Development Notebook

Find android branch names

gives the following output

# posted by John : 2:30 PM  0 comments

Modifying udev on Ubuntu so that an unpriveleged user can use Android adb on a physical Android device:

If you need to check out all permissions for all USB devices:

For Kindle Fire:

# posted by John : 8:51 AM  0 comments

Labels: tightvnc, ubuntu, vnc

# posted by John : 11:23 AM  0 comments

#!/bin/bash
view=$1
shift
while [[ -n "$1" && "$1" != "rsync" ]]; do
   shift
done
/usr/atria/bin/cleartool setview -exec "$*" $view

# posted by John : 2:37 PM  0 comments

C# Beautified Menu Entries

There are not many examples of how to do things in C# in a beautiful way. Even the O'Reilly examples are sometimes pretty crufty. Here's an example of how to create an entire menu, including submenus without any goofy placeholder variables.

  public void CreateMenus() {
            MenuStrip menu = new MenuStrip();
            menu.Items.AddRange( new ToolStripItem[]{
                new ToolStripMenuItem("&File", null,
                new ToolStripMenuItem("&Close", null, new EventHandler(CloseMenu_Click)),
                new ToolStripMenuItem("E&xit", null, new EventHandler(ExitMenu_Click)))
                ,
                new ToolStripMenuItem("&Edit", null,
                new ToolStripMenuItem("&New Thing", null, new EventHandler(EditNewThingMenu_Click)))
                ,
                new ToolStripMenuItem("&Pen", null,
                new ToolStripMenuItem("&Pencil", null, new EventHandler(PenMenu_Click)),
                new ToolStripMenuItem("Bl&ack Pen", null, new EventHandler(PenMenu_Click)),
                new ToolStripMenuItem("Bl&ue Pen", null, new EventHandler(PenMenu_Click)),
                new ToolStripMenuItem("Eraser", null, new EventHandler(PenMenu_Click)))
            });
            foreach( ToolStripItem i in menu.Items)
                i.Font = Global.MenuFont;
            Global.ExplorerForm.MainMenuStrip = menu;
  }

# posted by John : 10:30 PM  0 comments

.NET PrintPreviewDialog very slow

I was having a problem with PrintPreviewDialog.ShowDialog() taking 10s of seconds to show any output. I did a single step from the ShowDialog() line and none of my code was in the way -- it took ~10 seconds to get to the first line of my PrintPageEventHandler. After some googling, I tried changing default printers from my network printer to PDFCreator and voila, proplem solved.

So the moral of the story is that if PrintPreviewDialog.ShowDialog() spends an inordinate amount of time just getting to your print routines, it's probably got something to do with the Windows print driver and not your code.

# posted by John : 8:08 AM  0 comments

Setting Credentials of your Crystal Reports using your ConnectionString

public static void CrystalReportLogin(CrystalDecisions.CrystalReports.Engine.Tables tables) {
    CrystalDecisions.Shared.TableLogOnInfo logOnInfo = new CrystalDecisions.Shared.TableLogOnInfo();
    foreach( string s in System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"].Split(';')) {
        string[]    nv    = s.Split('=');
        switch(nv[0]) {
            case "Password":        logOnInfo.ConnectionInfo.Password     = nv[1]; break;
            case "User ID":         logOnInfo.ConnectionInfo.UserID       = nv[1]; break;
            case "Initial Catalog": logOnInfo.ConnectionInfo.DatabaseName = nv[1]; break;
            case "Data Source":     logOnInfo.ConnectionInfo.ServerName   = nv[1]; break;
        }
    }
    foreach( CrystalDecisions.CrystalReports.Engine.Table table in tables)
        table.ApplyLogOnInfo(logOnInfo);
}

reportDocument1.Load(@"C:\Projects\Reports\CrystalReport1.rpt");
Global.CrystalReportLogin(reportDocument1.Database.Tables);
CrystalReportViewer1.ReportSource = reportDocument1;

# posted by John : 3:31 PM

NUnit - quick and easy

I searched for a quick and easy introduction to NUnit. There are some nice articles, but they all go into more detail than I want. I just want to take a look at something simple to see what all the fuss is about.

