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Commit | Line | Data |
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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 | ||
96d757c1 JMM |
18 | static uint decls_count; |
19 | ||
b8cc390e OZ |
20 | static inline u32 pair(u32 a, u32 b) { return (a << 16) | b; } |
21 | static inline u32 pair_a(u32 p) { return p >> 16; } | |
22 | static inline u32 pair_b(u32 p) { return p & 0xFFFF; } | |
23 | ||
a84b8b6e MM |
24 | #define f_generate_complex(fi_code, da, arg) \ |
25 | f_new_inst(FI_EA_SET, f_new_inst(fi_code, f_new_inst(FI_EA_GET, da), arg), da) | |
26 | ||
b8cc390e OZ |
27 | /* |
28 | * Sets and their items are during parsing handled as lists, linked | |
29 | * through left ptr. The first item in a list also contains a pointer | |
30 | * to the last item in a list (right ptr). For convenience, even items | |
31 | * are handled as one-item lists. Lists are merged by f_merge_items(). | |
32 | */ | |
b2f00837 OZ |
33 | static int |
34 | f_valid_set_type(int type) | |
35 | { | |
36 | switch (type) | |
37 | { | |
38 | case T_INT: | |
39 | case T_PAIR: | |
40 | case T_QUAD: | |
41 | case T_ENUM: | |
42 | case T_IP: | |
43 | case T_EC: | |
66dbdbd9 | 44 | case T_LC: |
83715aa8 | 45 | case T_RD: |
b2f00837 OZ |
46 | return 1; |
47 | ||
48 | default: | |
49 | return 0; | |
50 | } | |
51 | } | |
b8cc390e OZ |
52 | |
53 | static inline struct f_tree * | |
54 | f_new_item(struct f_val from, struct f_val to) | |
92a72a4c | 55 | { |
b8cc390e OZ |
56 | struct f_tree *t = f_new_tree(); |
57 | t->right = t; | |
58 | t->from = from; | |
59 | t->to = to; | |
60 | return t; | |
61 | } | |
92a72a4c | 62 | |
b8cc390e OZ |
63 | static inline struct f_tree * |
64 | f_merge_items(struct f_tree *a, struct f_tree *b) | |
65 | { | |
66 | if (!a) return b; | |
67 | a->right->left = b; | |
68 | a->right = b->right; | |
69 | b->right = NULL; | |
70 | return a; | |
71 | } | |
92a72a4c | 72 | |
b8cc390e OZ |
73 | static inline struct f_tree * |
74 | f_new_pair_item(int fa, int ta, int fb, int tb) | |
75 | { | |
60566c5c OZ |
76 | check_u16(fa); |
77 | check_u16(ta); | |
78 | check_u16(fb); | |
79 | check_u16(tb); | |
80 | ||
81 | if ((ta < fa) || (tb < fb)) | |
82 | cf_error( "From value cannot be higher that To value in pair sets"); | |
83 | ||
b8cc390e OZ |
84 | struct f_tree *t = f_new_tree(); |
85 | t->right = t; | |
86 | t->from.type = t->to.type = T_PAIR; | |
87 | t->from.val.i = pair(fa, fb); | |
88 | t->to.val.i = pair(ta, tb); | |
89 | return t; | |
92a72a4c OZ |
90 | } |
91 | ||
b8cc390e OZ |
92 | static inline struct f_tree * |
93 | f_new_pair_set(int fa, int ta, int fb, int tb) | |
4fc36f39 | 94 | { |
60566c5c OZ |
95 | check_u16(fa); |
96 | check_u16(ta); | |
97 | check_u16(fb); | |
98 | check_u16(tb); | |
c454872f | 99 | |
b8cc390e OZ |
100 | if ((ta < fa) || (tb < fb)) |
101 | cf_error( "From value cannot be higher that To value in pair sets"); | |
c454872f | 102 | |
60566c5c OZ |
103 | struct f_tree *lst = NULL; |
104 | int i; | |
105 | ||
b8cc390e OZ |
106 | for (i = fa; i <= ta; i++) |
107 | lst = f_merge_items(lst, f_new_pair_item(i, i, fb, tb)); | |
108 | ||
109 | return lst; | |
4fc36f39 OF |
110 | } |
111 | ||
60566c5c | 112 | #define CC_ALL 0xFFFF |
42a0c054 | 113 | #define EC_ALL 0xFFFFFFFF |
60566c5c | 114 | #define LC_ALL 0xFFFFFFFF |
42a0c054 OZ |
115 | |
116 | static struct f_tree * | |
117 | f_new_ec_item(u32 kind, u32 ipv4_used, u32 key, u32 vf, u32 vt) | |
118 | { | |
119 | u64 fm, to; | |
120 | ||
e46128fb | 121 | if ((kind != EC_GENERIC) && (ipv4_used || (key >= 0x10000))) { |
42a0c054 OZ |
122 | check_u16(vf); |
123 | if (vt == EC_ALL) | |
124 | vt = 0xFFFF; | |
125 | else | |
126 | check_u16(vt); | |
127 | } | |
128 | ||
129 | if (kind == EC_GENERIC) { | |
130 | fm = ec_generic(key, vf); | |
131 | to = ec_generic(key, vt); | |
132 | } | |
133 | else if (ipv4_used) { | |
134 | fm = ec_ip4(kind, key, vf); | |
135 | to = ec_ip4(kind, key, vt); | |
136 | } | |
137 | else if (key < 0x10000) { | |
138 | fm = ec_as2(kind, key, vf); | |
139 | to = ec_as2(kind, key, vt); | |
140 | } | |
141 | else { | |
142 | fm = ec_as4(kind, key, vf); | |
143 | to = ec_as4(kind, key, vt); | |
144 | } | |
145 | ||
146 | struct f_tree *t = f_new_tree(); | |
147 | t->right = t; | |
148 | t->from.type = t->to.type = T_EC; | |
149 | t->from.val.ec = fm; | |
150 | t->to.val.ec = to; | |
151 | return t; | |
152 | } | |
153 | ||
60566c5c OZ |
154 | static struct f_tree * |
155 | f_new_lc_item(u32 f1, u32 t1, u32 f2, u32 t2, u32 f3, u32 t3) | |
156 | { | |
157 | struct f_tree *t = f_new_tree(); | |
158 | t->right = t; | |
159 | t->from.type = t->to.type = T_LC; | |
160 | t->from.val.lc = (lcomm) {f1, f2, f3}; | |
161 | t->to.val.lc = (lcomm) {t1, t2, t3}; | |
162 | return t; | |
163 | } | |
164 | ||
42a0c054 | 165 | static inline struct f_inst * |
5a14df39 | 166 | f_generate_empty(struct f_dynamic_attr dyn) |
5e173e9f | 167 | { |
9b46748d | 168 | struct f_val empty; |
42a0c054 | 169 | |
5a14df39 | 170 | switch (dyn.type & EAF_TYPE_MASK) { |
42a0c054 | 171 | case EAF_TYPE_AS_PATH: |
9b46748d | 172 | empty = f_const_empty_path; |
