Files
cantata/http/httpserver.cpp
2021-01-14 19:33:40 +00:00

373 lines
9.9 KiB
C++

/*
* Cantata
*
* Copyright (c) 2011-2021 Craig Drummond <craig.p.drummond@gmail.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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "httpserver.h"
#include "httpsocket.h"
#ifdef TAGLIB_FOUND
#include "tags/tags.h"
#endif
#include "gui/settings.h"
#include "support/thread.h"
#include "support/globalstatic.h"
#include "mpd-interface/mpdconnection.h"
#include <QFile>
#include <QUrl>
#include <QTimer>
#include <QUrlQuery>
#include <QDebug>
static bool debugIsEnabled=false;
#define DBUG if (debugIsEnabled) qWarning() << "HttpServer" << __FUNCTION__
#ifdef Q_OS_WIN
static inline QString fixWindowsPath(const QString &f)
{
return f.length()>3 && f.startsWith(QLatin1Char('/')) && QLatin1Char(':')==f.at(2) ? f.mid(1) : f;
}
#endif
void HttpServer::enableDebug()
{
debugIsEnabled=true;
}
bool HttpServer::debugEnabled()
{
return debugIsEnabled;
}
GLOBAL_STATIC(HttpServer, instance)
#ifdef ENABLE_HTTP_SERVER
HttpServer::HttpServer()
: QObject(nullptr)
, thread(nullptr)
, socket(nullptr)
, closeTimer(nullptr)
{
connect(MPDConnection::self(), SIGNAL(cantataStreams(QList<Song>,bool)), this, SLOT(cantataStreams(QList<Song>,bool)));
connect(MPDConnection::self(), SIGNAL(cantataStreams(QStringList)), this, SLOT(cantataStreams(QStringList)));
connect(MPDConnection::self(), SIGNAL(removedIds(QSet<qint32>)), this, SLOT(removedIds(QSet<qint32>)));
connect(MPDConnection::self(), SIGNAL(ifaceIp(QString)), this, SLOT(ifaceIp(QString)));
}
bool HttpServer::isAlive() const
{
// started on demand, but only start if allowed
return MPDConnection::self()->getDetails().allowLocalStreaming;
}
bool HttpServer::start()
{
if (closeTimer) {
DBUG << "stop close timer";
closeTimer->stop();
}
if (socket) {
DBUG << "already open";
return true;
}
DBUG << "open new socket";
quint16 prevPort=Settings::self()->httpAllocatedPort();
bool newThread=nullptr==thread;
if (newThread) {
thread=new Thread("HttpServer");
}
socket=new HttpSocket(Settings::self()->httpInterface(), prevPort);
socket->mpdAddress(MPDConnection::self()->ipAddress());
connect(this, SIGNAL(terminateSocket()), socket, SLOT(terminate()), Qt::QueuedConnection);
if (socket->serverPort()!=prevPort) {
Settings::self()->saveHttpAllocatedPort(socket->serverPort());
}
socket->moveToThread(thread);
bool started=socket->isListening();
if (newThread) {
thread->start();
}
return started;
}
void HttpServer::stop()
{
if (socket) {
DBUG;
emit terminateSocket();
socket=nullptr;
}
}
void HttpServer::readConfig()
{
QString iface=Settings::self()->httpInterface();
if (socket && socket->isListening() && iface==socket->configuredInterface()) {
return;
}
bool wasStarted=nullptr!=socket;
stop();
if (wasStarted) {
start();
}
}
static inline QString serverUrl(const QString &ip, quint16 port)
{
return QLatin1String("http://")+ip+QLatin1Char(':')+QString::number(port);
}
QString HttpServer::address() const
{
return socket ? serverUrl(currentIfaceIp, socket->serverPort()) : QLatin1String("http://127.0.0.1:*");
}
bool HttpServer::isOurs(const QString &url) const
{
if (nullptr==socket || !url.startsWith(QLatin1String("http://"))) {
return false;
}
for (const QString &ip: ipAddresses) {
if (url.startsWith(serverUrl(ip, socket->serverPort()))) {
return true;
}
}
return false;
}
QByteArray HttpServer::encodeUrl(const Song &s)
{
DBUG << "song" << s.file << isAlive();
if (!start()) {
return QByteArray();
}
QUrl url;
QUrlQuery query;
url.setScheme("http");
url.setHost(currentIfaceIp);
url.setPort(socket->serverPort());
#ifdef Q_OS_WIN
// Use a query item, as s.file might have a driver specifier
query.addQueryItem("file", s.file);
url.setPath("/"+Utils::getFile(s.file));
#else
url.setPath(s.file);
#endif
if (!s.album.isEmpty()) {
query.addQueryItem("album", s.album);
}
if (!s.artist.isEmpty()) {
query.addQueryItem("artist", s.artist);
}
if (!s.albumartist.isEmpty()) {
query.addQueryItem("albumartist", s.albumartist);
}
if (!s.composer().isEmpty()) {
query.addQueryItem("composer", s.composer());
}
if (!s.title.isEmpty()) {
query.addQueryItem("title", s.title);
}
if (!s.genres[0].isEmpty()) {
query.addQueryItem("genre", s.firstGenre());
}
if (s.disc) {
query.addQueryItem("disc", QString::number(s.disc));
}
if (s.year) {
query.addQueryItem("year", QString::number(s.year));
}
if (s.time) {
query.addQueryItem("time", QString::number(s.time));
}
if (s.track) {
query.addQueryItem("track", QString::number(s.track));
}
if (s.isFromOnlineService()) {
query.addQueryItem("onlineservice", s.onlineService());
}
query.addQueryItem("id", QString::number(s.id));
query.addQueryItem("cantata", "song");
url.setQuery(query);
DBUG << "encoded as" << url.toString();
return url.toEncoded();
}
QByteArray HttpServer::encodeUrl(const QString &file)
{
Song s;
#ifdef Q_OS_WIN
QString f=fixWindowsPath(file);
DBUG << "file" << f << "orig" << file;
// For some reason, drag'n' drop of \\share\path\file.mp3 is changed to share/path/file.mp3!
