通过用javascript设计的中服务器探针调用java jar方法

Question

我正在设置一个环境，我将 4 个参数(加密文件、密钥文件、传递阶段和默认文件名(传递给 .Jar 并解密文件。 我已经通过Bouncycastle API实现了它，它在eclipse IDE上运行良好。

现在我必须在我的服务现在中间服务器中设置它。

因此，javascript 探测器应该调用这个 jar 文件并将参数作为字符串传递，加密文件(驻留在中间服务器上(将被解密。

我尝试在 servicenow 中创建一个中间服务器脚本和一个探测器，但它返回一个错误，指出找不到该方法(实际上在那里(

类里面 ..JAR

package pgpDecrypt;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.NoSuchProviderException;
import java.security.SecureRandom;
import java.security.Security;
import java.util.Iterator;
import org.bouncycastle.bcpg.ArmoredOutputStream;
import org.bouncycastle.bcpg.CompressionAlgorithmTags;
import org.bouncycastle.bcpg.SymmetricKeyAlgorithmTags;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.openpgp.PGPCompressedData;
import org.bouncycastle.openpgp.PGPCompressedDataGenerator;
import org.bouncycastle.openpgp.PGPEncryptedDataGenerator;
import org.bouncycastle.openpgp.PGPEncryptedDataList;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPLiteralData;
import org.bouncycastle.openpgp.PGPOnePassSignatureList;
import org.bouncycastle.openpgp.PGPPrivateKey;
import org.bouncycastle.openpgp.PGPPublicKey;
import org.bouncycastle.openpgp.PGPPublicKeyEncryptedData;
import org.bouncycastle.openpgp.PGPSecretKeyRingCollection;
import org.bouncycastle.openpgp.PGPUtil;
import org.bouncycastle.openpgp.jcajce.JcaPGPObjectFactory;
import org.bouncycastle.openpgp.operator.jcajce.JcaKeyFingerprintCalculator;
import org.bouncycastle.openpgp.operator.jcajce.JcePGPDataEncryptorBuilder;
import org.bouncycastle.openpgp.operator.jcajce.JcePublicKeyDataDecryptorFactoryBuilder;
import org.bouncycastle.openpgp.operator.jcajce.JcePublicKeyKeyEncryptionMethodGenerator;
import org.bouncycastle.util.io.Streams;
public class PGPDecryption {
public static void decryptFile(String inputFileName, String keyFileName, char[] passwd, String defaultFileName)
throws IOException, NoSuchProviderException {
Security.addProvider(new BouncyCastleProvider());
InputStream in = new BufferedInputStream(new FileInputStream(inputFileName));
InputStream keyIn = new BufferedInputStream(new FileInputStream(keyFileName));
decryptFiles(in, keyIn, passwd, defaultFileName);
System.out.print("Default File Name : "+ defaultFileName);
keyIn.close();
in.close();
}
/**
* decrypt the passed in message stream
*/
public static void decryptFiles(InputStream in, InputStream keyIn, char[] passwd, String defaultFileName)
throws IOException, NoSuchProviderException {
in = PGPUtil.getDecoderStream(in);
try {
JcaPGPObjectFactory pgpF = new JcaPGPObjectFactory(in);
PGPEncryptedDataList enc;
Object o = pgpF.nextObject();
//
// the first object might be a PGP marker packet.
//
if (o instanceof PGPEncryptedDataList) {
enc = (PGPEncryptedDataList) o;
} else {
enc = (PGPEncryptedDataList) pgpF.nextObject();
}
//
// find the secret key
//
Iterator it = enc.getEncryptedDataObjects();
PGPPrivateKey sKey = null;
PGPPublicKeyEncryptedData pbe = null;
PGPSecretKeyRingCollection pgpSec = new PGPSecretKeyRingCollection(PGPUtil.getDecoderStream(keyIn),
new JcaKeyFingerprintCalculator());
while (sKey == null && it.hasNext()) {
pbe = (PGPPublicKeyEncryptedData) it.next();
sKey = PGPUtilE.findSecretKey(pgpSec, pbe.getKeyID(), passwd);
}
if (sKey == null) {
throw new IllegalArgumentException("secret key for message not found.");
}
InputStream clear = pbe
.getDataStream(new JcePublicKeyDataDecryptorFactoryBuilder().setProvider("BC").build(sKey));
JcaPGPObjectFactory plainFact = new JcaPGPObjectFactory(clear);
PGPCompressedData cData = (PGPCompressedData) plainFact.nextObject();
InputStream compressedStream = new BufferedInputStream(cData.getDataStream());
JcaPGPObjectFactory pgpFact = new JcaPGPObjectFactory(compressedStream);
Object message = pgpFact.nextObject();
if (message instanceof PGPLiteralData) {
PGPLiteralData ld = (PGPLiteralData) message;
String outFileName = ld.getFileName();
if (outFileName.length() == 0) {
outFileName = defaultFileName;
}
InputStream unc = ld.getInputStream();
OutputStream fOut = new BufferedOutputStream(new FileOutputStream(outFileName));
Streams.pipeAll(unc, fOut);
fOut.close();
} else if (message instanceof PGPOnePassSignatureList) {
throw new PGPException("encrypted message contains a signed message - not literal data.");
} else {
throw new PGPException("message is not a simple encrypted file - type unknown.");
}
if (pbe.isIntegrityProtected()) {
if (!pbe.verify()) {
System.err.println("message failed integrity check");
} else {
System.err.println("message integrity check passed");
}
} else {
System.err.println("no message integrity check");
}
} catch (PGPException e) {
System.err.println(e);
if (e.getUnderlyingException() != null) {
e.getUnderlyingException().printStackTrace();
}
}
}
private static void encryptFile(String outputFileName, String inputFileName, String encKeyFileName, boolean armor,
boolean withIntegrityCheck) throws IOException, NoSuchProviderException, PGPException {
OutputStream out = new BufferedOutputStream(new FileOutputStream(outputFileName));
PGPPublicKey encKey = PGPUtilE.readPublicKey(encKeyFileName);
encryptFile(out, inputFileName, encKey, armor, withIntegrityCheck);
out.close();
}
private static void encryptFile(OutputStream out, String fileName, PGPPublicKey encKey, boolean armor,
boolean withIntegrityCheck) throws IOException, NoSuchProviderException {
if (armor) {
out = new ArmoredOutputStream(out);
}
try {
PGPEncryptedDataGenerator cPk = new PGPEncryptedDataGenerator(
new JcePGPDataEncryptorBuilder(SymmetricKeyAlgorithmTags.CAST5).setWithIntegrityPacket(withIntegrityCheck)
.setSecureRandom(new SecureRandom()).setProvider("BC"));
cPk.addMethod(new JcePublicKeyKeyEncryptionMethodGenerator(encKey).setProvider("BC"));
OutputStream cOut = cPk.open(out, new byte[1 << 16]);
PGPCompressedDataGenerator comData = new PGPCompressedDataGenerator(CompressionAlgorithmTags.ZIP);
PGPUtil.writeFileToLiteralData(comData.open(cOut), PGPLiteralData.BINARY, new File(fileName),
new byte[1 << 16]);
comData.close();
cOut.close();
if (armor) {
out.close();
}
} catch (PGPException e) {
System.err.println(e);
if (e.getUnderlyingException() != null) {
e.getUnderlyingException().printStackTrace();
}
}
}
public static void main(String[] args) throws Exception {
Security.addProvider(new BouncyCastleProvider());
if (args.length == 0) {
System.err.println(
"usage: PGPDecryption -d file [secretKeyFile passPhrase|pubKeyFile]");
return;
}
if (args[0].equals("-e")) {
if (args[1].equals("-a") || args[1].equals("-ai") || args[1].equals("-ia")) {
encryptFile(args[2] + ".asc", args[2], args[3], true, (args[1].indexOf('i') > 0));
} else if (args[1].equals("-i")) {
encryptFile(args[2] + ".bpg", args[2], args[3], false, true);
} else {
encryptFile(args[1] + ".bpg", args[1], args[2], false, false);
}
} else if (args[0].equals("-d")) {
decryptFile(args[1], args[2], args[3].toCharArray(), new File(args[1]).getName() + ".out");
} else {
System.err.println(
"usage: PGPDecryption -d|-e [-a|ai] file [secretKeyFile passPhrase|pubKeyFile]");
}
}
}

