Yi Jin | 99c248f | 2017-08-25 18:11:58 -0700 | [diff] [blame] | 1 | /* |
| 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 Jin | bdf5894 | 2017-11-14 17:58:19 -0800 | [diff] [blame] | 19 | #include <android/os/IncidentReportArgs.h> |
Yi Jin | 7e0b4e5 | 2017-09-12 20:00:25 -0700 | [diff] [blame] | 20 | #include <stdlib.h> |
| 21 | |
Yi Jin | 6cacbcb | 2018-03-30 14:04:52 -0700 | [diff] [blame] | 22 | namespace android { |
| 23 | namespace os { |
| 24 | namespace incidentd { |
| 25 | |
Joe Onorato | 99598ee | 2019-02-11 15:55:13 +0000 | [diff] [blame] | 26 | using namespace android::os; |
| 27 | |
Yi Jin | bdf5894 | 2017-11-14 17:58:19 -0800 | [diff] [blame] | 28 | uint64_t encode_field_id(const Privacy* p) { return (uint64_t)p->type << 32 | p->field_id; } |
Yi Jin | 99c248f | 2017-08-25 18:11:58 -0700 | [diff] [blame] | 29 | |
Yi Jin | b592e3b | 2018-02-01 15:17:04 -0800 | [diff] [blame] | 30 | const Privacy* lookup(const Privacy* p, uint32_t fieldId) { |
Yi Jin | bdf5894 | 2017-11-14 17:58:19 -0800 | [diff] [blame] | 31 | if (p->children == NULL) return NULL; |
Yi Jin | b592e3b | 2018-02-01 15:17:04 -0800 | [diff] [blame] | 32 | for (int i = 0; p->children[i] != NULL; i++) { // NULL-terminated. |
Yi Jin | bdf5894 | 2017-11-14 17:58:19 -0800 | [diff] [blame] | 33 | 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 Jin | 99c248f | 2017-08-25 18:11:58 -0700 | [diff] [blame] | 36 | } |
| 37 | return NULL; |
| 38 | } |
| 39 | |
Joe Onorato | 99598ee | 2019-02-11 15:55:13 +0000 | [diff] [blame] | 40 | static bool isAllowed(const uint8_t policy, const uint8_t check) { |
| 41 | switch (check) { |
| 42 | case PRIVACY_POLICY_LOCAL: |
| 43 | return policy == PRIVACY_POLICY_LOCAL; |
| 44 | case PRIVACY_POLICY_EXPLICIT: |
| 45 | case PRIVACY_POLICY_UNSET: |
| 46 | return policy == PRIVACY_POLICY_LOCAL |
| 47 | || policy == PRIVACY_POLICY_EXPLICIT |
| 48 | || policy == PRIVACY_POLICY_UNSET; |
| 49 | case PRIVACY_POLICY_AUTOMATIC: |
Yi Jin | b592e3b | 2018-02-01 15:17:04 -0800 | [diff] [blame] | 50 | return true; |
| 51 | default: |
| 52 | return false; |
Yi Jin | 99c248f | 2017-08-25 18:11:58 -0700 | [diff] [blame] | 53 | } |
| 54 | } |
| 55 | |
Joe Onorato | 99598ee | 2019-02-11 15:55:13 +0000 | [diff] [blame] | 56 | PrivacySpec::PrivacySpec(uint8_t argPolicy) { |
| 57 | // TODO: Why on earth do we have two definitions of policy. Maybe |
| 58 | // it's not too late to clean this up. |
| 59 | switch (argPolicy) { |
| 60 | case android::os::PRIVACY_POLICY_AUTOMATIC: |
| 61 | case android::os::PRIVACY_POLICY_EXPLICIT: |
| 62 | case android::os::PRIVACY_POLICY_LOCAL: |
| 63 | mPolicy = argPolicy; |
| 64 | break; |
| 65 | default: |
| 66 | mPolicy = android::os::PRIVACY_POLICY_AUTOMATIC; |
| 67 | break; |
| 68 | } |
Yi Jin | 99c248f | 2017-08-25 18:11:58 -0700 | [diff] [blame] | 69 | } |
| 70 | |
Joe Onorato | 99598ee | 2019-02-11 15:55:13 +0000 | [diff] [blame] | 71 | bool PrivacySpec::operator<(const PrivacySpec& that) const { |
| 72 | return mPolicy < that.mPolicy; |
| 73 | } |
Yi Jin | 99c248f | 2017-08-25 18:11:58 -0700 | [diff] [blame] | 74 | |
Joe Onorato | 99598ee | 2019-02-11 15:55:13 +0000 | [diff] [blame] | 75 | bool PrivacySpec::CheckPremission(const Privacy* privacy, const uint8_t defaultDest) const { |
| 76 | uint8_t check = privacy != NULL ? privacy->policy : defaultDest; |
| 77 | return isAllowed(mPolicy, check); |
| 78 | } |
| 79 | |
| 80 | bool PrivacySpec::RequireAll() const { |
| 81 | return mPolicy == android::os::PRIVACY_POLICY_LOCAL; |
Yi Jin | 0f04716 | 2017-09-05 13:44:22 -0700 | [diff] [blame] | 82 | } |
Yi Jin | 6cacbcb | 2018-03-30 14:04:52 -0700 | [diff] [blame] | 83 | |
| 84 | } // namespace incidentd |
| 85 | } // namespace os |
| 86 | } // namespace android |