Eng:J2J:AdminGuide

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Installation and operation guide for J2J (Jabber-to-Jabber) gateway.

Installation and configuring

Dependencies

For J2J you will need:

• Python >=2.3
• Twisted >=10.2.0 (patch http://twistedmatrix.com/trac/attachment/ticket/4771/twisted-ticket-4771.patch is needed for 10.2.0)
• PostgreSQL >=8.2
• PyGreSQL >=3.8
• PyOpenSSL >=0.6

(Note: there is experimental Mysql with mysql-python support in 1.1.8 and beyond, see Changelog.txt)

• Any Jabber-server (for example ejabberd, jabberd2 or Openfire), that supports:
  • XEP-0114: Jabber Component Protocol
  • XEP-0030: Service Discovery

Source code downloads

You need to get sources of J2J. You can do it at JRuDevels Downloads, or with help of SVN:

svn co svn://svn.jrudevels.org/j2j/trunk j2j/

Database setup

You need to setup a database to work with J2J:

Let's create a database for J2J:

• postgresql:

createdb j2j

• mysql

mysql -h localhost -u root -p -e "CREATE DATABASE j2j;"

Let's create a DB user:

• postgresql:

createuser -P j2j

A -P key means, that user is created with a password-prompt. Store it, because it will be needed for next steps. Same with yourpassword in mysql:

• mysql:

mysql -h localhost -u root -p -e "GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP ON j2j.* TO 'j2j'@'localhost' IDENTIFIED BY 'yourpassword';"

And import a database structure:

• postgresql:

psql -U j2j j2j
\i pgsql.schema

• mysql

mysql -h localhost -u root -p -e "use j2j; \. mysql.schema"

Gateway configuration

Configuration file is needed for J2J. Default search paths for it is: ./j2j.conf, ~/.j2j/j2j.conf and /etc/j2j/j2j.conf; also you can use "-c /path/j2j.conf" in main.py, see later. Let's copy example of this and edit it:

cp j2j.conf.example j2j.conf
nano -w j2j.conf

Parameters:

• Section component
  • JID - JID of gateway. For example,

JID=j2j.server.com

• • Host - IP or domain-name of your Jabber-server. For example,

Host="127.0.0.1"

• • Port - port on Jabber-server to which J2J will be connected. It must be the same as it specified in your Jabber-server's configuration.
  • Password - password on Jabber-server to which J2J will be connected.
• Section database
  • Host - IP or Domain-name of your database server. Leave it blank to use postgres' UNIX-socket.
  • Type - Type of your database server: postgres or mysql
  • User - Database username (in our example is j2j)
  • Name - Database name (in our example is j2j)
  • Password - Password for this database username.
  • Prefix - pass it as is.
• Section admins
  • List - a list of JIDs, for a notifications of new users registrations. For example,

List=vasya@server.ru,zhenya@server.com

• Section debug
  • Pass it as is. If you will get errors in J2J's work try to turn on logging in it section.

Running

Let's start the gateway:

python main.py

it should spit "Connected", see also your jabber server log.

Problems

• If you see:

Exception exceptions.AttributeError: "database instance has no attribute 'dbCursor'" in <bound method
 database.__del__ of <database.database instance at 0x85f1bec>> ignored

Check if you have installed python db access support ( i.e. python-pygresql, python-mysqldb in debian) and if it is up to date. Otherwise, is postgresql/mysql rdbms accesible with the parameters in [database] section in your j2j.conf? is it up?

• If you see :

Traceback (most recent call last):
  File "/usr/src//j2j/main.py", line 11, in ?
    import j2j
  File "/usr/src/j2j/j2j.py", line 14, in ?
    from client import Client
  File "/usr/src/j2j/client.py", line 10, in ?
    from twisted.names.error import DNSNameError
ImportError: No module named error

In debian etch twisted is too old: required twisted 8.01 is in etch+1; ubuntu 8.04 is ok too. And with FreeBSD you need also py-twistedNames, it's not installed with twisted.

• Sometimes main.py doesn't spit nothing, check your jabber server log, maybe there is an authentication password problem so recheck [component] section in j2j.conf
• In j2j.conf are declared some paths to log files, do these files exist? do they have write permissions?

Command line options

Start J2J with the --help key to get help about command-line options.