/usr/include/zxcvbn.h is in libzxcvbn-dev 2.3+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | #ifndef ZXCVBN_H_F98183CE2A01_INCLUDED
#define ZXCVBN_H_F98183CE2A01_INCLUDED
/**********************************************************************************
* C implementation of the zxcvbn password strength estimation method.
* Copyright (c) 2015-2017 Tony Evans
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
**********************************************************************************/
/* If this is defined, the dictiononary data is read from file. When undefined */
/* dictionary data is included in the source code. */
/*#define USE_DICT_FILE */
/* If this is defined, C++ builds which read dictionary data from file will use */
/* stdio FILE streams (and fopen,fread,fclose). When undefined, C++ builds will */
/* use std::ifstream to read dictionary data. Ignored for C builds (stdio FILE */
/* streams are always used). */
/*#define USE_FILE_IO */
#ifndef __cplusplus
/* C build. Use the standard malloc/free for heap memory */
#include <stdlib.h>
#define MallocFn(T,N) ((T *)malloc((N) * sizeof(T)))
#define FreeFn(P) free(P)
#else
/* C++ build. Use the new/delete operators for heap memory */
#define MallocFn(T,N) (new T[N])
#define FreeFn(P) (delete [] P)
#endif
/* Enum for the types of match returned in the Info arg to ZxcvbnMatch */
typedef enum
{
NON_MATCH, /* 0 */
BRUTE_MATCH, /* 1 */
DICTIONARY_MATCH, /* 2 */
DICT_LEET_MATCH, /* 3 */
USER_MATCH, /* 4 */
USER_LEET_MATCH, /* 5 */
REPEATS_MATCH, /* 6 */
SEQUENCE_MATCH, /* 7 */
SPATIAL_MATCH, /* 8 */
DATE_MATCH, /* 9 */
YEAR_MATCH, /* 10 */
MULTIPLE_MATCH = 32 /* Added to above to indicate matching part has been repeated */
} ZxcTypeMatch_t;
/* Linked list of information returned in the Info arg to ZxcvbnMatch */
struct ZxcMatch
{
int Begin; /* Char position of begining of match */
int Length; /* Number of chars in the match */
double Entrpy; /* The entropy of the match */
double MltEnpy; /* Entropy with additional allowance for multipart password */
ZxcTypeMatch_t Type; /* Type of match (Spatial/Dictionary/Order/Repeat) */
struct ZxcMatch *Next;
};
typedef struct ZxcMatch ZxcMatch_t;
#ifdef __cplusplus
extern "C" {
#endif
#ifdef USE_DICT_FILE
/**********************************************************************************
* Read the dictionnary data from the given file. Returns 1 if OK, 0 if error.
* Called once at program startup.
*/
int ZxcvbnInit(const char *);
/**********************************************************************************
* Free the dictionnary data after use. Called once at program shutdown.
*/
void ZxcvbnUnInit();
#else
/* As the dictionary data is included in the source, define these functions to do nothing. */
#define ZxcvbnInit(s) 1
#define ZxcvbnUnInit() do {} while(0)
#endif
/**********************************************************************************
* The main password matching function. May be called multiple times.
* The parameters are:
* Passwd The password to be tested. Null terminated string.
* UserDict User supplied dictionary words to be considered particulary bad. Passed
* as a pointer to array of string pointers, with null last entry (like
* the argv parameter to main()). May be null or point to empty array when
* there are no user dictionary words.
* Info The address of a pointer variable to receive information on the parts
* of the password. This parameter can be null if no information is wanted.
* The data should be freed by calling ZxcvbnFreeInfo().
*
* Returns the entropy of the password (in bits).
*/
double ZxcvbnMatch(const char *Passwd, const char *UserDict[], ZxcMatch_t **Info);
/**********************************************************************************
* Free the data returned in the Info parameter to ZxcvbnMatch().
*/
void ZxcvbnFreeInfo(ZxcMatch_t *Info);
#ifdef __cplusplus
}
#endif
#endif
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