Download Sanhinda for iPhone by Me

Download Sanhinda for Android by Dulan

Sanhinda (සන්හිඳ) featured in iTunes Sri Lanka within 3 days of its initial release. Below is a few screenshots of it having top ranks in AppStore Sri Lanka.

#1 Free iPhone App in Sri Lanka

#1 Free iPhone App in Utilities Sri Lanka

Following is a little screen demo of සන්හිඳ for iPhone..

Few screens of the සන්හිඳ for iPhone..

Few screens of සන්හිඳ for Android..

On Objective-C, we will extend NSData class and NSString class to have an AES128 encrypted string on iOS using categories. Basically, important AES128 Encryption code is listed below. But for easy reference, download NSData,NSString AES128 Categories from here. and add them to XCode project.

iOS Code

- (NSData *)AES128EncryptWithKey:(NSString *)key
{
// ‘key’ should be 16 bytes for AES128
char keyPtr[kCCKeySizeAES128 + 1]; // room for terminator (unused)
bzero( keyPtr, sizeof( keyPtr ) ); // fill with zeroes (for padding)

// fetch key data
[key getCString:keyPtr maxLength:sizeof( keyPtr ) encoding:NSUTF8StringEncoding];

NSUInteger dataLength = [self length];

//See the doc: For block ciphers, the output size will always be less than or
//equal to the input size plus the size of one block.
//That’s why we need to add the size of one block here
size_t bufferSize = dataLength + kCCBlockSizeAES128;
void *buffer = malloc( bufferSize );

size_t numBytesEncrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt( kCCEncrypt, kCCAlgorithmAES128, kCCOptionECBMode | kCCOptionPKCS7Padding,
keyPtr, kCCKeySizeAES128,
NULL /* initialization vector (optional) */,
[self bytes], dataLength, /* input */
buffer, bufferSize, /* output */
&numBytesEncrypted );
if( cryptStatus == kCCSuccess )
{
//the returned NSData takes ownership of the buffer and will free it on deallocation
return [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted];
}

free( buffer ); //free the buffer
return nil;
}

Now add the below PHP function at your server side to decrypt the text with PHP.

PHP Code

function decrypt_password($pass,$key)
{

$base64encoded_ciphertext = $pass;

$res_non = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, base64_decode($base64encoded_ciphertext), ‘ecb’);

$decrypted = $res_non;
$dec_s2 = strlen($decrypted);

$padding = ord($decrypted[$dec_s2-1]);
$decrypted = substr($decrypted, 0, -$padding);

return  $decrypted;
}

Earlier it used to be read from either ~/Library/Preferences/com.apple.Xcode.plist file Or using Address Book entry for company under current user logged in. So I was wondering why it doesn’t appear on new files I add to the project with XCode 4.2.

defaults write com.apple.Xcode PBXCustomTemplateMacroDefinitions
-dict ORGANIZATIONNAME "CyberLMJ"

I had already added the ORGANIZATIONNAME key, but still had the default name in. Alternatively, I could have also changed the file templates in /Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Templates/File Templates or /Developer/Library/Xcode/Templates/File Templates. But it seem to be not really easy or useful, as I just needed to change company name entry only.

Finally, I found out there’s a very easy way hidden or unseen for me for some reason with new XCode, added Select the project and look for the right pane. View > Utilities > Show File Inspector [option + command + 1]. Organization entry is there available for each new project.

Download iAvoidBlood on Apple Store

Blood App include three utilities named Evaluation (Animated Blood Calculator), eBlood Card & Blood Centers (Geo-Localization). In addition, App include detailed informative sections describing Blood (components of blood), Blood Transfusion, Transfusion Alternatives, Ethics and Glossary.

Evaluation utility – adds an animated calculation showing Final HT value calculated using patient or user’s Gender, Estimated Blood loss, Initial HT & Transfusion Threshold.

E-Blood Card – provides users to keep his preferences for accepting whole blood or its components. Users can share their e-blood card via emails.

