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/*
* Copyright (c) 1999
* Mark Murray. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY MARK MURRAY AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL MARK MURRAY OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <string.h>
#include <libutil.h>
#include <unistd.h>
#include "crypt.h"
static const struct {
const char *const name;
char *(*const func)(const char *, const char *);
const char *const magic;
} crypt_types[] = {
#ifdef HAS_DES
{
"des",
crypt_des,
NULL
},
#endif
{
"md5",
crypt_md5,
"$1$"
},
#ifdef HAS_BLOWFISH
{
"blf",
crypt_blowfish,
"$2"
},
#endif
{
"nth",
crypt_nthash,
"$3$"
},
{
"sha256",
crypt_sha256,
"$5$"
},
{
"sha512",
crypt_sha512,
"$6$"
},
{
NULL,
NULL,
NULL
}
};
#ifdef HAS_DES
#define CRYPT_DEFAULT "des"
#else
#define CRYPT_DEFAULT "md5"
#endif
static int crypt_type = -1;
static void
crypt_setdefault(void)
{
size_t i;
if (crypt_type != -1)
return;
for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) {
if (strcmp(CRYPT_DEFAULT, crypt_types[i].name) == 0) {
crypt_type = (int)i;
return;
}
}
crypt_type = 0;
}
const char *
crypt_get_format(void)
{
crypt_setdefault();
return (crypt_types[crypt_type].name);
}
int
crypt_set_format(const char *type)
{
size_t i;
crypt_setdefault();
for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) {
if (strcmp(type, crypt_types[i].name) == 0) {
crypt_type = (int)i;
return (1);
}
}
return (0);
}
char *
crypt(const char *passwd, const char *salt)
{
size_t i;
crypt_setdefault();
for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) {
if (crypt_types[i].magic != NULL && strncmp(salt,
crypt_types[i].magic, strlen(crypt_types[i].magic)) == 0)
return (crypt_types[i].func(passwd, salt));
}
return (crypt_types[crypt_type].func(passwd, salt));
}
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