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|
/******************************************************************************
* Copyright (C) 2015 Felix Rohrbach <kde@fxrh.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "connection.h"
#include "connectiondata.h"
#include "user.h"
#include "events/event.h"
#include "room.h"
#include "jobs/generated/login.h"
#include "jobs/generated/logout.h"
#include "jobs/generated/receipts.h"
#include "jobs/generated/leaving.h"
#include "jobs/sendeventjob.h"
#include "jobs/joinroomjob.h"
#include "jobs/roommessagesjob.h"
#include "jobs/syncjob.h"
#include "jobs/mediathumbnailjob.h"
#include "jobs/downloadfilejob.h"
#include <QtNetwork/QDnsLookup>
#include <QtCore/QFile>
#include <QtCore/QDir>
#include <QtCore/QFileInfo>
#include <QtCore/QStandardPaths>
#include <QtCore/QStringBuilder>
#include <QtCore/QElapsedTimer>
#include <QtCore/QRegularExpression>
#include <QtCore/QCoreApplication>
using namespace QMatrixClient;
class Connection::Private
{
public:
explicit Private(std::unique_ptr<ConnectionData>&& connection)
: data(move(connection))
{ }
Q_DISABLE_COPY(Private)
Private(Private&&) = delete;
Private operator=(Private&&) = delete;
Connection* q = nullptr;
std::unique_ptr<ConnectionData> data;
// A complex key below is a pair of room name and whether its
// state is Invited. The spec mandates to keep Invited room state
// separately so we should, e.g., keep objects for Invite and
// Leave state of the same room.
QHash<QPair<QString, bool>, Room*> roomMap;
QVector<QString> roomIdsToForget;
QHash<QString, User*> userMap;
QString userId;
SyncJob* syncJob = nullptr;
bool cacheState = true;
void connectWithToken(const QString& user, const QString& accessToken,
const QString& deviceId);
};
Connection::Connection(const QUrl& server, QObject* parent)
: QObject(parent)
, d(std::make_unique<Private>(std::make_unique<ConnectionData>(server)))
{
d->q = this; // All d initialization should occur before this line
}
Connection::Connection(QObject* parent)
: Connection({}, parent)
{ }
Connection::~Connection()
{
qCDebug(MAIN) << "deconstructing connection object for" << d->userId;
stopSync();
}
void Connection::resolveServer(const QString& mxidOrDomain)
{
// At this point we may have something as complex as
// @username:[IPv6:address]:port, or as simple as a plain domain name.
// Try to parse as an FQID; if there's no @ part, assume it's a domain name.
QRegularExpression parser(
"^(@.+?:)?" // Optional username (allow everything for compatibility)
"((\\[[^]]+\\]|[^:@]+)" // Either IPv6 address or hostname/IPv4 address
"(:\\d{1,5})?)$", // Optional port
QRegularExpression::UseUnicodePropertiesOption); // Because asian digits
auto match = parser.match(mxidOrDomain);
QUrl maybeBaseUrl = QUrl::fromUserInput(match.captured(2));
if (!match.hasMatch() || !maybeBaseUrl.isValid())
{
emit resolveError(
tr("%1 is not a valid homeserver address")
.arg(maybeBaseUrl.toString()));
return;
}
maybeBaseUrl.setScheme("https"); // Instead of the Qt-default "http"
if (maybeBaseUrl.port() != -1)
{
setHomeserver(maybeBaseUrl);
emit resolved();
return;
}
auto domain = maybeBaseUrl.host();
qCDebug(MAIN) << "Resolving server" << domain;
// Check if the Matrix server has a dedicated service record.
