From miked at dewhirst.com.au  Thu May 12 19:24:28 2022
From: miked at dewhirst.com.au (Mike Dewhirst)
Date: Fri, 13 May 2022 09:24:28 +1000
Subject: [melbourne-pug] Windows registry PermissionError
Message-ID: <fd48edfb-8b0e-28b9-6aa1-1a2e35c16981@dewhirst.com.au>

I'm trying to copy a value from HKLM to HKCU for application rollout via 
bulk installation by an administrator but individual Windows user 
authentication. The installer can write to HKLM but the user needs to 
see the value in HKCU

Any hints appreciated.

Thanks

Mike

Getting this ...

Traceback (most recent call last):
 ? File "D:\Users\mike\envs\chemdata\registry\wreg\wreg.py", line 84, in 
<module>
 ??? curegistry.setvalue('Country', anz)
 ? File "D:\Users\mike\envs\chemdata\registry\wreg\wreg.py", line 51, in 
setvalue
 ??? return wr.SetValueEx(self.select(), vname, 0, 1, value)
PermissionError: [WinError 5] Access is denied

from ...

import winreg as wr


class Registry:

     def __init__(self, computer=None, hkey=None, sub_key=None):
         # computer is None means this computer
         self.computer = computer
         self.key = hkey
         self.sub_key = sub_key

     def connect(self):
         return wr.ConnectRegistry(self.computer, self.key)

     def select(self):
	# also tried OpenKeyEx()
         return wr.OpenKey(
             key=self.key,
             sub_key=self.sub_key,
             access=wr.KEY_ALL_ACCESS + wr.KEY_WRITE,
         )

     def query(self, vname):
         return wr.QueryValueEx(self.select(), vname)

     def setvalue(self, vname, value):
         return wr.SetValueEx(self.select(), vname, 0, 1, value)

if __name__ == "__main__":

     lmregistry = Registry(
         hkey=wr.HKEY_LOCAL_MACHINE,
         sub_key="SOFTWARE\WOW6432Node\XXX Technology\AppName",
     )
     print(f"\n{lmregistry.sub_key}")
     anz = lmregistry.query('Country')[0]
     print(f"\n{anz}")	# works fine

     curegistry = Registry(
         hkey=wr.HKEY_CURRENT_USER,
         sub_key="SOFTWARE\XXX Technology\AppName",
     )
     curegistry.setvalue('Country', anz)  <<<<< BOOM <<<<<
     anz = curegistry.query('Country')[0]
     


  



-- 
Signed email is an absolute defence against phishing. This email has
been signed with my private key. If you import my public key you can
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From b.obrien at me.com  Fri May 13 03:56:46 2022
From: b.obrien at me.com (Brendan O'Brien)
Date: Fri, 13 May 2022 17:56:46 +1000
Subject: [melbourne-pug] Slack?
Message-ID: <FC83B9C0-92BB-4B4D-A8FE-7B92E4E2535A@me.com>

Hey everyone:

I?m wondering whether anyone uses or is aware of public python and/or data science slack channels?  

I find myself a bit on my own in the python world where I?m working right now and would appreciate having colleagues with python experience to query when I get stuck. This listserv works ok, but I think a free Slack channel would possibly see more activity and faster turnaround.

I did find this global version: https://pyslackers.com/web <https://pyslackers.com/web> which I?ve joined and am monitoring to see whether it?s worthwhile.  Anyone else have experience with this or another Slack account?


Cheers,


Brendan

_____________________________
Brendan J. O?Brien PhD
Melbourne | Australia
b.obrien at me.com <mailto:b.obrien at me.com>
+61 433 325 679
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From miked at dewhirst.com.au  Fri May 13 04:11:55 2022
From: miked at dewhirst.com.au (Mike Dewhirst)
Date: Fri, 13 May 2022 18:11:55 +1000
Subject: [melbourne-pug] [Solved] Re: Windows registry PermissionError
In-Reply-To: <fd48edfb-8b0e-28b9-6aa1-1a2e35c16981@dewhirst.com.au>
References: <fd48edfb-8b0e-28b9-6aa1-1a2e35c16981@dewhirst.com.au>
Message-ID: <9365947f-8892-62c6-bdb3-51cffb919181@dewhirst.com.au>

Eryk Sun from python-list at python.org answered my question with some 
seriously detailed knowledge.

