1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
/*
* Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.openintents.openpgp.util;
import android.content.Context;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.ParcelFileDescriptor;
import android.util.Log;
import org.openintents.openpgp.IOpenPgpService;
import org.openintents.openpgp.OpenPgpError;
import java.io.InputStream;
import java.io.OutputStream;
public class OpenPgpApi {
IOpenPgpService mService;
Context mContext;
private static final int OPERATION_SIGN = 0;
private static final int OPERATION_ENCRYPT = 1;
private static final int OPERATION_SIGN_ENCRYPT = 2;
private static final int OPERATION_DECRYPT_VERIFY = 3;
private static final int OPERATION_GET_KEY_IDS = 4;
public OpenPgpApi(Context context, IOpenPgpService service) {
this.mContext = context;
this.mService = service;
}
public Bundle sign(InputStream is, final OutputStream os) {
return executeApi(OPERATION_SIGN, new Bundle(), is, os);
}
public Bundle sign(Bundle params, InputStream is, final OutputStream os) {
return executeApi(OPERATION_SIGN, params, is, os);
}
public void sign(Bundle params, InputStream is, final OutputStream os, IOpenPgpCallback callback) {
executeApiAsync(OPERATION_SIGN, params, is, os, callback);
}
public Bundle encrypt(InputStream is, final OutputStream os) {
return executeApi(OPERATION_ENCRYPT, new Bundle(), is, os);
}
public Bundle encrypt(Bundle params, InputStream is, final OutputStream os) {
return executeApi(OPERATION_ENCRYPT, params, is, os);
}
public void encrypt(Bundle params, InputStream is, final OutputStream os, IOpenPgpCallback callback) {
executeApiAsync(OPERATION_ENCRYPT, params, is, os, callback);
}
public Bundle signAndEncrypt(InputStream is, final OutputStream os) {
return executeApi(OPERATION_SIGN_ENCRYPT, new Bundle(), is, os);
}
public Bundle signAndEncrypt(Bundle params, InputStream is, final OutputStream os) {
return executeApi(OPERATION_SIGN_ENCRYPT, params, is, os);
}
public void signAndEncrypt(Bundle params, InputStream is, final OutputStream os, IOpenPgpCallback callback) {
executeApiAsync(OPERATION_SIGN_ENCRYPT, params, is, os, callback);
}
public Bundle decryptAndVerify(InputStream is, final OutputStream os) {
return executeApi(OPERATION_DECRYPT_VERIFY, new Bundle(), is, os);
}
public Bundle decryptAndVerify(Bundle params, InputStream is, final OutputStream os) {
return executeApi(OPERATION_DECRYPT_VERIFY, params, is, os);
}
public void decryptAndVerify(Bundle params, InputStream is, final OutputStream os, IOpenPgpCallback callback) {
executeApiAsync(OPERATION_DECRYPT_VERIFY, params, is, os, callback);
}
public Bundle getKeyIds(Bundle params) {
return executeApi(OPERATION_GET_KEY_IDS, params, null, null);
}
public interface IOpenPgpCallback {
void onReturn(final Bundle result);
}
private class OpenPgpAsyncTask extends AsyncTask<Void, Integer, Bundle> {
int operationId;
Bundle params;
InputStream is;
OutputStream os;
IOpenPgpCallback callback;
private OpenPgpAsyncTask(int operationId, Bundle params, InputStream is, OutputStream os, IOpenPgpCallback callback) {
this.operationId = operationId;
this.params = params;
this.is = is;
this.os = os;
this.callback = callback;
}
@Override
protected Bundle doInBackground(Void... unused) {
return executeApi(operationId, params, is, os);
}
protected void onPostExecute(Bundle result) {
callback.onReturn(result);
}
}
private void executeApiAsync(int operationId, Bundle params, InputStream is, OutputStream os, IOpenPgpCallback callback) {
OpenPgpAsyncTask task = new OpenPgpAsyncTask(operationId, params, is, os, callback);
// don't serialize async tasks!
// http://commonsware.com/blog/2012/04/20/asynctask-threading-regression-confirmed.html
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void[]) null);
} else {
task.execute((Void[]) null);
}
}
private Bundle executeApi(int operationId, Bundle params, InputStream is, OutputStream os) {
try {
params.putInt(OpenPgpConstants.PARAMS_API_VERSION, OpenPgpConstants.API_VERSION);
Bundle result = null;
if (operationId == OPERATION_GET_KEY_IDS) {
result = mService.getKeyIds(params);
return result;
} else {
// send the input and output pfds
ParcelFileDescriptor input = ParcelFileDescriptorUtil.pipeFrom(is,
new ParcelFileDescriptorUtil.IThreadListener() {
@Override
public void onThreadFinished(Thread thread) {
Log.d(OpenPgpConstants.TAG, "Copy to service finished");
}
});
ParcelFileDescriptor output = ParcelFileDescriptorUtil.pipeTo(os,
new ParcelFileDescriptorUtil.IThreadListener() {
@Override
public void onThreadFinished(Thread thread) {
Log.d(OpenPgpConstants.TAG, "Service finished writing!");
}
});
// blocks until result is ready
switch (operationId) {
case OPERATION_SIGN:
result = mService.sign(params, input, output);
break;
case OPERATION_ENCRYPT:
result = mService.encrypt(params, input, output);
break;
case OPERATION_SIGN_ENCRYPT:
result = mService.signAndEncrypt(params, input, output);
break;
case OPERATION_DECRYPT_VERIFY:
result = mService.decryptAndVerify(params, input, output);
break;
}
// close() is required to halt the TransferThread
output.close();
// set class loader to current context to allow unparcelling
// of OpenPgpError and OpenPgpSignatureResult
// http://stackoverflow.com/a/3806769
result.setClassLoader(mContext.getClassLoader());
return result;
}
} catch (Exception e) {
Log.e(OpenPgpConstants.TAG, "Exception", e);
Bundle result = new Bundle();
result.putInt(OpenPgpConstants.RESULT_CODE, OpenPgpConstants.RESULT_CODE_ERROR);
result.putParcelable(OpenPgpConstants.RESULT_ERRORS,
new OpenPgpError(OpenPgpError.CLIENT_SIDE_ERROR, e.getMessage()));
return result;
}
}
}
|
