(Delphi ActiveX) WordPress Authentication with Applications Password Plugin

See more WordPress Examples

Demonstrates basic username/password authentication using the WordPress Applications Password plugin.

For more information, see https://wordpress.org/plugins/application-passwords/

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
http: TChilkatHttp;
success: Integer;
sbResponseBody: TChilkatStringBuilder;
jarrResp: TChilkatJsonArray;
respStatusCode: Integer;
date_gmt: TDtObj;
json: IChilkatJsonObject;
id: Integer;
date: WideString;
guidRendered: WideString;
modified: WideString;
modified_gmt: WideString;
slug: WideString;
status: WideString;
v_type: WideString;
link: WideString;
titleRendered: WideString;
contentRendered: WideString;
contentProtected: Integer;
excerptRendered: WideString;
excerptProtected: Integer;
author: Integer;
featured_media: Integer;
comment_status: WideString;
ping_status: WideString;
sticky: Integer;
template: WideString;
format: WideString;
j: Integer;
count_j: Integer;
intVal: Integer;
href: WideString;
embeddable: Integer;
count: Integer;
taxonomy: WideString;
name: WideString;
templated: Integer;
i: Integer;
count_i: Integer;

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

http := TChilkatHttp.Create(Self);

// Implements the following CURL command:

// curl -X GET --user wp_username:app_password https://www.yoursite.com/wp-json/wp/v2/posts?page=1

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

// Use your WordPress login, such as "admin", not the application name.
http.Login := 'wp_username';
// Use the application password, such as "Nths RwVH eDJ4 weNZ orMN jabq"
http.Password := 'app_password';
http.BasicAuth := 1;

sbResponseBody := TChilkatStringBuilder.Create(Self);
success := http.QuickGetSb('https://www.yoursite.com/wp-json/wp/v2/posts?page=1',sbResponseBody.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

jarrResp := TChilkatJsonArray.Create(Self);
jarrResp.LoadSb(sbResponseBody.ControlInterface);
jarrResp.EmitCompact := 0;

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(jarrResp.Emit());

respStatusCode := http.LastStatus;
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(http.LastHeader);
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// [
//   {
//     "id": 1902,
//     "date": "2020-11-16T09:54:09",
//     "date_gmt": "2020-11-16T16:54:09",
//     "guid": {
//       "rendered": "http:\/\/cknotes.com\/?p=1902"
//     },
//     "modified": "2020-11-16T09:54:09",
//     "modified_gmt": "2020-11-16T16:54:09",
//     "slug": "xero-redirect-uri-for-oauth2-and-desktop-apps",
//     "status": "publish",
//     "type": "post",
//     "link": "https:\/\/cknotes.com\/xero-redirect-uri-for-oauth2-and-desktop-apps\/",
//     "title": {
//       "rendered": "Xero Redirect URI for OAuth2 and Desktop Apps"
//     },
//     "content": {
//       "rendered": "<p>...",
//       "protected": false
//     },
//     "excerpt": {
//       "rendered": "<p>...",
//       "protected": false
//     },
//     "author": 1,
//     "featured_media": 0,
//     "comment_status": "closed",
//     "ping_status": "open",
//     "sticky": false,
//     "template": "",
//     "format": "standard",
//     "meta": [
//     ],
//     "categories": [
//       815
//     ],
//     "tags": [
//       594,
//       816
//     ],
//     "_links": {
//       "self": [
//         {
//           "href": "https:\/\/cknotes.com\/wp-json\/wp\/v2\/posts\/1902"
//         }
//       ],
//       "collection": [
//         {
//           "href": "https:\/\/cknotes.com\/wp-json\/wp\/v2\/posts"
//         }
//       ],
//       "about": [
//         {
//           "href": "https:\/\/cknotes.com\/wp-json\/wp\/v2\/types\/post"
//         }
//       ],
//       "author": [
//         {
//           "embeddable": true,
//           "href": "https:\/\/cknotes.com\/wp-json\/wp\/v2\/users\/1"
//         }
//       ],
//       "replies": [
//         {
//           "embeddable": true,
//           "href": "https:\/\/cknotes.com\/wp-json\/wp\/v2\/comments?post=1902"
//         }
//       ],
//       "version-history": [
//         {
//           "count": 1,
//           "href": "https:\/\/cknotes.com\/wp-json\/wp\/v2\/posts\/1902\/revisions"
//         }
//       ],
//       "predecessor-version": [
//         {
//           "id": 1904,
//           "href": "https:\/\/cknotes.com\/wp-json\/wp\/v2\/posts\/1902\/revisions\/1904"
//         }
//       ],
//       "wp:attachment": [
//         {
//           "href": "https:\/\/cknotes.com\/wp-json\/wp\/v2\/media?parent=1902"
//         }
//       ],
//       "wp:term": [
//         {
//           "taxonomy": "category",
//           "embeddable": true,
//           "href": "https:\/\/cknotes.com\/wp-json\/wp\/v2\/categories?post=1902"
//         },
//         {
//           "taxonomy": "post_tag",
//           "embeddable": true,
//           "href": "https:\/\/cknotes.com\/wp-json\/wp\/v2\/tags?post=1902"
//         }
//       ],
//       "curies": [
//         {
//           "name": "wp",
//           "href": "https:\/\/api.w.org\/{rel}",
//           "templated": true
//         }
//       ]
//     }
//   },
// ...
// ]

