1764 lines
50 KiB
C
1764 lines
50 KiB
C
/*
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* Server-side registry management
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*
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* Copyright (C) 1999 Alexandre Julliard
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*/
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/* To do:
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* - behavior with deleted keys
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* - values larger than request buffer
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* - symbolic links
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*/
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <pwd.h>
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#include "object.h"
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#include "handle.h"
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#include "request.h"
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#include "unicode.h"
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#include "winbase.h"
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#include "winreg.h"
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#include "winnt.h" /* registry definitions */
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/* a registry key */
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struct key
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{
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struct object obj; /* object header */
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WCHAR *name; /* key name */
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WCHAR *class; /* key class */
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struct key *parent; /* parent key */
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int last_subkey; /* last in use subkey */
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int nb_subkeys; /* count of allocated subkeys */
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struct key **subkeys; /* subkeys array */
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int last_value; /* last in use value */
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int nb_values; /* count of allocated values in array */
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struct key_value *values; /* values array */
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short flags; /* flags */
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short level; /* saving level */
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time_t modif; /* last modification time */
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};
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/* key flags */
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#define KEY_VOLATILE 0x0001 /* key is volatile (not saved to disk) */
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#define KEY_DELETED 0x0002 /* key has been deleted */
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#define KEY_ROOT 0x0004 /* key is a root key */
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/* a key value */
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struct key_value
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{
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WCHAR *name; /* value name */
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int type; /* value type */
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size_t len; /* value data length in bytes */
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void *data; /* pointer to value data */
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};
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#define MIN_SUBKEYS 8 /* min. number of allocated subkeys per key */
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#define MIN_VALUES 8 /* min. number of allocated values per key */
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/* the special root keys */
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#define HKEY_SPECIAL_ROOT_FIRST HKEY_CLASSES_ROOT
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#define HKEY_SPECIAL_ROOT_LAST HKEY_DYN_DATA
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#define NB_SPECIAL_ROOT_KEYS (HKEY_SPECIAL_ROOT_LAST - HKEY_SPECIAL_ROOT_FIRST + 1)
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#define IS_SPECIAL_ROOT_HKEY(h) (((h) >= HKEY_SPECIAL_ROOT_FIRST) && ((h) <= HKEY_SPECIAL_ROOT_LAST))
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static struct key *special_root_keys[NB_SPECIAL_ROOT_KEYS];
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/* the real root key */
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static struct key *root_key;
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/* the special root key names */
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static const char * const special_root_names[NB_SPECIAL_ROOT_KEYS] =
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{
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"Machine\\Software\\Classes", /* HKEY_CLASSES_ROOT */
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"User\\", /* we append the user name dynamically */ /* HKEY_CURRENT_USER */
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"Machine", /* HKEY_LOCAL_MACHINE */
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"User", /* HKEY_USERS */
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"PerfData", /* HKEY_PERFORMANCE_DATA */
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"Machine\\System\\CurrentControlSet\\HardwareProfiles\\Current", /* HKEY_CURRENT_CONFIG */
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"DynData" /* HKEY_DYN_DATA */
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};
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/* keys saving level */
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/* current_level is the level that is put into all newly created or modified keys */
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/* saving_level is the minimum level that a key needs in order to get saved */
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static int current_level;
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static int saving_level;
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static struct timeval next_save_time; /* absolute time of next periodic save */
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static int save_period; /* delay between periodic saves (ms) */
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static struct timeout_user *save_timeout_user; /* saving timer */
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/* information about where to save a registry branch */
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struct save_branch_info
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{
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struct key *key;
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char *path;
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};
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#define MAX_SAVE_BRANCH_INFO 8
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static int save_branch_count;
