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Commit | Line | Data |
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2601e83e MT |
1 | /* |
2 | libloc - A library to determine the location of someone on the Internet | |
3 | ||
4 | Copyright (C) 2017 IPFire Development Team <info@ipfire.org> | |
5 | ||
6 | This library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | This library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | */ | |
16 | ||
2a30e4de | 17 | #include <arpa/inet.h> |
d3d8ede6 | 18 | #include <ctype.h> |
2601e83e | 19 | #include <errno.h> |
10778041 | 20 | #include <netinet/in.h> |
2601e83e MT |
21 | #include <stddef.h> |
22 | #include <stdint.h> | |
23 | #include <stdio.h> | |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
c182393f | 26 | #include <sys/mman.h> |
2601e83e | 27 | #include <sys/types.h> |
96ea74a5 | 28 | #include <time.h> |
3f35869a | 29 | #include <unistd.h> |
2601e83e | 30 | |
42f3ccd7 MT |
31 | #ifdef HAVE_ENDIAN_H |
32 | # include <endian.h> | |
33 | #endif | |
34 | ||
726f9984 | 35 | #include <openssl/err.h> |
b1720435 | 36 | #include <openssl/evp.h> |
726f9984 | 37 | #include <openssl/pem.h> |
b1720435 | 38 | |
2601e83e | 39 | #include <loc/libloc.h> |
9fc7f001 | 40 | #include <loc/as.h> |
42f3ccd7 | 41 | #include <loc/compat.h> |
ec684c1a | 42 | #include <loc/country.h> |
9fc7f001 | 43 | #include <loc/database.h> |
a5db3e49 | 44 | #include <loc/format.h> |
10778041 | 45 | #include <loc/network.h> |
9fc7f001 MT |
46 | #include <loc/private.h> |
47 | #include <loc/stringpool.h> | |
2601e83e MT |
48 | |
49 | struct loc_database { | |
50 | struct loc_ctx* ctx; | |
51 | int refcount; | |
52 | ||
b1720435 MT |
53 | FILE* f; |
54 | ||
2601e83e | 55 | unsigned int version; |
96ea74a5 | 56 | time_t created_at; |
2601e83e MT |
57 | off_t vendor; |
58 | off_t description; | |
4bf49d00 | 59 | off_t license; |
2601e83e | 60 | |
726f9984 MT |
61 | char* signature; |
62 | size_t signature_length; | |
63 | ||
a5db3e49 | 64 | // ASes in the database |
c182393f | 65 | struct loc_database_as_v0* as_v0; |
a5db3e49 MT |
66 | size_t as_count; |
67 | ||
f66b7b09 MT |
68 | // Network tree |
69 | struct loc_database_network_node_v0* network_nodes_v0; | |
70 | size_t network_nodes_count; | |
71 | ||
a735a563 MT |
72 | // Networks |
73 | struct loc_database_network_v0* networks_v0; | |
74 | size_t networks_count; | |
75 | ||
ec684c1a MT |
76 | // Countries |
77 | struct loc_database_country_v0* countries_v0; | |
78 | size_t countries_count; | |
79 | ||
2601e83e MT |
80 | struct loc_stringpool* pool; |
81 | }; | |
82 | ||
e3f696c1 MT |
83 | #define MAX_STACK_DEPTH 256 |
84 | ||
85 | struct loc_node_stack { | |
86 | off_t offset; | |
87 | int i; // Is this node 0 or 1? | |
88 | int depth; | |
89 | }; | |
90 | ||
7e13db74 MT |
91 | struct loc_database_enumerator { |
92 | struct loc_ctx* ctx; | |
93 | struct loc_database* db; | |
ccc7ab4e | 94 | enum loc_database_enumerator_mode mode; |
7e13db74 | 95 | int refcount; |
d3d8ede6 MT |
96 | |
97 | // Search string | |
98 | char* string; | |
35bb3a32 | 99 | char country_code[3]; |
82910b95 | 100 | uint32_t asn; |
9268db5a | 101 | enum loc_network_flags flags; |
44e5ef71 | 102 | int family; |
d3d8ede6 MT |
103 | |
104 | // Index of the AS we are looking at | |
105 | unsigned int as_index; | |
e3f696c1 MT |
106 | |
107 | // Network state | |
108 | struct in6_addr network_address; | |
109 | struct loc_node_stack network_stack[MAX_STACK_DEPTH]; | |
110 | int network_stack_depth; | |
111 | unsigned int* networks_visited; | |
7e13db74 MT |
112 | }; |
113 | ||
b1720435 | 114 | static int loc_database_read_magic(struct loc_database* db) { |
2601e83e MT |
115 | struct loc_database_magic magic; |
116 | ||
117 | // Read from file | |
b1720435 | 118 | size_t bytes_read = fread(&magic, 1, sizeof(magic), db->f); |
2601e83e MT |
119 | |
120 | // Check if we have been able to read enough data | |
121 | if (bytes_read < sizeof(magic)) { | |
122 | ERROR(db->ctx, "Could not read enough data to validate magic bytes\n"); | |
123 | DEBUG(db->ctx, "Read %zu bytes, but needed %zu\n", bytes_read, sizeof(magic)); | |
124 | return -ENOMSG; | |
125 | } | |
126 | ||
127 | // Compare magic bytes | |
128 | if (memcmp(LOC_DATABASE_MAGIC, magic.magic, strlen(LOC_DATABASE_MAGIC)) == 0) { | |
129 | DEBUG(db->ctx, "Magic value matches\n"); | |
130 | ||
131 | // Parse version | |
0676cd80 | 132 | db->version = be16toh(magic.version); |
2601e83e MT |
133 | DEBUG(db->ctx, "Database version is %u\n", db->version); |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | ERROR(db->ctx, "Database format is not compatible\n"); | |
139 | ||
140 | // Return an error | |
141 | return 1; | |
142 | } | |
143 | ||
a5db3e49 | 144 | static int loc_database_read_as_section_v0(struct loc_database* db, |
b1720435 | 145 | const struct loc_database_header_v0* header) { |
edb4ba7c MT |
146 | off_t as_offset = be32toh(header->as_offset); |
147 | size_t as_length = be32toh(header->as_length); | |
148 | ||
5c57de03 | 149 | DEBUG(db->ctx, "Reading AS section from %jd (%zu bytes)\n", (intmax_t)as_offset, as_length); |
a5db3e49 | 150 | |
c182393f MT |
151 | if (as_length > 0) { |
152 | db->as_v0 = mmap(NULL, as_length, PROT_READ, | |
b1720435 | 153 | MAP_SHARED, fileno(db->f), as_offset); |