42a0c054 OZ |
173 | break; |
174 | case EAF_TYPE_INT_SET: | |
9b46748d | 175 | empty = f_const_empty_clist; |
42a0c054 OZ |
176 | break; |
177 | case EAF_TYPE_EC_SET: | |
9b46748d | 178 | empty = f_const_empty_eclist; |
42a0c054 | 179 | break; |
66dbdbd9 | 180 | case EAF_TYPE_LC_SET: |
9b46748d | 181 | empty = f_const_empty_lclist; |
66dbdbd9 | 182 | break; |
42a0c054 OZ |
183 | default: |
184 | cf_error("Can't empty that attribute"); | |
185 | } | |
186 | ||
a84b8b6e | 187 | return f_new_inst(FI_EA_SET, f_new_inst(FI_CONSTANT, empty), dyn); |
42a0c054 OZ |
188 | } |
189 | ||
9b46748d | 190 | #if 0 |
42a0c054 OZ |
191 | |
192 | static inline struct f_inst * | |
193 | f_generate_dpair(struct f_inst *t1, struct f_inst *t2) | |
194 | { | |
195 | struct f_inst *rv; | |
196 | ||
5a14df39 | 197 | if ((t1->fi_code == FI_CONSTANT) && (t2->fi_code == FI_CONSTANT)) { |
ca2ee91a | 198 | if ((t1->val.type != T_INT) || (t2->val.type != T_INT)) |
42a0c054 OZ |
199 | cf_error( "Can't operate with value of non-integer type in pair constructor"); |
200 | ||
7f0ac737 MM |
201 | check_u16(t1->a[1].i); |
202 | check_u16(t2->a[1].i); | |
42a0c054 | 203 | |
5a14df39 | 204 | rv = f_new_inst(FI_CONSTANT); |
ca2ee91a MM |
205 | rv->val = (struct f_val) { |
206 | .type = T_PAIR, | |
207 | .val.i = pair(t1->a[1].i, t2->a[1].i), | |
208 | }; | |
42a0c054 OZ |
209 | } |
210 | else { | |
5a14df39 | 211 | rv = f_new_inst(FI_PAIR_CONSTRUCT); |
7f0ac737 MM |
212 | rv->a[0].p = t1; |
213 | rv->a[1].p = t2; | |
42a0c054 OZ |
214 | } |
215 | ||
216 | return rv; | |
217 | } | |
218 | ||
219 | static inline struct f_inst * | |
220 | f_generate_ec(u16 kind, struct f_inst *tk, struct f_inst *tv) | |
221 | { | |
222 | struct f_inst *rv; | |
223 | int c1 = 0, c2 = 0, ipv4_used = 0; | |
224 | u32 key = 0, val2 = 0; | |
225 | ||
5a14df39 | 226 | if (tk->fi_code == FI_CONSTANT) { |
42a0c054 | 227 | c1 = 1; |
ca2ee91a | 228 | struct f_val *val = &(tk->val); |
1103b32e OZ |
229 | |
230 | if (val->type == T_INT) { | |
231 | ipv4_used = 0; key = val->val.i; | |
232 | } | |
ca2ee91a | 233 | else if (tk->val.type == T_QUAD) { |
1103b32e OZ |
234 | ipv4_used = 1; key = val->val.i; |
235 | } | |
5e173e9f JMM |
236 | else if ((val->type == T_IP) && ipa_is_ip4(val->val.ip)) { |
237 | ipv4_used = 1; key = ipa_to_u32(val->val.ip); | |
42a0c054 OZ |
238 | } |
239 | else | |
240 | cf_error("Can't operate with key of non-integer/IPv4 type in EC constructor"); | |
241 | } | |
42a0c054 | 242 | |
5a14df39 | 243 | if (tv->fi_code == FI_CONSTANT) { |
ca2ee91a | 244 | if (tv->val.type != T_INT) |
42a0c054 OZ |
245 | cf_error("Can't operate with value of non-integer type in EC constructor"); |
246 | c2 = 1; | |
ca2ee91a | 247 | val2 = tv->val.val.i; |
42a0c054 OZ |
248 | } |
249 | ||
250 | if (c1 && c2) { | |
251 | u64 ec; | |
5e173e9f | 252 | |
42a0c054 OZ |
253 | if (kind == EC_GENERIC) { |
254 | ec = ec_generic(key, val2); | |
255 | } | |
256 | else if (ipv4_used) { | |
257 | check_u16(val2); | |
258 | ec = ec_ip4(kind, key, val2); | |
259 | } | |
260 | else if (key < 0x10000) { | |
261 | ec = ec_as2(kind, key, val2); | |
262 | } | |
263 | else { | |
264 | check_u16(val2); | |
265 | ec = ec_as4(kind, key, val2); | |
266 | } | |
267 | ||
ca2ee91a MM |
268 | rv = f_new_inst(FI_CONSTANT); |
269 | rv->val = (struct f_val) { | |
270 | .type = T_EC, | |
271 | .val.ec = ec, | |
272 | }; | |
42a0c054 OZ |
273 | } |
274 | else { | |
5a14df39 | 275 | rv = f_new_inst(FI_EC_CONSTRUCT); |
42a0c054 | 276 | rv->aux = kind; |
7f0ac737 MM |
277 | rv->a[0].p = tk; |
278 | rv->a[1].p = tv; | |
42a0c054 OZ |
279 | } |
280 | ||
281 | return rv; | |
78e33c29 | 282 | } |
42a0c054 | 283 | |
66dbdbd9 OZ |
284 | static inline struct f_inst * |
285 | f_generate_lc(struct f_inst *t1, struct f_inst *t2, struct f_inst *t3) | |
286 | { | |
287 | struct f_inst *rv; | |
288 | ||
5a14df39 | 289 | if ((t1->fi_code == FI_CONSTANT) && (t2->fi_code == FI_CONSTANT) && (t3->fi_code == FI_CONSTANT)) { |
ca2ee91a | 290 | if ((t1->val.type != T_INT) || (t2->val.type != T_INT) || (t3->val.type != T_INT)) |
66dbdbd9 OZ |
291 | cf_error( "LC - Can't operate with value of non-integer type in tuple constructor"); |
292 | ||
ca2ee91a MM |
293 | rv = f_new_inst(FI_CONSTANT); |
294 | rv->val = (struct f_val) { | |
295 | .type = T_LC, | |
296 | .val.lc = (lcomm) { t1->a[1].i, t2->a[1].i, t3->a[1].i }, | |
297 | }; | |
66dbdbd9 OZ |
298 | } |
299 | else | |
300 | { | |
478f9bab | 301 | rv = f_new_inst(FI_LC_CONSTRUCT); |
7f0ac737 MM |
302 | rv->a[0].p = t1; |
303 | rv->a[1].p = t2; | |
304 | rv->a[2].p = t3; | |
66dbdbd9 OZ |
305 | } |
306 | ||
307 | return rv; | |
308 | } | |
309 | ||
e8bc64e3 | 310 | static inline struct f_inst * |
4c553c5a | 311 | f_generate_path_mask(struct f_inst *t) |
e8bc64e3 | 312 | { |
4c553c5a MM |
313 | uint len = 0; |
314 | uint dyn = 0; | |
315 | for (const struct f_inst *tt = t; tt; tt = tt->next) { | |
316 | if (tt->fi_code != FI_CONSTANT) | |
317 | dyn++; | |
318 | len++; | |
319 | } | |
320 | ||
321 | if (dyn) { | |
322 | struct f_inst *pmc = f_new_inst(FI_PATHMASK_CONSTRUCT); | |
323 | pmc->a[0].p = t; | |
