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(Visual FoxPro) Microsoft Graph Group OAuth2 Access TokenDemonstrates how to get a Microsoft Graph OAuth2 access token for the Group API from a desktop application or script. This example uses the Azure AD v2.0 Endpoint. See https://docs.microsoft.com/en-us/graph/api/resources/group?view=graph-rest-1.0 for more information.
LOCAL loOauth2 LOCAL lnSuccess LOCAL lcUrl LOCAL lnNumMsWaited LOCAL loJson LOCAL loDtExpire LOCAL loFac * This example requires the Chilkat API to have been previously unlocked. * See Global Unlock Sample for sample code. * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.OAuth2') loOauth2 = CreateObject('Chilkat.OAuth2') * This should be the port in the localhost callback URL for your app. * The callback URL would look like "http://localhost:3017/" if the port number is 3017. loOauth2.ListenPort = 3017 loOauth2.AuthorizationEndpoint = "https://login.microsoftonline.com/common/oauth2/v2.0/authorize" loOauth2.TokenEndpoint = "https://login.microsoftonline.com/common/oauth2/v2.0/token" * Replace these with actual values. loOauth2.ClientId = "MICROSOFT-GRAPH-CLIENT-ID" * This is your app password: loOauth2.ClientSecret = "MICROSOFT-GRAPH-CLIENT-SECRET" loOauth2.CodeChallenge = 0 * Provide a SPACE separated list of scopes. * See https://developer.microsoft.com/en-us/graph/docs/authorization/permission_scopes * Important: To get a refresh token in the final response, you must include the "offline_access" scope loOauth2.Scope = "openid profile offline_access user.readwrite group.readwrite.all files.readwrite" * Begin the OAuth2 three-legged flow. This returns a URL that should be loaded in a browser. lcUrl = loOauth2.StartAuth() IF (loOauth2.LastMethodSuccess <> 1) THEN ? loOauth2.LastErrorText RELEASE loOauth2 CANCEL ENDIF * 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 30 seconds. lnNumMsWaited = 0 DO WHILE (lnNumMsWaited < 30000) AND (loOauth2.AuthFlowState < 3) loOauth2.SleepMs(100) lnNumMsWaited = lnNumMsWaited + 100 ENDDO * 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 (loOauth2.AuthFlowState < 3) THEN loOauth2.Cancel() ? "No response from the browser!" RELEASE loOauth2 CANCEL ENDIF * 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 (loOauth2.AuthFlowState = 5) THEN ? "OAuth2 failed to complete." ? loOauth2.FailureInfo RELEASE loOauth2 CANCEL ENDIF IF (loOauth2.AuthFlowState = 4) THEN ? "OAuth2 authorization was denied." ? loOauth2.AccessTokenResponse RELEASE loOauth2 CANCEL ENDIF IF (loOauth2.AuthFlowState <> 3) THEN ? "Unexpected AuthFlowState:" + STR(loOauth2.AuthFlowState) RELEASE loOauth2 CANCEL ENDIF ? "OAuth2 authorization granted!" ? "Access Token = " + loOauth2.AccessToken * Get the full JSON response: * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject') loJson = CreateObject('Chilkat.JsonObject') loJson.Load(loOauth2.AccessTokenResponse) loJson.EmitCompact = 0 * The JSON response looks like this: * { * "token_type": "Bearer", * "scope": "openid profile User.ReadWrite Group.ReadWrite.All Files.ReadWrite User.Read", * "expires_in": 3600, * "ext_expires_in": 0, * "access_token": "EwBAA8l6B...", * "refresh_token": "MCRMdbe...", * "id_token": "eyJ0eXA..." * } * 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 (loJson.HasMember("expires_on") <> 1) THEN * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.CkDateTime') loDtExpire = CreateObject('Chilkat.CkDateTime') loDtExpire.SetFromCurrentSystemTime() loDtExpire.AddSeconds(loJson.IntOf("expires_in")) loJson.AppendString("expires_on",loDtExpire.GetAsUnixTimeStr(0)) ENDIF ? loJson.Emit() * Save the JSON to a file for future requests. * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.FileAccess') loFac = CreateObject('Chilkat.FileAccess') loFac.WriteEntireTextFile("qa_data/tokens/msGraphGroup.json",loJson.Emit(),"utf-8",0) RELEASE loOauth2 RELEASE loJson RELEASE loDtExpire RELEASE loFac |
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