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/*
* Copyright (c) 2008-2010 Moxie Marlinspike
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include <iomanip>
#include <sstream>
#include <fstream>
#include <iostream>
#include <stdio.h>
#include <boost/filesystem/operations.hpp>
#include <boost/filesystem/exception.hpp>
#include <boost/lexical_cast.hpp>
#include <openssl/rand.h>
#include <sys/stat.h>
#include "HOTPCredentials.h"
#include "Util.h"
#define KEY_SIZE 16
#define DEFAULT_PATH "/etc/barada.d/"
using namespace std;
using namespace boost;
using namespace boost::filesystem;
int printUsage(char *name) {
cerr << endl << "You're running barada " << VERSION << endl << endl;
cerr << "Usage: " << name << " <user_name> <pin_number>" << endl;
cerr << "user_name:\tA system login name." << endl;
cerr << "pin_number:\tA multi-digit number." << endl;
return 0;
}
int main(int argc, char **argv) {
if (argc != 3) return printUsage(argv[0]);
try {
if (is_directory(path(DEFAULT_PATH) / argv[1])) {
fprintf(stderr, "Error: Barada user already exists...\n");
return 0;
}
} catch( filesystem_error err ) {
//This is the desired behavior (the user dir does not yet exist)
}
unsigned char key[KEY_SIZE];
if (!(RAND_bytes(key, sizeof(key)))) {
fprintf(stderr, "Error: Not enough entropy available to generate key. Try again later.\n");
return 0;
}
create_directory(path(DEFAULT_PATH));
chmod(DEFAULT_PATH, S_IRUSR | S_IWUSR);
create_directory(path(DEFAULT_PATH) / argv[1]);
chmod((string(DEFAULT_PATH) + "/" + argv[1]).c_str(), S_IRUSR | S_IWUSR);
HOTPCredentials credentials(1, lexical_cast<uint32_t>(argv[2]), key);
credentials.serialize(string(DEFAULT_PATH) + "/" + argv[1]);
cout << "Added " << argv[1] << " with key:" << endl;
std::string keyString = Util::charToHexString(key, sizeof(key));
cout << keyString << endl;
}
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