Initial revision
This commit is contained in:
William Ferrell
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/time.h>
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#include <termios.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <ctype.h>
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#include "main.h"
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#include "lcd.h"
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#include "mode.h"
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//#include "lock.h"
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#include "sockets.h"
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// TODO: Commenting... Everything!
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char version[] = "v0.3.4";
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char build_date[] = "1998-06-20";
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int Quit = 0;
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/*
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Mode List:
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See below... (default_sequence[])
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*/
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typedef struct mode {
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char which;
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int num_times;
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int delay_time;
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} mode;
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void HelpScreen();
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void exit_program(int val);
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void main_loop(mode *sequence);
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#define MAX_SEQUENCE 256
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// 1/8th second is a single time unit...
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#define TIME_UNIT 125000
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// Contains a list of modes to run
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mode default_sequence[] =
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{
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{ 'C', 32, 1, },// [C]PU
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{ 'M', 8, 4, },// [M]emory
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{ 'X', 1, 32, },// [X]-load (load histogram)
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{ 'T', 8, 4, },// [T]ime/Date
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{ 'D', 32, 1, },// [D]isk stats
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{ 'A', 1, 16, },// [A]bout (credits)
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{ 1 , 0, 0, },// Modes after this line will not be run by default...
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// ... all non-default modes must be in here!
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// ... they will not show up otherwise.
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{ 'O', 8, 4, },// [O]ld Timescreen
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{ 'U', 8, 4, },// Old [U]ptime Screen
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{ 'B', 32, 1, },// [B]attery Status
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{ 'G', 32, 1, },// Cpu histogram [G]raph
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{ 0, 0, 0, },// No more.. all done.
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};
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// TODO: Clean up main()... It is still way too big.
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// TODO: Socket language, client handling...
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// TODO: Config file; not just command line
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int main(int argc, char **argv)
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{
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char device[256] = "/dev/lcd";
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char cfgfile[256] = "/etc/lcdproc.cf";
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mode sequence[MAX_SEQUENCE];
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char driver[256] = "MtxOrb";
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int i, j, k;
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int already_running = 0;
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int contrast = 140;
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int tmp;
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memset(sequence, 0, sizeof(mode) * MAX_SEQUENCE);
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// Ctrl-C will cause a clean exit...
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signal(SIGINT, exit_program);
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// and "kill"...
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signal(SIGTERM, exit_program);
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// and "kill -HUP" (hangup)...
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signal(SIGHUP, exit_program);
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// and just in case, "kill -KILL" (which cannot be trapped; but oh well)
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signal(SIGKILL, exit_program);
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// Check to see if we are already running...
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// already_running = CheckForLock();
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already_running = PingLCDport();
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if(already_running < 0)
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{
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printf("Error checking for another LCDproc.\n");
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return -1;
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}
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// Communicate with the previously running LCDproc
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if(already_running > 0)
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{
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// "already_running" holds the pid of the LCDproc we want to talk to...
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// Do the command line ("lcd pet status", or "lcd contrast 50")
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// And stuff...
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// ...Then exit
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printf("Detected another LCDproc. (%i) Exiting...\n", already_running);
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// Remove me ^^^^
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return 0;
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}
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tmp = StartSocketServer();
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if (tmp <= 0)
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{
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printf("Error starting socket server.\n");
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return 0;
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}
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// Command line
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memcpy(sequence, default_sequence, sizeof(default_sequence));
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for(i=1, j=0; i<argc; i++)
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{
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if(argv[i][0] == '-') switch(argv[i][1])
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{
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// "C is for cookie (erm, contrast), and that is good enough for me..."
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case 'C':
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case 'c': if(argc < i+1) HelpScreen();
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contrast = atoi(argv[++i]);
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if(contrast <= 0) HelpScreen();
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break;
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// D for Device...
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case 'D':
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case 'd': if(argc < i+1) HelpScreen();
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strcpy(device, argv[++i]);
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break;
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case 'L':
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case 'l': if(argc < i+1) HelpScreen();
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strcpy(driver, argv[++i]);
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break;
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// otherwise... Get help!
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default: HelpScreen(); break;
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}
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// Parse command line here... read the man page.
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else if(strlen(argv[i]) == 1)
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{
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// Grab the mode letter...
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sequence[j].which = argv[i][0];
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// If we have just a letter with no numbers...
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// Set the defaults...
