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c182393f 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 | ||
726f9984 | 17 | #include <assert.h> |
c182393f MT |
18 | #include <errno.h> |
19 | #include <stdio.h> | |
20 | #include <stdlib.h> | |
21 | #include <string.h> | |
438db08c | 22 | #include <sys/queue.h> |
c182393f MT |
23 | #include <time.h> |
24 | ||
42f3ccd7 MT |
25 | #ifdef HAVE_ENDIAN_H |
26 | # include <endian.h> | |
27 | #endif | |
28 | ||
726f9984 MT |
29 | #include <openssl/bio.h> |
30 | #include <openssl/err.h> | |
31 | #include <openssl/evp.h> | |
32 | #include <openssl/pem.h> | |
33 | ||
c12a1385 MT |
34 | #include <libloc/libloc.h> |
35 | #include <libloc/as.h> | |
233311e8 | 36 | #include <libloc/as-list.h> |
c12a1385 MT |
37 | #include <libloc/compat.h> |
38 | #include <libloc/country.h> | |
3df5f70a | 39 | #include <libloc/country-list.h> |
c12a1385 MT |
40 | #include <libloc/database.h> |
41 | #include <libloc/format.h> | |
42 | #include <libloc/network.h> | |
43 | #include <libloc/private.h> | |
44 | #include <libloc/writer.h> | |
c182393f | 45 | |
c182393f MT |
46 | struct loc_writer { |
47 | struct loc_ctx* ctx; | |
48 | int refcount; | |
49 | ||
50 | struct loc_stringpool* pool; | |
51 | off_t vendor; | |
52 | off_t description; | |
4bf49d00 | 53 | off_t license; |
c182393f | 54 | |
5ce881d4 MT |
55 | // Private keys to sign any databases |
56 | EVP_PKEY* private_key1; | |
57 | EVP_PKEY* private_key2; | |
58 | ||
59 | // Signatures | |
60 | char signature1[LOC_SIGNATURE_MAX_LENGTH]; | |
61 | size_t signature1_length; | |
62 | char signature2[LOC_SIGNATURE_MAX_LENGTH]; | |
63 | size_t signature2_length; | |
726f9984 | 64 | |
3b5f4af2 | 65 | struct loc_network_tree* networks; |
233311e8 MT |
66 | |
67 | struct loc_as_list* as_list; | |
3df5f70a | 68 | struct loc_country_list* country_list; |
c182393f MT |
69 | }; |
70 | ||
5ce881d4 | 71 | static int parse_private_key(struct loc_writer* writer, EVP_PKEY** private_key, FILE* f) { |
726f9984 | 72 | // Free any previously loaded keys |
5ce881d4 MT |
73 | if (*private_key) |
74 | EVP_PKEY_free(*private_key); | |
726f9984 MT |
75 | |
76 | // Read the key | |
5ce881d4 | 77 | *private_key = PEM_read_PrivateKey(f, NULL, NULL, NULL); |
726f9984 MT |
78 | |
79 | // Log any errors | |
5ce881d4 | 80 | if (!*private_key) { |
726f9984 MT |
81 | char* error = ERR_error_string(ERR_get_error(), NULL); |
82 | ERROR(writer->ctx, "Could not parse private key: %s\n", error); | |
83 | ||
84 | return -1; | |
85 | } | |
86 | ||
87 | return 0; | |
88 | } | |
89 | ||
5ce881d4 MT |
90 | LOC_EXPORT int loc_writer_new(struct loc_ctx* ctx, struct loc_writer** writer, |
91 | FILE* fkey1, FILE* fkey2) { | |
c182393f MT |
92 | struct loc_writer* w = calloc(1, sizeof(*w)); |
93 | if (!w) | |
198e382c | 94 | return 1; |
c182393f MT |
95 | |
96 | w->ctx = loc_ref(ctx); | |
97 | w->refcount = 1; | |
98 | ||
0e974d4b | 99 | int r = loc_stringpool_new(ctx, &w->pool); |
c182393f MT |
100 | if (r) { |
101 | loc_writer_unref(w); | |
102 | return r; | |
103 | } | |
104 | ||
3b5f4af2 MT |
105 | // Initialize the network tree |
106 | r = loc_network_tree_new(ctx, &w->networks); | |
107 | if (r) { | |
108 | loc_writer_unref(w); | |
109 | return r; | |
110 | } | |
111 | ||
233311e8 MT |
112 | // Initialize AS list |
