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//===----------------------------------------------------------------------===//
//
// This source file is part of the SwiftASN1 open source project
//
// Copyright (c) 2021 Apple Inc. and the SwiftASN1 project authors
// Licensed under Apache License v2.0
//
// See LICENSE.txt for license information
// See CONTRIBUTORS.txt for the list of SwiftASN1 project authors
//
// SPDX-License-Identifier: Apache-2.0
//
//===----------------------------------------------------------------------===//
/// A UTF8String represents a string made up of UTF-8 bytes.
public struct ASN1UTF8String: DERImplicitlyTaggable, Hashable, Sendable, ExpressibleByStringLiteral {
@inlinable
public static var defaultIdentifier: ASN1Identifier {
.utf8String
}
/// The raw bytes that make up this string.
public var bytes: ArraySlice<UInt8>
@inlinable
public init(derEncoded node: ASN1Node, withIdentifier identifier: ASN1Identifier) throws {
self.bytes = try ASN1OctetString(derEncoded: node, withIdentifier: identifier).bytes
}
/// Construct a UTF8STRING from raw bytes.
@inlinable
public init(contentBytes: ArraySlice<UInt8>) {
self.bytes = contentBytes
}
@inlinable
public init(stringLiteral value: StringLiteralType) {
self.bytes = ArraySlice(value.utf8)
}
/// Construct a UTF8STRING from a String.
@inlinable
public init(_ string: String) {
self.bytes = ArraySlice(string.utf8)
}
@inlinable
public func serialize(into coder: inout DER.Serializer, withIdentifier identifier: ASN1Identifier) throws {
let octet = ASN1OctetString(contentBytes: self.bytes)
try octet.serialize(into: &coder, withIdentifier: identifier)
}
@inlinable
public func withUnsafeBytes<R>(_ body: (UnsafeRawBufferPointer) throws -> R) rethrows -> R {
return try self.bytes.withUnsafeBytes(body)
}
}
/// TeletexString is an uncommon ASN.1 string type.
///
/// This module represents a TeletexString as an opaque sequence of bytes.
public struct ASN1TeletexString: DERImplicitlyTaggable, Hashable, Sendable, ExpressibleByStringLiteral {
@inlinable
public static var defaultIdentifier: ASN1Identifier {
.teletexString
}
/// The raw bytes that make up this string.
public var bytes: ArraySlice<UInt8>
@inlinable
public init(derEncoded node: ASN1Node, withIdentifier identifier: ASN1Identifier) throws {
self.bytes = try ASN1OctetString(derEncoded: node, withIdentifier: identifier).bytes
}
/// Construct a TeletexString from raw bytes.
@inlinable
public init(contentBytes: ArraySlice<UInt8>) {
self.bytes = contentBytes
}
@inlinable
public init(stringLiteral value: StringLiteralType) {
self.bytes = ArraySlice(value.utf8)
}
@inlinable
public func serialize(into coder: inout DER.Serializer, withIdentifier identifier: ASN1Identifier) throws {
let octet = ASN1OctetString(contentBytes: self.bytes)
try octet.serialize(into: &coder, withIdentifier: identifier)
}
@inlinable
public func withUnsafeBytes<R>(_ body: (UnsafeRawBufferPointer) throws -> R) rethrows -> R {
return try self.bytes.withUnsafeBytes(body)
}
}
/// PrintableString represents a String made up of bytes that can reliably be printed in a terminal.
///
/// This string will be validated when it is constructed, and will reject characters outside of this
/// space.
///
/// PrintableString is deprecated for most use-cases and generally ``ASN1UTF8String`` should be
/// preferred.
public struct ASN1PrintableString: DERImplicitlyTaggable, Hashable, Sendable, ExpressibleByStringLiteral {
@inlinable
public static var defaultIdentifier: ASN1Identifier {
.printableString
}
/// The raw bytes that make up this string.
public var bytes: ArraySlice<UInt8> {
didSet {
precondition(Self._isValid(self.bytes))
}
}
@inlinable
public init(derEncoded node: ASN1Node, withIdentifier identifier: ASN1Identifier) throws {
self.bytes = try ASN1OctetString(derEncoded: node, withIdentifier: identifier).bytes
guard Self._isValid(self.bytes) else {
throw ASN1Error.invalidStringRepresentation(reason: "Invalid bytes for ASN1PrintableString")
}
}
/// Construct a PrintableString from raw bytes.
