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Commit | Line | Data |
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63115431 TL |
1 | /* parse.c |
2 | ||
3 | Common parser code for dhcpd and dhclient. */ | |
4 | ||
5 | /* | |
f39b6e00 TL |
6 | * Copyright (c) 1996-1999 Internet Software Consortium. |
7 | * Use is subject to license terms which appear in the file named | |
8 | * ISC-LICENSE that should have accompanied this file when you | |
9 | * received it. If a file named ISC-LICENSE did not accompany this | |
10 | * file, or you are not sure the one you have is correct, you may | |
11 | * obtain an applicable copy of the license at: | |
63115431 | 12 | * |
f39b6e00 | 13 | * http://www.isc.org/isc-license-1.0.html. |
63115431 | 14 | * |
f39b6e00 TL |
15 | * This file is part of the ISC DHCP distribution. The documentation |
16 | * associated with this file is listed in the file DOCUMENTATION, | |
17 | * included in the top-level directory of this release. | |
63115431 | 18 | * |
f39b6e00 TL |
19 | * Support and other services are available for ISC products - see |
20 | * http://www.isc.org for more information. | |
63115431 TL |
21 | */ |
22 | ||
23 | #ifndef lint | |
24 | static char copyright[] = | |
4bd8800e | 25 | "$Id: parse.c,v 1.60 2000/01/26 14:55:34 mellon Exp $ Copyright (c) 1995, 1996, 1997, 1998, 1999 The Internet Software Consortium. All rights reserved.\n"; |
63115431 TL |
26 | #endif /* not lint */ |
27 | ||
28 | #include "dhcpd.h" | |
63115431 TL |
29 | |
30 | /* Skip to the semicolon ending the current statement. If we encounter | |
31 | braces, the matching closing brace terminates the statement. If we | |
32 | encounter a right brace but haven't encountered a left brace, return | |
33 | leaving the brace in the token buffer for the caller. If we see a | |
34 | semicolon and haven't seen a left brace, return. This lets us skip | |
35 | over: | |
36 | ||
37 | statement; | |
38 | statement foo bar { } | |
39 | statement foo bar { statement { } } | |
40 | statement} | |
41 | ||
42 | ...et cetera. */ | |
43 | ||
44 | void skip_to_semi (cfile) | |
4615d498 | 45 | struct parse *cfile; |
cea8b5c9 TL |
46 | { |
47 | skip_to_rbrace (cfile, 0); | |
48 | } | |
49 | ||
50 | void skip_to_rbrace (cfile, brace_count) | |
4615d498 | 51 | struct parse *cfile; |
cea8b5c9 | 52 | int brace_count; |
63115431 | 53 | { |
02a015fb | 54 | enum dhcp_token token; |
b1b7b521 | 55 | const char *val; |
63115431 | 56 | |
f579f39f TL |
57 | #if defined (DEBUG_TOKEN) |
58 | log_error ("skip_to_rbrace: %d\n", brace_count); | |
59 | #endif | |
63115431 TL |
60 | do { |
61 | token = peek_token (&val, cfile); | |
62 | if (token == RBRACE) { | |
efc79acb | 63 | token = next_token (&val, cfile); |
63115431 | 64 | if (brace_count) { |
63115431 TL |
65 | if (!--brace_count) |
66 | return; | |
67 | } else | |
68 | return; | |
69 | } else if (token == LBRACE) { | |
70 | brace_count++; | |
71 | } else if (token == SEMI && !brace_count) { | |
72 | token = next_token (&val, cfile); | |
73 | return; | |
796ef008 TL |
74 | } else if (token == EOL) { |
75 | /* EOL only happens when parsing /etc/resolv.conf, | |
76 | and we treat it like a semicolon because the | |
77 | resolv.conf file is line-oriented. */ | |
78 | token = next_token (&val, cfile); | |
79 | return; | |
63115431 TL |
80 | } |
81 | token = next_token (&val, cfile); | |
82 | } while (token != EOF); | |
83 | } | |
84 | ||
85 | int parse_semi (cfile) | |
4615d498 | 86 | struct parse *cfile; |
63115431 | 87 | { |
02a015fb | 88 | enum dhcp_token token; |
b1b7b521 | 89 | const char *val; |
63115431 TL |
90 | |
91 | token = next_token (&val, cfile); | |
92 | if (token != SEMI) { | |
4615d498 | 93 | parse_warn (cfile, "semicolon expected."); |
63115431 TL |
94 | skip_to_semi (cfile); |
95 | return 0; | |
96 | } | |
97 | return 1; | |
98 | } | |
99 | ||
100 | /* string-parameter :== STRING SEMI */ | |
101 | ||
102 | char *parse_string (cfile) | |
4615d498 | 103 | struct parse *cfile; |
63115431 | 104 | { |
b1b7b521 | 105 | const char *val; |
02a015fb | 106 | enum dhcp_token token; |
63115431 TL |
107 | char *s; |
108 | ||
109 | token = next_token (&val, cfile); | |
110 | if (token != STRING) { | |
4615d498 | 111 | parse_warn (cfile, "filename must be a string"); |
63115431 TL |
112 | skip_to_semi (cfile); |
113 | return (char *)0; | |
114 | } | |
fdac15d9 | 115 | s = (char *)dmalloc (strlen (val) + 1, MDL); |
63115431 | 116 | if (!s) |
8ae2d595 | 117 | log_fatal ("no memory for string %s.", val); |
63115431 TL |
118 | strcpy (s, val); |
119 | ||
120 | if (!parse_semi (cfile)) | |
121 | return (char *)0; | |
122 | return s; | |
123 | } | |
124 | ||
be6be08d TL |
125 | /* |
126 | * hostname :== IDENTIFIER | |
127 | * | IDENTIFIER DOT | |
128 | * | hostname DOT IDENTIFIER | |
129 | */ | |
796ef008 TL |
130 | |
131 | char *parse_host_name (cfile) | |
4615d498 | 132 | struct parse *cfile; |
796ef008 | 133 | { |
b1b7b521 | 134 | const char *val; |
02a015fb | 135 | enum dhcp_token token; |
b1b7b521 | 136 | unsigned len = 0; |
796ef008 TL |
137 | char *s; |
138 | char *t; | |
139 | pair c = (pair)0; | |
140 | ||
141 | /* Read a dotted hostname... */ | |
142 | do { | |
143 | /* Read a token, which should be an identifier. */ | |
68dda014 TL |
144 | token = peek_token (&val, cfile); |
145 | if (!is_identifier (token) && token != NUMBER) | |
146 | break; | |
796ef008 | 147 | token = next_token (&val, cfile); |
68dda014 | 148 | |
796ef008 | 149 | /* Store this identifier... */ |
fdac15d9 | 150 | if (!(s = (char *)dmalloc (strlen (val) + 1, MDL))) |
8ae2d595 | 151 | log_fatal ("can't allocate temp space for hostname."); |
796ef008 TL |
152 | strcpy (s, val); |
153 | c = cons ((caddr_t)s, c); | |
154 | len += strlen (s) + 1; | |
155 | /* Look for a dot; if it's there, keep going, otherwise | |
156 | we're done. */ | |
157 | token = peek_token (&val, cfile); | |
158 | if (token == DOT) | |
159 | token = next_token (&val, cfile); | |
160 | } while (token == DOT); | |
161 | ||
162 | /* Assemble the hostname together into a string. */ | |
fdac15d9 | 163 | if (!(s = (char *)dmalloc (len, MDL))) |
8ae2d595 | 164 | log_fatal ("can't allocate space for hostname."); |
796ef008 TL |
165 | t = s + len; |
166 | *--t = 0; | |
167 | while (c) { | |
168 | pair cdr = c -> cdr; | |
b1b7b521 | 169 | unsigned l = strlen ((char *)(c -> car)); |
796ef008 TL |
170 | t -= l; |
171 | memcpy (t, (char *)(c -> car), l); | |
172 | /* Free up temp space. */ | |
fdac15d9 TL |
173 | dfree (c -> car, MDL); |
174 | dfree (c, MDL); | |
796ef008 TL |
175 | c = cdr; |
176 | if (t != s) | |
177 | *--t = '.'; | |
178 | } | |
179 | return s; | |
180 | } | |
181 | ||
be6be08d TL |
182 | /* ip-addr-or-hostname :== ip-address | hostname |
183 | ip-address :== NUMBER DOT NUMBER DOT NUMBER DOT NUMBER | |
184 | ||
185 | Parse an ip address or a hostname. If uniform is zero, put in | |
186 | an expr_substring node to limit hostnames that evaluate to more | |
187 | than one IP address. */ | |
188 | ||
02a015fb TL |
189 | int parse_ip_addr_or_hostname (expr, cfile, uniform) |
190 | struct expression **expr; | |
4615d498 | 191 | struct parse *cfile; |
be6be08d TL |
192 | int uniform; |
193 | { | |
b1b7b521 | 194 | const char *val; |
02a015fb | 195 | enum dhcp_token token; |
be6be08d | 196 | unsigned char addr [4]; |
b1b7b521 | 197 | unsigned len = sizeof addr; |
be6be08d | 198 | char *name; |
02a015fb | 199 | struct expression *x = (struct expression *)0; |
be6be08d TL |
200 | |
201 | token = peek_token (&val, cfile); | |
202 | if (is_identifier (token)) { | |
203 | name = parse_host_name (cfile); | |
204 | if (!name) | |
02a015fb TL |
205 | return 0; |
206 | if (!make_host_lookup (expr, name)) | |
207 | return 0; | |
208 | if (!uniform) { | |
209 | if (!make_limit (&x, *expr, 4)) | |
210 | return 0; | |
4bd8800e | 211 | expression_dereference (expr, MDL); |
02a015fb TL |
212 | *expr = x; |
213 | } | |
be6be08d TL |
214 | } else if (token == NUMBER) { |
215 | if (!parse_numeric_aggregate (cfile, addr, &len, DOT, 10, 8)) | |
02a015fb TL |
216 | return 0; |
217 | return make_const_data (expr, addr, len, 0, 1); | |
be6be08d TL |
218 | } else { |
219 | if (token != RBRACE && token != LBRACE) | |
220 | token = next_token (&val, cfile); | |
4615d498 | 221 | parse_warn (cfile, "%s (%d): expecting IP address or hostname", |
be6be08d TL |
222 | val, token); |
223 | if (token != SEMI) | |
224 | skip_to_semi (cfile); | |
02a015fb | 225 | return 0; |
be6be08d TL |
226 | } |
227 | ||
02a015fb | 228 | return 1; |
be6be08d TL |
229 | } |
230 | ||
231 | /* | |
232 | * ip-address :== NUMBER DOT NUMBER DOT NUMBER DOT NUMBER | |
233 | */ | |
234 | ||
796ef008 | 235 | int parse_ip_addr (cfile, addr) |
4615d498 | 236 | struct parse *cfile; |
796ef008 TL |
237 | struct iaddr *addr; |
238 | { | |
b1b7b521 | 239 | const char *val; |
02a015fb | 240 | enum dhcp_token token; |
796ef008 TL |
241 | |
242 | addr -> len = 4; | |
243 | if (parse_numeric_aggregate (cfile, addr -> iabuf, | |
244 | &addr -> len, DOT, 10, 8)) | |
245 | return 1; | |
246 | return 0; | |
247 | } | |
248 | ||
be6be08d TL |
249 | /* |
250 | * hardware-parameter :== HARDWARE hardware-type colon-seperated-hex-list SEMI | |
251 | * hardware-type :== ETHERNET | TOKEN_RING | |
252 | */ | |
63115431 TL |
253 | |
254 | void parse_hardware_param (cfile, hardware) | |
4615d498 | 255 | struct parse *cfile; |
63115431 TL |
256 | struct hardware *hardware; |
257 | { | |
b1b7b521 | 258 | const char *val; |
02a015fb | 259 | enum dhcp_token token; |
e703795d | 260 | unsigned hlen; |
63115431 TL |
261 | unsigned char *t; |
262 | ||
263 | token = next_token (&val, cfile); | |
264 | switch (token) { | |
265 | case ETHERNET: | |
9fb2fb28 | 266 | hardware -> hbuf [0] = HTYPE_ETHER; |
63115431 TL |
267 | break; |
268 | case TOKEN_RING: | |
9fb2fb28 | 269 | hardware -> hbuf [0] = HTYPE_IEEE802; |
63115431 | 270 | break; |
cea8b5c9 | 271 | case FDDI: |
9fb2fb28 | 272 | hardware -> hbuf [0] = HTYPE_FDDI; |
cea8b5c9 | 273 | break; |
63115431 | 274 | default: |
4615d498 | 275 | parse_warn (cfile, "expecting a network hardware type"); |
63115431 TL |
276 | skip_to_semi (cfile); |
277 | return; | |
278 | } | |
279 | ||
280 | /* Parse the hardware address information. Technically, | |
281 | it would make a lot of sense to restrict the length of the | |
282 | data we'll accept here to the length of a particular hardware | |
283 | address type. Unfortunately, there are some broken clients | |
284 | out there that put bogus data in the chaddr buffer, and we accept | |
285 | that data in the lease file rather than simply failing on such | |
286 | clients. Yuck. */ | |
287 | hlen = 0; | |
288 | t = parse_numeric_aggregate (cfile, (unsigned char *)0, &hlen, | |
289 | COLON, 16, 8); | |
290 | if (!t) | |
291 | return; | |
9fb2fb28 | 292 | if (hlen + 1 > sizeof hardware -> hbuf) { |
fdac15d9 | 293 | dfree (t, MDL); |
4615d498 | 294 | parse_warn (cfile, "hardware address too long"); |
63115431 | 295 | } else { |
9fb2fb28 TL |
296 | hardware -> hlen = hlen + 1; |
297 | memcpy ((unsigned char *)&hardware -> hbuf [1], t, hlen); | |
298 | if (hlen + 1 < sizeof hardware -> hbuf) | |
299 | memset (&hardware -> hbuf [hlen + 1], 0, | |
300 | (sizeof hardware -> hbuf) - hlen - 1); | |
fdac15d9 | 301 | dfree (t, MDL); |
63115431 TL |
302 | } |
303 | ||
304 | token = next_token (&val, cfile); | |
305 | if (token != SEMI) { | |
4615d498 | 306 | parse_warn (cfile, "expecting semicolon."); |
63115431 TL |
307 | skip_to_semi (cfile); |
308 | } | |
309 | } | |
310 | ||
311 | /* lease-time :== NUMBER SEMI */ | |
312 | ||
313 | void parse_lease_time (cfile, timep) | |
4615d498 | 314 | struct parse *cfile; |
63115431 TL |
315 | TIME *timep; |
316 | { | |
b1b7b521 | 317 | const char *val; |
02a015fb | 318 | enum dhcp_token token; |
63115431 TL |
319 | |
320 | token = next_token (&val, cfile); | |
321 | if (token != NUMBER) { | |
4615d498 | 322 | parse_warn (cfile, "Expecting numeric lease time"); |
63115431 TL |
323 | skip_to_semi (cfile); |
324 | return; | |
325 | } | |
4615d498 | 326 | convert_num (cfile, (unsigned char *)timep, val, 10, 32); |
63115431 TL |
327 | /* Unswap the number - convert_num returns stuff in NBO. */ |
328 | *timep = ntohl (*timep); /* XXX */ | |
329 | ||
330 | parse_semi (cfile); | |
331 | } | |
332 | ||
333 | /* No BNF for numeric aggregates - that's defined by the caller. What | |
334 | this function does is to parse a sequence of numbers seperated by | |
335 | the token specified in seperator. If max is zero, any number of | |
336 | numbers will be parsed; otherwise, exactly max numbers are | |
337 | expected. Base and size tell us how to internalize the numbers | |
338 | once they've been tokenized. */ | |
339 | ||
340 | unsigned char *parse_numeric_aggregate (cfile, buf, | |
341 | max, seperator, base, size) | |
4615d498 | 342 | struct parse *cfile; |
63115431 | 343 | unsigned char *buf; |
b1b7b521 | 344 | unsigned *max; |
63115431 TL |
345 | int seperator; |
346 | int base; | |
b1b7b521 | 347 | unsigned size; |
63115431 | 348 | { |
b1b7b521 | 349 | const char *val; |
02a015fb | 350 | enum dhcp_token token; |
63115431 | 351 | unsigned char *bufp = buf, *s, *t; |
b1b7b521 | 352 | unsigned count = 0; |
63115431 TL |
353 | pair c = (pair)0; |
354 | ||
355 | if (!bufp && *max) { | |
fdac15d9 | 356 | bufp = (unsigned char *)dmalloc (*max * size / 8, MDL); |
63115431 | 357 | if (!bufp) |
1ff8f8ea TL |
358 | log_fatal ("no space for numeric aggregate"); |
359 | s = 0; | |
63115431 TL |
360 | } else |
361 | s = bufp; | |
362 | ||
363 | do { | |
364 | if (count) { | |
365 | token = peek_token (&val, cfile); | |
366 | if (token != seperator) { | |
367 | if (!*max) | |
368 | break; | |
369 | if (token != RBRACE && token != LBRACE) | |
370 | token = next_token (&val, cfile); | |
4615d498 | 371 | parse_warn (cfile, "too few numbers."); |
63115431 TL |
372 | if (token != SEMI) |
373 | skip_to_semi (cfile); | |
374 | return (unsigned char *)0; | |
375 | } | |
376 | token = next_token (&val, cfile); | |
377 | } | |
378 | token = next_token (&val, cfile); | |
379 | ||
380 | if (token == EOF) { | |
4615d498 | 381 | parse_warn (cfile, "unexpected end of file"); |
63115431 TL |
382 | break; |
383 | } | |
384 | ||
385 | /* Allow NUMBER_OR_NAME if base is 16. */ | |
386 | if (token != NUMBER && | |
387 | (base != 16 || token != NUMBER_OR_NAME)) { | |
4615d498 | 388 | parse_warn (cfile, "expecting numeric value."); |
63115431 TL |
389 | skip_to_semi (cfile); |
390 | return (unsigned char *)0; | |
391 | } | |
392 | /* If we can, convert the number now; otherwise, build | |
393 | a linked list of all the numbers. */ | |
394 | if (s) { | |
4615d498 | 395 | convert_num (cfile, s, val, base, size); |
63115431 TL |
396 | s += size / 8; |
397 | } else { | |
fdac15d9 | 398 | t = (unsigned char *)dmalloc (strlen (val) + 1, MDL); |
63115431 | 399 | if (!t) |
8ae2d595 | 400 | log_fatal ("no temp space for number."); |
338303a4 TL |
401 | strcpy ((char *)t, val); |
402 | c = cons ((caddr_t)t, c); | |
63115431 TL |
403 | } |
404 | } while (++count != *max); | |
405 | ||
406 | /* If we had to cons up a list, convert it now. */ | |
407 | if (c) { | |
fdac15d9 | 408 | bufp = (unsigned char *)dmalloc (count * size / 8, MDL); |
63115431 | 409 | if (!bufp) |
1ff8f8ea | 410 | log_fatal ("no space for numeric aggregate."); |
63115431 TL |
411 | s = bufp + count - size / 8; |
412 | *max = count; | |
