X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/6b70732490a095f1937c7ad8882d5dd164de4e7e..781b0fde104ecf5f22c9c5322e58180f0b4a88a5:/ppp.c

diff --git a/ppp.c b/ppp.c
index e786c16..c4f9ab4 100644
--- a/ppp.c
+++ b/ppp.c
@@ -5,6 +5,10 @@
 #include <unistd.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <linux/rtnetlink.h>
+#include <netinet/ip6.h>
+
+#include "dhcp6.h"
 #include "l2tpns.h"
 #include "constants.h"
 #include "plugin.h"
@@ -1477,11 +1481,21 @@ void processipcp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 
 static void ipv6cp_open(sessionidt s, tunnelidt t)
 {
+	int i;
 	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);
+	}
 
 	// Send an initial RA (TODO: Should we send these regularly?)
 	send_ipv6_ra(s, t, NULL);
@@ -1568,8 +1582,16 @@ 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)))
 				{
@@ -2242,7 +2264,18 @@ 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))
+		{
+			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",
@@ -2260,6 +2293,16 @@ 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);