@inlinable
public init(contentBytes: ArraySlice<UInt8>) throws {
self.bytes = contentBytes
guard Self._isValid(self.bytes) else {
throw ASN1Error.invalidStringRepresentation(reason: "Invalid bytes for ASN1PrintableString")
}
}
@inlinable
public init(stringLiteral value: StringLiteralType) {
self.bytes = ArraySlice(value.utf8)
precondition(Self._isValid(self.bytes))
}
/// Construct a PrintableString from a String.
@inlinable
public init(_ string: String) throws {
self.bytes = ArraySlice(string.utf8)
guard Self._isValid(self.bytes) else {
throw ASN1Error.invalidStringRepresentation(reason: "Invalid bytes for ASN1PrintableString")
}
}
@inlinable
public func serialize(into coder: inout DER.Serializer, withIdentifier identifier: ASN1Identifier) throws {
let octet = ASN1OctetString(contentBytes: self.bytes)
try octet.serialize(into: &coder, withIdentifier: identifier)
}
@inlinable
public func withUnsafeBytes<R>(_ body: (UnsafeRawBufferPointer) throws -> R) rethrows -> R {
return try self.bytes.withUnsafeBytes(body)
}
@inlinable
static func _isValid(_ bytes: ArraySlice<UInt8>) -> Bool {
bytes.allSatisfy {
switch $0 {
case UInt8(ascii: "a")...UInt8(ascii: "z"),
UInt8(ascii: "A")...UInt8(ascii: "Z"),
UInt8(ascii: "0")...UInt8(ascii: "9"),
UInt8(ascii: "'"), UInt8(ascii: "("),
UInt8(ascii: ")"), UInt8(ascii: "+"),
UInt8(ascii: "-"), UInt8(ascii: "?"),
UInt8(ascii: ":"), UInt8(ascii: "/"),
UInt8(ascii: "="), UInt8(ascii: " "),
UInt8(ascii: ","), UInt8(ascii: "."):
return true
default:
return false
}
}
}
}
/// UniversalString is an uncommon ASN.1 string type.
///
/// This module represents a UniversalString as an opaque sequence of bytes.
public struct ASN1UniversalString: DERImplicitlyTaggable, Hashable, Sendable, ExpressibleByStringLiteral {
@inlinable
public static var defaultIdentifier: ASN1Identifier {
.universalString
}
/// The raw bytes that make up this string.
public var bytes: ArraySlice<UInt8>
@inlinable
public init(derEncoded node: ASN1Node, withIdentifier identifier: ASN1Identifier) throws {
self.bytes = try ASN1OctetString(derEncoded: node, withIdentifier: identifier).bytes
}
/// Construct a UniversalString from raw bytes.
@inlinable
public init(contentBytes: ArraySlice<UInt8>) {
self.bytes = contentBytes
}
@inlinable
public init(stringLiteral value: StringLiteralType) {
self.bytes = ArraySlice(value.utf8)
}
@inlinable
public func serialize(into coder: inout DER.Serializer, withIdentifier identifier: ASN1Identifier) throws {
let octet = ASN1OctetString(contentBytes: self.bytes)
try octet.serialize(into: &coder, withIdentifier: identifier)
}
@inlinable
public func withUnsafeBytes<R>(_ body: (UnsafeRawBufferPointer) throws -> R) rethrows -> R {
return try self.bytes.withUnsafeBytes(body)
}
}
/// BMPString is an uncommon ASN.1 string type.