So, here's the smallest introduction to NUnit 2.2 you'll find. Hopefully after you've gone through this procedure you'll be able to see where you can use NUnit in your own projects. You'll then be ready to look at the more complex articles referenced at the end of this one.

Assumptions

• You are using Visual Studio.NET. The version of VS.NET shouldn't matter


• You're using C#. The code is so simple that programmers of other .NET languanges should be able to understand it


• You install NUnit in it's default directory.
  

The Procedure

1. Download and install NUnit. This article was based on NUnit-2.2.0.


2. Start Visual Studio.NET


3. Create a blank solution.


4. Within your blank solution, create a new project called "NUnitTesting".


5. Within the "NUnitTesting" project, right click "References", then click on "Add Reference" in the context menu.


6. Click the Browse button.


7. Navigate to C:\Program Files\NUnit 2.2\bin


8. Doubleclick nunit.framework.dll


9. Click OK. You have just added the NUnit framework to your project.


10. Modify the Class1.cs file so that it looks like this:

    
    using System;
    using NUnit.Framework;
    
    namespace NUnitTesting{
        public class CalcInt{
            public int add(int a,int b){
                return a+b;
            }
        }
    
        [TestFixture]
        public class CalcIntTestFixture{
            CalcInt   testCalcInt;
    
            [SetUp]   public void Init(){
                testCalcInt    = new CalcInt();
            }
    
            [Test]    public void AddSuccess(){
                Assert.AreEqual(2,testCalcInt.add(1,1));
            }
    
            [Test]    public void AddFails(){
                Assert.AreEqual(3,testCalcInt.add(1,1));    // FAILS, 1+1 != 3
            }
        }
    }



11. Press Shift-Control-B to save/compile the dll


12. Start->All Programs->NUnit 2.2->NUnit-GUI


13. File->Open


14. Navigate to the DLL that was created when you compiled 3 steps ago, and open it.


15. Click on the Run button.


16. One test should succeed, and one should fail -- hopefully the tests are simple enough to not need explanation.


17. That's it! There is a lot more to learn about NUnit, but this article should give you some tools to get started.

Resources

• NUnit documentation - http://www.nunit.org/documentation.html
  
• Test Driven Development using NUnit in C# - http://aspnet.4guysfromrolla.com/articles/011905-1.aspx
  

# posted by John : 10:55 PM  0 comments

Reading your Outlook Inbox from C# using OleDbDataAdapter

  private void ListInbox()
  {
   string  Mailbox    = "Inbox";
   string  Provider   = "Microsoft.Jet.OLEDB.4.0;Outlook 9.0";
   string  MAPILEVEL   = "Mailbox - Lastname, Firstname";
   string  PROFILE    = "Lastname, Firstname";
   string  TABLETYPE   = "0";
   string  DATABASE   = @"c:\temp";
   DataSet  ds     = new DataSet();
   DataTable dt     = new DataTable();

   string  sql     = string.Format(@"SELECT * FROM {0}", Mailbox);
   string  ConnectionString = string.Format(
    @"Provider={0};MAPILEVEL={1}|;PROFILE={2};TABLETYPE={3};DATABASE={4}",
    Provider, MAPILEVEL, PROFILE, TABLETYPE, DATABASE);
   try
   {
    OleDbDataAdapter da  = new OleDbDataAdapter( sql, ConnectionString );
    da.Fill(ds,"Outlook");
    dt      = ds.Tables["Outlook"];
    dataGrid1.DataSource = dt;
   }
   catch (Exception ex)
   {
    MessageBox.Show("Error: "+ex.Message);
   }
  }

