From ce5b8db39f64101d7ac9fae2847f3db614f14638 Mon Sep 17 00:00:00 2001
From: Morten Tokle <mortent@oath.com>
Date: Fri, 20 Oct 2017 11:06:26 +0200
Subject: Add Athenz identity provider and configuration

---
 container-disc/pom.xml                             |  11 ++
 .../jdisc/athenz/AthenzIdentityProvider.java       | 121 +++++++++++++++++++++
 .../container/jdisc/athenz/AthenzService.java      |  47 ++++++++
 .../container/jdisc/athenz/InstanceIdentity.java   |  47 ++++++++
 .../jdisc/athenz/InstanceRegisterInformation.java  |  38 +++++++
 .../container/jdisc/athenz/ServiceProviderApi.java |  47 ++++++++
 6 files changed, 311 insertions(+)
 create mode 100644 container-disc/src/main/java/com/yahoo/container/jdisc/athenz/AthenzIdentityProvider.java
 create mode 100644 container-disc/src/main/java/com/yahoo/container/jdisc/athenz/AthenzService.java
 create mode 100644 container-disc/src/main/java/com/yahoo/container/jdisc/athenz/InstanceIdentity.java
 create mode 100644 container-disc/src/main/java/com/yahoo/container/jdisc/athenz/InstanceRegisterInformation.java
 create mode 100644 container-disc/src/main/java/com/yahoo/container/jdisc/athenz/ServiceProviderApi.java

(limited to 'container-disc')

diff --git a/container-disc/pom.xml b/container-disc/pom.xml
index 44afe74459d..5409d9b1a40 100644
--- a/container-disc/pom.xml
+++ b/container-disc/pom.xml
@@ -130,6 +130,17 @@
       <scope>provided</scope>
     </dependency>
     <!-- end WARNING -->
+    <!-- Athenz -->
+    <dependency>
+      <groupId>org.apache.httpcomponents</groupId>
+      <artifactId>httpclient</artifactId>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.yahoo.athenz</groupId>
+      <artifactId>athenz-auth-core</artifactId>
+      <version>${athenz.version}</version>
+    </dependency>
   </dependencies>
   <properties>
     <!-- These versions must be the ones used by the current jersey version (see vespa_jersey2/target/dependency).
diff --git a/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/AthenzIdentityProvider.java b/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/AthenzIdentityProvider.java
new file mode 100644
index 00000000000..f67afdfc458
--- /dev/null
+++ b/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/AthenzIdentityProvider.java
@@ -0,0 +1,121 @@
+package com.yahoo.container.jdisc.athenz;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.google.inject.Inject;
+import com.yahoo.athenz.auth.util.Crypto;
+import com.yahoo.cloud.config.ConfigserverConfig;
+import com.yahoo.component.AbstractComponent;
+import com.yahoo.container.core.identity.IdentityConfig;
+import org.bouncycastle.asn1.x509.GeneralName;
+import org.bouncycastle.operator.OperatorCreationException;
+
+import java.io.IOException;
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.NoSuchAlgorithmException;
+
+/**
+ * @author mortent
+ */
+public final class AthenzIdentityProvider extends AbstractComponent {
+
+    private InstanceIdentity instanceIdentity;
+
+    private final String athenzUrl;
+
+    private final String dnsSuffix;
+    private final String providerUniqueId;
+    private final String providerServiceName;
+
+    @Inject
+    public AthenzIdentityProvider(IdentityConfig config, ConfigserverConfig configserverConfig) throws IOException {
+        this(config, new ServiceProviderApi(configserverConfig.serviceProviderEndpoint()), new AthenzService());
+    }
+
+    // Test only
+    public AthenzIdentityProvider(IdentityConfig config, ServiceProviderApi serviceProviderApi, AthenzService athenzService) throws IOException {
+        KeyPair keyPair = createKeyPair();
+        String signedIdentityDocument = serviceProviderApi.getSignedIdentityDocument();
+        this.athenzUrl = getZtsEndpoint(signedIdentityDocument);
+        dnsSuffix = getDnsSuffix(signedIdentityDocument);
+        providerUniqueId = getProviderUniqueId(signedIdentityDocument);
+        providerServiceName = getProviderServiceName(signedIdentityDocument);
+
+        InstanceRegisterInformation instanceRegisterInformation = new InstanceRegisterInformation(
+                providerServiceName,
+                config.domain(),
+                config.serviceName(),
+                signedIdentityDocument,
+                createCSR(keyPair, config),
+                true
+        );
+        instanceIdentity = athenzService.sendInstanceRegisterRequest(instanceRegisterInformation, athenzUrl);
+    }
+
+    private String getProviderUniqueId(String signedIdentityDocument) throws IOException {
+        return getJsonNode(signedIdentityDocument, "provider-unique-id");
+    }
+
+    private String getDnsSuffix(String signedIdentityDocument) throws IOException {
+        return getJsonNode(signedIdentityDocument, "dns-suffix");
