// L2TPNS Global Stuff
-// $Id: l2tpns.h,v 1.4 2004/04/16 02:33:32 fred_nerk Exp $
+// $Id: l2tpns.h,v 1.6 2004/05/24 04:33:35 fred_nerk Exp $
#include <netinet/in.h>
#include <stdio.h>
+#include <execinfo.h>
#include "config.h"
-#define VERSION "1.1.2"
+#define VERSION "1.2.0"
// Limits
#define MAXTUNNEL 500 // could be up to 65535
#define MAXSESSION 50000 // could be up to 65535
-#define MAXRADIUS 255
+#define RADIUS_SHIFT 5
+#define RADIUS_MASK ((unsigned short)(((unsigned short)~0) >> (16 - RADIUS_SHIFT)))
+#define MAXRADIUS ((2 << (RADIUS_SHIFT - 1)) * 255)
+
#define MAXCONTROL 1000 // max length control message we ever send...
#define MAXETHER (1500+18) // max packet we try sending to tap
#define MAXTEL 96 // telephone number
#define TAPDEVICE "/dev/net/tun"
#define UDP 17
#define HOMEDIR "/home/l2tpns/" // Base dir for data
-#define STATEFILE "/tmp/l2tpns.dump" // State dump file
-#define NOSTATEFILE "/tmp/l2tpns.no_state_reload" // If exists, state will not be reloaded
-#define CONFIGFILE ETCDIR "/l2tpns.cfg" // Configuration file
-#define CLIUSERS ETCDIR "/l2tpns.users" // CLI Users file
-#define IPPOOLFILE ETCDIR "/l2tpns.ip_pool" // Address pool configuration
+#define STATEFILE "/tmp/l2tpns.dump" // State dump file
+#define NOSTATEFILE "/tmp/l2tpns.no_state_reload" // If exists, state will not be reloaded
+#define CONFIGFILE ETCDIR "/l2tpns.cfg" // Configuration file
+#define CLIUSERS ETCDIR "/l2tpns.users" // CLI Users file
+#define IPPOOLFILE ETCDIR "/l2tpns.ip_pool" // Address pool configuration
#ifndef LIBDIR
#define LIBDIR "/usr/lib/l2tpns"
#endif
#define PPPCCP 0x80FD
#define PPPIP 0x0021
#define PPPMP 0x003D
+#define MIN_IP_SIZE 0x20
enum
{
ConfigReq = 1,
typedef struct stbft
{
- struct stbft *next;
char handle[10];
char in_use;
- int mark;
} tbft;
time_t last_packet; // Last packet from the user (used for idle timeouts)
ipt dns1, dns2; // DNS servers
routet route[MAXROUTE]; // static routes
- u8 radius; // which radius session is being used (0 for not waiting on authentication)
+ u16 radius; // which radius session is being used (0 for not waiting on authentication)
u8 flags; // various bit flags
u8 snoop; // are we snooping this session?
u8 throttle; // is this session throttled?
tunnelt;
// 180 bytes per radius session
-typedef struct radiuss // outstanding RADIUS requests
+typedef struct radiuss // outstanding RADIUS requests
{
- sessionidt session; // which session this applies to
- hasht auth; // request authenticator
- clockt retry; // when to try next
- char calling[MAXTEL]; // calling number
- char pass[129]; // password
- u8 id; // ID for PPP response
- u8 try; // which try we are on
- u8 state; // state of radius requests
- u8 chap; // set if CHAP used (is CHAP identifier)
+ sessionidt session; // which session this applies to
+ hasht auth; // request authenticator
+ clockt retry; // when to try next
+ char calling[MAXTEL]; // calling number
+ char pass[129]; // password
+ u8 id; // ID for PPP response
+ u8 try; // which try we are on
+ u8 state; // state of radius requests
+ u8 chap; // set if CHAP used (is CHAP identifier)
}
radiust;
typedef struct
{
- ipt address;
- char assigned; // 1 if assigned, 0 if free
- clockt last; // last used
- char user[129]; // user (try to have ip addresses persistent)
+ ipt address;
+ char assigned; // 1 if assigned, 0 if free
+ sessionidt session;
+ clockt last; // last used
+ char user[129]; // user (try to have ip addresses persistent)
}
ippoolt;
char config_file[128];
int reload_config; // flag to re-read config (set by cli)
+ int cleanup_interval; // interval between regular cleanups (in seconds)
+ int multi_read_count; // amount of packets to read per fd in processing loop
char tapdevice[10]; // tap device name
char log_filename[128];
int radius_accounting;
ipt radiusserver[MAXRADSERVER]; // radius servers
u8 numradiusservers; // radius server count
+ short num_radfds; // Number of radius filehandles allocated
ipt default_dns1, default_dns2;
int dump_speed;
char plugins[64][MAXPLUGINS];
char old_plugins[64][MAXPLUGINS];
+
+ int next_tbf; // Next HTB id available to use
};
struct config_descriptt
// radius.c
void initrad(void);
-void radiussend(u8 r, u8 state);
-void processrad(u8 *buf, int len);
-void radiusretry(u8 r);
-u8 radiusnew(sessionidt s);
-void radiusclear(u8 r, sessionidt s);
+void radiussend(u16 r, u8 state);
+void processrad(u8 *buf, int len, char socket_index);
+void radiusretry(u16 r);
+u16 radiusnew(sessionidt s);
+void radiusclear(u16 r, sessionidt s);
// throttle.c
int throttle_session(sessionidt s, int throttle);
#ifndef log_hex
#define log_hex(a,b,c,d) do{if (a <= config->debug) _log_hex(a,0,0,0,b,c,d);}while (0)
#endif
-void _log(int level, ipt address, sessionidt s, tunnelidt t, const char *format, ...);
+void _log(int level, ipt address, sessionidt s, tunnelidt t, const char *format, ...) __attribute__((format (printf, 5, 6)));
void _log_hex(int level, ipt address, sessionidt s, tunnelidt t, const char *title, const char *data, int maxsize);
void build_chap_response(char *challenge, u8 id, u16 challenge_length, char **challenge_response);
int sessionsetup(tunnelidt t, sessionidt s, u8 routes);
extern tunnelt *tunnel;
extern sessiont *session;
#define sessionfree (session[0].next)
+
+#define log_backtrace(count, max) \
+if (count++ < max) { \
+ void *array[20]; \
+ char **strings; \
+ int size, i; \
+ log(0, 0, 0, t, "Backtrace follows"); \
+ size = backtrace(array, 10); \
+ strings = backtrace_symbols(array, size); \
+ if (strings) for (i = 0; i < size; i++) \
+ { \
+ log(0, 0, 0, t, "%s\n", strings[i]); \
+ } \
+ free(strings); \
+}
+
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