mirror of
https://github.com/the-djmaze/snappymail.git
synced 2026-08-28 19:49:20 +03:00
794 lines
17 KiB
PHP
794 lines
17 KiB
PHP
<?php
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/*
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* This file is part of MailSo.
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*
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* (c) 2014 Usenko Timur
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace MailSo\Imap;
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/**
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* @category MailSo
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* @package Imap
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*/
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class BodyStructure
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{
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/**
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* @var string
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*/
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private $sContentType;
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/**
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* @var string
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*/
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private $sCharset;
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/**
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* @var array
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*/
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private $aBodyParams;
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/**
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* @var string
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*/
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private $sContentID;
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/**
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* @var string
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*/
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private $sDescription;
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/**
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* @var string
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*/
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private $sMailEncodingName;
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/**
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* @var string
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*/
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private $sDisposition;
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/**
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* @var array
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*/
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private $aDispositionParams;
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/**
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* @var string
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*/
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private $sFileName;
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/**
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* @var string
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*/
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private $sLanguage;
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/**
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* @var string
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*/
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private $sLocation;
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/**
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* @var int
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*/
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private $iSize;
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/**
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* @var int
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*/
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private $iTextLineCount;
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/**
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* @var string
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*/
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private $sPartID;
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/**
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* @var array
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*/
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private $aSubParts;
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function __construct(string $sContentType, ?string $sCharset, array $aBodyParams, ?string $sContentID,
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?string $sDescription, ?string $sMailEncodingName, ?string $sDisposition, ?array $aDispositionParams, string $sFileName,
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?string $sLanguage, ?string $sLocation, int $iSize, int $iTextLineCount, string $sPartID, array $aSubParts)
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{
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$this->sContentType = $sContentType;
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$this->sCharset = $sCharset;
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$this->aBodyParams = $aBodyParams;
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$this->sContentID = $sContentID;
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$this->sDescription = $sDescription;
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$this->sMailEncodingName = $sMailEncodingName;
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$this->sDisposition = $sDisposition;
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$this->aDispositionParams = $aDispositionParams;
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$this->sFileName = $sFileName;
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$this->sLanguage = $sLanguage;
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$this->sLocation = $sLocation;
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$this->iSize = $iSize;
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$this->iTextLineCount = $iTextLineCount;
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$this->sPartID = $sPartID;
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$this->aSubParts = $aSubParts;
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}
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public function MailEncodingName() : ?string
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{
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return $this->sMailEncodingName;
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}
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public function PartID() : string
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{
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return (string) $this->sPartID;
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}
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public function FileName() : string
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{
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return $this->sFileName;
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}
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public function ContentType() : string
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{
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return $this->sContentType;
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}
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public function Size() : int
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{
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return $this->iSize;
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}
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public function EstimatedSize() : int
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{
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$fCoefficient = 1;
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switch (\strtolower($this->MailEncodingName()))
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{
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case 'base64':
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$fCoefficient = 0.75;
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break;
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case 'quoted-printable':
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$fCoefficient = 0.44;
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break;
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}
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return (int) ($this->Size() * $fCoefficient);
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}
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public function Charset() : ?string
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{
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return $this->sCharset;
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}
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public function ContentID() : string
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{
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return (null === $this->sContentID) ? '' : $this->sContentID;
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}
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public function ContentLocation() : string
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{
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return (null === $this->sLocation) ? '' : $this->sLocation;
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}
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public function IsInline() : bool
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{
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return (null === $this->sDisposition) ?
