Powershell Diff Directory

I wanted to create a file diff between two different directories. Unfortunately, the Copy-Item CmdLt will not (as far as I know) create the directory structure while copying. This is a bummer. I wanted to keep all of the files in the pipe as opposed to to getting all the files first because of the number of files in the directory structure. Here's what I cam up with



$fromDir = "C:\FromDir";
$toDir = "C:\ToDir";
$diffDir = "C:\DiffDir";


Get-ChildItem -Recurse -Path $fromDir | % {
if ((Test-Path (Join-Path -Path $toDir -ChildPath ([string]$_.FullName).Replace($fromDir, ""))) -eq $false)
{
if ((Test-Path (Join-Path -Path $diffDir -ChildPath ([string]$_.Directory).Replace($fromDir, ""))) -eq $false)
{
New-Item -Type "Directory" -Path (Join-Path -Path $diffDir -ChildPath ([string]$_.Directory).Replace($fromDir, ""));
}
Copy-Item -Recurse -Force $_.FullName -Destination (Join-Path -Path $diffDir -ChildPath ([string]$_.FullName).Replace($fromDir, ""));
}
};



As always, if anyone know a better way to do this, let me know.

Powershell Rename-Item vs Copy-Item: Changing file names to upper case

I needed recursively change all file and sub-directory names in a directory from mixed case to upper case. To me, this felt like a problem for PowerShell, but maybe I was wrong. Here was my first attempt:



Get-ChildItem -Recurse -Path "C:\media" | % {Rename-Item $_.FullName -NewName ([string]$_.Name).ToUpper()};


However, I received the following error:


Rename-Item : Source and destination path must be different.


So it looks like PowerShell refused to rename file1 to FILE1, because it thinks that they are the same file. In order to get around this I ended up copying the entire tree, and even that command isn't particularly elegant:


Get-ChildItem -Recurse -Path "C:\media" | % {Copy-Item -Force $_.FullName ([string]$_.FullName).Replace("C:\media", "C:\MEDIA2").ToUpper()};


If there is a better way to do this, I'd love to know.

XPlanner Authentication with NTLM

I spent most of the day setting up XPlanner and the documentation seemed to be lacking in a few spots. I'll go over the caveats I stumbled on.

The XPlanner install was happening on the lone linux box (Fedora 8) on an NT domain. The box was almost completely empty so I had to install java first. I chose to install the jsdk 1.4.2 even though that version's is EOL'd. XPlanner hasn't been updated in a while (since 2006) and I didn't want to mess w/ a new version of the sdk.

I upacked and installed the "standalone" version of XPlanner 0.7b7. So far so good. I was immediately able to use the default username/password to login.

The hardest part was figuring out how to authenticate based on our NT credentials. Most of the configuration occurs in the xplanner-0.7b7-standalone/webapps/ROOT/WEB-INF/classes/xplanner.properties file.

Here's how I was able to get the NT authentication to work. In the xplanner.properties file, find the authentication strings:


#
# XPlanner security configuration
#
xplanner.security.login[0].module=com.technoetic.xplanner.security.module.XPlannerLoginModule
xplanner.security.login[0].name=XPlanner
xplanner.security.login[0].option.userIdCaseSensitive=true
xplanner.security.login[0].option.debug=true

#xplanner.security.login[1].module=com.technoetic.xplanner.security.module.jndi.JNDILoginModule
#xplanner.security.login[1].name=JNDI
#xplanner.security.login[1].option.userIdCaseSensitive=false
#xplanner.security.login[1].option.debug=true
#xplanner.security.login[1].option.connectionURL=
#xplanner.security.login[1].option.connectionName=cn=
#xplanner.security.login[1].option.connectionPassword=
#xplanner.security.login[1].option.digest=SHA
#xplanner.security.login[1].option.userPattern=
#xplanner.security.login[1].option.userPassword=
#xplanner.security.login[1].option.authentication=simple
#xplanner.security.login[1].option.derefAliases=never
#xplanner.security.login[1].option.userSearch=cn={0}
#xplanner.security.login[1].option.userSubtree=true
#xplanner.security.login[1].option.roleBase=
#xplanner.security.login[1].option.roleName=
#xplanner.security.login[1].option.roleSearch=(uniqueMember={0})

# NTLM login module
#xplanner.security.login[2].module=com.technoetic.xplanner.security.module.ntlm.NtlmLoginModule
#xplanner.security.login[2].name=NTLM
#xplanner.security.login[2].option.userIdCaseSensitive=false
#xplanner.security.login[2].option.domain=DOMAIN
#xplanner.security.login[2].option.controller=CONTROLLER


To use the NTLM module, comment out the first set to security strings, uncomment the NTLM strings, and change the NTLM array index to 0. Here's how my file looked after I finished.


#
# XPlanner security configuration
#
#xplanner.security.login[0].module=com.technoetic.xplanner.security.module.XPlannerLoginModule
#xplanner.security.login[0].name=XPlanner
#xplanner.security.login[0].option.userIdCaseSensitive=true
#xplanner.security.login[0].option.debug=true

#xplanner.security.login[1].module=com.technoetic.xplanner.security.module.jndi.JNDILoginModule
#xplanner.security.login[1].name=JNDI
#xplanner.security.login[1].option.userIdCaseSensitive=false
#xplanner.security.login[1].option.debug=true
#xplanner.security.login[1].option.connectionURL=
#xplanner.security.login[1].option.connectionName=cn=
#xplanner.security.login[1].option.connectionPassword=
#xplanner.security.login[1].option.digest=SHA
#xplanner.security.login[1].option.userPattern=
#xplanner.security.login[1].option.userPassword=
#xplanner.security.login[1].option.authentication=simple
#xplanner.security.login[1].option.derefAliases=never
#xplanner.security.login[1].option.userSearch=cn={0}
#xplanner.security.login[1].option.userSubtree=true
#xplanner.security.login[1].option.roleBase=
#xplanner.security.login[1].option.roleName=
#xplanner.security.login[1].option.roleSearch=(uniqueMember={0})

# NTLM login module
xplanner.security.login[0].module=com.technoetic.xplanner.security.module.ntlm.NtlmLoginModule
xplanner.security.login[0].name=NTLM
xplanner.security.login[0].option.userIdCaseSensitive=false
xplanner.security.login[0].option.domain=DOMAIN
xplanner.security.login[0].option.controller=CONTROLLER


The NTLM module uses the local DB as a fall back, so any logins that you creaed locally that aren't in the Active Directory should still work.

