74 lines
2.9 KiB
C#
74 lines
2.9 KiB
C#
using IdentityServer.PublishedLanguage.Dto;
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using IdentityServer.Wrapper.Services;
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using Microsoft.AspNetCore.Authentication;
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using Microsoft.Extensions.Logging;
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using Microsoft.Extensions.Options;
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using NDB.Security.Authentication.Identity.Abstractions;
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using System.Net.Http.Headers;
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using System.Security.Claims;
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using System.Text.Encodings.Web;
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using System.Threading.Tasks;
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namespace NDB.Security.Authentication.Identity
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{
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public class BasicAuthenticationHandler : AuthenticationHandler<AuthenticationSchemeOptions>
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{
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private readonly IIdentityService _identityService;
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private readonly IAuthenticationOptions _authenticationOptions;
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public BasicAuthenticationHandler(IOptionsMonitor<AuthenticationSchemeOptions> options, ILoggerFactory logger, UrlEncoder encoder, ISystemClock clock, IIdentityService identityService, IAuthenticationOptions authenticationOptions)
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: base(options, logger, encoder, clock)
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{
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_identityService = identityService;
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_authenticationOptions = authenticationOptions;
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}
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protected override async Task<AuthenticateResult> HandleAuthenticateAsync()
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{
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if (!Request.Headers.ContainsKey("Authorization"))
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{
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var authenticateAsGuest = _authenticationOptions.AuthenticateAsGuest?.Invoke(Request) ?? false;
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if (authenticateAsGuest)
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{
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var guestTicket = GetAuthenticationTicket(new User() { UserId = _authenticationOptions.GuestUserId, UserName = _authenticationOptions.GuestUserName });
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return AuthenticateResult.Success(guestTicket);
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}
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return AuthenticateResult.Fail("Missing Authorization Header");
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}
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User user;
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try
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{
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var authorizationHeader = AuthenticationHeaderValue.Parse(Request.Headers["Authorization"]);
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var token = authorizationHeader.Parameter;
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user = await _identityService.Authorize(token);
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}
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catch
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{
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return AuthenticateResult.Fail("Invalid Authorization Header");
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}
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if (user == null)
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return AuthenticateResult.Fail("Invalid Username or Password");
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var ticket = GetAuthenticationTicket(user);
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return AuthenticateResult.Success(ticket);
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}
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private AuthenticationTicket GetAuthenticationTicket(User user)
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{
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var claims = new[] {
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new Claim(ClaimTypes.NameIdentifier, user.UserId.ToString()),
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new Claim(ClaimTypes.Name, user.UserName),
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};
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var identity = new ClaimsIdentity(claims, Scheme.Name);
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var principal = new ClaimsPrincipal(identity);
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var ticket = new AuthenticationTicket(principal, Scheme.Name);
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return ticket;
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}
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}
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}
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