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make_unicode: Make it explicit what other default joining type is.
[wine/zf.git] / server / registry.c
blobc937e051597f5bfc6ef3cfa7e349a8066b2cadf2
1 /*
2 * Server-side registry management
3 *
4 * Copyright (C) 1999 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library 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 GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 /* To do:
22 * - symbolic links
23 */
24
25 #include "config.h"
26 #include "wine/port.h"
27
28 #include <assert.h>
29 #include <ctype.h>
30 #include <errno.h>
31 #include <fcntl.h>
32 #include <limits.h>
33 #include <stdio.h>
34 #include <stdarg.h>
35 #include <string.h>
36 #include <stdlib.h>
37 #include <sys/stat.h>
38 #include <unistd.h>
39
40 #include "ntstatus.h"
41 #define WIN32_NO_STATUS
42 #include "object.h"
43 #include "file.h"
44 #include "handle.h"
45 #include "request.h"
46 #include "process.h"
47 #include "unicode.h"
48 #include "security.h"
49
50 #include "winternl.h"
51
52 struct notify
53 {
54 struct list entry; /* entry in list of notifications */
55 struct event *event; /* event to set when changing this key */
56 int subtree; /* true if subtree notification */
57 unsigned int filter; /* which events to notify on */
58 obj_handle_t hkey; /* hkey associated with this notification */
59 struct process *process; /* process in which the hkey is valid */
60 };
61
62 /* a registry key */
63 struct key
64 {
65 struct object obj; /* object header */
66 WCHAR *name; /* key name */
67 WCHAR *class; /* key class */
68 unsigned short namelen; /* length of key name */
69 unsigned short classlen; /* length of class name */
70 struct key *parent; /* parent key */
71 int last_subkey; /* last in use subkey */
72 int nb_subkeys; /* count of allocated subkeys */
73 struct key **subkeys; /* subkeys array */
74 int last_value; /* last in use value */
75 int nb_values; /* count of allocated values in array */
76 struct key_value *values; /* values array */
77 unsigned int flags; /* flags */
78 timeout_t modif; /* last modification time */
79 struct list notify_list; /* list of notifications */
80 };
81
82 /* key flags */
83 #define KEY_VOLATILE 0x0001 /* key is volatile (not saved to disk) */
84 #define KEY_DELETED 0x0002 /* key has been deleted */
85 #define KEY_DIRTY 0x0004 /* key has been modified */
86 #define KEY_SYMLINK 0x0008 /* key is a symbolic link */
87 #define KEY_WOW64 0x0010 /* key contains a Wow6432Node subkey */
88 #define KEY_WOWSHARE 0x0020 /* key is a Wow64 shared key (used for Software\Classes) */
89
90 /* a key value */
91 struct key_value
92 {
93 WCHAR *name; /* value name */
94 unsigned short namelen; /* length of value name */
95 unsigned int type; /* value type */
96 data_size_t len; /* value data length in bytes */
97 void *data; /* pointer to value data */
98 };
99
100 #define MIN_SUBKEYS 8 /* min. number of allocated subkeys per key */
101 #define MIN_VALUES 8 /* min. number of allocated values per key */
102
103 #define MAX_NAME_LEN 256 /* max. length of a key name */
104 #define MAX_VALUE_LEN 16383 /* max. length of a value name */
105
106 /* the root of the registry tree */
107 static struct key *root_key;
108
109 static const timeout_t ticks_1601_to_1970 = (timeout_t)86400 * (369 * 365 + 89) * TICKS_PER_SEC;
110 static const timeout_t save_period = 30 * -TICKS_PER_SEC; /* delay between periodic saves */
111 static struct timeout_user *save_timeout_user; /* saving timer */
112 static enum prefix_type { PREFIX_UNKNOWN, PREFIX_32BIT, PREFIX_64BIT } prefix_type;
113
114 static const WCHAR root_name[] = { '\\','R','e','g','i','s','t','r','y','\\' };
115 static const WCHAR wow6432node[] = {'W','o','w','6','4','3','2','N','o','d','e'};
116 static const WCHAR symlink_value[] = {'S','y','m','b','o','l','i','c','L','i','n','k','V','a','l','u','e'};
117 static const struct unicode_str symlink_str = { symlink_value, sizeof(symlink_value) };
118
119 static void set_periodic_save_timer(void);
120 static struct key_value *find_value( const struct key *key, const struct unicode_str *name, int *index );
121
122 /* information about where to save a registry branch */
123 struct save_branch_info
124 {
125 struct key *key;
126 const char *path;
127 };
128
129 #define MAX_SAVE_BRANCH_INFO 3
130 static int save_branch_count;
131 static struct save_branch_info save_branch_info[MAX_SAVE_BRANCH_INFO];
132
133
134 /* information about a file being loaded */
135 struct file_load_info
136 {
137 const char *filename; /* input file name */
138 FILE *file; /* input file */
139 char *buffer; /* line buffer */
140 int len; /* buffer length */
141 int line; /* current input line */
142 WCHAR *tmp; /* temp buffer to use while parsing input */
143 size_t tmplen; /* length of temp buffer */
144 };
145
146
147 static void key_dump( struct object *obj, int verbose );
148 static struct object_type *key_get_type( struct object *obj );
149 static unsigned int key_map_access( struct object *obj, unsigned int access );
150 static struct security_descriptor *key_get_sd( struct object *obj );
151 static WCHAR *key_get_full_name( struct object *obj, data_size_t *len );
152 static int key_close_handle( struct object *obj, struct process *process, obj_handle_t handle );
153 static void key_destroy( struct object *obj );
154
155 static const struct object_ops key_ops =
156 {
157 sizeof(struct key), /* size */
158 key_dump, /* dump */
159 key_get_type, /* get_type */
160 no_add_queue, /* add_queue */
161 NULL, /* remove_queue */
162 NULL, /* signaled */
163 NULL, /* satisfied */
164 no_signal, /* signal */
165 no_get_fd, /* get_fd */
166 key_map_access, /* map_access */
167 key_get_sd, /* get_sd */
168 default_set_sd, /* set_sd */
169 key_get_full_name, /* get_full_name */
170 no_lookup_name, /* lookup_name */
171 no_link_name, /* link_name */
172 NULL, /* unlink_name */
173 no_open_file, /* open_file */
174 no_kernel_obj_list, /* get_kernel_obj_list */
175 key_close_handle, /* close_handle */
176 key_destroy /* destroy */
177 };
178
179
180 static inline int is_wow6432node( const WCHAR *name, unsigned int len )
181 {
182 return (len == sizeof(wow6432node) && !memicmp_strW( name, wow6432node, sizeof( wow6432node )));
183 }
184
185 /*
186 * The registry text file format v2 used by this code is similar to the one
187 * used by REGEDIT import/export functionality, with the following differences:
188 * - strings and key names can contain \x escapes for Unicode
189 * - key names use escapes too in order to support Unicode
190 * - the modification time optionally follows the key name
191 * - REG_EXPAND_SZ and REG_MULTI_SZ are saved as strings instead of hex
192 */
193
194 /* dump the full path of a key */
195 static void dump_path( const struct key *key, const struct key *base, FILE *f )
196 {
197 if (key->parent && key->parent != base)
198 {
199 dump_path( key->parent, base, f );
200 fprintf( f, "\\\\" );
201 }
202 dump_strW( key->name, key->namelen, f, "[]" );
203 }
204
205 /* dump a value to a text file */
206 static void dump_value( const struct key_value *value, FILE *f )
207 {
208 unsigned int i, dw;
209 int count;
210
211 if (value->namelen)
212 {
213 fputc( '\"', f );
214 count = 1 + dump_strW( value->name, value->namelen, f, "\"\"" );
215 count += fprintf( f, "\"=" );
216 }
217 else count = fprintf( f, "@=" );
218
219 switch(value->type)
220 {
221 case REG_SZ:
222 case REG_EXPAND_SZ:
223 case REG_MULTI_SZ:
224 /* only output properly terminated strings in string format */
225 if (value->len < sizeof(WCHAR)) break;
226 if (value->len % sizeof(WCHAR)) break;
227 if (((WCHAR *)value->data)[value->len / sizeof(WCHAR) - 1]) break;
228 if (value->type != REG_SZ) fprintf( f, "str(%x):", value->type );
229 fputc( '\"', f );
230 dump_strW( (WCHAR *)value->data, value->len, f, "\"\"" );
231 fprintf( f, "\"\n" );
232 return;
233
234 case REG_DWORD:
235 if (value->len != sizeof(dw)) break;
236 memcpy( &dw, value->data, sizeof(dw) );
237 fprintf( f, "dword:%08x\n", dw );
238 return;
239 }
240
241 if (value->type == REG_BINARY) count += fprintf( f, "hex:" );
242 else count += fprintf( f, "hex(%x):", value->type );
243 for (i = 0; i < value->len; i++)
244 {
245 count += fprintf( f, "%02x", *((unsigned char *)value->data + i) );
246 if (i < value->len-1)
247 {
248 fputc( ',', f );
249 if (++count > 76)
250 {
251 fprintf( f, "\\\n " );
252 count = 2;
253 }
254 }
255 }
256 fputc( '\n', f );
257 }
258
259 /* save a registry and all its subkeys to a text file */
260 static void save_subkeys( const struct key *key, const struct key *base, FILE *f )
261 {
262 int i;
263
264 if (key->flags & KEY_VOLATILE) return;
265 /* save key if it has either some values or no subkeys, or needs special options */
