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633 lines
22 KiB
633 lines
22 KiB
<?php
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if (!defined('UPDRAFTPLUS_DIR')) die('No direct access allowed.');
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abstract class UpdraftPlus_BackupModule {
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private $_options;
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private $_instance_id;
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private $_storage;
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/**
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* Store options (within this class) for this remote storage module. There is also a parameter for saving to the permanent storage (i.e. database).
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*
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* @param array $options array of options to store
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* @param boolean $save whether or not to also save the options to the database
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* @param null|String $instance_id optionally set the instance ID for this instance at the same time. This is required if you have not already set an instance ID with set_instance_id()
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* @return void|Boolean If saving to DB, then the result of the DB save operation is returned.
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*/
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public function set_options($options, $save = false, $instance_id = null) {
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$this->_options = $options;
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// Remove any previously-stored storage object, because this is usually tied to the options
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if (!empty($this->_storage)) unset($this->_storage);
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if ($instance_id) $this->set_instance_id($instance_id);
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if ($save) return $this->save_options();
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}
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/**
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* Saves the current options to the database. This is a private function; external callers should use set_options().
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*
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* @throws Exception if trying to save options without indicating an instance_id, or if the remote storage module does not have the multi-option capability
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*/
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private function save_options() {
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if (!$this->supports_feature('multi_options')) {
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throw new Exception('save_options() can only be called on a storage method which supports multi_options (this module, '.$this->get_id().', does not)');
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}
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if (!$this->_instance_id) {
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throw new Exception('save_options() requires an instance ID, but was called without setting one (either directly or via set_instance_id())');
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}
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global $updraftplus;
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$current_db_options = $updraftplus->update_remote_storage_options_format($this->get_id());
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if (is_wp_error($current_db_options)) {
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throw new Exception('save_options(): options fetch/update failed ('.$current_db_options->get_error_code().': '.$current_db_options->get_error_message().')');
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}
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$current_db_options['settings'][$this->_instance_id] = $this->_options;
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return UpdraftPlus_Options::update_updraft_option('updraft_'.$this->get_id(), $current_db_options);
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}
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/**
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* Retrieve default options for this remote storage module.
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* This method would normally be over-ridden by the child.
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*
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* @return Array - an array of options
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*/
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public function get_default_options() {
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return array();
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}
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/**
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* Retrieve a list of supported features for this storage method
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* This method should be over-ridden by methods supporting new
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* features.
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*
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* Keys are strings, and values are booleans.
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*
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* Currently known features:
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*
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* - multi_options : indicates that the remote storage module
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* can handle its options being in the Feb-2017 multi-options
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* format. N.B. This only indicates options handling, not any
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* other multi-destination options.
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*
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* - multi_servers : not implemented yet: indicates that the
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* remote storage module can handle multiple servers at backup
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* time. This should not be specified without multi_options.
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* multi_options without multi_servers is fine - it will just
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* cause only the first entry in the options array to be used.
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*
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* - config_templates : not implemented yet: indicates that
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* the remote storage module can output its configuration in
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* Handlebars format via the get_configuration_template() method.
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*
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* @return Array - an array of supported features (any features not
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* mentioned are assumed to not be supported)
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*/
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public function get_supported_features() {
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return array();
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}
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/**
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* This method should only be called if the feature 'multi storage' is supported. In that case, it returns a template with information about the remote storage. The code below is a placeholder, and methods supporting the feature should always over-ride it.
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*
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* @return String - HTML template
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*/
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public function get_pre_configuration_template() {
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return $this->get_id().": called, but not implemented in the child class (coding error)";
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}
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/**
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* This method should only be called if the feature 'config templates' is supported. In that case, it returns a template with appropriate placeholders for specific settings. The code below is a placeholder, and methods supporting the feature should always over-ride it.
