2 * Copyright (c) 2012 Your File System Inc. All rights reserved.
10 #ifdef HAVE_UUID_UUID_H
11 # include <uuid/uuid.h>
18 #include <hcrypto/rand.h>
23 static const opr_uuid_t nilUid = {{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
26 opr_uuid_create(opr_uuid_t *uuid)
28 #if defined (AFS_NT40_ENV)
29 struct opr_uuid_unpacked raw;
31 UuidCreate((UUID *) &raw);
32 opr_uuid_pack(uuid, &raw);
34 #elif !defined(KERNEL) && defined(HAVE_UUID_GENERATE)
36 uuid_generate(uuid->data);
39 RAND_bytes(uuid->data, 16);
41 uuid->data[6] = (uuid->data[6] & 0x0F) | 0x40; /* verison is 4 */
42 uuid->data[8] = (uuid->data[8] & 0x3F) | 0x80; /* variant is DCE */
47 opr_uuid_isNil(const opr_uuid_t *uuid)
49 return opr_uuid_equal(uuid, &nilUid);
53 opr_uuid_equal(const opr_uuid_t *uuid1, const opr_uuid_t *uuid2)
55 return memcmp(uuid1, uuid2, sizeof(opr_uuid_t)) == 0;
59 opr_uuid_hash(const opr_uuid_t *uuid)
61 return opr_jhash_opaque(uuid->data, sizeof(uuid->data), 0);
66 opr_uuid_toString(const opr_uuid_t *uuid, char **string)
68 unsigned const char *p;
73 "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-"
74 "%02x%02x%02x%02x%02x%02x",
75 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
76 p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
85 opr_uuid_freeString(char *string)
91 opr_uuid_fromString(opr_uuid_t *uuid, const char *string)
96 /* XXX - Traditionally, AFS has printed UUIDs as
97 * 00000000-0000-00-00-00000000. We should perhaps also accept
100 items = sscanf(string,
101 "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-"
102 "%02x%02x%02x%02x%02x%02x",
103 &i[0], &i[1], &i[2], &i[3], &i[4], &i[5],
104 &i[6], &i[7], &i[8], &i[9], &i[10], &i[11],
105 &i[12], &i[13], &i[14], &i[15]);
107 /* Originally, AFS's printed UUIDs would take the form
108 * 00000000-0000-0000-00-00-00000000. Also handle this. */
109 items = sscanf(string,
110 "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x-%02x-"
111 "%02x%02x%02x%02x%02x%02x",
112 &i[0], &i[1], &i[2], &i[3], &i[4], &i[5],
113 &i[6], &i[7], &i[8], &i[9], &i[10], &i[11],
114 &i[12], &i[13], &i[14], &i[15]);
120 uuid->data[c] = i[c];
128 opr_uuid_pack(opr_uuid_t *uuid, const struct opr_uuid_unpacked *raw)
131 unsigned short shortval;
133 intval = htonl(raw->time_low);
134 memcpy(&uuid->data[0], &intval, sizeof(uint32_t));
136 shortval = htons(raw->time_mid);
137 memcpy(&uuid->data[4], &shortval, sizeof(uint16_t));
139 shortval = htons(raw->time_hi_and_version);
140 memcpy(&uuid->data[6], &shortval, sizeof(uint16_t));
142 uuid->data[8] = raw->clock_seq_hi_and_reserved;
143 uuid->data[9] = raw->clock_seq_low;
145 memcpy(&uuid->data[10], &raw->node, 6);
149 opr_uuid_unpack(const opr_uuid_t *uuid, struct opr_uuid_unpacked *raw)
152 unsigned short shortval;
154 memcpy(&intval, &uuid->data[0], sizeof(uint32_t));
155 raw->time_low = ntohl(intval);
157 memcpy(&shortval, &uuid->data[4], sizeof(uint16_t));
158 raw->time_mid = ntohs(shortval);
160 memcpy(&shortval, &uuid->data[6], sizeof(uint16_t));
161 raw->time_hi_and_version = ntohs(shortval);
163 raw->clock_seq_hi_and_reserved = uuid->data[8];
164 raw->clock_seq_low = uuid->data[9];
166 memcpy(&raw->node, &uuid->data[10], 6);