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S3/Minio storage controller Support
This commit is contained in:
Chris
693
storage-controllers/s3/Aws/Credentials/CredentialProvider.php
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693
storage-controllers/s3/Aws/Credentials/CredentialProvider.php
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@@ -0,0 +1,693 @@
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<?php
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namespace Aws\Credentials;
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use Aws;
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use Aws\Api\DateTimeResult;
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use Aws\CacheInterface;
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use Aws\Exception\CredentialsException;
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use Aws\Sts\StsClient;
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use GuzzleHttp\Promise;
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/**
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* Credential providers are functions that accept no arguments and return a
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* promise that is fulfilled with an {@see \Aws\Credentials\CredentialsInterface}
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* or rejected with an {@see \Aws\Exception\CredentialsException}.
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*
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* <code>
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* use Aws\Credentials\CredentialProvider;
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* $provider = CredentialProvider::defaultProvider();
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* // Returns a CredentialsInterface or throws.
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* $creds = $provider()->wait();
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* </code>
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*
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* Credential providers can be composed to create credentials using conditional
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* logic that can create different credentials in different environments. You
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* can compose multiple providers into a single provider using
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* {@see Aws\Credentials\CredentialProvider::chain}. This function accepts
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* providers as variadic arguments and returns a new function that will invoke
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* each provider until a successful set of credentials is returned.
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*
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* <code>
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* // First try an INI file at this location.
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* $a = CredentialProvider::ini(null, '/path/to/file.ini');
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* // Then try an INI file at this location.
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* $b = CredentialProvider::ini(null, '/path/to/other-file.ini');
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* // Then try loading from environment variables.
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* $c = CredentialProvider::env();
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* // Combine the three providers together.
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* $composed = CredentialProvider::chain($a, $b, $c);
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* // Returns a promise that is fulfilled with credentials or throws.
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* $promise = $composed();
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* // Wait on the credentials to resolve.
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* $creds = $promise->wait();
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* </code>
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*/
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class CredentialProvider
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{
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const ENV_ARN = 'AWS_ROLE_ARN';
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const ENV_KEY = 'AWS_ACCESS_KEY_ID';
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const ENV_PROFILE = 'AWS_PROFILE';
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const ENV_ROLE_SESSION_NAME = 'AWS_ROLE_SESSION_NAME';
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const ENV_SECRET = 'AWS_SECRET_ACCESS_KEY';
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const ENV_SESSION = 'AWS_SESSION_TOKEN';
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const ENV_TOKEN_FILE = 'AWS_WEB_IDENTITY_TOKEN_FILE';
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/**
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* Create a default credential provider that first checks for environment
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* variables, then checks for the "default" profile in ~/.aws/credentials,
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* then checks for "profile default" profile in ~/.aws/config (which is
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* the default profile of AWS CLI), then tries to make a GET Request to
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* fetch credentials if Ecs environment variable is presented, then checks
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* for credential_process in the "default" profile in ~/.aws/credentials,
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* then for credential_process in the "default profile" profile in
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* ~/.aws/config, and finally checks for EC2 instance profile credentials.
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*
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* This provider is automatically wrapped in a memoize function that caches
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* previously provided credentials.
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*
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* @param array $config Optional array of ecs/instance profile credentials
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* provider options.
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*
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* @return callable
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*/
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public static function defaultProvider(array $config = [])
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{
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$cacheable = [
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'web_identity',
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'ecs',
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'process_credentials',
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'process_config',
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'instance'
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];
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$defaultChain = [
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'env' => self::env(),
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'web_identity' => self::assumeRoleWithWebIdentityCredentialProvider($config),
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'ini' => self::ini(),
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'ini_config' => self::ini('profile default', self::getHomeDir() . '/.aws/config'),
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];
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if (!empty(getenv(EcsCredentialProvider::ENV_URI))) {
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$defaultChain['ecs'] = self::ecsCredentials($config);
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}
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$defaultChain['process_credentials'] = self::process();
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$defaultChain['process_config'] = self::process(
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'profile default',
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self::getHomeDir() . '/.aws/config'
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);
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$defaultChain['instance'] = self::instanceProfile($config);
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if (isset($config['credentials'])
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&& $config['credentials'] instanceof CacheInterface
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) {
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foreach ($cacheable as $provider) {
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if (isset($defaultChain[$provider])) {
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$defaultChain[$provider] = self::cache(
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$defaultChain[$provider],
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$config['credentials'],
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'aws_cached_' . $provider . '_credentials'
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);
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};
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}
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}
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return self::memoize(
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call_user_func_array(
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'self::chain',
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$defaultChain
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)
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);
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}
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/**
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* Create a credential provider function from a set of static credentials.
