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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 | |
c12a1385 | 39 | #include <libloc/libloc.h> |
0b1fef38 | 40 | #include <libloc/address.h> |
c12a1385 MT |
41 | #include <libloc/as.h> |
42 | #include <libloc/as-list.h> | |
43 | #include <libloc/compat.h> | |
44 | #include <libloc/country.h> | |
45 | #include <libloc/country-list.h> | |
46 | #include <libloc/database.h> | |
47 | #include <libloc/format.h> | |
48 | #include <libloc/network.h> | |
49 | #include <libloc/network-list.h> | |
50 | #include <libloc/private.h> | |
51 | #include <libloc/stringpool.h> | |
2601e83e | 52 | |
18638ad2 | 53 | struct loc_database_objects { |
866ae435 | 54 | char* data; |
18638ad2 MT |
55 | off_t offset; |
56 | size_t length; | |
57 | size_t count; | |
58 | }; | |
59 | ||
866ae435 MT |
60 | struct loc_database_signature { |
61 | const char* data; | |
62 | size_t length; | |
63 | }; | |
64 | ||
2601e83e MT |
65 | struct loc_database { |
66 | struct loc_ctx* ctx; | |
67 | int refcount; | |
68 | ||
b1720435 MT |
69 | FILE* f; |
70 | ||
22c7b98b | 71 | enum loc_database_version version; |
96ea74a5 | 72 | time_t created_at; |
2601e83e MT |
73 | off_t vendor; |
74 | off_t description; | |
4bf49d00 | 75 | off_t license; |
2601e83e | 76 | |
5ce881d4 | 77 | // Signatures |
866ae435 MT |
78 | struct loc_database_signature signature1; |
79 | struct loc_database_signature signature2; | |
726f9984 | 80 | |
3496a16c MT |
81 | // Data mapped into memory |
82 | char* data; | |
83 | off_t length; | |
84 | ||
18638ad2 MT |
85 | struct loc_stringpool* pool; |
86 | ||
a5db3e49 | 87 | // ASes in the database |
18638ad2 | 88 | struct loc_database_objects as_objects; |
a5db3e49 | 89 | |
f66b7b09 | 90 | // Network tree |
18638ad2 | 91 | struct loc_database_objects network_node_objects; |
f66b7b09 | 92 | |
a735a563 | 93 | // Networks |
18638ad2 | 94 | struct loc_database_objects network_objects; |
a735a563 | 95 | |
ec684c1a | 96 | // Countries |
18638ad2 | 97 | struct loc_database_objects country_objects; |
2601e83e MT |
98 | }; |
99 | ||
e3f696c1 MT |
100 | #define MAX_STACK_DEPTH 256 |
101 | ||
102 | struct loc_node_stack { | |
103 | off_t offset; | |
104 | int i; // Is this node 0 or 1? | |
105 | int depth; | |
106 | }; | |
107 | ||
7e13db74 MT |
108 | struct loc_database_enumerator { |
109 | struct loc_ctx* ctx; | |
110 | struct loc_database* db; | |
ccc7ab4e | 111 | enum loc_database_enumerator_mode mode; |
7e13db74 | 112 | int refcount; |
d3d8ede6 MT |
113 | |
114 | // Search string | |
115 | char* string; | |
e646a8f3 | 116 | struct loc_country_list* countries; |
84a2f0c2 | 117 | struct loc_as_list* asns; |
9268db5a | 118 | enum loc_network_flags flags; |
44e5ef71 | 119 | int family; |
d3d8ede6 | 120 | |
681ff05c MT |
121 | // Flatten output? |
122 | int flatten; | |
123 | ||
d3d8ede6 MT |
124 | // Index of the AS we are looking at |
125 | unsigned int as_index; | |
e3f696c1 | 126 | |
fa9a3663 MT |
127 | // Index of the country we are looking at |
128 | unsigned int country_index; | |
129 | ||
e3f696c1 MT |
130 | // Network state |
131 | struct in6_addr network_address; | |
132 | struct loc_node_stack network_stack[MAX_STACK_DEPTH]; | |
133 | int network_stack_depth; | |
134 | unsigned int* networks_visited; | |
d87fd7a3 | 135 | |
8c37d8a7 | 136 | // For subnet search and bogons |
d87fd7a3 | 137 | struct loc_network_list* stack; |
065b3496 | 138 | struct loc_network_list* subnets; |
9306c68d MT |
139 | |
140 | // For bogons | |
141 | struct in6_addr gap6_start; | |
142 | struct in6_addr gap4_start; | |
7e13db74 MT |
143 | }; |
144 | ||
18638ad2 | 145 | /* |
975f280f | 146 | Checks if it is safe to read the buffer of size length starting at p. |
18638ad2 | 147 | */ |
975f280f MT |
148 | #define loc_database_check_boundaries(db, p) \ |
149 | __loc_database_check_boundaries(db, (const char*)p, sizeof(*p)) | |
18638ad2 | 150 | |
0e0be76c | 151 | static inline int __loc_database_check_boundaries(struct loc_database* db, |
975f280f MT |
152 | const char* p, const size_t length) { |
153 | size_t offset = p - db->data; | |
18638ad2 | 154 | |
975f280f MT |
155 | // Return if everything is within the boundary |
156 | if (offset <= db->length - length) | |
157 | return 1; | |
18638ad2 | 158 | |
975f280f MT |
159 | DEBUG(db->ctx, "Database read check failed at %p for %zu byte(s)\n", p, length); |
160 | DEBUG(db->ctx, " p = %p (offset = %jd, length = %zu)\n", p, offset, length); | |
161 | DEBUG(db->ctx, " data = %p (length = %zu)\n", db->data, db->length); | |
162 | DEBUG(db->ctx, " end = %p\n", db->data + db->length); | |
163 | DEBUG(db->ctx, " overflow of %zu byte(s)\n", offset + length - db->length); | |
18638ad2 | 164 | |
975f280f MT |
165 | // Otherwise raise EFAULT |
166 | errno = EFAULT; | |
167 | return 0; | |
168 | } | |
169 | ||
170 | /* | |
171 | Returns a pointer to the n-th object | |
172 | */ | |
0e0be76c | 173 | static inline char* loc_database_object(struct loc_database* db, |
975f280f | 174 | const struct loc_database_objects* objects, const size_t length, const off_t n) { |
975f280f MT |
175 | // Calculate offset |
176 | const off_t offset = n * length; | |
177 | ||
178 | // Return a pointer to where the object lies | |
179 | char* object = objects->data + offset; | |
180 | ||
181 | // Check if the object is part of the memory | |
182 | if (!__loc_database_check_boundaries(db, object, length)) | |
183 | return NULL; | |
184 | ||
185 | return object; | |
18638ad2 MT |
186 | } |
187 | ||
5acc1d5f MT |
188 | static int loc_database_version_supported(struct loc_database* db, uint8_t version) { |
189 | switch (version) { | |
190 | // Supported versions | |
191 | case LOC_DATABASE_VERSION_1: | |
192 | return 1; | |
193 | ||
194 | default: | |
195 | ERROR(db->ctx, "Database version %d is not supported\n", version); | |
196 | errno = ENOTSUP; | |
197 | return 0; | |
198 | } | |
199 | } | |
200 | ||
546c0ac0 | 201 | static int loc_database_check_magic(struct loc_database* db) { |
2601e83e MT |
202 | struct loc_database_magic magic; |
203 | ||
204 | // Read from file | |
b1720435 | 205 | size_t bytes_read = fread(&magic, 1, sizeof(magic), db->f); |
2601e83e MT |
206 | |
207 | // Check if we have been able to read enough data | |
208 | if (bytes_read < sizeof(magic)) { | |
209 | ERROR(db->ctx, "Could not read enough data to validate magic bytes\n"); | |
210 | DEBUG(db->ctx, "Read %zu bytes, but needed %zu\n", bytes_read, sizeof(magic)); | |
808d6ac8 | 211 | goto ERROR; |
2601e83e MT |
212 | } |
213 | ||
214 | // Compare magic bytes | |
546c0ac0 | 215 | if (memcmp(magic.magic, LOC_DATABASE_MAGIC, sizeof(magic.magic)) == 0) { |
2601e83e MT |
216 | DEBUG(db->ctx, "Magic value matches\n"); |
217 | ||
5acc1d5f MT |
218 | // Do we support this version? |
219 | if (!loc_database_version_supported(db, magic.version)) | |
220 | return 1; | |
221 | ||
2601e83e | 222 | // Parse version |
22c7b98b | 223 | db->version = magic.version; |
2601e83e MT |
224 | |
225 | return 0; | |
226 | } | |
227 | ||
808d6ac8 | 228 | ERROR: |
22c7b98b | 229 | ERROR(db->ctx, "Unrecognized file type\n"); |
808d6ac8 | 230 | errno = ENOMSG; |
2601e83e MT |
231 | |
232 | // Return an error | |
233 | return 1; | |
234 | } | |
235 | ||
3496a16c MT |
236 | /* |
237 | Maps the entire database into memory | |
238 | */ | |
239 | static int loc_database_mmap(struct loc_database* db) { | |
e63d76be MT |
240 | int r; |
241 | ||
242 | // Get file descriptor | |
3496a16c MT |
243 | int fd = fileno(db->f); |
244 | ||
245 | // Determine the length of the database | |
246 | db->length = lseek(fd, 0, SEEK_END); | |
247 | if (db->length < 0) { | |
248 | ERROR(db->ctx, "Could not determine the length of the database: %m\n"); | |
249 | return 1; | |
250 | } | |
251 | ||
252 | rewind(db->f); | |
253 | ||
254 | // Map all data | |
