libssh  0.10.90
The SSH library
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server.h
1/* Public include file for server support */
2/*
3 * This file is part of the SSH Library
4 *
5 * Copyright (c) 2003-2008 by Aris Adamantiadis
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
28#ifndef SERVER_H
29#define SERVER_H
30
31#include "libssh/libssh.h"
32#define SERVERBANNER CLIENTBANNER
33
34#ifdef __cplusplus
35extern "C" {
36#endif
37
38enum ssh_bind_options_e {
39 SSH_BIND_OPTIONS_BINDADDR,
40 SSH_BIND_OPTIONS_BINDPORT,
41 SSH_BIND_OPTIONS_BINDPORT_STR,
42 SSH_BIND_OPTIONS_HOSTKEY,
43 SSH_BIND_OPTIONS_DSAKEY, /* deprecated */
44 SSH_BIND_OPTIONS_RSAKEY, /* deprecated */
45 SSH_BIND_OPTIONS_BANNER,
46 SSH_BIND_OPTIONS_LOG_VERBOSITY,
47 SSH_BIND_OPTIONS_LOG_VERBOSITY_STR,
48 SSH_BIND_OPTIONS_ECDSAKEY, /* deprecated */
49 SSH_BIND_OPTIONS_IMPORT_KEY,
50 SSH_BIND_OPTIONS_KEY_EXCHANGE,
51 SSH_BIND_OPTIONS_CIPHERS_C_S,
52 SSH_BIND_OPTIONS_CIPHERS_S_C,
53 SSH_BIND_OPTIONS_HMAC_C_S,
54 SSH_BIND_OPTIONS_HMAC_S_C,
55 SSH_BIND_OPTIONS_CONFIG_DIR,
56 SSH_BIND_OPTIONS_PUBKEY_ACCEPTED_KEY_TYPES,
57 SSH_BIND_OPTIONS_HOSTKEY_ALGORITHMS,
58 SSH_BIND_OPTIONS_PROCESS_CONFIG,
59 SSH_BIND_OPTIONS_MODULI,
60 SSH_BIND_OPTIONS_RSA_MIN_SIZE,
61};
62
63typedef struct ssh_bind_struct* ssh_bind;
64
65/* Callback functions */
66
73typedef void (*ssh_bind_incoming_connection_callback) (ssh_bind sshbind,
74 void *userdata);
75
88
94LIBSSH_API ssh_bind ssh_bind_new(void);
95
96LIBSSH_API int ssh_bind_options_set(ssh_bind sshbind,
97 enum ssh_bind_options_e type, const void *value);
98
99LIBSSH_API int ssh_bind_options_parse_config(ssh_bind sshbind,
100 const char *filename);
101
109LIBSSH_API int ssh_bind_listen(ssh_bind ssh_bind_o);
110
131LIBSSH_API int ssh_bind_set_callbacks(ssh_bind sshbind, ssh_bind_callbacks callbacks,
132 void *userdata);
133
141LIBSSH_API void ssh_bind_set_blocking(ssh_bind ssh_bind_o, int blocking);
142
150LIBSSH_API socket_t ssh_bind_get_fd(ssh_bind ssh_bind_o);
151
159LIBSSH_API void ssh_bind_set_fd(ssh_bind ssh_bind_o, socket_t fd);
160
166LIBSSH_API void ssh_bind_fd_toaccept(ssh_bind ssh_bind_o);
167
176LIBSSH_API int ssh_bind_accept(ssh_bind ssh_bind_o, ssh_session session);
177
190LIBSSH_API int ssh_bind_accept_fd(ssh_bind ssh_bind_o, ssh_session session,
191 socket_t fd);
192
193LIBSSH_API ssh_gssapi_creds ssh_gssapi_get_creds(ssh_session session);
194
202LIBSSH_API int ssh_handle_key_exchange(ssh_session session);
203
220LIBSSH_API int ssh_server_init_kex(ssh_session session);
221
230LIBSSH_API void ssh_bind_free(ssh_bind ssh_bind_o);
231
249LIBSSH_API void ssh_set_auth_methods(ssh_session session, int auth_methods);
250
261LIBSSH_API int ssh_send_issue_banner(ssh_session session, const ssh_string banner);
262
263/**********************************************************
264 * SERVER MESSAGING
265 **********************************************************/
266
279LIBSSH_API int ssh_message_reply_default(ssh_message msg);
280
291LIBSSH_API const char *ssh_message_auth_user(ssh_message msg);
292
305SSH_DEPRECATED LIBSSH_API const char *ssh_message_auth_password(ssh_message msg);
306
