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|
/*
* Unix SMB/CIFS implementation.
* RPC Pipe client / server routines
* Copyright (C) Andrew Tridgell 1992-1997.
* Copyright (C) Luke Kenneth Casson Leighton 1996-1997.
* Copyright (C) Paul Ashton 1997.
* Copyright (C) Jeremy Allison 2001.
* Copyright (C) Gerald Carter 2002.
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* Implementation of registry functions. */
#include "includes.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_SRV
#define REGSTR_PRODUCTTYPE "ProductType"
#define REG_PT_WINNT "WinNT"
#define REG_PT_LANMANNT "LanmanNT"
#define REG_PT_SERVERNT "ServerNT"
#define OUR_HANDLE(hnd) (((hnd)==NULL)?"NULL":(IVAL((hnd)->data5,4)==(uint32)sys_getpid()?"OURS":"OTHER")), \
((unsigned int)IVAL((hnd)->data5,4)),((unsigned int)sys_getpid())
static REGISTRY_KEY *regkeys_list;
/******************************************************************
free() function for REGISTRY_KEY
*****************************************************************/
static void free_regkey_info(void *ptr)
{
REGISTRY_KEY *info = (REGISTRY_KEY*)ptr;
DLIST_REMOVE(regkeys_list, info);
SAFE_FREE(info);
}
/******************************************************************
Find a registry key handle and return a REGISTRY_KEY
*****************************************************************/
static REGISTRY_KEY *find_regkey_index_by_hnd(pipes_struct *p, POLICY_HND *hnd)
{
REGISTRY_KEY *regkey = NULL;
if(!find_policy_by_hnd(p,hnd,(void **)®key)) {
DEBUG(2,("find_regkey_index_by_hnd: Registry Key not found: "));
return NULL;
}
return regkey;
}
/*******************************************************************
Function for open a new registry handle and creating a handle
Note that P should be valid & hnd should already have space
When we open a key, we store the full path to the key as
HK[LM|U]\<key>\<key>\...
*******************************************************************/
static NTSTATUS open_registry_key(pipes_struct *p, POLICY_HND *hnd, REGISTRY_KEY *parent,
const char *subkeyname, uint32 access_granted )
{
REGISTRY_KEY *regkey = NULL;
NTSTATUS result = NT_STATUS_OK;
REGSUBKEY_CTR subkeys;
pstring subkeyname2;
int subkey_len;
DEBUG(7,("open_registry_key: name = [%s][%s]\n",
parent ? parent->name : "NULL", subkeyname));
/* strip any trailing '\'s */
pstrcpy( subkeyname2, subkeyname );
subkey_len = strlen ( subkeyname2 );
if ( subkey_len && subkeyname2[subkey_len-1] == '\\' )
subkeyname2[subkey_len-1] = '\0';
if ((regkey=SMB_MALLOC_P(REGISTRY_KEY)) == NULL)
return NT_STATUS_NO_MEMORY;
ZERO_STRUCTP( regkey );
/*
* very crazy, but regedit.exe on Win2k will attempt to call
* REG_OPEN_ENTRY with a keyname of "". We should return a new
* (second) handle here on the key->name. regedt32.exe does
* not do this stupidity. --jerry
*/
if ( !subkey_len ) {
pstrcpy( regkey->name, parent->name );
}
else {
pstrcpy( regkey->name, "" );
if ( parent ) {
pstrcat( regkey->name, parent->name );
pstrcat( regkey->name, "\\" );
}
pstrcat( regkey->name, subkeyname2 );
}
/* Look up the table of registry I/O operations */
if ( !(regkey->hook = reghook_cache_find( regkey->name )) ) {
DEBUG(0,("open_registry_key: Failed to assigned a REGISTRY_HOOK to [%s]\n",
regkey->name ));
return NT_STATUS_OBJECT_PATH_NOT_FOUND;
}
/* check if the path really exists; failed is indicated by -1 */
/* if the subkey count failed, bail out */