JPEG Marker codes

I'm doing a bit of JPEG manipulation for a project and it took me longer than I would have liked to find a consise table of JPEG segment markers or frame markers or whatever you want to call them. Here's a C# enum with all the values. Hopefully that will save some typing for you.

        public enum JpegMarkers

        {

            // Start of Frame markers, non-differential, Huffman coding

            HuffBaselineDCT = 0xFFC0,

            HuffExtSequentialDCT = 0xFFC1,

            HuffProgressiveDCT = 0xFFC2,

            HuffLosslessSeq = 0xFFC3,




            // Start of Frame markers, differential, Huffman coding

            HuffDiffSequentialDCT = 0xFFC5,

            HuffDiffProgressiveDCT = 0xFFC6,

            HuffDiffLosslessSeq = 0xFFC7,




            // Start of Frame markers, non-differential, arithmetic coding

            ArthBaselineDCT = 0xFFC8,

            ArthExtSequentialDCT = 0xFFC9,

            ArthProgressiveDCT = 0xFFCA,

            ArthLosslessSeq = 0xFFCB,




            // Start of Frame markers, differential, arithmetic coding

            ArthDiffSequentialDCT = 0xFFCD,

            ArthDiffProgressiveDCT = 0xFFCE,

            ArthDiffLosslessSeq = 0xFFCF,




            // Huffman table spec

            HuffmanTableDef = 0xFFC4,




            // Arithmetic table spec

            ArithmeticTableDef = 0xFFCC,




            // Restart Interval termination

            RestartIntervalStart = 0xFFD0,

            RestartIntervalEnd = 0xFFD7,




            // Other markers

            StartOfImage = 0xFFD8,

            EndOfImage = 0xFFD9,

            StartOfScan = 0xFFDA,

            QuantTableDef = 0xFFDB,

            NumberOfLinesDef = 0xFFDC,

            RestartIntervalDef = 0xFFDD,

            HierarchProgressionDef = 0xFFDE,

            ExpandRefComponents = 0xFFDF,




            // App segments

            App0 = 0xFFE0,

            App1 = 0xFFE1,

            App2 = 0xFFE2,

            App3 = 0xFFE3,

            App4 = 0xFFE4,

            App5 = 0xFFE5,

            App6 = 0xFFE6,

            App7 = 0xFFE7,

            App8 = 0xFFE8,

            App9 = 0xFFE9,

            App10 = 0xFFEA,

            App11 = 0xFFEB,

            App12 = 0xFFEC,

            App13 = 0xFFED,

            App14 = 0xFFEE,

            App15 = 0xFFEF,




            // Jpeg Extensions

            JpegExt0 = 0xFFF0,

            JpegExt1 = 0xFFF1,

            JpegExt2 = 0xFFF2,

            JpegExt3 = 0xFFF3,

            JpegExt4 = 0xFFF4,

            JpegExt5 = 0xFFF5,

            JpegExt6 = 0xFFF6,

            JpegExt7 = 0xFFF7,

            JpegExt8 = 0xFFF8,

            JpegExt9 = 0xFFF9,

            JpegExtA = 0xFFFA,

            JpegExtB = 0xFFFB,

            JpegExtC = 0xFFFC,

            JpegExtD = 0xFFFD,




            // Comments

            Comment = 0xFFFE,




            // Reserved

            ArithTemp = 0xFF01,

            ReservedStart = 0xFF02,

            ReservedEnd = 0xFFBF

        };

Never seen this before...

So with my new job I've been tasked to write an installer for an ASP.NET website. I wanted to be able to set a few IIS properties programatically, such as Virtual Directory permissions and locations, and the .net version used by the ASP.NET interpreter. So I searched google for this string: "programmatically set asp.net version" And here's what I got:


Interesting, I ddin't know google actually cared. I entered the captcha and on I went, but I'm starting to wonder what other strings google is blocking/censuring/limiting.

eApps and yum

One of my new projects is hosted on eApps. While they've been great so far, I spent some time trying to get some real developer tools on my box using yum. The first problem was that php was failing with the following error:

PHP Warning: Module 'modulename' already loaded in Unknown on line 0

As it turns out that means that the xls package was included in the binary, and also being declared as a dynamic package. So, to fix this I commented out the following line in the /etc/php.d/xsl.ini:

;extension=xsl.so

Now on to yum itself. Doing any kind of yum update resulted in the following error:

Error: Missing Dependency: glibc-common = 2.3.4-2.36 is needed by package glibc-dummy-centos-4

After doing a bit of research, I found that the dummy-centos-4 package isn't really necessary if you're going to be upgrading your gcc libraries anyways so away it goes.

yum remove glibc-dummy-centos-4

After that I ran a full yum upgrade which worked just fine.

Stripping Accennts From Text With PHP

Most of the PHP string functions don't really work with UTF-8 encoded strings (http://bugs.php.net/bug.php?id=35520). I found this post on the Symfony forums that had a solution.

$text = iconv('UTF-8', 'ASCII//TRANSLIT', $text);

Done and done.