mangavalk/lcdproc
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Updated server main():

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* Uses getopt(3) -- getopt_long(3) appears to be a GNU extension
  (not used)
* Supports the use of a configuration file!  Defaults to /etc/LCDd.conf
This commit is contained in:
ddouthitt
2001-09-26 20:05:07 +00:00
parent fda1f15520
commit 5ec2511d52
1 changed files with 232 additions and 34 deletions
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server/main.c
+232 -34
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@@ -20,8 +20,13 @@
#include <unistd.h>
#include <pwd.h>
#include <errno.h>
#include <sys/types.h>
#include <syslog.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
extern char *optarg;
extern int optind, optopt, opterr;
#include "shared/debug.h"
@@ -38,7 +43,8 @@
#define MAX_TIMER 0x10000
#define DEFAULT_USER "nobody"
#define CONFIG_FILE "/etc/LCDd.conf"
#define DEFAULT_CONFIG_FILE "/etc/LCDd.conf"
#define DEFAULT_DRIVER "curses"
int debug_level = 3;
char *version = VERSION;
@@ -108,17 +114,25 @@ int drop_privs(char *user) {
return 0;
}
#define MAX_DRIVERS 12
#define MAX_DRIVER_NAME_SIZE 64
int
main (int argc, char **argv)
{
// TODO: Use a config file!
char cfgfile[256] = CONFIG_FILE;
char cfgfile[256] = DEFAULT_CONFIG_FILE;
FILE *config;
int i, err;
int daemon_mode = 1;
int disable_server_screen = 1;
screen *s = NULL;
char *str, *ing; // strings for commandline handling
char *user = DEFAULT_USER;
char c, buf[64], *driverlist[MAX_DRIVERS], *driverargs[MAX_DRIVERS];
char linebuf[128], driver_name[64];
int driver_index;
//char *nullargs[64];
signal (SIGINT, exit_program); // Ctrl-C will cause a clean exit...
signal (SIGTERM, exit_program); // and "kill"...
@@ -126,23 +140,187 @@ main (int argc, char **argv)
signal (SIGKILL, exit_program); // and just in case, "kill -KILL" (which cannot be trapped; but oh well)
// If no paramaters given, give the help screen.
if (argc == 1)
HelpScreen ();
//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;
memset(driverlist, '\0', sizeof(driverlist));
i = 0;
// analyze options here..
while ((c = getopt(argc, argv, "d:hfiw:c:")) > 0) {
switch(c) {
case 'd':
// Add to a list of drivers to be initialized later...
if (i < MAX_DRIVERS) {
driverlist[i] = malloc(MAX_DRIVER_NAME_SIZE);
strncpy(driverlist[i], optarg, MAX_DRIVER_NAME_SIZE);
i++;
} else
fprintf(stderr, "too many drivers!");
break;
case 'h':
HelpScreen ();
break;
case 'f':
daemon_mode = 0;
break;
case 'c':
strncmp(cfgfile, optarg, sizeof(cfgfile));
break;
case 'i':
disable_server_screen = 1;
break;
case 'w':
default_duration = atoi(optarg);
if ( default_duration < 16 || default_duration > 10000 ) {
snprintf(buf, sizeof(buf),
"wait time should be between 16 and 10000 (in 1/8ths of second), not %s\n", optarg);
fprintf(stderr, "%s", buf);
HelpScreen ();
};
break;
case '?':
fprintf(stderr, "unknown option: '%c'\n", optopt);
HelpScreen();
break;
case ':':
fprintf(stderr, "missing option argument!");
HelpScreen();
break;
}
}
if (optind < argc)
fprintf(stderr, "non-option arguments!! BAD...");
// Default driver: curses
if (driverlist[0] == NULL) {
driverlist[0] = malloc(MAX_DRIVER_NAME_SIZE);
strcpy(driverlist[0], DEFAULT_DRIVER);
}
// Now, go into daemon mode...
#ifndef DEBUG
openlog("LCDd", LOG_PID, LOG_DAEMON);
syslog(LOG_NOTICE, "server version %s starting up (protocol version %s)",
version, protocol_version);
syslog(LOG_NOTICE, "server built on %s",
build_date);
if ((config = fopen(cfgfile, "r")) == NULL) {
syslog(LOG_WARNING, "no configuration file found... using defaults");
} else {
driver_index = -1;
memset(linebuf, '\0', sizeof(linebuf));
while (fgets(linebuf, sizeof(linebuf), config)) {
if (linebuf[strlen(linebuf) - 1] == '\n')
linebuf[strlen(linebuf) - 1] = '\0';
/*
* Comment lines and empty lines...
*
*/
if (linebuf[0] == '\0' || // empty line
linebuf[0] == '\n' || // empty line
linebuf[0] == '\r' || // empty line
linebuf[0] == '#' || // comment line (#)
linebuf[0] == ';' || // comment line (;)
(linebuf[0] == '/' && linebuf[1] == '/')) // comment line (//)
continue;
/*
* Driver section lines...