///
/// This module represents a BMPString as an opaque sequence of bytes.
public struct ASN1BMPString: DERImplicitlyTaggable, Hashable, Sendable, ExpressibleByStringLiteral {
@inlinable
public static var defaultIdentifier: ASN1Identifier {
.bmpString
}
/// The raw bytes that make up this string.
public var bytes: ArraySlice<UInt8>
@inlinable
public init(derEncoded node: ASN1Node, withIdentifier identifier: ASN1Identifier) throws {
self.bytes = try ASN1OctetString(derEncoded: node, withIdentifier: identifier).bytes
}
/// Construct a BMPString from raw bytes.
@inlinable
public init(contentBytes: ArraySlice<UInt8>) {
self.bytes = contentBytes
}
@inlinable
public init(stringLiteral value: StringLiteralType) {
self.bytes = ArraySlice(value.utf8)
}
@inlinable
public func serialize(into coder: inout DER.Serializer, withIdentifier identifier: ASN1Identifier) throws {
let octet = ASN1OctetString(contentBytes: self.bytes)
try octet.serialize(into: &coder, withIdentifier: identifier)
}
@inlinable
public func withUnsafeBytes<R>(_ body: (UnsafeRawBufferPointer) throws -> R) rethrows -> R {
return try self.bytes.withUnsafeBytes(body)
}
}
/// IA5String represents a String made up of ASCII characters.
///
/// This string will be validated when it is constructed, and will reject characters outside of this
/// space.
///
/// IA5String is deprecated for most use-cases and generally ``ASN1UTF8String`` should be
/// preferred.
public struct ASN1IA5String: DERImplicitlyTaggable, Hashable, Sendable, ExpressibleByStringLiteral {
@inlinable
public static var defaultIdentifier: ASN1Identifier {
.ia5String
}
/// The raw bytes that make up this string.
public var bytes: ArraySlice<UInt8> {
didSet {
precondition(Self._isValid(self.bytes))
}
}
@inlinable
public init(derEncoded node: ASN1Node, withIdentifier identifier: ASN1Identifier) throws {
self.bytes = try ASN1OctetString(derEncoded: node, withIdentifier: identifier).bytes
guard Self._isValid(self.bytes) else {
throw ASN1Error.invalidStringRepresentation(reason: "Invalid bytes for ASN1IA5String")
}
}
/// Construct an IA5String from raw bytes.
@inlinable
public init(contentBytes: ArraySlice<UInt8>) throws {
self.bytes = contentBytes
guard Self._isValid(self.bytes) else {
throw ASN1Error.invalidStringRepresentation(reason: "Invalid bytes for ASN1IA5String")
}
}
@inlinable
public init(stringLiteral value: StringLiteralType) {
self.bytes = ArraySlice(value.utf8)
precondition(Self._isValid(self.bytes))
}
/// Construct an IA5String from a String.
@inlinable
public init(_ string: String) throws {
self.bytes = ArraySlice(string.utf8)
guard Self._isValid(self.bytes) else {
throw ASN1Error.invalidStringRepresentation(reason: "Invalid bytes for ASN1IA5String")
}
}
@inlinable
public func serialize(into coder: inout DER.Serializer, withIdentifier identifier: ASN1Identifier) throws {
let octet = ASN1OctetString(contentBytes: self.bytes)
try octet.serialize(into: &coder, withIdentifier: identifier)
}
@inlinable
public func withUnsafeBytes<R>(_ body: (UnsafeRawBufferPointer) throws -> R) rethrows -> R {
return try self.bytes.withUnsafeBytes(body)
}
@inlinable
static func _isValid(_ bytes: ArraySlice<UInt8>) -> Bool {
// Valid IA5Strings are ASCII characters.
bytes.allSatisfy { $0 < 128 }
}
}
extension String {
/// Construct a `String` from an ``ASN1UTF8String``.
public init(_ utf8String: ASN1UTF8String) {
self = String(decoding: utf8String.bytes, as: UTF8.self)
}
/// Construct a `String` from an ``ASN1PrintableString``.
public init(_ printableString: ASN1PrintableString) {
self = String(decoding: printableString.bytes, as: UTF8.self)
}
/// Construct a `String` from an ``ASN1IA5String``.
public init(_ ia5String: ASN1IA5String) {
self = String(decoding: ia5String.bytes, as: UTF8.self)
}
}
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