r23432: Remove superfluous comment.
[Samba/bb.git] / source3 / lib / util_uuid.c
blob6374c2d8a9498031bbc4c4460955e1cb73633811
1 /*
2 * Unix SMB/CIFS implementation.
3 * UUID server routines
4 * Copyright (C) Theodore Ts'o 1996, 1997,
5 * Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002, 2003
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include "includes.h"
25 * Offset between 15-Oct-1582 and 1-Jan-70
27 #define TIME_OFFSET_HIGH 0x01B21DD2
28 #define TIME_OFFSET_LOW 0x13814000
30 void smb_uuid_pack(const struct GUID uu, UUID_FLAT *ptr)
32 SIVAL(ptr->info, 0, uu.time_low);
33 SSVAL(ptr->info, 4, uu.time_mid);
34 SSVAL(ptr->info, 6, uu.time_hi_and_version);
35 memcpy(ptr->info+8, uu.clock_seq, 2);
36 memcpy(ptr->info+10, uu.node, 6);
39 void smb_uuid_unpack(const UUID_FLAT in, struct GUID *uu)
41 uu->time_low = IVAL(in.info, 0);
42 uu->time_mid = SVAL(in.info, 4);
43 uu->time_hi_and_version = SVAL(in.info, 6);
44 memcpy(uu->clock_seq, in.info+8, 2);
45 memcpy(uu->node, in.info+10, 6);
48 struct GUID smb_uuid_unpack_static(const UUID_FLAT in)
50 static struct GUID uu;
52 smb_uuid_unpack(in, &uu);
53 return uu;
56 void smb_uuid_generate_random(struct GUID *uu)
58 UUID_FLAT tmp;
60 generate_random_buffer(tmp.info, sizeof(tmp.info));
61 smb_uuid_unpack(tmp, uu);
63 uu->clock_seq[0] = (uu->clock_seq[0] & 0x3F) | 0x80;
64 uu->time_hi_and_version = (uu->time_hi_and_version & 0x0FFF) | 0x4000;
67 char *smb_uuid_to_string(const struct GUID uu)
69 char *out;
71 asprintf(&out, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
72 uu.time_low, uu.time_mid, uu.time_hi_and_version,
73 uu.clock_seq[0], uu.clock_seq[1],
74 uu.node[0], uu.node[1], uu.node[2],
75 uu.node[3], uu.node[4], uu.node[5]);
77 return out;
80 const char *smb_uuid_string_static(const struct GUID uu)
82 static char out[37];
84 slprintf(out, sizeof(out),
85 "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
86 uu.time_low, uu.time_mid, uu.time_hi_and_version,
87 uu.clock_seq[0], uu.clock_seq[1],
88 uu.node[0], uu.node[1], uu.node[2],
89 uu.node[3], uu.node[4], uu.node[5]);
90 return out;
93 BOOL smb_string_to_uuid(const char *in, struct GUID* uu)
95 BOOL ret = False;
96 const char *ptr = in;
97 char *end = (char *)in;
98 int i;
99 unsigned v1, v2;
101 if (!in || !uu) goto out;
103 uu->time_low = strtoul(ptr, &end, 16);
104 if ((end - ptr) != 8 || *end != '-') goto out;
105 ptr = (end + 1);
107 uu->time_mid = strtoul(ptr, &end, 16);
108 if ((end - ptr) != 4 || *end != '-') goto out;
109 ptr = (end + 1);
111 uu->time_hi_and_version = strtoul(ptr, &end, 16);
112 if ((end - ptr) != 4 || *end != '-') goto out;
113 ptr = (end + 1);
115 if (sscanf(ptr, "%02x%02x", &v1, &v2) != 2) {
116 goto out;
118 uu->clock_seq[0] = v1;
119 uu->clock_seq[1] = v2;
120 ptr += 4;
122 if (*ptr != '-') goto out;
123 ptr++;
125 for (i = 0; i < 6; i++) {
126 if (sscanf(ptr, "%02x", &v1) != 1) {
127 goto out;
129 uu->node[i] = v1;
130 ptr += 2;
133 ret = True;
134 out:
135 return ret;