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/*
* Copyright (C) 2017 KeePassXC Team <team@keepassxc.org>
*
* 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 2 or (at your option)
* version 3 of the License.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "Estimate.h"
#include <QCommandLineParser>
#include <QTextStream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <zxcvbn.h>
/* For pre-compiled headers under windows */
#ifdef _WIN32
#ifndef __MINGW32__
#include "stdafx.h"
#endif
#endif
Estimate::Estimate()
{
name = QString("estimate");
description = QObject::tr("Estimate the entropy of a password.");
}
Estimate::~Estimate()
{
}
static void estimate(const char* pwd, bool advanced)
{
double e;
int len = strlen(pwd);
if (!advanced) {
e = ZxcvbnMatch(pwd, 0, 0);
printf("Length %d\tEntropy %.3f\tLog10 %.3f\n", len, e, e * 0.301029996);
} else {
int ChkLen;
ZxcMatch_t *info, *p;
double m = 0.0;
e = ZxcvbnMatch(pwd, 0, &info);
for (p = info; p; p = p->Next) {
m += p->Entrpy;
}
m = e - m;
printf("Length %d\tEntropy %.3f\tLog10 %.3f\n Multi-word extra bits %.1f\n", len, e, e * 0.301029996, m);
p = info;
ChkLen = 0;
while (p) {
int n;
switch (static_cast<int>(p->Type)) {
case BRUTE_MATCH:
printf(" Type: Bruteforce ");
break;
case DICTIONARY_MATCH:
printf(" Type: Dictionary ");
break;
case DICT_LEET_MATCH:
printf(" Type: Dict+Leet ");
break;
case USER_MATCH:
printf(" Type: User Words ");
break;
case USER_LEET_MATCH:
printf(" Type: User+Leet ");
break;
case REPEATS_MATCH:
printf(" Type: Repeated ");
break;
case SEQUENCE_MATCH:
printf(" Type: Sequence ");
break;
case SPATIAL_MATCH:
printf(" Type: Spatial ");
break;
case DATE_MATCH:
printf(" Type: Date ");
break;
case BRUTE_MATCH + MULTIPLE_MATCH:
printf(" Type: Bruteforce(Rep)");
break;
case DICTIONARY_MATCH + MULTIPLE_MATCH:
printf(" Type: Dictionary(Rep)");
break;
case DICT_LEET_MATCH + MULTIPLE_MATCH:
printf(" Type: Dict+Leet(Rep) ");
break;
case USER_MATCH + MULTIPLE_MATCH:
printf(" Type: User Words(Rep)");
break;
case USER_LEET_MATCH + MULTIPLE_MATCH:
printf(" Type: User+Leet(Rep) ");
break;
case REPEATS_MATCH + MULTIPLE_MATCH:
printf(" Type: Repeated(Rep) ");
break;
case SEQUENCE_MATCH + MULTIPLE_MATCH:
printf(" Type: Sequence(Rep) ");
break;
case SPATIAL_MATCH + MULTIPLE_MATCH:
printf(" Type: Spatial(Rep) ");
break;
case DATE_MATCH + MULTIPLE_MATCH:
printf(" Type: Date(Rep) ");
break;
default:
printf(" Type: Unknown%d ", p->Type);
break;
}
ChkLen += p->Length;
printf(" Length %d Entropy %6.3f (%.2f) ", p->Length, p->Entrpy, p->Entrpy * 0.301029996);
for (n = 0; n < p->Length; ++n, ++pwd) {
printf("%c", *pwd);
}
printf("\n");
p = p->Next;
}
ZxcvbnFreeInfo(info);
if (ChkLen != len) {
printf("*** Password length (%d) != sum of length of parts (%d) ***\n", len, ChkLen);
}
}
}
int Estimate::execute(const QStringList& arguments)
{
QTextStream inputTextStream(stdin, QIODevice::ReadOnly);
QTextStream outputTextStream(stdout, QIODevice::WriteOnly);
QCommandLineParser parser;
parser.setApplicationDescription(this->description);
parser.addPositionalArgument("password", QObject::tr("Password for which to estimate the entropy."), "[password]");
QCommandLineOption advancedOption(QStringList() << "a"
<< "advanced",
QObject::tr("Perform advanced analysis on the password."));
parser.addOption(advancedOption);
parser.process(arguments);
const QStringList args = parser.positionalArguments();
if (args.size() > 1) {
outputTextStream << parser.helpText().replace("keepassxc-cli", "keepassxc-cli estimate");
return EXIT_FAILURE;
}
QString password;
if (args.size() == 1) {
password = args.at(0);
} else {
password = inputTextStream.readLine();
}
estimate(password.toLatin1(), parser.isSet(advancedOption));
return EXIT_SUCCESS;
}
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