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/* vi: set sw=4 ts=4: */
/*
* Utility routine.
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
#if ENABLE_USE_BB_CRYPT
/*
* DES and MD5 crypt implementations are taken from uclibc.
* They were modified to not use static buffers.
*/
/* Used by pw_encrypt_XXX.c */
static const uint8_t ascii64[] = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
static char*
to64(char *s, unsigned v, int n)
{
while (--n >= 0) {
*s++ = ascii64[v & 0x3f];
v >>= 6;
}
return s;
}
#include "pw_encrypt_des.c"
#include "pw_encrypt_md5.c"
#if ENABLE_USE_BB_CRYPT_SHA
#include "pw_encrypt_sha.c"
#endif
/* Other advanced crypt ids (TODO?): */
/* $2$ or $2a$: Blowfish */
static struct const_des_ctx *des_cctx;
static struct des_ctx *des_ctx;
/* my_crypt returns malloc'ed data */
static char *my_crypt(const char *key, const char *salt)
{
/* MD5 or SHA? */
if (salt[0] == '$' && salt[1] && salt[2] == '$') {
if (salt[1] == '1')
return md5_crypt(xzalloc(MD5_OUT_BUFSIZE), (unsigned char*)key, (unsigned char*)salt);
#if ENABLE_USE_BB_CRYPT_SHA
if (salt[1] == '5' || salt[1] == '6')
return sha_crypt((char*)key, (char*)salt);
#endif
}
if (!des_cctx)
des_cctx = const_des_init();
des_ctx = des_init(des_ctx, des_cctx);
return des_crypt(des_ctx, xzalloc(DES_OUT_BUFSIZE), (unsigned char*)key, (unsigned char*)salt);
}
/* So far nobody wants to have it public */
static void my_crypt_cleanup(void)
{
free(des_cctx);
free(des_ctx);
des_cctx = NULL;
des_ctx = NULL;
}
char* FAST_FUNC pw_encrypt(const char *clear, const char *salt, int cleanup)
{
char *encrypted;
encrypted = my_crypt(clear, salt);
if (cleanup)
my_crypt_cleanup();
return encrypted;
}
#else /* if !ENABLE_USE_BB_CRYPT */
char* FAST_FUNC pw_encrypt(const char *clear, const char *salt, int cleanup)
{
return xstrdup(crypt(clear, salt));
}
#endif
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