I have previously setup the port forwarding, etc. according to Apple, but never could get a successful connection using video or audio (or screen sharing).

After reading a post on the OpenBSD misc mailing list I went back and read the OpenBSD 4.5 pf.conf man page.

There is a section of the man page that states (my emphasis):

fragment reassemble
Using scrub rules, fragments can be reassembled by normalization.
In this case, fragments are buffered until they form a complete
packet, and only the completed packet is passed on to the filter.
The advantage is that filter rules have to deal only with complete
packets, and can ignore fragments. The drawback of caching frag-
ments is the additional memory cost. But the full reassembly
method is the only method that currently works with NAT. This is
the default behavior of a scrub rule if no fragmentation modifier
is supplied.

My scrub settings were such that I was filtering not complete packets, but fragments. The moment I changed the scrub settings to this:

scrub in on $ext_if all fragment reassemble


All worked perfect. I can initiate iChat calls and receive them too. Desktop sharing now works as well. All using Google talk (jabber) in iChat.

Note that in OpenBSD 4.6 or current there have been PF changes, so the wording of the scrub rule may be different. Always read the pf.conf man page for the release you are on.

Initialized empty Git repository in /Users/lantrix/tweet/.git/
Using higher level of URL: http://plugins.svn.wordpress.org/tweet => http://plugins.svn.wordpress.org

And it would proceed to hit up the entire wordpress repo.
After reading a possible solution on Charlie’s Old blog, I stubmled across a newer way to do this.

As of v1.6.4 of git, you can now use a –no-minimize-url when doing a git-svn clone. This makes git clone only the part of the repo you want; and the added bonus is you can get all your tags and branches.

Here is how I did it:

git svn clone --prefix=svn/ --stdlayout \
--authors-file=authors.txt \
--no-minimize-url http://plugins.svn.wordpress.org/tweet/


It still took a while to parse all the SVN history, and now of course this stands out in the git-svn doco

The authors.txt file just mapped my svn users to git user/email pair, e.g.:

lantrix = Lantrix 
plugin-master = none 
(no author) = none 

You will probably want to have a look at these set of scripts. Have a read of NothingMuch’s perl blog for extra steps and details on extra svn conversion scripts.

I’ve also customised the PS1 to show user/host/path.

You should probably setup git bash completion as well. This can be done by sourcing the bash completion script that is available in the git source code as shown (change path to where you place script):

Have fun.

If you are working in Excel, and you want to show the worksheet name in a Cell on that worksheet, you can use the CELL function to do so.
By default the CELL function will return the current document name, if used with the filename info_type:

=CELL("filename")

This provides a full path to the spreadsheet, with the worksheet of the current Cell at the end, e.g:

C:\folder\[myfile.xls]Sheet1

You can easily get just the worksheet name by using the FIND and MID functions to do the hard work. You need to find the location of the last square bracket, and find achieves this as shown:
=FIND("]",CELL("filename"))

This would return the position of the last bracket. In this case it is at position 22 of the text that CELL(“filename”) returns. The MID function can extract text starting at a location for n length, where n is an arbitrary number. So we would combine MID, FIND and CELL functions to return just the worksheet name like this:

=MID(CELL("filename"),FIND("]",CELL("filename"))+1,255)

The reason we add a +1 is because we want to start extracting the text one character AFTER the right square bracket, e.g. at the start of the Worksheet name. Our result is:

Sheet1

Worksheet names from another Worksheet

So far so good, and how is this any different than any other blog post or forum post on the net explaining this? So far it’s not, but here comes the fun part.

What if you have multiple Worksheets, and you do this:

1. Have a cell with content, Sheet1!B2
2. Sheet1!B2 displays the content of OtherSheet!H5, i.e.:

   =OtherSheet!H5

3. You want Sheet1!B1 to display the worksheet name where the CONTENT of Sheet1!B2 comes from.

You could try using the MID/FIND/CELL function combination to try this. In Sheet1!B1 you would enter:

=MID(CELL("filename",B2),FIND("]",CELL("filename",B2))+1,255)

However this would yield the worksheet name of B2 itself, not the worksheet where you are taking your content from:

Sheet1

Not what we wanted. Somehow you need to get the Value of the formula used =OtherSheet!H5 and look up the worksheet name for OtherSheet!H5

The Solution

To do this you ware going to need to do two things:

1. Make a new function to display the formula, sans the equal sign
2. Make your CELL function use the result of your function to lookup the filename info_type

We can use the Excel VB Editor to create a new function, and call it GetLocation:


Function GetLocation(Cell As Range) As String
GetLocation = Mid(Cell.Formula, 2)
End Function


But we can’t just use GetLocation to directly feed the CELL function. We need to use another handy function INDIRECT. This allows us to return the result of the GetLocation function as a Reference. This then allows the CELL function to evaluate the filename/Worksheet details for the destination cell in the other worksheet:

=MID(CELL("filename",INDIRECT(GetLocation(B2))),FIND("]",CELL("filename",INDIRECT(GetLocation(B2))))+1,256)

This now provides the Worksheet name of the cell that Sheet1!B1 is using to get it’s content from which is OtherSheet!H5:

OtherSheet

This is very handy when you need to show on a master worksheet which other worksheet your data is actually coming from. Windows Excel only, not Mac I’m afraid – until they bring back VB. Enjoy!

