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/*
* Copyright (C) 2001-2006 Jacek Sieka, arnetheduck on gmail point com
*
* 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.
*/
#include "stdinc.h"
#include "DCPlusPlus.h"
#include "HttpConnection.h"
#include "SettingsManager.h"
#include "version.h"
/**
* Downloads a file and returns it as a string
* @todo Report exceptions
* @todo Abort download
* @param aUrl Full URL of file
* @return A string with the content, or empty if download failed
*/
void HttpConnection::downloadFile(const string& aUrl) {
dcassert(Util::findSubString(aUrl, "http://") == 0);
currentUrl = aUrl;
// Trim spaces
while(currentUrl[0] == ' ')
currentUrl.erase(0, 1);
while(currentUrl[currentUrl.length() - 1] == ' ') {
currentUrl.erase(currentUrl.length()-1);
}
// reset all settings (as in constructor), moved here from onLine(302) because ok was not reset properly
moved302 = false;
ok = false;
size = -1;
// set download type
if(Util::stricmp(currentUrl.substr(currentUrl.size() - 4), ".bz2") == 0) {
fire(HttpConnectionListener::TypeBZ2(), this);
} else {
fire(HttpConnectionListener::TypeNormal(), this);
}
if(SETTING(HTTP_PROXY).empty()) {
Util::decodeUrl(currentUrl, server, port, file);
if(file.empty())
file = "/";
} else {
Util::decodeUrl(SETTING(HTTP_PROXY), server, port, file);
file = currentUrl;
}
if(port == 0)
port = 80;
if(!socket) {
socket = BufferedSocket::getSocket(0x0a);
}
socket->addListener(this);
try {
socket->connect(server, port, false, false);
} catch(const Exception& e) {
fire(HttpConnectionListener::Failed(), this, e.getError() + " (" + currentUrl + ")");
}
}
void HttpConnection::on(BufferedSocketListener::Connected) throw() {
dcassert(socket);
socket->write("GET " + file + " HTTP/1.1\r\n");
socket->write("User-Agent: " APPNAME " v" VERSIONSTRING "\r\n");
string sRemoteServer = server;
if(!SETTING(HTTP_PROXY).empty())
{
string tfile;
u_int16_t tport;
Util::decodeUrl(file, sRemoteServer, tport, tfile);
}
socket->write("Host: " + sRemoteServer + "\r\n");
socket->write("Connection: close\r\n"); // we'll only be doing one request
socket->write("Cache-Control: no-cache\r\n\r\n");
}
void HttpConnection::on(BufferedSocketListener::Line, const string& aLine) throw() {
if(!ok) {
if(aLine.find("200") == string::npos) {
if(aLine.find("302") != string::npos){
moved302 = true;
} else {
socket->disconnect();
socket->removeListener(this);
BufferedSocket::putSocket(socket);
socket = NULL;
fire(HttpConnectionListener::Failed(), this, aLine + " (" + currentUrl + ")");
return;
}
}
ok = true;
} else if(moved302 && Util::findSubString(aLine, "Location") != string::npos){
dcassert(socket);
socket->removeListener(this);
socket->disconnect();
BufferedSocket::putSocket(socket);
socket = NULL;
string location302 = aLine.substr(10, aLine.length() - 11);
// make sure we can also handle redirects with relative paths
if(Util::strnicmp(location302.c_str(), "http://", 7) != 0) {
if(location302[0] == '/') {
Util::decodeUrl(currentUrl, server, port, file);
string tmp = "http://" + server;
if(port != 80)
tmp += ':' + Util::toString(port);
location302 = tmp + location302;
} else {
string::size_type i = currentUrl.rfind('/');
dcassert(i != string::npos);
location302 = currentUrl.substr(0, i + 1) + location302;
}
}
fire(HttpConnectionListener::Redirected(), this, location302);
downloadFile(location302);
} else if(aLine == "\x0d") {
socket->setDataMode(size);
} else if(Util::findSubString(aLine, "Content-Length") != string::npos) {
size = Util::toInt(aLine.substr(16, aLine.length() - 17));
} else if(Util::findSubString(aLine, "Content-Encoding") != string::npos) {
if(aLine.substr(18, aLine.length() - 19) == "x-bzip2")
fire(HttpConnectionListener::TypeBZ2(), this);
}
}
void HttpConnection::on(BufferedSocketListener::Failed, const string& aLine) throw() {
socket->removeListener(this);
BufferedSocket::putSocket(socket);
socket = NULL;
fire(HttpConnectionListener::Failed(), this, aLine + " (" + currentUrl + ")");
}
void HttpConnection::on(BufferedSocketListener::ModeChange) throw() {
socket->removeListener(this);
socket->disconnect();
BufferedSocket::putSocket(socket);
socket = NULL;
fire(HttpConnectionListener::Complete(), this, currentUrl);
}
void HttpConnection::on(BufferedSocketListener::Data, u_int8_t* aBuf, size_t aLen) throw() {
fire(HttpConnectionListener::Data(), this, aBuf, aLen);
}
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