Rare project developers

[David Schmitz <>]

Hi,

I maybe found the culprit, 
why
ncclient is now throwing the exception

MainProcess[1631064] 2023-02-17 12:01:48,117 utils.proxy ERROR: proxy::fetch_xml(): 
got exception StartTag: invalid element name, line 2, column 37513 (<string>, 
line 2)
(the column number 37513 is probably dependent on my actual configuration
and the actual contents returned in the response)

on parsing response of get-config query.

Here is the section of the response
(just reformatted for indentation):

...
      <router>
        <uni2flow4>
          <1>
            <no>
              <description></description>
            </no>
            <no>
              
<identifier-value>identifier-escapeupgrade-cli</identifier-value>
            </no>
            <vrf>
              <v1></v1>
            </vrf>
            <distance>
              <identifier-value>identifier-escape10</identifier-value>
            </distance>
            <direction>
              <target></target>
            </direction>
            <as>
              <identifier-value>identifier-escape0</identifier-value>
            </as>
            <rate>
              <identifier-value>identifier-escape0</identifier-value>
            </rate>
            <justadvert>
              <loopback1></loopback1>
            </justadvert>
            <no>
              <automesh></automesh>
            </no>
          </1>
        </uni2flow4>
...

It is the <1> ... </1> tag.
I think, number are not allowed at the beginning of XML tag names.
(<uni2flow6> tags following in the response may have the same issue).

In my current stub config regarding uni2flow4, I have
...
router uni2flow4 1
 vrf v1
 distance 10
 justadvert loopback1
 exit
!
router uni2flow6 1
 vrf v1
 distance 10
 justadvert loopback1
 exit
!
...

Trying to change the "1"-s to a string starting with a letter, e.g., "u41" 
fails,
as this parameter obviously is supposed to be a number:

...
info cfgInit.executeSWcommands:cfgInit.java:764 line 75: "router uni2flow4 u1" : % bad process number 
...

I have no idea what is the best way to resolve this,
i.e., what to use instead as a mean to encode the uni2flow4 router process 
number
in an XML-compatible way.
Maybe "int_1", "int_2", ... ? 
Of course this should apply to all numbers which might appear in the config returned as tags.
And I have no idea whether such encoding with prepending a fixed letter 
prefix,
like "int_", for some occasions might lead to an ambiguity with
an potentially used actual string id "int_...".
In the case of router process number is probably not a problem, as these
are all supposed to be numbers and never arbitrary strings?


Best Regards
David

On Wed, 15 Feb 2023, David Schmitz wrote:

> Date: Wed, 15 Feb 2023 15:15:14 +0100 (CET)
> From: David Schmitz <>
> Reply-To: 
> To: mc36 <>
> Cc: 
> Subject: Re: [rare-dev] netconf
>
> Hi,
>
> ok, we are progressing.
>
> > mc36@fod:~/FOD$ sudo docker run -ti --security-opt apparmor=unconfined 
> > netconfget1 bash
> You just need to run the "docker build ..." command
> before the "docker run ..." command.
>
> Now after docker + apparmor is working, it should be no problem any more.
> Sorry, for having to go through all that mess.
>
>
> docker.io may be interesting too, but I have no experience with it at all.
>
> Best Regards
> David
>
> On Wed, 15 Feb 2023, mc36 wrote:
>
> > Date: Wed, 15 Feb 2023 15:00:23 +0100
> > From: mc36 <>
> > To: David Schmitz <>
> > Cc: 
> > Subject: Re: [rare-dev] netconf
> >
> > hi,
> >
> > On 2/15/23 12:32, David Schmitz wrote:
> > > I do not know the details of this tasksel command and the stuff behind it.
> > so this is what the text installer starts to install debian system, at 
> > least the same tui is what i get...
> >
> > > But, if it basically a wrapper around debian package system,
> > > you may try "apt-get install apt-file"
> >
> > it was that, thanks.... seemingly i have to create an account on docker.io?
> >
> > thanks,
> > cs
> >
> >
> >
> > mc36@fod:~/FOD$ sudo apt-file search apparmor_parser
> > apparmor: /sbin/apparmor_parser
> > apparmor: /usr/share/man/man8/apparmor_parser.8.gz
> > mc36@fod:~/FOD$
> > mc36@fod:~/FOD$ sudo apt-get install apparmor
> > Reading package lists... Done
> > Building dependency tree... Done
> > Reading state information... Done
> > Suggested packages:
> >  apparmor-profiles-extra apparmor-utils
> > The following NEW packages will be installed:
> >  apparmor
> > 0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
> > Need to get 640 kB of archives.
> > After this operation, 2,615 kB of additional disk space will be used.
> > Get:1 http://ftp.at.debian.org/debian stable/main amd64 apparmor amd64 
> > 2.13.6-10 [640 kB]
> > Fetched 640 kB in 0s (8,423 kB/s)
> > Preconfiguring packages ...
> > Selecting previously unselected package apparmor.
> > (Reading database ... 39512 files and directories currently installed.)
> > Preparing to unpack .../apparmor_2.13.6-10_amd64.deb ...
> > Unpacking apparmor (2.13.6-10) ...
> > Setting up apparmor (2.13.6-10) ...
> > Reloading AppArmor profiles
> > Processing triggers for man-db (2.9.4-2) ...
> > Scanning processes...
> > Scanning linux images...
> >
> > Running kernel seems to be up-to-date.
> >
> > No services need to be restarted.
> >
> > No containers need to be restarted.
> >
> > No user sessions are running outdated binaries.
> > mc36@fod:~/FOD$
> > mc36@fod:~/FOD$
> > mc36@fod:~/FOD$
> > mc36@fod:~/FOD$ sudo docker run -ti --security-opt apparmor=unconfined 
> > netconfget1 bash
> > Unable to find image 'netconfget1:latest' locally
> > docker: Error response from daemon: pull access denied for netconfget1, 
> > repository does not exist or may require 'docker login': denied: requested 
> > access to the resource is denied.
> > See 'docker run --help'.
> > mc36@fod:~/FOD$
> > mc36@fod:~/FOD$
> > mc36@fod:~/FOD$
> > mc36@fod:~/FOD$
> > mc36@fod:~/FOD$
> > mc36@fod:~/FOD$ sudo docker login
> > Login with your Docker ID to push and pull images from Docker Hub. If you 
> > don't have a Docker ID, head over to https://hub.docker.com to create one.
> > Username: mc36
> > Password:
> > Error response from daemon: Get "https://registry-1.docker.io/v2/": 
> > unauthorized: incorrect username or password
> > mc36@fod:~/FOD$
> > mc36@fod:~/FOD$
> > mc36@fod:~/FOD$

--

David Schmitz

Boltzmannstrasse 1, 85748 Garching
Telefon:   +49 89 35831-8765
Leibniz-Rechenzentrum, Germany
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