wp/wp-admin/includes/class-wp-filesystem-ssh2.php
changeset 9 177826044cd9
parent 7 cf61fcea0001
child 16 a86126ab1dd4
equal deleted inserted replaced
8:c7c34916027a 9:177826044cd9
    34  * @subpackage Filesystem
    34  * @subpackage Filesystem
    35  */
    35  */
    36 class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
    36 class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
    37 
    37 
    38 	/**
    38 	/**
       
    39 	 * @since 2.7.0
       
    40 	 * @var resource
    39 	 */
    41 	 */
    40 	public $link = false;
    42 	public $link = false;
    41 
    43 
    42 	/**
    44 	/**
       
    45 	 * @since 2.7.0
    43 	 * @var resource
    46 	 * @var resource
    44 	 */
    47 	 */
    45 	public $sftp_link;
    48 	public $sftp_link;
       
    49 
       
    50 	/**
       
    51 	 * @since 2.7.0
       
    52 	 * @var bool
       
    53 	 */
    46 	public $keys = false;
    54 	public $keys = false;
    47 
    55 
    48 	/**
    56 	/**
       
    57 	 * Constructor.
       
    58 	 *
       
    59 	 * @since 2.7.0
    49 	 *
    60 	 *
    50 	 * @param array $opt
    61 	 * @param array $opt
    51 	 */
    62 	 */
    52 	public function __construct( $opt = '' ) {
    63 	public function __construct( $opt = '' ) {
    53 		$this->method = 'ssh2';
    64 		$this->method = 'ssh2';
    54 		$this->errors = new WP_Error();
    65 		$this->errors = new WP_Error();
    55 
    66 
    56 		//Check if possible to use ssh2 functions.
    67 		//Check if possible to use ssh2 functions.
    57 		if ( ! extension_loaded('ssh2') ) {
    68 		if ( ! extension_loaded( 'ssh2' ) ) {
    58 			$this->errors->add('no_ssh2_ext', __('The ssh2 PHP extension is not available'));
    69 			$this->errors->add( 'no_ssh2_ext', __( 'The ssh2 PHP extension is not available' ) );
    59 			return;
    70 			return;
    60 		}
    71 		}
    61 		if ( !function_exists('stream_get_contents') ) {
    72 		if ( ! function_exists( 'stream_get_contents' ) ) {
    62 			$this->errors->add(
    73 			$this->errors->add(
    63 				'ssh2_php_requirement',
    74 				'ssh2_php_requirement',
    64 				sprintf(
    75 				sprintf(
    65 					/* translators: %s: stream_get_contents() */
    76 					/* translators: %s: stream_get_contents() */
    66 					__( 'The ssh2 PHP extension is available, however, we require the PHP5 function %s' ),
    77 					__( 'The ssh2 PHP extension is available, however, we require the PHP5 function %s' ),
    69 			);
    80 			);
    70 			return;
    81 			return;
    71 		}
    82 		}
    72 
    83 
    73 		// Set defaults:
    84 		// Set defaults:
    74 		if ( empty($opt['port']) )
    85 		if ( empty( $opt['port'] ) ) {
    75 			$this->options['port'] = 22;
    86 			$this->options['port'] = 22;
    76 		else
    87 		} else {
    77 			$this->options['port'] = $opt['port'];
    88 			$this->options['port'] = $opt['port'];
    78 
    89 		}
    79 		if ( empty($opt['hostname']) )
    90 
    80 			$this->errors->add('empty_hostname', __('SSH2 hostname is required'));
    91 		if ( empty( $opt['hostname'] ) ) {
    81 		else
    92 			$this->errors->add( 'empty_hostname', __( 'SSH2 hostname is required' ) );
       
    93 		} else {
    82 			$this->options['hostname'] = $opt['hostname'];
    94 			$this->options['hostname'] = $opt['hostname'];
       
    95 		}
    83 
    96 
    84 		// Check if the options provided are OK.
    97 		// Check if the options provided are OK.
    85 		if ( !empty ($opt['public_key']) && !empty ($opt['private_key']) ) {
    98 		if ( ! empty( $opt['public_key'] ) && ! empty( $opt['private_key'] ) ) {
    86 			$this->options['public_key'] = $opt['public_key'];
    99 			$this->options['public_key']  = $opt['public_key'];
    87 			$this->options['private_key'] = $opt['private_key'];
   100 			$this->options['private_key'] = $opt['private_key'];
    88 
   101 
    89 			$this->options['hostkey'] = array('hostkey' => 'ssh-rsa');
   102 			$this->options['hostkey'] = array( 'hostkey' => 'ssh-rsa' );
    90 
   103 
    91 			$this->keys = true;
   104 			$this->keys = true;
    92 		} elseif ( empty ($opt['username']) ) {
   105 		} elseif ( empty( $opt['username'] ) ) {
    93 			$this->errors->add('empty_username', __('SSH2 username is required'));
   106 			$this->errors->add( 'empty_username', __( 'SSH2 username is required' ) );
    94 		}
   107 		}
    95 
   108 
    96 		if ( !empty($opt['username']) )
   109 		if ( ! empty( $opt['username'] ) ) {
    97 			$this->options['username'] = $opt['username'];
   110 			$this->options['username'] = $opt['username'];
    98 
   111 		}
    99 		if ( empty ($opt['password']) ) {
   112 
       
   113 		if ( empty( $opt['password'] ) ) {
   100 			// Password can be blank if we are using keys.
   114 			// Password can be blank if we are using keys.
   101 			if ( !$this->keys )
   115 			if ( ! $this->keys ) {
   102 				$this->errors->add('empty_password', __('SSH2 password is required'));
   116 				$this->errors->add( 'empty_password', __( 'SSH2 password is required' ) );
       
   117 			}
   103 		} else {
   118 		} else {
   104 			$this->options['password'] = $opt['password'];
   119 			$this->options['password'] = $opt['password'];
   105 		}
   120 		}
   106 	}
   121 	}
   107 
   122 
   108 	/**
   123 	/**
   109 	 *
   124 	 * Connects filesystem.
   110 	 * @return bool
   125 	 *
       
