From 6008e3df111c722e6f2e01be81d197fed33dfd42 Mon Sep 17 00:00:00 2001
From: Adam Magness <adam.magness@gmail.com>
Date: Fri, 1 Dec 2017 14:41:27 -0500
Subject: [PATCH] Email to src

Create Email class and update/rename functions and function calls.
---
 include/dbstructure.php |   2 +-
 include/email.php       | 317 --------------------------------------
 mod/invite.php          |   5 +-
 mod/item.php            |   6 +-
 mod/settings.php        |   7 +-
 src/Network/Probe.php   |  10 +-
 src/Protocol/Email.php  | 333 ++++++++++++++++++++++++++++++++++++++++
 src/Util/Emailer.php    |   7 +-
 src/Worker/Delivery.php |  18 +--
 src/Worker/OnePoll.php  |  20 +--
 10 files changed, 370 insertions(+), 355 deletions(-)
 delete mode 100644 include/email.php
 create mode 100644 src/Protocol/Email.php

diff --git a/include/dbstructure.php b/include/dbstructure.php
index dde3dc6f18..05b2bc07cc 100644
--- a/include/dbstructure.php
+++ b/include/dbstructure.php
@@ -95,7 +95,7 @@ function update_fail($update_id, $error_message) {
 	));
 	$subject=sprintf(t('Update Error at %s'), System::baseUrl());
 	require_once('include/email.php');
-	$subject = email_header_encode($subject,'UTF-8');
+	$subject = Email::emailHeaderEncode($subject,'UTF-8');
 	mail($a->config['admin_email'], $subject, $email_msg,
 		'From: ' . 'Administrator' . '@' . $_SERVER['SERVER_NAME']."\n"
 		.'Content-type: text/plain; charset=UTF-8'."\n"
diff --git a/include/email.php b/include/email.php
deleted file mode 100644
index b3bd52a668..0000000000
--- a/include/email.php
+++ /dev/null
@@ -1,317 +0,0 @@
-<?php
-require_once('include/html2plain.php');
-require_once('include/msgclean.php');
-require_once('include/quoteconvert.php');
-
-function email_connect($mailbox,$username,$password) {
-	if (! function_exists('imap_open'))
-		return false;
-
-	$mbox = @imap_open($mailbox,$username,$password);
-
-	return $mbox;
-}
-
-function email_poll($mbox,$email_addr) {
-
-	if (! ($mbox && $email_addr))
-		return array();
-
-	$search1 = @imap_search($mbox,'FROM "' . $email_addr . '"', SE_UID);
-	if (!$search1) {
-		$search1 = array();
-	} else {
-		logger("Found mails from ".$email_addr, LOGGER_DEBUG);
-	}
-
-	$search2 = @imap_search($mbox,'TO "' . $email_addr . '"', SE_UID);
-	if (!$search2) {
-		$search2 = array();
-	} else {
-		logger("Found mails to ".$email_addr, LOGGER_DEBUG);
-	}
-
-	$search3 = @imap_search($mbox,'CC "' . $email_addr . '"', SE_UID);
-	if (!$search3) {
-		$search3 = array();
-	} else {
-		logger("Found mails cc ".$email_addr, LOGGER_DEBUG);
-	}
-
-	$res = array_unique(array_merge($search1, $search2, $search3));
-
-	return $res;
-}
-
-
-function construct_mailbox_name($mailacct) {
-	$ret = '{' . $mailacct['server'] . ((intval($mailacct['port'])) ? ':' . $mailacct['port'] : '');
-	$ret .= (($mailacct['ssltype']) ?  '/' . $mailacct['ssltype'] . '/novalidate-cert' : '');
-	$ret .= '}' . $mailacct['mailbox'];
-	return $ret;
-}
-
-
-function email_msg_meta($mbox,$uid) {
-	$ret = (($mbox && $uid) ? @imap_fetch_overview($mbox,$uid,FT_UID) : array(array())); // POSSIBLE CLEANUP --> array(array()) is probably redundant now
-	return ((count($ret)) ? $ret : array());
-}
-
-function email_msg_headers($mbox,$uid) {
-	$raw_header = (($mbox && $uid) ? @imap_fetchheader($mbox,$uid,FT_UID) : '');
-	$raw_header = str_replace("\r",'',$raw_header);
-	$ret = array();
-	$h = explode("\n",$raw_header);
-	if (count($h))
-	foreach ($h as $line ) {
-	    if (preg_match("/^[a-zA-Z]/", $line)) {
-			$key = substr($line,0,strpos($line,':'));
-			$value = substr($line,strpos($line,':')+1);
-
-			$last_entry = strtolower($key);
-			$ret[$last_entry] = trim($value);
-		}
-		else {
-			$ret[$last_entry] .= ' ' . trim($line);
-    	}
-	}
-	return $ret;
-}
-
-
