1- PdfReader::PdfReader(....., int [] purpose) throw UserPermissionException
In this new constructor the user will pass the permissions he/she want to
perform. PDF Reader will verify if the document has respective permission as
it is doing now in "isOpenedWithFullPermissions".
2- PdfReader::isOpenWithUserPermissions( )
This new method will assist PdfStamperImp to verify the permissions during
construction.
3- PdfReader::int [] permissionAsked // variable to cache permissions that user
asked.
4: PdfStamperImp::PdfStamperImp
if ( !reader.isOpenedWithFullPermissions() )
if (! isOpenWithUserPermissions()
throw new BadPasswordException("PdfReader not opened
with owner password or user permissions")
this int array can be replace with single int where user can pass value after
AND or OR operation.
After theses change the client code may be look like this.
try
{
PdfReader reader = new PdfReader(filename);
int[] purpose ={PdfReader.PRINTING, PdfReader.FILLING_FORM}
stamp = new PdfStamper(pdfReader, output, '\0', false, purpose )
...........
}
catch(UserPermissionException e)
{
}
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