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/* This file is part of the KDE project
Copyright (C) 2008 - 2009 Urs Wolfer <uwolfer @ kde.org>
Copyright (C) 2010 Matthias Fuchs <mat69@gmx.net>
Copyright (C) 2011 Lukas Appelhans <l.appelhans@gmx.de>
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.
*/
#include "httpserver.h"
#include "core/transferhandler.h"
#include "core/transfergrouphandler.h"
#include "core/kget.h"
#include "settings.h"
#include <KDebug>
#include <KGlobalSettings>
#include <KStandardDirs>
#include <kwallet.h>
#include <QTcpServer>
#include <QTcpSocket>
#include <QFile>
#include <QDir>
#include <QHttpRequestHeader>
#include <QDateTime>
HttpServer::HttpServer(QWidget *parent)
: QObject(parent),
m_wallet(0)
{
m_wallet = KWallet::Wallet::openWallet(KWallet::Wallet::LocalWallet(),
parent->winId(),///Use MainWindow?
KWallet::Wallet::Asynchronous);
if (m_wallet) {
connect(m_wallet, SIGNAL(walletOpened(bool)), SLOT(init(bool)));
} else {
KGet::showNotification(parent, "error", i18n("Unable to start WebInterface: Could not open KWallet"));
}
}
HttpServer::~HttpServer()
{
delete m_wallet;
}
void HttpServer::init(bool opened)
{
if (opened &&
m_wallet->hasFolder("KGet") &&
m_wallet->setFolder("KGet")) {
m_wallet->readPassword("Webinterface", m_pwd);
} else {
KGet::showNotification(static_cast<QWidget*>(parent()), "error", i18n("Unable to start WebInterface: Could not open KWallet"));
return;
}
m_tcpServer = new QTcpServer(this);
if (!m_tcpServer->listen(QHostAddress::Any, Settings::webinterfacePort())) {
KGet::showNotification(static_cast<QWidget*>(parent()), "error", i18nc("@info", "Unable to start WebInterface: %1", m_tcpServer->errorString()));
return;
}
connect(m_tcpServer, SIGNAL(newConnection()), this, SLOT(handleRequest()));
}
void HttpServer::settingsChanged()
{
if (m_wallet) {
m_wallet->readPassword("Webinterface", m_pwd);
}
}
void HttpServer::handleRequest()
{
int responseCode = 200;
QString responseText = "OK";
QTcpSocket *clientConnection = m_tcpServer->nextPendingConnection();
connect(clientConnection, SIGNAL(disconnected()),
clientConnection, SLOT(deleteLater()));
if (!clientConnection->waitForReadyRead()) {
clientConnection->disconnectFromHost();
}
QByteArray request(clientConnection->readAll());
QHttpRequestHeader header(request);
QByteArray data;
// for HTTP authorization information see: http://www.governmentsecurity.org/articles/OverviewofHTTPAuthentication.php
QString auth = header.value("Authorization");
if (auth.length() < 6 || QByteArray::fromBase64(auth.right(auth.length() - 6).toUtf8()) !=
QString(Settings::webinterfaceUser() + ':' + m_pwd)) {
responseCode = 401;
responseText = "Authorization Required";
// DO NOT TRANSLATE THE FOLLOWING MESSAGE! webserver messages are never translated.
