530 lines
17 KiB
C++
530 lines
17 KiB
C++
/*
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* Strawberry Music Player
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* Copyright 2020, Jonas Kvinge <jonas@jkvinge.net>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "config.h"
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#include <algorithm>
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#include <QtGlobal>
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#include <QObject>
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#include <QList>
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#include <QVariant>
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#include <QByteArray>
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#include <QString>
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#include <QUrl>
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#include <QUrlQuery>
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#include <QNetworkAccessManager>
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#include <QNetworkRequest>
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#include <QNetworkReply>
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#include <QSslError>
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#include <QCryptographicHash>
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#include <QJsonDocument>
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#include <QJsonValue>
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#include <QJsonObject>
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#include <QJsonArray>
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#include <QDesktopServices>
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#include <QMessageBox>
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#include <QtDebug>
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#include "core/application.h"
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#include "core/network.h"
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#include "core/logging.h"
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#include "core/song.h"
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#include "core/utilities.h"
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#include "internet/localredirectserver.h"
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#include "albumcoverfetcher.h"
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#include "coverprovider.h"
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#include "spotifycoverprovider.h"
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const char *SpotifyCoverProvider::kSettingsGroup = "Spotify";
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const char *SpotifyCoverProvider::kOAuthAuthorizeUrl = "https://accounts.spotify.com/authorize";
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const char *SpotifyCoverProvider::kOAuthAccessTokenUrl = "https://accounts.spotify.com/api/token";
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const char *SpotifyCoverProvider::kOAuthRedirectUrl = "http://localhost:63111/";
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const char *SpotifyCoverProvider::kClientIDB64 = "ZTZjY2Y2OTQ5NzY1NGE3NThjOTAxNWViYzdiMWQzMTc=";
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const char *SpotifyCoverProvider::kClientSecretB64 = "N2ZlMDMxODk1NTBlNDE3ZGI1ZWQ1MzE3ZGZlZmU2MTE=";
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const char *SpotifyCoverProvider::kApiUrl = "https://api.spotify.com/v1";
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const int SpotifyCoverProvider::kLimit = 10;
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SpotifyCoverProvider::SpotifyCoverProvider(Application *app, QObject *parent) : CoverProvider("Spotify", true, true, 2.5, true, true, app, parent), network_(new NetworkAccessManager(this)), server_(nullptr) {
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QSettings s;
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s.beginGroup(kSettingsGroup);
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if (s.contains("access_token")) {
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access_token_ = s.value("access_token").toString();
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}
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s.endGroup();
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}
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void SpotifyCoverProvider::Authenticate() {
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QUrl redirect_url(kOAuthRedirectUrl);
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if (!server_) {
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server_ = new LocalRedirectServer(this);
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server_->set_https(false);
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int port = redirect_url.port();
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int port_max = port + 10;
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bool success = false;
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forever {
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server_->set_port(port);
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if (server_->Listen()) { success = true; break; }
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++port;
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if (port > port_max) break;
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}
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if (!success) {
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AuthError(server_->error());
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server_->deleteLater();
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server_ = nullptr;
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return;
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}
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connect(server_, SIGNAL(Finished()), this, SLOT(RedirectArrived()));
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}
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code_verifier_ = Utilities::CryptographicRandomString(44);
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code_challenge_ = QString(QCryptographicHash::hash(code_verifier_.toUtf8(), QCryptographicHash::Sha256).toBase64(QByteArray::Base64UrlEncoding));
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if (code_challenge_.lastIndexOf(QChar('=')) == code_challenge_.length() - 1) {
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code_challenge_.chop(1);
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}
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const ParamList params = ParamList() << Param("client_id", QByteArray::fromBase64(kClientIDB64))
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<< Param("response_type", "code")
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<< Param("redirect_uri", redirect_url.toString())
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<< Param("state", code_challenge_);
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QUrlQuery url_query;
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for (const Param ¶m : params) {
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url_query.addQueryItem(QUrl::toPercentEncoding(param.first), QUrl::toPercentEncoding(param.second));
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}
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QUrl url(kOAuthAuthorizeUrl);
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url.setQuery(url_query);
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const bool result = QDesktopServices::openUrl(url);
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if (!result) {
