FIX: Update swiftmailer librairies

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/EmailLexer.php

@@ -13,6 +13,8 @@ class EmailLexer extends AbstractLexer
     const S_BACKSLASH        = 92;
     const S_DOT              = 46;
     const S_DQUOTE           = 34;
+    const S_SQUOTE           = 39;
+    const S_BACKTICK         = 96;
     const S_OPENPARENTHESIS  = 49;
     const S_CLOSEPARENTHESIS = 261;
     const S_OPENBRACKET      = 262;
@@ -58,6 +60,8 @@ class EmailLexer extends AbstractLexer
         '/'    => self::S_SLASH,
         ','    => self::S_COMMA,
         '.'    => self::S_DOT,
+        "'"    => self::S_SQUOTE,
+        "`"    => self::S_BACKTICK,
         '"'    => self::S_DQUOTE,
         '-'    => self::S_HYPHEN,
         '::'   => self::S_DOUBLECOLON,
@@ -73,25 +77,73 @@ class EmailLexer extends AbstractLexer
         '\0'   => self::C_NUL,
     );
 
+    /**
+     * @var bool
+     */
     protected $hasInvalidTokens = false;
 
-    protected $previous;
+    /**
+     * @var array
+     *
+     * @psalm-var array{value:string, type:null|int, position:int}|array<empty, empty>
+     */
+    protected $previous = [];
+
+    /**
+     * The last matched/seen token.
+     *
+     * @var array
+     *
+     * @psalm-var array{value:string, type:null|int, position:int}
+     */
+    public $token;
+
+    /**
+     * The next token in the input.
+     *
+     * @var array|null
+     */
+    public $lookahead;
+
+    /**
+     * @psalm-var array{value:'', type:null, position:0}
+     */
+    private static $nullToken = [
+        'value' => '',
+        'type' => null,
+        'position' => 0,
+    ];
 
+    public function __construct()
+    {
+        $this->previous = $this->token = self::$nullToken;
+        $this->lookahead = null;
+    }
+
+    /**
+     * @return void
+     */
     public function reset()
     {
         $this->hasInvalidTokens = false;
         parent::reset();
+        $this->previous = $this->token = self::$nullToken;
     }
 
+    /**
+     * @return bool
+     */
     public function hasInvalidTokens()
     {
         return $this->hasInvalidTokens;
     }
 
     /**
-     * @param $type
+     * @param int $type
      * @throws \UnexpectedValueException
      * @return boolean
+     *
+     * @psalm-suppress InvalidScalarArgument
      */
     public function find($type)
     {
@@ -107,7 +159,7 @@ class EmailLexer extends AbstractLexer
     /**
      * getPrevious
      *
-     * @return array token
+     * @return array
      */
     public function getPrevious()
     {
@@ -122,8 +174,10 @@ class EmailLexer extends AbstractLexer
     public function moveNext()
     {
         $this->previous = $this->token;
+        $hasNext = parent::moveNext();
+        $this->token = $this->token ?: self::$nullToken;
 
-        return parent::moveNext();
+        return $hasNext;
     }
 
     /**
@@ -179,6 +233,11 @@ class EmailLexer extends AbstractLexer
         return  self::GENERIC;
     }
 
+    /**
+     * @param string $value
+     *
+     * @return bool
+     */
     protected function isValid($value)
     {
         if (isset($this->charValue[$value])) {
@@ -189,7 +248,7 @@ class EmailLexer extends AbstractLexer
     }
 
     /**
-     * @param $value
+     * @param string $value
      * @return bool
      */
     protected function isNullType($value)
@@ -202,7 +261,7 @@ class EmailLexer extends AbstractLexer
     }
 
     /**
-     * @param $value
+     * @param string $value
      * @return bool
      */
     protected function isUTF8Invalid($value)
@@ -214,6 +273,9 @@ class EmailLexer extends AbstractLexer
         return false;
     }
 
+    /**
+     * @return string
+     */
     protected function getModifiers()
     {
         return 'iu';

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/EmailParser.php

@@ -17,11 +17,33 @@ class EmailParser
 {
     const EMAIL_MAX_LENGTH = 254;
 
-    protected $warnings;
+    /**
+     * @var array
+     */
+    protected $warnings = [];
+
+    /**
+     * @var string
+     */
     protected $domainPart = '';
+
+    /**
+     * @var string
+     */
     protected $localPart = '';
+    /**
+     * @var EmailLexer
+     */
     protected $lexer;
+
+    /**
+     * @var LocalPart
+     */
     protected $localPartParser;
+
+    /**
+     * @var DomainPart
+     */
     protected $domainPartParser;
 
     public function __construct(EmailLexer $lexer)
@@ -29,11 +51,10 @@ class EmailParser
         $this->lexer = $lexer;
         $this->localPartParser = new LocalPart($this->lexer);
         $this->domainPartParser = new DomainPart($this->lexer);
-        $this->warnings = new \SplObjectStorage();
     }
 
     /**
-     * @param $str
+     * @param string $str
      * @return array
      */
     public function parse($str)
@@ -57,6 +78,9 @@ class EmailParser
         return array('local' => $this->localPart, 'domain' => $this->domainPart);
     }
 
+    /**
+     * @return Warning\Warning[]
+     */
     public function getWarnings()
     {
         $localPartWarnings = $this->localPartParser->getWarnings();
@@ -68,11 +92,17 @@ class EmailParser
         return $this->warnings;
     }
 
+    /**
+     * @return string
+     */
     public function getParsedDomainPart()
     {
         return $this->domainPart;
     }
 
+    /**
+     * @param string $email
+     */
     protected function setParts($email)
     {
         $parts = explode('@', $email);
@@ -80,6 +110,9 @@ class EmailParser
         $this->localPart = $parts[0];
     }
 
+    /**
+     * @return bool
+     */
     protected function hasAtToken()
     {
         $this->lexer->moveNext();

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/EmailValidator.php

@@ -13,12 +13,12 @@ class EmailValidator
     private $lexer;
 
     /**
-     * @var array
+     * @var Warning\Warning[]
      */
-    protected $warnings;
+    protected $warnings = [];
 
     /**
-     * @var InvalidEmail
+     * @var InvalidEmail|null
      */
     protected $error;
 
@@ -28,7 +28,7 @@ class EmailValidator
     }
 
     /**
-     * @param                 $email
+     * @param string          $email
      * @param EmailValidation $emailValidation
      * @return bool
      */
@@ -58,7 +58,7 @@ class EmailValidator
     }
 
     /**
-     * @return InvalidEmail
+     * @return InvalidEmail|null
      */
     public function getError()
     {

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Exception/DomainAcceptsNoMail.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace Egulias\EmailValidator\Exception;
+
+class DomainAcceptsNoMail extends InvalidEmail
+{
+    const CODE = 154;
+    const REASON = 'Domain accepts no mail (Null MX, RFC7505)';
+}

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Exception/ExpectingQPair.php

@@ -2,7 +2,7 @@
 
 namespace Egulias\EmailValidator\Exception;
 
-class ExpectedQPair extends InvalidEmail
+class ExpectingQPair extends InvalidEmail
 {
     const CODE = 136;
     const REASON = "Expecting QPAIR";

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Exception/LocalOrReservedDomain.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace Egulias\EmailValidator\Exception;
+
+class LocalOrReservedDomain extends InvalidEmail
+{
+    const CODE = 153;
+    const REASON = 'Local, mDNS or reserved domain (RFC2606, RFC6762)';
+}

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Exception/NoDNSRecord.php

@@ -2,8 +2,6 @@
 
 namespace Egulias\EmailValidator\Exception;
 
-use Egulias\EmailValidator\Exception\InvalidEmail;
-
 class NoDNSRecord extends InvalidEmail
 {
     const CODE = 5;

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Exception/UnclosedComment.php

@@ -5,5 +5,5 @@ namespace Egulias\EmailValidator\Exception;
 class UnclosedComment extends InvalidEmail
 {
     const CODE = 146;
-    const REASON = "No colosing comment token found";
+    const REASON = "No closing comment token found";
 }

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Parser/DomainPart.php

@@ -35,27 +35,18 @@ use Egulias\EmailValidator\Warning\TLD;
 class DomainPart extends Parser
 {
     const DOMAIN_MAX_LENGTH = 254;
+    const LABEL_MAX_LENGTH = 63;
+
+    /**
+     * @var string
+     */
     protected $domainPart = '';
 
     public function parse($domainPart)
     {
         $this->lexer->moveNext();
 
-        if ($this->lexer->token['type'] === EmailLexer::S_DOT) {
-            throw new DotAtStart();
-        }
-
-        if ($this->lexer->token['type'] === EmailLexer::S_EMPTY) {
-            throw new NoDomainPart();
-        }
-        if ($this->lexer->token['type'] === EmailLexer::S_HYPHEN) {
-            throw new DomainHyphened();
-        }
-
-        if ($this->lexer->token['type'] === EmailLexer::S_OPENPARENTHESIS) {
-            $this->warnings[DeprecatedComment::CODE] = new DeprecatedComment();
-            $this->parseDomainComments();
-        }
+        $this->performDomainStartChecks();
 
         $domain = $this->doParseDomainPart();
 
@@ -77,11 +68,50 @@ class DomainPart extends Parser
         $this->domainPart = $domain;
     }
 
+    private function performDomainStartChecks()
+    {
+        $this->checkInvalidTokensAfterAT();
+        $this->checkEmptyDomain();
+
+        if ($this->lexer->token['type'] === EmailLexer::S_OPENPARENTHESIS) {
+            $this->warnings[DeprecatedComment::CODE] = new DeprecatedComment();
+            $this->parseDomainComments();
+        }
+    }
+
+    private function checkEmptyDomain()
+    {
+        $thereIsNoDomain = $this->lexer->token['type'] === EmailLexer::S_EMPTY ||
+            ($this->lexer->token['type'] === EmailLexer::S_SP &&
+            !$this->lexer->isNextToken(EmailLexer::GENERIC));
+
+        if ($thereIsNoDomain) {
+            throw new NoDomainPart();
+        }
+    }
+
+    private function checkInvalidTokensAfterAT()
+    {
+        if ($this->lexer->token['type'] === EmailLexer::S_DOT) {
+            throw new DotAtStart();
+        }
+        if ($this->lexer->token['type'] === EmailLexer::S_HYPHEN) {
+            throw new DomainHyphened();
+        }
+    }
+
+    /**
+     * @return string
+     */
     public function getDomainPart()
     {
         return $this->domainPart;
     }
 
+    /**
+     * @param string $addressLiteral
+     * @param int $maxGroups
+     */
     public function checkIPV6Tag($addressLiteral, $maxGroups = 8)
     {
         $prev = $this->lexer->getPrevious();
@@ -125,9 +155,13 @@ class DomainPart extends Parser
         }
     }
 
+    /**
+     * @return string
+     */
     protected function doParseDomainPart()
     {
         $domain = '';
+        $label = '';
         $openedParenthesis = 0;
         do {
             $prev = $this->lexer->getPrevious();
@@ -158,7 +192,12 @@ class DomainPart extends Parser
                 $this->parseDomainLiteral();
             }
 
-            $this->checkLabelLength($prev);
+            if ($this->lexer->token['type'] === EmailLexer::S_DOT) {
+                $this->checkLabelLength($label);
+                $label = '';
+            } else {
+                $label .= $this->lexer->token['value'];
+            }
 
             if ($this->isFWS()) {
                 $this->parseFWS();
@@ -166,12 +205,17 @@ class DomainPart extends Parser
 
             $domain .= $this->lexer->token['value'];
             $this->lexer->moveNext();
-        } while ($this->lexer->token);
+            if ($this->lexer->token['type'] === EmailLexer::S_SP) {
+                throw new CharNotAllowed();
+            }
+        } while (null !== $this->lexer->token['type']);
+
+        $this->checkLabelLength($label);
 
         return $domain;
     }
 
-    private function checkNotAllowedChars($token)
+    private function checkNotAllowedChars(array $token)
     {
         $notAllowed = [EmailLexer::S_BACKSLASH => true, EmailLexer::S_SLASH=> true];
         if (isset($notAllowed[$token['type']])) {
@@ -179,6 +223,9 @@ class DomainPart extends Parser
         }
     }
 
+    /**
+     * @return string|false
+     */
     protected function parseDomainLiteral()
     {
         if ($this->lexer->isNextToken(EmailLexer::S_COLON)) {
@@ -195,6 +242,9 @@ class DomainPart extends Parser
         return $this->doParseDomainLiteral();
     }
 
+    /**
+     * @return string|false
+     */
     protected function doParseDomainLiteral()
     {
         $IPv6TAG = false;
@@ -262,6 +312,11 @@ class DomainPart extends Parser
         return $addressLiteral;
     }
 
+    /**
+     * @param string $addressLiteral
+     *
+     * @return string|false
+     */
     protected function checkIPV4Tag($addressLiteral)
     {
         $matchesIP  = array();
@@ -279,16 +334,18 @@ class DomainPart extends Parser
                 return false;
             }
             // Convert IPv4 part to IPv6 format for further testing
-            $addressLiteral = substr($addressLiteral, 0, $index) . '0:0';
+            $addressLiteral = substr($addressLiteral, 0, (int) $index) . '0:0';
         }
 
         return $addressLiteral;
     }
 
-    protected function checkDomainPartExceptions($prev)
+    protected function checkDomainPartExceptions(array $prev)
     {
         $invalidDomainTokens = array(
             EmailLexer::S_DQUOTE => true,
+            EmailLexer::S_SQUOTE => true,
+            EmailLexer::S_BACKTICK => true,
             EmailLexer::S_SEMICOLON => true,
             EmailLexer::S_GREATERTHAN => true,
             EmailLexer::S_LOWERTHAN => true,
@@ -320,6 +377,9 @@ class DomainPart extends Parser
         }
     }
 
+    /**
+     * @return bool
+     */
     protected function hasBrackets()
     {
         if ($this->lexer->token['type'] !== EmailLexer::S_OPENBRACKET) {
@@ -335,16 +395,31 @@ class DomainPart extends Parser
         return true;
     }
 
-    protected function checkLabelLength($prev)
+    /**
+     * @param string $label
+     */
+    protected function checkLabelLength($label)
     {
-        if ($this->lexer->token['type'] === EmailLexer::S_DOT &&
-            $prev['type'] === EmailLexer::GENERIC &&
-            strlen($prev['value']) > 63
-        ) {
+        if ($this->isLabelTooLong($label)) {
             $this->warnings[LabelTooLong::CODE] = new LabelTooLong();
         }
     }
 
+    /**
+     * @param string $label
+     * @return bool
+     */
+    private function isLabelTooLong($label)
+    {
+        if (preg_match('/[^\x00-\x7F]/', $label)) {
+            idn_to_ascii($label, IDNA_DEFAULT, INTL_IDNA_VARIANT_UTS46, $idnaInfo);
+
+            return (bool) ($idnaInfo['errors'] & IDNA_ERROR_LABEL_TOO_LONG);
+        }
+
+        return strlen($label) > self::LABEL_MAX_LENGTH;
+    }
+
     protected function parseDomainComments()
     {
         $this->isUnclosedComment();

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Parser/LocalPart.php

@@ -5,7 +5,6 @@ namespace Egulias\EmailValidator\Parser;
 use Egulias\EmailValidator\Exception\DotAtEnd;
 use Egulias\EmailValidator\Exception\DotAtStart;
 use Egulias\EmailValidator\EmailLexer;
-use Egulias\EmailValidator\EmailValidator;
 use Egulias\EmailValidator\Exception\ExpectingAT;
 use Egulias\EmailValidator\Exception\ExpectingATEXT;
 use Egulias\EmailValidator\Exception\UnclosedQuotedString;
@@ -20,9 +19,10 @@ class LocalPart extends Parser
         $parseDQuote = true;
         $closingQuote = false;
         $openedParenthesis = 0;
+        $totalLength = 0;
 
-        while ($this->lexer->token['type'] !== EmailLexer::S_AT && $this->lexer->token) {
-            if ($this->lexer->token['type'] === EmailLexer::S_DOT && !$this->lexer->getPrevious()) {
+        while ($this->lexer->token['type'] !== EmailLexer::S_AT && null !== $this->lexer->token['type']) {
+            if ($this->lexer->token['type'] === EmailLexer::S_DOT && null === $this->lexer->getPrevious()['type']) {
                 throw new DotAtStart();
             }
 
@@ -35,12 +35,13 @@ class LocalPart extends Parser
                 $this->parseComments();
                 $openedParenthesis += $this->getOpenedParenthesis();
             }
+
             if ($this->lexer->token['type'] === EmailLexer::S_CLOSEPARENTHESIS) {
                 if ($openedParenthesis === 0) {
                     throw new UnopenedComment();
-                } else {
-                    $openedParenthesis--;
                 }
+
+                $openedParenthesis--;
             }
 
             $this->checkConsecutiveDots();
@@ -58,15 +59,18 @@ class LocalPart extends Parser
                 $this->parseFWS();
             }
 
+            $totalLength += strlen($this->lexer->token['value']);
             $this->lexer->moveNext();
         }
 
-        $prev = $this->lexer->getPrevious();
-        if (strlen($prev['value']) > LocalTooLong::LOCAL_PART_LENGTH) {
+        if ($totalLength > LocalTooLong::LOCAL_PART_LENGTH) {
             $this->warnings[LocalTooLong::CODE] = new LocalTooLong();
         }
     }
 
+    /**
+     * @return bool
+     */
     protected function parseDoubleQuote()
     {
         $parseAgain = true;
@@ -86,7 +90,7 @@ class LocalPart extends Parser
 
         $this->lexer->moveNext();
 
-        while ($this->lexer->token['type'] !== EmailLexer::S_DQUOTE && $this->lexer->token) {
+        while ($this->lexer->token['type'] !== EmailLexer::S_DQUOTE && null !== $this->lexer->token['type']) {
             $parseAgain = false;
             if (isset($special[$this->lexer->token['type']]) && $setSpecialsWarning) {
                 $this->warnings[CFWSWithFWS::CODE] = new CFWSWithFWS();
@@ -118,7 +122,10 @@ class LocalPart extends Parser
         return $parseAgain;
     }
 
-    protected function isInvalidToken($token, $closingQuote)
+    /**
+     * @param bool $closingQuote
+     */
+    protected function isInvalidToken(array $token, $closingQuote)
     {
         $forbidden = array(
             EmailLexer::S_COMMA,

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Parser/Parser.php

@@ -8,7 +8,7 @@ use Egulias\EmailValidator\Exception\ConsecutiveDot;
 use Egulias\EmailValidator\Exception\CRLFAtTheEnd;
 use Egulias\EmailValidator\Exception\CRLFX2;
 use Egulias\EmailValidator\Exception\CRNoLF;
-use Egulias\EmailValidator\Exception\ExpectedQPair;
+use Egulias\EmailValidator\Exception\ExpectingQPair;
 use Egulias\EmailValidator\Exception\ExpectingATEXT;
 use Egulias\EmailValidator\Exception\ExpectingCTEXT;
 use Egulias\EmailValidator\Exception\UnclosedComment;
@@ -21,8 +21,19 @@ use Egulias\EmailValidator\Warning\QuotedString;
 
 abstract class Parser
 {
+    /**
+     * @var array
+     */
     protected $warnings = [];
+
+    /**
+     * @var EmailLexer
+     */
     protected $lexer;
+
+    /**
+     * @var int
+     */
     protected $openedParenthesis = 0;
 
     public function __construct(EmailLexer $lexer)
@@ -30,11 +41,17 @@ abstract class Parser
         $this->lexer = $lexer;
     }
 
+    /**
+     * @return \Egulias\EmailValidator\Warning\Warning[]
+     */
     public function getWarnings()
     {
         return $this->warnings;
     }
 
+    /**
+     * @param string $str
+     */
     abstract public function parse($str);
 
     /** @return int */
@@ -50,7 +67,7 @@ abstract class Parser
     {
         if (!($this->lexer->token['type'] === EmailLexer::INVALID
             || $this->lexer->token['type'] === EmailLexer::C_DEL)) {
-            throw new ExpectedQPair();
+            throw new ExpectingQPair();
         }
 
         $this->warnings[QuotedPart::CODE] =
@@ -80,6 +97,9 @@ abstract class Parser
         }
     }
 
+    /**
+     * @return bool
+     */
     protected function isUnclosedComment()
     {
         try {
@@ -122,6 +142,9 @@ abstract class Parser
         }
     }
 
+    /**
+     * @return bool
+     */
     protected function isFWS()
     {
         if ($this->escaped()) {
@@ -140,11 +163,14 @@ abstract class Parser
         return false;
     }
 
+    /**
+     * @return bool
+     */
     protected function escaped()
     {
         $previous = $this->lexer->getPrevious();
 
-        if ($previous['type'] === EmailLexer::S_BACKSLASH
+        if ($previous && $previous['type'] === EmailLexer::S_BACKSLASH
             &&
             $this->lexer->token['type'] !== EmailLexer::GENERIC
         ) {
@@ -154,6 +180,9 @@ abstract class Parser
         return false;
     }
 
+    /**
+     * @return bool
+     */
     protected function warnEscaping()
     {
         if ($this->lexer->token['type'] !== EmailLexer::S_BACKSLASH) {
@@ -174,6 +203,11 @@ abstract class Parser
 
     }
 
+    /**
+     * @param bool $hasClosingQuote
+     *
+     * @return bool
+     */
     protected function checkDQUOTE($hasClosingQuote)
     {
         if ($this->lexer->token['type'] !== EmailLexer::S_DQUOTE) {

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Validation/DNSCheckValidation.php

@@ -4,6 +4,8 @@ namespace Egulias\EmailValidator\Validation;
 
 use Egulias\EmailValidator\EmailLexer;
 use Egulias\EmailValidator\Exception\InvalidEmail;
+use Egulias\EmailValidator\Exception\LocalOrReservedDomain;
+use Egulias\EmailValidator\Exception\DomainAcceptsNoMail;
 use Egulias\EmailValidator\Warning\NoDNSMXRecord;
 use Egulias\EmailValidator\Exception\NoDNSRecord;
 
@@ -15,10 +17,23 @@ class DNSCheckValidation implements EmailValidation
     private $warnings = [];
 
     /**
-     * @var InvalidEmail
+     * @var InvalidEmail|null
      */
     private $error;
 
+    /**
+     * @var array
+     */
+    private $mxRecords = [];
+
+
+    public function __construct()
+    {
+        if (!function_exists('idn_to_ascii')) {
+            throw new \LogicException(sprintf('The %s class requires the Intl extension.', __CLASS__));
+        }
+    }
+
     public function isValid($email, EmailLexer $emailLexer)
     {
         // use the input to check DNS if we cannot extract something similar to a domain
@@ -29,7 +44,40 @@ class DNSCheckValidation implements EmailValidation
             $host = substr($email, $lastAtPos + 1);
         }
 
