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Bash Script Help
I want to automate the creation of new OpenVPN keys and I have a script for doing that. However, when I get to the point in the script where I call the "./build-key someuser" part to create the user's keys, I have to walk through answering all the questions (with a default return key) and then at the end having to hit the 'y' key followed by return twice. Is there anyway to bypass this step and just have it create the keys?
I've tried the following (and multiple variations on this) with no success:
echo -e "\n\n\n\n\n\n\n\n\ny\ny\n" | ./build-key someuser
Comments
Seems a one liner would be the key. Off the top of my head I've got only theory I don't really mess with this process much but surely you can send the variables as flags to the application using a one liner.
use the yes command ?
Interesting idea, but unfortunately it doesn't work:
yes | ./build-key someuser
just returns an endless scrolling of:
Country Name (2 letter code) [US]:string is too short, it needs to be at least 2 bytes long
I would have thought that it would have worked as I would have assumed that it would just have taken the default [US]...but alas no.
yes US | ./build-key someuser
wonder if you could build it in to a while loop with an answers file.
Interesting problem I have never had to over come, I don't have time right now but will have a look in the morning if no solution is posted already.
Quick search suggests: echo "Y Y N N Y N Y Y N" | ./your_script
Or use expect
Ant.
It looks a lot like GPG's prompts. They have a batch mode option on that side.... so googling came up with this...
http://highsecurity.blogspot.ca/2009/09/openvpn-easyrsa-batch-em.html
I haven't tried it, but looks like it might do what you want.
Just so you are on the same page, here is actual output of what comes up (10 returns followed by 2 'y' then return:
`== Starting to build client keys ==
NOTE: If you run ./clean-all, I will be doing a rm -rf on /etc/openvpn/easy-rsa/2.0/keys
Generating a 1024 bit RSA private key
......++++++
......................................................................++++++
writing new private key to '.deleteme.key'
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
Country Name (2 letter code) [US]:
State or Province Name (full name) [CO]:
Locality Name (eg, city) [Denver]:
Organization Name (eg, company) [myworld.net]:
Organizational Unit Name (eg, section) [myworld.net]:
Common Name (eg, your name or your server's hostname) [deleteme]:
Name [myworld.net]:
Email Address [[email protected]]:
Please enter the following 'extra' attributes to be sent with your certificate request
A challenge password []:
An optional company name []:
Using configuration from /etc/openvpn/easy-rsa/2.0/openssl-0.9.8.cnf
Check that the request matches the signature
Signature ok
The Subject's Distinguished Name is as follows
countryName :PRINTABLE:'US'
stateOrProvinceName :PRINTABLE:'CO'
localityName :PRINTABLE:'Denver'
organizationName :PRINTABLE:'myworld.net'
organizationalUnitName:PRINTABLE:'myworld.net'
commonName :PRINTABLE:'deleteme'
name :PRINTABLE:'myworld.net'
emailAddress :IA5STRING:'[email protected]'
Certificate is to be certified until Nov 24 22:54:42 2023 GMT (3650 days)
Sign the certificate? [y/n]:y
1 out of 1 certificate requests certified, commit? [y/n]y
Write out database with 1 new entries`
Has anyone actually done this before or are all you guys above just guessing? @tchen came the closest - you want to add
-batch
onto the end of theopenssl req
line in thebuild_key
script, and check/etc/openvpn/easy-rsa/2.0/openssl-0.9.8.cnf
has all the$variable = optional
lines already filled in.OK...I tried this. I edited all the variables in the openssl-0.9.8.cnf file and then opened up the build-key script. However, the contents are not the openssl that you quoted but instead this:
I swapped out --interact with --batch and here is what I came up with when I run ./build-key deleteme2:
The generated files are all fine with the exception of deleteme2.crt which instead of the normal 5K size is 0K.
Closer...
Weird... my build-key script looks like the one listed here.
Maybe an error in the openssl-0.9.8.cnf?
Finally figured it out mostly thanks to @SegmentationFault's leading.
Because the recent versions of OpenVPN do not come with EasyRSA installed anymore, you need to download a copy off of the GitHub website here for version 2:
https://github.com/OpenVPN/easy-rsa/tree/release/2.x
In the easy-rsa/2.0 folder, edit the build-key file to swapped out --interact with --batch
Then the only other thing that needs to be done is to edit the vars file to put in your default values:
That's it...