2 This file is part of GNUnet.
3 (C) 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
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 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
21 * @file resolver/test_resolver_api.c
22 * @brief testcase for resolver_api.c
25 #include "gnunet_common.h"
26 #include "gnunet_getopt_lib.h"
27 #include "gnunet_os_lib.h"
28 #include "gnunet_program_lib.h"
29 #include "gnunet_scheduler_lib.h"
30 #include "gnunet_resolver_service.h"
33 #define VERBOSE GNUNET_NO
36 * Using DNS root servers to check gnunet's resolver service
37 * a.root-servers.net <-> 198.41.0.4 is a fix 1:1 mapping that should not change over years
38 * For more information have a look at IANA's website http://www.root-servers.org/
40 #define ROOTSERVER_NAME "a.root-servers.net"
41 #define ROOTSERVER_IP "198.41.0.4"
44 check_hostname(void *cls, const struct sockaddr *sa, socklen_t salen)
53 GNUNET_log(GNUNET_ERROR_TYPE_INFO, _("Got IP address `%s' for our host.\n"),
54 GNUNET_a2s(sa, salen));
58 check_localhost_num(void *cls, const char *hostname)
63 if (0 == strcmp(hostname, "127.0.0.1"))
66 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
67 "Received correct hostname `%s'.\n", hostname);
74 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
75 "Received invalid hostname `%s'.\n", hostname);
82 check_localhost(void *cls, const char *hostname)
87 if (0 == strcmp(hostname, "localhost"))
90 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
91 "Received correct hostname `%s'.\n", hostname);
98 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
99 "Received invalid hostname `%s'.\n", hostname);
106 check_127(void *cls, const struct sockaddr *sa, socklen_t salen)
109 const struct sockaddr_in *sai = (const struct sockaddr_in *) sa;
113 GNUNET_assert(sizeof(struct sockaddr_in) == salen);
114 if (sai->sin_addr.s_addr == htonl(INADDR_LOOPBACK))
117 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received correct address.\n");
124 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received incorrect address.\n");
131 check_local_fqdn(void *cls, const char *gnunet_fqdn)
135 struct hostent *host;
136 char hostname[GNUNET_OS_get_hostname_max_length() + 1];
138 if (0 != gethostname (hostname, sizeof (hostname) - 1))
140 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR |
141 GNUNET_ERROR_TYPE_BULK, "gethostname");
145 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
146 _("Resolving our FQDN `%s'\n"), hostname);
148 host = gethostbyname ( hostname );
151 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
152 _("Could not resolve our FQDN : %s %u\n"),
153 hstrerror (h_errno), h_errno);
157 GNUNET_assert( 0 != host);
159 result = strcmp(host->h_name, gnunet_fqdn);
162 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
163 "Local resolved and resolver resolved fqdns are not equal\n");
165 GNUNET_assert( 0 == result);
169 check_local_hostname(void *cls, const char *hostname)
173 char own_hostname[GNUNET_OS_get_hostname_max_length() + 1];
175 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
176 "Hostname resolved here is `%s'.\n", own_hostname);
177 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
178 "Hostname resolved using resolver is `%s'.\n", hostname);
181 result = gethostname (own_hostname, sizeof (own_hostname) - 1);
185 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
186 "Could not resolve local hostname\n", own_hostname);
188 GNUNET_assert( 0 == result);
190 result = strcmp(hostname, own_hostname);
193 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
194 "Local resolved and resolver resolved hostnames are not equal\n", own_hostname);
196 GNUNET_assert( 0 == result);
201 check_rootserver_ip(void *cls, const struct sockaddr *sa, socklen_t salen)
204 const struct sockaddr_in *sai = (const struct sockaddr_in *) sa;
208 GNUNET_assert(sizeof(struct sockaddr_in) == salen);
210 if (0 == strcmp(inet_ntoa(sai->sin_addr), ROOTSERVER_IP))
213 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received correct rootserver ip address.\n");
220 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received incorrect rootserver ip address.\n");
227 check_rootserver_name(void *cls, const char *hostname)
230 if (hostname == NULL)
233 if (0 == strcmp(hostname, ROOTSERVER_NAME))
236 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
237 "Received correct rootserver hostname `%s'.\n", hostname);
244 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
245 "Received invalid rootserver hostname `%s'.\n", hostname);
252 run(void *cls, struct GNUNET_SCHEDULER_Handle *sched, char * const *args,