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static struct save_branch_info save_branch_info[MAX_SAVE_BRANCH_INFO];
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/* information about a file being loaded */
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struct file_load_info
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{
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FILE *file; /* input file */
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char *buffer; /* line buffer */
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int len; /* buffer length */
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int line; /* current input line */
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char *tmp; /* temp buffer to use while parsing input */
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int tmplen; /* length of temp buffer */
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};
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static void key_dump( struct object *obj, int verbose );
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static void key_destroy( struct object *obj );
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static const struct object_ops key_ops =
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{
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sizeof(struct key), /* size */
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key_dump, /* dump */
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no_add_queue, /* add_queue */
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NULL, /* remove_queue */
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NULL, /* signaled */
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NULL, /* satisfied */
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NULL, /* get_poll_events */
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NULL, /* poll_event */
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no_read_fd, /* get_read_fd */
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no_write_fd, /* get_write_fd */
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no_flush, /* flush */
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no_get_file_info, /* get_file_info */
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key_destroy /* destroy */
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};
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/*
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* The registry text file format v2 used by this code is similar to the one
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* used by REGEDIT import/export functionality, with the following differences:
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* - strings and key names can contain \x escapes for Unicode
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* - key names use escapes too in order to support Unicode
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* - the modification time optionally follows the key name
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* - REG_EXPAND_SZ and REG_MULTI_SZ are saved as strings instead of hex
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*/
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static inline char to_hex( char ch )
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{
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if (isdigit(ch)) return ch - '0';
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return tolower(ch) - 'a' + 10;
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}
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/* dump the full path of a key */
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static void dump_path( struct key *key, struct key *base, FILE *f )
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{
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if (key->parent && key->parent != base)
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{
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dump_path( key->parent, base, f );
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fprintf( f, "\\\\" );
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}
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dump_strW( key->name, strlenW(key->name), f, "[]" );
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}
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/* dump a value to a text file */
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static void dump_value( struct key_value *value, FILE *f )
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{
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int i, count;
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if (value->name[0])
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{
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fputc( '\"', f );
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count = 1 + dump_strW( value->name, strlenW(value->name), f, "\"\"" );
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count += fprintf( f, "\"=" );
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}
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else count = fprintf( f, "@=" );
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switch(value->type)
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{
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case REG_SZ:
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case REG_EXPAND_SZ:
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case REG_MULTI_SZ:
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if (value->type != REG_SZ) fprintf( f, "str(%d):", value->type );
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fputc( '\"', f );
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if (value->data) dump_strW( (WCHAR *)value->data, value->len / sizeof(WCHAR), f, "\"\"" );
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fputc( '\"', f );
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break;
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case REG_DWORD:
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if (value->len == sizeof(DWORD))
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{
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DWORD dw;
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memcpy( &dw, value->data, sizeof(DWORD) );
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fprintf( f, "dword:%08lx", dw );
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break;
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}
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/* else fall through */
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default:
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if (value->type == REG_BINARY) count += fprintf( f, "hex:" );
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else count += fprintf( f, "hex(%x):", value->type );
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for (i = 0; i < value->len; i++)
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{
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count += fprintf( f, "%02x", *((unsigned char *)value->data + i) );
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if (i < value->len-1)
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{
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fputc( ',', f );