   126 	 * @since 2.7.0
       
   127 	 *
       
   128 	 * @return bool True on success, false on failure.
   111 	 */
   129 	 */
   112 	public function connect() {
   130 	public function connect() {
   113 		if ( ! $this->keys ) {
   131 		if ( ! $this->keys ) {
   114 			$this->link = @ssh2_connect($this->options['hostname'], $this->options['port']);
   132 			$this->link = @ssh2_connect( $this->options['hostname'], $this->options['port'] );
   115 		} else {
   133 		} else {
   116 			$this->link = @ssh2_connect($this->options['hostname'], $this->options['port'], $this->options['hostkey']);
   134 			$this->link = @ssh2_connect( $this->options['hostname'], $this->options['port'], $this->options['hostkey'] );
   117 		}
   135 		}
   118 
   136 
   119 		if ( ! $this->link ) {
   137 		if ( ! $this->link ) {
   120 			$this->errors->add( 'connect',
   138 			$this->errors->add(
       
   139 				'connect',
   121 				/* translators: %s: hostname:port */
   140 				/* translators: %s: hostname:port */
   122 				sprintf( __( 'Failed to connect to SSH2 Server %s' ),
   141 				sprintf(
       
   142 					__( 'Failed to connect to SSH2 Server %s' ),
   123 					$this->options['hostname'] . ':' . $this->options['port']
   143 					$this->options['hostname'] . ':' . $this->options['port']
   124 				)
   144 				)
   125 			);
   145 			);
   126 			return false;
   146 			return false;
   127 		}
   147 		}
   128 
   148 
   129 		if ( !$this->keys ) {
   149 		if ( ! $this->keys ) {
   130 			if ( ! @ssh2_auth_password($this->link, $this->options['username'], $this->options['password']) ) {
   150 			if ( ! @ssh2_auth_password( $this->link, $this->options['username'], $this->options['password'] ) ) {
   131 				$this->errors->add( 'auth',
   151 				$this->errors->add(
       
   152 					'auth',
   132 					/* translators: %s: username */
   153 					/* translators: %s: username */
   133 					sprintf( __( 'Username/Password incorrect for %s' ),
   154 					sprintf(
       
   155 						__( 'Username/Password incorrect for %s' ),
   134 						$this->options['username']
   156 						$this->options['username']
   135 					)
   157 					)
   136 				);
   158 				);
   137 				return false;
   159 				return false;
   138 			}
   160 			}
   139 		} else {
   161 		} else {
   140 			if ( ! @ssh2_auth_pubkey_file($this->link, $this->options['username'], $this->options['public_key'], $this->options['private_key'], $this->options['password'] ) ) {
   162 			if ( ! @ssh2_auth_pubkey_file( $this->link, $this->options['username'], $this->options['public_key'], $this->options['private_key'], $this->options['password'] ) ) {
   141 				$this->errors->add( 'auth',
   163 				$this->errors->add(
       
   164 					'auth',
   142 					/* translators: %s: username */
   165 					/* translators: %s: username */
   143 					sprintf( __( 'Public and Private keys incorrect for %s' ),
   166 					sprintf(
       
   167 						__( 'Public and Private keys incorrect for %s' ),
   144 						$this->options['username']
   168 						$this->options['username']
   145 					)
   169 					)
   146 				);
   170 				);
   147 				return false;
   171 				return false;
   148 			}
   172 			}
   149 		}
   173 		}
   150 
   174 
   151 		$this->sftp_link = ssh2_sftp( $this->link );
   175 		$this->sftp_link = ssh2_sftp( $this->link );
   152 		if ( ! $this->sftp_link ) {
   176 		if ( ! $this->sftp_link ) {
   153 			$this->errors->add( 'connect',
   177 			$this->errors->add(
       
   178 				'connect',
   154 				/* translators: %s: hostname:port */
   179 				/* translators: %s: hostname:port */
   155 				sprintf( __( 'Failed to initialize a SFTP subsystem session with the SSH2 Server %s' ),
   180 				sprintf(
       
   181 					__( 'Failed to initialize a SFTP subsystem session with the SSH2 Server %s' ),
   156 					$this->options['hostname'] . ':' . $this->options['port']
   182 					$this->options['hostname'] . ':' . $this->options['port']
   157 				)
   183 				)
   158 			);
   184 			);
   159 			return false;
   185 			return false;
   160 		}
   186 		}
   168 	 * This method also works around a PHP bug where the root directory (/) cannot
   194 	 * This method also works around a PHP bug where the root directory (/) cannot
   169 	 * be opened by PHP functions, causing a false failure. In order to work around
   195 	 * be opened by PHP functions, causing a false failure. In order to work around
   170 	 * this, the path is converted to /./ which is semantically the same as /
   196 	 * this, the path is converted to /./ which is semantically the same as /
   171 	 * See https://bugs.php.net/bug.php?id=64169 for more details.
   197 	 * See https://bugs.php.net/bug.php?id=64169 for more details.
   172 	 *
   198 	 *
   173 	 *
       
   174 	 * @since 4.4.0
   199 	 * @since 4.4.0
   175 	 *
   200 	 *
   176 	 * @param string $path The File/Directory path on the remote server to return
   201 	 * @param string $path The File/Directory path on the remote server to return
   177 	 * @return string The ssh2.sftp:// wrapped path to use.
   202 	 * @return string The ssh2.sftp:// wrapped path to use.
   178 	 */
   203 	 */
   182 		}
   207 		}
   183 		return 'ssh2.sftp://' . $this->sftp_link . '/' . ltrim( $path, '/' );
   208 		return 'ssh2.sftp://' . $this->sftp_link . '/' . ltrim( $path, '/' );
   184 	}
   209 	}
   185 
   210 
   186 	/**
   211 	/**
       
