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(Delphi ActiveX) Etsy OAuth1 Authorization

See more Etsy Examples

Demonstrates 3-legged OAuth1 authorization for Etsy.

For more information, see https://www.etsy.com/developers/documentation/getting_started/oauth

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
consumerKey: WideString;
consumerSecret: WideString;
requestTokenUrl: WideString;
authorizeUrl: WideString;
accessTokenUrl: WideString;
callbackUrl: WideString;
callbackLocalPort: Integer;
http: TChilkatHttp;
success: Integer;
req: TChilkatHttpRequest;
resp: IChilkatHttpResponse;
hashTab: TChilkatHashtable;
requestToken: WideString;
requestTokenSecret: WideString;
sbUrlForBrowser: TChilkatStringBuilder;
url: WideString;
listenSock: TChilkatSocket;
backLog: Integer;
maxWaitMs: Integer;
task: IChilkatTask;
sock: TChilkatSocket;
startLine: WideString;
requestHeader: WideString;
sbResponseHtml: TChilkatStringBuilder;
sbResponse: TChilkatStringBuilder;
sbStartLine: TChilkatStringBuilder;
numReplacements: Integer;
authVerifier: WideString;
accessToken: WideString;
accessTokenSecret: WideString;
json: TChilkatJsonObject;
fac: TCkFileAccess;

begin
consumerKey := 'keystring';
consumerSecret := 'shared_secret';

// Specify one or more SPACE separated scopes as query params in the requestTokenUrl
// See https://www.etsy.com/developers/documentation/getting_started/oauth#section_permission_scopes
requestTokenUrl := 'https://openapi.etsy.com/v2/oauth/request_token?scope=email_r%20listings_r%20listings_w%20listings_d';
authorizeUrl := 'https://www.etsy.com/oauth/signin';
accessTokenUrl := 'https://openapi.etsy.com/v2/oauth/access_token';

// The port number is picked at random. It's some unused port that won't likely conflict with anything else..
callbackUrl := 'http://localhost:3017/';
callbackLocalPort := 3017;

// The 1st step in 3-legged OAuth1.0a is to send a POST to the request token URL to obtain an OAuth Request Token
http := TChilkatHttp.Create(Self);

http.OAuth1 := 1;
http.OAuthConsumerKey := consumerKey;
http.OAuthConsumerSecret := consumerSecret;
http.OAuthCallback := callbackUrl;

req := TChilkatHttpRequest.Create(Self);
resp := http.PostUrlEncoded(requestTokenUrl,req.ControlInterface);
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

// If successful, the resp.BodyStr contains something like this:  
// login_url=https%3A%2F%2Fwww.etsy.com%2Foauth%2Fsignin%3Foauth_consumer_key%3D9ad9l1omxzbwfr2niq0ce1ly%26oauth_token%3D7116b4d0c72c2736561853d9e50113%26service%3Dv2_prod&oauth_token=7116b4d0c72c2736561853d9e50113&oauth_token_secret=3b7612b5d3&oauth_callback_confirmed=true&oauth_consumer_key=9ad9l1omxzbwfr2niq0ce1ly&oauth_callback=http%3A%2F%2Flocalhost%3A3017%2F
Memo1.Lines.Add(resp.BodyStr);

// We'll need this for later..
hashTab := TChilkatHashtable.Create(Self);
hashTab.AddQueryParams(resp.BodyStr);

requestToken := hashTab.LookupStr('oauth_token');
requestTokenSecret := hashTab.LookupStr('oauth_token_secret');
http.OAuthTokenSecret := requestTokenSecret;

Memo1.Lines.Add('oauth_token = ' + requestToken);
Memo1.Lines.Add('oauth_token_secret = ' + requestTokenSecret);

// ---------------------------------------------------------------------------
// The next step is to form a URL to send to the authorizeUrl
// This is an HTTP GET that we load into a popup browser.
sbUrlForBrowser := TChilkatStringBuilder.Create(Self);
sbUrlForBrowser.Append(authorizeUrl);
sbUrlForBrowser.Append('?');
sbUrlForBrowser.Append(resp.BodyStr);
url := sbUrlForBrowser.GetAsString();

// When the url is loaded into a browser, the response from Etsy will redirect back to localhost:3017
// We'll need to start a socket that is listening on port 3017 for the callback from the browser.
listenSock := TChilkatSocket.Create(Self);

backLog := 5;
success := listenSock.BindAndListen(callbackLocalPort,backLog);
if (success <> 1) then
  begin
    Memo1.Lines.Add(listenSock.LastErrorText);
    Exit;
  end;

// Wait for the browser's connection in a background thread.
// (We'll send load the URL into the browser following this..)
// Wait a max of 60 seconds before giving up.
maxWaitMs := 60000;
task := listenSock.AcceptNextConnectionAsync(maxWaitMs);
task.Run();

// ****************************************************************
// At this point, your application should load the URL in a browser.
// For example, 
// in C#: System.Diagnostics.Process.Start(url);
// in Java: Desktop.getDesktop().browse(new URI(url));
// in VBScript: Set wsh=WScript.CreateObject("WScript.Shell")
//              wsh.Run url
// in Xojo: ShowURL(url)  (see http://docs.xojo.com/index.php/ShowURL)
// in Dataflex: Runprogram Background "c:\Program Files\Internet Explorer\iexplore.exe" sUrl        
// The Google account owner would interactively accept or deny the authorization request.

