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[l2tpns.git] / radius.c
diff --git a/radius.c b/radius.c
index 1e09792..a9fc7e6 100644 (file)
--- a/radius.c
+++ b/radius.c
@@ -1,6 +1,6 @@
 // L2TPNS Radius Stuff
 
-char const *cvs_id_radius = "$Id: radius.c,v 1.25 2005-03-10 06:16:05 bodea Exp $";
+char const *cvs_id_radius = "$Id: radius.c,v 1.30 2005-05-07 08:17:26 bodea Exp $";
 
 #include <time.h>
 #include <stdio.h>
@@ -42,7 +42,7 @@ void initrad(void)
 
 void radiusclear(uint16_t r, sessionidt s)
 {
-       if (s) session[s].radius = 0;
+       if (s) sess_local[s].radius = 0;
        memset(&radius[r], 0, sizeof(radius[r])); // radius[r].state = RADIUSNULL;
 }
 
@@ -69,7 +69,7 @@ static uint16_t get_free_radius()
 
 uint16_t radiusnew(sessionidt s)
 {
-       uint16_t r = session[s].radius;
+       uint16_t r = sess_local[s].radius;
 
        /* re-use */
        if (r)
@@ -86,11 +86,13 @@ uint16_t radiusnew(sessionidt s)
        };
 
        memset(&radius[r], 0, sizeof(radius[r]));
-       session[s].radius = r;
+       sess_local[s].radius = r;
        radius[r].session = s;
        radius[r].state = RADIUSWAIT;
        radius[r].retry = TIME + 1200; // Wait at least 120 seconds to re-claim this.
 
+       random_data(radius[r].auth, sizeof(radius[r].auth));
+
        LOG(3, s, session[s].tunnel, "Allocated radius %d\n", r);
        return r;
 }
@@ -140,7 +142,7 @@ void radiussend(uint16_t r, uint8_t state)
                if (s)
                {
                        if (state == RADIUSAUTH)
-                               sessionshutdown(s, "RADIUS timeout", 3, 0);
+                               sessionshutdown(s, "RADIUS timeout.", 3, 0);
                        else
                        {
                                LOG(1, s, session[s].tunnel, "RADIUS timeout, but in state %s so don't timeout session\n",
@@ -165,6 +167,7 @@ void radiussend(uint16_t r, uint8_t state)
                        break;
                case RADIUSSTART:
                case RADIUSSTOP:
+               case RADIUSINTERIM:
                        b[0] = 4;               // accounting request
                        break;
                default:
@@ -229,20 +232,28 @@ void radiussend(uint16_t r, uint8_t state)
                        p += p[1];
                }
        }
-       else if (state == RADIUSSTART || state == RADIUSSTOP)
+       else if (state == RADIUSSTART || state == RADIUSSTOP || state == RADIUSINTERIM)
        {                          // accounting
                *p = 40;                // accounting type
                p[1] = 6;
-               *(uint32_t *) (p + 2) = htonl((state == RADIUSSTART) ? 1 : 2);
+               *(uint32_t *) (p + 2) = htonl(state - RADIUSSTART + 1); // start=1, stop=2, interim=3
                p += p[1];
                if (s)
                {
                        *p = 44;           // session ID
                        p[1] = 18;
-                       sprintf(p + 2, "%08X%08X", session[s].id, session[s].opened);
+                       sprintf(p + 2, "%08X%08X", session[s].unique_id, session[s].opened);
                        p += p[1];
-                       if (state == RADIUSSTOP)
-                       {                // stop
+                       if (state == RADIUSSTART)
+                       {                // start
+                               *p = 41;      // delay
+                               p[1] = 6;
+                               *(uint32_t *) (p + 2) = htonl(time(NULL) - session[s].opened);
+                               p += p[1];
+                               sess_local[s].last_interim = time_now; // Setup "first" Interim
+                       }
+                       else
+                       {                // stop, interim
                                *p = 42;      // input octets
                                p[1] = 6;
                                *(uint32_t *) (p + 2) = htonl(session[s].cin);
@@ -264,11 +275,16 @@ void radiussend(uint16_t r, uint8_t state)
                                *(uint32_t *) (p + 2) = htonl(session[s].pout);
                                p += p[1];
                        }
-                       else
-                       {                // start
-                               *p = 41;      // delay
-                               p[1] = 6;
-                               *(uint32_t *) (p + 2) = htonl(time(NULL) - session[s].opened);
+
+                       if (session[s].snoop_ip && session[s].snoop_port)
+                       {
+                               *p = 26;                                // vendor-specific
+                               *(uint32_t *) (p + 2) = htonl(9);       // Cisco
+                               p[6] = 1;                               // Cisco-Avpair
+                               p[7] = 2 + sprintf(p + 8, "intercept=%s:%d",
+                                       fmtaddr(session[s].snoop_ip, 0), session[s].snoop_port);
+
+                               p[1] = p[7] + 6;
                                p += p[1];
                        }
                }
@@ -381,7 +397,8 @@ void processrad(uint8_t *buf, int len, char socket_index)
                LOG(1, s, session[s].tunnel, "   Unexpected RADIUS response\n");
                return;
        }
-       if (radius[r].state != RADIUSAUTH && radius[r].state != RADIUSSTART && radius[r].state != RADIUSSTOP)
+       if (radius[r].state != RADIUSAUTH && radius[r].state != RADIUSSTART
+           && radius[r].state != RADIUSSTOP && radius[r].state != RADIUSINTERIM)
        {
                LOG(1, s, session[s].tunnel, "   Unexpected RADIUS response\n");
                return;
@@ -401,7 +418,7 @@ void processrad(uint8_t *buf, int len, char socket_index)
                }
 