113 | r = loc_as_list_new(ctx, &w->as_list); | |
114 | if (r) { | |
115 | loc_writer_unref(w); | |
116 | return r; | |
117 | } | |
118 | ||
d57cf1fc MT |
119 | // Initialize countries list |
120 | r = loc_country_list_new(ctx, &w->country_list); | |
121 | if (r) { | |
122 | loc_writer_unref(w); | |
123 | return r; | |
124 | } | |
125 | ||
5ce881d4 MT |
126 | // Load the private keys to sign databases |
127 | if (fkey1) { | |
128 | r = parse_private_key(w, &w->private_key1, fkey1); | |
129 | if (r) { | |
130 | loc_writer_unref(w); | |
131 | return r; | |
132 | } | |
133 | } | |
134 | ||
135 | if (fkey2) { | |
136 | r = parse_private_key(w, &w->private_key2, fkey2); | |
726f9984 MT |
137 | if (r) { |
138 | loc_writer_unref(w); | |
139 | return r; | |
140 | } | |
141 | } | |
142 | ||
c182393f MT |
143 | *writer = w; |
144 | return 0; | |
145 | } | |
146 | ||
147 | LOC_EXPORT struct loc_writer* loc_writer_ref(struct loc_writer* writer) { | |
148 | writer->refcount++; | |
149 | ||
150 | return writer; | |
151 | } | |
152 | ||
153 | static void loc_writer_free(struct loc_writer* writer) { | |
154 | DEBUG(writer->ctx, "Releasing writer at %p\n", writer); | |
155 | ||
5ce881d4 MT |
156 | // Free private keys |
157 | if (writer->private_key1) | |
158 | EVP_PKEY_free(writer->private_key1); | |
159 | if (writer->private_key2) | |
160 | EVP_PKEY_free(writer->private_key2); | |
726f9984 | 161 | |
c182393f | 162 | // Unref all AS |
233311e8 MT |
163 | if (writer->as_list) |
164 | loc_as_list_unref(writer->as_list); | |
c182393f | 165 | |
d89a7d62 | 166 | // Unref all countries |
3df5f70a MT |
167 | if (writer->country_list) |
168 | loc_country_list_unref(writer->country_list); | |
d89a7d62 | 169 | |
3b5f4af2 MT |
170 | // Release network tree |
171 | if (writer->networks) | |
172 | loc_network_tree_unref(writer->networks); | |
173 | ||
c182393f MT |
174 | // Unref the string pool |
175 | loc_stringpool_unref(writer->pool); | |
176 | ||
177 | loc_unref(writer->ctx); | |
178 | free(writer); | |
179 | } | |
180 | ||
181 | LOC_EXPORT struct loc_writer* loc_writer_unref(struct loc_writer* writer) { | |
182 | if (--writer->refcount > 0) | |
183 | return writer; | |
184 | ||
185 | loc_writer_free(writer); | |
186 | ||
187 | return NULL; | |
188 | } | |
189 | ||
190 | LOC_EXPORT const char* loc_writer_get_vendor(struct loc_writer* writer) { | |
191 | return loc_stringpool_get(writer->pool, writer->vendor); | |
192 | } | |
193 | ||
194 | LOC_EXPORT int loc_writer_set_vendor(struct loc_writer* writer, const char* vendor) { | |
195 | // Add the string to the string pool | |
196 | off_t offset = loc_stringpool_add(writer->pool, vendor); | |
197 | if (offset < 0) | |
198 | return offset; | |
199 | ||
200 | writer->vendor = offset; | |
201 | return 0; | |
202 | } | |
203 | ||
204 | LOC_EXPORT const char* loc_writer_get_description(struct loc_writer* writer) { | |
205 | return loc_stringpool_get(writer->pool, writer->description); | |
206 | } | |
207 | ||
208 | LOC_EXPORT int loc_writer_set_description(struct loc_writer* writer, const char* description) { | |
209 | // Add the string to the string pool | |
210 | off_t offset = loc_stringpool_add(writer->pool, description); | |
211 | if (offset < 0) | |
212 | return offset; | |
213 | ||
214 | writer->description = offset; | |
215 | return 0; | |
216 | } | |
217 | ||
4bf49d00 MT |
