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#ifndef PPP_H
#define PPP_H
#include <sys/types.h>
#include "ppp_fsm.h"
/*
* Packet header = Code, id, length.
*/
#define PPP_HEADERLEN 4
#define PPP_MTU 1500
/*
* Timeouts.
*/
#define DEFTIMEOUT 3 /* Timeout time in seconds */
#define DEFMAXTERMREQS 2 /* Maximum Terminate-Request transmissions */
#define DEFMAXCONFREQS 10 /* Maximum Configure-Request transmissions */
#define DEFMAXNAKLOOPS 5 /* Maximum number of nak loops */
/*
* 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 */
struct ppp_t
{
struct triton_md_handler_t *h;
int fd;
int chan_fd;
int unit_fd;
int chan_idx;
int unit_idx;
char *chan_name;
int mtu,mru;
int require_mppe:1;
int require_pap:1;
int require_chap:1;
int require_mschap:1;
int require_mschap_v2:1;
int allow_mppe:1;
int allow_pap:1;
int allow_chap:1;
int allow_mschap:1;
int allow_mschap_v2:1;
int log:1;
void *out_buf;
int out_buf_size;
int out_buf_pos;
void *in_buf;
int in_buf_size;
struct ppp_layer_t *lcp_layer;
struct list_head layers;
};
struct ppp_fsm_handler_t
{
void (*reset_conf)(struct ppp_t *ppp); /* Reset our Configuration Information */
int (*conf_length)(struct ppp_t *ppp); /* Length of our Configuration Information */
void (*add_conf)(struct ppp_t *ppp, unsigned char *, int *); /* Add our Configuration Information */
int (*ack_conf)(struct ppp_t *ppp, unsigned char *,int); /* ACK our Configuration Information */
int (*nak_conf)(struct ppp_t *ppp, unsigned char *,int,int); /* NAK our Configuration Information */
int (*rej_conf)(struct ppp_t *ppp, unsigned char *,int); /* Reject our Configuration Information */
int (*req_conf)(struct ppp_t *ppp, unsigned char *,int *,int); /* Request peer's Configuration Information */
void (*opened)(struct ppp_t *ppp); /* Called when fsm reaches OPENED state */
void (*down)(struct ppp_t *ppp); /* Called when fsm leaves OPENED state */
void (*starting)(struct ppp_t *ppp); /* Called when we want the lower layer */
void (*finished)(struct ppp_t *ppp); /* Called when we don't want the lower layer */
void (*protreject)(struct ppp_t *ppp,int); /* Called when Protocol-Reject received */
void (*retransmit)(struct ppp_t *ppp); /* Retransmission is necessary */
int (*extcode)(struct ppp_t *ppp, int, int, unsigned char *, int); /* Called when unknown code received */
char *proto_name; /* String name for protocol (for messages) */
};
struct ppp_hdr_t
{
u_int8_t code;
u_int8_t id;
u_int16_t len;
u_int8_t data[100];
}__attribute__((packed));
struct ppp_opt_t
{
u_int8_t type;
u_int16_t len;
u_int8_t data[100];
}__attribute__((packed));
struct ppp_t *alloc_ppp(void);
int establish_ppp(struct ppp_t *ppp);
int ppp_send(struct ppp_t *ppp, void *data, int size);
void ppp_init(void);
struct ppp_layer_t* ppp_lcp_init(struct ppp_t *ppp);
#endif
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