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ssh2/include/libssh2.h

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/* Copyright (c) 2004-2009, Sara Golemon <sarag@libssh2.org>
* Copyright (c) 2009-2010 Daniel Stenberg
* Copyright (c) 2010 Simon Josefsson <simon@josefsson.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#ifndef LIBSSH2_H
#define LIBSSH2_H 1
#define LIBSSH2_COPYRIGHT "2004-2011 The libssh2 project and its contributors."
/* We use underscore instead of dash when appending DEV in dev versions just
to make the BANNER define (used by src/session.c) be a valid SSH
banner. Release versions have no appended strings and may of course not
have dashes either. */
#define LIBSSH2_VERSION "1.4.0_DEV"
/* The numeric version number is also available "in parts" by using these
defines: */
#define LIBSSH2_VERSION_MAJOR 1
#define LIBSSH2_VERSION_MINOR 4
#define LIBSSH2_VERSION_PATCH 0
/* This is the numeric version of the libssh2 version number, meant for easier
parsing and comparions by programs. The LIBSSH2_VERSION_NUM define will
always follow this syntax:
0xXXYYZZ
Where XX, YY and ZZ are the main version, release and patch numbers in
hexadecimal (using 8 bits each). All three numbers are always represented
using two digits. 1.2 would appear as "0x010200" while version 9.11.7
appears as "0x090b07".
This 6-digit (24 bits) hexadecimal number does not show pre-release number,
and it is always a greater number in a more recent release. It makes
comparisons with greater than and less than work.
*/
#define LIBSSH2_VERSION_NUM 0x010400
/*
* This is the date and time when the full source package was created. The
* timestamp is not stored in the source code repo, as the timestamp is
* properly set in the tarballs by the maketgz script.
*
* The format of the date should follow this template:
*
* "Mon Feb 12 11:35:33 UTC 2007"
*/
#define LIBSSH2_TIMESTAMP "DEV"
#ifndef RC_INVOKED
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _WIN32
# include <basetsd.h>
# include <winsock2.h>
#endif
#include <stddef.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
/* Allow alternate API prefix from CFLAGS or calling app */
#ifndef LIBSSH2_API
# ifdef LIBSSH2_WIN32
# ifdef LIBSSH2_LIBRARY
# define LIBSSH2_API __declspec(dllexport)
# else
# define LIBSSH2_API __declspec(dllimport)
# endif /* LIBSSH2_LIBRARY */
# else /* !LIBSSH2_WIN32 */
# define LIBSSH2_API
# endif /* LIBSSH2_WIN32 */
#endif /* LIBSSH2_API */
#if defined(LIBSSH2_DARWIN)
# include <sys/uio.h>
#endif
#if (defined(NETWARE) && !defined(__NOVELL_LIBC__))
# include <sys/bsdskt.h>
typedef unsigned char uint8_t;
typedef unsigned int uint32_t;
#endif
#ifdef _MSC_VER
typedef unsigned char uint8_t;
typedef unsigned int uint32_t;
typedef unsigned __int64 libssh2_uint64_t;
typedef __int64 libssh2_int64_t;
#ifndef ssize_t
typedef SSIZE_T ssize_t;
#endif
#else
typedef unsigned long long libssh2_uint64_t;
typedef long long libssh2_int64_t;
#endif
#ifdef WIN32
typedef SOCKET libssh2_socket_t;
#else /* !WIN32 */
typedef int libssh2_socket_t;
#define INVALID_SOCKET -1
#endif /* WIN32 */
/* Part of every banner, user specified or not */
#define LIBSSH2_SSH_BANNER "SSH-2.0-libssh2_" LIBSSH2_VERSION
/* We *could* add a comment here if we so chose */
#define LIBSSH2_SSH_DEFAULT_BANNER LIBSSH2_SSH_BANNER
#define LIBSSH2_SSH_DEFAULT_BANNER_WITH_CRLF LIBSSH2_SSH_DEFAULT_BANNER "\r\n"
/* Default generate and safe prime sizes for diffie-hellman-group-exchange-sha1 */
#define LIBSSH2_DH_GEX_MINGROUP 1024
#define LIBSSH2_DH_GEX_OPTGROUP 1536
#define LIBSSH2_DH_GEX_MAXGROUP 2048
/* Defaults for pty requests */
#define LIBSSH2_TERM_WIDTH 80
#define LIBSSH2_TERM_HEIGHT 24
#define LIBSSH2_TERM_WIDTH_PX 0
#define LIBSSH2_TERM_HEIGHT_PX 0
/* 1/4 second */
#define LIBSSH2_SOCKET_POLL_UDELAY 250000
/* 0.25 * 120 == 30 seconds */
#define LIBSSH2_SOCKET_POLL_MAXLOOPS 120
/* Maximum size to allow a payload to compress to, plays it safe by falling
short of spec limits */
#define LIBSSH2_PACKET_MAXCOMP 32000
/* Maximum size to allow a payload to deccompress to, plays it safe by
allowing more than spec requires */
#define LIBSSH2_PACKET_MAXDECOMP 40000
/* Maximum size for an inbound compressed payload, plays it safe by
overshooting spec limits */
#define LIBSSH2_PACKET_MAXPAYLOAD 40000
/* Malloc callbacks */
#define LIBSSH2_ALLOC_FUNC(name) void *name(size_t count, void **abstract)
