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Code to insert user into Tomcat config file

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Top Forums Shell Programming and Scripting Code to insert user into Tomcat config file
# 1  
Old 05-04-2011
Code to insert user into Tomcat config file
Hi all,

I'm sure someone out there has an 'easy' way to insert a new user into a Tomcat config file without using vi or otherwise editing the file. For the uninitiated, here is the layout of the config file:
Code:
[root@ntt2 bin]# cat /apps/tomcat/conf/tomcat-users.xml
<?xml version='1.0' encoding='utf-8'?>
<tomcat-users>
  <role rolename="manager"/>
  <role rolename="tomcat"/>
  <role rolename="admin"/>
  <role rolename="role1"/>
  <user username="z888666" password="b56e0b4ea4962283bee762525c2d490f" roles="admin"/>
  <user username="admin" password="21232f297a57a5a743894a0e4a801fc3" roles="tomcat,role1,manager,admin"/>
  <user username="z777333" password="b56e0b4ea4962283bee762525c2d490f" roles="admin"/>
</tomcat-users>

The 'password' data is a hash generated from this command:
Code:
[root@ntt2 ~]$ tomcat-passwd Welcome0
b56e0b4ea4962283bee762525c2d490f

What I'd like to be able to do is something of the form:
Code:
[root@ntt2 ~]$ tomcat-insert-user z696969 Welcome0 admin

or even:
Code:
[root@ntt2 ~]$ tomcat-insert-user z696969 b56e0b4ea4962283bee762525c2d490f admin

Or even an interactive one that allows you to enter the password etc would be fine.

Does anyone out there have a script/command sequence that will do this for me or have the smarts to whip it up?

I tried my own attempt but it was a bit of a disaster and stripped all the "'s out of the file and killed Tomcat Smilie
# 2  
Old 05-04-2011
You can use sed:
Code:
sed -i '/<\/tomcat-users>/ i\<user username="z777333" password="b56e0b4ea4962283bee762525c2d490f" roles="admin"/>' tomcat-users.xml

You need to write a small piece of Bash wrapping the code so you can use:
Code:
tomcat-insert-user z696969 b56e0b4ea4962283bee762525c2d490f admin

That is left as an exercise for you.
# 3  
Old 05-04-2011
Code:
sed '$d' infile > outfile
pword=$(tomcat-passwd $2)
echo '  <user username="'$1'" password="'$pword'" roles="'$3'" />' >> outfile
echo '</tomcat-users>' >> outfile

This User Gave Thanks to fpmurphy For This Post:
dan-e
# 4  
Old 05-04-2011
Quote:
Originally Posted by fpmurphy
Code:
sed '$d' infile > outfile
pword=$(tomcat-passwd $2)
echo '  <user username="'$1'" password="'$pword'" roles="'$3'" />' >> outfile
echo '</tomcat-users>' >> outfile

Excellent, I understand all of this code, thanks a plenty!
Last edited by dan-e; 05-04-2011 at 02:16 AM.. Reason: Question solved...
# 5  
Old 05-04-2011
if your sed support -i option, no need temp file genereated by below code.

Code:
user=$1
pword=$(tomcat-passwd $2)
roles=$3
sed -i '$ s/\(.*\)/  <user username="'$user'" password="'$pword'" roles="'$roles'" \/> \n\1/' input.txt

# 6  
Old 05-04-2011
Quote:
Originally Posted by rdcwayx
if your sed support -i option, no need temp file genereated by below code.

Code:
user=$1
pword=$(tomcat-passwd $2)
roles=$3
sed -i '$ s/\(.*\)/  <user username="'$user'" password="'$pword'" roles="'$roles'" \/> \n\1/' input.txt

I think Using the i(insert) command would be more straightforward in this case.

---------- Post updated at 01:16 AM ---------- Previous update was at 01:15 AM ----------

Code:
sed -i '$ i\<user username="'$user'" password="'$pword'" roles="'$roles'" />' input.txt

Note: For this command to work, make sure there're no blank lines at the end of the file.
Last edited by kevintse; 05-04-2011 at 03:32 AM..
# 7  
Old 05-05-2011
OK, but in your code, which part dictates it to insert within the
<tomcat-users>
...
</tomcat-users>
section?

I am also looking to improve upon this to make a script that will allow me to specify a log comment that it will insert at the end of the XML file as an XML comment using the <!- ---> tags, so I need a sed command that doesn't care about these trailing comments at the bottom...
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