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package de.blinkt.openvpn.core;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.io.StringReader;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.Principal;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import javax.security.auth.x500.X500Principal;
import org.spongycastle.util.io.pem.PemObject;
import org.spongycastle.util.io.pem.PemReader;
import android.text.TextUtils;
import de.blinkt.openvpn.VpnProfile;
public class X509Utils {
public static Certificate getCertificateFromFile(String certfilename) throws FileNotFoundException, CertificateException {
CertificateFactory certFact = CertificateFactory.getInstance("X.509");
InputStream inStream;
if(certfilename.startsWith(VpnProfile.INLINE_TAG))
inStream = new ByteArrayInputStream(certfilename.replace(VpnProfile.INLINE_TAG,"").getBytes());
else
inStream = new FileInputStream(certfilename);
return certFact.generateCertificate(inStream);
}
public static PemObject readPemObjectFromFile (String keyfilename) throws CertificateException, IOException {
Reader inStream;
if(keyfilename.startsWith(VpnProfile.INLINE_TAG))
inStream = new StringReader(keyfilename.replace(VpnProfile.INLINE_TAG,""));
else
inStream = new FileReader(new File(keyfilename));
PemReader pr = new PemReader(inStream);
PemObject r = pr.readPemObject();
pr.close();
return r;
}
public static String getCertificateFriendlyName (String filename) {
if(!TextUtils.isEmpty(filename)) {
try {
X509Certificate cert = (X509Certificate) getCertificateFromFile(filename);
String friendly = cert.getSubjectDN().getName();
return friendly;
} catch (Exception e) {
OpenVPN.logError("Could not read certificate" + e.getLocalizedMessage());
}
}
return "Could not read/parse certificate";
}
}
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