V3 support out of the box, identifier 3?

[srdjus]

I'm using Python 3.12 and I Installed puresnmp w/ puresnmp-crypto package. I already have V2 implementation and puresnmp is working as expected.

This is what I get when I try to run a get command on my SNMP v3 agent:

Got an exception: Namespace 'puresnmp_plugins.security' did not contain a plugin with identifier 3. Known identifiers: [0, 1, 2]. See the 'puresnmp' documentation on plugins.

I tried snmpwalk/snmpget from CLI, and it works. I am not sure if there is something else I have to configure in order to use V3? How do I include this identifier and where?

import asyncio
from puresnmp import PyWrapper, Client, V3
from puresnmp.credentials import Auth, Priv
 
credentials = V3(
    username="bootstrap",
    auth=Auth(b"temp_password", "md5"),
    priv=Priv(b"myprivphrase", "aes")
)

# Create a new client
client = PyWrapper(
    Client(
        ip="127.0.0.1",
        port=161,
        credentials=credentials
    )
)

try:
     output = await client.get("1.3.6.1.2.1.1.5.0")
     print(f"Sys name is: {output}")
except Exception as e:
     print(f"Got an exception: {e}")

UPDATE:
I solved it. I had to install typing-extensions package.

In puresnmp/plugins/pluginbase.py discover_plugins function 'puresnmp_plugins.security' module couldn't be found, ImportError was caught telling me I'm missing this package.

UPDATE 2:
Now I got like 10 new errors like
puresnmp_plugins.security.usm.EncryptionError: Unable to encrypt message (string argument without an encoding)
not sure if this is related, but I guess it has something to do with python/packages version/dependencies...

[Venkatesh416]

"Namespace 'puresnmp_plugins.mpm' did not contain a plugin with identifier 0. Known identifiers: []. See the 'puresnmp' documentation on plugins."

from puresnmp import Client, ObjectIdentifier as oid, credentials
oids = [oid('.1.3.6.1.2.1.33.1.3.3.1.3.1'),  # upsInputVoltage
                oid('.1.3.6.1.2.1.33.1.3.3.1.2.1'),  # input frequency.
                oid('.1.3.6.1.2.1.33.1.2.5.0'),  # battery voltage.
                oid('.1.3.6.1.2.1.33.1.2.7.0'),  # UPS Battery temperature
                oid('.1.3.6.1.2.1.33.1.2.4.0'),  # Battery capacity
                oid('.1.3.6.1.2.1.33.1.4.4.1.2.1'),  # upsOutputVoltage
                oid('.1.3.6.1.2.1.33.1.4.2.0'),  # output frequency
                oid('.1.3.6.1.2.1.33.1.4.4.1.5.1')  # ups load percentage
                ]

client = Client('172.16.2.101', credentials.V1("public"), port=161)
result1 = client.multiget(oids)
x = run(result1)
result = [0] * len(oids)
for j in range(len(oids)):
	xx = bytes(x[j])
	result[j] = int.from_bytes(xx[2:], byteorder="big", signed=True)

I'm having the above error after converting python file to .exe file using pyinstaller. But python program is executing through IDE" . Please suggest

[janipez]

Having the same issue here.

When building with PyInstaller I need to manually include puresnmp by adding --collect-all puresnmp option, otherwise I get an error:

Traceback (most recent call last):
  File "main.py", line 2, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 384, in exec_module
  File "puresnmp\__init__.py", line 18, in <module>
  File "puresnmp\compatibility.py", line 14, in package_version
  File "importlib\metadata.py", line 569, in version
  File "importlib\metadata.py", line 542, in distribution
  File "importlib\metadata.py", line 196, in from_name
importlib.metadata.PackageNotFoundError: puresnmp

But even if I include puresnmp manually, I get the following error when running built executable:
Namespace 'puresnmp_plugins.mpm' did not contain a plugin with identifier 3. Known identifiers: []. See the 'puresnmp' documentation on plugins.

Perhaps there's something else I'd have to include manually?