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2022-05-29Move some Meg/Olm session logic from Room::Private to Connection::PrivateAlexey Rusakov
Functions (Room::Private::)createOlmSession, payloadForUserDevice and sendRoomKeyToDevices don't have a lot to do with the given Room object but deal with quite a few things stored in Connection. This commit moves them to Connection::Private, exposing sendSessionKeyToDevices (the new name for sendRoomKeyToDevices) in Connection so that Room could call it from Room::P::sendMegolmSession(). While moving these over, a few additional things were adjusted: - more functions marked as const - a few functions could be moved now from Connection to Connection::Private - false slots in Connection (such as picklingMode) are moved out of the slots block - keys.yml in Matrix CS API definitions has been adjusted to match the real structure of `/claim` response (see quotient-im/matrix-spec repo); csapi/keys.h has been regenerated accordingly.
2022-05-29Refactor creation of Megolm sessions in RoomAlexey Rusakov
Notably, replace a multi-level hash map with QMultiHash and factor out Room::P::createOlmSession().
2022-05-29Cleanup and address Sonar warningsAlexey Rusakov
2022-05-29Move encryptFile/decryptFile out of EncryptedFileMetadataAlexey Rusakov
These are not operations on EncryptedFileMetadata but rather on a combination of EncryptedFileMetadata and ciphertext. If C++ had multimethods these could be bound to such a combination.
2022-05-29Cleanup and fix Sonar warningsAlexey Rusakov
2022-05-29Refactor EncryptedFile and EC::FileInfo::fileAlexey Rusakov
Besides having a misleading name (and it goes back to the spec), EncryptedFile under `file` key preempts the `url` (or `thumbnail_url`) string value so only one of the two should exist. This is a case for using std::variant<> - despite its clumsy syntax, it can actually simplify and streamline code when all the necessary bits are in place (such as conversion to JSON and getting the common piece - the URL - out of it). This commit replaces `FileInfo::url` and `FileInfo::file` with a common field `source` of type `FileSourceInfo` that is an alias for a variant type covering both underlying types; and `url()` is reintroduced as a function instead, to allow simplified access to whichever URL is available inside the variant. Oh, and EncryptedFile is EncryptedFileMetadata now, to clarify that it does not represent the file payload itself but rather the data necessary to obtain that payload.
2022-05-19Fix FTBFS without E2EEAlexey Rusakov
2022-05-19Apply suggestionsTobias Fella
2022-05-19Apply SuggestionsTobias Fella
2022-05-19Update lib/room.cppTobias Fella
Co-authored-by: Alexey Rusakov <Kitsune-Ral@users.sf.net>
2022-05-19Use list of 3-tuple instead of mapTobias Fella
2022-05-18Make database independent of {Room, User, Connection}Tobias Fella
2022-05-16Fix build failuresTobias Fella
2022-05-16FixesTobias Fella
2022-05-16More work; Update olm pickle & timestamps in database; Remove TODOsTobias Fella
2022-05-16Properly create encrypted editsTobias Fella
2022-05-16Implement sending encrypted filesTobias Fella
2022-05-16Keep log of where we send keys and send keys to new devices and usersTobias Fella
2022-05-16Save and load outgoing megolm sessionTobias Fella
2022-05-16Implement sending encrypted messagesTobias Fella
2022-05-16QOlmExpected and associated refactoringAlexey Rusakov
As mentioned in the commit introducing `Expected`, `QOlmExpected` is simply an alias for `Expected<T, QOlmError>`. This simplifies quite a few function signatures in `QOlm*` classes and collapses unwieldy `std::holds_alternative<>`/`std::get<>` constructs into a neat contextual bool cast and an invocation of `operator*` or `value()`/`error()` accessors that don't need to specify the type. While refactoring the code, I found a couple of cases of mismatching `uint32_t` and `qint32_t` in return values; a couple of cases where `decrypt()` returns `QString` which is in fact `QByteArray` (e.g., in `QOlmSession::decrypt()`); there's a repetitive algorithm in `Connection::Private::sessionDecryptPrekey()` and `sessionDecryptGeneral()`
2022-05-16room.cpp: use return {} where appropriateAlexey Rusakov
2022-05-14Cleanup across the boardAlexey Rusakov
Mainly driven by clang-tidy and SonarCloud warnings (sadly, SonarCloud doesn't store historical reports so no link can be provided here).
2022-05-11CallAnswerEvent: drop lifetimeAlexey Rusakov
See https://github.com/matrix-org/matrix-spec/pull/1054. # Conflicts: # lib/events/callanswerevent.cpp # lib/events/callanswerevent.h
2022-05-11Fix race condition in consumeRoomData()Alexey Rusakov
QCoreApplication::processEvents() is well-known to be a _wrong_ solution to the unresponsive UI problem; despite that, connection.cpp has long had that call to let UI update itself while processing bulky room updates (mainly from the initial sync). This commit finally fixes this, after an (admittedly rare) race condition has been hit, as follows: 0. Pre-requisite: quotest runs all the tests and is about to leave the room; there's an ongoing sync request. 1. Quotest calls /leave 2. Sync returns, with the batch of _several_ rooms (that's important) 3. The above code handles the first room in the batch 4. processEvents() is called, just in time for the /leave response. 5. The /leave response handler in quotest ends up calling Connection::logout() (processEvents() still hasn't returned). 6. Connection::logout() calls abandon() on the ongoing SyncJob, pulling the rug from under onSyncSuccess()/consumeRoomData(). 7. processEvents() returns and the above code proceeds to the next room - only to find that the roomDataList (that is a ref to a structure owned by SyncJob), is now pointing to garbage. Morals of the story: 1. processEvents() effectively makes code multi-threaded: one flow is suspended and another one may run _on the same data_. After the first flow is resumed, it cannot make any assumptions regarding which data the second flow touched and/or changed. 2. The library had quite a few cases of using &&-refs, avoiding even move operations but also leaving ownership of the data with the original producer (SyncJob). If the lifetime of that producer ends too soon, those refs become dangling. The fix makes two important things, respectively: 2. Ownership of room data is now transfered to the processing side, the moment it is scheduled (see below), in the form of moving into a lambda capture. 1. Instead of processEvents(), processing of room data is scheduled via QMetaObject::invokeMethod(), uncoupling the moment when the data was received in SyncJob from the moment they are processed in Room::updateData() (and all the numerous signal-slots it calls). Also: Room::baseStateLoaded now causes Connection::loadedRoomState, not the other way round - this is more natural and doesn't need Connection to keep firstTimeRooms map around.
2022-05-08More cleanupAlexey Rusakov
2022-04-09Comment out debug statementTobias Fella
2022-04-09Prepare for MSC 3700Tobias Fella
2022-04-09Don't crash when decrypting existing messagesTobias Fella
2022-03-07Store the device's ed25519 in the databaseTobias Fella
2022-02-27Apply suggestionsTobias Fella
2022-02-26Check that decrypted events are for the current roomTobias Fella
2022-02-13Merge branch 'dev'Alexey Rusakov
The result is FTBFS as yet; next commits will fix that, along with a few other things.
2022-02-12Replace QPair with std::pairTobias Fella
2022-02-11Implement more suggestionsTobias Fella
2022-01-23Refactor Room::setState()Alexey Rusakov
There are two important aspects here: - Introducing Room::setState(evtType, stateKey, contentJson). These components are ultimately what is getting sent to the homeserver, so it makes sense to expose a respective `setState()` overload. Unlike setState(event) the new overload can be Q_INVOKABLE. - Room::setState() is no more const. Although it doesn't cause any changes in Room class (and only transient changes in Room::Private), it ultimately initiates a change in the room state, so calling it const has always been a bit of hypocrisy. If you relied on that, you most likely do something wrong (see the fix to User::rename() in this very commit for a simple example of such wrongness). Also: the backend is simplified by calling the original templated Room::setState() instead of calling Room::Private::requestSetState() that does exactly the same thing.
2022-01-23RoomStateViewAlexey Rusakov
This class is called to provide an arbitrary snapshot of a room state; as the first step, Room::currentState() returns an instance of this class that stores, well, the current state. Implelementation-wise it's the same hash map of two-part state event keys to const event pointers; however, RoomStateView provides additional operations: - get(), that deprecates Room::getCurrentState(), returns a pointer to a particular event if the current state has it. Unlike the original method, the pointer returned from this one can be nullptr; this is done to get rid of stubbed state events that have to be created everytime a "state miss" occurred (i.e., when getCurrentState() does not find an existing event in the current state). - eventsOfType() - this is a new place for Room::stateEventsOfType() introduced recently. - query() - this is a way to specify a piece of the state content that you need to retrieve by passing a member function or a function object that retrieves it. That is especially convenient with member functions of the event class; just pass the pointer to this member function, and query() will parse the event type it has to retrieve out of it and call that member function on the event object. Returns an Omittable<>; if the respective piece of state doesn't exist, you'll get `Quotient::none` (the same as `std::nullopt`). - queryOr() - the same but with the fallback value; instead of an Omittable<>, the fallback value will be returned if the needed event is not found.
2022-01-21Redo EventRelation; deprecate RelatesToAlexey Rusakov
RelatesTo and EventRelation have been two means to the same end in two different contexts. (Modernised) EventRelation is the one used now both for ReactionEvent and EventContent::TextContent. The modernisation mostly boils down to using inline variables instead of functions to return relation types and switching to QLatin1String from const char* (because we know exactly that those constants are Latin-1 and QLatin1String is more efficient than const char* to compare/convert to QString).
2022-01-06Cleanup Room::pinnedEvents()Alexey Rusakov
Use 'auto'; range-for instead of an iterator loop.
2022-01-01OtherChange is Change::Other now Alexey Rusakov
`Room::Change` has been changed to be an enum class recently; and it's values are no more suffixed with `Change`.
2021-12-27Merge branch 'dev' into pinnedarawaaa
2021-12-10Remove data from database when leaving roomTobias Fella
2021-12-10Apply suggestions from code reviewTobias Fella
Co-authored-by: Alexey Rusakov <Kitsune-Ral@users.sf.net>
2021-12-10Use individual databases for each connectionTobias Fella
2021-12-09Ifdef all the thingsTobias Fella
2021-12-08Store encryptedevent in decrypted roomeventsTobias Fella
2021-12-07Maintain list of undecrypted events to speed up decryption of oldTobias Fella
messages
2021-12-07FixesTobias Fella
2021-12-07Rename "crypto" -> "e2ee"Tobias Fella
2021-12-07Port E2EE to database instead of JSON filesTobias Fella