127 lines
4.7 KiB
C++
127 lines
4.7 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <hardware/hardware.h>
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#include <hardware/gatekeeper.h>
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#define LOG_TAG "GoldfishGatekeeper"
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#include <cutils/log.h>
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#include <string.h>
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#include <errno.h>
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#include <stdlib.h>
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#include "SoftGateKeeper.h"
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#include "SoftGateKeeperDevice.h"
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using goldfish::SoftGateKeeperDevice;
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struct goldfish_gatekeeper_device {
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gatekeeper_device device;
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SoftGateKeeperDevice *s_gatekeeper;
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};
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static goldfish_gatekeeper_device s_device;
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static int enroll(const struct gatekeeper_device *dev __unused, uint32_t uid,
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const uint8_t *current_password_handle, uint32_t current_password_handle_length,
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const uint8_t *current_password, uint32_t current_password_length,
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const uint8_t *desired_password, uint32_t desired_password_length,
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uint8_t **enrolled_password_handle, uint32_t *enrolled_password_handle_length) {
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SoftGateKeeperDevice *s_gatekeeper = ((goldfish_gatekeeper_device*)(dev))->s_gatekeeper;
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ALOGE("called %s with gate keeper %p device %p\n", __func__, s_gatekeeper, dev);
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if (s_gatekeeper == nullptr) {
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abort();
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return -EINVAL;
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}
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return s_gatekeeper->enroll(uid,
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current_password_handle, current_password_handle_length,
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current_password, current_password_length,
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desired_password, desired_password_length,
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enrolled_password_handle, enrolled_password_handle_length);
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}
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static int verify(const struct gatekeeper_device *dev __unused, uint32_t uid, uint64_t challenge,
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const uint8_t *enrolled_password_handle, uint32_t enrolled_password_handle_length,
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const uint8_t *provided_password, uint32_t provided_password_length,
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uint8_t **auth_token, uint32_t *auth_token_length, bool *request_reenroll) {
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SoftGateKeeperDevice *s_gatekeeper = ((goldfish_gatekeeper_device*)(dev))->s_gatekeeper;
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ALOGE("called %s with gate keeper %p device %p\n", __func__, s_gatekeeper, dev);
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if (s_gatekeeper == nullptr) return -EINVAL;
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return s_gatekeeper->verify(uid, challenge,
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enrolled_password_handle, enrolled_password_handle_length,
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provided_password, provided_password_length,
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auth_token, auth_token_length, request_reenroll);
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}
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static int close_device(hw_device_t* dev __unused) {
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SoftGateKeeperDevice *s_gatekeeper = ((goldfish_gatekeeper_device*)(dev))->s_gatekeeper;
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if (s_gatekeeper == nullptr) return 0;
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delete s_gatekeeper;
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s_gatekeeper = nullptr;
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ALOGE("called %s with gate keeper %p device %p\n", __func__, s_gatekeeper, dev);
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return 0;
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}
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static int goldfish_gatekeeper_open(const hw_module_t *module, const char *name,
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hw_device_t **device) {
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if (strcmp(name, HARDWARE_GATEKEEPER) != 0) {
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abort();
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return -EINVAL;
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}
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memset(&s_device, 0, sizeof(s_device));
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SoftGateKeeperDevice *s_gatekeeper = new SoftGateKeeperDevice();
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if (s_gatekeeper == nullptr) return -ENOMEM;
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s_device.s_gatekeeper = s_gatekeeper;
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s_device.device.common.tag = HARDWARE_DEVICE_TAG;
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s_device.device.common.version = 1;
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s_device.device.common.module = const_cast<hw_module_t *>(module);
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s_device.device.common.close = close_device;
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s_device.device.enroll = enroll;
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s_device.device.verify = verify;
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s_device.device.delete_user = nullptr;
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s_device.device.delete_all_users = nullptr;
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*device = &s_device.device.common;
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ALOGE("called %s with gate keeper %p device %p\n", __func__, s_gatekeeper, *device);
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return 0;
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}
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static struct hw_module_methods_t gatekeeper_module_methods = {
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.open = goldfish_gatekeeper_open,
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};
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struct gatekeeper_module HAL_MODULE_INFO_SYM __attribute__((visibility("default"))) = {
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.common = {
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.tag = HARDWARE_MODULE_TAG,
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.module_api_version = GATEKEEPER_MODULE_API_VERSION_0_1,
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.hal_api_version = HARDWARE_HAL_API_VERSION,
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.id = GATEKEEPER_HARDWARE_MODULE_ID,
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.name = "Goldfish GateKeeper HAL",
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.author = "The Android Open Source Project",
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.methods = &gatekeeper_module_methods,
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.dso = 0,
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.reserved = {}
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},
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};
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