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Jim Millera34dc462015-05-07 18:52:53 -07001/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "fingerprintd"
18
19#include <binder/IServiceManager.h>
20#include <hardware/hardware.h>
21#include <hardware/fingerprint.h>
22#include <hardware/hw_auth_token.h>
23#include <keystore/IKeystoreService.h>
24#include <keystore/keystore.h> // for error codes
25#include <utils/Log.h>
26
27#include "FingerprintDaemonProxy.h"
28
29namespace android {
30
31FingerprintDaemonProxy* FingerprintDaemonProxy::sInstance = NULL;
32
33// Supported fingerprint HAL version
34static const uint16_t kVersion = HARDWARE_MODULE_API_VERSION(2, 0);
35
36FingerprintDaemonProxy::FingerprintDaemonProxy() : mModule(NULL), mDevice(NULL), mCallback(NULL) {
37
38}
39
40FingerprintDaemonProxy::~FingerprintDaemonProxy() {
41 closeHal();
42}
43
Sasha Levitskiy53afac02015-06-09 16:47:09 -070044void FingerprintDaemonProxy::hal_notify_callback(const fingerprint_msg_t *msg) {
Jim Millera34dc462015-05-07 18:52:53 -070045 FingerprintDaemonProxy* instance = FingerprintDaemonProxy::getInstance();
46 const sp<IFingerprintDaemonCallback> callback = instance->mCallback;
47 if (callback == NULL) {
48 ALOGE("Invalid callback object");
49 return;
50 }
51 const int64_t device = (int64_t) instance->mDevice;
Sasha Levitskiy53afac02015-06-09 16:47:09 -070052 switch (msg->type) {
Jim Millera34dc462015-05-07 18:52:53 -070053 case FINGERPRINT_ERROR:
Sasha Levitskiy53afac02015-06-09 16:47:09 -070054 ALOGD("onError(%d)", msg->data.error);
55 callback->onError(device, msg->data.error);
Jim Millera34dc462015-05-07 18:52:53 -070056 break;
57 case FINGERPRINT_ACQUIRED:
Sasha Levitskiy53afac02015-06-09 16:47:09 -070058 ALOGD("onAcquired(%d)", msg->data.acquired.acquired_info);
59 callback->onAcquired(device, msg->data.acquired.acquired_info);
Jim Millera34dc462015-05-07 18:52:53 -070060 break;
61 case FINGERPRINT_AUTHENTICATED:
62 ALOGD("onAuthenticated(fid=%d, gid=%d)",
Sasha Levitskiy53afac02015-06-09 16:47:09 -070063 msg->data.authenticated.finger.fid,
64 msg->data.authenticated.finger.gid);
65 if (msg->data.authenticated.finger.fid != 0) {
66 const uint8_t* hat = reinterpret_cast<const uint8_t *>(&msg->data.authenticated.hat);
67 instance->notifyKeystore(hat, sizeof(msg->data.authenticated.hat));
Jim Millera34dc462015-05-07 18:52:53 -070068 }
69 callback->onAuthenticated(device,
Sasha Levitskiy53afac02015-06-09 16:47:09 -070070 msg->data.authenticated.finger.fid,
71 msg->data.authenticated.finger.gid);
Jim Millera34dc462015-05-07 18:52:53 -070072 break;
73 case FINGERPRINT_TEMPLATE_ENROLLING:
74 ALOGD("onEnrollResult(fid=%d, gid=%d, rem=%d)",
Sasha Levitskiy53afac02015-06-09 16:47:09 -070075 msg->data.enroll.finger.fid,
76 msg->data.enroll.finger.gid,
77 msg->data.enroll.samples_remaining);
Jim Millera34dc462015-05-07 18:52:53 -070078 callback->onEnrollResult(device,
Sasha Levitskiy53afac02015-06-09 16:47:09 -070079 msg->data.enroll.finger.fid,
