[librest] Avoid infinite loop with wrong HTTP credentials

[Christophe Fergeau <teuf src gnome org>]

commit d2e81c42c766a8d2502dbcf59ec21fd0c22a1369
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Wed Jun 6 18:30:06 2012 +0200

    Avoid infinite loop with wrong HTTP credentials
    
    When provided with wrong credentials, libsoup will try to connect
    and emit its 'authenticate' signal as long as its callback calls
    soup_auth_authenticate. It will fail the request and report to
    the caller if this function is not called. Since the 'retrying'
    parameter to the 'authenticate' callback lets us know when the
    credentials we provided are the wrong ones, this commit makes sure
    we stop calling soup_auth_authenticate after trying the credentials
    once. Without this, libsoup will try the same request again and
    again without ever returning when provided with wrong credentials.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=658937

 rest/rest-proxy.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/rest/rest-proxy.c b/rest/rest-proxy.c
index 4ac8375..b23d29e 100644
--- a/rest/rest-proxy.c
+++ b/rest/rest-proxy.c
@@ -183,7 +183,8 @@ authenticate (RestProxy   *self,
 {
     RestProxyPrivate *priv = GET_PRIVATE (self);
 
-    soup_auth_authenticate (auth, priv->username, priv->password);
+    if (!retrying)
+      soup_auth_authenticate (auth, priv->username, priv->password);
 }
 
 static void