dlls/shlwapi/assoc.c

   1 /*
   2  * IQueryAssociations helper functions
   3  *
   4  * Copyright 2002 Jon Griffiths
   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 #include <stdarg.h>
  21 #include <assert.h>
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "winnls.h"
  26 #include "winreg.h"
  27 #include "objbase.h"
  28 #include "shlguid.h"
  29 #include "shlobj.h"
  30 #include "shlwapi.h"
  31 #include "wine/unicode.h"
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  35
  36 /* Default IQueryAssociations::Init() flags */
  37 #define SHLWAPI_DEF_ASSOCF (ASSOCF_INIT_BYEXENAME|ASSOCF_INIT_DEFAULTTOSTAR| \
  38                             ASSOCF_INIT_DEFAULTTOFOLDER)
  39
  40 /*************************************************************************
  41  * SHLWAPI_ParamAToW
  42  *
  43  * Internal helper function: Convert ASCII parameter to Unicode.
  44  */
  45 static BOOL SHLWAPI_ParamAToW(LPCSTR lpszParam, LPWSTR lpszBuff, DWORD dwLen,
  46                               LPWSTR* lpszOut)
  47 {
  48   if (lpszParam)
  49   {
  50     DWORD dwStrLen = MultiByteToWideChar(CP_ACP, 0, lpszParam, -1, NULL, 0);
  51
  52     if (dwStrLen < dwLen)
  53     {
  54       *lpszOut = lpszBuff; /* Use Buffer, it is big enough */
  55     }
  56     else
  57     {
  58       /* Create a new buffer big enough for the string */
  59       *lpszOut = HeapAlloc(GetProcessHeap(), 0,
  60                                    dwStrLen * sizeof(WCHAR));
  61       if (!*lpszOut)
  62         return FALSE;
  63     }
  64     MultiByteToWideChar(CP_ACP, 0, lpszParam, -1, *lpszOut, dwStrLen);
  65   }
  66   else
  67     *lpszOut = NULL;
  68   return TRUE;
  69 }
  70
  71 /*************************************************************************
  72  * AssocCreate  [SHLWAPI.@]
  73  *
  74  * Create a new IQueryAssociations object.
  75  *
  76  * PARAMS
  77  *  clsid       [I] CLSID of object
  78  *  refiid      [I] REFIID of interface
  79  *  lpInterface [O] Destination for the created IQueryAssociations object
  80  *
  81  * RETURNS
  82  *  Success: S_OK. lpInterface contains the new object.
  83  *  Failure: An HRESULT error code indicating the error.
  84  *
  85  * NOTES
  86  *  clsid  must be equal to CLSID_QueryAssociations and
  87  *  refiid must be equal to IID_IQueryAssociations, IID_IUnknown or this function will fail
  88  */
  89 HRESULT WINAPI AssocCreate(CLSID clsid, REFIID refiid, void **lpInterface)
  90 {
  91   TRACE("(%s,%s,%p)\n", debugstr_guid(&clsid), debugstr_guid(refiid),
  92         lpInterface);
  93
  94   if (!lpInterface)
  95     return E_INVALIDARG;
  96
  97   *(DWORD*)lpInterface = 0;
  98
  99   if (!IsEqualGUID(&clsid,  &CLSID_QueryAssociations))
 100     return CLASS_E_CLASSNOTAVAILABLE;
 101
 102   return SHCoCreateInstance( NULL, &clsid, NULL, refiid, lpInterface );
 103 }
 104
 105 /*************************************************************************
 106  * AssocQueryKeyW  [SHLWAPI.@]
 107  *
 108  * See AssocQueryKeyA.