a5db3e49 | 154 | |
c182393f MT |
155 | if (db->as_v0 == MAP_FAILED) |
156 | return -errno; | |
a5db3e49 MT |
157 | } |
158 | ||
c182393f MT |
159 | db->as_count = as_length / sizeof(*db->as_v0); |
160 | ||
a5db3e49 MT |
161 | INFO(db->ctx, "Read %zu ASes from the database\n", db->as_count); |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
f66b7b09 | 166 | static int loc_database_read_network_nodes_section_v0(struct loc_database* db, |
b1720435 | 167 | const struct loc_database_header_v0* header) { |
edb4ba7c MT |
168 | off_t network_nodes_offset = be32toh(header->network_tree_offset); |
169 | size_t network_nodes_length = be32toh(header->network_tree_length); | |
170 | ||
f66b7b09 | 171 | DEBUG(db->ctx, "Reading network nodes section from %jd (%zu bytes)\n", |
5c57de03 | 172 | (intmax_t)network_nodes_offset, network_nodes_length); |
f66b7b09 MT |
173 | |
174 | if (network_nodes_length > 0) { | |
175 | db->network_nodes_v0 = mmap(NULL, network_nodes_length, PROT_READ, | |
b1720435 | 176 | MAP_SHARED, fileno(db->f), network_nodes_offset); |
f66b7b09 MT |
177 | |
178 | if (db->network_nodes_v0 == MAP_FAILED) | |
179 | return -errno; | |
180 | } | |
181 | ||
182 | db->network_nodes_count = network_nodes_length / sizeof(*db->network_nodes_v0); | |
183 | ||
184 | INFO(db->ctx, "Read %zu network nodes from the database\n", db->network_nodes_count); | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
a735a563 | 189 | static int loc_database_read_networks_section_v0(struct loc_database* db, |
b1720435 | 190 | const struct loc_database_header_v0* header) { |
a735a563 MT |
191 | off_t networks_offset = be32toh(header->network_data_offset); |
192 | size_t networks_length = be32toh(header->network_data_length); | |
193 | ||
194 | DEBUG(db->ctx, "Reading networks section from %jd (%zu bytes)\n", | |
5c57de03 | 195 | (intmax_t)networks_offset, networks_length); |
a735a563 MT |
196 | |
197 | if (networks_length > 0) { | |
198 | db->networks_v0 = mmap(NULL, networks_length, PROT_READ, | |
b1720435 | 199 | MAP_SHARED, fileno(db->f), networks_offset); |
a735a563 MT |
200 | |
201 | if (db->networks_v0 == MAP_FAILED) | |
202 | return -errno; | |
203 | } | |
204 | ||
205 | db->networks_count = networks_length / sizeof(*db->networks_v0); | |
206 | ||
207 | INFO(db->ctx, "Read %zu networks from the database\n", db->networks_count); | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
ec684c1a | 212 | static int loc_database_read_countries_section_v0(struct loc_database* db, |
b1720435 | 213 | const struct loc_database_header_v0* header) { |
ec684c1a MT |
214 | off_t countries_offset = be32toh(header->countries_offset); |
215 | size_t countries_length = be32toh(header->countries_length); | |
216 | ||
217 | DEBUG(db->ctx, "Reading countries section from %jd (%zu bytes)\n", | |
2e2325a9 | 218 | (intmax_t)countries_offset, countries_length); |
ec684c1a MT |
219 | |
220 | if (countries_length > 0) { | |
221 | db->countries_v0 = mmap(NULL, countries_length, PROT_READ, | |
b1720435 | 222 | MAP_SHARED, fileno(db->f), countries_offset); |
ec684c1a MT |
223 | |
224 | if (db->countries_v0 == MAP_FAILED) | |
225 | return -errno; | |
226 | } | |
227 | ||
228 | db->countries_count = countries_length / sizeof(*db->countries_v0); | |
229 | ||
230 | INFO(db->ctx, "Read %zu countries from the database\n", | |
231 | db->countries_count); | |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
b1720435 | 236 | static int loc_database_read_header_v0(struct loc_database* db) { |
2601e83e MT |
237 | struct loc_database_header_v0 header; |
238 | ||
239 | // Read from file | |
b1720435 | 240 | size_t size = fread(&header, 1, sizeof(header), db->f); |
2601e83e MT |
241 | |
242 | if (size < sizeof(header)) { | |
243 | ERROR(db->ctx, "Could not read enough data for header\n"); | |
244 | return -ENOMSG; | |
245 | } | |
246 | ||
247 | // Copy over data | |
96ea74a5 | 248 | db->created_at = be64toh(header.created_at); |
0676cd80 MT |
249 | db->vendor = be32toh(header.vendor); |
250 | db->description = be32toh(header.description); | |
4bf49d00 | 251 | db->license = be32toh(header.license); |
2601e83e | 252 | |
726f9984 MT |
253 | // Read signature |
254 | db->signature_length = be32toh(header.signature_length); | |
255 | if (db->signature_length) { | |
256 | // Check for a plausible signature length | |
257 | if (db->signature_length > LOC_SIGNATURE_MAX_LENGTH) { | |
258 | ERROR(db->ctx, "Signature too long: %ld\n", db->signature_length); | |
259 | return -EINVAL; | |
260 | } | |
261 | ||
262 | DEBUG(db->ctx, "Reading signature of %ld bytes\n", | |
263 | db->signature_length); | |
264 | ||
265 | db->signature = malloc(db->signature_length); | |
266 | for (unsigned int i = 0; i < db->signature_length; i++) | |
267 | db->signature[i] = header.signature[i]; | |
268 | } | |
269 | ||
2601e83e | 270 | // Open pool |
0676cd80 MT |
271 | off_t pool_offset = be32toh(header.pool_offset); |
272 | size_t pool_length = be32toh(header.pool_length); | |
2601e83e | 273 | |
0e974d4b | 274 | int r = loc_stringpool_open(db->ctx, &db->pool, |
b1720435 | 275 | db->f, pool_length, pool_offset); |
2601e83e MT |
276 | if (r) |
277 | return r; | |
278 | ||
a5db3e49 | 279 | // AS section |
b1720435 | 280 | r = loc_database_read_as_section_v0(db, &header); |