-function email_get_msg($mbox,$uid, $reply) {
-	$ret = array();
-
-	$struc = (($mbox && $uid) ? @imap_fetchstructure($mbox,$uid,FT_UID) : null);
-
-	if (! $struc)
-		return $ret;
-
-	if (! $struc->parts) {
-		$ret['body'] = email_get_part($mbox,$uid,$struc,0, 'html');
-		$html = $ret['body'];
-
-		if (trim($ret['body']) == '')
-			$ret['body'] = email_get_part($mbox,$uid,$struc,0, 'plain');
-		else
-			$ret['body'] = html2bbcode($ret['body']);
-	}
-	else {
-		$text = '';
-		$html = '';
-		foreach ($struc->parts as $ptop => $p) {
-			$x = email_get_part($mbox,$uid,$p,$ptop + 1, 'plain');
-			if ($x) {
-				$text .= $x;
-			}
-
-			$x = email_get_part($mbox,$uid,$p,$ptop + 1, 'html');
-			if ($x) {
-				$html .= $x;
-			}
-		}
-		if (trim($html) != '') {
-			$ret['body'] = html2bbcode($html);
-		} else {
-			$ret['body'] = $text;
-		}
-	}
-
-	$ret['body'] = removegpg($ret['body']);
-	$msg = removesig($ret['body']);
-	$ret['body'] = $msg['body'];
-	$ret['body'] = convertquote($ret['body'], $reply);
-
-	if (trim($html) != '') {
-		$ret['body'] = removelinebreak($ret['body']);
-	}
-
-	$ret['body'] = unifyattributionline($ret['body']);
-
-	return $ret;
-}
-
-// At the moment - only return plain/text.
-// Later we'll repackage inline images as data url's and make the HTML safe
-
-function email_get_part($mbox,$uid,$p,$partno, $subtype) {
-	// $partno = '1', '2', '2.1', '2.1.3', etc for multipart, 0 if simple
-	global $htmlmsg,$plainmsg,$charset,$attachments;
-
-	//echo $partno."\n";
-
-	// DECODE DATA
-	$data = ($partno)
-		? @imap_fetchbody($mbox,$uid,$partno, FT_UID|FT_PEEK)
-	: @imap_body($mbox,$uid,FT_UID|FT_PEEK);
-
-	// Any part may be encoded, even plain text messages, so check everything.
-	if ($p->encoding==4)
-		$data = quoted_printable_decode($data);
-	elseif ($p->encoding==3)
-		$data = base64_decode($data);
-
-	// PARAMETERS
-	// get all parameters, like charset, filenames of attachments, etc.
-	$params = array();
-	if ($p->parameters)
-		foreach ($p->parameters as $x)
-			$params[strtolower($x->attribute)] = $x->value;
-	if (isset($p->dparameters) && $p->dparameters)
-		foreach ($p->dparameters as $x)
-			$params[strtolower($x->attribute)] = $x->value;
-
-	// ATTACHMENT
-	// Any part with a filename is an attachment,
-	// so an attached text file (type 0) is not mistaken as the message.
-
-	if ((isset($params['filename']) && $params['filename']) || (isset($params['name']) && $params['name'])) {
-		// filename may be given as 'Filename' or 'Name' or both
-		$filename = ($params['filename'])? $params['filename'] : $params['name'];
-		// filename may be encoded, so see imap_mime_header_decode()
-		$attachments[$filename] = $data;  // this is a problem if two files have same name
-	}
-
-	// TEXT
-	if ($p->type == 0 && $data) {
-		// Messages may be split in different parts because of inline attachments,
-		// so append parts together with blank row.
-		if (strtolower($p->subtype)==$subtype) {
-			$data = iconv($params['charset'], 'UTF-8//IGNORE', $data);
-			return (trim($data) ."\n\n");
-		} else
-			$data = '';
-
- //           $htmlmsg .= $data ."<br><br>";
-		$charset = $params['charset'];  // assume all parts are same charset
-	}
-
-	// EMBEDDED MESSAGE
-	// Many bounce notifications embed the original message as type 2,
-	// but AOL uses type 1 (multipart), which is not handled here.
-	// There are no PHP functions to parse embedded messages,
-	// so this just appends the raw source to the main message.
-//	elseif ($p->type==2 && $data) {
-//		$plainmsg .= $data."\n\n";
-//	}
-
-	// SUBPART RECURSION
-	if (isset($p->parts) && $p->parts) {
-		$x = "";
-		foreach ($p->parts as $partno0=>$p2) {
-			$x .=  email_get_part($mbox,$uid,$p2,$partno . '.' . ($partno0+1), $subtype);  // 1.2, 1.2.1, etc.
-			//if ($x) {
-			//	return $x;
