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gl-website-deployer/vendor/symfony/http-client/HttpClientTrait.php

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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\HttpClient;
use Symfony\Component\HttpClient\Exception\InvalidArgumentException;
use Symfony\Component\HttpClient\Exception\TransportException;
/**
* Provides the common logic from writing HttpClientInterface implementations.
*
* All private methods are static to prevent implementers from creating memory leaks via circular references.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
trait HttpClientTrait
{
private static $CHUNK_SIZE = 16372;
/**
* {@inheritdoc}
*/
public function withOptions(array $options): self
{
$clone = clone $this;
$clone->defaultOptions = self::mergeDefaultOptions($options, $this->defaultOptions);
return $clone;
}
/**
* Validates and normalizes method, URL and options, and merges them with defaults.
*
* @throws InvalidArgumentException When a not-supported option is found
*/
private static function prepareRequest(?string $method, ?string $url, array $options, array $defaultOptions = [], bool $allowExtraOptions = false): array
{
if (null !== $method) {
if (\strlen($method) !== strspn($method, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ')) {
throw new InvalidArgumentException(sprintf('Invalid HTTP method "%s", only uppercase letters are accepted.', $method));
}
if (!$method) {
throw new InvalidArgumentException('The HTTP method cannot be empty.');
}
}
$options = self::mergeDefaultOptions($options, $defaultOptions, $allowExtraOptions);
$buffer = $options['buffer'] ?? true;
if ($buffer instanceof \Closure) {
$options['buffer'] = static function (array $headers) use ($buffer) {
if (!\is_bool($buffer = $buffer($headers))) {
if (!\is_array($bufferInfo = @stream_get_meta_data($buffer))) {
throw new \LogicException(sprintf('The closure passed as option "buffer" must return bool or stream resource, got "%s".', get_debug_type($buffer)));
}
if (false === strpbrk($bufferInfo['mode'], 'acew+')) {
throw new \LogicException(sprintf('The stream returned by the closure passed as option "buffer" must be writeable, got mode "%s".', $bufferInfo['mode']));
}
}
return $buffer;
};
} elseif (!\is_bool($buffer)) {
if (!\is_array($bufferInfo = @stream_get_meta_data($buffer))) {
throw new InvalidArgumentException(sprintf('Option "buffer" must be bool, stream resource or Closure, "%s" given.', get_debug_type($buffer)));
}
if (false === strpbrk($bufferInfo['mode'], 'acew+')) {
throw new InvalidArgumentException(sprintf('The stream in option "buffer" must be writeable, mode "%s" given.', $bufferInfo['mode']));
}
}
if (isset($options['json'])) {
if (isset($options['body']) && '' !== $options['body']) {
throw new InvalidArgumentException('Define either the "json" or the "body" option, setting both is not supported.');
}
$options['body'] = self::jsonEncode($options['json']);
unset($options['json']);
if (!isset($options['normalized_headers']['content-type'])) {
$options['normalized_headers']['content-type'] = ['Content-Type: application/json'];
}
}
if (!isset($options['normalized_headers']['accept'])) {
$options['normalized_headers']['accept'] = ['Accept: */*'];
}
if (isset($options['body'])) {
$options['body'] = self::normalizeBody($options['body']);
if (\is_string($options['body'])
&& (string) \strlen($options['body']) !== substr($h = $options['normalized_headers']['content-length'][0] ?? '', 16)
&& ('' !== $h || '' !== $options['body'])
) {
if ('chunked' === substr($options['normalized_headers']['transfer-encoding'][0] ?? '', \strlen('Transfer-Encoding: '))) {
unset($options['normalized_headers']['transfer-encoding']);
$options['body'] = self::dechunk($options['body']);
}
$options['normalized_headers']['content-length'] = [substr_replace($h ?: 'Content-Length: ', \strlen($options['body']), 16)];
}
}
if (isset($options['peer_fingerprint'])) {
$options['peer_fingerprint'] = self::normalizePeerFingerprint($options['peer_fingerprint']);
}
// Validate on_progress
