unimore/oop-2020-steffo-cleaver
unimore/oop-2020-steffo-cleaver
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Start stitch job

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Steffo 2020-01-08 14:09:13 +01:00
parent 7f274721ba
commit 66fe4f733d
9 changed files with 62 additions and 130 deletions
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4
src/eu/steffo/cleaver/logic/job/ChopJob.java
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@ -18,8 +18,6 @@ import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.*;
import java.nio.file.Path;
import java.nio.file.Paths;
/**
* A {@link Job} that converts regular files into <i>chopped</i> (*.chp + *.cXX) files.
@ -103,7 +101,7 @@ public class ChopJob extends Job {
}
if(compressConfig instanceof DeflateConfig) {
outputStream = new CleaverDeflaterOutputStream(outputStream);
outputStream = new CleaverDeflateOutputStream(outputStream);
}
if(cryptConfig instanceof PasswordConfig) {

37
src/eu/steffo/cleaver/logic/job/StitchJob.java
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@ -3,7 +3,7 @@ package eu.steffo.cleaver.logic.job;
import eu.steffo.cleaver.errors.ChpFileError;
import eu.steffo.cleaver.errors.ProgrammingError;
import eu.steffo.cleaver.logic.config.*;
import eu.steffo.cleaver.logic.stream.input.CryptInputStream;
import eu.steffo.cleaver.logic.stream.input.*;
import eu.steffo.cleaver.logic.progress.ErrorProgress;
import eu.steffo.cleaver.logic.progress.FinishedProgress;
import eu.steffo.cleaver.logic.progress.Progress;
@ -123,13 +123,36 @@ public class StitchJob extends Job {
}
/**
* Read a {@link Document} and set the {@link IConfig}, {@link PasswordConfig} and {@link DeflateConfig} of this job accordingly.
* @param doc The {@link Document} to be read.
* @param cryptKey The encryption key to use in the {@link PasswordConfig}.
* @throws ChpFileError If there's an error while parsing the *.chp file.
* Read a {@link Element} and create a {@link ICleaverInputStream} based on it.
* @param element The {@link Element} to be read.
* @param cryptKey The encryption key to use in case a {@link CleaverCryptInputStream} is created.
* @throws ChpFileError If there's an error while parsing the node.
*/
protected void parseChp(Document doc, String cryptKey) throws ChpFileError {
//TODO
protected ICleaverInputStream parseNode(Element element, String cryptKey) throws ChpFileError {
String name = element.getTagName();
ICleaverInputStream result;
if(name.equals("Crypt")) {
//TODO
}
else if(name.equals("Deflate")) {
//TODO
}
else if(name.equals("Fork")) {
//TODO
}
else if(name.equals("Simple")) {
//TODO
}
else if(name.equals("Split")) {
//TODO
}
else {
throw new ChpFileError("Unknown tag: " + name);
}
return result;
}
@Override

11
src/eu/steffo/cleaver/logic/stream/input/CleaverCryptInputStream.java Normal file
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@ -0,0 +1,11 @@
package eu.steffo.cleaver.logic.stream.input;
import java.io.FilterInputStream;
import java.io.InputStream;
public class CleaverCryptInputStream extends FilterInputStream implements ICleaverInputStream {
protected CleaverCryptInputStream(InputStream in) {
super(in);
}
}

4
src/eu/steffo/cleaver/logic/stream/input/CleaverDeflateInputStream.java Normal file
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@ -0,0 +1,4 @@
package eu.steffo.cleaver.logic.stream.input;
public class CleaverDeflateInputStream implements ICleaverInputStream {
}

4
src/eu/steffo/cleaver/logic/stream/input/CleaverForkFileInputStream.java Normal file
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@ -0,0 +1,4 @@
package eu.steffo.cleaver.logic.stream.input;
public class CleaverForkFileInputStream implements ICleaverInputStream {
}