#define LIBSSH2_REALLOC_FUNC(name) void *name(void *ptr, size_t count, \
void **abstract)
#define LIBSSH2_FREE_FUNC(name) void name(void *ptr, void **abstract)
typedef struct _LIBSSH2_USERAUTH_KBDINT_PROMPT
{
char* text;
unsigned int length;
unsigned char echo;
} LIBSSH2_USERAUTH_KBDINT_PROMPT;
typedef struct _LIBSSH2_USERAUTH_KBDINT_RESPONSE
{
char* text;
unsigned int length;
} LIBSSH2_USERAUTH_KBDINT_RESPONSE;
/* 'publickey' authentication callback */
#define LIBSSH2_USERAUTH_PUBLICKEY_SIGN_FUNC(name) \
int name(LIBSSH2_SESSION *session, unsigned char **sig, size_t *sig_len, \
const unsigned char *data, size_t data_len, void **abstract)
/* 'keyboard-interactive' authentication callback */
#define LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC(name_) \
void name_(const char* name, int name_len, const char* instruction, \
int instruction_len, int num_prompts, \
const LIBSSH2_USERAUTH_KBDINT_PROMPT* prompts, \
LIBSSH2_USERAUTH_KBDINT_RESPONSE* responses, void **abstract)
/* Callbacks for special SSH packets */
#define LIBSSH2_IGNORE_FUNC(name) \
void name(LIBSSH2_SESSION *session, const char *message, int message_len, \
void **abstract)
#define LIBSSH2_DEBUG_FUNC(name) \
void name(LIBSSH2_SESSION *session, int always_display, const char *message, \
int message_len, const char *language, int language_len, \
void **abstract)
#define LIBSSH2_DISCONNECT_FUNC(name) \
void name(LIBSSH2_SESSION *session, int reason, const char *message, \
int message_len, const char *language, int language_len, \
void **abstract)
#define LIBSSH2_PASSWD_CHANGEREQ_FUNC(name) \
void name(LIBSSH2_SESSION *session, char **newpw, int *newpw_len, \
void **abstract)
#define LIBSSH2_MACERROR_FUNC(name) \
int name(LIBSSH2_SESSION *session, const char *packet, int packet_len, \
void **abstract)
#define LIBSSH2_X11_OPEN_FUNC(name) \
void name(LIBSSH2_SESSION *session, LIBSSH2_CHANNEL *channel, \
const char *shost, int sport, void **abstract)
#define LIBSSH2_CHANNEL_CLOSE_FUNC(name) \
void name(LIBSSH2_SESSION *session, void **session_abstract, \
LIBSSH2_CHANNEL *channel, void **channel_abstract)
/* I/O callbacks */
#define LIBSSH2_RECV_FUNC(name) ssize_t name(libssh2_socket_t socket, \
void *buffer, size_t length, \
int flags, void **abstract)
#define LIBSSH2_SEND_FUNC(name) ssize_t name(libssh2_socket_t socket, \
const void *buffer, size_t length,\
int flags, void **abstract)
/* libssh2_session_callback_set() constants */
#define LIBSSH2_CALLBACK_IGNORE 0
#define LIBSSH2_CALLBACK_DEBUG 1
#define LIBSSH2_CALLBACK_DISCONNECT 2
#define LIBSSH2_CALLBACK_MACERROR 3
#define LIBSSH2_CALLBACK_X11 4
#define LIBSSH2_CALLBACK_SEND 5
#define LIBSSH2_CALLBACK_RECV 6
/* libssh2_session_method_pref() constants */
#define LIBSSH2_METHOD_KEX 0
#define LIBSSH2_METHOD_HOSTKEY 1
#define LIBSSH2_METHOD_CRYPT_CS 2
#define LIBSSH2_METHOD_CRYPT_SC 3
#define LIBSSH2_METHOD_MAC_CS 4
#define LIBSSH2_METHOD_MAC_SC 5
#define LIBSSH2_METHOD_COMP_CS 6
#define LIBSSH2_METHOD_COMP_SC 7
#define LIBSSH2_METHOD_LANG_CS 8
#define LIBSSH2_METHOD_LANG_SC 9
/* flags */
#define LIBSSH2_FLAG_SIGPIPE 1
#define LIBSSH2_FLAG_COMPRESS 2
typedef struct _LIBSSH2_SESSION LIBSSH2_SESSION;
typedef struct _LIBSSH2_CHANNEL LIBSSH2_CHANNEL;
typedef struct _LIBSSH2_LISTENER LIBSSH2_LISTENER;
typedef struct _LIBSSH2_KNOWNHOSTS LIBSSH2_KNOWNHOSTS;
typedef struct _LIBSSH2_AGENT LIBSSH2_AGENT;
typedef struct _LIBSSH2_POLLFD {
unsigned char type; /* LIBSSH2_POLLFD_* below */
union {
int socket; /* File descriptors -- examined with system select() call */
LIBSSH2_CHANNEL *channel; /* Examined by checking internal state */
LIBSSH2_LISTENER *listener; /* Read polls only -- are inbound
connections waiting to be accepted? */
} fd;
unsigned long events; /* Requested Events */
unsigned long revents; /* Returned Events */
} LIBSSH2_POLLFD;
/* Poll FD Descriptor Types */
#define LIBSSH2_POLLFD_SOCKET 1
#define LIBSSH2_POLLFD_CHANNEL 2
#define LIBSSH2_POLLFD_LISTENER 3
/* Note: Win32 Doesn't actually have a poll() implementation, so some of these
values are faked with select() data */
/* Poll FD events/revents -- Match sys/poll.h where possible */
#define LIBSSH2_POLLFD_POLLIN 0x0001 /* Data available to be read or
connection available --
All */
#define LIBSSH2_POLLFD_POLLPRI 0x0002 /* Priority data available to
be read -- Socket only */
#define LIBSSH2_POLLFD_POLLEXT 0x0002 /* Extended data available to
be read -- Channel only */
