Unicode C
Unicode C
Dynamics CRM OAuth2 Access Token
See more OAuth2 Examples
Demonstrates how to get a Microsoft Dynamics CRM OAuth2 access token from a desktop (installed) application or script.Chilkat Unicode C Downloads
#include <C_CkOAuth2W.h>
#include <C_CkHttpW.h>
#include <C_CkStringBuilderW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkDateTimeW.h>
#include <C_CkFileAccessW.h>
void ChilkatSample(void)
{
BOOL success;
HCkOAuth2W oauth2;
const wchar_t *url;
HCkHttpW http;
HCkStringBuilderW sbPreCheck;
int numMsWaited;
HCkJsonObjectW json;
HCkDateTimeW dtExpire;
HCkFileAccessW fac;
success = FALSE;
// To further clarify, see OAuth 2.0 Authorization Flow
oauth2 = CkOAuth2W_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.
CkOAuth2W_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
CkOAuth2W_putAuthorizationEndpoint(oauth2,L"https://login.microsoftonline.com/DYNAMICS-ENDPOINT-GUID/oauth2/authorize");
CkOAuth2W_putTokenEndpoint(oauth2,L"https://login.microsoftonline.com/DYNAMICS-ENDPOINT-GUID/oauth2/token");
// Replace these with actual values.
CkOAuth2W_putClientId(oauth2,L"DYNAMICS-CRM-CLIENT-ID");
CkOAuth2W_putClientSecret(oauth2,L"DYNAMICS-CRM-SECRET-KEY");
CkOAuth2W_putResource(oauth2,L"https://mydynamicsdomain.api.crm.dynamics.com");
CkOAuth2W_putRedirectAllowHtml(oauth2,L"<html><body><p>Thank you for granting access.</p></bod></html>");
CkOAuth2W_putRedirectDenyHtml(oauth2,L"<html><body><p>Maybe next time...</p></bod></html>");
// Begin the OAuth2 Authorization code 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;
}
// 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 = CkHttpW_Create();
sbPreCheck = CkStringBuilderW_Create();
success = CkHttpW_QuickGetSb(http,url,sbPreCheck);
if ((CkHttpW_getLastStatus(http) != 200) || (CkStringBuilderW_StartsWith(sbPreCheck,L"{",TRUE) != TRUE)) {
wprintf(L"JSON Error Response:\n");
wprintf(L"%s\n",CkStringBuilderW_getAsString(sbPreCheck));
CkOAuth2W_Dispose(oauth2);
CkHttpW_Dispose(http);
CkStringBuilderW_Dispose(sbPreCheck);
return;
}
// If the HTTP request itself failed, then examine the error.
if (success == FALSE) {
wprintf(L"%s\n",CkHttpW_lastErrorText(http));
CkOAuth2W_Dispose(oauth2);
CkHttpW_Dispose(http);
CkStringBuilderW_Dispose(sbPreCheck);
return;
}
// OK.. the pre-flight check seems OK, go ahead with getting the interactive user authorization..
// Launch the default browser on the system and navigate to the url.
// The LaunchBrowser method was added in Chilkat v10.1.2.
success = CkOAuth2W_LaunchBrowser(oauth2,url);
if (success == FALSE) {
wprintf(L"%s\n",CkOAuth2W_lastErrorText(oauth2));
CkOAuth2W_Dispose(oauth2);
CkHttpW_Dispose(http);
CkStringBuilderW_Dispose(sbPreCheck);
return;
}
// Wait for the user to approve or deny authorization in the browser.
numMsWaited = 0;
while ((numMsWaited < 90000) && (CkOAuth2W_getAuthFlowState(oauth2) < 3)) {
CkOAuth2W_SleepMs(oauth2,100);
numMsWaited = numMsWaited + 100;
}
// If the browser does not respond within the specified time, AuthFlowState will be:
//
// 1: Waiting for Redirect – The OAuth2 background thread is waiting for the browser's redirect request.
// 2: Waiting for Final Response – The thread is awaiting the final access token response.
// In either case, cancel the background task initiated by StartAuth.
if (CkOAuth2W_getAuthFlowState(oauth2) < 3) {
CkOAuth2W_Cancel(oauth2);
wprintf(L"No response from the browser!\n");
CkOAuth2W_Dispose(oauth2);
CkHttpW_Dispose(http);
CkStringBuilderW_Dispose(sbPreCheck);
return;
}
// Check AuthFlowState to determine if authorization was granted, denied, or failed:
//
// 3: Success – OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
// 4: Access Denied – OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
// 5: Failure – OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.
if (CkOAuth2W_getAuthFlowState(oauth2) == 5) {
wprintf(L"OAuth2 failed to complete.\n");
wprintf(L"%s\n",CkOAuth2W_failureInfo(oauth2));
CkOAuth2W_Dispose(oauth2);
CkHttpW_Dispose(http);
CkStringBuilderW_Dispose(sbPreCheck);
return;
}
if (CkOAuth2W_getAuthFlowState(oauth2) == 4) {
wprintf(L"OAuth2 authorization was denied.\n");
wprintf(L"%s\n",CkOAuth2W_accessTokenResponse(oauth2));
CkOAuth2W_Dispose(oauth2);
CkHttpW_Dispose(http);
CkStringBuilderW_Dispose(sbPreCheck);
return;
}
if (CkOAuth2W_getAuthFlowState(oauth2) != 3) {
wprintf(L"Unexpected AuthFlowState:%d\n",CkOAuth2W_getAuthFlowState(oauth2));
CkOAuth2W_Dispose(oauth2);
CkHttpW_Dispose(http);
CkStringBuilderW_Dispose(sbPreCheck);
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",
// "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 (CkJsonObjectW_HasMember(json,L"expires_on") != TRUE) {
dtExpire = CkDateTimeW_Create();
CkDateTimeW_SetFromCurrentSystemTime(dtExpire);
CkDateTimeW_AddSeconds(dtExpire,CkJsonObjectW_IntOf(json,L"expires_in"));
CkJsonObjectW_AppendString(json,L"expires_on",CkDateTimeW_getAsUnixTimeStr(dtExpire,FALSE));
}
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/dynamicsCrm.json",CkJsonObjectW_emit(json),L"utf-8",FALSE);
CkOAuth2W_Dispose(oauth2);
CkHttpW_Dispose(http);
CkStringBuilderW_Dispose(sbPreCheck);
CkJsonObjectW_Dispose(json);
CkDateTimeW_Dispose(dtExpire);
CkFileAccessW_Dispose(fac);
}