- fix case where ll_delete removes the last entry

[l2tpns.git] / l2tpns.h

diff --git a/l2tpns.h b/l2tpns.h
index d592840..dc6d8e6 100644 (file)
--- a/l2tpns.h
+++ b/l2tpns.h
@@ -1,5 +1,5 @@
 // L2TPNS Global Stuff
 // L2TPNS Global Stuff

-// $Id: l2tpns.h,v 1.12 2004/07/12 08:21:45 bodea Exp $
+// $Id: l2tpns.h,v 1.35 2004/11/16 07:54:32 bodea Exp $

 
 #ifndef __L2TPNS_H__
 #define __L2TPNS_H__
 
 #ifndef __L2TPNS_H__
 #define __L2TPNS_H__


@@ -15,7 +15,7 @@
 #include <sys/types.h>
 #include <libcli.h>
 
 #include <sys/types.h>
 #include <libcli.h>
 

-#define VERSION        "2.0.1"
+#define VERSION        "2.0.8"

 
 // Limits
 #define MAXTUNNEL      500             // could be up to 65535
 
 // Limits
 #define MAXTUNNEL      500             // could be up to 65535


@@ -24,7 +24,7 @@
 
 #define RADIUS_SHIFT   5
 #define RADIUS_MASK    ((unsigned short)(((unsigned short)~0) >> (16 - RADIUS_SHIFT)))
 
 #define RADIUS_SHIFT   5
 #define RADIUS_MASK    ((unsigned short)(((unsigned short)~0) >> (16 - RADIUS_SHIFT)))

-#define        MAXRADIUS       ((2 << (RADIUS_SHIFT - 1)) * 255)
+#define        MAXRADIUS       ((unsigned long)(1L << RADIUS_SHIFT) * 255)

 
 #define T_UNDEF                (0xffff)        // A tunnel ID that won't ever be used. Mark session as undefined.
 #define T_FREE         (0)             // A tunnel ID that won't ever be used. Mark session as free.
 
 #define T_UNDEF                (0xffff)        // A tunnel ID that won't ever be used. Mark session as undefined.
 #define T_FREE         (0)             // A tunnel ID that won't ever be used. Mark session as free.


@@ -40,25 +40,37 @@
 #define MAX_LOG_LENGTH 512             // Maximum size of log message
 #define ECHO_TIMEOUT   60              // Time between last packet sent and LCP ECHO generation
 #define IDLE_TIMEOUT   240             // Time between last packet sent and LCP ECHO generation
 #define MAX_LOG_LENGTH 512             // Maximum size of log message
 #define ECHO_TIMEOUT   60              // Time between last packet sent and LCP ECHO generation
 #define IDLE_TIMEOUT   240             // Time between last packet sent and LCP ECHO generation

+#define BUSY_WAIT_TIME 3000            // 5 minutes in 1/10th seconds to wait for radius to cleanup on shutdown

 
 // Constants
 
 // Constants

-#include "config.h"
-#ifndef PLUGINDIR
-#define PLUGINDIR      LIBDIR                  // Plugins
+#ifndef ETCDIR
+#define ETCDIR         "/etc/l2tpns"

 #endif
 
 #endif
 

-#ifndef PLUGINCONF
-#define PLUGINCONF     ETCDIR                  // Plugin config dir
+#ifndef LIBDIR
+#define LIBDIR         "/usr/lib/l2tpns"

 #endif
 
 #endif
 

-#ifndef DATADIR
-#define DATADIR                "/tmp"
+#ifndef STATEDIR
+#define STATEDIR       "/var/lib/l2tpns"
+#endif
+
+#ifndef PLUGINDIR
+#define PLUGINDIR      LIBDIR          // Plugins
+#endif
+
+#ifndef PLUGINCONF
+#define PLUGINCONF     ETCDIR          // Plugin config dir

 #endif
 
 #ifndef FLASHDIR
 #define FLASHDIR       ETCDIR
 #endif
 
 #endif
 
 #ifndef FLASHDIR
 #define FLASHDIR       ETCDIR
 #endif
 

+#ifndef DATADIR
+#define DATADIR                STATEDIR
+#endif
+

 #define TUNDEVICE      "/dev/net/tun"
 #define STATEFILE      DATADIR "/state.dump"           // State dump file
 #define CONFIGFILE     FLASHDIR "/startup-config"      // Configuration file
 #define TUNDEVICE      "/dev/net/tun"
 #define STATEFILE      DATADIR "/state.dump"           // State dump file
 #define CONFIGFILE     FLASHDIR "/startup-config"      // Configuration file


@@ -67,7 +79,6 @@
 #define ACCT_TIME      3000            // 5 minute accounting interval
 #define        L2TPPORT        1701            // L2TP port
 #define RADPORT                1645            // old radius port...
 #define ACCT_TIME      3000            // 5 minute accounting interval
 #define        L2TPPORT        1701            // L2TP port
 #define RADPORT                1645            // old radius port...

