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ykpers.c
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ykpers.c
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/* -*- mode:C; c-file-style: "bsd" -*- */
/*
* Copyright (c) 2008, 2009, 2010, 2011 Yubico AB
* All rights reserved.
*
* 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.
*
* 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 THE COPYRIGHT
* OWNER 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 "ykcore_lcl.h"
#include "ykpbkdf2.h"
#include "yktsd.h"
#include <ykpers.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <ctype.h>
#include <assert.h>
#include <yubikey.h>
struct ykp_config_t {
unsigned int yk_major_version;
unsigned int yk_minor_version;
unsigned int configuration_number;
YK_CONFIG ykcore_config;
};
static const YK_CONFIG default_config1 = {
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* fixed */
{ 0, 0, 0, 0, 0, 0 }, /* uid */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* key */
{ 0, 0, 0, 0, 0, 0 }, /* accCode */
0, /* fixedSize */
0, /* extFlags */
TKTFLAG_APPEND_CR, /* tktFlags */
0, /* cfgFlags */
0, /* ctrOffs */
0 /* crc */
};
static const YK_CONFIG default_config2 = {
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* fixed */
{ 0, 0, 0, 0, 0, 0 }, /* uid */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* key */
{ 0, 0, 0, 0, 0, 0 }, /* accCode */
0, /* fixedSize */
0, /* extFlags */
TKTFLAG_APPEND_CR, /* tktFlags */
/* cfgFlags */
CFGFLAG_STATIC_TICKET | CFGFLAG_STRONG_PW1 | CFGFLAG_STRONG_PW2 | CFGFLAG_MAN_UPDATE,
0, /* ctrOffs */
0 /* crc */
};
YKP_CONFIG *ykp_create_config(void)
{
YKP_CONFIG *cfg = malloc(sizeof(YKP_CONFIG));
if (cfg) {
memcpy(&cfg->ykcore_config, &default_config1,
sizeof(default_config1));
cfg->yk_major_version = 1;
cfg->yk_minor_version = 3;
cfg->configuration_number = 1;
return cfg;
}
return 0;
}
int ykp_free_config(YKP_CONFIG *cfg)
{
if (cfg) {
free(cfg);
return 1;
}
return 0;
}
int ykp_configure_for(YKP_CONFIG *cfg, int confnum, YK_STATUS *st)
{
cfg->yk_major_version = st->versionMajor;
cfg->yk_minor_version = st->versionMinor;
switch(confnum) {
case 1:
memcpy(&cfg->ykcore_config, &default_config1,
sizeof(default_config1));
cfg->configuration_number = 1;
return 1;
case 2:
if (cfg->yk_major_version >= 2) {
memcpy(&cfg->ykcore_config, &default_config2,
sizeof(default_config2));
cfg->configuration_number = 2;
return 1;
}
ykp_errno = YKP_EOLDYUBIKEY;
break;
default:
ykp_errno = YKP_EINVCONFNUM;
break;
}
return 0;
}
/* Return number of bytes of key data for this configuration.
* 20 bytes is 160 bits, 16 bytes is 128.
*/
int _get_supported_key_length(const YKP_CONFIG *cfg)
{
bool key_bits_in_uid = false;
/* OATH-HOTP and HMAC-SHA1 challenge response support 20 byte (160 bits)
* keys, holding the last four bytes in the uid field.
