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Refactored mime helper

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Signed-off-by: Janos SUTO <sj@acts.hu>
This commit is contained in:
Janos SUTO
2023-06-07 07:33:20 +02:00
parent 0dda09c23c
commit 6054d4bd2a
4 changed files with 78 additions and 68 deletions
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48
webui/system/helper/mime.php
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@ -2,7 +2,7 @@
class Piler_Mime_Decode {
const HEADER_FIELDS = ['from', 'to', 'cc', 'subject', 'date'];
const HEADER_FIELDS = ['from', 'sender', 'to', 'cc', 'subject', 'date'];
public static function normalize_message($message) {
@ -24,10 +24,10 @@ class Piler_Mime_Decode {
self::parseMessage($body, $result);
}
else {
$result[] = array(
$result[] = [
'headers' => $headers,
'body' => $body
);
];
}
return;
@ -45,7 +45,7 @@ class Piler_Mime_Decode {
}
else {
if(in_array($headers['content-type']['type'], ["text/plain", "text/html"])) {
$result[] = array('headers' => $headers, 'body' => $body);
$result[] = ['headers' => $headers, 'body' => $body];
}
else if($headers['content-type']['type'] == "message/rfc822") {
self::parseMessage($body, $result);
@ -57,14 +57,14 @@ class Piler_Mime_Decode {
public static function splitMime($body, $boundary) {
$start = 0;
$res = array();
$res = [];
// Extract the mime parts excluding the boundary itself
$p = strpos($body, '--' . $boundary . EOL, $start);
if($p === false) {
// no parts found!
return array();
return [];
}
// Position after first boundary line
@ -80,7 +80,7 @@ class Piler_Mime_Decode {
$p = strpos($body, '--' . $boundary . '--', $start);
if($p === false) {
return array();
return [];
}
// The remaining part also needs to be parsed:
@ -100,6 +100,8 @@ class Piler_Mime_Decode {
$headers = [];
$body = '';
$message = self::normalize_message($message);
// Find an empty line between headers and body, otherwise we got a header-only message
if(strpos($message, EOL . EOL)) {
@ -180,7 +182,7 @@ class Piler_Mime_Decode {
continue;
}
$headers[$lower] = array($headers[$lower], $header);
$headers[$lower] = [$headers[$lower], $header];
}
// Add some default values, if they are missing
@ -196,9 +198,21 @@ class Piler_Mime_Decode {
for($i=0; $i<count(self::HEADER_FIELDS); $i++) {
if(!isset($headers[self::HEADER_FIELDS[$i]])) { $headers[self::HEADER_FIELDS[$i]] = ''; }
$headers[self::HEADER_FIELDS[$i]] = preg_replace("/gb2312/i", "GBK", $headers[self::HEADER_FIELDS[$i]]);
// If the mail header features the same field more than once, eg.
// Date: Wed, 23 Mar 2016 21:26:53 +0100
// Date: Wed, 23 Mar 2016 21:26:53 +0100
// then take the first occurance
$headers[self::HEADER_FIELDS[$i]] = iconv_mime_decode($headers[self::HEADER_FIELDS[$i]], ICONV_MIME_DECODE_CONTINUE_ON_ERROR);
$header = $headers[self::HEADER_FIELDS[$i]];
if(is_array($header)) {
$header = $header[0];
}
if(ENABLE_GB2312_FIX) {
$header = preg_replace("/gb2312/i", "GBK", $header);
}
$headers[self::HEADER_FIELDS[$i]] = iconv_mime_decode($header, ICONV_MIME_DECODE_CONTINUE_ON_ERROR);
}
$headers['content-type'] = self::splitContentType($headers['content-type']);
@ -212,7 +226,7 @@ class Piler_Mime_Decode {
public static function headersToArray($headers = '') {
$token = '';
$last_token = '';
$result = array();
$result = [];
$headers = explode(EOL, $headers);
@ -258,7 +272,6 @@ class Piler_Mime_Decode {
}
foreach($result as $k => $v) {
if(strchr($v, EOL)) {
$result[$k] = explode(EOL, $v);
}
@ -269,7 +282,7 @@ class Piler_Mime_Decode {
public static function splitContentType($field = '') {
$split = array();
$split = [];
$what = 'type';
$field = $what . '=' . $field;
@ -277,7 +290,7 @@ class Piler_Mime_Decode {
return $split;
}
$split = array();
$split = [];
foreach ($matches[1] as $key => $name) {
$name = strtolower($name);
if($matches[2][$key][0] == '"') {
@ -291,7 +304,7 @@ class Piler_Mime_Decode {
}
public static function getBoundary($headers = array()) {
public static function getBoundary($headers = []) {
if(isset($headers['content-type']['boundary'])) {
return $headers['content-type']['boundary'];
}
@ -300,7 +313,7 @@ class Piler_Mime_Decode {
}
public static function fixMimeBodyPart($headers = array(), $body = '') {
public static function fixMimeBodyPart($headers = [], $body = '') {
if(isset($headers['content-transfer-encoding'])) {
if(strtolower($headers['content-transfer-encoding']) == 'quoted-printable') {
@ -313,9 +326,10 @@ class Piler_Mime_Decode {
}
if(isset($headers['content-type']['charset'])) {
if(strtolower($headers['content-type']['charset']) == 'gb2312') {
if(ENABLE_GB2312_FIX && strtolower($headers['content-type']['charset']) == 'gb2312') {
$headers['content-type']['charset'] = 'GBK';
}
$body = iconv($headers['content-type']['charset'], 'utf-8' . '//IGNORE', $body);
}