mirror of
https://github.com/apple/container.git
synced 2026-09-09 17:25:36 +00:00
Danny Canter
f49f668936
- Capitalize containerization. - Wrap "All rights reserved" to a new line. Signed-off-by: Danny Canter <danny_canter@apple.com>
71 lines
2.8 KiB
Swift
71 lines
2.8 KiB
Swift
//===----------------------------------------------------------------------===//
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// Copyright © 2025 Apple Inc. and the Containerization project authors.
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// All rights reserved.
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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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// https://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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/// Errors related to IP and CIDR addresses.
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public enum NetworkAddressError: Swift.Error, Equatable, CustomStringConvertible {
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case invalidStringAddress(address: String)
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case invalidNetworkByteAddress(address: [UInt8])
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case invalidCIDR(cidr: String)
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case invalidAddressForSubnet(address: String, cidr: String)
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case invalidAddressRange(lower: String, upper: String)
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public var description: String {
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switch self {
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case .invalidStringAddress(let address):
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return "invalid IP address string \(address)"
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case .invalidNetworkByteAddress(let address):
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return "invalid IP address bytes \(address)"
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case .invalidCIDR(let cidr):
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return "invalid CIDR block: \(cidr)"
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case .invalidAddressForSubnet(let address, let cidr):
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return "invalid address \(address) for subnet \(cidr)"
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case .invalidAddressRange(let lower, let upper):
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return "invalid range for addresses \(lower) and \(upper)"
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}
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}
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}
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public typealias PrefixLength = UInt8
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extension PrefixLength {
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/// Compute a bit mask that passes the suffix bits, given the network prefix mask length.
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public var suffixMask32: UInt32 {
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if self <= 0 {
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return 0xffff_ffff
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}
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return self >= 32 ? 0x0000_0000 : (1 << (32 - self)) - 1
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}
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/// Compute a bit mask that passes the prefix bits, given the network prefix mask length.
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public var prefixMask32: UInt32 {
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~self.suffixMask32
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}
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/// Compute a bit mask that passes the suffix bits, given the network prefix mask length.
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public var suffixMask48: UInt64 {
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if self <= 0 {
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return 0x0000_ffff_ffff_ffff
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}
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return self >= 48 ? 0x0000_0000_0000_0000 : (1 << (48 - self)) - 1
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}
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/// Compute a bit mask that passes the prefix bits, given the network prefix mask length.
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public var prefixMask48: UInt64 {
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~self.suffixMask48 & 0x0000_ffff_ffff_ffff
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}
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}
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