X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/ea91ab45621499ae7949178297d9da6d37b0e4e0..98f1b9718dbc53cb99a3eaea6e96247becdee07f:/radius.c

diff --git a/radius.c b/radius.c
index 6cb9e16..f35e78d 100644
--- a/radius.c
+++ b/radius.c
@@ -1,6 +1,6 @@
 // L2TPNS Radius Stuff
 
-char const *cvs_id_radius = "$Id: radius.c,v 1.47 2005/12/19 06:18:13 bodea Exp $";
+char const *cvs_id_radius = "$Id: radius.c,v 1.55 2006/08/02 14:17:30 bodea Exp $";
 
 #include <time.h>
 #include <stdio.h>
@@ -45,6 +45,25 @@ static void calc_auth(const void *buf, size_t len, const uint8_t *in, uint8_t *o
 void initrad(void)
 {
 	int i;
+	uint16_t port = 0;
+	uint16_t min = config->radius_bind_min;
+	uint16_t max = config->radius_bind_max;
+	int inc = 1;
+	struct sockaddr_in addr;
+
+	if (min)
+	{
+		port = min;
+		if (!max)
+			max = ~0 - 1;
+	}
+	else if (max) /* no minimum specified, bind from max down */
+	{
+		port = max;
+		min = 1;
+		inc = -1;
+	}
+
 	LOG(3, 0, 0, "Creating %d sockets for RADIUS queries\n", RADIUS_FDS);
 	radfds = calloc(sizeof(int), RADIUS_FDS);
 	for (i = 0; i < RADIUS_FDS; i++)
@@ -53,6 +72,27 @@ void initrad(void)
 		radfds[i] = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 		flags = fcntl(radfds[i], F_GETFL, 0);
 		fcntl(radfds[i], F_SETFL, flags | O_NONBLOCK);
+
+		if (port)
+		{
+			int b;
+
+			memset(&addr, 0, sizeof(addr));
+			addr.sin_family = AF_INET;
+			addr.sin_addr.s_addr = INADDR_ANY;
+
+			do {
+				addr.sin_port = htons(port);
+				if ((b = bind(radfds[i], (struct sockaddr *) &addr, sizeof(addr))) < 0)
+				{
+					if ((port += inc) < min || port > max)
+					{
+						LOG(0, 0, 0, "Can't bind RADIUS socket in range %u-%u\n", min, max);
+						exit(1);
+					}
+				}
+			} while (b < 0);
+		}
 	}
 }
 
@@ -158,7 +198,7 @@ void radiussend(uint16_t r, uint8_t state)
 		if (s)
 		{
 			if (state == RADIUSAUTH)
-				sessionshutdown(s, "RADIUS timeout.", 3, 0);
+				sessionshutdown(s, "RADIUS timeout.", CDN_ADMIN_DISC, TERM_REAUTHENTICATION_FAILURE);
 			else
 			{
 				LOG(1, s, session[s].tunnel, "RADIUS timeout, but in state %s so don't timeout session\n",
@@ -248,8 +288,8 @@ void radiussend(uint16_t r, uint8_t state)
 			p += p[1];
 		}
 	}
-	else if (state == RADIUSSTART || state == RADIUSSTOP || state == RADIUSINTERIM)
-	{			// accounting
+	else // accounting
+	{
 		*p = 40;	// accounting type
 		p[1] = 6;
 		*(uint32_t *) (p + 2) = htonl(state - RADIUSSTART + 1); // start=1, stop=2, interim=3
@@ -304,6 +344,24 @@ void radiussend(uint16_t r, uint8_t state)
 				p[1] = 6;
 				*(uint32_t *) (p + 2) = htonl(session[s].cout_wrap);
 				p += p[1];
+
+				if (state == RADIUSSTOP && radius[r].term_cause)
+				{
+				    	*p = 49; // acct-terminate-cause
+					p[1] = 6;
+					*(uint32_t *) (p + 2) = htonl(radius[r].term_cause);
+					p += p[1];
+
+					if (radius[r].term_msg)
+					{
+						*p = 26;				// vendor-specific
+						*(uint32_t *) (p + 2) = htonl(9);	// Cisco
+						p[6] = 1;				// Cisco-AVPair
+						p[7] = 2 + sprintf((char *) p + 8, "disc-cause-ext=%s", radius[r].term_msg);
+						p[1] = p[7] + 6;
+						p += p[1];
+					}
+				}
 			}
 
