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packet.h
/*
* This file is part of the SSH Library
*
* Copyright (c) 2009 by Aris Adamantiadis
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef PACKET_H_
#define PACKET_H_
#include "libssh/wrapper.h"
struct ssh_socket_struct;
/* this structure should go someday */
typedef struct packet_struct {
int valid;
uint32_t len;
uint8_t type;
} PACKET;
enum ssh_packet_state_e {
PACKET_STATE_INIT,
PACKET_STATE_SIZEREAD,
PACKET_STATE_PROCESSING
};
enum ssh_packet_filter_result_e {
SSH_PACKET_UNKNOWN,
SSH_PACKET_ALLOWED,
SSH_PACKET_DENIED
};
int ssh_packet_send(ssh_session session);
#ifdef __cplusplus
extern "C" {
#endif
SSH_PACKET_CALLBACK(ssh_packet_unimplemented);
SSH_PACKET_CALLBACK(ssh_packet_disconnect_callback);
SSH_PACKET_CALLBACK(ssh_packet_ignore_callback);
SSH_PACKET_CALLBACK(ssh_packet_debug_callback);
SSH_PACKET_CALLBACK(ssh_packet_dh_reply);
SSH_PACKET_CALLBACK(ssh_packet_newkeys);
SSH_PACKET_CALLBACK(ssh_packet_service_accept);
SSH_PACKET_CALLBACK(ssh_packet_ext_info);
#ifdef WITH_SERVER
SSH_PACKET_CALLBACK(ssh_packet_kexdh_init);
#endif
int ssh_packet_send_newkeys(ssh_session session);
int ssh_packet_send_unimplemented(ssh_session session, uint32_t seqnum);
int ssh_packet_parse_type(ssh_session session);
//int packet_flush(ssh_session session, int enforce_blocking);
size_t ssh_packet_socket_callback(const void *data, size_t len, void *user);
void ssh_packet_register_socket_callback(ssh_session session, struct ssh_socket_struct *s);
void ssh_packet_set_callbacks(ssh_session session, ssh_packet_callbacks callbacks);
void ssh_packet_remove_callbacks(ssh_session session, ssh_packet_callbacks callbacks);
void ssh_packet_set_default_callbacks(ssh_session session);
void ssh_packet_process(ssh_session session, uint8_t type);
/* PACKET CRYPT */
uint32_t ssh_packet_decrypt_len(ssh_session session, uint8_t *destination, uint8_t *source);
int ssh_packet_decrypt(ssh_session session, uint8_t *destination, uint8_t *source,
size_t start, size_t encrypted_size);
unsigned char *ssh_packet_encrypt(ssh_session session,
void *packet,
size_t len);
int ssh_packet_hmac_verify(ssh_session session, const void *data, size_t len,
unsigned char *mac, enum ssh_hmac_e type);
int ssh_packet_set_newkeys(ssh_session session,
enum ssh_crypto_direction_e direction);
struct ssh_crypto_struct *ssh_packet_get_current_crypto(ssh_session session,
enum ssh_crypto_direction_e direction);
#ifdef __cplusplus
}
#endif
#endif /* PACKET_H_ */
SSH_PACKET_CALLBACK
#define SSH_PACKET_CALLBACK(name)
This macro declares a packet callback handler.
Definition callbacks.h:624