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<?php
namespace Safe;
use Safe\Exceptions\Ssh2Exception;
/**
* Authenticate over SSH using the ssh agent
*
* @param resource $session An SSH connection link identifier, obtained from a call to
* ssh2_connect.
* @param string $username Remote user name.
* @throws Ssh2Exception
*
*/
function ssh2_auth_agent($session, string $username): void
{
error_clear_last();
$result = \ssh2_auth_agent($session, $username);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Authenticate using a public hostkey read from a file.
*
* @param resource $session An SSH connection link identifier, obtained from a call to
* ssh2_connect.
* @param string $username
* @param string $hostname
* @param string $pubkeyfile
* @param string $privkeyfile
* @param string $passphrase If privkeyfile is encrypted (which it should
* be), the passphrase must be provided.
* @param string $local_username If local_username is omitted, then the value
* for username will be used for it.
* @throws Ssh2Exception
*
*/
function ssh2_auth_hostbased_file($session, string $username, string $hostname, string $pubkeyfile, string $privkeyfile, string $passphrase = null, string $local_username = null): void
{
error_clear_last();
if ($local_username !== null) {
$result = \ssh2_auth_hostbased_file($session, $username, $hostname, $pubkeyfile, $privkeyfile, $passphrase, $local_username);
} elseif ($passphrase !== null) {
$result = \ssh2_auth_hostbased_file($session, $username, $hostname, $pubkeyfile, $privkeyfile, $passphrase);
} else {
$result = \ssh2_auth_hostbased_file($session, $username, $hostname, $pubkeyfile, $privkeyfile);
}
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Authenticate over SSH using a plain password. Since version 0.12 this function
* also supports keyboard_interactive method.
*
* @param resource $session An SSH connection link identifier, obtained from a call to
* ssh2_connect.
* @param string $username Remote user name.
* @param string $password Password for username
* @throws Ssh2Exception
*
*/
function ssh2_auth_password($session, string $username, string $password): void
{
error_clear_last();
$result = \ssh2_auth_password($session, $username, $password);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Authenticate using a public key read from a file.
*
* @param resource $session An SSH connection link identifier, obtained from a call to
* ssh2_connect.
* @param string $username
* @param string $pubkeyfile The public key file needs to be in OpenSSH's format. It should look something like:
*
* ssh-rsa AAAAB3NzaC1yc2EAAA....NX6sqSnHA8= rsa-key-20121110
* @param string $privkeyfile
* @param string $passphrase If privkeyfile is encrypted (which it should
* be), the passphrase must be provided.
* @throws Ssh2Exception
*
*/
function ssh2_auth_pubkey_file($session, string $username, string $pubkeyfile, string $privkeyfile, string $passphrase = null): void
{
error_clear_last();
if ($passphrase !== null) {
$result = \ssh2_auth_pubkey_file($session, $username, $pubkeyfile, $privkeyfile, $passphrase);
} else {
$result = \ssh2_auth_pubkey_file($session, $username, $pubkeyfile, $privkeyfile);
}
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Establish a connection to a remote SSH server.
*
* Once connected, the client should verify the server's hostkey using
* ssh2_fingerprint, then authenticate using either
* password or public key.
*
* @param string $host
* @param int $port
* @param array $methods methods may be an associative array with up to four parameters
* as described below.
*
*
* methods may be an associative array
* with any or all of the following parameters.
*
*
*
* Index
* Meaning
* Supported Values*
*
*
*
*
* kex
*
* List of key exchange methods to advertise, comma separated
* in order of preference.
*
*
* diffie-hellman-group1-sha1,
* diffie-hellman-group14-sha1, and
* diffie-hellman-group-exchange-sha1
*
*
*
* hostkey
*
* List of hostkey methods to advertise, comma separated
* in order of preference.
*
*
* ssh-rsa and
* ssh-dss
*
*
*
* client_to_server
*
* Associative array containing crypt, compression, and
* message authentication code (MAC) method preferences
* for messages sent from client to server.
*
*
*
*
* server_to_client
*
* Associative array containing crypt, compression, and
* message authentication code (MAC) method preferences
* for messages sent from server to client.
*
*
*
*
*
*
*
* * - Supported Values are dependent on methods supported by underlying library.
* See libssh2 documentation for additional
* information.
*
*
*
* client_to_server and
* server_to_client may be an associative array
* with any or all of the following parameters.
*
*
*
*
* Index
* Meaning
* Supported Values*
*
*
*
*
* crypt
* List of crypto methods to advertise, comma separated
* in order of preference.
*
* rijndael-cbc@lysator.liu.se,
* aes256-cbc,
* aes192-cbc,
* aes128-cbc,
* 3des-cbc,
* blowfish-cbc,
* cast128-cbc,
* arcfour, and
* none**
*
*
*
* comp
* List of compression methods to advertise, comma separated
* in order of preference.
*
* zlib and
* none
*
*
*
* mac
* List of MAC methods to advertise, comma separated
* in order of preference.