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if (++count > 76)
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{
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fprintf( f, "\\\n " );
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count = 2;
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}
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}
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}
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break;
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}
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fputc( '\n', f );
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}
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/* save a registry and all its subkeys to a text file */
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static void save_subkeys( struct key *key, struct key *base, FILE *f )
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{
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int i;
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if (key->flags & KEY_VOLATILE) return;
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/* save key if it has the proper level, and has either some values or no subkeys */
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/* keys with no values but subkeys are saved implicitly by saving the subkeys */
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if ((key->level >= saving_level) && ((key->last_value >= 0) || (key->last_subkey == -1)))
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{
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fprintf( f, "\n[" );
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if (key != base) dump_path( key, base, f );
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fprintf( f, "] %ld\n", key->modif );
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for (i = 0; i <= key->last_value; i++) dump_value( &key->values[i], f );
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}
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for (i = 0; i <= key->last_subkey; i++) save_subkeys( key->subkeys[i], base, f );
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}
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static void dump_operation( struct key *key, struct key_value *value, const char *op )
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{
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fprintf( stderr, "%s key ", op );
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if (key) dump_path( key, NULL, stderr );
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else fprintf( stderr, "ERROR" );
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if (value)
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{
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fprintf( stderr, " value ");
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dump_value( value, stderr );
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}
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else fprintf( stderr, "\n" );
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}
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static void key_dump( struct object *obj, int verbose )
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{
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struct key *key = (struct key *)obj;
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assert( obj->ops == &key_ops );
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fprintf( stderr, "Key flags=%x ", key->flags );
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dump_path( key, NULL, stderr );
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fprintf( stderr, "\n" );
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}
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static void key_destroy( struct object *obj )
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{
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int i;
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struct key *key = (struct key *)obj;
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assert( obj->ops == &key_ops );
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if (key->name) free( key->name );
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if (key->class) free( key->class );
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for (i = 0; i <= key->last_value; i++)
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{
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free( key->values[i].name );
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if (key->values[i].data) free( key->values[i].data );
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}
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for (i = 0; i <= key->last_subkey; i++)
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{
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key->subkeys[i]->parent = NULL;
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release_object( key->subkeys[i] );
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}
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}
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/* duplicate a key path from the request buffer */
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/* returns a pointer to a static buffer, so only useable once per request */
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static WCHAR *copy_path( const WCHAR *path, size_t len )
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{
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static WCHAR buffer[MAX_PATH+1];
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if (len > sizeof(buffer)-sizeof(buffer[0]))
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{
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set_error( STATUS_BUFFER_OVERFLOW );
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return NULL;
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}
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memcpy( buffer, path, len );
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buffer[len / sizeof(WCHAR)] = 0;
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return buffer;
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}
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/* copy a path from the request buffer, in cases where the length is stored in front of the path */
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static WCHAR *copy_req_path( void *req, size_t *len )
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{
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const WCHAR *name_ptr = get_req_data(req);
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if ((*len = sizeof(WCHAR) + *name_ptr++) > get_req_data_size(req))
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{
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fatal_protocol_error( current, "copy_req_path: invalid length %d/%d\n",
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*len, get_req_data_size(req) );
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return NULL;
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}
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return copy_path( name_ptr, *len - sizeof(WCHAR) );
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}
