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wp-mail.php (8509B)


      1 <?php
      2 /**
      3  * Gets the email message from the user's mailbox to add as
      4  * a WordPress post. Mailbox connection information must be
      5  * configured under Settings > Writing
      6  *
      7  * @package WordPress
      8  */
      9 
     10 /** Make sure that the WordPress bootstrap has run before continuing. */
     11 require __DIR__ . '/wp-load.php';
     12 
     13 /** This filter is documented in wp-admin/options.php */
     14 if ( ! apply_filters( 'enable_post_by_email_configuration', true ) ) {
     15 	wp_die( __( 'This action has been disabled by the administrator.' ), 403 );
     16 }
     17 
     18 $mailserver_url = get_option( 'mailserver_url' );
     19 
     20 if ( 'mail.example.com' === $mailserver_url || empty( $mailserver_url ) ) {
     21 	wp_die( __( 'This action has been disabled by the administrator.' ), 403 );
     22 }
     23 
     24 /**
     25  * Fires to allow a plugin to do a complete takeover of Post by Email.
     26  *
     27  * @since 2.9.0
     28  */
     29 do_action( 'wp-mail.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
     30 
     31 /** Get the POP3 class with which to access the mailbox. */
     32 require_once ABSPATH . WPINC . '/class-pop3.php';
     33 
     34 /** Only check at this interval for new messages. */
     35 if ( ! defined( 'WP_MAIL_INTERVAL' ) ) {
     36 	define( 'WP_MAIL_INTERVAL', 5 * MINUTE_IN_SECONDS );
     37 }
     38 
     39 $last_checked = get_transient( 'mailserver_last_checked' );
     40 
     41 if ( $last_checked ) {
     42 	wp_die( __( 'Slow down cowboy, no need to check for new mails so often!' ) );
     43 }
     44 
     45 set_transient( 'mailserver_last_checked', true, WP_MAIL_INTERVAL );
     46 
     47 $time_difference = get_option( 'gmt_offset' ) * HOUR_IN_SECONDS;
     48 
     49 $phone_delim = '::';
     50 
     51 $pop3 = new POP3();
     52 
     53 if ( ! $pop3->connect( get_option( 'mailserver_url' ), get_option( 'mailserver_port' ) ) || ! $pop3->user( get_option( 'mailserver_login' ) ) ) {
     54 	wp_die( esc_html( $pop3->ERROR ) );
     55 }
     56 
     57 $count = $pop3->pass( get_option( 'mailserver_pass' ) );
     58 
     59 if ( false === $count ) {
     60 	wp_die( esc_html( $pop3->ERROR ) );
     61 }
     62 
     63 if ( 0 === $count ) {
     64 	$pop3->quit();
     65 	wp_die( __( 'There doesn&#8217;t seem to be any new mail.' ) );
     66 }
     67 
     68 for ( $i = 1; $i <= $count; $i++ ) {
     69 
     70 	$message = $pop3->get( $i );
     71 
     72 	$bodysignal                = false;
     73 	$boundary                  = '';
     74 	$charset                   = '';
     75 	$content                   = '';
     76 	$content_type              = '';
     77 	$content_transfer_encoding = '';
     78 	$post_author               = 1;
     79 	$author_found              = false;
     80 	foreach ( $message as $line ) {
     81 		// Body signal.
