X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/c3633ceaba83fc443e2703367e05b16d87ad71aa..9bc9ec99e68baaa0778ca500f488a5887e0fd5ec:/l2tpns.c?ds=inline

diff --git a/l2tpns.c b/l2tpns.c
index fb83200..d70786b 100644
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -4,7 +4,7 @@
 // Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
 // vim: sw=8 ts=8
 
-char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.166 2006/05/16 06:46:37 bodea Exp $";
+char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.169 2006/07/01 12:40:17 bodea Exp $";
 
 #include <arpa/inet.h>
 #include <assert.h>
@@ -126,6 +126,8 @@ config_descriptt config_values[] = {
 	CONFIG("radius_secret", radiussecret, STRING),
 	CONFIG("radius_authtypes", radius_authtypes_s, STRING),
 	CONFIG("radius_dae_port", radius_dae_port, SHORT),
+	CONFIG("radius_bind_min", radius_bind_min, SHORT),
+	CONFIG("radius_bind_max", radius_bind_max, SHORT),
 	CONFIG("allow_duplicate_users", allow_duplicate_users, BOOL),
 	CONFIG("guest_account", guest_user, STRING),
 	CONFIG("bind_address", bind_address, IPv4),
@@ -625,7 +627,7 @@ static void initudp(void)
 		int flags = fcntl(udpfd, F_GETFL, 0);
 		fcntl(udpfd, F_SETFL, flags | O_NONBLOCK);
 	}
-	if (bind(udpfd, (void *) &addr, sizeof(addr)) < 0)
+	if (bind(udpfd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
 	{
 		LOG(0, 0, 0, "Error in UDP bind: %s\n", strerror(errno));
 		exit(1);
@@ -638,7 +640,7 @@ static void initudp(void)
 	controlfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 	setsockopt(controlfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
 	setsockopt(controlfd, SOL_IP, IP_PKTINFO, &on, sizeof(on)); // recvfromto
-	if (bind(controlfd, (void *) &addr, sizeof(addr)) < 0)
+	if (bind(controlfd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
 	{
 		LOG(0, 0, 0, "Error in control bind: %s\n", strerror(errno));
 		exit(1);
@@ -651,7 +653,7 @@ static void initudp(void)
 	daefd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 	setsockopt(daefd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
 	setsockopt(daefd, SOL_IP, IP_PKTINFO, &on, sizeof(on)); // recvfromto
-	if (bind(daefd, (void *) &addr, sizeof(addr)) < 0)
+	if (bind(daefd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
 	{
 		LOG(0, 0, 0, "Error in DAE bind: %s\n", strerror(errno));
 		exit(1);
@@ -1075,6 +1077,7 @@ void processmpframe(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l, uint8_t e
 		p += 2;
 		l -= 2;
 	}
+
 	if (proto == PPPIP)
 	{
 		if (session[s].die)
@@ -1082,7 +1085,8 @@ void processmpframe(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l, uint8_t e
 			LOG(4, s, t, "MPPP: Session %u is closing.  Don't process PPP packets\n", s);
 			return;              // closing session, PPP not processed
 		}
-		session[s].last_packet = time_now;
+
+		session[s].last_packet = session[s].last_data = time_now;
 		processipin(s, t, p, l);
 	}
 	else if (proto == PPPIPV6 && config->ipv6_prefix.s6_addr[0])
@@ -1093,7 +1097,7 @@ void processmpframe(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l, uint8_t e
 			return;              // closing session, PPP not processed
 		}
 
-		session[s].last_packet = time_now;
+		session[s].last_packet = session[s].last_data = time_now;
 		processipv6in(s, t, p, l);
 	}
 	else
@@ -1166,6 +1170,7 @@ static void processipout(uint8_t *buf, int len)
 	}
 	t = session[s].tunnel;
 	sp = &session[s];
+	sp->last_data = time_now;
 
 	// DoS prevention: enforce a maximum number of packets per 0.1s for a session
 	if (config->max_packets > 0)
@@ -1363,6 +1368,7 @@ static void processipv6out(uint8_t * buf, int len)
 	}
 	t = session[s].tunnel;
 	sp = &session[s];
+	sp->last_data = time_now;
 
 	// FIXME: add DoS prevention/filters?
 