255 | db->data = mmap(NULL, db->length, PROT_READ, MAP_SHARED, fd, 0); | |
256 | if (db->data == MAP_FAILED) { | |
257 | ERROR(db->ctx, "Could not map the database: %m\n"); | |
258 | db->data = NULL; | |
259 | return 1; | |
260 | } | |
261 | ||
262 | DEBUG(db->ctx, "Mapped database of %zu byte(s) at %p\n", db->length, db->data); | |
263 | ||
e63d76be MT |
264 | // Tell the system that we expect to read data randomly |
265 | r = madvise(db->data, db->length, MADV_RANDOM); | |
266 | if (r) { | |
267 | ERROR(db->ctx, "madvise() failed: %m\n"); | |
268 | return r; | |
269 | } | |
270 | ||
3496a16c MT |
271 | return 0; |
272 | } | |
273 | ||
18638ad2 MT |
274 | /* |
275 | Maps arbitrary objects from the database into memory. | |
276 | */ | |
277 | static int loc_database_map_objects(struct loc_database* db, | |
278 | struct loc_database_objects* objects, const size_t size, | |
279 | off_t offset, size_t length) { | |
18638ad2 | 280 | // Store parameters |
866ae435 | 281 | objects->data = db->data + offset; |
18638ad2 MT |
282 | objects->offset = offset; |
283 | objects->length = length; | |
284 | objects->count = objects->length / size; | |
a5db3e49 | 285 | |
866ae435 MT |
286 | return 0; |
287 | } | |
a735a563 | 288 | |
866ae435 MT |
289 | static int loc_database_read_signature(struct loc_database* db, |
290 | struct loc_database_signature* signature, const char* data, const size_t length) { | |
291 | // Check for a plausible signature length | |
292 | if (length > LOC_SIGNATURE_MAX_LENGTH) { | |
293 | ERROR(db->ctx, "Signature too long: %zu\n", length); | |
294 | errno = EINVAL; | |
18638ad2 | 295 | return 1; |
a735a563 MT |
296 | } |
297 | ||
866ae435 MT |
298 | // Store data & length |
299 | signature->data = data; | |
300 | signature->length = length; | |
a735a563 | 301 | |
866ae435 MT |
302 | DEBUG(db->ctx, "Read signature of %zu byte(s) at %p\n", |
303 | signature->length, signature->data); | |
ec684c1a | 304 | |
866ae435 | 305 | hexdump(db->ctx, signature->data, signature->length); |
ec684c1a | 306 | |
ec684c1a MT |
307 | return 0; |
308 | } | |
309 | ||
b904896a | 310 | static int loc_database_read_header_v1(struct loc_database* db) { |
866ae435 MT |
311 | const struct loc_database_header_v1* header = |
312 | (const struct loc_database_header_v1*)(db->data + LOC_DATABASE_MAGIC_SIZE); | |
5ce881d4 | 313 | int r; |
2601e83e | 314 | |
866ae435 | 315 | DEBUG(db->ctx, "Reading header at %p\n", header); |
2601e83e | 316 | |
866ae435 MT |
317 | // Check if we can read the header |
318 | if (!loc_database_check_boundaries(db, header)) { | |
2601e83e | 319 | ERROR(db->ctx, "Could not read enough data for header\n"); |
18638ad2 | 320 | return 1; |
2601e83e MT |
321 | } |
322 | ||
866ae435 MT |
323 | // Dump the entire header |
324 | hexdump(db->ctx, header, sizeof(*header)); | |
2601e83e | 325 | |
866ae435 MT |
326 | // Copy over data |
327 | db->created_at = be64toh(header->created_at); | |
328 | db->vendor = be32toh(header->vendor); | |
329 | db->description = be32toh(header->description); | |
330 | db->license = be32toh(header->license); | |
726f9984 | 331 | |
5ce881d4 | 332 | // Read signatures |
866ae435 MT |
333 | r = loc_database_read_signature(db, &db->signature1, |
334 | header->signature1, be16toh(header->signature1_length)); | |
335 | if (r) | |
336 | return r; | |
726f9984 | 337 | |
866ae435 MT |
338 | r = loc_database_read_signature(db, &db->signature2, |
339 | header->signature2, be16toh(header->signature2_length)); | |
340 | if (r) | |
341 | return r; | |
726f9984 | 342 | |
975f280f MT |
343 | const char* stringpool_start = db->data + be32toh(header->pool_offset); |
344 | size_t stringpool_length = be32toh(header->pool_length); | |
345 | ||
346 | // Check if the stringpool is part of the mapped area | |
347 | if (!__loc_database_check_boundaries(db, stringpool_start, stringpool_length)) | |
348 | return 1; | |
349 | ||
18638ad2 | 350 | // Open the stringpool |
975f280f | 351 | r = loc_stringpool_open(db->ctx, &db->pool, stringpool_start, stringpool_length); |
2601e83e MT |
352 | if (r) |
353 | return r; | |
354 | ||
18638ad2 MT |
355 | // Map AS objects |
356 | r = loc_database_map_objects(db, &db->as_objects, | |
357 | sizeof(struct loc_database_as_v1), | |
866ae435 MT |
358 | be32toh(header->as_offset), |
359 | be32toh(header->as_length)); | |
a5db3e49 MT |
360 | if (r) |
361 | return r; | |
362 | ||
18638ad2 MT |
363 | // Map Network Nodes |
364 | r = loc_database_map_objects(db, &db->network_node_objects, | |
365 | sizeof(struct loc_database_network_node_v1), | |
866ae435 MT |
366 | be32toh(header->network_tree_offset), |
367 | be32toh(header->network_tree_length)); | |
f66b7b09 MT |
368 | if (r) |
369 | return r; | |
370 | ||
18638ad2 MT |
371 | // Map Networks |
372 | r = loc_database_map_objects(db, &db->network_objects, | |
373 | sizeof(struct loc_database_network_v1), | |
866ae435 MT |
374 | be32toh(header->network_data_offset), |
375 | be32toh(header->network_data_length)); | |
a735a563 MT |
376 | if (r) |
377 | return r; | |
378 | ||
18638ad2 MT |
379 | // Map countries |
380 | r = loc_database_map_objects(db, &db->country_objects, | |
381 | sizeof(struct loc_database_country_v1), | |
866ae435 MT |
382 | be32toh(header->countries_offset), |
383 | be32toh(header->countries_length)); | |
ec684c1a MT |
384 | if (r) |
385 | return r; | |
386 | ||
2601e83e MT |
387 | return 0; |
388 | } | |
389 | ||
b1720435 | 390 | static int loc_database_read_header(struct loc_database* db) { |
22c7b98b MT |
391 | DEBUG(db->ctx, "Database version is %u\n", db->version); |
392 | ||
2601e83e | 393 | switch (db->version) { |
22c7b98b | 394 | case LOC_DATABASE_VERSION_1: |
b904896a | 395 | return loc_database_read_header_v1(db); |
2601e83e MT |
396 | |
397 | default: | |
398 | ERROR(db->ctx, "Incompatible database version: %u\n", db->version); | |
399 | return 1; | |
400 | } | |
401 | } | |
402 | ||
1642ccea MT |
403 | static int loc_database_clone_handle(struct loc_database* db, FILE* f) { |
404 | // Fetch the FD of the original handle | |
b1720435 MT |
405 | int fd = fileno(f); |
406 | ||
407 | // Clone file descriptor | |
408 | fd = dup(fd); | |
409 | if (!fd) { | |
410 | ERROR(db->ctx, "Could not duplicate file descriptor\n"); | |
1642ccea | 411 | return 1; |
b1720435 MT |
412 | } |
413 | ||
414 | // Reopen the file so that we can keep our own file handle | |
415 | db->f = fdopen(fd, "r"); | |
416 | if (!db->f) { | |
417 | ERROR(db->ctx, "Could not re-open database file\n"); | |
1642ccea | 418 | return 1; |
b1720435 MT |
419 | } |
420 | ||
421 | // Rewind to the start of the file | |
422 | rewind(db->f); | |
423 | ||
1642ccea MT |
424 | return 0; |
425 | } | |
426 | ||
427 | static int loc_database_open(struct loc_database* db, FILE* f) { | |
428 | int r; | |
429 | ||
430 | clock_t start = clock(); | |
431 | ||
432 | // Clone the file handle | |
433 | r = loc_database_clone_handle(db, f); | |
434 | if (r) | |
435 | return r; | |
436 | ||
02879100 | 437 | // Read magic bytes |
546c0ac0 | 438 | r = loc_database_check_magic(db); |
02879100 MT |
439 | if (r) |
440 | return r; | |
441 | ||
3496a16c MT |
442 | // Map the database into memory |
443 | r = loc_database_mmap(db); | |
444 | if (r) | |
445 | return r; | |
446 | ||
02879100 | 447 | // Read the header |
b1720435 | 448 | r = loc_database_read_header(db); |
02879100 MT |
449 | if (r) |
450 | return r; | |
451 | ||
452 | clock_t end = clock(); | |
453 | ||
e16c943b MT |
454 | INFO(db->ctx, "Opened database in %.4fms\n", |
455 | (double)(end - start) / CLOCKS_PER_SEC * 1000); | |
02879100 MT |
456 | |
457 | return 0; | |
458 | } | |
459 | ||
c182393f | 460 | static void loc_database_free(struct loc_database* db) { |
3496a16c MT |
461 | int r; |
462 | ||
c182393f | 463 | DEBUG(db->ctx, "Releasing database %p\n", db); |
c34e76f1 | 464 | |
3496a16c MT |
