diff options
Diffstat (limited to 'javascript/olm_post.js')
| -rw-r--r-- | javascript/olm_post.js | 587 |
1 files changed, 0 insertions, 587 deletions
diff --git a/javascript/olm_post.js b/javascript/olm_post.js deleted file mode 100644 index 450861a..0000000 --- a/javascript/olm_post.js +++ /dev/null @@ -1,587 +0,0 @@ -var malloc = Module['_malloc']; -var free = Module['_free']; -var OLM_ERROR; - -function filled_stack(size, filler) { - var ptr = stackAlloc(size); - filler(new Uint8Array(Module['HEAPU8'].buffer, ptr, size)); - return ptr; -} - -/* allocate a number of bytes of storage on the stack. - * - * If size_or_array is a Number, allocates that number of zero-initialised bytes. - */ -function stack(size_or_array) { - return (typeof size_or_array == 'number') - ? filled_stack(size_or_array, function(x) { x.fill(0) }) - : filled_stack(size_or_array.length, function(x) { x.set(size_or_array) }); -} - -function array_from_string(string) { - return string instanceof Uint8Array ? string : intArrayFromString(string, true); -} - -function random_stack(size) { - return filled_stack(size, get_random_values); -} - -function restore_stack(wrapped) { - return function() { - var sp = stackSave(); - try { - return wrapped.apply(this, arguments); - } finally { - stackRestore(sp); - } - } -} - -/* set a memory area to zero */ -function bzero(ptr, n) { - while(n-- > 0) { - Module['HEAP8'][ptr++] = 0; - } -} - -function Account() { - var size = Module['_olm_account_size'](); - this.buf = malloc(size); - this.ptr = Module['_olm_account'](this.buf); -} - -function account_method(wrapped) { - return function() { - var result = wrapped.apply(this, arguments); - if (result === OLM_ERROR) { - var message = UTF8ToString( - Module['_olm_account_last_error'](arguments[0]) - ); - throw new Error("OLM." + message); - } - return result; - } -} - -Account.prototype['free'] = function() { - Module['_olm_clear_account'](this.ptr); - free(this.ptr); -} - -Account.prototype['create'] = restore_stack(function() { - var random_length = account_method( - Module['_olm_create_account_random_length'] - )(this.ptr); - var random = random_stack(random_length); - account_method(Module['_olm_create_account'])( - this.ptr, random, random_length - ); -}); - -Account.prototype['identity_keys'] = restore_stack(function() { - var keys_length = account_method( - Module['_olm_account_identity_keys_length'] - )(this.ptr); - var keys = stack(keys_length + NULL_BYTE_PADDING_LENGTH); - account_method(Module['_olm_account_identity_keys'])( - this.ptr, keys, keys_length - ); - return UTF8ToString(keys, keys_length); -}); - -Account.prototype['sign'] = restore_stack(function(message) { - var signature_length = account_method( - Module['_olm_account_signature_length'] - )(this.ptr); - var message_array = array_from_string(message); - var message_buffer = stack(message_array); - var signature_buffer = stack(signature_length + NULL_BYTE_PADDING_LENGTH); - try { - account_method(Module['_olm_account_sign'])( - this.ptr, - message_buffer, message_array.length, - signature_buffer, signature_length - ); - } finally { - // clear out copies of the message, which may be plaintext - bzero(message_buffer, message_array.length); - for (var i = 0; i < message_array.length; i++) { - message_array[i] = 0; - } - } - return UTF8ToString(signature_buffer, signature_length); -}); - -Account.prototype['one_time_keys'] = restore_stack(function() { - var keys_length = account_method( - Module['_olm_account_one_time_keys_length'] - )(this.ptr); - var keys = stack(keys_length + NULL_BYTE_PADDING_LENGTH); - account_method(Module['_olm_account_one_time_keys'])( - this.ptr, keys, keys_length - ); - return UTF8ToString(keys, keys_length); -}); - -Account.prototype['mark_keys_as_published'] = restore_stack(function() { - account_method(Module['_olm_account_mark_keys_as_published'])(this.ptr); -}); - -Account.prototype['max_number_of_one_time_keys'] = restore_stack(function() { - return account_method(Module['_olm_account_max_number_of_one_time_keys'])( - this.ptr - ); -}); - -Account.prototype['generate_one_time_keys'] = restore_stack(function( - number_of_keys -) { - var random_length = account_method( - Module['_olm_account_generate_one_time_keys_random_length'] - )(this.ptr, number_of_keys); - var