gregs http://gregs.tcias.co.uk helping me remember what I figure out Tue, 09 Mar 2010 06:52:56 +0000 http://wordpress.org/?v=2.5.1 en Upgrading to Lenny http://gregs.tcias.co.uk/2010/03/09/upgrading-to-lenny/ http://gregs.tcias.co.uk/2010/03/09/upgrading-to-lenny/#comments Tue, 09 Mar 2010 06:52:56 +0000 gregs http://gregs.tcias.co.uk/?p=481 It's been while since I attended to my VPS, I decided to spend some time last night upgrading my distribution from Etch to Lenny. This is normally a moment where your heart sinks as quite a few things do tend to go belly up, but I am happy to report that I only came across some minor issues and these were resolved in minutes as opposed to hours.

  1. MySQL : failed to start, complaining about:
    PLAIN TEXT
    CODE:
    1. /etc/init.d/mysql: ERROR: Using expire_logs_days without log_bin crashes
    2. the server. See README.Debian.gz

    Commenting out the expire_logs_days in the my.cnf file allowed me to restart MySQL.

  2. After the upgrade of Apache, my virtual hosts weren't working. A quick search via Google pointed me to this post - a quick edit of all of my host files and it was all working again.
  3. the php-mysql connector somehow hadn't been upgraded/installed so a quick
    PLAIN TEXT
    CODE:
    1. apt-get install php5-mysql

    fixed that problem.

  4. OpenBD : the only thing that remains broken was my tomcat5.5 Open BD install. Tomcat was working fine but Open BD refused to start up complaining about :
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    CODE:
    1. javax.servlet.ServletException: Open BlueDragon Engine Failed to initialise tags: java.awt.Color

    Since I am not really using it, it's not that important, but at some stage I'd like to get it working again. If you have any suggestions, please leave a comment.

]]> http://gregs.tcias.co.uk/2010/03/09/upgrading-to-lenny/feed/ SVN : authentication with a windows domain http://gregs.tcias.co.uk/2010/03/08/svn-authentication-with-a-windows-domain/ http://gregs.tcias.co.uk/2010/03/08/svn-authentication-with-a-windows-domain/#comments Tue, 09 Mar 2010 03:58:13 +0000 gregs http://gregs.tcias.co.uk/?p=480 Finally got round to implementing this for work. As a starting point I followed the instructions found here.

The config looked fine, but after restarting the service, I still wasn't getting prompted for a log in. After re-jigging the order to what you see below and restarting the apache service (we are using 2.0.59), it all worked. Maybe this will help someone else along the way.

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CODE:
  1. <Location /svn>
  2. DAV svn
  3. # any "/svn/foo" URL will map to a repository /usr/local/svn/foo
  4. SVNParentPath {drive letter}:/path/to/SVN/epositories/
  5.  
  6. AuthName "SVN"
  7. AuthType SSPI
  8. SSPIAuth On
  9. SSPIAuthoritative On
  10. SSPIOfferBasic On
  11. SSPIOmitDomain on
  12. SSPIDomain &lt;domain controller&gt;
  13. SSPIBasicPreferred On
  14. Require valid-user
  15. </Location>

]]> http://gregs.tcias.co.uk/2010/03/08/svn-authentication-with-a-windows-domain/feed/ gnumake: *** No rule to make target `all’ http://gregs.tcias.co.uk/2009/04/06/gnumake-no-rule-to-make-target-all/ http://gregs.tcias.co.uk/2009/04/06/gnumake-no-rule-to-make-target-all/#comments Tue, 07 Apr 2009 01:29:58 +0000 gregs http://gregs.tcias.co.uk/?p=479 I was using MacPorts to install ICU and Jam. After running the installer for the first time I got the following error message:

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CODE:
  1. sudo port install icu jam
  2. Error: Target org.macports.build returned: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_devel_icu/work/icu/source" && gnumake all " returned error 127
  3. Command output: sh: gnumake: command not found

Oops forgot to install XCode (you always forget to install something on a new machine :)). Quickly ran the XCode installer, however when I ran the command again I got a new error:

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CODE:
  1. sudo port install icu jam
  2. --->  Building icu
  3. Error: Target org.macports.build returned: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_devel_icu/work/icu/source" && gnumake all " returned error 2
  4. Command output: gnumake: *** No rule to make target `all'.  Stop.

