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Code Issues Releases Wiki Activity

Implement inline-detach for 3 different types of input

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This commit is contained in:
Paul Schaub 2022-06-19 16:56:32 +02:00
parent 2d60650cc6
commit 5375cd454f
2 changed files with 180 additions and 10 deletions
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85
pgpainless-sop/src/main/java/org/pgpainless/sop/InlineDetachImpl.java
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@ -10,12 +10,20 @@ import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.bouncycastle.bcpg.ArmoredInputStream;
import org.bouncycastle.bcpg.ArmoredOutputStream;
import org.bouncycastle.openpgp.PGPCompressedData;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPLiteralData;
import org.bouncycastle.openpgp.PGPObjectFactory;
import org.bouncycastle.openpgp.PGPOnePassSignatureList;
import org.bouncycastle.openpgp.PGPSignature;
import org.bouncycastle.openpgp.PGPSignatureList;
import org.bouncycastle.util.io.Streams;
import org.pgpainless.decryption_verification.OpenPgpInputStream;
import org.pgpainless.decryption_verification.cleartext_signatures.ClearsignedMessageUtil;
import org.pgpainless.exception.WrongConsumingMethodException;
import org.pgpainless.implementation.ImplementationFactory;
import org.pgpainless.util.ArmoredOutputStreamFactory;
import sop.ReadyWithResult;
import sop.Signatures;
@ -43,13 +51,80 @@ public class InlineDetachImpl implements InlineDetach {
public Signatures writeTo(OutputStream messageOutputStream)
throws SOPGPException.NoSignature, IOException {
PGPSignatureList signatures;
try {
signatures = ClearsignedMessageUtil.detachSignaturesFromInbandClearsignedMessage(messageInputStream, messageOutputStream);
} catch (WrongConsumingMethodException e) {
throw new IOException(e);
PGPSignatureList signatures = null;
OpenPgpInputStream pgpIn = new OpenPgpInputStream(messageInputStream);
if (pgpIn.isNonOpenPgp()) {
throw new SOPGPException.BadData("Data appears to be non-OpenPGP.");
}
// handle ASCII armor
if (pgpIn.isAsciiArmored()) {
ArmoredInputStream armorIn = new ArmoredInputStream(pgpIn);
// Handle cleartext signature framework
if (armorIn.isClearText()) {
try {
signatures = ClearsignedMessageUtil.detachSignaturesFromInbandClearsignedMessage(armorIn, messageOutputStream);
if (signatures == null) {
throw new SOPGPException.BadData("Data did not contain OpenPGP signatures.");
}
} catch (WrongConsumingMethodException e) {
throw new SOPGPException.BadData(e);
}
}
// else just dearmor
pgpIn = new OpenPgpInputStream(armorIn);
}
// if data was not using cleartext signatures framework
if (signatures == null) {
if (!pgpIn.isBinaryOpenPgp()) {
throw new SOPGPException.BadData("Data was containing ASCII armored non-OpenPGP data.");
}
// handle binary OpenPGP data
PGPObjectFactory objectFactory = ImplementationFactory.getInstance().getPGPObjectFactory(pgpIn);
Object next;
while ((next = objectFactory.nextObject()) != null) {
if (next instanceof PGPOnePassSignatureList) {
// skip over ops
continue;
}
if (next instanceof PGPLiteralData) {
// write out contents of literal data packet
PGPLiteralData literalData = (PGPLiteralData) next;
InputStream literalIn = literalData.getDataStream();
Streams.pipeAll(literalIn, messageOutputStream);
literalIn.close();
continue;
}
if (next instanceof PGPCompressedData) {
// decompress compressed data
PGPCompressedData compressedData = (PGPCompressedData) next;
try {
objectFactory = ImplementationFactory.getInstance().getPGPObjectFactory(compressedData.getDataStream());
} catch (PGPException e) {
throw new SOPGPException.BadData("Cannot decompress PGPCompressedData", e);
}
continue;
}
if (next instanceof PGPSignatureList) {
signatures = (PGPSignatureList) next;
}
}
}
if (signatures == null) {
throw new SOPGPException.BadData("Data did not contain OpenPGP signatures.");
}
// write out signatures
if (armor) {
ArmoredOutputStream armorOut = ArmoredOutputStreamFactory.get(sigOut);
for (PGPSignature signature : signatures) {