Fixed bug #52681 (mb_send_mail() appends an extra MIME-Version header).

ext/mbstring/mbstring.c

@@ -4025,7 +4025,7 @@ PHP_FUNCTION(mb_send_mail)
 	}
 
 	/* other headers */
-#define PHP_MBSTR_MAIL_MIME_HEADER1 "Mime-Version: 1.0"
+#define PHP_MBSTR_MAIL_MIME_HEADER1 "MIME-Version: 1.0"
 #define PHP_MBSTR_MAIL_MIME_HEADER2 "Content-Type: text/plain"
 #define PHP_MBSTR_MAIL_MIME_HEADER3 "; charset="
 #define PHP_MBSTR_MAIL_MIME_HEADER4 "Content-Transfer-Encoding: "
@@ -4038,8 +4038,10 @@ PHP_FUNCTION(mb_send_mail)
 		}
 	}
 
-	mbfl_memory_device_strncat(&device, PHP_MBSTR_MAIL_MIME_HEADER1, sizeof(PHP_MBSTR_MAIL_MIME_HEADER1) - 1);
-	mbfl_memory_device_strncat(&device, "\n", 1);
+	if (!zend_hash_exists(&ht_headers, "MIME-VERSION", sizeof("MIME-VERSION") - 1)) {
+		mbfl_memory_device_strncat(&device, PHP_MBSTR_MAIL_MIME_HEADER1, sizeof(PHP_MBSTR_MAIL_MIME_HEADER1) - 1);
+		mbfl_memory_device_strncat(&device, "\n", 1);
+	}
 
 	if (!suppressed_hdrs.cnt_type) {
 		mbfl_memory_device_strncat(&device, PHP_MBSTR_MAIL_MIME_HEADER2, sizeof(PHP_MBSTR_MAIL_MIME_HEADER2) - 1);

ext/mbstring/tests/bug52861.phpt

@@ -0,0 +1,26 @@
+--TEST--
+Bug #52681 (mb_send_mail() appends an extra MIME-Version header)
+--SKIPIF--
+<?php
+if (!function_exists("mb_send_mail") || !mb_language("neutral")) {
+	die("skip mb_send_mail() not available");
+}
+?>
+--INI--
+sendmail_path=/bin/cat
+mail.add_x_header=off
+--FILE--
+<?php
+$to = 'example@example.com';
+$headers = 'MIME-Version: 2.0';
+
+mb_send_mail($to, mb_language(), "test", $headers);
+?>
+--EXPECTF--
+To: example@example.com
+Subject: %s
+MIME-Version: 2.0
+Content-Type: text/plain; charset=%s
+Content-Transfer-Encoding: %s
+
+%s

ext/mbstring/tests/mb_send_mail01.phpt

@@ -25,14 +25,14 @@ if (mb_language("neutral")) {
 --EXPECTF--
 To: example@example.com
 Subject: %s
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=%s
 Content-Transfer-Encoding: %s
 
 %s
 To: example@example.com
 Subject: test neutral
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
 Content-Transfer-Encoding: BASE64
 

ext/mbstring/tests/mb_send_mail02.phpt

@@ -25,14 +25,14 @@ if (mb_language("japanese")) {
 --EXPECTF--
 To: example@example.com
 Subject: %s
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=%s
 Content-Transfer-Encoding: %s
 
 %s
 To: example@example.com
 Subject: =?ISO-2022-JP?B?GyRCJUYlOSVIGyhCIEphcGFuZXNl?=
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=ISO-2022-JP
 Content-Transfer-Encoding: 7bit
 

ext/mbstring/tests/mb_send_mail03.phpt

@@ -25,14 +25,14 @@ if (mb_language("english")) {
 --EXPECTF--
 To: example@example.com
 Subject: %s
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=%s
 Content-Transfer-Encoding: %s
 
 %s
 To: example@example.com
 Subject: test English
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=%s-8859-1
 Content-Transfer-Encoding: 8bit
 

ext/mbstring/tests/mb_send_mail04.phpt

@@ -25,14 +25,14 @@ if (mb_language("german")) {
 --EXPECTF--
 To: example@example.com
 Subject: %s
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=%s
 Content-Transfer-Encoding: %s
 
 %s
 To: example@example.com
 Subject: =?ISO-8859-15?Q?Pr=FCfung=20German?=
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=%s-8859-15
 Content-Transfer-Encoding: 8bit
 

ext/mbstring/tests/mb_send_mail05.phpt

@@ -28,7 +28,7 @@ if (mb_language("simplified chinese")) {
 --EXPECTF--
 To: example@example.com
 Subject: %s
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=%s
 Content-Transfer-Encoding: %s
 
@@ -36,7 +36,7 @@ Content-Transfer-Encoding: %s
 To: example@example.com
 Subject: =?HZ-GB-2312?B?fnsyYlFpfn0gU2ltcGxpZmllZCBD?=
  =?HZ-GB-2312?B?aGluZXNl?=
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=HZ-GB-2312
 Content-Transfer-Encoding: 7bit
 

ext/mbstring/tests/mb_send_mail06.phpt

@@ -28,14 +28,14 @@ if (mb_language("traditional chinese")) {
 --EXPECTF--
 To: example@example.com
 Subject: %s
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=%s
 Content-Transfer-Encoding: %s
 
 %s
 To: example@example.com
 Subject: =?BIG5?B?tPrF5yBUcmFkaXRpb25hbCBDaGluZXNl?=
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=BIG5
 Content-Transfer-Encoding: 8bit
 

ext/mbstring/tests/mb_send_mail07.phpt

@@ -28,14 +28,14 @@ if (mb_language("korean")) {
 --EXPECTF--
 To: example@example.com
 Subject: %s
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=%s
 Content-Transfer-Encoding: %s
 
 %s
 To: example@example.com
 Subject: =?ISO-2022-KR?B?GyQpQw5FVz06Ri4PIEtvcmVhbg8=?=
-Mime-Version: 1.0
+MIME-Version: 1.0
 Content-Type: text/plain; charset=ISO-2022-KR
 Content-Transfer-Encoding: 7bit