/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE606_Unchecked_Loop_Condition__wchar_t_connect_socket_15.c
Label Definition File: CWE606_Unchecked_Loop_Condition.label.xml
Template File: sources-sinks-15.tmpl.c
*/
/*
 * @description
 * CWE: 606 Unchecked Input For Loop Condition
 * BadSource: connect_socket Read data using a connect socket (client side)
 * GoodSource: Input a number less than MAX_LOOP
 * Sinks:
 *    GoodSink: Use data as the for loop variant after checking to see if it is less than MAX_LOOP
 *    BadSink : Use data as the for loop variant without checking its size
 * Flow Variant: 15 Control flow: switch(6) and switch(7)
 *
 * */

#include "std_testcase.h"

#define MAX_LOOP 10000

#ifndef _WIN32
#include <wchar.h>
#endif

#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"

#ifndef OMITBAD

void CWE606_Unchecked_Loop_Condition__wchar_t_connect_socket_15_bad()
{
    wchar_t * data;
    wchar_t dataBuffer[100] = L"";
    data = dataBuffer;
    switch(6)
    {
    case 6:
    {
#ifdef _WIN32
        WSADATA wsaData;
        int wsaDataInit = 0;
#endif
        int recvResult;
        struct sockaddr_in service;
        wchar_t *replace;
        SOCKET connectSocket = INVALID_SOCKET;
        size_t dataLen = wcslen(data);
        do
        {
#ifdef _WIN32
            if (WSAStartup(MAKEWORD(2,2), &wsaData) != NO_ERROR)
            {
                break;
            }
            wsaDataInit = 1;
#endif
            /* POTENTIAL FLAW: Read data using a connect socket */
            connectSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
            if (connectSocket == INVALID_SOCKET)
            {
                break;
            }
            memset(&service, 0, sizeof(service));
            service.sin_family = AF_INET;
            service.sin_addr.s_addr = inet_addr(IP_ADDRESS);
            service.sin_port = htons(TCP_PORT);
            if (connect(connectSocket, (struct sockaddr*)&service, sizeof(service)) == SOCKET_ERROR)
            {
                break;
            }
            /* Abort on error or the connection was closed, make sure to recv one
             * less char than is in the recv_buf in order to append a terminator */
            /* Abort on error or the connection was closed */
            recvResult = recv(connectSocket, (char *)(data + dataLen), sizeof(wchar_t) * (100 - dataLen - 1), 0);
            if (recvResult == SOCKET_ERROR || recvResult == 0)
            {
                break;
            }
            /* Append null terminator */
            data[dataLen + recvResult / sizeof(wchar_t)] = L'\0';
            /* Eliminate CRLF */
            replace = wcschr(data, L'\r');
            if (replace)
            {
                *replace = L'\0';
            }
            replace = wcschr(data, L'\n');
            if (replace)
            {
                *replace = L'\0';
            }
        }
        while (0);
        if (connectSocket != INVALID_SOCKET)
        {
            CLOSE_SOCKET(connectSocket);
        }
#ifdef _WIN32
        if (wsaDataInit)
        {
            WSACleanup();
        }
#endif
    }
    break;
    default:
        /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
        printLine("Benign, fixed string");
        break;
    }
    switch(7)
    {
    case 7:
    {
        int i, n, intVariable;
        if (swscanf(data, L"%d", &n) == 1)
        {
            /* POTENTIAL FLAW: user-supplied value 'n' could lead to very large loop iteration */
            intVariable = 0;
            for (i = 0; i < n; i++)
            {
                /* INCIDENTAL: CWE 561: Dead Code - non-avoidable if n <= 0 */
                intVariable++; /* avoid a dead/empty code block issue */
            }
            printIntLine(intVariable);
        }
    }
    break;
    default:
        /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
        printLine("Benign, fixed string");
        break;
    }
}

