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- /*
- This file is part of GNUnet.
- Copyright (C) 2009 GNUnet e.V.
- GNUnet is free software: you can redistribute it and/or modify it
- under the terms of the GNU Affero General Public License as published
- by the Free Software Foundation, either version 3 of the License,
- 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
- Affero General Public License for more details.
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- SPDX-License-Identifier: AGPL3.0-or-later
- */
- /**
- * @file resolver/test_resolver_api.c
- * @brief testcase for resolver_api.c
- */
- #include "platform.h"
- #include "gnunet_util_lib.h"
- #include "gnunet_resolver_service.h"
- #include "resolver.h"
- static int disable_rootserver_check;
- /**
- * 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)
- {
- int *ok = cls;
- if (0 == salen)
- {
- (*ok) &= ~8;
- return;
- }
- 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)
- {
- int *ok = cls;
- if (hostname == NULL)
- return;
- if (0 == strcmp (hostname, "127.0.0.1"))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received correct hostname `%s'.\n",
- hostname);
- (*ok) &= ~4;
- }
- else
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Received invalid hostname `%s'.\n",
- hostname);
- GNUNET_break (0);
- }
- }
- static void
- check_localhost (void *cls,
- const char *hostname)
- {
- int *ok = cls;
- if (NULL == hostname)
- return;
- if (0 == strcmp (hostname, "localhost"))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received correct hostname `%s'.\n",
- hostname);
- (*ok) &= ~2;
- }
- else
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- "Received unexpected hostname `%s', expected `localhost' (this could be OK).\n",
- hostname);
- }
- }
- static void
- 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 (NULL == sa)
- return;
- GNUNET_assert (sizeof(struct sockaddr_in) == salen);
- if (sai->sin_addr.s_addr == htonl (INADDR_LOOPBACK))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received correct address.\n");
- (*ok) &= ~1;
- }
- else
- {
- char buf[INET_ADDRSTRLEN];
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Received incorrect address `%s'.\n",
- inet_ntop (AF_INET,
- &sai->sin_addr,
- buf,
- sizeof(buf)));
- GNUNET_break (0);
- }
- }
- static void
- 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 (NULL == sa)
- return;
- GNUNET_assert (sizeof(struct sockaddr_in) == salen);
- if (0 == strcmp (inet_ntoa (sai->sin_addr), ROOTSERVER_IP))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received correct rootserver ip address.\n");
- (*ok) &= ~1;
- }
- else
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received incorrect rootserver ip address.\n");
- GNUNET_break (0);
- }
- }
- static void
- check_rootserver_name (void *cls,
- const char *hostname)
- {
- int *ok = cls;
- if (NULL == hostname)
- return;
- if (0 == strcmp (hostname, ROOTSERVER_NAME))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received correct rootserver hostname `%s'.\n",
- hostname);
- (*ok) &= ~2;
- }
- else
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- "Received invalid rootserver hostname `%s', expected `%s'\n",
- hostname,
- ROOTSERVER_NAME);
- GNUNET_break (disable_rootserver_check);
- }
- }
- static void
- run (void *cls, char *const *args, const char *cfgfile,
- const struct GNUNET_CONFIGURATION_Handle *cfg)
- {
- int *ok = cls;
- struct sockaddr_in sa;
- struct GNUNET_TIME_Relative timeout =
- GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 30);
- int count_ips = 0;
- char *own_fqdn;
- const char *rootserver_name = ROOTSERVER_NAME;
- struct hostent *rootserver;
- struct in_addr rootserver_addr;
- memset (&sa, 0, sizeof(sa));
- sa.sin_family = AF_INET;
- #if HAVE_SOCKADDR_IN_SIN_LEN
- sa.sin_len = (u_char) sizeof(sa);
- #endif
- sa.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
- /*
- * Looking up our own fqdn
- */
- own_fqdn = GNUNET_RESOLVER_local_fqdn_get ();
- /* can't really check, only thing we can safely
- compare against is our own identical logic... */
- GNUNET_free_non_null (own_fqdn);
- /*
- * Testing non-local DNS resolution
- * DNS rootserver to test: a.root-servers.net - 198.41.0.4
- */
- rootserver = gethostbyname (rootserver_name);
- if (NULL == rootserver)
- {
- /* Error: resolving ip addresses does not work */
