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Added daemon mode, a help and version. Added a README.

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This commit is contained in:
Johannes Findeisen 2025-01-14 04:22:55 +01:00
commit 65b7a0e28d
3 changed files with 149 additions and 49 deletions
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154
Xtea.c
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@ -1,40 +1,83 @@
/**
* Xtimer is a program that executes a given command or program after a given
* Xtea is a program that executes a given command or program after a given
* time if no X11 keybord or mouse input happend in the given time.
*
* Author: Johannes Findeisen <you@hanez.org> - 2025
* License: Apache-2.0 (see LICENSE)
*/
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/wait.h>
#include <time.h>
#include <limits.h> // For INT_MAX and INT_MIN
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/extensions/XInput2.h>
#include <X11/Xlib.h>
#define VERSION "0.1.0"
void print_help(const char *program_name)
{
printf("Usage: %s [-d] [-v] [-h] <seconds> <program> [arguments...]\n", program_name);
printf("\n");
printf("Options:\n");
printf(" -d Run in daemon mode. Restart the program after inactivity.\n");
printf(" -v Show the program version and exit.\n");
printf(" -h Show this help message and exit.\n");
printf("\n");
printf("Arguments:\n");
printf(" <seconds> Time (in seconds) to wait after inactivity before running the program.\n");
printf(" <program> Program to execute after the specified delay.\n");
printf(" [arguments...] Optional arguments to pass to the program.\n");
printf("\n");
printf("Examples:\n");
printf(" %s 5 ls -ls Execute 'ls -l' after 5 seconds of inactivity.\n", program_name);
printf(" %s -d 10 echo 'Hello' Run 'echo Hello' in daemon mode after 10 seconds of inactivity.\n", program_name);
}
int main(int argc, char *argv[])
{
if (argc < 3) {
fprintf(stderr, "Usage: %s <seconds> <program> [arguments...]\n",
argv[0]);
if (argc < 2) {
print_help(argv[0]);
return EXIT_FAILURE;
}
// Check for version or help flags
if (strcmp(argv[1], "-v") == 0) {
printf("%s: %s\n", argv[0], VERSION);
return EXIT_SUCCESS;
}
if (strcmp(argv[1], "-h") == 0) {
print_help(argv[0]);
return EXIT_SUCCESS;
}
// Check for daemon mode
int daemon_mode = 0;
int arg_offset = 1;
if (strcmp(argv[1], "-d") == 0) {
daemon_mode = 1;
arg_offset = 2; // Adjust argument offset for parsing other parameters
}
if (argc < arg_offset + 2) {
print_help(argv[0]);
return EXIT_FAILURE;
}
// Validate the first parameter (wait time)
char *endptr;
long wait_time = strtol(argv[1], &endptr, 10);
// Check for valid integer input
long wait_time = strtol(argv[arg_offset], &endptr, 10);
if (*endptr != '\0' || wait_time <= 0 || wait_time > INT_MAX) {
fprintf(stderr,
"Error: First argument must be a positive integer within the range 1 to %d.\n",
INT_MAX);
fprintf(stderr, "Error: First argument must be a positive integer within the range 1 to %d.\n", INT_MAX);
return EXIT_FAILURE;
}
// Safely cast the wait_time to an int (it's safe after the above check)
// Safely cast the wait_time to an int
int wait_time_seconds = (int)wait_time;
// Initialize X11 display
@ -47,8 +90,7 @@ INT_MAX);
// Check for XInput2 support
int opcode, event, error;
if (!XQueryExtension(display, "XInputExtension", &opcode, &event, &error)) {
fprintf(stderr,
"Error: X Input Extension is not supported on this display.\n");
fprintf(stderr, "Error: X Input Extension is not supported on this display.\n");
XCloseDisplay(display);
return EXIT_FAILURE;
}
@ -73,49 +115,61 @@ INT_MAX);
return EXIT_FAILURE;
}
// Timer logic with input monitoring
time_t start_time, current_time;
start_time = time(NULL);
do {
// Timer logic with input monitoring
time_t start_time, current_time;
start_time = time(NULL);
while (1) {
current_time = time(NULL);
while (1) {
current_time = time(NULL);
// Check if the timer has expired
if (current_time - start_time >= wait_time_seconds) {
break;
}
// Check for input events
while (XPending(display) > 0) {
XEvent event;
XNextEvent(display, &event);
if (event.xcookie.type == GenericEvent &&
event.xcookie.extension == opcode && // Use the opcode obtained earlier
XGetEventData(display, &event.xcookie)) {
XIDeviceEvent *xi_event = (XIDeviceEvent *)event.xcookie.data;
if (xi_event->evtype == XI_KeyPress ||
xi_event->evtype == XI_ButtonPress ||
xi_event->evtype == XI_Motion) {
// Reset the timer on input or mouse movement
start_time = time(NULL);
}
XFreeEventData(display, &event.xcookie);
// Check if the timer has expired
if (current_time - start_time >= wait_time_seconds) {
break;
}
// Check for input events
while (XPending(display) > 0) {
XEvent event;
XNextEvent(display, &event);
if (event.xcookie.type == GenericEvent &&
event.xcookie.extension == opcode &&
XGetEventData(display, &event.xcookie)) {
XIDeviceEvent *xi_event = (XIDeviceEvent *)event.xcookie.data;
if (xi_event->evtype == XI_KeyPress ||
xi_event->evtype == XI_ButtonPress ||
xi_event->evtype == XI_Motion) {
// Reset the timer on input or mouse movement
start_time = time(NULL);
}
XFreeEventData(display, &event.xcookie);
}
}
// Sleep briefly to reduce CPU usage
usleep(10000); // 10 milliseconds
}
// Sleep briefly to reduce CPU usage
usleep(10000); // 10 milliseconds
}
// Execute the program with optional arguments
pid_t pid = fork();
if (pid == 0) {
execvp(argv[arg_offset + 1], &argv[arg_offset + 1]);
// If execvp returns, an error occurred
perror("Error executing program");
exit(EXIT_FAILURE);
} else if (pid < 0) {
perror("Error forking to execute program");
} else {
// Wait for the child process to finish
waitpid(pid, NULL, 0);
}
} while (daemon_mode);
// Close the X display
XCloseDisplay(display);
// Execute the program with optional arguments
execvp(argv[2], &argv[2]);
// If execvp returns, an error occurred
perror("Error executing program");
return EXIT_FAILURE;
return EXIT_SUCCESS;
}