Commit inicial - WordPress Análisis de Precios Unitarios

- WordPress core y plugins
- Tema Twenty Twenty-Four configurado
- Plugin allow-unfiltered-html.php simplificado
- .gitignore configurado para excluir wp-config.php y uploads

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

wp-content/plugins/PDFEmbedder-premium-secure/secure_pdf_embedder.php

@@ -0,0 +1,758 @@
+<?php
+/**
+ * Plugin Name: PDF Embedder Premium Secure
+ * Plugin URI: http://wp-pdf.com/
+ * Description: Embed secure undownloadable PDFs straight into your posts and pages, with flexible width and height. No third-party services required.
+ * Version: 5.1.4
+ * Author: PDF Embedder Team
+ * Author URI: http://wp-pdf.com/
+ * Text Domain: pdf-embedder
+ * License: Premium Paid per WordPress site
+ *
+ * Do not copy, modify, or redistribute without authorization from author Lesterland Ltd (contact@wp-pdf.com)
+ *
+ * You need to have purchased a license to install this software on each website.
+ *
+ * You are not authorized to use, modify, or distribute this software beyond the single site license(s) that you
+ * have purchased.
+ *
+ * You must not remove or alter any copyright notices on any and all copies of this software.
+ *
+ * This software is NOT licensed under one of the public "open source" licenses you may be used to on the web.
+ *
+ * For full license details, and to understand your rights, please refer to the agreement you made when you purchased it
+ * from our website at https://wp-pdf.com/
+ *
+ * THIS SOFTWARE IS SUPPLIED "AS-IS" AND THE LIABILITY OF THE AUTHOR IS STRICTLY LIMITED TO THE PURCHASE PRICE YOU PAID
+ * FOR YOUR LICENSE.
+ *
+ * Please report violations to contact@wp-pdf.com
+ *
+ * Copyright LionShare Technologies, registered company in the United States of America
+ *
+ * @since 1.0.0
+ *
+ * @package WP-PDF-Secure
+ */
+
+require_once plugin_dir_path( __FILE__ ) . '/core/commercial_pdf_embedder.php';
+
+if ( class_exists( 'WP_PDF_Commercial' ) ) {
+
+	/**
+	 * PDFEmb Secure Core Class.
+	 *
+	 * @since 5.1.0
+	 */
+	final class WP_PDF_Secure extends WP_PDF_Commercial {
+
+		/**
+		 * Singleton Instance
+		 *
+		 * @var object
+		 */
+		private static $instance = null;
+
+		/**
+		 * Plugin Version
+		 *
+		 * @var string
+		 */
+		protected $plugin_version = '5.1.4';
+
+		/**
+		 * Store Url
+		 *
+		 * @var string
+		 */
+		protected $wppdf_store_url = 'http://wp-pdf.com/';
+
+		/**
+		 * Item Name
+		 *
+		 * @var string
+		 */
+		protected $wppdf_item_name = 'PDF Embedder Secure';
+
+		/**
+		 * WP PDF Item
+		 *
+		 * @var int
+		 */
+		protected $wppdf_item_id = 17;
+
+		/**
+		 * Secure Uploader
+		 *
+		 * @var [type]
+		 */
+		protected $secure_uploader = null;
+
+		/**
+		 * Undocumented variable
+		 *
+		 * @var string
+		 */
+		protected static $poweredby_optionname = 'poweredby';
+
+		/**
+		 * Activation Hook
+		 *
+		 * @param bool $network_wide Network wide check.
