// L2TPNS Radius Stuff
-// $Id: radius.c,v 1.2 2004/03/05 00:09:03 fred_nerk Exp $
+// $Id: radius.c,v 1.3 2004/05/24 04:27:11 fred_nerk Exp $
#include <time.h>
#include <stdio.h>
#include <sys/socket.h>
#include <malloc.h>
#include <string.h>
+#include <fcntl.h>
#include <arpa/inet.h>
#include <ctype.h>
#include <netinet/in.h>
extern sessiont *session;
extern tunnelt *tunnel;
extern u32 sessionid;
-extern int radfd;
extern struct Tstats *_statistics;
extern struct configt *config;
+extern int *radfds;
const char *radius_state(int state)
{
// Set up socket for radius requests
void initrad(void)
{
- radfd = socket(AF_INET, SOCK_DGRAM, UDP);
+ int i;
+ log(3, 0, 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++)
+ {
+ int flags;
+ if (!radfds[i]) radfds[i] = socket(AF_INET, SOCK_DGRAM, UDP);
+ flags = fcntl(radfds[i], F_GETFL, 0);
+ fcntl(radfds[i], F_SETFL, flags | O_NONBLOCK);
+ }
}
-void radiusclear(u8 r, sessionidt s)
+void radiusclear(u16 r, sessionidt s)
{
if (s) session[s].radius = 0;
memset(&radius[r], 0, sizeof(radius[r])); // radius[r].state = RADIUSNULL;
}
-static u8 new_radius()
+int next_radius_id = 1;
+
+static u16 new_radius()
{
- u8 i;
- for (i = 1; i < MAXRADIUS; i++)
+ u16 i;
+ int loops = 0;
+ for (i = next_radius_id; ; i = (i + 1) % MAXRADIUS)
{
if (radius[i].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;
+ }
+ }
}
- log(0, 0, 0, 0, "Can't find a free radius session! This could be bad!\n");
- return 0;
}
-u8 radiusnew(sessionidt s)
+u16 radiusnew(sessionidt s)
{
- u8 r;
+ u16 r;
if (!(r = new_radius()))
{
log(1, 0, s, session[s].tunnel, "No free RADIUS sessions\n");
}
// Send a RADIUS request
-void radiussend(u8 r, u8 state)
+void radiussend(u16 r, u8 state)
{
struct sockaddr_in addr;
u8 b[4096]; // RADIUS packet
radius[r].try = 0;
radius[r].state = state;
radius[r].retry = backoff(radius[r].try++);
- log(4, 0, s, session[s].tunnel, "Send RADIUS %d state %s try %d\n", r, radius_state(radius[r].state), radius[r].try);
+ log(4, 0, 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 (radius[r].try > config->numradiusservers * 2)
{
if (s)
{
- sessionshutdown(s, "RADIUS timeout");
+ if (state == RADIUSAUTH)
+ sessionshutdown(s, "RADIUS timeout");
+ else
+ {
+ log(1, 0, s, session[s].tunnel, "RADIUS timeout, but in state %s so don't timeout session\n",
+ radius_states[state]);
+ radiusclear(r, s);
+ }
STAT(radius_timeout);
}
else
// contruct RADIUS access request
switch (state)
{
- case RADIUSAUTH:
- b[0] = 1; // access request
- break;
- case RADIUSSTART:
- case RADIUSSTOP:
- b[0] = 4; // accounting request
- break;
- default:
- log(0, 0, 0, 0, "Unknown radius state %d\n", state);
+ case RADIUSAUTH:
+ b[0] = 1; // access request
+ break;
+ case RADIUSSTART:
+ case RADIUSSTOP:
+ b[0] = 4; // accounting request
+ break;
+ default:
+ log(0, 0, 0, 0, "Unknown radius state %d\n", state);
}
- b[1] = r; // identifier
+ b[1] = r >> RADIUS_SHIFT; // identifier
memcpy(b + 4, radius[r].auth, 16);
p = b + 20;
if (s)
addr.sin_port = htons((state == RADIUSAUTH) ? RADPORT : RADAPORT);
log_hex(5, "RADIUS Send", b, (p - b));
- sendto(radfd, b, p - b, 0, (void *) &addr, sizeof(addr));