4
src/eu/steffo/cleaver/logic/stream/input/CleaverSimpleFileInputStream.java Normal file
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@ -0,0 +1,4 @@
package eu.steffo.cleaver.logic.stream.input;
public class CleaverSimpleFileInputStream implements ICleaverInputStream {
}

2
src/eu/steffo/cleaver/logic/stream/input/CleaverSplitFileInputStream.java
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@ -4,7 +4,7 @@ import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
public class CleaverSplitFileInputStream extends InputStream {
public class CleaverSplitFileInputStream extends InputStream implements ICleaverInputStream {
private final String fileBaseName;
private long currentByteCount;
private long maximumByteCount;

112
src/eu/steffo/cleaver/logic/stream/input/CryptInputStream.java
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@ -1,112 +0,0 @@
package eu.steffo.cleaver.logic.stream.input;
import javax.crypto.Cipher;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.SecretKeySpec;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
public class CryptInputStream extends FilterInputStream {
private Cipher cipher;
/**
* @return The algorithm used for the encryption.
*/
public String getAlgorithm() {
return "AES";
}
/**
* @return The mode of operation used for the encryption.
*/
public String getModeOfOperation() {
return "CFB8";
}
/**
* @return The padding used for the encryption.
*/
public String getPadding() {
return "PKCS5Padding";
}
/**
* @return The secret key algorithm used in the generation of the final key.
*/
public String getKeyAlgorithm() {
return "PBKDF2WithHmacSHA1";
}
/**
* @return The full transformation string as required by {@link Cipher#getInstance(String)}.
*/
public String getTransformationString() {
return String.format("%s/%s/%s", getAlgorithm(), getModeOfOperation(), getPadding());
}
public CryptInputStream(InputStream in, String key) throws InvalidKeyException {
super(in);
//Setup the cipher object
try {
cipher = Cipher.getInstance(getTransformationString());
} catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
//Should never happen, as it's predefined
e.printStackTrace();
return;
}
//Create the salt
byte[] salt = new byte[8];
SecureRandom secureRandom = new SecureRandom();
secureRandom.nextBytes(salt);
//Create the KeySpec
//Using the recommended 65536 as iteration count
KeySpec spec = new PBEKeySpec(key.toCharArray(), salt, 65536, 256);
SecretKeyFactory factory;
try {
factory = SecretKeyFactory.getInstance(getKeyAlgorithm());
} catch (NoSuchAlgorithmException e) {
//Should never happen, as it's predefined
e.printStackTrace();
return;
}
//Create the pbkdf secret key
SecretKey pbkdf;
try {
pbkdf = factory.generateSecret(spec);
} catch (InvalidKeySpecException e) {
//Should never happen, as it's predefined
e.printStackTrace();
return;
}
//"Convert" the secret key to a AES secret key
SecretKey aes = new SecretKeySpec(pbkdf.getEncoded(), getAlgorithm());
//Init the cipher instance
cipher.init(Cipher.DECRYPT_MODE, aes);
}
@Override
public int read() throws IOException {
int encryptedInt = super.read();
byte[] encryptedByte = new byte[1];
encryptedByte[0] = (byte)encryptedInt;
byte[] decryptedByte = cipher.update(encryptedByte);
return decryptedByte[0];
}
}

14
src/eu/steffo/cleaver/logic/stream/output/CleaverDeflaterOutputStream.java → src/eu/steffo/cleaver/logic/stream/output/CleaverDeflateOutputStream.java
View file

