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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/cryptsetup/cryptsetup-tokens/cryptsetup-token-util.c | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/cryptsetup/cryptsetup-tokens/cryptsetup-token-util.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/cryptsetup/cryptsetup-tokens/cryptsetup-token-util.c b/src/cryptsetup/cryptsetup-tokens/cryptsetup-token-util.c new file mode 100644 index 0000000..e305d8b --- /dev/null +++ b/src/cryptsetup/cryptsetup-tokens/cryptsetup-token-util.c @@ -0,0 +1,84 @@ +/* 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; +} |