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Try to avoid more olm loops

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This commit is contained in:
Nicolas Werner 2021-07-23 19:08:44 +02:00
parent dba2fb525a
commit bef2cbbd7f
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1 changed files with 22 additions and 13 deletions
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17
src/Olm.cpp
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@ -214,12 +214,14 @@ handle_olm_message(const OlmMessage &msg, const UserKeyCache &otherUserDeviceKey
const auto my_key = olm::client()->identity_keys().curve25519;
bool failed_decryption = false;
for (const auto &cipher : msg.ciphertext) {
// We skip messages not meant for the current device.
if (cipher.first != my_key) {
nhlog::crypto()->debug(
"Skipping message for {} since we are {}.", cipher.first, my_key);
return;
continue;
}
const auto type = cipher.second.type;
@ -234,6 +236,7 @@ handle_olm_message(const OlmMessage &msg, const UserKeyCache &otherUserDeviceKey
msg.sender, msg.sender_key, cipher.second);
} else {
nhlog::crypto()->error("Undecryptable olm message!");
failed_decryption = true;
continue;
}
}
@ -423,9 +426,12 @@ handle_olm_message(const OlmMessage &msg, const UserKeyCache &otherUserDeviceKey
}
return;
} else {
failed_decryption = true;
}
}
if (failed_decryption) {
try {
std::map<std::string, std::vector<std::string>> targets;
for (auto [device_id, key] : otherUserDeviceKeys.device_keys) {
@ -435,10 +441,13 @@ handle_olm_message(const OlmMessage &msg, const UserKeyCache &otherUserDeviceKey
send_encrypted_to_device_messages(
targets, mtx::events::DeviceEvent<mtx::events::msg::Dummy>{}, true);
nhlog::crypto()->info(
"Recovering from broken olm channel with {}:{}", msg.sender, msg.sender_key);
nhlog::crypto()->info("Recovering from broken olm channel with {}:{}",
msg.sender,
msg.sender_key);
} catch (std::exception &e) {
nhlog::crypto()->error("Failed to recover from broken olm sessions: {}", e.what());
nhlog::crypto()->error("Failed to recover from broken olm sessions: {}",
e.what());
}
}
}