   212 	 * @since 2.7.0
   187 	 *
   213 	 *
   188 	 * @param string $command
   214 	 * @param string $command
   189 	 * @param bool $returnbool
   215 	 * @param bool $returnbool
   190 	 * @return bool|string True on success, false on failure. String if the command was executed, `$returnbool`
   216 	 * @return bool|string True on success, false on failure. String if the command was executed, `$returnbool`
   191 	 *                     is false (default), and data from the resulting stream was retrieved.
   217 	 *                     is false (default), and data from the resulting stream was retrieved.
   192 	 */
   218 	 */
   193 	public function run_command( $command, $returnbool = false ) {
   219 	public function run_command( $command, $returnbool = false ) {
   194 		if ( ! $this->link )
   220 		if ( ! $this->link ) {
   195 			return false;
   221 			return false;
   196 
   222 		}
   197 		if ( ! ($stream = ssh2_exec($this->link, $command)) ) {
   223 
   198 			$this->errors->add( 'command',
   224 		if ( ! ( $stream = ssh2_exec( $this->link, $command ) ) ) {
       
   225 			$this->errors->add(
       
   226 				'command',
   199 				/* translators: %s: command */
   227 				/* translators: %s: command */
   200 				sprintf( __( 'Unable to perform command: %s'),
   228 				sprintf(
       
   229 					__( 'Unable to perform command: %s' ),
   201 					$command
   230 					$command
   202 				)
   231 				)
   203 			);
   232 			);
   204 		} else {
   233 		} else {
   205 			stream_set_blocking( $stream, true );
   234 			stream_set_blocking( $stream, true );
   206 			stream_set_timeout( $stream, FS_TIMEOUT );
   235 			stream_set_timeout( $stream, FS_TIMEOUT );
   207 			$data = stream_get_contents( $stream );
   236 			$data = stream_get_contents( $stream );
   208 			fclose( $stream );
   237 			fclose( $stream );
   209 
   238 
   210 			if ( $returnbool )
   239 			if ( $returnbool ) {
   211 				return ( $data === false ) ? false : '' != trim($data);
   240 				return ( $data === false ) ? false : '' != trim( $data );
   212 			else
   241 			} else {
   213 				return $data;
   242 				return $data;
       
   243 			}
   214 		}
   244 		}
   215 		return false;
   245 		return false;
   216 	}
   246 	}
   217 
   247 
   218 	/**
   248 	/**
   219 	 *
   249 	 * Reads entire file into a string.
   220 	 * @param string $file
   250 	 *
   221 	 * @return string|false
   251 	 * @since 2.7.0
       
   252 	 *
       
   253 	 * @param string $file Name of the file to read.
       
   254 	 * @return string|false Read data on success, false if no temporary file could be opened,
       
   255 	 *                      or if the file couldn't be retrieved.
   222 	 */
   256 	 */
   223 	public function get_contents( $file ) {
   257 	public function get_contents( $file ) {
   224 		return file_get_contents( $this->sftp_path( $file ) );
   258 		return file_get_contents( $this->sftp_path( $file ) );
   225 	}
   259 	}
   226 
   260 
   227 	/**
   261 	/**
   228 	 *
   262 	 * Reads entire file into an array.
   229 	 * @param string $file
   263 	 *
   230 	 * @return array
   264 	 * @since 2.7.0
   231 	 */
   265 	 *
   232 	public function get_contents_array($file) {
   266 	 * @param string $file Path to the file.
       
   267 	 * @return array|false File contents in an array on success, false on failure.
       
   268 	 */
       
   269 	public function get_contents_array( $file ) {
   233 		return file( $this->sftp_path( $file ) );
   270 		return file( $this->sftp_path( $file ) );
   234 	}
   271 	}
   235 
   272 
   236 	/**
   273 	/**
   237 	 *
   274 	 * Writes a string to a file.
   238 	 * @param string   $file
   275 	 *
   239 	 * @param string   $contents
   276 	 * @since 2.7.0
   240 	 * @param bool|int $mode
   277 	 *
   241 	 * @return bool
   278 	 * @param string    $file     Remote path to the file where to write the data.
   242 	 */
   279 	 * @param string    $contents The data to write.
   243 	public function put_contents($file, $contents, $mode = false ) {
   280 	 * @param int|false $mode     Optional. The file permissions as octal number, usually 0644.
       
   281 	 *                            Default false.
       
   282 	 * @return bool True on success, false on failure.
       
   283 	 */
       
   284 	public function put_contents( $file, $contents, $mode = false ) {
   244 		$ret = file_put_contents( $this->sftp_path( $file ), $contents );
   285 		$ret = file_put_contents( $this->sftp_path( $file ), $contents );
   245 
   286 
   246 		if ( $ret !== strlen( $contents ) )
   287 		if ( $ret !== strlen( $contents ) ) {
   247 			return false;
   288 			return false;
   248 
   289 		}
   249 		$this->chmod($file, $mode);
   290 
       
   291 		$this->chmod( $file, $mode );
   250 
   292 
   251 		return true;
   293 		return true;
   252 	}
   294 	}
   253 
   295 
   254 	/**
   296 	/**
   255 	 *
   297 	 * Gets the current working directory.
   256 	 * @return bool
   298 	 *
       
