openwrt/package/network/services/dnsmasq/patches/240-ubus.patch

--- a/src/dnsmasq.c
+++ b/src/dnsmasq.c
@@ -19,6 +19,8 @@
 
 #include "dnsmasq.h"
 
+#include <libubus.h>
+
 struct daemon *daemon;
 
 static volatile pid_t pid = 0;
@@ -32,6 +34,64 @@ static void fatal_event(struct event_des
 static int read_event(int fd, struct event_desc *evp, char **msg);
 static void poll_resolv(int force, int do_reload, time_t now);
 
+static struct ubus_context *ubus;
+static struct blob_buf b;
+
+static struct ubus_object_type ubus_object_type = {
+	.name = "dnsmasq",
+};
+
+static struct ubus_object ubus_object = {
+	.name = "dnsmasq",
+	.type = &ubus_object_type,
+};
+
+void ubus_event_bcast(const char *type, const char *mac, const char *ip, const char *name, const char *interface)
+{
+	if (!ubus || !ubus_object.has_subscribers)
+		return;
+
+	blob_buf_init(&b, 0);
+	if (mac)
+		blobmsg_add_string(&b, "mac", mac);
+	if (ip)
+		blobmsg_add_string(&b, "ip", ip);
+	if (name)
+		blobmsg_add_string(&b, "name", name);
+	if (interface)
+		blobmsg_add_string(&b, "interface", interface);
+	ubus_notify(ubus, &ubus_object, type, b.head, -1);
+}
+
+static void set_ubus_listeners(void)
+{
+	if (!ubus)
+		return;
+
+	poll_listen(ubus->sock.fd, POLLIN);
+	poll_listen(ubus->sock.fd, POLLERR);
+	poll_listen(ubus->sock.fd, POLLHUP);
+}
+
+static void check_ubus_listeners()
+{
+	if (!ubus) {
+		ubus = ubus_connect(NULL);
+		if (ubus)
+			ubus_add_object(ubus, &ubus_object);
+		else
+			return;
+	}
+
+	if (poll_check(ubus->sock.fd, POLLIN))
+		ubus_handle_event(ubus);
+
+	if (poll_check(ubus->sock.fd, POLLHUP)) {
+		ubus_free(ubus);
+		ubus = NULL;
+	}
+}
+
 int main (int argc, char **argv)
 {
   int bind_fallback = 0;
@@ -944,6 +1004,7 @@ int main (int argc, char **argv)
       set_dbus_listeners();
 #endif	
   
+      set_ubus_listeners();
 #ifdef HAVE_DHCP
       if (daemon->dhcp || daemon->relay4)
 	{
@@ -1074,6 +1135,8 @@ int main (int argc, char **argv)
       check_dbus_listeners();
 #endif
       
+      check_ubus_listeners();
+
       check_dns_listeners(now);
 
 #ifdef HAVE_TFTP
--- a/Makefile
+++ b/Makefile
@@ -85,7 +85,7 @@ all : $(BUILDDIR)
 	@cd $(BUILDDIR) && $(MAKE) \
  top="$(top)" \
  build_cflags="$(version) $(dbus_cflags) $(idn2_cflags) $(idn_cflags) $(ct_cflags) $(lua_cflags) $(nettle_cflags)" \
- build_libs="$(dbus_libs) $(idn2_libs) $(idn_libs) $(ct_libs) $(lua_libs) $(sunos_libs) $(nettle_libs) $(gmp_libs)" \
+ build_libs="$(dbus_libs) $(idn2_libs) $(idn_libs) $(ct_libs) $(lua_libs) $(sunos_libs) $(nettle_libs) $(gmp_libs) -lubox -lubus" \
  -f $(top)/Makefile dnsmasq 
 
 mostly_clean :
--- a/src/dnsmasq.h
+++ b/src/dnsmasq.h
@@ -1440,6 +1440,8 @@ void emit_dbus_signal(int action, struct
 #  endif
 #endif
 
+void ubus_event_bcast(const char *type, const char *mac, const char *ip, const char *name, const char *interface);
+
 /* ipset.c */
 #ifdef HAVE_IPSET
 void ipset_init(void);
--- a/src/rfc2131.c
+++ b/src/rfc2131.c
@@ -1636,6 +1636,10 @@ static void log_packet(char *type, void
 	      daemon->namebuff,
 	      string ? string : "",
 	      err ? err : "");
+  if (!strcmp(type, "DHCPACK"))
+	  ubus_event_bcast("dhcp.ack", daemon->namebuff, addr ? inet_ntoa(a) : NULL, string ? string : NULL, interface);
+  else if (!strcmp(type, "DHCPRELEASE"))
+	  ubus_event_bcast("dhcp.release", daemon->namebuff, addr ? inet_ntoa(a) : NULL, string ? string : NULL, interface);
 }
 
 static void log_options(unsigned char *start, u32 xid)