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

date_gmt := TDtObj.Create(Self);

i := 0;
count_i := jarrResp.Size;
while i < count_i do
  begin
    json := jarrResp.ObjectAt(i);
    id := json.IntOf('id');
    date := json.StringOf('date');
    json.DtOf('date_gmt',0,date_gmt.ControlInterface);
    guidRendered := json.StringOf('guid.rendered');
    modified := json.StringOf('modified');
    modified_gmt := json.StringOf('modified_gmt');
    slug := json.StringOf('slug');
    status := json.StringOf('status');
    v_type := json.StringOf('type');
    link := json.StringOf('link');
    titleRendered := json.StringOf('title.rendered');
    contentRendered := json.StringOf('content.rendered');
    contentProtected := json.BoolOf('content.protected');
    excerptRendered := json.StringOf('excerpt.rendered');
    excerptProtected := json.BoolOf('excerpt.protected');
    author := json.IntOf('author');
    featured_media := json.IntOf('featured_media');
    comment_status := json.StringOf('comment_status');
    ping_status := json.StringOf('ping_status');
    sticky := json.BoolOf('sticky');
    template := json.StringOf('template');
    format := json.StringOf('format');
    j := 0;
    count_j := json.SizeOfArray('meta');
    while j < count_j do
      begin
        json.J := j;
        j := j + 1;
      end;

    j := 0;
    count_j := json.SizeOfArray('categories');
    while j < count_j do
      begin
        json.J := j;
        intVal := json.IntOf('categories[j]');
        j := j + 1;
      end;

    j := 0;
    count_j := json.SizeOfArray('tags');
    while j < count_j do
      begin
        json.J := j;
        intVal := json.IntOf('tags[j]');
        j := j + 1;
      end;

    j := 0;
    count_j := json.SizeOfArray('_links.self');
    while j < count_j do
      begin
        json.J := j;
        href := json.StringOf('_links.self[j].href');
        j := j + 1;
      end;

    j := 0;
    count_j := json.SizeOfArray('_links.collection');
    while j < count_j do
      begin
        json.J := j;
        href := json.StringOf('_links.collection[j].href');
        j := j + 1;
      end;

    j := 0;
    count_j := json.SizeOfArray('_links.about');
    while j < count_j do
      begin
        json.J := j;
        href := json.StringOf('_links.about[j].href');
        j := j + 1;
      end;

    j := 0;
    count_j := json.SizeOfArray('_links.author');
    while j < count_j do
      begin
        json.J := j;
        embeddable := json.BoolOf('_links.author[j].embeddable');
        href := json.StringOf('_links.author[j].href');
        j := j + 1;
      end;

    j := 0;
    count_j := json.SizeOfArray('_links.replies');
    while j < count_j do
      begin
        json.J := j;
        embeddable := json.BoolOf('_links.replies[j].embeddable');
        href := json.StringOf('_links.replies[j].href');
        j := j + 1;
      end;

    j := 0;
    count_j := json.SizeOfArray('_links.version-history');
    while j < count_j do
      begin
        json.J := j;
        count := json.IntOf('_links.version-history[j].count');
        href := json.StringOf('_links.version-history[j].href');
        j := j + 1;
      end;

    j := 0;
    count_j := json.SizeOfArray('_links.predecessor-version');
    while j < count_j do
      begin
        json.J := j;
        id := json.IntOf('_links.predecessor-version[j].id');
        href := json.StringOf('_links.predecessor-version[j].href');
        j := j + 1;
      end;

    j := 0;
    count_j := json.SizeOfArray('_links.wp:attachment');
    while j < count_j do
      begin
        json.J := j;
        href := json.StringOf('_links.wp:attachment[j].href');
        j := j + 1;
      end;

    j := 0;
    count_j := json.SizeOfArray('_links.wp:term');
    while j < count_j do
      begin
        json.J := j;
        taxonomy := json.StringOf('_links.wp:term[j].taxonomy');
        embeddable := json.BoolOf('_links.wp:term[j].embeddable');
        href := json.StringOf('_links.wp:term[j].href');
        j := j + 1;
      end;

    j := 0;
    count_j := json.SizeOfArray('_links.curies');
    while j < count_j do
      begin
        json.J := j;
        name := json.StringOf('_links.curies[j].name');
        href := json.StringOf('_links.curies[j].href');
        templated := json.BoolOf('_links.curies[j].templated');
        j := j + 1;
      end;

    i := i + 1;
  end;
end;