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(C) Dynamics CRM OAuth2 Access TokenDemonstrates how to get a Microsoft Dynamics CRM OAuth2 access token from a desktop (installed) application or script.
#include <C_CkOAuth2.h> #include <C_CkHttp.h> #include <C_CkStringBuilder.h> #include <C_CkJsonObject.h> #include <C_CkDateTime.h> #include <C_CkFileAccess.h> void ChilkatSample(void) { HCkOAuth2 oauth2; BOOL success; const char *url; HCkHttp http; HCkStringBuilder sbPreCheck; int numMsWaited; HCkJsonObject json; HCkDateTime dtExpire; HCkFileAccess fac; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. oauth2 = CkOAuth2_Create(); // 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. CkOAuth2_putListenPort(oauth2,3017); // 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 CkOAuth2_putAuthorizationEndpoint(oauth2,"https://login.microsoftonline.com/DYNAMICS-ENDPOINT-GUID/oauth2/authorize"); CkOAuth2_putTokenEndpoint(oauth2,"https://login.microsoftonline.com/DYNAMICS-ENDPOINT-GUID/oauth2/token"); // Replace these with actual values. CkOAuth2_putClientId(oauth2,"DYNAMICS-CRM-CLIENT-ID"); CkOAuth2_putClientSecret(oauth2,"DYNAMICS-CRM-SECRET-KEY"); CkOAuth2_putResource(oauth2,"https://mydynamicsdomain.api.crm.dynamics.com"); CkOAuth2_putRedirectAllowHtml(oauth2,"<html><body><p>Thank you for granting access.</p></bod></html>"); CkOAuth2_putRedirectDenyHtml(oauth2,"<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. url = CkOAuth2_startAuth(oauth2); if (CkOAuth2_getLastMethodSuccess(oauth2) != TRUE) { printf("%s\n",CkOAuth2_lastErrorText(oauth2)); CkOAuth2_Dispose(oauth2); 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. http = CkHttp_Create(); sbPreCheck = CkStringBuilder_Create(); success = CkHttp_QuickGetSb(http,url,sbPreCheck); if ((CkHttp_getLastStatus(http) != 200) || (CkStringBuilder_StartsWith(sbPreCheck,"{",TRUE) != TRUE)) { printf("JSON Error Response:\n"); printf("%s\n",CkStringBuilder_getAsString(sbPreCheck)); CkOAuth2_Dispose(oauth2); CkHttp_Dispose(http); CkStringBuilder_Dispose(sbPreCheck); return; } // If the HTTP request itself failed, then examine the error. if (success == FALSE) { printf("%s\n",CkHttp_lastErrorText(http)); CkOAuth2_Dispose(oauth2); CkHttp_Dispose(http); CkStringBuilder_Dispose(sbPreCheck); 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. numMsWaited = 0; while ((numMsWaited < 30000) && (CkOAuth2_getAuthFlowState(oauth2) < 3)) { CkOAuth2_SleepMs(oauth2,100); 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 (CkOAuth2_getAuthFlowState(oauth2) < 3) { CkOAuth2_Cancel(oauth2); printf("No response from the browser!\n"); CkOAuth2_Dispose(oauth2); CkHttp_Dispose(http); CkStringBuilder_Dispose(sbPreCheck); 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 (CkOAuth2_getAuthFlowState(oauth2) == 5) { printf("OAuth2 failed to complete.\n"); printf("%s\n",CkOAuth2_failureInfo(oauth2)); CkOAuth2_Dispose(oauth2); CkHttp_Dispose(http); CkStringBuilder_Dispose(sbPreCheck); return; } if (CkOAuth2_getAuthFlowState(oauth2) == 4) { printf("OAuth2 authorization was denied.\n"); printf("%s\n",CkOAuth2_accessTokenResponse(oauth2)); CkOAuth2_Dispose(oauth2); CkHttp_Dispose(http); CkStringBuilder_Dispose(sbPreCheck); return; } if (CkOAuth2_getAuthFlowState(oauth2) != 3) { printf("Unexpected AuthFlowState:%d\n",CkOAuth2_getAuthFlowState(oauth2)); CkOAuth2_Dispose(oauth2); CkHttp_Dispose(http); CkStringBuilder_Dispose(sbPreCheck); return; } printf("OAuth2 authorization granted!\n"); printf("Access Token = %s\n",CkOAuth2_accessToken(oauth2)); // Get the full JSON response: json = CkJsonObject_Create(); CkJsonObject_Load(json,CkOAuth2_accessTokenResponse(oauth2)); CkJsonObject_putEmitCompact(json,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 (CkJsonObject_HasMember(json,"expires_on") != TRUE) { dtExpire = CkDateTime_Create(); CkDateTime_SetFromCurrentSystemTime(dtExpire); CkDateTime_AddSeconds(dtExpire,CkJsonObject_IntOf(json,"expires_in")); CkJsonObject_AppendString(json,"expires_on",CkDateTime_getAsUnixTimeStr(dtExpire,FALSE)); } printf("%s\n",CkJsonObject_emit(json)); // Save the JSON to a file for future requests. fac = CkFileAccess_Create(); CkFileAccess_WriteEntireTextFile(fac,"qa_data/tokens/dynamicsCrm.json",CkJsonObject_emit(json),"utf-8",FALSE); CkOAuth2_Dispose(oauth2); CkHttp_Dispose(http); CkStringBuilder_Dispose(sbPreCheck); CkJsonObject_Dispose(json); CkDateTime_Dispose(dtExpire); CkFileAccess_Dispose(fac); } |
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