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/* return the next token in a given path */
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/* returns a pointer to a static buffer, so only useable once per request */
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static WCHAR *get_path_token( WCHAR *initpath )
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{
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static WCHAR *path;
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WCHAR *ret;
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if (initpath)
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{
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/* path cannot start with a backslash */
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if (*initpath == '\\')
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{
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set_error( STATUS_OBJECT_PATH_INVALID );
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return NULL;
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}
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path = initpath;
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}
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else while (*path == '\\') path++;
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ret = path;
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while (*path && *path != '\\') path++;
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if (*path) *path++ = 0;
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return ret;
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}
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/* duplicate a Unicode string from the request buffer */
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static WCHAR *req_strdupW( const void *req, const WCHAR *str, size_t len )
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{
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WCHAR *name;
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if ((name = mem_alloc( len + sizeof(WCHAR) )) != NULL)
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{
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memcpy( name, str, len );
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name[len / sizeof(WCHAR)] = 0;
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}
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return name;
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}
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/* allocate a key object */
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static struct key *alloc_key( const WCHAR *name, time_t modif )
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{
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struct key *key;
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if ((key = (struct key *)alloc_object( &key_ops, -1 )))
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{
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key->class = NULL;
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key->flags = 0;
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key->last_subkey = -1;
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key->nb_subkeys = 0;
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key->subkeys = NULL;
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key->nb_values = 0;
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key->last_value = -1;
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key->values = NULL;
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key->level = current_level;
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key->modif = modif;
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key->parent = NULL;
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if (!(key->name = strdupW( name )))
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{
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release_object( key );
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key = NULL;
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}
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}
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return key;
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}
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/* update key modification time */
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static void touch_key( struct key *key )
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{
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key->modif = time(NULL);
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key->level = max( key->level, current_level );
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}
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/* try to grow the array of subkeys; return 1 if OK, 0 on error */
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static int grow_subkeys( struct key *key )
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{
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struct key **new_subkeys;
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int nb_subkeys;
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if (key->nb_subkeys)
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{
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nb_subkeys = key->nb_subkeys + (key->nb_subkeys / 2); /* grow by 50% */
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if (!(new_subkeys = realloc( key->subkeys, nb_subkeys * sizeof(*new_subkeys) )))
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{
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set_error( STATUS_NO_MEMORY );
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return 0;
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}
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}
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else
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{
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nb_subkeys = MIN_VALUES;
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if (!(new_subkeys = mem_alloc( nb_subkeys * sizeof(*new_subkeys) ))) return 0;
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}
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key->subkeys = new_subkeys;
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key->nb_subkeys = nb_subkeys;
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return 1;
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}
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/* allocate a subkey for a given key, and return its index */
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static struct key *alloc_subkey( struct key *parent, const WCHAR *name, int index, time_t modif )
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{
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struct key *key;
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int i;
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if (parent->last_subkey + 1 == parent->nb_subkeys)
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{
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/* need to grow the array */
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if (!grow_subkeys( parent )) return NULL;
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}
