Apply patch from Geoffrey D. Bennett to fix handle RADIUS Class attribute.

[l2tpns.git] / radius.c

diff --git a/radius.c b/radius.c
index 7dcaf67..f9f7263 100644 (file)
--- a/radius.c
+++ b/radius.c
@@ -1,7 +1,5 @@
 // L2TPNS Radius Stuff
 
 // L2TPNS Radius Stuff
 

-char const *cvs_id_radius = "$Id: radius.c,v 1.41 2005-08-31 12:41:09 bodea Exp $";
-

 #include <time.h>
 #include <stdio.h>
 #include <sys/types.h>
 #include <time.h>
 #include <stdio.h>
 #include <sys/types.h>


@@ -27,10 +25,43 @@ extern configt *config;
 extern int *radfds;
 extern ip_filtert *ip_filters;
 
 extern int *radfds;
 extern ip_filtert *ip_filters;
 

+static const hasht zero;
+
+static void calc_auth(const void *buf, size_t len, const uint8_t *in, uint8_t *out)
+{
+       MD5_CTX ctx;
+
+       MD5_Init(&ctx);
+       MD5_Update(&ctx, (void *)buf, 4); // code, id, length
+       MD5_Update(&ctx, (void *)in, 16); // auth
+       MD5_Update(&ctx, (void *)(buf + 20), len - 20);
+       MD5_Update(&ctx, config->radiussecret, strlen(config->radiussecret));
+       MD5_Final(out, &ctx);
+}
+

 // Set up socket for radius requests
 void initrad(void)
 {
        int i;
 // Set up socket for radius requests
 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++)
        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++)


@@ -39,6 +70,27 @@ 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);
                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);
+               }

        }
 }
 
        }
 }
 


@@ -123,7 +175,7 @@ void radiussend(uint16_t r, uint8_t state)
                return;
        }
 
                return;
        }
 

-       if (state != RADIUSAUTH && !config->radius_accounting)
+       if (state != RADIUSAUTH && state != RADIUSJUSTAUTH && !config->radius_accounting)

        {
                // Radius accounting is turned off
                radiusclear(r, s);
        {
                // Radius accounting is turned off
                radiusclear(r, s);


@@ -143,8 +195,8 @@ void radiussend(uint16_t r, uint8_t state)
        {
                if (s)
                {
        {
                if (s)
                {

-                       if (state == RADIUSAUTH)
-                               sessionshutdown(s, "RADIUS timeout.", 3, 0);
+                       if (state == RADIUSAUTH || state == RADIUSJUSTAUTH)
+                               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",
                        else
                        {
                                LOG(1, s, session[s].tunnel, "RADIUS timeout, but in state %s so don't timeout session\n",


@@ -165,6 +217,7 @@ void radiussend(uint16_t r, uint8_t state)
        switch (state)
        {
                case RADIUSAUTH:
        switch (state)
        {
                case RADIUSAUTH:

+               case RADIUSJUSTAUTH:

                        b[0] = AccessRequest;               // access request
                        break;
                case RADIUSSTART:
                        b[0] = AccessRequest;               // access request
                        break;
                case RADIUSSTART:


@@ -185,7 +238,7 @@ void radiussend(uint16_t r, uint8_t state)
                strcpy((char *) p + 2, session[s].user);
                p += p[1];
        }
                strcpy((char *) p + 2, session[s].user);
                p += p[1];
        }

-       if (state == RADIUSAUTH)
+       if (state == RADIUSAUTH || state == RADIUSJUSTAUTH)

        {
                if (radius[r].chap)
                {
        {
                if (radius[r].chap)
                {


@@ -234,8 +287,8 @@ void radiussend(uint16_t r, uint8_t state)
                        p += p[1];
                }
        }
                        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
                *p = 40;        // accounting type
                p[1] = 6;
                *(uint32_t *) (p + 2) = htonl(state - RADIUSSTART + 1); // start=1, stop=2, interim=3


@@ -290,49 +343,123 @@ void radiussend(uint16_t r, uint8_t state)
                                p[1] = 6;
                                *(uint32_t *) (p + 2) = htonl(session[s].cout_wrap);
                                p += p[1];
                                p[1] = 6;
                                *(uint32_t *) (p + 2) = htonl(session[s].cout_wrap);
                                p += p[1];

-                       }

 
 

-                       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((char *) p + 8, "intercept=%s:%d",
-                                       fmtaddr(session[s].snoop_ip, 0), session[s].snoop_port);
+                               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];
+                                       }
+                               }
+                       }

 
 