+		 * @return void
+		 */
+		public function pdfemb_activation_hook( $network_wide ) {
+
+			$su = $this->get_SecureUploader();
+			$su->create_protection_files( true );
+			parent::pdfemb_activation_hook( $network_wide );
+
+			$old_options = get_site_option( self::self_option_name() );
+
+			if ( ! $old_options ) {
+				update_site_option( self::$poweredby_optionname, 'off' );
+			}
+
+			$activation_time = get_option( 'wppdf_emb_activation', false );
+
+			if ( ! $activation_time ) {
+				update_option( 'wppdf_emb_activation', time() );
+			}
+
+		}
+
+		/**
+		 * Helper Method to get translations array
+		 *
+		 * @return array
+		 */
+		protected function get_translation_array() {
+
+			$su = $this->get_SecureUploader();
+
+			$options = $this->get_option_pdfemb();
+
+			return array_merge(
+				parent::get_translation_array(),
+				array(
+					'k'                       => $su->get_secret_key(),
+					'is_admin'                => ( current_user_can( 'manage_options' ) ),
+					'ajaxurl'                 => admin_url( 'admin-ajax.php' ),
+					'watermark_map'           => apply_filters( 'pdfemb_watermark_map', $this->calculate_watermark_map() ),
+					'watermark_evenpagesonly' => $options['pdfemb_wm_evenpages'],
+				)
+			);
+		}
+
+		/**
+		 * Watermark Map Calculator
+		 *
+		 * @return array
+		 */
+		protected function calculate_watermark_map() {
+			$options = $this->get_option_pdfemb();
+
+			$text_array = preg_split( '/(\r\n|\n\r|\n|\r)/', $options['pdfemb_wm_text'], -1 );
+
+			if ( count( $text_array ) === 0 ) {
+				return array();
+			}
+
+			$notloggedin_text = __( 'Not logged in', 'pdf-embedder' );
+			$var_names        = array( '{fullname}', '{username}', '{email}' );
+			$var_values       = array( $notloggedin_text, $notloggedin_text, $notloggedin_text );
+
+			$current_user = wp_get_current_user();
+			if ( ( $current_user instanceof WP_User ) && $current_user->ID ) {
+				$var_values = array(
+					$current_user->first_name . ' ' . $current_user->last_name,
+					$current_user->user_login,
+					$current_user->user_email,
+				);
+			}
+
+			$var_names  = apply_filters( 'pdfemb_watermark_var_names', $var_names );
+			$var_values = apply_filters( 'pdfemb_watermark_var_values', $var_values );
+
+			$watermark_map = array();
+			$fontsize      = $this->int_or_default( $options['pdfemb_wm_fontsize'], 20 );
+
+			$voffset   = $this->int_or_default( $options['pdfemb_wm_voffset'], 30 );
+			$cssstyles = array(
+				'globalAlpha' => $this->int_or_default( $options['pdfemb_wm_opacity'], 20 ) / 100,
+			);
+			foreach ( $text_array as $text ) {
+				$watermark_map[] = array(
+					str_replace( $var_names, $var_values, $text ),
+					5,
+					$voffset,
+					$options['pdfemb_wm_halign'],
+					$options['pdfemb_wm_rotate'],
+					$fontsize,
+					$cssstyles,
+				);
+
+				$voffset += $fontsize / 6.5;
+			}
+
+			return $watermark_map;
+		}
+
+		/**
+		 * Int or Default.
+		 *
+		 * @param mixed $val Value.
+		 * @param mixed $default Default Option.
+		 * @return mixed
+		 */
+		protected function int_or_default( $val, $default ) {
+			if ( is_numeric( $val ) ) {
+				return intval( $val );
+			}
+			return $default;
+		}
+
+		/**
+		 * Modify PDF Url.
+		 *
+		 * @param string $url Url.
+		 * @return string
+		 */
+		protected function modify_pdfurl( $url ) {
+
+			$su = $this->get_SecureUploader();
+
+			$securepdfpath = $su->get_secure_path( $url );
+
+			if ( '' !== $securepdfpath ) {
+				// Turn into a secure version of the URL.
+				$url = wp_parse_url( home_url( '/' ), PHP_URL_PATH ) . '?pdfemb-serveurl=' . rawurlencode( $url );
+			}
+
+			return parent::modify_pdfurl( $url );
+		}
+
+		/**
+		 * Admin Init.
+		 *
+		 * @return void
+		 */
+		public function pdfemb_admin_init() {
+			parent::pdfemb_admin_init();
+			$su = $this->get_SecureUploader();
+			$su->intercept_uploads();
+			$su->create_protection_files( false );
+
+			// For PDF Thumbnails mainly.