465 | // Unmap the entire database |
466 | if (db->data) { | |
467 | r = munmap(db->data, db->length); | |
468 | if (r) | |
469 | ERROR(db->ctx, "Could not unmap the database: %m\n"); | |
470 | } | |
471 | ||
18638ad2 | 472 | // Free the stringpool |
414d8958 MT |
473 | if (db->pool) |
474 | loc_stringpool_unref(db->pool); | |
c34e76f1 | 475 | |
b1720435 MT |
476 | // Close database file |
477 | if (db->f) | |
478 | fclose(db->f); | |
479 | ||
c182393f MT |
480 | loc_unref(db->ctx); |
481 | free(db); | |
c34e76f1 MT |
482 | } |
483 | ||
50c0fbcd MT |
484 | LOC_EXPORT int loc_database_new(struct loc_ctx* ctx, struct loc_database** database, FILE* f) { |
485 | struct loc_database* db = NULL; | |
486 | int r; | |
487 | ||
488 | // Fail on invalid file handle | |
489 | if (!f) { | |
490 | errno = EINVAL; | |
491 | return 1; | |
492 | } | |
493 | ||
494 | // Allocate the database object | |
495 | db = calloc(1, sizeof(*db)); | |
496 | if (!db) | |
497 | goto ERROR; | |
498 | ||
499 | // Reference context | |
500 | db->ctx = loc_ref(ctx); | |
501 | db->refcount = 1; | |
502 | ||
503 | DEBUG(db->ctx, "Database object allocated at %p\n", db); | |
504 | ||
505 | // Try to open the database | |
1642ccea | 506 | r = loc_database_open(db, f); |
50c0fbcd MT |
507 | if (r) |
508 | goto ERROR; | |
509 | ||
510 | *database = db; | |
511 | return 0; | |
512 | ||
513 | ERROR: | |
514 | if (db) | |
515 | loc_database_free(db); | |
516 | ||
517 | return r; | |
518 | } | |
519 | ||
520 | LOC_EXPORT struct loc_database* loc_database_ref(struct loc_database* db) { | |
521 | db->refcount++; | |
522 | ||
523 | return db; | |
524 | } | |
525 | ||
c182393f MT |
526 | LOC_EXPORT struct loc_database* loc_database_unref(struct loc_database* db) { |
527 | if (--db->refcount > 0) | |
528 | return NULL; | |
78ace4ed | 529 | |
c182393f MT |
530 | loc_database_free(db); |
531 | return NULL; | |
532 | } | |
78ace4ed | 533 | |
726f9984 | 534 | LOC_EXPORT int loc_database_verify(struct loc_database* db, FILE* f) { |
98b2876e MT |
535 | size_t bytes_read = 0; |
536 | ||
726f9984 | 537 | // Cannot do this when no signature is available |
866ae435 | 538 | if (!db->signature1.data && !db->signature2.data) { |
726f9984 MT |
539 | DEBUG(db->ctx, "No signature available to verify\n"); |
540 | return 1; | |
541 | } | |
542 | ||
c81205a5 MT |
543 | // Start the stopwatch |
544 | clock_t start = clock(); | |
545 | ||
726f9984 MT |
546 | // Load public key |
547 | EVP_PKEY* pkey = PEM_read_PUBKEY(f, NULL, NULL, NULL); | |
548 | if (!pkey) { | |
6cd02f1d MT |
549 | ERROR(db->ctx, "Could not parse public key: %s\n", |
550 | ERR_error_string(ERR_get_error(), NULL)); | |
726f9984 MT |
551 | |
552 | return -1; | |
553 | } | |
554 | ||
b1720435 MT |
555 | int r = 0; |
556 | ||
557 | EVP_MD_CTX* mdctx = EVP_MD_CTX_new(); | |
558 | ||
b1720435 | 559 | // Initialise hash function |
e7f4b2ce MT |
560 | r = EVP_DigestVerifyInit(mdctx, NULL, NULL, NULL, pkey); |
561 | if (r != 1) { | |
562 | ERROR(db->ctx, "Error initializing signature validation: %s\n", | |
563 | ERR_error_string(ERR_get_error(), NULL)); | |
564 | r = 1; | |
565 | ||
566 | goto CLEANUP; | |
567 | } | |
b1720435 MT |
568 | |
569 | // Reset file to start | |
570 | rewind(db->f); | |
571 | ||
572 | // Read magic | |
573 | struct loc_database_magic magic; | |
98b2876e MT |
574 | bytes_read = fread(&magic, 1, sizeof(magic), db->f); |
575 | if (bytes_read < sizeof(magic)) { | |
576 | ERROR(db->ctx, "Could not read header: %m\n"); | |
577 | r = 1; | |
578 | goto CLEANUP; | |
579 | } | |
b1720435 | 580 | |
a0cff45d MT |
581 | hexdump(db->ctx, &magic, sizeof(magic)); |
582 | ||
b1720435 | 583 | // Feed magic into the hash |
e7f4b2ce MT |
584 | r = EVP_DigestVerifyUpdate(mdctx, &magic, sizeof(magic)); |
585 | if (r != 1) { | |
586 | ERROR(db->ctx, "%s\n", ERR_error_string(ERR_get_error(), NULL)); | |
587 | r = 1; | |
588 | ||
589 | goto CLEANUP; | |
590 | } | |
b1720435 MT |
591 | |
592 | // Read the header | |
b904896a | 593 | struct loc_database_header_v1 header_v1; |
b1720435 MT |
594 | |
595 | switch (db->version) { | |
22c7b98b | 596 | case LOC_DATABASE_VERSION_1: |
54f0649f MT |
597 | bytes_read = fread(&header_v1, 1, sizeof(header_v1), db->f); |
598 | if (bytes_read < sizeof(header_v1)) { | |
599 | ERROR(db->ctx, "Could not read header\n"); | |
600 | r = 1; | |
601 | ||
602 | goto CLEANUP; | |
603 | } | |
b1720435 | 604 | |
5ce881d4 MT |
605 | // Clear signatures |
606 | memset(header_v1.signature1, '\0', sizeof(header_v1.signature1)); | |
607 | header_v1.signature1_length = 0; | |
608 | memset(header_v1.signature2, '\0', sizeof(header_v1.signature2)); | |
609 | header_v1.signature2_length = 0; | |
b1720435 | 610 | |
b904896a | 611 | hexdump(db->ctx, &header_v1, sizeof(header_v1)); |
a0cff45d | 612 | |
b1720435 | 613 | // Feed header into the hash |
b904896a | 614 | r = EVP_DigestVerifyUpdate(mdctx, &header_v1, sizeof(header_v1)); |
e7f4b2ce MT |
615 | if (r != 1) { |
616 | ERROR(db->ctx, "%s\n", ERR_error_string(ERR_get_error(), NULL)); | |
617 | r = 1; | |
618 | ||
619 | goto CLEANUP; | |
620 | } | |
b1720435 MT |
621 | break; |
622 | ||
623 | default: | |
624 | ERROR(db->ctx, "Cannot compute hash for database with format %d\n", | |
625 | db->version); | |
626 | r = -EINVAL; | |
627 | goto CLEANUP; | |
628 | } | |
629 | ||
726f9984 MT |
630 | // Walk through the file in chunks of 64kB |
631 | char buffer[64 * 1024]; | |
b1720435 MT |
632 | |
633 | while (!feof(db->f)) { | |
54f0649f | 634 | bytes_read = fread(buffer, 1, sizeof(buffer), db->f); |
b1720435 | 635 | |
a0cff45d MT |
636 | hexdump(db->ctx, buffer, bytes_read); |
637 | ||
e7f4b2ce MT |
638 | r = EVP_DigestVerifyUpdate(mdctx, buffer, bytes_read); |
639 | if (r != 1) { | |
640 | ERROR(db->ctx, "%s\n", ERR_error_string(ERR_get_error(), NULL)); | |
641 | r = 1; | |
642 | ||
643 | goto CLEANUP; | |
644 | } | |
b1720435 MT |
645 | } |
646 | ||
5ce881d4 | 647 | // Check first signature |
866ae435 MT |
648 | if (db->signature1.data) { |
649 | hexdump(db->ctx, db->signature1.data, db->signature1.length); | |
726f9984 | 650 | |
5ce881d4 | 651 | r = EVP_DigestVerifyFinal(mdctx, |
866ae435 | 652 | (unsigned char*)db->signature1.data, db->signature1.length); |
5ce881d4 MT |
653 | |
654 | if (r == 0) { | |
655 | DEBUG(db->ctx, "The first signature is invalid\n"); | |
656 | r = 1; | |
657 | } else if (r == 1) { | |
658 | DEBUG(db->ctx, "The first signature is valid\n"); | |
659 | r = 0; | |
660 | } else { | |
661 | ERROR(db->ctx, "Error verifying the first signature: %s\n", | |
662 | ERR_error_string(ERR_get_error(), NULL)); | |
663 | r = -1; | |
664 | } | |
b1720435 MT |
665 | } |
666 | ||
5ce881d4 | 667 | // Check second signature only when the first one was invalid |
866ae435 MT |
668 | if (r && db->signature2.data) { |
669 | hexdump(db->ctx, db->signature2.data, db->signature2.length); | |
5ce881d4 MT |
670 | |
671 | r = EVP_DigestVerifyFinal(mdctx, | |
866ae435 | 672 | (unsigned char*)db->signature2.data, db->signature2.length); |
5ce881d4 MT |
673 | |
674 | if (r == 0) { | |
675 | DEBUG(db->ctx, "The second signature is invalid\n"); | |
676 | r = 1; | |
677 | } else if (r == 1) { | |
678 | DEBUG(db->ctx, "The second signature is valid\n"); | |
679 | r = 0; | |
680 | } else { | |
681 | ERROR(db->ctx, "Error verifying the second signature: %s\n", | |
682 | ERR_error_string(ERR_get_error(), NULL)); | |
683 | r = -1; | |
684 | } | |
685 | } | |
257626f5 | 686 | |
c81205a5 | 687 | clock_t end = clock(); |
6661692f | 688 | INFO(db->ctx, "Signature checked in %.4fms\n", |
c81205a5 MT |
689 | (double)(end - start) / CLOCKS_PER_SEC * 1000); |
690 | ||
b1720435 MT |
691 | CLEANUP: |
692 | // Cleanup | |
693 | EVP_MD_CTX_free(mdctx); | |
726f9984 | 694 | EVP_PKEY_free(pkey); |
b1720435 MT |
695 | |
696 | return r; | |
697 | } | |
698 | ||
c182393f MT |