324 | pmc->a[1].i = len; | |
325 | return pmc; | |
e8bc64e3 JMM |
326 | } |
327 | ||
4c553c5a | 328 | struct f_path_mask *pm = cfg_allocz(sizeof(struct f_path_mask) + len * sizeof(struct f_path_mask_item)); |
e8bc64e3 | 329 | |
4c553c5a MM |
330 | uint i = 0; |
331 | for (const struct f_inst *tt = t; tt; tt = tt->next) | |
332 | pm->item[i++] = tt->val.val.pmi; | |
333 | ||
334 | pm->len = i; | |
335 | struct f_inst *pmc = f_new_inst(FI_CONSTANT); | |
336 | pmc->val = (struct f_val) { .type = T_PATH_MASK, .val.path_mask = pm, }; | |
337 | ||
338 | return pmc; | |
e8bc64e3 | 339 | } |
42a0c054 | 340 | |
9b46748d MM |
341 | #endif |
342 | ||
9b0a0ba9 OZ |
343 | /* |
344 | * Remove all new lines and doubled whitespaces | |
345 | * and convert all tabulators to spaces | |
346 | * and return a copy of string | |
347 | */ | |
348 | char * | |
349 | assert_copy_expr(const char *start, size_t len) | |
350 | { | |
351 | /* XXX: Allocates maybe a little more memory than we really finally need */ | |
352 | char *str = cfg_alloc(len + 1); | |
353 | ||
354 | char *dst = str; | |
355 | const char *src = start - 1; | |
356 | const char *end = start + len; | |
357 | while (++src < end) | |
358 | { | |
359 | if (*src == '\n') | |
360 | continue; | |
361 | ||
362 | /* Skip doubled whitespaces */ | |
363 | if (src != start) | |
364 | { | |
365 | const char *prev = src - 1; | |
366 | if ((*src == ' ' || *src == '\t') && (*prev == ' ' || *prev == '\t')) | |
367 | continue; | |
368 | } | |
369 | ||
370 | if (*src == '\t') | |
371 | *dst = ' '; | |
372 | else | |
373 | *dst = *src; | |
374 | ||
375 | dst++; | |
376 | } | |
377 | *dst = '\0'; | |
378 | ||
379 | return str; | |
380 | } | |
381 | ||
382 | /* | |
383 | * assert_done - create f_instruction of bt_assert | |
384 | * @expr: expression in bt_assert() | |
385 | * @start: pointer to first char of test expression | |
386 | * @end: pointer to the last char of test expression | |
387 | */ | |
388 | static struct f_inst * | |
389 | assert_done(struct f_inst *expr, const char *start, const char *end) | |
390 | { | |
9b46748d MM |
391 | return f_new_inst(FI_ASSERT, expr, |
392 | (end >= start) ? | |
393 | assert_copy_expr(start, end - start + 1) | |
394 | : "???"); | |
9b0a0ba9 | 395 | } |
42a0c054 | 396 | |
c0e958e0 MM |
397 | static struct f_inst * |
398 | assert_assign(struct f_lval *lval, struct f_inst *expr, const char *start, const char *end) | |
399 | { | |
a84b8b6e | 400 | struct f_inst *setter, *getter, *checker; |
c0e958e0 MM |
401 | switch (lval->type) { |
402 | case F_LVAL_VARIABLE: | |
a84b8b6e | 403 | setter = f_new_inst(FI_VAR_SET, expr, lval->sym); |
96d757c1 | 404 | getter = f_new_inst(FI_VAR_GET, lval->sym); |
c0e958e0 MM |
405 | break; |
406 | case F_LVAL_PREFERENCE: | |
a84b8b6e | 407 | setter = f_new_inst(FI_PREF_SET, expr); |
c0e958e0 MM |
408 | getter = f_new_inst(FI_PREF_GET); |
409 | break; | |
410 | case F_LVAL_SA: | |
a84b8b6e | 411 | setter = f_new_inst(FI_RTA_SET, expr, lval->sa); |
c0e958e0 MM |
412 | getter = f_new_inst(FI_RTA_GET, lval->sa); |
413 | break; | |
414 | case F_LVAL_EA: | |
a84b8b6e | 415 | setter = f_new_inst(FI_EA_SET, expr, lval->da); |
c0e958e0 MM |
416 | getter = f_new_inst(FI_EA_GET, lval->da); |
417 | break; | |
a84b8b6e MM |
418 | default: |
419 | bug("Unknown lval type"); | |
c0e958e0 MM |
420 | } |
421 | ||
a84b8b6e | 422 | checker = f_new_inst(FI_EQ, expr, getter); |
4f082dfa | 423 | setter->next = checker; |
a84b8b6e | 424 | |
c0e958e0 MM |
425 | return assert_done(setter, start, end); |
426 | } | |
427 | ||
b9d70dc8 PM |
428 | CF_DECLS |
429 | ||
e4a73dbf | 430 | CF_KEYWORDS(FUNCTION, PRINT, PRINTN, UNSET, RETURN, |
ba921648 | 431 | ACCEPT, REJECT, ERROR, QUITBIRD, |
8c9986d3 | 432 | INT, BOOL, IP, TYPE, PREFIX, RD, PAIR, QUAD, EC, LC, |
66dbdbd9 | 433 | SET, STRING, BGPMASK, BGPPATH, CLIST, ECLIST, LCLIST, |
7db7b7db | 434 | IF, THEN, ELSE, CASE, |
42a0c054 | 435 | TRUE, FALSE, RT, RO, UNKNOWN, GENERIC, |
5b208e29 | 436 | FROM, GW, NET, MASK, PROTO, SOURCE, SCOPE, DEST, IFNAME, IFINDEX, |
a5fc5958 | 437 | PREFERENCE, |
b24b7811 | 438 | ROA_CHECK, ASN, SRC, |
61e501da | 439 | IS_V4, IS_V6, |
e58f8c28 | 440 | LEN, MAXLEN, |
f4536657 | 441 | DEFINED, |
7f77e250 | 442 | ADD, DELETE, CONTAINS, RESET, |
9c9cc35c | 443 | PREPEND, FIRST, LAST, LAST_NONAGGREGATED, MATCH, |
afc54517 | 444 | EMPTY, |
265419a3 | 445 | FILTER, WHERE, EVAL, ATTRIBUTE, |
132529ce | 446 | BT_ASSERT, BT_TEST_SUITE, BT_CHECK_ASSIGN, BT_TEST_SAME, FORMAT) |
b9d70dc8 | 447 | |
f4536657 | 448 | %nonassoc THEN |
4ed8718a | 449 | %nonassoc ELSE |
f4536657 | 450 | |
96d757c1 JMM |
451 | %type <xp> cmds_int |
452 | %type <x> term block cmd cmds constant constructor print_one print_list var_list function_call symbol_value bgp_path_expr bgp_path bgp_path_tail | |
5a14df39 MJM |
453 | %type <fda> dynamic_attr |
454 | %type <fsa> static_attr | |
0b39b1cb | 455 | %type <f> filter where_filter |
96d757c1 | 456 | %type <fl> filter_body function_body |
c0e958e0 | 457 | %type <flv> lvalue |
96d757c1 | 458 | %type <i> type function_params |
9b46748d MM |
459 | %type <ecs> ec_kind |