if (isset($options['on_progress']) && !\is_callable($onProgress = $options['on_progress'])) {
throw new InvalidArgumentException(sprintf('Option "on_progress" must be callable, "%s" given.', get_debug_type($onProgress)));
}
if (\is_array($options['auth_basic'] ?? null)) {
$count = \count($options['auth_basic']);
if ($count <= 0 || $count > 2) {
throw new InvalidArgumentException(sprintf('Option "auth_basic" must contain 1 or 2 elements, "%s" given.', $count));
}
$options['auth_basic'] = implode(':', $options['auth_basic']);
}
if (!\is_string($options['auth_basic'] ?? '')) {
throw new InvalidArgumentException(sprintf('Option "auth_basic" must be string or an array, "%s" given.', get_debug_type($options['auth_basic'])));
}
if (isset($options['auth_bearer'])) {
if (!\is_string($options['auth_bearer'])) {
throw new InvalidArgumentException(sprintf('Option "auth_bearer" must be a string, "%s" given.', get_debug_type($options['auth_bearer'])));
}
if (preg_match('{[^\x21-\x7E]}', $options['auth_bearer'])) {
throw new InvalidArgumentException('Invalid character found in option "auth_bearer": '.json_encode($options['auth_bearer']).'.');
}
}
if (isset($options['auth_basic'], $options['auth_bearer'])) {
throw new InvalidArgumentException('Define either the "auth_basic" or the "auth_bearer" option, setting both is not supported.');
}
if (null !== $url) {
// Merge auth with headers
if (($options['auth_basic'] ?? false) && !($options['normalized_headers']['authorization'] ?? false)) {
$options['normalized_headers']['authorization'] = ['Authorization: Basic '.base64_encode($options['auth_basic'])];
}
// Merge bearer with headers
if (($options['auth_bearer'] ?? false) && !($options['normalized_headers']['authorization'] ?? false)) {
$options['normalized_headers']['authorization'] = ['Authorization: Bearer '.$options['auth_bearer']];
}
unset($options['auth_basic'], $options['auth_bearer']);
// Parse base URI
if (\is_string($options['base_uri'])) {
$options['base_uri'] = self::parseUrl($options['base_uri']);
}
// Validate and resolve URL
$url = self::parseUrl($url, $options['query']);
$url = self::resolveUrl($url, $options['base_uri'], $defaultOptions['query'] ?? []);
}
// Finalize normalization of options
$options['http_version'] = (string) ($options['http_version'] ?? '') ?: null;
if (0 > $options['timeout'] = (float) ($options['timeout'] ?? \ini_get('default_socket_timeout'))) {
$options['timeout'] = 172800.0; // 2 days
}
$options['max_duration'] = isset($options['max_duration']) ? (float) $options['max_duration'] : 0;
$options['headers'] = array_merge(...array_values($options['normalized_headers']));
return [$url, $options];
}
/**
* @throws InvalidArgumentException When an invalid option is found
*/
private static function mergeDefaultOptions(array $options, array $defaultOptions, bool $allowExtraOptions = false): array
{
$options['normalized_headers'] = self::normalizeHeaders($options['headers'] ?? []);
if ($defaultOptions['headers'] ?? false) {
$options['normalized_headers'] += self::normalizeHeaders($defaultOptions['headers']);
}
$options['headers'] = array_merge(...array_values($options['normalized_headers']) ?: [[]]);
if ($resolve = $options['resolve'] ?? false) {
$options['resolve'] = [];
foreach ($resolve as $k => $v) {
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if ('' === $v = (string) $v) {
$v = null;
} elseif ('[' === $v[0] && ']' === substr($v, -1) && str_contains($v, ':')) {
$v = substr($v, 1, -1);
}
$options['resolve'][substr(self::parseUrl('http://'.$k)['authority'], 2)] = $v;
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}
}
// Option "query" is never inherited from defaults
$options['query'] = $options['query'] ?? [];
$options += $defaultOptions;
if (isset(self::$emptyDefaults)) {
foreach (self::$emptyDefaults as $k => $v) {
if (!isset($options[$k])) {
$options[$k] = $v;
}
}
}
if (isset($defaultOptions['extra'])) {
$options['extra'] += $defaultOptions['extra'];
}
if ($resolve = $defaultOptions['resolve'] ?? false) {
foreach ($resolve as $k => $v) {
