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Add deep freeze feature (XLS-77d) (#5187)

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- spec: XRPLF/XRPL-Standards#220
- amendment: "DeepFreeze"
- implemented deep freeze spec to allow token issuers to prevent currency holders from being able to acquire more of these tokens.
- in combination with normal freeze, deep freeze effectively prevents any balance trust line balance change of a currency holder (except direct issuer <-> holder payments).
- added 2 new invariant checks to verify that deep freeze cannot be enacted without normal freeze and transfer is not frozen.
- made some fixes to existing freeze handling.

Co-authored-by: Ed Hennis <ed@ripple.com>
Co-authored-by: Howard Hinnant <howard.hinnant@gmail.com>
This commit is contained in:
Vlad
2025-01-31 18:40:33 +00:00
committed by GitHub
parent 1b75dc8bcd
commit 33e1c42599
21 changed files with 2479 additions and 49 deletions
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10
include/xrpl/protocol/LedgerFormats.h
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@@ -160,10 +160,12 @@ enum LedgerSpecificFlags {
lsfHighAuth = 0x00080000,
lsfLowNoRipple = 0x00100000,
lsfHighNoRipple = 0x00200000,
lsfLowFreeze = 0x00400000, // True, low side has set freeze flag
lsfHighFreeze = 0x00800000, // True, high side has set freeze flag
lsfAMMNode = 0x01000000, // True, trust line to AMM. Used by client
// apps to identify payments via AMM.
lsfLowFreeze = 0x00400000, // True, low side has set freeze flag
lsfHighFreeze = 0x00800000, // True, high side has set freeze flag
lsfLowDeepFreeze = 0x02000000, // True, low side has set deep freeze flag
lsfHighDeepFreeze = 0x04000000, // True, high side has set deep freeze flag
lsfAMMNode = 0x01000000, // True, trust line to AMM. Used by client
// apps to identify payments via AMM.
// ltSIGNER_LIST
lsfOneOwnerCount = 0x00010000, // True, uses only one OwnerCount