# posted by John : 10:55 AM  0 comments

Allow the UI to catch up on a windows forms app

# posted by John : 10:49 AM  0 comments

How to hide null ASP.NET data fields

Symptoms: <%# DataBinder.Eval(Container.DataItem, "Symptoms") %>

<div class="hide" id="SymptomsDiv">
Symptoms:
<span id="SymptomsSpan"><%# DataBinder.Eval(Container.DataItem, "Symptoms") %></span>
</div>

<style type="text/css">
.hide{display: none;}
.show{display: block;}
</style>

<script>
function sectionObjects(name){
 o  = new Object;
 o.name = name;
 o.div = document.getElementById(name+"Div");
 o.span = document.getElementById(name+"Span");
 return o;
}
window.onload = function(){
 var sections = new Array;
 sections.push(sectionObjects("Symptoms"));
 
 // Show those sections that have data
 for(var i = 0; i<sections.length; i++)
  if (sections[i].span.innerHTML!="")
   sections[i].div.className = "show";
}
</script>

# posted by John : 1:33 PM  0 comments

An app specific bookmarklet that shows known hidden frames

# posted by John : 11:28 AM  0 comments

ASP.NET Response.TransmitFile() sometimes fails with networked UNC files

Response.TransmitFile(filename);

Stream     s          = new FileStream( filename, FileMode.Open, FileAccess.Read );
const int  bufLength  = 1024;
byte[]     buf        = new byte[bufLength];
int        red;
while( (red=s.Read(buf,0,bufLength))>0 )
   if (Response.IsClientConnected)
      Response.BinaryWrite(buf);
Response.Flush();
Response.Close();
s.Close();

# posted by John : 9:07 AM  2 comments

CacheDependency Limitation

As of ASP.NET 1.1, it looks like you can only get an ASP.NET cache item
to be dependent on about about 40 remote directories or so, then you'll run
into an arbitrary limitation of the ReadDirectoryChangesW win32 api
call. The exception generated will look something like this:

Failed to start monitoring changes to '\\Your\remote\directory'.

I doubt that this will be fixed in ASP.NET 2.0, since it is really a
limitation of the underlying OS.

This issue is especially ugly when you have to monitor a large number
of directories, such as an entire directory tree. It would be
nice if CacheDependency would allow you to monitor a deep directory --
that is, monitor if any changes were made to any file within an entire
tree structure. My guess is that this is just something the OS
does -- it would be a nice addition.

Supporting URLs:

# posted by John : 10:45 AM  0 comments

Calling a server side func in JavaScript with document.createElement('script')

CAUTION: THIS DOESN'T SEEM TO WORK ALL THE TIME.  I'VE GONE BACK TO THE HIDDEN IFRAME TECHNIQUE

The following bit of JavaScript and C# code work to gether to do
some remote scripting from the browser to the server.  Basically
some javascript function running on the client wants to call the
'ServerFunc' C# code, and pass it a single parameter named "user".

See:

• http://www.htmlcodetutorial.com/help/archive.php/o_t__t_1288__ie6-can-t-load-dynamic-and-ltscript-and-gt-element-s-src-url.html
• http://dojo.jot.com/RemoteScriptingRevisited

// Within a javascript function that wants to call the server:
ServerCall("ServerFunc&user="+User);
// The ServerCall function calls a function in the MYPAGE.aspx on the server.
function ServerCall(call){
       var head      = document.getElementsByTagName("head")[0];
       var script    = document.createElement('script');
       script.src    = "MYPAGE.aspx?nocache="+new Date().getTime()+"&cmd="+call;
       //alert(script.src);
       script.type   = 'text/javascript';
       head.appendChild(script);
}
NOTE: The rest is C# code in the aspx. If you're not into C#, replace this with whatever you like. The ServerCall() bits should still work.
// Within MYPAGE.aspx’s Page_Load(), we find the desired function and call it.
// Long live reflection
private void Page_Load(object sender, System.EventArgs e){
       // Find and execute the command
       MethodInfo m = GetType().GetMethod("page"+Request["cmd"]);
       if (m==null)
              m = GetType().GetMethod("pageDefault");
       m.Invoke(this,null);
}
// the m.Invoke() in Page_Load() calls this function.  Note, we prepend each page
// function with the word 'page' -- this way baddies can't run arbitrary funcs
public void pageServerFunc(){
       string user = Request["user"]; // This came from the client
       
       Script.Append("alert('You can do anything in here');");
       Script.Append("SomeClientFunc('Then call a client func to wrap up!');");
       Response.Write(script.ToString());
       Response.Flush();
       Response.Close();
}StringBuilder script = new StringBuilder();

# posted by John : 8:32 PM  0 comments

How to use ldapsearch...

