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Edit File : MessageTrait.php \| Size : 7.70 KB
<?php namespace GuzzleHttp\Psr7; use Psr\Http\Message\StreamInterface; /** * Trait implementing functionality common to requests and responses. / trait MessageTrait { /* @var array Map of all registered headers, as original name => array of values / private $headers = []; /* @var array Map of lowercase header name => original name at registration / private $headerNames = []; /* @var string / private $protocol = '1.1'; /* @var StreamInterface\|null / private $stream; public function getProtocolVersion() { return $this->protocol; } public function withProtocolVersion($version) { if ($this->protocol === $version) { return $this; } $new = clone $this; $new->protocol = $version; return $new; } public function getHeaders() { return $this->headers; } public function hasHeader($header) { return isset($this->headerNames[strtolower($header)]); } public function getHeader($header) { $header = strtolower($header); if (!isset($this->headerNames[$header])) { return []; } $header = $this->headerNames[$header]; return $this->headers[$header]; } public function getHeaderLine($header) { return implode(', ', $this->getHeader($header)); } public function withHeader($header, $value) { $this->assertHeader($header); $value = $this->normalizeHeaderValue($value); $normalized = strtolower($header); $new = clone $this; if (isset($new->headerNames[$normalized])) { unset($new->headers[$new->headerNames[$normalized]]); } $new->headerNames[$normalized] = $header; $new->headers[$header] = $value; return $new; } public function withAddedHeader($header, $value) { $this->assertHeader($header); $value = $this->normalizeHeaderValue($value); $normalized = strtolower($header); $new = clone $this; if (isset($new->headerNames[$normalized])) { $header = $this->headerNames[$normalized]; $new->headers[$header] = array_merge($this->headers[$header], $value); } else { $new->headerNames[$normalized] = $header; $new->headers[$header] = $value; } return $new; } public function withoutHeader($header) { $normalized = strtolower($header); if (!isset($this->headerNames[$normalized])) { return $this; } $header = $this->headerNames[$normalized]; $new = clone $this; unset($new->headers[$header], $new->headerNames[$normalized]); return $new; } public function getBody() { if (!$this->stream) { $this->stream = Utils::streamFor(''); } return $this->stream; } public function withBody(StreamInterface $body) { if ($body === $this->stream) { return $this; } $new = clone $this; $new->stream = $body; return $new; } private function setHeaders(array $headers) { $this->headerNames = $this->headers = []; foreach ($headers as $header => $value) { if (is_int($header)) { // Numeric array keys are converted to int by PHP but having a header name '123' is not forbidden by the spec // and also allowed in withHeader(). So we need to cast it to string again for the following assertion to pass. $header = (string) $header; } $this->assertHeader($header); $value = $this->normalizeHeaderValue($value); $normalized = strtolower($header); if (isset($this->headerNames[$normalized])) { $header = $this->headerNames[$normalized]; $this->headers[$header] = array_merge($this->headers[$header], $value); } else { $this->headerNames[$normalized] = $header; $this->headers[$header] = $value; } } } /* * @param mixed $value * * @return string[] / private function normalizeHeaderValue($value) { if (!is_array($value)) { return $this->trimAndValidateHeaderValues([$value]); } if (count($value) === 0) { throw new \InvalidArgumentException('Header value can not be an empty array.'); } return $this->trimAndValidateHeaderValues($value); } /* * Trims whitespace from the header values. * * Spaces and tabs ought to be excluded by parsers when extracting the field value from a header field. * * header-field = field-name ":" OWS field-value OWS * OWS = ( SP / HTAB ) * @param mixed[] $values Header values * * @return string[] Trimmed header values * * @see https://tools.ietf.org/html/rfc7230#section-3.2.4 / private function trimAndValidateHeaderValues(array $values) { return array_map(function ($value) { if (!is_scalar($value) && null !== $value) { throw new \InvalidArgumentException(sprintf( 'Header value must be scalar or null but %s provided.', is_object($value) ? get_class($value) : gettype($value) )); } $trimmed = trim((string) $value, " \t"); $this->assertValue($trimmed); return $trimmed; }, array_values($values)); } /* * @see https://tools.ietf.org/html/rfc7230#section-3.2 * * @param mixed $header * * @return void / private function assertHeader($header) { if (!is_string($header)) { throw new \InvalidArgumentException(sprintf( 'Header name must be a string but %s provided.', is_object($header) ? get_class($header) : gettype($header) )); } if ($header === '') { throw new \InvalidArgumentException('Header name can not be empty.'); } if (! preg_match('/^[a-zA-Z0-9\'`#$%&+.^_\|~!-]+$/', $header)) { throw new \InvalidArgumentException( sprintf( '"%s" is not valid header name', $header ) ); } } /** * @param string $value * * @return void * * @see https://tools.ietf.org/html/rfc7230#section-3.2 * * field-value = ( field-content / obs-fold ) field-content = field-vchar [ 1( SP / HTAB ) field-vchar ] field-vchar = VCHAR / obs-text * VCHAR = %x21-7E * obs-text = %x80-FF * obs-fold = CRLF 1( SP / HTAB ) / private function assertValue($value) { // The regular expression intentionally does not support the obs-fold production, because as // per RFC 7230#3.2.4: // // A sender MUST NOT generate a message that includes // line folding (i.e., that has any field-value that contains a match to // the obs-fold rule) unless the message is intended for packaging // within the message/http media type. // // Clients must not send a request with line folding and a server sending folded headers is // likely very rare. Line folding is a fairly obscure feature of HTTP/1.1 and thus not accepting // folding is not likely to break any legitimate use case. if (! preg_match('/^[\x20\x09\x21-\x7E\x80-\xFF]*$/', $value)) { throw new \InvalidArgumentException(sprintf('"%s" is not valid header value', $value)); } } } Back

