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/*
Part of this code come from zxcvbn-c example.
Copyright (c) 2015, Tony Evans
Copyright (c) 2016, KeePassXC Team
See zxcvbn/zxcvbn.cpp for complete COPYRIGHT Notice
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "zxcvbn/zxcvbn.h"
/* For pre-compiled headers under windows */
#ifdef _WIN32
#ifndef __MINGW32__
#include "stdafx.h"
#endif
#endif
static void calculate(const char *pwd, int advanced)
{
double e;
int len = strlen(pwd);
if (advanced == 0){
e = ZxcvbnMatch(pwd, 0, 0);
printf("Pass '%s' \tLength %d\tEntropy %.3f\tLog10 %.3f\n", pwd, 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("Pass '%s' \tLength %d\tEntropy %.3f\tLog10 %.3f\n Multi-word extra bits %.1f\n", pwd, 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 main(int argc, char **argv)
{
printf("KeePassXC Entropy Meter, based on zxcvbn-c.\nEnter your password below or pass it as argv\n");
printf(" Usage: entropy-meter [-a] [pwd1 pwd2 ...]\n> ");
int i, advanced;
if ((argc > 1) && (argv[1][0] == '-') && (!strcmp(argv[1], "-a")))
{
advanced = 1;
}
i = 2;
if (i >= argc)
{
/* No test passwords on command line, so get them from stdin */
char line[500];
while(fgets(line, sizeof line, stdin))
{
/* Drop the trailing newline character */
for(i = 0; i < static_cast<int>(sizeof line - 1); ++i)
{
if (line[i] < ' ')
{
line[i] = 0;
break;
}
}
if (line[0])
calculate(line,advanced);
printf("> ");
}
}
else
{
/* Do the test passwords on the command line */
for(; i < argc; ++i)
{
calculate(argv[i],advanced);
}
}
return 0;
}
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