-#define        RADAPORT        1646            // old radius accounting port

 #define        PKTARP          0x0806          // ARP packet type
 #define        PKTIP           0x0800          // IP packet type
 #define PSEUDOMAC      0x0200          // pseudo MAC prefix (local significant MAC)
 #define        PKTARP          0x0806          // ARP packet type
 #define        PKTIP           0x0800          // IP packet type
 #define PSEUDOMAC      0x0200          // pseudo MAC prefix (local significant MAC)


@@ -91,7 +102,8 @@ enum
        ProtocolRej,
        EchoReq,
        EchoReply,
        ProtocolRej,
        EchoReq,
        EchoReply,

-       DiscardRequest
+       DiscardRequest,
+       IdentRequest

 };
 
 // Types
 };
 
 // Types


@@ -110,7 +122,8 @@ struct cli_session_actions {
        char action;
        ipt snoop_ip;
        u16 snoop_port;
        char action;
        ipt snoop_ip;
        u16 snoop_port;

-       int throttle;
+       int throttle_in;
+       int throttle_out;

 };
 
 #define CLI_SESS_KILL          0x01
 };
 
 #define CLI_SESS_KILL          0x01


@@ -120,7 +133,7 @@ struct cli_session_actions {
 #define CLI_SESS_NOTHROTTLE    0x10
 
 struct cli_tunnel_actions {
 #define CLI_SESS_NOTHROTTLE    0x10
 
 struct cli_tunnel_actions {

-       char action;
+       char action;

 };
 
 #define CLI_TUN_KILL           0x01
 };
 
 #define CLI_TUN_KILL           0x01


@@ -148,10 +161,10 @@ typedef struct sessions
 {
        sessionidt next;                // next session in linked list
        sessionidt far;                 // far end session ID
 {
        sessionidt next;                // next session in linked list
        sessionidt far;                 // far end session ID

-       tunnelidt tunnel;               // tunnel ID
+       tunnelidt tunnel;               // near end tunnel ID

        ipt ip;                         // IP of session set by RADIUS response (host byte order).
        int ip_pool_index;              // index to IP pool
        ipt ip;                         // IP of session set by RADIUS response (host byte order).
        int ip_pool_index;              // index to IP pool

-       unsigned long sid;              // session id for hsddb
+       unsigned long unique_id;        // unique session id

        u16 nr;                         // next receive
        u16 ns;                         // next send
        u32 magic;                      // ppp magic number
        u16 nr;                         // next receive
        u16 ns;                         // next send
        u32 magic;                      // ppp magic number


@@ -160,7 +173,8 @@ typedef struct sessions
        u32 total_cin;                  // This counter is never reset while a session is open
        u32 total_cout;                 // This counter is never reset while a session is open
        u32 id;                         // session id
        u32 total_cin;                  // This counter is never reset while a session is open
        u32 total_cout;                 // This counter is never reset while a session is open
        u32 id;                         // session id

-       u32 throttle;                   // non-zero if this session is throttled.
+       u16 throttle_in;                // upstream throttle rate (kbps)
+       u16 throttle_out;               // downstream throttle rate

        clockt opened;                  // when started
        clockt die;                     // being closed, when to finally free
        time_t last_packet;             // Last packet from the user (used for idle timeouts)
        clockt opened;                  // when started
        clockt die;                     // being closed, when to finally free
        time_t last_packet;             // Last packet from the user (used for idle timeouts)


@@ -171,6 +185,7 @@ typedef struct sessions
        u16 tbf_in;                     // filter bucket for throttling in from the user.
        u16 tbf_out;                    // filter bucket for throttling out to the user.
        u8 l2tp_flags;                  // various bit flags from the ICCN on the l2tp tunnel.
        u16 tbf_in;                     // filter bucket for throttling in from the user.
        u16 tbf_out;                    // filter bucket for throttling out to the user.
        u8 l2tp_flags;                  // various bit flags from the ICCN on the l2tp tunnel.

