Guillaume BOURGEOIS
84be770928
Gmail for one mailbox over OAuth 2.0 (no service account / delegation): auth-link + exchange-code to obtain a refresh token, connectivity test, message search/get, send/reply with attachments, attachment retrieval, and get_incidents ingestion with an OCSF mapper. Refresh-token grant, stdlib-only (no extra Python dependencies). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
89 lines
3.5 KiB
Python
89 lines
3.5 KiB
Python
import base64, json, os, sys, urllib.parse, urllib.request, urllib.error
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TOKEN_URL = "https://oauth2.googleapis.com/token"
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API = "https://gmail.googleapis.com/gmail/v1/users/me"
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def _cfg():
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return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
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def _token():
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cfg = _cfg()
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refresh = str(cfg.get("refresh_token") or "")
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if not refresh:
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raise Exception("refresh_token is not set — run gmail-single-user-exchange-code and paste it into the config")
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data = urllib.parse.urlencode({
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"client_id": str(cfg.get("client_id") or ""),
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"client_secret": str(cfg.get("client_secret") or ""),
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"refresh_token": refresh,
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"grant_type": "refresh_token",
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}).encode("utf-8")
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req = urllib.request.Request(TOKEN_URL, data=data,
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headers={"Content-Type": "application/x-www-form-urlencoded", "Accept": "application/json"},
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method="POST")
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with urllib.request.urlopen(req, timeout=60) as r:
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tok = json.loads(r.read())
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if not tok.get("access_token"):
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raise Exception("Token refresh failed: " + json.dumps(tok))
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return tok["access_token"]
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def request(method, path, params=None, body=None, token=None):
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url = API + path
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q = {k: str(x) for k, x in (params or {}).items() if x not in (None, "")}
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if q:
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url += ("&" if "?" in url else "?") + urllib.parse.urlencode(q)
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data = json.dumps(body).encode("utf-8") if body is not None else None
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headers = {"Accept": "application/json", "Authorization": "Bearer " + (token or _token())}
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if data is not None:
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headers["Content-Type"] = "application/json"
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req = urllib.request.Request(url, data=data, headers=headers, method=method)
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with urllib.request.urlopen(req, timeout=90) as r:
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raw = r.read()
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return json.loads(raw) if raw else {}
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def collect_attachments(payload, out):
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for part in payload.get("parts", []) or []:
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collect_attachments(part, out)
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if payload.get("filename") and payload.get("body", {}).get("attachmentId"):
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out.append({
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"id": payload["body"]["attachmentId"],
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"name": payload.get("filename", ""),
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"mime_type": payload.get("mimeType", ""),
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})
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def main():
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inputs = json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
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mid = str(inputs.get("message_id") or "")
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if not mid:
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raise Exception("message_id is required")
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token = _token()
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full = request("GET", "/messages/" + urllib.parse.quote(mid), params={"format": "full"}, token=token)
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metas = []
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collect_attachments(full.get("payload", {}), metas)
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attachments = []
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for meta in metas:
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att = request("GET", "/messages/" + urllib.parse.quote(mid) + "/attachments/" + urllib.parse.quote(meta["id"]), token=token)
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raw = att.get("data", "")
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content = base64.urlsafe_b64decode((raw + "=" * (-len(raw) % 4)).encode("ascii")) if raw else b""
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attachments.append({
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"name": meta["name"],
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"mime_type": meta["mime_type"],
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"size": len(content),
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"content_base64": base64.b64encode(content).decode("ascii"),
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})
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print(json.dumps({"message_id": mid, "attachments": attachments}))
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try:
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main()
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except urllib.error.HTTPError as e:
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print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
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sys.exit(1)
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except Exception as e:
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print(json.dumps({"error": str(e)}))
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sys.exit(1)
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