QDnsLookup* dns = new QDnsLookup();
dns->setType(QDnsLookup::SRV);
dns->setName("_matrix._tcp." + domain);
connect(dns, &QDnsLookup::finished, [this,dns,maybeBaseUrl]() {
QUrl baseUrl { maybeBaseUrl };
if (dns->error() == QDnsLookup::NoError &&
dns->serviceRecords().isEmpty())
{
auto record = dns->serviceRecords().front();
baseUrl.setHost(record.target());
baseUrl.setPort(record.port());
qCDebug(MAIN) << "SRV record for" << maybeBaseUrl.host()
<< "is" << baseUrl.authority();
} else {
qCDebug(MAIN) << baseUrl.host() << "doesn't have SRV record"
<< dns->name() << "- using the hostname as is";
}
setHomeserver(baseUrl);
emit resolved();
dns->deleteLater();
});
dns->lookup();
}
void Connection::connectToServer(const QString& user, const QString& password,
const QString& initialDeviceName,
const QString& deviceId)
{
checkAndConnect(user,
[=] {
doConnectToServer(user, password, initialDeviceName, deviceId);
});
}
void Connection::doConnectToServer(const QString& user, const QString& password,
const QString& initialDeviceName,
const QString& deviceId)
{
auto loginJob = callApi<LoginJob>(QStringLiteral("m.login.password"),
user, /*medium*/ "", /*address*/ "", password, /*token*/ "",
deviceId, initialDeviceName);
connect(loginJob, &BaseJob::success, this,
[this, loginJob] {
d->connectWithToken(loginJob->userId(), loginJob->accessToken(),
loginJob->deviceId());
});
connect(loginJob, &BaseJob::failure, this,
[this, loginJob] {
emit loginError(loginJob->errorString());
});
}
void Connection::connectWithToken(const QString& userId,
const QString& accessToken,
const QString& deviceId)
{
checkAndConnect(userId,
[=] { d->connectWithToken(userId, accessToken, deviceId); });
}
void Connection::Private::connectWithToken(const QString& user,
const QString& accessToken,
const QString& deviceId)
{
userId = user;
data->setToken(accessToken.toLatin1());
data->setDeviceId(deviceId);
qCDebug(MAIN) << "Using server" << data->baseUrl() << "by user"
<< userId
<< "from device" << deviceId;
emit q->connected();
}
void Connection::checkAndConnect(const QString& userId,
std::function<void()> connectFn)
{
if (d->data->baseUrl().isValid())
{
connectFn();
return;
}
// Not good to go, try to fix the homeserver URL.
if (userId.startsWith('@') && userId.indexOf(':') != -1)
{
// The below construct makes a single-shot connection that triggers
// on the signal and then self-disconnects.
// NB: doResolveServer can emit resolveError, so this is a part of
// checkAndConnect function contract.
QMetaObject::Connection connection;
connection = connect(this, &Connection::homeserverChanged,
this, [=] { connectFn(); disconnect(connection); });
resolveServer(userId);
} else
emit resolveError(
tr("%1 is an invalid homeserver URL")
.arg(d->data->baseUrl().toString()));
}
void Connection::logout()
{
auto job = callApi<LogoutJob>();
connect( job, &LogoutJob::success, this, [this] {
stopSync();
emit loggedOut();
});
}
void Connection::sync(int timeout)
{
if (d->syncJob)
return;
// Raw string: http://en.cppreference.com/w/cpp/language/string_literal
const QString filter { R"({"room": { "timeline": { "limit": 100 } } })" };
auto job = d->syncJob =
callApi<SyncJob>(d->data->lastEvent(), filter, timeout);
connect( job, &SyncJob::success, [this, job] {
onSyncSuccess(job->takeData());
d->syncJob = nullptr;
emit syncDone();
});
connect( job, &SyncJob::retryScheduled, this, &Connection::networkError);
connect( job, &SyncJob::failure, [this, job] {
d->syncJob = nullptr;
if (job->error() == BaseJob::ContentAccessError)
emit loginError(job->errorString());
else
emit syncError(job->errorString());
});
}
void Connection::onSyncSuccess(SyncData &&data) {
d->data->setLastEvent(data.nextBatch());
for( auto&& roomData: data.takeRoomData() )
{
const auto forgetIdx = d->roomIdsToForget.indexOf(roomData.roomId);
if (forgetIdx != -1)
{
d->roomIdsToForget.removeAt(forgetIdx);
if (roomData.joinState == JoinState::Leave)
{
qDebug(MAIN) << "Room" << roomData.roomId
<< "has been forgotten, ignoring /sync response for it";
continue;
}
qWarning(MAIN) << "Room" << roomData.roomId
<< "has just been forgotten but /sync returned it in"
<< toCString(roomData.joinState)
<< "state - suspiciously fast turnaround";
}
