text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE789_Uncontrolled_Mem_Alloc__malloc_wchar_t_connect_socket_41.c
  Label Definition File: CWE789_Uncontrolled_Mem_Alloc__malloc.label.xml
  Template File: sources-sinks-41.tmpl.c
  */
  /*
   * @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 malloc() and check the size of the memory to be allocated
   *    BadSink : Allocate memory with malloc(), but incorrectly check the size of the memory to be allocated
   * Flow Variant: 41 Data flow: data passed as an argument from one function to another in the same source file
   *
   * */
  
  #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 L"hello"
  
  #ifndef OMITBAD
  
  static void badSink(size_t data)
  {
      {
          wchar_t * myString;
          /* POTENTIAL FLAW: No MAXIMUM limitation for memory allocation, but ensure data is large enough
           * for the wcscpy() 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 > wcslen(HELLO_STRING))
          {
              myString = (wchar_t *)malloc(data*sizeof(wchar_t));
              /* Copy a small string into myString */
              wcscpy(myString, HELLO_STRING);
              printWLine(myString);
              free(myString);
          }
          else
          {
              printLine("Input is less than the length of the source string");
          }
      }
  }
  
  void CWE789_Uncontrolled_Mem_Alloc__malloc_wchar_t_connect_socket_41_bad()
  {
      size_t data;
      /* 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
      }
      badSink(data);
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B uses the GoodSource with the BadSink */
  static void goodG2BSink(size_t data)
  {
      {
          wchar_t * myString;
          /* POTENTIAL FLAW: No MAXIMUM limitation for memory allocation, but ensure data is large enough
           * for the wcscpy() 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 > wcslen(HELLO_STRING))
          {
              myString = (wchar_t *)malloc(data*sizeof(wchar_t));
              /* Copy a small string into myString */
              wcscpy(myString, HELLO_STRING);
              printWLine(myString);
              free(myString);
          }
          else
          {
              printLine("Input is less than the length of the source string");
          }
      }
  }
  
  static void goodG2B()
  {
      size_t data;
      /* Initialize data */
      data = 0;
      /* FIX: Use a relatively small number for memory allocation */
      data = 20;
      goodG2BSink(data);
  }
  
  /* goodB2G uses the BadSource with the GoodSink */
  static void goodB2GSink(size_t data)
  {
      {
          wchar_t * myString;
          /* FIX: Include a MAXIMUM limitation for memory allocation and a check to ensure data is large enough
           * for the wcscpy() 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 > wcslen(HELLO_STRING) && data < 100)
          {
              myString = (wchar_t *)malloc(data*sizeof(wchar_t));
              /* Copy a small string into myString */
              wcscpy(myString, HELLO_STRING);
              printWLine(myString);
              free(myString);
          }
          else
          {
              printLine("Input is less than the length of the source string or too large");
          }
      }
  }
  
  static void goodB2G()
  {
      size_t data;
      /* 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
      }
      goodB2GSink(data);
  }
  
  void CWE789_Uncontrolled_Mem_Alloc__malloc_wchar_t_connect_socket_41_good()
  {
      goodB2G();
      goodG2B();
  }
  
  #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()...");
      CWE789_Uncontrolled_Mem_Alloc__malloc_wchar_t_connect_socket_41_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE789_Uncontrolled_Mem_Alloc__malloc_wchar_t_connect_socket_41_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  