// Add the code to load the url in a web browser here...
// Add the code to load the url in a web browser here...
// Add the code to load the url in a web browser here...
// System.Diagnostics.Process.Start(url);
// ****************************************************************

// Wait for the listenSock's task to complete.
success := task.Wait(maxWaitMs);
if (not success or (task.StatusInt <> 7) or (task.TaskSuccess <> 1)) then
  begin
    if (not success) then
      begin
        // The task.LastErrorText applies to the Wait method call.
        Memo1.Lines.Add(task.LastErrorText);
      end
    else
      begin
        // The ResultErrorText applies to the underlying task method call (i.e. the AcceptNextConnection)
        Memo1.Lines.Add(task.Status);
        Memo1.Lines.Add(task.ResultErrorText);
      end;

    Exit;
  end;

// If we get to this point, the connection from the browser arrived and was accepted.

// We no longer need the listen socket...
// Stop listening on port 3017.
listenSock.Close(10);

// First get the connected socket.
sock := TChilkatSocket.Create(Self);
sock.LoadTaskResult(task);

// Read the start line of the request..
startLine := sock.ReceiveUntilMatch(#13#10);
if (sock.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(sock.LastErrorText);
    Exit;
  end;

// Read the request header.
requestHeader := sock.ReceiveUntilMatch(#13#10 + #13#10);
if (sock.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(sock.LastErrorText);
    Exit;
  end;

// The browser SHOULD be sending us a GET request, and therefore there is no body to the request.
// Once the request header is received, we have all of it.
// We can now send our HTTP response.
sbResponseHtml := TChilkatStringBuilder.Create(Self);
sbResponseHtml.Append('<html><body><p>Chilkat thanks you!</b></body</html>');

sbResponse := TChilkatStringBuilder.Create(Self);
sbResponse.Append('HTTP/1.1 200 OK' + #13#10);
sbResponse.Append('Content-Length: ');
sbResponse.AppendInt(sbResponseHtml.Length);
sbResponse.Append(#13#10);
sbResponse.Append('Content-Type: text/html' + #13#10);
sbResponse.Append(#13#10);
sbResponse.AppendSb(sbResponseHtml.ControlInterface);

sock.SendString(sbResponse.GetAsString());
sock.Close(50);

// The information we need is in the startLine.
// For example, the startLine will look like this:
//  GET /?oauth_token=a3bc8bec84acc31418b68a532e9511&oauth_verifier=b5558d37 HTTP/1.1
sbStartLine := TChilkatStringBuilder.Create(Self);
sbStartLine.Append(startLine);
numReplacements := sbStartLine.Replace('GET /?','');
numReplacements := sbStartLine.Replace(' HTTP/1.1','');
sbStartLine.Trim();

// oauth_token=a3bc8bec84acc31418b68a532e9511&oauth_verifier=b5558d37
Memo1.Lines.Add('startline: ' + sbStartLine.GetAsString());

hashTab.Clear();
hashTab.AddQueryParams(sbStartLine.GetAsString());

requestToken := hashTab.LookupStr('oauth_token');
authVerifier := hashTab.LookupStr('oauth_verifier');

// ------------------------------------------------------------------------------
// Finally , we must exchange the OAuth Request Token for an OAuth Access Token.

http.OAuthToken := requestToken;
http.OAuthVerifier := authVerifier;
resp := http.PostUrlEncoded(accessTokenUrl,req.ControlInterface);
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

// Make sure a successful response was received.
if (resp.StatusCode <> 200) then
  begin
    Memo1.Lines.Add(resp.StatusLine);
    Memo1.Lines.Add(resp.Header);
    Memo1.Lines.Add(resp.BodyStr);
    Exit;
  end;

// If successful, the resp.BodyStr contains something like this:
// oauth_token=7898d7ba280dc791586dcfd26b37a9&oauth_token_secret=f2a7c267aa
Memo1.Lines.Add(resp.BodyStr);

hashTab.Clear();
hashTab.AddQueryParams(resp.BodyStr);

accessToken := hashTab.LookupStr('oauth_token');
accessTokenSecret := hashTab.LookupStr('oauth_token_secret');

// The access token + secret is what should be saved and used for
// subsequent REST API calls.
Memo1.Lines.Add('Access Token = ' + accessToken);
Memo1.Lines.Add('Access Token Secret = ' + accessTokenSecret);

// Save this access token for future calls.
// Just in case we need user_id and screen_name, save those also..
json := TChilkatJsonObject.Create(Self);
json.AppendString('oauth_token',accessToken);
json.AppendString('oauth_token_secret',accessTokenSecret);

fac := TCkFileAccess.Create(Self);
fac.WriteEntireTextFile('qa_data/tokens/etsy.json',json.Emit(),'utf-8',0);

Memo1.Lines.Add('Success.');
end;

 

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