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wine/server/registry.c
Alexandre Julliard b00fb174f6 server: New scheme for cleaning up objects on server exit. 
Objects stored in static variables can now be marked when they are
created and are automatically cleaned up on exit. This avoids having
to export a bunch of close_* functions.
2006-03-22 20:32:04 +01:00

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/*
* Server-side registry management
*
* Copyright (C) 1999 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* To do:
* - symbolic links
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "object.h"
#include "file.h"
#include "handle.h"
#include "request.h"
#include "unicode.h"
#include "security.h"
#include "winternl.h"
#include "wine/library.h"
struct notify
{
struct list entry; /* entry in list of notifications */
struct event *event; /* event to set when changing this key */
int subtree; /* true if subtree notification */
unsigned int filter; /* which events to notify on */
obj_handle_t hkey; /* hkey associated with this notification */
struct process *process; /* process in which the hkey is valid */
};
/* a registry key */
struct key
{
struct object obj; /* object header */
WCHAR *name; /* key name */
WCHAR *class; /* key class */
unsigned short namelen; /* length of key name */
unsigned short classlen; /* length of class name */
struct key *parent; /* parent key */
int last_subkey; /* last in use subkey */
int nb_subkeys; /* count of allocated subkeys */
struct key **subkeys; /* subkeys array */
int last_value; /* last in use value */
int nb_values; /* count of allocated values in array */
struct key_value *values; /* values array */
unsigned int flags; /* flags */
time_t modif; /* last modification time */
struct list notify_list; /* list of notifications */
};
/* key flags */
#define KEY_VOLATILE 0x0001 /* key is volatile (not saved to disk) */
#define KEY_DELETED 0x0002 /* key has been deleted */
#define KEY_DIRTY 0x0004 /* key has been modified */
/* a key value */
struct key_value
{
WCHAR *name; /* value name */
unsigned short namelen; /* length of value name */
unsigned short type; /* value type */
size_t len; /* value data length in bytes */
void *data; /* pointer to value data */
};
#define MIN_SUBKEYS 8 /* min. number of allocated subkeys per key */
#define MIN_VALUES 8 /* min. number of allocated values per key */
#define MAX_NAME_LEN MAX_PATH /* max. length of a key name */
#define MAX_VALUE_LEN MAX_PATH /* max. length of a value name */
/* the root of the registry tree */
static struct key *root_key;
static const int save_period = 30000; /* delay between periodic saves (in ms) */
static struct timeout_user *save_timeout_user; /* saving timer */
static void set_periodic_save_timer(void);
/* information about where to save a registry branch */
struct save_branch_info
{
struct key *key;
char *path;
};
#define MAX_SAVE_BRANCH_INFO 3
static int save_branch_count;
static struct save_branch_info save_branch_info[MAX_SAVE_BRANCH_INFO];
/* information about a file being loaded */
struct file_load_info
{
const char *filename; /* input file name */
FILE *file; /* input file */
char *buffer; /* line buffer */
int len; /* buffer length */
int line; /* current input line */
WCHAR *tmp; /* temp buffer to use while parsing input */
size_t tmplen; /* length of temp buffer */
};
static void key_dump( struct object *obj, int verbose );
static unsigned int key_map_access( struct object *obj, unsigned int access );
static int key_close_handle( struct object *obj, struct process *process, obj_handle_t handle );
static void key_destroy( struct object *obj );
static const struct object_ops key_ops =
{
sizeof(struct key), /* size */
key_dump, /* dump */
no_add_queue, /* add_queue */
NULL, /* remove_queue */
NULL, /* signaled */
NULL, /* satisfied */
no_signal, /* signal */
no_get_fd, /* get_fd */
key_map_access, /* map_access */
no_lookup_name, /* lookup_name */
key_close_handle, /* close_handle */
key_destroy /* destroy */
};
/*
* The registry text file format v2 used by this code is similar to the one
* used by REGEDIT import/export functionality, with the following differences:
* - strings and key names can contain \x escapes for Unicode
* - key names use escapes too in order to support Unicode
* - the modification time optionally follows the key name
* - REG_EXPAND_SZ and REG_MULTI_SZ are saved as strings instead of hex
*/
static inline char to_hex( char ch )
{
if (isdigit(ch)) return ch - '0';
return tolower(ch) - 'a' + 10;
}
/* dump the full path of a key */
static void dump_path( const struct key *key, const struct key *base, FILE *f )
{
if (key->parent && key->parent != base)
{
dump_path( key->parent, base, f );
fprintf( f, "\\\\" );
}
dump_strW( key->name, key->namelen / sizeof(WCHAR), f, "[]" );
}
/* dump a value to a text file */
static void dump_value( const struct key_value *value, FILE *f )
{
unsigned int i;
int count;
if (value->namelen)
{
fputc( '\"', f );
count = 1 + dump_strW( value->name, value->namelen / sizeof(WCHAR), f, "\"\"" );
count += fprintf( f, "\"=" );
}
else count = fprintf( f, "@=" );
switch(value->type)
{
case REG_SZ:
case REG_EXPAND_SZ:
case REG_MULTI_SZ:
if (value->type != REG_SZ) fprintf( f, "str(%d):", value->type );
fputc( '\"', f );
if (value->data) dump_strW( (WCHAR *)value->data, value->len / sizeof(WCHAR), f, "\"\"" );
fputc( '\"', f );
break;
case REG_DWORD:
if (value->len == sizeof(DWORD))
{
DWORD dw;
memcpy( &dw, value->data, sizeof(DWORD) );
fprintf( f, "dword:%08lx", dw );
break;
}
/* else fall through */
default:
if (value->type == REG_BINARY) count += fprintf( f, "hex:" );
else count += fprintf( f, "hex(%x):", value->type );
for (i = 0; i < value->len; i++)
{
count += fprintf( f, "%02x", *((unsigned char *)value->data + i) );
if (i < value->len-1)
{
fputc( ',', f );
if (++count > 76)
{
fprintf( f, "\\\n " );
count = 2;
}
}
}
break;
}
fputc( '\n', f );
}
/* save a registry and all its subkeys to a text file */
