/* net-obj.c --
* Copyright (C) 2008, 2009 SEIKO EPSON CORPORATION
*
* License: GPLv2+|iscan
* Authors: AVASYS CORPORATION
*
* This file is part of the SANE backend distributed with Image Scan!
*
* Image Scan!'s SANE backend 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 2 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 ought to have received a copy of the GNU General Public License
* along with this package. If not, see .
*
*
* Linking Image Scan!'s SANE backend statically or dynamically with
* other modules is making a combined work based on this SANE backend.
* Thus, the terms and conditions of the GNU General Public License
* cover the whole combination.
*
* As a special exception, the copyright holders of Image Scan!'s SANE
* backend give you permission to link Image Scan!'s SANE backend with
* SANE frontends that communicate with Image Scan!'s SANE backend
* solely through the SANE Application Programming Interface,
* regardless of the license terms of these SANE frontends, and to
* copy and distribute the resulting combined work under terms of your
* choice, provided that every copy of the combined work is
* accompanied by a complete copy of the source code of Image Scan!'s
* SANE backend (the version of Image Scan!'s SANE backend used to
* produce the combined work), being distributed under the terms of
* the GNU General Public License plus this exception. An independent
* module is a module which is not derived from or based on Image
* Scan!'s SANE backend.
*
* As a special exception, the copyright holders of Image Scan!'s SANE
* backend give you permission to link Image Scan!'s SANE backend with
* independent modules that communicate with Image Scan!'s SANE
* backend solely through the "Interpreter" interface, regardless of
* the license terms of these independent modules, and to copy and
* distribute the resulting combined work under terms of your choice,
* provided that every copy of the combined work is accompanied by a
* complete copy of the source code of Image Scan!'s SANE backend (the
* version of Image Scan!'s SANE backend used to produce the combined
* work), being distributed under the terms of the GNU General Public
* License plus this exception. An independent module is a module
* which is not derived from or based on Image Scan!'s SANE backend.
*
* Note that people who make modified versions of Image Scan!'s SANE
* backend are not obligated to grant special exceptions for their
* modified versions; it is their choice whether to do so. The GNU
* General Public License gives permission to release a modified
* version without this exception; this exception also makes it
* possible to release a modified version which carries forward this
* exception.
*/
#ifdef HAVE_CONFIG_H
#include
#endif
#include "net-obj.h"
#include "defines.h"
#include "ipc.h"
#include "message.h"
const char *net_prog_name = "network";
static process *net = NULL;
void *
net_init (const char *pkglibdir, SANE_Status *status)
{
log_call ("(%s, %p)", pkglibdir, status);
if (net)
{
err_minor ("been here, done that");
if (status) *status = SANE_STATUS_GOOD;
return net;
}
if (!pkglibdir) return NULL;
net = ipc_exec (net_prog_name, pkglibdir, status);
return net;
}
void *
net_exit (void *self)
{
log_call ("(%p)", self);
require (net == self);
if (net)
{
net = ipc_kill (net);
promise (!net);
}
return net;
}
/*! Obtain the socket connected to the network plugin
*/
int
net_get_sock (void *self)
{
log_call ("(%p)", self);
require (net == self);
if (net) return net->socket;
return -1;
}