-                               p[1] = p[7] + 6;
+                       if (session[s].classlen) {
+                               *p = 25;        // class
+                               p[1] = session[s].classlen + 2;
+                               memcpy(p + 2, session[s].class, session[s].classlen);

                                p += p[1];
                        }
                                p += p[1];
                        }

+
+                       {
+                               struct param_radius_account acct = { &tunnel[session[s].tunnel], &session[s], &p };
+                               run_plugins(PLUGIN_RADIUS_ACCOUNT, &acct);
+                       }

                }
        }
                }
        }

+

        if (s)
        {
        if (s)
        {

-               *p = 5; // NAS-Port
+               *p = 5;         // NAS-Port

                p[1] = 6;
                *(uint32_t *) (p + 2) = htonl(s);
                p += p[1];
                p[1] = 6;
                *(uint32_t *) (p + 2) = htonl(s);
                p += p[1];

-       }
-       if (s && session[s].ip)
-       {
-               *p = 8;                 // Framed-IP-Address
+
+               *p = 6;         // Service-Type

                p[1] = 6;
                p[1] = 6;

-               *(uint32_t *) (p + 2) = htonl(session[s].ip);
-               p += p[1];
-       }
-       if (*session[s].called)
-       {
-               *p = 30;                // called
-               p[1] = strlen(session[s].called) + 2;
-               strcpy((char *) p + 2, session[s].called);
+               *(uint32_t *) (p + 2) = htonl((state == RADIUSJUSTAUTH ? 8 : 2)); // Authenticate only or Framed-User respectevily

                p += p[1];
                p += p[1];

-       }
-       else if (*session[s].calling)
-       {
-               *p = 31;                // calling
-               p[1] = strlen(session[s].calling) + 2;
-               strcpy((char *) p + 2, session[s].calling);
+                  
+               *p = 7;         // Framed-Protocol
+               p[1] = htonl((state == RADIUSJUSTAUTH ? 0 : 6));
+               *(uint32_t *) (p + 2) = htonl((state == RADIUSJUSTAUTH ? 0 : 1)); // PPP

                p += p[1];
                p += p[1];

+
+               if (session[s].ip)
+               {
+                       *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 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].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];
+               }

        }
        }

+

        // NAS-IP-Address
        *p = 4;
        p[1] = 6;
        // NAS-IP-Address
        *p = 4;
        p[1] = 6;


@@ -341,20 +468,11 @@ void radiussend(uint16_t r, uint8_t state)
 
        // All AVpairs added
        *(uint16_t *) (b + 2) = htons(p - b);
 
        // All AVpairs added
        *(uint16_t *) (b + 2) = htons(p - b);

-       if (state != RADIUSAUTH)
+       if (state != RADIUSAUTH && state != RADIUSJUSTAUTH)

        {
        {

-           // Build auth for accounting packet
-           uint8_t z[16] = {0};
-           uint8_t hash[16] = {0};
-           MD5_CTX ctx;
-           MD5_Init(&ctx);
-           MD5_Update(&ctx, b, 4);
-           MD5_Update(&ctx, z, 16);
-           MD5_Update(&ctx, b + 20, (p - b) - 20);
-           MD5_Update(&ctx, config->radiussecret, strlen(config->radiussecret));
-           MD5_Final(hash, &ctx);
-           memcpy(b + 4, hash, 16);
-           memcpy(radius[r].auth, hash, 16);
+               // Build auth for accounting packet
+               calc_auth(b, p - b, zero, b + 4);
+               memcpy(radius[r].auth, b + 4, 16);

        }
        memset(&addr, 0, sizeof(addr));
        addr.sin_family = AF_INET;
        }
        memset(&addr, 0, sizeof(addr));
        addr.sin_family = AF_INET;


@@ -363,7 +481,7 @@ void radiussend(uint16_t r, uint8_t state)
                // get radius port
                uint16_t port = config->radiusport[(radius[r].try - 1) % config->numradiusservers];
                // assume RADIUS accounting port is the authentication port +1
                // get radius port
                uint16_t port = config->radiusport[(radius[r].try - 1) % config->numradiusservers];
                // assume RADIUS accounting port is the authentication port +1

-               addr.sin_port = htons((state == RADIUSAUTH) ? port : port+1);
+               addr.sin_port = htons((state == RADIUSAUTH || state == RADIUSJUSTAUTH) ? port : port+1);

        }
 
        LOG_HEX(5, "RADIUS Send", b, (p - b));
        }
 
        LOG_HEX(5, "RADIUS Send", b, (p - b));


