C / Salesforce Platform APIs / Client Credentials Flow - basic authorization header
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#include <C_CkHttp.h>
#include <C_CkHttpRequest.h>
#include <C_CkHttpResponse.h>
#include <C_CkStringBuilder.h>
#include <C_CkJsonObject.h>
void ChilkatSample(void)
{
HCkHttp http;
BOOL success;
HCkHttpRequest req;
HCkHttpResponse resp;
HCkStringBuilder sbResponseBody;
HCkJsonObject jResp;
int respStatusCode;
const char *access_token;
const char *signature;
const char *scope;
const char *instance_url;
const char *id;
const char *token_type;
const char *issued_at;
const char *api_instance_url;
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
http = CkHttp_Create();
req = CkHttpRequest_Create();
CkHttpRequest_AddParam(req,"grant_type","client_credentials");
CkHttpRequest_AddHeader(req,"Authorization","Basic {{clientCredential_basicAuthEncoded}}");
resp = CkHttp_PostUrlEncoded(http,"https://login.salesforce.com{{site}}/services/oauth2/token",req);
if (CkHttp_getLastMethodSuccess(http) == FALSE) {
printf("%s\n",CkHttp_lastErrorText(http));
CkHttp_Dispose(http);
CkHttpRequest_Dispose(req);
return;
}
sbResponseBody = CkStringBuilder_Create();
CkHttpResponse_GetBodySb(resp,sbResponseBody);
jResp = CkJsonObject_Create();
CkJsonObject_LoadSb(jResp,sbResponseBody);
CkJsonObject_putEmitCompact(jResp,FALSE);
printf("Response Body:\n");
printf("%s\n",CkJsonObject_emit(jResp));
respStatusCode = CkHttpResponse_getStatusCode(resp);
printf("Response Status Code = %d\n",respStatusCode);
if (respStatusCode >= 400) {
printf("Response Header:\n");
printf("%s\n",CkHttpResponse_header(resp));
printf("Failed.\n");
CkHttpResponse_Dispose(resp);
CkHttp_Dispose(http);
CkHttpRequest_Dispose(req);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);
return;
}
CkHttpResponse_Dispose(resp);
// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)
// {
// "access_token": "<access_token>",
// "signature": "<signature>",
// "scope": "<scope list>",
// "instance_url": "https://<my_domain>",
// "id": "https://login.salesforce.com/id/00D.../005...",
// "token_type": "Bearer",
// "issued_at": "<timestamp>",
// "api_instance_url": "https://api.salesforce.com"
// }
// 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 = CkJsonObject_stringOf(jResp,"access_token");
signature = CkJsonObject_stringOf(jResp,"signature");
scope = CkJsonObject_stringOf(jResp,"scope");
instance_url = CkJsonObject_stringOf(jResp,"instance_url");
id = CkJsonObject_stringOf(jResp,"id");
token_type = CkJsonObject_stringOf(jResp,"token_type");
issued_at = CkJsonObject_stringOf(jResp,"issued_at");
api_instance_url = CkJsonObject_stringOf(jResp,"api_instance_url");
CkHttp_Dispose(http);
CkHttpRequest_Dispose(req);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);
}
Curl Command
curl -X POST
-H "Content-Type: application/x-www-form-urlencoded"
-H "Authorization: Basic {{clientCredential_basicAuthEncoded}}"
--data-urlencode 'grant_type=client_credentials'
https://login.salesforce.com{{site}}/services/oauth2/token
Postman Collection Item JSON
{
"name": "Client Credentials Flow - basic authorization header",
"event": [
{
"listen": "test",
"script": {
"exec": [
"const jsonData = pm.response.json();",
"",
"if(!jsonData.error){",
" const id = jsonData.id.split('/');",
" const context = pm.environment.name ? pm.environment : pm.collectionVariables;",
" context.set(\"_accessToken\", jsonData.access_token);",
" context.set(\"_endpoint\", jsonData.instance_url);",
" context.set(\"_userId\", id.pop());",
" context.set(\"_orgId\", id.pop());",
"}"
],
"type": "text/javascript"
