As the sun rises and the forest mist clears, and the clouds return and the caves darken, these changes of light and shadow are the morning and evening in the mountains. Wildflowers bloom with their subtle fragrance, fine trees flourish with their dense shade, the wind and frost are pure and clean, and the water recedes to reveal the rocks—these are the four seasons in the mountains. Going out in the morning and returning in the evening, the scenery of the four seasons is different, and the joy is endless.至于负者歌于途,行者休于树,前者呼,后者应,伛偻提携,往来而不绝者,滁人游也。临溪而渔,溪深而鱼肥,酿泉为酒,泉香而酒洌,山肴野蔌,杂然而前陈者,太守宴也。宴酣之乐,非丝非竹,射者中,弈者胜,觥筹交错,起坐而喧哗者,众宾欢也。苍颜白发,颓然乎其间者,太守醉也。 HEX
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File: /home/labeautef/piscines-services.com/wp-admin/includes/class-plugin-installer-skin.php
<?php
/**
 * Upgrader API: Plugin_Installer_Skin class
 *
 * @package WordPress
 * @subpackage Upgrader
 * @since 4.6.0
 */

/**
 * Plugin Installer Skin for WordPress Plugin Installer.
 *
 * @since 2.8.0
 * @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader-skins.php.
 *
 * @see WP_Upgrader_Skin
 */
class Plugin_Installer_Skin extends WP_Upgrader_Skin {
	public $api;
	public $type;
	public $url;
	public $overwrite;

	private $is_downgrading = false;

	/**
	 * Constructor.
	 *
	 * Sets up the plugin installer skin.
	 *
	 * @since 2.8.0
	 *
	 * @param array $args
	 */
	public function __construct( $args = array() ) {
		$defaults = array(
			'type'      => 'web',
			'url'       => '',
			'plugin'    => '',
			'nonce'     => '',
			'title'     => '',
			'overwrite' => '',
		);
		$args     = wp_parse_args( $args, $defaults );

		$this->type      = $args['type'];
		$this->url       = $args['url'];
		$this->api       = isset( $args['api'] ) ? $args['api'] : array();
		$this->overwrite = $args['overwrite'];

		parent::__construct( $args );
	}

	/**
	 * Performs an action before installing a plugin.
	 *
	 * @since 2.8.0
	 */
	public function before() {
		if ( ! empty( $this->api ) ) {
			$this->upgrader->strings['process_success'] = sprintf(
				$this->upgrader->strings['process_success_specific'],
				$this->api->name,
				$this->api->version
			);
		}
	}

	/**
	 * Hides the `process_failed` error when updating a plugin by uploading a zip file.
	 *
	 * @since 5.5.0
	 *
	 * @param WP_Error $wp_error WP_Error object.
	 * @return bool True if the error should be hidden, false otherwise.
	 */
	public function hide_process_failed( $wp_error ) {
		if (
			'upload' === $this->type &&
			'' === $this->overwrite &&
			$wp_error->get_error_code() === 'folder_exists'
		) {
			return true;
		}

		return false;
	}

	/**
	 * Performs an action following a plugin install.
	 *
	 * @since 2.8.0
	 */
	public function after() {
		// Check if the plugin can be overwritten and output the HTML.
		if ( $this->do_overwrite() ) {
			return;
		}

		$plugin_file = $this->upgrader->plugin_info();

		$install_actions = array();

		$from = isset( $_GET['from'] ) ? wp_unslash( $_GET['from'] ) : 'plugins';

		if ( 'import' === $from ) {
			$install_actions['activate_plugin'] = sprintf(
				'<a class="button button-primary" href="%s" target="_parent">%s</a>',
				wp_nonce_url( 'plugins.php?action=activate&amp;from=import&amp;plugin=' . urlencode( $plugin_file ), 'activate-plugin_' . $plugin_file ),
				__( 'Activate Plugin &amp; Run Importer' )
			);
		} elseif ( 'press-this' === $from ) {
			$install_actions['activate_plugin'] = sprintf(
				'<a class="button button-primary" href="%s" target="_parent">%s</a>',
				wp_nonce_url( 'plugins.php?action=activate&amp;from=press-this&amp;plugin=' . urlencode( $plugin_file ), 'activate-plugin_' . $plugin_file ),
				__( 'Activate Plugin &amp; Go to Press This' )
			);
		} else {
			$install_actions['activate_plugin'] = sprintf(
				'<a class="button button-primary" href="%s" target="_parent">%s</a>',
				wp_nonce_url( 'plugins.php?action=activate&amp;plugin=' . urlencode( $plugin_file ), 'activate-plugin_' . $plugin_file ),
				__( 'Activate Plugin' )
			);
		}

