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Moved base64 transform and validation functions.

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This commit is contained in:
Jari Sundell
2026-06-03 23:37:01 +02:00
committed by GitHub
parent f1cfe8ad72
commit a5a96236df
5 changed files with 13 additions and 59 deletions
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src/utils/base64.cc
-47
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@@ -1,7 +1,6 @@
#include "base64.h"
#include <string>
#include <openssl/evp.h>
namespace utils {
@@ -72,50 +71,4 @@ decode_base64(const std::string& input) {
return decodedBytes;
}
// TODO: Move to torrent::utils.
std::optional<std::vector<uint8_t>>
base64_to_vector_unsafe(const std::string& src) {
if (src.empty())
return std::vector<uint8_t>{};
if (src.length() % 4)
return std::nullopt;
std::vector<uint8_t> bytes((src.length() * 3) / 4);
int decoded_len = EVP_DecodeBlock(bytes.data(), reinterpret_cast<const uint8_t*>(src.data()), src.length());
if (decoded_len <= 0)
return std::nullopt;
if (src.back() == '=')
decoded_len--;
if (src.length() > 1 && src[src.length() - 2] == '=')
decoded_len--;
// If the input contains extra padding characters, this could cause negative decoded_len.
if (decoded_len < 0)
return std::nullopt;
bytes.resize(decoded_len);
return bytes;
}
std::string
openssl_base64_encode(const std::string& src) {
if (src.empty()) return {};
std::string result((4 * ((src.size() + 2) / 3)), '\0');
int actual_length = EVP_EncodeBlock(reinterpret_cast<unsigned char*>(result.data()),
reinterpret_cast<const unsigned char*>(src.data()),
src.size());
result.resize(actual_length);
return result;
}
} // namespace utils