update 1.0.8.0
Commits for version update
This commit is contained in:
Manish Verma
339
vendor/aws/aws-sdk-php/src/Signature/SignatureV4.php
vendored
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339
vendor/aws/aws-sdk-php/src/Signature/SignatureV4.php
vendored
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@@ -0,0 +1,339 @@
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<?php
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namespace Aws\Signature;
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use Aws\Credentials\CredentialsInterface;
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use Aws\Exception\CouldNotCreateChecksumException;
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use GuzzleHttp\Psr7;
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use Psr\Http\Message\RequestInterface;
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/**
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* Signature Version 4
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* @link http://docs.aws.amazon.com/general/latest/gr/signature-version-4.html
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*/
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class SignatureV4 implements SignatureInterface
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{
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use SignatureTrait;
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const ISO8601_BASIC = 'Ymd\THis\Z';
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/** @var string */
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private $service;
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/** @var string */
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private $region;
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/**
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* @param string $service Service name to use when signing
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* @param string $region Region name to use when signing
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*/
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public function __construct($service, $region)
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{
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$this->service = $service;
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$this->region = $region;
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}
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public function signRequest(
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RequestInterface $request,
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CredentialsInterface $credentials
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) {
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$ldt = gmdate(self::ISO8601_BASIC);
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$sdt = substr($ldt, 0, 8);
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$parsed = $this->parseRequest($request);
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$parsed['headers']['X-Amz-Date'] = [$ldt];
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if ($token = $credentials->getSecurityToken()) {
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$parsed['headers']['X-Amz-Security-Token'] = [$token];
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}
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$cs = $this->createScope($sdt, $this->region, $this->service);
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$payload = $this->getPayload($request);
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$context = $this->createContext($parsed, $payload);
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$toSign = $this->createStringToSign($ldt, $cs, $context['creq']);
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$signingKey = $this->getSigningKey(
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$sdt,
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$this->region,
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$this->service,
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$credentials->getSecretKey()
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);
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$signature = hash_hmac('sha256', $toSign, $signingKey);
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$parsed['headers']['Authorization'] = [
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"AWS4-HMAC-SHA256 "
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. "Credential={$credentials->getAccessKeyId()}/{$cs}, "
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. "SignedHeaders={$context['headers']}, Signature={$signature}"
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];
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return $this->buildRequest($parsed);
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}
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public function presign(
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RequestInterface $request,
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CredentialsInterface $credentials,
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$expires
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) {
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$parsed = $this->createPresignedRequest($request, $credentials);
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$payload = $this->getPresignedPayload($request);
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$httpDate = gmdate(self::ISO8601_BASIC, time());
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$shortDate = substr($httpDate, 0, 8);
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$scope = $this->createScope($shortDate, $this->region, $this->service);
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$credential = $credentials->getAccessKeyId() . '/' . $scope;
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$parsed['query']['X-Amz-Algorithm'] = 'AWS4-HMAC-SHA256';
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$parsed['query']['X-Amz-Credential'] = $credential;
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$parsed['query']['X-Amz-Date'] = gmdate('Ymd\THis\Z', time());
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$parsed['query']['X-Amz-SignedHeaders'] = 'host';
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$parsed['query']['X-Amz-Expires'] = $this->convertExpires($expires);
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$context = $this->createContext($parsed, $payload);
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$stringToSign = $this->createStringToSign($httpDate, $scope, $context['creq']);
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$key = $this->getSigningKey(
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$shortDate,
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$this->region,
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$this->service,
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$credentials->getSecretKey()
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);
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$parsed['query']['X-Amz-Signature'] = hash_hmac('sha256', $stringToSign, $key);
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return $this->buildRequest($parsed);
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}
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/**
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* Converts a POST request to a GET request by moving POST fields into the
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* query string.
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*
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* Useful for pre-signing query protocol requests.
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*
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* @param RequestInterface $request Request to clone
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*
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* @return RequestInterface
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* @throws \InvalidArgumentException if the method is not POST
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*/
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public static function convertPostToGet(RequestInterface $request)
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{
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if ($request->getMethod() !== 'POST') {
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throw new \InvalidArgumentException('Expected a POST request but '
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. 'received a ' . $request->getMethod() . ' request.');
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}
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$sr = $request->withMethod('GET')
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->withBody(Psr7\stream_for(''))
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->withoutHeader('Content-Type')
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->withoutHeader('Content-Length');
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// Move POST fields to the query if they are present
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if ($request->getHeaderLine('Content-Type') === 'application/x-www-form-urlencoded') {
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$body = (string) $request->getBody();
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$sr = $sr->withUri($sr->getUri()->withQuery($body));
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}
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return $sr;
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}
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protected function getPayload(RequestInterface $request)
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{
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// Calculate the request signature payload
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if ($request->hasHeader('X-Amz-Content-Sha256')) {
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// Handle streaming operations (e.g. Glacier.UploadArchive)
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return $request->getHeaderLine('X-Amz-Content-Sha256');
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}
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if (!$request->getBody()->isSeekable()) {
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throw new CouldNotCreateChecksumException('sha256');
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}
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try {
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return Psr7\hash($request->getBody(), 'sha256');
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} catch (\Exception $e) {
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throw new CouldNotCreateChecksumException('sha256', $e);
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}
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}
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protected function getPresignedPayload(RequestInterface $request)
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{
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return $this->getPayload($request);
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}
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protected function createCanonicalizedPath($path)
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{
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$doubleEncoded = rawurlencode(ltrim($path, '/'));
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return '/' . str_replace('%2F', '/', $doubleEncoded);
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}
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private function createStringToSign($longDate, $credentialScope, $creq)
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{
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$hash = hash('sha256', $creq);
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return "AWS4-HMAC-SHA256\n{$longDate}\n{$credentialScope}\n{$hash}";
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}
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private function createPresignedRequest(
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RequestInterface $request,
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CredentialsInterface $credentials
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) {
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$parsedRequest = $this->parseRequest($request);
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// Make sure to handle temporary credentials
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if ($token = $credentials->getSecurityToken()) {
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$parsedRequest['headers']['X-Amz-Security-Token'] = [$token];
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}
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return $this->moveHeadersToQuery($parsedRequest);
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}
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/**
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* @param array $parsedRequest
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* @param string $payload Hash of the request payload
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* @return array Returns an array of context information
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*/
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private function createContext(array $parsedRequest, $payload)
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{
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// The following headers are not signed because signing these headers
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// would potentially cause a signature mismatch when sending a request
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// through a proxy or if modified at the HTTP client level.
