Binary Expressions

Well this upgrade went very smooth with no problems at all. It really only took 3 steps to upgrade WordPress from v2.05 to v2.3. I had to upgrade two plugins and I deleted all the obsolete plugins to keep things clean. I admit a fresh install might have been better but didn’t want the hassle of putting the pieces back together.

Akismet plugin didn’t require any upgrade.

Upgraded WP Plugins (installed fresh)

• WordPress Database Backup
• WP-phpMyAdmin

Removed WP Plugins

• WordPress Database Backup (upgrade required)
• WP-Cron (obsolete)
• WP-Cron-Mail (obsolete)
• WP-Cron Dashboard (obsolete)
• WP-Cron Future Pings (obsolete)
• WP-Cron Gravatar Cache (obsolete)
• WP-Cron Moderation (obsolete)
• WP-Cron Reminder (obsolete)
• WP-Cron UpdateLinks (obsolete)
• WP-phpMyAdmin (upgrade required)

Source: Upgradding Wordpress

I recently upgraded an install of PHP Free Chat to that latest version of 1.0 Final. However it was still lacking a feature to notify individual(s) that someone has joined the chat if they were not already in the chat application to begin with. I came across a posting explaining how to achieve this in PHP Free Chat at PHP Free Chat Forum. After a little reading and discussion I was able to implement the feature.

Here’s my modified version for the solution based on the forum posting. The pfcmail() function can be made to be way more versatile for any use, however for my use it was made to be simple and produce properly formated email messages.

Solution

1. Create a new PHP file called pfcmail.php with the following lines of code.

2. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

   < ?php function pfcmail($szChannel,$szNickname) { $szCurrentDateTime = date('F j, Y @ g:i:sa', time()); $szClientIP = getenv("REMOTE_ADDR"); $szHostName = gethostbyaddr("$szClientIP"); $szServerName = getenv("SERVER_NAME"); $szEmailWebmaster = getenv("SERVER_ADMIN");   $szEmailTo = "Webmaster <$szEmailWebmaster>"; $szMsgHeaders = "From: $szEmailWebmaster\r\n"; $szMsgHeaders .= "X-Mailer: PHP\r\n"; $szMsgHeaders .= "MIME-Version: 1.0\r\n"; $szMsgHeaders .= "Content-type: text/plain; charset=UTF-8"; $szMsgSubject = "[WEB] Chat Login - $szNickname in channel $szChannel at $szCurrentDateTime";   $szMsgBody = "Date\t\t\t\t: $szCurrentDateTime\n"; $szMsgBody .= "Server Name\t\t\t: $szServerName\n"; $szMsgBody .= "Client IP\t\t\t: $szClientIP\n"; $szMsgBody .= "Client Hostname\t\t: $szHostName\n\n";   $szMsgBody .= "Join chat now by going to http://$szServerName/chat/index.php.\n\n";   $szMsgBody .= "---\n"; $szMsgBody .= "Email message auto-generated by PHP mail().";   $nSendEmail = mail($szEmailTo, $szMsgSubject, $szMsgBody, $szMsgHeaders); } ?>

   Note: The extra r, n and t’s should have a \ character before them to produce a carriage return, new line and tab. WordPress appears to remove the character.

3. Make sure to modifiy the code in pfcmail.php for the To, from, subject and body of the email message to your requirements.
4. Save pfcmail.php file into the following path, /src/commands/.
5. Edit /src/commands/nick.class.php at line number 84, just before “return true;” add the following code and save.

6. require_once(dirname(__FILE__).”/pfcmail.php”);
   pfcmail($c->title, $newnick);

You should now be receiving email notifications each time an individual joins chat.

php:-) Closer to Java/C++/Perl Style of Programming
asp:-| VBscript ?

php:-) No Show Stopper Bugs
asp:-( just surf to any asp based portal and see what i’m talking about

php:-) Cross Platform Migration Strategy.
asp:-( Chilisoft ASP ? (cost lots of $$$s)

php:-| no application variables … but what is that anyway ? server’s
database ?
asp:-) application variables

php:-| HTTP GET and POST variables are automatically created as global
variables (security??)
asp:-| i have to “Request.” my HTTP GET and POST variables??

