request_filesystem_credentials

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Summery Summery

Displays a form to the user to request for their FTP/SSH details in order to connect to the filesystem.

Syntax Syntax

request_filesystem_credentials( string $form_post, string $type = '', bool|WP_Error $error = false, string $context = '', array $extra_fields = null, bool $allow_relaxed_file_ownership = false )

Description Description

All chosen/entered details are saved, excluding the password.

Hostnames may be in the form of hostname:portnumber (eg: wordpress.org:2467) to specify an alternate FTP/SSH port.

Plugins may override this form by returning true|false via the ‘request_filesystem_credentials’ filter.

Parameters Parameters

$form_post

(string) (Required) The URL to post the form to.

$type

(string) (Optional) Chosen type of filesystem.

Default value: ''

$error

(bool|WP_Error) (Optional) Whether the current request has failed to connect, or an error object.

Default value: false

$context

(string) (Optional) Full path to the directory that is tested for being writable.

Default value: ''

$extra_fields

(array) (Optional) Extra POST fields to be checked for inclusion in the post.

Default value: null

$allow_relaxed_file_ownership

(bool) (Optional) Whether to allow Group/World writable.

Default value: false

Return Return

(bool|array) True if no filesystem credentials are required, false if they are required but have not been provided, array of credentials if they are required and have been provided.

Source Source

File: wp-admin/includes/file.php

function request_filesystem_credentials( $form_post, $type = '', $error = false, $context = '', $extra_fields = null, $allow_relaxed_file_ownership = false ) {
	global $pagenow;

	/**
	 * Filters the filesystem credentials.
	 *
	 * Returning anything other than an empty string will effectively short-circuit
	 * output of the filesystem credentials form, returning that value instead.
	 *
	 * A filter should return true if no filesystem credentials are required, false if they are required but have not been
	 * provided, or an array of credentials if they are required and have been provided.
	 *
	 * @since 2.5.0
	 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string.
	 *
	 * @param mixed         $credentials                  Credentials to return instead. Default empty string.
	 * @param string        $form_post                    The URL to post the form to.
	 * @param string        $type                         Chosen type of filesystem.
	 * @param bool|WP_Error $error                        Whether the current request has failed to connect,
	 *                                                    or an error object.
	 * @param string        $context                      Full path to the directory that is tested for
	 *                                                    being writable.
	 * @param array         $extra_fields                 Extra POST fields.
	 * @param bool          $allow_relaxed_file_ownership Whether to allow Group/World writable.
	 */
	$req_cred = apply_filters( 'request_filesystem_credentials', '', $form_post, $type, $error, $context, $extra_fields, $allow_relaxed_file_ownership );
	if ( '' !== $req_cred ) {
		return $req_cred;
	}

	if ( empty( $type ) ) {
		$type = get_filesystem_method( array(), $context, $allow_relaxed_file_ownership );
	}

	if ( 'direct' === $type ) {
		return true;
	}

	if ( is_null( $extra_fields ) ) {
		$extra_fields = array( 'version', 'locale' );
	}

	$credentials = get_option(
		'ftp_credentials',
		array(
			'hostname' => '',
			'username' => '',
		)
	);

	$submitted_form = wp_unslash( $_POST );

	// Verify nonce, or unset submitted form field values on failure.
	if ( ! isset( $_POST['_fs_nonce'] ) || ! wp_verify_nonce( $_POST['_fs_nonce'], 'filesystem-credentials' ) ) {
		unset(
			$submitted_form['hostname'],
			$submitted_form['username'],
			$submitted_form['password'],
			$submitted_form['public_key'],
			$submitted_form['private_key'],
			$submitted_form['connection_type']
		);
	}

	// If defined, set it to that. Else, if POST'd, set it to that. If not, set it to whatever it previously was (saved details in option).
	$credentials['hostname'] = defined( 'FTP_HOST' ) ? FTP_HOST : ( ! empty( $submitted_form['hostname'] ) ? $submitted_form['hostname'] : $credentials['hostname'] );
	$credentials['username'] = defined( 'FTP_USER' ) ? FTP_USER : ( ! empty( $submitted_form['username'] ) ? $submitted_form['username'] : $credentials['username'] );
	$credentials['password'] = defined( 'FTP_PASS' ) ? FTP_PASS : ( ! empty( $submitted_form['password'] ) ? $submitted_form['password'] : '' );

	// Check to see if we are setting the public/private keys for ssh.
	$credentials['public_key']  = defined( 'FTP_PUBKEY' ) ? FTP_PUBKEY : ( ! empty( $submitted_form['public_key'] ) ? $submitted_form['public_key'] : '' );
	$credentials['private_key'] = defined( 'FTP_PRIKEY' ) ? FTP_PRIKEY : ( ! empty( $submitted_form['private_key'] ) ? $submitted_form['private_key'] : '' );