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(0 < \strlen($this->ContentID())) : ('inline' === strtolower($this->sDisposition));
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}
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public function IsImage() : bool
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{
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return 'image' === \MailSo\Base\Utils::ContentTypeType($this->ContentType(), $this->FileName());
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}
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public function IsArchive() : bool
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{
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return 'archive' === \MailSo\Base\Utils::ContentTypeType($this->ContentType(), $this->FileName());
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}
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public function IsPdf() : bool
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{
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return 'pdf' === \MailSo\Base\Utils::ContentTypeType($this->ContentType(), $this->FileName());
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}
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public function IsDoc() : bool
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{
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return 'doc' === \MailSo\Base\Utils::ContentTypeType($this->ContentType(), $this->FileName());
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}
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public function IsPgpSignature() : bool
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{
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return \in_array(\strtolower($this->ContentType()),
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array('application/pgp-signature', 'application/pkcs7-signature'));
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}
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public function IsAttachBodyPart() : bool
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{
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$bResult = (
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(null !== $this->sDisposition && 'attachment' === \strtolower($this->sDisposition))
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);
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if (!$bResult && null !== $this->sContentType)
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{
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$sContentType = \strtolower($this->sContentType);
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$bResult = false === \strpos($sContentType, 'multipart/') &&
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'text/html' !== $sContentType && 'text/plain' !== $sContentType;
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}
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return $bResult;
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}
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public function IsFlowedFormat() : bool
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{
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$bResult = !empty($this->aBodyParams['format']) &&
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'flowed' === \strtolower(\trim($this->aBodyParams['format']));
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if ($bResult && \in_array(\strtolower($this->MailEncodingName()), array('base64', 'quoted-printable')))
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{
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$bResult = false;
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}
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return $bResult;
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}
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public function SearchPlainParts() : array
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{
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$aReturn = array();
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$aParts = $this->SearchByContentType('text/plain');
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foreach ($aParts as $oPart)
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{
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if (!$oPart->IsAttachBodyPart())
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{
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$aReturn[] = $oPart;
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}
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}
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return $aReturn;
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}
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public function SearchHtmlParts() : array
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{
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$aReturn = array();
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$aParts = $this->SearchByContentType('text/html');
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foreach ($aParts as $oPart)
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{
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if (!$oPart->IsAttachBodyPart())
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{
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$aReturn[] = $oPart;
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}
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}
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return $aReturn;
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}
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public function SearchInlineEncryptedPart() : ?self
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{
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if ('multipart/encrypted' === \strtolower($this->ContentType()))
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{
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$aSearchParts = $this->SearchByCallback(function ($oItem) {
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return $oItem->IsInline();
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});
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if (1 === \count($aSearchParts) && isset($aSearchParts[0]))
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{
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return $aSearchParts[0];
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}
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}
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return null;
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}
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public function SearchHtmlOrPlainParts() : array
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{
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$mResult = $this->SearchHtmlParts() ?: $this->SearchPlainParts();
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if (!$mResult)
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{
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$oPart = $this->SearchInlineEncryptedPart();
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if ($oPart instanceof self)
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{
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$mResult = array($oPart);
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}
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}
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return $mResult;
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}
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public function SearchCharset() : string
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{
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$sResult = '';
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$mParts = \array_merge($this->SearchHtmlParts(), $this->SearchPlainParts());
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foreach ($mParts as $oPart)
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{
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$sResult = $oPart ? $oPart->Charset() : '';
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if ($sResult)
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{
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break;
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}
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}
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if (!$sResult)
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{
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$aParts = $this->SearchAttachmentsParts();
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foreach ($aParts as $oPart)
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{
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$sResult = $oPart ? $oPart->Charset() : '';
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if ($sResult)
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{
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break;
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}
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}
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}
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return $sResult ?: '';
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}
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/**
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* @param mixed $fCallback
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*/
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public function SearchByCallback($fCallback) : array
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{
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$aReturn = array();
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if (\call_user_func($fCallback, $this))
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{
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$aReturn[] = $this;
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}
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foreach ($this->aSubParts as /* @var $oSubPart \MailSo\Imap\BodyStructure */ $oSubPart)
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{
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$aReturn = \array_merge($aReturn, $oSubPart->SearchByCallback($fCallback));
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}
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return $aReturn;
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}
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public function SearchAttachmentsParts() : array
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{
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return $this->SearchByCallback(function ($oItem) {
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return $oItem->IsAttachBodyPart();
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});
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}
