source3/registry/reg_util.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Virtual Windows Registry Layer (utility functions)
   4  *  Copyright (C) Gerald Carter                     2002-2005
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 /* Implementation of registry frontend view functions. */
  21
  22 #include "includes.h"
  23
  24 #undef DBGC_CLASS
  25 #define DBGC_CLASS DBGC_REGISTRY
  26
  27 /***********************************************************************
  28  Utility function for splitting the base path of a registry path off
  29  by setting base and new_path to the apprapriate offsets withing the
  30  path.
  31
  32  WARNING!!  Does modify the original string!
  33  ***********************************************************************/
  34
  35 bool reg_split_path(char *path, char **base, char **new_path)
  36 {
  37         char *p;
  38
  39         *new_path = *base = NULL;
  40
  41         if (!path) {
  42                 return false;
  43         }
  44         *base = path;
  45
  46         p = strchr(path, '\\');
  47
  48         if ( p ) {
  49                 *p = '\0';
  50                 *new_path = p+1;
  51         }
  52
  53         return true;
  54 }
  55
  56 /***********************************************************************
  57  Utility function for splitting the base path of a registry path off
  58  by setting base and new_path to the appropriate offsets withing the
  59  path.
  60
  61  WARNING!!  Does modify the original string!
  62  ***********************************************************************/
  63
  64 bool reg_split_key(char *path, char **base, char **key)
  65 {
  66         char *p;
  67
  68         *key = *base = NULL;
  69
  70         if (!path) {
  71                 return false;
  72         }
  73
  74         *base = path;
  75
  76         p = strrchr(path, '\\');
  77
  78         if (p) {
  79                 *p = '\0';
  80                 *key = p+1;
  81         }
  82
  83         return true;
  84 }
  85
  86 /**
  87  * The full path to the registry key is used as database key
  88  * after the \'s are converted to /'s.
  89  * Leading and trailing '/' and '\' characters are stripped.
  90  * Key string is also normalized to UPPER case.
  91  */
  92
  93 char *normalize_reg_path(TALLOC_CTX *ctx, const char *keyname )
  94 {
  95         char *p;
  96         char *nkeyname;
  97
  98         /* skip leading '/' and '\' chars */
  99         p = (char *)keyname;
 100         while ((*p == '/') || (*p == '\\')) {
 101                 p++;
 102         }
 103
 104         nkeyname = talloc_string_sub(ctx, p, "\\", "/");
 105         if (nkeyname == NULL) {
 106                 return NULL;
 107         }
 108
 109         /* strip trailing '/' chars */
 110         p = strrchr(nkeyname, '/');
 111         while ((p != NULL) && (p[1] == '\0')) {
 112                 *p = '\0';
 113                 p = strrchr(nkeyname, '/');
 114         }
 115
 116         strupper_m(nkeyname);
 117
 118         return nkeyname;
 119 }
 120
 121 /**
 122  * normalize ther registry path in place.
 123  */
 124 void normalize_dbkey(char *key)
 125 {
 126         size_t len = strlen(key);
 127         string_sub(key, "\\", "/", len+1);
 128         strupper_m(key);
 129 }
 130
 131 /**********************************************************************
 132  move to next non-delimter character
 133 *********************************************************************/
 134
 135 char *reg_remaining_path(TALLOC_CTX *ctx, const char *key)
 136 {
 137         char *new_path = NULL;
 138         char *p = NULL;
 139
 140         if (!key || !*key) {
 141                 return NULL;
 142         }
 143
 144         new_path = talloc_strdup(ctx, key);
 145         if (!new_path) {
 146                 return NULL;
 147         }
 148         /* normalize_reg_path( new_path ); */
 149         if (!(p = strchr(new_path, '\\')) ) {
 150                 if (!(p = strchr( new_path, '/'))) {
 151                         p = new_path;
 152                 } else {
 153                         p++;
 154                 }
 155         } else {
 156                 p++;
 157         }
 158
 159         return p;
 160 }