a5db3e49 MT |
281 | if (r) |
282 | return r; | |
283 | ||
f66b7b09 | 284 | // Network Nodes |
b1720435 | 285 | r = loc_database_read_network_nodes_section_v0(db, &header); |
f66b7b09 MT |
286 | if (r) |
287 | return r; | |
288 | ||
a735a563 | 289 | // Networks |
b1720435 | 290 | r = loc_database_read_networks_section_v0(db, &header); |
a735a563 MT |
291 | if (r) |
292 | return r; | |
293 | ||
ec684c1a | 294 | // countries |
b1720435 | 295 | r = loc_database_read_countries_section_v0(db, &header); |
ec684c1a MT |
296 | if (r) |
297 | return r; | |
298 | ||
2601e83e MT |
299 | return 0; |
300 | } | |
301 | ||
b1720435 | 302 | static int loc_database_read_header(struct loc_database* db) { |
2601e83e MT |
303 | switch (db->version) { |
304 | case 0: | |
b1720435 | 305 | return loc_database_read_header_v0(db); |
2601e83e MT |
306 | |
307 | default: | |
308 | ERROR(db->ctx, "Incompatible database version: %u\n", db->version); | |
309 | return 1; | |
310 | } | |
311 | } | |
312 | ||
a7431f1a | 313 | static int loc_database_read(struct loc_database* db, FILE* f) { |
02879100 MT |
314 | clock_t start = clock(); |
315 | ||
b1720435 MT |
316 | int fd = fileno(f); |
317 | ||
318 | // Clone file descriptor | |
319 | fd = dup(fd); | |
320 | if (!fd) { | |
321 | ERROR(db->ctx, "Could not duplicate file descriptor\n"); | |
322 | return -1; | |
323 | } | |
324 | ||
325 | // Reopen the file so that we can keep our own file handle | |
326 | db->f = fdopen(fd, "r"); | |
327 | if (!db->f) { | |
328 | ERROR(db->ctx, "Could not re-open database file\n"); | |
329 | return -1; | |
330 | } | |
331 | ||
332 | // Rewind to the start of the file | |
333 | rewind(db->f); | |
334 | ||
02879100 | 335 | // Read magic bytes |
b1720435 | 336 | int r = loc_database_read_magic(db); |
02879100 MT |
337 | if (r) |
338 | return r; | |
339 | ||
340 | // Read the header | |
b1720435 | 341 | r = loc_database_read_header(db); |
02879100 MT |
342 | if (r) |
343 | return r; | |
344 | ||
345 | clock_t end = clock(); | |
346 | ||
e16c943b MT |
347 | INFO(db->ctx, "Opened database in %.4fms\n", |
348 | (double)(end - start) / CLOCKS_PER_SEC * 1000); | |
02879100 MT |
349 | |
350 | return 0; | |
351 | } | |
352 | ||
c182393f | 353 | LOC_EXPORT int loc_database_new(struct loc_ctx* ctx, struct loc_database** database, FILE* f) { |
a7431f1a MT |
354 | // Fail on invalid file handle |
355 | if (!f) | |
356 | return -EINVAL; | |
357 | ||
c182393f MT |
358 | struct loc_database* db = calloc(1, sizeof(*db)); |
359 | if (!db) | |
360 | return -ENOMEM; | |
361 | ||
362 | // Reference context | |
363 | db->ctx = loc_ref(ctx); | |
364 | db->refcount = 1; | |
365 | ||
366 | DEBUG(db->ctx, "Database object allocated at %p\n", db); | |
367 | ||
a7431f1a | 368 | int r = loc_database_read(db, f); |
02879100 MT |
369 | if (r) { |
370 | loc_database_unref(db); | |
2601e83e | 371 | return r; |
02879100 | 372 | } |
2601e83e | 373 | |
c182393f MT |
374 | *database = db; |
375 | ||
2601e83e | 376 | return 0; |
2601e83e MT |
377 | } |
378 | ||
c182393f MT |
379 | LOC_EXPORT struct loc_database* loc_database_ref(struct loc_database* db) { |
380 | db->refcount++; | |
381 | ||
382 | return db; | |
8f5b676a MT |
383 | } |
384 | ||
c182393f | 385 | static void loc_database_free(struct loc_database* db) { |
f10ebc2d MT |
386 | int r; |
387 | ||
c182393f | 388 | DEBUG(db->ctx, "Releasing database %p\n", db); |
c34e76f1 | 389 | |
c182393f MT |
390 | // Removing all ASes |
391 | if (db->as_v0) { | |
f10ebc2d | 392 | r = munmap(db->as_v0, db->as_count * sizeof(*db->as_v0)); |
c182393f MT |
393 | if (r) |
394 | ERROR(db->ctx, "Could not unmap AS section: %s\n", strerror(errno)); | |
395 | } | |
c34e76f1 | 396 | |
f10ebc2d MT |
397 | // Remove mapped network sections |
398 | if (db->networks_v0) { | |
399 | r = munmap(db->networks_v0, db->networks_count * sizeof(*db->networks_v0)); | |
400 | if (r) | |
401 | ERROR(db->ctx, "Could not unmap networks section: %s\n", strerror(errno)); | |
402 | } | |
403 | ||
404 | // Remove mapped network nodes section | |
405 | if (db->network_nodes_v0) { | |
406 | r = munmap(db->network_nodes_v0, db->network_nodes_count * sizeof(*db->network_nodes_v0)); | |
407 | if (r) | |
408 | ERROR(db->ctx, "Could not unmap network nodes section: %s\n", strerror(errno)); | |
409 | } | |
410 | ||
e16c943b | 411 | loc_stringpool_unref(db->pool); |
c34e76f1 | 412 | |
726f9984 MT |
413 | // Free signature |
414 | if (db->signature) | |
415 | free(db->signature); | |
416 | ||
b1720435 MT |
417 | // Close database file |
418 | if (db->f) | |
419 | fclose(db->f); | |
420 | ||
c182393f MT |
421 | loc_unref(db->ctx); |
422 | free(db); | |
c34e76f1 MT |
423 | } |
424 | ||
c182393f MT |
425 | LOC_EXPORT struct loc_database* loc_database_unref(struct loc_database* db) { |
426 | if (--db->refcount > 0) | |
427 | return NULL; | |
78ace4ed | 428 | |
c182393f MT |
429 | loc_database_free(db); |
430 | return NULL; | |
431 | } | |
78ace4ed | 432 | |
726f9984 MT |
433 | LOC_EXPORT int loc_database_verify(struct loc_database* db, FILE* f) { |
434 | // Cannot do this when no signature is available | |
435 | if (!db->signature) { | |
436 | DEBUG(db->ctx, "No signature available to verify\n"); | |
437 | return 1; | |
438 | } | |
439 | ||