699 | LOC_EXPORT time_t loc_database_created_at(struct loc_database* db) { |
700 | return db->created_at; | |
701 | } | |
78ace4ed | 702 | |
c182393f MT |
703 | LOC_EXPORT const char* loc_database_get_vendor(struct loc_database* db) { |
704 | return loc_stringpool_get(db->pool, db->vendor); | |
705 | } | |
78ace4ed | 706 | |
c182393f MT |
707 | LOC_EXPORT const char* loc_database_get_description(struct loc_database* db) { |
708 | return loc_stringpool_get(db->pool, db->description); | |
709 | } | |
78ace4ed | 710 | |
4bf49d00 MT |
711 | LOC_EXPORT const char* loc_database_get_license(struct loc_database* db) { |
712 | return loc_stringpool_get(db->pool, db->license); | |
713 | } | |
714 | ||
c182393f | 715 | LOC_EXPORT size_t loc_database_count_as(struct loc_database* db) { |
18638ad2 | 716 | return db->as_objects.count; |
78ace4ed MT |
717 | } |
718 | ||
c182393f MT |
719 | // Returns the AS at position pos |
720 | static int loc_database_fetch_as(struct loc_database* db, struct loc_as** as, off_t pos) { | |
975f280f | 721 | struct loc_database_as_v1* as_v1 = NULL; |
18638ad2 MT |
722 | int r; |
723 | ||
724 | if ((size_t)pos >= db->as_objects.count) { | |
725 | errno = ERANGE; | |
726 | return 1; | |
727 | } | |
2601e83e | 728 | |
5c57de03 | 729 | DEBUG(db->ctx, "Fetching AS at position %jd\n", (intmax_t)pos); |
2601e83e | 730 | |
c182393f | 731 | switch (db->version) { |
22c7b98b | 732 | case LOC_DATABASE_VERSION_1: |
975f280f MT |
733 | // Find the object |
734 | as_v1 = (struct loc_database_as_v1*)loc_database_object(db, | |
735 | &db->as_objects, sizeof(*as_v1), pos); | |
736 | if (!as_v1) | |
18638ad2 MT |
737 | return 1; |
738 | ||
975f280f | 739 | r = loc_as_new_from_database_v1(db->ctx, db->pool, as, as_v1); |
c182393f | 740 | break; |
2601e83e | 741 | |
c182393f | 742 | default: |
18638ad2 MT |
743 | errno = ENOTSUP; |
744 | return 1; | |
c182393f | 745 | } |
2601e83e | 746 | |
18638ad2 | 747 | if (r == 0) |
c182393f | 748 | DEBUG(db->ctx, "Got AS%u\n", loc_as_get_number(*as)); |
2601e83e | 749 | |
c182393f MT |
750 | return r; |
751 | } | |
c34e76f1 | 752 | |
c182393f MT |
753 | // Performs a binary search to find the AS in the list |
754 | LOC_EXPORT int loc_database_get_as(struct loc_database* db, struct loc_as** as, uint32_t number) { | |
755 | off_t lo = 0; | |
18638ad2 | 756 | off_t hi = db->as_objects.count - 1; |
c34e76f1 | 757 | |
6661692f | 758 | #ifdef ENABLE_DEBUG |
8f3e2a06 MT |
759 | // Save start time |
760 | clock_t start = clock(); | |
6661692f | 761 | #endif |
8f3e2a06 | 762 | |
c182393f MT |
763 | while (lo <= hi) { |
764 | off_t i = (lo + hi) / 2; | |
8f5b676a | 765 | |
c182393f MT |
766 | // Fetch AS in the middle between lo and hi |
767 | int r = loc_database_fetch_as(db, as, i); | |
768 | if (r) | |
769 | return r; | |
a5db3e49 | 770 | |
c182393f MT |
771 | // Check if this is a match |
772 | uint32_t as_number = loc_as_get_number(*as); | |
8f3e2a06 | 773 | if (as_number == number) { |
6661692f | 774 | #ifdef ENABLE_DEBUG |
8f3e2a06 MT |
775 | clock_t end = clock(); |
776 | ||
777 | // Log how fast this has been | |
e16c943b MT |
778 | DEBUG(db->ctx, "Found AS%u in %.4fms\n", as_number, |
779 | (double)(end - start) / CLOCKS_PER_SEC * 1000); | |
6661692f | 780 | #endif |
8f3e2a06 | 781 | |
c182393f | 782 | return 0; |
8f3e2a06 | 783 | } |
c182393f MT |
784 | |
785 | // If it wasn't, we release the AS and | |
786 | // adjust our search pointers | |
787 | loc_as_unref(*as); | |
788 | ||
789 | if (as_number < number) { | |
790 | lo = i + 1; | |
791 | } else | |
792 | hi = i - 1; | |
793 | } | |
2601e83e | 794 | |
c182393f MT |
795 | // Nothing found |
796 | *as = NULL; | |
2601e83e | 797 | |
8f3e2a06 | 798 | return 1; |
2601e83e | 799 | } |
10778041 MT |
800 | |
801 | // Returns the network at position pos | |
39a55353 MT |
802 | static int loc_database_fetch_network(struct loc_database* db, struct loc_network** network, |
803 | struct in6_addr* address, unsigned int prefix, off_t pos) { | |
975f280f | 804 | struct loc_database_network_v1* network_v1 = NULL; |
18638ad2 MT |
805 | int r; |
806 | ||
807 | if ((size_t)pos >= db->network_objects.count) { | |
9b9e5faf | 808 | DEBUG(db->ctx, "Network ID out of range: %jd/%jd\n", |
18638ad2 MT |
809 | (intmax_t)pos, (intmax_t)db->network_objects.count); |
810 | errno = ERANGE; | |
811 | return 1; | |
9b9e5faf MT |
812 | } |
813 | ||
5c57de03 | 814 | DEBUG(db->ctx, "Fetching network at position %jd\n", (intmax_t)pos); |
10778041 | 815 | |
10778041 | 816 | switch (db->version) { |
22c7b98b | 817 | case LOC_DATABASE_VERSION_1: |
18638ad2 | 818 | // Read the object |
975f280f MT |
819 | network_v1 = (struct loc_database_network_v1*)loc_database_object(db, |
820 | &db->network_objects, sizeof(*network_v1), pos); | |
821 | if (!network_v1) | |
18638ad2 MT |
822 | return 1; |
823 | ||
975f280f | 824 | r = loc_network_new_from_database_v1(db->ctx, network, address, prefix, network_v1); |
10778041 MT |
825 | break; |
826 | ||
827 | default: | |
18638ad2 MT |
828 | errno = ENOTSUP; |
829 | return 1; | |
10778041 MT |
830 | } |
831 | ||
0a0a289a MT |
832 | if (r == 0) |
833 | DEBUG(db->ctx, "Got network %s\n", loc_network_str(*network)); | |
10778041 MT |
834 | |
835 | return r; | |
836 | } | |
2a30e4de | 837 | |
b904896a | 838 | static int __loc_database_node_is_leaf(const struct loc_database_network_node_v1* node) { |
39a55353 | 839 | return (node->network != htobe32(0xffffffff)); |
025ef489 MT |
840 | } |
841 | ||
842 | static int __loc_database_lookup_handle_leaf(struct loc_database* db, const struct in6_addr* address, | |
39a55353 | 843 | struct loc_network** network, struct in6_addr* network_address, unsigned int prefix, |
b904896a | 844 | const struct loc_database_network_node_v1* node) { |
39a55353 MT |
845 | off_t network_index = be32toh(node->network); |
846 | ||
18638ad2 | 847 | DEBUG(db->ctx, "Handling leaf node at %jd\n", (intmax_t)network_index); |
2a30e4de MT |
848 | |
849 | // Fetch the network | |
18638ad2 | 850 | int r = loc_database_fetch_network(db, network, network_address, prefix, network_index); |
e85e2b0b | 851 | if (r) { |
18638ad2 MT |
852 | ERROR(db->ctx, "Could not fetch network %jd from database: %m\n", |
853 | (intmax_t)network_index); | |
2a30e4de | 854 | return r; |
e85e2b0b | 855 | } |
39a55353 | 856 | |
2a30e4de | 857 | // Check if the given IP address is inside the network |
0258d3c9 | 858 | if (!loc_network_matches_address(*network, address)) { |
2a30e4de MT |
859 | DEBUG(db->ctx, "Searched address is not part of the network\n"); |
860 | ||
861 | loc_network_unref(*network); | |
862 | *network = NULL; | |
863 | return 1; | |
864 | } | |
865 | ||
866 | // A network was found and the IP address matches | |
867 | return 0; | |
868 | } | |
869 | ||
2a30e4de MT |
870 | // Searches for an exact match along the path |
871 | static int __loc_database_lookup(struct loc_database* db, const struct in6_addr* address, | |
872 | struct loc_network** network, struct in6_addr* network_address, | |
18638ad2 | 873 | off_t node_index, unsigned int level) { |
975f280f | 874 | struct loc_database_network_node_v1* node_v1 = NULL; |
18638ad2 | 875 | |
025ef489 | 876 | int r; |
18638ad2 MT |
877 | |
878 | // Fetch the next node | |
975f280f MT |
879 | node_v1 = (struct loc_database_network_node_v1*)loc_database_object(db, |
880 | &db->network_node_objects, sizeof(*node_v1), node_index); | |
881 | if (!node_v1) | |
18638ad2 | 882 | return 1; |
2a30e4de MT |
883 | |
884 | // Follow the path | |
d698ca09 MT |
885 | int bit = loc_address_get_bit(address, level); |
886 | loc_address_set_bit(network_address, level, bit); | |
2a30e4de MT |
887 | |
888 | if (bit == 0) | |
975f280f | 889 | node_index = be32toh(node_v1->zero); |
2a30e4de | 890 | else |
975f280f | 891 | node_index = be32toh(node_v1->one); |
2a30e4de | 892 | |
