diff options
Diffstat (limited to 'src/lib/hello')
-rw-r--r-- | src/lib/hello/.gitignore | 5 | ||||
-rw-r--r-- | src/lib/hello/Makefile.am | 33 | ||||
-rw-r--r-- | src/lib/hello/gnunet-hello.c | 426 | ||||
-rw-r--r-- | src/lib/hello/hello-ng.c | 198 | ||||
-rw-r--r-- | src/lib/hello/hello-uri.c | 1045 | ||||
-rw-r--r-- | src/lib/hello/meson.build | 27 | ||||
-rw-r--r-- | src/lib/hello/test_hello-uri.c | 215 |
7 files changed, 1949 insertions, 0 deletions
diff --git a/src/lib/hello/.gitignore b/src/lib/hello/.gitignore new file mode 100644 index 000000000..d175d148e --- /dev/null +++ b/src/lib/hello/.gitignore | |||
@@ -0,0 +1,5 @@ | |||
1 | gnunet-hello | ||
2 | test_friend_hello | ||
3 | test_hello | ||
4 | test_hello-uri | ||
5 | test_hello-ng | ||
diff --git a/src/lib/hello/Makefile.am b/src/lib/hello/Makefile.am new file mode 100644 index 000000000..c7b3e4a05 --- /dev/null +++ b/src/lib/hello/Makefile.am | |||
@@ -0,0 +1,33 @@ | |||
1 | # This Makefile.am is in the public domain | ||
2 | AM_CPPFLAGS = -I$(top_srcdir)/src/include | ||
3 | |||
4 | if USE_COVERAGE | ||
5 | AM_CFLAGS = --coverage -O0 | ||
6 | XLIB = -lgcov | ||
7 | endif | ||
8 | |||
9 | lib_LTLIBRARIES = libgnunethello.la | ||
10 | |||
11 | libgnunethello_la_SOURCES = \ | ||
12 | hello-uri.c | ||
13 | libgnunethello_la_LIBADD = \ | ||
14 | $(top_builddir)/src/lib/util/libgnunetutil.la $(XLIB) \ | ||
15 | $(LTLIBINTL) | ||
16 | libgnunethello_la_LDFLAGS = \ | ||
17 | $(GN_LIB_LDFLAGS) \ | ||
18 | -version-info 1:0:1 | ||
19 | |||
20 | check_PROGRAMS = \ | ||
21 | test_hello-uri | ||
22 | |||
23 | if ENABLE_TEST_RUN | ||
24 | AM_TESTS_ENVIRONMENT=export GNUNET_PREFIX=$${GNUNET_PREFIX:-@libdir@};export PATH=$${GNUNET_PREFIX:-@prefix@}/bin:$$PATH;unset XDG_DATA_HOME;unset XDG_CONFIG_HOME; | ||
25 | TESTS = $(check_PROGRAMS) | ||
26 | endif | ||
27 | |||
28 | test_hello_uri_SOURCES = \ | ||
29 | test_hello-uri.c | ||
30 | test_hello_uri_LDADD = \ | ||
31 | libgnunethello.la \ | ||
32 | $(top_builddir)/src/lib/util/libgnunetutil.la \ | ||
33 | -lgcrypt | ||
diff --git a/src/lib/hello/gnunet-hello.c b/src/lib/hello/gnunet-hello.c new file mode 100644 index 000000000..aaa4b5005 --- /dev/null +++ b/src/lib/hello/gnunet-hello.c | |||
@@ -0,0 +1,426 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet | ||
3 | Copyright (C) 2012 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | |||
18 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | /** | ||
21 | * @file hello/gnunet-hello.c | ||
22 | * @brief change HELLO files to never expire | ||
23 | * @author Christian Grothoff | ||
24 | */ | ||
25 | #include "platform.h" | ||
26 | #include "gnunet_protocols.h" | ||
27 | #include "gnunet_hello_uri_lib.h" | ||
28 | #include "gnunet_transport_plugin.h" | ||
29 | |||
30 | /** | ||
31 | * Closure for #add_to_buf(). | ||
32 | */ | ||
33 | struct AddContext | ||
34 | { | ||
35 | /** | ||
36 | * Where to add. | ||
37 | */ | ||
38 | char *buf; | ||
39 | |||
40 | /** | ||
41 | * Maximum number of bytes left | ||
42 | */ | ||
43 | size_t max; | ||
44 | |||
45 | /** | ||
46 | * Number of bytes added so far. | ||
47 | */ | ||
48 | size_t ret; | ||
49 | |||
50 | struct GNUNET_HELLO_Builder *builder; | ||
51 | }; | ||
52 | |||
53 | /** | ||
54 | * Entry in doubly-linked list of all of our plugins. | ||
55 | */ | ||
56 | struct TransportPlugin | ||
57 | { | ||
58 | /** | ||
59 | * This is a doubly-linked list. | ||
60 | */ | ||
61 | struct TransportPlugin *next; | ||
62 | |||
63 | /** | ||
64 | * This is a doubly-linked list. | ||
65 | */ | ||
66 | struct TransportPlugin *prev; | ||
67 | |||
68 | /** | ||
69 | * API of the transport as returned by the plugin's | ||
70 | * initialization function. | ||
71 | */ | ||
72 | struct GNUNET_TRANSPORT_PluginFunctions *api; | ||
73 | |||
74 | /** | ||
75 | * Short name for the plugin (e.g. "tcp"). | ||
76 | */ | ||
77 | char *short_name; | ||
78 | |||
79 | /** | ||
80 | * Name of the library (e.g. "gnunet_plugin_transport_tcp"). | ||
81 | */ | ||
82 | char *lib_name; | ||
83 | |||
84 | /** | ||
85 | * Environment this transport service is using | ||
86 | * for this plugin. | ||
87 | */ | ||
88 | struct GNUNET_TRANSPORT_PluginEnvironment env; | ||
89 | }; | ||
90 | |||
91 | static int address_count; | ||
92 | |||
93 | /** | ||
94 | * Our private key. | ||
95 | */ | ||
96 | static struct GNUNET_CRYPTO_EddsaPrivateKey *my_private_key; | ||
97 | |||
98 | /** | ||
99 | * Local peer own ID. | ||
100 | */ | ||
101 | struct GNUNET_PeerIdentity my_full_id; | ||
102 | |||
103 | /** | ||
104 | * The file with hello in old style which we like to replace with the new one. | ||
105 | */ | ||
106 | static char *hello_file; | ||
107 | |||
108 | /** | ||
109 | * Head of DLL of all loaded plugins. | ||
110 | */ | ||
111 | static struct TransportPlugin *plugins_head; | ||
112 | |||
113 | /** | ||
114 | * Head of DLL of all loaded plugins. | ||
115 | */ | ||
116 | static struct TransportPlugin *plugins_tail; | ||
117 | |||
118 | static void | ||
119 | plugins_load (const struct GNUNET_CONFIGURATION_Handle *cfg) | ||
120 | { | ||
121 | struct TransportPlugin *plug; | ||
122 | struct TransportPlugin *next; | ||
123 | char *libname; | ||
124 | char *plugs; | ||
125 | char *pos; | ||
126 | |||
127 | if (NULL != plugins_head) | ||
128 | return; /* already loaded */ | ||
129 | if (GNUNET_OK != | ||
130 | GNUNET_CONFIGURATION_get_value_string (cfg, "TRANSPORT", "PLUGINS", | ||
131 | &plugs)) | ||
132 | return; | ||
133 | fprintf (stdout,"Starting transport plugins `%s'\n", | ||
134 | plugs); | ||
135 | for (pos = strtok (plugs, " "); pos != NULL; pos = strtok (NULL, " ")) | ||
136 | { | ||
137 | fprintf (stdout,"Loading `%s' transport plugin\n", | ||
138 | pos); | ||
139 | GNUNET_asprintf (&libname, "libgnunet_plugin_transport_%s", pos); | ||
140 | plug = GNUNET_new (struct TransportPlugin); | ||
141 | plug->short_name = GNUNET_strdup (pos); | ||
142 | plug->lib_name = libname; | ||
143 | plug->env.cfg = cfg; | ||
144 | plug->env.cls = plug->short_name; | ||
145 | GNUNET_CONTAINER_DLL_insert (plugins_head, plugins_tail, plug); | ||
146 | } | ||
147 | GNUNET_free (plugs); | ||
148 | next = plugins_head; | ||
149 | while (next != NULL) | ||
150 | { | ||
151 | plug = next; | ||
152 | next = plug->next; | ||
153 | plug->api = GNUNET_PLUGIN_load (plug->lib_name, &plug->env); | ||
154 | if (plug->api == NULL) | ||
155 | { | ||
156 | fprintf (stdout,"Failed to load transport plugin for `%s'\n", | ||
157 | plug->lib_name); | ||
158 | GNUNET_CONTAINER_DLL_remove (plugins_head, plugins_tail, plug); | ||
159 | GNUNET_free (plug->short_name); | ||
160 | GNUNET_free (plug->lib_name); | ||
161 | GNUNET_free (plug); | ||
162 | } | ||
163 | } | ||
164 | } | ||
165 | |||
166 | |||
167 | static int | ||
168 | add_to_builder (void *cls, | ||
169 | const struct GNUNET_HELLO_Address *address, | ||
170 | struct GNUNET_TIME_Absolute expiration) | ||
171 | { | ||
172 | struct GNUNET_HELLO_Builder *builder= cls; | ||
173 | struct TransportPlugin *pos = plugins_head; | ||
174 | const char *addr; | ||
175 | char *uri; | ||
176 | |||
177 | while (NULL != pos) | ||
178 | { | ||
179 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
180 | "short_name: %s transport_name: %s\n", | ||
181 | pos->short_name, | ||
182 | address->transport_name); | ||
183 | if (0 == strcmp (address->transport_name, pos->short_name)) | ||
184 | { | ||
185 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
186 | "short_name: %s transport_name: %s are the same\n", | ||
187 | pos->short_name, | ||
188 | address->transport_name); | ||
