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/*
* OTP Utilities
* Copyright (C) 2022 David M. Syzdek <david@syzdek.net>.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of David M. Syzdek nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 DAVID M SYZDEK 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.
*/
/*
* @file lib/libotputil/lmisc.c
*/
#define _LIB_LIBOTPUTIL_LMISC_C 1
#include "lmisc.h"
///////////////
// //
// Headers //
// //
///////////////
#pragma mark - Headers
#include <errno.h>
#include <stdarg.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <ctype.h>
/////////////////
// //
// Variables //
// //
/////////////////
#pragma mark - Variables
#pragma mark otputil_md_list[]
static const otputil_map_t otputil_md_list[] =
{
{ .map_name = "none", .map_id = OTPUTIL_MD_NONE },
{ .map_name = "md4", .map_id = OTPUTIL_MD_MD4 },
{ .map_name = "md5", .map_id = OTPUTIL_MD_MD5 },
{ .map_name = "sha1", .map_id = OTPUTIL_MD_SHA1 },
{ .map_name = "sha256", .map_id = OTPUTIL_MD_SHA256 },
{ .map_name = "sha512", .map_id = OTPUTIL_MD_SHA512 },
#ifdef HAVE_EVP_SHA3_256
{ .map_name = "sha3-256", .map_id = OTPUTIL_MD_SHA3_256 },
#endif
#ifdef HAVE_EVP_SHA3_512
{ .map_name = "sha3-512", .map_id = OTPUTIL_MD_SHA3_512 },
#endif
{ .map_name = NULL, .map_id = 0 },
};
/////////////////
// //
// Functions //
// //
/////////////////
#pragma mark - Functions
void
otputil_debug(
otputil_t * tud,
FILE * fs )
{
const otputil_bv_t * default_bv;
default_bv = &otputil_const_defaults_k;
tud = ((tud)) ? tud : &otputil_defaults;
fs = ((fs)) ? fs : stdout;
fprintf(fs, "OTPUtils Options:\n");
fprintf(fs, " OTPUTIL_OPT_DESC: %s\n", (((tud->util_desc)) ? tud->util_desc : "n/a"));
fprintf(fs, " OTPUTIL_OPT_METHOD: %i\n", tud->util_method);
fprintf(fs, "\n");
fprintf(fs, "HOTP (RFC 4226) Options:\n");
fprintf(fs, " OTPUTIL_OPT_HOTP_C: %" PRIu64 "\n", tud->hotp_c);
fprintf(fs, " OTPUTIL_OPT_HOTP_DIGITS: %i\n", tud->hotp_digits);
fprintf(fs, " OTPUTIL_OPT_HOTP_HMAC: %s\n", otputil_md2str(tud->hotp_hmac));
fprintf(fs, " OTPUTIL_OPT_HOTP_KSTR: %s\n", otputil_bvbase32(((tud->hotp_k)) ? tud->hotp_k : default_bv));
fprintf(fs, "\n");
fprintf(fs, "OTP (RFC 2289) Options:\n");
fprintf(fs, " OTPUTIL_OPT_OTP_ENCODE: %i\n", tud->otp_encoding);
fprintf(fs, " OTPUTIL_OPT_OTP_HASH: %s\n", otputil_md2str(tud->otp_hash));
fprintf(fs, " OTPUTIL_OPT_OTP_PASS: %s\n", (((tud->otp_pass)) ? tud->otp_pass : "n/a"));
fprintf(fs, " OTPUTIL_OPT_OTP_SEED: %s\n", (((tud->otp_seed)) ? tud->otp_seed : "n/a"));
fprintf(fs, " OTPUTIL_OPT_OTP_SEQ: %i\n", tud->otp_seq);
fprintf(fs, "\n");
fprintf(fs, "S/KEY (RFC 1760) Options:\n");
fprintf(fs, " OTPUTIL_OPT_SKEY_ENCODE: %i\n", tud->skey_encoding);
fprintf(fs, " OTPUTIL_OPT_SKEY_HASH: %s\n", otputil_md2str(tud->skey_hash));
fprintf(fs, " OTPUTIL_OPT_SKEY_PASS: %s\n", (((tud->skey_pass)) ? tud->skey_pass : "n/a"));
fprintf(fs, " OTPUTIL_OPT_SKEY_SEQ: %i\n", tud->skey_seq);
fprintf(fs, "\n");
fprintf(fs, "TOTP (RFC 6238) Options:\n");
fprintf(fs, " OTPUTIL_OPT_TOTP_DIGITS: %i\n", tud->totp_digits);
fprintf(fs, " OTPUTIL_OPT_TOTP_HMAC: %s\n", otputil_md2str(tud->totp_hmac));
fprintf(fs, " OTPUTIL_OPT_TOTP_KSTR: %s\n", otputil_bvbase32(((tud->totp_k)) ? tud->totp_k : default_bv));
fprintf(fs, " OTPUTIL_OPT_TOTP_T0: %" PRIu64 "\n", tud->totp_t0);
fprintf(fs, " OTPUTIL_OPT_TOTP_TIME: %" PRIu64 "\n", tud->totp_time);
fprintf(fs, " OTPUTIL_OPT_TOTP_X: %" PRIu64 "\n", tud->totp_tx);
return;
}
const char *
otputil_err2string(
int err )
{
switch(err)
{
case OTPUTIL_SUCCESS: return("success");
case OTPUTIL_EBADDATA: return("invalid data");
case OTPUTIL_ENOBUFS: return("no buffer space available");
case OTPUTIL_ENOMEM: return("out of virtual memory");
case OTPUTIL_ENOTSUP: return("method or feature is not supported");
case OTPUTIL_EOPTION: return("invalid option");
case OTPUTIL_EOPTVAL: return("invalid option value");
default: break;
};
return("unknown error");
}
const EVP_MD *
otputil_evp_md(
int id )
{
switch(id)
{
case OTPUTIL_MD_MD4: return(EVP_md4());
case OTPUTIL_MD_MD5: return(EVP_md5());
case OTPUTIL_MD_SHA1: return(EVP_sha1());
case OTPUTIL_MD_SHA256: return(EVP_sha256());
case OTPUTIL_MD_SHA512: return(EVP_sha512());
#ifdef HAVE_EVP_SHA3_256
case OTPUTIL_MD_SHA3_256: return(EVP_sha3_256());
#endif
#ifdef HAVE_EVP_SHA3_512
case OTPUTIL_MD_SHA3_512: return(EVP_sha3_512());
#endif
default: break;
};
return(NULL);
}
char *
otputil_getpass(
const char * prompt,
char * pass,
size_t passlen )
{
static char buff[BNDL_PASSWORD_LEN+1];
if (!(pass))
{
pass = buff;
passlen = sizeof(buff);
};
return(bindle_getpass_r(prompt, pass, passlen));
}
const char *
otputil_md2str(
int md )
{
int x;
for(x = 0; ((otputil_md_list[x].map_name)); x++)
if (md == otputil_md_list[x].map_id)
return(otputil_md_list[x].map_name);
return(NULL);
}
int
otputil_str2md(
const char * str )
{
int x;
assert(str != NULL);
for(x = 0; ((otputil_md_list[x].map_name)); x++)
if (!(strcasecmp(str, otputil_md_list[x].map_name)))
return(otputil_md_list[x].map_id);
return(-1);
}
uintmax_t
otputil_upow(
uintmax_t base,
uintmax_t exp )
{
uintmax_t result;
result = 1;
while(1)
{
if (exp & 1)
result *= base;
exp >>= 1;
if (!(exp))
return(result);
base *= base;
}
return(0);
}
/* end of source file */
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