api for rescanning multiple volumes;

`?scan=/foo,/bar` will perform a filesystem reindexing of volumes
`/foo` and `/bar` even if they only have `e2d` and not `e2ds`

Author: 9001

README.md

@@ -1501,7 +1501,6 @@ the same arguments can be set as volflags, in addition to `d2d`, `d2ds`, `d2t`,
 note:
 * upload-times can be displayed in the file listing by enabling the `.up_at` metadata key, either globally with `-e2d -mte +.up_at` or per-volume with volflags `e2d,mte=+.up_at` (will have a ~17% performance impact on directory listings)
 * `e2tsr` is probably always overkill, since `e2ds`/`e2dsa` would pick up any file modifications and `e2ts` would then reindex those, unless there is a new copyparty version with new parsers and the release note says otherwise
-* the rescan button in the admin panel has no effect unless the volume has `-e2ds` or higher
 
 config file example (these options are recommended btw):
 

copyparty/httpcli.py

@@ -5100,15 +5100,24 @@ def on40x(self, mods: list[str], vn: VFS, rem: str) -> str:
         return ""  # unhandled / fallthrough
 
     def scanvol(self) -> bool:
-        if not self.can_admin:
-            raise Pebkac(403, "'scanvol' not allowed for user " + self.uname)
-
         if self.args.no_rescan:
             raise Pebkac(403, "the rescan feature is disabled in server config")
 
-        vn, _ = self.asrv.vfs.get(self.vpath, self.uname, True, True)
+        vpaths = self.uparam["scan"].split(",/")
+        if vpaths == [""]:
+            vpaths = [self.vpath]
+
+        vols = []
+        for vpath in vpaths:
+            vn, _ = self.asrv.vfs.get(vpath, self.uname, True, True)
+            vols.append(vn.vpath)
+            if self.uname not in vn.axs.uadmin:
+                self.log("rejected scanning [%s] => [%s];" % (vpath, vn.vpath), 3)
+                raise Pebkac(403, "'scanvol' not allowed for user " + self.uname)
+
+        self.log("trying to rescan %d volumes: %r" % (len(vols), vols))
 
-        args = [self.asrv.vfs.all_vols, [vn.vpath], False, True]
+        args = [self.asrv.vfs.all_vols, vols, False, True]
 
         x = self.conn.hsrv.broker.ask("up2k.rescan", *args)
         err = x.get()

docs/devnotes.md

@@ -261,6 +261,7 @@ upload modifiers:
 |--|--|--|
 | GET | `?reload=cfg` | reload config files and rescan volumes |
 | GET | `?scan` | initiate a rescan of the volume which provides URL |
+| GET | `?scan=/a,/b` | initiate a rescan of volumes `/a` and `/b` |
 | GET | `?stack` | show a stacktrace of all threads |
 
 ## general