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Karman Storage Provider interface for amazon web services (primarily S3)
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/*
* Copyright 2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.bertramlabs.plugins.karman.aws
import com.amazonaws.util.AwsHostNameUtils
import com.amazonaws.auth.AWSCredentialsProvider
import com.amazonaws.auth.AWSStaticCredentialsProvider
import com.amazonaws.auth.BasicSessionCredentials
import com.amazonaws.auth.AWSCredentials
import com.amazonaws.auth.BasicAWSCredentials
import com.amazonaws.auth.DefaultAWSCredentialsProviderChain
import com.amazonaws.auth.InstanceProfileCredentialsProvider
import com.amazonaws.auth.STSAssumeRoleSessionCredentialsProvider
import com.amazonaws.internal.StaticCredentialsProvider
import com.amazonaws.regions.Region
import com.amazonaws.regions.RegionUtils
import com.amazonaws.services.s3.AmazonS3Client
import com.amazonaws.services.s3.AmazonS3EncryptionClient
import com.amazonaws.services.s3.S3ClientOptions
import com.amazonaws.services.s3.model.Bucket
import com.amazonaws.services.s3.model.CryptoConfiguration
import com.amazonaws.services.s3.model.CryptoStorageMode
import com.amazonaws.ClientConfiguration
import com.amazonaws.services.s3.model.EncryptionMaterials
import com.amazonaws.services.s3.model.StaticEncryptionMaterialsProvider
import com.amazonaws.services.securitytoken.AWSSecurityTokenService
import com.amazonaws.services.securitytoken.AWSSecurityTokenServiceClientBuilder
import com.amazonaws.services.securitytoken.model.AssumeRoleRequest
import com.amazonaws.services.securitytoken.model.AssumeRoleResult
import com.bertramlabs.plugins.karman.Directory
import com.amazonaws.auth.AnonymousAWSCredentials
import com.bertramlabs.plugins.karman.StorageProvider
import org.apache.commons.beanutils.PropertyUtils
import org.apache.http.HttpHost
import org.apache.http.conn.ConnectTimeoutException
import org.apache.http.conn.ssl.SSLConnectionSocketFactory
import org.apache.http.conn.ssl.SSLContextBuilder
import org.apache.http.conn.ssl.TrustStrategy
import org.apache.http.protocol.HttpContext
import javax.crypto.spec.SecretKeySpec
import javax.net.ssl.SSLContext
import javax.net.ssl.SSLSocket
import java.lang.reflect.InvocationTargetException
import java.security.cert.CertificateException
import java.security.cert.X509Certificate
class S3StorageProvider extends StorageProvider {
static String providerName = "s3"
static SSLContext sslcontext
static SSLConnectionSocketFactory sslConnectionFactory
String accessKey = ''
String secretKey = ''
Boolean useHostCredentials = false
String stsAssumeRole
String stsExternalId = null
String token = ''
String region = ''
String endpoint = ''
String baseUrl
Map baseUrls
String symmetricKey
String protocol = 'https'
String proxyHost
Integer proxyPort
String proxyUser
String proxyPassword
String proxyWorkstation
String proxyDomain
String noProxy
Integer maxConnections = 50
Boolean keepAlive = false
Boolean useGzip = false
Boolean anonymous = false
Boolean forceMultipart = false
Boolean disableChunkedEncoding = false
Boolean pathStyleAccess = false
private Date clientExpires=null
AmazonS3Client client = null
Long chunkSize = 100l*1024l*1024l
static {
sslcontext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
@Override
boolean isTrusted(X509Certificate[] chain, String authType) throws java.security.cert.CertificateException {
return true
}
}).build()
sslConnectionFactory = new SSLConnectionSocketFactory(sslcontext, SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER) {
@Override
