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-rw-r--r--libbb/obscure.c62
1 files changed, 32 insertions, 30 deletions
diff --git a/libbb/obscure.c b/libbb/obscure.c
index dc7de75..588ef5a 100644
--- a/libbb/obscure.c
+++ b/libbb/obscure.c
@@ -44,7 +44,7 @@
* can't be a palindrome - like `R A D A R' or `M A D A M'
*/
-static int palindrome(const char *old, const char *newval)
+static int palindrome(const char *newval)
{
int i, j;
@@ -79,24 +79,25 @@ static int similiar(const char *old, const char *newval)
* a nice mix of characters.
*/
-static int simple(const char *old, const char *newval)
+static int simple(const char *newval)
{
int digits = 0;
int uppers = 0;
int lowers = 0;
int others = 0;
+ int c;
int size;
int i;
- for (i = 0; newval[i]; i++) {
- if (isdigit(newval[i]))
- digits++;
- else if (isupper(newval[i]))
- uppers++;
- else if (islower(newval[i]))
- lowers++;
+ for (i = 0; (c = *newval++) != 0; i++) {
+ if (isdigit(c))
+ digits = c;
+ else if (isupper(c))
+ uppers = c;
+ else if (islower(c))
+ lowers = c;
else
- others++;
+ others = c;
}
/*
@@ -129,49 +130,50 @@ static char *str_lower(char *string)
return string;
}
-static char *password_check(const char *old, const char *newval, const struct passwd *pwdp)
+static const char *
+password_check(const char *old, const char *newval, const struct passwd *pwdp)
{
- char *msg = NULL;
- char *oldmono, *newmono, *wrapped;
+ const char *msg;
+ char *newmono, *wrapped;
+ int lenwrap;
if (strcmp(newval, old) == 0)
return "no change";
+ if (simple(newval))
+ return "too simple";
+ msg = NULL;
newmono = str_lower(xstrdup(newval));
- oldmono = str_lower(xstrdup(old));
- wrapped = (char *) xmalloc(strlen(oldmono) * 2 + 1);
- strcpy(wrapped, oldmono);
- strcat(wrapped, oldmono);
+ lenwrap = strlen(old) * 2 + 1;
+ wrapped = (char *) xmalloc(lenwrap);
+ str_lower(strcpy(wrapped, old));
- if (palindrome(oldmono, newmono))
+ if (palindrome(newmono))
msg = "a palindrome";
- if (!msg && strcmp(oldmono, newmono) == 0)
+ else if (strcmp(wrapped, newmono) == 0)
msg = "case changes only";
- if (!msg && similiar(oldmono, newmono))
+ else if (similiar(wrapped, newmono))
msg = "too similiar";
- if (!msg && simple(old, newval))
- msg = "too simple";
-
- if (!msg && strstr(wrapped, newmono))
+ else if (strstr(strcat(wrapped, wrapped), newmono))
msg = "rotated";
bzero(newmono, strlen(newmono));
- bzero(oldmono, strlen(oldmono));
- bzero(wrapped, strlen(wrapped));
+ bzero(wrapped, lenwrap);
free(newmono);
- free(oldmono);
free(wrapped);
return msg;
}
-static char *obscure_msg(const char *old, const char *newval, const struct passwd *pwdp)
+static const char *
+obscure_msg(const char *old, const char *newval, const struct passwd *pwdp)
{
int maxlen, oldlen, newlen;
- char *new1, *old1, *msg;
+ char *new1, *old1;
+ const char *msg;
oldlen = strlen(old);
newlen = strlen(newval);
@@ -233,7 +235,7 @@ static char *obscure_msg(const char *old, const char *newval, const struct passw
extern int obscure(const char *old, const char *newval, const struct passwd *pwdp)
{
- char *msg = obscure_msg(old, newval, pwdp);
+ const char *msg = obscure_msg(old, newval, pwdp);
/* if (msg) { */
if (msg != NULL) {