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(Unicode C) Twitter API v2 - Get OAuth2 Access TokenSee more Twitter API v2 ExamplesDemonstrates how to get a Twitter API v2 OAuth2 access token from a desktop application or script. For more information, see https://developer.twitter.com/en/docs/authentication/oauth-2-0/user-access-token
#include <C_CkOAuth2W.h> #include <C_CkJsonObjectW.h> #include <C_CkFileAccessW.h> void ChilkatSample(void) { HCkOAuth2W oauth2; BOOL success; const wchar_t *url; int numMsWaited; HCkJsonObjectW json; HCkFileAccessW fac; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. oauth2 = CkOAuth2W_Create(); // This should be the port in the localhost callback URI for your App (defined in the Twitter Developer Portal) // The Callback URI / Redirect URL should be "http://localhost:3017/" if the port number is 3017. CkOAuth2W_putListenPort(oauth2,3017); CkOAuth2W_putAuthorizationEndpoint(oauth2,L"https://twitter.com/i/oauth2/authorize"); CkOAuth2W_putTokenEndpoint(oauth2,L"https://api.twitter.com/2/oauth2/token"); // Replace these with actual values. CkOAuth2W_putClientId(oauth2,L"CLIENT_ID"); CkOAuth2W_putClientSecret(oauth2,L"CLIENT_SECRET"); CkOAuth2W_putScope(oauth2,L"tweet.read users.read follows.read follows.write"); CkOAuth2W_AddAuthQueryParam(oauth2,L"offline.access",L""); CkOAuth2W_AddAuthQueryParam(oauth2,L"state",L"state"); CkOAuth2W_putCodeChallenge(oauth2,TRUE); CkOAuth2W_putCodeChallengeMethod(oauth2,L"plain"); CkOAuth2W_putUseBasicAuth(oauth2,TRUE); // Begin the OAuth2 three-legged flow. This returns a URL that should be loaded in a browser. url = CkOAuth2W_startAuth(oauth2); if (CkOAuth2W_getLastMethodSuccess(oauth2) != TRUE) { wprintf(L"%s\n",CkOAuth2W_lastErrorText(oauth2)); CkOAuth2W_Dispose(oauth2); return; } wprintf(L"%s\n",url); // At this point, your application should load the URL in a browser. // For example, // in C#: System.Diagnostics.Process.Start(url); // in Java: Desktop.getDesktop().browse(new URI(url)); // in VBScript: Set wsh=WScript.CreateObject("WScript.Shell") // wsh.Run url // in Xojo: ShowURL(url) (see http://docs.xojo.com/index.php/ShowURL) // in Dataflex: Runprogram Background "c:\Program Files\Internet Explorer\iexplore.exe" sUrl // The Microsoft account owner would interactively accept or deny the authorization request. // Add the code to load the url in a web browser here... // Add the code to load the url in a web browser here... // Add the code to load the url in a web browser here... // Now wait for the authorization. // We'll wait for a max of 60 seconds. numMsWaited = 0; while ((numMsWaited < 60000) && (CkOAuth2W_getAuthFlowState(oauth2) < 3)) { CkOAuth2W_SleepMs(oauth2,100); numMsWaited = numMsWaited + 100; } // If there was no response from the browser within 60 seconds, then // the AuthFlowState will be equal to 1 or 2. // 1: Waiting for Redirect. The OAuth2 background thread is waiting to receive the redirect HTTP request from the browser. // 2: Waiting for Final Response. The OAuth2 background thread is waiting for the final access token response. // In that case, cancel the background task started in the call to StartAuth. if (CkOAuth2W_getAuthFlowState(oauth2) < 3) { CkOAuth2W_Cancel(oauth2); wprintf(L"No response from the browser!\n"); CkOAuth2W_Dispose(oauth2); return; } // Check the AuthFlowState to see if authorization was granted, denied, or if some error occurred // The possible AuthFlowState values are: // 3: Completed with Success. The OAuth2 flow has completed, the background thread exited, and the successful JSON response is available in AccessTokenResponse property. // 4: Completed with Access Denied. The OAuth2 flow has completed, the background thread exited, and the error JSON is available in AccessTokenResponse property. // 5: Failed Prior to Completion. The OAuth2 flow failed to complete, the background thread exited, and the error information is available in the FailureInfo property. if (CkOAuth2W_getAuthFlowState(oauth2) == 5) { wprintf(L"OAuth2 failed to complete.\n"); wprintf(L"%s\n",CkOAuth2W_failureInfo(oauth2)); CkOAuth2W_Dispose(oauth2); return; } if (CkOAuth2W_getAuthFlowState(oauth2) == 4) { wprintf(L"OAuth2 authorization was denied.\n"); wprintf(L"%s\n",CkOAuth2W_accessTokenResponse(oauth2)); CkOAuth2W_Dispose(oauth2); return; } if (CkOAuth2W_getAuthFlowState(oauth2) != 3) { wprintf(L"Unexpected AuthFlowState:%d\n",CkOAuth2W_getAuthFlowState(oauth2)); CkOAuth2W_Dispose(oauth2); return; } wprintf(L"OAuth2 authorization granted!\n"); wprintf(L"Access Token = %s\n",CkOAuth2W_accessToken(oauth2)); // Get the full JSON response: json = CkJsonObjectW_Create(); CkJsonObjectW_Load(json,CkOAuth2W_accessTokenResponse(oauth2)); CkJsonObjectW_putEmitCompact(json,FALSE); // The JSON response looks like this: // { // "token_type": "bearer", // "expires_in": 7200, // "access_token": "NnAfRUxCVWhLNDB3MFRvd25yQlNnelRZY1F1WkFlQqVfNXYwOEVobVNqR0VfOjf2NTg4NDk0MjMxnzE6MTowOmF2OjE", // "scope": "users.read follows.read tweet.read follows.write" // } wprintf(L"%s\n",CkJsonObjectW_emit(json)); // Save the JSON to a file for future requests. fac = CkFileAccessW_Create(); CkFileAccessW_WriteEntireTextFile(fac,L"qa_data/tokens/twitter_v2_oauth2.json",CkJsonObjectW_emit(json),L"utf-8",FALSE); CkOAuth2W_Dispose(oauth2); CkJsonObjectW_Dispose(json); CkFileAccessW_Dispose(fac); } |
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