random = random_stack(random_length); - account_method(Module['_olm_account_generate_one_time_keys'])( - this.ptr, number_of_keys, random, random_length - ); -}); - -Account.prototype['remove_one_time_keys'] = restore_stack(function(session) { - account_method(Module['_olm_remove_one_time_keys'])( - this.ptr, session.ptr - ); -}); - -Account.prototype['generate_fallback_key'] = restore_stack(function() { - var random_length = account_method( - Module['_olm_account_generate_fallback_key_random_length'] - )(this.ptr); - var random = random_stack(random_length); - account_method(Module['_olm_account_generate_fallback_key'])( - this.ptr, random, random_length - ); -}); - -Account.prototype['fallback_key'] = restore_stack(function() { - var keys_length = account_method( - Module['_olm_account_fallback_key_length'] - )(this.ptr); - var keys = stack(keys_length + NULL_BYTE_PADDING_LENGTH); - account_method(Module['_olm_account_fallback_key'])( - this.ptr, keys, keys_length - ); - return UTF8ToString(keys, keys_length); -}); - -Account.prototype['pickle'] = restore_stack(function(key) { - var key_array = array_from_string(key); - var pickle_length = account_method( - Module['_olm_pickle_account_length'] - )(this.ptr); - var key_buffer = stack(key_array); - var pickle_buffer = stack(pickle_length + NULL_BYTE_PADDING_LENGTH); - try { - account_method(Module['_olm_pickle_account'])( - this.ptr, key_buffer, key_array.length, pickle_buffer, pickle_length - ); - } finally { - // clear out copies of the pickle key - bzero(key_buffer, key_array.length) - for (var i = 0; i < key_array.length; i++) { - key_array[i] = 0; - } - } - return UTF8ToString(pickle_buffer, pickle_length); -}); - -Account.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); - try { - account_method(Module['_olm_unpickle_account'])( - this.ptr, key_buffer, key_array.length, pickle_buffer, - pickle_array.length - ); - } finally { - // clear out copies of the pickle key - bzero(key_buffer, key_array.length) - for (var i = 0; i < key_array.length; i++) { - key_array[i] = 0; - } - } -}); - -function Session() { - var size = Module['_olm_session_size'](); - this.buf = malloc(size); - this.ptr = Module['_olm_session'](this.buf); -} - -function session_method(wrapped) { - return function() { - var result = wrapped.apply(this, arguments); - if (result === OLM_ERROR) { - var message = UTF8ToString( - Module['_olm_session_last_error'](arguments[0]) - ); - throw new Error("OLM." + message); - } - return result; - } -} - -Session.prototype['free'] = function() { - Module['_olm_clear_session'](this.ptr); - free(this.ptr); -} - -Session.prototype['pickle'] = restore_stack(function(key) { - var key_array = array_from_string(key); - var pickle_length = session_method( - Module['_olm_pickle_session_length'] - )(this.ptr); - var key_buffer = stack(key_array); - var pickle_buffer = stack(pickle_length + NULL_BYTE_PADDING_LENGTH); - try { - session_method(Module['_olm_pickle_session'])( - this.ptr, key_buffer, key_array.length, pickle_buffer, pickle_length - ); - } finally { - // clear out copies of the pickle key - bzero(key_buffer, key_array.length) - for (var i = 0; i < key_array.length; i++) { - key_array[i] = 0; - } - } - return UTF8ToString(pickle_buffer, pickle_length); -}); - -Session.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); - try { - session_method(Module['_olm_unpickle_session'])( - this.ptr, key_buffer, key_array.length, pickle_buffer, - pickle_array.length - ); - } finally { - // clear out copies of the pickle key - bzero(key_buffer, key_array.length) - for (var i = 0; i < key_array.length; i++) { - key_array[i] = 0; - } - } -}); - -Session.prototype['create_outbound'] = restore_stack(function( - account, their_identity_key, their_one_time_key -) { - var random_length = session_method( - Module['_olm_create_outbound_session_random_length'] - )(this.ptr); - var random = random_stack(random_length); - var identity_key_array = array_from_string(their_identity_key); - var one_time_key_array = array_from_string(their_one_time_key); - var identity_key_buffer = stack(identity_key_array); - var one_time_key_buffer = stack(one_time_key_array); - try { - session_method(Module['_olm_create_outbound_session'])( - this.ptr, account.ptr, - identity_key_buffer, identity_key_array.length, - one_time_key_buffer, one_time_key_array.length, - random, random_length - ); - } finally { - // clear the random buffer, which is key data - bzero(random, random_length); - } -}); - -Session.prototype['create_inbound'] = restore_stack(function( - account, one_time_key_message -) { - var message_array = array_from_string(one_time_key_message); - var message_buffer = stack(message_array); - try { - session_method(Module['_olm_create_inbound_session'])( - this.ptr, account.ptr, message_buffer, message_array.length - ); - } finally { - // clear out copies of the key - bzero(message_buffer, message_array.length); - for (var i = 0; i < message_array.length; i++) { - message_array[i] = 0; - } - } -}); - -Session.prototype['create_inbound_from'] = restore_stack(function( - account, identity_key, one_time_key_message -) { - var identity_key_array = array_from_string(identity_key); - var identity_key_buffer = stack(identity_key_array); - var message_array = array_from_string(one_time_key_message); - var message_buffer = stack(message_array); - try { - session_method(Module['_olm_create_inbound_session_from'])( - this.ptr, account.ptr, - identity_key_buffer, identity_key_array.length, - message_buffer, message_array.length - ); - } finally { - // clear out copies of the key - bzero(message_buffer, message_array.length); - for (var i = 0; i < message_array.length; i++) { - message_array[i] = 0; - } - } -}); - -Session.prototype['session_id'] = restore_stack(function() { - var id_length = session_method(Module['_olm_session_id_length'])(this.ptr); - var id_buffer = stack(id_length + NULL_BYTE_PADDING_LENGTH); - session_method(Module['_olm_session_id'])( - this.ptr, id_buffer, id_length - ); - return UTF8ToString(id_buffer, id_length); -}); - -Session.prototype['has_received_message'] = function() { - return session_method(Module['_olm_session_has_received_message'])( - this.ptr - ) ? true : false; -}; - - -Session.prototype['matches_inbound'] = restore_stack(function( - one_time_key_message -) { - var message_array = array_from_string(one_time_key_message); - var message_buffer = stack(message_array); - return session_method(Module['_olm_matches_inbound_session'])( - this.ptr, message_buffer, message_array.length - ) ? true : false; -}); - -Session.prototype['matches_inbound_from'] = restore_stack(function( - identity_key, one_time_key_message -) { - var identity_key_array = array_from_string(identity_key); - var identity_key_buffer = stack(identity_key_array); - var message_array = array_from_string(one_time_key_message); - var message_buffer = stack(message_array); - return session_method(Module['_olm_matches_inbound_session_from'])( - this.ptr, - identity_key_buffer, identity_key_array.length, - message_buffer, message_array.length - ) ? true : false; -}); - -Session.prototype['encrypt'] = restore_stack(function( - plaintext -) { - var plaintext_buffer, message_buffer, plaintext_length, random, random_length; - try { - random_length = session_method( - Module['_olm_encrypt_random_length'] - )(this.ptr); - var message_type = session_method( - Module['_olm_encrypt_message_type'] - )(this.ptr); - - plaintext_length = lengthBytesUTF8(plaintext); - var message_length = session_method( - Module['_olm_encrypt_message_length'] - )(this.ptr, plaintext_length); - - random = random_stack(random_length); - - // need to allow space for the terminator (which stringToUTF8 always - // writes), hence + 1. - plaintext_buffer = malloc(plaintext_length + 1); - stringToUTF8(plaintext, plaintext_buffer, plaintext_length + 1); - - message_buffer = malloc(message_length + NULL_BYTE_PADDING_LENGTH); - - session_method(Module['_olm_encrypt'])( - this.ptr, - plaintext_buffer, plaintext_length, - random, random_length, - message_buffer, message_length - ); - - // UTF8ToString requires a null-terminated argument, so add the - // null terminator. - setValue( - message_buffer+message_length, - 0, "i8" - ); - - return { - "type": message_type, - "body": UTF8ToString(message_buffer, message_length), - }; - } finally { - if (random !== undefined) { - // clear out the random buffer, since it is the private key - bzero(random, random_length); - } - if (plaintext_buffer !