[rancid] force10 S-50 support in rancid

[Colin Corbett]

Hey folks,
first time posting so go easy. (I looked in the archives and didnt see 
this covered).

I had a devil of a time getting rancid (2.3.1) to work with the force10 
S-50 (running rev 2.3.1). (code rev is a strange co-incidence).

problems encountered:
1: when telnetting/sshing in, the S-50 may miss various bits of the enable 
password. (if its a 10 character password, some characters in the middle 
get munged.)
Ideal fix: have force10 figure this out and ensure that they do not miss 
characters when enabling (ticket opened)
Possible rancid fix: create a loop in clogin to ensure that for each 
character sent a "*" is received.

my hack was to modify clogin:
<HACK>-----Do not do this-----
         -re "$e_prompt" { send "X";sleep 1;send "X"; sleep 1;send "X"; 
sleep 1; send "X"; sleep 1; send "\r"; exp_continue}
----</HACK>
(this was truly horrible.)

2: in the rancid-force10: I added:
  next if (/^!Current Configuration\s*:/i);
(as thats how the current config starts)


3: Rancid cannot tell where the end of the config is as the force10 doesnt 
say when the end is.
Ideal fix: have force 10 delimit the end of the config
Possible rancid fix: Determine what the prompt is, and look for that as 
matching.
My hack: look for something near the end of the config and match that as 
the end.

if (/^tacacs-server host/) {


4: the S-50 expects "logout" to actually log you out (not exit).

Possible rancid fix, add this as another "if" platform compare to clogin.

My hack into clogin:

     if { [ string compare "force10" "$platform" ] } {
         send "logout\r"
     } else {
         send "quit\r"
     }


4a: There is still something missing in the above, as the S-50 may prompt 
you if there are unsaved changes:


The system has unsaved changes.
Would you like to save them now? (y/n)

(I didnt build logic in for this).

Hopefully theres a skilled perl person that can build some of this into 
the next rev, and worst case, maybe theres someone
with an S-50 that will get some value from this.

Also, I got rid of most of the commands that rancid does, as the S50 (L2) 
supports only a few of the commands:

%commands=(
         'show version'          => "ShowVersion",
         'dir nvram'     => "DirSlotN",
         'show vlan'             => "ShowVLAN",
         'show running'          => "WriteTerm"
);

note: I have no idea how my changes may affect the E series Force10 boxes, 
as I'm only trying to make this work on the S
series (I dont have any E series).  If you have both, maybe you want to 
make 2 different setups?



--C

p.s. apologies if this shows up as a double post. (I posted from the wrong 
source address the first attempt (so it might be queued).