#define LIBSSH2_POLLFD_POLLOUT 0x0004 /* Can may be written --
Socket/Channel */
/* revents only */
#define LIBSSH2_POLLFD_POLLERR 0x0008 /* Error Condition -- Socket */
#define LIBSSH2_POLLFD_POLLHUP 0x0010 /* HangUp/EOF -- Socket */
#define LIBSSH2_POLLFD_SESSION_CLOSED 0x0010 /* Session Disconnect */
#define LIBSSH2_POLLFD_POLLNVAL 0x0020 /* Invalid request -- Socket
Only */
#define LIBSSH2_POLLFD_POLLEX 0x0040 /* Exception Condition --
Socket/Win32 */
#define LIBSSH2_POLLFD_CHANNEL_CLOSED 0x0080 /* Channel Disconnect */
#define LIBSSH2_POLLFD_LISTENER_CLOSED 0x0080 /* Listener Disconnect */
#define HAVE_LIBSSH2_SESSION_BLOCK_DIRECTION
/* Block Direction Types */
#define LIBSSH2_SESSION_BLOCK_INBOUND 0x0001
#define LIBSSH2_SESSION_BLOCK_OUTBOUND 0x0002
/* Hash Types */
#define LIBSSH2_HOSTKEY_HASH_MD5 1
#define LIBSSH2_HOSTKEY_HASH_SHA1 2
/* Hostkey Types */
#define LIBSSH2_HOSTKEY_TYPE_UNKNOWN 0
#define LIBSSH2_HOSTKEY_TYPE_RSA 1
#define LIBSSH2_HOSTKEY_TYPE_DSS 2
/* Disconnect Codes (defined by SSH protocol) */
#define SSH_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT 1
#define SSH_DISCONNECT_PROTOCOL_ERROR 2
#define SSH_DISCONNECT_KEY_EXCHANGE_FAILED 3
#define SSH_DISCONNECT_RESERVED 4
#define SSH_DISCONNECT_MAC_ERROR 5
#define SSH_DISCONNECT_COMPRESSION_ERROR 6
#define SSH_DISCONNECT_SERVICE_NOT_AVAILABLE 7
#define SSH_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED 8
#define SSH_DISCONNECT_HOST_KEY_NOT_VERIFIABLE 9
#define SSH_DISCONNECT_CONNECTION_LOST 10
#define SSH_DISCONNECT_BY_APPLICATION 11
#define SSH_DISCONNECT_TOO_MANY_CONNECTIONS 12
#define SSH_DISCONNECT_AUTH_CANCELLED_BY_USER 13
#define SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE 14
#define SSH_DISCONNECT_ILLEGAL_USER_NAME 15
/* Error Codes (defined by libssh2) */
#define LIBSSH2_ERROR_NONE 0
/* The library once used -1 as a generic error return value on numerous places
through the code, which subsequently was converted to
LIBSSH2_ERROR_SOCKET_NONE uses over time. As this is a generic error code,
the goal is to never ever return this code but instead make sure that a
more accurate and descriptive error code is used. */
#define LIBSSH2_ERROR_SOCKET_NONE -1
#define LIBSSH2_ERROR_BANNER_RECV -2
#define LIBSSH2_ERROR_BANNER_SEND -3
#define LIBSSH2_ERROR_INVALID_MAC -4
#define LIBSSH2_ERROR_KEX_FAILURE -5
#define LIBSSH2_ERROR_ALLOC -6
#define LIBSSH2_ERROR_SOCKET_SEND -7
#define LIBSSH2_ERROR_KEY_EXCHANGE_FAILURE -8
#define LIBSSH2_ERROR_TIMEOUT -9
#define LIBSSH2_ERROR_HOSTKEY_INIT -10
#define LIBSSH2_ERROR_HOSTKEY_SIGN -11
#define LIBSSH2_ERROR_DECRYPT -12
#define LIBSSH2_ERROR_SOCKET_DISCONNECT -13
#define LIBSSH2_ERROR_PROTO -14
#define LIBSSH2_ERROR_PASSWORD_EXPIRED -15
#define LIBSSH2_ERROR_FILE -16
#define LIBSSH2_ERROR_METHOD_NONE -17
#define LIBSSH2_ERROR_AUTHENTICATION_FAILED -18
#define LIBSSH2_ERROR_PUBLICKEY_UNRECOGNIZED LIBSSH2_ERROR_AUTHENTICATION_FAILED
#define LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED -19
#define LIBSSH2_ERROR_CHANNEL_OUTOFORDER -20
#define LIBSSH2_ERROR_CHANNEL_FAILURE -21
#define LIBSSH2_ERROR_CHANNEL_REQUEST_DENIED -22
#define LIBSSH2_ERROR_CHANNEL_UNKNOWN -23
#define LIBSSH2_ERROR_CHANNEL_WINDOW_EXCEEDED -24
#define LIBSSH2_ERROR_CHANNEL_PACKET_EXCEEDED -25
#define LIBSSH2_ERROR_CHANNEL_CLOSED -26
#define LIBSSH2_ERROR_CHANNEL_EOF_SENT -27
#define LIBSSH2_ERROR_SCP_PROTOCOL -28
#define LIBSSH2_ERROR_ZLIB -29
#define LIBSSH2_ERROR_SOCKET_TIMEOUT -30
#define LIBSSH2_ERROR_SFTP_PROTOCOL -31
#define LIBSSH2_ERROR_REQUEST_DENIED -32
#define LIBSSH2_ERROR_METHOD_NOT_SUPPORTED -33
#define LIBSSH2_ERROR_INVAL -34
#define LIBSSH2_ERROR_INVALID_POLL_TYPE -35
#define LIBSSH2_ERROR_PUBLICKEY_PROTOCOL -36
#define LIBSSH2_ERROR_EAGAIN -37
#define LIBSSH2_ERROR_BUFFER_TOO_SMALL -38
#define LIBSSH2_ERROR_BAD_USE -39
#define LIBSSH2_ERROR_COMPRESS -40
#define LIBSSH2_ERROR_OUT_OF_BOUNDARY -41
#define LIBSSH2_ERROR_AGENT_PROTOCOL -42
#define LIBSSH2_ERROR_SOCKET_RECV -43
#define LIBSSH2_ERROR_ENCRYPT -44
#define LIBSSH2_ERROR_BAD_SOCKET -45
/* this is a define to provide the old (<= 1.2.7) name */
#define LIBSSH2_ERROR_BANNER_NONE LIBSSH2_ERROR_BANNER_RECV
/* Global API */
#define LIBSSH2_INIT_NO_CRYPTO 0x0001
/*
* libssh2_init()
*
* Initialize the libssh2 functions. This typically initialize the
* crypto library. It uses a global state, and is not thread safe --
* you must make sure this function is not called concurrently.
