78 lines
2.8 KiB
JavaScript
78 lines
2.8 KiB
JavaScript
function InboundGroupSession() {
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var size = Module['_olm_inbound_group_session_size']();
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this.buf = malloc(size);
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this.ptr = Module['_olm_inbound_group_session'](this.buf);
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}
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function inbound_group_session_method(wrapped) {
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return function() {
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var result = wrapped.apply(this, arguments);
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if (result === OLM_ERROR) {
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var message = Pointer_stringify(
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Module['_olm_inbound_group_session_last_error'](arguments[0])
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);
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throw new Error("OLM." + message);
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}
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return result;
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}
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}
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InboundGroupSession.prototype['free'] = function() {
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Module['_olm_clear_inbound_group_session'](this.ptr);
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free(this.ptr);
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}
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InboundGroupSession.prototype['pickle'] = restore_stack(function(key) {
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var key_array = array_from_string(key);
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var pickle_length = inbound_group_session_method(
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Module['_olm_pickle_inbound_group_session_length']
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)(this.ptr);
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var key_buffer = stack(key_array);
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var pickle_buffer = stack(pickle_length);
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inbound_group_session_method(Module['_olm_pickle_inbound_group_session'])(
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this.ptr, key_buffer, key_array.length, pickle_buffer, pickle_length
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);
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return Pointer_stringify(pickle_buffer, pickle_length);
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});
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InboundGroupSession.prototype['unpickle'] = restore_stack(function(key, pickle) {
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var key_array = array_from_string(key);
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var key_buffer = stack(key_array);
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var pickle_array = array_from_string(pickle);
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var pickle_buffer = stack(pickle_array);
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inbound_group_session_method(Module['_olm_unpickle_inbound_group_session'])(
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this.ptr, key_buffer, key_array.length, pickle_buffer,
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pickle_array.length
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);
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});
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InboundGroupSession.prototype['create'] = restore_stack(function(message_index, session_key) {
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var key_array = array_from_string(session_key);
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var key_buffer = stack(key_array);
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inbound_group_session_method(Module['_olm_init_inbound_group_session'])(
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this.ptr, message_index, key_buffer, key_array.length
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);
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});
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InboundGroupSession.prototype['decrypt'] = restore_stack(function(
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message
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) {
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var message_array = array_from_string(message);
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var message_buffer = stack(message_array);
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var max_plaintext_length = session_method(
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Module['_olm_group_decrypt_max_plaintext_length']
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)(this.ptr, message_buffer, message_array.length);
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// caculating the length destroys the input buffer.
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// So we copy the array to a new buffer
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var message_buffer = stack(message_array);
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var plaintext_buffer = stack(max_plaintext_length);
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var plaintext_length = session_method(Module["_olm_group_decrypt"])(
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this.ptr,
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message_buffer, message_array.length,
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plaintext_buffer, max_plaintext_length
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);
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return Pointer_stringify(plaintext_buffer, plaintext_length);
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});
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olm_exports['InboundGroupSession'] = InboundGroupSession;
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