413 | } | |
414 | while (c) { | |
415 | pair cdr = c -> cdr; | |
4615d498 | 416 | convert_num (cfile, s, (char *)(c -> car), base, size); |
63115431 TL |
417 | s -= size / 8; |
418 | /* Free up temp space. */ | |
fdac15d9 TL |
419 | dfree (c -> car, MDL); |
420 | dfree (c, MDL); | |
63115431 TL |
421 | c = cdr; |
422 | } | |
423 | return bufp; | |
424 | } | |
425 | ||
4615d498 TL |
426 | void convert_num (cfile, buf, str, base, size) |
427 | struct parse *cfile; | |
63115431 | 428 | unsigned char *buf; |
b1b7b521 | 429 | const char *str; |
63115431 | 430 | int base; |
b1b7b521 | 431 | unsigned size; |
63115431 | 432 | { |
b1b7b521 | 433 | const char *ptr = str; |
63115431 TL |
434 | int negative = 0; |
435 | u_int32_t val = 0; | |
436 | int tval; | |
437 | int max; | |
438 | ||
439 | if (*ptr == '-') { | |
440 | negative = 1; | |
441 | ++ptr; | |
442 | } | |
443 | ||
444 | /* If base wasn't specified, figure it out from the data. */ | |
445 | if (!base) { | |
446 | if (ptr [0] == '0') { | |
447 | if (ptr [1] == 'x') { | |
448 | base = 16; | |
449 | ptr += 2; | |
450 | } else if (isascii (ptr [1]) && isdigit (ptr [1])) { | |
451 | base = 8; | |
452 | ptr += 1; | |
453 | } else { | |
454 | base = 10; | |
455 | } | |
456 | } else { | |
457 | base = 10; | |
458 | } | |
459 | } | |
460 | ||
461 | do { | |
462 | tval = *ptr++; | |
463 | /* XXX assumes ASCII... */ | |
464 | if (tval >= 'a') | |
465 | tval = tval - 'a' + 10; | |
466 | else if (tval >= 'A') | |
467 | tval = tval - 'A' + 10; | |
468 | else if (tval >= '0') | |
469 | tval -= '0'; | |
470 | else { | |
4615d498 | 471 | parse_warn (cfile, "Bogus number: %s.", str); |
63115431 TL |
472 | break; |
473 | } | |
474 | if (tval >= base) { | |
4615d498 TL |
475 | parse_warn (cfile, |
476 | "Bogus number %s: digit %d not in base %d", | |
f420e08c | 477 | str, tval, base); |
63115431 TL |
478 | break; |
479 | } | |
480 | val = val * base + tval; | |
481 | } while (*ptr); | |
482 | ||
483 | if (negative) | |
484 | max = (1 << (size - 1)); | |
485 | else | |
486 | max = (1 << (size - 1)) + ((1 << (size - 1)) - 1); | |
487 | if (val > max) { | |
488 | switch (base) { | |
489 | case 8: | |
4615d498 | 490 | parse_warn (cfile, |
06afba54 | 491 | "%s%lo exceeds max (%d) for precision.", |
b3d594dd TL |
492 | negative ? "-" : "", |
493 | (unsigned long)val, max); | |
63115431 TL |
494 | break; |
495 | case 16: | |
4615d498 | 496 | parse_warn (cfile, |
06afba54 | 497 | "%s%lx exceeds max (%d) for precision.", |
b3d594dd TL |
498 | negative ? "-" : "", |
499 | (unsigned long)val, max); | |
63115431 TL |
500 | break; |
501 | default: | |
4615d498 | 502 | parse_warn (cfile, |
06afba54 | 503 | "%s%lu exceeds max (%d) for precision.", |
b3d594dd TL |
504 | negative ? "-" : "", |
505 | (unsigned long)val, max); | |
63115431 TL |
506 | break; |
507 | } | |
508 | } | |
509 | ||
510 | if (negative) { | |
511 | switch (size) { | |
512 | case 8: | |
513 | *buf = -(unsigned long)val; | |
514 | break; | |
515 | case 16: | |
b1b7b521 | 516 | putShort (buf, -(long)val); |
63115431 TL |
517 | break; |
518 | case 32: | |
b1b7b521 | 519 | putLong (buf, -(long)val); |
63115431 TL |
520 | break; |
521 | default: | |
4615d498 TL |
522 | parse_warn (cfile, |
523 | "Unexpected integer size: %d\n", size); | |
63115431 TL |
524 | break; |
525 | } | |
526 | } else { | |
527 | switch (size) { | |
528 | case 8: | |
529 | *buf = (u_int8_t)val; | |
530 | break; | |
531 | case 16: | |
532 | putUShort (buf, (u_int16_t)val); | |
533 | break; | |
534 | case 32: | |
535 | putULong (buf, val); | |
536 | break; | |
537 | default: | |
4615d498 TL |
538 | parse_warn (cfile, |
539 | "Unexpected integer size: %d\n", size); | |
63115431 TL |
540 | break; |
541 | } | |
542 | } | |
543 | } | |
544 | ||
be6be08d TL |
545 | /* |
546 | * date :== NUMBER NUMBER SLASH NUMBER SLASH NUMBER | |
a82abfc7 TL |
547 | * NUMBER COLON NUMBER COLON NUMBER SEMI | |
548 | * NUMBER NUMBER SLASH NUMBER SLASH NUMBER | |
549 | * NUMBER COLON NUMBER COLON NUMBER NUMBER SEMI | | |
be1ee858 | 550 | * NEVER |
be6be08d | 551 | * |
a82abfc7 TL |
552 | * Dates are stored in GMT or with a timezone offset; first number is day |
553 | * of week; next is year/month/day; next is hours:minutes:seconds on a | |
554 | * 24-hour clock, followed by the timezone offset in seconds, which is | |
555 | * optional. | |
be6be08d | 556 | */ |
63115431 TL |
557 | |
558 | TIME parse_date (cfile) | |
4615d498 | 559 | struct parse *cfile; |
63115431 TL |
560 | { |
561 | struct tm tm; | |
562 | int guess; | |
a82abfc7 | 563 | int tzoff, wday, year, mon, mday, hour, min, sec; |
b1b7b521 | 564 | const char *val; |
02a015fb | 565 | enum dhcp_token token; |
63115431 TL |
566 | static int months [11] = { 31, 59, 90, 120, 151, 181, |
567 | 212, 243, 273, 304, 334 }; | |
568 | ||
be1ee858 | 569 | /* Day of week, or "never"... */ |
63115431 | 570 | token = next_token (&val, cfile); |
be1ee858 TL |
571 | if (token == NEVER) { |
572 | if (!parse_semi (cfile)) | |
573 | return 0; | |
574 | return MAX_TIME; | |
575 | } | |
576 | ||
63115431 | 577 | if (token != NUMBER) { |
4615d498 | 578 | parse_warn (cfile, "numeric day of week expected."); |
63115431 TL |
579 | if (token != SEMI) |
580 | skip_to_semi (cfile); | |
581 | return (TIME)0; | |
582 | } | |
a82abfc7 | 583 | wday = atoi (val); |
63115431 TL |
584 | |
585 | /* Year... */ | |
586 | token = next_token (&val, cfile); | |
587 | if (token != NUMBER) { | |
4615d498 | 588 | parse_warn (cfile, "numeric year expected."); |
63115431 TL |
589 | if (token != SEMI) |
590 | skip_to_semi (cfile); | |
591 | return (TIME)0; | |
592 | } | |
edca2b1a TL |
593 | |
594 | /* Note: the following is not a Y2K bug - it's a Y1.9K bug. Until | |
595 | somebody invents a time machine, I think we can safely disregard | |
596 | it. This actually works around a stupid Y2K bug that was present | |
597 | in a very early beta release of dhcpd. */ | |
a82abfc7 TL |
598 | year = atoi (val); |
599 | if (year > 1900) | |
600 | year -= 1900; | |
63115431 TL |
601 | |
602 | /* Slash seperating year from month... */ | |
603 | token = next_token (&val, cfile); | |
604 | if (token != SLASH) { | |
4615d498 TL |
605 | parse_warn (cfile, |
606 | "expected slash seperating year from month."); | |
63115431 TL |
607 | if (token != SEMI) |
608 | skip_to_semi (cfile); | |
609 | return (TIME)0; | |
610 | } | |
611 | ||
612 | /* Month... */ | |
613 | token = next_token (&val, cfile); | |
614 | if (token != NUMBER) { | |
4615d498 | 615 | parse_warn (cfile, "numeric month expected."); |
63115431 TL |
616 | if (token != SEMI) |
617 | skip_to_semi (cfile); | |
618 | return (TIME)0; | |
619 | } | |
a82abfc7 | 620 | mon = atoi (val) - 1; |
63115431 TL |
621 | |
622 | /* Slash seperating month from day... */ | |
623 | token = next_token (&val, cfile); | |
624 | if (token != SLASH) { | |
4615d498 TL |
625 | parse_warn (cfile, |
626 | "expected slash seperating month from day."); | |
63115431 TL |
627 | if (token != SEMI) |
628 | skip_to_semi (cfile); | |
629 | return (TIME)0; | |
630 | } | |
631 | ||
632 | /* Month... */ | |
633 | token = next_token (&val, cfile); | |
634 | if (token != NUMBER) { | |
4615d498 | 635 | parse_warn (cfile, "numeric day of month expected."); |
63115431 TL |
636 | if (token != SEMI) |
637 | skip_to_semi (cfile); | |
638 | return (TIME)0; | |
639 | } | |
a82abfc7 | 640 | mday = atoi (val); |
63115431 TL |
641 | |
642 | /* Hour... */ | |
643 | token = next_token (&val, cfile); | |
644 | if (token != NUMBER) { | |
4615d498 | 645 | parse_warn (cfile, "numeric hour expected."); |
63115431 TL |
646 | if (token != SEMI) |
647 | skip_to_semi (cfile); | |
648 | return (TIME)0; | |
649 | } | |
a82abfc7 | 650 | hour = atoi (val); |
63115431 TL |
651 | |
652 | /* Colon seperating hour from minute... */ | |
653 | token = next_token (&val, cfile); | |
654 | if (token != COLON) { | |
4615d498 TL |
655 | parse_warn (cfile, |
656 | "expected colon seperating hour from minute."); | |
63115431 TL |
657 | if (token != SEMI) |
658 | skip_to_semi (cfile); | |
659 | return (TIME)0; | |
660 | } | |
661 | ||
662 | /* Minute... */ | |
663 | token = next_token (&val, cfile); | |
664 | if (token != NUMBER) { | |
4615d498 | 665 | parse_warn (cfile, "numeric minute expected."); |
63115431 TL |
666 | if (token != SEMI) |
667 | skip_to_semi (cfile); | |
668 | return (TIME)0; | |
669 | } | |
a82abfc7 | 670 | min = atoi (val); |
63115431 TL |
671 | |
672 | /* Colon seperating minute from second... */ | |
673 | token = next_token (&val, cfile); | |
674 | if (token != COLON) { | |
4615d498 TL |
675 | parse_warn (cfile, |
676 | "expected colon seperating hour from minute."); | |
63115431 TL |
677 | if (token != SEMI) |
678 | skip_to_semi (cfile); | |
679 | return (TIME)0; | |
680 | } | |
681 | ||
682 | /* Minute... */ | |
683 | token = next_token (&val, cfile); | |
684 | if (token != NUMBER) { | |
4615d498 | 685 | parse_warn (cfile, "numeric minute expected."); |
63115431 TL |
686 | if (token != SEMI) |
687 | skip_to_semi (cfile); | |
688 | return (TIME)0; | |
689 | } | |
a82abfc7 | 690 | sec = atoi (val); |
63115431 | 691 | |
a82abfc7 TL |
692 | token = peek_token (&val, cfile); |
693 | if (token == NUMBER) { | |
694 | token = next_token (&val, cfile); | |
695 | tzoff = atoi (val); | |
696 | } else | |
697 | tzoff = 0; | |
63115431 TL |
698 | |
699 | /* Make sure the date ends in a semicolon... */ | |
25541f2f | 700 | if (!parse_semi (cfile)) |
63115431 | 701 | return 0; |
63115431 TL |
702 | |
703 | /* Guess the time value... */ | |
a82abfc7 TL |
704 | guess = ((((((365 * (year - 70) + /* Days in years since '70 */ |
705 | (year - 69) / 4 + /* Leap days since '70 */ | |
706 | (mon /* Days in months this year */ | |
707 | ? months [mon - 1] | |
63115431 | 708 | : 0) + |
a82abfc7 TL |
709 | (mon > 1 && /* Leap day this year */ |
710 | !((year - 72) & 3)) + | |
711 | mday - 1) * 24) + /* Day of month */ | |
712 | hour) * 60) + | |
713 | min) * 60) + sec + tzoff; | |
63115431 TL |
714 | |
715 | /* This guess could be wrong because of leap seconds or other | |
716 | weirdness we don't know about that the system does. For | |
717 | now, we're just going to accept the guess, but at some point | |
718 | it might be nice to do a successive approximation here to | |
719 | get an exact value. Even if the error is small, if the | |
720 | server is restarted frequently (and thus the lease database | |
721 | is reread), the error could accumulate into something | |
722 | significant. */ | |
723 | ||
724 | return guess; | |
725 | } | |
4761e04b | 726 | |
be6be08d TL |
727 | /* |
728 | * option-name :== IDENTIFIER | | |
729 | IDENTIFIER . IDENTIFIER | |
730 | */ | |
731 | ||
b1b7b521 | 732 | struct option *parse_option_name (cfile, allocate, known) |
4615d498 | 733 | struct parse *cfile; |
6b4b0ec7 | 734 | int allocate; |
b1b7b521 | 735 | int *known; |
4761e04b | 736 | { |
b1b7b521 | 737 | const char *val; |
02a015fb | 738 | enum dhcp_token token; |
6b4b0ec7 | 739 | char *uname; |
4761e04b TL |
740 | struct universe *universe; |
741 | struct option *option; | |
742 | ||
743 | token = next_token (&val, cfile); | |
744 | if (!is_identifier (token)) { | |
4615d498 TL |
745 | parse_warn (cfile, |
746 | "expecting identifier after option keyword."); | |
4761e04b TL |
747 | if (token != SEMI) |
748 | skip_to_semi (cfile); | |
749 | return (struct option *)0; | |
750 | } | |
fdac15d9 | 751 | uname = dmalloc (strlen (val) + 1, MDL); |
6b4b0ec7 TL |
752 | if (!uname) |
753 | log_fatal ("no memory for uname information."); | |
754 | strcpy (uname, val); | |
4761e04b TL |
755 | token = peek_token (&val, cfile); |
756 | if (token == DOT) { | |
757 | /* Go ahead and take the DOT token... */ | |
758 | token = next_token (&val, cfile); | |
759 | ||
760 | /* The next token should be an identifier... */ | |
761 | token = next_token (&val, cfile); | |
762 | if (!is_identifier (token)) { | |
4615d498 | 763 | parse_warn (cfile, "expecting identifier after '.'"); |
4761e04b TL |
764 | if (token != SEMI) |
765 | skip_to_semi (cfile); | |
766 | return (struct option *)0; | |
767 | } | |
768 | ||
769 | /* Look up the option name hash table for the specified | |
6b4b0ec7 | 770 | uname. */ |
4761e04b TL |
771 | universe = ((struct universe *) |
772 | hash_lookup (&universe_hash, | |
6b4b0ec7 | 773 | (unsigned char *)uname, 0)); |
4761e04b TL |
774 | /* If it's not there, we can't parse the rest of the |
775 | declaration. */ | |
776 | if (!universe) { | |
4615d498 | 777 | parse_warn (cfile, "no option space named %s.", uname); |
4761e04b TL |
778 | skip_to_semi (cfile); |
779 | return (struct option *)0; | |
780 | } | |
781 | } else { | |
782 | /* Use the default hash table, which contains all the | |
783 | standard dhcp option names. */ | |
6b4b0ec7 | 784 | val = uname; |
4761e04b TL |
785 | universe = &dhcp_universe; |
786 | } | |
787 | ||
788 | /* Look up the actual option info... */ | |
789 | option = (struct option *)hash_lookup (universe -> hash, | |
b1b7b521 | 790 | (const unsigned char *)val, 0); |
4761e04b TL |
791 | |
792 | /* If we didn't get an option structure, it's an undefined option. */ | |
b1b7b521 TL |
793 | if (option) { |
794 | *known = 1; | |
795 | } else { | |
6b4b0ec7 TL |
796 | /* If we've been told to allocate, that means that this |
797 | (might) be an option code definition, so we'll create | |
798 | an option structure just in case. */ | |
799 | if (allocate) { | |
4bd8800e | 800 | option = new_option (MDL); |
6b4b0ec7 TL |
801 | if (val == uname) |
802 | option -> name = val; | |
803 | else { | |
b1b7b521 | 804 | char *s; |
fdac15d9 TL |
805 | dfree (uname, MDL); |
806 | s = dmalloc (strlen (val) + 1, MDL); | |
b1b7b521 | 807 | if (!s) |
4615d498 TL |
808 | log_fatal ("no memory for option %s.%s", |
809 | universe -> name, val); | |
b1b7b521 TL |
810 | strcpy (s, val); |
811 | option -> name = s; | |
6b4b0ec7 TL |
812 | } |
813 | option -> universe = universe; | |
b1b7b521 | 814 | option -> code = 0; |
6b4b0ec7 TL |
815 | return option; |
816 | } | |
817 | if (val == uname) | |
4615d498 | 818 | parse_warn (cfile, "no option named %s", val); |
4761e04b | 819 | else |
4615d498 | 820 | parse_warn (cfile, "no option named %s in space %s", |
6b4b0ec7 | 821 | val, uname); |
4761e04b TL |
822 | skip_to_semi (cfile); |
823 | return (struct option *)0; | |
824 | } | |
825 | ||
826 | /* Free the initial identifier token. */ | |
fdac15d9 | 827 | dfree (uname, MDL); |
4761e04b TL |
828 | return option; |
829 | } | |
830 | ||
52c9d530 TL |
831 | /* IDENTIFIER SEMI */ |
832 | ||
833 | void parse_option_space_decl (cfile) | |
4615d498 | 834 | struct parse *cfile; |
52c9d530 TL |
835 | { |
836 | int token; | |
b1b7b521 | 837 | const char *val; |
52c9d530 | 838 | struct universe **ua, *nu; |
b1b7b521 | 839 | char *s; |
52c9d530 TL |
840 | |
841 | next_token (&val, cfile); /* Discard the SPACE token, which was | |
842 | checked by the caller. */ | |
843 | token = next_token (&val, cfile); | |
844 | if (!is_identifier (token)) { | |
4615d498 | 845 | parse_warn (cfile, "expecting identifier."); |
52c9d530 TL |
846 | skip_to_semi (cfile); |
847 | return; | |
848 | } | |
4bd8800e | 849 | nu = new_universe (MDL); |
52c9d530 TL |
850 | if (!nu) |
851 | log_fatal ("No memory for new option space."); | |
852 | ||
853 | /* Set up the server option universe... */ | |
fdac15d9 | 854 | s = dmalloc (strlen (val) + 1, MDL); |
b1b7b521 | 855 | if (!s) |