*/
if ((cfg->ykcore_config.tktFlags & TKTFLAG_OATH_HOTP) == TKTFLAG_OATH_HOTP)
return 20;
if ((cfg->ykcore_config.tktFlags & TKTFLAG_CHAL_RESP) == TKTFLAG_CHAL_RESP &&
(cfg->ykcore_config.cfgFlags & CFGFLAG_CHAL_HMAC) == CFGFLAG_CHAL_HMAC) {
return 20;
}
return 16;
}
/* Decode 128 bit AES key into cfg->ykcore_config.key */
int ykp_AES_key_from_hex(YKP_CONFIG *cfg, const char *hexkey) {
char aesbin[256];
/* Make sure that the hexkey is exactly 32 characters */
if (strlen(hexkey) != 32) {
return 1; /* Bad AES key */
}
/* Make sure that the hexkey is made up of only [0-9a-f] */
if (! yubikey_hex_p(hexkey))
return 1;
yubikey_hex_decode(aesbin, hexkey, sizeof(aesbin));
memcpy(cfg->ykcore_config.key, aesbin, sizeof(cfg->ykcore_config.key));
return 0;
}
/* Decode 160 bits HMAC key, used with OATH and HMAC challenge-response.
*
* The first 128 bits of the HMAC go key into cfg->ykcore_config.key,
* and 32 bits into the first four bytes of cfg->ykcore_config.uid.
*/
int ykp_HMAC_key_from_hex(YKP_CONFIG *cfg, const char *hexkey) {
char aesbin[256];
int i;
/* Make sure that the hexkey is exactly 40 characters */
if (strlen(hexkey) != 40) {
return 1; /* Bad HMAC key */
}
/* Make sure that the hexkey is made up of only [0-9a-f] */
if (! yubikey_hex_p(hexkey))
return 1;
yubikey_hex_decode(aesbin, hexkey, sizeof(aesbin));
i = sizeof(cfg->ykcore_config.key);
memcpy(cfg->ykcore_config.key, aesbin, i);
memcpy(cfg->ykcore_config.uid, aesbin + i, 20 - i);
return 0;
}
/* Generate an AES (128 bits) or HMAC (despite the function name) (160 bits)
* key from user entered input.
*
* Use user provided salt, or use salt from an available random device.
* If no random device is available we fall back to using 2048 bits of
* system time data, together with the user input, as salt.
*/
int ykp_AES_key_from_passphrase(YKP_CONFIG *cfg, const char *passphrase,
const char *salt)
{
if (cfg) {
char *random_places[] = {
"/dev/srandom",
"/dev/urandom",
"/dev/random",
0
};
char **random_place;
uint8_t _salt[8];
size_t _salt_len = 0;
unsigned char buf[sizeof(cfg->ykcore_config.key) + 4];
int rc;
int key_bytes = _get_supported_key_length(cfg);
assert (key_bytes <= sizeof(buf));
if (salt) {
_salt_len = strlen(salt);
if (_salt_len > 8)
_salt_len = 8;
memcpy(_salt, salt, _salt_len);
} else {
for (random_place = random_places;
*random_place;
random_place++) {
FILE *random_file = fopen(*random_place, "r");
if (random_file) {
size_t read_bytes = 0;
while (read_bytes < sizeof(_salt)) {
size_t n = fread(&_salt[read_bytes],
1, sizeof (_salt) - read_bytes,
random_file);
read_bytes += n;
}
fclose(random_file);
_salt_len = sizeof(_salt);
break; /* from for loop */
}
}
}
if (_salt_len == 0) {
/* There was no randomness files, so create a cheap
salt from time */
# include <ykpbkdf2.h>
time_t t = time(NULL);
uint8_t output[256]; /* 2048 bits is a lot! */
yk_hmac_sha1.prf_fn(passphrase, strlen(passphrase),
(char *)&t, sizeof(t),
output, sizeof(output));
memcpy(_salt, output, sizeof(_salt));