*
* Flags can be:
* 0: Normal initialize
* LIBSSH2_INIT_NO_CRYPTO: Do not initialize the crypto library (ie.
* OPENSSL_add_cipher_algoritms() for OpenSSL
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int libssh2_init(int flags);
/*
* libssh2_exit()
*
* Exit the libssh2 functions and free's all memory used internal.
*/
LIBSSH2_API void libssh2_exit(void);
/*
* libssh2_free()
*
* Deallocate memory allocated by earlier call to libssh2 functions.
*/
LIBSSH2_API void libssh2_free(LIBSSH2_SESSION *session, void *ptr);
/*
* libssh2_session_supported_algs()
*
* Fills algs with a list of supported acryptographic algorithms. Returns a
* non-negative number (number of supported algorithms) on success or a
* negative number (an eror code) on failure.
*
* NOTE: on success, algs must be deallocated (by calling libssh2_free) when
* not needed anymore
*/
LIBSSH2_API int libssh2_session_supported_algs(LIBSSH2_SESSION* session,
int method_type,
const char*** algs);
/* Session API */
LIBSSH2_API LIBSSH2_SESSION *
libssh2_session_init_ex(LIBSSH2_ALLOC_FUNC((*my_alloc)),
LIBSSH2_FREE_FUNC((*my_free)),
LIBSSH2_REALLOC_FUNC((*my_realloc)), void *abstract);
#define libssh2_session_init() libssh2_session_init_ex(NULL, NULL, NULL, NULL)
LIBSSH2_API void **libssh2_session_abstract(LIBSSH2_SESSION *session);
LIBSSH2_API void *libssh2_session_callback_set(LIBSSH2_SESSION *session,
int cbtype, void *callback);
LIBSSH2_API int libssh2_session_banner_set(LIBSSH2_SESSION *session,
const char *banner);
LIBSSH2_API int libssh2_banner_set(LIBSSH2_SESSION *session,
const char *banner);
LIBSSH2_API int libssh2_session_startup(LIBSSH2_SESSION *session, int sock);
LIBSSH2_API int libssh2_session_handshake(LIBSSH2_SESSION *session,
libssh2_socket_t sock);
LIBSSH2_API int libssh2_session_disconnect_ex(LIBSSH2_SESSION *session,
int reason,
const char *description,
const char *lang);
#define libssh2_session_disconnect(session, description) \
libssh2_session_disconnect_ex((session), SSH_DISCONNECT_BY_APPLICATION, \
(description), "")
LIBSSH2_API int libssh2_session_free(LIBSSH2_SESSION *session);
LIBSSH2_API const char *libssh2_hostkey_hash(LIBSSH2_SESSION *session,
int hash_type);
LIBSSH2_API const char *libssh2_session_hostkey(LIBSSH2_SESSION *session,
size_t *len, int *type);
LIBSSH2_API int libssh2_session_method_pref(LIBSSH2_SESSION *session,
int method_type,
const char *prefs);
LIBSSH2_API const char *libssh2_session_methods(LIBSSH2_SESSION *session,
int method_type);
LIBSSH2_API int libssh2_session_last_error(LIBSSH2_SESSION *session,
char **errmsg,
int *errmsg_len, int want_buf);
LIBSSH2_API int libssh2_session_last_errno(LIBSSH2_SESSION *session);
LIBSSH2_API int libssh2_session_block_directions(LIBSSH2_SESSION *session);
LIBSSH2_API int libssh2_session_flag(LIBSSH2_SESSION *session, int flag,
int value);
LIBSSH2_API const char *libssh2_session_banner_get(LIBSSH2_SESSION *session);
/* Userauth API */
LIBSSH2_API char *libssh2_userauth_list(LIBSSH2_SESSION *session,
const char *username,
unsigned int username_len);
LIBSSH2_API int libssh2_userauth_authenticated(LIBSSH2_SESSION *session);
LIBSSH2_API int libssh2_userauth_password_ex(LIBSSH2_SESSION *session,
const char *username,
unsigned int username_len,
const char *password,
unsigned int password_len,
LIBSSH2_PASSWD_CHANGEREQ_FUNC((*passwd_change_cb)));
#define libssh2_userauth_password(session, username, password) \
libssh2_userauth_password_ex((session), (username), strlen(username), \
(password), strlen(password), NULL)
LIBSSH2_API int
libssh2_userauth_publickey_fromfile_ex(LIBSSH2_SESSION *session,
const char *username,
unsigned int username_len,
const char *publickey,
const char *privatekey,
const char *passphrase);
#define libssh2_userauth_publickey_fromfile(session, username, publickey, \
privatekey, passphrase) \
libssh2_userauth_publickey_fromfile_ex((session), (username), \
strlen(username), (publickey), \
(privatekey), (passphrase))
LIBSSH2_API int
libssh2_userauth_publickey(LIBSSH2_SESSION *session,
const char *username,
const unsigned char *pubkeydata,
size_t pubkeydata_len,
LIBSSH2_USERAUTH_PUBLICKEY_SIGN_FUNC((*sign_callback)),
void **abstract);
LIBSSH2_API int
libssh2_userauth_hostbased_fromfile_ex(LIBSSH2_SESSION *session,
const char *username,
unsigned int username_len,
const char *publickey,
const char *privatekey,
const char *passphrase,
const char *hostname,
unsigned int hostname_len,
const char *local_username,
unsigned int local_username_len);
#define libssh2_userauth_hostbased_fromfile(session, username, publickey, \
privatekey, passphrase, hostname) \
libssh2_userauth_hostbased_fromfile_ex((session), (username), \
strlen(username), (publickey), \
(privatekey), (passphrase), \
(hostname), strlen(hostname), \
(username), strlen(username))
/*
* response_callback is provided with filled by library prompts array,
* but client must allocate and fill individual responses. Responses
* array is already allocated. Responses data will be freed by libssh2
* after callback return, but before subsequent callback invokation.
