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@@ -0,0 +1,803 @@
+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2004-2009 Chris Corbyn
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+//@require 'Swift/Mime/HeaderSet.php';
+//@require 'Swift/OutputByteStream.php';
+//@require 'Swift/Mime/ContentEncoder.php';
+//@require 'Swift/KeyCache.php';
+
+/**
+ * A MIME entity, in a multipart message.
+ * @package Swift
+ * @subpackage Mime
+ * @author Chris Corbyn
+ */
+class Swift_Mime_SimpleMimeEntity implements Swift_Mime_MimeEntity
+{
+
+ /** A collection of Headers for this mime entity */
+ private $_headers;
+
+ /** The body as a string, or a stream */
+ private $_body;
+
+ /** The encoder that encodes the body into a streamable format */
+ private $_encoder;
+
+ /** A mime bounary, if any is used */
+ private $_boundary;
+
+ /** Mime types to be used based on the nesting level */
+ private $_compositeRanges = array(
+ 'multipart/mixed' => array(self::LEVEL_TOP, self::LEVEL_MIXED),
+ 'multipart/alternative' => array(self::LEVEL_MIXED, self::LEVEL_ALTERNATIVE),
+ 'multipart/related' => array(self::LEVEL_ALTERNATIVE, self::LEVEL_RELATED)
+ );
+
+ /** A set of filter rules to define what level an entity should be nested at */
+ private $_compoundLevelFilters = array();
+
+ /** The nesting level of this entity */
+ private $_nestingLevel = self::LEVEL_ALTERNATIVE;
+
+ /** A KeyCache instance used during encoding and streaming */
+ private $_cache;
+
+ /** Direct descendants of this entity */
+ private $_immediateChildren = array();
+
+ /** All descendants of this entity */
+ private $_children = array();
+
+ /** The maximum line length of the body of this entity */
+ private $_maxLineLength = 78;
+
+ /** The order in which alternative mime types should appear */
+ private $_alternativePartOrder = array(
+ 'text/plain' => 1,
+ 'text/html' => 2,
+ 'multipart/related' => 3
+ );
+
+ /** The CID of this entity */
+ private $_id;
+
+ /** The key used for accessing the cache */
+ private $_cacheKey;
+
+ protected $_userContentType;
+
+ /**
+ * Create a new SimpleMimeEntity with $headers, $encoder and $cache.
+ * @param Swift_Mime_HeaderSet $headers
+ * @param Swift_Mime_ContentEncoder $encoder
+ * @param Swift_KeyCache $cache
+ */
+ public function __construct(Swift_Mime_HeaderSet $headers,
+ Swift_Mime_ContentEncoder $encoder, Swift_KeyCache $cache)
+ {
+ $this->_cacheKey = uniqid();
+ $this->_cache = $cache;
+ $this->_headers = $headers;
+ $this->setEncoder($encoder);
+ $this->_headers->defineOrdering(
+ array('Content-Type', 'Content-Transfer-Encoding')
+ );
+
+ // This array specifies that, when the entire MIME document contains
+ // $compoundLevel, then for each child within $level, if its Content-Type
+ // is $contentType then it should be treated as if it's level is
+ // $neededLevel instead. I tried to write that unambiguously! :-\
+ // Data Structure:
+ // array (
+ // $compoundLevel => array(
+ // $level => array(
+ // $contentType => $neededLevel
+ // )
+ // )
+ // )
+
+ $this->_compoundLevelFilters = array(
+ (self::LEVEL_ALTERNATIVE + self::LEVEL_RELATED) => array(
+ self::LEVEL_ALTERNATIVE => array(
+ 'text/plain' => self::LEVEL_ALTERNATIVE,
+ 'text/html' => self::LEVEL_RELATED
+ )
+ )
+ );
+
+ $this->_id = $this->getRandomId();
+ }
+
+ /**
+ * Generate a new Content-ID or Message-ID for this MIME entity.
+ * @return string
+ */
+ public function generateId()
+ {
+ $this->setId($this->getRandomId());
+ return $this->_id;
+ }
+
+ /**
+ * Get the {@link Swift_Mime_HeaderSet} for this entity.
+ * @return Swift_Mime_HeaderSet
+ */
+ public function getHeaders()
+ {
+ return $this->_headers;
+ }
+
+ /**
+ * Get the nesting level of this entity.
