Initial revision
This commit is contained in:
William Ferrell
+369
@@ -0,0 +1,369 @@
|
||||
/*
|
||||
main.c for LCDd
|
||||
|
||||
Contains main(), plus signal callback functions and a help screen.
|
||||
|
||||
Program init, command-line handling, and the main loop are
|
||||
implemented here. Also, minimal data about the program such as
|
||||
the revision number.
|
||||
|
||||
Some of this stuff should probably be move elsewhere eventually,
|
||||
such as command-line handling and the main loop. main() is supposed
|
||||
to be "dumb".
|
||||
|
||||
*/
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <signal.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include "../shared/debug.h"
|
||||
|
||||
#include "drivers/lcd.h"
|
||||
#include "sock.h"
|
||||
#include "clients.h"
|
||||
#include "screenlist.h"
|
||||
#include "screen.h"
|
||||
#include "parse.h"
|
||||
#include "render.h"
|
||||
#include "serverscreens.h"
|
||||
#include "input.h"
|
||||
#include "main.h"
|
||||
|
||||
|
||||
char *version = VERSION;
|
||||
char *build_date = __DATE__;
|
||||
|
||||
|
||||
/* no longer needed
|
||||
static screen_size sizes[] =
|
||||
{
|
||||
{"16x2", 16, 2},
|
||||
{"16x4", 16, 4},
|
||||
{"20x2", 20, 2},
|
||||
{"20x4", 20, 4},
|
||||
{"40x2", 40, 2},
|
||||
{"40x4", 40, 4},
|
||||
{NULL , 0, 0},
|
||||
};
|
||||
*/
|
||||
|
||||
// This is currently only a list of available arguments, but doesn't
|
||||
// really *do* anything. It just helps to figure out which parameters
|
||||
// go to the server, and which ones go to individual drivers...
|
||||
static parameter args[] =
|
||||
{
|
||||
{"-h", "--help"},
|
||||
{"-d", "--driver"},
|
||||
{"-t", "--type"},
|
||||
{"-f", "--foreground"},
|
||||
{"-b", "--backlight"},
|
||||
{NULL, NULL},
|
||||
};
|
||||
|
||||
|
||||
void exit_program(int val);
|
||||
void HelpScreen();
|
||||
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
// TODO: Use a config file!
|
||||
//char cfgfile[256] = "/etc/LCDd.cf";
|
||||
int i, err, tmp;
|
||||
int daemon_mode=1;
|
||||
int disable_server_screen=0;
|
||||
int child;
|
||||
screen *s = NULL;
|
||||
char *str, *ing; // strings for commandline handling
|
||||
// screen_size *size = &sizes[0]; // No longer needed
|
||||
|
||||
|
||||
|
||||
// Ctrl-C will cause a clean exit...
|
||||
signal(SIGINT, exit_program);
|
||||
// and "kill"...
|
||||
signal(SIGTERM, exit_program);
|
||||
// and "kill -HUP" (hangup)...
|
||||
signal(SIGHUP, exit_program);
|
||||
// and just in case, "kill -KILL" (which cannot be trapped; but oh well)
|
||||
signal(SIGKILL, exit_program);
|
||||
|
||||
|
||||
|
||||
// If no paramaters given, give the help screen.
|
||||
if(argc == 1) HelpScreen();
|
||||
|
||||
// Don't spawn a child if we're using the curses driver
|
||||
for(i=1; i<argc; i++)
|
||||
{
|
||||
if(0 == strcmp(argv[i], "-f") ||
|
||||
0 == strcmp(argv[i], "--foreground") ||
|
||||
0 == strcmp(argv[i], "curses"))
|
||||
daemon_mode = 0;
|
||||
}
|
||||
|
||||
// Now, go into daemon mode...
|
||||
#ifndef DEBUG
|
||||
if(daemon_mode)
|
||||
{
|
||||
if ((child = fork()) != 0)
|
||||
{
|
||||
usleep(1500000); // Wait for child to initialize
|
||||
exit(0); /* PARENT EXITS */
|
||||
}
|
||||
// This line removed because it eats error messages...
|
||||
//setsid(); /* RELEASE TTY */
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
// Set up lcd driver base system
|
||||
lcd_init("");
|
||||
|
||||
|
||||
// Parse the command line now...
|
||||
// TODO: Move this to a separate function?
