]>
Commit | Line | Data |
---|---|---|
b9d70dc8 PM |
1 | /* |
2 | * BIRD - filters | |
3 | * | |
1c20608e | 4 | * Copyright 1998--2000 Pavel Machek |
b9d70dc8 PM |
5 | * |
6 | * Can be freely distributed and used under the terms of the GNU GPL. | |
c9f8c1a8 | 7 | * |
1877dab2 | 8 | FIXME: priority of ! should be lower |
b9d70dc8 PM |
9 | */ |
10 | ||
11 | CF_HDR | |
12 | ||
8bdb05ed | 13 | #include "filter/f-inst.h" |
4f082dfa | 14 | #include "filter/data.h" |
8bdb05ed | 15 | |
2edb31b0 MM |
16 | CF_DEFINES |
17 | ||
b8cc390e OZ |
18 | static inline u32 pair(u32 a, u32 b) { return (a << 16) | b; } |
19 | static inline u32 pair_a(u32 p) { return p >> 16; } | |
20 | static inline u32 pair_b(u32 p) { return p & 0xFFFF; } | |
21 | ||
9b46748d | 22 | #define f_generate_complex(fi_code, da, arg) \ |
c0e958e0 | 23 | f_new_inst(FI_EA_SET, f_new_inst(fi_code, f_new_inst(FI_EA_GET, da), arg), da) |
b8cc390e OZ |
24 | |
25 | /* | |
26 | * Sets and their items are during parsing handled as lists, linked | |
27 | * through left ptr. The first item in a list also contains a pointer | |
28 | * to the last item in a list (right ptr). For convenience, even items | |
29 | * are handled as one-item lists. Lists are merged by f_merge_items(). | |
30 | */ | |
b2f00837 OZ |
31 | static int |
32 | f_valid_set_type(int type) | |
33 | { | |
34 | switch (type) | |
35 | { | |
36 | case T_INT: | |
37 | case T_PAIR: | |
38 | case T_QUAD: | |
39 | case T_ENUM: | |
40 | case T_IP: | |
41 | case T_EC: | |
66dbdbd9 | 42 | case T_LC: |
83715aa8 | 43 | case T_RD: |
b2f00837 OZ |
44 | return 1; |
45 | ||
46 | default: | |
47 | return 0; | |
48 | } | |
49 | } | |
b8cc390e OZ |
50 | |
51 | static inline struct f_tree * | |
52 | f_new_item(struct f_val from, struct f_val to) | |
92a72a4c | 53 | { |
b8cc390e OZ |
54 | struct f_tree *t = f_new_tree(); |
55 | t->right = t; | |
56 | t->from = from; | |
57 | t->to = to; | |
58 | return t; | |
59 | } | |
92a72a4c | 60 | |
b8cc390e OZ |
61 | static inline struct f_tree * |
62 | f_merge_items(struct f_tree *a, struct f_tree *b) | |
63 | { | |
64 | if (!a) return b; | |
65 | a->right->left = b; | |
66 | a->right = b->right; | |
67 | b->right = NULL; | |
68 | return a; | |
69 | } | |
92a72a4c | 70 | |
b8cc390e OZ |
71 | static inline struct f_tree * |
72 | f_new_pair_item(int fa, int ta, int fb, int tb) | |
73 | { | |
60566c5c OZ |
74 | check_u16(fa); |
75 | check_u16(ta); | |
76 | check_u16(fb); | |
77 | check_u16(tb); | |
78 | ||
79 | if ((ta < fa) || (tb < fb)) | |
80 | cf_error( "From value cannot be higher that To value in pair sets"); | |
81 | ||
b8cc390e OZ |
82 | struct f_tree *t = f_new_tree(); |
83 | t->right = t; | |
84 | t->from.type = t->to.type = T_PAIR; | |
85 | t->from.val.i = pair(fa, fb); | |
86 | t->to.val.i = pair(ta, tb); | |
87 | return t; | |
92a72a4c OZ |
88 | } |
89 | ||
b8cc390e OZ |
90 | static inline struct f_tree * |
91 | f_new_pair_set(int fa, int ta, int fb, int tb) | |
4fc36f39 | 92 | { |
60566c5c OZ |
93 | check_u16(fa); |
94 | check_u16(ta); | |
95 | check_u16(fb); | |
96 | check_u16(tb); | |
c454872f | 97 | |
b8cc390e OZ |
98 | if ((ta < fa) || (tb < fb)) |
99 | cf_error( "From value cannot be higher that To value in pair sets"); | |
c454872f | 100 | |
60566c5c OZ |
101 | struct f_tree *lst = NULL; |
102 | int i; | |
103 | ||
b8cc390e OZ |
104 | for (i = fa; i <= ta; i++) |
105 | lst = f_merge_items(lst, f_new_pair_item(i, i, fb, tb)); | |
106 | ||
107 | return lst; | |
4fc36f39 OF |
108 | } |
109 | ||
60566c5c | 110 | #define CC_ALL 0xFFFF |
42a0c054 | 111 | #define EC_ALL 0xFFFFFFFF |
60566c5c | 112 | #define LC_ALL 0xFFFFFFFF |
42a0c054 OZ |
113 | |
114 | static struct f_tree * | |
115 | f_new_ec_item(u32 kind, u32 ipv4_used, u32 key, u32 vf, u32 vt) | |
116 | { | |
117 | u64 fm, to; | |
118 | ||
e46128fb | 119 | if ((kind != EC_GENERIC) && (ipv4_used || (key >= 0x10000))) { |
42a0c054 OZ |
120 | check_u16(vf); |
121 | if (vt == EC_ALL) | |
122 | vt = 0xFFFF; | |
123 | else | |
124 | check_u16(vt); | |
125 | } | |
126 | ||
127 | if (kind == EC_GENERIC) { | |
128 | fm = ec_generic(key, vf); | |
129 | to = ec_generic(key, vt); | |
130 | } | |
131 | else if (ipv4_used) { | |
132 | fm = ec_ip4(kind, key, vf); | |
133 | to = ec_ip4(kind, key, vt); | |
134 | } | |
135 | else if (key < 0x10000) { | |
136 | fm = ec_as2(kind, key, vf); | |
137 | to = ec_as2(kind, key, vt); | |
138 | } | |
139 | else { | |
140 | fm = ec_as4(kind, key, vf); | |
141 | to = ec_as4(kind, key, vt); | |
142 | } | |
143 | ||
144 | struct f_tree *t = f_new_tree(); | |
145 | t->right = t; | |
146 | t->from.type = t->to.type = T_EC; | |
147 | t->from.val.ec = fm; | |
148 | t->to.val.ec = to; | |
149 | return t; | |
150 | } | |
151 | ||
60566c5c OZ |
152 | static struct f_tree * |
153 | f_new_lc_item(u32 f1, u32 t1, u32 f2, u32 t2, u32 f3, u32 t3) | |
154 | { | |
155 | struct f_tree *t = f_new_tree(); | |
156 | t->right = t; | |
157 | t->from.type = t->to.type = T_LC; | |
158 | t->from.val.lc = (lcomm) {f1, f2, f3}; | |
159 | t->to.val.lc = (lcomm) {t1, t2, t3}; | |
160 | return t; | |
161 | } | |
162 | ||
42a0c054 | 163 | static inline struct f_inst * |