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*
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* @return String - HTML template
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*/
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public function get_configuration_template() {
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return $this->get_id().": called, but not implemented in the child class (coding error)";
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}
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/**
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* This method will set the stored storage object to that indicated
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*
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* @param Object $storage - the storage client
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*/
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public function set_storage($storage) {
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$this->_storage = $storage;
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}
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/**
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* This method will return the stored storage client
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*
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* @return Object - the stored remote storage client
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*/
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public function get_storage() {
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if (!empty($this->_storage)) return $this->_storage;
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}
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/**
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* Outputs id and name fields, as if currently within an input tag
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*
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* This assumes standardised options handling (i.e. that the options array is updraft_(method-id))
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*
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* @param Array|String $field - the field identifiers
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* @param Boolean $return_instead_of_echo - tells the method if it should return the output or echo it to page
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*/
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public function output_settings_field_name_and_id($field, $return_instead_of_echo = false) {
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$method_id = $this->get_id();
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$instance_id = $this->supports_feature('config_templates') ? '{{instance_id}}' : $this->_instance_id;
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$id = '';
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$name = '';
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if (is_array($field)) {
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foreach ($field as $key => $value) {
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$id .= '_'.$value;
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$name .= '['.$value.']';
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}
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} else {
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$id = '_'.$field;
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$name = '['.$field.']';
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}
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$output = "id=\"updraft_${method_id}${id}_${instance_id}\" name=\"updraft_${method_id}[settings][${instance_id}]${name}\" ";
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if ($return_instead_of_echo) {
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return $output;
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} else {
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echo $output;
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}
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}
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/**
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* Get the CSS ID
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*
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* @param String $field - the field identifier to return a CSS ID for
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*
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* @return String
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*/
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public function get_css_id($field) {
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$method_id = $this->get_id();
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$instance_id = $this->supports_feature('config_templates') ? '{{instance_id}}' : $this->_instance_id;
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return "updraft_${method_id}_${field}_${instance_id}";
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}
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/**
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* Get handlebarsjs template
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* This deals with any boiler-plate, prior to calling config_print()
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*
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* @uses self::config_print()
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* @uses self::get_configuration_template()
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*
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* return handlebarsjs template or html
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*/
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public function get_template() {
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ob_start();
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// Allow methods to not use this hidden field, if they do not output any settings (to prevent their saved settings being over-written by just this hidden field)
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if ($this->print_shared_settings_fields()) {
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?><tr class="<?php echo $this->get_css_classes(); ?>"><input type="hidden" name="updraft_<?php echo $this->get_id();?>[version]" value="1"></tr><?php
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}
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if ($this->supports_feature('config_templates')) {
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?>
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{{#if first_instance}}
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<?php
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$this->get_pre_configuration_template();
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if ($this->supports_feature('multi_storage')) {
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do_action('updraftplus_config_print_add_multi_storage', $this->get_id(), $this);
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}
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?>
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{{/if}}
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<?php
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do_action('updraftplus_config_print_before_storage', $this->get_id(), $this);
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if ($this->supports_feature('multi_storage')) {
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do_action('updraftplus_config_print_add_instance_label', $this->get_id(), $this);
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}
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$template = ob_get_clean();
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$template .= $this->get_configuration_template();
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} else {
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do_action('updraftplus_config_print_before_storage', $this->get_id(), $this);
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// N.B. These are mutually exclusive: config_print() is not used if config_templates is supported. So, even during transition, the UpdraftPlus_BackupModule instance only needs to support one of the two, not both.
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$this->config_print();
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$template = ob_get_clean();
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}
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return $template;
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}
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/**
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* Modifies handerbar template options. Other child class can extend it.
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*
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* @param array $opts
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* @return array - Modified handerbar template options
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*/
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public function transform_options_for_template($opts) {
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return $opts;
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}
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/**
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* Gives settings keys which values should not passed to handlebarsjs context.
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* The settings stored in UD in the database sometimes also include internal information that it would be best not to send to the front-end (so that it can't be stolen by a man-in-the-middle attacker)
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*
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* @return array - Settings array keys which should be filtered
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*/
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public function filter_frontend_settings_keys() {
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return array();
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}
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/**
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* Over-ride this to allow methods to not use the hidden version field, if they do not output any settings (to prevent their saved settings being over-written by just this hidden field
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*
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* @return [boolean] - return true to output the version field or false to not output the field
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*/
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public function print_shared_settings_fields() {
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return true;
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}
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/**
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* Prints out the configuration section for a particular module. This is now (Sep 2017) considered deprecated; things are being ported over to get_configuration_template(), indicated via the feature 'config_templates'.
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*/
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public function config_print() {
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echo $this->get_id().": module neither declares config_templates support, nor has a config_print() method (coding bug)";
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}
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/**
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* Supplies the list of keys for options to be saved in the backup job.
