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omemo: handle broken incoming key bundles

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fixes #137
This commit is contained in:
Marvin W 2017-08-24 15:55:24 +02:00
parent 51b4f9b204
commit 7b395263c1
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GPG key ID: 072E9235DB996F2A
1 changed files with 18 additions and 15 deletions
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33
plugins/omemo/src/stream_module.vala
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@ -282,25 +282,28 @@ public class StreamModule : XmppStreamModule {
ECPublicKey? identity_key = bundle.identity_key;
ArrayList<Bundle.PreKey> pre_keys = bundle.pre_keys;
int pre_key_idx = Random.int_range(0, pre_keys.size);
int32 pre_key_id = pre_keys[pre_key_idx].key_id;
ECPublicKey? pre_key = pre_keys[pre_key_idx].key;
if (signed_pre_key_id < 0 || signed_pre_key == null || identity_key == null || pre_key_id < 0 || pre_key == null) {
if (signed_pre_key_id < 0 || signed_pre_key == null || identity_key == null || pre_keys.size == 0) {
fail = true;
} else {
Address address = new Address(jid, device_id);
try {
if (store.contains_session(address)) {
return;
}
SessionBuilder builder = store.create_session_builder(address);
builder.process_pre_key_bundle(create_pre_key_bundle(device_id, device_id, pre_key_id, pre_key, signed_pre_key_id, signed_pre_key, signed_pre_key_signature, identity_key));
stream.get_module(IDENTITY).session_started(jid, device_id);
} catch (Error e) {
int pre_key_idx = Random.int_range(0, pre_keys.size);
int32 pre_key_id = pre_keys[pre_key_idx].key_id;
ECPublicKey? pre_key = pre_keys[pre_key_idx].key;
if (pre_key_id < 0 || pre_key == null) {
fail = true;
} else {
Address address = new Address(jid, device_id);
try {
if (store.contains_session(address)) {
return;
}
SessionBuilder builder = store.create_session_builder(address);
builder.process_pre_key_bundle(create_pre_key_bundle(device_id, device_id, pre_key_id, pre_key, signed_pre_key_id, signed_pre_key, signed_pre_key_signature, identity_key));
stream.get_module(IDENTITY).session_started(jid, device_id);
} catch (Error e) {
fail = true;
}
address.device_id = 0; // TODO: Hack to have address obj live longer
}
address.device_id = 0; // TODO: Hack to have address obj live longer
}
}
if (fail) {