truncate chunked PUT at sizelimit; closes #1272

copyparty/authsrv.py

@@ -249,9 +249,9 @@ class Lim(object):
             return
 
         x = broker.ask(volgetter, ptop)
-        nbytes, nfiles = x.get()
+        self.c_vb_v, nfiles = x.get()
 
-        if self.vbmax and self.vbmax < nbytes + sz:
+        if self.vbmax and self.vbmax < self.c_vb_v + sz:
             raise Pebkac(400, "volume has exceeded max size")
 
         if self.vnmax and self.vnmax < nfiles + 1:

copyparty/httpcli.py

@@ -2618,9 +2618,23 @@ class HttpCli(object):
         else:
             f, fn = ren_open(fn, *open_a, **params)
 
+        max_sz = 0
+        if lim and remains < 0:
+            if lim.vbmax:
+                max_sz = lim.c_vb_v
+            if lim.smax and (not max_sz or max_sz > lim.smax):
+                max_sz = lim.smax
+
         try:
             path = os.path.join(fdir, fn)
-            post_sz, sha_hex, sha_b64 = copier(reader, f, hasher, 0, self.args.s_wr_slp)
+            post_sz, sha_hex, sha_b64 = copier(
+                reader, f, hasher, max_sz, self.args.s_wr_slp
+            )
+        except:
+            if max_sz and self.sr.nb >= max_sz:
+                f.close()  # windows
+                wunlink(self.log, path, vfs.flags)
+            raise
         finally:
             f.close()