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if ('' === $v = (string) $v) {
$v = null;
} elseif ('[' === $v[0] && ']' === substr($v, -1) && str_contains($v, ':')) {
$v = substr($v, 1, -1);
}
$options['resolve'] += [substr(self::parseUrl('http://'.$k)['authority'], 2) => $v];
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}
}
if ($allowExtraOptions || !$defaultOptions) {
return $options;
}
// Look for unsupported options
foreach ($options as $name => $v) {
if (\array_key_exists($name, $defaultOptions) || 'normalized_headers' === $name) {
continue;
}
if ('auth_ntlm' === $name) {
if (!\extension_loaded('curl')) {
$msg = 'try installing the "curl" extension to use "%s" instead.';
} else {
$msg = 'try using "%s" instead.';
}
throw new InvalidArgumentException(sprintf('Option "auth_ntlm" is not supported by "%s", '.$msg, __CLASS__, CurlHttpClient::class));
}
$alternatives = [];
foreach ($defaultOptions as $k => $v) {
if (levenshtein($name, $k) <= \strlen($name) / 3 || str_contains($k, $name)) {
$alternatives[] = $k;
}
}
throw new InvalidArgumentException(sprintf('Unsupported option "%s" passed to "%s", did you mean "%s"?', $name, __CLASS__, implode('", "', $alternatives ?: array_keys($defaultOptions))));
}
return $options;
}
/**
* @return string[][]
*
* @throws InvalidArgumentException When an invalid header is found
*/
private static function normalizeHeaders(array $headers): array
{
$normalizedHeaders = [];
foreach ($headers as $name => $values) {
if (\is_object($values) && method_exists($values, '__toString')) {
$values = (string) $values;
}
if (\is_int($name)) {
if (!\is_string($values)) {
throw new InvalidArgumentException(sprintf('Invalid value for header "%s": expected string, "%s" given.', $name, get_debug_type($values)));
}
[$name, $values] = explode(':', $values, 2);
$values = [ltrim($values)];
} elseif (!is_iterable($values)) {
if (\is_object($values)) {
throw new InvalidArgumentException(sprintf('Invalid value for header "%s": expected string, "%s" given.', $name, get_debug_type($values)));
}
$values = (array) $values;
}
$lcName = strtolower($name);
$normalizedHeaders[$lcName] = [];
foreach ($values as $value) {
$normalizedHeaders[$lcName][] = $value = $name.': '.$value;
if (\strlen($value) !== strcspn($value, "\r\n\0")) {
throw new InvalidArgumentException(sprintf('Invalid header: CR/LF/NUL found in "%s".', $value));
}
}
}
return $normalizedHeaders;
}
/**
* @param array|string|resource|\Traversable|\Closure $body
*
* @return string|resource|\Closure
*
* @throws InvalidArgumentException When an invalid body is passed
*/
private static function normalizeBody($body)
{
if (\is_array($body)) {
array_walk_recursive($body, $caster = static function (&$v) use (&$caster) {
if (\is_object($v)) {
if ($vars = get_object_vars($v)) {
array_walk_recursive($vars, $caster);
$v = $vars;
} elseif (method_exists($v, '__toString')) {
$v = (string) $v;
}
}
});
return http_build_query($body, '', '&');
}
if (\is_string($body)) {
return $body;
}
$generatorToCallable = static function (\Generator $body): \Closure {
return static function () use ($body) {
while ($body->valid()) {
$chunk = $body->current();
$body->next();
if ('' !== $chunk) {
return $chunk;
}
}
return '';
};
};
if ($body instanceof \Generator) {
return $generatorToCallable($body);
}
if ($body instanceof \Traversable) {
return $generatorToCallable((static function ($body) { yield from $body; })($body));
}
if ($body instanceof \Closure) {
$r = new \ReflectionFunction($body);
$body = $r->getClosure();
if ($r->isGenerator()) {
$body = $body(self::$CHUNK_SIZE);
return $generatorToCallable($body);
}
return $body;
}
if (!\is_array(@stream_get_meta_data($body))) {
throw new InvalidArgumentException(sprintf('Option "body" must be string, stream resource, iterable or callable, "%s" given.', get_debug_type($body)));
}
return $body;
}
private static function dechunk(string $body): string
{
$h = fopen('php://temp', 'w+');
stream_filter_append($h, 'dechunk', \STREAM_FILTER_WRITE);
fwrite($h, $body);
$body = stream_get_contents($h, -1, 0);
rewind($h);
ftruncate($h, 0);