189 | addr = strchr (strchr (pos->api->address_to_string (pos, address, address->address_length), '.')+1, '.') + 1; | ||
190 | } | ||
191 | pos = pos->next; | ||
192 | } | ||
193 | |||
194 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
195 | "Hello address string: %s\n", | ||
196 | addr); | ||
197 | GNUNET_asprintf (&uri, "%s://%s", address->transport_name, addr); | ||
198 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
199 | "Hello address uri string: %s\n", | ||
200 | uri); | ||
201 | GNUNET_HELLO_builder_add_address (builder, | ||
202 | uri); | ||
203 | } | ||
204 | |||
205 | |||
206 | /** | ||
207 | * Add the given address with infinite expiration to the buffer. | ||
208 | * | ||
209 | * @param cls closure | ||
210 | * @param address address to add | ||
211 | * @param expiration old expiration | ||
212 | * @return #GNUNET_OK keep iterating | ||
213 | */ | ||
214 | static int | ||
215 | add_to_buf (void *cls, | ||
216 | const struct GNUNET_HELLO_Address *address, | ||
217 | struct GNUNET_TIME_Absolute expiration) | ||
218 | { | ||
219 | struct AddContext *ac = cls; | ||
220 | size_t ret; | ||
221 | |||
222 | ret = GNUNET_HELLO_add_address (address, | ||
223 | GNUNET_TIME_UNIT_FOREVER_ABS, | ||
224 | ac->buf, | ||
225 | ac->max); | ||
226 | |||
227 | ac->buf += ret; | ||
228 | ac->max -= ret; | ||
229 | ac->ret += ret; | ||
230 | address_count++; | ||
231 | return GNUNET_OK; | ||
232 | } | ||
233 | |||
234 | |||
235 | /** | ||
236 | * Add addresses from the address list to the HELLO. | ||
237 | * | ||
238 | * @param cls the HELLO with the addresses to add | ||
239 | * @param max maximum space available | ||
240 | * @param buf where to add the addresses | ||
241 | * @return number of bytes added, 0 to terminate | ||
242 | */ | ||
243 | static ssize_t | ||
244 | add_from_hello (void *cls, size_t max, void *buf) | ||
245 | { | ||
246 | struct GNUNET_HELLO_Message **orig = cls; | ||
247 | struct AddContext ac; | ||
248 | |||
249 | if (NULL == *orig) | ||
250 | return GNUNET_SYSERR; /* already done */ | ||
251 | ac.buf = buf; | ||
252 | ac.max = max; | ||
253 | ac.ret = 0; | ||
254 | GNUNET_assert ( | ||
255 | NULL == | ||
256 | GNUNET_HELLO_iterate_addresses (*orig, GNUNET_NO, &add_to_buf, &ac)); | ||
257 | *orig = NULL; | ||
258 | return ac.ret; | ||
259 | } | ||
260 | |||
261 | |||
262 | /** | ||
263 | * Main function that will be run without the scheduler. | ||
264 | * | ||
265 | * @param cls closure | ||
266 | * @param args remaining command-line arguments | ||
267 | * @param cfgfile name of the configuration file used (for saving, can be NULL!) | ||
268 | * @param c configuration | ||
269 | */ | ||
270 | static void | ||
271 | run (void *cls, | ||
272 | char *const *args, | ||
273 | const char *cfgfile, | ||
274 | const struct GNUNET_CONFIGURATION_Handle *c) | ||
275 | { | ||
276 | struct GNUNET_DISK_FileHandle *fh; | ||
277 | struct GNUNET_HELLO_Message *orig; | ||
278 | struct GNUNET_HELLO_Message *result; | ||
279 | struct GNUNET_PeerIdentity pid; | ||
280 | uint64_t fsize; | ||
281 | ssize_t size_written; | ||
282 | struct GNUNET_HELLO_Builder *builder; | ||
283 | char *url; | ||
284 | const struct GNUNET_MessageHeader *msg; | ||
285 | struct GNUNET_MQ_Envelope *env; | ||
286 | |||
287 | plugins_load (c); | ||
288 | address_count = 0; | ||
289 | |||
290 | my_private_key = | ||
291 | GNUNET_CRYPTO_eddsa_key_create_from_configuration (c); | ||
292 | GNUNET_CRYPTO_eddsa_key_get_public (my_private_key, | ||
293 | &my_full_id.public_key); | ||
294 | fprintf (stdout,"We are peer %s\n", GNUNET_i2s (&my_full_id)); | ||
295 | |||
296 | GNUNET_log_setup ("gnunet-hello", "DEBUG", NULL); | ||
297 | |||
298 | if (GNUNET_OK != | ||
299 | GNUNET_DISK_file_size (hello_file, &fsize, GNUNET_YES, GNUNET_YES)) | ||
300 | { | ||
301 | fprintf (stderr, | ||
302 | _ ("Error accessing file `%s': %s\n"), | ||
303 | hello_file, | ||
304 | strerror (errno)); | ||
305 | return; | ||
306 | } | ||
307 | if (fsize > 65536) | ||
308 | { | ||
309 | fprintf (stderr, _ ("File `%s' is too big to be a HELLO\n"), hello_file); | ||
310 | return; | ||
311 | } | ||
312 | if (fsize < sizeof(struct GNUNET_MessageHeader)) | ||
313 | { | ||
314 | fprintf (stderr, _ ("File `%s' is too small to be a HELLO\n"), hello_file); | ||
315 | return; | ||
316 | } | ||
317 | fh = GNUNET_DISK_file_open (hello_file, | ||
318 | GNUNET_DISK_OPEN_READ, | ||
319 | GNUNET_DISK_PERM_USER_READ); | ||
320 | if (NULL == fh) | ||
321 | { | ||
322 | fprintf (stderr, | ||
323 | _ ("Error opening file `%s': %s\n"), | ||
324 | hello_file, | ||
325 | strerror (errno)); | ||
326 | return; | ||
327 | } | ||
328 | { | ||
329 | char buf[fsize] GNUNET_ALIGN; | ||
330 | |||
331 | GNUNET_assert (fsize == GNUNET_DISK_file_read (fh, buf, fsize)); | ||
332 | GNUNET_assert (GNUNET_OK == GNUNET_DISK_file_close (fh)); | ||
333 | orig = (struct GNUNET_HELLO_Message *) buf; | ||
334 | if ((fsize < GNUNET_HELLO_size (orig)) || | ||
335 | (GNUNET_OK != GNUNET_HELLO_get_id (orig, &pid))) | ||
336 | { | ||
337 | fprintf (stderr, | ||
338 | _ ("Did not find well-formed HELLO in file `%s'\n"), | ||
339 | hello_file); | ||
340 | return; | ||
341 | } | ||
342 | { | ||
343 | char *pids; | ||
344 | |||
345 | pids = GNUNET_CRYPTO_eddsa_public_key_to_string (&my_full_id.public_key); | ||
346 | fprintf (stdout, "Processing HELLO for peer `%s'\n", pids); | ||
347 | GNUNET_free (pids); | ||
348 | } | ||
349 | /* result = GNUNET_HELLO_create (&pid.public_key, */ | ||
350 | /* &add_from_hello, */ | ||
351 | /* &orig, */ | ||
352 | /* GNUNET_HELLO_is_friend_only (orig)); */ | ||
353 | |||
354 | builder = GNUNET_HELLO_builder_new (&my_full_id); | ||
355 | GNUNET_assert ( | ||
356 | NULL == | ||
357 | GNUNET_HELLO_iterate_addresses ((const struct GNUNET_HELLO_Message *) orig, GNUNET_NO, &add_to_builder, builder)); | ||
358 | url = GNUNET_HELLO_builder_to_url (builder, my_private_key); | ||
359 | fprintf (stdout,"url: %s\n", url); | ||
360 | env = GNUNET_HELLO_builder_to_env (builder, | ||
361 | my_private_key, | ||
362 | GNUNET_TIME_UNIT_FOREVER_REL); | ||
363 | msg = GNUNET_MQ_env_get_msg (env); | ||
364 | //GNUNET_assert (NULL != result); | ||
365 | GNUNET_assert (NULL != msg); | ||
366 | fh = | ||
367 | GNUNET_DISK_file_open (hello_file, | ||
368 | GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_TRUNCATE, | ||
369 | GNUNET_DISK_PERM_USER_READ | ||
370 | | GNUNET_DISK_PERM_USER_WRITE); | ||
371 | if (NULL == fh) | ||
372 | { | ||
373 | fprintf (stderr, | ||
374 | _ ("Error opening file `%s': %s\n"), | ||
375 | hello_file, | ||
376 | strerror (errno)); | ||
377 | GNUNET_free (result); | ||
378 | return; | ||
379 | } | ||
380 | //fsize = GNUNET_HELLO_size (result); | ||
381 | size_written = GNUNET_DISK_file_write (fh, msg, ntohs (msg->size)); | ||
382 | if (ntohs (msg->size) != size_written) | ||
383 | { | ||
384 | fprintf (stderr, | ||
385 | _ ("Error writing HELLO to file `%s': %s expected size %u size written %u\n"), | ||
386 | hello_file, | ||
387 | strerror (errno)); | ||
388 | (void) GNUNET_DISK_file_close (fh); | ||
389 | return; | ||
390 | } | ||
391 | GNUNET_assert (GNUNET_OK == GNUNET_DISK_file_close (fh)); | ||
392 | } | ||
393 | fprintf (stderr, | ||
394 | _ ("Modified %u addresses, wrote %u bytes\n"), | ||
395 | address_count, | ||
396 | (unsigned int) ntohs (msg->size)); | ||
397 | GNUNET_HELLO_builder_free (builder); | ||
398 | } | ||
399 | |||
400 | |||
401 | int | ||
402 | main (int argc, char *argv[]) | ||
403 | { | ||
404 | struct GNUNET_GETOPT_CommandLineOption options[] = | ||
405 | { GNUNET_GETOPT_option_string ('h', | ||
406 | "hello-file", | ||
407 | "HELLO_FILE", | ||
