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 PSStringFromPropertyKey(REFPROPERTYKEY pkey, LPWSTR psz, UINT cch)
  70 {
  71     static const WCHAR guid_fmtW[] = {'{','%','0','8','X','-','%','0','4','X','-',
  72                                       '%','0','4','X','-','%','0','2','X','%','0','2','X','-',
  73                                       '%','0','2','X','%','0','2','X','%','0','2','X',
  74                                       '%','0','2','X','%','0','2','X','%','0','2','X','}',0};
  75     static const WCHAR pid_fmtW[] = {'%','u',0};
  76
  77     WCHAR pidW[PKEY_PIDSTR_MAX + 1];
  78     LPWSTR p = psz;
  79     int len;
  80
  81     TRACE("(%p, %p, %u)\n", pkey, psz, cch);
  82
  83     if (!psz)
  84         return E_POINTER;
  85
  86     /* GUIDSTRING_MAX accounts for null terminator, +1 for space character. */
  87     if (cch <= GUIDSTRING_MAX + 1)
  88         return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
  89
  90     if (!pkey)
  91     {
  92         psz[0] = '\0';
  93         return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
  94     }
  95
  96     sprintfW(psz, guid_fmtW, pkey->fmtid.Data1, pkey->fmtid.Data2,
  97              pkey->fmtid.Data3, pkey->fmtid.Data4[0], pkey->fmtid.Data4[1],
  98              pkey->fmtid.Data4[2], pkey->fmtid.Data4[3], pkey->fmtid.Data4[4],
  99              pkey->fmtid.Data4[5], pkey->fmtid.Data4[6], pkey->fmtid.Data4[7]);
 100
 101     /* Overwrite the null terminator with the space character. */
 102     p += GUIDSTRING_MAX - 1;
 103     *p++ = ' ';
 104     cch -= GUIDSTRING_MAX - 1 + 1;
 105
 106     len = sprintfW(pidW, pid_fmtW, pkey->pid);
 107
 108     if (cch >= len + 1)
 109     {
 110         strcpyW(p, pidW);
 111         return S_OK;
 112     }
 113     else
 114     {
 115         WCHAR *ptr = pidW + len - 1;
 116
 117         psz[0] = '\0';
 118         *p++ = '\0';
 119         cch--;
 120
 121         /* Replicate a quirk of the native implementation where the contents
 122          * of the property ID string are written backwards to the output
 123          * buffer, skipping the rightmost digit. */
 124         if (cch)
 125         {
 126             ptr--;
 127             while (cch--)
 128                 *p++ = *ptr--;
 129         }
 130
 131         return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
 132     }
 133 }
 134
 135 static const BYTE hex2bin[] =
 136 {
 137     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x00 */
 138     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x10 */
 139     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x20 */
 140     0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0,        /* 0x30 */
 141     0,10,11,12,13,14,15,0,0,0,0,0,0,0,0,0,  /* 0x40 */
 142     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x50 */
 143     0,10,11,12,13,14,15                     /* 0x60 */
 144 };
 145
 146 static BOOL validate_indices(LPCWSTR s, int min, int max)
 147 {
 148     int i;
 149
 150     for (i = min; i <= max; i++)
 151     {
 152         if (!s[i])
 153             return FALSE;
 154
 155         if (i == 0)
 156         {
 157             if (s[i] != '{')
 158                 return FALSE;
 159         }
 160         else if (i == 9 || i == 14 || i == 19 || i == 24)
 161         {
 162             if (s[i] != '-')
 163                 return FALSE;
 164         }
 165         else if (i == 37)
 166         {
 167             if (s[i] != '}')
 168                 return FALSE;
 169         }
 170         else
 171         {
 172             if (s[i] > 'f' || (!hex2bin[s[i]] && s[i] != '0'))
 173                 return FALSE;
 174         }
 175     }
 176
 177     return TRUE;
 178 }
 179
 180 /* Adapted from CLSIDFromString helper in dlls/ole32/compobj.c and
 181  * UuidFromString in dlls/rpcrt4/rpcrt4_main.c. */
 182 static BOOL string_to_guid(LPCWSTR s, LPGUID id)
 183 {
 184     /* in form {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX} */
 185