+			add_filter( 'pdfth_pdf_direct_download_url', array( $this, 'pdfth_pdf_direct_download_url' ), 1, 10 );
+			add_filter( 'pdfth_pdf_is_secure', array( $this, 'pdfth_pdf_is_secure' ), 2, 10 );
+		}
+
+		/**
+		 * Init.
+		 *
+		 * @return void
+		 */
+		public function pdfemb_init() {
+			$su = $this->get_SecureUploader();
+			$su->handle_downloads();
+			parent::pdfemb_init();
+		}
+
+		/**
+		 * Undocumented function
+		 *
+		 * @return object
+		 */
+		public function get_SecureUploader() {
+			if ( is_null( $this->secure_uploader ) ) {
+				include_once dirname( __FILE__ ) . '/core/secure/uploads.php';
+					$options           = $this->get_option_pdfemb();
+				$this->secure_uploader = new WP_PDF_Secure_Uploader( $options['pdfemb_secure'], $options['pdfemb_cacheencrypted'] );
+			}
+			return $this->secure_uploader;
+		}
+
+		/**
+		 * Extra Shortcode Atts
+		 *
+		 * @param array  $atts Shortcode atts.
+		 * @param string $content Content.
+		 * @return string
+		 */
+		protected function extra_shortcode_attrs( $atts, $content = null ) {
+
+			$options = $this->get_option_pdfemb();
+
+			$securemore             = '';
+			$disablerightclick_html = '';
+
+			if ( isset( $atts['url'] ) ) {
+
+				$su = $this->get_SecureUploader();
+
+				$securepdfpath = $su->get_secure_path( $atts['url'] );
+
+				if ( '' !== $securepdfpath ) {
+					// Is a secure PDF.
+					$download = isset( $atts['download'] ) ? $atts['download'] : ( isset( $options['pdfemb_download'] ) && $options['pdfemb_download'] ? 'on' : 'off' );
+					if ( ! in_array( $download, array( 'on', 'off' ), true ) ) {
+						$download = 'off';
+					}
+
+					if ( 'on' === $download ) {
+							$securemore = ' data-download-nonce="' . wp_create_nonce( 'pdfemb-secure-download-' . $atts['url'] ) . '"';
+					}
+
+					$disablerightclick = isset( $atts['disablerightclick'] ) ? $atts['disablerightclick'] : ( isset( $options['pdfemb_disablerightclick'] ) && $options['pdfemb_disablerightclick'] ? 'on' : 'off' );
+					if ( ! in_array( $disablerightclick, array( 'on', 'off' ), true ) ) {
+						$disablerightclick = 'off';
+					}
+
+					if ( 'on' === $disablerightclick ) {
+						$disablerightclick_html = ' data-disablerightclick="on"';
+					}
+				}
+			}
+
+			return parent::extra_shortcode_attrs( $atts, $content ) . $securemore . $disablerightclick_html;
+		}
+
+		/**
+		 * Helper method for output content.
+		 *
+		 * @param string $pdfurl PDF Url.
+		 * @return string
+		 */
+		protected function output_the_content( $pdfurl ) {
+			$options = $this->get_option_pdfemb();
+			if ( ! $options['pdfemb_secureattpages'] && $this->is_secure( $pdfurl ) ) {
+				$content = '<p>' . esc_html__( 'Attachment Pages are disabled for secure PDFs (your admin can enable them in the Secure tab of PDF Embedder settings).', 'pdf-embedder' ) . '</p>';
+			} else {
+				$content = parent::output_the_content( $pdfurl );
+			}
+			return $content;
+		}
+
+		/**
+		 * Is url Secure
+		 *
+		 * @param string $pdfurl PDF Url.
+		 * @return bool
+		 */
+		protected function is_secure( $pdfurl ) {
+			$su            = $this->get_SecureUploader();
+			$securepdfpath = $su->get_secure_path( $pdfurl );
+			return '' !== $securepdfpath;
+		}
+
+		/**
+		 * Direct downloaad URl.
