dlls/propsys/propsys_main.c

   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 PSRefreshPropertySchema(void)
  76 {
  77     FIXME("\n");
  78     return S_OK;
  79 }
  80
  81 HRESULT WINAPI PSStringFromPropertyKey(REFPROPERTYKEY pkey, LPWSTR psz, UINT cch)
  82 {
  83     static const WCHAR guid_fmtW[] = {'{','%','0','8','X','-','%','0','4','X','-',
  84                                       '%','0','4','X','-','%','0','2','X','%','0','2','X','-',
  85                                       '%','0','2','X','%','0','2','X','%','0','2','X',
  86                                       '%','0','2','X','%','0','2','X','%','0','2','X','}',0};
  87     static const WCHAR pid_fmtW[] = {'%','u',0};
  88
  89     WCHAR pidW[PKEY_PIDSTR_MAX + 1];
  90     LPWSTR p = psz;
  91     int len;
  92
  93     TRACE("(%p, %p, %u)\n", pkey, psz, cch);
  94
  95     if (!psz)
  96         return E_POINTER;
  97
  98     /* GUIDSTRING_MAX accounts for null terminator, +1 for space character. */
  99     if (cch <= GUIDSTRING_MAX + 1)
 100         return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
 101
 102     if (!pkey)
 103     {
 104         psz[0] = '\0';
 105         return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
 106     }
 107
 108     sprintfW(psz, guid_fmtW, pkey->fmtid.Data1, pkey->fmtid.Data2,
 109              pkey->fmtid.Data3, pkey->fmtid.Data4[0], pkey->fmtid.Data4[1],
 110              pkey->fmtid.Data4[2], pkey->fmtid.Data4[3], pkey->fmtid.Data4[4],
 111              pkey->fmtid.Data4[5], pkey->fmtid.Data4[6], pkey->fmtid.Data4[7]);
 112
 113     /* Overwrite the null terminator with the space character. */
 114     p += GUIDSTRING_MAX - 1;
 115     *p++ = ' ';
 116     cch -= GUIDSTRING_MAX - 1 + 1;
 117
 118     len = sprintfW(pidW, pid_fmtW, pkey->pid);
 119
 120     if (cch >= len + 1)
 121     {
 122         strcpyW(p, pidW);
 123         return S_OK;
 124     }
 125     else
 126     {
 127         WCHAR *ptr = pidW + len - 1;
 128
 129         psz[0] = '\0';
 130         *p++ = '\0';
 131         cch--;
 132
 133         /* Replicate a quirk of the native implementation where the contents
 134          * of the property ID string are written backwards to the output
 135          * buffer, skipping the rightmost digit. */
 136         if (cch)
 137         {
 138             ptr--;
 139             while (cch--)
 140                 *p++ = *ptr--;
 141         }
 142
 143         return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
 144     }
 145 }
 146
 147 static const BYTE hex2bin[] =
 148 {
 149     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x00 */
 150     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x10 */
 151     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x20 */
 152     0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0,        /* 0x30 */
 153     0,10,11,12,13,14,15,0,0,0,0,0,0,0,0,0,  /* 0x40 */
 154     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x50 */
 155     0,10,11,12,13,14,15                     /* 0x60 */
 156 };
 157
 158 static BOOL validate_indices(LPCWSTR s, int min, int max)
 159 {
 160     int i;
 161
 162     for (i = min; i <= max; i++)
 163     {
 164         if (!s[i])
 165             return FALSE;
 166
 167         if (i == 0)
 168         {
 169             if (s[i] != '{')
 170                 return FALSE;
 171         }
 172         else if (i == 9 || i == 14 || i == 19 || i == 24)
 173         {
 174             if (s[i] != '-')
 175                 return FALSE;
 176         }
 177         else if (i == 37)
 178         {
 179             if (s[i] != '}')
 180                 return FALSE;
 181         }
 182         else
 183         {
 184             if (s[i] > 'f' || (!hex2bin[s[i]] && s[i] != '0'))
 185                 return FALSE;
 186         }
 187     }
 188
 189     return TRUE;
 190 }
 191
 192 /* Adapted from CLSIDFromString helper in dlls/ole32/compobj.c and
 193  * UuidFromString in dlls/rpcrt4/rpcrt4_main.c. */
 194 static BOOL string_to_guid(LPCWSTR s, LPGUID id)
 195 {
