ACE/ace/FILE_Connector.cpp

   1 #include "ace/FILE_Connector.h"
   2 #include "ace/Handle_Ops.h"
   3 #include "ace/OS_NS_stdlib.h"
   4 #if defined (ACE_HAS_ALLOC_HOOKS)
   5 # include "ace/Malloc_Base.h"
   6 #endif /* ACE_HAS_ALLOC_HOOKS */
   7
   8 #if !defined (__ACE_INLINE__)
   9 #include "ace/FILE_Connector.inl"
  10 #endif /* __ACE_INLINE__ */
  11
  12
  13
  14 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  15
  16 ACE_ALLOC_HOOK_DEFINE(ACE_FILE_Connector)
  17
  18 void
  19 ACE_FILE_Connector::dump (void) const
  20 {
  21 #if defined (ACE_HAS_DUMP)
  22   ACE_TRACE ("ACE_FILE_Connector::dump");
  23
  24   ACELIB_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
  25   ACELIB_DEBUG ((LM_DEBUG,  ACE_TEXT ("\n")));
  26   ACELIB_DEBUG ((LM_DEBUG, ACE_END_DUMP));
  27 #endif /* ACE_HAS_DUMP */
  28 }
  29
  30 ACE_FILE_Connector::ACE_FILE_Connector (void)
  31 {
  32   ACE_TRACE ("ACE_FILE_Connector::ACE_FILE_Connector");
  33 }
  34
  35 int
  36 ACE_FILE_Connector::connect (ACE_FILE_IO &new_io,
  37                              const ACE_FILE_Addr &remote_sap,
  38                              ACE_Time_Value *timeout,
  39                              const ACE_Addr &,
  40                              int,
  41                              int flags,
  42                              int perms)
  43 {
  44   ACE_TRACE ("ACE_FILE_Connector::connect");
  45   ACE_ASSERT (new_io.get_handle () == ACE_INVALID_HANDLE);
  46
  47   ACE_HANDLE handle = ACE_INVALID_HANDLE;
  48
  49   // Check to see if caller has requested that we create the filename.
  50   if (reinterpret_cast<const ACE_Addr &> (
  51         const_cast<ACE_FILE_Addr &> (remote_sap)) == ACE_Addr::sap_any)
  52     {
  53       // Create a new temporary file.
  54       // Use ACE_OS::mkstemp() if it is available since it avoids a
  55       // race condition, and subsequently a security hole due to that
  56       // race condition (specifically, a denial-of-service attack).
  57       //
  58       // However, using mkstemp() prevents us from doing a timed open
  59       // since it opens the file for us.  Better to avoid the race
  60       // condition.
  61       char filename[] = "ace-file-XXXXXX";
  62
  63       handle = ACE_OS::mkstemp (filename); // mkstemp() replaces "XXXXXX"
  64
  65       if (handle == ACE_INVALID_HANDLE
  66           || new_io.addr_.set (ACE_TEXT_CHAR_TO_TCHAR (filename)) != 0)
  67         return -1;
  68
  69       new_io.set_handle (handle);
  70
  71       return 0;
  72     }
  73   else
  74     new_io.addr_ = remote_sap; // class copy.
  75
  76   handle = ACE::handle_timed_open (timeout,
  77                                    new_io.addr_.get_path_name (),
  78                                    flags,
  79                                    perms);
  80
  81   new_io.set_handle (handle);
  82   return handle == ACE_INVALID_HANDLE ? -1 : 0;
  83 }
  84
  85 ACE_END_VERSIONED_NAMESPACE_DECL