460 | %type <fret> break_command | |
60566c5c OZ |
461 | %type <i32> cnum |
462 | %type <e> pair_item ec_item lc_item set_item switch_item set_items switch_items switch_body | |
b1a597e0 | 463 | %type <trie> fprefix_set |
5e173e9f JMM |
464 | %type <v> set_atom switch_atom fipa |
465 | %type <px> fprefix | |
9b0a0ba9 | 466 | %type <t> get_cf_position |
b9d70dc8 PM |
467 | |
468 | CF_GRAMMAR | |
469 | ||
f851f0d7 | 470 | conf: filter_def ; |
e0f2e42f | 471 | filter_def: |
0b39b1cb | 472 | FILTER CF_SYM_VOID { $2 = cf_define_symbol($2, SYM_FILTER, filter, NULL); cf_push_scope( $2 ); } |
b2b7bbfc | 473 | filter_body { |
0b39b1cb | 474 | struct filter *f = cfg_alloc(sizeof(struct filter)); |
f249d0b8 | 475 | *f = (struct filter) { .sym = $2, .root = $4 }; |
0b39b1cb MM |
476 | $2->filter = f; |
477 | ||
ae3e1af2 | 478 | cf_pop_scope(); |
b9d70dc8 PM |
479 | } |
480 | ; | |
481 | ||
f851f0d7 | 482 | conf: filter_eval ; |
1c20608e | 483 | filter_eval: |
23e3b1e6 | 484 | EVAL term { f_eval_int(f_linearize($2)); } |
1c20608e MM |
485 | ; |
486 | ||
265419a3 | 487 | conf: custom_attr ; |
c0e958e0 | 488 | custom_attr: ATTRIBUTE type CF_SYM_VOID ';' { |
0b39b1cb | 489 | cf_define_symbol($3, SYM_ATTRIBUTE, attribute, ca_lookup(new_config->pool, $3->name, $2)->fda); |
265419a3 MM |
490 | }; |
491 | ||
f851f0d7 | 492 | conf: bt_test_suite ; |
9b0a0ba9 | 493 | bt_test_suite: |
9eef9c64 MM |
494 | BT_TEST_SUITE '(' CF_SYM_KNOWN ',' text ')' { |
495 | cf_assert_symbol($3, SYM_FUNCTION); | |
132529ce | 496 | struct f_bt_test_suite *t = cfg_allocz(sizeof(struct f_bt_test_suite)); |
0b39b1cb | 497 | t->fn = $3->function; |
9b0a0ba9 OZ |
498 | t->fn_name = $3->name; |
499 | t->dsc = $5; | |
500 | ||
501 | add_tail(&new_config->tests, &t->n); | |
502 | } | |
503 | ; | |
504 | ||
132529ce MM |
505 | conf: bt_test_same ; |
506 | bt_test_same: | |
9eef9c64 MM |
507 | BT_TEST_SAME '(' CF_SYM_KNOWN ',' CF_SYM_KNOWN ',' NUM ')' { |
508 | cf_assert_symbol($3, SYM_FUNCTION); | |
509 | cf_assert_symbol($5, SYM_FUNCTION); | |
132529ce | 510 | struct f_bt_test_suite *t = cfg_allocz(sizeof(struct f_bt_test_suite)); |
0b39b1cb MM |
511 | t->fn = $3->function; |
512 | t->cmp = $5->function; | |
132529ce MM |
513 | t->result = $7; |
514 | t->fn_name = $3->name; | |
515 | t->dsc = $5->name; | |
516 | add_tail(&new_config->tests, &t->n); | |
517 | } | |
518 | ; | |
519 | ||
ba921648 PM |
520 | type: |
521 | INT { $$ = T_INT; } | |
522 | | BOOL { $$ = T_BOOL; } | |
523 | | IP { $$ = T_IP; } | |
8c9986d3 | 524 | | RD { $$ = T_RD; } |
5e173e9f | 525 | | PREFIX { $$ = T_NET; } |
ba921648 | 526 | | PAIR { $$ = T_PAIR; } |
126683fe | 527 | | QUAD { $$ = T_QUAD; } |
42a0c054 | 528 | | EC { $$ = T_EC; } |
66dbdbd9 | 529 | | LC { $$ = T_LC; } |
ba921648 | 530 | | STRING { $$ = T_STRING; } |
10a53608 PM |
531 | | BGPMASK { $$ = T_PATH_MASK; } |
532 | | BGPPATH { $$ = T_PATH; } | |
533 | | CLIST { $$ = T_CLIST; } | |
42a0c054 | 534 | | ECLIST { $$ = T_ECLIST; } |
66dbdbd9 | 535 | | LCLIST { $$ = T_LCLIST; } |
c8cafc8e | 536 | | type SET { |
ba921648 | 537 | switch ($1) { |
b1a597e0 | 538 | case T_INT: |
b1a597e0 | 539 | case T_PAIR: |
126683fe | 540 | case T_QUAD: |
42a0c054 | 541 | case T_EC: |
66dbdbd9 | 542 | case T_LC: |
83715aa8 | 543 | case T_RD: |
126683fe | 544 | case T_IP: |
b1a597e0 OZ |
545 | $$ = T_SET; |
546 | break; | |
547 | ||
5e173e9f | 548 | case T_NET: |
b1a597e0 OZ |
549 | $$ = T_PREFIX_SET; |
550 | break; | |
551 | ||
ba921648 | 552 | default: |
a5a947d4 | 553 | cf_error( "You can't create sets of this type." ); |
ba921648 | 554 | } |
b1a597e0 | 555 | } |
ba921648 PM |
556 | ; |
557 | ||
96d757c1 JMM |
558 | /* Declarations with ';' at the end */ |
559 | decls: | |
560 | /* EMPTY */ | |
561 | | declsn ';' | |
6dc7a0cb PM |
562 | ; |
563 | ||
32793ab6 | 564 | /* Declarations that have no ';' at the end. */ |
96d757c1 JMM |
565 | declsn: |
566 | type CF_SYM_VOID { | |
567 | cf_define_symbol($2, SYM_VARIABLE | $1, offset, decls_count++); | |
6dc7a0cb | 568 | } |
96d757c1 JMM |
569 | | declsn ';' type CF_SYM_VOID { |
570 | if (decls_count >= 0xff) cf_error("Too many declarations, at most 255 allowed"); | |
571 | cf_define_symbol($4, SYM_VARIABLE | $3, offset, decls_count++); | |
e0f2e42f MM |
572 | } |
573 | ; | |
574 | ||
96d757c1 JMM |
575 | filter_body: { decls_count = 0; } function_body { $$ = $2; } ; |
576 | ||
e0f2e42f | 577 | filter: |
9eef9c64 MM |
578 | CF_SYM_KNOWN { |
579 | cf_assert_symbol($1, SYM_FILTER); | |
0b39b1cb MM |
580 | $$ = $1->filter; |
581 | } | |
582 | | filter_body { | |
583 | struct filter *f = cfg_alloc(sizeof(struct filter)); | |
584 | *f = (struct filter) { .root = $1 }; | |
585 | $$ = f; | |
e0f2e42f | 586 | } |
e0f2e42f MM |
587 | ; |
588 | ||
430da60f MM |
589 | where_filter: |
590 | WHERE term { | |
224b77d4 | 591 | /* Construct 'IF term THEN { ACCEPT; } ELSE { REJECT; }' */ |
9b46748d | 592 | $$ = f_new_where($2); |
4c553c5a | 593 | } |
430da60f MM |
594 | ; |
595 | ||
ba921648 | 596 | function_params: |
96d757c1 JMM |
597 | '(' declsn ')' { $$ = decls_count; } |
598 | | '(' ')' { $$ = 0; } | |
ba921648 | 599 | ; |
b9d70dc8 | 600 | |