|
||||
for(i=1; i<argc; i++)
|
||||
{
|
||||
if(0 == strcmp(argv[i], "-d") ||
|
||||
0 == strcmp(argv[i], "--driver"))
|
||||
{
|
||||
if(argc <= i+1) HelpScreen();
|
||||
str = argv[++i];
|
||||
ing = NULL;
|
||||
|
||||
// Check to see if the next parameter is intended for LCDd,
|
||||
// or if it should be passed to the driver...
|
||||
if(argc > i+1)
|
||||
{
|
||||
int j, skip=0;
|
||||
for(j=1; args[j].lg; j++) // check each option except "help"
|
||||
if(! strcmp(argv[i+1], args[j].sh) ||
|
||||
! strcmp(argv[i+1], args[j].lg)) skip=1;
|
||||
|
||||
if(! skip)
|
||||
{
|
||||
ing = argv[++i];
|
||||
}
|
||||
//else i++;
|
||||
}
|
||||
err = lcd_add_driver(str, ing);
|
||||
if(err <= 0)
|
||||
{
|
||||
printf("Error loading driver %s. Continuing anyway...\n",
|
||||
str);
|
||||
}
|
||||
if((err > 0) && (0 == strcmp(str, "curses"))) daemon_mode=0;
|
||||
}
|
||||
else if(0 == strcmp(argv[i], "-h") ||
|
||||
0 == strcmp(argv[i], "--help"))
|
||||
{
|
||||
HelpScreen();
|
||||
}
|
||||
// Redundant, but it prevents errors...
|
||||
else if(0 == strcmp(argv[i], "-f") ||
|
||||
0 == strcmp(argv[i], "--foreground"))
|
||||
{
|
||||
daemon_mode = 0;
|
||||
}
|
||||
else if(0 == strcmp(argv[i], "-b") ||
|
||||
0 == strcmp(argv[i], "--backlight"))
|
||||
{
|
||||
if(argc <= i+1) HelpScreen();
|
||||
str = argv[++i];
|
||||
if(0 == strcmp(str, "off"))
|
||||
backlight_state = backlight = BACKLIGHT_OFF;
|
||||
else if(0 == strcmp(str, "on"))
|
||||
backlight_state = backlight = BACKLIGHT_ON;
|
||||
else if(0 == strcmp(str, "open"))
|
||||
backlight = BACKLIGHT_OPEN;
|
||||
else HelpScreen();
|
||||
}
|
||||
else if(0 == strcmp(argv[i], "-t") ||
|
||||
0 == strcmp(argv[i], "--type"))
|
||||
{
|
||||
if(i + 1 > argc)
|
||||
HelpScreen();
|
||||
else
|
||||
{
|
||||
int wid, hgt;
|
||||
|
||||
i++;
|
||||
sscanf(argv[i], "%ix%i", &wid, &hgt);
|
||||
if(wid>80 || wid<16 || hgt>25 || hgt<2)
|
||||
{
|
||||
fprintf(stderr,
|
||||
"LCDd: Invalid lcd size \"%s\". Using 20x4.\n",
|
||||
argv[i]);
|
||||
lcd.wid = 20;
|
||||
lcd.hgt = 4;
|
||||
}
|
||||
else
|
||||
{
|
||||
lcd.wid = wid;
|
||||
lcd.hgt = hgt;
|
||||
}
|
||||
|
||||
/* no longer needed
|
||||
int j=0, valid=0;
|
||||
i++;
|
||||
for(j=0; sizes[j].size; j++)
|
||||
{
|
||||
if(0 == strcmp(sizes[j].size, argv[i]))
|
||||
{
|
||||
valid = 1;
|
||||
size = &sizes[j];
|
||||
lcd.wid = size->wid;
|
||||
lcd.hgt = size->hgt;
|
||||
}
|
||||
}
|
||||
if(!valid)
|
||||
{
|
||||
fprintf(stderr, "LCDd: Invalid lcd size \"%s\". Using 20x4.\n", argv[i]);
|
||||
}
|
||||
*/
|
||||
}
|
||||
}
|
||||
else if(0 == strcmp(argv[i], "-i") ||
|
||||
0 == strcmp(argv[i], "--serverinfo"))
|
||||
{
|
||||
if(i + 1 > argc)
|
||||
HelpScreen();
|
||||
else
|
||||
{
|
||||
i++;
|
||||
if(0 == strcmp(argv[i], "off")) disable_server_screen = 1;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// otherwise... Get help!