408 | gettext_noop ("Hello file to read"), | ||
409 | &hello_file), | ||
410 | GNUNET_GETOPT_OPTION_END }; | ||
411 | int ret; | ||
412 | |||
413 | ret = (GNUNET_OK == | ||
414 | GNUNET_PROGRAM_run2 (argc, | ||
415 | argv, | ||
416 | "gnunet-peerinfo", | ||
417 | gettext_noop ("Print information about peers."), | ||
418 | options, | ||
419 | &run, | ||
420 | NULL, | ||
421 | GNUNET_YES)); | ||
422 | return ret; | ||
423 | } | ||
424 | |||
425 | |||
426 | /* end of gnunet-hello.c */ | ||
diff --git a/src/lib/hello/hello-ng.c b/src/lib/hello/hello-ng.c new file mode 100644 index 000000000..9c255b361 --- /dev/null +++ b/src/lib/hello/hello-ng.c | |||
@@ -0,0 +1,198 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2018 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | |||
18 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file hello/hello-ng.c | ||
23 | * @brief helper library for handling HELLOs | ||
24 | * @author Christian Grothoff | ||
25 | */ | ||
26 | #include "platform.h" | ||
27 | #include "gnunet_signatures.h" | ||
28 | #include "gnunet_hello_lib.h" | ||
29 | #include "gnunet_protocols.h" | ||
30 | #include "gnunet_util_lib.h" | ||
31 | |||
32 | GNUNET_NETWORK_STRUCT_BEGIN | ||
33 | /** | ||
34 | * Binary block we sign when we sign an address. | ||
35 | */ | ||
36 | struct SignedAddress | ||
37 | { | ||
38 | /** | ||
39 | * Purpose must be #GNUNET_SIGNATURE_PURPOSE_TRANSPORT_ADDRESS | ||
40 | */ | ||
41 | struct GNUNET_CRYPTO_EccSignaturePurpose purpose; | ||
42 | |||
43 | /** | ||
44 | * When was the address generated. | ||
45 | */ | ||
46 | struct GNUNET_TIME_AbsoluteNBO mono_time; | ||
47 | |||
48 | /** | ||
49 | * Hash of the address. | ||
50 | */ | ||
51 | struct GNUNET_HashCode addr_hash GNUNET_PACKED; | ||
52 | }; | ||
53 | GNUNET_NETWORK_STRUCT_END | ||
54 | |||
55 | /** | ||
56 | * Build address record by signing raw information with private key. | ||
57 | * | ||
58 | * @param address text address at @a communicator to sign | ||
59 | * @param nt network type of @a address | ||
60 | * @param mono_time monotonic time at which @a address was valid | ||
61 | * @param private_key signing key to use | ||
62 | * @param[out] result where to write address record (allocated) | ||
63 | * @param[out] result_size set to size of @a result | ||
64 | */ | ||
65 | void | ||
66 | GNUNET_HELLO_sign_address ( | ||
67 | const char *address, | ||
68 | enum GNUNET_NetworkType nt, | ||
69 | struct GNUNET_TIME_Absolute mono_time, | ||
70 | const struct GNUNET_CRYPTO_EddsaPrivateKey *private_key, | ||
71 | void **result, | ||
72 | size_t *result_size) | ||
73 | { | ||
74 | struct SignedAddress sa; | ||
75 | struct GNUNET_CRYPTO_EddsaSignature sig; | ||
76 | char *sig_str; | ||
77 | |||
78 | sa.purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_TRANSPORT_ADDRESS); | ||
79 | sa.purpose.size = htonl (sizeof(sa)); | ||
80 | sa.mono_time = GNUNET_TIME_absolute_hton (mono_time); | ||
81 | GNUNET_CRYPTO_hash (address, strlen (address), &sa.addr_hash); | ||
82 | GNUNET_CRYPTO_eddsa_sign (private_key, &sa, &sig); | ||
83 | sig_str = NULL; | ||
84 | (void) GNUNET_STRINGS_base64_encode (&sig, sizeof(sig), &sig_str); | ||
85 | *result_size = | ||
86 | 1 + GNUNET_asprintf ((char **) result, | ||
87 | "%s;%llu;%u;%s", | ||
88 | sig_str, | ||
89 | (unsigned long long) mono_time.abs_value_us, | ||
90 | (unsigned int) nt, | ||
91 | address); | ||
92 | GNUNET_free (sig_str); | ||
93 | } | ||
94 | |||
95 | |||
96 | /** | ||
97 | * Check signature and extract address record. | ||
98 | * | ||
99 | * @param raw raw signed address | ||
100 | * @param raw_size size of @a raw | ||
101 | * @param pid public key to use for signature verification | ||
102 | * @param nt[out] set to network type | ||
103 | * @param mono_time[out] when was the address generated | ||
104 | * @return NULL on error, otherwise the address | ||
105 | */ | ||
106 | char * | ||
107 | GNUNET_HELLO_extract_address (const void *raw, | ||
108 | size_t raw_size, | ||
109 | const struct GNUNET_PeerIdentity *pid, | ||
110 | enum GNUNET_NetworkType *nt, | ||
111 | struct GNUNET_TIME_Absolute *mono_time) | ||
112 | { | ||
113 | const struct GNUNET_CRYPTO_EddsaPublicKey *public_key = &pid->public_key; | ||
114 | const char *raws = raw; | ||
115 | unsigned long long raw_us = 0; | ||
116 | unsigned int raw_nt = 0; | ||
117 | const char *sc; | ||
118 | const char *sc2; | ||
119 | const char *sc3; | ||
120 | const char *raw_addr; | ||
121 | char *data = NULL; | ||
122 | struct GNUNET_TIME_Absolute raw_mono_time; | ||
123 | struct SignedAddress sa; | ||
124 | struct GNUNET_CRYPTO_EddsaSignature *sig; | ||
125 | |||
126 | if ('\0' != raws[raw_size-1]) | ||
127 | { | ||
128 | GNUNET_break_op (0); | ||
129 | return NULL; | ||
130 | } | ||
131 | if (NULL == (sc = strchr (raws, ';'))) | ||
132 | { | ||
133 | GNUNET_break_op (0); | ||
134 | return NULL; | ||
135 | } | ||
136 | if (NULL == (sc2 = strchr (sc + 1, ';'))) | ||
137 | { | ||
138 | GNUNET_break_op (0); | ||
139 | return NULL; | ||
140 | } | ||
141 | if (NULL == (sc3 = strchr (sc2 + 1, ';'))) | ||
142 | { | ||
143 | GNUNET_break_op (0); | ||
144 | return NULL; | ||
145 | } | ||
146 | if (2 != sscanf (sc + 1, "%llu;%u;%*s", &raw_us, &raw_nt)) | ||
147 | { | ||
148 | GNUNET_break_op (0); | ||
149 | return NULL; | ||
150 | } | ||
151 | raw_addr = sc3 + 1; | ||
152 | raw_mono_time.abs_value_us = raw_us; | ||
153 | if (sizeof(struct GNUNET_CRYPTO_EddsaSignature) != | ||
154 | GNUNET_STRINGS_base64_decode (raws, sc - raws, (void **) &data)) | ||
155 | { | ||
156 | GNUNET_break_op (0); | ||
157 | GNUNET_free (data); | ||
158 | return NULL; | ||
159 | } | ||
160 | sig = (struct GNUNET_CRYPTO_EddsaSignature*) data; | ||
161 | sa.purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_TRANSPORT_ADDRESS); | ||
162 | sa.purpose.size = htonl (sizeof(sa)); | ||
163 | sa.mono_time = GNUNET_TIME_absolute_hton (raw_mono_time); | ||
164 | GNUNET_CRYPTO_hash (raw_addr, strlen (raw_addr), &sa.addr_hash); | ||
165 | if (GNUNET_YES != | ||
166 | GNUNET_CRYPTO_eddsa_verify (GNUNET_SIGNATURE_PURPOSE_TRANSPORT_ADDRESS, | ||
167 | &sa, | ||
168 | sig, | ||
169 | public_key)) | ||
170 | { | ||
171 | GNUNET_free (data); | ||
172 | GNUNET_break_op (0); | ||
173 | return NULL; | ||
174 | } | ||
175 | GNUNET_free (data); | ||
176 | *mono_time = raw_mono_time; | ||
177 | *nt = raw_nt; | ||
178 | return GNUNET_strdup (raw_addr); | ||
179 | } | ||
180 | |||
181 | |||
182 | /** | ||
183 | * Given an address as a string, extract the prefix that identifies | ||
184 | * the communicator offering transmissions to that address. | ||
185 | * | ||
186 | * @param address a peer's address | ||
187 | * @return NULL if the address is mal-formed, otherwise the prefix | ||
188 | */ | ||
189 | char * | ||
190 | GNUNET_HELLO_address_to_prefix (const char *address) | ||
191 | { | ||
192 | const char *dash; | ||
193 | |||
194 | dash = strchr (address, '-'); | ||
195 | if (NULL == dash) | ||
196 | return NULL; | ||
197 | return GNUNET_strndup (address, dash - address); | ||
198 | } | ||
diff --git a/src/lib/hello/hello-uri.c b/src/lib/hello/hello-uri.c new file mode 100644 index 000000000..49acaf7a9 --- /dev/null +++ b/src/lib/hello/hello-uri.c | |||
@@ -0,0 +1,1045 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2022 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | |||
18 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file hello/hello-uri.c | ||
23 | * @brief helper library for handling URI-based HELLOs | ||
24 | * @author Christian Grothoff | ||
25 | * | ||
26 | * Note: | ||
27 | * - Current API does not support deserializing HELLO of | ||