 109  */
 110 HRESULT WINAPI AssocQueryKeyW(ASSOCF cfFlags, ASSOCKEY assockey, LPCWSTR pszAssoc,
 111                               LPCWSTR pszExtra, HKEY *phkeyOut)
 112 {
 113   HRESULT hRet;
 114   IQueryAssociations* lpAssoc;
 115
 116   TRACE("(0x%8x,0x%8x,%s,%s,%p)\n", cfFlags, assockey, debugstr_w(pszAssoc),
 117         debugstr_w(pszExtra), phkeyOut);
 118
 119   hRet = AssocCreate( CLSID_QueryAssociations, &IID_IQueryAssociations, (void **)&lpAssoc );
 120   if (FAILED(hRet)) return hRet;
 121
 122   cfFlags &= SHLWAPI_DEF_ASSOCF;
 123   hRet = IQueryAssociations_Init(lpAssoc, cfFlags, pszAssoc, NULL, NULL);
 124
 125   if (SUCCEEDED(hRet))
 126     hRet = IQueryAssociations_GetKey(lpAssoc, cfFlags, assockey, pszExtra, phkeyOut);
 127
 128   IQueryAssociations_Release(lpAssoc);
 129   return hRet;
 130 }
 131
 132 /*************************************************************************
 133  * AssocQueryKeyA  [SHLWAPI.@]
 134  *
 135  * Get a file association key from the registry.
 136  *
 137  * PARAMS
 138  *  cfFlags  [I] ASSOCF_ flags from "shlwapi.h"
 139  *  assockey [I] Type of key to get
 140  *  pszAssoc [I] Key name to search below
 141  *  pszExtra [I] Extra information about the key location
 142  *  phkeyOut [O] Destination for the association key
 143  *
 144  * RETURNS
 145  *  Success: S_OK. phkeyOut contains the key.
 146  *  Failure: An HRESULT error code indicating the error.
 147  */
 148 HRESULT WINAPI AssocQueryKeyA(ASSOCF cfFlags, ASSOCKEY assockey, LPCSTR pszAssoc,
 149                               LPCSTR pszExtra, HKEY *phkeyOut)
 150 {
 151   WCHAR szAssocW[MAX_PATH], *lpszAssocW = NULL;
 152   WCHAR szExtraW[MAX_PATH], *lpszExtraW = NULL;
 153   HRESULT hRet = E_OUTOFMEMORY;
 154
 155   TRACE("(0x%8x,0x%8x,%s,%s,%p)\n", cfFlags, assockey, debugstr_a(pszAssoc),
 156         debugstr_a(pszExtra), phkeyOut);
 157
 158   if (SHLWAPI_ParamAToW(pszAssoc, szAssocW, MAX_PATH, &lpszAssocW) &&
 159       SHLWAPI_ParamAToW(pszExtra, szExtraW, MAX_PATH, &lpszExtraW))
 160   {
 161     hRet = AssocQueryKeyW(cfFlags, assockey, lpszAssocW, lpszExtraW, phkeyOut);
 162   }
 163
 164   if (lpszAssocW != szAssocW)
 165     HeapFree(GetProcessHeap(), 0, lpszAssocW);
 166
 167   if (lpszExtraW != szExtraW)
 168     HeapFree(GetProcessHeap(), 0, lpszExtraW);
 169
 170   return hRet;
 171 }
 172
 173 /*************************************************************************
 174  * AssocQueryStringW  [SHLWAPI.@]
 175  *
 176  * See AssocQueryStringA.
 177  */
 178 HRESULT WINAPI AssocQueryStringW(ASSOCF cfFlags, ASSOCSTR str, LPCWSTR pszAssoc,
 179                                  LPCWSTR pszExtra, LPWSTR pszOut, DWORD *pcchOut)
 180 {
 181   HRESULT hRet;
 182   IQueryAssociations* lpAssoc;
 183
 184   TRACE("(0x%8x,0x%8x,%s,%s,%p,%p)\n", cfFlags, str, debugstr_w(pszAssoc),
 185         debugstr_w(pszExtra), pszOut, pcchOut);
 186
 187   if (!pcchOut)
 188     return E_UNEXPECTED;
 189
 190   hRet = AssocCreate( CLSID_QueryAssociations, &IID_IQueryAssociations, (void **)&lpAssoc );
 191   if (FAILED(hRet)) return hRet;
 192
 193   hRet = IQueryAssociations_Init(lpAssoc, cfFlags & SHLWAPI_DEF_ASSOCF,
 194                                  pszAssoc, NULL, NULL);
 195
 196   if (SUCCEEDED(hRet))
 197     hRet = IQueryAssociations_GetString(lpAssoc, cfFlags, str, pszExtra,
 198                                         pszOut, pcchOut);
 199
 200   IQueryAssociations_Release(lpAssoc);
 201   return hRet;
 202 }
 203
 204 /*************************************************************************
 205  * AssocQueryStringA  [SHLWAPI.@]
 206  *
 207  * Get a file association string from the registry.
