/*!
* Обработка запроса пользователя на создание нового фида.
*
* Эта функция вызывается \b post запросом содержащим только имя фида.
*/
FeedReply NodeFeeds::add()
{
FeedReply reply(Notice::OK);
const QString &name = m_packet->text();
if (name.contains(LC('*')) || name.contains(LC('/')) || name.contains(LC(' ')))
return Notice::BadRequest;
FeedPtr feed = m_channel->feed(name, false);
if (!feed) {
feed = m_channel->feed(name, true, false);
if (!feed)
return Notice::InternalError;
feed->head().acl().add(m_user->id());
reply.status = FeedStorage::save(feed);
}
else
FeedStorage::clone(feed);
reply.status = FeedStorage::save(feed);
if (reply.status == Notice::OK)
reply.date = feed->head().date();
return reply;
}
/*!
* Определение доступных прав пользователя, для определения какие действия над сообщением возможны.
*/
int HistoryChatView::permissions(const MessageRecord &record) const
{
if (!record.id)
return NoPermissions;
FeedPtr messages = ChatClient::server()->feed(FEED_NAME_MESSAGES, false);
if (!messages)
return NoPermissions;
const QVariantMap data = messages->data();
const int flags = data.value(MESSAGES_FEED_EDITABLE_KEY, DefaultEditFlags).toInt();
const bool timeout = (qAbs(ChatClient::date() - record.date) / 1000) > data.value(MESSAGES_FEED_TIMEOUT_KEY, DefaultTimeOut).toInt();
if (record.senderId == ChatClient::id() && (flags & SelfEdit) && !timeout)
return Remove | Modify;
if (ChatId(record.destId).type() != ChatId::ChannelId)
return NoPermissions;
const int acl = ClientFeeds::match(ChatClient::channels()->get(record.destId), ChatClient::channel());
if ((acl & Acl::SpecialWrite) || (acl & Acl::Edit)) {
int out = 0;
if (flags & ModeratorRemove) out |= Remove;
if (flags & ModeratorEdit) out |= Modify;
return out;
}
return NoPermissions;
}
bool ProfileField::apply(const QVariant &value)
{
FeedPtr feed = ChatClient::channel()->feed(FEED_NAME_PROFILE, false);
if (!feed)
return false;
if (feed->data().value(m_field) == value)
return false;
return ClientFeeds::post(ChatClient::id(), FEED_NAME_PROFILE + LC('/') + m_field, value, Feed::Echo | Feed::Share | Feed::Broadcast);
}
/*!
* Переопределение проверки прав доступа.
*
* Этот фид использует права доступа фида FEED_ACL.
*/
bool NodeInfoFeed::can(Channel *channel, int acl) const
{
if (!channel && acl != Acl::Read)
return false;
FeedPtr feed = m_header.channel()->feed(FEED_NAME_ACL, false, false);
if (feed)
return feed->can(channel, acl);
return Feed::can(channel, acl);
}
/*!
* Служебная функция получения фида.
*
* На фид установляется маска прав доступа \p mask и если фид не существует добавляется владелец фида.
*/
FeedPtr Hosts::feed(const QString &name, int mask) const
{
FeedPtr feed = m_channel->feed(name, false);
if (!feed) {
feed = m_channel->feed(name, true, false);
feed->head().acl().add(m_channel->id());
}
feed->head().acl().setMask(mask);
return feed;
}
void ProfileField::reload()
{
FeedPtr feed = ChatClient::channel()->feed(FEED_NAME_PROFILE, false);
if (!feed)
return;
QVariant data = feed->data().value(m_field);
if (data.isNull())
return;
setData(data);
}
/*!
* Чтение нового входящего сообщения.
*/
bool NodeMessages::read(PacketReader *reader)
{
if (ChatId(reader->sender()).type() != ChatId::UserId)
return cleanup();
m_sender = Ch::channel(reader->sender(), ChatId::UserId);
if (!m_sender)
return cleanup();
MessageNotice packet(m_type, reader);
m_packet = &packet;
const qint64 date = m_packet->date();
FeedEvent *event = createEvent();
if (event->status != Notice::OK) {
reject(event->status);
FeedEvents::start(event);
return cleanup();
}
if (packet.direction() == Notice::Internal) {
if (m_packet->command() == LS("ping"))
pong(date);
Core::i()->route(m_dest);
delete event;
return cleanup();
}
FeedPtr feed = m_dest->feed(FEED_NAME_MESSAGES, true, false);
event->diffTo = event->date;
event->date = m_packet->date();
if (m_dest->type() == ChatId::UserId && m_dest->status().value() == Status::Offline) {
event->status = Notice::ChannelOffline;
reject(event->status);
NodeMessagesDB::add(packet, event->status);
Ch::gc(m_dest);
}
else {
if (feed->get(MESSAGES_FEED_LOGGING_KEY).status == Notice::OK)
NodeMessagesDB::add(packet);
Core::i()->route(m_dest);
}
FeedStorage::save(feed, m_packet->date());
FeedEvents::start(event);
return cleanup();
}
/*!
