From fa12c81a03754f7c997c0007969779d32de2b302 Mon Sep 17 00:00:00 2001
From: ed <s@ocv.me>
Date: Thu, 24 Mar 2022 01:31:50 +0100
Subject: [PATCH] zip-download files older than 1980-01-01

---
 copyparty/star.py |  7 ++++---
 copyparty/szip.py | 13 ++++++++-----
 copyparty/util.py |  4 ++--
 3 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/copyparty/star.py b/copyparty/star.py
index d771a1c6..b560f9d5 100644
--- a/copyparty/star.py
+++ b/copyparty/star.py
@@ -5,7 +5,7 @@ import tarfile
 import threading
 
 from .sutil import errdesc
-from .util import Queue, fsenc
+from .util import Queue, fsenc, min_ex
 from .bos import bos
 
 
@@ -88,8 +88,9 @@ class StreamTar(object):
 
             try:
                 self.ser(f)
-            except Exception as ex:
-                errors.append([f["vp"], repr(ex)])
+            except Exception:
+                ex = min_ex(5, True).replace("\n", "\n-- ")
+                errors.append([f["vp"], ex])
 
         if errors:
             self.errf, txt = errdesc(errors)
diff --git a/copyparty/szip.py b/copyparty/szip.py
index 1859e91b..8e18eace 100644
--- a/copyparty/szip.py
+++ b/copyparty/szip.py
@@ -1,13 +1,12 @@
 # coding: utf-8
 from __future__ import print_function, unicode_literals
 
-import os
 import time
 import zlib
 from datetime import datetime
 
 from .sutil import errdesc
-from .util import yieldfile, sanitize_fn, spack, sunpack
+from .util import yieldfile, sanitize_fn, spack, sunpack, min_ex
 from .bos import bos
 
 
@@ -36,7 +35,10 @@ def unixtime2dos(ts):
 
     bd = ((dy - 1980) << 9) + (dm << 5) + dd
     bt = (th << 11) + (tm << 5) + ts // 2
-    return spack(b"<HH", bt, bd)
+    try:
+        return spack(b"<HH", bt, bd)
+    except:
+        return b"\x00\x00\x21\x00"
 
 
 def gen_fdesc(sz, crc32, z64):
@@ -244,8 +246,9 @@ class StreamZip(object):
             try:
                 for x in self.ser(f):
                     yield x
-            except Exception as ex:
-                errors.append([f["vp"], repr(ex)])
+            except Exception:
+                ex = min_ex(5, True).replace("\n", "\n-- ")
+                errors.append([f["vp"], ex])
 
         if errors:
             errf, txt = errdesc(errors)
diff --git a/copyparty/util.py b/copyparty/util.py
index fb5f6723..9cba506a 100644
--- a/copyparty/util.py
+++ b/copyparty/util.py
@@ -485,13 +485,13 @@ def vol_san(vols, txt):
     return txt
 
 
-def min_ex():
+def min_ex(max_lines=8, reverse=False):
     et, ev, tb = sys.exc_info()
     tb = traceback.extract_tb(tb)
     fmt = "{} @ {} <{}>: {}"
     ex = [fmt.format(fp.split(os.sep)[-1], ln, fun, txt) for fp, ln, fun, txt in tb]
     ex.append("[{}] {}".format(et.__name__, ev))
-    return "\n".join(ex[-8:])
+    return "\n".join(ex[-max_lines:][:: -1 if reverse else 1])
 
 
 @contextlib.contextmanager