Receive attachment using Custom Document

Question

Hi ,
I have done integration with an external service where in response , they send me a gz attachment.
I am not able to read it. I want to read it using callout and den process it.Also in below mail trail, you can see my callout code.
Protocol Transport Binding
X-Powered-By=ASP.NET Cache-control=private Content-Length=329 CLIENTIP=Server=Microsoft-IIS/6.0 Date=Thu, 10 Apr 2014 07:15:51 GMT deliverToFabric=TRUE Content-Disposition=attachment; filename=PRREQ10042014101551N36951.95.gz Content-Type=application/octet-stream; Charset=UTF-8 Connection=close
Message Digest
Message Digest
Digest Algorithm
Transport Protocol
HTTP
Transport Protocol Version
HTTP/1.1
Url
security
Transport Headers
X-Powered-By=ASP.NET Cache-control=private Content-Length=329 CLIENTIP=Server=Microsoft-IIS/6.0 Date=Thu, 10 Apr 2014 07:15:51 GMT deliverToFabric=TRUE Content-Disposition=attachment; filename=PRREQ10042014101551N36951.95.gz Content-Type=application/octet-stream; Charset=UTF-8 Connection=close
certificates
certificates
State
ERROR
=============================================================================================================================================
import java.io.ByteArrayInputStream;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.io.FileInputStream;
import java.util.List;
import java.util.Properties;
import oracle.tip.b2b.callout.Callout;
import oracle.tip.b2b.callout.CalloutMessage;
import oracle.tip.b2b.callout.CalloutContext;
import oracle.tip.b2b.callout.exception.*;
import oracle.tip.b2b.domain.B2BParameters;
import oracle.tip.b2b.system.B2BRuntimeException;
import oracle.tip.b2b.system.ErrorKeys;
import org.apache.commons.codec.binary.Base64;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.security.Key;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Security;
import java.security.Signature;
import java.security.cert.X509Certificate;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.Map;
import java.util.UUID;
import javax.crypto.Cipher;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.binary.Hex;
import org.bouncycastle.cert.jcajce.JcaCertStore;
import org.bouncycastle.cms.CMSProcessableByteArray;
import org.bouncycastle.cms.CMSSignedData;
import org.bouncycastle.cms.CMSSignedDataGenerator;
import org.bouncycastle.cms.CMSTypedData;
import org.bouncycastle.cms.jcajce.JcaSignerInfoGeneratorBuilder;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.operator.ContentSigner;
import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
import org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder;
import org.bouncycastle.util.Store;
import sun.misc.BASE64Encoder;
import java.util.zip.*;
import org.apache.commons.io.IOUtils;
public class _MT100_Payroll_Ack_Receiver implements Callout
    public void execute(CalloutContext context, List input, List output)
        System.out.println("  _MT100_Payroll_Ack_Receiver execute() called - Start");
        try {
            CalloutMessage cmIn = (CalloutMessage)input.get(0);
            System.out.println(" _MT100_Payroll_Ack_Receiver execute() called -  string that came in as input" +
                               cmIn.toString());
            String s = "";
            if (cmIn.getBody() instanceof String) {
                System.out.println("_MT100_Payroll_Ack_Receiver:cmIn.getBody() is instanceof String[]):");
                s = cmIn.getBodyAsString();
            if (cmIn.getBody() instanceof byte[]) {
                System.out.println("_MT100_Payroll_Ack_Receiver:cmIn.getBody() is instanceof byte[]):");
                byte[] inputasBytes = cmIn.getBodyAsBytes();
                System.out.println("inputasBytes:" + inputasBytes);
                byte[] decompressedByte = decompress(inputasBytes);
                System.out.println("decompressedByte:" + decompressedByte);
                s = decompressedByte.toString();
            System.out.println("_MT100_Payroll_Ack_Receiver:cmIn.getBody()"+ cmIn.getBody().getClass());
            System.out.println("_MT100_Payroll_Ack_Receiver:cmIn.getBody().getName"+ cmIn.getBody().getClass().getName());
            s = s.replaceAll(" xmlns:ns1=\"http://MT100_Rq\"", "");
