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Merge remote-tracking branch 'origin/dev' into request-id-correlation

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This commit is contained in:
Nicholas Dudfield
2026-06-17 14:35:14 +07:00
parent 7ef50e4114 639ea34377
commit 65c6ad4ba3
101 changed files with 6924 additions and 1662 deletions
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8
include/xrpl/hook/Enum.h
View File

@@ -16,6 +16,7 @@
#define featureHooksUpdate1 "1"
#define featureHooksUpdate2 "1"
#define fix20250131 "1"
#define fixGuardDepth32 "1"
namespace hook_api {
struct Rules
{
@@ -319,7 +320,7 @@ namespace compare_mode {
enum compare_mode : uint32_t { EQUAL = 1, LESS = 2, GREATER = 4 };
}
enum hook_return_code : int64_t {
enum class hook_return_code : int64_t {
SUCCESS =
0, // return codes > 0 are reserved for hook apis to return "success"
OUT_OF_BOUNDS =
@@ -386,7 +387,7 @@ enum hook_return_code : int64_t {
TOO_MANY_NAMESPACES = -45
};
enum ExitType : uint8_t {
enum class ExitType : uint8_t {
UNSET = 0,
WASM_ERROR = 1,
ROLLBACK = 2,
@@ -443,6 +444,7 @@ getImportWhitelist(Rules const& rules)
enum GuardRulesVersion : uint64_t {
GuardRuleFix20250131 = 0x00000001,
GuardRuleDepth32 = 0x00000002,
};
inline uint64_t
@@ -451,6 +453,8 @@ getGuardRulesVersion(Rules const& rules)
uint64_t version = 0;
if (rules.enabled(fix20250131))
version |= GuardRuleFix20250131;
if (rules.enabled(fixGuardDepth32))
version |= GuardRuleDepth32;
return version;
}

21
include/xrpl/hook/Guard.h
View File

@@ -204,9 +204,13 @@ struct WasmBlkInf
}
// compute worst case execution time
inline uint64_t
compute_wce(const WasmBlkInf* blk, int level, bool* recursion_limit_reached)
compute_wce(
const WasmBlkInf* blk,
int level,
int max_level,
bool* recursion_limit_reached)
{
if (level > 16)
if (level > max_level)
{
*recursion_limit_reached = true;
return 0;
@@ -233,8 +237,8 @@ compute_wce(const WasmBlkInf* blk, int level, bool* recursion_limit_reached)
if (blk->children.size() > 0)
for (auto const& child : blk->children)
worst_case_execution +=
compute_wce(child, level + 1, recursion_limit_reached);
worst_case_execution += compute_wce(
child, level + 1, max_level, recursion_limit_reached);
if (parent == 0 ||
parent->iteration_bound ==
@@ -788,12 +792,17 @@ check_guard(
}
bool recursion_limit_reached = false;
uint64_t wce = compute_wce(&(*root), 0, &recursion_limit_reached);
int max_level = 16;
if (rulesVersion & hook_api::GuardRuleDepth32)
max_level = 32;
uint64_t wce =
compute_wce(&(*root), 0, max_level, &recursion_limit_reached);
if (recursion_limit_reached)
{
GUARDLOG(hook::log::NESTING_LIMIT)
<< "GuardCheck "
<< "Maximum allowable depth of blocks reached (16 levels). Flatten "
<< "Maximum allowable depth of blocks reached (" << max_level
<< " levels). Flatten "
"your loops and conditions!.\n";
return {};
}