Blood Centers – shows the nearest Blood Centers marked on a Google Map using iPhone Map Kit framework. Using Google Geo-coding API users are provided a way to search for nearest blood centers from any location. Data for the blood centers are read from silk web services. Even user could look for the route for Blood center and its details.

Transfusion Alternatives – provides comprehensive detailed section that describe the top to bottom details on Bloodless Medicine.

Following is a quick video of the Blood App.

Following are some screen shots for the app.

Siphon Project on Google Code

Siphon has wiki pages saying how it could compile to iPhone OS 2.x but still it seems to be not enough and I couldn’t make it success by any means unfortunately.

Steps to follow for Newbie.

1. We need to compile and build required libraries from compiling PJSIP project first. There are few things I did wrong here. I have compiled for Device and tried to run it on Simulator without writing my own configure script. Trying to use same one on PJSIP Then I got so many linking issues that I couldn’t understand WTF is this.

2. Let’s compile PJSIP for iPhone first and build libraries required and then to Simulator as well with a more change to configure script. Before going into Siphon project.

2-1. Download PJSIP source code from here. Now it includes configure script for iPhone that you need to edit once for iPhone again for Simulator.

svn co http://svn.pjsip.org/repos/pjproject/trunk pjproject

2-2. Create a new file pjlib/include/pj/config_site.h.  Add following code into it.

#define PJ_CONFIG_IPHONE 1
#include <pj/config_site_sample.h>

2-3. If you go to pjproject folder, you will see configure-iphone script. Need to edit this to compile for your desired iPhone SDK. Open this with your favorite Text editor, mine was TextWrangler.

$ edit configure-iphone

2-4. Hard code the $DEVPATH and $IPHONESDK. So you don’t need to export those environment variables. If you not specify $IPHONESDK it will be the OS default. ex.

DEVPATH=/Developer/Platforms/iPhoneOS.platform/Developer
IPHONESDK=iPhoneOS3.0.sdk

2-5. Now you can easily build the libraries that will be stored in lib directories of folders, pjlib, pjlib-util, pjmedia, pjnath, pjsip, third_party. Check once again about your configure-iphone script for correct paths and compile and build libraries using following commands simply.

$ cd /path/to/your/pjproject/dir
$ ./configure-iphone
$ make dep && make clean && make

2-6. Now you have libraries for iPhone. Make a copy of pjproject folder and rename it to pjproject_sim. Here we are going to have our iPhone Simulator libraries built

$ cd /path/to/your/pjproject_sim/dir
$ edit configure-iphone

2-7. Hard code the $DEVPATH and $IPHONESDK. This time they should the paths for Simulator SDKs. And one more change here, that I was missing. caused all sorts of problems.

2-8. Search for 'ls -d ${SDKPATH}/usr/lib/gcc/arm-apple-darwin*' in configure script and replace it with following that way you could build correct libraries for simulator.

ls -d ${SDKPATH}/usr/lib/gcc/i686-apple-darwin*

2-9. Great now you have all libraries needed in folders, pjproject and pjproject_sim.

3. Now let’s go and checkout siphon project.

svn checkout http://siphon.googlecode.com/svn/trunk/ siphon

4. There was a compilation issue in Siphon code, that you could ignore by doing a little trick, I don’t know whether its right or wrong. But it works perfect. Otherwise, project didn’t compile for me. Open Siphon2 folder iPhone project on iPhone then go to call.m. Search for PJSIP_CRED_DATA_MJ_DIGEST and replace it with PJSIP_CRED_DATA_DIGEST.

5. Now add all the library .a files in following folders to the project. pjlib, pjlib-util, pjmedia, pjnath, pjsip, third_party.

6. Now follow the screen shots carefully. If you build for simulator use simulator library files (pjproject_sim folder) and include files to library and header search paths, other wise use libraries & include files in pjproject folder.

Make a duplicate of Debug to run in iPhone, let debug to be used by used by simulator libraries.

Let’s add Library Search Paths & Header Search Paths for siphon target. Following are examples of my locations for simulator. For device its the location to pjproject folder we built and stored our library files for Device.

