using Dino.Entities; namespace Dino.Plugins.OpenPgp { public class PgpFileDecryptor : FileDecryptor, Object { public FileReceiveData prepare_get_meta_info(Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data) { return receive_data; } public FileMeta prepare_download_file(Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data, FileMeta file_meta) { return file_meta; } public bool can_decrypt_file(Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data) { return file_transfer.file_name.has_suffix("pgp") || file_transfer.mime_type == "application/pgp-encrypted"; } public async InputStream decrypt_file(InputStream encrypted_stream, Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data) throws FileReceiveError { try { uint8[] buf = new uint8[256]; Array data = new Array(false, true, 0); size_t len = -1; do { len = encrypted_stream.read(buf); data.append_vals(buf, (uint) len); } while(len > 0); GPGHelper.DecryptedData clear_data = GPGHelper.decrypt_data(data.data); file_transfer.encryption = Encryption.PGP; if (clear_data.filename != null && clear_data.filename != "") { file_transfer.file_name = clear_data.filename; } else if (file_transfer.file_name.has_suffix(".pgp")) { file_transfer.file_name = file_transfer.file_name.substring(0, file_transfer.file_name.length - 4); } return new MemoryInputStream.from_data(clear_data.data, GLib.free); } catch (Error e) { throw new FileReceiveError.DECRYPTION_FAILED("PGP file decryption error: %s".printf(e.message)); } } } }