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*/
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public function get_credentials() {
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$keys = array('updraft_ssl_disableverify', 'updraft_ssl_nossl', 'updraft_ssl_useservercerts');
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if (!$this->supports_feature('multi_servers')) $keys[] = 'updraft_'.$this->get_id();
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return $keys;
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}
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/**
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* Returns a space-separated list of CSS classes suitable for rows in the configuration section
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*
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* @param Boolean $include_instance - a boolean value to indicate if we want to include the instance_id in the css class, we may not want to include the instance if it's for a UI element that we don't want to be removed along with other UI elements that do include a instance id.
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*
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* @returns String - the list of CSS classes
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*/
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public function get_css_classes($include_instance = true) {
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$classes = 'updraftplusmethod '.$this->get_id();
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if (!$include_instance) return $classes;
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if ($this->supports_feature('multi_options')) {
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if ($this->supports_feature('config_templates')) {
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$classes .= ' '.$this->get_id().'-{{instance_id}}';
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} else {
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$classes .= ' '.$this->get_id().'-'.$this->_instance_id;
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}
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}
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return $classes;
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}
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/**
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*
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* Returns HTML for a row for a test button
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*
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* @param String $title - The text to be used in the button
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*
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* @returns String - The HTML to be inserted into the settings page
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*/
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protected function get_test_button_html($title) {
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ob_start();
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$instance_id = $this->supports_feature('config_templates') ? '{{instance_id}}' : $this->_instance_id;
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?>
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<tr class="<?php echo $this->get_css_classes(); ?>">
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<th></th>
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<td><p><button id="updraft-<?php echo $this->get_id();?>-test-<?php echo $instance_id;?>" type="button" class="button-primary updraft-test-button updraft-<?php echo $this->get_id();?>-test" data-instance_id="<?php echo $instance_id;?>" data-method="<?php echo $this->get_id();?>" data-method_label="<?php echo esc_attr($title);?>"><?php printf(__('Test %s Settings', 'updraftplus'), $title);?></button></p></td>
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</tr>
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<?php
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return ob_get_clean();
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}
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/**
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* Get the backup method identifier for this class
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*
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* @return String - the identifier
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*/
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public function get_id() {
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$class = get_class($this);
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// UpdraftPlus_BackupModule_
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return substr($class, 25);
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}
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/**
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* Get the backup method description for this class
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*
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* @return String - the identifier
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*/
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public function get_description() {
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global $updraftplus;
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$methods = $updraftplus->backup_methods;
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$id = $this->get_id();
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return $methods[$id];
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}
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/**
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* Sets the instance ID - for supporting multi_options
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*
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* @param String $instance_id - the instance ID
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*/
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public function set_instance_id($instance_id) {
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$this->_instance_id = $instance_id;
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}
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/**
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* Sets the instance ID - for supporting multi_options
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*
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* @returns String the instance ID
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*/
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public function get_instance_id() {
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return $this->_instance_id;
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}
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/**
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* Check whether this storage module supports a mentioned feature
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*
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* @param String $feature - the feature concerned
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*
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* @returns Boolean
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*/
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public function supports_feature($feature) {
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return in_array($feature, $this->get_supported_features());
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}
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/**
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* Retrieve options for this remote storage module.
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* N.B. The option name instance_id is reserved and should not be used.
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*
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* @uses get_default_options
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*
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* @return Array - array of options. This will include default values for any options not set.
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*/
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public function get_options() {
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global $updraftplus;
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$supports_multi_options = $this->supports_feature('multi_options');
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if (is_array($this->_options)) {
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// First, prioritise any options that were explicitly set. This is the eventual goal for all storage modules.
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$options = $this->_options;
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} elseif (is_callable(array($this, 'get_opts'))) {
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// Next, get any options available via a legacy / over-ride method.
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if ($supports_multi_options) {
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// This is forbidden, because get_opts() is legacy and is for methods that do not support multi-options. Supporting multi-options leads to the array format being updated, which will then break get_opts().
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die('Fatal error: method '.$this->get_id().' both supports multi_options and provides a get_opts method');
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}
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$options = $this->get_opts();
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} else {
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// Next, look for job options (which in turn, falls back to saved settings if no job options were set)
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$options = $updraftplus->get_job_option('updraft_'.$this->get_id());
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if (!is_array($options)) $options = array();
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if ($supports_multi_options) {
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if (!isset($options['version'])) {
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$options_full = $updraftplus->update_remote_storage_options_format($this->get_id());
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if (is_wp_error($options_full)) {
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$updraftplus->log("Options retrieval failure: ".$options_full->get_error_code().": ".$options_full->get_error_message()." (".json_encode($options_full->get_error_data()).")");
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return array();
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}
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} else {
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$options_full = $options;
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}
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// UpdraftPlus_BackupModule::get_options() is for getting the current instance's options. So, this branch (going via the job option) is a legacy route, and hence we just give back the first one. The non-legacy route is to call the set_options() method externally.
