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Request unknown message indices

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This commit is contained in:
Nicolas Werner 2021-01-23 20:08:59 +01:00
parent 049278bc35
commit 7bc57f76f7
5 changed files with 23 additions and 10 deletions
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2
CMakeLists.txt
View file

@ -355,7 +355,7 @@ if(USE_BUNDLED_MTXCLIENT)
FetchContent_Declare( FetchContent_Declare(
MatrixClient MatrixClient
GIT_REPOSITORY https://github.com/Nheko-Reborn/mtxclient.git GIT_REPOSITORY https://github.com/Nheko-Reborn/mtxclient.git
GIT_TAG v0.4.0 GIT_TAG 1e97d3195d366a15a086ca451d082d59972105ba
) )
set(BUILD_LIB_EXAMPLES OFF CACHE INTERNAL "") set(BUILD_LIB_EXAMPLES OFF CACHE INTERNAL "")
set(BUILD_LIB_TESTS OFF CACHE INTERNAL "") set(BUILD_LIB_TESTS OFF CACHE INTERNAL "")

3
io.github.NhekoReborn.Nheko.json
View file

@ -220,8 +220,7 @@
"name": "mtxclient", "name": "mtxclient",
"sources": [ "sources": [
{ {
"commit": "2d6e3f79917ce2065a54ca32e6a9f9d42c0b6347", "commit": "1e97d3195d366a15a086ca451d082d59972105ba",
"tag": "v0.4.0",
"type": "git", "type": "git",
"url": "https://github.com/Nheko-Reborn/mtxclient.git" "url": "https://github.com/Nheko-Reborn/mtxclient.git"
} }

3
src/Olm.cpp
View file

@ -890,12 +890,15 @@ decryptEvent(const MegolmSessionIndex &index,
std::string msg_str; std::string msg_str;
try { try {
auto session = cache::client()->getInboundMegolmSession(index); auto session = cache::client()->getInboundMegolmSession(index);
auto res = auto res =
olm::client()->decrypt_group_message(session.get(), event.content.ciphertext); olm::client()->decrypt_group_message(session.get(), event.content.ciphertext);
msg_str = std::string((char *)res.data.data(), res.data.size()); msg_str = std::string((char *)res.data.data(), res.data.size());
} catch (const lmdb::error &e) { } catch (const lmdb::error &e) {
return {DecryptionErrorCode::DbError, e.what(), std::nullopt}; return {DecryptionErrorCode::DbError, e.what(), std::nullopt};
} catch (const mtx::crypto::olm_exception &e) { } catch (const mtx::crypto::olm_exception &e) {
if (e.error_code() == mtx::crypto::OlmErrorCode::UNKNOWN_MESSAGE_INDEX)
return {DecryptionErrorCode::MissingSessionIndex, e.what(), std::nullopt};
return {DecryptionErrorCode::DecryptionFailed, e.what(), std::nullopt}; return {DecryptionErrorCode::DecryptionFailed, e.what(), std::nullopt};
} }

4
src/Olm.h
View file

@ -17,7 +17,9 @@ enum class DecryptionErrorCode
{ {
MissingSession, // Session was not found, retrieve from backup or request from other devices MissingSession, // Session was not found, retrieve from backup or request from other devices
// and try again // and try again
DbError, // DB read failed MissingSessionIndex, // Session was found, but it does not reach back enough to this index,
// retrieve from backup or request from other devices and try again
DbError, // DB read failed
DecryptionFailed, // libolm error DecryptionFailed, // libolm error
ParsingFailed, // Failed to parse the actual event ParsingFailed, // Failed to parse the actual event
ReplayAttack, // Megolm index reused ReplayAttack, // Megolm index reused

21
src/timeline/EventStore.cpp
View file

@ -543,12 +543,21 @@ EventStore::decryptEvent(const IdIndex &idx,
if (decryptionResult.error) { if (decryptionResult.error) {
switch (*decryptionResult.error) { switch (*decryptionResult.error) {
case olm::DecryptionErrorCode::MissingSession: { case olm::DecryptionErrorCode::MissingSession:
dummy.content.body = case olm::DecryptionErrorCode::MissingSessionIndex: {
tr("-- Encrypted Event (No keys found for decryption) --", if (decryptionResult.error == olm::DecryptionErrorCode::MissingSession)
"Placeholder, when the message was not decrypted yet or can't be " dummy.content.body =
"decrypted.") tr("-- Encrypted Event (No keys found for decryption) --",
.toStdString(); "Placeholder, when the message was not decrypted yet or can't "
"be "
"decrypted.")
.toStdString();
else
dummy.content.body =
tr("-- Encrypted Event (Key not valid for this index) --",
"Placeholder, when the message can't be decrypted with this "
"key since it is not valid for this index ")
.toStdString();
nhlog::crypto()->info("Could not find inbound megolm session ({}, {}, {})", nhlog::crypto()->info("Could not find inbound megolm session ({}, {}, {})",
index.room_id, index.room_id,
index.session_id, index.session_id,