Change CYDIA=0 in Preprocessor Macros

7. Add the Settings Bundle for your project as given in this following link. It works perfect then.

Siphon and Settings Bundles

8. Now you could run it on your iPhone or Simulator. Use a free SIP service to create SIP accounts to test the app. I have used, Sip2Sip

NOTES ABOUT COMPILING “PJSIP”

Following link contains very useful information updated about how to get PJSIP compiled for iOS. Please refer to the pjproject Wiki page below.

Building for Apple iPhone, iPad and iPod Touch

* IMPORTANT: I had to follow additional step to get things done for iOS Simulator. before run ./configure-iphone script

export DEVPATH=/Developer/Platforms/iPhoneSimulator.platform/Developer
export CC=$DEVPATH/usr/bin/gcc
export CFLAGS="-O2 -m32 -miphoneos-version-min=3.0" LDFLAGS="-O2 -m32"

1. Create a file named .profile if it doesn’t already exists. Add the following line for that file.

alias ls='ls -G'

This will add higlighting when you use, ls commands to list files and directories, better than looking at black color all the time.

2. Do the following to add highlighting for vi editor.

:~ cd /usr/share/vim/
:~ sudo vim vimrc

Add the following code after the line with ‘set backspace=2′

set ai                  " auto indenting
set history=100         " keep 100 lines of history
set ruler               " show the cursor position
syntax on               " syntax highlighting
set hlsearch            " highlight the last searched term
filetype plugin on      " use the file type plugins

" When editing a file, always jump to the last cursor position
autocmd BufReadPost *
\ if ! exists("g:leave_my_cursor_position_alone") |
\ if line("'\"") > 0 && line ("'\"") <= line("$") |
\ exe "normal g'\"" |
\ endif |
\ endif

Save the file with Esc + :wq. Now your vi editor will show source files with some highlighting as well.

OK. Now it looks far better with some colors after this.

1. Login with iPhone Developer account in Safari Browser and start your download. In case you break the download, which would definately happen in a slow connection that takes around 10 – 12 hours to complete.

2. Once it’s broken Right click on broken download and click Show In Finder

3. You will see a file with ‘xcode_3-1.2.3_and_iphone_sdk_4x.dmg.download’ like some thing. Right click on that and click on ‘Show Package Contents’

4. Safari keeps a Info.plist file with download progress that is the one we are going to use for our purpose. Open it with a text editor and notice there’s key value pairs. Notice the key value pairs below.

<key>DownloadEntryIdentifier</key>

<string>551E5CEA-1FCF-414E-98AD-F0CFF5E05CEE</string>

<key>DownloadEntryProgressBytesSoFar</key>

<integer>192729290</integer>

5. Now you can’t resume this download, that has lots of bytes already downloaded.Do this to use the already downloaded file.

6. First start a new download again in Safari and stop it. Then again go to finder and ‘Show Package Contents’ of this new download.

7. Here also you will see an Info.plist file open it and copy the Download Entry Identifier value.

8. Hay now you are done, paste this to the old Info.plist file. Go to Safari you will see that your old download is now resuming. Saves a lot of time for you on a slow Internet Connection.

Have fun with XCode then.

1. Installing Tomcat - I have installed apache tomcat 6.0.24 exactly following same steps given in following article by Apple, eventhough it describes steps on installing 4.0.1 it is the same for later version of tomcat as well. It’s just a matter of downloading the tomcat distribution. You don’t need to complete the whole process. Just stop when you see tomcat up and running. I stopped my self at the end of ‘Starting and Stopping Tomcat’ section.

Java and Tomcat on Mac OS X

2. Install a text editor that can run from terminal (Optional). - Usually vi command is the preferred way of editing text files on Unix OSs. But for Mac OS X you should try with Text Wrangler. it has easy to install dmg file and after install Go to Menu TextWrangler -> InstallCommandLineTools… Now you can use ‘edit [filename]‘ from command line to open up text files you want to edit instead of using vi. This looks much pleasant when you edit files.