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$options = reset($options_full['settings']);
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if (false === $options) {
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$updraftplus->log("Options retrieval failure (no options set)");
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return array();
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}
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$instance_id = key($options_full['settings']);
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$this->set_options($options, false, $instance_id);
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}
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}
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$options = apply_filters(
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'updraftplus_backupmodule_get_options',
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wp_parse_args($options, $this->get_default_options()),
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$this
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);
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return $options;
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}
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/**
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* Set job data that is local to this storage instance
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* (i.e. the key does not need to be unique across instances)
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*
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* @uses UpdraftPlus::jobdata_set()
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*
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* @param String $key - the key for the job data
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* @param Mixed $value - the data to be stored
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*/
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public function jobdata_set($key, $value) {
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$instance_key = $this->get_id().'-'.($this->_instance_id ? $this->_instance_id : 'no_instance');
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global $updraftplus;
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$instance_data = $updraftplus->jobdata_get($instance_key);
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if (!is_array($instance_data)) $instance_data = array();
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$instance_data[$key] = $value;
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$updraftplus->jobdata_set($instance_key, $instance_data);
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}
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/**
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* Get job data that is local to this storage instance
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* (i.e. the key does not need to be unique across instances)
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*
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* @uses UpdraftPlus::jobdata_get()
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*
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* @param String $key - the key for the job data
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* @param Mixed $default - the default to return if nothing was set
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* @param String|Null $legacy_key - the previous name of the key, prior to instance-specific job data (so that upgrades across versions whilst a backup is in progress can still find its data). In future, support for this can be removed.
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*/
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public function jobdata_get($key, $default = null, $legacy_key = null) {
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$instance_key = $this->get_id().'-'.($this->_instance_id ? $this->_instance_id : 'no_instance');
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global $updraftplus;
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$instance_data = $updraftplus->jobdata_get($instance_key);
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if (is_array($instance_data) && isset($instance_data[$key])) return $instance_data[$key];
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return is_string($legacy_key) ? $updraftplus->jobdata_get($legacy_key, $default) : $default;
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}
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/**
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* Delete job data that is local to this storage instance
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* (i.e. the key does not need to be unique across instances)
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*
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* @uses UpdraftPlus::jobdata_set()
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*
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* @param String $key - the key for the job data
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* @param String|Null $legacy_key - the previous name of the key, prior to instance-specific job data (so that upgrades across versions whilst a backup is in progress can still find its data)
|
|
*/
|
|
public function jobdata_delete($key, $legacy_key = null) {
|
|
|
|
