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Size
Action
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AbstractHeader.php
10.366KB
edt
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DateHeader.php
1.348KB
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HeaderInterface.php
1.485KB
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Headers.php
8.979KB
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IdentificationHeader.php
2.328KB
edt
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MailboxHeader.php
1.922KB
edt
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MailboxListHeader.php
3.101KB
edt
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ParameterizedHeader.php
6.236KB
edt
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PathHeader.php
1.236KB
edt
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UnstructuredHeader.php
1.29KB
edt
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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Mime\Header; use Symfony\Component\Mime\Encoder\Rfc2231Encoder; /** * @author Chris Corbyn */ final class ParameterizedHeader extends UnstructuredHeader { /** * RFC 2231's definition of a token. * * @var string */ public const TOKEN_REGEX = '(?:[\x21\x23-\x27\x2A\x2B\x2D\x2E\x30-\x39\x41-\x5A\x5E-\x7E]+)'; private ?Rfc2231Encoder $encoder = null; private array $parameters = []; public function __construct(string $name, string $value, array $parameters = []) { parent::__construct($name, $value); foreach ($parameters as $k => $v) { $this->setParameter($k, $v); } if ('content-type' !== strtolower($name)) { $this->encoder = new Rfc2231Encoder(); } } public function setParameter(string $parameter, ?string $value): void { $this->setParameters(array_merge($this->getParameters(), [$parameter => $value])); } public function getParameter(string $parameter): string { return $this->getParameters()[$parameter] ?? ''; } /** * @param string[] $parameters */ public function setParameters(array $parameters): void { $this->parameters = $parameters; } /** * @return string[] */ public function getParameters(): array { return $this->parameters; } public function getBodyAsString(): string { $body = parent::getBodyAsString(); foreach ($this->parameters as $name => $value) { if (null !== $value) { $body .= '; '.$this->createParameter($name, $value); } } return $body; } /** * Generate a list of all tokens in the final header. * * This doesn't need to be overridden in theory, but it is for implementation * reasons to prevent potential breakage of attributes. */ protected function toTokens(?string $string = null): array { $tokens = parent::toTokens(parent::getBodyAsString()); // Try creating any parameters foreach ($this->parameters as $name => $value) { if (null !== $value) { // Add the semi-colon separator $tokens[\count($tokens) - 1] .= ';'; $tokens = array_merge($tokens, $this->generateTokenLines(' '.$this->createParameter($name, $value))); } } return $tokens; } /** * Render an RFC 2047 compliant header parameter from the $name and $value. */ private function createParameter(string $name, string $value): string { $origValue = $value; $encoded = false; // Allow room for parameter name, indices, "=" and DQUOTEs $maxValueLength = $this->getMaxLineLength() - \strlen($name.'=*N"";') - 1; $firstLineOffset = 0; // If it's not already a valid parameter value... if (!preg_match('/^'.self::TOKEN_REGEX.'$/D', $value)) { // TODO: text, or something else?? // ... and it's not ascii if (!preg_match('/^[\x00-\x08\x0B\x0C\x0E-\x7F]*$/D', $value)) { $encoded = true; // Allow space for the indices, charset and language $maxValueLength = $this->getMaxLineLength() - \strlen($name.'*N*="";') - 1; $firstLineOffset = \strlen($this->getCharset()."'".$this->getLanguage()."'"); } if (\in_array($name, ['name', 'filename'], true) && 'form-data' === $this->getValue() && 'content-disposition' === strtolower($this->getName()) && preg_match('//u', $value)) { // WHATWG HTML living standard 4.10.21.8 2 specifies: // For field names and filenames for file fields, the result of the // encoding in the previous bullet point must be escaped by replacing // any 0x0A (LF) bytes with the byte sequence `%0A`, 0x0D (CR) with `%0D` // and 0x22 (") with `%22`. // The user agent must not perform any other escapes. $value = str_replace(['"', "\r", "\n"], ['%22', '%0D', '%0A'], $value); if (\strlen($value) <= $maxValueLength) { return $name.'="'.$value.'"'; } $value = $origValue; } } // Encode if we need to if ($encoded || \strlen($value) > $maxValueLength) { if (null !== $this->encoder) { $value = $this->encoder->encodeString($origValue, $this->getCharset(), $firstLineOffset, $maxValueLength); } else { // We have to go against RFC 2183/2231 in some areas for interoperability $value = $this->getTokenAsEncodedWord($origValue); $encoded = false; } } $valueLines = $this->encoder ? explode("\r\n", $value) : [$value]; // Need to add indices if (\count($valueLines) > 1) { $paramLines = []; foreach ($valueLines as $i => $line) { $paramLines[] = $name.'*'.$i.$this->getEndOfParameterValue($line, true, 0 === $i); } return implode(";\r\n ", $paramLines); } else { return $name.$this->getEndOfParameterValue($valueLines[0], $encoded, true); } } /** * Returns the parameter value from the "=" and beyond. * * @param string $value to append */ private function getEndOfParameterValue(string $value, bool $encoded = false, bool $firstLine = false): string { $forceHttpQuoting = 'form-data' === $this->getValue() && 'content-disposition' === strtolower($this->getName()); if ($forceHttpQuoting || !preg_match('/^'.self::TOKEN_REGEX.'$/D', $value)) { $value = '"'.$value.'"'; } $prepend = '='; if ($encoded) { $prepend = '*='; if ($firstLine) { $prepend = '*='.$this->getCharset()."'".$this->getLanguage()."'"; } } return $prepend.$value; } }