02a015fb TL |
4494 | |
4495 | new_rhs: | |
4496 | if (!parse_non_binary (&rhs, cfile, lose, context)) { | |
4497 | /* If we already have a left-hand side, then it's not | |
4498 | okay for there not to be a right-hand side here, so | |
4499 | we need to flag it as an error. */ | |
4500 | if (lhs) { | |
4501 | if (!*lose) { | |
4615d498 TL |
4502 | parse_warn (cfile, |
4503 | "expecting right-hand side."); | |
02a015fb TL |
4504 | *lose = 1; |
4505 | skip_to_semi (cfile); | |
4506 | } | |
4bd8800e | 4507 | expression_dereference (&lhs, MDL); |
02a015fb TL |
4508 | } |
4509 | return 0; | |
4510 | } | |
4511 | ||
4512 | /* At this point, rhs contains either an entire subexpression, | |
4513 | or at least a left-hand-side. If we do not see a binary token | |
4514 | as the next token, we're done with the expression. */ | |
4515 | ||
b3519f23 | 4516 | token = peek_token (&val, (unsigned *)0, cfile); |
02a015fb | 4517 | switch (token) { |
2b965a44 | 4518 | case BANG: |
b3519f23 TL |
4519 | token = next_token (&val, (unsigned *)0, cfile); |
4520 | token = peek_token (&val, (unsigned *)0, cfile); | |
2b965a44 TL |
4521 | if (token != EQUAL) { |
4522 | parse_warn (cfile, "! in boolean context without ="); | |
4523 | *lose = 1; | |
4524 | skip_to_semi (cfile); | |
4525 | if (lhs) | |
4bd8800e | 4526 | expression_dereference (&lhs, MDL); |
2b965a44 TL |
4527 | return 0; |
4528 | } | |
4529 | next_op = expr_not_equal; | |
1898dcf7 | 4530 | context = expression_context (rhs); |
2b965a44 TL |
4531 | break; |
4532 | ||
02a015fb TL |
4533 | case EQUAL: |
4534 | next_op = expr_equal; | |
1898dcf7 | 4535 | context = expression_context (rhs); |
02a015fb TL |
4536 | break; |
4537 | ||
4538 | case AND: | |
4539 | next_op = expr_and; | |
1898dcf7 | 4540 | context = expression_context (rhs); |
02a015fb TL |
4541 | break; |
4542 | ||
4543 | case OR: | |
4544 | next_op = expr_or; | |
1898dcf7 | 4545 | context = expression_context (rhs); |
02a015fb TL |
4546 | break; |
4547 | ||
31cb2a5f TL |
4548 | case PLUS: |
4549 | next_op = expr_add; | |
1898dcf7 | 4550 | context = expression_context (rhs); |
31cb2a5f TL |
4551 | break; |
4552 | ||
4553 | case MINUS: | |
4554 | next_op = expr_subtract; | |
1898dcf7 | 4555 | context = expression_context (rhs); |
31cb2a5f TL |
4556 | break; |
4557 | ||
4558 | case SLASH: | |
4559 | next_op = expr_divide; | |
1898dcf7 | 4560 | context = expression_context (rhs); |
31cb2a5f TL |
4561 | break; |
4562 | ||
4563 | case ASTERISK: | |
4564 | next_op = expr_multiply; | |
1898dcf7 | 4565 | context = expression_context (rhs); |
31cb2a5f TL |
4566 | break; |
4567 | ||
4568 | case PERCENT: | |
4569 | next_op = expr_remainder; | |
1898dcf7 | 4570 | context = expression_context (rhs); |
31cb2a5f TL |
4571 | break; |
4572 | ||
3c98e80b DN |
4573 | case AMPERSAND: |
4574 | next_op = expr_binary_and; | |
1898dcf7 | 4575 | context = expression_context (rhs); |
3c98e80b DN |
4576 | break; |
4577 | ||
4578 | case PIPE: | |
4579 | next_op = expr_binary_or; | |
1898dcf7 | 4580 | context = expression_context (rhs); |
3c98e80b DN |
4581 | break; |
4582 | ||
4583 | case CARET: | |
4584 | next_op = expr_binary_xor; | |
1898dcf7 | 4585 | context = expression_context (rhs); |
3c98e80b DN |
4586 | break; |
4587 | ||
02a015fb TL |
4588 | default: |
4589 | next_op = expr_none; | |
4590 | } | |
4591 | ||
4592 | /* If we have no lhs yet, we just parsed it. */ | |
4593 | if (!lhs) { | |
4594 | /* If there was no operator following what we just parsed, | |
4595 | then we're done - return it. */ | |
4596 | if (next_op == expr_none) { | |
4597 | *expr = rhs; | |
4598 | return 1; | |
4599 | } | |
4600 | lhs = rhs; | |
4601 | rhs = (struct expression *)0; | |
4602 | binop = next_op; | |
b3519f23 | 4603 | next_token (&val, (unsigned *)0, cfile); |
02a015fb TL |
4604 | goto new_rhs; |
4605 | } | |
4606 | ||
98311e4b DH |
4607 | /* If the next binary operator is of greater precedence than the |
4608 | * current operator, then rhs we have parsed so far is actually | |
4609 | * the lhs of the next operator. To get this value, we have to | |
4610 | * recurse. | |
4611 | */ | |
4612 | if (binop != expr_none && next_op != expr_none && | |
4613 | op_precedence (binop, next_op) < 0) { | |
4614 | ||
4615 | /* Eat the subexpression operator token, which we pass to | |
4616 | * parse_expression...we only peek()'d earlier. | |
4617 | */ | |
4618 | token = next_token (&val, (unsigned *)0, cfile); | |
4619 | ||
4620 | /* Continue parsing of the right hand side with that token. */ | |
4621 | tmp = rhs; | |
4622 | rhs = (struct expression *)0; | |
4623 | if (!parse_expression (&rhs, cfile, lose, op_context (next_op), | |
4624 | &tmp, next_op)) { | |
4625 | if (!*lose) { | |
4626 | parse_warn (cfile, | |
4627 | "expecting a subexpression"); | |
4628 | *lose = 1; | |
