<?php
if(!isset($argv[1])){
	echo "Uso: sudo php read.php PID\n";
	exit;
}

$regiones = array("misc", "code", "exe", "heap", "stack");

$map = '/proc/'.$argv[1].'/maps';
echo "Leyendo ".$map." ...\n";
$lines = file($map);

foreach($lines as $line){
	$line = trim($line);
	$separator = substr($line, 12, 1);
	
	if((string)$separator !== '-')
		continue;

	$mode = substr($line, 26, 4);
	/*
	r = read
	w = write
	x = execute
	s = shared
	p = private (copy on write)
	*/

	$start = substr($line, 0, 12);
	$end = substr($line, 13, 12);
	$length = (hexdec($end) - hexdec($start));
	$mem = file_get_contents('/proc/'.$argv[1].'/mem', NULL, NULL, hexdec($start), $length);
	/*if(strpos($mem, "testdisk.log") !== false){
		//echo substr($mem, strpos($mem, "testdisk.log"), 100)."\n";
		echo $mem;
		exit;
	}
	$cmd = substr($mem, 0, 512);*/

	//if($length < 2048){
		
		echo 
			"------------------------------------------\n".
			"Start     : ".$start." (".hexdec($start).")\n".
			"End       : ".$end." (".hexdec($end).")\n".
			"Length    : ".$length."\n".
			"Mode      : ".$mode."\n".
			//"Mem (15)  : ".$mem."\n";
			"Mem (15)  : ".bin2hex(substr($mem, 0, 15))."\n";
	//}
}