581 lines
21 KiB
C
581 lines
21 KiB
C
/*
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This file is part of g15daemon.
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g15daemon is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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g15daemon is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with g15daemon; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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(c) 2006-2008 Mike Lampard, Philip Lawatsch, and others
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$Revision: 457 $ - $Date: 2008-01-31 15:32:46 +1030 (Thu, 31 Jan 2008) $ $Author: mlampard $
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This daemon listens on localhost port 15550 for client connections,
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and arbitrates LCD display. Allows for multiple simultaneous clients.
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Client screens can be cycled through by pressing the 'L1' key.
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*/
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <pwd.h>
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#include <ctype.h>
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#include <config.h>
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#include <libg15.h>
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#include <libg15render.h>
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#include "g15daemon.h"
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#ifndef LIBG15_VERSION
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#define LIBG15_VERSION 1000
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#endif
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/* all threads will exit if leaving >0 */
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volatile int leaving = 0;
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int keyboard_backlight_off_onexit = 0;
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unsigned int g15daemon_debug = 0;
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unsigned int cycle_key;
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unsigned int client_handles_keys = 0;
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static unsigned int set_backlight = 0;
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struct lcd_t *keyhandler = NULL;
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static int loaded_plugins = 0;
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/* send event to foreground client's eventlistener */
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int g15daemon_send_event(void *caller, unsigned int event, unsigned long value)
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{
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switch(event) {
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case G15_EVENT_KEYPRESS: {
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static unsigned long lastkeys;
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if(!(value & cycle_key) && !(lastkeys & cycle_key)){
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lcd_t *lcd = (lcd_t*)caller;
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if(!lcd->g15plugin->info)
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break;
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int *(*plugin_listener)(plugin_event_t *newevent) = (void*)lcd->g15plugin->info->event_handler;
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plugin_event_t *newevent=g15daemon_xmalloc(sizeof(plugin_event_t));
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newevent->event = event;
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newevent->value = value;
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newevent->lcd = lcd;
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(*plugin_listener)((void*)newevent);
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/* hack - keyboard events are always sent from the foreground even when they aren't
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send keypress event to the OS keyboard_handler plugin */
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if(lcd->masterlist->keyboard_handler != NULL && lcd->masterlist->remote_keyhandler_sock==0) {
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int *(*keyboard_handler)(plugin_event_t *newevent) = (void*)lcd->masterlist->keyboard_handler;
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(*keyboard_handler)((void*)newevent);
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}
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// if we have a remote keyhandler, send the key. FIXME: we should do this from the net plugin
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if(lcd->masterlist->remote_keyhandler_sock!=0) {
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if((send(lcd->masterlist->remote_keyhandler_sock,(void *)&newevent->value,sizeof(newevent->value),0))<0)
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g15daemon_log(LOG_WARNING,"Error in send: %s\n",strerror(errno));
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}
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if(value & G15_KEY_LIGHT){ // the backlight key was pressed - maintain user-selected state
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lcd_t *displaying = lcd->masterlist->current->lcd;
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lcd->masterlist->kb_backlight_state++;
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lcd->masterlist->kb_backlight_state %= 3;
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displaying->backlight_state++;
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displaying->backlight_state %= 3; // limit to 0-2 inclusive
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}
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if(value & G15_KEY_M1 && value & G15_KEY_M3) {
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static int scr_num=0;
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char filename[128];
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lcd_t *displaying = lcd->masterlist->current->lcd;
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sprintf(filename,"/tmp/g15daemon-sc-%i.pbm",scr_num);
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uf_screendump_pbm(displaying->buf,filename);
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scr_num++;
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}
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free(newevent);
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}else{
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/* hacky attempt to double-time the use of L1, if the key is pressed less than half a second, it cycles the screens. If held for longer, the key is sent to the application for use instead */
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lcd_t *lcd = (lcd_t*)caller;
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g15daemon_t* masterlist = lcd->masterlist;
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static unsigned int clicktime;
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if(value & cycle_key) {
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clicktime=g15daemon_gettime_ms();
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}else{
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unsigned int unclick=g15daemon_gettime_ms();
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if ((unclick-clicktime)<500) {
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g15daemon_lcdnode_cycle(masterlist);
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}
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else
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{
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plugin_event_t *clickevent=g15daemon_xmalloc(sizeof(plugin_event_t));
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int *(*plugin_listener)(plugin_event_t *clickevent) = (void*)lcd->g15plugin->info->event_handler;
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clickevent->event = event;
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clickevent->value = value|cycle_key;