5a14df39 | 164 | f_generate_empty(struct f_dynamic_attr dyn) |
5e173e9f | 165 | { |
9b46748d | 166 | struct f_val empty; |
42a0c054 | 167 | |
5a14df39 | 168 | switch (dyn.type & EAF_TYPE_MASK) { |
42a0c054 | 169 | case EAF_TYPE_AS_PATH: |
9b46748d | 170 | empty = f_const_empty_path; |
42a0c054 OZ |
171 | break; |
172 | case EAF_TYPE_INT_SET: | |
9b46748d | 173 | empty = f_const_empty_clist; |
42a0c054 OZ |
174 | break; |
175 | case EAF_TYPE_EC_SET: | |
9b46748d | 176 | empty = f_const_empty_eclist; |
42a0c054 | 177 | break; |
66dbdbd9 | 178 | case EAF_TYPE_LC_SET: |
9b46748d | 179 | empty = f_const_empty_lclist; |
66dbdbd9 | 180 | break; |
42a0c054 OZ |
181 | default: |
182 | cf_error("Can't empty that attribute"); | |
183 | } | |
184 | ||
c0e958e0 | 185 | return f_new_inst(FI_EA_SET, f_new_inst(FI_CONSTANT, empty), dyn); |
42a0c054 OZ |
186 | } |
187 | ||
9b46748d | 188 | #if 0 |
42a0c054 OZ |
189 | |
190 | static inline struct f_inst * | |
191 | f_generate_dpair(struct f_inst *t1, struct f_inst *t2) | |
192 | { | |
193 | struct f_inst *rv; | |
194 | ||
5a14df39 | 195 | if ((t1->fi_code == FI_CONSTANT) && (t2->fi_code == FI_CONSTANT)) { |
ca2ee91a | 196 | if ((t1->val.type != T_INT) || (t2->val.type != T_INT)) |
42a0c054 OZ |
197 | cf_error( "Can't operate with value of non-integer type in pair constructor"); |
198 | ||
7f0ac737 MM |
199 | check_u16(t1->a[1].i); |
200 | check_u16(t2->a[1].i); | |
42a0c054 | 201 | |
5a14df39 | 202 | rv = f_new_inst(FI_CONSTANT); |
ca2ee91a MM |
203 | rv->val = (struct f_val) { |
204 | .type = T_PAIR, | |
205 | .val.i = pair(t1->a[1].i, t2->a[1].i), | |
206 | }; | |
42a0c054 OZ |
207 | } |
208 | else { | |
5a14df39 | 209 | rv = f_new_inst(FI_PAIR_CONSTRUCT); |
7f0ac737 MM |
210 | rv->a[0].p = t1; |
211 | rv->a[1].p = t2; | |
42a0c054 OZ |
212 | } |
213 | ||
214 | return rv; | |
215 | } | |
216 | ||
217 | static inline struct f_inst * | |
218 | f_generate_ec(u16 kind, struct f_inst *tk, struct f_inst *tv) | |
219 | { | |
220 | struct f_inst *rv; | |
221 | int c1 = 0, c2 = 0, ipv4_used = 0; | |
222 | u32 key = 0, val2 = 0; | |
223 | ||
5a14df39 | 224 | if (tk->fi_code == FI_CONSTANT) { |
42a0c054 | 225 | c1 = 1; |
ca2ee91a | 226 | struct f_val *val = &(tk->val); |
1103b32e OZ |
227 | |
228 | if (val->type == T_INT) { | |
229 | ipv4_used = 0; key = val->val.i; | |
230 | } | |
ca2ee91a | 231 | else if (tk->val.type == T_QUAD) { |
1103b32e OZ |
232 | ipv4_used = 1; key = val->val.i; |
233 | } | |
5e173e9f MM |
234 | else if ((val->type == T_IP) && ipa_is_ip4(val->val.ip)) { |
235 | ipv4_used = 1; key = ipa_to_u32(val->val.ip); | |
42a0c054 OZ |
236 | } |
237 | else | |
238 | cf_error("Can't operate with key of non-integer/IPv4 type in EC constructor"); | |
239 | } | |
42a0c054 | 240 | |
5a14df39 | 241 | if (tv->fi_code == FI_CONSTANT) { |
ca2ee91a | 242 | if (tv->val.type != T_INT) |
42a0c054 OZ |
243 | cf_error("Can't operate with value of non-integer type in EC constructor"); |
244 | c2 = 1; | |
ca2ee91a | 245 | val2 = tv->val.val.i; |
42a0c054 OZ |
246 | } |
247 | ||
248 | if (c1 && c2) { | |
249 | u64 ec; | |
5e173e9f | 250 | |
42a0c054 OZ |
251 | if (kind == EC_GENERIC) { |
252 | ec = ec_generic(key, val2); | |
253 | } | |
254 | else if (ipv4_used) { | |
255 | check_u16(val2); | |
256 | ec = ec_ip4(kind, key, val2); | |
257 | } | |
258 | else if (key < 0x10000) { | |
259 | ec = ec_as2(kind, key, val2); | |
260 | } | |
261 | else { | |
262 | check_u16(val2); | |
263 | ec = ec_as4(kind, key, val2); | |
264 | } | |
265 | ||
ca2ee91a MM |
266 | rv = f_new_inst(FI_CONSTANT); |
267 | rv->val = (struct f_val) { | |
268 | .type = T_EC, | |
269 | .val.ec = ec, | |
270 | }; | |
42a0c054 OZ |
271 | } |
272 | else { | |
5a14df39 | 273 | rv = f_new_inst(FI_EC_CONSTRUCT); |
42a0c054 | 274 | rv->aux = kind; |
7f0ac737 MM |
275 | rv->a[0].p = tk; |
276 | rv->a[1].p = tv; | |
42a0c054 OZ |
277 | } |
278 | ||
279 | return rv; | |
78e33c29 | 280 | } |
42a0c054 | 281 | |
66dbdbd9 OZ |
282 | static inline struct f_inst * |
283 | f_generate_lc(struct f_inst *t1, struct f_inst *t2, struct f_inst *t3) | |
284 | { | |
285 | struct f_inst *rv; | |
286 | ||
5a14df39 | 287 | if ((t1->fi_code == FI_CONSTANT) && (t2->fi_code == FI_CONSTANT) && (t3->fi_code == FI_CONSTANT)) { |
ca2ee91a | 288 | if ((t1->val.type != T_INT) || (t2->val.type != T_INT) || (t3->val.type != T_INT)) |
66dbdbd9 OZ |
289 | cf_error( "LC - Can't operate with value of non-integer type in tuple constructor"); |
290 | ||
ca2ee91a MM |
291 | rv = f_new_inst(FI_CONSTANT); |
292 | rv->val = (struct f_val) { | |
293 | .type = T_LC, | |
294 | .val.lc = (lcomm) { t1->a[1].i, t2->a[1].i, t3->a[1].i }, | |
295 | }; | |
66dbdbd9 OZ |
296 | } |
297 | else | |
298 | { | |
478f9bab | 299 | rv = f_new_inst(FI_LC_CONSTRUCT); |
7f0ac737 MM |
300 | rv->a[0].p = t1; |
301 | rv->a[1].p = t2; | |
302 | rv->a[2].p = t3; | |
66dbdbd9 OZ |
303 | } |
304 | ||
305 | return rv; | |
306 | } | |
307 | ||
e8bc64e3 | 308 | static inline struct f_inst * |
4c553c5a | 309 | f_generate_path_mask(struct f_inst *t) |
e8bc64e3 | 310 | { |
4c553c5a MM |
311 | uint len = 0; |
312 | uint dyn = 0; | |
313 | for (const struct f_inst *tt = t; tt; tt = tt->next) { | |