 			{
@@ -312,6 +370,7 @@ void radiussend(uint16_t r, uint8_t state)
 			}
 		}
 	}
+
 	if (s)
 	{
 		*p = 5;		// NAS-Port
@@ -328,52 +387,73 @@ void radiussend(uint16_t r, uint8_t state)
 		p[1] = 6;
 		*(uint32_t *) (p + 2) = htonl(1); // PPP
 		p += p[1];
-	}
-	if (s && session[s].ip)
-	{
-		*p = 8;			// Framed-IP-Address
-		p[1] = 6;
-		*(uint32_t *) (p + 2) = htonl(session[s].ip);
-		p += p[1];
-	}
-	if (s && session[s].route[0].ip)
-	{
-		int r;
-		for (r = 0; s && r < MAXROUTE && session[s].route[r].ip; r++)
+
+		if (session[s].ip)
 		{
-		    	int width = 32;
-			if (session[s].route[r].mask)
+			*p = 8;			// Framed-IP-Address
+			p[1] = 6;
+			*(uint32_t *) (p + 2) = htonl(session[s].ip);
+			p += p[1];
+		}
+
+		if (session[s].route[0].ip)
+		{
+			int r;
+			for (r = 0; s && r < MAXROUTE && session[s].route[r].ip; r++)
 			{
-			    int mask = session[s].route[r].mask;
-			    while (!(mask & 1))
-			    {
-				width--;
-				mask >>= 1;
-			    }
+				int width = 32;
+				if (session[s].route[r].mask)
+				{
+				    int mask = session[s].route[r].mask;
+				    while (!(mask & 1))
+				    {
+					width--;
+					mask >>= 1;
+				    }
+				}
+
+				*p = 22;	// Framed-Route
+				p[1] = sprintf((char *) p + 2, "%s/%d %s 1",
+					fmtaddr(htonl(session[s].route[r].ip), 0),
+					width, fmtaddr(htonl(session[s].ip), 1)) + 2;
+
+				p += p[1];
 			}
+		}
 
-			*p = 22;	// Framed-Route
-			p[1] = sprintf((char *) p + 2, "%s/%d %s 1",
-				fmtaddr(htonl(session[s].route[r].ip), 0),
-				width, fmtaddr(htonl(session[s].ip), 1)) + 2;
+		if (session[s].session_timeout)
+		{
+			*p = 27;		// Session-Timeout
+			p[1] = 6;
+			*(uint32_t *) (p + 2) = htonl(session[s].session_timeout);
+			p += p[1];
+		}
 
+		if (session[s].idle_timeout)
+		{
+			*p = 28;		// Idle-Timeout
+			p[1] = 6;
+			*(uint32_t *) (p + 2) = htonl(session[s].idle_timeout);
+			p += p[1];
+		}
+
+		if (*session[s].called)
+		{
+			*p = 30;                // called
+			p[1] = strlen(session[s].called) + 2;
+			strcpy((char *) p + 2, session[s].called);
+			p += p[1];
+		}
+
+		if (*session[s].calling)
+		{
+			*p = 31;                // calling
+			p[1] = strlen(session[s].calling) + 2;
+			strcpy((char *) p + 2, session[s].calling);
 			p += p[1];
 		}
 	}
-	if (*session[s].called)
-	{
-		*p = 30;                // called
-		p[1] = strlen(session[s].called) + 2;
-		strcpy((char *) p + 2, session[s].called);
-		p += p[1];
-	}
-	if (*session[s].calling)
-	{
-		*p = 31;                // calling
-		p[1] = strlen(session[s].calling) + 2;
-		strcpy((char *) p + 2, session[s].calling);
-		p += p[1];
-	}
+
 	// NAS-IP-Address
 	*p = 4;
 	p[1] = 6;
@@ -519,7 +599,7 @@ void processrad(uint8_t *buf, int len, char socket_index)
 			if (radius[r].chap)
 			{
 				// CHAP
-				uint8_t *p = makeppp(b, sizeof(b), 0, 0, s, t, PPPCHAP);
+				uint8_t *p = makeppp(b, sizeof(b), 0, 0, s, t, PPPCHAP, 0, 0, 0);
 				if (!p) return;	// Abort!
 
 				*p = (r_code == AccessAccept) ? 3 : 4;     // ack/nak
@@ -533,7 +613,7 @@ void processrad(uint8_t *buf, int len, char socket_index)
 			else
 			{
 				// PAP
-				uint8_t *p = makeppp(b, sizeof(b), 0, 0, s, t, PPPPAP);
+				uint8_t *p = makeppp(b, sizeof(b), 0, 0, s, t, PPPPAP, 0, 0, 0);
 				if (!p) return;		// Abort!
 