c81205a5 MT |
440 | // Start the stopwatch |
441 | clock_t start = clock(); | |
442 | ||
726f9984 MT |
443 | // Load public key |
444 | EVP_PKEY* pkey = PEM_read_PUBKEY(f, NULL, NULL, NULL); | |
445 | if (!pkey) { | |
446 | char* error = ERR_error_string(ERR_get_error(), NULL); | |
447 | ERROR(db->ctx, "Could not parse public key: %s\n", error); | |
448 | ||
449 | return -1; | |
450 | } | |
451 | ||
b1720435 MT |
452 | int r = 0; |
453 | ||
454 | EVP_MD_CTX* mdctx = EVP_MD_CTX_new(); | |
455 | ||
b1720435 | 456 | // Initialise hash function |
e7f4b2ce MT |
457 | r = EVP_DigestVerifyInit(mdctx, NULL, NULL, NULL, pkey); |
458 | if (r != 1) { | |
459 | ERROR(db->ctx, "Error initializing signature validation: %s\n", | |
460 | ERR_error_string(ERR_get_error(), NULL)); | |
461 | r = 1; | |
462 | ||
463 | goto CLEANUP; | |
464 | } | |
b1720435 MT |
465 | |
466 | // Reset file to start | |
467 | rewind(db->f); | |
468 | ||
469 | // Read magic | |
470 | struct loc_database_magic magic; | |
471 | fread(&magic, 1, sizeof(magic), db->f); | |
472 | ||
a0cff45d MT |
473 | hexdump(db->ctx, &magic, sizeof(magic)); |
474 | ||
b1720435 | 475 | // Feed magic into the hash |
e7f4b2ce MT |
476 | r = EVP_DigestVerifyUpdate(mdctx, &magic, sizeof(magic)); |
477 | if (r != 1) { | |
478 | ERROR(db->ctx, "%s\n", ERR_error_string(ERR_get_error(), NULL)); | |
479 | r = 1; | |
480 | ||
481 | goto CLEANUP; | |
482 | } | |
b1720435 MT |
483 | |
484 | // Read the header | |
485 | struct loc_database_header_v0 header_v0; | |
486 | ||
487 | switch (db->version) { | |
488 | case 0: | |
489 | fread(&header_v0, 1, sizeof(header_v0), db->f); | |
490 | ||
491 | // Clear signature | |
492 | for (unsigned int i = 0; i < sizeof(header_v0.signature); i++) { | |
493 | header_v0.signature[i] = '\0'; | |
494 | } | |
495 | ||
a0cff45d MT |
496 | hexdump(db->ctx, &header_v0, sizeof(header_v0)); |
497 | ||
b1720435 | 498 | // Feed header into the hash |
a0cff45d | 499 | r = EVP_DigestVerifyUpdate(mdctx, &header_v0, sizeof(header_v0)); |
e7f4b2ce MT |
500 | if (r != 1) { |
501 | ERROR(db->ctx, "%s\n", ERR_error_string(ERR_get_error(), NULL)); | |
502 | r = 1; | |
503 | ||
504 | goto CLEANUP; | |
505 | } | |
b1720435 MT |
506 | break; |
507 | ||
508 | default: | |
509 | ERROR(db->ctx, "Cannot compute hash for database with format %d\n", | |
510 | db->version); | |
511 | r = -EINVAL; | |
512 | goto CLEANUP; | |
513 | } | |
514 | ||
726f9984 MT |
515 | // Walk through the file in chunks of 64kB |
516 | char buffer[64 * 1024]; | |
b1720435 MT |
517 | |
518 | while (!feof(db->f)) { | |
519 | size_t bytes_read = fread(buffer, 1, sizeof(buffer), db->f); | |
520 | ||
a0cff45d MT |
521 | hexdump(db->ctx, buffer, bytes_read); |
522 | ||
e7f4b2ce MT |
523 | r = EVP_DigestVerifyUpdate(mdctx, buffer, bytes_read); |
524 | if (r != 1) { | |
525 | ERROR(db->ctx, "%s\n", ERR_error_string(ERR_get_error(), NULL)); | |
526 | r = 1; | |
527 | ||
528 | goto CLEANUP; | |
529 | } | |
b1720435 MT |
530 | } |
531 | ||
726f9984 MT |
532 | // Finish |
533 | r = EVP_DigestVerifyFinal(mdctx, | |
534 | (unsigned char*)db->signature, db->signature_length); | |
535 | ||
536 | if (r == 0) { | |
726f9984 | 537 | DEBUG(db->ctx, "The signature is invalid\n"); |
498aad15 MT |
538 | r = 1; |
539 | } else if (r == 1) { | |
540 | DEBUG(db->ctx, "The signature is valid\n"); | |
541 | r = 0; | |
726f9984 MT |
542 | } else { |
543 | ERROR(db->ctx, "Error verifying the signature: %s\n", | |
544 | ERR_error_string(ERR_get_error(), NULL)); | |
498aad15 | 545 | r = 1; |
b1720435 MT |
546 | } |
547 | ||
257626f5 MT |
548 | // Dump signature |
549 | hexdump(db->ctx, db->signature, db->signature_length); | |
550 | ||
c81205a5 MT |
551 | clock_t end = clock(); |
552 | DEBUG(db->ctx, "Signature checked in %.4fms\n", | |
553 | (double)(end - start) / CLOCKS_PER_SEC * 1000); | |
554 | ||
b1720435 MT |
555 | CLEANUP: |
556 | // Cleanup | |
557 | EVP_MD_CTX_free(mdctx); | |
726f9984 | 558 | EVP_PKEY_free(pkey); |
b1720435 MT |
559 | |
560 | return r; | |
561 | } | |
562 | ||
c182393f MT |
563 | LOC_EXPORT time_t loc_database_created_at(struct loc_database* db) { |
564 | return db->created_at; | |
565 | } | |
78ace4ed | 566 | |
c182393f MT |
567 | LOC_EXPORT const char* loc_database_get_vendor(struct loc_database* db) { |
568 | return loc_stringpool_get(db->pool, db->vendor); | |
569 | } | |
78ace4ed | 570 | |
c182393f MT |
571 | LOC_EXPORT const char* loc_database_get_description(struct loc_database* db) { |
572 | return loc_stringpool_get(db->pool, db->description); | |
573 | } | |
78ace4ed | 574 | |
4bf49d00 MT |
575 | LOC_EXPORT const char* loc_database_get_license(struct loc_database* db) { |
576 | return loc_stringpool_get(db->pool, db->license); | |
577 | } | |
578 | ||
c182393f MT |
579 | LOC_EXPORT size_t loc_database_count_as(struct loc_database* db) { |
580 | return db->as_count; | |
78ace4ed MT |
581 | } |
582 | ||
c182393f MT |
583 | // Returns the AS at position pos |
584 | static int loc_database_fetch_as(struct loc_database* db, struct loc_as** as, off_t pos) { | |
585 | if ((size_t)pos >= db->as_count) | |
586 | return -EINVAL; | |
2601e83e | 587 | |
5c57de03 | 588 | DEBUG(db->ctx, "Fetching AS at position %jd\n", (intmax_t)pos); |
2601e83e MT |
589 | |
590 | int r; | |