            System.out.println(" Callout execute() called - replaced MT100_Rq:1" +
                               s);
            s = s.replaceAll("ns1:", "");
            System.out.println(" _MT100_Payroll_Ack_Receiver execute() called - replaced string" +
                               s);
            System.out.print("Inserting into DB");
            boolean isDbInserted = dbInserter(s);
            System.out.print("Inserted into DB" + isDbInserted);
            System.out.println((new StringBuilder()).append("Callout execute() - End Callout  = "));
        } catch (Exception e) {
            // System.out.println("Exception: "+ e.printStackTrace())
            System.out.println((new StringBuilder()).append("Callout execute() - Exception = ").append(e).toString());
            e.printStackTrace();
    public static byte[] decompress(byte[] contentBytes) {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        try {
            IOUtils.copy(new GZIPInputStream(new ByteArrayInputStream(contentBytes)),
                         out);
        } catch (IOException e) {
            throw new RuntimeException(e);
        return out.toByteArray();
    public static boolean dbInserter(String TransactionResponse) {
        try {
            PreparedStatement prepareStatement = null;
            String MT940Output = "";
            Class.forName("oracle.jdbc.driver.OracleDriver");
            String URL =
                "jdbc:oracle:thin:" + MaadenPropertiesConstants.DB_USER + "/" +
                MaadenPropertiesConstants.DB_PASSWORD + "@" +
                MaadenPropertiesConstants.DB_HOSTNAME + ":" +
                MaadenPropertiesConstants.DB_PORT + ":" +
                MaadenPropertiesConstants.DB_SID;
            Connection conn = DriverManager.getConnection(URL);
            System.out.println(conn.isValid(30));
            String StatusCode =
                (TransactionResponse.substring(TransactionResponse.lastIndexOf("<StatusCode>"),
                                               TransactionResponse.indexOf("</StatusCode>"))).replaceFirst("<StatusCode>",
            String StatusDetail =
                TransactionResponse.substring(TransactionResponse.lastIndexOf("<StatusDetail>"),
                                              TransactionResponse.indexOf("</StatusDetail>")).replaceFirst("<StatusDetail>",
            String PayrollMessageRef =
                TransactionResponse.substring(TransactionResponse.lastIndexOf("<PayrollMessageRef>"),
                                              TransactionResponse.indexOf("</PayrollMessageRef>")).replaceFirst("<PayrollMessageRef>",
            String isProcessed = "2";
            if (StatusCode.equalsIgnoreCase("PENDING")) {
                isProcessed = "1";
            System.out.println("StatusCode:" + StatusCode);
            System.out.println("StatusDetail:" + StatusDetail);
            conn.setAutoCommit(true);
            String updateQuery =
                "update xxmac.xxmdn_bank_payroll_summary_tbl set STATUS_CODE='" +
                StatusCode + "' ,STATUS_DESCRIPTION='" + StatusDetail +
                "', IS_PROCESSEDBY_BPM='" + isProcessed +
                "'  where payroll_action_id = '" + PayrollMessageRef + "'";
            System.out.println("Query is :" + updateQuery);
            prepareStatement = conn.prepareStatement(updateQuery);
            prepareStatement.executeUpdate();
            conn.commit();
            //add logic of the task that needs to be done like archiving, manipulating the payload
        } catch (Exception e) {
                e.printStackTrace();
                return false;
        return true;
    private static java.sql.Date getCurrentDate() {
        java.util.Date today = new java.util.Date();
        return new java.sql.Date(today.getTime());
    public String encoder(String input) throws Exception {
        String KEYSTORE_FILE = MaadenPropertiesConstants.keystoreLocation;
        String KEYSTORE_INSTANCE = MaadenPropertiesConstants.KEYSTORE_INSTANCE;
        String KEYSTORE_PWD = MaadenPropertiesConstants.KEYSTORE_PWD;
        String KEYSTORE_ALIAS = MaadenPropertiesConstants.KEYSTORE_Alias;