static void save_subkeys( const struct key *key, const struct key *base, FILE *f )
{
int i;
if (key->flags & KEY_VOLATILE) return;
/* save key if it has either some values or no subkeys */
/* keys with no values but subkeys are saved implicitly by saving the subkeys */
if ((key->last_value >= 0) || (key->last_subkey == -1))
{
fprintf( f, "\n[" );
if (key != base) dump_path( key, base, f );
fprintf( f, "] %ld\n", (long)key->modif );
for (i = 0; i <= key->last_value; i++) dump_value( &key->values[i], f );
}
for (i = 0; i <= key->last_subkey; i++) save_subkeys( key->subkeys[i], base, f );
}
static void dump_operation( const struct key *key, const struct key_value *value, const char *op )
{
fprintf( stderr, "%s key ", op );
if (key) dump_path( key, NULL, stderr );
else fprintf( stderr, "ERROR" );
if (value)
{
fprintf( stderr, " value ");
dump_value( value, stderr );
}
else fprintf( stderr, "\n" );
}
static void key_dump( struct object *obj, int verbose )
{
struct key *key = (struct key *)obj;
assert( obj->ops == &key_ops );
fprintf( stderr, "Key flags=%x ", key->flags );
dump_path( key, NULL, stderr );
fprintf( stderr, "\n" );
}
/* notify waiter and maybe delete the notification */
static void do_notification( struct key *key, struct notify *notify, int del )
{
if (notify->event)
{
set_event( notify->event );
release_object( notify->event );
notify->event = NULL;
}
if (del)
{
list_remove( &notify->entry );
free( notify );
}
}
static inline struct notify *find_notify( struct key *key, struct process *process, obj_handle_t hkey )
{
struct notify *notify;
LIST_FOR_EACH_ENTRY( notify, &key->notify_list, struct notify, entry )
{
if (notify->process == process && notify->hkey == hkey) return notify;
}
return NULL;
}
static unsigned int key_map_access( struct object *obj, unsigned int access )
{
if (access & GENERIC_READ) access |= KEY_READ;
if (access & GENERIC_WRITE) access |= KEY_WRITE;
if (access & GENERIC_EXECUTE) access |= KEY_EXECUTE;
if (access & GENERIC_ALL) access |= KEY_ALL_ACCESS;
return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
}
/* close the notification associated with a handle */
static int key_close_handle( struct object *obj, struct process *process, obj_handle_t handle )
{
struct key * key = (struct key *) obj;
struct notify *notify = find_notify( key, process, handle );
if (notify) do_notification( key, notify, 1 );
return 1; /* ok to close */
}
static void key_destroy( struct object *obj )
{
int i;
struct list *ptr;
struct key *key = (struct key *)obj;
assert( obj->ops == &key_ops );
if (key->name) free( key->name );
if (key->class) free( key->class );
for (i = 0; i <= key->last_value; i++)
{
if (key->values[i].name) free( key->values[i].name );
if (key->values[i].data) free( key->values[i].data );
}
if (key->values) free( key->values );
for (i = 0; i <= key->last_subkey; i++)
{
key->subkeys[i]->parent = NULL;
release_object( key->subkeys[i] );
}
if (key->subkeys) free( key->subkeys );
/* unconditionally notify everything waiting on this key */
while ((ptr = list_head( &key->notify_list )))
{
struct notify *notify = LIST_ENTRY( ptr, struct notify, entry );
do_notification( key, notify, 1 );
}
}
/* get the request vararg as registry path */
inline static void get_req_path( struct unicode_str *str, int skip_root )
{
static const WCHAR root_name[] = { '\\','R','e','g','i','s','t','r','y','\\' };
str->str = get_req_data();
str->len = (get_req_data_size() / sizeof(WCHAR)) * sizeof(WCHAR);
if (skip_root && str->len >= sizeof(root_name) &&
!memicmpW( str->str, root_name, sizeof(root_name)/sizeof(WCHAR) ))
{
str->str += sizeof(root_name)/sizeof(WCHAR);
str->len -= sizeof(root_name);
}
}
/* return the next token in a given path */
/* token->str must point inside the path, or be NULL for the first call */
static struct unicode_str *get_path_token( const struct unicode_str *path, struct unicode_str *token )
{
size_t i = 0, len = path->len / sizeof(WCHAR);
if (!token->str) /* first time */
{
/* path cannot start with a backslash */
if (len && path->str[0] == '\\')
{
set_error( STATUS_OBJECT_PATH_INVALID );
return NULL;
}
}
else
{
i = token->str - path->str;
i += token->len / sizeof(WCHAR);
while (i < len && path->str[i] == '\\') i++;
}
token->str = path->str + i;
while (i < len && path->str[i] != '\\') i++;
token->len = (path->str + i - token->str) * sizeof(WCHAR);
return token;
}
/* allocate a key object */
static struct key *alloc_key( const struct unicode_str *name, time_t modif )
{
struct key *key;
if ((key = alloc_object( &key_ops )))
{
key->name = NULL;
key->class = NULL;
key->namelen = name->len;
key->classlen = 0;
key->flags = 0;
key->last_subkey = -1;
key->nb_subkeys = 0;
key->subkeys = NULL;
key->nb_values = 0;
key->last_value = -1;
key->values = NULL;
key->modif = modif;
key->parent = NULL;
list_init( &key->notify_list );
if (name->len && !(key->name = memdup( name->str, name->len )))
{
release_object( key );
key = NULL;
}
}
return key;
}
/* mark a key and all its parents as dirty (modified) */
static void make_dirty( struct key *key )
{
while (key)
{
if (key->flags & (KEY_DIRTY|KEY_VOLATILE)) return; /* nothing to do */
key->flags |= KEY_DIRTY;
key = key->parent;
}
}
/* mark a key and all its subkeys as clean (not modified) */
static void make_clean( struct key *key )
{
int i;
if (key->flags & KEY_VOLATILE) return;
if (!(key->flags & KEY_DIRTY)) return;
key->flags &= ~KEY_DIRTY;
for (i = 0; i <= key->last_subkey; i++) make_clean( key->subkeys[i] );
}
/* go through all the notifications and send them if necessary */
static void check_notify( struct key *key, unsigned int change, int not_subtree )
{
struct list *ptr, *next;
LIST_FOR_EACH_SAFE( ptr, next, &key->notify_list )
{
struct notify *n = LIST_ENTRY( ptr, struct notify, entry );
if ( ( not_subtree || n->subtree ) && ( change & n->filter ) )
do_notification( key, n, 0 );
}
}
/* update key modification time */
static void touch_key( struct key *key, unsigned int change )