314 | if (tt->fi_code != FI_CONSTANT) | |
315 | dyn++; | |
316 | len++; | |
317 | } | |
318 | ||
319 | if (dyn) { | |
320 | struct f_inst *pmc = f_new_inst(FI_PATHMASK_CONSTRUCT); | |
321 | pmc->a[0].p = t; | |
322 | pmc->a[1].i = len; | |
323 | return pmc; | |
e8bc64e3 MM |
324 | } |
325 | ||
4c553c5a | 326 | struct f_path_mask *pm = cfg_allocz(sizeof(struct f_path_mask) + len * sizeof(struct f_path_mask_item)); |
e8bc64e3 | 327 | |
4c553c5a MM |
328 | uint i = 0; |
329 | for (const struct f_inst *tt = t; tt; tt = tt->next) | |
330 | pm->item[i++] = tt->val.val.pmi; | |
331 | ||
332 | pm->len = i; | |
333 | struct f_inst *pmc = f_new_inst(FI_CONSTANT); | |
334 | pmc->val = (struct f_val) { .type = T_PATH_MASK, .val.path_mask = pm, }; | |
335 | ||
336 | return pmc; | |
e8bc64e3 | 337 | } |
42a0c054 | 338 | |
9b46748d MM |
339 | #endif |
340 | ||
9b0a0ba9 OZ |
341 | /* |
342 | * Remove all new lines and doubled whitespaces | |
343 | * and convert all tabulators to spaces | |
344 | * and return a copy of string | |
345 | */ | |
346 | char * | |
347 | assert_copy_expr(const char *start, size_t len) | |
348 | { | |
349 | /* XXX: Allocates maybe a little more memory than we really finally need */ | |
350 | char *str = cfg_alloc(len + 1); | |
351 | ||
352 | char *dst = str; | |
353 | const char *src = start - 1; | |
354 | const char *end = start + len; | |
355 | while (++src < end) | |
356 | { | |
357 | if (*src == '\n') | |
358 | continue; | |
359 | ||
360 | /* Skip doubled whitespaces */ | |
361 | if (src != start) | |
362 | { | |
363 | const char *prev = src - 1; | |
364 | if ((*src == ' ' || *src == '\t') && (*prev == ' ' || *prev == '\t')) | |
365 | continue; | |
366 | } | |
367 | ||
368 | if (*src == '\t') | |
369 | *dst = ' '; | |
370 | else | |
371 | *dst = *src; | |
372 | ||
373 | dst++; | |
374 | } | |
375 | *dst = '\0'; | |
376 | ||
377 | return str; | |
378 | } | |
379 | ||
380 | /* | |
381 | * assert_done - create f_instruction of bt_assert | |
382 | * @expr: expression in bt_assert() | |
383 | * @start: pointer to first char of test expression | |
384 | * @end: pointer to the last char of test expression | |
385 | */ | |
386 | static struct f_inst * | |
387 | assert_done(struct f_inst *expr, const char *start, const char *end) | |
388 | { | |
9b46748d MM |
389 | return f_new_inst(FI_ASSERT, expr, |
390 | (end >= start) ? | |
391 | assert_copy_expr(start, end - start + 1) | |
392 | : "???"); | |
9b0a0ba9 | 393 | } |
42a0c054 | 394 | |
c0e958e0 MM |
395 | static struct f_inst * |
396 | assert_assign(struct f_lval *lval, struct f_inst *expr, const char *start, const char *end) | |
397 | { | |
398 | struct f_inst *setter, *getter, *checker; | |
399 | switch (lval->type) { | |
400 | case F_LVAL_VARIABLE: | |
401 | setter = f_new_inst(FI_SET, expr, lval->sym); | |
402 | getter = f_new_inst(FI_VARIABLE, lval->sym); | |
403 | break; | |
404 | case F_LVAL_PREFERENCE: | |
405 | setter = f_new_inst(FI_PREF_SET, expr); | |
406 | getter = f_new_inst(FI_PREF_GET); | |
407 | break; | |
408 | case F_LVAL_SA: | |
409 | setter = f_new_inst(FI_RTA_SET, expr, lval->sa); | |
410 | getter = f_new_inst(FI_RTA_GET, lval->sa); | |
411 | break; | |
412 | case F_LVAL_EA: | |
413 | setter = f_new_inst(FI_EA_SET, expr, lval->da); | |
414 | getter = f_new_inst(FI_EA_GET, lval->da); | |
415 | break; | |
416 | default: | |
417 | bug("Unknown lval type"); | |
418 | } | |
419 | ||
420 | checker = f_new_inst(FI_EQ, expr, getter); | |
4f082dfa | 421 | setter->next = checker; |
c0e958e0 MM |
422 | |
423 | return assert_done(setter, start, end); | |
424 | } | |
425 | ||
b9d70dc8 PM |
426 | CF_DECLS |
427 | ||
e4a73dbf | 428 | CF_KEYWORDS(FUNCTION, PRINT, PRINTN, UNSET, RETURN, |
ba921648 | 429 | ACCEPT, REJECT, ERROR, QUITBIRD, |
8c9986d3 | 430 | INT, BOOL, IP, TYPE, PREFIX, RD, PAIR, QUAD, EC, LC, |
66dbdbd9 | 431 | SET, STRING, BGPMASK, BGPPATH, CLIST, ECLIST, LCLIST, |
7db7b7db | 432 | IF, THEN, ELSE, CASE, |
42a0c054 | 433 | TRUE, FALSE, RT, RO, UNKNOWN, GENERIC, |
5b208e29 | 434 | FROM, GW, NET, MASK, PROTO, SOURCE, SCOPE, DEST, IFNAME, IFINDEX, |
a5fc5958 | 435 | PREFERENCE, |
b24b7811 | 436 | ROA_CHECK, ASN, SRC, |
61e501da | 437 | IS_V4, IS_V6, |
e58f8c28 | 438 | LEN, MAXLEN, |
f4536657 | 439 | DEFINED, |
7f77e250 | 440 | ADD, DELETE, CONTAINS, RESET, |
9c9cc35c | 441 | PREPEND, FIRST, LAST, LAST_NONAGGREGATED, MATCH, |
afc54517 | 442 | EMPTY, |
265419a3 | 443 | FILTER, WHERE, EVAL, ATTRIBUTE, |
132529ce | 444 | BT_ASSERT, BT_TEST_SUITE, BT_CHECK_ASSIGN, BT_TEST_SAME, FORMAT) |
b9d70dc8 | 445 | |
f4536657 | 446 | %nonassoc THEN |
4ed8718a | 447 | %nonassoc ELSE |
f4536657 | 448 | |
9b46748d MM |
449 | %type <xc> function_params declsn |
450 | %type <xp> cmds_int function_body | |
c0e958e0 | 451 | %type <x> term block cmd cmds constant constructor print_one print_list var_list var_listn function_call symbol_value bgp_path_expr bgp_path bgp_path_tail one_decl decls |
5a14df39 MM |
452 | %type <fda> dynamic_attr |
453 | %type <fsa> static_attr | |
0b39b1cb MM |
454 | %type <f> filter where_filter |
455 | %type <fl> filter_body | |
c0e958e0 | 456 | %type <flv> lvalue |
9b46748d MM |