52c9d530 | 856 | log_fatal ("No memory for new option space name."); |
b1b7b521 TL |
857 | strcpy (s, val); |
858 | nu -> name = s; | |
52c9d530 TL |
859 | nu -> lookup_func = lookup_hashed_option; |
860 | nu -> option_state_dereference = | |
861 | hashed_option_state_dereference; | |
862 | nu -> get_func = hashed_option_get; | |
863 | nu -> set_func = hashed_option_set; | |
864 | nu -> save_func = save_hashed_option; | |
865 | nu -> delete_func = delete_hashed_option; | |
866 | nu -> encapsulate = hashed_option_space_encapsulate; | |
867 | nu -> length_size = 1; | |
868 | nu -> tag_size = 1; | |
869 | nu -> store_tag = putUChar; | |
870 | nu -> store_length = putUChar; | |
871 | nu -> index = universe_count++; | |
872 | if (nu -> index >= universe_max) { | |
fdac15d9 | 873 | ua = dmalloc (universe_max * 2 * sizeof *ua, MDL); |
52c9d530 TL |
874 | if (!ua) |
875 | log_fatal ("No memory to expand option space array."); | |
876 | memcpy (ua, universes, universe_max * sizeof *ua); | |
877 | universe_max *= 2; | |
fdac15d9 | 878 | dfree (universes, MDL); |
52c9d530 TL |
879 | universes = ua; |
880 | } | |
881 | universes [nu -> index] = nu; | |
882 | nu -> hash = new_hash (); | |
883 | if (!nu -> hash) | |
884 | log_fatal ("Can't allocate %s option hash table.", nu -> name); | |
885 | add_hash (&universe_hash, | |
b1b7b521 | 886 | (const unsigned char *)nu -> name, 0, (unsigned char *)nu); |
52c9d530 TL |
887 | parse_semi (cfile); |
888 | } | |
889 | ||
6b4b0ec7 TL |
890 | /* This is faked up to look good right now. Ideally, this should do a |
891 | recursive parse and allow arbitrary data structure definitions, but for | |
892 | now it just allows you to specify a single type, an array of single types, | |
893 | a sequence of types, or an array of sequences of types. | |
894 | ||
895 | ocd :== NUMBER EQUALS ocsd SEMI | |
896 | ||
897 | ocsd :== ocsd_type | | |
898 | ocsd_type_sequence | | |
899 | ARRAY OF ocsd_type | | |
900 | ARRAY OF ocsd_type_sequence | |
901 | ||
902 | ocsd_type :== BOOLEAN | | |
903 | INTEGER NUMBER | | |
904 | SIGNED INTEGER NUMBER | | |
905 | UNSIGNED INTEGER NUMBER | | |
906 | IP-ADDRESS | | |
907 | TEXT | | |
908 | STRING | |
909 | ||
910 | ocsd_type_sequence :== LBRACE ocsd_types RBRACE | |
911 | ||
912 | ocsd_type :== ocsd_type | | |
913 | ocsd_types ocsd_type */ | |
914 | ||
915 | int parse_option_code_definition (cfile, option) | |
4615d498 | 916 | struct parse *cfile; |
6b4b0ec7 TL |
917 | struct option *option; |
918 | { | |
b1b7b521 | 919 | const char *val; |
6b4b0ec7 | 920 | enum dhcp_token token; |
b1b7b521 | 921 | unsigned arrayp = 0; |
6b4b0ec7 TL |
922 | int recordp = 0; |
923 | int no_more_in_record = 0; | |
924 | char tokbuf [128]; | |
b1b7b521 | 925 | unsigned tokix = 0; |
6b4b0ec7 TL |
926 | char type; |
927 | int code; | |
928 | int is_signed; | |
b1b7b521 | 929 | char *s; |
6b4b0ec7 TL |
930 | |
931 | /* Parse the option code. */ | |
932 | token = next_token (&val, cfile); | |
933 | if (token != NUMBER) { | |
4615d498 | 934 | parse_warn (cfile, "expecting option code number."); |
6b4b0ec7 TL |
935 | skip_to_semi (cfile); |
936 | return 0; | |
937 | } | |
938 | option -> code = atoi (val); | |
939 | ||
940 | token = next_token (&val, cfile); | |
941 | if (token != EQUAL) { | |
4615d498 | 942 | parse_warn (cfile, "expecting \"=\""); |
6b4b0ec7 TL |
943 | skip_to_semi (cfile); |
944 | return 0; | |
945 | } | |
946 | ||
947 | /* See if this is an array. */ | |
948 | token = next_token (&val, cfile); | |
949 | if (token == ARRAY) { | |
950 | token = next_token (&val, cfile); | |
951 | if (token != OF) { | |
4615d498 | 952 | parse_warn (cfile, "expecting \"of\"."); |
6b4b0ec7 TL |
953 | skip_to_semi (cfile); |
954 | return 0; | |
955 | } | |
956 | arrayp = 1; | |
957 | token = next_token (&val, cfile); | |
958 | } | |
959 | ||
960 | if (token == LBRACE) { | |
961 | recordp = 1; | |
962 | token = next_token (&val, cfile); | |
963 | } | |
964 | ||
965 | /* At this point we're expecting a data type. */ | |
966 | next_type: | |
967 | switch (token) { | |
968 | case BOOLEAN: | |
969 | type = 'f'; | |
970 | break; | |
971 | case INTEGER: | |
972 | is_signed = 1; | |
973 | parse_integer: | |
974 | token = next_token (&val, cfile); | |
975 | if (token != NUMBER) { | |
4615d498 | 976 | parse_warn (cfile, "expecting number."); |
6b4b0ec7 TL |
977 | skip_to_rbrace (cfile, recordp); |
978 | if (recordp) | |
979 | skip_to_semi (cfile); | |
980 | return 0; | |
981 | } | |
982 | switch (atoi (val)) { | |
983 | case 8: | |
984 | type = is_signed ? 'b' : 'B'; | |
985 | break; | |
986 | case 16: | |
987 | type = is_signed ? 's' : 'S'; | |
988 | break; | |
989 | case 32: | |
990 | type = is_signed ? 'l' : 'L'; | |
991 | break; | |
992 | default: | |
4615d498 TL |
993 | parse_warn (cfile, |
994 | "%s bit precision is not supported.", val); | |
6b4b0ec7 TL |
995 | skip_to_rbrace (cfile, recordp); |
996 | if (recordp) | |
997 | skip_to_semi (cfile); | |
998 | return 0; | |
999 | } | |
1000 | break; | |
1001 | case SIGNED: | |
1002 | is_signed = 1; | |
1003 | parse_signed: | |
1004 | token = next_token (&val, cfile); | |
1005 | if (token != INTEGER) { | |
4615d498 | 1006 | parse_warn (cfile, "expecting \"integer\" keyword."); |
6b4b0ec7 TL |
1007 | skip_to_rbrace (cfile, recordp); |
1008 | if (recordp) | |
1009 | skip_to_semi (cfile); | |
1010 | return 0; | |
1011 | } | |
1012 | goto parse_integer; | |
1013 | case UNSIGNED: | |
1014 | is_signed = 0; | |
1015 | goto parse_signed; | |
1016 | ||
1017 | case IP_ADDRESS: | |
1018 | type = 'I'; | |
1019 | break; | |
1020 | case TEXT: | |
1021 | type = 't'; | |
1022 | no_arrays: | |
1023 | if (arrayp) { | |
4615d498 | 1024 | parse_warn (cfile, "arrays of text strings not %s", |
6b4b0ec7 TL |
1025 | "yet supported."); |
1026 | skip_to_rbrace (cfile, recordp); | |
1027 | if (recordp) | |
1028 | skip_to_semi (cfile); | |
1029 | return 0; | |
1030 | } | |
1031 | no_more_in_record = 1; | |
1032 | break; | |
1033 | case STRING: | |
1034 | type = 'X'; | |
1035 | goto no_arrays; | |
1036 | ||
1037 | default: | |
4615d498 | 1038 | parse_warn (cfile, "unknown data type %s", val); |
6b4b0ec7 TL |
1039 | skip_to_rbrace (cfile, recordp); |
1040 | if (recordp) | |
1041 | skip_to_semi (cfile); | |
1042 | return 0; | |
1043 | } | |
1044 | ||
1045 | if (tokix == sizeof tokbuf) { | |
4615d498 | 1046 | parse_warn (cfile, "too many types in record."); |
6b4b0ec7 TL |
1047 | skip_to_rbrace (cfile, recordp); |
1048 | if (recordp) | |
1049 | skip_to_semi (cfile); | |
1050 | return 0; | |
1051 | } | |
1052 | tokbuf [tokix++] = type; | |
1053 | ||
1054 | if (recordp) { | |
1055 | token = next_token (&val, cfile); | |
1056 | if (token == COMMA) { | |
1057 | if (no_more_in_record) { | |
4615d498 TL |
1058 | parse_warn (cfile, |
1059 | "%s must be at end of record.", | |
6b4b0ec7 TL |
1060 | type == 't' ? "text" : "string"); |
1061 | skip_to_rbrace (cfile, 1); | |
1062 | if (recordp) | |
1063 | skip_to_semi (cfile); | |
1064 | return 0; | |
1065 | } | |
1066 | token = next_token (&val, cfile); | |
1067 | goto next_type; | |
1068 | } | |
1069 | if (token != RBRACE) { | |
4615d498 | 1070 | parse_warn (cfile, "expecting right brace."); |
6b4b0ec7 TL |
1071 | skip_to_rbrace (cfile, 1); |
1072 | if (recordp) | |
1073 | skip_to_semi (cfile); | |
1074 | return 0; | |
1075 | } | |
1076 | } | |
1077 | if (!parse_semi (cfile)) { | |
4615d498 | 1078 | parse_warn (cfile, "semicolon expected."); |
6b4b0ec7 TL |
1079 | skip_to_semi (cfile); |
1080 | if (recordp) | |
1081 | skip_to_semi (cfile); | |
1082 | return 0; | |
1083 | } | |
fdac15d9 | 1084 | s = dmalloc (tokix + arrayp + 1, MDL); |
b1b7b521 | 1085 | if (!s) |
6b4b0ec7 | 1086 | log_fatal ("no memory for option format."); |
b1b7b521 | 1087 | memcpy (s, tokbuf, tokix); |
6b4b0ec7 | 1088 | if (arrayp) |
b1b7b521 TL |
1089 | s [tokix++] = 'A'; |
1090 | s [tokix] = 0; | |
1091 | option -> format = s; | |
6b4b0ec7 TL |
1092 | if (option -> universe -> options [option -> code]) { |
1093 | /* XXX Free the option, but we can't do that now because they | |
1094 | XXX may start out static. */ | |
1095 | } | |
1096 | option -> universe -> options [option -> code] = option; | |
1097 | add_hash (option -> universe -> hash, | |
b1b7b521 TL |
1098 | (const unsigned char *)option -> name, |
1099 | 0, (unsigned char *)option); | |
6b4b0ec7 TL |
1100 | return 1; |
1101 | } | |
1102 | ||
be6be08d TL |
1103 | /* |
1104 | * colon-seperated-hex-list :== NUMBER | | |
1105 | * NUMBER COLON colon-seperated-hex-list | |
1106 | */ | |
1107 | ||
02a015fb TL |
1108 | int parse_cshl (data, cfile) |
1109 | struct data_string *data; | |
4615d498 | 1110 | struct parse *cfile; |
4761e04b | 1111 | { |
c5b0f529 | 1112 | u_int8_t ibuf [128]; |
b1b7b521 TL |
1113 | unsigned ilen = 0; |
1114 | unsigned tlen = 0; | |
4761e04b TL |
1115 | struct option_tag *sl = (struct option_tag *)0; |
1116 | struct option_tag *next, **last = &sl; | |
02a015fb | 1117 | enum dhcp_token token; |
b1b7b521 | 1118 | const char *val; |
02a015fb | 1119 | unsigned char *rvp; |
4761e04b TL |
1120 | |
1121 | do { | |
1122 | token = next_token (&val, cfile); | |
1123 | if (token != NUMBER && token != NUMBER_OR_NAME) { | |
4615d498 | 1124 | parse_warn (cfile, "expecting hexadecimal number."); |
4761e04b TL |
1125 | skip_to_semi (cfile); |
1126 | for (; sl; sl = next) { | |
1127 | next = sl -> next; | |
fdac15d9 | 1128 | dfree (sl, MDL); |
4761e04b | 1129 | } |
02a015fb | 1130 | return 0; |
4761e04b TL |
1131 | } |
1132 | if (ilen == sizeof ibuf) { | |
1133 | next = (struct option_tag *) | |
1134 | dmalloc (ilen - 1 + | |
fdac15d9 | 1135 | sizeof (struct option_tag), MDL); |
4761e04b | 1136 | if (!next) |
8ae2d595 | 1137 | log_fatal ("no memory for string list."); |
4761e04b TL |
1138 | memcpy (next -> data, ibuf, ilen); |
1139 | *last = next; | |
1140 | last = &next -> next; | |
1141 | tlen += ilen; | |
1142 | ilen = 0; | |
1143 | } | |
4615d498 | 1144 | convert_num (cfile, &ibuf [ilen++], val, 16, 8); |
4761e04b TL |
1145 | |
1146 | token = peek_token (&val, cfile); | |
1147 | if (token != COLON) | |
1148 | break; | |
1149 | token = next_token (&val, cfile); | |
1150 | } while (1); | |
1151 | ||
4bd8800e | 1152 | if (!buffer_allocate (&data -> buffer, tlen + ilen, MDL)) |
8ae2d595 | 1153 | log_fatal ("no memory to store octet data."); |
02a015fb TL |
1154 | data -> data = &data -> buffer -> data [0]; |
1155 | data -> len = tlen + ilen; | |
1156 | data -> terminated = 0; | |
1157 | ||
b1b7b521 | 1158 | rvp = &data -> buffer -> data [0]; |
4761e04b TL |
1159 | while (sl) { |
1160 | next = sl -> next; | |
1161 | memcpy (rvp, sl -> data, sizeof ibuf); | |
1162 | rvp += sizeof ibuf; | |
fdac15d9 | 1163 | dfree (sl, MDL); |
4761e04b TL |
1164 | sl = next; |
1165 | } | |
1166 | ||
1167 | memcpy (rvp, ibuf, ilen); | |
02a015fb | 1168 | return 1; |
4761e04b | 1169 | } |
be6be08d TL |
1170 | |
1171 | /* | |
1172 | * executable-statements :== executable-statement executable-statements | | |
1173 | * executable-statement | |
1174 | * | |
1175 | * executable-statement :== | |
1176 | * IF if-statement | | |
1177 | * ADD class-name SEMI | | |
1178 | * BREAK SEMI | | |
1179 | * OPTION option-parameter SEMI | | |
1180 | * SUPERSEDE option-parameter SEMI | | |
1181 | * PREPEND option-parameter SEMI | | |
1182 | * APPEND option-parameter SEMI | |
1183 | */ | |
1184 | ||
f579f39f | 1185 | int parse_executable_statements (statements, cfile, lose, case_context) |
79a65726 | 1186 | struct executable_statement **statements; |
4615d498 | 1187 | struct parse *cfile; |
be6be08d | 1188 | int *lose; |
f579f39f | 1189 | enum expression_context case_context; |
be6be08d | 1190 | { |
79a65726 | 1191 | struct executable_statement **next; |
be6be08d | 1192 | |
79a65726 | 1193 | next = statements; |
f579f39f | 1194 | while (parse_executable_statement (next, cfile, lose, case_context)) |
be6be08d | 1195 | next = &((*next) -> next); |
02a015fb | 1196 | if (!*lose) |
79a65726 TL |
1197 | return 1; |
1198 | return 0; | |
be6be08d TL |
1199 | } |
1200 | ||
f579f39f | 1201 | int parse_executable_statement (result, cfile, lose, case_context) |
79a65726 | 1202 | struct executable_statement **result; |
4615d498 | 1203 | struct parse *cfile; |
be6be08d | 1204 | int *lose; |
f579f39f | 1205 | enum expression_context case_context; |
be6be08d | 1206 | { |
02a015fb | 1207 | enum dhcp_token token; |
b1b7b521 | 1208 | const char *val; |
79a65726 | 1209 | struct executable_statement base; |
be6be08d TL |
1210 | struct class *cta; |
1211 | struct option *option; | |
b1013db7 | 1212 | struct option_cache *cache; |
b1b7b521 | 1213 | int known; |
0776fd12 | 1214 | int flag; |
be6be08d | 1215 | |
b1013db7 TL |
1216 | token = peek_token (&val, cfile); |
1217 | switch (token) { | |
be6be08d | 1218 | case IF: |
dce70f9f | 1219 | next_token (&val, cfile); |
79a65726 TL |
1220 | return parse_if_statement (result, cfile, lose); |
1221 | ||
eb018e2b | 1222 | case TOKEN_ADD: |
efc79acb | 1223 | token = next_token (&val, cfile); |
be6be08d TL |
1224 | token = next_token (&val, cfile); |
1225 | if (token != STRING) { | |
4615d498 | 1226 | parse_warn (cfile, "expecting class name."); |
be6be08d TL |
1227 | skip_to_semi (cfile); |
1228 | *lose = 1; | |
79a65726 | 1229 | return 0; |
be6be08d TL |
1230 | } |
1231 | cta = find_class (val); | |
1232 | if (!cta) { | |
4615d498 | 1233 | parse_warn (cfile, "unknown class %s.", val); |
be6be08d TL |
1234 | skip_to_semi (cfile); |
1235 | *lose = 1; | |
79a65726 | 1236 | return 0; |
be6be08d TL |
1237 | } |
1238 | if (!parse_semi (cfile)) { | |
1239 | *lose = 1; | |
79a65726 | 1240 | return 0; |
be6be08d | 1241 | } |
4bd8800e | 1242 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
1243 | log_fatal ("no memory for new statement."); |
1244 | (*result) -> op = add_statement; | |
1245 | (*result) -> data.add = cta; | |
be6be08d TL |
1246 | break; |
1247 | ||
1248 | case BREAK: | |
1249 | token = next_token (&val, cfile); | |
1250 | if (!parse_semi (cfile)) { | |
1251 | *lose = 1; | |
79a65726 | 1252 | return 0; |
be6be08d | 1253 | } |
4bd8800e | 1254 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
1255 | log_fatal ("no memory for new statement."); |
1256 | (*result) -> op = break_statement; | |
be6be08d TL |
1257 | break; |
1258 | ||
25541f2f TL |
1259 | case SEND: |
1260 | *lose = 1; | |
4615d498 | 1261 | parse_warn (cfile, "send not appropriate here."); |
25541f2f | 1262 | skip_to_semi (cfile); |
79a65726 | 1263 | return 0; |
25541f2f TL |
1264 | |
1265 | case SUPERSEDE: | |
be6be08d TL |
1266 | case OPTION: |
1267 | token = next_token (&val, cfile); | |
b1b7b521 TL |
1268 | known = 0; |
1269 | option = parse_option_name (cfile, 0, &known); | |
be6be08d TL |
1270 | if (!option) { |
1271 | *lose = 1; | |
79a65726 | 1272 | return 0; |
be6be08d | 1273 | } |
79a65726 | 1274 | return parse_option_statement (result, cfile, 1, option, |
be6be08d TL |
1275 | supersede_option_statement); |
1276 | ||
b1013db7 | 1277 | case ALLOW: |
0776fd12 TL |
1278 | flag = 1; |
1279 | goto pad; | |
b1013db7 | 1280 | case DENY: |
0776fd12 TL |
1281 | flag = 0; |
1282 | goto pad; | |
1283 | case IGNORE: | |
1284 | flag = 2; | |
1285 | pad: | |
b1013db7 TL |
1286 | token = next_token (&val, cfile); |
1287 | cache = (struct option_cache *)0; | |
2db25842 | 1288 | if (!parse_allow_deny (&cache, cfile, flag)) |
79a65726 | 1289 | return 0; |
4bd8800e | 1290 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