If you are interested in Windows registry manipulation it would be worth 
chasing the thread in their archive.

Here is the finished working (de-identified) code

import winreg as wr


class Registry:

     def __init__(self, hkey=None, sub_key=None):
         """
         hkey must be one of:
             HKEY_LOCAL_MACHINE
             HKEY_USERS
                 HKEY_CURRENT_USER
             HKEY_PERFORMANCE_DATA
         sub_key is the string location of the registry value

         """
         self.computer = None    # None means not a remote Registry
         self.key = hkey
         self.sub_key = sub_key

     def connect(self):
         # First parameter None means this computer
         return wr.ConnectRegistry(None, self.key)

     def select(self, access):
         """ Returns the open handle for the selected key with guaranteed close() """
         with self.connect() as hkey:
             return wr.OpenKeyEx(key=hkey, sub_key=self.sub_key, access=access)

     def count(self):
         """
         Returns a 3-tuple of ints (No. of sub_keys, No. of values, last modified)
         """
         access = wr.KEY_QUERY_VALUE
         with self.select(access=access) as hkey:
             return wr.QueryInfoKey(hkey)

     def query(self, vname, access=None):
         """ Returns a 2-tuple of (value, registrytype) """
         if access is None:
             access = wr.KEY_READ | wr.KEY_WOW64_32KEY
         with self.select(access=access) as hkey:
             return wr.QueryValueEx(hkey, vname)

     def setvalue(self, vname, value, access=None):
         """ Stores data in the value field of an open registry key."""
         if access is None:
             access = wr.KEY_SET_VALUE
         with self.select(access=access) as hkey:
             return wr.SetValueEx(hkey, vname, 0, wr.REG_SZ, value)


if __name__ == "__main__":
     """ Read HKLM values and if they exist, write to HKCU. """

     sub_key = r"SOFTWARE\XXX Technology\AppName"

     # get an open registry handle on the HKLM key/sub_key
     lmregistry = Registry(hkey=wr.HKEY_LOCAL_MACHINE, sub_key=sub_key)

     # read HKLM reference entries established via the Chemdata install kit
     try:
         # abandon and quit if not found
         anz = lmregistry.query('Country')[0]
         db = lmregistry.query('Database')[0]
         devref = lmregistry.query('v135')[0]
         orgid = lmregistry.query('v136')[0]
     except FileNotFoundError:
         print("Invalid label. Value not found.")
         quit()

     # get an open registry handle on the HKCU key/sub_key
     curegistry = Registry(hkey=wr.HKEY_CURRENT_USER, sub_key=sub_key)

     # write HKCU entries for Chemdata online authentication
     try:
         # abandon and quit on PermissionError exception
         curegistry.setvalue('Country', anz)
         curegistry.setvalue('Database', db)
         curegistry.setvalue('v135', devref)
         curegistry.setvalue('v136', orgid)
     except PermissionError as err:
         print(f"Permission error. {err}.")
         quit()

     # display HKCU written entries for testing
     print(f"\nHKCU\{curegistry.sub_key}")
     # only interested in the first element of each returned tuple
     anz = curegistry.query('Country')[0]
     print(f"\nCountry = {anz}")
     db = curegistry.query('Database')[0]
     print(f"\nDatabase version = {db}")
     devref = curegistry.query('v135')[0]
     print(f"\nDevice Reference = {devref}")
     orgid = curegistry.query('v136')[0]
     print(f"\nOrganisation ID = {orgid}")


  