	// Sanitize the hostname, some people might pass in odd data.
	$credentials['hostname'] = preg_replace( '|\w+://|', '', $credentials['hostname'] ); // Strip any schemes off.

	if ( strpos( $credentials['hostname'], ':' ) ) {
		list( $credentials['hostname'], $credentials['port'] ) = explode( ':', $credentials['hostname'], 2 );
		if ( ! is_numeric( $credentials['port'] ) ) {
			unset( $credentials['port'] );
		}
	} else {
		unset( $credentials['port'] );
	}

	if ( ( defined( 'FTP_SSH' ) && FTP_SSH ) || ( defined( 'FS_METHOD' ) && 'ssh2' === FS_METHOD ) ) {
		$credentials['connection_type'] = 'ssh';
	} elseif ( ( defined( 'FTP_SSL' ) && FTP_SSL ) && 'ftpext' === $type ) { // Only the FTP Extension understands SSL.
		$credentials['connection_type'] = 'ftps';
	} elseif ( ! empty( $submitted_form['connection_type'] ) ) {
		$credentials['connection_type'] = $submitted_form['connection_type'];
	} elseif ( ! isset( $credentials['connection_type'] ) ) { // All else fails (and it's not defaulted to something else saved), default to FTP.
		$credentials['connection_type'] = 'ftp';
	}
	if ( ! $error
		&& ( ( ! empty( $credentials['password'] ) && ! empty( $credentials['username'] ) && ! empty( $credentials['hostname'] ) )
			|| ( 'ssh' === $credentials['connection_type'] && ! empty( $credentials['public_key'] ) && ! empty( $credentials['private_key'] ) )
		)
	) {
		$stored_credentials = $credentials;

		if ( ! empty( $stored_credentials['port'] ) ) { // Save port as part of hostname to simplify above code.
			$stored_credentials['hostname'] .= ':' . $stored_credentials['port'];
		}

		unset( $stored_credentials['password'], $stored_credentials['port'], $stored_credentials['private_key'], $stored_credentials['public_key'] );

		if ( ! wp_installing() ) {
			update_option( 'ftp_credentials', $stored_credentials );
		}

		return $credentials;
	}
	$hostname        = isset( $credentials['hostname'] ) ? $credentials['hostname'] : '';
	$username        = isset( $credentials['username'] ) ? $credentials['username'] : '';
	$public_key      = isset( $credentials['public_key'] ) ? $credentials['public_key'] : '';
	$private_key     = isset( $credentials['private_key'] ) ? $credentials['private_key'] : '';
	$port            = isset( $credentials['port'] ) ? $credentials['port'] : '';
	$connection_type = isset( $credentials['connection_type'] ) ? $credentials['connection_type'] : '';

	if ( $error ) {
		$error_string = __( '<strong>Error</strong>: Could not connect to the server. Please verify the settings are correct.' );
		if ( is_wp_error( $error ) ) {
			$error_string = esc_html( $error->get_error_message() );
		}
		echo '<div id="message" class="error"><p>' . $error_string . '</p></div>';
	}

	$types = array();
	if ( extension_loaded( 'ftp' ) || extension_loaded( 'sockets' ) || function_exists( 'fsockopen' ) ) {
		$types['ftp'] = __( 'FTP' );
	}
	if ( extension_loaded( 'ftp' ) ) { // Only this supports FTPS.
		$types['ftps'] = __( 'FTPS (SSL)' );
	}
	if ( extension_loaded( 'ssh2' ) ) {
		$types['ssh'] = __( 'SSH2' );
	}

	/**
	 * Filters the connection types to output to the filesystem credentials form.
	 *
	 * @since 2.9.0
	 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string.
	 *
	 * @param string[]      $types       Types of connections.
	 * @param array         $credentials Credentials to connect with.
	 * @param string        $type        Chosen filesystem method.
	 * @param bool|WP_Error $error       Whether the current request has failed to connect,
	 *                                   or an error object.
	 * @param string        $context     Full path to the directory that is tested for being writable.
	 */
	$types = apply_filters( 'fs_ftp_connection_types', $types, $credentials, $type, $error, $context );

	?>
<form action="<?php echo esc_url( $form_post ); ?>" method="post">
<div id="request-filesystem-credentials-form" class="request-filesystem-credentials-form">
	<?php
	// Print a H1 heading in the FTP credentials modal dialog, default is a H2.
	$heading_tag = 'h2';
	if ( 'plugins.php' === $pagenow || 'plugin-install.php' === $pagenow ) {
		$heading_tag = 'h1';
	}
	echo "<$heading_tag id='request-filesystem-credentials-title'>" . __( 'Connection Information' ) . "</$heading_tag>";
	?>
<p id="request-filesystem-credentials-desc">
	<?php
	$label_user = __( 'Username' );
	$label_pass = __( 'Password' );
	_e( 'To perform the requested action, WordPress needs to access your web server.' );
	echo ' ';
	if ( ( isset( $types['ftp'] ) || isset( $types['ftps'] ) ) ) {
		if ( isset( $types['ssh'] ) ) {
			_e( 'Please enter your FTP or SSH credentials to proceed.' );
			$label_user = __( 'FTP/SSH Username' );
			$label_pass = __( 'FTP/SSH Password' );
		} else {
			_e( 'Please enter your FTP credentials to proceed.' );
			$label_user = __( 'FTP Username' );
			$label_pass = __( 'FTP Password' );
		}
		echo ' ';
	}
	_e( 'If you do not remember your credentials, you should contact your web host.' );