 				// ack/nak
@@ -555,6 +635,35 @@ void processrad(uint8_t *buf, int len, char socket_index)
 				uint8_t *e = buf + len;
 				for (; p + 2 <= e && p[1] && p + p[1] <= e; p += p[1])
 				{
+					if (*p == 26 && p[1] >= 7)
+					{
+						// Vendor-Specific Attribute
+						uint32_t vendor = ntohl(*(int *)(p + 2));
+						uint8_t attrib = *(p + 6);
+						int attrib_length = *(p + 7) - 2;
+
+						LOG(4, s, session[s].tunnel, "   Radius reply contains Vendor-Specific.  Vendor=%u Attrib=%u Length=%d\n", vendor, attrib, attrib_length);
+						if (vendor == 9 && attrib == 1) // Cisco-AVPair
+						{
+							if (attrib_length < 0) continue;
+							LOG(3, s, session[s].tunnel, "      Cisco-AVPair value: %.*s\n",
+								attrib_length, p + 8);
+
+							handle_avpair(s, p + 8, attrib_length);
+							continue;
+						}
+						else if (vendor == 529 && attrib >= 135 && attrib <= 136) // Ascend
+						{
+							// handle old-format ascend DNS attributes below
+						    	p += 6;
+						}
+						else
+						{
+							LOG(3, s, session[s].tunnel, "      Unknown vendor-specific\n");
+							continue;
+						}
+					}
+
 					if (*p == 8)
 					{
 						// Framed-IP-Address
@@ -668,27 +777,19 @@ void processrad(uint8_t *buf, int len, char socket_index)
 							ip_filters[f].used++;
 						}
 					}
-					else if (*p == 26 && p[1] >= 7)
+					else if (*p == 27)
 					{
-						// Vendor-Specific Attribute
-						int vendor = ntohl(*(int *)(p + 2));
-						char attrib = *(p + 6);
-						int attrib_length = *(p + 7) - 2;
-
-						LOG(3, s, session[s].tunnel, "   Radius reply contains Vendor-Specific.  Vendor=%d Attrib=%d Length=%d\n", vendor, attrib, attrib_length);
-						if (vendor != 9 || attrib != 1)
-						{
-							LOG(3, s, session[s].tunnel, "      Unknown vendor-specific\n");
-							continue;
-						}
-
-						if (attrib_length > 0)
-						{
-							LOG(3, s, session[s].tunnel, "      Cisco-AVPair value: %.*s\n",
-								attrib_length, p + 8);
-
-							handle_avpair(s, p + 8, attrib_length);
-						}
+					    	// Session-Timeout
+					    	if (p[1] < 6) continue;
+						session[s].session_timeout = ntohl(*(uint32_t *)(p + 2));
+						LOG(3, s, session[s].tunnel, "   Radius reply contains Session-Timeout = %u\n", session[s].session_timeout);
+					}
+					else if (*p == 28)
+					{
+					    	// Idle-Timeout
+					    	if (p[1] < 6) continue;
+						session[s].idle_timeout = ntohl(*(uint32_t *)(p + 2));
+						LOG(3, s, session[s].tunnel, "   Radius reply contains Idle-Timeout = %u\n", session[s].idle_timeout);
 					}
 					else if (*p == 99)
 					{
@@ -785,7 +886,7 @@ void radiusretry(uint16_t r)
 
 extern int daefd;
 
-void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen)
+void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen, struct in_addr *local)
 {
 	int i, r_code, r_id, length, attribute_length;
 	uint8_t *packet, attribute;
@@ -994,7 +1095,7 @@ void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen)
 		LOG(3, s, t, "    DAE Disconnect %d (%s)\n", s, session[s].user);
 		r_code = DisconnectACK;
 
-		sessionshutdown(s, "Requested by PoD", 3, 0); // disconnect session
+		sessionshutdown(s, "Requested by PoD", CDN_ADMIN_DISC, TERM_ADMIN_RESET); // disconnect session
 		break;
 
 	case CoARequest: // Change of Authorization
@@ -1063,6 +1164,6 @@ void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen)
 	LOG(3, 0, 0, "Sending DAE %s, id=%d\n", radius_code(r_code), r_id);
 
 	// send DAE response
-	if (sendto(daefd, buf, len, MSG_DONTWAIT | MSG_NOSIGNAL, (struct sockaddr *) addr, alen) < 0)
+	if (sendtofrom(daefd, buf, len, MSG_DONTWAIT | MSG_NOSIGNAL, (struct sockaddr *) addr, alen, local) < 0)
 		LOG(0, 0, 0, "Error sending DAE response packet: %s\n", strerror(errno));
 }