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#ifndef PPP_H
#define PPP_H
#include <sys/types.h>
#include <time.h>
#include <pthread.h>
#include <netinet/in.h>
#include "triton.h"
#include "list.h"
/*
* Packet header = Code, id, length.
*/
#define PPP_HEADERLEN 4
#define PPP_MTU 1500
/*
* Protocol field values.
*/
#define PPP_IP 0x21 /* Internet Protocol */
#define PPP_AT 0x29 /* AppleTalk Protocol */
#define PPP_IPX 0x2b /* IPX protocol */
#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
#define PPP_IPV6 0x57 /* Internet Protocol Version 6 */
#define PPP_COMP 0xfd /* compressed packet */
#define PPP_IPCP 0x8021 /* IP Control Protocol */
#define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */
#define PPP_IPXCP 0x802b /* IPX Control Protocol */
#define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */
#define PPP_CCP 0x80fd /* Compression Control Protocol */
#define PPP_ECP 0x8053 /* Encryption Control Protocol */
#define PPP_LCP 0xc021 /* Link Control Protocol */
#define PPP_PAP 0xc023 /* Password Authentication Protocol */
#define PPP_LQR 0xc025 /* Link Quality Report protocol */
#define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */
#define PPP_CBCP 0xc029 /* Callback Control Protocol */
#define PPP_EAP 0xc227 /* Extensible Authentication Protocol */
#define PPP_SESSIONID_LEN 16
#define PPP_IFNAME_LEN 10
#define PPP_STATE_STARTING 1
#define PPP_STATE_ACTIVE 2
#define PPP_STATE_FINISHING 3
#define TERM_USER_REQUEST 1
#define TERM_SESSION_TIMEOUT 2
#define TERM_ADMIN_RESET 3
#define TERM_USER_ERROR 4
#define TERM_NAS_ERROR 5
#define TERM_NAS_REQUEST 6
#define TERM_NAS_REBOOT 7
#define TERM_AUTH_ERROR 8
#define TERM_LOST_CARRIER 9
#define CTRL_TYPE_PPTP 1
#define CTRL_TYPE_L2TP 2
#define CTRL_TYPE_PPPOE 3
struct ppp_t;
struct ppp_ctrl_t
{
struct triton_context_t *ctx;
int type;
const char *name;
int max_mtu;
char *calling_station_id;
char *called_station_id;
void (*started)(struct ppp_t*);
void (*finished)(struct ppp_t*);
};
struct ppp_pd_t
{
struct list_head entry;
void *key;
};
struct ppp_t
{
struct list_head entry;
struct triton_md_handler_t chan_hnd;
struct triton_md_handler_t unit_hnd;
int fd;
int chan_fd;
int unit_fd;
int chan_idx;
int unit_idx;
int state;
char *chan_name;
char ifname[PPP_IFNAME_LEN];
int ifindex;
char sessionid[PPP_SESSIONID_LEN+1];
time_t start_time;
time_t stop_time;
char *username;
in_addr_t ipaddr;
in_addr_t peer_ipaddr;
struct in6_addr ipv6_addr;
int ipv6_prefix_len;
struct ppp_ctrl_t *ctrl;
int terminating:1;
int terminated:1;
int terminate_cause;
void *buf;
int buf_size;
struct list_head chan_handlers;
struct list_head unit_handlers;
struct list_head layers;
struct ppp_lcp_t *lcp;
struct list_head pd_list;
};
struct ppp_layer_t;
struct layer_node_t;
struct ppp_layer_data_t
{
struct list_head entry;
struct ppp_layer_t *layer;
struct layer_node_t *node;
int starting:1;
int started:1;
int finished:1;
};
struct ppp_layer_t
{
struct list_head entry;
struct ppp_layer_data_t *(*init)(struct ppp_t *);
int (*start)(struct ppp_layer_data_t*);
void (*finish)(struct ppp_layer_data_t*);
void (*free)(struct ppp_layer_data_t *);
};
struct ppp_handler_t
{
struct list_head entry;
int proto;
void (*recv)(struct ppp_handler_t*);
void (*recv_proto_rej)(struct ppp_handler_t *h);
};
struct ppp_stat_t
{
unsigned int active;
unsigned int starting;
unsigned int finishing;
};
struct ppp_t *alloc_ppp(void);
void ppp_init(struct ppp_t *ppp);
int establish_ppp(struct ppp_t *ppp);
int ppp_chan_send(struct ppp_t *ppp, void *data, int size);
int ppp_unit_send(struct ppp_t *ppp, void *data, int size);
void lcp_send_proto_rej(struct ppp_t *ppp, uint16_t proto);
void ppp_recv_proto_rej(struct ppp_t *ppp, uint16_t proto);
struct ppp_fsm_t* ppp_lcp_init(struct ppp_t *ppp);
void ppp_layer_started(struct ppp_t *ppp,struct ppp_layer_data_t*);
void ppp_layer_finished(struct ppp_t *ppp,struct ppp_layer_data_t*);
void ppp_terminate(struct ppp_t *ppp, int hard, int cause);
void ppp_register_chan_handler(struct ppp_t *, struct ppp_handler_t *);
void ppp_register_unit_handler(struct ppp_t * ,struct ppp_handler_t *);
void ppp_unregister_handler(struct ppp_t *, struct ppp_handler_t *);
int ppp_register_layer(const char *name, struct ppp_layer_t *);
void ppp_unregister_layer(struct ppp_layer_t *);
struct ppp_layer_data_t *ppp_find_layer_data(struct ppp_t *, struct ppp_layer_t *);
extern int ppp_shutdown;
void ppp_shutdown_soft(void);
int ppp_ipv6_nd_start(struct ppp_t *ppp, uint64_t intf_id);
extern int conf_ppp_verbose;
extern int conf_single_session;
extern pthread_rwlock_t ppp_lock;
extern struct list_head ppp_list;
extern struct ppp_stat_t ppp_stat;
extern int sock_fd; // internet socket for ioctls
#endif
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