unicodeC / ForgeRock Identity Cloud Collection / Step 3: Exchange the Authorization Code for an Access Token
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#include <C_CkHttpW.h>
#include <C_CkHttpRequestW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkHttpResponseW.h>
#include <C_CkStringBuilderW.h>
void ChilkatSample(void)
{
HCkHttpW http;
BOOL success;
HCkHttpRequestW req;
HCkJsonObjectW jsonParam2;
HCkJsonObjectW jsonParam3;
HCkJsonObjectW jsonParam4;
HCkJsonObjectW jsonParam5;
HCkJsonObjectW jsonParam6;
HCkHttpResponseW resp;
HCkStringBuilderW sbResponseBody;
HCkJsonObjectW jResp;
int respStatusCode;
const wchar_t *access_token;
const wchar_t *refresh_token;
const wchar_t *scope;
const wchar_t *token_type;
int expires_in;
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
http = CkHttpW_Create();
req = CkHttpRequestW_Create();
CkHttpRequestW_AddParam(req,L"grant_type",L"authorization_code");
jsonParam2 = CkJsonObjectW_Create();
CkHttpRequestW_AddParam(req,L"code",CkJsonObjectW_emit(jsonParam2));
jsonParam3 = CkJsonObjectW_Create();
CkHttpRequestW_AddParam(req,L"client_id",CkJsonObjectW_emit(jsonParam3));
jsonParam4 = CkJsonObjectW_Create();
CkHttpRequestW_AddParam(req,L"client_secret",CkJsonObjectW_emit(jsonParam4));
jsonParam5 = CkJsonObjectW_Create();
CkHttpRequestW_AddParam(req,L"redirect_uri",CkJsonObjectW_emit(jsonParam5));
jsonParam6 = CkJsonObjectW_Create();
CkHttpRequestW_AddParam(req,L"code_verifier",CkJsonObjectW_emit(jsonParam6));
CkHttpRequestW_AddHeader(req,L"Authorization",L"Bearer <access_token>");
resp = CkHttpW_PostUrlEncoded(http,L"https://<tenant-name>.forgeblocks.com/am/oauth2/realms/root/realms/alpha/access_token",req);
if (CkHttpW_getLastMethodSuccess(http) == FALSE) {
wprintf(L"%s\n",CkHttpW_lastErrorText(http));
CkHttpW_Dispose(http);
CkHttpRequestW_Dispose(req);
CkJsonObjectW_Dispose(jsonParam2);
CkJsonObjectW_Dispose(jsonParam3);
CkJsonObjectW_Dispose(jsonParam4);
CkJsonObjectW_Dispose(jsonParam5);
CkJsonObjectW_Dispose(jsonParam6);
return;
}
sbResponseBody = CkStringBuilderW_Create();
CkHttpResponseW_GetBodySb(resp,sbResponseBody);
jResp = CkJsonObjectW_Create();
CkJsonObjectW_LoadSb(jResp,sbResponseBody);
CkJsonObjectW_putEmitCompact(jResp,FALSE);
wprintf(L"Response Body:\n");
wprintf(L"%s\n",CkJsonObjectW_emit(jResp));
respStatusCode = CkHttpResponseW_getStatusCode(resp);
wprintf(L"Response Status Code = %d\n",respStatusCode);
if (respStatusCode >= 400) {
wprintf(L"Response Header:\n");
wprintf(L"%s\n",CkHttpResponseW_header(resp));
wprintf(L"Failed.\n");
CkHttpResponseW_Dispose(resp);
CkHttpW_Dispose(http);
CkHttpRequestW_Dispose(req);
CkJsonObjectW_Dispose(jsonParam2);
CkJsonObjectW_Dispose(jsonParam3);
CkJsonObjectW_Dispose(jsonParam4);
CkJsonObjectW_Dispose(jsonParam5);
CkJsonObjectW_Dispose(jsonParam6);
CkStringBuilderW_Dispose(sbResponseBody);
CkJsonObjectW_Dispose(jResp);
return;
}
CkHttpResponseW_Dispose(resp);
// 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
// Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
access_token = CkJsonObjectW_stringOf(jResp,L"access_token");
refresh_token = CkJsonObjectW_stringOf(jResp,L"refresh_token");
scope = CkJsonObjectW_stringOf(jResp,L"scope");
token_type = CkJsonObjectW_stringOf(jResp,L"token_type");
expires_in = CkJsonObjectW_IntOf(jResp,L"expires_in");
CkHttpW_Dispose(http);
CkHttpRequestW_Dispose(req);
CkJsonObjectW_Dispose(jsonParam2);
CkJsonObjectW_Dispose(jsonParam3);
CkJsonObjectW_Dispose(jsonParam4);
CkJsonObjectW_Dispose(jsonParam5);
CkJsonObjectW_Dispose(jsonParam6);
CkStringBuilderW_Dispose(sbResponseBody);
CkJsonObjectW_Dispose(jResp);
}
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}"
}
]
}