-			//}
-		}
-		return $x;
-	}
-}
-
-
-
-function email_header_encode($in_str, $charset) {
-	$out_str = $in_str;
-	$need_to_convert = false;
-
-	for ($x = 0; $x < strlen($in_str); $x ++) {
-		if ((ord($in_str[$x]) == 0) || ((ord($in_str[$x]) > 128))) {
-			$need_to_convert = true;
-		}
-	}
-
-	if (! $need_to_convert)
-		return $in_str;
-
-    if ($out_str && $charset) {
-
-        // define start delimimter, end delimiter and spacer
-        $end = "?=";
-        $start = "=?" . $charset . "?B?";
-        $spacer = $end . "\r\n " . $start;
-
-        // determine length of encoded text within chunks
-        // and ensure length is even
-        $length = 75 - strlen($start) - strlen($end);
-
-        /*
-            [EDIT BY danbrown AT php DOT net: The following
-            is a bugfix provided by (gardan AT gmx DOT de)
-            on 31-MAR-2005 with the following note:
-            "This means: $length should not be even,
-            but divisible by 4. The reason is that in
-            base64-encoding 3 8-bit-chars are represented
-            by 4 6-bit-chars. These 4 chars must not be
-            split between two encoded words, according
-            to RFC-2047.
-        */
-        $length = $length - ($length % 4);
-
-        // encode the string and split it into chunks
-        // with spacers after each chunk
-        $out_str = base64_encode($out_str);
-        $out_str = chunk_split($out_str, $length, $spacer);
-
-        // remove trailing spacer and
-        // add start and end delimiters
-        $spacer = preg_quote($spacer,'/');
-        $out_str = preg_replace("/" . $spacer . "$/", "", $out_str);
-        $out_str = $start . $out_str . $end;
-    }
-    return $out_str;
-}
-
-/**
- * email_send is used by NETWORK_EMAIL and NETWORK_EMAIL2 code
- * (not to notify the user, but to send items to email contacts)
- *
- * @todo This could be changed to use the Emailer class
- */
-function email_send($addr, $subject, $headers, $item) {
-	//$headers .= 'MIME-Version: 1.0' . "\n";
-	//$headers .= 'Content-Type: text/html; charset=UTF-8' . "\n";
-	//$headers .= 'Content-Type: text/plain; charset=UTF-8' . "\n";
-	//$headers .= 'Content-Transfer-Encoding: 8bit' . "\n\n";
-
-	$part = uniqid("", true);
-
-	$html    = prepare_body($item);
-
-	$headers .= "Mime-Version: 1.0\n";
-	$headers .= 'Content-Type: multipart/alternative; boundary="=_'.$part.'"'."\n\n";
-
-	$body = "\n--=_".$part."\n";
-	$body .= "Content-Transfer-Encoding: 8bit\n";
-	$body .= "Content-Type: text/plain; charset=utf-8; format=flowed\n\n";
-
-	$body .= html2plain($html)."\n";
-
-	$body .= "--=_".$part."\n";
-	$body .= "Content-Transfer-Encoding: 8bit\n";
-	$body .= "Content-Type: text/html; charset=utf-8\n\n";
-
-	$body .= '<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">'.$html."</body></html>\n";
-
-	$body .= "--=_".$part."--";
-
-	//$message = '<html><body>' . $html . '</body></html>';
-	//$message = html2plain($html);
-	logger('notifier: email delivery to ' . $addr);
-	mail($addr, $subject, $body, $headers);
-}
-
-function iri2msgid($iri) {
-	if (!strpos($iri, "@"))
-		$msgid = preg_replace("/urn:(\S+):(\S+)\.(\S+):(\d+):(\S+)/i", "urn!$1!$4!$5@$2.$3", $iri);
-	else
-		$msgid = $iri;
-	return($msgid);
-}
-
-function msgid2iri($msgid) {
-	if (strpos($msgid, "@"))
-		$iri = preg_replace("/urn!(\S+)!(\d+)!(\S+)@(\S+)\.(\S+)/i", "urn:$1:$4.$5:$2:$3", $msgid);
-	else
-		$iri = $msgid;
-	return($iri);
-}
diff --git a/mod/invite.php b/mod/invite.php
index 4f7abf36a3..eb1ac8860a 100644
--- a/mod/invite.php
+++ b/mod/invite.php
@@ -11,8 +11,7 @@ use Friendica\App;
 use Friendica\Core\Config;
 use Friendica\Core\PConfig;
 use Friendica\Core\System;
-
-require_once('include/email.php');
+use Friendica\Protocol\Email;
 
