[server] Start building user/rbac system.

Nibriboard/Nibriboard.csproj

@@ -54,6 +54,9 @@
 		<Reference Include="GlidingSquirrel">
 		  <HintPath>..\packages\GlidingSquirrel.0.6.1-alpha\lib\net462\GlidingSquirrel.dll</HintPath>
 		</Reference>
+		<Reference Include="SimpleHashing.Net">
+		  <HintPath>..\packages\SimpleHashing.Net.1.0.1\lib\SimpleHashing.Net.dll</HintPath>
+		</Reference>
 	</ItemGroup>
 	<Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
 	
@@ -145,6 +148,10 @@
 		<Compile Include="Client\Messages\LineRemoveMessage.cs" />
 		<Compile Include="CommandConsole.cs" />
 		<Compile Include="Utilities\Formatters.cs" />
+		<Compile Include="Userspace\UserManager.cs" />
+		<Compile Include="Userspace\RbacPermission.cs" />
+		<Compile Include="Userspace\RbacRole.cs" />
+		<Compile Include="Userspace\User.cs" />
 	</ItemGroup>
 	<ItemGroup>
 		<EmbeddedResource Include="commit-hash.txt" />
@@ -169,6 +176,7 @@
 		<Folder Include="ClientFiles\" />
 		<Folder Include="Client\" />
 		<Folder Include="Client\Messages\" />
+		<Folder Include="Userspace\" />
 	</ItemGroup>
 	<ItemGroup>
 		<None Include="packages.config" />

Nibriboard/Userspace/RbacPermission.cs

@@ -0,0 +1,33 @@
+using System;
+
+namespace Nibriboard.Userspace
+{
+	public class RbacPermission
+	{
+		public readonly string Name;
+		public readonly string Description;
+
+		public RbacPermission(string inName, string inDescription)
+		{
+			Name = inName;
+			Description = inDescription;
+		}
+
+		public override bool Equals(object obj)
+		{
+			RbacPermission otherPermission = obj as RbacPermission;
+			if (obj == null)
+				return false;
+			return Name == otherPermission.Name;
+		}
+		public override int GetHashCode()
+		{
+			return ToString().GetHashCode();
+		}
+		public override string ToString()
+		{
+			return $"[RbacPermission -> {Name}: {Description}]";
+		}
+	}
+
+}

Nibriboard/Userspace/RbacRole.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Linq;
+using System.Collections.Generic;
+
+namespace Nibriboard.Userspace
+{
+	public class RbacRole
+	{
+		public readonly string Name;
+
+		public readonly List<RbacRole> SubRoles = new List<RbacRole>();
+		public readonly List<RbacPermission> Permissions = new List<RbacPermission>();
+
+		public RbacRole()
+		{
+		}
+		public RbacRole(string inRoleName, List<RbacPermission> inPermissions) : this(inRoleName, inPermissions, new List<RbacRole>())
+		{
+		}
+		public RbacRole(string inRoleName, List<RbacPermission> inPermissions, List<RbacRole> inSubRoles)
+		{
+			Name = inRoleName;
+			Permissions = inPermissions;
+			SubRoles = inSubRoles;
+		}
+
+		public bool HasPermission(RbacPermission permission)
+		{
+			return Permissions.Contains(permission) || SubRoles.Any((RbacRole obj) => obj.HasPermission(permission));
+		}
+	}
+}

Nibriboard/Userspace/User.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+using SimpleHashing.Net;
+
+namespace Nibriboard.Userspace
+{
+	public class User
+	{
+		private static ISimpleHash passwordHasher = new SimpleHash();
+
+		public DateTime CreationTime { get; set; }
+		public string Username { get; set; }
+		public string HashedPassword { get; set; }
+
+		public List<RbacRole> Roles { get; set; }
+
+		public User()
+		{
+		}
+
+		/// <summary>
+		/// Updates this user's password.
+		/// </summary>
+		/// <param name="newPassword">The new (unhashed) password.</param>
+		public void SetPassword(string newPassword)
+		{
+			HashedPassword = passwordHasher.Compute(newPassword);
+		}
+		/// <summary>
+		/// Checks whether a specified (unhashed) password matches 
+		/// </summary>
+		/// <param name="providedPassword">The password to check.</param>
+		/// <returns>Whether the specified password matches the stored password or not.</returns>
+		public bool CheckPassword(string providedPassword)
+		{
+			return passwordHasher.Verify(providedPassword, HashedPassword);
+		}
+
+		/// <summary>
+		/// Recursively works out whether this user has the specified permission.
+		/// </summary>
+		/// <param name="permission">The permission to search for.</param>
+		/// <returns>Whether this user has the specified permission through one of their roles or not.</returns>
+		public bool HasPermission(RbacPermission permission)
+		{
+			return Roles.Any((RbacRole role) => role.HasPermission(permission));
+		}
+	}
+}

Nibriboard/Userspace/UserManager.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+
+namespace Nibriboard.Userspace
+{
+	public class UserManager
+	{
+		public List<User> Users { get; private set; } = new List<User>();
+		public List<RbacPermission> Permissions { get; private set; } = new List<RbacPermission>();
+		public List<RbacRole> Roles { get; private set; } = new List<RbacRole>();
+
+		public UserManager()
+		{
+			Permissions.AddRange(new RbacPermission[] {
+				new RbacPermission("view-public-plane", "View public planes"),
+				new RbacPermission("view-own-plane", "View your own planes."),
+				new RbacPermission("view-any-plane", "View anyone's planes."),
+				new RbacPermission("create-plane", "Create a new plane."),
+				new RbacPermission("delete-own-plane", "Delete a plane."),
+				new RbacPermission("delete-any-plane", "Delete a plane."),
+				new RbacPermission("manage-own-plane-members", "Manage the users allowed to access one of your planes."),
+				new RbacPermission("manage-any-plane-members", "Manage the users allowed to access one any plane.")
+			});
+			Roles.Add(new RbacRole("Guest", new List<RbacPermission>() {
+				GetPermission("view-public-plane")
+			}));
+			Roles.Add(new RbacRole("Member", new List<RbacPermission>() {
+				GetPermission("view-own-plane"),
+				GetPermission("create-plane"),
+				GetPermission("delete-own-plane"),
+				GetPermission("manage-own-plane-members")
+			}, new List<RbacRole>() {
+				GetRole("Guest")
+			}));
+			Roles.Add(new RbacRole("Root", new List<RbacPermission>() {
+				GetPermission("view-any-plane"),
+				GetPermission("delete-any-plane"),
+				GetPermission("manage-any-plane-members")
+			}, new List<RbacRole>() {
+				GetRole("Member")
+			}));
+		}
+
+		public RbacPermission GetPermission(string permissionName)
+		{
+			return Permissions.Find((RbacPermission permission) => permission.Name == permissionName);
+		}
+		public RbacRole GetRole(string roleName)
+		{
+			return Roles.Find((RbacRole role) => role.Name == roleName);
+		}
+	}
+}

Nibriboard/packages.config

@@ -5,5 +5,6 @@
   <package id="NCuid" version="1.0.0" targetFramework="net461" />
   <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net461" />
   <package id="SharpCompress" version="0.19.2" targetFramework="net461" />
+  <package id="SimpleHashing.Net" version="1.0.1" targetFramework="net462" />
   <package id="System.ValueTuple" version="4.4.0" targetFramework="net462" />
 </packages>