Turns out you need to do a cleanup before attempting to run the command again:

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CODE:
  1. sudo port clean --work icu
  2. --->  Cleaning icu
  3. sudo port clean --work jam
  4. --->  Cleaning jam
  5. sudo port install icu jam
  6. --->  Fetching icu
  7. --->  Verifying checksum(s) for icu
  8. --->  Extracting icu
  9. --->  Configuring icu
  10. --->  Building icu
  11. --->  Staging icu into destroot
  12. --->  Installing icu @4.0_0
  13. --->  Activating icu @4.0_0
  14. --->  Cleaning icu
  15. --->  Fetching jam
  16. --->  Attempting to fetch jam-2.5.tar from http://distfiles.macports.org/jam/2.5
  17. --->  Verifying checksum(s) for jam
  18. --->  Extracting jam
  19. --->  Applying patches to jam
  20. --->  Configuring jam
  21. --->  Building jam
  22. --->  Staging jam into destroot
  23. --->  Installing jam @2.5_1
  24. --->  Activating jam @2.5_1
  25. --->  Cleaning jam

Time to continue the Mapnik install.

]]> http://gregs.tcias.co.uk/2009/04/06/gnumake-no-rule-to-make-target-all/feed/ Joshua Tree National Park http://gregs.tcias.co.uk/2009/03/07/joshua-national-park/ http://gregs.tcias.co.uk/2009/03/07/joshua-national-park/#comments Sun, 08 Mar 2009 03:42:39 +0000 gregs http://gregs.tcias.co.uk/?p=476

123

]]> http://gregs.tcias.co.uk/2009/03/07/joshua-national-park/feed/ cat to clipboard http://gregs.tcias.co.uk/2009/03/07/cat-to-clipboard/ http://gregs.tcias.co.uk/2009/03/07/cat-to-clipboard/#comments Sat, 07 Mar 2009 19:54:27 +0000 gregs http://gregs.tcias.co.uk/?p=475 Neat!

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  1. cat id_rsa.pub | pbcopy

]]> http://gregs.tcias.co.uk/2009/03/07/cat-to-clipboard/feed/ Up on the 74 http://gregs.tcias.co.uk/2009/03/06/up-on-the-74/ http://gregs.tcias.co.uk/2009/03/06/up-on-the-74/#comments Sat, 07 Mar 2009 02:10:20 +0000 gregs http://gregs.tcias.co.uk/?p=473


]]> http://gregs.tcias.co.uk/2009/03/06/up-on-the-74/feed/ I took it http://gregs.tcias.co.uk/2008/07/30/i-took-it/ http://gregs.tcias.co.uk/2008/07/30/i-took-it/#comments Wed, 30 Jul 2008 05:07:40 +0000 gregs http://gregs.tcias.co.uk/?p=471 I took the 2008 survey

Now you should too!

]]> http://gregs.tcias.co.uk/2008/07/30/i-took-it/feed/ VMWare and keyboard input http://gregs.tcias.co.uk/2008/07/09/vmware-and-keyboard-input/ http://gregs.tcias.co.uk/2008/07/09/vmware-and-keyboard-input/#comments Thu, 10 Jul 2008 01:07:03 +0000 gregs http://gregs.tcias.co.uk/?p=470 This morning I fired my Windows XP VM on my mac and my keyboard input simply stopped working. After a couple of VM reboots, which had no effect, I did some googling. The first result suggested typing a few commands to determine what had disabled it:

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CODE:
  1. $ ioreg -l -w 0 | grep SecureInput
  2. |   "IOConsoleUsers" = ({"kCGSSessionSecureInputPID"=177,"kCGSSessionLoginwindowSafeLogin"=No,"kCGSSessionAuditIDKey"=0,"kCGSessionLoginDoneKey"=Yes,"kCGSSessionSystemSafeBoot"=No,"kCGSSessionOnConsoleKey"=Yes,"kCGSSessionUserIDKey"=501,"kSCSecuritySessionID"=11622192,"kCGSSessionUserNameKey"="gregstewart","kCGSSessionGroupIDKey"=20,"kCGSSessionConsoleSetKey"=0,"kCGSSessionIDKey"=256,"kCGSessionLongUserNameKey"="User"})
  3. $ ps auxwwww | grep 177
  4. user 177   7.8  9.2   652520 192788   ??  S    10:51pm  59:09.22 /Applications/Firefox.app/Contents/MacOS/firefox-bin -psn_0_110619
  5. user 1155   0.0  0.0   599820    464 s001  S+   10:44am   0:00.00 grep 177

According to the post the application that was blocking it was FireFox. "kCGSSessionSecureInputPID"=177 is the info you need to look for, where in my case 177 was the number I needed to use in the next command. Incredulous as I was, I closed FireFox and hey presto keyboard input was working again.

Hopefully this post will help others.