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for(tmp=0, k=0; default_sequence[k].which; k++)
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{
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if(toupper(sequence[j].which) == default_sequence[k].which)
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{
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memcpy(&sequence[j], &default_sequence[k], sizeof(mode));
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tmp=1;
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break;
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}
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}
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if(!tmp) { printf("Invalid Mode: %c\n", argv[i][0]); exit(0); }
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j++;
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// Set the last element to 0...
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memset(sequence + j, 0, sizeof(mode));
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} // End if(strlen(argv == 1))
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else
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{
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// A multicharacter parameter by itself is assumed to be a config file..
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strcpy(cfgfile, argv[i]);
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printf("Ignoring config file: %s\n", cfgfile);
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}
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}
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// Init the com port
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if(lcd_init(device, driver) < 1)
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{
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printf("Cannot initialize %s.\n", device);
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exit(1);
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}
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mode_init();
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lcd.contrast(contrast);
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main_loop(sequence);
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// Clean up
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exit_program(0);
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return 0;
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}
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void HelpScreen()
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{
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printf("LCDproc, %s\n", version);
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printf("Usage: lcdproc [-d device] [-c contrast] [modelist]\n");
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printf("\tOptions in []'s are optional.\n");
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printf("\t-l driver is the output driver to use:\n");
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printf("\t\tMtxOrb, curses, text, debug\n");
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printf("\t-d device is what the lcd display is hooked to. (/dev/cua0?)\n");
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printf("\t-c contrast sets the screen contrast (0 - 255)\n");
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printf("\tmodelist is \"mode [mode mode ...]\"\n");
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printf("\tMode letters: [C]pu [G]raph [T]ime [M]emory [X]load [D]isk [B]attery [O]ld Time screen [U]ptime [A]bout\n");
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printf("\n");
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printf("\tUse \"man lcdproc\" for more info.\n");
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printf("Example:\n");
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printf("\tlcdproc -d /dev/cua1 C M X -l MtxOrb\n");
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printf("\n");
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exit(0);
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}
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///////////////////////////////////////////////////////////////////
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// Called upon TERM and INTR signals...
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//
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void exit_program(int val)
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{
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Quit = 1;
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//unlock(); // Not needed any more...
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CloseAllConnections();
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goodbye_screen(0);
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lcd.flush();
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lcd.backlight(1);
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lcd.close();
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mode_close();
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exit(0);
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}
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///////////////////////////////////////////////////////////////////
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// Main program loop...
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//
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void main_loop(mode *sequence)
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{
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int i, j, k;
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int Quit=0;
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int status=0;
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int timer=0;
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int blink=0;
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int hold=0;
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int heartbeat=1;
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// Main loop
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// Run whatever screen we want, then wait. Woo-hoo!
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for(i=0; !Quit; )
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{
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timer=0;
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for(j=0; hold || (j<sequence[i].num_times && !Quit); j++)
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{
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switch(sequence[i].which)
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{
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case 'g':
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case 'G': status = cpu_graph_screen(j); break;
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case 'c':
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case 'C': status = cpu_screen(j); break;
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case 'o':
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case 'O': status = clock_screen(j); break;
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case 'm':
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case 'M': status = mem_screen(j); break;
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case 'u':
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case 'U': status = uptime_screen(j); break;
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case 't':
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case 'T': status = time_screen(j); break;
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case 'd':
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case 'D': status = disk_screen(j); break;
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case 'x':
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case 'X': status = xload_screen(j); break;
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case 'b':
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case 'B': status = battery_screen(j); break;
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case 'a':
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case 'A': status = credit_screen(j); break;
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default: status = dumbass_screen(j); break;
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}
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for(k=0; k<sequence[i].delay_time; k++)
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{
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usleep(TIME_UNIT); timer++;
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// Modify lcd status here... (blinking, for example)
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switch(status)
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{
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case BLINK_ON : blink=1; break;
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case BLINK_OFF: blink=0; lcd.backlight(1); break;
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case BACKLIGHT_OFF: blink=0; lcd.backlight(0); break;
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case BACKLIGHT_ON : blink=0; lcd.backlight(1); break;
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case HOLD_SCREEN : hold=1; break;
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case CONTINUE : hold=0; break;
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}
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status=0;
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if(blink) lcd.backlight(! ((timer&15) == 15));
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if(heartbeat)
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{
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// Set this to pulsate like a real heart beat...
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// (binary is fun... :)
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lcd.icon(!((timer+4)&5), 0);
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lcd.chr(lcd.wid, 1, 0);
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}
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lcd.flush();
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PollSockets();
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}
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}
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i++;
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if(sequence[i].which < 2) i=0;
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}
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}
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