/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE121_Stack_Based_Buffer_Overflow__CWE193_char_declare_cpy_17.c
Label Definition File: CWE121_Stack_Based_Buffer_Overflow__CWE193.label.xml
Template File: sources-sink-17.tmpl.c
*/
/*
 * @description
 * CWE: 121 Stack Based Buffer Overflow
 * BadSource:  Point data to a buffer that does not have space for a NULL terminator
 * GoodSource: Point data to a buffer that includes space for a NULL terminator
 * Sink: cpy
 *    BadSink : Copy string to data using strcpy()
 * Flow Variant: 17 Control flow: for loops
 *
 * */

#include "std_testcase.h"

#ifndef _WIN32
#include <wchar.h>
#endif

/* MAINTENANCE NOTE: The length of this string should equal the 10 */
#define SRC_STRING "AAAAAAAAAA"

#ifndef OMITBAD

void CWE121_Stack_Based_Buffer_Overflow__CWE193_char_declare_cpy_17_bad()
{
    int i;
    char * data;
    char dataBadBuffer[10];
    char dataGoodBuffer[10+1];
    for(i = 0; i < 1; i++)
    {
        /* FLAW: Set a pointer to a buffer that does not leave room for a NULL terminator when performing
         * string copies in the sinks  */
        data = dataBadBuffer;
        data[0] = '\0'; /* null terminate */
    }
    {
        char source[10+1] = SRC_STRING;
        /* POTENTIAL FLAW: data may not have enough space to hold source */
        strcpy(data, source);
        printLine(data);
    }
}

#endif /* OMITBAD */

#ifndef OMITGOOD

/* goodG2B() - use goodsource and badsink by changing the conditions on the for statements */
static void goodG2B()
{
    int h;
    char * data;
    char dataBadBuffer[10];
    char dataGoodBuffer[10+1];
    for(h = 0; h < 1; h++)
    {
        /* FIX: Set a pointer to a buffer that leaves room for a NULL terminator when performing
         * string copies in the sinks  */
        data = dataGoodBuffer;
        data[0] = '\0'; /* null terminate */
    }
    {
        char source[10+1] = SRC_STRING;
        /* POTENTIAL FLAW: data may not have enough space to hold source */
        strcpy(data, source);
        printLine(data);
    }
}

void CWE121_Stack_Based_Buffer_Overflow__CWE193_char_declare_cpy_17_good()
{
    goodG2B();
}

#endif /* OMITGOOD */

/* Below is the main(). It is only used when building this testcase on
 * its own for testing or for building a binary to use in testing binary
 * analysis tools. It is not used when compiling all the testcases as one
 * application, which is how source code analysis tools are tested.
 */

#ifdef INCLUDEMAIN

int main(int argc, char * argv[])
{
    /* seed randomness */
    srand( (unsigned)time(NULL) );
#ifndef OMITGOOD
    printLine("Calling good()...");
    CWE121_Stack_Based_Buffer_Overflow__CWE193_char_declare_cpy_17_good();
    printLine("Finished good()");
#endif /* OMITGOOD */
#ifndef OMITBAD
    printLine("Calling bad()...");
    CWE121_Stack_Based_Buffer_Overflow__CWE193_char_declare_cpy_17_bad();
    printLine("Finished bad()");
#endif /* OMITBAD */
    return 0;
}

#endif