        System.out.println((new StringBuilder()).append("Callout execute() - input = ").append(input));
        Security.addProvider(new BouncyCastleProvider());
        KeyStore ks = KeyStore.getInstance(KEYSTORE_INSTANCE);
        ks.load(new FileInputStream(KEYSTORE_FILE),
                KEYSTORE_PWD.toCharArray());
        Key key = ks.getKey(KEYSTORE_ALIAS, KEYSTORE_PWD.toCharArray());
        //Sign
        PrivateKey privKey = (PrivateKey)key;
        Signature signature = Signature.getInstance("SHA1WithRSA", "BC");
        signature.initSign(privKey);
        signature.update(input.getBytes());
        //Build CMS
        X509Certificate cert =
            (X509Certificate)ks.getCertificate(KEYSTORE_ALIAS);
        List certList = new ArrayList();
        CMSTypedData msg = new CMSProcessableByteArray(input.getBytes());
        System.out.println("msg: " + msg.toString() + "\n");
        certList.add(cert);
        Store certs = new JcaCertStore(certList);
        CMSSignedDataGenerator gen = new CMSSignedDataGenerator();
        ContentSigner sha1Signer =
            new JcaContentSignerBuilder("SHA1withRSA").setProvider("BC").build(privKey);
        gen.addSignerInfoGenerator(new JcaSignerInfoGeneratorBuilder(new JcaDigestCalculatorProviderBuilder().setProvider("BC").build()).build(sha1Signer,
                                                                                                                                               cert));
        gen.addCertificates(certs);
        System.out.println("gen.getGeneratedDigests().toString(): " +
                           gen.getGeneratedDigests().toString() + "\n");
        CMSSignedData sigData = gen.generate(msg, true);
        BASE64Encoder encoder = new BASE64Encoder();
        String signedContent =
            encoder.encode((byte[])sigData.getSignedContent().getContent());
        System.out.println("Signed content: " + signedContent + "\n");
        String envelopedData = encoder.encode(sigData.getEncoded());
        System.out.println("Enveloped data: " + envelopedData);
        return envelopedData;

Answer 1

Hi ,
I have done integration with an external service where in response , they send me a gz attachment.
I am not able to read it. I want to read it using callout and den process it.Also in below mail trail, you can see my callout code.
Protocol Transport Binding
X-Powered-By=ASP.NET Cache-control=private Content-Length=329 CLIENTIP=Server=Microsoft-IIS/6.0 Date=Thu, 10 Apr 2014 07:15:51 GMT deliverToFabric=TRUE Content-Disposition=attachment; filename=PRREQ10042014101551N36951.95.gz Content-Type=application/octet-stream; Charset=UTF-8 Connection=close
Message Digest
Message Digest
Digest Algorithm
Transport Protocol
HTTP
Transport Protocol Version
HTTP/1.1
Url
security
Transport Headers
X-Powered-By=ASP.NET Cache-control=private Content-Length=329 CLIENTIP=Server=Microsoft-IIS/6.0 Date=Thu, 10 Apr 2014 07:15:51 GMT deliverToFabric=TRUE Content-Disposition=attachment; filename=PRREQ10042014101551N36951.95.gz Content-Type=application/octet-stream; Charset=UTF-8 Connection=close
certificates
certificates
State
ERROR
=============================================================================================================================================
import java.io.ByteArrayInputStream;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.io.FileInputStream;
import java.util.List;
import java.util.Properties;
import oracle.tip.b2b.callout.Callout;
import oracle.tip.b2b.callout.CalloutMessage;
import oracle.tip.b2b.callout.CalloutContext;
import oracle.tip.b2b.callout.exception.*;
import oracle.tip.b2b.domain.B2BParameters;
import oracle.tip.b2b.system.B2BRuntimeException;
import oracle.tip.b2b.system.ErrorKeys;
import org.apache.commons.codec.binary.Base64;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.security.Key;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Security;
import java.security.Signature;
import java.security.cert.X509Certificate;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.Map;
import java.util.UUID;
import javax.crypto.Cipher;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.binary.Hex;
