public async Task <OAuth2TokenResult> GetOAuthTokenViaBrowserAsync(Uri targetUri, IEnumerable <string> scopes)
{
ThrowIfUserInteractionDisabled();
var oauthClient = new GitHubOAuth2Client(HttpClient, Context.Settings, targetUri);
// We require a desktop session to launch the user's default web browser
if (!Context.SessionManager.IsDesktopSession)
{
throw new InvalidOperationException("Browser authentication requires a desktop session");
}
var browserOptions = new OAuth2WebBrowserOptions
{
SuccessResponseHtml = GitHubResources.AuthenticationResponseSuccessHtml,
FailureResponseHtmlFormat = GitHubResources.AuthenticationResponseFailureHtmlFormat
};
var browser = new OAuth2SystemWebBrowser(Context.Environment, browserOptions);
// Write message to the terminal (if any is attached) for some feedback that we're waiting for a web response
Context.Terminal.WriteLine("info: please complete authentication in your browser...");
OAuth2AuthorizationCodeResult authCodeResult =
await oauthClient.GetAuthorizationCodeAsync(scopes, browser, CancellationToken.None);
return(await oauthClient.GetTokenByAuthorizationCodeAsync(authCodeResult, CancellationToken.None));
}
public async Task <OAuth2TokenResult> GetOAuthTokenViaDeviceCodeAsync(Uri targetUri, IEnumerable <string> scopes)
{
ThrowIfUserInteractionDisabled();
var oauthClient = new GitHubOAuth2Client(HttpClient, Context.Settings, targetUri);
OAuth2DeviceCodeResult dcr = await oauthClient.GetDeviceCodeAsync(scopes, CancellationToken.None);
// If we have a desktop session show the device code in a dialog
if (Context.Settings.IsGuiPromptsEnabled && Context.SessionManager.IsDesktopSession &&
TryFindHelperExecutablePath(out string helperPath))
{
var args = new StringBuilder("device");
args.AppendFormat(" --code {0} ", QuoteCmdArg(dcr.UserCode));
args.AppendFormat(" --url {0}", QuoteCmdArg(dcr.VerificationUri.ToString()));
var promptCts = new CancellationTokenSource();
var tokenCts = new CancellationTokenSource();
// Show the dialog with the device code but don't await its closure
Task promptTask = InvokeHelperAsync(helperPath, args.ToString(), null, promptCts.Token);
// Start the request for an OAuth token but don't wait
Task <OAuth2TokenResult> tokenTask = oauthClient.GetTokenByDeviceCodeAsync(dcr, tokenCts.Token);
Task t = await Task.WhenAny(promptTask, tokenTask);
// If the dialog was closed the user wishes to cancel the request
if (t == promptTask)
{
tokenCts.Cancel();
}
OAuth2TokenResult tokenResult;
try
{
tokenResult = await tokenTask;
}
catch (OperationCanceledException)
{
throw new Exception("User canceled device code authentication");
}
// Close the dialog
promptCts.Cancel();
return(tokenResult);
}
else
{
ThrowIfTerminalPromptsDisabled();
string deviceMessage = $"To complete authentication please visit {dcr.VerificationUri} and enter the following code:" +
Environment.NewLine +
dcr.UserCode;
Context.Terminal.WriteLine(deviceMessage);
return(await oauthClient.GetTokenByDeviceCodeAsync(dcr, CancellationToken.None));
}
}
public async Task <OAuth2TokenResult> GetOAuthTokenAsync(Uri targetUri, IEnumerable <string> scopes)
{
ThrowIfUserInteractionDisabled();
var oauthClient = new GitHubOAuth2Client(HttpClient, Context.Settings, targetUri);
// If we have a desktop session try authentication using the user's default web browser
if (Context.SessionManager.IsDesktopSession)
{
var browserOptions = new OAuth2WebBrowserOptions
{
SuccessResponseHtml = GitHubResources.AuthenticationResponseSuccessHtml,
FailureResponseHtmlFormat = GitHubResources.AuthenticationResponseFailureHtmlFormat
};
var browser = new OAuth2SystemWebBrowser(browserOptions);
// Write message to the terminal (if any is attached) for some feedback that we're waiting for a web response
Context.Terminal.WriteLine("info: please complete authentication in your browser...");
OAuth2AuthorizationCodeResult authCodeResult = await oauthClient.GetAuthorizationCodeAsync(scopes, browser, CancellationToken.None);
return(await oauthClient.GetTokenByAuthorizationCodeAsync(authCodeResult, CancellationToken.None));
}
else
{
ThrowIfTerminalPromptsDisabled();
if (GitHubConstants.IsOAuthDeviceAuthSupported)
{
OAuth2DeviceCodeResult deviceCodeResult = await oauthClient.GetDeviceCodeAsync(scopes, CancellationToken.None);
string deviceMessage = $"To complete authentication please visit {deviceCodeResult.VerificationUri} and enter the following code:" +
Environment.NewLine +
deviceCodeResult.UserCode;
Context.Terminal.WriteLine(deviceMessage);
return(await oauthClient.GetTokenByDeviceCodeAsync(deviceCodeResult, CancellationToken.None));
}
// We'd like to try using an OAuth2 flow that does not require a web browser on this device
// such as the device code flow (RFC 8628) but GitHub's auth stack does not support this.
throw new NotSupportedException("GitHub OAuth authentication is not supported without an interactive desktop session.");
}
}