253 const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
255 struct sockaddr_in sa;
256 struct GNUNET_TIME_Relative timeout = GNUNET_TIME_relative_multiply(
257 GNUNET_TIME_UNIT_MILLISECONDS, 2500);
262 memset(&sa, 0, sizeof(sa));
263 sa.sin_family = AF_INET;
264 sa.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
265 GNUNET_RESOLVER_ip_get(sched, cfg, "localhost", AF_INET, timeout, &check_127,
267 GNUNET_RESOLVER_hostname_get(sched, cfg, (const struct sockaddr *) &sa,
268 sizeof(struct sockaddr), GNUNET_YES, timeout, &check_localhost, cls);
269 GNUNET_RESOLVER_hostname_get(sched, cfg, (const struct sockaddr *) &sa,
270 sizeof(struct sockaddr), GNUNET_NO, timeout, &check_localhost_num, cls);
271 GNUNET_RESOLVER_hostname_resolve(sched, cfg, AF_UNSPEC, timeout,
272 &check_hostname, cls);
275 * Looking up our own hostname
277 own_hostname = GNUNET_RESOLVER_local_hostname_get();
278 check_local_hostname( NULL, own_hostname);
279 GNUNET_free (own_hostname);
282 * Looking up our own fqdn
284 own_fqdn = GNUNET_RESOLVER_local_fqdn_get();
285 check_local_fqdn( NULL, own_fqdn);
286 GNUNET_free_non_null (own_fqdn);
289 * Testing non-local DNS resolution
290 * DNS rootserver to test: a.root-servers.net - 198.41.0.4
293 char const * rootserver_name = ROOTSERVER_NAME;
294 struct hostent *rootserver;
296 rootserver = gethostbyname(rootserver_name);
297 if (rootserver == NULL)
299 /* Error: resolving ip addresses does not work */
301 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
302 _("gethostbyname() could not lookup IP address: %s\n"),
303 hstrerror (h_errno));
309 /* Counting returned IP addresses */
310 while (rootserver->h_addr_list[count_ips] != NULL)
315 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "IP received range for root name server, but a root name server has only 1 IP\n");
320 /* Comparing to resolved address to the address the root name server should have */
321 if (strcmp(inet_ntoa(*(struct in_addr *) rootserver->h_addr_list[0]),
325 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "IP received and IP for root name server differ\n");
330 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "System's own forward name resolution is working\n");
333 /* Resolve the same using GNUNET */
334 GNUNET_RESOLVER_ip_get(sched, cfg, ROOTSERVER_NAME, AF_INET, timeout,
335 &check_rootserver_ip, cls);
338 * Success: forward lookups work as expected
339 * Next step: reverse lookups
342 struct in_addr rootserver_addr;
343 rootserver->h_name = "";
344 if (1 != inet_pton(AF_INET, ROOTSERVER_IP, &rootserver_addr))
347 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Could not transform root name server IP address\n");
353 = gethostbyaddr(&rootserver_addr, sizeof(rootserver_addr), AF_INET);
354 if (rootserver == NULL)
356 /* Error: resolving IP addresses does not work */
358 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
359 _("gethostbyaddr() could not lookup hostname: %s\n"),
360 hstrerror (h_errno));
366 if (0 != strcmp(rootserver->h_name, ROOTSERVER_NAME))
369 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received hostname and hostname for root name server differ\n");
376 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "System's own reverse name resolution is working\n");
378 /* Resolve the same using GNUNET */
380 memset(&sa, 0, sizeof(sa));
381 sa.sin_family = AF_INET;
383 inet_aton(ROOTSERVER_IP, &sa.sin_addr);
385 sa.sin_addr.S_un.S_addr = inet_addr(ROOTSERVER_IP);
387 GNUNET_RESOLVER_hostname_get(sched, cfg, (const struct sockaddr *) &sa,
388 sizeof(struct sockaddr), GNUNET_YES, timeout, &check_rootserver_name, cls);
394 int ok = 1 + 2 + 4 + 8;
398 char * const argv[] =
399 { "test-resolver-api", "-c", "test_resolver_api_data.conf",
404 struct GNUNET_GETOPT_CommandLineOption options[] =
405 { GNUNET_GETOPT_OPTION_END };
406 pfx = GNUNET_OS_installation_get_path(GNUNET_OS_IPK_BINDIR);
407 GNUNET_asprintf(&fn, "%s%cgnunet-service-resolver", pfx, DIR_SEPARATOR);
409 pid = GNUNET_OS_start_process(NULL, NULL, fn, "gnunet-service-resolver",
413 "-c", "test_resolver_api_data.conf", NULL);
415 GNUNET_assert(GNUNET_OK == GNUNET_PROGRAM_run((sizeof(argv) / sizeof(char *))
416 - 1, argv, "test-resolver-api", "nohelp", options, &run, &ok));
417 if (0 != PLIBC_KILL(pid, SIGTERM))
419 GNUNET_log_strerror(GNUNET_ERROR_TYPE_WARNING, "kill");
422 GNUNET_OS_process_wait(pid);
424 fprintf(stderr, "Missed some resolutions: %u\n", ok);
429 main(int argc, char *argv[])
433 GNUNET_log_setup("test-resolver-api",
445 /* end of test_resolver_api.c */