X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/10b6ddcfc1600dfdfe2390350970ff399939f1d7..fe88ed6ee5df2c03715d8d93852dd4247fc462b7:/l2tpns.h diff --git a/l2tpns.h b/l2tpns.h index 724a959..890aab1 100644 --- a/l2tpns.h +++ b/l2tpns.h @@ -1,5 +1,5 @@ // L2TPNS Global Stuff -// $Id: l2tpns.h,v 1.75 2005/06/02 11:32:31 bodea Exp $ +// $Id: l2tpns.h,v 1.82 2005/08/10 11:25:56 bodea Exp $ #ifndef __L2TPNS_H__ #define __L2TPNS_H__ @@ -15,7 +15,7 @@ #include #include -#define VERSION "2.1.0" +#define VERSION "2.1.2" // Limits #define MAXTUNNEL 500 // could be up to 65535 @@ -23,6 +23,7 @@ #define MAXTBFS 6000 // Maximum token bucket filters. Might need up to 2 * session. #define RADIUS_SHIFT 6 +#define RADIUS_FDS (1 << RADIUS_SHIFT) #define RADIUS_MASK ((1 << RADIUS_SHIFT) - 1) #define MAXRADIUS (1 << (8 + RADIUS_SHIFT)) @@ -71,13 +72,14 @@ #define CONFIGFILE FLASHDIR "/startup-config" // Configuration file #define CLIUSERS FLASHDIR "/users" // CLI Users file #define IPPOOLFILE FLASHDIR "/ip_pool" // Address pool configuration -#define ACCT_TIME 3000 // 5 minute accounting interval -#define ACCT_SHUT_TIME 600 // 1 minute for counters of shutdown sessions -#define L2TPPORT 1701 // L2TP port -#define RADPORT 1645 // old radius port... -#define PKTARP 0x0806 // ARP packet type -#define PKTIP 0x0800 // IPv4 packet type -#define PKTIPV6 0x86DD // IPv6 packet type +#define ACCT_TIME 3000 // 5 minute accounting interval +#define ACCT_SHUT_TIME 600 // 1 minute for counters of shutdown sessions +#define L2TPPORT 1701 // L2TP port +#define RADPORT 1645 // old radius port... +#define DAEPORT 3799 // DAE port +#define PKTARP 0x0806 // ARP packet type +#define PKTIP 0x0800 // IPv4 packet type +#define PKTIPV6 0x86DD // IPv6 packet type #define PPPPAP 0xC023 #define PPPCHAP 0xC223 #define PPPLCP 0xC021 @@ -110,9 +112,61 @@ enum { AccessReject, AccountingRequest, AccountingResponse, - AccessChallenge = 11 + AccessChallenge = 11, + DisconnectRequest = 40, + DisconnectACK, + DisconnectNAK, + CoARequest, + CoAACK, + CoANAK }; +// PPP phases +enum { + Dead, + Establish, + Authenticate, + Network, + Terminate +}; + +// PPP states +enum { + Initial, + Starting, + Closed, + Stopped, + Closing, + Stopping, + RequestSent, + AckReceived, + AckSent, + Opened +}; + +// reset state machine counters +#define initialise_restart_count(_s, _fsm) \ + sess_local[_s]._fsm.conf_sent = sess_local[_s]._fsm.nak_sent + +// stop timer on change to state where timer does not run +#define change_state(_s, _fsm, _new) ({ \ + if (_new != session[_s].ppp._fsm) \ + { \ + switch (_new) \ + { \ + case Initial: \ + case Starting: \ + case Closed: \ + case Stopped: \ + case Opened: \ + sess_local[_s]._fsm.restart = 0; \ + initialise_restart_count(_s, _fsm); \ + } \ + session[_s].ppp._fsm = _new; \ + cluster_send_session(_s); \ + } \ +}) + // Types typedef uint16_t sessionidt; typedef uint16_t tunnelidt; @@ -166,7 +220,14 @@ typedef struct sessionidt far; // far end session ID tunnelidt tunnel; // near end tunnel ID uint8_t l2tp_flags; // various bit flags from the ICCN on the l2tp tunnel. - uint8_t flags; // Various session flags. + struct { + uint8_t phase; // PPP phase + uint8_t lcp:4; // LCP state + uint8_t ipcp:4; // IPCP state + uint8_t ipv6cp:4; // IPV6CP state + uint8_t ccp:4; // CCP state + uint8_t pad; // unused + } ppp; in_addr_t ip; // IP of session set by RADIUS response (host byte order). int ip_pool_index; // index to IP pool uint32_t unique_id; // unique session id @@ -190,7 +251,7 @@ typedef struct uint16_t tbf_in; // filter bucket for throttling in from the user. uint16_t tbf_out; // filter bucket for throttling out to the user. int random_vector_length; - char random_vector[MAXTEL]; + uint8_t random_vector[MAXTEL]; char user[MAXUSER]; // user (needed in seesion for radius stop messages) char called[MAXTEL]; // called number char calling[MAXTEL]; // calling number @@ -201,17 +262,10 @@ typedef struct uint8_t walled_garden; // is this session gardened? uint8_t ipv6prefixlen; // IPv6 route prefix length struct in6_addr ipv6route; // Static IPv6 route - char reserved[16]; // Space to expand structure without changing HB_VERSION + char reserved[11]; // Space to expand structure without changing HB_VERSION } sessiont; -#define SF_IPCP_ACKED 1 // Has this session seen an IPCP Ack? -#define SF_LCP_ACKED 2 // LCP negotiated -#define SF_CCP_ACKED 4 // CCP negotiated -#define SF_IPV6CP_ACKED 8 // IPv6 negotiated -#define SF_IPV6_NACKED 16 // IPv6 rejected -#define SF_IPV6_ROUTED 32 // advertised v6 route - #define AUTHPAP 1 // allow PAP #define AUTHCHAP 2 // allow CHAP @@ -225,6 +279,16 @@ typedef struct uint32_t cin; uint32_t cout; + // PPP restart timer/counters + struct { + time_t restart; + int conf_sent; + int nak_sent; + } lcp, ipcp, ipv6cp, ccp; + + // authentication to use + int lcp_authtype; + // DoS prevention clockt last_packet_out; uint32_t packets_out; @@ -263,13 +327,12 @@ typedef struct } tunnelt; -// 180 bytes per radius session +// 160 bytes per radius session typedef struct // 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 uint8_t id; // ID for PPP response uint8_t try; // which try we are on @@ -320,7 +383,6 @@ enum RADIUSNULL, // Not in use RADIUSCHAP, // sending CHAP down PPP RADIUSAUTH, // sending auth to RADIUS server - RADIUSIPCP, // sending IPCP to end user RADIUSSTART, // sending start accounting to RADIUS server RADIUSSTOP, // sending stop accounting to RADIUS server RADIUSINTERIM, // sending interim accounting to RADIUS server @@ -383,6 +445,7 @@ struct Tstats uint32_t call_sessionbyuser; uint32_t call_sendarp; uint32_t call_sendipcp; + uint32_t call_sendipv6cp; uint32_t call_processipv6cp; uint32_t call_tunnelsend; uint32_t call_sessionkill; @@ -449,13 +512,18 @@ typedef struct char random_device[256]; // random device path, defaults to RANDOMDEVICE + int ppp_restart_time; // timeout for PPP restart + int ppp_max_configure; // max lcp configure requests to send + int ppp_max_failure; // max lcp configure naks to send + char radiussecret[64]; int radius_accounting; int radius_interim; in_addr_t radiusserver[MAXRADSERVER]; // radius servers uint16_t radiusport[MAXRADSERVER]; // radius base ports uint8_t numradiusservers; // radius server count - short num_radfds; // Number of radius filehandles allocated + + uint16_t radius_dae_port; // local port for radius dae char radius_authtypes_s[32]; // list of valid authentication types (chap, pap) in order of preference int radius_authtypes; @@ -590,18 +658,20 @@ void sendarp(int ifr_idx, const unsigned char* mac, in_addr_t ip); // ppp.c -void processpap(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l); -void processchap(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l); -void processlcp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l); -void processipcp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l); -void processipv6cp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l); -void processipin(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l); -void processipv6in(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l); -void processccp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l); -void sendchap(tunnelidt t, sessionidt s); -uint8_t *makeppp(uint8_t *b, int size, uint8_t *p, int l, tunnelidt t, sessionidt s, uint16_t mtype); -void sendlcp(tunnelidt t, sessionidt s, int authtype); +void processpap(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); +void processchap(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); +void lcp_open(sessionidt s, tunnelidt t); +void processlcp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); +void processipcp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); +void processipv6cp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); +void