+ sendto(radfds[r & RADIUS_MASK], b, p - b, 0, (void *) &addr, sizeof(addr));
}
// process RADIUS response
-void processrad(u8 * buf, int len)
+void processrad(u8 *buf, int len, char socket_index)
{
u8 b[MAXCONTROL];
MD5_CTX ctx;
- u8 r;
+ u16 r;
sessionidt s;
tunnelidt t = 0;
hasht hash;
return ;
}
len = ntohs(*(u16 *) (buf + 2));
- r = buf[1];
+ r = socket_index | (buf[1] << RADIUS_SHIFT);
s = radius[r].session;
- log(3, 0, s, session[s].tunnel, "Received %s, radius %d response for session %u\n", radius_states[radius[r].state], r, s);
+ log(3, 0, s, session[s].tunnel, "Received %s, radius %d response for session %u\n",
+ radius_states[radius[r].state], r, s);
if (!s && radius[r].state != RADIUSSTOP)
{
log(1, 0, s, session[s].tunnel, " Unexpected RADIUS response\n");
}
else
{
- log(3, 0, s, session[s].tunnel, " Radius reply contains route for %d/%d\n",
- inet_toa(ip),
- inet_toa(mask));
+ char *ips, *masks;
+ ips = strdup(inet_toa(ip));
+ masks = strdup(inet_toa(mask));
+ log(3, 0, s, session[s].tunnel, " Radius reply contains route for %s/%s\n", ips, masks);
+ free(ips);
+ free(masks);
session[s].route[routes].ip = ip;
session[s].route[routes].mask = mask;
routes++;
log(3, 0, s, t, " No IP allocated by radius. Assigned %s from pool\n",
inet_toa(htonl(session[s].ip)));
else
- log(3, 0, s, t, " No IP allocated by radius. None available in pool\n");
+ log(0, 0, s, t, " No IP allocated by radius. The IP address pool is FULL!\n");
}
if (!session[s].dns1 && config->default_dns1)
{
}
else
{
- log(3, 0, s, t, " RADIUS response in state %d\n", radius[r].state);
+ log(3, 0, s, t, " RADIUS response in state %s\n", radius_states[radius[r].state]);
}
} while (0);
}
// Send a retry for RADIUS/CHAP message
-void radiusretry(u8 r)
+void radiusretry(u16 r)
{
sessionidt s = radius[r].session;
tunnelidt t = 0;
#endif
if (s)
t = session[s].tunnel;
- radius[r].retry = 0;
+ radius[r].retry = backoff(radius[r].try + 1);
switch (radius[r].state)
{
- case RADIUSCHAP: // sending CHAP down PPP
- sendchap(t, s);
- break;
- case RADIUSIPCP:
- sendipcp(t, s); // send IPCP
- break;
- case RADIUSAUTH: // sending auth to RADIUS server
- radiussend(r, RADIUSAUTH);
- break;
- case RADIUSSTART: // sending start accounting to RADIUS server
- radiussend(r, RADIUSSTART);
- break;
- case RADIUSSTOP: // sending stop accounting to RADIUS server
- radiussend(r, RADIUSSTOP);
- break;
- default:
- 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, 0, s, session[s].tunnel, "Freeing up radius session %d\n", r);
- break;
+ case RADIUSCHAP: // sending CHAP down PPP
+ sendchap(t, s);
+ break;
+ case RADIUSIPCP:
+ sendipcp(t, s); // send IPCP
+ break;
+ case RADIUSAUTH: // sending auth to RADIUS server
+ radiussend(r, RADIUSAUTH);
+ break;
+ case RADIUSSTART: // sending start accounting to RADIUS server
+ radiussend(r, RADIUSSTART);
+ break;
+ case RADIUSSTOP: // sending stop accounting to RADIUS server
+ radiussend(r, RADIUSSTOP);
+ break;
+ default:
+ 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, 0, s, session[s].tunnel, "Freeing up radius session %d\n", r);
+ break;
}
}
projects / l2tpns.git / blobdiff