246 lines
8.0 KiB
C
246 lines
8.0 KiB
C
|
#ifndef HEADER_CURL_SSH_H
|
||
|
|
#define HEADER_CURL_SSH_H
|
||
|
|
/***************************************************************************
|
||
|
|
* _ _ ____ _
|
||
|
|
* Project ___| | | | _ \| |
|
||
|
|
* / __| | | | |_) | |
|
||
|
|
* | (__| |_| | _ <| |___
|
||
|
|
* \___|\___/|_| \_\_____|
|
||
|
|
*
|
||
|
|
* Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
|
||
|
|
*
|
||
|
|
* This software is licensed as described in the file COPYING, which
|
||
|
|
* you should have received as part of this distribution. The terms
|
||
|
|
* are also available at https://curl.haxx.se/docs/copyright.html.
|
||
|
|
*
|
||
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
||
|
|
* copies of the Software, and permit persons to whom the Software is
|
||
|
|
* furnished to do so, under the terms of the COPYING file.
|
||
|
|
*
|
||
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||
|
|
* KIND, either express or implied.
|
||
|
|
*
|
||
|
|
***************************************************************************/
|
||
|
|
|
||
|
|
#include "curl_setup.h"
|
||
|
|
|
||
|
|
#if defined(HAVE_LIBSSH2_H)
|
||
|
|
#include <libssh2.h>
|
||
|
|
#include <libssh2_sftp.h>
|
||
|
|
#elif defined(HAVE_LIBSSH_LIBSSH_H)
|
||
|
|
#include <libssh/libssh.h>
|
||
|
|
#include <libssh/sftp.h>
|
||
|
|
#endif /* HAVE_LIBSSH2_H */
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* SSH unique setup
|
||
|
|
***************************************************************************/
|
||
|
|
typedef enum {
|
||
|
|
SSH_NO_STATE = -1, /* Used for "nextState" so say there is none */
|
||
|
|
SSH_STOP = 0, /* do nothing state, stops the state machine */
|
||
|
|
|
||
|
|
SSH_INIT, /* First state in SSH-CONNECT */
|
||
|
|
SSH_S_STARTUP, /* Session startup */
|
||
|
|
SSH_HOSTKEY, /* verify hostkey */
|
||
|
|
SSH_AUTHLIST,
|
||
|
|
SSH_AUTH_PKEY_INIT,
|
||
|
|
SSH_AUTH_PKEY,
|
||
|
|
SSH_AUTH_PASS_INIT,
|
||
|
|
SSH_AUTH_PASS,
|
||
|
|
SSH_AUTH_AGENT_INIT, /* initialize then wait for connection to agent */
|
||
|
|
SSH_AUTH_AGENT_LIST, /* ask for list then wait for entire list to come */
|
||
|
|
SSH_AUTH_AGENT, /* attempt one key at a time */
|
||
|
|
SSH_AUTH_HOST_INIT,
|
||
|
|
SSH_AUTH_HOST,
|
||
|
|
SSH_AUTH_KEY_INIT,
|
||
|
|
SSH_AUTH_KEY,
|
||
|
|
SSH_AUTH_GSSAPI,
|
||
|
|
SSH_AUTH_DONE,
|
||
|
|
SSH_SFTP_INIT,
|
||
|
|
SSH_SFTP_REALPATH, /* Last state in SSH-CONNECT */
|
||
|
|
|
||
|
|
SSH_SFTP_QUOTE_INIT, /* First state in SFTP-DO */
|
||
|
|
SSH_SFTP_POSTQUOTE_INIT, /* (Possibly) First state in SFTP-DONE */
|
||
|
|
SSH_SFTP_QUOTE,
|
||
|
|
SSH_SFTP_NEXT_QUOTE,
|
||
|
|
SSH_SFTP_QUOTE_STAT,
|
||
|
|
SSH_SFTP_QUOTE_SETSTAT,
|
||
|
|
SSH_SFTP_QUOTE_SYMLINK,
|
||
|
|
SSH_SFTP_QUOTE_MKDIR,
|
||
|
|
SSH_SFTP_QUOTE_RENAME,
|
||
|
|
SSH_SFTP_QUOTE_RMDIR,
|
||
|
|
SSH_SFTP_QUOTE_UNLINK,
|
||
|
|
SSH_SFTP_QUOTE_STATVFS,
|
||
|
|
SSH_SFTP_GETINFO,
|
||
|
|
SSH_SFTP_FILETIME,
|
||
|
|
SSH_SFTP_TRANS_INIT,
|
||
|
|
SSH_SFTP_UPLOAD_INIT,
|
||
|
|
SSH_SFTP_CREATE_DIRS_INIT,
|
||
|
|
SSH_SFTP_CREATE_DIRS,
|
||
|
|
SSH_SFTP_CREATE_DIRS_MKDIR,
|
||
|
|
SSH_SFTP_READDIR_INIT,
|
||
|
|
SSH_SFTP_READDIR,
|
||
|
|
