/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * Copyright (C) 2004 Imendio AB

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 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

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public

 * License along with this program; if not, see <https://www.gnu.org/licenses>

 */

/*

 * Small tool to change password on an account

 */

#include <loudmouth/loudmouth.h>

#include <string.h>

static LmSSLResponse

ssl_func (LmSSL        *ssl,

          LmSSLStatus   status,

          gpointer      user_data)

{

    return LM_SSL_RESPONSE_CONTINUE;

}

static void

print_usage (const gchar *exec_name)

{

    g_print ("Usage: %s <server> <username> <oldpassword> <newpassword> [--ssl] [--host <host>]\n",

             exec_name);

}

int

main (int argc, char **argv)

{

    LmConnection  *connection;

    const gchar   *server;

    const gchar   *username;

    const gchar   *old_pass;

    const gchar   *new_pass;

    const gchar   *host;

    GError        *error = NULL;

    LmMessage     *m;

    LmMessage     *reply;

    LmMessageNode *query;

    gboolean       use_ssl = FALSE;

    if (argc < 5) {

        print_usage (argv[0]);

        return -1;

    }

    server = argv[1];

    username = argv[2];

    old_pass = argv[3];

    new_pass = argv[4];

    host = NULL;

    if (argc >= 5) {

        int i;

        for (i = 5; i < argc; ++i) {

            if (strcmp (argv[i], "-s") == 0 ||

                strcmp (argv[i], "--ssl") == 0) {

                use_ssl = TRUE;

            }

            else if (strcmp (argv[i], "-h") == 0 ||

                     strcmp (argv[i], "--host") == 0) {

                if (++i >= argc) {

                    print_usage (argv[0]);

                    return -1;

                }

                host = argv[i];

                g_print ("HOST: %s\n", host);

            }

        }

    }

    connection = lm_connection_new (server);

    if (host) {

        gchar *jid;

        jid = g_strdup_printf ("%s@%s", username, host);

        g_print ("Setting jid to %s\n", jid);

        lm_connection_set_jid (connection, jid);

        g_free (jid);

    }

    if (use_ssl) {

        LmSSL *ssl;

        if (!lm_ssl_is_supported ()) {

            g_print ("This loudmouth installation doesn't support SSL\n");

            return 1;

        }

        g_print ("Setting ssl\n");

        ssl = lm_ssl_new (NULL, ssl_func, NULL, NULL);

        lm_connection_set_ssl (connection, ssl);

        lm_ssl_unref (ssl);

        lm_connection_set_port (connection,

                                LM_CONNECTION_DEFAULT_PORT_SSL);

    }

    if (!lm_connection_open_and_block (connection, &error)) {

        g_error ("Failed to open: %s\n", error->message);

    }

    if (!lm_connection_authenticate_and_block (connection,

                                               username, old_pass,

                                               "Password changer",

                                               &error)) {

        g_error ("Failed to authenticate: %s\n", error->message);

    }

    m = lm_message_new_with_sub_type (NULL, LM_MESSAGE_TYPE_IQ,

                                      LM_MESSAGE_SUB_TYPE_SET);

    query = lm_message_node_add_child (m->node, "query", NULL);

    lm_message_node_set_attributes (query, "xmlns", "jabber:iq:register",

                                    NULL);

    lm_message_node_add_child (query, "username", username);

    lm_message_node_add_child (query, "password", new_pass);

    reply = lm_connection_send_with_reply_and_block (connection, m, &error);

    if (!reply) {

        g_error ("Failed to change password: %s\n", error->message);

    }

    if (lm_message_get_sub_type (reply) == LM_MESSAGE_SUB_TYPE_RESULT) {

        g_print ("Password changed\n");

    } else {

        g_print ("Failed to change password\n");

        /* If this wasn't only an example we should check error code

         * here to tell the user why it failed */

    }

    lm_connection_close (connection, NULL);

    return 0;

}