if (fwrite($h, '-') && '' !== stream_get_contents($h, -1, 0)) {
throw new TransportException('Request body has broken chunked encoding.');
}
return $body;
}
/**
* @param string|string[] $fingerprint
*
* @throws InvalidArgumentException When an invalid fingerprint is passed
*/
private static function normalizePeerFingerprint($fingerprint): array
{
if (\is_string($fingerprint)) {
switch (\strlen($fingerprint = str_replace(':', '', $fingerprint))) {
case 32: $fingerprint = ['md5' => $fingerprint]; break;
case 40: $fingerprint = ['sha1' => $fingerprint]; break;
case 44: $fingerprint = ['pin-sha256' => [$fingerprint]]; break;
case 64: $fingerprint = ['sha256' => $fingerprint]; break;
default: throw new InvalidArgumentException(sprintf('Cannot auto-detect fingerprint algorithm for "%s".', $fingerprint));
}
} elseif (\is_array($fingerprint)) {
foreach ($fingerprint as $algo => $hash) {
$fingerprint[$algo] = 'pin-sha256' === $algo ? (array) $hash : str_replace(':', '', $hash);
}
} else {
throw new InvalidArgumentException(sprintf('Option "peer_fingerprint" must be string or array, "%s" given.', get_debug_type($fingerprint)));
}
return $fingerprint;
}
/**
* @param mixed $value
*
* @throws InvalidArgumentException When the value cannot be json-encoded
*/
private static function jsonEncode($value, ?int $flags = null, int $maxDepth = 512): string
{
$flags = $flags ?? (\JSON_HEX_TAG | \JSON_HEX_APOS | \JSON_HEX_AMP | \JSON_HEX_QUOT | \JSON_PRESERVE_ZERO_FRACTION);
try {
$value = json_encode($value, $flags | (\PHP_VERSION_ID >= 70300 ? \JSON_THROW_ON_ERROR : 0), $maxDepth);
} catch (\JsonException $e) {
throw new InvalidArgumentException('Invalid value for "json" option: '.$e->getMessage());
}
if (\PHP_VERSION_ID < 70300 && \JSON_ERROR_NONE !== json_last_error() && (false === $value || !($flags & \JSON_PARTIAL_OUTPUT_ON_ERROR))) {
throw new InvalidArgumentException('Invalid value for "json" option: '.json_last_error_msg());
}
return $value;
}
/**
* Resolves a URL against a base URI.
*
* @see https://tools.ietf.org/html/rfc3986#section-5.2.2
*
* @throws InvalidArgumentException When an invalid URL is passed
*/
private static function resolveUrl(array $url, ?array $base, array $queryDefaults = []): array
{
$givenUrl = $url;
if (null !== $base && '' === ($base['scheme'] ?? '').($base['authority'] ?? '')) {
throw new InvalidArgumentException(sprintf('Invalid "base_uri" option: host or scheme is missing in "%s".', implode('', $base)));
}
if (null === $url['scheme'] && (null === $base || null === $base['scheme'])) {
throw new InvalidArgumentException(sprintf('Invalid URL: scheme is missing in "%s". Did you forget to add "http(s)://"?', implode('', $base ?? $url)));
}
if (null === $base && '' === $url['scheme'].$url['authority']) {
throw new InvalidArgumentException(sprintf('Invalid URL: no "base_uri" option was provided and host or scheme is missing in "%s".', implode('', $url)));
}
if (null !== $url['scheme']) {
$url['path'] = self::removeDotSegments($url['path'] ?? '');
} else {
if (null !== $url['authority']) {
$url['path'] = self::removeDotSegments($url['path'] ?? '');
} else {
if (null === $url['path']) {
$url['path'] = $base['path'];
$url['query'] = $url['query'] ?? $base['query'];
} else {
if ('/' !== $url['path'][0]) {
if (null === $base['path']) {
$url['path'] = '/'.$url['path'];
} else {
$segments = explode('/', $base['path']);
array_splice($segments, -1, 1, [$url['path']]);
$url['path'] = implode('/', $segments);
}
}
$url['path'] = self::removeDotSegments($url['path']);
}
$url['authority'] = $base['authority'];
if ($queryDefaults) {
$url['query'] = '?'.self::mergeQueryString(substr($url['query'] ?? '', 1), $queryDefaults, false);
}
}
$url['scheme'] = $base['scheme'];
}
if ('' === ($url['path'] ?? '')) {
$url['path'] = '/';
}
if ('?' === ($url['query'] ?? '')) {
$url['query'] = null;
}
if (null !== $url['scheme'] && null === $url['authority']) {
throw new InvalidArgumentException(\sprintf('Invalid URL: host is missing in "%s".', implode('', $givenUrl)));
}
return $url;
}
/**
* Parses a URL and fixes its encoding if needed.