457 | %type <i> type |
458 | %type <ecs> ec_kind | |
459 | %type <fret> break_command | |
60566c5c OZ |
460 | %type <i32> cnum |
461 | %type <e> pair_item ec_item lc_item set_item switch_item set_items switch_items switch_body | |
b1a597e0 | 462 | %type <trie> fprefix_set |
5e173e9f MM |
463 | %type <v> set_atom switch_atom fipa |
464 | %type <px> fprefix | |
9b0a0ba9 | 465 | %type <t> get_cf_position |
b9d70dc8 PM |
466 | |
467 | CF_GRAMMAR | |
468 | ||
f851f0d7 | 469 | conf: filter_def ; |
e0f2e42f | 470 | filter_def: |
0b39b1cb | 471 | FILTER CF_SYM_VOID { $2 = cf_define_symbol($2, SYM_FILTER, filter, NULL); cf_push_scope( $2 ); } |
b2b7bbfc | 472 | filter_body { |
0b39b1cb MM |
473 | struct filter *f = cfg_alloc(sizeof(struct filter)); |
474 | *f = (struct filter) { .name = $2->name, .root = $4 }; | |
475 | $2->filter = f; | |
476 | ||
ae3e1af2 | 477 | cf_pop_scope(); |
b9d70dc8 PM |
478 | } |
479 | ; | |
480 | ||
f851f0d7 | 481 | conf: filter_eval ; |
1c20608e | 482 | filter_eval: |
4c553c5a | 483 | EVAL term { f_eval_int(f_postfixify($2)); } |
1c20608e MM |
484 | ; |
485 | ||
265419a3 | 486 | conf: custom_attr ; |
c0e958e0 | 487 | custom_attr: ATTRIBUTE type CF_SYM_VOID ';' { |
0b39b1cb | 488 | cf_define_symbol($3, SYM_ATTRIBUTE, attribute, ca_lookup(new_config->pool, $3->name, $2)->fda); |
265419a3 MM |
489 | }; |
490 | ||
f851f0d7 | 491 | conf: bt_test_suite ; |
9b0a0ba9 | 492 | bt_test_suite: |
c0e958e0 | 493 | BT_TEST_SUITE '(' CF_SYM_FUNCTION ',' text ')' { |
132529ce | 494 | struct f_bt_test_suite *t = cfg_allocz(sizeof(struct f_bt_test_suite)); |
0b39b1cb | 495 | t->fn = $3->function; |
9b0a0ba9 OZ |
496 | t->fn_name = $3->name; |
497 | t->dsc = $5; | |
498 | ||
499 | add_tail(&new_config->tests, &t->n); | |
500 | } | |
501 | ; | |
502 | ||
132529ce MM |
503 | conf: bt_test_same ; |
504 | bt_test_same: | |
505 | BT_TEST_SAME '(' CF_SYM_FUNCTION ',' CF_SYM_FUNCTION ',' NUM ')' { | |
506 | struct f_bt_test_suite *t = cfg_allocz(sizeof(struct f_bt_test_suite)); | |
0b39b1cb MM |
507 | t->fn = $3->function; |
508 | t->cmp = $5->function; | |
132529ce MM |
509 | t->result = $7; |
510 | t->fn_name = $3->name; | |
511 | t->dsc = $5->name; | |
512 | add_tail(&new_config->tests, &t->n); | |
513 | } | |
514 | ; | |
515 | ||
ba921648 PM |
516 | type: |
517 | INT { $$ = T_INT; } | |
518 | | BOOL { $$ = T_BOOL; } | |
519 | | IP { $$ = T_IP; } | |
8c9986d3 | 520 | | RD { $$ = T_RD; } |
5e173e9f | 521 | | PREFIX { $$ = T_NET; } |
ba921648 | 522 | | PAIR { $$ = T_PAIR; } |
126683fe | 523 | | QUAD { $$ = T_QUAD; } |
42a0c054 | 524 | | EC { $$ = T_EC; } |
66dbdbd9 | 525 | | LC { $$ = T_LC; } |
ba921648 | 526 | | STRING { $$ = T_STRING; } |
10a53608 PM |
527 | | BGPMASK { $$ = T_PATH_MASK; } |
528 | | BGPPATH { $$ = T_PATH; } | |
529 | | CLIST { $$ = T_CLIST; } | |
42a0c054 | 530 | | ECLIST { $$ = T_ECLIST; } |
66dbdbd9 | 531 | | LCLIST { $$ = T_LCLIST; } |
c8cafc8e | 532 | | type SET { |
ba921648 | 533 | switch ($1) { |
b1a597e0 | 534 | case T_INT: |
b1a597e0 | 535 | case T_PAIR: |
126683fe | 536 | case T_QUAD: |
42a0c054 | 537 | case T_EC: |
66dbdbd9 | 538 | case T_LC: |
83715aa8 | 539 | case T_RD: |
126683fe | 540 | case T_IP: |
b1a597e0 OZ |
541 | $$ = T_SET; |
542 | break; | |
543 | ||
5e173e9f | 544 | case T_NET: |
b1a597e0 OZ |
545 | $$ = T_PREFIX_SET; |
546 | break; | |
547 | ||
ba921648 | 548 | default: |
a5a947d4 | 549 | cf_error( "You can't create sets of this type." ); |
ba921648 | 550 | } |
b1a597e0 | 551 | } |
ba921648 PM |
552 | ; |
553 | ||
6dc7a0cb | 554 | one_decl: |
c0e958e0 | 555 | type CF_SYM_VOID { |
4ee39ff2 OZ |
556 | struct f_val * val = cfg_alloc(sizeof(struct f_val)); |
557 | val->type = T_VOID; | |
0b39b1cb | 558 | $2 = cf_define_symbol($2, SYM_VARIABLE | $1, val, val); |
d4d75628 | 559 | DBG( "New variable %s type %x\n", $2->name, $1 ); |
9b46748d | 560 | $$ = f_new_inst(FI_SET, NULL, $2); |
ba921648 PM |
561 | } |
562 | ; | |
563 | ||
6dc7a0cb PM |
564 | /* Decls with ';' at the end */ |
565 | decls: /* EMPTY */ { $$ = NULL; } | |
566 | | one_decl ';' decls { | |
567 | $$ = $1; | |
4f082dfa | 568 | $$->next = $3; |
6dc7a0cb PM |
569 | } |
570 | ; | |
571 | ||
9b46748d MM |
572 | /* Declarations that have no ';' at the end. Beware; these are reversed. */ |
573 | declsn: one_decl { $$.inst = $1; $$.count = 1; } | |
736fd730 | 574 | | one_decl ';' declsn { |
ea4f55e3 MM |
575 | $1->next = $3.inst; |
576 | $$.count = $3.count + 1; | |
577 | $$.inst = $1; | |
6dc7a0cb PM |
578 | } |
579 | ; | |
580 | ||
e0f2e42f | 581 | filter_body: |
ba921648 | 582 | function_body { |
9b46748d MM |
583 | if ($1[0]) { |
584 | const struct f_inst *inst[2] = { $1[0], $1[1] }; | |
0b39b1cb | 585 | $$ = f_postfixify_concat(inst, 2); |
9b46748d MM |
586 | } |
587 | else | |
0b39b1cb | 588 | $$ = f_postfixify($1[1]); |
e0f2e42f MM |
589 | } |
590 | ; | |
591 | ||
592 | filter: | |
c0e958e0 | 593 | CF_SYM_FILTER { |
0b39b1cb MM |
594 | $$ = $1->filter; |
595 | } | |
596 | | filter_body { | |
597 | struct filter *f = cfg_alloc(sizeof(struct filter)); | |
598 | *f = (struct filter) { .root = $1 }; | |
599 | $$ = f; | |
e0f2e42f | 600 | } |
e0f2e42f MM |
601 | ; |
602 | ||
