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strawberry-audio-player-win.../src/subsonic/subsonicservice.cpp

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/*
* Strawberry Music Player
* Copyright 2019-2021, Jonas Kvinge <jonas@jkvinge.net>
*
* Strawberry 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.
*
* Strawberry 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 Strawberry. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include <memory>
#include <QtGlobal>
#include <QObject>
#include <QByteArray>
#include <QPair>
#include <QList>
#include <QMap>
#include <QString>
#include <QVariant>
#include <QUrl>
#include <QUrlQuery>
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QSslConfiguration>
#include <QSslSocket>
#include <QSslError>
#include <QCryptographicHash>
#include <QJsonValue>
#include <QJsonDocument>
#include <QJsonObject>
#include <QSettings>
#include <QSortFilterProxyModel>
#include <QtDebug>
#include "core/utilities.h"
#include "core/application.h"
#include "core/player.h"
#include "core/logging.h"
#include "core/networkaccessmanager.h"
#include "core/database.h"
#include "core/song.h"
#include "collection/collectionbackend.h"
#include "collection/collectionmodel.h"
#include "subsonicservice.h"
#include "subsonicurlhandler.h"
#include "subsonicrequest.h"
#include "subsonicscrobblerequest.h"
#include "settings/settingsdialog.h"
#include "settings/subsonicsettingspage.h"
const Song::Source SubsonicService::kSource = Song::Source_Subsonic;
const char *SubsonicService::kClientName = "Strawberry";
const char *SubsonicService::kApiVersion = "1.11.0";
const char *SubsonicService::kSongsTable = "subsonic_songs";
const char *SubsonicService::kSongsFtsTable = "subsonic_songs_fts";
const int SubsonicService::kMaxRedirects = 3;
SubsonicService::SubsonicService(Application *app, QObject *parent)
: InternetService(Song::Source_Subsonic, "Subsonic", "subsonic", SubsonicSettingsPage::kSettingsGroup, SettingsDialog::Page_Subsonic, app, parent),
app_(app),
url_handler_(new SubsonicUrlHandler(app, this)),
collection_backend_(nullptr),
collection_model_(nullptr),
collection_sort_model_(new QSortFilterProxyModel(this)),
http2_(false),
verify_certificate_(false),
download_album_covers_(true),
auth_method_(SubsonicSettingsPage::AuthMethod_MD5),
ping_redirects_(0) {
app->player()->RegisterUrlHandler(url_handler_);
// Backend
collection_backend_ = new CollectionBackend();
collection_backend_->moveToThread(app_->database()->thread());
collection_backend_->Init(app_->database(), app->task_manager(), Song::Source_Subsonic, kSongsTable, kSongsFtsTable);
// Model
collection_model_ = new CollectionModel(collection_backend_, app_, this);
collection_sort_model_->setSourceModel(collection_model_);
collection_sort_model_->setSortRole(CollectionModel::Role_SortText);
collection_sort_model_->setDynamicSortFilter(true);
collection_sort_model_->setSortLocaleAware(true);
collection_sort_model_->sort(0);
SubsonicService::ReloadSettings();
}
SubsonicService::~SubsonicService() {
while (!replies_.isEmpty()) {
QNetworkReply *reply = replies_.takeFirst();
QObject::disconnect(reply, nullptr, this, nullptr);
if (reply->isRunning()) reply->abort();
reply->deleteLater();
}
collection_backend_->deleteLater();
}
void SubsonicService::Exit() {
QObject::connect(collection_backend_, &CollectionBackend::ExitFinished, this, &SubsonicService::ExitFinished);
collection_backend_->ExitAsync();
}
void SubsonicService::ShowConfig() {
app_->OpenSettingsDialogAtPage(SettingsDialog::Page_Subsonic);
}
void SubsonicService::ReloadSettings() {
QSettings s;
s.beginGroup(SubsonicSettingsPage::kSettingsGroup);
server_url_ = s.value("url").toUrl();
username_ = s.value("username").toString();
QByteArray password = s.value("password").toByteArray();
if (password.isEmpty()) password_.clear();
else password_ = QString::fromUtf8(QByteArray::fromBase64(password));
http2_ = s.value("http2", false).toBool();
verify_certificate_ = s.value("verifycertificate", false).toBool();
download_album_covers_ = s.value("downloadalbumcovers", true).toBool();