+    }
+
+    private String getProviderServiceName(String signedIdentityDocument) throws IOException {
+        return getJsonNode(signedIdentityDocument, "provider-service");
+    }
+
+    private String getZtsEndpoint(String signedIdentityDocument) throws IOException {
+        return getJsonNode(signedIdentityDocument, "zts-endpoint");
+    }
+
+    private String getJsonNode(String jsonString, String path) throws IOException {
+        ObjectMapper mapper = new ObjectMapper();
+        JsonNode jsonNode = mapper.readTree(jsonString);
+        return jsonNode.get(path).asText();
+    }
+
+    private KeyPair createKeyPair() {
+        try {
+            KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
+            return kpg.generateKeyPair();
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+            throw new RuntimeException(e);
+        }
+    }
+
+    private String createCSR(KeyPair keyPair, IdentityConfig identityConfig) throws IOException {
+
+        try {
+            // Add SAN dnsname <service>.<domain-with-dashes>.<provider-dnsname-suffix>
+            // and SAN dnsname <provider-unique-instance-id>.instanceid.athenz.<provider-dnsname-suffix>
+            GeneralName[] sanDnsNames = new GeneralName[]{
+                    new GeneralName(GeneralName.dNSName, String.format("%s.%s.%s",
+                                                                          identityConfig.serviceName(),
+                                                                          identityConfig.domain().replace(".", "-"),
+                                                                          dnsSuffix)),
+                    new GeneralName(GeneralName.dNSName, String.format("%s.instanceid.athenz.%s",
+                                                                       providerUniqueId,
+                                                                       dnsSuffix))
+            };
+
+            return Crypto.generateX509CSR(keyPair.getPrivate(),
+                                          keyPair.getPublic(),
+                                          String.format("CN=%s.%s", identityConfig.domain(), identityConfig.serviceName()),
+                                          sanDnsNames);
+        } catch (OperatorCreationException e) {
+            e.printStackTrace();
+            throw new RuntimeException(e);
+        }
+    }
+
+    public String getNToken() {
+        return instanceIdentity.getServiceToken();
+    }
+
+    public String getX509Cert() {
+        return instanceIdentity.getX509Certificate();
+    }
+}
+
diff --git a/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/AthenzService.java b/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/AthenzService.java
new file mode 100644
index 00000000000..2acd630aa7d
--- /dev/null
+++ b/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/AthenzService.java
@@ -0,0 +1,47 @@
+package com.yahoo.container.jdisc.athenz;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpUriRequest;
+import org.apache.http.client.methods.RequestBuilder;
+import org.apache.http.entity.ContentType;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.util.EntityUtils;
+import org.eclipse.jetty.http.HttpStatus;
+
+import java.io.IOException;
+
+/**
+ * @author mortent
+ */
+public class AthenzService {
+
+    /**
+     * Send instance register request to ZTS, get InstanceIdentity
+     *
+     * @param instanceRegisterInformation
+     */
+     InstanceIdentity sendInstanceRegisterRequest(InstanceRegisterInformation instanceRegisterInformation, String athenzUrl) {
+        try(CloseableHttpClient client = HttpClientBuilder.create().build()) {
+            ObjectMapper objectMapper = new ObjectMapper();
+            System.out.println(objectMapper.writeValueAsString(instanceRegisterInformation));
+            HttpUriRequest postRequest = RequestBuilder.post()
+                    .setUri(athenzUrl + "/instance")
+                    .setEntity(new StringEntity(objectMapper.writeValueAsString(instanceRegisterInformation), ContentType.APPLICATION_JSON))
+                    .build();
+            CloseableHttpResponse response = client.execute(postRequest);
+            if(HttpStatus.isSuccess(response.getStatusLine().getStatusCode())) {
+                return objectMapper.readValue(response.getEntity().getContent(), InstanceIdentity.class);
+            } else {
+                String s = EntityUtils.toString(response.getEntity());
+                System.out.println("s = " + s);
+                throw new RuntimeException(response.toString());
+            }
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+}
diff --git a/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/InstanceIdentity.java b/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/InstanceIdentity.java
