Adventures in C# on Mono

posted 5 Dec 2014, 08:56 by Owen Brotherwood   [ updated 8 Dec 2014, 03:40 ]

Well, it is just Java in new clothes ...

using System;
using Ipcollector.Dialect;
using System.Net.Sockets;
using System.Net;

namespace IPcollector
    class MainClass
        public static void Main (string[] args)
            // very basic input to get the job done
            String ipAddress = args [0];
            String port = args [1]; 
            String hostName = args [2];
            String hostState = args [3];
            String attrKey = args [4];
            String attrValue = args [5];

            Int32 unixTimestamp = (Int32)(DateTime.UtcNow.Subtract (new DateTime (1970, 1, 1))).TotalSeconds;

            // no error checking for now
            IPEndPoint ipEndPoint = new IPEndPoint (IPAddress.Parse (ipAddress), int.Parse (port));
            Socket socket = new Socket (AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            socket.Connect (ipEndPoint);
            NetworkStream networkStream = new NetworkStream (socket, true);

            // build a very basic event
            ExternalEvent externalEvent = new ExternalEvent ();
            externalEvent.event_type = ExternalEvent.EventType.HOST;
            externalEvent.HostEvent.HostName = hostName;
            externalEvent.MessageId = unixTimestamp;
            String hostStateUpper = hostState.ToUpper();
            switch (hostStateUpper) {
            case "UP": 
                externalEvent.HostEvent.host_state = ExternalEvent.ExternalHostEvent.HostState.UP;
            case "DOWN":
                externalEvent.HostEvent.host_state = ExternalEvent.ExternalHostEvent.HostState.DOWN;
            case "UNREACHABLE":
                externalEvent.HostEvent.host_state = ExternalEvent.ExternalHostEvent.HostState.UNREACHABLE;
            ExternalEvent.ExternalAttribute externalAttribute = new ExternalEvent.ExternalAttribute ();
            externalAttribute.Key = attrKey;
            externalAttribute.Value = attrValue;
            externalEvent.HostEvent.Attribute.Add (externalAttribute);

            // send event
            ExternalEvent.Serialize (networkStream, externalEvent);


posted 1 Dec 2012, 11:21 by Owen Brotherwood

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Android and Ubuntu

posted 19 Nov 2012, 12:22 by Owen Brotherwood

Hmm, got to write some notes.
Do not use Open JDK: download Java 6 binary.

Manually Install Oracle JDK 6 for Ubuntu 12.10
Tags: support, Ubuntu
These are my notes for 12.04 updated for Ubuntu 12.10. The process I used for 12.04 works the same for 12.10.

Most installation notes refer to the no longer available sun-java6-jdk or an individual ppm, but these notes are for manually installing the downloaded files from Oracle. I'm referring to JDK6, but you could substitute JDK7 if that's what you need.

Download Java SE 6 JDK for Linux x86 self-extracting binary
At the time of writing, the file I'm using is jdk-6u37-linux-i586.bin, but the filename will change as updates are released.
From the download folder, make the file executable
chmod a+x jdk-6u37-linux-i586.bin
Apparently there isn't a jvm folder anymore, so create one.
sudo mkdir /usr/lib/jvm
Move the file to the jvm folder
sudo mv jdk-6u37-linux-i586.bin /usr/lib/jvm/
Change to the jvm folder and run the self-extracting binary
cd /usr/lib/jvm
sudo ./jdk-6u37-linux-i586.bin
Everything will be extracted to a new jdk1.6.0_37 folder and you can delete the .bin file now.
Make symbolic links to the new java binary.
sudo ln -s -b /usr/lib/jvm/jdk1.6.0_37/jre/bin/java /etc/alternatives/java
sudo ln -s -b /usr/lib/jvm/jdk1.6.0_37/jre/bin/java /usr/bin/java
Double-check the version
java -version
Now you can easily update and switch between JDK versions directly from the source.

Get the SDK: I just got the bundle @
android create project --target 1 --name MyAndroidApp  --path ./MyAndroidAppProject  --activity MyAndroidAppActivity  --package com.example.myandroid

ant debug
android avd
adb -install <apk>

Carrier IQ

posted 5 Dec 2011, 11:49 by Owen Brotherwood   [ updated 5 Dec 2011, 11:57 ]

Don't know about Carrier IQ? 
- read about Carrier IQ and come back

This pre-Christmas revelation is getting messy.
Once upon a time, some guy got an idea. Other guys worked long nights on the idea, with success and failures, but "eureka". Then marketing, and the selling of the idea to the manufactures. 

After various design and/or other decisions, the lawyers are now out front with jobs and dreams at stake.

How to disable Carrier IQ
Apple allows opt out of sending diagnostics data, 

- who knows, not "standard" across platform/hardware suppliers

Android Certificates

posted 1 Dec 2011, 13:45 by Owen Brotherwood

Android, hmm, well sometimes y have to import certificates

Root, Intermediate or Server: Base64 X.509 and name it with extension .crt
Personal: PKCS#12 and name it with extension .p12

Send them by mail, and click on attachment...

For joining a wireless network, use anonymous identity.

Tested on Galaxy Tab

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