com.alvexcore.share.jscript.JSShareExtensionRegistry.java Source code

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Here is the source code for com.alvexcore.share.jscript.JSShareExtensionRegistry.java

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/**
 * Copyright  2012 ITD Systems
 *
 * This file is part of Alvex
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.alvexcore.share.jscript;

import com.alvexcore.share.ExtensionUpdateInfo;
import com.alvexcore.share.ShareExtensionRegistry;

import java.security.PublicKey;
import java.security.Signature;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.codec.binary.Base64;
import org.mozilla.javascript.Scriptable;
import org.springframework.beans.factory.annotation.Required;
import org.springframework.extensions.webscripts.processor.BaseProcessorExtension;

/**
 * Root scope object implementation for Share
 * 
 * 
 */
public class JSShareExtensionRegistry extends BaseProcessorExtension {
    private ShareExtensionRegistry registry;

    @Required
    public void setShareExtensionRegistry(ShareExtensionRegistry registry) {
        this.registry = registry;
    }

    // wrap methods
    public Object[] getInstalledExtensions() {
        return registry.getInstalledExtensions().toArray();
    }

    public String getEdition() {
        return registry.getEdition();
    }

    public Map<String, String> convertToMap(Scriptable obj) {
        Object[] propIds = obj.getIds();
        Map<String, String> result = new HashMap<String, String>(propIds.length);
        for (int i = 0; i < propIds.length; i++) {
            Object propId = propIds[i];
            if (propId instanceof String) {
                Object val = obj.get((String) propId, obj);
                result.put((String) propId, (String) val);
            }
        }

        return result;
    }

    public ExtensionUpdateInfo checkForUpdates(String extensionId, String shareId, Scriptable shareHashes,
            String shareVersion, String repoId, Scriptable repoHashes, String repoVersion, String licenseId)
            throws Exception {
        return registry.checkForUpdates(extensionId, shareId, convertToMap(shareHashes), shareVersion, repoId,
                convertToMap(repoHashes), repoVersion, licenseId);
    }

    @SuppressWarnings("serial")
    public String removeSignature(String data) {
        if (data == null)
            return null;
        int idx = data.indexOf("\n");
        if (idx <= 20)
            return null;
        String s = data.substring(0, idx);
        if (!s.startsWith("SIGNATURE:"))
            return null;
        s = s.substring(10);
        Signature sig;
        try {
            sig = Signature.getInstance("SHA1withRSA");
            sig.initVerify(new PublicKey() {

                @Override
                public String getAlgorithm() {
                    return "RSA";
                }

                @Override
                public String getFormat() {
                    return "X.509";
                }

                @Override
                public byte[] getEncoded() {
                    return new byte[] { 48, -126, 1, 34, 48, 13, 6, 9, 42, -122, 72, -122, -9, 13, 1, 1, 1, 5, 0, 3,
                            -126, 1, 15, 0, 48, -126, 1, 10, 2, -126, 1, 1, 0, -115, 117, -12, -114, -121, -128, 76,
                            99, -114, -37, 107, -44, 108, 36, 38, 99, 13, -93, -73, -62, 44, 10, 120, -22, -31, -25,
                            -109, 45, 24, -47, 59, -87, -39, -29, -35, -96, 13, -117, 31, -98, 107, 80, -104, -72,
                            5, -32, 79, -115, 59, -87, 109, -121, 104, 36, -14, 123, -113, 87, -50, 40, -52, -59,
                            -52, -7, -13, -34, 17, -29, -39, 63, -62, -44, 51, 68, -98, -115, -13, 10, -7, -101, 81,
                            -72, 81, 91, -94, 91, -94, 6, 65, 84, 35, -121, 14, -103, 38, 6, 59, 115, -110, 4, -63,
                            -89, -22, 27, 126, -96, -32, 97, 105, -108, 14, -23, -62, -89, -41, 30, -126, -114, 121,
                            17, 125, 18, 124, -114, 0, -13, 85, -11, 92, 87, -16, 3, 30, 23, -126, -33, 122, 126,
                            -72, -95, 29, 73, -24, -34, -27, -41, 109, -77, -108, -34, 91, -36, -3, 112, 13, 30,
                            111, 9, -105, 7, 8, -70, 95, -128, -82, -13, -4, 127, -58, 68, -114, 89, 69, 101, -106,
                            -123, -36, -90, -110, -44, 45, 25, 107, 52, 6, 69, -35, 89, 7, -59, 96, 4, 97, 29, 24,
                            -50, -59, -40, 104, 70, 68, -28, 77, 94, -57, -38, 91, -99, 37, -89, 105, -126, 52, 80,
                            111, 107, -69, 22, 39, -70, -5, 87, -33, -77, -79, -64, 76, -12, -58, -37, 56, 102, 17,
                            59, 11, -73, -68, -96, -108, -47, 13, -113, -77, 60, 88, -128, 19, -42, 12, 49, 89, 7,
                            -11, -11, -87, 37, 2, 3, 1, 0, 1 };
                }
            });
            String d = data.substring(idx + 1);
            sig.update(d.getBytes());
            if (sig.verify(Base64.decodeBase64(s)))
                return d;
            else
                return null;
        } catch (Exception e) {
            return null;
        }
    }

}