441 lines
24 KiB
C
441 lines
24 KiB
C
/* Copyright (c) 2004-2007, Sara Golemon <sarag@libssh2.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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*
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* Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* Neither the name of the copyright holder nor the names
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* of any other contributors may be used to endorse or
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* promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*/
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#ifndef LIBSSH2_H
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#define LIBSSH2_H 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stddef.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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/* Allow alternate API prefix from CFLAGS or calling app */
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#ifndef LIBSSH2_API
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# ifdef LIBSSH2_WIN32
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# ifdef LIBSSH2_LIBRARY
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# define LIBSSH2_API __declspec(dllexport)
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# else
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# define LIBSSH2_API __declspec(dllimport)
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# endif /* LIBSSH2_LIBRARY */
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# else /* !LIBSSH2_WIN32 */
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# define LIBSSH2_API
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# endif /* LIBSSH2_WIN32 */
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#endif /* LIBSSH2_API */
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#if defined(LIBSSH2_DARWIN) || (defined(LIBSSH2_WIN32) && !defined(_MSC_VER) && !defined(__MINGW32__))
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# include <sys/uio.h>
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#endif
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#if (defined(NETWARE) && !defined(__NOVELL_LIBC__))
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# include <sys/bsdskt.h>
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typedef unsigned int uint32_t;
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#endif
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#if defined(LIBSSH2_WIN32) && defined(_MSC_VER) && (_MSC_VER <= 1310)
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typedef unsigned __int64 libssh2_uint64_t;
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typedef __int64 libssh2_int64_t;
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typedef long ssize_t;
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typedef unsigned int uint32_t;
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#else
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typedef unsigned long long libssh2_uint64_t;
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typedef long long libssh2_int64_t;
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#endif
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#define LIBSSH2_VERSION "0.16-CVS"
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#define LIBSSH2_APINO 200706151200L
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/* Part of every banner, user specified or not */
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#define LIBSSH2_SSH_BANNER "SSH-2.0-libssh2_" LIBSSH2_VERSION
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/* We *could* add a comment here if we so chose */
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#define LIBSSH2_SSH_DEFAULT_BANNER LIBSSH2_SSH_BANNER
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#define LIBSSH2_SSH_DEFAULT_BANNER_WITH_CRLF LIBSSH2_SSH_DEFAULT_BANNER "\r\n"
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/* Default generate and safe prime sizes for diffie-hellman-group-exchange-sha1 */
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#define LIBSSH2_DH_GEX_MINGROUP 1024
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#define LIBSSH2_DH_GEX_OPTGROUP 1536
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#define LIBSSH2_DH_GEX_MAXGROUP 2048
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/* Defaults for pty requests */
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#define LIBSSH2_TERM_WIDTH 80
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#define LIBSSH2_TERM_HEIGHT 24
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#define LIBSSH2_TERM_WIDTH_PX 0
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#define LIBSSH2_TERM_HEIGHT_PX 0
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/* 1/4 second */
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#define LIBSSH2_SOCKET_POLL_UDELAY 250000
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/* 0.25 * 120 == 30 seconds */
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#define LIBSSH2_SOCKET_POLL_MAXLOOPS 120
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/* Maximum size to allow a payload to compress to, plays it safe by falling short of spec limits */
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#define LIBSSH2_PACKET_MAXCOMP 32000
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/* Maximum size to allow a payload to deccompress to, plays it safe by allowing more than spec requires */
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#define LIBSSH2_PACKET_MAXDECOMP 40000
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/* Maximum size for an inbound compressed payload, plays it safe by overshooting spec limits */
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#define LIBSSH2_PACKET_MAXPAYLOAD 40000
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/* Malloc callbacks */
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#define LIBSSH2_ALLOC_FUNC(name) void *name(size_t count, void **abstract)
