This should be possible using Empathy's libempathy-gtk. Any hints from Empathy devels?

AFAIK the IRC connection manager does not support file transfers.

I have a semi-working patch to add empathy-based file transfers to nautilus-sendto but empathy from svn trunk does not yet support file transfers.

When the file transfer code will be merged in empathy I will open a bug to add an empathy backend to nst.

(In reply to comment #2)
> AFAIK the IRC connection manager does not support file transfers.
> 
> I have a semi-working patch to add empathy-based file transfers to
> nautilus-sendto but empathy from svn trunk does not yet support file transfers.
> 
> When the file transfer code will be merged in empathy I will open a bug to add
> an empathy backend to nst.

This bug is in nautilus-sendto :)

Do you have an opened bug for empathy itself?

See bug #462172

Don't reassign the bugs please, otherwise we won't get to see your patches. Feel free to work on it though :)

Created attachment 124017 [details] [review]
Initial empathy plugin

Here's an initial empathy plugin.

This works fine unless Empathy isn't running or is offline when I get some weird segfault that I don't really understand at the moment.

I'll take a further look at this now, but feel free to make this problem a little clearer.

Here's the backtrace:

Program received signal SIGSEGV, Segmentation fault.

+ Trace 210515

Some quick comments:

 - In get_selected_contact(): gtk_tree_model_get returns a new ref and you never unref the contact.
 - if (!accounts || g_slist_length (accounts) == 0) --> accounts==NULL if and only if the length of the list is 0.
 - In init(), you can use mc_accounts_list_free() instead of going through the list and unref them all and then free the list.

Otherwise it seems OK. I have no idea for your crash :/

And you either need to require the telepathy-glib.pc file, or have empathy require it in its pkg-config file:

In file included from empathy.c:29:
/usr/include/libempathy/empathy-debug.h:28:34: error: telepathy-glib/debug.h: No such file or directory
In file included from /usr/include/libmissioncontrol/mc-profile.h:81,
                 from /usr/include/libmissioncontrol/mc-account.h:73,
                 from /usr/include/libempathy/empathy-contact-manager.h:27,
                 from empathy.c:30:
/usr/include/libmissioncontrol/mission-control.h:38:34: error: libtelepathy/tp-conn.h: No such file or directory
/usr/include/libmissioncontrol/mission-control.h:39:39: error: telepathy-glib/connection.h: No such file or directory
/usr/include/libmissioncontrol/mission-control.h:40:36: error: telepathy-glib/channel.h: No such file or directory
In file included from /usr/include/libmissioncontrol/mc-profile.h:81,
                 from /usr/include/libmissioncontrol/mc-account.h:73,
                 from /usr/include/libempathy/empathy-contact-manager.h:27,
                 from empathy.c:30:
/usr/include/libmissioncontrol/mission-control.h:133: error: expected specifier-qualifier-list before 'TpConnectionStatus'
In file included from /usr/include/libmissioncontrol/mc-profile.h:81,
                 from /usr/include/libmissioncontrol/mc-account.h:73,
                 from /usr/include/libempathy/empathy-contact-manager.h:27,
                 from empathy.c:30:
/usr/include/libmissioncontrol/mission-control.h:168: error: expected declaration specifiers or '...' before 'TpHandleType'
/usr/include/libmissioncontrol/mission-control.h:176: error: expected declaration specifiers or '...' before 'TpHandleType'
/usr/include/libmissioncontrol/mission-control.h:185: error: expected declaration specifiers or '...' before 'TpHandleType'
/usr/include/libmissioncontrol/mission-control.h:204: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token
/usr/include/libmissioncontrol/mission-control.h:208: error: expected declaration specifiers or '...' before 'TpConn'
/usr/include/libmissioncontrol/mission-control.h:211: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token
/usr/include/libmissioncontrol/mission-control.h:216: error: expected declaration specifiers or '...' before 'TpConnection'
/usr/include/libmissioncontrol/mission-control.h:238: error: expected declaration specifiers or '...' before 'TpConnection'
In file included from /usr/include/libempathy/empathy-contact-list.h:28,
                 from /usr/include/libempathy/empathy-contact-manager.h:31,
                 from empathy.c:30:
/usr/include/libempathy/empathy-tp-group.h:61: error: expected ')' before '*' token
In file included from empathy.c:31:
/usr/include/libempathy/empathy-dispatcher.h:55: error: expected specifier-qualifier-list before 'TpChannel'
/usr/include/libempathy/empathy-dispatcher.h:63: error: expected declaration specifiers or '...' before 'TpChannel'
In file included from empathy.c:32:
/usr/include/libempathy/empathy-utils.h:100: error: expected ')' before '*' token
/usr/include/libempathy/empathy-utils.h:110: error: expected ')' before '*' token
/usr/include/libempathy/empathy-utils.h:115: error: expected ')' before '*' token
empathy.c: In function 'validate_destination':
empathy.c:121: warning: implicit declaration of function 'empathy_contact_can_send_files'
empathy.c:121: warning: nested extern declaration of 'empathy_contact_can_send_files'
empathy.c: In function 'send_files':
empathy.c:153: warning: implicit declaration of function 'empathy_dispatcher_send_file'
empathy.c:153: warning: nested extern declaration of 'empathy_dispatcher_send_file'
make[4]: *** [empathy.lo] Error 1