$instance_key = $this->get_id().'-'.($this->_instance_id ? $this->_instance_id : 'no_instance');
|
|
|
|
global $updraftplus;
|
|
|
|
$instance_data = $updraftplus->jobdata_get($instance_key);
|
|
|
|
if (is_array($instance_data) && isset($instance_data[$key])) {
|
|
unset($instance_data[$key]);
|
|
$updraftplus->jobdata_set($instance_key, $instance_data);
|
|
}
|
|
|
|
if (is_string($legacy_key)) $updraftplus->jobdata_delete($legacy_key);
|
|
|
|
}
|
|
|
|
/**
|
|
* This method will either return or echo the constructed auth link for the remote storage method
|
|
*
|
|
* @param Boolean $echo_instead_of_return - a boolean to indicate if the authentication link should be echo or returned
|
|
* @param Boolean $template_instead_of_notice - a boolean to indicate if the authentication link is for a template or a notice
|
|
* @return Void|String - returns a string or nothing depending on the parameters
|
|
*/
|
|
public function get_authentication_link($echo_instead_of_return = true, $template_instead_of_notice = true) {
|
|
if (!$echo_instead_of_return) {
|
|
ob_start();
|
|
}
|
|
|
|
$account_warning = '';
|
|
$id = $this->get_id();
|
|
$description = $this->get_description();
|
|
|
|
if ($this->output_account_warning()) {
|
|
$account_warning = __('Ensure you are logged into the correct account before continuing.', 'updraftplus');
|
|
}
|
|
|
|
if ($template_instead_of_notice) {
|
|
$instance_id = "{{instance_id}}";
|
|
$text = sprintf(__("<strong>After</strong> you have saved your settings (by clicking 'Save Changes' below), then come back here once and click this link to complete authentication with %s.", 'updraftplus'), $description);
|
|
} else {
|
|
$instance_id = $this->get_instance_id();
|
|
$text = sprintf(__('Follow this link to authorize access to your %s account (you will not be able to back up to %s without it).', 'updraftplus'), $description, $description);
|
|
}
|
|
|
|
echo $account_warning . ' <a class="updraft_authlink" href="'.UpdraftPlus_Options::admin_page_url().'?&action=updraftmethod-'.$id.'-auth&page=updraftplus&updraftplus_'.$id.'auth=doit&updraftplus_instance='.$instance_id.'" data-instance_id="'.$instance_id.'" data-remote_method="'.$id.'">'.$text.'</a>';
|
|
|
|
if (!$echo_instead_of_return) {
|
|
return ob_get_clean();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check the authentication is valid before proceeding to call the authentication method
|
|
*/
|
|
public function action_authenticate_storage() {
|
|
if (isset($_GET['updraftplus_'.$this->get_id().'auth']) && 'doit' == $_GET['updraftplus_'.$this->get_id().'auth'] && !empty($_GET['updraftplus_instance'])) {
|
|
$this->authenticate_storage((string) $_GET['updraftplus_instance']);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Authenticate the remote storage and save settings
|
|
*
|
|
* @param String $instance_id - The remote storage instance id
|
|
*/
|
|
public function authenticate_storage($instance_id) {
|
|
if (method_exists($this, 'do_authenticate_storage')) {
|
|
$this->do_authenticate_storage($instance_id);
|
|
} else {
|
|
error_log($this->get_id().": module does not have an authenticate storage method (coding bug)");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method will either return or echo the constructed deauth link for the remote storage method
|
|
*
|
|
* @param boolean $echo_instead_of_return - a boolean to indicate if the deauthentication link should be echo or returned
|
|
* @return Void|String - returns a string or nothing depending on the parameters
|
|
*/
|
|
public function get_deauthentication_link($echo_instead_of_return = true) {
|
|
if (!$echo_instead_of_return) {
|
|
ob_start();
|
|
}
|
|
|
|
$id = $this->get_id();
|
|
$description = $this->get_description();
|
|
|
|
echo ' <a class="updraft_deauthlink" href="'.UpdraftPlus_Options::admin_page_url().'?action=updraftmethod-'.$id.'-auth&page=updraftplus&updraftplus_'.$id.'auth=deauth&nonce='.wp_create_nonce($id.'_deauth_nonce').'&updraftplus_instance={{instance_id}}" data-instance_id="{{instance_id}}" data-remote_method="'.$id.'">'.sprintf(__("Follow this link to remove this instances settings for %s.", 'updraftplus'), $description).'</a>';
|
|
|
|
if (!$echo_instead_of_return) {
|
|
return ob_get_clean();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check the deauthentication is valid before proceeding to call the deauthentication method
|
|
*/
|
|
public function action_deauthenticate_storage() {
|
|
if (isset($_GET['updraftplus_'.$this->get_id().'auth']) && 'deauth' == $_GET['updraftplus_'.$this->get_id().'auth'] && !empty($_GET['nonce']) && !empty($_GET['updraftplus_instance']) && wp_verify_nonce($_GET['nonce'], $this->get_id().'_deauth_nonce')) {
|
|
$this->deauthenticate_storage($_GET['updraftplus_instance']);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Deauthenticate the remote storage and remove the saved settings
|
|
*
|
|
* @param String $instance_id - The remote storage instance id
|
|
*/
|
|
public function deauthenticate_storage($instance_id) {
|
|
if (method_exists($this, 'do_deauthenticate_storage')) {
|
|
$this->do_deauthenticate_storage($instance_id);
|
|
}
|
|
$opts = $this->get_default_options();
|
|
$this->set_options($opts, true, $instance_id);
|
|
}
|
|
|
|
/**
|
|
* Over-ride this to allow methods to output extra information about using the correct account for OAuth storage methods
|
|
*
|
|
* @return Boolean - return false so that no extra information is output
|
|
*/
|
|
public function output_account_warning() {
|
|
return false;
|
|
}
|
|
}
|