218 | LOC_EXPORT const char* loc_writer_get_license(struct loc_writer* writer) { |
219 | return loc_stringpool_get(writer->pool, writer->license); | |
220 | } | |
221 | ||
222 | LOC_EXPORT int loc_writer_set_license(struct loc_writer* writer, const char* license) { | |
223 | // Add the string to the string pool | |
224 | off_t offset = loc_stringpool_add(writer->pool, license); | |
225 | if (offset < 0) | |
226 | return offset; | |
227 | ||
228 | writer->license = offset; | |
229 | return 0; | |
230 | } | |
231 | ||
c182393f | 232 | LOC_EXPORT int loc_writer_add_as(struct loc_writer* writer, struct loc_as** as, uint32_t number) { |
233311e8 | 233 | // Create a new AS object |
29bd8211 | 234 | int r = loc_as_new(writer->ctx, as, number); |
c182393f MT |
235 | if (r) |
236 | return r; | |
237 | ||
233311e8 MT |
238 | // Append it to the list |
239 | return loc_as_list_append(writer->as_list, *as); | |
c182393f MT |
240 | } |
241 | ||
3b5f4af2 MT |
242 | LOC_EXPORT int loc_writer_add_network(struct loc_writer* writer, struct loc_network** network, const char* string) { |
243 | int r; | |
244 | ||
245 | // Create a new network object | |
246 | r = loc_network_new_from_string(writer->ctx, network, string); | |
247 | if (r) | |
248 | return r; | |
249 | ||
250 | // Add it to the local tree | |
251 | return loc_network_tree_add_network(writer->networks, *network); | |
252 | } | |
253 | ||
ec684c1a | 254 | LOC_EXPORT int loc_writer_add_country(struct loc_writer* writer, struct loc_country** country, const char* country_code) { |
3df5f70a | 255 | // Allocate a new country |
ec684c1a MT |
256 | int r = loc_country_new(writer->ctx, country, country_code); |
257 | if (r) | |
258 | return r; | |
259 | ||
3df5f70a MT |
260 | // Append it to the list |
261 | return loc_country_list_append(writer->country_list, *country); | |
ec684c1a MT |
262 | } |
263 | ||
22c7b98b MT |
264 | static void make_magic(struct loc_writer* writer, struct loc_database_magic* magic, |
265 | enum loc_database_version version) { | |
c182393f MT |
266 | // Copy magic bytes |
267 | for (unsigned int i = 0; i < strlen(LOC_DATABASE_MAGIC); i++) | |
268 | magic->magic[i] = LOC_DATABASE_MAGIC[i]; | |
269 | ||
270 | // Set version | |
22c7b98b | 271 | magic->version = version; |
c182393f MT |
272 | } |
273 | ||
274 | static void align_page_boundary(off_t* offset, FILE* f) { | |
275 | // Move to next page boundary | |
276 | while (*offset % LOC_DATABASE_PAGE_SIZE > 0) | |
277 | *offset += fwrite("", 1, 1, f); | |
278 | } | |
279 | ||
280 | static int loc_database_write_pool(struct loc_writer* writer, | |
b904896a | 281 | struct loc_database_header_v1* header, off_t* offset, FILE* f) { |
c182393f | 282 | // Save the offset of the pool section |
5c57de03 | 283 | DEBUG(writer->ctx, "Pool starts at %jd bytes\n", (intmax_t)*offset); |
0676cd80 | 284 | header->pool_offset = htobe32(*offset); |
c182393f MT |
285 | |
286 | // Write the pool | |
287 | size_t pool_length = loc_stringpool_write(writer->pool, f); | |
288 | *offset += pool_length; | |
289 | ||
290 | DEBUG(writer->ctx, "Pool has a length of %zu bytes\n", pool_length); | |
0676cd80 | 291 | header->pool_length = htobe32(pool_length); |
c182393f MT |
292 | |
293 | return 0; | |
294 | } | |
295 | ||
296 | static int loc_database_write_as_section(struct loc_writer* writer, | |