4629 | } | |
4630 | return 0; | |
4631 | } | |
4632 | next_op = expr_none; | |
4633 | } | |
4634 | ||
4635 | if (binop != expr_none) { | |
4636 | rhs_context = expression_context(rhs); | |
4637 | lhs_context = expression_context(lhs); | |
4638 | ||
4639 | if ((rhs_context != context_any) && (lhs_context != context_any) && | |
4640 | (rhs_context != lhs_context)) { | |
4641 | parse_warn (cfile, "illegal expression relating different types"); | |
4642 | skip_to_semi (cfile); | |
4643 | expression_dereference (&rhs, MDL); | |
4644 | expression_dereference (&lhs, MDL); | |
4645 | *lose = 1; | |
4646 | return 0; | |
4647 | } | |
4648 | ||
4649 | switch(binop) { | |
4650 | case expr_not_equal: | |
4651 | case expr_equal: | |
4652 | if ((rhs_context != context_data_or_numeric) && | |
4653 | (rhs_context != context_data) && | |
4654 | (rhs_context != context_numeric) && | |
4655 | (rhs_context != context_any)) { | |
4656 | parse_warn (cfile, "expecting data/numeric expression"); | |
4657 | skip_to_semi (cfile); | |
4658 | expression_dereference (&rhs, MDL); | |
4659 | *lose = 1; | |
4660 | return 0; | |
4661 | } | |
4662 | break; | |
4663 | ||
4664 | case expr_and: | |
4665 | case expr_or: | |
4666 | if ((rhs_context != context_boolean) && | |
4667 | (rhs_context != context_any)) { | |
4668 | parse_warn (cfile, "expecting boolean expressions"); | |
4669 | skip_to_semi (cfile); | |
4670 | expression_dereference (&rhs, MDL); | |
4671 | *lose = 1; | |
4672 | return 0; | |
4673 | } | |
4674 | break; | |
4675 | ||
4676 | case expr_add: | |
4677 | case expr_subtract: | |
4678 | case expr_divide: | |
4679 | case expr_multiply: | |
4680 | case expr_remainder: | |
4681 | case expr_binary_and: | |
4682 | case expr_binary_or: | |
4683 | case expr_binary_xor: | |
4684 | if ((rhs_context != context_numeric) && | |
4685 | (rhs_context != context_any)) { | |
4686 | parse_warn (cfile, "expecting numeric expressions"); | |
4687 | skip_to_semi (cfile); | |
4688 | expression_dereference (&rhs, MDL); | |
4689 | *lose = 1; | |
4690 | return 0; | |
4691 | } | |
4692 | break; | |
4693 | ||
4694 | default: | |
4695 | break; | |
4696 | } | |
4697 | } | |
4698 | ||
02a015fb TL |
4699 | /* Now, if we didn't find a binary operator, we're done parsing |
4700 | this subexpression, so combine it with the preceding binary | |
4701 | operator and return the result. */ | |
4702 | if (next_op == expr_none) { | |
4bd8800e | 4703 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 4704 | log_fatal ("Can't allocate expression!"); |
02a015fb TL |
4705 | |
4706 | (*expr) -> op = binop; | |
4707 | /* All the binary operators' data union members | |
4708 | are the same, so we'll cheat and use the member | |
4709 | for the equals operator. */ | |
4710 | (*expr) -> data.equal [0] = lhs; | |
4711 | (*expr) -> data.equal [1] = rhs; | |
4712 | return 1; | |
4713 | } | |
4714 | ||
4715 | /* Eat the operator token - we now know it was a binary operator... */ | |
b3519f23 | 4716 | token = next_token (&val, (unsigned *)0, cfile); |
02a015fb | 4717 | |
02a015fb TL |
4718 | /* Now combine the LHS and the RHS using binop. */ |
4719 | tmp = (struct expression *)0; | |
4bd8800e | 4720 | if (!expression_allocate (&tmp, MDL)) |
8ae2d595 | 4721 | log_fatal ("No memory for equal precedence combination."); |
02a015fb TL |
4722 | |
4723 | /* Store the LHS and RHS. */ | |
4724 | tmp -> data.equal [0] = lhs; | |
4725 | tmp -> data.equal [1] = rhs; | |
4726 | tmp -> op = binop; | |
4727 | ||
4728 | lhs = tmp; | |
4729 | tmp = (struct expression *)0; | |
4730 | rhs = (struct expression *)0; | |
4731 | ||
4732 | /* Recursions don't return until we have parsed the end of the | |
4733 | expression, so if we recursed earlier, we can now return what | |
4734 | we got. */ | |
4735 | if (next_op == expr_none) { | |
4736 | *expr = lhs; | |
4737 | return 1; | |
4738 | } | |
4739 | ||
4740 | binop = next_op; | |
4741 | goto new_rhs; | |
4742 | } | |
4743 | ||
be6be08d TL |
4744 | /* option-statement :== identifier DOT identifier <syntax> SEMI |
4745 | | identifier <syntax> SEMI | |
4746 | ||
4747 | Option syntax is handled specially through format strings, so it | |
4748 | would be painful to come up with BNF for it. However, it always | |
4749 | starts as above and ends in a SEMI. */ | |
4750 | ||
79a65726 TL |
4751 | int parse_option_statement (result, cfile, lookups, option, op) |
4752 | struct executable_statement **result; | |
4615d498 | 4753 | struct parse *cfile; |
be6be08d TL |
4754 | int lookups; |
4755 | struct option *option; | |
4756 | enum statement_op op; | |
4757 | { | |
b1b7b521 | 4758 | const char *val; |
02a015fb | 4759 | enum dhcp_token token; |
d8fc5060 | 4760 | const char *fmt = NULL; |
be6be08d | 4761 | struct expression *expr = (struct expression *)0; |
02a015fb | 4762 | struct expression *tmp; |
