xref: /reactos/base/applications/regedit/regedit.c (revision 6a6b5ec2)
1 /*
2  * Windows regedit.exe registry editor implementation.
3  *
4  * Copyright 2002 Andriy Palamarchuk
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 #ifndef __REACTOS__
22 #include <stdlib.h>
23 #include <windows.h>
24 #include <commctrl.h>
25 #include <shellapi.h>
26 
27 #include "wine/debug.h"
28 #include "main.h"
29 #else
30 #include "regedit.h"
31 #endif
32 
33 WINE_DEFAULT_DEBUG_CHANNEL(regedit);
34 
35 static void output_writeconsole(const WCHAR *str, DWORD wlen)
36 {
37 #ifdef __REACTOS__
38     /* This is win32gui application, don't ever try writing to console.
39      * For the console version we have a separate reg.exe application. */
40     MessageBoxW(NULL, str, NULL, MB_ICONERROR);
41 #else
42     DWORD count;
43 
44     if (!WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE), str, wlen, &count, NULL))
45     {
46         DWORD len;
47         char  *msgA;
48 
49         /* WriteConsole() fails on Windows if its output is redirected. If this occurs,
50          * we should call WriteFile() with OEM code page.
51          */
52         len = WideCharToMultiByte(GetOEMCP(), 0, str, wlen, NULL, 0, NULL, NULL);
53         msgA = malloc(len);
54         if (!msgA) return;
55 
56         WideCharToMultiByte(GetOEMCP(), 0, str, wlen, msgA, len, NULL, NULL);
57         WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), msgA, len, &count, FALSE);
58         free(msgA);
59     }
60 #endif
61 }
62 
63 static void output_formatstring(const WCHAR *fmt, va_list va_args)
64 {
65     WCHAR *str;
66     DWORD len;
67 
68 #ifdef __REACTOS__
69     SetLastError(NO_ERROR);
70 #endif
71     len = FormatMessageW(FORMAT_MESSAGE_FROM_STRING|FORMAT_MESSAGE_ALLOCATE_BUFFER,
72                          fmt, 0, 0, (WCHAR *)&str, 0, &va_args);
73 #ifdef __REACTOS__
74     if (len == 0 && GetLastError() != NO_ERROR)
75 #else
76     if (len == 0 && GetLastError() != ERROR_NO_WORK_DONE)
77 #endif
78     {
79         WINE_FIXME("Could not format string: le=%lu, fmt=%s\n", GetLastError(), wine_dbgstr_w(fmt));
80         return;
81     }
82     output_writeconsole(str, len);
83     LocalFree(str);
84 }
85 
86 void WINAPIV output_message(unsigned int id, ...)
87 {
88     WCHAR fmt[1536];
89     va_list va_args;
90 
91     if (!LoadStringW(GetModuleHandleW(NULL), id, fmt, ARRAY_SIZE(fmt)))
92     {
93         WINE_FIXME("LoadString failed with %ld\n", GetLastError());
94         return;
95     }
96     va_start(va_args, id);
97     output_formatstring(fmt, va_args);
98     va_end(va_args);
99 }
100 
101 void WINAPIV error_exit(unsigned int id, ...)
102 {
103     WCHAR fmt[1536];
104     va_list va_args;
105 
106     if (!LoadStringW(GetModuleHandleW(NULL), id, fmt, ARRAY_SIZE(fmt)))
107     {
108 #ifndef __REACTOS__
109         WINE_FIXME("LoadString failed with %lu\n", GetLastError());
110 #endif
111         return;
112     }
113     va_start(va_args, id);
114     output_formatstring(fmt, va_args);
115     va_end(va_args);
116 
117     exit(0); /* regedit.exe always terminates with error code zero */
118 }
119 
120 typedef enum {
121     ACTION_ADD, ACTION_EXPORT, ACTION_DELETE
122 } REGEDIT_ACTION;
123 
124 #ifdef __REACTOS__
125 static void PerformRegAction(REGEDIT_ACTION action, WCHAR **argv, int *i, BOOL silent)
126 #else
127 static void PerformRegAction(REGEDIT_ACTION action, WCHAR **argv, int *i)
128 #endif
129 {
130     switch (action) {
131     case ACTION_ADD: {
132             WCHAR *filename = argv[*i];
133             WCHAR *realname = NULL;
134             FILE *reg_file;
135 
136 #ifdef __REACTOS__
137             /* Request import confirmation */
138             if (!silent)
139             {
140                 WCHAR szText[512];
141                 int choice;
142                 UINT mbType = MB_YESNO;
143 
144                 LoadStringW(hInst, IDS_IMPORT_PROMPT, szText, ARRAY_SIZE(szText));
145 
146                 if (argv[*i + 1] != NULL)
147                 {
148                     /* Enable three buttons if there's another file coming */
149                     mbType = MB_YESNOCANCEL;
150                 }
151 
152                 choice = InfoMessageBox(NULL, mbType | MB_ICONQUESTION, szTitle, szText, filename);
153                 switch (choice)
154                 {
155                     case IDNO:
156                         return;
157                     case IDCANCEL:
158                         /* The cancel case is useful if the user is importing more than one registry file
159                          * at a time, and wants to back out anytime during the import process. This way, the
160                          * user doesn't have to resort to ending the regedit process abruptly just to cancel
161                          * the operation.
