/*

 * regexp.c: a libFuzzer target to test the regexp module.

 *

 * See Copyright for the status of this software.

 */

#include <libxml/xmlregexp.h>

#include "fuzz.h"

int

LLVMFuzzerInitialize(int *argc ATTRIBUTE_UNUSED,

                     char ***argv ATTRIBUTE_UNUSED) {

    xmlFuzzMemSetup();

    xmlSetGenericErrorFunc(NULL, xmlFuzzErrorFunc);

    return 0;

}

int

LLVMFuzzerTestOneInput(const char *data, size_t size) {

    xmlRegexpPtr regexp;

    size_t maxAlloc;

    const char *str1;

    if (size > 200)

        return(0);

    xmlFuzzDataInit(data, size);

    maxAlloc = xmlFuzzReadInt(4) % (size * 8 + 1);

    str1 = xmlFuzzReadString(NULL);

    /* CUR_SCHAR doesn't handle invalid UTF-8 and may cause infinite loops. */

    if (xmlCheckUTF8(BAD_CAST str1) != 0) {

        xmlFuzzMemSetLimit(maxAlloc);

        regexp = xmlRegexpCompile(BAD_CAST str1);

        /* xmlRegexpExec has pathological performance in too many cases. */

#if 0

        xmlRegexpExec(regexp, BAD_CAST str2);

#endif

        xmlRegFreeRegexp(regexp);

    }

    xmlFuzzMemSetLimit(0);

    xmlFuzzDataCleanup();

    xmlResetLastError();

    return 0;

}