[PATCH] Fix for Bug 43895: Never let users save in /tmp by default

Hi,

Here is a my first attempt at a patch, fixing Bug 43895 (Never let users 
save in /tmp by default).

I was debating adding a warning for anyone saving to /tmp, however I 
doubt anyone would do this accidentally except in the case of 
downloading through firefox, which is now fixed. (Incidentally Chromium 
and Rekonq don't seem to allow direct opening of files -- they force the 
user to save the file first -- so this fix is pretty much firefox specific).

(Contributed under the LGPLv3+ / MPL.)

Regards,

Andrzej Hunt

diff --git a/sfx2/source/dialog/filedlghelper.cxx b/sfx2/source/dialog/filedlghelper.cxx
index 3bf4fb5..00d53be 100644
--- a/sfx2/source/dialog/filedlghelper.cxx
+++ b/sfx2/source/dialog/filedlghelper.cxx
@@ -26,6 +26,7 @@
  *
  ************************************************************************/
 
+#include <sys/stat.h>
 #include <sfx2/filedlghelper.hxx>
 #include <sal/types.h>
 #include <com/sun/star/lang/XInitialization.hpp>
@@ -1635,6 +1636,21 @@ void FileDialogHelper_Impl::getRealFilter( String& _rFilter ) const
     }
 }
 
+void FileDialogHelper_Impl::verifyPath()
+{
+    struct stat aFileStat;
+    const char* pFullPath = OUStringToOString( ( maPath.copy(7) + maFileName ),
+            osl_getThreadTextEncoding() ).getStr();
+    stat( pFullPath, &aFileStat );
+    // Check that the file has read only permission and is in /tmp -- this is
+    //  the case if we have opened the file from the web with firefox only.
+    if ( maPath.compareTo("file:///tmp",11) == 0 &&
+            ( aFileStat.st_mode & (S_IRWXO + S_IRWXG + S_IRWXU) ) == S_IRUSR ) {
+        maPath = SvtPathOptions().GetWorkPath();
+        mxFileDlg->setDisplayDirectory( maPath );
+    }
+}
+
 // ------------------------------------------------------------------------
 void FileDialogHelper_Impl::displayFolder( const ::rtl::OUString& _rPath )
 {
@@ -1648,6 +1664,7 @@ void FileDialogHelper_Impl::displayFolder( const ::rtl::OUString& _rPath )
         try
         {
             mxFileDlg->setDisplayDirectory( maPath );
+            verifyPath();
         }
         catch( const IllegalArgumentException& )
         {
@@ -1665,6 +1682,7 @@ void FileDialogHelper_Impl::setFileName( const ::rtl::OUString& _rFile )
         try
         {
             mxFileDlg->setDefaultName( maFileName );
+            verifyPath();
         }
         catch( const IllegalArgumentException& )
         {
diff --git a/sfx2/source/dialog/filedlgimpl.hxx b/sfx2/source/dialog/filedlgimpl.hxx
index 4f4e86d..149ac66 100644
--- a/sfx2/source/dialog/filedlgimpl.hxx
+++ b/sfx2/source/dialog/filedlgimpl.hxx
@@ -151,6 +151,8 @@ namespace sfx2
         void                    SaveLastUsedFilter( void );
 
         void                    implInitializeFileName( );
+        
+        void                    verifyPath( );
 
         void                    implGetAndCacheFiles( const ::com::sun::star::uno::Reference< 
XInterface >& xPicker  ,
                                                       std::vector<rtl::OUString>&               
rpURLList,