+ * @return int
+ * @see LEVEL_TOP, LEVEL_MIXED, LEVEL_RELATED, LEVEL_ALTERNATIVE
+ */
+ public function getNestingLevel()
+ {
+ return $this->_nestingLevel;
+ }
+
+ /**
+ * Get the Content-type of this entity.
+ * @return string
+ */
+ public function getContentType()
+ {
+ return $this->_getHeaderFieldModel('Content-Type');
+ }
+
+ /**
+ * Set the Content-type of this entity.
+ * @param string $type
+ */
+ public function setContentType($type)
+ {
+ $this->_setContentTypeInHeaders($type);
+ // Keep track of the value so that if the content-type changes automatically
+ // due to added child entities, it can be restored if they are later removed
+ $this->_userContentType = $type;
+ return $this;
+ }
+
+ /**
+ * Get the CID of this entity.
+ * The CID will only be present in headers if a Content-ID header is present.
+ * @return string
+ */
+ public function getId()
+ {
+ return $this->_headers->has($this->_getIdField())
+ ? current((array) $this->_getHeaderFieldModel($this->_getIdField()))
+ : $this->_id;
+ }
+
+ /**
+ * Set the CID of this entity.
+ * @param string $id
+ */
+ public function setId($id)
+ {
+ if (!$this->_setHeaderFieldModel($this->_getIdField(), $id))
+ {
+ $this->_headers->addIdHeader($this->_getIdField(), $id);
+ }
+ $this->_id = $id;
+ return $this;
+ }
+
+ /**
+ * Get the description of this entity.
+ * This value comes from the Content-Description header if set.
+ * @return string
+ */
+ public function getDescription()
+ {
+ return $this->_getHeaderFieldModel('Content-Description');
+ }
+
+ /**
+ * Set the description of this entity.
+ * This method sets a value in the Content-ID header.
+ * @param string $description
+ */
+ public function setDescription($description)
+ {
+ if (!$this->_setHeaderFieldModel('Content-Description', $description))
+ {
+ $this->_headers->addTextHeader('Content-Description', $description);
+ }
+ return $this;
+ }
+
+ /**
+ * Get the maximum line length of the body of this entity.
+ * @return int
+ */
+ public function getMaxLineLength()
+ {
+ return $this->_maxLineLength;
+ }
+
+ /**
+ * Set the maximum line length of lines in this body.
+ * Though not enforced by the library, lines should not exceed 1000 chars.
+ * @param int $length
+ */
+ public function setMaxLineLength($length)
+ {
+ $this->_maxLineLength = $length;
+ return $this;
+ }
+
+ /**
+ * Get all children added to this entity.
+ * @return array of Swift_Mime_Entity
+ */
+ public function getChildren()
+ {
+ return $this->_children;
+ }
+
+ /**
+ * Set all children of this entity.
+ * @param array $children Swiift_Mime_Entity instances
+ * @param int $compoundLevel For internal use only
+ */
+ public function setChildren(array $children, $compoundLevel = null)
+ {
+ //TODO: Try to refactor this logic
+
+ $compoundLevel = isset($compoundLevel)
+ ? $compoundLevel
+ : $this->_getCompoundLevel($children)
+ ;
+
+ $immediateChildren = array();
+ $grandchildren = array();
+ $newContentType = $this->_userContentType;
+
+ foreach ($children as $child)
+ {
+ $level = $this->_getNeededChildLevel($child, $compoundLevel);
+ if (empty($immediateChildren)) //first iteration
+ {
+ $immediateChildren = array($child);
+ }
+ else
+ {
+ $nextLevel = $this->_getNeededChildLevel($immediateChildren[0], $compoundLevel);
+ if ($nextLevel == $level)
+ {
+ $immediateChildren[] = $child;
+ }
+ elseif ($level < $nextLevel)
+ {
+ //Re-assign immediateChildren to grandchilden
+ $grandchildren = array_merge($grandchildren, $immediateChildren);
+ //Set new children
+ $immediateChildren = array($child);
+ }
+ else
+ {
+ $grandchildren[] = $child;
+ }
+ }
+ }
+
+ if (!empty($immediateChildren))
+ {
+ $lowestLevel = $this->_getNeededChildLevel($immediateChildren[0], $compoundLevel);
+
+ //Determine which composite media type is needed to accomodate the
+ // immediate children
+ foreach ($this->_compositeRanges as $mediaType => $range)
+ {
+ if ($lowestLevel > $range[0]
+ && $lowestLevel <= $range[1])
+ {
+ $newContentType = $mediaType;
+ break;
+ }
+ }
+
+ //Put any grandchildren in a subpart
+ if (!empty($grandchildren))
+ {
+ $subentity = $this->_createChild();
+ $subentity->_setNestingLevel($lowestLevel);
+ $subentity->setChildren($grandchildren, $compoundLevel);
+ array_unshift($immediateChildren, $subentity);
+ }
+ }
+
+ $this->_immediateChildren = $immediateChildren;
+ $this->_children = $children;
+ $this->_setContentTypeInHeaders($newContentType);
+ $this->_fixHeaders();
+ $this->_sortChildren();
+
+ return $this;
+ }
+
+ /**
+ * Get the body of this entity as a string.