In my case I am Using Solaris 9, and have Oracle 10g databases and client files for use by BOE.

When running the cmsdbsetup.sh script you get the following error pertaining to clntsh:

           Business Objects 

Current CMS Data Source: DBNAME 

err: Error: Failed to get cluster name.
err: Error description: Unable to load clntsh 

select (Select a Data Source)
reinitialize (Recreate the current Data Source)
copy (Copy data from another Data Source)
changecluster (Change current cluster name)
selectaudit (Select an Auditing Data Source) 

[select(6)/reinitialize(5)/copy(4)/changecluster(3)/selectaudit(2)/back(1)/quit(0)]
----------------------------------------------------------

This error “Unable to load clntsh” refers to the libclntsh.so library used by the Oracle client. Since BOE runs as 32bit, the 32bit Oracle client libraries should be accessible by the user running BOE.

If you are running a 64 bit Unix and a 64bit Oracle install check that the environment for the user running BOE (user that will run the CMS) has the 32bit libraries in the path:
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ORACLE_HOME/lib:$ORACLE_HOME/lib32

Then check that either the user is a member of the Oracle dba Unix group or everyone has permissions to access the 32bit libraries under Oracle 10g:

su - oracle
chmod o+rx $ORACLE_HOME/lib32/*

Feel free to leave any comments if you need help with this.

Many people sent suggestions to Apple to fix this, but it seemed to be falling on deaf ears.

Little did we know that Apple were releasing a new version of the touchpad driver included with Bootcamp 3.0 on the Snow Leopard install DVD.

I’ve updated my Bootcamp to 3.0, and indeed the applemtp.sys driver version has increased to 2.1.2.112. The FAQ for the Snow Leopard update states that Bootcamp 3.0 has:

“Improved tap-to-click support – The ability to tap the track pad to click the mouse button is now supported on all Mac portables that run Boot Camp.”

In my tests, so far, there has been no more crashes. I get to use double finger right click tap, and the track pad responsiveness that I got in the older buggy driver is back as well.

Thanks Apple. No more BSOD.

• Vendor: Novatel Wireless Inc.
• Model: GSM
• APN: 3netaccess
• CID: 1

I installed Snow Leopard as an Upgrade (not a fresh install) after having a CCC backup and a Time machine backup in place.

When I plugged in my 3 expresscard, 10.6 detects the card, initialises and populates the WWAN icon with “Telstra 3G: Not Configured”.

It detects the card as a “Novatel Wireless HSDPA Modem”, and automatically configures the Network Advanced settings of the card, as shown:

The question is: Why is the APN telstra.datapack setup as default?

I am able to change the APN to 3netaccess, which results in a successful connection to 3:
Wed Sep 2 15:38:25 2009 : Initializing phone: ATE0V1&F&D2&C1S0=0
Wed Sep 2 15:38:25 2009 : Initializing PDP context: AT+CGDCONT=1,"IP","3netaccess"
Wed Sep 2 15:38:25 2009 : Initializing with secondary command: AT$NWPDN=0
Wed Sep 2 15:38:25 2009 : Dialing: ATD*99***1#
Wed Sep 2 15:38:25 2009 : Waiting for connection
Wed Sep 2 15:38:25 2009 : Connection established
Wed Sep 2 15:38:28 2009 : Serial connection established.
Wed Sep 2 15:38:28 2009 : Using interface ppp0
Wed Sep 2 15:38:28 2009 : Connect: ppp0 <--> /dev/cu.wwan
Wed Sep 2 15:38:32 2009 : Could not determine remote IP address: defaulting to 10.64.***.***
Wed Sep 2 15:38:32 2009 : local IP address 115.130.***.***
Wed Sep 2 15:38:32 2009 : remote IP address 10.64.***.***
Wed Sep 2 15:38:32 2009 : primary DNS address 202.124.68.182
Wed Sep 2 15:38:32 2009 : secondary DNS address 202.124.65.22

The annoying thing is the WWAN menu still shows Telstra when connected.


