X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/58d994f8f4aa2a6465dc9a2f13e7ba8ddf412ec7..92bfbe46e854e7ff40d6d4297c8df74f1efcf10f:/ppp.c

diff --git a/ppp.c b/ppp.c
index cb8512f..29bf1bc 100644
--- a/ppp.c
+++ b/ppp.c
@@ -5,9 +5,10 @@
 #include <unistd.h>
 #include <errno.h>
 #include <stdlib.h>
-#include <sys/socket.h>
 #include <linux/rtnetlink.h>
+#include <netinet/ip6.h>
 
+#include "dhcp6.h"
 #include "l2tpns.h"
 #include "constants.h"
 #include "plugin.h"
@@ -1480,11 +1481,28 @@ void processipcp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 
 static void ipv6cp_open(sessionidt s, tunnelidt t)
 {
+	int i;
+	groupidt g;
 	LOG(3, s, t, "IPV6CP: Opened\n");
 
 	change_state(s, ipv6cp, Opened);
-	if (session[s].ipv6prefixlen)
-		route6set(s, session[s].ipv6route, session[s].ipv6prefixlen, 1);
+	for (i = 0; i < MAXROUTE6 && session[s].route6[i].ipv6prefixlen; i++)
+	{
+		route6set(s, session[s].route6[i].ipv6route, session[s].route6[i].ipv6prefixlen, 1);
+	}
+
+	if (session[s].ipv6address.s6_addr[0])
+	{
+		// Check if included in prefix
+		if (sessionbyipv6(session[s].ipv6address) != s)
+			route6set(s, session[s].ipv6address, 128, 1);
+	}
+
+	if ((g = grp_groupbysession(s)))
+	{
+		grp_setgrouproute6(g, 1);
+		cluster_send_groupe(g);
+	}
 
 	// Send an initial RA (TODO: Should we send these regularly?)
 	send_ipv6_ra(s, t, NULL);
@@ -1571,8 +1589,16 @@ void processipv6cp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 				gotip++; // seen address
 				if (o[1] != 10) return;
 
-				ident[0] = htonl(session[s].ip);
-				ident[1] = 0;
+				if (session[s].ipv6address.s6_addr[0])
+				{
+					// LSB 64bits of assigned IPv6 address to user (see radius attribut Framed-IPv6-Address)
+					memcpy(&ident[0], &session[s].ipv6address.s6_addr[8], 8);
+				}
+				else
+				{
+					ident[0] = htonl(session[s].ip);
+					ident[1] = 0;
+				}
 
 				if (memcmp(o + 2, ident, sizeof(ident)))
 				{
@@ -1738,7 +1764,7 @@ static void update_sessions_in_stat(sessionidt s, uint16_t l)
 // (i.e. this routine writes to p[-4]).
 void processipin(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 {
-	in_addr_t ip;
+	in_addr_t ip, ip_dst;
 
 	CSTAT(processipin);
 
@@ -1752,6 +1778,7 @@ void processipin(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 	}
 
 	ip = ntohl(*(uint32_t *)(p + 12));
+	ip_dst = *(uint32_t *)(p + 16);
 
 	if (l > MAXETHER)
 	{
@@ -1792,12 +1819,15 @@ void processipin(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 
 	if (session[s].tbf_in)
 	{
-		// Are we throttling this session?
-		if (config->cluster_iam_master)
-			tbf_queue_packet(session[s].tbf_in, p, l);
-		else
-			master_throttle_packet(session[s].tbf_in, p, l);
-		return;
+		if (!config->no_throttle_local_IP || !sessionbyip(ip_dst))
+		{
+			// Are we throttling this session?
+			if (config->cluster_iam_master)
+				tbf_queue_packet(session[s].tbf_in, p, l);
+			else
+				master_throttle_packet(session[s].tbf_in, p, l);
+			return;
+		}
 	}
 
 	// send to ethernet
@@ -2241,7 +2271,19 @@ void processipv6in(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 		return;
 
 	// no spoof
-	if ((ipv4 != session[s].ip || memcmp(&config->ipv6_prefix, &ip, 8)) && sessionbyipv6(ip) != s)
+	if (session[s].ipv6address.s6_addr[0])
+	{
+		if ((sessionbyipv6new(ip) != s) &&
+			(ip.s6_addr[0] != 0xFE || ip.s6_addr[1] != 0x80 || ip.s6_addr16[1] != 0 || ip.s6_addr16[2] != 0 || ip.s6_addr16[3] != 0) &&
+			(!grp_groupbyipv6(ip)))
+		{
+			char str[INET6_ADDRSTRLEN];
+			LOG(5, s, t, "Dropping packet with spoofed IP %s\n",
+					inet_ntop(AF_INET6, &ip, str, INET6_ADDRSTRLEN));
+			return;
+		}
+	}
+	else if ((ipv4 != session[s].ip || memcmp(&config->ipv6_prefix, &ip, 8)) && sessionbyipv6(ip) != s)
 	{
 		char str[INET6_ADDRSTRLEN];
 		LOG(5, s, t, "Dropping packet with spoofed IP %s\n",
@@ -2259,6 +2301,16 @@ void processipv6in(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 		return;
 	}
 
+	// Check if DhcpV6, IP dst: FF02::1:2, Src Port 0x0222 (546), Dst Port 0x0223 (547)
+	if (*(p + 6) == 17 && *(p + 24) == 0xFF && *(p + 25) == 2 &&
+			*(uint32_t *)(p + 26) == 0 && *(uint32_t *)(p + 30) == 0 &&
+			*(uint16_t *)(p + 34) == 0 && *(p + 36) == 0 && *(p + 37) == 1 && *(p + 38) == 0 && *(p + 39) == 2 &&
+			*(p + 40) == 2 && *(p + 41) == 0x22 && *(p + 42) == 2 && *(p + 43) == 0x23)
+	{
+		dhcpv6_process(s, t, p, l);
+		return;
+	}
+
 	// Add on the tun header
 	p -= 4;
 	*(uint32_t *) p = htonl(PKTIPV6);
@@ -2510,9 +2562,9 @@ void sendchap(sessionidt s, tunnelidt t)
 	q[1] = radius[r].id;			// ID
 	q[4] = 16;				// value size (size of challenge)
 	memcpy(q + 5, radius[r].auth, 16);	// challenge
-	strcpy((char *) q + 21, hostname);	// our name
-	*(uint16_t *) (q + 2) = htons(strlen(hostname) + 21); // length
-	tunnelsend(b, strlen(hostname) + 21 + (q - b), t); // send it
+	strcpy((char *) q + 21, config->multi_n_hostname[tunnel[t].indexudp][0]?config->multi_n_hostname[tunnel[t].indexudp]:hostname);	// our name
+	*(uint16_t *) (q + 2) = htons(strlen(config->multi_n_hostname[tunnel[t].indexudp][0]?config->multi_n_hostname[tunnel[t].indexudp]:hostname) + 21); // length
+	tunnelsend(b, strlen(config->multi_n_hostname[tunnel[t].indexudp][0]?config->multi_n_hostname[tunnel[t].indexudp]:hostname) + 21 + (q - b), t); // send it
 }
 
 // fill in a L2TP message with a PPP frame,