Files
marvel-service/Sources/MarvelService/Internal/Use Cases/GenerateHashUseCase.swift
T
javier a83da81414 Some bug fixes (#8)
This PR contains the work done to fix some bug fixes that were encountered while quickly testing the interactions with the service endpoints. Furthermore, there is also a possible fix to build this library for non-apple platforms.

Reviewed-on: #8
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>
2025-10-05 22:05:07 +00:00

90 lines
2.5 KiB
Swift

//===----------------------------------------------------------------------===
//
// This source file is part of the MarvelService open source project
//
// Copyright (c) -2025 Röck+Cöde VoF. and the MarvelService project authors
// Licensed under the EUPL 1.2 or later.
//
// See LICENSE for license information
// See CONTRIBUTORS for the list of MarvelService project authors
//
//===----------------------------------------------------------------------===
#if canImport(CriptoKit)
import CryptoKit
#elseif canImport(Crypto)
import Crypto
#else
import CommonCrypto
#endif
import struct Foundation.Data
import struct Foundation.TimeInterval
/// A use case that generates a MD5 hash value, which is required to authenticate any request.
struct GenerateHashUseCase {
// MARK: Properties
/// A private key.
private let privateKey: String
/// A public key.
private let publicKey: String
// MARK: Initializers
/// Initializes this use case.
/// - Parameters:
/// - privateKey: A private key.
/// - publicKey: A public key.
init(
privateKey: String,
publicKey: String
) {
self.privateKey = privateKey
self.publicKey = publicKey
}
// MARK: Functions
/// Generates a MD5 hash value out of a given public key, private key and a timestamp.
/// - Parameter timestamp: A timestamp that changes on a request-by-request basis.
/// - Returns: A MD5 hash generated out of a private key, an public key, and a timestamp.
func callAsFunction(
timestamp: TimeInterval
) -> String {
let stringToHash = timestamp.asString + self.privateKey + self.publicKey
let dataToHash = Data(stringToHash.utf8)
#if canImport(CriptoKit) || canImport(Crypto)
return Insecure.MD5
.hash(data: dataToHash)
.map { String(format: .Format.hexadecimal, $0) }
.joined()
#else
return dataToHash
.withUnsafeBytes {
var hash = [UInt8](repeating: 0, count: Int(CC_MD5_DIGEST_LENGTH))
CC_MD5($0.baseAddress, CC_LONG(dataToHash.count), &hash)
return hash
}
.map { String(format: .Format.hexadecimal, $0) }
.joined()
#endif
}
}
// MARK: - Constants
private extension String {
/// A namespace assigned to string format representations.
enum Format {
/// A string format for MD5 hash hexadecimal bytes.
static let hexadecimal = "%02x"
}
}