109
include/xrpl/hook/Macro.h
View File

@@ -89,58 +89,69 @@
#define WASM_VAL_TYPE(T, b) CAT2(TYP_, T)
#define DECLARE_HOOK_FUNCTION(R, F, ...) \
R F(hook::HookContext& hookCtx, \
WasmEdge_CallingFrameContext const& frameCtx __VA_OPT__( \
COMMA __VA_ARGS__)); \
extern WasmEdge_Result WasmFunction##F( \
void* data_ptr, \
const WasmEdge_CallingFrameContext* frameCtx, \
const WasmEdge_Value* in, \
WasmEdge_Value* out); \
extern WasmEdge_ValType WasmFunctionParams##F[]; \
extern WasmEdge_ValType WasmFunctionResult##F[]; \
extern WasmEdge_FunctionTypeContext* WasmFunctionType##F; \
#define UNSIGNED_TYPE(T) std::make_unsigned_t<T>
#define DECLARE_HOOK_FUNCTION(R, F, ...) \
std::variant<UNSIGNED_TYPE(R), hook_api::hook_return_code> F( \
hook::HookContext& hookCtx, \
WasmEdge_CallingFrameContext const& frameCtx __VA_OPT__( \
COMMA __VA_ARGS__)); \
extern WasmEdge_Result WasmFunction##F( \
void* data_ptr, \
const WasmEdge_CallingFrameContext* frameCtx, \
const WasmEdge_Value* in, \
WasmEdge_Value* out); \
extern WasmEdge_ValType WasmFunctionParams##F[]; \
extern WasmEdge_ValType WasmFunctionResult##F[]; \
extern WasmEdge_FunctionTypeContext* WasmFunctionType##F; \
extern WasmEdge_String WasmFunctionName##F;
#define DEFINE_HOOK_FUNCTION(R, F, ...) \
WasmEdge_Result hook_api::WasmFunction##F( \
void* data_ptr, \
const WasmEdge_CallingFrameContext* frameCtx, \
const WasmEdge_Value* in, \
WasmEdge_Value* out) \
{ \
__VA_OPT__(int _stack = 0;) \
__VA_OPT__(FOR_VARS(VAR_ASSIGN, 2, __VA_ARGS__);) \
hook::HookContext* hookCtx = \
reinterpret_cast<hook::HookContext*>(data_ptr); \
R return_code = hook_api::F( \
*hookCtx, \
*const_cast<WasmEdge_CallingFrameContext*>(frameCtx) \
__VA_OPT__(COMMA STRIP_TYPES(__VA_ARGS__))); \
if (return_code == RC_ROLLBACK || return_code == RC_ACCEPT) \
return WasmEdge_Result_Terminate; \
out[0] = RET_ASSIGN(R, return_code); \
return WasmEdge_Result_Success; \
}; \
WasmEdge_ValType hook_api::WasmFunctionParams##F[] = { \
__VA_OPT__(FOR_VARS(WASM_VAL_TYPE, 0, __VA_ARGS__))}; \
WasmEdge_ValType hook_api::WasmFunctionResult##F[1] = { \
WASM_VAL_TYPE(R, dummy)}; \
WasmEdge_FunctionTypeContext* hook_api::WasmFunctionType##F = \
WasmEdge_FunctionTypeCreate( \
WasmFunctionParams##F, \
VA_NARGS(NULL __VA_OPT__(, __VA_ARGS__)), \
WasmFunctionResult##F, \
1); \
WasmEdge_String hook_api::WasmFunctionName##F = \
