Mirror of BoringSSL (grpc依赖)
https://boringssl.googlesource.com/boringssl
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70 lines
2.7 KiB
70 lines
2.7 KiB
4 years ago
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/* 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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