sway/swaybar/main.c
Ian Fan 47abc45e86 swaybar: prevent signal handler from firing during termination
This prevents a heap-use-after-free crash when sway terminates.
2019-02-18 15:11:48 -05:00

105 lines
2.3 KiB
C

#define _POSIX_C_SOURCE 200809L
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <getopt.h>
#include "swaybar/bar.h"
#include "ipc-client.h"
#include "log.h"
static struct swaybar swaybar;
void sig_handler(int signal) {
swaybar.running = false;
}
int main(int argc, char **argv) {
char *socket_path = NULL;
bool debug = false;
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
{"socket", required_argument, NULL, 's'},
{"bar_id", required_argument, NULL, 'b'},
{"debug", no_argument, NULL, 'd'},
{0, 0, 0, 0}
};
const char *usage =
"Usage: swaybar [options...]\n"
"\n"
" -h, --help Show help message and quit.\n"
" -v, --version Show the version number and quit.\n"
" -s, --socket <socket> Connect to sway via socket.\n"
" -b, --bar_id <id> Bar ID for which to get the configuration.\n"
" -d, --debug Enable debugging.\n"
"\n"
" PLEASE NOTE that swaybar will be automatically started by sway as\n"
" soon as there is a 'bar' configuration block in your config file.\n"
" You should never need to start it manually.\n";
int c;
while (1) {
int option_index = 0;
c = getopt_long(argc, argv, "hvs:b:d", long_options, &option_index);
if (c == -1) {
break;
}
switch (c) {
case 's': // Socket
socket_path = strdup(optarg);
break;
case 'b': // Type
swaybar.id = strdup(optarg);
break;
case 'v':
fprintf(stdout, "swaybar version " SWAY_VERSION "\n");
exit(EXIT_SUCCESS);
break;
case 'd': // Debug
debug = true;
break;
default:
fprintf(stderr, "%s", usage);
exit(EXIT_FAILURE);
}
}
if (debug) {
sway_log_init(SWAY_DEBUG, NULL);
} else {
sway_log_init(SWAY_INFO, NULL);
}
if (!swaybar.id) {
sway_log(SWAY_ERROR, "No bar_id passed. "
"Provide --bar_id or let sway start swaybar");
return 1;
}
if (!socket_path) {
socket_path = get_socketpath();
if (!socket_path) {
sway_log(SWAY_ERROR, "Unable to retrieve socket path");
return 1;
}
}
if (!bar_setup(&swaybar, socket_path)) {
free(socket_path);
return 1;
}
free(socket_path);
signal(SIGINT, sig_handler);
signal(SIGTERM, sig_handler);
swaybar.running = true;
bar_run(&swaybar);
bar_teardown(&swaybar);
return 0;
}