ba921648 PM |
601 | function_body: |
602 | decls '{' cmds '}' { | |
23e3b1e6 | 603 | $$ = f_linearize($3); |
96d757c1 | 604 | $$->vars = decls_count; |
84c7e194 | 605 | } |
ba921648 PM |
606 | ; |
607 | ||
f851f0d7 | 608 | conf: function_def ; |
ba921648 | 609 | function_def: |
c0e958e0 | 610 | FUNCTION CF_SYM_VOID { DBG( "Beginning of function %s\n", $2->name ); |
0b39b1cb | 611 | $2 = cf_define_symbol($2, SYM_FUNCTION, function, NULL); |
bf3eb98e | 612 | cf_push_scope($2); |
96d757c1 | 613 | decls_count = 0; |
bf3eb98e | 614 | } function_params function_body { |
96d757c1 JMM |
615 | $5->vars -= $4; |
616 | $5->args = $4; | |
617 | $2->function = $5; | |
ae3e1af2 | 618 | cf_pop_scope(); |
ba921648 PM |
619 | } |
620 | ; | |
621 | ||
622 | /* Programs */ | |
623 | ||
624 | cmds: /* EMPTY */ { $$ = NULL; } | |
9b46748d | 625 | | cmds_int { $$ = $1[0]; } |
5f47c4c1 OZ |
626 | ; |
627 | ||
9b46748d | 628 | cmds_int: cmd { $$[0] = $$[1] = $1; } |
4f082dfa | 629 | | cmds_int cmd { $$[1] = $2; $1[1]->next = $2; $$[0] = $1[0]; } |
84c7e194 PM |
630 | ; |
631 | ||
2575593e | 632 | block: |
ba921648 | 633 | cmd { |
2575593e PM |
634 | $$=$1; |
635 | } | |
636 | | '{' cmds '}' { | |
637 | $$=$2; | |
638 | } | |
639 | ; | |
640 | ||
d3dd620b PM |
641 | /* |
642 | * Complex types, their bison value is struct f_val | |
643 | */ | |
e3f2d5fc | 644 | fipa: |
04632fd7 OZ |
645 | IP4 %prec PREFIX_DUMMY { $$.type = T_IP; $$.val.ip = ipa_from_ip4($1); } |
646 | | IP6 %prec PREFIX_DUMMY { $$.type = T_IP; $$.val.ip = ipa_from_ip6($1); } | |
d3dd620b PM |
647 | ; |
648 | ||
b8cc390e OZ |
649 | |
650 | ||
651 | /* | |
652 | * Set constants. They are also used in switch cases. We use separate | |
653 | * nonterminals for switch (set_atom/switch_atom, set_item/switch_item ...) | |
654 | * to elude a collision between symbol (in expr) in set_atom and symbol | |
655 | * as a function call in switch case cmds. | |
656 | */ | |
657 | ||
38506f71 | 658 | set_atom: |
83715aa8 OZ |
659 | NUM { $$.type = T_INT; $$.val.i = $1; } |
660 | | fipa { $$ = $1; } | |
661 | | VPN_RD { $$.type = T_RD; $$.val.ec = $1; } | |
662 | | ENUM { $$.type = pair_a($1); $$.val.i = pair_b($1); } | |
b2f00837 | 663 | | '(' term ')' { |
23e3b1e6 | 664 | if (f_eval(f_linearize($2), cfg_mem, &($$)) > F_RETURN) cf_error("Runtime error"); |
b2f00837 OZ |
665 | if (!f_valid_set_type($$.type)) cf_error("Set-incompatible type"); |
666 | } | |
9eef9c64 MM |
667 | | CF_SYM_KNOWN { |
668 | cf_assert_symbol($1, SYM_CONSTANT); | |
b2f00837 | 669 | if (!f_valid_set_type(SYM_TYPE($1))) cf_error("%s: set-incompatible type", $1->name); |
0b39b1cb | 670 | $$ = *$1->val; |
b2f00837 | 671 | } |
b8cc390e | 672 | ; |
38506f71 | 673 | |
b8cc390e OZ |
674 | switch_atom: |
675 | NUM { $$.type = T_INT; $$.val.i = $1; } | |
23e3b1e6 | 676 | | '(' term ')' { $$.type = T_INT; $$.val.i = f_eval_int(f_linearize($2)); } |
b8cc390e OZ |
677 | | fipa { $$ = $1; } |
678 | | ENUM { $$.type = pair_a($1); $$.val.i = pair_b($1); } | |
679 | ; | |
680 | ||
60566c5c | 681 | cnum: |
23e3b1e6 | 682 | term { $$ = f_eval_int(f_linearize($1)); } |
b8cc390e OZ |
683 | |
684 | pair_item: | |
60566c5c OZ |
685 | '(' cnum ',' cnum ')' { $$ = f_new_pair_item($2, $2, $4, $4); } |
686 | | '(' cnum ',' cnum DDOT cnum ')' { $$ = f_new_pair_item($2, $2, $4, $6); } | |
687 | | '(' cnum ',' '*' ')' { $$ = f_new_pair_item($2, $2, 0, CC_ALL); } | |
688 | | '(' cnum DDOT cnum ',' cnum ')' { $$ = f_new_pair_set($2, $4, $6, $6); } | |
689 | | '(' cnum DDOT cnum ',' cnum DDOT cnum ')' { $$ = f_new_pair_set($2, $4, $6, $8); } | |
690 | | '(' cnum DDOT cnum ',' '*' ')' { $$ = f_new_pair_item($2, $4, 0, CC_ALL); } | |
691 | | '(' '*' ',' cnum ')' { $$ = f_new_pair_set(0, CC_ALL, $4, $4); } | |
692 | | '(' '*' ',' cnum DDOT cnum ')' { $$ = f_new_pair_set(0, CC_ALL, $4, $6); } | |
693 | | '(' '*' ',' '*' ')' { $$ = f_new_pair_item(0, CC_ALL, 0, CC_ALL); } | |
694 | | '(' cnum ',' cnum ')' DDOT '(' cnum ',' cnum ')' | |
695 | { $$ = f_new_pair_item($2, $8, $4, $10); } | |
38506f71 PM |
696 | ; |
697 | ||
42a0c054 OZ |
698 | ec_kind: |
699 | RT { $$ = EC_RT; } | |
700 | | RO { $$ = EC_RO; } | |
701 | | UNKNOWN NUM { $$ = $2; } | |
702 | | GENERIC { $$ = EC_GENERIC; } | |
703 | ; | |
704 | ||
705 | ec_item: | |
60566c5c OZ |
706 | '(' ec_kind ',' cnum ',' cnum ')' { $$ = f_new_ec_item($2, 0, $4, $6, $6); } |
707 | | '(' ec_kind ',' cnum ',' cnum DDOT cnum ')' { $$ = f_new_ec_item($2, 0, $4, $6, $8); } | |
708 | | '(' ec_kind ',' cnum ',' '*' ')' { $$ = f_new_ec_item($2, 0, $4, 0, EC_ALL); } | |
42a0c054 OZ |
709 | ; |
710 | ||
60566c5c OZ |
711 | lc_item: |
712 | '(' cnum ',' cnum ',' cnum ')' { $$ = f_new_lc_item($2, $2, $4, $4, $6, $6); } | |
713 | | '(' cnum ',' cnum ',' cnum DDOT cnum ')' { $$ = f_new_lc_item($2, $2, $4, $4, $6, $8); } | |
714 | | '(' cnum ',' cnum ',' '*' ')' { $$ = f_new_lc_item($2, $2, $4, $4, 0, LC_ALL); } | |
715 | | '(' cnum ',' cnum DDOT cnum ',' '*' ')' { $$ = f_new_lc_item($2, $2, $4, $6, 0, LC_ALL); } | |
716 | | '(' cnum ',' '*' ',' '*' ')' { $$ = f_new_lc_item($2, $2, 0, LC_ALL, 0, LC_ALL); } | |