WasmEdge_StringCreateByCString(#F); \
R hook_api::F( \
hook::HookContext& hookCtx, \
WasmEdge_CallingFrameContext const& frameCtx __VA_OPT__( \
#define DEFINE_HOOK_FUNCTION(R, F, ...) \
WasmEdge_Result hook_api::WasmFunction##F( \
void* data_ptr, \
const WasmEdge_CallingFrameContext* frameCtx, \
const WasmEdge_Value* in, \
WasmEdge_Value* out) \
{ \
__VA_OPT__(int _stack = 0;) \
__VA_OPT__(FOR_VARS(VAR_ASSIGN, 2, __VA_ARGS__);) \
hook::HookContext* hookCtx = \
reinterpret_cast<hook::HookContext*>(data_ptr); \
auto const& return_code = hook_api::F( \
*hookCtx, \
*const_cast<WasmEdge_CallingFrameContext*>(frameCtx) \
__VA_OPT__(COMMA STRIP_TYPES(__VA_ARGS__))); \
if (std::holds_alternative<hook_api::hook_return_code>(return_code) && \
(std::get<hook_api::hook_return_code>(return_code) == \
RC_ROLLBACK || \
std::get<hook_api::hook_return_code>(return_code) == RC_ACCEPT)) \
return WasmEdge_Result_Terminate; \
out[0] = RET_ASSIGN( \
R, \
std::holds_alternative<UNSIGNED_TYPE(R)>(return_code) \
? std::get<UNSIGNED_TYPE(R)>(return_code) \
: R(std::get<hook_api::hook_return_code>(return_code))); \
return WasmEdge_Result_Success; \
}; \
WasmEdge_ValType hook_api::WasmFunctionParams##F[] = { \
__VA_OPT__(FOR_VARS(WASM_VAL_TYPE, 0, __VA_ARGS__))}; \
WasmEdge_ValType hook_api::WasmFunctionResult##F[1] = { \
WASM_VAL_TYPE(R, dummy)}; \
WasmEdge_FunctionTypeContext* hook_api::WasmFunctionType##F = \
WasmEdge_FunctionTypeCreate( \
WasmFunctionParams##F, \
VA_NARGS(NULL __VA_OPT__(, __VA_ARGS__)), \
WasmFunctionResult##F, \
1); \
WasmEdge_String hook_api::WasmFunctionName##F = \
WasmEdge_StringCreateByCString(#F); \
std::variant<UNSIGNED_TYPE(R), hook_api::hook_return_code> hook_api::F( \
hook::HookContext& hookCtx, \
WasmEdge_CallingFrameContext const& frameCtx __VA_OPT__( \
COMMA __VA_ARGS__))
#define HOOK_SETUP() \
using enum hook_api::hook_return_code; \
try \
{ \
[[maybe_unused]] ApplyContext& applyCtx = hookCtx.applyCtx; \
@@ -203,7 +214,7 @@
host_memory_ptr, \
guest_memory_length) \
{ \
int64_t bytes_written = 0; \
uint64_t bytes_written = 0; \
WRITE_WASM_MEMORY( \
bytes_written, \
guest_dst_ptr, \
@@ -272,7 +283,7 @@
data_ptr < (data_ptr_in)) \
return INTERNAL_ERROR; \
if (data_len == 0) \
return 0; \
return 0ULL; \
if ((write_ptr_in) == 0) \
return data_as_int64(data_ptr, data_len); \
if (data_len > (write_len_in)) \

