/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE123_Write_What_Where_Condition__connect_socket_62b.cpp
Label Definition File: CWE123_Write_What_Where_Condition.label.xml
Template File: sources-sink-62b.tmpl.cpp
*/
/*
 * @description
 * CWE: 123 Write-What-Where Condition
 * BadSource: connect_socket Overwrite linked list pointers using a connect socket (client side)
 * GoodSource: Don't overwrite linked list pointers
 * Sinks:
 *    BadSink : Remove element from list
 * Flow Variant: 62 Data flow: data flows using a C++ reference from one function to another in different source files
 *
 * */

#include "std_testcase.h"

typedef struct _linkedList
{
    struct _linkedList *next;
    struct _linkedList *prev;
} linkedList;

typedef struct _badStruct
{
    linkedList list;
} badStruct;

static linkedList *linkedListPrev, *linkedListNext;

#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"

namespace CWE123_Write_What_Where_Condition__connect_socket_62
{

#ifndef OMITBAD

void badSource(badStruct &data)
{
    {
#ifdef _WIN32
        WSADATA wsaData;
        int wsaDataInit = 0;
#endif
        int recvResult;
        struct sockaddr_in service;
        SOCKET connectSocket = INVALID_SOCKET;
        do
        {
#ifdef _WIN32
            if (WSAStartup(MAKEWORD(2,2), &wsaData) != NO_ERROR)
            {
                break;
            }
            wsaDataInit = 1;
#endif
            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 */
            /* FLAW: overwrite linked list pointers with data */
            recvResult = recv(connectSocket, (char*)&data, sizeof(data), 0);
            if (recvResult == SOCKET_ERROR || recvResult == 0)
            {
                break;
            }
        }
        while (0);
        if (connectSocket != INVALID_SOCKET)
        {
            CLOSE_SOCKET(connectSocket);
        }
#ifdef _WIN32
        if (wsaDataInit)
        {
            WSACleanup();
        }
#endif
    }
}

#endif /* OMITBAD */

#ifndef OMITGOOD

/* goodG2B() uses the GoodSource with the BadSink */
void goodG2BSource(badStruct &data)
{
    /* FIX: don't overwrite linked list pointers */
    ; /* empty statement needed by some flow variants */
}

#endif /* OMITGOOD */

} /* close namespace */