266 /* keys with no values but subkeys are saved implicitly by saving the subkeys */
267 if ((key->last_value >= 0) || (key->last_subkey == -1) || key->class || (key->flags & KEY_SYMLINK))
268 {
269 fprintf( f, "\n[" );
270 if (key != base) dump_path( key, base, f );
271 fprintf( f, "] %u\n", (unsigned int)((key->modif - ticks_1601_to_1970) / TICKS_PER_SEC) );
272 fprintf( f, "#time=%x%08x\n", (unsigned int)(key->modif >> 32), (unsigned int)key->modif );
273 if (key->class)
274 {
275 fprintf( f, "#class=\"" );
276 dump_strW( key->class, key->classlen, f, "\"\"" );
277 fprintf( f, "\"\n" );
278 }
279 if (key->flags & KEY_SYMLINK) fputs( "#link\n", f );
280 for (i = 0; i <= key->last_value; i++) dump_value( &key->values[i], f );
281 }
282 for (i = 0; i <= key->last_subkey; i++) save_subkeys( key->subkeys[i], base, f );
283 }
284
285 static void dump_operation( const struct key *key, const struct key_value *value, const char *op )
286 {
287 fprintf( stderr, "%s key ", op );
288 if (key) dump_path( key, NULL, stderr );
289 else fprintf( stderr, "ERROR" );
290 if (value)
291 {
292 fprintf( stderr, " value ");
293 dump_value( value, stderr );
294 }
295 else fprintf( stderr, "\n" );
296 }
297
298 static void key_dump( struct object *obj, int verbose )
299 {
300 struct key *key = (struct key *)obj;
301 assert( obj->ops == &key_ops );
302 fprintf( stderr, "Key flags=%x ", key->flags );
303 dump_path( key, NULL, stderr );
304 fprintf( stderr, "\n" );
305 }
306
307 static struct object_type *key_get_type( struct object *obj )
308 {
309 static const WCHAR name[] = {'K','e','y'};
310 static const struct unicode_str str = { name, sizeof(name) };
311 return get_object_type( &str );
312 }
313
314 /* notify waiter and maybe delete the notification */
315 static void do_notification( struct key *key, struct notify *notify, int del )
316 {
317 if (notify->event)
318 {
319 set_event( notify->event );
320 release_object( notify->event );
321 notify->event = NULL;
322 }
323 if (del)
324 {
325 list_remove( &notify->entry );
326 free( notify );
327 }
328 }
329
330 static inline struct notify *find_notify( struct key *key, struct process *process, obj_handle_t hkey )
331 {
332 struct notify *notify;
333
334 LIST_FOR_EACH_ENTRY( notify, &key->notify_list, struct notify, entry )
335 {
336 if (notify->process == process && notify->hkey == hkey) return notify;
337 }
338 return NULL;
339 }
340
341 static unsigned int key_map_access( struct object *obj, unsigned int access )
342 {
343 if (access & GENERIC_READ) access |= KEY_READ;
344 if (access & GENERIC_WRITE) access |= KEY_WRITE;
345 if (access & GENERIC_EXECUTE) access |= KEY_EXECUTE;
346 if (access & GENERIC_ALL) access |= KEY_ALL_ACCESS;
347 /* filter the WOW64 masks, as they aren't real access bits */
348 return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL |
349 KEY_WOW64_64KEY | KEY_WOW64_32KEY);
350 }
351
352 static struct security_descriptor *key_get_sd( struct object *obj )
353 {
354 static struct security_descriptor *key_default_sd;
355
356 if (obj->sd) return obj->sd;
357
358 if (!key_default_sd)
359 {
360 size_t users_sid_len = security_sid_len( security_builtin_users_sid );
361 size_t admins_sid_len = security_sid_len( security_builtin_admins_sid );
362 size_t dacl_len = sizeof(ACL) + 2 * offsetof( ACCESS_ALLOWED_ACE, SidStart )
363 + users_sid_len + admins_sid_len;
364 ACCESS_ALLOWED_ACE *aaa;
365 ACL *dacl;
366
367 key_default_sd = mem_alloc( sizeof(*key_default_sd) + 2 * admins_sid_len + dacl_len );
368 key_default_sd->control = SE_DACL_PRESENT;
369 key_default_sd->owner_len = admins_sid_len;
370 key_default_sd->group_len = admins_sid_len;
371 key_default_sd->sacl_len = 0;
372 key_default_sd->dacl_len = dacl_len;
373 memcpy( key_default_sd + 1, security_builtin_admins_sid, admins_sid_len );
374 memcpy( (char *)(key_default_sd + 1) + admins_sid_len, security_builtin_admins_sid, admins_sid_len );
375
376 dacl = (ACL *)((char *)(key_default_sd + 1) + 2 * admins_sid_len);
377 dacl->AclRevision = ACL_REVISION;
378 dacl->Sbz1 = 0;
379 dacl->AclSize = dacl_len;
380 dacl->AceCount = 2;
381 dacl->Sbz2 = 0;
382 aaa = (ACCESS_ALLOWED_ACE *)(dacl + 1);
383 aaa->Header.AceType = ACCESS_ALLOWED_ACE_TYPE;
384 aaa->Header.AceFlags = INHERIT_ONLY_ACE | CONTAINER_INHERIT_ACE;
385 aaa->Header.AceSize = offsetof( ACCESS_ALLOWED_ACE, SidStart ) + users_sid_len;
386 aaa->Mask = GENERIC_READ;
387 memcpy( &aaa->SidStart, security_builtin_users_sid, users_sid_len );
388 aaa = (ACCESS_ALLOWED_ACE *)((char *)aaa + aaa->Header.AceSize);
389 aaa->Header.AceType = ACCESS_ALLOWED_ACE_TYPE;
390 aaa->Header.AceFlags = 0;
391 aaa->Header.AceSize = offsetof( ACCESS_ALLOWED_ACE, SidStart ) + admins_sid_len;
392 aaa->Mask = KEY_ALL_ACCESS;
393 memcpy( &aaa->SidStart, security_builtin_admins_sid, admins_sid_len );
394 }
395 return key_default_sd;
396 }
397
398 static WCHAR *key_get_full_name( struct object *obj, data_size_t *ret_len )
399 {
400 static const WCHAR backslash = '\\';
401 struct key *key = (struct key *) obj;
402 data_size_t len = sizeof(root_name) - sizeof(WCHAR);
403 char *ret;
404
405 for (key = (struct key *)obj; key != root_key; key = key->parent) len += key->namelen + sizeof(WCHAR);
406 if (!(ret = malloc( len ))) return NULL;
407
408 *ret_len = len;
409 key = (struct key *)obj;
410 for (key = (struct key *)obj; key != root_key; key = key->parent)
411 {
412 memcpy( ret + len - key->namelen, key->name, key->namelen );
413 len -= key->namelen + sizeof(WCHAR);
414 memcpy( ret + len, &backslash, sizeof(WCHAR) );
415 }
416 memcpy( ret, root_name, sizeof(root_name) - sizeof(WCHAR) );
417 return (WCHAR *)ret;
418 }
419
420 /* close the notification associated with a handle */
421 static int key_close_handle( struct object *obj, struct process *process, obj_handle_t handle )
422 {
423 struct key * key = (struct key *) obj;
424 struct notify *notify = find_notify( key, process, handle );
425 if (notify) do_notification( key, notify, 1 );
426 return 1; /* ok to close */
427 }
428
429 static void key_destroy( struct object *obj )
430 {
431 int i;
432 struct list *ptr;
433 struct key *key = (struct key *)obj;
434 assert( obj->ops == &key_ops );
435
436 free( key->name );
437 free( key->class );
438 for (i = 0; i <= key->last_value; i++)
439 {
440 free( key->values[i].name );
441 free( key->values[i].data );
442 }
443 free( key->values );
444 for (i = 0; i <= key->last_subkey; i++)
445 {
446 key->subkeys[i]->parent = NULL;
447 release_object( key->subkeys[i] );
448 }
449 free( key->subkeys );
450 /* unconditionally notify everything waiting on this key */
451 while ((ptr = list_head( &key->notify_list )))
452 {
453 struct notify *notify = LIST_ENTRY( ptr, struct notify, entry );
454 do_notification( key, notify, 1 );
455 }
456 }
457
458 /* get the request vararg as registry path */
459 static inline void get_req_path( struct unicode_str *str, int skip_root )
460 {
461 str->str = get_req_data();
462 str->len = (get_req_data_size() / sizeof(WCHAR)) * sizeof(WCHAR);
463
464 if (skip_root && str->len >= sizeof(root_name) && !memicmp_strW( str->str, root_name, sizeof(root_name) ))
465 {
466 str->str += ARRAY_SIZE( root_name );
467 str->len -= sizeof(root_name);
468 }
469 }
470
471 /* return the next token in a given path */
472 /* token->str must point inside the path, or be NULL for the first call */
473 static struct unicode_str *get_path_token( const struct unicode_str *path, struct unicode_str *token )
474 {
475 data_size_t i = 0, len = path->len / sizeof(WCHAR);
476
477 if (!token->str) /* first time */
478 {
479 /* path cannot start with a backslash */
480 if (len && path->str[0] == '\\')
481 {
482 set_error( STATUS_OBJECT_PATH_INVALID );
483 return NULL;
484 }
485 }
486 else
487 {
488 i = token->str - path->str;
489 i += token->len / sizeof(WCHAR);
490 while (i < len && path->str[i] == '\\') i++;
491 }
492 token->str = path->str + i;
493 while (i < len && path->str[i] != '\\') i++;
494 token->len = (path->str + i - token->str) * sizeof(WCHAR);
495 return token;
496 }
497
498 /* allocate a key object */
499 static struct key *alloc_key( const struct unicode_str *name, timeout_t modif )
500 {
501 struct key *key;
502 if ((key = alloc_object( &key_ops )))
503 {
504 key->name = NULL;
505 key->class = NULL;
506 key->namelen = name->len;
507 key->classlen = 0;
508 key->flags = 0;
509 key->last_subkey = -1;
510 key->nb_subkeys = 0;
511 key->subkeys = NULL;
512 key->nb_values = 0;
513 key->last_value = -1;
514 key->values = NULL;
515 key->modif = modif;
516 key->parent = NULL;
517 list_init( &key->notify_list );
518 if (name->len && !(key->name = memdup( name->str, name->len )))
519 {
520 release_object( key );