b904896a | 297 | struct loc_database_header_v1* header, off_t* offset, FILE* f) { |
5c57de03 | 298 | DEBUG(writer->ctx, "AS section starts at %jd bytes\n", (intmax_t)*offset); |
0676cd80 | 299 | header->as_offset = htobe32(*offset); |
c182393f | 300 | |
233311e8 MT |
301 | // Sort the AS list first |
302 | loc_as_list_sort(writer->as_list); | |
303 | ||
304 | const size_t as_count = loc_as_list_size(writer->as_list); | |
305 | ||
306 | struct loc_database_as_v1 block; | |
307 | size_t block_length = 0; | |
308 | ||
309 | for (unsigned int i = 0; i < as_count; i++) { | |
310 | struct loc_as* as = loc_as_list_get(writer->as_list, i); | |
311 | if (!as) | |
312 | return 1; | |
c182393f | 313 | |
c182393f | 314 | // Convert AS into database format |
233311e8 | 315 | loc_as_to_database_v1(as, writer->pool, &block); |
c182393f MT |
316 | |
317 | // Write to disk | |
233311e8 MT |
318 | *offset += fwrite(&block, 1, sizeof(block), f); |
319 | block_length += sizeof(block); | |
320 | ||
321 | // Unref AS | |
322 | loc_as_unref(as); | |
c182393f MT |
323 | } |
324 | ||
233311e8 MT |
325 | DEBUG(writer->ctx, "AS section has a length of %zu bytes\n", block_length); |
326 | header->as_length = htobe32(block_length); | |
c182393f | 327 | |
fda89f24 MT |
328 | align_page_boundary(offset, f); |
329 | ||
c182393f MT |
330 | return 0; |
331 | } | |
332 | ||
438db08c MT |
333 | struct node { |
334 | TAILQ_ENTRY(node) nodes; | |
f3e02bc5 | 335 | |
438db08c | 336 | struct loc_network_tree_node* node; |
f3e02bc5 | 337 | |
438db08c MT |
338 | // Indices of the child nodes |
339 | uint32_t index_zero; | |
340 | uint32_t index_one; | |
341 | }; | |
f3e02bc5 | 342 | |
438db08c MT |
343 | static struct node* make_node(struct loc_network_tree_node* node) { |
344 | struct node* n = malloc(sizeof(*n)); | |
345 | if (!n) | |
346 | return NULL; | |
f3e02bc5 | 347 | |
438db08c MT |
348 | n->node = loc_network_tree_node_ref(node); |
349 | n->index_zero = n->index_one = 0; | |
350 | ||
351 | return n; | |
352 | } | |
353 | ||
354 | static void free_node(struct node* node) { | |
355 | loc_network_tree_node_unref(node->node); | |
356 | ||
357 | free(node); | |
358 | } | |
359 | ||
360 | struct network { | |
361 | TAILQ_ENTRY(network) networks; | |
362 | ||
363 | struct loc_network* network; | |
364 | }; | |
365 | ||
366 | static struct network* make_network(struct loc_network* network) { | |
367 | struct network* n = malloc(sizeof(*n)); | |
368 | if (!n) | |
369 | return NULL; | |
370 | ||
371 | n->network = loc_network_ref(network); | |
372 | ||
373 | return n; | |
f3e02bc5 MT |
374 | } |
375 | ||
438db08c MT |
376 | static void free_network(struct network* network) { |
377 | loc_network_unref(network->network); | |
378 | ||
379 | free(network); | |
380 | } | |
381 | ||
382 | static int loc_database_write_networks(struct loc_writer* writer, | |
b904896a | 383 | struct loc_database_header_v1* header, off_t* offset, FILE* f) { |
438db08c | 384 | // Write the network tree |
5c57de03 | 385 | DEBUG(writer->ctx, "Network tree starts at %jd bytes\n", (intmax_t)*offset); |
438db08c | 386 | header->network_tree_offset = htobe32(*offset); |
f3e02bc5 | 387 | |
438db08c MT |
388 | size_t network_tree_length = 0; |
389 | size_t network_data_length = 0; | |
f3e02bc5 | 390 | |
438db08c MT |
391 | struct node* node; |
