[libsoup/wip/tpopela/negotiate: 3/8] Use SPNEGO authentication instead of basic KRB5

[Tomas Popela <tpopela src gnome org>]

commit 036a5ac93bc71a2859c8dea7b05cb4cd11e0b7e3
Author: Tomas Popela <tpopela redhat com>
Date:   Mon Oct 5 12:31:47 2015 +0200

    Use SPNEGO authentication instead of basic KRB5
    
    As suggested by Dawid Woodhouse in https://bugzilla.gnome.org/show_bug.cgi?id=587145#c54

 libsoup/soup-gssapi.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/libsoup/soup-gssapi.c b/libsoup/soup-gssapi.c
index 46225e6..b5aa0f6 100644
--- a/libsoup/soup-gssapi.c
+++ b/libsoup/soup-gssapi.c
@@ -26,6 +26,9 @@ soup_gss_client_step (SoupNegotiateConnectionState *conn, const char *host, GErr
 void
 soup_gss_client_cleanup (SoupNegotiateConnectionState *conn);
 
+static const char spnego_OID[] = "\x2b\x06\x01\x05\x05\x02";
+static const gss_OID_desc gss_mech_spnego = { 6, (void *)&spnego_OID };
+
 static void
 soup_gss_error (OM_uint32 err_maj, OM_uint32 err_min, GError **err)
 {
@@ -37,7 +40,7 @@ soup_gss_error (OM_uint32 err_maj, OM_uint32 err_min, GError **err)
                maj_stat = gss_display_status (&min_stat,
                                               err_maj,
                                               GSS_C_GSS_CODE,
-                                              GSS_C_NO_OID,
+                                              (gss_OID) &gss_mech_spnego,
                                               &msg_ctx,
                                               &status);
                if (GSS_ERROR (maj_stat))
@@ -126,7 +129,7 @@ soup_gss_client_step (SoupNegotiateConnectionState *conn, const char *challenge,
                                         GSS_C_NO_CREDENTIAL,
                                         &conn->context,
                                         conn->server_name,
-                                        GSS_C_NO_OID,
+                                        (gss_OID) &gss_mech_spnego,
                                         GSS_C_MUTUAL_FLAG,
                                         GSS_C_INDEFINITE,
                                         GSS_C_NO_CHANNEL_BINDINGS,