Socket connectSocket(int connectTimeout, Socket socket, HttpHost host, InetSocketAddress remoteAddress, InetSocketAddress localAddress, HttpContext context) throws IOException, ConnectTimeoutException {
if(socket instanceof SSLSocket) {
try {
socket.setEnabledProtocols(['SSLv3', 'TLSv1', 'TLSv1.1', 'TLSv1.2'] as String[])
PropertyUtils.setProperty(socket, "host", host.getHostName())
} catch (NoSuchMethodException ex) {}
catch (IllegalAccessException ex) {}
catch (InvocationTargetException ex) {}
catch (Exception ex) {
}
}
return super.connectSocket(30000, socket, host, remoteAddress, localAddress, context)
}
}
}
public S3StorageProvider(Map options) {
accessKey = options.accessKey ?: accessKey
secretKey = options.secretKey ?: secretKey
useHostCredentials = options.useHostCredentials ?: useHostCredentials
stsAssumeRole = options.stsAssumeRole ?: stsAssumeRole
token = options.token ?: token
region = options.region ?: region
endpoint = options.endpoint ?: endpoint
symmetricKey = options.symmetricKey ?: symmetricKey
protocol = options.protocol ?: protocol
maxConnections = options.maxConnections ?: maxConnections
keepAlive = options.keepAlive ?: keepAlive
defaultFileACL = options.defaultFileACL ?: defaultFileACL
useGzip = options.useGzip ?: useGzip
forceMultipart = options.forceMultipart ?: forceMultipart
disableChunkedEncoding = options.disableChunkedEncoding ?: disableChunkedEncoding
pathStyleAccess = options.pathStyleAccess ?: pathStyleAccess
anonymous = options.anonymous ?: anonymous
baseUrl = options.baseUrl ?: baseUrl
baseUrls = options.baseUrls ?: baseUrls
proxyHost = options.proxyHost ?: proxyHost
proxyPort = options.proxyPort ?: proxyPort
proxyUser = options.proxyUser ?: proxyUser
proxyPassword = options.proxyPassword ?: proxyPassword
proxyDomain = options.proxyDomain ?: proxyDomain
proxyWorkstation = options.proxyWorkstation ?: proxyWorkstation
chunkSize = options.chunkSize ?: chunkSize
tempDir = options.tempDir ?: tempDir
}
Directory getDirectory(String name) {
new S3Directory(name: name, provider: this)
}
List getDirectories() {
List buckets = s3Client.listBuckets()
buckets.collect { bucket -> directoryFromS3Bucket(bucket)}
}
AmazonS3Client getS3Client() {
if(client) {
if(clientExpires == null || clientExpires > new Date()) {
return client
}
}
AWSCredentials credentials = null
if (accessKey && secretKey && token) {
credentials = new BasicSessionCredentials (accessKey, secretKey, token)
}
else if (accessKey && secretKey && !token) {
credentials = new BasicAWSCredentials(accessKey, secretKey)
} else if(anonymous){
credentials = new AnonymousAWSCredentials()
}
AWSCredentialsProvider credentialsProvider
if (credentials) {
credentialsProvider = new AWSStaticCredentialsProvider(credentials)
} else {
if(useHostCredentials) {
credentialsProvider = new InstanceProfileCredentialsProvider()
} else {
credentialsProvider = new DefaultAWSCredentialsProviderChain()
}
}
if(stsAssumeRole) {
AWSSecurityTokenService sts = AWSSecurityTokenServiceClientBuilder.standard().withCredentials(credentialsProvider).withRegion(region).build()
AssumeRoleResult roleResult = sts.assumeRole(new AssumeRoleRequest().withRoleArn(stsAssumeRole).withRoleSessionName('karman').withExternalId(stsExternalId))
if(roleResult.credentials) {
credentialsProvider = null
}
def roleCredentials = roleResult.credentials
credentials = new BasicSessionCredentials(roleCredentials.getAccessKeyId(), roleCredentials.getSecretAccessKey(), roleCredentials.getSessionToken());
clientExpires = roleCredentials.getExpiration()
}
ClientConfiguration configuration = new ClientConfiguration()
configuration.setUseTcpKeepAlive(keepAlive)
configuration.setMaxConnections(maxConnections)