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public function SearchByContentType(string $sContentType) : array
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{
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$sContentType = \strtolower($sContentType);
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return $this->SearchByCallback(function ($oItem) use ($sContentType) {
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return $sContentType === $oItem->ContentType();
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});
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}
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public function GetPartByMimeIndex(string $sMimeIndex) : self
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{
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$oPart = null;
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if (0 < \strlen($sMimeIndex))
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{
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if ($sMimeIndex === $this->sPartID)
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{
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$oPart = $this;
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}
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if (null === $oPart)
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{
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foreach ($this->aSubParts as /* @var $oSubPart \MailSo\Imap\BodyStructure */ $oSubPart)
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{
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$oPart = $oSubPart->GetPartByMimeIndex($sMimeIndex);
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if (null !== $oPart)
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{
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break;
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}
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}
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}
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}
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return $oPart;
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}
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private static function decodeAttrParameter(array $aParams, string $sParamName, string $sCharset = \MailSo\Base\Enumerations\Charset::UTF_8) : string
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{
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$sResult = '';
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if (isset($aParams[$sParamName]))
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{
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$sResult = \MailSo\Base\Utils::DecodeHeaderValue($aParams[$sParamName], $sCharset);
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}
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else if (isset($aParams[$sParamName.'*']))
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{
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$aValueParts = \explode("''", $aParams[$sParamName.'*'], 2);
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if (2 === \count($aValueParts))
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{
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$sCharset = isset($aValueParts[0]) ? $aValueParts[0] : \MailSo\Base\Enumerations\Charset::UTF_8;
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$sResult = \MailSo\Base\Utils::ConvertEncoding(
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\urldecode($aValueParts[1]), $sCharset, \MailSo\Base\Enumerations\Charset::UTF_8);
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}
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else
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{
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$sResult = \urldecode($aParams[$sParamName.'*']);
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}
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}
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else
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{
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$sCharset = '';
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$sCharsetIndex = -1;
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$aFileNames = array();
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foreach ($aParams as $sName => $sValue)
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{
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$aMatches = array();
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if (\preg_match('/^'.\preg_quote($sParamName, '/').'\*([0-9]+)\*$/i', $sName, $aMatches))
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{
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$iIndex = (int) $aMatches[1];
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if ($sCharsetIndex < $iIndex && false !== \strpos($sValue, "''"))
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{
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$aValueParts = \explode("''", $sValue, 2);
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if (2 === \count($aValueParts) && 0 < \strlen($aValueParts[0]))
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{
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$sCharsetIndex = $iIndex;
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$sCharset = $aValueParts[0];
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$sValue = $aValueParts[1];
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}
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}
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$aFileNames[$iIndex] = $sValue;
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}
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}
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if (0 < \count($aFileNames))
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{
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\ksort($aFileNames, SORT_NUMERIC);
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$sResult = \implode(\array_values($aFileNames));
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$sResult = \urldecode($sResult);
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if (0 < \strlen($sCharset))
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{
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$sResult = \MailSo\Base\Utils::ConvertEncoding($sResult,
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$sCharset, \MailSo\Base\Enumerations\Charset::UTF_8);
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}
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}
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}
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return $sResult;
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}
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public static function NewInstance(array $aBodyStructure, string $sPartID = '') : ?self
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{
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if (2 > \count($aBodyStructure))
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{
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return null;
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}
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$sBodyMainType = null;
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if (\is_string($aBodyStructure[0]) && 'NIL' !== $aBodyStructure[0])
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{
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$sBodyMainType = $aBodyStructure[0];
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}
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$sBodySubType = null;
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$sContentType = '';
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$aSubParts = array();
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$aBodyParams = array();
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$sName = null;
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$sCharset = null;
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$sContentID = null;
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$sDescription = null;
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$sMailEncodingName = null;
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$iSize = 0;
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$iTextLineCount = 0; // valid for rfc822/message and text parts
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$iExtraItemPos = 0; // list index of items which have no well-established position (such as 0, 1, 5, etc).
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if (null === $sBodyMainType)
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{
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// Process multipart body structure
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if (!\is_array($aBodyStructure[0]))
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{
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return null;
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}
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$sBodyMainType = 'multipart';
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$sSubPartIDPrefix = '';
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if (0 === \strlen($sPartID) || '.' === $sPartID[\strlen($sPartID) - 1])
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{
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// This multi-part is root part of message.
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$sSubPartIDPrefix = $sPartID;
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$sPartID .= 'TEXT';
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}
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else if (0 < \strlen($sPartID))
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{
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// This multi-part is a part of another multi-part.
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$sSubPartIDPrefix = $sPartID.'.';
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}
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$iIndex = 1;
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while ($iExtraItemPos < \count($aBodyStructure) && \is_array($aBodyStructure[$iExtraItemPos]))
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{
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$oPart = self::NewInstance($aBodyStructure[$iExtraItemPos], $sSubPartIDPrefix.$iIndex);
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if (null === $oPart)
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{
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return null;
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}
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// For multipart, we have no charset info in the part itself. Thus,
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// obtain charset from nested parts.
