CloverBootloader/CloverApp/Clover/bdmesg.swift

//
//  bdmesg.swift
//  Clover
//
//  Created by vector sigma on 19/10/2019.
//  Copyright © 2019 CloverHackyColor. All rights reserved.
//

import Foundation

func dumpBootlog() -> String? {
    var root: io_registry_entry_t
    var bootLog: CFTypeRef? = nil
    var log : String? = nil
    let entry = "boot-log" as CFString
    let chameleon = "IOService:/"
    let clover = "IODeviceTree:/efi/platform"
    root = IORegistryEntryFromPath(kIOMasterPortDefault, chameleon)
    
    if root != MACH_PORT_NULL {
        let attempt = IORegistryEntryCreateCFProperty(root, entry, kCFAllocatorDefault, 0)
        if (attempt != nil) {
            bootLog = attempt?.takeRetainedValue()
        }
    }
    if bootLog == nil {
        // Check for Clover boot log
        root = IORegistryEntryFromPath(kIOMasterPortDefault, clover)
        if root != MACH_PORT_NULL {
            let attempt = IORegistryEntryCreateCFProperty(root, entry, kCFAllocatorDefault, 0)
            if (attempt != nil) {
                bootLog = attempt?.takeRetainedValue()
            }
        }
    }
    IOObjectRelease(root)
    if bootLog != nil {
        let data = Data(bytes: CFDataGetBytePtr((bootLog as! CFData)), count: CFDataGetLength((bootLog as! CFData)))
        
        log = String(data: data , encoding: .utf8)
    }
    return log
}

func findCloverRevision() -> String? {
  let bdmesg = dumpBootlog()
  var rev : String? = nil
  if (bdmesg != nil) {
    for line in bdmesg!.components(separatedBy: .newlines) {
      if (line.range(of: "Starting Clover revision: ") != nil) {
        rev = line.components(separatedBy: "Starting Clover revision: ")[1]
        rev = rev!.components(separatedBy: " ")[0]
        break
      }
    }
  }
  return rev
}

func findBootPartitionDevice() -> String? {
    var bsd :String? = nil
    if let bdmesg : String = dumpBootlog() {
        if (bdmesg.range(of: "SelfDevicePath") != nil) {
            var temp : String? = bdmesg
            temp = temp?.components(separatedBy: "SelfDevicePath")[1]
            
            if (temp?.range(of: "SelfDirPath") != nil) {
                temp = temp?.components(separatedBy: "SelfDirPath")[0]
                
                let comp = temp?.components(separatedBy: ",")
                var uuid : String? = nil
                for str in comp! {
                    if (str.count == 36) &&
                        (str.range(of: "-") != nil) &&
                        str.components(separatedBy: "-").count == 5 {
                        uuid = str
                        break
                    }
                }
                
                if (uuid != nil) {
                    let dict = getAlldisks()
                    for disk in dict.allKeys {
                        let sub = dict.object(forKey: disk) as! NSDictionary
                        if (sub.object(forKey: "UUID") != nil) {
                            if (sub.object(forKey: "UUID") as! String) == uuid {
                                bsd = disk as? String
                                break
                            }
                        }
                    }
                }
            }
        }
    }
    return bsd
}

func findConfigPath() -> String? {
    var path : String? = nil
    if let log : String = dumpBootlog() {
        if (log.range(of: "[ GetDefaultSettings ]") != nil) {
            var temp : String = log.components(separatedBy: "[ GetDefaultSettings ]")[1]
            if (temp.range(of: "=== [") != nil) {
                temp = temp.components(separatedBy: "=== [")[0]
                // ok now must be a line feed somewhere to create an array and split lines
                // one of them looks like "0:109  0:008  EFI\CLOVER\config.plist loaded: Success"
                let lines : [String] = temp.components(separatedBy: "\n")
                for line in lines {
                    if (line.range(of: "EFI\\CLOVER\\") != nil) && (line.range(of: " loaded:") != nil) {
                        temp = line.components(separatedBy: "EFI\\CLOVER\\")[1]
                        temp = temp.components(separatedBy: " loaded:")[0]
                        break
                    }
                }
                if temp.hasSuffix(".plist") {
                    path = "EFI/CLOVER/\(temp)"
                }
            }
        }
    }
    return path
}