if ( auto* r = provideRoom(roomData.roomId, roomData.joinState) )
r->updateData(std::move(roomData));
QCoreApplication::instance()->processEvents();
}
}
void Connection::stopSync()
{
if (d->syncJob)
{
d->syncJob->abandon();
d->syncJob = nullptr;
}
}
void Connection::postMessage(Room* room, const QString& type, const QString& message) const
{
callApi<SendEventJob>(room->id(), type, message);
}
PostReceiptJob* Connection::postReceipt(Room* room, RoomEvent* event) const
{
return callApi<PostReceiptJob>(room->id(), "m.read", event->id());
}
JoinRoomJob* Connection::joinRoom(const QString& roomAlias)
{
auto job = callApi<JoinRoomJob>(roomAlias);
connect(job, &JoinRoomJob::success,
this, [this, job] { provideRoom(job->roomId(), JoinState::Join); });
return job;
}
void Connection::leaveRoom(Room* room)
{
callApi<LeaveRoomJob>(room->id());
}
RoomMessagesJob* Connection::getMessages(Room* room, const QString& from) const
{
return callApi<RoomMessagesJob>(room->id(), from);
}
inline auto splitMediaId(const QString& mediaId)
{
auto idParts = mediaId.split('/');
Q_ASSERT_X(idParts.size() == 2, __FUNCTION__,
("'" + mediaId +
"' doesn't look like 'serverName/localMediaId'").toLatin1());
return idParts;
}
MediaThumbnailJob* Connection::getThumbnail(const QString& mediaId, QSize requestedSize) const
{
auto idParts = splitMediaId(mediaId);
return callApi<MediaThumbnailJob>(idParts.front(), idParts.back(),
requestedSize);
}
MediaThumbnailJob* Connection::getThumbnail(const QUrl& url, QSize requestedSize) const
{
return getThumbnail(url.authority() + url.path(), requestedSize);
}
MediaThumbnailJob* Connection::getThumbnail(const QUrl& url, int requestedWidth,
int requestedHeight) const
{
return getThumbnail(url, QSize(requestedWidth, requestedHeight));
}
UploadContentJob* Connection::uploadContent(QIODevice* contentSource,
const QString& filename, const QString& contentType) const
{
return callApi<UploadContentJob>(contentSource, filename, contentType);
}
UploadContentJob* Connection::uploadFile(const QString& fileName,
const QString& contentType)
{
auto sourceFile = new QFile(fileName);
if (sourceFile->open(QIODevice::ReadOnly))
{
qCWarning(MAIN) << "Couldn't open" << sourceFile->fileName()
<< "for reading";
return nullptr;
}
return uploadContent(sourceFile, QFileInfo(*sourceFile).fileName(),
contentType);
}
GetContentJob* Connection::getContent(const QString& mediaId) const
{
auto idParts = splitMediaId(mediaId);
return callApi<GetContentJob>(idParts.front(), idParts.back());
}
GetContentJob* Connection::getContent(const QUrl& url) const
{
return getContent(url.authority() + url.path());
}
DownloadFileJob* Connection::downloadFile(const QUrl& url,
const QString& localFilename) const
{
auto mediaId = url.authority() + url.path();
auto idParts = splitMediaId(mediaId);
auto* job = callApi<DownloadFileJob>(idParts.front(), idParts.back(),
localFilename);
return job;
}
CreateRoomJob* Connection::createRoom(RoomVisibility visibility,
const QString& alias, const QString& name, const QString& topic,
const QVector<QString>& invites, const QString& presetName,
bool isDirect, bool guestsCanJoin,
const QVector<CreateRoomJob::StateEvent>& initialState,
const QVector<CreateRoomJob::Invite3pid>& invite3pids,
const QJsonObject creationContent)
{
return callApi<CreateRoomJob>(
visibility == PublishRoom ? "public" : "private", alias, name,
topic, invites, invite3pids, creationContent, initialState,
presetName, isDirect, guestsCanJoin);
}
CreateRoomJob* Connection::createDirectChat(const QString& userId,
const QString& topic, const QString& name)
{
return createRoom(UnpublishRoom, "", name, topic, {userId},
"trusted_private_chat", true);
}
ForgetRoomJob* Connection::forgetRoom(const QString& id)
{
// To forget is hard :) First we should ensure the local user is not
// in the room (by leaving it, if necessary); once it's done, the /forget
// endpoint can be called; and once this is through, the local Room object
// (if any existed) is deleted. At the same time, we still have to
// (basically immediately) return a pointer to ForgetRoomJob. Therefore
// a ForgetRoomJob is created in advance and can be returned in a probably
// not-yet-started state (it will start once /leave completes).
