libnmb: Move "read_packet" to nmbd

It's only used there

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Jan 24 05:48:19 CET 2018 on sn-devel-144

1 files changed, 35 insertions, 0 deletions

diff --git a/source3/nmbd/nmbd_packets.c b/source3/nmbd/nmbd_packets.c
index 2b7cc82f341..bbcb9582ec5 100644
--- a/source3/nmbd/nmbd_packets.c
+++ b/source3/nmbd/nmbd_packets.c
@@ -1879,6 +1879,41 @@ static void nmbd_fd_handler(struct tevent_context *ev,
 	attr->triggered = true;
 }
 
+/*******************************************************************
+ Read a packet from a socket and parse it, returning a packet ready
+ to be used or put on the queue. This assumes a UDP socket.
+******************************************************************/
+
+static struct packet_struct *read_packet(int fd,enum packet_type packet_type)
+{
+	struct packet_struct *packet;
+	struct sockaddr_storage sa;
+	struct sockaddr_in *si = (struct sockaddr_in *)&sa;
+	char buf[MAX_DGRAM_SIZE];
+	int length;
+
+	length = read_udp_v4_socket(fd,buf,sizeof(buf),&sa);
+	if (length < MIN_DGRAM_SIZE || sa.ss_family != AF_INET) {
+		return NULL;
+	}
+
+	packet = parse_packet(buf,
+			length,
+			packet_type,
+			si->sin_addr,
+			ntohs(si->sin_port));
+	if (!packet)
+		return NULL;
+
+	packet->recv_fd = fd;
+	packet->send_fd = -1;
+
+	DEBUG(5,("Received a packet of len %d from (%s) port %d\n",
+		 length, inet_ntoa(packet->ip), packet->port ) );
+
+	return(packet);
+}
+
 /****************************************************************************
   Listens for NMB or DGRAM packets, and queues them.
   return True if the socket is dead