ZERO_STRUCTP( &subkeys );
regsubkey_ctr_init( &subkeys );
if ( fetch_reg_keys( regkey, &subkeys ) == -1 ) {
/* don't really know what to return here */
result = NT_STATUS_NO_SUCH_FILE;
}
else {
/*
* This would previously return NT_STATUS_TOO_MANY_SECRETS
* that doesn't sound quite right to me --jerry
*/
if ( !create_policy_hnd( p, hnd, free_regkey_info, regkey ) )
result = NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
/* clean up */
regsubkey_ctr_destroy( &subkeys );
if ( ! NT_STATUS_IS_OK(result) )
SAFE_FREE( regkey );
else
DLIST_ADD( regkeys_list, regkey );
DEBUG(7,("open_registry_key: exit\n"));
return result;
}
/*******************************************************************
Function for open a new registry handle and creating a handle
Note that P should be valid & hnd should already have space
*******************************************************************/
static BOOL close_registry_key(pipes_struct *p, POLICY_HND *hnd)
{
REGISTRY_KEY *regkey = find_regkey_index_by_hnd(p, hnd);
if ( !regkey ) {
DEBUG(2,("close_registry_key: Invalid handle (%s:%u:%u)\n", OUR_HANDLE(hnd)));
return False;
}
close_policy_hnd(p, hnd);
return True;
}
/********************************************************************
retrieve information about the subkeys
*******************************************************************/
static BOOL get_subkey_information( REGISTRY_KEY *key, uint32 *maxnum, uint32 *maxlen )
{
int num_subkeys, i;
uint32 max_len;
REGSUBKEY_CTR subkeys;
uint32 len;
if ( !key )
return False;
ZERO_STRUCTP( &subkeys );
regsubkey_ctr_init( &subkeys );
if ( fetch_reg_keys( key, &subkeys ) == -1 )
return False;
/* find the longest string */
max_len = 0;
num_subkeys = regsubkey_ctr_numkeys( &subkeys );
for ( i=0; i<num_subkeys; i++ ) {
len = strlen( regsubkey_ctr_specific_key(&subkeys, i) );
max_len = MAX(max_len, len);
}
*maxnum = num_subkeys;
*maxlen = max_len*2;
regsubkey_ctr_destroy( &subkeys );
return True;
}
/********************************************************************
retrieve information about the values. We don't store values
here. The registry tdb is intended to be a frontend to oether
Samba tdb's (such as ntdrivers.tdb).
*******************************************************************/
static BOOL get_value_information( REGISTRY_KEY *key, uint32 *maxnum,
uint32 *maxlen, uint32 *maxsize )
{
REGVAL_CTR values;
REGISTRY_VALUE *val;
uint32 sizemax, lenmax;
int i, num_values;
if ( !key )
return False;
ZERO_STRUCTP( &values );
regval_ctr_init( &values );
if ( fetch_reg_values( key, &values ) == -1 )
return False;
lenmax = sizemax = 0;
num_values = regval_ctr_numvals( &values );
val = regval_ctr_specific_value( &values, 0 );
for ( i=0; i<num_values && val; i++ )
{
lenmax = MAX(lenmax, strlen(val->valuename)+1 );
sizemax = MAX(sizemax, val->size );
val = regval_ctr_specific_value( &values, i );
}
*maxnum = num_values;
*maxlen = lenmax;
*maxsize = sizemax;
regval_ctr_destroy( &values );
return True;
}
/********************************************************************
reg_close
********************************************************************/
NTSTATUS _reg_close(pipes_struct *p, REG_Q_CLOSE *q_u, REG_R_CLOSE *r_u)
{
/* set up the REG unknown_1 response */
ZERO_STRUCT(r_u->pol);
/* close the policy handle */
if (!close_registry_key(p, &q_u->pol))
return NT_STATUS_OBJECT_NAME_INVALID;