|
||||
printf("Invalid parameter: %s\n", argv[i]);
|
||||
HelpScreen();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
// Now init a bunch of required stuff...
|
||||
|
||||
if(sock_create_server() <= 0)
|
||||
{
|
||||
printf("Error opening socket.\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
if(client_init() < 0)
|
||||
{
|
||||
printf("Error initializing client list\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
if(screenlist_init() < 0)
|
||||
{
|
||||
printf("Error initializing screen list\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Make sure the server screen shows up every once in a while..
|
||||
if(server_screen_init() < 0)
|
||||
{
|
||||
printf("Error initializing server screens\n");
|
||||
return 1;
|
||||
}
|
||||
else if(disable_server_screen)
|
||||
{
|
||||
server_screen->priority = 256;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
// Main loop...
|
||||
while(1)
|
||||
{
|
||||
sock_poll_clients();
|
||||
parse_all_client_messages();
|
||||
handle_input();
|
||||
|
||||
// TODO: Move this code to screenlist.c...
|
||||
// ... it should just say "handle_screens();"
|
||||
// Timer gets reset by screenlist_next()
|
||||
timer++;
|
||||
// this line's here because s was getting overwritten at one time...
|
||||
//s = screenlist_current();
|
||||
if(s && (timer >= s->duration))
|
||||
{
|
||||
screenlist_next();
|
||||
}
|
||||
// Just in case it gets out of hand...
|
||||
if(timer >= 0x10000) timer = 0;
|
||||
update_server_screen(timer);
|
||||
s = screenlist_current();
|
||||
|
||||
// render something here...
|
||||
if(s) draw_screen(s, timer);
|
||||
else no_screen_screen(timer);
|
||||
|
||||
usleep(TIME_UNIT);
|
||||
}
|
||||
|
||||
|
||||
// Quit!
|
||||
exit_program(0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
void exit_program(int val)
|
||||
{
|
||||
// TODO: These things shouldn't be so interdependent. The order
|
||||
// things are shut down in shouldn't matter...
|
||||
|
||||
// Say goodbye!
|
||||
goodbye_screen();
|
||||
// Can go anywhere...
|
||||
lcd_shutdown();
|
||||
|
||||
// Must come before screenlist_shutdown
|
||||
client_shutdown();
|
||||
// Must come after client_shutdown
|
||||
screenlist_shutdown();
|
||||
// Should come after client_shutdown
|
||||
sock_close_all();
|
||||
|
||||
exit(0);
|
||||
|
||||
}
|
||||
|
||||
|
||||
void HelpScreen()
|
||||
{
|
||||
printf("LCDproc server daemon, %s\n", version);
|
||||
printf("Copyright (c) 1999 Scott Scriven, William Ferrell, and misc contributors\n");
|
||||
printf("This program is freely redistributable under the terms of the GNU Public License\n\n");
|
||||
printf("Usage: lcdproc [options]\n");
|
||||
printf("\tOptions in []'s are optional. Available options are:\n");
|
||||
printf("\t-h\t--help\n\t\t\tDisplay this help screen\n");
|
||||
printf("\t-t\t--type <size>\n\t\t\tSelect an LCD size (20x4, 16x2, etc...)\n");
|
||||
printf("\t-d\t--driver <driver> [args]\n\t\t\tAdd a driver to use:\n");
|
||||
printf("\t\t\tCFontz, curses, HD44780, irmanin, joy,\n\t\t\tMtxOrb, text\n");
|
||||
printf("\t\t\t(args will be passed to the driver for init)\n");
|
||||
printf("\t-f\t--foreground\n\t\t\tRun in the foreground (no daemon)\n");
|
||||
printf("\t-b\t--backlight <mode>\n\t\t\tSet backlight mode (on, off, open)\n");
|
||||
printf("\t-i\t--serverinfo off\n\t\t\tSet the server screen to low priority\n");
|
||||
printf("\n");
|
||||
printf("\tUse \"man LCDd\" for more info.\n");
|
||||
printf("\tHelp on each driver's parameters are obtained upon request:\n\t\t\"LCDd -d driver --help\"\n");
|
||||
printf("Example:\n");
|
||||
printf("\tLCDd -d MtxOrb \"--device /dev/lcd --contrast 200\" -d joy\n");
|
||||
printf("\n");
|
||||
exit(0);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user