mirror of
https://github.com/langgenius/dify.git
synced 2026-02-19 01:14:44 +08:00
93 lines
3.9 KiB
Python
93 lines
3.9 KiB
Python
from __future__ import annotations
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import base64
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import hashlib
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import hmac
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import os
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import time
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import urllib.parse
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from .runtime import get_workflow_file_runtime
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def get_signed_file_url(upload_file_id: str, as_attachment: bool = False, for_external: bool = True) -> str:
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runtime = get_workflow_file_runtime()
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base_url = runtime.files_url if for_external else (runtime.internal_files_url or runtime.files_url)
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url = f"{base_url}/files/{upload_file_id}/file-preview"
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timestamp = str(int(time.time()))
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nonce = os.urandom(16).hex()
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key = runtime.secret_key.encode()
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msg = f"file-preview|{upload_file_id}|{timestamp}|{nonce}"
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sign = hmac.new(key, msg.encode(), hashlib.sha256).digest()
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encoded_sign = base64.urlsafe_b64encode(sign).decode()
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query: dict[str, str] = {"timestamp": timestamp, "nonce": nonce, "sign": encoded_sign}
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if as_attachment:
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query["as_attachment"] = "true"
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query_string = urllib.parse.urlencode(query)
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return f"{url}?{query_string}"
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def get_signed_file_url_for_plugin(filename: str, mimetype: str, tenant_id: str, user_id: str) -> str:
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runtime = get_workflow_file_runtime()
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# Plugin access should use internal URL for Docker network communication.
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base_url = runtime.internal_files_url or runtime.files_url
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url = f"{base_url}/files/upload/for-plugin"
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timestamp = str(int(time.time()))
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nonce = os.urandom(16).hex()
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key = runtime.secret_key.encode()
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msg = f"upload|{filename}|{mimetype}|{tenant_id}|{user_id}|{timestamp}|{nonce}"
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sign = hmac.new(key, msg.encode(), hashlib.sha256).digest()
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encoded_sign = base64.urlsafe_b64encode(sign).decode()
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return f"{url}?timestamp={timestamp}&nonce={nonce}&sign={encoded_sign}&user_id={user_id}&tenant_id={tenant_id}"
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def get_signed_tool_file_url(tool_file_id: str, extension: str, for_external: bool = True) -> str:
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runtime = get_workflow_file_runtime()
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return runtime.sign_tool_file(tool_file_id=tool_file_id, extension=extension, for_external=for_external)
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def verify_plugin_file_signature(
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*, filename: str, mimetype: str, tenant_id: str, user_id: str, timestamp: str, nonce: str, sign: str
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) -> bool:
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runtime = get_workflow_file_runtime()
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data_to_sign = f"upload|{filename}|{mimetype}|{tenant_id}|{user_id}|{timestamp}|{nonce}"
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secret_key = runtime.secret_key.encode()
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recalculated_sign = hmac.new(secret_key, data_to_sign.encode(), hashlib.sha256).digest()
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recalculated_encoded_sign = base64.urlsafe_b64encode(recalculated_sign).decode()
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if sign != recalculated_encoded_sign:
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return False
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current_time = int(time.time())
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return current_time - int(timestamp) <= runtime.files_access_timeout
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def verify_image_signature(*, upload_file_id: str, timestamp: str, nonce: str, sign: str) -> bool:
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runtime = get_workflow_file_runtime()
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data_to_sign = f"image-preview|{upload_file_id}|{timestamp}|{nonce}"
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secret_key = runtime.secret_key.encode()
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recalculated_sign = hmac.new(secret_key, data_to_sign.encode(), hashlib.sha256).digest()
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recalculated_encoded_sign = base64.urlsafe_b64encode(recalculated_sign).decode()
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if sign != recalculated_encoded_sign:
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return False
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current_time = int(time.time())
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return current_time - int(timestamp) <= runtime.files_access_timeout
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def verify_file_signature(*, upload_file_id: str, timestamp: str, nonce: str, sign: str) -> bool:
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runtime = get_workflow_file_runtime()
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data_to_sign = f"file-preview|{upload_file_id}|{timestamp}|{nonce}"
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secret_key = runtime.secret_key.encode()
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recalculated_sign = hmac.new(secret_key, data_to_sign.encode(), hashlib.sha256).digest()
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recalculated_encoded_sign = base64.urlsafe_b64encode(recalculated_sign).decode()
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if sign != recalculated_encoded_sign:
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return False
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current_time = int(time.time())
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return current_time - int(timestamp) <= runtime.files_access_timeout
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