119 Labs

It turns out installing plugins, and particularly the openid plugin, on a shared dreamhost environment is arduous at best. �After a bit of work and research I managed to get it to work so here you go:

I. Perform a one-click install of trac from the web panel

if you don’t know how to do this you shouldn’t even try to proceed.

II. Setup a virtual python environment

Having a shared account with no sudo access you need to setup a local python environment to do all of the building. I found a reference here on how to do that. Here are the steps

cd ~

wget�virtual-python.py

python virtual-python.py

wget http://peak.telecommunity.com/dist/ez_setup.py

bin/python ez_setup.py

export PYTHONPATH=~/lib/python2.4/:~/lib/python2.4/site-packages/

III. Build the plugin

mkdir install_dir

cd install_dir

 

hg clone http://bitbucket.org/Dalius/authopenid-plugin/

cd authopenid-plugin

python setup.py install –prefix=$HOME

cp ~/lib/python2.4/site-packages/*.egg <your_trac>/plugins

For more info see this article.

IV. Configure openid

edit <your_trac>/conf/trac.ini

add the following lines:

 

[components]
trac.web.auth.* = disabled
authopenid.* = enabled

see the above article for more config options.

V. Install Element Tree

As of this writing, element tree was not installed in the dream host system python cache. �In order to get around this do the following:

cd ~/install_dir

wget�http://effbot.org/media/downloads/elementtree-1.2.6-20050316.tar.gz

tar xzvf�elementtree-1.2.6-20050316.tar.gz

cd�elementtree-1.2.6-20050316

setup.py install

In order to get our trac instance to pick up this library, we need to package it as an egg

edit its setup.py

change

from distutils.core import setup, Extension

to:

from setuptools import setup, Extension

then run

python setup.py bdist_egg

cp dist/*.egg <your_trac>/plugins

you now have all of the files installed you need to run openid on trac

VI. Creating the plugin schema

If you go to you project home page and you see the message:

TracError: The Trac Environment needs to be upgraded.

Then like me you need to initialize the SQL tables used by the python-openid plugin. If that is the case then do the following:

cd <your_trac>/db

sqlite3 trac.db

CREATE TABLE oid_nonces(server_url VARCHAR);

<hit enter>

CREATE TABLE oid_associations(server_url VARCHAR(2047),handle VARCHAR(255),secret BLOB(128),issued INTEGER,lifetime INTEGER,assoc_type VARCHAR(64),PRIMARY KEY (server_url, handle));

<hit enter>

.exit

See the�source code for more info. Now we need to “upgrade” the schema

cd ~/install-dir

wget http://openidenabled.com/files/python-openid/packages/python-openid-2.2.4.tar.gz

tar xzvf python-openid-2.2.4.tar.gz

cd �python-openid-2.2.4

cd �contrib

./upgrade-store-1.1-to-2.0 –sqlite=<your_trac>/db/trac.db

on the above line you must use the absolute path to your trac instance. No using ~ as a home dir shortcut.

This should run successfully.If the output of that command is �”no such table oid…” Then something was messed up with using sqllite. Go back in and use the command .tables and make sure the two tables are there. If not, re-run the create table commands and look for error messages.

DONE! You should now be able to log in to your trac instance.

VII. Setting OpenId permissions in trac

Setup your account with permissions.ant more? log in and check trac.log

edit <your_trac>/conf/trac.ini

change the logging section so it looks like this:

[logging]

log_file = trac.log

log_level = DEBUG

log_type = file

save and exit. Now:

tail -n 200 -F <your_trac>/log/trac.log

Next log in to your trac instance (using a web browser) using a openid account.

You’ll see something like�Retrieving session for ID u’http://xxxxxxxxxxxxxxxxxxxxxxxxx’

Everything between the single quotes is your account name. Now we can use trac-admin to give our openid account some permissions:

trac-admin <trac_instance>

permission add <account_name> <PERMISSION>

where permission is something �like TRAC_ADMIN. �Use the command permission list to see currently assigned permissions

VIII. Cleanup

One thing I dislike about the one click install is it messes up the logo area. �Here’s a simple fix

edit <your_trac>/.htaccess

after the line

RewriteCond $1 !^htdocs(.*).png$

add the line

RewriteCond $1 !^chrome(.*).png$

save and the logo should now show up.

Good luck. let me know if you run into other stumbling blocks and I’ll update the instructions.

Tags: dreamhost, openid, trac

This entry was posted on Friday, January 22nd, 2010 at 8:20 pm and is filed under System. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.