+       u8 reserved_old_snoop;          // No longer used - remove at some time

        u8 walled_garden;               // is this session gardened?
        u8 flags1;                      // additional flags (currently unused);
        char random_vector[MAXTEL];
        u8 walled_garden;               // is this session gardened?
        u8 flags1;                      // additional flags (currently unused);
        char random_vector[MAXTEL];


@@ -183,19 +198,21 @@ typedef struct sessions
        u32 flags;                      // Various session flags.
        ipt snoop_ip;                   // Interception destination IP
        u16 snoop_port;                 // Interception destination port
        u32 flags;                      // Various session flags.
        ipt snoop_ip;                   // Interception destination IP
        u16 snoop_port;                 // Interception destination port

-       char reserved[28];              // Space to expand structure without changing HB_VERSION
+       u16 sid;                        // near end session id.
+       char reserved[20];              // Space to expand structure without changing HB_VERSION

 }
 sessiont;
 
 }
 sessiont;
 

-#define SF_IPCP_ACKED  (1<<0)          // Has this session seen an IPCP Ack?
+#define SF_IPCP_ACKED  1       // Has this session seen an IPCP Ack?
+#define SF_LCP_ACKED   2       // LCP negotiated

 
 typedef struct {
        u32     cin;
        u32     cout;
 } sessioncountt;
 
 
 typedef struct {
        u32     cin;
        u32     cout;
 } sessioncountt;
 

-#define        SESSIONPFC      1            // PFC negotiated flags
-#define        SESSIONACFC     2           // ACFC negotiated flags
+#define        SESSIONPFC      1       // PFC negotiated flags
+#define        SESSIONACFC     2       // ACFC negotiated flags

 
 // 168 bytes per tunnel
 typedef struct tunnels
 
 // 168 bytes per tunnel
 typedef struct tunnels


@@ -380,6 +397,8 @@ struct configt
        int             debug;                          // debugging level
        time_t          start_time;                     // time when l2tpns was started
        char            bandwidth[256];                 // current bandwidth
        int             debug;                          // debugging level
        time_t          start_time;                     // time when l2tpns was started
        char            bandwidth[256];                 // current bandwidth

+       char            pid_file[256];                  // file to write PID to on startup
+       int             wrote_pid;

        clockt          current_time;                   // 1/10ths of a second since the process started.
                                                        // means that we can only run a given process
                                                        // for 13 years without re-starting!
        clockt          current_time;                   // 1/10ths of a second since the process started.
                                                        // means that we can only run a given process
                                                        // for 13 years without re-starting!


@@ -396,15 +415,19 @@ struct configt
        char            radiussecret[64];
        int             radius_accounting;
        ipt             radiusserver[MAXRADSERVER];     // radius servers
        char            radiussecret[64];
        int             radius_accounting;
        ipt             radiusserver[MAXRADSERVER];     // radius servers

+       u16             radiusport[MAXRADSERVER];       // radius base ports

        u8              numradiusservers;               // radius server count
        short           num_radfds;                     // Number of radius filehandles allocated
 
        ipt             default_dns1, default_dns2;
 
        u8              numradiusservers;               // radius server count
        short           num_radfds;                     // Number of radius filehandles allocated
 
        ipt             default_dns1, default_dns2;
 

-       unsigned long   rl_rate;
+       unsigned long   rl_rate;                        // default throttle rate
+       int             num_tbfs;                       // number of throttle buckets
+

        int             save_state;
        char            accounting_dir[128];
        ipt             bind_address;
        int             save_state;
        char            accounting_dir[128];
        ipt             bind_address;

+       ipt             peer_address;

        int             send_garp;                      // Set to true to garp for vip address on startup
 
        int             target_uid;
        int             send_garp;                      // Set to true to garp for vip address on startup
 
        int             target_uid;


@@ -437,18 +460,24 @@ struct configt
        int             cluster_hb_timeout;             // How many missed heartbeats trigger an election.
 
 #ifdef BGP
        int             cluster_hb_timeout;             // How many missed heartbeats trigger an election.
 
