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https://github.com/luxfi/graph.git
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zeekay
705e38c45e
Red re-verify found the V4 AMM-spoof gate left a parallel bypass.
MEDIUM — V2/V3 AMM handlers were UNGATED: handlePairCreated, handlePoolCreated,
handleSwapV2, handleSwapV3 accepted events from ANY emitter — a parallel path to
seed phantom pairs/pools/swaps and inflate the SAME public Factory/TVL/volume
aggregates the now-gated V4 handlers (0x9999) block. Mirror the V4 gate:
- PairCreated/PoolCreated now require the canonical FactoryV2/FactoryV3 emitter
(the AMM trust root), exactly as V4 requires 0x9999.
- V2/V3 Swaps are emitted by the pair/pool, not the factory, so the gate is
"is the emitter a pool the canonical factory created?" (isKnownPool). The
factory authorizes a pool; only that pool's Swaps are honored. A rogue
factory's PairCreated is rejected, so its pools are never registered, so its
Swaps are rejected — the whole parallel path is closed.
- Pair/pool keys lower-cased at seed so the Swap-side lookup is RPC-casing safe.
- Factory addresses configurable (Config.FactoryV2/V3 + FACTORY_V2/V3 env),
default to canonical Lux mainnet (LuxMainnet.Factory{V2,V3}); main wires env.
INFO — the per-namespace resolver limit lacked the `if limit < 1 { limit = 100 }`
floor that resolvers/dex has, so a negative/zero `first` flowed to ListByType
(`first:-1` = "no limit" in SQLite — an unbounded scan). Brought every pl()/
parseLimit() copy to the dex-canonical body (floor <1->100 + cap 1000); fhe and
platform also gained the previously-missing 1000 cap. All namespaces now identical.
Tests (go test ./...): indexer + resolvers/{dex,exchange,fhe,platform} green.
- TestHandleV2_RejectsNonFactory, TestHandleV3_RejectsNonFactory: rogue
PairCreated/PoolCreated/Swap seeds nothing and does not inflate the factory
aggregate; the canonical-source event IS honored end-to-end.
- TestPL_ClampsFirst / TestParseLimit_ClampsFirst (exchange/fhe/platform):
negative/zero floored to 100, capped at 1000.
97 lines
3.5 KiB
Go
97 lines
3.5 KiB
Go
// Package exchange provides resolvers for the X-Chain (ExchangeVM).
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//
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// Indexes: UTXO assets, transfers, NFTs, asset creation, cross-chain imports/exports.
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//
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// Entities: Asset, UTXO, Transfer, AssetCreation, ImportTx, ExportTx
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package exchange
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import (
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"context"
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"fmt"
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"github.com/luxfi/graph/storage"
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)
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type ResolverFunc = func(context.Context, *storage.Store, map[string]interface{}) (interface{}, error)
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func Register(resolvers map[string]ResolverFunc) {
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resolvers["asset"] = resolveAsset
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resolvers["assets"] = resolveAssets
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resolvers["utxo"] = resolveUTXO
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resolvers["utxos"] = resolveUTXOs
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resolvers["xTransfer"] = resolveXTransfer
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resolvers["xTransfers"] = resolveXTransfers
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resolvers["assetCreation"] = resolveAssetCreation
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resolvers["assetCreations"] = resolveAssetCreations
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resolvers["importTx"] = resolveImportTx
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resolvers["importTxs"] = resolveImportTxs
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resolvers["exportTx"] = resolveExportTx
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resolvers["exportTxs"] = resolveExportTxs
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}
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func resolveAsset(_ context.Context, s *storage.Store, args map[string]interface{}) (interface{}, error) {
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if id, ok := args["id"]; ok {
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return s.GetByType("Asset", fmt.Sprint(id))
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}
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return nil, fmt.Errorf("asset requires id")
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}
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func resolveAssets(_ context.Context, s *storage.Store, args map[string]interface{}) (interface{}, error) {
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return s.ListByType("Asset", pl(args))
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}
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func resolveUTXO(_ context.Context, s *storage.Store, args map[string]interface{}) (interface{}, error) {
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if id, ok := args["id"]; ok {
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return s.GetByType("UTXO", fmt.Sprint(id))
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}
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return nil, fmt.Errorf("utxo requires id")
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}
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func resolveUTXOs(_ context.Context, s *storage.Store, args map[string]interface{}) (interface{}, error) {
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return s.ListByType("UTXO", pl(args))
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}
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func resolveXTransfer(_ context.Context, s *storage.Store, args map[string]interface{}) (interface{}, error) {
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if id, ok := args["id"]; ok {
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return s.GetByType("XTransfer", fmt.Sprint(id))
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}
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return nil, fmt.Errorf("xTransfer requires id")
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}
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func resolveXTransfers(_ context.Context, s *storage.Store, args map[string]interface{}) (interface{}, error) {
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return s.ListByType("XTransfer", pl(args))
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}
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func resolveAssetCreation(_ context.Context, s *storage.Store, args map[string]interface{}) (interface{}, error) {
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if id, ok := args["id"]; ok {
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return s.GetByType("AssetCreation", fmt.Sprint(id))
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}
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return nil, fmt.Errorf("assetCreation requires id")
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}
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func resolveAssetCreations(_ context.Context, s *storage.Store, args map[string]interface{}) (interface{}, error) {
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return s.ListByType("AssetCreation", pl(args))
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}
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func resolveImportTx(_ context.Context, s *storage.Store, args map[string]interface{}) (interface{}, error) {
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if id, ok := args["id"]; ok {
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return s.GetByType("ImportTx", fmt.Sprint(id))
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}
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return nil, fmt.Errorf("importTx requires id")
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}
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func resolveImportTxs(_ context.Context, s *storage.Store, args map[string]interface{}) (interface{}, error) {
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return s.ListByType("ImportTx", pl(args))
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}
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func resolveExportTx(_ context.Context, s *storage.Store, args map[string]interface{}) (interface{}, error) {
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if id, ok := args["id"]; ok {
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return s.GetByType("ExportTx", fmt.Sprint(id))
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}
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return nil, fmt.Errorf("exportTx requires id")
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}
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func resolveExportTxs(_ context.Context, s *storage.Store, args map[string]interface{}) (interface{}, error) {
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return s.ListByType("ExportTx", pl(args))
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}
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func pl(args map[string]interface{}) int {
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limit := 100
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if l, ok := args["first"]; ok {
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fmt.Sscanf(fmt.Sprint(l), "%d", &limit)
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}
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if limit < 1 {
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limit = 100
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}
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return min(limit, 1000)
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}
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