521 key = NULL;
522 }
523 }
524 return key;
525 }
526
527 /* mark a key and all its parents as dirty (modified) */
528 static void make_dirty( struct key *key )
529 {
530 while (key)
531 {
532 if (key->flags & (KEY_DIRTY|KEY_VOLATILE)) return; /* nothing to do */
533 key->flags |= KEY_DIRTY;
534 key = key->parent;
535 }
536 }
537
538 /* mark a key and all its subkeys as clean (not modified) */
539 static void make_clean( struct key *key )
540 {
541 int i;
542
543 if (key->flags & KEY_VOLATILE) return;
544 if (!(key->flags & KEY_DIRTY)) return;
545 key->flags &= ~KEY_DIRTY;
546 for (i = 0; i <= key->last_subkey; i++) make_clean( key->subkeys[i] );
547 }
548
549 /* go through all the notifications and send them if necessary */
550 static void check_notify( struct key *key, unsigned int change, int not_subtree )
551 {
552 struct list *ptr, *next;
553
554 LIST_FOR_EACH_SAFE( ptr, next, &key->notify_list )
555 {
556 struct notify *n = LIST_ENTRY( ptr, struct notify, entry );
557 if ( ( not_subtree || n->subtree ) && ( change & n->filter ) )
558 do_notification( key, n, 0 );
559 }
560 }
561
562 /* update key modification time */
563 static void touch_key( struct key *key, unsigned int change )
564 {
565 struct key *k;
566
567 key->modif = current_time;
568 make_dirty( key );
569
570 /* do notifications */
571 check_notify( key, change, 1 );
572 for ( k = key->parent; k; k = k->parent )
573 check_notify( k, change, 0 );
574 }
575
576 /* try to grow the array of subkeys; return 1 if OK, 0 on error */
577 static int grow_subkeys( struct key *key )
578 {
579 struct key **new_subkeys;
580 int nb_subkeys;
581
582 if (key->nb_subkeys)
583 {
584 nb_subkeys = key->nb_subkeys + (key->nb_subkeys / 2); /* grow by 50% */
585 if (!(new_subkeys = realloc( key->subkeys, nb_subkeys * sizeof(*new_subkeys) )))
586 {
587 set_error( STATUS_NO_MEMORY );
588 return 0;
589 }
590 }
591 else
592 {
593 nb_subkeys = MIN_SUBKEYS;
594 if (!(new_subkeys = mem_alloc( nb_subkeys * sizeof(*new_subkeys) ))) return 0;
595 }
596 key->subkeys = new_subkeys;
597 key->nb_subkeys = nb_subkeys;
598 return 1;
599 }
600
601 /* allocate a subkey for a given key, and return its index */
602 static struct key *alloc_subkey( struct key *parent, const struct unicode_str *name,
603 int index, timeout_t modif )
604 {
605 struct key *key;
606 int i;
607
608 if (name->len > MAX_NAME_LEN * sizeof(WCHAR))
609 {
610 set_error( STATUS_INVALID_PARAMETER );
611 return NULL;
612 }
613 if (parent->last_subkey + 1 == parent->nb_subkeys)
614 {
615 /* need to grow the array */
616 if (!grow_subkeys( parent )) return NULL;
617 }
618 if ((key = alloc_key( name, modif )) != NULL)
619 {
620 key->parent = parent;
621 for (i = ++parent->last_subkey; i > index; i--)
622 parent->subkeys[i] = parent->subkeys[i-1];
623 parent->subkeys[index] = key;
624 if (is_wow6432node( key->name, key->namelen ) && !is_wow6432node( parent->name, parent->namelen ))
625 parent->flags |= KEY_WOW64;
626 }
627 return key;
628 }
629
630 /* free a subkey of a given key */
631 static void free_subkey( struct key *parent, int index )
632 {
633 struct key *key;
634 int i, nb_subkeys;
635
636 assert( index >= 0 );
637 assert( index <= parent->last_subkey );
638
639 key = parent->subkeys[index];
640 for (i = index; i < parent->last_subkey; i++) parent->subkeys[i] = parent->subkeys[i + 1];
641 parent->last_subkey--;
642 key->flags |= KEY_DELETED;
643 key->parent = NULL;
644 if (is_wow6432node( key->name, key->namelen )) parent->flags &= ~KEY_WOW64;
645 release_object( key );
646
647 /* try to shrink the array */
648 nb_subkeys = parent->nb_subkeys;
649 if (nb_subkeys > MIN_SUBKEYS && parent->last_subkey < nb_subkeys / 2)
650 {
651 struct key **new_subkeys;
652 nb_subkeys -= nb_subkeys / 3; /* shrink by 33% */
653 if (nb_subkeys < MIN_SUBKEYS) nb_subkeys = MIN_SUBKEYS;
654 if (!(new_subkeys = realloc( parent->subkeys, nb_subkeys * sizeof(*new_subkeys) ))) return;
655 parent->subkeys = new_subkeys;
656 parent->nb_subkeys = nb_subkeys;
657 }
658 }
659
660 /* find the named child of a given key and return its index */
661 static struct key *find_subkey( const struct key *key, const struct unicode_str *name, int *index )
662 {
663 int i, min, max, res;
664 data_size_t len;
665
666 min = 0;
667 max = key->last_subkey;
668 while (min <= max)
669 {
670 i = (min + max) / 2;
671 len = min( key->subkeys[i]->namelen, name->len );
672 res = memicmp_strW( key->subkeys[i]->name, name->str, len );
673 if (!res) res = key->subkeys[i]->namelen - name->len;
674 if (!res)
675 {
676 *index = i;
677 return key->subkeys[i];
678 }
679 if (res > 0) max = i - 1;
680 else min = i + 1;
681 }
682 *index = min; /* this is where we should insert it */
683 return NULL;
684 }
685
686 /* return the wow64 variant of the key, or the key itself if none */
687 static struct key *find_wow64_subkey( struct key *key, const struct unicode_str *name )
688 {
689 static const struct unicode_str wow6432node_str = { wow6432node, sizeof(wow6432node) };
690 int index;
691
692 if (!(key->flags & KEY_WOW64)) return key;
693 if (!is_wow6432node( name->str, name->len ))
694 {
695 key = find_subkey( key, &wow6432node_str, &index );
696 assert( key ); /* if KEY_WOW64 is set we must find it */
697 }
698 return key;
699 }
700
701
702 /* follow a symlink and return the resolved key */
703 static struct key *follow_symlink( struct key *key, int iteration )
704 {
705 struct unicode_str path, token;
706 struct key_value *value;
707 int index;
708
709 if (iteration > 16) return NULL;
710 if (!(key->flags & KEY_SYMLINK)) return key;
711 if (!(value = find_value( key, &symlink_str, &index ))) return NULL;
712
713 path.str = value->data;
714 path.len = (value->len / sizeof(WCHAR)) * sizeof(WCHAR);
715 if (path.len <= sizeof(root_name)) return NULL;
716 if (memicmp_strW( path.str, root_name, sizeof(root_name) )) return NULL;
717 path.str += ARRAY_SIZE( root_name );
718 path.len -= sizeof(root_name);
719
720 key = root_key;
721 token.str = NULL;
722 if (!get_path_token( &path, &token )) return NULL;
723 while (token.len)
724 {
725 if (!(key = find_subkey( key, &token, &index ))) break;
726 if (!(key = follow_symlink( key, iteration + 1 ))) break;
727 get_path_token( &path, &token );
728 }
729 return key;
730 }
731
732 /* open a key until we find an element that doesn't exist */
733 /* helper for open_key and create_key */
734 static struct key *open_key_prefix( struct key *key, const struct unicode_str *name,
735 unsigned int access, struct unicode_str *token, int *index )
736 {
737 token->str = NULL;
738 if (!get_path_token( name, token )) return NULL;
739 if (access & KEY_WOW64_32KEY) key = find_wow64_subkey( key, token );
740 while (token->len)
741 {
742 struct key *subkey;
743 if (!(subkey = find_subkey( key, token, index )))
744 {
745 if ((key->flags & KEY_WOWSHARE) && !(access & KEY_WOW64_64KEY))
746 {
747 /* try in the 64-bit parent */
748 key = key->parent;
749 subkey = find_subkey( key, token, index );
750 }
751 }
752 if (!subkey) break;
753 key = subkey;
754 get_path_token( name, token );
755 if (!token->len) break;
756 if (!(access & KEY_WOW64_64KEY)) key = find_wow64_subkey( key, token );
757 if (!(key = follow_symlink( key, 0 )))
758 {
759 set_error( STATUS_OBJECT_NAME_NOT_FOUND );
760 return NULL;
761 }
762 }
763 return key;
764 }
765
766 /* open a subkey */
767 static struct key *open_key( struct key *key, const struct unicode_str *name, unsigned int access,
768 unsigned int attributes )
769 {
770 int index;
771 struct unicode_str token;
772
773 if (!(key = open_key_prefix( key, name, access, &token, &index ))) return NULL;
774
775 if (token.len)
776 {
777 set_error( STATUS_OBJECT_NAME_NOT_FOUND );
778 return NULL;
779 }
780 if (!(access & KEY_WOW64_64KEY)) key = find_wow64_subkey( key, &token );
781 if (!(attributes & OBJ_OPENLINK) && !(key = follow_symlink( key, 0 )))
782 {
783 set_error( STATUS_OBJECT_NAME_NOT_FOUND );
784 return NULL;
785 }
786 if (debug_level > 1) dump_operation( key, NULL, "Open" );
787 grab_object( key );
788 return key;
789 }
790
791 /* create a subkey */
792 static struct key *create_key( struct key *key, const struct unicode_str *name,
793 const struct unicode_str *class, unsigned int options,
794 unsigned int access, unsigned int attributes,
795 const struct security_descriptor *sd, int *created )
796 {
797 int index;
798 struct unicode_str token, next;
799
800 *created = 0;
801 if (!(key = open_key_prefix( key, name, access, &token, &index ))) return NULL;
802
803 if (!token.len) /* the key already exists */
804 {
805 if (!(access & KEY_WOW64_64KEY)) key = find_wow64_subkey( key, &token );
806 if (options & REG_OPTION_CREATE_LINK)
807 {
808 set_error( STATUS_OBJECT_NAME_COLLISION );
809 return NULL;