@@ -415,7 +533,6 @@ static void handle_avpair(sessionidt s, uint8_t *avp, int len)
 void processrad(uint8_t *buf, int len, char socket_index)
 {
        uint8_t b[MAXETHER];
 void processrad(uint8_t *buf, int len, char socket_index)
 {
        uint8_t b[MAXETHER];

-       MD5_CTX ctx;

        uint16_t r;
        sessionidt s;
        tunnelidt t = 0;
        uint16_t r;
        sessionidt s;
        tunnelidt t = 0;


@@ -447,19 +564,14 @@ void processrad(uint8_t *buf, int len, char socket_index)
                LOG(1, s, session[s].tunnel, "   Unexpected RADIUS response\n");
                return;
        }
                LOG(1, s, session[s].tunnel, "   Unexpected RADIUS response\n");
                return;
        }

-       if (radius[r].state != RADIUSAUTH && radius[r].state != RADIUSSTART
+       if (radius[r].state != RADIUSAUTH && radius[r].state != RADIUSJUSTAUTH && radius[r].state != RADIUSSTART

            && radius[r].state != RADIUSSTOP && radius[r].state != RADIUSINTERIM)
        {
                LOG(1, s, session[s].tunnel, "   Unexpected RADIUS response\n");
                return;
        }
        t = session[s].tunnel;
            && radius[r].state != RADIUSSTOP && radius[r].state != RADIUSINTERIM)
        {
                LOG(1, s, session[s].tunnel, "   Unexpected RADIUS response\n");
                return;
        }
        t = session[s].tunnel;

-       MD5_Init(&ctx);
-       MD5_Update(&ctx, buf, 4);
-       MD5_Update(&ctx, radius[r].auth, 16);
-       MD5_Update(&ctx, buf + 20, len - 20);
-       MD5_Update(&ctx, config->radiussecret, strlen(config->radiussecret));
-       MD5_Final(hash, &ctx);
+       calc_auth(buf, len, radius[r].auth, hash);

        do {
                if (memcmp(hash, buf + 4, 16))
                {
        do {
                if (memcmp(hash, buf + 4, 16))
                {


@@ -467,7 +579,7 @@ void processrad(uint8_t *buf, int len, char socket_index)
                        return; // Do nothing. On timeout, it will try the next radius server.
                }
 
                        return; // Do nothing. On timeout, it will try the next radius server.
                }
 

-               if ((radius[r].state == RADIUSAUTH && r_code != AccessAccept && r_code != AccessReject) ||
+               if (((radius[r].state == RADIUSAUTH ||radius[r].state == RADIUSJUSTAUTH) && r_code != AccessAccept && r_code != AccessReject) ||

                        ((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));
                        ((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));


@@ -475,7 +587,7 @@ void processrad(uint8_t *buf, int len, char socket_index)
                                // care off finishing the radius session if that's really correct.
                }
 
                                // care off finishing the radius session if that's really correct.
                }
 

-               if (radius[r].state == RADIUSAUTH)
+               if (radius[r].state == RADIUSAUTH || radius[r].state == RADIUSJUSTAUTH)

                {
                        // run post-auth plugin
                        struct param_post_auth packet = {
                {
                        // run post-auth plugin
                        struct param_post_auth packet = {


@@ -493,7 +605,7 @@ void processrad(uint8_t *buf, int len, char socket_index)
                        if (radius[r].chap)
                        {
                                // CHAP
                        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
                                if (!p) return; // Abort!
 
                                *p = (r_code == AccessAccept) ? 3 : 4;     // ack/nak


@@ -507,7 +619,7 @@ void processrad(uint8_t *buf, int len, char socket_index)
                        else
                        {
                                // PAP
                        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
                                if (!p) return;         // Abort!
 
                                // ack/nak


@@ -529,6 +641,35 @@ 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])
                                {
                                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
                                        if (*p == 8)
                                        {
                                                // Framed-IP-Address


@@ -642,27 +783,21 @@ void processrad(uint8_t *buf, int len, char socket_index)
                                                        ip_filters[f].used++;
                                                }
                                        }
                                                        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);
+                                               if(!session[s].session_timeout && config->kill_timedout_sessions)
+                                                        sessionshutdown(s, "Session timeout is zero", CDN_ADMIN_DISC, 0);
+                                       }
+                                       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)
                                        {
                                        }
                                        else if (*p == 99)
                                        {


@@ -690,6 +825,15 @@ void processrad(uint8_t *buf, int len, char socket_index)
                                                        session[s].ipv6prefixlen = prefixlen;
                                                }
                                        }
                                                        session[s].ipv6prefixlen = prefixlen;
                                                }
                                        }