*/
LIBSSH2_API int
libssh2_userauth_keyboard_interactive_ex(LIBSSH2_SESSION* session,
const char *username,
unsigned int username_len,
LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC((*response_callback)));
#define libssh2_userauth_keyboard_interactive(session, username, \
response_callback) \
libssh2_userauth_keyboard_interactive_ex((session), (username), \
strlen(username), (response_callback))
LIBSSH2_API int libssh2_poll(LIBSSH2_POLLFD *fds, unsigned int nfds,
long timeout);
/* Channel API */
#define LIBSSH2_CHANNEL_WINDOW_DEFAULT (256*1024)
#define LIBSSH2_CHANNEL_PACKET_DEFAULT 32768
#define LIBSSH2_CHANNEL_MINADJUST 1024
/* Extended Data Handling */
#define LIBSSH2_CHANNEL_EXTENDED_DATA_NORMAL 0
#define LIBSSH2_CHANNEL_EXTENDED_DATA_IGNORE 1
#define LIBSSH2_CHANNEL_EXTENDED_DATA_MERGE 2
#define SSH_EXTENDED_DATA_STDERR 1
/* Returned by any function that would block during a read/write opperation */
#define LIBSSH2CHANNEL_EAGAIN LIBSSH2_ERROR_EAGAIN
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_channel_open_ex(LIBSSH2_SESSION *session, const char *channel_type,
unsigned int channel_type_len,
unsigned int window_size, unsigned int packet_size,
const char *message, unsigned int message_len);
#define libssh2_channel_open_session(session) \
libssh2_channel_open_ex((session), "session", sizeof("session") - 1, \
LIBSSH2_CHANNEL_WINDOW_DEFAULT, \
LIBSSH2_CHANNEL_PACKET_DEFAULT, NULL, 0)
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_channel_direct_tcpip_ex(LIBSSH2_SESSION *session, const char *host,
int port, const char *shost, int sport);
#define libssh2_channel_direct_tcpip(session, host, port) \
libssh2_channel_direct_tcpip_ex((session), (host), (port), "127.0.0.1", 22)
LIBSSH2_API LIBSSH2_LISTENER *
libssh2_channel_forward_listen_ex(LIBSSH2_SESSION *session, const char *host,
int port, int *bound_port, int queue_maxsize);
#define libssh2_channel_forward_listen(session, port) \
libssh2_channel_forward_listen_ex((session), NULL, (port), NULL, 16)
LIBSSH2_API int libssh2_channel_forward_cancel(LIBSSH2_LISTENER *listener);
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_channel_forward_accept(LIBSSH2_LISTENER *listener);
LIBSSH2_API int libssh2_channel_setenv_ex(LIBSSH2_CHANNEL *channel,
const char *varname,
unsigned int varname_len,
const char *value,
unsigned int value_len);
#define libssh2_channel_setenv(channel, varname, value) \
libssh2_channel_setenv_ex((channel), (varname), strlen(varname), (value), \
strlen(value))
LIBSSH2_API int libssh2_channel_request_pty_ex(LIBSSH2_CHANNEL *channel,
const char *term,
unsigned int term_len,
const char *modes,
unsigned int modes_len,
int width, int height,
int width_px, int height_px);
#define libssh2_channel_request_pty(channel, term) \
libssh2_channel_request_pty_ex((channel), (term), strlen(term), NULL, 0, \
LIBSSH2_TERM_WIDTH, LIBSSH2_TERM_HEIGHT, \
LIBSSH2_TERM_WIDTH_PX, LIBSSH2_TERM_HEIGHT_PX)
LIBSSH2_API int libssh2_channel_request_pty_size_ex(LIBSSH2_CHANNEL *channel,
int width, int height,
int width_px,
int height_px);
#define libssh2_channel_request_pty_size(channel, width, height) \
libssh2_channel_request_pty_size_ex( (channel), (width), (height), 0, 0)
LIBSSH2_API int libssh2_channel_x11_req_ex(LIBSSH2_CHANNEL *channel,
int single_connection,
const char *auth_proto,
const char *auth_cookie,
int screen_number);
#define libssh2_channel_x11_req(channel, screen_number) \
libssh2_channel_x11_req_ex((channel), 0, NULL, NULL, (screen_number))
LIBSSH2_API int libssh2_channel_process_startup(LIBSSH2_CHANNEL *channel,
const char *request,
unsigned int request_len,
const char *message,
unsigned int message_len);
#define libssh2_channel_shell(channel) \
libssh2_channel_process_startup((channel), "shell", sizeof("shell") - 1, \
NULL, 0)
#define libssh2_channel_exec(channel, command) \
libssh2_channel_process_startup((channel), "exec", sizeof("exec") - 1, \
(command), strlen(command))
#define libssh2_channel_subsystem(channel, subsystem) \
libssh2_channel_process_startup((channel), "subsystem", \
sizeof("subsystem") - 1, (subsystem), \
strlen(subsystem))
LIBSSH2_API ssize_t libssh2_channel_read_ex(LIBSSH2_CHANNEL *channel,
int stream_id, char *buf,
size_t buflen);
#define libssh2_channel_read(channel, buf, buflen) \
libssh2_channel_read_ex((channel), 0, (buf), (buflen))
#define libssh2_channel_read_stderr(channel, buf, buflen) \
libssh2_channel_read_ex((channel), SSH_EXTENDED_DATA_STDERR, (buf), (buflen))
LIBSSH2_API int libssh2_poll_channel_read(LIBSSH2_CHANNEL *channel,
int extended);
LIBSSH2_API unsigned long
libssh2_channel_window_read_ex(LIBSSH2_CHANNEL *channel,