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*
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* @param CredentialsInterface $creds
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*
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* @return callable
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*/
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public static function fromCredentials(CredentialsInterface $creds)
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{
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$promise = Promise\promise_for($creds);
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return function () use ($promise) {
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return $promise;
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};
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}
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/**
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* Creates an aggregate credentials provider that invokes the provided
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* variadic providers one after the other until a provider returns
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* credentials.
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*
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* @return callable
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*/
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public static function chain()
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{
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$links = func_get_args();
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if (empty($links)) {
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throw new \InvalidArgumentException('No providers in chain');
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}
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return function () use ($links) {
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/** @var callable $parent */
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$parent = array_shift($links);
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$promise = $parent();
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while ($next = array_shift($links)) {
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$promise = $promise->otherwise($next);
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}
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return $promise;
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};
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}
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/**
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* Wraps a credential provider and caches previously provided credentials.
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*
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* Ensures that cached credentials are refreshed when they expire.
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*
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* @param callable $provider Credentials provider function to wrap.
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*
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* @return callable
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*/
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public static function memoize(callable $provider)
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{
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return function () use ($provider) {
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static $result;
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static $isConstant;
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// Constant credentials will be returned constantly.
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if ($isConstant) {
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return $result;
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}
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// Create the initial promise that will be used as the cached value
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// until it expires.
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if (null === $result) {
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$result = $provider();
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}
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// Return credentials that could expire and refresh when needed.
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return $result
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->then(function (CredentialsInterface $creds) use ($provider, &$isConstant, &$result) {
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// Determine if these are constant credentials.
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if (!$creds->getExpiration()) {
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$isConstant = true;
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return $creds;
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}
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// Refresh expired credentials.
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if (!$creds->isExpired()) {
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return $creds;
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}
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// Refresh the result and forward the promise.
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return $result = $provider();
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})
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->otherwise(function($reason) use (&$result) {
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// Cleanup rejected promise.
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$result = null;
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return new Promise\RejectedPromise($reason);
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});
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};
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}
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/**
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* Wraps a credential provider and saves provided credentials in an
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* instance of Aws\CacheInterface. Forwards calls when no credentials found
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* in cache and updates cache with the results.
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*
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* Defaults to using a simple file-based cache when none provided.
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*
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* @param callable $provider Credentials provider function to wrap
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* @param CacheInterface $cache Cache to store credentials
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* @param string|null $cacheKey (optional) Cache key to use
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*
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* @return callable
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*/
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public static function cache(
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callable $provider,
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CacheInterface $cache,
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$cacheKey = null
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) {
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$cacheKey = $cacheKey ?: 'aws_cached_credentials';
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return function () use ($provider, $cache, $cacheKey) {
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$found = $cache->get($cacheKey);
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if ($found instanceof CredentialsInterface && !$found->isExpired()) {
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return Promise\promise_for($found);
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}
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return $provider()
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->then(function (CredentialsInterface $creds) use (
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$cache,
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$cacheKey
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) {
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$cache->set(
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$cacheKey,
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$creds,
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null === $creds->getExpiration() ?
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0 : $creds->getExpiration() - time()
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);
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return $creds;
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});
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};
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}
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/**
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* Provider that creates credentials from environment variables
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* AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, and AWS_SESSION_TOKEN.
