utcfromtimestamp was deprecated and nobody told me,

not even the deprecationwarning that got silently generated burning
20~30% of all CPU-time without actually displaying it anywhere, nice

python 3.12.0 is now only 5% slower than 3.11.6

also fixes some other, less-performance-fatal deprecations

copyparty/__main__.py

@@ -186,7 +186,10 @@ def init_E(E: EnvParams) -> None:
 
         with open_binary("copyparty", "z.tar") as tgz:
             with tarfile.open(fileobj=tgz) as tf:
-                tf.extractall(tdn)  # nosec (archive is safe)
+                try:
+                    tf.extractall(tdn, filter="tar")
+                except TypeError:
+                    tf.extractall(tdn)  # nosec (archive is safe)
 
         return tdn
 

copyparty/authsrv.py

@@ -23,6 +23,7 @@ from .util import (
     UNPLICATIONS,
     ODict,
     Pebkac,
+    UTC,
     absreal,
     afsenc,
     get_df,
@@ -215,7 +216,7 @@ class Lim(object):
             if self.rot_re.search(path.replace("\\", "/")):
                 return path, ""
 
-            suf = datetime.utcnow().strftime(self.rotf)
+            suf = datetime.now(UTC).strftime(self.rotf)
             if path:
                 path += "/"
 

copyparty/httpcli.py

@@ -42,6 +42,7 @@ from .util import (
     MultipartParser,
     ODict,
     Pebkac,
+    UTC,
     UnrecvEOF,
     absreal,
     alltrace,
@@ -3992,7 +3993,7 @@ class HttpCli(object):
                 margin = "-"
 
             sz = inf.st_size
-            zd = datetime.utcfromtimestamp(linf.st_mtime)
+            zd = datetime.fromtimestamp(linf.st_mtime, UTC)
             dt = "%04d-%02d-%02d %02d:%02d:%02d" % (
                 zd.year,
                 zd.month,

copyparty/sutil.py

@@ -8,7 +8,7 @@ from datetime import datetime
 from .__init__ import CORES
 from .bos import bos
 from .th_cli import ThumbCli
-from .util import vjoin
+from .util import UTC, vjoin
 
 if True:  # pylint: disable=using-constant-test
     from typing import Any, Generator, Optional
@@ -108,7 +108,7 @@ def errdesc(errors: list[tuple[str, str]]) -> tuple[dict[str, Any], list[str]]:
         tf_path = tf.name
         tf.write("\r\n".join(report).encode("utf-8", "replace"))
 
-    dt = datetime.utcnow().strftime("%Y-%m%d-%H%M%S")
+    dt = datetime.now(UTC).strftime("%Y-%m%d-%H%M%S")
 
     bos.chmod(tf_path, 0o444)
     return {

copyparty/svchub.py

@@ -45,6 +45,7 @@ from .util import (
     HLog,
     HMaccas,
     ODict,
+    UTC,
     alltrace,
     ansi_re,
     min_ex,
@@ -484,7 +485,7 @@ class SvcHub(object):
             self.args.nc = min(self.args.nc, soft // 2)
 
     def _logname(self) -> str:
-        dt = datetime.utcnow()
+        dt = datetime.now(UTC)
         fn = str(self.args.lo)
         for fs in "YmdHMS":
             fs = "%" + fs
@@ -733,7 +734,7 @@ class SvcHub(object):
             return
 
         with self.log_mutex:
-            zd = datetime.utcnow()
+            zd = datetime.now(UTC)
             ts = self.log_dfmt % (
                 zd.year,
                 zd.month * 100 + zd.day,
@@ -751,7 +752,7 @@ class SvcHub(object):
             self.logf.close()
             self._setup_logfile("")
 
-        dt = datetime.utcnow()
+        dt = datetime.now(UTC)
 
         # unix timestamp of next 00:00:00 (leap-seconds safe)
         day_now = dt.day
@@ -759,14 +760,20 @@ class SvcHub(object):
             dt += timedelta(hours=12)
 
         dt = dt.replace(hour=0, minute=0, second=0)
-        self.next_day = calendar.timegm(dt.utctimetuple())
+        try:
+            tt = dt.utctimetuple()
+        except:
+            # still makes me hella uncomfortable
+            tt = dt.timetuple()
+
+        self.next_day = calendar.timegm(tt)
 
     def _log_enabled(self, src: str, msg: str, c: Union[int, str] = 0) -> None:
         """handles logging from all components"""
         with self.log_mutex:
             now = time.time()
             if now >= self.next_day:
-                dt = datetime.utcfromtimestamp(now)
+                dt = datetime.fromtimestamp(now, UTC)
                 zs = "{}\n" if self.no_ansi else "\033[36m{}\033[0m\n"
                 zs = zs.format(dt.strftime("%Y-%m-%d"))
                 print(zs, end="")
@@ -789,7 +796,7 @@ class SvcHub(object):
                 else:
                     msg = "%s%s\033[0m" % (c, msg)
 
-            zd = datetime.utcfromtimestamp(now)
+            zd = datetime.fromtimestamp(now, UTC)
             ts = self.log_efmt % (
                 zd.hour,
                 zd.minute,

copyparty/util.py

@@ -25,7 +25,6 @@ import threading
 import time
 import traceback
 from collections import Counter
-from datetime import datetime
 from email.utils import formatdate
 
 from ipaddress import IPv4Address, IPv4Network, IPv6Address, IPv6Network
@@ -35,6 +34,27 @@ from .__init__ import ANYWIN, EXE, MACOS, PY2, TYPE_CHECKING, VT100, WINDOWS
 from .__version__ import S_BUILD_DT, S_VERSION
 from .stolen import surrogateescape
 
+try:
+    from datetime import datetime, timezone
+
+    UTC = timezone.utc
+except:
+    from datetime import datetime, timedelta, tzinfo
+
+    TD_ZERO = timedelta(0)
+
+    class _UTC(tzinfo):
+        def utcoffset(self, dt):
+            return TD_ZERO
+
+        def tzname(self, dt):
+            return "UTC"
+
+        def dst(self, dt):
+            return TD_ZERO
+
+    UTC = _UTC()
+
 
 if sys.version_info >= (3, 7) or (
     sys.version_info >= (3, 6) and platform.python_implementation() == "CPython"
@@ -1131,7 +1151,7 @@ def stackmon(fp: str, ival: float, suffix: str) -> None:
             buf = lzma.compress(buf, preset=0)
 
         if "%" in fp:
-            dt = datetime.utcnow()
+            dt = datetime.now(UTC)
             for fs in "YmdHMS":
                 fs = "%" + fs
                 if fs in fp: