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2022-05-30Merge pull request #555 from TobiasFella/accountskeychainAlexey Rusakov
Load and store accounts in the keychain
2022-05-29Also reemit resolveErrorTobias Fella
2022-05-29Error handlingTobias Fella
2022-05-29Apply suggestions from code reviewTobias Fella
Co-authored-by: Alexey Rusakov <Kitsune-Ral@users.sf.net>
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
2022-05-29DownloadFileJob: refactor file decryptionAlexey 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.
2022-05-27Load and store accounts in the keychainTobias Fella
2022-05-20Merge pull request #553 from TobiasFella/work/fixencryptionAlexey Rusakov
Truncate ciphertext buffer to actual size during file encryption
2022-05-20Apply suggestions from code reviewTobias Fella
Co-authored-by: Alexey Rusakov <Kitsune-Ral@users.sf.net>
2022-05-20Truncate ciphertext buffer to actual size during file encryptionTobias Fella
The ciphertext for AES CTR is exactly as large as the plaintext (not necessarily a multiple of the blocksize!). By truncating the ciphertext, we do not send bytes that will be decrypted to gibberish. As a side node, we probably do not need to initialize the ciphertext buffer larger than the plaintext size at all, but the OpenSSL docs are a bit vague about that.
2022-05-19Add function to check if e2ee is supportedTobias Fella
2022-05-19Fix cipher text buffer initializationTobias Fella
2022-05-19Fix FTBFS without E2EEAlexey Rusakov
2022-05-19Document devices tupleTobias Fella
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
2022-05-18Update lib/events/encryptedevent.cppTobias Fella
Co-authored-by: Alexey Rusakov <Kitsune-Ral@users.sf.net>
2022-05-18Apply suggestions from code reviewTobias Fella
Co-authored-by: Alexey Rusakov <Kitsune-Ral@users.sf.net>
2022-05-16Fix build failuresTobias Fella
2022-05-16FixesTobias Fella
2022-05-16Add database migrationTobias Fella
2022-05-16Update lib/events/encryptedfile.hTobias 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
2022-05-16Add constructor for creating roomkeyeventsTobias Fella
2022-05-16expected.h: add a copyright noticeAlexey Rusakov
[skip ci]
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()`
2022-05-16Simplify QOlmSession::matchesInboundSession*()Alexey Rusakov
There's no particular use in letting `QOlmError` out, only to confirm that, well, `QOlmError` is just another form of no-match.
2022-05-16QOlmAccount::needsSave() shouldn't be constAlexey Rusakov
Making Qt signals const is an impossible commitment - once the signal is out, you can't control if any called slot will change the emitting class or not. The code compiles but const-ness is not preserved.
2022-05-16Expected<>Alexey Rusakov
This is a minimal implementation along the lines of `std::expected<>` introduced in C++23; once compilers catch up with C++23 support, it may become simply a typedef of std::expected. There are no tests as yet; but the following commits will introduce QOlmExpected that would replace the current `std::variant<T, QOlmError>` pattern used throughout `QOlm*` classes, automatically pulling Expected under the coverage of `QOlm*` unit tests.
2022-05-16Optimise #includes for QOlm* classesAlexey Rusakov
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.
2022-05-08Merge #548: Streamline usage of event types, part 1Alexey Rusakov
2022-05-08QUO_CONTENT_GETTERAlexey Rusakov
To streamline adding of simple getters of content parts.
2022-05-08Use std::pair instead of QPairAlexey Rusakov
QPair is giving way to its STL counterpart, becoming its alias in Qt 6.