810 }
811 if (!(attributes & OBJ_OPENLINK) && !(key = follow_symlink( key, 0 )))
812 {
813 set_error( STATUS_OBJECT_NAME_NOT_FOUND );
814 return NULL;
815 }
816 if (debug_level > 1) dump_operation( key, NULL, "Open" );
817 grab_object( key );
818 return key;
819 }
820
821 /* token must be the last path component at this point */
822 next = token;
823 get_path_token( name, &next );
824 if (next.len)
825 {
826 set_error( STATUS_OBJECT_NAME_NOT_FOUND );
827 return NULL;
828 }
829
830 if ((key->flags & KEY_VOLATILE) && !(options & REG_OPTION_VOLATILE))
831 {
832 set_error( STATUS_CHILD_MUST_BE_VOLATILE );
833 return NULL;
834 }
835 *created = 1;
836 make_dirty( key );
837 if (!(key = alloc_subkey( key, &token, index, current_time ))) return NULL;
838
839 if (options & REG_OPTION_CREATE_LINK) key->flags |= KEY_SYMLINK;
840 if (options & REG_OPTION_VOLATILE) key->flags |= KEY_VOLATILE;
841 else key->flags |= KEY_DIRTY;
842
843 if (sd) default_set_sd( &key->obj, sd, OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION |
844 DACL_SECURITY_INFORMATION | SACL_SECURITY_INFORMATION );
845
846 if (debug_level > 1) dump_operation( key, NULL, "Create" );
847 if (class && class->len)
848 {
849 key->classlen = class->len;
850 free(key->class);
851 if (!(key->class = memdup( class->str, key->classlen ))) key->classlen = 0;
852 }
853 touch_key( key->parent, REG_NOTIFY_CHANGE_NAME );
854 grab_object( key );
855 return key;
856 }
857
858 /* recursively create a subkey (for internal use only) */
859 static struct key *create_key_recursive( struct key *key, const struct unicode_str *name, timeout_t modif )
860 {
861 struct key *base;
862 int index;
863 struct unicode_str token;
864
865 token.str = NULL;
866 if (!get_path_token( name, &token )) return NULL;
867 while (token.len)
868 {
869 struct key *subkey;
870 if (!(subkey = find_subkey( key, &token, &index ))) break;
871 key = subkey;
872 if (!(key = follow_symlink( key, 0 )))
873 {
874 set_error( STATUS_OBJECT_NAME_NOT_FOUND );
875 return NULL;
876 }
877 get_path_token( name, &token );
878 }
879
880 if (token.len)
881 {
882 if (!(key = alloc_subkey( key, &token, index, modif ))) return NULL;
883 base = key;
884 for (;;)
885 {
886 get_path_token( name, &token );
887 if (!token.len) break;
888 /* we know the index is always 0 in a new key */
889 if (!(key = alloc_subkey( key, &token, 0, modif )))
890 {
891 free_subkey( base, index );
892 return NULL;
893 }
894 }
895 }
896
897 grab_object( key );
898 return key;
899 }
900
901 /* query information about a key or a subkey */
902 static void enum_key( struct key *key, int index, int info_class, struct enum_key_reply *reply )
903 {
904 int i;
905 data_size_t len, namelen, classlen;
906 data_size_t max_subkey = 0, max_class = 0;
907 data_size_t max_value = 0, max_data = 0;
908 WCHAR *fullname = NULL;
909 char *data;
910
911 if (index != -1) /* -1 means use the specified key directly */
912 {
913 if ((index < 0) || (index > key->last_subkey))
914 {
915 set_error( STATUS_NO_MORE_ENTRIES );
916 return;
917 }
918 key = key->subkeys[index];
919 }
920
921 namelen = key->namelen;
922 classlen = key->classlen;
923
924 switch(info_class)
925 {
926 case KeyNameInformation:
927 if (!(fullname = key->obj.ops->get_full_name( &key->obj, &namelen ))) return;
928 /* fall through */
929 case KeyBasicInformation:
930 classlen = 0; /* only return the name */
931 /* fall through */
932 case KeyNodeInformation:
933 reply->max_subkey = 0;
934 reply->max_class = 0;
935 reply->max_value = 0;
936 reply->max_data = 0;
937 break;
938 case KeyFullInformation:
939 case KeyCachedInformation:
940 for (i = 0; i <= key->last_subkey; i++)
941 {
942 if (key->subkeys[i]->namelen > max_subkey) max_subkey = key->subkeys[i]->namelen;
943 if (key->subkeys[i]->classlen > max_class) max_class = key->subkeys[i]->classlen;
944 }
945 for (i = 0; i <= key->last_value; i++)
946 {
947 if (key->values[i].namelen > max_value) max_value = key->values[i].namelen;
948 if (key->values[i].len > max_data) max_data = key->values[i].len;
949 }
950 reply->max_subkey = max_subkey;
951 reply->max_class = max_class;
952 reply->max_value = max_value;
953 reply->max_data = max_data;
954 reply->namelen = namelen;
955 if (info_class == KeyCachedInformation)
956 classlen = 0; /* don't return any data, only its size */
957 namelen = 0; /* don't return name */
958 break;
959 default:
960 set_error( STATUS_INVALID_PARAMETER );
961 return;
962 }
963 reply->subkeys = key->last_subkey + 1;
964 reply->values = key->last_value + 1;
965 reply->modif = key->modif;
966 reply->total = namelen + classlen;
967
968 len = min( reply->total, get_reply_max_size() );
969 if (len && (data = set_reply_data_size( len )))
970 {
971 if (len > namelen)
972 {
973 reply->namelen = namelen;
974 memcpy( data, key->name, namelen );
975 memcpy( data + namelen, key->class, len - namelen );
976 }
977 else if (info_class == KeyNameInformation)
978 {
979 reply->namelen = namelen;
980 memcpy( data, fullname, len );
981 }
982 else
983 {
984 reply->namelen = len;
985 memcpy( data, key->name, len );
986 }
987 }
988 free( fullname );
989 if (debug_level > 1) dump_operation( key, NULL, "Enum" );
990 }
991
992 /* delete a key and its values */
993 static int delete_key( struct key *key, int recurse )
994 {
995 int index;
996 struct key *parent = key->parent;
997
998 /* must find parent and index */
999 if (key == root_key)
1000 {
1001 set_error( STATUS_ACCESS_DENIED );
1002 return -1;
1003 }
1004 assert( parent );
1005
1006 while (recurse && (key->last_subkey>=0))
1007 if (0 > delete_key(key->subkeys[key->last_subkey], 1))
1008 return -1;
1009
1010 for (index = 0; index <= parent->last_subkey; index++)
1011 if (parent->subkeys[index] == key) break;
1012 assert( index <= parent->last_subkey );
1013
1014 /* we can only delete a key that has no subkeys */
1015 if (key->last_subkey >= 0)
1016 {
1017 set_error( STATUS_ACCESS_DENIED );
1018 return -1;
1019 }
1020
1021 if (debug_level > 1) dump_operation( key, NULL, "Delete" );
1022 free_subkey( parent, index );
1023 touch_key( parent, REG_NOTIFY_CHANGE_NAME );
1024 return 0;
1025 }
1026
1027 /* try to grow the array of values; return 1 if OK, 0 on error */
1028 static int grow_values( struct key *key )
1029 {
1030 struct key_value *new_val;
1031 int nb_values;
1032
1033 if (key->nb_values)
1034 {
1035 nb_values = key->nb_values + (key->nb_values / 2); /* grow by 50% */
1036 if (!(new_val = realloc( key->values, nb_values * sizeof(*new_val) )))
1037 {
1038 set_error( STATUS_NO_MEMORY );
1039 return 0;
1040 }
1041 }
1042 else
1043 {
1044 nb_values = MIN_VALUES;
1045 if (!(new_val = mem_alloc( nb_values * sizeof(*new_val) ))) return 0;
1046 }
1047 key->values = new_val;
1048 key->nb_values = nb_values;
1049 return 1;
1050 }
1051
1052 /* find the named value of a given key and return its index in the array */
1053 static struct key_value *find_value( const struct key *key, const struct unicode_str *name, int *index )
1054 {
1055 int i, min, max, res;
1056 data_size_t len;
1057
1058 min = 0;
1059 max = key->last_value;
1060 while (min <= max)
1061 {
1062 i = (min + max) / 2;
1063 len = min( key->values[i].namelen, name->len );
1064 res = memicmp_strW( key->values[i].name, name->str, len );
1065 if (!res) res = key->values[i].namelen - name->len;
1066 if (!res)
1067 {
1068 *index = i;
1069 return &key->values[i];
1070 }
1071 if (res > 0) max = i - 1;
1072 else min = i + 1;
1073 }
1074 *index = min; /* this is where we should insert it */
1075 return NULL;
1076 }
1077
1078 /* insert a new value; the index must have been returned by find_value */
1079 static struct key_value *insert_value( struct key *key, const struct unicode_str *name, int index )
1080 {
1081 struct key_value *value;
1082 WCHAR *new_name = NULL;
1083 int i;
1084
1085 if (name->len > MAX_VALUE_LEN * sizeof(WCHAR))
1086 {
1087 set_error( STATUS_NAME_TOO_LONG );
1088 return NULL;
1089 }
1090 if (key->last_value + 1 == key->nb_values)
1091 {
1092 if (!grow_values( key )) return NULL;
1093 }
1094 if (name->len && !(new_name = memdup( name->str, name->len ))) return NULL;
1095 for (i = ++key->last_value; i > index; i--) key->values[i] = key->values[i - 1];
1096 value = &key->values[index];
1097 value->name = new_name;
1098 value->namelen = name->len;
1099 value->len = 0;
1100 value->data = NULL;
1101 return value;
1102 }
1103
1104 /* set a key value */
1105 static void set_value( struct key *key, const struct unicode_str *name,
1106 int type, const void *data, data_size_t len )
1107 {
1108 struct key_value *value;
1109 void *ptr = NULL;
1110 int index;
1111
1112 if ((value = find_value( key, name, &index )))
1113 {
1114 /* check if the new value is identical to the existing one */
