How to convert voicemail emails
by labmin on December 4, 2010
My work upgraded our phones to the Droids! Unfortunately the Droid could not play our company voicemails from our PBX. So I wrote this script to intercept the voicemail emails, convert the wav file to an mp3 and then forward the voicemail to the original user.
#!/bin/bash
export EMAIL='PBX <pbx>'
cd /mail/drop/new
for i in $( ls ); do
cd mail/drop/new
# This removes system generated emails
axBad=$( cat $i | grep X-Original-To: | sed 's/...............\(.*\)/\1/' )
if [ "$axBad" == "root" ]; then
rm -f /zxa/mail/drop/new/$i
else
# Grab the to and from address
axto=$( cat $i | grep "To: \"\"" $i | sed 's/........\(.*\)/\1/' | sed 's/\(.*\)................./\1/')
axfrom=$( cat $i | grep From: | sed 's/.............\(.*\)/\1/' | sed 's/\(.*\)./\1/' )
axsubject=$( cat $i | grep Subject: | sed 's/.........\(.*\)/\1/' )
axbody1=$( sed -n '30,30p' $i )
axbody2=$( sed -n '31,31p' $i )
axbody3=$( sed -n '32,32p' $i )
axbody4=$( sed -n '33,33p' $i )
axbody5=$( sed -n '34,34p' $i )
axbody6=$( sed -n '35,35p' $i )
echo $axbody1 > /etc/postfix/vmail/proc/body.txt
echo $axbody2 >> /etc/postfix/vmail/proc/body.txt
echo $axbody3 >> /etc/postfix/vmail/proc/body.txt
echo $axbody4 >> /etc/postfix/vmail/proc/body.txt
echo $axbody5 >> /etc/postfix/vmail/proc/body.txt
echo $axbody6 >> /etc/postfix/vmail/proc/body.txt
#Strip the wav file from the eml file
uudeview -i -p /etc/postfix/vmail/proc +e .wav /mail/drop/new/$i > /dev/null 2>&1
# Convert the wav file to mp3
/usr/local/bin/ffmpeg -i /etc/postfix/vmail/proc/msg0001.WAV -ab 8k /etc/postfix/vmail/proc/msg0001.mp3 > /dev/null 2>&1
#send the new email out
cd /etc/postfix/vmail/proc
mutt -n -s "$axsubject" -a msg0001.mp3 -- "$axto@mydoamin.com" < body.txt
#clean up directory
rm -rf /etc/postfix/vmail/proc/*.*
rm -f /mail/drop/new/$i
fi
done
CentOS 5 Postfix
by labmin on December 4, 2010
Here is my sample setup for postfix running on CentOS 5
queue_directory = /var/spool/postfix command_directory = /usr/sbin daemon_directory = /usr/libexec/postfix mail_owner = postfix default_privs = nobody myhostname = zlabx.com mydomain = zlabx.com myorigin = $mydomain inet_interfaces = all unknown_local_recipient_reject_code = 550 mailq_path = /usr/bin/mailq.postfix setgid_group = postdrop html_directory = no # RECEIVING MAIL inet_interfaces = all mydestination = $myhostname, $mydomain, localhost show_user_unknown_table_name=no # RELAY CONTROL mynetworks = 127.0.0.1, /etc/postfix/relay_allow_list ## SMTPD # Simple SPAM restrictions smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, check_policy_service unix:private/policy-spf, check_sender_access hash:/etc/postfix/black_list, check_sender_access hash:/etc/postfix/white_list, reject_invalid_hostname, reject_non_fqdn_hostname, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_unauth_destination, reject_rbl_client zen.spamhaus.org, reject_rbl_client bl.spamcop.net, permit smtpd_helo_required = yes smtpd_client_restrictions = permit_mynetworks, reject_non_fqdn_hostname, reject_non_fqdn_sender, reject_unknown_sender_domain, permit # Tarpit those bots/clients/spammers who send errors or scan for accounts smtpd_error_sleep_time = 60 smtpd_soft_error_limit = 60 smtpd_hard_error_limit = 10 #Prevent email address harvesting attacks disable_vrfy_command = yes #Change reject codes to permanent unverified_recipient_reject_code = 550 unverified_sender_reject_code = 550 unknown_local_recipient_reject_code = 550 alias_maps = hash:/etc/aliases #Used to send outgoing mail through godaddy. smtpd_sasl_auth_enable = yes smtpd_sasl_path = smtpd relayhost = [smtpout.secureserver.net]:80 smtp_sasl_password_maps = hash:/etc/postfix/godaddy_login smtp_sasl_type = cyrus smtp_sasl_auth_enable = yes smtp_cname_overrides_servername = no smtp_sasl_security_options =
The line
check_policy_service unix:private/policy-spf,
Is not needed unless you have installed the postfix-policyd-spf-perl package from openspf.org. For more information on setting up spf see this howtoforge
I use godaddy for relaying my mail. Here is how to setup postfix to send your emails through an external provider, such as GoDaddy.