+ * @return string
+ */
+ public function getBody()
+ {
+ return ($this->_body instanceof Swift_OutputByteStream)
+ ? $this->_readStream($this->_body)
+ : $this->_body;
+ }
+
+ /**
+ * Set the body of this entity, either as a string, or as an instance of
+ * {@link Swift_OutputByteStream}.
+ * @param mixed $body
+ * @param string $contentType optional
+ */
+ public function setBody($body, $contentType = null)
+ {
+ if ($body !== $this->_body)
+ {
+ $this->_clearCache();
+ }
+
+ $this->_body = $body;
+ if (isset($contentType))
+ {
+ $this->setContentType($contentType);
+ }
+ return $this;
+ }
+
+ /**
+ * Get the encoder used for the body of this entity.
+ * @return Swift_Mime_ContentEncoder
+ */
+ public function getEncoder()
+ {
+ return $this->_encoder;
+ }
+
+ /**
+ * Set the encoder used for the body of this entity.
+ * @param Swift_Mime_ContentEncoder $encoder
+ */
+ public function setEncoder(Swift_Mime_ContentEncoder $encoder)
+ {
+ if ($encoder !== $this->_encoder)
+ {
+ $this->_clearCache();
+ }
+
+ $this->_encoder = $encoder;
+ $this->_setEncoding($encoder->getName());
+ $this->_notifyEncoderChanged($encoder);
+ return $this;
+ }
+
+ /**
+ * Get the boundary used to separate children in this entity.
+ * @return string
+ */
+ public function getBoundary()
+ {
+ if (!isset($this->_boundary))
+ {
+ $this->_boundary = '_=_swift_v4_' . time() . uniqid() . '_=_';
+ }
+ return $this->_boundary;
+ }
+
+ /**
+ * Set the boundary used to separate children in this entity.
+ * @param string $boundary
+ * @throws Swift_RfcComplianceException
+ */
+ public function setBoundary($boundary)
+ {
+ $this->_assertValidBoundary($boundary);
+ $this->_boundary = $boundary;
+ return $this;
+ }
+
+ /**
+ * Receive notification that the charset of this entity, or a parent entity
+ * has changed.
+ * @param string $charset
+ */
+ public function charsetChanged($charset)
+ {
+ $this->_notifyCharsetChanged($charset);
+ }
+
+ /**
+ * Receive notification that the encoder of this entity or a parent entity
+ * has changed.
+ * @param Swift_Mime_ContentEncoder $encoder
+ */
+ public function encoderChanged(Swift_Mime_ContentEncoder $encoder)
+ {
+ $this->_notifyEncoderChanged($encoder);
+ }
+
+ /**
+ * Get this entire entity as a string.
+ * @return string
+ */
+ public function toString()
+ {
+ $string = $this->_headers->toString();
+ if (isset($this->_body) && empty($this->_immediateChildren))
+ {
+ if ($this->_cache->hasKey($this->_cacheKey, 'body'))
+ {
+ $body = $this->_cache->getString($this->_cacheKey, 'body');
+ }
+ else
+ {
+ $body = "\r\n" . $this->_encoder->encodeString($this->getBody(), 0,
+ $this->getMaxLineLength()
+ );
+ $this->_cache->setString($this->_cacheKey, 'body', $body,
+ Swift_KeyCache::MODE_WRITE
+ );
+ }
+ $string .= $body;
+ }
+
+ if (!empty($this->_immediateChildren))
+ {
+ foreach ($this->_immediateChildren as $child)
+ {
+ $string .= "\r\n\r\n--" . $this->getBoundary() . "\r\n";
+ $string .= $child->toString();
+ }
+ $string .= "\r\n\r\n--" . $this->getBoundary() . "--\r\n";
+ }
+
+ return $string;
+ }
+
+ /**
+ * Returns a string representation of this object.