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QMessageBox messagebox(QMessageBox::Information, tr("Spotify Authentication"), tr("Please open this URL in your browser") + QString(":<br /><a href=\"%1\">%1</a>").arg(url.toString()), QMessageBox::Ok);
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messagebox.setTextFormat(Qt::RichText);
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messagebox.exec();
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}
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}
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void SpotifyCoverProvider::Deauthenticate() {
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access_token_.clear();
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QSettings s;
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s.beginGroup(kSettingsGroup);
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s.remove("access_token");
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s.endGroup();
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}
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void SpotifyCoverProvider::RedirectArrived() {
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if (!server_) return;
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if (server_->error().isEmpty()) {
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QUrl url = server_->request_url();
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if (url.isValid()) {
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QUrlQuery url_query(url);
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if (url_query.hasQueryItem("error")) {
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AuthError(QUrlQuery(url).queryItemValue("error"));
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}
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else if (url_query.hasQueryItem("code")) {
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QUrl redirect_url(kOAuthRedirectUrl);
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redirect_url.setPort(server_->url().port());
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RequestAccessToken(url, redirect_url);
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}
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else {
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AuthError(tr("Redirect missing token code!"));
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}
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}
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else {
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AuthError(tr("Received invalid reply from web browser."));
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}
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}
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else {
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AuthError(server_->error());
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}
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server_->close();
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server_->deleteLater();
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server_ = nullptr;
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}
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void SpotifyCoverProvider::RequestAccessToken(const QUrl &url, const QUrl &redirect_url) {
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qLog(Debug) << "Spotify: Authorization URL Received" << url;
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QUrlQuery url_query(url);
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if (url.hasQuery() && url_query.hasQueryItem("code") && url_query.hasQueryItem("state")) {
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QString code = url_query.queryItemValue("code");
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QString state = url_query.queryItemValue("state");
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const ParamList params = ParamList() << Param("client_id", QByteArray::fromBase64(kClientIDB64))
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<< Param("client_secret", QByteArray::fromBase64(kClientSecretB64))
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<< Param("grant_type", "authorization_code")
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<< Param("code", code)
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<< Param("redirect_uri", redirect_url.toString());
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QUrlQuery new_url_query;
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for (const Param ¶m : params) {
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new_url_query.addQueryItem(QUrl::toPercentEncoding(param.first), QUrl::toPercentEncoding(param.second));
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}
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QUrl new_url(kOAuthAccessTokenUrl);
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QNetworkRequest req = QNetworkRequest(new_url);
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req.setAttribute(QNetworkRequest::FollowRedirectsAttribute, true);
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req.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
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QString auth_header_data = QByteArray::fromBase64(kClientIDB64) + QString(":") + QByteArray::fromBase64(kClientSecretB64);
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req.setRawHeader("Authorization", "Basic " + auth_header_data.toUtf8().toBase64());
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QByteArray query = new_url_query.toString(QUrl::FullyEncoded).toUtf8();
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QNetworkReply *reply = network_->post(req, query);
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connect(reply, SIGNAL(sslErrors(QList<QSslError>)), this, SLOT(HandleLoginSSLErrors(QList<QSslError>)));
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connect(reply, &QNetworkReply::finished, [=] { AccessTokenRequestFinished(reply); });
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}
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else {
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AuthError(tr("Redirect from Spotify is missing query items code or state."));
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return;
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}
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}
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void SpotifyCoverProvider::HandleLoginSSLErrors(QList<QSslError> ssl_errors) {
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for (const QSslError &ssl_error : ssl_errors) {
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login_errors_ += ssl_error.errorString();
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}
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}
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void SpotifyCoverProvider::AccessTokenRequestFinished(QNetworkReply *reply) {
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reply->deleteLater();
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if (reply->error() != QNetworkReply::NoError || reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() != 200) {
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if (reply->error() != QNetworkReply::NoError && reply->error() < 200) {
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// This is a network error, there is nothing more to do.
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AuthError(QString("%1 (%2)").arg(reply->errorString()).arg(reply->error()));
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return;
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}
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else {
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// See if there is Json data containing "error" and "error_description" then use that instead.
