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/******************************************************************************
* Warmux is a convivial mass murder game.
* Copyright (C) 2001-2011 Warmux Team.
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
******************************************************************************
* Download a file using libcurl
*****************************************************************************/
#include <curl/curl.h>
#include <sys/types.h>
#include <unistd.h>
#include <WSERVER_debug.h>
#include <WSERVER_index_msg.h>
#include "download.h"
#include "config.h"
class Downloader
{
CURL* curl;
public:
Downloader();
~Downloader();
// Return true if the download was successful
bool Get(const char* url, const char* save_as);
};
Downloader::Downloader()
{
curl = curl_easy_init();
}
Downloader::~Downloader()
{
curl_easy_cleanup(curl);
}
size_t download_callback(void* buf, size_t size, size_t nmemb, void* fd)
{
return fwrite(buf, size, nmemb, (FILE*)fd);
}
bool Downloader::Get(const char* url, const char* save_as)
{
FILE* fd = fopen( save_as, "w");
curl_easy_setopt(curl, CURLOPT_FILE, fd);
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, download_callback);
CURLcode r = curl_easy_perform(curl);
fclose(fd);
return (r == CURLE_OK);
}
void DownloadServerList()
{
// Download the server list from warmux.org
// and contact every server
const std::string server_fn = "./server_list";
int gid, uid;
bool chroot;
bool do_fork = true;
pid_t child = 0;
config.Get("chroot", chroot);
config.Get("chroot_gid", gid);
config.Get("chroot_uid", uid);
Downloader dl;
DPRINT(CONN, "Forking process to download the server list");
do
{
const std::string server_fn = "./server_list";
dl.Get( server_list_url.c_str(), server_fn.c_str() );
if(chroot)
{
if(chown(server_fn.c_str(), (uid_t)uid, (gid_t)gid) == -1)
PRINT_FATAL_ERROR;
}
if(do_fork)
{
do_fork = false;
child = fork();
if( child == -1)
PRINT_FATAL_ERROR
else
if(child == 0)
break;
}
// Wait 1 day
sleep(60 * 60 * 24);
}
while(child != 0);
}
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