/*
This file is part of libcapwap.
libcapwap is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
libcapwap is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Foobar. If not, see .
*/
/**
* @file
* @brief Connection object stuff
*/
#ifndef __CONN_H
#define __CONN_H
#include
#include
#include
#include
#include "fragman.h"
#include "cwmsg.h"
#include "cwrmsg.h"
#include "wtpinfo.h"
#include "action.h"
#include "itemstore.h"
#include "intavltree.h"
#include "mbag.h"
/**
* Connection Object
*/
struct conn {
int sock;
struct sockaddr_storage addr;
int recv_timeout;
cw_itemstore_t outgoing;
cw_itemstore_t incomming;
cw_itemstore_t remote;
cw_itemstore_t local;
mbag_t radios;
/** base_mac */
bstr_t base_rmac;
/** Wireless Binding ID of this connection */
uint8_t wbid;
/** Counter for mandatory message elements */
struct avltree *mand;
/** Actionsdefs - this defines the possible actions for
this conn object, so in the end this is the specification
of the protocoll */
struct cw_actiondef *actions;
/** Current CAPWAP state */
uint8_t capwap_state;
/** The framgent manager used on this connection */
FRAGMAN *fragman;
/** Current Fragment ID */
int fragid;
int seqnum;
int last_seqnum_received;
int last_message_id_received;
struct cwmsg req_msg;
struct cwmsg resp_msg;
/** Buffer for outgoing request messages */
uint8_t req_buffer[65536];
/** Buffer for outgoing response messages */
uint8_t resp_buffer[65536];
/** Max mtu, could be changed during discovery */
int mtu;
/* 0 mtu discovery turned off, 1 discovery tuned on */
int mtu_discovery;
/* receive and send methods */
int (*recv_packet) (struct conn *, uint8_t *, int);
int (*recv_packet_peek) (struct conn *, uint8_t *, int);
int (*send_packet) (struct conn *, const uint8_t *, int);
int (*readfrom) (struct conn *, uint8_t *, int, struct sockaddr_storage *);
int (*read) (struct conn *, uint8_t *, int);
int (*write) (struct conn *, const uint8_t *, int);
/* optional packet queue */
uint8_t **q;
int qsize;
int qrpos;
int qwpos;
sem_t q_sem;
uint8_t *cur_packet;
int cur_packet_len;
int cur_packet_pos;
/* dtls stuff */
int (*dtls_start) (struct conn *);
int (*dtls_accept) (struct conn *);
char *dtls_psk;
int dtls_psk_len;
char *dtls_cert_file;
char *dtls_key_file;
char *dtls_key_pass;
void *dtls_data;
char *dtls_cipher;
int dtls_error;
uint8_t dtls_cookie[8];
int dtls_verify_peer;
uint8_t dtls_buffer[2048];
int dtls_buffer_len;
int dtls_buffer_pos;
/* capwap timers */
int retransmit_interval;
int max_retransmit;
int wait_dtls;
int wait_join;
/* used to link the conn obj with other objects */
void *data;
/** Mode */
int capwap_mode;
/** CAWAP mode for outgoing messages */
int capwap_mode_out;
int strict_capwap;
int strict_hdr;
/*
int (*request_handler) (void *);
void *request_handler_param;
*/
};
#define conn_is_strict_capwap(conn) (conn->strict_capwap)
struct conn *conn_create(int sock, struct sockaddr *addr, int qsize);
struct conn *conn_create_noq(int sock, struct sockaddr *addr);
extern int conn_send_cwmsg(struct conn *conn, struct cwmsg *cwmsg);
//extern int conn_process_packet(struct conn *conn, uint8_t * packet, int len,
// int (*cb) (void *, uint8_t *,int len), void *cbarg);
extern uint8_t *conn_get_message(struct conn *conn);
extern int conn_send_packet(struct conn *conn, const uint8_t * buffer, int len);
extern void conn_destroy(struct conn *conn);
uint8_t *conn_q_get_packet(struct conn *conn);
extern int conn_q_recv_packet(struct conn *conn, uint8_t * buffer, int len);
extern int conn_q_recv_packet_peek(struct conn *conn, uint8_t * buffer, int len);
extern int conn_recv_packet(struct conn *conn, uint8_t * buf, int len);
extern int conn_recv_packet_peek(struct conn *conn, uint8_t * buf, int len);
extern int conn_send_response(struct conn *conn, struct cwmsg *cwmsg, int seqnum);
extern struct cwrmsg *conn_get_response(struct conn *conn);
#define conn_get_next_seqnum(conn) (conn->seqnum=((conn->seqnum+1)&0xff))
#define conn_get_last_seqnum(conn) (conn->seqnum&0xff)
/* connlist stuff */
#include "avltree.h"
struct connlist {
/* struct conn ** connlist; */
struct avltree *t;
int len;
pthread_mutex_t connlist_mutex;
};
struct connlist *connlist_create(int len);
void connlist_lock(struct connlist *cl);
void connlist_unlock(struct connlist *cl);
void conlist_destroy(struct connlist *cl);
struct conn *connlist_get(struct connlist *cl, const struct sockaddr *addr);
struct conn *connlist_add(struct connlist *cl, struct conn *conn);
void connlist_remove(struct connlist *cl, struct conn *conn);
void connlist_destroy(struct connlist *cl);
void conn_q_add_packet(struct conn *conn, uint8_t * packet, int len);
struct image_identifier;
struct cwimage_data;
extern void conn_prepare_request(struct conn *conn, int type);
extern int conn_prepare_image_data_request(struct conn *conn, struct cwimage_data *,
struct image_identifier *id);
extern void conn_detect_capwap(struct conn *conn, struct wtpinfo *wtpinfo);
struct cwrmsg *conn_send_request(struct conn *conn);
struct cwrmsg *conn_wait_for_message(struct conn *conn, time_t timer);
struct cwrmsg *conn_wait_for_request(struct conn *conn, int *msglist, time_t timer);
#define conn_is_error(conn) (conn->dtls_error)
void conn_init(struct conn *conn);
extern int cw_read_messages(struct conn *conn);
extern int conn_recvfrom_packet(struct conn *conn, uint8_t * buf, int len,
struct sockaddr_storage *from);
#endif /* __CONLIST_H */