392 | struct node* child_node; | |
393 | ||
394 | uint32_t index = 0; | |
395 | uint32_t network_index = 0; | |
396 | ||
b904896a MT |
397 | struct loc_database_network_v1 db_network; |
398 | struct loc_database_network_node_v1 db_node; | |
438db08c MT |
399 | |
400 | // Initialize queue for nodes | |
401 | TAILQ_HEAD(node_t, node) nodes; | |
402 | TAILQ_INIT(&nodes); | |
403 | ||
404 | // Initialize queue for networks | |
405 | TAILQ_HEAD(network_t, network) networks; | |
406 | TAILQ_INIT(&networks); | |
407 | ||
408 | // Add root | |
409 | struct loc_network_tree_node* root = loc_network_tree_get_root(writer->networks); | |
410 | node = make_node(root); | |
d66bfbaa MT |
411 | if (!node) |
412 | return 1; | |
438db08c MT |
413 | |
414 | TAILQ_INSERT_TAIL(&nodes, node, nodes); | |
415 | ||
416 | while (!TAILQ_EMPTY(&nodes)) { | |
417 | // Pop first node in list | |
418 | node = TAILQ_FIRST(&nodes); | |
419 | TAILQ_REMOVE(&nodes, node, nodes); | |
420 | ||
421 | DEBUG(writer->ctx, "Processing node %p\n", node); | |
422 | ||
423 | // Get child nodes | |
424 | struct loc_network_tree_node* node_zero = loc_network_tree_node_get(node->node, 0); | |
425 | if (node_zero) { | |
426 | node->index_zero = ++index; | |
427 | ||
428 | child_node = make_node(node_zero); | |
429 | loc_network_tree_node_unref(node_zero); | |
430 | ||
431 | TAILQ_INSERT_TAIL(&nodes, child_node, nodes); | |
432 | } | |
433 | ||
434 | struct loc_network_tree_node* node_one = loc_network_tree_node_get(node->node, 1); | |
435 | if (node_one) { | |
436 | node->index_one = ++index; | |
437 | ||
438 | child_node = make_node(node_one); | |
439 | loc_network_tree_node_unref(node_one); | |
440 | ||
441 | TAILQ_INSERT_TAIL(&nodes, child_node, nodes); | |
442 | } | |
443 | ||
444 | // Prepare what we are writing to disk | |
39a55353 MT |
445 | db_node.zero = htobe32(node->index_zero); |
446 | db_node.one = htobe32(node->index_one); | |
447 | ||
438db08c MT |
448 | if (loc_network_tree_node_is_leaf(node->node)) { |
449 | struct loc_network* network = loc_network_tree_node_get_network(node->node); | |
450 | ||
451 | // Append network to be written out later | |
452 | struct network* nw = make_network(network); | |
d66bfbaa MT |
453 | if (!nw) { |
454 | free_node(node); | |
455 | return 1; | |
456 | } | |
438db08c MT |
457 | TAILQ_INSERT_TAIL(&networks, nw, networks); |
458 | ||
39a55353 | 459 | db_node.network = htobe32(network_index++); |
438db08c MT |
460 | loc_network_unref(network); |
461 | } else { | |
39a55353 | 462 | db_node.network = htobe32(0xffffffff); |
438db08c MT |
463 | } |
464 | ||
465 | // Write the current node | |
466 | DEBUG(writer->ctx, "Writing node %p (0 = %d, 1 = %d)\n", | |
467 | node, node->index_zero, node->index_one); | |
468 | ||
469 | *offset += fwrite(&db_node, 1, sizeof(db_node), f); | |
470 | network_tree_length += sizeof(db_node); | |
471 | ||
472 | free_node(node); | |
473 | } | |
474 | ||
475 | loc_network_tree_node_unref(root); | |
476 | ||
477 | header->network_tree_length = htobe32(network_tree_length); | |
478 | ||
479 | align_page_boundary(offset, f); | |
480 | ||
5c57de03 | 481 | DEBUG(writer->ctx, "Networks data section starts at %jd bytes\n", (intmax_t)*offset); |
438db08c MT |
482 | header->network_data_offset = htobe32(*offset); |
483 | ||
484 | // We have now written the entire tree and have all networks | |