# posted by John : 3:34 PM

Converting a file to/from hex using Perl

# posted by John : 3:18 PM

Hacking the D3 Executable

Ok, here's the problem. D3's filesystem osfi is set to create files with 660 permissions (rw ower, rw group, nothing other). This is secure, but if you want to create files that will work for other users, you have to then go in and change the permissions. And if you have a boat load of software that doesn't do this, then it just doesn't work out well. What you'd really like to do is create all files with 777 (rwx for everybody) and let the umask mask out the unwanted bits (umask of 117 will give you the original result).

At first, this seemed easy, Raining Data gives you the source to rp_driverux.c. But alas, they don't give you the rp_driverux.h source, so you can't compile it. And in our special circumstance, we can't build coff files anyway. So I was left with the second alternative -- using a binary editor to change the executable code. The rest of this howto details how I did it.

Within /usr/lib/pick/rp_driverux.c you'll find:

static int
rp_upditm( long fd, rp_hdr *hd, unsigned char *buf, int length )
{
    int            code = -1;
    unsigned char *p, *q;
    int            localfd;
    localfd = RP_FDNUM(fd) - 1;     /* Translate FD into table index */
. . .
        /* Go open it */
        if ((code = rp_retixux(localfd,O_WRONLY | O_TRUNC | O_CREAT,0660)) < 0)
        {
            hd->rp_rtncd = code;
            return code;
        }
. . .
}

The code=rp_retixux... line contains the permissions, 0660. This is the trouble spot. To find this in the actual d3 executable is pretty simple. (Note: there is probably a better way, but this worked for me).

First step is to disassemble the d3 executable into a file: dis /usr/bin/d3 > /tmp/d3.dis

This d3.dis file can now be examined. We know that we're looking for a function named rp_upditm, so just vi the file and search for it. For me, it looked something like this:

rp_upditm()
        8054ed8:  e9 79 03 00 00      jmp    0x379 <8055256>
        8054edd:  90                  nop
        8054ede:  c7 45 fc ff ff ff ff movl   $0xffffffff,-4(%ebp)
        8054ee5:  8b 45 08            movl   8(%ebp),%eax
        8054ee8:  25 ff ff 00 00      andl   $0xffff,%eax
        8054eed:  48                  decl   %eax
        8054eee:  89 45 f0            movl   %eax,-16(%ebp)
. . .

Now, search for 1b0 (which is 0660 in hex). Voila, you found the code:

. . .
        805504d:  ff 48 08            decl   8(%eax)
        8055050:  68 b0 01 00 00      pushl  $0x1b0
        8055055:  68 01 03 00 00      pushl  $0x301
...
(NOTE: I showed the line before and after too)

The pushl $0x1b0 is the push of the 0660 onto the stack for the call to rp_retixux(). Now all we need to do is change the 0660 to 0777 (1b0 to 1ff). To do that, we need the offset. I could have probably figured it out using the address (0x8055050), but I decided just to search for it since I had the object code available. To do that, I did "od -x d3 > d3.od" to create a hex dump of the file, then I did a grep for "b068". Here's the output I got:

