signalapp/libsignal-protocol-javascript
signalapp/libsignal-protocol-javascript
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Clear old sessions for a device when its identity changes

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This commit is contained in:
lilia 2017-05-24 16:14:13 -07:00
parent ee00f080f4
commit b45ace4d58
3 changed files with 42 additions and 4 deletions
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23
dist/libsignal-protocol.js vendored
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@ -35762,6 +35762,17 @@ Internal.SessionRecord = function() {
delete sessions[util.toString(oldestBaseKey)];
}
},
removePreviousSessions: function() {
var sessions = this.sessions;
for (var key in sessions) {
if (sessions[key].indexInfo.closed === -1) {
var newSessions = {};
newSessions[key] = sessions[key];
this.sessions = newSessions;
return;
}
}
},
};
return SessionRecord;
@ -35857,7 +35868,11 @@ SessionBuilder.prototype = {
record.updateSessionState(session);
return Promise.all([
this.storage.storeSession(address, record.serialize()),
this.storage.saveIdentity(this.remoteAddress.getName(), session.indexInfo.remoteIdentityKey)
this.storage.saveIdentity(this.remoteAddress.getName(), session.indexInfo.remoteIdentityKey).then(function(changed) {
if (changed) {
return record.removePreviousSessions();
}
}.bind(this))
]);
}.bind(this));
}.bind(this));
@ -35914,7 +35929,11 @@ SessionBuilder.prototype = {
// end of decryptWhisperMessage ... to ensure that the sender
// actually holds the private keys for all reported pubkeys
record.updateSessionState(new_session);
return this.storage.saveIdentity(this.remoteAddress.getName(), message.identityKey.toArrayBuffer()).then(function() {
return this.storage.saveIdentity(this.remoteAddress.getName(), message.identityKey.toArrayBuffer()).then(function(changed) {
if (changed) {
return record.removePreviousSessions();
}
}).then(function() {
return message.preKeyId;
});
}.bind(this));

12
src/SessionBuilder.js
View File

@ -51,7 +51,11 @@ SessionBuilder.prototype = {
record.updateSessionState(session);
return Promise.all([
this.storage.storeSession(address, record.serialize()),
this.storage.saveIdentity(this.remoteAddress.getName(), session.indexInfo.remoteIdentityKey)
this.storage.saveIdentity(this.remoteAddress.getName(), session.indexInfo.remoteIdentityKey).then(function(changed) {
if (changed) {
return record.removePreviousSessions();
}
}.bind(this))
]);
}.bind(this));
}.bind(this));
@ -108,7 +112,11 @@ SessionBuilder.prototype = {
// end of decryptWhisperMessage ... to ensure that the sender
// actually holds the private keys for all reported pubkeys
record.updateSessionState(new_session);
return this.storage.saveIdentity(this.remoteAddress.getName(), message.identityKey.toArrayBuffer()).then(function() {
return this.storage.saveIdentity(this.remoteAddress.getName(), message.identityKey.toArrayBuffer()).then(function(changed) {
if (changed) {
return record.removePreviousSessions();
}
}).then(function() {
return message.preKeyId;
});
}.bind(this));

11
src/SessionRecord.js
View File

@ -263,6 +263,17 @@ Internal.SessionRecord = function() {
delete sessions[util.toString(oldestBaseKey)];
}
},
removePreviousSessions: function() {
var sessions = this.sessions;
for (var key in sessions) {
if (sessions[key].indexInfo.closed === -1) {
var newSessions = {};
newSessions[key] = sessions[key];
this.sessions = newSessions;
return;
}
}
},
};
return SessionRecord;