-        return $this->checkDNS($host);
+        // Get the domain parts
+        $hostParts = explode('.', $host);
+
+        // Reserved Top Level DNS Names (https://tools.ietf.org/html/rfc2606#section-2),
+        // mDNS and private DNS Namespaces (https://tools.ietf.org/html/rfc6762#appendix-G)
+        $reservedTopLevelDnsNames = [
+            // Reserved Top Level DNS Names
+            'test',
+            'example',
+            'invalid',
+            'localhost',
+
+            // mDNS
+            'local',
+
+            // Private DNS Namespaces
+            'intranet',
+            'internal',
+            'private',
+            'corp',
+            'home',
+            'lan',
+        ];
+
+        $isLocalDomain = count($hostParts) <= 1;
+        $isReservedTopLevel = in_array($hostParts[(count($hostParts) - 1)], $reservedTopLevelDnsNames, true);
+
+        // Exclude reserved top level DNS names
+        if ($isLocalDomain || $isReservedTopLevel) {
+            $this->error = new LocalOrReservedDomain();
+            return false;
+        }
+
+        return $this->checkDns($host);
     }
 
     public function getError()
@@ -42,20 +90,77 @@ class DNSCheckValidation implements EmailValidation
         return $this->warnings;
     }
 
-    protected function checkDNS($host)
+    /**
+     * @param string $host
+     *
+     * @return bool
+     */
+    protected function checkDns($host)
     {
-        $host = rtrim($host, '.') . '.';
+        $variant = INTL_IDNA_VARIANT_UTS46;
 
-        $Aresult = true;
-        $MXresult = checkdnsrr($host, 'MX');
+        $host = rtrim(idn_to_ascii($host, IDNA_DEFAULT, $variant), '.') . '.';
 
-        if (!$MXresult) {
-            $this->warnings[NoDNSMXRecord::CODE] = new NoDNSMXRecord();
-            $Aresult = checkdnsrr($host, 'A') || checkdnsrr($host, 'AAAA');
-            if (!$Aresult) {
-                $this->error = new NoDNSRecord();
+        return $this->validateDnsRecords($host);
+    }
+
+
+    /**
+     * Validate the DNS records for given host.
+     *
+     * @param string $host A set of DNS records in the format returned by dns_get_record.
+     *
+     * @return bool True on success.
+     */
+    private function validateDnsRecords($host)
+    {
+        // Get all MX, A and AAAA DNS records for host
+        // Using @ as workaround to fix https://bugs.php.net/bug.php?id=73149
+        $dnsRecords = @dns_get_record($host, DNS_MX + DNS_A + DNS_AAAA);
+
+
+        // No MX, A or AAAA DNS records
+        if (empty($dnsRecords)) {
+            $this->error = new NoDNSRecord();
+            return false;
+        }
+
+        // For each DNS record
+        foreach ($dnsRecords as $dnsRecord) {
+            if (!$this->validateMXRecord($dnsRecord)) {
+                return false;
             }
         }
-        return $MXresult || $Aresult;
+
+        // No MX records (fallback to A or AAAA records)
+        if (empty($this->mxRecords)) {
+            $this->warnings[NoDNSMXRecord::CODE] = new NoDNSMXRecord();
+        }
+
+        return true;
+    }
+
+    /**
+     * Validate an MX record
+     *
+     * @param array $dnsRecord Given DNS record.
+     *
+     * @return bool True if valid.
+     */
+    private function validateMxRecord($dnsRecord)
+    {
+        if ($dnsRecord['type'] !== 'MX') {
+            return true;
+        }
+
+        // "Null MX" record indicates the domain accepts no mail (https://tools.ietf.org/html/rfc7505)
+        if (empty($dnsRecord['target']) || $dnsRecord['target'] === '.') {
+            $this->error = new DomainAcceptsNoMail();
+            return false;
+        }
+
+        $this->mxRecords[] = $dnsRecord;
+
+        return true;
     }
 }

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Validation/Exception/EmptyValidationList.php

@@ -6,6 +6,9 @@ use Exception;
 
 class EmptyValidationList extends \InvalidArgumentException
 {
+    /**
+    * @param int $code
+    */
     public function __construct($code = 0, Exception $previous = null)
     {
         parent::__construct("Empty validation list is not allowed", $code, $previous);

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Validation/MultipleErrors.php

@@ -9,16 +9,22 @@ class MultipleErrors extends InvalidEmail
     const CODE = 999;
     const REASON = "Accumulated errors for multiple validations";
     /**
-     * @var array
+     * @var InvalidEmail[]
      */
     private $errors = [];
 
+    /**
+     * @param InvalidEmail[] $errors
+     */
     public function __construct(array $errors)
     {
         $this->errors = $errors;
         parent::__construct();
     }
 
+    /**
+     * @return InvalidEmail[]
+     */
     public function getErrors()
     {
         return $this->errors;

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Validation/MultipleValidationWithAnd.php

@@ -30,12 +30,12 @@ class MultipleValidationWithAnd implements EmailValidation
     private $warnings = [];
 
     /**
-     * @var MultipleErrors
+     * @var MultipleErrors|null
      */
     private $error;
 
     /**
-     * @var bool
+     * @var int
      */
     private $mode;
 
@@ -62,7 +62,8 @@ class MultipleValidationWithAnd implements EmailValidation
         $errors = [];
         foreach ($this->validations as $validation) {
             $emailLexer->reset();
-            $result = $result && $validation->isValid($email, $emailLexer);
+            $validationResult = $validation->isValid($email, $emailLexer);
+            $result = $result && $validationResult;
             $this->warnings = array_merge($this->warnings, $validation->getWarnings());
             $errors = $this->addNewError($validation->getError(), $errors);
 
@@ -78,6 +79,12 @@ class MultipleValidationWithAnd implements EmailValidation
         return $result;
     }
 
+    /**
+     * @param \Egulias\EmailValidator\Exception\InvalidEmail|null $possibleError
+     * @param \Egulias\EmailValidator\Exception\InvalidEmail[] $errors
+     *
+     * @return \Egulias\EmailValidator\Exception\InvalidEmail[]
+     */
     private function addNewError($possibleError, array $errors)
     {
         if (null !== $possibleError) {
@@ -87,13 +94,20 @@ class MultipleValidationWithAnd implements EmailValidation
         return $errors;
     }
 
+    /**
+     * @param bool $result
+     *
+     * @return bool
+     */
     private function shouldStop($result)
     {
         return !$result && $this->mode === self::STOP_ON_ERROR;
     }
 
     /**
-     * {@inheritdoc}
+     * Returns the validation errors.
+     *
+     * @return MultipleErrors|null
      */
     public function getError()
     {

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Validation/NoRFCWarningsValidation.php

@@ -9,7 +9,7 @@ use Egulias\EmailValidator\Validation\Error\RFCWarnings;
 class NoRFCWarningsValidation extends RFCValidation
 {
     /**
-     * @var InvalidEmail
+     * @var InvalidEmail|null
      */
     private $error;
 
@@ -22,8 +22,7 @@ class NoRFCWarningsValidation extends RFCValidation
             return false;
         }
 
-        $ret = $this->getWarnings();
-        if (empty($ret)) {
+        if (empty($this->getWarnings())) {
             return true;
         }
 

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Validation/RFCValidation.php

@@ -9,7 +9,7 @@ use Egulias\EmailValidator\Exception\InvalidEmail;
 class RFCValidation implements EmailValidation
 {
     /**
-     * @var EmailParser
+     * @var EmailParser|null
      */
     private $parser;
 
@@ -19,7 +19,7 @@ class RFCValidation implements EmailValidation
     private $warnings = [];
 
     /**
-     * @var InvalidEmail
+     * @var InvalidEmail|null
      */
     private $error;
 

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Validation/SpoofCheckValidation.php

@@ -10,7 +10,7 @@ use \Spoofchecker;
 class SpoofCheckValidation implements EmailValidation
 {
     /**
-     * @var InvalidEmail
+     * @var InvalidEmail|null
      */
     private $error;
 
@@ -21,6 +21,9 @@ class SpoofCheckValidation implements EmailValidation
         }
     }
 
+    /**
+     * @psalm-suppress InvalidArgument
+     */
     public function isValid($email, EmailLexer $emailLexer)
     {
         $checker = new Spoofchecker();
@@ -33,6 +36,9 @@ class SpoofCheckValidation implements EmailValidation
         return $this->error === null;
     }
 
+    /**
+     * @return InvalidEmail|null
+     */
     public function getError()
     {
         return $this->error;

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Warning/QuotedPart.php

@@ -6,6 +6,10 @@ class QuotedPart extends Warning
 {
     const CODE = 36;
 
+    /**
+     * @param scalar $prevToken
+     * @param scalar $postToken
+     */
     public function __construct($prevToken, $postToken)
     {
         $this->message = "Deprecated Quoted String found between $prevToken and $postToken";

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Warning/QuotedString.php

@@ -6,6 +6,10 @@ class QuotedString extends Warning
 {
     const CODE = 11;
 
+    /**
+     * @param scalar $prevToken
+     * @param scalar $postToken
+     */
     public function __construct($prevToken, $postToken)
     {
         $this->message = "Quoted String found between $prevToken and $postToken";

htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Warning/Warning.php

@@ -5,19 +5,36 @@ namespace Egulias\EmailValidator\Warning;
 abstract class Warning
 {
     const CODE = 0;
-    protected $message;
-    protected $rfcNumber;
 
+    /**
+     * @var string
+     */
+    protected $message = '';
+
+    /**
+     * @var int
+     */
+    protected $rfcNumber = 0;
+
+    /**
+     * @return string
+     */
     public function message()
     {
         return $this->message;
     }
 
+    /**
+     * @return int
+     */
     public function code()
     {
-        return self::CODE;
+        return static::CODE;
     }
 
+    /**
+     * @return int
+     */
     public function RFCNumber()
     {
         return $this->rfcNumber;

htdocs/includes/swiftmailer/lexer/lib/Doctrine/Common/Lexer/AbstractLexer.php

@@ -258,6 +258,11 @@ abstract class AbstractLexer
         $flags = PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_OFFSET_CAPTURE;
         $matches = preg_split($regex, $input, -1, $flags);
 
+        if (false === $matches) {
+            // Work around https://bugs.php.net/78122
+            $matches = array(array($input, 0));
+        }
+
         foreach ($matches as $match) {
             // Must remain before 'value' assignment since it can change content
             $type = $this->getType($match[0]);

htdocs/includes/swiftmailer/lib/classes/Swift.php

@@ -11,15 +11,14 @@
 /**
  * General utility class in Swift Mailer, not to be instantiated.
  *
- *
  * @author Chris Corbyn
  */
 abstract class Swift
 {
-    const VERSION = '6.0.2';
+    const VERSION = '6.3.0';
 
     public static $initialized = false;
-    public static $inits = array();
+    public static $inits = [];
 
     /**
      * Registers an initializer callable that will be called the first time
@@ -57,7 +56,7 @@ abstract class Swift
         if (self::$inits && !self::$initialized) {
             self::$initialized = true;
             foreach (self::$inits as $init) {
-                call_user_func($init);
+                \call_user_func($init);
             }
         }
     }
@@ -74,6 +73,6 @@ abstract class Swift
         if (null !== $callable) {
             self::$inits[] = $callable;
         }
-        spl_autoload_register(array('Swift', 'autoload'));
+        spl_autoload_register(['Swift', 'autoload']);
     }
 }

htdocs/includes/swiftmailer/lib/classes/Swift/AddressEncoder.php

@@ -0,0 +1,25 @@
+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2018 Christian Schmidt
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Email address encoder.
+ *
+ * @author Christian Schmidt
+ */
+interface Swift_AddressEncoder
+{
+    /**
+     * Encodes an email address.
+     *
+     * @throws Swift_AddressEncoderException if the email cannot be represented in
+     *                                       the encoding implemented by this class
+     */
+    public function encodeString(string $address): string;
+}

htdocs/includes/swiftmailer/lib/classes/Swift/AddressEncoder/IdnAddressEncoder.php

@@ -0,0 +1,50 @@
+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2018 Christian Schmidt
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * An IDN email address encoder.
+ *
+ * Encodes the domain part of an address using IDN. This is compatible will all
+ * SMTP servers.
+ *
+ * This encoder does not support email addresses with non-ASCII characters in
+ * local-part (the substring before @). To send to such addresses, use
+ * Swift_AddressEncoder_Utf8AddressEncoder together with
+ * Swift_Transport_Esmtp_SmtpUtf8Handler. Your outbound SMTP server must support
+ * the SMTPUTF8 extension.
+ *
+ * @author Christian Schmidt
+ */
+class Swift_AddressEncoder_IdnAddressEncoder implements Swift_AddressEncoder
+{
+    /**
+     * Encodes the domain part of an address using IDN.
+     *
+     * @throws Swift_AddressEncoderException If local-part contains non-ASCII characters
+     */
+    public function encodeString(string $address): string
+    {
+        $i = strrpos($address, '@');
+        if (false !== $i) {
+            $local = substr($address, 0, $i);
+            $domain = substr($address, $i + 1);
+
+            if (preg_match('/[^\x00-\x7F]/', $local)) {
+                throw new Swift_AddressEncoderException('Non-ASCII characters not supported in local-part', $address);
+            }
+
+            if (preg_match('/[^\x00-\x7F]/', $domain)) {
+                $address = sprintf('%s@%s', $local, idn_to_ascii($domain, 0, INTL_IDNA_VARIANT_UTS46));
+            }
+        }
+
+        return $address;
+    }
+}

htdocs/includes/swiftmailer/lib/classes/Swift/AddressEncoder/Utf8AddressEncoder.php

@@ -0,0 +1,36 @@
+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2018 Christian Schmidt
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * A UTF-8 email address encoder.
+ *
+ * Returns the email address verbatimly in UTF-8 as permitted by RFC 6531 and
+ * RFC 6532. It supports addresses containing non-ASCII characters in both
+ * local-part and domain (i.e. on both sides of @).
+ *
+ * This encoder must be used together with Swift_Transport_Esmtp_SmtpUtf8Handler
+ * and requires that the outbound SMTP server supports the SMTPUTF8 extension.
+ *
+ * If your outbound SMTP server does not support SMTPUTF8, use
+ * Swift_AddressEncoder_IdnAddressEncoder instead. This allows sending to email
+ * addresses with non-ASCII characters in the domain, but not in local-part.
+ *
+ * @author Christian Schmidt
+ */
+class Swift_AddressEncoder_Utf8AddressEncoder implements Swift_AddressEncoder
+{
+    /**
+     * Returns the address verbatimly.
+     */
+    public function encodeString(string $address): string
+    {
+        return $address;
+    }
+}

htdocs/includes/swiftmailer/lib/classes/Swift/AddressEncoderException.php

@@ -0,0 +1,32 @@
+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2018 Christian Schmidt
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * AddressEncoderException when the specified email address is in a format that
+ * cannot be encoded by a given address encoder.
+ *
+ * @author Christian Schmidt
+ */
+class Swift_AddressEncoderException extends Swift_RfcComplianceException
+{
+    protected $address;
+
+    public function __construct(string $message, string $address)
+    {
+        parent::__construct($message);
+
+        $this->address = $address;
+    }
+
+    public function getAddress(): string
+    {
+        return $this->address;
+    }
+}

htdocs/includes/swiftmailer/lib/classes/Swift/Attachment.php

@@ -26,17 +26,14 @@ class Swift_Attachment extends Swift_Mime_Attachment
      */
     public function __construct($data = null, $filename = null, $contentType = null)
     {
-        call_user_func_array(
-            array($this, 'Swift_Mime_Attachment::__construct'),
+        \call_user_func_array(
+            [$this, 'Swift_Mime_Attachment::__construct'],
             Swift_DependencyContainer::getInstance()
                 ->createDependenciesFor('mime.attachment')
             );
 
-        $this->setBody($data);
+        $this->setBody($data, $contentType);
         $this->setFilename($filename);
-        if ($contentType) {
-            $this->setContentType($contentType);
-        }
     }
 
     /**
@@ -45,7 +42,7 @@ class Swift_Attachment extends Swift_Mime_Attachment
      * @param string $path
      * @param string $contentType optional
      *
-     * @return Swift_Mime_Attachment
+     * @return self
      */
     public static function fromPath($path, $contentType = null)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/ByteStream/AbstractFilterableInputStream.php

@@ -25,7 +25,7 @@ abstract class Swift_ByteStream_AbstractFilterableInputStream implements Swift_I
      *
      * @var Swift_StreamFilter[]
      */
-    private $filters = array();
+    private $filters = [];
 
     /**
      * A buffer for writing.
@@ -37,7 +37,7 @@ abstract class Swift_ByteStream_AbstractFilterableInputStream implements Swift_I
      *
      * @var Swift_InputByteStream[]
      */
-    private $mirrors = array();
+    private $mirrors = [];
 
     /**
      * Commit the given bytes to the storage medium immediately.
@@ -54,8 +54,7 @@ abstract class Swift_ByteStream_AbstractFilterableInputStream implements Swift_I
     /**
      * Add a StreamFilter to this InputByteStream.
      *
-     * @param Swift_StreamFilter $filter
-     * @param string             $key
+     * @param string $key
      */
     public function addFilter(Swift_StreamFilter $filter, $key)
     {
@@ -110,8 +109,6 @@ abstract class Swift_ByteStream_AbstractFilterableInputStream implements Swift_I
      *
      * The stream acts as an observer, receiving all data that is written.
      * All {@link write()} and {@link flushBuffers()} operations will be mirrored.
-     *
-     * @param Swift_InputByteStream $is
      */
     public function bind(Swift_InputByteStream $is)
     {
@@ -124,14 +121,12 @@ abstract class Swift_ByteStream_AbstractFilterableInputStream implements Swift_I
      * If $is is not bound, no errors will be raised.
      * If the stream currently has any buffered data it will be written to $is
      * before unbinding occurs.
-     *
-     * @param Swift_InputByteStream $is
      */
     public function unbind(Swift_InputByteStream $is)
     {
         foreach ($this->mirrors as $k => $stream) {
             if ($is === $stream) {
-                if ($this->writeBuffer !== '') {
+                if ('' !== $this->writeBuffer) {
                     $stream->write($this->writeBuffer);
                 }
                 unset($this->mirrors[$k]);
@@ -147,7 +142,7 @@ abstract class Swift_ByteStream_AbstractFilterableInputStream implements Swift_I
      */
     public function flushBuffers()
     {
-        if ($this->writeBuffer !== '') {
+        if ('' !== $this->writeBuffer) {
             $this->doWrite($this->writeBuffer);
         }
         $this->flush();

htdocs/includes/swiftmailer/lib/classes/Swift/ByteStream/ArrayByteStream.php

@@ -20,7 +20,7 @@ class Swift_ByteStream_ArrayByteStream implements Swift_InputByteStream, Swift_O
      *
      * @var string[]
      */
-    private $array = array();
+    private $array = [];
 
     /**
      * The size of the stack.
@@ -41,7 +41,7 @@ class Swift_ByteStream_ArrayByteStream implements Swift_InputByteStream, Swift_O
      *
      * @var Swift_InputByteStream[]
      */
-    private $mirrors = array();
+    private $mirrors = [];
 
     /**
      * Create a new ArrayByteStream.
@@ -52,13 +52,13 @@ class Swift_ByteStream_ArrayByteStream implements Swift_InputByteStream, Swift_O
      */
     public function __construct($stack = null)
     {
-        if (is_array($stack)) {
+        if (\is_array($stack)) {
             $this->array = $stack;
-            $this->arraySize = count($stack);
-        } elseif (is_string($stack)) {
+            $this->arraySize = \count($stack);
+        } elseif (\is_string($stack)) {
             $this->write($stack);
         } else {
-            $this->array = array();
+            $this->array = [];
         }
     }
 
@@ -102,7 +102,7 @@ class Swift_ByteStream_ArrayByteStream implements Swift_InputByteStream, Swift_O
         foreach ($to_add as $value) {
             $this->array[] = $value;
         }
-        $this->arraySize = count($this->array);
+        $this->arraySize = \count($this->array);
 
         foreach ($this->mirrors as $stream) {
             $stream->write($bytes);
@@ -121,8 +121,6 @@ class Swift_ByteStream_ArrayByteStream implements Swift_InputByteStream, Swift_O
      *
      * The stream acts as an observer, receiving all data that is written.
      * All {@link write()} and {@link flushBuffers()} operations will be mirrored.
-     *
-     * @param Swift_InputByteStream $is
      */
     public function bind(Swift_InputByteStream $is)
     {
@@ -135,8 +133,6 @@ class Swift_ByteStream_ArrayByteStream implements Swift_InputByteStream, Swift_O
      * If $is is not bound, no errors will be raised.
      * If the stream currently has any buffered data it will be written to $is
      * before unbinding occurs.
-     *
-     * @param Swift_InputByteStream $is
      */
     public function unbind(Swift_InputByteStream $is)
     {
@@ -172,7 +168,7 @@ class Swift_ByteStream_ArrayByteStream implements Swift_InputByteStream, Swift_O
     public function flushBuffers()
     {
         $this->offset = 0;
-        $this->array = array();
+        $this->array = [];
         $this->arraySize = 0;
 
         foreach ($this->mirrors as $stream) {

htdocs/includes/swiftmailer/lib/classes/Swift/ByteStream/FileByteStream.php

@@ -81,7 +81,7 @@ class Swift_ByteStream_FileByteStream extends Swift_ByteStream_AbstractFilterabl
 
             // If we read one byte after reaching the end of the file
             // feof() will return false and an empty string is returned
-            if ($bytes === '' && feof($fp)) {
+            if ((false === $bytes || '' === $bytes) && feof($fp)) {
                 $this->resetReadHandle();
 
                 return false;
@@ -131,7 +131,7 @@ class Swift_ByteStream_FileByteStream extends Swift_ByteStream_AbstractFilterabl
                 throw new Swift_IoException('Unable to open file for reading ['.$this->path.']');
             }
             $this->reader = $pointer;
-            if ($this->offset != 0) {
+            if (0 != $this->offset) {
                 $this->getReadStreamSeekableStatus();
                 $this->seekReadStreamToPosition($this->offset);
             }
@@ -145,9 +145,7 @@ class Swift_ByteStream_FileByteStream extends Swift_ByteStream_AbstractFilterabl
     {
         if (!isset($this->writer)) {
             if (!$this->writer = fopen($this->path, $this->mode)) {
-                throw new Swift_IoException(
-                    'Unable to open file for writing ['.$this->path.']'
-                );
+                throw new Swift_IoException('Unable to open file for writing ['.$this->path.']');
             }
         }
 