{
struct key *k;
key->modif = time(NULL);
make_dirty( key );
/* do notifications */
check_notify( key, change, 1 );
for ( k = key->parent; k; k = k->parent )
check_notify( k, change & ~REG_NOTIFY_CHANGE_LAST_SET, 0 );
}
/* try to grow the array of subkeys; return 1 if OK, 0 on error */
static int grow_subkeys( struct key *key )
{
struct key **new_subkeys;
int nb_subkeys;
if (key->nb_subkeys)
{
nb_subkeys = key->nb_subkeys + (key->nb_subkeys / 2); /* grow by 50% */
if (!(new_subkeys = realloc( key->subkeys, nb_subkeys * sizeof(*new_subkeys) )))
{
set_error( STATUS_NO_MEMORY );
return 0;
}
}
else
{
nb_subkeys = MIN_VALUES;
if (!(new_subkeys = mem_alloc( nb_subkeys * sizeof(*new_subkeys) ))) return 0;
}
key->subkeys = new_subkeys;
key->nb_subkeys = nb_subkeys;
return 1;
}
/* allocate a subkey for a given key, and return its index */
static struct key *alloc_subkey( struct key *parent, const struct unicode_str *name,
int index, time_t modif )
{
struct key *key;
int i;
if (name->len > MAX_NAME_LEN * sizeof(WCHAR))
{
set_error( STATUS_NAME_TOO_LONG );
return NULL;
}
if (parent->last_subkey + 1 == parent->nb_subkeys)
{
/* need to grow the array */
if (!grow_subkeys( parent )) return NULL;
}
if ((key = alloc_key( name, modif )) != NULL)
{
key->parent = parent;
for (i = ++parent->last_subkey; i > index; i--)
parent->subkeys[i] = parent->subkeys[i-1];
parent->subkeys[index] = key;
}
return key;
}
/* free a subkey of a given key */
static void free_subkey( struct key *parent, int index )
{
struct key *key;
int i, nb_subkeys;
assert( index >= 0 );
assert( index <= parent->last_subkey );
key = parent->subkeys[index];
for (i = index; i < parent->last_subkey; i++) parent->subkeys[i] = parent->subkeys[i + 1];
parent->last_subkey--;
key->flags |= KEY_DELETED;
key->parent = NULL;
release_object( key );
/* try to shrink the array */
nb_subkeys = parent->nb_subkeys;
if (nb_subkeys > MIN_SUBKEYS && parent->last_subkey < nb_subkeys / 2)
{
struct key **new_subkeys;
nb_subkeys -= nb_subkeys / 3; /* shrink by 33% */
if (nb_subkeys < MIN_SUBKEYS) nb_subkeys = MIN_SUBKEYS;
if (!(new_subkeys = realloc( parent->subkeys, nb_subkeys * sizeof(*new_subkeys) ))) return;
parent->subkeys = new_subkeys;
parent->nb_subkeys = nb_subkeys;
}
}
/* find the named child of a given key and return its index */
static struct key *find_subkey( const struct key *key, const struct unicode_str *name, int *index )
{
int i, min, max, res;
size_t len;
min = 0;
max = key->last_subkey;
while (min <= max)
{
i = (min + max) / 2;
len = min( key->subkeys[i]->namelen, name->len );
res = memicmpW( key->subkeys[i]->name, name->str, len / sizeof(WCHAR) );
if (!res) res = key->subkeys[i]->namelen - name->len;
if (!res)
{
*index = i;
return key->subkeys[i];
}
if (res > 0) max = i - 1;
else min = i + 1;
}
*index = min; /* this is where we should insert it */
return NULL;
}
/* open a subkey */
static struct key *open_key( struct key *key, const struct unicode_str *name )
{
int index;
struct unicode_str token;
token.str = NULL;
if (!get_path_token( name, &token )) return NULL;
while (token.len)
{
if (!(key = find_subkey( key, &token, &index )))
{
set_error( STATUS_OBJECT_NAME_NOT_FOUND );
break;
}
get_path_token( name, &token );
}
if (debug_level > 1) dump_operation( key, NULL, "Open" );
if (key) grab_object( key );
return key;
}
/* create a subkey */
static struct key *create_key( struct key *key, const struct unicode_str *name,
const struct unicode_str *class, int flags, time_t modif, int *created )
{
struct key *base;
int index;
struct unicode_str token;
if (key->flags & KEY_DELETED) /* we cannot create a subkey under a deleted key */
{
set_error( STATUS_KEY_DELETED );
return NULL;
}
if (!(flags & KEY_VOLATILE) && (key->flags & KEY_VOLATILE))
{
set_error( STATUS_CHILD_MUST_BE_VOLATILE );
return NULL;
}
if (!modif) modif = time(NULL);
token.str = NULL;
if (!get_path_token( name, &token )) return NULL;
*created = 0;
while (token.len)
{
struct key *subkey;
if (!(subkey = find_subkey( key, &token, &index ))) break;
key = subkey;
get_path_token( name, &token );
}
/* create the remaining part */
if (!token.len) goto done;
*created = 1;
if (flags & KEY_DIRTY) make_dirty( key );
if (!(key = alloc_subkey( key, &token, index, modif ))) return NULL;
base = key;
for (;;)
{
key->flags |= flags;
get_path_token( name, &token );
if (!token.len) break;
/* we know the index is always 0 in a new key */
if (!(key = alloc_subkey( key, &token, 0, modif )))
{
free_subkey( base, index );
return NULL;
}
}
done:
if (debug_level > 1) dump_operation( key, NULL, "Create" );
if (class && class->len)
{
key->classlen = class->len;
if (!(key->class = memdup( class->str, key->classlen ))) key->classlen = 0;
}
grab_object( key );
return key;
}
/* query information about a key or a subkey */
static void enum_key( const struct key *key, int index, int info_class,
struct enum_key_reply *reply )
{
int i;
size_t len, namelen, classlen;
int max_subkey = 0, max_class = 0;
int max_value = 0, max_data = 0;
char *data;
if (index != -1) /* -1 means use the specified key directly */
{
if ((index < 0) || (index > key->last_subkey))
{
set_error( STATUS_NO_MORE_ENTRIES );
return;
}
key = key->subkeys[index];
}
namelen = key->namelen;
classlen = key->classlen;
switch(info_class)
{
case KeyBasicInformation:
classlen = 0; /* only return the name */
/* fall through */
case KeyNodeInformation:
reply->max_subkey = 0;
reply->max_class = 0;
reply->max_value = 0;
reply->max_data = 0;
break;
case KeyFullInformation:
for (i = 0; i <= key->last_subkey; i++)
{
struct key *subkey = key->subkeys[i];
len = subkey->namelen / sizeof(WCHAR);
if (len > max_subkey) max_subkey = len;
len = subkey->classlen / sizeof(WCHAR);
if (len > max_class) max_class = len;
}
for (i = 0; i <= key->last_value; i++)
{
len = key->values[i].namelen / sizeof(WCHAR);
if (len > max_value) max_value = len;
len = key->values[i].len;
if (len > max_data) max_data = len;
}
reply->max_subkey = max_subkey;