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("gethostbyname() could not lookup IP address: %s\n"),
- hstrerror (h_errno));
- fprintf (stderr,
- "%s",
- "System seems to be off-line, will not run all DNS tests\n");
- *ok = 0; /* mark test as passing anyway */
- return;
- }
- /* Counting returned IP addresses */
- while (NULL != rootserver->h_addr_list[count_ips])
- count_ips++;
- if (count_ips > 1)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "IP received range for root name server, but a root name server has only 1 IP\n");
- GNUNET_break (0);
- }
- /* Comparing to resolved address to the address the root name server should have */
- if (0 !=
- strcmp (inet_ntoa (*(struct in_addr *) rootserver->h_addr_list[0]),
- ROOTSERVER_IP))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "IP received and IP for root name server differ\n");
- GNUNET_break (0);
- }
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- "System's own forward name resolution is working\n");
- /* Resolve the same using GNUNET */
- GNUNET_RESOLVER_ip_get (ROOTSERVER_NAME, AF_INET, timeout,
- &check_rootserver_ip, cls);
- GNUNET_RESOLVER_ip_get (ROOTSERVER_NAME, AF_INET, timeout,
- &check_rootserver_ip, cls);
- /*
- * Success: forward lookups work as expected
- * Next step: reverse lookups
- */
- if (1 != inet_pton (AF_INET,
- ROOTSERVER_IP,
- &rootserver_addr))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Could not transform root name server IP address\n");
- GNUNET_break (0);
- }
- rootserver =
- gethostbyaddr ((const void *) &rootserver_addr,
- sizeof(rootserver_addr),
- AF_INET);
- if (NULL == rootserver)
- {
- /* Error: resolving IP addresses does not work */
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- "gethostbyaddr() could not lookup hostname: %s\n",
- hstrerror (h_errno));
- disable_rootserver_check = GNUNET_YES;
- }
- else
- {
- if (0 != strcmp (rootserver->h_name,
- ROOTSERVER_NAME))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- "Received hostname and hostname for root name server differ\n");
- disable_rootserver_check = GNUNET_YES;
- }
- }
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- "System's own reverse name resolution is working\n");
- /* Resolve the same using GNUNET */
- memset (&sa, 0, sizeof(sa));
- sa.sin_family = AF_INET;
- #if HAVE_SOCKADDR_IN_SIN_LEN
- sa.sin_len = (u_char) sizeof(sa);
- #endif
- inet_aton (ROOTSERVER_IP, &sa.sin_addr);
- GNUNET_RESOLVER_hostname_get ((const struct sockaddr *) &sa,
- sizeof(struct sockaddr), GNUNET_YES, timeout,
- &check_rootserver_name, cls);
- memset (&sa, 0, sizeof(sa));
- sa.sin_family = AF_INET;
- #if HAVE_SOCKADDR_IN_SIN_LEN
- sa.sin_len = (u_char) sizeof(sa);
- #endif
- sa.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
- GNUNET_RESOLVER_ip_get ("localhost", AF_INET, timeout, &check_127, cls);
- GNUNET_RESOLVER_hostname_get ((const struct sockaddr *) &sa,
- sizeof(struct sockaddr), GNUNET_YES, timeout,
- &check_localhost, cls);
- GNUNET_RESOLVER_hostname_get ((const struct sockaddr *) &sa,
- sizeof(struct sockaddr), GNUNET_NO, timeout,
- &check_localhost_num, cls);
- GNUNET_RESOLVER_hostname_resolve (AF_UNSPEC, timeout, &check_hostname, cls);
- }
- int
- main (int argc, char *argv[])
- {
- int ok = 1 + 2 + 4 + 8;
- char *fn;
- struct GNUNET_OS_Process *proc;
- char *const argvx[] = {
- "test-resolver-api", "-c", "test_resolver_api_data.conf", NULL
- };
- struct GNUNET_GETOPT_CommandLineOption options[] =
- { GNUNET_GETOPT_OPTION_END };
- GNUNET_log_setup ("test-resolver-api",
- "WARNING",
- NULL);
- fn = GNUNET_OS_get_libexec_binary_path ("gnunet-service-resolver");
- proc = GNUNET_OS_start_process (GNUNET_YES,
- GNUNET_OS_INHERIT_STD_OUT_AND_ERR,
- NULL, NULL, NULL,
- fn,
- "gnunet-service-resolver",
- "-c", "test_resolver_api_data.conf", NULL);
- GNUNET_assert (NULL != proc);
- GNUNET_free (fn);
- GNUNET_assert (GNUNET_OK ==
- GNUNET_PROGRAM_run ((sizeof(argvx) / sizeof(char *)) - 1,
- argvx, "test-resolver-api", "nohelp",
- options, &run, &ok));
- if (0 != GNUNET_OS_process_kill (proc, GNUNET_TERM_SIG))
- {
- GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "kill");
- ok = 1;
- }
- GNUNET_OS_process_wait (proc);
- GNUNET_OS_process_destroy (proc);
- proc = NULL;
- if (0 != ok)
- fprintf (stderr, "Missed some resolutions: %u\n", ok);
- return ok;
- }
- /* end of test_resolver_api.c */
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