@@ -173,10 +171,10 @@ class Swift_ByteStream_FileByteStream extends Swift_ByteStream_AbstractFilterabl
     /** Streams in a readOnly stream ensuring copy if needed */
     private function seekReadStreamToPosition($offset)
     {
-        if ($this->seekable === null) {
+        if (null === $this->seekable) {
             $this->getReadStreamSeekableStatus();
         }
-        if ($this->seekable === false) {
+        if (false === $this->seekable) {
             $currentPos = ftell($this->reader);
             if ($currentPos < $offset) {
                 $toDiscard = $offset - $currentPos;
@@ -194,7 +192,7 @@ class Swift_ByteStream_FileByteStream extends Swift_ByteStream_AbstractFilterabl
     {
         if ($tmpFile = fopen('php://temp/maxmemory:4096', 'w+b')) {
             /* We have opened a php:// Stream Should work without problem */
-        } elseif (function_exists('sys_get_temp_dir') && is_writable(sys_get_temp_dir()) && ($tmpFile = tmpfile())) {
+        } elseif (\function_exists('sys_get_temp_dir') && is_writable(sys_get_temp_dir()) && ($tmpFile = tmpfile())) {
             /* We have opened a tmpfile */
         } else {
             throw new Swift_IoException('Unable to copy the file to make it seekable, sys_temp_dir is not writable, php://memory not available');

htdocs/includes/swiftmailer/lib/classes/Swift/ByteStream/TemporaryFileByteStream.php

@@ -17,7 +17,7 @@ class Swift_ByteStream_TemporaryFileByteStream extends Swift_ByteStream_FileByte
     {
         $filePath = tempnam(sys_get_temp_dir(), 'FileByteStream');
 
-        if ($filePath === false) {
+        if (false === $filePath) {
             throw new Swift_IoException('Failed to retrieve temporary file name.');
         }
 
@@ -26,7 +26,7 @@ class Swift_ByteStream_TemporaryFileByteStream extends Swift_ByteStream_FileByte
 
     public function getContent()
     {
-        if (($content = file_get_contents($this->getPath())) === false) {
+        if (false === ($content = file_get_contents($this->getPath()))) {
             throw new Swift_IoException('Failed to get temporary file content.');
         }
 
@@ -39,4 +39,14 @@ class Swift_ByteStream_TemporaryFileByteStream extends Swift_ByteStream_FileByte
             @unlink($this->getPath());
         }
     }
+
+    public function __sleep()
+    {
+        throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
+    }
+
+    public function __wakeup()
+    {
+        throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
+    }
 }

htdocs/includes/swiftmailer/lib/classes/Swift/CharacterReader/GenericFixedWidthReader.php

@@ -45,7 +45,7 @@ class Swift_CharacterReader_GenericFixedWidthReader implements Swift_CharacterRe
      */
     public function getCharPositions($string, $startOffset, &$currentMap, &$ignoredChars)
     {
-        $strlen = strlen($string);
+        $strlen = \strlen($string);
         // % and / are CPU intensive, so, maybe find a better way
         $ignored = $strlen % $this->width;
         $ignoredChars = $ignored ? substr($string, -$ignored) : '';

htdocs/includes/swiftmailer/lib/classes/Swift/CharacterReader/UsAsciiReader.php

@@ -27,7 +27,7 @@ class Swift_CharacterReader_UsAsciiReader implements Swift_CharacterReader
      */
     public function getCharPositions($string, $startOffset, &$currentMap, &$ignoredChars)
     {
-        $strlen = strlen($string);
+        $strlen = \strlen($string);
         $ignoredChars = '';
         for ($i = 0; $i < $strlen; ++$i) {
             if ($string[$i] > "\x07F") {
@@ -65,7 +65,7 @@ class Swift_CharacterReader_UsAsciiReader implements Swift_CharacterReader
     public function validateByteSequence($bytes, $size)
     {
         $byte = reset($bytes);
-        if (1 == count($bytes) && $byte >= 0x00 && $byte <= 0x7F) {
+        if (1 == \count($bytes) && $byte >= 0x00 && $byte <= 0x7F) {
             return 0;
         }
 

htdocs/includes/swiftmailer/lib/classes/Swift/CharacterReader/Utf8Reader.php

@@ -17,8 +17,8 @@
 class Swift_CharacterReader_Utf8Reader implements Swift_CharacterReader
 {
     /** Pre-computed for optimization */
-    private static $length_map = array(
-        // N=0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,
+    private static $length_map = [
+        // N=0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F
         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0x0N
         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0x1N
         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0x2N
@@ -34,10 +34,10 @@ class Swift_CharacterReader_Utf8Reader implements Swift_CharacterReader
         2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // 0xCN
         2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // 0xDN
         3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, // 0xEN
-        4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 0, 0,  // 0xFN
-    );
+        4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 0, 0, // 0xFN
+    ];
 
-    private static $s_length_map = array(
+    private static $s_length_map = [
         "\x00" => 1, "\x01" => 1, "\x02" => 1, "\x03" => 1, "\x04" => 1, "\x05" => 1, "\x06" => 1, "\x07" => 1,
         "\x08" => 1, "\x09" => 1, "\x0a" => 1, "\x0b" => 1, "\x0c" => 1, "\x0d" => 1, "\x0e" => 1, "\x0f" => 1,
         "\x10" => 1, "\x11" => 1, "\x12" => 1, "\x13" => 1, "\x14" => 1, "\x15" => 1, "\x16" => 1, "\x17" => 1,
@@ -70,7 +70,7 @@ class Swift_CharacterReader_Utf8Reader implements Swift_CharacterReader
         "\xe8" => 3, "\xe9" => 3, "\xea" => 3, "\xeb" => 3, "\xec" => 3, "\xed" => 3, "\xee" => 3, "\xef" => 3,
         "\xf0" => 4, "\xf1" => 4, "\xf2" => 4, "\xf3" => 4, "\xf4" => 4, "\xf5" => 4, "\xf6" => 4, "\xf7" => 4,
         "\xf8" => 5, "\xf9" => 5, "\xfa" => 5, "\xfb" => 5, "\xfc" => 6, "\xfd" => 6, "\xfe" => 0, "\xff" => 0,
-     );
+     ];
 
     /**
      * Returns the complete character map.
@@ -85,22 +85,22 @@ class Swift_CharacterReader_Utf8Reader implements Swift_CharacterReader
     public function getCharPositions($string, $startOffset, &$currentMap, &$ignoredChars)
     {
         if (!isset($currentMap['i']) || !isset($currentMap['p'])) {
-            $currentMap['p'] = $currentMap['i'] = array();
+            $currentMap['p'] = $currentMap['i'] = [];
         }
 
-        $strlen = strlen($string);
-        $charPos = count($currentMap['p']);
+        $strlen = \strlen($string);
+        $charPos = \count($currentMap['p']);
         $foundChars = 0;
         $invalid = false;
         for ($i = 0; $i < $strlen; ++$i) {
             $char = $string[$i];
             $size = self::$s_length_map[$char];
-            if ($size == 0) {
+            if (0 == $size) {
                 /* char is invalid, we must wait for a resync */
                 $invalid = true;
                 continue;
             } else {
-                if ($invalid == true) {
+                if (true === $invalid) {
                     /* We mark the chars as invalid and start a new char */
                     $currentMap['p'][$charPos + $foundChars] = $startOffset + $i;
                     $currentMap['i'][$charPos + $foundChars] = true;

htdocs/includes/swiftmailer/lib/classes/Swift/CharacterReaderFactory/SimpleCharacterReaderFactory.php

@@ -20,14 +20,14 @@ class Swift_CharacterReaderFactory_SimpleCharacterReaderFactory implements Swift
      *
      * @var array
      */
-    private static $map = array();
+    private static $map = [];
 
     /**
      * Factories which have already been loaded.
      *
      * @var Swift_CharacterReaderFactory[]
      */
-    private static $loaded = array();
+    private static $loaded = [];
 
     /**
      * Creates a new CharacterReaderFactory.
@@ -44,32 +44,32 @@ class Swift_CharacterReaderFactory_SimpleCharacterReaderFactory implements Swift
 
     public function init()
     {
-        if (count(self::$map) > 0) {
+        if (\count(self::$map) > 0) {
             return;
         }
 
         $prefix = 'Swift_CharacterReader_';
 
-        $singleByte = array(
+        $singleByte = [
             'class' => $prefix.'GenericFixedWidthReader',
-            'constructor' => array(1),
-            );
+            'constructor' => [1],
+            ];
 
-        $doubleByte = array(
+        $doubleByte = [
             'class' => $prefix.'GenericFixedWidthReader',
-            'constructor' => array(2),
-            );
+            'constructor' => [2],
+            ];
 
-        $fourBytes = array(
+        $fourBytes = [
             'class' => $prefix.'GenericFixedWidthReader',
-            'constructor' => array(4),
-            );
+            'constructor' => [4],
+            ];
 
         // Utf-8
-        self::$map['utf-?8'] = array(
+        self::$map['utf-?8'] = [
             'class' => $prefix.'Utf8Reader',
-            'constructor' => array(),
-            );
+            'constructor' => [],
+            ];
 
         //7-8 bit charsets
         self::$map['(us-)?ascii'] = $singleByte;
@@ -103,11 +103,11 @@ class Swift_CharacterReaderFactory_SimpleCharacterReaderFactory implements Swift
      */
     public function getReaderFor($charset)
     {
-        $charset = strtolower(trim($charset));
+        $charset = strtolower(trim($charset ?? ''));
         foreach (self::$map as $pattern => $spec) {
             $re = '/^'.$pattern.'$/D';
             if (preg_match($re, $charset)) {
-                if (!array_key_exists($pattern, self::$loaded)) {
+                if (!\array_key_exists($pattern, self::$loaded)) {
                     $reflector = new ReflectionClass($spec['class']);
                     if ($reflector->getConstructor()) {
                         $reader = $reflector->newInstanceArgs($spec['constructor']);

htdocs/includes/swiftmailer/lib/classes/Swift/CharacterStream.php

@@ -28,8 +28,6 @@ interface Swift_CharacterStream
 
     /**
      * Set the CharacterReaderFactory for multi charset support.
-     *
-     * @param Swift_CharacterReaderFactory $factory
      */
     public function setCharacterReaderFactory(Swift_CharacterReaderFactory $factory);
 

htdocs/includes/swiftmailer/lib/classes/Swift/CharacterStream/ArrayCharacterStream.php

@@ -31,10 +31,10 @@ class Swift_CharacterStream_ArrayCharacterStream implements Swift_CharacterStrea
     private $charset;
 
     /** Array of characters */
-    private $array = array();
+    private $array = [];
 
     /** Size of the array of character */
-    private $array_size = array();
+    private $array_size = [];
 
     /** The current character offset in the stream */
     private $offset = 0;
@@ -65,8 +65,6 @@ class Swift_CharacterStream_ArrayCharacterStream implements Swift_CharacterStrea
 
     /**
      * Set the CharacterReaderFactory for multi charset support.
-     *
-     * @param Swift_CharacterReaderFactory $factory
      */
     public function setCharacterReaderFactory(Swift_CharacterReaderFactory $factory)
     {
@@ -87,16 +85,16 @@ class Swift_CharacterStream_ArrayCharacterStream implements Swift_CharacterStrea
 
         $startLength = $this->charReader->getInitialByteSize();
         while (false !== $bytes = $os->read($startLength)) {
-            $c = array();
-            for ($i = 0, $len = strlen($bytes); $i < $len; ++$i) {
+            $c = [];
+            for ($i = 0, $len = \strlen($bytes); $i < $len; ++$i) {
                 $c[] = self::$byteMap[$bytes[$i]];
             }
-            $size = count($c);
+            $size = \count($c);
             $need = $this->charReader
                 ->validateByteSequence($c, $size);
             if ($need > 0 &&
                 false !== $bytes = $os->read($need)) {
-                for ($i = 0, $len = strlen($bytes); $i < $len; ++$i) {
+                for ($i = 0, $len = \strlen($bytes); $i < $len; ++$i) {
                     $c[] = self::$byteMap[$bytes[$i]];
                 }
             }
@@ -132,7 +130,7 @@ class Swift_CharacterStream_ArrayCharacterStream implements Swift_CharacterStrea
         }
 
         // Don't use array slice
-        $arrays = array();
+        $arrays = [];
         $end = $length + $this->offset;
         for ($i = $this->offset; $i < $end; ++$i) {
             if (!isset($this->array[$i])) {
@@ -162,7 +160,7 @@ class Swift_CharacterStream_ArrayCharacterStream implements Swift_CharacterStrea
         if ($this->offset == $this->array_size) {
             return false;
         }
-        $arrays = array();
+        $arrays = [];
         $end = $length + $this->offset;
         for ($i = $this->offset; $i < $end; ++$i) {
             if (!isset($this->array[$i])) {
@@ -172,7 +170,7 @@ class Swift_CharacterStream_ArrayCharacterStream implements Swift_CharacterStrea
         }
         $this->offset += ($i - $this->offset); // Limit function calls
 
-        return call_user_func_array('array_merge', $arrays);
+        return array_merge(...$arrays);
     }
 
     /**
@@ -194,19 +192,19 @@ class Swift_CharacterStream_ArrayCharacterStream implements Swift_CharacterStrea
         unset($chars);
         fseek($fp, 0, SEEK_SET);
 
-        $buffer = array(0);
+        $buffer = [0];
         $buf_pos = 1;
         $buf_len = 1;
         $has_datas = true;
         do {
-            $bytes = array();
+            $bytes = [];
             // Buffer Filing
             if ($buf_len - $buf_pos < $startLength) {
                 $buf = array_splice($buffer, $buf_pos);
                 $new = $this->reloadBuffer($fp, 100);
                 if ($new) {
                     $buffer = array_merge($buf, $new);
-                    $buf_len = count($buffer);
+                    $buf_len = \count($buffer);
                     $buf_pos = 0;
                 } else {
                     $has_datas = false;
@@ -226,7 +224,7 @@ class Swift_CharacterStream_ArrayCharacterStream implements Swift_CharacterStrea
 
                         if ($new) {
                             $buffer = array_merge($buffer, $new);
-                            $buf_len = count($buffer);
+                            $buf_len = \count($buffer);
                         }
                     }
                     for ($i = 0; $i < $need && isset($buffer[$buf_pos]); ++$i) {
@@ -262,15 +260,15 @@ class Swift_CharacterStream_ArrayCharacterStream implements Swift_CharacterStrea
     public function flushContents()
     {
         $this->offset = 0;
-        $this->array = array();
+        $this->array = [];
         $this->array_size = 0;
     }
 
     private function reloadBuffer($fp, $len)
     {
-        if (!feof($fp) && ($bytes = fread($fp, $len)) !== false) {
-            $buf = array();
-            for ($i = 0, $len = strlen($bytes); $i < $len; ++$i) {
+        if (!feof($fp) && false !== ($bytes = fread($fp, $len))) {
+            $buf = [];
+            for ($i = 0, $len = \strlen($bytes); $i < $len; ++$i) {
                 $buf[] = self::$byteMap[$bytes[$i]];
             }
 
@@ -283,9 +281,9 @@ class Swift_CharacterStream_ArrayCharacterStream implements Swift_CharacterStrea
     private static function initializeMaps()
     {
         if (!isset(self::$charMap)) {
-            self::$charMap = array();
+            self::$charMap = [];
             for ($byte = 0; $byte < 256; ++$byte) {
-                self::$charMap[$byte] = chr($byte);
+                self::$charMap[$byte] = \chr($byte);
             }
             self::$byteMap = array_flip(self::$charMap);
         }

htdocs/includes/swiftmailer/lib/classes/Swift/CharacterStream/NgCharacterStream.php

@@ -81,8 +81,7 @@ class Swift_CharacterStream_NgCharacterStream implements Swift_CharacterStream
     /**
      * Constructor.
      *
-     * @param Swift_CharacterReaderFactory $factory
-     * @param string                       $charset
+     * @param string $charset
      */
     public function __construct(Swift_CharacterReaderFactory $factory, $charset)
     {
@@ -106,8 +105,6 @@ class Swift_CharacterStream_NgCharacterStream implements Swift_CharacterStream
 
     /**
      * Set the CharacterReaderFactory for multi charset support.
-     *
-     * @param Swift_CharacterReaderFactory $factory
      */
     public function setCharacterReaderFactory(Swift_CharacterReaderFactory $factory)
     {
@@ -128,8 +125,6 @@ class Swift_CharacterStream_NgCharacterStream implements Swift_CharacterStream
 
     /**
      * @see Swift_CharacterStream::importByteStream()
-     *
-     * @param Swift_OutputByteStream $os
      */
     public function importByteStream(Swift_OutputByteStream $os)
     {
@@ -220,7 +215,7 @@ class Swift_CharacterStream_NgCharacterStream implements Swift_CharacterStream
     public function readBytes($length)
     {
         $read = $this->read($length);
-        if ($read !== false) {
+        if (false !== $read) {
             $ret = array_map('ord', str_split($read, 1));
 
             return $ret;
@@ -252,16 +247,16 @@ class Swift_CharacterStream_NgCharacterStream implements Swift_CharacterStream
         if (!isset($this->charReader)) {
             $this->charReader = $this->charReaderFactory->getReaderFor(
                 $this->charset);
-            $this->map = array();
+            $this->map = [];
             $this->mapType = $this->charReader->getMapType();
         }
         $ignored = '';
         $this->datas .= $chars;
         $this->charCount += $this->charReader->getCharPositions(substr($this->datas, $this->datasSize), $this->datasSize, $this->map, $ignored);
-        if ($ignored !== false) {
-            $this->datasSize = strlen($this->datas) - strlen($ignored);
+        if (false !== $ignored) {
+            $this->datasSize = \strlen($this->datas) - \strlen($ignored);
         } else {
-            $this->datasSize = strlen($this->datas);
+            $this->datasSize = \strlen($this->datas);
         }
     }
 }

htdocs/includes/swiftmailer/lib/classes/Swift/DependencyContainer.php

@@ -16,22 +16,25 @@
 class Swift_DependencyContainer
 {
     /** Constant for literal value types */
-    const TYPE_VALUE = 0x0001;
+    const TYPE_VALUE = 0x00001;
 
     /** Constant for new instance types */
-    const TYPE_INSTANCE = 0x0010;
+    const TYPE_INSTANCE = 0x00010;
 
     /** Constant for shared instance types */
-    const TYPE_SHARED = 0x0100;
+    const TYPE_SHARED = 0x00100;
 
     /** Constant for aliases */
-    const TYPE_ALIAS = 0x1000;
+    const TYPE_ALIAS = 0x01000;
+
+    /** Constant for arrays */
+    const TYPE_ARRAY = 0x10000;
 
     /** Singleton instance */
     private static $instance = null;
 
     /** The data container */
-    private $store = array();
+    private $store = [];
 
     /** The current endpoint in the data container */
     private $endPoint;
@@ -80,7 +83,7 @@ class Swift_DependencyContainer
      */
     public function has($itemName)
     {
-        return array_key_exists($itemName, $this->store)
+        return \array_key_exists($itemName, $this->store)
             && isset($this->store[$itemName]['lookupType']);
     }
 
@@ -98,9 +101,7 @@ class Swift_DependencyContainer
     public function lookup($itemName)
     {
         if (!$this->has($itemName)) {
-            throw new Swift_DependencyException(
-                'Cannot lookup dependency "'.$itemName.'" since it is not registered.'
-                );
+            throw new Swift_DependencyException('Cannot lookup dependency "'.$itemName.'" since it is not registered.');
         }
 
         switch ($this->store[$itemName]['lookupType']) {
@@ -112,6 +113,8 @@ class Swift_DependencyContainer
                 return $this->createNewInstance($itemName);
             case self::TYPE_SHARED:
                 return $this->createSharedInstance($itemName);
+            case self::TYPE_ARRAY:
+                return $this->createDependenciesFor($itemName);
         }
     }
 
@@ -124,7 +127,7 @@ class Swift_DependencyContainer
      */
     public function createDependenciesFor($itemName)
     {
-        $args = array();
+        $args = [];
         if (isset($this->store[$itemName]['args'])) {
             $args = $this->resolveArgs($this->store[$itemName]['args']);
         }
@@ -147,7 +150,7 @@ class Swift_DependencyContainer
      */
     public function register($itemName)
     {
-        $this->store[$itemName] = array();
+        $this->store[$itemName] = [];
         $this->endPoint = &$this->store[$itemName];
 
         return $this;
@@ -227,6 +230,21 @@ class Swift_DependencyContainer
         return $this;
     }
 
+    /**
+     * Specify the previously registered item as array of dependencies.
+     *
+     * {@link register()} must be called before this will work.
+     *
+     * @return $this
+     */
+    public function asArray()
+    {
+        $endPoint = &$this->getEndPoint();
+        $endPoint['lookupType'] = self::TYPE_ARRAY;
+
+        return $this;
+    }
+
     /**
      * Specify a list of injected dependencies for the previously registered item.
      *
@@ -234,14 +252,12 @@ class Swift_DependencyContainer
      *
      * @see addConstructorValue(), addConstructorLookup()
      *
-     * @param array $lookups
-     *
      * @return $this
      */
     public function withDependencies(array $lookups)
     {
         $endPoint = &$this->getEndPoint();
-        $endPoint['args'] = array();
+        $endPoint['args'] = [];
         foreach ($lookups as $lookup) {
             $this->addConstructorLookup($lookup);
         }
@@ -263,9 +279,9 @@ class Swift_DependencyContainer
     {
         $endPoint = &$this->getEndPoint();
         if (!isset($endPoint['args'])) {
-            $endPoint['args'] = array();
+            $endPoint['args'] = [];
         }
-        $endPoint['args'][] = array('type' => 'value', 'item' => $value);
+        $endPoint['args'][] = ['type' => 'value', 'item' => $value];
 
         return $this;
     }
@@ -284,9 +300,9 @@ class Swift_DependencyContainer
     {
         $endPoint = &$this->getEndPoint();
         if (!isset($this->endPoint['args'])) {
-            $endPoint['args'] = array();
+            $endPoint['args'] = [];
         }
-        $endPoint['args'][] = array('type' => 'lookup', 'item' => $lookup);
+        $endPoint['args'][] = ['type' => 'lookup', 'item' => $lookup];
 
         return $this;
     }
@@ -330,9 +346,7 @@ class Swift_DependencyContainer
     private function &getEndPoint()
     {
         if (!isset($this->endPoint)) {
-            throw new BadMethodCallException(
-                'Component must first be registered by calling register()'
-                );
+            throw new BadMethodCallException('Component must first be registered by calling register()');
         }
 
         return $this->endPoint;
@@ -341,7 +355,7 @@ class Swift_DependencyContainer
     /** Get an argument list with dependencies resolved */
     private function resolveArgs(array $args)
     {
-        $resolved = array();
+        $resolved = [];
         foreach ($args as $argDefinition) {
             switch ($argDefinition['type']) {
                 case 'lookup':
@@ -359,8 +373,8 @@ class Swift_DependencyContainer
     /** Resolve a single dependency with an collections */
     private function lookupRecursive($item)
     {
-        if (is_array($item)) {
-            $collection = array();
+        if (\is_array($item)) {
+            $collection = [];
             foreach ($item as $k => $v) {
                 $collection[$k] = $this->lookupRecursive($v);
             }

htdocs/includes/swiftmailer/lib/classes/Swift/EmbeddedFile.php

@@ -26,8 +26,8 @@ class Swift_EmbeddedFile extends Swift_Mime_EmbeddedFile
      */
     public function __construct($data = null, $filename = null, $contentType = null)
     {
-        call_user_func_array(
-            array($this, 'Swift_Mime_EmbeddedFile::__construct'),
+        \call_user_func_array(
+            [$this, 'Swift_Mime_EmbeddedFile::__construct'],
             Swift_DependencyContainer::getInstance()
                 ->createDependenciesFor('mime.embeddedfile')
             );

htdocs/includes/swiftmailer/lib/classes/Swift/Encoder/Base64Encoder.php

@@ -34,7 +34,7 @@ class Swift_Encoder_Base64Encoder implements Swift_Encoder
             $maxLineLength = 76;
         }
 
