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-rw-r--r--program/include/rcube_imap.php10
-rw-r--r--program/include/rcube_shared.inc31
2 files changed, 37 insertions, 4 deletions
diff --git a/program/include/rcube_imap.php b/program/include/rcube_imap.php
index 574ed6cc2..9d8f6d314 100644
--- a/program/include/rcube_imap.php
+++ b/program/include/rcube_imap.php
@@ -1159,10 +1159,13 @@ class rcube_imap
if (is_array($part[8]) && empty($struct->parts))
$struct->parts[] = $this->_structure_part($part[8], ++$count, $struct->mime_id);
}
-
+
// normalize filename property
if ($filename_mime = $struct->d_parameters['filename'] ? $struct->d_parameters['filename'] : $struct->ctype_parameters['name'])
- $struct->filename = rcube_imap::decode_mime_string($filename_mime, $this->default_charset);
+ {
+ $struct->filename = rcube_imap::decode_mime_string($filename_mime,
+ $struct->charset ? $struct->charset : rc_detect_encoding($filename_mime, $this->default_charset));
+ }
else if ($filename_encoded = $struct->d_parameters['filename*'] ? $struct->d_parameters['filename*'] : $struct->ctype_parameters['name*'])
{
// decode filename according to RFC 2231, Section 4
@@ -1170,7 +1173,8 @@ class rcube_imap
$struct->filename = rcube_charset_convert(urldecode($filename_urlencoded), $filename_charset);
}
else if (!empty($struct->headers['content-description']))
- $struct->filename = rcube_imap::decode_mime_string($struct->headers['content-description'], $this->default_charset);
+ $struct->filename = rcube_imap::decode_mime_string($struct->headers['content-description'],
+ $struct->charset ? $struct->charset : rc_detect_encoding($struct->headers['content-description'],$this->default_charset));
return $struct;
}
diff --git a/program/include/rcube_shared.inc b/program/include/rcube_shared.inc
index 8e9d3dd1c..801dac7fe 100644
--- a/program/include/rcube_shared.inc
+++ b/program/include/rcube_shared.inc
@@ -581,4 +581,33 @@ function rc_mime_content_type($path, $failover = 'unknown/unknown')
return $mime_type;
}
-?> \ No newline at end of file
+
+/**
+ * A method to guess encoding of a string.
+ *
+ * @param string $string String.
+ * @param string $failover Default result for failover.
+ *
+ * @return string
+ */
+function rc_detect_encoding($string, $failover='')
+{
+ if (!function_exists('mb_detect_encoding')) {
+ return $failover;
+ }
+
+ // FIXME: the order is important, because sometimes
+ // iso string is detected as euc-jp and etc.
+ $enc = array(
+ 'UTF-8', 'ISO-8859-1', 'ISO-8859-2', 'ISO-8859-3', 'ISO-8859-4',
+ 'ISO-8859-5', 'ISO-8859-6', 'ISO-8859-7', 'ISO-8859-8', 'ISO-8859-9',
+ 'ISO-8859-10', 'ISO-8859-13', 'ISO-8859-14', 'ISO-8859-15', 'ISO-8859-16',
+ 'WINDOWS-1252', 'WINDOWS-1251', 'EUC-JP', 'EUC-TW', 'KOI8-R'
+ );
+
+ $result = mb_detect_encoding($string, join(',', $enc));
+
+ return $result ? $result : $failover;
+}
+
+?>