feat(mimecast): new Mimecast anti-phishing integration

Email Security API, 11 commands: held-message list/release/reject, message
search + info, managed URL create/list (block), block sender, create
remediation, URL decode. HMAC-SHA1 signed auth, stdlib-only.

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

integrations/mimecast/scripts/block_sender.py

@@ -0,0 +1,75 @@
+import json, os, sys, hmac, hashlib, base64, uuid, datetime
+import 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 call(uri, cfg, data_payload=None):
+    base_url = str(cfg.get("base_url", "")).rstrip("/")
+    app_id = str(cfg.get("app_id", ""))
+    app_key = str(cfg.get("app_key", ""))
+    access_key = str(cfg.get("access_key", ""))
+    secret_key = str(cfg.get("secret_key", ""))
+
+    request_id = str(uuid.uuid4())
+    hdr_date = datetime.datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S UTC")
+    to_sign = hdr_date + ":" + request_id + ":" + uri + ":" + app_key
+    sig = base64.b64encode(
+        hmac.new(base64.b64decode(secret_key), to_sign.encode("utf-8"), hashlib.sha1).digest()
+    ).decode("utf-8")
+
+    headers = {
+        "Authorization": "MC " + access_key + ":" + sig,
+        "x-mc-app-id": app_id,
+        "x-mc-date": hdr_date,
+        "x-mc-req-id": request_id,
+        "Content-Type": "application/json",
+        "Accept": "application/json",
+    }
+    body = {"data": [data_payload] if data_payload is not None else []}
+    req = urllib.request.Request(base_url + uri, data=json.dumps(body).encode("utf-8"), headers=headers, method="POST")
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        resp = json.loads(raw) if raw else {}
+    fails = resp.get("fail") if isinstance(resp, dict) else None
+    if fails:
+        # Mimecast returns errors in the 'fail' array even on HTTP 200
+        raise Exception("Mimecast error: " + json.dumps(fails))
+    return resp
+
+
+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):
+    sender = inputs.get("sender")
+    if not sender:
+        raise Exception("sender is required")
+    recipient = inputs.get("recipient")
+    if not recipient:
+        raise Exception("recipient is required")
+    action = inputs.get("action")
+
+    payload = {
+        "sender": sender,
+        "to": recipient,
+        "action": action or "block",
+    }
+    return call("/api/managedsender/permit-or-block-sender", cfg, payload)
+
+
+_run(main)

integrations/mimecast/scripts/create_managed_url.py

@@ -0,0 +1,77 @@
+import json, os, sys, hmac, hashlib, base64, uuid, datetime
+import 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 call(uri, cfg, data_payload=None):
+    base_url = str(cfg.get("base_url", "")).rstrip("/")
+    app_id = str(cfg.get("app_id", ""))
+    app_key = str(cfg.get("app_key", ""))
+    access_key = str(cfg.get("access_key", ""))
+    secret_key = str(cfg.get("secret_key", ""))
+
+    request_id = str(uuid.uuid4())
+    hdr_date = datetime.datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S UTC")
+    to_sign = hdr_date + ":" + request_id + ":" + uri + ":" + app_key
+    sig = base64.b64encode(
+        hmac.new(base64.b64decode(secret_key), to_sign.encode("utf-8"), hashlib.sha1).digest()
+    ).decode("utf-8")
+
+    headers = {
+        "Authorization": "MC " + access_key + ":" + sig,
+        "x-mc-app-id": app_id,
+        "x-mc-date": hdr_date,
+        "x-mc-req-id": request_id,
+        "Content-Type": "application/json",
+        "Accept": "application/json",
+    }
+    body = {"data": [data_payload] if data_payload is not None else []}
+    req = urllib.request.Request(base_url + uri, data=json.dumps(body).encode("utf-8"), headers=headers, method="POST")
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        resp = json.loads(raw) if raw else {}
+    fails = resp.get("fail") if isinstance(resp, dict) else None
+    if fails:
+        # Mimecast returns errors in the 'fail' array even on HTTP 200
+        raise Exception("Mimecast error: " + json.dumps(fails))
+    return resp
+
+
+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):
+    url = inputs.get("url")
+    if not url:
+        raise Exception("url is required")
+    action = inputs.get("action")
+    match_type = inputs.get("match_type")
+
+    payload = {
+        "url": url,
+        "action": action or "block",
+        "matchType": match_type or "explicit",
+    }
+    comment = inputs.get("comment")
+    if comment:
+        payload["comment"] = comment
+
+    return call("/api/ttp/url/create-managed-url", cfg, payload)
+
+
+_run(main)

