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 PSStringFromPropertyKey(REFPROPERTYKEY pkey, LPWSTR psz, UINT cch)
  76 {
  77     static const WCHAR guid_fmtW[] = {'{','%','0','8','X','-','%','0','4','X','-',
  78                                       '%','0','4','X','-','%','0','2','X','%','0','2','X','-',
  79                                       '%','0','2','X','%','0','2','X','%','0','2','X',
  80                                       '%','0','2','X','%','0','2','X','%','0','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] != '0'))
 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 - '0');
 296         pszString++;
 297     }
 298
 299     if (has_minus)
 300         pkey->pid = ~pkey->pid + 1;
 301
 302     return S_OK;
 303 }