/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE789_Uncontrolled_Mem_Alloc__new_char_connect_socket_34.cpp
Label Definition File: CWE789_Uncontrolled_Mem_Alloc__new.label.xml
Template File: sources-sinks-34.tmpl.cpp
*/
/*
 * @description
 * CWE: 789 Uncontrolled Memory Allocation
 * BadSource: connect_socket Read data using a connect socket (client side)
 * GoodSource: Small number greater than zero
 * Sinks:
 *    GoodSink: Allocate memory with new [] and check the size of the memory to be allocated
 *    BadSink : Allocate memory with new [], but incorrectly check the size of the memory to be allocated
 * Flow Variant: 34 Data flow: use of a union containing two methods of accessing the same data (within the same function)
 *
 * */

#include "std_testcase.h"

#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"
#define CHAR_ARRAY_SIZE (3 * sizeof(data) + 2)

#define HELLO_STRING "hello"

namespace CWE789_Uncontrolled_Mem_Alloc__new_char_connect_socket_34
{

typedef union
{
    size_t unionFirst;
    size_t unionSecond;
} unionType;

#ifndef OMITBAD

void bad()
{
    size_t data;
    unionType myUnion;
    /* Initialize data */
    data = 0;
    {
#ifdef _WIN32
        WSADATA wsaData;
        int wsaDataInit = 0;
#endif
        int recvResult;
        struct sockaddr_in service;
        SOCKET connectSocket = INVALID_SOCKET;
        char inputBuffer[CHAR_ARRAY_SIZE];
        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 */
            recvResult = recv(connectSocket, inputBuffer, CHAR_ARRAY_SIZE - 1, 0);
            if (recvResult == SOCKET_ERROR || recvResult == 0)
            {
                break;
            }
            /* NUL-terminate the string */
            inputBuffer[recvResult] = '\0';
            /* Convert to unsigned int */
            data = strtoul(inputBuffer, NULL, 0);
        }
        while (0);
        if (connectSocket != INVALID_SOCKET)
        {
            CLOSE_SOCKET(connectSocket);
        }
#ifdef _WIN32
        if (wsaDataInit)
        {
            WSACleanup();
        }
#endif
    }
    myUnion.unionFirst = data;
    {
        size_t data = myUnion.unionSecond;
        {
            char * myString;
            /* POTENTIAL FLAW: No MAXIMUM limitation for memory allocation, but ensure data is large enough
             * for the strcpy() function to not cause a buffer overflow */
            /* INCIDENTAL FLAW: The source could cause a type overrun in data or in the memory allocation */
            if (data > strlen(HELLO_STRING))
            {
                myString = new char[data];
                /* Copy a small string into myString */
                strcpy(myString, HELLO_STRING);
                printLine(myString);
                delete [] myString;
            }
            else
            {
                printLine("Input is less than the length of the source string");
            }
        }
    }
}

#endif /* OMITBAD */

#ifndef OMITGOOD

/* goodG2B() uses the GoodSource with the BadSink */
static void goodG2B()
{
    size_t data;
    unionType myUnion;
    /* Initialize data */
    data = 0;
    /* FIX: Use a relatively small number for memory allocation */
    data = 20;
    myUnion.unionFirst = data;
    {
        size_t data = myUnion.unionSecond;
        {
            char * myString;
            /* POTENTIAL FLAW: No MAXIMUM limitation for memory allocation, but ensure data is large enough
             * for the strcpy() function to not cause a buffer overflow */
            /* INCIDENTAL FLAW: The source could cause a type overrun in data or in the memory allocation */
            if (data > strlen(HELLO_STRING))
            {
                myString = new char[data];
                /* Copy a small string into myString */
                strcpy(myString, HELLO_STRING);
                printLine(myString);
                delete [] myString;
            }
            else
            {
                printLine("Input is less than the length of the source string");
            }
        }
    }
}

/* goodB2G() uses the BadSource with the GoodSink */
static void goodB2G()
{
    size_t data;
    unionType myUnion;
    /* Initialize data */
    data = 0;
    {
#ifdef _WIN32
        WSADATA wsaData;
        int wsaDataInit = 0;
#endif
        int recvResult;
        struct sockaddr_in service;
        SOCKET connectSocket = INVALID_SOCKET;
        char inputBuffer[CHAR_ARRAY_SIZE];
        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 */
            recvResult = recv(connectSocket, inputBuffer, CHAR_ARRAY_SIZE - 1, 0);
            if (recvResult == SOCKET_ERROR || recvResult == 0)
            {
                break;
            }
            /* NUL-terminate the string */
            inputBuffer[recvResult] = '\0';
            /* Convert to unsigned int */
            data = strtoul(inputBuffer, NULL, 0);
        }
        while (0);
        if (connectSocket != INVALID_SOCKET)
        {
            CLOSE_SOCKET(connectSocket);
        }
#ifdef _WIN32
        if (wsaDataInit)
        {
            WSACleanup();
        }
#endif
    }
    myUnion.unionFirst = data;
    {
        size_t data = myUnion.unionSecond;
        {
            char * myString;
            /* FIX: Include a MAXIMUM limitation for memory allocation and a check to ensure data is large enough
             * for the strcpy() function to not cause a buffer overflow */
            /* INCIDENTAL FLAW: The source could cause a type overrun in data or in the memory allocation */
            if (data > strlen(HELLO_STRING) && data < 100)
            {
                myString = new char[data];
                /* Copy a small string into myString */
                strcpy(myString, HELLO_STRING);
                printLine(myString);
                delete [] myString;
            }
            else
            {
                printLine("Input is less than the length of the source string or too large");
            }
        }
    }
}

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

#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 CWE789_Uncontrolled_Mem_Alloc__new_char_connect_socket_34; /* 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