717 | | '(' cnum DDOT cnum ',' '*' ',' '*' ')' { $$ = f_new_lc_item($2, $4, 0, LC_ALL, 0, LC_ALL); } | |
718 | | '(' '*' ',' '*' ',' '*' ')' { $$ = f_new_lc_item(0, LC_ALL, 0, LC_ALL, 0, LC_ALL); } | |
719 | | '(' cnum ',' cnum ',' cnum ')' DDOT '(' cnum ',' cnum ',' cnum ')' | |
720 | { $$ = f_new_lc_item($2, $10, $4, $12, $6, $14); } | |
721 | ; | |
42a0c054 | 722 | |
b8cc390e OZ |
723 | set_item: |
724 | pair_item | |
42a0c054 | 725 | | ec_item |
60566c5c | 726 | | lc_item |
b8cc390e OZ |
727 | | set_atom { $$ = f_new_item($1, $1); } |
728 | | set_atom DDOT set_atom { $$ = f_new_item($1, $3); } | |
729 | ; | |
730 | ||
731 | switch_item: | |
732 | pair_item | |
42a0c054 | 733 | | ec_item |
60566c5c | 734 | | lc_item |
b8cc390e OZ |
735 | | switch_atom { $$ = f_new_item($1, $1); } |
736 | | switch_atom DDOT switch_atom { $$ = f_new_item($1, $3); } | |
737 | ; | |
738 | ||
38506f71 | 739 | set_items: |
b8cc390e OZ |
740 | set_item |
741 | | set_items ',' set_item { $$ = f_merge_items($1, $3); } | |
742 | ; | |
743 | ||
744 | switch_items: | |
745 | switch_item | |
746 | | switch_items ',' switch_item { $$ = f_merge_items($1, $3); } | |
38506f71 PM |
747 | ; |
748 | ||
b1a597e0 | 749 | fprefix: |
04632fd7 OZ |
750 | net_ip_ { $$.net = $1; $$.lo = $1.pxlen; $$.hi = $1.pxlen; } |
751 | | net_ip_ '+' { $$.net = $1; $$.lo = $1.pxlen; $$.hi = net_max_prefix_length[$1.type]; } | |
752 | | net_ip_ '-' { $$.net = $1; $$.lo = 0; $$.hi = $1.pxlen; } | |
753 | | net_ip_ '{' NUM ',' NUM '}' { | |
5e173e9f | 754 | $$.net = $1; $$.lo = $3; $$.hi = $5; |
6aaaa635 OZ |
755 | if (($3 > $5) || ($5 > net_max_prefix_length[$1.type])) |
756 | cf_error("Invalid prefix pattern range: {%u, %u}", $3, $5); | |
b1a597e0 OZ |
757 | } |
758 | ; | |
759 | ||
760 | fprefix_set: | |
04632fd7 OZ |
761 | fprefix { $$ = f_new_trie(cfg_mem, sizeof(struct f_trie_node)); trie_add_prefix($$, &($1.net), $1.lo, $1.hi); } |
762 | | fprefix_set ',' fprefix { $$ = $1; trie_add_prefix($$, &($3.net), $3.lo, $3.hi); } | |
b1a597e0 OZ |
763 | ; |
764 | ||
41be4444 | 765 | switch_body: /* EMPTY */ { $$ = NULL; } |
b8cc390e OZ |
766 | | switch_body switch_items ':' cmds { |
767 | /* Fill data fields */ | |
768 | struct f_tree *t; | |
23e3b1e6 | 769 | struct f_line *line = f_linearize($4); |
b8cc390e | 770 | for (t = $2; t; t = t->left) |
4c553c5a | 771 | t->data = line; |
b8cc390e | 772 | $$ = f_merge_items($1, $2); |
41be4444 | 773 | } |
5e173e9f | 774 | | switch_body ELSECOL cmds { |
b8cc390e OZ |
775 | struct f_tree *t = f_new_tree(); |
776 | t->from.type = t->to.type = T_VOID; | |
777 | t->right = t; | |
23e3b1e6 | 778 | t->data = f_linearize($3); |
b8cc390e OZ |
779 | $$ = f_merge_items($1, t); |
780 | } | |
41be4444 | 781 | ; |
d3dd620b | 782 | |
92a72a4c | 783 | bgp_path_expr: |
c0e958e0 | 784 | symbol_value { $$ = $1; } |
92a72a4c OZ |
785 | | '(' term ')' { $$ = $2; } |
786 | ; | |
787 | ||
f9491630 | 788 | bgp_path: |
3e52d112 | 789 | PO bgp_path_tail PC { $$ = $2; } |
f9491630 OZ |
790 | ; |
791 | ||
3e52d112 | 792 | bgp_path_tail: |
4f082dfa MM |
793 | 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; } |
794 | | 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; } | |
795 | | '*' bgp_path_tail { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_PATH_MASK_ITEM, .val.pmi = { .kind = PM_ASTERISK }, }); $$->next = $2; } | |
796 | | '?' bgp_path_tail { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_PATH_MASK_ITEM, .val.pmi = { .kind = PM_QUESTION }, }); $$->next = $2; } | |
797 | | bgp_path_expr bgp_path_tail { $$ = $1; $$->next = $2; } | |
122deb6d | 798 | | { $$ = NULL; } |
f9491630 | 799 | ; |
77de6882 | 800 | |
23b1539b | 801 | constant: |
9b46748d MM |
802 | NUM { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_INT, .val.i = $1, }); } |
803 | | TRUE { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_BOOL, .val.i = 1, }); } | |
804 | | FALSE { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_BOOL, .val.i = 0, }); } | |
805 | | TEXT { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_STRING, .val.s = $1, }); } | |
806 | | fipa { $$ = f_new_inst(FI_CONSTANT, $1); } | |
807 | | VPN_RD { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_RD, .val.ec = $1, }); } | |
808 | | net_ { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_NET, .val.net = $1, }); } | |
ca2ee91a MM |
809 | | '[' set_items ']' { |
810 | DBG( "We've got a set here..." ); | |
9b46748d | 811 | $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_SET, .val.t = build_tree($2), }); |
ca2ee91a MM |
812 | DBG( "ook\n" ); |
813 | } | |
9b46748d MM |
814 | | '[' fprefix_set ']' { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_PREFIX_SET, .val.ti = $2, }); } |
815 | | ENUM { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = $1 >> 16, .val.i = $1 & 0xffff, }); } | |
23b1539b PM |
816 | ; |
817 | ||
42a0c054 | 818 | constructor: |
9b46748d MM |
819 | '(' term ',' term ')' { $$ = f_new_inst(FI_PAIR_CONSTRUCT, $2, $4); } |
820 | | '(' ec_kind ',' term ',' term ')' { $$ = f_new_inst(FI_EC_CONSTRUCT, $4, $6, $2); } | |
821 | | '(' term ',' term ',' term ')' { $$ = f_new_inst(FI_LC_CONSTRUCT, $2, $4, $6); } | |