auto forgetJob = new ForgetRoomJob(id);
auto room = d->roomMap.value({id, false});
if (!room)
room = d->roomMap.value({id, true});
if (room && room->joinState() != JoinState::Leave)
{
auto leaveJob = room->leaveRoom();
connect(leaveJob, &BaseJob::success, this, [this, forgetJob, room] {
forgetJob->start(connectionData());
// If the matching /sync response hasn't arrived yet, mark the room
// for explicit deletion
if (room->joinState() != JoinState::Leave)
d->roomIdsToForget.push_back(room->id());
});
connect(leaveJob, &BaseJob::failure, forgetJob, &BaseJob::abandon);
}
else
forgetJob->start(connectionData());
connect(forgetJob, &BaseJob::success, this, [this, id]
{
// If the room is in the map (possibly in both forms), delete all forms.
for (auto f: {false, true})
if (auto r = d->roomMap.take({ id, f }))
{
emit aboutToDeleteRoom(r);
qCDebug(MAIN) << "Room" << id
<< "in join state" << toCString(r->joinState())
<< "will be deleted";
r->deleteLater();
}
});
return forgetJob;
}
QUrl Connection::homeserver() const
{
return d->data->baseUrl();
}
User* Connection::user(const QString& userId)
{
if( d->userMap.contains(userId) )
return d->userMap.value(userId);
auto* user = userFactory(this, userId);
d->userMap.insert(userId, user);
return user;
}
User *Connection::user()
{
if( d->userId.isEmpty() )
return nullptr;
return user(d->userId);
}
QString Connection::userId() const
{
return d->userId;
}
QString Connection::deviceId() const
{
return d->data->deviceId();
}
QString Connection::token() const
{
return accessToken();
}
QByteArray Connection::accessToken() const
{
return d->data->accessToken();
}
SyncJob* Connection::syncJob() const
{
return d->syncJob;
}
int Connection::millisToReconnect() const
{
return d->syncJob ? d->syncJob->millisToRetry() : 0;
}
QHash< QPair<QString, bool>, Room* > Connection::roomMap() const
{
// Copy-on-write-and-remove-elements is faster than copying elements one by one.
QHash< QPair<QString, bool>, Room* > roomMap = d->roomMap;
for (auto it = roomMap.begin(); it != roomMap.end(); )
{
if (it.value()->joinState() == JoinState::Leave)
it = roomMap.erase(it);
else
++it;
}
return roomMap;
}
const ConnectionData* Connection::connectionData() const
{
return d->data.get();
}
Room* Connection::provideRoom(const QString& id, JoinState joinState)
{
// TODO: This whole function is a strong case for a RoomManager class.
Q_ASSERT_X(!id.isEmpty(), __FUNCTION__, "Empty room id");
const auto roomKey = qMakePair(id, joinState == JoinState::Invite);
auto* room = d->roomMap.value(roomKey, nullptr);
if (room)
{
// Leave is a special case because in transition (5a) (see the .h file)
// joinState == room->joinState but we still have to preempt the Invite
// and emit a signal. For Invite and Join, there's no such problem.
if (room->joinState() == joinState && joinState != JoinState::Leave)
return room;
}
else
{
room = roomFactory(this, id, joinState);
if (!room)
{
qCCritical(MAIN) << "Failed to create a room" << id;
return nullptr;
}
d->roomMap.insert(roomKey, room);
emit newRoom(room);
}
if (joinState == JoinState::Invite)
{
// prev is either Leave or nullptr
auto* prev = d->roomMap.value({id, false}, nullptr);
emit invitedRoom(room, prev);
}
else
{
room->setJoinState(joinState);
// Preempt the Invite room (if any) with a room in Join/Leave state.
