blob: 91f0dd3a5c3592a47c74400ce6400c4cd8b45411 [file] [log] [blame]
Yi Jin99c248f2017-08-25 18:11:58 -07001/*
2 * Copyright (C) 2017 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#include "Privacy.h"
18
Yi Jinbdf58942017-11-14 17:58:19 -080019#include <android/os/IncidentReportArgs.h>
Yi Jin7e0b4e52017-09-12 20:00:25 -070020#include <stdlib.h>
21
Yi Jin6cacbcb2018-03-30 14:04:52 -070022namespace android {
23namespace os {
24namespace incidentd {
25
Joe Onorato99598ee2019-02-11 15:55:13 +000026using namespace android::os;
27
Yi Jinbdf58942017-11-14 17:58:19 -080028uint64_t encode_field_id(const Privacy* p) { return (uint64_t)p->type << 32 | p->field_id; }
Yi Jin99c248f2017-08-25 18:11:58 -070029
Yi Jinb592e3b2018-02-01 15:17:04 -080030const Privacy* lookup(const Privacy* p, uint32_t fieldId) {
Yi Jinbdf58942017-11-14 17:58:19 -080031 if (p->children == NULL) return NULL;
Yi Jinb592e3b2018-02-01 15:17:04 -080032 for (int i = 0; p->children[i] != NULL; i++) { // NULL-terminated.
Yi Jinbdf58942017-11-14 17:58:19 -080033 if (p->children[i]->field_id == fieldId) return p->children[i];
34 // Incident section gen tool guarantees field ids in ascending order.
35 if (p->children[i]->field_id > fieldId) return NULL;
Yi Jin99c248f2017-08-25 18:11:58 -070036 }
37 return NULL;
38}
39
Yao Chen43706b42019-04-21 14:34:30 -070040bool sectionEncryption(int section_id) { return section_id == 3025 /*restricted image section*/; }
41
Joe Onorato99598ee2019-02-11 15:55:13 +000042static bool isAllowed(const uint8_t policy, const uint8_t check) {
43 switch (check) {
44 case PRIVACY_POLICY_LOCAL:
45 return policy == PRIVACY_POLICY_LOCAL;
46 case PRIVACY_POLICY_EXPLICIT:
47 case PRIVACY_POLICY_UNSET:
48 return policy == PRIVACY_POLICY_LOCAL
49 || policy == PRIVACY_POLICY_EXPLICIT
50 || policy == PRIVACY_POLICY_UNSET;
51 case PRIVACY_POLICY_AUTOMATIC:
Yi Jinb592e3b2018-02-01 15:17:04 -080052 return true;
53 default:
54 return false;
Yi Jin99c248f2017-08-25 18:11:58 -070055 }
56}
57
Joe Onorato99598ee2019-02-11 15:55:13 +000058PrivacySpec::PrivacySpec(uint8_t argPolicy) {
59 // TODO: Why on earth do we have two definitions of policy. Maybe
60 // it's not too late to clean this up.
61 switch (argPolicy) {
62 case android::os::PRIVACY_POLICY_AUTOMATIC:
63 case android::os::PRIVACY_POLICY_EXPLICIT:
64 case android::os::PRIVACY_POLICY_LOCAL:
65 mPolicy = argPolicy;
66 break;
67 default:
68 mPolicy = android::os::PRIVACY_POLICY_AUTOMATIC;
69 break;
70 }
Yi Jin99c248f2017-08-25 18:11:58 -070071}
72
Joe Onorato99598ee2019-02-11 15:55:13 +000073bool PrivacySpec::operator<(const PrivacySpec& that) const {
74 return mPolicy < that.mPolicy;
75}
Yi Jin99c248f2017-08-25 18:11:58 -070076
Joe Onorato99598ee2019-02-11 15:55:13 +000077bool PrivacySpec::CheckPremission(const Privacy* privacy, const uint8_t defaultDest) const {
78 uint8_t check = privacy != NULL ? privacy->policy : defaultDest;
79 return isAllowed(mPolicy, check);
80}
81
82bool PrivacySpec::RequireAll() const {
83 return mPolicy == android::os::PRIVACY_POLICY_LOCAL;
Yi Jin0f047162017-09-05 13:44:22 -070084}
Yi Jin6cacbcb2018-03-30 14:04:52 -070085
86} // namespace incidentd
87} // namespace os
88} // namespace android