	$hostname_value = esc_attr( $hostname );
	if ( ! empty( $port ) ) {
		$hostname_value .= ":$port";
	}

	$password_value = '';
	if ( defined( 'FTP_PASS' ) ) {
		$password_value = '*****';
	}
	?>
</p>
<label for="hostname">
	<span class="field-title"><?php _e( 'Hostname' ); ?></span>
	<input name="hostname" type="text" id="hostname" aria-describedby="request-filesystem-credentials-desc" class="code" placeholder="<?php esc_attr_e( 'example: www.wordpress.org' ); ?>" value="<?php echo $hostname_value; ?>"<?php disabled( defined( 'FTP_HOST' ) ); ?> />
</label>
<div class="ftp-username">
	<label for="username">
		<span class="field-title"><?php echo $label_user; ?></span>
		<input name="username" type="text" id="username" value="<?php echo esc_attr( $username ); ?>"<?php disabled( defined( 'FTP_USER' ) ); ?> />
	</label>
</div>
<div class="ftp-password">
	<label for="password">
		<span class="field-title"><?php echo $label_pass; ?></span>
		<input name="password" type="password" id="password" value="<?php echo $password_value; ?>"<?php disabled( defined( 'FTP_PASS' ) ); ?> />
		<em>
		<?php
		if ( ! defined( 'FTP_PASS' ) ) {
			_e( 'This password will not be stored on the server.' );}
		?>
</em>
	</label>
</div>
<fieldset>
<legend><?php _e( 'Connection Type' ); ?></legend>
	<?php
	$disabled = disabled( ( defined( 'FTP_SSL' ) && FTP_SSL ) || ( defined( 'FTP_SSH' ) && FTP_SSH ), true, false );
	foreach ( $types as $name => $text ) :
		?>
	<label for="<?php echo esc_attr( $name ); ?>">
		<input type="radio" name="connection_type" id="<?php echo esc_attr( $name ); ?>" value="<?php echo esc_attr( $name ); ?>" <?php checked( $name, $connection_type ); ?> <?php echo $disabled; ?> />
		<?php echo $text; ?>
	</label>
		<?php
	endforeach;
	?>
</fieldset>
	<?php
	if ( isset( $types['ssh'] ) ) {
		$hidden_class = '';
		if ( 'ssh' !== $connection_type || empty( $connection_type ) ) {
			$hidden_class = ' class="hidden"';
		}
		?>
<fieldset id="ssh-keys"<?php echo $hidden_class; ?>>
<legend><?php _e( 'Authentication Keys' ); ?></legend>
<label for="public_key">
	<span class="field-title"><?php _e( 'Public Key:' ); ?></span>
	<input name="public_key" type="text" id="public_key" aria-describedby="auth-keys-desc" value="<?php echo esc_attr( $public_key ); ?>"<?php disabled( defined( 'FTP_PUBKEY' ) ); ?> />
</label>
<label for="private_key">
	<span class="field-title"><?php _e( 'Private Key:' ); ?></span>
	<input name="private_key" type="text" id="private_key" value="<?php echo esc_attr( $private_key ); ?>"<?php disabled( defined( 'FTP_PRIKEY' ) ); ?> />
</label>
<p id="auth-keys-desc"><?php _e( 'Enter the location on the server where the public and private keys are located. If a passphrase is needed, enter that in the password field above.' ); ?></p>
</fieldset>
		<?php
	}

	foreach ( (array) $extra_fields as $field ) {
		if ( isset( $submitted_form[ $field ] ) ) {
			echo '<input type="hidden" name="' . esc_attr( $field ) . '" value="' . esc_attr( $submitted_form[ $field ] ) . '" />';
		}
	}
	?>
	<p class="request-filesystem-credentials-action-buttons">
		<?php wp_nonce_field( 'filesystem-credentials', '_fs_nonce', false, true ); ?>
		<button class="button cancel-button" data-js-action="close" type="button"><?php _e( 'Cancel' ); ?></button>
		<?php submit_button( __( 'Proceed' ), '', 'upgrade', false ); ?>
	</p>
</div>
</form>
	<?php
	return false;
}

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Changelog Changelog

Changelog
Version Description
4.6.0 The $context parameter default changed from false to an empty string.
2.5.0 Introduced.

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