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netutils.h
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netutils.h
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/**************************************************************************
Lightspark, a free flash player implementation
Copyright (C) 2009,2010 Alessandro Pignotti (a.pignotti@sssup.it)
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 3 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, see <http://www.gnu.org/licenses/>.
**************************************************************************/
#ifndef _NET_UTILS_H
#define _NET_UTILS_H
#include <streambuf>
#include <inttypes.h>
#include "swftypes.h"
#include "thread_pool.h"
namespace lightspark
{
class Downloader;
class DownloadManager
{
public:
virtual Downloader* download(const tiny_string& u)=0;
virtual void destroy(Downloader* d)=0;
virtual ~DownloadManager(){}
};
class CurlDownloadManager:public DownloadManager
{
public:
Downloader* download(const tiny_string& u);
void destroy(Downloader* d);
};
class Downloader: public std::streambuf
{
private:
sem_t mutex;
uint8_t* buffer;
uint32_t len;
uint32_t tail;
bool waiting;
virtual int_type underflow();
virtual pos_type seekoff(off_type, std::ios_base::seekdir, std::ios_base::openmode);
virtual pos_type seekpos(pos_type, std::ios_base::openmode);
sem_t available;
protected:
sem_t terminated;
void setFailed();
bool failed;
public:
Downloader();
virtual ~Downloader();
void setLen(uint32_t l);
void append(uint8_t* buffer, uint32_t len);
void stop();
void wait();
bool hasFailed() { return failed; }
uint8_t* getBuffer()
{
return buffer;
}
uint32_t getLen()
{
return len;
}
};
//CurlDownloader can be used as a thread job, standalone or as a streambuf
class CurlDownloader: public Downloader, public IThreadJob
{
private:
tiny_string url;
static size_t write_data(void *buffer, size_t size, size_t nmemb, void *userp);
static size_t write_header(void *buffer, size_t size, size_t nmemb, void *userp);
static int progress_callback(void *clientp, double dltotal, double dlnow, double ultotal, double ulnow);
void execute();
void threadAbort();
public:
CurlDownloader(const tiny_string& u);
};
};
#endif