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if ($sCharset == null)
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{
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$sCharset = $oPart->Charset();
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}
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$aSubParts[] = $oPart;
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++$iExtraItemPos;
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++$iIndex;
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}
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if ($iExtraItemPos < \count($aBodyStructure))
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{
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if (!\is_string($aBodyStructure[$iExtraItemPos]) || 'NIL' === $aBodyStructure[$iExtraItemPos])
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{
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return null;
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}
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$sBodySubType = \strtolower($aBodyStructure[$iExtraItemPos]);
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++$iExtraItemPos;
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}
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if ($iExtraItemPos < \count($aBodyStructure))
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{
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$sBodyParamList = $aBodyStructure[$iExtraItemPos];
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if (\is_array($sBodyParamList))
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{
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$aBodyParams = self::getKeyValueListFromArrayList($sBodyParamList);
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}
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}
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++$iExtraItemPos;
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}
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else
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{
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// Process simple (singlepart) body structure
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if (7 > \count($aBodyStructure))
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{
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return null;
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}
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$sBodyMainType = \strtolower($sBodyMainType);
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if (!\is_string($aBodyStructure[1]) || 'NIL' === $aBodyStructure[1])
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{
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return null;
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}
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$sBodySubType = \strtolower($aBodyStructure[1]);
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$aBodyParamList = $aBodyStructure[2];
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if (\is_array($aBodyParamList))
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{
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$aBodyParams = self::getKeyValueListFromArrayList($aBodyParamList);
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if (isset($aBodyParams['charset']))
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{
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$sCharset = $aBodyParams['charset'];
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}
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$sName = self::decodeAttrParameter($aBodyParams, 'name', $sContentType);
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}
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if (null !== $aBodyStructure[3] && 'NIL' !== $aBodyStructure[3])
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{
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if (!\is_string($aBodyStructure[3]))
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{
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return null;
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}
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$sContentID = $aBodyStructure[3];
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}
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if (null !== $aBodyStructure[4] && 'NIL' !== $aBodyStructure[4])
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{
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if (!\is_string($aBodyStructure[4]))
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{
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return null;
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}
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$sDescription = $aBodyStructure[4];
|
|
}
|
|
|
|
if (null !== $aBodyStructure[5] && 'NIL' !== $aBodyStructure[5])
|
|
{
|
|
if (!\is_string($aBodyStructure[5]))