_salt_len = sizeof(_salt);
}
rc = yk_pbkdf2(passphrase,
_salt, _salt_len,
1024,
buf, key_bytes,
&yk_hmac_sha1);
if (rc) {
memcpy(cfg->ykcore_config.key, buf, sizeof(cfg->ykcore_config.key));
if (key_bytes == 20) {
memcpy(cfg->ykcore_config.uid, buf + sizeof(cfg->ykcore_config.key), 4);
}
}
memset (buf, 0, sizeof(buf));
return rc;
}
return 0;
}
static bool vcheck_all(const YKP_CONFIG *cfg)
{
return true;
}
static bool vcheck_v1(const YKP_CONFIG *cfg)
{
return cfg->yk_major_version == 1;
}
static bool vcheck_no_v1(const YKP_CONFIG *cfg)
{
return cfg->yk_major_version > 1;
}
static bool vcheck_v21_or_greater(const YKP_CONFIG *cfg)
{
return (cfg->yk_major_version == 2 &&
cfg->yk_minor_version >= 1) ||
cfg->yk_major_version > 2;
}
static bool vcheck_v22_or_greater(const YKP_CONFIG *cfg)
{
return (cfg->yk_major_version == 2 &&
cfg->yk_minor_version >= 2) ||
cfg->yk_major_version > 2;
}
int ykp_set_oath_imf(YKP_CONFIG *cfg, unsigned long imf)
{
if (!vcheck_v22_or_greater(cfg)) {
ykp_errno = YKP_EYUBIKEYVER;
return 0;
}
if (imf > 65535*16) {
ykp_errno = YKP_EINVAL;
return 0;
}
if (imf % 16 != 0) {
ykp_errno = YKP_EINVAL;
return 0;
}
/* IMF/16 is 16 bits stored big-endian in uid[4] */
imf /= 16;
cfg->ykcore_config.uid[4] = imf >> 8;
cfg->ykcore_config.uid[5] = imf;
return 1;
}
unsigned long ykp_get_oath_imf(const YKP_CONFIG *cfg)
{
if (!vcheck_v22_or_greater(cfg)) {
return 0;
}
/* we can't do a simple cast due to alignment issues */
return ((cfg->ykcore_config.uid[4] << 8)
| cfg->ykcore_config.uid[5]) << 4;
}
#define def_set_charfield(fnname,fieldname,size,extra,vcheck) \
int ykp_set_ ## fnname(YKP_CONFIG *cfg, unsigned char *input, size_t len) \
{ \
if (cfg) { \
size_t max_chars = len; \
\
if (!vcheck(cfg)) { \
ykp_errno = YKP_EYUBIKEYVER; \
return 0; \
} \
if (max_chars > (size)) \
max_chars = (size); \
\
memcpy(cfg->ykcore_config.fieldname, (input), max_chars); \
memset(cfg->ykcore_config.fieldname + max_chars, 0, \
(size) - max_chars); \
extra; \
\
return 1; \
} \
ykp_errno = YKP_ENOCFG; \
return 0; \
}
def_set_charfield(access_code,accCode,ACC_CODE_SIZE,,vcheck_all)
def_set_charfield(fixed,fixed,FIXED_SIZE,cfg->ykcore_config.fixedSize = max_chars,vcheck_all)
def_set_charfield(uid,uid,UID_SIZE,,vcheck_all)
#define def_set_tktflag(type,vcheck) \
int ykp_set_tktflag_ ## type(YKP_CONFIG *cfg, bool state) \
{ \
if (cfg) { \
if (!vcheck(cfg)) { \
ykp_errno = YKP_EYUBIKEYVER; \
return 0; \
} \
if (state) \
cfg->ykcore_config.tktFlags |= TKTFLAG_ ## type; \
else \
cfg->ykcore_config.tktFlags &= ~TKTFLAG_ ## type; \
return 1; \
} \
ykp_errno = YKP_ENOCFG; \
return 0; \
}
#define def_set_cfgflag(type,vcheck) \
int ykp_set_cfgflag_ ## type(YKP_CONFIG *cfg, bool state) \
{ \
if (cfg) { \
if (!vcheck(cfg)) { \
ykp_errno = YKP_EYUBIKEYVER; \
return 0; \
} \
if (state) \
cfg->ykcore_config.cfgFlags |= CFGFLAG_ ## type; \
else \
cfg->ykcore_config.cfgFlags &= ~CFGFLAG_ ## type; \
return 1; \
} \
ykp_errno = YKP_ENOCFG; \
return 0; \
