2 * WineCfg configuration management
4 * Copyright 2002 Jaco Greeff
5 * Copyright 2003 Dimitrie O. Paun
6 * Copyright 2003-2004 Mike Hearn
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * - Icons in listviews/icons
25 * - Better add app dialog, scan c: for EXE files and add to list in background
26 * - Use [GNOME] HIG style groupboxes rather than win32 style (looks nicer, imho)
35 #include <wine/debug.h>
36 #include <wine/list.h>
38 WINE_DEFAULT_DEBUG_CHANNEL(winecfg);
42 HKEY config_key = NULL;
46 /* this is called from the WM_SHOWWINDOW handlers of each tab page.
48 * it's a nasty hack, necessary because the property sheet insists on resetting the window title
49 * to the title of the tab, which is utterly useless. dropping the property sheet is on the todo list.
51 void set_window_title(HWND dialog)
55 /* update the window title */
58 const char *template = "Wine Configuration for %s";
59 newtitle = HeapAlloc(GetProcessHeap(), 0, strlen(template) + strlen(current_app) + 1);
60 sprintf(newtitle, template, current_app);
64 newtitle = strdupA("Wine Configuration");
67 WINE_TRACE("setting title to %s\n", newtitle);
68 SendMessage(GetParent(dialog), PSM_SETTITLE, 0, (LPARAM) newtitle);
69 HeapFree(GetProcessHeap(), 0, newtitle);
74 * get_config_key: Retrieves a configuration value from the registry
76 * char *subkey : the name of the config section
77 * char *name : the name of the config value
78 * char *default : if the key isn't found, return this value instead
80 * Returns a buffer holding the value if successful, NULL if
81 * not. Caller is responsible for releasing the result.
84 static char *get_config_key (HKEY root, const char *subkey, const char *name, const char *def)
91 WINE_TRACE("subkey=%s, name=%s, def=%s\n", subkey, name, def);
93 res = RegOpenKey(root, subkey, &hSubKey);
94 if (res != ERROR_SUCCESS)
96 if (res == ERROR_FILE_NOT_FOUND)
98 WINE_TRACE("Section key not present - using default\n");
99 return def ? strdupA(def) : NULL;
103 WINE_ERR("RegOpenKey failed on wine config key (res=%ld)\n", res);
108 res = RegQueryValueExA(hSubKey, name, NULL, NULL, NULL, &len);
109 if (res == ERROR_FILE_NOT_FOUND)
111 WINE_TRACE("Value not present - using default\n");
112 buffer = def ? strdupA(def) : NULL;
114 } else if (res != ERROR_SUCCESS)
116 WINE_ERR("Couldn't query value's length (res=%ld)\n", res);
120 buffer = HeapAlloc(GetProcessHeap(), 0, len + 1);
122 RegQueryValueEx(hSubKey, name, NULL, NULL, (LPBYTE) buffer, &len);
124 WINE_TRACE("buffer=%s\n", buffer);
126 if (hSubKey && hSubKey != root) RegCloseKey(hSubKey);
132 * set_config_key: convenience wrapper to set a key/value pair
134 * const char *subKey : the name of the config section
135 * const char *valueName : the name of the config value
136 * const char *value : the value to set the configuration key to
138 * Returns 0 on success, non-zero otherwise
140 * If valueName or value is NULL, an empty section will be created
142 static int set_config_key(HKEY root, const char *subkey, const char *name, const void *value, DWORD type) {
146 WINE_TRACE("subkey=%s: name=%s, value=%p, type=%ld\n", subkey, name, value, type);
148 assert( subkey != NULL );
152 res = RegCreateKey(root, subkey, &key);
153 if (res != ERROR_SUCCESS) goto end;
156 if (name == NULL || value == NULL) goto end;
160 case REG_SZ: res = RegSetValueEx(key, name, 0, REG_SZ, value, strlen(value) + 1); break;
161 case REG_DWORD: res = RegSetValueEx(key, name, 0, REG_DWORD, value, sizeof(DWORD)); break;
163 if (res != ERROR_SUCCESS) goto end;
167 if (key && key != root) RegCloseKey(key);
168 if (res != 0) WINE_ERR("Unable to set configuration key %s in section %s, res=%ld\n", name, subkey, res);
172 /* removes the requested value from the registry, however, does not
173 * remove the section if empty. Returns S_OK (0) on success.