80 msg->data.enroll.finger.gid,
81 msg->data.enroll.samples_remaining);
Jim Millera34dc462015-05-07 18:52:53 -070082 break;
83 case FINGERPRINT_TEMPLATE_REMOVED:
84 ALOGD("onRemove(fid=%d, gid=%d)",
Sasha Levitskiy53afac02015-06-09 16:47:09 -070085 msg->data.removed.finger.fid,
86 msg->data.removed.finger.gid);
Jim Millera34dc462015-05-07 18:52:53 -070087 callback->onRemoved(device,
Sasha Levitskiy53afac02015-06-09 16:47:09 -070088 msg->data.removed.finger.fid,
89 msg->data.removed.finger.gid);
Jim Millera34dc462015-05-07 18:52:53 -070090 break;
91 default:
Sasha Levitskiy53afac02015-06-09 16:47:09 -070092 ALOGE("invalid msg type: %d", msg->type);
Jim Millera34dc462015-05-07 18:52:53 -070093 return;
94 }
95}
96
Sasha Levitskiy53afac02015-06-09 16:47:09 -070097void FingerprintDaemonProxy::notifyKeystore(const uint8_t *auth_token, const size_t auth_token_length) {
Jim Millera34dc462015-05-07 18:52:53 -070098 if (auth_token != NULL && auth_token_length > 0) {
99 // TODO: cache service?
100 sp < IServiceManager > sm = defaultServiceManager();
101 sp < IBinder > binder = sm->getService(String16("android.security.keystore"));
102 sp < IKeystoreService > service = interface_cast < IKeystoreService > (binder);
103 if (service != NULL) {
104 status_t ret = service->addAuthToken(auth_token, auth_token_length);
105 if (ret != ResponseCode::NO_ERROR) {
106 ALOGE("Falure sending auth token to KeyStore: %d", ret);
107 }
108 } else {
109 ALOGE("Unable to communicate with KeyStore");
110 }
111 }
112}
113
114void FingerprintDaemonProxy::init(const sp<IFingerprintDaemonCallback>& callback) {
115 if (mCallback != NULL && IInterface::asBinder(callback) != IInterface::asBinder(mCallback)) {
116 IInterface::asBinder(mCallback)->unlinkToDeath(this);
117 }
118 IInterface::asBinder(callback)->linkToDeath(this);
119 mCallback = callback;
120}
121
122int32_t FingerprintDaemonProxy::enroll(const uint8_t* token, ssize_t tokenSize, int32_t groupId,
123 int32_t timeout) {
124 ALOG(LOG_VERBOSE, LOG_TAG, "enroll(gid=%d, timeout=%d)\n", groupId, timeout);
125 if (tokenSize != sizeof(hw_auth_token_t) ) {
Jim Miller72ffc3c2015-06-05 12:25:17 -0700126 ALOG(LOG_VERBOSE, LOG_TAG, "enroll() : invalid token size %zu\n", tokenSize);
Jim Millera34dc462015-05-07 18:52:53 -0700127 return -1;
128 }
129 const hw_auth_token_t* authToken = reinterpret_cast<const hw_auth_token_t*>(token);
130 return mDevice->enroll(mDevice, authToken, groupId, timeout);
131}
132
133uint64_t FingerprintDaemonProxy::preEnroll() {
134 return mDevice->pre_enroll(mDevice);
135}
136
137int32_t FingerprintDaemonProxy::stopEnrollment() {
138 ALOG(LOG_VERBOSE, LOG_TAG, "stopEnrollment()\n");
139 return mDevice->cancel(mDevice);
140}
141
142int32_t FingerprintDaemonProxy::authenticate(uint64_t sessionId, uint32_t groupId) {
143 ALOG(LOG_VERBOSE, LOG_TAG, "authenticate(sid=%" PRId64 ", gid=%d)\n", sessionId, groupId);
144 return mDevice->authenticate(mDevice, sessionId, groupId);
145}
146