integrations/mimecast/scripts/create_remediation.py

@@ -0,0 +1,76 @@
+import json, os, sys, hmac, hashlib, base64, uuid, datetime
+import 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 call(uri, cfg, data_payload=None):
+    base_url = str(cfg.get("base_url", "")).rstrip("/")
+    app_id = str(cfg.get("app_id", ""))
+    app_key = str(cfg.get("app_key", ""))
+    access_key = str(cfg.get("access_key", ""))
+    secret_key = str(cfg.get("secret_key", ""))
+
+    request_id = str(uuid.uuid4())
+    hdr_date = datetime.datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S UTC")
+    to_sign = hdr_date + ":" + request_id + ":" + uri + ":" + app_key
+    sig = base64.b64encode(
+        hmac.new(base64.b64decode(secret_key), to_sign.encode("utf-8"), hashlib.sha1).digest()
+    ).decode("utf-8")
+
+    headers = {
+        "Authorization": "MC " + access_key + ":" + sig,
+        "x-mc-app-id": app_id,
+        "x-mc-date": hdr_date,
+        "x-mc-req-id": request_id,
+        "Content-Type": "application/json",
+        "Accept": "application/json",
+    }
+    body = {"data": [data_payload] if data_payload is not None else []}
+    req = urllib.request.Request(base_url + uri, data=json.dumps(body).encode("utf-8"), headers=headers, method="POST")
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        resp = json.loads(raw) if raw else {}
+    fails = resp.get("fail") if isinstance(resp, dict) else None
+    if fails:
+        # Mimecast returns errors in the 'fail' array even on HTTP 200
+        raise Exception("Mimecast error: " + json.dumps(fails))
+    return resp
+
+
+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):
+    message_hash = inputs.get("message_hash")
+    message_id = inputs.get("message_id")
+    if not message_hash and not message_id:
+        raise Exception("message_hash or message_id is required")
+
+    payload = {}
+    if message_hash:
+        payload["hash"] = message_hash
+    if message_id:
+        payload["messageId"] = message_id
+    reason = inputs.get("reason")
+    if reason:
+        payload["reason"] = reason
+
+    return call("/api/ttp/remediation/create", cfg, payload)
+
+
+_run(main)

integrations/mimecast/scripts/decode_url.py

@@ -0,0 +1,65 @@
+import json, os, sys, hmac, hashlib, base64, uuid, datetime
+import 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 call(uri, cfg, data_payload=None):
+    base_url = str(cfg.get("base_url", "")).rstrip("/")
+    app_id = str(cfg.get("app_id", ""))
+    app_key = str(cfg.get("app_key", ""))
+    access_key = str(cfg.get("access_key", ""))
+    secret_key = str(cfg.get("secret_key", ""))
+
+    request_id = str(uuid.uuid4())
+    hdr_date = datetime.datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S UTC")
+    to_sign = hdr_date + ":" + request_id + ":" + uri + ":" + app_key
+    sig = base64.b64encode(
+        hmac.new(base64.b64decode(secret_key), to_sign.encode("utf-8"), hashlib.sha1).digest()
+    ).decode("utf-8")
+
+    headers = {
+        "Authorization": "MC " + access_key + ":" + sig,
+        "x-mc-app-id": app_id,
+        "x-mc-date": hdr_date,
+        "x-mc-req-id": request_id,
+        "Content-Type": "application/json",
+        "Accept": "application/json",
+    }
+    body = {"data": [data_payload] if data_payload is not None else []}
+    req = urllib.request.Request(base_url + uri, data=json.dumps(body).encode("utf-8"), headers=headers, method="POST")
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        resp = json.loads(raw) if raw else {}
+    fails = resp.get("fail") if isinstance(resp, dict) else None
+    if fails:
+        # Mimecast returns errors in the 'fail' array even on HTTP 200
+        raise Exception("Mimecast error: " + json.dumps(fails))
+    return resp
+
+
+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):
+    url = inputs.get("url")
+    if not url:
+        raise Exception("url is required")
+    return call("/api/ttp/url/decode-url", cfg, {"url": url})
+
+
+_run(main)

