758 lines
19 KiB
C
758 lines
19 KiB
C
// L2TPNS Radius Stuff
|
|
|
|
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>
|
|
#include <sys/types.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>
|
|
#include "md5.h"
|
|
#include "constants.h"
|
|
#include "l2tpns.h"
|
|
#include "plugin.h"
|
|
#include "util.h"
|
|
|
|
extern radiust *radius;
|
|
extern sessiont *session;
|
|
extern tunnelt *tunnel;
|
|
extern configt *config;
|
|
extern int *radfds;
|
|
extern ip_filtert *ip_filters;
|
|
|
|
// Set up socket for radius requests
|
|
void initrad(void)
|
|
{
|
|
int 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);
|
|
flags = fcntl(radfds[i], F_GETFL, 0);
|
|
fcntl(radfds[i], F_SETFL, flags | O_NONBLOCK);
|
|
}
|
|
}
|
|
|
|
void radiusclear(uint16_t r, sessionidt s)
|
|
{
|
|
if (s) sess_local[s].radius = 0;
|
|
memset(&radius[r], 0, sizeof(radius[r])); // radius[r].state = RADIUSNULL;
|
|
}
|
|
|
|
static uint16_t get_free_radius()
|
|
{
|
|
int count;
|
|
static uint32_t next_radius_id = 0;
|
|
|
|
for (count = MAXRADIUS; count > 0 ; --count)
|
|
{
|
|
++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)
|
|
{
|
|
return next_radius_id;
|
|
}
|
|
}
|
|
|
|
LOG(0, 0, 0, "Can't find a free radius session! This is very bad!\n");
|
|
return 0;
|
|
}
|
|
|
|
uint16_t radiusnew(sessionidt s)
|
|
{
|
|
uint16_t r = sess_local[s].radius;
|
|
|
|
/* re-use */
|
|
if (r)
|
|
{
|
|
LOG(3, s, session[s].tunnel, "Re-used radius %d\n", r);
|
|
return r;
|
|
}
|
|
|
|
if (!(r = get_free_radius()))
|
|
{
|
|
LOG(1, s, session[s].tunnel, "No free RADIUS sessions\n");
|
|
STAT(radius_overflow);
|
|
return 0;
|
|
};
|
|
|
|
memset(&radius[r], 0, sizeof(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;
|
|
}
|
|
|
|
// Send a RADIUS request
|
|
void radiussend(uint16_t r, uint8_t state)
|
|
{
|
|
struct sockaddr_in addr;
|
|
uint8_t b[4096]; // RADIUS packet
|
|
char pass[129];
|
|
int pl;
|
|
uint8_t *p;
|
|
sessionidt s;
|
|
|
|
CSTAT(radiussend);
|
|
|
|
s = radius[r].session;
|
|
if (!config->numradiusservers)
|
|
{
|
|
LOG(0, s, session[s].tunnel, "No RADIUS servers\n");
|
|
return;
|
|
}
|
|
if (!*config->radiussecret)
|
|
{
|
|
LOG(0, s, session[s].tunnel, "No RADIUS secret\n");
|
|
return;
|
|
}
|
|
|
|
if (state != RADIUSAUTH && !config->radius_accounting)
|
|
{
|
|
// Radius accounting is turned off
|
|
radiusclear(r, s);
|
|
return;
|
|
}
|
|
|
|
if (radius[r].state != state)
|
|
radius[r].try = 0;
|
|
|
|
radius[r].state = state;
|
|
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 (radius[r].try > config->numradiusservers * 2)
|
|
{
|
|
if (s)
|
|
{
|
|
if (state == RADIUSAUTH)
|
|
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",
|
|
radius_state(state));
|
|
radiusclear(r, s);
|
|
}
|
|
STAT(radius_timeout);
|
|
}
|
|
else
|
|
{
|
|
STAT(radius_retries);
|
|
radius[r].state = RADIUSWAIT;
|
|
radius[r].retry = 100;
|
|
}
|
|
return;
|
|
}
|
|
// contruct RADIUS access request
|
|
switch (state)
|
|
{
|
|
case RADIUSAUTH:
|
|
b[0] = AccessRequest; // access request
|
|
break;
|
|