162                          * To achieve this, we skip all further command line arguments.
163                          */
164                         *i = INT_MAX - 1;
165                         return;
166                     default:
167                         break;
168                 }
169             }
170 #endif
171             if (!lstrcmpW(filename, L"-"))
172                 reg_file = stdin;
173             else
174             {
175                 int size;
176 
177                 size = SearchPathW(NULL, filename, NULL, 0, NULL, NULL);
178                 if (size > 0)
179                 {
180                     realname = malloc(size * sizeof(WCHAR));
181                     size = SearchPathW(NULL, filename, NULL, size, realname, NULL);
182                 }
183                 if (size == 0)
184                 {
185                     output_message(STRING_FILE_NOT_FOUND, filename);
186                     free(realname);
187                     return;
188                 }
189                 reg_file = _wfopen(realname, L"rb");
190                 if (reg_file == NULL)
191                 {
192                     _wperror(L"regedit");
193                     output_message(STRING_CANNOT_OPEN_FILE, filename);
194                     free(realname);
195                     return;
196                 }
197             }
198             import_registry_file(reg_file);
199             if (realname)
200             {
201                 free(realname);
202                 fclose(reg_file);
203             }
204             break;
205         }
206     case ACTION_DELETE:
207             delete_registry_key(argv[*i]);
208             break;
209     case ACTION_EXPORT: {
210             WCHAR *filename = argv[*i];
211             WCHAR *key_name = argv[++(*i)];
212 
213             if (key_name && *key_name)
214                 export_registry_key(filename, key_name, REG_FORMAT_5);
215             else
216                 export_registry_key(filename, NULL, REG_FORMAT_5);
217             break;
218         }
219     default:
220 #ifdef __REACTOS__
221         output_message(STRING_UNHANDLED_ACTION);
222 #else
223         error_exit(STRING_UNHANDLED_ACTION);
224 #endif
225         break;
226     }
227 }
228 
229 BOOL ProcessCmdLine(WCHAR *cmdline)
230 {
231     WCHAR **argv;
232     int argc, i;
233     REGEDIT_ACTION action = ACTION_ADD;
234 #ifdef __REACTOS__
235     BOOL silent = FALSE;
236 #endif
237 
238     argv = CommandLineToArgvW(cmdline, &argc);
239 
240     if (!argv)
241         return FALSE;
242 
243     if (argc == 1)
244     {
245         LocalFree(argv);
246         return FALSE;
247     }
248 
249     for (i = 1; i < argc; i++)
250     {
251         if (argv[i][0] != '/' && argv[i][0] != '-')
252             break; /* No flags specified. */
253 
254         if (!argv[i][1] && argv[i][0] == '-')
255             break; /* '-' is a filename. It indicates we should use stdin. */
256 
257         if (argv[i][1] && argv[i][2] && argv[i][2] != ':')
258             break; /* This is a file path beginning with '/'. */
259 
260         switch (towupper(argv[i][1]))
261         {
262         case '?':
263             error_exit(STRING_USAGE);
264             break;
265         case 'D':
266             action = ACTION_DELETE;
267             break;
268         case 'E':
269             action = ACTION_EXPORT;
270             break;
271         case 'C':
272         case 'L':
273         case 'M':
274         case 'R':
275             /* unhandled */;
276             break;
277         case 'S':
278 #ifdef __REACTOS__
279             silent = TRUE;
280             break;
281 #endif
282         case 'V':
283             /* ignored */;
284             break;
285         default:
286             output_message(STRING_INVALID_SWITCH, argv[i]);
287             error_exit(STRING_HELP);
288         }
289     }
290 
291     if (i == argc)
292     {
293         switch (action)
294         {
295         case ACTION_ADD:
296         case ACTION_EXPORT:
297             output_message(STRING_NO_FILENAME);
298             break;
299         case ACTION_DELETE:
300             output_message(STRING_NO_REG_KEY);
301             break;
302         }
303         error_exit(STRING_HELP);
304     }
305 
306     for (; i < argc; i++)
307 #ifdef __REACTOS__
308         PerformRegAction(action, argv, &i, silent);
309 #else
310         PerformRegAction(action, argv, &i);
311 #endif
312 
313     LocalFree(argv);
314 
315     return TRUE;
316 }
317