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QByteArray data = reply->readAll();
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QJsonParseError json_error;
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QJsonDocument json_doc = QJsonDocument::fromJson(data, &json_error);
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if (json_error.error == QJsonParseError::NoError && !json_doc.isNull() && !json_doc.isEmpty() && json_doc.isObject()) {
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QJsonObject json_obj = json_doc.object();
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if (!json_obj.isEmpty() && json_obj.contains("error") && json_obj.contains("error_description")) {
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QString error = json_obj["error"].toString();
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QString error_description = json_obj["error_description"].toString();
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login_errors_ << QString("Authentication failure: %1 (%2)").arg(error).arg(error_description);
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}
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}
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if (login_errors_.isEmpty()) {
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if (reply->error() != QNetworkReply::NoError) {
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login_errors_ << QString("%1 (%2)").arg(reply->errorString()).arg(reply->error());
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}
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else {
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login_errors_ << QString("Received HTTP code %1").arg(reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt());
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}
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}
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AuthError();
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return;
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}
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}
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QByteArray data = reply->readAll();
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qLog(Debug) << data;
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QJsonParseError json_error;
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QJsonDocument json_doc = QJsonDocument::fromJson(data, &json_error);
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if (json_error.error != QJsonParseError::NoError) {
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AuthError("Authentication reply from server missing Json data.");
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return;
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}
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if (json_doc.isEmpty()) {
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AuthError("Authentication reply from server has empty Json document.");
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return;
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}
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if (!json_doc.isObject()) {
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AuthError("Authentication reply from server has Json document that is not an object.", json_doc);
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return;
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}
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QJsonObject json_obj = json_doc.object();
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if (json_obj.isEmpty()) {
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AuthError("Authentication reply from server has empty Json object.", json_doc);
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return;
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}
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if (!json_obj.contains("access_token")) {
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AuthError("Authentication reply from server is missing access token.", json_obj);
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return;
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}
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access_token_ = json_obj["access_token"].toString();
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QSettings s;
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s.beginGroup(kSettingsGroup);
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s.setValue("access_token", access_token_);
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s.endGroup();
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qLog(Debug) << "Spotify: Authentication was successful, got access token" << access_token_;
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emit AuthenticationComplete(true);
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emit AuthenticationSuccess();
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}
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bool SpotifyCoverProvider::StartSearch(const QString &artist, const QString &album, const QString &title, const int id) {
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if (access_token_.isEmpty()) return false;
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QString type;
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QString query;
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QString extract;
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if (album.isEmpty()) {
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type = "track";
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query = artist + " " + title;
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extract = "tracks";
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}
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else {
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type = "album";
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query = artist + " " + album;
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extract = "albums";
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}
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ParamList params = ParamList() << Param("q", query)
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<< Param("type", type)
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<< Param("limit", QString::number(kLimit));
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QUrlQuery url_query;
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for (const Param ¶m : params) {
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url_query.addQueryItem(QUrl::toPercentEncoding(param.first), QUrl::toPercentEncoding(param.second));
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}
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QUrl url(kApiUrl + QString("/search"));
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url.setQuery(url_query);
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QNetworkRequest req(url);
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req.setAttribute(QNetworkRequest::FollowRedirectsAttribute, true);
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req.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
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req.setRawHeader("Authorization", "Bearer " + access_token_.toUtf8());
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QNetworkReply *reply = network_->get(req);
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connect(reply, &QNetworkReply::finished, [=] { HandleSearchReply(reply, id, extract); });
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return true;
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}
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void SpotifyCoverProvider::CancelSearch(const int id) { Q_UNUSED(id); }
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QByteArray SpotifyCoverProvider::GetReplyData(QNetworkReply *reply) {
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QByteArray data;
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if (reply->error() == QNetworkReply::NoError && reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == 200) {
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data = reply->readAll();
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}
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else {
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if (reply->error() != QNetworkReply::NoError && reply->error() < 200) {
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// This is a network error, there is nothing more to do.
