319 lines
11 KiB
Java
319 lines
11 KiB
Java
package eu.siacs.conversations.crypto;
|
|
|
|
import android.app.PendingIntent;
|
|
import android.content.Intent;
|
|
import android.util.Log;
|
|
|
|
import org.openintents.openpgp.OpenPgpError;
|
|
import org.openintents.openpgp.OpenPgpSignatureResult;
|
|
import org.openintents.openpgp.util.OpenPgpApi;
|
|
import org.openintents.openpgp.util.OpenPgpApi.IOpenPgpCallback;
|
|
|
|
import java.io.ByteArrayInputStream;
|
|
import java.io.ByteArrayOutputStream;
|
|
import java.io.FileInputStream;
|
|
import java.io.FileOutputStream;
|
|
import java.io.IOException;
|
|
import java.io.InputStream;
|
|
import java.io.OutputStream;
|
|
|
|
import eu.siacs.conversations.Config;
|
|
import eu.siacs.conversations.R;
|
|
import eu.siacs.conversations.entities.Account;
|
|
import eu.siacs.conversations.entities.Contact;
|
|
import eu.siacs.conversations.entities.Conversation;
|
|
import eu.siacs.conversations.entities.DownloadableFile;
|
|
import eu.siacs.conversations.entities.Message;
|
|
import eu.siacs.conversations.persistance.FileBackend;
|
|
import eu.siacs.conversations.services.XmppConnectionService;
|
|
import eu.siacs.conversations.ui.UiCallback;
|
|
|
|
public class PgpEngine {
|
|
private OpenPgpApi api;
|
|
private XmppConnectionService mXmppConnectionService;
|
|
|
|
public PgpEngine(OpenPgpApi api, XmppConnectionService service) {
|
|
this.api = api;
|
|
this.mXmppConnectionService = service;
|
|
}
|
|
|
|
public void encrypt(final Message message, final UiCallback<Message> callback) {
|
|
Intent params = new Intent();
|
|
params.setAction(OpenPgpApi.ACTION_ENCRYPT);
|
|
final Conversation conversation = message.getConversation();
|
|
if (conversation.getMode() == Conversation.MODE_SINGLE) {
|
|
long[] keys = {
|
|
conversation.getContact().getPgpKeyId(),
|
|
conversation.getAccount().getPgpId()
|
|
};
|
|
params.putExtra(OpenPgpApi.EXTRA_KEY_IDS, keys);
|
|
} else {
|
|
params.putExtra(OpenPgpApi.EXTRA_KEY_IDS, conversation.getMucOptions().getPgpKeyIds());
|
|
}
|
|
|
|
if (!message.needsUploading()) {
|
|
params.putExtra(OpenPgpApi.EXTRA_REQUEST_ASCII_ARMOR, true);
|
|
String body;
|
|
if (message.hasFileOnRemoteHost()) {
|
|
body = message.getFileParams().url.toString();
|
|
} else {
|
|
body = message.getBody();
|
|
}
|
|
InputStream is = new ByteArrayInputStream(body.getBytes());
|
|
final OutputStream os = new ByteArrayOutputStream();
|
|
api.executeApiAsync(params, is, os, new IOpenPgpCallback() {
|
|
|
|
@Override
|
|
public void onReturn(Intent result) {
|
|
switch (result.getIntExtra(OpenPgpApi.RESULT_CODE,
|
|
OpenPgpApi.RESULT_CODE_ERROR)) {
|
|
case OpenPgpApi.RESULT_CODE_SUCCESS:
|
|
try {
|
|
os.flush();
|
|
StringBuilder encryptedMessageBody = new StringBuilder();
|
|
String[] lines = os.toString().split("\n");
|
|
for (int i = 2; i < lines.length - 1; ++i) {
|
|
if (!lines[i].contains("Version")) {
|
|
encryptedMessageBody.append(lines[i].trim());
|
|
}
|
|
}
|
|
message.setEncryptedBody(encryptedMessageBody
|
|
.toString());
|
|
callback.success(message);
|
|
} catch (IOException e) {
|
|
callback.error(R.string.openpgp_error, message);
|
|
}
|
|
|
|
break;
|
|
case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
|
|
callback.userInputRequried((PendingIntent) result
|
|
.getParcelableExtra(OpenPgpApi.RESULT_INTENT),
|
|
message);
|
|
break;
|
|
case OpenPgpApi.RESULT_CODE_ERROR:
|
|
logError(conversation.getAccount(), (OpenPgpError) result.getParcelableExtra(OpenPgpApi.RESULT_ERROR));
|
|
callback.error(R.string.openpgp_error, message);
|
|
break;
|
|
}
|
|
}
|
|
});
|
|
} else {
|
|
try {
|
|
DownloadableFile inputFile = this.mXmppConnectionService
|
|
.getFileBackend().getFile(message, true);
|
|
