This password types should not be permitted:
a) pure numbers: birthdates, social security number, license plate, phone numbers;
b) words and all letters only passwords (uppercase, lowercase or mixed)
- as palindromes, consecutive or repetitive letters
+ as palindromes, consecutive or repetitive letters
or adjacent letters on your keyboard;
c) username, real name, company name or (e-mail?) address
in any form (as-is, reversed, capitalized, doubled, etc.).
(we can check only against username, gecos and hostname)
- d) common and obvious letter-number replacements
+ d) common and obvious letter-number replacements
(e.g. replace the letter O with number 0)
such as "M1cr0$0ft" or "P@ssw0rd" (CAVEAT: we cannot check for them
without the use of a dictionary).
#include <ctype.h>
#include <unistd.h>
#include <string.h>
+#include <strings.h>
#include "libbb.h"
/* passwords should consist of 6 (to 8 characters) */
-#define MINLEN 6
+#define MINLEN 6
static int string_checker_helper(const char *p1, const char *p2) __attribute__ ((__pure__));
#define NUMBERS 4
#define SPECIAL 8
-static const char *obscure_msg(const char *old_p, const char *new_p, const struct passwd *pw)
+static const char *obscure_msg(const char *old_p, const char *new_p, const struct passwd *pw)
{
int i;
int c;
/* size */
if (!new_p || (length = strlen(new_p)) < MINLEN)
return("too short");
-
+
/* no username as-is, as sub-string, reversed, capitalized, doubled */
if (string_checker(new_p, pw->pw_name)) {
return "similar to username";
return "too many similar characters";
}
}
- for(i=0;i<4;i++)
+ for (i=0; i<4; i++)
if (mixed & (1<<i)) size -= 2;
if (length < size)
return "too weak";
-
+
if (old_p && old_p[0] != '\0') {
/* check vs. old password */
if (string_checker(new_p, old_p)) {