be6be08d TL |
4763 | int lose; |
4764 | struct executable_statement *stmt; | |
02a015fb | 4765 | int ftt = 1; |
be6be08d | 4766 | |
b3519f23 | 4767 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4768 | if (token == SEMI) { |
4769 | /* Eat the semicolon... */ | |
b3519f23 | 4770 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d TL |
4771 | goto done; |
4772 | } | |
4773 | ||
a82abfc7 TL |
4774 | if (token == EQUAL) { |
4775 | /* Eat the equals sign. */ | |
b3519f23 | 4776 | token = next_token (&val, (unsigned *)0, cfile); |
a82abfc7 TL |
4777 | |
4778 | /* Parse a data expression and use its value for the data. */ | |
4779 | if (!parse_data_expression (&expr, cfile, &lose)) { | |
4780 | /* In this context, we must have an executable | |
4781 | statement, so if we found something else, it's | |
4782 | still an error. */ | |
4783 | if (!lose) { | |
4615d498 TL |
4784 | parse_warn (cfile, |
4785 | "expecting a data expression."); | |
a82abfc7 TL |
4786 | skip_to_semi (cfile); |
4787 | } | |
79a65726 | 4788 | return 0; |
a82abfc7 TL |
4789 | } |
4790 | ||
4791 | /* We got a valid expression, so use it. */ | |
4792 | goto done; | |
4793 | } | |
4794 | ||
be6be08d TL |
4795 | /* Parse the option data... */ |
4796 | do { | |
4797 | /* Set a flag if this is an array of a simple type (i.e., | |
4798 | not an array of pairs of IP addresses, or something | |
4799 | like that. */ | |
4800 | int uniform = option -> format [1] == 'A'; | |
4801 | ||
d8fc5060 TL |
4802 | and_again: |
4803 | /* Set fmt to start of format for 'A' and one char back | |
d5341d9b SK |
4804 | * for 'a'. |
4805 | */ | |
4806 | if ((fmt != NULL) && (fmt != option->format) && (*fmt == 'a')) | |
d8fc5060 | 4807 | fmt -= 1; |
d5341d9b SK |
4808 | else if ((fmt == NULL) || (*fmt == 'A')) |
4809 | fmt = option->format; | |
d8fc5060 TL |
4810 | |
4811 | /* 'a' means always uniform */ | |
4812 | uniform |= (fmt [1] == 'a'); | |
4813 | ||
4814 | for ( ; *fmt; fmt++) { | |
4815 | if ((*fmt == 'A') || (*fmt == 'a')) | |
be6be08d | 4816 | break; |
d8fc5060 TL |
4817 | if (*fmt == 'o') |
4818 | continue; | |
02a015fb | 4819 | tmp = expr; |
44aa67f6 | 4820 | expr = (struct expression *)0; |
63a0ff88 | 4821 | if (!parse_option_token (&expr, cfile, &fmt, |
02a015fb | 4822 | tmp, uniform, lookups)) { |
d8fc5060 TL |
4823 | if (fmt [1] != 'o') { |
4824 | if (tmp) | |
4825 | expression_dereference (&tmp, | |
4826 | MDL); | |
4827 | return 0; | |
4828 | } | |
4829 | expr = tmp; | |
4830 | tmp = (struct expression *)0; | |
02a015fb TL |
4831 | } |
4832 | if (tmp) | |
4bd8800e | 4833 | expression_dereference (&tmp, MDL); |
be6be08d | 4834 | } |
d8fc5060 | 4835 | if ((*fmt == 'A') || (*fmt == 'a')) { |
b3519f23 | 4836 | token = peek_token (&val, (unsigned *)0, cfile); |
d8fc5060 | 4837 | /* Comma means: continue with next element in array */ |
be6be08d | 4838 | if (token == COMMA) { |
b3519f23 TL |
4839 | token = next_token (&val, |
4840 | (unsigned *)0, cfile); | |
be6be08d TL |
4841 | continue; |
4842 | } | |
d8fc5060 TL |
4843 | /* no comma: end of array. |
4844 | 'A' or end of string means: leave the loop */ | |
4845 | if ((*fmt == 'A') || (fmt[1] == '\0')) | |
4846 | break; | |
4847 | /* 'a' means: go on with next char */ | |
4848 | if (*fmt == 'a') { | |
4849 | fmt++; | |
4850 | goto and_again; | |
4851 | } | |
be6be08d | 4852 | } |
d8fc5060 | 4853 | } while ((*fmt == 'A') || (*fmt == 'a')); |
be6be08d TL |
4854 | |
4855 | done: | |
25541f2f | 4856 | if (!parse_semi (cfile)) |
79a65726 | 4857 | return 0; |
4bd8800e | 4858 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
4859 | log_fatal ("no memory for option statement."); |
4860 | (*result) -> op = op; | |
4861 | if (expr && !option_cache (&(*result) -> data.option, | |
d758ad8c | 4862 | (struct data_string *)0, expr, option, MDL)) |
52c9d530 | 4863 | log_fatal ("no memory for option cache"); |
d758ad8c TL |
4864 | if (expr) |
4865 | expression_dereference (&expr, MDL); | |
79a65726 | 4866 | return 1; |
be6be08d TL |
4867 | } |
4868 | ||
02a015fb TL |
4869 | int parse_option_token (rv, cfile, fmt, expr, uniform, lookups) |
4870 | struct expression **rv; | |
4615d498 | 4871 | struct parse *cfile; |
63a0ff88 | 4872 | const char **fmt; |
be6be08d TL |
4873 | struct expression *expr; |
4874 | int uniform; | |
4875 | int lookups; | |
4876 | { | |
b1b7b521 | 4877 | const char *val; |
02a015fb TL |
4878 | enum dhcp_token token; |
4879 | struct expression *t = (struct expression *)0; | |
be6be08d | 4880 | unsigned char buf [4]; |
b3519f23 | 4881 | unsigned len; |
be6be08d TL |
4882 | unsigned char *ob; |
4883 | struct iaddr addr; | |
98bd7ca0 | 4884 | int num, compress; |
b49c02cc | 4885 | const char *f, *g; |
42c6a803 | 4886 | struct enumeration_value *e; |
be6be08d | 4887 | |
63a0ff88 | 4888 | switch (**fmt) { |