1115 if (value->type == type && value->len == len &&
1116 value->data && !memcmp( value->data, data, len ))
1117 {
1118 if (debug_level > 1) dump_operation( key, value, "Skip setting" );
1119 return;
1120 }
1121 }
1122
1123 if (key->flags & KEY_SYMLINK)
1124 {
1125 if (type != REG_LINK || name->len != symlink_str.len ||
1126 memicmp_strW( name->str, symlink_str.str, name->len ))
1127 {
1128 set_error( STATUS_ACCESS_DENIED );
1129 return;
1130 }
1131 }
1132
1133 if (len && !(ptr = memdup( data, len ))) return;
1134
1135 if (!value)
1136 {
1137 if (!(value = insert_value( key, name, index )))
1138 {
1139 free( ptr );
1140 return;
1141 }
1142 }
1143 else free( value->data ); /* already existing, free previous data */
1144
1145 value->type = type;
1146 value->len = len;
1147 value->data = ptr;
1148 touch_key( key, REG_NOTIFY_CHANGE_LAST_SET );
1149 if (debug_level > 1) dump_operation( key, value, "Set" );
1150 }
1151
1152 /* get a key value */
1153 static void get_value( struct key *key, const struct unicode_str *name, int *type, data_size_t *len )
1154 {
1155 struct key_value *value;
1156 int index;
1157
1158 if ((value = find_value( key, name, &index )))
1159 {
1160 *type = value->type;
1161 *len = value->len;
1162 if (value->data) set_reply_data( value->data, min( value->len, get_reply_max_size() ));
1163 if (debug_level > 1) dump_operation( key, value, "Get" );
1164 }
1165 else
1166 {
1167 *type = -1;
1168 set_error( STATUS_OBJECT_NAME_NOT_FOUND );
1169 }
1170 }
1171
1172 /* enumerate a key value */
1173 static void enum_value( struct key *key, int i, int info_class, struct enum_key_value_reply *reply )
1174 {
1175 struct key_value *value;
1176
1177 if (i < 0 || i > key->last_value) set_error( STATUS_NO_MORE_ENTRIES );
1178 else
1179 {
1180 void *data;
1181 data_size_t namelen, maxlen;
1182
1183 value = &key->values[i];
1184 reply->type = value->type;
1185 namelen = value->namelen;
1186
1187 switch(info_class)
1188 {
1189 case KeyValueBasicInformation:
1190 reply->total = namelen;
1191 break;
1192 case KeyValueFullInformation:
1193 reply->total = namelen + value->len;
1194 break;
1195 case KeyValuePartialInformation:
1196 reply->total = value->len;
1197 namelen = 0;
1198 break;
1199 default:
1200 set_error( STATUS_INVALID_PARAMETER );
1201 return;
1202 }
1203
1204 maxlen = min( reply->total, get_reply_max_size() );
1205 if (maxlen && ((data = set_reply_data_size( maxlen ))))
1206 {
1207 if (maxlen > namelen)
1208 {
1209 reply->namelen = namelen;
1210 memcpy( data, value->name, namelen );
1211 memcpy( (char *)data + namelen, value->data, maxlen - namelen );
1212 }
1213 else
1214 {
1215 reply->namelen = maxlen;
1216 memcpy( data, value->name, maxlen );
1217 }
1218 }
1219 if (debug_level > 1) dump_operation( key, value, "Enum" );
1220 }
1221 }
1222
1223 /* delete a value */
1224 static void delete_value( struct key *key, const struct unicode_str *name )
1225 {
1226 struct key_value *value;
1227 int i, index, nb_values;
1228
1229 if (!(value = find_value( key, name, &index )))
1230 {
1231 set_error( STATUS_OBJECT_NAME_NOT_FOUND );
1232 return;
1233 }
1234 if (debug_level > 1) dump_operation( key, value, "Delete" );
1235 free( value->name );
1236 free( value->data );
1237 for (i = index; i < key->last_value; i++) key->values[i] = key->values[i + 1];
1238 key->last_value--;
1239 touch_key( key, REG_NOTIFY_CHANGE_LAST_SET );
1240
1241 /* try to shrink the array */
1242 nb_values = key->nb_values;
1243 if (nb_values > MIN_VALUES && key->last_value < nb_values / 2)
1244 {
1245 struct key_value *new_val;
1246 nb_values -= nb_values / 3; /* shrink by 33% */
1247 if (nb_values < MIN_VALUES) nb_values = MIN_VALUES;
1248 if (!(new_val = realloc( key->values, nb_values * sizeof(*new_val) ))) return;
1249 key->values = new_val;
1250 key->nb_values = nb_values;
1251 }
1252 }
1253
1254 /* get the registry key corresponding to an hkey handle */
1255 static struct key *get_hkey_obj( obj_handle_t hkey, unsigned int access )
1256 {
1257 struct key *key = (struct key *)get_handle_obj( current->process, hkey, access, &key_ops );
1258
1259 if (key && key->flags & KEY_DELETED)
1260 {
1261 set_error( STATUS_KEY_DELETED );
1262 release_object( key );
1263 key = NULL;
1264 }
1265 return key;
1266 }
1267
1268 /* get the registry key corresponding to a parent key handle */
1269 static inline struct key *get_parent_hkey_obj( obj_handle_t hkey )
1270 {
1271 if (!hkey) return (struct key *)grab_object( root_key );
1272 return get_hkey_obj( hkey, 0 );
1273 }
1274
1275 /* read a line from the input file */
1276 static int read_next_line( struct file_load_info *info )
1277 {
1278 char *newbuf;
1279 int newlen, pos = 0;
1280
1281 info->line++;
1282 for (;;)
1283 {
1284 if (!fgets( info->buffer + pos, info->len - pos, info->file ))
1285 return (pos != 0); /* EOF */
1286 pos = strlen(info->buffer);
1287 if (info->buffer[pos-1] == '\n')
1288 {
1289 /* got a full line */
1290 info->buffer[--pos] = 0;
1291 if (pos > 0 && info->buffer[pos-1] == '\r') info->buffer[pos-1] = 0;
1292 return 1;
1293 }
1294 if (pos < info->len - 1) return 1; /* EOF but something was read */
1295
1296 /* need to enlarge the buffer */
1297 newlen = info->len + info->len / 2;
1298 if (!(newbuf = realloc( info->buffer, newlen )))
1299 {
1300 set_error( STATUS_NO_MEMORY );
1301 return -1;
1302 }
1303 info->buffer = newbuf;
1304 info->len = newlen;
1305 }
1306 }
1307
1308 /* make sure the temp buffer holds enough space */
1309 static int get_file_tmp_space( struct file_load_info *info, size_t size )
1310 {
1311 WCHAR *tmp;
1312 if (info->tmplen >= size) return 1;
1313 if (!(tmp = realloc( info->tmp, size )))
1314 {
1315 set_error( STATUS_NO_MEMORY );
1316 return 0;
1317 }
1318 info->tmp = tmp;
1319 info->tmplen = size;
1320 return 1;
1321 }
1322
1323 /* report an error while loading an input file */
1324 static void file_read_error( const char *err, struct file_load_info *info )
1325 {
1326 if (info->filename)
1327 fprintf( stderr, "%s:%d: %s '%s'\n", info->filename, info->line, err, info->buffer );
1328 else
1329 fprintf( stderr, "<fd>:%d: %s '%s'\n", info->line, err, info->buffer );
1330 }
1331
1332 /* convert a data type tag to a value type */
1333 static int get_data_type( const char *buffer, int *type, int *parse_type )
1334 {
1335 struct data_type { const char *tag; int len; int type; int parse_type; };
1336
1337 static const struct data_type data_types[] =
1338 { /* actual type */ /* type to assume for parsing */
1339 { "\"", 1, REG_SZ, REG_SZ },
1340 { "str:\"", 5, REG_SZ, REG_SZ },
1341 { "str(2):\"", 8, REG_EXPAND_SZ, REG_SZ },
1342 { "str(7):\"", 8, REG_MULTI_SZ, REG_SZ },
1343 { "hex:", 4, REG_BINARY, REG_BINARY },
1344 { "dword:", 6, REG_DWORD, REG_DWORD },
1345 { "hex(", 4, -1, REG_BINARY },
1346 { NULL, 0, 0, 0 }
1347 };
1348
1349 const struct data_type *ptr;
1350 char *end;
1351
1352 for (ptr = data_types; ptr->tag; ptr++)
1353 {
1354 if (strncmp( ptr->tag, buffer, ptr->len )) continue;
1355 *parse_type = ptr->parse_type;
1356 if ((*type = ptr->type) != -1) return ptr->len;
1357 /* "hex(xx):" is special */
1358 *type = (int)strtoul( buffer + 4, &end, 16 );
1359 if ((end <= buffer) || strncmp( end, "):", 2 )) return 0;
1360 return end + 2 - buffer;
1361 }
1362 return 0;
1363 }
1364
1365 /* load and create a key from the input file */
1366 static struct key *load_key( struct key *base, const char *buffer, int prefix_len,
1367 struct file_load_info *info, timeout_t *modif )
1368 {
1369 WCHAR *p;
1370 struct unicode_str name;
1371 int res;
1372 unsigned int mod;
1373 data_size_t len;
1374
1375 if (!get_file_tmp_space( info, strlen(buffer) * sizeof(WCHAR) )) return NULL;
1376
1377 len = info->tmplen;
1378 if ((res = parse_strW( info->tmp, &len, buffer, ']' )) == -1)
1379 {
1380 file_read_error( "Malformed key", info );
1381 return NULL;
1382 }
1383 if (sscanf( buffer + res, " %u", &mod ) == 1)
1384 *modif = (timeout_t)mod * TICKS_PER_SEC + ticks_1601_to_1970;
1385 else
1386 *modif = current_time;
1387
1388 p = info->tmp;
1389 while (prefix_len && *p) { if (*p++ == '\\') prefix_len--; }
1390
1391 if (!*p)
1392 {
1393 if (prefix_len > 1)
1394 {
1395 file_read_error( "Malformed key", info );
1396 return NULL;
1397 }
1398 /* empty key name, return base key */
1399 return (struct key *)grab_object( base );
1400 }
1401 name.str = p;
1402 name.len = len - (p - info->tmp + 1) * sizeof(WCHAR);
1403 return create_key_recursive( base, &name, 0 );
1404 }
1405
1406 /* update the modification time of a key (and its parents) after it has been loaded from a file */
1407 static void update_key_time( struct key *key, timeout_t modif )
1408 {
1409 while (key && !key->modif)
1410 {
1411 key->modif = modif;
1412 key = key->parent;
1413 }