+		 *
+		 * @param string $pdfurl PDF Url.
+		 * @return string
+		 */
+		public function pdfth_pdf_direct_download_url( $pdfurl ) {
+
+			$su            = $this->get_SecureUploader();
+			$securepdfpath = $su->get_secure_path( $pdfurl );
+
+			if ( '' !== $securepdfpath ) {
+				$pdfurl = wp_parse_url( home_url( '/' ), PHP_URL_PATH ) . '?pdfemb-serveurl=' . rawurlencode( $pdfurl ) . '&pdfemb-nonce=' . wp_create_nonce( 'pdfemb-secure-download-' . $pdfurl );
+			}
+
+			return $pdfurl;
+		}
+
+		/**
+		 * Undocumented function
+		 *
+		 * @param string $pdfurl PDF url.
+		 * @return boolean
+		 */
+		public function pdfth_pdf_is_secure( $pdfurl ) {
+
+			$su            = $this->get_SecureUploader();
+			$securepdfpath = $su->get_secure_path( $pdfurl );
+
+			return '' !== $securepdfpath;
+
+		}
+
+		/**
+		 * Undocumented function
+		 *
+		 * @return void
+		 */
+		protected function pdfemb_securesection_text() {
+			$options = $this->get_option_pdfemb();
+			?>
+
+			<h2><?php esc_html_e( 'Secure PDFs', 'pdf-embedder' ); ?></h2>
+
+			<p><?php esc_html_e( 'Your server must be running Apache and supporting .htaccess rules to restrict access to files.', 'pdf-embedder' ); ?></p>
+
+			<label for="pdfemb_secure" class="textinput"><?php esc_html_e( 'Secure PDFs', 'pdf-embedder' ); ?></label>
+
+			<span>
+					<input type="checkbox" name='<?php echo esc_attr( $this->get_options_name() ); ?>[pdfemb_secure]' id='pdfemb_secure' class='checkbox' <?php checked( boolval( $options['pdfemb_secure'] ), 1 ); ?> />
+					<label for="pdfemb_secure" class="checkbox plain"><?php esc_html_e( "Send new PDF media uploads to 'securepdfs' folder", 'pdf-embedder' ); ?></label>
+			</span>
+
+			<br class="clear" />
+
+
+			<label for="pdfemb_disablerightclick" class="textinput"><?php esc_html_e( 'Disable Right Click', 'pdf-embedder' ); ?></label>
+			<span>
+					<input type="checkbox" name='<?php echo esc_attr( $this->get_options_name() ); ?>[pdfemb_disablerightclick]' id='pdfemb_disablerightclick' class='checkbox' <?php checked( boolval( $options['pdfemb_disablerightclick'] ), 1 ); ?> />
+					<label for="pdfemb_disablerightclick" class="checkbox plain"><?php esc_html_e( 'Disable right-click mouse menu (affects secure PDFs only)', 'pdf-embedder' ); ?></label>
+			</span>
+
+			<br class="clear" />
+
+			<label for="pdfemb_cacheencrypted" class="textinput"><?php esc_html_e( 'Cache Encrypted PDFs', 'pdf-embedder' ); ?></label>
+			<span>
+					<input type="checkbox" name='<?php echo esc_attr( $this->get_options_name() ); ?>[pdfemb_cacheencrypted]' id='pdfemb_cacheencrypted' class='checkbox' <?php checked( boolval( $options['pdfemb_cacheencrypted'] ), 1 ); ?> />
+					<label for="pdfemb_cacheencrypted" class="checkbox plain"><?php esc_html_e( 'Cache encrypted versions of secure PDFs on the server (increase download speed)', 'pdf-embedder' ); ?></label>
+			</span>
+
+			<br class="clear" />
+
+			<label for="pdfemb_secureattpages" class="textinput"><?php esc_html_e( 'Attachment Pages', 'pdf-embedder' ); ?></label>
+			<span>
+					<input type="checkbox" name='<?php echo esc_attr( $this->get_options_name() ); ?>[pdfemb_secureattpages]' id='pdfemb_secureattpages' class='checkbox' <?php checked( boolval( $options['pdfemb_secureattpages'] ), 1 ); ?> />
+					<label for="pdfemb_secureattpages" class="checkbox plain"><?php esc_html_e( 'Auto-generate Attachment Pages for Secure PDFs', 'pdf-embedder' ); ?></label>
+			</span>
+
+			<br class="clear" />
+			<br class="clear" />
+
+			<h2><?php esc_html_e( 'Watermark', 'pdf-embedder' ); ?></h2>
+