*
* @throws InvalidArgumentException When an invalid URL is passed
*/
private static function parseUrl(string $url, array $query = [], array $allowedSchemes = ['http' => 80, 'https' => 443]): array
{
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$tail = '';
if (false === $parts = parse_url(\strlen($url) !== strcspn($url, '?#') ? $url : $url.$tail = '#')) {
throw new InvalidArgumentException(sprintf('Malformed URL "%s".', $url));
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}
if ($query) {
$parts['query'] = self::mergeQueryString($parts['query'] ?? null, $query, true);
}
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$scheme = $parts['scheme'] ?? null;
$host = $parts['host'] ?? null;
if (!$scheme && $host && !str_starts_with($url, '//')) {
$parts = parse_url(':/'.$url.$tail);
$parts['path'] = substr($parts['path'], 2);
$scheme = $host = null;
}
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$port = $parts['port'] ?? 0;
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if (null !== $scheme) {
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if (!isset($allowedSchemes[$scheme = strtolower($scheme)])) {
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throw new InvalidArgumentException(sprintf('Unsupported scheme in "%s": "%s" expected.', $url, implode('" or "', array_keys($allowedSchemes))));
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}
$port = $allowedSchemes[$scheme] === $port ? 0 : $port;
$scheme .= ':';
}
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if (null !== $host) {
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if (!\defined('INTL_IDNA_VARIANT_UTS46') && preg_match('/[\x80-\xFF]/', $host)) {
throw new InvalidArgumentException(sprintf('Unsupported IDN "%s", try enabling the "intl" PHP extension or running "composer require symfony/polyfill-intl-idn".', $host));
}
$host = \defined('INTL_IDNA_VARIANT_UTS46') ? idn_to_ascii($host, \IDNA_DEFAULT | \IDNA_USE_STD3_RULES | \IDNA_CHECK_BIDI | \IDNA_CHECK_CONTEXTJ | \IDNA_NONTRANSITIONAL_TO_ASCII, \INTL_IDNA_VARIANT_UTS46) ?: strtolower($host) : strtolower($host);
$host .= $port ? ':'.$port : '';
}
foreach (['user', 'pass', 'path', 'query', 'fragment'] as $part) {
if (!isset($parts[$part])) {
continue;
}
if (str_contains($parts[$part], '%')) {
// https://tools.ietf.org/html/rfc3986#section-2.3
$parts[$part] = preg_replace_callback('/%(?:2[DE]|3[0-9]|[46][1-9A-F]|5F|[57][0-9A]|7E)++/i', function ($m) { return rawurldecode($m[0]); }, $parts[$part]);
}
// https://tools.ietf.org/html/rfc3986#section-3.3
$parts[$part] = preg_replace_callback("#[^-A-Za-z0-9._~!$&/'()[\]*+,;=:@{}%]++#", function ($m) { return rawurlencode($m[0]); }, $parts[$part]);
}
return [
'scheme' => $scheme,
'authority' => null !== $host ? '//'.(isset($parts['user']) ? $parts['user'].(isset($parts['pass']) ? ':'.$parts['pass'] : '').'@' : '').$host : null,
'path' => isset($parts['path'][0]) ? $parts['path'] : null,
'query' => isset($parts['query']) ? '?'.$parts['query'] : null,
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'fragment' => isset($parts['fragment']) && !$tail ? '#'.$parts['fragment'] : null,
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];
}
/**
* Removes dot-segments from a path.
*
* @see https://tools.ietf.org/html/rfc3986#section-5.2.4
*/
private static function removeDotSegments(string $path)
{
$result = '';
while (!\in_array($path, ['', '.', '..'], true)) {
if ('.' === $path[0] && (str_starts_with($path, $p = '../') || str_starts_with($path, $p = './'))) {
$path = substr($path, \strlen($p));
} elseif ('/.' === $path || str_starts_with($path, '/./')) {
$path = substr_replace($path, '/', 0, 3);
} elseif ('/..' === $path || str_starts_with($path, '/../')) {
$i = strrpos($result, '/');
$result = $i ? substr($result, 0, $i) : '';
$path = substr_replace($path, '/', 0, 4);
} else {
$i = strpos($path, '/', 1) ?: \strlen($path);
$result .= substr($path, 0, $i);
$path = substr($path, $i);
}
}
return $result;
}
/**
* Merges and encodes a query array with a query string.