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if ((key = alloc_key( name, modif )) != NULL)
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{
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key->parent = parent;
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for (i = ++parent->last_subkey; i > index; i--)
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parent->subkeys[i] = parent->subkeys[i-1];
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parent->subkeys[index] = key;
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}
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return key;
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}
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/* free a subkey of a given key */
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static void free_subkey( struct key *parent, int index )
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{
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struct key *key;
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int i, nb_subkeys;
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assert( index >= 0 );
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assert( index <= parent->last_subkey );
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key = parent->subkeys[index];
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for (i = index; i < parent->last_subkey; i++) parent->subkeys[i] = parent->subkeys[i + 1];
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parent->last_subkey--;
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key->flags |= KEY_DELETED;
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key->parent = NULL;
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release_object( key );
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/* try to shrink the array */
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nb_subkeys = key->nb_subkeys;
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if (nb_subkeys > MIN_SUBKEYS && key->last_subkey < nb_subkeys / 2)
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{
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struct key **new_subkeys;
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nb_subkeys -= nb_subkeys / 3; /* shrink by 33% */
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if (nb_subkeys < MIN_SUBKEYS) nb_subkeys = MIN_SUBKEYS;
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if (!(new_subkeys = realloc( key->subkeys, nb_subkeys * sizeof(*new_subkeys) ))) return;
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key->subkeys = new_subkeys;
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key->nb_subkeys = nb_subkeys;
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}
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}
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/* find the named child of a given key and return its index */
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static struct key *find_subkey( struct key *key, const WCHAR *name, int *index )
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{
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int i, min, max, res;
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min = 0;
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max = key->last_subkey;
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while (min <= max)
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{
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i = (min + max) / 2;
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if (!(res = strcmpiW( key->subkeys[i]->name, name )))
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{
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*index = i;
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return key->subkeys[i];
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}
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if (res > 0) max = i - 1;
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else min = i + 1;
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}
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*index = min; /* this is where we should insert it */
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return NULL;
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}
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/* open a subkey */
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/* warning: the key name must be writeable (use copy_path) */
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static struct key *open_key( struct key *key, WCHAR *name )
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{
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int index;
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WCHAR *path;
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if (!(path = get_path_token( name ))) return NULL;
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while (*path)
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{
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if (!(key = find_subkey( key, path, &index )))
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{
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set_error( STATUS_OBJECT_NAME_NOT_FOUND );
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break;
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}
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path = get_path_token( NULL );
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}
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if (debug_level > 1) dump_operation( key, NULL, "Open" );
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if (key) grab_object( key );
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return key;
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}
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/* create a subkey */
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/* warning: the key name must be writeable (use copy_path) */
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static struct key *create_key( struct key *key, WCHAR *name, WCHAR *class,
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unsigned int options, time_t modif, int *created )
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{
|
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struct key *base;
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int base_idx, index, flags = 0;
|
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WCHAR *path;
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|
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if (key->flags & KEY_DELETED) /* we cannot create a subkey under a deleted key */
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{
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set_error( STATUS_KEY_DELETED );
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return NULL;
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}
|
|
if (options & REG_OPTION_VOLATILE) flags |= KEY_VOLATILE;
|
|
else if (key->flags & KEY_VOLATILE)
|
|
{
|
|
set_error( STATUS_CHILD_MUST_BE_VOLATILE );
|
|
return NULL;
|
|
}
|
|
if (!modif) modif = time(NULL);
|
|
|
|
if (!(path = get_path_token( name ))) return NULL;
|
|
*created = 0;
|
|
while (*path)
|
|
{
|
|
struct key *subkey;
|
|