485 | // in a queue in order as they are indexed | |
486 | while (!TAILQ_EMPTY(&networks)) { | |
487 | struct network* nw = TAILQ_FIRST(&networks); | |
488 | TAILQ_REMOVE(&networks, nw, networks); | |
489 | ||
490 | // Prepare what we are writing to disk | |
b904896a | 491 | int r = loc_network_to_database_v1(nw->network, &db_network); |
438db08c MT |
492 | if (r) |
493 | return r; | |
494 | ||
495 | *offset += fwrite(&db_network, 1, sizeof(db_network), f); | |
496 | network_data_length += sizeof(db_network); | |
497 | ||
498 | free_network(nw); | |
499 | } | |
f3e02bc5 | 500 | |
438db08c | 501 | header->network_data_length = htobe32(network_data_length); |
f3e02bc5 | 502 | |
fda89f24 MT |
503 | align_page_boundary(offset, f); |
504 | ||
f3e02bc5 MT |
505 | return 0; |
506 | } | |
507 | ||
ec684c1a | 508 | static int loc_database_write_countries(struct loc_writer* writer, |
b904896a | 509 | struct loc_database_header_v1* header, off_t* offset, FILE* f) { |
2e2325a9 | 510 | DEBUG(writer->ctx, "Countries section starts at %jd bytes\n", (intmax_t)*offset); |
ec684c1a MT |
511 | header->countries_offset = htobe32(*offset); |
512 | ||
3df5f70a MT |
513 | const size_t countries_count = loc_country_list_size(writer->country_list); |
514 | ||
515 | struct loc_database_country_v1 block; | |
516 | size_t block_length = 0; | |
517 | ||
518 | for (unsigned int i = 0; i < countries_count; i++) { | |
519 | struct loc_country* country = loc_country_list_get(writer->country_list, i); | |
ec684c1a | 520 | |
ec684c1a | 521 | // Convert country into database format |
3df5f70a | 522 | loc_country_to_database_v1(country, writer->pool, &block); |
ec684c1a MT |
523 | |
524 | // Write to disk | |
3df5f70a MT |
525 | *offset += fwrite(&block, 1, sizeof(block), f); |
526 | block_length += sizeof(block); | |
ec684c1a MT |
527 | } |
528 | ||
3df5f70a MT |
529 | DEBUG(writer->ctx, "Countries section has a length of %zu bytes\n", block_length); |
530 | header->countries_length = htobe32(block_length); | |
ec684c1a MT |
531 | |
532 | align_page_boundary(offset, f); | |
533 | ||
534 | return 0; | |
535 | } | |
536 | ||
726f9984 | 537 | static int loc_writer_create_signature(struct loc_writer* writer, |
5ce881d4 MT |
538 | struct loc_database_header_v1* header, FILE* f, EVP_PKEY* private_key, |
539 | char* signature, size_t* length) { | |
c7db968a | 540 | DEBUG(writer->ctx, "Creating signature...\n"); |
726f9984 MT |
541 | |
542 | // Read file from the beginning | |
543 | rewind(f); | |
544 | ||
545 | // Create a new context for signing | |
546 | EVP_MD_CTX* mdctx = EVP_MD_CTX_new(); | |
547 | ||
548 | // Initialise the context | |
5ce881d4 | 549 | int r = EVP_DigestSignInit(mdctx, NULL, NULL, NULL, private_key); |
726f9984 MT |
550 | if (r != 1) { |
551 | ERROR(writer->ctx, "%s\n", ERR_error_string(ERR_get_error(), NULL)); | |
552 | goto END; | |
553 | } | |
554 | ||
555 | // Read magic | |
556 | struct loc_database_magic magic; | |
557 | fread(&magic, 1, sizeof(magic), f); | |
558 | ||
a0cff45d MT |
559 | hexdump(writer->ctx, &magic, sizeof(magic)); |
560 | ||
726f9984 MT |
561 | // Feed magic into the signature |
562 | r = EVP_DigestSignUpdate(mdctx, &magic, sizeof(magic)); | |
563 | if (r != 1) { | |
564 | ERROR(writer->ctx, "%s\n", ERR_error_string(ERR_get_error(), NULL)); | |