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#define LIBSSH2_REALLOC_FUNC(name) void *name(void *ptr, size_t count, void **abstract)
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#define LIBSSH2_FREE_FUNC(name) void name(void *ptr, void **abstract)
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typedef struct _LIBSSH2_USERAUTH_KBDINT_PROMPT
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{
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char* text;
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unsigned int length;
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unsigned char echo;
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} LIBSSH2_USERAUTH_KBDINT_PROMPT;
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typedef struct _LIBSSH2_USERAUTH_KBDINT_RESPONSE
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{
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char* text;
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unsigned int length;
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} LIBSSH2_USERAUTH_KBDINT_RESPONSE;
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/* 'keyboard-interactive' authentication callback */
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#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)
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/* Callbacks for special SSH packets */
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#define LIBSSH2_IGNORE_FUNC(name) void name(LIBSSH2_SESSION *session, const char *message, int message_len, void **abstract)
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#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)
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#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)
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#define LIBSSH2_PASSWD_CHANGEREQ_FUNC(name) void name(LIBSSH2_SESSION *session, char **newpw, int *newpw_len, void **abstract)
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#define LIBSSH2_MACERROR_FUNC(name) int name(LIBSSH2_SESSION *session, const char *packet, int packet_len, void **abstract)
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#define LIBSSH2_X11_OPEN_FUNC(name) void name(LIBSSH2_SESSION *session, LIBSSH2_CHANNEL *channel, const char *shost, int sport, void **abstract)
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#define LIBSSH2_CHANNEL_CLOSE_FUNC(name) void name(LIBSSH2_SESSION *session, void **session_abstract, LIBSSH2_CHANNEL *channel, void **channel_abstract)
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/* libssh2_session_callback_set() constants */
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#define LIBSSH2_CALLBACK_IGNORE 0
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#define LIBSSH2_CALLBACK_DEBUG 1
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#define LIBSSH2_CALLBACK_DISCONNECT 2
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#define LIBSSH2_CALLBACK_MACERROR 3
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#define LIBSSH2_CALLBACK_X11 4
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/* libssh2_session_method_pref() constants */
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#define LIBSSH2_METHOD_KEX 0
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#define LIBSSH2_METHOD_HOSTKEY 1
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#define LIBSSH2_METHOD_CRYPT_CS 2
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#define LIBSSH2_METHOD_CRYPT_SC 3
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#define LIBSSH2_METHOD_MAC_CS 4
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#define LIBSSH2_METHOD_MAC_SC 5
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#define LIBSSH2_METHOD_COMP_CS 6
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#define LIBSSH2_METHOD_COMP_SC 7
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#define LIBSSH2_METHOD_LANG_CS 8
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#define LIBSSH2_METHOD_LANG_SC 9
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/* session.flags bits */
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#define LIBSSH2_FLAG_SIGPIPE 0x00000001
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typedef struct _LIBSSH2_SESSION LIBSSH2_SESSION;
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typedef struct _LIBSSH2_CHANNEL LIBSSH2_CHANNEL;
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typedef struct _LIBSSH2_LISTENER LIBSSH2_LISTENER;
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typedef struct _LIBSSH2_POLLFD {
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unsigned char type; /* LIBSSH2_POLLFD_* below */
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union {
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int socket; /* File descriptors -- examined with system select() call */
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LIBSSH2_CHANNEL *channel; /* Examined by checking internal state */
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LIBSSH2_LISTENER *listener; /* Read polls only -- are inbound connections waiting to be accepted? */
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} fd;
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unsigned long events; /* Requested Events */
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unsigned long revents; /* Returned Events */
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} LIBSSH2_POLLFD;
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/* Poll FD Descriptor Types */
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#define LIBSSH2_POLLFD_SOCKET 1
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#define LIBSSH2_POLLFD_CHANNEL 2
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#define LIBSSH2_POLLFD_LISTENER 3
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/* Note: Win32 Doesn't actually have a poll() implementation, so some of these values are faked with select() data */
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/* Poll FD events/revents -- Match sys/poll.h where possible */
