/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE122_Heap_Based_Buffer_Overflow__cpp_CWE806_char_ncpy_72a.cpp
Label Definition File: CWE122_Heap_Based_Buffer_Overflow__cpp_CWE806.label.xml
Template File: sources-sink-72a.tmpl.cpp
*/
/*
 * @description
 * CWE: 122 Heap Based Buffer Overflow
 * BadSource:  Initialize data as a large string
 * GoodSource: Initialize data as a small string
 * Sinks: ncpy
 *    BadSink : Copy data to string using strncpy
 * Flow Variant: 72 Data flow: data passed in a vector from one function to another in different source files
 *
 * */

#include "std_testcase.h"
#include <vector>

#include <wchar.h>

using namespace std;

namespace CWE122_Heap_Based_Buffer_Overflow__cpp_CWE806_char_ncpy_72
{

#ifndef OMITBAD

/* bad function declaration */
void badSink(vector<char *> dataVector);

void bad()
{
    char * data;
    vector<char *> dataVector;
    data = new char[100];
    /* FLAW: Initialize data as a large buffer that is larger than the small buffer used in the sink */
    memset(data, 'A', 100-1); /* fill with 'A's */
    data[100-1] = '\0'; /* null terminate */
    /* Put data in a vector */
    dataVector.insert(dataVector.end(), 1, data);
    dataVector.insert(dataVector.end(), 1, data);
    dataVector.insert(dataVector.end(), 1, data);
    badSink(dataVector);
}

#endif /* OMITBAD */

#ifndef OMITGOOD

/* good function declarations */

/* goodG2B uses the GoodSource with the BadSink */
void goodG2BSink(vector<char *> dataVector);

static void goodG2B()
{
    char * data;
    vector<char *> dataVector;
    data = new char[100];
    /* FIX: Initialize data as a small buffer that as small or smaller than the small buffer used in the sink */
    memset(data, 'A', 50-1); /* fill with 'A's */
    data[50-1] = '\0'; /* null terminate */
    /* Put data in a vector */
    dataVector.insert(dataVector.end(), 1, data);
    dataVector.insert(dataVector.end(), 1, data);
    dataVector.insert(dataVector.end(), 1, data);
    goodG2BSink(dataVector);
}

void good()
{
    goodG2B();
}

#endif /* OMITGOOD */

} /* close namespace */

/* 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

using namespace CWE122_Heap_Based_Buffer_Overflow__cpp_CWE806_char_ncpy_72; /* so that we can use good and bad easily */

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

#endif