return NT_STATUS_OK;
}
/*******************************************************************
********************************************************************/
NTSTATUS _reg_open_hklm(pipes_struct *p, REG_Q_OPEN_HKLM *q_u, REG_R_OPEN_HKLM *r_u)
{
return open_registry_key( p, &r_u->pol, NULL, KEY_HKLM, 0x0 );
}
/*******************************************************************
********************************************************************/
NTSTATUS _reg_open_hkcr(pipes_struct *p, REG_Q_OPEN_HKCR *q_u, REG_R_OPEN_HKCR *r_u)
{
return open_registry_key( p, &r_u->pol, NULL, KEY_HKCR, 0x0 );
}
/*******************************************************************
********************************************************************/
NTSTATUS _reg_open_hku(pipes_struct *p, REG_Q_OPEN_HKU *q_u, REG_R_OPEN_HKU *r_u)
{
return open_registry_key( p, &r_u->pol, NULL, KEY_HKU, 0x0 );
}
/*******************************************************************
reg_reply_open_entry
********************************************************************/
NTSTATUS _reg_open_entry(pipes_struct *p, REG_Q_OPEN_ENTRY *q_u, REG_R_OPEN_ENTRY *r_u)
{
POLICY_HND pol;
fstring name;
REGISTRY_KEY *key = find_regkey_index_by_hnd(p, &q_u->pol);
NTSTATUS result;
DEBUG(5,("reg_open_entry: Enter\n"));
if ( !key )
return NT_STATUS_INVALID_HANDLE;
rpcstr_pull(name,q_u->uni_name.buffer,sizeof(name),q_u->uni_name.uni_str_len*2,0);
result = open_registry_key( p, &pol, key, name, 0x0 );
init_reg_r_open_entry( r_u, &pol, result );
DEBUG(5,("reg_open_entry: Exit\n"));
return r_u->status;
}
/*******************************************************************
reg_reply_info
********************************************************************/
NTSTATUS _reg_info(pipes_struct *p, REG_Q_INFO *q_u, REG_R_INFO *r_u)
{
NTSTATUS status = NT_STATUS_NO_SUCH_FILE;
fstring name;
const char *value_ascii = "";
fstring value;
int value_length;
REGISTRY_KEY *regkey = find_regkey_index_by_hnd( p, &q_u->pol );
REGISTRY_VALUE *val = NULL;
REGVAL_CTR regvals;
int i;
DEBUG(5,("_reg_info: Enter\n"));
if ( !regkey )
return NT_STATUS_INVALID_HANDLE;
DEBUG(7,("_reg_info: policy key name = [%s]\n", regkey->name));
rpcstr_pull(name, q_u->uni_type.buffer, sizeof(name), q_u->uni_type.uni_str_len*2, 0);
DEBUG(5,("reg_info: looking up value: [%s]\n", name));
ZERO_STRUCTP( ®vals );
regval_ctr_init( ®vals );
/* couple of hard coded registry values */
if ( strequal(name, "RefusePasswordChange") ) {
uint32 dwValue;
if ( (val = SMB_MALLOC_P(REGISTRY_VALUE)) == NULL ) {
DEBUG(0,("_reg_info: malloc() failed!\n"));
return NT_STATUS_NO_MEMORY;
}
if (!account_policy_get(AP_REFUSE_MACHINE_PW_CHANGE, &dwValue))
dwValue = 0;
regval_ctr_addvalue(®vals, "RefusePasswordChange",
REG_DWORD,
(const char*)&dwValue, sizeof(dwValue));
val = dup_registry_value(
regval_ctr_specific_value( ®vals, 0 ) );
status = NT_STATUS_OK;
goto out;
}
if ( strequal(name, REGSTR_PRODUCTTYPE) ) {
/* This makes the server look like a member server to clients */
/* which tells clients that we have our own local user and */
/* group databases and helps with ACL support. */
switch (lp_server_role()) {
case ROLE_DOMAIN_PDC:
case ROLE_DOMAIN_BDC:
value_ascii = REG_PT_LANMANNT;
break;
case ROLE_STANDALONE:
value_ascii = REG_PT_SERVERNT;
break;
case ROLE_DOMAIN_MEMBER:
value_ascii = REG_PT_WINNT;
break;
}
value_length = push_ucs2(value, value, value_ascii,
