X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/57c208c5759da71a637f0f0f5b7d3dc3eda09c02..2d9cdc4b6947fa5fb05aca64673ca170c66141cf:/src/msw/registry.cpp

diff --git a/src/msw/registry.cpp b/src/msw/registry.cpp
index be45070aec..099b376cfd 100644
--- a/src/msw/registry.cpp
+++ b/src/msw/registry.cpp
@@ -427,6 +427,18 @@ bool wxRegKey::DeleteSelf()
     }
   }
 
+  // prevent a buggy program from erasing one of the root registry keys or an
+  // immediate subkey (i.e. one which doesn't have '\\' inside) of any other
+  // key except HKCR (HKCR has some "deleteable" subkeys)
+  if ( m_strKey.IsEmpty() || (m_hRootKey != HKCR &&
+       m_strKey.Find(REG_SEPARATOR) == wxNOT_FOUND) ) {
+      wxLogError(_("Registry key '%s' is needed for normal system operation,\n"
+                   "deleting it will leave your system in unusable state:\n"
+                   "operation aborted."), GetFullName(this));
+
+      return FALSE;
+  }
+
   // we can't delete keys while enumerating because it confuses GetNextKey, so
   // we first save the key names and then delete them all
   wxArrayString astrSubkeys;
@@ -544,10 +556,10 @@ bool wxRegKey::HasSubKey(const char *szKey) const
     return FALSE;
 }
 
-wxRegKey::ValueType wxRegKey::GetValueType(const char *szValue)
+wxRegKey::ValueType wxRegKey::GetValueType(const char *szValue) const
 {
   #ifdef  __WIN32__
-    if ( !Open() )
+    if ( ! CONST_CAST Open() )
       return Type_None;
 
     DWORD dwType;
@@ -776,6 +788,21 @@ bool wxRegKey::GetNextKey(wxString& strKeyName, long& lIndex) const
   return TRUE;
 }
 
+// returns TRUE if the value contains a number (else it's some string)
+bool wxRegKey::IsNumericValue(const char *szValue) const
+  { 
+      ValueType type = GetValueType(szValue);
+      switch ( type ) {
+        case Type_Dword:
+        case Type_Dword_little_endian:
+        case Type_Dword_big_endian:
+            return TRUE;
+
+        default:
+            return FALSE;
+      }
+  }
+
 // ============================================================================
 // implementation of global private functions
 // ============================================================================