Mirror of BoringSSL (grpc依赖)
https://boringssl.googlesource.com/boringssl
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69 lines
2.7 KiB
69 lines
2.7 KiB
/* Copyright (c) 2021, Google Inc. |
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* |
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* Permission to use, copy, modify, and/or distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
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#include <openssl/base.h> |
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#include <functional> |
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#include <memory> |
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#include <vector> |
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#include <openssl/span.h> |
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namespace bssl { |
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namespace acvp { |
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// kMaxArgs is the maximum number of arguments (including the function name) |
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// that an ACVP request can contain. |
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constexpr size_t kMaxArgs = 8; |
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// kMaxNameLength is the maximum length of a function name in an ACVP request. |
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constexpr size_t kMaxNameLength = 30; |
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// RequestBuffer holds various buffers needed for parsing an ACVP request. It |
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// can be reused between requests. |
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class RequestBuffer { |
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public: |
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virtual ~RequestBuffer(); |
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static std::unique_ptr<RequestBuffer> New(); |
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}; |
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// ParseArgsFromFd returns a span of arguments, the first of which is the name |
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// of the requested function, from |fd|. The return values point into |buffer| |
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// and so must not be used after |buffer| has been freed or reused for a |
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// subsequent call. It returns an empty span on error, because std::optional |
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// is still too new. |
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Span<const Span<const uint8_t>> ParseArgsFromFd(int fd, RequestBuffer *buffer); |
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// WriteReplyToFd writes a reply to the given file descriptor. |
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bool WriteReplyToFd(int fd, const std::vector<Span<const uint8_t>> &spans); |
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// ReplyCallback is the type of a callback that writes a reply to an ACVP |
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// request. |
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typedef std::function<bool(const std::vector<Span<const uint8_t>> &)> |
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ReplyCallback; |
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// Handler is the type of a function that handles a specific ACVP request. If |
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// successful it will call |write_reply| with the response arguments and return |
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// |write_reply|'s return value. Otherwise it will return false. The given args |
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// must not include the name at the beginning. |
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typedef bool (*Handler)(const Span<const uint8_t> args[], |
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ReplyCallback write_reply); |
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// FindHandler returns a |Handler| that can process the given arguments, or logs |
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// a reason and returns |nullptr| if none is found. |
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Handler FindHandler(Span<const Span<const uint8_t>> args); |
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} // namespace acvp |
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} // namespace bssl
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