110 lines
3.3 KiB
C++
110 lines
3.3 KiB
C++
/*
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* Copyright (C) 2017 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 "Privacy.h"
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#include <android/os/IncidentReportArgs.h>
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#include <stdlib.h>
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#include <strstream>
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namespace android {
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namespace os {
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namespace incidentd {
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using namespace android::os;
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using std::strstream;
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uint64_t encode_field_id(const Privacy* p) { return (uint64_t)p->type << 32 | p->field_id; }
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string Privacy::toString() const {
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if (this == NULL) {
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return "Privacy{null}";
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}
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strstream os;
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os << "Privacy{field_id=" << field_id << " type=" << ((int)type)
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<< " children=" << ((void*)children) << " policy=" << ((int)policy) << "}";
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return os.str();
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}
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const Privacy* lookup(const Privacy* p, uint32_t fieldId) {
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if (p->children == NULL) return NULL;
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for (int i = 0; p->children[i] != NULL; i++) { // NULL-terminated.
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if (p->children[i]->field_id == fieldId) return p->children[i];
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// Incident section gen tool guarantees field ids in ascending order.
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if (p->children[i]->field_id > fieldId) return NULL;
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}
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return NULL;
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}
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static bool isAllowed(const uint8_t policy, const uint8_t check) {
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switch (check) {
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case PRIVACY_POLICY_LOCAL:
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return policy == PRIVACY_POLICY_LOCAL;
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case PRIVACY_POLICY_EXPLICIT:
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case PRIVACY_POLICY_UNSET:
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return policy == PRIVACY_POLICY_LOCAL
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|| policy == PRIVACY_POLICY_EXPLICIT
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|| policy == PRIVACY_POLICY_UNSET;
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case PRIVACY_POLICY_AUTOMATIC:
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return true;
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default:
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return false;
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}
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}
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PrivacySpec::PrivacySpec(uint8_t argPolicy) {
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// TODO: Why on earth do we have two definitions of policy. Maybe
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// it's not too late to clean this up.
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switch (argPolicy) {
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case android::os::PRIVACY_POLICY_AUTOMATIC:
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case android::os::PRIVACY_POLICY_EXPLICIT:
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case android::os::PRIVACY_POLICY_LOCAL:
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mPolicy = argPolicy;
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break;
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default:
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mPolicy = android::os::PRIVACY_POLICY_AUTOMATIC;
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break;
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}
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}
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bool PrivacySpec::operator<(const PrivacySpec& that) const {
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return mPolicy < that.mPolicy;
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}
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bool PrivacySpec::CheckPremission(const Privacy* privacy, const uint8_t defaultDest) const {
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uint8_t check = privacy != NULL ? privacy->policy : defaultDest;
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return isAllowed(mPolicy, check);
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}
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bool PrivacySpec::RequireAll() const {
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return mPolicy == android::os::PRIVACY_POLICY_LOCAL;
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}
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uint8_t cleanup_privacy_policy(uint8_t policy) {
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if (policy >= PRIVACY_POLICY_AUTOMATIC) {
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return PRIVACY_POLICY_AUTOMATIC;
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}
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if (policy >= PRIVACY_POLICY_EXPLICIT) {
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return PRIVACY_POLICY_EXPLICIT;
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}
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return PRIVACY_POLICY_LOCAL;
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}
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} // namespace incidentd
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} // namespace os
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} // namespace android
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