/*
- This file is part of GNUnet.
- (C) 2009 Christian Grothoff (and other contributing authors)
-
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2, or (at your
- option) any later version.
-
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
-*/
+ This file is part of GNUnet.
+ (C) 2009 Christian Grothoff (and other contributing authors)
+
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 2, or (at your
+ option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+ */
/**
* @file resolver/test_resolver_api.c
* @brief testcase for resolver_api.c
#define VERBOSE GNUNET_NO
+/**
+ * Using DNS root servers to check gnunet's resolver service
+ * a.root-servers.net <-> 198.41.0.4 is a fix 1:1 mapping that should not change over years
+ * For more information have a look at IANA's website http://www.root-servers.org/
+ */
+#define ROOTSERVER_NAME "a.root-servers.net"
+#define ROOTSERVER_IP "198.41.0.4"
static void
-check_hostname (void *cls, const struct sockaddr *sa, socklen_t salen)
+check_hostname(void *cls, const struct sockaddr *sa, socklen_t salen)
{
int *ok = cls;
(*ok) &= ~8;
return;
}
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _("Got IP address `%s' for our host.\n"),
- GNUNET_a2s (sa, salen));
+ GNUNET_log(GNUNET_ERROR_TYPE_INFO, _("Got IP address `%s' for our host.\n"),
+ GNUNET_a2s(sa, salen));
}
-
static void
-check_localhost_num (void *cls, const char *hostname)
+check_localhost_num(void *cls, const char *hostname)
{
int *ok = cls;
if (hostname == NULL)
return;
- if (0 == strcmp (hostname, "127.0.0.1"))
+ if (0 == strcmp(hostname, "127.0.0.1"))
{
#if DEBUG_RESOLVER
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received correct hostname `%s'.\n", hostname);
+ "Received correct hostname `%s'.\n", hostname);
#endif
(*ok) &= ~4;
}
{
#if DEBUG_RESOLVER
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received invalid hostname `%s'.\n", hostname);
+ "Received invalid hostname `%s'.\n", hostname);
#endif
- GNUNET_break (0);
+ GNUNET_break(0);
}
}
static void
-check_localhost (void *cls, const char *hostname)
+check_localhost(void *cls, const char *hostname)
{
int *ok = cls;
if (hostname == NULL)
return;
- if (0 == strcmp (hostname, "localhost"))
+ if (0 == strcmp(hostname, "localhost"))
{
#if DEBUG_RESOLVER
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received correct hostname `%s'.\n", hostname);
+ "Received correct hostname `%s'.\n", hostname);
#endif
(*ok) &= ~2;
}
{
#if DEBUG_RESOLVER
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received invalid hostname `%s'.\n", hostname);
+ "Received invalid hostname `%s'.\n", hostname);
#endif
- GNUNET_break (0);
+ GNUNET_break(0);
}
}
static void
-check_127 (void *cls, const struct sockaddr *sa, socklen_t salen)
+check_127(void *cls, const struct sockaddr *sa, socklen_t salen)
{
int *ok = cls;
const struct sockaddr_in *sai = (const struct sockaddr_in *) sa;
if (sa == NULL)
return;
- GNUNET_assert (sizeof (struct sockaddr_in) == salen);
- if (sai->sin_addr.s_addr == htonl (INADDR_LOOPBACK))
+ GNUNET_assert(sizeof(struct sockaddr_in) == salen);
+ if (sai->sin_addr.s_addr == htonl(INADDR_LOOPBACK))
{
#if DEBUG_RESOLVER
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received correct address.\n");
#if DEBUG_RESOLVER
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received incorrect address.\n");
#endif
- GNUNET_break (0);
+ GNUNET_break(0);
}
}
static void
-run (void *cls,
- struct GNUNET_SCHEDULER_Handle *sched,
- char *const *args,
- const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
+check_rootserver_ip(void *cls, const struct sockaddr *sa, socklen_t salen)
+{
+ int *ok = cls;
+ const struct sockaddr_in *sai = (const struct sockaddr_in *) sa;
+
+ if (sa == NULL)
+ return;
