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/*
* Copyright 2003-2020 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "QobuzInputPlugin.hxx"
#include "QobuzClient.hxx"
#include "QobuzTrackRequest.hxx"
#include "QobuzTagScanner.hxx"
#include "CurlInputPlugin.hxx"
#include "PluginUnavailable.hxx"
#include "input/ProxyInputStream.hxx"
#include "input/FailingInputStream.hxx"
#include "input/InputPlugin.hxx"
#include "config/Block.hxx"
#include "lib/crypto/MD5.hxx"
#include "thread/Mutex.hxx"
#include "util/StringCompare.hxx"
#include <memory>
static QobuzClient *qobuz_client;
class QobuzInputStream final
: public ProxyInputStream, QobuzSessionHandler, QobuzTrackHandler {
const std::string track_id;
std::unique_ptr<QobuzTrackRequest> track_request;
std::exception_ptr error;
public:
QobuzInputStream(const char *_uri, const char *_track_id,
Mutex &_mutex) noexcept
:ProxyInputStream(_uri, _mutex),
track_id(_track_id)
{
qobuz_client->AddLoginHandler(*this);
}
~QobuzInputStream() override {
qobuz_client->RemoveLoginHandler(*this);
}
/* virtual methods from InputStream */
void Check() override {
if (error)
std::rethrow_exception(error);
}
private:
void Failed(const std::exception_ptr& e) {
SetInput(std::make_unique<FailingInputStream>(GetURI(), e,
mutex));
}
/* virtual methods from QobuzSessionHandler */
void OnQobuzSession() noexcept override;
/* virtual methods from QobuzTrackHandler */
void OnQobuzTrackSuccess(std::string url) noexcept override;
void OnQobuzTrackError(std::exception_ptr error) noexcept override;
};
void
QobuzInputStream::OnQobuzSession() noexcept
{
const std::lock_guard<Mutex> protect(mutex);
try {
const auto session = qobuz_client->GetSession();
QobuzTrackHandler &h = *this;
track_request = std::make_unique<QobuzTrackRequest>(*qobuz_client,
session,
track_id.c_str(),
h);
track_request->Start();
} catch (...) {
Failed(std::current_exception());
}
}
void
QobuzInputStream::OnQobuzTrackSuccess(std::string url) noexcept
{
const std::lock_guard<Mutex> protect(mutex);
track_request.reset();
try {
SetInput(OpenCurlInputStream(url.c_str(), {},
mutex));
} catch (...) {
Failed(std::current_exception());
}
}
void
QobuzInputStream::OnQobuzTrackError(std::exception_ptr e) noexcept
{
const std::lock_guard<Mutex> protect(mutex);
track_request.reset();
Failed(e);
}
static void
InitQobuzInput(EventLoop &event_loop, const ConfigBlock &block)
{
GlobalInitMD5();
const char *base_url = block.GetBlockValue("base_url",
"http://www.qobuz.com/api.json/0.2/");
const char *app_id = block.GetBlockValue("app_id");
if (app_id == nullptr)
throw PluginUnconfigured("No Qobuz app_id configured");
const char *app_secret = block.GetBlockValue("app_secret");
if (app_secret == nullptr)
throw PluginUnconfigured("No Qobuz app_secret configured");
const char *device_manufacturer_id = block.GetBlockValue("device_manufacturer_id",
"df691fdc-fa36-11e7-9718-635337d7df8f");
const char *username = block.GetBlockValue("username");
const char *email = block.GetBlockValue("email");
if (username == nullptr && email == nullptr)
throw PluginUnconfigured("No Qobuz username configured");
const char *password = block.GetBlockValue("password");
if (password == nullptr)
throw PluginUnconfigured("No Qobuz password configured");
const char *format_id = block.GetBlockValue("format_id", "5");
qobuz_client = new QobuzClient(event_loop, base_url,
app_id, app_secret,
device_manufacturer_id,
username, email, password,
format_id);
}
static void
FinishQobuzInput()
{
delete qobuz_client;
}
gcc_pure
static const char *
ExtractQobuzTrackId(const char *uri)
{
// TODO: what's the standard "qobuz://" URI syntax?
const char *track_id = StringAfterPrefix(uri, "qobuz://track/");
if (track_id == nullptr)
return nullptr;
if (*track_id == 0)
return nullptr;
return track_id;
}
static InputStreamPtr
OpenQobuzInput(const char *uri, Mutex &mutex)
{
assert(qobuz_client != nullptr);
const char *track_id = ExtractQobuzTrackId(uri);
if (track_id == nullptr)
return nullptr;
// TODO: validate track_id
return std::make_unique<QobuzInputStream>(uri, track_id, mutex);
}
static std::unique_ptr<RemoteTagScanner>
ScanQobuzTags(const char *uri, RemoteTagHandler &handler)
{
assert(qobuz_client != nullptr);
const char *track_id = ExtractQobuzTrackId(uri);
if (track_id == nullptr)
return nullptr;
return std::make_unique<QobuzTagScanner>(*qobuz_client, track_id,
handler);
}
static constexpr const char *qobuz_prefixes[] = {
"qobuz://",
nullptr
};
const InputPlugin qobuz_input_plugin = {
"qobuz",
qobuz_prefixes,
InitQobuzInput,
FinishQobuzInput,
OpenQobuzInput,
nullptr,
ScanQobuzTags,
};
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