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#define LIBSSH2_POLLFD_POLLIN 0x0001 /* Data available to be read or connection available -- All */
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#define LIBSSH2_POLLFD_POLLPRI 0x0002 /* Priority data available to be read -- Socket only */
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#define LIBSSH2_POLLFD_POLLEXT 0x0002 /* Extended data available to be read -- Channel only */
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#define LIBSSH2_POLLFD_POLLOUT 0x0004 /* Can may be written -- Socket/Channel */
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/* revents only */
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#define LIBSSH2_POLLFD_POLLERR 0x0008 /* Error Condition -- Socket */
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#define LIBSSH2_POLLFD_POLLHUP 0x0010 /* HangUp/EOF -- Socket */
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#define LIBSSH2_POLLFD_SESSION_CLOSED 0x0010 /* Session Disconnect */
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#define LIBSSH2_POLLFD_POLLNVAL 0x0020 /* Invalid request -- Socket Only */
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#define LIBSSH2_POLLFD_POLLEX 0x0040 /* Exception Condition -- Socket/Win32 */
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#define LIBSSH2_POLLFD_CHANNEL_CLOSED 0x0080 /* Channel Disconnect */
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#define LIBSSH2_POLLFD_LISTENER_CLOSED 0x0080 /* Listener Disconnect */
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/* Hash Types */
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#define LIBSSH2_HOSTKEY_HASH_MD5 1
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#define LIBSSH2_HOSTKEY_HASH_SHA1 2
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/* Disconnect Codes (defined by SSH protocol) */
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#define SSH_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT 1
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#define SSH_DISCONNECT_PROTOCOL_ERROR 2
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#define SSH_DISCONNECT_KEY_EXCHANGE_FAILED 3
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#define SSH_DISCONNECT_RESERVED 4
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#define SSH_DISCONNECT_MAC_ERROR 5
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#define SSH_DISCONNECT_COMPRESSION_ERROR 6
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#define SSH_DISCONNECT_SERVICE_NOT_AVAILABLE 7
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#define SSH_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED 8
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#define SSH_DISCONNECT_HOST_KEY_NOT_VERIFIABLE 9
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#define SSH_DISCONNECT_CONNECTION_LOST 10
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#define SSH_DISCONNECT_BY_APPLICATION 11
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#define SSH_DISCONNECT_TOO_MANY_CONNECTIONS 12
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#define SSH_DISCONNECT_AUTH_CANCELLED_BY_USER 13
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#define SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE 14
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#define SSH_DISCONNECT_ILLEGAL_USER_NAME 15
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/* Error Codes (defined by libssh2) */
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#define LIBSSH2_ERROR_NONE 0
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#define LIBSSH2_ERROR_SOCKET_NONE -1
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#define LIBSSH2_ERROR_BANNER_NONE -2
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#define LIBSSH2_ERROR_BANNER_SEND -3
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#define LIBSSH2_ERROR_INVALID_MAC -4
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#define LIBSSH2_ERROR_KEX_FAILURE -5
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#define LIBSSH2_ERROR_ALLOC -6
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#define LIBSSH2_ERROR_SOCKET_SEND -7
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#define LIBSSH2_ERROR_KEY_EXCHANGE_FAILURE -8
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#define LIBSSH2_ERROR_TIMEOUT -9
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#define LIBSSH2_ERROR_HOSTKEY_INIT -10
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#define LIBSSH2_ERROR_HOSTKEY_SIGN -11
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#define LIBSSH2_ERROR_DECRYPT -12
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#define LIBSSH2_ERROR_SOCKET_DISCONNECT -13
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#define LIBSSH2_ERROR_PROTO -14
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#define LIBSSH2_ERROR_PASSWORD_EXPIRED -15
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#define LIBSSH2_ERROR_FILE -16
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#define LIBSSH2_ERROR_METHOD_NONE -17
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#define LIBSSH2_ERROR_PUBLICKEY_UNRECOGNIZED -18
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#define LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED -19
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#define LIBSSH2_ERROR_CHANNEL_OUTOFORDER -20
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#define LIBSSH2_ERROR_CHANNEL_FAILURE -21
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#define LIBSSH2_ERROR_CHANNEL_REQUEST_DENIED -22
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#define LIBSSH2_ERROR_CHANNEL_UNKNOWN -23
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#define LIBSSH2_ERROR_CHANNEL_WINDOW_EXCEEDED -24
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#define LIBSSH2_ERROR_CHANNEL_PACKET_EXCEEDED -25
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#define LIBSSH2_ERROR_CHANNEL_CLOSED -26
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#define LIBSSH2_ERROR_CHANNEL_EOF_SENT -27
