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// $Id$
// ===========================================================
//
//
// = LIBRARY
// TAO/tests/Simple/chat
//
// = FILENAME
// Client_i.cpp
//
// = DESCRIPTION
// Implementation of the Client_i class.
//
// = AUTHOR
// Pradeep Gore <pradeep@cs.wustl.edu>
//
// ===========================================================
#include "Client_i.h"
#include "ace/Read_Buffer.h"
#include "tao/ORB.h"
#include "ace/Get_Opt.h"
Client_i::Client_i ()
: ior_file_name_ ("chat.ior"),
nickname_ ("noname")
{
}
Client_i::~Client_i (void)
{
// Make sure to cleanup the STDIN handler.
if (ACE_Event_Handler::remove_stdin_handler
(TAO_ORB_Core_instance ()->reactor (),
TAO_ORB_Core_instance ()->thr_mgr ()) == -1)
ACE_ERROR ((LM_ERROR,
"%p\n",
"remove_stdin_handler"));
}
int
Client_i::parse_args (int argc, char *argv[])
{
ACE_Get_Opt get_opts (argc, argv, "n:f:");
int specified_options = 0; // Flag to check if the user specified any options.
int c;
while ((c = get_opts ()) != -1)
switch (c)
{
case 'n': // get the users nickname
this->nickname_ = get_opts.optarg;
specified_options = 1;
break;
case 'f': // get the file name to write to
this->ior_file_name_ = get_opts.optarg;
specified_options = 1;
break;
default: // display help for use of the serve
case '?': // display help for use of the server.
ACE_ERROR_RETURN ((LM_ERROR,
"usage: %s"
" [-n] <your_nick_name>"
" [-f] <ior_input_file>"
"\n",
argv [0]),
-1);
}
if (specified_options == 0)
ACE_DEBUG ((LM_DEBUG,
"\nusing defaults. nickname = %s, filename = %s\n",
this->nickname_,
this->ior_file_name_));
return 0;
}
int
Client_i::init (int argc, char *argv[])
{
// Check if the command line arguments are ok.
if (this->parse_args (argc, argv) == -1)
return -1;
CORBA::Environment TAO_TRY_ENV;
TAO_TRY
{
// Retrieve the ORB.
this->orb_ = CORBA::ORB_init (argc,
argv,
0,
TAO_TRY_ENV);
TAO_CHECK_ENV;
// set the orb in the receiver_i_ object.
this->receiver_i_.orb (this->orb_.in ());
// read the ior from file
if (this->read_ior (this->ior_file_name_) != 0)
ACE_ERROR_RETURN ((LM_ERROR,
"could not read the ior from the file: <%s>\n",
this->ior_file_name_),
-1);
CORBA::Object_var server_object =
this->orb_->string_to_object (this->ior_,
TAO_TRY_ENV);
TAO_CHECK_ENV;
if (CORBA::is_nil (server_object.in ()))
ACE_ERROR_RETURN ((LM_ERROR,
"invalid ior <%s>\n",
this->ior_),
-1);
this->server_ = Broadcaster::_narrow (server_object.in (),
TAO_TRY_ENV);
TAO_CHECK_ENV;
}
TAO_CATCHANY
{
TAO_TRY_ENV.print_exception ("client_i::init\n");
return -1;
}
TAO_ENDTRY;
// Register our <Input_Handler> to handle STDIN events, which will
// trigger the <handle_input> method to process these events.
if (ACE_Event_Handler::register_stdin_handler
(this,
TAO_ORB_Core_instance ()->reactor (),
TAO_ORB_Core_instance ()->thr_mgr ()) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
"%p\n",
"register_stdin_handler"),
-1);
return 0;
}
int
Client_i::run (void)
{
ACE_DEBUG ((LM_DEBUG,
"\n============= Simple Chat =================\n"
"========== type 'quit' to exit ===========\n"));
CORBA::Environment TAO_TRY_ENV;
TAO_TRY
{
this->receiver_var_ =
this->receiver_i_._this (TAO_TRY_ENV);
TAO_CHECK_ENV;
// Register ourselves with the server.
server_->add (this->receiver_var_.in (),
this->nickname_,
TAO_TRY_ENV);
TAO_CHECK_ENV;
// Run the ORB.
this->orb_->run ();
}
TAO_CATCHANY
{
TAO_TRY_ENV.print_exception ("Client_i::run ()");
return -1;
}
TAO_ENDTRY;
return 0;
}
int
Client_i::handle_input (ACE_HANDLE)
{
char buf[BUFSIZ];
if (ACE_OS::fgets (buf, BUFSIZ, stdin) == 0)
return 0;
CORBA::Environment TAO_TRY_ENV;
TAO_TRY
{
// Check if the user wants to quit.
if (ACE_OS::strncmp (buf,
QUIT_STRING,
ACE_OS::strlen (QUIT_STRING)) == 0)
{
// Remove ourselves from the server.
this->server_->remove (this->receiver_var_.in ());
this->receiver_i_.shutdown (TAO_TRY_ENV);
TAO_CHECK_ENV;
return 0;
}
// Call the server function <say> to pass the string typed by
// the server.
this->server_->say (this->receiver_var_.in (),
buf,
TAO_TRY_ENV);
TAO_CHECK_ENV;
}
TAO_CATCHANY
{
TAO_TRY_ENV.print_exception ("Input_Handler::init");
return -1;
}
TAO_ENDTRY;
return 0;
}
int
Client_i::read_ior (const char *filename)
{
// Open the file for reading.
ACE_HANDLE f_handle = ACE_OS::open (filename, 0);
if (f_handle == ACE_INVALID_HANDLE)
ACE_ERROR_RETURN ((LM_ERROR,
"Unable to open %s for writing: %p\n",
filename,
"invalid handle"),
-1);
ACE_Read_Buffer ior_buffer (f_handle);
char *data = ior_buffer.read ();
if (data == 0)
ACE_ERROR_RETURN ((LM_ERROR,
"Unable to read ior: %p\n"),
-1);
this->ior_ = ACE_OS::strdup (data);
ior_buffer.alloc ()->free (data);
ACE_OS::close (f_handle);
if (this->ior_ == 0)
ACE_ERROR_RETURN ((LM_ERROR,
"failed to read ior from file\n",
""),
-1);
return 0;
}
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