a6f9fba382
Bug: 111446262 Test: atest android.security.identity.cts Test: VtsHalIdentityTargetTest Test: android.hardware.identity-support-lib-test Change-Id: I338b35f57f2bb7345c3f8f0c608c7a6213a0dc6b
128 lines
4.9 KiB
C++
128 lines
4.9 KiB
C++
/*
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* Copyright (c) 2019, 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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#define LOG_TAG "CredentialStore"
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#include <algorithm>
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#include <android-base/logging.h>
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#include <binder/IPCThreadState.h>
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#include "Credential.h"
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#include "CredentialData.h"
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#include "CredentialStore.h"
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#include "Util.h"
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#include "WritableCredential.h"
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namespace android {
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namespace security {
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namespace identity {
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CredentialStore::CredentialStore(const std::string& dataPath, sp<IIdentityCredentialStore> hal)
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: dataPath_(dataPath), hal_(hal) {}
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bool CredentialStore::init() {
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Status status = hal_->getHardwareInformation(&hwInfo_);
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if (!status.isOk()) {
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LOG(ERROR) << "Error getting hardware information: " << status.toString8();
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return false;
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}
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LOG(INFO) << "Connected to Identity Credential HAL with name '" << hwInfo_.credentialStoreName
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<< "' authored by '" << hwInfo_.credentialStoreAuthorName << "' with chunk size "
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<< hwInfo_.dataChunkSize << " and directoAccess set to "
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<< (hwInfo_.isDirectAccess ? "true" : "false");
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return true;
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}
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CredentialStore::~CredentialStore() {}
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Status CredentialStore::getSecurityHardwareInfo(SecurityHardwareInfoParcel* _aidl_return) {
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SecurityHardwareInfoParcel info;
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info.directAccess = hwInfo_.isDirectAccess;
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info.supportedDocTypes = hwInfo_.supportedDocTypes;
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*_aidl_return = info;
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return Status::ok();
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};
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Status CredentialStore::createCredential(const std::string& credentialName,
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const std::string& docType,
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sp<IWritableCredential>* _aidl_return) {
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uid_t callingUid = android::IPCThreadState::self()->getCallingUid();
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optional<bool> credentialExists =
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CredentialData::credentialExists(dataPath_, callingUid, credentialName);
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if (!credentialExists.has_value()) {
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return Status::fromServiceSpecificError(
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ERROR_GENERIC, "Error determining if credential with given name exists");
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}
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if (credentialExists.value()) {
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return Status::fromServiceSpecificError(ERROR_ALREADY_PERSONALIZED,
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"Credential with given name already exists");
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}
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if (hwInfo_.supportedDocTypes.size() > 0) {
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if (std::find(hwInfo_.supportedDocTypes.begin(), hwInfo_.supportedDocTypes.end(),
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docType) == hwInfo_.supportedDocTypes.end()) {
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return Status::fromServiceSpecificError(ERROR_DOCUMENT_TYPE_NOT_SUPPORTED,
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"No support for given document type");
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}
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}
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sp<IWritableIdentityCredential> halWritableCredential;
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Status status = hal_->createCredential(docType, false, &halWritableCredential);
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if (!status.isOk()) {
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return halStatusToGenericError(status);
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}
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sp<IWritableCredential> writableCredential = new WritableCredential(
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dataPath_, credentialName, docType, hwInfo_.dataChunkSize, halWritableCredential);
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*_aidl_return = writableCredential;
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return Status::ok();
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}
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Status CredentialStore::getCredentialByName(const std::string& credentialName, int32_t cipherSuite,
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sp<ICredential>* _aidl_return) {
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*_aidl_return = nullptr;
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uid_t callingUid = android::IPCThreadState::self()->getCallingUid();
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optional<bool> credentialExists =
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CredentialData::credentialExists(dataPath_, callingUid, credentialName);
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if (!credentialExists.has_value()) {
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return Status::fromServiceSpecificError(
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ERROR_GENERIC, "Error determining if credential with given name exists");
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}
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if (!credentialExists.value()) {
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return Status::fromServiceSpecificError(ERROR_NO_SUCH_CREDENTIAL,
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"Credential with given name doesn't exist");
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}
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// Note: IdentityCredentialStore.java's CipherSuite enumeration and CipherSuite from the
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// HAL is manually kept in sync. So this cast is safe.
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sp<Credential> credential = new Credential(CipherSuite(cipherSuite), dataPath_, credentialName);
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Status loadStatus = credential->loadCredential(hal_);
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if (!loadStatus.isOk()) {
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LOG(ERROR) << "Error loading credential";
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} else {
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*_aidl_return = credential;
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}
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return loadStatus;
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}
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} // namespace identity
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} // namespace security
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} // namespace android
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