SSH_SFTP_READDIR_LINK,
|
||
|
|
SSH_SFTP_READDIR_BOTTOM,
|
||
|
|
SSH_SFTP_READDIR_DONE,
|
||
|
|
SSH_SFTP_DOWNLOAD_INIT,
|
||
|
|
SSH_SFTP_DOWNLOAD_STAT, /* Last state in SFTP-DO */
|
||
|
|
SSH_SFTP_CLOSE, /* Last state in SFTP-DONE */
|
||
|
|
SSH_SFTP_SHUTDOWN, /* First state in SFTP-DISCONNECT */
|
||
|
|
SSH_SCP_TRANS_INIT, /* First state in SCP-DO */
|
||
|
|
SSH_SCP_UPLOAD_INIT,
|
||
|
|
SSH_SCP_DOWNLOAD_INIT,
|
||
|
|
SSH_SCP_DOWNLOAD,
|
||
|
|
SSH_SCP_DONE,
|
||
|
|
SSH_SCP_SEND_EOF,
|
||
|
|
SSH_SCP_WAIT_EOF,
|
||
|
|
SSH_SCP_WAIT_CLOSE,
|
||
|
|
SSH_SCP_CHANNEL_FREE, /* Last state in SCP-DONE */
|
||
|
|
SSH_SESSION_DISCONNECT, /* First state in SCP-DISCONNECT */
|
||
|
|
SSH_SESSION_FREE, /* Last state in SCP/SFTP-DISCONNECT */
|
||
|
|
SSH_QUIT,
|
||
|
|
SSH_LAST /* never used */
|
||
|
|
} sshstate;
|
||
|
|
|
||
|
|
/* this struct is used in the HandleData struct which is part of the
|
||
|
|
Curl_easy, which means this is used on a per-easy handle basis.
|
||
|
|
Everything that is strictly related to a connection is banned from this
|
||
|
|
struct. */
|
||
|
|
struct SSHPROTO {
|
||
|
|
char *path; /* the path we operate on */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* ssh_conn is used for struct connection-oriented data in the connectdata
|
||
|
|
struct */
|
||
|
|
struct ssh_conn {
|
||
|
|
const char *authlist; /* List of auth. methods, managed by libssh2 */
|
||
|
|
|
||
|
|
/* common */
|
||
|
|
const char *passphrase; /* pass-phrase to use */
|
||
|
|
char *rsa_pub; /* path name */
|
||
|
|
char *rsa; /* path name */
|
||
|
|
bool authed; /* the connection has been authenticated fine */
|
||
|
|
sshstate state; /* always use ssh.c:state() to change state! */
|
||
|
|
sshstate nextstate; /* the state to goto after stopping */
|
||
|
|
CURLcode actualcode; /* the actual error code */
|
||
|
|
struct curl_slist *quote_item; /* for the quote option */
|
||
|
|
char *quote_path1; /* two generic pointers for the QUOTE stuff */
|
||
|
|
char *quote_path2;
|
||
|
|
|
||
|
|
bool acceptfail; /* used by the SFTP_QUOTE (continue if
|
||
|
|
quote command fails) */
|
||
|
|
char *homedir; /* when doing SFTP we figure out home dir in the
|
||
|
|
connect phase */
|
||
|
|
size_t readdir_len, readdir_totalLen, readdir_currLen;
|
||
|
|
char *readdir_line;
|
||
|
|
char *readdir_linkPath;
|
||
|
|
/* end of READDIR stuff */
|
||
|
|
|
||
|
|
int secondCreateDirs; /* counter use by the code to see if the
|
||
|
|
second attempt has been made to change
|
||
|
|
to/create a directory */
|
||
|
|
char *slash_pos; /* used by the SFTP_CREATE_DIRS state */
|
||
|
|
|
||
|
|
int orig_waitfor; /* default READ/WRITE bits wait for */
|
||
|
|
|
||
|
|
#if defined(USE_LIBSSH)
|
||
|
|
/* our variables */
|
||
|
|
unsigned kbd_state; /* 0 or 1 */
|
||
|
|
ssh_key privkey;
|
||
|
|
ssh_key pubkey;
|
||
|
|
int auth_methods;
|
||
|
|
ssh_session ssh_session;
|
||
|
|
ssh_scp scp_session;
|
||
|
|
sftp_session sftp_session;
|
||
|
|
sftp_file sftp_file;
|
||
|
|
sftp_dir sftp_dir;
|
||
|
|
|
||
|
|
unsigned sftp_recv_state; /* 0 or 1 */
|
||
|
|
int sftp_file_index; /* for async read */
|
||
|
|
sftp_attributes readdir_attrs; /* used by the SFTP readdir actions */