 function invite_post(App $a) {
 
@@ -78,7 +77,7 @@ function invite_post(App $a) {
 			$nmessage = $message;
 		}
 
-		$res = mail($recip, email_header_encode( t('Please join us on Friendica'),'UTF-8'),
+		$res = mail($recip, Email::emailHeaderEncode(t('Please join us on Friendica'),'UTF-8'),
 			$nmessage,
 			"From: " . $a->user['email'] . "\n"
 			. 'Content-type: text/plain; charset=UTF-8' . "\n"
diff --git a/mod/item.php b/mod/item.php
index fbedcd86ba..97abce0ef6 100644
--- a/mod/item.php
+++ b/mod/item.php
@@ -24,11 +24,11 @@ use Friendica\Model\GlobalContact;
 use Friendica\Network\Probe;
 use Friendica\Object\Contact;
 use Friendica\Protocol\Diaspora;
+use Friendica\Protocol\Email;
 use Friendica\Util\Emailer;
 
 require_once 'include/crypto.php';
 require_once 'include/enotify.php';
-require_once 'include/email.php';
 require_once 'include/tags.php';
 require_once 'include/files.php';
 require_once 'include/threads.php';
@@ -1030,9 +1030,9 @@ function item_post(App $a) {
 				$disclaimer .= sprintf( t('You may visit them online at %s'), System::baseUrl() . '/profile/' . $a->user['nickname']) . EOL;
 				$disclaimer .= t('Please contact the sender by replying to this post if you do not wish to receive these messages.') . EOL;
 				if (!$datarray['title']=='') {
-					$subject = email_header_encode($datarray['title'], 'UTF-8');
+					$subject = Email::emailHeaderEncode($datarray['title'], 'UTF-8');
 				} else {
-					$subject = email_header_encode('[Friendica]' . ' ' . sprintf( t('%s posted an update.'), $a->user['username']), 'UTF-8');
+					$subject = Email::emailHeaderEncode('[Friendica]' . ' ' . sprintf( t('%s posted an update.'), $a->user['username']), 'UTF-8');
 				}
 				$link = '<a href="' . System::baseUrl() . '/profile/' . $a->user['nickname'] . '"><img src="' . $author['thumb'] . '" alt="' . $a->user['username'] . '" /></a><br /><br />';
 				$html    = prepare_body($datarray);
diff --git a/mod/settings.php b/mod/settings.php
index 8ad82b023d..1d7ac91782 100644
--- a/mod/settings.php
+++ b/mod/settings.php
@@ -10,6 +10,7 @@ use Friendica\Core\PConfig;
 use Friendica\Database\DBM;
 use Friendica\Model\GlobalContact;
 use Friendica\Model\User;
+use Friendica\Protocol\Email;
 
 require_once 'include/group.php';
 
@@ -259,12 +260,12 @@ function settings_post(App $a) {
 				);
 				if (DBM::is_result($r)) {
 					$eacct = $r[0];
-					require_once('include/email.php');
-					$mb = construct_mailbox_name($eacct);
+					$mb = Email::constructMailboxName($eacct);
+
 					if (strlen($eacct['server'])) {
 						$dcrpass = '';
 						openssl_private_decrypt(hex2bin($eacct['pass']), $dcrpass, $a->user['prvkey']);
-						$mbox = email_connect($mb, $mail_user, $dcrpass);
+						$mbox = Email::emailConnect($mb, $mail_user, $dcrpass);
 						unset($dcrpass);
 						if (!$mbox) {
 							$failed = true;
diff --git a/src/Network/Probe.php b/src/Network/Probe.php
index 6001489ec7..2216d7dcce 100644
--- a/src/Network/Probe.php
+++ b/src/Network/Probe.php
@@ -15,6 +15,7 @@ use Friendica\Core\Cache;
 use Friendica\Core\Config;
 use Friendica\Database\DBM;
 use Friendica\Object\Profile;
+use Friendica\Protocol\Email;
 use Friendica\Util\XML;
 
 use dba;
@@ -22,7 +23,6 @@ use DomXPath;
 use DOMDocument;
 
 require_once 'include/feed.php';
-require_once 'include/email.php';
 require_once 'include/network.php';
 
 /**
@@ -1517,16 +1517,16 @@ class Probe
 			$r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1", intval($uid));
 
 			if (DBM::is_result($x) && DBM::is_result($r)) {
-				$mailbox = construct_mailbox_name($r[0]);
+				$mailbox = Email::constructMailboxName($r[0]);
 				$password = '';
 				openssl_private_decrypt(hex2bin($r[0]['pass']), $password, $x[0]['prvkey']);
-				$mbox = email_connect($mailbox, $r[0]['user'], $password);
+				$mbox = Email::emailConnect($mailbox, $r[0]['user'], $password);
 				if (!mbox) {
 					return false;
 				}
 			}
 
-			$msgs = email_poll($mbox, $uri);
+			$msgs = Email::emailPoll($mbox, $uri);
 			logger('searching '.$uri.', '.count($msgs).' messages found.', LOGGER_DEBUG);
 
 			if (!count($msgs)) {
@@ -1546,7 +1546,7 @@ class Probe
 		$data["notify"]  = 'smtp '.random_string();
 		$data["poll"]    = 'email '.random_string();
 