脚本包括：

var ProcessPGP = Class.create();
ProcessPGP.prototype = {
initialize: function() {
this.Pgp = Packages.pgpDecrypt.PGPDecryption.decryptFile;
this.inputFile = probe.getParameter("inputFile");
this.secretFile = probe.getParameter("secretFile");
this.passPhase = probe.getParameter("passPhase");
this.defaultName = probe.getParameter("defaultName");
},
execute: function() {
var pgpObj = new this.Pgp(this.inputFile, this.secretFile, this.passPhase, this.defaultName);
},
type: ProcessPGP
};

探针：

var jspr = new JavascriptProbe('ANIRUDGU-68LCS_Dev1');
jspr.setName('TestPGPDemo5');
jspr.setJavascript('var pdf = new ProcessPGP(); res = pdf.execute();');
jspr.addParameter("inputFile", "C:UsersanirudguDesktopPGPTestKeyTestRun2.pgp");
jspr.addParameter("secretFile", "C:UsersanirudguDesktopPGPTestKeyanirudguciscocomprivate.asc");
jspr.addParameter("passPhase", "Hello");
jspr.addParameter("defaultName", "FilefromProbe");
jspr.create();

但是我面临以下提到的错误：

08/22/19 23:21:58 (097) Worker-Standard:JavascriptProbe-ce4567ebdb9b330045bb9b81ca961910 WARNING *** WARNING *** org.mozilla.javascript.EvaluatorException: Can't find method pgpDecrypt.PGPDecryption.decryptFile(java.lang.String,java.lang.String,java.lang.String,java.lang.String). (script_include:ProcessPGP; line 32)
EvaluatorException(var pdf = new ProcessPGP(); res = pdf.execute();)

Answer 1

方法decryptFile是静态的。new关键字只能用于创建实例。 因此，请尝试：

var pgpObj = this.Pgp(this.inputFile, this.secretFile, this.passPhase, this.defaultName);

Answer 2

尝试从以下位置删除"new"：

jspr.setJavascript('var pdf =newProcessPGP((; res = pdf.execute((;'(;