[PATCH v2 1/2] fix function GetAllUsersProfileDirectoryW

[纯真的电灯泡]

From: 纯真的电灯泡

---
 dlls/userenv/userenv_main.c | 62 +++++++++++++++++++++++++++++++++++--
 1 file changed, 59 insertions(+), 3 deletions(-)

diff --git a/dlls/userenv/userenv_main.c b/dlls/userenv/userenv_main.c
index cadb45c1a74..3e71a88771f 100644
--- a/dlls/userenv/userenv_main.c
+++ b/dlls/userenv/userenv_main.c
@@ -587,10 +587,66 @@ BOOL WINAPI GetAllUsersProfileDirectoryA( LPSTR lpProfileDir, LPDWORD lpcchSize
     return FALSE;
 }

-BOOL WINAPI GetAllUsersProfileDirectoryW( LPWSTR lpProfileDir, LPDWORD lpcchSize )
+BOOL WINAPI GetAllUsersProfileDirectoryW(LPWSTR lpProfileDir, LPDWORD lpcchSize)
 {
-    FIXME("%p %p\n", lpProfileDir, lpcchSize);
-    return FALSE;
+    LONG l;
+    HKEY key;
+    BOOL ret = FALSE;
+    DWORD len = 0, expanded_len;
+    LPWSTR unexpanded_profiles_dir = NULL;
+
+    TRACE("%p %p\n", lpProfilesDir, lpcchSize);
+
+    if (!lpcchSize)
+    {
+        SetLastError(ERROR_INVALID_PARAMETER);
+        return FALSE;
+    }
+
+    l = RegOpenKeyExW(HKEY_LOCAL_MACHINE,
+                      L"Software\Microsoft\Windows NT\CurrentVersion\ProfileList",
+                      0, KEY_READ, &key);
+    if (l)
+    {
+        SetLastError(l);
+        return FALSE;
+    }
+    l = RegQueryValueExW(key, L"ProgramData", NULL, NULL, NULL, &len);
+    if (l)
+    {
+        SetLastError(l);
+        goto end;
+    }
+    unexpanded_profiles_dir = HeapAlloc(GetProcessHeap(), 0, len);
+    if (!unexpanded_profiles_dir)
+    {
+        SetLastError(ERROR_OUTOFMEMORY);
+        goto end;
+    }
+    l = RegQueryValueExW(key, L"ProgramData", NULL, NULL,
+                         (BYTE *)unexpanded_profiles_dir, &len);
+    if (l)
+    {
+        SetLastError(l);
+        goto end;
+    }
+    expanded_len = ExpandEnvironmentStringsW(unexpanded_profiles_dir, NULL, 0);
+    /* The returned length doesn't include the NULL terminator. */
+    if (*lpcchSize < expanded_len - 1 || !lpProfilesDir)
+    {
+        *lpcchSize = expanded_len - 1;
+        SetLastError(ERROR_INSUFFICIENT_BUFFER);
+        goto end;
+    }
+    *lpcchSize = expanded_len - 1;
+    /* The return value is also the expected length. */
+    ret = ExpandEnvironmentStringsW(unexpanded_profiles_dir, lpProfilesDir,
+                                    expanded_len) -
+          1;
+end:
+    HeapFree(GetProcessHeap(), 0, unexpanded_profiles_dir);
+    RegCloseKey(key);
+    return ret;
 }

BOOL WINAPI GetProfileType( DWORD *pdwFlags )