From e5fc00e506806f06bde32e9334fdec57dd8cb86d Mon Sep 17 00:00:00 2001 From: dec05eba Date: Tue, 27 Jul 2021 20:24:36 +0200 Subject: Implement new 4chan captcha --- external/cppcodec/base64_rfc4648.hpp | 73 ++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 external/cppcodec/base64_rfc4648.hpp (limited to 'external') diff --git a/external/cppcodec/base64_rfc4648.hpp b/external/cppcodec/base64_rfc4648.hpp new file mode 100644 index 0000000..436bc9d --- /dev/null +++ b/external/cppcodec/base64_rfc4648.hpp @@ -0,0 +1,73 @@ +/** + * Copyright (C) 2015 Topology LP + * All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#ifndef CPPCODEC_BASE64_RFC4648 +#define CPPCODEC_BASE64_RFC4648 + +#include "detail/codec.hpp" +#include "detail/base64.hpp" + +namespace cppcodec { + +namespace detail { + +static constexpr const char base64_rfc4648_alphabet[] = { + 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', + 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', + 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', + 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', + '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/' +}; + +class base64_rfc4648 +{ +public: + template using codec_impl = stream_codec; + + static CPPCODEC_ALWAYS_INLINE constexpr size_t alphabet_size() { + static_assert(sizeof(base64_rfc4648_alphabet) == 64, "base64 alphabet must have 64 values"); + return sizeof(base64_rfc4648_alphabet); + } + static CPPCODEC_ALWAYS_INLINE constexpr char symbol(alphabet_index_t idx) + { + return base64_rfc4648_alphabet[idx]; + } + static CPPCODEC_ALWAYS_INLINE constexpr char normalized_symbol(char c) { return c; } + + static CPPCODEC_ALWAYS_INLINE constexpr bool generates_padding() { return true; } + static CPPCODEC_ALWAYS_INLINE constexpr bool requires_padding() { return true; } + static CPPCODEC_ALWAYS_INLINE constexpr char padding_symbol() { return '='; } + static CPPCODEC_ALWAYS_INLINE constexpr bool is_padding_symbol(char c) { return c == '='; } + static CPPCODEC_ALWAYS_INLINE constexpr bool is_eof_symbol(char c) { return c == '\0'; } + + // RFC4648 does not specify any whitespace being allowed in base64 encodings. + static CPPCODEC_ALWAYS_INLINE constexpr bool should_ignore(char) { return false; } +}; + +} // namespace detail + +using base64_rfc4648 = detail::codec>; + +} // namespace cppcodec + +#endif // CPPCODEC_BASE64_RFC4648 \ No newline at end of file -- cgit v1.2.3