DownloadableFile outputFile = this.mXmppConnectionService
|
|
.getFileBackend().getFile(message, false);
|
|
outputFile.getParentFile().mkdirs();
|
|
outputFile.createNewFile();
|
|
final InputStream is = new FileInputStream(inputFile);
|
|
final OutputStream os = new FileOutputStream(outputFile);
|
|
api.executeApiAsync(params, is, os, new IOpenPgpCallback() {
|
|
|
|
@Override
|
|
public void onReturn(Intent result) {
|
|
switch (result.getIntExtra(OpenPgpApi.RESULT_CODE,
|
|
OpenPgpApi.RESULT_CODE_ERROR)) {
|
|
case OpenPgpApi.RESULT_CODE_SUCCESS:
|
|
try {
|
|
os.flush();
|
|
} catch (IOException ignored) {
|
|
//ignored
|
|
}
|
|
FileBackend.close(os);
|
|
callback.success(message);
|
|
break;
|
|
case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
|
|
callback.userInputRequried(
|
|
(PendingIntent) result
|
|
.getParcelableExtra(OpenPgpApi.RESULT_INTENT),
|
|
message);
|
|
break;
|
|
case OpenPgpApi.RESULT_CODE_ERROR:
|
|
logError(conversation.getAccount(), (OpenPgpError) result.getParcelableExtra(OpenPgpApi.RESULT_ERROR));
|
|
callback.error(R.string.openpgp_error, message);
|
|
break;
|
|
}
|
|
}
|
|
});
|
|
} catch (final IOException e) {
|
|
callback.error(R.string.openpgp_error, message);
|
|
}
|
|
}
|
|
}
|
|
|
|
public long fetchKeyId(Account account, String status, String signature) {
|
|
if ((signature == null) || (api == null)) {
|
|
return 0;
|
|
}
|
|
if (status == null) {
|
|
status = "";
|
|
}
|
|
final StringBuilder pgpSig = new StringBuilder();
|
|
pgpSig.append("-----BEGIN PGP SIGNED MESSAGE-----");
|
|
pgpSig.append('\n');
|
|
pgpSig.append('\n');
|
|
pgpSig.append(status);
|
|
pgpSig.append('\n');
|
|
pgpSig.append("-----BEGIN PGP SIGNATURE-----");
|
|
pgpSig.append('\n');
|
|
pgpSig.append('\n');
|
|
pgpSig.append(signature.replace("\n", "").trim());
|
|
pgpSig.append('\n');
|
|
pgpSig.append("-----END PGP SIGNATURE-----");
|
|
Intent params = new Intent();
|
|
params.setAction(OpenPgpApi.ACTION_DECRYPT_VERIFY);
|
|
params.putExtra(OpenPgpApi.EXTRA_REQUEST_ASCII_ARMOR, true);
|
|
InputStream is = new ByteArrayInputStream(pgpSig.toString().getBytes());
|
|
ByteArrayOutputStream os = new ByteArrayOutputStream();
|
|
Intent result = api.executeApi(params, is, os);
|
|
switch (result.getIntExtra(OpenPgpApi.RESULT_CODE,
|
|
OpenPgpApi.RESULT_CODE_ERROR)) {
|
|
case OpenPgpApi.RESULT_CODE_SUCCESS:
|
|
OpenPgpSignatureResult sigResult = result
|
|
.getParcelableExtra(OpenPgpApi.RESULT_SIGNATURE);
|
|
if (sigResult != null) {
|
|
return sigResult.getKeyId();
|
|
} else {
|
|
return 0;
|
|
}
|
|
case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
|
|
return 0;
|
|
case OpenPgpApi.RESULT_CODE_ERROR:
|
|
logError(account, (OpenPgpError) result.getParcelableExtra(OpenPgpApi.RESULT_ERROR));
|
|
return 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
public void chooseKey(final Account account, final UiCallback<Account> callback) {
|
|
Intent p = new Intent();
|
|
p.setAction(OpenPgpApi.ACTION_GET_SIGN_KEY_ID);
|
|
api.executeApiAsync(p, null, null, new IOpenPgpCallback() {
|
|
|
|
@Override
|
|
public void onReturn(Intent result) {
|
|
switch (result.getIntExtra(OpenPgpApi.RESULT_CODE, 0)) {
|
|
case OpenPgpApi.RESULT_CODE_SUCCESS:
|
|
callback.success(account);
|
|
return;
|
|
case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
|
|
callback.userInputRequried((PendingIntent) result
|
|
.getParcelableExtra(OpenPgpApi.RESULT_INTENT),
|
|
account);
|
|
return;
|
|
case OpenPgpApi.RESULT_CODE_ERROR:
|
|
logError(account, (OpenPgpError) result.getParcelableExtra(OpenPgpApi.RESULT_ERROR));
|
|
callback.error(R.string.openpgp_error, account);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
public void generateSignature(final Account account, String status,
|
|