if (!(subkey = find_subkey( key, path, &index ))) break;
|
|
key = subkey;
|
|
path = get_path_token( NULL );
|
|
}
|
|
|
|
/* create the remaining part */
|
|
|
|
if (!*path) goto done;
|
|
*created = 1;
|
|
base = key;
|
|
base_idx = index;
|
|
key = alloc_subkey( key, path, index, modif );
|
|
while (key)
|
|
{
|
|
key->flags |= flags;
|
|
path = get_path_token( NULL );
|
|
if (!*path) goto done;
|
|
/* we know the index is always 0 in a new key */
|
|
key = alloc_subkey( key, path, 0, modif );
|
|
}
|
|
if (base_idx != -1) free_subkey( base, base_idx );
|
|
return NULL;
|
|
|
|
done:
|
|
if (debug_level > 1) dump_operation( key, NULL, "Create" );
|
|
if (class) key->class = strdupW(class);
|
|
grab_object( key );
|
|
return key;
|
|
}
|
|
|
|
/* query information about a key or a subkey */
|
|
static size_t enum_key( struct key *key, int index, struct enum_key_request *req )
|
|
{
|
|
int i;
|
|
size_t len, namelen, classlen;
|
|
int max_subkey = 0, max_class = 0;
|
|
int max_value = 0, max_data = 0;
|
|
WCHAR *data = get_req_data(req);
|
|
|
|
if (index != -1) /* -1 means use the specified key directly */
|
|
{
|
|
if ((index < 0) || (index > key->last_subkey))
|
|
{
|
|
set_error( STATUS_NO_MORE_ENTRIES );
|
|
return 0;
|
|
}
|
|
key = key->subkeys[index];
|
|
}
|
|
|
|
if (req->full)
|
|
{
|
|
for (i = 0; i <= key->last_subkey; i++)
|
|
{
|
|
struct key *subkey = key->subkeys[i];
|
|
len = strlenW( subkey->name );
|
|
if (len > max_subkey) max_subkey = len;
|
|
if (!subkey->class) continue;
|
|
len = strlenW( subkey->class );
|
|
if (len > max_class) max_class = len;
|
|
}
|
|
for (i = 0; i <= key->last_value; i++)
|
|
{
|
|
len = strlenW( key->values[i].name );
|
|
if (len > max_value) max_value = len;
|
|
len = key->values[i].len;
|
|
if (len > max_data) max_data = len;
|
|
}
|
|
req->max_subkey = max_subkey;
|
|
req->max_class = max_class;
|
|
req->max_value = max_value;
|
|
req->max_data = max_data;
|
|
}
|
|
else
|
|
{
|
|
req->max_subkey = 0;
|
|
req->max_class = 0;
|
|
req->max_value = 0;
|
|
req->max_data = 0;
|
|
}
|
|
req->subkeys = key->last_subkey + 1;
|
|
req->values = key->last_value + 1;
|
|
req->modif = key->modif;
|
|
|
|
namelen = strlenW(key->name) * sizeof(WCHAR);
|
|
classlen = key->class ? strlenW(key->class) * sizeof(WCHAR) : 0;
|
|
|
|
len = namelen + classlen + sizeof(WCHAR);
|
|
if (len > get_req_data_size(req))
|
|
{
|
|
len = get_req_data_size(req);
|
|
if (len < sizeof(WCHAR)) return 0;
|
|
}
|
|
|
|
*data++ = namelen;
|
|
len -= sizeof(WCHAR);
|
|
if (len > namelen)
|
|
{
|
|
memcpy( data, key->name, namelen );
|
|
memcpy( (char *)data + namelen, key->class, min(classlen,len-namelen) );
|
|
}
|
|
else memcpy( data, key->name, len );
|
|
|
|
if (debug_level > 1) dump_operation( key, NULL, "Enum" );
|
|
return len + sizeof(WCHAR);
|
|
}
|
|
|
|
/* delete a key and its values */
|
|
static void delete_key( struct key *key )
|
|
{
|
|
int index;
|
|
struct key *parent;
|
|
|
|
/* must find parent and index */
|
|
if (key->flags & KEY_ROOT)
|
|
{
|
|
set_error( STATUS_ACCESS_DENIED );
|
|
return;
|
|
}
|
|
if (!(parent = key->parent) || (key->flags & KEY_DELETED))
|
|
{
|
|
set_error( STATUS_KEY_DELETED );
|
|
return;
|
|
}
|
|
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 (FIXME) */
|
|
if ((key->flags & KEY_ROOT) || (key->last_subkey >= 0))
|
|
{
|
|
set_error( STATUS_ACCESS_DENIED );
|
|
return;
|
|
}
|
|
if (debug_level > 1) dump_operation( key, NULL, "Delete" );
|
|
free_subkey( parent, index );
|
|
touch_key( parent );
|
|
}
|
|
|
|
/* 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 WCHAR *name, int *index )
|
|
{
|
|
int i, min, max, res;
|
|
|
|
min = 0;
|
|
max = key->last_value;
|
|
while (min <= max)
|
|
{
|
|
i = (min + max) / 2;
|
|
if (!(res = strcmpiW( key->values[i].name, name )))
|
|
{
|
|
*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 or return a pointer to an existing one */
|
|
static struct key_value *insert_value( struct key *key, const WCHAR *name )
|
|
{
|
|
struct key_value *value;
|
|
WCHAR *new_name;
|
|
int i, index;
|
|
|
|
if (!(value = find_value( key, name, &index )))
|
|
{
|
|
/* not found, add it */
|
|
if (key->last_value + 1 == key->nb_values)
|
|
{
|
|
if (!grow_values( key )) return NULL;
|
|
}
|
|
if (!(new_name = strdupW(name))) 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->len = 0;
|
|
value->data = NULL;
|
|
}
|
|
return value;
|
|
}
|
|
|
|
/* set a key value */
|
|
static void set_value( struct key *key, WCHAR *name, int type, unsigned int total_len,
|
|
unsigned int offset, unsigned int data_len, const void *data )
|
|
{
|
|
struct key_value *value;
|
|
void *ptr = NULL;
|
|
|
|
if (data_len + offset > total_len)
|
|
{
|
|
set_error( STATUS_INVALID_PARAMETER );
|
|
return;
|
|
}
|
|
|
|
if (offset) /* adding data to an existing value */
|
|
{
|
|
int index;
|
|
if (!(value = find_value( key, name, &index )))
|
|
{
|
|
set_error( STATUS_OBJECT_NAME_NOT_FOUND );
|
|
return;
|
|
}
|
|
if (value->len != total_len)
|
|
{
|
|
set_error( STATUS_INVALID_PARAMETER );
|
|
return;
|
|
}
|
|
memcpy( (char *)value->data + offset, data, data_len );
|
|
if (debug_level > 1) dump_operation( key, value, "Set" );
|
|
return;
|
|
}
|
|
|
|
/* first copy the data */
|
|
if (total_len)
|
|
{
|
|
if (!(ptr = mem_alloc( total_len ))) return;
|
|
memcpy( ptr, data, data_len );
|
|
if (data_len < total_len) memset( (char *)ptr + data_len, 0, total_len - data_len );
|
|
}
|
|
|
|
if (!(value = insert_value( key, name )))
|
|
{
|
|
if (ptr) free( ptr );
|
|
return;
|
|
}
|
|
if (value->data) free( value->data ); /* already existing, free previous data */
|
|
value->type = type;
|
|
value->len = total_len;
|
|
value->data = ptr;
|
|
touch_key( key );
|
|
if (debug_level > 1) dump_operation( key, value, "Set" );
|
|
}
|
|
|
|
/* get a key value */
|
|
static size_t get_value( struct key *key, WCHAR *name, unsigned int offset,
|
|
unsigned int maxlen, int *type, int *len, void *data )
|
|
{
|
|
struct key_value *value;
|
|
int index;
|
|
size_t ret = 0;
|
|
|
|
if ((value = find_value( key, name, &index )))
|
|
{
|
|
*type = value->type;
|
|
*len = value->len;
|
|
if (value->data && offset < value->len)
|
|
{
|
|
if (maxlen > value->len - offset) maxlen = value->len - offset;
|
|
memcpy( data, (char *)value->data + offset, maxlen );
|
|
ret = maxlen;
|
|
}
|
|
if (debug_level > 1) dump_operation( key, value, "Get" );
|
|
}
|
|
else
|
|
{
|
|
*type = -1;
|
|
set_error( STATUS_OBJECT_NAME_NOT_FOUND );
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* enumerate a key value */
|
|
static void enum_value( struct key *key, int i, WCHAR *name, unsigned int offset,
|
|
unsigned int maxlen, int *type, int *len, void *data )
|
|
{
|
|
struct key_value *value;
|
|
|
|
if (i < 0 || i > key->last_value) set_error( STATUS_NO_MORE_ENTRIES );
|
|
else
|
|
{
|
|
value = &key->values[i];
|
|
strcpyW( name, value->name );
|
|
*type = value->type;
|
|
*len = value->len;
|
|
if (value->data && offset < value->len)
|
|
{
|
|
if (maxlen > value->len - offset) maxlen = value->len - offset;
|
|
memcpy( data, (char *)value->data + offset, maxlen );
|
|
}
|
|
if (debug_level > 1) dump_operation( key, value, "Enum" );
|
|
}
|
|
}
|
|
|
|
/* delete a value */
|
|
static void delete_value( struct key *key, const WCHAR *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" );
|
|
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 );