}
#define def_set_extflag(type,vcheck) \
int ykp_set_extflag_ ## type(YKP_CONFIG *cfg, bool state) \
{ \
if (cfg) { \
if (!vcheck(cfg)) { \
ykp_errno = YKP_EYUBIKEYVER; \
return 0; \
} \
if (state) \
cfg->ykcore_config.extFlags |= EXTFLAG_ ## type; \
else \
cfg->ykcore_config.extFlags &= ~EXTFLAG_ ## type; \
return 1; \
} \
ykp_errno = YKP_ENOCFG; \
return 0; \
}
def_set_tktflag(TAB_FIRST,vcheck_all)
def_set_tktflag(APPEND_TAB1,vcheck_all)
def_set_tktflag(APPEND_TAB2,vcheck_all)
def_set_tktflag(APPEND_DELAY1,vcheck_all)
def_set_tktflag(APPEND_DELAY2,vcheck_all)
def_set_tktflag(APPEND_CR,vcheck_all)
def_set_tktflag(PROTECT_CFG2,vcheck_no_v1)
def_set_tktflag(OATH_HOTP,vcheck_v21_or_greater)
def_set_tktflag(CHAL_RESP,vcheck_v22_or_greater)
def_set_cfgflag(SEND_REF,vcheck_all)
def_set_cfgflag(TICKET_FIRST,vcheck_v1)
def_set_cfgflag(PACING_10MS,vcheck_all)
def_set_cfgflag(PACING_20MS,vcheck_all)
def_set_cfgflag(ALLOW_HIDTRIG,vcheck_v1)
def_set_cfgflag(STATIC_TICKET,vcheck_all)
def_set_cfgflag(SHORT_TICKET,vcheck_no_v1)
def_set_cfgflag(STRONG_PW1,vcheck_no_v1)
def_set_cfgflag(STRONG_PW2,vcheck_no_v1)
def_set_cfgflag(MAN_UPDATE,vcheck_no_v1)
def_set_cfgflag(OATH_HOTP8,vcheck_v21_or_greater)
def_set_cfgflag(OATH_FIXED_MODHEX1,vcheck_v21_or_greater)
def_set_cfgflag(OATH_FIXED_MODHEX2,vcheck_v21_or_greater)
def_set_cfgflag(OATH_FIXED_MODHEX,vcheck_v21_or_greater)
def_set_cfgflag(CHAL_YUBICO,vcheck_v22_or_greater)
def_set_cfgflag(CHAL_HMAC,vcheck_v22_or_greater)
def_set_cfgflag(HMAC_LT64,vcheck_v22_or_greater)
def_set_cfgflag(CHAL_BTN_TRIG,vcheck_v22_or_greater)
def_set_extflag(SERIAL_BTN_VISIBLE,vcheck_v22_or_greater)
def_set_extflag(SERIAL_USB_VISIBLE,vcheck_v22_or_greater)
def_set_extflag(SERIAL_API_VISIBLE,vcheck_v22_or_greater)
const char str_key_value_separator[] = ": ";
const char str_hex_prefix[] = "h:";
const char str_modhex_prefix[] = "m:";
const char str_fixed[] = "fixed";
const char str_uid[] = "uid";
const char str_key[] = "key";
const char str_acc_code[] = "acc_code";
const char str_oath_imf[] = "OATH IMF";
const char str_flags_separator[] = "|";
struct map_st {
uint8_t flag;
const char *flag_text;
bool (*vcheck)(const YKP_CONFIG *cfg);
unsigned char tkt_context;
};
const char str_ticket_flags[] = "ticket_flags";
struct map_st ticket_flags_map[] = {
{ TKTFLAG_TAB_FIRST, "TAB_FIRST", vcheck_all, 0 },
{ TKTFLAG_APPEND_TAB1, "APPEND_TAB1", vcheck_all, 0 },
{ TKTFLAG_APPEND_TAB2, "APPEND_TAB2", vcheck_all, 0 },
{ TKTFLAG_APPEND_DELAY1, "APPEND_DELAY1", vcheck_all, 0 },
{ TKTFLAG_APPEND_DELAY2, "APPEND_DELAY2", vcheck_all, 0 },
{ TKTFLAG_APPEND_CR, "APPEND_CR", vcheck_all, 0 },
{ TKTFLAG_PROTECT_CFG2, "PROTECT_CFG2", vcheck_no_v1, 0 },
{ TKTFLAG_OATH_HOTP, "OATH_HOTP", vcheck_v21_or_greater, 0 },
{ TKTFLAG_CHAL_RESP, "CHAL_RESP", vcheck_v22_or_greater, 0 },
{ 0, "", 0 }
};
const char str_config_flags[] = "config_flags";
struct map_st config_flags_map[] = {
/*
Values used to pretty-print a YKP_CONFIG in ykp_write_config().
