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-This example shows how to perform more secure XML parsing by disabling
-the XML External Entity (XXE) Processing. If XML Schema validation is
-used, then it would also make sense to pre-load the known schemas and
-to disable loading of any external schemas, for example, via the
-schemaLocation attribute found in the XML documents. See the comment
-in driver.cxx for more information on how to achieve this.
-
-The example consists of the following files:
-
-library.xsd
- XML Schema which describes a library of books.
-
-library.xml
- Sample XML instance document. It includes (commented out) DOCTYPE
- declarations with internal and external subsets that the parser
- will refuse to process.
-
-library.hxx
-library.cxx
- C++ types that represent the given vocabulary and a set of parsing
- functions that convert XML instance documents to a tree-like in-memory
- object model. These are generated by the XSD compiler from library.xsd.
-
-secure-dom-parser.hxx
-secure-dom-parser.cxx
- A secure Xerces-C++ DOM parser implementation that disables processing
- of internal/external DTD subsets.
-
-driver.cxx
- Driver for the example. It first sets up the secure DOM parser. It then
- parses the input file to a DOM document using the secure DOM parser and
- calls one of the parsing functions that constructs the object model from
- this DOM document. Finally, the driver prints a number of books in the
- object model to STDERR.
-
-To run the example on the sample XML instance document simply execute:
-
-$ ./driver library.xml
-
-To verify that DTD processing is disabled, uncomment a different DOCTYPE
-version in the sample document.