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 wbcErr wbcGuidToString(const struct wbcGuid *guid,
  30                        char **guid_string)
  31 {
  32         char *result;
  33
  34         result = (char *)wbcAllocateMemory(37, 1, NULL);
  35         if (result == NULL) {
  36                 return WBC_ERR_NO_MEMORY;
  37         }
  38         snprintf(result, 37,
  39                  "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
  40                  guid->time_low, guid->time_mid,
  41                  guid->time_hi_and_version,
  42                  guid->clock_seq[0],
  43                  guid->clock_seq[1],
  44                  guid->node[0], guid->node[1],
  45                  guid->node[2], guid->node[3],
  46                  guid->node[4], guid->node[5]);
  47         *guid_string = result;
  48
  49         return WBC_ERR_SUCCESS;
  50 }
  51
  52 /* @brief Convert a character string to a binary GUID */
  53 wbcErr wbcStringToGuid(const char *str,
  54                        struct wbcGuid *guid)
  55 {
  56         uint32_t time_low;
  57         uint32_t time_mid, time_hi_and_version;
  58         uint32_t clock_seq[2];
  59         uint32_t node[6];
  60         int i;
  61         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
  62
  63         if (!guid) {
  64                 wbc_status = WBC_ERR_INVALID_PARAM;
  65                 BAIL_ON_WBC_ERROR(wbc_status);
  66         }
  67
  68         if (!str) {
  69                 wbc_status = WBC_ERR_INVALID_PARAM;
  70                 BAIL_ON_WBC_ERROR(wbc_status);
  71         }
  72
  73         if (11 == sscanf(str, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
  74                          &time_low, &time_mid, &time_hi_and_version,
  75                          &clock_seq[0], &clock_seq[1],
  76                          &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  77                 wbc_status = WBC_ERR_SUCCESS;
  78         } else if (11 == sscanf(str, "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
  79                                 &time_low, &time_mid, &time_hi_and_version,
  80                                 &clock_seq[0], &clock_seq[1],
  81                                 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  82                 wbc_status = WBC_ERR_SUCCESS;
  83         }
  84
  85         BAIL_ON_WBC_ERROR(wbc_status);
  86
  87         guid->time_low = time_low;
  88         guid->time_mid = time_mid;
  89         guid->time_hi_and_version = time_hi_and_version;
  90         guid->clock_seq[0] = clock_seq[0];
  91         guid->clock_seq[1] = clock_seq[1];
  92
  93         for (i=0;i<6;i++) {
  94                 guid->node[i] = node[i];
  95         }
  96
  97         wbc_status = WBC_ERR_SUCCESS;
  98
  99 done:
 100         return wbc_status;
 101 }