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
|
/*
* Copyright (C) 2010 The Android Open Source Project
*
* 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 com.example.android.samplesync.authenticator;
import com.example.android.samplesync.Constants;
import com.example.android.samplesync.client.NetworkUtilities;
import android.accounts.AbstractAccountAuthenticator;
import android.accounts.Account;
import android.accounts.AccountAuthenticatorResponse;
import android.accounts.AccountManager;
import android.accounts.NetworkErrorException;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
/**
* This class is an implementation of AbstractAccountAuthenticator for
* authenticating accounts in the com.example.android.samplesync domain. The
* interesting thing that this class demonstrates is the use of authTokens as
* part of the authentication process. In the account setup UI, the user enters
* their username and password. But for our subsequent calls off to the service
* for syncing, we want to use an authtoken instead - so we're not continually
* sending the password over the wire. getAuthToken() will be called when
* SyncAdapter calls AccountManager.blockingGetAuthToken(). When we get called,
* we need to return the appropriate authToken for the specified account. If we
* already have an authToken stored in the account, we return that authToken. If
* we don't, but we do have a username and password, then we'll attempt to talk
* to the sample service to fetch an authToken. If that fails (or we didn't have
* a username/password), then we need to prompt the user - so we create an
* AuthenticatorActivity intent and return that. That will display the dialog
* that prompts the user for their login information.
*/
class Authenticator extends AbstractAccountAuthenticator {
/** The tag used to log to adb console. **/
private static final String TAG = "Authenticator";
// Authentication Service context
private final Context mContext;
public Authenticator(Context context) {
super(context);
mContext = context;
}
@Override
public Bundle addAccount(AccountAuthenticatorResponse response, String accountType,
String authTokenType, String[] requiredFeatures, Bundle options) {
Log.v(TAG, "addAccount()");
final Intent intent = new Intent(mContext, AuthenticatorActivity.class);
intent.putExtra(AccountManager.KEY_ACCOUNT_AUTHENTICATOR_RESPONSE, response);
final Bundle bundle = new Bundle();
bundle.putParcelable(AccountManager.KEY_INTENT, intent);
return bundle;
}
@Override
public Bundle confirmCredentials(
AccountAuthenticatorResponse response, Account account, Bundle options) {
Log.v(TAG, "confirmCredentials()");
return null;
}
@Override
public Bundle editProperties(AccountAuthenticatorResponse response, String accountType) {
Log.v(TAG, "editProperties()");
throw new UnsupportedOperationException();
}
@Override
public Bundle getAuthToken(AccountAuthenticatorResponse response, Account account,
String authTokenType, Bundle loginOptions) throws NetworkErrorException {
Log.v(TAG, "getAuthToken()");
// If the caller requested an authToken type we don't support, then
// return an error
if (!authTokenType.equals(Constants.AUTHTOKEN_TYPE)) {
final Bundle result = new Bundle();
result.putString(AccountManager.KEY_ERROR_MESSAGE, "invalid authTokenType");
return result;
}
// Extract the username and password from the Account Manager, and ask
// the server for an appropriate AuthToken.
final AccountManager am = AccountManager.get(mContext);
final String password = am.getPassword(account);
if (password != null) {
final String authToken = NetworkUtilities.authenticate(account.name, password);
if (!TextUtils.isEmpty(authToken)) {
final Bundle result = new Bundle();
result.putString(AccountManager.KEY_ACCOUNT_NAME, account.name);
result.putString(AccountManager.KEY_ACCOUNT_TYPE, Constants.ACCOUNT_TYPE);
result.putString(AccountManager.KEY_AUTHTOKEN, authToken);
return result;
}
}
// If we get here, then we couldn't access the user's password - so we
// need to re-prompt them for their credentials. We do that by creating
// an intent to display our AuthenticatorActivity panel.
final Intent intent = new Intent(mContext, AuthenticatorActivity.class);
intent.putExtra(AuthenticatorActivity.PARAM_USERNAME, account.name);
intent.putExtra(AuthenticatorActivity.PARAM_AUTHTOKEN_TYPE, authTokenType);
intent.putExtra(AccountManager.KEY_ACCOUNT_AUTHENTICATOR_RESPONSE, response);
final Bundle bundle = new Bundle();
bundle.putParcelable(AccountManager.KEY_INTENT, intent);
return bundle;
}
@Override
public String getAuthTokenLabel(String authTokenType) {
// null means we don't support multiple authToken types
Log.v(TAG, "getAuthTokenLabel()");
return null;
}
@Override
public Bundle hasFeatures(
AccountAuthenticatorResponse response, Account account, String[] features) {
// This call is used to query whether the Authenticator supports
// specific features. We don't expect to get called, so we always
// return false (no) for any queries.
Log.v(TAG, "hasFeatures()");
final Bundle result = new Bundle();
result.putBoolean(AccountManager.KEY_BOOLEAN_RESULT, false);
return result;
}
@Override
public Bundle updateCredentials(AccountAuthenticatorResponse response, Account account,
String authTokenType, Bundle loginOptions) {
Log.v(TAG, "updateCredentials()");
return null;
}
}
|
