delphiAx / ForgeRock Identity Cloud Collection / Step 3: Exchange the Authorization Code for an Access Token
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var
http: TChilkatHttp;
success: Integer;
req: TChilkatHttpRequest;
jsonParam2: TChilkatJsonObject;
jsonParam3: TChilkatJsonObject;
jsonParam4: TChilkatJsonObject;
jsonParam5: TChilkatJsonObject;
jsonParam6: TChilkatJsonObject;
resp: IChilkatHttpResponse;
sbResponseBody: TChilkatStringBuilder;
jResp: TChilkatJsonObject;
respStatusCode: Integer;
access_token: WideString;
refresh_token: WideString;
scope: WideString;
token_type: WideString;
expires_in: Integer;
begin
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
http := TChilkatHttp.Create(Self);
req := TChilkatHttpRequest.Create(Self);
req.AddParam('grant_type','authorization_code');
jsonParam2 := TChilkatJsonObject.Create(Self);
req.AddParam('code',jsonParam2.Emit());
jsonParam3 := TChilkatJsonObject.Create(Self);
req.AddParam('client_id',jsonParam3.Emit());
jsonParam4 := TChilkatJsonObject.Create(Self);
req.AddParam('client_secret',jsonParam4.Emit());
jsonParam5 := TChilkatJsonObject.Create(Self);
req.AddParam('redirect_uri',jsonParam5.Emit());
jsonParam6 := TChilkatJsonObject.Create(Self);
req.AddParam('code_verifier',jsonParam6.Emit());
req.AddHeader('Authorization','Bearer <access_token>');
resp := http.PostUrlEncoded('https://<tenant-name>.forgeblocks.com/am/oauth2/realms/root/realms/alpha/access_token',req.ControlInterface);
if (http.LastMethodSuccess = 0) then
begin
Memo1.Lines.Add(http.LastErrorText);
Exit;
end;
sbResponseBody := TChilkatStringBuilder.Create(Self);
resp.GetBodySb(sbResponseBody.ControlInterface);
jResp := TChilkatJsonObject.Create(Self);
jResp.LoadSb(sbResponseBody.ControlInterface);
jResp.EmitCompact := 0;
Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(jResp.Emit());
respStatusCode := resp.StatusCode;
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode >= 400) then
begin
Memo1.Lines.Add('Response Header:');
Memo1.Lines.Add(resp.Header);
Memo1.Lines.Add('Failed.');
Exit;
end;
// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)
// {
// "access_token": "eyJ0eXAiJ9.eyJzdWIiOiJkZPXXcM",
// "refresh_token": "eyJ0eXAiOiJKV1QiLC.eyl0VHJXpdhFiWDw",
// "scope": "share",
// "token_type": "Bearer",
// "expires_in": 3599
// }
// Sample code for parsing the JSON response...
// Use this online tool to generate parsing code from sample JSON: Generate JSON Parsing Code
access_token := jResp.StringOf('access_token');
refresh_token := jResp.StringOf('refresh_token');
scope := jResp.StringOf('scope');
token_type := jResp.StringOf('token_type');
expires_in := jResp.IntOf('expires_in');
Curl Command
curl -X POST
-H "Authorization: Bearer <access_token>"
-H "Content-Type: application/x-www-form-urlencoded"
--data-urlencode 'grant_type=authorization_code'
--data-urlencode 'code={{authorization_code}}'
--data-urlencode 'client_id={{postmanConfidentialClientId}}'
--data-urlencode 'client_secret={{postmanClientSecret}}'
--data-urlencode 'redirect_uri={{redirect_uri}}'
--data-urlencode 'code_verifier={{code_verifier}}'
https://<tenant-name>.forgeblocks.com/am/oauth2/realms/root/realms/alpha/access_token
Postman Collection Item JSON
{
"name": "Step 3: Exchange the Authorization Code for an Access Token",
"event": [
{
"listen": "prerequest",
"script": {
"exec": [
""
],
"type": "text/javascript"
}
},
{
"listen": "test",
"script": {
"exec": [
"var jsonData = JSON.parse(responseBody);",
"",
"if(jsonData.access_token && jsonData.access_token != \"\")",
"{",
" pm.globals.set(\"access_token\", jsonData.access_token);",
"}",
"",
"if(jsonData.refresh_token && jsonData.refresh_token != \"\")",
"{",
" pm.globals.set(\"refresh_token\", jsonData.refresh_token);",
"}",
"",
"// Tests",
"",