== undefined) { - // don't leave a copy of the plaintext in the heap. - bzero(plaintext_buffer, plaintext_length + 1); - free(plaintext_buffer); - } - if (message_buffer !== undefined) { - free(message_buffer); - } - } -}); - -Session.prototype['decrypt'] = restore_stack(function( - message_type, message -) { - var message_buffer, plaintext_buffer, max_plaintext_length; - - try { - message_buffer = malloc(message.length); - writeAsciiToMemory(message, message_buffer, true); - - max_plaintext_length = session_method( - Module['_olm_decrypt_max_plaintext_length'] - )(this.ptr, message_type, message_buffer, message.length); - - // caculating the length destroys the input buffer, so we need to re-copy it. - writeAsciiToMemory(message, message_buffer, true); - - plaintext_buffer = malloc(max_plaintext_length + NULL_BYTE_PADDING_LENGTH); - - var plaintext_length = session_method(Module["_olm_decrypt"])( - this.ptr, message_type, - message_buffer, message.length, - plaintext_buffer, max_plaintext_length - ); - - // UTF8ToString requires a null-terminated argument, so add the - // null terminator. - setValue( - plaintext_buffer+plaintext_length, - 0, "i8" - ); - - return UTF8ToString(plaintext_buffer, plaintext_length); - } finally { - if (message_buffer !== undefined) { - free(message_buffer); - } - if (plaintext_buffer !== undefined) { - // don't leave a copy of the plaintext in the heap. - bzero(plaintext_buffer, max_plaintext_length); - free(plaintext_buffer); - } - } - -}); - -Session.prototype['describe'] = restore_stack(function() { - var description_buf; - try { - description_buf = malloc(256); - session_method(Module['_olm_session_describe'])( - this.ptr, description_buf, 256 - ); - return UTF8ToString(description_buf); - } finally { - if (description_buf !== undefined) free(description_buf); - } -}); - -function Utility() { - var size = Module['_olm_utility_size'](); - this.buf = malloc(size); - this.ptr = Module['_olm_utility'](this.buf); -} - -function utility_method(wrapped) { - return function() { - var result = wrapped.apply(this, arguments); - if (result === OLM_ERROR) { - var message = UTF8ToString( - Module['_olm_utility_last_error'](arguments[0]) - ); - throw new Error("OLM." + message); - } - return result; - } -} - -Utility.prototype['free'] = function() { - Module['_olm_clear_utility'](this.ptr); - free(this.ptr); -} - -Utility.prototype['sha256'] = restore_stack(function(input) { - var output_length = utility_method(Module['_olm_sha256_length'])(this.ptr); - var input_array = array_from_string(input); - var input_buffer = stack(input_array); - var output_buffer = stack(output_length + NULL_BYTE_PADDING_LENGTH); - try { - utility_method(Module['_olm_sha256'])( - this.ptr, - input_buffer, input_array.length, - output_buffer, output_length - ); - } finally { - // clear out copies of the input buffer, which may be plaintext - bzero(input_buffer, input_array.length); - for (var i = 0; i < input_array.length; i++) { - input_array[i] = 0; - } - } - return UTF8ToString(output_buffer, output_length); -}); - -Utility.prototype['ed25519_verify'] = restore_stack(function( - key, message, signature -) { - var key_array = array_from_string(key); - var key_buffer = stack(key_array); - var message_array = array_from_string(message); - var message_buffer = stack(message_array); - var signature_array = array_from_string(signature); - var signature_buffer = stack(signature_array); - try { - utility_method(Module['_olm_ed25519_verify'])( - this.ptr, - key_buffer, key_array.length, - message_buffer, message_array.length, - signature_buffer, signature_array.length - ); - } finally { - // clear out copies of the input buffer, which may be plaintext - bzero(message_buffer, message_array.length); - for (var i = 0; i < message_array.length; i++) { - message_array[i] = 0; - } - } -}); - -olm_exports["Account"] = Account; -olm_exports["Session"] = Session; -olm_exports["Utility"] = Utility; -olm_exports["PkEncryption"] = PkEncryption; -olm_exports["PkDecryption"] = PkDecryption; -olm_exports["PkSigning"] = PkSigning; -olm_exports["SAS"] = SAS; - -olm_exports["get_library_version"] = restore_stack(function() { - var buf = stack(3); - Module['_olm_get_library_version'](buf, buf+1, buf+2); - return [ - getValue(buf, 'i8'), - getValue(buf+1, 'i8'), - getValue(buf+2, 'i8'), - ]; -}); |