175 static HRESULT remove_value(HKEY root, const char *subkey, const char *name)
180 WINE_TRACE("subkey=%s, name=%s\n", subkey, name);
182 hr = RegOpenKey(root, subkey, &key);
183 if (hr != S_OK) return hr;
185 hr = RegDeleteValue(key, name);
186 if (hr != ERROR_SUCCESS) return hr;
191 /* removes the requested subkey from the registry, assuming it exists */
192 static LONG remove_path(HKEY root, char *section) {
194 DWORD max_sub_key_len;
197 LONG ret = ERROR_SUCCESS;
201 WINE_TRACE("section=%s\n", section);
203 if ((ret = RegOpenKey(root, section, &branch_key)) != ERROR_SUCCESS)
206 /* get size information and resize the buffers if necessary */
207 if ((ret = RegQueryInfoKey(branch_key, NULL, NULL, NULL,
208 &subkeys, &max_sub_key_len,
209 NULL, NULL, NULL, NULL, NULL, NULL
213 curr_len = strlen(section);
214 buffer = HeapAlloc(GetProcessHeap(), 0, max_sub_key_len + curr_len + 1);
215 strcpy(buffer, section);
217 buffer[curr_len] = '\\';
218 for (i = subkeys - 1; i >= 0; i--)
220 DWORD buf_len = max_sub_key_len - curr_len - 1;
222 ret = RegEnumKeyEx(branch_key, i, buffer + curr_len + 1,
223 &buf_len, NULL, NULL, NULL, NULL);
224 if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA &&
225 ret != ERROR_NO_MORE_ITEMS)
228 remove_path(root, buffer);
230 HeapFree(GetProcessHeap(), 0, buffer);
231 RegCloseKey(branch_key);
233 return RegDeleteKey(root, section);
237 /* ========================================================================= */
239 /* This code exists for the following reasons:
241 * - It makes working with the registry easier
242 * - By storing a mini cache of the registry, we can more easily implement
243 * cancel/revert and apply. The 'settings list' is an overlay on top of
244 * the actual registry data that we can write out at will.
246 * Rather than model a tree in memory, we simply store each absolute (rooted
247 * at the config key) path.
254 HKEY root; /* the key on which path is rooted */
255 char *path; /* path in the registry rooted at root */
256 char *name; /* name of the registry value. if null, this means delete the key */
257 char *value; /* contents of the registry value. if null, this means delete the value */
258 DWORD type; /* type of registry value. REG_SZ or REG_DWORD for now */
261 struct list *settings;
263 static void free_setting(struct setting *setting)
265 assert( setting != NULL );
266 assert( setting->path );
268 WINE_TRACE("destroying %p: %s\n", setting, setting->path);
270 HeapFree(GetProcessHeap(), 0, setting->path);
271 HeapFree(GetProcessHeap(), 0, setting->name);
272 HeapFree(GetProcessHeap(), 0, setting->value);
274 list_remove(&setting->entry);
276 HeapFree(GetProcessHeap(), 0, setting);
280 * Returns the contents of the value at path. If not in the settings
281 * list, it will be fetched from the registry - failing that, the
282 * default will be used.
284 * If already in the list, the contents as given there will be
285 * returned. You are expected to HeapFree the result.
287 char *get_reg_key(HKEY root, const char *path, const char *name, const char *def)
293 WINE_TRACE("path=%s, name=%s, def=%s\n", path, name, def);
295 /* check if it's in the list */
296 LIST_FOR_EACH( cursor, settings )
298 s = LIST_ENTRY(cursor, struct setting, entry);
300 if (root != s->root) continue;
301 if (strcasecmp(path, s->path) != 0) continue;
302 if (strcasecmp(name, s->name) != 0) continue;
304 WINE_TRACE("found %s:%s in settings list, returning %s\n", path, name, s->value);
305 return s->value ? strdupA(s->value) : NULL;
308 /* no, so get from the registry */
309 val = get_config_key(root, path, name, def);
311 WINE_TRACE("returning %s\n", val);
317 * Used to set a registry key.