1414 }
1415
1416 /* load a global option from the input file */
1417 static int load_global_option( const char *buffer, struct file_load_info *info )
1418 {
1419 const char *p;
1420
1421 if (!strncmp( buffer, "#arch=", 6 ))
1422 {
1423 enum prefix_type type;
1424 p = buffer + 6;
1425 if (!strcmp( p, "win32" )) type = PREFIX_32BIT;
1426 else if (!strcmp( p, "win64" )) type = PREFIX_64BIT;
1427 else
1428 {
1429 file_read_error( "Unknown architecture", info );
1430 set_error( STATUS_NOT_REGISTRY_FILE );
1431 return 0;
1432 }
1433 if (prefix_type == PREFIX_UNKNOWN) prefix_type = type;
1434 else if (type != prefix_type)
1435 {
1436 file_read_error( "Mismatched architecture", info );
1437 set_error( STATUS_NOT_REGISTRY_FILE );
1438 return 0;
1439 }
1440 }
1441 /* ignore unknown options */
1442 return 1;
1443 }
1444
1445 /* load a key option from the input file */
1446 static int load_key_option( struct key *key, const char *buffer, struct file_load_info *info )
1447 {
1448 const char *p;
1449 data_size_t len;
1450
1451 if (!strncmp( buffer, "#time=", 6 ))
1452 {
1453 timeout_t modif = 0;
1454 for (p = buffer + 6; *p; p++)
1455 {
1456 if (*p >= '0' && *p <= '9') modif = (modif << 4) | (*p - '0');
1457 else if (*p >= 'A' && *p <= 'F') modif = (modif << 4) | (*p - 'A' + 10);
1458 else if (*p >= 'a' && *p <= 'f') modif = (modif << 4) | (*p - 'a' + 10);
1459 else break;
1460 }
1461 update_key_time( key, modif );
1462 }
1463 if (!strncmp( buffer, "#class=", 7 ))
1464 {
1465 p = buffer + 7;
1466 if (*p++ != '"') return 0;
1467 if (!get_file_tmp_space( info, strlen(p) * sizeof(WCHAR) )) return 0;
1468 len = info->tmplen;
1469 if (parse_strW( info->tmp, &len, p, '\"' ) == -1) return 0;
1470 free( key->class );
1471 if (!(key->class = memdup( info->tmp, len ))) len = 0;
1472 key->classlen = len;
1473 }
1474 if (!strncmp( buffer, "#link", 5 )) key->flags |= KEY_SYMLINK;
1475 /* ignore unknown options */
1476 return 1;
1477 }
1478
1479 /* parse a comma-separated list of hex digits */
1480 static int parse_hex( unsigned char *dest, data_size_t *len, const char *buffer )
1481 {
1482 const char *p = buffer;
1483 data_size_t count = 0;
1484 char *end;
1485
1486 while (isxdigit(*p))
1487 {
1488 unsigned int val = strtoul( p, &end, 16 );
1489 if (end == p || val > 0xff) return -1;
1490 if (count++ >= *len) return -1; /* dest buffer overflow */
1491 *dest++ = val;
1492 p = end;
1493 while (isspace(*p)) p++;
1494 if (*p == ',') p++;
1495 while (isspace(*p)) p++;
1496 }
1497 *len = count;
1498 return p - buffer;
1499 }
1500
1501 /* parse a value name and create the corresponding value */
1502 static struct key_value *parse_value_name( struct key *key, const char *buffer, data_size_t *len,
1503 struct file_load_info *info )
1504 {
1505 struct key_value *value;
1506 struct unicode_str name;
1507 int index;
1508
1509 if (!get_file_tmp_space( info, strlen(buffer) * sizeof(WCHAR) )) return NULL;
1510 name.str = info->tmp;
1511 name.len = info->tmplen;
1512 if (buffer[0] == '@')
1513 {
1514 name.len = 0;
1515 *len = 1;
1516 }
1517 else
1518 {
1519 int r = parse_strW( info->tmp, &name.len, buffer + 1, '\"' );
1520 if (r == -1) goto error;
1521 *len = r + 1; /* for initial quote */
1522 name.len -= sizeof(WCHAR); /* terminating null */
1523 }
1524 while (isspace(buffer[*len])) (*len)++;
1525 if (buffer[*len] != '=') goto error;
1526 (*len)++;
1527 while (isspace(buffer[*len])) (*len)++;
1528 if (!(value = find_value( key, &name, &index ))) value = insert_value( key, &name, index );
1529 return value;
1530
1531 error:
1532 file_read_error( "Malformed value name", info );
1533 return NULL;
1534 }
1535
1536 /* load a value from the input file */
1537 static int load_value( struct key *key, const char *buffer, struct file_load_info *info )
1538 {
1539 DWORD dw;
1540 void *ptr, *newptr;
1541 int res, type, parse_type;
1542 data_size_t maxlen, len;
1543 struct key_value *value;
1544
1545 if (!(value = parse_value_name( key, buffer, &len, info ))) return 0;
1546 if (!(res = get_data_type( buffer + len, &type, &parse_type ))) goto error;
1547 buffer += len + res;
1548
1549 switch(parse_type)
1550 {
1551 case REG_SZ:
1552 if (!get_file_tmp_space( info, strlen(buffer) * sizeof(WCHAR) )) return 0;
1553 len = info->tmplen;
1554 if ((res = parse_strW( info->tmp, &len, buffer, '\"' )) == -1) goto error;
1555 ptr = info->tmp;
1556 break;
1557 case REG_DWORD:
1558 dw = strtoul( buffer, NULL, 16 );
1559 ptr = &dw;
1560 len = sizeof(dw);
1561 break;
1562 case REG_BINARY: /* hex digits */
1563 len = 0;
1564 for (;;)
1565 {
1566 maxlen = 1 + strlen(buffer) / 2; /* at least 2 chars for one hex byte */
1567 if (!get_file_tmp_space( info, len + maxlen )) return 0;
1568 if ((res = parse_hex( (unsigned char *)info->tmp + len, &maxlen, buffer )) == -1) goto error;
1569 len += maxlen;
1570 buffer += res;
1571 while (isspace(*buffer)) buffer++;
1572 if (!*buffer) break;
1573 if (*buffer != '\\') goto error;
1574 if (read_next_line( info) != 1) goto error;
1575 buffer = info->buffer;
1576 while (isspace(*buffer)) buffer++;
1577 }
1578 ptr = info->tmp;
1579 break;
1580 default:
1581 assert(0);
1582 ptr = NULL; /* keep compiler quiet */
1583 break;
1584 }
1585
1586 if (!len) newptr = NULL;
1587 else if (!(newptr = memdup( ptr, len ))) return 0;
1588
1589 free( value->data );
1590 value->data = newptr;
1591 value->len = len;
1592 value->type = type;
1593 return 1;
1594
1595 error:
1596 file_read_error( "Malformed value", info );
1597 free( value->data );
1598 value->data = NULL;
1599 value->len = 0;
1600 value->type = REG_NONE;
1601 return 0;
1602 }
1603
1604 /* return the length (in path elements) of name that is part of the key name */
1605 /* for instance if key is USER\foo\bar and name is foo\bar\baz, return 2 */
1606 static int get_prefix_len( struct key *key, const char *name, struct file_load_info *info )
1607 {
1608 WCHAR *p;
1609 int res;
1610 data_size_t len;
1611
1612 if (!get_file_tmp_space( info, strlen(name) * sizeof(WCHAR) )) return 0;
1613
1614 len = info->tmplen;
1615 if ((res = parse_strW( info->tmp, &len, name, ']' )) == -1)
1616 {
1617 file_read_error( "Malformed key", info );
1618 return 0;
1619 }
1620 for (p = info->tmp; *p; p++) if (*p == '\\') break;
1621 len = (p - info->tmp) * sizeof(WCHAR);
1622 for (res = 1; key != root_key; res++)
1623 {
1624 if (len == key->namelen && !memicmp_strW( info->tmp, key->name, len )) break;
1625 key = key->parent;
1626 }
1627 if (key == root_key) res = 0; /* no matching name */
1628 return res;
1629 }
1630
1631 /* load all the keys from the input file */
1632 /* prefix_len is the number of key name prefixes to skip, or -1 for autodetection */
1633 static void load_keys( struct key *key, const char *filename, FILE *f, int prefix_len )
1634 {
1635 struct key *subkey = NULL;
1636 struct file_load_info info;
1637 timeout_t modif = current_time;
1638 char *p;
1639
1640 info.filename = filename;
1641 info.file = f;
1642 info.len = 4;
1643 info.tmplen = 4;
1644 info.line = 0;
1645 if (!(info.buffer = mem_alloc( info.len ))) return;
1646 if (!(info.tmp = mem_alloc( info.tmplen )))
1647 {
1648 free( info.buffer );
1649 return;
1650 }
1651
1652 if ((read_next_line( &info ) != 1) ||
1653 strcmp( info.buffer, "WINE REGISTRY Version 2" ))
1654 {
1655 set_error( STATUS_NOT_REGISTRY_FILE );
1656 goto done;
1657 }
1658
1659 while (read_next_line( &info ) == 1)
1660 {
1661 p = info.buffer;
1662 while (*p && isspace(*p)) p++;
1663 switch(*p)
1664 {
1665 case '[': /* new key */
1666 if (subkey)
1667 {
1668 update_key_time( subkey, modif );
1669 release_object( subkey );
1670 }
1671 if (prefix_len == -1) prefix_len = get_prefix_len( key, p + 1, &info );
1672 if (!(subkey = load_key( key, p + 1, prefix_len, &info, &modif )))
1673 file_read_error( "Error creating key", &info );
1674 break;
1675 case '@': /* default value */
1676 case '\"': /* value */
1677 if (subkey) load_value( subkey, p, &info );
1678 else file_read_error( "Value without key", &info );
1679 break;
1680 case '#': /* option */
1681 if (subkey) load_key_option( subkey, p, &info );
1682 else if (!load_global_option( p, &info )) goto done;
1683 break;
1684 case ';': /* comment */
1685 case 0: /* empty line */
1686 break;
1687 default:
1688 file_read_error( "Unrecognized input", &info );
1689 break;
1690 }
1691 }
1692
1693 done:
1694 if (subkey)
1695 {
1696 update_key_time( subkey, modif );
1697 release_object( subkey );
1698 }
1699 free( info.buffer );
1700 free( info.tmp );
1701 }
1702
1703 /* load a part of the registry from a file */
1704 static void load_registry( struct key *key, obj_handle_t handle )
1705 {
1706 struct file *file;
1707 int fd;
1708
1709 if (!(file = get_file_obj( current->process, handle, FILE_READ_DATA ))) return;