reply->max_class = max_class;
reply->max_value = max_value;
reply->max_data = max_data;
namelen = 0; /* only return the class */
break;
default:
set_error( STATUS_INVALID_PARAMETER );
return;
}
reply->subkeys = key->last_subkey + 1;
reply->values = key->last_value + 1;
reply->modif = key->modif;
reply->total = namelen + classlen;
len = min( reply->total, get_reply_max_size() );
if (len && (data = set_reply_data_size( len )))
{
if (len > namelen)
{
reply->namelen = namelen;
memcpy( data, key->name, namelen );
memcpy( data + namelen, key->class, len - namelen );
}
else
{
reply->namelen = len;
memcpy( data, key->name, len );
}
}
if (debug_level > 1) dump_operation( key, NULL, "Enum" );
}
/* delete a key and its values */
static int delete_key( struct key *key, int recurse )
{
int index;
struct key *parent;
/* must find parent and index */
if (key == root_key)
{
set_error( STATUS_ACCESS_DENIED );
return -1;
}
if (!(parent = key->parent) || (key->flags & KEY_DELETED))
{
set_error( STATUS_KEY_DELETED );
return -1;
}
while (recurse && (key->last_subkey>=0))
if (0 > delete_key(key->subkeys[key->last_subkey], 1))
return -1;
for (index = 0; index <= parent->last_subkey; index++)
if (parent->subkeys[index] == key) break;
assert( index <= parent->last_subkey );
/* we can only delete a key that has no subkeys */
if (key->last_subkey >= 0)
{
set_error( STATUS_ACCESS_DENIED );
return -1;
}
if (debug_level > 1) dump_operation( key, NULL, "Delete" );
free_subkey( parent, index );
touch_key( parent, REG_NOTIFY_CHANGE_NAME );
return 0;
}
/* try to grow the array of values; return 1 if OK, 0 on error */
static int grow_values( struct key *key )
{
struct key_value *new_val;
int nb_values;
if (key->nb_values)
{
nb_values = key->nb_values + (key->nb_values / 2); /* grow by 50% */
if (!(new_val = realloc( key->values, nb_values * sizeof(*new_val) )))
{
set_error( STATUS_NO_MEMORY );
return 0;
}
}
else
{
nb_values = MIN_VALUES;
if (!(new_val = mem_alloc( nb_values * sizeof(*new_val) ))) return 0;
}
key->values = new_val;
key->nb_values = nb_values;
return 1;
}
/* find the named value of a given key and return its index in the array */
static struct key_value *find_value( const struct key *key, const struct unicode_str *name, int *index )
{
int i, min, max, res;
size_t len;
min = 0;
max = key->last_value;
while (min <= max)
{
i = (min + max) / 2;
len = min( key->values[i].namelen, name->len );
res = memicmpW( key->values[i].name, name->str, len / sizeof(WCHAR) );
if (!res) res = key->values[i].namelen - name->len;
if (!res)
{
*index = i;
return &key->values[i];
}
if (res > 0) max = i - 1;
else min = i + 1;
}
*index = min; /* this is where we should insert it */
return NULL;
}
/* insert a new value; the index must have been returned by find_value */
static struct key_value *insert_value( struct key *key, const struct unicode_str *name, int index )
{
struct key_value *value;
WCHAR *new_name = NULL;
int i;
if (name->len > MAX_VALUE_LEN * sizeof(WCHAR))
{
set_error( STATUS_NAME_TOO_LONG );
return NULL;
}
if (key->last_value + 1 == key->nb_values)
{
if (!grow_values( key )) return NULL;
}
if (name->len && !(new_name = memdup( name->str, name->len ))) return NULL;
for (i = ++key->last_value; i > index; i--) key->values[i] = key->values[i - 1];
value = &key->values[index];
value->name = new_name;
value->namelen = name->len;
value->len = 0;
value->data = NULL;
return value;
}
/* set a key value */
static void set_value( struct key *key, const struct unicode_str *name,
int type, const void *data, size_t len )
{
struct key_value *value;
void *ptr = NULL;
int index;
if ((value = find_value( key, name, &index )))
{
/* check if the new value is identical to the existing one */
if (value->type == type && value->len == len &&
value->data && !memcmp( value->data, data, len ))
{
if (debug_level > 1) dump_operation( key, value, "Skip setting" );
return;
}
}
if (len && !(ptr = memdup( data, len ))) return;
if (!value)
{
if (!(value = insert_value( key, name, index )))
{
if (ptr) free( ptr );
return;
}
}
else if (value->data) free( value->data ); /* already existing, free previous data */
value->type = type;
value->len = len;
value->data = ptr;
touch_key( key, REG_NOTIFY_CHANGE_LAST_SET );
if (debug_level > 1) dump_operation( key, value, "Set" );
}
/* get a key value */
static void get_value( struct key *key, const struct unicode_str *name, int *type, size_t *len )
{
struct key_value *value;
int index;
if ((value = find_value( key, name, &index )))
{
*type = value->type;
*len = value->len;
if (value->data) set_reply_data( value->data, min( value->len, get_reply_max_size() ));
if (debug_level > 1) dump_operation( key, value, "Get" );
}
else
{
*type = -1;
set_error( STATUS_OBJECT_NAME_NOT_FOUND );
}
}
/* enumerate a key value */
static void enum_value( struct key *key, int i, int info_class, struct enum_key_value_reply *reply )
{
struct key_value *value;
if (i < 0 || i > key->last_value) set_error( STATUS_NO_MORE_ENTRIES );
else
{
void *data;
size_t namelen, maxlen;
value = &key->values[i];
reply->type = value->type;
namelen = value->namelen;
switch(info_class)
{
case KeyValueBasicInformation:
reply->total = namelen;
break;
case KeyValueFullInformation:
reply->total = namelen + value->len;
break;
case KeyValuePartialInformation:
reply->total = value->len;
namelen = 0;
break;
default:
set_error( STATUS_INVALID_PARAMETER );
return;
}
maxlen = min( reply->total, get_reply_max_size() );
if (maxlen && ((data = set_reply_data_size( maxlen ))))
{
if (maxlen > namelen)
{
reply->namelen = namelen;
memcpy( data, value->name, namelen );
memcpy( (char *)data + namelen, value->data, maxlen - namelen );
}
else
{
reply->namelen = maxlen;
memcpy( data, value->name, maxlen );
}
}
if (debug_level > 1) dump_operation( key, value, "Enum" );
}
}
/* delete a value */
static void delete_value( struct key *key, const struct unicode_str *name )
{
struct key_value *value;
int i, index, nb_values;