final UiCallback<Account> callback) {
|
|
if (account.getPgpId() == 0) {
|
|
return;
|
|
}
|
|
Intent params = new Intent();
|
|
params.setAction(OpenPgpApi.ACTION_CLEARTEXT_SIGN);
|
|
params.putExtra(OpenPgpApi.EXTRA_REQUEST_ASCII_ARMOR, true);
|
|
params.putExtra(OpenPgpApi.EXTRA_SIGN_KEY_ID, account.getPgpId());
|
|
InputStream is = new ByteArrayInputStream(status.getBytes());
|
|
final OutputStream os = new ByteArrayOutputStream();
|
|
Log.d(Config.LOGTAG,account.getJid().toBareJid()+": signing status message \""+status+"\"");
|
|
api.executeApiAsync(params, is, os, new IOpenPgpCallback() {
|
|
|
|
@Override
|
|
public void onReturn(Intent result) {
|
|
switch (result.getIntExtra(OpenPgpApi.RESULT_CODE, 0)) {
|
|
case OpenPgpApi.RESULT_CODE_SUCCESS:
|
|
StringBuilder signatureBuilder = new StringBuilder();
|
|
try {
|
|
os.flush();
|
|
String[] lines = os.toString().split("\n");
|
|
boolean sig = false;
|
|
for (String line : lines) {
|
|
if (sig) {
|
|
if (line.contains("END PGP SIGNATURE")) {
|
|
sig = false;
|
|
} else {
|
|
if (!line.contains("Version")) {
|
|
signatureBuilder.append(line.trim());
|
|
}
|
|
}
|
|
}
|
|
if (line.contains("BEGIN PGP SIGNATURE")) {
|
|
sig = true;
|
|
}
|
|
}
|
|
} catch (IOException e) {
|
|
callback.error(R.string.openpgp_error, account);
|
|
return;
|
|
}
|
|
account.setPgpSignature(signatureBuilder.toString());
|
|
callback.success(account);
|
|
return;
|
|
case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
|
|
callback.userInputRequried((PendingIntent) result
|
|
.getParcelableExtra(OpenPgpApi.RESULT_INTENT),
|
|
account);
|
|
return;
|
|
case OpenPgpApi.RESULT_CODE_ERROR:
|
|
OpenPgpError error = result.getParcelableExtra(OpenPgpApi.RESULT_ERROR);
|
|
if (error != null && "signing subkey not found!".equals(error.getMessage())) {
|
|
callback.error(0,account);
|
|
} else {
|
|
logError(account, error);
|
|
callback.error(R.string.unable_to_connect_to_keychain, null);
|
|
}
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
public void hasKey(final Contact contact, final UiCallback<Contact> callback) {
|
|
Intent params = new Intent();
|
|
params.setAction(OpenPgpApi.ACTION_GET_KEY);
|
|
params.putExtra(OpenPgpApi.EXTRA_KEY_ID, contact.getPgpKeyId());
|
|
api.executeApiAsync(params, null, null, new IOpenPgpCallback() {
|
|
|
|
@Override
|
|
public void onReturn(Intent result) {
|
|
switch (result.getIntExtra(OpenPgpApi.RESULT_CODE, 0)) {
|
|
case OpenPgpApi.RESULT_CODE_SUCCESS:
|
|
callback.success(contact);
|
|
return;
|
|
case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
|
|
callback.userInputRequried((PendingIntent) result
|
|
.getParcelableExtra(OpenPgpApi.RESULT_INTENT),
|
|
contact);
|
|
return;
|
|
case OpenPgpApi.RESULT_CODE_ERROR:
|
|
logError(contact.getAccount(), (OpenPgpError) result.getParcelableExtra(OpenPgpApi.RESULT_ERROR));
|
|
callback.error(R.string.openpgp_error, contact);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
private static void logError(Account account, OpenPgpError error) {
|
|
if (error != null) {
|
|
Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": OpenKeychain error '"+error.getMessage()+"' code="+error.getErrorId());
|
|
} else {
|
|
Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": OpenKeychain error with no message");
|
|
}
|
|
}
|
|
|
|
public PendingIntent getIntentForKey(Contact contact) {
|
|
return getIntentForKey(contact.getPgpKeyId());
|
|
}
|
|
|
|
public PendingIntent getIntentForKey(long pgpKeyId) {
|
|
Intent params = new Intent();
|
|
params.setAction(OpenPgpApi.ACTION_GET_KEY);
|
|
params.putExtra(OpenPgpApi.EXTRA_KEY_ID, pgpKeyId);
|
|
Intent result = api.executeApi(params, null, null);
|
|
return (PendingIntent) result.getParcelableExtra(OpenPgpApi.RESULT_INTENT);
|
|
}
|
|
}
|