82
include/xrpl/protocol/Feature.h
View File

@@ -33,35 +33,39 @@
*
* Steps required to add new features to the code:
*
* 1) In this file, increment `numFeatures` and add a uint256 declaration
* for the feature at the bottom
* 2) Add a uint256 definition for the feature to the corresponding source
* file (Feature.cpp). Use `registerFeature` to create the feature with
* the feature's name, `Supported::no`, and `VoteBehavior::DefaultNo`. This
* should be the only place the feature's name appears in code as a string.
* 3) Use the uint256 as the parameter to `view.rules.enabled()` to
* control flow into new code that this feature limits.
* 4) If the feature development is COMPLETE, and the feature is ready to be
* SUPPORTED, change the `registerFeature` parameter to Supported::yes.
* 5) When the feature is ready to be ENABLED, change the `registerFeature`
* parameter to `VoteBehavior::DefaultYes`.
* In general, any newly supported amendments (`Supported::yes`) should have
* a `VoteBehavior::DefaultNo` for at least one full release cycle. High
* priority bug fixes can be an exception to this rule of thumb.
* 1) Add the appropriate XRPL_FEATURE or XRPL_FIX macro definition for the
* feature to features.macro with the feature's name, `Supported::no`, and
* `VoteBehavior::DefaultNo`.
*
* 2) Use the generated variable name as the parameter to `view.rules.enabled()`
* to control flow into new code that this feature limits. (featureName or
* fixName)
*
* 3) If the feature development is COMPLETE, and the feature is ready to be
* SUPPORTED, change the macro parameter in features.macro to Supported::yes.
*
* 4) In general, any newly supported amendments (`Supported::yes`) should have
* a `VoteBehavior::DefaultNo` indefinitely so that external governance can
* make the decision on when to activate it. High priority bug fixes can be
* an exception to this rule. In such cases, ensure the fix has been
* clearly communicated to the community using appropriate channels,
* then change the macro parameter in features.macro to
* `VoteBehavior::DefaultYes`. The communication process is beyond
* the scope of these instructions.
*
*
* When a feature has been enabled for several years, the conditional code
* may be removed, and the feature "retired". To retire a feature:
* 1) Remove the uint256 declaration from this file.
* 2) MOVE the uint256 definition in Feature.cpp to the "retired features"
* section at the end of the file.
* 3) CHANGE the name of the variable to start with "retired".
* 4) CHANGE the parameters of the `registerFeature` call to `Supported::yes`
* and `VoteBehavior::DefaultNo`.
*
* 1) MOVE the macro definition in features.macro to the "retired features"
* section at the end of the file, and change the macro to XRPL_RETIRE.
*
* The feature must remain registered and supported indefinitely because it
* still exists in the ledger, but there is no need to vote for it because
* there's nothing to vote for. If it is removed completely from the code, any
* instances running that code will get amendment blocked. Removing the
* feature from the ledger is beyond the scope of these instructions.
* may exist in the Amendments object on ledger. There is no need to vote
* for it because there's nothing to vote for. If the feature definition is
* removed completely from the code, any instances running that code will get
* amendment blocked. Removing the feature from the ledger is beyond the scope
* of these instructions.
*
*/
@@ -76,11 +80,32 @@ allAmendments();
namespace detail {
#pragma push_macro("XRPL_FEATURE")
#undef XRPL_FEATURE
#pragma push_macro("XRPL_FIX")
#undef XRPL_FIX
#pragma push_macro("XRPL_RETIRE")
#undef XRPL_RETIRE
#define XRPL_FEATURE(name, supported, vote) +1
#define XRPL_FIX(name, supported, vote) +1
#define XRPL_RETIRE(name) +1
// This value SHOULD be equal to the number of amendments registered in
// Feature.cpp. Because it's only used to reserve storage, and determine how
// large to make the FeatureBitset, it MAY be larger. It MUST NOT be less than
// the actual number of amendments. A LogicError on startup will verify this.
static constexpr std::size_t numFeatures = 115;
static constexpr std::size_t numFeatures =
(0 +
#include <xrpl/protocol/detail/features.macro>
);
#undef XRPL_RETIRE
#pragma pop_macro("XRPL_RETIRE")
#undef XRPL_FIX
#pragma pop_macro("XRPL_FIX")
#undef XRPL_FEATURE
#pragma pop_macro("XRPL_FEATURE")
/** Amendments that this server supports and the default voting behavior.
Whether they are enabled depends on the Rules defined in the validated
@@ -320,12 +345,17 @@ foreachFeature(FeatureBitset bs, F&& f)
#undef XRPL_FEATURE
#pragma push_macro("XRPL_FIX")
#undef XRPL_FIX
#pragma push_macro("XRPL_RETIRE")
#undef XRPL_RETIRE
#define XRPL_FEATURE(name, supported, vote) extern uint256 const feature##name;
#define XRPL_FIX(name, supported, vote) extern uint256 const fix##name;
#define XRPL_RETIRE(name)
#include <xrpl/protocol/detail/features.macro>
#undef XRPL_RETIRE
#pragma pop_macro("XRPL_RETIRE")
#undef XRPL_FIX
#pragma pop_macro("XRPL_FIX")
#undef XRPL_FEATURE

1
include/xrpl/protocol/TER.h
View File

@@ -137,6 +137,7 @@ enum TEMcodes : TERUnderlyingType {
temXCHAIN_BRIDGE_NONDOOR_OWNER,
temXCHAIN_BRIDGE_BAD_MIN_ACCOUNT_CREATE_AMOUNT,
temXCHAIN_BRIDGE_BAD_REWARD_AMOUNT,
temXCHAIN_TOO_MANY_ATTESTATIONS, // RESERVED - not used
temHOOK_DATA_TOO_LARGE,
temEMPTY_DID,

