Re: Sftp password auth -- MIDRANGE-L

Sorry, I don't know if you post this up on the thread: OS Version and SFTP/SSH version?

On 04/10/2018 14:05, Jay Vaughn wrote:

sleep 5 worked but did not yield any better results...

so could the remote server be configured "inappropriately"? for what I'm
trying to do?
isn't there a password and an interactive method to choose from?

which would should it be for this script?

On Thu, Oct 4, 2018 at 3:01 PM Jay Vaughn <jeffersonvaughn@xxxxxxxxx> wrote:

thanks, yes it would hang up with wait...

it tried "set timeout 10" and that executed but no success on end result...

would "sleep 5" be any better?

On Thu, Oct 4, 2018 at 2:56 PM Jack Woehr <jwoehr@xxxxxxxxxxxxxxxxxxxxxxxx>
wrote:

Aggh, I mean "sleep"

Try "sleep 5"

"wait" is at the end of a process that becomes interactive to wait for it
to end.

On Thu, Oct 4, 2018 at 12:51 PM, Jay Vaughn <jeffersonvaughn@xxxxxxxxx>
wrote:

ok, so i embedded a wait into the script.. does this look correct?

#!/usr/local/bin/expect -f
spawn sftp -vvv -o PreferredAuthentications=password -oport=22 $env(...
expect "password:"
wait 10
send "$env(SSH_PASS) \n"
expect "sftp>"
...

On Thu, Oct 4, 2018 at 2:50 PM Jack Woehr <

jwoehr@xxxxxxxxxxxxxxxxxxxxxxxx

wrote:

SSH/SFTP attempts terminal control across the connection for

interactive

password sessions. QP2TERM is a PASE *terminal*. *Qua* terminal, it

gives

SSH fits.

On Thu, Oct 4, 2018 at 12:39 PM, Jay Vaughn <

jeffersonvaughn@xxxxxxxxx>

wrote:

qp2term is PASE and i am not spawning when I attempt interactively

On Thu, Oct 4, 2018 at 2:36 PM Kevin Bucknum <

Kevin@xxxxxxxxxxxxxxxxxxx>

wrote:

And you shouldn't be spawning the process. That is part of the

expect

process. Just sftp. That may be your prompt issue right there.

________________________________
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxx> on behalf of

Jack

Woehr <jwoehr@xxxxxxxxxxxxxxxxxxxxxxxx>
Sent: Thursday, October 4, 2018 1:31 PM
To: Midrange Systems Technical Discussion
Subject: Re: Sftp password auth

There's terminal control issues with QP2TERM as I mentioned

before.

You should abandon QP2TERM and ssh into your PASE session.

Here's Don Libes (author of expect) writing about autoexpect

http://usenix.org/publications/library/proceedings/lisa96/full_

papers/libes/libes.ps

On Thu, Oct 4, 2018 at 12:26 PM, Jay Vaughn <

jeffersonvaughn@xxxxxxxxx

wrote:

when i go into qp2term and spawn the sftp request I do not get

any

prompts...??

On Thu, Oct 4, 2018 at 2:24 PM Kevin Bucknum <

Kevin@xxxxxxxxxxxxxxxxxxx>

wrote:

Without being able to run an interactive session, I really

think

you

are

playing pin the tail on the donkey. I think we just have one

script

that

we

share between two different servers. All the rest of the

servers

have

their

own scripts because the prompts are different. This one sends

password:

when it wants the password and sftp> when it wants a command.

Looking

at

another one it appears that it sends login -> when it wants

the

password

and the command prompt is just a $. I've never used autoexpect

that

Jack

is

suggesting, but I've always basically done the same thing. Get

to a

command

line and run the sftp session interactively and write down the

prompts.

Then use those to create my expect sessions.

________________________________
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxx> on behalf

of

Jay

Vaughn <jeffersonvaughn@xxxxxxxxx>
Sent: Thursday, October 4, 2018 1:07 PM
To: Midrange Systems Technical Discussion
Subject: Re: Sftp password auth

thanks kevin,

it is not working with 2 out of 2 non-iseries servers I'm

testing

against...
but works with an internal iSeries sftp server...

the outside company provided logs but did not tell me nothing.
the internal network guys said that each time i'd attempt

connection

wtih

the internal sftp server I"d get blacklisted... they fix and

I'd

retry

and

it would blacklist me.

I'll try your script...

On Thu, Oct 4, 2018 at 2:03 PM Kevin Bucknum <

Kevin@xxxxxxxxxxxxxxxxxxx>

wrote:

None of my expect scripts are used to connect to iseries

boxes.

All

are

to

windows or linux boxes. Your issue is with this particular

server.

If

you

can't get server operator to help you by looking at the

logs on

their

side,

then it is hard to tell you what is wrong.

This script runs many times a day and works fine.
#!/usr/local/bin/expect -f
spawn sftp -oPort=9002 xxxx@a.b.c.d
expect "password:"
send "pass\n"
expect "sftp>"
send "cd current\n"
expect "sftp>"
send "mget *\n"
expect "sftp>"
send "quit\n"

________________________________
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxx> on

behalf

of

Jay

Vaughn <jeffersonvaughn@xxxxxxxxx>
Sent: Thursday, October 4, 2018 12:49 PM
To: Midrange Systems Technical Discussion
Subject: Re: Sftp password auth

the conclusion i arrived at as well...

Jack do you see anything wrong with this script?
If not, and nobody can produce a simple script the use to

connect

to

a

non-iseries sftp server, I'm going to conclude nobody knows

how

or

it

can't

be done.
(good talent on this list is what I'm trying to say :))

#!/usr/local/bin/expect -f
set timeout 20
spawn sftp -vvv -o PreferredAuthentications=password

-oport=22

$env(SSH_USER)@10.175.96.213
expect {
default {exit 2}
"continue connecting (yes/no)?" {send "yes\n";

exp_continue}

"assword:" {send "$env(SSH_PASS) \n"; exp_continue}
"sftp>"
}
expect {
default {exit 2}
"not found" {exit 3}
"sftp>"
}
send "quit\n"
exit 0

On Thu, Oct 4, 2018 at 1:43 PM Jack Woehr <

jwoehr@xxxxxxxxxxxxxxxxxxxxxxxx

wrote:

no terminal control from inside qp2term

On Thu, Oct 4, 2018 at 11:39 AM, Jay Vaughn <

jeffersonvaughn@xxxxxxxxx

wrote:

Kevin, no... if I do the following steps, I never get

prompted

for

a

password...

1.) call qp2term
2.) sftp -vvv -o PreferredAuthentications=password

-oport=22

qaISGNsftp@xxxxxxxxxxxxxxx

shouldn't I be getting a prompt for password?

Jay

On Thu, Oct 4, 2018 at 1:17 PM Kevin Adler <

kadler@xxxxxxxxxx>

wrote:

Your log seems to have clipped anything after a

comma.

eg.

this

line

debug2: we sent a password packet

should read

debug2: we sent a password packet, wait for a reply

I'm not sure whether the missing data is necessary,

but

it

would

be

nice

to have.

In any event, based on what is in the log it would

appear

that

after

sending a password packet your remote server is not

replying

but

instead

just closing the connection. That seems odd to me.

The

server's

log

might
shed some light on the problem, but of course you

don't

have

access

to

that. You may have to contact the system owner and

see

if

they

can

figure
it out.

Can you connect to the server normally? It's just

the

expect

script

which
fails?
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