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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2025 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import struct Foundation.URL
public import SWBUtil
import SWBLibc
public import SWBCore
// Weak-linked because the framework isn't available in all contexts
#if canImport(ExecutionPolicy)
@_weakLinked import ExecutionPolicy
#endif
/// Concrete implementation of task for registering a built bundle or binary with the system to speed up execution policy checks.
public final class RegisterExecutionPolicyExceptionTaskAction: TaskAction {
/// The parsed command line options.
private struct Options {
static func emitUsage(_ name: String, _ outputDelegate: any TaskOutputDelegate) {
outputDelegate.emitOutput { stream in
stream <<< "usage: \(name) <input-file>\n"
}
}
/// The path to register.
let input: Path
init?(_ commandLine: AnySequence<String>, _ outputDelegate: any TaskOutputDelegate) {
var input: Path? = nil
var hadErrors = false
func error(_ message: String) {
outputDelegate.emitError(message)
hadErrors = true
}
// Parse the arguments.
let commandLine = [String](commandLine)
let programName = commandLine.first ?? "<<missing program name>>"
if commandLine.count != 2 {
error("invalid number of arguments")
} else {
input = Path(commandLine[1])
}
// If there were errors, emit the usage and return an error.
if hadErrors {
outputDelegate.emitOutput("\n")
Options.emitUsage(programName, outputDelegate)
return nil
}
// Initialize contents.
self.input = input!
}
}
public override class var toolIdentifier: String {
return "register-execution-policy-exception"
}
public override init() {
super.init()
}
public override func performTaskAction(
_ task: any ExecutableTask,
dynamicExecutionDelegate: any DynamicTaskExecutionDelegate,
executionDelegate: any TaskExecutionDelegate,
clientDelegate: any TaskExecutionClientDelegate,
outputDelegate: any TaskOutputDelegate
) async -> CommandResult {
// Parse the arguments.
guard let options = Options(task.commandLineAsStrings, outputDelegate) else {
return .failed
}
if SWBFeatureFlag.disableExecutionPolicyExceptionRegistration.value {
outputDelegate.note("Execution policy exception registration was skipped because the DisableExecutionPolicyExceptionRegistration feature flag is set")
return .succeeded
}
#if canImport(ExecutionPolicy)
if #_hasSymbol(EPExecutionPolicy.self) {
do {
// EPExecutionPolicy manages an XPC connection to syspolicyd, and we only need one per process.
// Further, concurrent deallocations of EPExecutionPolicy can trigger an ASan issue in libxpc <rdar://76685500>
enum Static {
static let shared = EPExecutionPolicy()
}
// Register the file.
try Static.shared.addException(for: URL(fileURLWithPath: options.input.str))
} catch {
// We don't ever fail if blessing fails, and the failure information is not particularly interesting to users.
}
}
#endif
return .succeeded
}
// MARK: - Serialization
public override func serialize<T: Serializer>(to serializer: T) {
super.serialize(to: serializer)
}
public required init(from deserializer: any Deserializer) throws {
try super.init(from: deserializer)
}
}
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