*
*/
else if (linebuf[0] == '[' && linebuf[strlen(linebuf) - 1] == ']') {
driver_index = -1;
linebuf[strlen(linebuf) - 1] = '\0';
strncpy(driver_name, linebuf + 1, sizeof(driver_name));
for (i = 0; i < MAX_DRIVERS; i++) {
if (driverlist[i] == NULL)
break;
if (strcasecmp(driver_name, driverlist[i]) == 0) {
driver_index = i;
break;
}
}
/*
* Driver section data lines
*
* These are only scanned for drivers that are being used...
*
*/
} else if (driver_index >= 0) {
if (strncasecmp(linebuf, "arguments ", 10) == 0) {
if ((driverargs[driver_index] = malloc(strlen(linebuf))) == NULL) {
fprintf(stderr, "could not allocate memory for driver arguments!");
exit(1);
} else {
;
// Strip out string quotes
//char *p;
//p = linebuf + 10;
//if (*p == '\"') {
// char *q;
// p++;
// q = p;
// while ((*q) || (*q != '\"'))
// q++;
// if (! (*q)) {
// fprintf(stderr, "unterminated string!");
// exit (1);
// } else {
// q == '\0';
// }
//}
strncpy(driverargs[driver_index], linebuf + 9, strlen(linebuf));
}
} else {
fprintf(stderr, "unknown command line: %s\n", linebuf);
exit(1);
}
}
}
fclose(config);
}
for (i = 0; i < MAX_DRIVERS; i++) {
if (driverlist[i] == NULL)
continue;
if ((err = lcd_add_driver (driverlist[i], driverargs[i])) > 0) {
// if we are to run as a background daemon,
// make this fact dependent on the output driver's
// sayso - if the output driver desires, do NOT daemonize...
if (daemon_mode == 1)
daemon_mode = lcd.daemonize;
} else {
if (i == 0) {
snprintf(buf, sizeof(buf), "error loading output driver %s...\n", optarg);
fprintf(stderr, buf);
exit(1);
} else {
snprintf(buf, sizeof(buf), "error loading input driver %s... continuing\n", optarg);
fprintf(stderr, buf);
}
}
}
#ifndef DEBUG
// Now, go into daemon mode...
if (daemon_mode) {
int child;
@@ -166,10 +344,12 @@ main (int argc, char **argv)
#endif
// Set up lcd driver base system
lcd_init ("");
//lcd_init ("");
#ifdef IGNORE_THIS
// Parse the command line now...
// TODO: Move this to a separate function?
//
for (i = 1; i < argc; i++) {
if (argv[i][0] == '-') {
@@ -334,6 +514,7 @@ main (int argc, char **argv)
HelpScreen ();
}
}
#endif
// switch to a different user for the real work...
if (lcd_port >= 1024) // unpriviledged port
@@ -372,6 +553,9 @@ main (int argc, char **argv)
syslog(LOG_NOTICE, "using %dx%d LCD with cells %dx%d",
lcd.wid, lcd.hgt, lcd.cellwid, lcd.cellhgt);
if (debug_level > 2)
syslog(LOG_DEBUG, "framebuffer at %0X",
lcd.framebuf);
while (1) {
sock_poll_clients (); // poll clients for input
@@ -438,13 +622,16 @@ exit_program (int val)
}
syslog(LOG_NOTICE, buf); // send message to syslog
goodbye_screen (); // display goodbye screen on LCD display
lcd_shutdown (); // release driver memory and file descriptors
client_shutdown (); // shutdown clients (must come first)
if (lcd.framebuf != NULL) {
goodbye_screen (); // display goodbye screen on LCD display
lcd_shutdown (); // release driver memory and file descriptors
screenlist_shutdown (); // shutdown screens (must come after client_shutdown)
sock_close_all (); // close all open sockets (must come after client_shutdown)
client_shutdown (); // shutdown clients (must come first)
screenlist_shutdown (); // shutdown screens (must come after client_shutdown)
sock_close_all (); // close all open sockets (must come after client_shutdown)
}
exit (0);
}
@@ -452,24 +639,35 @@ exit_program (int val)
void
HelpScreen ()
{
printf ("LCDproc server daemon, %s\n", version);
// This cleans up any messes on the display output if needed...
if (lcd.framebuf != NULL)
lcd.close();
printf ("\nLCDproc 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: LCDd [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, LB216, 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 ("Usage: LCDd [ -hfiw ] [ -c <config> ] [ -d <driver> ]\n\n");
printf ("Available options are:\n\n");
printf ("\t-h\t\tDisplay this help screen\n");
printf ("\t-c <config>\tUse a configuration file other than %s\n", DEFAULT_CONFIG_FILE);
//printf ("\t-t\t\tSelect an LCD size (20x4, 16x2, etc...)\n");
printf ("\t-d <driver>\tAdd a driver to use (output only to first)\n");
//printf ("\t\t\tCFontz, curses, HD44780, irmanin, joy,\n\t\t\tMtxOrb, LB216, text\n");
//printf ("\t\t\t(args will be passed to the driver for init)\n");
printf ("\t-f\t\tRun in the foreground\n");
//printf ("\t-b\t--backlight <mode>\n\t\t\tSet backlight mode (on, off, open)\n");
printf ("\t-i\t\tDisable showing of the main LCDproc server screen\n");
printf ("\t-w <waittime>\tTime to pause at each screen (in 1/8s of a second)\n");
printf ("\nCurrently available drivers:\n\n");
lcd_list_drivers();
printf ("\nUse \"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);
}