c182393f MT |
591 | switch (db->version) { |
592 | case 0: | |
593 | r = loc_as_new_from_database_v0(db->ctx, db->pool, as, db->as_v0 + pos); | |
594 | break; | |
2601e83e | 595 | |
c182393f MT |
596 | default: |
597 | return -1; | |
598 | } | |
2601e83e | 599 | |
c182393f MT |
600 | if (r == 0) { |
601 | DEBUG(db->ctx, "Got AS%u\n", loc_as_get_number(*as)); | |
2601e83e | 602 | } |
2601e83e | 603 | |
c182393f MT |
604 | return r; |
605 | } | |
c34e76f1 | 606 | |
c182393f MT |
607 | // Performs a binary search to find the AS in the list |
608 | LOC_EXPORT int loc_database_get_as(struct loc_database* db, struct loc_as** as, uint32_t number) { | |
609 | off_t lo = 0; | |
610 | off_t hi = db->as_count - 1; | |
c34e76f1 | 611 | |
8f3e2a06 MT |
612 | // Save start time |
613 | clock_t start = clock(); | |
614 | ||
c182393f MT |
615 | while (lo <= hi) { |
616 | off_t i = (lo + hi) / 2; | |
8f5b676a | 617 | |
c182393f MT |
618 | // Fetch AS in the middle between lo and hi |
619 | int r = loc_database_fetch_as(db, as, i); | |
620 | if (r) | |
621 | return r; | |
a5db3e49 | 622 | |
c182393f MT |
623 | // Check if this is a match |
624 | uint32_t as_number = loc_as_get_number(*as); | |
8f3e2a06 MT |
625 | if (as_number == number) { |
626 | clock_t end = clock(); | |
627 | ||
628 | // Log how fast this has been | |
e16c943b MT |
629 | DEBUG(db->ctx, "Found AS%u in %.4fms\n", as_number, |
630 | (double)(end - start) / CLOCKS_PER_SEC * 1000); | |
8f3e2a06 | 631 | |
c182393f | 632 | return 0; |
8f3e2a06 | 633 | } |
c182393f MT |
634 | |
635 | // If it wasn't, we release the AS and | |
636 | // adjust our search pointers | |
637 | loc_as_unref(*as); | |
638 | ||
639 | if (as_number < number) { | |
640 | lo = i + 1; | |
641 | } else | |
642 | hi = i - 1; | |
643 | } | |
2601e83e | 644 | |
c182393f MT |
645 | // Nothing found |
646 | *as = NULL; | |
2601e83e | 647 | |
8f3e2a06 | 648 | return 1; |
2601e83e | 649 | } |
10778041 MT |
650 | |
651 | // Returns the network at position pos | |
39a55353 MT |
652 | static int loc_database_fetch_network(struct loc_database* db, struct loc_network** network, |
653 | struct in6_addr* address, unsigned int prefix, off_t pos) { | |
9b9e5faf MT |
654 | if ((size_t)pos >= db->networks_count) { |
655 | DEBUG(db->ctx, "Network ID out of range: %jd/%jd\n", | |
656 | (intmax_t)pos, (intmax_t)db->networks_count); | |
10778041 | 657 | return -EINVAL; |
9b9e5faf MT |
658 | } |
659 | ||
10778041 | 660 | |
5c57de03 | 661 | DEBUG(db->ctx, "Fetching network at position %jd\n", (intmax_t)pos); |
10778041 MT |
662 | |
663 | int r; | |
664 | switch (db->version) { | |
665 | case 0: | |
39a55353 MT |
666 | r = loc_network_new_from_database_v0(db->ctx, network, |
667 | address, prefix, db->networks_v0 + pos); | |
10778041 MT |
668 | break; |
669 | ||
670 | default: | |
671 | return -1; | |
672 | } | |
673 | ||
674 | if (r == 0) { | |
675 | char* string = loc_network_str(*network); | |
676 | DEBUG(db->ctx, "Got network %s\n", string); | |
677 | free(string); | |
678 | } | |
679 | ||
680 | return r; | |
681 | } | |
2a30e4de | 682 | |
025ef489 | 683 | static int __loc_database_node_is_leaf(const struct loc_database_network_node_v0* node) { |
39a55353 | 684 | return (node->network != htobe32(0xffffffff)); |
025ef489 MT |
685 | } |
686 | ||
687 | static int __loc_database_lookup_handle_leaf(struct loc_database* db, const struct in6_addr* address, | |
39a55353 | 688 | struct loc_network** network, struct in6_addr* network_address, unsigned int prefix, |
2a30e4de | 689 | const struct loc_database_network_node_v0* node) { |
39a55353 MT |
690 | off_t network_index = be32toh(node->network); |
691 | ||
5c57de03 | 692 | DEBUG(db->ctx, "Handling leaf node at %jd (%jd)\n", (intmax_t)(node - db->network_nodes_v0), (intmax_t)network_index); |
2a30e4de MT |
693 | |
694 | // Fetch the network | |
695 | int r = loc_database_fetch_network(db, network, | |
39a55353 | 696 | network_address, prefix, network_index); |
e85e2b0b | 697 | if (r) { |
5c57de03 | 698 | ERROR(db->ctx, "Could not fetch network %jd from database\n", (intmax_t)network_index); |
2a30e4de | 699 | return r; |
e85e2b0b | 700 | } |
39a55353 | 701 | |
2a30e4de MT |
702 | // Check if the given IP address is inside the network |
703 | r = loc_network_match_address(*network, address); | |
704 | if (r) { | |
705 | DEBUG(db->ctx, "Searched address is not part of the network\n"); | |
706 | ||
707 | loc_network_unref(*network); | |
708 | *network = NULL; | |
709 | return 1; | |
710 | } | |
711 | ||
712 | // A network was found and the IP address matches | |
713 | return 0; | |
714 | } | |
715 | ||
2a30e4de MT |
716 | // Searches for an exact match along the path |
717 | static int __loc_database_lookup(struct loc_database* db, const struct in6_addr* address, | |
718 | struct loc_network** network, struct in6_addr* network_address, | |
f66f15e1 | 719 | const struct loc_database_network_node_v0* node, unsigned int level) { |
025ef489 | 720 | int r; |
2a30e4de MT |
721 | off_t node_index; |
722 | ||
723 | // Follow the path | |
724 | int bit = in6_addr_get_bit(address, level); | |
725 | in6_addr_set_bit(network_address, level, bit); | |
726 | ||
727 | if (bit == 0) | |
728 | node_index = be32toh(node->zero); | |
729 | else | |