52c9d530 | 4889 | case 'U': |
98311e4b | 4890 | token = next_token (&val, &len, cfile); |
52c9d530 | 4891 | if (!is_identifier (token)) { |
63a0ff88 | 4892 | if ((*fmt) [1] != 'o') { |
d8fc5060 | 4893 | parse_warn (cfile, "expecting identifier."); |
98311e4b DH |
4894 | if (token != SEMI) |
4895 | skip_to_semi (cfile); | |
d8fc5060 | 4896 | } |
52c9d530 TL |
4897 | return 0; |
4898 | } | |
b1b7b521 | 4899 | if (!make_const_data (&t, (const unsigned char *)val, |
d758ad8c | 4900 | len, 1, 1, MDL)) |
52c9d530 TL |
4901 | log_fatal ("No memory for %s", val); |
4902 | break; | |
4903 | ||
962dc4ab | 4904 | case 'E': |
b49c02cc TL |
4905 | g = strchr (*fmt, '.'); |
4906 | if (!g) { | |
962dc4ab TL |
4907 | parse_warn (cfile, |
4908 | "malformed encapsulation format (bug!)"); | |
4909 | skip_to_semi (cfile); | |
4910 | return 0; | |
4911 | } | |
b49c02cc | 4912 | *fmt = g; |
be6be08d | 4913 | case 'X': |
b3519f23 | 4914 | token = peek_token (&val, (unsigned *)0, cfile); |
be6be08d | 4915 | if (token == NUMBER_OR_NAME || token == NUMBER) { |
4bd8800e | 4916 | if (!expression_allocate (&t, MDL)) |
02a015fb | 4917 | return 0; |
8cc4d857 | 4918 | if (!parse_cshl (&t -> data.const_data, cfile)) { |
4bd8800e | 4919 | expression_dereference (&t, MDL); |
01e20b9e | 4920 | return 0; |
8cc4d857 | 4921 | } |
efc79acb | 4922 | t -> op = expr_const_data; |
be6be08d | 4923 | } else { |
98311e4b DH |
4924 | token = next_token (&val, &len, cfile); |
4925 | ||
4926 | if(token == STRING) { | |
4927 | if (!make_const_data (&t, | |
4928 | (const unsigned char *)val, | |
4929 | len, 1, 1, MDL)) | |
4930 | log_fatal ("No memory for \"%s\"", val); | |
4931 | } else if ((*fmt) [1] != 'o') { | |
d8fc5060 TL |
4932 | parse_warn (cfile, "expecting string %s.", |
4933 | "or hexadecimal data"); | |
4934 | skip_to_semi (cfile); | |
98311e4b DH |
4935 | } else { |
4936 | return 0; | |
d8fc5060 | 4937 | } |
be6be08d TL |
4938 | } |
4939 | break; | |
dba5803b DH |
4940 | |
4941 | case 'D': /* Domain list... */ | |
98bd7ca0 DH |
4942 | if ((*fmt)[1] == 'c') { |
4943 | compress = 1; | |
4944 | /* Skip the compress-flag atom. */ | |
4945 | (*fmt)++; | |
4946 | } else | |
4947 | compress = 0; | |
4948 | ||
4949 | t = parse_domain_list(cfile, compress); | |
dba5803b DH |
4950 | |
4951 | if (!t) { | |
4952 | if ((*fmt)[1] != 'o') | |
4953 | skip_to_semi(cfile); | |
4954 | return 0; | |
4955 | } | |
4956 | ||
4957 | break; | |
4958 | ||
d758ad8c TL |
4959 | case 'd': /* Domain name... */ |
4960 | val = parse_host_name (cfile); | |
4961 | if (!val) { | |
4962 | parse_warn (cfile, "not a valid domain name."); | |
4963 | skip_to_semi (cfile); | |
4964 | return 0; | |
4965 | } | |
4966 | len = strlen (val); | |
4967 | goto make_string; | |
4968 | ||
be6be08d | 4969 | case 't': /* Text string... */ |
98311e4b | 4970 | token = next_token (&val, &len, cfile); |
be6be08d | 4971 | if (token != STRING && !is_identifier (token)) { |
63a0ff88 | 4972 | if ((*fmt) [1] != 'o') { |
d8fc5060 TL |
4973 | parse_warn (cfile, "expecting string."); |
4974 | if (token != SEMI) | |
4975 | skip_to_semi (cfile); | |
4976 | } | |
02a015fb | 4977 | return 0; |
be6be08d | 4978 | } |
d758ad8c | 4979 | make_string: |
b1b7b521 | 4980 | if (!make_const_data (&t, (const unsigned char *)val, |
d758ad8c | 4981 | len, 1, 1, MDL)) |
8ae2d595 | 4982 | log_fatal ("No memory for concatenation"); |
be6be08d TL |
4983 | break; |
4984 | ||
42c6a803 | 4985 | case 'N': |
63a0ff88 | 4986 | f = (*fmt) + 1; |
b49c02cc TL |
4987 | g = strchr (*fmt, '.'); |
4988 | if (!g) { | |
42c6a803 TL |
4989 | parse_warn (cfile, "malformed %s (bug!)", |
4990 | "enumeration format"); | |
4991 | foo: | |
4992 | skip_to_semi (cfile); | |
4993 | return 0; | |
4994 | } | |
b49c02cc | 4995 | *fmt = g; |
b3519f23 | 4996 | token = next_token (&val, (unsigned *)0, cfile); |
42c6a803 TL |
4997 | if (!is_identifier (token)) { |
4998 | parse_warn (cfile, | |
4999 | "identifier expected"); | |
5000 | goto foo; | |
5001 | } | |
63a0ff88 | 5002 | e = find_enumeration_value (f, (*fmt) - f, val); |
42c6a803 TL |
5003 | if (!e) { |
5004 | parse_warn (cfile, "unknown value"); | |
5005 | goto foo; | |
5006 | } | |
d758ad8c | 5007 | if (!make_const_data (&t, &e -> value, 1, 0, 1, MDL)) |
42c6a803 TL |
5008 | return 0; |
5009 | break; | |
5010 | ||
be6be08d | 5011 | case 'I': /* IP address or hostname. */ |
02a015fb TL |
5012 | if (lookups) { |
5013 | if (!parse_ip_addr_or_hostname (&t, cfile, uniform)) | |
5014 | return 0; | |
5015 | } else { | |
be6be08d | 5016 | if (!parse_ip_addr (cfile, &addr)) |
02a015fb | 5017 | return 0; |
d758ad8c TL |
5018 | if (!make_const_data (&t, addr.iabuf, addr.len, |
5019 | 0, 1, MDL)) | |
02a015fb | 5020 | return 0; |
be6be08d | 5021 | } |
be6be08d | 5022 | break; |
98bd7ca0 DH |
5023 | |
