/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE122_Heap_Based_Buffer_Overflow__c_CWE193_char_loop_43.cpp
Label Definition File: CWE122_Heap_Based_Buffer_Overflow__c_CWE193.label.xml
Template File: sources-sink-43.tmpl.cpp
*/
/*
 * @description
 * CWE: 122 Heap Based Buffer Overflow
 * BadSource:  Allocate memory for a string, but do not allocate space for NULL terminator
 * GoodSource: Allocate enough memory for a string and the NULL terminator
 * Sinks: loop
 *    BadSink : Copy array to data using a loop
 * Flow Variant: 43 Data flow: data flows using a C++ reference from one function to another in the same source file
 *
 * */

#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"

namespace CWE122_Heap_Based_Buffer_Overflow__c_CWE193_char_loop_43
{

#ifndef OMITBAD

static void badSource(char * &data)
{
    /* FLAW: Did not leave space for a null terminator */
    data = (char *)malloc(10*sizeof(char));
    if (data == NULL) {exit(-1);}
}

void bad()
{
    char * data;
    data = NULL;
    badSource(data);
    {
        char source[10+1] = SRC_STRING;
        size_t i, sourceLen;
        sourceLen = strlen(source);
        /* Copy length + 1 to include NUL terminator from source */
        /* POTENTIAL FLAW: data may not have enough space to hold source */
        for (i = 0; i < sourceLen + 1; i++)
        {
            data[i] = source[i];
        }
        printLine(data);
        free(data);
    }
}

#endif /* OMITBAD */

#ifndef OMITGOOD

/* goodG2B() uses the GoodSource with the BadSink */
static void goodG2BSource(char * &data)
{
    /* FIX: Allocate space for a null terminator */
    data = (char *)malloc((10+1)*sizeof(char));
    if (data == NULL) {exit(-1);}
}

static void goodG2B()
{
    char * data;
    data = NULL;
    goodG2BSource(data);
    {
        char source[10+1] = SRC_STRING;
        size_t i, sourceLen;
        sourceLen = strlen(source);
        /* Copy length + 1 to include NUL terminator from source */
        /* POTENTIAL FLAW: data may not have enough space to hold source */
        for (i = 0; i < sourceLen + 1; i++)
        {
            data[i] = source[i];
        }
        printLine(data);
        free(data);
    }
}

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__c_CWE193_char_loop_43; /* 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