319 * path is rooted at the config key, ie use "Version" or
320 * "AppDefaults\\fooapp.exe\\Version". You can use keypath()
321 * to get such a string.
323 * name is the value name, or NULL to delete the path.
325 * value is what to set the value to, or NULL to delete it.
327 * type is REG_SZ or REG_DWORD.
329 * These values will be copied when necessary.
331 static void set_reg_key_ex(HKEY root, const char *path, const char *name, const void *value, DWORD type)
336 assert( path != NULL );
338 WINE_TRACE("path=%s, name=%s, value=%p\n", path, name, value);
340 /* firstly, see if we already set this setting */
341 LIST_FOR_EACH( cursor, settings )
343 struct setting *s = LIST_ENTRY(cursor, struct setting, entry);
345 if (root != s->root) continue;
346 if (strcasecmp(s->path, path) != 0) continue;
347 if ((s->name && name) && strcasecmp(s->name, name) != 0) continue;
349 /* are we attempting a double delete? */
350 if (!s->name && !name) return;
352 /* do we want to undelete this key? */
353 if (!s->name && name) s->name = strdupA(name);
355 /* yes, we have already set it, so just replace the content and return */
356 HeapFree(GetProcessHeap(), 0, s->value);
361 s->value = value ? strdupA(value) : NULL;
364 s->value = HeapAlloc(GetProcessHeap(), 0, sizeof(DWORD));
365 memcpy( s->value, value, sizeof(DWORD) );
369 /* are we deleting this key? this won't remove any of the
370 * children from the overlay so if the user adds it again in
371 * that session it will appear to undelete the settings, but
372 * in reality only the settings actually modified by the user
373 * in that session will be restored. we might want to fix this
374 * corner case in future by actually deleting all the children
375 * here so that once it's gone, it's gone.
377 if (!name) s->name = NULL;
382 /* otherwise add a new setting for it */
383 s = HeapAlloc(GetProcessHeap(), 0, sizeof(struct setting));
385 s->path = strdupA(path);
386 s->name = name ? strdupA(name) : NULL;
391 s->value = value ? strdupA(value) : NULL;
394 s->value = HeapAlloc(GetProcessHeap(), 0, sizeof(DWORD));
395 memcpy( s->value, value, sizeof(DWORD) );
399 list_add_tail(settings, &s->entry);
402 void set_reg_key(HKEY root, const char *path, const char *name, const char *value)
404 set_reg_key_ex(root, path, name, value, REG_SZ);
407 void set_reg_key_dword(HKEY root, const char *path, const char *name, DWORD value)
409 set_reg_key_ex(root, path, name, &value, REG_DWORD);
413 * enumerates the value names at the given path, taking into account
414 * the changes in the settings list.
416 * you are expected to HeapFree each element of the array, which is null
417 * terminated, as well as the array itself.
