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Doc | Sync sample changes into snippet doc #2837

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Sep 16, 2024
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Doc | Sync sample changes into snippet doc #2837

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59 changes: 39 additions & 20 deletions doc/snippets/Microsoft.Data.SqlClient/SqlAuthenticationProvider.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -9,10 +9,12 @@
The following example demonstrates implementing a custom SqlAuthenticationProvider and providing the same to SqlClient for overriding Device Code Flow authentication mode:
<code language="c#">
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.Identity.Client;
using Microsoft.Data.SqlClient;

using Microsoft.Identity.Client;

namespace CustomAuthenticationProviderExamples
{
/// &lt;summary&gt;
Expand All @@ -21,35 +23,52 @@
/// &lt;/summary&gt;
public class CustomDeviceCodeFlowAzureAuthenticationProvider : SqlAuthenticationProvider
{
private const string clientId = "my-client-id";
private const string clientName = "My Application Name";
private const string s_defaultScopeSuffix = "/.default";

// Maintain a copy of the PublicClientApplication object to cache the underlying access tokens it provides
private static IPublicClientApplication pcApplication;

public override async Task&lt;SqlAuthenticationToken&gt; AcquireTokenAsync(SqlAuthenticationParameters parameters)
{
string clientId = "my-client-id";
string clientName = "My Application Name";
string s_defaultScopeSuffix = "/.default";

string[] scopes = new string[] { parameters.Resource.EndsWith(s_defaultScopeSuffix) ? parameters.Resource : parameters.Resource + s_defaultScopeSuffix };

IPublicClientApplication app = PublicClientApplicationBuilder.Create(clientId)
.WithAuthority(parameters.Authority)
.WithClientName(clientName)
.WithRedirectUri("https://login.microsoftonline.com/common/oauth2/nativeclient")

IPublicClientApplication app = pcApplication;
if (app == null)
{
pcApplication = app = PublicClientApplicationBuilder.Create(clientId)
.WithAuthority(parameters.Authority)
.WithClientName(clientName)
.WithRedirectUri("https://login.microsoftonline.com/common/oauth2/nativeclient")
.Build();

AuthenticationResult result = await app.AcquireTokenWithDeviceCode(scopes,
deviceCodeResult => CustomDeviceFlowCallback(deviceCodeResult)).ExecuteAsync();
}

AuthenticationResult result;

try
{
IEnumerable&lt;IAccount&gt; accounts = await app.GetAccountsAsync();
result = await app.AcquireTokenSilent(scopes, accounts.FirstOrDefault()).ExecuteAsync();
}
catch (MsalUiRequiredException)
{
result = await app.AcquireTokenWithDeviceCode(scopes,
deviceCodeResult => CustomDeviceFlowCallback(deviceCodeResult)).ExecuteAsync();
}

return new SqlAuthenticationToken(result.AccessToken, result.ExpiresOn);
}

public override bool IsSupported(SqlAuthenticationMethod authenticationMethod) =>
authenticationMethod.Equals(SqlAuthenticationMethod.ActiveDirectoryDeviceCodeFlow);

private Task CustomDeviceFlowCallback(DeviceCodeResult result)

public override bool IsSupported(SqlAuthenticationMethod authenticationMethod) => authenticationMethod.Equals(SqlAuthenticationMethod.ActiveDirectoryDeviceCodeFlow);

private static Task&lt;int&gt; CustomDeviceFlowCallback(DeviceCodeResult result)
{
Console.WriteLine(result.Message);
return Task.FromResult(0);
}
}

public class Program
{
public static void Main()
Expand Down