+ *
+ * @return string
+ *
+ * @see toString()
+ */
+ public function __toString()
+ {
+ return $this->toString();
+ }
+
+ /**
+ * Write this entire entity to a {@link Swift_InputByteStream}.
+ * @param Swift_InputByteStream
+ */
+ public function toByteStream(Swift_InputByteStream $is)
+ {
+ $is->write($this->_headers->toString());
+ $is->commit();
+
+ if (empty($this->_immediateChildren))
+ {
+ if (isset($this->_body))
+ {
+ if ($this->_cache->hasKey($this->_cacheKey, 'body'))
+ {
+ $this->_cache->exportToByteStream($this->_cacheKey, 'body', $is);
+ }
+ else
+ {
+ $cacheIs = $this->_cache->getInputByteStream($this->_cacheKey, 'body');
+ if ($cacheIs)
+ {
+ $is->bind($cacheIs);
+ }
+
+ $is->write("\r\n");
+
+ if ($this->_body instanceof Swift_OutputByteStream)
+ {
+ $this->_body->setReadPointer(0);
+
+ $this->_encoder->encodeByteStream($this->_body, $is, 0,
+ $this->getMaxLineLength()
+ );
+ }
+ else
+ {
+ $is->write($this->_encoder->encodeString(
+ $this->getBody(), 0, $this->getMaxLineLength()
+ ));
+ }
+
+ if ($cacheIs)
+ {
+ $is->unbind($cacheIs);
+ }
+ }
+ }
+ }
+
+ if (!empty($this->_immediateChildren))
+ {
+ foreach ($this->_immediateChildren as $child)
+ {
+ $is->write("\r\n\r\n--" . $this->getBoundary() . "\r\n");
+ $child->toByteStream($is);
+ }
+ $is->write("\r\n\r\n--" . $this->getBoundary() . "--\r\n");
+ }
+ }
+
+ // -- Protected methods
+
+ /**
+ * Get the name of the header that provides the ID of this entity */
+ protected function _getIdField()
+ {
+ return 'Content-ID';
+ }
+
+ /**
+ * Get the model data (usually an array or a string) for $field.
+ */
+ protected function _getHeaderFieldModel($field)
+ {
+ if ($this->_headers->has($field))
+ {
+ return $this->_headers->get($field)->getFieldBodyModel();
+ }
+ }
+
+ /**
+ * Set the model data for $field.
+ */
+ protected function _setHeaderFieldModel($field, $model)
+ {
+ if ($this->_headers->has($field))
+ {
+ $this->_headers->get($field)->setFieldBodyModel($model);
+ return true;
+ }
+ else
+ {
+ return false;
+ }
+ }
+
+ /**
+ * Get the parameter value of $parameter on $field header.
+ */
+ protected function _getHeaderParameter($field, $parameter)
+ {
+ if ($this->_headers->has($field))
+ {
+ return $this->_headers->get($field)->getParameter($parameter);
+ }
+ }
+
+ /**
+ * Set the parameter value of $parameter on $field header.
+ */
+ protected function _setHeaderParameter($field, $parameter, $value)
+ {
+ if ($this->_headers->has($field))
+ {
+ $this->_headers->get($field)->setParameter($parameter, $value);
+ return true;
+ }
+ else
+ {
+ return false;
+ }
+ }
+
+ /**
+ * Re-evaluate what content type and encoding should be used on this entity.
+ */
+ protected function _fixHeaders()
+ {
+ if (count($this->_immediateChildren))
+ {
+ $this->_setHeaderParameter('Content-Type', 'boundary',
+ $this->getBoundary()
+ );
+ $this->_headers->remove('Content-Transfer-Encoding');
+ }
+ else
+ {
+ $this->_setHeaderParameter('Content-Type', 'boundary', null);
+ $this->_setEncoding($this->_encoder->getName());
+ }
+ }
+
+ /**
+ * Get the KeyCache used in this entity.
+ */
+ protected function _getCache()
+ {
+ return $this->_cache;
+ }
+
+ /**
+ * Empty the KeyCache for this entity.
+ */
+ protected function _clearCache()
+ {
+ $this->_cache->clearKey($this->_cacheKey, 'body');
+ }
+
+ /**
+ * Returns a random Content-ID or Message-ID.
