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extras: Add meaningful description to BoringSSL errors #237

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extras: Add meaningful description to BoringSSL errors #237

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25 changes: 25 additions & 0 deletions Sources/_CryptoExtras/Util/CryptoKitErrors_boring.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -22,3 +22,28 @@ extension CryptoKitError {
return .underlyingCoreCryptoError(error: Int32(bitPattern: CCryptoBoringSSL_ERR_get_error()))
}
}

extension CryptoKitError {
public var description: String {
switch self {
case .underlyingCoreCryptoError(error: let error):
let errorCode = UInt32(bitPattern: error)
let lib = String(cString: CCryptoBoringSSL_ERR_lib_error_string(errorCode))
let reason = String(cString: CCryptoBoringSSL_ERR_reason_error_string(errorCode))
return "lib: \(lib), reason: \(reason), code: \(errorCode)"
case .incorrectKeySize: return "incorrectKeySize"
case .incorrectParameterSize: return "incorrectParameterSize"
case .authenticationFailure: return "authenticationFailure"
case .wrapFailure: return "wrapFailure"
case .unwrapFailure: return "unwrapFailure"
case .invalidParameter: return "invalidParameter"
@unknown default: return "unknown"
}
}
}

#if hasAttribute(retroactive)
extension CryptoKitError: @retroactive CustomStringConvertible {}
#else
extension CryptoKitError: CustomStringConvertible {}
#endif