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/*
* dump-certificates.c - Dump all Certificates from TLS Handshake
* Copyright (C) 2011 Collabora Ltd.
* @author Stef Walter <stefw@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <gio/gio.h>
#include <wocky/wocky.h>
#include <gnutls/x509.h>
static GMainLoop *mainloop;
typedef struct {
WockyTLSHandler parent;
} DumpTLSHandler;
typedef struct {
WockyTLSHandlerClass parent_class;
} DumpTLSHandlerClass;
GType dump_tls_handler_get_type (void);
G_DEFINE_TYPE (DumpTLSHandler, dump_tls_handler, WOCKY_TYPE_TLS_HANDLER)
static void
dump_tls_handler_init (DumpTLSHandler *self)
{
}
static void
dump_tls_handler_verify_async (WockyTLSHandler *self,
WockyTLSSession *tls_session,
const gchar *peername,
GStrv extra_identities,
GAsyncReadyCallback callback,
gpointer user_data)
{
GSimpleAsyncResult *res;
GPtrArray *chain;
gnutls_x509_crt_t cert;
gnutls_datum_t datum;
gchar buffer[1024 * 20];
gsize length;
guint i;
chain = wocky_tls_session_get_peers_certificate (tls_session, NULL);
for (i = 0; i < chain->len; i++)
{
GArray *cert_data = g_ptr_array_index (chain, i);
datum.data = (gpointer)cert_data->data;
datum.size = cert_data->len;
if (gnutls_x509_crt_init (&cert) < 0)
g_assert_not_reached ();
if (gnutls_x509_crt_import (cert, &datum, GNUTLS_X509_FMT_DER) < 0)
{
g_warning ("couldn't parse certificate %u in chain", i);
gnutls_x509_crt_deinit (cert);
continue;
}
length = sizeof (buffer);
gnutls_x509_crt_get_dn (cert, buffer, &length);
g_print ("Subject: %.*s\n", (gint) length, buffer);
length = sizeof (buffer);
gnutls_x509_crt_get_issuer_dn (cert, buffer, &length);
g_print ("Issuer: %.*s\n", (gint) length, buffer);
length = sizeof (buffer);
if (gnutls_x509_crt_export (cert, GNUTLS_X509_FMT_PEM, buffer, &length) < 0)
{
g_warning ("couldn't export certificate %u in chain", i);
gnutls_x509_crt_deinit (cert);
continue;
}
g_print ("%.*s\n", (gint) length, buffer);
gnutls_x509_crt_deinit (cert);
}
g_ptr_array_unref (chain);
res = g_simple_async_result_new (G_OBJECT (self), callback, user_data,
dump_tls_handler_verify_async);
g_simple_async_result_complete_in_idle (res);
g_object_unref (res);
}
static gboolean
dump_tls_handler_verify_finish (WockyTLSHandler *self,
GAsyncResult *result,
GError **error)
{
return !g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (result),
error);
}
static void
dump_tls_handler_class_init (DumpTLSHandlerClass *klass)
{
WockyTLSHandlerClass *handler_class = WOCKY_TLS_HANDLER_CLASS (klass);
handler_class->verify_async_func = dump_tls_handler_verify_async;
handler_class->verify_finish_func = dump_tls_handler_verify_finish;
}
static void
connected_cb (
GObject *source,
GAsyncResult *res,
gpointer user_data)
{
g_main_loop_quit (mainloop);
}
int
main (int argc,
char **argv)
{
char *jid, *password;
WockyConnector *connector;
WockyTLSHandler *handler;
gchar* server = NULL;
guint port = 5222;
g_type_init ();
wocky_init ();
if (!(argc == 2 || argc == 4))
{
g_printerr ("Usage: %s <jid> [<server> <port>]\n", argv[0]);
return -1;
}
jid = argv[1];
if (argc == 4)
{
server = argv[2];
port = atoi (argv[3]);
}
/* This example doesn't use your real password because it does not actually
* validate certificates: it just dumps them then declares them valid.
*/
password = "not a chance";
mainloop = g_main_loop_new (NULL, FALSE);
handler = g_object_new (dump_tls_handler_get_type (), NULL);
connector = wocky_connector_new (jid, password, NULL, NULL, handler);
if (argc == 4)
g_object_set (G_OBJECT (connector), "xmpp-server", server, "xmpp-port", port, NULL);
wocky_connector_connect_async (connector, NULL, connected_cb, NULL);
g_main_loop_run (mainloop);
g_object_unref (connector);
g_main_loop_unref (mainloop);
return 0;
}
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