 186     if (!validate_indices(s, 0, 8)) return FALSE;
 187     id->Data1 = (hex2bin[s[1]] << 28 | hex2bin[s[2]] << 24 | hex2bin[s[3]] << 20 | hex2bin[s[4]] << 16 |
 188                  hex2bin[s[5]] << 12 | hex2bin[s[6]] << 8  | hex2bin[s[7]] << 4  | hex2bin[s[8]]);
 189     if (!validate_indices(s, 9, 14)) return FALSE;
 190     id->Data2 = hex2bin[s[10]] << 12 | hex2bin[s[11]] << 8 | hex2bin[s[12]] << 4 | hex2bin[s[13]];
 191     if (!validate_indices(s, 15, 19)) return FALSE;
 192     id->Data3 = hex2bin[s[15]] << 12 | hex2bin[s[16]] << 8 | hex2bin[s[17]] << 4 | hex2bin[s[18]];
 193
 194     /* these are just sequential bytes */
 195
 196     if (!validate_indices(s, 20, 21)) return FALSE;
 197     id->Data4[0] = hex2bin[s[20]] << 4 | hex2bin[s[21]];
 198     if (!validate_indices(s, 22, 24)) return FALSE;
 199     id->Data4[1] = hex2bin[s[22]] << 4 | hex2bin[s[23]];
 200
 201     if (!validate_indices(s, 25, 26)) return FALSE;
 202     id->Data4[2] = hex2bin[s[25]] << 4 | hex2bin[s[26]];
 203     if (!validate_indices(s, 27, 28)) return FALSE;
 204     id->Data4[3] = hex2bin[s[27]] << 4 | hex2bin[s[28]];
 205     if (!validate_indices(s, 29, 30)) return FALSE;
 206     id->Data4[4] = hex2bin[s[29]] << 4 | hex2bin[s[30]];
 207     if (!validate_indices(s, 31, 32)) return FALSE;
 208     id->Data4[5] = hex2bin[s[31]] << 4 | hex2bin[s[32]];
 209     if (!validate_indices(s, 33, 34)) return FALSE;
 210     id->Data4[6] = hex2bin[s[33]] << 4 | hex2bin[s[34]];
 211     if (!validate_indices(s, 35, 37)) return FALSE;
 212     id->Data4[7] = hex2bin[s[35]] << 4 | hex2bin[s[36]];
 213
 214     return TRUE;
 215 }
 216
 217 HRESULT WINAPI PSPropertyKeyFromString(LPCWSTR pszString, PROPERTYKEY *pkey)
 218 {
 219     int has_minus = 0, has_comma = 0;
 220
 221     TRACE("(%s, %p)\n", debugstr_w(pszString), pkey);
 222
 223     if (!pszString || !pkey)
 224         return E_POINTER;
 225
 226     memset(pkey, 0, sizeof(PROPERTYKEY));
 227
 228     if (!string_to_guid(pszString, &pkey->fmtid))
 229         return E_INVALIDARG;
 230
 231     pszString += GUIDSTRING_MAX - 1;
 232
 233     if (!*pszString)
 234         return E_INVALIDARG;
 235
 236     /* Only the space seems to be recognized as whitespace. The comma is only
 237      * recognized once and processing terminates if another comma is found. */
 238     while (*pszString == ' ' || *pszString == ',')
 239     {
 240         if (*pszString == ',')
 241         {
 242             if (has_comma)
 243                 return S_OK;
 244             else
 245                 has_comma = 1;
 246         }
 247         pszString++;
 248     }
 249
 250     if (!*pszString)
 251         return E_INVALIDARG;
 252
 253     /* Only two minus signs are recognized if no comma is detected. The first
 254      * sign is ignored, and the second is interpreted. If a comma is detected
 255      * before the minus sign, then only one minus sign counts, and property ID
 256      * interpretation begins with the next character. */
 257     if (has_comma)
 258     {
 259         if (*pszString == '-')
 260         {
 261             has_minus = 1;
 262             pszString++;
 263         }
 264     }
 265     else
 266     {
 267         if (*pszString == '-')
 268             pszString++;
 269
 270         /* Skip any intermediate spaces after the first minus sign. */
 271         while (*pszString == ' ')
 272             pszString++;
 273
 274         if (*pszString == '-')
 275         {
 276             has_minus = 1;
 277             pszString++;
 278         }
 279
 280         /* Skip any remaining spaces after minus sign. */
 281         while (*pszString == ' ')
 282             pszString++;
 283     }
 284
 285     /* Overflow is not checked. */
 286     while (isdigitW(*pszString))
 287     {
 288         pkey->pid *= 10;
 289         pkey->pid += (*pszString - '0');
 290         pszString++;
 291     }
 292
 293     if (has_minus)
 294         pkey->pid = ~pkey->pid + 1;
 295
 296     return S_OK;
 297 }