/*
This file is part of GNUnet
Copyright (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 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 .
*/
/**
* @file test_gns_proxy.c
* @brief testcase for accessing SOCKS5 GNS proxy
* @author Martin Schanzenbach
*/
#include "platform.h"
#if HAVE_CURL_CURL_H
#include
#elif HAVE_GNURL_CURL_H
#include
#endif
#include
#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 struct GNUNET_SCHEDULER_Task * mhd_task_id;
static struct GNUNET_SCHEDULER_Task * 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 */
GNUNET_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 != NULL)
{
GNUNET_SCHEDULER_cancel (mhd_task_id);
mhd_task_id = NULL;
}
if (curl_task_id != NULL)
{
GNUNET_SCHEDULER_cancel (curl_task_id);
curl_task_id = NULL;
}
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)
{
curl_task_id = NULL;
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)
{
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)
{
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;
}
curl_task_id =
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
&start_curl, NULL);
}
/**
* Function to keep the HTTP server running.
*/
static void
mhd_main (void);
static void
mhd_task (void *cls)
{
mhd_task_id = NULL;
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 (NULL == 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 */