X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/bcc2c7408be2d278ceef675b5d989ce6ed395315..ba1c3362c6dc0d65eb3d06368c47b75aa135456b:/l2tplac.c

diff --git a/l2tplac.c b/l2tplac.c
index 4c71d6c..5fb361e 100644
--- a/l2tplac.c
+++ b/l2tplac.c
@@ -1,15 +1,23 @@
 /*
+ * Fernando ALVES 2013
  * Add functionality "LAC" to l2tpns.
  * Used to forward a ppp session to another "LNS".
+ * GPL licenced
  */
+
 #include <errno.h>
 #include <string.h>
+#include <linux/rtnetlink.h>
+#include <netinet/ip6.h>
 
 #include "md5.h"
+#include "dhcp6.h"
 #include "l2tpns.h"
 #include "util.h"
+#include "cluster.h"
 
 #include "l2tplac.h"
+#include "pppoe.h"
 
 /* sequence diagram: Client <--> LAC <--> LNS1 <--> LNS2
  *
@@ -227,6 +235,8 @@ void lac_save_rad_tag_tunnels(sessionidt s)
 			LOG(1, s, session[s].tunnel, "Error, Bad IP tunnel server endpoint \n");
 		else if (strlen(ptunnelrlns[idtag].tunnel_assignment_id) <= 0)
 			LOG(1, s, session[s].tunnel, "Error, No tunnel_assignment_id \n");
+		else if (ptunnelrlns[idtag].tunnel_server_endpoint == ntohl(config->bind_address))
+			LOG(0, s, session[s].tunnel, "Error, IP Remote LNS == IP local bind address (%s) !!!\n", fmtaddr(config->bind_address, 0));
 		else
 		{
 			for (idrlns = 1; idrlns < MAXRLNSTUNNEL; ++idrlns)
@@ -234,7 +244,7 @@ void lac_save_rad_tag_tunnels(sessionidt s)
 				if (pconfigrlns[idrlns].state == CONFRLNSFREE)
 				{
 					pconfigrlns[idrlns].ip = ptunnelrlns[idtag].tunnel_server_endpoint;
-					pconfigrlns[idrlns].port = L2TPPORT; //Default L2TP poart
+					pconfigrlns[idrlns].port = L2TPPORT; //Default L2TP port
 					strcpy(pconfigrlns[idrlns].l2tp_secret, ptunnelrlns[idtag].tunnel_password);
 					strcpy(pconfigrlns[idrlns].tunnel_assignment_id, ptunnelrlns[idtag].tunnel_assignment_id);
 
@@ -288,6 +298,7 @@ static int lac_create_tunnelsession(tunnelidt t, sessionidt s, confrlnsidt i_con
 		tunnel[t].port = pconfigrlns[i_conf].port;
 		tunnel[t].window = 4; // default window
 		tunnel[t].isremotelns = i_conf;
+		tunnel[t].indexudp = config->indexlacudpfd;
 		STAT(tunnel_created);
 
 		random_data(pconfigrlns[i_conf].auth, sizeof(pconfigrlns[i_conf].auth));
@@ -442,7 +453,7 @@ void lac_calc_rlns_auth(tunnelidt t, uint8_t id, uint8_t *out)
 }
 
 // Forward session to LAC or Remote LNS
-int lac_session_forward(uint8_t *buf, int len, sessionidt sess, uint16_t proto)
+int lac_session_forward(uint8_t *buf, int len, sessionidt sess, uint16_t proto, in_addr_t s_addr, int sin_port, uint16_t indexudpfd)
 {
 	uint16_t t = 0, s = 0;
 	uint8_t *p = buf + 2; // First word L2TP options
@@ -463,10 +474,29 @@ int lac_session_forward(uint8_t *buf, int len, sessionidt sess, uint16_t proto)
 
 	if ((!tunnel[t].isremotelns) && (!tunnel[session[sess].tunnel].isremotelns))
 	{
-		LOG(0, sess, session[sess].tunnel, "Link Tunnel Session (%u) broken\n", s);
+		LOG(0, sess, session[sess].tunnel, "Link Tunnel Session (%u/%u) broken\n", s, t);
 		return 0;
 	}
 
+	if (!config->cluster_iam_master)
+	{
+		if ( (proto == PPPIPCP) || (proto == PPPLCP) ||
+			 (proto == PPPPAP) || (proto == PPPCHAP) ||
+			 (proto == PPPIPV6CP && config->ipv6_prefix.s6_addr[0]) ||
+			 (proto == PPPCCP) )
+		{
+			session[sess].last_packet = time_now;
+			master_forward_packet(buf, len, s_addr, sin_port, indexudpfd);
+			return 1;
+		}
+	}
+
+	if (t == TUNNEL_ID_PPPOE)
+	{
+		pppoe_forwardto_session_pppoe(buf, len, sess, proto);
+		return 1;
+	}
+
 	if (*buf & 0x40)
 	{	// length
 		p += 2;