28 | * another peer and then serializing it into another | ||
29 | * format (we always require the private key). | ||
30 | * Not sure if we need this, but if we do, we need | ||
31 | * to extend the builder and the API. | ||
32 | * - Current API does not allow overriding the default | ||
33 | * HELLO expiration time. We may want to add a function | ||
34 | * that does this to create bootstrap HELLOs shipped with | ||
35 | * the TGZ. | ||
36 | */ | ||
37 | #include "platform.h" | ||
38 | #include "gnunet_signatures.h" | ||
39 | #include "gnunet_hello_uri_lib.h" | ||
40 | #include "gnunet_protocols.h" | ||
41 | #include "gnunet_util_lib.h" | ||
42 | |||
43 | |||
44 | GNUNET_NETWORK_STRUCT_BEGIN | ||
45 | |||
46 | /** | ||
47 | * Binary block we sign when we sign an address. | ||
48 | */ | ||
49 | struct SignedAddress | ||
50 | { | ||
51 | /** | ||
52 | * Purpose must be #GNUNET_SIGNATURE_PURPOSE_TRANSPORT_ADDRESS | ||
53 | */ | ||
54 | struct GNUNET_CRYPTO_EccSignaturePurpose purpose; | ||
55 | |||
56 | /** | ||
57 | * When was the address generated. | ||
58 | */ | ||
59 | struct GNUNET_TIME_AbsoluteNBO mono_time; | ||
60 | |||
61 | /** | ||
62 | * Hash of the address. | ||
63 | */ | ||
64 | struct GNUNET_HashCode addr_hash GNUNET_PACKED; | ||
65 | }; | ||
66 | |||
67 | /** | ||
68 | * Message signed as part of a HELLO block/URL. | ||
69 | */ | ||
70 | struct HelloSignaturePurpose | ||
71 | { | ||
72 | /** | ||
73 | * Purpose must be #GNUNET_SIGNATURE_PURPOSE_HELLO | ||
74 | */ | ||
75 | struct GNUNET_CRYPTO_EccSignaturePurpose purpose; | ||
76 | |||
77 | /** | ||
78 | * When does the signature expire? | ||
79 | */ | ||
80 | struct GNUNET_TIME_AbsoluteNBO expiration_time; | ||
81 | |||
82 | /** | ||
83 | * Hash over all addresses. | ||
84 | */ | ||
85 | struct GNUNET_HashCode h_addrs; | ||
86 | |||
87 | }; | ||
88 | |||
89 | /** | ||
90 | * Message used when gossiping HELLOs between peers. | ||
91 | */ | ||
92 | struct HelloUriMessage | ||
93 | { | ||
94 | /** | ||
95 | * Type must be #GNUNET_MESSAGE_TYPE_HELLO_URI | ||
96 | */ | ||
97 | struct GNUNET_MessageHeader header; | ||
98 | |||
99 | /** | ||
100 | * Reserved. 0. | ||
101 | */ | ||
102 | uint16_t reserved GNUNET_PACKED; | ||
103 | |||
104 | /** | ||
105 | * Number of URLs encoded after the end of the struct, in NBO. | ||
106 | */ | ||
107 | uint16_t url_counter GNUNET_PACKED; | ||
108 | |||
109 | /* followed by a 'block' */ | ||
110 | }; | ||
111 | |||
112 | |||
113 | /** | ||
114 | * Start of a 'block'. | ||
115 | */ | ||
116 | struct BlockHeader | ||
117 | { | ||
118 | /** | ||
119 | * Public key of the peer. | ||
120 | */ | ||
121 | struct GNUNET_PeerIdentity pid; | ||
122 | |||
123 | /** | ||
124 | * Signature over the block, of purpose #GNUNET_SIGNATURE_PURPOSE_HELLO. | ||
125 | */ | ||
126 | struct GNUNET_CRYPTO_EddsaSignature sig; | ||
127 | |||
128 | /** | ||
129 | * When does the HELLO expire? | ||
130 | */ | ||
131 | struct GNUNET_TIME_AbsoluteNBO expiration_time; | ||
132 | |||
133 | }; | ||
134 | |||
135 | |||
136 | /** | ||
137 | * Message used when a DHT provides its HELLO to direct | ||
138 | * neighbours. | ||
139 | */ | ||
140 | struct DhtHelloMessage | ||
141 | { | ||
142 | /** | ||
143 | * Type must be #GNUNET_MESSAGE_TYPE_DHT_P2P_HELLO | ||
144 | */ | ||
145 | struct GNUNET_MessageHeader header; | ||
146 | |||
147 | /** | ||
148 | * Reserved. 0. | ||
149 | */ | ||
150 | uint16_t reserved GNUNET_PACKED; | ||
151 | |||
152 | /** | ||
153 | * Number of URLs encoded after the end of the struct, in NBO. | ||
154 | */ | ||
155 | uint16_t url_counter GNUNET_PACKED; | ||
156 | |||
157 | /** | ||
158 | * Signature over the block, of purpose #GNUNET_SIGNATURE_PURPOSE_HELLO. | ||
159 | */ | ||
160 | struct GNUNET_CRYPTO_EddsaSignature sig; | ||
161 | |||
162 | /** | ||
163 | * When does the HELLO expire? | ||
164 | */ | ||
165 | struct GNUNET_TIME_AbsoluteNBO expiration_time; | ||
166 | |||
167 | /* followed by the serialized addresses of the 'block' */ | ||
168 | }; | ||
169 | |||
170 | |||
171 | GNUNET_NETWORK_STRUCT_END | ||
172 | |||
173 | |||
174 | /** | ||
175 | * Address of a peer. | ||
176 | */ | ||
177 | struct Address | ||
178 | { | ||
179 | /** | ||
180 | * Kept in a DLL. | ||
181 | */ | ||
182 | struct Address *next; | ||
183 | |||
184 | /** | ||
185 | * Kept in a DLL. | ||
186 | */ | ||
187 | struct Address *prev; | ||
188 | |||
189 | /** | ||
190 | * Actual URI, allocated at the end of this struct. | ||
191 | */ | ||
192 | const char *uri; | ||
193 | |||
194 | /** | ||
195 | * Length of @a uri including 0-terminator. | ||
196 | */ | ||
197 | size_t uri_len; | ||
198 | }; | ||
199 | |||
200 | |||
201 | /** | ||
202 | * Context for building (or parsing) HELLO URIs. | ||
203 | */ | ||
204 | struct GNUNET_HELLO_Builder | ||
205 | { | ||
206 | /** | ||
207 | * Public key of the peer. | ||
208 | */ | ||
209 | struct GNUNET_PeerIdentity pid; | ||
210 | |||
211 | /** | ||
212 | * Head of the addresses DLL. | ||
213 | */ | ||
214 | struct Address *a_head; | ||
215 | |||
216 | /** | ||
217 | * Tail of the addresses DLL. | ||
218 | */ | ||
219 | struct Address *a_tail; | ||
220 | |||
221 | /** | ||
222 | * Length of the @a a_head DLL. | ||
223 | */ | ||
224 | unsigned int a_length; | ||
225 | |||
226 | }; | ||
227 | |||
228 | /** | ||
229 | * Struct to wrap data to do the merge of to hello uris. | ||
230 | */ | ||
231 | struct AddressUriMergeResult | ||
232 | { | ||
233 | /** | ||
234 | * The builder of the hello uri we merge with. | ||
235 | */ | ||
236 | struct GNUNET_HELLO_Builder *builder; | ||
237 | |||
238 | /** | ||
239 | * The actual address to check, if it is allready in the hello uri we merge with. | ||
240 | */ | ||
241 | const char *address_uri; | ||
242 | |||
243 | /** | ||
244 | * Did we found the actual address to check. | ||
245 | */ | ||
246 | unsigned int found; | ||
247 | |||
248 | /** | ||
249 | * Did we found at least one address to merge. | ||
250 | */ | ||
251 | unsigned int merged; | ||
252 | }; | ||
253 | |||
254 | |||
255 | /** | ||
256 | * Compute @a hash over addresses in @a builder. | ||
257 | * | ||
258 | * @param builder the builder to hash addresses of | ||
259 | * @param[out] hash where to write the hash | ||
260 | */ | ||
261 | static void | ||
262 | hash_addresses (const struct GNUNET_HELLO_Builder *builder, | ||
263 | struct GNUNET_HashCode *hash) | ||
264 | { | ||
265 | struct GNUNET_HashContext *hc; | ||
266 | |||
267 | hc = GNUNET_CRYPTO_hash_context_start (); | ||
268 | for (struct Address *a = builder->a_head; | ||
269 | NULL != a; | ||
270 | a = a->next) | ||
271 | { | ||
272 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
273 | "Hashing over %.*s\n", | ||
274 | (int) a->uri_len, | ||
275 | a->uri); | ||
276 | GNUNET_CRYPTO_hash_context_read (hc, | ||
277 | a->uri, | ||
278 | a->uri_len); | ||
279 | } | ||
280 | GNUNET_CRYPTO_hash_context_finish (hc, | ||
281 | hash); | ||
282 | |||
283 | } | ||
284 | |||
285 | |||
286 | /** | ||
287 | * Create HELLO signature. | ||
288 | * | ||
289 | * @param builder the builder to use | ||
290 | * @param et expiration time to sign | ||
291 | * @param priv key to sign with | ||
292 | * @param[out] sig where to write the signature | ||
293 | */ | ||
294 | static void | ||
295 | sign_hello (const struct GNUNET_HELLO_Builder *builder, | ||
296 | struct GNUNET_TIME_Timestamp et, | ||
297 | const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, | ||
298 | struct GNUNET_CRYPTO_EddsaSignature *sig) | ||
299 | { | ||
300 | struct HelloSignaturePurpose hsp = { | ||
301 | .purpose.size = htonl (sizeof (hsp)), | ||
302 | .purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_HELLO), | ||