822 | | bgp_path { $$ = f_new_inst(FI_PATHMASK_CONSTRUCT, $1, 0); } | |
42a0c054 OZ |
823 | ; |
824 | ||
92a72a4c | 825 | |
96d757c1 JMM |
826 | /* This generates the function_call variable list backwards. */ |
827 | var_list: /* EMPTY */ { $$ = NULL; } | |
828 | | term { $$ = $1; } | |
829 | | var_list ',' term { $$ = $3; $$->next = $1; } | |
830 | ||
2d496d20 | 831 | function_call: |
9eef9c64 | 832 | CF_SYM_KNOWN '(' var_list ')' { |
96d757c1 JMM |
833 | if ($1->class != SYM_FUNCTION) |
834 | cf_error("You can't call something which is not a function. Really."); | |
835 | ||
836 | struct f_inst *fc = f_new_inst(FI_CALL, $1); | |
837 | uint args = 0; | |
838 | while ($3) { | |
839 | args++; | |
840 | struct f_inst *tmp = $3->next; | |
841 | $3->next = fc; | |
842 | ||
843 | fc = $3; | |
844 | $3 = tmp; | |
845 | } | |
846 | ||
847 | if (args != $1->function->args) | |
848 | cf_error("Function call '%s' got %u arguments, need %u arguments.", | |
849 | $1->name, args, $1->function->args); | |
850 | ||
851 | $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_VOID }); | |
852 | $$->next = fc; | |
2d496d20 PM |
853 | } |
854 | ; | |
855 | ||
9eef9c64 MM |
856 | symbol_value: CF_SYM_KNOWN |
857 | { | |
858 | switch ($1->class) { | |
859 | case SYM_CONSTANT_RANGE: | |
96d757c1 JMM |
860 | $$ = f_new_inst(FI_CONSTANT_DEFINED, $1); |
861 | break; | |
9eef9c64 | 862 | case SYM_VARIABLE_RANGE: |
96d757c1 | 863 | $$ = f_new_inst(FI_VAR_GET, $1); |
9eef9c64 MM |
864 | break; |
865 | case SYM_ATTRIBUTE: | |
866 | $$ = f_new_inst(FI_EA_GET, *$1->attribute); | |
867 | break; | |
868 | default: | |
869 | cf_error("Can't get value of symbol %s", $1->name); | |
870 | } | |
871 | } | |
c0e958e0 | 872 | ; |
92a72a4c | 873 | |
2bdb5e00 | 874 | static_attr: |
4c553c5a MM |
875 | FROM { $$ = f_new_static_attr(T_IP, SA_FROM, 0); } |
876 | | GW { $$ = f_new_static_attr(T_IP, SA_GW, 0); } | |
877 | | NET { $$ = f_new_static_attr(T_NET, SA_NET, 1); } | |
878 | | PROTO { $$ = f_new_static_attr(T_STRING, SA_PROTO, 1); } | |
879 | | SOURCE { $$ = f_new_static_attr(T_ENUM_RTS, SA_SOURCE, 1); } | |
880 | | SCOPE { $$ = f_new_static_attr(T_ENUM_SCOPE, SA_SCOPE, 0); } | |
881 | | DEST { $$ = f_new_static_attr(T_ENUM_RTD, SA_DEST, 0); } | |
882 | | IFNAME { $$ = f_new_static_attr(T_STRING, SA_IFNAME, 0); } | |
883 | | IFINDEX { $$ = f_new_static_attr(T_INT, SA_IFINDEX, 1); } | |
2bdb5e00 PM |
884 | ; |
885 | ||
84c7e194 | 886 | term: |
5a14df39 | 887 | '(' term ')' { $$ = $2; } |
9b46748d MM |
888 | | term '+' term { $$ = f_new_inst(FI_ADD, $1, $3); } |
889 | | term '-' term { $$ = f_new_inst(FI_SUBTRACT, $1, $3); } | |
890 | | term '*' term { $$ = f_new_inst(FI_MULTIPLY, $1, $3); } | |
891 | | term '/' term { $$ = f_new_inst(FI_DIVIDE, $1, $3); } | |
892 | | term AND term { $$ = f_new_inst(FI_AND, $1, $3); } | |
893 | | term OR term { $$ = f_new_inst(FI_OR, $1, $3); } | |
894 | | term '=' term { $$ = f_new_inst(FI_EQ, $1, $3); } | |
895 | | term NEQ term { $$ = f_new_inst(FI_NEQ, $1, $3); } | |
896 | | term '<' term { $$ = f_new_inst(FI_LT, $1, $3); } | |
897 | | term LEQ term { $$ = f_new_inst(FI_LTE, $1, $3); } | |
898 | | term '>' term { $$ = f_new_inst(FI_LT, $3, $1); } | |
899 | | term GEQ term { $$ = f_new_inst(FI_LTE, $3, $1); } | |
900 | | term '~' term { $$ = f_new_inst(FI_MATCH, $1, $3); } | |
901 | | term NMA term { $$ = f_new_inst(FI_NOT_MATCH, $1, $3); } | |
902 | | '!' term { $$ = f_new_inst(FI_NOT, $2); } | |
903 | | DEFINED '(' term ')' { $$ = f_new_inst(FI_DEFINED, $3); } | |
23b1539b | 904 | |
c0e958e0 | 905 | | symbol_value { $$ = $1; } |
1183b6b2 | 906 | | constant { $$ = $1; } |
42a0c054 | 907 | | constructor { $$ = $1; } |
4515bdba | 908 | |
5a14df39 | 909 | | PREFERENCE { $$ = f_new_inst(FI_PREF_GET); } |
2bdb5e00 | 910 | |
c0e958e0 | 911 | | static_attr { $$ = f_new_inst(FI_RTA_GET, $1); } |
fe613ecd | 912 | |
c0e958e0 | 913 | | dynamic_attr { $$ = f_new_inst(FI_EA_GET, $1); } |
36bbfc70 | 914 | |
9b46748d MM |
915 | | term '.' IS_V4 { $$ = f_new_inst(FI_IS_V4, $1); } |
916 | | term '.' TYPE { $$ = f_new_inst(FI_TYPE, $1); } | |
917 | | term '.' IP { $$ = f_new_inst(FI_IP, $1); } | |
918 | | term '.' RD { $$ = f_new_inst(FI_ROUTE_DISTINGUISHER, $1); } | |
919 | | term '.' LEN { $$ = f_new_inst(FI_LENGTH, $1); } | |
920 | | term '.' MAXLEN { $$ = f_new_inst(FI_ROA_MAXLEN, $1); } | |
921 | | term '.' ASN { $$ = f_new_inst(FI_ROA_ASN, $1); } | |
922 | | term '.' SRC { $$ = f_new_inst(FI_SADR_SRC, $1); } | |
923 | | term '.' MASK '(' term ')' { $$ = f_new_inst(FI_IP_MASK, $1, $5); } | |
924 | | term '.' FIRST { $$ = f_new_inst(FI_AS_PATH_FIRST, $1); } | |
925 | | term '.' LAST { $$ = f_new_inst(FI_AS_PATH_LAST, $1); } | |
926 | | term '.' LAST_NONAGGREGATED { $$ = f_new_inst(FI_AS_PATH_LAST_NAG, $1); } | |
7f77e250 PM |
927 | |
928 | /* Communities */ | |
10a53608 | 929 | /* This causes one shift/reduce conflict |
c0e958e0 MM |
930 | | dynamic_attr '.' ADD '(' term ')' { } |
931 | | dynamic_attr '.' DELETE '(' term ')' { } | |
932 | | dynamic_attr '.' CONTAINS '(' term ')' { } | |
933 | | dynamic_attr '.' RESET{ } | |
10a53608 | 934 | */ |