9086d2b1 MT |
893 | // If the node index is zero, the tree ends here |
894 | // and we cannot descend any further | |
895 | if (node_index > 0) { | |
896 | // Check boundaries | |
18638ad2 MT |
897 | if ((size_t)node_index >= db->network_node_objects.count) { |
898 | errno = ERANGE; | |
899 | return 1; | |
900 | } | |
2a30e4de | 901 | |
9086d2b1 | 902 | // Move on to the next node |
18638ad2 | 903 | r = __loc_database_lookup(db, address, network, network_address, node_index, level + 1); |
2a30e4de | 904 | |
9086d2b1 MT |
905 | // End here if a result was found |
906 | if (r == 0) | |
907 | return r; | |
2a30e4de | 908 | |
9086d2b1 MT |
909 | // Raise any errors |
910 | else if (r < 0) | |
911 | return r; | |
ec1d9681 MT |
912 | |
913 | DEBUG(db->ctx, "No match found below level %u\n", level); | |
914 | } else { | |
915 | DEBUG(db->ctx, "Tree ended at level %u\n", level); | |
9086d2b1 | 916 | } |
2a30e4de | 917 | |
9086d2b1 | 918 | // If this node has a leaf, we will check if it matches |
975f280f MT |
919 | if (__loc_database_node_is_leaf(node_v1)) { |
920 | r = __loc_database_lookup_handle_leaf(db, address, network, network_address, level, node_v1); | |
9086d2b1 MT |
921 | if (r <= 0) |
922 | return r; | |
923 | } | |
2a30e4de | 924 | |
ec1d9681 | 925 | return 1; |
2a30e4de MT |
926 | } |
927 | ||
928 | LOC_EXPORT int loc_database_lookup(struct loc_database* db, | |
a178efea | 929 | const struct in6_addr* address, struct loc_network** network) { |
2a30e4de MT |
930 | struct in6_addr network_address; |
931 | memset(&network_address, 0, sizeof(network_address)); | |
932 | ||
933 | *network = NULL; | |
934 | ||
6661692f | 935 | #ifdef ENABLE_DEBUG |
2a30e4de MT |
936 | // Save start time |
937 | clock_t start = clock(); | |
6661692f | 938 | #endif |
2a30e4de | 939 | |
18638ad2 | 940 | int r = __loc_database_lookup(db, address, network, &network_address, 0, 0); |
2a30e4de | 941 | |
6661692f | 942 | #ifdef ENABLE_DEBUG |
2a30e4de MT |
943 | clock_t end = clock(); |
944 | ||
945 | // Log how fast this has been | |
e16c943b MT |
946 | DEBUG(db->ctx, "Executed network search in %.4fms\n", |
947 | (double)(end - start) / CLOCKS_PER_SEC * 1000); | |
6661692f | 948 | #endif |
2a30e4de MT |
949 | |
950 | return r; | |
951 | } | |
952 | ||
953 | LOC_EXPORT int loc_database_lookup_from_string(struct loc_database* db, | |
954 | const char* string, struct loc_network** network) { | |
955 | struct in6_addr address; | |
956 | ||
95b6a8e4 | 957 | int r = loc_address_parse(&address, NULL, string); |
2a30e4de MT |
958 | if (r) |
959 | return r; | |
960 | ||
961 | return loc_database_lookup(db, &address, network); | |
962 | } | |
7e13db74 | 963 | |
ec684c1a MT |
964 | // Returns the country at position pos |
965 | static int loc_database_fetch_country(struct loc_database* db, | |
966 | struct loc_country** country, off_t pos) { | |
975f280f | 967 | struct loc_database_country_v1* country_v1 = NULL; |
18638ad2 MT |
968 | int r; |
969 | ||
970 | // Check if the country is within range | |
971 | if ((size_t)pos >= db->country_objects.count) { | |
972 | errno = ERANGE; | |
973 | return 1; | |
974 | } | |
ec684c1a | 975 | |
2e2325a9 | 976 | DEBUG(db->ctx, "Fetching country at position %jd\n", (intmax_t)pos); |
ec684c1a | 977 | |
ec684c1a | 978 | switch (db->version) { |
22c7b98b | 979 | case LOC_DATABASE_VERSION_1: |
18638ad2 | 980 | // Read the object |
975f280f MT |
981 | country_v1 = (struct loc_database_country_v1*)loc_database_object(db, |
982 | &db->country_objects, sizeof(*country_v1), pos); | |
983 | if (!country_v1) | |
18638ad2 MT |
984 | return 1; |
985 | ||
975f280f | 986 | r = loc_country_new_from_database_v1(db->ctx, db->pool, country, country_v1); |
ec684c1a MT |
987 | break; |
988 | ||
989 | default: | |
18638ad2 MT |
990 | errno = ENOTSUP; |
991 | return 1; | |
ec684c1a MT |
992 | } |
993 | ||
18638ad2 | 994 | if (r == 0) |
ec684c1a | 995 | DEBUG(db->ctx, "Got country %s\n", loc_country_get_code(*country)); |
ec684c1a MT |
996 | |
997 | return r; | |
998 | } | |
999 | ||
1000 | // Performs a binary search to find the country in the list | |
1001 | LOC_EXPORT int loc_database_get_country(struct loc_database* db, | |
1002 | struct loc_country** country, const char* code) { | |
1003 | off_t lo = 0; | |
18638ad2 | 1004 | off_t hi = db->country_objects.count - 1; |
ec684c1a | 1005 | |
8fcb5bc7 MT |
1006 | // Check if the country code is valid |
1007 | if (!loc_country_code_is_valid(code)) { | |
1008 | errno = EINVAL; | |
1009 | return 1; | |
1010 | } | |
1011 | ||
6661692f | 1012 | #ifdef ENABLE_DEBUG |
ec684c1a MT |
1013 | // Save start time |
1014 | clock_t start = clock(); | |
6661692f | 1015 | #endif |
ec684c1a MT |
1016 | |
1017 | while (lo <= hi) { | |
1018 | off_t i = (lo + hi) / 2; | |
1019 | ||
1020 | // Fetch country in the middle between lo and hi | |
1021 | int r = loc_database_fetch_country(db, country, i); | |
1022 | if (r) | |
1023 | return r; | |
1024 | ||
1025 | // Check if this is a match | |
1026 | const char* cc = loc_country_get_code(*country); | |
1027 | int result = strcmp(code, cc); | |
1028 | ||
1029 | if (result == 0) { | |
6661692f | 1030 | #ifdef ENABLE_DEBUG |
ec684c1a MT |
1031 | clock_t end = clock(); |
1032 | ||
1033 | // Log how fast this has been | |
1034 | DEBUG(db->ctx, "Found country %s in %.4fms\n", cc, | |
1035 | (double)(end - start) / CLOCKS_PER_SEC * 1000); | |
6661692f | 1036 | #endif |
ec684c1a MT |
1037 | |
1038 | return 0; | |
1039 | } | |
1040 | ||
1041 | // If it wasn't, we release the country and | |
1042 | // adjust our search pointers | |
1043 | loc_country_unref(*country); | |
1044 | ||
191830da | 1045 | if (result > 0) { |
ec684c1a MT |
1046 | lo = i + 1; |
1047 | } else | |
1048 | hi = i - 1; | |
1049 | } | |
1050 | ||
1051 | // Nothing found | |
1052 | *country = NULL; | |
1053 | ||
8fcb5bc7 | 1054 | return 0; |
ec684c1a MT |
1055 | } |
1056 | ||
7e13db74 MT |
1057 | // Enumerator |
1058 | ||
d87fd7a3 MT |
1059 | static void loc_database_enumerator_free(struct loc_database_enumerator* enumerator) { |
1060 | DEBUG(enumerator->ctx, "Releasing database enumerator %p\n", enumerator); | |
1061 | ||
1062 | // Release all references | |
1063 | loc_database_unref(enumerator->db); | |
1064 | loc_unref(enumerator->ctx); | |
1065 | ||
1066 | if (enumerator->string) | |
1067 | free(enumerator->string); | |
1068 | ||
5470d06c MT |
1069 | if (enumerator->countries) |
1070 | loc_country_list_unref(enumerator->countries); | |
1071 | ||
1072 | if (enumerator->asns) | |
1073 | loc_as_list_unref(enumerator->asns); | |
1074 | ||
d87fd7a3 | 1075 | // Free network search |
18638ad2 MT |
1076 | if (enumerator->networks_visited) |
1077 | free(enumerator->networks_visited); | |
d87fd7a3 | 1078 | |
8c37d8a7 | 1079 | // Free subnet/bogons stack |
d87fd7a3 MT |
1080 | if (enumerator->stack) |
1081 | loc_network_list_unref(enumerator->stack); | |
1082 | ||
065b3496 MT |
1083 | if (enumerator->subnets) |
1084 | loc_network_list_unref(enumerator->subnets); | |
1085 | ||
d87fd7a3 MT |
1086 | free(enumerator); |
1087 | } | |
1088 | ||
ccc7ab4e | 1089 | LOC_EXPORT int loc_database_enumerator_new(struct loc_database_enumerator** enumerator, |
681ff05c | 1090 | struct loc_database* db, enum loc_database_enumerator_mode mode, int flags) { |
18638ad2 MT |
1091 | int r; |
1092 | ||
7e13db74 | 1093 | struct loc_database_enumerator* e = calloc(1, sizeof(*e)); |
18638ad2 | 1094 | if (!e) { |
7e13db74 | 1095 | return -ENOMEM; |
18638ad2 | 1096 | } |
7e13db74 MT |
1097 | |
1098 | // Reference context | |
1099 | e->ctx = loc_ref(db->ctx); | |
1100 | e->db = loc_database_ref(db); | |
ccc7ab4e | 1101 | e->mode = mode; |
7e13db74 MT |
1102 | e->refcount = 1; |
1103 | ||
681ff05c MT |
1104 | // Flatten output? |
1105 | e->flatten = (flags & LOC_DB_ENUMERATOR_FLAGS_FLATTEN); | |
1106 | ||