auth_method_ = static_cast<SubsonicSettingsPage::AuthMethod>(s.value("authmethod", SubsonicSettingsPage::AuthMethod_MD5).toInt());
s.endGroup();
}
void SubsonicService::SendPing() {
SendPingWithCredentials(server_url_, username_, password_, auth_method_, false);
}
void SubsonicService::SendPingWithCredentials(QUrl url, const QString &username, const QString &password, const SubsonicSettingsPage::AuthMethod auth_method, const bool redirect) {
if (!network_ || !redirect) {
network_ = std::make_unique<QNetworkAccessManager>();
#if (QT_VERSION >= QT_VERSION_CHECK(5, 9, 0))
network_->setRedirectPolicy(QNetworkRequest::NoLessSafeRedirectPolicy);
#endif
ping_redirects_ = 0;
}
ParamList params = ParamList() << Param("c", kClientName)
<< Param("v", kApiVersion)
<< Param("f", "json")
<< Param("u", username);
if (auth_method == SubsonicSettingsPage::AuthMethod_Hex) {
params << Param("p", QString("enc:" + password.toUtf8().toHex()));
}
else {
const QString salt = Utilities::CryptographicRandomString(20);
QCryptographicHash md5(QCryptographicHash::Md5);
md5.addData(password.toUtf8());
md5.addData(salt.toUtf8());
params << Param("s", salt);
params << Param("t", md5.result().toHex());
}
QUrlQuery url_query(url.query());
for (const Param &param : params) {
url_query.addQueryItem(QUrl::toPercentEncoding(param.first), QUrl::toPercentEncoding(param.second));
}
if (!redirect) {
if (!url.path().isEmpty() && url.path().right(1) == "/") {
url.setPath(url.path() + QString("rest/ping.view"));
}
else {
url.setPath(url.path() + QString("/rest/ping.view"));
}
}
url.setQuery(url_query);
QNetworkRequest req(url);
if (url.scheme() == "https" && !verify_certificate_) {
QSslConfiguration sslconfig = QSslConfiguration::defaultConfiguration();
sslconfig.setPeerVerifyMode(QSslSocket::VerifyNone);
req.setSslConfiguration(sslconfig);
}
#if QT_VERSION >= QT_VERSION_CHECK(5, 9, 0)
req.setAttribute(QNetworkRequest::RedirectPolicyAttribute, QNetworkRequest::NoLessSafeRedirectPolicy);
#else
req.setAttribute(QNetworkRequest::FollowRedirectsAttribute, true);
#endif
req.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
req.setAttribute(QNetworkRequest::Http2AllowedAttribute, http2_);
#endif
errors_.clear();
QNetworkReply *reply = network_->get(req);
replies_ << reply;
QObject::connect(reply, &QNetworkReply::sslErrors, this, &SubsonicService::HandlePingSSLErrors);
QObject::connect(reply, &QNetworkReply::finished, this, [this, reply, url, username, password, auth_method]() { HandlePingReply(reply, url, username, password, auth_method); });
//qLog(Debug) << "Subsonic: Sending request" << url << url.query();
}
void SubsonicService::HandlePingSSLErrors(const QList<QSslError> &ssl_errors) {
for (const QSslError &ssl_error : ssl_errors) {
errors_ += ssl_error.errorString();
}
}
void SubsonicService::HandlePingReply(QNetworkReply *reply, const QUrl &url, const QString &username, const QString &password, const SubsonicSettingsPage::AuthMethod auth_method) {
Q_UNUSED(url);
if (!replies_.contains(reply)) return;
replies_.removeAll(reply);
QObject::disconnect(reply, nullptr, this, nullptr);
reply->deleteLater();
if (reply->error() != QNetworkReply::NoError || reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() != 200) {
if (reply->error() != QNetworkReply::NoError && reply->error() < 200) {
// This is a network error, there is nothing more to do.
PingError(QString("%1 (%2)").arg(reply->errorString()).arg(reply->error()));
return;
}
else {
// Check for a valid redirect first.
if (
(
reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == 301 ||
reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == 302 ||
reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == 307
)
&&
ping_redirects_ <= kMaxRedirects
)
{
QUrl redirect_url = reply->attribute(QNetworkRequest::RedirectionTargetAttribute).toUrl();
if (!redirect_url.isEmpty()) {
++ping_redirects_;
qLog(Debug) << "Redirecting ping request to" << redirect_url.toString(QUrl::RemoveQuery);
SendPingWithCredentials(redirect_url, username, password, auth_method, true);
return;
}
}
// See if there is Json data containing "error" - then use that instead.
