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- /*
- This file is part of GNUnet
- (C) 2007, 2009, 2011, 2012 Christian Grothoff
- 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 3, 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 test_gns_proxy.c
- * @brief testcase for accessing SOCKS5 GNS proxy
- * @author Martin Schanzenbach
- */
- #include "platform.h"
- #include <curl/curl.h>
- #include <microhttpd.h>
- #include "gnunet_namestore_service.h"
- #include "gnunet_gns_service.h"
- #include "gnunet_testing_lib.h"
- #include "gnunet_os_lib.h"
- #define PORT 8080
- #define TEST_DOMAIN "www.gnu"
- #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 300)
- /**
- * Return value for 'main'.
- */
- static int global_ret;
- static struct GNUNET_NAMESTORE_Handle *namestore;
- static struct MHD_Daemon *mhd;
- static GNUNET_SCHEDULER_TaskIdentifier mhd_task_id;
- static GNUNET_SCHEDULER_TaskIdentifier curl_task_id;
- static CURL *curl;
- static CURLM *multi;
- static char *url;
- static struct GNUNET_OS_Process *proxy_proc;
- static char* tmp_cfgfile;
- struct CBC
- {
- char buf[1024];
- size_t pos;
- };
- static struct CBC cbc;
- static size_t
- copy_buffer (void *ptr, size_t size, size_t nmemb, void *ctx)
- {
- struct CBC *cbc = ctx;
- if (cbc->pos + size * nmemb > sizeof(cbc->buf))
- return 0; /* overflow */
- memcpy (&cbc->buf[cbc->pos], ptr, size * nmemb);
- cbc->pos += size * nmemb;
- return size * nmemb;
- }
- static int
- mhd_ahc (void *cls,
- struct MHD_Connection *connection,
- const char *url,
- const char *method,
- const char *version,
- const char *upload_data, size_t *upload_data_size,
- void **unused)
- {
- static int ptr;
- struct MHD_Response *response;
- int ret;
- if (0 != strcmp ("GET", method))
- return MHD_NO; /* unexpected method */
- if (&ptr != *unused)
- {
- *unused = &ptr;
- return MHD_YES;
- }
- *unused = NULL;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "MHD sends respose for request to URL `%s'\n", url);
- response = MHD_create_response_from_buffer (strlen (url),
- (void *) url,
- MHD_RESPMEM_MUST_COPY);
- ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
- MHD_destroy_response (response);
- if (ret == MHD_NO)
- abort ();
- return ret;
- }
- static void
- do_shutdown ()
- {
- if (mhd_task_id != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (mhd_task_id);
- mhd_task_id = GNUNET_SCHEDULER_NO_TASK;
- }
- if (curl_task_id != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (curl_task_id);
- curl_task_id = GNUNET_SCHEDULER_NO_TASK;
- }
- if (NULL != mhd)
- {
- MHD_stop_daemon (mhd);
- mhd = NULL;
- }
- GNUNET_free_non_null (url);
- if (NULL != tmp_cfgfile)
- {
- if (0 != remove (tmp_cfgfile))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "remove", tmp_cfgfile);
- GNUNET_free (tmp_cfgfile);
- tmp_cfgfile = NULL;
- }
- if (NULL != proxy_proc)
- {
- (void) GNUNET_OS_process_kill (proxy_proc, SIGKILL);
- GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (proxy_proc));
- GNUNET_OS_process_destroy (proxy_proc);
- proxy_proc = NULL;
- }
- url = NULL;
- GNUNET_SCHEDULER_shutdown ();
- }
- /**
- * Function to run the HTTP client.