7f77e250 | 935 | |
9b46748d MM |
936 | | '+' EMPTY '+' { $$ = f_new_inst(FI_CONSTANT, f_const_empty_path); } |
937 | | '-' EMPTY '-' { $$ = f_new_inst(FI_CONSTANT, f_const_empty_clist); } | |
938 | | '-' '-' EMPTY '-' '-' { $$ = f_new_inst(FI_CONSTANT, f_const_empty_eclist); } | |
939 | | '-' '-' '-' EMPTY '-' '-' '-' { $$ = f_new_inst(FI_CONSTANT, f_const_empty_lclist); } | |
940 | | PREPEND '(' term ',' term ')' { $$ = f_new_inst(FI_PATH_PREPEND, $3, $5); } | |
941 | | ADD '(' term ',' term ')' { $$ = f_new_inst(FI_CLIST_ADD, $3, $5); } | |
942 | | DELETE '(' term ',' term ')' { $$ = f_new_inst(FI_CLIST_DEL, $3, $5); } | |
943 | | FILTER '(' term ',' term ')' { $$ = f_new_inst(FI_CLIST_FILTER, $3, $5); } | |
afc54517 | 944 | |
9b46748d MM |
945 | | ROA_CHECK '(' rtable ')' { $$ = f_new_inst(FI_ROA_CHECK_IMPLICIT, $3); } |
946 | | ROA_CHECK '(' rtable ',' term ',' term ')' { $$ = f_new_inst(FI_ROA_CHECK_EXPLICIT, $5, $7, $3); } | |
af582c48 | 947 | |
9b46748d | 948 | | FORMAT '(' term ')' { $$ = f_new_inst(FI_FORMAT, $3); } |
9b0a0ba9 | 949 | |
a2d15746 | 950 | /* | term '.' LEN { $$->code = P('P','l'); } */ |
7f77e250 | 951 | |
4c553c5a | 952 | | function_call |
ba921648 PM |
953 | ; |
954 | ||
955 | break_command: | |
03e3d184 MM |
956 | QUITBIRD { $$ = F_QUITBIRD; } |
957 | | ACCEPT { $$ = F_ACCEPT; } | |
958 | | REJECT { $$ = F_REJECT; } | |
959 | | ERROR { $$ = F_ERROR; } | |
960 | | PRINT { $$ = F_NOP; } | |
961 | | PRINTN { $$ = F_NONL; } | |
ba921648 PM |
962 | ; |
963 | ||
23b1539b | 964 | print_one: |
9b46748d | 965 | term { $$ = f_new_inst(FI_PRINT, $1); } |
23b1539b PM |
966 | ; |
967 | ||
968 | print_list: /* EMPTY */ { $$ = NULL; } | |
995e5894 PM |
969 | | print_one { $$ = $1; } |
970 | | print_one ',' print_list { | |
23b1539b | 971 | if ($1) { |
4f082dfa | 972 | $1->next = $3; |
23b1539b | 973 | $$ = $1; |
995e5894 | 974 | } else $$ = $3; |
23b1539b PM |
975 | } |
976 | ; | |
977 | ||
978 | cmd: | |
49955645 | 979 | IF term THEN block { |
9b46748d | 980 | $$ = f_new_inst(FI_CONDITION, $2, $4, NULL); |
23b1539b | 981 | } |
49955645 | 982 | | IF term THEN block ELSE block { |
9b46748d | 983 | $$ = f_new_inst(FI_CONDITION, $2, $4, $6); |
23b1539b | 984 | } |
9eef9c64 MM |
985 | | CF_SYM_KNOWN '=' term ';' { |
986 | switch ($1->class) { | |
987 | case SYM_VARIABLE_RANGE: | |
a84b8b6e | 988 | $$ = f_new_inst(FI_VAR_SET, $3, $1); |
9eef9c64 MM |
989 | break; |
990 | case SYM_ATTRIBUTE: | |
a84b8b6e | 991 | $$ = f_new_inst(FI_EA_SET, $3, *$1->attribute); |
9eef9c64 MM |
992 | break; |
993 | default: | |
994 | cf_error("Can't assign to symbol %s", $1->name); | |
995 | } | |
b9d70dc8 | 996 | } |
2d496d20 | 997 | | RETURN term ';' { |
d4d75628 | 998 | DBG( "Ook, we'll return the value\n" ); |
a84b8b6e | 999 | $$ = f_new_inst(FI_RETURN, $2); |
2d496d20 | 1000 | } |
c0e958e0 | 1001 | | dynamic_attr '=' term ';' { |
a84b8b6e | 1002 | $$ = f_new_inst(FI_EA_SET, $3, $1); |
f31156ca | 1003 | } |
c0e958e0 MM |
1004 | | static_attr '=' term ';' { |
1005 | if ($1.readonly) | |
0dc4431c | 1006 | cf_error( "This static attribute is read-only."); |
a84b8b6e | 1007 | $$ = f_new_inst(FI_RTA_SET, $3, $1); |
0dc4431c PM |
1008 | } |
1009 | | PREFERENCE '=' term ';' { | |
a84b8b6e | 1010 | $$ = f_new_inst(FI_PREF_SET, $3); |
c8cafc8e | 1011 | } |
c0e958e0 MM |
1012 | | UNSET '(' dynamic_attr ')' ';' { |
1013 | $$ = f_new_inst(FI_EA_UNSET, $3); | |
c7b43f33 | 1014 | } |
9b46748d MM |
1015 | | break_command print_list ';' { $$ = f_new_inst(FI_PRINT_AND_DIE, $2, $1); } |
1016 | | function_call ';' { $$ = f_new_inst(FI_DROP_RESULT, $1); } | |
7db7b7db | 1017 | | CASE term '{' switch_body '}' { |
9b46748d | 1018 | $$ = f_new_inst(FI_SWITCH, $2, build_tree($4)); |
7db7b7db | 1019 | } |
7d6eebae | 1020 | |
c0e958e0 MM |
1021 | | dynamic_attr '.' EMPTY ';' { $$ = f_generate_empty($1); } |
1022 | | dynamic_attr '.' PREPEND '(' term ')' ';' { $$ = f_generate_complex( FI_PATH_PREPEND, $1, $5 ); } | |
1023 | | dynamic_attr '.' ADD '(' term ')' ';' { $$ = f_generate_complex( FI_CLIST_ADD, $1, $5 ); } | |
1024 | | dynamic_attr '.' DELETE '(' term ')' ';' { $$ = f_generate_complex( FI_CLIST_DEL, $1, $5 ); } | |
1025 | | dynamic_attr '.' FILTER '(' term ')' ';' { $$ = f_generate_complex( FI_CLIST_FILTER, $1, $5 ); } | |
3ec0bedc | 1026 | | BT_ASSERT '(' get_cf_position term get_cf_position ')' ';' { $$ = assert_done($4, $3 + 1, $5 - 1); } |
c0e958e0 | 1027 | | BT_CHECK_ASSIGN '(' get_cf_position lvalue get_cf_position ',' term ')' ';' { $$ = assert_assign(&$4, $7, $3 + 1, $5 - 1); } |
9b0a0ba9 OZ |
1028 | ; |
1029 | ||
1030 | get_cf_position: | |
1031 | { | |
1032 | $$ = cf_text; | |
1033 | }; | |
1034 | ||
c0e958e0 | 1035 | lvalue: |
9eef9c64 | 1036 | CF_SYM_KNOWN { cf_assert_symbol($1, SYM_VARIABLE); $$ = (struct f_lval) { .type = F_LVAL_VARIABLE, .sym = $1 }; } |
c0e958e0 MM |
1037 | | PREFERENCE { $$ = (struct f_lval) { .type = F_LVAL_PREFERENCE }; } |
1038 | | static_attr { $$ = (struct f_lval) { .type = F_LVAL_SA, .sa = $1 }; } | |
1039 | | dynamic_attr { $$ = (struct f_lval) { .type = F_LVAL_EA, .da = $1 }; }; | |
9b0a0ba9 | 1040 | |
b9d70dc8 | 1041 | CF_END |