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105 lines
3.0 KiB
C++
105 lines
3.0 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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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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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
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ANY 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
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef RIPPLE_PROTOCOL_EXPORTORIGINMEMO_H_INCLUDED
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#define RIPPLE_PROTOCOL_EXPORTORIGINMEMO_H_INCLUDED
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#include <xrpl/basics/Expected.h>
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#include <xrpl/protocol/Protocol.h>
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#include <xrpl/protocol/STTx.h>
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#include <xrpl/protocol/UintTypes.h>
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#include <cstdint>
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#include <optional>
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#include <string_view>
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namespace ripple::ExportOriginMemo {
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inline constexpr std::string_view memoType = "xahau/export";
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inline constexpr std::uint8_t version = 1;
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inline constexpr std::uint8_t allowedFlags = 0;
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inline constexpr std::size_t identityBytes = 42;
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inline constexpr std::size_t releaseBytes = 78;
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struct Origin
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{
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std::uint32_t sourceDomain;
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std::uint32_t targetDomain;
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uint256 transactionHash;
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bool
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operator==(Origin const&) const = default;
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};
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struct Anchor
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{
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LedgerIndex ledgerSequence;
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uint256 ledgerHash;
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bool
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operator==(Anchor const&) const = default;
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};
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struct Stamp
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{
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Origin origin;
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std::optional<Anchor> anchor;
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bool
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operator==(Stamp const&) const = default;
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};
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enum class Error {
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reservedMemoPresent,
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reservedMemoMissing,
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reservedMemoPosition,
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malformedMemo,
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unsupportedVersion,
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unsupportedFlags,
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localChecks
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};
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/** Return true when any Memo reserves the Export protocol MemoType. */
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bool
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hasReservedMemo(STTx const& tx);
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/** Append the canonical identity projection as the final Memo.
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Existing Memos remain byte-identical and in their original order. This
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function does not normalize transaction authorization fields; callers must
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supply the canonical unsigned multisign base.
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*/
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Expected<STTx, Error>
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identityForm(STTx const& base, Origin const& origin);
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/** Append the canonical release projection as the final Memo. */
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Expected<STTx, Error>
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releaseForm(STTx const& base, Origin const& origin, Anchor const& anchor);
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/** Parse one canonical final Export Memo. */
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Expected<Stamp, Error>
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parse(STTx const& tx);
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/** Replace a canonical release projection with its identity projection. */
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Expected<STTx, Error>
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projectIdentity(STTx const& stamped);
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} // namespace ripple::ExportOriginMemo
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#endif
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