@@ -2180,9 +2186,10 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 			int error = 0;
 			char *msg = 0;
 
-			// default disconnect cause/message on receipt
-			// of CDN (set to more specific value from
-			// attribute 46 if present below).
+			// Default disconnect cause/message on receipt of CDN.  Set to
+			// more specific value from attribute 1 (result code) or 46
+			// (disconnect cause) if present below.
+			int disc_cause_set = 0;
 			int disc_cause = TERM_NAS_REQUEST;
 			char const *disc_reason = "Closed (Received CDN).";
 
@@ -2292,25 +2299,41 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 				case 1:     // result code
 					{
 						uint16_t rescode = ntohs(*(uint16_t *) b);
-						const char* resdesc = "(unknown)";
+						char const *resdesc = "(unknown)";
+						char const *errdesc = NULL;
+						int cause = 0;
+
 						if (message == 4)
 						{ /* StopCCN */
 							resdesc = l2tp_stopccn_result_code(rescode);
+							cause = TERM_LOST_SERVICE;
 						}
 						else if (message == 14)
 						{ /* CDN */
 							resdesc = l2tp_cdn_result_code(rescode);
+							if (rescode == 1)
+								cause = TERM_LOST_CARRIER;
+							else
+								cause = TERM_ADMIN_RESET;
 						}
 
 						LOG(4, s, t, "   Result Code %u: %s\n", rescode, resdesc);
 						if (n >= 4)
 						{
 							uint16_t errcode = ntohs(*(uint16_t *)(b + 2));
-							LOG(4, s, t, "   Error Code %u: %s\n", errcode, l2tp_error_code(errcode));
+							errdesc = l2tp_error_code(errcode);
+							LOG(4, s, t, "   Error Code %u: %s\n", errcode, errdesc);
 						}
 						if (n > 4)
 							LOG(4, s, t, "   Error String: %.*s\n", n-4, b+4);
 
+						if (cause && disc_cause_set < mtype) // take cause from attrib 46 in preference
+						{
+							disc_cause_set = mtype;
+							disc_reason = errdesc ? errdesc : resdesc;
+							disc_cause = cause;
+						}
+
 						break;
 					}
 					break;
@@ -2502,6 +2525,8 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 							"(code=%u, proto=%04X, dir=%u, msg=\"%.*s\")\n",
 							code, proto, dir, n - 5, b + 5);
 
+						disc_cause_set = mtype;
+
 						switch (code)
 						{
 						case 1: // admin disconnect
@@ -2642,7 +2667,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 						session[s].opened = time_now;
 						session[s].tunnel = t;
 						session[s].far = asession;
-						session[s].last_packet = time_now;
+						session[s].last_packet = session[s].last_data = time_now;
 						LOG(3, s, t, "New session (%u/%u)\n", tunnel[t].far, session[s].far);
 						control16(c, 14, s, 1); // assigned session
 						controladd(c, asession, t); // send the reply
@@ -2803,7 +2828,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 				return;              // closing session, PPP not processed
 			}
 
-			session[s].last_packet = time_now;
+			session[s].last_packet = session[s].last_data = time_now;
 			if (session[s].walled_garden && !config->cluster_iam_master)
 			{
 				master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port);
@@ -2820,7 +2845,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 				return;              // closing session, PPP not processed
 			}
 
-			session[s].last_packet = time_now;
+			session[s].last_packet = session[s].last_data = time_now;
 			if (session[s].walled_garden && !config->cluster_iam_master)
 			{
 				master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port);
@@ -2837,7 +2862,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 				return;              // closing session, PPP not processed
 			}
 
-			session[s].last_packet = time_now;
+			session[s].last_packet = session[s].last_data = time_now;
 			if (session[s].walled_garden && !config->cluster_iam_master)
 			{
 				master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port);
@@ -3195,6 +3220,24 @@ static void regular_cleanups(double period)
 			s_actions++;
 		}
 
+		// Drop sessions who have reached session_timeout seconds
+		if (session[s].session_timeout && (time_now - session[s].opened >= session[s].session_timeout))
+		{
+			sessionshutdown(s, "Session Timeout Reached", CDN_ADMIN_DISC, TERM_SESSION_TIMEOUT);
+			STAT(session_timeout);
+			s_actions++;
+			continue;
+		}
+
+		// Drop sessions who have reached idle_timeout seconds
+		if (session[s].last_data && session[s].idle_timeout && (time_now - session[s].last_data >= session[s].idle_timeout))
+		{
+			sessionshutdown(s, "Idle Timeout Reached", CDN_ADMIN_DISC, TERM_IDLE_TIMEOUT);
+			STAT(session_timeout);
+			s_actions++;
+			continue;
+		}
+
 		// Check for actions requested from the CLI
 		if ((a = cli_session_actions[s].action))
 		{
@@ -4876,7 +4919,7 @@ int sessionsetup(sessionidt s, tunnelidt t)
 	if (session[s].throttle_in || session[s].throttle_out)
 		throttle_session(s, session[s].throttle_in, session[s].throttle_out);
 
-	session[s].last_packet = time_now;
+	session[s].last_packet = session[s].last_data = time_now;
 
 	LOG(2, s, t, "Login by %s at %s from %s (%s)\n", session[s].user,
 		fmtaddr(htonl(session[s].ip), 0),
@@ -5439,7 +5482,7 @@ int cmd_show_hist_idle(struct cli_def *cli, char *command, char **argv, int argc
 		if (!session[s].opened)
 			continue;
 
-		idle = time_now - session[s].last_packet;
+		idle = time_now - session[s].last_data;
 		idle /= 5 ; // In multiples of 5 seconds.
 		if (idle < 0)
 			idle = 0;