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Diffstat (limited to 'src/cli/Estimate.cpp')
| -rw-r--r-- | src/cli/Estimate.cpp | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/src/cli/Estimate.cpp b/src/cli/Estimate.cpp new file mode 100644 index 000000000..9a2ab0b0f --- /dev/null +++ b/src/cli/Estimate.cpp @@ -0,0 +1,170 @@ +/* + * 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; +} |