   299 	 * @since 2.7.0
       
   300 	 *
       
   301 	 * @return string|false The current working directory on success, false on failure.
   257 	 */
   302 	 */
   258 	public function cwd() {
   303 	public function cwd() {
   259 		$cwd = ssh2_sftp_realpath( $this->sftp_link, '.' );
   304 		$cwd = ssh2_sftp_realpath( $this->sftp_link, '.' );
   260 		if ( $cwd ) {
   305 		if ( $cwd ) {
   261 			$cwd = trailingslashit( trim( $cwd ) );
   306 			$cwd = trailingslashit( trim( $cwd ) );
   262 		}
   307 		}
   263 		return $cwd;
   308 		return $cwd;
   264 	}
   309 	}
   265 
   310 
   266 	/**
   311 	/**
   267 	 *
   312 	 * Changes current directory.
   268 	 * @param string $dir
   313 	 *
   269 	 * @return bool|string
   314 	 * @since 2.7.0
   270 	 */
   315 	 *
   271 	public function chdir($dir) {
   316 	 * @param string $dir The new current directory.
   272 		return $this->run_command('cd ' . $dir, true);
   317 	 * @return bool True on success, false on failure.
   273 	}
   318 	 */
   274 
   319 	public function chdir( $dir ) {
   275 	/**
   320 		return $this->run_command( 'cd ' . $dir, true );
   276 	 *
   321 	}
   277 	 * @param string $file
   322 
   278 	 * @param string $group
   323 	/**
   279 	 * @param bool   $recursive
   324 	 * Changes the file group.
   280 	 *
   325 	 *
   281 	 * @return bool
   326 	 * @since 2.7.0
   282 	 */
   327 	 *
   283 	public function chgrp($file, $group, $recursive = false ) {
   328 	 * @param string     $file      Path to the file.
   284 		if ( ! $this->exists($file) )
   329 	 * @param string|int $group     A group name or number.
   285 			return false;
   330 	 * @param bool       $recursive Optional. If set to true, changes file group recursively.
   286 		if ( ! $recursive || ! $this->is_dir($file) )
   331 	 *                              Default false.
   287 			return $this->run_command(sprintf('chgrp %s %s', escapeshellarg($group), escapeshellarg($file)), true);
   332 	 * @return bool True on success, false on failure.
   288 		return $this->run_command(sprintf('chgrp -R %s %s', escapeshellarg($group), escapeshellarg($file)), true);
   333 	 */
   289 	}
   334 	public function chgrp( $file, $group, $recursive = false ) {
   290 
   335 		if ( ! $this->exists( $file ) ) {
   291 	/**
   336 			return false;
   292 	 *
   337 		}
   293 	 * @param string $file
   338 		if ( ! $recursive || ! $this->is_dir( $file ) ) {
   294 	 * @param int    $mode
   339 			return $this->run_command( sprintf( 'chgrp %s %s', escapeshellarg( $group ), escapeshellarg( $file ) ), true );
   295 	 * @param bool   $recursive
   340 		}
   296 	 * @return bool|string
   341 		return $this->run_command( sprintf( 'chgrp -R %s %s', escapeshellarg( $group ), escapeshellarg( $file ) ), true );
   297 	 */
   342 	}
   298 	public function chmod($file, $mode = false, $recursive = false) {
   343 
   299 		if ( ! $this->exists($file) )
   344 	/**
   300 			return false;
   345 	 * Changes filesystem permissions.
       
   346 	 *
       
   347 	 * @since 2.7.0
       
   348 	 *
       
   349 	 * @param string    $file      Path to the file.
       
   350 	 * @param int|false $mode      Optional. The permissions as octal number, usually 0644 for files,
       
   351 	 *                             0755 for directories. Default false.
       
   352 	 * @param bool      $recursive Optional. If set to true, changes file group recursively.
       
   353 	 *                             Default false.
       
   354 	 * @return bool True on success, false on failure.
       
   355 	 */
       
   356 	public function chmod( $file, $mode = false, $recursive = false ) {
       
   357 		if ( ! $this->exists( $file ) ) {
       
   358 			return false;
       
   359 		}
   301 
   360 
   302 		if ( ! $mode ) {
   361 		if ( ! $mode ) {
   303 			if ( $this->is_file($file) )
   362 			if ( $this->is_file( $file ) ) {
   304 				$mode = FS_CHMOD_FILE;
   363 				$mode = FS_CHMOD_FILE;
   305 			elseif ( $this->is_dir($file) )
   364 			} elseif ( $this->is_dir( $file ) ) {
   306 				$mode = FS_CHMOD_DIR;
   365 				$mode = FS_CHMOD_DIR;
   307 			else
   366 			} else {
   308 				return false;
   367 				return false;
   309 		}
   368 			}
   310 
   369 		}
   311 		if ( ! $recursive || ! $this->is_dir($file) )
   370 
   312 			return $this->run_command(sprintf('chmod %o %s', $mode, escapeshellarg($file)), true);
   371 		if ( ! $recursive || ! $this->is_dir( $file ) ) {
   313 		return $this->run_command(sprintf('chmod -R %o %s', $mode, escapeshellarg($file)), true);
   372 			return $this->run_command( sprintf( 'chmod %o %s', $mode, escapeshellarg( $file ) ), true );
   314 	}
   373 		}
   315 
   374 		return $this->run_command( sprintf( 'chmod -R %o %s', $mode, escapeshellarg( $file ) ), true );
   316 	/**
   375 	}
   317 	 * Change the ownership of a file / folder.
   376 
   318 	 *
   377 	/**
   319 	 *
   378 	 * Changes the owner of a file or directory.
   320 	 * @param string     $file      Path to the file.
   379 	 *
       
   380 	 * @since 2.7.0
       
   381 	 *
       
   382 	 * @param string     $file      Path to the file or directory.
   321 	 * @param string|int $owner     A user name or number.
   383 	 * @param string|int $owner     A user name or number.
   322 	 * @param bool       $recursive Optional. If set True changes file owner recursivly. Default False.
   384 	 * @param bool       $recursive Optional. If set to true, changes file owner recursively.
   323 	 * @return bool True on success or false on failure.
   385 	 *                              Default false.
       