1291 | log_fatal ("no memory for new statement."); |
1292 | (*result) -> op = supersede_option_statement; | |
1293 | (*result) -> data.option = cache; | |
b1013db7 TL |
1294 | break; |
1295 | ||
be6be08d TL |
1296 | case DEFAULT: |
1297 | token = next_token (&val, cfile); | |
f579f39f TL |
1298 | token = peek_token (&val, cfile); |
1299 | if (token == COLON) | |
1300 | goto switch_default; | |
b1b7b521 TL |
1301 | known = 0; |
1302 | option = parse_option_name (cfile, 0, &known); | |
be6be08d TL |
1303 | if (!option) { |
1304 | *lose = 1; | |
79a65726 | 1305 | return 0; |
be6be08d | 1306 | } |
79a65726 | 1307 | return parse_option_statement (result, cfile, 1, option, |
be6be08d TL |
1308 | default_option_statement); |
1309 | ||
1310 | case PREPEND: | |
1311 | token = next_token (&val, cfile); | |
b1b7b521 TL |
1312 | known = 0; |
1313 | option = parse_option_name (cfile, 0, &known); | |
be6be08d TL |
1314 | if (!option) { |
1315 | *lose = 1; | |
79a65726 | 1316 | return 0; |
be6be08d | 1317 | } |
79a65726 | 1318 | return parse_option_statement (result, cfile, 1, option, |
be6be08d TL |
1319 | prepend_option_statement); |
1320 | ||
1321 | case APPEND: | |
1322 | token = next_token (&val, cfile); | |
b1b7b521 TL |
1323 | known = 0; |
1324 | option = parse_option_name (cfile, 0, &known); | |
be6be08d TL |
1325 | if (!option) { |
1326 | *lose = 1; | |
79a65726 | 1327 | return 0; |
be6be08d | 1328 | } |
79a65726 | 1329 | return parse_option_statement (result, cfile, 1, option, |
be6be08d TL |
1330 | append_option_statement); |
1331 | ||
79a65726 TL |
1332 | case ON: |
1333 | token = next_token (&val, cfile); | |
79a65726 TL |
1334 | return parse_on_statement (result, cfile, lose); |
1335 | ||
f579f39f TL |
1336 | case SWITCH: |
1337 | token = next_token (&val, cfile); | |
1338 | return parse_switch_statement (result, cfile, lose); | |
1339 | ||
1340 | case CASE: | |
1341 | token = next_token (&val, cfile); | |
1342 | if (case_context == context_any) { | |
1343 | parse_warn (cfile, | |
1344 | "case statement in inappropriate scope."); | |
1345 | *lose = 1; | |
1346 | skip_to_semi (cfile); | |
1347 | return 0; | |
1348 | } | |
1349 | return parse_case_statement (result, | |
1350 | cfile, lose, case_context); | |
1351 | ||
1352 | switch_default: | |
1353 | token = next_token (&val, cfile); | |
1354 | if (case_context == context_any) { | |
1355 | parse_warn (cfile, "switch default statement in %s", | |
1356 | "inappropriate scope."); | |
1357 | ||
1358 | *lose = 1; | |
1359 | return 0; | |
1360 | } else { | |
4bd8800e | 1361 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
1362 | log_fatal ("no memory for default statement."); |
1363 | (*result) -> op = default_statement; | |
1364 | return 1; | |
1365 | } | |
1366 | ||
1367 | case TOKEN_SET: | |
1368 | token = next_token (&val, cfile); | |
f579f39f TL |
1369 | |
1370 | token = next_token (&val, cfile); | |
1371 | if (token != NAME && token != NUMBER_OR_NAME) { | |
1372 | parse_warn (cfile, | |
1373 | "%s can't be a variable name", val); | |
1374 | badset: | |
1375 | skip_to_semi (cfile); | |
1376 | *lose = 1; | |
1377 | return 0; | |
1378 | } | |
1379 | ||
4bd8800e | 1380 | if (!executable_statement_allocate (result, MDL)) |
f579f39f | 1381 | log_fatal ("no memory for set statement."); |
fdac15d9 TL |
1382 | (*result) -> op = set_statement; |
1383 | (*result) -> data.set.name = dmalloc (strlen (val) + 1, MDL); | |
f579f39f TL |
1384 | if (!(*result)->data.set.name) |
1385 | log_fatal ("can't allocate variable name"); | |
1386 | strcpy ((*result) -> data.set.name, val); | |
1387 | token = next_token (&val, cfile); | |
1388 | if (token != EQUAL) { | |
1389 | parse_warn (cfile, "expecting '=' in set statement."); | |
1390 | goto badset; | |
1391 | } | |
1392 | ||
1393 | if (!parse_expression (&(*result) -> data.set.expr, | |
1394 | cfile, lose, context_data, /* XXX */ | |
1395 | (struct expression **)0, expr_none)) { | |
1396 | if (!*lose) | |
1397 | parse_warn (cfile, | |
1398 | "expecting data expression."); | |
1399 | else | |
1400 | *lose = 1; | |
1401 | skip_to_semi (cfile); | |
4bd8800e | 1402 | executable_statement_dereference (result, MDL); |
f579f39f TL |
1403 | return 0; |
1404 | } | |
1405 | parse_semi (cfile); | |
1406 | break; | |
1407 | ||
fdac15d9 TL |
1408 | case UNSET: |
1409 | token = next_token (&val, cfile); | |
1410 | ||
1411 | token = next_token (&val, cfile); | |
1412 | if (token != NAME && token != NUMBER_OR_NAME) { | |
1413 | parse_warn (cfile, | |
1414 | "%s can't be a variable name", val); | |
1415 | badunset: | |
1416 | skip_to_semi (cfile); | |
1417 | *lose = 1; | |
1418 | return 0; | |
1419 | } | |
1420 | ||
4bd8800e | 1421 | if (!executable_statement_allocate (result, MDL)) |
fdac15d9 TL |
1422 | log_fatal ("no memory for set statement."); |
1423 | (*result) -> op = unset_statement; | |
1424 | (*result) -> data.unset = dmalloc (strlen (val) + 1, MDL); | |
1425 | if (!(*result)->data.unset) | |
1426 | log_fatal ("can't allocate variable name"); | |
1427 | strcpy ((*result) -> data.unset, val); | |
1428 | parse_semi (cfile); | |
1429 | break; | |
1430 | ||
1431 | case EVAL: | |
1432 | token = next_token (&val, cfile); | |
1433 | ||
4bd8800e | 1434 | if (!executable_statement_allocate (result, MDL)) |
fdac15d9 TL |
1435 | log_fatal ("no memory for eval statement."); |
1436 | (*result) -> op = eval_statement; | |
1437 | ||
1438 | if (!parse_expression (&(*result) -> data.eval, | |
1439 | cfile, lose, context_data, /* XXX */ | |
1440 | (struct expression **)0, expr_none)) { | |
1441 | if (!*lose) | |
1442 | parse_warn (cfile, | |
1443 | "expecting data expression."); | |
1444 | else | |
1445 | *lose = 1; | |
1446 | skip_to_semi (cfile); | |
4bd8800e | 1447 | executable_statement_dereference (result, MDL); |
fdac15d9 TL |
1448 | return 0; |
1449 | } | |
1450 | parse_semi (cfile); | |
1451 | break; | |
1452 | ||
be6be08d TL |
1453 | default: |
1454 | *lose = 0; | |
79a65726 | 1455 | return 0; |
be6be08d TL |
1456 | } |
1457 | ||
79a65726 TL |
1458 | return 1; |
1459 | } | |
1460 | ||
1461 | /* | |
f579f39f TL |
1462 | * on-statement :== event-types LBRACE executable-statements RBRACE |
1463 | * event-types :== event-type OR event-types | | |
1464 | * event-type | |
79a65726 TL |
1465 | * event-type :== EXPIRY | COMMIT | RELEASE |
1466 | */ | |
1467 | ||
1468 | int parse_on_statement (result, cfile, lose) | |
1469 | struct executable_statement **result; | |
4615d498 | 1470 | struct parse *cfile; |
79a65726 TL |
1471 | int *lose; |
1472 | { | |
1473 | enum dhcp_token token; | |
b1b7b521 | 1474 | const char *val; |
79a65726 | 1475 | |
4bd8800e | 1476 | if (!executable_statement_allocate (result, MDL)) |
8ae2d595 | 1477 | log_fatal ("no memory for new statement."); |
33500c7d | 1478 | (*result) -> op = on_statement; |
79a65726 | 1479 | |
f579f39f TL |
1480 | do { |
1481 | token = next_token (&val, cfile); | |
1482 | switch (token) { | |
1483 | case EXPIRY: | |
1484 | (*result) -> data.on.evtypes |= ON_EXPIRY; | |
1485 | break; | |
79a65726 | 1486 | |
f579f39f | 1487 | case COMMIT: |
fdac15d9 | 1488 | (*result) -> data.on.evtypes |= ON_COMMIT; |
f579f39f TL |
1489 | break; |
1490 | ||
1491 | case RELEASE: | |
fdac15d9 | 1492 | (*result) -> data.on.evtypes |= ON_RELEASE; |
f579f39f TL |
1493 | break; |
1494 | ||
1495 | default: | |
1496 | parse_warn (cfile, "expecting a lease event type"); | |
1497 | skip_to_semi (cfile); | |
1498 | *lose = 1; | |
4bd8800e | 1499 | executable_statement_dereference (result, MDL); |
fdac15d9 | 1500 | return 0; |
f579f39f TL |
1501 | } |
1502 | token = next_token (&val, cfile); | |
1503 | } while (token == OR); | |
79a65726 | 1504 | |
f579f39f TL |
1505 | /* Semicolon means no statements. */ |
1506 | if (token == SEMI) | |
1507 | return 1; | |
1508 | ||
79a65726 | 1509 | if (token != LBRACE) { |
4615d498 | 1510 | parse_warn (cfile, "left brace expected."); |
79a65726 TL |
1511 | skip_to_semi (cfile); |
1512 | *lose = 1; | |
4bd8800e | 1513 | executable_statement_dereference (result, MDL); |
79a65726 TL |
1514 | return 0; |
1515 | } | |
1516 | if (!parse_executable_statements (&(*result) -> data.on.statements, | |
f579f39f | 1517 | cfile, lose, context_any)) { |
79a65726 TL |
1518 | if (*lose) { |
1519 | /* Try to even things up. */ | |
1520 | do { | |
1521 | token = next_token (&val, cfile); | |
1522 | } while (token != EOF && token != RBRACE); | |
4bd8800e | 1523 | executable_statement_dereference (result, MDL); |
79a65726 TL |
1524 | return 0; |
1525 | } | |
1526 | } | |
1527 | token = next_token (&val, cfile); | |
1528 | if (token != RBRACE) { | |
4615d498 | 1529 | parse_warn (cfile, "right brace expected."); |
79a65726 TL |
1530 | skip_to_semi (cfile); |
1531 | *lose = 1; | |
4bd8800e | 1532 | executable_statement_dereference (result, MDL); |
79a65726 TL |
1533 | return 0; |
1534 | } | |
1535 | return 1; | |
be6be08d TL |
1536 | } |
1537 | ||
f579f39f TL |
1538 | /* |
1539 | * switch-statement :== LPAREN expr RPAREN LBRACE executable-statements RBRACE | |
1540 | * | |
1541 | */ | |
1542 | ||
1543 | int parse_switch_statement (result, cfile, lose) | |
1544 | struct executable_statement **result; | |
1545 | struct parse *cfile; | |
1546 | int *lose; | |
1547 | { | |
1548 | enum dhcp_token token; | |
1549 | const char *val; | |
1550 | ||
4bd8800e | 1551 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
1552 | log_fatal ("no memory for new statement."); |
1553 | (*result) -> op = switch_statement; | |
1554 | ||
1555 | token = next_token (&val, cfile); | |
1556 | if (token != LPAREN) { | |
1557 | parse_warn (cfile, "expecting left brace."); | |
1558 | pfui: | |
1559 | *lose = 1; | |
1560 | skip_to_semi (cfile); | |
1561 | gnorf: | |
4bd8800e | 1562 | executable_statement_dereference (result, MDL); |
f579f39f TL |
1563 | return 0; |
1564 | } | |
1565 | ||
1566 | if (!parse_expression (&(*result) -> data.s_switch.expr, | |
1567 | cfile, lose, context_data_or_numeric, | |
1568 | (struct expression **)0, expr_none)) { | |
1569 | if (!*lose) { | |
1570 | parse_warn (cfile, | |
1571 | "expecting data or numeric expression."); | |
1572 | goto pfui; | |
1573 | } | |
1574 | goto gnorf; | |
1575 | } | |
1576 | ||
1577 | token = next_token (&val, cfile); | |
1578 | if (token != RPAREN) { | |
1579 | parse_warn (cfile, "right paren expected."); | |
1580 | goto pfui; | |
1581 | } | |
1582 | ||
1583 | token = next_token (&val, cfile); | |
1584 | if (token != LBRACE) { | |
1585 | parse_warn (cfile, "left brace expected."); | |
1586 | goto pfui; | |
1587 | } | |
1588 | if (!(parse_executable_statements | |
1589 | (&(*result) -> data.s_switch.statements, cfile, lose, | |
1590 | (is_data_expression ((*result) -> data.s_switch.expr) | |
1591 | ? context_data : context_numeric)))) { | |
1592 | if (*lose) { | |
1593 | skip_to_rbrace (cfile, 1); | |
4bd8800e | 1594 | executable_statement_dereference (result, MDL); |
f579f39f TL |
1595 | return 0; |
1596 | } | |
1597 | } | |
1598 | token = next_token (&val, cfile); | |
1599 | if (token != RBRACE) { | |
1600 | parse_warn (cfile, "right brace expected."); | |
1601 | goto pfui; | |
1602 | } | |
1603 | return 1; | |
1604 | } | |
1605 | ||
1606 | /* | |
1607 | * case-statement :== CASE expr COLON | |
1608 | * | |
1609 | */ | |
1610 | ||
1611 | int parse_case_statement (result, cfile, lose, case_context) | |
1612 | struct executable_statement **result; | |
1613 | struct parse *cfile; | |
1614 | int *lose; | |
1615 | enum expression_context case_context; | |
1616 | { | |
1617 | enum dhcp_token token; | |
1618 | const char *val; | |
1619 | ||
4bd8800e | 1620 | if (!executable_statement_allocate (result, MDL)) |
f579f39f TL |
1621 | log_fatal ("no memory for new statement."); |
1622 | (*result) -> op = case_statement; | |
1623 | ||
1624 | if (!parse_expression (&(*result) -> data.c_case, | |
1625 | cfile, lose, case_context, | |
1626 | (struct expression **)0, expr_none)) | |
1627 | { | |
1628 | if (!*lose) { | |
1629 | parse_warn (cfile, "expecting %s expression.", | |
1630 | (case_context == context_data | |
1631 | ? "data" : "numeric")); | |
1632 | } | |
1633 | pfui: | |
1634 | *lose = 1; | |
1635 | skip_to_semi (cfile); | |
4bd8800e | 1636 | executable_statement_dereference (result, MDL); |
f579f39f TL |
1637 | return 0; |
1638 | } | |
1639 | ||
1640 | token = next_token (&val, cfile); | |
1641 | if (token != COLON) { | |
1642 | parse_warn (cfile, "colon expected."); | |
1643 | goto pfui; | |
1644 | } | |
1645 | return 1; | |
1646 | } | |
1647 | ||
be6be08d TL |
1648 | /* |
1649 | * if-statement :== boolean-expression LBRACE executable-statements RBRACE | |
1650 | * else-statement | |
1651 | * | |
1652 | * else-statement :== <null> | | |
1653 | * ELSE LBRACE executable-statements RBRACE | | |
1654 | * ELSE IF if-statement | | |
1655 | * ELSIF if-statement | |
1656 | */ | |
1657 | ||
79a65726 TL |
1658 | int parse_if_statement (result, cfile, lose) |
1659 | struct executable_statement **result; | |
4615d498 | 1660 | struct parse *cfile; |
be6be08d TL |
1661 | int *lose; |
1662 | { | |
02a015fb | 1663 | enum dhcp_token token; |
b1b7b521 | 1664 | const char *val; |
fdac15d9 | 1665 | int parenp; |
be6be08d | 1666 | |
4bd8800e | 1667 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
1668 | log_fatal ("no memory for if statement."); |
1669 | ||
1670 | (*result) -> op = if_statement; | |
1671 | ||
fdac15d9 TL |
1672 | token = peek_token (&val, cfile); |
1673 | if (token == LPAREN) { | |
1674 | parenp = 1; | |
1675 | next_token (&val, cfile); | |
1676 | } else | |
1677 | parenp = 0; | |
1678 | ||
1679 | ||
79a65726 TL |
1680 | if (!parse_boolean_expression (&(*result) -> data.ie.expr, |
1681 | cfile, lose)) { | |
be6be08d | 1682 | if (!*lose) |
4615d498 | 1683 | parse_warn (cfile, "boolean expression expected."); |
4bd8800e | 1684 | executable_statement_dereference (result, MDL); |
166e63eb | 1685 | *lose = 1; |
79a65726 | 1686 | return 0; |
be6be08d | 1687 | } |
02a015fb TL |
1688 | #if defined (DEBUG_EXPRESSION_PARSE) |
1689 | print_expression ("if condition", if_condition); | |
1690 | #endif | |
fdac15d9 TL |
1691 | if (parenp) { |
1692 | token = next_token (&val, cfile); | |
1693 | if (token != RPAREN) { | |
1694 | parse_warn (cfile, "expecting right paren."); | |
1695 | *lose = 1; | |
4bd8800e | 1696 | executable_statement_dereference (result, MDL); |
fdac15d9 TL |
1697 | return 0; |
1698 | } | |
1699 | } | |
be6be08d TL |
1700 | token = next_token (&val, cfile); |
1701 | if (token != LBRACE) { | |
4615d498 | 1702 | parse_warn (cfile, "left brace expected."); |
be6be08d TL |
1703 | skip_to_semi (cfile); |
1704 | *lose = 1; | |
4bd8800e | 1705 | executable_statement_dereference (result, MDL); |
79a65726 | 1706 | return 0; |
be6be08d | 1707 | } |
79a65726 | 1708 | if (!parse_executable_statements (&(*result) -> data.ie.true, |
f579f39f | 1709 | cfile, lose, context_any)) { |
79a65726 TL |
1710 | if (*lose) { |
1711 | /* Try to even things up. */ | |
1712 | do { | |
1713 | token = next_token (&val, cfile); | |
1714 | } while (token != EOF && token != RBRACE); | |
4bd8800e | 1715 | executable_statement_dereference (result, MDL); |
79a65726 TL |
1716 | return 0; |
1717 | } | |
efc79acb | 1718 | } |
79a65726 | 1719 | token = next_token (&val, cfile); |
be6be08d | 1720 | if (token != RBRACE) { |
4615d498 | 1721 | parse_warn (cfile, "right brace expected."); |
be6be08d TL |
1722 | skip_to_semi (cfile); |