And I guess the required version also needs updating (with empathy-devel-2.24.1-1.fc10.x86_64):
empathy.c: In function 'validate_destination':
empathy.c:121: warning: implicit declaration of function 'empathy_contact_can_send_files'
empathy.c:121: warning: nested extern declaration of 'empathy_contact_can_send_files'
empathy.c: In function 'send_files':
empathy.c:153: warning: implicit declaration of function 'empathy_dispatcher_send_file'
empathy.c:153: warning: nested extern declaration of 'empathy_dispatcher_send_file'

(In reply to comment #8)
> And you either need to require the telepathy-glib.pc file, or have empathy
> require it in its pkg-config file:

Seems an empathy bug. it should require telepathy-glib in its .pc file.

You need Empathy 2.25.2 to have file transfer support.

If Empathy and MC don't both have a Requires.private on telepathy-glib, they should each add one (and if they use headers from libtelepathy/ then they need Requires.private: libtelepathy as well).

If they have a suitable Requires.private already, you may have been bitten by <https://bugzilla.redhat.com/show_bug.cgi?id=426106>.

Fixed in Empathy trunk.

Created attachment 125484 [details] [review]
Working empathy plugin

(In reply to comment #7)
>  - In get_selected_contact(): gtk_tree_model_get returns a new ref and you
> never unref the contact.

Fixed.

>  - if (!accounts || g_slist_length (accounts) == 0) --> accounts==NULL if and
> only if the length of the list is 0.

Hm, okay. I used g_slist_length because it looks prettier.

>  - In init(), you can use mc_accounts_list_free() instead of going through the
> list and unref them all and then free the list.

As discussed with you, this is not possible as mc_accounts_list_free expects a GList, not a GSList.

So, here is an updated patch. This actually works even when Empathy is loaded.

I'm blindly committing, as I don't have a chance of testing this in the short term.

2008-12-29  Jonny Lamb  <jonny.lamb@collabora.co.uk>

        * configure.in:
        * src/plugins/Makefile.am:
        * src/plugins/empathy.c: Added empathy plugin.

Could you please file a separate bug about using EmpathyContactSelector in nautilus-sendto, and make it depend on the empathy-gtk bug tracking the addition of that widget?

Bastien: Do you have any objection if I take the maintainership of src/plugins/empathy.c ? I have SVN access, so I can update for future API breakage in libempathy (we already have one planned...)

Of course for any change outside that file I'll poste patche and ask for approuval.

Re: EmpathyContactSelector, I just submitted bug #567065.