-        $encodedString = base64_encode($string);
+        $encodedString = base64_encode($string ?? '');
         $firstLine = '';
 
         if (0 != $firstLineOffset) {

htdocs/includes/swiftmailer/lib/classes/Swift/Encoder/QpEncoder.php

@@ -36,7 +36,7 @@ class Swift_Encoder_QpEncoder implements Swift_Encoder
      *
      * @var string[]
      */
-    protected static $qpMap = array(
+    protected static $qpMap = [
         0 => '=00', 1 => '=01', 2 => '=02', 3 => '=03', 4 => '=04',
         5 => '=05', 6 => '=06', 7 => '=07', 8 => '=08', 9 => '=09',
         10 => '=0A', 11 => '=0B', 12 => '=0C', 13 => '=0D', 14 => '=0E',
@@ -89,16 +89,16 @@ class Swift_Encoder_QpEncoder implements Swift_Encoder
         245 => '=F5', 246 => '=F6', 247 => '=F7', 248 => '=F8', 249 => '=F9',
         250 => '=FA', 251 => '=FB', 252 => '=FC', 253 => '=FD', 254 => '=FE',
         255 => '=FF',
-        );
+        ];
 
-    protected static $safeMapShare = array();
+    protected static $safeMapShare = [];
 
     /**
      * A map of non-encoded ascii characters.
      *
      * @var string[]
      */
-    protected $safeMap = array();
+    protected $safeMap = [];
 
     /**
      * Creates a new QpEncoder for the given CharacterStream.
@@ -120,7 +120,7 @@ class Swift_Encoder_QpEncoder implements Swift_Encoder
 
     public function __sleep()
     {
-        return array('charStream', 'filter');
+        return ['charStream', 'filter'];
     }
 
     public function __wakeup()
@@ -135,14 +135,14 @@ class Swift_Encoder_QpEncoder implements Swift_Encoder
 
     protected function getSafeMapShareId()
     {
-        return get_class($this);
+        return static::class;
     }
 
     protected function initSafeMap()
     {
         foreach (array_merge(
-            array(0x09, 0x20), range(0x21, 0x3C), range(0x3E, 0x7E)) as $byte) {
-            $this->safeMap[$byte] = chr($byte);
+            [0x09, 0x20], range(0x21, 0x3C), range(0x3E, 0x7E)) as $byte) {
+            $this->safeMap[$byte] = \chr($byte);
         }
     }
 
@@ -153,9 +153,9 @@ class Swift_Encoder_QpEncoder implements Swift_Encoder
      * If the first line needs to be shorter, indicate the difference with
      * $firstLineOffset.
      *
-     * @param string $string           to encode
-     * @param int    $firstLineOffset, optional
-     * @param int    $maxLineLength,   optional 0 indicates the default of 76 chars
+     * @param string $string          to encode
+     * @param int    $firstLineOffset optional
+     * @param int    $maxLineLength   optional 0 indicates the default of 76 chars
      *
      * @return string
      */
@@ -167,7 +167,7 @@ class Swift_Encoder_QpEncoder implements Swift_Encoder
 
         $thisLineLength = $maxLineLength - $firstLineOffset;
 
-        $lines = array();
+        $lines = [];
         $lNo = 0;
         $lines[$lNo] = '';
         $currentLine = &$lines[$lNo++];
@@ -200,7 +200,7 @@ class Swift_Encoder_QpEncoder implements Swift_Encoder
             $enc = $this->encodeByteSequence($bytes, $size);
 
             $i = strpos($enc, '=0D=0A');
-            $newLineLength = $lineLen + ($i === false ? $size : $i);
+            $newLineLength = $lineLen + (false === $i ? $size : $i);
 
             if ($currentLine && $newLineLength >= $thisLineLength) {
                 $lines[$lNo] = '';
@@ -211,7 +211,7 @@ class Swift_Encoder_QpEncoder implements Swift_Encoder
 
             $currentLine .= $enc;
 
-            if ($i === false) {
+            if (false === $i) {
                 $lineLen += $size;
             } else {
                 // 6 is the length of '=0D=0A'.
@@ -278,10 +278,10 @@ class Swift_Encoder_QpEncoder implements Swift_Encoder
      */
     protected function standardize($string)
     {
-        $string = str_replace(array("\t=0D=0A", ' =0D=0A', '=0D=0A'),
-            array("=09\r\n", "=20\r\n", "\r\n"), $string
+        $string = str_replace(["\t=0D=0A", ' =0D=0A', '=0D=0A'],
+            ["=09\r\n", "=20\r\n", "\r\n"], $string
             );
-        switch ($end = ord(substr($string, -1))) {
+        switch ($end = \ord(substr($string, -1))) {
             case 0x09:
             case 0x20:
                 $string = substr_replace($string, self::$qpMap[$end], -1);

htdocs/includes/swiftmailer/lib/classes/Swift/Encoder/Rfc2231Encoder.php

@@ -24,8 +24,6 @@ class Swift_Encoder_Rfc2231Encoder implements Swift_Encoder
 
     /**
      * Creates a new Rfc2231Encoder using the given character stream instance.
-     *
-     * @param Swift_CharacterStream
      */
     public function __construct(Swift_CharacterStream $charStream)
     {
@@ -44,7 +42,7 @@ class Swift_Encoder_Rfc2231Encoder implements Swift_Encoder
      */
     public function encodeString($string, $firstLineOffset = 0, $maxLineLength = 0)
     {
-        $lines = array();
+        $lines = [];
         $lineCount = 0;
         $lines[] = '';
         $currentLine = &$lines[$lineCount++];
@@ -60,8 +58,8 @@ class Swift_Encoder_Rfc2231Encoder implements Swift_Encoder
 
         while (false !== $char = $this->charStream->read(4)) {
             $encodedChar = rawurlencode($char);
-            if (0 != strlen($currentLine)
-                && strlen($currentLine.$encodedChar) > $thisLineLength) {
+            if (0 != \strlen($currentLine)
+                && \strlen($currentLine.$encodedChar) > $thisLineLength) {
                 $lines[] = '';
                 $currentLine = &$lines[$lineCount++];
                 $thisLineLength = $maxLineLength;

htdocs/includes/swiftmailer/lib/classes/Swift/Events/CommandEvent.php

@@ -27,16 +27,15 @@ class Swift_Events_CommandEvent extends Swift_Events_EventObject
      *
      * @var int[]
      */
-    private $successCodes = array();
+    private $successCodes = [];
 
     /**
      * Create a new CommandEvent for $source with $command.
      *
-     * @param Swift_Transport $source
-     * @param string          $command
-     * @param array           $successCodes
+     * @param string $command
+     * @param array  $successCodes
      */
-    public function __construct(Swift_Transport $source, $command, $successCodes = array())
+    public function __construct(Swift_Transport $source, $command, $successCodes = [])
     {
         parent::__construct($source);
         $this->command = $command;

htdocs/includes/swiftmailer/lib/classes/Swift/Events/CommandListener.php

@@ -17,8 +17,6 @@ interface Swift_Events_CommandListener extends Swift_Events_EventListener
 {
     /**
      * Invoked immediately following a command being sent.
-     *
-     * @param Swift_Events_CommandEvent $evt
      */
     public function commandSent(Swift_Events_CommandEvent $evt);
 }

htdocs/includes/swiftmailer/lib/classes/Swift/Events/EventDispatcher.php

@@ -18,9 +18,6 @@ interface Swift_Events_EventDispatcher
     /**
      * Create a new SendEvent for $source and $message.
      *
-     * @param Swift_Transport $source
-     * @param Swift_Mime_SimpleMessage
-     *
      * @return Swift_Events_SendEvent
      */
     public function createSendEvent(Swift_Transport $source, Swift_Mime_SimpleMessage $message);
@@ -28,20 +25,18 @@ interface Swift_Events_EventDispatcher
     /**
      * Create a new CommandEvent for $source and $command.
      *
-     * @param Swift_Transport $source
-     * @param string          $command      That will be executed
-     * @param array           $successCodes That are needed
+     * @param string $command      That will be executed
+     * @param array  $successCodes That are needed
      *
      * @return Swift_Events_CommandEvent
      */
-    public function createCommandEvent(Swift_Transport $source, $command, $successCodes = array());
+    public function createCommandEvent(Swift_Transport $source, $command, $successCodes = []);
 
     /**
      * Create a new ResponseEvent for $source and $response.
      *
-     * @param Swift_Transport $source
-     * @param string          $response
-     * @param bool            $valid    If the response is valid
+     * @param string $response
+     * @param bool   $valid    If the response is valid
      *
      * @return Swift_Events_ResponseEvent
      */
@@ -50,8 +45,6 @@ interface Swift_Events_EventDispatcher
     /**
      * Create a new TransportChangeEvent for $source.
      *
-     * @param Swift_Transport $source
-     *
      * @return Swift_Events_TransportChangeEvent
      */
     public function createTransportChangeEvent(Swift_Transport $source);
@@ -59,25 +52,19 @@ interface Swift_Events_EventDispatcher
     /**
      * Create a new TransportExceptionEvent for $source.
      *
-     * @param Swift_Transport          $source
-     * @param Swift_TransportException $ex
-     *
      * @return Swift_Events_TransportExceptionEvent
      */
     public function createTransportExceptionEvent(Swift_Transport $source, Swift_TransportException $ex);
 
     /**
      * Bind an event listener to this dispatcher.
-     *
-     * @param Swift_Events_EventListener $listener
      */
     public function bindEventListener(Swift_Events_EventListener $listener);
 
     /**
      * Dispatch the given Event to all suitable listeners.
      *
-     * @param Swift_Events_EventObject $evt
-     * @param string                   $target method
+     * @param string $target method
      */
     public function dispatchEvent(Swift_Events_EventObject $evt, $target);
 }

htdocs/includes/swiftmailer/lib/classes/Swift/Events/EventObject.php

@@ -43,8 +43,6 @@ class Swift_Events_EventObject implements Swift_Events_Event
 
     /**
      * Prevent this Event from bubbling any further up the stack.
-     *
-     * @param bool $cancel, optional
      */
     public function cancelBubble($cancel = true)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/Events/ResponseEvent.php

@@ -32,9 +32,8 @@ class Swift_Events_ResponseEvent extends Swift_Events_EventObject
     /**
      * Create a new ResponseEvent for $source and $response.
      *
-     * @param Swift_Transport $source
-     * @param string          $response
-     * @param bool            $valid
+     * @param string $response
+     * @param bool   $valid
      */
     public function __construct(Swift_Transport $source, $response, $valid = false)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/Events/ResponseListener.php

@@ -17,8 +17,6 @@ interface Swift_Events_ResponseListener extends Swift_Events_EventListener
 {
     /**
      * Invoked immediately following a response coming back.
-     *
-     * @param Swift_Events_ResponseEvent $evt
      */
     public function responseReceived(Swift_Events_ResponseEvent $evt);
 }

htdocs/includes/swiftmailer/lib/classes/Swift/Events/SendEvent.php

@@ -42,7 +42,7 @@ class Swift_Events_SendEvent extends Swift_Events_EventObject
      *
      * @var string[]
      */
-    private $failedRecipients = array();
+    private $failedRecipients = [];
 
     /**
      * The overall result as a bitmask from the class constants.
@@ -53,9 +53,6 @@ class Swift_Events_SendEvent extends Swift_Events_EventObject
 
     /**
      * Create a new SendEvent for $source and $message.
-     *
-     * @param Swift_Transport          $source
-     * @param Swift_Mime_SimpleMessage $message
      */
     public function __construct(Swift_Transport $source, Swift_Mime_SimpleMessage $message)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/Events/SendListener.php

@@ -17,15 +17,11 @@ interface Swift_Events_SendListener extends Swift_Events_EventListener
 {
     /**
      * Invoked immediately before the Message is sent.
-     *
-     * @param Swift_Events_SendEvent $evt
      */
     public function beforeSendPerformed(Swift_Events_SendEvent $evt);
 
     /**
      * Invoked immediately after the Message is sent.
-     *
-     * @param Swift_Events_SendEvent $evt
      */
     public function sendPerformed(Swift_Events_SendEvent $evt);
 }

htdocs/includes/swiftmailer/lib/classes/Swift/Events/SimpleEventDispatcher.php

@@ -16,34 +16,28 @@
 class Swift_Events_SimpleEventDispatcher implements Swift_Events_EventDispatcher
 {
     /** A map of event types to their associated listener types */
-    private $eventMap = array();
+    private $eventMap = [];
 
     /** Event listeners bound to this dispatcher */
-    private $listeners = array();
-
-    /** Listeners queued to have an Event bubbled up the stack to them */
-    private $bubbleQueue = array();
+    private $listeners = [];
 
     /**
      * Create a new EventDispatcher.
      */
     public function __construct()
     {
-        $this->eventMap = array(
+        $this->eventMap = [
             'Swift_Events_CommandEvent' => 'Swift_Events_CommandListener',
             'Swift_Events_ResponseEvent' => 'Swift_Events_ResponseListener',
             'Swift_Events_SendEvent' => 'Swift_Events_SendListener',
             'Swift_Events_TransportChangeEvent' => 'Swift_Events_TransportChangeListener',
             'Swift_Events_TransportExceptionEvent' => 'Swift_Events_TransportExceptionListener',
-            );
+            ];
     }
 
     /**
      * Create a new SendEvent for $source and $message.
      *
-     * @param Swift_Transport $source
-     * @param Swift_Mime_SimpleMessage
-     *
      * @return Swift_Events_SendEvent
      */
     public function createSendEvent(Swift_Transport $source, Swift_Mime_SimpleMessage $message)
@@ -54,13 +48,12 @@ class Swift_Events_SimpleEventDispatcher implements Swift_Events_EventDispatcher
     /**
      * Create a new CommandEvent for $source and $command.
      *
-     * @param Swift_Transport $source
-     * @param string          $command      That will be executed
-     * @param array           $successCodes That are needed
+     * @param string $command      That will be executed
+     * @param array  $successCodes That are needed
      *
      * @return Swift_Events_CommandEvent
      */
-    public function createCommandEvent(Swift_Transport $source, $command, $successCodes = array())
+    public function createCommandEvent(Swift_Transport $source, $command, $successCodes = [])
     {
         return new Swift_Events_CommandEvent($source, $command, $successCodes);
     }
@@ -68,9 +61,8 @@ class Swift_Events_SimpleEventDispatcher implements Swift_Events_EventDispatcher
     /**
      * Create a new ResponseEvent for $source and $response.
      *
-     * @param Swift_Transport $source
-     * @param string          $response
-     * @param bool            $valid    If the response is valid
+     * @param string $response
+     * @param bool   $valid    If the response is valid
      *
      * @return Swift_Events_ResponseEvent
      */
@@ -82,8 +74,6 @@ class Swift_Events_SimpleEventDispatcher implements Swift_Events_EventDispatcher
     /**
      * Create a new TransportChangeEvent for $source.
      *
-     * @param Swift_Transport $source
-     *
      * @return Swift_Events_TransportChangeEvent
      */
     public function createTransportChangeEvent(Swift_Transport $source)
@@ -94,9 +84,6 @@ class Swift_Events_SimpleEventDispatcher implements Swift_Events_EventDispatcher
     /**
      * Create a new TransportExceptionEvent for $source.
      *
-     * @param Swift_Transport          $source
-     * @param Swift_TransportException $ex
-     *
      * @return Swift_Events_TransportExceptionEvent
      */
     public function createTransportExceptionEvent(Swift_Transport $source, Swift_TransportException $ex)
@@ -106,8 +93,6 @@ class Swift_Events_SimpleEventDispatcher implements Swift_Events_EventDispatcher
 
     /**
      * Bind an event listener to this dispatcher.
-     *
-     * @param Swift_Events_EventListener $listener
      */
     public function bindEventListener(Swift_Events_EventListener $listener)
     {
@@ -123,34 +108,35 @@ class Swift_Events_SimpleEventDispatcher implements Swift_Events_EventDispatcher
     /**
      * Dispatch the given Event to all suitable listeners.
      *
-     * @param Swift_Events_EventObject $evt
-     * @param string                   $target method
+     * @param string $target method
      */
     public function dispatchEvent(Swift_Events_EventObject $evt, $target)
     {
-        $this->prepareBubbleQueue($evt);
-        $this->bubble($evt, $target);
+        $bubbleQueue = $this->prepareBubbleQueue($evt);
+        $this->bubble($bubbleQueue, $evt, $target);
     }
 
     /** Queue listeners on a stack ready for $evt to be bubbled up it */
     private function prepareBubbleQueue(Swift_Events_EventObject $evt)
     {
-        $this->bubbleQueue = array();
-        $evtClass = get_class($evt);
+        $bubbleQueue = [];
+        $evtClass = \get_class($evt);
         foreach ($this->listeners as $listener) {
-            if (array_key_exists($evtClass, $this->eventMap)
+            if (\array_key_exists($evtClass, $this->eventMap)
                 && ($listener instanceof $this->eventMap[$evtClass])) {
-                $this->bubbleQueue[] = $listener;
+                $bubbleQueue[] = $listener;
             }
         }
+
+        return $bubbleQueue;
     }
 
     /** Bubble $evt up the stack calling $target() on each listener */
-    private function bubble(Swift_Events_EventObject $evt, $target)
+    private function bubble(array &$bubbleQueue, Swift_Events_EventObject $evt, $target)
     {
-        if (!$evt->bubbleCancelled() && $listener = array_shift($this->bubbleQueue)) {
+        if (!$evt->bubbleCancelled() && $listener = array_shift($bubbleQueue)) {
             $listener->$target($evt);
-            $this->bubble($evt, $target);
+            $this->bubble($bubbleQueue, $evt, $target);
         }
     }
 }

htdocs/includes/swiftmailer/lib/classes/Swift/Events/TransportChangeListener.php

@@ -17,29 +17,21 @@ interface Swift_Events_TransportChangeListener extends Swift_Events_EventListene
 {
     /**
      * Invoked just before a Transport is started.
-     *
-     * @param Swift_Events_TransportChangeEvent $evt
      */
     public function beforeTransportStarted(Swift_Events_TransportChangeEvent $evt);
 
     /**
      * Invoked immediately after the Transport is started.
-     *
-     * @param Swift_Events_TransportChangeEvent $evt
      */
     public function transportStarted(Swift_Events_TransportChangeEvent $evt);
 
     /**
      * Invoked just before a Transport is stopped.
-     *
-     * @param Swift_Events_TransportChangeEvent $evt
      */
     public function beforeTransportStopped(Swift_Events_TransportChangeEvent $evt);
 
     /**
      * Invoked immediately after the Transport is stopped.
-     *
-     * @param Swift_Events_TransportChangeEvent $evt
      */
     public function transportStopped(Swift_Events_TransportChangeEvent $evt);
 }

htdocs/includes/swiftmailer/lib/classes/Swift/Events/TransportExceptionEvent.php

@@ -24,9 +24,6 @@ class Swift_Events_TransportExceptionEvent extends Swift_Events_EventObject
 
     /**
      * Create a new TransportExceptionEvent for $transport.
-     *
-     * @param Swift_Transport          $transport
-     * @param Swift_TransportException $ex
      */
     public function __construct(Swift_Transport $transport, Swift_TransportException $ex)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/Events/TransportExceptionListener.php

@@ -17,8 +17,6 @@ interface Swift_Events_TransportExceptionListener extends Swift_Events_EventList
 {
     /**
      * Invoked as a TransportException is thrown in the Transport system.
-     *
-     * @param Swift_Events_TransportExceptionEvent $evt
      */
     public function exceptionThrown(Swift_Events_TransportExceptionEvent $evt);
 }

htdocs/includes/swiftmailer/lib/classes/Swift/FailoverTransport.php

@@ -20,10 +20,10 @@ class Swift_FailoverTransport extends Swift_Transport_FailoverTransport
      *
      * @param Swift_Transport[] $transports
      */
-    public function __construct($transports = array())
+    public function __construct($transports = [])
     {
-        call_user_func_array(
-            array($this, 'Swift_Transport_FailoverTransport::__construct'),
+        \call_user_func_array(
+            [$this, 'Swift_Transport_FailoverTransport::__construct'],
             Swift_DependencyContainer::getInstance()
                 ->createDependenciesFor('transport.failover')
             );

htdocs/includes/swiftmailer/lib/classes/Swift/FileSpool.php

@@ -121,7 +121,7 @@ class Swift_FileSpool extends Swift_ConfigurableSpool
         foreach (new DirectoryIterator($this->path) as $file) {
             $file = $file->getRealPath();
 
-            if (substr($file, -16) == '.message.sending') {
+            if ('.message.sending' == substr($file, -16)) {
                 $lockedtime = filectime($file);
                 if ((time() - $lockedtime) > $timeout) {
                     rename($file, substr($file, 0, -8));
@@ -145,7 +145,7 @@ class Swift_FileSpool extends Swift_ConfigurableSpool
         /* Start the transport only if there are queued files to send */
         if (!$transport->isStarted()) {
             foreach ($directoryIterator as $file) {
-                if (substr($file->getRealPath(), -8) == '.message') {
+                if ('.message' == substr($file->getRealPath(), -8)) {
                     $transport->start();
                     break;
                 }
@@ -158,7 +158,7 @@ class Swift_FileSpool extends Swift_ConfigurableSpool
         foreach ($directoryIterator as $file) {
             $file = $file->getRealPath();
 