303 | .expiration_time = GNUNET_TIME_absolute_hton (et.abs_time) | ||
304 | }; | ||
305 | |||
306 | hash_addresses (builder, | ||
307 | &hsp.h_addrs); | ||
308 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
309 | "Address hash is %s\n", | ||
310 | GNUNET_h2s_full (&hsp.h_addrs)); | ||
311 | GNUNET_CRYPTO_eddsa_sign (priv, | ||
312 | &hsp, | ||
313 | sig); | ||
314 | } | ||
315 | |||
316 | |||
317 | /** | ||
318 | * Verify HELLO signature. | ||
319 | * | ||
320 | * @param builder the builder to use | ||
321 | * @param et expiration time to verify | ||
322 | * @param sig signature to verify | ||
323 | * @return #GNUNET_OK if everything is ok, #GNUNET_NO if the | ||
324 | * HELLO expired, #GNUNET_SYSERR if the signature is wrong | ||
325 | */ | ||
326 | static enum GNUNET_GenericReturnValue | ||
327 | verify_hello (const struct GNUNET_HELLO_Builder *builder, | ||
328 | struct GNUNET_TIME_Absolute et, | ||
329 | const struct GNUNET_CRYPTO_EddsaSignature *sig) | ||
330 | { | ||
331 | struct HelloSignaturePurpose hsp = { | ||
332 | .purpose.size = htonl (sizeof (hsp)), | ||
333 | .purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_HELLO), | ||
334 | .expiration_time = GNUNET_TIME_absolute_hton (et) | ||
335 | }; | ||
336 | |||
337 | hash_addresses (builder, | ||
338 | &hsp.h_addrs); | ||
339 | if (GNUNET_OK != | ||
340 | GNUNET_CRYPTO_eddsa_verify (GNUNET_SIGNATURE_PURPOSE_HELLO, | ||
341 | &hsp, | ||
342 | sig, | ||
343 | &builder->pid.public_key)) | ||
344 | { | ||
345 | GNUNET_break_op (0); | ||
346 | return GNUNET_SYSERR; | ||
347 | } | ||
348 | if (GNUNET_TIME_absolute_is_past (et)) | ||
349 | return GNUNET_NO; | ||
350 | return GNUNET_OK; | ||
351 | } | ||
352 | |||
353 | |||
354 | struct GNUNET_HELLO_Builder * | ||
355 | GNUNET_HELLO_builder_new (const struct GNUNET_PeerIdentity *pid) | ||
356 | { | ||
357 | struct GNUNET_HELLO_Builder *builder; | ||
358 | |||
359 | builder = GNUNET_new (struct GNUNET_HELLO_Builder); | ||
360 | builder->pid = *pid; | ||
361 | return builder; | ||
362 | } | ||
363 | |||
364 | |||
365 | const struct GNUNET_PeerIdentity * | ||
366 | GNUNET_HELLO_builder_get_id (const struct GNUNET_HELLO_Builder *builder) | ||
367 | { | ||
368 | return &builder->pid; | ||
369 | } | ||
370 | |||
371 | |||
372 | void | ||
373 | GNUNET_HELLO_builder_free (struct GNUNET_HELLO_Builder *builder) | ||
374 | { | ||
375 | struct Address *a; | ||
376 | |||
377 | while (NULL != (a = builder->a_head)) | ||
378 | { | ||
379 | GNUNET_CONTAINER_DLL_remove (builder->a_head, | ||
380 | builder->a_tail, | ||
381 | a); | ||
382 | builder->a_length--; | ||
383 | GNUNET_free (a); | ||
384 | } | ||
385 | GNUNET_assert (0 == builder->a_length); | ||
386 | GNUNET_free (builder); | ||
387 | } | ||
388 | |||
389 | |||
390 | struct GNUNET_HELLO_Builder * | ||
391 | GNUNET_HELLO_builder_from_msg (const struct GNUNET_MessageHeader *msg) | ||
392 | { | ||
393 | const struct HelloUriMessage *h; | ||
394 | uint16_t size = ntohs (msg->size); | ||
395 | |||
396 | if (GNUNET_MESSAGE_TYPE_HELLO_URI != ntohs (msg->type)) | ||
397 | { | ||
398 | GNUNET_break (0); | ||
399 | return NULL; | ||
400 | } | ||
401 | if (sizeof (struct HelloUriMessage) > size) | ||
402 | { | ||
403 | GNUNET_break_op (0); | ||
404 | return NULL; | ||
405 | } | ||
406 | h = (const struct HelloUriMessage *) msg; | ||
407 | size -= sizeof (*h); | ||
408 | return GNUNET_HELLO_builder_from_block (&h[1], | ||
409 | size); | ||
410 | } | ||
411 | |||
412 | |||
413 | struct GNUNET_HELLO_Builder * | ||
414 | GNUNET_HELLO_builder_from_block (const void *block, | ||
415 | size_t block_size) | ||
416 | { | ||
417 | const struct BlockHeader *bh = block; | ||
418 | struct GNUNET_HELLO_Builder *b; | ||
419 | |||
420 | if (block_size < sizeof (*bh)) | ||
421 | { | ||
422 | GNUNET_break_op (0); | ||
423 | return NULL; | ||
424 | } | ||
425 | b = GNUNET_HELLO_builder_new (&bh->pid); | ||
426 | block += sizeof (*bh); | ||
427 | block_size -= sizeof (*bh); | ||
428 | while (block_size > 0) | ||
429 | { | ||
430 | const void *end = memchr (block, | ||
431 | '\0', | ||
432 | block_size); | ||
433 | |||
434 | if (NULL == end) | ||
435 | { | ||
436 | GNUNET_break_op (0); | ||
437 | GNUNET_HELLO_builder_free (b); | ||
438 | return NULL; | ||
439 | } | ||
440 | if (GNUNET_OK != | ||
441 | GNUNET_HELLO_builder_add_address (b, | ||
442 | block)) | ||
443 | { | ||
444 | GNUNET_break_op (0); | ||
445 | GNUNET_HELLO_builder_free (b); | ||
446 | return NULL; | ||
447 | } | ||
448 | end++; | ||
449 | block_size -= (end - block); | ||
450 | block = end; | ||
451 | } | ||
452 | { | ||
453 | enum GNUNET_GenericReturnValue ret; | ||
454 | |||
455 | ret = verify_hello (b, | ||
456 | GNUNET_TIME_absolute_ntoh (bh->expiration_time), | ||
457 | &bh->sig); | ||
458 | GNUNET_break (GNUNET_SYSERR != ret); | ||
459 | if (GNUNET_OK != ret) | ||
460 | { | ||
461 | GNUNET_HELLO_builder_free (b); | ||
462 | return NULL; | ||
463 | } | ||
464 | } | ||
465 | return b; | ||
466 | } | ||
467 | |||
468 | |||
469 | struct GNUNET_TIME_Absolute | ||
470 | GNUNET_HELLO_builder_get_expiration_time (const struct | ||
471 | GNUNET_MessageHeader *msg) | ||
472 | { | ||
473 | if (GNUNET_MESSAGE_TYPE_HELLO_URI == ntohs (msg->type)) | ||
474 | { | ||
475 | const struct HelloUriMessage *h = (struct HelloUriMessage *) msg; | ||
476 | const struct BlockHeader *bh = (const struct BlockHeader *) &h[1]; | ||
477 | |||
478 | return GNUNET_TIME_absolute_ntoh (bh->expiration_time); | ||
479 | } | ||
480 | else if (GNUNET_MESSAGE_TYPE_DHT_P2P_HELLO == ntohs (msg->type)) | ||
481 | { | ||
482 | const struct DhtHelloMessage *dht_hello = (struct DhtHelloMessage *) msg; | ||
483 | |||
484 | return GNUNET_TIME_absolute_ntoh (dht_hello->expiration_time); | ||
485 | } | ||
486 | else | ||
487 | GNUNET_break (0); | ||
488 | return GNUNET_TIME_UNIT_ZERO_ABS; | ||
489 | } | ||
490 | |||
491 | |||
492 | struct GNUNET_HELLO_Builder * | ||
493 | GNUNET_HELLO_builder_from_url (const char *url) | ||
494 | { | ||
495 | const char *q; | ||
496 | const char *s1; | ||
497 | const char *s2; | ||
498 | struct GNUNET_PeerIdentity pid; | ||
499 | struct GNUNET_CRYPTO_EddsaSignature sig; | ||
500 | struct GNUNET_TIME_Absolute et; | ||
501 | size_t len; | ||
502 | struct GNUNET_HELLO_Builder *b; | ||
503 | |||
504 | if (0 != strncasecmp (url, | ||
505 | "gnunet://hello/", | ||
506 | strlen ("gnunet://hello/"))) | ||
507 | return NULL; | ||
508 | url += strlen ("gnunet://hello/"); | ||
509 | s1 = strchr (url, '/'); | ||
510 | if (NULL == s1) | ||
511 | { | ||
512 | GNUNET_break_op (0); | ||
513 | return NULL; | ||
514 | } | ||
515 | s2 = strchr (s1 + 1, '/'); | ||
516 | if (NULL == s1) | ||
517 | { | ||
518 | GNUNET_break_op (0); | ||
519 | return NULL; | ||
520 | } | ||
521 | q = strchr (url, '?'); | ||
522 | if (NULL == q) | ||
523 | q = url + strlen (url); | ||
524 | if (GNUNET_OK != | ||
525 | GNUNET_STRINGS_string_to_data (url, | ||
526 | s1 - url, | ||
527 | &pid, | ||
528 | sizeof(pid))) | ||
529 | { | ||
530 | GNUNET_break_op (0); | ||
531 | return NULL; | ||
532 | } | ||
533 | if (GNUNET_OK != | ||
534 | GNUNET_STRINGS_string_to_data (s1 + 1, | ||
535 | s2 - (s1 + 1), | ||
536 | &sig, | ||
537 | sizeof(sig))) | ||
538 | { | ||
539 | GNUNET_break_op (0); | ||
540 | return NULL; | ||
541 | } | ||
542 | { | ||
543 | unsigned long long sec; | ||
544 | char dummy = '?'; | ||
545 | |||
546 | if ( (0 == sscanf (s2 + 1, | ||
547 | "%llu%c", | ||
548 | &sec, | ||
549 | &dummy)) || | ||
550 | ('?' != dummy) ) | ||
551 | { | ||
552 | GNUNET_break_op (0); | ||
553 | return NULL; | ||