if (!(value = find_value( key, name, &index )))
{
set_error( STATUS_OBJECT_NAME_NOT_FOUND );
return;
}
if (debug_level > 1) dump_operation( key, value, "Delete" );
if (value->name) free( value->name );
if (value->data) free( value->data );
for (i = index; i < key->last_value; i++) key->values[i] = key->values[i + 1];
key->last_value--;
touch_key( key, REG_NOTIFY_CHANGE_LAST_SET );
/* try to shrink the array */
nb_values = key->nb_values;
if (nb_values > MIN_VALUES && key->last_value < nb_values / 2)
{
struct key_value *new_val;
nb_values -= nb_values / 3; /* shrink by 33% */
if (nb_values < MIN_VALUES) nb_values = MIN_VALUES;
if (!(new_val = realloc( key->values, nb_values * sizeof(*new_val) ))) return;
key->values = new_val;
key->nb_values = nb_values;
}
}
/* get the registry key corresponding to an hkey handle */
static struct key *get_hkey_obj( obj_handle_t hkey, unsigned int access )
{
if (!hkey) return (struct key *)grab_object( root_key );
return (struct key *)get_handle_obj( current->process, hkey, access, &key_ops );
}
/* read a line from the input file */
static int read_next_line( struct file_load_info *info )
{
char *newbuf;
int newlen, pos = 0;
info->line++;
for (;;)
{
if (!fgets( info->buffer + pos, info->len - pos, info->file ))
return (pos != 0); /* EOF */
pos = strlen(info->buffer);
if (info->buffer[pos-1] == '\n')
{
/* got a full line */
info->buffer[--pos] = 0;
if (pos > 0 && info->buffer[pos-1] == '\r') info->buffer[pos-1] = 0;
return 1;
}
if (pos < info->len - 1) return 1; /* EOF but something was read */
/* need to enlarge the buffer */
newlen = info->len + info->len / 2;
if (!(newbuf = realloc( info->buffer, newlen )))
{
set_error( STATUS_NO_MEMORY );
return -1;
}
info->buffer = newbuf;
info->len = newlen;
}
}
/* make sure the temp buffer holds enough space */
static int get_file_tmp_space( struct file_load_info *info, size_t size )
{
WCHAR *tmp;
if (info->tmplen >= size) return 1;
if (!(tmp = realloc( info->tmp, size )))
{
set_error( STATUS_NO_MEMORY );
return 0;
}
info->tmp = tmp;
info->tmplen = size;
return 1;
}
/* report an error while loading an input file */
static void file_read_error( const char *err, struct file_load_info *info )
{
if (info->filename)
fprintf( stderr, "%s:%d: %s '%s'\n", info->filename, info->line, err, info->buffer );
else
fprintf( stderr, "<fd>:%d: %s '%s'\n", info->line, err, info->buffer );
}
/* parse an escaped string back into Unicode */
/* return the number of chars read from the input, or -1 on output overflow */
static int parse_strW( WCHAR *dest, size_t *len, const char *src, char endchar )
{
size_t count = sizeof(WCHAR); /* for terminating null */
const char *p = src;
while (*p && *p != endchar)
{
if (*p != '\\') *dest = (WCHAR)*p++;
else
{
p++;
switch(*p)
{
case 'a': *dest = '\a'; p++; break;
case 'b': *dest = '\b'; p++; break;
case 'e': *dest = '\e'; p++; break;
case 'f': *dest = '\f'; p++; break;
case 'n': *dest = '\n'; p++; break;
case 'r': *dest = '\r'; p++; break;
case 't': *dest = '\t'; p++; break;
case 'v': *dest = '\v'; p++; break;
case 'x': /* hex escape */
p++;
if (!isxdigit(*p)) *dest = 'x';
else
{
*dest = to_hex(*p++);
if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++);
if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++);
if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++);
}
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7': /* octal escape */
*dest = *p++ - '0';
if (*p >= '0' && *p <= '7') *dest = (*dest * 8) + (*p++ - '0');
if (*p >= '0' && *p <= '7') *dest = (*dest * 8) + (*p++ - '0');
break;
default:
*dest = (WCHAR)*p++;
break;
}
}
if ((count += sizeof(WCHAR)) > *len) return -1; /* dest buffer overflow */
dest++;
}
*dest = 0;
if (!*p) return -1; /* delimiter not found */
*len = count;
return p + 1 - src;
}
/* convert a data type tag to a value type */
static int get_data_type( const char *buffer, int *type, int *parse_type )
{
struct data_type { const char *tag; int len; int type; int parse_type; };
static const struct data_type data_types[] =
{ /* actual type */ /* type to assume for parsing */
{ "\"", 1, REG_SZ, REG_SZ },
{ "str:\"", 5, REG_SZ, REG_SZ },
{ "str(2):\"", 8, REG_EXPAND_SZ, REG_SZ },
{ "str(7):\"", 8, REG_MULTI_SZ, REG_SZ },
{ "hex:", 4, REG_BINARY, REG_BINARY },
{ "dword:", 6, REG_DWORD, REG_DWORD },
{ "hex(", 4, -1, REG_BINARY },
{ NULL, 0, 0, 0 }
};
const struct data_type *ptr;
char *end;
for (ptr = data_types; ptr->tag; ptr++)
{
if (memcmp( ptr->tag, buffer, ptr->len )) continue;
*parse_type = ptr->parse_type;
if ((*type = ptr->type) != -1) return ptr->len;
/* "hex(xx):" is special */
*type = (int)strtoul( buffer + 4, &end, 16 );
if ((end <= buffer) || memcmp( end, "):", 2 )) return 0;
return end + 2 - buffer;
}
return 0;
}
/* load and create a key from the input file */
static struct key *load_key( struct key *base, const char *buffer, int flags,
int prefix_len, struct file_load_info *info,
int default_modif )
{
WCHAR *p;
struct unicode_str name;
int res, modif;
size_t len = strlen(buffer) * sizeof(WCHAR);
if (!get_file_tmp_space( info, len )) return NULL;
if ((res = parse_strW( info->tmp, &len, buffer, ']' )) == -1)
{
file_read_error( "Malformed key", info );
return NULL;
}
if (sscanf( buffer + res, " %d", &modif ) != 1) modif = default_modif;
p = info->tmp;
while (prefix_len && *p) { if (*p++ == '\\') prefix_len--; }
if (!*p)
{
if (prefix_len > 1)
{
file_read_error( "Malformed key", info );
return NULL;
}
/* empty key name, return base key */
return (struct key *)grab_object( base );
}
name.str = p;
name.len = len - (p - info->tmp + 1) * sizeof(WCHAR);
return create_key( base, &name, NULL, flags, modif, &res );
}
/* parse a comma-separated list of hex digits */
static int parse_hex( unsigned char *dest, size_t *len, const char *buffer )
{
const char *p = buffer;
size_t count = 0;
while (isxdigit(*p))
{
int val;
char buf[3];
memcpy( buf, p, 2 );
buf[2] = 0;
sscanf( buf, "%x", &val );
if (count++ >= *len) return -1; /* dest buffer overflow */