-		$x = email_msg_meta($mbox, $msgs[0]);
+		$x = Email::emailMsgMeta($mbox, $msgs[0]);
 		if (stristr($x[0]->from, $uri)) {
 			$adr = imap_rfc822_parse_adrlist($x[0]->from, '');
 		} elseif (stristr($x[0]->to, $uri)) {
diff --git a/src/Protocol/Email.php b/src/Protocol/Email.php
new file mode 100644
index 0000000000..d147da1166
--- /dev/null
+++ b/src/Protocol/Email.php
@@ -0,0 +1,333 @@
+<?php
+/**
+ * @file src/Protocol/Email.php
+ */
+namespace Friendica\Protocol;
+
+require_once 'include/html2plain.php';
+require_once 'include/msgclean.php';
+require_once 'include/quoteconvert.php';
+
+class Email
+{
+	public static function emailConnect($mailbox, $username, $password)
+	{
+		if (! function_exists('imap_open')) {
+			return false;
+		}
+
+		$mbox = @imap_open($mailbox, $username, $password);
+
+		return $mbox;
+	}
+
+	public static function emailPoll($mbox, $email_addr)
+	{
+		if (! ($mbox && $email_addr))
+			return array();
+
+		$search1 = @imap_search($mbox,'FROM "' . $email_addr . '"', SE_UID);
+		if (!$search1) {
+			$search1 = array();
+		} else {
+			logger("Found mails from ".$email_addr, LOGGER_DEBUG);
+		}
+
+		$search2 = @imap_search($mbox,'TO "' . $email_addr . '"', SE_UID);
+		if (!$search2) {
+			$search2 = array();
+		} else {
+			logger("Found mails to ".$email_addr, LOGGER_DEBUG);
+		}
+
+		$search3 = @imap_search($mbox,'CC "' . $email_addr . '"', SE_UID);
+		if (!$search3) {
+			$search3 = array();
+		} else {
+			logger("Found mails cc ".$email_addr, LOGGER_DEBUG);
+		}
+
+		$res = array_unique(array_merge($search1, $search2, $search3));
+
+		return $res;
+	}
+
+	public static function constructMailboxName($mailacct)
+	{
+		$ret = '{' . $mailacct['server'] . ((intval($mailacct['port'])) ? ':' . $mailacct['port'] : '');
+		$ret .= (($mailacct['ssltype']) ?  '/' . $mailacct['ssltype'] . '/novalidate-cert' : '');
+		$ret .= '}' . $mailacct['mailbox'];
+		return $ret;
+	}
+
+	public static function emailMsgMeta($mbox, $uid)
+	{
+		$ret = (($mbox && $uid) ? @imap_fetch_overview($mbox,$uid,FT_UID) : array(array())); // POSSIBLE CLEANUP --> array(array()) is probably redundant now
+		return ((count($ret)) ? $ret : array());
+	}
+
+	/**
+	 * @brief Check addons, not called from main friendica project
+	 */
+	function email_msg_headers($mbox, $uid) {
+		$raw_header = (($mbox && $uid) ? @imap_fetchheader($mbox,$uid,FT_UID) : '');
+		$raw_header = str_replace("\r",'',$raw_header);
+		$ret = array();
+		$h = explode("\n",$raw_header);
+		if (count($h))
+		foreach ($h as $line ) {
+			if (preg_match("/^[a-zA-Z]/", $line)) {
+				$key = substr($line,0,strpos($line,':'));
+				$value = substr($line,strpos($line,':')+1);
+
+				$last_entry = strtolower($key);
+				$ret[$last_entry] = trim($value);
+			}
+			else {
+				$ret[$last_entry] .= ' ' . trim($line);
+			}
+		}
+		return $ret;
+	}
+
+	public static function emailGetMsg($mbox, $uid, $reply)
+	{
+		$ret = array();
+
+		$struc = (($mbox && $uid) ? @imap_fetchstructure($mbox,$uid,FT_UID) : null);
+
+		if (! $struc)
+			return $ret;
+
+		if (! $struc->parts) {
+			$ret['body'] = self::emailGetPart($mbox,$uid,$struc,0, 'html');
+			$html = $ret['body'];
+
+			if (trim($ret['body']) == '')
+				$ret['body'] = self::emailGetPart($mbox,$uid,$struc,0, 'plain');
+			else
+				$ret['body'] = html2bbcode($ret['body']);
+		}
+		else {
+			$text = '';
+			$html = '';
+			foreach ($struc->parts as $ptop => $p) {
+				$x = self::emailGetPart($mbox,$uid,$p,$ptop + 1, 'plain');
+				if ($x) {
+					$text .= $x;
+				}
+
+				$x = self::emailGetPart($mbox,$uid,$p,$ptop + 1, 'html');
+				if ($x) {
+					$html .= $x;
+				}
+			}
+			if (trim($html) != '') {
+				$ret['body'] = html2bbcode($html);
+			} else {
+				$ret['body'] = $text;
+			}
+		}
+
+		$ret['body'] = removegpg($ret['body']);
+		$msg = removesig($ret['body']);
+		$ret['body'] = $msg['body'];
+		$ret['body'] = convertquote($ret['body'], $reply);
+
+		if (trim($html) != '') {
+			$ret['body'] = removelinebreak($ret['body']);
+		}
+
+		$ret['body'] = unifyattributionline($ret['body']);
+
+		return $ret;
+	}
+
+	// At the moment - only return plain/text.
+	// Later we'll repackage inline images as data url's and make the HTML safe
+
+	private static function emailGetPart($mbox, $uid, $p, $partno, $subtype)
+	{
+		// $partno = '1', '2', '2.1', '2.1.3', etc for multipart, 0 if simple
+		global $htmlmsg,$plainmsg,$charset,$attachments;
+
+		//echo $partno."\n";
+
+		// DECODE DATA
+		$data = ($partno)
+			? @imap_fetchbody($mbox,$uid,$partno, FT_UID|FT_PEEK)
+		: @imap_body($mbox,$uid,FT_UID|FT_PEEK);
+
+		// Any part may be encoded, even plain text messages, so check everything.
+		if ($p->encoding==4)
+			$data = quoted_printable_decode($data);
+		elseif ($p->encoding==3)
+			$data = base64_decode($data);
+
+		// PARAMETERS
+		// get all parameters, like charset, filenames of attachments, etc.
+		$params = array();
+		if ($p->parameters)
+			foreach ($p->parameters as $x)
+				$params[strtolower($x->attribute)] = $x->value;
+		if (isset($p->dparameters) && $p->dparameters)
+			foreach ($p->dparameters as $x)
+				$params[strtolower($x->attribute)] = $x->value;
+
+		// ATTACHMENT
