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add xpop_slot hookapi (compiling, untested)

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This commit is contained in:
Richard Holland
2023-07-11 09:56:36 +00:00
parent 234d811ce3
commit f06124e8c7
3 changed files with 67 additions and 2 deletions
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4
src/ripple/app/hook/Enum.h
View File

@@ -324,13 +324,13 @@ namespace hook_api
{"otxn_type",{0x7EU}},
{"otxn_slot",{0x7EU,0x7FU}},
{"otxn_param",{0x7EU,0x7FU,0x7FU,0x7FU,0x7FU}},
{"meta_slot",{0x7EU,0x7FU}}
{"meta_slot",{0x7EU,0x7FU}}
};
// featureHooks1
static const std::map<std::string, std::vector<uint8_t>> import_whitelist_1
{
{"xpop_slot",{0x7EU,0x7FU,0x7FU}}
};
};
#endif

2
src/ripple/app/hook/applyHook.h
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@@ -212,6 +212,7 @@ namespace hook_api
uint32_t read_ptr, uint32_t read_len);
DECLARE_HOOK_FUNCTION(int64_t, meta_slot, uint32_t slot_no );
DECLARE_HOOK_FUNCTION(int64_t, xpop_slot, uint32_t slot_no_tx, uint32_t slot_no_meta );
/*
DECLARE_HOOK_FUNCTION(int64_t, str_find, uint32_t hread_ptr, uint32_t hread_len,
@@ -661,6 +662,7 @@ namespace hook
ADD_HOOK_FUNCTION(trace_float, ctx);
ADD_HOOK_FUNCTION(meta_slot, ctx);
ADD_HOOK_FUNCTION(xpop_slot, ctx);
/*
ADD_HOOK_FUNCTION(str_find, ctx);

63
src/ripple/app/hook/impl/applyHook.cpp
View File

@@ -5508,6 +5508,69 @@ DEFINE_HOOK_FUNCTION(
HOOK_TEARDOWN();
}
DEFINE_HOOK_FUNCTION(
int64_t,
xpop_slot,
uint32_t slot_into_tx, uint32_t slot_into_meta )
{
HOOK_SETUP();
if (applyCtx.tx.getFieldU16(sfTransactionType) != ttIMPORT)
return PREREQUISITE_NOT_MET;
if (slot_into_tx > hook_api::max_slots || slot_into_meta > hook_api::max_slots)
return INVALID_ARGUMENT;
size_t free_count = hookCtx.slot_free.size();
size_t needed_count =
slot_into_tx == 0 && slot_into_meta == 0 ? 2 : slot_into_tx != 0 && slot_into_meta != 0 ? 0 : 1;
if (free_count < needed_count)
return NO_FREE_SLOTS;
if (slot_into_tx == 0)
{
if (no_free_slots(hookCtx))
return NO_FREE_SLOTS;
if (auto found = get_free_slot(hookCtx); found)
slot_into_tx = *found;
else
return NO_FREE_SLOTS;
}
if (slot_into_meta == 0)
{
if (no_free_slots(hookCtx))
return NO_FREE_SLOTS;
if (auto found = get_free_slot(hookCtx); found)
slot_into_meta = *found;
else
return NO_FREE_SLOTS;
}
auto [tx, meta] = Import::getInnerTxn(applyCtx.tx, j);
hookCtx.slot.emplace( std::pair<uint32_t, hook::SlotEntry> { slot_into_tx, hook::SlotEntry {
.storage = std::move(tx),
.entry = 0
}});
hookCtx.slot[slot_into_tx].entry = &(*hookCtx.slot[slot_into_tx].storage);
hookCtx.slot.emplace( std::pair<uint32_t, hook::SlotEntry> { slot_into_meta, hook::SlotEntry {
.storage = std::move(meta),
.entry = 0
}});
hookCtx.slot[slot_into_meta].entry = &(*hookCtx.slot[slot_into_meta].storage);
return (slot_into_tx << 16U) + slot_into_meta;
HOOK_TEARDOWN();
}
/*
DEFINE_HOOK_FUNCTION(