730 | node_index = be32toh(node->one); | |
731 | ||
9086d2b1 MT |
732 | // If the node index is zero, the tree ends here |
733 | // and we cannot descend any further | |
734 | if (node_index > 0) { | |
735 | // Check boundaries | |
736 | if ((size_t)node_index >= db->network_nodes_count) | |
737 | return -EINVAL; | |
2a30e4de | 738 | |
9086d2b1 MT |
739 | // Move on to the next node |
740 | r = __loc_database_lookup(db, address, network, network_address, | |
741 | db->network_nodes_v0 + node_index, level + 1); | |
2a30e4de | 742 | |
9086d2b1 MT |
743 | // End here if a result was found |
744 | if (r == 0) | |
745 | return r; | |
2a30e4de | 746 | |
9086d2b1 MT |
747 | // Raise any errors |
748 | else if (r < 0) | |
749 | return r; | |
ec1d9681 MT |
750 | |
751 | DEBUG(db->ctx, "No match found below level %u\n", level); | |
752 | } else { | |
753 | DEBUG(db->ctx, "Tree ended at level %u\n", level); | |
9086d2b1 | 754 | } |
2a30e4de | 755 | |
9086d2b1 MT |
756 | // If this node has a leaf, we will check if it matches |
757 | if (__loc_database_node_is_leaf(node)) { | |
758 | r = __loc_database_lookup_handle_leaf(db, address, network, network_address, level, node); | |
759 | if (r <= 0) | |
760 | return r; | |
761 | } | |
2a30e4de | 762 | |
ec1d9681 | 763 | return 1; |
2a30e4de MT |
764 | } |
765 | ||
766 | LOC_EXPORT int loc_database_lookup(struct loc_database* db, | |
767 | struct in6_addr* address, struct loc_network** network) { | |
768 | struct in6_addr network_address; | |
769 | memset(&network_address, 0, sizeof(network_address)); | |
770 | ||
771 | *network = NULL; | |
772 | ||
773 | // Save start time | |
774 | clock_t start = clock(); | |
775 | ||
776 | int r = __loc_database_lookup(db, address, network, &network_address, | |
777 | db->network_nodes_v0, 0); | |
778 | ||
779 | clock_t end = clock(); | |
780 | ||
781 | // Log how fast this has been | |
e16c943b MT |
782 | DEBUG(db->ctx, "Executed network search in %.4fms\n", |
783 | (double)(end - start) / CLOCKS_PER_SEC * 1000); | |
2a30e4de MT |
784 | |
785 | return r; | |
786 | } | |
787 | ||
788 | LOC_EXPORT int loc_database_lookup_from_string(struct loc_database* db, | |
789 | const char* string, struct loc_network** network) { | |
790 | struct in6_addr address; | |
791 | ||
792 | int r = loc_parse_address(db->ctx, string, &address); | |
793 | if (r) | |
794 | return r; | |
795 | ||
796 | return loc_database_lookup(db, &address, network); | |
797 | } | |
7e13db74 | 798 | |
ec684c1a MT |
799 | // Returns the country at position pos |
800 | static int loc_database_fetch_country(struct loc_database* db, | |
801 | struct loc_country** country, off_t pos) { | |
802 | if ((size_t)pos >= db->countries_count) | |
803 | return -EINVAL; | |
804 | ||
2e2325a9 | 805 | DEBUG(db->ctx, "Fetching country at position %jd\n", (intmax_t)pos); |
ec684c1a MT |
806 | |
807 | int r; | |
808 | switch (db->version) { | |
809 | case 0: | |
810 | r = loc_country_new_from_database_v0(db->ctx, db->pool, country, db->countries_v0 + pos); | |
811 | break; | |
812 | ||
813 | default: | |
814 | return -1; | |
815 | } | |
816 | ||
817 | if (r == 0) { | |
818 | DEBUG(db->ctx, "Got country %s\n", loc_country_get_code(*country)); | |
819 | } | |
820 | ||
821 | return r; | |
822 | } | |
823 | ||
824 | // Performs a binary search to find the country in the list | |
825 | LOC_EXPORT int loc_database_get_country(struct loc_database* db, | |
826 | struct loc_country** country, const char* code) { | |
827 | off_t lo = 0; | |
828 | off_t hi = db->countries_count - 1; | |
829 | ||
830 | // Save start time | |
831 | clock_t start = clock(); | |
832 | ||
833 | while (lo <= hi) { | |
834 | off_t i = (lo + hi) / 2; | |
835 | ||
836 | // Fetch country in the middle between lo and hi | |
837 | int r = loc_database_fetch_country(db, country, i); | |
838 | if (r) | |
839 | return r; | |
840 | ||
841 | // Check if this is a match | |
842 | const char* cc = loc_country_get_code(*country); | |
843 | int result = strcmp(code, cc); | |
844 | ||
845 | if (result == 0) { | |
846 | clock_t end = clock(); | |
847 | ||
848 | // Log how fast this has been | |
849 | DEBUG(db->ctx, "Found country %s in %.4fms\n", cc, | |
850 | (double)(end - start) / CLOCKS_PER_SEC * 1000); | |
851 | ||
852 | return 0; | |
853 | } | |
854 | ||
855 | // If it wasn't, we release the country and | |
856 | // adjust our search pointers | |
857 | loc_country_unref(*country); | |
858 | ||
191830da | 859 | if (result > 0) { |
ec684c1a MT |
860 | lo = i + 1; |
861 | } else | |
862 | hi = i - 1; | |
863 | } | |
864 | ||
865 | // Nothing found | |
866 | *country = NULL; | |
867 | ||
868 | return 1; | |
869 | } | |
870 | ||
7e13db74 MT |
871 | // Enumerator |
872 | ||
ccc7ab4e MT |
873 | LOC_EXPORT int loc_database_enumerator_new(struct loc_database_enumerator** enumerator, |
874 | struct loc_database* db, enum loc_database_enumerator_mode mode) { | |
7e13db74 MT |
875 | struct loc_database_enumerator* e = calloc(1, sizeof(*e)); |
876 | if (!e) | |
877 | return -ENOMEM; | |
878 | ||
879 | // Reference context | |
880 | e->ctx = loc_ref(db->ctx); | |
881 | e->db = loc_database_ref(db); | |
ccc7ab4e | 882 | e->mode = mode; |
7e13db74 MT |
883 | e->refcount = 1; |
884 | ||
e3f696c1 MT |
885 | // Initialise graph search |
