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/*
* Copyright © 2017-2019 AT&T, Bell Canada
* Modifications Copyright © 2019 Huawei.
*
* 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 org.onap.ccsdk.cds.blueprintsprocessor.rest.service
import org.apache.http.conn.ssl.NoopHostnameVerifier
import org.apache.http.conn.ssl.SSLConnectionSocketFactory
import org.apache.http.impl.client.CloseableHttpClient
import org.apache.http.impl.client.HttpClients
import org.apache.http.message.BasicHeader
import org.apache.http.ssl.SSLContextBuilder
import org.onap.ccsdk.cds.blueprintsprocessor.rest.BasicAuthRestClientProperties
import org.onap.ccsdk.cds.blueprintsprocessor.rest.RestClientProperties
import org.onap.ccsdk.cds.blueprintsprocessor.rest.RestLibConstants
import org.onap.ccsdk.cds.blueprintsprocessor.rest.SSLBasicAuthRestClientProperties
import org.onap.ccsdk.cds.blueprintsprocessor.rest.SSLRestClientProperties
import org.onap.ccsdk.cds.blueprintsprocessor.rest.SSLTokenAuthRestClientProperties
import org.onap.ccsdk.cds.blueprintsprocessor.rest.utils.WebClientUtils
import org.springframework.http.HttpHeaders
import org.springframework.http.MediaType
import java.io.File
import java.io.FileInputStream
import java.security.KeyStore
import java.security.cert.X509Certificate
open class SSLRestClientService(private val restClientProperties: SSLRestClientProperties) :
BaseBlueprintWebClientService<SSLRestClientProperties>() {
var auth: BlueprintWebClientService? = null
init {
auth = getAuthService()
}
override fun getRestClientProperties(): SSLRestClientProperties {
return restClientProperties
}
private fun getAuthService(): BaseBlueprintWebClientService<RestClientProperties>? {
// type,url and additional headers don't get carried over to TokenAuthRestClientProperties from SSLTokenAuthRestClientProperties
// set them in auth obj to be consistent. TODO: refactor
return when (restClientProperties) {
is SSLBasicAuthRestClientProperties -> {
val basicAuthProps = BasicAuthRestClientProperties()
basicAuthProps.username = restClientProperties.username
basicAuthProps.password = restClientProperties.password
basicAuthProps.additionalHeaders = restClientProperties.additionalHeaders
basicAuthProps.url = restClientProperties.url
basicAuthProps.type = restClientProperties.type
BasicAuthRestClientService(basicAuthProps)
}
is SSLTokenAuthRestClientProperties -> {
val token = restClientProperties.tokenAuth!!
token.additionalHeaders = restClientProperties.additionalHeaders
token.url = restClientProperties.url
token.type = restClientProperties.type
TokenAuthRestClientService(token)
}
else -> {
// Returns null for No auth
null
}
}
}
override fun defaultHeaders(): Map<String, String> {
if (auth != null) {
return auth!!.defaultHeaders()
}
return if (restClientProperties.type == RestLibConstants.TYPE_SSL_NO_DEF_HEADERS)
mapOf()
else
mapOf(
HttpHeaders.CONTENT_TYPE to MediaType.APPLICATION_JSON_VALUE,
HttpHeaders.ACCEPT to MediaType.APPLICATION_JSON_VALUE
)
}
override fun httpClient(): CloseableHttpClient {
val keystoreInstance = restClientProperties.keyStoreInstance
val sslKey = restClientProperties.sslKey
val sslKeyPwd = restClientProperties.sslKeyPassword
val sslTrust = restClientProperties.sslTrust
val sslTrustPwd = restClientProperties.sslTrustPassword
val sslTrustIgnoreHostname = restClientProperties.sslTrustIgnoreHostname
val acceptingTrustStrategy = { _: Array<X509Certificate>, _: String ->
true
}
val sslContext = SSLContextBuilder.create()
if (sslKey != null && sslKeyPwd != null) {
FileInputStream(sslKey).use { keyInput ->
val keyStore = KeyStore.getInstance(keystoreInstance)
keyStore.load(keyInput, sslKeyPwd.toCharArray())
sslContext.loadKeyMaterial(keyStore, sslKeyPwd.toCharArray())
}
}
sslContext.loadTrustMaterial(File(sslTrust), sslTrustPwd.toCharArray(), acceptingTrustStrategy)
var csf: SSLConnectionSocketFactory
if (sslTrustIgnoreHostname) {
csf = SSLConnectionSocketFactory(sslContext.build(), NoopHostnameVerifier())
} else {
csf = SSLConnectionSocketFactory(sslContext.build())
}
return HttpClients.custom()
.addInterceptorFirst(WebClientUtils.logRequest())
.addInterceptorLast(WebClientUtils.logResponse())
.setDefaultRequestConfig(getRequestConfig())
.setSSLSocketFactory(csf).build()
}
override fun convertToBasicHeaders(headers: Map<String, String>): Array<BasicHeader> {
val mergedDefaultAndSuppliedHeaders = defaultHeaders().plus(headers)
// During the initialization, getAuthService() sets the auth variable.
// If it's not null, then we have an authentication mechanism.
// If null - indicates no-auth used
if (auth != null) {
return auth!!.convertToBasicHeaders(mergedDefaultAndSuppliedHeaders)
}
// inject additionalHeaders
return super.convertToBasicHeaders(
mergedDefaultAndSuppliedHeaders
.plus(verifyAdditionalHeaders(restClientProperties))
)
}
}
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