5024 | case '6': /* IPv6 address. */ | |
5025 | if (!parse_ip6_addr(cfile, &addr)) { | |
5026 | return 0; | |
5027 | } | |
5028 | if (!make_const_data(&t, addr.iabuf, addr.len, 0, 1, MDL)) { | |
5029 | return 0; | |
5030 | } | |
5031 | break; | |
be6be08d | 5032 | |
fdac15d9 | 5033 | case 'T': /* Lease interval. */ |
98311e4b | 5034 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 TL |
5035 | if (token != INFINITE) |
5036 | goto check_number; | |
5037 | putLong (buf, -1); | |
d758ad8c | 5038 | if (!make_const_data (&t, buf, 4, 0, 1, MDL)) |
fdac15d9 TL |
5039 | return 0; |
5040 | break; | |
5041 | ||
be6be08d TL |
5042 | case 'L': /* Unsigned 32-bit integer... */ |
5043 | case 'l': /* Signed 32-bit integer... */ | |
98311e4b | 5044 | token = next_token (&val, (unsigned *)0, cfile); |
fdac15d9 | 5045 | check_number: |
98311e4b | 5046 | if ((token != NUMBER) && (token != NUMBER_OR_NAME)) { |
be6be08d | 5047 | need_number: |
63a0ff88 | 5048 | if ((*fmt) [1] != 'o') { |
d8fc5060 TL |
5049 | parse_warn (cfile, "expecting number."); |
5050 | if (token != SEMI) | |
5051 | skip_to_semi (cfile); | |
5052 | } | |
02a015fb | 5053 | return 0; |
be6be08d | 5054 | } |
4615d498 | 5055 | convert_num (cfile, buf, val, 0, 32); |
d758ad8c | 5056 | if (!make_const_data (&t, buf, 4, 0, 1, MDL)) |
02a015fb | 5057 | return 0; |
be6be08d | 5058 | break; |
02a015fb | 5059 | |
be6be08d TL |
5060 | case 's': /* Signed 16-bit integer. */ |
5061 | case 'S': /* Unsigned 16-bit integer. */ | |
b3519f23 | 5062 | token = next_token (&val, (unsigned *)0, cfile); |
98311e4b DH |
5063 | if ((token != NUMBER) && (token != NUMBER_OR_NAME)) |
5064 | goto need_number; | |
4615d498 | 5065 | convert_num (cfile, buf, val, 0, 16); |
d758ad8c | 5066 | if (!make_const_data (&t, buf, 2, 0, 1, MDL)) |
02a015fb | 5067 | return 0; |
be6be08d | 5068 | break; |
02a015fb | 5069 | |
be6be08d TL |
5070 | case 'b': /* Signed 8-bit integer. */ |
5071 | case 'B': /* Unsigned 8-bit integer. */ | |
b3519f23 | 5072 | token = next_token (&val, (unsigned *)0, cfile); |
98311e4b DH |
5073 | if ((token != NUMBER) && (token != NUMBER_OR_NAME)) |
5074 | goto need_number; | |
4615d498 | 5075 | convert_num (cfile, buf, val, 0, 8); |
d758ad8c | 5076 | if (!make_const_data (&t, buf, 1, 0, 1, MDL)) |
02a015fb | 5077 | return 0; |
be6be08d | 5078 | break; |
02a015fb | 5079 | |
be6be08d | 5080 | case 'f': /* Boolean flag. */ |
98311e4b | 5081 | token = next_token (&val, (unsigned *)0, cfile); |
be6be08d | 5082 | if (!is_identifier (token)) { |
63a0ff88 | 5083 | if ((*fmt) [1] != 'o') |
d8fc5060 | 5084 | parse_warn (cfile, "expecting identifier."); |
be6be08d | 5085 | bad_flag: |
63a0ff88 | 5086 | if ((*fmt) [1] != 'o') { |
d8fc5060 TL |
5087 | if (token != SEMI) |
5088 | skip_to_semi (cfile); | |
5089 | } | |
02a015fb | 5090 | return 0; |
be6be08d TL |
5091 | } |
5092 | if (!strcasecmp (val, "true") | |
5093 | || !strcasecmp (val, "on")) | |
5094 | buf [0] = 1; | |
5095 | else if (!strcasecmp (val, "false") | |
5096 | || !strcasecmp (val, "off")) | |
5097 | buf [0] = 0; | |
0776fd12 TL |
5098 | else if (!strcasecmp (val, "ignore")) |
5099 | buf [0] = 2; | |
be6be08d | 5100 | else { |
63a0ff88 | 5101 | if ((*fmt) [1] != 'o') |
d8fc5060 | 5102 | parse_warn (cfile, "expecting boolean."); |
be6be08d TL |
5103 | goto bad_flag; |
5104 | } | |
d758ad8c | 5105 | if (!make_const_data (&t, buf, 1, 0, 1, MDL)) |
02a015fb | 5106 | return 0; |
be6be08d | 5107 | break; |
02a015fb | 5108 | |
be6be08d | 5109 | default: |
f769d5ac | 5110 | parse_warn (cfile, "Bad format %c in parse_option_token.", |
63a0ff88 | 5111 | **fmt); |
be6be08d | 5112 | skip_to_semi (cfile); |
02a015fb | 5113 | return 0; |
be6be08d | 5114 | } |
02a015fb TL |
5115 | if (expr) { |
5116 | if (!make_concat (rv, expr, t)) | |
5117 | return 0; | |
02a015fb | 5118 | } else |
d758ad8c TL |
5119 | expression_reference (rv, t, MDL); |
5120 | expression_dereference (&t, MDL); | |
02a015fb | 5121 | return 1; |
be6be08d | 5122 | } |
74f45f96 | 5123 | |
9a7f6fcd TL |
5124 | int parse_option_decl (oc, cfile) |
5125 | struct option_cache **oc; | |
5126 | struct parse *cfile; | |
5127 | { | |
5128 | const char *val; | |
5129 | int token; | |
5130 | u_int8_t buf [4]; | |
5131 | u_int8_t hunkbuf [1024]; | |
5132 | unsigned hunkix = 0; | |
42c6a803 | 5133 | const char *fmt, *f; |
4cba29f0 | 5134 | struct option *option=NULL; |
9a7f6fcd TL |
5135 | struct iaddr ip_addr; |
5136 | u_int8_t *dp; | |
98bd7ca0 | 5137 | const u_int8_t *cdp; |
9a7f6fcd TL |
5138 | unsigned len; |
5139 | int nul_term = 0; | |
5140 | struct buffer *bp; | |
5141 | int known = 0; | |
98bd7ca0 DH |
5142 | int compress; |
5143 | struct expression *express = NULL; | |
42c6a803 | 5144 | struct enumeration_value *e; |
f7fdb216 | 5145 | isc_result_t status; |
9a7f6fcd | 5146 | |
f7fdb216 DH |