sizeof(value),
STR_TERMINATE|STR_NOALIGN);
regval_ctr_addvalue(®vals, REGSTR_PRODUCTTYPE, REG_SZ,
value, value_length);
val = dup_registry_value( regval_ctr_specific_value( ®vals, 0 ) );
status = NT_STATUS_OK;
goto out;
}
/* else fall back to actually looking up the value */
for ( i=0; fetch_reg_values_specific(regkey, &val, i); i++ )
{
DEBUG(10,("_reg_info: Testing value [%s]\n", val->valuename));
if ( StrCaseCmp( val->valuename, name ) == 0 ) {
DEBUG(10,("_reg_info: Found match for value [%s]\n", name));
status = NT_STATUS_OK;
break;
}
free_registry_value( val );
}
out:
new_init_reg_r_info(q_u->ptr_buf, r_u, val, status);
regval_ctr_destroy( ®vals );
free_registry_value( val );
DEBUG(5,("_reg_info: Exit\n"));
return status;
}
/*****************************************************************************
Implementation of REG_QUERY_KEY
****************************************************************************/
NTSTATUS _reg_query_key(pipes_struct *p, REG_Q_QUERY_KEY *q_u, REG_R_QUERY_KEY *r_u)
{
NTSTATUS status = NT_STATUS_OK;
REGISTRY_KEY *regkey = find_regkey_index_by_hnd( p, &q_u->pol );
DEBUG(5,("_reg_query_key: Enter\n"));
if ( !regkey )
return NT_STATUS_INVALID_HANDLE;
if ( !get_subkey_information( regkey, &r_u->num_subkeys, &r_u->max_subkeylen ) )
return NT_STATUS_ACCESS_DENIED;
if ( !get_value_information( regkey, &r_u->num_values, &r_u->max_valnamelen, &r_u->max_valbufsize ) )
return NT_STATUS_ACCESS_DENIED;
r_u->sec_desc = 0x00000078; /* size for key's sec_desc */
/* Win9x set this to 0x0 since it does not keep timestamps.
Doing the same here for simplicity --jerry */
ZERO_STRUCT(r_u->mod_time);
DEBUG(5,("_reg_query_key: Exit\n"));
return status;
}
/*****************************************************************************
Implementation of REG_UNKNOWN_1A
****************************************************************************/
NTSTATUS _reg_unknown_1a(pipes_struct *p, REG_Q_UNKNOWN_1A *q_u, REG_R_UNKNOWN_1A *r_u)
{
NTSTATUS status = NT_STATUS_OK;
REGISTRY_KEY *regkey = find_regkey_index_by_hnd( p, &q_u->pol );
DEBUG(5,("_reg_unknown_1a: Enter\n"));
if ( !regkey )
return NT_STATUS_INVALID_HANDLE;
r_u->unknown = 0x00000005; /* seems to be consistent...no idea what it means */
DEBUG(5,("_reg_unknown_1a: Exit\n"));
return status;
}
/*****************************************************************************
Implementation of REG_ENUM_KEY
****************************************************************************/
NTSTATUS _reg_enum_key(pipes_struct *p, REG_Q_ENUM_KEY *q_u, REG_R_ENUM_KEY *r_u)
{
NTSTATUS status = NT_STATUS_OK;
REGISTRY_KEY *regkey = find_regkey_index_by_hnd( p, &q_u->pol );
char *subkey = NULL;
DEBUG(5,("_reg_enum_key: Enter\n"));
if ( !regkey )
return NT_STATUS_INVALID_HANDLE;
DEBUG(8,("_reg_enum_key: enumerating key [%s]\n", regkey->name));
if ( !fetch_reg_keys_specific( regkey, &subkey, q_u->key_index ) )
{
status = NT_STATUS_NO_MORE_ENTRIES;
goto done;
}
DEBUG(10,("_reg_enum_key: retrieved subkey named [%s]\n", subkey));
/* subkey has the string name now */
init_reg_r_enum_key( r_u, subkey, q_u->unknown_1, q_u->unknown_2 );
DEBUG(5,("_reg_enum_key: Exit\n"));
done:
SAFE_FREE( subkey );
return status;
}
/*****************************************************************************
Implementation of REG_ENUM_VALUE
