(Delphi ActiveX) hotelbeds.com REST API Authentication

Demonstrates how to calculate the X-Signature header and add to requests sent to api.test.hotelbeds.com.

For more information, see https://developer.hotelbeds.com/documentation/getting-started/

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
dt: TCkDateTime;
bLocalTime: Integer;
unixTimeStr: WideString;
apiKey: WideString;
secret: WideString;
sb: TChilkatStringBuilder;
crypt: TChilkatCrypt2;
signature: WideString;
http: TChilkatHttp;
jsonResponse: WideString;

begin
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// This example duplicates the following CURL statement provided in the hotelbeds.com "Getting Started"
// developer documentation:

// #!/bin/bash 
// apiKey="yourApiKey"
// secret="yourSecret"
// curl -i \
//   -X GET \
//   -H 'Accept:application/json' \
//   -H 'Api-key:'$apiKey'' \
//   -H 'X-Signature:'$(echo -n ${apiKey}${secret}$(date +%s)|sha256sum|awk '{ print $1}')'' \
//   https://api.test.hotelbeds.com/hotel-api/1.0/status

// The "date + %s" command emits a UNIX date/time number such as 1605548842
// We need to concatenate the apiKey, secret, and current date/time in UNIX (numeric) time format.
dt := TCkDateTime.Create(Self);
dt.SetFromCurrentSystemTime();
// Get the UNIX time string in the GMT timezone.
bLocalTime := 0;
unixTimeStr := dt.GetAsUnixTimeStr(bLocalTime);
Memo1.Lines.Add(unixTimeStr);

// Use your own API key and secret.  (These are not valid values)
apiKey := '227b20a2cb705e45f3b0a0944672dc07';
secret := '54dc7ba9e2';

sb := TChilkatStringBuilder.Create(Self);
sb.Append(apiKey);
sb.Append(secret);
sb.Append(unixTimeStr);

crypt := TChilkatCrypt2.Create(Self);
crypt.HashAlgorithm := 'sha256';
crypt.EncodingMode := 'hexlower';
signature := crypt.HashStringENC(sb.GetAsString());

Memo1.Lines.Add(signature);

http := TChilkatHttp.Create(Self);

http.SetRequestHeader('Accept','application/json');
http.SetRequestHeader('Api-key',apiKey);
http.SetRequestHeader('X-Signature',signature);

jsonResponse := http.QuickGetStr('https://api.test.hotelbeds.com/hotel-api/1.0/status');
Memo1.Lines.Add(jsonResponse);
Memo1.Lines.Add(IntToStr(http.LastStatus));

// Sample output:  

// 1605549542
// 2146aefb36e7331b3b29aafd7638398ca22e689573224f1a71274d60bd201ec2
// {"auditData":{"timestamp":"2020-11-16 18:59:02.430"},"status":"OK"}
// 200
end;