+		// Any part with a filename is an attachment,
+		// so an attached text file (type 0) is not mistaken as the message.
+
+		if ((isset($params['filename']) && $params['filename']) || (isset($params['name']) && $params['name'])) {
+			// filename may be given as 'Filename' or 'Name' or both
+			$filename = ($params['filename'])? $params['filename'] : $params['name'];
+			// filename may be encoded, so see imap_mime_header_decode()
+			$attachments[$filename] = $data;  // this is a problem if two files have same name
+		}
+
+		// TEXT
+		if ($p->type == 0 && $data) {
+			// Messages may be split in different parts because of inline attachments,
+			// so append parts together with blank row.
+			if (strtolower($p->subtype)==$subtype) {
+				$data = iconv($params['charset'], 'UTF-8//IGNORE', $data);
+				return (trim($data) ."\n\n");
+			} else
+				$data = '';
+
+			// $htmlmsg .= $data ."<br><br>";
+			$charset = $params['charset'];  // assume all parts are same charset
+		}
+
+		// EMBEDDED MESSAGE
+		// Many bounce notifications embed the original message as type 2,
+		// but AOL uses type 1 (multipart), which is not handled here.
+		// There are no PHP functions to parse embedded messages,
+		// so this just appends the raw source to the main message.
+		//	elseif ($p->type==2 && $data) {
+		//		$plainmsg .= $data."\n\n";
+		//	}
+
+		// SUBPART RECURSION
+		if (isset($p->parts) && $p->parts) {
+			$x = "";
+			foreach ($p->parts as $partno0=>$p2) {
+				$x .=  self::emailGetPart($mbox,$uid,$p2,$partno . '.' . ($partno0+1), $subtype);  // 1.2, 1.2.1, etc.
+				//if ($x) {
+				//	return $x;
+				//}
+			}
+			return $x;
+		}
+	}
+
+	public static function emailHeaderEncode($in_str, $charset)
+	{
+		$out_str = $in_str;
+		$need_to_convert = false;
+
+		for ($x = 0; $x < strlen($in_str); $x ++) {
+			if ((ord($in_str[$x]) == 0) || ((ord($in_str[$x]) > 128))) {
+				$need_to_convert = true;
+			}
+		}
+
+		if (! $need_to_convert)
+			return $in_str;
+
+		if ($out_str && $charset) {
+
+			// define start delimimter, end delimiter and spacer
+			$end = "?=";
+			$start = "=?" . $charset . "?B?";
+			$spacer = $end . "\r\n " . $start;
+
+			// determine length of encoded text within chunks
+			// and ensure length is even
+			$length = 75 - strlen($start) - strlen($end);
+
+			/*
+				[EDIT BY danbrown AT php DOT net: The following
+				is a bugfix provided by (gardan AT gmx DOT de)
+				on 31-MAR-2005 with the following note:
+				"This means: $length should not be even,
+				but divisible by 4. The reason is that in
+				base64-encoding 3 8-bit-chars are represented
+				by 4 6-bit-chars. These 4 chars must not be
+				split between two encoded words, according
+				to RFC-2047.
+			*/
+			$length = $length - ($length % 4);
+
+			// encode the string and split it into chunks
+			// with spacers after each chunk
+			$out_str = base64_encode($out_str);
+			$out_str = chunk_split($out_str, $length, $spacer);
+
+			// remove trailing spacer and
+			// add start and end delimiters
+			$spacer = preg_quote($spacer,'/');
+			$out_str = preg_replace("/" . $spacer . "$/", "", $out_str);
+			$out_str = $start . $out_str . $end;
+		}
+		return $out_str;
+	}
+
+	/**
+	 * emailSend is used by NETWORK_EMAIL and NETWORK_EMAIL2 code
+	 * (not to notify the user, but to send items to email contacts)
+	 *
+	 * @todo This could be changed to use the Emailer class
+	 */
+	public static function emailSend($addr, $subject, $headers, $item)
+	{
+		//$headers .= 'MIME-Version: 1.0' . "\n";
+		//$headers .= 'Content-Type: text/html; charset=UTF-8' . "\n";
+		//$headers .= 'Content-Type: text/plain; charset=UTF-8' . "\n";
+		//$headers .= 'Content-Transfer-Encoding: 8bit' . "\n\n";
+
+		$part = uniqid("", true);
+
+		$html    = prepare_body($item);
+
+		$headers .= "Mime-Version: 1.0\n";
+		$headers .= 'Content-Type: multipart/alternative; boundary="=_'.$part.'"'."\n\n";
+
+		$body = "\n--=_".$part."\n";
+		$body .= "Content-Transfer-Encoding: 8bit\n";
+		$body .= "Content-Type: text/plain; charset=utf-8; format=flowed\n\n";
+
+		$body .= html2plain($html)."\n";
+
+		$body .= "--=_".$part."\n";
+		$body .= "Content-Transfer-Encoding: 8bit\n";
+		$body .= "Content-Type: text/html; charset=utf-8\n\n";
+
+		$body .= '<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">'.$html."</body></html>\n";
+
+		$body .= "--=_".$part."--";
+
+		//$message = '<html><body>' . $html . '</body></html>';
+		//$message = html2plain($html);
+		logger('notifier: email delivery to ' . $addr);
+		mail($addr, $subject, $body, $headers);
+	}
+
+	public static function iri2msgid($iri)
+	{
+		if (!strpos($iri, "@"))
+			$msgid = preg_replace("/urn:(\S+):(\S+)\.(\S+):(\d+):(\S+)/i", "urn!$1!$4!$5@$2.$3", $iri);
+		else
+			$msgid = $iri;
+		return($msgid);
+	}
+
+	public static function msgid2iri($msgid)
+	{
+		if (strpos($msgid, "@"))
+			$iri = preg_replace("/urn!(\S+)!(\d+)!(\S+)@(\S+)\.(\S+)/i", "urn:$1:$4.$5:$2:$3", $msgid);
+		else
+			$iri = $msgid;
+		return($iri);
+	}
+}
diff --git a/src/Util/Emailer.php b/src/Util/Emailer.php
index a2be983d6c..434c3da798 100644
--- a/src/Util/Emailer.php
+++ b/src/Util/Emailer.php
@@ -5,8 +5,7 @@
 namespace Friendica\Util;
 
