1 // swiftlint:disable all 2 // 3 // X509Extension.swift 4 // 5 // Copyright © 2019 Filippo Maguolo. 6 // 7 // Permission is hereby granted, free of charge, to any person obtaining a copy 8 // of this software and associated documentation files (the "Software"), to deal 9 // in the Software without restriction, including without limitation the rights 10 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 // copies of the Software, and to permit persons to whom the Software is 12 // furnished to do so, subject to the following conditions: 13 // 14 // The above copyright notice and this permission notice shall be included in all 15 // copies or substantial portions of the Software. 16 // 17 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 20 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 23 // SOFTWARE. 24 25 import Foundation 26 27 public class X509Extension { 28 29 let block: ASN1Object 30 31 required init(block: ASN1Object) { 32 self.block = block 33 } 34 35 public var oid: String? { 36 return block.sub(0)?.value as? String 37 } 38 39 public var name: String? { 40 return OID.description(of: oid ?? "") 41 } 42 43 public var isCritical: Bool { 44 if block.sub?.count ?? 0 > 2 { 45 return block.sub(1)?.value as? Bool ?? false 46 } 47 return false 48 } 49 50 public var value: Any? { 51 if let valueBlock = block.sub?.last { 52 return firstLeafValue(block: valueBlock) 53 } 54 return nil 55 } 56 57 var valueAsBlock: ASN1Object? { 58 return block.sub?.last 59 } 60 61 var valueAsStrings: [String] { 62 var result: [String] = [] 63 for item in block.sub?.last?.sub?.last?.sub ?? [] { 64 if let name = item.value as? String { 65 result.append(name) 66 } 67 } 68 return result 69 } 70 } 71 // swiftlint:enable all 72