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clickevent->lcd = lcd;
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(*plugin_listener)((void*)clickevent);
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clickevent->event = event;
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clickevent->value = value&~cycle_key;
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clickevent->lcd = lcd;
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(*plugin_listener)((void*)clickevent);
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free(clickevent);
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}
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}
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}
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lastkeys = value;
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break;
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}
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case G15_EVENT_CYCLE_PRIORITY:{
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lcd_t *lcd = (lcd_t*)caller;
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g15daemon_t* masterlist = lcd->masterlist;
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if(value)
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g15daemon_lcdnode_cycle(masterlist);
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break;
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}
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case G15_EVENT_REQ_PRIORITY: {
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lcdnode_t *lcdnode=(lcdnode_t*)caller;
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/* client wants to switch priorities */
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pthread_mutex_lock(&lcdlist_mutex);
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if(lcdnode->list->current != lcdnode){
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lcdnode->last_priority = lcdnode->list->current;
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lcdnode->list->current = lcdnode;
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}
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else {
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if(lcdnode->list->current == lcdnode->last_priority){
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lcdnode->list->current = lcdnode->list->current->prev;
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} else{
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if(lcdnode->last_priority != NULL) {
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lcdnode->list->current = lcdnode->last_priority;
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lcdnode->last_priority = NULL;
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}
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else
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lcdnode->list->current = lcdnode->list->current->prev;
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}
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}
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pthread_mutex_unlock(&lcdlist_mutex);
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g15daemon_send_refresh((lcd_t*)lcdnode->list->current->lcd);
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break;
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}
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case G15_EVENT_VISIBILITY_CHANGED:
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g15daemon_send_refresh((lcd_t*)caller);
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default: {
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lcd_t *lcd = (lcd_t*)caller;
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int *(*plugin_listener)(plugin_event_t *newevent) = (void*)lcd->g15plugin->info->event_handler;
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plugin_event_t *newevent=g15daemon_xmalloc(sizeof(plugin_event_t));
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newevent->event = event;
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newevent->value = value;
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newevent->lcd = lcd;
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(*plugin_listener)((void*)newevent);
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free(newevent);
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}
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}
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return 0;
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}
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static void *keyboard_watch_thread(void *lcdlist){
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g15daemon_t *masterlist = (g15daemon_t*)(lcdlist);
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unsigned int keypresses = 0;
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int retval = 0;
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static int lastkeys = 0;
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while (!leaving) {
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retval = uf_read_keypresses(&keypresses, 20);
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/* every 2nd packet contains the codes we want.. immediately try again */
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while (retval == G15_ERROR_TRY_AGAIN){
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retval = uf_read_keypresses(&keypresses, 20);
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}
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if(retval == G15_NO_ERROR && lastkeys != keypresses) {
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g15daemon_send_event(masterlist->current->lcd,
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G15_EVENT_KEYPRESS, keypresses);
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lastkeys = keypresses;
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}else if(retval == -ENODEV && LIBG15_VERSION>=1200) {
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pthread_mutex_lock(&g15lib_mutex);
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while((retval=re_initLibG15() != G15_NO_ERROR) && !leaving){
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g15daemon_log(LOG_WARNING,"Keyboard has gone.. Retrying\n");
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sleep(1);
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}
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if(!leaving) {
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masterlist->current->lcd->state_changed=1;
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g15daemon_send_refresh(masterlist->current->lcd);
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}
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pthread_mutex_unlock(&g15lib_mutex);
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}
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g15daemon_msleep(40);
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}
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return NULL;
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}
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static void *lcd_draw_thread(void *lcdlist){
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g15daemon_t *masterlist = (g15daemon_t*)(lcdlist);
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/* unsigned int fps = 0; */
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lcd_t *displaying = masterlist->tail->lcd;
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memset(displaying->buf,0,1024);
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static int prev_state=0;
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g15daemon_sleep(2);
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while (!leaving) {
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/* wait until a client has updated */
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g15daemon_wait_refresh();
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pthread_mutex_lock(&lcdlist_mutex);
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displaying = masterlist->current->lcd;
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/* monitor 'fps' - due to the TCP protocol, some frames will be bunched up.