49
include/xrpl/protocol/detail/features.macro
View File

@@ -23,6 +23,9 @@
#if !defined(XRPL_FIX)
#error "undefined macro: XRPL_FIX"
#endif
#if !defined(XRPL_RETIRE)
#error "undefined macro: XRPL_RETIRE"
#endif
// clang-format off
@@ -31,6 +34,10 @@
// If you add an amendment here, then do not forget to increment `numFeatures`
// in include/xrpl/protocol/Feature.h.
XRPL_FIX (HookMap, Supported::yes, VoteBehavior::DefaultYes)
XRPL_FIX (GuardDepth32, Supported::yes, VoteBehavior::DefaultNo)
XRPL_FEATURE(NamedHooks, Supported::yes, VoteBehavior::DefaultNo)
XRPL_FEATURE(IOURewardClaim, Supported::yes, VoteBehavior::DefaultNo)
XRPL_FIX (IOULockedBalanceInvariant, Supported::yes, VoteBehavior::DefaultNo)
XRPL_FIX (ImportIssuer, Supported::yes, VoteBehavior::DefaultYes)
XRPL_FEATURE(HookAPISerializedType240, Supported::yes, VoteBehavior::DefaultNo)
@@ -54,18 +61,18 @@ XRPL_FIX (FillOrKill, Supported::yes, VoteBehavior::DefaultYe
XRPL_FEATURE(DID, Supported::no, VoteBehavior::DefaultNo)
XRPL_FIX (DisallowIncomingV1, Supported::yes, VoteBehavior::DefaultYes)
XRPL_FEATURE(XChainBridge, Supported::no, VoteBehavior::DefaultNo)
XRPL_FEATURE(AMM, Supported::yes, VoteBehavior::DefaultNo)
XRPL_FEATURE(AMM, Supported::no, VoteBehavior::DefaultNo)
XRPL_FIX (ReducedOffersV1, Supported::yes, VoteBehavior::DefaultYes)
XRPL_FEATURE(HooksUpdate2, Supported::yes, VoteBehavior::DefaultNo);
XRPL_FEATURE(HookOnV2, Supported::yes, VoteBehavior::DefaultNo);
XRPL_FIX (HookAPI20251128, Supported::yes, VoteBehavior::DefaultYes);
XRPL_FIX (CronStacking, Supported::yes, VoteBehavior::DefaultYes);
XRPL_FEATURE(ExtendedHookState, Supported::yes, VoteBehavior::DefaultNo);
XRPL_FIX (InvalidTxFlags, Supported::yes, VoteBehavior::DefaultYes);
XRPL_FEATURE(Cron, Supported::yes, VoteBehavior::DefaultNo);
XRPL_FEATURE(IOUIssuerWeakTSH, Supported::yes, VoteBehavior::DefaultNo);
XRPL_FEATURE(DeepFreeze, Supported::yes, VoteBehavior::DefaultNo);
XRPL_FIX (ProvisionalDoubleThreading, Supported::yes, VoteBehavior::DefaultYes);
XRPL_FEATURE(HooksUpdate2, Supported::yes, VoteBehavior::DefaultNo)
XRPL_FEATURE(HookOnV2, Supported::yes, VoteBehavior::DefaultNo)
XRPL_FIX (HookAPI20251128, Supported::yes, VoteBehavior::DefaultYes)
XRPL_FIX (CronStacking, Supported::yes, VoteBehavior::DefaultYes)
XRPL_FEATURE(ExtendedHookState, Supported::yes, VoteBehavior::DefaultNo)
XRPL_FIX (InvalidTxFlags, Supported::yes, VoteBehavior::DefaultYes)
XRPL_FEATURE(Cron, Supported::yes, VoteBehavior::DefaultNo)
XRPL_FEATURE(IOUIssuerWeakTSH, Supported::yes, VoteBehavior::DefaultNo)
XRPL_FEATURE(DeepFreeze, Supported::yes, VoteBehavior::DefaultNo)
XRPL_FIX (ProvisionalDoubleThreading, Supported::yes, VoteBehavior::DefaultYes)
XRPL_FEATURE(Clawback, Supported::yes, VoteBehavior::DefaultNo)
XRPL_FIX (RewardClaimFlags, Supported::yes, VoteBehavior::DefaultYes)
XRPL_FEATURE(HookCanEmit, Supported::yes, VoteBehavior::DefaultNo)
@@ -149,4 +156,24 @@ XRPL_FIX (NFTokenDirV1, Supported::yes, VoteBehavior::Obsolete)
XRPL_FEATURE(NonFungibleTokensV1, Supported::yes, VoteBehavior::Obsolete)
XRPL_FEATURE(CryptoConditionsSuite, Supported::yes, VoteBehavior::Obsolete)
// The following amendments have been active for at least two years. Their
// pre-amendment code has been removed and the identifiers are deprecated.
// All known amendments and amendments that may appear in a validated
// ledger must be registered either here or above with the "active" amendments
XRPL_RETIRE(MultiSign)
XRPL_RETIRE(TrustSetAuth)
XRPL_RETIRE(FeeEscalation)
XRPL_RETIRE(PayChan)
XRPL_RETIRE(CryptoConditions)
XRPL_RETIRE(TickSize)
XRPL_RETIRE(fix1368)
XRPL_RETIRE(Escrow)
XRPL_RETIRE(fix1373)
XRPL_RETIRE(EnforceInvariants)
XRPL_RETIRE(SortedDirectories)
XRPL_RETIRE(fix1201)
XRPL_RETIRE(fix1512)
XRPL_RETIRE(fix1523)
XRPL_RETIRE(fix1528)
// clang-format on