   386 	 * @return bool True on success, false on failure.
   324 	 */
   387 	 */
   325 	public function chown( $file, $owner, $recursive = false ) {
   388 	public function chown( $file, $owner, $recursive = false ) {
   326 		if ( ! $this->exists($file) )
   389 		if ( ! $this->exists( $file ) ) {
   327 			return false;
   390 			return false;
   328 		if ( ! $recursive || ! $this->is_dir($file) )
   391 		}
   329 			return $this->run_command(sprintf('chown %s %s', escapeshellarg($owner), escapeshellarg($file)), true);
   392 		if ( ! $recursive || ! $this->is_dir( $file ) ) {
   330 		return $this->run_command(sprintf('chown -R %s %s', escapeshellarg($owner), escapeshellarg($file)), true);
   393 			return $this->run_command( sprintf( 'chown %s %s', escapeshellarg( $owner ), escapeshellarg( $file ) ), true );
   331 	}
   394 		}
   332 
   395 		return $this->run_command( sprintf( 'chown -R %s %s', escapeshellarg( $owner ), escapeshellarg( $file ) ), true );
   333 	/**
   396 	}
   334 	 *
   397 
   335 	 * @param string $file
   398 	/**
   336 	 * @return string|false
   399 	 * Gets the file owner.
   337 	 */
   400 	 *
   338 	public function owner($file) {
   401 	 * @since 2.7.0
       
   402 	 *
       
   403 	 * @param string $file Path to the file.
       
   404 	 * @return string|false Username of the owner on success, false on failure.
       
   405 	 */
       
   406 	public function owner( $file ) {
   339 		$owneruid = @fileowner( $this->sftp_path( $file ) );
   407 		$owneruid = @fileowner( $this->sftp_path( $file ) );
   340 		if ( ! $owneruid )
   408 		if ( ! $owneruid ) {
   341 			return false;
   409 			return false;
   342 		if ( ! function_exists('posix_getpwuid') )
   410 		}
       
   411 		if ( ! function_exists( 'posix_getpwuid' ) ) {
   343 			return $owneruid;
   412 			return $owneruid;
   344 		$ownerarray = posix_getpwuid($owneruid);
   413 		}
       
   414 		$ownerarray = posix_getpwuid( $owneruid );
   345 		return $ownerarray['name'];
   415 		return $ownerarray['name'];
   346 	}
   416 	}
   347 
   417 
   348 	/**
   418 	/**
   349 	 *
   419 	 * Gets the permissions of the specified file or filepath in their octal format.
   350 	 * @param string $file
   420 	 *
   351 	 * @return string
   421 	 * @since 2.7.0
   352 	 */
   422 	 *
   353 	public function getchmod($file) {
   423 	 * @param string $file Path to the file.
       
   424 	 * @return string Mode of the file (the last 3 digits).
       
   425 	 */
       
   426 	public function getchmod( $file ) {
   354 		return substr( decoct( @fileperms( $this->sftp_path( $file ) ) ), -3 );
   427 		return substr( decoct( @fileperms( $this->sftp_path( $file ) ) ), -3 );
   355 	}
   428 	}
   356 
   429 
   357 	/**
   430 	/**
   358 	 *
   431 	 * Gets the file's group.
   359 	 * @param string $file
   432 	 *
   360 	 * @return string|false
   433 	 * @since 2.7.0
   361 	 */
   434 	 *
   362 	public function group($file) {
   435 	 * @param string $file Path to the file.
       
   436 	 * @return string|false The group on success, false on failure.
       
   437 	 */
       
   438 	public function group( $file ) {
   363 		$gid = @filegroup( $this->sftp_path( $file ) );
   439 		$gid = @filegroup( $this->sftp_path( $file ) );
   364 		if ( ! $gid )
   440 		if ( ! $gid ) {
   365 			return false;
   441 			return false;
   366 		if ( ! function_exists('posix_getgrgid') )
   442 		}
       
   443 		if ( ! function_exists( 'posix_getgrgid' ) ) {
   367 			return $gid;
   444 			return $gid;
   368 		$grouparray = posix_getgrgid($gid);
   445 		}
       
   446 		$grouparray = posix_getgrgid( $gid );
   369 		return $grouparray['name'];
   447 		return $grouparray['name'];
   370 	}
   448 	}
   371 
   449 
   372 	/**
   450 	/**
   373 	 *
   451 	 * Copies a file.
   374 	 * @param string   $source
   452 	 *
   375 	 * @param string   $destination
   453 	 * @since 2.7.0
   376 	 * @param bool     $overwrite
   454 	 *
   377 	 * @param int|bool $mode
   455 	 * @param string    $source      Path to the source file.
   378 	 * @return bool
   456 	 * @param string    $destination Path to the destination file.
   379 	 */
   457 	 * @param bool      $overwrite   Optional. Whether to overwrite the destination file if it exists.
   380 	public function copy($source, $destination, $overwrite = false, $mode = false) {
   458 	 *                               Default false.
   381 		if ( ! $overwrite && $this->exists($destination) )
   459 	 * @param int|false $mode        Optional. The permissions as octal number, usually 0644 for files,
   382 			return false;
   460 	 *                               0755 for dirs. Default false.
   383 		$content = $this->get_contents($source);
   461 	 * @return bool True on success, false on failure.
   384 		if ( false === $content)
   462 	 */
   385 			return false;
   463 	public function copy( $source, $destination, $overwrite = false, $mode = false ) {
   386 		return $this->put_contents($destination, $content, $mode);
   464 		if ( ! $overwrite && $this->exists( $destination ) ) {
   387 	}
   465 			return false;
   388 
   466 		}
   389 	/**
   467 		$content = $this->get_contents( $source );
   390 	 *
   468 		if ( false === $content ) {
   391 	 * @param string $source
   469 			return false;
   392 	 * @param string $destination
   470 		}
   393 	 * @param bool   $overwrite
   471 		return $this->put_contents( $destination, $content, $mode );
   394 	 * @return bool
   472 	}
   395 	 */
   473 
   396 	public function move($source, $destination, $overwrite = false) {
   474 	/**
       
   475 	 * Moves a file.
       
   476 	 *
       
   477 	 * @since 2.7.0
       
   478 	 *
       
   479 	 * @param string $source      Path to the source file.
       
   480 	 * @param string $destination Path to the destination file.
       
   481 	 * @param bool   $overwrite   Optional. Whether to overwrite the destination file if it exists.
       
   482 	 *                            Default false.
       
   483 	 * @return bool True on success, false on failure.
       
