1/*
2 * Copyright (C) 2014 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#define LOG_TAG "FingerprintHal"
17
18#include <errno.h>
19#include <malloc.h>
20#include <string.h>
21#include <cutils/log.h>
22#include <hardware/hardware.h>
23#include <hardware/fingerprint.h>
24
25static int fingerprint_close(hw_device_t *dev)
26{
27    if (dev) {
28        free(dev);
29        return 0;
30    } else {
31        return -1;
32    }
33}
34
35
36static uint64_t fingerprint_pre_enroll(struct fingerprint_device __unused *dev) {
37    return FINGERPRINT_ERROR;
38}
39
40static int fingerprint_enroll(struct fingerprint_device __unused *dev,
41                                const hw_auth_token_t __unused *hat,
42                                uint32_t __unused gid,
43                                uint32_t __unused timeout_sec) {
44    return FINGERPRINT_ERROR;
45}
46
47static uint64_t fingerprint_get_auth_id(struct fingerprint_device __unused *dev) {
48    return FINGERPRINT_ERROR;
49}
50
51static int fingerprint_cancel(struct fingerprint_device __unused *dev) {
52    return FINGERPRINT_ERROR;
53}
54
55static int fingerprint_remove(struct fingerprint_device __unused *dev,
56                                uint32_t __unused gid, uint32_t __unused fid) {
57    return FINGERPRINT_ERROR;
58}
59
60static int fingerprint_set_active_group(struct fingerprint_device __unused *dev,
61                                        uint32_t __unused gid, const char __unused *store_path) {
62    return FINGERPRINT_ERROR;
63}
64
65static int fingerprint_authenticate(struct fingerprint_device __unused *dev,
66                                    uint64_t __unused operation_id, __unused uint32_t gid) {
67    return FINGERPRINT_ERROR;
68}
69
70static int set_notify_callback(struct fingerprint_device *dev,
71                                fingerprint_notify_t notify) {
72    /* Decorate with locks */
73    dev->notify = notify;
74    return FINGERPRINT_ERROR;
75}
76
77static int fingerprint_open(const hw_module_t* module, const char __unused *id,
78                            hw_device_t** device)
79{
80    if (device == NULL) {
81        ALOGE("NULL device on open");
82        return -EINVAL;
83    }
84
85    fingerprint_device_t *dev = malloc(sizeof(fingerprint_device_t));
86    memset(dev, 0, sizeof(fingerprint_device_t));
87
88    dev->common.tag = HARDWARE_DEVICE_TAG;
89    dev->common.version = FINGERPRINT_MODULE_API_VERSION_2_0;
90    dev->common.module = (struct hw_module_t*) module;
91    dev->common.close = fingerprint_close;
92
93    dev->pre_enroll = fingerprint_pre_enroll;
94    dev->enroll = fingerprint_enroll;
95    dev->get_authenticator_id = fingerprint_get_auth_id;
96    dev->cancel = fingerprint_cancel;
97    dev->remove = fingerprint_remove;
98    dev->set_active_group = fingerprint_set_active_group;
99    dev->authenticate = fingerprint_authenticate;
100    dev->set_notify = set_notify_callback;
101    dev->notify = NULL;
102
103    *device = (hw_device_t*) dev;
104    return 0;
105}
106
107static struct hw_module_methods_t fingerprint_module_methods = {
108    .open = fingerprint_open,
109};
110
111fingerprint_module_t HAL_MODULE_INFO_SYM = {
112    .common = {
113        .tag                = HARDWARE_MODULE_TAG,
114        .module_api_version = FINGERPRINT_MODULE_API_VERSION_2_0,
115        .hal_api_version    = HARDWARE_HAL_API_VERSION,
116        .id                 = FINGERPRINT_HARDWARE_MODULE_ID,
117        .name               = "Demo Fingerprint HAL",
118        .author             = "The Android Open Source Project",
119        .methods            = &fingerprint_module_methods,
120    },
121};
122