1 /*
2 * propsys main
3 *
4 * Copyright 1997, 2002 Alexandre Julliard
5 * Copyright 2008 James Hawkins
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 */
21
22 #include "config.h"
23
24 #include <stdarg.h>
25
26 #include "windef.h"
27 #include "winbase.h"
28 #include "objbase.h"
29 #include "propsys.h"
30 #include "wine/debug.h"
31 #include "wine/unicode.h"
32
33 WINE_DEFAULT_DEBUG_CHANNEL(propsys);
34
35 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
36 {
37 TRACE("(0x%p, %d, %p)\n", hinstDLL, fdwReason, lpvReserved);
38
39 switch (fdwReason)
40 {
41 case DLL_WINE_PREATTACH:
42 return FALSE; /* prefer native version */
43 case DLL_PROCESS_ATTACH:
44 DisableThreadLibraryCalls(hinstDLL);
45 break;
46 case DLL_PROCESS_DETACH:
47 break;
48 default:
49 break;
50 }
51
52 return TRUE;
53 }
54
55 HRESULT WINAPI PSRegisterPropertySchema(PCWSTR path)
56 {
57 FIXME("%s stub\n", debugstr_w(path));
58
59 return S_OK;
60 }
61
62 HRESULT WINAPI PSUnregisterPropertySchema(PCWSTR path)
63 {
64 FIXME("%s stub\n", debugstr_w(path));
65
66 return E_NOTIMPL;
67 }
68
69 HRESULT WINAPI PSGetPropertyDescription(REFPROPERTYKEY propkey, REFIID riid, void **ppv)
70 {
71 FIXME("%p, %p, %p\n", propkey, riid, ppv);
72 return E_NOTIMPL;
73 }
74
75 HRESULT WINAPI PSStringFromPropertyKey(REFPROPERTYKEY pkey, LPWSTR psz, UINT cch)
76 {
77 static const WCHAR guid_fmtW[] = {'{','%','','8','X','-','%','','4','X','-',
78 '%','','4','X','-','%','','2','X','%','','2','X','-',
79 '%','','2','X','%','','2','X','%','','2','X',
80 '%','','2','X','%','','2','X','%','','2','X','}',0};
81 static const WCHAR pid_fmtW[] = {'%','u',0};
82
83 WCHAR pidW[PKEY_PIDSTR_MAX + 1];
84 LPWSTR p = psz;
85 int len;
86
87 TRACE("(%p, %p, %u)\n", pkey, psz, cch);
88
89 if (!psz)
90 return E_POINTER;
91
92 /* GUIDSTRING_MAX accounts for null terminator, +1 for space character. */
93 if (cch <= GUIDSTRING_MAX + 1)
94 return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
95
96 if (!pkey)
97 {
98 psz[0] = '\0';
99 return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
100 }
101
102 sprintfW(psz, guid_fmtW, pkey->fmtid.Data1, pkey->fmtid.Data2,
103 pkey->fmtid.Data3, pkey->fmtid.Data4[0], pkey->fmtid.Data4[1],
104 pkey->fmtid.Data4[2], pkey->fmtid.Data4[3], pkey->fmtid.Data4[4],
105 pkey->fmtid.Data4[5], pkey->fmtid.Data4[6], pkey->fmtid.Data4[7]);
106
107 /* Overwrite the null terminator with the space character. */
108 p += GUIDSTRING_MAX - 1;
109 *p++ = ' ';
110 cch -= GUIDSTRING_MAX - 1 + 1;
111
112 len = sprintfW(pidW, pid_fmtW, pkey->pid);
113
114 if (cch >= len + 1)
115 {
116 strcpyW(p, pidW);
117 return S_OK;
118 }
119 else
120 {
121 WCHAR *ptr = pidW + len - 1;
122
123 psz[0] = '\0';
124 *p++ = '\0';
125 cch--;
126
127 /* Replicate a quirk of the native implementation where the contents
128 * of the property ID string are written backwards to the output
129 * buffer, skipping the rightmost digit. */
130 if (cch)
131 {
132 ptr--;
133 while (cch--)
134 *p++ = *ptr--;
135 }
136
137 return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
138 }
139 }
140
141 static const BYTE hex2bin[] =
142 {
143 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x00 */
144 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x10 */
145 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x20 */
146 0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0, /* 0x30 */
147 0,10,11,12,13,14,15,0,0,0,0,0,0,0,0,0, /* 0x40 */
148 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x50 */
149 0,10,11,12,13,14,15 /* 0x60 */
150 };
151
152 static BOOL validate_indices(LPCWSTR s, int min, int max)
153 {
154 int i;
155
156 for (i = min; i <= max; i++)
157 {
158 if (!s[i])
159 return FALSE;
160
161 if (i == 0)
162 {
163 if (s[i] != '{')
164 return FALSE;
165 }
166 else if (i == 9 || i == 14 || i == 19 || i == 24)
167 {
168 if (s[i] != '-')
169 return FALSE;
170 }
