// L2TPNS Radius Stuff
-char const *cvs_id_radius = "$Id: radius.c,v 1.22 2005/01/05 14:35:01 bodea Exp $";
+char const *cvs_id_radius = "$Id: radius.c,v 1.33 2005/06/04 15:42:36 bodea Exp $";
#include <time.h>
#include <stdio.h>
void initrad(void)
{
int i;
- LOG(3, 0, 0, "Creating %d sockets for RADIUS queries\n", config->num_radfds);
- radfds = calloc(sizeof(int), config->num_radfds);
- for (i = 0; i < config->num_radfds; 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++)
{
int flags;
radfds[i] = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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;
}
uint16_t radiusnew(sessionidt s)
{
- uint16_t r = session[s].radius;
+ uint16_t r = sess_local[s].radius;
/* re-use */
if (r)
};
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;
}
radius[r].try = 0;
radius[r].state = state;
- radius[r].retry = backoff(radius[r].try++);
+ radius[r].retry = backoff(radius[r].try++) + 20; // 3s, 4s, 6s, 10s...
LOG(4, s, session[s].tunnel, "Send RADIUS id %d sock %d state %s try %d\n",
r >> RADIUS_SHIFT, r & RADIUS_MASK,
radius_state(radius[r].state), radius[r].try);
if (s)
{
if (state == RADIUSAUTH)
- sessionshutdown(s, "RADIUS timeout");
+ 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",
switch (state)
{
case RADIUSAUTH:
- b[0] = 1; // access request
+ b[0] = AccessRequest; // access request
break;
case RADIUSSTART:
case RADIUSSTOP:
- b[0] = 4; // accounting request
+ case RADIUSINTERIM:
+ b[0] = AccountingRequest; // accounting request
break;
default:
LOG(0, 0, 0, "Unknown radius state %d\n", state);
p += p[1];
}
}
- else if (state == RADIUSSTART || state == RADIUSSTOP)
- { // accounting
- *p = 40; // accounting type
+ 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 = 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
- *p = 42; // input octets
+ if (state == RADIUSSTART)
+ { // start
+ *p = 41; // delay
p[1] = 6;
- *(uint32_t *) (p + 2) = htonl(session[s].cin);
+ *(uint32_t *) (p + 2) = htonl(time(NULL) - session[s].opened);
p += p[1];
- *p = 43; // output octets
+ 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].cout);
+ *(uint32_t *) (p + 2) = htonl(session[s].cin);
p += p[1];
- *p = 46; // session time
+
+ *p = 43; // output octets
p[1] = 6;
- *(uint32_t *) (p + 2) = htonl(time(NULL) - session[s].opened);
+ *(uint32_t *) (p + 2) = htonl(session[s].cout);
p += p[1];
- *p = 47; // input packets
+ if (state == RADIUSSTOP)
+ {
+ *p = 46; // session time
+ p[1] = 6;
+ *(uint32_t *) (p + 2) = htonl(time(NULL) - session[s].opened);
+ p += p[1];
+ }
+
+ *p = 47; // input packets
p[1] = 6;
*(uint32_t *) (p + 2) = htonl(session[s].pin);
p += p[1];
- *p = 48; // output spackets
+
+ *p = 48; // output packets
p[1] = 6;
*(uint32_t *) (p + 2) = htonl(session[s].pout);
p += p[1];
- }
- else
- { // start
- *p = 41; // delay
+
+ *p = 52; // input gigawords
p[1] = 6;
- *(uint32_t *) (p + 2) = htonl(time(NULL) - session[s].opened);
+ *(uint32_t *) (p + 2) = htonl(session[s].cin_wrap);
+ p += p[1];
+
+ *p = 53; // output gigawords
+ 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(p + 8, "intercept=%s:%d",
+ fmtaddr(session[s].snoop_ip, 0), session[s].snoop_port);
+
+ p[1] = p[7] + 6;
p += p[1];
}
}
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;
}
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
session[s].ip_pool_index = -1;
LOG(3, s, session[s].tunnel, " Radius reply contains IP address %s\n",
fmtaddr(htonl(session[s].ip), 0));
+
+ if (session[s].ip == 0xFFFFFFFE)
+ session[s].ip = 0; // assign from pool
}
else if (*p == 135)
{
// 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);
} while (newp);
free(avpair);
}
+ else if (*p == 99)
+ {
+ // Framed-IPv6-Route
+ struct in6_addr r6;
+ int prefixlen;
+ uint8_t *n = p + 2;
+ uint8_t *e = p + p[1];
+ uint8_t *m = strchr(n, '/');
+
+ *m++ = 0;
+ inet_pton(AF_INET6, n, &r6);
+
+ prefixlen = 0;
+ while (m < e && isdigit(*m)) {
+ prefixlen = prefixlen * 10 + *m++ - '0';
+ }
+
+ if (prefixlen)
+ {
+ LOG(3, s, session[s].tunnel,
+ " Radius reply contains route for %s/%d\n",
+ n, prefixlen);
+ session[s].ipv6route = r6;
+ session[s].ipv6prefixlen = prefixlen;
+ }
+ }
}
}
else if (r_code == AccessReject)
{
- LOG(2, s, session[s].tunnel, " Authentication denied for %s\n", session[s].user);
-//FIXME: We should tear down the session here!
+ LOG(2, s, session[s].tunnel, " Authentication rejected for %s\n", session[s].user);
+ sessionkill(s, "Authentication rejected");
break;
}
if (s) t = session[s].tunnel;
- 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);
projects / l2tpns.git / blobdiff