e3f696c1 | 1107 | // Initialise graph search |
e3f696c1 | 1108 | e->network_stack_depth = 1; |
18638ad2 MT |
1109 | e->networks_visited = calloc(db->network_node_objects.count, sizeof(*e->networks_visited)); |
1110 | printf("COUNT = %zu, P = %p\n", db->network_node_objects.count, e->networks_visited); | |
1111 | if (!e->networks_visited) { | |
1112 | ERROR(db->ctx, "Could not allocated visited networks: %m\n"); | |
1113 | r = 1; | |
1114 | goto ERROR; | |
1115 | } | |
e3f696c1 | 1116 | |
d87fd7a3 | 1117 | // Allocate stack |
18638ad2 MT |
1118 | r = loc_network_list_new(e->ctx, &e->stack); |
1119 | if (r) | |
1120 | goto ERROR; | |
d87fd7a3 | 1121 | |
9306c68d MT |
1122 | // Initialize bogon search |
1123 | loc_address_reset(&e->gap6_start, AF_INET6); | |
1124 | loc_address_reset(&e->gap4_start, AF_INET); | |
1125 | ||
7e13db74 MT |
1126 | DEBUG(e->ctx, "Database enumerator object allocated at %p\n", e); |
1127 | ||
1128 | *enumerator = e; | |
1129 | return 0; | |
18638ad2 MT |
1130 | |
1131 | ERROR: | |
1132 | if (e) | |
1133 | loc_database_enumerator_free(e); | |
1134 | ||
1135 | return r; | |
7e13db74 MT |
1136 | } |
1137 | ||
1138 | LOC_EXPORT struct loc_database_enumerator* loc_database_enumerator_ref(struct loc_database_enumerator* enumerator) { | |
1139 | enumerator->refcount++; | |
1140 | ||
1141 | return enumerator; | |
1142 | } | |
1143 | ||
7e13db74 MT |
1144 | LOC_EXPORT struct loc_database_enumerator* loc_database_enumerator_unref(struct loc_database_enumerator* enumerator) { |
1145 | if (!enumerator) | |
1146 | return NULL; | |
1147 | ||
1148 | if (--enumerator->refcount > 0) | |
1149 | return enumerator; | |
1150 | ||
1151 | loc_database_enumerator_free(enumerator); | |
1152 | return NULL; | |
1153 | } | |
d3d8ede6 MT |
1154 | |
1155 | LOC_EXPORT int loc_database_enumerator_set_string(struct loc_database_enumerator* enumerator, const char* string) { | |
1156 | enumerator->string = strdup(string); | |
1157 | ||
1158 | // Make the string lowercase | |
1159 | for (char *p = enumerator->string; *p; p++) | |
1160 | *p = tolower(*p); | |
1161 | ||
1162 | return 0; | |
1163 | } | |
1164 | ||
e646a8f3 MT |
1165 | LOC_EXPORT struct loc_country_list* loc_database_enumerator_get_countries( |
1166 | struct loc_database_enumerator* enumerator) { | |
1167 | if (!enumerator->countries) | |
1168 | return NULL; | |
35bb3a32 | 1169 | |
e646a8f3 MT |
1170 | return loc_country_list_ref(enumerator->countries); |
1171 | } | |
4ef1761f | 1172 | |
e646a8f3 MT |
1173 | LOC_EXPORT int loc_database_enumerator_set_countries( |
1174 | struct loc_database_enumerator* enumerator, struct loc_country_list* countries) { | |
1175 | if (enumerator->countries) | |
1176 | loc_country_list_unref(enumerator->countries); | |
57146963 | 1177 | |
e646a8f3 | 1178 | enumerator->countries = loc_country_list_ref(countries); |
35bb3a32 MT |
1179 | |
1180 | return 0; | |
1181 | } | |
1182 | ||
84a2f0c2 MT |
1183 | LOC_EXPORT struct loc_as_list* loc_database_enumerator_get_asns( |
1184 | struct loc_database_enumerator* enumerator) { | |
1185 | if (!enumerator->asns) | |
1186 | return NULL; | |
1187 | ||
1188 | return loc_as_list_ref(enumerator->asns); | |
1189 | } | |
1190 | ||
1191 | LOC_EXPORT int loc_database_enumerator_set_asns( | |
1192 | struct loc_database_enumerator* enumerator, struct loc_as_list* asns) { | |
1193 | if (enumerator->asns) | |
1194 | loc_as_list_unref(enumerator->asns); | |
1195 | ||
1196 | enumerator->asns = loc_as_list_ref(asns); | |
82910b95 MT |
1197 | |
1198 | return 0; | |
1199 | } | |
1200 | ||
9268db5a MT |
1201 | LOC_EXPORT int loc_database_enumerator_set_flag( |
1202 | struct loc_database_enumerator* enumerator, enum loc_network_flags flag) { | |
1203 | enumerator->flags |= flag; | |
1204 | ||
1205 | return 0; | |
1206 | } | |
1207 | ||
44e5ef71 MT |
1208 | LOC_EXPORT int loc_database_enumerator_set_family( |
1209 | struct loc_database_enumerator* enumerator, int family) { | |
1210 | enumerator->family = family; | |
1211 | ||
1212 | return 0; | |
1213 | } | |
1214 | ||
15f79e2d MT |
1215 | LOC_EXPORT int loc_database_enumerator_next_as( |
1216 | struct loc_database_enumerator* enumerator, struct loc_as** as) { | |
1217 | *as = NULL; | |
1218 | ||
ccc7ab4e MT |
1219 | // Do not do anything if not in AS mode |
1220 | if (enumerator->mode != LOC_DB_ENUMERATE_ASES) | |
15f79e2d | 1221 | return 0; |
ccc7ab4e | 1222 | |
d3d8ede6 | 1223 | struct loc_database* db = enumerator->db; |
d3d8ede6 | 1224 | |
18638ad2 | 1225 | while (enumerator->as_index < db->as_objects.count) { |
d3d8ede6 | 1226 | // Fetch the next AS |
15f79e2d | 1227 | int r = loc_database_fetch_as(db, as, enumerator->as_index++); |
d3d8ede6 | 1228 | if (r) |
15f79e2d | 1229 | return r; |
d3d8ede6 | 1230 | |
15f79e2d | 1231 | r = loc_as_match_string(*as, enumerator->string); |
273948cf | 1232 | if (r == 1) { |
d3d8ede6 | 1233 | DEBUG(enumerator->ctx, "AS%d (%s) matches %s\n", |
15f79e2d | 1234 | loc_as_get_number(*as), loc_as_get_name(*as), enumerator->string); |
d3d8ede6 | 1235 | |
15f79e2d | 1236 | return 0; |
d3d8ede6 MT |
1237 | } |
1238 | ||
1239 | // No match | |
15f79e2d | 1240 | loc_as_unref(*as); |
74f218f0 | 1241 | *as = NULL; |
d3d8ede6 MT |
1242 | } |
1243 | ||
1244 | // Reset the index | |
1245 | enumerator->as_index = 0; | |
1246 | ||
1247 | // We have searched through all of them | |
15f79e2d | 1248 | return 0; |
d3d8ede6 | 1249 | } |
e3f696c1 MT |
1250 | |
1251 | static int loc_database_enumerator_stack_push_node( | |
1252 | struct loc_database_enumerator* e, off_t offset, int i, int depth) { | |
1253 | // Do not add empty nodes | |
1254 | if (!offset) | |
1255 | return 0; | |
1256 | ||
1257 | // Check if there is any space left on the stack | |
1258 | if (e->network_stack_depth >= MAX_STACK_DEPTH) { | |
1259 | ERROR(e->ctx, "Maximum stack size reached: %d\n", e->network_stack_depth); | |
18638ad2 MT |
1260 | return 1; |
1261 | } | |
1262 | ||
1263 | // Check if the node is in range | |
1264 | if (offset >= (off_t)e->db->network_node_objects.count) { | |
1265 | ERROR(e->ctx, "Trying to add invalid node with offset %jd/%zu\n", | |
1266 | offset, e->db->network_node_objects.count); | |
1267 | errno = ERANGE; | |
1268 | return 1; | |
e3f696c1 MT |
1269 | } |
1270 | ||
1271 | // Increase stack size | |
1272 | int s = ++e->network_stack_depth; | |
1273 | ||
2e2325a9 | 1274 | DEBUG(e->ctx, "Added node %jd to stack (%d)\n", (intmax_t)offset, depth); |
e3f696c1 MT |
1275 | |
1276 | e->network_stack[s].offset = offset; | |
1277 | e->network_stack[s].i = i; | |
1278 | e->network_stack[s].depth = depth; | |
1279 | ||
1280 | return 0; | |
1281 | } | |
1282 | ||
964633d9 | 1283 | static int loc_database_enumerator_match_network( |
69248038 | 1284 | struct loc_database_enumerator* enumerator, struct loc_network* network) { |
964633d9 | 1285 | // If family is set, it must match |
e0e96878 MT |
1286 | if (enumerator->family && loc_network_address_family(network) != enumerator->family) { |
1287 | DEBUG(enumerator->ctx, "Filtered network %p because of family not matching\n", network); | |
964633d9 | 1288 | return 0; |
e0e96878 | 1289 | } |
69248038 | 1290 | |
098d871b MT |
1291 | // Match if no filter criteria is configured |
1292 | if (!enumerator->countries && !enumerator->asns && !enumerator->flags) | |
1293 | return 1; | |
1294 | ||
964633d9 | 1295 | // Check if the country code matches |
e0e96878 MT |
1296 | if (enumerator->countries && !loc_country_list_empty(enumerator->countries)) { |
1297 | const char* country_code = loc_network_get_country_code(network); | |
50120b99 | 1298 | |
964633d9 MT |
1299 | if (loc_country_list_contains_code(enumerator->countries, country_code)) { |
1300 | DEBUG(enumerator->ctx, "Matched network %p because of its country code\n", network); | |
e0e96878 | 1301 | return 1; |
50120b99 MT |
1302 | } |
1303 | } | |
69248038 | 1304 | |
