New restart routine for executable files

Fix log in updater
New source option updater available

cps/about.py

@@ -48,6 +48,11 @@ try:
 except ImportError:
     flask_danceVersion = None
 
+try:
+    from greenlet import __version__ as greenlet_Version
+except ImportError:
+    greenlet_Version = None
+
 from . import services
 
 about = flask.Blueprint('about', __name__)
@@ -77,7 +82,8 @@ _VERSIONS = OrderedDict(
     python_LDAP = services.ldapVersion if bool(services.ldapVersion) else None,
     Goodreads = u'installed' if bool(services.goodreads_support) else None,
     jsonschema = services.SyncToken.__version__  if bool(services.SyncToken) else None,
-    flask_dance = flask_danceVersion
+    flask_dance = flask_danceVersion,
+    greenlet = greenlet_Version
 )
 _VERSIONS.update(uploader.get_versions())
 

cps/admin.py

@@ -56,7 +56,8 @@ log = logger.create()
 feature_support = {
         'ldap': bool(services.ldap),
         'goodreads': bool(services.goodreads_support),
-        'kobo':  bool(services.kobo)
+        'kobo':  bool(services.kobo),
+        'updater': constants.UPDATER_AVAILABLE
     }
 
 try:
@@ -1264,8 +1265,11 @@ def download_debug():
 @login_required
 @admin_required
 def get_update_status():
+    if feature_support['updater']:
         log.info(u"Update status requested")
         return updater_thread.get_available_updates(request.method, locale=get_locale())
+    else:
+        return ''
 
 
 @admi.route("/get_updater_status", methods=['GET', 'POST'])
@@ -1273,6 +1277,7 @@ def get_update_status():
 @admin_required
 def get_updater_status():
     status = {}
+    if feature_support['updater']:
         if request.method == "POST":
             commit = request.form.to_dict()
             if "start" in commit and commit['start'] == 'True':
@@ -1302,6 +1307,7 @@ def get_updater_status():
             except Exception:
                 status['status'] = 11
         return json.dumps(status)
+    return ''
 
 
 @admi.route('/import_ldap_users')

cps/constants.py

@@ -23,6 +23,7 @@ from collections import namedtuple
 
 # if installed via pip this variable is set to true
 HOME_CONFIG = False
+UPDATER_AVAILABLE = True
 
 # Base dir is parent of current file, necessary if called from different folder
 if sys.version_info < (3, 0):

cps/server.py

@@ -22,6 +22,7 @@ import os
 import errno
 import signal
 import socket
+import subprocess
 
 try:
     from gevent.pywsgi import WSGIServer
@@ -136,6 +137,64 @@ class WebServer(object):
 
         return sock, _readable_listen_address(*address)
 
+
+    def _get_args_for_reloading(self):
+        """Determine how the script was executed, and return the args needed
+        to execute it again in a new process.
+        Code from https://github.com/pyload/pyload. Author GammaC0de, voulter
+        """
+        rv = [sys.executable]
+        py_script = sys.argv[0]
+        args = sys.argv[1:]
+        # Need to look at main module to determine how it was executed.
+        __main__ = sys.modules["__main__"]
+
+        # The value of __package__ indicates how Python was called. It may
+        # not exist if a setuptools script is installed as an egg. It may be
+        # set incorrectly for entry points created with pip on Windows.
+        if getattr(__main__, "__package__", None) is None or (
+                os.name == "nt"
+                and __main__.__package__ == ""
+                and not os.path.exists(py_script)
+                and os.path.exists(f"{py_script}.exe")
+        ):
+            # Executed a file, like "python app.py".
+            py_script = os.path.abspath(py_script)
+
+            if os.name == "nt":
+                # Windows entry points have ".exe" extension and should be
+                # called directly.
+                if not os.path.exists(py_script) and os.path.exists(f"{py_script}.exe"):
+                    py_script += ".exe"
+
+                if (
+                        os.path.splitext(sys.executable)[1] == ".exe"
+                        and os.path.splitext(py_script)[1] == ".exe"
+                ):
+                    rv.pop(0)
+
+            rv.append(py_script)
+        else:
+            # Executed a module, like "python -m module".
+            if sys.argv[0] == "-m":
+                args = sys.argv
+            else:
+                if os.path.isfile(py_script):
+                    # Rewritten by Python from "-m script" to "/path/to/script.py".
+                    py_module = __main__.__package__
+                    name = os.path.splitext(os.path.basename(py_script))[0]
+
+                    if name != "__main__":
+                        py_module += f".{name}"
+                else:
+                    # Incorrectly rewritten by pydevd debugger from "-m script" to "script".
+                    py_module = py_script
+
+                rv.extend(("-m", py_module.lstrip(".")))
+
+        rv.extend(args)
+        return rv
+
     def _start_gevent(self):
         ssl_args = self.ssl_args or {}
 
@@ -199,11 +258,8 @@ class WebServer(object):
             return True
 
         log.info("Performing restart of Calibre-Web")
-        arguments = list(sys.argv)
-        arguments.insert(0, sys.executable)
-        if os.name == 'nt':
-            arguments = ["\"%s\"" % a for a in arguments]
-        os.execv(sys.executable, arguments)
+        args = self._get_args_for_reloading()
+        subprocess.call(args, close_fds=True)
         return True
 
     def _killServer(self, __, ___):

cps/templates/admin.html

@@ -168,9 +168,11 @@
         </tbody>
       </table>
 
+      {%  if feature_support['updater'] %}
       <div class="hidden" id="update_error"> <span>{{update_error}}</span></div>
       <div class="btn btn-primary" id="check_for_update">{{_('Check for Update')}}</div>
       <div class="btn btn-primary hidden" id="perform_update" data-toggle="modal" data-target="#StatusDialog">{{_('Perform Update')}}</div>
+      {%  endif %}
     </div>
   </div>
 </div>

cps/updater.py

@@ -264,7 +264,7 @@ class Updater(threading.Thread):
                     # log_from_thread("Delete file " + item_path)
                     os.remove(item_path)
                 except OSError:
-                    logger.debug("Could not remove: %s", item_path)
+                    log.debug("Could not remove: %s", item_path)
         shutil.rmtree(source, ignore_errors=True)
 
     def is_venv(self):

optional-requirements.txt

@@ -1,7 +1,7 @@
 # GDrive Integration
 google-api-python-client>=1.7.11,<1.8.0
-gevent>=1.2.1,<20.6.0
-greenlet>=0.4.12,<0.4.17
+gevent>20.6.0,<21.2.0
+greenlet>=0.4.17,<1.1.0
 httplib2>=0.9.2,<0.18.0
 oauth2client>=4.0.0,<4.1.4
 uritemplate>=3.0.0,<3.1.0