****************************************************************************/
NTSTATUS _reg_enum_value(pipes_struct *p, REG_Q_ENUM_VALUE *q_u, REG_R_ENUM_VALUE *r_u)
{
NTSTATUS status = NT_STATUS_OK;
REGISTRY_KEY *regkey = find_regkey_index_by_hnd( p, &q_u->pol );
REGISTRY_VALUE *val;
DEBUG(5,("_reg_enum_value: Enter\n"));
if ( !regkey )
return NT_STATUS_INVALID_HANDLE;
DEBUG(8,("_reg_enum_key: enumerating values for key [%s]\n", regkey->name));
if ( !fetch_reg_values_specific( regkey, &val, q_u->val_index ) )
{
status = NT_STATUS_NO_MORE_ENTRIES;
goto done;
}
DEBUG(10,("_reg_enum_value: retrieved value named [%s]\n", val->valuename));
/* subkey has the string name now */
init_reg_r_enum_val( r_u, val );
DEBUG(5,("_reg_enum_value: Exit\n"));
done:
free_registry_value( val );
return status;
}
/*******************************************************************
reg_shutdwon
********************************************************************/
#define SHUTDOWN_R_STRING "-r"
#define SHUTDOWN_F_STRING "-f"
NTSTATUS _reg_shutdown(pipes_struct *p, REG_Q_SHUTDOWN *q_u, REG_R_SHUTDOWN *r_u)
{
NTSTATUS status = NT_STATUS_OK;
pstring shutdown_script;
UNISTR2 unimsg = q_u->uni_msg;
pstring message;
pstring chkmsg;
fstring timeout;
fstring r;
fstring f;
/* message */
rpcstr_pull (message, unimsg.buffer, sizeof(message), unimsg.uni_str_len*2,0);
/* security check */
alpha_strcpy (chkmsg, message, NULL, sizeof(message));
/* timeout */
fstr_sprintf(timeout, "%d", q_u->timeout);
/* reboot */
fstr_sprintf(r, (q_u->reboot) ? SHUTDOWN_R_STRING : "");
/* force */
fstr_sprintf(f, (q_u->force) ? SHUTDOWN_F_STRING : "");
pstrcpy(shutdown_script, lp_shutdown_script());
if(*shutdown_script) {
int shutdown_ret;
all_string_sub(shutdown_script, "%m", chkmsg, sizeof(shutdown_script));
all_string_sub(shutdown_script, "%t", timeout, sizeof(shutdown_script));
all_string_sub(shutdown_script, "%r", r, sizeof(shutdown_script));
all_string_sub(shutdown_script, "%f", f, sizeof(shutdown_script));
shutdown_ret = smbrun(shutdown_script,NULL);
DEBUG(3,("_reg_shutdown: Running the command `%s' gave %d\n",shutdown_script,shutdown_ret));
}
return status;
}
/*******************************************************************
reg_abort_shutdwon
********************************************************************/
NTSTATUS _reg_abort_shutdown(pipes_struct *p, REG_Q_ABORT_SHUTDOWN *q_u, REG_R_ABORT_SHUTDOWN *r_u)
{
NTSTATUS status = NT_STATUS_OK;
pstring abort_shutdown_script;
pstrcpy(abort_shutdown_script, lp_abort_shutdown_script());
if(*abort_shutdown_script) {
int abort_shutdown_ret;
abort_shutdown_ret = smbrun(abort_shutdown_script,NULL);
DEBUG(3,("_reg_abort_shutdown: Running the command `%s' gave %d\n",abort_shutdown_script,abort_shutdown_ret));
}
return status;
}
/*******************************************************************
REG_SAVE_KEY (0x14)
********************************************************************/
NTSTATUS _reg_save_key(pipes_struct *p, REG_Q_SAVE_KEY *q_u, REG_R_SAVE_KEY *r_u)
{
REGISTRY_KEY *regkey = find_regkey_index_by_hnd( p, &q_u->pol );
DEBUG(5,("_reg_save_key: Enter\n"));
/*
* basically this is a no op function which just gverifies
* that the client gave us a valid registry key handle
*/
if ( !regkey )
return NT_STATUS_INVALID_HANDLE;
DEBUG(8,("_reg_save_key: berifying backup of key [%s]\n", regkey->name));
return NT_STATUS_OK;
}
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