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(DataFlex) Dynamics CRM OAuth2 Access TokenDemonstrates how to get a Microsoft Dynamics CRM OAuth2 access token from a desktop (installed) application or script.
Use ChilkatAx-win32.pkg Procedure Test Handle hoOauth2 Boolean iSuccess String sUrl Handle hoHttp Variant vSbPreCheck Handle hoSbPreCheck Integer iNumMsWaited Handle hoJson Handle hoDtExpire Handle hoFac String sTemp1 Integer iTemp1 Boolean bTemp1 // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Get Create (RefClass(cComChilkatOAuth2)) To hoOauth2 If (Not(IsComObjectCreated(hoOauth2))) Begin Send CreateComObject of hoOauth2 End // 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. Set ComListenPort Of hoOauth2 To 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 Set ComAuthorizationEndpoint Of hoOauth2 To "https://login.microsoftonline.com/DYNAMICS-ENDPOINT-GUID/oauth2/authorize" Set ComTokenEndpoint Of hoOauth2 To "https://login.microsoftonline.com/DYNAMICS-ENDPOINT-GUID/oauth2/token" // Replace these with actual values. Set ComClientId Of hoOauth2 To "DYNAMICS-CRM-CLIENT-ID" Set ComClientSecret Of hoOauth2 To "DYNAMICS-CRM-SECRET-KEY" Set ComResource Of hoOauth2 To "https://mydynamicsdomain.api.crm.dynamics.com" Set ComRedirectAllowHtml Of hoOauth2 To "<html><body><p>Thank you for granting access.</p></bod></html>" Set ComRedirectDenyHtml Of hoOauth2 To "<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. Get ComStartAuth Of hoOauth2 To sUrl Get ComLastMethodSuccess Of hoOauth2 To bTemp1 If (bTemp1 <> True) Begin Get ComLastErrorText Of hoOauth2 To sTemp1 Showln sTemp1 Procedure_Return End // 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. Get Create (RefClass(cComChilkatHttp)) To hoHttp If (Not(IsComObjectCreated(hoHttp))) Begin Send CreateComObject of hoHttp End Get Create (RefClass(cComChilkatStringBuilder)) To hoSbPreCheck If (Not(IsComObjectCreated(hoSbPreCheck))) Begin Send CreateComObject of hoSbPreCheck End Get pvComObject of hoSbPreCheck to vSbPreCheck Get ComQuickGetSb Of hoHttp sUrl vSbPreCheck To iSuccess Get ComLastStatus Of hoHttp To iTemp1 Get ComStartsWith Of hoSbPreCheck "{" True To bTemp1 If ((iTemp1 <> 200) Or (bTemp1 <> True)) Begin Showln "JSON Error Response:" Get ComGetAsString Of hoSbPreCheck To sTemp1 Showln sTemp1 Procedure_Return End // If the HTTP request itself failed, then examine the error. If (iSuccess = False) Begin Get ComLastErrorText Of hoHttp To sTemp1 Showln sTemp1 Procedure_Return End // 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. Move 0 To iNumMsWaited While ((iNumMsWaited < 30000) And ((ComAuthFlowState(hoOauth2)) < 3)) Send ComSleepMs To hoOauth2 100 Move (iNumMsWaited + 100) To iNumMsWaited Loop // 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. Get ComAuthFlowState Of hoOauth2 To iTemp1 If (iTemp1 < 3) Begin Get ComCancel Of hoOauth2 To iSuccess Showln "No response from the browser!" Procedure_Return End // 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. Get ComAuthFlowState Of hoOauth2 To iTemp1 If (iTemp1 = 5) Begin Showln "OAuth2 failed to complete." Get ComFailureInfo Of hoOauth2 To sTemp1 Showln sTemp1 Procedure_Return End Get ComAuthFlowState Of hoOauth2 To iTemp1 If (iTemp1 = 4) Begin Showln "OAuth2 authorization was denied." Get ComAccessTokenResponse Of hoOauth2 To sTemp1 Showln sTemp1 Procedure_Return End Get ComAuthFlowState Of hoOauth2 To iTemp1 If (iTemp1 <> 3) Begin Get ComAuthFlowState Of hoOauth2 To iTemp1 Showln "Unexpected AuthFlowState:" iTemp1 Procedure_Return End Showln "OAuth2 authorization granted!" Get ComAccessToken Of hoOauth2 To sTemp1 Showln "Access Token = " sTemp1 // Get the full JSON response: Get Create (RefClass(cComChilkatJsonObject)) To hoJson If (Not(IsComObjectCreated(hoJson))) Begin Send CreateComObject of hoJson End Get ComAccessTokenResponse Of hoOauth2 To sTemp1 Get ComLoad Of hoJson sTemp1 To iSuccess Set ComEmitCompact Of hoJson To 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. Get ComHasMember Of hoJson "expires_on" To bTemp1 If (bTemp1 <> True) Begin Get Create (RefClass(cComCkDateTime)) To hoDtExpire If (Not(IsComObjectCreated(hoDtExpire))) Begin Send CreateComObject of hoDtExpire End Get ComSetFromCurrentSystemTime Of hoDtExpire To iSuccess Get ComIntOf Of hoJson "expires_in" To iTemp1 Get ComAddSeconds Of hoDtExpire iTemp1 To iSuccess Get ComGetAsUnixTimeStr Of hoDtExpire False To sTemp1 Get ComAppendString Of hoJson "expires_on" sTemp1 To iSuccess End Get ComEmit Of hoJson To sTemp1 Showln sTemp1 // Save the JSON to a file for future requests. Get Create (RefClass(cComCkFileAccess)) To hoFac If (Not(IsComObjectCreated(hoFac))) Begin Send CreateComObject of hoFac End Get ComEmit Of hoJson To sTemp1 Get ComWriteEntireTextFile Of hoFac "qa_data/tokens/dynamicsCrm.json" sTemp1 "utf-8" False To iSuccess End_Procedure |
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