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(Unicode C) Auth0 Server-to-Server Access Token (Client Credentials flow)Demonstrates how to obtain an Auth0 access token using client credentials (client_id and client_secret). This is just a matter of duplicating this CURL command: curl --request POST --url 'https://chilkat.auth0.com/oauth/token' \ --header 'content-type: application/json' \ --data '{"grant_type":"client_credentials","client_id": "xxxx","client_secret": "xxxx","audience": "https://api.example.com/geocoding/v1/"}'
#include <C_CkJsonObjectW.h> #include <C_CkHttpW.h> #include <C_CkHttpResponseW.h> void ChilkatSample(void) { HCkJsonObjectW json; HCkHttpW http; HCkHttpResponseW resp; HCkJsonObjectW jsonResp; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // We want to duplicate this curl command: // // curl --request POST // --url 'https://chilkat.auth0.com/oauth/token' \ // --header 'content-type: application/json' \ // --data '{"grant_type":"client_credentials","client_id": "my_client_id","client_secret": "my_client_secret","audience": "https://api.example.com/geocoding/v1/"}' // Build the JSON body of the request. json = CkJsonObjectW_Create(); CkJsonObjectW_UpdateString(json,L"grant_type",L"client_credentials"); CkJsonObjectW_UpdateString(json,L"client_id",L"AUTH0-CLIENT-ID"); CkJsonObjectW_UpdateString(json,L"client_secret",L"AUTH0-CLIENT-SECRET"); CkJsonObjectW_UpdateString(json,L"audience",L"https://api.example.com/geocoding/v1/"); // IMPORTANT: You would use your own url. You would not use "chilkat.auth0.com". // Instead you would use "your_name.auth0.com" http = CkHttpW_Create(); resp = CkHttpW_PostJson3(http,L"https://chilkat.auth0.com/oauth/token",L"application/json",json); if (CkHttpW_getLastMethodSuccess(http) != TRUE) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkJsonObjectW_Dispose(json); CkHttpW_Dispose(http); return; } // A 200 response status code indicates success. In the success case, the response body // contains the JSON access token, such as: // { // "access_token": "eyJz93a...k4laUWw", // "token_type":"Bearer", // "expires_in":86400 // } // wprintf(L"response status code = %d\n",CkHttpResponseW_getStatusCode(resp)); // The repsonse is JSON if successful and also JSON for errors. jsonResp = CkJsonObjectW_Create(); CkJsonObjectW_putEmitCompact(jsonResp,FALSE); CkJsonObjectW_Load(jsonResp,CkHttpResponseW_bodyStr(resp)); if (CkHttpResponseW_getStatusCode(resp) != 200) { // The response body contains error information in JSON format. wprintf(L"%s\n",CkJsonObjectW_emit(jsonResp)); CkHttpResponseW_Dispose(resp); // An example of an error response: // { // "error": "access_denied", // "error_description": "Client is not authorized to access \"https://api.example.com/geocoding/v1/\". You might probably want to create a \"client-grant\" associated to this API. See: https://auth0.com/docs/api/v2#!/Client_Grants/post_client_grants" // } CkJsonObjectW_Dispose(json); CkHttpW_Dispose(http); CkJsonObjectW_Dispose(jsonResp); return; } wprintf(L"Success!\n"); wprintf(L"%s\n",CkJsonObjectW_emit(jsonResp)); // A successful JSON response body looks like this: // { // "access_token": "eyJz93a...k4laUWw", // "token_type":"Bearer", // "expires_in":86400 // } CkHttpResponseW_Dispose(resp); CkJsonObjectW_Dispose(json); CkHttpW_Dispose(http); CkJsonObjectW_Dispose(jsonResp); } |
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