   484 	 */
       
   485 	public function move( $source, $destination, $overwrite = false ) {
   397 		return @ssh2_sftp_rename( $this->sftp_link, $source, $destination );
   486 		return @ssh2_sftp_rename( $this->sftp_link, $source, $destination );
   398 	}
   487 	}
   399 
   488 
   400 	/**
   489 	/**
   401 	 *
   490 	 * Deletes a file or directory.
   402 	 * @param string      $file
   491 	 *
   403 	 * @param bool        $recursive
   492 	 * @since 2.7.0
   404 	 * @param string|bool $type
   493 	 *
   405 	 * @return bool
   494 	 * @param string       $file      Path to the file or directory.
   406 	 */
   495 	 * @param bool         $recursive Optional. If set to true, changes file group recursively.
   407 	public function delete($file, $recursive = false, $type = false) {
   496 	 *                                Default false.
   408 		if ( 'f' == $type || $this->is_file($file) )
   497 	 * @param string|false $type      Type of resource. 'f' for file, 'd' for directory.
   409 			return ssh2_sftp_unlink($this->sftp_link, $file);
   498 	 *                                Default false.
   410 		if ( ! $recursive )
   499 	 * @return bool True on success, false on failure.
   411 			 return ssh2_sftp_rmdir($this->sftp_link, $file);
   500 	 */
   412 		$filelist = $this->dirlist($file);
   501 	public function delete( $file, $recursive = false, $type = false ) {
   413 		if ( is_array($filelist) ) {
   502 		if ( 'f' == $type || $this->is_file( $file ) ) {
   414 			foreach ( $filelist as $filename => $fileinfo) {
   503 			return ssh2_sftp_unlink( $this->sftp_link, $file );
   415 				$this->delete($file . '/' . $filename, $recursive, $fileinfo['type']);
   504 		}
   416 			}
   505 		if ( ! $recursive ) {
   417 		}
   506 			return ssh2_sftp_rmdir( $this->sftp_link, $file );
   418 		return ssh2_sftp_rmdir($this->sftp_link, $file);
   507 		}
   419 	}
   508 		$filelist = $this->dirlist( $file );
   420 
   509 		if ( is_array( $filelist ) ) {
   421 	/**
   510 			foreach ( $filelist as $filename => $fileinfo ) {
   422 	 *
   511 				$this->delete( $file . '/' . $filename, $recursive, $fileinfo['type'] );
   423 	 * @param string $file
   512 			}
   424 	 * @return bool
   513 		}
   425 	 */
   514 		return ssh2_sftp_rmdir( $this->sftp_link, $file );
   426 	public function exists($file) {
   515 	}
       
   516 
       
   517 	/**
       
   518 	 * Checks if a file or directory exists.
       
   519 	 *
       
   520 	 * @since 2.7.0
       
   521 	 *
       
   522 	 * @param string $file Path to file or directory.
       
   523 	 * @return bool Whether $file exists or not.
       
   524 	 */
       
   525 	public function exists( $file ) {
   427 		return file_exists( $this->sftp_path( $file ) );
   526 		return file_exists( $this->sftp_path( $file ) );
   428 	}
   527 	}
   429 
   528 
   430 	/**
   529 	/**
   431 	 *
   530 	 * Checks if resource is a file.
   432 	 * @param string $file
   531 	 *
   433 	 * @return bool
   532 	 * @since 2.7.0
   434 	 */
   533 	 *
   435 	public function is_file($file) {
   534 	 * @param string $file File path.
       
   535 	 * @return bool Whether $file is a file.
       
   536 	 */
       
   537 	public function is_file( $file ) {
   436 		return is_file( $this->sftp_path( $file ) );
   538 		return is_file( $this->sftp_path( $file ) );
   437 	}
   539 	}
   438 
   540 
   439 	/**
   541 	/**
   440 	 *
   542 	 * Checks if resource is a directory.
   441 	 * @param string $path
   543 	 *
   442 	 * @return bool
   544 	 * @since 2.7.0
   443 	 */
   545 	 *
   444 	public function is_dir($path) {
   546 	 * @param string $path Directory path.
       
   547 	 * @return bool Whether $path is a directory.
       
   548 	 */
       
   549 	public function is_dir( $path ) {
   445 		return is_dir( $this->sftp_path( $path ) );
   550 		return is_dir( $this->sftp_path( $path ) );
   446 	}
   551 	}
   447 
   552 
   448 	/**
   553 	/**
   449 	 *
   554 	 * Checks if a file is readable.
   450 	 * @param string $file
   555 	 *
   451 	 * @return bool
   556 	 * @since 2.7.0
   452 	 */
   557 	 *
   453 	public function is_readable($file) {
   558 	 * @param string $file Path to file.
       
   559 	 * @return bool Whether $file is readable.
       
   560 	 */
       
   561 	public function is_readable( $file ) {
   454 		return is_readable( $this->sftp_path( $file ) );
   562 		return is_readable( $this->sftp_path( $file ) );
   455 	}
   563 	}
   456 
   564 
   457 	/**
   565 	/**
   458 	 *
   566 	 * Checks if a file or directory is writable.
   459 	 * @param string $file
   567 	 *
   460 	 * @return bool
   568 	 * @since 2.7.0
   461 	 */
   569 	 *
   462 	public function is_writable($file) {
   570 	 * @param string $file Path to file or directory.
       
   571 	 * @return bool Whether $file is writable.
       
   572 	 */
       
   573 	public function is_writable( $file ) {
   463 		// PHP will base it's writable checks on system_user === file_owner, not ssh_user === file_owner
   574 		// PHP will base it's writable checks on system_user === file_owner, not ssh_user === file_owner
   464 		return true;
   575 		return true;
   465 	}
   576 	}
   466 
   577 
   467 	/**
   578 	/**
   468 	 *
   579 	 * Gets the file's last access time.
   469 	 * @param string $file
   580 	 *
   470 	 * @return int
   581 	 * @since 2.7.0
   471 	 */
   582 	 *
   472 	public function atime($file) {
   583 	 * @param string $file Path to file.
       