The fourth field is a (tkt)context in which this (cfg)flag is valid.
Some cfgFlags share the same value (e.g. CFGFLAG_STRONG_PW2 and
CFGFLAG_OATH_FIXED_MODHEX2, both 0x40). Obvioulsy, STRONG_PW2 is not
in effect when we do OATH, so by setting tkt_context to TKTFLAG_OATH_HOTP
and having the OATH flags before STRONG_PW2 in this struct we will show
cfgFlag 0x40 as OATH_FIXED_MODHEX2 and not STRONG_PW2 if TKTFLAG_OATH_HOTP
is set.
*/
{ CFGFLAG_CHAL_YUBICO, "CHAL_YUBICO", vcheck_v22_or_greater, TKTFLAG_CHAL_RESP },
{ CFGFLAG_CHAL_HMAC, "CHAL_HMAC", vcheck_v22_or_greater, TKTFLAG_CHAL_RESP },
{ CFGFLAG_HMAC_LT64, "HMAC_LT64", vcheck_v22_or_greater, TKTFLAG_CHAL_RESP },
{ CFGFLAG_CHAL_BTN_TRIG, "CHAL_BTN_TRIG", vcheck_v22_or_greater, TKTFLAG_CHAL_RESP },
{ CFGFLAG_OATH_HOTP8, "OATH_HOTP8", vcheck_v21_or_greater, TKTFLAG_OATH_HOTP },
{ CFGFLAG_OATH_FIXED_MODHEX1, "OATH_FIXED_MODHEX1", vcheck_v21_or_greater, TKTFLAG_OATH_HOTP },
{ CFGFLAG_OATH_FIXED_MODHEX2, "OATH_FIXED_MODHEX2", vcheck_v21_or_greater, TKTFLAG_OATH_HOTP },
{ CFGFLAG_OATH_FIXED_MODHEX, "OATH_FIXED_MODHEX", vcheck_v21_or_greater, TKTFLAG_OATH_HOTP },
{ CFGFLAG_SEND_REF, "SEND_REF", vcheck_all, 0 },
{ CFGFLAG_TICKET_FIRST, "TICKET_FIRST", vcheck_v1, 0 },
{ CFGFLAG_PACING_10MS, "PACING_10MS", vcheck_all, 0 },
{ CFGFLAG_PACING_20MS, "PACING_20MS", vcheck_all, 0 },
{ CFGFLAG_ALLOW_HIDTRIG, "ALLOW_HIDTRIG", vcheck_v1, 0 },
{ CFGFLAG_STATIC_TICKET, "STATIC_TICKET", vcheck_all, 0 },
{ CFGFLAG_SHORT_TICKET, "SHORT_TICKET", vcheck_no_v1, 0 },
{ CFGFLAG_STRONG_PW1, "STRONG_PW1", vcheck_no_v1, 0 },
{ CFGFLAG_STRONG_PW2, "STRONG_PW2", vcheck_no_v1, 0 },
{ CFGFLAG_MAN_UPDATE, "MAN_UPDATE", vcheck_no_v1, 0 },
{ 0, "" }
};
const char str_extended_flags[] = "extended_flags";
struct map_st extended_flags_map[] = {
{ EXTFLAG_SERIAL_BTN_VISIBLE, "SERIAL_BTN_VISIBLE", vcheck_v22_or_greater, 0 },
{ EXTFLAG_SERIAL_USB_VISIBLE, "SERIAL_USB_VISIBLE", vcheck_v22_or_greater, 0 },
{ EXTFLAG_SERIAL_API_VISIBLE, "SERIAL_API_VISIBLE", vcheck_v22_or_greater, 0 },
{ 0, "", 0 }
};
int ykp_write_config(const YKP_CONFIG *cfg,
int (*writer)(const char *buf, size_t count,
void *userdata),
void *userdata)
{
if (cfg) {
char buffer[256];
struct map_st *p;
unsigned char t_flags;
bool key_bits_in_uid = false;
/* for OATH-HOTP and HMAC-SHA1 challenge response, there is four bytes
* additional key data in the uid field
*/
key_bits_in_uid = (_get_supported_key_length(cfg) == 20);
/* fixed: */
