Header value decoding improved Webklex#410

Author: Webklex

CHANGELOG.md

@@ -7,6 +7,7 @@ Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) princip
 ## [UNRELEASED]
 ### Fixed
 - Legacy protocol support fixed (object to array conversion) #411
+- Header value decoding improved #410
 
 ### Added
 - NaN

src/Header.php

@@ -421,22 +421,24 @@ public function decode(mixed $value): mixed {
         $decoder = $this->config['decoder']['message'];
 
         if ($value !== null) {
-            if ($decoder === 'utf-8' && extension_loaded('imap')) {
+            if ($decoder === 'utf-8') {
                 $decoded_values = $this->mime_header_decode($value);
                 $tempValue = "";
                 foreach ($decoded_values as $decoded_value) {
                     $tempValue .= $this->convertEncoding($decoded_value->text, $decoded_value->charset);
                 }
                 if ($tempValue) {
                     $value = $tempValue;
-                } else {
+                } else if (extension_loaded('imap')) {
                     $value = \imap_utf8($value);
+                }else if (function_exists('iconv_mime_decode')){
+                    $value = iconv_mime_decode($value, ICONV_MIME_DECODE_CONTINUE_ON_ERROR, "UTF-8");
+                }else{
+                    $value = mb_decode_mimeheader($value);
                 }
-            } elseif ($decoder === 'iconv' && $this->is_uft8($value)) {
+            }elseif ($decoder === 'iconv') {
                 $value = iconv_mime_decode($value, ICONV_MIME_DECODE_CONTINUE_ON_ERROR, "UTF-8");
-            }
-
-            if ($this->is_uft8($value)) {
+            }else if ($this->is_uft8($value)) {
                 $value = mb_decode_mimeheader($value);
             }
 

tests/fixtures/ImapMimeHeaderDecodeReturnsFalseTest.php

@@ -27,7 +27,7 @@ class ImapMimeHeaderDecodeReturnsFalseTest extends FixtureTestCase {
     public function testFixture() : void {
         $message = $this->getFixture("imap_mime_header_decode_returns_false.eml");
 
-        self::assertEquals("?p?#]ݰ?[??W̌N??LL?̍L??NL˜", $message->subject->first());
+        self::assertEquals("=?UTF-8?B?nnDusSNdG92w6Fuw61fMjAxOF8wMy0xMzMyNTMzMTkzLnBkZg==?=", $message->subject->first());
         self::assertEquals("Hi", $message->getTextBody());
         self::assertFalse($message->hasHTMLBody());
         self::assertEquals("2017-09-13 11:05:45", $message->date->first()->setTimezone('UTC')->format("Y-m-d H:i:s"));

tests/issues/Issue410Test.php

@@ -0,0 +1,27 @@
+<?php
+/*
+* File: Issue410Test.php
+* Category: -
+* Author: M.Goldenbaum
+* Created: 23.06.23 20:41
+* Updated: -
+*
+* Description:
+*  -
+*/
+
+namespace Tests\issues;
+
+use PHPUnit\Framework\TestCase;
+use Webklex\PHPIMAP\Message;
+
+class Issue410Test extends TestCase {
+
+    public function testIssueEmail() {
+        $filename = implode(DIRECTORY_SEPARATOR, [__DIR__, "..", "messages", "issue-410.eml"]);
+        $message = Message::fromFile($filename);
+
+        self::assertSame("☆第132号　「ガーデン&エクステリア」専門店のためのＱ&Ａサロン　【月刊エクステリア・ワーク】", (string)$message->subject);
+    }
+
+}

tests/messages/issue-410.eml

@@ -0,0 +1,9 @@
+From: [email protected]
+To: [email protected]
+Subject: =?ISO-2022-JP?B?GyRCIXlCaBsoQjEzMhskQjlmISEhViUsITwlRyVzGyhCJhskQiUoJS8lOSVGJWolIiFXQGxMZ0U5JE4kPyRhJE4jURsoQiYbJEIjQSU1JW0lcyEhIVo3bjQpJSglLyU5JUYlaiUiISYlbyE8JS8hWxsoQg==?=
+Date: Wed, 13 Sep 2017 13:05:45 +0200
+Content-Type: text/plain;
+	charset="us-ascii"
+Content-Transfer-Encoding: quoted-printable
+
+Hi