u2c: add hashgen mode + fix shutdown lag

bin/u2c.py

@@ -1,8 +1,8 @@
 #!/usr/bin/env python3
 from __future__ import print_function, unicode_literals
 
-S_VERSION = "1.23"
-S_BUILD_DT = "2024-08-22"
+S_VERSION = "1.24"
+S_BUILD_DT = "2024-09-05"
 
 """
 u2c.py: upload to copyparty
@@ -41,19 +41,25 @@
 
 try:
     import requests
+
+    req_ses = requests.Session()
 except ImportError as ex:
-    if EXE:
+    if "-" in sys.argv or "-h" in sys.argv:
+        m = ""
+    elif EXE:
         raise
     elif sys.version_info > (2, 7):
-        m = "\nERROR: need 'requests'; please run this command:\n {0} -m pip install --user requests\n"
+        m = "\nERROR: need 'requests'{0}; please run this command:\n {1} -m pip install --user requests\n"
     else:
         m = "requests/2.18.4 urllib3/1.23 chardet/3.0.4 certifi/2020.4.5.1 idna/2.7"
         m = ["   https://pypi.org/project/" + x + "/#files" for x in m.split()]
-        m = "\n  ERROR: need these:\n" + "\n".join(m) + "\n"
+        m = "\n  ERROR: need these{0}:\n" + "\n".join(m) + "\n"
         m += "\n  for f in *.whl; do unzip $f; done; rm -r *.dist-info\n"
 
-    print(m.format(sys.executable), "\nspecifically,", ex)
-    sys.exit(1)
+    if m:
+        t = " when not running with '-h' or url '-'"
+        print(m.format(t, sys.executable), "\nspecifically,", ex)
+        sys.exit(1)
 
 
 # from copyparty/__init__.py
@@ -76,7 +82,22 @@
 VT100 = platform.system() != "Windows"
 
 
-req_ses = requests.Session()
+try:
+    UTC = datetime.timezone.utc
+except:
+    TD_ZERO = datetime.timedelta(0)
+
+    class _UTC(datetime.tzinfo):
+        def utcoffset(self, dt):
+            return TD_ZERO
+
+        def tzname(self, dt):
+            return "UTC"
+
+        def dst(self, dt):
+            return TD_ZERO
+
+    UTC = _UTC()
 
 
 class Daemon(threading.Thread):
@@ -271,6 +292,12 @@ def hash_at(self, nch):
 _print = print
 
 
+def safe_print(*a, **ka):
+    ka["end"] = ""
+    zs = " ".join([unicode(x) for x in a])
+    _print(zs + "\n", **ka)
+
+
 def eprint(*a, **ka):
     ka["file"] = sys.stderr
     ka["end"] = ""
@@ -284,18 +311,17 @@ def eprint(*a, **ka):
 
 def flushing_print(*a, **ka):
     try:
-        _print(*a, **ka)
+        safe_print(*a, **ka)
     except:
         v = " ".join(str(x) for x in a)
         v = v.encode("ascii", "replace").decode("ascii")
-        _print(v, **ka)
+        safe_print(v, **ka)
 
     if "flush" not in ka:
         sys.stdout.flush()
 
 
-if not VT100:
-    print = flushing_print
+print = safe_print if VT100 else flushing_print
 
 
 def termsize():
@@ -770,8 +796,6 @@ def __init__(self, ar, stats=None):
             self.up_c = 0
             self.up_b = 0
             self.up_br = 0
-            self.hasher_busy = 1
-            self.handshaker_busy = 0
             self.uploader_busy = 0
             self.serialized = False
 
@@ -781,6 +805,9 @@ def __init__(self, ar, stats=None):
             self.eta = "99:99:99"
 
             self.mutex = threading.Lock()
+            self.exit_cond = threading.Condition()
+            self.uploader_alive = ar.j
+            self.handshaker_alive = ar.j
             self.q_handshake = Queue()  # type: Queue[File]
             self.q_upload = Queue()  # type: Queue[FileSlice]
 
@@ -851,27 +878,21 @@ def _fancy(self):
             Daemon(self.handshaker)
             Daemon(self.uploader)
 
-        idles = 0
-        while idles < 3:
-            time.sleep(0.07)
+        while True:
+            with self.exit_cond:
+                self.exit_cond.wait(0.07)
             with self.mutex:
-                if (
-                    self.q_handshake.empty()
-                    and self.q_upload.empty()
-                    and not self.hasher_busy
-                    and not self.handshaker_busy
-                    and not self.uploader_busy
-                ):
-                    idles += 1
-                else:
-                    idles = 0
+                if not self.handshaker_alive and not self.uploader_alive:
+                    break
+                st_hash = self.st_hash[:]
+                st_up = self.st_up[:]
 