+ GNUNET_assert(sizeof(struct sockaddr_in) == salen);
+
+ if (0 == strcmp(inet_ntoa(sai->sin_addr), ROOTSERVER_IP))
+ {
+#if DEBUG_RESOLVER
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received correct rootserver ip address.\n");
+#endif
+ (*ok) &= ~1;
+ }
+ else
+ {
+#if DEBUG_RESOLVER
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received incorrect rootserver ip address.\n");
+#endif
+ GNUNET_break(0);
+ }
+}
+
+static void
+check_rootserver_name(void *cls, const char *hostname)
+{
+ int *ok = cls;
+ if (hostname == NULL)
+ return;
+
+ if (0 == strcmp(hostname, ROOTSERVER_NAME))
+ {
+#if DEBUG_RESOLVER
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received correct rootserver hostname `%s'.\n", hostname);
+#endif
+ (*ok) &= ~2;
+ }
+ else
+ {
+#if DEBUG_RESOLVER
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received invalid rootserver hostname `%s'.\n", hostname);
+#endif
+ GNUNET_break(0);
+ }
+}
+
+static void
+run(void *cls, struct GNUNET_SCHEDULER_Handle *sched, char * const *args,
+ const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
{
struct sockaddr_in sa;
- struct GNUNET_TIME_Relative timeout =
- GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS,
- 2500);
- memset (&sa, 0, sizeof (sa));
+ struct GNUNET_TIME_Relative timeout = GNUNET_TIME_relative_multiply(
+ GNUNET_TIME_UNIT_MILLISECONDS, 2500);
+ int count_ips = 0;
+
+ memset(&sa, 0, sizeof(sa));
+ sa.sin_family = AF_INET;
+ sa.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+ GNUNET_RESOLVER_ip_get(sched, cfg, "localhost", AF_INET, timeout, &check_127,
+ cls);
+ GNUNET_RESOLVER_hostname_get(sched, cfg, (const struct sockaddr *) &sa,
+ sizeof(struct sockaddr), GNUNET_YES, timeout, &check_localhost, cls);
+ GNUNET_RESOLVER_hostname_get(sched, cfg, (const struct sockaddr *) &sa,
+ sizeof(struct sockaddr), GNUNET_NO, timeout, &check_localhost_num, cls);
+ GNUNET_RESOLVER_hostname_resolve(sched, cfg, AF_UNSPEC, timeout,
+ &check_hostname, cls);
+ /*
+ * Testing non-local DNS resolution
+ * DNS rootserver to test: a.root-servers.net - 198.41.0.4
+ */
+
+ char const * rootserver_name = ROOTSERVER_NAME;
+ struct hostent *rootserver;
+
+ rootserver = gethostbyname(rootserver_name);
+ if (rootserver == NULL)
+ {
+ /* Error: resolving ip addresses does not work */
+#if DEBUG_RESOLVER
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("gethostbyname() could not lookup IP address: %s\n"),
+ hstrerror (h_errno));
+#endif
+ GNUNET_break(0);
+ return;
+ }
+
+ /* Counting returned IP addresses */
+ while (rootserver->h_addr_list[count_ips] != NULL)
+ count_ips++;
+ if (count_ips > 1)
+ {
+#if DEBUG_RESOLVER
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "IP received range for root name server, but a root name server has only 1 IP\n");
+#endif
+ GNUNET_break(0);
+ }
+
+ /* Comparing to resolved address to the address the root name server should have */
+ if (strcmp(inet_ntoa(*(struct in_addr *) rootserver->h_addr_list[0]),
+ ROOTSERVER_IP) != 0)
+ {
+#if DEBUG_RESOLVER
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "IP received and IP for root name server differ\n");
+#endif
+ GNUNET_break(0);
+ }
+#if DEBUG_RESOLVER
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "System's own forward name resolution is working\n");
+#endif
+
+ /* Resolve the same using GNUNET */
+ GNUNET_RESOLVER_ip_get(sched, cfg, ROOTSERVER_NAME, AF_INET, timeout,
+ &check_rootserver_ip, cls);
+
+ /*
+ * Success: forward lookups work as expected
+ * Next step: reverse lookups
+ */
+
+ struct in_addr rootserver_addr;
+ rootserver->h_name = "";
+ if (1 != inet_pton(AF_INET, ROOTSERVER_IP, &rootserver_addr))
+ {
+#if DEBUG_RESOLVER
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Could not transform root name server IP address\n");
