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 <stdint.h>
21 #include <string.h>
22
23 #include <log/log.h>
24
25 #include <hardware/fingerprint.h>
26 #include <hardware/hardware.h>
27
fingerprint_close(hw_device_t * dev)28 static int fingerprint_close(hw_device_t *dev)
29 {
30 if (dev) {
31 free(dev);
32 return 0;
33 } else {
34 return -1;
35 }
36 }
37
38
fingerprint_pre_enroll(struct fingerprint_device __unused * dev)39 static uint64_t fingerprint_pre_enroll(struct fingerprint_device __unused *dev) {
40 return FINGERPRINT_ERROR;
41 }
42
fingerprint_enroll(struct fingerprint_device __unused * dev,const hw_auth_token_t __unused * hat,uint32_t __unused gid,uint32_t __unused timeout_sec)43 static int fingerprint_enroll(struct fingerprint_device __unused *dev,
44 const hw_auth_token_t __unused *hat,
45 uint32_t __unused gid,
46 uint32_t __unused timeout_sec) {
47 return FINGERPRINT_ERROR;
48 }
49
fingerprint_get_auth_id(struct fingerprint_device __unused * dev)50 static uint64_t fingerprint_get_auth_id(struct fingerprint_device __unused *dev) {
51 return FINGERPRINT_ERROR;
52 }
53
fingerprint_cancel(struct fingerprint_device __unused * dev)54 static int fingerprint_cancel(struct fingerprint_device __unused *dev) {
55 return FINGERPRINT_ERROR;
56 }
57
fingerprint_remove(struct fingerprint_device __unused * dev,uint32_t __unused gid,uint32_t __unused fid)58 static int fingerprint_remove(struct fingerprint_device __unused *dev,
59 uint32_t __unused gid, uint32_t __unused fid) {
60 return FINGERPRINT_ERROR;
61 }
62
fingerprint_set_active_group(struct fingerprint_device __unused * dev,uint32_t __unused gid,const char __unused * store_path)63 static int fingerprint_set_active_group(struct fingerprint_device __unused *dev,
64 uint32_t __unused gid, const char __unused *store_path) {
65 return FINGERPRINT_ERROR;
66 }
67
fingerprint_authenticate(struct fingerprint_device __unused * dev,uint64_t __unused operation_id,__unused uint32_t gid)68 static int fingerprint_authenticate(struct fingerprint_device __unused *dev,
69 uint64_t __unused operation_id, __unused uint32_t gid) {
70 return FINGERPRINT_ERROR;
71 }
72
set_notify_callback(struct fingerprint_device * dev,fingerprint_notify_t notify)73 static int set_notify_callback(struct fingerprint_device *dev,
74 fingerprint_notify_t notify) {
75 /* Decorate with locks */
76 dev->notify = notify;
77 return FINGERPRINT_ERROR;
78 }
79
fingerprint_open(const hw_module_t * module,const char __unused * id,hw_device_t ** device)80 static int fingerprint_open(const hw_module_t* module, const char __unused *id,
81 hw_device_t** device)
82 {
83 if (device == NULL) {
84 ALOGE("NULL device on open");
85 return -EINVAL;
86 }
87
88 fingerprint_device_t *dev = malloc(sizeof(fingerprint_device_t));
89 memset(dev, 0, sizeof(fingerprint_device_t));
90
91 dev->common.tag = HARDWARE_DEVICE_TAG;
92 dev->common.version = FINGERPRINT_MODULE_API_VERSION_2_0;
93 dev->common.module = (struct hw_module_t*) module;
94 dev->common.close = fingerprint_close;
95
96 dev->pre_enroll = fingerprint_pre_enroll;
97 dev->enroll = fingerprint_enroll;
98 dev->get_authenticator_id = fingerprint_get_auth_id;
99 dev->cancel = fingerprint_cancel;
100 dev->remove = fingerprint_remove;
101 dev->set_active_group = fingerprint_set_active_group;
102 dev->authenticate = fingerprint_authenticate;
103 dev->set_notify = set_notify_callback;
104 dev->notify = NULL;
105
106 *device = (hw_device_t*) dev;
107 return 0;
108 }
109
110 static struct hw_module_methods_t fingerprint_module_methods = {
111 .open = fingerprint_open,
112 };
113
114 fingerprint_module_t HAL_MODULE_INFO_SYM = {
115 .common = {
116 .tag = HARDWARE_MODULE_TAG,
117 .module_api_version = FINGERPRINT_MODULE_API_VERSION_2_0,
118 .hal_api_version = HARDWARE_HAL_API_VERSION,
119 .id = FINGERPRINT_HARDWARE_MODULE_ID,
120 .name = "Demo Fingerprint HAL",
121 .author = "The Android Open Source Project",
122 .methods = &fingerprint_module_methods,
123 },
124 };
125