*
* hmac-sha1,
* hmac-sha1-96,
* hmac-ripemd160,
* hmac-ripemd160@openssh.com, and
* none**
*
*
*
*
*
*
*
* Crypt and MAC method "none"
*
* For security reasons, none is disabled by the underlying
* libssh2 library unless explicitly enabled
* during build time by using the appropriate ./configure options. See documentation
* for the underlying library for more information.
*
*
*
* For security reasons, none is disabled by the underlying
* libssh2 library unless explicitly enabled
* during build time by using the appropriate ./configure options. See documentation
* for the underlying library for more information.
* @param array $callbacks callbacks may be an associative array with any
* or all of the following parameters.
*
*
* Callbacks parameters
*
*
*
*
* Index
* Meaning
* Prototype
*
*
*
*
* ignore
*
* Name of function to call when an
* SSH2_MSG_IGNORE packet is received
*
* void ignore_cb($message)
*
*
* debug
*
* Name of function to call when an
* SSH2_MSG_DEBUG packet is received
*
* void debug_cb($message, $language, $always_display)
*
*
* macerror
*
* Name of function to call when a packet is received but the
* message authentication code failed. If the callback returns
* TRUE, the mismatch will be ignored, otherwise the connection
* will be terminated.
*
* bool macerror_cb($packet)
*
*
* disconnect
*
* Name of function to call when an
* SSH2_MSG_DISCONNECT packet is received
*
* void disconnect_cb($reason, $message, $language)
*
*
*
*
* @return resource Returns a resource on success.
* @throws Ssh2Exception
*
*/
function ssh2_connect(string $host, int $port = 22, array $methods = null, array $callbacks = null)
{
error_clear_last();
if ($callbacks !== null) {
$result = \ssh2_connect($host, $port, $methods, $callbacks);
} elseif ($methods !== null) {
$result = \ssh2_connect($host, $port, $methods);
} else {
$result = \ssh2_connect($host, $port);
}
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
return $result;
}
/**
* Close a connection to a remote SSH server.
*
* @param resource $session An SSH connection link identifier, obtained from a call to
* ssh2_connect.
* @throws Ssh2Exception
*
*/
function ssh2_disconnect($session): void
{
error_clear_last();
$result = \ssh2_disconnect($session);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Execute a command at the remote end and allocate a channel for it.
*
* @param resource $session An SSH connection link identifier, obtained from a call to
* ssh2_connect.
* @param string $command
* @param string $pty
* @param array $env env may be passed as an associative array of
* name/value pairs to set in the target environment.
* @param int $width Width of the virtual terminal.
* @param int $height Height of the virtual terminal.
* @param int $width_height_type width_height_type should be one of
* SSH2_TERM_UNIT_CHARS or
* SSH2_TERM_UNIT_PIXELS.
* @return resource Returns a stream on success.
* @throws Ssh2Exception
*
*/
function ssh2_exec($session, string $command, string $pty = null, array $env = null, int $width = 80, int $height = 25, int $width_height_type = SSH2_TERM_UNIT_CHARS)
{
error_clear_last();
if ($width_height_type !== SSH2_TERM_UNIT_CHARS) {
$result = \ssh2_exec($session, $command, $pty, $env, $width, $height, $width_height_type);
} elseif ($height !== 25) {
$result = \ssh2_exec($session, $command, $pty, $env, $width, $height);
} elseif ($width !== 80) {
$result = \ssh2_exec($session, $command, $pty, $env, $width);
} elseif ($env !== null) {
$result = \ssh2_exec($session, $command, $pty, $env);
} elseif ($pty !== null) {
$result = \ssh2_exec($session, $command, $pty);
} else {
$result = \ssh2_exec($session, $command);
}
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
return $result;
}
/**
*
*
* @param resource $pkey Publickey Subsystem resource created by ssh2_publickey_init.
* @param string $algoname Publickey algorithm (e.g.): ssh-dss, ssh-rsa
* @param string $blob Publickey blob as raw binary data
* @param bool $overwrite If the specified key already exists, should it be overwritten?
* @param array $attributes Associative array of attributes to assign to this public key.
* Refer to ietf-secsh-publickey-subsystem for a list of supported attributes.
* To mark an attribute as mandatory, precede its name with an asterisk.
* If the server is unable to support an attribute marked mandatory,
* it will abort the add process.
* @throws Ssh2Exception
*
*/
function ssh2_publickey_add($pkey, string $algoname, string $blob, bool $overwrite = false, array $attributes = null): void
{
error_clear_last();
if ($attributes !== null) {
$result = \ssh2_publickey_add($pkey, $algoname, $blob, $overwrite, $attributes);
} else {
$result = \ssh2_publickey_add($pkey, $algoname, $blob, $overwrite);
}
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Request the Publickey subsystem from an already connected SSH2 server.
*
* The publickey subsystem allows an already connected and authenticated
* client to manage the list of authorized public keys stored on the
* target server in an implementation agnostic manner.
* If the remote server does not support the publickey subsystem,
* the ssh2_publickey_init function will return FALSE.
*
* @param resource $session
* @return resource Returns an SSH2 Publickey Subsystem resource for use
* with all other ssh2_publickey_*() methods.
