[object Object]

← back to Shopify Oauth Catcher

initial scaffold

809a8789c93c0169b3c5926cabdc14cccfe7377d · 2026-05-13 12:13:51 -0700 · Steve Abrams

Files touched

Diff

commit 809a8789c93c0169b3c5926cabdc14cccfe7377d
Author: Steve Abrams <steve@designerwallcoverings.com>
Date:   Wed May 13 12:13:51 2026 -0700

    initial scaffold
---
 .gitignore           |   9 +
 ecosystem.config.cjs |  19 ++
 package-lock.json    | 842 +++++++++++++++++++++++++++++++++++++++++++++++++++
 package.json         |   6 +
 server.js            | 126 ++++++++
 5 files changed, 1002 insertions(+)

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4a0b3ea
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,9 @@
+node_modules/
+.env
+.env.*
+tmp/
+*.log
+.DS_Store
+dist/
+build/
+.next/
diff --git a/ecosystem.config.cjs b/ecosystem.config.cjs
new file mode 100644
index 0000000..3641fc4
--- /dev/null
+++ b/ecosystem.config.cjs
@@ -0,0 +1,19 @@
+module.exports = {
+  apps: [{
+    name: "shopify-oauth-catcher",
+    script: "server.js",
+    cwd: __dirname,
+    env: {
+      HOST: "0.0.0.0",
+      BIND: "0.0.0.0",
+      FLASK_RUN_HOST: "0.0.0.0",
+      UVICORN_HOST: "0.0.0.0",
+      GUNICORN_BIND: "0.0.0.0:8000",
+      HOSTNAME: "0.0.0.0",
+      VITE_HOST: "0.0.0.0",
+      NEXT_TELEMETRY_DISABLED: "1",
+    },
+    autorestart: true,
+    max_memory_restart: "300M",
+  }],
+};
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..9f5f9b7
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,842 @@
+{
+  "name": "shopify-oauth-catcher",
+  "version": "0.1.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "shopify-oauth-catcher",
+      "version": "0.1.0",
+      "dependencies": {
+        "express": "^4.18.2"
+      }
+    },
+    "node_modules/accepts": {
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+      "license": "MIT",
+      "dependencies": {
+        "mime-types": "~2.1.34",
+        "negotiator": "0.6.3"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/array-flatten": {
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+      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
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+      "license": "MIT"
+    },
+    "node_modules/body-parser": {
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+      "license": "MIT",
+      "dependencies": {
+        "bytes": "~3.1.2",
+        "content-type": "~1.0.5",
+        "debug": "2.6.9",
+        "depd": "2.0.0",
+        "destroy": "~1.2.0",
+        "http-errors": "~2.0.1",
+        "iconv-lite": "~0.4.24",
+        "on-finished": "~2.4.1",
+        "qs": "~6.15.1",
+        "raw-body": "~2.5.3",
+        "type-is": "~1.6.18",
+        "unpipe": "~1.0.0"
+      },
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+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "side-channel": "^1.1.0"
+      },
+      "engines": {
+        "node": ">=0.6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
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diff --git a/package.json b/package.json
new file mode 100644
index 0000000..db1f8a5
--- /dev/null
+++ b/package.json
@@ -0,0 +1,6 @@
+{
+  "name": "shopify-oauth-catcher",
+  "version": "0.1.0",
+  "main": "server.js",
+  "dependencies": { "express": "^4.18.2" }
+}
diff --git a/server.js b/server.js
new file mode 100644
index 0000000..bd85e3b
--- /dev/null
+++ b/server.js
@@ -0,0 +1,126 @@
+// Shopify OAuth catcher — exchanges install codes for shpat_ Admin API tokens.
+//
+// Flow:
+//   1. Steve sets the partner-app redirect URL to https://builds.agentabrams.com/shopify-oauth/callback
+//   2. Steve clicks GET /install?shop=designer-laboratory-sandbox.myshopify.com
+//      → we redirect to Shopify's authorize URL with our scopes
+//   3. Steve approves on shopify.com
+//   4. Shopify redirects browser to /callback?code=...&shop=...&hmac=...
+//   5. We exchange code for access_token via POST /admin/oauth/access_token
+//   6. Save token via secrets-manager CLI as SHOPIFY_<SHOP>_TOKEN
+
+const express = require('express');
+const crypto = require('crypto');
+const { execFileSync } = require('child_process');
+const fs = require('fs');
+const PORT = process.env.PORT || 9914;
+const SCOPES = process.env.SHOPIFY_SCOPES ||
+  'read_content,write_content,read_products,write_products,read_themes,write_themes,read_files,write_files,read_metaobjects,write_metaobjects';
+
+// Load creds from secrets-manager
+function readEnv(key) {
+  try {
+    const m = fs.readFileSync(process.env.HOME + '/Projects/secrets-manager/.env', 'utf8').match(new RegExp('^' + key + '=(.*)$', 'm'));
+    return m ? m[1].replace(/^["']|["']$/g, '').trim() : null;
+  } catch { return null; }
+}