 use Friendica\Core\PConfig;
-
-require_once 'include/email.php';
+use Friendica\Protocol\Email;
 
 /**
  * @breif class to handle emailing
@@ -38,8 +37,8 @@ class Emailer
 			$email_textonly = PConfig::get($params['uid'], "system", "email_textonly");
 		}
 
-		$fromName = email_header_encode(html_entity_decode($params['fromName'], ENT_QUOTES, 'UTF-8'), 'UTF-8');
-		$messageSubject = email_header_encode(html_entity_decode($params['messageSubject'], ENT_QUOTES, 'UTF-8'), 'UTF-8');
+		$fromName = Email::emailHeaderEncode(html_entity_decode($params['fromName'], ENT_QUOTES, 'UTF-8'), 'UTF-8');
+		$messageSubject = Email::emailHeaderEncode(html_entity_decode($params['messageSubject'], ENT_QUOTES, 'UTF-8'), 'UTF-8');
 
 		// generate a mime boundary
 		$mimeBoundary   =rand(0, 9)."-"
diff --git a/src/Worker/Delivery.php b/src/Worker/Delivery.php
index c47e98287b..7d800f54f7 100644
--- a/src/Worker/Delivery.php
+++ b/src/Worker/Delivery.php
@@ -12,13 +12,13 @@ use Friendica\Database\DBM;
 use Friendica\Object\Contact;
 use Friendica\Protocol\Diaspora;
 use Friendica\Protocol\DFRN;
+use Friendica\Protocol\Email;
 
 require_once 'include/queue_fn.php';
 require_once 'include/html2plain.php';
 require_once 'include/datetime.php';
 require_once 'include/items.php';
 require_once 'include/bbcode.php';
-require_once 'include/email.php';
 
 /// @todo This is some ugly code that needs to be split into several methods
 
@@ -418,36 +418,36 @@ class Delivery {
 					if ($r1 && $r1[0]['reply_to'])
 						$reply_to = $r1[0]['reply_to'];
 
-					$subject  = (($it['title']) ? email_header_encode($it['title'],'UTF-8') : t("\x28no subject\x29")) ;
+					$subject  = (($it['title']) ? Email::emailHeaderEncode($it['title'],'UTF-8') : t("\x28no subject\x29")) ;
 
 					// only expose our real email address to true friends
 
 					if (($contact['rel'] == CONTACT_IS_FRIEND) && !$contact['blocked']) {
 						if ($reply_to) {
-							$headers  = 'From: '.email_header_encode($local_user[0]['username'],'UTF-8').' <'.$reply_to.'>'."\n";
+							$headers  = 'From: '.Email::emailHeaderEncode($local_user[0]['username'],'UTF-8').' <'.$reply_to.'>'."\n";
 							$headers .= 'Sender: '.$local_user[0]['email']."\n";
 						} else {
-							$headers  = 'From: '.email_header_encode($local_user[0]['username'],'UTF-8').' <'.$local_user[0]['email'].'>'."\n";
+							$headers  = 'From: '.Email::emailHeaderEncode($local_user[0]['username'],'UTF-8').' <'.$local_user[0]['email'].'>'."\n";
 						}
 					} else {
-						$headers  = 'From: '. email_header_encode($local_user[0]['username'],'UTF-8') .' <'. t('noreply') .'@'.$a->get_hostname() .'>'. "\n";
+						$headers  = 'From: '. Email::emailHeaderEncode($local_user[0]['username'],'UTF-8') .' <'. t('noreply') .'@'.$a->get_hostname() .'>'. "\n";
 					}
 
 					//if ($reply_to)
 					//	$headers .= 'Reply-to: '.$reply_to . "\n";
 
-					$headers .= 'Message-Id: <'. iri2msgid($it['uri']).'>'. "\n";
+					$headers .= 'Message-Id: <'. Email::iri2msgid($it['uri']).'>'. "\n";
 
 					//logger("Mail: uri: ".$it['uri']." parent-uri ".$it['parent-uri'], LOGGER_DEBUG);
 					//logger("Mail: Data: ".print_r($it, true), LOGGER_DEBUG);
 					//logger("Mail: Data: ".print_r($it, true), LOGGER_DATA);
 
 					if ($it['uri'] !== $it['parent-uri']) {
-						$headers .= "References: <".iri2msgid($it["parent-uri"]).">";
+						$headers .= "References: <".Email::iri2msgid($it["parent-uri"]).">";
 
