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// Copyright (C) 2002 Hayato Fujiwara
// Copyright (C) 2010-2013 Olaf Till <i7tiol@t-online.de>
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#include <octave/oct.h>
#include <octave/load-save.h>
#include <octave/ls-oct-binary.h>
#include <octave/oct-stream.h>
#include <sys/socket.h>
#include <sys/poll.h>
#include <netinet/in.h>
#include <netdb.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
DEFUN_DLD (send, args, , "send (X, sockets)\n\
\n\
Send the variable 'X' to the computers specified by matrix 'sockets'\n.")
{
octave_value retval;
if (args.length () != 2)
{
error ("two arguments required\n");
return retval;
}
Matrix sockets = args(1).matrix_value ();
if (error_state)
return retval;
int rows = sockets.rows ();
if ((int) sockets.data ()[2 * rows]) // I'm the master
{
// This is code from original send.cc by Hayato Fujiwara
int num, pid, sock, nl, error_code;
struct pollfd *pollfd;
pollfd = (struct pollfd *) malloc (rows * sizeof (struct pollfd));
for(int i = 0; i < rows; i++)
{
sock = (int) sockets.data ()[i + rows];
pollfd[i].fd = sock;
pollfd[i].events = POLLIN;
}
num = poll (pollfd, rows, 0);
if (num)
{
for (int k = 0; k < rows; k++)
{
if (pollfd[k].revents && (pollfd[k].fd !=0))
{
sockaddr_in r_addr;
struct hostent *hehe;
socklen_t len = sizeof (r_addr);
getpeername (pollfd[k].fd, (sockaddr*) &r_addr, &len);
hehe = gethostbyaddr ((char *) &r_addr.sin_addr.s_addr,
sizeof (r_addr.sin_addr), AF_INET);
if (pollfd[k].revents & POLLIN)
{
pid = getpid ();
if (read (pollfd[k].fd, &nl, sizeof (int)) <
sizeof (int))
{
error ("read error");
break;
}
error_code = ntohl (nl);
if (write (pollfd[k].fd, &nl, sizeof (int)) <
sizeof (int))
{
error ("write error");
break;
}
error ("error occurred in %s\n\tsee "
"%s:/tmp/octave_error-%s_%5d.log for detail",
hehe->h_name, hehe->h_name, hehe->h_name, pid);
}
if (pollfd[k].revents & POLLERR)
{
error ("Error condition - %s", hehe->h_name);
break;
}
if (pollfd[k].revents & POLLHUP)
{
error("Hung up - %s", hehe->h_name);
break;
}
if (pollfd[k].revents & POLLNVAL)
{
error("fd not open - %s", hehe->h_name);
break;
}
}
}
}
free (pollfd);
if (error_state)
return retval;
}
double sid;
for (int id = 0; id < rows; id++)
{
if ((sid = sockets(id, 0)) != 0)
{
octave_stream os = octave_stream_list::lookup
(octave_value (sid), "send");
if (error_state)
{
error ("no valid stream id\n");
return retval;
}
if (! os.is_open ())
{
error ("stream not open\n");
return retval;
}
std::ostream *tps = os.output_stream ();
std::ostream& ps = *tps;
write_header (ps, LS_BINARY);
save_binary_data (ps, args(0), "a", "", false, false);
ps.flush ();
}
}
return retval;
}