5147 | status = parse_option_name (cfile, 0, &known, &option); |
5148 | if (status != ISC_R_SUCCESS || option == NULL) | |
9a7f6fcd TL |
5149 | return 0; |
5150 | ||
5151 | /* Parse the option data... */ | |
5152 | do { | |
5153 | /* Set a flag if this is an array of a simple type (i.e., | |
5154 | not an array of pairs of IP addresses, or something | |
5155 | like that. */ | |
5156 | int uniform = option -> format [1] == 'A'; | |
5157 | ||
5158 | for (fmt = option -> format; *fmt; fmt++) { | |
5159 | if (*fmt == 'A') | |
5160 | break; | |
5161 | switch (*fmt) { | |
5162 | case 'E': | |
5163 | fmt = strchr (fmt, '.'); | |
5164 | if (!fmt) { | |
5165 | parse_warn (cfile, | |
5166 | "malformed %s (bug!)", | |
5167 | "encapsulation format"); | |
f7fdb216 | 5168 | goto parse_exit; |
9a7f6fcd TL |
5169 | } |
5170 | case 'X': | |
5171 | len = parse_X (cfile, &hunkbuf [hunkix], | |
5172 | sizeof hunkbuf - hunkix); | |
5173 | hunkix += len; | |
5174 | break; | |
5175 | ||
5176 | case 't': /* Text string... */ | |
b3519f23 TL |
5177 | token = next_token (&val, |
5178 | &len, cfile); | |
9a7f6fcd TL |
5179 | if (token != STRING) { |
5180 | parse_warn (cfile, | |
5181 | "expecting string."); | |
f7fdb216 | 5182 | goto parse_exit; |
9a7f6fcd | 5183 | } |
9a7f6fcd TL |
5184 | if (hunkix + len + 1 > sizeof hunkbuf) { |
5185 | parse_warn (cfile, | |
5186 | "option data buffer %s", | |
5187 | "overflow"); | |
f7fdb216 | 5188 | goto parse_exit; |
9a7f6fcd TL |
5189 | } |
5190 | memcpy (&hunkbuf [hunkix], val, len + 1); | |
5191 | nul_term = 1; | |
5192 | hunkix += len; | |
5193 | break; | |
5194 | ||
98bd7ca0 DH |
5195 | case 'D': |
5196 | if (fmt[1] == 'c') { | |
5197 | compress = 1; | |
5198 | fmt++; | |
5199 | } else | |
5200 | compress = 0; | |
5201 | ||
5202 | express = parse_domain_list(cfile, compress); | |
5203 | ||
5204 | if (express == NULL) | |
5205 | goto exit; | |
5206 | ||
5207 | if (express->op != expr_const_data) { | |
5208 | parse_warn(cfile, "unexpected " | |
5209 | "expression"); | |
5210 | goto parse_exit; | |
5211 | } | |
5212 | ||
5213 | len = express->data.const_data.len; | |
5214 | cdp = express->data.const_data.data; | |
5215 | ||
5216 | if ((hunkix + len) > sizeof(hunkbuf)) { | |
5217 | parse_warn(cfile, "option data buffer " | |
5218 | "overflow"); | |
5219 | goto parse_exit; | |
5220 | } | |
5221 | memcpy(&hunkbuf[hunkix], cdp, len); | |
5222 | hunkix += len; | |
5223 | ||
5224 | expression_dereference(&express, MDL); | |
5225 | break; | |
5226 | ||
42c6a803 TL |
5227 | case 'N': |
5228 | f = fmt; | |
5229 | fmt = strchr (fmt, '.'); | |
5230 | if (!fmt) { | |
5231 | parse_warn (cfile, | |
5232 | "malformed %s (bug!)", | |
5233 | "enumeration format"); | |
f7fdb216 | 5234 | goto parse_exit; |
42c6a803 | 5235 | } |
b3519f23 TL |
5236 | token = next_token (&val, |
5237 | (unsigned *)0, cfile); | |
42c6a803 TL |
5238 | if (!is_identifier (token)) { |
5239 | parse_warn (cfile, | |
5240 | "identifier expected"); | |
f7fdb216 | 5241 | goto parse_exit; |
42c6a803 TL |
5242 | } |
5243 | e = find_enumeration_value (f, fmt - f, val); | |
5244 | if (!e) { | |
5245 | parse_warn (cfile, | |
5246 | "unknown value"); | |
f7fdb216 | 5247 | goto parse_exit; |
42c6a803 TL |
5248 | } |
5249 | len = 1; | |
5250 | dp = &e -> value; | |
5251 | goto alloc; | |
5252 | ||
98bd7ca0 DH |
5253 | case '6': |
5254 | if (!parse_ip6_addr(cfile, &ip_addr)) | |
5255 | goto exit; | |
5256 | len = ip_addr.len; | |
5257 | dp = ip_addr.iabuf; | |
5258 | goto alloc; | |
5259 | ||
9a7f6fcd TL |
5260 | case 'I': /* IP address. */ |
5261 | if (!parse_ip_addr (cfile, &ip_addr)) | |
f7fdb216 | 5262 | goto exit; |
9a7f6fcd TL |
5263 | len = ip_addr.len; |
5264 | dp = ip_addr.iabuf; | |
5265 | ||
5266 | alloc: | |
5267 | if (hunkix + len > sizeof hunkbuf) { | |
5268 | parse_warn (cfile, | |
5269 | "option data buffer %s", | |
5270 | "overflow"); | |
f7fdb216 | 5271 | goto parse_exit; |
9a7f6fcd TL |
5272 | } |
5273 | memcpy (&hunkbuf [hunkix], dp, len); | |
5274 | hunkix += len; | |
5275 | break; | |
5276 | ||
5277 | case 'L': /* Unsigned 32-bit integer... */ | |
5278 | case 'l': /* Signed 32-bit integer... */ | |
b3519f23 TL |
5279 | token = next_token (&val, |
5280 | (unsigned *)0, cfile); | |
98311e4b DH |
5281 | if ((token != NUMBER) && |
5282 | (token != NUMBER_OR_NAME)) { | |
9a7f6fcd TL |
5283 | need_number: |
5284 | parse_warn (cfile, | |
5285 | "expecting number."); | |
5286 | if (token != SEMI) | |
f7fdb216 DH |
5287 | goto parse_exit; |
5288 | else | |
5289 | goto exit; | |
9a7f6fcd TL |
5290 | } |
5291 | convert_num (cfile, buf, val, 0, 32); | |
5292 | len = 4; | |
5293 | dp = buf; | |
5294 | goto alloc; | |
5295 | ||
5296 | case 's': /* Signed 16-bit integer. */ | |
5297 | case 'S': /* Unsigned 16-bit integer. */ | |
b3519f23 TL |
5298 | token = next_token (&val, |