# grep "b068" d3.od
0025760  0000 b068 12c5 e808 71d4 000c 6859 c1f4
0043260  0812 b068 12cd ff08 6835 12c3 6a08 e800
0044360  b068 12ce 6808 dcec 0814 b9e8 0ba5 8300
0046100  b068 0003 ff00 7c35 12c3 a108 c850 0815
0056420  1de9 0001 9000 b068 0003 6a00 a105 c850
0056560  5900 016a 37e8 0cba 5900 b068 0003 ff00
0056720  b068 0003 a100 c850 0815 000d 0000 5080
0072260  31eb b068 04f4 6a08 e805 a22a 000c c483
0074600  0f6a 11e8 ffff 83ff 0cc4 b068 04f4 6808
0150120  b068 0001 6800 0301 0000 75ff e8f0 101e
0566300  cde8 0995 8300 10c4 c085 0b7d b068 1322
1127720  038b c085 0d74 b068 1552 e808 0a10 0000
1142660  c483 eb10 8325 00c7 b068 1559 0f08 07bf
1227600  ac15 1361 e808 1366 0000 b068 156b 6808
1363440  4875 94a3 1612 eb08 836d 00c7 b068 1579
1477540  c35d 9090 b068 13df e808 d526 ffff c483
1514440  47f8 088b f93b 847e b068 13e8 e808 bb62
3367300  b85f 0001 0000 e58b c35d 9090 b068 1526

Looking through you'll find the one we want is at 0150120. A couple of things to remember: this is a sco machine so the bytes are switched in words (16 bit). Also, you need the context of the object code around it (from the assembly listing) to distinguish the correct line. Also remember, the offset is in octal (0150120 = 0xd050). For awhile I thought it was decimal which threw me off a bit.

Now that you have the offset of the change and the change to make, you just need to make it. You could write a C program to do it, but I just found myself a hex editor and used it. I copied the d3 exec to my laptop and used frhed to modify it. Then I sent it back.

# posted by John : 4:03 PM

How to do a HTTP request with authentication by hand:

1. Let's say your user:pass is fred:supersecret
   
2. /bin/echo -n "fred:supersecret" > /tmp/x
   
3. uuencode -m /tmp/x /tmp/y
   You'll get:
   begin-base64 644 /tmp/y
   ZnJlZDpzdXBlcnNlY3JldA==
   ====
   
4. Copy the ZnJIZ... string (including the == at the end) to your cut buffer. This is your uuencoded user:password.
   
5. telnet ip.or.host 80
   
6. Type in: GET /path/to/file.html HTTP/1.0
   
7. Optionally type in: HOST: www.yourserver.com
   
8. Type in: Authorization: BASIC ZnJlZDpzdXBlcnNlY3JldA==
   
9. Type in: A Blank line
   
10. You should get the output web page now.
    

# posted by John : 11:44 PM

How to upgrade Red Hat 8.0's apache RPMs to the latest Apache release

1. rpm -i /rhs80.2/SRPMS/httpd-2.0.40-8.src.rpm
   Install the Apache source RPM. Ignore the warning. You may need to get the src.rpm file from the CD directly.
   
2. cd /usr/src/redhat
   Go to the Red Hat sources directory
   
3. wget http://apache.oregonstate.edu/httpd/httpd-2.0.44.tar.gz
   Get the latest version of Apache. Go to www.apache.org and follow the download link.
   
4. http://httpd.apache.org/dev/verification.html
   Read this tedious set of gpg instructions about how and why you should verify the code. Ho hum.
   
5. mv httpd-* SOURCES
   Move the source you just downloaded into the SOURCES directory
   
6. vi SPECS/httpd.spec
   Make the following changes:
   
   
   
   • Version: 2.0.40 -> 2.0.44
     
   • Release: 8 -> jl1
     
   • Comment out the line that says %patch3 -p0 -b .sslink
     
   • Comment out the line that says %patch40 -p0 -b .cnfdir
     
   • Comment out the section that has the comment "fix man page paths"
     
   • Change all occurances of "libapr\." to "libapr-0\."
     
   • Change all occurances of "libaprutil\." to "libaprutil-0\."
     
   • Comment out the line that says %{_mandir}/man8/apachectl*.
     
   • Comment out the line that says %{_mandir}/man8/httpd*.
     