1723 | *lose = 1; | |
4bd8800e | 1724 | executable_statement_dereference (result, MDL); |
79a65726 | 1725 | return 0; |
be6be08d TL |
1726 | } |
1727 | token = peek_token (&val, cfile); | |
1728 | if (token == ELSE) { | |
1729 | token = next_token (&val, cfile); | |
1730 | token = peek_token (&val, cfile); | |
1731 | if (token == IF) { | |
1732 | token = next_token (&val, cfile); | |
79a65726 TL |
1733 | if (!parse_if_statement (&(*result) -> data.ie.false, |
1734 | cfile, lose)) { | |
166e63eb TL |
1735 | if (!*lose) |
1736 | parse_warn (cfile, | |
4bd8800e TL |
1737 | "expecting if statement"); |
1738 | executable_statement_dereference (result, MDL); | |
166e63eb TL |
1739 | *lose = 1; |
1740 | return 0; | |
79a65726 | 1741 | } |
be6be08d | 1742 | } else if (token != LBRACE) { |
4615d498 | 1743 | parse_warn (cfile, "left brace or if expected."); |
be6be08d TL |
1744 | skip_to_semi (cfile); |
1745 | *lose = 1; | |
4bd8800e | 1746 | executable_statement_dereference (result, MDL); |
79a65726 | 1747 | return 0; |
be6be08d TL |
1748 | } else { |
1749 | token = next_token (&val, cfile); | |
33500c7d | 1750 | if (!(parse_executable_statements |
f579f39f TL |
1751 | (&(*result) -> data.ie.false, |
1752 | cfile, lose, context_any))) { | |
4bd8800e | 1753 | executable_statement_dereference (result, MDL); |
79a65726 TL |
1754 | return 0; |
1755 | } | |
25541f2f TL |
1756 | token = next_token (&val, cfile); |
1757 | if (token != RBRACE) { | |
4615d498 | 1758 | parse_warn (cfile, "right brace expected."); |
25541f2f TL |
1759 | skip_to_semi (cfile); |
1760 | *lose = 1; | |
4bd8800e | 1761 | executable_statement_dereference (result, MDL); |
79a65726 | 1762 | return 0; |
25541f2f | 1763 | } |
be6be08d TL |
1764 | } |
1765 | } else if (token == ELSIF) { | |
1766 | token = next_token (&val, cfile); | |
79a65726 TL |
1767 | if (!parse_if_statement (&(*result) -> data.ie.false, |
1768 | cfile, lose)) { | |
166e63eb TL |
1769 | if (!*lose) |
1770 | parse_warn (cfile, | |
1771 | "expecting conditional."); | |
4bd8800e | 1772 | executable_statement_dereference (result, MDL); |
166e63eb TL |
1773 | *lose = 1; |
1774 | return 0; | |
79a65726 | 1775 | } |
be6be08d | 1776 | } else |
79a65726 | 1777 | (*result) -> data.ie.false = (struct executable_statement *)0; |
be6be08d | 1778 | |
79a65726 | 1779 | return 1; |
be6be08d TL |
1780 | } |
1781 | ||
1782 | /* | |
1783 | * boolean_expression :== CHECK STRING | | |
1784 | * NOT boolean-expression | | |
1785 | * data-expression EQUAL data-expression | | |
2b965a44 | 1786 | * data-expression BANG EQUAL data-expression | |
be6be08d TL |
1787 | * boolean-expression AND boolean-expression | |
1788 | * boolean-expression OR boolean-expression | |
02a015fb | 1789 | * EXISTS OPTION-NAME |
be6be08d TL |
1790 | */ |
1791 | ||
02a015fb TL |
1792 | int parse_boolean_expression (expr, cfile, lose) |
1793 | struct expression **expr; | |
4615d498 | 1794 | struct parse *cfile; |
02a015fb TL |
1795 | int *lose; |
1796 | { | |
1797 | /* Parse an expression... */ | |
1798 | if (!parse_expression (expr, cfile, lose, context_boolean, | |
1799 | (struct expression **)0, expr_none)) | |
1800 | return 0; | |
1801 | ||
1802 | if (!is_boolean_expression (*expr)) { | |
4615d498 | 1803 | parse_warn (cfile, "Expecting a boolean expression."); |
02a015fb | 1804 | *lose = 1; |
4bd8800e | 1805 | expression_dereference (expr, MDL); |
02a015fb TL |
1806 | return 0; |
1807 | } | |
1808 | return 1; | |
1809 | } | |
1810 | ||
1811 | /* | |
1812 | * data_expression :== SUBSTRING LPAREN data-expression COMMA | |
1813 | * numeric-expression COMMA | |
1814 | * numeric-expression RPAREN | | |
a82abfc7 TL |
1815 | * CONCAT LPAREN data-expression COMMA |
1816 | data-expression RPAREN | |
02a015fb | 1817 | * SUFFIX LPAREN data_expression COMMA |
a82abfc7 | 1818 | * numeric-expression RPAREN | |
02a015fb TL |
1819 | * OPTION option_name | |
1820 | * HARDWARE | | |
1821 | * PACKET LPAREN numeric-expression COMMA | |
1822 | * numeric-expression RPAREN | | |
1823 | * STRING | | |
1824 | * colon_seperated_hex_list | |
1825 | */ | |
1826 | ||
1827 | int parse_data_expression (expr, cfile, lose) | |
1828 | struct expression **expr; | |
4615d498 | 1829 | struct parse *cfile; |
02a015fb TL |
1830 | int *lose; |
1831 | { | |
1832 | /* Parse an expression... */ | |
1833 | if (!parse_expression (expr, cfile, lose, context_data, | |
1834 | (struct expression **)0, expr_none)) | |
1835 | return 0; | |
1836 | ||
1837 | if (!is_data_expression (*expr)) { | |
4615d498 | 1838 | parse_warn (cfile, "Expecting a data expression."); |
02a015fb TL |
1839 | *lose = 1; |
1840 | return 0; | |
1841 | } | |
1842 | return 1; | |
1843 | } | |
1844 | ||
1845 | /* | |
1846 | * numeric-expression :== EXTRACT_INT LPAREN data-expression | |
1847 | * COMMA number RPAREN | | |
1848 | * NUMBER | |
1849 | */ | |
1850 | ||
1851 | int parse_numeric_expression (expr, cfile, lose) | |
1852 | struct expression **expr; | |
4615d498 | 1853 | struct parse *cfile; |
02a015fb TL |
1854 | int *lose; |
1855 | { | |
1856 | /* Parse an expression... */ | |
1857 | if (!parse_expression (expr, cfile, lose, context_numeric, | |
1858 | (struct expression **)0, expr_none)) | |
1859 | return 0; | |
1860 | ||
1861 | if (!is_numeric_expression (*expr)) { | |
4615d498 | 1862 | parse_warn (cfile, "Expecting a numeric expression."); |
02a015fb TL |
1863 | *lose = 1; |
1864 | return 0; | |
1865 | } | |
1866 | return 1; | |
1867 | } | |
1868 | ||
9fb2fb28 TL |
1869 | /* |
1870 | * dns-expression :== | |
1871 | * UPDATE LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
1872 | * data-expression COMMA numeric-expression RPAREN | |
1873 | * DELETE LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
1874 | * data-expression RPAREN | |
1875 | * EXISTS LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
1876 | * data-expression RPAREN | |
1877 | * NOT EXISTS LPAREN ns-class COMMA ns-type COMMA data-expression COMMA | |
1878 | * data-expression RPAREN | |
1879 | * ns-class :== IN | CHAOS | HS | NUMBER | |
1880 | * ns-type :== A | PTR | MX | TXT | NUMBER | |
1881 | */ | |
1882 | ||
1883 | int parse_dns_expression (expr, cfile, lose) | |
1884 | struct expression **expr; | |
1885 | struct parse *cfile; | |
1886 | int *lose; | |
1887 | { | |
1888 | /* Parse an expression... */ | |
1889 | if (!parse_expression (expr, cfile, lose, context_dns, | |
1890 | (struct expression **)0, expr_none)) | |
1891 | return 0; | |
1892 | ||
1893 | if (!is_dns_expression (*expr)) { | |
1894 | parse_warn (cfile, "Expecting a dns update subexpression."); | |
1895 | *lose = 1; | |
1896 | return 0; | |
1897 | } | |
1898 | return 1; | |
1899 | } | |
1900 | ||
02a015fb | 1901 | /* Parse a subexpression that does not contain a binary operator. */ |
be6be08d | 1902 | |
02a015fb TL |
1903 | int parse_non_binary (expr, cfile, lose, context) |
1904 | struct expression **expr; | |
4615d498 | 1905 | struct parse *cfile; |
be6be08d | 1906 | int *lose; |
02a015fb | 1907 | enum expression_context context; |
be6be08d | 1908 | { |
02a015fb | 1909 | enum dhcp_token token; |
b1b7b521 | 1910 | const char *val; |
be6be08d | 1911 | struct collection *col; |
02a015fb | 1912 | struct option *option; |
79a65726 | 1913 | struct expression *nexp; |
b1b7b521 | 1914 | int known; |
9fb2fb28 | 1915 | enum expr_op opcode; |
f579f39f | 1916 | const char *s; |
fdac15d9 TL |
1917 | struct executable_statement *stmt; |
1918 | int i; | |
be6be08d TL |
1919 | |
1920 | token = peek_token (&val, cfile); | |
1921 | ||
1922 | /* Check for unary operators... */ | |
1923 | switch (token) { | |
1924 | case CHECK: | |
1925 | token = next_token (&val, cfile); | |
1926 | token = next_token (&val, cfile); | |
1927 | if (token != STRING) { | |
4615d498 | 1928 | parse_warn (cfile, "string expected."); |
be6be08d TL |
1929 | skip_to_semi (cfile); |
1930 | *lose = 1; | |
02a015fb | 1931 | return 0; |
be6be08d TL |
1932 | } |
1933 | for (col = collections; col; col = col -> next) | |
1934 | if (!strcmp (col -> name, val)) | |
1935 | break; | |
1936 | if (!col) { | |
4615d498 | 1937 | parse_warn (cfile, "unknown collection."); |
be6be08d | 1938 | *lose = 1; |
02a015fb | 1939 | return 0; |
be6be08d | 1940 | } |
4bd8800e | 1941 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 1942 | log_fatal ("can't allocate expression"); |
02a015fb TL |
1943 | (*expr) -> op = expr_check; |
1944 | (*expr) -> data.check = col; | |
1945 | break; | |
be6be08d | 1946 | |
5e6fb153 | 1947 | case TOKEN_NOT: |
be6be08d | 1948 | token = next_token (&val, cfile); |
9fb2fb28 TL |
1949 | if (context == context_dns) { |
1950 | token = peek_token (&val, cfile); | |
1951 | goto not_exists; | |
1952 | } | |
4bd8800e | 1953 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 1954 | log_fatal ("can't allocate expression"); |
02a015fb TL |
1955 | (*expr) -> op = expr_not; |
1956 | if (!parse_non_binary (&(*expr) -> data.not, | |
1957 | cfile, lose, context)) { | |
be6be08d | 1958 | if (!*lose) { |
4615d498 | 1959 | parse_warn (cfile, "expression expected"); |
be6be08d TL |
1960 | skip_to_semi (cfile); |
1961 | } | |
1962 | *lose = 1; | |
4bd8800e | 1963 | expression_dereference (expr, MDL); |
02a015fb | 1964 | return 0; |
be6be08d | 1965 | } |
be6be08d | 1966 | break; |
be6be08d | 1967 | |
02a015fb | 1968 | case EXISTS: |
9fb2fb28 TL |
1969 | if (context == context_dns) |
1970 | goto ns_exists; | |
02a015fb | 1971 | token = next_token (&val, cfile); |
4bd8800e | 1972 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 1973 | log_fatal ("can't allocate expression"); |
02a015fb | 1974 | (*expr) -> op = expr_exists; |
b1b7b521 TL |
1975 | known = 0; |
1976 | (*expr) -> data.option = parse_option_name (cfile, 0, &known); | |
02a015fb TL |
1977 | if (!(*expr) -> data.option) { |
1978 | *lose = 1; | |
4bd8800e | 1979 | expression_dereference (expr, MDL); |
02a015fb | 1980 | return 0; |
be6be08d | 1981 | } |
02a015fb | 1982 | break; |
be6be08d | 1983 | |
1c5d5731 TL |
1984 | case STATIC: |
1985 | token = next_token (&val, cfile); | |
4bd8800e | 1986 | if (!expression_allocate (expr, MDL)) |
1c5d5731 TL |
1987 | log_fatal ("can't allocate expression"); |
1988 | (*expr) -> op = expr_static; | |
1989 | break; | |
1990 | ||
70330633 TL |
1991 | case KNOWN: |
1992 | token = next_token (&val, cfile); | |
4bd8800e | 1993 | if (!expression_allocate (expr, MDL)) |
70330633 TL |
1994 | log_fatal ("can't allocate expression"); |
1995 | (*expr) -> op = expr_known; | |
1996 | break; | |
1997 | ||
be6be08d TL |
1998 | case SUBSTRING: |
1999 | token = next_token (&val, cfile); | |
4bd8800e | 2000 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 2001 | log_fatal ("can't allocate expression"); |
02a015fb | 2002 | (*expr) -> op = expr_substring; |
be6be08d TL |
2003 | |
2004 | token = next_token (&val, cfile); | |
2005 | if (token != LPAREN) { | |
2006 | nolparen: | |
4bd8800e | 2007 | expression_dereference (expr, MDL); |
4615d498 | 2008 | parse_warn (cfile, "left parenthesis expected."); |
be6be08d | 2009 | *lose = 1; |
02a015fb | 2010 | return 0; |
be6be08d TL |
2011 | } |
2012 | ||
02a015fb TL |
2013 | if (!parse_data_expression (&(*expr) -> data.substring.expr, |
2014 | cfile, lose)) { | |
be6be08d | 2015 | nodata: |
4bd8800e | 2016 | expression_dereference (expr, MDL); |
4615d498 | 2017 | parse_warn (cfile, "expecting data expression."); |
be6be08d TL |
2018 | skip_to_semi (cfile); |
2019 | *lose = 1; | |
02a015fb | 2020 | return 0; |
be6be08d TL |
2021 | } |
2022 | ||
2023 | token = next_token (&val, cfile); | |
2024 | if (token != COMMA) { | |
2025 | nocomma: | |
4bd8800e | 2026 | expression_dereference (expr, MDL); |
4615d498 | 2027 | parse_warn (cfile, "comma expected."); |
be6be08d | 2028 | *lose = 1; |
02a015fb TL |
2029 | |
2030 | return 0; | |
be6be08d TL |
2031 | } |
2032 | ||
02a015fb TL |
2033 | if (!parse_numeric_expression |
2034 | (&(*expr) -> data.substring.offset,cfile, lose)) { | |
be6be08d TL |
2035 | nonum: |
2036 | if (!*lose) { | |
4615d498 TL |
2037 | parse_warn (cfile, |
2038 | "expecting numeric expression."); | |
be6be08d TL |
2039 | skip_to_semi (cfile); |
2040 | *lose = 1; | |
2041 | } | |
4bd8800e | 2042 | expression_dereference (expr, MDL); |
02a015fb | 2043 | return 0; |
be6be08d TL |
2044 | } |
2045 | ||
2046 | token = next_token (&val, cfile); | |
2047 | if (token != COMMA) | |
2048 | goto nocomma; | |
2049 | ||
02a015fb TL |
2050 | if (!parse_numeric_expression |
2051 | (&(*expr) -> data.substring.len, cfile, lose)) | |
be6be08d TL |
2052 | goto nonum; |
2053 | ||
2054 | token = next_token (&val, cfile); | |
2055 | if (token != RPAREN) { | |
2056 | norparen: | |
4615d498 | 2057 | parse_warn (cfile, "right parenthesis expected."); |
be6be08d | 2058 | *lose = 1; |
4bd8800e | 2059 | expression_dereference (expr, MDL); |
02a015fb | 2060 | return 0; |
be6be08d | 2061 | } |
02a015fb | 2062 | break; |
be6be08d TL |
2063 | |
2064 | case SUFFIX: | |
2065 | token = next_token (&val, cfile); | |
4bd8800e | 2066 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 2067 | log_fatal ("can't allocate expression"); |
02a015fb | 2068 | (*expr) -> op = expr_suffix; |
be6be08d TL |
2069 | |
2070 | token = next_token (&val, cfile); | |
2071 | if (token != LPAREN) | |
2072 | goto nolparen; | |
2073 | ||
02a015fb TL |
2074 | if (!parse_data_expression (&(*expr) -> data.suffix.expr, |
2075 | cfile, lose)) | |
be6be08d TL |
2076 | goto nodata; |
2077 | ||
2078 | token = next_token (&val, cfile); | |
2079 | if (token != COMMA) | |
2080 | goto nocomma; | |
2081 | ||
02a015fb TL |
2082 | if (!parse_data_expression (&(*expr) -> data.suffix.len, |
2083 | cfile, lose)) | |
be6be08d TL |
2084 | goto nonum; |
2085 | ||
2086 | token = next_token (&val, cfile); | |
2087 | if (token != RPAREN) | |
2088 | goto norparen; | |
02a015fb | 2089 | break; |
be6be08d | 2090 | |
a82abfc7 TL |
2091 | case CONCAT: |
2092 | token = next_token (&val, cfile); | |
4bd8800e | 2093 | if (!expression_allocate (expr, MDL)) |
a82abfc7 TL |
2094 | log_fatal ("can't allocate expression"); |
2095 | (*expr) -> op = expr_concat; | |
2096 | ||
2097 | token = next_token (&val, cfile); | |
2098 | if (token != LPAREN) | |
2099 | goto nolparen; | |
2100 | ||
2101 | if (!parse_data_expression (&(*expr) -> data.concat [0], | |
2102 | cfile, lose)) | |
2103 | goto nodata; | |
2104 | ||
2105 | token = next_token (&val, cfile); | |
2106 | if (token != COMMA) | |
2107 | goto nocomma; | |
2108 | ||
720c8262 | 2109 | concat_another: |
a82abfc7 TL |
2110 | if (!parse_data_expression (&(*expr) -> data.concat [1], |
2111 | cfile, lose)) | |
2112 | goto nodata; | |
2113 | ||
2114 | token = next_token (&val, cfile); | |
720c8262 TL |
2115 | |
2116 | if (token == COMMA) { | |
2117 | nexp = (struct expression *)0; | |
4bd8800e | 2118 | if (!expression_allocate (&nexp, MDL)) |
720c8262 TL |
2119 | log_fatal ("can't allocate at CONCAT2"); |
2120 | nexp -> op = expr_concat; | |
4bd8800e TL |
2121 | expression_reference (&nexp -> data.concat [0], |
2122 | *expr, MDL); | |
2123 | expression_dereference (expr, MDL); | |
2124 | expression_reference (expr, nexp, MDL); | |
720c8262 TL |
2125 | goto concat_another; |
2126 | } | |
2127 | ||
a82abfc7 TL |
2128 | if (token != RPAREN) |
2129 | goto norparen; | |
2130 | break; | |
2131 | ||
da38df14 TL |
2132 | case BINARY_TO_ASCII: |
2133 | token = next_token (&val, cfile); | |
4bd8800e | 2134 | if (!expression_allocate (expr, MDL)) |
da38df14 | 2135 | log_fatal ("can't allocate expression"); |