writer(str_fixed, strlen(str_fixed), userdata);
writer(str_key_value_separator,
strlen(str_key_value_separator),
userdata);
/* XXX print OATH-HOTP fixed differently based on oath-fixed-modhex etc. */
writer(str_modhex_prefix,
strlen(str_key_value_separator),
userdata);
yubikey_modhex_encode(buffer, (char *)cfg->ykcore_config.fixed, cfg->ykcore_config.fixedSize);
writer(buffer, strlen(buffer), userdata);
writer("\n", 1, userdata);
/* uid: */
writer(str_uid, strlen(str_uid), userdata);
writer(str_key_value_separator,
strlen(str_key_value_separator),
userdata);
if (key_bits_in_uid) {
writer("n/a", 3, userdata);
} else {
writer(str_hex_prefix,
strlen(str_key_value_separator),
userdata);
yubikey_hex_encode(buffer, (char *)cfg->ykcore_config.uid, UID_SIZE);
writer(buffer, strlen(buffer), userdata);
}
writer("\n", 1, userdata);
/* key: */
writer(str_key, strlen(str_key), userdata);
writer(str_key_value_separator,
strlen(str_key_value_separator),
userdata);
writer(str_hex_prefix,
strlen(str_key_value_separator),
userdata);
yubikey_hex_encode(buffer, (char *)cfg->ykcore_config.key, KEY_SIZE);
if (key_bits_in_uid) {
yubikey_hex_encode(buffer + KEY_SIZE * 2, (char *)cfg->ykcore_config.uid, 4);
}
writer(buffer, strlen(buffer), userdata);
writer("\n", 1, userdata);
/* acc_code: */
writer(str_acc_code, strlen(str_acc_code), userdata);
writer(str_key_value_separator,
strlen(str_key_value_separator),
userdata);
writer(str_hex_prefix,
strlen(str_key_value_separator),
userdata);
yubikey_hex_encode(buffer, (char *)cfg->ykcore_config.accCode, ACC_CODE_SIZE);
writer(buffer, strlen(buffer), userdata);
writer("\n", 1, userdata);
/* OATH IMF: */
if ((cfg->ykcore_config.tktFlags & TKTFLAG_OATH_HOTP) == TKTFLAG_OATH_HOTP &&
vcheck_v22_or_greater(cfg)) {
writer(str_oath_imf, strlen(str_oath_imf), userdata);
writer(str_key_value_separator,
strlen(str_key_value_separator),
userdata);
writer(str_hex_prefix,
strlen(str_hex_prefix),
userdata);
sprintf(buffer, "%lx", ykp_get_oath_imf(cfg));
writer(buffer, strlen(buffer), userdata);
writer("\n", 1, userdata);
}
/* ticket_flags: */
buffer[0] = '\0';
for (p = ticket_flags_map; p->flag; p++) {
if ((cfg->ykcore_config.tktFlags & p->flag) == p->flag
&& p->vcheck(cfg)) {
if (*buffer) {
strcat(buffer, str_flags_separator);
strcat(buffer, p->flag_text);
} else {
strcpy(buffer, p->flag_text);
}
}
}
writer(str_ticket_flags, strlen(str_ticket_flags), userdata);
writer(str_key_value_separator,
strlen(str_key_value_separator),
userdata);