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static $blacklist = [
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'cache-control' => true,
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'content-type' => true,
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'content-length' => true,
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'expect' => true,
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'max-forwards' => true,
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'pragma' => true,
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'range' => true,
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'te' => true,
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'if-match' => true,
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'if-none-match' => true,
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'if-modified-since' => true,
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'if-unmodified-since' => true,
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'if-range' => true,
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'accept' => true,
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'authorization' => true,
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'proxy-authorization' => true,
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'from' => true,
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'referer' => true,
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'user-agent' => true
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];
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// Normalize the path as required by SigV4
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$canon = $parsedRequest['method'] . "\n"
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. $this->createCanonicalizedPath($parsedRequest['path']) . "\n"
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. $this->getCanonicalizedQuery($parsedRequest['query']) . "\n";
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// Case-insensitively aggregate all of the headers.
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$aggregate = [];
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foreach ($parsedRequest['headers'] as $key => $values) {
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$key = strtolower($key);
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if (!isset($blacklist[$key])) {
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foreach ($values as $v) {
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$aggregate[$key][] = $v;
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}
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}
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}
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ksort($aggregate);
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$canonHeaders = [];
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foreach ($aggregate as $k => $v) {
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if (count($v) > 0) {
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sort($v);
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}
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$canonHeaders[] = $k . ':' . preg_replace('/\s+/', ' ', implode(',', $v));
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}
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$signedHeadersString = implode(';', array_keys($aggregate));
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$canon .= implode("\n", $canonHeaders) . "\n\n"
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. $signedHeadersString . "\n"
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. $payload;
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return ['creq' => $canon, 'headers' => $signedHeadersString];
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}
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private function getCanonicalizedQuery(array $query)
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{
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unset($query['X-Amz-Signature']);
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if (!$query) {
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return '';
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}
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$qs = '';
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ksort($query);
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foreach ($query as $k => $v) {
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if (!is_array($v)) {
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$qs .= rawurlencode($k) . '=' . rawurlencode($v) . '&';
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} else {
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sort($v);
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foreach ($v as $value) {
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$qs .= rawurlencode($k) . '=' . rawurlencode($value) . '&';
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}
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}
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}
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return substr($qs, 0, -1);
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}
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private function convertExpires($expires)
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{
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if ($expires instanceof \DateTime) {
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$expires = $expires->getTimestamp();
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} elseif (!is_numeric($expires)) {
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$expires = strtotime($expires);
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}
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$duration = $expires - time();
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// Ensure that the duration of the signature is not longer than a week
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if ($duration > 604800) {
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throw new \InvalidArgumentException('The expiration date of a '
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. 'signature version 4 presigned URL must be less than one '
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. 'week');
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}
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return $duration;
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}
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private function moveHeadersToQuery(array $parsedRequest)
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{
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foreach ($parsedRequest['headers'] as $name => $header) {
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$lname = strtolower($name);
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if (substr($lname, 0, 5) == 'x-amz') {
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$parsedRequest['query'][$name] = $header;
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}
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if ($lname !== 'host') {
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unset($parsedRequest['headers'][$name]);
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}
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}
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return $parsedRequest;
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}
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private function parseRequest(RequestInterface $request)
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{
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// Clean up any previously set headers.
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/** @var RequestInterface $request */
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$request = $request
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->withoutHeader('X-Amz-Date')
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->withoutHeader('Date')
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->withoutHeader('Authorization');
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$uri = $request->getUri();
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return [
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'method' => $request->getMethod(),
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'path' => $uri->getPath(),
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'query' => Psr7\parse_query($uri->getQuery()),
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'uri' => $uri,
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'headers' => $request->getHeaders(),
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'body' => $request->getBody(),
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'version' => $request->getProtocolVersion()
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];
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}
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private function buildRequest(array $req)
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{
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if ($req['query']) {
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$req['uri'] = $req['uri']->withQuery(Psr7\build_query($req['query']));
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}
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return new Psr7\Request(
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$req['method'],
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$req['uri'],
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$req['headers'],
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$req['body'],
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$req['version']
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);
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}
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}
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