+			<label for="pdfemb_wm_text" class="textinput"><?php esc_html_e( 'Text to display on secure PDFs', 'pdf-embedder' ); ?></label>
+			<textarea id='pdfemb_wm_text' class='textinput' name='<?php echo esc_attr( $this->get_options_name() ); ?>[pdfemb_wm_text]'><?php echo wp_kses_post( htmlentities( $options['pdfemb_wm_text'] ) ); ?></textarea>
+			<br class="clear"/>
+
+			<p class="desc big"><i><?php esc_html_e( 'Leave blank for no watermark on secure PDFs.', 'pdf-embedder' ); ?>
+			<br /><?php esc_html_e( 'Variables you can use in the text (from a logged in user, otherwise will be blank): {fullname}, {username}, {email}', 'pdf-embedder' ); ?></i></p>
+
+			<label for="pdfemb_wm_halign" class="textinput"><?php esc_html_e( 'Horizontal alignment', 'pdf-embedder' ); ?></label>
+			<select name='<?php echo esc_attr( $this->get_options_name() ); ?>[pdfemb_wm_halign]' id='pdfemb_wm_halign' class='select'>
+				<option value="left" <?php echo 'left' === $options['pdfemb_wm_halign'] ? 'selected' : ''; ?>><?php esc_html_e( 'Left', 'pdf-embedder' ); ?></option>
+				<option value="center" <?php echo 'center' === $options['pdfemb_wm_halign'] ? 'selected' : ''; ?>><?php esc_html_e( 'Center', 'pdf-embedder' ); ?></option>
+				<option value="right" <?php echo 'right' === $options['pdfemb_wm_halign'] ? 'selected' : ''; ?>><?php esc_html_e( 'Right', 'pdf-embedder' ); ?></option>
+			</select>
+
+			<br class="clear"/>
+
+			<label for="pdfemb_wm_voffset" class="textinput"><?php esc_html_e( 'Vertical offset (%)', 'pdf-embedder' ); ?></label>
+			<input id='pdfemb_wm_voffset' class='textinput' name='<?php echo esc_attr( $this->get_options_name() ); ?>[pdfemb_wm_voffset]' size='10' type='text' value='<?php echo esc_attr( $options['pdfemb_wm_voffset'] ); ?>' />
+
+			<br class="clear"/>
+
+			<label for="pdfemb_wm_fontsize" class="textinput"><?php esc_html_e( 'Font Size (pt)', 'pdf-embedder' ); ?></label>
+			<input id='pdfemb_wm_fontsize' class='textinput' name='<?php echo esc_attr( $this->get_options_name() ); ?>[pdfemb_wm_fontsize]' size='10' type='text' value='<?php echo esc_attr( $options['pdfemb_wm_fontsize'] ); ?>' />
+
+			<br class="clear"/>
+
+			<label for="pdfemb_wm_opacity" class="textinput"><?php esc_html_e( 'Opacity (%)', 'pdf-embedder' ); ?></label>
+			<input id='pdfemb_wm_opacity' class='textinput' name='<?php echo esc_attr( $this->get_options_name() ); ?>[pdfemb_wm_opacity]' size='10' type='text' value='<?php echo esc_attr( $options['pdfemb_wm_opacity'] ); ?>' />
+
+			<br class="clear"/>
+
+			<label for="pdfemb_wm_rotate" class="textinput"><?php esc_html_e( 'Rotation (degrees)', 'pdf-embedder' ); ?></label>
+			<input id='pdfemb_wm_rotate' class='textinput' name='<?php echo esc_attr( $this->get_options_name() ); ?>[pdfemb_wm_rotate]' size='10' type='text' value='<?php echo esc_attr( $options['pdfemb_wm_rotate'] ); ?>' />
+
+			<br class="clear"/>
+
+			<label for="pdfemb_wm_evenpages" class="textinput"><?php esc_html_e( 'Page Display', 'pdf-embedder' ); ?></label>
+			<span>
+					<input type="checkbox" name='<?php echo esc_attr( $this->get_options_name() ); ?>[pdfemb_wm_evenpages]' id='pdfemb_wm_evenpages' class='checkbox' <?php echo $options['pdfemb_wm_evenpages'] ? 'checked' : ''; ?> />
+					<label for="pdfemb_wm_evenpages" class="checkbox plain"><?php esc_html_e( 'Show only on even page numbers', 'pdf-embedder' ); ?></label>
+			</span>
+
+			<br class="clear"/>
+			<br class="clear"/>
+
+			<hr />
+
+			<p>
+			<?php
+			esc_html_e(
+				"If 'Secure PDFs' is checked above, your PDF uploads will be 'secure' by default.