*
* @throws InvalidArgumentException When an invalid query-string value is passed
*/
private static function mergeQueryString(?string $queryString, array $queryArray, bool $replace): ?string
{
if (!$queryArray) {
return $queryString;
}
$query = [];
if (null !== $queryString) {
foreach (explode('&', $queryString) as $v) {
if ('' !== $v) {
$k = urldecode(explode('=', $v, 2)[0]);
$query[$k] = (isset($query[$k]) ? $query[$k].'&' : '').$v;
}
}
}
if ($replace) {
foreach ($queryArray as $k => $v) {
if (null === $v) {
unset($query[$k]);
}
}
}
$queryString = http_build_query($queryArray, '', '&', \PHP_QUERY_RFC3986);
$queryArray = [];
if ($queryString) {
if (str_contains($queryString, '%')) {
// https://tools.ietf.org/html/rfc3986#section-2.3 + some chars not encoded by browsers
$queryString = strtr($queryString, [
'%21' => '!',
'%24' => '$',
'%28' => '(',
'%29' => ')',
'%2A' => '*',
'%2F' => '/',
'%3A' => ':',
'%3B' => ';',
'%40' => '@',
'%5B' => '[',
'%5D' => ']',
]);
}
foreach (explode('&', $queryString) as $v) {
$queryArray[rawurldecode(explode('=', $v, 2)[0])] = $v;
}
}
return implode('&', $replace ? array_replace($query, $queryArray) : ($query + $queryArray));
}
/**
* Loads proxy configuration from the same environment variables as curl when no proxy is explicitly set.
*/
private static function getProxy(?string $proxy, array $url, ?string $noProxy): ?array
{
if (null === $proxy = self::getProxyUrl($proxy, $url)) {
return null;
}
$proxy = (parse_url($proxy) ?: []) + ['scheme' => 'http'];
if (!isset($proxy['host'])) {
throw new TransportException('Invalid HTTP proxy: host is missing.');
}
if ('http' === $proxy['scheme']) {
$proxyUrl = 'tcp://'.$proxy['host'].':'.($proxy['port'] ?? '80');
} elseif ('https' === $proxy['scheme']) {
$proxyUrl = 'ssl://'.$proxy['host'].':'.($proxy['port'] ?? '443');
} else {
throw new TransportException(sprintf('Unsupported proxy scheme "%s": "http" or "https" expected.', $proxy['scheme']));
}
$noProxy = $noProxy ?? $_SERVER['no_proxy'] ?? $_SERVER['NO_PROXY'] ?? '';
$noProxy = $noProxy ? preg_split('/[\s,]+/', $noProxy) : [];
return [
'url' => $proxyUrl,
'auth' => isset($proxy['user']) ? 'Basic '.base64_encode(rawurldecode($proxy['user']).':'.rawurldecode($proxy['pass'] ?? '')) : null,
'no_proxy' => $noProxy,
];
}
private static function getProxyUrl(?string $proxy, array $url): ?string
{
if (null !== $proxy) {
return $proxy;
}
// Ignore HTTP_PROXY except on the CLI to work around httpoxy set of vulnerabilities
$proxy = $_SERVER['http_proxy'] ?? (\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true) ? $_SERVER['HTTP_PROXY'] ?? null : null) ?? $_SERVER['all_proxy'] ?? $_SERVER['ALL_PROXY'] ?? null;
if ('https:' === $url['scheme']) {
$proxy = $_SERVER['https_proxy'] ?? $_SERVER['HTTPS_PROXY'] ?? $proxy;
}
return $proxy;
}
private static function shouldBuffer(array $headers): bool
{
if (null === $contentType = $headers['content-type'][0] ?? null) {
return false;
}
if (false !== $i = strpos($contentType, ';')) {
$contentType = substr($contentType, 0, $i);
}
return $contentType && preg_match('#^(?:text/|application/(?:.+\+)?(?:json|xml)$)#i', $contentType);
}
}
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