		if ( is_multisite() && current_user_can( 'manage_network_plugins' ) ) {
			$install_actions['network_activate'] = sprintf(
				'<a class="button button-primary" href="%s" target="_parent">%s</a>',
				wp_nonce_url( 'plugins.php?action=activate&amp;networkwide=1&amp;plugin=' . urlencode( $plugin_file ), 'activate-plugin_' . $plugin_file ),
				_x( 'Network Activate', 'plugin' )
			);
			unset( $install_actions['activate_plugin'] );
		}

		if ( 'import' === $from ) {
			$install_actions['importers_page'] = sprintf(
				'<a href="%s" target="_parent">%s</a>',
				admin_url( 'import.php' ),
				__( 'Go to Importers' )
			);
		} elseif ( 'web' === $this->type ) {
			$install_actions['plugins_page'] = sprintf(
				'<a href="%s" target="_parent">%s</a>',
				self_admin_url( 'plugin-install.php' ),
				__( 'Go to Plugin Installer' )
			);
		} elseif ( 'upload' === $this->type && 'plugins' === $from ) {
			$install_actions['plugins_page'] = sprintf(
				'<a href="%s">%s</a>',
				self_admin_url( 'plugin-install.php' ),
				__( 'Go to Plugin Installer' )
			);
		} else {
			$install_actions['plugins_page'] = sprintf(
				'<a href="%s" target="_parent">%s</a>',
				self_admin_url( 'plugins.php' ),
				__( 'Go to Plugins page' )
			);
		}

		if ( ! $this->result || is_wp_error( $this->result ) ) {
			unset( $install_actions['activate_plugin'], $install_actions['network_activate'] );
		} elseif ( ! current_user_can( 'activate_plugin', $plugin_file ) || is_plugin_active( $plugin_file ) ) {
			unset( $install_actions['activate_plugin'] );
		}

		/**
		 * Filters the list of action links available following a single plugin installation.
		 *
		 * @since 2.7.0
		 *
		 * @param string[] $install_actions Array of plugin action links.
		 * @param object   $api             Object containing WordPress.org API plugin data. Empty
		 *                                  for non-API installs, such as when a plugin is installed
		 *                                  via upload.
		 * @param string   $plugin_file     Path to the plugin file relative to the plugins directory.
		 */
		$install_actions = apply_filters( 'install_plugin_complete_actions', $install_actions, $this->api, $plugin_file );

		if ( ! empty( $install_actions ) ) {
			$this->feedback( implode( ' ', (array) $install_actions ) );
		}
	}

	/**
	 * Checks if the plugin can be overwritten and outputs the HTML for overwriting a plugin on upload.
	 *
	 * @since 5.5.0
	 *
	 * @return bool Whether the plugin can be overwritten and HTML was outputted.
	 */
	private function do_overwrite() {
		if ( 'upload' !== $this->type || ! is_wp_error( $this->result ) || 'folder_exists' !== $this->result->get_error_code() ) {
			return false;
		}

		$folder = $this->result->get_error_data( 'folder_exists' );
		$folder = ltrim( substr( $folder, strlen( WP_PLUGIN_DIR ) ), '/' );

		$current_plugin_data = false;
		$all_plugins         = get_plugins();

		foreach ( $all_plugins as $plugin => $plugin_data ) {
			if ( strrpos( $plugin, $folder ) !== 0 ) {
				continue;
			}

			$current_plugin_data = $plugin_data;
		}

		$new_plugin_data = $this->upgrader->new_plugin_data;

		if ( ! $current_plugin_data || ! $new_plugin_data ) {
			return false;
		}

		echo '<h2 class="update-from-upload-heading">' . esc_html__( 'This plugin is already installed.' ) . '</h2>';

		$this->is_downgrading = version_compare( $current_plugin_data['Version'], $new_plugin_data['Version'], '>' );

		$rows = array(
			'Name'        => __( 'Plugin name' ),
			'Version'     => __( 'Version' ),
			'Author'      => __( 'Author' ),
			'RequiresWP'  => __( 'Required WordPress version' ),
			'RequiresPHP' => __( 'Required PHP version' ),
		);

		$table  = '<table class="update-from-upload-comparison"><tbody>';
		$table .= '<tr><th></th><th>' . esc_html_x( 'Current', 'plugin' ) . '</th>';
		$table .= '<th>' . esc_html_x( 'Uploaded', 'plugin' ) . '</th></tr>';

		$is_same_plugin = true; // Let's consider only these rows.

		foreach ( $rows as $field => $label ) {
			$old_value = ! empty( $current_plugin_data[ $field ] ) ? (string) $current_plugin_data[ $field ] : '-';
			$new_value = ! empty( $new_plugin_data[ $field ] ) ? (string) $new_plugin_data[ $field ] : '-';

			$is_same_plugin = $is_same_plugin && ( $old_value === $new_value );

