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/*
* 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, either version 3 of the License, or
*(at your option) any later version.
*
* 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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <X11/Xlib.h>
#include <X11/extensions/scrnsaver.h>
/*
* start - the time to start preventing the screen from sleeping
* end - the time to stop preventing the screen from sleeping
* must be in "xx:xx" format
*/
char *start = "08:00";
char *end = "00:00";
void
gettime(int *store)
{
time_t t = time(NULL);
struct tm *tm = localtime(&t);
store[0] = tm->tm_hour;
store[1] = tm->tm_min;
}
void
gettriggertimes(int *startarr, int *endarr)
{
char smodify[6];
char emodify[6];
strncpy(smodify, start, 6);
strncpy(emodify, end, 6);
startarr[0] = atoi(strtok(smodify, ":"));
startarr[1] = atoi(strtok(NULL, ":"));
endarr[0] = atoi(strtok(emodify, ":"));
endarr[1] = atoi(strtok(NULL, ":"));
}
int
main(int argc, char *argv[])
{
int time[2];
int startarr[2];
int endarr[2];
int setwontsleep = 0;
gettriggertimes(startarr, endarr);
Display *dsp = XOpenDisplay(NULL);
if(!dsp)
{
fprintf(stderr, "cannot open X display\n");
exit(EXIT_FAILURE);
}
if (argc > 1)
{
if (strcmp(argv[1], "reset") == 0)
{
puts("enabling screensaver and exiting");
XScreenSaverSuspend(dsp, False);
XFlush(dsp);
XCloseDisplay(dsp);
return 0;
}
else
{
printf("usage: %s [reset]\nreset: re-enable screensaver\n", argv[0]);
return 0;
}
}
while (1)
{
gettime(time);
if (setwontsleep == 0 && (startarr[0] == time[0]) && (startarr[1] == time[1]))
{
XScreenSaverSuspend(dsp, True);
XFlush(dsp);
setwontsleep = 1;
}
else if (setwontsleep == 1 && endarr[0] == time[0] && endarr[1] == time[1])
{
XScreenSaverSuspend(dsp, False);
XFlush(dsp);
setwontsleep = 0;
}
sleep(5);
}
XCloseDisplay(dsp);
return 0;
}
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