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