*dest++ = (unsigned char )val;
p += 2;
if (*p == ',') p++;
}
*len = count;
return p - buffer;
}
/* parse a value name and create the corresponding value */
static struct key_value *parse_value_name( struct key *key, const char *buffer, size_t *len,
struct file_load_info *info )
{
struct key_value *value;
struct unicode_str name;
int index;
size_t maxlen = strlen(buffer) * sizeof(WCHAR);
if (!get_file_tmp_space( info, maxlen )) return NULL;
name.str = info->tmp;
if (buffer[0] == '@')
{
name.len = 0;
*len = 1;
}
else
{
if ((*len = parse_strW( info->tmp, &maxlen, buffer + 1, '\"' )) == -1) goto error;
name.len = maxlen - sizeof(WCHAR);
(*len)++; /* for initial quote */
}
while (isspace(buffer[*len])) (*len)++;
if (buffer[*len] != '=') goto error;
(*len)++;
while (isspace(buffer[*len])) (*len)++;
if (!(value = find_value( key, &name, &index ))) value = insert_value( key, &name, index );
return value;
error:
file_read_error( "Malformed value name", info );
return NULL;
}
/* load a value from the input file */
static int load_value( struct key *key, const char *buffer, struct file_load_info *info )
{
DWORD dw;
void *ptr, *newptr;
int res, type, parse_type;
size_t maxlen, len;
struct key_value *value;
if (!(value = parse_value_name( key, buffer, &len, info ))) return 0;
if (!(res = get_data_type( buffer + len, &type, &parse_type ))) goto error;
buffer += len + res;
switch(parse_type)
{
case REG_SZ:
len = strlen(buffer) * sizeof(WCHAR);
if (!get_file_tmp_space( info, len )) return 0;
if ((res = parse_strW( info->tmp, &len, buffer, '\"' )) == -1) goto error;
ptr = info->tmp;
break;
case REG_DWORD:
dw = strtoul( buffer, NULL, 16 );
ptr = &dw;
len = sizeof(dw);
break;
case REG_BINARY: /* hex digits */
len = 0;
for (;;)
{
maxlen = 1 + strlen(buffer)/3; /* 3 chars for one hex byte */
if (!get_file_tmp_space( info, len + maxlen )) return 0;
if ((res = parse_hex( (unsigned char *)info->tmp + len, &maxlen, buffer )) == -1) goto error;
len += maxlen;
buffer += res;
while (isspace(*buffer)) buffer++;
if (!*buffer) break;
if (*buffer != '\\') goto error;
if (read_next_line( info) != 1) goto error;
buffer = info->buffer;
while (isspace(*buffer)) buffer++;
}
ptr = info->tmp;
break;
default:
assert(0);
ptr = NULL; /* keep compiler quiet */
break;
}
if (!len) newptr = NULL;
else if (!(newptr = memdup( ptr, len ))) return 0;
if (value->data) free( value->data );
value->data = newptr;
value->len = len;
value->type = type;
make_dirty( key );
return 1;
error:
file_read_error( "Malformed value", info );
return 0;
}
/* return the length (in path elements) of name that is part of the key name */
/* for instance if key is USER\foo\bar and name is foo\bar\baz, return 2 */
static int get_prefix_len( struct key *key, const char *name, struct file_load_info *info )
{
WCHAR *p;
int res;
size_t len = strlen(name) * sizeof(WCHAR);
if (!get_file_tmp_space( info, len )) return 0;
if ((res = parse_strW( info->tmp, &len, name, ']' )) == -1)
{
file_read_error( "Malformed key", info );
return 0;
}
for (p = info->tmp; *p; p++) if (*p == '\\') break;
len = (p - info->tmp) * sizeof(WCHAR);
for (res = 1; key != root_key; res++)
{
if (len == key->namelen && !memicmpW( info->tmp, key->name, len / sizeof(WCHAR) )) break;
key = key->parent;
}
if (key == root_key) res = 0; /* no matching name */
return res;
}
/* load all the keys from the input file */
/* prefix_len is the number of key name prefixes to skip, or -1 for autodetection */
static void load_keys( struct key *key, const char *filename, FILE *f, int prefix_len )
{
struct key *subkey = NULL;
struct file_load_info info;
char *p;
int default_modif = time(NULL);
int flags = (key->flags & KEY_VOLATILE) ? KEY_VOLATILE : KEY_DIRTY;
info.filename = filename;
info.file = f;
info.len = 4;
info.tmplen = 4;
info.line = 0;
if (!(info.buffer = mem_alloc( info.len ))) return;
if (!(info.tmp = mem_alloc( info.tmplen )))
{
free( info.buffer );
return;
}
if ((read_next_line( &info ) != 1) ||
strcmp( info.buffer, "WINE REGISTRY Version 2" ))
{
set_error( STATUS_NOT_REGISTRY_FILE );
goto done;
}
while (read_next_line( &info ) == 1)
{
p = info.buffer;
while (*p && isspace(*p)) p++;
switch(*p)
{
case '[': /* new key */
if (subkey) release_object( subkey );
if (prefix_len == -1) prefix_len = get_prefix_len( key, p + 1, &info );
if (!(subkey = load_key( key, p + 1, flags, prefix_len, &info, default_modif )))
file_read_error( "Error creating key", &info );
break;
case '@': /* default value */
case '\"': /* value */
if (subkey) load_value( subkey, p, &info );
else file_read_error( "Value without key", &info );
break;
case '#': /* comment */
case ';': /* comment */
case 0: /* empty line */
break;
default:
file_read_error( "Unrecognized input", &info );
break;
}
}
done:
if (subkey) release_object( subkey );
free( info.buffer );
free( info.tmp );
}
/* load a part of the registry from a file */
static void load_registry( struct key *key, obj_handle_t handle )
{
struct file *file;
int fd;
if (!(file = get_file_obj( current->process, handle, FILE_READ_DATA ))) return;
fd = dup( get_file_unix_fd( file ) );
release_object( file );
if (fd != -1)
{
FILE *f = fdopen( fd, "r" );
if (f)
{
load_keys( key, NULL, f, -1 );
fclose( f );
}
else file_set_error();
}
}
/* load one of the initial registry files */
static void load_init_registry_from_file( const char *filename, struct key *key )
{
FILE *f;
if ((f = fopen( filename, "r" )))
{
load_keys( key, filename, f, 0 );
fclose( f );
if (get_error() == STATUS_NOT_REGISTRY_FILE)
{
fprintf( stderr, "%s is not a valid registry file\n", filename );
return;
}
}
assert( save_branch_count < MAX_SAVE_BRANCH_INFO );
if ((save_branch_info[save_branch_count].path = strdup( filename )))
{
save_branch_info[save_branch_count++].key = (struct key *)grab_object( key );
make_object_static( &key->obj );
}
}
static WCHAR *format_user_registry_path( const SID *sid, struct unicode_str *path )
{
static const WCHAR prefixW[] = {'U','s','e','r','\\','S',0};
