check for scams on erc721

bloomwalletio · Apr 30, 2024 · 198e2a5 · 198e2a5
1 parent 66c07d0
commit 198e2a5
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diff --git a/packages/shared/src/lib/core/nfts/utils/buildNftFromPersistedErc721Nft.ts b/packages/shared/src/lib/core/nfts/utils/buildNftFromPersistedErc721Nft.ts
@@ -1,12 +1,15 @@
 import { DEFAULT_NFT_NAME, MimeType } from '@core/nfts'
 import { IErc721Nft, IPersistedErc721Nft } from '../interfaces'
+import { isScamErc721Nft } from './isScamErc721Nft'
 
 export function buildNftFromPersistedErc721Nft(nft: IPersistedErc721Nft, accountAddress: string): IErc721Nft {
     const isSpendable = nft.ownerAddress === accountAddress
+    const isScam = nft?.isScam ?? (nft.metadata ? isScamErc721Nft(nft.metadata) : false)
 
     return {
         ...nft,
         isSpendable,
+        isScam,
         name: nft.metadata?.name ?? nft.contractMetadata.name ?? DEFAULT_NFT_NAME,
         description: nft.metadata?.description,
         type: MimeType.ImagePng,

diff --git a/packages/shared/src/lib/core/nfts/utils/index.ts b/packages/shared/src/lib/core/nfts/utils/index.ts
@@ -12,6 +12,7 @@ export * from './getSpendableStatusFromUnspentNftOutput'
 export * from './isIrc27Nft'
 export * from './isNftLocked'
 export * from './isNftOwnedByAnyAccount'
+export * from './isScamErc721Nft'
 export * from './isScamIrc27Nft'
 export * from './isValidNftUri'
 export * from './isVisibleCollection'

diff --git a/packages/shared/src/lib/core/nfts/utils/isScamErc721Nft.ts b/packages/shared/src/lib/core/nfts/utils/isScamErc721Nft.ts
@@ -0,0 +1,28 @@
+import { appParameters } from '@core/app/stores'
+import { IErc721TokenMetadata } from '../interfaces'
+import { get } from 'svelte/store'
+
+export function isScamErc721Nft(metadata: IErc721TokenMetadata): boolean {
+    const { urls, keywords } = get(appParameters).denylists
+
+    if (
+        urls.some(
+            (url) =>
+                metadata?.name?.toLocaleLowerCase()?.includes(url) ||
+                metadata?.description?.toLocaleLowerCase()?.includes(url) ||
+                metadata?.image?.toLocaleLowerCase()?.includes(url)
+        )
+    ) {
+        return true
+    } else if (
+        keywords.some(
+            (phrase) =>
+                metadata?.name?.toLocaleLowerCase()?.includes(phrase) ||
+                metadata?.description?.toLocaleLowerCase()?.includes(phrase)
+        )
+    ) {
+        return true
+    } else {
+        return false
+    }
+}