]]> http://gregs.tcias.co.uk/2008/07/09/vmware-and-keyboard-input/feed/ AJAX calls and expired sessions http://gregs.tcias.co.uk/2008/06/19/ajax-calls-and-expired-sessions/ http://gregs.tcias.co.uk/2008/06/19/ajax-calls-and-expired-sessions/#comments Thu, 19 Jun 2008 08:12:44 +0000 gregs http://gregs.teacupinastorm.com/?p=477 I have been updating a bunch of code recently to make use of the new features in Prototype 1.6 and one of the great additions in this release was the introduction of Automatic JavaScript response evaluation. This allowed me to improve on my session checking code without having to fuff around with the response information sent back to the client. The problem was with XHR requests: i.e. if the user initiated such a request when his session had expired, then usually the response would fail or worse just hang.

The snippet below shows my new session checking code.

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JAVASCRIPT:
  1. <script type="text/javascript"><!--
  2. function myAjaxCall() {
  3.     url = "index.cfm";
  4.     pars="?fuseaction.someFuseaction&par1=1&par2=2";
  5.     new Ajax.Updater(\\'div_to_populate\\',
  6.        url, {
  7.        method: \\'post\\',
  8.        postBody: pars,
  9.        onLoading: function()
  10.        {
  11.           //code to run while making the request
  12.        },
  13.        onComplete : function(transport,json)
  14.        {
  15.           if(json && json[\\'session\\'])
  16.           {
  17.              setSessionExpired();
  18.           } else {
  19.                         //Code to run when the request has completed
  20.          }
  21.        },
  22.        onFailure: function ()
  23.        {
  24.          alert(\\'something went wrong\\');
  25.        },
  26.        evalScripts:true
  27.     });
  28.  }
  29.  
  30. function setSessionExpired()
  31. {
  32.     alert(\\'Your session has timed out\\');
  33.     window.location=\\'http://<cfoutput>#cgi.HTTP_HOST#</cfoutput>/?fuseaction=home.home\\';
  34. }
  35. // --></script>

The trick is to intercept the call when you do your session checking at the back end. Let's say you have a fuseaction called login.login (see below and yes this is fusebox 3 :S) where you display the login form when a user is not logged in, this is where I inserted the check for an XHR request, by looking at the http headers sent along with the request. The key here is a new header attribute passed in with Prototype "X-Requested-With". If this attribute exists then I know it's an XHR request and I can create a custom JSON header with an error struct that holds a key called session with a value of timeout. All I then need to do is encode the struct as JSON and pass that encoded struct back to the browser.

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CODE:
  1. <cfcase value="login">
  2.         <!--- gvs 1Feb08 - handles XHR requests that session timeout --->
  3.         <cfset attributes.request = GetHttpRequestData()/>
  4.         <cfif StructKeyExists(attributes.request.headers,"X-Requested-With")>
  5.             <cfsetting showdebugoutput="false">
  6.             <cfparam name="attributes.jsonObj" default="#CreateObject('component','com.jehiah.json')#"/>
  7.             <cfparam name="error" default="#StructNew()#"/>
  8.             <cfset error['session']='timeout'/>
  9.             <cfif StructKeyExists(attributes,"jsonObj")>
  10.                 <cfheader name="X-JSON" value="#trim(attributes.jsonObj.encode(error))#" /><cfabort>
  11.             </cfif>
  12.         </cfif>
  13.  
  14.         <cfif StructKeyExists(session,'login')>
  15.             <cfset attributes.login = session.login/>
  16.         <cfelse>
  17.             <cfparam name="attributes.login" default=""/>
  18.         </cfif>
  19.  
  20.         <cfscript>
  21.             xfa.submitform='index.cfm?fuseaction=login.processlogin';
  22.         </cfscript>
  23.         <cfinclude template="#affiliate('dsp_login.cfm')#"/>
  24. </cfcase>

Now let's jump back to the JavaScript code and take a look at the onComplete function again:

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JAVASCRIPT:
  1. onComplete : function(transport,json)
  2. {
  3.         if(json &amp;&amp; json['session'])
  4.         {
  5.                 setSessionExpired();
  6.         } else {
  7.                 //Code to run when the request has completed
  8.         }
  9. }

If there's a JSON object and it has a key of session then I call my setSessionExpired function which redirects the users. Now the json session key only exists in these situations since the call normally just passes back the result of the call.

]]> http://gregs.tcias.co.uk/2008/06/19/ajax-calls-and-expired-sessions/feed/ Goosh http://gregs.tcias.co.uk/2008/06/03/goosh/ http://gregs.tcias.co.uk/2008/06/03/goosh/#comments Wed, 04 Jun 2008 01:43:15 +0000 gregs http://gregs.tcias.co.uk/?p=469 The unofficial Google Shell... I like it!

]]> http://gregs.tcias.co.uk/2008/06/03/goosh/feed/