root/source3/lib/ldb/common/ldb_controls.c

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DEFINITIONS

This source file includes following definitions.
  1. get_control_from_list
  2. save_controls
  3. check_critical_controls

   1 /* 
   2    ldb database library
   3 
   4    Copyright (C) Simo Sorce  2005
   5 
   6      ** NOTE! The following LGPL license applies to the ldb
   7      ** library. This does NOT imply that all of Samba is released
   8      ** under the LGPL
   9    
  10    This library is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU Lesser General Public
  12    License as published by the Free Software Foundation; either
  13    version 3 of the License, or (at your option) any later version.
  14 
  15    This library 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 GNU
  18    Lesser General Public License for more details.
  19 
  20    You should have received a copy of the GNU Lesser General Public
  21    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  22 */
  23 
  24 /*
  25  *  Name: ldb_controls.c
  26  *
  27  *  Component: ldb controls utility functions
  28  *
  29  *  Description: helper functions for control modules
  30  *
  31  *  Author: Simo Sorce
  32  */
  33 
  34 #include "includes.h"
  35 #include "ldb/include/includes.h"
  36 
  37 /* check if a control with the specified "oid" exist and return it */
  38 /* returns NULL if not found */
  39 struct ldb_control *get_control_from_list(struct ldb_control **controls, const char *oid)
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  40 {
  41         int i;
  42 
  43         /* check if there's a paged request control */
  44         if (controls != NULL) {
  45                 for (i = 0; controls[i]; i++) {
  46                         if (strcmp(oid, controls[i]->oid) == 0) {
  47                                 break;
  48                         }
  49                 }
  50 
  51                 return controls[i];
  52         }
  53 
  54         return NULL;
  55 }
  56 
  57 /* saves the current controls list into the "saver" and replace the one in req with a new one excluding
  58 the "exclude" control */
  59 /* returns False on error */
  60 int save_controls(struct ldb_control *exclude, struct ldb_request *req, struct ldb_control ***saver)
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  61 {
  62         struct ldb_control **lcs;
  63         int i, j;
  64 
  65         *saver = req->controls;
  66         for (i = 0; req->controls[i]; i++);
  67         if (i == 1) {
  68                 req->controls = NULL;
  69                 return 1;
  70         }
  71 
  72         lcs = talloc_array(req, struct ldb_control *, i);
  73         if (!lcs) {
  74                 return 0;
  75         }
  76 
  77         for (i = 0, j = 0; (*saver)[i]; i++) {
  78                 if (exclude == (*saver)[i]) continue;
  79                 lcs[j] = (*saver)[i];
  80                 j++;
  81         }
  82         lcs[j] = NULL;
  83 
  84         req->controls = lcs;
  85         return 1;
  86 }
  87 
  88 /* check if there's any control marked as critical in the list */
  89 /* return True if any, False if none */
  90 int check_critical_controls(struct ldb_control **controls)
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  91 {
  92         int i;
  93 
  94         if (controls == NULL) {
  95                 return 0;
  96         }
  97 
  98         for (i = 0; controls[i]; i++) {
  99                 if (controls[i]->critical) {
 100                         return 1;
 101                 }
 102         }
 103 
 104         return 0;
 105 }

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