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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 00:53:35 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 00:53:35 +0000 |
commit | 69c6a41ffb878ef98c9378ed4b1634a404cfaa7f (patch) | |
tree | b2a4f704565d62fbb129ab9dc3b35977c50e6e7f /src/libdnssec/binary.c | |
parent | Initial commit. (diff) | |
download | knot-upstream.tar.xz knot-upstream.zip |
Adding upstream version 2.7.6.upstream/2.7.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/libdnssec/binary.c')
-rw-r--r-- | src/libdnssec/binary.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/libdnssec/binary.c b/src/libdnssec/binary.c new file mode 100644 index 0000000..a57b421 --- /dev/null +++ b/src/libdnssec/binary.c @@ -0,0 +1,169 @@ +/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <assert.h> +#include <string.h> + +#include "libdnssec/binary.h" +#include "libdnssec/error.h" +#include "libdnssec/shared/shared.h" + +// Workaround for symbol redefinition if linked statically. +#define base64_encode base64encode +#define base64_decode base64decode +#define base64_encode_alloc base64encodealloc +#define base64_decode_alloc base64decodealloc +#include "contrib/base64.c" + +/* -- public API ----------------------------------------------------------- */ + +_public_ +int dnssec_binary_alloc(dnssec_binary_t *data, size_t size) +{ + if (!data || size == 0) { + return DNSSEC_EINVAL; + } + + uint8_t *new_data = calloc(1, size); + if (!new_data) { + return DNSSEC_ENOMEM; + } + + data->data = new_data; + data->size = size; + + return DNSSEC_EOK; +} + +_public_ +void dnssec_binary_free(dnssec_binary_t *binary) +{ + if (!binary) { + return; + } + + free(binary->data); + clear_struct(binary); +} + +_public_ +int dnssec_binary_dup(const dnssec_binary_t *from, dnssec_binary_t *to) +{ + if (!from || !to) { + return DNSSEC_EINVAL; + } + + uint8_t *copy = malloc(from->size); + if (copy == NULL) { + return DNSSEC_ENOMEM; + } + + memmove(copy, from->data, from->size); + + to->size = from->size; + to->data = copy; + + return DNSSEC_EOK; +} + +_public_ +int dnssec_binary_resize(dnssec_binary_t *data, size_t new_size) +{ + if (!data) { + return DNSSEC_EINVAL; + } + + uint8_t *new_data = realloc(data->data, new_size); + if (new_size > 0 && new_data == NULL) { + return DNSSEC_ENOMEM; + } + + data->data = new_data; + data->size = new_size; + + return DNSSEC_EOK; +} + +_public_ +int dnssec_binary_cmp(const dnssec_binary_t *one, const dnssec_binary_t *two) +{ + if (one == two) { + return 0; + } + + uint8_t *data_one = one && one->size > 0 ? one->data : NULL; + uint8_t *data_two = two && two->size > 0 ? two->data : NULL; + + if (data_one == data_two) { + return 0; + } else if (data_one == NULL) { + return -1; + } else if (data_two == NULL) { + return +1; + } + + size_t min_size = one->size <= two->size ? one->size : two->size; + int cmp = memcmp(data_one, data_two, min_size); + if (cmp != 0) { + return cmp; + } else if (one->size == two->size) { + return 0; + } else if (one->size < two->size) { + return -1; + } else { + return +1; + } +} + +_public_ +int dnssec_binary_from_base64(const dnssec_binary_t *base64, + dnssec_binary_t *binary) +{ + if (!base64 || !binary) { + return DNSSEC_EINVAL; + } + + uint8_t *data; + int32_t size = base64_decode_alloc(base64->data, base64->size, &data); + if (size < 0) { + return DNSSEC_EINVAL; + } + + binary->data = data; + binary->size = size; + + return DNSSEC_EOK; +} + +_public_ +int dnssec_binary_to_base64(const dnssec_binary_t *binary, + dnssec_binary_t *base64) +{ + if (!binary || !base64) { + return DNSSEC_EINVAL; + } + + uint8_t *data; + int32_t size = base64_encode_alloc(binary->data, binary->size, &data); + if (size < 0) { + return DNSSEC_EINVAL; + } + + base64->data = data; + base64->size = size; + + return DNSSEC_EOK; +} |