			$diff_field   = ( 'Version' !== $field && $new_value !== $old_value );
			$diff_version = ( 'Version' === $field && $this->is_downgrading );

			$table .= '<tr><td class="name-label">' . $label . '</td><td>' . wp_strip_all_tags( $old_value ) . '</td>';
			$table .= ( $diff_field || $diff_version ) ? '<td class="warning">' : '<td>';
			$table .= wp_strip_all_tags( $new_value ) . '</td></tr>';
		}

		$table .= '</tbody></table>';

		/**
		 * Filters the compare table output for overwriting a plugin package on upload.
		 *
		 * @since 5.5.0
		 *
		 * @param string $table               The output table with Name, Version, Author, RequiresWP, and RequiresPHP info.
		 * @param array  $current_plugin_data Array with current plugin data.
		 * @param array  $new_plugin_data     Array with uploaded plugin data.
		 */
		echo apply_filters( 'install_plugin_overwrite_comparison', $table, $current_plugin_data, $new_plugin_data );

		$install_actions = array();
		$can_update      = true;

		$blocked_message  = '<p>' . esc_html__( 'The plugin cannot be updated due to the following:' ) . '</p>';
		$blocked_message .= '<ul class="ul-disc">';

		$requires_php = isset( $new_plugin_data['RequiresPHP'] ) ? $new_plugin_data['RequiresPHP'] : null;
		$requires_wp  = isset( $new_plugin_data['RequiresWP'] ) ? $new_plugin_data['RequiresWP'] : null;

		if ( ! is_php_version_compatible( $requires_php ) ) {
			$error = sprintf(
				/* translators: 1: Current PHP version, 2: Version required by the uploaded plugin. */
				__( 'The PHP version on your server is %1$s, however the uploaded plugin requires %2$s.' ),
				PHP_VERSION,
				$requires_php
			);

			$blocked_message .= '<li>' . esc_html( $error ) . '</li>';
			$can_update       = false;
		}

		if ( ! is_wp_version_compatible( $requires_wp ) ) {
			$error = sprintf(
				/* translators: 1: Current WordPress version, 2: Version required by the uploaded plugin. */
				__( 'Your WordPress version is %1$s, however the uploaded plugin requires %2$s.' ),
				esc_html( wp_get_wp_version() ),
				$requires_wp
			);

			$blocked_message .= '<li>' . esc_html( $error ) . '</li>';
			$can_update       = false;
		}

		$blocked_message .= '</ul>';

		if ( $can_update ) {
			if ( $this->is_downgrading ) {
				$warning = sprintf(
					/* translators: %s: Documentation URL. */
					__( 'You are uploading an older version of a current plugin. You can continue to install the older version, but be sure to <a href="%s">back up your database and files</a> first.' ),
					__( 'https://developer.wordpress.org/advanced-administration/security/backup/' )
				);
			} else {
				$warning = sprintf(
					/* translators: %s: Documentation URL. */
					__( 'You are updating a plugin. Be sure to <a href="%s">back up your database and files</a> first.' ),
					__( 'https://developer.wordpress.org/advanced-administration/security/backup/' )
				);
			}

			echo '<p class="update-from-upload-notice">' . $warning . '</p>';

			$overwrite = $this->is_downgrading ? 'downgrade-plugin' : 'update-plugin';

			$install_actions['overwrite_plugin'] = sprintf(
				'<a class="button button-primary update-from-upload-overwrite" href="%s" target="_parent">%s</a>',
				wp_nonce_url( add_query_arg( 'overwrite', $overwrite, $this->url ), 'plugin-upload' ),
				_x( 'Replace current with uploaded', 'plugin' )
			);
		} else {
			echo $blocked_message;
		}

		$cancel_url = add_query_arg( 'action', 'upload-plugin-cancel-overwrite', $this->url );

		$install_actions['plugins_page'] = sprintf(
			'<a class="button" href="%s">%s</a>',
			wp_nonce_url( $cancel_url, 'plugin-upload-cancel-overwrite' ),
			__( 'Cancel and go back' )
		);

		/**
		 * Filters the list of action links available following a single plugin installation failure
		 * when overwriting is allowed.
		 *
		 * @since 5.5.0
		 *
		 * @param string[] $install_actions Array of plugin action links.
		 * @param object   $api             Object containing WordPress.org API plugin data.
		 * @param array    $new_plugin_data Array with uploaded plugin data.
		 */
		$install_actions = apply_filters( 'install_plugin_overwrite_actions', $install_actions, $this->api, $new_plugin_data );

		if ( ! empty( $install_actions ) ) {
			printf(
				'<p class="update-from-upload-expired hidden">%s</p>',
				__( 'The uploaded file has expired. Please go back and upload it again.' )
			);
			echo '<p class="update-from-upload-actions">' . implode( ' ', (array) $install_actions ) . '</p>';
		}

		return true;
	}
}