auto* prevInvite = d->roomMap.take({id, true});
if (joinState == JoinState::Join)
emit joinedRoom(room, prevInvite);
else if (joinState == JoinState::Leave)
emit leftRoom(room, prevInvite);
if (prevInvite)
{
qCDebug(MAIN) << "Deleting Invite state for room" << prevInvite->id();
emit aboutToDeleteRoom(prevInvite);
delete prevInvite;
}
}
return room;
}
Connection::room_factory_t Connection::roomFactory =
[](Connection* c, const QString& id, JoinState joinState)
{ return new Room(c, id, joinState); };
Connection::user_factory_t Connection::userFactory =
[](Connection* c, const QString& id) { return new User(id, c); };
QByteArray Connection::generateTxnId()
{
return d->data->generateTxnId();
}
void Connection::setHomeserver(const QUrl& url)
{
if (homeserver() == url)
return;
d->data->setBaseUrl(url);
emit homeserverChanged(homeserver());
}
static constexpr int CACHE_VERSION_MAJOR = 2;
static constexpr int CACHE_VERSION_MINOR = 0;
void Connection::saveState(const QUrl &toFile) const
{
if (!d->cacheState)
return;
QElapsedTimer et; et.start();
QFileInfo stateFile {
toFile.isEmpty() ? stateCachePath() : toFile.toLocalFile()
};
if (!stateFile.dir().exists())
stateFile.dir().mkpath(".");
QFile outfile { stateFile.absoluteFilePath() };
if (!outfile.open(QFile::WriteOnly))
{
qCWarning(MAIN) << "Error opening" << stateFile.absoluteFilePath()
<< ":" << outfile.errorString();
qCWarning(MAIN) << "Caching the rooms state disabled";
d->cacheState = false;
return;
}
QJsonObject roomObj;
{
QJsonObject rooms;
QJsonObject inviteRooms;
for (auto i : roomMap()) // Pass on rooms in Leave state
{
if (i->joinState() == JoinState::Invite)
inviteRooms.insert(i->id(), i->toJson());
else
rooms.insert(i->id(), i->toJson());
}
if (!rooms.isEmpty())
roomObj.insert("join", rooms);
if (!inviteRooms.isEmpty())
roomObj.insert("invite", inviteRooms);
}
QJsonObject rootObj;
rootObj.insert("next_batch", d->data->lastEvent());
rootObj.insert("rooms", roomObj);
QJsonObject versionObj;
versionObj.insert("major", CACHE_VERSION_MAJOR);
versionObj.insert("minor", CACHE_VERSION_MINOR);
rootObj.insert("cache_version", versionObj);
QByteArray data = QJsonDocument(rootObj).toJson(QJsonDocument::Compact);
qCDebug(MAIN) << "Writing state to file" << outfile.fileName();
outfile.write(data.data(), data.size());
qCDebug(PROFILER) << "*** Cached state for" << userId()
<< "saved in" << et.elapsed() << "ms";
}
void Connection::loadState(const QUrl &fromFile)
{
if (!d->cacheState)
return;
QElapsedTimer et; et.start();
QFile file {
fromFile.isEmpty() ? stateCachePath() : fromFile.toLocalFile()
};
if (!file.exists())
{
qCDebug(MAIN) << "No state cache file found";
return;
}
file.open(QFile::ReadOnly);
QByteArray data = file.readAll();
auto jsonDoc = QJsonDocument::fromJson(data);
auto actualCacheVersionMajor =
jsonDoc.object()
.value("cache_version").toObject()
.value("major").toInt();
if (actualCacheVersionMajor < CACHE_VERSION_MAJOR)
{
qCWarning(MAIN) << "Major version of the cache file is"
<< actualCacheVersionMajor << "but"
<< CACHE_VERSION_MAJOR
<< "required; discarding the cache";
return;
}
SyncData sync;
sync.parseJson(jsonDoc);
onSyncSuccess(std::move(sync));
qCDebug(PROFILER) << "*** Cached state for" << userId()
<< "loaded in" << et.elapsed() << "ms";
}
QString Connection::stateCachePath() const
{
auto safeUserId = userId();
safeUserId.replace(':', '_');
return QStandardPaths::writableLocation(QStandardPaths::CacheLocation)
% '/' % safeUserId % "_state.json";
}
bool Connection::cacheState() const
{
return d->cacheState;
}
void Connection::setCacheState(bool newValue)
{
if (d->cacheState != newValue)
{
d->cacheState = newValue;
emit cacheStateChanged();
}
}
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