From a44f1c17bc3d1188962bb10e2621d6d46f4e7c3d Mon Sep 17 00:00:00 2001
From: Adam Harvey <aharvey@php.net>
Date: Tue, 4 May 2010 11:56:59 +0000
Subject: [PATCH] Fix for bug #48289 (iconv_mime_encode() quoted-printable
 scheme is broken). Thanks to Hiroaki Kawai for the original patch.

---
 NEWS                          |  2 ++
 ext/iconv/iconv.c             |  2 +-
 ext/iconv/tests/bug48289.phpt | 22 ++++++++++++++++++++++
 3 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 ext/iconv/tests/bug48289.phpt

diff --git a/NEWS b/NEWS
index 7b9a08b6e4..221532c884 100644
--- a/NEWS
+++ b/NEWS
@@ -66,6 +66,8 @@ PHP                                                                        NEWS
 - Fixed bug #49723 (LimitIterator with empty SeekableIterator). (Etienne)
 - Fixed bug #49576 (FILTER_VALIDATE_EMAIL filter needs updating) (Rasmus)
 - Fixed bug #49267 (Linking fails for iconv). (Moriyosh)
+- Fixed bug #48289 (iconv_mime_encode() quoted-printable scheme is broken).
+  (Adam, patch from hiroaki dot kawai at gmail dot com).
 - Fixed bug #43314 (iconv_mime_encode(), broken Q scheme). (Rasmus)
 - Fixed bug #23229 (syslog() truncates messages). (Adam)
 
diff --git a/ext/iconv/iconv.c b/ext/iconv/iconv.c
index 755426242f..b70c3df210 100644
--- a/ext/iconv/iconv.c
+++ b/ext/iconv/iconv.c
@@ -1217,7 +1217,7 @@ static php_iconv_err_t _php_iconv_mime_encode(smart_str *pretval, const char *fn
 				prev_in_left = ini_in_left = in_left;
 				ini_in_p = in_p;
 
-				for (out_size = char_cnt; out_size > 0;) {
+				for (out_size = (char_cnt - 2) / 3; out_size > 0;) {
 					size_t prev_out_left;
 
 					nbytes_required = 0;
diff --git a/ext/iconv/tests/bug48289.phpt b/ext/iconv/tests/bug48289.phpt
new file mode 100644
index 0000000000..fc2cd360b6
--- /dev/null
+++ b/ext/iconv/tests/bug48289.phpt
@@ -0,0 +1,22 @@
+--TEST--
+Bug #48289 (iconv_mime_encode() quoted-printable scheme is broken)
+--SKIPIF--
+<?php extension_loaded('iconv') or die('skip iconv extension is not available'); ?>
+--FILE--
+<?php
+$text = "\xE3\x83\x86\xE3\x82\xB9\xE3\x83\x88\xE3\x83\x86\xE3\x82\xB9\xE3\x83\x88";
+$options = array(
+    'scheme' => 'Q',
+    'input-charset' => 'UTF-8',
+    'output-charset' => 'UTF-8',
+    'line-length' => 30,
+);
+
+echo iconv_mime_encode('Subject', $text, $options);
+--EXPECT--
+Subject: =?UTF-8?Q?=E3=83=86?=
+ =?UTF-8?Q?=E3=82=B9?=
+ =?UTF-8?Q?=E3=83=88?=
+ =?UTF-8?Q?=E3=83=86?=
+ =?UTF-8?Q?=E3=82=B9?=
+ =?UTF-8?Q?=E3=83=88?=
-- 
2.50.1