886 | //e->network_stack[++e->network_stack_depth] = 0; | |
887 | e->network_stack_depth = 1; | |
888 | e->networks_visited = calloc(db->network_nodes_count, sizeof(*e->networks_visited)); | |
889 | ||
7e13db74 MT |
890 | DEBUG(e->ctx, "Database enumerator object allocated at %p\n", e); |
891 | ||
892 | *enumerator = e; | |
893 | return 0; | |
894 | } | |
895 | ||
896 | LOC_EXPORT struct loc_database_enumerator* loc_database_enumerator_ref(struct loc_database_enumerator* enumerator) { | |
897 | enumerator->refcount++; | |
898 | ||
899 | return enumerator; | |
900 | } | |
901 | ||
902 | static void loc_database_enumerator_free(struct loc_database_enumerator* enumerator) { | |
903 | DEBUG(enumerator->ctx, "Releasing database enumerator %p\n", enumerator); | |
904 | ||
905 | // Release all references | |
906 | loc_database_unref(enumerator->db); | |
907 | loc_unref(enumerator->ctx); | |
908 | ||
d3d8ede6 MT |
909 | if (enumerator->string) |
910 | free(enumerator->string); | |
911 | ||
91d89020 MT |
912 | // Free network search |
913 | free(enumerator->networks_visited); | |
914 | ||
7e13db74 MT |
915 | free(enumerator); |
916 | } | |
917 | ||
918 | LOC_EXPORT struct loc_database_enumerator* loc_database_enumerator_unref(struct loc_database_enumerator* enumerator) { | |
919 | if (!enumerator) | |
920 | return NULL; | |
921 | ||
922 | if (--enumerator->refcount > 0) | |
923 | return enumerator; | |
924 | ||
925 | loc_database_enumerator_free(enumerator); | |
926 | return NULL; | |
927 | } | |
d3d8ede6 MT |
928 | |
929 | LOC_EXPORT int loc_database_enumerator_set_string(struct loc_database_enumerator* enumerator, const char* string) { | |
930 | enumerator->string = strdup(string); | |
931 | ||
932 | // Make the string lowercase | |
933 | for (char *p = enumerator->string; *p; p++) | |
934 | *p = tolower(*p); | |
935 | ||
936 | return 0; | |
937 | } | |
938 | ||
35bb3a32 MT |
939 | LOC_EXPORT int loc_database_enumerator_set_country_code(struct loc_database_enumerator* enumerator, const char* country_code) { |
940 | // Set empty country code | |
941 | if (!country_code || !*country_code) { | |
942 | *enumerator->country_code = '\0'; | |
943 | return 0; | |
944 | } | |
945 | ||
4ef1761f MT |
946 | // Treat A1, A2, A3 as special country codes, |
947 | // but perform search for flags instead | |
948 | if (strcmp(country_code, "A1") == 0) { | |
949 | return loc_database_enumerator_set_flag(enumerator, | |
950 | LOC_NETWORK_FLAG_ANONYMOUS_PROXY); | |
951 | } else if (strcmp(country_code, "A2") == 0) { | |
952 | return loc_database_enumerator_set_flag(enumerator, | |
953 | LOC_NETWORK_FLAG_SATELLITE_PROVIDER); | |
954 | } else if (strcmp(country_code, "A3") == 0) { | |
955 | return loc_database_enumerator_set_flag(enumerator, | |
956 | LOC_NETWORK_FLAG_ANYCAST); | |
957 | } | |
958 | ||
57146963 MT |
959 | // Country codes must be two characters |
960 | if (!loc_country_code_is_valid(country_code)) | |
961 | return -EINVAL; | |
962 | ||
35bb3a32 MT |
963 | for (unsigned int i = 0; i < 3; i++) { |
964 | enumerator->country_code[i] = country_code[i]; | |
965 | } | |
966 | ||
967 | return 0; | |
968 | } | |
969 | ||
82910b95 MT |
970 | LOC_EXPORT int loc_database_enumerator_set_asn( |
971 | struct loc_database_enumerator* enumerator, unsigned int asn) { | |
972 | enumerator->asn = asn; | |
973 | ||
974 | return 0; | |
975 | } | |
976 | ||
9268db5a MT |
977 | LOC_EXPORT int loc_database_enumerator_set_flag( |
978 | struct loc_database_enumerator* enumerator, enum loc_network_flags flag) { | |
979 | enumerator->flags |= flag; | |
980 | ||
981 | return 0; | |
982 | } | |
983 | ||
44e5ef71 MT |
984 | LOC_EXPORT int loc_database_enumerator_set_family( |
985 | struct loc_database_enumerator* enumerator, int family) { | |
986 | enumerator->family = family; | |
987 | ||
988 | return 0; | |
989 | } | |
990 | ||
15f79e2d MT |
991 | LOC_EXPORT int loc_database_enumerator_next_as( |
992 | struct loc_database_enumerator* enumerator, struct loc_as** as) { | |
993 | *as = NULL; | |
994 | ||
ccc7ab4e MT |
995 | // Do not do anything if not in AS mode |
996 | if (enumerator->mode != LOC_DB_ENUMERATE_ASES) | |
15f79e2d | 997 | return 0; |
ccc7ab4e | 998 | |
d3d8ede6 | 999 | struct loc_database* db = enumerator->db; |
d3d8ede6 MT |
1000 | |
1001 | while (enumerator->as_index < db->as_count) { | |
1002 | // Fetch the next AS | |
15f79e2d | 1003 | int r = loc_database_fetch_as(db, as, enumerator->as_index++); |
d3d8ede6 | 1004 | if (r) |
15f79e2d | 1005 | return r; |
d3d8ede6 | 1006 | |
15f79e2d | 1007 | r = loc_as_match_string(*as, enumerator->string); |
273948cf | 1008 | if (r == 1) { |
d3d8ede6 | 1009 | DEBUG(enumerator->ctx, "AS%d (%s) matches %s\n", |
15f79e2d | 1010 | loc_as_get_number(*as), loc_as_get_name(*as), enumerator->string); |
d3d8ede6 | 1011 | |
15f79e2d | 1012 | return 0; |
d3d8ede6 MT |
1013 | } |
1014 | ||
1015 | // No match | |
15f79e2d | 1016 | loc_as_unref(*as); |
74f218f0 | 1017 | *as = NULL; |
d3d8ede6 MT |
1018 | } |
1019 | ||
1020 | // Reset the index | |
1021 | enumerator->as_index = 0; | |
1022 | ||
1023 | // We have searched through all of them | |
15f79e2d | 1024 | return 0; |
d3d8ede6 | 1025 | } |
e3f696c1 MT |
1026 | |
1027 | static int loc_database_enumerator_stack_push_node( | |