                if ((radius[r].state == RADIUSAUTH && r_code != AccessAccept && r_code != AccessReject) ||
-                       ((radius[r].state == RADIUSSTART || radius[r].state == RADIUSSTOP) && r_code != AccountingResponse))
+                       ((radius[r].state == RADIUSSTART || radius[r].state == RADIUSSTOP || radius[r].state == RADIUSINTERIM) && r_code != AccountingResponse))
                {
                        LOG(1, s, session[s].tunnel, "   Unexpected RADIUS response %s\n", radius_code(r_code));
                        return; // We got something we didn't expect. Let the timeouts take
@@ -581,7 +598,7 @@ void processrad(uint8_t *buf, int len, char socket_index)
                                                // Vendor-Specific Attribute
                                                int vendor = ntohl(*(int *)(p + 2));
                                                char attrib = *(p + 6);
-                                               char attrib_length = *(p + 7) - 2;
+                                               int attrib_length = *(p + 7) - 2;
                                                char *avpair, *value, *key, *newp;
 
                                                LOG(3, s, session[s].tunnel, "   Radius reply contains Vendor-Specific.  Vendor=%d Attrib=%d Length=%d\n", vendor, attrib, attrib_length);
@@ -697,24 +714,27 @@ void radiusretry(uint16_t r)
        radius[r].retry = backoff(radius[r].try + 1);
        switch (radius[r].state)
        {
-               case RADIUSCHAP:           // sending CHAP down PPP
+               case RADIUSCHAP:        // sending CHAP down PPP
                        sendchap(t, s);
                        break;
                case RADIUSIPCP:
-                       sendipcp(t, s);         // send IPCP
+                       sendipcp(t, s); // send IPCP
                        break;
-               case RADIUSAUTH:           // sending auth to RADIUS server
+               case RADIUSAUTH:        // sending auth to RADIUS server
                        radiussend(r, RADIUSAUTH);
                        break;
-               case RADIUSSTART:          // sending start accounting to RADIUS server
+               case RADIUSSTART:       // sending start accounting to RADIUS server
                        radiussend(r, RADIUSSTART);
                        break;
-               case RADIUSSTOP:           // sending stop accounting to RADIUS server
+               case RADIUSSTOP:        // sending stop accounting to RADIUS server
                        radiussend(r, RADIUSSTOP);
                        break;
+               case RADIUSINTERIM:     // sending interim accounting to RADIUS server
+                       radiussend(r, RADIUSINTERIM);
+                       break;
                default:
-               case RADIUSNULL:           // Not in use
-               case RADIUSWAIT:           // waiting timeout before available, in case delayed reply from RADIUS server
+               case RADIUSNULL:        // Not in use
+               case RADIUSWAIT:        // waiting timeout before available, in case delayed reply from RADIUS server
                        // free up RADIUS task
                        radiusclear(r, s);
                        LOG(3, s, session[s].tunnel, "Freeing up radius session %d\n", r);
for cloning use: "git clone git://git.sameswireless.fr/l2tpns.git" ; For add to your sources.list: "deb http://package.sameswifi.fr/ jessie main"