Edit File : MessageTrait.php | Size : 7.70 KB

<?php

namespace GuzzleHttp\Psr7;

use Psr\Http\Message\StreamInterface;

/**
 * Trait implementing functionality common to requests and responses.
 */
trait MessageTrait
{
    /** @var array Map of all registered headers, as original name => array of values */
    private $headers = [];

/** @var array Map of lowercase header name => original name at registration */
    private $headerNames  = [];

/** @var string */
    private $protocol = '1.1';

/** @var StreamInterface|null */
    private $stream;

public function getProtocolVersion()
    {
        return $this->protocol;
    }

public function withProtocolVersion($version)
    {
        if ($this->protocol === $version) {
            return $this;
        }

$new = clone $this;
        $new->protocol = $version;
        return $new;
    }

public function getHeaders()
    {
        return $this->headers;
    }

public function hasHeader($header)
    {
        return isset($this->headerNames[strtolower($header)]);
    }

public function getHeader($header)
    {
        $header = strtolower($header);

if (!isset($this->headerNames[$header])) {
            return [];
        }

$header = $this->headerNames[$header];

return $this->headers[$header];
    }

public function getHeaderLine($header)
    {
        return implode(', ', $this->getHeader($header));
    }

public function withHeader($header, $value)
    {
        $this->assertHeader($header);
        $value = $this->normalizeHeaderValue($value);
        $normalized = strtolower($header);

$new = clone $this;
        if (isset($new->headerNames[$normalized])) {
            unset($new->headers[$new->headerNames[$normalized]]);
        }
        $new->headerNames[$normalized] = $header;
        $new->headers[$header] = $value;

return $new;
    }

public function withAddedHeader($header, $value)
    {
        $this->assertHeader($header);
        $value = $this->normalizeHeaderValue($value);
        $normalized = strtolower($header);

$new = clone $this;
        if (isset($new->headerNames[$normalized])) {
            $header = $this->headerNames[$normalized];
            $new->headers[$header] = array_merge($this->headers[$header], $value);
        } else {
            $new->headerNames[$normalized] = $header;
            $new->headers[$header] = $value;
        }

return $new;
    }

public function withoutHeader($header)
    {
        $normalized = strtolower($header);

if (!isset($this->headerNames[$normalized])) {
            return $this;
        }

$header = $this->headerNames[$normalized];

$new = clone $this;
        unset($new->headers[$header], $new->headerNames[$normalized]);

return $new;
    }

public function getBody()
    {
        if (!$this->stream) {
            $this->stream = Utils::streamFor('');
        }

return $this->stream;
    }

public function withBody(StreamInterface $body)
    {
        if ($body === $this->stream) {
            return $this;
        }