static const WCHAR formatW[] = {'-','%','u',0};
WCHAR buffer[7 + 10 + 10 + 10 * SID_MAX_SUB_AUTHORITIES];
WCHAR *p = buffer;
unsigned int i;
strcpyW( p, prefixW );
p += strlenW( prefixW );
p += sprintfW( p, formatW, sid->Revision );
p += sprintfW( p, formatW, MAKELONG( MAKEWORD( sid->IdentifierAuthority.Value[5],
sid->IdentifierAuthority.Value[4] ),
MAKEWORD( sid->IdentifierAuthority.Value[3],
sid->IdentifierAuthority.Value[2] )));
for (i = 0; i < sid->SubAuthorityCount; i++)
p += sprintfW( p, formatW, sid->SubAuthority[i] );
path->len = (p - buffer) * sizeof(WCHAR);
path->str = p = memdup( buffer, path->len );
return p;
}
/* registry initialisation */
void init_registry(void)
{
static const WCHAR HKLM[] = { 'M','a','c','h','i','n','e' };
static const WCHAR HKU_default[] = { 'U','s','e','r','\\','.','D','e','f','a','u','l','t' };
static const struct unicode_str root_name = { NULL, 0 };
static const struct unicode_str HKLM_name = { HKLM, sizeof(HKLM) };
static const struct unicode_str HKU_name = { HKU_default, sizeof(HKU_default) };
WCHAR *current_user_path;
struct unicode_str current_user_str;
const char *config = wine_get_config_dir();
char *p, *filename;
struct key *key;
int dummy;
/* create the root key */
root_key = alloc_key( &root_name, time(NULL) );
assert( root_key );
make_object_static( &root_key->obj );
if (!(filename = malloc( strlen(config) + 16 ))) fatal_error( "out of memory\n" );
strcpy( filename, config );
p = filename + strlen(filename);
/* load system.reg into Registry\Machine */
if (!(key = create_key( root_key, &HKLM_name, NULL, 0, time(NULL), &dummy )))
fatal_error( "could not create Machine registry key\n" );
strcpy( p, "/system.reg" );
load_init_registry_from_file( filename, key );
release_object( key );
/* load userdef.reg into Registry\User\.Default */
if (!(key = create_key( root_key, &HKU_name, NULL, 0, time(NULL), &dummy )))
fatal_error( "could not create User\\.Default registry key\n" );
strcpy( p, "/userdef.reg" );
load_init_registry_from_file( filename, key );
release_object( key );
/* load user.reg into HKEY_CURRENT_USER */
/* FIXME: match default user in token.c. should get from process token instead */
current_user_path = format_user_registry_path( security_interactive_sid, &current_user_str );
if (!current_user_path ||
!(key = create_key( root_key, &current_user_str, NULL, 0, time(NULL), &dummy )))
fatal_error( "could not create HKEY_CURRENT_USER registry key\n" );
free( current_user_path );
strcpy( p, "/user.reg" );
load_init_registry_from_file( filename, key );
release_object( key );
free( filename );
/* start the periodic save timer */
set_periodic_save_timer();
}
/* save a registry branch to a file */
static void save_all_subkeys( struct key *key, FILE *f )
{
fprintf( f, "WINE REGISTRY Version 2\n" );
fprintf( f, ";; All keys relative to " );
dump_path( key, NULL, f );
fprintf( f, "\n" );
save_subkeys( key, key, f );
}
/* save a registry branch to a file handle */
static void save_registry( struct key *key, obj_handle_t handle )
{
struct file *file;
int fd;
if (key->flags & KEY_DELETED)
{
set_error( STATUS_KEY_DELETED );
return;
}
if (!(file = get_file_obj( current->process, handle, FILE_WRITE_DATA ))) return;
fd = dup( get_file_unix_fd( file ) );
release_object( file );
if (fd != -1)
{
FILE *f = fdopen( fd, "w" );
if (f)
{
save_all_subkeys( key, f );
if (fclose( f )) file_set_error();
}
else
{
file_set_error();
close( fd );
}
}
}
/* save a registry branch to a file */
static int save_branch( struct key *key, const char *path )
{
struct stat st;
char *p, *real, *tmp = NULL;
int fd, count = 0, ret = 0, by_symlink;
FILE *f;
if (!(key->flags & KEY_DIRTY))
{
if (debug_level > 1) dump_operation( key, NULL, "Not saving clean" );
return 1;
}
/* get the real path */
by_symlink = (!lstat(path, &st) && S_ISLNK (st.st_mode));
if (!(real = malloc( PATH_MAX ))) return 0;
if (!realpath( path, real ))
{
free( real );
real = NULL;
}
else path = real;
/* test the file type */
if ((fd = open( path, O_WRONLY )) != -1)
{
/* if file is not a regular file or has multiple links or is accessed
* via symbolic links, write directly into it; otherwise use a temp file */
if (by_symlink ||
(!fstat( fd, &st ) && (!S_ISREG(st.st_mode) || st.st_nlink > 1)))
{
ftruncate( fd, 0 );
goto save;
}
close( fd );
}
/* create a temp file in the same directory */
if (!(tmp = malloc( strlen(path) + 20 ))) goto done;
strcpy( tmp, path );
if ((p = strrchr( tmp, '/' ))) p++;
else p = tmp;
for (;;)
{
sprintf( p, "reg%lx%04x.tmp", (long) getpid(), count++ );
if ((fd = open( tmp, O_CREAT | O_EXCL | O_WRONLY, 0666 )) != -1) break;
if (errno != EEXIST) goto done;
close( fd );
}
/* now save to it */
save:
if (!(f = fdopen( fd, "w" )))
{
if (tmp) unlink( tmp );
close( fd );
goto done;
}
if (debug_level > 1)
{
fprintf( stderr, "%s: ", path );
dump_operation( key, NULL, "saving" );
}
save_all_subkeys( key, f );
ret = !fclose(f);
if (tmp)
{
/* if successfully written, rename to final name */
if (ret) ret = !rename( tmp, path );
if (!ret) unlink( tmp );
}
done:
free( tmp );
free( real );
if (ret) make_clean( key );
return ret;
}
/* periodic saving of the registry */
static void periodic_save( void *arg )
{
int i;
save_timeout_user = NULL;
for (i = 0; i < save_branch_count; i++)
save_branch( save_branch_info[i].key, save_branch_info[i].path );
set_periodic_save_timer();
}
/* start the periodic save timer */
static void set_periodic_save_timer(void)
{
struct timeval next;
gettimeofday( &next, NULL );
add_timeout( &next, save_period );
if (save_timeout_user) remove_timeout_user( save_timeout_user );
save_timeout_user = add_timeout_user( &next, periodic_save, NULL );
}
/* save the modified registry branches to disk */
void flush_registry(void)
{
int i;
for (i = 0; i < save_branch_count; i++)
{
if (!save_branch( save_branch_info[i].key, save_branch_info[i].path ))
{
fprintf( stderr, "wineserver: could not save registry branch to %s",
save_branch_info[i].path );
perror( " " );
