nsswitch/libwbclient/wbc_guid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind client API
   5
   6    Copyright (C) Gerald (Jerry) Carter 2007
   7
   8
   9    This library is free software; you can redistribute it and/or
  10    modify it under the terms of the GNU Lesser General Public
  11    License as published by the Free Software Foundation; either
  12    version 3 of the License, or (at your option) any later version.
  13
  14    This library is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17    Library General Public License for more details.
  18
  19    You should have received a copy of the GNU Lesser General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 /* Required Headers */
  24
  25 #include "replace.h"
  26 #include "libwbclient.h"
  27
  28 /* Convert a binary GUID to a character string */
  29 _PUBLIC_
  30 wbcErr wbcGuidToString(const struct wbcGuid *guid,
  31                        char **guid_string)
  32 {
  33         char *result;
  34
  35         result = (char *)wbcAllocateMemory(37, 1, NULL);
  36         if (result == NULL) {
  37                 return WBC_ERR_NO_MEMORY;
  38         }
  39         snprintf(result, 37,
  40                  "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
  41                  guid->time_low, guid->time_mid,
  42                  guid->time_hi_and_version,
  43                  guid->clock_seq[0],
  44                  guid->clock_seq[1],
  45                  guid->node[0], guid->node[1],
  46                  guid->node[2], guid->node[3],
  47                  guid->node[4], guid->node[5]);
  48         *guid_string = result;
  49
  50         return WBC_ERR_SUCCESS;
  51 }
  52
  53 /* @brief Convert a character string to a binary GUID */
  54 _PUBLIC_
  55 wbcErr wbcStringToGuid(const char *str,
  56                        struct wbcGuid *guid)
  57 {
  58         unsigned int time_low;
  59         unsigned int time_mid, time_hi_and_version;
  60         unsigned int clock_seq[2];
  61         unsigned int node[6];
  62         int i;
  63         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
  64
  65         if (!guid) {
  66                 wbc_status = WBC_ERR_INVALID_PARAM;
  67                 BAIL_ON_WBC_ERROR(wbc_status);
  68         }
  69
  70         if (!str) {
  71                 wbc_status = WBC_ERR_INVALID_PARAM;
  72                 BAIL_ON_WBC_ERROR(wbc_status);
  73         }
  74
  75         if (11 == sscanf(str, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
  76                          &time_low, &time_mid, &time_hi_and_version,
  77                          &clock_seq[0], &clock_seq[1],
  78                          &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  79                 wbc_status = WBC_ERR_SUCCESS;
  80         } else if (11 == sscanf(str, "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
  81                                 &time_low, &time_mid, &time_hi_and_version,
  82                                 &clock_seq[0], &clock_seq[1],
  83                                 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  84                 wbc_status = WBC_ERR_SUCCESS;
  85         }
  86
  87         BAIL_ON_WBC_ERROR(wbc_status);
  88
  89         guid->time_low = time_low;
  90         guid->time_mid = time_mid;
  91         guid->time_hi_and_version = time_hi_and_version;
  92         guid->clock_seq[0] = clock_seq[0];
  93         guid->clock_seq[1] = clock_seq[1];
  94
  95         for (i=0;i<6;i++) {
  96                 guid->node[i] = node[i];
  97         }
  98
  99         wbc_status = WBC_ERR_SUCCESS;
 100
 101 done:
 102         return wbc_status;
 103 }