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 on of
  29  the exported functions here begins with KEY_PRINTING 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
  53         p = path + strlen( KEY_SHARES );
  54
  55         if ( *p == '\\' )
  56                 p++;
  57
  58         if ( *p )
  59                 return SMB_STRDUP(p);
  60         else
  61                 return NULL;
  62 }
  63
  64 /**********************************************************************
  65  Enumerate registry subkey names given a registry path.
  66  Caller is responsible for freeing memory to **subkeys
  67  *********************************************************************/
  68
  69 static int shares_subkey_info( const char *key, REGSUBKEY_CTR *subkey_ctr )
  70 {
  71         char            *path;
  72         bool            top_level = False;
  73         int             num_subkeys = 0;
  74
  75         DEBUG(10,("printing_subkey_info: key=>[%s]\n", key));
  76
  77         path = trim_reg_path( key );
  78
  79         /* check to see if we are dealing with the top level key */
  80
  81         if ( !path )
  82                 top_level = True;
  83
  84         if ( top_level ) {
  85                 num_subkeys = 1;
  86                 regsubkey_ctr_addkey( subkey_ctr, "Security" );
  87         }
  88 #if 0
  89         else
  90                 num_subkeys = handle_share_subpath( path, subkey_ctr, NULL );
  91 #endif
  92
  93         SAFE_FREE( path );
  94
  95         return num_subkeys;
  96 }
  97
  98 /**********************************************************************
  99  Enumerate registry values given a registry path.
 100  Caller is responsible for freeing memory
 101  *********************************************************************/
 102
 103 static int shares_value_info( const char *key, REGVAL_CTR *val )
 104 {
 105         char            *path;
 106         bool            top_level = False;
 107         int             num_values = 0;
 108
 109         DEBUG(10,("printing_value_info: key=>[%s]\n", key));
 110
 111         path = trim_reg_path( key );
 112
 113         /* check to see if we are dealing with the top level key */
 114
 115         if ( !path )
 116                 top_level = True;
 117
 118         /* fill in values from the getprinterdata_printer_server() */
 119         if ( top_level )
 120                 num_values = 0;
 121 #if 0
 122         else
 123                 num_values = handle_printing_subpath( path, NULL, val );
 124 #endif
 125
 126         SAFE_FREE(path);
 127
 128         return num_values;
 129 }
 130
 131 /**********************************************************************
 132  Stub function which always returns failure since we don't want
 133  people storing printing information directly via regostry calls
 134  (for now at least)
 135  *********************************************************************/
 136
 137 static bool shares_store_subkey( const char *key, REGSUBKEY_CTR *subkeys )
 138 {
 139         return False;
 140 }
 141
 142 /**********************************************************************
 143  Stub function which always returns failure since we don't want
 144  people storing printing information directly via regostry calls
 145  (for now at least)
 146  *********************************************************************/
 147
 148 static bool shares_store_value( const char *key, REGVAL_CTR *val )
 149 {
 150         return False;
 151 }
 152
 153 /*
 154  * Table of function pointers for accessing printing data
 155  */
 156
 157 REGISTRY_OPS shares_reg_ops = {
 158         .fetch_subkeys = shares_subkey_info,
 159         .fetch_values = shares_value_info,
 160         .store_subkeys = shares_store_subkey,
 161         .store_values = shares_store_value,
 162 };
 163
 164