 #ifdef BGP

+#define BGP_NUM_PEERS  2

        u16             as_number;
        u16             as_number;

-       char            bgp_peer[2][64];
-       u16             bgp_peer_as[2];
+       struct {
+               char    name[64];
+               u16     as;
+               int     keepalive;
+               int     hold;
+       }               neighbour[BGP_NUM_PEERS];

 #endif
 };
 
 #endif
 };
 

+enum config_typet { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IP, MAC };

 struct config_descriptt
 {
        char *key;
        int offset;
        int size;
 struct config_descriptt
 {
        char *key;
        int offset;
        int size;

-       enum { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IP } type;
+       enum config_typet type;

 };
 
 // arp.c
 };
 
 // arp.c


@@ -464,9 +493,8 @@ void processipin(tunnelidt t, sessionidt s, u8 * p, u16 l);
 void processccp(tunnelidt t, sessionidt s, u8 * p, u16 l);
 void sendchap(tunnelidt t, sessionidt s);
 u8 *makeppp(u8 * b, int size, u8 * p, int l, tunnelidt t, sessionidt s, u16 mtype);
 void processccp(tunnelidt t, sessionidt s, u8 * p, u16 l);
 void sendchap(tunnelidt t, sessionidt s);
 u8 *makeppp(u8 * b, int size, u8 * p, int l, tunnelidt t, sessionidt s, u16 mtype);

-u8 *findppp(u8 * b, u8 mtype);

 void initlcp(tunnelidt t, sessionidt s);
 void initlcp(tunnelidt t, sessionidt s);

-void dumplcp(u8 *p, int l);
+void send_ipin(sessionidt s, u8 * buf, int len);

 
 
 // radius.c
 
 
 // radius.c


@@ -477,88 +505,48 @@ void radiusretry(u16 r);
 u16 radiusnew(sessionidt s);
 void radiusclear(u16 r, sessionidt s);
 
 u16 radiusnew(sessionidt s);
 void radiusclear(u16 r, sessionidt s);
 

-// throttle.c
-int throttle_session(sessionidt s, int throttle);
-
-
-// rl.c
-void init_rl();
-u16 rl_create_tbf();
-u16 rl_get_tbf();
-void rl_done_tbf(u16 t);
-void rl_destroy_tbf(u16 t);
-

 
 // l2tpns.c
 
 // l2tpns.c

-clockt now(void);

 clockt backoff(u8 try);
 clockt backoff(u8 try);

-void routeset(sessionidt, ipt ip, ipt mask, ipt gw, u8 add);
-void inittun(void);
-void initudp(void);
-void initdata(void);
-void initippool();

 sessionidt sessionbyip(ipt ip);
 sessionidt sessionbyuser(char *username);
 void sessionshutdown(sessionidt s, char *reason);
 sessionidt sessionbyip(ipt ip);
 sessionidt sessionbyuser(char *username);
 void sessionshutdown(sessionidt s, char *reason);

-void sessionsendarp(sessionidt s);

 void send_garp(ipt ip);
 void send_garp(ipt ip);

-void sessionkill(sessionidt s, char *reason);
-void control16(controlt * c, u16 avp, u16 val, u8 m);
-void control32(controlt * c, u16 avp, u32 val, u8 m);
-void controls(controlt * c, u16 avp, char *val, u8 m);
-void controlb(controlt * c, u16 avp, char *val, unsigned int len, u8 m);
-controlt *controlnew(u16 mtype);
-void controlnull(tunnelidt t);
-void controladd(controlt * c, tunnelidt t, sessionidt s);

 void tunnelsend(u8 * buf, u16 l, tunnelidt t);
 void tunnelsend(u8 * buf, u16 l, tunnelidt t);

-void tunnelkill(tunnelidt t, char *reason);
-void tunnelshutdown(tunnelidt t, char *reason);

 void sendipcp(tunnelidt t, sessionidt s);
 void sendipcp(tunnelidt t, sessionidt s);

-void processipout(u8 * buf, int len);
-void processarp(u8 * buf, int len);

 void processudp(u8 * buf, int len, struct sockaddr_in *addr);
 void processudp(u8 * buf, int len, struct sockaddr_in *addr);

-void processtun(u8 * buf, int len);
-void processcontrol(u8 * buf, int len, struct sockaddr_in *addr);
-int assign_ip_address(sessionidt s);
-void free_ip_address(sessionidt s);

 void snoop_send_packet(char *packet, u16 size, ipt destination, u16 port);
 void snoop_send_packet(char *packet, u16 size, ipt destination, u16 port);