* @throws Ssh2Exception
*
*/
function ssh2_publickey_init($session)
{
error_clear_last();
$result = \ssh2_publickey_init($session);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
return $result;
}
/**
* Removes an authorized publickey.
*
* @param resource $pkey Publickey Subsystem Resource
* @param string $algoname Publickey algorithm (e.g.): ssh-dss, ssh-rsa
* @param string $blob Publickey blob as raw binary data
* @throws Ssh2Exception
*
*/
function ssh2_publickey_remove($pkey, string $algoname, string $blob): void
{
error_clear_last();
$result = \ssh2_publickey_remove($pkey, $algoname, $blob);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Copy a file from the remote server to the local filesystem using the SCP protocol.
*
* @param resource $session An SSH connection link identifier, obtained from a call to
* ssh2_connect.
* @param string $remote_file Path to the remote file.
* @param string $local_file Path to the local file.
* @throws Ssh2Exception
*
*/
function ssh2_scp_recv($session, string $remote_file, string $local_file): void
{
error_clear_last();
$result = \ssh2_scp_recv($session, $remote_file, $local_file);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Copy a file from the local filesystem to the remote server using the SCP protocol.
*
* @param resource $session An SSH connection link identifier, obtained from a call to
* ssh2_connect.
* @param string $local_file Path to the local file.
* @param string $remote_file Path to the remote file.
* @param int $create_mode The file will be created with the mode specified by
* create_mode.
* @throws Ssh2Exception
*
*/
function ssh2_scp_send($session, string $local_file, string $remote_file, int $create_mode = 0644): void
{
error_clear_last();
$result = \ssh2_scp_send($session, $local_file, $remote_file, $create_mode);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Attempts to change the mode of the specified file to that given in
* mode.
*
* @param resource $sftp An SSH2 SFTP resource opened by ssh2_sftp.
* @param string $filename Path to the file.
* @param int $mode Permissions on the file. See the chmod for more details on this parameter.
* @throws Ssh2Exception
*
*/
function ssh2_sftp_chmod($sftp, string $filename, int $mode): void
{
error_clear_last();
$result = \ssh2_sftp_chmod($sftp, $filename, $mode);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Creates a directory on the remote file server with permissions set to
* mode.
*
* This function is similar to using mkdir with the
* ssh2.sftp:// wrapper.
*
* @param resource $sftp An SSH2 SFTP resource opened by ssh2_sftp.
* @param string $dirname Path of the new directory.
* @param int $mode Permissions on the new directory.
* @param bool $recursive If recursive is TRUE any parent directories
* required for dirname will be automatically created as well.
* @throws Ssh2Exception
*
*/
function ssh2_sftp_mkdir($sftp, string $dirname, int $mode = 0777, bool $recursive = false): void
{
error_clear_last();
$result = \ssh2_sftp_mkdir($sftp, $dirname, $mode, $recursive);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Renames a file on the remote filesystem.
*
* @param resource $sftp An SSH2 SFTP resource opened by ssh2_sftp.
* @param string $from The current file that is being renamed.
* @param string $to The new file name that replaces from.
* @throws Ssh2Exception
*
*/
function ssh2_sftp_rename($sftp, string $from, string $to): void
{
error_clear_last();
$result = \ssh2_sftp_rename($sftp, $from, $to);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Removes a directory from the remote file server.
*
* This function is similar to using rmdir with the
* ssh2.sftp:// wrapper.
*
* @param resource $sftp An SSH2 SFTP resource opened by ssh2_sftp.
* @param string $dirname
* @throws Ssh2Exception
*
*/
function ssh2_sftp_rmdir($sftp, string $dirname): void
{
error_clear_last();
$result = \ssh2_sftp_rmdir($sftp, $dirname);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Creates a symbolic link named link on the remote
* filesystem pointing to target.
*
* @param resource $sftp An SSH2 SFTP resource opened by ssh2_sftp.
* @param string $target Target of the symbolic link.
* @param string $link
* @throws Ssh2Exception
*
*/
function ssh2_sftp_symlink($sftp, string $target, string $link): void
{
error_clear_last();
$result = \ssh2_sftp_symlink($sftp, $target, $link);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Deletes a file on the remote filesystem.
*
* @param resource $sftp An SSH2 SFTP resource opened by ssh2_sftp.
* @param string $filename
* @throws Ssh2Exception
*
*/
function ssh2_sftp_unlink($sftp, string $filename): void
{
error_clear_last();
$result = \ssh2_sftp_unlink($sftp, $filename);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
}
/**
* Request the SFTP subsystem from an already connected SSH2 server.
*
* @param resource $session An SSH connection link identifier, obtained from a call to
* ssh2_connect.
* @return resource This method returns an SSH2 SFTP resource for use with
* all other ssh2_sftp_*() methods and the
* ssh2.sftp:// fopen wrapper.
* @throws Ssh2Exception
*
*/
function ssh2_sftp($session)
{
error_clear_last();
$result = \ssh2_sftp($session);
if ($result === false) {
throw Ssh2Exception::createFromPhpError();
}
return $result;
}