xrdp/sesman/xauth.c

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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Emmanuel Blindauer 2016
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
*
* @file xauth.c
* @brief XAUTHORITY handling code
*
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include <stdio.h>
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#include "log.h"
#include "os_calls.h"
#include "string_calls.h"
/******************************************************************************/
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int
add_xauth_cookie(int display, const char *file)
{
FILE *dp;
char cookie_str[33];
char cookie_bin[16];
char xauth_str[256];
int ret;
g_random(cookie_bin, 16);
g_bytes_to_hexstr(cookie_bin, 16, cookie_str, 33);
g_sprintf(xauth_str, "xauth -q -f %s add :%d . %s",
file, display, cookie_str);
dp = popen(xauth_str, "r");
if (dp == NULL)
{
LOG(LOG_LEVEL_ERROR, "Unable to launch xauth");
return 1;
}
ret = pclose(dp);
if (ret < 0)
{
LOG(LOG_LEVEL_ERROR, "An error occurred while running xauth");
return 1;
}
return 0;
}