 208  *
 209  * PARAMS
 210  *  cfFlags  [I] ASSOCF_ flags from "shlwapi.h"
 211  *  str      [I] Type of string to get (ASSOCSTR enum from "shlwapi.h")
 212  *  pszAssoc [I] Key name to search below
 213  *  pszExtra [I] Extra information about the string location
 214  *  pszOut   [O] Destination for the association string
 215  *  pcchOut  [O] Length of pszOut
 216  *
 217  * RETURNS
 218  *  Success: S_OK. pszOut contains the string, pcchOut contains its length.
 219  *  Failure: An HRESULT error code indicating the error.
 220  */
 221 HRESULT WINAPI AssocQueryStringA(ASSOCF cfFlags, ASSOCSTR str, LPCSTR pszAssoc,
 222                                  LPCSTR pszExtra, LPSTR pszOut, DWORD *pcchOut)
 223 {
 224   WCHAR szAssocW[MAX_PATH], *lpszAssocW = NULL;
 225   WCHAR szExtraW[MAX_PATH], *lpszExtraW = NULL;
 226   HRESULT hRet = E_OUTOFMEMORY;
 227
 228   TRACE("(0x%8x,0x%8x,%s,%s,%p,%p)\n", cfFlags, str, debugstr_a(pszAssoc),
 229         debugstr_a(pszExtra), pszOut, pcchOut);
 230
 231   if (!pcchOut)
 232     hRet = E_UNEXPECTED;
 233   else if (SHLWAPI_ParamAToW(pszAssoc, szAssocW, MAX_PATH, &lpszAssocW) &&
 234            SHLWAPI_ParamAToW(pszExtra, szExtraW, MAX_PATH, &lpszExtraW))
 235   {
 236     WCHAR szReturnW[MAX_PATH], *lpszReturnW = szReturnW;
 237     DWORD dwLenOut = *pcchOut;
 238
 239     if (dwLenOut >= MAX_PATH)
 240       lpszReturnW = HeapAlloc(GetProcessHeap(), 0,
 241                                       (dwLenOut + 1) * sizeof(WCHAR));
 242     else
 243       dwLenOut = sizeof(szReturnW) / sizeof(szReturnW[0]);
 244
 245     if (!lpszReturnW)
 246       hRet = E_OUTOFMEMORY;
 247     else
 248     {
 249       hRet = AssocQueryStringW(cfFlags, str, lpszAssocW, lpszExtraW,
 250                                lpszReturnW, &dwLenOut);
 251
 252       if (SUCCEEDED(hRet))
 253         dwLenOut = WideCharToMultiByte(CP_ACP, 0, lpszReturnW, -1,
 254                                        pszOut, *pcchOut, NULL, NULL);
 255
 256       *pcchOut = dwLenOut;
 257       if (lpszReturnW != szReturnW)
 258         HeapFree(GetProcessHeap(), 0, lpszReturnW);
 259     }
 260   }
 261
 262   if (lpszAssocW != szAssocW)
 263     HeapFree(GetProcessHeap(), 0, lpszAssocW);
 264   if (lpszExtraW != szExtraW)
 265     HeapFree(GetProcessHeap(), 0, lpszExtraW);
 266   return hRet;
 267 }
 268
 269 /*************************************************************************
 270  * AssocQueryStringByKeyW  [SHLWAPI.@]
 271  *
 272  * See AssocQueryStringByKeyA.
