Meiga Guadec 2009 English
- 1. static void _f_do_barnacle_install_properties(GObjectClass *gobject_class) { Meiga GParamSpec *pspec; /* Party code attribute */ pspec = g_param_spec_uint64 (F_DO_BARNACLE_CODE, Light content sharing from the "Barnacle code.", "Barnacle code", 0, G_MAXUINT64, desktop G_MAXUINT64 /* default value */, G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_PRIVATE); g_object_class_install_property (gobject_class, F_DO_BARNACLE_PROP_CODE, Enrique Ocaña González [email protected]
- 2. Index ● A need: content sharing ● Development process ● The result ● How it works ● Ideas for the future ● References
- 3. A need: content sharing
- 4. Motivation Many desktop applications use web services and online contents Few offer contents to other applications (P2P, servers) Use cases: ● Share files or pictures in an convenient way ● Be an agent that generates XML or RSS contents which can be consumed by an external aggregation service (planet, Yahoo pipes, etc.) ● Remotely command applications
- 5. Alternatives Dedicated server technologies: Apache+PHP, Java/Tomcat, Mono/ASP... Desktop utilities: Gnome-user-share KDE File server Opera Unite
- 6. Disadvantages Dedicated server technologies: Heavy, complex to set up Not integrated with Gnome mainloop Desktop utilities: Gnome-user-share: depends on Apache (heavy) KDE File server: Kicker applet Opera Unite: not free software
- 7. Solution Lightweight GPL application using technologies friendly with Gnome desktop: Based on GObject Easy integration with main loop Possibility of DBUS services to third parties Simplified network configuration Existent libraries: libsoup libgupnp
- 8. Libsoup 2.4 Libgupnp 0.6 Asynchronous, uses Glib Asynchronous, uses Glib main loop main loop SSL support using GNU UPnP allows to configure TLS port dedirection if Server basic and digest supported by the authentication support router SOAP and XML-RPC basic client support
- 9. Initial evolution plan Stage 1 Stage 2 Stage 3 ● Evaluate libraries ● Generate RSS ● Extend some existing Gnome feeds applications to implement ● Implement a little file functionalities such as: server similar to ● Register more KDE Public complex things: ● “Offer all your pictures as Fileserver remote calls to RSS” functions, etc. ● Code a DBUS ● “Offer the playlist of service to allow songs you've listened other programs to today to as RSS” register/unregister files for sharing Meiga está ahora aproximadamente aquí
- 11. Programming language Vala was the chosen language Advantages: Easy to use → Less development time Execution speed Previous experience Disadvantages: Evolving syntax There's no binding for all the libraries → Pure C More complex autotools integration
- 12. Real project evolution Release 0.1.0 Release 0.2.0 File server module
- 13. Real project evolution Release 0.1.0 Release 0.2.0 File server module DBUS interface for external applications
- 14. Real project evolution Release 0.1.0 Release 0.2.0 File server module DBUS interface for external applications RSS server module
- 15. Real project evolution Release 0.1.0 Release 0.2.0 File server module DBUS interface for external applications RSS server module Graphic interface
- 16. Real project evolution Release 0.1.0 Release 0.2.0 File server module DBUS interface for external applications RSS server module Graphic interface Autotools integration
- 17. Real project evolution Release 0.1.0 Release 0.2.0 File server module DBUS interface for external applications RSS server module Graphic interface Autotools integration UpnP redirection utility Release 0.1.0
- 18. Real project evolution Release 0.1.0 Release 0.2.0 File server module DBUS interface for external applications RSS server module Graphic interface Autotools integration UpnP redirection utility Release 0.1.0
- 19. Real project evolution Release 0.1.0 Release 0.2.0 Port from Glade to GtkBuilder
- 20. Real project evolution Release 0.1.0 Release 0.2.0 Port from Glade to GtkBuilder Log exposing to the graphic interface
- 21. Real project evolution Release 0.1.0 Release 0.2.0 Port from Glade to GtkBuilder Log exposing to the graphic interface Spanish and Galician internationalization
- 22. Real project evolution Release 0.1.0 Release 0.2.0 Port from Glade to GtkBuilder Log exposing to the graphic interface Spanish and Galician internationalization Bug correction
- 23. Real project evolution Release 0.1.0 Release 0.2.0 Port from Glade to GtkBuilder Log exposing to the graphic interface Spanish and Galician internationalization Bug correction Release 0.2.0
- 24. The result
- 25. Home network Router UpnP IP: 1.2.3.4 Meiga IP: 192.168.1.10 Internet Contents Remote user
- 26. Main window and system tray
- 27. Log and port redirection
- 28. Sharing a folder
- 29. Sharing a folder
- 30. Remote access
- 31. Remote access
- 32. Contents as RSS
- 33. Log
- 34. How it works
- 35. SERVER libsoup DBUS HTTP MeigaServer Meiga gui.glade Log GUI Net RssFeed RssNode Gui gui.ui NET fwlocalip fwupnp Test sh C UPnP libgupnp upnp Router C
- 36. Programmable serial asynch events management Composite action “redirect port” Some states are Connect Redirect Return reused for other composite actions Program State interpreter Action for state 1 E1 Action for state 2 E2 EN Action for state N Data Callback for state 1 Parameters Timeout control Callback for state 2 Response Callback for state N Intermediate data Sequence control
- 37. Ideas for the future
- 38. More redirection modules Redirection by SSH SERVER SSH server HTTP Net Auxiliar client NET Remote browser fwlocalip fwssh sh
- 39. Integration with other desktop applications Nautilus menu: “Share on Meiga” SERVER DBUS MeigaServer Meiga Third party utility
- 40. More server modules Function calls URL SERVER DBUS Rythmbox Playlist module MeigaServer /playlist/... Evolution /addressbook/... Contacts module
- 42. Situations to avoid Meiga shouldn't become a comprehensive interface for DBUS through HTTP (“serve everything”) ● Security holes ● There are currently more advanced utilities for network object sharing. Eg: CORBA
- 43. References
- 44. References ● http://meiga.igalia.com ● http://live.gnome.org/Vala ● http://library.gnome.org/devel/libsoup/stable/libsoup-server- howto.html ● http://dbus.freedesktop.org/doc/api/html/group__DBusBus.html ● http://raphael.slinckx.net/blog/documents/dbus-tutorial ● http://www.gupnp.org/docs/gupnp/client-tutorial.html ● http://www.upnp.org/standardizeddcps/igd.asp99 ● http://www.lrde.epita.fr/~adl/autotools.html ● http://live.gnome.org/Vala/GameDevelopmentSeries/Setup
- 45. http://meiga.igalia.com Thank you very much Questions, comments, suggestions?