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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "cryptsetup-token-util.h"
#include "string-util.h"
int crypt_dump_buffer_to_hex_string(
const char *buf,
size_t buf_size,
char **ret_dump_str) {
int r;
_cleanup_free_ char *dump_str = NULL;
assert(buf || !buf_size);
assert(ret_dump_str);
for (size_t i = 0; i < buf_size; i++) {
/* crypt_dump() breaks line after every
* 16th couple of chars in dumped hexstring */
r = strextendf_with_separator(
&dump_str,
(i && !(i % 16)) ? CRYPT_DUMP_LINE_SEP : " ",
"%02hhx", buf[i]);
if (r < 0)
return r;
}
*ret_dump_str = TAKE_PTR(dump_str);
return 0;
}
int crypt_dump_hex_string(const char *hex_str, char **ret_dump_str) {
int r;
size_t len;
_cleanup_free_ char *dump_str = NULL;
assert(hex_str);
assert(ret_dump_str);
len = strlen(hex_str) >> 1;
for (size_t i = 0; i < len; i++) {
/* crypt_dump() breaks line after every
* 16th couple of chars in dumped hexstring */
r = strextendf_with_separator(
&dump_str,
(i && !(i % 16)) ? CRYPT_DUMP_LINE_SEP : " ",
"%.2s", hex_str + (i<<1));
if (r < 0)
return r;
}
*ret_dump_str = TAKE_PTR(dump_str);
return 0;
}
int crypt_normalize_pin(const void *pin, size_t pin_size, char **ret_pin_string) {
_cleanup_free_ char *pin_string = NULL;
assert(pin || !pin_size);
assert(ret_pin_string);
if (!pin) {
*ret_pin_string = NULL;
return 0;
}
/* Refuse embedded NULL bytes, but allow trailing NULL */
if (memchr(pin, 0, pin_size - 1))
return -EINVAL;
/* Enforce trailing NULL byte if missing */
pin_string = memdup_suffix0(pin, pin_size);
if (!pin_string)
return -ENOMEM;
*ret_pin_string = TAKE_PTR(pin_string);
return 0;
}
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