1028 | struct loc_database_enumerator* e, off_t offset, int i, int depth) { | |
1029 | // Do not add empty nodes | |
1030 | if (!offset) | |
1031 | return 0; | |
1032 | ||
1033 | // Check if there is any space left on the stack | |
1034 | if (e->network_stack_depth >= MAX_STACK_DEPTH) { | |
1035 | ERROR(e->ctx, "Maximum stack size reached: %d\n", e->network_stack_depth); | |
1036 | return -1; | |
1037 | } | |
1038 | ||
1039 | // Increase stack size | |
1040 | int s = ++e->network_stack_depth; | |
1041 | ||
2e2325a9 | 1042 | DEBUG(e->ctx, "Added node %jd to stack (%d)\n", (intmax_t)offset, depth); |
e3f696c1 MT |
1043 | |
1044 | e->network_stack[s].offset = offset; | |
1045 | e->network_stack[s].i = i; | |
1046 | e->network_stack[s].depth = depth; | |
1047 | ||
1048 | return 0; | |
1049 | } | |
1050 | ||
15f79e2d MT |
1051 | LOC_EXPORT int loc_database_enumerator_next_network( |
1052 | struct loc_database_enumerator* enumerator, struct loc_network** network) { | |
e3f696c1 MT |
1053 | // Reset network |
1054 | *network = NULL; | |
15f79e2d MT |
1055 | |
1056 | // Do not do anything if not in network mode | |
1057 | if (enumerator->mode != LOC_DB_ENUMERATE_NETWORKS) | |
1058 | return 0; | |
1059 | ||
e3f696c1 MT |
1060 | int r; |
1061 | ||
15f79e2d MT |
1062 | DEBUG(enumerator->ctx, "Called with a stack of %u nodes\n", |
1063 | enumerator->network_stack_depth); | |
e3f696c1 MT |
1064 | |
1065 | // Perform DFS | |
15f79e2d MT |
1066 | while (enumerator->network_stack_depth > 0) { |
1067 | DEBUG(enumerator->ctx, "Stack depth: %u\n", enumerator->network_stack_depth); | |
e3f696c1 MT |
1068 | |
1069 | // Get object from top of the stack | |
15f79e2d | 1070 | struct loc_node_stack* node = &enumerator->network_stack[enumerator->network_stack_depth]; |
e3f696c1 MT |
1071 | |
1072 | // Remove the node from the stack if we have already visited it | |
15f79e2d MT |
1073 | if (enumerator->networks_visited[node->offset]) { |
1074 | enumerator->network_stack_depth--; | |
e3f696c1 MT |
1075 | continue; |
1076 | } | |
1077 | ||
74fb733a | 1078 | // Mark the bits on the path correctly |
15f79e2d | 1079 | in6_addr_set_bit(&enumerator->network_address, |
e3f696c1 MT |
1080 | (node->depth > 0) ? node->depth - 1 : 0, node->i); |
1081 | ||
2e2325a9 | 1082 | DEBUG(enumerator->ctx, "Looking at node %jd\n", (intmax_t)node->offset); |
15f79e2d | 1083 | enumerator->networks_visited[node->offset]++; |
e3f696c1 MT |
1084 | |
1085 | // Pop node from top of the stack | |
1086 | struct loc_database_network_node_v0* n = | |
15f79e2d | 1087 | enumerator->db->network_nodes_v0 + node->offset; |
e3f696c1 MT |
1088 | |
1089 | // Add edges to stack | |
15f79e2d | 1090 | r = loc_database_enumerator_stack_push_node(enumerator, |
e3f696c1 MT |
1091 | be32toh(n->one), 1, node->depth + 1); |
1092 | ||
1093 | if (r) | |
1094 | return r; | |
1095 | ||
15f79e2d | 1096 | r = loc_database_enumerator_stack_push_node(enumerator, |
e3f696c1 MT |
1097 | be32toh(n->zero), 0, node->depth + 1); |
1098 | ||
1099 | if (r) | |
1100 | return r; | |
1101 | ||
1102 | // Check if this node is a leaf and has a network object | |
1103 | if (__loc_database_node_is_leaf(n)) { | |
1104 | off_t network_index = be32toh(n->network); | |
1105 | ||
2e2325a9 | 1106 | DEBUG(enumerator->ctx, "Node has a network at %jd\n", (intmax_t)network_index); |
e3f696c1 MT |
1107 | |
1108 | // Fetch the network object | |
15f79e2d MT |
1109 | r = loc_database_fetch_network(enumerator->db, network, |
1110 | &enumerator->network_address, node->depth, network_index); | |
e3f696c1 MT |
1111 | |
1112 | // Break on any errors | |
1113 | if (r) | |
1114 | return r; | |
1115 | ||
1116 | // Check if we are interested in this network | |
1117 | ||
44e5ef71 MT |
1118 | // Skip if the family does not match |
1119 | if (enumerator->family && loc_network_address_family(*network) != enumerator->family) { | |
1120 | loc_network_unref(*network); | |
1121 | *network = NULL; | |
1122 | ||
1123 | continue; | |
1124 | } | |
1125 | ||
e3f696c1 | 1126 | // Skip if the country code does not match |
435b621e | 1127 | if (*enumerator->country_code && |
15f79e2d | 1128 | !loc_network_match_country_code(*network, enumerator->country_code)) { |
e3f696c1 | 1129 | loc_network_unref(*network); |
15f79e2d MT |
1130 | *network = NULL; |
1131 | ||
e3f696c1 MT |
1132 | continue; |
1133 | } | |
1134 | ||
82910b95 | 1135 | // Skip if the ASN does not match |
15f79e2d MT |
1136 | if (enumerator->asn && |
1137 | !loc_network_match_asn(*network, enumerator->asn)) { | |
82910b95 | 1138 | loc_network_unref(*network); |
15f79e2d MT |
1139 | *network = NULL; |
1140 | ||
82910b95 MT |
1141 | continue; |
1142 | } | |
1143 | ||
9268db5a MT |
1144 | // Skip if flags do not match |
1145 | if (enumerator->flags && | |
1146 | !loc_network_match_flag(*network, enumerator->flags)) { | |
1147 | loc_network_unref(*network); | |
1148 | *network = NULL; | |
1149 | } | |
1150 | ||
e3f696c1 MT |
1151 | return 0; |
1152 | } | |
1153 | } | |
1154 | ||
1155 | // Reached the end of the search | |
fe483cdc MT |
1156 | |
1157 | // Mark all nodes as non-visited | |
15f79e2d MT |
1158 | for (unsigned int i = 0; i < enumerator->db->network_nodes_count; i++) |
1159 | enumerator->networks_visited[i] = 0; | |
e3f696c1 MT |
1160 | |
1161 | return 0; | |
1162 | } |