Help/Support How to get file from web with wget and get device information.

[princessXZ 572 iPhone 7 15.6]

Hello. I want to get the device information in Tweak and create a license mechanism. 
Where is there a way to get the MacAddress of the device?
 (If MacAddress is difficult, other methods are possible)

Also, I try to get the database file on the web using wget, 
But always returns failed.

#import <substrate.h>
#import <iostream>
#import <fstream>

%hook AppController
-(void)applicationDidBecomeActive:(id)argument {
  //system("wget http://zorba.starfree.jp/ok.txt -P ~/");

  std::string sourceUrl = "http://zorba.starfree.jp/";
  std::string sourceFile = "ok.txt";
  std::string putPath = "./";
  std::string getUrl = sourceUrl + sourceFile;
  std::string command = "wget " + getUrl+ " -P " + putPath;

  system( ( const char* )command.c_str() );

  std::string dlFile = putPath + sourceFile;
  std::ifstream ifs( dlFile.c_str() );
  if ( ifs.fail() ) {
    NSLog(@"wget is failed");
  } else {
  NSLog(@"wget is sucess");
  }
  UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"license check" message:@"Getting License file Success!" delegate:nil cancelButtonTitle:@"Continue" otherButtonTitles:nil];
  [alert show];
  return %orig(argument);
}
%end