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/*
===========================================================================
Copyright (C) 2006 Tony J. White (tjw@tjw.org)
Copyright (C) 2000-2009 Darklegion Development
This file is part of Tremulous.
Tremulous 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.
Tremulous 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 Tremulous; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
#ifdef USE_CURL
#include "client.h"
#ifdef USE_CURL_DLOPEN
#include "../sys/sys_loadlib.h"
cvar_t *cl_cURLLib;
char* (*qcurl_version)(void);
CURL* (*qcurl_easy_init)(void);
CURLcode (*qcurl_easy_setopt)(CURL *curl, CURLoption option, ...);
CURLcode (*qcurl_easy_perform)(CURL *curl);
void (*qcurl_easy_cleanup)(CURL *curl);
CURLcode (*qcurl_easy_getinfo)(CURL *curl, CURLINFO info, ...);
CURL* (*qcurl_easy_duphandle)(CURL *curl);
void (*qcurl_easy_reset)(CURL *curl);
const char *(*qcurl_easy_strerror)(CURLcode);
CURLM* (*qcurl_multi_init)(void);
CURLMcode (*qcurl_multi_add_handle)(CURLM *multi_handle,
CURL *curl_handle);
CURLMcode (*qcurl_multi_remove_handle)(CURLM *multi_handle,
CURL *curl_handle);
CURLMcode (*qcurl_multi_fdset)(CURLM *multi_handle,
fd_set *read_fd_set,
fd_set *write_fd_set,
fd_set *exc_fd_set,
int *max_fd);
CURLMcode (*qcurl_multi_perform)(CURLM *multi_handle,
int *running_handles);
CURLMcode (*qcurl_multi_cleanup)(CURLM *multi_handle);
CURLMsg *(*qcurl_multi_info_read)(CURLM *multi_handle,
int *msgs_in_queue);
const char *(*qcurl_multi_strerror)(CURLMcode);
static void *cURLLib = NULL;
/*
=================
GPA
=================
*/
static void *GPA(char *str)
{
void *rv;
rv = Sys_LoadFunction(cURLLib, str);
if(!rv)
{
Com_Printf("Can't load symbol %s\n", str);
clc.cURLEnabled = qfalse;
return NULL;
}
else
{
Com_DPrintf("Loaded symbol %s (0x%p)\n", str, rv);
return rv;
}
}
#endif /* USE_CURL_DLOPEN */
/*
=================
CL_cURL_Init
=================
*/
qboolean CL_cURL_Init()
{
#ifdef USE_CURL_DLOPEN
if(cURLLib)
return qtrue;
Com_Printf("Loading \"%s\"...", cl_cURLLib->string);
if(!(cURLLib = Sys_LoadDll(cl_cURLLib->string, qtrue)))
{
#ifdef ALTERNATE_CURL_LIB
// On some linux distributions there is no libcurl.so.3, but only libcurl.so.4. That one works too.
if(!(cURLLib = Sys_LoadDll(ALTERNATE_CURL_LIB, qtrue)))
#endif
return qfalse;
}
clc.cURLEnabled = qtrue;
qcurl_version = GPA("curl_version");
qcurl_easy_init = GPA("curl_easy_init");
qcurl_easy_setopt = GPA("curl_easy_setopt");
qcurl_easy_perform = GPA("curl_easy_perform");
qcurl_easy_cleanup = GPA("curl_easy_cleanup");
qcurl_easy_getinfo = GPA("curl_easy_getinfo");
qcurl_easy_duphandle = GPA("curl_easy_duphandle");
qcurl_easy_reset = GPA("curl_easy_reset");
qcurl_easy_strerror = GPA("curl_easy_strerror");
qcurl_multi_init = GPA("curl_multi_init");
qcurl_multi_add_handle = GPA("curl_multi_add_handle");
qcurl_multi_remove_handle = GPA("curl_multi_remove_handle");
qcurl_multi_fdset = GPA("curl_multi_fdset");
qcurl_multi_perform = GPA("curl_multi_perform");
qcurl_multi_cleanup = GPA("curl_multi_cleanup");
qcurl_multi_info_read = GPA("curl_multi_info_read");
qcurl_multi_strerror = GPA("curl_multi_strerror");
if(!clc.cURLEnabled)
{
CL_cURL_Shutdown();
Com_Printf("FAIL One or more symbols not found\n");
return qfalse;
}
Com_Printf("OK\n");
return qtrue;
#else
clc.cURLEnabled = qtrue;
return qtrue;
#endif /* USE_CURL_DLOPEN */
}
/*
=================
CL_cURL_Shutdown
=================
*/
void CL_cURL_Shutdown( void )
{
CL_cURL_Cleanup();
#ifdef USE_CURL_DLOPEN
if(cURLLib)
{
Sys_UnloadLibrary(cURLLib);
cURLLib = NULL;
}
qcurl_easy_init = NULL;
qcurl_easy_setopt = NULL;
qcurl_easy_perform = NULL;
qcurl_easy_cleanup = NULL;
qcurl_easy_getinfo = NULL;
qcurl_easy_duphandle = NULL;
qcurl_easy_reset = NULL;
qcurl_multi_init = NULL;
qcurl_multi_add_handle = NULL;
qcurl_multi_remove_handle = NULL;
qcurl_multi_fdset = NULL;
qcurl_multi_perform = NULL;
qcurl_multi_cleanup = NULL;
qcurl_multi_info_read = NULL;
qcurl_multi_strerror = NULL;
#endif /* USE_CURL_DLOPEN */
}
void CL_cURL_Cleanup(void)
{
if(clc.downloadCURLM) {
if(clc.downloadCURL) {
qcurl_multi_remove_handle(clc.downloadCURLM,
clc.downloadCURL);
qcurl_easy_cleanup(clc.downloadCURL);
