86 lines
3.1 KiB
PHP
86 lines
3.1 KiB
PHP
<?php
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/** @noinspection PhpUnhandledExceptionInspection */
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namespace WebAppick\FTP;
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class SFTPConnection {
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private $connection;
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private $sftp;
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public function __construct( $host, $port = 22, $f_print = false ) {
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if ( ! extension_loaded( 'ssh2' ) ) {
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/* translators: 1: server host, 2: server port */
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throw new \Exception( sprintf( esc_html__( 'Could not connect to %1$s:%2$s. SSH2 is not enabled on this server.', 'woo-feed' ), esc_attr($host), esc_attr($port) ) );
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}
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$this->connection = ssh2_connect( $host, $port );
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// Security: Man in the middle attack protection
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if ( $f_print ) {
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$fingerprint = ssh2_fingerprint($this->connection, SSH2_FINGERPRINT_MD5 | SSH2_FINGERPRINT_HEX);
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if ( $fingerprint !== $f_print ) {
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throw new \Exception(sprintf('Known host fingerprint "%s" does not match %s:%s fingerprint "%s". Possible man-in-the-middle attack ?', esc_attr($config['fingerprint']),esc_attr($config['host']), esc_attr($config['port']), esc_attr($fingerprint)));
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}
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}
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}
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public function login( $username, $password ) {
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if ( ! ssh2_auth_password( $this->connection, $username, $password ) ) {
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throw new \Exception( "Could not authenticate with username ".esc_attr($username)." " . "and password ".esc_attr($password)." ." );
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}
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$this->sftp = ssh2_sftp( $this->connection );
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if ( ! $this->sftp ) {
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throw new \Exception( 'Could not initialize SFTP subsystem.' );
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}
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}
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/**
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* @param string $local_file local file to upload
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* @param string $remote_file remote file name
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* @param string $path must use trailing slash. directory path to put the file on remote server.
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*
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* @return bool
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* @throws Exception
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*/
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public function upload_file( $local_file, $remote_file, $path ) {
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if ( ! file_exists( $local_file ) ) {
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throw new \Exception( "Local file does't exists.: ". esc_attr($local_file)."." );
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}
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$data_to_send = file_get_contents( $local_file ); // phpcs:ignore
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if ( false === $data_to_send ) {
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throw new \Exception( "Could not open local file: ".esc_attr($local_file)."." );
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}
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$sftp = $this->sftp;
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if ( ! is_dir( "ssh2.sftp://$sftp$path" ) ) {
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throw new \Exception( "Invalid Remote Path: ".esc_attr($path)."." );
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}
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if ( ! is_writeable( "ssh2.sftp://$sftp$path" ) ) { // phpcs:ignore
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// Not throwing an exception because only upload permission is required.
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error_log( "CTX feed sftp upload issue: Can't write to remote. @" . $path );
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}
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$stream = fopen( "ssh2.sftp://$sftp$path$remote_file", 'w' ); // phpcs:ignore
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if ( ! $stream ) {
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throw new \Exception( "Could not open file: ". esc_attr($path)."." );
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}
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if ( false === fwrite( $stream, $data_to_send ) ) { // phpcs:ignore
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throw new \Exception( "Could not send data from file: ".esc_attr($local_file)."." );
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}
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fclose( $stream ); // phpcs:ignore
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return true;
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}
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public function delete_file( $remote_file ) {
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$sftp = $this->sftp;
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unlink("ssh2.sftp://$sftp$remote_file"); // phpcs:ignore
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}
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}
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