430da60f MM |
603 | where_filter: |
604 | WHERE term { | |
224b77d4 | 605 | /* Construct 'IF term THEN { ACCEPT; } ELSE { REJECT; }' */ |
9b46748d | 606 | $$ = f_new_where($2); |
4c553c5a | 607 | } |
430da60f MM |
608 | ; |
609 | ||
ba921648 | 610 | function_params: |
9b46748d MM |
611 | '(' declsn ')' { $$ = $2; } |
612 | | '(' ')' { $$.inst = NULL; $$.count = 0; } | |
ba921648 | 613 | ; |
b9d70dc8 | 614 | |
ba921648 PM |
615 | function_body: |
616 | decls '{' cmds '}' { | |
9b46748d MM |
617 | $$[0] = $1 ? f_clear_local_vars($1) : NULL; |
618 | $$[1] = $3; | |
84c7e194 | 619 | } |
ba921648 PM |
620 | ; |
621 | ||
f851f0d7 | 622 | conf: function_def ; |
ba921648 | 623 | function_def: |
c0e958e0 | 624 | FUNCTION CF_SYM_VOID { DBG( "Beginning of function %s\n", $2->name ); |
0b39b1cb | 625 | $2 = cf_define_symbol($2, SYM_FUNCTION, function, NULL); |
bf3eb98e MM |
626 | cf_push_scope($2); |
627 | } function_params function_body { | |
9b46748d MM |
628 | const struct f_inst *catlist[4]; |
629 | uint count = 0; | |
630 | ||
631 | /* Argument setters */ | |
632 | if ($4.inst) | |
633 | catlist[count++] = $4.inst; | |
634 | ||
635 | /* Local var clearers */ | |
636 | if ($5[0]) | |
637 | catlist[count++] = $5[0]; | |
638 | ||
639 | /* Return void if no return is needed */ | |
640 | catlist[count++] = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_VOID }); | |
641 | ||
642 | /* Function body itself */ | |
643 | if ($5[1]) | |
644 | catlist[count++] = $5[1]; | |
645 | ||
0b39b1cb MM |
646 | struct f_line *fl = f_postfixify_concat(catlist, count); |
647 | fl->args = $4.count; | |
648 | $2->function = fl; | |
649 | ||
ae3e1af2 | 650 | cf_pop_scope(); |
ba921648 PM |
651 | } |
652 | ; | |
653 | ||
654 | /* Programs */ | |
655 | ||
656 | cmds: /* EMPTY */ { $$ = NULL; } | |
9b46748d | 657 | | cmds_int { $$ = $1[0]; } |
5f47c4c1 OZ |
658 | ; |
659 | ||
9b46748d | 660 | cmds_int: cmd { $$[0] = $$[1] = $1; } |
4f082dfa | 661 | | cmds_int cmd { $$[1] = $2; $1[1]->next = $2; $$[0] = $1[0]; } |
84c7e194 PM |
662 | ; |
663 | ||
2575593e | 664 | block: |
ba921648 | 665 | cmd { |
2575593e PM |
666 | $$=$1; |
667 | } | |
668 | | '{' cmds '}' { | |
669 | $$=$2; | |
670 | } | |
671 | ; | |
672 | ||
d3dd620b PM |
673 | /* |
674 | * Complex types, their bison value is struct f_val | |
675 | */ | |
e3f2d5fc | 676 | fipa: |
04632fd7 OZ |
677 | IP4 %prec PREFIX_DUMMY { $$.type = T_IP; $$.val.ip = ipa_from_ip4($1); } |
678 | | IP6 %prec PREFIX_DUMMY { $$.type = T_IP; $$.val.ip = ipa_from_ip6($1); } | |
d3dd620b PM |
679 | ; |
680 | ||
b8cc390e OZ |
681 | |
682 | ||
683 | /* | |
684 | * Set constants. They are also used in switch cases. We use separate | |
685 | * nonterminals for switch (set_atom/switch_atom, set_item/switch_item ...) | |
686 | * to elude a collision between symbol (in expr) in set_atom and symbol | |
687 | * as a function call in switch case cmds. | |
688 | */ | |
689 | ||
38506f71 | 690 | set_atom: |
83715aa8 OZ |
691 | NUM { $$.type = T_INT; $$.val.i = $1; } |
692 | | fipa { $$ = $1; } | |
693 | | VPN_RD { $$.type = T_RD; $$.val.ec = $1; } | |
694 | | ENUM { $$.type = pair_a($1); $$.val.i = pair_b($1); } | |
b2f00837 | 695 | | '(' term ')' { |
4c553c5a | 696 | if (f_eval(f_postfixify($2), cfg_mem, &($$)) > F_RETURN) cf_error("Runtime error"); |
b2f00837 OZ |
697 | if (!f_valid_set_type($$.type)) cf_error("Set-incompatible type"); |
698 | } | |
c0e958e0 | 699 | | CF_SYM_CONSTANT { |
b2f00837 | 700 | if (!f_valid_set_type(SYM_TYPE($1))) cf_error("%s: set-incompatible type", $1->name); |
0b39b1cb | 701 | $$ = *$1->val; |
b2f00837 | 702 | } |
b8cc390e | 703 | ; |
38506f71 | 704 | |
b8cc390e OZ |
705 | switch_atom: |
706 | NUM { $$.type = T_INT; $$.val.i = $1; } | |
4c553c5a | 707 | | '(' term ')' { $$.type = T_INT; $$.val.i = f_eval_int(f_postfixify($2)); } |
b8cc390e OZ |
708 | | fipa { $$ = $1; } |
709 | | ENUM { $$.type = pair_a($1); $$.val.i = pair_b($1); } | |
710 | ; | |
711 | ||
60566c5c | 712 | cnum: |
4c553c5a | 713 | term { $$ = f_eval_int(f_postfixify($1)); } |
b8cc390e OZ |
714 | |
715 | pair_item: | |
60566c5c OZ |
716 | '(' cnum ',' cnum ')' { $$ = f_new_pair_item($2, $2, $4, $4); } |
717 | | '(' cnum ',' cnum DDOT cnum ')' { $$ = f_new_pair_item($2, $2, $4, $6); } | |
718 | | '(' cnum ',' '*' ')' { $$ = f_new_pair_item($2, $2, 0, CC_ALL); } | |
719 | | '(' cnum DDOT cnum ',' cnum ')' { $$ = f_new_pair_set($2, $4, $6, $6); } | |
720 | | '(' cnum DDOT cnum ',' cnum DDOT cnum ')' { $$ = f_new_pair_set($2, $4, $6, $8); } | |
721 | | '(' cnum DDOT cnum ',' '*' ')' { $$ = f_new_pair_item($2, $4, 0, CC_ALL); } | |
722 | | '(' '*' ',' cnum ')' { $$ = f_new_pair_set(0, CC_ALL, $4, $4); } | |
723 | | '(' '*' ',' cnum DDOT cnum ')' { $$ = f_new_pair_set(0, CC_ALL, $4, $6); } | |
724 | | '(' '*' ',' '*' ')' { $$ = f_new_pair_item(0, CC_ALL, 0, CC_ALL); } | |
725 | | '(' cnum ',' cnum ')' DDOT '(' cnum ',' cnum ')' | |
726 | { $$ = f_new_pair_item($2, $8, $4, $10); } | |
38506f71 PM |
727 | ; |
728 | ||
42a0c054 OZ |
729 | ec_kind: |
730 | RT { $$ = EC_RT; } | |
731 | | RO { $$ = EC_RO; } | |
732 | | UNKNOWN NUM { $$ = $2; } | |
733 | | GENERIC { $$ = EC_GENERIC; } | |
734 | ; | |
