feat(shodan): add Shodan threat-intel integration

Host enrichment, search/count, DNS resolve/reverse, domain info, api-info
and scan status as form-based GET commands; active scan is code-first
(form-encoded POST) and marked destructive. API key sent as the `key`
query parameter.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

integrations/shodan/scripts/scan.py

@@ -0,0 +1,39 @@
+import json, os, sys, urllib.request, urllib.parse, urllib.error
+
+
+def main():
+    secrets = json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+    inputs = json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+    base = secrets.get("base_url", "https://api.shodan.io").rstrip("/")
+    key = secrets.get("api_key", "")
+
+    ips = str(inputs.get("ips", "")).strip()
+    if not ips:
+        print(json.dumps({"error": "ips is required"}))
+        sys.exit(1)
+
+    # Shodan's POST /shodan/scan expects an application/x-www-form-urlencoded body.
+    form = {"ips": ips}
+    if inputs.get("service"):
+        form["service"] = str(inputs["service"])
+
+    url = base + "/shodan/scan?" + urllib.parse.urlencode({"key": key})
+    data = urllib.parse.urlencode(form).encode("utf-8")
+    headers = {
+        "Content-Type": "application/x-www-form-urlencoded",
+        "Accept": "application/json",
+    }
+    req = urllib.request.Request(url, data=data, headers=headers, method="POST")
+    with urllib.request.urlopen(req, timeout=30) as resp:
+        raw = resp.read()
+        print(json.dumps(json.loads(raw) if raw else {}))
+
+
+try:
+    main()
+except urllib.error.HTTPError as e:
+    print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+    sys.exit(1)
+except Exception as e:
+    print(json.dumps({"error": str(e)}))
+    sys.exit(1)