eb42f00e | 2136 | (*expr) -> op = expr_binary_to_ascii; |
da38df14 TL |
2137 | |
2138 | token = next_token (&val, cfile); | |
2139 | if (token != LPAREN) | |
2140 | goto nolparen; | |
2141 | ||
2142 | if (!parse_numeric_expression (&(*expr) -> data.b2a.base, | |
2143 | cfile, lose)) | |
2144 | goto nodata; | |
2145 | ||
2146 | token = next_token (&val, cfile); | |
2147 | if (token != COMMA) | |
2148 | goto nocomma; | |
2149 | ||
2150 | if (!parse_numeric_expression (&(*expr) -> data.b2a.width, | |
2151 | cfile, lose)) | |
2152 | goto nodata; | |
2153 | ||
2154 | token = next_token (&val, cfile); | |
2155 | if (token != COMMA) | |
2156 | goto nocomma; | |
2157 | ||
2158 | if (!parse_data_expression (&(*expr) -> data.b2a.seperator, | |
2159 | cfile, lose)) | |
2160 | goto nodata; | |
2161 | ||
2162 | token = next_token (&val, cfile); | |
2163 | if (token != COMMA) | |
2164 | goto nocomma; | |
2165 | ||
2166 | if (!parse_data_expression (&(*expr) -> data.b2a.buffer, | |
2167 | cfile, lose)) | |
2168 | goto nodata; | |
2169 | ||
2170 | token = next_token (&val, cfile); | |
2171 | if (token != RPAREN) | |
2172 | goto norparen; | |
2173 | break; | |
2174 | ||
2175 | case REVERSE: | |
2176 | token = next_token (&val, cfile); | |
4bd8800e | 2177 | if (!expression_allocate (expr, MDL)) |
da38df14 | 2178 | log_fatal ("can't allocate expression"); |
eb42f00e | 2179 | (*expr) -> op = expr_reverse; |
da38df14 TL |
2180 | |
2181 | token = next_token (&val, cfile); | |
2182 | if (token != LPAREN) | |
2183 | goto nolparen; | |
2184 | ||
2185 | if (!(parse_numeric_expression | |
2186 | (&(*expr) -> data.reverse.width, cfile, lose))) | |
2187 | goto nodata; | |
2188 | ||
2189 | token = next_token (&val, cfile); | |
2190 | if (token != COMMA) | |
2191 | goto nocomma; | |
2192 | ||
2193 | if (!(parse_data_expression | |
2194 | (&(*expr) -> data.reverse.buffer, cfile, lose))) | |
2195 | goto nodata; | |
2196 | ||
2197 | token = next_token (&val, cfile); | |
2198 | if (token != RPAREN) | |
2199 | goto norparen; | |
2200 | break; | |
2201 | ||
fdac15d9 | 2202 | case PICK: |
79a65726 TL |
2203 | /* pick (a, b, c) actually produces an internal representation |
2204 | that looks like pick (a, pick (b, pick (c, nil))). */ | |
2205 | token = next_token (&val, cfile); | |
4bd8800e | 2206 | if (!(expression_allocate (expr, MDL))) |
79a65726 | 2207 | log_fatal ("can't allocate expression"); |
79a65726 | 2208 | |
be6be08d | 2209 | token = next_token (&val, cfile); |
79a65726 TL |
2210 | if (token != LPAREN) |
2211 | goto nolparen; | |
2212 | ||
2213 | nexp = *expr; | |
2214 | do { | |
392208d3 | 2215 | nexp -> op = expr_pick_first_value; |
79a65726 TL |
2216 | if (!(parse_data_expression |
2217 | (&nexp -> data.pick_first_value.car, | |
2218 | cfile, lose))) | |
2219 | goto nodata; | |
2220 | ||
2221 | token = next_token (&val, cfile); | |
2222 | if (token == COMMA) { | |
2223 | if (!(expression_allocate | |
2224 | (&nexp -> data.pick_first_value.cdr, | |
4bd8800e | 2225 | MDL))) |
79a65726 TL |
2226 | log_fatal ("can't allocate expr"); |
2227 | nexp = nexp -> data.pick_first_value.cdr; | |
2228 | } | |
2229 | } while (token == COMMA); | |
2230 | ||
2231 | if (token != RPAREN) | |
2232 | goto norparen; | |
2233 | break; | |
2234 | ||
9fb2fb28 TL |
2235 | /* dns-update and dns-delete are present for historical |
2236 | purposes, but are deprecated in favor of ns-update | |
2237 | in combination with update, delete, exists and not | |
2238 | exists. */ | |
069e9f4c | 2239 | case DNS_UPDATE: |
9fb2fb28 | 2240 | case DNS_DELETE: |
069e9f4c | 2241 | #if !defined (NSUPDATE) |
4615d498 TL |
2242 | parse_warn (cfile, |
2243 | "Please rebuild dhcpd with --with-nsupdate."); | |
069e9f4c | 2244 | #endif |
fdac15d9 | 2245 | token = next_token (&val, cfile); |
9fb2fb28 | 2246 | if (token == DNS_UPDATE) |
f579f39f | 2247 | opcode = expr_ns_add; |
9fb2fb28 TL |
2248 | else |
2249 | opcode = expr_ns_delete; | |
2250 | ||
069e9f4c TL |
2251 | token = next_token (&val, cfile); |
2252 | if (token != LPAREN) | |
2253 | goto nolparen; | |
2254 | ||
9fb2fb28 TL |
2255 | token = next_token (&val, cfile); |
2256 | if (token != STRING) { | |
2257 | parse_warn (cfile, | |
2258 | "parse_expression: expecting string."); | |
2259 | badnsupdate: | |
069e9f4c TL |
2260 | skip_to_semi (cfile); |
2261 | *lose = 1; | |
2262 | return 0; | |
2263 | } | |
9fb2fb28 TL |
2264 | |
2265 | if (!strcasecmp (val, "a")) | |
fdac15d9 | 2266 | i = T_A; |
9fb2fb28 | 2267 | else if (!strcasecmp (val, "ptr")) |
fdac15d9 | 2268 | i = T_PTR; |
9fb2fb28 | 2269 | else if (!strcasecmp (val, "mx")) |
fdac15d9 | 2270 | i = T_MX; |
9fb2fb28 | 2271 | else if (!strcasecmp (val, "cname")) |
fdac15d9 | 2272 | i = T_CNAME; |
9fb2fb28 | 2273 | else if (!strcasecmp (val, "TXT")) |
fdac15d9 | 2274 | i = T_TXT; |
9fb2fb28 TL |
2275 | else { |
2276 | parse_warn (cfile, "unexpected rrtype: %s", val); | |
2277 | goto badnsupdate; | |
2278 | } | |
fdac15d9 | 2279 | |
4bd8800e | 2280 | if (!expression_allocate (expr, MDL)) |
fdac15d9 TL |
2281 | log_fatal ("can't allocate expression"); |
2282 | #if 0 | |
2283 | (*expr) -> op = expr_funcall; | |
2284 | (*expr) -> data.funcall.context = context_boolean; | |
2285 | (*expr) -> data.funcall.name = | |
2286 | ||
2287 | if (!make_let (&(*expr) -> data.funcall.statements, "rrtype")) | |
2288 | log_fatal ("can't allocate rrtype let."); | |
2289 | stmt = (*expr) -> data.funcall.statements; | |
2290 | if (!make_const_int (stmt -> data.let.value, i)) | |
2291 | log_fatal ("can't allocate rrtype value."); | |
069e9f4c TL |
2292 | |
2293 | token = next_token (&val, cfile); | |
2294 | if (token != COMMA) | |
2295 | goto nocomma; | |
2296 | ||
fdac15d9 TL |
2297 | if (!make_let (&stmt -> data.let.statements, "rrname")) |
2298 | log_fatal ("can't allocate rrname let."); | |
2299 | stmt = stmt -> data.let.statements; | |
2300 | if (!(parse_data_expression (&stmt -> data.let.expr, | |
2301 | cfile, lose))) | |
069e9f4c TL |
2302 | goto nodata; |
2303 | ||
2304 | token = next_token (&val, cfile); | |
2305 | if (token != COMMA) | |
2306 | goto nocomma; | |
2307 | ||
fdac15d9 TL |
2308 | if (!make_let (&stmt -> data.let.statements, "rrdata")) |
2309 | log_fatal ("can't allocate rrname let."); | |
2310 | stmt = stmt -> data.let.statements; | |
2311 | if (!(parse_data_expression (&stmt -> data.let.expr, | |
2312 | cfile, lose))) | |
069e9f4c TL |
2313 | goto nodata; |
2314 | ||
f579f39f | 2315 | if (opcode == expr_ns_add) { |
9fb2fb28 TL |
2316 | token = next_token (&val, cfile); |
2317 | if (token != COMMA) | |
2318 | goto nocomma; | |
2319 | ||
fdac15d9 TL |
2320 | if (!make_let (&stmt -> data.let.statements, "ttl")) |
2321 | log_fatal ("can't allocate rrname let."); | |
2322 | stmt = stmt -> data.let.statements; | |
2323 | ||
9fb2fb28 | 2324 | if (!(parse_numeric_expression |
fdac15d9 | 2325 | (&stmt -> data.let.expr, cfile, lose))) { |
9fb2fb28 | 2326 | parse_warn (cfile, |
fdac15d9 | 2327 | "expecting numeric expression."); |
9fb2fb28 TL |
2328 | goto badnsupdate; |
2329 | } | |
069e9f4c | 2330 | } |
fdac15d9 | 2331 | #endif |
069e9f4c TL |
2332 | token = next_token (&val, cfile); |
2333 | if (token != RPAREN) | |
2334 | goto norparen; | |
2335 | break; | |
2336 | ||
9fb2fb28 | 2337 | case NS_UPDATE: |
88886e12 TL |
2338 | #if !defined (NSUPDATE) |
2339 | parse_warn (cfile, | |
2340 | "Please rebuild dhcpd with --with-nsupdate."); | |
2341 | #endif | |
2342 | token = next_token (&val, cfile); | |
4bd8800e | 2343 | if (!expression_allocate (expr, MDL)) |
88886e12 | 2344 | log_fatal ("can't allocate expression"); |
88886e12 TL |
2345 | |
2346 | token = next_token (&val, cfile); | |
2347 | if (token != LPAREN) | |
2348 | goto nolparen; | |
2349 | ||
9fb2fb28 TL |
2350 | nexp = *expr; |
2351 | do { | |
2352 | nexp -> op = expr_dns_transaction; | |
2353 | if (!(parse_dns_expression | |
2354 | (&nexp -> data.dns_transaction.car, | |
2355 | cfile, lose))) | |
2356 | { | |
f579f39f TL |
2357 | if (!*lose) |
2358 | parse_warn | |
2359 | (cfile, | |
2360 | "expecting dns expression."); | |
9fb2fb28 | 2361 | badnstrans: |
4bd8800e | 2362 | expression_dereference (expr, MDL); |
9fb2fb28 TL |
2363 | *lose = 1; |
2364 | return 0; | |
2365 | } | |
2366 | ||
2367 | token = next_token (&val, cfile); | |
2368 | ||
2369 | if (token == COMMA) { | |
2370 | if (!(expression_allocate | |
2371 | (&nexp -> data.dns_transaction.cdr, | |
4bd8800e | 2372 | MDL))) |
9fb2fb28 TL |
2373 | log_fatal |
2374 | ("can't allocate expression"); | |
2375 | nexp = nexp -> data.dns_transaction.cdr; | |
2376 | } | |
2377 | } while (token == COMMA); | |
2378 | ||
2379 | if (token != RPAREN) | |
2380 | goto norparen; | |
2381 | break; | |
2382 | ||
2383 | /* NOT EXISTS is special cased above... */ | |
2384 | not_exists: | |
fdac15d9 TL |
2385 | token = peek_token (&val, cfile); |
2386 | if (token != EXISTS) { | |
2387 | parse_warn (cfile, "expecting DNS prerequisite."); | |
2388 | *lose = 1; | |
2389 | return 0; | |
2390 | } | |
9fb2fb28 TL |
2391 | opcode = expr_ns_not_exists; |
2392 | goto nsupdatecode; | |
f579f39f TL |
2393 | case TOKEN_ADD: |
2394 | opcode = expr_ns_add; | |
9fb2fb28 TL |
2395 | goto nsupdatecode; |
2396 | case TOKEN_DELETE: | |
2397 | opcode = expr_ns_delete; | |
2398 | goto nsupdatecode; | |
2399 | ns_exists: | |
2400 | opcode = expr_ns_exists; | |
2401 | nsupdatecode: | |
2402 | token = next_token (&val, cfile); | |
2403 | ||
2404 | #if !defined (NSUPDATE) | |
2405 | parse_warn (cfile, | |
2406 | "Please rebuild dhcpd with --with-nsupdate."); | |
2407 | #endif | |
4bd8800e | 2408 | if (!expression_allocate (expr, MDL)) |
9fb2fb28 TL |
2409 | log_fatal ("can't allocate expression"); |
2410 | (*expr) -> op = opcode; | |
2411 | ||
2412 | token = next_token (&val, cfile); | |
2413 | if (token != LPAREN) | |
2414 | goto nolparen; | |
2415 | ||
2416 | token = next_token (&val, cfile); | |
2417 | if (!is_identifier (token) && token != NUMBER) { | |
2418 | parse_warn (cfile, "expecting identifier or number."); | |
2419 | badnsop: | |
4bd8800e | 2420 | expression_dereference (expr, MDL); |
88886e12 TL |
2421 | skip_to_semi (cfile); |
2422 | *lose = 1; | |
2423 | return 0; | |
2424 | } | |
9fb2fb28 TL |
2425 | |
2426 | if (token == NUMBER) | |
f579f39f | 2427 | (*expr) -> data.ns_add.rrclass = atoi (val); |
9fb2fb28 | 2428 | else if (!strcasecmp (val, "in")) |
f579f39f | 2429 | (*expr) -> data.ns_add.rrclass = C_IN; |
9fb2fb28 | 2430 | else if (!strcasecmp (val, "chaos")) |
f579f39f | 2431 | (*expr) -> data.ns_add.rrclass = C_CHAOS; |
9fb2fb28 | 2432 | else if (!strcasecmp (val, "hs")) |
f579f39f | 2433 | (*expr) -> data.ns_add.rrclass = C_HS; |
9fb2fb28 TL |
2434 | else { |
2435 | parse_warn (cfile, "unexpected rrclass: %s", val); | |
2436 | goto badnsop; | |
2437 | } | |
2438 | ||
f579f39f TL |
2439 | token = next_token (&val, cfile); |
2440 | if (token != COMMA) | |
2441 | goto nocomma; | |
2442 | ||
9fb2fb28 TL |
2443 | token = next_token (&val, cfile); |
2444 | if (!is_identifier (token) && token != NUMBER) { | |
2445 | parse_warn (cfile, "expecting identifier or number."); | |
2446 | goto badnsop; | |
2447 | } | |
2448 | ||
2449 | if (token == NUMBER) | |
f579f39f | 2450 | (*expr) -> data.ns_add.rrtype = atoi (val); |
9fb2fb28 | 2451 | else if (!strcasecmp (val, "a")) |
f579f39f | 2452 | (*expr) -> data.ns_add.rrtype = T_A; |
9fb2fb28 | 2453 | else if (!strcasecmp (val, "ptr")) |
f579f39f | 2454 | (*expr) -> data.ns_add.rrtype = T_PTR; |
9fb2fb28 | 2455 | else if (!strcasecmp (val, "mx")) |
f579f39f | 2456 | (*expr) -> data.ns_add.rrtype = T_MX; |
9fb2fb28 | 2457 | else if (!strcasecmp (val, "cname")) |
f579f39f | 2458 | (*expr) -> data.ns_add.rrtype = T_CNAME; |
9fb2fb28 | 2459 | else if (!strcasecmp (val, "TXT")) |
f579f39f | 2460 | (*expr) -> data.ns_add.rrtype = T_TXT; |
9fb2fb28 TL |
2461 | else { |
2462 | parse_warn (cfile, "unexpected rrtype: %s", val); | |
2463 | goto badnsop; | |
2464 | } | |
88886e12 TL |
2465 | |
2466 | token = next_token (&val, cfile); | |
2467 | if (token != COMMA) | |
2468 | goto nocomma; | |
2469 | ||
2470 | if (!(parse_data_expression | |
f579f39f | 2471 | (&(*expr) -> data.ns_add.rrname, cfile, lose))) |
88886e12 TL |
2472 | goto nodata; |
2473 | ||
2474 | token = next_token (&val, cfile); | |
2475 | if (token != COMMA) | |
2476 | goto nocomma; | |
2477 | ||
2478 | if (!(parse_data_expression | |
f579f39f | 2479 | (&(*expr) -> data.ns_add.rrdata, cfile, lose))) |
88886e12 TL |
2480 | goto nodata; |
2481 | ||
f579f39f | 2482 | if (opcode == expr_ns_add) { |
9fb2fb28 TL |
2483 | token = next_token (&val, cfile); |
2484 | if (token != COMMA) | |
2485 | goto nocomma; | |
2486 | ||
2487 | if (!(parse_numeric_expression | |
f579f39f TL |
2488 | (&(*expr) -> data.ns_add.ttl, cfile, |
2489 | lose))) { | |
9fb2fb28 TL |
2490 | parse_warn (cfile, |
2491 | "expecting data expression."); | |
2492 | goto badnsupdate; | |
2493 | } | |
2494 | } | |
2495 | ||
88886e12 TL |
2496 | token = next_token (&val, cfile); |
2497 | if (token != RPAREN) | |
2498 | goto norparen; | |
2499 | break; | |
2500 | ||
79a65726 TL |
2501 | case OPTION: |
2502 | case CONFIG_OPTION: | |
4bd8800e | 2503 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 2504 | log_fatal ("can't allocate expression"); |
cd31814f TL |
2505 | (*expr) -> op = (token == OPTION |
2506 | ? expr_option | |
2507 | : expr_config_option); | |
79a65726 | 2508 | token = next_token (&val, cfile); |
b1b7b521 TL |
2509 | known = 0; |
2510 | (*expr) -> data.option = parse_option_name (cfile, 0, &known); | |
02a015fb | 2511 | if (!(*expr) -> data.option) { |
be6be08d | 2512 | *lose = 1; |
4bd8800e | 2513 | expression_dereference (expr, MDL); |
02a015fb | 2514 | return 0; |
be6be08d | 2515 | } |
02a015fb | 2516 | break; |
be6be08d TL |
2517 | |
2518 | case HARDWARE: | |
2519 | token = next_token (&val, cfile); | |
4bd8800e | 2520 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 2521 | log_fatal ("can't allocate expression"); |
02a015fb TL |
2522 | (*expr) -> op = expr_hardware; |
2523 | break; | |
be6be08d | 2524 | |
da38df14 TL |
2525 | case LEASED_ADDRESS: |
2526 | token = next_token (&val, cfile); | |
4bd8800e | 2527 | if (!expression_allocate (expr, MDL)) |
da38df14 TL |
2528 | log_fatal ("can't allocate expression"); |
2529 | (*expr) -> op = expr_leased_address; | |
2530 | break; | |
2531 | ||
fdac15d9 TL |
2532 | case FILENAME: |
2533 | token = next_token (&val, cfile); | |
4bd8800e | 2534 | if (!expression_allocate (expr, MDL)) |
fdac15d9 TL |
2535 | log_fatal ("can't allocate expression"); |
2536 | (*expr) -> op = expr_filename; | |
2537 | break; | |
2538 | ||
2539 | case SERVER_NAME: | |
2540 | token = next_token (&val, cfile); | |
4bd8800e | 2541 | if (!expression_allocate (expr, MDL)) |
fdac15d9 TL |
2542 | log_fatal ("can't allocate expression"); |
2543 | (*expr) -> op = expr_sname; | |
2544 | break; | |
2545 | ||
069e9f4c TL |
2546 | case LEASE_TIME: |
2547 | token = next_token (&val, cfile); | |
4bd8800e | 2548 | if (!expression_allocate (expr, MDL)) |
069e9f4c TL |
2549 | log_fatal ("can't allocate expression"); |
2550 | (*expr) -> op = expr_lease_time; | |
2551 | break; | |
2552 | ||
f579f39f TL |
2553 | case TOKEN_NULL: |
2554 | token = next_token (&val, cfile); | |
4bd8800e | 2555 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
2556 | log_fatal ("can't allocate expression"); |
2557 | (*expr) -> op = expr_null; | |