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Error(QString("%1 (%2)").arg(reply->errorString()).arg(reply->error()));
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}
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else {
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data = reply->readAll();
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QJsonParseError parse_error;
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QJsonDocument json_doc = QJsonDocument::fromJson(data, &parse_error);
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QString error;
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if (parse_error.error == QJsonParseError::NoError && !json_doc.isEmpty() && json_doc.isObject()) {
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QJsonObject json_obj = json_doc.object();
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if (!json_obj.isEmpty() && json_obj.contains("error") && json_obj["error"].isObject()) {
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QJsonObject obj_error = json_obj["error"].toObject();
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if (obj_error.contains("status") && obj_error.contains("message")) {
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int status = obj_error["status"].toInt();
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QString message = obj_error["message"].toString();
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error = QString("%1 (%2)").arg(message).arg(status);
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}
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}
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}
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if (error.isEmpty()) {
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if (reply->error() != QNetworkReply::NoError) {
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if (reply->error() == 204) access_token_.clear();
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error = QString("%1 (%2)").arg(reply->errorString()).arg(reply->error());
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}
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else {
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error = QString("Received HTTP code %1").arg(reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt());
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}
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}
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Error(error);
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}
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return QByteArray();
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}
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return data;
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}
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QJsonObject SpotifyCoverProvider::ExtractJsonObj(const QByteArray &data) {
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QJsonParseError json_error;
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QJsonDocument json_doc = QJsonDocument::fromJson(data, &json_error);
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if (json_error.error != QJsonParseError::NoError) {
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Error(QString("Failed to parse json data: %1").arg(json_error.errorString()));
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return QJsonObject();
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}
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if (json_doc.isEmpty()) {
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Error("Received empty Json document.", data);
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return QJsonObject();
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}
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if (!json_doc.isObject()) {
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Error("Json document is not an object.", json_doc);
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return QJsonObject();
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}
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QJsonObject json_obj = json_doc.object();
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if (json_obj.isEmpty()) {
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Error("Received empty Json object.", json_doc);
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return QJsonObject();
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}
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return json_obj;
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}
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void SpotifyCoverProvider::HandleSearchReply(QNetworkReply *reply, const int id, const QString &extract) {
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reply->deleteLater();
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QByteArray data = GetReplyData(reply);
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if (data.isEmpty()) {
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emit SearchFinished(id, CoverSearchResults());
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return;
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}
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QJsonObject json_obj = ExtractJsonObj(data);
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if (json_obj.isEmpty()) {
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emit SearchFinished(id, CoverSearchResults());
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return;
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}
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if (!json_obj.contains(extract) || !json_obj[extract].isObject()) {
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Error(QString("Json object is missing %1 object.").arg(extract), json_obj);
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emit SearchFinished(id, CoverSearchResults());
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return;
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}
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json_obj = json_obj[extract].toObject();
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if (!json_obj.contains("items") || !json_obj["items"].isArray()) {
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Error(QString("%1 object is missing items array.").arg(extract), json_obj);
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emit SearchFinished(id, CoverSearchResults());
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return;
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}
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QJsonArray array_items = json_obj["items"].toArray();
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if (array_items.isEmpty()) {
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emit SearchFinished(id, CoverSearchResults());
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return;
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}
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CoverSearchResults results;
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for (const QJsonValue &value_item : array_items) {
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if (!value_item.isObject()) {
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continue;
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}
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QJsonObject obj_item = value_item.toObject();
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QJsonObject obj_album = obj_item;
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if (obj_item.contains("album") && obj_item["album"].isObject()) {
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obj_album = obj_item["album"].toObject();
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}
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if (!obj_album.contains("artists") || !obj_album.contains("name") || !obj_album.contains("images") || !obj_album["artists"].isArray() || !obj_album["images"].isArray()) {
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continue;
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}
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QJsonArray array_artists = obj_album["artists"].toArray();
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QJsonArray array_images = obj_album["images"].toArray();
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QString album = obj_album["name"].toString();
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QStringList artists;
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for (const QJsonValue &value_artist : array_artists) {
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if (!value_artist.isObject()) continue;
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QJsonObject obj_artist = value_artist.toObject();
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if (!obj_artist.contains("name")) continue;
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artists << obj_artist["name"].toString();
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}
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for (const QJsonValue &value_image : array_images) {
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if (!value_image.isObject()) continue;
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QJsonObject obj_image = value_image.toObject();
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if (!obj_image.contains("url") || !obj_image.contains("width") || !obj_image.contains("height")) continue;
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int width = obj_image["width"].toInt();
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int height = obj_image["height"].toInt();
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if (width < 300 || height < 300) continue;
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QUrl url(obj_image["url"].toString());
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CoverSearchResult result;
|
|
result.album = album;
|
|
result.image_url = url;
|
|
if (!artists.isEmpty()) result.artist = artists.first();
|
|
results << result;
|
|
}
|
|
|
|
}
|
|
emit SearchFinished(id, results);
|
|
|
|
}
|
|
|
|
void SpotifyCoverProvider::AuthError(const QString &error, const QVariant &debug) {
|
|
|
|
if (!error.isEmpty()) login_errors_ << error;
|
|
|
|
for (const QString &e : login_errors_) Error(e);
|
|
if (debug.isValid()) qLog(Debug) << debug;
|
|
|
|
emit AuthenticationFailure(login_errors_);
|
|
emit AuthenticationComplete(false, login_errors_);
|
|
|
|
login_errors_.clear();
|
|
|
|
}
|
|
|
|
void SpotifyCoverProvider::Error(const QString &error, const QVariant &debug) {
|
|
|
|
qLog(Error) << "Spotify:" << error;
|
|
if (debug.isValid()) qLog(Debug) << debug;
|
|
|
|
}
|