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Code cleanup in SetTrust

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This commit is contained in:
Bronek Kozicki
2025-05-02 11:38:08 +01:00
parent 1925ceace6
commit a87f58eb22
1 changed files with 26 additions and 30 deletions
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56
src/xrpld/app/tx/detail/SetTrust.cpp
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@@ -179,14 +179,16 @@ SetTrust::preclaim(PreclaimContext const& ctx)
// This might be nullptr
auto const sleDst = ctx.view.read(keylet::account(uDstAccountID));
if ((ctx.view.rules().enabled(featureDisallowIncoming) ||
ammEnabled(ctx.view.rules()) ||
ctx.view.rules().enabled(featureSingleAssetVault)) &&
sleDst == nullptr)
return tecNO_DST;
// If the destination has opted to disallow incoming trustlines
// then honour that flag
if (ctx.view.rules().enabled(featureDisallowIncoming))
{
if (!sleDst)
return tecNO_DST;
if (sleDst->getFlags() & lsfDisallowIncomingTrustline)
{
// The original implementation of featureDisallowIncoming was
@@ -204,18 +206,22 @@ SetTrust::preclaim(PreclaimContext const& ctx)
}
}
// If destination is AMM and the trustline doesn't exist then only
// allow SetTrust if the asset is AMM LP token and AMM is not
// in empty state.
if (ammEnabled(ctx.view.rules()))
// In general, trust lines to pseudo accounts are not permitted, unless
// enabled in the code section below, for specific cases. This block is not
// amendment-gated because sleDst will not have a pseudo-account designator
// field populated, unless the appropriate amendment was already enabled.
if (sleDst && isPseudoAccount(sleDst))
{
if (!sleDst)
return tecNO_DST;
if (sleDst->isFieldPresent(sfAMMID) &&
!ctx.view.read(keylet::line(id, uDstAccountID, currency)))
// If destination is AMM and the trustline doesn't exist then only allow
// SetTrust if the asset is AMM LP token and AMM is not in empty state.
if (sleDst->isFieldPresent(sfAMMID))
{
if (auto const ammSle =
if (ctx.view.read(keylet::line(id, uDstAccountID, currency)))
{
// pass
}
else if (
auto const ammSle =
ctx.view.read({ltAMM, sleDst->getFieldH256(sfAMMID)}))
{
if (auto const lpTokens =
@@ -226,29 +232,19 @@ SetTrust::preclaim(PreclaimContext const& ctx)
return tecNO_PERMISSION;
}
else
return tecINTERNAL;
return tecINTERNAL; // LCOV_EXCL_LINE
}
}
// If destination is Vault, allow changes to the existing trustline.
if (ctx.view.rules().enabled(featureSingleAssetVault))
{
if (!sleDst)
return tecNO_DST;
bool const isVault = sleDst->isFieldPresent(sfVaultID);
if (isVault &&
!ctx.view.read(keylet::line(id, uDstAccountID, currency)))
return tecNO_PERMISSION;
else if (isVault)
else if (sleDst->isFieldPresent(sfVaultID))
{
if (ctx.view.read(keylet::vault(sleDst->getFieldH256(sfVaultID))))
if (ctx.view.read(keylet::line(id, uDstAccountID, currency)))
{
// Allow updating the state of existing trust line for the vault
// pass
}
else
return tecINTERNAL;
return tecNO_PERMISSION;
}
else
return tecPSEUDO_ACCOUNT;
}
// Checking all freeze/deep freeze flag invariants.