|
|
{
|
|
return null;
|
|
}
|
|
$sMailEncodingName = $aBodyStructure[5];
|
|
}
|
|
|
|
if (\is_numeric($aBodyStructure[6]))
|
|
{
|
|
$iSize = (int) $aBodyStructure[6];
|
|
}
|
|
else
|
|
{
|
|
$iSize = -1;
|
|
}
|
|
|
|
if (0 === \strlen($sPartID) || '.' === $sPartID[\strlen($sPartID) - 1])
|
|
{
|
|
// This is the only sub-part of the message (otherwise, it would be
|
|
// one of sub-parts of a multi-part, and partID would already be fully set up).
|
|
$sPartID .= '1';
|
|
}
|
|
|
|
$iExtraItemPos = 7;
|
|
if ('text' === $sBodyMainType)
|
|
{
|
|
if ($iExtraItemPos < \count($aBodyStructure))
|
|
{
|
|
if (\is_numeric($aBodyStructure[$iExtraItemPos]))
|
|
{
|
|
$iTextLineCount = (int) $aBodyStructure[$iExtraItemPos];
|
|
}
|
|
else
|
|
{
|
|
$iTextLineCount = -1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$iTextLineCount = -1;
|
|
}
|
|
|
|
++$iExtraItemPos;
|
|
}
|
|
else if ('message' === $sBodyMainType && 'rfc822' === $sBodySubType)
|
|
{
|
|
if ($iExtraItemPos + 2 < \count($aBodyStructure))
|
|
{
|
|
if (\is_numeric($aBodyStructure[$iExtraItemPos + 2]))
|
|
{
|
|
$iTextLineCount = (int) $aBodyStructure[$iExtraItemPos + 2];
|
|
}
|
|
else
|
|
{
|
|
$iTextLineCount = -1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$iTextLineCount = -1;
|
|
}
|
|
|
|
$iExtraItemPos += 3;
|
|
}
|
|
|
|
++$iExtraItemPos; // skip MD5 digest of the body because most mail servers leave it NIL anyway
|
|
}
|
|
|
|
$sContentType = $sBodyMainType.'/'.$sBodySubType;
|
|
|
|
$sDisposition = null;
|
|
$aDispositionParams = null;
|
|
$sFileName = null;
|
|
|
|
if ($iExtraItemPos < \count($aBodyStructure))
|
|
{
|
|
$aDispList = $aBodyStructure[$iExtraItemPos];
|
|
if (\is_array($aDispList) && 1 < \count($aDispList))
|
|
{
|
|
if (null !== $aDispList[0])
|
|
{
|
|
if (\is_string($aDispList[0]) && 'NIL' !== $aDispList[0])
|
|
{
|
|
$sDisposition = $aDispList[0];
|
|
}
|
|
else
|
|
{
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
|
|
$aDispParamList = $aDispList[1];
|
|
if (\is_array($aDispParamList))
|
|
{
|
|
$aDispositionParams = self::getKeyValueListFromArrayList($aDispParamList);
|
|
$sFileName = self::decodeAttrParameter($aDispositionParams, 'filename', $sCharset ?: '');
|
|
}
|
|
}
|
|
|
|
++$iExtraItemPos;
|
|
|
|
$sLanguage = null;
|
|
if ($iExtraItemPos < count($aBodyStructure))
|
|
{
|
|
if (null !== $aBodyStructure[$iExtraItemPos] && 'NIL' !== $aBodyStructure[$iExtraItemPos])
|
|
{
|
|
if (\is_array($aBodyStructure[$iExtraItemPos]))
|
|
{
|
|
$sLanguage = \implode(',', $aBodyStructure[$iExtraItemPos]);
|
|
}
|
|
else if (\is_string($aBodyStructure[$iExtraItemPos]))
|
|
{
|
|
$sLanguage = $aBodyStructure[$iExtraItemPos];
|
|
}
|
|
}
|
|
++$iExtraItemPos;
|
|
}
|
|
|
|
$sLocation = null;
|
|
if ($iExtraItemPos < \count($aBodyStructure))
|
|
{
|
|
if (null !== $aBodyStructure[$iExtraItemPos] && 'NIL' !== $aBodyStructure[$iExtraItemPos])
|
|
{
|
|
if (\is_string($aBodyStructure[$iExtraItemPos]))
|
|
{
|
|
$sLocation = $aBodyStructure[$iExtraItemPos];
|
|
}
|
|
}
|
|
++$iExtraItemPos;
|
|
}
|
|
|
|
return new self(
|
|
$sContentType,
|
|
$sCharset,
|
|
$aBodyParams,
|
|
$sContentID,
|
|
$sDescription,
|
|
$sMailEncodingName,
|
|
$sDisposition,
|
|
$aDispositionParams,
|
|
\MailSo\Base\Utils::Utf8Clear($sFileName ?: $sName),
|
|
$sLanguage,
|
|
$sLocation,
|
|
$iSize,
|
|
$iTextLineCount,
|
|
$sPartID,
|
|
$aSubParts
|
|
);
|
|
}
|
|
|
|
public static function NewInstanceFromRfc822SubPart(array $aBodyStructure, string $sSubPartID) : ?self
|
|
{
|
|
$aBodySubStructure = self::findPartByIndexInArray($aBodyStructure, $sSubPartID);
|
|
if ($aBodySubStructure && \is_array($aBodySubStructure) && isset($aBodySubStructure[8]))
|
|
{
|
|
return self::NewInstance($aBodySubStructure[8], $sSubPartID);
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
private static function findPartByIndexInArray(array $aList, string $sPartID) : ?array
|
|
{
|
|
$bFind = false;
|
|
$aPath = \explode('.', ''.$sPartID);
|
|
$aCurrentPart = $aList;
|
|
|
|
foreach ($aPath as $iPos => $iNum)
|
|
{
|
|
$iIndex = \intval($iNum) - 1;
|
|
if (0 <= $iIndex && 0 < $iPos ? isset($aCurrentPart[8][$iIndex]) : isset($aCurrentPart[$iIndex]))
|
|
{
|
|
$aCurrentPart = 0 < $iPos ? $aCurrentPart[8][$iIndex] : $aCurrentPart[$iIndex];
|
|
$bFind = true;
|
|
}
|
|
}
|
|
|
|
return $bFind ? $aCurrentPart : null;
|
|
}
|
|
|
|
/**
|
|
* Returns dict with key="charset" and value="US-ASCII" for array ("CHARSET" "US-ASCII").
|
|
* Keys are lowercased (StringDictionary itself does this), values are not altered.
|
|
*/
|
|
private static function getKeyValueListFromArrayList(array $aList) : array
|
|
{
|
|
$aDict = array();
|
|
if (0 === \count($aList) % 2)
|
|
{
|
|
for ($iIndex = 0, $iLen = \count($aList); $iIndex < $iLen; $iIndex += 2)
|
|
{
|
|
if (\is_string($aList[$iIndex]) && isset($aList[$iIndex + 1]) && \is_string($aList[$iIndex + 1]))
|
|
{
|
|
$aDict[\strtolower($aList[$iIndex])] = $aList[$iIndex + 1];
|
|
}
|
|
}
|
|
}
|
|
|
|
return $aDict;
|
|
}
|
|
}
|