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using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Session;
using MediaBrowser.Model.Logging;
using ServiceStack.Web;
using System;
using System.Collections.Generic;
using System.Net.Http.Headers;
namespace MediaBrowser.Api
{
public class AuthorizationRequestFilterAttribute : Attribute, IHasRequestFilter
{
//This property will be resolved by the IoC container
/// <summary>
/// Gets or sets the user manager.
/// </summary>
/// <value>The user manager.</value>
public IUserManager UserManager { get; set; }
public ISessionManager SessionManager { get; set; }
/// <summary>
/// Gets or sets the logger.
/// </summary>
/// <value>The logger.</value>
public ILogger Logger { get; set; }
/// <summary>
/// The request filter is executed before the service.
/// </summary>
/// <param name="request">The http request wrapper</param>
/// <param name="response">The http response wrapper</param>
/// <param name="requestDto">The request DTO</param>
public void RequestFilter(IRequest request, IResponse response, object requestDto)
{
//This code is executed before the service
var auth = GetAuthorizationDictionary(request);
if (auth != null)
{
User user = null;
if (auth.ContainsKey("UserId"))
{
var userId = auth["UserId"];
if (!string.IsNullOrEmpty(userId))
{
user = UserManager.GetUserById(new Guid(userId));
}
}
string deviceId;
string device;
string client;
string version;
auth.TryGetValue("DeviceId", out deviceId);
auth.TryGetValue("Device", out device);
auth.TryGetValue("Client", out client);
auth.TryGetValue("Version", out version);
if (!string.IsNullOrEmpty(client) && !string.IsNullOrEmpty(deviceId) && !string.IsNullOrEmpty(device) && !string.IsNullOrEmpty(version))
{
SessionManager.LogSessionActivity(client, version, deviceId, device, user);
}
}
}
/// <summary>
/// Gets the auth.
/// </summary>
/// <param name="httpReq">The HTTP req.</param>
/// <returns>Dictionary{System.StringSystem.String}.</returns>
private static Dictionary<string, string> GetAuthorizationDictionary(IRequest httpReq)
{
var auth = httpReq.Headers["Authorization"];
return GetAuthorization(auth);
}
/// <summary>
/// Gets the authorization.
/// </summary>
/// <param name="httpReq">The HTTP req.</param>
/// <returns>Dictionary{System.StringSystem.String}.</returns>
public static AuthorizationInfo GetAuthorization(IRequest httpReq)
{
var auth = GetAuthorizationDictionary(httpReq);
string userId;
string deviceId;
string device;
string client;
string version;
auth.TryGetValue("UserId", out userId);
auth.TryGetValue("DeviceId", out deviceId);
auth.TryGetValue("Device", out device);
auth.TryGetValue("Client", out client);
auth.TryGetValue("Version", out version);
return new AuthorizationInfo
{
Client = client,
Device = device,
DeviceId = deviceId,
UserId = userId,
Version = version
};
}
/// <summary>
/// Gets the authorization.
/// </summary>
/// <param name="authorizationHeader">The authorization header.</param>
/// <returns>Dictionary{System.StringSystem.String}.</returns>
private static Dictionary<string, string> GetAuthorization(string authorizationHeader)
{
if (authorizationHeader == null) return null;
var parts = authorizationHeader.Split(' ');
// There should be at least to parts
if (parts.Length < 2) return null;
// It has to be a digest request
if (!string.Equals(parts[0], "MediaBrowser", StringComparison.OrdinalIgnoreCase))
{
return null;
}
// Remove uptil the first space
authorizationHeader = authorizationHeader.Substring(authorizationHeader.IndexOf(' '));
parts = authorizationHeader.Split(',');
var result = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
foreach (var item in parts)
{
var param = item.Trim().Split(new[] { '=' }, 2);
result.Add(param[0], param[1].Trim(new[] { '"' }));
}
return result;
}
/// <summary>
/// A new shallow copy of this filter is used on every request.
/// </summary>
/// <returns>IHasRequestFilter.</returns>
public IHasRequestFilter Copy()
{
return this;
}
/// <summary>
/// Order in which Request Filters are executed.
/// <0 Executed before global request filters
/// >0 Executed after global request filters
/// </summary>
/// <value>The priority.</value>
public int Priority
{
get { return 0; }
}
}
public class AuthorizationInfo
{
public string UserId;
public string DeviceId;
public string Device;
public string Client;
public string Version;
}
}
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