4
include/xrpl/protocol/detail/ledger_entries.macro
View File

@@ -93,7 +93,7 @@ LEDGER_ENTRY(ltCHECK, 0x0043, Check, check, ({
*/
LEDGER_ENTRY(ltHOOK_DEFINITION, 'D', HookDefinition, hook_definition, ({
{sfHookHash, soeREQUIRED},
{sfHookOn, soeREQUIRED},
{sfHookOn, soeOPTIONAL},
{sfHookOnIncoming, soeOPTIONAL},
{sfHookOnOutgoing, soeOPTIONAL},
{sfHookCanEmit, soeOPTIONAL},
@@ -396,6 +396,8 @@ LEDGER_ENTRY(ltRIPPLE_STATE, 0x0072, RippleState, state, ({
{sfHighQualityOut, soeOPTIONAL},
{sfLockedBalance, soeOPTIONAL},
{sfLockCount, soeOPTIONAL},
{sfHighReward, soeOPTIONAL},
{sfLowReward, soeOPTIONAL},
}))
/** The ledger object which lists the network's fee settings.

5
include/xrpl/protocol/detail/sfields.macro
View File

@@ -257,6 +257,7 @@ TYPED_SFIELD(sfPrice, AMOUNT, 28)
TYPED_SFIELD(sfSignatureReward, AMOUNT, 29)
TYPED_SFIELD(sfMinAccountCreateAmount, AMOUNT, 30)
TYPED_SFIELD(sfLPTokenBalance, AMOUNT, 31)
TYPED_SFIELD(sfTrustLineRewardAccumulator,AMOUNT, 99)
// variable length (common)
TYPED_SFIELD(sfPublicKey, VL, 1)
@@ -292,6 +293,7 @@ TYPED_SFIELD(sfAssetClass, VL, 29)
TYPED_SFIELD(sfProvider, VL, 30)
TYPED_SFIELD(sfMPTokenMetadata, VL, 31)
TYPED_SFIELD(sfCredentialType, VL, 32)
TYPED_SFIELD(sfHookName, VL, 97)
TYPED_SFIELD(sfRemarkValue, VL, 98)
TYPED_SFIELD(sfRemarkName, VL, 99)
@@ -340,6 +342,7 @@ TYPED_SFIELD(sfLockingChainIssue, ISSUE, 1)
TYPED_SFIELD(sfIssuingChainIssue, ISSUE, 2)
TYPED_SFIELD(sfAsset, ISSUE, 3)
TYPED_SFIELD(sfAsset2, ISSUE, 4)
TYPED_SFIELD(sfClaimCurrency, ISSUE, 5)
// bridge
TYPED_SFIELD(sfXChainBridge, XCHAIN_BRIDGE, 1)
@@ -386,6 +389,8 @@ UNTYPED_SFIELD(sfImportVLKey, OBJECT, 94)
UNTYPED_SFIELD(sfActiveValidator, OBJECT, 95)
UNTYPED_SFIELD(sfGenesisMint, OBJECT, 96)
UNTYPED_SFIELD(sfRemark, OBJECT, 97)
UNTYPED_SFIELD(sfHighReward, OBJECT, 98)
UNTYPED_SFIELD(sfLowReward, OBJECT, 99)
// array of objects (common)
// ARRAY/1 is reserved for end of array

1
include/xrpl/protocol/detail/transactions.macro
View File

@@ -550,6 +550,7 @@ TRANSACTION(ttIMPORT, 97, Import, ({
* from a specified hook */
TRANSACTION(ttCLAIM_REWARD, 98, ClaimReward, ({
{sfIssuer, soeOPTIONAL},
{sfClaimCurrency, soeOPTIONAL},
}))
/** This transaction invokes a hook, providing arbitrary data. Essentially as a 0 drop payment. **/

1
include/xrpl/protocol/jss.h
View File

@@ -76,6 +76,7 @@ JSS(Holder); // field.
JSS(HookApiVersion); // field
JSS(HookCanEmit); // field
JSS(HookHash); // field
JSS(HookName); // field
JSS(HookNamespace); // field
JSS(HookOn); // field
JSS(HookOnIncoming); // field