565 | goto END; | |
566 | } | |
567 | ||
a0cff45d MT |
568 | hexdump(writer->ctx, header, sizeof(*header)); |
569 | ||
726f9984 | 570 | // Feed the header into the signature |
72633a85 | 571 | r = EVP_DigestSignUpdate(mdctx, header, sizeof(*header)); |
726f9984 MT |
572 | if (r != 1) { |
573 | ERROR(writer->ctx, "%s\n", ERR_error_string(ERR_get_error(), NULL)); | |
574 | goto END; | |
575 | } | |
576 | ||
577 | // Skip header | |
72633a85 | 578 | fseek(f, sizeof(*header), SEEK_CUR); |
726f9984 MT |
579 | |
580 | // Walk through the file in chunks of 64kB | |
581 | char buffer[64 * 1024]; | |
582 | while (!feof(f)) { | |
583 | size_t bytes_read = fread(buffer, 1, sizeof(buffer), f); | |
584 | ||
585 | if (ferror(f)) { | |
6cd02f1d | 586 | ERROR(writer->ctx, "Error reading from file: %m\n"); |
198e382c | 587 | r = 1; |
726f9984 MT |
588 | goto END; |
589 | } | |
590 | ||
a0cff45d MT |
591 | hexdump(writer->ctx, buffer, bytes_read); |
592 | ||
726f9984 MT |
593 | r = EVP_DigestSignUpdate(mdctx, buffer, bytes_read); |
594 | if (r != 1) { | |
595 | ERROR(writer->ctx, "%s\n", ERR_error_string(ERR_get_error(), NULL)); | |
5ce881d4 | 596 | r = -1; |
726f9984 MT |
597 | goto END; |
598 | } | |
599 | } | |
600 | ||
601 | // Compute the signature | |
726f9984 | 602 | r = EVP_DigestSignFinal(mdctx, |
5ce881d4 | 603 | (unsigned char*)signature, length); |
726f9984 MT |
604 | if (r != 1) { |
605 | ERROR(writer->ctx, "%s\n", ERR_error_string(ERR_get_error(), NULL)); | |
5ce881d4 | 606 | r = -1; |
726f9984 MT |
607 | goto END; |
608 | } | |
609 | ||
36b9fd75 | 610 | DEBUG(writer->ctx, "Successfully generated signature of %zu bytes\n", *length); |
726f9984 MT |
611 | r = 0; |
612 | ||
257626f5 | 613 | // Dump signature |
5ce881d4 | 614 | hexdump(writer->ctx, signature, *length); |
257626f5 | 615 | |
726f9984 MT |
616 | END: |
617 | EVP_MD_CTX_free(mdctx); | |
618 | ||
619 | return r; | |
620 | } | |
621 | ||
22c7b98b MT |
622 | LOC_EXPORT int loc_writer_write(struct loc_writer* writer, FILE* f, enum loc_database_version version) { |
623 | // Check version | |
624 | switch (version) { | |
625 | case LOC_DATABASE_VERSION_UNSET: | |
626 | version = LOC_DATABASE_VERSION_LATEST; | |
627 | break; | |
628 | ||
629 | case LOC_DATABASE_VERSION_1: | |
630 | break; | |
631 | ||
632 | default: | |
633 | ERROR(writer->ctx, "Invalid database version: %d\n", version); | |
634 | return -1; | |
635 | } | |
636 | ||
637 | DEBUG(writer->ctx, "Writing database in version %d\n", version); | |
638 | ||
c182393f | 639 | struct loc_database_magic magic; |
22c7b98b | 640 | make_magic(writer, &magic, version); |
c182393f MT |
641 | |
642 | // Make the header | |
b904896a | 643 | struct loc_database_header_v1 header; |
0676cd80 MT |
644 | header.vendor = htobe32(writer->vendor); |
645 | header.description = htobe32(writer->description); | |
4bf49d00 | 646 | header.license = htobe32(writer->license); |
c182393f MT |
647 | |
648 | time_t now = time(NULL); | |
649 | header.created_at = htobe64(now); | |
650 | ||
5ce881d4 MT |
651 | // Clear the signatures |
652 | memset(header.signature1, '\0', sizeof(header.signature1)); | |
653 | header.signature1_length = 0; | |
654 | memset(header.signature2, '\0', sizeof(header.signature2)); | |
655 | header.signature2_length = 0; | |
b1720435 | 656 | |
5e164830 | 657 | // Clear the padding |