-            if (substr($file, -8) != '.message') {
+            if ('.message' != substr($file, -8)) {
                 continue;
             }
 
@@ -198,7 +198,7 @@ class Swift_FileSpool extends Swift_ConfigurableSpool
         // This string MUST stay FS safe, avoid special chars
         $base = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_-';
         $ret = '';
-        $strlen = strlen($base);
+        $strlen = \strlen($base);
         for ($i = 0; $i < $count; ++$i) {
             $ret .= $base[random_int(0, $strlen - 1)];
         }

htdocs/includes/swiftmailer/lib/classes/Swift/Filterable.php

@@ -18,8 +18,7 @@ interface Swift_Filterable
     /**
      * Add a new StreamFilter, referenced by $key.
      *
-     * @param Swift_StreamFilter $filter
-     * @param string             $key
+     * @param string $key
      */
     public function addFilter(Swift_StreamFilter $filter, $key);
 

htdocs/includes/swiftmailer/lib/classes/Swift/InputByteStream.php

@@ -52,7 +52,7 @@ interface Swift_InputByteStream
      *
      * @param Swift_InputByteStream $is
      */
-    public function bind(Swift_InputByteStream $is);
+    public function bind(self $is);
 
     /**
      * Remove an already bound stream.
@@ -63,7 +63,7 @@ interface Swift_InputByteStream
      *
      * @param Swift_InputByteStream $is
      */
-    public function unbind(Swift_InputByteStream $is);
+    public function unbind(self $is);
 
     /**
      * Flush the contents of the stream (empty it) and set the internal pointer

htdocs/includes/swiftmailer/lib/classes/Swift/IoException.php

@@ -18,9 +18,8 @@ class Swift_IoException extends Swift_SwiftException
     /**
      * Create a new IoException with $message.
      *
-     * @param string    $message
-     * @param int       $code
-     * @param Exception $previous
+     * @param string $message
+     * @param int    $code
      */
     public function __construct($message, $code = 0, Exception $previous = null)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/KeyCache.php

@@ -38,10 +38,9 @@ interface Swift_KeyCache
      *
      * @see MODE_WRITE, MODE_APPEND
      *
-     * @param string                 $nsKey
-     * @param string                 $itemKey
-     * @param Swift_OutputByteStream $os
-     * @param int                    $mode
+     * @param string $nsKey
+     * @param string $itemKey
+     * @param int    $mode
      */
     public function importFromByteStream($nsKey, $itemKey, Swift_OutputByteStream $os, $mode);
 

htdocs/includes/swiftmailer/lib/classes/Swift/KeyCache/ArrayKeyCache.php

@@ -20,7 +20,7 @@ class Swift_KeyCache_ArrayKeyCache implements Swift_KeyCache
      *
      * @var array
      */
-    private $contents = array();
+    private $contents = [];
 
     /**
      * An InputStream for cloning.
@@ -32,8 +32,6 @@ class Swift_KeyCache_ArrayKeyCache implements Swift_KeyCache
     /**
      * Create a new ArrayKeyCache with the given $stream for cloning to make
      * InputByteStreams.
-     *
-     * @param Swift_KeyCache_KeyCacheInputStream $stream
      */
     public function __construct(Swift_KeyCache_KeyCacheInputStream $stream)
     {
@@ -64,10 +62,7 @@ class Swift_KeyCache_ArrayKeyCache implements Swift_KeyCache
                 $this->contents[$nsKey][$itemKey] .= $string;
                 break;
             default:
-                throw new Swift_SwiftException(
-                    'Invalid mode ['.$mode.'] used to set nsKey='.
-                    $nsKey.', itemKey='.$itemKey
-                    );
+                throw new Swift_SwiftException('Invalid mode ['.$mode.'] used to set nsKey='.$nsKey.', itemKey='.$itemKey);
         }
     }
 
@@ -76,10 +71,9 @@ class Swift_KeyCache_ArrayKeyCache implements Swift_KeyCache
      *
      * @see MODE_WRITE, MODE_APPEND
      *
-     * @param string                 $nsKey
-     * @param string                 $itemKey
-     * @param Swift_OutputByteStream $os
-     * @param int                    $mode
+     * @param string $nsKey
+     * @param string $itemKey
+     * @param int    $mode
      */
     public function importFromByteStream($nsKey, $itemKey, Swift_OutputByteStream $os, $mode)
     {
@@ -87,6 +81,7 @@ class Swift_KeyCache_ArrayKeyCache implements Swift_KeyCache
         switch ($mode) {
             case self::MODE_WRITE:
                 $this->clearKey($nsKey, $itemKey);
+                // no break
             case self::MODE_APPEND:
                 if (!$this->hasKey($nsKey, $itemKey)) {
                     $this->contents[$nsKey][$itemKey] = '';
@@ -96,10 +91,7 @@ class Swift_KeyCache_ArrayKeyCache implements Swift_KeyCache
                 }
                 break;
             default:
-                throw new Swift_SwiftException(
-                    'Invalid mode ['.$mode.'] used to set nsKey='.
-                    $nsKey.', itemKey='.$itemKey
-                    );
+                throw new Swift_SwiftException('Invalid mode ['.$mode.'] used to set nsKey='.$nsKey.', itemKey='.$itemKey);
         }
     }
 
@@ -108,9 +100,8 @@ class Swift_KeyCache_ArrayKeyCache implements Swift_KeyCache
      *
      * NOTE: The stream will always write in append mode.
      *
-     * @param string                $nsKey
-     * @param string                $itemKey
-     * @param Swift_InputByteStream $writeThrough
+     * @param string $nsKey
+     * @param string $itemKey
      *
      * @return Swift_InputByteStream
      */
@@ -168,7 +159,7 @@ class Swift_KeyCache_ArrayKeyCache implements Swift_KeyCache
     {
         $this->prepareCache($nsKey);
 
-        return array_key_exists($itemKey, $this->contents[$nsKey]);
+        return \array_key_exists($itemKey, $this->contents[$nsKey]);
     }
 
     /**
@@ -199,8 +190,8 @@ class Swift_KeyCache_ArrayKeyCache implements Swift_KeyCache
      */
     private function prepareCache($nsKey)
     {
-        if (!array_key_exists($nsKey, $this->contents)) {
-            $this->contents[$nsKey] = array();
+        if (!\array_key_exists($nsKey, $this->contents)) {
+            $this->contents[$nsKey] = [];
         }
     }
 }

htdocs/includes/swiftmailer/lib/classes/Swift/KeyCache/DiskKeyCache.php

@@ -43,14 +43,13 @@ class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
      *
      * @var array
      */
-    private $keys = array();
+    private $keys = [];
 
     /**
      * Create a new DiskKeyCache with the given $stream for cloning to make
      * InputByteStreams, and the given $path to save to.
      *
-     * @param Swift_KeyCache_KeyCacheInputStream $stream
-     * @param string                             $path   to save to
+     * @param string $path to save to
      */
     public function __construct(Swift_KeyCache_KeyCacheInputStream $stream, $path)
     {
@@ -81,10 +80,7 @@ class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
                 $fp = $this->getHandle($nsKey, $itemKey, self::POSITION_END);
                 break;
             default:
-                throw new Swift_SwiftException(
-                    'Invalid mode ['.$mode.'] used to set nsKey='.
-                    $nsKey.', itemKey='.$itemKey
-                    );
+                throw new Swift_SwiftException('Invalid mode ['.$mode.'] used to set nsKey='.$nsKey.', itemKey='.$itemKey);
                 break;
         }
         fwrite($fp, $string);
@@ -96,10 +92,9 @@ class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
      *
      * @see MODE_WRITE, MODE_APPEND
      *
-     * @param string                 $nsKey
-     * @param string                 $itemKey
-     * @param Swift_OutputByteStream $os
-     * @param int                    $mode
+     * @param string $nsKey
+     * @param string $itemKey
+     * @param int    $mode
      *
      * @throws Swift_IoException
      */
@@ -114,10 +109,7 @@ class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
                 $fp = $this->getHandle($nsKey, $itemKey, self::POSITION_END);
                 break;
             default:
-                throw new Swift_SwiftException(
-                    'Invalid mode ['.$mode.'] used to set nsKey='.
-                    $nsKey.', itemKey='.$itemKey
-                    );
+                throw new Swift_SwiftException('Invalid mode ['.$mode.'] used to set nsKey='.$nsKey.', itemKey='.$itemKey);
                 break;
         }
         while (false !== $bytes = $os->read(8192)) {
@@ -131,9 +123,8 @@ class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
      *
      * NOTE: The stream will always write in append mode.
      *
-     * @param string                $nsKey
-     * @param string                $itemKey
-     * @param Swift_InputByteStream $writeThrough
+     * @param string $nsKey
+     * @param string $itemKey
      *
      * @return Swift_InputByteStream
      */
@@ -227,7 +218,7 @@ class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
      */
     public function clearAll($nsKey)
     {
-        if (array_key_exists($nsKey, $this->keys)) {
+        if (\array_key_exists($nsKey, $this->keys)) {
             foreach ($this->keys[$nsKey] as $itemKey => $null) {
                 $this->clearKey($nsKey, $itemKey);
             }
@@ -250,7 +241,7 @@ class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
             if (!mkdir($cacheDir)) {
                 throw new Swift_IoException('Failed to create cache directory '.$cacheDir);
             }
-            $this->keys[$nsKey] = array();
+            $this->keys[$nsKey] = [];
         }
     }
 
@@ -295,4 +286,9 @@ class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
             $this->clearAll($nsKey);
         }
     }
+
+    public function __wakeup()
+    {
+        $this->keys = [];
+    }
 }

htdocs/includes/swiftmailer/lib/classes/Swift/KeyCache/KeyCacheInputStream.php

@@ -17,8 +17,6 @@ interface Swift_KeyCache_KeyCacheInputStream extends Swift_InputByteStream
 {
     /**
      * Set the KeyCache to wrap.
-     *
-     * @param Swift_KeyCache $keyCache
      */
     public function setKeyCache(Swift_KeyCache $keyCache);
 
@@ -38,8 +36,6 @@ interface Swift_KeyCache_KeyCacheInputStream extends Swift_InputByteStream
 
     /**
      * Specify a stream to write through for each write().
-     *
-     * @param Swift_InputByteStream $is
      */
     public function setWriteThroughStream(Swift_InputByteStream $is);
 

htdocs/includes/swiftmailer/lib/classes/Swift/KeyCache/NullKeyCache.php

@@ -34,10 +34,9 @@ class Swift_KeyCache_NullKeyCache implements Swift_KeyCache
      *
      * @see MODE_WRITE, MODE_APPEND
      *
-     * @param string                 $nsKey
-     * @param string                 $itemKey
-     * @param Swift_OutputByteStream $os
-     * @param int                    $mode
+     * @param string $nsKey
+     * @param string $itemKey
+     * @param int    $mode
      */
     public function importFromByteStream($nsKey, $itemKey, Swift_OutputByteStream $os, $mode)
     {
@@ -48,9 +47,8 @@ class Swift_KeyCache_NullKeyCache implements Swift_KeyCache
      *
      * NOTE: The stream will always write in append mode.
      *
-     * @param string                $nsKey
-     * @param string                $itemKey
-     * @param Swift_InputByteStream $writeThrough
+     * @param string $nsKey
+     * @param string $itemKey
      *
      * @return Swift_InputByteStream
      */

htdocs/includes/swiftmailer/lib/classes/Swift/KeyCache/SimpleKeyCacheInputStream.php

@@ -29,8 +29,6 @@ class Swift_KeyCache_SimpleKeyCacheInputStream implements Swift_KeyCache_KeyCach
 
     /**
      * Set the KeyCache to wrap.
-     *
-     * @param Swift_KeyCache $keyCache
      */
     public function setKeyCache(Swift_KeyCache $keyCache)
     {
@@ -39,8 +37,6 @@ class Swift_KeyCache_SimpleKeyCacheInputStream implements Swift_KeyCache_KeyCach
 
     /**
      * Specify a stream to write through for each write().
-     *
-     * @param Swift_InputByteStream $is
      */
     public function setWriteThroughStream(Swift_InputByteStream $is)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/LoadBalancedTransport.php

@@ -20,10 +20,10 @@ class Swift_LoadBalancedTransport extends Swift_Transport_LoadBalancedTransport
      *
      * @param array $transports
      */
-    public function __construct($transports = array())
+    public function __construct($transports = [])
     {
-        call_user_func_array(
-            array($this, 'Swift_Transport_LoadBalancedTransport::__construct'),
+        \call_user_func_array(
+            [$this, 'Swift_Transport_LoadBalancedTransport::__construct'],
             Swift_DependencyContainer::getInstance()
                 ->createDependenciesFor('transport.loadbalanced')
             );

htdocs/includes/swiftmailer/lib/classes/Swift/Mailer.php

@@ -20,8 +20,6 @@ class Swift_Mailer
 
     /**
      * Create a new Mailer using $transport for delivery.
-     *
-     * @param Swift_Transport $transport
      */
     public function __construct(Swift_Transport $transport)
     {
@@ -54,8 +52,7 @@ class Swift_Mailer
      * The return value is the number of recipients who were accepted for
      * delivery.
      *
-     * @param Swift_Mime_SimpleMessage $message
-     * @param array                    $failedRecipients An array of failures by-reference
+     * @param array $failedRecipients An array of failures by-reference
      *
      * @return int The number of successful recipients. Can be 0 which indicates failure
      */
@@ -63,6 +60,7 @@ class Swift_Mailer
     {
         $failedRecipients = (array) $failedRecipients;
 
+        // FIXME: to be removed in 7.0 (as transport must now start itself on send)
         if (!$this->transport->isStarted()) {
             $this->transport->start();
         }
@@ -82,8 +80,6 @@ class Swift_Mailer
 
     /**
      * Register a plugin using a known unique key (e.g. myPlugin).
-     *
-     * @param Swift_Events_EventListener $plugin
      */
     public function registerPlugin(Swift_Events_EventListener $plugin)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/Mailer/ArrayRecipientIterator.php

@@ -20,12 +20,10 @@ class Swift_Mailer_ArrayRecipientIterator implements Swift_Mailer_RecipientItera
      *
      * @var array
      */
-    private $recipients = array();
+    private $recipients = [];
 
     /**
      * Create a new ArrayRecipientIterator from $recipients.
-     *
-     * @param array $recipients
      */
     public function __construct(array $recipients)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/MemorySpool.php

@@ -15,7 +15,7 @@
  */
 class Swift_MemorySpool implements Swift_Spool
 {
-    protected $messages = array();
+    protected $messages = [];
     private $flushRetries = 3;
 
     /**

htdocs/includes/swiftmailer/lib/classes/Swift/Message.php

@@ -18,17 +18,17 @@ class Swift_Message extends Swift_Mime_SimpleMessage
     /**
      * @var Swift_Signers_HeaderSigner[]
      */
-    private $headerSigners = array();
+    private $headerSigners = [];
 
     /**
      * @var Swift_Signers_BodySigner[]
      */
-    private $bodySigners = array();
+    private $bodySigners = [];
 
     /**
      * @var array
      */
-    private $savedMessage = array();
+    private $savedMessage = [];
 
     /**
      * Create a new Message.
@@ -42,8 +42,8 @@ class Swift_Message extends Swift_Mime_SimpleMessage
      */
     public function __construct($subject = null, $body = null, $contentType = null, $charset = null)
     {
-        call_user_func_array(
-            array($this, 'Swift_Mime_SimpleMessage::__construct'),
+        \call_user_func_array(
+            [$this, 'Swift_Mime_SimpleMessage::__construct'],
             Swift_DependencyContainer::getInstance()
                 ->createDependenciesFor('mime.message')
             );
@@ -75,9 +75,7 @@ class Swift_Message extends Swift_Mime_SimpleMessage
     }
 
     /**
-     * Detach a signature handler from a message.
-     *
-     * @param Swift_Signer $signer
+     * Attach a new signature handler to the message.
      *
      * @return $this
      */
@@ -93,9 +91,7 @@ class Swift_Message extends Swift_Mime_SimpleMessage
     }
 
     /**
-     * Attach a new signature handler to the message.
-     *
-     * @param Swift_Signer $signer
+     * Detach a signature handler from a message.
      *
      * @return $this
      */
@@ -122,6 +118,19 @@ class Swift_Message extends Swift_Mime_SimpleMessage
         return $this;
     }
 
+    /**
+     * Clear all signature handlers attached to the message.
+     *
+     * @return $this
+     */
+    public function clearSigners()
+    {
+        $this->headerSigners = [];
+        $this->bodySigners = [];
+
+        return $this;
+    }
+
     /**
      * Get this message as a complete string.
      *
@@ -146,8 +155,6 @@ class Swift_Message extends Swift_Mime_SimpleMessage
 
     /**
      * Write this message to a {@link Swift_InputByteStream}.
-     *
-     * @param Swift_InputByteStream $is
      */
     public function toByteStream(Swift_InputByteStream $is)
     {
@@ -202,24 +209,22 @@ class Swift_Message extends Swift_Mime_SimpleMessage
      */
     protected function saveMessage()
     {
-        $this->savedMessage = array('headers' => array());
+        $this->savedMessage = ['headers' => []];
         $this->savedMessage['body'] = $this->getBody();
         $this->savedMessage['children'] = $this->getChildren();
-        if (count($this->savedMessage['children']) > 0 && $this->getBody() != '') {
-            $this->setChildren(array_merge(array($this->becomeMimePart()), $this->savedMessage['children']));
+        if (\count($this->savedMessage['children']) > 0 && '' != $this->getBody()) {
+            $this->setChildren(array_merge([$this->becomeMimePart()], $this->savedMessage['children']));
             $this->setBody('');
         }
     }
 
     /**
      * save the original headers.
-     *
-     * @param array $altered
      */
     protected function saveHeaders(array $altered)
     {
         foreach ($altered as $head) {
-            $lc = strtolower($head);
+            $lc = strtolower($head ?? '');
 
             if (!isset($this->savedMessage['headers'][$lc])) {
                 $this->savedMessage['headers'][$lc] = $this->getHeaders()->getAll($head);
@@ -252,7 +257,7 @@ class Swift_Message extends Swift_Mime_SimpleMessage
         $this->setChildren($this->savedMessage['children']);
 
         $this->restoreHeaders();
-        $this->savedMessage = array();
+        $this->savedMessage = [];
     }
 
     /**

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/Attachment.php

@@ -16,18 +16,14 @@
 class Swift_Mime_Attachment extends Swift_Mime_SimpleMimeEntity
 {
     /** Recognized MIME types */
-    private $mimeTypes = array();
+    private $mimeTypes = [];
 
     /**
      * Create a new Attachment with $headers, $encoder and $cache.
      *
-     * @param Swift_Mime_SimpleHeaderSet $headers
-     * @param Swift_Mime_ContentEncoder  $encoder
-     * @param Swift_KeyCache             $cache
-     * @param Swift_IdGenerator          $idGenerator
-     * @param array                      $mimeTypes
+     * @param array $mimeTypes
      */
-    public function __construct(Swift_Mime_SimpleHeaderSet $headers, Swift_Mime_ContentEncoder $encoder, Swift_KeyCache $cache, Swift_IdGenerator $idGenerator, $mimeTypes = array())
+    public function __construct(Swift_Mime_SimpleHeaderSet $headers, Swift_Mime_ContentEncoder $encoder, Swift_KeyCache $cache, Swift_IdGenerator $idGenerator, $mimeTypes = [])
     {
         parent::__construct($headers, $encoder, $cache, $idGenerator);
         $this->setDisposition('attachment');
@@ -127,8 +123,7 @@ class Swift_Mime_Attachment extends Swift_Mime_SimpleMimeEntity
     /**
      * Set the file that this attachment is for.
      *
-     * @param Swift_FileStream $file
-     * @param string           $contentType optional
+     * @param string $contentType optional
      *
      * @return $this
      */
@@ -139,7 +134,7 @@ class Swift_Mime_Attachment extends Swift_Mime_SimpleMimeEntity
         if (!isset($contentType)) {
             $extension = strtolower(substr($file->getPath(), strrpos($file->getPath(), '.') + 1));
 
-            if (array_key_exists($extension, $this->mimeTypes)) {
+            if (\array_key_exists($extension, $this->mimeTypes)) {
                 $this->setContentType($this->mimeTypes[$extension]);
             }
         }

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/Base64ContentEncoder.php

@@ -18,10 +18,7 @@ class Swift_Mime_ContentEncoder_Base64ContentEncoder extends Swift_Encoder_Base6
     /**
      * Encode stream $in to stream $out.
      *
-     * @param Swift_OutputByteStream $os
-     * @param Swift_InputByteStream  $is
-     * @param int                    $firstLineOffset
-     * @param int                    $maxLineLength,  optional, 0 indicates the default of 76 bytes
+     * @param int $firstLineOffset
      */
     public function encodeByteStream(Swift_OutputByteStream $os, Swift_InputByteStream $is, $firstLineOffset = 0, $maxLineLength = 0)
     {
@@ -30,7 +27,7 @@ class Swift_Mime_ContentEncoder_Base64ContentEncoder extends Swift_Encoder_Base6
         }
 
         $remainder = 0;
-        $base64ReadBufferRemainderBytes = null;
+        $base64ReadBufferRemainderBytes = '';
 
         // To reduce memory usage, the output buffer is streamed to the input buffer like so:
         //   Output Stream => base64encode => wrap line length => Input Stream
@@ -41,17 +38,17 @@ class Swift_Mime_ContentEncoder_Base64ContentEncoder extends Swift_Encoder_Base6
         // When the OutputStream is empty, we must flush any remainder bytes.
         while (true) {
             $readBytes = $os->read(8192);
-            $atEOF = ($readBytes === false);
+            $atEOF = (false === $readBytes);
 
             if ($atEOF) {
                 $streamTheseBytes = $base64ReadBufferRemainderBytes;
             } else {
                 $streamTheseBytes = $base64ReadBufferRemainderBytes.$readBytes;
             }
-            $base64ReadBufferRemainderBytes = null;
-            $bytesLength = strlen($streamTheseBytes);
+            $base64ReadBufferRemainderBytes = '';
+            $bytesLength = \strlen($streamTheseBytes);
 
-            if ($bytesLength === 0) { // no data left to encode
+            if (0 === $bytesLength) { // no data left to encode
                 break;
             }
 