+#endif
+ GNUNET_break(0);
+ }
+
+ rootserver
+ = gethostbyaddr(&rootserver_addr, sizeof(rootserver_addr), AF_INET);
+ if (rootserver == NULL)
+ {
+ /* Error: resolving ip addresses does not work */
+#if DEBUG_RESOLVER
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("gethostbyaddr() could not lookup hostname: %s\n"),
+ hstrerror (h_errno));
+#endif
+ GNUNET_break(0);
+ }
+
+ if (0 != strcmp(rootserver->h_name, ROOTSERVER_NAME))
+ {
+#if DEBUG_RESOLVER
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received hostname and hostname for root name server differ\n");
+#endif
+ GNUNET_break(0);
+ }
+
+#if DEBUG_RESOLVER
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "System's own reverse name resolution is working\n");
+#endif
+ /* Resolve the same using GNUNET */
+
+ memset(&sa, 0, sizeof(sa));
sa.sin_family = AF_INET;
- sa.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
- GNUNET_RESOLVER_ip_get (sched,
- cfg,
- "localhost", AF_INET, timeout, &check_127, cls);
- GNUNET_RESOLVER_hostname_get (sched,
- cfg,
- (const struct sockaddr *) &sa,
- sizeof (struct sockaddr),
- GNUNET_YES, timeout, &check_localhost, cls);
- GNUNET_RESOLVER_hostname_get (sched,
- cfg,
- (const struct sockaddr *) &sa,
- sizeof (struct sockaddr),
- GNUNET_NO,
- timeout, &check_localhost_num, cls);
- GNUNET_RESOLVER_hostname_resolve (sched,
- cfg,
- AF_UNSPEC, timeout, &check_hostname, cls);
+ inet_aton(ROOTSERVER_IP, &sa.sin_addr);
+
+ GNUNET_RESOLVER_hostname_get(sched, cfg, (const struct sockaddr *) &sa,
+ sizeof(struct sockaddr), GNUNET_YES, timeout, &check_rootserver_name, cls);
}
static int
-check ()
+check()
{
int ok = 1 + 2 + 4 + 8;
char *fn;
char *pfx;
pid_t pid;
- char *const argv[] = { "test-resolver-api",
- "-c",
- "test_resolver_api_data.conf",
+ char * const argv[] =
+ { "test-resolver-api", "-c", "test_resolver_api_data.conf",
#if VERBOSE
- "-L", "DEBUG",
+ "-L", "DEBUG",
#endif
- NULL
- };
- struct GNUNET_GETOPT_CommandLineOption options[] = {
- GNUNET_GETOPT_OPTION_END
- };
+ NULL };
+ struct GNUNET_GETOPT_CommandLineOption options[] =
+ { GNUNET_GETOPT_OPTION_END };
pfx = GNUNET_OS_installation_get_path(GNUNET_OS_IPK_BINDIR);
- GNUNET_asprintf(&fn, "%s%cgnunet-service-resolver",
- pfx,
- DIR_SEPARATOR);
- GNUNET_free (pfx);
- pid = GNUNET_OS_start_process (fn,
- "gnunet-service-resolver",
+ GNUNET_asprintf(&fn, "%s%cgnunet-service-resolver", pfx, DIR_SEPARATOR);
+ GNUNET_free(pfx);
+ pid = GNUNET_OS_start_process(NULL, NULL, fn, "gnunet-service-resolver",
#if VERBOSE
- "-L", "DEBUG",
+ "-L", "DEBUG",
#endif
- "-c", "test_resolver_api_data.conf", NULL);
- GNUNET_free (fn);
- GNUNET_assert (GNUNET_OK == GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
- argv, "test-resolver-api", "nohelp",
- options, &run, &ok));
- if (0 != PLIBC_KILL (pid, SIGTERM))
+ "-c", "test_resolver_api_data.conf", NULL);
+ GNUNET_free(fn);
+ GNUNET_assert(GNUNET_OK == GNUNET_PROGRAM_run((sizeof(argv) / sizeof(char *))
+ - 1, argv, "test-resolver-api", "nohelp", options, &run, &ok));
+ if (0 != PLIBC_KILL(pid, SIGTERM))
{
- GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "kill");
+ GNUNET_log_strerror(GNUNET_ERROR_TYPE_WARNING, "kill");
ok = 1;
}
- GNUNET_OS_process_wait (pid);
+ GNUNET_OS_process_wait(pid);
if (ok != 0)
- fprintf (stderr, "Missed some resolutions: %u\n", ok);
+ fprintf(stderr, "Missed some resolutions: %u\n", ok);
return ok;
}
int
-main (int argc, char *argv[])
+main(int argc, char *argv[])
{
int ret;
- GNUNET_log_setup ("test-resolver-api",
+ GNUNET_log_setup("test-resolver-api",
#if VERBOSE
- "DEBUG",
+ "DEBUG",
#else
- "WARNING",
+ "WARNING",
#endif
- NULL);
- ret = check ();
+ NULL);
+ ret = check();
return ret;
}
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