* Фиксация события обновления фида \b hosts и отправка уведомления об этом.
*
* \param host Информация о подключении.
* \param method \b post если пользователь подключился или \b put если отключился.
* \param socket Номер сокета подключения.
*/
void Hosts::updateHostsFeed(HostInfo host, const QString &method, quint64 socket)
{
m_date = DateTime::utc();
host->date = m_date;
FeedPtr hosts = feed();
FeedEvent *event = new FeedEvent(m_channel->id(), m_channel->id(), method);
event->name = FEED_NAME_HOSTS;
event->diffTo = hosts->head().date();
event->date = m_date;
event->status = Notice::OK;
event->path = SimpleID::encode(host->hostId);
event->socket = socket;
DataBase::add(host);
FeedStorage::save(feed(), m_date);
FeedEvents::start(event);
}
/*!
* Универсальный метод для отдачи тела фида.
*/
bool FeedHandler::serveFeed(ChatChannel channel, const QString &feedName)
{
if (!ifMethodAllowed())
return true;
if (!channel || !channel->feeds().all().contains(feedName)) {
setNoStore();
m_response->writeHead(Tufao::HttpServerResponse::NOT_FOUND);
m_response->end();
return true;
}
FeedPtr feed = channel->feed(feedName);
qint64 date = feed->head().date();
RestReplyCache &cache = m_cache[channel->id() + feedName.toUtf8()];
if (cache.date != date) {
cache.date = date;
cache.etag = etag(date, m_path.toUtf8());
cache.body = JSON::generate(feed->feed());
}
setLastModified(date);
setETag(cache.etag);
setNoCache();
if (!ifModified(cache.etag)) {
m_response->writeHead(Tufao::HttpServerResponse::NOT_MODIFIED);
m_response->end();
return true;
}
m_response->writeHead(Tufao::HttpServerResponse::OK);
if (m_request->method() != "HEAD") {
setContentLength(cache.body.size());
m_response->end(cache.body);
}
else
m_response->end();
return true;
}
ChannelIndexData::ChannelIndexData(ChatChannel channel)
: count(0)
, options(NoOptions)
, visibility(0)
, name(channel->name())
{
FeedPtr feed = channel->feed(FEED_NAME_INFO, false);
if (!feed)
return;
visibility = feed->data().value(INFO_FEED_VISIBILITY_KEY, 0).toInt();
if (visibility < 0)
return;
if (channel->permanent())
options |= Permanent;
id = channel->id();
count = channel->channels().size();
title = feed->data().value(INFO_FEED_TITLE_KEY).toMap().value(INFO_FEED_TEXT_KEY).toString();
if (feed->data().value(INFO_FEED_PINNED_KEY, false).toBool())
options |= Pinned;
FeedPtr acl = channel->feed(FEED_NAME_ACL, false);
if (acl && AclValue::match(acl.data(), 0) == 0)
options |= Private;
}
/*!
* Фильтрация сообщения.
*
* \return Notice::OK если всё в порядке или другое значение, если сообщение должно быть отклонено.
*/
int NodeMessages::filter()
{
if (!m_dest)
return Notice::NotFound;
if (m_dest->type() == ChatId::ServerId)
return Notice::BadRequest;
if (m_dest->type() == ChatId::ChannelId && !m_dest->channels().contains(m_sender->id()))
return Notice::BadRequest;
if (!m_dest->canWrite(m_sender))
return Notice::Forbidden;
if (m_dest->type() == ChatId::ChannelId) {
const FeedPtr feed = m_dest->feed(FEED_NAME_INFO, true, false);
if (m_packet->command() == LS("image") && !feed->data().value(INFO_FEED_IMAGES_KEY, true).toBool())
return Notice::Forbidden;
}
return Notice::OK;
}
/*!
* Фиксация события обновления фида \b user и отправка уведомления об этом.