QString authRequiredText = QString("<html><head><title>401 Authorization Required</title></head><body>"
"<h1>Authorization Required</h1>This server could not verify that you "
"are authorized to access the document requested. Either you supplied "
"the wrong credentials (e.g., bad password), or your browser does "
"not understand how to supply the credentials required.</body></html>");
data.append(authRequiredText.toUtf8());
} else {
if (header.path().endsWith(QLatin1String("data.json"))) {
data.append("{\"downloads\":[");
bool needsToBeClosed = false;
foreach(TransferHandler *transfer, KGet::allTransfers()) {
if (needsToBeClosed)
data.append(","); // close the last line
data.append(QString("{\"name\":\"" + transfer->source().fileName() +
"\", \"src\":\"" + transfer->source().prettyUrl() +
"\", \"dest\":\"" + transfer->dest().pathOrUrl() +
"\", \"status\":\"" + transfer->statusText() +
"\", \"size\":\"" + KIO::convertSize(transfer->totalSize()) +
"\", \"progress\":\"" + QString::number(transfer->percent()) + "%"
"\", \"speed\":\"" + i18nc("@item speed of transfer per seconds", "%1/s",
KIO::convertSize(transfer->downloadSpeed())) + "\"}").toUtf8());
needsToBeClosed = true;
}
data.append("]}");
} else if (header.path().startsWith(QLatin1String("/do"))) {
kDebug(5001) << request;
QString args = header.path().right(header.path().length() - 4);
if (!args.isEmpty()) {
QString action;
QString data;
QString group;
QStringList argList = args.split('&');
foreach (const QString &s, argList) {
QStringList map = s.split('=');
if (map.at(0) == "action")
action = map.at(1);
else if (map.at(0) == "data")
data = KUrl::fromPercentEncoding(QByteArray(map.at(1).toUtf8()));
// action specific parameters
else if (map.at(0) == "group")
group = KUrl::fromPercentEncoding(QByteArray(map.at(1).toUtf8()));
}
kDebug(5001) << action << data << group;
if (action == "add") {
//find a folder to store the download in
QString defaultFolder;
//prefer the defaultFolder of the selected group
TransferGroupHandler *groupHandler = KGet::findGroup(group);
if (groupHandler) {
defaultFolder = groupHandler->defaultFolder();
}
if (defaultFolder.isEmpty()) {
QList<TransferGroupHandler*> groups = KGet::groupsFromExceptions(KUrl(data));
if (groups.isEmpty() || groups.first()->defaultFolder().isEmpty()) {
defaultFolder = KGet::generalDestDir();
} else {
// take first item of default folder list (which should be the best one)
groupHandler = groups.first();
group = groupHandler->name();
defaultFolder = groupHandler->defaultFolder();
}
}
KGet::addTransfer(data, defaultFolder, KUrl(data).fileName(), group);
data.append(QString("Ok, %1 added!").arg(data).toUtf8());
} else if (action == "start") {
TransferHandler *transfer = KGet::findTransfer(data);
if (transfer)
transfer->start();
} else if (action == "stop") {
TransferHandler *transfer = KGet::findTransfer(data);
if (transfer)
transfer->stop();
} else if (action == "remove") {
TransferHandler *transfer = KGet::findTransfer(data);
if (transfer)
KGet::delTransfer(transfer);
} else {
kWarning(5001) << "not implemented action" << action << data;
}
}
} else { // read it from filesystem
QString fileName = header.path().remove(".."); // disallow changing directory
if (fileName.endsWith('/'))
fileName = "index.htm";
QString path = KStandardDirs::locate("data", "kget/www/" + fileName);
QFile file(path);
if (path.isEmpty() || !file.open(QIODevice::ReadOnly)) {
responseCode = 404;
responseText = "Not Found";
// DO NOT TRANSLATE THE FOLLOWING MESSAGE! webserver messages are never translated.