323SSH_DEPRECATED LIBSSH_API ssh_key ssh_message_auth_pubkey(ssh_message msg);
324
325LIBSSH_API int ssh_message_auth_kbdint_is_response(ssh_message msg);
326
333SSH_DEPRECATED LIBSSH_API enum ssh_publickey_state_e ssh_message_auth_publickey_state(ssh_message msg);
334
335LIBSSH_API int ssh_message_auth_reply_success(ssh_message msg,int partial);
336LIBSSH_API int ssh_message_auth_reply_pk_ok(ssh_message msg, ssh_string algo, ssh_string pubkey);
337LIBSSH_API int ssh_message_auth_reply_pk_ok_simple(ssh_message msg);
338
339LIBSSH_API int ssh_message_auth_set_methods(ssh_message msg, int methods);
340
341LIBSSH_API int ssh_message_auth_interactive_request(ssh_message msg,
342 const char *name, const char *instruction,
343 unsigned int num_prompts, const char **prompts, char *echo);
344
345LIBSSH_API int ssh_message_service_reply_success(ssh_message msg);
346LIBSSH_API const char *ssh_message_service_service(ssh_message msg);
347
348LIBSSH_API int ssh_message_global_request_reply_success(ssh_message msg,
349 uint16_t bound_port);
350
351LIBSSH_API void ssh_set_message_callback(ssh_session session,
352 int(*ssh_bind_message_callback)(ssh_session session, ssh_message msg, void *data),
353 void *data);
354LIBSSH_API int ssh_execute_message_callbacks(ssh_session session);
355
356LIBSSH_API const char *ssh_message_channel_request_open_originator(ssh_message msg);
357LIBSSH_API int ssh_message_channel_request_open_originator_port(ssh_message msg);
358LIBSSH_API const char *ssh_message_channel_request_open_destination(ssh_message msg);
359LIBSSH_API int ssh_message_channel_request_open_destination_port(ssh_message msg);
360
361LIBSSH_API ssh_channel ssh_message_channel_request_channel(ssh_message msg);
362
363/* Replaced by callback based server implementation function channel_pty_request_function*/
364SSH_DEPRECATED LIBSSH_API const char *ssh_message_channel_request_pty_term(ssh_message msg);
365SSH_DEPRECATED LIBSSH_API int ssh_message_channel_request_pty_width(ssh_message msg);
366SSH_DEPRECATED LIBSSH_API int ssh_message_channel_request_pty_height(ssh_message msg);
367SSH_DEPRECATED LIBSSH_API int ssh_message_channel_request_pty_pxwidth(ssh_message msg);
368SSH_DEPRECATED LIBSSH_API int ssh_message_channel_request_pty_pxheight(ssh_message msg);
369
370LIBSSH_API const char *ssh_message_channel_request_env_name(ssh_message msg);
371LIBSSH_API const char *ssh_message_channel_request_env_value(ssh_message msg);
372
373LIBSSH_API const char *ssh_message_channel_request_command(ssh_message msg);
374
375LIBSSH_API const char *ssh_message_channel_request_subsystem(ssh_message msg);
376
377/* Replaced by callback based server implementation function channel_open_request_x11_function*/
378SSH_DEPRECATED LIBSSH_API int ssh_message_channel_request_x11_single_connection(ssh_message msg);
379SSH_DEPRECATED LIBSSH_API const char *ssh_message_channel_request_x11_auth_protocol(ssh_message msg);
380SSH_DEPRECATED LIBSSH_API const char *ssh_message_channel_request_x11_auth_cookie(ssh_message msg);
381SSH_DEPRECATED LIBSSH_API int ssh_message_channel_request_x11_screen_number(ssh_message msg);
382
383LIBSSH_API const char *ssh_message_global_request_address(ssh_message msg);