c7db968a | 658 | memset(header.padding, '\0', sizeof(header.padding)); |
5e164830 | 659 | |
c182393f MT |
660 | int r; |
661 | off_t offset = 0; | |
662 | ||
663 | // Start writing at the beginning of the file | |
664 | r = fseek(f, 0, SEEK_SET); | |
665 | if (r) | |
666 | return r; | |
667 | ||
668 | // Write the magic | |
669 | offset += fwrite(&magic, 1, sizeof(magic), f); | |
670 | ||
671 | // Skip the space we need to write the header later | |
672 | r = fseek(f, sizeof(header), SEEK_CUR); | |
673 | if (r) { | |
674 | DEBUG(writer->ctx, "Could not seek to position after header\n"); | |
675 | return r; | |
676 | } | |
677 | offset += sizeof(header); | |
678 | ||
679 | align_page_boundary(&offset, f); | |
680 | ||
681 | // Write all ASes | |
682 | r = loc_database_write_as_section(writer, &header, &offset, f); | |
683 | if (r) | |
684 | return r; | |
685 | ||
f3e02bc5 | 686 | // Write all networks |
438db08c | 687 | r = loc_database_write_networks(writer, &header, &offset, f); |
f3e02bc5 MT |
688 | if (r) |
689 | return r; | |
690 | ||
47bea941 MT |
691 | // Write countries |
692 | r = loc_database_write_countries(writer, &header, &offset, f); | |
c182393f MT |
693 | if (r) |
694 | return r; | |
695 | ||
47bea941 MT |
696 | // Write pool |
697 | r = loc_database_write_pool(writer, &header, &offset, f); | |
ec684c1a MT |
698 | if (r) |
699 | return r; | |
700 | ||
5ce881d4 MT |
701 | // Create the signatures |
702 | if (writer->private_key1) { | |
703 | DEBUG(writer->ctx, "Creating signature with first private key\n"); | |
704 | ||
705 | writer->signature1_length = sizeof(writer->signature1); | |
706 | ||
707 | r = loc_writer_create_signature(writer, &header, f, | |
708 | writer->private_key1, writer->signature1, &writer->signature1_length); | |
726f9984 MT |
709 | if (r) |
710 | return r; | |
711 | } | |
712 | ||
5ce881d4 MT |
713 | if (writer->private_key2) { |
714 | DEBUG(writer->ctx, "Creating signature with second private key\n"); | |
715 | ||
716 | writer->signature2_length = sizeof(writer->signature2); | |
717 | ||
718 | r = loc_writer_create_signature(writer, &header, f, | |
719 | writer->private_key2, writer->signature2, &writer->signature2_length); | |
720 | if (r) | |
721 | return r; | |
722 | } | |
723 | ||
724 | // Copy the signatures into the header | |
725 | if (writer->signature1_length) { | |
c7db968a MT |
726 | DEBUG(writer->ctx, "Copying first signature of %zu byte(s)\n", |
727 | writer->signature1_length); | |
728 | ||
5ce881d4 | 729 | memcpy(header.signature1, writer->signature1, writer->signature1_length); |
c7db968a | 730 | header.signature1_length = htobe16(writer->signature1_length); |
5ce881d4 MT |
731 | } |
732 | ||
733 | if (writer->signature2_length) { | |
c7db968a MT |
734 | DEBUG(writer->ctx, "Copying second signature of %zu byte(s)\n", |
735 | writer->signature1_length); | |
736 | ||
5ce881d4 | 737 | memcpy(header.signature2, writer->signature2, writer->signature2_length); |
c7db968a | 738 | header.signature2_length = htobe16(writer->signature2_length); |
5ce881d4 MT |
739 | } |
740 | ||
c182393f MT |
741 | // Write the header |
742 | r = fseek(f, sizeof(magic), SEEK_SET); | |
743 | if (r) | |
744 | return r; | |
745 | ||
726f9984 | 746 | fwrite(&header, 1, sizeof(header), f); |
c182393f | 747 | |
726f9984 | 748 | return r; |
c182393f | 749 | } |