Chilkat HOME .NET Core C# Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi ActiveX Delphi DLL Go Java Lianja Mono C# Node.js Objective-C PHP ActiveX PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift 2 Swift 3,4,5... Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(PHP Extension) Get E-way Bill System Access TokenSends a request to get an E-way bill system access token.
<?php // The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number. // For example, if using Chilkat v9.5.0.48, then include as shown here: include("chilkat_9_5_0.php"); // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // First load the public key provided by the E-way bill System $pubkey = new CkPublicKey(); $success = $pubkey->LoadFromFile('qa_data/pem/eway_publickey.pem'); if ($success != true) { print $pubkey->lastErrorText() . "\n"; exit; } // Encrypt the password using the RSA public key provided by eway.. $password = 'my_wepgst_password'; $rsa = new CkRsa(); $rsa->put_Charset('utf-8'); $rsa->put_EncodingMode('base64'); $success = $rsa->ImportPublicKeyObj($pubkey); if ($success != true) { print $rsa->lastErrorText() . "\n"; exit; } // Returns the encrypted password as base64 (because the EncodingMode = "base64") $encPassword = $rsa->encryptStringENC($password,false); if ($rsa->get_LastMethodSuccess() != true) { print $rsa->lastErrorText() . "\n"; exit; } // Generate a random app_key. This should be 32 bytes (us-ascii chars) // We need 32 bytes because we'll be doing 256-bit AES ECB encryption, and 32 bytes = 256 bits. $prng = new CkPrng(); // Generate a random string containing some numbers, uppercase, and lowercase. $app_key = $prng->randomString(32,true,true,true); print 'app_key = ' . $app_key . "\n"; // RSA encrypt the app_key. $encAppKey = $rsa->encryptStringENC($app_key,false); if ($rsa->get_LastMethodSuccess() != true) { print $rsa->lastErrorText() . "\n"; exit; } // Prepare the JSON body for the HTTP POST that gets the access token. $jsonBody = new CkJsonObject(); $jsonBody->UpdateString('action','ACCESSTOKEN'); // Use your username instead of "09ABDC24212B1FK". $jsonBody->UpdateString('username','09ABDC24212B1FK'); $jsonBody->UpdateString('password',$encPassword); $jsonBody->UpdateString('app_key',$encAppKey); $http = new CkHttp(); // Add required headers. // Use your ewb-user-id instead of "03AEXPR16A9M010" $http->SetRequestHeader('ewb-user-id','03AEXPR16A9M010'); // The Gstin should be the same as the username in the jsonBody above. $http->SetRequestHeader('Gstin','09ABDC24212B1FK'); $http->put_Accept('application/json'); // POST the JSON... // resp is a CkHttpResponse $resp = $http->PostJson2('http://ewb.wepgst.com/api/Authenticate','application/json',$jsonBody->emit()); if ($http->get_LastMethodSuccess() != true) { print $http->lastErrorText() . "\n"; exit; } $respStatusCode = $resp->get_StatusCode(); print 'response status code =' . $respStatusCode . "\n"; print 'response body:' . "\n"; print $resp->bodyStr() . "\n"; if ($respStatusCode != 200) { print 'Failed in some unknown way.' . "\n"; exit; } // When the response status code = 200, we'll have either // success response like this: // {"status":"1","authtoken":"...","sek":"..."} // // or a failed response like this: // // {"status":"0","error":"eyJlcnJvckNvZGVzIjoiMTA4In0="} // Load the response body into a JSON object. $json = new CkJsonObject(); $json->Load($resp->bodyStr()); $status = $json->IntOf('status'); print 'status = ' . $status . "\n"; if ($status != 1) { // Failed. Base64 decode the error // {"status":"0","error":"eyJlcnJvckNvZGVzIjoiMTA4In0="} // For an invalid password, the error is: {"errorCodes":"108"} $sbError = new CkStringBuilder(); $json->StringOfSb('error',$sbError); $sbError->Decode('base64','utf-8'); print 'error: ' . $sbError->getAsString() . "\n"; exit; } // At this point, we know the request was entirely successful. $authToken = $json->stringOf('authtoken'); // Decrypt the sek key using our app_key. $crypt = new CkCrypt2(); $crypt->put_CryptAlgorithm('aes'); $crypt->put_CipherMode('ecb'); $crypt->put_KeyLength(256); $crypt->SetEncodedKey($app_key,'us-ascii'); $crypt->put_EncodingMode('base64'); $bdSek = new CkBinData(); $bdSek->AppendEncoded($json->stringOf('sek'),'base64'); $crypt->DecryptBd($bdSek); // bdSek now contains the decrypted symmetric encryption key... // We'll use it to encrypt the JSON payloads we send. // Let's persist our authtoken and decrypted sek (symmetric encryption key). // To send EWAY requests (such as to create an e-way bill), we'll just load // and use these pre-obtained credentials. $jsonEwayAuth = new CkJsonObject(); $jsonEwayAuth->UpdateString('authToken',$authToken); $jsonEwayAuth->UpdateString('decryptedSek',$bdSek->getEncoded('base64')); $jsonEwayAuth->put_EmitCompact(false); $fac = new CkFileAccess(); $fac->WriteEntireTextFile('qa_data/tokens/ewayAuth.json',$jsonEwayAuth->emit(),'utf-8',false); print 'Saved:' . "\n"; print $jsonEwayAuth->emit() . "\n"; // Sample output: // { // "authToken": "IBTeFtxNfVurg71LTzZ2r0xK7", // "decryptedSek": "5g1TyTie7yoslU3DrbYATa7mWyPazlODE7cEh5Vy4Ho=" // } ?> |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.