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libssh2-1.8.1
include/libssh2.h
1 306 строк
51 KB
Will Cosgrove
1.8 Security fixes (#314)
14 мар 2019, 23:14
Не верифицирован
14 мар 2019, 23:14
c286e4d
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/* Copyright (c) 2004-2009, Sara Golemon <sarag@libssh2.org> * Copyright (c) 2009-2015 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 "2004-2016 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 "1.7.0_DEV" /* The numeric version number is also available "in parts" by using these defines: */ #define LIBSSH2_VERSION_MAJOR 1 #define LIBSSH2_VERSION_MINOR 7 #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 0x010700 /* * 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 _WINDLL # ifdef LIBSSH2_LIBRARY # define LIBSSH2_API __declspec(dllexport) # else # define LIBSSH2_API __declspec(dllimport) # endif /* LIBSSH2_LIBRARY */ # else # define LIBSSH2_API # endif # else /* !LIBSSH2_WIN32 */ # define LIBSSH2_API # endif /* LIBSSH2_WIN32 */ #endif /* LIBSSH2_API */ #ifdef HAVE_SYS_UIO_H # 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; #define LIBSSH2_INVALID_SOCKET INVALID_SOCKET #else /* !WIN32 */ typedef int libssh2_socket_t; #define LIBSSH2_INVALID_SOCKET -1 #endif /* WIN32 */ #ifndef SIZE_MAX #if _WIN64 #define SIZE_MAX 0xFFFFFFFFFFFFFFFF #else #define SIZE_MAX 0xFFFFFFFF #endif #endif #ifndef UINT_MAX #define UINT_MAX 0xFFFFFFFF #endif /* * Determine whether there is small or large file support on windows. */ #if defined(_MSC_VER) && !defined(_WIN32_WCE) # if (_MSC_VER >= 900) && (_INTEGRAL_MAX_BITS >= 64) # define LIBSSH2_USE_WIN32_LARGE_FILES # else # define LIBSSH2_USE_WIN32_SMALL_FILES # endif #endif #if defined(__MINGW32__) && !defined(LIBSSH2_USE_WIN32_LARGE_FILES) # define LIBSSH2_USE_WIN32_LARGE_FILES #endif #if defined(__WATCOMC__) && !defined(LIBSSH2_USE_WIN32_LARGE_FILES) # define LIBSSH2_USE_WIN32_LARGE_FILES #endif #if defined(__POCC__) # undef LIBSSH2_USE_WIN32_LARGE_FILES #endif #if defined(_WIN32) && !defined(LIBSSH2_USE_WIN32_LARGE_FILES) && \ !defined(LIBSSH2_USE_WIN32_SMALL_FILES) # define LIBSSH2_USE_WIN32_SMALL_FILES #endif /* * Large file (>2Gb) support using WIN32 functions. */ #ifdef LIBSSH2_USE_WIN32_LARGE_FILES # include <io.h> # include <sys/types.h> # include <sys/stat.h> # define LIBSSH2_STRUCT_STAT_SIZE_FORMAT "%I64d" typedef struct _stati64 libssh2_struct_stat; typedef __int64 libssh2_struct_stat_size; #endif /* * Small file (<2Gb) support using WIN32 functions. */ #ifdef LIBSSH2_USE_WIN32_SMALL_FILES # include <sys/types.h> # include <sys/stat.h> # ifndef _WIN32_WCE # define LIBSSH2_STRUCT_STAT_SIZE_FORMAT "%d" typedef struct _stat libssh2_struct_stat; typedef off_t libssh2_struct_stat_size; # endif #endif #ifndef LIBSSH2_STRUCT_STAT_SIZE_FORMAT # ifdef __VMS /* We have to roll our own format here because %z is a C99-ism we don't have. */ # if __USE_OFF64_T || __USING_STD_STAT # define LIBSSH2_STRUCT_STAT_SIZE_FORMAT "%Ld" # else # define LIBSSH2_STRUCT_STAT_SIZE_FORMAT "%d" # endif # else # define LIBSSH2_STRUCT_STAT_SIZE_FORMAT "%zd" # endif typedef struct stat libssh2_struct_stat; typedef off_t libssh2_struct_stat_size; #endif /* 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 { libssh2_socket_t 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 #define LIBSSH2_ERROR_KNOWN_HOSTS -46 /* 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_set_last_error(LIBSSH2_SESSION* session, int errcode, const char* errmsg); 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), \ (unsigned int)strlen(username), \ (password), (unsigned int)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), \ (unsigned int)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), \ (unsigned int)strlen(username), \ (publickey), \ (privatekey), (passphrase), \ (hostname), \ (unsigned int)strlen(hostname), \ (username), \ (unsigned int)strlen(username)) LIBSSH2_API int libssh2_userauth_publickey_frommemory(LIBSSH2_SESSION *session, const char *username, size_t username_len, const char *publickeyfiledata, size_t publickeyfiledata_len, const char *privatekeyfiledata, size_t privatekeyfiledata_len, const char *passphrase); /* * 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), \ (unsigned int)strlen(username), \ (response_callback)) LIBSSH2_API int libssh2_poll(LIBSSH2_POLLFD *fds, unsigned int nfds, long timeout); /* Channel API */ #define LIBSSH2_CHANNEL_WINDOW_DEFAULT (2*1024*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), \ (unsigned int)strlen(varname), (value), \ (unsigned int)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), \ (unsigned int)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), (unsigned int)strlen(command)) #define libssh2_channel_subsystem(channel, subsystem) \ libssh2_channel_process_startup((channel), "subsystem", \ sizeof("subsystem") - 1, (subsystem), \ (unsigned int)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_scp_recv is DEPRECATED, do not use! */ LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_recv(LIBSSH2_SESSION *session, const char *path, struct stat *sb); /* Use libssh2_scp_recv2 for large (> 2GB) file support on windows */ LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_recv2(LIBSSH2_SESSION *session, const char *path, libssh2_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 (7<<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) #define LIBSSH2_KNOWNHOST_KEY_UNKNOWN (7<<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 */