554 | } | ||
555 | et = GNUNET_TIME_absolute_from_s (sec); | ||
556 | } | ||
557 | |||
558 | b = GNUNET_HELLO_builder_new (&pid); | ||
559 | len = strlen (q); | ||
560 | while (len > 0) | ||
561 | { | ||
562 | const char *eq; | ||
563 | const char *amp; | ||
564 | char *addr = NULL; | ||
565 | char *uri; | ||
566 | |||
567 | /* skip ?/& separator */ | ||
568 | len--; | ||
569 | q++; | ||
570 | eq = strchr (q, '='); | ||
571 | if ( (eq == q) || | ||
572 | (NULL == eq) ) | ||
573 | { | ||
574 | GNUNET_break_op (0); | ||
575 | GNUNET_HELLO_builder_free (b); | ||
576 | return NULL; | ||
577 | } | ||
578 | amp = strchr (eq, '&'); | ||
579 | if (NULL == amp) | ||
580 | amp = &q[len]; | ||
581 | GNUNET_STRINGS_urldecode (eq + 1, | ||
582 | amp - (eq + 1), | ||
583 | &addr); | ||
584 | if ( (NULL == addr) || | ||
585 | (0 == strlen (addr)) ) | ||
586 | { | ||
587 | GNUNET_free (addr); | ||
588 | GNUNET_break_op (0); | ||
589 | GNUNET_HELLO_builder_free (b); | ||
590 | return NULL; | ||
591 | } | ||
592 | GNUNET_asprintf (&uri, | ||
593 | "%.*s://%s", | ||
594 | (int) (eq - q), | ||
595 | q, | ||
596 | addr); | ||
597 | GNUNET_free (addr); | ||
598 | if (GNUNET_OK != | ||
599 | GNUNET_HELLO_builder_add_address (b, | ||
600 | uri)) | ||
601 | { | ||
602 | GNUNET_break_op (0); | ||
603 | GNUNET_free (uri); | ||
604 | GNUNET_HELLO_builder_free (b); | ||
605 | return NULL; | ||
606 | } | ||
607 | GNUNET_free (uri); | ||
608 | /* move to next URL */ | ||
609 | len -= (amp - q); | ||
610 | q = amp; | ||
611 | } | ||
612 | |||
613 | { | ||
614 | enum GNUNET_GenericReturnValue ret; | ||
615 | |||
616 | ret = verify_hello (b, | ||
617 | et, | ||
618 | &sig); | ||
619 | GNUNET_break (GNUNET_SYSERR != ret); | ||
620 | if (GNUNET_OK != ret) | ||
621 | { | ||
622 | GNUNET_HELLO_builder_free (b); | ||
623 | return NULL; | ||
624 | } | ||
625 | } | ||
626 | return b; | ||
627 | } | ||
628 | |||
629 | |||
630 | struct GNUNET_MQ_Envelope * | ||
631 | GNUNET_HELLO_builder_to_env (const struct GNUNET_HELLO_Builder *builder, | ||
632 | const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, | ||
633 | struct GNUNET_TIME_Relative expiration_time) | ||
634 | { | ||
635 | struct GNUNET_MQ_Envelope *env; | ||
636 | struct HelloUriMessage *msg; | ||
637 | size_t blen; | ||
638 | |||
639 | if (builder->a_length > UINT16_MAX) | ||
640 | { | ||
641 | GNUNET_break (0); | ||
642 | return NULL; | ||
643 | } | ||
644 | blen = 0; | ||
645 | GNUNET_assert (GNUNET_NO == | ||
646 | GNUNET_HELLO_builder_to_block (builder, | ||
647 | priv, | ||
648 | NULL, | ||
649 | &blen, | ||
650 | expiration_time)); | ||
651 | env = GNUNET_MQ_msg_extra (msg, | ||
652 | blen, | ||
653 | GNUNET_MESSAGE_TYPE_HELLO_URI); | ||
654 | msg->url_counter = htons ((uint16_t) builder->a_length); | ||
655 | GNUNET_assert (GNUNET_OK == | ||
656 | GNUNET_HELLO_builder_to_block (builder, | ||
657 | priv, | ||
658 | &msg[1], | ||
659 | &blen, | ||
660 | expiration_time)); | ||
661 | return env; | ||
662 | } | ||
663 | |||
664 | |||
665 | struct GNUNET_MessageHeader * | ||
666 | GNUNET_HELLO_builder_to_dht_hello_msg ( | ||
667 | const struct GNUNET_HELLO_Builder *builder, | ||
668 | const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, | ||
669 | struct GNUNET_TIME_Relative expiration_time) | ||
670 | { | ||
671 | struct DhtHelloMessage *msg; | ||
672 | size_t blen; | ||
673 | |||
674 | if (builder->a_length > UINT16_MAX) | ||
675 | { | ||
676 | GNUNET_break (0); | ||
677 | return NULL; | ||
678 | } | ||
679 | blen = 0; | ||
680 | GNUNET_assert (GNUNET_NO == | ||
681 | GNUNET_HELLO_builder_to_block (builder, | ||
682 | priv, | ||
683 | NULL, | ||
684 | &blen, | ||
685 | expiration_time)); | ||
686 | GNUNET_assert (blen < UINT16_MAX); | ||
687 | GNUNET_assert (blen >= sizeof (struct BlockHeader)); | ||
688 | { | ||
689 | char buf[blen] GNUNET_ALIGN; | ||
690 | const struct BlockHeader *block = (const struct BlockHeader *) buf; | ||
691 | |||
692 | GNUNET_assert (GNUNET_OK == | ||
693 | GNUNET_HELLO_builder_to_block (builder, | ||
694 | priv, | ||
695 | buf, | ||
696 | &blen, | ||
697 | expiration_time)); | ||
698 | msg = GNUNET_malloc (sizeof (*msg) | ||
699 | + blen | ||
700 | - sizeof (*block)); | ||
701 | msg->header.type = htons (GNUNET_MESSAGE_TYPE_DHT_P2P_HELLO); | ||
702 | msg->header.size = htons (sizeof (*msg) | ||
703 | + blen | ||
704 | - sizeof (*block)); | ||
705 | memcpy (&msg[1], | ||
706 | &block[1], | ||
707 | blen - sizeof (*block)); | ||
708 | msg->sig = block->sig; | ||
709 | msg->expiration_time = block->expiration_time; | ||
710 | } | ||
711 | msg->url_counter = htons ((uint16_t) builder->a_length); | ||
712 | return &msg->header; | ||
713 | } | ||
714 | |||
715 | |||
716 | char * | ||
717 | GNUNET_HELLO_builder_to_url (const struct GNUNET_HELLO_Builder *builder, | ||
718 | const struct GNUNET_CRYPTO_EddsaPrivateKey *priv) | ||
719 | { | ||
720 | struct GNUNET_CRYPTO_EddsaSignature sig; | ||
721 | struct GNUNET_TIME_Timestamp et; | ||
722 | char *result; | ||
723 | char *pids; | ||
724 | char *sigs; | ||
725 | const char *sep = "?"; | ||
726 | |||
727 | et = GNUNET_TIME_relative_to_timestamp (GNUNET_HELLO_ADDRESS_EXPIRATION); | ||
728 | sign_hello (builder, | ||
729 | et, | ||
730 | priv, | ||
731 | &sig); | ||
732 | pids = GNUNET_STRINGS_data_to_string_alloc (&builder->pid, | ||
733 | sizeof (builder->pid)); | ||
734 | sigs = GNUNET_STRINGS_data_to_string_alloc (&sig, | ||
735 | sizeof (sig)); | ||
736 | GNUNET_asprintf (&result, | ||
737 | "gnunet://hello/%s/%s/%llu", | ||
738 | pids, | ||
739 | sigs, | ||
740 | (unsigned long long) GNUNET_TIME_timestamp_to_s (et)); | ||
741 | GNUNET_free (sigs); | ||
742 | GNUNET_free (pids); | ||
743 | for (struct Address *a = builder->a_head; | ||
744 | NULL != a; | ||
745 | a = a->next) | ||
746 | { | ||
747 | char *ue; | ||
748 | char *tmp; | ||
749 | int pfx_len; | ||
750 | const char *eou; | ||
751 | |||
752 | eou = strstr (a->uri, | ||
753 | "://"); | ||
754 | if (NULL == eou) | ||
755 | { | ||
756 | GNUNET_break (0); | ||
757 | GNUNET_free (result); | ||
758 | return NULL; | ||
759 | } | ||
760 | pfx_len = eou - a->uri; | ||
761 | eou += 3; | ||
762 | GNUNET_STRINGS_urlencode (a->uri_len - 4 - pfx_len, | ||
763 | eou, | ||
764 | &ue); | ||
765 | GNUNET_asprintf (&tmp, | ||
766 | "%s%s%.*s=%s", | ||
767 | result, | ||
768 | sep, | ||
769 | pfx_len, | ||
770 | a->uri, | ||
771 | ue); | ||
772 | GNUNET_free (ue); | ||
773 | GNUNET_free (result); | ||
774 | result = tmp; | ||
775 | sep = "&"; | ||
776 | } | ||
777 | return result; | ||
778 | } | ||
779 | |||
780 | |||
781 | enum GNUNET_GenericReturnValue | ||
782 | GNUNET_HELLO_builder_to_block (const struct GNUNET_HELLO_Builder *builder, | ||
783 | const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, | ||
784 | void *block, | ||
785 | size_t *block_size, | ||
786 | struct GNUNET_TIME_Relative expiration_time) | ||
787 | { | ||
788 | struct BlockHeader bh; | ||
789 | size_t needed = sizeof (bh); | ||
790 | char *pos; | ||
791 | struct GNUNET_TIME_Timestamp et; | ||
792 | |||
793 | for (struct Address *a = builder->a_head; | ||
794 | NULL != a; | ||
795 | a = a->next) | ||
796 | { | ||
797 | GNUNET_assert (needed + a->uri_len > needed); | ||
798 | needed += a->uri_len; | ||
799 | } | ||
800 | if ( (NULL == block) || | ||
801 | (needed < *block_size) ) | ||
802 | { | ||
803 | *block_size = needed; | ||
804 | return GNUNET_NO; | ||
805 | } | ||
806 | bh.pid = builder->pid; | ||
807 | if (GNUNET_TIME_UNIT_ZERO.rel_value_us == expiration_time.rel_value_us) | ||
808 | et = GNUNET_TIME_relative_to_timestamp (GNUNET_HELLO_ADDRESS_EXPIRATION); | ||
