1 files changed, 67 insertions, 0 deletions
diff --git a/daemons/networkd.c b/daemons/networkd.c
new file mode 100644
index 0000000..3fea2c7
--- /dev/null
+++ b/daemons/networkd.c
@@ -0,0 +1,67 @@
+// 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;
+}