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There was a fairly nasty change where `from` parameter in /messages
became optional and that led to two QString parameters (`from` and `dir)
switching positions. Because they have the same type, the problem only
shows at runtime. This commit fixes Room::getPreviousContent() to pass
the parameters at right positions; client code won't feel anything
(unless it uses GetRoomEventsJob directly).
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This is mainly to plug the definition of a string-to-variant map
for one-time keys (see
https://spec.matrix.org/v1.2/client-server-api/#key-algorithms) into
the CS API generated code (see the "shortcut OneTimeKeys" commit for
gtad.yaml); but along with it came considerable streamlining of code
in qolmaccount.cpp. Using std::variant to store that map also warranted
converters.h to gain support for that type (even wider than toJson()
that is already in dev - a non-trivial merge from dev is in order).
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This requires OneTimeKeys in keys.yaml to be marked as such (done in
quotient-im/matrix-spec but it's not there in matrix-org/matrix-spec).
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Also: use quotient-im/matrix-spec main branch again, now that it has
adjusted definitions; drop un(der)used partials
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Truncate ciphertext buffer to actual size during file encryption
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Co-authored-by: Alexey Rusakov <Kitsune-Ral@users.sf.net>
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Add function to check if e2ee is supported
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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.
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Implement sending encrypted messages
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Co-authored-by: Alexey Rusakov <Kitsune-Ral@users.sf.net>
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Co-authored-by: Alexey Rusakov <Kitsune-Ral@users.sf.net>
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Co-authored-by: Alexey Rusakov <Kitsune-Ral@users.sf.net>
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[skip ci]
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Co-authored-by: Tobias Fella <9750016+TobiasFella@users.noreply.github.com>
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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()`
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There's no particular use in letting `QOlmError` out, only to confirm
that, well, `QOlmError` is just another form of no-match.
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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.
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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.
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Various fixes and cleanup
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Mainly driven by clang-tidy and SonarCloud warnings (sadly, SonarCloud
doesn't store historical reports so no link can be provided here).
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See https://github.com/matrix-org/matrix-spec/pull/1054.
# Conflicts:
# lib/events/callanswerevent.cpp
# lib/events/callanswerevent.h
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