// L2TPNS Radius Stuff
-char const *cvs_id_radius = "$Id: radius.c,v 1.18 2004/11/29 02:17:18 bodea Exp $";
+char const *cvs_id_radius = "$Id: radius.c,v 1.20.2.2 2005/05/03 05:10:52 bodea Exp $";
#include <time.h>
#include <stdio.h>
extern radiust *radius;
extern sessiont *session;
extern tunnelt *tunnel;
-extern u32 sessionid;
extern configt *config;
extern int *radfds;
extern ip_filtert *ip_filters;
}
}
-void radiusclear(u16 r, sessionidt s)
+void radiusclear(uint16_t r, sessionidt s)
{
if (s) session[s].radius = 0;
memset(&radius[r], 0, sizeof(radius[r])); // radius[r].state = RADIUSNULL;
}
-static u16 get_free_radius()
+static uint16_t get_free_radius()
{
int count;
- static u32 next_radius_id = 0;
+ static uint32_t next_radius_id = 0;
for (count = MAXRADIUS; count > 0 ; --count)
{
return 0;
}
-u16 radiusnew(sessionidt s)
+uint16_t radiusnew(sessionidt s)
{
- u16 r = session[s].radius;
+ uint16_t r = session[s].radius;
/* re-use */
if (r)
}
// Send a RADIUS request
-void radiussend(u16 r, u8 state)
+void radiussend(uint16_t r, uint8_t state)
{
struct sockaddr_in addr;
- u8 b[4096]; // RADIUS packet
+ uint8_t b[4096]; // RADIUS packet
char pass[129];
int pl;
- u8 *p;
+ uint8_t *p;
sessionidt s;
CSTAT(call_radiussend);
{ // accounting
*p = 40; // accounting type
p[1] = 6;
- *(u32 *) (p + 2) = htonl((state == RADIUSSTART) ? 1 : 2);
+ *(uint32_t *) (p + 2) = htonl((state == RADIUSSTART) ? 1 : 2);
p += p[1];
if (s)
{
{ // stop
*p = 42; // input octets
p[1] = 6;
- *(u32 *) (p + 2) = htonl(session[s].cin);
+ *(uint32_t *) (p + 2) = htonl(session[s].cin);
p += p[1];
*p = 43; // output octets
p[1] = 6;
- *(u32 *) (p + 2) = htonl(session[s].cout);
+ *(uint32_t *) (p + 2) = htonl(session[s].cout);
p += p[1];
*p = 46; // session time
p[1] = 6;
- *(u32 *) (p + 2) = htonl(time(NULL) - session[s].opened);
+ *(uint32_t *) (p + 2) = htonl(time(NULL) - session[s].opened);
p += p[1];
*p = 47; // input packets
p[1] = 6;
- *(u32 *) (p + 2) = htonl(session[s].pin);
+ *(uint32_t *) (p + 2) = htonl(session[s].pin);
p += p[1];
*p = 48; // output spackets
p[1] = 6;
- *(u32 *) (p + 2) = htonl(session[s].pout);
+ *(uint32_t *) (p + 2) = htonl(session[s].pout);
p += p[1];
}
else
{ // start
*p = 41; // delay
p[1] = 6;
- *(u32 *) (p + 2) = htonl(time(NULL) - session[s].opened);
+ *(uint32_t *) (p + 2) = htonl(time(NULL) - session[s].opened);
+ 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];
}
}
{
*p = 5; // NAS-Port
p[1] = 6;
- *(u32 *) (p + 2) = htonl(s);
+ *(uint32_t *) (p + 2) = htonl(s);
p += p[1];
}
if (s && session[s].ip)
{
*p = 8; // Framed-IP-Address
p[1] = 6;
- *(u32 *) (p + 2) = htonl(session[s].ip);
+ *(uint32_t *) (p + 2) = htonl(session[s].ip);
p += p[1];
}
if (*session[s].called)
// NAS-IP-Address
*p = 4;
p[1] = 6;
- *(u32 *)(p + 2) = config->bind_address;
+ *(uint32_t *)(p + 2) = config->bind_address;
p += p[1];
// All AVpairs added
- *(u16 *) (b + 2) = htons(p - b);
+ *(uint16_t *) (b + 2) = htons(p - b);
if (state != RADIUSAUTH)
{
// Build auth for accounting packet
}
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
- *(u32 *) & addr.sin_addr = config->radiusserver[(radius[r].try - 1) % config->numradiusservers];
+ *(uint32_t *) & addr.sin_addr = config->radiusserver[(radius[r].try - 1) % config->numradiusservers];
{
- // get radius port
- u16 port = config->radiusport[(radius[r].try - 1) % config->numradiusservers];
- // no need to define the accounting port for itself:
- // the accounting port is as far as I know always one more
- // than the auth port JK 20040713
- addr.sin_port = htons((state == RADIUSAUTH) ? port : port+1);
+ // get radius port
+ uint16_t port = config->radiusport[(radius[r].try - 1) % config->numradiusservers];
+ // no need to define the accounting port for itself:
+ // the accounting port is as far as I know always one more
+ // than the auth port JK 20040713
+ addr.sin_port = htons((state == RADIUSAUTH) ? port : port+1);
}
LOG_HEX(5, "RADIUS Send", b, (p - b));
}
// process RADIUS response
-void processrad(u8 *buf, int len, char socket_index)
+void processrad(uint8_t *buf, int len, char socket_index)
{
- u8 b[MAXCONTROL];
+ uint8_t b[MAXCONTROL];
MD5_CTX ctx;
- u16 r;
+ uint16_t r;
sessionidt s;
tunnelidt t = 0;
hasht hash;
- u8 routes = 0;
+ uint8_t routes = 0;
int r_code, r_id ; // Radius code.