2558 | break; | |
2559 | ||
79a65726 TL |
2560 | case HOST_DECL_NAME: |
2561 | token = next_token (&val, cfile); | |
4bd8800e | 2562 | if (!expression_allocate (expr, MDL)) |
79a65726 TL |
2563 | log_fatal ("can't allocate expression"); |
2564 | (*expr) -> op = expr_host_decl_name; | |
2565 | break; | |
2566 | ||
846d7d54 | 2567 | case UPDATED_DNS_RR: |
06a8567c | 2568 | token = next_token (&val, cfile); |
06a8567c | 2569 | |
06a8567c | 2570 | token = next_token (&val, cfile); |
846d7d54 TL |
2571 | if (token != LPAREN) |
2572 | goto nolparen; | |
f579f39f TL |
2573 | |
2574 | token = next_token (&val, cfile); | |
2575 | if (token != STRING) { | |
2576 | parse_warn (cfile, "expecting string."); | |
2577 | bad_rrtype: | |
2578 | *lose = 1; | |
2579 | return 0; | |
2580 | } | |
2581 | if (!strcasecmp (val, "a")) | |
2582 | s = "ddns-fwd-name"; | |
2583 | else if (!strcasecmp (val, "ptr")) | |
2584 | s = "ddns-rev-name"; | |
2585 | else { | |
2586 | parse_warn (cfile, "invalid DNS rrtype: %s", val); | |
2587 | goto bad_rrtype; | |
2588 | } | |
846d7d54 TL |
2589 | |
2590 | token = next_token (&val, cfile); | |
2591 | if (token != RPAREN) | |
2592 | goto norparen; | |
2593 | ||
4bd8800e | 2594 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
2595 | log_fatal ("can't allocate expression"); |
2596 | (*expr) -> op = expr_variable_reference; | |
2597 | (*expr) -> data.variable = | |
fdac15d9 | 2598 | dmalloc (strlen (s) + 1, MDL); |
f579f39f TL |
2599 | if (!(*expr) -> data.variable) |
2600 | log_fatal ("can't allocate variable name."); | |
2601 | strcpy ((*expr) -> data.variable, s); | |
06a8567c TL |
2602 | break; |
2603 | ||
be6be08d TL |
2604 | case PACKET: |
2605 | token = next_token (&val, cfile); | |
4bd8800e | 2606 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 2607 | log_fatal ("can't allocate expression"); |
02a015fb | 2608 | (*expr) -> op = expr_packet; |
be6be08d TL |
2609 | |
2610 | token = next_token (&val, cfile); | |
2611 | if (token != LPAREN) | |
2612 | goto nolparen; | |
2613 | ||
02a015fb TL |
2614 | if (!parse_numeric_expression (&(*expr) -> data.packet.offset, |
2615 | cfile, lose)) | |
be6be08d TL |
2616 | goto nonum; |
2617 | ||
2618 | token = next_token (&val, cfile); | |
2619 | if (token != COMMA) | |
2620 | goto nocomma; | |
2621 | ||
02a015fb TL |
2622 | if (!parse_numeric_expression (&(*expr) -> data.packet.len, |
2623 | cfile, lose)) | |
be6be08d TL |
2624 | goto nonum; |
2625 | ||
2626 | token = next_token (&val, cfile); | |
2627 | if (token != RPAREN) | |
2628 | goto norparen; | |
02a015fb | 2629 | break; |
be6be08d TL |
2630 | |
2631 | case STRING: | |
2632 | token = next_token (&val, cfile); | |
b1b7b521 | 2633 | if (!make_const_data (expr, (const unsigned char *)val, |
c5b0f529 | 2634 | strlen (val), 1, 1)) |
8ae2d595 | 2635 | log_fatal ("can't make constant string expression."); |
02a015fb | 2636 | break; |
be6be08d | 2637 | |
be6be08d TL |
2638 | case EXTRACT_INT: |
2639 | token = next_token (&val, cfile); | |
be6be08d TL |
2640 | token = next_token (&val, cfile); |
2641 | if (token != LPAREN) { | |
4615d498 | 2642 | parse_warn (cfile, "left parenthesis expected."); |
be6be08d | 2643 | *lose = 1; |
02a015fb | 2644 | return 0; |
be6be08d TL |
2645 | } |
2646 | ||
4bd8800e | 2647 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 2648 | log_fatal ("can't allocate expression"); |
02a015fb TL |
2649 | |
2650 | if (!parse_data_expression (&(*expr) -> data.extract_int, | |
2651 | cfile, lose)) { | |
4615d498 | 2652 | parse_warn (cfile, "expecting data expression."); |
be6be08d TL |
2653 | skip_to_semi (cfile); |
2654 | *lose = 1; | |
4bd8800e | 2655 | expression_dereference (expr, MDL); |
02a015fb | 2656 | return 0; |
be6be08d TL |
2657 | } |
2658 | ||
2659 | token = next_token (&val, cfile); | |
2660 | if (token != COMMA) { | |
4615d498 | 2661 | parse_warn (cfile, "comma expected."); |
be6be08d | 2662 | *lose = 1; |
4bd8800e | 2663 | expression_dereference (expr, MDL); |
02a015fb | 2664 | return 0; |
be6be08d TL |
2665 | } |
2666 | ||
2667 | token = next_token (&val, cfile); | |
2668 | if (token != NUMBER) { | |
4615d498 | 2669 | parse_warn (cfile, "number expected."); |
be6be08d | 2670 | *lose = 1; |
4bd8800e | 2671 | expression_dereference (expr, MDL); |
02a015fb | 2672 | return 0; |
be6be08d | 2673 | } |
be6be08d TL |
2674 | switch (atoi (val)) { |
2675 | case 8: | |
02a015fb | 2676 | (*expr) -> op = expr_extract_int8; |
be6be08d TL |
2677 | break; |
2678 | ||
2679 | case 16: | |
02a015fb | 2680 | (*expr) -> op = expr_extract_int16; |
be6be08d TL |
2681 | break; |
2682 | ||
2683 | case 32: | |
02a015fb | 2684 | (*expr) -> op = expr_extract_int32; |
be6be08d TL |
2685 | break; |
2686 | ||
2687 | default: | |
4615d498 TL |
2688 | parse_warn (cfile, |
2689 | "unsupported integer size %d", atoi (val)); | |
be6be08d TL |
2690 | *lose = 1; |
2691 | skip_to_semi (cfile); | |
4bd8800e | 2692 | expression_dereference (expr, MDL); |
02a015fb | 2693 | return 0; |
be6be08d TL |
2694 | } |
2695 | ||
2696 | token = next_token (&val, cfile); | |
2697 | if (token != RPAREN) { | |
4615d498 | 2698 | parse_warn (cfile, "right parenthesis expected."); |
be6be08d | 2699 | *lose = 1; |
4bd8800e | 2700 | expression_dereference (expr, MDL); |
02a015fb | 2701 | return 0; |
be6be08d | 2702 | } |
02a015fb | 2703 | break; |
be6be08d | 2704 | |
20c4e94d TL |
2705 | case ENCODE_INT: |
2706 | token = next_token (&val, cfile); | |
2707 | token = next_token (&val, cfile); | |
2708 | if (token != LPAREN) { | |
4615d498 | 2709 | parse_warn (cfile, "left parenthesis expected."); |
20c4e94d TL |
2710 | *lose = 1; |
2711 | return 0; | |
2712 | } | |
2713 | ||
4bd8800e | 2714 | if (!expression_allocate (expr, MDL)) |
20c4e94d TL |
2715 | log_fatal ("can't allocate expression"); |
2716 | ||
2717 | if (!parse_numeric_expression (&(*expr) -> data.encode_int, | |
2718 | cfile, lose)) { | |
4615d498 | 2719 | parse_warn (cfile, "expecting numeric expression."); |
20c4e94d TL |
2720 | skip_to_semi (cfile); |
2721 | *lose = 1; | |
4bd8800e | 2722 | expression_dereference (expr, MDL); |
20c4e94d TL |
2723 | return 0; |
2724 | } | |
2725 | ||
2726 | token = next_token (&val, cfile); | |
2727 | if (token != COMMA) { | |
4615d498 | 2728 | parse_warn (cfile, "comma expected."); |
20c4e94d | 2729 | *lose = 1; |
4bd8800e | 2730 | expression_dereference (expr, MDL); |
20c4e94d TL |
2731 | return 0; |
2732 | } | |
2733 | ||
2734 | token = next_token (&val, cfile); | |
2735 | if (token != NUMBER) { | |
4615d498 | 2736 | parse_warn (cfile, "number expected."); |
20c4e94d | 2737 | *lose = 1; |
4bd8800e | 2738 | expression_dereference (expr, MDL); |
20c4e94d TL |
2739 | return 0; |
2740 | } | |
2741 | switch (atoi (val)) { | |
2742 | case 8: | |
2743 | (*expr) -> op = expr_encode_int8; | |
2744 | break; | |
2745 | ||
2746 | case 16: | |
2747 | (*expr) -> op = expr_encode_int16; | |
2748 | break; | |
2749 | ||
2750 | case 32: | |
2751 | (*expr) -> op = expr_encode_int32; | |
2752 | break; | |
2753 | ||
2754 | default: | |
4615d498 TL |
2755 | parse_warn (cfile, |
2756 | "unsupported integer size %d", atoi (val)); | |
20c4e94d TL |
2757 | *lose = 1; |
2758 | skip_to_semi (cfile); | |
4bd8800e | 2759 | expression_dereference (expr, MDL); |
20c4e94d TL |
2760 | return 0; |
2761 | } | |
2762 | ||
2763 | token = next_token (&val, cfile); | |
2764 | if (token != RPAREN) { | |
4615d498 | 2765 | parse_warn (cfile, "right parenthesis expected."); |
20c4e94d | 2766 | *lose = 1; |
4bd8800e | 2767 | expression_dereference (expr, MDL); |
20c4e94d TL |
2768 | return 0; |
2769 | } | |
2770 | break; | |
2771 | ||
be6be08d | 2772 | case NUMBER: |
02a015fb TL |
2773 | /* If we're in a numeric context, this should just be a |
2774 | number, by itself. */ | |
f579f39f TL |
2775 | if (context == context_numeric || |
2776 | context == context_data_or_numeric) { | |
02a015fb | 2777 | next_token (&val, cfile); /* Eat the number. */ |
4bd8800e | 2778 | if (!expression_allocate (expr, MDL)) |
be19167d | 2779 | log_fatal ("can't allocate expression"); |
02a015fb TL |
2780 | (*expr) -> op = expr_const_int; |
2781 | (*expr) -> data.const_int = atoi (val); | |
2782 | break; | |
2783 | } | |
be6be08d | 2784 | |
02a015fb | 2785 | case NUMBER_OR_NAME: |
4bd8800e | 2786 | if (!expression_allocate (expr, MDL)) |
be19167d TL |
2787 | log_fatal ("can't allocate expression"); |
2788 | ||
02a015fb TL |
2789 | (*expr) -> op = expr_const_data; |
2790 | if (!parse_cshl (&(*expr) -> data.const_data, cfile)) { | |
4bd8800e | 2791 | expression_dereference (expr, MDL); |
02a015fb TL |
2792 | return 0; |
2793 | } | |
2794 | break; | |
2795 | ||
f579f39f TL |
2796 | case NS_FORMERR: |
2797 | known = FORMERR; | |
2798 | ns_const: | |
2799 | token = next_token (&val, cfile); | |
4bd8800e | 2800 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
2801 | log_fatal ("can't allocate expression"); |
2802 | (*expr) -> op = expr_const_int; | |
2803 | (*expr) -> data.const_int = known; | |
2804 | break; | |
2805 | ||
2806 | case NS_NOERROR: | |
2807 | known = NOERROR; | |
2808 | goto ns_const; | |
2809 | ||
2810 | case NS_NOTAUTH: | |
2811 | known = NOTAUTH; | |
2812 | goto ns_const; | |
2813 | ||
2814 | case NS_NOTIMP: | |
2815 | known = NOTIMP; | |
2816 | goto ns_const; | |
2817 | ||
2818 | case NS_NOTZONE: | |
2819 | known = NOTZONE; | |
2820 | goto ns_const; | |
2821 | ||
2822 | case NS_NXDOMAIN: | |
2823 | known = NXDOMAIN; | |
2824 | goto ns_const; | |
2825 | ||
2826 | case NS_NXRRSET: | |
2827 | known = NXRRSET; | |
2828 | goto ns_const; | |
2829 | ||
2830 | case NS_REFUSED: | |
2831 | known = REFUSED; | |
2832 | goto ns_const; | |
2833 | ||
2834 | case NS_SERVFAIL: | |
2835 | known = SERVFAIL; | |
2836 | goto ns_const; | |
2837 | ||
2838 | case NS_YXDOMAIN: | |
2839 | known = YXDOMAIN; | |
2840 | goto ns_const; | |
2841 | ||
2842 | case NS_YXRRSET: | |
2843 | known = YXRRSET; | |
2844 | goto ns_const; | |
2845 | ||
2846 | case DEFINED: | |
2847 | token = next_token (&val, cfile); | |
2848 | token = next_token (&val, cfile); | |
2849 | if (token != LPAREN) | |
2850 | goto nolparen; | |
2851 | ||
2852 | token = next_token (&val, cfile); | |
2853 | if (token != NAME && token != NUMBER_OR_NAME) { | |
2854 | parse_warn (cfile, "%s can't be a variable name", val); | |
2855 | skip_to_semi (cfile); | |
2856 | *lose = 1; | |
2857 | return 0; | |
2858 | } | |
2859 | ||
4bd8800e | 2860 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
2861 | log_fatal ("can't allocate expression"); |
2862 | (*expr) -> op = expr_variable_exists; | |
fdac15d9 | 2863 | (*expr) -> data.variable = dmalloc (strlen (val) + 1, MDL); |
f579f39f TL |
2864 | if (!(*expr)->data.variable) |
2865 | log_fatal ("can't allocate variable name"); | |
2866 | strcpy ((*expr) -> data.variable, val); | |
2867 | token = next_token (&val, cfile); | |
2868 | if (token != RPAREN) | |
2869 | goto norparen; | |
2870 | break; | |
2871 | ||
02a015fb | 2872 | /* Not a valid start to an expression... */ |
be6be08d | 2873 | default: |
f579f39f TL |
2874 | if (token != NAME && token != NUMBER_OR_NAME) |
2875 | return 0; | |
2876 | ||
2877 | token = next_token (&val, cfile); | |
4bd8800e | 2878 | if (!expression_allocate (expr, MDL)) |
f579f39f TL |
2879 | log_fatal ("can't allocate expression"); |
2880 | (*expr) -> op = expr_variable_reference; | |
fdac15d9 | 2881 | (*expr) -> data.variable = dmalloc (strlen (val) + 1, MDL); |
f579f39f TL |
2882 | if (!(*expr)->data.variable) |
2883 | log_fatal ("can't allocate variable name"); | |
2884 | strcpy ((*expr) -> data.variable, val); | |
2885 | break; | |
be6be08d | 2886 | } |
02a015fb | 2887 | return 1; |
be6be08d TL |
2888 | } |
2889 | ||
02a015fb TL |
2890 | /* Parse an expression. */ |
2891 | ||
2892 | int parse_expression (expr, cfile, lose, context, plhs, binop) | |
2893 | struct expression **expr; | |
4615d498 | 2894 | struct parse *cfile; |
02a015fb TL |
2895 | int *lose; |
2896 | enum expression_context context; | |
2897 | struct expression **plhs; | |
2898 | enum expr_op binop; | |
2899 | { | |
2900 | enum dhcp_token token; | |
b1b7b521 | 2901 | const char *val; |
02a015fb TL |
2902 | struct expression *rhs = (struct expression *)0, *tmp; |
2903 | struct expression *lhs; | |
2904 | enum expr_op next_op; | |
2905 | ||
2906 | /* Consume the left hand side we were passed. */ | |
2907 | if (plhs) { | |
2908 | lhs = *plhs; | |
2909 | *plhs = (struct expression *)0; | |
2910 | } else | |
2911 | lhs = (struct expression *)0; | |
2912 | ||
2913 | new_rhs: | |
2914 | if (!parse_non_binary (&rhs, cfile, lose, context)) { | |
2915 | /* If we already have a left-hand side, then it's not | |
2916 | okay for there not to be a right-hand side here, so | |
2917 | we need to flag it as an error. */ | |
2918 | if (lhs) { | |
2919 | if (!*lose) { | |
4615d498 TL |
2920 | parse_warn (cfile, |
2921 | "expecting right-hand side."); | |
02a015fb TL |
2922 | *lose = 1; |
2923 | skip_to_semi (cfile); | |
2924 | } | |
4bd8800e | 2925 | expression_dereference (&lhs, MDL); |
02a015fb TL |
2926 | } |
2927 | return 0; | |
2928 | } | |
2929 | ||
2930 | /* At this point, rhs contains either an entire subexpression, | |
2931 | or at least a left-hand-side. If we do not see a binary token | |
2932 | as the next token, we're done with the expression. */ | |
2933 | ||
2934 | token = peek_token (&val, cfile); | |
2935 | switch (token) { | |
2b965a44 TL |
2936 | case BANG: |
2937 | token = next_token (&val, cfile); | |
2938 | token = peek_token (&val, cfile); | |
2939 | if (token != EQUAL) { | |
2940 | parse_warn (cfile, "! in boolean context without ="); | |
2941 | *lose = 1; | |
2942 | skip_to_semi (cfile); | |
2943 | if (lhs) | |
4bd8800e | 2944 | expression_dereference (&lhs, MDL); |
2b965a44 TL |
2945 | return 0; |
2946 | } | |
2947 | next_op = expr_not_equal; | |
2948 | break; | |
2949 | ||
02a015fb TL |
2950 | case EQUAL: |
2951 | next_op = expr_equal; | |
2952 | break; | |
2953 | ||
2954 | case AND: | |
2955 | next_op = expr_and; | |
2956 | break; | |
2957 | ||
2958 | case OR: | |
2959 | next_op = expr_or; | |
2960 | break; | |
2961 | ||
2962 | default: | |
2963 | next_op = expr_none; | |
2964 | } | |
2965 | ||
2966 | /* If we have no lhs yet, we just parsed it. */ | |
2967 | if (!lhs) { | |
2968 | /* If there was no operator following what we just parsed, | |
2969 | then we're done - return it. */ | |
2970 | if (next_op == expr_none) { | |
2971 | *expr = rhs; | |
2972 | return 1; | |
2973 | } | |
2974 | lhs = rhs; | |
2975 | rhs = (struct expression *)0; | |
2976 | binop = next_op; | |
2977 | next_token (&val, cfile); /* Consume the operator. */ | |
2978 | goto new_rhs; | |
2979 | } | |
2980 | ||
2981 | /* Now, if we didn't find a binary operator, we're done parsing | |
2982 | this subexpression, so combine it with the preceding binary | |
2983 | operator and return the result. */ | |
2984 | if (next_op == expr_none) { | |
4bd8800e | 2985 | if (!expression_allocate (expr, MDL)) |
8ae2d595 | 2986 | log_fatal ("Can't allocate expression!"); |
02a015fb TL |
2987 | |
2988 | (*expr) -> op = binop; | |
2989 | /* All the binary operators' data union members | |
2990 | are the same, so we'll cheat and use the member | |
2991 | for the equals operator. */ | |
2992 | (*expr) -> data.equal [0] = lhs; | |
2993 | (*expr) -> data.equal [1] = rhs; | |
2994 | return 1; | |
2995 | } | |
2996 | ||
2997 | /* Eat the operator token - we now know it was a binary operator... */ | |