"pm.test(\"Status code is 200\", () => {",
" pm.expect(pm.response.code).to.eql(200);",
"});",
"",
"pm.test(\"Response contains access_token\", function () {",
" pm.expect(jsonData.access_token).to.be.a(\"string\");",
"});",
"",
""
],
"type": "text/javascript"
}
}
],
"request": {
"method": "POST",
"header": [
{
"key": "Content-Type",
"name": "Content-Type",
"value": "application/x-www-form-urlencoded",
"type": "text"
}
],
"body": {
"mode": "urlencoded",
"urlencoded": [
{
"key": "grant_type",
"value": "authorization_code",
"description": "The grant type required for the Authorization Code with PKCE grant.",
"type": "text"
},
{
"key": "code",
"value": "{{authorization_code}}",
"description": "The authentication code from the previous step.",
"type": "text"
},
{
"key": "client_id",
"value": "{{postmanConfidentialClientId}}",
"description": "The ID of the Confidential OAuth Client.",
"type": "text"
},
{
"key": "client_secret",
"value": "{{postmanClientSecret}}",
"description": "The secret of the Confidential OAuth Client. See the ForgeRock documentation for stronger methods of client authentication.",
"type": "text"
},
{
"key": "redirect_uri",
"value": "{{redirect_uri}}",
"description": "The complete URI to which client redirects the user if the request is successful.",
"type": "text"
},
{
"key": "code_verifier",
"value": "{{code_verifier}}",
"description": "The generated code verifier. See the \"Pre-request Script\" tab of \"Step 2\" for details.",
"type": "text"
}
]
},
"url": {
"raw": "{{amUrl}}/oauth2{{realm}}/access_token",
"host": [
"{{amUrl}}"
],
"path": [
"oauth2{{realm}}",
"access_token"
]
},
"description": "Authenticate with the authorization server using the details of the confidential client and the authorization code recieved in the previous call.\n"
},
"response": [
{
"name": "Example",
"originalRequest": {
"method": "POST",
"header": [
{
"key": "Content-Type",
"name": "Content-Type",
"value": "application/x-www-form-urlencoded",
"type": "text"
}
],
"body": {
"mode": "urlencoded",
"urlencoded": [
{
"key": "grant_type",
"value": "authorization_code",
"description": "The grant type required for the Authorization Code with PKCE grant.",
"type": "text"
},
{
"key": "code",
"value": "{{authorization_code}}",
"description": "The authentication code from the previous step.",
"type": "text"
},
{
"key": "client_id",
"value": "{{postmanConfidentialClientId}}",
"description": "The ID of the Confidential OAuth Client.",
"type": "text"
},
{
"key": "client_secret",
"value": "{{postmanClientSecret}}",
"description": "The secret of the Confidential OAuth Client. See the ForgeRock documentation for stronger methods of client authentication.",
"type": "text"
},
{
"key": "redirect_uri",
"value": "{{redirect_uri}}",
"description": "The complete URI to which client redirects the user if the request is successful.",
"type": "text"
},
{
"key": "code_verifier",
"value": "{{code_verifier}}",
"description": "The generated code verifier.",
"type": "text"
}
]
},
"url": {
"raw": "{{amUrl}}/oauth2{{realm}}/access_token",
"host": [
"{{amUrl}}"
],
"path": [
"oauth2{{realm}}",
"access_token"
]
}
},
"status": "OK",
"code": 200,
"_postman_previewlanguage": "json",
"header": [
{
"key": "X-Frame-Options",
"value": "SAMEORIGIN"
},
{
"key": "X-Content-Type-Options",
"value": "nosniff"
},
{
"key": "Cache-Control",
"value": "no-store"
},
{
"key": "Pragma",
"value": "no-cache"
},
{
"key": "Content-Type",
"value": "application/json;charset=UTF-8"
},
{
"key": "Content-Length",
"value": "1644"
},
{
"key": "Date",
"value": "Thu, 13 Aug 2020 12:14:20 GMT"
}
],
"cookie": [
],
"body": "{\n \"access_token\": \"eyJ0eXAiJ9.eyJzdWIiOiJkZPXXcM\",\n \"refresh_token\": \"eyJ0eXAiOiJKV1QiLC.eyl0VHJXpdhFiWDw\",\n \"scope\": \"share\",\n \"token_type\": \"Bearer\",\n \"expires_in\": 3599\n}"
}
]
}