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discard excess to reduce load on the bus */
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/* fps = 1000 / (g15daemon_gettime_ms() - lastscreentime); */
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/* if the current screen is less than 20ms from the previous (equivelant to 50fps) delay it */
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/* this allows a real-world fps of 40fps with no almost frame loss and reduces peak usb bus-load */
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g15daemon_log(LOG_DEBUG,"Updating LCD");
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uf_write_buf_to_g15(displaying);
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g15daemon_log(LOG_DEBUG,"LCD Update Complete");
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if(prev_state!=displaying->backlight_state && set_backlight!=0) {
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prev_state=displaying->backlight_state;
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pthread_mutex_lock(&g15lib_mutex);
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setLCDBrightness(displaying->backlight_state);
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usleep(5);
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setLCDBrightness(displaying->backlight_state);
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setKBBrightness(displaying->backlight_state);
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pthread_mutex_unlock(&g15lib_mutex);
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}
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if(displaying->state_changed){
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pthread_mutex_lock(&g15lib_mutex);
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setLCDContrast(displaying->contrast_state);
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if(displaying->masterlist->remote_keyhandler_sock==0) // only allow mled control if the macro recorder isnt running
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setLEDs(displaying->mkey_state);
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pthread_mutex_unlock(&g15lib_mutex);
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displaying->state_changed = 0;
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}
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pthread_mutex_unlock(&lcdlist_mutex);
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}
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return NULL;
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}
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void g15daemon_sighandler(int sig) {
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switch(sig){
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case SIGUSR1:
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keyboard_backlight_off_onexit = 1;
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case SIGINT:
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case SIGTERM:
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case SIGQUIT:
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leaving = 1;
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break;
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case SIGPIPE:
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break;
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}
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}
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#ifndef HAVE_DAEMON
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/* daemon() is not posix compliant, so we roll our own if needed.*/
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int daemon(int nochdir, int noclose) {
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pid_t pid;
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if(nochdir<1)
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chdir("/");
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pid = fork();
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switch(pid){
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case -1:
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printf("Unable to daemonise!\n");
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return -1;
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break;
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case 0: {
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umask(0);
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if(setsid()==-1) {
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perror("setsid");
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return -1;
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}
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if(noclose<1) {
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freopen( "/dev/null", "r", stdin);
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freopen( "/dev/null", "w", stdout);
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freopen( "/dev/null", "w", stderr);
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}
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break;
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}
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default:
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_exit(0);
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}
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return 0;
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}
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#endif
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int main (int argc, char *argv[])
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{
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pid_t daemonpid;
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int retval;
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int i;
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int cycle_cmdline_override=0;
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struct sigaction new_action;
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cycle_key = G15_KEY_L1;
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unsigned char user[256];
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unsigned int lcdlevel = 1;
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pthread_t keyboard_thread;
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pthread_t lcd_thread;
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memset(user,0,256);
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for (i=0;i<argc;i++) {
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char daemonargs[20];