@ -8,12 +8,12 @@ import java.io.OutputStream;
import java.util.zip.Deflater;
import java.util.zip.DeflaterOutputStream;
public class CleaverDeflaterOutputStream extends DeflaterOutputStream implements ICleaverOutputStream {
public class CleaverDeflateOutputStream extends DeflaterOutputStream implements ICleaverOutputStream {
/**
* Construct a new CleaverCompressOutputStream and ensure the passed {@link OutputStream} implements {@link ICleaverOutputStream}.
* @see DeflaterOutputStream#DeflaterOutputStream(OutputStream, Deflater, int, boolean)
*/
public CleaverDeflaterOutputStream(OutputStream out, Deflater def, int size, boolean syncFlush) {
public CleaverDeflateOutputStream(OutputStream out, Deflater def, int size, boolean syncFlush) {
super(out, def, size, syncFlush);
if(!(out instanceof ICleaverOutputStream)) {
throw new IllegalArgumentException("The OutputStream passed to the CleaverCompressOutputStream must implement ICleaverOutputStream.");
@ -24,7 +24,7 @@ public class CleaverDeflaterOutputStream extends DeflaterOutputStream implements
* Construct a new CleaverCompressOutputStream and ensure the passed {@link OutputStream} implements {@link ICleaverOutputStream}.
* @see DeflaterOutputStream#DeflaterOutputStream(OutputStream, Deflater, int)
*/
public CleaverDeflaterOutputStream(OutputStream out, Deflater def, int size) {
public CleaverDeflateOutputStream(OutputStream out, Deflater def, int size) {
super(out, def, size);
if(!(out instanceof ICleaverOutputStream)) {
throw new IllegalArgumentException("The OutputStream passed to the CleaverCompressOutputStream must implement ICleaverOutputStream.");
@ -35,7 +35,7 @@ public class CleaverDeflaterOutputStream extends DeflaterOutputStream implements
* Construct a new CleaverCompressOutputStream and ensure the passed {@link OutputStream} implements {@link ICleaverOutputStream}.
* @see DeflaterOutputStream#DeflaterOutputStream(OutputStream, Deflater, boolean)
*/
public CleaverDeflaterOutputStream(OutputStream out, Deflater def, boolean syncFlush) {
public CleaverDeflateOutputStream(OutputStream out, Deflater def, boolean syncFlush) {
super(out, def, syncFlush);
if(!(out instanceof ICleaverOutputStream)) {
throw new IllegalArgumentException("The OutputStream passed to the CleaverCompressOutputStream must implement ICleaverOutputStream.");
@ -46,7 +46,7 @@ public class CleaverDeflaterOutputStream extends DeflaterOutputStream implements
* Construct a new CleaverCompressOutputStream and ensure the passed {@link OutputStream} implements {@link ICleaverOutputStream}.
* @see DeflaterOutputStream#DeflaterOutputStream(OutputStream, Deflater)
*/
public CleaverDeflaterOutputStream(OutputStream out, Deflater def) {
public CleaverDeflateOutputStream(OutputStream out, Deflater def) {
super(out, def);
if(!(out instanceof ICleaverOutputStream)) {
throw new IllegalArgumentException("The OutputStream passed to the CleaverCompressOutputStream must implement ICleaverOutputStream.");
@ -57,7 +57,7 @@ public class CleaverDeflaterOutputStream extends DeflaterOutputStream implements
* Construct a new CleaverCompressOutputStream and ensure the passed {@link OutputStream} implements {@link ICleaverOutputStream}.
* @see DeflaterOutputStream#DeflaterOutputStream(OutputStream, boolean)
*/
public CleaverDeflaterOutputStream(OutputStream out, boolean syncFlush) {
public CleaverDeflateOutputStream(OutputStream out, boolean syncFlush) {
super(out, syncFlush);
if(!(out instanceof ICleaverOutputStream)) {
throw new IllegalArgumentException("The OutputStream passed to the CleaverCompressOutputStream must implement ICleaverOutputStream.");
@ -68,7 +68,7 @@ public class CleaverDeflaterOutputStream extends DeflaterOutputStream implements
* Construct a new CleaverCompressOutputStream and ensure the passed {@link OutputStream} implements {@link ICleaverOutputStream}.
* @see DeflaterOutputStream#DeflaterOutputStream(OutputStream)
*/
public CleaverDeflaterOutputStream(OutputStream out) {
public CleaverDeflateOutputStream(OutputStream out) {
super(out);
if(!(out instanceof ICleaverOutputStream)) {
throw new IllegalArgumentException("The OutputStream passed to the CleaverCompressOutputStream must implement ICleaverOutputStream.");