net.instantcom.mm7.MM7Context.java Source code

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Here is the source code for net.instantcom.mm7.MM7Context.java

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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2007-2014 InstantCom Ltd. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://raw.github.com/vnesek/instantcom-mm7/master/LICENSE.txt
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at appropriate location.
 */

package net.instantcom.mm7;

import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.lang.reflect.Constructor;

import org.jdom2.output.Format;
import org.jvnet.mimepull.MIMEConfig;

/**
 * Configuration for reading and writing MM7 messages. You can configure
 * parameters for serializing and deserializing and few recovery options.
 *
 * @author vnesek
 */
public class MM7Context {

    private static String[] BASE64_OUTPUT_STREAM_CLASSES = { "org.apache.commons.codec.binary.Base64OutputStream",
            "com.sun.xml.internal.messaging.saaj.packaging.mime.util.BASE64EncoderStream" };

    public Class<? extends OutputStream> getBase64OutputStream() {
        return base64OutputStream;
    }

    public Format getJdomFormat() {
        if (jdomFormat == null) {
            jdomFormat = Format.getPrettyFormat();
        }
        return jdomFormat;
    }

    public MIMEConfig getMimePullConfig() {
        if (mimePullConfig == null) {
            mimePullConfig = new MIMEConfig();
        }
        return mimePullConfig;
    }

    public String getMm7Namespace() {
        return mm7Namespace;
    }

    public String getMm7Version() {
        return mm7Version;
    }

    public String getPassword() {
        return password;
    }

    public String getUserAgent() {
        return userAgent;
    }

    public String getUsername() {
        return username;
    }

    public boolean isUseFirstContentFoundIfHrefIsInvalid() {
        return useFirstContentFoundIfHrefIsInvalid;
    }

    public OutputStream newBase64OutputStream(OutputStream out) {
        if (base64OutputStream == null) {
            initializeBase64OutputStream();
        }
        try {
            return base64OutputStreamConstructor.newInstance(out);
        } catch (NullPointerException e) {
            throw new IllegalStateException("no BASE64 output stream configured");
        } catch (Exception e) {
            throw new IllegalStateException("failed to construct BASE64 output stream", e);
        }
    }

    public void setBase64OutputStream(Class<? extends OutputStream> base64OutputStream) {
        if (base64OutputStream == null) {
            this.base64OutputStream = null;
            this.base64OutputStreamConstructor = null;
        }
        try {
            Constructor<? extends OutputStream> c = base64OutputStream.getConstructor(OutputStream.class);
            { // Let's try the constructor out ...
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                OutputStream s = c.newInstance(baos);
                s.write("test123".getBytes("iso-8859-1"));
                s.close();
                String encoded = baos.toString("iso-8859-1");
                if (!encoded.equals("dGVzdDEyMw==")) {
                    throw new IllegalArgumentException(
                            base64OutputStream.getName() + " incorrectly encodes BASE64 data");
                }
            }
            this.base64OutputStream = base64OutputStream;
            this.base64OutputStreamConstructor = c;
        } catch (NoSuchMethodException e) {
            throw new IllegalArgumentException(base64OutputStream.getName()
                    + " must expose public constructor taking java.io.OutputStream argument");
        } catch (IllegalArgumentException e) {
            throw e;
        } catch (Exception e) {
            throw new IllegalArgumentException(
                    base64OutputStream.getName() + " can't be used for BASE64 encoding: " + e);
        }
    }

    public void setJdomFormat(Format jdomFormat) {
        this.jdomFormat = jdomFormat;
    }

    public void setMimePullConfig(MIMEConfig mimePullConfig) {
        this.mimePullConfig = mimePullConfig;
    }

    public void setMm7Namespace(String namespace) {
        this.mm7Namespace = namespace;
    }

    public void setMm7Version(String mm7version) {
        this.mm7Version = mm7version;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public void setUseFirstContentFoundIfHrefIsInvalid(boolean useFirstIfContentHrefIsInvalid) {
        this.useFirstContentFoundIfHrefIsInvalid = useFirstIfContentHrefIsInvalid;
    }

    public void setUserAgent(String userAgent) {
        this.userAgent = userAgent;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    @SuppressWarnings("unchecked")
    private void initializeBase64OutputStream() {
        for (String className : BASE64_OUTPUT_STREAM_CLASSES) {
            try {
                Class<?> clazz = Class.forName(className);
                setBase64OutputStream((Class<? extends OutputStream>) clazz);
                break;
            } catch (Exception e) {
            }
        }
    }

    private Class<? extends OutputStream> base64OutputStream;
    private Constructor<? extends OutputStream> base64OutputStreamConstructor;
    private Format jdomFormat;
    private MIMEConfig mimePullConfig;
    private String mm7Namespace = About.MM7_NAMESPACE;
    private String mm7Version = About.MM7_VERSION;
    private String password;
    private boolean useFirstContentFoundIfHrefIsInvalid = true;
    private String userAgent = "InstantCom-MM7/" + About.VERSION;
    private String username;
}