2998 | token = next_token (&val, cfile); | |
2999 | ||
3000 | /* If the binary operator we saw previously has a lower precedence | |
3001 | than the next operator, then the rhs we just parsed for that | |
3002 | operator is actually the lhs of the operator with the higher | |
3003 | precedence - to get the real rhs, we need to recurse on the | |
3004 | new operator. */ | |
3005 | if (binop != expr_none && | |
3006 | op_precedence (binop, next_op) < 0) { | |
3007 | tmp = rhs; | |
3008 | rhs = (struct expression *)0; | |
3009 | if (!parse_expression (&rhs, cfile, lose, op_context (next_op), | |
3010 | &tmp, next_op)) { | |
3011 | if (!*lose) { | |
4615d498 TL |
3012 | parse_warn (cfile, |
3013 | "expecting a subexpression"); | |
02a015fb TL |
3014 | *lose = 1; |
3015 | } | |
3016 | return 0; | |
3017 | } | |
3018 | next_op = expr_none; | |
3019 | } | |
3020 | ||
3021 | /* Now combine the LHS and the RHS using binop. */ | |
3022 | tmp = (struct expression *)0; | |
4bd8800e | 3023 | if (!expression_allocate (&tmp, MDL)) |
8ae2d595 | 3024 | log_fatal ("No memory for equal precedence combination."); |
02a015fb TL |
3025 | |
3026 | /* Store the LHS and RHS. */ | |
3027 | tmp -> data.equal [0] = lhs; | |
3028 | tmp -> data.equal [1] = rhs; | |
3029 | tmp -> op = binop; | |
3030 | ||
3031 | lhs = tmp; | |
3032 | tmp = (struct expression *)0; | |
3033 | rhs = (struct expression *)0; | |
3034 | ||
3035 | /* Recursions don't return until we have parsed the end of the | |
3036 | expression, so if we recursed earlier, we can now return what | |
3037 | we got. */ | |
3038 | if (next_op == expr_none) { | |
3039 | *expr = lhs; | |
3040 | return 1; | |
3041 | } | |
3042 | ||
3043 | binop = next_op; | |
3044 | goto new_rhs; | |
3045 | } | |
3046 | ||
be6be08d TL |
3047 | /* option-statement :== identifier DOT identifier <syntax> SEMI |
3048 | | identifier <syntax> SEMI | |
3049 | ||
3050 | Option syntax is handled specially through format strings, so it | |
3051 | would be painful to come up with BNF for it. However, it always | |
3052 | starts as above and ends in a SEMI. */ | |
3053 | ||
79a65726 TL |
3054 | int parse_option_statement (result, cfile, lookups, option, op) |
3055 | struct executable_statement **result; | |
4615d498 | 3056 | struct parse *cfile; |
be6be08d TL |
3057 | int lookups; |
3058 | struct option *option; | |
3059 | enum statement_op op; | |
3060 | { | |
b1b7b521 | 3061 | const char *val; |
02a015fb | 3062 | enum dhcp_token token; |
b1b7b521 | 3063 | const char *fmt; |
be6be08d | 3064 | struct expression *expr = (struct expression *)0; |
02a015fb | 3065 | struct expression *tmp; |
be6be08d TL |
3066 | int lose; |
3067 | struct executable_statement *stmt; | |
02a015fb | 3068 | int ftt = 1; |
be6be08d TL |
3069 | |
3070 | token = peek_token (&val, cfile); | |
3071 | if (token == SEMI) { | |
3072 | /* Eat the semicolon... */ | |
3073 | token = next_token (&val, cfile); | |
be6be08d TL |
3074 | goto done; |
3075 | } | |
3076 | ||
a82abfc7 TL |
3077 | if (token == EQUAL) { |
3078 | /* Eat the equals sign. */ | |
3079 | token = next_token (&val, cfile); | |
3080 | ||
3081 | /* Parse a data expression and use its value for the data. */ | |
3082 | if (!parse_data_expression (&expr, cfile, &lose)) { | |
3083 | /* In this context, we must have an executable | |
3084 | statement, so if we found something else, it's | |
3085 | still an error. */ | |
3086 | if (!lose) { | |
4615d498 TL |
3087 | parse_warn (cfile, |
3088 | "expecting a data expression."); | |
a82abfc7 TL |
3089 | skip_to_semi (cfile); |
3090 | } | |
79a65726 | 3091 | return 0; |
a82abfc7 TL |
3092 | } |
3093 | ||
3094 | /* We got a valid expression, so use it. */ | |
3095 | goto done; | |
3096 | } | |
3097 | ||
be6be08d TL |
3098 | /* Parse the option data... */ |
3099 | do { | |
3100 | /* Set a flag if this is an array of a simple type (i.e., | |
3101 | not an array of pairs of IP addresses, or something | |
3102 | like that. */ | |
3103 | int uniform = option -> format [1] == 'A'; | |
3104 | ||
3105 | for (fmt = option -> format; *fmt; fmt++) { | |
3106 | if (*fmt == 'A') | |
3107 | break; | |
02a015fb | 3108 | tmp = expr; |
44aa67f6 | 3109 | expr = (struct expression *)0; |
02a015fb TL |
3110 | if (!parse_option_token (&expr, cfile, fmt, |
3111 | tmp, uniform, lookups)) { | |
4615d498 | 3112 | if (tmp) |
4bd8800e | 3113 | expression_dereference (&tmp, MDL); |
79a65726 | 3114 | return 0; |
02a015fb TL |
3115 | } |
3116 | if (tmp) | |
4bd8800e | 3117 | expression_dereference (&tmp, MDL); |
be6be08d TL |
3118 | } |
3119 | if (*fmt == 'A') { | |
3120 | token = peek_token (&val, cfile); | |
3121 | if (token == COMMA) { | |
3122 | token = next_token (&val, cfile); | |
3123 | continue; | |
3124 | } | |
3125 | break; | |
3126 | } | |
3127 | } while (*fmt == 'A'); | |
3128 | ||
3129 | done: | |
25541f2f | 3130 | if (!parse_semi (cfile)) |
79a65726 | 3131 | return 0; |
4bd8800e | 3132 | if (!executable_statement_allocate (result, MDL)) |
79a65726 TL |
3133 | log_fatal ("no memory for option statement."); |
3134 | (*result) -> op = op; | |
3135 | if (expr && !option_cache (&(*result) -> data.option, | |
02a015fb | 3136 | (struct data_string *)0, expr, option)) |
52c9d530 | 3137 | log_fatal ("no memory for option cache"); |
79a65726 | 3138 | return 1; |
be6be08d TL |
3139 | } |
3140 | ||
02a015fb TL |
3141 | int parse_option_token (rv, cfile, fmt, expr, uniform, lookups) |
3142 | struct expression **rv; | |
4615d498 | 3143 | struct parse *cfile; |
b1b7b521 | 3144 | const char *fmt; |
be6be08d TL |
3145 | struct expression *expr; |
3146 | int uniform; | |
3147 | int lookups; | |
3148 | { | |
b1b7b521 | 3149 | const char *val; |
02a015fb TL |
3150 | enum dhcp_token token; |
3151 | struct expression *t = (struct expression *)0; | |
be6be08d TL |
3152 | unsigned char buf [4]; |
3153 | int len; | |
3154 | unsigned char *ob; | |
3155 | struct iaddr addr; | |
fdac15d9 | 3156 | int num; |
be6be08d TL |
3157 | |
3158 | switch (*fmt) { | |
52c9d530 TL |
3159 | case 'U': |
3160 | token = next_token (&val, cfile); | |
3161 | if (!is_identifier (token)) { | |
4615d498 | 3162 | parse_warn (cfile, "expecting identifier."); |
52c9d530 TL |
3163 | skip_to_semi (cfile); |
3164 | return 0; | |
3165 | } | |
b1b7b521 | 3166 | if (!make_const_data (&t, (const unsigned char *)val, |
52c9d530 TL |
3167 | strlen (val), 1, 1)) |
3168 | log_fatal ("No memory for %s", val); | |
3169 | break; | |
3170 | ||
be6be08d TL |
3171 | case 'X': |
3172 | token = peek_token (&val, cfile); | |
3173 | if (token == NUMBER_OR_NAME || token == NUMBER) { | |
4bd8800e | 3174 | if (!expression_allocate (&t, MDL)) |
02a015fb | 3175 | return 0; |
8cc4d857 | 3176 | if (!parse_cshl (&t -> data.const_data, cfile)) { |
4bd8800e | 3177 | expression_dereference (&t, MDL); |
01e20b9e | 3178 | return 0; |
8cc4d857 | 3179 | } |
efc79acb | 3180 | t -> op = expr_const_data; |
be6be08d TL |
3181 | } else if (token == STRING) { |
3182 | token = next_token (&val, cfile); | |
b1b7b521 | 3183 | if (!make_const_data (&t, (const unsigned char *)val, |
02a015fb | 3184 | strlen (val), 1, 1)) |
52c9d530 | 3185 | log_fatal ("No memory for \"%s\"", val); |
be6be08d | 3186 | } else { |
4615d498 | 3187 | parse_warn (cfile, "expecting string %s.", |
be6be08d TL |
3188 | "or hexadecimal data"); |
3189 | skip_to_semi (cfile); | |
02a015fb | 3190 | return 0; |
be6be08d TL |
3191 | } |
3192 | break; | |
3193 | ||
3194 | case 't': /* Text string... */ | |
3195 | token = next_token (&val, cfile); | |
3196 | if (token != STRING && !is_identifier (token)) { | |
4615d498 | 3197 | parse_warn (cfile, "expecting string."); |
be6be08d TL |
3198 | if (token != SEMI) |
3199 | skip_to_semi (cfile); | |
02a015fb | 3200 | return 0; |
be6be08d | 3201 | } |
b1b7b521 | 3202 | if (!make_const_data (&t, (const unsigned char *)val, |
02a015fb | 3203 | strlen (val), 1, 1)) |
8ae2d595 | 3204 | log_fatal ("No memory for concatenation"); |
be6be08d TL |
3205 | break; |
3206 | ||
3207 | case 'I': /* IP address or hostname. */ | |
02a015fb TL |
3208 | if (lookups) { |
3209 | if (!parse_ip_addr_or_hostname (&t, cfile, uniform)) | |
3210 | return 0; | |
3211 | } else { | |
be6be08d | 3212 | if (!parse_ip_addr (cfile, &addr)) |
02a015fb TL |
3213 | return 0; |
3214 | if (!make_const_data (&t, addr.iabuf, addr.len, 0, 1)) | |
3215 | return 0; | |
be6be08d | 3216 | } |
be6be08d TL |
3217 | break; |
3218 | ||
fdac15d9 TL |
3219 | case 'T': /* Lease interval. */ |
3220 | token = next_token (&val, cfile); | |
3221 | if (token != INFINITE) | |
3222 | goto check_number; | |
3223 | putLong (buf, -1); | |
3224 | if (!make_const_data (&t, buf, 4, 0, 1)) | |
3225 | return 0; | |
3226 | break; | |
3227 | ||
be6be08d TL |
3228 | case 'L': /* Unsigned 32-bit integer... */ |
3229 | case 'l': /* Signed 32-bit integer... */ | |
3230 | token = next_token (&val, cfile); | |
fdac15d9 | 3231 | check_number: |
be6be08d TL |
3232 | if (token != NUMBER) { |
3233 | need_number: | |
4615d498 | 3234 | parse_warn (cfile, "expecting number."); |
be6be08d TL |
3235 | if (token != SEMI) |
3236 | skip_to_semi (cfile); | |
02a015fb | 3237 | return 0; |
be6be08d | 3238 | } |
4615d498 | 3239 | convert_num (cfile, buf, val, 0, 32); |
02a015fb TL |
3240 | if (!make_const_data (&t, buf, 4, 0, 1)) |
3241 | return 0; | |
be6be08d | 3242 | break; |
02a015fb | 3243 | |
be6be08d TL |
3244 | case 's': /* Signed 16-bit integer. */ |
3245 | case 'S': /* Unsigned 16-bit integer. */ | |
3246 | token = next_token (&val, cfile); | |
3247 | if (token != NUMBER) | |
3248 | goto need_number; | |
4615d498 | 3249 | convert_num (cfile, buf, val, 0, 16); |
02a015fb TL |
3250 | if (!make_const_data (&t, buf, 2, 0, 1)) |
3251 | return 0; | |
be6be08d | 3252 | break; |
02a015fb | 3253 | |
be6be08d TL |
3254 | case 'b': /* Signed 8-bit integer. */ |
3255 | case 'B': /* Unsigned 8-bit integer. */ | |
3256 | token = next_token (&val, cfile); | |
3257 | if (token != NUMBER) | |
3258 | goto need_number; | |
4615d498 | 3259 | convert_num (cfile, buf, val, 0, 8); |
02a015fb TL |
3260 | if (!make_const_data (&t, buf, 1, 0, 1)) |
3261 | return 0; | |
be6be08d | 3262 | break; |
02a015fb | 3263 | |
be6be08d TL |
3264 | case 'f': /* Boolean flag. */ |
3265 | token = next_token (&val, cfile); | |
3266 | if (!is_identifier (token)) { | |
4615d498 | 3267 | parse_warn (cfile, "expecting identifier."); |
be6be08d TL |
3268 | bad_flag: |
3269 | if (token != SEMI) | |
3270 | skip_to_semi (cfile); | |
02a015fb | 3271 | return 0; |
be6be08d TL |
3272 | } |
3273 | if (!strcasecmp (val, "true") | |
3274 | || !strcasecmp (val, "on")) | |
3275 | buf [0] = 1; | |
3276 | else if (!strcasecmp (val, "false") | |
3277 | || !strcasecmp (val, "off")) | |
3278 | buf [0] = 0; | |
0776fd12 TL |
3279 | else if (!strcasecmp (val, "ignore")) |
3280 | buf [0] = 2; | |
be6be08d | 3281 | else { |
4615d498 | 3282 | parse_warn (cfile, "expecting boolean."); |
be6be08d TL |
3283 | goto bad_flag; |
3284 | } | |
02a015fb TL |
3285 | if (!make_const_data (&t, buf, 1, 0, 1)) |
3286 | return 0; | |
be6be08d | 3287 | break; |
02a015fb | 3288 | |
be6be08d | 3289 | default: |
4615d498 | 3290 | parse_warn (cfile, "Bad format %c in parse_option_param.", |
f420e08c | 3291 | *fmt); |
be6be08d | 3292 | skip_to_semi (cfile); |
02a015fb | 3293 | return 0; |
be6be08d | 3294 | } |
02a015fb TL |
3295 | if (expr) { |
3296 | if (!make_concat (rv, expr, t)) | |
3297 | return 0; | |
4bd8800e | 3298 | expression_dereference (&t, MDL); |
02a015fb TL |
3299 | } else |
3300 | *rv = t; | |
3301 | return 1; | |
be6be08d | 3302 | } |
74f45f96 TL |
3303 | |
3304 | int parse_auth_key (key_id, cfile) | |
3305 | struct data_string *key_id; | |
4615d498 | 3306 | struct parse *cfile; |
74f45f96 TL |
3307 | { |
3308 | struct data_string key_data; | |
b1b7b521 | 3309 | const char *val; |
74f45f96 | 3310 | enum dhcp_token token; |
b1b7b521 TL |
3311 | const struct auth_key *key, *old_key = (struct auth_key *)0; |
3312 | struct auth_key *new_key; | |
74f45f96 TL |
3313 | |
3314 | memset (&key_data, 0, sizeof key_data); | |
3315 | ||
3316 | if (!parse_cshl (key_id, cfile)) | |
3317 | return 0; | |
3318 | ||
3319 | key = auth_key_lookup (key_id); | |
3320 | ||
3321 | token = peek_token (&val, cfile); | |
3322 | if (token == SEMI) { | |
3323 | if (!key) | |
4615d498 | 3324 | parse_warn (cfile, "reference to undefined key %s", |
74f45f96 TL |
3325 | print_hex_1 (key_id -> len, |
3326 | key_id -> data, | |
3327 | key_id -> len)); | |
4bd8800e | 3328 | data_string_forget (key_id, MDL); |
74f45f96 TL |
3329 | } else { |
3330 | if (!parse_cshl (&key_data, cfile)) | |
3331 | return 0; | |
3332 | if (key) { | |
4615d498 | 3333 | parse_warn (cfile, "redefinition of key %s", |
74f45f96 TL |
3334 | print_hex_1 (key_id -> len, |
3335 | key_id -> data, | |
3336 | key_id -> len)); | |
3337 | old_key = key; | |
3338 | } | |
4bd8800e | 3339 | new_key = new_auth_key (key_data.len, MDL); |
b1b7b521 | 3340 | if (!new_key) |
74f45f96 TL |
3341 | log_fatal ("No memory for key %s", |
3342 | print_hex_1 (key_id -> len, | |
3343 | key_id -> data, | |
3344 | key_id -> len)); | |
b1b7b521 TL |
3345 | new_key -> length = key_data.len; |
3346 | memcpy (new_key -> data, key_data.data, key_data.len); | |
3347 | enter_auth_key (key_id, new_key); | |
4bd8800e | 3348 | data_string_forget (&key_data, MDL); |
74f45f96 TL |
3349 | } |
3350 | ||
3351 | parse_semi (cfile); | |
3352 | return key_id -> len ? 1 : 0; | |
3353 | } | |
4bd8800e TL |
3354 | |
3355 | int parse_warn (ANSI_DECL (struct parse *)cfile, | |
3356 | ANSI_DECL (const char *) fmt, VA_DOTDOTDOT) | |
3357 | KandR (struct parse *cfile;) | |
3358 | KandR (char *fmt;) | |
3359 | va_dcl | |
3360 | { | |
3361 | va_list list; | |
3362 | static char spaces [] = " "; | |
3363 | char lexbuf [256]; | |
3364 | char mbuf [1024]; | |
3365 | char fbuf [1024]; | |
3366 | unsigned i, lix; | |
3367 | ||
3368 | do_percentm (mbuf, fmt); | |
3369 | #ifndef NO_SNPRINTF | |
3370 | snprintf (fbuf, sizeof fbuf, "%s line %d: %s", | |
3371 | cfile -> tlname, cfile -> lexline, mbuf); | |
3372 | #else | |
3373 | sprintf (fbuf, "%s line %d: %s", | |
3374 | cfile -> tlname, cfile -> lexline, mbuf); | |
3375 | #endif | |
3376 | ||
3377 | VA_start (list, fmt); | |
3378 | vsnprintf (mbuf, sizeof mbuf, fbuf, list); | |
3379 | va_end (list); | |
3380 | ||
3381 | lix = 0; | |
3382 | for (i = 0; | |
3383 | cfile -> token_line [i] && i < (cfile -> lexchar - 1); i++) { | |
3384 | if (lix < (sizeof lexbuf) - 1) | |
3385 | lexbuf [lix++] = ' '; | |
3386 | if (cfile -> token_line [i] == '\t') { | |
3387 | for (lix; | |
3388 | lix < (sizeof lexbuf) - 1 && (lix & 7); lix++) | |
3389 | lexbuf [lix] = ' '; | |
3390 | } | |
3391 | } | |
3392 | lexbuf [lix] = 0; | |
3393 | ||
3394 | #ifndef DEBUG | |
3395 | syslog (log_priority | LOG_ERR, mbuf); | |
3396 | syslog (log_priority | LOG_ERR, cfile -> token_line); | |
3397 | if (cfile -> lexchar < 81) | |
3398 | syslog (log_priority | LOG_ERR, "%s^", lexbuf); | |
3399 | #endif | |
3400 | ||
3401 | if (log_perror) { | |
3402 | write (2, mbuf, strlen (mbuf)); | |
3403 | write (2, "\n", 1); | |
3404 | write (2, cfile -> token_line, strlen (cfile -> token_line)); | |
3405 | write (2, "\n", 1); | |
3406 | if (cfile -> lexchar < 81) | |
3407 | write (2, lexbuf, lix); | |
3408 | write (2, "^\n", 2); | |
3409 | } | |
3410 | ||
3411 | cfile -> warnings_occurred = 1; | |
3412 | ||
3413 | return 0; | |
3414 | } |