+               That is, they should be uploaded to a 'securepdfs' sub-folder of your uploads area. These files should not be accessible directly,
+               and the plugin provides a backdoor method for the embedded viewer to obtain the file contents.",
+				'pdf-embedder'
+			);
+			?>
+				</p>
+
+			<p>
+			<?php
+			esc_html_e(
+				'This means that your PDF is unlikely to be shared outside your site where you have no control over who views, prints, or shares it.
+               Please note that it is still always possible for a determined user to obtain the original file. Sensitive information should never be presented to viewers in any form.',
+				'pdf-embedder'
+			);
+			?>
+				</p>
+
+			<p><?php esc_html_e( 'See <a href="http://wp-pdf.com/secure-instructions/?utm_source=PDF%20Settings%20Secure&utm_medium=premium&utm_campaign=Premium" target="_blank">Instructions</a> for more details.', 'pdf-embedder' ); ?></p>
+
+			<?php
+		}
+
+		/**
+		 * Helper method to get eddsl option name.
+		 *
+		 * @return string
+		 */
+		protected function get_eddsl_optname() {
+			return 'eddsl_pdfemb_secure_ls';
+		}
+
+		/**
+		 * Hellper Method to get default options.
+		 *
+		 * @return array
+		 */
+		protected function get_default_options() {
+			return array_merge(
+				parent::get_default_options(),
+				array(
+					'pdfemb_download'          => 'off',
+					'pdfemb_secure'            => true,
+					'pdfemb_disablerightclick' => 'off',
+					'pdfemb_secureattpages'    => false,
+					'pdfemb_cacheencrypted'    => true,
+					'pdfemb_wm_text'           => '',
+					'pdfemb_wm_halign'         => 'center',
+					'pdfemb_wm_voffset'        => '30',
+					'pdfemb_wm_fontsize'       => '20',
+					'pdfemb_wm_opacity'        => '20',
+					'pdfemb_wm_rotate'         => '35',
+					'pdfemb_wm_evenpages'      => false,
+				)
+			);
+		}
+
+		/**
+		 * Helper Method ti vakudate iotuib
+		 *
+		 * @param mixed $input Option input.