1710 fd = dup( get_file_unix_fd( file ) );
1711 release_object( file );
1712 if (fd != -1)
1713 {
1714 FILE *f = fdopen( fd, "r" );
1715 if (f)
1716 {
1717 load_keys( key, NULL, f, -1 );
1718 fclose( f );
1719 }
1720 else file_set_error();
1721 }
1722 }
1723
1724 /* load one of the initial registry files */
1725 static int load_init_registry_from_file( const char *filename, struct key *key )
1726 {
1727 FILE *f;
1728
1729 if ((f = fopen( filename, "r" )))
1730 {
1731 load_keys( key, filename, f, 0 );
1732 fclose( f );
1733 if (get_error() == STATUS_NOT_REGISTRY_FILE)
1734 {
1735 fprintf( stderr, "%s is not a valid registry file\n", filename );
1736 return 1;
1737 }
1738 }
1739
1740 assert( save_branch_count < MAX_SAVE_BRANCH_INFO );
1741
1742 save_branch_info[save_branch_count].path = filename;
1743 save_branch_info[save_branch_count++].key = (struct key *)grab_object( key );
1744 make_object_permanent( &key->obj );
1745 return (f != NULL);
1746 }
1747
1748 static WCHAR *format_user_registry_path( const SID *sid, struct unicode_str *path )
1749 {
1750 char buffer[7 + 11 + 11 + 11 * SID_MAX_SUB_AUTHORITIES], *p = buffer;
1751 unsigned int i;
1752
1753 p += sprintf( p, "User\\S-%u-%u", sid->Revision,
1754 MAKELONG( MAKEWORD( sid->IdentifierAuthority.Value[5],
1755 sid->IdentifierAuthority.Value[4] ),
1756 MAKEWORD( sid->IdentifierAuthority.Value[3],
1757 sid->IdentifierAuthority.Value[2] )));
1758 for (i = 0; i < sid->SubAuthorityCount; i++) p += sprintf( p, "-%u", sid->SubAuthority[i] );
1759 return ascii_to_unicode_str( buffer, path );
1760 }
1761
1762 /* get the cpu architectures that can be supported in the current prefix */
1763 unsigned int get_prefix_cpu_mask(void)
1764 {
1765 /* Allowed server/client/prefix combinations:
1766 *
1767 * prefix
1768 * 32 64
1769 * server +------+------+ client
1770 * | ok | fail | 32
1771 * 32 +------+------+---
1772 * | fail | fail | 64
1773 * ---+------+------+---
1774 * | ok | ok | 32
1775 * 64 +------+------+---
1776 * | fail | ok | 64
1777 * ---+------+------+---
1778 */
1779 switch (prefix_type)
1780 {
1781 case PREFIX_64BIT:
1782 /* 64-bit prefix requires 64-bit server */
1783 return sizeof(void *) > sizeof(int) ? ~0 : 0;
1784 case PREFIX_32BIT:
1785 default:
1786 return ~CPU_64BIT_MASK; /* only 32-bit cpus supported on 32-bit prefix */
1787 }
1788 }
1789
1790 /* registry initialisation */
1791 void init_registry(void)
1792 {
1793 static const WCHAR HKLM[] = { 'M','a','c','h','i','n','e' };
1794 static const WCHAR HKU_default[] = { 'U','s','e','r','\\','.','D','e','f','a','u','l','t' };
1795 static const WCHAR classes[] = {'S','o','f','t','w','a','r','e','\\',
1796 'C','l','a','s','s','e','s','\\',
1797 'W','o','w','6','4','3','2','N','o','d','e'};
1798 static const struct unicode_str root_name = { NULL, 0 };
1799 static const struct unicode_str HKLM_name = { HKLM, sizeof(HKLM) };
1800 static const struct unicode_str HKU_name = { HKU_default, sizeof(HKU_default) };
1801 static const struct unicode_str classes_name = { classes, sizeof(classes) };
1802
1803 WCHAR *current_user_path;
1804 struct unicode_str current_user_str;
1805 struct key *key, *hklm, *hkcu;
1806 char *p;
1807
1808 /* switch to the config dir */
1809
1810 if (fchdir( config_dir_fd ) == -1) fatal_error( "chdir to config dir: %s\n", strerror( errno ));
1811
1812 /* create the root key */
1813 root_key = alloc_key( &root_name, current_time );
1814 assert( root_key );
1815 make_object_permanent( &root_key->obj );
1816
1817 /* load system.reg into Registry\Machine */
1818
1819 if (!(hklm = create_key_recursive( root_key, &HKLM_name, current_time )))
1820 fatal_error( "could not create Machine registry key\n" );
1821
1822 if (!load_init_registry_from_file( "system.reg", hklm ))
1823 {
1824 if ((p = getenv( "WINEARCH" )) && !strcmp( p, "win32" ))
1825 prefix_type = PREFIX_32BIT;
1826 else
1827 prefix_type = sizeof(void *) > sizeof(int) ? PREFIX_64BIT : PREFIX_32BIT;
1828 }
1829 else if (prefix_type == PREFIX_UNKNOWN)
1830 prefix_type = PREFIX_32BIT;
1831
1832 /* load userdef.reg into Registry\User\.Default */
1833
1834 if (!(key = create_key_recursive( root_key, &HKU_name, current_time )))
1835 fatal_error( "could not create User\\.Default registry key\n" );
1836
1837 load_init_registry_from_file( "userdef.reg", key );
1838 release_object( key );
1839
1840 /* load user.reg into HKEY_CURRENT_USER */
1841
1842 /* FIXME: match default user in token.c. should get from process token instead */
1843 current_user_path = format_user_registry_path( security_local_user_sid, &current_user_str );
1844 if (!current_user_path ||
1845 !(hkcu = create_key_recursive( root_key, &current_user_str, current_time )))
1846 fatal_error( "could not create HKEY_CURRENT_USER registry key\n" );
1847 free( current_user_path );
1848 load_init_registry_from_file( "user.reg", hkcu );
1849
1850 /* set the shared flag on Software\Classes\Wow6432Node */
1851 if (prefix_type == PREFIX_64BIT)
1852 {
1853 if ((key = create_key_recursive( hklm, &classes_name, current_time )))
1854 {
1855 key->flags |= KEY_WOWSHARE;
1856 release_object( key );
1857 }
1858 /* FIXME: handle HKCU too */
1859 }
1860
1861 release_object( hklm );
1862 release_object( hkcu );
1863
1864 /* start the periodic save timer */
1865 set_periodic_save_timer();
1866
1867 /* create windows directories */
1868
1869 if (!mkdir( "drive_c/windows", 0777 ))
1870 {
1871 mkdir( "drive_c/windows/system32", 0777 );
1872 if (prefix_type == PREFIX_64BIT) mkdir( "drive_c/windows/syswow64", 0777 );
1873 }
1874
1875 /* go back to the server dir */
1876 if (fchdir( server_dir_fd ) == -1) fatal_error( "chdir to server dir: %s\n", strerror( errno ));
1877 }
1878
1879 /* save a registry branch to a file */
1880 static void save_all_subkeys( struct key *key, FILE *f )
1881 {
1882 fprintf( f, "WINE REGISTRY Version 2\n" );
1883 fprintf( f, ";; All keys relative to " );
1884 dump_path( key, NULL, f );
1885 fprintf( f, "\n" );
1886 switch (prefix_type)
1887 {
1888 case PREFIX_32BIT:
1889 fprintf( f, "\n#arch=win32\n" );
1890 break;
1891 case PREFIX_64BIT:
1892 fprintf( f, "\n#arch=win64\n" );
1893 break;
1894 default:
1895 break;
1896 }
1897 save_subkeys( key, key, f );
1898 }
1899
1900 /* save a registry branch to a file handle */
1901 static void save_registry( struct key *key, obj_handle_t handle )
1902 {
1903 struct file *file;
1904 int fd;
1905
1906 if (!(file = get_file_obj( current->process, handle, FILE_WRITE_DATA ))) return;
1907 fd = dup( get_file_unix_fd( file ) );
1908 release_object( file );
1909 if (fd != -1)
1910 {
1911 FILE *f = fdopen( fd, "w" );
1912 if (f)
1913 {
1914 save_all_subkeys( key, f );
1915 if (fclose( f )) file_set_error();
1916 }
1917 else
1918 {
1919 file_set_error();
1920 close( fd );
1921 }
1922 }
1923 }
1924
1925 /* save a registry branch to a file */
1926 static int save_branch( struct key *key, const char *path )
1927 {
1928 struct stat st;
1929 char *p, *tmp = NULL;
1930 int fd, count = 0, ret = 0;
1931 FILE *f;
1932
1933 if (!(key->flags & KEY_DIRTY))
1934 {
1935 if (debug_level > 1) dump_operation( key, NULL, "Not saving clean" );
1936 return 1;
1937 }
1938
1939 /* test the file type */
1940
1941 if ((fd = open( path, O_WRONLY )) != -1)
1942 {
1943 /* if file is not a regular file or has multiple links or is accessed
1944 * via symbolic links, write directly into it; otherwise use a temp file */
1945 if (!lstat( path, &st ) && (!S_ISREG(st.st_mode) || st.st_nlink > 1))
1946 {
1947 ftruncate( fd, 0 );
1948 goto save;
1949 }
1950 close( fd );
1951 }
1952
1953 /* create a temp file in the same directory */
1954
1955 if (!(tmp = malloc( strlen(path) + 20 ))) goto done;
1956 strcpy( tmp, path );
1957 if ((p = strrchr( tmp, '/' ))) p++;
1958 else p = tmp;
1959 for (;;)
1960 {
1961 sprintf( p, "reg%lx%04x.tmp", (long) getpid(), count++ );
1962 if ((fd = open( tmp, O_CREAT | O_EXCL | O_WRONLY, 0666 )) != -1) break;
1963 if (errno != EEXIST) goto done;
1964 close( fd );
1965 }
1966
1967 /* now save to it */
1968
1969 save:
1970 if (!(f = fdopen( fd, "w" )))
1971 {
1972 if (tmp) unlink( tmp );
1973 close( fd );
1974 goto done;
1975 }
1976
1977 if (debug_level > 1)
1978 {
1979 fprintf( stderr, "%s: ", path );
1980 dump_operation( key, NULL, "saving" );
1981 }
1982
1983 save_all_subkeys( key, f );
1984 ret = !fclose(f);
1985
1986 if (tmp)
1987 {
1988 /* if successfully written, rename to final name */
1989 if (ret) ret = !rename( tmp, path );
1990 if (!ret) unlink( tmp );
1991 }
1992
1993 done:
1994 free( tmp );
1995 if (ret) make_clean( key );
1996 return ret;
1997 }
1998
1999 /* periodic saving of the registry */
2000 static void periodic_save( void *arg )
2001 {
2002 int i;
2003
2004 if (fchdir( config_dir_fd ) == -1) return;
