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 #include "registry.h"
  24 #include "reg_objects.h"
  25
  26 #undef DBGC_CLASS
  27 #define DBGC_CLASS DBGC_REGISTRY
  28
  29 /**********************************************************************
  30  It is safe to assume that every registry path passed into one of
  31  the exported functions here begins with KEY_SHARES else
  32  these functions would have never been called.  This is a small utility
  33  function to strip the beginning of the path and make a copy that the
  34  caller can modify.  Note that the caller is responsible for releasing
  35  the memory allocated here.
  36  **********************************************************************/
  37
  38 static char* trim_reg_path( const char *path )
  39 {
  40         const char *p;
  41         uint16_t key_len = strlen(KEY_SHARES);
  42
  43         /*
  44          * sanity check...this really should never be True.
  45          * It is only here to prevent us from accessing outside
  46          * the path buffer in the extreme case.
  47          */
  48
  49         if ( strlen(path) < key_len ) {
  50                 DEBUG(0,("trim_reg_path: Registry path too short! [%s]\n", path));
  51                 return NULL;
  52         }
  53
  54         p = path + strlen( KEY_SHARES );
  55
  56         if ( *p == '\\' )
  57                 p++;
  58
  59         if ( *p )
  60                 return SMB_STRDUP(p);
  61         else
  62                 return NULL;
  63 }
  64
  65 /**********************************************************************
  66  Enumerate registry subkey names given a registry path.
  67  Caller is responsible for freeing memory to **subkeys
  68  *********************************************************************/
  69
  70 static int shares_subkey_info( const char *key, struct regsubkey_ctr *subkey_ctr )
  71 {
  72         char            *path;
  73         bool            top_level = False;
  74         int             num_subkeys = 0;
  75
  76         DEBUG(10, ("shares_subkey_info: key=>[%s]\n", key));
  77
  78         path = trim_reg_path( key );
  79
  80         /* check to see if we are dealing with the top level key */
  81
  82         if ( !path )
  83                 top_level = True;
  84
  85         if ( top_level ) {
  86                 num_subkeys = 1;
  87                 regsubkey_ctr_addkey( subkey_ctr, "Security" );
  88         }
  89 #if 0
  90         else
  91                 num_subkeys = handle_share_subpath( path, subkey_ctr, NULL );
  92 #endif
  93
  94         SAFE_FREE( path );
  95
  96         return num_subkeys;
  97 }
  98
  99 /**********************************************************************
 100  Enumerate registry values given a registry path.
 101  Caller is responsible for freeing memory
 102  *********************************************************************/
 103
 104 static int shares_value_info(const char *key, struct regval_ctr *val)
 105 {
 106         char            *path;
 107         bool            top_level = False;
 108         int             num_values = 0;
 109
 110         DEBUG(10, ("shares_value_info: key=>[%s]\n", key));
 111
 112         path = trim_reg_path( key );
 113
 114         /* check to see if we are dealing with the top level key */
 115
 116         if ( !path )
 117                 top_level = True;
 118
 119         /* fill in values from the getprinterdata_printer_server() */
 120         if ( top_level )
 121                 num_values = 0;
 122 #if 0
 123         else
 124                 num_values = handle_printing_subpath( path, NULL, val );
 125 #endif
 126
 127         SAFE_FREE(path);
 128
 129         return num_values;
 130 }
 131
 132 /**********************************************************************
 133  Stub function which always returns failure since we don't want
 134  people storing share information directly via registry calls
 135  (for now at least)
 136  *********************************************************************/
 137
 138 static bool shares_store_subkey( const char *key, struct regsubkey_ctr *subkeys )
 139 {
 140         return False;
 141 }
 142
 143 /**********************************************************************
 144  Stub function which always returns failure since we don't want
 145  people storing share information directly via registry calls
 146  (for now at least)
 147  *********************************************************************/
 148
 149 static bool shares_store_value(const char *key, struct regval_ctr *val)
 150 {
 151         return False;
 152 }
 153
 154 /*
 155  * Table of function pointers for accessing printing data
 156  */
 157
 158 struct registry_ops shares_reg_ops = {
 159         .fetch_subkeys = shares_subkey_info,
 160         .fetch_values = shares_value_info,
 161         .store_subkeys = shares_store_subkey,
 162         .store_values = shares_store_value,
 163 };
 164
 165