new file mode 100644
index 00000000000..e2b65685cdb
--- /dev/null
+++ b/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/InstanceIdentity.java
@@ -0,0 +1,47 @@
+package com.yahoo.container.jdisc.athenz;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import java.util.Map;
+
+/**
+ * Used for deserializing response from ZTS
+ *
+ * @author mortent
+ */
+@JsonIgnoreProperties(ignoreUnknown = true)
+@JsonInclude(JsonInclude.Include.NON_NULL)
+class InstanceIdentity {
+    @JsonProperty("attributes")
+    Map<String, String> attributes;
+    @JsonProperty("provider")
+    private String provider;
+    @JsonProperty("name")
+    private String name;
+    @JsonProperty("instanceId")
+    private String instanceId;
+    @JsonProperty("x509Certificate")
+    private String x509Certificate;
+    @JsonProperty("x509CertificateSigner")
+    private String x509CertificateSigner;
+    @JsonProperty("sshCertificate")
+    private String sshCertificate;
+    @JsonProperty("sshCertificateSigner")
+    private String sshCertificateSigner;
+    @JsonProperty("serviceToken")
+    private String serviceToken;
+
+    public String getX509Certificate() {
+        return x509Certificate;
+    }
+
+    public String getServiceToken() {
+        return serviceToken;
+    }
+
+    public void setServiceToken(String serviceToken) {
+        this.serviceToken = serviceToken;
+    }
+}
diff --git a/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/InstanceRegisterInformation.java b/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/InstanceRegisterInformation.java
new file mode 100644
index 00000000000..2fa3c598c58
--- /dev/null
+++ b/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/InstanceRegisterInformation.java
@@ -0,0 +1,38 @@
+package com.yahoo.container.jdisc.athenz;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Used for serializing request to ZTS
+ *
+ * @author mortent
+ */
+@JsonIgnoreProperties(ignoreUnknown = true)
+@JsonInclude(JsonInclude.Include.NON_NULL)
+class InstanceRegisterInformation {
+    @JsonProperty("provider")
+    private final String provider;
+    @JsonProperty("domain")
+    private final String domain;
+    @JsonProperty("service")
+    private final String service;
+    @JsonProperty("attestationData")
+    private final String attestationData;
+    @JsonProperty("ssh")
+    private final String ssh = null; // Not needed
+    @JsonProperty("csr")
+    private final String csr;
+    @JsonProperty("token")
+    private final boolean token;
+
+    public InstanceRegisterInformation(String provider, String domain, String service, String attestationData, String csr, boolean token) {
+        this.provider = provider;
+        this.domain = domain;
+        this.service = service;
+        this.attestationData = attestationData;
+        this.csr = csr;
+        this.token = token;
+    }
+}
diff --git a/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/ServiceProviderApi.java b/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/ServiceProviderApi.java
new file mode 100644
index 00000000000..0b417a4d440
--- /dev/null
+++ b/container-disc/src/main/java/com/yahoo/container/jdisc/athenz/ServiceProviderApi.java
@@ -0,0 +1,47 @@
+package com.yahoo.container.jdisc.athenz;
+
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.RequestBuilder;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.util.EntityUtils;
+import org.eclipse.jetty.http.HttpStatus;
+
+import java.io.IOException;
+
+/**
+ * @author mortent
+ */
+public class ServiceProviderApi {
+
+    private final String providerEndpoint;
+
+    public ServiceProviderApi(String providerEndpoint) {
+        this.providerEndpoint = providerEndpoint;
+    }
+
+
+    /**
+     * Get signed identity document from config server
+     *
+     * @return
+     */
+    String getSignedIdentityDocument() {
+
+        // TODO Use client side auth to establish trusted secure channel
+        try (CloseableHttpClient httpClient = HttpClientBuilder.create().build()) {
+
+            CloseableHttpResponse idDocResponse = httpClient.execute(RequestBuilder.get().setUri(providerEndpoint + "/identity-document").build());
+            if (HttpStatus.isSuccess(idDocResponse.getStatusLine().getStatusCode())) {
+                return EntityUtils.toString(idDocResponse.getEntity());
+            } else {
+                // make sure we have retried a few times (AND logged) before giving up
+                throw new RuntimeException("Failed to initialize Athenz instance provider");
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+            throw new RuntimeException(e);
+        }
+    }
+
+}
-- 
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