419 char **enumerate_values(HKEY root, char *path)
423 char **values = NULL;
427 res = RegOpenKey(root, path, &key);
428 if (res == ERROR_SUCCESS)
433 DWORD namesize = sizeof(name);
434 BOOL removed = FALSE;
436 /* find out the needed size, allocate a buffer, read the value */
437 if ((res = RegEnumValue(key, i, name, &namesize, NULL, NULL, NULL, NULL)) != ERROR_SUCCESS)
440 WINE_TRACE("name=%s\n", name);
442 /* check if this value name has been removed in the settings list */
443 LIST_FOR_EACH( cursor, settings )
445 struct setting *s = LIST_ENTRY(cursor, struct setting, entry);
446 if (strcasecmp(s->path, path) != 0) continue;
447 if (strcasecmp(s->name, name) != 0) continue;
451 WINE_TRACE("this key has been removed, so skipping\n");
457 if (removed) /* this value was deleted by the user, so don't include it */
459 HeapFree(GetProcessHeap(), 0, name);
464 /* grow the array if necessary, add buffer to it, iterate */
465 if (values) values = HeapReAlloc(GetProcessHeap(), 0, values, sizeof(char*) * (valueslen + 1));
466 else values = HeapAlloc(GetProcessHeap(), 0, sizeof(char*));
468 values[valueslen++] = strdupA(name);
469 WINE_TRACE("valueslen is now %d\n", valueslen);
475 WINE_WARN("failed opening registry key %s, res=0x%lx\n", path, res);
478 WINE_TRACE("adding settings in list but not registry\n");
480 /* now we have to add the values that aren't in the registry but are in the settings list */
481 LIST_FOR_EACH( cursor, settings )
483 struct setting *setting = LIST_ENTRY(cursor, struct setting, entry);
486 if (strcasecmp(setting->path, path) != 0) continue;
488 if (!setting->value) continue;
490 for (i = 0; i < valueslen; i++)
492 if (strcasecmp(setting->name, values[i]) == 0)
501 WINE_TRACE("%s in list but not registry\n", setting->name);
503 /* otherwise it's been set by the user but isn't in the registry */
504 if (values) values = HeapReAlloc(GetProcessHeap(), 0, values, sizeof(char*) * (valueslen + 1));
505 else values = HeapAlloc(GetProcessHeap(), 0, sizeof(char*));
507 values[valueslen++] = strdupA(setting->name);
510 WINE_TRACE("adding null terminator\n");
513 values = HeapReAlloc(GetProcessHeap(), 0, values, sizeof(char*) * (valueslen + 1));
514 values[valueslen] = NULL;
523 * returns true if the given key/value pair exists in the registry or
524 * has been written to.
526 BOOL reg_key_exists(HKEY root, const char *path, const char *name)
528 char *val = get_reg_key(root, path, name, NULL);
532 HeapFree(GetProcessHeap(), 0, val);
539 static void process_setting(struct setting *s)
543 WINE_TRACE("Setting %s:%s to '%s'\n", s->path, s->name, s->value);
544 set_config_key(s->root, s->path, s->name, s->value, s->type);
548 /* NULL name means remove that path/section entirely */
549 if (s->path && s->name) remove_value(s->root, s->path, s->name);
550 else if (s->path && !s->name) remove_path(s->root, s->path);
556 if (list_empty(settings)) return; /* we will be called for each page when the user clicks OK */
560 while (!list_empty(settings))
562 struct setting *s = (struct setting *) list_head(settings);
568 /* ================================== utility functions ============================ */
570 char *current_app = NULL; /* the app we are currently editing, or NULL if editing global */
572 /* returns a registry key path suitable for passing to addTransaction */
573 char *keypath(const char *section)
575 static char *result = NULL;
577 HeapFree(GetProcessHeap(), 0, result);
581 result = HeapAlloc(GetProcessHeap(), 0, strlen("AppDefaults\\") + strlen(current_app) + 2 /* \\ */ + strlen(section) + 1 /* terminator */);
582 sprintf(result, "AppDefaults\\%s", current_app);
583 if (section[0]) sprintf( result + strlen(result), "\\%s", section );
587 result = strdupA(section);
593 void PRINTERROR(void)
597 FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
598 0, GetLastError(), MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),
599 (LPSTR)&msg, 0, NULL);
601 /* eliminate trailing newline, is this a Wine bug? */
602 *(strrchr(msg, '\r')) = '\0';
604 WINE_TRACE("error: '%s'\n", msg);
607 int initialize(void) {
608 DWORD res = RegCreateKey(HKEY_CURRENT_USER, WINE_KEY_ROOT, &config_key);
610 if (res != ERROR_SUCCESS) {
611 WINE_ERR("RegOpenKey failed on wine config key (%ld)\n", res);
615 /* we could probably just have the list as static data */
616 settings = HeapAlloc(GetProcessHeap(), 0, sizeof(struct list));