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/*
* The Mana Client
* Copyright (C) 2009-2012 The Mana Developers
*
* This file is part of The Mana Client.
*
* 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
* 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/>.
*/
#include <cstdlib> // pulls in int64_t
#include <cstdio>
#include <string>
#include <curl/curl.h>
#ifndef NET_DOWNLOAD_H
#define NET_DOWNLOAD_H
enum DownloadStatus
{
DOWNLOAD_STATUS_CANCELLED = -3,
DOWNLOAD_STATUS_THREAD_ERROR = -2,
DOWNLOAD_STATUS_ERROR = -1,
DOWNLOAD_STATUS_STARTING = 0,
DOWNLOAD_STATUS_IDLE,
DOWNLOAD_STATUS_COMPLETE
};
using DownloadUpdate = int (*)(void *, DownloadStatus, size_t, size_t);
// Matches what CURL expects
using WriteFunction = size_t (*)(void *, size_t, size_t, void *);
struct SDL_Thread;
using CURL = void;
struct curl_slist;
namespace Net {
class Download
{
public:
Download(void *ptr, const std::string &url, DownloadUpdate updateFunction);
~Download();
void addHeader(const std::string &header);
/**
* Convience method for adding no-cache headers.
*/
void noCache();
void setFile(const std::string &filename, int64_t adler32 = -1);
void setWriteFunction(WriteFunction write);
/**
* Starts the download thread.
* @returns true if thread was created
* false if the thread could not be made or download wasn't
* properly setup
*/
bool start();
/**
* Cancels the download. Returns immediately, the cancelled status will
* be noted in the next avialable update call.
*/
void cancel();
char *getError();
private:
static int downloadThread(void *ptr);
static int downloadProgress(void *clientp,
curl_off_t dltotal, curl_off_t dlnow,
curl_off_t ultotal, curl_off_t ulnow);
void *mPtr;
std::string mUrl;
struct {
unsigned cancel : 1;
unsigned memoryWrite: 1;
unsigned checkAdler: 1;
} mOptions;
std::string mFileName;
WriteFunction mWriteFunction = nullptr;
unsigned long mAdler;
DownloadUpdate mUpdateFunction;
SDL_Thread *mThread = nullptr;
CURL *mCurl = nullptr;
curl_slist *mHeaders = nullptr;
char *mError;
};
} // namespace Net
#endif // NET_DOWNLOAD_H
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