From: Rafał Miłecki <rafal@milecki.pl>
Date: Wed, 8 Feb 2017 15:47:52 +0000 (+0100)
Subject: Rename service_reply_a to dns_reply_a and move it to proper file
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=55a5d75b5c051c5828b0b6390726b8353f909b3c;p=project%2Fmdnsd.git

Rename service_reply_a to dns_reply_a and move it to proper file

This function doesn't really do anything service specify, it just sends
an A(AAA) records. It could probably be used even without any services
registered.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: John Crispin <john@phrozen.org>
---

diff --git a/dns.c b/dns.c
index 63788f7..7ca705e 100644
--- a/dns.c
+++ b/dns.c
@@ -15,6 +15,7 @@
 #include <sys/stat.h>
 
 #include <fcntl.h>
+#include <ifaddrs.h>
 #include <time.h>
 #include <stdio.h>
 #include <unistd.h>
@@ -180,6 +181,35 @@ dns_send_answer(struct interface *iface, const char *answer)
 		fprintf(stderr, "failed to send question\n");
 }
 
+void
+dns_reply_a(struct interface *iface, int ttl)
+{
+	struct ifaddrs *ifap, *ifa;
+	struct sockaddr_in *sa;
+	struct sockaddr_in6 *sa6;
+
+	getifaddrs(&ifap);
+
+	dns_init_answer();
+	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
+		if (strcmp(ifa->ifa_name, iface->name))
+			continue;
+		if (ifa->ifa_addr->sa_family == AF_INET) {
+			sa = (struct sockaddr_in *) ifa->ifa_addr;
+			dns_add_answer(TYPE_A, (uint8_t *) &sa->sin_addr, 4, ttl);
+		}
+		if (ifa->ifa_addr->sa_family == AF_INET6) {
+			uint8_t ll_prefix[] = {0xfe, 0x80 };
+			sa6 = (struct sockaddr_in6 *) ifa->ifa_addr;
+			if (!memcmp(&sa6->sin6_addr, &ll_prefix, 2))
+				dns_add_answer(TYPE_AAAA, (uint8_t *) &sa6->sin6_addr, 16, ttl);
+		}
+	}
+	dns_send_answer(iface, mdns_hostname_local);
+
+	freeifaddrs(ifap);
+}
+
 static int
 scan_name(const uint8_t *buffer, int len)
 {
@@ -345,7 +375,7 @@ parse_question(struct interface *iface, char *name, struct dns_question *q)
 		if (host)
 			*host = '\0';
 		if (!strcmp(mdns_hostname, name))
-			service_reply_a(iface, announce_ttl);
+			dns_reply_a(iface, announce_ttl);
 		break;
 	};
 }
diff --git a/dns.h b/dns.h
index 6210e0e..7f3cbe1 100644
--- a/dns.h
+++ b/dns.h
@@ -77,6 +77,7 @@ void dns_send_question(struct interface *iface, const char *question, int type,
 void dns_init_answer(void);
 void dns_add_answer(int type, const uint8_t *rdata, uint16_t rdlength, int ttl);
 void dns_send_answer(struct interface *iface, const char *answer);
+void dns_reply_a(struct interface *iface, int ttl);
 const char* dns_type_string(uint16_t type);
 void dns_handle_packet(struct interface *iface, struct sockaddr *s, uint16_t port, uint8_t *buf, int len);
 
diff --git a/interface.c b/interface.c
index f09329b..463335a 100644
--- a/interface.c
+++ b/interface.c
@@ -621,7 +621,7 @@ void interface_shutdown(void)
 	vlist_for_each_element(&interfaces, iface, node)
 		if (iface->fd.fd > 0 && iface->multicast) {
 			service_announce(iface, 0);
-			service_reply_a(iface, 0);
+			dns_reply_a(iface, 0);
 		}
 	vlist_for_each_element(&interfaces, iface, node)
 		interface_close(iface);
diff --git a/service.c b/service.c
index 8d514c2..a3a5bb4 100644
--- a/service.c
+++ b/service.c
@@ -15,7 +15,6 @@
 #include <arpa/nameser.h>
 #include <sys/socket.h>
 
-#include <ifaddrs.h>
 #include <resolv.h>
 #include <glob.h>
 #include <stdio.h>
@@ -118,35 +117,6 @@ service_timeout(struct service *s)
 	return t;
 }
 
-void
-service_reply_a(struct interface *iface, int ttl)
-{
-	struct ifaddrs *ifap, *ifa;
-	struct sockaddr_in *sa;
-	struct sockaddr_in6 *sa6;
-
-	getifaddrs(&ifap);
-
-	dns_init_answer();
-	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
-		if (strcmp(ifa->ifa_name, iface->name))
-			continue;
-		if (ifa->ifa_addr->sa_family == AF_INET) {
-			sa = (struct sockaddr_in *) ifa->ifa_addr;
-			dns_add_answer(TYPE_A, (uint8_t *) &sa->sin_addr, 4, ttl);
-		}
-		if (ifa->ifa_addr->sa_family == AF_INET6) {
-			uint8_t ll_prefix[] = {0xfe, 0x80 };
-			sa6 = (struct sockaddr_in6 *) ifa->ifa_addr;
-			if (!memcmp(&sa6->sin6_addr, &ll_prefix, 2))
-				dns_add_answer(TYPE_AAAA, (uint8_t *) &sa6->sin6_addr, 16, ttl);
-		}
-	}
-	dns_send_answer(iface, mdns_hostname_local);
-
-	freeifaddrs(ifap);
-}
-
 static void
 service_reply_single(struct interface *iface, struct service *s, const char *match, int ttl, int force)
 {
@@ -188,7 +158,7 @@ service_reply(struct interface *iface, const char *match, int ttl)
 		return;
 
 	if (ttl)
-		service_reply_a(iface, ttl);
+		dns_reply_a(iface, ttl);
 }
 
 void
diff --git a/service.h b/service.h
index 49c2aed..c2f51f4 100644
--- a/service.h
+++ b/service.h
@@ -19,6 +19,5 @@ extern void service_cleanup(void);
 extern void service_announce(struct interface *iface, int ttl);
 extern void service_announce_services(struct interface *iface, const char *service, int ttl);
 extern void service_reply(struct interface *iface, const char *match, int ttl);
-extern void service_reply_a(struct interface *iface, int ttl);
 
 #endif