964633d9 | 1305 | // Check if the ASN matches |
e0e96878 MT |
1306 | if (enumerator->asns && !loc_as_list_empty(enumerator->asns)) { |
1307 | uint32_t asn = loc_network_get_asn(network); | |
c1a36c94 | 1308 | |
964633d9 MT |
1309 | if (loc_as_list_contains_number(enumerator->asns, asn)) { |
1310 | DEBUG(enumerator->ctx, "Matched network %p because of its ASN\n", network); | |
e0e96878 | 1311 | return 1; |
c1a36c94 MT |
1312 | } |
1313 | } | |
69248038 | 1314 | |
964633d9 MT |
1315 | // Check if flags match |
1316 | if (enumerator->flags && loc_network_has_flag(network, enumerator->flags)) { | |
1317 | DEBUG(enumerator->ctx, "Matched network %p because of its flags\n", network); | |
69248038 | 1318 | return 1; |
e0e96878 | 1319 | } |
69248038 | 1320 | |
964633d9 | 1321 | // Not a match |
69248038 MT |
1322 | return 0; |
1323 | } | |
1324 | ||
d87fd7a3 MT |
1325 | static int __loc_database_enumerator_next_network( |
1326 | struct loc_database_enumerator* enumerator, struct loc_network** network, int filter) { | |
1327 | // Return top element from the stack | |
2113e71b | 1328 | while (1) { |
04cbd2bf | 1329 | *network = loc_network_list_pop_first(enumerator->stack); |
2113e71b MT |
1330 | |
1331 | // Stack is empty | |
1332 | if (!*network) | |
1333 | break; | |
1334 | ||
964633d9 MT |
1335 | // Return everything if filter isn't enabled, or only return matches |
1336 | if (!filter || loc_database_enumerator_match_network(enumerator, *network)) | |
1337 | return 0; | |
2113e71b | 1338 | |
964633d9 MT |
1339 | // Throw away anything that doesn't match |
1340 | loc_network_unref(*network); | |
1341 | *network = NULL; | |
2113e71b | 1342 | } |
15f79e2d | 1343 | |
15f79e2d MT |
1344 | DEBUG(enumerator->ctx, "Called with a stack of %u nodes\n", |
1345 | enumerator->network_stack_depth); | |
e3f696c1 MT |
1346 | |
1347 | // Perform DFS | |
15f79e2d MT |
1348 | while (enumerator->network_stack_depth > 0) { |
1349 | DEBUG(enumerator->ctx, "Stack depth: %u\n", enumerator->network_stack_depth); | |
e3f696c1 MT |
1350 | |
1351 | // Get object from top of the stack | |
15f79e2d | 1352 | struct loc_node_stack* node = &enumerator->network_stack[enumerator->network_stack_depth]; |
e3f696c1 | 1353 | |
18638ad2 MT |
1354 | DEBUG(enumerator->ctx, " Got node: %jd\n", node->offset); |
1355 | ||
e3f696c1 | 1356 | // Remove the node from the stack if we have already visited it |
15f79e2d MT |
1357 | if (enumerator->networks_visited[node->offset]) { |
1358 | enumerator->network_stack_depth--; | |
e3f696c1 MT |
1359 | continue; |
1360 | } | |
1361 | ||
74fb733a | 1362 | // Mark the bits on the path correctly |
d698ca09 | 1363 | loc_address_set_bit(&enumerator->network_address, |
e3f696c1 MT |
1364 | (node->depth > 0) ? node->depth - 1 : 0, node->i); |
1365 | ||
2e2325a9 | 1366 | DEBUG(enumerator->ctx, "Looking at node %jd\n", (intmax_t)node->offset); |
15f79e2d | 1367 | enumerator->networks_visited[node->offset]++; |
e3f696c1 MT |
1368 | |
1369 | // Pop node from top of the stack | |
975f280f MT |
1370 | struct loc_database_network_node_v1* n = |
1371 | (struct loc_database_network_node_v1*)loc_database_object(enumerator->db, | |
1372 | &enumerator->db->network_node_objects, sizeof(*n), node->offset); | |
18638ad2 MT |
1373 | if (!n) |
1374 | return 1; | |
e3f696c1 MT |
1375 | |
1376 | // Add edges to stack | |
d87fd7a3 | 1377 | int r = loc_database_enumerator_stack_push_node(enumerator, |
e3f696c1 | 1378 | be32toh(n->one), 1, node->depth + 1); |
e3f696c1 MT |
1379 | if (r) |
1380 | return r; | |
1381 | ||
15f79e2d | 1382 | r = loc_database_enumerator_stack_push_node(enumerator, |
e3f696c1 | 1383 | be32toh(n->zero), 0, node->depth + 1); |
e3f696c1 MT |
1384 | if (r) |
1385 | return r; | |
1386 | ||
1387 | // Check if this node is a leaf and has a network object | |
1388 | if (__loc_database_node_is_leaf(n)) { | |
1389 | off_t network_index = be32toh(n->network); | |
1390 | ||
2e2325a9 | 1391 | DEBUG(enumerator->ctx, "Node has a network at %jd\n", (intmax_t)network_index); |
e3f696c1 MT |
1392 | |
1393 | // Fetch the network object | |
15f79e2d MT |
1394 | r = loc_database_fetch_network(enumerator->db, network, |
1395 | &enumerator->network_address, node->depth, network_index); | |
e3f696c1 MT |
1396 | |
1397 | // Break on any errors | |
1398 | if (r) | |
1399 | return r; | |
1400 | ||
964633d9 MT |
1401 | // Return all networks when the filter is disabled, or check for match |
1402 | if (!filter || loc_database_enumerator_match_network(enumerator, *network)) | |
d87fd7a3 MT |
1403 | return 0; |
1404 | ||
964633d9 MT |
1405 | // Does not seem to be a match, so we cleanup and move on |
1406 | loc_network_unref(*network); | |
1407 | *network = NULL; | |
e3f696c1 MT |
1408 | } |
1409 | } | |
1410 | ||
1411 | // Reached the end of the search | |
d87fd7a3 MT |
1412 | return 0; |
1413 | } | |
fe483cdc | 1414 | |
d87fd7a3 MT |
1415 | static int __loc_database_enumerator_next_network_flattened( |
1416 | struct loc_database_enumerator* enumerator, struct loc_network** network) { | |
1417 | // Fetch the next network | |
1418 | int r = __loc_database_enumerator_next_network(enumerator, network, 1); | |
1419 | if (r) | |
1420 | return r; | |
e3f696c1 | 1421 | |
d87fd7a3 MT |
1422 | // End if we could not read another network |
1423 | if (!*network) | |
1424 | return 0; | |
1425 | ||
1426 | struct loc_network* subnet = NULL; | |
d87fd7a3 MT |
1427 | |
1428 | // Create a list with all subnets | |
065b3496 MT |
1429 | if (!enumerator->subnets) { |
1430 | r = loc_network_list_new(enumerator->ctx, &enumerator->subnets); | |
1431 | if (r) | |
1432 | return r; | |
1433 | } | |
d87fd7a3 MT |
1434 | |
1435 | // Search all subnets from the database | |
1436 | while (1) { | |
1437 | // Fetch the next network in line | |
1438 | r = __loc_database_enumerator_next_network(enumerator, &subnet, 0); | |
ed0f53df MT |
1439 | if (r) { |
1440 | loc_network_unref(subnet); | |
065b3496 | 1441 | loc_network_list_clear(enumerator->subnets); |
ed0f53df MT |
1442 | |
1443 | return r; | |
1444 | } | |
d87fd7a3 MT |
1445 | |
1446 | // End if we did not receive another subnet | |
1447 | if (!subnet) | |
1448 | break; | |
1449 | ||
1450 | // Collect all subnets in a list | |
1451 | if (loc_network_is_subnet(*network, subnet)) { | |
065b3496 | 1452 | r = loc_network_list_push(enumerator->subnets, subnet); |
ed0f53df MT |
1453 | if (r) { |
1454 | loc_network_unref(subnet); | |
065b3496 | 1455 | loc_network_list_clear(enumerator->subnets); |
ed0f53df MT |
1456 | |
1457 | return r; | |
1458 | } | |
d87fd7a3 MT |
1459 | |
1460 | loc_network_unref(subnet); | |
1461 | continue; | |
1462 | } | |
1463 | ||
1464 | // If this is not a subnet, we push it back onto the stack and break | |
1465 | r = loc_network_list_push(enumerator->stack, subnet); | |
ed0f53df MT |
1466 | if (r) { |
1467 | loc_network_unref(subnet); | |
065b3496 | 1468 | loc_network_list_clear(enumerator->subnets); |
ed0f53df MT |
1469 | |
1470 | return r; | |
1471 | } | |
d87fd7a3 MT |
1472 | |
1473 | loc_network_unref(subnet); | |
1474 | break; | |
1475 | } | |
1476 | ||
065b3496 MT |
1477 | DEBUG(enumerator->ctx, "Found %zu subnet(s)\n", |
1478 | loc_network_list_size(enumerator->subnets)); | |
d87fd7a3 MT |
1479 | |
1480 | // We can abort here if the network has no subnets | |
065b3496 MT |
1481 | if (loc_network_list_empty(enumerator->subnets)) { |
1482 | loc_network_list_clear(enumerator->subnets); | |
d87fd7a3 MT |
1483 | |
1484 | return 0; | |
1485 | } | |
1486 | ||
1487 | // If the network has any subnets, we will break it into smaller parts | |
1488 | // without the subnets. | |
065b3496 | 1489 | struct loc_network_list* excluded = loc_network_exclude_list(*network, enumerator->subnets); |
ed0f53df | 1490 | if (!excluded) { |
065b3496 | 1491 | loc_network_list_clear(enumerator->subnets); |
