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 #include "registry.h"
  24 #include "reg_util.h"
  25
  26 #undef DBGC_CLASS
  27 #define DBGC_CLASS DBGC_REGISTRY
  28
  29 /***********************************************************************
  30  Utility function for splitting the base path of a registry path off
  31  by setting base and new_path to the apprapriate offsets withing the
  32  path.
  33
  34  WARNING!!  Does modify the original string!
  35  ***********************************************************************/
  36
  37 bool reg_split_path(char *path, char **base, char **new_path)
  38 {
  39         char *p;
  40
  41         *new_path = *base = NULL;
  42
  43         if (!path) {
  44                 return false;
  45         }
  46         *base = path;
  47
  48         p = strchr(path, '\\');
  49
  50         if ( p ) {
  51                 *p = '\0';
  52                 *new_path = p+1;
  53         }
  54
  55         return true;
  56 }
  57
  58 /***********************************************************************
  59  Utility function for splitting the base path of a registry path off
  60  by setting base and new_path to the appropriate offsets withing the
  61  path.
  62
  63  WARNING!!  Does modify the original string!
  64  ***********************************************************************/
  65
  66 bool reg_split_key(char *path, char **base, char **key)
  67 {
  68         char *p;
  69
  70         *key = *base = NULL;
  71
  72         if (!path) {
  73                 return false;
  74         }
  75
  76         *base = path;
  77
  78         p = strrchr(path, '\\');
  79
  80         if (p) {
  81                 *p = '\0';
  82                 *key = p+1;
  83         }
  84
  85         return true;
  86 }
  87
  88 /**
  89  * The full path to the registry key is used as database key
  90  * after the \'s are converted to /'s.
  91  * Leading and trailing '/' and '\' characters are stripped.
  92  * Key string is also normalized to UPPER case.
  93  */
  94
  95 char *normalize_reg_path(TALLOC_CTX *ctx, const char *keyname )
  96 {
  97         char *p;
  98         char *nkeyname;
  99
 100         /* skip leading '/' and '\' chars */
 101         p = (char *)keyname;
 102         while ((*p == '/') || (*p == '\\')) {
 103                 p++;
 104         }
 105
 106         nkeyname = talloc_string_sub(ctx, p, "\\", "/");
 107         if (nkeyname == NULL) {
 108                 return NULL;
 109         }
 110
 111         /* strip trailing '/' chars */
 112         p = strrchr(nkeyname, '/');
 113         while ((p != NULL) && (p[1] == '\0')) {
 114                 *p = '\0';
 115                 p = strrchr(nkeyname, '/');
 116         }
 117
 118         strupper_m(nkeyname);
 119
 120         return nkeyname;
 121 }
 122
 123 /**
 124  * normalize ther registry path in place.
 125  */
 126 void normalize_dbkey(char *key)
 127 {
 128         size_t len = strlen(key);
 129         string_sub(key, "\\", "/", len+1);
 130         strupper_m(key);
 131 }
 132
 133 /**********************************************************************
 134  move to next non-delimter character
 135 *********************************************************************/
 136
 137 char *reg_remaining_path(TALLOC_CTX *ctx, const char *key)
 138 {
 139         char *new_path = NULL;
 140         char *p = NULL;
 141
 142         if (!key || !*key) {
 143                 return NULL;
 144         }
 145
 146         new_path = talloc_strdup(ctx, key);
 147         if (!new_path) {
 148                 return NULL;
 149         }
 150         /* normalize_reg_path( new_path ); */
 151         if (!(p = strchr(new_path, '\\')) ) {
 152                 if (!(p = strchr( new_path, '/'))) {
 153                         p = new_path;
 154                 } else {
 155                         p++;
 156                 }
 157         } else {
 158                 p++;
 159         }
 160
 161         return p;
 162 }