unsigned long *read_avail,
unsigned long *window_size_initial);
#define libssh2_channel_window_read(channel) \
libssh2_channel_window_read_ex((channel), NULL, NULL)
/* libssh2_channel_receive_window_adjust is DEPRECATED, do not use! */
LIBSSH2_API unsigned long
libssh2_channel_receive_window_adjust(LIBSSH2_CHANNEL *channel,
unsigned long adjustment,
unsigned char force);
LIBSSH2_API int
libssh2_channel_receive_window_adjust2(LIBSSH2_CHANNEL *channel,
unsigned long adjustment,
unsigned char force,
unsigned int *storewindow);
LIBSSH2_API ssize_t libssh2_channel_write_ex(LIBSSH2_CHANNEL *channel,
int stream_id, const char *buf,
size_t buflen);
#define libssh2_channel_write(channel, buf, buflen) \
libssh2_channel_write_ex((channel), 0, (buf), (buflen))
#define libssh2_channel_write_stderr(channel, buf, buflen) \
libssh2_channel_write_ex((channel), SSH_EXTENDED_DATA_STDERR, (buf), (buflen))
LIBSSH2_API unsigned long
libssh2_channel_window_write_ex(LIBSSH2_CHANNEL *channel,
unsigned long *window_size_initial);
#define libssh2_channel_window_write(channel) \
libssh2_channel_window_write_ex((channel), NULL)
LIBSSH2_API void libssh2_session_set_blocking(LIBSSH2_SESSION* session,
int blocking);
LIBSSH2_API int libssh2_session_get_blocking(LIBSSH2_SESSION* session);
LIBSSH2_API void libssh2_channel_set_blocking(LIBSSH2_CHANNEL *channel,
int blocking);
LIBSSH2_API void libssh2_session_set_timeout(LIBSSH2_SESSION* session,
long timeout);
LIBSSH2_API long libssh2_session_get_timeout(LIBSSH2_SESSION* session);
/* libssh2_channel_handle_extended_data is DEPRECATED, do not use! */
LIBSSH2_API void libssh2_channel_handle_extended_data(LIBSSH2_CHANNEL *channel,
int ignore_mode);
LIBSSH2_API int libssh2_channel_handle_extended_data2(LIBSSH2_CHANNEL *channel,
int ignore_mode);
/* libssh2_channel_ignore_extended_data() is defined below for BC with version
* 0.1
*
* Future uses should use libssh2_channel_handle_extended_data() directly if
* LIBSSH2_CHANNEL_EXTENDED_DATA_MERGE is passed, extended data will be read
* (FIFO) from the standard data channel
*/
/* DEPRECATED */
#define libssh2_channel_ignore_extended_data(channel, ignore) \
libssh2_channel_handle_extended_data((channel), \
(ignore) ? \
LIBSSH2_CHANNEL_EXTENDED_DATA_IGNORE : \
LIBSSH2_CHANNEL_EXTENDED_DATA_NORMAL )
#define LIBSSH2_CHANNEL_FLUSH_EXTENDED_DATA -1
#define LIBSSH2_CHANNEL_FLUSH_ALL -2
LIBSSH2_API int libssh2_channel_flush_ex(LIBSSH2_CHANNEL *channel,
int streamid);
#define libssh2_channel_flush(channel) libssh2_channel_flush_ex((channel), 0)
#define libssh2_channel_flush_stderr(channel) \
libssh2_channel_flush_ex((channel), SSH_EXTENDED_DATA_STDERR)
LIBSSH2_API int libssh2_channel_get_exit_status(LIBSSH2_CHANNEL* channel);
LIBSSH2_API int libssh2_channel_get_exit_signal(LIBSSH2_CHANNEL* channel,
char **exitsignal,
size_t *exitsignal_len,
char **errmsg,
size_t *errmsg_len,
char **langtag,
size_t *langtag_len);
LIBSSH2_API int libssh2_channel_send_eof(LIBSSH2_CHANNEL *channel);
LIBSSH2_API int libssh2_channel_eof(LIBSSH2_CHANNEL *channel);
LIBSSH2_API int libssh2_channel_wait_eof(LIBSSH2_CHANNEL *channel);
LIBSSH2_API int libssh2_channel_close(LIBSSH2_CHANNEL *channel);
LIBSSH2_API int libssh2_channel_wait_closed(LIBSSH2_CHANNEL *channel);
LIBSSH2_API int libssh2_channel_free(LIBSSH2_CHANNEL *channel);
LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_recv(LIBSSH2_SESSION *session,
const char *path,
struct stat *sb);
LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_send_ex(LIBSSH2_SESSION *session,
const char *path, int mode,
size_t size, long mtime,
long atime);
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_scp_send64(LIBSSH2_SESSION *session, const char *path, int mode,
libssh2_int64_t size, time_t mtime, time_t atime);
#define libssh2_scp_send(session, path, mode, size) \
libssh2_scp_send_ex((session), (path), (mode), (size), 0, 0)
LIBSSH2_API int libssh2_base64_decode(LIBSSH2_SESSION *session, char **dest,
unsigned int *dest_len,
const char *src, unsigned int src_len);
LIBSSH2_API
const char *libssh2_version(int req_version_num);
#define HAVE_LIBSSH2_KNOWNHOST_API 0x010101 /* since 1.1.1 */
#define HAVE_LIBSSH2_VERSION_API 0x010100 /* libssh2_version since 1.1 */
struct libssh2_knownhost {
unsigned int magic; /* magic stored by the library */
void *node; /* handle to the internal representation of this host */
char *name; /* this is NULL if no plain text host name exists */
char *key; /* key in base64/printable format */
int typemask;
};
/*
* libssh2_knownhost_init
*
* Init a collection of known hosts. Returns the pointer to a collection.
