text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE194_Unexpected_Sign_Extension__listen_socket_malloc_61b.c
  Label Definition File: CWE194_Unexpected_Sign_Extension.label.xml
  Template File: sources-sink-61b.tmpl.c
  */
  /*
   * @description
   * CWE: 194 Unexpected Sign Extension
   * BadSource: listen_socket Read data using a listen socket (server side)
   * GoodSource: Positive integer
   * Sinks: malloc
   *    BadSink : Allocate memory using malloc() with the size of data
   * 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
  #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 LISTEN_BACKLOG 5
  /* Must be at least 8 for atoi() to work properly */
  #define CHAR_ARRAY_SIZE 8
  
  #ifndef OMITBAD
  
  short CWE194_Unexpected_Sign_Extension__listen_socket_malloc_61b_badSource(short data)
  {
      {
  #ifdef _WIN32
          WSADATA wsaData;
          int wsaDataInit = 0;
  #endif
          int recvResult;
          int tempInt;
          struct sockaddr_in service;
          SOCKET listenSocket = INVALID_SOCKET;
          SOCKET acceptSocket = INVALID_SOCKET;
          char inputBuffer[CHAR_ARRAY_SIZE];
          do
          {
  #ifdef _WIN32
              if (WSAStartup(MAKEWORD(2,2), &wsaData) != NO_ERROR)
              {
                  break;
              }
              wsaDataInit = 1;
  #endif
              listenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
              if (listenSocket == INVALID_SOCKET)
              {
                  break;
              }
              memset(&service, 0, sizeof(service));
              service.sin_family = AF_INET;
              service.sin_addr.s_addr = INADDR_ANY;
              service.sin_port = htons(TCP_PORT);
              if (bind(listenSocket, (struct sockaddr*)&service, sizeof(service)) == SOCKET_ERROR)
              {
                  break;
              }
              if (listen(listenSocket, LISTEN_BACKLOG) == SOCKET_ERROR)
              {
                  break;
              }
              acceptSocket = accept(listenSocket, NULL, NULL);
              if (acceptSocket == SOCKET_ERROR)
              {
                  break;
              }
              /* Abort on error or the connection was closed */
              recvResult = recv(acceptSocket, inputBuffer, CHAR_ARRAY_SIZE - 1, 0);
              /* FLAW: Use a value input from the network */
              if (recvResult == SOCKET_ERROR || recvResult == 0)
              {
                  break;
              }
              /* NUL-terminate string */
              inputBuffer[recvResult] = '\0';
              /* Convert to short - ensure int to short conversion will be successful and if
               * not ensure that data will be negative */
              tempInt = atoi(inputBuffer);
              if (tempInt > SHRT_MAX || tempInt < SHRT_MIN)
              {
                  data = -1;
              }
              else
              {
                  data = tempInt;
              }
          }
          while (0);
          if (listenSocket != INVALID_SOCKET)
          {
              CLOSE_SOCKET(listenSocket);
          }
          if (acceptSocket != INVALID_SOCKET)
          {
              CLOSE_SOCKET(acceptSocket);
          }
  #ifdef _WIN32
          if (wsaDataInit)
          {
              WSACleanup();
          }
  #endif
      }
      return data;
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B() uses the GoodSource with the BadSink */
  short CWE194_Unexpected_Sign_Extension__listen_socket_malloc_61b_goodG2BSource(short data)
  {
      /* FIX: Use a positive integer less than &InitialDataSize&*/
      data = 100-1;
      return data;
  }
  
  #endif /* OMITGOOD */
  