writer(buffer, strlen(buffer), userdata);
writer("\n", 1, userdata);
/* config_flags: */
buffer[0] = '\0';
t_flags = cfg->ykcore_config.cfgFlags;
for (p = config_flags_map; p->flag; p++) {
if ((t_flags & p->flag) == p->flag
&& p->vcheck(cfg)
&& (cfg->ykcore_config.tktFlags & p->tkt_context) == p->tkt_context) {
if (*buffer) {
strcat(buffer, str_flags_separator);
strcat(buffer, p->flag_text);
} else {
strcpy(buffer, p->flag_text);
}
/* make sure we don't show more than one cfgFlag per value -
some cfgflags share value in different contexts
*/
t_flags -= p->flag;
}
}
writer(str_config_flags, strlen(str_config_flags), userdata);
writer(str_key_value_separator,
strlen(str_key_value_separator),
userdata);
writer(buffer, strlen(buffer), userdata);
writer("\n", 1, userdata);
/* extended_flags: */
buffer[0] = '\0';
for (p = extended_flags_map; p->flag; p++) {
if ((cfg->ykcore_config.extFlags & p->flag) == p->flag
&& p->vcheck(cfg)) {
if (*buffer) {
strcat(buffer, str_flags_separator);
strcat(buffer, p->flag_text);
} else {
strcpy(buffer, p->flag_text);
}
}
}
writer(str_extended_flags, strlen(str_extended_flags), userdata);
writer(str_key_value_separator,
strlen(str_key_value_separator),
userdata);
writer(buffer, strlen(buffer), userdata);
writer("\n", 1, userdata);
return 1;
}
return 0;
}
int ykp_read_config(YKP_CONFIG *cfg,
int (*reader)(char *buf, size_t count,
void *userdata),
void *userdata)
{
ykp_errno = YKP_ENOTYETIMPL;
return 0;
}
YK_CONFIG *ykp_core_config(YKP_CONFIG *cfg)
{
if (cfg)
return &cfg->ykcore_config;
ykp_errno = YKP_ENOCFG;
return 0;
}
int ykp_config_num(YKP_CONFIG *cfg)
{
if (cfg)
return cfg->configuration_number;
ykp_errno = YKP_ENOCFG;
return 0;
}
int * const _ykp_errno_location(void)
{
static int tsd_init = 0;
static int nothread_errno = 0;
YK_DEFINE_TSD_METADATA(errno_key);
int rc = 0;
if (tsd_init == 0) {
if ((rc = YK_TSD_INIT(errno_key, free)) == 0) {
YK_TSD_SET(errno_key, calloc(1, sizeof(int)));
tsd_init = 1;
} else {
tsd_init = -1;
}
}
if (tsd_init == 1) {
return YK_TSD_GET(int *, errno_key);
}
return ¬hread_errno;
}
static const char *errtext[] = {
"",
"not yet implemented",
"no configuration structure given",
"option not available for this Yubikey version",
"too old yubikey for this operation",
"invalid configuration number (this is a programming error)",
"invalid option/argument value",
};
const char *ykp_strerror(int errnum)
{
if (errnum < sizeof(errtext)/sizeof(errtext[0]))
return errtext[errnum];
return NULL;
}