   584 	 * @return int|false Unix timestamp representing last access time, false on failure.
       
   585 	 */
       
   586 	public function atime( $file ) {
   473 		return fileatime( $this->sftp_path( $file ) );
   587 		return fileatime( $this->sftp_path( $file ) );
   474 	}
   588 	}
   475 
   589 
   476 	/**
   590 	/**
   477 	 *
   591 	 * Gets the file modification time.
   478 	 * @param string $file
   592 	 *
   479 	 * @return int
   593 	 * @since 2.7.0
   480 	 */
   594 	 *
   481 	public function mtime($file) {
   595 	 * @param string $file Path to file.
       
   596 	 * @return int|false Unix timestamp representing modification time, false on failure.
       
   597 	 */
       
   598 	public function mtime( $file ) {
   482 		return filemtime( $this->sftp_path( $file ) );
   599 		return filemtime( $this->sftp_path( $file ) );
   483 	}
   600 	}
   484 
   601 
   485 	/**
   602 	/**
   486 	 *
   603 	 * Gets the file size (in bytes).
   487 	 * @param string $file
   604 	 *
   488 	 * @return int
   605 	 * @since 2.7.0
   489 	 */
   606 	 *
   490 	public function size($file) {
   607 	 * @param string $file Path to file.
       
   608 	 * @return int|false Size of the file in bytes on success, false on failure.
       
   609 	 */
       
   610 	public function size( $file ) {
   491 		return filesize( $this->sftp_path( $file ) );
   611 		return filesize( $this->sftp_path( $file ) );
   492 	}
   612 	}
   493 
   613 
   494 	/**
   614 	/**
   495 	 *
   615 	 * Sets the access and modification times of a file.
   496 	 * @param string $file
   616 	 *
   497 	 * @param int    $time
   617 	 * Note: Not implemented.
   498 	 * @param int    $atime
   618 	 *
   499 	 */
   619 	 * @since 2.7.0
   500 	public function touch($file, $time = 0, $atime = 0) {
   620 	 *
   501 		//Not implemented.
   621 	 * @param string $file  Path to file.
   502 	}
   622 	 * @param int    $time  Optional. Modified time to set for file.
   503 
   623 	 *                      Default 0.
   504 	/**
   624 	 * @param int    $atime Optional. Access time to set for file.
   505 	 *
   625 	 *                      Default 0.
   506 	 * @param string $path
   626 	 */
   507 	 * @param mixed  $chmod
   627 	public function touch( $file, $time = 0, $atime = 0 ) {
   508 	 * @param mixed  $chown
   628 		// Not implemented.
   509 	 * @param mixed  $chgrp
   629 	}
   510 	 * @return bool
   630 
   511 	 */
   631 	/**
   512 	public function mkdir($path, $chmod = false, $chown = false, $chgrp = false) {
   632 	 * Creates a directory.
   513 		$path = untrailingslashit($path);
   633 	 *
   514 		if ( empty($path) )
   634 	 * @since 2.7.0
   515 			return false;
   635 	 *
   516 
   636 	 * @param string     $path  Path for new directory.
   517 		if ( ! $chmod )
   637 	 * @param int|false  $chmod Optional. The permissions as octal number (or false to skip chmod).
       
   638 	 *                          Default false.
       
   639 	 * @param string|int $chown Optional. A user name or number (or false to skip chown).
       
   640 	 *                          Default false.
       
   641 	 * @param string|int $chgrp Optional. A group name or number (or false to skip chgrp).
       
   642 	 *                          Default false.
       
   643 	 * @return bool True on success, false on failure.
       
   644 	 */
       
   645 	public function mkdir( $path, $chmod = false, $chown = false, $chgrp = false ) {
       
   646 		$path = untrailingslashit( $path );
       
   647 		if ( empty( $path ) ) {
       
   648 			return false;
       
   649 		}
       
   650 
       
   651 		if ( ! $chmod ) {
   518 			$chmod = FS_CHMOD_DIR;
   652 			$chmod = FS_CHMOD_DIR;
   519 		if ( ! ssh2_sftp_mkdir($this->sftp_link, $path, $chmod, true) )
   653 		}
   520 			return false;
   654 		if ( ! ssh2_sftp_mkdir( $this->sftp_link, $path, $chmod, true ) ) {
   521 		if ( $chown )
   655 			return false;
   522 			$this->chown($path, $chown);
   656 		}
   523 		if ( $chgrp )
   657 		if ( $chown ) {
   524 			$this->chgrp($path, $chgrp);
   658 			$this->chown( $path, $chown );
       
   659 		}
       
   660 		if ( $chgrp ) {
       
   661 			$this->chgrp( $path, $chgrp );
       
   662 		}
   525 		return true;
   663 		return true;
   526 	}
   664 	}
   527 
   665 
   528 	/**
   666 	/**
   529 	 *
   667 	 * Deletes a directory.
   530 	 * @param string $path
   668 	 *
   531 	 * @param bool   $recursive
   669 	 * @since 2.7.0
   532 	 * @return bool
   670 	 *
   533 	 */
   671 	 * @param string $path      Path to directory.
   534 	public function rmdir($path, $recursive = false) {
   672 	 * @param bool   $recursive Optional. Whether to recursively remove files/directories.
   535 		return $this->delete($path, $recursive);
   673 	 *                          Default false.
   536 	}
   674 	 * @return bool True on success, false on failure.
   537 
   675 	 */
   538 	/**
   676 	public function rmdir( $path, $recursive = false ) {
   539 	 *
   677 		return $this->delete( $path, $recursive );
   540 	 * @param string $path
   678 	}
   541 	 * @param bool   $include_hidden
   679 
   542 	 * @param bool   $recursive
   680 	/**
   543 	 * @return bool|array
   681 	 * Gets details for files in a directory or a specific file.
   544 	 */
   682 	 *
   545 	public function dirlist($path, $include_hidden = true, $recursive = false) {
   683 	 * @since 2.7.0
   546 		if ( $this->is_file($path) ) {
   684 	 *
   547 			$limit_file = basename($path);
   685 	 * @param string $path           Path to directory or file.
   548 			$path = dirname($path);
   686 	 * @param bool   $include_hidden Optional. Whether to include details of hidden ("." prefixed) files.
       
