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(MFC) Dynamics CRM OAuth2 Access TokenDemonstrates how to get a Microsoft Dynamics CRM OAuth2 access token from a desktop (installed) application or script.
#include <CkOAuth2.h> #include <CkHttp.h> #include <CkStringBuilder.h> #include <CkJsonObject.h> #include <CkDateTime.h> #include <CkFileAccess.h> void ChilkatSample(void) { CkString strOut; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkOAuth2 oauth2; bool success; // This should be the port in the localhost redirect URL for your app. // Important: Make sure the redirect URI in your Azure app registration // is exactly "http://localhost:3017/". Don't forget the ending "/" char. // The redirect URL would look like "http://localhost:3017/" if the port number is 3017. oauth2.put_ListenPort(3017); // Get the endpoints from the Azure Portal in the "endpoints" section of App Registrations.. // The DYNAMICS-ENDPOINT-GUID is a Tenant dynamics-endpoint-guid such as 1b54e7ee-d61b-4f12-a621-a6b2805b98c2 oauth2.put_AuthorizationEndpoint("https://login.microsoftonline.com/DYNAMICS-ENDPOINT-GUID/oauth2/authorize"); oauth2.put_TokenEndpoint("https://login.microsoftonline.com/DYNAMICS-ENDPOINT-GUID/oauth2/token"); // Replace these with actual values. oauth2.put_ClientId("DYNAMICS-CRM-CLIENT-ID"); oauth2.put_ClientSecret("DYNAMICS-CRM-SECRET-KEY"); oauth2.put_Resource("https://mydynamicsdomain.api.crm.dynamics.com"); oauth2.put_RedirectAllowHtml("<html><body><p>Thank you for granting access.</p></bod></html>"); oauth2.put_RedirectDenyHtml("<html><body><p>Maybe next time...</p></bod></html>"); // Begin the OAuth2 three-legged flow. This returns a URL that should be loaded in a browser. const char *url = oauth2.startAuth(); if (oauth2.get_LastMethodSuccess() != true) { strOut.append(oauth2.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // We can pre-check the URL by sending a GET to catch any up-front errors. // If we receive JSON with an error in response, then we don't proceed any farther. // If we receive an HTML response, and the response status = 200, then all should be OK. // We can proceed by displaying an interactive browser loaded with the url. CkHttp http; CkStringBuilder sbPreCheck; success = http.QuickGetSb(url,sbPreCheck); if ((http.get_LastStatus() != 200) || (sbPreCheck.StartsWith("{",true) != true)) { strOut.append("JSON Error Response:"); strOut.append("\r\n"); strOut.append(sbPreCheck.getAsString()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // If the HTTP request itself failed, then examine the error. if (success == false) { strOut.append(http.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // OK.. the pre-flight check seems OK, go ahead with getting the interactive user authorization.. // 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 GitHub 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 30 seconds. int numMsWaited = 0; while ((numMsWaited < 30000) && (oauth2.get_AuthFlowState() < 3)) { oauth2.SleepMs(100); numMsWaited = numMsWaited + 100; } // If there was no response from the browser within 30 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 (oauth2.get_AuthFlowState() < 3) { oauth2.Cancel(); strOut.append("No response from the browser!"); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); 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 (oauth2.get_AuthFlowState() == 5) { strOut.append("OAuth2 failed to complete."); strOut.append("\r\n"); strOut.append(oauth2.failureInfo()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } if (oauth2.get_AuthFlowState() == 4) { strOut.append("OAuth2 authorization was denied."); strOut.append("\r\n"); strOut.append(oauth2.accessTokenResponse()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } if (oauth2.get_AuthFlowState() != 3) { strOut.append("Unexpected AuthFlowState:"); strOut.appendInt(oauth2.get_AuthFlowState()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } strOut.append("OAuth2 authorization granted!"); strOut.append("\r\n"); strOut.append("Access Token = "); strOut.append(oauth2.accessToken()); strOut.append("\r\n"); // Get the full JSON response: CkJsonObject json; json.Load(oauth2.accessTokenResponse()); json.put_EmitCompact(false); // The JSON response looks like this: // { // "token_type": "Bearer", // "scope": "user_impersonation", // "expires_in": "3599", // "ext_expires_in": "0", // "expires_on": "1524783438", // "not_before": "1524779538", // "resource": "https://mydomain.api.crm.dynamics.com", // "access_token": "...", // "refresh_token": "...", // "id_token": "..." // } // If an "expires_on" member does not exist, then add the JSON member by // getting the current system date/time and adding the "expires_in" seconds. // This way we'll know when the token expires. if (json.HasMember("expires_on") != true) { CkDateTime dtExpire; dtExpire.SetFromCurrentSystemTime(); dtExpire.AddSeconds(json.IntOf("expires_in")); json.AppendString("expires_on",dtExpire.getAsUnixTimeStr(false)); } strOut.append(json.emit()); strOut.append("\r\n"); // Save the JSON to a file for future requests. CkFileAccess fac; fac.WriteEntireTextFile("qa_data/tokens/dynamicsCrm.json",json.emit(),"utf-8",false); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); } |
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