*/
void Hosts::updateUserFeed(HostInfo host, const QString &method, quint64 socket)
{
FeedPtr user = this->user();
FeedEvent *event = new FeedEvent(m_channel->id(), m_channel->id(), method);
if (!user->head().f().isEmpty()) {
event->broadcast = Sockets::all(Ch::channel(m_channel->id()), true);
if (method == FEED_METHOD_POST)
event->broadcast.removeAll(socket);
}
event->name = FEED_NAME_USER;
event->diffTo = user->head().date();
event->date = m_date;
event->status = Notice::OK;
event->path = SimpleID::encode(host->hostId);
event->socket = socket;
user->data()[LS("last")] = event->path;
FeedStorage::save(user, m_date);
FeedEvents::start(event);
}
inline bool FeedMergeGroup::addFeed(const FeedPtr& feed) {
if (feed->miniMergeType() == FeedMergeReplace) {
_feedList.push_front(feed);
while (_feedList.front()->feed != _feedList.back()->feed) {
_feedList.pop_back();
}
return updateWeight();
}
// for append --
_feedList.push_front(feed);
for (FeedList::iterator it = ++_feedList.begin(); it != _feedList.end();) {
if ((*it)->isValid()) {
++it;
} else {
it = _feedList.erase(it);
}
}
if (_feedList.size() > 5) {
_feedList.pop_back();
}
return updateWeight();
}
void UserFeedSet::_addFeed(const FeedPtr& feed, const FeedConfigPtr& config) {
// MCE_DEBUG("UserFeedSet::_addFeed "<<"feed="<<feed->feed<<" merge="<<feed->merge);
StypeMergeIndex& index = _mergeGroupSet.get<0> ();
StypeMergeIndex::iterator it = index.find(boost::make_tuple(
feed->smallType(), feed->merge));
if (it != index.end()) {
MCE_DEBUG("UserFeedSet::addFeed --> find in map");
FeedMergeGroupPtr g = (*it);
if (config && config->updateTime == 0) {
feed->time = (*it)->timestamp();
}
g->addFeed(feed);
index.replace(it, g);
} else {
MCE_DEBUG("UserFeedSet::addFeed --> not in map");
FeedMergeGroupPtr g = new FeedMergeGroup(feed);
_mergeGroupSet.insert(g);
}
_miniTime = _miniTime < feed->time ? _miniTime : feed->time;
}
/*!
* Базовая функция совершения операции над фидом.
*
* \param channel Канал владелец фида.
* \param method Метод \sa Methods.
* \param name Имя фида с опциональным путём запроса.
* \param sender Канал создавший запрос.
* \param json Данные запроса.
*/
FeedReply FeedsCore::request(ServerChannel *channel, const QString &method, const QString &name, ServerChannel *sender, const QVariantMap &json)
{
if (!channel || !sender)
return Notice::InternalError;
const QPair<QString, QString> split = FeedNotice::split(name);
FeedPtr feed = channel->feed(split.first, false);
if (!feed)
return Notice::NotFound;
FeedReply reply(Notice::InternalError);
const int cmd = methodToInt(method);
FeedEvent *event = new FeedEvent(channel->id(), sender->id(), method);
event->request = json;
event->name = split.first;
event->path = split.second;
event->date = feed->head().date();
if (!feed->can(sender, Acl::Read))
return done(event, Notice::Forbidden);
if (cmd != Get && !feed->can(sender, Acl::Write))
return done(event, Notice::Forbidden);
switch (cmd) {
case Get:
reply = feed->get(event->path, json, sender);
break;
case Post:
reply = feed->post(event->path, json, sender);
break;
case Put:
reply = feed->put(event->path, json, sender);
break;
case Delete:
reply = feed->del(event->path, sender);
break;
}
if (cmd != Get && reply.status == Notice::OK) {
const int options = json.value(FEED_KEY_OPTIONS).toInt();
event->diffTo = event->date;
event->date = reply.date;
if (reply.date)
FeedStorage::save(feed, reply.date);
if (options & Feed::Broadcast) {
if (channel->type() == SimpleID::ServerId) {
const QList<QByteArray> channels = m_self->m_subscription.value(event->name);
QList<quint64> sockets;
foreach (const QByteArray &id, channels) {
ChatChannel user = Ch::channel(id, SimpleID::UserId, false);
if (user)
Sockets::merge(sockets, user->sockets());
}
event->broadcast = sockets;
}
else
event->broadcast = Sockets::channel(channel);
}