/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE190_Integer_Overflow__int_connect_socket_square_61a.c
Label Definition File: CWE190_Integer_Overflow__int.label.xml
Template File: sources-sinks-61a.tmpl.c
*/
/*
 * @description
 * CWE: 190 Integer Overflow
 * BadSource: connect_socket Read data using a connect socket (client side)
 * GoodSource: Set data to a small, non-zero number (two)
 * Sinks: square
 *    GoodSink: Ensure there will not be an overflow before squaring data
 *    BadSink : Square data, which can lead to overflow
 * Flow Variant: 61 Data flow: data returned from one function to another in different source files
 *
 * */

#include "std_testcase.h"

#ifdef _WIN32
#include <winsock2.h>
#include <windows.h>
#include <direct.h>
#pragma comment(lib, "ws2_32") /* include ws2_32.lib when linking */
#define CLOSE_SOCKET closesocket
#else /* NOT _WIN32 */
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#define INVALID_SOCKET -1
#define SOCKET_ERROR -1
#define CLOSE_SOCKET close
#define SOCKET int
#endif

#define TCP_PORT 27015
#define IP_ADDRESS "127.0.0.1"
#define CHAR_ARRAY_SIZE (3 * sizeof(data) + 2)

#include <math.h>

#ifndef OMITBAD

/* bad function declaration */
int CWE190_Integer_Overflow__int_connect_socket_square_61b_badSource(int data);

void CWE190_Integer_Overflow__int_connect_socket_square_61_bad()
{
    int data;
    /* Initialize data */
    data = 0;
    data = CWE190_Integer_Overflow__int_connect_socket_square_61b_badSource(data);
    {
        /* POTENTIAL FLAW: if (data*data) > INT_MAX, this will overflow */
        int result = data * data;
        printIntLine(result);
    }
}

#endif /* OMITBAD */

#ifndef OMITGOOD

/* goodG2B uses the GoodSource with the BadSink */
int CWE190_Integer_Overflow__int_connect_socket_square_61b_goodG2BSource(int data);

static void goodG2B()
{
    int data;
    /* Initialize data */
    data = 0;
    data = CWE190_Integer_Overflow__int_connect_socket_square_61b_goodG2BSource(data);
    {
        /* POTENTIAL FLAW: if (data*data) > INT_MAX, this will overflow */
        int result = data * data;
        printIntLine(result);
    }
}

/* goodB2G uses the BadSource with the GoodSink */
int CWE190_Integer_Overflow__int_connect_socket_square_61b_goodB2GSource(int data);

static void goodB2G()
{
    int data;
    /* Initialize data */
    data = 0;
    data = CWE190_Integer_Overflow__int_connect_socket_square_61b_goodB2GSource(data);
    /* FIX: Add a check to prevent an overflow from occurring */
    if (data > INT_MIN && abs(data) < (long)sqrt((double)INT_MAX))
    {
        int result = data * data;
        printIntLine(result);
    }
    else
    {
        printLine("data value is too large to perform arithmetic safely.");
    }
}

void CWE190_Integer_Overflow__int_connect_socket_square_61_good()
{
    goodG2B();
    goodB2G();
}

#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()...");
    CWE190_Integer_Overflow__int_connect_socket_square_61_good();
    printLine("Finished good()");
#endif /* OMITGOOD */
#ifndef OMITBAD
    printLine("Calling bad()...");
    CWE190_Integer_Overflow__int_connect_socket_square_61_bad();
    printLine("Finished bad()");
#endif /* OMITBAD */
    return 0;
}

#endif