import org.bouncycastle.cert.jcajce.JcaCertStore;
import org.bouncycastle.cms.CMSProcessableByteArray;
import org.bouncycastle.cms.CMSSignedData;
import org.bouncycastle.cms.CMSSignedDataGenerator;
import org.bouncycastle.cms.CMSTypedData;
import org.bouncycastle.cms.jcajce.JcaSignerInfoGeneratorBuilder;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.operator.ContentSigner;
import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
import org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder;
import org.bouncycastle.util.Store;
import sun.misc.BASE64Encoder;
import java.util.zip.*;
import org.apache.commons.io.IOUtils;
public class _MT100_Payroll_Ack_Receiver implements Callout
    public void execute(CalloutContext context, List input, List output)
        System.out.println("  _MT100_Payroll_Ack_Receiver execute() called - Start");
        try {
            CalloutMessage cmIn = (CalloutMessage)input.get(0);
            System.out.println(" _MT100_Payroll_Ack_Receiver execute() called -  string that came in as input" +
                               cmIn.toString());
            String s = "";
            if (cmIn.getBody() instanceof String) {
                System.out.println("_MT100_Payroll_Ack_Receiver:cmIn.getBody() is instanceof String[]):");
                s = cmIn.getBodyAsString();
            if (cmIn.getBody() instanceof byte[]) {
                System.out.println("_MT100_Payroll_Ack_Receiver:cmIn.getBody() is instanceof byte[]):");
                byte[] inputasBytes = cmIn.getBodyAsBytes();
                System.out.println("inputasBytes:" + inputasBytes);
                byte[] decompressedByte = decompress(inputasBytes);
                System.out.println("decompressedByte:" + decompressedByte);
                s = decompressedByte.toString();
            System.out.println("_MT100_Payroll_Ack_Receiver:cmIn.getBody()"+ cmIn.getBody().getClass());
            System.out.println("_MT100_Payroll_Ack_Receiver:cmIn.getBody().getName"+ cmIn.getBody().getClass().getName());
            s = s.replaceAll(" xmlns:ns1=\"http://MT100_Rq\"", "");
            System.out.println(" Callout execute() called - replaced MT100_Rq:1" +
                               s);
            s = s.replaceAll("ns1:", "");
            System.out.println(" _MT100_Payroll_Ack_Receiver execute() called - replaced string" +
                               s);
            System.out.print("Inserting into DB");
            boolean isDbInserted = dbInserter(s);
            System.out.print("Inserted into DB" + isDbInserted);
            System.out.println((new StringBuilder()).append("Callout execute() - End Callout  = "));
        } catch (Exception e) {
            // System.out.println("Exception: "+ e.printStackTrace())
            System.out.println((new StringBuilder()).append("Callout execute() - Exception = ").append(e).toString());
            e.printStackTrace();
    public static byte[] decompress(byte[] contentBytes) {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        try {
            IOUtils.copy(new GZIPInputStream(new ByteArrayInputStream(contentBytes)),
                         out);
        } catch (IOException e) {
            throw new RuntimeException(e);
        return out.toByteArray();
    public static boolean dbInserter(String TransactionResponse) {
        try {
            PreparedStatement prepareStatement = null;
            String MT940Output = "";
            Class.forName("oracle.jdbc.driver.OracleDriver");
            String URL =
                "jdbc:oracle:thin:" + MaadenPropertiesConstants.DB_USER + "/" +
                MaadenPropertiesConstants.DB_PASSWORD + "@" +
                MaadenPropertiesConstants.DB_HOSTNAME + ":" +
                MaadenPropertiesConstants.DB_PORT + ":" +
                MaadenPropertiesConstants.DB_SID;
            Connection conn = DriverManager.getConnection(URL);
            System.out.println(conn.isValid(30));
            String StatusCode =
                (TransactionResponse.substring(TransactionResponse.lastIndexOf("<StatusCode>"),
                                               TransactionResponse.indexOf("</StatusCode>"))).replaceFirst("<StatusCode>",