147int32_t FingerprintDaemonProxy::stopAuthentication() {
148 ALOG(LOG_VERBOSE, LOG_TAG, "stopAuthentication()\n");
149 return mDevice->cancel(mDevice);
150}
151
152int32_t FingerprintDaemonProxy::remove(int32_t fingerId, int32_t groupId) {
153 ALOG(LOG_VERBOSE, LOG_TAG, "remove(fid=%d, gid=%d)\n", fingerId, groupId);
Sasha Levitskiy53afac02015-06-09 16:47:09 -0700154 return mDevice->remove(mDevice, groupId, fingerId);
Jim Millera34dc462015-05-07 18:52:53 -0700155}
156
157uint64_t FingerprintDaemonProxy::getAuthenticatorId() {
158 return mDevice->get_authenticator_id(mDevice);
159}
160
161int32_t FingerprintDaemonProxy::setActiveGroup(int32_t groupId, const uint8_t* path,
162 ssize_t pathlen) {
163 if (pathlen >= PATH_MAX) {
164 ALOGE("Path name is too long\n");
165 return -1;
166 }
167 // Convert to null-terminated string
168 char path_name[PATH_MAX];
169 memcpy(path_name, path, pathlen);
170 path_name[pathlen] = '\0';
Jim Miller72ffc3c2015-06-05 12:25:17 -0700171 ALOG(LOG_VERBOSE, LOG_TAG, "setActiveGroup(%d, %s, %zu)", groupId, path_name, pathlen);
Jim Millera34dc462015-05-07 18:52:53 -0700172 return mDevice->set_active_group(mDevice, groupId, path_name);
173 return -1;
174}
175
176int64_t FingerprintDaemonProxy::openHal() {
177 ALOG(LOG_VERBOSE, LOG_TAG, "nativeOpenHal()\n");
178 int err;
179 const hw_module_t *hw_module = NULL;
180 if (0 != (err = hw_get_module(FINGERPRINT_HARDWARE_MODULE_ID, &hw_module))) {
181 ALOGE("Can't open fingerprint HW Module, error: %d", err);
182 return 0;
183 }
184 if (NULL == hw_module) {
185 ALOGE("No valid fingerprint module");
186 return 0;
187 }
188
189 mModule = reinterpret_cast<const fingerprint_module_t*>(hw_module);
190
191 if (mModule->common.methods->open == NULL) {
192 ALOGE("No valid open method");
193 return 0;
194 }
195
196 hw_device_t *device = NULL;
197
198 if (0 != (err = mModule->common.methods->open(hw_module, NULL, &device))) {
199 ALOGE("Can't open fingerprint methods, error: %d", err);
200 return 0;
201 }
202
203 if (kVersion != device->version) {
204 ALOGE("Wrong fp version. Expected %d, got %d", kVersion, device->version);
205 // return 0; // FIXME
206 }
207
208 mDevice = reinterpret_cast<fingerprint_device_t*>(device);
209 err = mDevice->set_notify(mDevice, hal_notify_callback);
210 if (err < 0) {
211 ALOGE("Failed in call to set_notify(), err=%d", err);
212 return 0;
213 }
214
215 // Sanity check - remove
216 if (mDevice->notify != hal_notify_callback) {
217 ALOGE("NOTIFY not set properly: %p != %p", mDevice->notify, hal_notify_callback);
218 }
219
220 ALOG(LOG_VERBOSE, LOG_TAG, "fingerprint HAL successfully initialized");
221 return reinterpret_cast<int64_t>(mDevice); // This is just a handle
222}
223
224int32_t FingerprintDaemonProxy::closeHal() {
225 return -ENOSYS; // TODO
226}
227
228void FingerprintDaemonProxy::binderDied(const wp<IBinder>& who) {
229 ALOGD("binder died");
230 if (IInterface::asBinder(mCallback) == who) {
231 mCallback = NULL;
232 }
233}
234
235}