     82 		if ( strlen( $line ) < 3 ) {
     83 			$bodysignal = true;
     84 		}
     85 		if ( $bodysignal ) {
     86 			$content .= $line;
     87 		} else {
     88 			if ( preg_match( '/Content-Type: /i', $line ) ) {
     89 				$content_type = trim( $line );
     90 				$content_type = substr( $content_type, 14, strlen( $content_type ) - 14 );
     91 				$content_type = explode( ';', $content_type );
     92 				if ( ! empty( $content_type[1] ) ) {
     93 					$charset = explode( '=', $content_type[1] );
     94 					$charset = ( ! empty( $charset[1] ) ) ? trim( $charset[1] ) : '';
     95 				}
     96 				$content_type = $content_type[0];
     97 			}
     98 			if ( preg_match( '/Content-Transfer-Encoding: /i', $line ) ) {
     99 				$content_transfer_encoding = trim( $line );
    100 				$content_transfer_encoding = substr( $content_transfer_encoding, 27, strlen( $content_transfer_encoding ) - 27 );
    101 				$content_transfer_encoding = explode( ';', $content_transfer_encoding );
    102 				$content_transfer_encoding = $content_transfer_encoding[0];
    103 			}
    104 			if ( ( 'multipart/alternative' === $content_type ) && ( false !== strpos( $line, 'boundary="' ) ) && ( '' === $boundary ) ) {
    105 				$boundary = trim( $line );
    106 				$boundary = explode( '"', $boundary );
    107 				$boundary = $boundary[1];
    108 			}
    109 			if ( preg_match( '/Subject: /i', $line ) ) {
    110 				$subject = trim( $line );
    111 				$subject = substr( $subject, 9, strlen( $subject ) - 9 );
    112 				// Captures any text in the subject before $phone_delim as the subject.
    113 				if ( function_exists( 'iconv_mime_decode' ) ) {
    114 					$subject = iconv_mime_decode( $subject, 2, get_option( 'blog_charset' ) );
    115 				} else {
    116 					$subject = wp_iso_descrambler( $subject );
    117 				}
    118 				$subject = explode( $phone_delim, $subject );
    119 				$subject = $subject[0];
    120 			}
    121 
    122 			/*
    123 			 * Set the author using the email address (From or Reply-To, the last used)
    124 			 * otherwise use the site admin.
    125 			 */
    126 			if ( ! $author_found && preg_match( '/^(From|Reply-To): /', $line ) ) {
    127 				if ( preg_match( '|[a-z0-9_.-]+@[a-z0-9_.-]+(?!.*<)|i', $line, $matches ) ) {
    128 					$author = $matches[0];
    129 				} else {
    130 					$author = trim( $line );
    131 				}
    132 				$author = sanitize_email( $author );
    133 				if ( is_email( $author ) ) {
    134 					/* translators: %s: Post author email address. */
    135 					echo '<p>' . sprintf( __( 'Author is %s' ), $author ) . '</p>';
    136 					$userdata = get_user_by( 'email', $author );
    137 					if ( ! empty( $userdata ) ) {
    138 						$post_author  = $userdata->ID;
    139 						$author_found = true;
    140 					}
    141 				}
    142 			}
    143 
    144 			if ( preg_match( '/Date: /i', $line ) ) { // Of the form '20 Mar 2002 20:32:37 +0100'.
    145 				$ddate = str_replace( 'Date: ', '', trim( $line ) );
    146 				// Remove parenthesised timezone string if it exists, as this confuses strtotime().
    147 				$ddate           = preg_replace( '!\s*\(.+\)\s*$!', '', $ddate );
    148 				$ddate_timestamp = strtotime( $ddate );
    149 				$post_date       = gmdate( 'Y-m-d H:i:s', $ddate_timestamp + $time_difference );
    150 				$post_date_gmt   = gmdate( 'Y-m-d H:i:s', $ddate_timestamp );
    151 			}
    152 		}
    153 	}
    154 
    155 	// Set $post_status based on $author_found and on author's publish_posts capability.
    156 	if ( $author_found ) {
    157 		$user        = new WP_User( $post_author );
    158 		$post_status = ( $user->has_cap( 'publish_posts' ) ) ? 'publish' : 'pending';
    159 	} else {
    160 		// Author not found in DB, set status to pending. Author already set to admin.
    161 		$post_status = 'pending';
    162 	}
    163 
    164 	$subject = trim( $subject );
    165 
    166 	if ( 'multipart/alternative' === $content_type ) {
    167 		$content = explode( '--' . $boundary, $content );
    168 		$content = $content[2];
    169 
    170 		// Match case-insensitive content-transfer-encoding.
