welterde/l2tpns
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Add log_backtrace

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Use multiple radius sockets to allow more concurrent authentication requests
Fix minimum length of IP packets
Add support for reading more than one packet per fd in each processing loop
Add variable cleanup_interval for changing cleanup interval
Bump version to 1.2.0
This commit is contained in:
fred_nerk 2004-05-24 04:24:06 +00:00
parent 8512f6d924
commit 98efdea254
1 changed files with 56 additions and 32 deletions
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50
l2tpns.h
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@ -1,16 +1,19 @@
// L2TPNS Global Stuff
// $Id: l2tpns.h,v 1.4 2004/04/16 02:33:32 fred_nerk Exp $
// $Id: l2tpns.h,v 1.5 2004/05/24 04:24:06 fred_nerk Exp $
#include <netinet/in.h>
#include <stdio.h>
#include "config.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
@ -52,6 +55,7 @@
#define PPPCCP 0x80FD
#define PPPIP 0x0021
#define PPPMP 0x003D
#define MIN_IP_SIZE 0x20
enum
{
ConfigReq = 1,
@ -99,10 +103,8 @@ controlt;
typedef struct stbft
{
struct stbft *next;
char handle[10];
char in_use;
int mark;
} tbft;
@ -128,7 +130,7 @@ typedef struct sessions
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?
@ -190,6 +192,7 @@ typedef struct
{
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)
}
@ -325,6 +328,8 @@ struct configt
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];
@ -334,6 +339,7 @@ struct configt
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;
@ -350,6 +356,8 @@ struct configt
int dump_speed;
char plugins[64][MAXPLUGINS];
char old_plugins[64][MAXPLUGINS];
int next_tbf; // Next HTB id available to use
};
struct config_descriptt
@ -380,11 +388,11 @@ void dumplcp(char *p, int l);
// 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);
@ -437,7 +445,7 @@ void mainloop(void);
#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);
@ -460,3 +468,19 @@ void host_unreachable(ipt destination, u16 id, ipt source, char *packet, int pac
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); \
}