+		 * @return array
+		 */
+		public function pdfemb_options_validate( $input ) {
+			$newinput = parent::pdfemb_options_validate( $input );
+
+			$newinput['pdfemb_secure']            = isset( $input['pdfemb_secure'] ) && ( true === $input['pdfemb_secure'] || 'on' === $input['pdfemb_secure'] );
+			$newinput['pdfemb_disablerightclick'] = isset( $input['pdfemb_disablerightclick'] ) && ( true === $input['pdfemb_disablerightclick'] || 'on' === $input['pdfemb_disablerightclick'] );
+
+			$newinput['pdfemb_cacheencrypted'] = isset( $input['pdfemb_cacheencrypted'] ) && ( true === $input['pdfemb_cacheencrypted'] || 'on' === $input['pdfemb_cacheencrypted'] );
+
+			$newinput['pdfemb_secureattpages'] = isset( $input['pdfemb_secureattpages'] ) && ( true === $input['pdfemb_secureattpages'] || 'on' === $input['pdfemb_secureattpages'] );
+
+			$newinput['pdfemb_wm_text'] = isset( $input['pdfemb_wm_text'] ) && ! preg_match( '/^[\n\r ]+$/', $input['pdfemb_wm_text'] ) ? $input['pdfemb_wm_text'] : '';
+
+			if ( isset( $input['pdfemb_wm_halign'] ) && in_array( $input['pdfemb_wm_halign'], array( 'left', 'center', 'right' ), true ) ) {
+				$newinput['pdfemb_wm_halign'] = $input['pdfemb_wm_halign'];
+			} else {
+				$newinput['pdfemb_wm_halign'] = 'center';
+			}
+
+			$newinput['pdfemb_wm_voffset'] = isset( $input['pdfemb_wm_voffset'] ) ? $input['pdfemb_wm_voffset'] : '5';
+			if ( ! is_numeric( $newinput['pdfemb_wm_voffset'] ) ) {
+				add_settings_error(
+					'pdfemb_wm_voffset',
+					'notnumeric',
+					self::get_error_string( 'pdfemb_wm_voffset|notnumeric' ),
+					'error'
+				);
+			}
+
+			$newinput['pdfemb_wm_fontsize'] = isset( $input['pdfemb_wm_fontsize'] ) ? $input['pdfemb_wm_fontsize'] : '20';
+			if ( ! is_numeric( $newinput['pdfemb_wm_fontsize'] ) ) {
+				add_settings_error(
+					'pdfemb_wm_fontsize',
+					'notnumeric',
+					self::get_error_string( 'pdfemb_wm_fontsize|notnumeric' ),
+					'error'
+				);
+			}
+
+			$newinput['pdfemb_wm_opacity'] = isset( $input['pdfemb_wm_opacity'] ) ? $input['pdfemb_wm_opacity'] : '20';
+			if ( ! is_numeric( $newinput['pdfemb_wm_opacity'] ) ) {
+				add_settings_error(
+					'pdfemb_wm_opacity',
+					'notnumeric',
+					self::get_error_string( 'pdfemb_wm_opacity|notnumeric' ),
+					'error'
+				);
+			}
+
+			$newinput['pdfemb_wm_rotate'] = isset( $input['pdfemb_wm_rotate'] ) ? $input['pdfemb_wm_rotate'] : '35';
+			if ( ! is_numeric( $newinput['pdfemb_wm_rotate'] ) ) {
+				add_settings_error(
+					'pdfemb_wm_rotate',
+					'notnumeric',
+					self::get_error_string( 'pdfemb_wm_rotate|notnumeric' ),
+					'error'
+				);
+			}
+
+			$newinput['pdfemb_wm_evenpages'] = isset( $input['pdfemb_wm_evenpages'] ) && ( true === $input['pdfemb_wm_evenpages'] || 'on' === $input['pdfemb_wm_evenpages'] );
+
+			return $newinput;
+		}
+
+		/**
+		 * Helper Method to get string errods
+		 *
+		 * @param string $fielderror Field Error.
+		 * @return string
+		 */
+		protected function get_error_string( $fielderror ) {
+			$secure_local_error_strings = array(
+				'pdfemb_wm_voffset|notnumeric'  => __( 'Watermark Vertical offset should be a numerical value between 0 and 100', 'pdf-embedder' ),
+				'pdfemb_wm_fontsize|notnumeric' => __( 'Font Size should be a numerical value', 'pdf-embedder' ),
+				'pdfemb_wm_opacity|notnumeric'  => __( 'Watermark Opacity should be a numerical value between 0 and 100', 'pdf-embedder' ),
+				'pdfemb_wm_rotate|notnumeric'   => __( 'Watermark Rotation should be a numerical value in degrees (0 to 360)', 'pdf-embedder' ),
+			);
+			if ( isset( $secure_local_error_strings[ $fielderror ] ) ) {
+				return $secure_local_error_strings[ $fielderror ];
+			}
+			return parent::get_error_string( $fielderror );
+		}
+
+		/**
+		 * Helper Method to get direct link
+		 *
+		 * @param array  $atts Attributes.