case RADIUSSTART:
|
|
case RADIUSSTOP:
|
|
case RADIUSINTERIM:
|
|
b[0] = AccountingRequest; // accounting request
|
|
break;
|
|
default:
|
|
LOG(0, 0, 0, "Unknown radius state %d\n", state);
|
|
}
|
|
b[1] = r >> RADIUS_SHIFT; // identifier
|
|
memcpy(b + 4, radius[r].auth, 16);
|
|
p = b + 20;
|
|
if (s)
|
|
{
|
|
*p = 1; // user name
|
|
p[1] = strlen(session[s].user) + 2;
|
|
strcpy(p + 2, session[s].user);
|
|
p += p[1];
|
|
}
|
|
if (state == RADIUSAUTH)
|
|
{
|
|
if (radius[r].chap)
|
|
{
|
|
*p = 3; // CHAP password
|
|
p[1] = 19; // length
|
|
p[2] = radius[r].id; // ID
|
|
memcpy(p + 3, radius[r].pass, 16); // response from CHAP request
|
|
p += p[1];
|
|
*p = 60; // CHAP Challenge
|
|
p[1] = 18; // length
|
|
memcpy(p + 2, radius[r].auth, 16);
|
|
p += p[1];
|
|
}
|
|
else
|
|
{
|
|
strcpy(pass, radius[r].pass);
|
|
pl = strlen(pass);
|
|
while (pl & 15)
|
|
pass[pl++] = 0; // pad
|
|
if (pl)
|
|
{ // encrypt
|
|
hasht hash;
|
|
int p = 0;
|
|
while (p < pl)
|
|
{
|
|
MD5_CTX ctx;
|
|
MD5Init(&ctx);
|
|
MD5Update(&ctx, config->radiussecret, strlen(config->radiussecret));
|
|
if (p)
|
|
MD5Update(&ctx, pass + p - 16, 16);
|
|
else
|
|
MD5Update(&ctx, radius[r].auth, 16);
|
|
MD5Final(hash, &ctx);
|
|
do
|
|
{
|
|
pass[p] ^= hash[p & 15];
|
|
p++;
|
|
}
|
|
while (p & 15);
|
|
}
|
|
}
|
|
*p = 2; // password
|
|
p[1] = pl + 2;
|
|
if (pl)
|
|
memcpy(p + 2, pass, pl);
|
|
p += p[1];
|
|
}
|
|
}
|
|
else if (state == RADIUSSTART || state == RADIUSSTOP || state == RADIUSINTERIM)
|
|
{ // accounting
|
|
*p = 40; // accounting type
|
|
p[1] = 6;
|
|
*(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].unique_id, session[s].opened);
|
|
p += p[1];
|
|
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);
|
|
p += p[1];
|
|
|
|
*p = 43; // output octets
|
|
p[1] = 6;
|
|
*(uint32_t *) (p + 2) = htonl(session[s].cout);
|
|
p += p[1];
|
|
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 packets
|
|
p[1] = 6;
|
|
*(uint32_t *) (p + 2) = htonl(session[s].pout);
|
|
p += p[1];
|
|
|
|
*p = 52; // input gigawords
|
|
p[1] = 6;
|
|
*(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];
|
|
}
|
|
}
|
|
}
|
|
if (s)
|
|
{
|
|
*p = 5; // NAS-Port
|
|
p[1] = 6;
|
|
*(uint32_t *) (p + 2) = htonl(s);
|
|
p += p[1];
|
|
}
|
|
if (s && 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].called)
|
|
{
|
|
*p = 30; // called
|
|
p[1] = strlen(session[s].called) + 2;
|
|
strcpy(p + 2, session[s].called);
|
|
p += p[1];
|
|
}
|
|
if (*radius[r].calling)
|
|
{
|
|
*p = 31; // calling
|
|
p[1] = strlen(radius[r].calling) + 2;
|
|
strcpy(p + 2, radius[r].calling);
|
|
p += p[1];
|
|
}
|
|
else if (*session[s].calling)
|
|
{
|
|
*p = 31; // calling
|
|
p[1] = strlen(session[s].calling) + 2;
|
|
strcpy(p + 2, session[s].calling);
|
|
p += p[1];
|
|
}
|
|
// NAS-IP-Address
|
|
*p = 4;
|
|
p[1] = 6;
|
|
*(uint32_t *)(p + 2) = config->bind_address;
|
|
p += p[1];
|
|
|
|
// All AVpairs added
|
|
*(uint16_t *) (b + 2) = htons(p - b);
|
|
if (state != RADIUSAUTH)
|
|
{
|
|
// Build auth for accounting packet
|
|
