Desktop
/* $Id: xterm.c,v 1.9 2012/09/22 01:21:51 khorben Exp $ */
/* Copyright (c) 2011-2012 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Locker */
/* 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, version 3 of the License.
*
* 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, see <http://www.gnu.org/licenses/>. */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <gdk/gdkx.h>
#include <System.h>
#include "Locker/demo.h"
#include "../../config.h"
#ifndef PREFIX
# define PREFIX "/usr/local"
#endif
/* XTerm */
/* private */
/* types */
typedef struct _XTermWindow
{
GdkWindow * window;
GPid pid;
} XTermWindow;
typedef struct _LockerDemo
{
LockerDemoHelper * helper;
/* windows */
XTermWindow * windows;
size_t windows_cnt;
} XTerm;
/* prototypes */
/* plug-in */
static XTerm * _xterm_init(LockerDemoHelper * helper);
static void _xterm_destroy(XTerm * xterm);
static int _xterm_add(XTerm * xterm, GdkWindow * window);
static void _xterm_remove(XTerm * xterm, GdkWindow * window);
static void _xterm_start(XTerm * xterm);
static void _xterm_stop(XTerm * xterm);
/* public */
/* variables */
/* plug-in */
LockerDemoDefinition plugin =
{
"XTerm",
NULL,
NULL,
_xterm_init,
_xterm_destroy,
_xterm_add,
_xterm_remove,
_xterm_start,
_xterm_stop
};
/* private */
/* functions */
/* plug-in */
/* xterm_init */
static XTerm * _xterm_init(LockerDemoHelper * helper)
{
XTerm * xterm;
if((xterm = object_new(sizeof(*xterm))) == NULL)
return NULL;
xterm->helper = helper;
xterm->windows = NULL;
xterm->windows_cnt = 0;
return xterm;
}
/* xterm_destroy */
static void _xterm_destroy(XTerm * xterm)
{
size_t i;
/* kill the remaining children */
for(i = 0; i < xterm->windows_cnt; i++)
if(xterm->windows[i].pid > 0)
kill(xterm->windows[i].pid, SIGTERM);
free(xterm->windows);
object_delete(xterm);
}
/* xterm_add */
static XTermWindow * _add_allocate(XTerm * xterm);
static int _xterm_add(XTerm * xterm, GdkWindow * window)
{
int ret = 0;
LockerDemoHelper * helper = xterm->helper;
XTermWindow * w;
unsigned long id = GDK_WINDOW_XID(window);
GError * error = NULL;
char * argv[] = { NULL, "-into", NULL, "-e", NULL, NULL };
char const * p;
char buf[16];
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() %u\n", __func__, id);
#endif
if((w = _add_allocate(xterm)) == NULL)
return -1; /* XXX report error */
if((p = helper->config_get(helper->locker, "xterm", "xterm")) != NULL)
argv[0] = strdup(p);
else
argv[0] = strdup(PREFIX "/bin/xterm");
if((p = helper->config_get(helper->locker, "xterm", "command")) != NULL)
argv[4] = strdup(p);
else
argv[4] = strdup("top");
snprintf(buf, sizeof(buf), "%lu", id);
argv[2] = buf;
if(argv[0] == NULL || argv[4] == NULL)
{
free(argv[0]);
free(argv[4]);
return -helper->error(NULL, strerror(errno), 1);
}
if(g_spawn_async(NULL, argv, NULL, 0, NULL, NULL, &w->pid, &error)
!= TRUE)
{
ret = -helper->error(NULL, error->message, 1);
g_error_free(error);
}
w->window = window;
return ret;
}
static XTermWindow * _add_allocate(XTerm * xterm)
{
XTermWindow * w;
size_t i;
/* look for a free window */
for(i = 0; i < xterm->windows_cnt; i++)
if(xterm->windows[i].window == NULL)
return &xterm->windows[i];
/* allocate a window */
i = xterm->windows_cnt + 1;
if((w = realloc(xterm->windows, sizeof(*w) * i)) == NULL)
return NULL;
xterm->windows = w;
w = &xterm->windows[xterm->windows_cnt++];
w->window = NULL;
w->pid = -1;
return w;
}
/* xterm_remove */
static void _xterm_remove(XTerm * xterm, GdkWindow * window)
{
size_t i;
XTermWindow * w;
for(i = 0; i < xterm->windows_cnt; i++)
if(xterm->windows[i].window == window)
{
w = &xterm->windows[i];
w->window = NULL;
kill(w->pid, SIGTERM);
w->pid = -1;
return;
}
/* FIXME free some memory */
}
/* xterm_start */
static void _xterm_start(XTerm * xterm)
{
size_t i;
for(i = 0; i < xterm->windows_cnt; i++)
if(xterm->windows[i].pid > 0)
kill(xterm->windows[i].pid, SIGCONT);
}
/* xterm_stop */
static void _xterm_stop(XTerm * xterm)
{
size_t i;
for(i = 0; i < xterm->windows_cnt; i++)
if(xterm->windows[i].pid > 0)
kill(xterm->windows[i].pid, SIGSTOP);
}