735 | ||
736 | ec_item: | |
60566c5c OZ |
737 | '(' ec_kind ',' cnum ',' cnum ')' { $$ = f_new_ec_item($2, 0, $4, $6, $6); } |
738 | | '(' ec_kind ',' cnum ',' cnum DDOT cnum ')' { $$ = f_new_ec_item($2, 0, $4, $6, $8); } | |
739 | | '(' ec_kind ',' cnum ',' '*' ')' { $$ = f_new_ec_item($2, 0, $4, 0, EC_ALL); } | |
42a0c054 OZ |
740 | ; |
741 | ||
60566c5c OZ |
742 | lc_item: |
743 | '(' cnum ',' cnum ',' cnum ')' { $$ = f_new_lc_item($2, $2, $4, $4, $6, $6); } | |
744 | | '(' cnum ',' cnum ',' cnum DDOT cnum ')' { $$ = f_new_lc_item($2, $2, $4, $4, $6, $8); } | |
745 | | '(' cnum ',' cnum ',' '*' ')' { $$ = f_new_lc_item($2, $2, $4, $4, 0, LC_ALL); } | |
746 | | '(' cnum ',' cnum DDOT cnum ',' '*' ')' { $$ = f_new_lc_item($2, $2, $4, $6, 0, LC_ALL); } | |
747 | | '(' cnum ',' '*' ',' '*' ')' { $$ = f_new_lc_item($2, $2, 0, LC_ALL, 0, LC_ALL); } | |
748 | | '(' cnum DDOT cnum ',' '*' ',' '*' ')' { $$ = f_new_lc_item($2, $4, 0, LC_ALL, 0, LC_ALL); } | |
749 | | '(' '*' ',' '*' ',' '*' ')' { $$ = f_new_lc_item(0, LC_ALL, 0, LC_ALL, 0, LC_ALL); } | |
750 | | '(' cnum ',' cnum ',' cnum ')' DDOT '(' cnum ',' cnum ',' cnum ')' | |
751 | { $$ = f_new_lc_item($2, $10, $4, $12, $6, $14); } | |
752 | ; | |
42a0c054 | 753 | |
b8cc390e OZ |
754 | set_item: |
755 | pair_item | |
42a0c054 | 756 | | ec_item |
60566c5c | 757 | | lc_item |
b8cc390e OZ |
758 | | set_atom { $$ = f_new_item($1, $1); } |
759 | | set_atom DDOT set_atom { $$ = f_new_item($1, $3); } | |
760 | ; | |
761 | ||
762 | switch_item: | |
763 | pair_item | |
42a0c054 | 764 | | ec_item |
60566c5c | 765 | | lc_item |
b8cc390e OZ |
766 | | switch_atom { $$ = f_new_item($1, $1); } |
767 | | switch_atom DDOT switch_atom { $$ = f_new_item($1, $3); } | |
768 | ; | |
769 | ||
38506f71 | 770 | set_items: |
b8cc390e OZ |
771 | set_item |
772 | | set_items ',' set_item { $$ = f_merge_items($1, $3); } | |
773 | ; | |
774 | ||
775 | switch_items: | |
776 | switch_item | |
777 | | switch_items ',' switch_item { $$ = f_merge_items($1, $3); } | |
38506f71 PM |
778 | ; |
779 | ||
b1a597e0 | 780 | fprefix: |
04632fd7 OZ |
781 | net_ip_ { $$.net = $1; $$.lo = $1.pxlen; $$.hi = $1.pxlen; } |
782 | | net_ip_ '+' { $$.net = $1; $$.lo = $1.pxlen; $$.hi = net_max_prefix_length[$1.type]; } | |
783 | | net_ip_ '-' { $$.net = $1; $$.lo = 0; $$.hi = $1.pxlen; } | |
784 | | net_ip_ '{' NUM ',' NUM '}' { | |
5e173e9f | 785 | $$.net = $1; $$.lo = $3; $$.hi = $5; |
6aaaa635 OZ |
786 | if (($3 > $5) || ($5 > net_max_prefix_length[$1.type])) |
787 | cf_error("Invalid prefix pattern range: {%u, %u}", $3, $5); | |
b1a597e0 OZ |
788 | } |
789 | ; | |
790 | ||
791 | fprefix_set: | |
04632fd7 OZ |
792 | fprefix { $$ = f_new_trie(cfg_mem, sizeof(struct f_trie_node)); trie_add_prefix($$, &($1.net), $1.lo, $1.hi); } |
793 | | fprefix_set ',' fprefix { $$ = $1; trie_add_prefix($$, &($3.net), $3.lo, $3.hi); } | |
b1a597e0 OZ |
794 | ; |
795 | ||
41be4444 | 796 | switch_body: /* EMPTY */ { $$ = NULL; } |
b8cc390e OZ |
797 | | switch_body switch_items ':' cmds { |
798 | /* Fill data fields */ | |
799 | struct f_tree *t; | |
4c553c5a | 800 | struct f_line *line = f_postfixify($4); |
b8cc390e | 801 | for (t = $2; t; t = t->left) |
4c553c5a | 802 | t->data = line; |
b8cc390e | 803 | $$ = f_merge_items($1, $2); |
41be4444 | 804 | } |
5e173e9f | 805 | | switch_body ELSECOL cmds { |
b8cc390e OZ |
806 | struct f_tree *t = f_new_tree(); |
807 | t->from.type = t->to.type = T_VOID; | |
808 | t->right = t; | |
4c553c5a | 809 | t->data = f_postfixify($3); |
b8cc390e OZ |
810 | $$ = f_merge_items($1, t); |
811 | } | |
41be4444 | 812 | ; |
d3dd620b | 813 | |
92a72a4c | 814 | bgp_path_expr: |
c0e958e0 | 815 | symbol_value { $$ = $1; } |
92a72a4c OZ |
816 | | '(' term ')' { $$ = $2; } |
817 | ; | |
818 | ||
f9491630 | 819 | bgp_path: |
3e52d112 | 820 | PO bgp_path_tail PC { $$ = $2; } |
f9491630 OZ |
821 | ; |
822 | ||
3e52d112 | 823 | bgp_path_tail: |
4f082dfa MM |
824 | NUM bgp_path_tail { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_PATH_MASK_ITEM, .val.pmi = { .asn = $1, .kind = PM_ASN, }, }); $$->next = $2; } |
825 | | NUM DDOT NUM bgp_path_tail { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_PATH_MASK_ITEM, .val.pmi = { .from = $1, .to = $3, .kind = PM_ASN_RANGE }, }); $$->next = $4; } | |
826 | | '*' bgp_path_tail { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_PATH_MASK_ITEM, .val.pmi = { .kind = PM_ASTERISK }, }); $$->next = $2; } | |
827 | | '?' bgp_path_tail { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_PATH_MASK_ITEM, .val.pmi = { .kind = PM_QUESTION }, }); $$->next = $2; } | |
828 | | bgp_path_expr bgp_path_tail { $$ = $1; $$->next = $2; } | |
122deb6d | 829 | | { $$ = NULL; } |
f9491630 | 830 | ; |
77de6882 | 831 | |
23b1539b | 832 | constant: |
9b46748d MM |
833 | NUM { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_INT, .val.i = $1, }); } |
834 | | TRUE { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_BOOL, .val.i = 1, }); } | |
835 | | FALSE { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_BOOL, .val.i = 0, }); } | |
836 | | TEXT { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_STRING, .val.s = $1, }); } | |