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memset(daemonargs,0,20);
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strncpy(daemonargs,argv[i],19);
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if (!strncmp(daemonargs, "-k",2) || !strncmp(daemonargs, "--kill",6)) {
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daemonpid = uf_return_running();
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if(daemonpid>0) {
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kill(daemonpid,SIGINT);
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} else
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printf("G15Daemon not running\n");
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exit(0);
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}
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if (!strncmp(daemonargs, "-K",2) || !strncmp(daemonargs, "--KILL",6)) {
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daemonpid = uf_return_running();
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if(daemonpid>0) {
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kill(daemonpid,SIGUSR1);
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} else
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printf("G15Daemon not running\n");
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exit(0);
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}
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if (!strncmp(daemonargs, "-v",2) || !strncmp(daemonargs, "--version",9)) {
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float lg15ver = LIBG15_VERSION;
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printf("G15Daemon version %s - %s\n",VERSION,uf_return_running() >= 0 ?"Loaded & Running":"Not Running");
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printf("compiled with libg15 version %.3f\n\n",lg15ver/1000);
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exit(0);
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}
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if (!strncmp(daemonargs, "-h",2) || !strncmp(daemonargs, "--help",6)) {
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printf("G15Daemon version %s - %s\n",VERSION,uf_return_running() >= 0 ?"Loaded & Running":"Not Running");
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printf("%s -h (--help) or -k (--kill) or -s (--switch) or -d (--debug) [level] or -v (--version) or -l (--lcdlevel) [0-2] \n\n -k\twill kill a previous incarnation",argv[0]);
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#ifdef LIBG15_VERSION
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#if LIBG15_VERSION >= 1200
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printf("\n -K\tturn off the keyboard backlight on the way out.");
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#endif
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#endif
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printf("\n -h\tshows this help\n -s\tchanges the screen-switch key from L1 to MR (beware)\n -d\tdebug mode - stay in foreground and output all debug messages to STDERR\n -v\tshow version\n -l\tset default LCD backlight level\n");
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printf(" --set-backlight sets backlight individually for currently shown screen.\n\t\tDefault is to set backlight globally (keyboard default).\n");
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exit(0);
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}
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if (!strncmp(daemonargs, "-s",2) || !strncmp(daemonargs, "--switch",8)) {
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cycle_key = G15_KEY_MR;
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cycle_cmdline_override=1;
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}
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if (!strncmp(daemonargs, "--set-backlight",15)) {
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set_backlight = 1;
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}
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if (!strncmp(daemonargs, "-d",2) || !strncmp(daemonargs, "--debug",7)) {
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g15daemon_debug = 1;
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if((argv[i+1])!=NULL)
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if(isdigit(argv[i+1][0])){
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g15daemon_debug = atoi(argv[i+1]);
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if(g15daemon_debug==0) g15daemon_debug = 1;
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}
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}
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if (!strncmp(daemonargs, "-u",2) || !strncmp(daemonargs, "--user",7)) {
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if(argv[i+1]!=NULL){
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strncpy((char*)user,argv[i+1],128);
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i++;
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}
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}
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if (!strncmp(daemonargs, "-l",2) || !strncmp(daemonargs, "--lcdlevel",7)) {
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if((argv[i+1])!=NULL)
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if(isdigit(argv[i+1][0])){
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lcdlevel = atoi(argv[i+1]);
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}
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}
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}
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if(g15daemon_debug){
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g15daemon_log(LOG_INFO, "G15Daemon %s Build Date: %s",PACKAGE_VERSION,BUILD_DATE);
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g15daemon_log(LOG_DEBUG, "Build OS: %s",BUILD_OS_NAME);
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g15daemon_log(LOG_DEBUG, "With compiler: %s",COMPILER_VERSION);
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fprintf(stderr, "G15Daemon CMDLINE ARGS: ");
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for(i=1;i<argc;i++)
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fprintf(stderr, "%s ",argv[i]);
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fprintf(stderr,"\n");
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}
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if(uf_return_running()>=0) {
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g15daemon_log(LOG_ERR,"G15Daemon already running.. Exiting");