}
}
}
/* create a registry key */
DECL_HANDLER(create_key)
{
struct key *key = NULL, *parent;
struct unicode_str name, class;
unsigned int access = req->access;
if (access & MAXIMUM_ALLOWED) access = KEY_ALL_ACCESS; /* FIXME: needs general solution */
reply->hkey = 0;
if (req->namelen > get_req_data_size())
{
set_error( STATUS_INVALID_PARAMETER );
return;
}
class.str = (const WCHAR *)get_req_data() + req->namelen / sizeof(WCHAR);
class.len = ((get_req_data_size() - req->namelen) / sizeof(WCHAR)) * sizeof(WCHAR);
get_req_path( &name, !req->parent );
if (name.str > class.str)
{
set_error( STATUS_INVALID_PARAMETER );
return;
}
name.len = (class.str - name.str) * sizeof(WCHAR);
/* NOTE: no access rights are required from the parent handle to create a key */
if ((parent = get_hkey_obj( req->parent, 0 )))
{
int flags = (req->options & REG_OPTION_VOLATILE) ? KEY_VOLATILE : KEY_DIRTY;
if ((key = create_key( parent, &name, &class, flags, req->modif, &reply->created )))
{
reply->hkey = alloc_handle( current->process, key, access, req->attributes );
release_object( key );
}
release_object( parent );
}
}
/* open a registry key */
DECL_HANDLER(open_key)
{
struct key *key, *parent;
struct unicode_str name;
unsigned int access = req->access;
if (access & MAXIMUM_ALLOWED) access = KEY_ALL_ACCESS; /* FIXME: needs general solution */
reply->hkey = 0;
/* NOTE: no access rights are required to open the parent key, only the child key */
if ((parent = get_hkey_obj( req->parent, 0 )))
{
get_req_path( &name, !req->parent );
if ((key = open_key( parent, &name )))
{
reply->hkey = alloc_handle( current->process, key, access, req->attributes );
release_object( key );
}
release_object( parent );
}
}
/* delete a registry key */
DECL_HANDLER(delete_key)
{
struct key *key;
if ((key = get_hkey_obj( req->hkey, DELETE )))
{
delete_key( key, 0);
release_object( key );
}
}
/* flush a registry key */
DECL_HANDLER(flush_key)
{
struct key *key = get_hkey_obj( req->hkey, 0 );
if (key)
{
/* we don't need to do anything here with the current implementation */
release_object( key );
}
}
/* enumerate registry subkeys */
DECL_HANDLER(enum_key)
{
struct key *key;
if ((key = get_hkey_obj( req->hkey,
req->index == -1 ? KEY_QUERY_VALUE : KEY_ENUMERATE_SUB_KEYS )))
{
enum_key( key, req->index, req->info_class, reply );
release_object( key );
}
}
/* set a value of a registry key */
DECL_HANDLER(set_key_value)
{
struct key *key;
struct unicode_str name;
if (req->namelen > get_req_data_size())
{
set_error( STATUS_INVALID_PARAMETER );
return;
}
name.str = get_req_data();
name.len = (req->namelen / sizeof(WCHAR)) * sizeof(WCHAR);
if ((key = get_hkey_obj( req->hkey, KEY_SET_VALUE )))
{
size_t datalen = get_req_data_size() - req->namelen;
const char *data = (const char *)get_req_data() + req->namelen;
set_value( key, &name, req->type, data, datalen );
release_object( key );
}
}
/* retrieve the value of a registry key */
DECL_HANDLER(get_key_value)
{
struct key *key;
struct unicode_str name;
reply->total = 0;
if ((key = get_hkey_obj( req->hkey, KEY_QUERY_VALUE )))
{
get_req_unicode_str( &name );
get_value( key, &name, &reply->type, &reply->total );
release_object( key );
}
}
/* enumerate the value of a registry key */
DECL_HANDLER(enum_key_value)
{
struct key *key;
if ((key = get_hkey_obj( req->hkey, KEY_QUERY_VALUE )))
{
enum_value( key, req->index, req->info_class, reply );
release_object( key );
}
}
/* delete a value of a registry key */
DECL_HANDLER(delete_key_value)
{
struct key *key;
struct unicode_str name;
if ((key = get_hkey_obj( req->hkey, KEY_SET_VALUE )))
{
get_req_unicode_str( &name );
delete_value( key, &name );
release_object( key );
}
}
/* load a registry branch from a file */
DECL_HANDLER(load_registry)
{
struct key *key, *parent;
struct token *token = thread_get_impersonation_token( current );
struct unicode_str name;
const LUID_AND_ATTRIBUTES privs[] =
{
{ SeBackupPrivilege, 0 },
{ SeRestorePrivilege, 0 },
};
if (!token || !token_check_privileges( token, TRUE, privs,
sizeof(privs)/sizeof(privs[0]), NULL ))
{
set_error( STATUS_PRIVILEGE_NOT_HELD );
return;
}
if ((parent = get_hkey_obj( req->hkey, 0 )))
{
int dummy;
get_req_path( &name, !req->hkey );
if ((key = create_key( parent, &name, NULL, KEY_DIRTY, time(NULL), &dummy )))
{
load_registry( key, req->file );
release_object( key );
}
release_object( parent );
}
}
DECL_HANDLER(unload_registry)
{
struct key *key;
struct token *token = thread_get_impersonation_token( current );
const LUID_AND_ATTRIBUTES privs[] =
{
{ SeBackupPrivilege, 0 },
{ SeRestorePrivilege, 0 },
};
if (!token || !token_check_privileges( token, TRUE, privs,
sizeof(privs)/sizeof(privs[0]), NULL ))
{
set_error( STATUS_PRIVILEGE_NOT_HELD );
return;
}
if ((key = get_hkey_obj( req->hkey, 0 )))
{
delete_key( key, 1 ); /* FIXME */
release_object( key );
}
}
/* save a registry branch to a file */
DECL_HANDLER(save_registry)
{
struct key *key;
if (!thread_single_check_privilege( current, &SeBackupPrivilege ))
{
set_error( STATUS_PRIVILEGE_NOT_HELD );
return;
}
if ((key = get_hkey_obj( req->hkey, 0 )))
{
save_registry( key, req->file );
release_object( key );
}
}
/* add a registry key change notification */
DECL_HANDLER(set_registry_notification)
{
struct key *key;
struct event *event;
struct notify *notify;
key = get_hkey_obj( req->hkey, KEY_NOTIFY );
if (key)
{
event = get_event_obj( current->process, req->event, SYNCHRONIZE );
if (event)
{
notify = find_notify( key, current->process, req->hkey );
if (notify)
{
release_object( notify->event );
grab_object( event );
notify->event = event;
}
else
{
notify = mem_alloc( sizeof(*notify) );
if (notify)
{
grab_object( event );
notify->event = event;
notify->subtree = req->subtree;
notify->filter = req->filter;
notify->hkey = req->hkey;
notify->process = current->process;
list_add_head( &key->notify_list, &notify->entry );
}
}
release_object( event );
}
release_object( key );
}
}
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