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
|
|
static struct key *create_root_key( int hkey )
|
|
{
|
|
WCHAR keyname[80];
|
|
int i, dummy;
|
|
struct key *key;
|
|
const char *p;
|
|
|
|
p = special_root_names[hkey - HKEY_SPECIAL_ROOT_FIRST];
|
|
i = 0;
|
|
while (*p) keyname[i++] = *p++;
|
|
|
|
if (hkey == HKEY_CURRENT_USER) /* this one is special */
|
|
{
|
|
/* get the current user name */
|
|
char buffer[10];
|
|
struct passwd *pwd = getpwuid( getuid() );
|
|
|
|
if (pwd) p = pwd->pw_name;
|
|
else
|
|
{
|
|
sprintf( buffer, "%ld", (long) getuid() );
|
|
p = buffer;
|
|
}
|
|
while (*p && i < sizeof(keyname)/sizeof(WCHAR)-1) keyname[i++] = *p++;
|
|
}
|
|
keyname[i++] = 0;
|
|
|
|
if ((key = create_key( root_key, keyname, NULL, 0, time(NULL), &dummy )))
|
|
{
|
|
special_root_keys[hkey - HKEY_SPECIAL_ROOT_FIRST] = key;
|
|
key->flags |= KEY_ROOT;
|
|
}
|
|
return key;
|
|
}
|
|
|
|
/* get the registry key corresponding to an hkey handle */
|
|
static struct key *get_hkey_obj( int hkey, unsigned int access )
|
|
{
|
|
struct key *key;
|
|
|
|
if (!hkey) return (struct key *)grab_object( root_key );
|
|
if (IS_SPECIAL_ROOT_HKEY(hkey))
|
|
{
|
|
if (!(key = special_root_keys[hkey - HKEY_SPECIAL_ROOT_FIRST]))
|
|
key = create_root_key( hkey );
|
|
else
|
|
grab_object( key );
|
|
}
|
|
else
|
|
key = (struct key *)get_handle_obj( current->process, hkey, access, &key_ops );
|
|
return key;
|
|
}
|
|
|
|
/* 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, int size )
|
|
{
|
|
char *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 )
|
|
{
|
|
fprintf( stderr, "Line %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, int *len, const char *src, char endchar )
|
|
{
|
|
int 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, unsigned int options,
|
|
int prefix_len, struct file_load_info *info )
|
|
{
|
|
WCHAR *p, *name;
|
|
int res, len, modif;
|
|
|
|
len = strlen(buffer) * sizeof(WCHAR);
|
|
if (!get_file_tmp_space( info, len )) return NULL;
|
|
|
|
if ((res = parse_strW( (WCHAR *)info->tmp, &len, buffer, ']' )) == -1)
|
|
{
|
|
file_read_error( "Malformed key", info );
|
|
return NULL;
|
|
}
|
|
if (!sscanf( buffer + res, " %d", &modif )) modif = time(NULL);
|
|
|
|
p = (WCHAR *)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 );
|
|
}
|
|
if (!(name = copy_path( p, len - ((char *)p - info->tmp) )))
|
|
{
|
|
file_read_error( "Key is too long", info );
|
|
return NULL;
|
|
}
|
|
return create_key( base, name, NULL, options, modif, &res );
|
|
}
|
|
|
|
/* parse a comma-separated list of hex digits */
|
|
static int parse_hex( unsigned char *dest, int *len, const char *buffer )
|
|
{
|
|
const char *p = buffer;
|
|
int 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, int *len,
|
|
struct file_load_info *info )
|
|
{
|
|
int maxlen = strlen(buffer) * sizeof(WCHAR);
|
|
if (!get_file_tmp_space( info, maxlen )) return NULL;
|
|
if (buffer[0] == '@')
|
|
{
|
|
info->tmp[0] = info->tmp[1] = 0;
|
|
*len = 1;
|
|
}
|
|
else
|
|
{
|
|
if ((*len = parse_strW( (WCHAR *)info->tmp, &maxlen, buffer + 1, '\"' )) == -1) goto error;
|
|
(*len)++; /* for initial quote */
|
|
}
|
|
while (isspace(buffer[*len])) (*len)++;
|
|
if (buffer[*len] != '=') goto error;
|
|
(*len)++;
|
|
while (isspace(buffer[*len])) (*len)++;
|
|
return insert_value( key, (WCHAR *)info->tmp );
|
|
|
|
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 maxlen, len, res;
|
|
int type, parse_type;
|
|
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( (WCHAR *)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( 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;
|
|
/* update the key level but not the modification time */
|
|
key->level = max( key->level, current_level );
|
|
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;
|
|
int len = strlen(name) * sizeof(WCHAR);
|
|
if (!get_file_tmp_space( info, len )) return 0;
|
|
|
|
if ((res = parse_strW( (WCHAR *)info->tmp, &len, name, ']' )) == -1)
|
|
{
|
|
file_read_error( "Malformed key", info );
|
|
return 0;
|
|
}
|
|
for (p = (WCHAR *)info->tmp; *p; p++) if (*p == '\\') break;
|
|
*p = 0;
|
|
for (res = 1; key != root_key; res++)
|
|
{
|
|
if (!strcmpiW( (WCHAR *)info->tmp, key->name )) break;
|
|
key = key->parent;
|
|
}
|
|
if (key == root_key) res = 0; /* no matching name */
|
|
return res;
|
|
}
|
|
|
|
/* load all the keys from the input file */
|
|
static void load_keys( struct key *key, FILE *f )
|
|
{
|
|
struct key *subkey = NULL;
|
|
struct file_load_info info;
|
|
char *p;
|
|
unsigned int options = 0;
|
|
int prefix_len = -1; /* number of key name prefixes to skip */
|
|
|
|
if (key->flags & KEY_VOLATILE) options |= REG_OPTION_VOLATILE;
|
|
|
|
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)
|
|
{
|
|
for (p = info.buffer; *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, options, prefix_len, &info )))
|
|
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, int handle )
|
|
{
|
|
struct object *obj;
|
|
int fd;
|
|
|
|
if (!(obj = get_handle_obj( current->process, handle, GENERIC_READ, NULL ))) return;
|
|
fd = obj->ops->get_read_fd( obj );
|
|
release_object( obj );
|
|
if (fd != -1)
|
|
{
|
|
FILE *f = fdopen( fd, "r" );
|
|
if (f)
|
|
{
|
|
load_keys( key, f );
|
|
fclose( f );
|
|
}
|
|
else file_set_error();
|
|
}
|
|
}
|
|
|
|
/* registry initialisation */
|
|
void init_registry(void)
|
|
{
|
|
static const WCHAR root_name[] = { 0 };
|
|
static const WCHAR config_name[] =
|
|
{ 'M','a','c','h','i','n','e','\\','S','o','f','t','w','a','r','e','\\',
|
|
'W','i','n','e','\\','W','i','n','e','\\','C','o','n','f','i','g',0 };
|
|
|
|
char *filename;
|
|
const char *config;
|
|
FILE *f;
|
|
|
|
/* create the root key */
|
|
root_key = alloc_key( root_name, time(NULL) );
|
|
assert( root_key );
|
|
root_key->flags |= KEY_ROOT;
|
|
|
|
/* load the config file */
|
|
config = get_config_dir();
|
|
if (!(filename = malloc( strlen(config) + 8 ))) fatal_error( "out of memory\n" );
|
|
strcpy( filename, config );
|
|
strcat( filename, "/config" );
|
|
if ((f = fopen( filename, "r" )))
|
|
{
|
|
struct key *key;
|
|
int dummy;
|
|
|
|
/* create the config key */
|
|
if (!(key = create_key( root_key, copy_path( config_name, sizeof(config_name) ),
|
|
NULL, 0, time(NULL), &dummy )))
|
|
fatal_error( "could not create config key\n" );
|
|
key->flags |= KEY_VOLATILE;
|
|
|
|
load_keys( key, f );
|
|
fclose( f );
|
|
if (get_error() == STATUS_NOT_REGISTRY_FILE)
|
|
fatal_error( "%s is not a valid registry file\n", filename );
|
|
if (get_error())
|
|
fatal_error( "loading %s failed with error %x\n", filename, get_error() );
|
|
|
|
release_object( key );
|
|
}
|
|
free( filename );
|
|
}
|
|
|
|
/* update the level of the parents of a key (only needed for the old format) */
|
|
static int update_level( struct key *key )
|
|
{
|
|
int i;
|
|
int max = key->level;
|
|
for (i = 0; i <= key->last_subkey; i++)
|
|
{
|
|
int sub = update_level( key->subkeys[i] );
|
|
if (sub > max) max = sub;
|
|
}
|
|
key->level = max;
|
|
return max;
|
|
}
|
|
|
|
/* 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, int handle )
|
|
{
|
|
struct object *obj;
|
|
int fd;
|
|
|
|
if (key->flags & KEY_DELETED)
|
|
{
|
|
set_error( STATUS_KEY_DELETED );
|
|
return;
|
|
}
|
|
if (!(obj = get_handle_obj( current->process, handle, GENERIC_WRITE, NULL ))) return;
|
|
fd = obj->ops->get_write_fd( obj );
|