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*
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* @return callable
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*/
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public static function env()
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{
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return function () {
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// Use credentials from environment variables, if available
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$key = getenv(self::ENV_KEY);
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$secret = getenv(self::ENV_SECRET);
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if ($key && $secret) {
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return Promise\promise_for(
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new Credentials($key, $secret, getenv(self::ENV_SESSION) ?: NULL)
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);
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}
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return self::reject('Could not find environment variable '
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. 'credentials in ' . self::ENV_KEY . '/' . self::ENV_SECRET);
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};
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}
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/**
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* Credential provider that creates credentials using instance profile
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* credentials.
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*
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* @param array $config Array of configuration data.
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*
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* @return InstanceProfileProvider
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* @see Aws\Credentials\InstanceProfileProvider for $config details.
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*/
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public static function instanceProfile(array $config = [])
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{
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return new InstanceProfileProvider($config);
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}
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/**
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* Credential provider that creates credentials using
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* ecs credentials by a GET request, whose uri is specified
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* by environment variable
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*
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* @param array $config Array of configuration data.
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*
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* @return EcsCredentialProvider
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* @see Aws\Credentials\EcsCredentialProvider for $config details.
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*/
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public static function ecsCredentials(array $config = [])
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{
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return new EcsCredentialProvider($config);
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}
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/**
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* Credential provider that creates credentials using assume role
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*
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* @param array $config Array of configuration data
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* @return callable
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* @see Aws\Credentials\AssumeRoleCredentialProvider for $config details.
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*/
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public static function assumeRole(array $config=[])
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{
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return new AssumeRoleCredentialProvider($config);
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}
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/**
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* Credential provider that creates credentials by assuming role from a
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* Web Identity Token
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*
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* @param array $config Array of configuration data
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* @return callable
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* @see Aws\Credentials\AssumeRoleWithWebIdentityCredentialProvider for
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* $config details.
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*/
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public static function assumeRoleWithWebIdentityCredentialProvider(array $config = [])
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{
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return function () use ($config) {
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$arnFromEnv = getenv(self::ENV_ARN);
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$tokenFromEnv = getenv(self::ENV_TOKEN_FILE);
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$stsClient = isset($config['stsClient'])
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? $config['stsClient']
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: null;
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$region = isset($config['region'])
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? $config['region']
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: null;
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if ($tokenFromEnv && $arnFromEnv) {
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$sessionName = getenv(self::ENV_ROLE_SESSION_NAME)
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? getenv(self::ENV_ROLE_SESSION_NAME)
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: null;
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$provider = new AssumeRoleWithWebIdentityCredentialProvider([
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'RoleArn' => $arnFromEnv,
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'WebIdentityTokenFile' => $tokenFromEnv,
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'SessionName' => $sessionName,
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'client' => $stsClient,
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'region' => $region
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]);
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return $provider();
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}
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$profileName = getenv(self::ENV_PROFILE) ?: 'default';
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if (isset($config['filename'])) {
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$profiles = self::loadProfiles($config['filename']);
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} else {
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$profiles = self::loadDefaultProfiles();
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}
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if (isset($profiles[$profileName])) {
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$profile = $profiles[$profileName];
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if (isset($profile['region'])) {
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$region = $profile['region'];
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}
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if (isset($profile['web_identity_token_file'])
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&& isset($profile['role_arn'])
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) {
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$sessionName = isset($profile['role_session_name'])
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? $profile['role_session_name']
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: null;
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$provider = new AssumeRoleWithWebIdentityCredentialProvider([
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'RoleArn' => $profile['role_arn'],
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'WebIdentityTokenFile' => $profile['web_identity_token_file'],
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'SessionName' => $sessionName,
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'client' => $stsClient,
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'region' => $region
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]);
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return $provider();
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}
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} else {
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return self::reject("Unknown profile: $profileName");
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}
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return self::reject("No RoleArn or WebIdentityTokenFile specified");
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};
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}
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/**
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* Credentials provider that creates credentials using an ini file stored
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* in the current user's home directory.
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*
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* @param string|null $profile Profile to use. If not specified will use
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* the "default" profile in "~/.aws/credentials".