integrations/mimecast/scripts/get_message_info.py

@@ -0,0 +1,65 @@
+import json, os, sys, hmac, hashlib, base64, uuid, datetime
+import 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 call(uri, cfg, data_payload=None):
+    base_url = str(cfg.get("base_url", "")).rstrip("/")
+    app_id = str(cfg.get("app_id", ""))
+    app_key = str(cfg.get("app_key", ""))
+    access_key = str(cfg.get("access_key", ""))
+    secret_key = str(cfg.get("secret_key", ""))
+
+    request_id = str(uuid.uuid4())
+    hdr_date = datetime.datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S UTC")
+    to_sign = hdr_date + ":" + request_id + ":" + uri + ":" + app_key
+    sig = base64.b64encode(
+        hmac.new(base64.b64decode(secret_key), to_sign.encode("utf-8"), hashlib.sha1).digest()
+    ).decode("utf-8")
+
+    headers = {
+        "Authorization": "MC " + access_key + ":" + sig,
+        "x-mc-app-id": app_id,
+        "x-mc-date": hdr_date,
+        "x-mc-req-id": request_id,
+        "Content-Type": "application/json",
+        "Accept": "application/json",
+    }
+    body = {"data": [data_payload] if data_payload is not None else []}
+    req = urllib.request.Request(base_url + uri, data=json.dumps(body).encode("utf-8"), headers=headers, method="POST")
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        resp = json.loads(raw) if raw else {}
+    fails = resp.get("fail") if isinstance(resp, dict) else None
+    if fails:
+        # Mimecast returns errors in the 'fail' array even on HTTP 200
+        raise Exception("Mimecast error: " + json.dumps(fails))
+    return resp
+
+
+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):
+    message_id = inputs.get("message_id")
+    if not message_id:
+        raise Exception("message_id is required")
+    return call("/api/message-finder/get-message-info", cfg, {"id": message_id})
+
+
+_run(main)

integrations/mimecast/scripts/list_held_messages.py

@@ -0,0 +1,72 @@
+import json, os, sys, hmac, hashlib, base64, uuid, datetime
+import 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 call(uri, cfg, data_payload=None):
+    base_url = str(cfg.get("base_url", "")).rstrip("/")
+    app_id = str(cfg.get("app_id", ""))
+    app_key = str(cfg.get("app_key", ""))
+    access_key = str(cfg.get("access_key", ""))
+    secret_key = str(cfg.get("secret_key", ""))
+
+    request_id = str(uuid.uuid4())
+    hdr_date = datetime.datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S UTC")
+    to_sign = hdr_date + ":" + request_id + ":" + uri + ":" + app_key
+    sig = base64.b64encode(
+        hmac.new(base64.b64decode(secret_key), to_sign.encode("utf-8"), hashlib.sha1).digest()
+    ).decode("utf-8")
+
+    headers = {
+        "Authorization": "MC " + access_key + ":" + sig,
+        "x-mc-app-id": app_id,
+        "x-mc-date": hdr_date,
+        "x-mc-req-id": request_id,
+        "Content-Type": "application/json",
+        "Accept": "application/json",
+    }
+    body = {"data": [data_payload] if data_payload is not None else []}
+    req = urllib.request.Request(base_url + uri, data=json.dumps(body).encode("utf-8"), headers=headers, method="POST")
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        resp = json.loads(raw) if raw else {}
+    fails = resp.get("fail") if isinstance(resp, dict) else None
+    if fails:
+        # Mimecast returns errors in the 'fail' array even on HTTP 200
+        raise Exception("Mimecast error: " + json.dumps(fails))
+    return resp
+
+
+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):
+    admin = inputs.get("admin")
+    if admin is None:
+        admin = True
+    limit = inputs.get("limit")
+    if limit is None:
+        limit = 100
+    payload = {
+        "admin": bool(admin),
+        "pagination": {"pageSize": int(limit)},
+    }
+    return call("/api/gateway/get-hold-message-list", cfg, payload)
+
+
+_run(main)

