Re: TLS/SSL support not available on Android even with glib-networking installed

[i iordanov <iiordanov gmail com>]

Hi Dan,

Thanks for the excellent advice. I will try what you're suggesting as
soon as possible. I hope you don't mind if I have questions to ask.

As an alternative, how do you suppose I can enable automatic discovery
of modules by GIO on Android? So far, I've tried changing the
GIO_MODULE_DIR when I build glib to be /sdcard/gio (just as a test, of
course), and I've placed the libgiognutls.so module in /sdcard/gio on
the device. This doesn't seem to work, however. Since you seem well
versed in the order of operations involved in discovering the module,
could you help me understand what other conditions I need to prepare
for the module discovery to work?

Many thanks!
iordan

On Sun, Sep 15, 2013 at 2:57 PM, Dan Winship <danw gnome org> wrote:
> On 09/15/2013 02:05 AM, i iordanov wrote:
> >         System.loadLibrary("giognutls");
> >
> > And yet, whenever govirt (the library which handles oVirt support)
> > uses libsoup, it returns an error with the contents:
> >
> > TLS/SSL support not available; install glib-networking
> >
> > Even though to my understanding, glib-networking is as "installed" as
> > I can make it on Android.
>
> Right. gio needs to be told about each module that's available in order
> to be able to use them. Normally gio handles this itself when it dlopens
> the module, but since you're bypassing that, the module never gets
> registered.
>
> If you don't have working gmodule support and can't let gio load the
> gnutls module on its own, then you'll have to hack up glib-networking a
> bit; change gtlsbackend-gnutls.c to use G_DEFINE_TYPE_EXTENDED (and
> G_IMPLEMENT_INTERFACE) at the top, rather than the _DYNAMIC versions of
> each, remove the g_type_plugin_use() call in gtls_gnutls_init(), and
> remove the GIOModule argument and g_tls_backend_gnutls_register_type()
> call from g_tls_backend_gnutls_register(). (And remove gnutls-module.c
> entirely.)
>
> Then you need to call g_tls_backend_gnutls_register() from main() or
> something, but you have to call it *after* _g_io_modules_ensure_loaded()
> is called. That function isn't currently visible outside of glib, so
> there's no way for you to call it directly. You could patch glib to make
> it be exported, but the easier hack is to just request some *other*
> extension point. Eg, call g_vfs_get_default() or
> g_proxy_resolver_get_default(), and just ignore the result, and then
> call g_tls_backend_gnutls_register().
>
> -- Dan



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