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/*
* Copyright (C) 2008-2010 Nokia Corporation.
* Copyright (C) 2006, 2007, 2008 OpenedHand Ltd.
* Copyright (C) 2013 Cable Television Laboratories, Inc.
*
* Author: Zeeshan Ali (Khattak) <zeeshanak@gnome.org>
* <zeeshan.ali@nokia.com>
* Jorn Baayen <jorn.baayen@gmail.com>
* Craig Pratt <craig@ecaspia.com>
*
* This file is part of Rygel.
*
* Rygel is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Rygel is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
public errordomain Rygel.HTTPRequestError {
UNACCEPTABLE = Soup.Status.NOT_ACCEPTABLE,
BAD_REQUEST = Soup.Status.BAD_REQUEST,
NOT_FOUND = Soup.Status.NOT_FOUND,
INTERNAL_SERVER_ERROR = Soup.Status.INTERNAL_SERVER_ERROR
}
/**
* Base class for HTTP client requests.
*/
public abstract class Rygel.HTTPRequest : GLib.Object, Rygel.StateMachine {
public unowned HTTPServer http_server;
private MediaContainer root_container;
public unowned Soup.Server server;
public Soup.ServerMessage msg;
public Cancellable cancellable { get; set; }
protected HTTPItemURI uri;
public MediaObject object;
internal ClientHacks hack;
protected HTTPRequest (HTTPServer http_server,
Soup.Server server,
Soup.ServerMessage msg) {
this.http_server = http_server;
this.cancellable = new Cancellable ();
this.root_container = http_server.root_container;
this.server = server;
this.msg = msg;
try {
this.hack = ClientHacks.create (msg);
} catch (Error error) { }
}
public async void run () {
this.server.pause_message (this.msg);
try {
// If a hack as rewritten the request uri, it will have added a
// "Location" header, so we use that.
var location = this.msg.get_response_headers ().get_one ("Location");
string path;
if (location != null) {
path = GLib.Uri.parse (location, GLib.UriFlags.NONE).get_path ();
} else {
path = this.msg.get_uri ().get_path ();
}
this.uri = new HTTPItemURI.from_string (path, this.http_server);
yield this.find_item ();
yield this.handle ();
} catch (Error error) {
this.handle_error (error);
}
// break probable cyclic references
this.cancellable = null;
}
protected abstract async void handle () throws Error;
protected virtual async void find_item () throws Error {
// Fetch the requested item
var media_object = yield this.root_container.find_object
(this.uri.item_id, null);
if (media_object == null ||
!((media_object is MediaContainer &&
this.uri.resource_name != null) ||
(media_object is MediaFileItem))) {
throw new HTTPRequestError.NOT_FOUND
(_("Requested item “%s” not found"),
this.uri.item_id);
}
this.object = media_object;
}
protected void handle_error (Error error) {
warning ("%s", error.message);
this.server.unpause_message (this.msg);
uint status;
if (error is HTTPRequestError) {
status = error.code;
} else {
status = Soup.Status.NOT_FOUND;
}
this.end (status, error.message);
}
protected void end (uint status, string ? reason = null) {
if (status != Soup.Status.NONE) {
this.msg.set_status (status, reason);
}
this.completed ();
}
}
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