809 | else | ||
810 | et = GNUNET_TIME_relative_to_timestamp (expiration_time); | ||
811 | bh.expiration_time = GNUNET_TIME_absolute_hton (et.abs_time); | ||
812 | sign_hello (builder, | ||
813 | et, | ||
814 | priv, | ||
815 | &bh.sig); | ||
816 | memcpy (block, | ||
817 | &bh, | ||
818 | sizeof (bh)); | ||
819 | pos = block + sizeof (bh); | ||
820 | for (struct Address *a = builder->a_head; | ||
821 | NULL != a; | ||
822 | a = a->next) | ||
823 | { | ||
824 | memcpy (pos, | ||
825 | a->uri, | ||
826 | a->uri_len); | ||
827 | pos += a->uri_len; | ||
828 | } | ||
829 | *block_size = needed; | ||
830 | return GNUNET_OK; | ||
831 | } | ||
832 | |||
833 | |||
834 | enum GNUNET_GenericReturnValue | ||
835 | GNUNET_HELLO_builder_add_address (struct GNUNET_HELLO_Builder *builder, | ||
836 | const char *address) | ||
837 | { | ||
838 | size_t alen = strlen (address) + 1; | ||
839 | struct Address *a; | ||
840 | const char *e; | ||
841 | |||
842 | if (NULL == (e = strstr (address, | ||
843 | "://"))) | ||
844 | { | ||
845 | GNUNET_break_op (0); | ||
846 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
847 | "Invalid address `%s'\n", | ||
848 | address); | ||
849 | return GNUNET_SYSERR; | ||
850 | } | ||
851 | if (e == address) | ||
852 | { | ||
853 | GNUNET_break_op (0); | ||
854 | return GNUNET_SYSERR; | ||
855 | } | ||
856 | for (const char *p = address; p != e; p++) | ||
857 | if ( (! isalpha ((unsigned char) *p)) && | ||
858 | ('+' != *p) ) | ||
859 | { | ||
860 | GNUNET_break_op (0); | ||
861 | return GNUNET_SYSERR; | ||
862 | } | ||
863 | /* check for duplicates */ | ||
864 | for (a = builder->a_head; | ||
865 | NULL != a; | ||
866 | a = a->next) | ||
867 | if (0 == strcmp (address, | ||
868 | a->uri)) | ||
869 | return GNUNET_NO; | ||
870 | a = GNUNET_malloc (sizeof (struct Address) + alen); | ||
871 | a->uri_len = alen; | ||
872 | memcpy (&a[1], | ||
873 | address, | ||
874 | alen); | ||
875 | a->uri = (const char *) &a[1]; | ||
876 | GNUNET_CONTAINER_DLL_insert_tail (builder->a_head, | ||
877 | builder->a_tail, | ||
878 | a); | ||
879 | builder->a_length++; | ||
880 | return GNUNET_OK; | ||
881 | } | ||
882 | |||
883 | |||
884 | enum GNUNET_GenericReturnValue | ||
885 | GNUNET_HELLO_builder_del_address (struct GNUNET_HELLO_Builder *builder, | ||
886 | const char *address) | ||
887 | { | ||
888 | struct Address *a; | ||
889 | |||
890 | /* check for duplicates */ | ||
891 | for (a = builder->a_head; | ||
892 | NULL != a; | ||
893 | a = a->next) | ||
894 | if (0 == strcmp (address, | ||
895 | a->uri)) | ||
896 | break; | ||
897 | if (NULL == a) | ||
898 | return GNUNET_NO; | ||
899 | GNUNET_CONTAINER_DLL_remove (builder->a_head, | ||
900 | builder->a_tail, | ||
901 | a); | ||
902 | builder->a_length--; | ||
903 | GNUNET_free (a); | ||
904 | return GNUNET_OK; | ||
905 | } | ||
906 | |||
907 | |||
908 | const struct GNUNET_PeerIdentity* | ||
909 | GNUNET_HELLO_builder_iterate (const struct GNUNET_HELLO_Builder *builder, | ||
910 | GNUNET_HELLO_UriCallback uc, | ||
911 | void *uc_cls) | ||
912 | { | ||
913 | struct Address *nxt; | ||
914 | |||
915 | if (NULL == uc) | ||
916 | return &builder->pid; | ||
917 | for (struct Address *a = builder->a_head; | ||
918 | NULL != a; | ||
919 | a = nxt) | ||
920 | { | ||
921 | nxt = a->next; | ||
922 | uc (uc_cls, | ||
923 | &builder->pid, | ||
924 | a->uri); | ||
925 | } | ||
926 | return &builder->pid; | ||
927 | } | ||
928 | |||
929 | |||
930 | enum GNUNET_GenericReturnValue | ||
931 | GNUNET_HELLO_dht_msg_to_block (const struct GNUNET_MessageHeader *hello, | ||
932 | const struct GNUNET_PeerIdentity *pid, | ||
933 | void **block, | ||
934 | size_t *block_size, | ||
935 | struct GNUNET_TIME_Absolute *block_expiration) | ||
936 | { | ||
937 | const struct DhtHelloMessage *msg | ||
938 | = (const struct DhtHelloMessage *) hello; | ||
939 | uint16_t len = ntohs (hello->size); | ||
940 | struct BlockHeader *bh; | ||
941 | struct GNUNET_HELLO_Builder *b; | ||
942 | enum GNUNET_GenericReturnValue ret; | ||
943 | |||
944 | if (GNUNET_MESSAGE_TYPE_DHT_P2P_HELLO != ntohs (hello->type)) | ||
945 | { | ||
946 | GNUNET_break (0); | ||
947 | return GNUNET_SYSERR; | ||
948 | } | ||
949 | if (len < sizeof (*msg)) | ||
950 | { | ||
951 | GNUNET_break_op (0); | ||
952 | return GNUNET_SYSERR; | ||
953 | } | ||
954 | len -= sizeof (*msg); | ||
955 | *block_size = len + sizeof (*bh); | ||
956 | *block = GNUNET_malloc (*block_size); | ||
957 | bh = *block; | ||
958 | bh->pid = *pid; | ||
959 | bh->sig = msg->sig; | ||
960 | bh->expiration_time = msg->expiration_time; | ||
961 | *block_expiration = GNUNET_TIME_absolute_ntoh (msg->expiration_time); | ||
962 | memcpy (&bh[1], | ||
963 | &msg[1], | ||
964 | len); | ||
965 | b = GNUNET_HELLO_builder_from_block (*block, | ||
966 | *block_size); | ||
967 | if (NULL == b) | ||
968 | { | ||
969 | GNUNET_break_op (0); | ||
970 | GNUNET_free (*block); | ||
971 | *block_size = 0; | ||
972 | return GNUNET_SYSERR; | ||
973 | } | ||
974 | ret = verify_hello (b, | ||
975 | *block_expiration, | ||
976 | &msg->sig); | ||
977 | GNUNET_HELLO_builder_free (b); | ||
978 | if (GNUNET_SYSERR == ret) | ||
979 | { | ||
980 | GNUNET_free (*block); | ||
981 | *block_size = 0; | ||
982 | return GNUNET_SYSERR; | ||
983 | } | ||
984 | return ret; | ||
985 | } | ||
986 | |||
987 | |||
988 | /** | ||
989 | * Given an address as a string, extract the prefix that identifies | ||
990 | * the communicator offering transmissions to that address. | ||
991 | * | ||
992 | * @param address a peer's address | ||
993 | * @return NULL if the address is mal-formed, otherwise the prefix | ||
994 | */ | ||
995 | char * | ||
996 | GNUNET_HELLO_address_to_prefix (const char *address) | ||
997 | { | ||
998 | const char *dash; | ||
999 | |||
1000 | dash = strchr (address, '-'); | ||
1001 | if (NULL == dash) | ||
1002 | return NULL; | ||
1003 | return GNUNET_strndup (address, dash - address); | ||
1004 | } | ||
1005 | |||
1006 | |||
1007 | /** | ||
1008 | * Build address record by signing raw information with private key. | ||
1009 | * | ||
1010 | * @param address text address at @a communicator to sign | ||
1011 | * @param nt network type of @a address | ||
1012 | * @param mono_time monotonic time at which @a address was valid | ||
1013 | * @param private_key signing key to use | ||
1014 | * @param[out] result where to write address record (allocated) | ||
1015 | * @param[out] result_size set to size of @a result | ||
1016 | */ | ||
1017 | void | ||
1018 | GNUNET_HELLO_sign_address ( | ||
1019 | const char *address, | ||
1020 | enum GNUNET_NetworkType nt, | ||
1021 | struct GNUNET_TIME_Absolute mono_time, | ||
1022 | const struct GNUNET_CRYPTO_EddsaPrivateKey *private_key, | ||
1023 | void **result, | ||
1024 | size_t *result_size) | ||
1025 | { | ||
1026 | struct SignedAddress sa; | ||
1027 | struct GNUNET_CRYPTO_EddsaSignature sig; | ||
1028 | char *sig_str; | ||
1029 | |||
1030 | sa.purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_TRANSPORT_ADDRESS); | ||
1031 | sa.purpose.size = htonl (sizeof(sa)); | ||
1032 | sa.mono_time = GNUNET_TIME_absolute_hton (mono_time); | ||
1033 | GNUNET_CRYPTO_hash (address, strlen (address), &sa.addr_hash); | ||
1034 | GNUNET_CRYPTO_eddsa_sign (private_key, &sa, &sig); | ||
1035 | sig_str = NULL; | ||
1036 | (void) GNUNET_STRINGS_base64_encode (&sig, sizeof(sig), &sig_str); | ||
1037 | *result_size = | ||
1038 | 1 + GNUNET_asprintf ((char **) result, | ||
1039 | "%s;%llu;%u;%s", | ||
1040 | sig_str, | ||
1041 | (unsigned long long) mono_time.abs_value_us, | ||
1042 | (unsigned int) nt, | ||
1043 | address); | ||
