diff options
Diffstat (limited to 'src/lib/guid.h')
-rw-r--r-- | src/lib/guid.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/lib/guid.h b/src/lib/guid.h new file mode 100644 index 0000000..0bf58d8 --- /dev/null +++ b/src/lib/guid.h @@ -0,0 +1,52 @@ +#ifndef GUID_H +#define GUID_H + +#define GUID_128_SIZE 16 +typedef uint8_t guid_128_t[GUID_128_SIZE]; + +#define GUID_128_HOST_HASH_SIZE 4 + +ARRAY_DEFINE_TYPE(guid_128_t, guid_128_t); + +enum uuid_format { + FORMAT_RECORD, + FORMAT_COMPACT, + FORMAT_MICROSOFT, +}; +/* Generate a GUID (contains host name) */ +const char *guid_generate(void); +/* Generate 128 bit GUID */ +void guid_128_generate(guid_128_t guid_r); +/* Returns TRUE if GUID is empty (not set / unknown). */ +bool guid_128_is_empty(const guid_128_t guid) ATTR_PURE; +static inline void guid_128_empty(guid_128_t guid) +{ + memset(guid, 0, GUID_128_SIZE); +} +/* Returns TRUE if two GUIDs are equal. */ +bool guid_128_equals(const guid_128_t guid1, const guid_128_t guid2) ATTR_PURE; +/* Copy GUID */ +static inline void guid_128_copy(guid_128_t dest, const guid_128_t src) +{ + memcpy(dest, src, GUID_128_SIZE); +} + +/* Returns GUID as a hex string. */ +const char *guid_128_to_string(const guid_128_t guid); +/* Parse GUID from a string. Returns 0 if ok, -1 if GUID isn't valid. */ +int guid_128_from_string(const char *str, guid_128_t guid_r); + +/* Returns GUID as a UUID hex string. */ +const char *guid_128_to_uuid_string(const guid_128_t guid, enum uuid_format format); +/* Parse GUID from a UUID string. Returns 0 if ok, -1 if UUID isn't valid. */ +int guid_128_from_uuid_string(const char *str, guid_128_t guid_r); + +/* guid_128 hash/cmp functions for hash.h */ +unsigned int guid_128_hash(const guid_128_t guid) ATTR_PURE; +int guid_128_cmp(const guid_128_t guid1, const guid_128_t guid2) ATTR_PURE; + +/* Return the hash of host used by guid_128_generate(). */ +void guid_128_host_hash_get(const char *host, + unsigned char hash_r[STATIC_ARRAY GUID_128_HOST_HASH_SIZE]); + +#endif |