1 /* 2 * Copyright (C) 2019 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 "idmap2/Policies.h" 18 19 #include <iterator> 20 #include <string> 21 #include <unordered_map> 22 #include <vector> 23 24 #include "androidfw/ResourceTypes.h" 25 #include "idmap2/Idmap.h" 26 #include "idmap2/Result.h" 27 28 namespace android::idmap2 { 29 30 Result<PolicyBitmask> PoliciesToBitmask(const std::vector<std::string>& policies) { 31 static const std::unordered_map<android::StringPiece, PolicyFlags> kStringToFlag = { 32 {kPolicyOdm, PolicyFlags::POLICY_ODM_PARTITION}, 33 {kPolicyOem, PolicyFlags::POLICY_OEM_PARTITION}, 34 {kPolicyPublic, PolicyFlags::POLICY_PUBLIC}, 35 {kPolicyProduct, PolicyFlags::POLICY_PRODUCT_PARTITION}, 36 {kPolicySignature, PolicyFlags::POLICY_SIGNATURE}, 37 {kPolicySystem, PolicyFlags::POLICY_SYSTEM_PARTITION}, 38 {kPolicyVendor, PolicyFlags::POLICY_VENDOR_PARTITION}, 39 }; 40 41 PolicyBitmask bitmask = 0; 42 for (const std::string& policy : policies) { 43 const auto iter = kStringToFlag.find(policy); 44 if (iter != kStringToFlag.end()) { 45 bitmask |= iter->second; 46 } else { 47 return Error("unknown policy \"%s\"", policy.c_str()); 48 } 49 } 50 51 return Result<PolicyBitmask>(bitmask); 52 } 53 54 std::vector<std::string> BitmaskToPolicies(const PolicyBitmask& bitmask) { 55 std::vector<std::string> policies; 56 57 if ((bitmask & PolicyFlags::POLICY_ODM_PARTITION) != 0) { 58 policies.emplace_back(kPolicyOdm); 59 } 60 61 if ((bitmask & PolicyFlags::POLICY_OEM_PARTITION) != 0) { 62 policies.emplace_back(kPolicyOem); 63 } 64 65 if ((bitmask & PolicyFlags::POLICY_PUBLIC) != 0) { 66 policies.emplace_back(kPolicyPublic); 67 } 68 69 if ((bitmask & PolicyFlags::POLICY_PRODUCT_PARTITION) != 0) { 70 policies.emplace_back(kPolicyProduct); 71 } 72 73 if ((bitmask & PolicyFlags::POLICY_SIGNATURE) != 0) { 74 policies.emplace_back(kPolicySignature); 75 } 76 77 if ((bitmask & PolicyFlags::POLICY_SYSTEM_PARTITION) != 0) { 78 policies.emplace_back(kPolicySystem); 79 } 80 81 if ((bitmask & PolicyFlags::POLICY_VENDOR_PARTITION) != 0) { 82 policies.emplace_back(kPolicyVendor); 83 } 84 85 return policies; 86 } 87 88 } // namespace android::idmap2 89