384LIBSSH_API int ssh_message_global_request_port(ssh_message msg);
385
386LIBSSH_API int ssh_channel_open_reverse_forward(ssh_channel channel, const char *remotehost,
387 int remoteport, const char *sourcehost, int localport);
388LIBSSH_API int ssh_channel_open_x11(ssh_channel channel,
389 const char *orig_addr, int orig_port);
390
391LIBSSH_API int ssh_channel_request_send_exit_status(ssh_channel channel,
392 int exit_status);
393LIBSSH_API int ssh_channel_request_send_exit_signal(ssh_channel channel,
394 const char *signum,
395 int core,
396 const char *errmsg,
397 const char *lang);
398
399LIBSSH_API int ssh_send_keepalive(ssh_session session);
400
401/* deprecated functions */
402SSH_DEPRECATED LIBSSH_API int ssh_accept(ssh_session session);
403SSH_DEPRECATED LIBSSH_API int channel_write_stderr(ssh_channel channel,
404 const void *data, uint32_t len);
405
406#ifdef __cplusplus
407}
408#endif /* __cplusplus */
409
410#endif /* SERVER_H */
411
LIBSSH_API int ssh_bind_accept_fd(ssh_bind ssh_bind_o, ssh_session session, socket_t fd)
Accept an incoming ssh connection on the given file descriptor and initialize the session.
Definition bind.c:394
LIBSSH_API int ssh_server_init_kex(ssh_session session)
Initialize the set of key exchange, hostkey, ciphers, MACs, and compression algorithms for the given ...
Definition server.c:199
LIBSSH_API socket_t ssh_bind_get_fd(ssh_bind ssh_bind_o)
Recover the file descriptor from the session.
Definition bind.c:343
LIBSSH_API int ssh_message_auth_reply_pk_ok(ssh_message msg, ssh_string algo, ssh_string pubkey)
Answer SSH2_MSG_USERAUTH_PK_OK to a pubkey authentication request.
Definition server.c:1104
LIBSSH_API ssh_bind ssh_bind_new(void)
Creates a new SSH server bind.
Definition bind.c:135
LIBSSH_API int ssh_message_auth_kbdint_is_response(ssh_message msg)
Check if the message is a keyboard-interactive response.
Definition server.c:894
LIBSSH_API int ssh_bind_accept(ssh_bind ssh_bind_o, ssh_session session)
Accept an incoming ssh connection and initialize the session.
Definition bind.c:538
LIBSSH_API int ssh_message_reply_default(ssh_message msg)
Reply with a standard reject message.
Definition server.c:808
LIBSSH_API int ssh_channel_request_send_exit_status(ssh_channel channel, int exit_status)
Send the exit status to the remote process.
Definition channels.c:3793
void(* ssh_bind_incoming_connection_callback)(ssh_bind sshbind, void *userdata)
Incoming connection callback. This callback is called when a ssh_bind has a new incoming connection.
Definition server.h:73
LIBSSH_API int ssh_bind_options_set(ssh_bind sshbind, enum ssh_bind_options_e type, const void *value)
Set options for an SSH server bind.
Definition options.c:2005
SSH_DEPRECATED LIBSSH_API ssh_key ssh_message_auth_pubkey(ssh_message msg)
Get the publickey of the authenticated user.
Definition server.c:864
LIBSSH_API int ssh_message_auth_reply_pk_ok_simple(ssh_message msg)
Answer SSH2_MSG_USERAUTH_PK_OK to a pubkey authentication request.
Definition server.c:1131
LIBSSH_API int ssh_message_global_request_reply_success(ssh_message msg, uint16_t bound_port)
Send a global request success message.
