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Fix crash when creating link to room preview

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This commit is contained in:
Nicolas Werner 2022-07-19 18:57:08 +02:00
parent 5524a2a199
commit 07bb95fbcd
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GPG key ID: C8D75E610773F2D9
5 changed files with 119 additions and 56 deletions
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91
src/Cache.cpp
View file

@ -3006,49 +3006,54 @@ Cache::getMember(const std::string &room_id, const std::string &user_id)
std::vector<RoomMember>
Cache::getMembers(const std::string &room_id, std::size_t startIndex, std::size_t len)
{
auto txn = ro_txn(env_);
auto db = getMembersDb(txn, room_id);
auto cursor = lmdb::cursor::open(txn, db);
try {
auto txn = ro_txn(env_);
auto db = getMembersDb(txn, room_id);
auto cursor = lmdb::cursor::open(txn, db);
std::size_t currentIndex = 0;
std::size_t currentIndex = 0;
const auto endIndex = std::min(startIndex + len, db.size(txn));
const auto endIndex = std::min(startIndex + len, db.size(txn));
std::vector<RoomMember> members;
std::vector<RoomMember> members;
std::string_view user_id, user_data;
while (cursor.get(user_id, user_data, MDB_NEXT)) {
if (currentIndex < startIndex) {
currentIndex += 1;
continue;
}
if (currentIndex >= endIndex)
break;
try {
MemberInfo tmp = nlohmann::json::parse(user_data).get<MemberInfo>();
members.emplace_back(RoomMember{QString::fromStdString(std::string(user_id)),
QString::fromStdString(tmp.name)});
} catch (const nlohmann::json::exception &e) {
nhlog::db()->warn("{}", e.what());
}
std::string_view user_id, user_data;
while (cursor.get(user_id, user_data, MDB_NEXT)) {
if (currentIndex < startIndex) {
currentIndex += 1;
continue;
}
if (currentIndex >= endIndex)
break;
cursor.close();
try {
MemberInfo tmp = nlohmann::json::parse(user_data).get<MemberInfo>();
members.emplace_back(RoomMember{QString::fromStdString(std::string(user_id)),
QString::fromStdString(tmp.name)});
} catch (const nlohmann::json::exception &e) {
nhlog::db()->warn("{}", e.what());
}
currentIndex += 1;
return members;
} catch (const lmdb::error &e) {
nhlog::db()->error("Failed to retrieve members from db in room {}: {}", room_id, e.what());
return {};
}
cursor.close();
return members;
}
std::vector<RoomMember>
Cache::getMembersFromInvite(const std::string &room_id, std::size_t startIndex, std::size_t len)
{
auto txn = ro_txn(env_);
std::vector<RoomMember> members;
try {
auto txn = ro_txn(env_);
std::vector<RoomMember> members;
auto db = getInviteMembersDb(txn, room_id);
auto cursor = lmdb::cursor::open(txn, db);
@ -3079,11 +3084,12 @@ Cache::getMembersFromInvite(const std::string &room_id, std::size_t startIndex,
}
cursor.close();
} catch (const lmdb::error &e) {
nhlog::db()->warn("Failed to retrieve members {}", e.what());
}
return members;
return members;
} catch (const lmdb::error &e) {
nhlog::db()->error("Failed to retrieve members from db in room {}: {}", room_id, e.what());
return {};
}
}
bool
@ -4033,17 +4039,22 @@ Cache::roomMembers(const std::string &room_id)
{
auto txn = ro_txn(env_);
std::vector<std::string> members;
std::string_view user_id, unused;
try {
std::vector<std::string> members;
std::string_view user_id, unused;
auto db = getMembersDb(txn, room_id);
auto db = getMembersDb(txn, room_id);
auto cursor = lmdb::cursor::open(txn, db);
while (cursor.get(user_id, unused, MDB_NEXT))
members.emplace_back(user_id);
cursor.close();
auto cursor = lmdb::cursor::open(txn, db);
while (cursor.get(user_id, unused, MDB_NEXT))
members.emplace_back(user_id);
cursor.close();
return members;
return members;
} catch (const lmdb::error &e) {
nhlog::db()->error("Failed to retrieve members from db in room {}: {}", room_id, e.what());
return {};
}
}
crypto::Trust