integrations/mimecast/scripts/list_managed_urls.py

@@ -0,0 +1,62 @@
+import json, os, sys, hmac, hashlib, base64, uuid, datetime
+import 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 call(uri, cfg, data_payload=None):
+    base_url = str(cfg.get("base_url", "")).rstrip("/")
+    app_id = str(cfg.get("app_id", ""))
+    app_key = str(cfg.get("app_key", ""))
+    access_key = str(cfg.get("access_key", ""))
+    secret_key = str(cfg.get("secret_key", ""))
+
+    request_id = str(uuid.uuid4())
+    hdr_date = datetime.datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S UTC")
+    to_sign = hdr_date + ":" + request_id + ":" + uri + ":" + app_key
+    sig = base64.b64encode(
+        hmac.new(base64.b64decode(secret_key), to_sign.encode("utf-8"), hashlib.sha1).digest()
+    ).decode("utf-8")
+
+    headers = {
+        "Authorization": "MC " + access_key + ":" + sig,
+        "x-mc-app-id": app_id,
+        "x-mc-date": hdr_date,
+        "x-mc-req-id": request_id,
+        "Content-Type": "application/json",
+        "Accept": "application/json",
+    }
+    body = {"data": [data_payload] if data_payload is not None else []}
+    req = urllib.request.Request(base_url + uri, data=json.dumps(body).encode("utf-8"), headers=headers, method="POST")
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        resp = json.loads(raw) if raw else {}
+    fails = resp.get("fail") if isinstance(resp, dict) else None
+    if fails:
+        # Mimecast returns errors in the 'fail' array even on HTTP 200
+        raise Exception("Mimecast error: " + json.dumps(fails))
+    return resp
+
+
+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):
+    return call("/api/ttp/url/get-all-managed-urls", cfg, None)
+
+
+_run(main)

integrations/mimecast/scripts/reject_held_message.py

@@ -0,0 +1,69 @@
+import json, os, sys, hmac, hashlib, base64, uuid, datetime
+import 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 call(uri, cfg, data_payload=None):
+    base_url = str(cfg.get("base_url", "")).rstrip("/")
+    app_id = str(cfg.get("app_id", ""))
+    app_key = str(cfg.get("app_key", ""))
+    access_key = str(cfg.get("access_key", ""))
+    secret_key = str(cfg.get("secret_key", ""))
+
+    request_id = str(uuid.uuid4())
+    hdr_date = datetime.datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S UTC")
+    to_sign = hdr_date + ":" + request_id + ":" + uri + ":" + app_key
+    sig = base64.b64encode(
+        hmac.new(base64.b64decode(secret_key), to_sign.encode("utf-8"), hashlib.sha1).digest()
+    ).decode("utf-8")
+
+    headers = {
+        "Authorization": "MC " + access_key + ":" + sig,
+        "x-mc-app-id": app_id,
+        "x-mc-date": hdr_date,
+        "x-mc-req-id": request_id,
+        "Content-Type": "application/json",
+        "Accept": "application/json",
+    }
+    body = {"data": [data_payload] if data_payload is not None else []}
+    req = urllib.request.Request(base_url + uri, data=json.dumps(body).encode("utf-8"), headers=headers, method="POST")
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        resp = json.loads(raw) if raw else {}
+    fails = resp.get("fail") if isinstance(resp, dict) else None
+    if fails:
+        # Mimecast returns errors in the 'fail' array even on HTTP 200
+        raise Exception("Mimecast error: " + json.dumps(fails))
+    return resp
+
+
+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):
+    message_id = inputs.get("message_id")
+    if not message_id:
+        raise Exception("message_id is required")
+    payload = {"id": message_id}
+    reason = inputs.get("reason")
+    if reason:
+        payload["message"] = reason
+    return call("/api/gateway/hold-reject", cfg, payload)
+
+
+_run(main)

integrations/mimecast/scripts/release_held_message.py

@@ -0,0 +1,65 @@
+import json, os, sys, hmac, hashlib, base64, uuid, datetime
+import 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 call(uri, cfg, data_payload=None):
+    base_url = str(cfg.get("base_url", "")).rstrip("/")
+    app_id = str(cfg.get("app_id", ""))
+    app_key = str(cfg.get("app_key", ""))
+    access_key = str(cfg.get("access_key", ""))
+    secret_key = str(cfg.get("secret_key", ""))
+
+    request_id = str(uuid.uuid4())
+    hdr_date = datetime.datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S UTC")
+    to_sign = hdr_date + ":" + request_id + ":" + uri + ":" + app_key
+    sig = base64.b64encode(
+        hmac.new(base64.b64decode(secret_key), to_sign.encode("utf-8"), hashlib.sha1).digest()
+    ).decode("utf-8")
+
+    headers = {
+        "Authorization": "MC " + access_key + ":" + sig,
+        "x-mc-app-id": app_id,
+        "x-mc-date": hdr_date,
+        "x-mc-req-id": request_id,
+        "Content-Type": "application/json",
+        "Accept": "application/json",
+    }
+    body = {"data": [data_payload] if data_payload is not None else []}
+    req = urllib.request.Request(base_url + uri, data=json.dumps(body).encode("utf-8"), headers=headers, method="POST")
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        resp = json.loads(raw) if raw else {}
+    fails = resp.get("fail") if isinstance(resp, dict) else None
+    if fails:
+        # Mimecast returns errors in the 'fail' array even on HTTP 200
+        raise Exception("Mimecast error: " + json.dumps(fails))
+    return resp
+
+
+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):
+    message_id = inputs.get("message_id")
+    if not message_id:
+        raise Exception("message_id is required")
+    return call("/api/gateway/hold-release", cfg, {"id": message_id})
+
+
+_run(main)

