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<?php
namespace Bitrix\KdaImportexcel;
use Bitrix\Main\Localization\Loc;
Loc::loadMessages(__FILE__);
class MailMessage
{
static function ParseHeader($message_header, $charset)
{
$h = new \Bitrix\KdaImportexcel\MailHeader();
$h->Parse($message_header, $charset);
return $h;
}
private static function decodeMessageBody($header, $body, $charset)
{
$encoding = strtolower($header->GetHeader('CONTENT-TRANSFER-ENCODING'));
if ($encoding == 'base64')
$body = base64_decode($body);
elseif ($encoding == 'quoted-printable')
$body = quoted_printable_decode($body);
elseif ($encoding == 'x-uue')
$body = \Bitrix\KdaImportexcel\MailUtil::uue_decode($body);
$content_type = strtolower($header->content_type);
if (
preg_match('/plain|html|text/', $content_type)
&& strpos($content_type, 'x-vcard') === false
&& strpos($content_type, 'csv') === false
&& $header->charset
)
{
$body = \Bitrix\KdaImportexcel\MailUtil::convertCharset($body, $header->charset, $charset);
}
return array(
'CONTENT-TYPE' => $content_type,
'CONTENT-ID' => $header->content_id,
'BODY' => $body,
'FILENAME' => $header->filename
);
}
static function parseMessage($message, $charset)
{
$headerP = \CUtil::binStrpos($message, "\r\n\r\n");
$rawHeader = \CUtil::binSubstr($message, 0, $headerP);
$body = \CUtil::binSubstr($message, $headerP+4);
$header = self::ParseHeader($rawHeader, $charset);
$htmlBody = '';
$textBody = '';
$parts = array();
if ($header->IsMultipart())
{
if (!preg_match('/\r\n$/', $message))
$message .= "\r\n";
$startB = "\r\n--" . $header->GetBoundary() . "\r\n";
$endB = "\r\n--" . $header->GetBoundary() . "--\r\n";
$startP = \CUtil::binStrpos($message, $startB)+\CUtil::binStrlen($startB);
$endP = \CUtil::binStrpos($message, $endB);
$data = \CUtil::binSubstr($message, $startP, $endP-$startP);
$isHtml = false;
$rawParts = preg_split("/\r\n--".preg_quote($header->GetBoundary(), '/')."\r\n/s", $data);
$tmpParts = array();
foreach ($rawParts as $part)
{
if (\CUtil::binSubstr($part, 0, 2) == "\r\n")
$part = "\r\n" . $part;
list(, $subHtml, $subText, $subParts) = static::parseMessage($part, $charset);
if ($subHtml)
$isHtml = true;
if ($subText)
$tmpParts[] = array($subHtml, $subText);
$parts = array_merge($parts, $subParts);
}
if (strtolower($header->MultipartType()) == 'alternative')
{
$candidate = '';
foreach ($tmpParts as $part)
{
if ($part[0])
{
if (!$htmlBody || (strlen($htmlBody) < strlen($part[0])))
{
$htmlBody = $part[0];
$candidate = $part[1];
}
}
else
{
if (!$textBody || strlen($textBody) < strlen($part[1]))
$textBody = $part[1];
}
}
if (!$textBody)
$textBody = $candidate;
}
else
{
foreach ($tmpParts as $part)
{
if ($textBody)
$textBody .= "\r\n\r\n";
$textBody .= $part[1];
if ($isHtml)
{
if ($htmlBody)
$htmlBody .= "\r\n\r\n";
$htmlBody .= $part[0] ?: $part[1];
}
}
}
}
else
{
$bodyPart = static::decodeMessageBody($header, $body, $charset);
if (!$bodyPart['FILENAME'] && strpos(strtolower($bodyPart['CONTENT-TYPE']), 'text/') === 0)
{
if (strtolower($bodyPart['CONTENT-TYPE']) == 'text/html')
{
$htmlBody = $bodyPart['BODY'];
$textBody = html_entity_decode(htmlToTxt($bodyPart['BODY']), ENT_QUOTES | ENT_HTML401, $charset);
}
else
{
$textBody = $bodyPart['BODY'];
}
}
else
{
$parts[] = $bodyPart;
}
}
return array($header, $htmlBody, $textBody, $parts);
}
}