171 else if (i == 37)
172 {
173 if (s[i] != '}')
174 return FALSE;
175 }
176 else
177 {
178 if (s[i] > 'f' || (!hex2bin[s[i]] && s[i] != ''))
179 return FALSE;
180 }
181 }
182
183 return TRUE;
184 }
185
186 /* Adapted from CLSIDFromString helper in dlls/ole32/compobj.c and
187 * UuidFromString in dlls/rpcrt4/rpcrt4_main.c. */
188 static BOOL string_to_guid(LPCWSTR s, LPGUID id)
189 {
190 /* in form {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX} */
191
192 if (!validate_indices(s, 0, 8)) return FALSE;
193 id->Data1 = (hex2bin[s[1]] << 28 | hex2bin[s[2]] << 24 | hex2bin[s[3]] << 20 | hex2bin[s[4]] << 16 |
194 hex2bin[s[5]] << 12 | hex2bin[s[6]] << 8 | hex2bin[s[7]] << 4 | hex2bin[s[8]]);
195 if (!validate_indices(s, 9, 14)) return FALSE;
196 id->Data2 = hex2bin[s[10]] << 12 | hex2bin[s[11]] << 8 | hex2bin[s[12]] << 4 | hex2bin[s[13]];
197 if (!validate_indices(s, 15, 19)) return FALSE;
198 id->Data3 = hex2bin[s[15]] << 12 | hex2bin[s[16]] << 8 | hex2bin[s[17]] << 4 | hex2bin[s[18]];
199
200 /* these are just sequential bytes */
201
202 if (!validate_indices(s, 20, 21)) return FALSE;
203 id->Data4[0] = hex2bin[s[20]] << 4 | hex2bin[s[21]];
204 if (!validate_indices(s, 22, 24)) return FALSE;
205 id->Data4[1] = hex2bin[s[22]] << 4 | hex2bin[s[23]];
206
207 if (!validate_indices(s, 25, 26)) return FALSE;
208 id->Data4[2] = hex2bin[s[25]] << 4 | hex2bin[s[26]];
209 if (!validate_indices(s, 27, 28)) return FALSE;
210 id->Data4[3] = hex2bin[s[27]] << 4 | hex2bin[s[28]];
211 if (!validate_indices(s, 29, 30)) return FALSE;
212 id->Data4[4] = hex2bin[s[29]] << 4 | hex2bin[s[30]];
213 if (!validate_indices(s, 31, 32)) return FALSE;
214 id->Data4[5] = hex2bin[s[31]] << 4 | hex2bin[s[32]];
215 if (!validate_indices(s, 33, 34)) return FALSE;
216 id->Data4[6] = hex2bin[s[33]] << 4 | hex2bin[s[34]];
217 if (!validate_indices(s, 35, 37)) return FALSE;
218 id->Data4[7] = hex2bin[s[35]] << 4 | hex2bin[s[36]];
219
220 return TRUE;
221 }
222
223 HRESULT WINAPI PSPropertyKeyFromString(LPCWSTR pszString, PROPERTYKEY *pkey)
224 {
225 int has_minus = 0, has_comma = 0;
226
227 TRACE("(%s, %p)\n", debugstr_w(pszString), pkey);
228
229 if (!pszString || !pkey)
230 return E_POINTER;
231
232 memset(pkey, 0, sizeof(PROPERTYKEY));
233
234 if (!string_to_guid(pszString, &pkey->fmtid))
235 return E_INVALIDARG;
236
237 pszString += GUIDSTRING_MAX - 1;
238
239 if (!*pszString)
240 return E_INVALIDARG;
241
242 /* Only the space seems to be recognized as whitespace. The comma is only
243 * recognized once and processing terminates if another comma is found. */
244 while (*pszString == ' ' || *pszString == ',')
245 {
246 if (*pszString == ',')
247 {
248 if (has_comma)
249 return S_OK;
250 else
251 has_comma = 1;
252 }
253 pszString++;
254 }
255
256 if (!*pszString)
257 return E_INVALIDARG;
258
259 /* Only two minus signs are recognized if no comma is detected. The first
260 * sign is ignored, and the second is interpreted. If a comma is detected
261 * before the minus sign, then only one minus sign counts, and property ID
262 * interpretation begins with the next character. */
263 if (has_comma)
264 {
265 if (*pszString == '-')
266 {
267 has_minus = 1;
268 pszString++;
269 }
270 }
271 else
272 {
273 if (*pszString == '-')
274 pszString++;
275
276 /* Skip any intermediate spaces after the first minus sign. */
277 while (*pszString == ' ')
278 pszString++;
279
280 if (*pszString == '-')
281 {
282 has_minus = 1;
283 pszString++;
284 }
285
286 /* Skip any remaining spaces after minus sign. */
287 while (*pszString == ' ')
288 pszString++;
289 }
290
291 /* Overflow is not checked. */
292 while (isdigitW(*pszString))
293 {
294 pkey->pid *= 10;
295 pkey->pid += (*pszString - '');
296 pszString++;
297 }
298
299 if (has_minus)
300 pkey->pid = ~pkey->pid + 1;
301
302 return S_OK;
303 }
304
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