mirror of
git://anongit.mindrot.org/openssh.git
synced 2024-12-18 08:04:40 +00:00
137 lines
4.3 KiB
C
137 lines
4.3 KiB
C
/* $OpenBSD: ssh_api.h,v 1.1 2015/01/19 20:30:23 markus Exp $ */
|
|
/*
|
|
* Copyright (c) 2012 Markus Friedl. All rights reserved.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#ifndef API_H
|
|
#define API_H
|
|
|
|
#include <sys/queue.h>
|
|
#include <sys/types.h>
|
|
#include <signal.h>
|
|
|
|
#include "cipher.h"
|
|
#include "sshkey.h"
|
|
#include "kex.h"
|
|
#include "ssh.h"
|
|
#include "ssh2.h"
|
|
#include "packet.h"
|
|
|
|
struct kex_params {
|
|
char *proposal[PROPOSAL_MAX];
|
|
};
|
|
|
|
/* public SSH API functions */
|
|
|
|
/*
|
|
* ssh_init() create a ssh connection object with given (optional)
|
|
* key exchange parameters.
|
|
*/
|
|
int ssh_init(struct ssh **, int is_server, struct kex_params *kex_params);
|
|
|
|
/*
|
|
* release ssh connection state.
|
|
*/
|
|
void ssh_free(struct ssh *);
|
|
|
|
/*
|
|
* attach application specific data to the connection state
|
|
*/
|
|
void ssh_set_app_data(struct ssh *, void *);
|
|
void *ssh_get_app_data(struct ssh *);
|
|
|
|
/*
|
|
* ssh_add_hostkey() registers a private/public hostkey for an ssh
|
|
* connection.
|
|
* ssh_add_hostkey() needs to be called before a key exchange is
|
|
* initiated with ssh_packet_next().
|
|
* private hostkeys are required if we need to act as a server.
|
|
* public hostkeys are used to verify the servers hostkey.
|
|
*/
|
|
int ssh_add_hostkey(struct ssh *ssh, struct sshkey *key);
|
|
|
|
/*
|
|
* ssh_set_verify_host_key_callback() registers a callback function
|
|
* which should be called instead of the default verification. The
|
|
* function given must return 0 if the hostkey is ok, -1 if the
|
|
* verification has failed.
|
|
*/
|
|
int ssh_set_verify_host_key_callback(struct ssh *ssh,
|
|
int (*cb)(struct sshkey *, struct ssh *));
|
|
|
|
/*
|
|
* ssh_packet_next() advances to the next input packet and returns
|
|
* the packet type in typep.
|
|
* ssh_packet_next() works by processing an input byte-stream,
|
|
* decrypting the received data and hiding the key-exchange from
|
|
* the caller.
|
|
* ssh_packet_next() sets typep if there is no new packet available.
|
|
* in this case the caller must fill the input byte-stream by passing
|
|
* the data received over network to ssh_input_append().
|
|
* additinally, the caller needs to send the resulting output
|
|
* byte-stream back over the network. otherwise the key exchange
|
|
* would not proceed. the output byte-stream is accessed through
|
|
* ssh_output_ptr().
|
|
*/
|
|
int ssh_packet_next(struct ssh *ssh, u_char *typep);
|
|
|
|
/*
|
|
* ssh_packet_payload() returns a pointer to the raw payload data of
|
|
* the current input packet and the length of this payload.
|
|
* the payload is accessible until ssh_packet_next() is called again.
|
|
*/
|
|
const u_char *ssh_packet_payload(struct ssh *ssh, size_t *lenp);
|
|
|
|
/*
|
|
* ssh_packet_put() creates an encrypted packet with the given type
|
|
* and payload.
|
|
* the encrypted packet is appended to the output byte-stream.
|
|
*/
|
|
int ssh_packet_put(struct ssh *ssh, int type, const u_char *data,
|
|
size_t len);
|
|
|
|
/*
|
|
* ssh_input_space() checks if 'len' bytes can be appended to the
|
|
* input byte-stream.
|
|
*/
|
|
int ssh_input_space(struct ssh *ssh, size_t len);
|
|
|
|
/*
|
|
* ssh_input_append() appends data to the input byte-stream.
|
|
*/
|
|
int ssh_input_append(struct ssh *ssh, const u_char *data, size_t len);
|
|
|
|
/*
|
|
* ssh_output_space() checks if 'len' bytes can be appended to the
|
|
* output byte-stream. XXX
|
|
*/
|
|
int ssh_output_space(struct ssh *ssh, size_t len);
|
|
|
|
/*
|
|
* ssh_output_ptr() retrieves both a pointer and the length of the
|
|
* current output byte-stream. the bytes need to be sent over the
|
|
* network. the number of bytes that have been successfully sent can
|
|
* be removed from the output byte-stream with ssh_output_consume().
|
|
*/
|
|
const u_char *ssh_output_ptr(struct ssh *ssh, size_t *len);
|
|
|
|
/*
|
|
* ssh_output_consume() removes the given number of bytes from
|
|
* the output byte-stream.
|
|
*/
|
|
int ssh_output_consume(struct ssh *ssh, size_t len);
|
|
|
|
#endif
|