76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
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/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2004-2021
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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/**
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* @file common/guid.h
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* @brief GUID manipulation declarations
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*/
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#ifndef GUID_H
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#define GUID_H
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#include "arch.h"
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#define GUID_SIZE 16 /* bytes */
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#define GUID_STR_SIZE (GUID_SIZE * 2 + 1) /* Size for string representation */
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/**
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* Use a struct for the guid so we can easily copy by assignment
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*/
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struct guid
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{
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char g[GUID_SIZE];
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};
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/**
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* Get an initialised GUID
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*
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* @return new GUID
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*/
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struct guid guid_new(void);
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/**
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* Clears an initialised GUID, so guid_is_set() returns true
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*
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* @param guid GUID to clear
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*/
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void
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guid_clear(struct guid *guid);
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/**
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* Checks if a GUID is initialised
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*
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* @param guid GUID to check (can be NULL)
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* @return non-zero if GUID is set
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*/
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int
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guid_is_set(const struct guid *guid);
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/**
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* Converts a GUID to a string representation
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*
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* @param guid GUID to represent
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* @param str pointer to at least GUID_STR_SIZE bytes to store the
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* representation
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* @return str is returned for convenience
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*/
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const char *guid_to_str(const struct guid *guid, char *str);
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#endif
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