char z[16] = {0};
|
|
char hash[16] = {0};
|
|
MD5_CTX ctx;
|
|
MD5Init(&ctx);
|
|
MD5Update(&ctx, b, 4);
|
|
MD5Update(&ctx, z, 16);
|
|
MD5Update(&ctx, b + 20, (p - b) - 20);
|
|
MD5Update(&ctx, config->radiussecret, strlen(config->radiussecret));
|
|
MD5Final(hash, &ctx);
|
|
memcpy(b + 4, hash, 16);
|
|
memcpy(radius[r].auth, hash, 16);
|
|
}
|
|
memset(&addr, 0, sizeof(addr));
|
|
addr.sin_family = AF_INET;
|
|
*(uint32_t *) & addr.sin_addr = config->radiusserver[(radius[r].try - 1) % config->numradiusservers];
|
|
{
|
|
// 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);
|
|
}
|
|
|
|
LOG_HEX(5, "RADIUS Send", b, (p - b));
|
|
sendto(radfds[r & RADIUS_MASK], b, p - b, 0, (void *) &addr, sizeof(addr));
|
|
}
|
|
|
|
// process RADIUS response
|
|
void processrad(uint8_t *buf, int len, char socket_index)
|
|
{
|
|
uint8_t b[MAXCONTROL];
|
|
MD5_CTX ctx;
|
|
uint16_t r;
|
|
sessionidt s;
|
|
tunnelidt t = 0;
|
|
hasht hash;
|
|
uint8_t routes = 0;
|
|
int r_code;
|
|
int r_id;
|
|
|
|
CSTAT(processrad);
|
|
|
|
LOG_HEX(5, "RADIUS Response", buf, len);
|
|
if (len < 20 || len < ntohs(*(uint16_t *) (buf + 2)))
|
|
{
|
|
LOG(1, 0, 0, "Duff RADIUS response length %d\n", len);
|
|
return ;
|
|
}
|
|
|
|
r_code = buf[0]; // response type
|
|
r_id = buf[1]; // radius reply indentifier.
|
|
|
|
len = ntohs(*(uint16_t *) (buf + 2));
|
|
r = socket_index | (r_id << RADIUS_SHIFT);
|
|
s = radius[r].session;
|
|
LOG(3, s, session[s].tunnel, "Received %s, radius %d response for session %u (%s, id %d)\n",
|
|
radius_state(radius[r].state), r, s, radius_code(r_code), r_id);
|
|
|
|
if (!s && radius[r].state != RADIUSSTOP)
|
|
{
|
|
LOG(1, s, session[s].tunnel, " Unexpected RADIUS response\n");
|
|
return;
|
|
}
|
|
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;
|
|
}
|
|
t = session[s].tunnel;
|
|
MD5Init(&ctx);
|
|
MD5Update(&ctx, buf, 4);
|
|
MD5Update(&ctx, radius[r].auth, 16);
|
|
MD5Update(&ctx, buf + 20, len - 20);
|
|
MD5Update(&ctx, config->radiussecret, strlen(config->radiussecret));
|
|
MD5Final(hash, &ctx);
|
|
do {
|
|
if (memcmp(hash, buf + 4, 16))
|
|
{
|
|
LOG(0, s, session[s].tunnel, " Incorrect auth on RADIUS response!! (wrong secret in radius config?)\n");
|
|
return; // Do nothing. On timeout, it will try the next radius server.
|
|
}
|
|
|
|
if ((radius[r].state == RADIUSAUTH && 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));
|
|
return; // We got something we didn't expect. Let the timeouts take
|
|
// care off finishing the radius session if that's really correct.
|
|
}
|
|
|
|
if (radius[r].state == RADIUSAUTH)
|
|
{
|
|
// run post-auth plugin
|
|
struct param_post_auth packet = {
|
|
&tunnel[t],
|
|
&session[s],
|
|
session[s].user,
|
|
(r_code == AccessAccept),
|
|
radius[r].chap ? PPPCHAP : PPPPAP
|
|
};
|
|
|
|
run_plugins(PLUGIN_POST_AUTH, &packet);
|
|
r_code = packet.auth_allowed ? AccessAccept : AccessReject;
|
|
|
|
// process auth response
|
|
if (radius[r].chap)
|
|
{
|
|
// CHAP
|
|
uint8_t *p = makeppp(b, sizeof(b), 0, 0, t, s, PPPCHAP);
|
|
if (!p) return; // Abort!