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exit(0);
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}
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/* set libg15 debugging to our debug setting */
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if(LIBG15_VERSION>=1200)
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libg15Debug(g15daemon_debug);
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#ifdef OSTYPE_DARWIN
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/* OS X: load codeless kext */
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retval = system("/sbin/kextload " "/System/Library/Extensions/libusbshield.kext");
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if (WIFEXITED(retval)){
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if (WEXITSTATUS(retval) !=0){
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g15daemon_log(LOG_ERR,"Unable to load USB shield kext...exiting");
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exit(1);
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}
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} else {
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g15daemon_log(LOG_ERR,"Unable to launch kextload...exiting");
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exit(1);
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}
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#endif
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/* init stuff here.. */
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if((retval=initLibG15())!=G15_NO_ERROR){
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g15daemon_log(LOG_ERR,"Unable to attach to the G15 Keyboard... exiting");
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exit(1);
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}
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if(!g15daemon_debug)
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daemon(0,0);
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|
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if(uf_create_pidfile() == 0) {
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g15daemon_t *lcdlist;
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config_section_t *global_cfg=NULL;
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pthread_attr_t attr;
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struct passwd *nobody;
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unsigned char location[1024];
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openlog("g15daemon", LOG_PID, LOG_USER);
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if(strlen((char*)user)==0){
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nobody = getpwnam("nobody");
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}else {
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nobody = getpwnam((char*)user);
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}
|
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if (nobody==NULL)
|
|
{
|
|
nobody = getpwuid(geteuid());
|
|
g15daemon_log(LOG_WARNING,"BEWARE: running as effective uid %i\n",nobody->pw_uid);
|
|
}
|
|
|
|
/* initialise the linked list */
|
|
lcdlist = ll_lcdlist_init();
|
|
lcdlist->nobody = nobody;
|
|
|
|
setLCDContrast(1);
|
|
setLEDs(0);
|
|
lcdlist->kb_backlight_state=1;
|
|
lcdlist->current->lcd->backlight_state=lcdlevel;
|
|
setLCDBrightness(lcdlevel);
|
|
|
|
#ifdef LIBG15_VERSION
|
|
#if LIBG15_VERSION >= 1200
|
|
setKBBrightness(lcdlist->kb_backlight_state);
|
|
#endif
|
|
#endif
|
|
|
|
uf_conf_open(lcdlist, "/etc/g15daemon.conf");
|
|
global_cfg=g15daemon_cfg_load_section(lcdlist,"Global");
|
|
if(!cycle_cmdline_override){
|
|
cycle_key = 1==g15daemon_cfg_read_bool(global_cfg,"Use MR as Cycle Key",0)?G15_KEY_MR:G15_KEY_L1;
|
|
}
|
|
|
|
#ifndef OSTYPE_SOLARIS
|
|
/* all other processes/threads should be seteuid nobody */
|
|
if(nobody!=NULL) {
|
|
seteuid(nobody->pw_uid);
|
|
setegid(nobody->pw_gid);
|
|
}
|
|
#endif
|
|
/* initialise the pthread condition for the LCD thread */
|
|
g15daemon_init_refresh();
|
|
pthread_mutex_init(&g15lib_mutex, NULL);
|
|
pthread_attr_init(&attr);
|
|
|
|
pthread_attr_setstacksize(&attr,512*1024); /* set stack to 512k - dont need 8Mb !! */
|
|
if (pthread_create(&keyboard_thread, &attr, keyboard_watch_thread, lcdlist) != 0) {
|
|
g15daemon_log(LOG_ERR,"Unable to create keyboard listener thread. Exiting");
|
|
goto exitnow;
|
|
}
|
|
|
|
pthread_attr_setstacksize(&attr,128*1024);
|
|
|
|
if (pthread_create(&lcd_thread, &attr, lcd_draw_thread, lcdlist) != 0) {
|
|
g15daemon_log(LOG_ERR,"Unable to create display thread. Exiting");
|
|
goto exitnow;
|
|
}
|
|
g15daemon_log(LOG_INFO,"%s loaded\n",PACKAGE_STRING);
|
|
|
|
snprintf((char*)location,1024,"%s/%s",DATADIR,"g15daemon/splash/g15logo2.wbmp");
|
|
g15canvas *canvas = (g15canvas *)g15daemon_xmalloc (sizeof (g15canvas));
|
|
memset (canvas->buffer, 0, G15_BUFFER_LEN);
|
|
canvas->mode_cache = 0;
|
|
canvas->mode_reverse = 0;
|
|
canvas->mode_xor = 0;
|
|
g15r_loadWbmpSplash(canvas,(char*)location);
|
|
memcpy (lcdlist->tail->lcd->buf, canvas->buffer, G15_BUFFER_LEN);
|
|
free (canvas);
|
|
uf_write_buf_to_g15(lcdlist->tail->lcd);
|
|
|
|
snprintf((char*)location,1024,"%s",PLUGINDIR);
|
|
|
|
loaded_plugins = g15_open_all_plugins(lcdlist,(char*)location);
|
|
|
|
new_action.sa_handler = g15daemon_sighandler;
|
|
new_action.sa_flags = 0;
|
|
sigaction(SIGINT, &new_action, NULL);
|
|
sigaction(SIGQUIT, &new_action, NULL);
|
|
sigaction(SIGTERM, &new_action, NULL);
|
|
sigaction(SIGUSR1, &new_action, NULL);
|
|
|
|
do {
|
|
pause();
|
|
} while( leaving == 0);
|
|
|
|
g15daemon_log(LOG_INFO,"Leaving by request");
|
|
|
|
pthread_join(lcd_thread,NULL);
|
|
pthread_join(keyboard_thread,NULL);
|
|
/* switch off the lcd backlight */
|
|
char *blank=g15daemon_xmalloc(G15_BUFFER_LEN);
|
|
writePixmapToLCD((unsigned char*)blank);
|
|
free(blank);
|
|
setLCDBrightness(0);
|
|
#ifdef LIBG15_VERSION
|
|
#if LIBG15_VERSION >= 1200
|
|
/* if SIGUSR1 was sent to kill us, switch off the keyboard backlight as well */
|
|
if(keyboard_backlight_off_onexit==1)
|
|
setKBBrightness(0);
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef LIBG15_VERSION
|
|
#if LIBG15_VERSION >= 1100
|
|
exitLibG15();
|
|
#endif
|
|
#endif
|
|
ll_lcdlist_destroy(&lcdlist);
|
|
|
|
exitnow:
|
|
/* return to root privilages for the final countdown */
|
|
seteuid(0);
|
|
setegid(0);
|
|
closelog();
|
|
g15daemon_quit_refresh();
|
|
uf_conf_write(lcdlist,"/etc/g15daemon.conf");
|
|
uf_conf_free(lcdlist);
|
|
unlink("/var/run/g15daemon.pid");
|
|
}
|
|
return 0;
|
|
}
|