add lock_pages option

[l2tpns.git] / radius.c

diff --git a/radius.c b/radius.c
index 2a2db48..0f60298 100644 (file)
--- a/radius.c
+++ b/radius.c
@@ -1,5 +1,6 @@
 // L2TPNS Radius Stuff
-// $Id: radius.c,v 1.4 2004/06/23 03:52:24 fred_nerk Exp $
+
+char const *cvs_id_radius = "$Id: radius.c,v 1.8 2004/07/11 07:57:35 bodea Exp $";
 
 #include <time.h>
 #include <stdio.h>
@@ -45,7 +46,7 @@ void initrad(void)
        for (i = 0; i < config->num_radfds; i++)
        {
                int flags;
-               if (!radfds[i]) radfds[i] = socket(AF_INET, SOCK_DGRAM, UDP);
+               if (!radfds[i]) radfds[i] = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
                flags = fcntl(radfds[i], F_GETFL, 0);
                fcntl(radfds[i], F_SETFL, flags | O_NONBLOCK);
        }
@@ -57,44 +58,51 @@ void radiusclear(u16 r, sessionidt s)
        memset(&radius[r], 0, sizeof(radius[r])); // radius[r].state = RADIUSNULL;
 }
 
-int next_radius_id = 1;
 
-static u16 new_radius()
+static u16 get_free_radius()
 {
-       u16 i;
-       int loops = 0;
-       for (i = next_radius_id; ; i = (i + 1) % MAXRADIUS)
+       int count;
+       static u32 next_radius_id = 0;
+
+       for (count = MAXRADIUS; count > 0 ; --count)
        {
-               if (radius[i].state == RADIUSNULL)
+               ++next_radius_id;               // Find the next ID to check.
+               if (next_radius_id >= MAXRADIUS)
+                       next_radius_id = 1;
+
+               if (radius[next_radius_id].state == RADIUSNULL)
                {
-                       next_radius_id = (next_radius_id + 1) % MAXRADIUS;
-                       return i;
-               }
-               if (next_radius_id == i)
-               {
-                       if (++loops == 2)
-                       {
-                               log(0, 0, 0, 0, "Can't find a free radius session! This is very bad!\n");
-                               return 0;
-                       }
+                       return next_radius_id;
                }
        }
+
+       log(0, 0, 0, 0, "Can't find a free radius session! This is very bad!\n");
+       return 0;
 }
 
 u16 radiusnew(sessionidt s)
 {
-       u16 r;
-       if (!(r = new_radius()))
+       u16 r = session[s].radius;
+
+       /* re-use */
+       if (r)
+       {
+               log(3, 0, s, session[s].tunnel, "Re-used radius %d\n", r);
+               return r;
+       }
+
+       if (!(r = get_free_radius()))
        {
                log(1, 0, s, session[s].tunnel, "No free RADIUS sessions\n");
                STAT(radius_overflow);
                return 0;
        };
+
        memset(&radius[r], 0, sizeof(radius[r]));
        session[s].radius = r;
        radius[r].session = s;
        radius[r].state = RADIUSWAIT;
-       radius[r].retry = config->current_time + 1200; // Wait at least 120 seconds to re-claim this.
+       radius[r].retry = TIME + 1200; // Wait at least 120 seconds to re-claim this.
 
        log(3,0,s, session[s].tunnel, "Allocated radius %d\n", r);
        return r;
@@ -109,9 +117,9 @@ void radiussend(u16 r, u8 state)
        int pl;
        u8 *p;
        sessionidt s;
-#ifdef STAT_CALLS
-       STAT(call_radiussend);
-#endif
+
+       CSTAT(call_radiussend);
+
        s = radius[r].session;
        if (!config->numradiusservers)
        {
@@ -359,9 +367,9 @@ void processrad(u8 *buf, int len, char socket_index)
        r_code = buf[0]; // First byte in radius packet.
        r_id = buf[1]; // radius reply indentifier.
 
-#ifdef STAT_CALLS
-       STAT(call_processrad);
-#endif
+
+       CSTAT(call_processrad);
+
        log_hex(5, "RADIUS Response", buf, len);
        if (len < 20 || len < ntohs(*(u16 *) (buf + 2)))
        {
@@ -394,20 +402,14 @@ void processrad(u8 *buf, int len, char socket_index)
                if (memcmp(hash, buf + 4, 16))
                {
                        log(0, 0, s, session[s].tunnel, "   Incorrect auth on RADIUS response!! (wrong secret in radius config?)\n");
-//                     radius[r].state = RADIUSWAIT;
-
                        return; // Do nothing. On timeout, it will try the next radius server.
                }
                if ((radius[r].state == RADIUSAUTH && *buf != 2 && *buf != 3) ||
                        ((radius[r].state == RADIUSSTART || radius[r].state == RADIUSSTOP) && *buf != 5))
                {
                        log(1, 0, s, session[s].tunnel, "   Unexpected RADIUS response %d\n", *buf);
-
                        return; // We got something we didn't expect. Let the timeouts take
                                // care off finishing the radius session if that's really correct.
-// old code. I think incorrect. --mo
-//                     radius[r].state = RADIUSWAIT;
-//                     break; // Finish the radius sesssion.
                }
                if (radius[r].state == RADIUSAUTH)
                {
@@ -617,9 +619,9 @@ void radiusretry(u16 r)
 {
        sessionidt s = radius[r].session;
        tunnelidt t = 0;
-#ifdef STAT_CALLS
-       STAT(call_radiusretry);
-#endif
+
+       CSTAT(call_radiusretry);
+
        if (s)
                t = session[s].tunnel;
        radius[r].retry = backoff(radius[r].try + 1);
@@ -662,6 +664,6 @@ void radius_clean()
                                || !session[radius[i].session].opened
                                || session[radius[i].session].die
                                || session[radius[i].session].tunnel == 0)
-                       radiusclear(i, 0);
+                       radiusclear(i, radius[i].session);
        }
 }