On 13/05/2022 9:24 am, Mike Dewhirst wrote:
> I'm trying to copy a value from HKLM to HKCU for application rollout 
> via bulk installation by an administrator but individual Windows user 
> authentication. The installer can write to HKLM but the user needs to 
> see the value in HKCU
>
> Any hints appreciated.
>
> Thanks
>
> Mike
>
> Getting this ...
>
> Traceback (most recent call last):
> ? File "D:\Users\mike\envs\chemdata\registry\wreg\wreg.py", line 84, 
> in <module>
> ??? curegistry.setvalue('Country', anz)
> ? File "D:\Users\mike\envs\chemdata\registry\wreg\wreg.py", line 51, 
> in setvalue
> ??? return wr.SetValueEx(self.select(), vname, 0, 1, value)
> PermissionError: [WinError 5] Access is denied
>
> from ...
>
> import winreg as wr
>
>
> class Registry:
>
>      def __init__(self, computer=None, hkey=None, sub_key=None):
>          # computer is None means this computer
>          self.computer = computer
>          self.key = hkey
>          self.sub_key = sub_key
>
>      def connect(self):
>          return wr.ConnectRegistry(self.computer, self.key)
>
>      def select(self):
> 	# also tried OpenKeyEx()
>          return wr.OpenKey(
>              key=self.key,
>              sub_key=self.sub_key,
>              access=wr.KEY_ALL_ACCESS + wr.KEY_WRITE,
>          )
>
>      def query(self, vname):
>          return wr.QueryValueEx(self.select(), vname)
>
>      def setvalue(self, vname, value):
>          return wr.SetValueEx(self.select(), vname, 0, 1, value)
>
> if __name__ == "__main__":
>
>      lmregistry = Registry(
>          hkey=wr.HKEY_LOCAL_MACHINE,
>          sub_key="SOFTWARE\WOW6432Node\XXX Technology\AppName",
>      )
>      print(f"\n{lmregistry.sub_key}")
>      anz = lmregistry.query('Country')[0]
>      print(f"\n{anz}")	# works fine
>
>      curegistry = Registry(
>          hkey=wr.HKEY_CURRENT_USER,
>          sub_key="SOFTWARE\XXX Technology\AppName",
>      )
>      curegistry.setvalue('Country', anz)  <<<<< BOOM <<<<<
>      anz = curegistry.query('Country')[0]
>      
>
>
>   
>
>
> -- 
> Signed email is an absolute defence against phishing. This email has
> been signed with my private key. If you import my public key you can
> automatically decrypt my signature and be sure it came from me. Just
> ask and I'll send it to you. Your email software can handle signing.


-- 
Signed email is an absolute defence against phishing. This email has
been signed with my private key. If you import my public key you can
automatically decrypt my signature and be sure it came from me. Just
ask and I'll send it to you. Your email software can handle signing.

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From hartror at gmail.com  Fri May 13 17:31:39 2022
From: hartror at gmail.com (Rory Hart)
Date: Sat, 14 May 2022 07:31:39 +1000
Subject: [melbourne-pug] Slack?
In-Reply-To: <FC83B9C0-92BB-4B4D-A8FE-7B92E4E2535A@me.com>
References: <FC83B9C0-92BB-4B4D-A8FE-7B92E4E2535A@me.com>
Message-ID: <CADf+qJeeoxCDm6wuG6_iXQBH6F3V5g7=vg+ZV5_2=7jhCez53Q@mail.gmail.com>

Hi Brendan

The Python discord is large, active with a broad user base across the
programming & data science spectrum.

https://discord.gg/python

Thanks

On Fri, 13 May 2022 at 17:57, Brendan O'Brien via melbourne-pug <
melbourne-pug at python.org> wrote:

> Hey everyone:
>
> I?m wondering whether anyone uses or is aware of public python and/or data
> science slack channels?
>
> I find myself a bit on my own in the python world where I?m working right
> now and would appreciate having colleagues with python experience to query
> when I get stuck. This listserv works ok, but I think a free Slack channel
> would possibly see more activity and faster turnaround.
>
> I did find this global version: https://pyslackers.com/web which I?ve
> joined and am monitoring to see whether it?s worthwhile.  Anyone else have
> experience with this or another Slack account?
>
>
> Cheers,
>
>
> Brendan
>
> _____________________________
> Brendan J. O?Brien PhD
> Melbourne | Australia
> b.obrien at me.com
> +61 433 325 679
> _______________________________________________
> melbourne-pug mailing list
> melbourne-pug at python.org
> https://mail.python.org/mailman/listinfo/melbourne-pug
>
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