Hi,
I got the point due to which problem is occurring.
Please find the code below:
if ((rc = usm_parse_security_parameters(secParams, remaining,
secEngineID, secEngineIDLen,
&boots_uint, &time_uint,
secName, secNameLen,
signature, &signature_length,
salt, &salt_length,
&data_ptr)) < 0)
After calling this function in API sequence "snmpv3_parse ---->
usm_process_in_msg'", the "secEngineID" extracted from data (received
through trap) is wrong. It gives some garbage value and incorrect length.
Due to this, the function calls ahead returns "UNKNOWNSECURITYNAME" error.
Please help in this. Is there any way to correct it or confirm the data
read.
Thanks
Gaurav
On Wed, Jul 21, 2010 at 2:14 PM, Gaurav Chaturvedi <
gauravchaturve...@gmail.com> wrote:
> Hi Dave,
>
> Now I am registering the tokens using:
>
> register_config_handler(app, "usmUser",
> usm_parse_config_usmUser, NULL, NULL);
>
> register_config_handler(app, "createUser",
>
> usm_parse_create_usmUser, NULL,
> "username [-e ENGINEID] (MD5|SHA) authpassphrase [DES
> [privpassphrase]]");
>
> and creating SNMPv3 user using:
>
> sprintf(buf,"%s -e %s","administrator","0x0102030405");
>
> strcat(buf," MD5 ");
> strcat(buf,"mypassword");
> usm_parse_create_usmUser(NULL,buf);
>
> But, still I am not able to resolve the issue of
> "SNMPERR_USM_UNKNOWNSECURITYNAME", due to which callback is not being
> called.
>
> Any help in this regard would be highly appreciated.
>
> Thanks and Regards
> Gaurav Chaturvedi
>
>
> On Tue, Jul 20, 2010 at 7:15 PM, Dave Shield
> <d.t.shi...@liverpool.ac.uk>wrote:
>
>> On 20 July 2010 14:27, Gaurav Chaturvedi <gauravchaturve...@gmail.com>
>> wrote:
>> > From this error, I think I am not able to create the user
>> > properly. Is it true?
>>
>> That's what it looks like, yes.
>>
>>
>>
>> > Using the documentation, I am using the command:
>> >
>> > snmpusm -v3 -u initial -n "" -l authNoPriv -a MD5 -A mypassword
>> localhost
>> > create administrator initial
>>
>> That will create a user within the Net-SNMP agent.
>> It will have no effect on your private application.
>>
>>
>>
>> > I have entered following enteries in ...\snmp\persist\snmpapp.conf:
>> >
>> > rwuser initial
>> > rwuser administrator
>> > createUser initial MD5 mypassword DES
>> >
>> > But the command is giving errors:
>> > c:/snmp/snmp/persist/snmpapp.conf: line 17: Warning: Unknown token:
>> rwuser.
>> > c:/snmp/snmp/persist/snmpapp.conf: line 18: Warning: Unknown token:
>> rwuser.
>> > c:/snmp/snmp/persist/snmpapp.conf: line 19: Warning: Unknown token:
>> createUser.
>>
>> Have you defined config handlers for these tokens?
>>
>> The Net-SNMP agent and trap receiver understand them,
>> because they have config handler routines for them.
>>
>> If you are trying to write your own version of snmptrapd,
>> then you need to duplicate *ALL* of the necessary functionality.
>> Including mechanisms for creating SNMPv3 users.
>>
>>
>>
>> > Please correct me where I am wrong.
>>
>> Personally I think where you are going wrong is in trying to re-write
>> an existing tool, rather than taking something that already works,
>> and extending it to meet your additional requirements.
>>
>> Dave
>>
>
>
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