 196     /* in form {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX} */
 197
 198     if (!validate_indices(s, 0, 8)) return FALSE;
 199     id->Data1 = (hex2bin[s[1]] << 28 | hex2bin[s[2]] << 24 | hex2bin[s[3]] << 20 | hex2bin[s[4]] << 16 |
 200                  hex2bin[s[5]] << 12 | hex2bin[s[6]] << 8  | hex2bin[s[7]] << 4  | hex2bin[s[8]]);
 201     if (!validate_indices(s, 9, 14)) return FALSE;
 202     id->Data2 = hex2bin[s[10]] << 12 | hex2bin[s[11]] << 8 | hex2bin[s[12]] << 4 | hex2bin[s[13]];
 203     if (!validate_indices(s, 15, 19)) return FALSE;
 204     id->Data3 = hex2bin[s[15]] << 12 | hex2bin[s[16]] << 8 | hex2bin[s[17]] << 4 | hex2bin[s[18]];
 205
 206     /* these are just sequential bytes */
 207
 208     if (!validate_indices(s, 20, 21)) return FALSE;
 209     id->Data4[0] = hex2bin[s[20]] << 4 | hex2bin[s[21]];
 210     if (!validate_indices(s, 22, 24)) return FALSE;
 211     id->Data4[1] = hex2bin[s[22]] << 4 | hex2bin[s[23]];
 212
 213     if (!validate_indices(s, 25, 26)) return FALSE;
 214     id->Data4[2] = hex2bin[s[25]] << 4 | hex2bin[s[26]];
 215     if (!validate_indices(s, 27, 28)) return FALSE;
 216     id->Data4[3] = hex2bin[s[27]] << 4 | hex2bin[s[28]];
 217     if (!validate_indices(s, 29, 30)) return FALSE;
 218     id->Data4[4] = hex2bin[s[29]] << 4 | hex2bin[s[30]];
 219     if (!validate_indices(s, 31, 32)) return FALSE;
 220     id->Data4[5] = hex2bin[s[31]] << 4 | hex2bin[s[32]];
 221     if (!validate_indices(s, 33, 34)) return FALSE;
 222     id->Data4[6] = hex2bin[s[33]] << 4 | hex2bin[s[34]];
 223     if (!validate_indices(s, 35, 37)) return FALSE;
 224     id->Data4[7] = hex2bin[s[35]] << 4 | hex2bin[s[36]];
 225
 226     return TRUE;
 227 }
 228
 229 HRESULT WINAPI PSPropertyKeyFromString(LPCWSTR pszString, PROPERTYKEY *pkey)
 230 {
 231     int has_minus = 0, has_comma = 0;
 232
 233     TRACE("(%s, %p)\n", debugstr_w(pszString), pkey);
 234
 235     if (!pszString || !pkey)
 236         return E_POINTER;
 237
 238     memset(pkey, 0, sizeof(PROPERTYKEY));
 239
 240     if (!string_to_guid(pszString, &pkey->fmtid))
 241         return E_INVALIDARG;
 242
 243     pszString += GUIDSTRING_MAX - 1;
 244
 245     if (!*pszString)
 246         return E_INVALIDARG;
 247
 248     /* Only the space seems to be recognized as whitespace. The comma is only
 249      * recognized once and processing terminates if another comma is found. */
 250     while (*pszString == ' ' || *pszString == ',')
 251     {
 252         if (*pszString == ',')
 253         {
 254             if (has_comma)
 255                 return S_OK;
 256             else
 257                 has_comma = 1;
 258         }
 259         pszString++;
 260     }
 261
 262     if (!*pszString)
 263         return E_INVALIDARG;
 264
 265     /* Only two minus signs are recognized if no comma is detected. The first
 266      * sign is ignored, and the second is interpreted. If a comma is detected
 267      * before the minus sign, then only one minus sign counts, and property ID
 268      * interpretation begins with the next character. */
 269     if (has_comma)
 270     {
 271         if (*pszString == '-')
 272         {
 273             has_minus = 1;
 274             pszString++;
 275         }
 276     }
 277     else
 278     {
 279         if (*pszString == '-')
 280             pszString++;
 281
 282         /* Skip any intermediate spaces after the first minus sign. */
 283         while (*pszString == ' ')
 284             pszString++;
 285
 286         if (*pszString == '-')
 287         {
 288             has_minus = 1;
 289             pszString++;
 290         }
 291
 292         /* Skip any remaining spaces after minus sign. */
 293         while (*pszString == ' ')
 294             pszString++;
 295     }
 296
 297     /* Overflow is not checked. */
 298     while (isdigitW(*pszString))
 299     {
 300         pkey->pid *= 10;
 301         pkey->pid += (*pszString - '0');
 302         pszString++;
 303     }
 304
 305     if (has_minus)
 306         pkey->pid = ~pkey->pid + 1;
 307
 308     return S_OK;
 309 }