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The XRP Ledger utilizes an account model. Unlike systems based on a UTXO model, XRP Ledger accounts are first-class objects. This design choice allows the XRP Ledger to offer rich functionality, including the ability to own objects (offers, escrows, checks, signer lists) as well as other advanced features, such as key rotation and configurable multi-signing without needing to change a destination address. The trade-off is that accounts must be stored on ledger. The XRP Ledger applies reserve requirements, in XRP, to protect the shared global ledger from growing excessively large as the result of spam or malicious usage. Prior to this commit, accounts had been permanent objects; once created, they could never be deleted. This commit introduces a new amendment "DeletableAccounts" which, if enabled, will allow account objects to be deleted by executing the new "AccountDelete" transaction. Any funds remaining in the account will be transferred to an account specified in the deletion transaction. The amendment changes the mechanics of account creation; previously a new account would have an initial sequence number of 1. Accounts created after the amendment will have an initial sequence number that is equal to the ledger in which the account was created. Accounts can only be deleted if they are not associated with any obligations (like RippleStates, Escrows, or PayChannels) and if the current ledger sequence number exceeds the account's sequence number by at least 256 so that, if recreated, the account can be protected from transaction replay.
81 lines
2.3 KiB
C++
81 lines
2.3 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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Copyright (c) 2012, 2013 Ripple Labs Inc.
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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
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OR 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_TXFORMATS_H_INCLUDED
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#define RIPPLE_PROTOCOL_TXFORMATS_H_INCLUDED
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#include <ripple/protocol/KnownFormats.h>
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namespace ripple {
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/** Transaction type identifiers.
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These are part of the binary message format.
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@ingroup protocol
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*/
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enum TxType
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{
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ttINVALID = -1,
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ttPAYMENT = 0,
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ttESCROW_CREATE = 1,
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ttESCROW_FINISH = 2,
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ttACCOUNT_SET = 3,
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ttESCROW_CANCEL = 4,
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ttREGULAR_KEY_SET = 5,
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ttNICKNAME_SET = 6, // open
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ttOFFER_CREATE = 7,
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ttOFFER_CANCEL = 8,
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no_longer_used = 9,
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ttTICKET_CREATE = 10,
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ttTICKET_CANCEL = 11,
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ttSIGNER_LIST_SET = 12,
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ttPAYCHAN_CREATE = 13,
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ttPAYCHAN_FUND = 14,
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ttPAYCHAN_CLAIM = 15,
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ttCHECK_CREATE = 16,
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ttCHECK_CASH = 17,
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ttCHECK_CANCEL = 18,
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ttDEPOSIT_PREAUTH = 19,
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ttTRUST_SET = 20,
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ttACCOUNT_DELETE = 21,
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ttAMENDMENT = 100,
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ttFEE = 101,
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};
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/** Manages the list of known transaction formats.
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*/
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class TxFormats : public KnownFormats <TxType>
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{
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private:
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/** Create the object.
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This will load the object with all the known transaction formats.
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*/
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TxFormats ();
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public:
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static TxFormats const& getInstance ();
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};
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} // ripple
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#endif
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