   • Find the line that reads: "--enable-deflate \". Add a line after it that reads: " --with-ldap --enable-ldap --enable-auth-ldap \". The tab before the "--enable" and the backslash after the end are very important.
     
   • Add a changelog entry
     
   • And here's the diff:
     

     
     7,8c7,8
     < Version: 2.0.40
     < Release: 8
     ---
     > Version: 2.0.44
     > Release: cli1
     90c90
     < %patch3 -p0 -b .sslink
     ---
     > #%patch3 -p0 -b .sslink
     92c92
     < %patch40 -p0 -b .cnfdir
     ---
     > #%patch40 -p0 -b .cnfdir
     127a128
     >       --with-ldap --enable-ldap --enable-auth-ldap 225,232c226,233
     < sed -e "s|/usr/local/apache2/conf/httpd.conf|/etc/httpd/conf/httpd.conf|" 
     <     -e "s|/usr/local/apache2/conf/mime.types|/etc/mime.types|" 
     <     -e "s|/usr/local/apache2/conf/magic|/etc/httpd/conf/magic|" 
     <     -e "s|/usr/local/apache2/logs/error_log|/var/log/httpd/error_log|" 
     <     -e "s|/usr/local/apache2/logs/access_log|/var/log/httpd/access_log|" 
     <     -e "s|/usr/local/apache2/logs/httpd.pid|/var/run/httpd.pid|" 
     <     -e "s|/usr/local/apache2|/etc/httpd|" < docs/man/httpd.8 
     <   > $RPM_BUILD_ROOT%{_mandir}/man8/httpd.8
     ---
     > #sed -e "s|/usr/local/apache2/conf/httpd.conf|/etc/httpd/conf/httpd.conf|"
     > #    -e "s|/usr/local/apache2/conf/mime.types|/etc/mime.types|" 
     > #    -e "s|/usr/local/apache2/conf/magic|/etc/httpd/conf/magic|" 
     > #    -e "s|/usr/local/apache2/logs/error_log|/var/log/httpd/error_log|" 
     > #    -e "s|/usr/local/apache2/logs/access_log|/var/log/httpd/access_log|" 
     > #    -e "s|/usr/local/apache2/logs/httpd.pid|/var/run/httpd.pid|" 
     > #    -e "s|/usr/local/apache2|/etc/httpd|" < docs/man/httpd.8 
     > #  > $RPM_BUILD_ROOT%{_mandir}/man8/httpd.8
     308,309c309,310
     < %{_libdir}/libapr.so.*
     < %{_libdir}/libaprutil.so.*
     ---
     > %{_libdir}/libapr-0.so.*
     > %{_libdir}/libaprutil-0.so.*
     336,337c337,338
     < %{_mandir}/man8/apachectl*
     < %{_mandir}/man8/httpd*
     ---
     > #%{_mandir}/man8/apachectl*
     > #%{_mandir}/man8/httpd*
     359,360c360,361
     < %{_libdir}/libapr.so
     < %{_libdir}/libaprutil.so
     ---
     > %{_libdir}/libapr-0.so
     > %{_libdir}/libaprutil-0.so
     369a371,373
     > * Fri Mar 14 2003 John Lombardo  2.0.44-cli-1
     > - Make it work with Apache 2.0.44 (so we get mod_auth_ldap)
     > 
     

   
   
7. rpmbuild -ba SPECS/httpd.spec
   Finally, you can build the bugger. This will take a few minutes, even on a fast machine. Pay attention to the last thing it says. If it worked it should tell you about your new RPMs, if not, the final few (50 or so) lines will probably tell you where it went wrong.
   