725718e1 | 1492 | return 1; |
ed0f53df MT |
1493 | } |
1494 | ||
5dacb45a | 1495 | // Merge subnets onto the stack |
065b3496 | 1496 | r = loc_network_list_merge(enumerator->stack, enumerator->subnets); |
ed0f53df | 1497 | if (r) { |
065b3496 | 1498 | loc_network_list_clear(enumerator->subnets); |
ed0f53df MT |
1499 | loc_network_list_unref(excluded); |
1500 | ||
1501 | return r; | |
d87fd7a3 MT |
1502 | } |
1503 | ||
5dacb45a MT |
1504 | // Push excluded list onto the stack |
1505 | r = loc_network_list_merge(enumerator->stack, excluded); | |
1506 | if (r) { | |
065b3496 | 1507 | loc_network_list_clear(enumerator->subnets); |
5dacb45a | 1508 | loc_network_list_unref(excluded); |
d87fd7a3 | 1509 | |
5dacb45a MT |
1510 | return r; |
1511 | } | |
d87fd7a3 | 1512 | |
065b3496 | 1513 | loc_network_list_clear(enumerator->subnets); |
5dacb45a MT |
1514 | loc_network_list_unref(excluded); |
1515 | ||
6bd9cd76 | 1516 | // Drop the network and restart the whole process again to pick the next network |
5dacb45a | 1517 | loc_network_unref(*network); |
d87fd7a3 | 1518 | |
6bd9cd76 | 1519 | return __loc_database_enumerator_next_network_flattened(enumerator, network); |
d87fd7a3 MT |
1520 | } |
1521 | ||
8c37d8a7 MT |
1522 | /* |
1523 | This function finds all bogons (i.e. gaps) between the input networks | |
1524 | */ | |
8c37d8a7 MT |
1525 | static int __loc_database_enumerator_next_bogon( |
1526 | struct loc_database_enumerator* enumerator, struct loc_network** bogon) { | |
1527 | int r; | |
1528 | ||
1529 | // Return top element from the stack | |
1530 | while (1) { | |
1531 | *bogon = loc_network_list_pop_first(enumerator->stack); | |
1532 | ||
1533 | // Stack is empty | |
1534 | if (!*bogon) | |
1535 | break; | |
1536 | ||
1537 | // Return result | |
1538 | return 0; | |
1539 | } | |
1540 | ||
1541 | struct loc_network* network = NULL; | |
9306c68d MT |
1542 | struct in6_addr* gap_start = NULL; |
1543 | struct in6_addr gap_end = IN6ADDR_ANY_INIT; | |
8c37d8a7 MT |
1544 | |
1545 | while (1) { | |
1546 | r = __loc_database_enumerator_next_network(enumerator, &network, 1); | |
1547 | if (r) | |
9306c68d | 1548 | return r; |
8c37d8a7 | 1549 | |
9306c68d | 1550 | // We have read the last network |
8c37d8a7 | 1551 | if (!network) |
9306c68d MT |
1552 | goto FINISH; |
1553 | ||
5a01e11e MT |
1554 | const char* country_code = loc_network_get_country_code(network); |
1555 | ||
1556 | /* | |
1557 | Skip anything that does not have a country code | |
1558 | ||
1559 | Even if a network is part of the routing table, and the database provides | |
1560 | an ASN, this does not mean that this is a legitimate announcement. | |
1561 | */ | |
1562 | if (country_code && !*country_code) { | |
1563 | loc_network_unref(network); | |
1564 | continue; | |
1565 | } | |
1566 | ||
9306c68d MT |
1567 | // Determine the network family |
1568 | int family = loc_network_address_family(network); | |
1569 | ||
1570 | switch (family) { | |
1571 | case AF_INET6: | |
1572 | gap_start = &enumerator->gap6_start; | |
1573 | break; | |
1574 | ||
1575 | case AF_INET: | |
1576 | gap_start = &enumerator->gap4_start; | |
1577 | break; | |
1578 | ||
1579 | default: | |
1580 | ERROR(enumerator->ctx, "Unsupported network family %d\n", family); | |
1581 | errno = ENOTSUP; | |
1582 | return 1; | |
1583 | } | |
1584 | ||
8649c654 MT |
1585 | const struct in6_addr* first_address = loc_network_get_first_address(network); |
1586 | const struct in6_addr* last_address = loc_network_get_last_address(network); | |
1587 | ||
1588 | // Skip if this network is a subnet of a former one | |
1589 | if (loc_address_cmp(gap_start, last_address) >= 0) { | |
1590 | loc_network_unref(network); | |
1591 | continue; | |
1592 | } | |
1593 | ||
9306c68d | 1594 | // Search where the gap could end |
8649c654 | 1595 | gap_end = *first_address; |
5b72642c | 1596 | loc_address_decrement(&gap_end); |
8c37d8a7 | 1597 | |
9306c68d | 1598 | // There is a gap |
c833e45e | 1599 | if (loc_address_cmp(gap_start, &gap_end) <= 0) { |
9306c68d MT |
1600 | r = loc_network_list_summarize(enumerator->ctx, |
1601 | gap_start, &gap_end, &enumerator->stack); | |
8c37d8a7 MT |
1602 | if (r) { |
1603 | loc_network_unref(network); | |
9306c68d | 1604 | return r; |
8c37d8a7 MT |
1605 | } |
1606 | } | |
1607 | ||
9306c68d | 1608 | // The gap now starts after this network |
8649c654 | 1609 | *gap_start = *last_address; |
5b72642c | 1610 | loc_address_increment(gap_start); |
9306c68d | 1611 | |
8c37d8a7 MT |
1612 | loc_network_unref(network); |
1613 | ||
1614 | // Try to return something | |
1615 | *bogon = loc_network_list_pop_first(enumerator->stack); | |
1616 | if (*bogon) | |
1617 | break; | |
1618 | } | |
1619 | ||
9306c68d MT |
1620 | return 0; |
1621 | ||
1622 | FINISH: | |
1623 | ||
1624 | if (!loc_address_all_zeroes(&enumerator->gap6_start)) { | |
1625 | r = loc_address_reset_last(&gap_end, AF_INET6); | |
1626 | if (r) | |
1627 | return r; | |
1628 | ||
c833e45e | 1629 | if (loc_address_cmp(&enumerator->gap6_start, &gap_end) <= 0) { |
9306c68d MT |
1630 | r = loc_network_list_summarize(enumerator->ctx, |
1631 | &enumerator->gap6_start, &gap_end, &enumerator->stack); | |
1632 | if (r) | |
1633 | return r; | |
1634 | } | |
c0b1f64f MT |
1635 | |
1636 | // Reset start | |
1637 | loc_address_reset(&enumerator->gap6_start, AF_INET6); | |
9306c68d MT |
1638 | } |
1639 | ||
1640 | if (!loc_address_all_zeroes(&enumerator->gap4_start)) { | |
1641 | r = loc_address_reset_last(&gap_end, AF_INET); | |
1642 | if (r) | |
1643 | return r; | |
1644 | ||
c833e45e | 1645 | if (loc_address_cmp(&enumerator->gap4_start, &gap_end) <= 0) { |
9306c68d MT |
1646 | r = loc_network_list_summarize(enumerator->ctx, |
1647 | &enumerator->gap4_start, &gap_end, &enumerator->stack); | |
1648 | if (r) | |
1649 | return r; | |
1650 | } | |
c0b1f64f MT |
1651 | |
1652 | // Reset start | |
1653 | loc_address_reset(&enumerator->gap4_start, AF_INET); | |
9306c68d MT |
1654 | } |
1655 | ||
1656 | // Try to return something | |
1657 | *bogon = loc_network_list_pop_first(enumerator->stack); | |
1658 | ||
1659 | return 0; | |
8c37d8a7 MT |
1660 | } |
1661 | ||
d87fd7a3 MT |
1662 | LOC_EXPORT int loc_database_enumerator_next_network( |
1663 | struct loc_database_enumerator* enumerator, struct loc_network** network) { | |
8c37d8a7 MT |
1664 | switch (enumerator->mode) { |
1665 | case LOC_DB_ENUMERATE_NETWORKS: | |
1666 | // Flatten output? | |
1667 | if (enumerator->flatten) | |
1668 | return __loc_database_enumerator_next_network_flattened(enumerator, network); | |
d87fd7a3 | 1669 | |
8c37d8a7 MT |
1670 | return __loc_database_enumerator_next_network(enumerator, network, 1); |
1671 | ||
1672 | case LOC_DB_ENUMERATE_BOGONS: | |
1673 | return __loc_database_enumerator_next_bogon(enumerator, network); | |
d87fd7a3 | 1674 | |
8c37d8a7 MT |
1675 | default: |
1676 | return 0; | |
1677 | } | |
e3f696c1 | 1678 | } |
fa9a3663 MT |
1679 | |
1680 | LOC_EXPORT int loc_database_enumerator_next_country( | |
1681 | struct loc_database_enumerator* enumerator, struct loc_country** country) { | |
1682 | *country = NULL; | |
1683 | ||
1684 | // Do not do anything if not in country mode | |
1685 | if (enumerator->mode != LOC_DB_ENUMERATE_COUNTRIES) | |
1686 | return 0; | |
1687 | ||
1688 | struct loc_database* db = enumerator->db; | |
1689 | ||
18638ad2 | 1690 | while (enumerator->country_index < db->country_objects.count) { |
fa9a3663 MT |
1691 | // Fetch the next country |
1692 | int r = loc_database_fetch_country(db, country, enumerator->country_index++); | |
1693 | if (r) | |
1694 | return r; | |
1695 | ||
1696 | // We do not filter here, so it always is a match | |
1697 | return 0; | |
1698 | } | |
1699 | ||
1700 | // Reset the index | |
1701 | enumerator->country_index = 0; | |
1702 | ||
1703 | // We have searched through all of them | |
1704 | return 0; | |
1705 | } |