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#define LIBSSH2_ERROR_SCP_PROTOCOL -28
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#define LIBSSH2_ERROR_ZLIB -29
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#define LIBSSH2_ERROR_SOCKET_TIMEOUT -30
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#define LIBSSH2_ERROR_SFTP_PROTOCOL -31
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#define LIBSSH2_ERROR_REQUEST_DENIED -32
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#define LIBSSH2_ERROR_METHOD_NOT_SUPPORTED -33
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#define LIBSSH2_ERROR_INVAL -34
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#define LIBSSH2_ERROR_INVALID_POLL_TYPE -35
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#define LIBSSH2_ERROR_PUBLICKEY_PROTOCOL -36
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#define LIBSSH2_ERROR_EAGAIN -37
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/* Session API */
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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);
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#define libssh2_session_init() libssh2_session_init_ex(NULL, NULL, NULL, NULL)
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LIBSSH2_API void **libssh2_session_abstract(LIBSSH2_SESSION *session);
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LIBSSH2_API void *libssh2_session_callback_set(LIBSSH2_SESSION *session, int cbtype, void *callback);
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LIBSSH2_API int libssh2_banner_set(LIBSSH2_SESSION *session, const char *banner);
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LIBSSH2_API int libssh2_session_startup(LIBSSH2_SESSION *session, int socket);
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LIBSSH2_API int libssh2_session_disconnect_ex(LIBSSH2_SESSION *session, int reason, const char *description, const char *lang);
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#define libssh2_session_disconnect(session, description) libssh2_session_disconnect_ex((session), SSH_DISCONNECT_BY_APPLICATION, (description), "")
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LIBSSH2_API int libssh2_session_free(LIBSSH2_SESSION *session);
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LIBSSH2_API const char *libssh2_hostkey_hash(LIBSSH2_SESSION *session, int hash_type);
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LIBSSH2_API int libssh2_session_method_pref(LIBSSH2_SESSION *session, int method_type, const char *prefs);
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LIBSSH2_API const char *libssh2_session_methods(LIBSSH2_SESSION *session, int method_type);
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LIBSSH2_API int libssh2_session_last_error(LIBSSH2_SESSION *session, char **errmsg, int *errmsg_len, int want_buf);
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LIBSSH2_API int libssh2_session_last_errno(LIBSSH2_SESSION *session);
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LIBSSH2_API int libssh2_session_flag(LIBSSH2_SESSION *session, int flag, int value);
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/* Userauth API */
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LIBSSH2_API char *libssh2_userauth_list(LIBSSH2_SESSION *session, const char *username, unsigned int username_len);
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LIBSSH2_API int libssh2_userauth_authenticated(LIBSSH2_SESSION *session);
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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)));
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#define libssh2_userauth_password(session, username, password) libssh2_userauth_password_ex((session), (username), strlen(username), (password), strlen(password), NULL)
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LIBSSH2_API int libssh2_userauth_publickey_fromfile_ex(LIBSSH2_SESSION *session, const char *username, unsigned int username_len,
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const char *publickey, const char *privatekey,
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const char *passphrase);
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#define libssh2_userauth_publickey_fromfile(session, username, publickey, privatekey, passphrase) \
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libssh2_userauth_publickey_fromfile_ex((session), (username), strlen(username), (publickey), (privatekey), (passphrase))
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LIBSSH2_API int libssh2_userauth_hostbased_fromfile_ex(LIBSSH2_SESSION *session, const char *username, unsigned int username_len,
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const char *publickey, const char *privatekey,
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const char *passphrase,
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const char *hostname, unsigned int hostname_len,
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const char *local_username, unsigned int local_username_len);
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#define libssh2_userauth_hostbased_fromfile(session, username, publickey, privatekey, passphrase, hostname) \
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libssh2_userauth_hostbased_fromfile_ex((session), (username), strlen(username), (publickey), (privatekey), (passphrase), (hostname), strlen(hostname), (username), strlen(username))
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/*
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* response_callback is provided with filled by library prompts array,
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* but client must allocate and fill individual responses. Responses
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* array is already allocated. Responses data will be freed by libssh2
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* after callback return, but before subsequent callback invokation.