8. You should now have the following new files:
   
   
   
   • SRPMS/httpd-2.0.44-cli1.src.rpm
     
   • RPMS/i386/httpd-2.0.44-cli1.i386.rpm
     
   • RPMS/i386/httpd-devel-2.0.44-cli1.i386.rpm
     
   • RPMS/i386/httpd-manual-2.0.44-cli1.i386.rpm
     
   • RPMS/i386/mod_ssl-2.0.44-cli1.i386.rpm
     
   
   

# posted by John : 5:24 PM

How to send email w/o a mail client

# posted by John : 3:06 PM

#

# My Fabulous private schema

#

# OIDS:

#   iso.org.dod.internet.private.enterprise.me.myclient.ldap.attributetype

#     1   3   6        1       4          1       15823   1    1             1

#   iso.org.dod.internet.private.enterprise.me.myclient.ldap.objectclass

#     1   3   6        1       4          1       15823   1    1           2

#

# Created by: John Lombardo <JohnLombardo@acm.org>

#

 

# Attribute Type Definitions

 

attributetype ( 1.3.6.1.4.1.15823.1.1.1.1 NAME 'SSHPublicKey'

        DESC 'Public key for ssh'

        EQUALITY caseExactIA5Match

        SYNTAX 1.3.6.1.4.1.1466.115.121.1.15

        SINGLE-VALUE )

 

attributetype ( 1.3.6.1.4.1.15823.1.1.1.2 NAME 'DBHost'

        DESC 'Which DB server does this user use.'

        EQUALITY caseIgnoreIA5Match

        SYNTAX 1.3.6.1.4.1.1466.115.121.1.44

        SINGLE-VALUE )

 

# Object Class Definitions

 

objectclass ( 1.3.6.1.4.1.15823.1.1.2.1 NAME 'CliUser'

        DESC 'CliUser' SUP top AUXILIARY

        MUST ( uid )

        MAY ( SSHPublicKey $ D3Host )

        )

# posted by John : 1:52 PM  0 comments

This is about a month old, but it bears blogging: The IANA has assigned the following Private Enterprise Number to LinuxWithin.com: 15823

The prefix is: iso.org.dod.internet.private.enterprise (1.3.6.1.4.1)

I'm assigning the .1 sub-code for use at my customer.

# posted by John : 1:00 PM  0 comments

One more thing about the email server; I wanted to try my email list test again (send an email to a test list of 50 test users). So I changed the loglevel-send back to 127. When I sent to the test list, I had troubles. After I changed the loglevel-send back to nothing (file exists, but is empty), my list went through with no trouble. Hmmm, seems that having a loglevel can muck things up a bit.

One other thing: when I restarted with the message in the queue, I got double entries in my test users email accounts for the same message. Yuck.

Here's the command line for showing what's in the test email boxes:

for i in `awk 'BEGIN{for(i=0;i<=49;i++)print i}'`;do /bin/echo -n "$i ";ls test$i/Maildir/new;done

# posted by John : 5:49 PM  0 comments

Well, that (see yesterdays blog) didn't work. I got a call from the admin this morning that email didn't work, and sure enough it was not delivering mail at all. I undid the change to /var/qmail/control/ldaptimeout and restarted. It took about 5 restarts ((vi /etc/inittab; kill -HUP 1)*2), but eventually it got through the whole deliver queue. The problem still remained of why was this happening. One clue was found by setting /var/qmail/control/loglevel-send to 127 and restarting. I would get something like exhibit 1, except the "success" time was a minute and a half later than the "executing..." time.

The other big clue was that "top" on the openldap server box showed slapd pegged at close to 100% of the cpu. This told me that OpenLDAP was too busy.

Upon further examination of exhibit 1, I noticed that the mailAlternateAddress was being searched every time. The "mail" field is indexed by default, but the mailAlternateAddress was not indexed. I changed the /etc/openldap/slapd file on the OpenLDAP server by adding the line index mailAlternateAddress eq, and that seems to have fixed everything up quite nicely.

Along the way, I developed two useful utilities for looking at the logs; delivery and deliveries. Delivery's output is shown in exhibit 1. It shows all the information about a specific delivery. The source is in exhibit 2. Deliveries simply shows multiple deliveries. It's source is in exhibit 3.