+ * @return string
+ */
+ protected function getRandomId()
+ {
+ $idLeft = time() . '.' . uniqid();
+ $idRight = !empty($_SERVER['SERVER_NAME'])
+ ? $_SERVER['SERVER_NAME']
+ : 'swift.generated';
+ return $idLeft . '@' . $idRight;
+ }
+
+ // -- Private methods
+
+ private function _readStream(Swift_OutputByteStream $os)
+ {
+ $string = '';
+ while (false !== $bytes = $os->read(8192))
+ {
+ $string .= $bytes;
+ }
+ return $string;
+ }
+
+ private function _setEncoding($encoding)
+ {
+ if (!$this->_setHeaderFieldModel('Content-Transfer-Encoding', $encoding))
+ {
+ $this->_headers->addTextHeader('Content-Transfer-Encoding', $encoding);
+ }
+ }
+
+ private function _assertValidBoundary($boundary)
+ {
+ if (!preg_match(
+ '/^[a-z0-9\'\(\)\+_\-,\.\/:=\?\ ]{0,69}[a-z0-9\'\(\)\+_\-,\.\/:=\?]$/Di',
+ $boundary))
+ {
+ throw new Swift_RfcComplianceException('Mime boundary set is not RFC 2046 compliant.');
+ }
+ }
+
+ private function _setContentTypeInHeaders($type)
+ {
+ if (!$this->_setHeaderFieldModel('Content-Type', $type))
+ {
+ $this->_headers->addParameterizedHeader('Content-Type', $type);
+ }
+ }
+
+ private function _setNestingLevel($level)
+ {
+ $this->_nestingLevel = $level;
+ }
+
+ private function _getCompoundLevel($children)
+ {
+ $level = 0;
+ foreach ($children as $child)
+ {
+ $level |= $child->getNestingLevel();
+ }
+ return $level;
+ }
+
+ private function _getNeededChildLevel($child, $compoundLevel)
+ {
+ $filter = array();
+ foreach ($this->_compoundLevelFilters as $bitmask => $rules)
+ {
+ if (($compoundLevel & $bitmask) === $bitmask)
+ {
+ $filter = $rules + $filter;
+ }
+ }
+
+ $realLevel = $child->getNestingLevel();
+ $lowercaseType = strtolower($child->getContentType());
+
+ if (isset($filter[$realLevel])
+ && isset($filter[$realLevel][$lowercaseType]))
+ {
+ return $filter[$realLevel][$lowercaseType];
+ }
+ else
+ {
+ return $realLevel;
+ }
+ }
+
+ private function _createChild()
+ {
+ return new self($this->_headers->newInstance(),
+ $this->_encoder, $this->_cache);
+ }
+
+ private function _notifyEncoderChanged(Swift_Mime_ContentEncoder $encoder)
+ {
+ foreach ($this->_immediateChildren as $child)
+ {
+ $child->encoderChanged($encoder);
+ }
+ }
+
+ private function _notifyCharsetChanged($charset)
+ {
+ $this->_encoder->charsetChanged($charset);
+ $this->_headers->charsetChanged($charset);
+ foreach ($this->_immediateChildren as $child)
+ {
+ $child->charsetChanged($charset);
+ }
+ }
+
+ private function _sortChildren()
+ {
+ $shouldSort = false;
+ foreach ($this->_immediateChildren as $child)
+ {
+ //NOTE: This include alternative parts moved into a related part
+ if ($child->getNestingLevel() == self::LEVEL_ALTERNATIVE)
+ {
+ $shouldSort = true;
+ break;
+ }
+ }
+
+ //Sort in order of preference, if there is one
+ if ($shouldSort)
+ {
+ usort($this->_immediateChildren, array($this, '_childSortAlgorithm'));
+ }
+ }
+
+ private function _childSortAlgorithm($a, $b)
+ {
+ $typePrefs = array();
+ $types = array(
+ strtolower($a->getContentType()),
+ strtolower($b->getContentType())
+ );
+ foreach ($types as $type)
+ {
+ $typePrefs[] = (array_key_exists($type, $this->_alternativePartOrder))
+ ? $this->_alternativePartOrder[$type]
+ : (max($this->_alternativePartOrder) + 1);
+ }
+ return ($typePrefs[0] >= $typePrefs[1]) ? 1 : -1;
+ }
+
+ // -- Destructor
+
+ /**
+ * Empties it's own contents from the cache.
+ */
+ public function __destruct()
+ {
+ $this->_cache->clearAll($this->_cacheKey);
+ }
+
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 17:50:45 +0000