*
*/
LIBSSH2_API LIBSSH2_KNOWNHOSTS *
libssh2_knownhost_init(LIBSSH2_SESSION *session);
/*
* libssh2_knownhost_add
*
* Add a host and its associated key to the collection of known hosts.
*
* The 'type' argument specifies on what format the given host and keys are:
*
* plain - ascii "hostname.domain.tld"
* sha1 - SHA1(<salt> <host>) base64-encoded!
* custom - another hash
*
* If 'sha1' is selected as type, the salt must be provided to the salt
* argument. This too base64 encoded.
*
* The SHA-1 hash is what OpenSSH can be told to use in known_hosts files. If
* a custom type is used, salt is ignored and you must provide the host
* pre-hashed when checking for it in the libssh2_knownhost_check() function.
*
* The keylen parameter may be omitted (zero) if the key is provided as a
* NULL-terminated base64-encoded string.
*/
/* host format (2 bits) */
#define LIBSSH2_KNOWNHOST_TYPE_MASK 0xffff
#define LIBSSH2_KNOWNHOST_TYPE_PLAIN 1
#define LIBSSH2_KNOWNHOST_TYPE_SHA1 2 /* always base64 encoded */
#define LIBSSH2_KNOWNHOST_TYPE_CUSTOM 3
/* key format (2 bits) */
#define LIBSSH2_KNOWNHOST_KEYENC_MASK (3<<16)
#define LIBSSH2_KNOWNHOST_KEYENC_RAW (1<<16)
#define LIBSSH2_KNOWNHOST_KEYENC_BASE64 (2<<16)
/* type of key (2 bits) */
#define LIBSSH2_KNOWNHOST_KEY_MASK (3<<18)
#define LIBSSH2_KNOWNHOST_KEY_SHIFT 18
#define LIBSSH2_KNOWNHOST_KEY_RSA1 (1<<18)
#define LIBSSH2_KNOWNHOST_KEY_SSHRSA (2<<18)
#define LIBSSH2_KNOWNHOST_KEY_SSHDSS (3<<18)
LIBSSH2_API int
libssh2_knownhost_add(LIBSSH2_KNOWNHOSTS *hosts,
const char *host,
const char *salt,
const char *key, size_t keylen, int typemask,
struct libssh2_knownhost **store);
/*
* libssh2_knownhost_addc
*
* Add a host and its associated key to the collection of known hosts.
*
* Takes a comment argument that may be NULL. A NULL comment indicates
* there is no comment and the entry will end directly after the key
* when written out to a file. An empty string "" comment will indicate an
* empty comment which will cause a single space to be written after the key.
*
* The 'type' argument specifies on what format the given host and keys are:
*
* plain - ascii "hostname.domain.tld"
* sha1 - SHA1(<salt> <host>) base64-encoded!
* custom - another hash
*
* If 'sha1' is selected as type, the salt must be provided to the salt
* argument. This too base64 encoded.
*
* The SHA-1 hash is what OpenSSH can be told to use in known_hosts files. If
* a custom type is used, salt is ignored and you must provide the host
* pre-hashed when checking for it in the libssh2_knownhost_check() function.
*
* The keylen parameter may be omitted (zero) if the key is provided as a
* NULL-terminated base64-encoded string.
*/
LIBSSH2_API int
libssh2_knownhost_addc(LIBSSH2_KNOWNHOSTS *hosts,
const char *host,
const char *salt,
const char *key, size_t keylen,
const char *comment, size_t commentlen, int typemask,
struct libssh2_knownhost **store);
/*
* libssh2_knownhost_check
*
* Check a host and its associated key against the collection of known hosts.
*
* The type is the type/format of the given host name.
*
* plain - ascii "hostname.domain.tld"
* custom - prehashed base64 encoded. Note that this cannot use any salts.
*
*
* 'knownhost' may be set to NULL if you don't care about that info.
*
* Returns:
*
* LIBSSH2_KNOWNHOST_CHECK_* values, see below
*
*/
#define LIBSSH2_KNOWNHOST_CHECK_MATCH 0
#define LIBSSH2_KNOWNHOST_CHECK_MISMATCH 1
#define LIBSSH2_KNOWNHOST_CHECK_NOTFOUND 2
#define LIBSSH2_KNOWNHOST_CHECK_FAILURE 3
LIBSSH2_API int
libssh2_knownhost_check(LIBSSH2_KNOWNHOSTS *hosts,
const char *host, const char *key, size_t keylen,
int typemask,
struct libssh2_knownhost **knownhost);
/* this function is identital to the above one, but also takes a port
argument that allows libssh2 to do a better check */
LIBSSH2_API int
libssh2_knownhost_checkp(LIBSSH2_KNOWNHOSTS *hosts,
const char *host, int port,
const char *key, size_t keylen,
int typemask,
struct libssh2_knownhost **knownhost);
/*
* libssh2_knownhost_del
*
* Remove a host from the collection of known hosts. The 'entry' struct is
* retrieved by a call to libssh2_knownhost_check().
*
*/
LIBSSH2_API int
libssh2_knownhost_del(LIBSSH2_KNOWNHOSTS *hosts,
struct libssh2_knownhost *entry);
/*
* libssh2_knownhost_free
*
* Free an entire collection of known hosts.
*
*/
LIBSSH2_API void
libssh2_knownhost_free(LIBSSH2_KNOWNHOSTS *hosts);
/*
* libssh2_knownhost_readline()
*
* Pass in a line of a file of 'type'. It makes libssh2 read this line.
*
* LIBSSH2_KNOWNHOST_FILE_OPENSSH is the only supported type.
*
*/
LIBSSH2_API int
libssh2_knownhost_readline(LIBSSH2_KNOWNHOSTS *hosts,
const char *line, size_t len, int type);
/*
* libssh2_knownhost_readfile
*
* Add hosts+key pairs from a given file.
*
* Returns a negative value for error or number of successfully added hosts.
*
* This implementation currently only knows one 'type' (openssh), all others
* are reserved for future use.