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* @param string|null $filename If provided, uses a custom filename rather
|
||||
* than looking in the home directory.
|
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* @param array|null $config If provided, may contain the following:
|
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* preferStaticCredentials: If true, prefer static
|
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* credentials to role_arn if both are present
|
||||
* disableAssumeRole: If true, disable support for
|
||||
* roles that assume an IAM role. If true and role profile
|
||||
* is selected, an error is raised.
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* stsClient: StsClient used to assume role specified in profile
|
||||
*
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||||
* @return callable
|
||||
*/
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public static function ini($profile = null, $filename = null, array $config = [])
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{
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$filename = $filename ?: (self::getHomeDir() . '/.aws/credentials');
|
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$profile = $profile ?: (getenv(self::ENV_PROFILE) ?: 'default');
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||||
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||||
return function () use ($profile, $filename, $config) {
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$preferStaticCredentials = isset($config['preferStaticCredentials'])
|
||||
? $config['preferStaticCredentials']
|
||||
: false;
|
||||
$disableAssumeRole = isset($config['disableAssumeRole'])
|
||||
? $config['disableAssumeRole']
|
||||
: false;
|
||||
$stsClient = isset($config['stsClient']) ? $config['stsClient'] : null;
|
||||
|
||||
if (!is_readable($filename)) {
|
||||
return self::reject("Cannot read credentials from $filename");
|
||||
}
|
||||
$data = self::loadProfiles($filename);
|
||||
if ($data === false) {
|
||||
return self::reject("Invalid credentials file: $filename");
|
||||
}
|
||||
if (!isset($data[$profile])) {
|
||||
return self::reject("'$profile' not found in credentials file");
|
||||
}
|
||||
|
||||
/*
|
||||
In the CLI, the presence of both a role_arn and static credentials have
|
||||
different meanings depending on how many profiles have been visited. For
|
||||
the first profile processed, role_arn takes precedence over any static
|
||||
credentials, but for all subsequent profiles, static credentials are
|
||||
used if present, and only in their absence will the profile's
|
||||
source_profile and role_arn keys be used to load another set of
|
||||
credentials. This bool is intended to yield compatible behaviour in this
|
||||
sdk.
|
||||
*/
|
||||
$preferStaticCredentialsToRoleArn = ($preferStaticCredentials
|
||||
&& isset($data[$profile]['aws_access_key_id'])
|
||||
&& isset($data[$profile]['aws_secret_access_key']));
|
||||
|
||||
if (isset($data[$profile]['role_arn'])
|
||||
&& !$preferStaticCredentialsToRoleArn
|
||||
) {
|
||||
if ($disableAssumeRole) {
|
||||
return self::reject(
|
||||
"Role assumption profiles are disabled. "
|
||||
. "Failed to load profile " . $profile);
|
||||
}
|
||||
return self::loadRoleProfile(
|
||||
$data,
|
||||
$profile,
|
||||
$filename,
|
||||
$stsClient
|
||||
);
|
||||
}
|
||||
|
||||
if (!isset($data[$profile]['aws_access_key_id'])
|
||||
|| !isset($data[$profile]['aws_secret_access_key'])
|
||||
) {
|
||||
return self::reject("No credentials present in INI profile "
|
||||
. "'$profile' ($filename)");
|
||||
}
|
||||
|
||||
if (empty($data[$profile]['aws_session_token'])) {
|
||||
$data[$profile]['aws_session_token']
|
||||
= isset($data[$profile]['aws_security_token'])
|
||||
? $data[$profile]['aws_security_token']
|
||||
: null;
|
||||
}
|
||||
|
||||
return Promise\promise_for(
|
||||
new Credentials(
|
||||
$data[$profile]['aws_access_key_id'],
|
||||
$data[$profile]['aws_secret_access_key'],
|
||||
$data[$profile]['aws_session_token']
|
||||
)
|
||||
);
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Credentials provider that creates credentials using a process configured in
|
||||
* ini file stored in the current user's home directory.