60
src/Utils.cpp
View file

@ -881,3 +881,63 @@ utils::markRoomAsDirect(QString roomid, std::vector<RoomMember> members)
});
});
}
std::vector<std::string>
utils::roomVias(const std::string &roomid)
{
std::vector<std::string> vias;
{
auto members = cache::getMembers(roomid, 0, 100);
if (!members.empty()) {
vias.push_back(http::client()->user_id().hostname());
for (const auto &m : members) {
if (vias.size() >= 4)
break;
auto user_id =
mtx::identifiers::parse<mtx::identifiers::User>(m.user_id.toStdString());
auto server = user_id.hostname();
if (std::find(begin(vias), end(vias), server) == vias.end())
vias.push_back(server);
}
}
}
if (vias.empty()) {
auto members = cache::getMembersFromInvite(roomid, 0, 100);
if (!members.empty()) {
vias.push_back(http::client()->user_id().hostname());
for (const auto &m : members) {
if (vias.size() >= 4)
break;
auto user_id =
mtx::identifiers::parse<mtx::identifiers::User>(m.user_id.toStdString());
auto server = user_id.hostname();
if (std::find(begin(vias), end(vias), server) == vias.end())
vias.push_back(server);
}
}
}
if (vias.empty()) {
auto parents = cache::client()->getParentRoomIds(roomid);
for (const auto &p : parents) {
auto child =
cache::client()->getStateEvent<mtx::events::state::space::Child>(p, roomid);
if (child && child->content.via)
vias.insert(vias.end(), child->content.via->begin(), child->content.via->end());
}
std::sort(begin(vias), end(vias));
auto last = std::unique(begin(vias), end(vias));
vias.erase(last, end(vias));
// if (vias.size()> 3)
// vias.erase(begin(vias)+3, end(vias));
}
return vias;
}

3
src/Utils.h
View file

@ -311,4 +311,7 @@ removeDirectFromRoom(QString roomid);
void
markRoomAsDirect(QString roomid, std::vector<RoomMember> members);
std::vector<std::string>
roomVias(const std::string &roomid);
}

11
src/timeline/RoomlistModel.cpp
View file

@ -645,15 +645,8 @@ void
RoomlistModel::joinPreview(QString roomid)
{
if (previewedRooms.contains(roomid)) {
std::vector<std::string> vias;
auto parents = cache::client()->getParentRoomIds(roomid.toStdString());
for (const auto &p : parents) {
auto child = cache::client()->getStateEvent<mtx::events::state::space::Child>(
p, roomid.toStdString());
if (child && child->content.via)
vias.insert(vias.end(), child->content.via->begin(), child->content.via->end());
}
ChatPage::instance()->joinRoomVia(roomid.toStdString(), vias, false);
ChatPage::instance()->joinRoomVia(
roomid.toStdString(), utils::roomVias(roomid.toStdString()), false);
}
}
void

10
src/timeline/TimelineModel.cpp
View file

@ -1813,16 +1813,12 @@ TimelineModel::getRoomVias(const QString &roomId)
{
QStringList vias;
vias.push_back(QStringLiteral("via=%1").arg(QString(
QUrl::toPercentEncoding(QString::fromStdString(http::client()->user_id().hostname())))));
auto members = cache::getMembers(roomId.toStdString(), 0, 100);
for (const auto &m : members) {
for (const auto &m : utils::roomVias(roomId.toStdString())) {
if (vias.size() >= 4)
break;
auto user_id = mtx::identifiers::parse<mtx::identifiers::User>(m.user_id.toStdString());
QString server = QStringLiteral("via=%1").arg(
QString(QUrl::toPercentEncoding(QString::fromStdString(user_id.hostname()))));
QString server =
QStringLiteral("via=%1").arg(QString(QUrl::toPercentEncoding(QString::fromStdString(m))));
if (!vias.contains(server))
vias.push_back(server);