5299 | (unsigned *)0, cfile); | |
98311e4b DH |
5300 | if ((token != NUMBER) && |
5301 | (token != NUMBER_OR_NAME)) | |
9a7f6fcd TL |
5302 | goto need_number; |
5303 | convert_num (cfile, buf, val, 0, 16); | |
5304 | len = 2; | |
5305 | dp = buf; | |
5306 | goto alloc; | |
5307 | ||
5308 | case 'b': /* Signed 8-bit integer. */ | |
5309 | case 'B': /* Unsigned 8-bit integer. */ | |
b3519f23 TL |
5310 | token = next_token (&val, |
5311 | (unsigned *)0, cfile); | |
98311e4b DH |
5312 | if ((token != NUMBER) && |
5313 | (token != NUMBER_OR_NAME)) | |
9a7f6fcd TL |
5314 | goto need_number; |
5315 | convert_num (cfile, buf, val, 0, 8); | |
5316 | len = 1; | |
5317 | dp = buf; | |
5318 | goto alloc; | |
5319 | ||
5320 | case 'f': /* Boolean flag. */ | |
b3519f23 TL |
5321 | token = next_token (&val, |
5322 | (unsigned *)0, cfile); | |
9a7f6fcd TL |
5323 | if (!is_identifier (token)) { |
5324 | parse_warn (cfile, | |
5325 | "expecting identifier."); | |
5326 | bad_flag: | |
5327 | if (token != SEMI) | |
f7fdb216 DH |
5328 | goto parse_exit; |
5329 | else | |
5330 | goto exit; | |
9a7f6fcd TL |
5331 | } |
5332 | if (!strcasecmp (val, "true") | |
5333 | || !strcasecmp (val, "on")) | |
5334 | buf [0] = 1; | |
5335 | else if (!strcasecmp (val, "false") | |
5336 | || !strcasecmp (val, "off")) | |
5337 | buf [0] = 0; | |
5338 | else { | |
5339 | parse_warn (cfile, | |
5340 | "expecting boolean."); | |
5341 | goto bad_flag; | |
5342 | } | |
5343 | len = 1; | |
5344 | dp = buf; | |
5345 | goto alloc; | |
5346 | ||
5347 | default: | |
5348 | log_error ("parse_option_param: Bad format %c", | |
5349 | *fmt); | |
f7fdb216 | 5350 | goto parse_exit; |
9a7f6fcd TL |
5351 | } |
5352 | } | |
b3519f23 | 5353 | token = next_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
5354 | } while (*fmt == 'A' && token == COMMA); |
5355 | ||
5356 | if (token != SEMI) { | |
5357 | parse_warn (cfile, "semicolon expected."); | |
f7fdb216 | 5358 | goto parse_exit; |
9a7f6fcd TL |
5359 | } |
5360 | ||
5361 | bp = (struct buffer *)0; | |
5362 | if (!buffer_allocate (&bp, hunkix + nul_term, MDL)) | |
5363 | log_fatal ("no memory to store option declaration."); | |
5364 | if (!bp -> data) | |
5365 | log_fatal ("out of memory allocating option data."); | |
5366 | memcpy (bp -> data, hunkbuf, hunkix + nul_term); | |
5367 | ||
5368 | if (!option_cache_allocate (oc, MDL)) | |
5369 | log_fatal ("out of memory allocating option cache."); | |
5370 | ||
5371 | (*oc) -> data.buffer = bp; | |
5372 | (*oc) -> data.data = &bp -> data [0]; | |
5373 | (*oc) -> data.terminated = nul_term; | |
5374 | (*oc) -> data.len = hunkix; | |
f7fdb216 DH |
5375 | option_reference(&(*oc)->option, option, MDL); |
5376 | option_dereference(&option, MDL); | |
9a7f6fcd | 5377 | return 1; |
f7fdb216 DH |
5378 | |
5379 | parse_exit: | |
98bd7ca0 DH |
5380 | if (express != NULL) |
5381 | expression_dereference(&express, MDL); | |
f7fdb216 DH |
5382 | skip_to_semi (cfile); |
5383 | exit: | |
5384 | option_dereference(&option, MDL); | |
5385 | ||
5386 | return 0; | |
9a7f6fcd TL |
5387 | } |
5388 | ||
5389 | /* Consider merging parse_cshl into this. */ | |
5390 | ||
5391 | int parse_X (cfile, buf, max) | |
5392 | struct parse *cfile; | |
5393 | u_int8_t *buf; | |
5394 | unsigned max; | |
5395 | { | |
5396 | int token; | |
5397 | const char *val; | |
5398 | unsigned len; | |
5399 | u_int8_t *s; | |
5400 | ||
b3519f23 | 5401 | token = peek_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
5402 | if (token == NUMBER_OR_NAME || token == NUMBER) { |
5403 | len = 0; | |
5404 | do { | |
b3519f23 | 5405 | token = next_token (&val, (unsigned *)0, cfile); |
9a7f6fcd TL |
5406 | if (token != NUMBER && token != NUMBER_OR_NAME) { |
5407 | parse_warn (cfile, | |
5408 | "expecting hexadecimal constant."); | |
5409 | skip_to_semi (cfile); | |
5410 | return 0; | |
5411 | } | |
5412 | convert_num (cfile, &buf [len], val, 16, 8); | |
5413 | if (len++ > max) { | |
5414 | parse_warn (cfile, | |
5415 | "hexadecimal constant too long."); | |
5416 | skip_to_semi (cfile); | |
5417 | return 0; | |
5418 | } | |
b3519f23 | 5419 | token = peek_token (&val, (unsigned *)0, cfile); |
9a7f6fcd | 5420 | if (token == COLON) |
b3519f23 TL |
5421 | token = next_token (&val, |
5422 | (unsigned *)0, cfile); | |
9a7f6fcd TL |
5423 | } while (token == COLON); |
5424 | val = (char *)buf; | |
5425 | } else if (token == STRING) { | |
b3519f23 | 5426 | token = next_token (&val, &len, cfile); |
9a7f6fcd TL |
5427 | if (len + 1 > max) { |
5428 | parse_warn (cfile, "string constant too long."); | |
5429 | skip_to_semi (cfile); | |
5430 | return 0; | |
5431 | } | |
5432 | memcpy (buf, val, len + 1); | |
5433 | } else { | |
5434 | parse_warn (cfile, "expecting string or hexadecimal data"); | |
5435 | skip_to_semi (cfile); | |