@@ -59,7 +56,7 @@ class Swift_Mime_ContentEncoder_Base64ContentEncoder extends Swift_Encoder_Base6
             // and carry over remainder 1-2 bytes to the next loop iteration
             if (!$atEOF) {
                 $excessBytes = $bytesLength % 3;
-                if ($excessBytes !== 0) {
+                if (0 !== $excessBytes) {
                     $base64ReadBufferRemainderBytes = substr($streamTheseBytes, -$excessBytes);
                     $streamTheseBytes = substr($streamTheseBytes, 0, $bytesLength - $excessBytes);
                 }
@@ -69,7 +66,7 @@ class Swift_Mime_ContentEncoder_Base64ContentEncoder extends Swift_Encoder_Base6
             $encodedTransformed = '';
             $thisMaxLineLength = $maxLineLength - $remainder - $firstLineOffset;
 
-            while ($thisMaxLineLength < strlen($encoded)) {
+            while ($thisMaxLineLength < \strlen($encoded)) {
                 $encodedTransformed .= substr($encoded, 0, $thisMaxLineLength)."\r\n";
                 $firstLineOffset = 0;
                 $encoded = substr($encoded, $thisMaxLineLength);
@@ -77,7 +74,7 @@ class Swift_Mime_ContentEncoder_Base64ContentEncoder extends Swift_Encoder_Base6
                 $remainder = 0;
             }
 
-            if (0 < $remainingLength = strlen($encoded)) {
+            if (0 < $remainingLength = \strlen($encoded)) {
                 $remainder += $remainingLength;
                 $encodedTransformed .= $encoded;
                 $encoded = null;

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/NativeQpContentEncoder.php

@@ -16,16 +16,16 @@
 class Swift_Mime_ContentEncoder_NativeQpContentEncoder implements Swift_Mime_ContentEncoder
 {
     /**
-     * @var null|string
+     * @var string|null
      */
     private $charset;
 
     /**
-     * @param null|string $charset
+     * @param string|null $charset
      */
     public function __construct($charset = null)
     {
-        $this->charset = $charset ? $charset : 'utf-8';
+        $this->charset = $charset ?: 'utf-8';
     }
 
     /**
@@ -50,9 +50,8 @@ class Swift_Mime_ContentEncoder_NativeQpContentEncoder implements Swift_Mime_Con
      */
     public function encodeByteStream(Swift_OutputByteStream $os, Swift_InputByteStream $is, $firstLineOffset = 0, $maxLineLength = 0)
     {
-        if ($this->charset !== 'utf-8') {
-            throw new RuntimeException(
-                sprintf('Charset "%s" not supported. NativeQpContentEncoder only supports "utf-8"', $this->charset));
+        if ('utf-8' !== $this->charset) {
+            throw new RuntimeException(sprintf('Charset "%s" not supported. NativeQpContentEncoder only supports "utf-8"', $this->charset));
         }
 
         $string = '';
@@ -87,9 +86,8 @@ class Swift_Mime_ContentEncoder_NativeQpContentEncoder implements Swift_Mime_Con
      */
     public function encodeString($string, $firstLineOffset = 0, $maxLineLength = 0)
     {
-        if ($this->charset !== 'utf-8') {
-            throw new RuntimeException(
-                sprintf('Charset "%s" not supported. NativeQpContentEncoder only supports "utf-8"', $this->charset));
+        if ('utf-8' !== $this->charset) {
+            throw new RuntimeException(sprintf('Charset "%s" not supported. NativeQpContentEncoder only supports "utf-8"', $this->charset));
         }
 
         return $this->standardize(quoted_printable_encode($string));
@@ -107,9 +105,9 @@ class Swift_Mime_ContentEncoder_NativeQpContentEncoder implements Swift_Mime_Con
         // transform CR or LF to CRLF
         $string = preg_replace('~=0D(?!=0A)|(?<!=0D)=0A~', '=0D=0A', $string);
         // transform =0D=0A to CRLF
-        $string = str_replace(array("\t=0D=0A", ' =0D=0A', '=0D=0A'), array("=09\r\n", "=20\r\n", "\r\n"), $string);
+        $string = str_replace(["\t=0D=0A", ' =0D=0A', '=0D=0A'], ["=09\r\n", "=20\r\n", "\r\n"], $string);
 
-        switch ($end = ord(substr($string, -1))) {
+        switch (\ord(substr($string, -1))) {
             case 0x09:
                 $string = substr_replace($string, '=09', -1);
                 break;

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/NullContentEncoder.php

@@ -0,0 +1,79 @@
+<?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.
+ */
+
+/**
+ * Handles the case where the email body is already encoded and you just need specify the correct
+ * encoding without actually changing the encoding of the body.
+ *
+ * @author Jan Flora <jf@penneo.com>
+ */
+class Swift_Mime_ContentEncoder_NullContentEncoder implements Swift_Mime_ContentEncoder
+{
+    /**
+     * The name of this encoding scheme (probably 7bit or 8bit).
+     *
+     * @var string
+     */
+    private $name;
+
+    /**
+     * Creates a new NullContentEncoder with $name (probably 7bit or 8bit).
+     *
+     * @param string $name
+     */
+    public function __construct($name)
+    {
+        $this->name = $name;
+    }
+
+    /**
+     * Encode a given string to produce an encoded string.
+     *
+     * @param string $string
+     * @param int    $firstLineOffset ignored
+     * @param int    $maxLineLength   ignored
+     *
+     * @return string
+     */
+    public function encodeString($string, $firstLineOffset = 0, $maxLineLength = 0)
+    {
+        return $string;
+    }
+
+    /**
+     * Encode stream $in to stream $out.
+     *
+     * @param int $firstLineOffset ignored
+     * @param int $maxLineLength   ignored
+     */
+    public function encodeByteStream(Swift_OutputByteStream $os, Swift_InputByteStream $is, $firstLineOffset = 0, $maxLineLength = 0)
+    {
+        while (false !== ($bytes = $os->read(8192))) {
+            $is->write($bytes);
+        }
+    }
+
+    /**
+     * Get the name of this encoding scheme.
+     *
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * Not used.
+     */
+    public function charsetChanged($charset)
+    {
+    }
+}

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/PlainContentEncoder.php

@@ -11,6 +11,10 @@
 /**
  * Handles binary/7/8-bit Transfer Encoding in Swift Mailer.
  *
+ * When sending 8-bit content over SMTP, you should use
+ * Swift_Transport_Esmtp_EightBitMimeHandler to enable the 8BITMIME SMTP
+ * extension.
+ *
  * @author Chris Corbyn
  */
 class Swift_Mime_ContentEncoder_PlainContentEncoder implements Swift_Mime_ContentEncoder
@@ -33,7 +37,7 @@ class Swift_Mime_ContentEncoder_PlainContentEncoder implements Swift_Mime_Conten
      * Creates a new PlainContentEncoder with $name (probably 7bit or 8bit).
      *
      * @param string $name
-     * @param bool   $canonical If canonicalization transformation should be done.
+     * @param bool   $canonical if canonicalization transformation should be done
      */
     public function __construct($name, $canonical = false)
     {
@@ -62,10 +66,8 @@ class Swift_Mime_ContentEncoder_PlainContentEncoder implements Swift_Mime_Conten
     /**
      * Encode stream $in to stream $out.
      *
-     * @param Swift_OutputByteStream $os
-     * @param Swift_InputByteStream  $is
-     * @param int                    $firstLineOffset ignored
-     * @param int                    $maxLineLength   optional, 0 means no wrapping will occur
+     * @param int $firstLineOffset ignored
+     * @param int $maxLineLength   optional, 0 means no wrapping will occur
      */
     public function encodeByteStream(Swift_OutputByteStream $os, Swift_InputByteStream $is, $firstLineOffset = 0, $maxLineLength = 0)
     {
@@ -82,7 +84,7 @@ class Swift_Mime_ContentEncoder_PlainContentEncoder implements Swift_Mime_Conten
 
             $is->write($wrapped);
         }
-        if (strlen($leftOver)) {
+        if (\strlen($leftOver)) {
             $is->write($leftOver);
         }
     }
@@ -121,7 +123,7 @@ class Swift_Mime_ContentEncoder_PlainContentEncoder implements Swift_Mime_Conten
 
         $originalLines = explode($le, $string);
 
-        $lines = array();
+        $lines = [];
         $lineCount = 0;
 
         foreach ($originalLines as $originalLine) {
@@ -132,8 +134,8 @@ class Swift_Mime_ContentEncoder_PlainContentEncoder implements Swift_Mime_Conten
             $chunks = preg_split('/(?<=\s)/', $originalLine);
 
             foreach ($chunks as $chunk) {
-                if (0 != strlen($currentLine)
-                    && strlen($currentLine.$chunk) > $length) {
+                if (0 != \strlen($currentLine)
+                    && \strlen($currentLine.$chunk) > $length) {
                     $lines[] = '';
                     $currentLine = &$lines[$lineCount++];
                 }
@@ -154,8 +156,8 @@ class Swift_Mime_ContentEncoder_PlainContentEncoder implements Swift_Mime_Conten
     private function canonicalize($string)
     {
         return str_replace(
-            array("\r\n", "\r", "\n"),
-            array("\n", "\n", "\r\n"),
+            ["\r\n", "\r", "\n"],
+            ["\n", "\n", "\r\n"],
             $string
             );
     }

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/QpContentEncoder.php

@@ -32,12 +32,12 @@ class Swift_Mime_ContentEncoder_QpContentEncoder extends Swift_Encoder_QpEncoder
 
     public function __sleep()
     {
-        return array('charStream', 'filter', 'dotEscape');
+        return ['charStream', 'filter', 'dotEscape'];
     }
 
     protected function getSafeMapShareId()
     {
-        return get_class($this).($this->dotEscape ? '.dotEscape' : '');
+        return static::class.($this->dotEscape ? '.dotEscape' : '');
     }
 
     protected function initSafeMap()
@@ -97,7 +97,7 @@ class Swift_Mime_ContentEncoder_QpContentEncoder extends Swift_Encoder_QpEncoder
             $enc = $this->encodeByteSequence($bytes, $size);
 
             $i = strpos($enc, '=0D=0A');
-            $newLineLength = $lineLen + ($i === false ? $size : $i);
+            $newLineLength = $lineLen + (false === $i ? $size : $i);
 
             if ($currentLine && $newLineLength >= $thisLineLength) {
                 $is->write($prepend.$this->standardize($currentLine));
@@ -109,14 +109,14 @@ class Swift_Mime_ContentEncoder_QpContentEncoder extends Swift_Encoder_QpEncoder
 
             $currentLine .= $enc;
 
-            if ($i === false) {
+            if (false === $i) {
                 $lineLen += $size;
             } else {
                 // 6 is the length of '=0D=0A'.
                 $lineLen = $size - strrpos($enc, '=0D=0A') - 6;
             }
         }
-        if (strlen($currentLine)) {
+        if (\strlen($currentLine)) {
             $is->write($prepend.$this->standardize($currentLine));
         }
     }

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/QpContentEncoderProxy.php

@@ -28,16 +28,14 @@ class Swift_Mime_ContentEncoder_QpContentEncoderProxy implements Swift_Mime_Cont
     private $nativeEncoder;
 
     /**
-     * @var null|string
+     * @var string|null
      */
     private $charset;
 
     /**
      * Constructor.
      *
-     * @param Swift_Mime_ContentEncoder_QpContentEncoder       $safeEncoder
-     * @param Swift_Mime_ContentEncoder_NativeQpContentEncoder $nativeEncoder
-     * @param string|null                                      $charset
+     * @param string|null $charset
      */
     public function __construct(Swift_Mime_ContentEncoder_QpContentEncoder $safeEncoder, Swift_Mime_ContentEncoder_NativeQpContentEncoder $nativeEncoder, $charset)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/RawContentEncoder.php

@@ -11,6 +11,9 @@
 /**
  * Handles raw Transfer Encoding in Swift Mailer.
  *
+ * When sending 8-bit content over SMTP, you should use
+ * Swift_Transport_Esmtp_EightBitMimeHandler to enable the 8BITMIME SMTP
+ * extension.
  *
  * @author Sebastiaan Stok <s.stok@rollerscapes.net>
  */
@@ -33,10 +36,8 @@ class Swift_Mime_ContentEncoder_RawContentEncoder implements Swift_Mime_ContentE
     /**
      * Encode stream $in to stream $out.
      *
-     * @param Swift_OutputByteStream $in
-     * @param Swift_InputByteStream  $out
-     * @param int                    $firstLineOffset ignored
-     * @param int                    $maxLineLength   ignored
+     * @param int $firstLineOffset ignored
+     * @param int $maxLineLength   ignored
      */
     public function encodeByteStream(Swift_OutputByteStream $os, Swift_InputByteStream $is, $firstLineOffset = 0, $maxLineLength = 0)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/EmbeddedFile.php

@@ -18,13 +18,9 @@ class Swift_Mime_EmbeddedFile extends Swift_Mime_Attachment
     /**
      * Creates a new Attachment with $headers and $encoder.
      *
-     * @param Swift_Mime_SimpleHeaderSet $headers
-     * @param Swift_Mime_ContentEncoder  $encoder
-     * @param Swift_KeyCache             $cache
-     * @param Swift_IdGenerator          $idGenerator
-     * @param array                      $mimeTypes   optional
+     * @param array $mimeTypes optional
      */
-    public function __construct(Swift_Mime_SimpleHeaderSet $headers, Swift_Mime_ContentEncoder $encoder, Swift_KeyCache $cache, Swift_IdGenerator $idGenerator, $mimeTypes = array())
+    public function __construct(Swift_Mime_SimpleHeaderSet $headers, Swift_Mime_ContentEncoder $encoder, Swift_KeyCache $cache, Swift_IdGenerator $idGenerator, $mimeTypes = [])
     {
         parent::__construct($headers, $encoder, $cache, $idGenerator, $mimeTypes);
         $this->setDisposition('inline');

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/EncodingObserver.php

@@ -17,8 +17,6 @@ interface Swift_Mime_EncodingObserver
 {
     /**
      * Notify this observer that the observed entity's ContentEncoder has changed.
-     *
-     * @param Swift_Mime_ContentEncoder $encoder
      */
     public function encoderChanged(Swift_Mime_ContentEncoder $encoder);
 }

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/Header.php

@@ -85,7 +85,7 @@ interface Swift_Mime_Header
     public function getFieldBody();
 
     /**
-     * Get this Header rendered as a compliant string.
+     * Get this Header rendered as a compliant string, including trailing CRLF.
      *
      * @return string
      */

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/HeaderEncoder/Base64HeaderEncoder.php

@@ -41,7 +41,7 @@ class Swift_Mime_HeaderEncoder_Base64HeaderEncoder extends Swift_Encoder_Base64E
      */
     public function encodeString($string, $firstLineOffset = 0, $maxLineLength = 0, $charset = 'utf-8')
     {
-        if (strtolower($charset) === 'iso-2022-jp') {
+        if ('iso-2022-jp' === strtolower($charset ?? '')) {
             $old = mb_internal_encoding();
             mb_internal_encoding('utf-8');
             $newstring = mb_encode_mimeheader($string, $charset, $this->getName(), "\r\n");

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/HeaderEncoder/QpHeaderEncoder.php

@@ -29,9 +29,9 @@ class Swift_Mime_HeaderEncoder_QpHeaderEncoder extends Swift_Encoder_QpEncoder i
     {
         foreach (array_merge(
             range(0x61, 0x7A), range(0x41, 0x5A),
-            range(0x30, 0x39), array(0x20, 0x21, 0x2A, 0x2B, 0x2D, 0x2F)
+            range(0x30, 0x39), [0x20, 0x21, 0x2A, 0x2B, 0x2D, 0x2F]
         ) as $byte) {
-            $this->safeMap[$byte] = chr($byte);
+            $this->safeMap[$byte] = \chr($byte);
         }
     }
 
@@ -58,7 +58,7 @@ class Swift_Mime_HeaderEncoder_QpHeaderEncoder extends Swift_Encoder_QpEncoder i
      */
     public function encodeString($string, $firstLineOffset = 0, $maxLineLength = 0)
     {
-        return str_replace(array(' ', '=20', "=\r\n"), array('_', '_', "\r\n"),
+        return str_replace([' ', '=20', "=\r\n"], ['_', '_', "\r\n"],
             parent::encodeString($string, $firstLineOffset, $maxLineLength)
         );
     }

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/Headers/AbstractHeader.php

@@ -109,8 +109,6 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
 
     /**
      * Set the encoder used for encoding the header.
-     *
-     * @param Swift_Mime_HeaderEncoder $encoder
      */
     public function setEncoder(Swift_Mime_HeaderEncoder $encoder)
     {
@@ -196,11 +194,9 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
     /**
      * Produces a compliant, formatted RFC 2822 'phrase' based on the string given.
      *
-     * @param Swift_Mime_Header        $header
-     * @param string                   $string  as displayed
-     * @param string                   $charset of the text
-     * @param Swift_Mime_HeaderEncoder $encoder
-     * @param bool                     $shorten the first line to make remove for header name
+     * @param string $string  as displayed
+     * @param string $charset of the text
+     * @param bool   $shorten the first line to make remove for header name
      *
      * @return string
      */
@@ -214,13 +210,13 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
             // .. but it is just ascii text, try escaping some characters
             // and make it a quoted-string
             if (preg_match('/^[\x00-\x08\x0B\x0C\x0E-\x7F]*$/D', $phraseStr)) {
-                $phraseStr = $this->escapeSpecials($phraseStr, array('"'));
+                $phraseStr = $this->escapeSpecials($phraseStr, ['"']);
                 $phraseStr = '"'.$phraseStr.'"';
             } else {
                 // ... otherwise it needs encoding
                 // Determine space remaining on line if first line
                 if ($shorten) {
-                    $usedLength = strlen($header->getFieldName().': ');
+                    $usedLength = \strlen($header->getFieldName().': ');
                 } else {
                     $usedLength = 0;
                 }
@@ -239,9 +235,9 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
      *
      * @return string
      */
-    private function escapeSpecials($token, $include = array())
+    private function escapeSpecials($token, $include = [])
     {
-        foreach (array_merge(array('\\'), $include) as $char) {
+        foreach (array_merge(['\\'], $include) as $char) {
             $token = str_replace($char, '\\'.$char, $token);
         }
 
@@ -251,9 +247,8 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
     /**
      * Encode needed word tokens within a string of input.
      *
-     * @param Swift_Mime_Header $header
-     * @param string            $input
-     * @param string            $usedLength optional
+     * @param string $input
+     * @param string $usedLength optional
      *
      * @return string
      */
@@ -276,7 +271,7 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
                 }
 
                 if (-1 == $usedLength) {
-                    $usedLength = strlen($header->getFieldName().': ') + strlen($value);
+                    $usedLength = \strlen($header->getFieldName().': ') + \strlen($value);
                 }
                 $value .= $this->getTokenAsEncodedWord($token, $usedLength);
 
@@ -310,22 +305,22 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
      */
     protected function getEncodableWordTokens($string)
     {
-        $tokens = array();
+        $tokens = [];
 
         $encodedToken = '';
         // Split at all whitespace boundaries
-        foreach (preg_split('~(?=[\t ])~', $string) as $token) {
+        foreach (preg_split('~(?=[\t ])~', $string ?? '') as $token) {
             if ($this->tokenNeedsEncoding($token)) {
                 $encodedToken .= $token;
             } else {
-                if (strlen($encodedToken) > 0) {
+                if (\strlen($encodedToken) > 0) {
                     $tokens[] = $encodedToken;
                     $encodedToken = '';
                 }
                 $tokens[] = $token;
             }
         }
-        if (strlen($encodedToken)) {
+        if (\strlen($encodedToken)) {
             $tokens[] = $encodedToken;
         }
 
@@ -347,7 +342,7 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
         if (isset($this->lang)) {
             $charsetDecl .= '*'.$this->lang;
         }
-        $encodingWrapperLength = strlen(
+        $encodingWrapperLength = \strlen(
             '=?'.$charsetDecl.'?'.$this->encoder->getName().'??='
             );
 
@@ -359,10 +354,10 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
         $encodedTextLines = explode("\r\n",
             $this->encoder->encodeString(
                 $token, $firstLineOffset, 75 - $encodingWrapperLength, $this->charset
-                )
+            ) ?? ''
         );
 
-        if (strtolower($this->charset) !== 'iso-2022-jp') {
+        if ('iso-2022-jp' !== strtolower($this->charset ?? '')) {
             // special encoding for iso-2022-jp using mb_encode_mimeheader
             foreach ($encodedTextLines as $lineNum => $line) {
                 $encodedTextLines[$lineNum] = '=?'.$charsetDecl.
@@ -383,7 +378,7 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
      */
     protected function generateTokenLines($token)
     {
-        return preg_split('~(\r\n)~', $token, -1, PREG_SPLIT_DELIM_CAPTURE);
+        return preg_split('~(\r\n)~', $token ?? '', -1, PREG_SPLIT_DELIM_CAPTURE);
     }
 
     /**
@@ -431,10 +426,10 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
             $string = $this->getFieldBody();
         }
 
-        $tokens = array();
+        $tokens = [];
 
         // Generate atoms; split at all invisible boundaries followed by WSP
-        foreach (preg_split('~(?=[ \t])~', $string) as $token) {
+        foreach (preg_split('~(?=[ \t])~', $string ?? '') as $token) {
             $newTokens = $this->generateTokenLines($token);
             foreach ($newTokens as $newToken) {
                 $tokens[] = $newToken;
@@ -455,7 +450,7 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
     private function tokensToString(array $tokens)
     {
         $lineCount = 0;
-        $headerLines = array();
+        $headerLines = [];
         $headerLines[] = $this->name.': ';
         $currentLine = &$headerLines[$lineCount++];
 
@@ -463,8 +458,8 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
         foreach ($tokens as $i => $token) {
             // Line longer than specified maximum or token was just a new line
             if (("\r\n" == $token) ||
-                ($i > 0 && strlen($currentLine.$token) > $this->lineLength)
-                && 0 < strlen($currentLine)) {
+                ($i > 0 && \strlen($currentLine.$token) > $this->lineLength)
+                && 0 < \strlen($currentLine)) {
                 $headerLines[] = '';
                 $currentLine = &$headerLines[$lineCount++];
             }
@@ -478,4 +473,14 @@ abstract class Swift_Mime_Headers_AbstractHeader implements Swift_Mime_Header
         // Implode with FWS (RFC 2822, 2.2.3)
         return implode("\r\n", $headerLines)."\r\n";
     }
+
+    /**
+     * Make a deep copy of object.
+     */
+    public function __clone()
+    {
+        if ($this->encoder) {
+            $this->encoder = clone $this->encoder;
+        }
+    }
 }

