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/*******************************************************************************
* libproxy - A library for proxy configuration
* Copyright (C) 2006 Nathaniel McCallum <nathaniel@natemccallum.com>
* Copyright (C) 2008 Dominique Leuenberger <dominique-libproxy@leuenberger.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
******************************************************************************/
#include "proxy.h"
#include "curl/curl.h"
#include <string.h>
#include <stdlib.h>
int main(int argc, char * argv[]) {
pxProxyFactory *pf = NULL;
CURL *curl = NULL;
CURLcode result = 1;
/* Check if we have a parameter passed, otherwise bail out... I need one */
if (argc < 2)
{
printf("libcurl / libproxy example implementation\n");
printf("=========================================\n");
printf("The program has to be started with one parameter\n");
printf("Defining the URL that should be downloaded\n\n");
printf("Example: %s http://code.google.com/p/libproxy/\n", argv[0]);
return -1;
}
/* Initializing curl... has to happen exactly once in the program */
if (curl_global_init( CURL_GLOBAL_ALL )) return -4;
/* Create pxProxyFactory object */
if (!(pf = px_proxy_factory_new()))
{
printf("Unable to create pxProxyFactory object!\n");
curl_global_cleanup();
return -2;
}
/* Create curl handle */
if (!(curl = curl_easy_init()))
{
printf("Unable to get libcurl handle!\n");
px_proxy_factory_free(pf);
curl_global_cleanup();
return -3;
}
/* Get the array of proxies to try */
char **proxies = px_proxy_factory_get_proxies(pf, argv[1]);
/* Set the URL into the curl handle */
curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
/* Try to fetch our url using each proxy */
for (int i=0 ; proxies[i] ; i++)
{
if (result != 0)
{
/* Setup our proxy's config into curl */
curl_easy_setopt(curl, CURLOPT_PROXY, proxies[i]);
/* HTTP Proxy */
if (!strncmp("http", proxies[i], 4))
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
/* SOCKS Proxy, is this correct??? */
/* What about SOCKS 4A, 5 and 5_HOSTNAME??? */
else if (!strncmp("socks", proxies[i], 4))
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
/* Attempt to fetch the page */
result = curl_easy_perform(curl);
}
/* If we reached the end of the proxies array and still did not
succeed to conntect, let's inform the user that we failed. */
if (proxies[i+1] == NULL && result != 0)
printf ("The requested URL (%s) could not be retrieved using the current setup\n", argv[1]);
}
/* Free the proxy array */
px_proxy_factory_free_proxies(proxies);
/* Free the curl and libproxy handles */
px_proxy_factory_free(pf);
curl_easy_cleanup(curl);
/* Cleanup the libcurl library */
curl_global_cleanup();
return 0;
}
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