$new = clone $this;
        $new->stream = $body;
        return $new;
    }

private function setHeaders(array $headers)
    {
        $this->headerNames = $this->headers = [];
        foreach ($headers as $header => $value) {
            if (is_int($header)) {
                // Numeric array keys are converted to int by PHP but having a header name '123' is not forbidden by the spec
                // and also allowed in withHeader(). So we need to cast it to string again for the following assertion to pass.
                $header = (string) $header;
            }
            $this->assertHeader($header);
            $value = $this->normalizeHeaderValue($value);
            $normalized = strtolower($header);
            if (isset($this->headerNames[$normalized])) {
                $header = $this->headerNames[$normalized];
                $this->headers[$header] = array_merge($this->headers[$header], $value);
            } else {
                $this->headerNames[$normalized] = $header;
                $this->headers[$header] = $value;
            }
        }
    }

/**
     * @param mixed $value
     *
     * @return string[]
     */
    private function normalizeHeaderValue($value)
    {
        if (!is_array($value)) {
            return $this->trimAndValidateHeaderValues([$value]);
        }

if (count($value) === 0) {
            throw new \InvalidArgumentException('Header value can not be an empty array.');
        }

return $this->trimAndValidateHeaderValues($value);
    }

/**
     * Trims whitespace from the header values.
     *
     * Spaces and tabs ought to be excluded by parsers when extracting the field value from a header field.
     *
     * header-field = field-name ":" OWS field-value OWS
     * OWS          = *( SP / HTAB )
     *
     * @param mixed[] $values Header values
     *
     * @return string[] Trimmed header values
     *
     * @see https://tools.ietf.org/html/rfc7230#section-3.2.4
     */
    private function trimAndValidateHeaderValues(array $values)
    {
        return array_map(function ($value) {
            if (!is_scalar($value) && null !== $value) {
                throw new \InvalidArgumentException(sprintf(
                    'Header value must be scalar or null but %s provided.',
                    is_object($value) ? get_class($value) : gettype($value)
                ));
            }

$trimmed = trim((string) $value, " \t");
            $this->assertValue($trimmed);

return $trimmed;
        }, array_values($values));
    }

/**
     * @see https://tools.ietf.org/html/rfc7230#section-3.2
     *
     * @param mixed $header
     *
     * @return void
     */
    private function assertHeader($header)
    {
        if (!is_string($header)) {
            throw new \InvalidArgumentException(sprintf(
                'Header name must be a string but %s provided.',
                is_object($header) ? get_class($header) : gettype($header)
            ));
        }

if ($header === '') {
            throw new \InvalidArgumentException('Header name can not be empty.');
        }

if (! preg_match('/^[a-zA-Z0-9\'`#$%&*+.^_|~!-]+$/', $header)) {
            throw new \InvalidArgumentException(
                sprintf(
                    '"%s" is not valid header name',
                    $header
                )
            );
        }
    }

/**
     * @param string $value
     *
     * @return void
     *
     * @see https://tools.ietf.org/html/rfc7230#section-3.2
     *
     * field-value    = *( field-content / obs-fold )
     * field-content  = field-vchar [ 1*( SP / HTAB ) field-vchar ]
     * field-vchar    = VCHAR / obs-text
     * VCHAR          = %x21-7E
     * obs-text       = %x80-FF
     * obs-fold       = CRLF 1*( SP / HTAB )
     */
    private function assertValue($value)
    {
        // The regular expression intentionally does not support the obs-fold production, because as
        // per RFC 7230#3.2.4:
        //
        // A sender MUST NOT generate a message that includes
        // line folding (i.e., that has any field-value that contains a match to
        // the obs-fold rule) unless the message is intended for packaging
        // within the message/http media type.
        //
        // Clients must not send a request with line folding and a server sending folded headers is
        // likely very rare. Line folding is a fairly obscure feature of HTTP/1.1 and thus not accepting
        // folding is not likely to break any legitimate use case.
        if (! preg_match('/^[\x20\x09\x21-\x7E\x80-\xFF]*$/', $value)) {
            throw new \InvalidArgumentException(sprintf('"%s" is not valid header value', $value));
        }
    }
}

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