2005 save_timeout_user = NULL;
2006 for (i = 0; i < save_branch_count; i++)
2007 save_branch( save_branch_info[i].key, save_branch_info[i].path );
2008 if (fchdir( server_dir_fd ) == -1) fatal_error( "chdir to server dir: %s\n", strerror( errno ));
2009 set_periodic_save_timer();
2010 }
2011
2012 /* start the periodic save timer */
2013 static void set_periodic_save_timer(void)
2014 {
2015 if (save_timeout_user) remove_timeout_user( save_timeout_user );
2016 save_timeout_user = add_timeout_user( save_period, periodic_save, NULL );
2017 }
2018
2019 /* save the modified registry branches to disk */
2020 void flush_registry(void)
2021 {
2022 int i;
2023
2024 if (fchdir( config_dir_fd ) == -1) return;
2025 for (i = 0; i < save_branch_count; i++)
2026 {
2027 if (!save_branch( save_branch_info[i].key, save_branch_info[i].path ))
2028 {
2029 fprintf( stderr, "wineserver: could not save registry branch to %s",
2030 save_branch_info[i].path );
2031 perror( " " );
2032 }
2033 }
2034 if (fchdir( server_dir_fd ) == -1) fatal_error( "chdir to server dir: %s\n", strerror( errno ));
2035 }
2036
2037 /* determine if the thread is wow64 (32-bit client running on 64-bit prefix) */
2038 static int is_wow64_thread( struct thread *thread )
2039 {
2040 return (prefix_type == PREFIX_64BIT && !(CPU_FLAG(thread->process->cpu) & CPU_64BIT_MASK));
2041 }
2042
2043
2044 /* create a registry key */
2045 DECL_HANDLER(create_key)
2046 {
2047 struct key *key = NULL, *parent;
2048 struct unicode_str name, class;
2049 unsigned int access = req->access;
2050 const struct security_descriptor *sd;
2051 const struct object_attributes *objattr = get_req_object_attributes( &sd, &name, NULL );
2052
2053 if (!objattr) return;
2054
2055 if (!is_wow64_thread( current )) access = (access & ~KEY_WOW64_32KEY) | KEY_WOW64_64KEY;
2056
2057 class.str = get_req_data_after_objattr( objattr, &class.len );
2058 class.len = (class.len / sizeof(WCHAR)) * sizeof(WCHAR);
2059
2060 if (!objattr->rootdir && name.len >= sizeof(root_name) &&
2061 !memicmp_strW( name.str, root_name, sizeof(root_name) ))
2062 {
2063 name.str += ARRAY_SIZE( root_name );
2064 name.len -= sizeof(root_name);
2065 }
2066
2067 /* NOTE: no access rights are required from the parent handle to create a key */
2068 if ((parent = get_parent_hkey_obj( objattr->rootdir )))
2069 {
2070 if ((key = create_key( parent, &name, &class, req->options, access,
2071 objattr->attributes, sd, &reply->created )))
2072 {
2073 reply->hkey = alloc_handle( current->process, key, access, objattr->attributes );
2074 release_object( key );
2075 }
2076 release_object( parent );
2077 }
2078 }
2079
2080 /* open a registry key */
2081 DECL_HANDLER(open_key)
2082 {
2083 struct key *key, *parent;
2084 struct unicode_str name;
2085 unsigned int access = req->access;
2086
2087 if (!is_wow64_thread( current )) access = (access & ~KEY_WOW64_32KEY) | KEY_WOW64_64KEY;
2088
2089 reply->hkey = 0;
2090 /* NOTE: no access rights are required to open the parent key, only the child key */
2091 if ((parent = get_parent_hkey_obj( req->parent )))
2092 {
2093 get_req_path( &name, !req->parent );
2094 if ((key = open_key( parent, &name, access, req->attributes )))
2095 {
2096 reply->hkey = alloc_handle( current->process, key, access, req->attributes );
2097 release_object( key );
2098 }
2099 release_object( parent );
2100 }
2101 }
2102
2103 /* delete a registry key */
2104 DECL_HANDLER(delete_key)
2105 {
2106 struct key *key;
2107
2108 if ((key = get_hkey_obj( req->hkey, DELETE )))
2109 {
2110 delete_key( key, 0);
2111 release_object( key );
2112 }
2113 }
2114
2115 /* flush a registry key */
2116 DECL_HANDLER(flush_key)
2117 {
2118 struct key *key = get_hkey_obj( req->hkey, 0 );
2119 if (key)
2120 {
2121 /* we don't need to do anything here with the current implementation */
2122 release_object( key );
2123 }
2124 }
2125
2126 /* enumerate registry subkeys */
2127 DECL_HANDLER(enum_key)
2128 {
2129 struct key *key;
2130
2131 if ((key = get_hkey_obj( req->hkey,
2132 req->index == -1 ? KEY_QUERY_VALUE : KEY_ENUMERATE_SUB_KEYS )))
2133 {
2134 enum_key( key, req->index, req->info_class, reply );
2135 release_object( key );
2136 }
2137 }
2138
2139 /* set a value of a registry key */
2140 DECL_HANDLER(set_key_value)
2141 {
2142 struct key *key;
2143 struct unicode_str name;
2144
2145 if (req->namelen > get_req_data_size())
2146 {
2147 set_error( STATUS_INVALID_PARAMETER );
2148 return;
2149 }
2150 name.str = get_req_data();
2151 name.len = (req->namelen / sizeof(WCHAR)) * sizeof(WCHAR);
2152
2153 if ((key = get_hkey_obj( req->hkey, KEY_SET_VALUE )))
2154 {
2155 data_size_t datalen = get_req_data_size() - req->namelen;
2156 const char *data = (const char *)get_req_data() + req->namelen;
2157
2158 set_value( key, &name, req->type, data, datalen );
2159 release_object( key );
2160 }
2161 }
2162
2163 /* retrieve the value of a registry key */
2164 DECL_HANDLER(get_key_value)
2165 {
2166 struct key *key;
2167 struct unicode_str name = get_req_unicode_str();
2168
2169 reply->total = 0;
2170 if ((key = get_hkey_obj( req->hkey, KEY_QUERY_VALUE )))
2171 {
2172 get_value( key, &name, &reply->type, &reply->total );
2173 release_object( key );
2174 }
2175 }
2176
2177 /* enumerate the value of a registry key */
2178 DECL_HANDLER(enum_key_value)
2179 {
2180 struct key *key;
2181
2182 if ((key = get_hkey_obj( req->hkey, KEY_QUERY_VALUE )))
2183 {
2184 enum_value( key, req->index, req->info_class, reply );
2185 release_object( key );
2186 }
2187 }
2188
2189 /* delete a value of a registry key */
2190 DECL_HANDLER(delete_key_value)
2191 {
2192 struct key *key;
2193 struct unicode_str name = get_req_unicode_str();
2194
2195 if ((key = get_hkey_obj( req->hkey, KEY_SET_VALUE )))
2196 {
2197 delete_value( key, &name );
2198 release_object( key );
2199 }
2200 }
2201
2202 /* load a registry branch from a file */
2203 DECL_HANDLER(load_registry)
2204 {
2205 struct key *key, *parent;
2206 struct unicode_str name;
2207 const struct security_descriptor *sd;
2208 const struct object_attributes *objattr = get_req_object_attributes( &sd, &name, NULL );
2209
2210 if (!objattr) return;
2211
2212 if (!thread_single_check_privilege( current, &SeRestorePrivilege ))
2213 {
2214 set_error( STATUS_PRIVILEGE_NOT_HELD );
2215 return;
2216 }
2217
2218 if (!objattr->rootdir && name.len >= sizeof(root_name) &&
2219 !memicmp_strW( name.str, root_name, sizeof(root_name) ))
2220 {
2221 name.str += ARRAY_SIZE( root_name );
2222 name.len -= sizeof(root_name);
2223 }
2224
2225 if ((parent = get_parent_hkey_obj( objattr->rootdir )))
2226 {
2227 int dummy;
2228 if ((key = create_key( parent, &name, NULL, 0, KEY_WOW64_64KEY, 0, sd, &dummy )))
2229 {
2230 load_registry( key, req->file );
2231 release_object( key );
2232 }
2233 release_object( parent );
2234 }
2235 }
2236
2237 DECL_HANDLER(unload_registry)
2238 {
2239 struct key *key;
2240
2241 if (!thread_single_check_privilege( current, &SeRestorePrivilege ))
2242 {
2243 set_error( STATUS_PRIVILEGE_NOT_HELD );
2244 return;
2245 }
2246
2247 if ((key = get_hkey_obj( req->hkey, 0 )))
2248 {
2249 delete_key( key, 1 ); /* FIXME */
2250 release_object( key );
2251 }
2252 }
2253
2254 /* save a registry branch to a file */
2255 DECL_HANDLER(save_registry)
2256 {
2257 struct key *key;
2258
2259 if (!thread_single_check_privilege( current, &SeBackupPrivilege ))
2260 {
2261 set_error( STATUS_PRIVILEGE_NOT_HELD );
2262 return;
2263 }
2264
2265 if ((key = get_hkey_obj( req->hkey, 0 )))
2266 {
2267 save_registry( key, req->file );
2268 release_object( key );
2269 }
2270 }
2271
2272 /* add a registry key change notification */
2273 DECL_HANDLER(set_registry_notification)
2274 {
2275 struct key *key;
2276 struct event *event;
2277 struct notify *notify;
2278
2279 key = get_hkey_obj( req->hkey, KEY_NOTIFY );
2280 if (key)
2281 {
2282 event = get_event_obj( current->process, req->event, SYNCHRONIZE );
2283 if (event)
2284 {
2285 notify = find_notify( key, current->process, req->hkey );
2286 if (notify)
2287 {
2288 if (notify->event)
2289 release_object( notify->event );
2290 grab_object( event );
2291 notify->event = event;
2292 }
2293 else
2294 {
2295 notify = mem_alloc( sizeof(*notify) );
2296 if (notify)
2297 {
2298 grab_object( event );
2299 notify->event = event;
2300 notify->subtree = req->subtree;
2301 notify->filter = req->filter;
2302 notify->hkey = req->hkey;
2303 notify->process = current->process;
2304 list_add_head( &key->notify_list, &notify->entry );
2305 }
2306 }
2307 if (notify)
2308 {
2309 reset_event( event );
2310 set_error( STATUS_PENDING );
2311 }
2312 release_object( event );
2313 }
2314 release_object( key );
2315 }
2316 }
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