+                                       else if (*p == 25)
+                                       {
+                                               // Class
+                                               if (p[1] < 3) continue;
+                                               session[s].classlen = p[1] - 2;
+                                               if (session[s].classlen > MAXCLASS)
+                                                       session[s].classlen = MAXCLASS;
+                                               memcpy(session[s].class, p + 2, session[s].classlen);
+                                       }

                                }
                        }
                        else if (r_code == AccessReject)
                                }
                        }
                        else if (r_code == AccessReject)


@@ -742,6 +886,7 @@ void radiusretry(uint16_t r)
                        sendchap(s, t);
                        break;
                case RADIUSAUTH:        // sending auth to RADIUS server
                        sendchap(s, t);
                        break;
                case RADIUSAUTH:        // sending auth to RADIUS server

+               case RADIUSJUSTAUTH:    // sending auth to RADIUS server

                case RADIUSSTART:       // sending start accounting to RADIUS server
                case RADIUSSTOP:        // sending stop accounting to RADIUS server
                case RADIUSINTERIM:     // sending interim accounting to RADIUS server
                case RADIUSSTART:       // sending start accounting to RADIUS server
                case RADIUSSTOP:        // sending stop accounting to RADIUS server
                case RADIUSINTERIM:     // sending interim accounting to RADIUS server


@@ -759,11 +904,11 @@ void radiusretry(uint16_t r)
 
 extern int daefd;
 
 
 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;
 {
        int i, r_code, r_id, length, attribute_length;

-       uint8_t vector[16], hash[16], *packet, attribute;
-       MD5_CTX ctx;
+       uint8_t *packet, attribute;
+       hasht hash;

        char username[MAXUSER] = "";
        in_addr_t nas = 0;
        in_addr_t ip = 0;
        char username[MAXUSER] = "";
        in_addr_t nas = 0;
        in_addr_t ip = 0;


@@ -808,17 +953,8 @@ void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen)
        LOG(3, 0, 0, "Received DAE %s, id %d\n", radius_code(r_code), r_id);
 
        // check authenticator
        LOG(3, 0, 0, "Received DAE %s, id %d\n", radius_code(r_code), r_id);
 
        // check authenticator

-       memcpy(vector, buf + 4, 16);
-       memset(buf + 4, 0, 16);
-
-       i = strlen(config->radiussecret);
-       if (i > 16) i = 16;
-
-       MD5_Init(&ctx);
-       MD5_Update(&ctx, buf, len);
-       MD5_Update(&ctx, config->radiussecret, i);
-       MD5_Final(hash, &ctx);
-       if (memcmp(hash, vector, 16) != 0)
+       calc_auth(buf, len, zero, hash);
+       if (memcmp(hash, buf + 4, 16) != 0)

        {
                LOG(1, 0, 0, "Incorrect vector in DAE request (wrong secret in radius config?)\n");
                return;
        {
                LOG(1, 0, 0, "Incorrect vector in DAE request (wrong secret in radius config?)\n");
                return;


@@ -977,7 +1113,7 @@ 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;
 
                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
                break;
 
        case CoARequest: // Change of Authorization


@@ -1024,10 +1160,9 @@ void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen)
        packet = buf;
        *packet++ = r_code;
        *packet++ = r_id;
        packet = buf;
        *packet++ = r_code;
        *packet++ = r_id;

-       packet += 2;
-       memset(packet, 0, 16);
-       packet += 16;
-       len = 20;
+       // skip len + auth
+       packet += 2 + 16;
+       len = packet - buf;

 
        // add attributes
        if (error)
 
        // add attributes
        if (error)


@@ -1042,18 +1177,11 @@ void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen)
        *((uint16_t *)(buf + 2)) = htons(len);
 
        // make vector
        *((uint16_t *)(buf + 2)) = htons(len);
 
        // make vector

-       i = strlen(config->radiussecret);
-       if (i > 16) i = 16;
-
-       MD5_Init(&ctx);
-       MD5_Update(&ctx, buf, len);
-       MD5_Update(&ctx, config->radiussecret, i);
-       MD5_Final(hash, &ctx);
-       memcpy(buf + 4, hash, 16);
+       calc_auth(buf, len, hash, buf + 4);

 
        LOG(3, 0, 0, "Sending DAE %s, id=%d\n", radius_code(r_code), r_id);
 
        // send DAE response
 
        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));
 }
                LOG(0, 0, 0, "Error sending DAE response packet: %s\n", strerror(errno));
 }