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/Headers/DateHeader.php

@@ -79,8 +79,6 @@ class Swift_Mime_Headers_DateHeader extends Swift_Mime_Headers_AbstractHeader
      * Set the date-time of the Date in this Header.
      *
      * If a DateTime instance is provided, it is converted to DateTimeImmutable.
-     *
-     * @param DateTimeInterface $dateTime
      */
     public function setDateTime(DateTimeInterface $dateTime)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/Headers/IdentificationHeader.php

@@ -9,6 +9,7 @@
  */
 
 use Egulias\EmailValidator\EmailValidator;
+use Egulias\EmailValidator\Validation\MessageIDValidation;
 use Egulias\EmailValidator\Validation\RFCValidation;
 
 /**
@@ -25,7 +26,7 @@ class Swift_Mime_Headers_IdentificationHeader extends Swift_Mime_Headers_Abstrac
      *
      * @var string[]
      */
-    private $ids = array();
+    private $ids = [];
 
     /**
      * The strict EmailValidator.
@@ -34,16 +35,18 @@ class Swift_Mime_Headers_IdentificationHeader extends Swift_Mime_Headers_Abstrac
      */
     private $emailValidator;
 
+    private $addressEncoder;
+
     /**
      * Creates a new IdentificationHeader with the given $name and $id.
      *
-     * @param string         $name
-     * @param EmailValidator $emailValidator
+     * @param string $name
      */
-    public function __construct($name, EmailValidator $emailValidator)
+    public function __construct($name, EmailValidator $emailValidator, Swift_AddressEncoder $addressEncoder = null)
     {
         $this->setFieldName($name);
         $this->emailValidator = $emailValidator;
+        $this->addressEncoder = $addressEncoder ?? new Swift_AddressEncoder_IdnAddressEncoder();
     }
 
     /**
@@ -94,7 +97,7 @@ class Swift_Mime_Headers_IdentificationHeader extends Swift_Mime_Headers_Abstrac
      */
     public function setId($id)
     {
-        $this->setIds(is_array($id) ? $id : array($id));
+        $this->setIds(\is_array($id) ? $id : [$id]);
     }
 
     /**
@@ -106,7 +109,7 @@ class Swift_Mime_Headers_IdentificationHeader extends Swift_Mime_Headers_Abstrac
      */
     public function getId()
     {
-        if (count($this->ids) > 0) {
+        if (\count($this->ids) > 0) {
             return $this->ids[0];
         }
     }
@@ -120,7 +123,7 @@ class Swift_Mime_Headers_IdentificationHeader extends Swift_Mime_Headers_Abstrac
      */
     public function setIds(array $ids)
     {
-        $actualIds = array();
+        $actualIds = [];
 
         foreach ($ids as $id) {
             $this->assertValidId($id);
@@ -156,10 +159,10 @@ class Swift_Mime_Headers_IdentificationHeader extends Swift_Mime_Headers_Abstrac
     public function getFieldBody()
     {
         if (!$this->getCachedValue()) {
-            $angleAddrs = array();
+            $angleAddrs = [];
 
             foreach ($this->ids as $id) {
-                $angleAddrs[] = '<'.$id.'>';
+                $angleAddrs[] = '<'.$this->addressEncoder->encodeString($id).'>';
             }
 
             $this->setCachedValue(implode(' ', $angleAddrs));
@@ -177,7 +180,9 @@ class Swift_Mime_Headers_IdentificationHeader extends Swift_Mime_Headers_Abstrac
      */
     private function assertValidId($id)
     {
-        if (!$this->emailValidator->isValid($id, new RFCValidation())) {
+        $emailValidation = class_exists(MessageIDValidation::class) ? new MessageIDValidation() : new RFCValidation();
+
+        if (!$this->emailValidator->isValid($id, $emailValidation)) {
             throw new Swift_RfcComplianceException('Invalid ID given <'.$id.'>');
         }
     }

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/Headers/MailboxHeader.php

@@ -23,7 +23,7 @@ class Swift_Mime_Headers_MailboxHeader extends Swift_Mime_Headers_AbstractHeader
      *
      * @var string[]
      */
-    private $mailboxes = array();
+    private $mailboxes = [];
 
     /**
      * The strict EmailValidator.
@@ -32,18 +32,19 @@ class Swift_Mime_Headers_MailboxHeader extends Swift_Mime_Headers_AbstractHeader
      */
     private $emailValidator;
 
+    private $addressEncoder;
+
     /**
      * Creates a new MailboxHeader with $name.
      *
-     * @param string                   $name           of Header
-     * @param Swift_Mime_HeaderEncoder $encoder
-     * @param EmailValidator           $emailValidator
+     * @param string $name of Header
      */
-    public function __construct($name, Swift_Mime_HeaderEncoder $encoder, EmailValidator $emailValidator)
+    public function __construct($name, Swift_Mime_HeaderEncoder $encoder, EmailValidator $emailValidator, Swift_AddressEncoder $addressEncoder = null)
     {
         $this->setFieldName($name);
         $this->setEncoder($encoder);
         $this->emailValidator = $emailValidator;
+        $this->addressEncoder = $addressEncoder ?? new Swift_AddressEncoder_IdnAddressEncoder();
     }
 
     /**
@@ -257,10 +258,10 @@ class Swift_Mime_Headers_MailboxHeader extends Swift_Mime_Headers_AbstractHeader
      */
     protected function normalizeMailboxes(array $mailboxes)
     {
-        $actualMailboxes = array();
+        $actualMailboxes = [];
 
         foreach ($mailboxes as $key => $value) {
-            if (is_string($key)) {
+            if (\is_string($key)) {
                 //key is email addr
                 $address = $key;
                 $name = $value;
@@ -327,10 +328,10 @@ class Swift_Mime_Headers_MailboxHeader extends Swift_Mime_Headers_AbstractHeader
      */
     private function createNameAddressStrings(array $mailboxes)
     {
-        $strings = array();
+        $strings = [];
 
         foreach ($mailboxes as $email => $name) {
-            $mailboxStr = $email;
+            $mailboxStr = $this->addressEncoder->encodeString($email);
             if (null !== $name) {
                 $nameStr = $this->createDisplayNameString($name, empty($strings));
                 $mailboxStr = $nameStr.' <'.$mailboxStr.'>';
@@ -346,14 +347,12 @@ class Swift_Mime_Headers_MailboxHeader extends Swift_Mime_Headers_AbstractHeader
      *
      * @param string $address
      *
-     * @throws Swift_RfcComplianceException If invalid.
+     * @throws Swift_RfcComplianceException if invalid
      */
     private function assertValidAddress($address)
     {
         if (!$this->emailValidator->isValid($address, new RFCValidation())) {
-            throw new Swift_RfcComplianceException(
-                'Address in mailbox given ['.$address.'] does not comply with RFC 2822, 3.6.2.'
-            );
+            throw new Swift_RfcComplianceException('Address in mailbox given ['.$address.'] does not comply with RFC 2822, 3.6.2.');
         }
     }
 }

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/Headers/OpenDKIMHeader.php

@@ -12,6 +12,8 @@
  * An OpenDKIM Specific Header using only raw header datas without encoding.
  *
  * @author De Cock Xavier <xdecock@gmail.com>
+ *
+ * @deprecated since SwiftMailer 6.1.0; use Swift_Signers_DKIMSigner instead.
  */
 class Swift_Mime_Headers_OpenDKIMHeader implements Swift_Mime_Header
 {
@@ -111,7 +113,7 @@ class Swift_Mime_Headers_OpenDKIMHeader implements Swift_Mime_Header
      */
     public function toString()
     {
-        return $this->fieldName.': '.$this->value;
+        return $this->fieldName.': '.$this->value."\r\n";
     }
 
     /**

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/Headers/ParameterizedHeader.php

@@ -34,14 +34,12 @@ class Swift_Mime_Headers_ParameterizedHeader extends Swift_Mime_Headers_Unstruct
      *
      * @var string[]
      */
-    private $params = array();
+    private $params = [];
 
     /**
      * Creates a new ParameterizedHeader with $name.
      *
-     * @param string                   $name
-     * @param Swift_Mime_HeaderEncoder $encoder
-     * @param Swift_Encoder            $paramEncoder, optional
+     * @param string $name
      */
     public function __construct($name, Swift_Mime_HeaderEncoder $encoder, Swift_Encoder $paramEncoder = null)
     {
@@ -83,7 +81,7 @@ class Swift_Mime_Headers_ParameterizedHeader extends Swift_Mime_Headers_Unstruct
      */
     public function setParameter($parameter, $value)
     {
-        $this->setParameters(array_merge($this->getParameters(), array($parameter => $value)));
+        $this->setParameters(array_merge($this->getParameters(), [$parameter => $value]));
     }
 
     /**
@@ -97,7 +95,7 @@ class Swift_Mime_Headers_ParameterizedHeader extends Swift_Mime_Headers_Unstruct
     {
         $params = $this->getParameters();
 
-        return isset($params[$parameter]) ? $params[$parameter] : null;
+        return $params[$parameter] ?? null;
     }
 
     /**
@@ -157,7 +155,7 @@ class Swift_Mime_Headers_ParameterizedHeader extends Swift_Mime_Headers_Unstruct
         foreach ($this->params as $name => $value) {
             if (null !== $value) {
                 // Add the semi-colon separator
-                $tokens[count($tokens) - 1] .= ';';
+                $tokens[\count($tokens) - 1] .= ';';
                 $tokens = array_merge($tokens, $this->generateTokenLines(
                     ' '.$this->createParameter($name, $value)
                     ));
@@ -181,7 +179,7 @@ class Swift_Mime_Headers_ParameterizedHeader extends Swift_Mime_Headers_Unstruct
 
         $encoded = false;
         // Allow room for parameter name, indices, "=" and DQUOTEs
-        $maxValueLength = $this->getMaxLineLength() - strlen($name.'=*N"";') - 1;
+        $maxValueLength = $this->getMaxLineLength() - \strlen($name.'=*N"";') - 1;
         $firstLineOffset = 0;
 
         // If it's not already a valid parameter value...
@@ -191,15 +189,15 @@ class Swift_Mime_Headers_ParameterizedHeader extends Swift_Mime_Headers_Unstruct
             if (!preg_match('/^[\x00-\x08\x0B\x0C\x0E-\x7F]*$/D', $value)) {
                 $encoded = true;
                 // Allow space for the indices, charset and language
-                $maxValueLength = $this->getMaxLineLength() - strlen($name.'*N*="";') - 1;
-                $firstLineOffset = strlen(
+                $maxValueLength = $this->getMaxLineLength() - \strlen($name.'*N*="";') - 1;
+                $firstLineOffset = \strlen(
                     $this->getCharset()."'".$this->getLanguage()."'"
                     );
             }
         }
 
         // Encode if we need to
-        if ($encoded || strlen($value) > $maxValueLength) {
+        if ($encoded || \strlen($value) > $maxValueLength) {
             if (isset($this->paramEncoder)) {
                 $value = $this->paramEncoder->encodeString(
                     $origValue, $firstLineOffset, $maxValueLength, $this->getCharset()
@@ -211,14 +209,14 @@ class Swift_Mime_Headers_ParameterizedHeader extends Swift_Mime_Headers_Unstruct
             }
         }
 
-        $valueLines = isset($this->paramEncoder) ? explode("\r\n", $value) : array($value);
+        $valueLines = isset($this->paramEncoder) ? explode("\r\n", $value) : [$value];
 
         // Need to add indices
-        if (count($valueLines) > 1) {
-            $paramLines = array();
+        if (\count($valueLines) > 1) {
+            $paramLines = [];
             foreach ($valueLines as $i => $line) {
                 $paramLines[] = $name.'*'.$i.
-                    $this->getEndOfParameterValue($line, true, $i == 0);
+                    $this->getEndOfParameterValue($line, true, 0 == $i);
             }
 
             return implode(";\r\n ", $paramLines);

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/Headers/PathHeader.php

@@ -32,16 +32,18 @@ class Swift_Mime_Headers_PathHeader extends Swift_Mime_Headers_AbstractHeader
      */
     private $emailValidator;
 
+    private $addressEncoder;
+
     /**
      * Creates a new PathHeader with the given $name.
      *
-     * @param string         $name
-     * @param EmailValidator $emailValidator
+     * @param string $name
      */
-    public function __construct($name, EmailValidator $emailValidator)
+    public function __construct($name, EmailValidator $emailValidator, Swift_AddressEncoder $addressEncoder = null)
     {
         $this->setFieldName($name);
         $this->emailValidator = $emailValidator;
+        $this->addressEncoder = $addressEncoder ?? new Swift_AddressEncoder_IdnAddressEncoder();
     }
 
     /**
@@ -127,7 +129,8 @@ class Swift_Mime_Headers_PathHeader extends Swift_Mime_Headers_AbstractHeader
     {
         if (!$this->getCachedValue()) {
             if (isset($this->address)) {
-                $this->setCachedValue('<'.$this->address.'>');
+                $address = $this->addressEncoder->encodeString($this->address);
+                $this->setCachedValue('<'.$address.'>');
             }
         }
 
@@ -144,9 +147,7 @@ class Swift_Mime_Headers_PathHeader extends Swift_Mime_Headers_AbstractHeader
     private function assertValidAddress($address)
     {
         if (!$this->emailValidator->isValid($address, new RFCValidation())) {
-            throw new Swift_RfcComplianceException(
-                'Address set in PathHeader does not comply with addr-spec of RFC 2822.'
-            );
+            throw new Swift_RfcComplianceException('Address set in PathHeader does not comply with addr-spec of RFC 2822.');
         }
     }
 }

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/Headers/UnstructuredHeader.php

@@ -25,8 +25,7 @@ class Swift_Mime_Headers_UnstructuredHeader extends Swift_Mime_Headers_AbstractH
     /**
      * Creates a new SimpleHeader with $name.
      *
-     * @param string                   $name
-     * @param Swift_Mime_HeaderEncoder $encoder
+     * @param string $name
      */
     public function __construct($name, Swift_Mime_HeaderEncoder $encoder)
     {

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/IdGenerator.php

@@ -13,6 +13,8 @@
  */
 class Swift_Mime_IdGenerator implements Swift_IdGenerator
 {
+    private $idRight;
+
     /**
      * @param string $idRight
      */
@@ -46,8 +48,7 @@ class Swift_Mime_IdGenerator implements Swift_IdGenerator
      */
     public function generateId()
     {
-        $idLeft = md5(getmypid().'.'.time().'.'.uniqid(mt_rand(), true));
-
-        return $idLeft.'@'.$this->idRight;
+        // 32 hex values for the left part
+        return bin2hex(random_bytes(16)).'@'.$this->idRight;
     }
 }

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/MimePart.php

@@ -30,11 +30,7 @@ class Swift_Mime_MimePart extends Swift_Mime_SimpleMimeEntity
     /**
      * Create a new MimePart with $headers, $encoder and $cache.
      *
-     * @param Swift_Mime_SimpleHeaderSet $headers
-     * @param Swift_Mime_ContentEncoder  $encoder
-     * @param Swift_KeyCache             $cache
-     * @param Swift_IdGenerator          $idGenerator
-     * @param string                     $charset
+     * @param string $charset
      */
     public function __construct(Swift_Mime_SimpleHeaderSet $headers, Swift_Mime_ContentEncoder $encoder, Swift_KeyCache $cache, Swift_IdGenerator $idGenerator, $charset = null)
     {
@@ -173,7 +169,7 @@ class Swift_Mime_MimePart extends Swift_Mime_SimpleMimeEntity
     protected function fixHeaders()
     {
         parent::fixHeaders();
-        if (count($this->getChildren())) {
+        if (\count($this->getChildren())) {
             $this->setHeaderParameter('Content-Type', 'charset', null);
             $this->setHeaderParameter('Content-Type', 'format', null);
             $this->setHeaderParameter('Content-Type', 'delsp', null);
@@ -193,18 +189,9 @@ class Swift_Mime_MimePart extends Swift_Mime_SimpleMimeEntity
     /** Encode charset when charset is not utf-8 */
     protected function convertString($string)
     {
-        $charset = strtolower($this->getCharset());
-        if (!in_array($charset, array('utf-8', 'iso-8859-1', 'iso-8859-15', ''))) {
-            // mb_convert_encoding must be the first one to check, since iconv cannot convert some words.
-            if (function_exists('mb_convert_encoding')) {
-                $string = mb_convert_encoding($string, $charset, 'utf-8');
-            } elseif (function_exists('iconv')) {
-                $string = iconv('utf-8//TRANSLIT//IGNORE', $charset, $string);
-            } else {
-                throw new Swift_SwiftException('No suitable convert encoding function (use UTF-8 as your charset or install the mbstring or iconv extension).');
-            }
-
-            return $string;
+        $charset = strtolower($this->getCharset() ?? '');
+        if (!\in_array($charset, ['utf-8', 'iso-8859-1', 'iso-8859-15', ''])) {
+            return mb_convert_encoding($string, $charset, 'utf-8');
         }
 
         return $string;

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/SimpleHeaderFactory.php

@@ -23,29 +23,27 @@ class Swift_Mime_SimpleHeaderFactory implements Swift_Mime_CharsetObserver
     /** The Encoder used by parameters */
     private $paramEncoder;
 
-    /** The Grammar */
-    private $grammar;
-
     /** Strict EmailValidator */
     private $emailValidator;
 
     /** The charset of created Headers */
     private $charset;
 
+    /** Swift_AddressEncoder */
+    private $addressEncoder;
+
     /**
      * Creates a new SimpleHeaderFactory using $encoder and $paramEncoder.
      *
-     * @param Swift_Mime_HeaderEncoder $encoder
-     * @param Swift_Encoder            $paramEncoder
-     * @param EmailValidator           $emailValidator
-     * @param string|null              $charset
+     * @param string|null $charset
      */
-    public function __construct(Swift_Mime_HeaderEncoder $encoder, Swift_Encoder $paramEncoder, EmailValidator $emailValidator, $charset = null)
+    public function __construct(Swift_Mime_HeaderEncoder $encoder, Swift_Encoder $paramEncoder, EmailValidator $emailValidator, $charset = null, Swift_AddressEncoder $addressEncoder = null)
     {
         $this->encoder = $encoder;
         $this->paramEncoder = $paramEncoder;
         $this->emailValidator = $emailValidator;
         $this->charset = $charset;
+        $this->addressEncoder = $addressEncoder ?? new Swift_AddressEncoder_IdnAddressEncoder();
     }
 
     /**
@@ -58,7 +56,7 @@ class Swift_Mime_SimpleHeaderFactory implements Swift_Mime_CharsetObserver
      */
     public function createMailboxHeader($name, $addresses = null)
     {
-        $header = new Swift_Mime_Headers_MailboxHeader($name, $this->encoder, $this->emailValidator);
+        $header = new Swift_Mime_Headers_MailboxHeader($name, $this->encoder, $this->emailValidator, $this->addressEncoder);
         if (isset($addresses)) {
             $header->setFieldBodyModel($addresses);
         }
@@ -70,8 +68,7 @@ class Swift_Mime_SimpleHeaderFactory implements Swift_Mime_CharsetObserver
     /**
      * Create a new Date header using $dateTime.
      *
-     * @param string                 $name
-     * @param DateTimeInterface|null $dateTime
+     * @param string $name
      *
      * @return Swift_Mime_Header
      */
@@ -114,9 +111,9 @@ class Swift_Mime_SimpleHeaderFactory implements Swift_Mime_CharsetObserver
      *
      * @return Swift_Mime_Headers_ParameterizedHeader
      */
-    public function createParameterizedHeader($name, $value = null, $params = array())
+    public function createParameterizedHeader($name, $value = null, $params = [])
     {
-        $header = new Swift_Mime_Headers_ParameterizedHeader($name, $this->encoder, (strtolower($name) == 'content-disposition') ? $this->paramEncoder : null);
+        $header = new Swift_Mime_Headers_ParameterizedHeader($name, $this->encoder, ('content-disposition' == strtolower($name ?? '')) ? $this->paramEncoder : null);
         if (isset($value)) {
             $header->setFieldBodyModel($value);
         }
@@ -185,6 +182,7 @@ class Swift_Mime_SimpleHeaderFactory implements Swift_Mime_CharsetObserver
     {
         $this->encoder = clone $this->encoder;
         $this->paramEncoder = clone $this->paramEncoder;
+        $this->addressEncoder = clone $this->addressEncoder;
     }
 
     /** Apply the charset to the Header */

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/SimpleHeaderSet.php

@@ -19,13 +19,13 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
     private $factory;
 
     /** Collection of set Headers */
-    private $headers = array();
+    private $headers = [];
 
     /** Field ordering details */
-    private $order = array();
+    private $order = [];
 
     /** List of fields which are required to be displayed */
-    private $required = array();
+    private $required = [];
 
     /** The charset used by Headers */
     private $charset;
@@ -33,8 +33,7 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
     /**
      * Create a new SimpleHeaderSet with the given $factory.
      *
-     * @param Swift_Mime_SimpleHeaderFactory $factory
-     * @param string                         $charset
+     * @param string $charset
      */
     public function __construct(Swift_Mime_SimpleHeaderFactory $factory, $charset = null)
     {
@@ -69,20 +68,17 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
      */
     public function addMailboxHeader($name, $addresses = null)
     {
-        $this->storeHeader($name,
-        $this->factory->createMailboxHeader($name, $addresses));
+        $this->storeHeader($name, $this->factory->createMailboxHeader($name, $addresses));
     }
 
     /**
      * Add a new Date header using $dateTime.
      *
-     * @param string            $name
-     * @param DateTimeInterface $dateTime
+     * @param string $name
      */
     public function addDateHeader($name, DateTimeInterface $dateTime = null)
     {
-        $this->storeHeader($name,
-        $this->factory->createDateHeader($name, $dateTime));
+        $this->storeHeader($name, $this->factory->createDateHeader($name, $dateTime));
     }
 
     /**
@@ -93,8 +89,7 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
      */
     public function addTextHeader($name, $value = null)
     {
-        $this->storeHeader($name,
-        $this->factory->createTextHeader($name, $value));
+        $this->storeHeader($name, $this->factory->createTextHeader($name, $value));
     }
 
     /**
@@ -104,7 +99,7 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
      * @param string $value
      * @param array  $params
      */
-    public function addParameterizedHeader($name, $value = null, $params = array())
+    public function addParameterizedHeader($name, $value = null, $params = [])
     {
         $this->storeHeader($name, $this->factory->createParameterizedHeader($name, $value, $params));
     }
@@ -143,18 +138,18 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
      */
     public function has($name, $index = 0)
     {
-        $lowerName = strtolower($name);
+        $lowerName = strtolower($name ?? '');
 