Looking at the WWAN system file:
cd /System/Library/Extensions/IOSerialFamily.kext/\
Contents/PlugIns/AppleWWANSupport.kext/Contents/\
Resources/
less countryCodes.plist
it has only Telstra, Optus and Vodafone carriers listed. I think this could be the cause of the default APN being populated in the Advanced settings. I can’t find where the “Telstra 3G” in the WWAN menu item is coming from though.

I’d appreciate if anyone can give their thoughts on how to fix this.

First off install some require packages, including the zziplib package:

export PKG_PATH=http://mirror.aarnet.edu.au/pub/OpenBSD/4.5/packages/i386/
pkg_add -v zziplib
pkg_add -v autoconf-2.62

Now download and extract the PECL zip package:

mkdir /usr/local/src/
cd /usr/local/src/
wget http://pecl.php.net/get/zip
tar zxvf zip
cd zip-1.10.2/

Compile PECL zip, making sure you set your correct autoconf to use:

export AUTOCONF_VERSION=2.62
phpize
./configure
make
make install

Finally setup php5 and restart httpd:

cat << EOF >> /var/www/conf/php.ini
extension=zip.so
EOF
sudo apachectl stop
sudo apachectl start


Of course, this will go stale over time as new releases and versions come out, so YMMV.

Todays post is a 2009 midyear round up of the status of the Google Mobile applications: Latitude, Voice, Docs, Mail, Maps and Reader. My focus is on the iPhone mobile platform.

• Google Latitude

  Google Latitude is their location and status message product. The application up until now has been available on other phone platforms such as Android, but lacking on iPhone.

  In the mean time, iPhone users have had to look elsewhere. There are other similar products that perform locational “check-ins” and integrate with services such as Twitter. Brightkite is an example of a well written locational application.

  Google had actually written a Latitude application for iPhone, but it was rejected. Apple were concerned that it was too similar to the Maps app shipped with iPhone.

  Google decided to go ahead and rewrite Latitude as a webapp for the iPhone. It was announced late July 2009, and can be accessed from the Google mobile home page or by using the Google Mobile application.

• Google Voice

  The recent controversy with the rejected Google Voice application hangs in the air. This week David Pogue (via Mashable) blogged about Google rewriting their rejected application as a webapp, much the same as Latitude now runs.

  If they get this stood up, this will be the next step in the move from the old school to the new, being VOIP. With Skype possibly on the way out by 2010, Google may fill the void – albeit with many more functions than a simple VOIP application.

  For the time being, there is no iPhone capability for Google Voice.

• Google Docs

  Google docs is currently accessible on the iPhone from Google as a mobile web application.

  The current limitation with the mobile web application is that it is view only, and does not allow sharing of your documents. To perform all the functions you need to use a full browser

• Google Mail

  The iPhone has you covered when it comes to mail. You can either use the built in email application to access Gmail via IMAP, or access the mobile web Gmail. The mobile web Gmail is full featured, and makes use of iPhone/AJAX specific web features to give you an almost dedicated app like experience.

  On the other hand, the benefit of using the built in Mail is offline reading/composing and excellent integration the the iPhone V3 cut/copy/paste features; even for photos and voice memos.

• Google Maps

  Google maps is one of the core applications of the iPhone and iPod line. It comes pre-installed from Apple. The quality of this application has increased with the current V3 firmware providing outstanding features.

• Google Reader

  There is no native application for Google reader. But don’t let this stop you. A couple of avenues are available.

  The mobile web application for reader is as mature as Google’s mobile Gmail. It allows you to perform almost all the features that the full web based reader does, and it makes use of the iPhone safari features.

  If you want something Application based – a new alternative is emerging. The NetNewsWire/FeedDaemon product suite is an RSS reader from NewsGator for the Mac/Windows platforms, respectively. They have a dedicated iPhone application that syncs with the desktop products. NewsGator recently announced that their Beta desktop products now sync with Google Reader, and that an update to their iPhone app is on the way. This solution will allow synchronisation of RSS feeds and unread item status across your Desktop and Google reader, but the dedicated iPhone app is not out yet. You can watch for their iPhone announcement from @newsgator on Twitter, or at their blog.

You can download the Google Mobile application from the iTunes store.

I’ve uploaded the initial public release, v1.2, of my simple Tweet plugin to the Wordpress Plugin Repository. You can install the plugin by:

• downloading it from http://wordpress.org/extend/plugins/tweet/ ; or
• On a recent version of wordpress, v2.7 or above, follow these steps:
  1. Login to your wordpress dashboard
  2. Select the Plugins/Add New menu item as shown
     
  3. Search for Author lantrix as shown
     
  4. Click on the Install link for the Tweet plugin

If you need any assistance, you can leave a comment over on the dedicated page for the Tweet Wordpress plugin for Twitter.

If you like the plugin, I’m happy to accept donations if that’s your thing.