1044 | GNUNET_free (sig_str); | ||
1045 | } | ||
diff --git a/src/lib/hello/meson.build b/src/lib/hello/meson.build new file mode 100644 index 000000000..caf70e4a7 --- /dev/null +++ b/src/lib/hello/meson.build | |||
@@ -0,0 +1,27 @@ | |||
1 | libgnunethello_src = ['hello-uri.c'] | ||
2 | |||
3 | libgnunethello = library('gnunethello', | ||
4 | libgnunethello_src, | ||
5 | soversion: '0', | ||
6 | version: '0.1.0', | ||
7 | dependencies: libgnunetutil_dep, | ||
8 | include_directories: [incdir, configuration_inc], | ||
9 | install: true, | ||
10 | install_dir: get_option('libdir')) | ||
11 | libgnunethello_dep = declare_dependency(link_with : libgnunethello) | ||
12 | pkg.generate(libgnunethello, url: 'https://www.gnunet.org', | ||
13 | description : 'Helper library for handling GNUnet HELLO messages') | ||
14 | |||
15 | |||
16 | test_hello_uri = executable ('test_hello_uri', | ||
17 | ['test_hello-uri.c'], | ||
18 | dependencies: [libgnunethello_dep, | ||
19 | libgnunetutil_dep, | ||
20 | gcrypt_dep], | ||
21 | include_directories: [incdir, configuration_inc], | ||
22 | build_by_default: false, | ||
23 | install: false) | ||
24 | |||
25 | test('test_hello_uri', test_hello_uri, | ||
26 | workdir: meson.current_build_dir(), | ||
27 | suite: ['hello']) | ||
diff --git a/src/lib/hello/test_hello-uri.c b/src/lib/hello/test_hello-uri.c new file mode 100644 index 000000000..9f3179270 --- /dev/null +++ b/src/lib/hello/test_hello-uri.c | |||
@@ -0,0 +1,215 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2022 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | |||
18 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | /** | ||
21 | * @file hello/test_hello-uri.c | ||
22 | * @brief test for helper library for handling URI-based HELLOs | ||
23 | * @author Christian Grothoff | ||
24 | */ | ||
25 | #include "platform.h" | ||
26 | #include "gnunet_signatures.h" | ||
27 | #include "gnunet_util_lib.h" | ||
28 | #include "gnunet_hello_uri_lib.h" | ||
29 | |||
30 | |||
31 | /** | ||
32 | * Check for expected URIs. | ||
33 | * | ||
34 | * @param cls a `unsigned int*`, bitmask set to found URIs | ||
35 | * @param uri URI to check for | ||
36 | */ | ||
37 | static void | ||
38 | check_uris (void *cls, | ||
39 | const struct GNUNET_PeerIdentity *pid, | ||
40 | const char *uri) | ||
41 | { | ||
42 | unsigned int *found = cls; | ||
43 | |||
44 | if (0 == strcmp (uri, | ||
45 | "test://address")) | ||
46 | *found |= 1; | ||
47 | else if (0 == strcmp (uri, | ||
48 | "test://more")) | ||
49 | *found |= 2; | ||
50 | else | ||
51 | *found = (unsigned int) -1; | ||
52 | } | ||
53 | |||
54 | |||
55 | int | ||
56 | main (int argc, | ||
57 | char *argv[]) | ||
58 | { | ||
59 | struct GNUNET_PeerIdentity pid; | ||
60 | struct GNUNET_HELLO_Builder *b; | ||
61 | struct GNUNET_CRYPTO_EddsaPrivateKey priv; | ||
62 | |||
63 | GNUNET_log_setup ("test-hell-uri", | ||
64 | "WARNING", | ||
65 | NULL); | ||
66 | GNUNET_CRYPTO_eddsa_key_create (&priv); | ||
67 | GNUNET_CRYPTO_eddsa_key_get_public (&priv, | ||
68 | &pid.public_key); | ||
69 | b = GNUNET_HELLO_builder_new (&pid); | ||
70 | GNUNET_assert (GNUNET_SYSERR == | ||
71 | GNUNET_HELLO_builder_add_address (b, | ||
72 | "invalid")); | ||
73 | GNUNET_assert (GNUNET_SYSERR == | ||
74 | GNUNET_HELLO_builder_add_address (b, | ||
75 | "i%v://bla")); | ||
76 | GNUNET_assert (GNUNET_SYSERR == | ||
77 | GNUNET_HELLO_builder_add_address (b, | ||
78 | "://empty")); | ||
79 | GNUNET_assert (GNUNET_OK == | ||
80 | GNUNET_HELLO_builder_add_address (b, | ||
81 | "test://address")); | ||
82 | GNUNET_assert (GNUNET_NO == | ||
83 | GNUNET_HELLO_builder_add_address (b, | ||
84 | "test://address")); | ||
85 | GNUNET_assert (GNUNET_OK == | ||
86 | GNUNET_HELLO_builder_add_address (b, | ||
87 | "test://more")); | ||
88 | { | ||
89 | void *block; | ||
90 | size_t block_size = 0; | ||
91 | struct GNUNET_HELLO_Builder *b2; | ||
92 | const struct GNUNET_PeerIdentity *p2; | ||
93 | unsigned int found; | ||
94 | |||
95 | GNUNET_assert (GNUNET_NO == | ||
96 | GNUNET_HELLO_builder_to_block (b, | ||
97 | &priv, | ||
98 | NULL, | ||
99 | &block_size, | ||
100 | GNUNET_TIME_UNIT_FOREVER_REL)); | ||
101 | GNUNET_assert (GNUNET_NO == | ||
102 | GNUNET_HELLO_builder_to_block (b, | ||
103 | &priv, | ||
104 | NULL, | ||
105 | &block_size, | ||
106 | GNUNET_TIME_UNIT_FOREVER_REL)); | ||
107 | GNUNET_assert (0 != block_size); | ||
108 | block = GNUNET_malloc (block_size); | ||
109 | GNUNET_assert (GNUNET_OK == | ||
110 | GNUNET_HELLO_builder_to_block (b, | ||
111 | &priv, | ||
112 | block, | ||
113 | &block_size, | ||
114 | GNUNET_TIME_UNIT_FOREVER_REL)); | ||
115 | b2 = GNUNET_HELLO_builder_from_block (block, | ||
116 | block_size); | ||
117 | GNUNET_free (block); | ||
118 | GNUNET_assert (NULL != b2); | ||
119 | found = 0; | ||
120 | p2 = GNUNET_HELLO_builder_iterate (b2, | ||
121 | &check_uris, | ||
122 | &found); | ||
123 | GNUNET_assert (3 == found); | ||
124 | GNUNET_assert (0 == | ||
125 | GNUNET_memcmp (p2, | ||
126 | &pid)); | ||
127 | GNUNET_HELLO_builder_free (b2); | ||
128 | } | ||
129 | |||
130 | { | ||
131 | char *url; | ||
132 | struct GNUNET_HELLO_Builder *b2; | ||
133 | const struct GNUNET_PeerIdentity *p2; | ||
134 | unsigned int found; | ||
135 | |||
136 | url = GNUNET_HELLO_builder_to_url (b, | ||
137 | &priv); | ||
138 | b2 = GNUNET_HELLO_builder_from_url (url); | ||
139 | GNUNET_free (url); | ||
140 | GNUNET_assert (NULL != b2); | ||
141 | found = 0; | ||
142 | p2 = GNUNET_HELLO_builder_iterate (b2, | ||
143 | &check_uris, | ||
144 | &found); | ||
145 | GNUNET_assert (3 == found); | ||
146 | GNUNET_assert (0 == | ||
147 | GNUNET_memcmp (p2, | ||
148 | &pid)); | ||
149 | GNUNET_HELLO_builder_free (b2); | ||
150 | } | ||
151 | |||
152 | { | ||
153 | struct GNUNET_MQ_Envelope *env; | ||
154 | struct GNUNET_HELLO_Builder *b2; | ||
155 | const struct GNUNET_PeerIdentity *p2; | ||
156 | unsigned int found; | ||
157 | |||
158 | env = GNUNET_HELLO_builder_to_env (b, | ||
159 | &priv, | ||
160 | GNUNET_TIME_UNIT_FOREVER_REL); | ||
161 | b2 = GNUNET_HELLO_builder_from_msg (GNUNET_MQ_env_get_msg (env)); | ||
162 | GNUNET_free (env); | ||
163 | GNUNET_assert (NULL != b2); | ||
164 | found = 0; | ||
165 | p2 = GNUNET_HELLO_builder_iterate (b2, | ||
166 | &check_uris, | ||
167 | &found); | ||
168 | GNUNET_assert (3 == found); | ||
169 | GNUNET_assert (0 == | ||
170 | GNUNET_memcmp (p2, | ||
171 | &pid)); | ||
172 | GNUNET_HELLO_builder_free (b2); | ||
173 | } | ||
174 | |||
175 | GNUNET_HELLO_builder_free (b); | ||
176 | |||
177 | GNUNET_CRYPTO_mpi_print_unsigned (priv.d, | ||
178 | sizeof (priv.d), | ||
179 | GCRYMPI_CONST_ONE); | ||
180 | priv.d[0] &= 248; | ||
181 | priv.d[31] &= 127; | ||
182 | priv.d[31] |= 64; | ||
183 | { | ||
184 | char *buf; | ||
185 | |||
186 | buf = GNUNET_STRINGS_data_to_string_alloc (&priv, | ||
187 | sizeof (priv)); | ||
188 | fprintf (stderr, | ||
189 | "PK: %s\n", | ||
190 | buf); | ||
191 | GNUNET_free (buf); | ||
192 | } | ||
193 | GNUNET_CRYPTO_eddsa_key_get_public (&priv, | ||
194 | &pid.public_key); | ||
195 | b = GNUNET_HELLO_builder_new (&pid); | ||
196 | GNUNET_assert (GNUNET_OK == | ||
197 | GNUNET_HELLO_builder_add_address (b, | ||
198 | "a://first")); | ||
199 | GNUNET_assert (GNUNET_OK == | ||
200 | GNUNET_HELLO_builder_add_address (b, | ||
201 | "b://second")); | ||
202 | { | ||
203 | char *url; | ||
204 | |||
205 | url = GNUNET_HELLO_builder_to_url (b, | ||
206 | &priv); | ||
207 | fprintf (stderr, | ||
208 | "TV: %s\n", | ||
209 | url); | ||
210 | GNUNET_free (url); | ||
211 | } | ||
212 | GNUNET_HELLO_builder_free (b); | ||
213 | |||
214 | return 0; | ||
215 | } | ||