QByteArray data = reply->readAll();
QJsonParseError parse_error;
QJsonDocument json_doc = QJsonDocument::fromJson(data, &parse_error);
if (parse_error.error == QJsonParseError::NoError && !json_doc.isEmpty() && json_doc.isObject()) {
QJsonObject json_obj = json_doc.object();
if (!json_obj.isEmpty() && json_obj.contains("error")) {
QJsonValue json_error = json_obj["error"];
if (json_error.isObject()) {
json_obj = json_error.toObject();
if (!json_obj.isEmpty() && json_obj.contains("code") && json_obj.contains("message")) {
int code = json_obj["code"].toInt();
QString message = json_obj["message"].toString();
errors_ << QString("%1 (%2)").arg(message).arg(code);
}
}
}
}
if (errors_.isEmpty()) {
if (reply->error() != QNetworkReply::NoError) {
errors_ << QString("%1 (%2)").arg(reply->errorString()).arg(reply->error());
}
else {
errors_ << QString("Received HTTP code %1").arg(reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt());
}
}
PingError();
return;
}
}
errors_.clear();
QByteArray data(reply->readAll());
QJsonParseError json_error;
QJsonDocument json_doc = QJsonDocument::fromJson(data, &json_error);
if (json_error.error != QJsonParseError::NoError) {
PingError("Ping reply from server missing Json data.");
return;
}
if (json_doc.isEmpty()) {
PingError("Ping reply from server has empty Json document.");
return;
}
if (!json_doc.isObject()) {
PingError("Ping reply from server has Json document that is not an object.", json_doc);
return;
}
QJsonObject json_obj = json_doc.object();
if (json_obj.isEmpty()) {
PingError("Ping reply from server has empty Json object.", json_doc);
return;
}
if (!json_obj.contains("subsonic-response")) {
PingError("Ping reply from server is missing subsonic-response", json_obj);
return;
}
QJsonValue value_response = json_obj["subsonic-response"];
if (!value_response.isObject()) {
PingError("Ping reply from server subsonic-response is not an object", value_response);
return;
}
QJsonObject obj_response = value_response.toObject();
if (obj_response.contains("error")) {
QJsonValue value_error = obj_response["error"];
if (!value_error.isObject()) {
PingError("Authentication error reply from server is not an object", value_error);
return;
}
QJsonObject obj_error = value_error.toObject();
if (!obj_error.contains("code") || !obj_error.contains("message")) {
PingError("Authentication error reply from server is missing status or message", json_obj);
return;
}
//int status = obj_error["code"].toInt();
QString message = obj_error["message"].toString();
emit TestComplete(false, message);
emit TestFailure(message);
return;
}
if (!obj_response.contains("status")) {
PingError("Ping reply from server is missing status", obj_response);
return;
}
QString status = obj_response["status"].toString().toLower();
QString message = obj_response["message"].toString();
if (status == "failed") {
emit TestComplete(false, message);
emit TestFailure(message);
return;
}
else if (status == "ok") {
emit TestComplete(true);
emit TestSuccess();
return;
}
else {
PingError("Ping reply status from server is unknown", json_obj);
return;
}
}
void SubsonicService::CheckConfiguration() {
if (server_url_.isEmpty()) {
emit TestComplete(false, "Missing Subsonic server url.");
return;
}
if (username_.isEmpty()) {
emit TestComplete(false, "Missing Subsonic username.");
return;
}
if (password_.isEmpty()) {
emit TestComplete(false, "Missing Subsonic password.");
return;
}
}
void SubsonicService::Scrobble(const QString &song_id, const bool submission, const QDateTime &time) {
if (!server_url().isValid() || username().isEmpty() || password().isEmpty()) {
return;
}
if (!scrobble_request_) {
// We're doing requests every 30-240s the whole time, so keep reusing this instance
scrobble_request_ = std::make_shared<SubsonicScrobbleRequest>(this, url_handler_, app_);
}
scrobble_request_->CreateScrobbleRequest(song_id, submission, time);
}
void SubsonicService::ResetSongsRequest() {
if (songs_request_) {
QObject::disconnect(songs_request_.get(), nullptr, this, nullptr);
QObject::disconnect(this, nullptr, songs_request_.get(), nullptr);
songs_request_.reset();
}
}
void SubsonicService::GetSongs() {
if (!server_url().isValid()) {
emit SongsResults(SongMap(), tr("Server URL is invalid."));
return;
}
if (username().isEmpty() || password().isEmpty()) {
emit SongsResults(SongMap(), tr("Missing username or password."));
return;
}
ResetSongsRequest();
songs_request_ = std::make_shared<SubsonicRequest>(this, url_handler_, app_);
QObject::connect(songs_request_.get(), &SubsonicRequest::Results, this, &SubsonicService::SongsResultsReceived);
QObject::connect(songs_request_.get(), &SubsonicRequest::UpdateStatus, this, &SubsonicService::SongsUpdateStatus);
QObject::connect(songs_request_.get(), &SubsonicRequest::ProgressSetMaximum, this, &SubsonicService::SongsProgressSetMaximum);
QObject::connect(songs_request_.get(), &SubsonicRequest::UpdateProgress, this, &SubsonicService::SongsUpdateProgress);
songs_request_->GetAlbums();
}
void SubsonicService::SongsResultsReceived(const SongMap &songs, const QString &error) {
emit SongsResults(songs, error);
}
void SubsonicService::PingError(const QString &error, const QVariant &debug) {
if (!error.isEmpty()) errors_ << error;
QString error_html;
for (const QString &e : errors_) {
qLog(Error) << "Subsonic:" << e;
error_html += e + "<br />";
}
if (debug.isValid()) qLog(Debug) << debug;
emit TestFailure(error_html);
emit TestComplete(false, error_html);
errors_.clear();
}
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