#endif /* OMITBAD */

#ifndef OMITGOOD

/* goodB2G1() - use badsource and goodsink by changing the second switch to switch(8) */
static void goodB2G1()
{
    wchar_t * data;
    wchar_t dataBuffer[100] = L"";
    data = dataBuffer;
    switch(6)
    {
    case 6:
    {
#ifdef _WIN32
        WSADATA wsaData;
        int wsaDataInit = 0;
#endif
        int recvResult;
        struct sockaddr_in service;
        wchar_t *replace;
        SOCKET connectSocket = INVALID_SOCKET;
        size_t dataLen = wcslen(data);
        do
        {
#ifdef _WIN32
            if (WSAStartup(MAKEWORD(2,2), &wsaData) != NO_ERROR)
            {
                break;
            }
            wsaDataInit = 1;
#endif
            /* POTENTIAL FLAW: Read data using a connect socket */
            connectSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
            if (connectSocket == INVALID_SOCKET)
            {
                break;
            }
            memset(&service, 0, sizeof(service));
            service.sin_family = AF_INET;
            service.sin_addr.s_addr = inet_addr(IP_ADDRESS);
            service.sin_port = htons(TCP_PORT);
            if (connect(connectSocket, (struct sockaddr*)&service, sizeof(service)) == SOCKET_ERROR)
            {
                break;
            }
            /* Abort on error or the connection was closed, make sure to recv one
             * less char than is in the recv_buf in order to append a terminator */
            /* Abort on error or the connection was closed */
            recvResult = recv(connectSocket, (char *)(data + dataLen), sizeof(wchar_t) * (100 - dataLen - 1), 0);
            if (recvResult == SOCKET_ERROR || recvResult == 0)
            {
                break;
            }
            /* Append null terminator */
            data[dataLen + recvResult / sizeof(wchar_t)] = L'\0';
            /* Eliminate CRLF */
            replace = wcschr(data, L'\r');
            if (replace)
            {
                *replace = L'\0';
            }
            replace = wcschr(data, L'\n');
            if (replace)
            {
                *replace = L'\0';
            }
        }
        while (0);
        if (connectSocket != INVALID_SOCKET)
        {
            CLOSE_SOCKET(connectSocket);
        }
#ifdef _WIN32
        if (wsaDataInit)
        {
            WSACleanup();
        }
#endif
    }
    break;
    default:
        /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
        printLine("Benign, fixed string");
        break;
    }
    switch(8)
    {
    case 7:
        /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
        printLine("Benign, fixed string");
        break;
    default:
    {
        int i, n, intVariable;
        if (swscanf(data, L"%d", &n) == 1)
        {
            /* FIX: limit loop iteration counts */
            if (n < MAX_LOOP)
            {
                intVariable = 0;
                for (i = 0; i < n; i++)
                {
                    /* INCIDENTAL: CWE 561: Dead Code - non-avoidable if n <= 0 */
                    intVariable++; /* avoid a dead/empty code block issue */
                }
                printIntLine(intVariable);
            }
        }
    }
    break;
    }
}

/* goodB2G2() - use badsource and goodsink by reversing the blocks in the second switch */
static void goodB2G2()
{
    wchar_t * data;
    wchar_t dataBuffer[100] = L"";
    data = dataBuffer;
    switch(6)
    {
    case 6:
    {
#ifdef _WIN32
        WSADATA wsaData;
        int wsaDataInit = 0;
#endif
        int recvResult;
        struct sockaddr_in service;
        wchar_t *replace;
        SOCKET connectSocket = INVALID_SOCKET;
        size_t dataLen = wcslen(data);
        do
        {
#ifdef _WIN32
            if (WSAStartup(MAKEWORD(2,2), &wsaData) != NO_ERROR)
            {
                break;
            }
            wsaDataInit = 1;
#endif
            /* POTENTIAL FLAW: Read data using a connect socket */
            connectSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
            if (connectSocket == INVALID_SOCKET)
            {
                break;
            }
            memset(&service, 0, sizeof(service));
            service.sin_family = AF_INET;
            service.sin_addr.s_addr = inet_addr(IP_ADDRESS);
            service.sin_port = htons(TCP_PORT);
            if (connect(connectSocket, (struct sockaddr*)&service, sizeof(service)) == SOCKET_ERROR)
            {
                break;
            }
            /* Abort on error or the connection was closed, make sure to recv one
             * less char than is in the recv_buf in order to append a terminator */
            /* Abort on error or the connection was closed */
            recvResult = recv(connectSocket, (char *)(data + dataLen), sizeof(wchar_t) * (100 - dataLen - 1), 0);
            if (recvResult == SOCKET_ERROR || recvResult == 0)
            {
                break;
            }
            /* Append null terminator */
            data[dataLen + recvResult / sizeof(wchar_t)] = L'\0';
            /* Eliminate CRLF */
            replace = wcschr(data, L'\r');
            if (replace)
            {
                *replace = L'\0';
            }
            replace = wcschr(data, L'\n');
            if (replace)
            {
                *replace = L'\0';
            }
        }
        while (0);
        if (connectSocket != INVALID_SOCKET)
        {
            CLOSE_SOCKET(connectSocket);
        }
#ifdef _WIN32
        if (wsaDataInit)
        {
            WSACleanup();
        }
#endif
    }
    break;
    default:
        /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
        printLine("Benign, fixed string");
        break;
    }
    switch(7)
    {
    case 7:
    {
        int i, n, intVariable;
        if (swscanf(data, L"%d", &n) == 1)
        {
            /* FIX: limit loop iteration counts */
            if (n < MAX_LOOP)
            {
                intVariable = 0;
                for (i = 0; i < n; i++)
                {
                    /* INCIDENTAL: CWE 561: Dead Code - non-avoidable if n <= 0 */
                    intVariable++; /* avoid a dead/empty code block issue */
                }
                printIntLine(intVariable);
            }
        }
    }
    break;
    default:
        /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
        printLine("Benign, fixed string");
        break;
    }
}

