/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE23_Relative_Path_Traversal__wchar_t_environment_ifstream_73a.cpp
Label Definition File: CWE23_Relative_Path_Traversal.label.xml
Template File: sources-sink-73a.tmpl.cpp
*/
/*
 * @description
 * CWE: 23 Relative Path Traversal
 * BadSource: environment Read input from an environment variable
 * GoodSource: Use a fixed file name
 * Sinks: ifstream
 *    BadSink : Open the file named in data using ifstream::open()
 * Flow Variant: 73 Data flow: data passed in a list from one function to another in different source files
 *
 * */

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

#ifdef _WIN32
#define BASEPATH L"c:\\temp\\"
#else
#include <wchar.h>
#define BASEPATH L"/tmp/"
#endif

#define ENV_VARIABLE L"ADD"

#ifdef _WIN32
#define GETENV _wgetenv
#else
#define GETENV getenv
#endif

using namespace std;

namespace CWE23_Relative_Path_Traversal__wchar_t_environment_ifstream_73
{

#ifndef OMITBAD

/* bad function declaration */
void badSink(list<wchar_t *> dataList);

void bad()
{
    wchar_t * data;
    list<wchar_t *> dataList;
    wchar_t dataBuffer[FILENAME_MAX] = BASEPATH;
    data = dataBuffer;
    {
        /* Append input from an environment variable to data */
        size_t dataLen = wcslen(data);
        wchar_t * environment = GETENV(ENV_VARIABLE);
        /* If there is data in the environment variable */
        if (environment != NULL)
        {
            /* POTENTIAL FLAW: Read data from an environment variable */
            wcsncat(data+dataLen, environment, FILENAME_MAX-dataLen-1);
        }
    }
    /* Put data in a list */
    dataList.push_back(data);
    dataList.push_back(data);
    dataList.push_back(data);
    badSink(dataList);
}

#endif /* OMITBAD */

#ifndef OMITGOOD

/* good function declarations */

/* goodG2B uses the GoodSource with the BadSink */
void goodG2BSink(list<wchar_t *> dataList);

static void goodG2B()
{
    wchar_t * data;
    list<wchar_t *> dataList;
    wchar_t dataBuffer[FILENAME_MAX] = BASEPATH;
    data = dataBuffer;
    /* FIX: Use a fixed file name */
    wcscat(data, L"file.txt");
    /* Put data in a list */
    dataList.push_back(data);
    dataList.push_back(data);
    dataList.push_back(data);
    goodG2BSink(dataList);
}

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 CWE23_Relative_Path_Traversal__wchar_t_environment_ifstream_73; /* 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