File: godaddy_login
[Your-Email-Server.com]:80 username@yourdomain.com:<your-password>
Don’t forget to run postmap on the godaddy_login file!
[zlabx]$ postmap /etc/postfix/godadddy_login
Converting Videos with FFmpeg
by James on September 15, 2010
I have been working on a website for me wife and recently needed to conver some viedos that she made to flash to display on her website. I have been playing around with different options to create a great output file to display on the web. I tought it would be nice to post my results.
Here is the method that I am useing and how it breaks down.
/usr/bin/ffmpeg -i Demo-Video.avi -sameq -ab 22050 -ar 44100 -s 512x384 -aspect 4:3 -b 3000 -f flv Demo-Video.flv
Explanations :
(-i) Input file name
(-sameq) Use same video quality as source
(-ab) Audio bitrate (default = 64)
(-ar) Audio sampling frequency ( default = 44100 Hz )
(-aspect) Aspect ratio ( 4:3, 16:9 )
(-b) Video bitrate in bit/s ( default = 200k )
(-f) Force format
(-s) Set frame size ( Width x Height)
Here is the link to the FFmpeg Documentation if you are looking for all the possible switches and what they mean.
Parse the Craigslist stream.
by James on September 14, 2010
So I am trying to find a house to rent. Everyday I am checking Craigslist, but this gets old fast! So finnaly I am like… I can write a script for that. I fire up a bash prompt and get to work.
Here is what I came up with. It is a simple scripts that curls an rss feed, strips out all the html mumbo jumbo, looks for a list of specific cities that I am willing to move to, saves my results to a file, and then finally emails me the list . The next time the script runs it checks to make sure that it does not email me the same results. I am using mutt to send an email from the bash script.
#!/bin/bash
axold=0
if [ -f update.txt ];then
rm -rf update.txt
fi
# The rss feed for my house search
rss="http://sandiego.craigslist.org/search/apa?query=house&srchType=A&minAsk=&maxAsk=&bedrooms=2&format=rss"
curl -s "$rss" | grep -E '<item rdf:about=|<title>' | sed s'/<item rdf:about="//'g \
| sed s'/<title><!\[CDATA\[/ /'g | sed s'/">//'g \
| sed s'/]]><\/title>//'g \
| sed s'/<title>craigslist san diego | apts\/housing for rent search "house"<\/title>/ /' \
| sed -n -e ":a" -e "$ s/html\n/html /gp;N;b a" \
| grep -i 'ocean beach\|point loma\|pacific beach\|southpark\|south park\|oceanbeach' > tmp.txt
# 1st loop for checking the new listings againts the old
while read newline
do
# 2nd loop loads the list of old matches to check
while read line
do
if [[ "$newline\n" == "$line\n" ]];then
axold=1
break
fi
done < oldlist.txt
if [ $axold != 1 ];then
echo "$newline" >> update.txt
echo "$newline" >> oldlist.txt
fi
axold=0
done < tmp.txt
rm -rf tmp.txt
#send email if update.txt exists
if [ -f update.txt ];then
mutt -n -s "New Craigslist Post" -- "james@zlabx.com" < update.txt
fi
rm -rf update.txt
Now lets make it check craigslist every 15mins.
[zlabx]$ crontab -e */15 * * * * /path/to/my/script/housesearch.sh