Definition server.c:756
LIBSSH_API const char * ssh_message_service_service(ssh_message msg)
Gets the service name from the service request message.
Definition server.c:841
LIBSSH_API int ssh_send_keepalive(ssh_session session)
Sends a keepalive message to the session.
Definition server.c:1288
LIBSSH_API void ssh_bind_free(ssh_bind ssh_bind_o)
Free a ssh servers bind.
Definition bind.c:355
LIBSSH_API int ssh_bind_set_callbacks(ssh_bind sshbind, ssh_bind_callbacks callbacks, void *userdata)
Set the callback for this bind.
Definition bind.c:275
LIBSSH_API int ssh_channel_open_x11(ssh_channel channel, const char *orig_addr, int orig_port)
Open a X11 channel.
Definition channels.c:3735
SSH_DEPRECATED LIBSSH_API const char * ssh_message_auth_password(ssh_message msg)
Get the password of the authenticated user.
Definition server.c:856
LIBSSH_API int ssh_handle_key_exchange(ssh_session session)
Handles the key exchange and set up encryption.
Definition server.c:564
LIBSSH_API void ssh_bind_fd_toaccept(ssh_bind ssh_bind_o)
Allow the file descriptor to accept new sessions.
Definition bind.c:351
LIBSSH_API int ssh_message_auth_set_methods(ssh_message msg, int methods)
Sets the supported authentication methods to a message.
Definition server.c:914
LIBSSH_API ssh_gssapi_creds ssh_gssapi_get_creds(ssh_session session)
returns the client credentials of the connected client. If the client has given a forwardable token,...
Definition gssapi.c:598
LIBSSH_API void ssh_set_auth_methods(ssh_session session, int auth_methods)
Set the acceptable authentication methods to be sent to the client.
Definition server.c:532
LIBSSH_API int ssh_channel_request_send_exit_signal(ssh_channel channel, const char *signum, int core, const char *errmsg, const char *lang)
Send an exit signal to remote process (RFC 4254, section 6.10).
Definition channels.c:3837
LIBSSH_API void ssh_bind_set_fd(ssh_bind ssh_bind_o, socket_t fd)
Set the file descriptor for a session.
Definition bind.c:347
LIBSSH_API void ssh_set_message_callback(ssh_session session, int(*ssh_bind_message_callback)(ssh_session session, ssh_message msg, void *data), void *data)
defines the ssh_message callback
Definition server.c:1244
LIBSSH_API const char * ssh_message_auth_user(ssh_message msg)
Get the name of the authenticated user.
Definition server.c:848
LIBSSH_API int ssh_message_service_reply_success(ssh_message msg)
Sends SERVICE_ACCEPT to the client.
Definition server.c:723
LIBSSH_API int ssh_channel_open_reverse_forward(ssh_channel channel, const char *remotehost, int remoteport, const char *sourcehost, int localport)
Open a TCP/IP reverse forwarding channel.
Definition channels.c:3671
LIBSSH_API int ssh_bind_options_parse_config(ssh_bind sshbind, const char *filename)
Parse a ssh bind options configuration file.
Definition options.c:2499
LIBSSH_API int ssh_send_issue_banner(ssh_session session, const ssh_string banner)
Send the server's issue-banner to client.
Definition server.c:538
LIBSSH_API int ssh_bind_listen(ssh_bind ssh_bind_o)
Start listening to the socket.
Definition bind.c:228
LIBSSH_API void ssh_bind_set_blocking(ssh_bind ssh_bind_o, int blocking)
Set the session to blocking/nonblocking mode.
Definition bind.c:339
SSH_DEPRECATED LIBSSH_API enum ssh_publickey_state_e ssh_message_auth_publickey_state(ssh_message msg)
Definition server.c:880
These are the callbacks exported by the ssh_bind structure.
Definition server.h:81
ssh_bind_incoming_connection_callback incoming_connection
Definition server.h:85
size_t size
Definition server.h:83