using Gee; using Gtk; using Dino.Entities; using Xmpp; namespace Dino.Plugins.HttpFiles { public class FileProvider : Dino.FileProvider, Object { private StreamInteractor stream_interactor; private Dino.Database dino_db; private static Regex http_url_regex = /^https?:\/\/([^\s#]*)$/; // Spaces are invalid in URLs and we can't use fragments for downloads private static Regex omemo_url_regex = /^aesgcm:\/\/(.*)#(([A-Fa-f0-9]{2}){48}|([A-Fa-f0-9]{2}){44})$/; public FileProvider(StreamInteractor stream_interactor, Dino.Database dino_db) { this.stream_interactor = stream_interactor; this.dino_db = dino_db; stream_interactor.get_module(MessageProcessor.IDENTITY).received_pipeline.connect(new ReceivedMessageListener(this)); } private class ReceivedMessageListener : MessageListener { public string[] after_actions_const = new string[]{ "STORE" }; public override string action_group { get { return "MESSAGE_REINTERPRETING"; } } public override string[] after_actions { get { return after_actions_const; } } private FileProvider outer; private StreamInteractor stream_interactor; public ReceivedMessageListener(FileProvider outer) { this.outer = outer; this.stream_interactor = outer.stream_interactor; } public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) { string? oob_url = Xmpp.Xep.OutOfBandData.get_url_from_message(stanza); bool normal_file = oob_url != null && oob_url == message.body && FileProvider.http_url_regex.match(message.body); bool omemo_file = FileProvider.omemo_url_regex.match(message.body); if (normal_file || omemo_file) { outer.on_file_message(message, conversation); return true; } return false; } } private void on_file_message(Entities.Message message, Conversation conversation) { var additional_info = message.id.to_string(); var receive_data = new HttpFileReceiveData(); receive_data.url = message.body; var file_meta = new HttpFileMeta(); file_meta.file_name = extract_file_name_from_url(message.body); file_meta.message = message; file_incoming(additional_info, message.from, message.time, message.local_time, conversation, receive_data, file_meta); } public async FileMeta get_meta_info(FileTransfer file_transfer, FileReceiveData receive_data, FileMeta file_meta) throws FileReceiveError { HttpFileReceiveData? http_receive_data = receive_data as HttpFileReceiveData; if (http_receive_data == null) return file_meta; var session = new Soup.Session(); var head_message = new Soup.Message("HEAD", http_receive_data.url); if (head_message != null) { try { yield session.send_async(head_message, null); } catch (Error e) { throw new FileReceiveError.GET_METADATA_FAILED("HEAD request failed"); } string? content_type = null, content_length = null; head_message.response_headers.foreach((name, val) => { if (name == "Content-Type") content_type = val; if (name == "Content-Length") content_length = val; }); file_meta.mime_type = content_type; if (content_length != null) { file_meta.size = int.parse(content_length); } } return file_meta; } public Encryption get_encryption(FileTransfer file_transfer, FileReceiveData receive_data, FileMeta file_meta) { return Encryption.NONE; } public async InputStream download(FileTransfer file_transfer, FileReceiveData receive_data, FileMeta file_meta) throws FileReceiveError { HttpFileReceiveData? http_receive_data = receive_data as HttpFileReceiveData; if (http_receive_data == null) assert(false); try { var session = new Soup.Session(); Soup.Request request = session.request(http_receive_data.url); return yield request.send_async(null); } catch (Error e) { throw new FileReceiveError.DOWNLOAD_FAILED("Downloading file error: %s".printf(e.message)); } } public FileMeta get_file_meta(FileTransfer file_transfer) throws FileReceiveError { Conversation? conversation = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation(file_transfer.counterpart.bare_jid, file_transfer.account); if (conversation == null) throw new FileReceiveError.GET_METADATA_FAILED("No conversation"); Message? message = stream_interactor.get_module(MessageStorage.IDENTITY).get_message_by_id(int.parse(file_transfer.info), conversation); if (message == null) throw new FileReceiveError.GET_METADATA_FAILED("No message"); var file_meta = new HttpFileMeta(); file_meta.size = file_transfer.size; file_meta.mime_type = file_transfer.mime_type; file_meta.file_name = extract_file_name_from_url(message.body); file_meta.message = message; return file_meta; } public FileReceiveData? get_file_receive_data(FileTransfer file_transfer) { Conversation? conversation = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation(file_transfer.counterpart.bare_jid, file_transfer.account); if (conversation == null) return null; Message? message = stream_interactor.get_module(MessageStorage.IDENTITY).get_message_by_id(int.parse(file_transfer.info), conversation); if (message == null) return null; var receive_data = new HttpFileReceiveData(); receive_data.url = message.body; return receive_data; } private string extract_file_name_from_url(string url) { string ret = url; if (ret.contains("#")) { ret = ret.substring(0, ret.last_index_of("#")); } ret = Uri.unescape_string(ret.substring(ret.last_index_of("/") + 1)); return ret; } public int get_id() { return 0; } } }