kludge around problem with Netgear DM602 authentication

[l2tpns.git] / radius.c

diff --git a/radius.c b/radius.c
index 55aa6cb..dd8a3e6 100644 (file)
--- a/radius.c
+++ b/radius.c
@@ -1,6 +1,6 @@
 // L2TPNS Radius Stuff
 
-char const *cvs_id_radius = "$Id: radius.c,v 1.44 2005/10/11 09:04:53 bodea Exp $";
+char const *cvs_id_radius = "$Id: radius.c,v 1.50 2006/04/27 09:53:50 bodea Exp $";
 
 #include <time.h>
 #include <stdio.h>
@@ -158,7 +158,7 @@ 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 +248,8 @@ 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
@@ -305,19 +305,47 @@ void radiussend(uint16_t r, uint8_t state)
                                *(uint32_t *) (p + 2) = htonl(session[s].cout_wrap);
                                p += p[1];
 
+                               if (state == RADIUSSTOP && radius[r].term_cause)
                                {
-                                       struct param_radius_account acct = { &tunnel[session[s].tunnel], &session[s], &p };
-                                       run_plugins(PLUGIN_RADIUS_ACCOUNT, &acct);
+                                       *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];
+                                       }
                                }
                        }
+
+                       {
+                               struct param_radius_account acct = { &tunnel[session[s].tunnel], &session[s], &p };
+                               run_plugins(PLUGIN_RADIUS_ACCOUNT, &acct);
+                       }
                }
        }
        if (s)
        {
-               *p = 5; // NAS-Port
+               *p = 5;         // NAS-Port
                p[1] = 6;
                *(uint32_t *) (p + 2) = htonl(s);
                p += p[1];
+
+               *p = 6;         // Service-Type
+               p[1] = 6;
+               *(uint32_t *) (p + 2) = htonl(2); // Framed-User
+               p += p[1];
+                  
+               *p = 7;         // Framed-Protocol
+               p[1] = 6;
+               *(uint32_t *) (p + 2) = htonl(1); // PPP
+               p += p[1];
        }
        if (s && session[s].ip)
        {
@@ -326,6 +354,30 @@ void radiussend(uint16_t r, uint8_t state)
                *(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++)
+               {
+                       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];
+               }
+       }
        if (*session[s].called)
        {
                *p = 30;                // called
@@ -485,7 +537,7 @@ 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
@@ -499,7 +551,7 @@ 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
@@ -541,6 +593,19 @@ void processrad(uint8_t *buf, int len, char socket_index)
                                                LOG(3, s, session[s].tunnel, "   Radius reply contains primary DNS address %s\n",
                                                        fmtaddr(htonl(session[s].dns1), 0));
                                        }
+                                       else if (*p == 27)
+                                       {
+                                               // Session timeout
+                                               if (p[1] < 6) {
+                                                       LOG(2, s, session[s].tunnel, "Error: Received Session timeout with length %d < 6\n", p[1]);
+                                                       continue;
+                                               }
+
+                                               session[s].timeout = ntohl(*(uint32_t *) (p + 2));
+                                               LOG(3, s, session[s].tunnel, "   Radius reply contains Session timeout %d\n", session[s].timeout);
+                                               if (!session[s].timeout)
+                                                       sessionshutdown(s, "Session timeout is zero", CDN_ADMIN_DISC, TERM_SESSION_TIMEOUT);
+                                       }
                                        else if (*p == 136)
                                        {
                                                // DNS address
@@ -751,7 +816,7 @@ 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;
@@ -960,7 +1025,7 @@ 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
@@ -1029,6 +1094,6 @@ 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));
 }