            String StatusDetail =
                TransactionResponse.substring(TransactionResponse.lastIndexOf("<StatusDetail>"),
                                              TransactionResponse.indexOf("</StatusDetail>")).replaceFirst("<StatusDetail>",
            String PayrollMessageRef =
                TransactionResponse.substring(TransactionResponse.lastIndexOf("<PayrollMessageRef>"),
                                              TransactionResponse.indexOf("</PayrollMessageRef>")).replaceFirst("<PayrollMessageRef>",
            String isProcessed = "2";
            if (StatusCode.equalsIgnoreCase("PENDING")) {
                isProcessed = "1";
            System.out.println("StatusCode:" + StatusCode);
            System.out.println("StatusDetail:" + StatusDetail);
            conn.setAutoCommit(true);
            String updateQuery =
                "update xxmac.xxmdn_bank_payroll_summary_tbl set STATUS_CODE='" +
                StatusCode + "' ,STATUS_DESCRIPTION='" + StatusDetail +
                "', IS_PROCESSEDBY_BPM='" + isProcessed +
                "'  where payroll_action_id = '" + PayrollMessageRef + "'";
            System.out.println("Query is :" + updateQuery);
            prepareStatement = conn.prepareStatement(updateQuery);
            prepareStatement.executeUpdate();
            conn.commit();
            //add logic of the task that needs to be done like archiving, manipulating the payload
        } catch (Exception e) {
                e.printStackTrace();
                return false;
        return true;
    private static java.sql.Date getCurrentDate() {
        java.util.Date today = new java.util.Date();
        return new java.sql.Date(today.getTime());
    public String encoder(String input) throws Exception {
        String KEYSTORE_FILE = MaadenPropertiesConstants.keystoreLocation;
        String KEYSTORE_INSTANCE = MaadenPropertiesConstants.KEYSTORE_INSTANCE;
        String KEYSTORE_PWD = MaadenPropertiesConstants.KEYSTORE_PWD;
        String KEYSTORE_ALIAS = MaadenPropertiesConstants.KEYSTORE_Alias;
        System.out.println((new StringBuilder()).append("Callout execute() - input = ").append(input));
        Security.addProvider(new BouncyCastleProvider());
        KeyStore ks = KeyStore.getInstance(KEYSTORE_INSTANCE);
        ks.load(new FileInputStream(KEYSTORE_FILE),
                KEYSTORE_PWD.toCharArray());
        Key key = ks.getKey(KEYSTORE_ALIAS, KEYSTORE_PWD.toCharArray());
        //Sign
        PrivateKey privKey = (PrivateKey)key;
        Signature signature = Signature.getInstance("SHA1WithRSA", "BC");
        signature.initSign(privKey);
        signature.update(input.getBytes());
        //Build CMS
        X509Certificate cert =
            (X509Certificate)ks.getCertificate(KEYSTORE_ALIAS);
        List certList = new ArrayList();
        CMSTypedData msg = new CMSProcessableByteArray(input.getBytes());
        System.out.println("msg: " + msg.toString() + "\n");
        certList.add(cert);
        Store certs = new JcaCertStore(certList);
        CMSSignedDataGenerator gen = new CMSSignedDataGenerator();
        ContentSigner sha1Signer =
            new JcaContentSignerBuilder("SHA1withRSA").setProvider("BC").build(privKey);
        gen.addSignerInfoGenerator(new JcaSignerInfoGeneratorBuilder(new JcaDigestCalculatorProviderBuilder().setProvider("BC").build()).build(sha1Signer,
                                                                                                                                               cert));
        gen.addCertificates(certs);
        System.out.println("gen.getGeneratedDigests().toString(): " +
                           gen.getGeneratedDigests().toString() + "\n");
        CMSSignedData sigData = gen.generate(msg, true);
        BASE64Encoder encoder = new BASE64Encoder();
        String signedContent =
            encoder.encode((byte[])sigData.getSignedContent().getContent());
        System.out.println("Signed content: " + signedContent + "\n");
        String envelopedData = encoder.encode(sigData.getEncoded());
        System.out.println("Enveloped data: " + envelopedData);
        return envelopedData;