source4/librpc/ndr/uuid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    UUID/GUID functions
   5
   6    Copyright (C) Theodore Ts'o               1996, 1997,
   7    Copyright (C) Jim McDonough                     2002.
   8    Copyright (C) Andrew Tridgell                   2003.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "includes.h"
  25
  26 /**
  27   build a GUID from a string
  28 */
  29 _PUBLIC_ NTSTATUS GUID_from_string(const char *s, struct GUID *guid)
  30 {
  31         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
  32         uint32_t time_low;
  33         uint32_t time_mid, time_hi_and_version;
  34         uint32_t clock_seq[2];
  35         uint32_t node[6];
  36         int i;
  37
  38         if (s == NULL) {
  39                 return NT_STATUS_INVALID_PARAMETER;
  40         }
  41
  42         if (11 == sscanf(s, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
  43                          &time_low, &time_mid, &time_hi_and_version,
  44                          &clock_seq[0], &clock_seq[1],
  45                          &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  46                 status = NT_STATUS_OK;
  47         } else if (11 == sscanf(s, "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
  48                                 &time_low, &time_mid, &time_hi_and_version,
  49                                 &clock_seq[0], &clock_seq[1],
  50                                 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  51                 status = NT_STATUS_OK;
  52         }
  53
  54         if (!NT_STATUS_IS_OK(status)) {
  55                 return status;
  56         }
  57
  58         guid->time_low = time_low;
  59         guid->time_mid = time_mid;
  60         guid->time_hi_and_version = time_hi_and_version;
  61         guid->clock_seq[0] = clock_seq[0];
  62         guid->clock_seq[1] = clock_seq[1];
  63         for (i=0;i<6;i++) {
  64                 guid->node[i] = node[i];
  65         }
  66
  67         return NT_STATUS_OK;
  68 }
  69
  70 /**
  71   build a GUID from a string
  72 */
  73 _PUBLIC_ NTSTATUS NS_GUID_from_string(const char *s, struct GUID *guid)
  74 {
  75         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
  76         uint32_t time_low;
  77         uint32_t time_mid, time_hi_and_version;
  78         uint32_t clock_seq[2];
  79         uint32_t node[6];
  80         int i;
  81
  82         if (s == NULL) {
  83                 return NT_STATUS_INVALID_PARAMETER;
  84         }
  85
  86         if (11 == sscanf(s, "%08x-%04x%04x-%02x%02x%02x%02x-%02x%02x%02x%02x",
  87                          &time_low, &time_mid, &time_hi_and_version,
  88                          &clock_seq[0], &clock_seq[1],
  89                          &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  90                 status = NT_STATUS_OK;
  91         }
  92
  93         if (!NT_STATUS_IS_OK(status)) {
  94                 return status;
  95         }
  96
  97         guid->time_low = time_low;
  98         guid->time_mid = time_mid;
  99         guid->time_hi_and_version = time_hi_and_version;
 100         guid->clock_seq[0] = clock_seq[0];
 101         guid->clock_seq[1] = clock_seq[1];
 102         for (i=0;i<6;i++) {
 103                 guid->node[i] = node[i];
 104         }
 105
 106         return NT_STATUS_OK;
 107 }
 108
 109 /**
 110  * generate a random GUID
 111  */
 112 struct GUID GUID_random(void)
 113 {
 114         struct GUID guid;
 115
 116         generate_random_buffer((uint8_t *)&guid, sizeof(guid));
 117         guid.clock_seq[0] = (guid.clock_seq[0] & 0x3F) | 0x80;
 118         guid.time_hi_and_version = (guid.time_hi_and_version & 0x0FFF) | 0x4000;
 119
 120         return guid;
 121 }
 122
 123 /**
 124  * generate an empty GUID
 125  */
 126 _PUBLIC_ struct GUID GUID_zero(void)
 127 {
 128         struct GUID guid;
 129
 130         ZERO_STRUCT(guid);
 131
 132         return guid;
 133 }
 134
 135 _PUBLIC_ BOOL GUID_all_zero(const struct GUID *u)
 136 {
 137         if (u->time_low != 0 ||
 138             u->time_mid != 0 ||
 139             u->time_hi_and_version != 0 ||
 140             u->clock_seq[0] != 0 ||
 141             u->clock_seq[1] != 0 ||
 142             !all_zero(u->node, 6)) {
 143                 return False;
 144         }
 145         return True;
 146 }
 147
 148 _PUBLIC_ BOOL GUID_equal(const struct GUID *u1, const struct GUID *u2)
 149 {
 150         if (u1->time_low != u2->time_low ||
 151             u1->time_mid != u2->time_mid ||
 152             u1->time_hi_and_version != u2->time_hi_and_version ||
 153             u1->clock_seq[0] != u2->clock_seq[0] ||
 154             u1->clock_seq[1] != u2->clock_seq[1] ||
 155             memcmp(u1->node, u2->node, 6) != 0) {
 156                 return False;
 157         }
 158         return True;
 159 }
 160
 161 _PUBLIC_ int GUID_compare(const struct GUID *u1, const struct GUID *u2)
 162 {
 163         if (u1->time_low != u2->time_low) {
 164                 return u1->time_low - u2->time_low;
 165         }
 166
 167         if (u1->time_mid != u2->time_mid) {
 168                 return u1->time_mid - u2->time_mid;
 169         }
 170
 171         if (u1->time_hi_and_version != u2->time_hi_and_version) {
 172                 return u1->time_hi_and_version - u2->time_hi_and_version;
 173         }
 174
 175         if (u1->clock_seq[0] != u2->clock_seq[0]) {
 176                 return u1->clock_seq[0] - u2->clock_seq[0];
 177         }
 178
 179         if (u1->clock_seq[1] != u2->clock_seq[1]) {
 180                 return u1->clock_seq[1] - u2->clock_seq[1];
 181         }
 182
 183         return memcmp(u1->node, u2->node, 6);
 184 }
 185
 186 /**
 187   its useful to be able to display these in debugging messages
 188 */
 189 _PUBLIC_ char *GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
 190 {
 191         return talloc_asprintf(mem_ctx,
 192                                "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
 193                                guid->time_low, guid->time_mid,
 194                                guid->time_hi_and_version,
 195                                guid->clock_seq[0],
 196                                guid->clock_seq[1],
 197                                guid->node[0], guid->node[1],
 198                                guid->node[2], guid->node[3],
 199                                guid->node[4], guid->node[5]);
 200 }
 201
 202 _PUBLIC_ char *GUID_string2(TALLOC_CTX *mem_ctx, const struct GUID *guid)
 203 {
 204         char *ret, *s = GUID_string(mem_ctx, guid);
 205         ret = talloc_asprintf(mem_ctx, "{%s}", s);
 206         talloc_free(s);
 207         return ret;
 208 }
 209
 210 _PUBLIC_ char *NS_GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
 211 {
 212         return talloc_asprintf(mem_ctx,
 213                                "%08x-%04x%04x-%02x%02x%02x%02x-%02x%02x%02x%02x",
 214                                guid->time_low, guid->time_mid,
 215                                guid->time_hi_and_version,
 216                                guid->clock_seq[0],
 217                                guid->clock_seq[1],
 218                                guid->node[0], guid->node[1],
 219                                guid->node[2], guid->node[3],
 220                                guid->node[4], guid->node[5]);
 221 }
 222
 223 _PUBLIC_ BOOL policy_handle_empty(struct policy_handle *h)
 224 {
 225         return (h->handle_type == 0 && GUID_all_zero(&h->uuid));
 226 }