text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE36_Absolute_Path_Traversal__char_listen_socket_fopen_18.cpp
  Label Definition File: CWE36_Absolute_Path_Traversal.label.xml
  Template File: sources-sink-18.tmpl.cpp
  */
  /*
   * @description
   * CWE: 36 Absolute Path Traversal
   * BadSource: listen_socket Read data using a listen socket (server side)
   * GoodSource: Full path and file name
   * Sink: fopen
   *    BadSink : Open the file named in data using fopen()
   * Flow Variant: 18 Control flow: goto statements
   *
   * */
  
  #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
  #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
  
  #ifdef _WIN32
  #define FOPEN fopen
  #else
  #define FOPEN fopen
  #endif
  
  namespace CWE36_Absolute_Path_Traversal__char_listen_socket_fopen_18
  {
  
  #ifndef OMITBAD
  
  void bad()
  {
      char * data;
      char dataBuffer[FILENAME_MAX] = "";
      data = dataBuffer;
      goto source;
  source:
      {
  #ifdef _WIN32
          WSADATA wsaData;
          int wsaDataInit = 0;
  #endif
          int recvResult;
          struct sockaddr_in service;
          char *replace;
          SOCKET listenSocket = INVALID_SOCKET;
          SOCKET acceptSocket = INVALID_SOCKET;
          size_t dataLen = strlen(data);
          do
          {
  #ifdef _WIN32
              if (WSAStartup(MAKEWORD(2,2), &wsaData) != NO_ERROR)
              {
                  break;
              }
              wsaDataInit = 1;
  #endif
              /* POTENTIAL FLAW: Read data using a listen socket */
              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, (char *)(data + dataLen), sizeof(char) * (FILENAME_MAX - dataLen - 1), 0);
              if (recvResult == SOCKET_ERROR || recvResult == 0)
              {
                  break;
              }
              /* Append null terminator */
              data[dataLen + recvResult / sizeof(char)] = '\0';
              /* Eliminate CRLF */
              replace = strchr(data, '\r');
              if (replace)
              {
                  *replace = '\0';
              }
              replace = strchr(data, '\n');
              if (replace)
              {
                  *replace = '\0';
              }
          }
          while (0);
          if (listenSocket != INVALID_SOCKET)
          {
              CLOSE_SOCKET(listenSocket);
          }
          if (acceptSocket != INVALID_SOCKET)
          {
              CLOSE_SOCKET(acceptSocket);
          }
  #ifdef _WIN32
          if (wsaDataInit)
          {
              WSACleanup();
          }
  #endif
      }
      {
          FILE *pFile = NULL;
          /* POTENTIAL FLAW: Possibly opening a file without validating the file name or path */
          pFile = FOPEN(data, "wb+");
          if (pFile != NULL)
          {
              fclose(pFile);
          }
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B() - use goodsource and badsink by reversing the blocks on the goto statement */
  static void goodG2B()
  {
      char * data;
      char dataBuffer[FILENAME_MAX] = "";
      data = dataBuffer;
      goto source;
  source:
  #ifdef _WIN32
      /* FIX: Use a fixed, full path and file name */
      strcat(data, "c:\\temp\\file.txt");
  #else
      /* FIX: Use a fixed, full path and file name */
      strcat(data, "/tmp/file.txt");
  #endif
      {
          FILE *pFile = NULL;
          /* POTENTIAL FLAW: Possibly opening a file without validating the file name or path */
          pFile = FOPEN(data, "wb+");
          if (pFile != NULL)
          {
              fclose(pFile);
          }
      }
  }
  
  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 CWE36_Absolute_Path_Traversal__char_listen_socket_fopen_18; /* 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
  