Update pdtest

pdtest.py

@@ -4,6 +4,8 @@ from typing import Union
 from cryptography.hazmat.primitives import serialization as ser
 from cryptography.hazmat.primitives.asymmetric import padding
 import requests as r
+from urllib.parse import urlparse, urlencode
+from posixpath import basename
 
 HOST = "http://localhost:8080"
 HEADERS = {}
@@ -36,6 +38,17 @@ def post(path: str, token: Union[bytes, str] = None, token_id: int = None,
     return r.post(f"{HOST}/{path}", headers=h, data=data)
 
 
+def gen_sign(data, token: bytes):
+    keys = sorted([i for i in data.keys()])
+    u = sha512()
+    u.update(token)
+    for key in keys:
+        u.update(key.encode() if isinstance(key, str) else key)
+        v = data[key]
+        u.update(v.encode() if isinstance(v, str) else v)
+    return u.hexdigest()
+
+
 def get(path: str, token: Union[bytes, str] = None, token_id: int = None,
         data=None):
     if data is None:
@@ -44,14 +57,7 @@ def get(path: str, token: Union[bytes, str] = None, token_id: int = None,
         return r.get(f"{HOST}/{path}", data=data, headers=HEADERS)
     if isinstance(token, str):
         token = b64decode(token)
-    keys = sorted([i for i in data.keys()])
+    h = {'X-TOKEN-ID': str(token_id), 'X-SIGN': gen_sign(data, token)}
-    u = sha512()
-    u.update(token)
-    for key in keys:
-        u.update(key.encode() if isinstance(key, str) else key)
-        v = data[key]
-        u.update(v.encode() if isinstance(v, str) else v)
-    h = {'X-TOKEN-ID': str(token_id), 'X-SIGN': u.hexdigest()}
     h.update(HEADERS)
     return r.get(f"{HOST}/{path}", headers=h, data=data)
 
@@ -73,3 +79,15 @@ def add_user(username: str, password: str, name: str,
         token_id = None
     pas = key.encrypt(password.encode(), padding.PKCS1v15())
     return check_err(post("/auth/user/add", token, token_id, {"username": username, "name": name, "password": b64encode(pas)}).json())  # noqa: E501
+
+
+def get_proxy_pixiv_url(url: str, secrets: str):
+    u = urlparse(url)
+    if u.scheme not in ['http', 'https']:
+        raise ValueError("Invalid url.")
+    if not u.netloc.endswith(".pximg.net"):
+        raise ValueError("Server only accept pximg.net URL.")
+    data = {'url': url}
+    data['sign'] = gen_sign(data, secrets.encode())
+    name = basename(u.path)
+    return f"{HOST}/proxy/pixiv/{name}?{urlencode(data)}"