-        if (!array_key_exists($lowerName, $this->headers)) {
+        if (!\array_key_exists($lowerName, $this->headers)) {
             return false;
         }
 
-        if (func_num_args() < 2) {
+        if (\func_num_args() < 2) {
             // index was not specified, so we only need to check that there is at least one header value set
-            return (bool) count($this->headers[$lowerName]);
+            return (bool) \count($this->headers[$lowerName]);
         }
 
-        return array_key_exists($index, $this->headers[$lowerName]);
+        return \array_key_exists($index, $this->headers[$lowerName]);
     }
 
     /**
@@ -166,8 +161,7 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
      * If $index is specified, the header will be inserted into the set at this
      * offset.
      *
-     * @param Swift_Mime_Header $header
-     * @param int               $index
+     * @param int $index
      */
     public function set(Swift_Mime_Header $header, $index = 0)
     {
@@ -183,13 +177,13 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
      * @param string $name
      * @param int    $index
      *
-     * @return Swift_Mime_Header
+     * @return Swift_Mime_Header|null
      */
     public function get($name, $index = 0)
     {
-        $name = strtolower($name);
+        $name = strtolower($name ?? '');
 
-        if (func_num_args() < 2) {
+        if (\func_num_args() < 2) {
             if ($this->has($name)) {
                 $values = array_values($this->headers[$name]);
 
@@ -212,7 +206,7 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
     public function getAll($name = null)
     {
         if (!isset($name)) {
-            $headers = array();
+            $headers = [];
             foreach ($this->headers as $collection) {
                 $headers = array_merge($headers, $collection);
             }
@@ -220,9 +214,9 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
             return $headers;
         }
 
-        $lowerName = strtolower($name);
-        if (!array_key_exists($lowerName, $this->headers)) {
-            return array();
+        $lowerName = strtolower($name ?? '');
+        if (!\array_key_exists($lowerName, $this->headers)) {
+            return [];
         }
 
         return $this->headers[$lowerName];
@@ -237,7 +231,7 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
     {
         $headers = $this->headers;
         if ($this->canSort()) {
-            uksort($headers, array($this, 'sortHeaders'));
+            uksort($headers, [$this, 'sortHeaders']);
         }
 
         return array_keys($headers);
@@ -253,7 +247,7 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
      */
     public function remove($name, $index = 0)
     {
-        $lowerName = strtolower($name);
+        $lowerName = strtolower($name ?? '');
         unset($this->headers[$lowerName][$index]);
     }
 
@@ -264,7 +258,7 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
      */
     public function removeAll($name)
     {
-        $lowerName = strtolower($name);
+        $lowerName = strtolower($name ?? '');
         unset($this->headers[$lowerName]);
     }
 
@@ -272,8 +266,6 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
      * Define a list of Header names as an array in the correct order.
      *
      * These Headers will be output in the given order where present.
-     *
-     * @param array $sequence
      */
     public function defineOrdering(array $sequence)
     {
@@ -284,8 +276,6 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
      * Set a list of header names which must always be displayed when set.
      *
      * Usually headers without a field value won't be output unless set here.
-     *
-     * @param array $names
      */
     public function setAlwaysDisplayed(array $names)
     {
@@ -312,11 +302,11 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
         $string = '';
         $headers = $this->headers;
         if ($this->canSort()) {
-            uksort($headers, array($this, 'sortHeaders'));
+            uksort($headers, [$this, 'sortHeaders']);
         }
         foreach ($headers as $collection) {
             foreach ($collection as $header) {
-                if ($this->isDisplayed($header) || $header->getFieldBody() != '') {
+                if ($this->isDisplayed($header) || '' != $header->getFieldBody()) {
                     $string .= $header->toString();
                 }
             }
@@ -340,38 +330,38 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
     /** Save a Header to the internal collection */
     private function storeHeader($name, Swift_Mime_Header $header, $offset = null)
     {
-        if (!isset($this->headers[strtolower($name)])) {
-            $this->headers[strtolower($name)] = array();
+        if (!isset($this->headers[strtolower($name ?? '')])) {
+            $this->headers[strtolower($name ?? '')] = [];
         }
         if (!isset($offset)) {
-            $this->headers[strtolower($name)][] = $header;
+            $this->headers[strtolower($name ?? '')][] = $header;
         } else {
-            $this->headers[strtolower($name)][$offset] = $header;
+            $this->headers[strtolower($name ?? '')][$offset] = $header;
         }
     }
 
     /** Test if the headers can be sorted */
     private function canSort()
     {
-        return count($this->order) > 0;
+        return \count($this->order) > 0;
     }
 
     /** uksort() algorithm for Header ordering */
     private function sortHeaders($a, $b)
     {
-        $lowerA = strtolower($a);
-        $lowerB = strtolower($b);
-        $aPos = array_key_exists($lowerA, $this->order) ? $this->order[$lowerA] : -1;
-        $bPos = array_key_exists($lowerB, $this->order) ? $this->order[$lowerB] : -1;
+        $lowerA = strtolower($a ?? '');
+        $lowerB = strtolower($b ?? '');
+        $aPos = \array_key_exists($lowerA, $this->order) ? $this->order[$lowerA] : -1;
+        $bPos = \array_key_exists($lowerB, $this->order) ? $this->order[$lowerB] : -1;
 
         if (-1 === $aPos && -1 === $bPos) {
             // just be sure to be determinist here
             return $a > $b ? -1 : 1;
         }
 
-        if ($aPos == -1) {
+        if (-1 == $aPos) {
             return 1;
-        } elseif ($bPos == -1) {
+        } elseif (-1 == $bPos) {
             return -1;
         }
 
@@ -381,7 +371,7 @@ class Swift_Mime_SimpleHeaderSet implements Swift_Mime_CharsetObserver
     /** Test if the given Header is always displayed */
     private function isDisplayed(Swift_Mime_Header $header)
     {
-        return array_key_exists(strtolower($header->getFieldName()), $this->required);
+        return \array_key_exists(strtolower($header->getFieldName() ?? ''), $this->required);
     }
 
     /** Notify all Headers of the new charset */

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/SimpleMessage.php

@@ -24,16 +24,12 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
     /**
      * Create a new SimpleMessage with $headers, $encoder and $cache.
      *
-     * @param Swift_Mime_SimpleHeaderSet $headers
-     * @param Swift_Mime_ContentEncoder  $encoder
-     * @param Swift_KeyCache             $cache
-     * @param Swift_IdGenerator          $idGenerator
-     * @param string                     $charset
+     * @param string $charset
      */
     public function __construct(Swift_Mime_SimpleHeaderSet $headers, Swift_Mime_ContentEncoder $encoder, Swift_KeyCache $cache, Swift_IdGenerator $idGenerator, $charset = null)
     {
         parent::__construct($headers, $encoder, $cache, $idGenerator, $charset);
-        $this->getHeaders()->defineOrdering(array(
+        $this->getHeaders()->defineOrdering([
             'Return-Path',
             'Received',
             'DKIM-Signature',
@@ -50,8 +46,8 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
             'MIME-Version',
             'Content-Type',
             'Content-Transfer-Encoding',
-            ));
-        $this->getHeaders()->setAlwaysDisplayed(array('Date', 'Message-ID', 'From'));
+            ]);
+        $this->getHeaders()->setAlwaysDisplayed(['Date', 'Message-ID', 'From']);
         $this->getHeaders()->addTextHeader('MIME-Version', '1.0');
         $this->setDate(new DateTimeImmutable());
         $this->setId($this->getId());
@@ -97,8 +93,6 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
     /**
      * Set the date at which this message was created.
      *
-     * @param DateTimeInterface $dateTime
-     *
      * @return $this
      */
     public function setDate(DateTimeInterface $dateTime)
@@ -158,8 +152,8 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
      */
     public function setSender($address, $name = null)
     {
-        if (!is_array($address) && isset($name)) {
-            $address = array($address => $name);
+        if (!\is_array($address) && isset($name)) {
+            $address = [$address => $name];
         }
 
         if (!$this->setHeaderFieldModel('Sender', (array) $address)) {
@@ -212,8 +206,8 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
      */
     public function setFrom($addresses, $name = null)
     {
-        if (!is_array($addresses) && isset($name)) {
-            $addresses = array($addresses => $name);
+        if (!\is_array($addresses) && isset($name)) {
+            $addresses = [$addresses => $name];
         }
 
         if (!$this->setHeaderFieldModel('From', (array) $addresses)) {
@@ -266,8 +260,8 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
      */
     public function setReplyTo($addresses, $name = null)
     {
-        if (!is_array($addresses) && isset($name)) {
-            $addresses = array($addresses => $name);
+        if (!\is_array($addresses) && isset($name)) {
+            $addresses = [$addresses => $name];
         }
 
         if (!$this->setHeaderFieldModel('Reply-To', (array) $addresses)) {
@@ -321,8 +315,8 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
      */
     public function setTo($addresses, $name = null)
     {
-        if (!is_array($addresses) && isset($name)) {
-            $addresses = array($addresses => $name);
+        if (!\is_array($addresses) && isset($name)) {
+            $addresses = [$addresses => $name];
         }
 
         if (!$this->setHeaderFieldModel('To', (array) $addresses)) {
@@ -373,8 +367,8 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
      */
     public function setCc($addresses, $name = null)
     {
-        if (!is_array($addresses) && isset($name)) {
-            $addresses = array($addresses => $name);
+        if (!\is_array($addresses) && isset($name)) {
+            $addresses = [$addresses => $name];
         }
 
         if (!$this->setHeaderFieldModel('Cc', (array) $addresses)) {
@@ -425,8 +419,8 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
      */
     public function setBcc($addresses, $name = null)
     {
-        if (!is_array($addresses) && isset($name)) {
-            $addresses = array($addresses => $name);
+        if (!\is_array($addresses) && isset($name)) {
+            $addresses = [$addresses => $name];
         }
 
         if (!$this->setHeaderFieldModel('Bcc', (array) $addresses)) {
@@ -457,13 +451,13 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
      */
     public function setPriority($priority)
     {
-        $priorityMap = array(
+        $priorityMap = [
             self::PRIORITY_HIGHEST => 'Highest',
             self::PRIORITY_HIGH => 'High',
             self::PRIORITY_NORMAL => 'Normal',
             self::PRIORITY_LOW => 'Low',
             self::PRIORITY_LOWEST => 'Lowest',
-            );
+            ];
         $pMapKeys = array_keys($priorityMap);
         if ($priority > max($pMapKeys)) {
             $priority = max($pMapKeys);
@@ -493,7 +487,7 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
             '%[1-5]'
             );
 
-        return isset($priority) ? $priority : 3;
+        return $priority ?? 3;
     }
 
     /**
@@ -526,13 +520,11 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
     /**
      * Attach a {@link Swift_Mime_SimpleMimeEntity} such as an Attachment or MimePart.
      *
-     * @param Swift_Mime_SimpleMimeEntity $entity
-     *
      * @return $this
      */
     public function attach(Swift_Mime_SimpleMimeEntity $entity)
     {
-        $this->setChildren(array_merge($this->getChildren(), array($entity)));
+        $this->setChildren(array_merge($this->getChildren(), [$entity]));
 
         return $this;
     }
@@ -540,13 +532,11 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
     /**
      * Remove an already attached entity.
      *
-     * @param Swift_Mime_SimpleMimeEntity $entity
-     *
      * @return $this
      */
     public function detach(Swift_Mime_SimpleMimeEntity $entity)
     {
-        $newChildren = array();
+        $newChildren = [];
         foreach ($this->getChildren() as $child) {
             if ($entity !== $child) {
                 $newChildren[] = $child;
@@ -559,9 +549,8 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
 
     /**
      * Attach a {@link Swift_Mime_SimpleMimeEntity} and return it's CID source.
-     * This method should be used when embedding images or other data in a message.
      *
-     * @param Swift_Mime_SimpleMimeEntity $entity
+     * This method should be used when embedding images or other data in a message.
      *
      * @return string
      */
@@ -579,8 +568,8 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
      */
     public function toString()
     {
-        if (count($children = $this->getChildren()) > 0 && $this->getBody() != '') {
-            $this->setChildren(array_merge(array($this->becomeMimePart()), $children));
+        if (\count($children = $this->getChildren()) > 0 && '' != $this->getBody()) {
+            $this->setChildren(array_merge([$this->becomeMimePart()], $children));
             $string = parent::toString();
             $this->setChildren($children);
         } else {
@@ -604,13 +593,11 @@ class Swift_Mime_SimpleMessage extends Swift_Mime_MimePart
 
     /**
      * Write this message to a {@link Swift_InputByteStream}.
-     *
-     * @param Swift_InputByteStream $is
      */
     public function toByteStream(Swift_InputByteStream $is)
     {
-        if (count($children = $this->getChildren()) > 0 && $this->getBody() != '') {
-            $this->setChildren(array_merge(array($this->becomeMimePart()), $children));
+        if (\count($children = $this->getChildren()) > 0 && '' != $this->getBody()) {
+            $this->setChildren(array_merge([$this->becomeMimePart()], $children));
             parent::toByteStream($is);
             $this->setChildren($children);
         } else {

htdocs/includes/swiftmailer/lib/classes/Swift/Mime/SimpleMimeEntity.php

@@ -43,14 +43,14 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
     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),
-    );
+    private $compositeRanges = [
+        'multipart/mixed' => [self::LEVEL_TOP, self::LEVEL_MIXED],
+        'multipart/alternative' => [self::LEVEL_MIXED, self::LEVEL_ALTERNATIVE],
+        'multipart/related' => [self::LEVEL_ALTERNATIVE, self::LEVEL_RELATED],
+    ];
 
     /** A set of filter rules to define what level an entity should be nested at */
-    private $compoundLevelFilters = array();
+    private $compoundLevelFilters = [];
 
     /** The nesting level of this entity */
     private $nestingLevel = self::LEVEL_ALTERNATIVE;
@@ -59,20 +59,20 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
     private $cache;
 
     /** Direct descendants of this entity */
-    private $immediateChildren = array();
+    private $immediateChildren = [];
 
     /** All descendants of this entity */
-    private $children = array();
+    private $children = [];
 
     /** 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(
+    private $alternativePartOrder = [
         'text/plain' => 1,
         'text/html' => 2,
         'multipart/related' => 3,
-    );
+    ];
 
     /** The CID of this entity */
     private $id;
@@ -84,20 +84,15 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
 
     /**
      * Create a new SimpleMimeEntity with $headers, $encoder and $cache.
-     *
-     * @param Swift_Mime_SimpleHeaderSet $headers
-     * @param Swift_Mime_ContentEncoder  $encoder
-     * @param Swift_KeyCache             $cache
-     * @param Swift_IdGenerator          $idGenerator
      */
     public function __construct(Swift_Mime_SimpleHeaderSet $headers, Swift_Mime_ContentEncoder $encoder, Swift_KeyCache $cache, Swift_IdGenerator $idGenerator)
     {
-        $this->cacheKey = md5(getmypid().'.'.time().'.'.uniqid(mt_rand(), true));
+        $this->cacheKey = bin2hex(random_bytes(16)); // set 32 hex values
         $this->cache = $cache;
         $this->headers = $headers;
         $this->idGenerator = $idGenerator;
         $this->setEncoder($encoder);
-        $this->headers->defineOrdering(array('Content-Type', 'Content-Transfer-Encoding'));
+        $this->headers->defineOrdering(['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
@@ -112,14 +107,14 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
         //   )
         // )
 
-        $this->compoundLevelFilters = array(
-            (self::LEVEL_ALTERNATIVE + self::LEVEL_RELATED) => array(
-                self::LEVEL_ALTERNATIVE => array(
+        $this->compoundLevelFilters = [
+            (self::LEVEL_ALTERNATIVE + self::LEVEL_RELATED) => [
+                self::LEVEL_ALTERNATIVE => [
                     'text/plain' => self::LEVEL_ALTERNATIVE,
                     'text/html' => self::LEVEL_RELATED,
-                    ),
-                ),
-            );
+                    ],
+                ],
+            ];
 
         $this->id = $this->idGenerator->generateId();
     }
@@ -168,6 +163,16 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
         return $this->getHeaderFieldModel('Content-Type');
     }
 
+    /**
+     * Get the Body Content-type of this entity.
+     *
+     * @return string
+     */
+    public function getBodyContentType()
+    {
+        return $this->userContentType;
+    }
+
     /**
      * Set the Content-type of this entity.
      *
@@ -293,16 +298,16 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
     public function setChildren(array $children, $compoundLevel = null)
     {
         // TODO: Try to refactor this logic
-        $compoundLevel = isset($compoundLevel) ? $compoundLevel : $this->getCompoundLevel($children);
-        $immediateChildren = array();
-        $grandchildren = array();
+        $compoundLevel = $compoundLevel ?? $this->getCompoundLevel($children);
+        $immediateChildren = [];
+        $grandchildren = [];
         $newContentType = $this->userContentType;
 
         foreach ($children as $child) {
             $level = $this->getNeededChildLevel($child, $compoundLevel);
             if (empty($immediateChildren)) {
                 //first iteration
-                $immediateChildren = array($child);
+                $immediateChildren = [$child];
             } else {
                 $nextLevel = $this->getNeededChildLevel($immediateChildren[0], $compoundLevel);
                 if ($nextLevel == $level) {
@@ -311,7 +316,7 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
                     // Re-assign immediateChildren to grandchildren
                     $grandchildren = array_merge($grandchildren, $immediateChildren);
                     // Set new children
-                    $immediateChildren = array($child);
+                    $immediateChildren = [$child];
                 } else {
                     $grandchildren[] = $child;
                 }
@@ -375,7 +380,7 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
         }
 
         $this->body = $body;
-        if (isset($contentType)) {
+        if (null !== $contentType) {
             $this->setContentType($contentType);
         }
 
@@ -395,8 +400,6 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
     /**
      * Set the encoder used for the body of this entity.
      *
-     * @param Swift_Mime_ContentEncoder $encoder
-     *
      * @return $this
      */
     public function setEncoder(Swift_Mime_ContentEncoder $encoder)
@@ -420,7 +423,7 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
     public function getBoundary()
     {
         if (!isset($this->boundary)) {
-            $this->boundary = '_=_swift_'.time().'_'.md5(getmypid().'.'.time().'.'.uniqid(mt_rand(), true)).'_=_';
+            $this->boundary = '_=_swift_'.time().'_'.bin2hex(random_bytes(16)).'_=_';
         }
 
         return $this->boundary;
@@ -457,8 +460,6 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
     /**
      * 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)
     {
@@ -522,8 +523,6 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
 
     /**
      * Write this entire entity to a {@see Swift_InputByteStream}.
-     *
-     * @param Swift_InputByteStream
      */
     public function toByteStream(Swift_InputByteStream $is)
     {
@@ -535,8 +534,6 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
 
     /**
      * Write this entire entity to a {@link Swift_InputByteStream}.
-     *
-     * @param Swift_InputByteStream
      */
     protected function bodyToByteStream(Swift_InputByteStream $is)
     {
@@ -637,7 +634,7 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
      */
     protected function fixHeaders()
     {
-        if (count($this->immediateChildren)) {
+        if (\count($this->immediateChildren)) {
             $this->setHeaderParameter('Content-Type', 'boundary',
                 $this->getBoundary()
                 );
@@ -726,7 +723,7 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
 
     private function getNeededChildLevel($child, $compoundLevel)
     {
-        $filter = array();
+        $filter = [];
         foreach ($this->compoundLevelFilters as $bitmask => $rules) {
             if (($compoundLevel & $bitmask) === $bitmask) {
                 $filter = $rules + $filter;
@@ -734,7 +731,7 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
         }
 
         $realLevel = $child->getNestingLevel();
-        $lowercaseType = strtolower($child->getContentType());
+        $lowercaseType = strtolower($child->getContentType() ?? '');
 
         if (isset($filter[$realLevel]) && isset($filter[$realLevel][$lowercaseType])) {
             return $filter[$realLevel][$lowercaseType];
@@ -769,7 +766,7 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
         $shouldSort = false;
         foreach ($this->immediateChildren as $child) {
             // NOTE: This include alternative parts moved into a related part
-            if ($child->getNestingLevel() == self::LEVEL_ALTERNATIVE) {
+            if (self::LEVEL_ALTERNATIVE == $child->getNestingLevel()) {
                 $shouldSort = true;
                 break;
             }
@@ -778,13 +775,13 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
         // Sort in order of preference, if there is one
         if ($shouldSort) {
             // Group the messages by order of preference
-            $sorted = array();
+            $sorted = [];
             foreach ($this->immediateChildren as $child) {
                 $type = $child->getContentType();
-                $level = array_key_exists($type, $this->alternativePartOrder) ? $this->alternativePartOrder[$type] : max($this->alternativePartOrder) + 1;
+                $level = \array_key_exists($type, $this->alternativePartOrder) ? $this->alternativePartOrder[$type] : max($this->alternativePartOrder) + 1;
 
                 if (empty($sorted[$level])) {
-                    $sorted[$level] = array();
+                    $sorted[$level] = [];
                 }
 
                 $sorted[$level][] = $child;
@@ -792,7 +789,7 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
 
             ksort($sorted);
 
-            $this->immediateChildren = array_reduce($sorted, 'array_merge', array());
+            $this->immediateChildren = array_reduce($sorted, 'array_merge', []);
         }
     }
 
@@ -813,11 +810,17 @@ class Swift_Mime_SimpleMimeEntity implements Swift_Mime_CharsetObserver, Swift_M
     {
         $this->headers = clone $this->headers;
         $this->encoder = clone $this->encoder;
-        $this->cacheKey = md5(getmypid().'.'.time().'.'.uniqid(mt_rand(), true));
-        $children = array();
+        $this->cacheKey = bin2hex(random_bytes(16)); // set 32 hex values
+        $children = [];
         foreach ($this->children as $pos => $child) {
             $children[$pos] = clone $child;
         }
         $this->setChildren($children);
     }
+
+    public function __wakeup()
+    {
+        $this->cacheKey = bin2hex(random_bytes(16)); // set 32 hex values
+        $this->cache = new Swift_KeyCache_ArrayKeyCache(new Swift_KeyCache_SimpleKeyCacheInputStream());
+    }
 }

htdocs/includes/swiftmailer/lib/classes/Swift/MimePart.php

@@ -26,8 +26,8 @@ class Swift_MimePart extends Swift_Mime_MimePart
      */
     public function __construct($body = null, $contentType = null, $charset = null)
     {
-        call_user_func_array(
-            array($this, 'Swift_Mime_MimePart::__construct'),
+        \call_user_func_array(
+            [$this, 'Swift_Mime_MimePart::__construct'],
             Swift_DependencyContainer::getInstance()
                 ->createDependenciesFor('mime.part')
             );