|
||
|
|
sftp_attributes readdir_link_attrs; /* used by the SFTP readdir actions */
|
||
|
|
sftp_attributes quote_attrs; /* used by the SFTP_QUOTE state */
|
||
|
|
|
||
|
|
const char *readdir_filename; /* points within readdir_attrs */
|
||
|
|
const char *readdir_longentry;
|
||
|
|
char *readdir_tmp;
|
||
|
|
#elif defined(USE_LIBSSH2)
|
||
|
|
char *readdir_filename;
|
||
|
|
char *readdir_longentry;
|
||
|
|
|
||
|
|
LIBSSH2_SFTP_ATTRIBUTES quote_attrs; /* used by the SFTP_QUOTE state */
|
||
|
|
|
||
|
|
/* Here's a set of struct members used by the SFTP_READDIR state */
|
||
|
|
LIBSSH2_SFTP_ATTRIBUTES readdir_attrs;
|
||
|
|
LIBSSH2_SESSION *ssh_session; /* Secure Shell session */
|
||
|
|
LIBSSH2_CHANNEL *ssh_channel; /* Secure Shell channel handle */
|
||
|
|
LIBSSH2_SFTP *sftp_session; /* SFTP handle */
|
||
|
|
LIBSSH2_SFTP_HANDLE *sftp_handle;
|
||
|
|
|
||
|
|
#ifdef HAVE_LIBSSH2_AGENT_API
|
||
|
|
LIBSSH2_AGENT *ssh_agent; /* proxy to ssh-agent/pageant */
|
||
|
|
struct libssh2_agent_publickey *sshagent_identity,
|
||
|
|
*sshagent_prev_identity;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* note that HAVE_LIBSSH2_KNOWNHOST_API is a define set in the libssh2.h
|
||
|
|
header */
|
||
|
|
#ifdef HAVE_LIBSSH2_KNOWNHOST_API
|
||
|
|
LIBSSH2_KNOWNHOSTS *kh;
|
||
|
|
#endif
|
||
|
|
#endif /* USE_LIBSSH */
|
||
|
|
};
|
||
|
|
|
||
|
|
#if defined(USE_LIBSSH)
|
||
|
|
|
||
|
|
#define CURL_LIBSSH_VERSION ssh_version(0)
|
||
|
|
|
||
|
|
extern const struct Curl_handler Curl_handler_scp;
|
||
|
|
extern const struct Curl_handler Curl_handler_sftp;
|
||
|
|
|
||
|
|
#elif defined(USE_LIBSSH2)
|
||
|
|
|
||
|
|
/* Feature detection based on version numbers to better work with
|
||
|
|
non-configure platforms */
|
||
|
|
|
||
|
|
#if !defined(LIBSSH2_VERSION_NUM) || (LIBSSH2_VERSION_NUM < 0x001000)
|
||
|
|
# error "SCP/SFTP protocols require libssh2 0.16 or later"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if LIBSSH2_VERSION_NUM >= 0x010000
|
||
|
|
#define HAVE_LIBSSH2_SFTP_SEEK64 1
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if LIBSSH2_VERSION_NUM >= 0x010100
|
||
|
|
#define HAVE_LIBSSH2_VERSION 1
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if LIBSSH2_VERSION_NUM >= 0x010205
|
||
|
|
#define HAVE_LIBSSH2_INIT 1
|
||
|
|
#define HAVE_LIBSSH2_EXIT 1
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if LIBSSH2_VERSION_NUM >= 0x010206
|
||
|
|
#define HAVE_LIBSSH2_KNOWNHOST_CHECKP 1
|
||
|
|
#define HAVE_LIBSSH2_SCP_SEND64 1
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if LIBSSH2_VERSION_NUM >= 0x010208
|
||
|
|
#define HAVE_LIBSSH2_SESSION_HANDSHAKE 1
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef HAVE_LIBSSH2_VERSION
|
||
|
|
/* get it run-time if possible */
|
||
|
|
#define CURL_LIBSSH2_VERSION libssh2_version(0)
|
||
|
|
#else
|
||
|
|
/* use build-time if run-time not possible */
|
||
|
|
#define CURL_LIBSSH2_VERSION LIBSSH2_VERSION
|
||
|
|
#endif
|
||
|
|
|
||
|
|
extern const struct Curl_handler Curl_handler_scp;
|
||
|
|
extern const struct Curl_handler Curl_handler_sftp;
|
||
|
|
|
||
|
|
#endif /* USE_LIBSSH2 */
|
||
|
|
|
||
|
|
#endif /* HEADER_CURL_SSH_H */
|