source3/registry/reg_backend_shares.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Virtual Windows Registry Layer
   4  *  Copyright (C) Gerald Carter                     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 virtual views for printing information */
  21
  22 #include "includes.h"
  23
  24 #undef DBGC_CLASS
  25 #define DBGC_CLASS DBGC_REGISTRY
  26
  27 /**********************************************************************
  28  It is safe to assume that every registry path passed into one of
  29  the exported functions here begins with KEY_SHARES else
  30  these functions would have never been called.  This is a small utility
  31  function to strip the beginning of the path and make a copy that the
  32  caller can modify.  Note that the caller is responsible for releasing
  33  the memory allocated here.
  34  **********************************************************************/
  35
  36 static char* trim_reg_path( const char *path )
  37 {
  38         const char *p;
  39         uint16 key_len = strlen(KEY_SHARES);
  40
  41         /*
  42          * sanity check...this really should never be True.
  43          * It is only here to prevent us from accessing outside
  44          * the path buffer in the extreme case.
  45          */
  46
  47         if ( strlen(path) < key_len ) {
  48                 DEBUG(0,("trim_reg_path: Registry path too short! [%s]\n", path));
  49                 return NULL;
  50         }
  51
  52         p = path + strlen( KEY_SHARES );
  53
  54         if ( *p == '\\' )
  55                 p++;
  56
  57         if ( *p )
  58                 return SMB_STRDUP(p);
  59         else
  60                 return NULL;
  61 }
  62
  63 /**********************************************************************
  64  Enumerate registry subkey names given a registry path.
  65  Caller is responsible for freeing memory to **subkeys
  66  *********************************************************************/
  67
  68 static int shares_subkey_info( const char *key, struct regsubkey_ctr *subkey_ctr )
  69 {
  70         char            *path;
  71         bool            top_level = False;
  72         int             num_subkeys = 0;
  73
  74         DEBUG(10,("printing_subkey_info: key=>[%s]\n", key));
  75
  76         path = trim_reg_path( key );
  77
  78         /* check to see if we are dealing with the top level key */
  79
  80         if ( !path )
  81                 top_level = True;
  82
  83         if ( top_level ) {
  84                 num_subkeys = 1;
  85                 regsubkey_ctr_addkey( subkey_ctr, "Security" );
  86         }
  87 #if 0
  88         else
  89                 num_subkeys = handle_share_subpath( path, subkey_ctr, NULL );
  90 #endif
  91
  92         SAFE_FREE( path );
  93
  94         return num_subkeys;
  95 }
  96
  97 /**********************************************************************
  98  Enumerate registry values given a registry path.
  99  Caller is responsible for freeing memory
 100  *********************************************************************/
 101
 102 static int shares_value_info(const char *key, struct regval_ctr *val)
 103 {
 104         char            *path;
 105         bool            top_level = False;
 106         int             num_values = 0;
 107
 108         DEBUG(10,("printing_value_info: key=>[%s]\n", key));
 109
 110         path = trim_reg_path( key );
 111
 112         /* check to see if we are dealing with the top level key */
 113
 114         if ( !path )
 115                 top_level = True;
 116
 117         /* fill in values from the getprinterdata_printer_server() */
 118         if ( top_level )
 119                 num_values = 0;
 120 #if 0
 121         else
 122                 num_values = handle_printing_subpath( path, NULL, val );
 123 #endif
 124
 125         SAFE_FREE(path);
 126
 127         return num_values;
 128 }
 129
 130 /**********************************************************************
 131  Stub function which always returns failure since we don't want
 132  people storing printing information directly via regostry calls
 133  (for now at least)
 134  *********************************************************************/
 135
 136 static bool shares_store_subkey( const char *key, struct regsubkey_ctr *subkeys )
 137 {
 138         return False;
 139 }
 140
 141 /**********************************************************************
 142  Stub function which always returns failure since we don't want
 143  people storing printing information directly via regostry calls
 144  (for now at least)
 145  *********************************************************************/
 146
 147 static bool shares_store_value(const char *key, struct regval_ctr *val)
 148 {
 149         return False;
 150 }
 151
 152 /*
 153  * Table of function pointers for accessing printing data
 154  */
 155
 156 struct registry_ops shares_reg_ops = {
 157         .fetch_subkeys = shares_subkey_info,
 158         .fetch_values = shares_value_info,
 159         .store_subkeys = shares_store_subkey,
 160         .store_values = shares_store_value,
 161 };
 162
 163