/* The 'length' argument to Pointer_stringify doesn't work if the input includes * characters >= 128; we therefore need to add a NULL character to all of our * strings. This acts as a symbolic constant to help show what we're doing. */ var NULL_BYTE_PADDING_LENGTH = 1; function OutboundGroupSession() { var size = Module['_olm_outbound_group_session_size'](); this.buf = malloc(size); this.ptr = Module['_olm_outbound_group_session'](this.buf); } function outbound_group_session_method(wrapped) { return function() { var result = wrapped.apply(this, arguments); if (result === OLM_ERROR) { var message = Pointer_stringify( Module['_olm_outbound_group_session_last_error'](arguments[0]) ); throw new Error("OLM." + message); } return result; } } OutboundGroupSession.prototype['free'] = function() { Module['_olm_clear_outbound_group_session'](this.ptr); free(this.ptr); } OutboundGroupSession.prototype['pickle'] = restore_stack(function(key) { var key_array = array_from_string(key); var pickle_length = outbound_group_session_method( Module['_olm_pickle_outbound_group_session_length'] )(this.ptr); var key_buffer = stack(key_array); var pickle_buffer = stack(pickle_length + NULL_BYTE_PADDING_LENGTH); outbound_group_session_method(Module['_olm_pickle_outbound_group_session'])( this.ptr, key_buffer, key_array.length, pickle_buffer, pickle_length ); return Pointer_stringify(pickle_buffer); }); OutboundGroupSession.prototype['unpickle'] = restore_stack(function(key, pickle) { var key_array = array_from_string(key); var key_buffer = stack(key_array); var pickle_array = array_from_string(pickle); var pickle_buffer = stack(pickle_array); outbound_group_session_method(Module['_olm_unpickle_outbound_group_session'])( this.ptr, key_buffer, key_array.length, pickle_buffer, pickle_array.length ); }); OutboundGroupSession.prototype['create'] = restore_stack(function(key) { var random_length = outbound_group_session_method( Module['_olm_init_outbound_group_session_random_length'] )(this.ptr); var random = random_stack(random_length); outbound_group_session_method(Module['_olm_init_outbound_group_session'])( this.ptr, random, random_length ); }); OutboundGroupSession.prototype['encrypt'] = restore_stack(function(plaintext) { var plaintext_array = array_from_string(plaintext); var message_length = outbound_group_session_method( Module['_olm_group_encrypt_message_length'] )(this.ptr, plaintext_array.length); var plaintext_buffer = stack(plaintext_array); var message_buffer = stack(message_length + NULL_BYTE_PADDING_LENGTH); outbound_group_session_method(Module['_olm_group_encrypt'])( this.ptr, plaintext_buffer, plaintext_array.length, message_buffer, message_length ); return Pointer_stringify(message_buffer); }); OutboundGroupSession.prototype['session_id'] = restore_stack(function(key) { var length = outbound_group_session_method( Module['_olm_outbound_group_session_id_length'] )(this.ptr); var session_id = stack(length + NULL_BYTE_PADDING_LENGTH); outbound_group_session_method(Module['_olm_outbound_group_session_id'])( this.ptr, session_id, length ); return Pointer_stringify(session_id); }); OutboundGroupSession.prototype['session_key'] = restore_stack(function(key) { var key_length = outbound_group_session_method( Module['_olm_outbound_group_session_key_length'] )(this.ptr); var key = stack(key_length + NULL_BYTE_PADDING_LENGTH); outbound_group_session_method(Module['_olm_outbound_group_session_key'])( this.ptr, key, key_length ); return Pointer_stringify(key); }); OutboundGroupSession.prototype['message_index'] = function() { var idx = outbound_group_session_method( Module['_olm_outbound_group_session_message_index'] )(this.ptr); return idx; }; olm_exports['OutboundGroupSession'] = OutboundGroupSession;