✨ ding: send by webhook

close: #189

Feature: 钉钉添加 `send_by_webhook` 方法 #189

packages/nonebot-adapter-ding/nonebot/adapters/ding/bot.py

@@ -1,6 +1,9 @@
 import hmac
 import base64
+import urllib.parse
+
 from datetime import datetime
+import time
 from typing import Any, Union, Optional, TYPE_CHECKING
 
 import httpx
@@ -10,7 +13,7 @@ from nonebot.message import handle_event
 from nonebot.adapters import Bot as BaseBot
 from nonebot.exception import RequestDenied
 
-from .utils import log
+from .utils import calc_hmac_base64, log
 from .config import Config as DingConfig
 from .message import Message, MessageSegment
 from .exception import NetworkError, ApiNotAvailable, ActionFailed, SessionExpired
@@ -20,7 +23,7 @@ if TYPE_CHECKING:
     from nonebot.config import Config
     from nonebot.drivers import Driver
 
-SEND_BY_SESSION_WEBHOOK = "send_by_sessionWebhook"
+SEND = "send"
 
 
 class Bot(BaseBot):
@@ -72,10 +75,8 @@ class Bot(BaseBot):
             if not sign:
                 log("WARNING", "Missing Signature Header")
                 raise RequestDenied(400, "Missing `sign` Header")
-            string_to_sign = f"{timestamp}\n{secret}"
-            sig = hmac.new(secret.encode("utf-8"),
-                           string_to_sign.encode("utf-8"), "sha256").digest()
-            if sign != base64.b64encode(sig).decode("utf-8"):
+            sign_base64 = calc_hmac_base64(str(timestamp), secret)
+            if sign != sign_base64.decode('utf-8'):
                 log("WARNING", "Signature Header is invalid")
                 raise RequestDenied(403, "Signature is invalid")
         else:
@@ -142,49 +143,63 @@ class Bot(BaseBot):
                 return await bot.call_api(api, **data)
 
         log("DEBUG", f"Calling API <y>{api}</y>")
+        params = {}
+        # 传入参数有 webhook，则使用传入的 webhook
+        webhook = data.get("webhook")
 
-        if api == SEND_BY_SESSION_WEBHOOK:
+        if webhook:
+            secret = data.get("secret")
+            if secret:
+                # 有这个参数的时候再计算加签的值
+                timestamp = str(round(time.time() * 1000))
+                params["timestamp"] = timestamp
+                hmac_code_base64 = calc_hmac_base64(timestamp, secret)
+                sign = urllib.parse.quote_plus(hmac_code_base64)
+                params["sign"] = sign
+        else:
+            # webhook 不存在则使用 event 中的 sessionWebhook
             if event:
                 # 确保 sessionWebhook 没有过期
                 if int(datetime.now().timestamp()) > int(
                         event.sessionWebhookExpiredTime / 1000):
                     raise SessionExpired
 
-                target = event.sessionWebhook
+                webhook = event.sessionWebhook
             else:
                 raise ApiNotAvailable
 
-            headers = {}
-            message: Message = data.get("message", None)
-            if not message:
-                raise ValueError("Message not found")
-            try:
-                async with httpx.AsyncClient(headers=headers) as client:
-                    response = await client.post(
-                        target,
-                        params={"access_token": self.ding_config.access_token},
-                        json=message._produce(),
-                        timeout=self.config.api_timeout)
+        headers = {}
+        message: Message = data.get("message", None)
+        if not message:
+            raise ValueError("Message not found")
+        try:
+            async with httpx.AsyncClient(headers=headers) as client:
+                response = await client.post(webhook,
+                                             params=params,
+                                             json=message._produce(),
+                                             timeout=self.config.api_timeout)
 
-                if 200 <= response.status_code < 300:
-                    result = response.json()
-                    if isinstance(result, dict):
-                        if result.get("errcode") != 0:
-                            raise ActionFailed(errcode=result.get("errcode"),
-                                               errmsg=result.get("errmsg"))
-                        return result
-                raise NetworkError(f"HTTP request received unexpected "
-                                   f"status code: {response.status_code}")
-            except httpx.InvalidURL:
-                raise NetworkError("API root url invalid")
-            except httpx.HTTPError:
-                raise NetworkError("HTTP request failed")
+            if 200 <= response.status_code < 300:
+                result = response.json()
+                if isinstance(result, dict):
+                    if result.get("errcode") != 0:
+                        raise ActionFailed(errcode=result.get("errcode"),
+                                           errmsg=result.get("errmsg"))
+                    return result
+            raise NetworkError(f"HTTP request received unexpected "
+                               f"status code: {response.status_code}")
+        except httpx.InvalidURL:
+            raise NetworkError("API root url invalid")
+        except httpx.HTTPError:
+            raise NetworkError("HTTP request failed")
 
     @overrides(BaseBot)
     async def send(self,
                    event: MessageEvent,
                    message: Union[str, "Message", "MessageSegment"],
                    at_sender: bool = False,
+                   webhook: Optional[str] = None,
+                   secret: Optional[str] = None,
                    **kwargs) -> Any:
         """
         :说明:
@@ -196,6 +211,8 @@ class Bot(BaseBot):
           * ``event: Event``: Event 对象
           * ``message: Union[str, Message, MessageSegment]``: 要发送的消息
           * ``at_sender: bool``: 是否 @ 事件主体
+          * ``webhook: Optional[str]``: 该条消息将调用的 webhook 地址。不传则将使用 sessionWebhook，若其也不存在，该条消息不发送，使用自定义 webhook 时注意你设置的安全方式，如加关键词，IP地址，加签等等。
+          * ``secret: Optional[str]``: 如果你使用自定义的 webhook 地址，推荐使用加签方式对消息进行验证，将 `机器人安全设置页面，加签一栏下面显示的SEC开头的字符串` 传入这个参数即可。
           * ``**kwargs``: 覆盖默认参数
 
         :返回:
@@ -213,6 +230,9 @@ class Bot(BaseBot):
         at_sender = at_sender and bool(event.senderId)
         params = {}
         params["event"] = event
+        if webhook:
+            params["webhook"] = webhook
+            params["secret"] = secret
         params.update(kwargs)
 
         if at_sender and event.conversationType != ConversationType.private:
@@ -222,4 +242,4 @@ class Bot(BaseBot):
         else:
             params["message"] = msg
 
-        return await self.call_api(SEND_BY_SESSION_WEBHOOK, **params)
+        return await self.call_api(SEND, **params)