 273  */
 274 HRESULT WINAPI AssocQueryStringByKeyW(ASSOCF cfFlags, ASSOCSTR str, HKEY hkAssoc,
 275                                       LPCWSTR pszExtra, LPWSTR pszOut,
 276                                       DWORD *pcchOut)
 277 {
 278   HRESULT hRet;
 279   IQueryAssociations* lpAssoc;
 280
 281   TRACE("(0x%8x,0x%8x,%p,%s,%p,%p)\n", cfFlags, str, hkAssoc,
 282         debugstr_w(pszExtra), pszOut, pcchOut);
 283
 284   hRet = AssocCreate( CLSID_QueryAssociations, &IID_IQueryAssociations, (void **)&lpAssoc );
 285   if (FAILED(hRet)) return hRet;
 286
 287   cfFlags &= SHLWAPI_DEF_ASSOCF;
 288   hRet = IQueryAssociations_Init(lpAssoc, cfFlags, 0, hkAssoc, NULL);
 289
 290   if (SUCCEEDED(hRet))
 291     hRet = IQueryAssociations_GetString(lpAssoc, cfFlags, str, pszExtra,
 292                                         pszOut, pcchOut);
 293
 294   IQueryAssociations_Release(lpAssoc);
 295   return hRet;
 296 }
 297
 298 /*************************************************************************
 299  * AssocQueryStringByKeyA  [SHLWAPI.@]
 300  *
 301  * Get a file association string from the registry, given a starting key.
 302  *
 303  * PARAMS
 304  *  cfFlags  [I] ASSOCF_ flags from "shlwapi.h"
 305  *  str      [I] Type of string to get
 306  *  hkAssoc  [I] Key to search below
 307  *  pszExtra [I] Extra information about the string location
 308  *  pszOut   [O] Destination for the association string
 309  *  pcchOut  [O] Length of pszOut
 310  *
 311  * RETURNS
 312  *  Success: S_OK. pszOut contains the string, pcchOut contains its length.
 313  *  Failure: An HRESULT error code indicating the error.
 314  */
 315 HRESULT WINAPI AssocQueryStringByKeyA(ASSOCF cfFlags, ASSOCSTR str, HKEY hkAssoc,
 316                                       LPCSTR pszExtra, LPSTR pszOut,
 317                                       DWORD *pcchOut)
 318 {
 319   WCHAR szExtraW[MAX_PATH], *lpszExtraW = szExtraW;
 320   WCHAR szReturnW[MAX_PATH], *lpszReturnW = szReturnW;
 321   HRESULT hRet = E_OUTOFMEMORY;
 322
 323   TRACE("(0x%8x,0x%8x,%p,%s,%p,%p)\n", cfFlags, str, hkAssoc,
 324         debugstr_a(pszExtra), pszOut, pcchOut);
 325
 326   if (!pcchOut)
 327     hRet = E_INVALIDARG;
 328   else if (SHLWAPI_ParamAToW(pszExtra, szExtraW, MAX_PATH, &lpszExtraW))
 329   {
 330     DWORD dwLenOut = *pcchOut;
 331     if (dwLenOut >= MAX_PATH)
 332       lpszReturnW = HeapAlloc(GetProcessHeap(), 0,
 333                                       (dwLenOut + 1) * sizeof(WCHAR));
 334
 335     if (lpszReturnW)
 336     {
 337       hRet = AssocQueryStringByKeyW(cfFlags, str, hkAssoc, lpszExtraW,
 338                                     lpszReturnW, &dwLenOut);
 339
 340       if (SUCCEEDED(hRet))
 341         WideCharToMultiByte(CP_ACP,0,szReturnW,-1,pszOut,dwLenOut,0,0);
 342       *pcchOut = dwLenOut;
 343
 344       if (lpszReturnW != szReturnW)
 345         HeapFree(GetProcessHeap(), 0, lpszReturnW);
 346     }
 347   }
 348
 349   if (lpszExtraW != szExtraW)
 350     HeapFree(GetProcessHeap(), 0, lpszExtraW);
 351   return hRet;
 352 }
 353
 354
 355 /**************************************************************************
 356  *  AssocIsDangerous  (SHLWAPI.@)
 357  *
 358  * Determine if a file association is dangerous (potentially malware).
 359  *
 360  * PARAMS
 361  *  lpszAssoc [I] Name of file or file extension to check.
 362  *
 363  * RETURNS
 364  *  TRUE, if lpszAssoc may potentially be malware (executable),
 365  *  FALSE, Otherwise.
 366  */
 367 BOOL WINAPI AssocIsDangerous(LPCWSTR lpszAssoc)
 368 {
 369     FIXME("%s\n", debugstr_w(lpszAssoc));
 370     return FALSE;
 371 }