remember url-hash during login from 403

copyparty/httpcli.py

@@ -2302,6 +2302,10 @@ def handle_post_binary(self) -> bool:
     def handle_login(self) -> bool:
         assert self.parser
         pwd = self.parser.require("cppwd", 64)
+        try:
+            uhash = self.parser.require("uhash", 256)
+        except:
+            uhash = ""
         self.parser.drop()
 
         self.out_headerlist = [
@@ -2314,6 +2318,11 @@ def handle_login(self) -> bool:
 
         dst += self.ourlq()
 
+        uhash = uhash.lstrip("#")
+        if uhash not in ("", "-"):
+            dst += "&" if "?" in dst else "?"
+            dst += "_=1#" + html_escape(uhash, True, True)
+
         msg = self.get_pwd_cookie(pwd)
         html = self.j2s("msg", h1=msg, h2='<a href="' + dst + '">ack</a>', redir=dst)
         self.reply(html.encode("utf-8"))
@@ -4876,8 +4885,11 @@ def tx_browser(self) -> bool:
 
                 ogh["og:title"] = title
 
-                zs = '\t<meta property="%s" content="%s">'
-                oghs = [zs % (k, html_escape(str(v))) for k, v in ogh.items()]
+                oghs = [
+                    '\t<meta property="%s" content="%s">'
+                    % (k, html_escape(str(v), True, True))
+                    for k, v in ogh.items()
+                ]
                 zs = self.html_head + "\n%s\n" % ("\n".join(oghs),)
                 self.html_head = zs.replace("\n\n", "\n")
 

copyparty/web/splash.html

@@ -95,6 +95,7 @@ <h1 id="l">login for more:</h1>
 			<form method="post" enctype="multipart/form-data" action="{{ r }}/{{ qvpath }}">
 				<input type="hidden" name="act" value="login" />
 				<input type="password" name="cppwd" placeholder=" password" />
+				<input type="hidden" name="uhash" id="uhash" value="x" />
 				<input type="submit" value="Login" />
 				{% if ahttps %}
 				<a id="w" href="{{ ahttps }}">switch to https</a>

copyparty/web/splash.js

@@ -66,3 +66,5 @@ if (!ebi('c') && o.offsetTop + o.offsetHeight < window.innerHeight)
 o = ebi('u');
 if (o && /[0-9]+$/.exec(o.innerHTML))
 	o.innerHTML = shumantime(o.innerHTML);
+
+ebi('uhash').value = '' + location.hash;