When i try to create a helper for an application that retrieve system software and hardware details using system_profiler command i got the following error.
Response from XPC service: HELLO XPC
Response from XPC service: /usr/sbin/system_profiler: /usr/sbin/system_profiler: cannot execute binary file"
The code is given below.
class CommandHelper: NSObject,CommandHelperProtocol {
func upperCaseString(_ string: String, withReply reply: @escaping (String) -> Void) {
let response = string.uppercased()
reply(response)
}
func loadServerURL(_ string: String, withReply reply: @escaping (String) -> Void) {
let pipe = Pipe()
let process = Process()
process.launchPath = "/bin/sh"
process.arguments = ["system_profiler","SPHardwareDataType"]
process.standardOutput = pipe
process.standardError = pipe
let fileHandle = pipe.fileHandleForReading
process.launch()
let response = String(data: fileHandle.readDataToEndOfFile(), encoding: .utf8)
print(response!)
reply(response!)
}
}
When i set launchPath to /usr/sbin/system_profiler i got blank output.
Shells execute scripts, not binaries. The solution is to run the tool directly; there's hardly any reason to launch a shell just to execute a program:
process.launchPath = "/usr/sbin/system_profiler"
process.arguments = ["SPHardwareDataType"]
Also, there's no point in setting the stderr
pipe if you're not going to use it:
/* process.standardError = pipe */