From: William Pitcock <[email protected]>
Sent: Wed 16 Nov 2011 21:27:48 EST
> char *crypt(const char *key, const char *salt)
> {
> - /* First, check if we are supposed to be using the MD5 replacement
> - * instead of DES... */
> - if (salt[0]=='$' && salt[1]=='1' && salt[2]=='$')
> - return __md5_crypt((unsigned char*)key, (unsigned char*)salt);
> - else
> - return __des_crypt((unsigned char*)key, (unsigned char*)salt);
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(crypt_impl_tab); i++)
> + {
> + if (crypt_impl_tab[i].salt_pfx &&
> + strncmp(crypt_impl_tab[i].salt_pfx, salt,
> strlen(crypt_impl_tab[i].salt_pfx)))
> + continue;
> +
> + return crypt_impl_tab[i].crypt_impl((unsigned char *) key,
> (unsigned char *) salt);
> + }
> +
> + /* this should never happen, but just incase... */
> + __set_errno(ENOSYS);
> + return NULL;
> }
You can make that a bit simpler and get rid of that ugly end case:
char *crypt(const char *key, const char *salt)
{
const struct crypt_impl *p;
for (p = crypt_impl_tab; p->salt_pfx; p++)
if (strncmp(p->salt_pfx, salt, strlen(p->salt_pfx)) == 0)
break;
return p->crypt_impl((unsigned char *)key, (unsigned char *)salt);
}
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