/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE78_OS_Command_Injection__wchar_t_fromConsole_execlp_17.c
Label Definition File: CWE78_OS_Command_Injection.no_path.label.xml
Template File: sources-sink-17.tmpl.c
*/
/*
 * @description
 * CWE: 78 OS Command Injection
 * BadSource: fromConsole Read input from the console
 * GoodSource: Benign input
 * Sink: execlp
 *    BadSink : execute command with wexeclp
 * Flow Variant: 17 Control flow: for loops
 *
 * */

#include "std_testcase.h"

#include <wchar.h>

#ifdef _WIN32
# define COMMAND_INT_PATH L"%WINDIR%\\system32\\cmd.exe"
# define COMMAND_INT L"cmd.exe"
# define COMMAND_ARG1 L"/c"
# define COMMAND_ARG2 L"dir"
# define COMMAND_ARG3 data
#else /* NOT _WIN32 */
# define COMMAND_INT_PATH L"/bin/sh"
# define COMMAND_INT L"sh"
# define COMMAND_ARG1 L"ls"
# define COMMAND_ARG2 data
# define COMMAND_ARG3 NULL
#endif

#ifdef _WIN32
#include <process.h>
# define EXECLP _wexeclp
#else /* NOT _WIN32 */
# define EXECLP wexeclp
#endif

#ifndef OMITBAD

void CWE78_OS_Command_Injection__wchar_t_fromConsole_execlp_17_bad()
{
    int h,i;
    wchar_t * data;
    wchar_t data_buf[100] = L"";
    data = data_buf;
    for(h = 0; h < 0; h++)
    {
        /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
        /* FIX: Benign input preventing command injection */
        wcscat(data, L"*.*");
    }
    for(i = 0; i < 1; i++)
    {
        {
            /* Read input from the console */
            size_t data_len = wcslen(data);
            /* if there is room in data, read into it from the console */
            if(100-data_len > 1)
            {
                fgetws(data+data_len, (int)(100-data_len), stdin);
                /* The next 3 lines remove the carriage return from the string that is
                 * inserted by fgetws() */
                data_len = wcslen(data);
                if (data_len > 0)
                {
                    data[data_len-1] = L'\0';
                }
            }
        }
    }
    /* wexeclp - searches for the location of the command among
     * the directories specified by the PATH environment variable */
    /* POSSIBLE FLAW: Execute command without validating input possibly leading to command injection */
    EXECLP(COMMAND_INT, COMMAND_INT, COMMAND_ARG1, COMMAND_ARG2, COMMAND_ARG3, NULL);
}

#endif /* OMITBAD */

#ifndef OMITGOOD

/* goodG2B() - use goodsource and badsink by changing the conditions on the for statements */
static void goodG2B()
{
    int h,i;
    wchar_t * data;
    wchar_t data_buf[100] = L"";
    data = data_buf;
    for(h = 0; h < 1; h++)
    {
        /* FIX: Benign input preventing command injection */
        wcscat(data, L"*.*");
    }
    for(i = 0; i < 0; i++)
    {
        /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
        {
            /* Read input from the console */
            size_t data_len = wcslen(data);
            /* if there is room in data, read into it from the console */
            if(100-data_len > 1)
            {
                fgetws(data+data_len, (int)(100-data_len), stdin);
                /* The next 3 lines remove the carriage return from the string that is
                 * inserted by fgetws() */
                data_len = wcslen(data);
                if (data_len > 0)
                {
                    data[data_len-1] = L'\0';
                }
            }
        }
    }
    /* wexeclp - searches for the location of the command among
     * the directories specified by the PATH environment variable */
    /* POSSIBLE FLAW: Execute command without validating input possibly leading to command injection */
    EXECLP(COMMAND_INT, COMMAND_INT, COMMAND_ARG1, COMMAND_ARG2, COMMAND_ARG3, NULL);
}

void CWE78_OS_Command_Injection__wchar_t_fromConsole_execlp_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()...");
    CWE78_OS_Command_Injection__wchar_t_fromConsole_execlp_17_good();
    printLine("Finished good()");
#endif /* OMITGOOD */
#ifndef OMITBAD
    printLine("Calling bad()...");
    CWE78_OS_Command_Injection__wchar_t_fromConsole_execlp_17_bad();
    printLine("Finished bad()");
#endif /* OMITBAD */
    return 0;
}

#endif