|
|
|
|
*p = (r_code == AccessAccept) ? 3 : 4; // ack/nak
|
|
p[1] = radius[r].id;
|
|
*(uint16_t *) (p + 2) = ntohs(4); // no message
|
|
tunnelsend(b, (p - b) + 4, t); // send it
|
|
|
|
LOG(3, s, session[s].tunnel, " CHAP User %s authentication %s.\n", session[s].user,
|
|
(r_code == AccessAccept) ? "allowed" : "denied");
|
|
}
|
|
else
|
|
{
|
|
// PAP
|
|
uint8_t *p = makeppp(b, sizeof(b), 0, 0, t, s, PPPPAP);
|
|
if (!p) return; // Abort!
|
|
|
|
// ack/nak
|
|
*p = r_code;
|
|
p[1] = radius[r].id;
|
|
*(uint16_t *) (p + 2) = ntohs(5);
|
|
p[4] = 0; // no message
|
|
tunnelsend(b, (p - b) + 5, t); // send it
|
|
|
|
LOG(3, s, session[s].tunnel, " PAP User %s authentication %s.\n", session[s].user,
|
|
(r_code == AccessAccept) ? "allowed" : "denied");
|
|
}
|
|
|
|
if (r_code == AccessAccept)
|
|
{
|
|
// Login successful
|
|
// Extract IP, routes, etc
|
|
uint8_t *p = buf + 20;
|
|
uint8_t *e = buf + len;
|
|
for (; p + 2 <= e && p[1] && p + p[1] <= e; p += p[1])
|
|
{
|
|
if (*p == 8)
|
|
{
|
|
// Framed-IP-Address
|
|
if (p[1] < 6) continue;
|
|
session[s].ip = ntohl(*(uint32_t *) (p + 2));
|
|
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)
|
|
{
|
|
// DNS address
|
|
if (p[1] < 6) continue;
|
|
session[s].dns1 = ntohl(*(uint32_t *) (p + 2));
|
|
LOG(3, s, session[s].tunnel, " Radius reply contains primary DNS address %s\n",
|
|
fmtaddr(htonl(session[s].dns1), 0));
|
|
}
|
|
else if (*p == 136)
|
|
{
|
|
// DNS address
|
|
if (p[1] < 6) continue;
|
|
session[s].dns2 = ntohl(*(uint32_t *) (p + 2));
|
|
LOG(3, s, session[s].tunnel, " Radius reply contains secondary DNS address %s\n",
|
|
fmtaddr(htonl(session[s].dns2), 0));
|
|
}
|
|
else if (*p == 22)
|
|
{
|
|
// Framed-Route
|
|
in_addr_t ip = 0, mask = 0;
|
|
uint8_t u = 0;
|
|
uint8_t bits = 0;
|
|
uint8_t *n = p + 2;
|
|
uint8_t *e = p + p[1];
|
|
while (n < e && (isdigit(*n) || *n == '.'))
|
|
{
|
|
if (*n == '.')
|
|
{
|
|
ip = (ip << 8) + u;
|
|
u = 0;
|
|
}
|
|
else
|
|
u = u * 10 + *n - '0';
|
|
n++;
|
|
}
|
|
ip = (ip << 8) + u;
|
|
if (*n == '/')
|
|
{
|
|
n++;
|
|
while (n < e && isdigit(*n))
|
|
bits = bits * 10 + *n++ - '0';
|
|
mask = (( -1) << (32 - bits));
|
|
}
|
|
else if ((ip >> 24) < 128)
|
|
mask = 0xFF0000;
|
|
else if ((ip >> 24) < 192)
|
|
mask = 0xFFFF0000;
|
|
else
|
|
mask = 0xFFFFFF00;
|
|
|
|
if (routes == MAXROUTE)
|
|
{
|
|
LOG(1, s, session[s].tunnel, " Too many routes\n");
|
|
}
|
|
else if (ip)
|
|
{
|
|
LOG(3, s, session[s].tunnel, " Radius reply contains route for %s/%s\n",
|
|
fmtaddr(htonl(ip), 0), fmtaddr(htonl(mask), 1));
|
|
|
|
session[s].route[routes].ip = ip;
|
|
session[s].route[routes].mask = mask;
|
|
routes++;
|
|
}
|
|
}
|
|
else if (*p == 11)
|
|
{
|
|
// Filter-Id
|
|
char *filter = p + 2;
|
|
int l = p[1] - 2;
|
|
char *suffix;
|
|
uint8_t *f = 0;
|
|
int i;
|
|
|
|
LOG(3, s, session[s].tunnel, " Radius reply contains Filter-Id \"%.*s\"\n", l, filter);
|
|
if ((suffix = memchr(filter, '.', l)))
|
|
{
|
|
int b = suffix - filter;