configuration.setProtocol(protocol == 'https' ? com.amazonaws.Protocol.HTTPS : com.amazonaws.Protocol.HTTP)
if(proxyHost) {
configuration.setProxyHost(proxyHost)
}
if(proxyPort) {
configuration.setProxyPort(proxyPort)
}
if(proxyUser) {
configuration.setProxyUsername(proxyUser)
}
if(proxyPassword) {
configuration.setProxyPassword(proxyPassword)
}
if(proxyDomain) {
configuration.setProxyDomain(proxyDomain)
}
if(proxyWorkstation) {
configuration.setProxyWorkstation(proxyWorkstation)
}
if(noProxy) {
configuration.setNonProxyHosts(noProxy)
}
configuration.setUseGzip(useGzip)
if (endpoint) {
configuration.getApacheHttpClientConfig().setSslSocketFactory(sslConnectionFactory)
}
S3ClientOptions clientOptions = new S3ClientOptions()
if(disableChunkedEncoding) {
clientOptions.disableChunkedEncoding()
}
if(pathStyleAccess) {
clientOptions.setPathStyleAccess(pathStyleAccess)
}
if(symmetricKey) {
EncryptionMaterials materials = new EncryptionMaterials(new SecretKeySpec(symmetricKey.bytes,'AES'))
CryptoConfiguration cryptoConfig = new CryptoConfiguration().withStorageMode(CryptoStorageMode.ObjectMetadata)
if(credentialsProvider) {
client = new AmazonS3EncryptionClient(credentialsProvider,
new StaticEncryptionMaterialsProvider(materials),
configuration,
cryptoConfig)
} else if(credentials) {
client = new AmazonS3EncryptionClient(credentials,new StaticEncryptionMaterialsProvider(materials),configuration,cryptoConfig)
}
} else {
if(credentialsProvider) {
client = new AmazonS3Client(credentialsProvider, configuration)
} else if (credentials) {
client = new AmazonS3Client(credentials, configuration)
}
}
client.setS3ClientOptions(clientOptions)
if (region) {
Region region = RegionUtils.getRegion(region)
client.region = region
}
if (endpoint) {
client.endpoint = endpoint
/**
Edge case for S3 Like URLS that are not Amazon and follow the domain structure S3.*.com
AWS Java SDK will automatically try and extract the region from * in s3.*.com and does not verify if its a valid Amazon region
Not doing below will result in InvalidLocationConstraint error being thrown on Bucket Creation
AWS Java SDK will treat us-east-1 as a null Location Constraint (empty Location Constraint) so we can explicitly set this to prevent LocationConstraint
issues caused by the SDK automatically trying to extract a region from the URL
**/
def host = getHostName(endpoint)
if (!region && host) { //No region specified in Karman
def sdkStandardParsedRegion = AwsHostNameUtils.parseRegion(host, 's3') //AmazonS3Client.createBucket (v1) uses region from this in LocationConstraint unless override is specified
def sdkAmazonPartitionParsedRegion = AwsHostNameUtils.parseRegionFromAwsPartitionPattern(host) //has to end in amazonaws.com
if (sdkStandardParsedRegion && sdkAmazonPartitionParsedRegion == null) { //Not an amazon URL and SDK thinks there is a region in the URL and could incorrectly set it unless we correct region override
def awsRegions = RegionUtils.getRegions()
if (!awsRegions.contains(sdkStandardParsedRegion)) { //not a valid region in the URL
client.setSignerRegionOverride("us-east-1") // Doing this makes SDK not set a location constraint for the invalid region
}
}
}
}
client
}
public void shutdown() {
if(client) {
client.shutdown()
}
}
// PRIVATE
private S3Directory directoryFromS3Bucket(bucket) {
new S3Directory(
bucket: bucket,
name: bucket.name,
provider: this
)
}
private getHostName(String url) {
URI uri = new URI(url)
String hostname = uri.getHost()
//check if not null then return only hostname, without www.
if (hostname != null) {
return hostname.startsWith("www.") ? hostname.substring(4) : hostname
}
return hostname
}
}