processipin(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); +void processipv6in(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); +void processccp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); +void sendchap(sessionidt s, tunnelidt t); +uint8_t *makeppp(uint8_t *b, int size, uint8_t *p, int l, sessionidt s, tunnelidt t, uint16_t mtype); +void sendlcp(sessionidt s, tunnelidt t, int authtype); void send_ipin(sessionidt s, uint8_t *buf, int len); +void sendccp(sessionidt s, tunnelidt t); // radius.c @@ -611,11 +681,12 @@ void processrad(uint8_t *buf, int len, char socket_index); void radiusretry(uint16_t r); uint16_t radiusnew(sessionidt s); void radiusclear(uint16_t r, sessionidt s); +void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen); // l2tpns.c clockt backoff(uint8_t try); -void send_ipv6_ra(tunnelidt t, sessionidt s, struct in6_addr *ip); +void send_ipv6_ra(sessionidt s, tunnelidt t, struct in6_addr *ip); void route6set(sessionidt s, struct in6_addr ip, int prefixlen, int add); sessionidt sessionbyip(in_addr_t ip); sessionidt sessionbyipv6(struct in6_addr ip); @@ -624,11 +695,14 @@ void increment_counter(uint32_t *counter, uint32_t *wrap, uint32_t delta); void random_data(uint8_t *buf, int len); void sessionkill(sessionidt s, char *reason); void sessionshutdown(sessionidt s, char *reason, int result, int error); +void filter_session(sessionidt s, int filter_in, int filter_out); void send_garp(in_addr_t ip); void tunnelsend(uint8_t *buf, uint16_t l, tunnelidt t); -void sendipcp(tunnelidt t, sessionidt s); +void sendipcp(sessionidt s, tunnelidt t); +void sendipv6cp(sessionidt s, tunnelidt t); void processudp(uint8_t *buf, int len, struct sockaddr_in *addr); -void snoop_send_packet(char *packet, uint16_t size, in_addr_t destination, uint16_t port); +void snoop_send_packet(uint8_t *packet, uint16_t size, in_addr_t destination, uint16_t port); +int find_filter(char const *name, size_t len); int ip_filter(uint8_t *buf, int len, uint8_t filter); 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); @@ -640,9 +714,9 @@ int cmd_show_hist_open(struct cli_def *cli, char *command, char **argv, int argc #define LOG_HEX(D, t, d, s) ({ if (D <= config->debug) _log_hex(D, t, d, s); }) void _log(int level, sessionidt s, tunnelidt t, const char *format, ...) __attribute__((format (printf, 4, 5))); -void _log_hex(int level, const char *title, const char *data, int maxsize); +void _log_hex(int level, const char *title, const uint8_t *data, int maxsize); -int sessionsetup(tunnelidt t, sessionidt s); +int sessionsetup(sessionidt s, tunnelidt t); int run_plugins(int plugin_type, void *data); void rebuild_address_pool(void); void throttle_session(sessionidt s, int rate_in, int rate_out); @@ -658,7 +732,7 @@ int cli_arg_help(struct cli_def *cli, int cr_ok, char *entry, ...); // icmp.c -void host_unreachable(in_addr_t destination, uint16_t id, in_addr_t source, char *packet, int packet_len); +void host_unreachable(in_addr_t destination, uint16_t id, in_addr_t source, uint8_t *packet, int packet_len); extern tunnelt *tunnel; @@ -672,12 +746,12 @@ if (count++ < max) { \ void *array[20]; \ char **strings; \ int size, i; \ - LOG(0, 0, t, "Backtrace follows"); \ + LOG(0, 0, t, "Backtrace follows:\n"); \ size = backtrace(array, 10); \ strings = backtrace_symbols(array, size); \ if (strings) for (i = 0; i < size; i++) \ { \ - LOG(0, 0, t, "%s\n", strings[i]); \ + LOG(0, 0, t, " %s\n", strings[i]); \ } \ free(strings); \ } @@ -692,7 +766,21 @@ extern struct Tstats *_statistics; extern in_addr_t my_address; extern int tun_write(uint8_t *data, int size); extern int clifd; - +extern int epollfd; + +struct event_data { + enum { + FD_TYPE_CLI, + FD_TYPE_CLUSTER, + FD_TYPE_TUN, + FD_TYPE_UDP, + FD_TYPE_CONTROL, + FD_TYPE_DAE, + FD_TYPE_RADIUS, + FD_TYPE_BGP, + } type; + int index; // for RADIUS, BGP +}; #define TIME (config->current_time)