Exhibit 1

[root@mail qmail]# ./delivery 42 2003-02-25 15:48:18.344906500 starting delivery 42: msg 451289 to local eddie@client.net 2003-02-25 15:48:18.402715500 delivery 42: log: LOGLEVEL_set_to_127/ 2003-02-25 15:48:18.402858500 delivery 42: log: mailaddr:_eddie@client.net/ 2003-02-25 15:48:18.422529500 delivery 42: log: ldapfilter:_'(|(mail=eddie@client.net) ... (mailAlternateAddress=eddie@client.net))'/ 2003-02-25 15:48:18.431933500 delivery 42: log: ldap_get_userinfo:_qmailUID:_ 2003-02-25 15:48:18.432307500 delivery 42: log: 508_(default)/ 2003-02-25 15:48:18.435458500 delivery 42: log: homeDirectory=/u/eddie_(from_server)/ { SOME INFORMATION SKIPPED FOR SPACE } 2003-02-25 15:48:18.439944500 delivery 42: log: found:_user='eddie'_uid=508_gid=508_... homedir='/u/eddie'_mms='/u/eddie/Maildir/'_... host='mail.client.com'_status=-1/ 2003-02-25 15:48:18.441235500 delivery 42: log: executing_'qmail-local_--_eddie_/u/eddie_... eddie@client.net_ann@abc.com_... /u/eddie/Maildir/'_under_uid=508,_gid=508/ 2003-02-25 15:48:18.604907500 delivery 42: success: did_1+0+0/

Exhibit 2: delivery

#!/bin/sh CAT="@* current" cat $CAT | grep "delivery $1:" | /command/tai64nlocal

Exhibit 3: deliveries

#!/bin/sh START=$1 FINI=$2 if [ -z "$START" ]; then echo "$0 usage:" echo "$0 r1 {r2}" echo "if r2 is not given, then deliveries 1-r1 are shown, else" echo "deliveries r1-r2 are shown" exit 1 fi if [ -z "$FINI" ]; then FINI=$START START=1 fi for i in `awk 'BEGIN{for(i='$START';i<='$FINI';i++)print i;}'`;do clear ./delivery $i /bin/echo -n "continue: " read x done

# posted by John : 4:49 PM  0 comments

Hi. This is the qmail-send program at mail.client.com.

I'm afraid I wasn't able to deliver your message to the following

addresses.

This is a permanent error; I've given up. Sorry it didn't work out.



:

Sorry, no mailbox here by that name. (#5.1.1)



--- Below this line is a copy of the message.

...

# posted by John : 9:18 PM  0 comments

• loglevel-pop3d 64 for debug
  
• loglevel-smtpd 64 for debug
  
• loglevel-send 64 for debug. This one is for local and remote deliverys.
  

@400000003e56be0628768734 starting delivery 54492: msg 450906 to local fred@client.net

@400000003e56be65359844ac delivery 54492: failure: Sorry,_no_mailbox_here_by_that_name._(#5.1.1)/

# posted by John : 5:47 PM  0 comments

	try{

		CHLReferenceNumber = node.Attributes["CHLReferenceNumber"].Value;

	} catch( Exception e){

		throw new Exception(" get error: "+e.Message);

	}

	node = xml.DocumentElement.SelectSingleNode("//EQUAL_RESPONSE_QUERY");

	try {

		node.Attributes["CHLReferenceNumber"].Value = CHLReferenceNumber;

	} catch (Exception){

		throw new Exception(" set error");

	}

# posted by John : 2:29 PM  0 comments

• Your programs are so easy to read. No more mucking about with pointers and stuff, you just say want you want and the computer figures out the hard bits. As A die-hard programmer from way back (1983 -- no, not way way back, but way back enough), it's hard for me to admit it -- but I really don't like fooling around with pointers and memory anymore. Sure it's fun to write the loops that move strings from here to there a char at a time, but after you've done it once...
  
• I really like the #region stuff. Ok, who invented it -- or did it really come from Microsoft?
  
• More coming...
  

# posted by John : 5:37 PM  0 comments