837 | | fipa { $$ = f_new_inst(FI_CONSTANT, $1); } | |
838 | | VPN_RD { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_RD, .val.ec = $1, }); } | |
839 | | net_ { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_NET, .val.net = $1, }); } | |
ca2ee91a MM |
840 | | '[' set_items ']' { |
841 | DBG( "We've got a set here..." ); | |
9b46748d | 842 | $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_SET, .val.t = build_tree($2), }); |
ca2ee91a MM |
843 | DBG( "ook\n" ); |
844 | } | |
9b46748d MM |
845 | | '[' fprefix_set ']' { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_PREFIX_SET, .val.ti = $2, }); } |
846 | | ENUM { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = $1 >> 16, .val.i = $1 & 0xffff, }); } | |
23b1539b PM |
847 | ; |
848 | ||
42a0c054 | 849 | constructor: |
9b46748d MM |
850 | '(' term ',' term ')' { $$ = f_new_inst(FI_PAIR_CONSTRUCT, $2, $4); } |
851 | | '(' ec_kind ',' term ',' term ')' { $$ = f_new_inst(FI_EC_CONSTRUCT, $4, $6, $2); } | |
852 | | '(' term ',' term ',' term ')' { $$ = f_new_inst(FI_LC_CONSTRUCT, $2, $4, $6); } | |
853 | | bgp_path { $$ = f_new_inst(FI_PATHMASK_CONSTRUCT, $1, 0); } | |
42a0c054 OZ |
854 | ; |
855 | ||
92a72a4c | 856 | |
2d496d20 | 857 | function_call: |
c0e958e0 | 858 | CF_SYM_FUNCTION '(' var_list ')' { |
9b46748d | 859 | $$ = f_new_inst(FI_CALL, $1, $3); |
2d496d20 PM |
860 | } |
861 | ; | |
862 | ||
c0e958e0 | 863 | symbol_value: |
ea4f55e3 | 864 | CF_SYM_CONSTANT { $$ = f_new_inst(FI_VARIABLE, $1); } |
c0e958e0 | 865 | | CF_SYM_VARIABLE { $$ = f_new_inst(FI_VARIABLE, $1); } |
0b39b1cb | 866 | | CF_SYM_ATTRIBUTE { $$ = f_new_inst(FI_EA_GET, *$1->attribute); } |
c0e958e0 | 867 | ; |
92a72a4c | 868 | |
2bdb5e00 | 869 | static_attr: |
4c553c5a MM |
870 | FROM { $$ = f_new_static_attr(T_IP, SA_FROM, 0); } |
871 | | GW { $$ = f_new_static_attr(T_IP, SA_GW, 0); } | |
872 | | NET { $$ = f_new_static_attr(T_NET, SA_NET, 1); } | |
873 | | PROTO { $$ = f_new_static_attr(T_STRING, SA_PROTO, 1); } | |
874 | | SOURCE { $$ = f_new_static_attr(T_ENUM_RTS, SA_SOURCE, 1); } | |
875 | | SCOPE { $$ = f_new_static_attr(T_ENUM_SCOPE, SA_SCOPE, 0); } | |
876 | | DEST { $$ = f_new_static_attr(T_ENUM_RTD, SA_DEST, 0); } | |
877 | | IFNAME { $$ = f_new_static_attr(T_STRING, SA_IFNAME, 0); } | |
878 | | IFINDEX { $$ = f_new_static_attr(T_INT, SA_IFINDEX, 1); } | |
2bdb5e00 PM |
879 | ; |
880 | ||
84c7e194 | 881 | term: |
5a14df39 | 882 | '(' term ')' { $$ = $2; } |
9b46748d MM |
883 | | term '+' term { $$ = f_new_inst(FI_ADD, $1, $3); } |
884 | | term '-' term { $$ = f_new_inst(FI_SUBTRACT, $1, $3); } | |
885 | | term '*' term { $$ = f_new_inst(FI_MULTIPLY, $1, $3); } | |
886 | | term '/' term { $$ = f_new_inst(FI_DIVIDE, $1, $3); } | |
887 | | term AND term { $$ = f_new_inst(FI_AND, $1, $3); } | |
888 | | term OR term { $$ = f_new_inst(FI_OR, $1, $3); } | |
889 | | term '=' term { $$ = f_new_inst(FI_EQ, $1, $3); } | |
890 | | term NEQ term { $$ = f_new_inst(FI_NEQ, $1, $3); } | |
891 | | term '<' term { $$ = f_new_inst(FI_LT, $1, $3); } | |
892 | | term LEQ term { $$ = f_new_inst(FI_LTE, $1, $3); } | |
893 | | term '>' term { $$ = f_new_inst(FI_LT, $3, $1); } | |
894 | | term GEQ term { $$ = f_new_inst(FI_LTE, $3, $1); } | |
895 | | term '~' term { $$ = f_new_inst(FI_MATCH, $1, $3); } | |
896 | | term NMA term { $$ = f_new_inst(FI_NOT_MATCH, $1, $3); } | |
897 | | '!' term { $$ = f_new_inst(FI_NOT, $2); } | |
898 | | DEFINED '(' term ')' { $$ = f_new_inst(FI_DEFINED, $3); } | |
23b1539b | 899 | |
c0e958e0 | 900 | | symbol_value { $$ = $1; } |
1183b6b2 | 901 | | constant { $$ = $1; } |
42a0c054 | 902 | | constructor { $$ = $1; } |
4515bdba | 903 | |
5a14df39 | 904 | | PREFERENCE { $$ = f_new_inst(FI_PREF_GET); } |
2bdb5e00 | 905 | |
c0e958e0 | 906 | | static_attr { $$ = f_new_inst(FI_RTA_GET, $1); } |
fe613ecd | 907 | |
c0e958e0 | 908 | | dynamic_attr { $$ = f_new_inst(FI_EA_GET, $1); } |
36bbfc70 | 909 | |
9b46748d MM |
910 | | term '.' IS_V4 { $$ = f_new_inst(FI_IS_V4, $1); } |
911 | | term '.' TYPE { $$ = f_new_inst(FI_TYPE, $1); } | |
912 | | term '.' IP { $$ = f_new_inst(FI_IP, $1); } | |
913 | | term '.' RD { $$ = f_new_inst(FI_ROUTE_DISTINGUISHER, $1); } | |
914 | | term '.' LEN { $$ = f_new_inst(FI_LENGTH, $1); } | |
915 | | term '.' MAXLEN { $$ = f_new_inst(FI_ROA_MAXLEN, $1); } | |
916 | | term '.' ASN { $$ = f_new_inst(FI_ROA_ASN, $1); } | |
917 | | term '.' SRC { $$ = f_new_inst(FI_SADR_SRC, $1); } | |
918 | | term '.' MASK '(' term ')' { $$ = f_new_inst(FI_IP_MASK, $1, $5); } | |
919 | | term '.' FIRST { $$ = f_new_inst(FI_AS_PATH_FIRST, $1); } | |
920 | | term '.' LAST { $$ = f_new_inst(FI_AS_PATH_LAST, $1); } | |
921 | | term '.' LAST_NONAGGREGATED { $$ = f_new_inst(FI_AS_PATH_LAST_NAG, $1); } | |
7f77e250 PM |
922 | |
923 | /* Communities */ | |
10a53608 | 924 | /* This causes one shift/reduce conflict |
c0e958e0 MM |
925 | | dynamic_attr '.' ADD '(' term ')' { } |
926 | | dynamic_attr '.' DELETE '(' term ')' { } | |
927 | | dynamic_attr '.' CONTAINS '(' term ')' { } | |
928 | | dynamic_attr '.' RESET{ } | |
10a53608 | 929 | */ |
7f77e250 | 930 | |
9b46748d MM |
931 | | '+' EMPTY '+' { $$ = f_new_inst(FI_CONSTANT, f_const_empty_path); } |