}
},
{
"listen": "prerequest",
"script": {
"exec": [
"const context = pm.environment.name ? pm.environment : pm.collectionVariables;",
"",
"const basicAuth = context.get(\"clientId\") + \":\" + context.get(\"clientSecret\");",
"const basicAuthEncoded = CryptoJS.enc.Base64.stringify(CryptoJS.enc.Utf8.parse(basicAuth));",
"",
"pm.environment.set(\"clientCredential_basicAuthEncoded\", basicAuthEncoded);"
],
"type": "text/javascript"
}
}
],
"protocolProfileBehavior": {
"disableCookies": true
},
"request": {
"auth": {
"type": "noauth"
},
"method": "POST",
"header": [
{
"key": "Content-Type",
"value": "application/x-www-form-urlencoded"
},
{
"key": "Authorization",
"value": "Basic {{clientCredential_basicAuthEncoded}}",
"description": "Base64 encoded basic credentials (see pre-request script)"
}
],
"body": {
"mode": "urlencoded",
"urlencoded": [
{
"key": "grant_type",
"value": "client_credentials",
"type": "text"
},
{
"key": "client_id",
"value": "{{clientId}}",
"type": "text",
"disabled": true
},
{
"key": "client_secret",
"value": "{{clientSecret}}",
"type": "text",
"disabled": true
}
]
},
"url": {
"raw": "{{url}}{{site}}/services/oauth2/token",
"host": [
"{{url}}{{site}}"
],
"path": [
"services",
"oauth2",
"token"
]
}
},
"response": [
{
"name": "Successful Client Credentials Flow - basic authorization header",
"originalRequest": {
"method": "POST",
"header": [
{
"key": "Content-Type",
"value": "application/x-www-form-urlencoded"
},
{
"key": "Authorization",
"value": "Basic {{clientCredential_basicAuthEncoded}}",
"description": "Base64 encoded basic credentials (see pre-request script)"
}
],
"body": {
"mode": "urlencoded",
"urlencoded": [
{
"key": "grant_type",
"value": "client_credentials",
"type": "text"
},
{
"key": "client_id",
"value": "{{clientId}}",
"type": "text",
"disabled": true
},
{
"key": "client_secret",
"value": "{{clientSecret}}",
"type": "text",
"disabled": true
}
]
},
"url": {
"raw": "{{url}}{{site}}/services/oauth2/token",
"host": [
"{{url}}{{site}}"
],
"path": [
"services",
"oauth2",
"token"
]
}
},
"status": "OK",
"code": 200,
"_postman_previewlanguage": "json",
"header": [
{
"key": "Date",
"value": "Thu, 16 Nov 2023 15:29:08 GMT"
},
{
"key": "Set-Cookie",
"value": "CookieConsentPolicy=0:1; path=/; expires=Fri, 15-Nov-2024 15:29:08 GMT; Max-Age=31536000"
},
{
"key": "Set-Cookie",
"value": "LSKey-c$CookieConsentPolicy=0:1; path=/; expires=Fri, 15-Nov-2024 15:29:08 GMT; Max-Age=31536000"
},
{
"key": "Set-Cookie",
"value": "BrowserId=4pAG8YSUEe6FQrcdNvkArw; domain=.salesforce.com; path=/; expires=Fri, 15-Nov-2024 15:29:08 GMT; Max-Age=31536000"
},
{
"key": "Strict-Transport-Security",
"value": "max-age=63072000; includeSubDomains"
},
{
"key": "X-Content-Type-Options",
"value": "nosniff"
},
{
"key": "X-XSS-Protection",
"value": "1; mode=block"
},
{
"key": "X-Robots-Tag",
"value": "none"
},
{
"key": "Cache-Control",
"value": "no-cache,must-revalidate,max-age=0,no-store,private"
},
{
"key": "Expires",
"value": "Thu, 01 Jan 1970 00:00:00 GMT"
},
{
"key": "Content-Type",
"value": "application/json;charset=UTF-8"
},
{
"key": "Vary",
"value": "Accept-Encoding"
},
{
"key": "Content-Encoding",
"value": "gzip"
},
{
"key": "Transfer-Encoding",
"value": "chunked"
}
],
"cookie": [
],
"body": "{\n \"access_token\": \"<access_token>\",\n \"signature\": \"<signature>\",\n \"scope\": \"<scope list>\",\n \"instance_url\": \"https://<my_domain>\",\n \"id\": \"https://login.salesforce.com/id/00D.../005...\",\n \"token_type\": \"Bearer\",\n \"issued_at\": \"<timestamp>\",\n \"api_instance_url\": \"https://api.salesforce.com\"\n}"
}
]
}