+		 * @param string $content Content.
+		 * @return string
+		 */
+		public function pdfemb_shortcode_direct_link( $atts, $content = null ) {
+			if ( ! isset( $atts['url'] ) ) {
+				return '<b>pdf-direct-link requires a url attribute</b>';
+			}
+
+			$url = $this->pdfth_pdf_direct_download_url( set_url_scheme( $atts['url'] ) );
+
+			$innerhtml = '';
+			if ( ! empty( $content ) ) {
+				$innerhtml = do_shortcode( $content );
+			}
+
+			if ( strlen( $innerhtml ) === 0 ) {
+				$innerhtml = isset( $atts['text'] ) ? $atts['text'] : $atts['url'];
+			}
+
+			$returnhtml = '<a href="' . esc_attr( $url ) . '">' . $innerhtml . '</a>';
+
+			return $returnhtml;
+		}
+		/**
+		 * Undocumented function
+		 *
+		 * @return void
+		 */
+		protected function add_actions() {
+			parent::add_actions();
+
+			add_shortcode( 'pdf-direct-link', array( $this, 'pdfemb_shortcode_direct_link' ) );
+		}
+
+		/**
+		 * Helper Method to get basename
+		 *
+		 * @return string
+		 */
+		protected function pdf_plugin_basename() {
+			$basename = plugin_basename( __FILE__ );
+			if ( __FILE__ === '/' . $basename ) { // Maybe due to symlink.
+				$basename = basename( dirname( __FILE__ ) ) . '/' . basename( __FILE__ );
+			}
+			return $basename;
+		}
+		/**
+		 * Helper Method to get plugin url
+		 *
+		 * @return string
+		 */
+		protected function pdf_plugin_url() {
+			$basename = plugin_basename( __FILE__ );
+
+			if ( __FILE__ === '/' . $basename ) { // Maybe due to symlink.
+				return plugins_url() . '/' . basename( dirname( __FILE__ ) ) . '/';
+			}
+
+			// Normal case (non symlink).
+			return plugin_dir_url( __FILE__ );
+		}
+
+		/**
+		 * Helper method to include files.
+		 *
+		 * @since 4.6.5
+		 *
+		 * @return void
+		 */
+		public function includes() {
+			require_once plugin_dir_path( __FILE__ ) . '/core/review.php';
+		}
+
+		/**
+		 * Helper to define
+		 *
+		 * @param string $name Define Name.
+		 * @param mixed  $value Value.
+		 * @return void
+		 */
+		public function define( $name, $value ) {
+
+			if ( ! defined( $name ) ) {
+				define( $name, $value );
+			}
+		}
+
+		/**
+		 * Setup Globals.
+		 *
+		 * @return void
+		 */
+		public function setup_globals() {
+			$this->define( 'WP_PDF_VERSION', $this->plugin_version );
+			$this->define( 'WP_PDF_SECURE_FILE', $this->file );
+			$this->define( 'WP_PDF_SECURE_DIR', plugin_dir_path( __FILE__ ) );
+			$this->define( 'WP_PDF_SECURE_URL', plugin_dir_url( __FILE__ ) );
+		}
+
+		/**
+		 * Undocumented function
+		 *
+		 * @return object
+		 */
+		public static function get_instance() {
+			if ( null === self::$instance ) {
+				self::$instance = new self();
+				self::$instance->setup_globals();
+				self::$instance->includes();
+			}
+
+			return self::$instance;
+		}
+	}
+
+	/**
+	 * Singleton Instance
+	 *
+	 * @return WP_PDF_Secure
+	 */
+	function init_pdf_emb_secure() {
+		return WP_PDF_Secure::get_instance();
+	}
+
+	// Initialise at least once.
+	init_pdf_emb_secure();
+
+}