1 #ifndef GUID_H
2 #define GUID_H
3
4 #define GUID_128_SIZE 16
5 typedef uint8_t guid_128_t[GUID_128_SIZE];
6
7 #define GUID_128_HOST_HASH_SIZE 4
8
9 ARRAY_DEFINE_TYPE(guid_128_t, guid_128_t);
10
11 enum uuid_format {
12 FORMAT_RECORD,
13 FORMAT_COMPACT,
14 FORMAT_MICROSOFT,
15 };
16 /* Generate a GUID (contains host name) */
17 const char *guid_generate(void);
18 /* Generate 128 bit GUID */
19 void guid_128_generate(guid_128_t guid_r);
20 /* Returns TRUE if GUID is empty (not set / unknown). */
21 bool guid_128_is_empty(const guid_128_t guid) ATTR_PURE;
guid_128_empty(guid_128_t guid)22 static inline void guid_128_empty(guid_128_t guid)
23 {
24 memset(guid, 0, GUID_128_SIZE);
25 }
26 /* Returns TRUE if two GUIDs are equal. */
27 bool guid_128_equals(const guid_128_t guid1, const guid_128_t guid2) ATTR_PURE;
28 /* Copy GUID */
guid_128_copy(guid_128_t dest,const guid_128_t src)29 static inline void guid_128_copy(guid_128_t dest, const guid_128_t src)
30 {
31 memcpy(dest, src, GUID_128_SIZE);
32 }
33
34 /* Returns GUID as a hex string. */
35 const char *guid_128_to_string(const guid_128_t guid);
36 /* Parse GUID from a string. Returns 0 if ok, -1 if GUID isn't valid. */
37 int guid_128_from_string(const char *str, guid_128_t guid_r);
38
39 /* Returns GUID as a UUID hex string. */
40 const char *guid_128_to_uuid_string(const guid_128_t guid, enum uuid_format format);
41 /* Parse GUID from a UUID string. Returns 0 if ok, -1 if UUID isn't valid. */
42 int guid_128_from_uuid_string(const char *str, guid_128_t guid_r);
43
44 /* guid_128 hash/cmp functions for hash.h */
45 unsigned int guid_128_hash(const guid_128_t guid) ATTR_PURE;
46 int guid_128_cmp(const guid_128_t guid1, const guid_128_t guid2) ATTR_PURE;
47
48 /* Return the hash of host used by guid_128_generate(). */
49 void guid_128_host_hash_get(const char *host,
50 unsigned char hash_r[STATIC_ARRAY GUID_128_HOST_HASH_SIZE]);
51
52 #endif
53