- */
- static void
- curl_main (void);
- static void
- curl_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- curl_task_id = GNUNET_SCHEDULER_NO_TASK;
- curl_main ();
- }
- static void
- curl_main ()
- {
- fd_set rs;
- fd_set ws;
- fd_set es;
- int max;
- struct GNUNET_NETWORK_FDSet nrs;
- struct GNUNET_NETWORK_FDSet nws;
- struct GNUNET_TIME_Relative delay;
- long timeout;
- int running;
- struct CURLMsg *msg;
- max = 0;
- FD_ZERO (&rs);
- FD_ZERO (&ws);
- FD_ZERO (&es);
- curl_multi_perform (multi, &running);
- if (running == 0)
- {
- GNUNET_assert (NULL != (msg = curl_multi_info_read (multi, &running)));
- if (msg->msg == CURLMSG_DONE)
- {
- if (msg->data.result != CURLE_OK)
- {
- fprintf (stderr,
- "%s failed at %s:%d: `%s'\n",
- "curl_multi_perform",
- __FILE__,
- __LINE__, curl_easy_strerror (msg->data.result));
- global_ret = 1;
- }
- }
- curl_multi_remove_handle (multi, curl);
- curl_multi_cleanup (multi);
- curl_easy_cleanup (curl);
- curl = NULL;
- multi = NULL;
- if (cbc.pos != strlen ("/hello_world"))
- {
- GNUNET_break (0);
- global_ret = 2;
- }
- if (0 != strncmp ("/hello_world", cbc.buf, strlen ("/hello_world")))
- {
- GNUNET_break (0);
- global_ret = 3;
- }
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Download complete, shutting down!\n");
- do_shutdown ();
- return;
- }
- GNUNET_assert (CURLM_OK == curl_multi_fdset (multi, &rs, &ws, &es, &max));
- if ( (CURLM_OK != curl_multi_timeout (multi, &timeout)) ||
- (-1 == timeout) )
- delay = GNUNET_TIME_UNIT_SECONDS;
- else
- delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, (unsigned int) timeout);
- GNUNET_NETWORK_fdset_copy_native (&nrs,
- &rs,
- max + 1);
- GNUNET_NETWORK_fdset_copy_native (&nws,
- &ws,
- max + 1);
- curl_task_id = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- delay,
- &nrs,
- &nws,
- &curl_task,
- NULL);
- }
- static void
- start_curl (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- GNUNET_asprintf (&url,
- "http://%s:%d/hello_world",
- TEST_DOMAIN, PORT);
- curl = curl_easy_init ();
- curl_easy_setopt (curl, CURLOPT_URL, url);
- curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, ©_buffer);
- curl_easy_setopt (curl, CURLOPT_WRITEDATA, &cbc);
- curl_easy_setopt (curl, CURLOPT_FAILONERROR, 1);
- curl_easy_setopt (curl, CURLOPT_TIMEOUT, 150L);
- curl_easy_setopt (curl, CURLOPT_CONNECTTIMEOUT, 15L);
- curl_easy_setopt (curl, CURLOPT_NOSIGNAL, 1);
- curl_easy_setopt (curl, CURLOPT_PROXY, "socks5h://127.0.0.1:7777");
- multi = curl_multi_init ();
- GNUNET_assert (multi != NULL);
- GNUNET_assert (CURLM_OK == curl_multi_add_handle (multi, curl));
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Beginning HTTP download from `%s'\n", url);
- curl_main ();
- }
- static void
- disco_ns (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- GNUNET_NAMESTORE_disconnect (namestore);
- }
- /**
- * Callback invoked from the namestore service once record is
- * created.
- *
- * @param cls closure
- * @param af address family, AF_INET or AF_INET6; AF_UNSPEC on error;
- * will match 'result_af' from the request
- * @param address IP address (struct in_addr or struct in_addr6, depending on 'af')
- * that the VPN allocated for the redirection;
- * traffic to this IP will now be redirected to the
- * specified target peer; NULL on error
- */
- static void
- commence_testing (void *cls, int32_t success, const char *emsg)
- {
- GNUNET_SCHEDULER_add_now (&disco_ns, NULL);
- if ((emsg != NULL) && (GNUNET_YES != success))
- {
- fprintf (stderr,
- "NS failed to create record %s\n", emsg);
- GNUNET_SCHEDULER_shutdown ();
- return;
- }
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1), start_curl, NULL);
- }
- /**
- * Function to keep the HTTP server running.