   687 	 *                               Default true.
       
   688 	 * @param bool   $recursive      Optional. Whether to recursively include file details in nested directories.
       
   689 	 *                               Default false.
       
   690 	 * @return array|false {
       
   691 	 *     Array of files. False if unable to list directory contents.
       
   692 	 *
       
   693 	 *     @type string $name        Name of the file or directory.
       
   694 	 *     @type string $perms       *nix representation of permissions.
       
   695 	 *     @type int    $permsn      Octal representation of permissions.
       
   696 	 *     @type string $owner       Owner name or ID.
       
   697 	 *     @type int    $size        Size of file in bytes.
       
   698 	 *     @type int    $lastmodunix Last modified unix timestamp.
       
   699 	 *     @type mixed  $lastmod     Last modified month (3 letter) and day (without leading 0).
       
   700 	 *     @type int    $time        Last modified time.
       
   701 	 *     @type string $type        Type of resource. 'f' for file, 'd' for directory.
       
   702 	 *     @type mixed  $files       If a directory and $recursive is true, contains another array of files.
       
   703 	 * }
       
   704 	 */
       
   705 	public function dirlist( $path, $include_hidden = true, $recursive = false ) {
       
   706 		if ( $this->is_file( $path ) ) {
       
   707 			$limit_file = basename( $path );
       
   708 			$path       = dirname( $path );
   549 		} else {
   709 		} else {
   550 			$limit_file = false;
   710 			$limit_file = false;
   551 		}
   711 		}
   552 
   712 
   553 		if ( ! $this->is_dir($path) )
   713 		if ( ! $this->is_dir( $path ) ) {
   554 			return false;
   714 			return false;
       
   715 		}
   555 
   716 
   556 		$ret = array();
   717 		$ret = array();
   557 		$dir = @dir( $this->sftp_path( $path ) );
   718 		$dir = @dir( $this->sftp_path( $path ) );
   558 
   719 
   559 		if ( ! $dir )
   720 		if ( ! $dir ) {
   560 			return false;
   721 			return false;
   561 
   722 		}
   562 		while (false !== ($entry = $dir->read()) ) {
   723 
   563 			$struc = array();
   724 		while ( false !== ( $entry = $dir->read() ) ) {
       
   725 			$struc         = array();
   564 			$struc['name'] = $entry;
   726 			$struc['name'] = $entry;
   565 
   727 
   566 			if ( '.' == $struc['name'] || '..' == $struc['name'] )
   728 			if ( '.' == $struc['name'] || '..' == $struc['name'] ) {
   567 				continue; //Do not care about these folders.
   729 				continue; //Do not care about these folders.
   568 
   730 			}
   569 			if ( ! $include_hidden && '.' == $struc['name'][0] )
   731 
       
   732 			if ( ! $include_hidden && '.' == $struc['name'][0] ) {
   570 				continue;
   733 				continue;
   571 
   734 			}
   572 			if ( $limit_file && $struc['name'] != $limit_file )
   735 
       
   736 			if ( $limit_file && $struc['name'] != $limit_file ) {
   573 				continue;
   737 				continue;
   574 
   738 			}
   575 			$struc['perms'] 	= $this->gethchmod($path.'/'.$entry);
   739 
   576 			$struc['permsn']	= $this->getnumchmodfromh($struc['perms']);
   740 			$struc['perms']       = $this->gethchmod( $path . '/' . $entry );
   577 			$struc['number'] 	= false;
   741 			$struc['permsn']      = $this->getnumchmodfromh( $struc['perms'] );
   578 			$struc['owner']    	= $this->owner($path.'/'.$entry);
   742 			$struc['number']      = false;
   579 			$struc['group']    	= $this->group($path.'/'.$entry);
   743 			$struc['owner']       = $this->owner( $path . '/' . $entry );
   580 			$struc['size']    	= $this->size($path.'/'.$entry);
   744 			$struc['group']       = $this->group( $path . '/' . $entry );
   581 			$struc['lastmodunix']= $this->mtime($path.'/'.$entry);
   745 			$struc['size']        = $this->size( $path . '/' . $entry );
   582 			$struc['lastmod']   = date('M j',$struc['lastmodunix']);
   746 			$struc['lastmodunix'] = $this->mtime( $path . '/' . $entry );
   583 			$struc['time']    	= date('h:i:s',$struc['lastmodunix']);
   747 			$struc['lastmod']     = date( 'M j', $struc['lastmodunix'] );
   584 			$struc['type']		= $this->is_dir($path.'/'.$entry) ? 'd' : 'f';
   748 			$struc['time']        = date( 'h:i:s', $struc['lastmodunix'] );
       
   749 			$struc['type']        = $this->is_dir( $path . '/' . $entry ) ? 'd' : 'f';
   585 
   750 
   586 			if ( 'd' == $struc['type'] ) {
   751 			if ( 'd' == $struc['type'] ) {
   587 				if ( $recursive )
   752 				if ( $recursive ) {
   588 					$struc['files'] = $this->dirlist($path . '/' . $struc['name'], $include_hidden, $recursive);
   753 					$struc['files'] = $this->dirlist( $path . '/' . $struc['name'], $include_hidden, $recursive );
   589 				else
   754 				} else {
   590 					$struc['files'] = array();
   755 					$struc['files'] = array();
       
   756 				}
   591 			}
   757 			}
   592 
   758 
   593 			$ret[ $struc['name'] ] = $struc;
   759 			$ret[ $struc['name'] ] = $struc;
   594 		}
   760 		}
   595 		$dir->close();
   761 		$dir->close();
   596 		unset($dir);
   762 		unset( $dir );
   597 		return $ret;
   763 		return $ret;
   598 	}
   764 	}
   599 }
   765 }