/* goodG2B1() - use goodsource and badsink by changing the first switch to switch(5) */
static void goodG2B1()
{
    wchar_t * data;
    wchar_t dataBuffer[100] = L"";
    data = dataBuffer;
    switch(5)
    {
    case 6:
        /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
        printLine("Benign, fixed string");
        break;
    default:
        /* FIX: Set data to a number less than MAX_LOOP */
        wcscpy(data, L"15");
        break;
    }
    switch(7)
    {
    case 7:
    {
        int i, n, intVariable;
        if (swscanf(data, L"%d", &n) == 1)
        {
            /* POTENTIAL FLAW: user-supplied value 'n' could lead to very large loop iteration */
            intVariable = 0;
            for (i = 0; i < n; i++)
            {
                /* INCIDENTAL: CWE 561: Dead Code - non-avoidable if n <= 0 */
                intVariable++; /* avoid a dead/empty code block issue */
            }
            printIntLine(intVariable);
        }
    }
    break;
    default:
        /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
        printLine("Benign, fixed string");
        break;
    }
}

/* goodG2B2() - use goodsource and badsink by reversing the blocks in the first switch */
static void goodG2B2()
{
    wchar_t * data;
    wchar_t dataBuffer[100] = L"";
    data = dataBuffer;
    switch(6)
    {
    case 6:
        /* FIX: Set data to a number less than MAX_LOOP */
        wcscpy(data, L"15");
        break;
    default:
        /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
        printLine("Benign, fixed string");
        break;
    }
    switch(7)
    {
    case 7:
    {
        int i, n, intVariable;
        if (swscanf(data, L"%d", &n) == 1)
        {
            /* POTENTIAL FLAW: user-supplied value 'n' could lead to very large loop iteration */
            intVariable = 0;
            for (i = 0; i < n; i++)
            {
                /* INCIDENTAL: CWE 561: Dead Code - non-avoidable if n <= 0 */
                intVariable++; /* avoid a dead/empty code block issue */
            }
            printIntLine(intVariable);
        }
    }
    break;
    default:
        /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
        printLine("Benign, fixed string");
        break;
    }
}

void CWE606_Unchecked_Loop_Condition__wchar_t_connect_socket_15_good()
{
    goodB2G1();
    goodB2G2();
    goodG2B1();
    goodG2B2();
}

#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()...");
    CWE606_Unchecked_Loop_Condition__wchar_t_connect_socket_15_good();
    printLine("Finished good()");
#endif /* OMITGOOD */
#ifndef OMITBAD
    printLine("Calling bad()...");
    CWE606_Unchecked_Loop_Condition__wchar_t_connect_socket_15_bad();
    printLine("Finished bad()");
#endif /* OMITBAD */
    return 0;
}

#endif