if (!f.startsWith(QLatin1String("//")) && !QFile::exists(f)) {
QString share=f.startsWith(QLatin1Char('/')) ? (QLatin1Char('/')+f) : (QLatin1String("//")+f);
if (QFile::exists(share)) {
f=share;
DBUG << "converted to share-path" << f;
}
}
#ifdef TAGLIB_FOUND
s=Tags::read(f);
#endif
s.file=f;
#else
DBUG << "file" << file;
#ifdef TAGLIB_FOUND
s=Tags::read(file);
#endif
s.file=file;
#endif
return /*s.isEmpty() ? QByteArray() :*/ encodeUrl(s);
}
Song HttpServer::decodeUrl(const QString &url) const
{
return decodeUrl(QUrl(url));
}
Song HttpServer::decodeUrl(const QUrl &url) const
{
Song s;
QUrlQuery q(url);
if (q.hasQueryItem("cantata") && q.queryItemValue("cantata")=="song") {
if (q.hasQueryItem("album")) {
s.album=q.queryItemValue("album", QUrl::FullyDecoded);
}
if (q.hasQueryItem("artist")) {
s.artist=q.queryItemValue("artist", QUrl::FullyDecoded);
}
if (q.hasQueryItem("albumartist")) {
s.albumartist=q.queryItemValue("albumartist", QUrl::FullyDecoded);
}
if (q.hasQueryItem("composer")) {
s.setComposer(q.queryItemValue("composer", QUrl::FullyDecoded));
}
if (q.hasQueryItem("title")) {
s.title=q.queryItemValue("title", QUrl::FullyDecoded);
}
if (q.hasQueryItem("genre")) {
s.addGenre(q.queryItemValue("genre", QUrl::FullyDecoded));
}
if (q.hasQueryItem("disc")) {
s.disc=q.queryItemValue("disc").toInt();
}
if (q.hasQueryItem("year")) {
s.year=q.queryItemValue("year").toInt();
}
if (q.hasQueryItem("time")) {
s.time=q.queryItemValue("time").toInt();
}
if (q.hasQueryItem("track")) {
s.track=q.queryItemValue("track").toInt();
}
if (q.hasQueryItem("id")) {
s.id=q.queryItemValue("id").toInt();
}
if (q.hasQueryItem("onlineservice")) {
s.setIsFromOnlineService(q.queryItemValue("onlineservice", QUrl::FullyDecoded));
}
#ifdef Q_OS_WIN
s.file=fixWindowsPath(q.queryItemValue("file", QUrl::FullyDecoded));
#else
s.file=url.path();
#endif
s.type=Song::CantataStream;
#if defined CDDB_FOUND || defined MUSICBRAINZ5_FOUND
if (s.file.startsWith(Song::constCddaProtocol)) {
s.type=Song::Cdda;
}
#endif
DBUG << s.file << s.albumArtist() << s.album << s.title;
}
return s;
}
void HttpServer::startCloseTimer()
{
if (!closeTimer) {
closeTimer=new QTimer(this);
closeTimer->setSingleShot(true);
connect(closeTimer, SIGNAL(timeout()), this, SLOT(stop()));
}
DBUG;
closeTimer->start(1000);
}
void HttpServer::cantataStreams(const QStringList &files)
{
DBUG << files;
for (const QString &f: files) {
Song s=HttpServer::self()->decodeUrl(f);
if (s.isCantataStream() || s.isCdda()) {
start();
break;
}
}
}
void HttpServer::cantataStreams(const QList<Song> &songs, bool isUpdate)
{
DBUG << isUpdate << songs.count();
if (!isUpdate) {
streamIds.clear();
}
for (const Song &s: songs) {
streamIds.insert(s.id);
}
if (streamIds.isEmpty()) {
startCloseTimer();
} else {
start();
}
}
void HttpServer::removedIds(const QSet<qint32> &ids)
{
streamIds+=ids;
if (streamIds.isEmpty()) {
startCloseTimer();
}
}
void HttpServer::ifaceIp(const QString &ip)
{
DBUG << "MPD interface ip" << ip;
if (ip.isEmpty()) {
return;
}
currentIfaceIp=ip;
ipAddresses.insert(ip);
}
#endif
#include "moc_httpserver.cpp"