|
|
if (l - b == 3 && !memcmp("in", suffix+1, 2))
|
|
f = &session[s].filter_in;
|
|
else if (l - b == 4 && !memcmp("out", suffix+1, 3))
|
|
f = &session[s].filter_out;
|
|
|
|
l = b;
|
|
}
|
|
|
|
if (!f)
|
|
{
|
|
LOG(3, s, session[s].tunnel, " Invalid filter\n");
|
|
continue;
|
|
}
|
|
|
|
for (*f = 0, i = 0; !*f && i < MAXFILTER; i++)
|
|
if (strlen(ip_filters[i].name) == l &&
|
|
!strncmp(ip_filters[i].name, filter, l))
|
|
*f = i + 1;
|
|
|
|
if (*f)
|
|
ip_filters[*f - 1].used++;
|
|
else
|
|
LOG(3, s, session[s].tunnel, " Unknown filter\n");
|
|
|
|
}
|
|
else if (*p == 26 && p[1] >= 7)
|
|
{
|
|
// Vendor-Specific Attribute
|
|
int vendor = ntohl(*(int *)(p + 2));
|
|
char attrib = *(p + 6);
|
|
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);
|
|
if (vendor != 9 || attrib != 1)
|
|
{
|
|
LOG(3, s, session[s].tunnel, " Unknown vendor-specific\n");
|
|
continue;
|
|
}
|
|
|
|
if (attrib_length < 0) continue;
|
|
|
|
avpair = key = calloc(attrib_length + 1, 1);
|
|
memcpy(avpair, p + 8, attrib_length);
|
|
LOG(3, s, session[s].tunnel, " Cisco-Avpair value: %s\n", avpair);
|
|
do {
|
|
value = strchr(key, '=');
|
|
if (!value) break;
|
|
*value++ = 0;
|
|
|
|
// Trim quotes off reply string
|
|
if (*value == '\'' || *value == '\"')
|
|
{
|
|
char *x;
|
|
value++;
|
|
x = value + strlen(value) - 1;
|
|
if (*x == '\'' || *x == '\"')
|
|
*x = 0;
|
|
}
|
|
|
|
// Run hooks
|
|
newp = strchr(value, ',');
|
|
if (newp) *newp++ = 0;
|
|
{
|
|
struct param_radius_response p = { &tunnel[session[s].tunnel], &session[s], key, value };
|
|
run_plugins(PLUGIN_RADIUS_RESPONSE, &p);
|
|
}
|
|
key = newp;
|
|
} 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 rejected for %s\n", session[s].user);
|
|
sessionkill(s, "Authentication rejected");
|
|
break;
|
|
}
|
|
|
|
if (!session[s].dns1 && config->default_dns1)
|
|
{
|
|
session[s].dns1 = htonl(config->default_dns1);
|
|
LOG(3, s, t, " Sending dns1 = %s\n", fmtaddr(config->default_dns1, 0));
|
|
}
|
|
if (!session[s].dns2 && config->default_dns2)
|
|
{
|
|
session[s].dns2 = htonl(config->default_dns2);
|
|
LOG(3, s, t, " Sending dns2 = %s\n", fmtaddr(config->default_dns2, 0));
|
|
}
|
|
|
|
// Valid Session, set it up
|
|
session[s].unique_id = 0;
|
|
sessionsetup(t, s);
|
|
}
|
|
else
|
|
{
|
|
// An ack for a stop or start record.
|
|
LOG(3, s, t, " RADIUS accounting ack recv in state %s\n", radius_state(radius[r].state));
|
|
break;
|
|
}
|
|
} while (0);
|
|
|
|
// finished with RADIUS
|
|
radiusclear(r, s);
|
|
}
|
|
|
|
// Send a retry for RADIUS/CHAP message
|
|
void radiusretry(uint16_t r)
|
|
{
|
|
sessionidt s = radius[r].session;
|
|
tunnelidt t = 0;
|
|
|
|
CSTAT(radiusretry);
|
|
|
|
if (s) t = session[s].tunnel;
|
|
|
|
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;
|
|
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
|
|
// free up RADIUS task
|
|
radiusclear(r, s);
|
|
LOG(3, s, session[s].tunnel, "Freeing up radius session %d\n", r);
|
|
break;
|
|
}
|
|
}
|