*/
#define LIBSSH2_KNOWNHOST_FILE_OPENSSH 1
LIBSSH2_API int
libssh2_knownhost_readfile(LIBSSH2_KNOWNHOSTS *hosts,
const char *filename, int type);
/*
* libssh2_knownhost_writeline()
*
* Ask libssh2 to convert a known host to an output line for storage.
*
* Note that this function returns LIBSSH2_ERROR_BUFFER_TOO_SMALL if the given
* output buffer is too small to hold the desired output.
*
* This implementation currently only knows one 'type' (openssh), all others
* are reserved for future use.
*
*/
LIBSSH2_API int
libssh2_knownhost_writeline(LIBSSH2_KNOWNHOSTS *hosts,
struct libssh2_knownhost *known,
char *buffer, size_t buflen,
size_t *outlen, /* the amount of written data */
int type);
/*
* libssh2_knownhost_writefile
*
* Write hosts+key pairs to a given file.
*
* This implementation currently only knows one 'type' (openssh), all others
* are reserved for future use.
*/
LIBSSH2_API int
libssh2_knownhost_writefile(LIBSSH2_KNOWNHOSTS *hosts,
const char *filename, int type);
/*
* libssh2_knownhost_get()
*
* Traverse the internal list of known hosts. Pass NULL to 'prev' to get
* the first one. Or pass a poiner to the previously returned one to get the
* next.
*
* Returns:
* 0 if a fine host was stored in 'store'
* 1 if end of hosts
* [negative] on errors
*/
LIBSSH2_API int
libssh2_knownhost_get(LIBSSH2_KNOWNHOSTS *hosts,
struct libssh2_knownhost **store,
struct libssh2_knownhost *prev);
#define HAVE_LIBSSH2_AGENT_API 0x010202 /* since 1.2.2 */
struct libssh2_agent_publickey {
unsigned int magic; /* magic stored by the library */
void *node; /* handle to the internal representation of key */
unsigned char *blob; /* public key blob */
size_t blob_len; /* length of the public key blob */
char *comment; /* comment in printable format */
};
/*
* libssh2_agent_init
*
* Init an ssh-agent handle. Returns the pointer to the handle.
*
*/
LIBSSH2_API LIBSSH2_AGENT *
libssh2_agent_init(LIBSSH2_SESSION *session);
/*
* libssh2_agent_connect()
*
* Connect to an ssh-agent.
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int
libssh2_agent_connect(LIBSSH2_AGENT *agent);
/*
* libssh2_agent_list_identities()
*
* Request an ssh-agent to list identities.
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int
libssh2_agent_list_identities(LIBSSH2_AGENT *agent);
/*
* libssh2_agent_get_identity()
*
* Traverse the internal list of public keys. Pass NULL to 'prev' to get
* the first one. Or pass a poiner to the previously returned one to get the
* next.
*
* Returns:
* 0 if a fine public key was stored in 'store'
* 1 if end of public keys
* [negative] on errors
*/
LIBSSH2_API int
libssh2_agent_get_identity(LIBSSH2_AGENT *agent,
struct libssh2_agent_publickey **store,
struct libssh2_agent_publickey *prev);
/*
* libssh2_agent_userauth()
*
* Do publickey user authentication with the help of ssh-agent.
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int
libssh2_agent_userauth(LIBSSH2_AGENT *agent,
const char *username,
struct libssh2_agent_publickey *identity);
/*
* libssh2_agent_disconnect()
*
* Close a connection to an ssh-agent.
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int
libssh2_agent_disconnect(LIBSSH2_AGENT *agent);
/*
* libssh2_agent_free()
*
* Free an ssh-agent handle. This function also frees the internal
* collection of public keys.
*/
LIBSSH2_API void
libssh2_agent_free(LIBSSH2_AGENT *agent);
/*
* libssh2_keepalive_config()
*
* Set how often keepalive messages should be sent. WANT_REPLY
* indicates whether the keepalive messages should request a response
* from the server. INTERVAL is number of seconds that can pass
* without any I/O, use 0 (the default) to disable keepalives. To
* avoid some busy-loop corner-cases, if you specify an interval of 1
* it will be treated as 2.
*
* Note that non-blocking applications are responsible for sending the
* keepalive messages using libssh2_keepalive_send().
*/
LIBSSH2_API void libssh2_keepalive_config (LIBSSH2_SESSION *session,
int want_reply,
unsigned interval);
/*
* libssh2_keepalive_send()
*
* Send a keepalive message if needed. SECONDS_TO_NEXT indicates how
* many seconds you can sleep after this call before you need to call
* it again. Returns 0 on success, or LIBSSH2_ERROR_SOCKET_SEND on
* I/O errors.
*/
LIBSSH2_API int libssh2_keepalive_send (LIBSSH2_SESSION *session,
int *seconds_to_next);
/* NOTE NOTE NOTE
libssh2_trace() has no function in builds that aren't built with debug
enabled
*/
LIBSSH2_API int libssh2_trace(LIBSSH2_SESSION *session, int bitmask);
#define LIBSSH2_TRACE_TRANS (1<<1)
#define LIBSSH2_TRACE_KEX (1<<2)
#define LIBSSH2_TRACE_AUTH (1<<3)
#define LIBSSH2_TRACE_CONN (1<<4)
#define LIBSSH2_TRACE_SCP (1<<5)
#define LIBSSH2_TRACE_SFTP (1<<6)
#define LIBSSH2_TRACE_ERROR (1<<7)
#define LIBSSH2_TRACE_PUBLICKEY (1<<8)
#define LIBSSH2_TRACE_SOCKET (1<<9)
typedef void (*libssh2_trace_handler_func)(LIBSSH2_SESSION*,
void*,
const char *,
size_t);
LIBSSH2_API int libssh2_trace_sethandler(LIBSSH2_SESSION *session,
void* context,
libssh2_trace_handler_func callback);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* !RC_INVOKED */
#endif /* LIBSSH2_H */
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