integrations/mimecast/scripts/search_messages.py

@@ -0,0 +1,80 @@
+import json, os, sys, hmac, hashlib, base64, uuid, datetime
+import 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 call(uri, cfg, data_payload=None):
+    base_url = str(cfg.get("base_url", "")).rstrip("/")
+    app_id = str(cfg.get("app_id", ""))
+    app_key = str(cfg.get("app_key", ""))
+    access_key = str(cfg.get("access_key", ""))
+    secret_key = str(cfg.get("secret_key", ""))
+
+    request_id = str(uuid.uuid4())
+    hdr_date = datetime.datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S UTC")
+    to_sign = hdr_date + ":" + request_id + ":" + uri + ":" + app_key
+    sig = base64.b64encode(
+        hmac.new(base64.b64decode(secret_key), to_sign.encode("utf-8"), hashlib.sha1).digest()
+    ).decode("utf-8")
+
+    headers = {
+        "Authorization": "MC " + access_key + ":" + sig,
+        "x-mc-app-id": app_id,
+        "x-mc-date": hdr_date,
+        "x-mc-req-id": request_id,
+        "Content-Type": "application/json",
+        "Accept": "application/json",
+    }
+    body = {"data": [data_payload] if data_payload is not None else []}
+    req = urllib.request.Request(base_url + uri, data=json.dumps(body).encode("utf-8"), headers=headers, method="POST")
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        resp = json.loads(raw) if raw else {}
+    fails = resp.get("fail") if isinstance(resp, dict) else None
+    if fails:
+        # Mimecast returns errors in the 'fail' array even on HTTP 200
+        raise Exception("Mimecast error: " + json.dumps(fails))
+    return resp
+
+
+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):
+    from_addr = inputs.get("from")
+    to_addr = inputs.get("to")
+    subject = inputs.get("subject")
+    start = inputs.get("start")
+    end = inputs.get("end")
+
+    payload = {}
+    if from_addr:
+        payload["from"] = from_addr
+    if to_addr:
+        payload["to"] = to_addr
+    if subject:
+        payload["subject"] = subject
+    if start:
+        payload["start"] = start
+    if end:
+        payload["end"] = end
+
+    return call("/api/message-finder/search", cfg, payload)
+
+
+_run(main)

integrations/mimecast/scripts/test_connection.py

@@ -0,0 +1,63 @@
+import json, os, sys, hmac, hashlib, base64, uuid, datetime
+import 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 call(uri, cfg, data_payload=None):
+    base_url = str(cfg.get("base_url", "")).rstrip("/")
+    app_id = str(cfg.get("app_id", ""))
+    app_key = str(cfg.get("app_key", ""))
+    access_key = str(cfg.get("access_key", ""))
+    secret_key = str(cfg.get("secret_key", ""))
+
+    request_id = str(uuid.uuid4())
+    hdr_date = datetime.datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S UTC")
+    to_sign = hdr_date + ":" + request_id + ":" + uri + ":" + app_key
+    sig = base64.b64encode(
+        hmac.new(base64.b64decode(secret_key), to_sign.encode("utf-8"), hashlib.sha1).digest()
+    ).decode("utf-8")
+
+    headers = {
+        "Authorization": "MC " + access_key + ":" + sig,
+        "x-mc-app-id": app_id,
+        "x-mc-date": hdr_date,
+        "x-mc-req-id": request_id,
+        "Content-Type": "application/json",
+        "Accept": "application/json",
+    }
+    body = {"data": [data_payload] if data_payload is not None else []}
+    req = urllib.request.Request(base_url + uri, data=json.dumps(body).encode("utf-8"), headers=headers, method="POST")
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        resp = json.loads(raw) if raw else {}
+    fails = resp.get("fail") if isinstance(resp, dict) else None
+    if fails:
+        # Mimecast returns errors in the 'fail' array even on HTTP 200
+        raise Exception("Mimecast error: " + json.dumps(fails))
+    return resp
+
+
+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):
+    call("/api/account/get-account", cfg, None)
+    return {"ok": True}
+
+
+_run(main)