    171 		if ( preg_match( '/Content-Transfer-Encoding: quoted-printable/i', $content, $delim ) ) {
    172 			$content = explode( $delim[0], $content );
    173 			$content = $content[1];
    174 		}
    175 		$content = strip_tags( $content, '<img><p><br><i><b><u><em><strong><strike><font><span><div>' );
    176 	}
    177 	$content = trim( $content );
    178 
    179 	/**
    180 	 * Filters the original content of the email.
    181 	 *
    182 	 * Give Post-By-Email extending plugins full access to the content, either
    183 	 * the raw content, or the content of the last quoted-printable section.
    184 	 *
    185 	 * @since 2.8.0
    186 	 *
    187 	 * @param string $content The original email content.
    188 	 */
    189 	$content = apply_filters( 'wp_mail_original_content', $content );
    190 
    191 	if ( false !== stripos( $content_transfer_encoding, 'quoted-printable' ) ) {
    192 		$content = quoted_printable_decode( $content );
    193 	}
    194 
    195 	if ( function_exists( 'iconv' ) && ! empty( $charset ) ) {
    196 		$content = iconv( $charset, get_option( 'blog_charset' ), $content );
    197 	}
    198 
    199 	// Captures any text in the body after $phone_delim as the body.
    200 	$content = explode( $phone_delim, $content );
    201 	$content = empty( $content[1] ) ? $content[0] : $content[1];
    202 
    203 	$content = trim( $content );
    204 
    205 	/**
    206 	 * Filters the content of the post submitted by email before saving.
    207 	 *
    208 	 * @since 1.2.0
    209 	 *
    210 	 * @param string $content The email content.
    211 	 */
    212 	$post_content = apply_filters( 'phone_content', $content );
    213 
    214 	$post_title = xmlrpc_getposttitle( $content );
    215 
    216 	if ( '' === trim( $post_title ) ) {
    217 		$post_title = $subject;
    218 	}
    219 
    220 	$post_category = array( get_option( 'default_email_category' ) );
    221 
    222 	$post_data = compact( 'post_content', 'post_title', 'post_date', 'post_date_gmt', 'post_author', 'post_category', 'post_status' );
    223 	$post_data = wp_slash( $post_data );
    224 
    225 	$post_ID = wp_insert_post( $post_data );
    226 	if ( is_wp_error( $post_ID ) ) {
    227 		echo "\n" . $post_ID->get_error_message();
    228 	}
    229 
    230 	// We couldn't post, for whatever reason. Better move forward to the next email.
    231 	if ( empty( $post_ID ) ) {
    232 		continue;
    233 	}
    234 
    235 	/**
    236 	 * Fires after a post submitted by email is published.
    237 	 *
    238 	 * @since 1.2.0
    239 	 *
    240 	 * @param int $post_ID The post ID.
    241 	 */
    242 	do_action( 'publish_phone', $post_ID );
    243 
    244 	echo "\n<p><strong>" . __( 'Author:' ) . '</strong> ' . esc_html( $post_author ) . '</p>';
    245 	echo "\n<p><strong>" . __( 'Posted title:' ) . '</strong> ' . esc_html( $post_title ) . '</p>';
    246 
    247 	if ( ! $pop3->delete( $i ) ) {
    248 		echo '<p>' . sprintf(
    249 			/* translators: %s: POP3 error. */
    250 			__( 'Oops: %s' ),
    251 			esc_html( $pop3->ERROR )
    252 		) . '</p>';
    253 		$pop3->reset();
    254 		exit;
    255 	} else {
    256 		echo '<p>' . sprintf(
    257 			/* translators: %s: The message ID. */
    258 			__( 'Mission complete. Message %s deleted.' ),
    259 			'<strong>' . $i . '</strong>'
    260 		) . '</p>';
    261 	}
    262 }
    263 
    264 $pop3->quit();