text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE680_Integer_Overflow_to_Buffer_Overflow__new_connect_socket_42.cpp
  Label Definition File: CWE680_Integer_Overflow_to_Buffer_Overflow__new.label.xml
  Template File: sources-sink-42.tmpl.cpp
  */
  /*
   * @description
   * CWE: 680 Integer Overflow to Buffer Overflow
   * BadSource: connect_socket Read data using a connect socket (client side)
   * GoodSource: Small number greater than zero that will not cause an integer overflow in the sink
   * Sink:
   *    BadSink : Attempt to allocate array using length value from source
   * Flow Variant: 42 Data flow: data returned from one function to another in the same source file
   *
   * */
  
  #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)
  
  namespace CWE680_Integer_Overflow_to_Buffer_Overflow__new_connect_socket_42
  {
  
  #ifndef OMITBAD
  
  static int badSource(int data)
  {
      {
  #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 int */
              data = atoi(inputBuffer);
          }
          while (0);
          if (connectSocket != INVALID_SOCKET)
          {
              CLOSE_SOCKET(connectSocket);
          }
  #ifdef _WIN32
          if (wsaDataInit)
          {
              WSACleanup();
          }
  #endif
      }
      return data;
  }
  
  void bad()
  {
      int data;
      /* Initialize data */
      data = -1;
      data = badSource(data);
      {
          size_t dataBytes,i;
          int *intPointer;
          /* POTENTIAL FLAW: dataBytes may overflow to a small value */
          dataBytes = data * sizeof(int); /* sizeof array in bytes */
          intPointer = (int*)new char[dataBytes];
          for (i = 0; i < (size_t)data; i++)
          {
              intPointer[i] = 0; /* may write beyond limit of intPointer if integer overflow occured above */
          }
          printIntLine(intPointer[0]);
          delete [] intPointer;
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  static int goodG2BSource(int data)
  {
      /* FIX: Set data to a relatively small number greater than zero */
      data = 20;
      return data;
  }
  
  /* goodG2B() uses the GoodSource with the BadSink */
  static void goodG2B()
  {
      int data;
      /* Initialize data */
      data = -1;
      data = goodG2BSource(data);
      {
          size_t dataBytes,i;
          int *intPointer;
          /* POTENTIAL FLAW: dataBytes may overflow to a small value */
          dataBytes = data * sizeof(int); /* sizeof array in bytes */
          intPointer = (int*)new char[dataBytes];
          for (i = 0; i < (size_t)data; i++)
          {
              intPointer[i] = 0; /* may write beyond limit of intPointer if integer overflow occured above */
          }
          printIntLine(intPointer[0]);
          delete [] intPointer;
      }
  }
  
  void good()
  {
      goodG2B();
  }
  
  #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 CWE680_Integer_Overflow_to_Buffer_Overflow__new_connect_socket_42; /* 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
  