|
||||
*
|
||||
* @param string|null $profile Profile to use. If not specified will use
|
||||
* the "default" profile in "~/.aws/credentials".
|
||||
* @param string|null $filename If provided, uses a custom filename rather
|
||||
* than looking in the home directory.
|
||||
*
|
||||
* @return callable
|
||||
*/
|
||||
public static function process($profile = null, $filename = null)
|
||||
{
|
||||
$filename = $filename ?: (self::getHomeDir() . '/.aws/credentials');
|
||||
$profile = $profile ?: (getenv(self::ENV_PROFILE) ?: 'default');
|
||||
|
||||
return function () use ($profile, $filename) {
|
||||
if (!is_readable($filename)) {
|
||||
return self::reject("Cannot read process credentials from $filename");
|
||||
}
|
||||
$data = \Aws\parse_ini_file($filename, true, INI_SCANNER_RAW);
|
||||
if ($data === false) {
|
||||
return self::reject("Invalid credentials file: $filename");
|
||||
}
|
||||
if (!isset($data[$profile])) {
|
||||
return self::reject("'$profile' not found in credentials file");
|
||||
}
|
||||
if (!isset($data[$profile]['credential_process'])) {
|
||||
return self::reject("No credential_process present in INI profile "
|
||||
. "'$profile' ($filename)");
|
||||
}
|
||||
|
||||
$credentialProcess = $data[$profile]['credential_process'];
|
||||
$json = shell_exec($credentialProcess);
|
||||
|
||||
$processData = json_decode($json, true);
|
||||
|
||||
// Only support version 1
|
||||
if (isset($processData['Version'])) {
|
||||
if ($processData['Version'] !== 1) {
|
||||
return self::reject("credential_process does not return Version == 1");
|
||||
}
|
||||
}
|
||||
|
||||
if (!isset($processData['AccessKeyId'])
|
||||
|| !isset($processData['SecretAccessKey']))
|
||||
{
|
||||
return self::reject("credential_process does not return valid credentials");
|
||||
}
|
||||
|
||||
if (isset($processData['Expiration'])) {
|
||||
try {
|
||||
$expiration = new DateTimeResult($processData['Expiration']);
|
||||
} catch (\Exception $e) {
|
||||
return self::reject("credential_process returned invalid expiration");
|
||||
}
|
||||
$now = new DateTimeResult();
|
||||
if ($expiration < $now) {
|
||||
return self::reject("credential_process returned expired credentials");
|
||||
}
|
||||
$expires = $expiration->getTimestamp();
|
||||
} else {
|
||||
$expires = null;
|
||||
}
|
||||
|
||||
if (empty($processData['SessionToken'])) {
|
||||
$processData['SessionToken'] = null;
|
||||
}
|
||||
|
||||
return Promise\promise_for(
|
||||
new Credentials(
|
||||
$processData['AccessKeyId'],
|
||||
$processData['SecretAccessKey'],
|
||||
$processData['SessionToken'],
|
||||
$expires
|
||||
)
|
||||
);
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Assumes role for profile that includes role_arn
|
||||
*
|
||||
* @return callable
|
||||
*/
|
||||
private static function loadRoleProfile($profiles, $profileName, $filename, $stsClient)
|
||||
{
|
||||
$roleProfile = $profiles[$profileName];
|
||||
$roleArn = isset($roleProfile['role_arn']) ? $roleProfile['role_arn'] : '';
|
||||
$roleSessionName = isset($roleProfile['role_session_name'])
|
||||
? $roleProfile['role_session_name']
|
||||
: 'aws-sdk-php-' . round(microtime(true) * 1000);
|
||||
|
||||
if (empty($profiles[$profileName]['source_profile'])) {
|
||||
return self::reject("source_profile is not set using profile " .