-void dump_acct_info();
-void mainloop(void);

 int cmd_show_ipcache(struct cli_def *cli, char *command, char **argv, int argc);
 int cmd_show_hist_idle(struct cli_def *cli, char *command, char **argv, int argc);
 int cmd_show_hist_open(struct cli_def *cli, char *command, char **argv, int argc);
 
 int cmd_show_ipcache(struct cli_def *cli, char *command, char **argv, int argc);
 int cmd_show_hist_idle(struct cli_def *cli, char *command, char **argv, int argc);
 int cmd_show_hist_open(struct cli_def *cli, char *command, char **argv, int argc);
 

-#define log _log
-#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
+#undef LOG
+#undef LOG_HEX
+#define LOG(D, a, s, t, f, ...)        ({ if (D <= config->debug) _log(D, a, s, t, f, ## __VA_ARGS__); })
+#define LOG_HEX(D, t, d, s)    ({ if (D <= config->debug) _log_hex(D, t, d, s); })
+

 void _log(int level, ipt address, sessionidt s, tunnelidt t, const char *format, ...) __attribute__((format (printf, 5, 6)));
 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);
+void _log_hex(int level, const char *title, const char *data, int maxsize);
+

 int sessionsetup(tunnelidt t, sessionidt s);
 int sessionsetup(tunnelidt t, sessionidt s);

-int cluster_send_session(int s);
-int cluster_send_tunnel(int t);
-int cluster_send_goodbye();
+int run_plugins(int plugin_type, void *data);
+void rebuild_address_pool(void);
+void throttle_session(sessionidt s, int rate_in, int rate_out);
+int load_session(sessionidt, sessiont *);
+void become_master(void);      // We're the master; kick off any required master initializations.
+
+
+// cli.c

 void init_cli(char *hostname);
 void cli_do_file(FILE *fh);
 void cli_do(int sockfd);
 int cli_arg_help(struct cli_def *cli, int cr_ok, char *entry, ...);
 void init_cli(char *hostname);
 void cli_do_file(FILE *fh);
 void cli_do(int sockfd);
 int cli_arg_help(struct cli_def *cli, int cr_ok, char *entry, ...);

-#ifdef RINGBUFFER
-void ringbuffer_dump(FILE *stream);
-#endif
-void initplugins(void);
-int run_plugins(int plugin_type, void *data);
-void add_plugin(char *plugin_name);
-void remove_plugin(char *plugin_name);
-void plugins_done(void);
-void tunnelclear(tunnelidt t);
+
+
+// icmp.c

 void host_unreachable(ipt destination, u16 id, ipt source, char *packet, int packet_len);
 void host_unreachable(ipt destination, u16 id, ipt source, char *packet, int packet_len);

-void fix_address_pool(int sid);
-void rebuild_address_pool(void);
-void send_ipin(sessionidt s, u8 * buf, int len);
-int throttle_session(sessionidt s, int throttle);
-int load_session(sessionidt, sessiont *);
-void become_master(void);      // We're the master; kick off any required master initializations.
+
+

 extern tunnelt *tunnel;
 extern sessiont *session;
 extern sessioncountt *sess_count;
 extern tunnelt *tunnel;
 extern sessiont *session;
 extern sessioncountt *sess_count;


@@ -570,12 +558,12 @@ if (count++ < max) { \
        void *array[20]; \
        char **strings; \
        int size, i; \
        void *array[20]; \
        char **strings; \
        int size, i; \

-       log(0, 0, 0, t, "Backtrace follows"); \
+       LOG(0, 0, 0, t, "Backtrace follows"); \

        size = backtrace(array, 10); \
        strings = backtrace_symbols(array, size); \
        if (strings) for (i = 0; i < size; i++) \
        { \
        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]); \
+               LOG(0, 0, 0, t, "%s\n", strings[i]); \

        } \
        free(strings); \
 }
        } \
        free(strings); \
 }


@@ -584,10 +572,11 @@ if (count++ < max) { \
 extern struct configt *config;
 extern time_t basetime;                // Time when this process started.
 extern time_t time_now;                // Seconds since EPOCH.
 extern struct configt *config;
 extern time_t basetime;                // Time when this process started.
 extern time_t time_now;                // Seconds since EPOCH.

-extern u32 last_sid;
+extern u32 last_id;

 extern struct Tstats *_statistics;
 extern ipt my_address;
 extern int tun_write(u8 *data, int size);
 extern struct Tstats *_statistics;
 extern ipt my_address;
 extern int tun_write(u8 *data, int size);

+extern int clifd;

 
 
 #define TIME (config->current_time)
 
 
 #define TIME (config->current_time)