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/*******************************************************************************
* Copyright (c) 2007, 2010 IBM Corporation and others. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors: IBM Corporation - initial API and implementation
******************************************************************************/
package org.eclipse.osgi.internal.signedcontent;
import java.io.IOException;
import java.io.InputStream;
import java.security.cert.*;
import java.util.*;
import org.eclipse.osgi.baseadaptor.bundlefile.BundleEntry;
import org.eclipse.osgi.baseadaptor.bundlefile.BundleFile;
import org.eclipse.osgi.signedcontent.*;
import org.eclipse.osgi.util.NLS;
public class SignedContentImpl implements SignedContent {
final static SignerInfo[] EMPTY_SIGNERINFO = new SignerInfo[0];
// the content which is signed
volatile SignedBundleFile content; // TODO can this be more general?
// the content entry md results used for entry content verification
// keyed by entry path -> {SignerInfo[] infos, byte[][] results)}
private final Map<String, Object> contentMDResults;
private final SignerInfo[] signerInfos;
// map of tsa singers keyed by SignerInfo -> {tsa_SignerInfo, signingTime}
private Map<SignerInfo, Object[]> tsaSignerInfos;
volatile private boolean checkedValid = false;
public SignedContentImpl(SignerInfo[] signerInfos, Map<String, Object> contentMDResults) {
this.signerInfos = signerInfos == null ? EMPTY_SIGNERINFO : signerInfos;
this.contentMDResults = contentMDResults;
}
public SignedContentEntry[] getSignedEntries() {
if (contentMDResults == null)
return new SignedContentEntry[0];
List<SignedContentEntry> results = new ArrayList<SignedContentEntry>(contentMDResults.size());
for (Map.Entry<String, Object> entry : contentMDResults.entrySet()) {
String entryName = entry.getKey();
Object[] mdResult = (Object[]) entry.getValue();
results.add(new SignedContentEntryImpl(entryName, (SignerInfo[]) mdResult[0]));
}
return results.toArray(new SignedContentEntry[results.size()]);
}
public SignedContentEntry getSignedEntry(String name) {
if (contentMDResults == null)
return null;
Object[] mdResult = (Object[]) contentMDResults.get(name);
return mdResult == null ? null : new SignedContentEntryImpl(name, (SignerInfo[]) mdResult[0]);
}
public SignerInfo[] getSignerInfos() {
return signerInfos;
}
public Date getSigningTime(SignerInfo signerInfo) {
if (tsaSignerInfos == null)
return null;
Object[] tsaInfo = tsaSignerInfos.get(signerInfo);
return tsaInfo == null ? null : (Date) tsaInfo[1];
}
public SignerInfo getTSASignerInfo(SignerInfo signerInfo) {
if (tsaSignerInfos == null)
return null;
Object[] tsaInfo = tsaSignerInfos.get(signerInfo);
return tsaInfo == null ? null : (SignerInfo) tsaInfo[0];
}
public boolean isSigned() {
return signerInfos.length > 0;
}
public void checkValidity(SignerInfo signer) throws CertificateExpiredException, CertificateNotYetValidException {
Date signingTime = getSigningTime(signer);
if (checkedValid)
return;
Certificate[] certs = signer.getCertificateChain();
for (int i = 0; i < certs.length; i++) {
if (!(certs[i] instanceof X509Certificate))
continue;
if (signingTime == null)
((X509Certificate) certs[i]).checkValidity();
else
((X509Certificate) certs[i]).checkValidity(signingTime);
}
checkedValid = true;
}
void setContent(SignedBundleFile content) {
this.content = content;
}
void setTSASignerInfos(Map<SignerInfo, Object[]> tsaSignerInfos) {
this.tsaSignerInfos = tsaSignerInfos;
}
void addTSASignerInfo(SignerInfo baseInfo, SignerInfo tsaSignerInfo, Date signingTime) {
// sanity check to make sure the baseInfo is here
if (!containsInfo(baseInfo))
throw new IllegalArgumentException("The baseInfo is not found"); //$NON-NLS-1$
if (tsaSignerInfos == null)
tsaSignerInfos = new HashMap<SignerInfo, Object[]>(signerInfos.length);
tsaSignerInfos.put(baseInfo, new Object[] {tsaSignerInfo, signingTime});
}
Map<String, Object> getContentMDResults() {
return contentMDResults;
}
private boolean containsInfo(SignerInfo signerInfo) {
for (int i = 0; i < signerInfos.length; i++)
if (signerInfo == signerInfos[i])
return true;
return false;
}
InputStream getDigestInputStream(BundleEntry nestedEntry) throws IOException {
if (contentMDResults == null)
return nestedEntry.getInputStream();
Object[] mdResult = (Object[]) contentMDResults.get(nestedEntry.getName());
if (mdResult == null)
return null;
return new DigestedInputStream(nestedEntry, content, (SignerInfo[]) mdResult[0], (byte[][]) mdResult[1], nestedEntry.getSize());
}
public class SignedContentEntryImpl implements SignedContentEntry {
private final String entryName;
private final SignerInfo[] entrySigners;
public SignedContentEntryImpl(String entryName, SignerInfo[] entrySigners) {
this.entryName = entryName;
this.entrySigners = entrySigners == null ? EMPTY_SIGNERINFO : entrySigners;
}
public String getName() {
return entryName;
}
public SignerInfo[] getSignerInfos() {
return entrySigners;
}
public boolean isSigned() {
return entrySigners.length > 0;
}
public void verify() throws IOException, InvalidContentException {
BundleFile currentContent = content;
if (currentContent == null)
throw new InvalidContentException("The content was not set", null); //$NON-NLS-1$
BundleEntry entry = null;
SecurityException exception = null;
try {
entry = currentContent.getEntry(entryName);
} catch (SecurityException e) {
exception = e;
}
if (entry == null)
throw new InvalidContentException(NLS.bind(SignedContentMessages.file_is_removed_from_jar, entryName, currentContent.getBaseFile().toString()), exception);
entry.getBytes();
}
}
}
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