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/*
* Unix SMB/CIFS implementation.
* Virtual Windows Registry Layer
* Copyright (C) Gerald Carter 2002-2005
* Copyright (c) Andreas Schneider <asn@samba.org> 2010
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/* Implementation of registry virtual views for printing information */
#include "includes.h"
#include "registry.h"
#include "reg_util_internal.h"
#include "reg_backend_db.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_REGISTRY
/* registry paths used in the print_registry[] */
#define KEY_CONTROL_PRINTERS "HKLM\\SYSTEM\\CURRENTCONTROLSET\\CONTROL\\PRINT\\PRINTERS"
#define KEY_WINNT_PRINTERS "HKLM\\SOFTWARE\\MICROSOFT\\WINDOWS NT\\CURRENTVERSION\\PRINT\\PRINTERS"
/* callback table for various registry paths below the ones we service in this module */
struct reg_dyn_tree {
/* full key path in normalized form */
const char *path;
/* callbscks for fetch/store operations */
int ( *fetch_subkeys) ( const char *path, struct regsubkey_ctr *subkeys );
bool (*store_subkeys) ( const char *path, struct regsubkey_ctr *subkeys );
int (*fetch_values) ( const char *path, struct regval_ctr *values );
bool (*store_values) ( const char *path, struct regval_ctr *values );
};
/*********************************************************************
*********************************************************************
** "HKLM/SYSTEM/CURRENTCONTROLSET/CONTROL/PRINT/PRINTERS"
** "HKLM/SOFTWARE/MICROSOFT/WINDOWS NT/CURRENTVERSION/PRINT/PRINTERS"
*********************************************************************
*********************************************************************/
static char *create_printer_registry_path(TALLOC_CTX *mem_ctx, const char *key) {
char *path;
char *subkey = NULL;
path = talloc_strdup(mem_ctx, key);
if (path == NULL) {
return NULL;
}
path = normalize_reg_path(mem_ctx, path);
if (path == NULL) {
return NULL;
}
if (strncmp(path, KEY_CONTROL_PRINTERS, strlen(KEY_CONTROL_PRINTERS)) == 0) {
subkey = reg_remaining_path(mem_ctx, key + strlen(KEY_CONTROL_PRINTERS));
if (subkey == NULL) {
return NULL;
}
return talloc_asprintf(mem_ctx, "%s\\%s", KEY_WINNT_PRINTERS, subkey);
}
return NULL;
}
/*********************************************************************
*********************************************************************/
static int key_printers_fetch_keys( const char *key, struct regsubkey_ctr *subkeys )
{
TALLOC_CTX *ctx = talloc_tos();
char *printers_key;
printers_key = create_printer_registry_path(ctx, key);
if (printers_key == NULL) {
/* normalize on the 'HKLM\SOFTWARE\....\Print\Printers' key */
return regdb_fetch_keys(KEY_WINNT_PRINTERS, subkeys);
}
return regdb_fetch_keys(printers_key, subkeys);
}
/**********************************************************************
*********************************************************************/
static bool key_printers_store_keys( const char *key, struct regsubkey_ctr *subkeys )
{
TALLOC_CTX *ctx = talloc_tos();
char *printers_key;
printers_key = create_printer_registry_path(ctx, key);
if (printers_key == NULL) {
/* normalize on the 'HKLM\SOFTWARE\....\Print\Printers' key */
return regdb_store_keys(KEY_WINNT_PRINTERS, subkeys);
}
return regdb_store_keys(printers_key, subkeys);
}
/**********************************************************************
*********************************************************************/
static int key_printers_fetch_values(const char *key, struct regval_ctr *values)
{
TALLOC_CTX *ctx = talloc_tos();
char *printers_key;
printers_key = create_printer_registry_path(ctx, key);
if (printers_key == NULL) {
/* normalize on the 'HKLM\SOFTWARE\....\Print\Printers' key */
return regdb_fetch_values(KEY_WINNT_PRINTERS, values);
}
return regdb_fetch_values(printers_key, values);
}
/**********************************************************************
*********************************************************************/
static bool key_printers_store_values(const char *key, struct regval_ctr *values)
{
TALLOC_CTX *ctx = talloc_tos();
char *printers_key;
printers_key = create_printer_registry_path(ctx, key);
if (printers_key == NULL) {
/* normalize on the 'HKLM\SOFTWARE\....\Print\Printers' key */
return regdb_store_values(KEY_WINNT_PRINTERS, values);
}
return regdb_store_values(printers_key, values);
}
/**********************************************************************
*********************************************************************
** Structure to hold dispatch table of ops for various printer keys.
** Make sure to always store deeper keys along the same path first so
** we ge a more specific match.
*********************************************************************
*********************************************************************/
static struct reg_dyn_tree print_registry[] = {
{ KEY_CONTROL_PRINTERS,
&key_printers_fetch_keys,
&key_printers_store_keys,
&key_printers_fetch_values,
&key_printers_store_values },
{ NULL, NULL, NULL, NULL, NULL }
};
/**********************************************************************
*********************************************************************
** Main reg_printing interface functions
*********************************************************************
*********************************************************************/
/***********************************************************************
Lookup a key in the print_registry table, returning its index.
-1 on failure
**********************************************************************/
static int match_registry_path(const char *key)
{
int i;
char *path = NULL;
TALLOC_CTX *ctx = talloc_tos();
if ( !key )
return -1;
path = talloc_strdup(ctx, key);
if (!path) {
return -1;
}
path = normalize_reg_path(ctx, path);
if (!path) {
return -1;
}
for ( i=0; print_registry[i].path; i++ ) {
if (strncmp( path, print_registry[i].path, strlen(print_registry[i].path) ) == 0 )
return i;
}
return -1;
}
/***********************************************************************
**********************************************************************/
static int regprint_fetch_reg_keys( const char *key, struct regsubkey_ctr *subkeys )
{
int i = match_registry_path( key );
if ( i == -1 )
return -1;
if ( !print_registry[i].fetch_subkeys )
return -1;
return print_registry[i].fetch_subkeys( key, subkeys );
}
/**********************************************************************
*********************************************************************/
static bool regprint_store_reg_keys( const char *key, struct regsubkey_ctr *subkeys )
{
int i = match_registry_path( key );
if ( i == -1 )
return False;
if ( !print_registry[i].store_subkeys )
return False;
return print_registry[i].store_subkeys( key, subkeys );
}
/**********************************************************************
*********************************************************************/
static int regprint_fetch_reg_values(const char *key, struct regval_ctr *values)
{
int i = match_registry_path( key );
if ( i == -1 )
return -1;
/* return 0 values by default since we know the key had
to exist because the client opened a handle */
if ( !print_registry[i].fetch_values )
return 0;
return print_registry[i].fetch_values( key, values );
}
/**********************************************************************
*********************************************************************/
static bool regprint_store_reg_values(const char *key, struct regval_ctr *values)
{
int i = match_registry_path( key );
if ( i == -1 )
return False;
if ( !print_registry[i].store_values )
return False;
return print_registry[i].store_values( key, values );
}
/*
* Table of function pointers for accessing printing data
*/
struct registry_ops printing_ops = {
.fetch_subkeys = regprint_fetch_reg_keys,
.fetch_values = regprint_fetch_reg_values,
.store_subkeys = regprint_store_reg_keys,
.store_values = regprint_store_reg_values,
};
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