3. Setting up Environment Variables - $CATALINA_HOME, $JAVA_HOME, $ANT_HOME. To setup environment variables create a file named ‘.profile’ in your home directory or edit it if it’s already there. Open it up with TextWrangler or use vi to edit it. Now add tomcat home, java home and ant home like below.

>edit .profile
[edit the file to set values and save]
>source .profile


CATALINA_HOME=/usr/local/apache-tomcat-6.0.24
export CATALINA_HOME;
JAVA_HOME=/Library/Java/Home
export JAVA_HOME;
ANT_HOME=/usr/share/ant
export ANT_HOME;

Important points here: Usually Mac OS comes with Java and default Java Home directory is located at /Library/Java/Home. In case you want to know where your ant home is. Type command ant -diagnostics then scroll up to see where ant.jar is in command line output. You know where ant is then.

4. Installing MySQL on OS X - This is pretty easy with Mac OSX Distribution you could download at MySQL web site. You can easily install MySQL with installer and then follow the instructions in Read Me to start MySQL server to work with.

Download Mac OS X MySQL Server Distribution

Important points here: Once you setup alliances in ~/.bash_profile as in README, To setup a root password use following command mysqladmin -u root password passwd

5. Setting up tomcat to connect to MySQL - you have to add the mysql-connector jar file to library folder and also edit the context.xml file in tomcat server. Read the detailed steps in following article to understand it fully.

MySQL DBCP Example on tomcat 6

Now you can run your JSP or Servlet application without any issues on Mac OS within tomcat server with MySQL databases.

1. Check UIImage width and height we want to scale first. If both width and height are same no need to crop. If width is bigger then we need to crop image to a ratio of its height. And we determine the xposition to crop the image by subtracting height by its width and then dividing answer by two. The same process done other way if height is bigger than width taking width as the cropping ratio.

2. Now we have a square image that we can scale to our thumb size. This scaling now will not include any distortions to the image.

Below is the code segment that does it nicely.

/** generate thumbnail version of given image to show in properly **/
- (UIImage *)generatePhotoThumbnail:(UIImage *)image withRatio:(float)ratio {
   // first crop to a rectangle and then scale the cropped image to ratio
   CGRect cropRect;
   if (image.size.width == image.size.height) {
      // height and width are same - do not crop here
      cropRect = CGRectMake(0.0, 0.0, image.size.width, image.size.height);
   } else if (image.size.width > image.size.height) {
      // width is longer - take height and adjust xgap to crop
      int xgap = (image.size.width - image.size.height)/2;
      cropRect = CGRectMake(xgap, 0.0, image.size.height, image.size.height);
   } else {
      // height is longer - take height and adjust ygap to crop
      int ygap = (image.size.height - image.size.width)/2;
      cropRect = CGRectMake(0.0, ygap, image.size.width, image.size.width);
   }
   // crop image with calcuted crop rect
   CGImageRef imageRef = CGImageCreateWithImageInRect([image CGImage], cropRect);
   UIImage *cropped = [UIImage imageWithCGImage:imageRef];
   CGImageRelease(imageRef);
   // scale the image to ratio to create proper thumb
   NSData *pngData = UIImagePNGRepresentation(cropped);
   UIImage *myThumbNail    = [[UIImage alloc] initWithData:pngData];

   // begin an image context that will essentially keep our new image
   UIGraphicsBeginImageContext(CGSizeMake(ratio,ratio));

   // now redraw our image in a smaller rectangle.
   [myThumbNail drawInRect:CGRectMake(0.0, 0.0, ratio, ratio)];

   // make a copy of the image from the current context
   UIImage *newImage    = UIGraphicsGetImageFromCurrentImageContext();
   UIGraphicsEndImageContext();
   [myThumbNail release];
   return newImage;
}

You can see a very small link right to your profile name called “connected sites” .. go there and add your Twitter profile feed.. so you don’t need to buzz in Google

Google Profile Connected Sites small link

But this personally feels like messy for me having loads of buzzes in Personal email