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*/
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LIBSSH2_API int libssh2_userauth_keyboard_interactive_ex(LIBSSH2_SESSION* session, const char *username, unsigned int username_len,
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LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC((*response_callback)));
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#define libssh2_userauth_keyboard_interactive(session, username, response_callback) \
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libssh2_userauth_keyboard_interactive_ex((session), (username), strlen(username), (response_callback))
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LIBSSH2_API int libssh2_poll(LIBSSH2_POLLFD *fds, unsigned int nfds, long timeout);
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/* Channel API */
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#define LIBSSH2_CHANNEL_WINDOW_DEFAULT 65536
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#define LIBSSH2_CHANNEL_PACKET_DEFAULT 16384
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#define LIBSSH2_CHANNEL_MINADJUST 1024
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/* Extended Data Handling */
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#define LIBSSH2_CHANNEL_EXTENDED_DATA_NORMAL 0
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#define LIBSSH2_CHANNEL_EXTENDED_DATA_IGNORE 1
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#define LIBSSH2_CHANNEL_EXTENDED_DATA_MERGE 2
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#define SSH_EXTENDED_DATA_STDERR 1
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/* Returned by any function that would block during a read/write opperation */
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#define LIBSSH2CHANNEL_EAGAIN LIBSSH2_ERROR_EAGAIN
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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);
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#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)
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LIBSSH2_API LIBSSH2_CHANNEL *libssh2_channel_direct_tcpip_ex(LIBSSH2_SESSION *session, const char *host, int port, const char *shost, int sport);
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#define libssh2_channel_direct_tcpip(session, host, port) libssh2_channel_direct_tcpip_ex((session), (host), (port), "127.0.0.1", 22)
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LIBSSH2_API LIBSSH2_LISTENER *libssh2_channel_forward_listen_ex(LIBSSH2_SESSION *session, const char *host, int port, int *bound_port, int queue_maxsize);
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#define libssh2_channel_forward_listen(session, port) libssh2_channel_forward_listen_ex((session), NULL, (port), NULL, 16)
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LIBSSH2_API int libssh2_channel_forward_cancel(LIBSSH2_LISTENER *listener);
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LIBSSH2_API LIBSSH2_CHANNEL *libssh2_channel_forward_accept(LIBSSH2_LISTENER *listener);
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LIBSSH2_API int libssh2_channel_setenv_ex(LIBSSH2_CHANNEL *channel, char *varname, unsigned int varname_len, const char *value, unsigned int value_len);
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#define libssh2_channel_setenv(channel, varname, value) libssh2_channel_setenv_ex((channel), (varname), strlen(varname), (value), strlen(value))
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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);
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#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)
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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);
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#define libssh2_channel_x11_req(channel, screen_number) libssh2_channel_x11_req_ex((channel), 0, NULL, NULL, (screen_number))
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LIBSSH2_API int libssh2_channel_process_startup(LIBSSH2_CHANNEL *channel, const char *request, unsigned int request_len, const char *message, unsigned int message_len);
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#define libssh2_channel_shell(channel) libssh2_channel_process_startup((channel), "shell", sizeof("shell") - 1, NULL, 0)
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#define libssh2_channel_exec(channel, command) libssh2_channel_process_startup((channel), "exec", sizeof("exec") - 1, (command), strlen(command))
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#define libssh2_channel_subsystem(channel, subsystem) libssh2_channel_process_startup((channel), "subsystem", sizeof("subsystem") - 1, (subsystem), strlen(subsystem))
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LIBSSH2_API ssize_t libssh2_channel_read_ex(LIBSSH2_CHANNEL *channel, int stream_id, char *buf, size_t buflen);
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#define libssh2_channel_read(channel, buf, buflen) \
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libssh2_channel_read_ex((channel), 0, (buf), (buflen))
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#define libssh2_channel_read_stderr(channel, buf, buflen) \
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libssh2_channel_read_ex((channel), SSH_EXTENDED_DATA_STDERR, (buf), (buflen))
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LIBSSH2_API int libssh2_poll_channel_read(LIBSSH2_CHANNEL *channel, int extended);
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LIBSSH2_API unsigned long libssh2_channel_window_read_ex(LIBSSH2_CHANNEL *channel, unsigned long *read_avail, unsigned long *window_size_initial);
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#define libssh2_channel_window_read(channel) \
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libssh2_channel_window_read_ex((channel), NULL, NULL)
