feat(google-calendar): new Google Calendar integration

Calendar API v3 ACL management: create access control rules (grant a role to a user/group/domain/public) and list a calendar's ACL rules. Service-account auth with domain-wide delegation (JWT RS256), runs on a remote engine (requires PyJWT + cryptography). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-10 23:17:50 +02:00
parent 9f1df6ca7a
commit dbb740f476
4 changed files with 305 additions and 0 deletions
@@ -0,0 +1,83 @@
+import json, os, sys, time, urllib.parse, urllib.request, urllib.error
+
+import jwt
+
+TOKEN_URL = "https://oauth2.googleapis.com/token"
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _token(scopes, subject=None):
+    cfg = _cfg()
+    raw = cfg.get("service_account_json", "")
+    sa = json.loads(raw) if isinstance(raw, str) else raw
+    if not sa.get("client_email") or not sa.get("private_key"):
+        raise Exception("service_account_json must contain client_email and private_key")
+    now = int(time.time())
+    aud = sa.get("token_uri") or TOKEN_URL
+    payload = {
+        "iss": sa["client_email"],
+        "scope": " ".join(scopes),
+        "aud": aud,
+        "iat": now,
+        "exp": now + 3600,
+    }
+    sub = subject or cfg.get("user_id") or ""
+    if sub:
+        payload["sub"] = sub
+    assertion = jwt.encode(payload, sa["private_key"], algorithm="RS256")
+    data = urllib.parse.urlencode({
+        "grant_type": "urn:ietf:params:oauth:grant-type:jwt-bearer",
+        "assertion": assertion,
+    }).encode("utf-8")
+    req = urllib.request.Request(aud, data=data,
+                                 headers={"Content-Type": "application/x-www-form-urlencoded"}, method="POST")
+    with urllib.request.urlopen(req, timeout=60) as r:
+        tok = json.loads(r.read())
+    if not tok.get("access_token"):
+        raise Exception("Token request failed: " + json.dumps(tok))
+    return tok["access_token"]
+
+
+def request(method, url, scopes, params=None, body=None, subject=None):
+    q = {k: str(x) for k, x in (params or {}).items() if x not in (None, "")}
+    if q:
+        url += ("&" if "?" in url else "?") + urllib.parse.urlencode(q)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Accept": "application/json", "Authorization": "Bearer " + _token(scopes, subject)}
+    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=90) as r:
+        raw = r.read()
+        return json.loads(raw) if raw else {}
+
+
+SCOPES = ["https://www.googleapis.com/auth/calendar"]
+
+
+def main():
+    inputs = json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+    calendar_id = str(inputs.get("calendar_id") or "")
+    if not calendar_id:
+        raise Exception("calendar_id is required")
+    url = "https://www.googleapis.com/calendar/v3/calendars/" + urllib.parse.quote(calendar_id) + "/acl"
+    params = {
+        "maxResults": int(inputs.get("max_results") or 100),
+        "pageToken": inputs.get("page_token"),
+        "showDeleted": "true" if inputs.get("show_deleted") else None,
+        "syncToken": inputs.get("sync_token"),
+    }
+    print(json.dumps(request("GET", url, SCOPES, params=params, subject=inputs.get("user_id"))))
+
+
+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)