feat(threatconnect): new ThreatConnect threat-intel integration

ThreatConnect API v3, 9 commands: list/get/create/delete indicators, list/get/
create groups, add indicator tag. HMAC-SHA256 signed auth, stdlib-only.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

integrations/threatconnect/scripts/create_group.py

@@ -0,0 +1,57 @@
+import json, os, sys, time, hmac, hashlib, base64
+import urllib.parse, urllib.request, urllib.error
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def request(method, api_path, cfg, body=None):
+    # api_path MUST include the leading /api/v3/... and any ?query string.
+    base = str(cfg.get("base_url", "")).rstrip("/")
+    url = base + api_path
+    timestamp = str(int(time.time()))
+    to_sign = api_path + ":" + method.upper() + ":" + timestamp
+    secret = str(cfg.get("api_secret_key", "")).encode("utf-8")
+    signature = base64.b64encode(hmac.new(secret, to_sign.encode("utf-8"), hashlib.sha256).digest()).decode("utf-8")
+    authorization = "TC " + str(cfg.get("access_id", "")) + ":" + signature
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Authorization": authorization, "Timestamp": timestamp, "Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=method)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        return json.loads(raw) if raw else {}
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    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)
+
+
+def main(cfg, inputs):
+    type_ = inputs.get("type")
+    name = inputs.get("name")
+    if not type_:
+        raise Exception("type is required")
+    if not name:
+        raise Exception("name is required")
+    owner_name = inputs.get("owner_name")
+    body = {"type": type_, "name": name}
+    if owner_name:
+        body["ownerName"] = owner_name
+    return request("POST", "/api/v3/groups", cfg, body)
+
+
+_run(main)