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LIBSSH2_API unsigned long libssh2_channel_receive_window_adjust(LIBSSH2_CHANNEL *channel, unsigned long adjustment, unsigned char force);
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LIBSSH2_API ssize_t libssh2_channel_write_ex(LIBSSH2_CHANNEL *channel, int stream_id, const char *buf, size_t buflen);
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#define libssh2_channel_write(channel, buf, buflen) \
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libssh2_channel_write_ex((channel), 0, (buf), (buflen))
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#define libssh2_channel_write_stderr(channel, buf, buflen) \
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libssh2_channel_write_ex((channel), SSH_EXTENDED_DATA_STDERR, (buf), (buflen))
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LIBSSH2_API unsigned long libssh2_channel_window_write_ex(LIBSSH2_CHANNEL *channel, unsigned long *window_size_initial);
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#define libssh2_channel_window_write(channel) libssh2_channel_window_write_ex((channel), NULL)
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LIBSSH2_API void libssh2_session_set_blocking(LIBSSH2_SESSION* session, int blocking);
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LIBSSH2_API int libssh2_session_get_blocking(LIBSSH2_SESSION* session);
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LIBSSH2_API void libssh2_channel_set_blocking(LIBSSH2_CHANNEL *channel, int blocking);
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LIBSSH2_API void libssh2_channel_handle_extended_data(LIBSSH2_CHANNEL *channel, int ignore_mode);
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LIBSSH2_API int libssh2_channel_handle_extended_data2(LIBSSH2_CHANNEL *channel, int ignore_mode);
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/* libssh2_channel_ignore_extended_data() is defined below for BC with version 0.1
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* Future uses should use libssh2_channel_handle_extended_data() directly
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* if LIBSSH2_CHANNEL_EXTENDED_DATA_MERGE is passed, extended data will be read (FIFO) from the standard data channel
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*/
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/* DEPRECATED */
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#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 )
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#define LIBSSH2_CHANNEL_FLUSH_EXTENDED_DATA -1
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#define LIBSSH2_CHANNEL_FLUSH_ALL -2
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LIBSSH2_API int libssh2_channel_flush_ex(LIBSSH2_CHANNEL *channel, int streamid);
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#define libssh2_channel_flush(channel) libssh2_channel_flush_ex((channel), 0)
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#define libssh2_channel_flush_stderr(channel) libssh2_channel_flush_ex((channel), SSH_EXTENDED_DATA_STDERR)
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LIBSSH2_API int libssh2_channel_get_exit_status(LIBSSH2_CHANNEL* channel);
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LIBSSH2_API int libssh2_channel_send_eof(LIBSSH2_CHANNEL *channel);
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LIBSSH2_API int libssh2_channel_eof(LIBSSH2_CHANNEL *channel);
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LIBSSH2_API int libssh2_channel_wait_eof(LIBSSH2_CHANNEL *channel);
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LIBSSH2_API int libssh2_channel_close(LIBSSH2_CHANNEL *channel);
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LIBSSH2_API int libssh2_channel_wait_closed(LIBSSH2_CHANNEL *channel);
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LIBSSH2_API int libssh2_channel_free(LIBSSH2_CHANNEL *channel);
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LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_recv(LIBSSH2_SESSION *session, const char *path, struct stat *sb);
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LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_send_ex(LIBSSH2_SESSION *session, const char *path, int mode, size_t size, long mtime, long atime);
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#define libssh2_scp_send(session, path, mode, size) libssh2_scp_send_ex((session), (path), (mode), (size), 0, 0)
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LIBSSH2_API int libssh2_base64_decode(LIBSSH2_SESSION *session, char **dest, unsigned int *dest_len, const char *src, unsigned int src_len);
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/* NOTE NOTE NOTE
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libssh2_trace() has no function in builds that aren't built with debug
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enabled
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*/
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LIBSSH2_API int libssh2_trace(LIBSSH2_SESSION *session, int bitmask);
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#define LIBSSH2_TRACE_TRANS (1<<1)
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#define LIBSSH2_TRACE_KEX (1<<2)
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#define LIBSSH2_TRACE_AUTH (1<<3)
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#define LIBSSH2_TRACE_CONN (1<<4)
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#define LIBSSH2_TRACE_SCP (1<<5)
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#define LIBSSH2_TRACE_SFTP (1<<6)
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#define LIBSSH2_TRACE_ERROR (1<<7)
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#define LIBSSH2_TRACE_PUBLICKEY (1<<8)
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* LIBSSH2_H */
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