kc3-lang/libxml2/fuzz/schema.c

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• Hash : 85c817a2
  Author :
  Date : 2021-02-22T21:28:21
  

  Improve fuzzer stability
  
  - Add more calls to xmlInitializeCatalog.
  - Call xmlResetLastError after fuzzing each input.
  

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• fuzz/schema.c

• /*
   * schema.c: a libFuzzer target to test the XML Schema processor.
   *
   * See Copyright for the status of this software.
   */
  
  #include <libxml/catalog.h>
  #include <libxml/xmlschemas.h>
  #include "fuzz.h"
  
  int
  LLVMFuzzerInitialize(int *argc ATTRIBUTE_UNUSED,
                       char ***argv ATTRIBUTE_UNUSED) {
      xmlInitParser();
  #ifdef LIBXML_CATALOG_ENABLED
      xmlInitializeCatalog();
  #endif
      xmlSetGenericErrorFunc(NULL, xmlFuzzErrorFunc);
      xmlSetExternalEntityLoader(xmlFuzzEntityLoader);
  
      return 0;
  }
  
  int
  LLVMFuzzerTestOneInput(const char *data, size_t size) {
      xmlSchemaParserCtxtPtr pctxt;
  
      if (size > 50000)
          return(0);
  
      xmlFuzzDataInit(data, size);
      xmlFuzzReadEntities();
  
      pctxt = xmlSchemaNewParserCtxt(xmlFuzzMainUrl());
      xmlSchemaSetParserErrors(pctxt, xmlFuzzErrorFunc, xmlFuzzErrorFunc, NULL);
      xmlSchemaFree(xmlSchemaParse(pctxt));
      xmlSchemaFreeParserCtxt(pctxt);
  
      xmlFuzzDataCleanup();
      xmlResetLastError();
  
      return(0);
  }
  
  

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