add optional version number on controlpanel

copyparty/__main__.py

@@ -992,6 +992,7 @@ def add_ui(ap, retry):
     ap2.add_argument("--txt-max", metavar="KiB", type=int, default=64, help="max size of embedded textfiles on ?doc= (anything bigger will be lazy-loaded by JS)")
     ap2.add_argument("--doctitle", metavar="TXT", type=u, default="copyparty", help="title / service-name to show in html documents")
     ap2.add_argument("--pb-url", metavar="URL", type=u, default="https://github.com/9001/copyparty", help="powered-by link; disable with -np")
+    ap2.add_argument("--ver", action="store_true", help="show version on the control panel (incompatible by -np)")
     ap2.add_argument("--md-sbf", metavar="FLAGS", type=u, default="downloads forms popups scripts top-navigation-by-user-activation", help="list of capabilities to ALLOW for README.md docs (volflag=md_sbf); see https://developer.mozilla.org/en-US/docs/Web/HTML/Element/iframe#attr-sandbox")
     ap2.add_argument("--lg-sbf", metavar="FLAGS", type=u, default="downloads forms popups scripts top-navigation-by-user-activation", help="list of capabilities to ALLOW for prologue/epilogue docs  (volflag=lg_sbf)")
     ap2.add_argument("--no-sb-md", action="store_true", help="don't sandbox README.md documents (volflags: no_sb_md | sb_md)")

copyparty/httpcli.py

@@ -28,6 +28,7 @@ except:
     pass
 
 from .__init__ import ANYWIN, PY2, TYPE_CHECKING, EnvParams, unicode
+from .__version__ import S_VERSION
 from .authsrv import VFS  # typechk
 from .bos import bos
 from .star import StreamTar
@@ -2875,6 +2876,7 @@ class HttpCli(object):
             dbwt=vs["dbwt"],
             url_suf=suf,
             k304=self.k304(),
+            ver=S_VERSION if self.args.ver else "",
         )
         self.reply(html.encode("utf-8"))
         return True

copyparty/web/splash.html

@@ -99,7 +99,7 @@
 	</div>
 	<a href="#" id="repl">π</a>
 	{%- if not this.args.nb %}
-	<span id="pb"><span>powered by</span> <a href="{{ this.args.pb_url }}">copyparty</a></span>
+	<span id="pb"><span>powered by</span> <a href="{{ this.args.pb_url }}">copyparty {{ver}}</a></span>
 	{%- endif %}
 	<script>