X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/42af131396ce5cd22eacbae64dfefd742aefa6a0..f402c659e1ee988a4b559afa1b54d85f3b9996b7:/ppp.c

diff --git a/ppp.c b/ppp.c
index 92349e4..d7770e5 100644
--- a/ppp.c
+++ b/ppp.c
@@ -1,6 +1,6 @@
 // L2TPNS PPP Stuff
 
-char const *cvs_id_ppp = "$Id: ppp.c,v 1.82 2005/09/16 05:04:29 bodea Exp $";
+char const *cvs_id_ppp = "$Id: ppp.c,v 1.87 2005/12/04 13:06:50 bodea Exp $";
 
 #include <stdio.h>
 #include <string.h>
@@ -459,7 +459,7 @@ static void ppp_code_rej(sessionidt s, tunnelidt t, uint16_t proto,
 
 	*q = CodeRej;
 	*(q + 1) = ++sess_local[s].lcp_ident;
-	*(uint16_t *)(q + 2) = l;
+	*(uint16_t *)(q + 2) = htons(l);
 	memcpy(q + 4, p, l - 4);
 
 	LOG(2, s, t, "Unexpected %s code %s\n", pname, ppp_code(*p));
@@ -575,7 +575,18 @@ void processlcp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 			switch (type)
 			{
 				case 1: // Maximum-Receive-Unit
-					session[s].mru = ntohs(*(uint16_t *)(o + 2));
+					{
+						uint16_t mru = ntohs(*(uint16_t *)(o + 2));
+						if (mru >= 576)
+						{
+							session[s].mru = mru;
+							break;
+						}
+
+						LOG(3, s, t, "    Remote requesting MRU of %u.  Rejecting.\n", mru);
+						mru = htons(MRU);
+						q = ppp_conf_nak(s, b, sizeof(b), PPPLCP, &response, q, p, o, (uint8_t *) &mru, sizeof(mru));
+					}
 					break;
 
 				case 2: // Async-Control-Character-Map
@@ -903,11 +914,17 @@ static void ipcp_open(sessionidt s, tunnelidt t)
 
 	change_state(s, ipcp, Opened);
 
-	if (!session[s].walled_garden)
+	if (!(session[s].walled_garden || session[s].flags & SESSION_STARTED))
 	{
 		uint16_t r = radiusnew(s);
 		if (r)
+		{
 			radiussend(r, RADIUSSTART); // send radius start
+
+			// don't send further Start records if IPCP is restarted
+			session[s].flags |= SESSION_STARTED;
+			cluster_send_session(s);
+		}
 	}
 
 	// start IPv6 if configured and still in passive state
@@ -1020,7 +1037,7 @@ void processipcp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 			case 131: // secondary DNS
 				if (o[1] != 6 || o[1] > length) return;
 
-				addr = htonl(session[s].dns1);
+				addr = htonl(session[s].dns2);
 				if (memcmp(o + 2, &addr, sizeof(addr)))
 				{
 					q = ppp_conf_nak(s, b, sizeof(b), PPPIPCP, &response, q, p, o, (uint8_t *) &addr, sizeof(addr));
@@ -1335,7 +1352,7 @@ void processipin(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 
 	LOG_HEX(5, "IP", p, l);
 
-	if (l < 20 || l < ntohl(*(uint32_t *)(p + 2)))
+	if (l < 20)
 	{
 		LOG(1, s, t, "IP packet too short %d\n", l);
 		STAT(tunnel_rx_errors);
@@ -1747,12 +1764,12 @@ uint8_t *makeppp(uint8_t *b, int size, uint8_t *p, int l, sessionidt s, tunnelid
 	*(uint16_t *) (b + 2) = htons(tunnel[t].far); // tunnel
 	*(uint16_t *) (b + 4) = htons(session[s].far); // session
 	b += 6;
-	if (mtype == PPPLCP || !(session[s].l2tp_flags & SESSIONACFC))
+	if (mtype == PPPLCP || !(session[s].flags & SESSION_ACFC))
 	{
 		*(uint16_t *) b = htons(0xFF03); // HDLC header
 		b += 2;
 	}
-	if (mtype < 0x100 && session[s].l2tp_flags & SESSIONPFC)
+	if (mtype < 0x100 && session[s].flags & SESSION_PFC)
 		*b++ = mtype;
 	else
 	{
@@ -1839,6 +1856,7 @@ void sendlcp(sessionidt s, tunnelidt t)
 	if (config->debug > 3) dumplcp(q, l - q);
 
 	tunnelsend(b, (l - b), t);
+	restart_timer(s, lcp);
 }
 
 // Send CCP request for no compression
@@ -1857,4 +1875,5 @@ void sendccp(sessionidt s, tunnelidt t)
 
 	LOG_HEX(5, "PPPCCP", q, 4);
 	tunnelsend(b, (q - b) + 4 , t);
+	restart_timer(s, ccp);
 }