webdav: support write-only folders + force auth option

copyparty/__main__.py

@@ -785,6 +785,7 @@ def add_webdav(ap):
     ap2.add_argument("--dav-inf", action="store_true", help="allow depth:infinite requests (recursive file listing); extremely server-heavy but required for spec compliance -- luckily few clients rely on this")
     ap2.add_argument("--dav-mac", action="store_true", help="disable apple-garbage filter -- allow macos to create junk files (._* and .DS_Store, .Spotlight-*, .fseventsd, .Trashes, .AppleDouble, __MACOS)")
     ap2.add_argument("--dav-rt", action="store_true", help="show symlink-destination's lastmodified instead of the link itself; always enabled for recursive listings (volflag=davrt)")
+    ap2.add_argument("--dav-auth", action="store_true", help="force auth for all folders (required by davfs2 when only some folders are world-readable) (volflag=davauth)")
 
 
 def add_smb(ap):

copyparty/cfg.py

@@ -13,6 +13,7 @@ def vf_bmap() -> dict[str, str]:
         "no_dedup": "copydupes",
         "no_dupe": "nodupe",
         "no_forget": "noforget",
+        "dav_auth": "davauth",
         "dav_rt": "davrt",
     }
     for k in (
@@ -144,6 +145,7 @@ flagcats = {
     },
     "others": {
         "fk=8": 'generates per-file accesskeys,\nwhich will then be required at the "g" permission',
+        "davauth": "ask webdav clients to login for all folders",
         "davrt": "show lastmod time of symlink destination, not the link itself\n(note: this option is always enabled for recursive listings)",
     },
 }

copyparty/httpcli.py

@@ -830,13 +830,16 @@ class HttpCli(object):
         if self.args.no_dav:
             raise Pebkac(405, "WebDAV is disabled in server config")
 
+        vn, rem = self.asrv.vfs.get(self.vpath, self.uname, False, False, err=401)
+        tap = vn.canonical(rem)
+
+        if "davauth" in vn.flags and self.uname == "*":
+            self.can_read = self.can_write = self.can_get = False
+
         if not self.can_read and not self.can_write and not self.can_get:
-            if self.vpath:
             self.log("inaccessible: [{}]".format(self.vpath))
             raise Pebkac(401, "authenticate")
 
-            self.uparam["h"] = ""
-
         from .dxml import parse_xml
 
         # enc = "windows-31j"
@@ -879,8 +882,6 @@ class HttpCli(object):
             ]
 
         props = set(props_lst)
-        vn, rem = self.asrv.vfs.get(self.vpath, self.uname, True, False, err=401)
-        tap = vn.canonical(rem)
         depth = self.headers.get("depth", "infinity").lower()
 
         try:
@@ -890,7 +891,7 @@ class HttpCli(object):
                 raise
             raise Pebkac(404)
 
-        if not stat.S_ISDIR(topdir["st"].st_mode):
+        if depth == "0" or not self.can_read or not stat.S_ISDIR(topdir["st"].st_mode):
             fgen = []
 
         elif depth == "infinity":
@@ -932,9 +933,6 @@ class HttpCli(object):
             ls += [{"vp": v, "st": zsr} for v in vfs_virt]
             fgen = ls  # type: ignore
 
-        elif depth == "0":
-            fgen = []  # type: ignore
-
         else:
             t = "invalid depth value '{}' (must be either '0' or '1'{})"
             t2 = " or 'infinity'" if self.args.dav_inf else ""