ReCaptcha Asp Net

Recaptcha-asp-net

Google RECAPTCHA untuk ASP NET, disederhanakan

Instalasi

Nuget URL: https://www.nuget.org/packages/recaptcha-aspnet

 PM > Install-Package ReCaptcha-AspNet

Konfigurasi

Dapatkan Kunci Rahasia dan Publik Anda di https://www.google.com/recaptcha/admin

Tambahkan ke aplikasi Anda/web.config di dalam

< add key = " recaptcha-secret-key " value = " ...[secret key] " />
< add key = " recaptcha-public-key " value = " ...[public-key] " />

Opsional Jika Anda ingin mengubah bahasa default captcha (dapatkan kode bahasa di situs recaptcha: https://developers.google.com/recaptcha/docs/language) atau Anda dapat menggunakan nilai "Auto" dan itu akan mendapatkan bahasa dari system.thread.currentculture

< add key = " recaptcha-language-key " value = " [language-code] " />

Atau melalui kode C#: hanya perlu menyebutnya sekali, tempat yang baik untuk menempatkan ini adalah di fungsi application_start ()

 string publicKey = "...[public-key]" ;
string secretKey = "...[secret-key]" ;
ReCaptcha . Configure ( publicKey , secretKey ) ;

// Optional, select a default language:
ReCaptchaLanguage defaultLanguage = ReCaptchaLanguage . German ;
ReCaptcha . Configure ( publicKey , secretKey , defaultLanguage ) ;

//Auto-select language from System.Thread.CurrentCulture
ReCaptchaLanguage defaultLanguage = ReCaptchaLanguage . Auto ;
ReCaptcha . Configure ( publicKey , secretKey , defaultLanguage ) ;

Opsional jika Anda ingin mengubah tema default dari mode terang ke gelap.

< add key = " recaptcha-language-theme " value = " dark " />

Atau melalui kode C#:

 //Optional select a default dark theme
ReCaptchaLanguage defaultLanguage = ReCaptchaLanguage . Auto ;
ReCaptcha . Configure ( publicKey , secretKey , defaultLanguage , ReCaptchaTheme . dark ) ; 

Cara menggunakan

Sisi Klien (V2):

Di dalam bentuk Anda

 < form action =" myAction " >
  < input type =" text " name =" myinput1 " />
  @ReCaptcha.GetCaptcha() <!-- Will show your captcha as your configured Language, 
  if no language is defined it will show ReCaptcha default language (English) -->
</ form >

Opsional jika Anda ingin mengganti bahasa default yang dikonfigurasi:

 < form action =" myAction " >
  < input type =" text " name =" myinput1 " />
  @ReCaptcha.GetCaptcha(ReCaptchaLanguage.PortugueseBrazil) <!-- Will show your ReCaptcha as Portuguese, 
  overriding any previous configuration -->
</ form >

Opsional jika Anda ingin mengganti tema yang dikonfigurasi (terang/gelap):

 < form action =" myAction " >
  < input type =" text " name =" myinput1 " />
  @ReCaptcha.GetCaptcha(theme: ReCaptchaTheme.dark) <!-- Will show your ReCaptcha on dark theme, 
  overriding any previous configuration -->
</ form >

Sisi klien (tidak terlihat):

Di dalam bentuk Anda

 < script type =" text/javascript " > function submit ( ) { $ ( 'form' ) . submit ( ) ; } </ script >
< form action =" myAction " >
  < input type =" text " name =" myinput1 " />
  @ReCaptcha.GetInvisibleCaptcha("submit", "Save") <!-- Will show a button, with a Label Save and  call function "submit();" after user click ok and pass Captcha -->
</ form >

Opsional jika Anda ingin mengganti bahasa default yang dikonfigurasi:

 < script type =" text/javascript " > function submit ( ) { $ ( 'form' ) . submit ( ) ; } </ script >
< form action =" myAction " >
  < input type =" text " name =" myinput1 " />
  @ReCaptcha.GetInvisibleCaptcha("submit", "Save", ReCaptchaLanguage.PortugueseBrazil) <!-- Will show your Invisible ReCaptcha as Portuguese, overriding any previous configuration -->
</ form >

Sisi server:

Di dalam fungsi pengontrol Anda atau di dalam filter

 string userResponse = HttpContext . Request . Params [ "g-recaptcha-response" ] ;
bool validCaptcha = ReCaptcha . ValidateCaptcha ( userResponse ) ;
if ( validCaptcha ) {
  // Real User, validated !
  DoStuff ( ) ;
  .. .
} else {
  // Bot Attack, non validated !
  return RedirectToAction ( "YouAreARobot" , "Index" ) ;
} 

Opsional: Proxy

Anda dapat menggunakan proxy untuk mengirim respons pengguna ke server recaptcha

.. .
const string proxyIp = "xxx.xxx.xxx.xxx" ;
const int proxyPort = 1234 ;
WebProxy webProxy = new WebProxy ( proxyIp , proxyPort ) ; 
bool validCaptcha = ReCaptcha . ValidateCaptcha ( userResponse , webProxy ) ;
.. .

Dapat melempar pengecualian berikut, jika kunci rahasia tidak valid, atau Anda lulus respons pengguna yang tidak valid sebagai parameter validateCaptCHA:

 throw new ReCaptchaException ( ) ;

Itu juga bisa disebut async:

 public async ActionResult MyFunction ( ) {
  string userResponse = HttpContext . Request . Params [ "g-recaptcha-response" ] ;
  var validCaptcha = ReCaptcha . ValidateCaptchaAsync ( userResponse ) ;
  DoSomeParallelStuff ( ) ;
  
  if ( await validCaptcha ) {
    // Real User, validated !
    DoStuff ( ) ;
    .. .
  } else {
    // Bot Attack, non validated !
    return RedirectToAction ( "YouAreARobot" , "Index" ) ;
  }
}