|
||||
$profileName
|
||||
);
|
||||
}
|
||||
|
||||
$sourceProfileName = $roleProfile['source_profile'];
|
||||
if (!isset($profiles[$sourceProfileName])) {
|
||||
return self::reject("source_profile " . $sourceProfileName
|
||||
. " using profile " . $profileName . " does not exist"
|
||||
);
|
||||
}
|
||||
$sourceRegion = isset($profiles[$sourceProfileName]['region'])
|
||||
? $profiles[$sourceProfileName]['region']
|
||||
: 'us-east-1';
|
||||
|
||||
if (empty($stsClient)) {
|
||||
$config = [
|
||||
'preferStaticCredentials' => true
|
||||
];
|
||||
$sourceCredentials = call_user_func(
|
||||
CredentialProvider::ini($sourceProfileName, $filename, $config)
|
||||
)->wait();
|
||||
$stsClient = new StsClient([
|
||||
'credentials' => $sourceCredentials,
|
||||
'region' => $sourceRegion,
|
||||
'version' => '2011-06-15',
|
||||
]);
|
||||
}
|
||||
|
||||
$result = $stsClient->assumeRole([
|
||||
'RoleArn' => $roleArn,
|
||||
'RoleSessionName' => $roleSessionName
|
||||
]);
|
||||
|
||||
$creds = $stsClient->createCredentials($result);
|
||||
return Promise\promise_for($creds);
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets the environment's HOME directory if available.
|
||||
*
|
||||
* @return null|string
|
||||
*/
|
||||
private static function getHomeDir()
|
||||
{
|
||||
// On Linux/Unix-like systems, use the HOME environment variable
|
||||
if ($homeDir = getenv('HOME')) {
|
||||
return $homeDir;
|
||||
}
|
||||
|
||||
// Get the HOMEDRIVE and HOMEPATH values for Windows hosts
|
||||
$homeDrive = getenv('HOMEDRIVE');
|
||||
$homePath = getenv('HOMEPATH');
|
||||
|
||||
return ($homeDrive && $homePath) ? $homeDrive . $homePath : null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets profiles from specified $filename, or default ini files.
|
||||
*/
|
||||
private static function loadProfiles($filename)
|
||||
{
|
||||
$profileData = \Aws\parse_ini_file($filename, true, INI_SCANNER_RAW);
|
||||
|
||||
// If loading .aws/credentials, also load .aws/config when AWS_SDK_LOAD_NONDEFAULT_CONFIG is set
|
||||
if ($filename === self::getHomeDir() . '/.aws/credentials'
|
||||
&& getenv('AWS_SDK_LOAD_NONDEFAULT_CONFIG')
|
||||
) {
|
||||
$configFilename = self::getHomeDir() . '/.aws/config';
|
||||
$configProfileData = \Aws\parse_ini_file($configFilename, true, INI_SCANNER_RAW);
|
||||
foreach ($configProfileData as $name => $profile) {
|
||||
// standardize config profile names
|
||||
$name = str_replace('profile ', '', $name);
|
||||
if (!isset($profileData[$name])) {
|
||||
$profileData[$name] = $profile;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return $profileData;
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets profiles from ~/.aws/credentials and ~/.aws/config ini files
|
||||
*/
|
||||
private static function loadDefaultProfiles() {
|
||||
$profiles = [];
|
||||
$credFile = self::getHomeDir() . '/.aws/credentials';
|
||||
$configFile = self::getHomeDir() . '/.aws/config';
|
||||
if (file_exists($credFile)) {
|
||||
$profiles = \Aws\parse_ini_file($credFile, true, INI_SCANNER_RAW);
|
||||
}
|
||||
|
||||
if (file_exists($configFile)) {
|
||||
$configProfileData = \Aws\parse_ini_file($configFile, true, INI_SCANNER_RAW);
|
||||
foreach ($configProfileData as $name => $profile) {
|
||||
// standardize config profile names
|
||||
$name = str_replace('profile ', '', $name);
|
||||
if (!isset($profiles[$name])) {
|
||||
$profiles[$name] = $profile;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return $profiles;
|
||||
}
|
||||
|
||||
private static function reject($msg)
|
||||
{
|
||||
return new Promise\RejectedPromise(new CredentialsException($msg));
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user