php:-( if your php script is not working , you can blame no one but yourself

asp:-) You can blame Micro$oft, iis , asp and so on…

php:-( you don’t have time for a coffie break because your computer never
crashes
asp:-) you have a lot of coffie breaks …

I will go through a basic setup of Sendmail as a smart host. The goal is to relay all mail outgoing from an internal OpenBSD server to a gateway that will then send out the email on the server’s behalf. No inbound email traffic is permitted to the internal OpenBSD server only the outside world sees the gateway as the mail server. I’m by no means a Sendmail expert, the steps I explain here is what I’ve learned on my own and with the assistance of dhartmei and NicM in IRC EFNet #OpenBSD channel and cannonball in IRC Freenode #sendmail channel.

Setup

• Make a copy of openbsd-localhost.mc, “cp usr/share/sendmail/cf/openbsd-localhost.mc /usr/share/sendmail/cf/openbsd-localhost-smarthost.mc”.
• Edit openbsd-localhost-smarthost.mc and add this statement without double quotes “include(`/usr/share/sendmail/m4/cf.m4′)dnl”.
• Edit openbsd-localhost-smarthost.mc and add this statement without double quotes “define(`SMART_HOST’,`input_host_here’)dnl”. Note: if an IP address is used enclose the IP address with square brackets.
• Compile configuration file without double quotes, “sudo m4 /usr/share/sendmail/cf/openbsd-localhost-smarthost.mc > /etc/mail/localhost.cf”. If you receieve “permission denied”, try this instead “sudo ksh -c ‘m4 /usr/share/sendmail/cf/openbsd-localhost-smarthost.mc > /etc/mail/localhost.cf’”.
• Shutdown Sendmail (kill). Without double quotes do “sudo kill ‘head -n1 /var/run/sendmail.pid’”.
• Start Sendmail as started previously, “sendmail -L sm-mta -C/etc/mail/localhost.cf -bd -q30m”. You can see how sendmail was started by executing without double quotes “grep sendmail /etc/rc.conf*”. In my case it returned /etc/rc.conf:sendmail_flags=”-L sm-mta -C/etc/mail/localhost.cf -bd -q30m”.

openbsd-localhost-smarthost.mc example

divert(-1)
#
# Copyright (c) 1998 Sendmail, Inc.  All rights reserved.
# Copyright (c) 1983 Eric P. Allman.  All rights reserved.
# Copyright (c) 1988, 1993
#       The Regents of the University of California.  All rights reserved.
#
# By using this file, you agree to the terms and conditions set
# forth in the LICENSE file which can be found at the top level of
# the sendmail distribution.
#
#

#
#  This configuration only runs sendmail on the localhost interface.
#  This allows mail on the local host to work without accepting
#  connections from the net at large.
#

divert(0)dnl
include(`/usr/share/sendmail/m4/cf.m4')dnl
VERSIONID(`@(#)openbsd-localhost-smarthost.mc $Revision: 1.4 $')
OSTYPE(openbsd)dnl
FEATURE(nouucp, `reject')dnl
FEATURE(`accept_unresolvable_domains')dnl
FEATURE(`no_default_msa')dnl
define(`SMART_HOST',`[10.10.8.1]')dnl
MAILER(local)dnl
MAILER(smtp)dnl
DAEMON_OPTIONS(`Family=inet, address=127.0.0.1, Name=MTA')dnl
DAEMON_OPTIONS(`Family=inet6, address=::1, Name=MTA6, M=O')dnl
DAEMON_OPTIONS(`Family=inet, address=127.0.0.1, Port=587, Name=MSA, M=E')dnl
DAEMON_OPTIONS(`Family=inet6, address=::1, Port=587, Name=MSA6, M=O, M=E')dnl
CLIENT_OPTIONS(`Family=inet6, Address=::')dnl
CLIENT_OPTIONS(`Family=inet, Address=0.0.0.0')dnl
dnl
dnl Some broken nameservers will return SERVFAIL (a temporary failure)
dnl on T_AAAA (IPv6) lookups.
define(`confBIND_OPTS', `WorkAroundBrokenAAAA')dnl