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// bar-networkd — network status daemon for bar
//
// Uses SystemConfiguration to listen for network state changes
// (WiFi connect/disconnect, IP address changes, VPN toggle) and
// posts a Darwin notification.
//
// Compile:
// cc -o bar-networkd daemons/networkd.c \
// -framework SystemConfiguration -framework CoreFoundation
#include <SystemConfiguration/SystemConfiguration.h>
#include <notify.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static volatile int keep_running = 1;
static void handle_signal(int sig) {
(void)sig;
keep_running = 0;
}
static void network_changed(
SCDynamicStoreRef store, CFArrayRef changedKeys, void *info
) {
(void)store; (void)changedKeys; (void)info;
notify_post("bar.touch.<block-name>");
}
int main(void) {
signal(SIGINT, handle_signal);
signal(SIGTERM, handle_signal);
SCDynamicStoreContext context = {0, NULL, NULL, NULL, NULL};
SCDynamicStoreRef store = SCDynamicStoreCreate(
NULL, CFSTR("bar-networkd"), network_changed, &context);
if (!store) {
fprintf(stderr, "bar-networkd: could not create dynamic store\n");
return 1;
}
// Watch for IPv4, IPv6, and WiFi state changes
const void *keys[] = {
CFSTR("State:/Network/Global/IPv4"),
CFSTR("State:/Network/Global/IPv6"),
CFSTR("State:/Network/Interface/en0/AirPort"),
CFSTR("State:/Network/Interface/en1/AirPort"),
};
CFArrayRef keyArray = CFArrayCreate(
NULL, keys, 4, &kCFTypeArrayCallBacks);
SCDynamicStoreSetNotificationKeys(store, keyArray, NULL);
CFRelease(keyArray);
CFRunLoopSourceRef source = SCDynamicStoreCreateRunLoopSource(NULL, store, 0);
CFRunLoopAddSource(CFRunLoopGetCurrent(), source, kCFRunLoopDefaultMode);
CFRelease(source);
while (keep_running) {
pause();
}
CFRelease(store);
return 0;
}
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