 						// If Threading is enabled, write down the correct parent
 						if (($it["thr-parent"] != "") && ($it["thr-parent"] != $it["parent-uri"]))
-							$headers .= " <".iri2msgid($it["thr-parent"]).">";
+							$headers .= " <".Email::iri2msgid($it["thr-parent"]).">";
 						$headers .= "\n";
 
 						if (!$it['title']) {
@@ -469,7 +469,7 @@ class Delivery {
 						if (strncasecmp($subject,'RE:',3))
 							$subject = 'Re: '.$subject;
 					}
-					email_send($addr, $subject, $headers, $it);
+					Email::emailSend($addr, $subject, $headers, $it);
 				}
 				break;
 
diff --git a/src/Worker/OnePoll.php b/src/Worker/OnePoll.php
index 356fce4337..3f00454b2a 100644
--- a/src/Worker/OnePoll.php
+++ b/src/Worker/OnePoll.php
@@ -8,6 +8,7 @@ use Friendica\Core\Config;
 use Friendica\Core\PConfig;
 use Friendica\Database\DBM;
 use Friendica\Object\Contact;
+use Friendica\Protocol\Email;
 use Friendica\Protocol\PortableContact;
 use dba;
 
@@ -20,7 +21,6 @@ Class OnePoll
 
 		require_once 'include/datetime.php';
 		require_once 'include/items.php';
-		require_once 'include/email.php';
 		require_once 'include/queue_fn.php';
 
 		logger('onepoll: start');
@@ -328,10 +328,10 @@ Class OnePoll
 			$condition = array("`server` != '' AND `uid` = ?", $importer_uid);
 			$mailconf = dba::select('mailacct', array(), $condition, array('limit' => 1));
 			if (DBM::is_result($x) && DBM::is_result($mailconf)) {
-				$mailbox = construct_mailbox_name($mailconf);
+				$mailbox = Email::constructMailboxName($mailconf);
 				$password = '';
 				openssl_private_decrypt(hex2bin($mailconf['pass']), $password, $x['prvkey']);
-				$mbox = email_connect($mailbox, $mailconf['user'], $password);
+				$mbox = Email::emailConnect($mailbox, $mailconf['user'], $password);
 				unset($password);
 				logger("Mail: Connect to " . $mailconf['user']);
 				if ($mbox) {
@@ -344,12 +344,12 @@ Class OnePoll
 			}
 
 			if ($mbox) {
-				$msgs = email_poll($mbox, $contact['addr']);
+				$msgs = Email::emailPoll($mbox, $contact['addr']);
 
 				if (count($msgs)) {
 					logger("Mail: Parsing ".count($msgs)." mails from ".$contact['addr']." for ".$mailconf['user'], LOGGER_DEBUG);
 
-					$metas = email_msg_meta($mbox,implode(',', $msgs));
+					$metas = Email::emailMsgMeta($mbox,implode(',', $msgs));
 					if (count($metas) != count($msgs)) {
 						logger("onepoll: for " . $mailconf['user'] . " there are ". count($msgs) . " messages but received " . count($metas) . " metas", LOGGER_DEBUG);
 					} else {
@@ -361,10 +361,10 @@ Class OnePoll
 							$datarray = array();
 							$datarray['verb'] = ACTIVITY_POST;
 							$datarray['object-type'] = ACTIVITY_OBJ_NOTE;
-		//					$meta = email_msg_meta($mbox, $msg_uid);
-		//					$headers = email_msg_headers($mbox, $msg_uid);
+							// $meta = Email::emailMsgMeta($mbox, $msg_uid);
+							// $headers = email_msg_headers($mbox, $msg_uid);
 
-							$datarray['uri'] = msgid2iri(trim($meta->message_id, '<>'));
+							$datarray['uri'] = Email::msgid2iri(trim($meta->message_id, '<>'));
 
 							// Have we seen it before?
 							$fields = array('deleted', 'id');
@@ -416,7 +416,7 @@ Class OnePoll
 								$refs_arr = explode(' ', $raw_refs);
 								if (count($refs_arr)) {
 									for ($x = 0; $x < count($refs_arr); $x ++) {
-										$refs_arr[$x] = "'" . msgid2iri(str_replace(array('<', '>', ' '),array('', '', ''),dbesc($refs_arr[$x]))) . "'";
+										$refs_arr[$x] = "'" . Email::msgid2iri(str_replace(array('<', '>', ' '),array('', '', ''),dbesc($refs_arr[$x]))) . "'";
 									}
 								}
 								$qstr = implode(',', $refs_arr);
@@ -466,7 +466,7 @@ Class OnePoll
 								$datarray['parent-uri'] = $datarray['uri'];
 							}
 
-							$r = email_get_msg($mbox, $msg_uid, $reply);
+							$r = Email::emailGetMsg($mbox, $msg_uid, $reply);
 							if (!$r) {
 								logger("Mail: can't fetch msg ".$msg_uid." for ".$mailconf['user']);
 								continue;
-- 
2.39.5