| Directory: | src/ |
|---|---|
| File: | src/base64.c |
| Date: | 2024-04-25 03:45:42 |
| Exec | Total | Coverage | |
|---|---|---|---|
| Lines: | 18 | 27 | 66.7% |
| Branches: | 3 | 12 | 25.0% |
| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2023 Egor Tensin <egor@tensin.name> | ||
| 3 | * This file is part of the "cimple" project. | ||
| 4 | * For details, see https://github.com/egor-tensin/cimple. | ||
| 5 | * Distributed under the MIT License. | ||
| 6 | */ | ||
| 7 | |||
| 8 | #include "base64.h" | ||
| 9 | #include "log.h" | ||
| 10 | |||
| 11 | #include <sodium.h> | ||
| 12 | |||
| 13 | #include <stddef.h> | ||
| 14 | #include <stdlib.h> | ||
| 15 | #include <string.h> | ||
| 16 | |||
| 17 | static const int base64_variant = sodium_base64_VARIANT_ORIGINAL; | ||
| 18 | |||
| 19 | 9180 | int base64_encode(const unsigned char *src, size_t src_len, char **_dst) | |
| 20 | { | ||
| 21 | 9180 | const size_t dst_len = sodium_base64_encoded_len(src_len, base64_variant); | |
| 22 | |||
| 23 | 9180 | char *dst = calloc(dst_len, 1); | |
| 24 |
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9180 | if (!dst) { |
| 25 | ✗ | log_errno("calloc"); | |
| 26 | ✗ | return -1; | |
| 27 | } | ||
| 28 | |||
| 29 | 9180 | sodium_bin2base64(dst, dst_len, src, src_len, base64_variant); | |
| 30 | |||
| 31 | 9180 | *_dst = dst; | |
| 32 | 9180 | return 0; | |
| 33 | } | ||
| 34 | |||
| 35 | 9180 | int base64_decode(const char *src, unsigned char **_dst, size_t *_dst_len) | |
| 36 | { | ||
| 37 | 9180 | const size_t src_len = strlen(src); | |
| 38 | 9180 | const size_t dst_max_len = src_len / 4 * 3; | |
| 39 | 9180 | size_t dst_len = 0; | |
| 40 | |||
| 41 | 9180 | unsigned char *dst = calloc(dst_max_len, 1); | |
| 42 |
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9180 | if (!dst) { |
| 43 | ✗ | log_errno("calloc"); | |
| 44 | ✗ | return -1; | |
| 45 | } | ||
| 46 | |||
| 47 | int ret = | ||
| 48 | 9180 | sodium_base642bin(dst, dst_max_len, src, src_len, NULL, &dst_len, NULL, base64_variant); | |
| 49 |
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9180 | if (ret < 0) { |
| 50 | ✗ | log_err("Couldn't parse base64-encoded string\n"); | |
| 51 | ✗ | goto free; | |
| 52 | } | ||
| 53 | |||
| 54 | 9180 | *_dst = dst; | |
| 55 | 9180 | *_dst_len = dst_len; | |
| 56 | 9180 | return ret; | |
| 57 | |||
| 58 | ✗ | free: | |
| 59 | ✗ | free(dst); | |
| 60 | |||
| 61 | ✗ | return ret; | |
| 62 | } | ||
| 63 |