             if VT100 and not self.ar.ns:
                 maxlen = ss.w - len(str(self.nfiles)) - 14
                 txt = "\033[s\033[{0}H".format(ss.g)
                 for y, k, st, f in [
-                    [0, "hash", self.st_hash, self.hash_f],
-                    [1, "send", self.st_up, self.up_f],
+                    [0, "hash", st_hash, self.hash_f],
+                    [1, "send", st_up, self.up_f],
                 ]:
                     txt += "\033[{0}H{1}:".format(ss.g + y, k)
                     file, arg = st
@@ -1027,20 +1048,53 @@ def hasher(self):
                 self.hash_f += 1
                 self.hash_c += len(file.cids)
                 self.hash_b += file.size
+                if self.ar.wlist:
+                    self.up_f = self.hash_f
+                    self.up_c = self.hash_c
+                    self.up_b = self.hash_b
+
+            if self.ar.wlist:
+                zsl = [self.ar.wsalt, str(file.size)] + [x[0] for x in file.kchunks]
+                zb = hashlib.sha512("\n".join(zsl).encode("utf-8")).digest()[:33]
+                wark = base64.urlsafe_b64encode(zb).decode("utf-8")
+                vp = file.rel.decode("utf-8")
+                if self.ar.jw:
+                    print("%s  %s" % (wark, vp))
+                else:
+                    zd = datetime.datetime.fromtimestamp(file.lmod, UTC)
+                    dt = "%04d-%02d-%02d %02d:%02d:%02d" % (
+                        zd.year,
+                        zd.month,
+                        zd.day,
+                        zd.hour,
+                        zd.minute,
+                        zd.second,
+                    )
+                    print("%s %12d %s %s" % (dt, file.size, wark, vp))
+                continue
 
             self.q_handshake.put(file)
 
-        self.hasher_busy = 0
         self.st_hash = [None, "(finished)"]
+        self._check_if_done()
+
+    def _check_if_done(self):
+        with self.mutex:
+            if self.nfiles - self.up_f:
+                return
+        for _ in range(self.ar.j):
+            self.q_handshake.put(None)
 
     def handshaker(self):
         search = self.ar.s
         burl = self.ar.url[:8] + self.ar.url[8:].split("/")[0] + "/"
         while True:
             file = self.q_handshake.get()
             if not file:
+                with self.mutex:
+                    self.handshaker_alive -= 1
                 self.q_upload.put(None)
-                break
+                return
 
             upath = file.abs.decode("utf-8", "replace")
             if not VT100:
@@ -1052,27 +1106,24 @@ def handshaker(self):
                 self.errs += 1
                 continue
 
-            with self.mutex:
-                self.handshaker_busy += 1
-
             while time.time() < file.cd:
                 time.sleep(0.1)
 
             hs, sprs = handshake(self.ar, file, search)
             if search:
                 if hs:
                     for hit in hs:
-                        t = "found: {0}\n  {1}{2}\n"
-                        print(t.format(upath, burl, hit["rp"]), end="")
+                        t = "found: {0}\n  {1}{2}"
+                        print(t.format(upath, burl, hit["rp"]))
                 else:
-                    print("NOT found: {0}\n".format(upath), end="")
+                    print("NOT found: {0}".format(upath))
 
                 with self.mutex:
                     self.up_f += 1
                     self.up_c += len(file.cids)
                     self.up_b += file.size
-                    self.handshaker_busy -= 1
 
+                self._check_if_done()
                 continue
 
             if file.recheck:
@@ -1104,7 +1155,6 @@ def handshaker(self):
                         file.up_b -= sz
 
                 file.ucids = hs
-                self.handshaker_busy -= 1
 
             if not hs:
                 self.at_hash += file.t_hash
@@ -1130,6 +1180,9 @@ def handshaker(self):
                     kw = "uploaded" if file.up_b else "   found"
                     print("{0} {1}".format(kw, upath))
 
+                self._check_if_done()
+                continue
+
             chunksz = up2k_chunksize(file.size)
             njoin = (self.ar.sz * 1024 * 1024) // chunksz
             cs = hs[:]
@@ -1149,8 +1202,16 @@ def uploader(self):
         while True:
             fsl = self.q_upload.get()
             if not fsl:
-                self.st_up = [None, "(finished)"]
-                break
+                done = False
+                with self.mutex:
+                    self.uploader_alive -= 1
+                    if not self.uploader_alive:
+                        done = not self.handshaker_alive
+                        self.st_up = [None, "(finished)"]
+                if done:
+                    with self.exit_cond:
+                        self.exit_cond.notify_all()
+                return
 
             file = fsl.file
             cids = fsl.cids
@@ -1252,6 +1313,10 @@ def main():
     ap.add_argument("--dr", action="store_true", help="delete remote files which don't exist locally (implies --ow)")
     ap.add_argument("--drd", action="store_true", help="delete remote files during upload instead of afterwards; reduces peak disk space usage, but will reupload instead of detecting renames")
 
+    ap = app.add_argument_group("file-ID calculator; enable with url '-' to list warks (file identifiers) instead of upload/search")
+    ap.add_argument("--wsalt", type=unicode, metavar="S", default="hunter2", help="salt to use when creating warks; must match server config")
+    ap.add_argument("--jw", action="store_true", help="just identifier+filepath, not mtime/size too")
+
     ap = app.add_argument_group("performance tweaks")
     ap.add_argument("-j", type=int, metavar="CONNS", default=2, help="parallel connections")
     ap.add_argument("-J", type=int, metavar="CORES", default=hcores, help="num cpu-cores to use for hashing; set 0 or 1 for single-core hashing")
@@ -1285,7 +1350,9 @@ def main():
 
     ar.x = "|".join(ar.x or [])
 
-    for k in "dl dr drd".split():
+    setattr(ar, "wlist", ar.url == "-")
+
+    for k in "dl dr drd wlist".split():
         errs = []
         if ar.safe and getattr(ar, k):
             errs.append(k)