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#include <ctype.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
/* A very simple keygrabber. */
struct termios tp;
void reset_term(int x) {
tcsetattr(0,TCSANOW,&tp);
exit(x);
}
int main(int argc, char **argv) {
char foo[2];
char *list = NULL;
int alarmlen=0;
int tp_if,tp_of,tp_lf;
int x;
if (argc>1) {
if (argv[1][0]=='-' && isdigit(argv[1][1])) {
alarmlen = atoi(argv[1]+1);
list = argv[2];
} else {
list = argv[1];
}
for (x=0;list[x];x++) list[x]=toupper(list[x]);
}
foo[0]=foo[1]='\0';
signal(SIGTERM,reset_term);
alarm(alarmlen);
signal(SIGALRM,reset_term);
tcgetattr(0,&tp);
tp_if=tp.c_iflag;
tp_of=tp.c_oflag;
tp_lf=tp.c_lflag;
tp.c_iflag=0;
tp.c_oflag &= ~OPOST;
tp.c_lflag &= ~(ISIG | ICANON);
tcsetattr(0,TCSANOW,&tp);
tp.c_iflag=tp_if;
tp.c_oflag=tp_of;
tp.c_lflag=tp_lf;
while (1) {
read(0,foo,1);
foo[0]=toupper(foo[0]);
/* Die if we get a control-c or control-d */
if (foo[0]==3 || foo[0]==4) reset_term(1);
if ((!list) || strstr(list,foo)) {
reset_term(0);
}
}
}
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