CSTAT(call_processrad);
LOG_HEX(5, "RADIUS Response", buf, len);
- if (len < 20 || len < ntohs(*(u16 *) (buf + 2)))
+ if (len < 20 || len < ntohs(*(uint16_t *) (buf + 2)))
{
LOG(1, 0, 0, "Duff RADIUS response length %d\n", len);
return ;
}
- len = ntohs(*(u16 *) (buf + 2));
+ 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 (code %d, id %d)\n",
if (radius[r].chap)
{
// CHAP
- u8 *p = makeppp(b, sizeof(b), 0, 0, t, s, PPPCHAP);
+ uint8_t *p = makeppp(b, sizeof(b), 0, 0, t, s, PPPCHAP);
if (!p) return; // Abort!
{
(*buf == 2) ? "allowed" : "denied");
*p = (*buf == 2) ? 3 : 4; // ack/nak
p[1] = radius[r].id;
- *(u16 *) (p + 2) = ntohs(4); // no message
+ *(uint16_t *) (p + 2) = ntohs(4); // no message
tunnelsend(b, (p - b) + 4, t); // send it
}
else
{
// PAP
- u8 *p = makeppp(b, sizeof(b), 0, 0, t, s, PPPPAP);
+ uint8_t *p = makeppp(b, sizeof(b), 0, 0, t, s, PPPPAP);
if (!p) return; // Abort!
{
// ack/nak
*p = *buf;
p[1] = radius[r].id;
- *(u16 *) (p + 2) = ntohs(5);
+ *(uint16_t *) (p + 2) = ntohs(5);
p[4] = 0; // no message
tunnelsend(b, (p - b) + 5, t); // send it
}
{
// Login successful
// Extract IP, routes, etc
- u8 *p = buf + 20;
- u8 *e = buf + len;
- for (p = buf + 20; p < e && p[1]; p += p[1])
+ 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
- session[s].ip = ntohl(*(u32 *) (p + 2));
+ 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
- session[s].dns1 = ntohl(*(u32 *) (p + 2));
+ 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
- session[s].dns2 = ntohl(*(u32 *) (p + 2));
+ 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
- ipt ip = 0, mask = 0;
- u8 u = 0;
- u8 bits = 0;
- u8 *n = p + 2;
- u8 *e = p + p[1];
+ 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 == '.')
char *filter = p + 2;
int l = p[1] - 2;
char *suffix;
- u8 *f = 0;
+ uint8_t *f = 0;
int i;
LOG(3, s, session[s].tunnel, " Radius reply contains Filter-Id \"%.*s\"\n", l, filter);
LOG(3, s, session[s].tunnel, " Unknown filter\n");
}
- else if (*p == 26)
+ else if (*p == 26 && p[1] >= 7)
{
// Vendor-Specific Attribute
int vendor = ntohl(*(int *)(p + 2));
char attrib = *(p + 6);
char 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 (attrib_length == 0) continue;
- if (attrib != 1)
- LOG(3, s, session[s].tunnel, " Unknown vendor-specific\n");
- else
+ if (vendor != 9 || attrib != 1)
{
- char *avpair, *value, *key, *newp;
- 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);
+ 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 (*buf == 3)
{
- 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;
}
}
// Send a retry for RADIUS/CHAP message
-void radiusretry(u16 r)
+void radiusretry(uint16_t r)
{
sessionidt s = radius[r].session;
tunnelidt t = 0;
if (s)
t = session[s].tunnel;
+
radius[r].retry = backoff(radius[r].try + 1);
switch (radius[r].state)
{
projects / l2tpns.git / blobdiff