+const CLIENT_ID     = readEnv('SHOPIFY_DW_APP_CLIENT_ID');
+const CLIENT_SECRET = readEnv('SHOPIFY_DW_APP_CLIENT_SECRET');
+const REDIRECT_URI  = process.env.REDIRECT_URI || 'https://builds.agentabrams.com/shopify-oauth/callback';
+
+if (!CLIENT_ID || !CLIENT_SECRET) {
+  console.error('[fatal] missing SHOPIFY_DW_APP_CLIENT_ID or _SECRET in ~/Projects/secrets-manager/.env');
+  process.exit(2);
+}
+
+const app = express();
+const states = new Map(); // state → {shop, ts}
+
+app.get('/install', (req, res) => {
+  const shop = req.query.shop || 'designer-laboratory-sandbox.myshopify.com';
+  if (!/^[\w-]+\.myshopify\.com$/.test(shop)) return res.status(400).send('invalid shop');
+  const state = crypto.randomBytes(16).toString('hex');
+  states.set(state, { shop, ts: Date.now() });
+  // Cleanup old states (older than 10 min)
+  for (const [k, v] of states.entries()) if (Date.now() - v.ts > 600_000) states.delete(k);
+  const url = `https://${shop}/admin/oauth/authorize` +
+    `?client_id=${CLIENT_ID}` +
+    `&scope=${encodeURIComponent(SCOPES)}` +
+    `&redirect_uri=${encodeURIComponent(REDIRECT_URI)}` +
+    `&state=${state}`;
+  console.log(`[install] redirecting ${shop} → Shopify OAuth (state=${state.slice(0,8)})`);
+  res.redirect(url);
+});
+
+app.get('/callback', async (req, res) => {
+  const { code, shop, state, hmac } = req.query;
+  if (!code || !shop || !state) return res.status(400).send('missing params');
+  if (!states.has(state)) return res.status(400).send('unknown state — install link expired or replayed');
+  const stateRec = states.get(state);
+  states.delete(state);
+  if (stateRec.shop !== shop) return res.status(400).send('shop mismatch');
+
+  // Verify HMAC (drop `hmac` and `signature` from query, sort, sign with client_secret)
+  const params = { ...req.query };
+  delete params.hmac;
+  delete params.signature;
+  const message = Object.keys(params).sort().map(k => `${k}=${params[k]}`).join('&');
+  const expected = crypto.createHmac('sha256', CLIENT_SECRET).update(message).digest('hex');
+  if (expected !== hmac) {
+    console.warn(`[callback] HMAC mismatch — got=${hmac} expected=${expected}`);
+    return res.status(400).send('HMAC validation failed');
+  }
+
+  // Exchange code → access token
+  try {
+    const resp = await fetch(`https://${shop}/admin/oauth/access_token`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ client_id: CLIENT_ID, client_secret: CLIENT_SECRET, code }),
+    });
+    const j = await resp.json();
+    if (!resp.ok || !j.access_token) {
+      console.error('[callback] token exchange failed:', j);
+      return res.status(500).send('token exchange failed: ' + JSON.stringify(j));
+    }
+    const token = j.access_token;
+    const scope = j.scope || '';
+    const last4 = token.slice(-4);
+    console.log(`[callback] got access_token (${last4}) scopes=[${scope}]`);
+
+    // Save via secrets-manager — pick a name based on shop handle
+    const shopHandle = shop.replace('.myshopify.com', '').replace(/-/g, '_').toUpperCase();
+    const keyName = `SHOPIFY_${shopHandle}_ADMIN_TOKEN`;
+    try {
+      const out = execFileSync('node',
+        [process.env.HOME + '/Projects/secrets-manager/cli.js', 'add', keyName, token],
+        { encoding: 'utf8' });
+      console.log('[saved]', out.split('\n').slice(0, 5).join('\n'));
+    } catch (e) {
+      console.error('[save] secrets-manager add failed — writing to fallback file');
+      fs.writeFileSync(`/tmp/${keyName}.txt`, token, { mode: 0o600 });
+    }
+
+    res.send(`<!doctype html><meta charset=utf-8>
+<title>OAuth complete</title>
+<style>body{font-family:-apple-system,sans-serif;max-width:600px;margin:60px auto;padding:0 20px;background:#0a0905;color:#fff;line-height:1.5}
+h1{color:#C9A14B}code{background:#1a1612;padding:2px 6px;border-radius:3px;color:#C9A14B}</style>
+<h1>✓ Token captured</h1>
+<p>Saved as <code>${keyName}</code> in <code>/secrets</code>. Last4: <code>${last4}</code>.</p>
+<p>Granted scopes:<br><code>${scope}</code></p>
+<p>You can close this tab.</p>`);
+  } catch (e) {
+    console.error('[callback] exchange error:', e);
+    res.status(500).send('error: ' + e.message);
+  }
+});
+
+app.get('/', (_req, res) => res.send('<a href="/install">Install on designer-laboratory-sandbox</a>'));
+app.get('/health', (_req, res) => res.json({ ok: true, port: PORT, redirect: REDIRECT_URI }));
+
+app.listen(PORT, '0.0.0.0', () => {
+  console.log(`[shopify-oauth-catcher] listening on http://127.0.0.1:${PORT}`);
+  console.log(`  REDIRECT_URI = ${REDIRECT_URI}`);
+  console.log(`  CLIENT_ID    = ${CLIENT_ID.slice(0, 8)}…${CLIENT_ID.slice(-4)}`);
+  console.log(`  scopes       = ${SCOPES}`);
+});

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