QString notfoundText = QString("<html><head><title>404 Not Found</title></head><body>"
"<h1>Not Found</h1>The requested URL <code>%1</code> "
"was not found on this server.</body></html>")
.arg(header.path());
data.append(notfoundText.toUtf8());
} else {
while (!file.atEnd()) {
data.append(file.readLine());
}
}
if (fileName == "index.htm") { // translations
data.replace("#{KGet Webinterface}", i18nc("@label", "KGet Web Interface").toUtf8());
data.replace("#{Nr}", i18nc("@label number", "Nr").toUtf8());
data.replace("#{File name}", i18nc("@label", "File name").toUtf8());
data.replace("#{Finished}", i18nc("@label Progress of transfer", "Finished").toUtf8());
data.replace("#{Speed}", i18nc("@label Speed of transfer", "Speed").toUtf8());
data.replace("#{Status}", i18nc("@label Status of transfer", "Status").toUtf8());
data.replace("#{Start}", i18nc("@action:button start a transfer", "Start").toUtf8());
data.replace("#{Stop}", i18nc("@action:button", "Stop").toUtf8());
data.replace("#{Remove}", i18nc("@action:button", "Remove").toUtf8());
data.replace("#{Source:}", i18nc("@label Download from", "Source:").toUtf8());
data.replace("#{Saving to:}", i18nc("@label Save download to", "Saving to:").toUtf8());
data.replace("#{Webinterface}", i18nc("@label Title in header", "Web Interface").toUtf8());
data.replace("#{Settings}", i18nc("@action", "Settings").toUtf8());
data.replace("#{Refresh}", i18nc("@action", "Refresh").toUtf8());
data.replace("#{Enter URL: }", i18nc("@action", "Enter URL: ").toUtf8());
data.replace("#{OK}", i18nc("@action:button", "OK").toUtf8());
data.replace("#{Refresh download list every}",
i18nc("@action Refresh download list every x (seconds)", "Refresh download list every").toUtf8());
data.replace("#{seconds}", i18nc("@action (Refresh very x )seconds", "seconds").toUtf8());
data.replace("#{Save Settings}", i18nc("@action:button", "Save Settings").toUtf8());
data.replace("#{Downloads}", i18nc("@title", "Downloads").toUtf8());
data.replace("#{KGet Webinterface | Valid XHTML 1.0 Strict & CSS}",
i18nc("@label text in footer", "KGet Web Interface | Valid XHTML 1.0 Strict & CSS").toUtf8().replace('&', "&"));
// delegate group combobox
QString groupOptions = "";
Q_FOREACH(const QString &group, KGet::transferGroupNames())
groupOptions += QString("<option>%1</option>").arg(group);
data.replace("#{groups}", groupOptions.toUtf8());
}
}
}
// for HTTP information see: http://www.jmarshall.com/easy/http/
QByteArray block;
block.append(QString("HTTP/1.1 %1 %2\r\n").arg(responseCode).arg(responseText).toUtf8());
block.append(QString("Date: %1 GMT\r\n").arg(QDateTime(QDateTime::currentDateTime())
.toString("ddd, dd MMM yyyy hh:mm:ss")).toUtf8());
block.append(QString("Server: KGet\r\n").toUtf8()); //TODO: add KGet version
if (responseCode == 401)
block.append(QString("WWW-Authenticate: Basic realm=\"KGet Webinterface Authorization\"\r\n").toUtf8());
if (header.path().endsWith(QLatin1String(".png")) && responseCode == 200)
block.append(QString("Content-Type: image/png\r\n").toUtf8());
else if (header.path().endsWith(QLatin1String(".json")) && responseCode == 200)
block.append(QString("Content-Type: application/x-json\r\n").toUtf8());
else if (header.path().endsWith(QLatin1String(".gif")) && responseCode == 200)
block.append(QString("Content-Type: image/gif\r\n").toUtf8());
else if (header.path().endsWith(QLatin1String(".js")) && responseCode == 200)
block.append(QString("Content-Type: text/javascript\r\n").toUtf8());
else if (header.path().endsWith(QLatin1String(".htc")) && responseCode == 200)
block.append(QString("Content-Type: text/x-component\r\n").toUtf8());
else
block.append(QString("Content-Type: text/html; charset=UTF-8\r\n").toUtf8());
block.append(QString("Content-Length: " + QString::number(data.length())+"\r\n").toUtf8());
block.append(QString("\r\n").toUtf8());
block.append(data);
clientConnection->write(block);
clientConnection->disconnectFromHost();
}
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