932 | | '-' EMPTY '-' { $$ = f_new_inst(FI_CONSTANT, f_const_empty_clist); } | |
933 | | '-' '-' EMPTY '-' '-' { $$ = f_new_inst(FI_CONSTANT, f_const_empty_eclist); } | |
934 | | '-' '-' '-' EMPTY '-' '-' '-' { $$ = f_new_inst(FI_CONSTANT, f_const_empty_lclist); } | |
935 | | PREPEND '(' term ',' term ')' { $$ = f_new_inst(FI_PATH_PREPEND, $3, $5); } | |
936 | | ADD '(' term ',' term ')' { $$ = f_new_inst(FI_CLIST_ADD, $3, $5); } | |
937 | | DELETE '(' term ',' term ')' { $$ = f_new_inst(FI_CLIST_DEL, $3, $5); } | |
938 | | FILTER '(' term ',' term ')' { $$ = f_new_inst(FI_CLIST_FILTER, $3, $5); } | |
afc54517 | 939 | |
9b46748d MM |
940 | | ROA_CHECK '(' rtable ')' { $$ = f_new_inst(FI_ROA_CHECK_IMPLICIT, $3); } |
941 | | ROA_CHECK '(' rtable ',' term ',' term ')' { $$ = f_new_inst(FI_ROA_CHECK_EXPLICIT, $5, $7, $3); } | |
af582c48 | 942 | |
9b46748d | 943 | | FORMAT '(' term ')' { $$ = f_new_inst(FI_FORMAT, $3); } |
9b0a0ba9 | 944 | |
a2d15746 | 945 | /* | term '.' LEN { $$->code = P('P','l'); } */ |
7f77e250 | 946 | |
4c553c5a | 947 | | function_call |
ba921648 PM |
948 | ; |
949 | ||
950 | break_command: | |
03e3d184 MM |
951 | QUITBIRD { $$ = F_QUITBIRD; } |
952 | | ACCEPT { $$ = F_ACCEPT; } | |
953 | | REJECT { $$ = F_REJECT; } | |
954 | | ERROR { $$ = F_ERROR; } | |
955 | | PRINT { $$ = F_NOP; } | |
956 | | PRINTN { $$ = F_NONL; } | |
ba921648 PM |
957 | ; |
958 | ||
23b1539b | 959 | print_one: |
9b46748d | 960 | term { $$ = f_new_inst(FI_PRINT, $1); } |
23b1539b PM |
961 | ; |
962 | ||
963 | print_list: /* EMPTY */ { $$ = NULL; } | |
995e5894 PM |
964 | | print_one { $$ = $1; } |
965 | | print_one ',' print_list { | |
23b1539b | 966 | if ($1) { |
4f082dfa | 967 | $1->next = $3; |
23b1539b | 968 | $$ = $1; |
995e5894 | 969 | } else $$ = $3; |
23b1539b PM |
970 | } |
971 | ; | |
972 | ||
c8cafc8e | 973 | var_listn: term { |
9b46748d | 974 | $$ = $1; |
d3dd620b | 975 | } |
6dc7a0cb | 976 | | term ',' var_listn { |
9b46748d | 977 | $$ = $1; |
4f082dfa | 978 | $$->next = $3; |
6542ece9 PM |
979 | } |
980 | ; | |
981 | ||
6dc7a0cb PM |
982 | var_list: /* EMPTY */ { $$ = NULL; } |
983 | | var_listn { $$ = $1; } | |
984 | ; | |
985 | ||
23b1539b | 986 | cmd: |
49955645 | 987 | IF term THEN block { |
9b46748d | 988 | $$ = f_new_inst(FI_CONDITION, $2, $4, NULL); |
23b1539b | 989 | } |
49955645 | 990 | | IF term THEN block ELSE block { |
9b46748d | 991 | $$ = f_new_inst(FI_CONDITION, $2, $4, $6); |
23b1539b | 992 | } |
c0e958e0 | 993 | | CF_SYM_ATTRIBUTE '=' term ';' { |
0b39b1cb | 994 | $$ = f_new_inst(FI_EA_SET, $3, *$1->attribute); |
c0e958e0 MM |
995 | } |
996 | | CF_SYM_VARIABLE '=' term ';' { | |
997 | $$ = f_new_inst(FI_SET, $3, $1); | |
b9d70dc8 | 998 | } |
2d496d20 | 999 | | RETURN term ';' { |
d4d75628 | 1000 | DBG( "Ook, we'll return the value\n" ); |
9b46748d | 1001 | $$ = f_new_inst(FI_RETURN, $2); |
2d496d20 | 1002 | } |
c0e958e0 MM |
1003 | | dynamic_attr '=' term ';' { |
1004 | $$ = f_new_inst(FI_EA_SET, $3, $1); | |
f31156ca | 1005 | } |
c0e958e0 MM |
1006 | | static_attr '=' term ';' { |
1007 | if ($1.readonly) | |
0dc4431c | 1008 | cf_error( "This static attribute is read-only."); |
c0e958e0 | 1009 | $$ = f_new_inst(FI_RTA_SET, $3, $1); |
0dc4431c PM |
1010 | } |
1011 | | PREFERENCE '=' term ';' { | |
9b46748d | 1012 | $$ = f_new_inst(FI_PREF_SET, $3); |
c8cafc8e | 1013 | } |
c0e958e0 MM |
1014 | | UNSET '(' dynamic_attr ')' ';' { |
1015 | $$ = f_new_inst(FI_EA_UNSET, $3); | |
c7b43f33 | 1016 | } |
9b46748d MM |
1017 | | break_command print_list ';' { $$ = f_new_inst(FI_PRINT_AND_DIE, $2, $1); } |
1018 | | function_call ';' { $$ = f_new_inst(FI_DROP_RESULT, $1); } | |
7db7b7db | 1019 | | CASE term '{' switch_body '}' { |
9b46748d | 1020 | $$ = f_new_inst(FI_SWITCH, $2, build_tree($4)); |
7db7b7db | 1021 | } |
7d6eebae | 1022 | |
c0e958e0 MM |
1023 | | dynamic_attr '.' EMPTY ';' { $$ = f_generate_empty($1); } |
1024 | | dynamic_attr '.' PREPEND '(' term ')' ';' { $$ = f_generate_complex( FI_PATH_PREPEND, $1, $5 ); } | |
1025 | | dynamic_attr '.' ADD '(' term ')' ';' { $$ = f_generate_complex( FI_CLIST_ADD, $1, $5 ); } | |
1026 | | dynamic_attr '.' DELETE '(' term ')' ';' { $$ = f_generate_complex( FI_CLIST_DEL, $1, $5 ); } | |
1027 | | dynamic_attr '.' FILTER '(' term ')' ';' { $$ = f_generate_complex( FI_CLIST_FILTER, $1, $5 ); } | |
3ec0bedc | 1028 | | BT_ASSERT '(' get_cf_position term get_cf_position ')' ';' { $$ = assert_done($4, $3 + 1, $5 - 1); } |
c0e958e0 | 1029 | | BT_CHECK_ASSIGN '(' get_cf_position lvalue get_cf_position ',' term ')' ';' { $$ = assert_assign(&$4, $7, $3 + 1, $5 - 1); } |
9b0a0ba9 OZ |
1030 | ; |
1031 | ||
1032 | get_cf_position: | |
1033 | { | |
1034 | $$ = cf_text; | |
1035 | }; | |
1036 | ||
c0e958e0 MM |
1037 | lvalue: |
1038 | CF_SYM_VARIABLE { $$ = (struct f_lval) { .type = F_LVAL_VARIABLE, .sym = $1 }; } | |
1039 | | PREFERENCE { $$ = (struct f_lval) { .type = F_LVAL_PREFERENCE }; } | |
1040 | | static_attr { $$ = (struct f_lval) { .type = F_LVAL_SA, .sa = $1 }; } | |
1041 | | dynamic_attr { $$ = (struct f_lval) { .type = F_LVAL_EA, .da = $1 }; }; | |
9b0a0ba9 | 1042 | |
b9d70dc8 | 1043 | CF_END |