}
qcurl_multi_cleanup(clc.downloadCURLM);
clc.downloadCURLM = NULL;
clc.downloadCURL = NULL;
}
else if(clc.downloadCURL) {
qcurl_easy_cleanup(clc.downloadCURL);
clc.downloadCURL = NULL;
}
}
static int CL_cURL_CallbackProgress( void *dummy, double dltotal, double dlnow,
double ultotal, double ulnow )
{
clc.downloadSize = (int)dltotal;
Cvar_SetValue( "cl_downloadSize", clc.downloadSize );
clc.downloadCount = (int)dlnow;
Cvar_SetValue( "cl_downloadCount", clc.downloadCount );
return 0;
}
static size_t CL_cURL_CallbackWrite(void *buffer, size_t size, size_t nmemb,
void *stream)
{
FS_Write( buffer, size*nmemb, ((fileHandle_t*)stream)[0] );
return size*nmemb;
}
void CL_cURL_BeginDownload( const char *localName, const char *remoteURL )
{
clc.cURLUsed = qtrue;
Com_Printf("URL: %s\n", remoteURL);
Com_DPrintf("***** CL_cURL_BeginDownload *****\n"
"Localname: %s\n"
"RemoteURL: %s\n"
"****************************\n", localName, remoteURL);
CL_cURL_Cleanup();
Q_strncpyz(clc.downloadURL, remoteURL, sizeof(clc.downloadURL));
Q_strncpyz(clc.downloadName, localName, sizeof(clc.downloadName));
Com_sprintf(clc.downloadTempName, sizeof(clc.downloadTempName),
"%s.tmp", localName);
// Set so UI gets access to it
Cvar_Set("cl_downloadName", localName);
Cvar_Set("cl_downloadSize", "0");
Cvar_Set("cl_downloadCount", "0");
Cvar_SetValue("cl_downloadTime", cls.realtime);
clc.downloadBlock = 0; // Starting new file
clc.downloadCount = 0;
clc.downloadCURL = qcurl_easy_init();
if(!clc.downloadCURL) {
Com_Error(ERR_DROP, "CL_cURL_BeginDownload: qcurl_easy_init() "
"failed");
return;
}
clc.download = FS_SV_FOpenFileWrite(clc.downloadTempName);
if(!clc.download) {
Com_Error(ERR_DROP, "CL_cURL_BeginDownload: failed to open "
"%s for writing", clc.downloadTempName);
return;
}
if(com_developer->integer)
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_VERBOSE, 1);
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_URL, clc.downloadURL);
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_TRANSFERTEXT, 0);
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_REFERER,
va("Tremulous://%s", NET_AdrToString(clc.serverAddress)));
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_USERAGENT, va("%s %s",
Q3_VERSION, qcurl_version()));
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_WRITEFUNCTION,
CL_cURL_CallbackWrite);
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_WRITEDATA, &clc.download);
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_NOPROGRESS, 0);
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_PROGRESSFUNCTION,
CL_cURL_CallbackProgress);
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_PROGRESSDATA, NULL);
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_FAILONERROR, 1);
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_FOLLOWLOCATION, 1);
qcurl_easy_setopt(clc.downloadCURL, CURLOPT_MAXREDIRS, 5);
clc.downloadCURLM = qcurl_multi_init();
if(!clc.downloadCURLM) {
qcurl_easy_cleanup(clc.downloadCURL);
clc.downloadCURL = NULL;
Com_Error(ERR_DROP, "CL_cURL_BeginDownload: qcurl_multi_init() "
"failed");
return;
}
qcurl_multi_add_handle(clc.downloadCURLM, clc.downloadCURL);
if(!(clc.sv_allowDownload & DLF_NO_DISCONNECT) &&
!clc.cURLDisconnected) {
CL_AddReliableCommand("disconnect", qtrue);
CL_WritePacket();
CL_WritePacket();
CL_WritePacket();
clc.cURLDisconnected = qtrue;
}
}
void CL_cURL_PerformDownload(void)
{
CURLMcode res;
CURLMsg *msg;
int c;
int i = 0;
res = qcurl_multi_perform(clc.downloadCURLM, &c);
while(res == CURLM_CALL_MULTI_PERFORM && i < 100) {
res = qcurl_multi_perform(clc.downloadCURLM, &c);
i++;
}
if(res == CURLM_CALL_MULTI_PERFORM)
return;
msg = qcurl_multi_info_read(clc.downloadCURLM, &c);
if(msg == NULL) {
return;
}
FS_FCloseFile(clc.download);
if(msg->msg == CURLMSG_DONE && msg->data.result == CURLE_OK) {
FS_SV_Rename(clc.downloadTempName, clc.downloadName);
clc.downloadRestart = qtrue;
}
else {
long code;
qcurl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE,
&code);
Com_Error(ERR_DROP, "Download Error: %s Code: %ld URL: %s",
qcurl_easy_strerror(msg->data.result),
code, clc.downloadURL);
}
CL_NextDownload();
}
#endif /* USE_CURL */
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