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/*
* Copyright (C) 2019 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 "cli/Utils.h"
#include "cli/TextStream.h"
#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
const QCommandLineOption Estimate::AdvancedOption =
QCommandLineOption(QStringList() << "a"
<< "advanced",
QObject::tr("Perform advanced analysis on the password."));
Estimate::Estimate()
{
name = QString("estimate");
optionalArguments.append(
{QString("password"), QObject::tr("Password for which to estimate the entropy."), QString("[password]")});
options.append(Estimate::AdvancedOption);
description = QObject::tr("Estimate the entropy of a password.");
}
static void estimate(const char* pwd, bool advanced)
{
TextStream out(Utils::STDOUT, QIODevice::WriteOnly);
double e = 0.0;
int len = static_cast<int>(strlen(pwd));
if (!advanced) {
e = ZxcvbnMatch(pwd, nullptr, nullptr);
// clang-format off
out << QObject::tr("Length %1").arg(len, 0) << '\t'
<< QObject::tr("Entropy %1").arg(e, 0, 'f', 3) << '\t'
<< QObject::tr("Log10 %1").arg(e * 0.301029996, 0, 'f', 3) << endl;
// clang-format on
} else {
int ChkLen = 0;
ZxcMatch_t *info, *p;
double m = 0.0;
e = ZxcvbnMatch(pwd, nullptr, &info);
for (p = info; p; p = p->Next) {
m += p->Entrpy;
}
m = e - m;
// clang-format off
out << QObject::tr("Length %1").arg(len) << '\t'
<< QObject::tr("Entropy %1").arg(e, 0, 'f', 3) << '\t'
<< QObject::tr("Log10 %1").arg(e * 0.301029996, 0, 'f', 3) << "\n "
<< QObject::tr("Multi-word extra bits %1").arg(m, 0, 'f', 1) << endl;
// clang-format on
p = info;
ChkLen = 0;
while (p) {
int n;
switch (static_cast<int>(p->Type)) {
case BRUTE_MATCH:
out << " " << QObject::tr("Type: Bruteforce") << " ";
break;
case DICTIONARY_MATCH:
out << " " << QObject::tr("Type: Dictionary") << " ";
break;
case DICT_LEET_MATCH:
out << " " << QObject::tr("Type: Dict+Leet") << " ";
break;
case USER_MATCH:
out << " " << QObject::tr("Type: User Words") << " ";
break;
case USER_LEET_MATCH:
out << " " << QObject::tr("Type: User+Leet") << " ";
break;
case REPEATS_MATCH:
out << " " << QObject::tr("Type: Repeated") << " ";
break;
case SEQUENCE_MATCH:
out << " " << QObject::tr("Type: Sequence") << " ";
break;
case SPATIAL_MATCH:
out << " " << QObject::tr("Type: Spatial") << " ";
break;
case DATE_MATCH:
out << " " << QObject::tr("Type: Date") << " ";
break;
case BRUTE_MATCH + MULTIPLE_MATCH:
out << " " << QObject::tr("Type: Bruteforce(Rep)") << " ";
break;
case DICTIONARY_MATCH + MULTIPLE_MATCH:
out << " " << QObject::tr("Type: Dictionary(Rep)") << " ";
break;
case DICT_LEET_MATCH + MULTIPLE_MATCH:
out << " " << QObject::tr("Type: Dict+Leet(Rep)") << " ";
break;
case USER_MATCH + MULTIPLE_MATCH:
out << " " << QObject::tr("Type: User Words(Rep)") << " ";
break;
case USER_LEET_MATCH + MULTIPLE_MATCH:
out << " " << QObject::tr("Type: User+Leet(Rep)") << " ";
break;
case REPEATS_MATCH + MULTIPLE_MATCH:
out << " " << QObject::tr("Type: Repeated(Rep)") << " ";
break;
case SEQUENCE_MATCH + MULTIPLE_MATCH:
out << " " << QObject::tr("Type: Sequence(Rep)") << " ";
break;
case SPATIAL_MATCH + MULTIPLE_MATCH:
out << " " << QObject::tr("Type: Spatial(Rep)") << " ";
break;
case DATE_MATCH + MULTIPLE_MATCH:
out << " " << QObject::tr("Type: Date(Rep)") << " ";
break;
default:
out << " " << QObject::tr("Type: Unknown%1").arg(p->Type) << " ";
break;
}
ChkLen += p->Length;
// clang-format off
out << QObject::tr("Length %1").arg(p->Length) << '\t'
<< QObject::tr("Entropy %1 (%2)").arg(p->Entrpy, 6, 'f', 3).arg(p->Entrpy * 0.301029996, 0, 'f', 2) << '\t';
// clang-format on
for (n = 0; n < p->Length; ++n, ++pwd) {
out << *pwd;
}
out << endl;
p = p->Next;
}
ZxcvbnFreeInfo(info);
if (ChkLen != len) {
out << QObject::tr("*** Password length (%1) != sum of length of parts (%2) ***").arg(len).arg(ChkLen)
<< endl;
}
}
}
int Estimate::execute(const QStringList& arguments)
{
QSharedPointer<QCommandLineParser> parser = getCommandLineParser(arguments);
if (parser.isNull()) {
return EXIT_FAILURE;
}
TextStream inputTextStream(Utils::STDIN, QIODevice::ReadOnly);
const QStringList args = parser->positionalArguments();
QString password;
if (args.size() == 1) {
password = args.at(0);
} else {
password = inputTextStream.readLine();
}
estimate(password.toLatin1(), parser->isSet(Estimate::AdvancedOption));
return EXIT_SUCCESS;
}
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