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Add Malloc Debugging (#460)

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* added malloc implementation

* update malloc debugging label in settings

---------

Co-authored-by: Leviidev <Leviidev@users.noreply.github.com>
This commit is contained in:
levi 2026-09-09 08:52:58 -04:00 • committed by GitHub
parent c5bad70d37
commit 94bc9e8cf3
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GPG key ID: B5690EEEBB952194
3 changed files with 49 additions and 1 deletions
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35
StikDebug/Device/JITEnableContext.swift
View file

@ -17,6 +17,37 @@ typealias SyslogErrorHandler = (NSError?) -> Void
final class JITEnableContext {
static let shared = JITEnableContext()
private static func withCStringArray<R>(
_ strings: [String], _ body: (UnsafePointer<UnsafePointer<CChar>?>?, UInt) -> R
) -> R {
if strings.isEmpty {
return body(nil, 0)
}
var cStrings: [UnsafeMutablePointer<CChar>?] = strings.map { strdup($0) }
defer { cStrings.forEach { free($0) } }
return cStrings.withUnsafeBufferPointer { buffer in
buffer.baseAddress!.withMemoryRebound(to: UnsafePointer<CChar>?.self, capacity: buffer.count) { rebound in
body(rebound, UInt(buffer.count))
}
}
}
private static func mallocDebugEnvVars() -> [String] {
let defaults = UserDefaults.standard
let enableAll = defaults.bool(forKey: UserDefaults.Keys.mallocDebug)
let guardEdges = enableAll || defaults.bool(forKey: UserDefaults.Keys.mallocGuardEdges)
let scribble = enableAll || defaults.bool(forKey: UserDefaults.Keys.mallocScribble)
var envVars: [String] = []
if guardEdges {
envVars.append("MallocGuardEdges=1")
}
if scribble {
envVars.append("MallocScribble=1")
}
return envVars
}
private struct TunnelHandles {
var adapter: OpaquePointer?
var handshake: OpaquePointer?
@ -603,7 +634,9 @@ final class JITEnableContext {
try withProcessControl(remoteServer: remoteServer) { processControl in
var pid: UInt64 = 0
let ffiError = bundleID.withCString { bundleID in
process_control_launch_app(processControl, bundleID, nil, 0, nil, 0, true, false, &pid)
Self.withCStringArray(Self.mallocDebugEnvVars()) { envPtr, envCount in
process_control_launch_app(processControl, bundleID, envPtr, envCount, nil, 0, true, false, &pid)
}
}
if let ffiError {

4
StikDebug/Support/UserDefaults+Keys.swift
View file

@ -15,5 +15,9 @@ extension UserDefaults {
static let defaultScriptName = "DefaultScriptName"
static let defaultScriptNameValue = ""
static let targetDeviceIP = "TunnelDeviceIP"
/// Attaches processes with MallocGuardEdges and MallocScribble.
static let mallocDebug = "enableMallocDebug"
static let mallocGuardEdges = "enableMallocGuardEdges"
static let mallocScribble = "enableMallocScribble"
}
}

11
StikDebug/Views/SettingsView.swift
View file

@ -19,6 +19,7 @@ struct SettingsView: View {
@AppStorage("keepAliveAudio") private var keepAliveAudio = true
@AppStorage("keepAliveLocation") private var keepAliveLocation = true
@AppStorage(UserDefaults.Keys.targetDeviceIP) private var targetDeviceIP = DeviceConnectionContext.defaultTargetIPAddress
@AppStorage(UserDefaults.Keys.mallocDebug) private var mallocDebug = false
@State private var isShowingPairingFilePicker = false
@State private var isImportingFile = false
@ -131,6 +132,16 @@ struct SettingsView: View {
}
}
Section("Debugging") {
Toggle(isOn: $mallocDebug) {
VStack(alignment: .leading, spacing: 2) {
Text("Malloc Debugging")
Text("Attaches processes with MallocGuardEdges and MallocScribble to detect memory corruption.")
.font(.caption).foregroundStyle(.secondary)
}
}
}
Section("Advanced") {
HStack {
Text("Target Device IP")