override domain for shares (closes #1211);

`shr-site` will override the scheme and domain (https://example.com/)
in the link to a newly created share, making it possible to create a
share from a LAN IP while obtaining an external URL in return

---------

Co-authored-by: mechabubba <stevenvanniisprettycool@gmail.com>

copyparty/__main__.py

@@ -1173,6 +1173,7 @@ def add_general(ap, nc, srvname):
     ap2.add_argument("--name", metavar="TXT", type=u, default=srvname, help="server name (displayed topleft in browser and in mDNS)")
     ap2.add_argument("--name-url", metavar="TXT", type=u, help="URL for server name hyperlink (displayed topleft in browser)")
     ap2.add_argument("--name-html", type=u, help=argparse.SUPPRESS)
+    ap2.add_argument("--site", metavar="URL", type=u, default="", help="public URL to assume when creating links; example: [\033[32mhttps://example.com/\033[0m]")
     ap2.add_argument("--mime", metavar="EXT=MIME", type=u, action="append", help="\033[34mREPEATABLE:\033[0m map file \033[33mEXT\033[0mension to \033[33mMIME\033[0mtype, for example [\033[32mjpg=image/jpeg\033[0m]")
     ap2.add_argument("--mimes", action="store_true", help="list default mimetype mapping and exit")
     ap2.add_argument("--rmagic", action="store_true", help="do expensive analysis to improve accuracy of returned mimetypes; will make file-downloads, rss, and webdav slower (volflag=rmagic)")
@@ -1220,6 +1221,7 @@ def add_share(ap):
     ap2.add_argument("--shr-who", metavar="TXT", type=u, default="auth", help="who can create a share? [\033[32mno\033[0m]=nobody, [\033[32ma\033[0m]=admin-permission, [\033[32mauth\033[0m]=authenticated (volflag=shr_who)")
     ap2.add_argument("--shr-adm", metavar="U,U", type=u, default="", help="comma-separated list of users allowed to view/delete any share")
     ap2.add_argument("--shr-rt", metavar="MIN", type=int, default=1440, help="shares can be revived by their owner if they expired less than MIN minutes ago; [\033[32m60\033[0m]=hour, [\033[32m1440\033[0m]=day, [\033[32m10080\033[0m]=week")
+    ap2.add_argument("--shr-site", metavar="URL", type=u, default="--site", help="public URL to assume when creating share-links; example: [\033[32mhttps://example.com/\033[0m]")
     ap2.add_argument("--shr-v", action="store_true", help="debug")
 
 

copyparty/authsrv.py

@@ -3181,6 +3181,11 @@ class AuthSrv(object):
             for zs in zs.split():
                 if getattr(self.args, zs, False):
                     js_htm[zs] = 1
+            zs = "up_site"
+            for zs in zs.split():
+                zs2 = getattr(self.args, zs, "")
+                if zs2:
+                    js_htm[zs] = zs2
             vn.js_htm = json_hesc(json.dumps(js_htm))
 
         vols = list(vfs.all_nodes.values())

copyparty/httpcli.py

@@ -6170,8 +6170,20 @@ class HttpCli(object):
                 zsl = [html_escape(zst[0]) for zst in zstl]
                 r[4] = "<br />".join(zsl)
 
+        if self.args.shr_site:
+            site = self.args.shr_site[:-1]
+        elif self.is_vproxied:
+            site = self.args.SR
+        else:
+            site = ""
+
         html = self.j2s(
-            "shares", this=self, shr=self.args.shr, rows=rows, now=int(time.time())
+            "shares",
+            this=self,
+            shr=self.args.shr,
+            site=site,
+            rows=rows,
+            now=int(time.time()),
         )
         self.reply(html.encode("utf-8"), status=200)
         return True
@@ -6326,14 +6338,22 @@ class HttpCli(object):
         fn = quotep(fns[0]) if len(fns) == 1 else ""
 
         # NOTE: several clients (frontend, party-up) expect url at response[15:]
-        surl = "created share: %s://%s%s%s%s/%s" % (
-            "https" if self.is_https else "http",
-            self.host,
-            self.args.SR,
-            self.args.shr,
-            skey,
-            fn,
-        )
+        if self.args.shr_site:
+            surl = "created share: %s%s%s/%s" % (
+                self.args.shr_site,
+                self.args.shr[1:],
+                skey,
+                fn,
+            )
+        else:
+            surl = "created share: %s://%s%s%s%s/%s" % (
+                "https" if self.is_https else "http",
+                self.host,
+                self.args.SR,
+                self.args.shr,
+                skey,
+                fn,
+            )
         self.loud_reply(surl, status=201)
         return True
 

copyparty/svchub.py

@@ -315,6 +315,10 @@ class SvcHub(object):
         args.doctitle = args.doctitle.replace("--name", args.vname)
         args.bname = args.bname.replace("--name", args.vname) or args.vname
 
+        for zs in ("shr_site",):
+            if getattr(args, zs) == "--site":
+                setattr(args, zs, args.site)
+
         if args.log_fk:
             args.log_fk = re.compile(args.log_fk)
 

copyparty/web/shares.html

@@ -40,7 +40,7 @@
         {%- for k, pw, vp, pr, st, un, t0, t1 in rows %}
         <tr>
             <td>
-                <a href="{{ r }}{{ shr }}{{ k }}?qr">qr</a>
+                <a href="{{ site }}{{ shr }}{{ k }}?qr">qr</a>
                 <a href="{{ r }}{{ shr }}{{ k }}">{{ k }}</a>
             </td>
             <td><a href="#" k="{{ k }}">delete</a></td>