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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) 2021 Matt Burt, all xrdp contributors
*
* 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 common/guid.c
* @brief GUID manipulation definitions
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include "guid.h"
#include "os_calls.h"
#include "string_calls.h"
struct guid
guid_new(void)
{
struct guid guid = {0};
g_random(guid.g, sizeof(guid.g));
return guid;
}
void
guid_clear(struct guid *guid)
{
g_memset(&guid->g, '\x00', GUID_SIZE);
}
int
guid_is_set(const struct guid *guid)
{
unsigned int i;
int rv = 0;
if (guid != NULL)
{
for (i = 0 ; i < GUID_SIZE; ++i)
{
if (guid->g[i] != '\x00')
{
rv = 1;
break;
}
}
}
return rv;
}
const char *guid_to_str(const struct guid *src, char *dest)
{
const unsigned char *guid = (const unsigned char *)src->g;
/*
* Flipping integers into little-endian
* See also: https://devblogs.microsoft.com/oldnewthing/20220928-00/?p=107221
*/
g_sprintf(dest, "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
guid[3], guid[2], guid[1], guid[0],
guid[5], guid[4],
guid[7], guid[6],
guid[8], guid[9],
guid[10], guid[11], guid[12], guid[13], guid[14], guid[15]);
return dest;
}
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