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// Reader_libcurl - All info about media files
// Copyright (C) 2002-2010 MediaArea.net SARL, Info@MediaArea.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 3 of the License, or
// 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, see <http://www.gnu.org/licenses/>.
//
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//---------------------------------------------------------------------------
// For user: you can disable or enable it
//#define MEDIAINFO_DEBUG
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Compilation conditions
#include "MediaInfo/Setup.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#if defined(MEDIAINFO_LIBCURL_YES)
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "MediaInfo/Reader/Reader_libcurl.h"
#include "MediaInfo/File__Analyze.h"
#if defined LIBCURL_DLL_RUNTIME
#elif defined LIBCURL_DLL_STATIC
#else
#undef __TEXT
#include "curl/curl.h"
#endif
using namespace ZenLib;
using namespace std;
#ifdef MEDIAINFO_DEBUG
#include <iostream>
#endif // MEDIAINFO_DEBUG
//---------------------------------------------------------------------------
namespace MediaInfoLib
{
//***************************************************************************
// libcurl stuff
//***************************************************************************
struct curl_data
{
MediaInfo_Internal* MI;
CURL* Curl;
String File_Name;
int64u File_Offset;
int64u File_Size;
int64u File_GoTo;
bool Init_AlreadyDone;
#ifdef MEDIAINFO_DEBUG
int64u Debug_BytesRead_Total;
int64u Debug_BytesRead;
int64u Debug_Count;
#endif // MEDIAINFO_DEBUG
curl_data()
{
MI=NULL;
Curl=NULL;
File_Offset=0;
File_Size=(int64u)-1;
File_GoTo=(int64u)-1;
Init_AlreadyDone=false;
#ifdef MEDIAINFO_DEBUG
Debug_BytesRead_Total=0;
Debug_BytesRead=0;
Debug_Count=1;
#endif // MEDIAINFO_DEBUG
}
};
size_t libcurl_WriteData_CallBack(void *ptr, size_t size, size_t nmemb, void *data)
{
#ifdef MEDIAINFO_DEBUG
((curl_data*)data)->Debug_BytesRead_Total+=size*nmemb;
((curl_data*)data)->Debug_BytesRead+=size*nmemb;
#endif //MEDIAINFO_DEBUG
//Init
if (!((curl_data*)data)->Init_AlreadyDone)
{
double File_SizeD;
CURLcode Result=curl_easy_getinfo(((curl_data*)data)->Curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &File_SizeD);
if (Result==CURLE_OK && File_SizeD!=-1)
((curl_data*)data)->MI->Open_Buffer_Init((int64u)File_SizeD, ((curl_data*)data)->File_Name);
else
((curl_data*)data)->MI->Open_Buffer_Init((int64u)-1, ((curl_data*)data)->File_Name);
((curl_data*)data)->Init_AlreadyDone=true;
}
//Continue
std::bitset<32> Result=((curl_data*)data)->MI->Open_Buffer_Continue((int8u*)ptr, size*nmemb);
((curl_data*)data)->File_Offset+=size*nmemb;
if (Result[File__Analyze::IsFinished])
{
((curl_data*)data)->MI->Open_Buffer_Finalize();
return 0;
}
//GoTo
if (((curl_data*)data)->MI->Open_Buffer_Continue_GoTo_Get()!=(int64u)-1)
{
if (!(((curl_data*)data)->MI->Open_Buffer_Continue_GoTo_Get()>=((curl_data*)data)->File_Offset && ((curl_data*)data)->MI->Open_Buffer_Continue_GoTo_Get()<=((curl_data*)data)->File_Offset+100000))
{
((curl_data*)data)->File_GoTo=((curl_data*)data)->MI->Open_Buffer_Continue_GoTo_Get();
return 0;
}
}
//Continue parsing
return size*nmemb;
}
//---------------------------------------------------------------------------
size_t Reader_libcurl::Format_Test(MediaInfo_Internal* MI, const String &File_Name)
{
//Configuring
curl_data Curl_Data;
Curl_Data.Curl=curl_easy_init();
Curl_Data.MI=MI;
Curl_Data.File_Name=File_Name;
string FileName_String=Ztring(Curl_Data.File_Name).To_Local();
if (!MI->Config.File_Curl_Get(_T("UserAgent")).empty())
curl_easy_setopt(Curl_Data.Curl, CURLOPT_USERAGENT, MI->Config.File_Curl_Get(_T("UserAgent")).To_Local().c_str());
if (!MI->Config.File_Curl_Get(_T("Proxy")).empty())
curl_easy_setopt(Curl_Data.Curl, CURLOPT_PROXY, MI->Config.File_Curl_Get(_T("Proxy")).To_Local().c_str());
curl_easy_setopt(Curl_Data.Curl, CURLOPT_URL, FileName_String.c_str());
curl_easy_setopt(Curl_Data.Curl, CURLOPT_FOLLOWLOCATION, 1);
curl_easy_setopt(Curl_Data.Curl, CURLOPT_MAXREDIRS, 3);
curl_easy_setopt(Curl_Data.Curl, CURLOPT_WRITEFUNCTION, &libcurl_WriteData_CallBack);
curl_easy_setopt(Curl_Data.Curl, CURLOPT_WRITEDATA, &Curl_Data);
//Parsing
CURLcode Result;
do
{
//GoTo
if (Curl_Data.File_GoTo!=(int64u)-1)
{
#ifdef MEDIAINFO_DEBUG
std::cout<<std::hex<<Curl_Data.File_Offset-Curl_Data.Debug_BytesRead<<" - "<<Curl_Data.File_Offset<<" : "<<std::dec<<Curl_Data.Debug_BytesRead<<" bytes"<<std::endl;
Curl_Data.File_Offset=Curl_Data.File_GoTo;
Curl_Data.Debug_BytesRead=0;
Curl_Data.Debug_Count++;
#endif //MEDIAINFO_DEBUG
if (Curl_Data.File_GoTo<0x80000000)
{
//We do NOT use large version if we can, because some version (tested: 7.15 linux) do NOT like large version (error code 18)
long File_GoTo_Long=(long)Curl_Data.File_GoTo;
curl_easy_setopt(Curl_Data.Curl, CURLOPT_RESUME_FROM, File_GoTo_Long);
}
else
{
curl_off_t File_GoTo_Off=(curl_off_t)Curl_Data.File_GoTo;
curl_easy_setopt(Curl_Data.Curl, CURLOPT_RESUME_FROM_LARGE, File_GoTo_Off);
}
MI->Open_Buffer_Init((int64u)-1, Curl_Data.File_GoTo);
Curl_Data.File_GoTo=(int64u)-1;
}
//Parsing
Result=curl_easy_perform(Curl_Data.Curl);
}
while (Result==CURLE_WRITE_ERROR && Curl_Data.File_GoTo!=(int64u)-1);
#ifdef MEDIAINFO_DEBUG
std::cout<<std::hex<<Curl_Data.File_Offset-Curl_Data.Debug_BytesRead<<" - "<<Curl_Data.File_Offset<<" : "<<std::dec<<Curl_Data.Debug_BytesRead<<" bytes"<<std::endl;
std::cout<<"Total: "<<std::dec<<Curl_Data.Debug_BytesRead_Total<<" bytes in "<<Curl_Data.Debug_Count<<" blocks"<<std::endl;
#endif //MEDIAINFO_DEBUG
MI->Open_Buffer_Finalize();
//Cleanup
curl_easy_cleanup(Curl_Data.Curl);
return 1;
}
} //NameSpace
#endif //MEDIAINFO_LIBCURL_YES
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