From b7604091c60faf39f2ea16247ca470a68c2464d1 Mon Sep 17 00:00:00 2001
From: Caleb Tuttle <1calebtuttle@gmail.com>
Date: Sat, 6 Apr 2024 16:56:33 -0400
Subject: [PATCH] add epassport sybil resistance route

---
 src/constants/misc.js            |  5 +++
 src/routes/sybil-resistance.js   |  2 +
 src/services/sybil-resistance.js | 67 +++++++++++++++++++++++++++++++-
 3 files changed, 73 insertions(+), 1 deletion(-)

diff --git a/src/constants/misc.js b/src/constants/misc.js
index 13002b3..f1c2636 100644
--- a/src/constants/misc.js
+++ b/src/constants/misc.js
@@ -16,3 +16,8 @@ export const v3KYCSybilResistanceCircuitId =
   "0x729d660e1c02e4e419745e617d643f897a538673ccf1051e093bbfa58b0a120b";
 export const v3PhoneSybilResistanceCircuitId =
   "0xbce052cf723dca06a21bd3cf838bc518931730fb3db7859fc9cc86f0d5483495";
+export const v3EPassportSybilResistanceCircuitId =
+  "0xf2ce248b529343e105f7b3c16459da619281c5f81cf716d28f7df9f87667364d";
+
+export const ePassportIssuerMerkleRoot = 
+  "0x111abc2c2de1738067395fa944c07ce6e44c4a38accfed392797bb94cee2cdac";
diff --git a/src/routes/sybil-resistance.js b/src/routes/sybil-resistance.js
index fa4ddf8..88bf603 100644
--- a/src/routes/sybil-resistance.js
+++ b/src/routes/sybil-resistance.js
@@ -1,12 +1,14 @@
 import express from "express";
 import {
   sybilResistanceGovId,
+  sybilResistanceEPassport,
   sybilResistancePhone,
 } from "../services/sybil-resistance.js";
 
 const router = express.Router();
 
 router.get("/gov-id/:network", sybilResistanceGovId);
+router.get("/epassport/:network", sybilResistanceEPassport);
 router.get("/phone/:network", sybilResistancePhone);
 
 export default router;
diff --git a/src/services/sybil-resistance.js b/src/services/sybil-resistance.js
index 26970ec..573ed1d 100644
--- a/src/services/sybil-resistance.js
+++ b/src/services/sybil-resistance.js
@@ -13,6 +13,8 @@ import {
   phoneIssuerAddress,
   v3KYCSybilResistanceCircuitId,
   v3PhoneSybilResistanceCircuitId,
+  v3EPassportSybilResistanceCircuitId,
+  ePassportIssuerMerkleRoot,
 } from "../constants/misc.js";
 import AntiSybilStoreABI from "../constants/AntiSybilStoreABI.js";
 import HubV3ABI from "../constants/HubV3ABI.js";
@@ -93,6 +95,65 @@ async function sybilResistanceGovId(req, res) {
   }
 }
 
+async function sybilResistanceEPassport(req, res) {
+  try {
+    const address = req.query.user;
+    const actionId = req.query["action-id"];
+    if (!address) {
+      return res
+        .status(400)
+        .json({ error: "Request query params do not include user address" });
+    }
+    if (!actionId) {
+      return res
+        .status(400)
+        .json({ error: "Request query params do not include action-id" });
+    }
+    if (!assertValidAddress(address)) {
+      return res.status(400).json({ error: "Invalid user address" });
+    }
+    if (!parseInt(actionId)) {
+      return res.status(400).json({ error: "Invalid action-id" });
+    }
+
+    // Check blocklist first
+    const blockListResult = await blocklistGetAddress(address);
+    if (blockListResult.Item) {
+      return res.status(200).json({ result: false });
+    }
+
+    const network = req.params.network;
+
+    const provider = providers[network];
+
+    // Check v3 contract
+    try {
+      const hubV3Contract = new ethers.Contract(hubV3Address, HubV3ABI, provider);
+
+      const sbt = await hubV3Contract.getSBT(address, v3EPassportSybilResistanceCircuitId);
+
+      const publicValues = sbt[1];
+      const merkleRoot = publicValues[2].toHexString();
+
+      return res.status(200).json({
+        result: merkleRoot === ePassportIssuerMerkleRoot
+      });
+    } catch (err) {
+      if ((err.errorArgs?.[0] ?? "").includes("SBT is expired")) {
+        return res.status(200).json({ result: false });
+      }
+
+      throw err;
+    }
+  } catch (err) {
+    console.log(err);
+    logWithTimestamp(
+      "sybilResistanceEPassport: Encountered error while calling smart contract. Exiting"
+    );
+    return res.status(500).json({ error: "An unexpected error occured" });
+  }
+}
+
 async function sybilResistancePhone(req, res) {
   try {
     const address = req.query.user;
@@ -165,4 +226,8 @@ async function sybilResistancePhone(req, res) {
   }
 }
 
-export { sybilResistanceGovId, sybilResistancePhone };
+export {
+  sybilResistanceGovId,
+  sybilResistanceEPassport,
+  sybilResistancePhone
+};