5436 | return 0; | |
5437 | } | |
5438 | return len; | |
5439 | } | |
5440 | ||
cfdfb9f1 | 5441 | int parse_warn (struct parse *cfile, const char *fmt, ...) |
4bd8800e TL |
5442 | { |
5443 | va_list list; | |
4bd8800e TL |
5444 | char lexbuf [256]; |
5445 | char mbuf [1024]; | |
5446 | char fbuf [1024]; | |
5447 | unsigned i, lix; | |
5448 | ||
5449 | do_percentm (mbuf, fmt); | |
98311e4b DH |
5450 | /* %Audit% This is log output. %2004.06.17,Safe% |
5451 | * If we truncate we hope the user can get a hint from the log. | |
5452 | */ | |
4bd8800e TL |
5453 | snprintf (fbuf, sizeof fbuf, "%s line %d: %s", |
5454 | cfile -> tlname, cfile -> lexline, mbuf); | |
4bd8800e | 5455 | |
cfdfb9f1 | 5456 | va_start (list, fmt); |
4bd8800e TL |
5457 | vsnprintf (mbuf, sizeof mbuf, fbuf, list); |
5458 | va_end (list); | |
5459 | ||
5460 | lix = 0; | |
5461 | for (i = 0; | |
5462 | cfile -> token_line [i] && i < (cfile -> lexchar - 1); i++) { | |
5463 | if (lix < (sizeof lexbuf) - 1) | |
5464 | lexbuf [lix++] = ' '; | |
5465 | if (cfile -> token_line [i] == '\t') { | |
5466 | for (lix; | |
5467 | lix < (sizeof lexbuf) - 1 && (lix & 7); lix++) | |
5468 | lexbuf [lix] = ' '; | |
5469 | } | |
5470 | } | |
5471 | lexbuf [lix] = 0; | |
5472 | ||
5473 | #ifndef DEBUG | |
4f9e9f47 TL |
5474 | syslog (log_priority | LOG_ERR, "%s", mbuf); |
5475 | syslog (log_priority | LOG_ERR, "%s", cfile -> token_line); | |
4bd8800e TL |
5476 | if (cfile -> lexchar < 81) |
5477 | syslog (log_priority | LOG_ERR, "%s^", lexbuf); | |
5478 | #endif | |
5479 | ||
5480 | if (log_perror) { | |
98311e4b DH |
5481 | write (STDERR_FILENO, mbuf, strlen (mbuf)); |
5482 | write (STDERR_FILENO, "\n", 1); | |
5483 | write (STDERR_FILENO, cfile -> token_line, | |
5484 | strlen (cfile -> token_line)); | |
5485 | write (STDERR_FILENO, "\n", 1); | |
4bd8800e | 5486 | if (cfile -> lexchar < 81) |
98311e4b DH |
5487 | write (STDERR_FILENO, lexbuf, lix); |
5488 | write (STDERR_FILENO, "^\n", 2); | |
4bd8800e TL |
5489 | } |
5490 | ||
5491 | cfile -> warnings_occurred = 1; | |
5492 | ||
5493 | return 0; | |
5494 | } | |
dba5803b DH |
5495 | |
5496 | struct expression * | |
98bd7ca0 | 5497 | parse_domain_list(struct parse *cfile, int compress) |
dba5803b DH |
5498 | { |
5499 | const char *val; | |
5500 | enum dhcp_token token = SEMI; | |
5501 | struct expression *t = NULL; | |
5502 | unsigned len, clen = 0; | |
5503 | int result; | |
5504 | unsigned char compbuf[256 * NS_MAXCDNAME]; | |
5505 | const unsigned char *dnptrs[256], **lastdnptr; | |
5506 | ||
5507 | memset(compbuf, 0, sizeof(compbuf)); | |
5508 | memset(dnptrs, 0, sizeof(dnptrs)); | |
5509 | dnptrs[0] = compbuf; | |
5510 | lastdnptr = &dnptrs[255]; | |
5511 | ||
5512 | do { | |
5513 | /* Consume the COMMA token if peeked. */ | |
5514 | if (token == COMMA) | |
5515 | next_token(&val, NULL, cfile); | |
5516 | ||
5517 | /* Get next (or first) value. */ | |
5518 | token = next_token(&val, &len, cfile); | |
5519 | ||
5520 | if (token != STRING) { | |
5521 | parse_warn(cfile, "Expecting a domain string."); | |
5522 | return NULL; | |
5523 | } | |
5524 | ||
98bd7ca0 DH |
5525 | /* If compression pointers are enabled, compress. If not, |
5526 | * just pack the names in series into the buffer. | |
5527 | */ | |
5528 | if (compress) { | |
5529 | result = MRns_name_compress(val, compbuf + clen, | |
5530 | sizeof(compbuf) - clen, | |
5531 | dnptrs, lastdnptr); | |
5532 | ||
5533 | if (result < 0) { | |
5534 | parse_warn(cfile, "Error compressing domain " | |
5535 | "list: %m"); | |
5536 | return NULL; | |
5537 | } | |
dba5803b | 5538 | |
98bd7ca0 DH |
5539 | clen += result; |
5540 | } else { | |
5541 | result = MRns_name_pton(val, compbuf + clen, | |
5542 | sizeof(compbuf) - clen); | |
5543 | ||
5544 | /* result == 1 means the input was fully qualified. | |
5545 | * result == 0 means the input wasn't. | |
5546 | * result == -1 means bad things. | |
5547 | */ | |
5548 | if (result < 0) { | |
5549 | parse_warn(cfile, "Error assembling domain " | |
5550 | "list: %m"); | |
5551 | return NULL; | |
5552 | } | |
5553 | ||
5554 | /* | |
5555 | * We need to figure out how many bytes to increment | |
5556 | * our buffer pointer since pton doesn't tell us. | |
5557 | */ | |
5558 | while (compbuf[clen] != 0) | |
5559 | clen += compbuf[clen] + 1; | |
5560 | ||
5561 | /* Count the last label (0). */ | |
5562 | clen++; | |
dba5803b DH |
5563 | } |
5564 | ||
98bd7ca0 DH |
5565 | if (clen > sizeof(compbuf)) |
5566 | log_fatal("Impossible error at %s:%d", MDL); | |
dba5803b DH |
5567 | |
5568 | token = peek_token(&val, NULL, cfile); | |
5569 | } while (token == COMMA); | |
5570 | ||
5571 | if (!make_const_data(&t, compbuf, clen, 1, 1, MDL)) | |
5572 | log_fatal("No memory for domain list object."); | |
5573 | ||
5574 | return t; | |
5575 | } | |
5576 |