- */
- static void
- mhd_main (void);
- static void
- mhd_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- mhd_task_id = GNUNET_SCHEDULER_NO_TASK;
- MHD_run (mhd);
- mhd_main ();
- }
- static void
- mhd_main ()
- {
- struct GNUNET_NETWORK_FDSet nrs;
- struct GNUNET_NETWORK_FDSet nws;
- fd_set rs;
- fd_set ws;
- fd_set es;
- int max_fd;
- unsigned MHD_LONG_LONG timeout;
- struct GNUNET_TIME_Relative delay;
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == mhd_task_id);
- FD_ZERO (&rs);
- FD_ZERO (&ws);
- FD_ZERO (&es);
- max_fd = -1;
- GNUNET_assert (MHD_YES ==
- MHD_get_fdset (mhd, &rs, &ws, &es, &max_fd));
- if (MHD_YES == MHD_get_timeout (mhd, &timeout))
- delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS,
- (unsigned int) timeout);
- else
- delay = GNUNET_TIME_UNIT_FOREVER_REL;
- GNUNET_NETWORK_fdset_copy_native (&nrs,
- &rs,
- max_fd + 1);
- GNUNET_NETWORK_fdset_copy_native (&nws,
- &ws,
- max_fd + 1);
- mhd_task_id = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- delay,
- &nrs,
- &nws,
- &mhd_task,
- NULL);
- }
- static void
- run (void *cls,
- const struct GNUNET_CONFIGURATION_Handle *cfg,
- struct GNUNET_TESTING_Peer *peer)
- {
- enum MHD_FLAG flags;
- struct GNUNET_CRYPTO_EcdsaPrivateKey *host_key;
- struct GNUNET_GNSRECORD_Data rd;
- char *zone_keyfile;
- namestore = GNUNET_NAMESTORE_connect (cfg);
- GNUNET_assert (NULL != namestore);
- flags = MHD_USE_DEBUG;
- mhd = MHD_start_daemon (flags,
- PORT,
- NULL, NULL,
- &mhd_ahc, NULL,
- MHD_OPTION_END);
- GNUNET_assert (NULL != mhd);
- mhd_main ();
- tmp_cfgfile = GNUNET_DISK_mktemp ("test_gns_proxy_tmp.conf");
- if (NULL == tmp_cfgfile)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Failed to create tmp cfg!\n");
- do_shutdown ();
- return;
- }
- if (GNUNET_OK != GNUNET_CONFIGURATION_write ((struct GNUNET_CONFIGURATION_Handle *)cfg,
- tmp_cfgfile))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Failed to write tmp cfg\n");
- do_shutdown ();
- return;
- }
- proxy_proc = GNUNET_OS_start_process (GNUNET_NO,
- GNUNET_OS_INHERIT_STD_ALL,
- NULL,
- NULL,
- NULL,
- "gnunet-gns-proxy",
- "gnunet-gns-proxy",
- "-c", tmp_cfgfile, NULL);
- if (NULL == proxy_proc)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Unable to start proxy\n");
- do_shutdown ();
- return;
- }
- if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
- "ZONEKEY",
- &zone_keyfile))
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Failed to get key from cfg\n");
- return;
- }
- host_key = GNUNET_CRYPTO_ecdsa_key_create_from_file (zone_keyfile);
- rd.expiration_time = GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us;
- GNUNET_assert (GNUNET_OK == GNUNET_GNSRECORD_string_to_value (GNUNET_DNSPARSER_TYPE_A,
- "127.0.0.1",
- (void**)&rd.data,
- &rd.data_size));
- rd.record_type = GNUNET_DNSPARSER_TYPE_A;
- GNUNET_NAMESTORE_record_create (namestore,
- host_key,
- "www",
- &rd,
- &commence_testing,
- NULL);
- GNUNET_free ((void**)rd.data);
- GNUNET_free (zone_keyfile);
- GNUNET_free (host_key);
- }
- int
- main (int argc, char *const *argv)
- {
- char *binary;
- if (GNUNET_SYSERR == GNUNET_OS_check_helper_binary ("gnunet-gns-proxy", GNUNET_NO, NULL))
- {
- fprintf (stderr, "Proxy binary not in PATH... skipping!\n");
- return 0;
- }
- binary = GNUNET_OS_get_libexec_binary_path ("gnunet-helper-dns");
- if (GNUNET_YES != GNUNET_OS_check_helper_binary (binary, GNUNET_YES, NULL)) // TODO: once we have a windows-testcase, add test parameters here
- {
- fprintf (stderr, "DNS helper binary has wrong permissions... skipping!\n");
- GNUNET_free (binary);
- return 0;
- }
- GNUNET_free (binary);
- if (0 != curl_global_init (CURL_GLOBAL_WIN32))
- {
- fprintf (stderr, "failed to initialize curl\n");
- return 2;
- }
- if (0 != GNUNET_TESTING_peer_run ("test-gnunet-gns-proxy",
- "test_gns_proxy.conf",
- &run, NULL))
- return 1;
- GNUNET_DISK_directory_remove ("/tmp/gnunet-test-gns-proxy");
- return global_ret;
- }
- /* end of test_gns_vpn.c */
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