/** * xrdp : A Remote Desktop Protocol server . * * Copyright ( C ) Jay Sorg 2004 - 2021 * * 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 . h * @ brief GUID manipulation declarations #ifndef GUID_H#define GUID_H#include "arch.h" #define GUID_SIZE 16 /* bytes */ #define GUID_STR_SIZE (GUID_SIZE * 2 + 4 + 1 ) /* w/ 4 hyphens + null terminator */ /** * Use a struct for the guid so we can easily copy by assignment . * We use an array of char so that * we can compare GUIDs with a straight memcmp ( ) * * Some fields of the GUID are in little - endian - order as specified by * [ MS - DTYP ] . This is at odds with RFC4122 which specifies big - endian * order for all fields . * * Octets RFC4122 field * - - - - - - - - - - - - - - - - - - - * 0 - 3 time_low ( little - endian ) * 4 - 5 time_mid ( little - endian ) * 6 - 7 time_hi_and_version ( little - endian ) * 8 clock_seq_hi_and_reserved * 9 clock_seq_low ( in order ) * 10 - 15 node struct guidchar g[GUID_SIZE];/** * Get an initialised GUID * * The GUID is compatible with RFC4122 section 4 . 4 . * * @ return new GUID struct guid guid_new(void );/** * Clears an initialised GUID , so guid_is_set ( ) returns true * * @ param guid GUID to clear void struct guid *guid);/** * Checks if a GUID is initialised * * @ param guid GUID to check ( can be NULL ) * @ return non - zero if GUID is set int const struct guid *guid);/** * Converts a GUID to a string representation * * @ param guid GUID to represent * @ param dest destionation pointer to at least GUID_STR_SIZE * bytes to store the representation * @ return dest is returned for convenience const char *guid_to_str(const struct guid *guid, char *dest);#endif
Messung V0.5 in Prozent C=91 H=100 G=95
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