|
release_object( obj );
|
|
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 );
|
|
}
|
|
}
|
|
}
|
|
|
|
/* register a key branch for being saved on exit */
|
|
static void register_branch_for_saving( struct key *key, const char *path, size_t len )
|
|
{
|
|
if (save_branch_count >= MAX_SAVE_BRANCH_INFO)
|
|
{
|
|
set_error( STATUS_NO_MORE_ENTRIES );
|
|
return;
|
|
}
|
|
if (!len || !(save_branch_info[save_branch_count].path = memdup( path, len ))) return;
|
|
save_branch_info[save_branch_count].path[len - 1] = 0;
|
|
save_branch_info[save_branch_count].key = (struct key *)grab_object( key );
|
|
save_branch_count++;
|
|
}
|
|
|
|
/* save a registry branch to a file */
|
|
static int save_branch( struct key *key, const char *path )
|
|
{
|
|
char *p, *real, *tmp = NULL;
|
|
int fd, count = 0, ret = 0;
|
|
FILE *f;
|
|
|
|
/* get the real path */
|
|
|
|
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)
|
|
{
|
|
struct stat st;
|
|
/* if file is not a regular file or has multiple links,
|
|
write directly into it; otherwise use a temp file */
|
|
if (!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 );
|
|
free( tmp );
|
|
}
|
|
|
|
done:
|
|
if (real) free( real );
|
|
return ret;
|
|
}
|
|
|
|
/* periodic saving of the registry */
|
|
static void periodic_save( void *arg )
|
|
{
|
|
int i;
|
|
for (i = 0; i < save_branch_count; i++)
|
|
save_branch( save_branch_info[i].key, save_branch_info[i].path );
|
|
add_timeout( &next_save_time, save_period );
|
|
save_timeout_user = add_timeout_user( &next_save_time, periodic_save, 0 );
|
|
}
|
|
|
|
/* save the registry and close the top-level keys; used on server exit */
|
|
void close_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( " " );
|
|
}
|
|
release_object( save_branch_info[i].key );
|
|
}
|
|
release_object( root_key );
|
|
}
|
|
|
|
|
|
/* create a registry key */
|
|
DECL_HANDLER(create_key)
|
|
{
|
|
struct key *key = NULL, *parent;
|
|
unsigned int access = req->access;
|
|
WCHAR *name, *class;
|
|
size_t len;
|
|
|
|
if (access & MAXIMUM_ALLOWED) access = KEY_ALL_ACCESS; /* FIXME: needs general solution */
|
|
req->hkey = -1;
|
|
if (!(name = copy_req_path( req, &len ))) return;
|
|
if ((parent = get_hkey_obj( req->parent, 0 /*FIXME*/ )))
|
|
{
|
|
if (len == get_req_data_size(req)) /* no class specified */
|
|
{
|
|
key = create_key( parent, name, NULL, req->options, req->modif, &req->created );
|
|
}
|
|
else
|
|
{
|
|
const WCHAR *class_ptr = (WCHAR *)((char *)get_req_data(req) + len);
|
|
|
|
if ((class = req_strdupW( req, class_ptr, get_req_data_size(req) - len )))
|
|
{
|
|
key = create_key( parent, name, class, req->options,
|
|
req->modif, &req->created );
|
|
free( class );
|
|
}
|
|
}
|
|
if (key)
|
|
{
|
|
req->hkey = alloc_handle( current->process, key, access, 0 );
|
|
release_object( key );
|
|
}
|
|
release_object( parent );
|
|
}
|
|
}
|
|
|
|
/* open a registry key */
|
|
DECL_HANDLER(open_key)
|
|
{
|
|
struct key *key, *parent;
|
|
unsigned int access = req->access;
|
|
|
|
if (access & MAXIMUM_ALLOWED) access = KEY_ALL_ACCESS; /* FIXME: needs general solution */
|
|
req->hkey = -1;
|
|
if ((parent = get_hkey_obj( req->parent, 0 /*FIXME*/ )))
|
|
{
|
|
WCHAR *name = copy_path( get_req_data(req), get_req_data_size(req) );
|
|
if (name && (key = open_key( parent, name )))
|
|
{
|
|
req->hkey = alloc_handle( current->process, key, access, 0 );
|
|
release_object( key );
|
|
}
|
|
release_object( parent );
|
|
}
|
|
}
|
|
|
|
/* delete a registry key */
|
|
DECL_HANDLER(delete_key)
|
|
{
|
|
struct key *key;
|
|
|
|
if ((key = get_hkey_obj( req->hkey, 0 /*FIXME*/ )))
|
|
{
|
|
delete_key( key );
|
|
release_object( key );
|
|
}
|
|
}
|
|
|
|
/* enumerate registry subkeys */
|
|
DECL_HANDLER(enum_key)
|
|
{
|
|
struct key *key;
|
|
size_t len = 0;
|
|
|
|
if ((key = get_hkey_obj( req->hkey,
|
|
req->index == -1 ? KEY_QUERY_VALUE : KEY_ENUMERATE_SUB_KEYS )))
|
|
{
|
|
len = enum_key( key, req->index, req );
|
|
release_object( key );
|
|
}
|
|
set_req_data_size( req, len );
|
|
}
|
|
|
|
/* set a value of a registry key */
|
|
DECL_HANDLER(set_key_value)
|
|
{
|
|
struct key *key;
|
|
WCHAR *name;
|
|
size_t len;
|
|
|
|
if (!(name = copy_req_path( req, &len ))) return;
|
|
if ((key = get_hkey_obj( req->hkey, KEY_SET_VALUE )))
|
|
{
|
|
size_t datalen = get_req_data_size(req) - len;
|
|
const char *data = (char *)get_req_data(req) + len;
|
|
|
|
set_value( key, name, req->type, req->total, req->offset, datalen, data );
|
|
release_object( key );
|
|
}
|
|
}
|
|
|
|
/* retrieve the value of a registry key */
|
|
DECL_HANDLER(get_key_value)
|
|
{
|
|
struct key *key;
|
|
WCHAR *name;
|
|
size_t len = 0, tmp;
|
|
|
|
req->len = 0;
|
|
if (!(name = copy_req_path( req, &tmp ))) return;
|
|
if ((key = get_hkey_obj( req->hkey, KEY_QUERY_VALUE )))
|
|
{
|
|
len = get_value( key, name, req->offset, get_req_data_size(req),
|
|
&req->type, &req->len, get_req_data(req) );
|
|
release_object( key );
|
|
}
|
|
set_req_data_size( req, len );
|
|
}
|
|
|
|
/* enumerate the value of a registry key */
|
|
DECL_HANDLER(enum_key_value)
|
|
{
|
|
struct key *key;
|
|
unsigned int max = get_req_size( req, req->data, sizeof(req->data[0]) );
|
|
|
|
req->len = 0;
|
|
req->name[0] = 0;
|
|
if ((key = get_hkey_obj( req->hkey, KEY_QUERY_VALUE )))
|
|
{
|
|
enum_value( key, req->index, req->name, req->offset, max,
|
|
&req->type, &req->len, req->data );
|
|
release_object( key );
|
|
}
|
|
}
|
|
|
|
/* delete a value of a registry key */
|
|
DECL_HANDLER(delete_key_value)
|
|
{
|
|
WCHAR *name;
|
|
struct key *key;
|
|
|
|
if ((key = get_hkey_obj( req->hkey, KEY_SET_VALUE )))
|
|
{
|
|
if ((name = req_strdupW( req, get_req_data(req), get_req_data_size(req) )))
|
|
{
|
|
delete_value( key, name );
|
|
free( name );
|
|
}
|
|
release_object( key );
|
|
}
|
|
}
|
|
|
|
/* load a registry branch from a file */
|
|
DECL_HANDLER(load_registry)
|
|
{
|
|
struct key *key;
|
|
|
|
if ((key = get_hkey_obj( req->hkey, KEY_SET_VALUE | KEY_CREATE_SUB_KEY )))
|
|
{
|
|
/* FIXME: use subkey name */
|
|
load_registry( key, req->file );
|
|
release_object( key );
|
|
}
|
|
}
|
|
|
|
/* save a registry branch to a file */
|
|
DECL_HANDLER(save_registry)
|
|
{
|
|
struct key *key;
|
|
|
|
if ((key = get_hkey_obj( req->hkey, KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS )))
|
|
{
|
|
save_registry( key, req->file );
|
|
release_object( key );
|
|
}
|
|
}
|
|
|
|
/* set the current and saving level for the registry */
|
|
DECL_HANDLER(set_registry_levels)
|
|
{
|
|
current_level = req->current;
|
|
saving_level = req->saving;
|
|
|
|
/* set periodic save timer */
|
|
|
|
if (save_timeout_user)
|
|
{
|
|
remove_timeout_user( save_timeout_user );
|
|
save_timeout_user = NULL;
|
|
}
|
|
if ((save_period = req->period))
|
|
{
|
|
if (save_period < 10000) save_period = 10000; /* limit rate */
|
|
gettimeofday( &next_save_time, 0 );
|
|
add_timeout( &next_save_time, save_period );
|
|
save_timeout_user = add_timeout_user( &next_save_time, periodic_save, 0 );
|
|
}
|
|
}
|
|
|
|
/* save a registry branch at server exit */
|
|
DECL_HANDLER(save_registry_atexit)
|
|
{
|
|
struct key *key;
|
|
|
|
if ((key = get_hkey_obj( req->hkey, KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS )))
|
|
{
|
|
register_branch_for_saving( key, get_req_data(req), get_req_data_size(req) );
|
|
release_object( key );
|
|
}
|
|
}
|