mirror of
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340 lines
15 KiB
C#
340 lines
15 KiB
C#
/* Copyright (c) Citrix Systems Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using XenAdmin.Core;
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using XenAdmin.Network;
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namespace XenAPI
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{
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// Note that the Role object represents both the high-level roles (such as "VM Operator" etc.)
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// and their subroles, i.e., the individual calls they are allowed to make (such as "vm.create").
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public partial class Role : IComparable<Role>
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{
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private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
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public const string MR_ROLE_READ_ONLY = "read-only";
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public const string MR_ROLE_VM_OPERATOR = "vm-operator";
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public const string MR_ROLE_VM_ADMIN = "vm-admin";
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public const string MR_ROLE_VM_POWER_ADMIN = "vm-power-admin";
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public const string MR_ROLE_POOL_OPERATOR = "pool-operator";
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public const string MR_ROLE_POOL_ADMIN = "pool-admin";
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public string FriendlyName
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{
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get
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{
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return XenAdmin.Core.PropertyManager.GetFriendlyName(String.Format("Role.{0}.NameLabel", this.name_label.ToLowerInvariant()));
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}
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}
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public string FriendlyDescription
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{
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get
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{
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return XenAdmin.Core.PropertyManager.GetFriendlyName(String.Format("Role.{0}.Description", this.name_label.ToLowerInvariant()));
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}
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}
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public override string Name
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{
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get
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{
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return name_label;
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}
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}
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/// <summary>
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/// Currently all RBAC roles can be arranged in a rank so that each one has all the privileges of the next. Use this function for sorting based on this ordering.
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/// </summary>
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/// <returns></returns>
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public int RoleRank()
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{
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switch (name_label.ToLowerInvariant())
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{
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case MR_ROLE_READ_ONLY: return 0;
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case MR_ROLE_VM_OPERATOR: return 1;
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case MR_ROLE_VM_ADMIN: return 2;
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case MR_ROLE_VM_POWER_ADMIN: return 3;
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case MR_ROLE_POOL_OPERATOR: return 4;
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case MR_ROLE_POOL_ADMIN: return 5;
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}
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return -1;
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}
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/// <summary>
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/// logout, login_with_password
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/// </summary>
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public readonly static RbacMethodList CommonSessionApiList = new RbacMethodList(
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"session.logout",
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"session.login_with_password"
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);
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/// <summary>
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/// add_to_other_config, destroy
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/// </summary>
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public readonly static RbacMethodList CommonTaskApiList = new RbacMethodList(
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new RbacMethod("task.add_to_other_config", "XenCenterUUID"), // See AsyncAction.RelatedTask
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new RbacMethod("task.add_to_other_config", "applies_to"),
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new RbacMethod("task.destroy")
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);
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/// <summary>
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/// Takes a list of role objects and returns as a comma separated friendly string
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/// </summary>
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/// <param name="roles"></param>
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/// <returns></returns>
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public static string FriendlyCSVRoleList(List<Role> roles)
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{
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if (roles == null)
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return "";
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Converter<Role, String> roleConverter = new Converter<Role, string>(
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delegate(Role r)
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{
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return r.FriendlyName;
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});
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return String.Join(", ", roles.ConvertAll<String>(roleConverter).ToArray());
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}
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/// <summary>
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/// Retrieves all the server RBAC roles which are able to complete all the api methods supplied. If on George or less this will return an empty list.
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/// </summary>
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/// <param name="ApiMethodsToRoleCheck">list of RbacMethods to check</param>
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/// <param name="Connection">server connection to retrieve roles from</param>
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/// <returns></returns>
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public static List<Role> ValidRoleList(RbacMethodList ApiMethodsToRoleCheck, IXenConnection Connection)
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{
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return ValidRoleList(ApiMethodsToRoleCheck, Connection, true);
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}
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/// <summary>
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/// Retrieves all the server RBAC roles which are able to complete all the api methods supplied. If on George or less this will return an empty list.
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/// </summary>
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/// <param name="ApiMethodsToRoleCheck">list of RbacMethods to check</param>
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/// <param name="Connection">server connection to retrieve roles from</param>
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/// <returns></returns>
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public static List<Role> ValidRoleList(RbacMethodList ApiMethodsToRoleCheck, IXenConnection Connection, bool debug)
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{
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List<Role> rolesAbleToCompleteAction = new List<Role>();
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if (debug)
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log.DebugFormat("Checking roles required to complete the following calls: {0}", String.Join(", ", ApiMethodsToRoleCheck.ToStringArray()));
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foreach (RbacMethod method in ApiMethodsToRoleCheck)
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{
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// For every call in the list, compile a list of the roles that can perform it, taking the intersection of the
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// roles able to perform the call in question and those in the list already.
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List<Role> rolesAbleToCompleteApiCall = ValidRoleList(method, Connection);
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if (rolesAbleToCompleteAction.Count == 0)
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{
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rolesAbleToCompleteAction.AddRange(rolesAbleToCompleteApiCall);
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continue;
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}
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if (rolesAbleToCompleteApiCall.Count != 0) // zero is a bug: see Assert below
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{
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// take intersection of existing authorized roles and this set of authorized roles
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rolesAbleToCompleteAction.RemoveAll(delegate(Role r)
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{
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return !rolesAbleToCompleteApiCall.Contains(r);
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});
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}
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}
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return rolesAbleToCompleteAction;
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}
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/// <summary>
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/// Retrieves all the server RBAC roles which are able to complete the api method supplied. If on George or less this will return an empty list.
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/// </summary>
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/// <param name="ApiMethodToRoleCheck">RbacMethod to check</param>
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/// <param name="Connection">server connection to retrieve roles from</param>
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/// <returns></returns>
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public static List<Role> ValidRoleList(RbacMethod ApiMethodToRoleCheck, IXenConnection Connection)
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{
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List<Role> rolesAbleToCompleteApiCall = new List<Role>();
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foreach (Role role in Connection.Cache.Roles)
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{
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List<Role> subroles = (List<Role>)Connection.ResolveAll<Role>(role.subroles);
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if (subroles.Find(
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delegate(Role r)
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{
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return r.CanPerform(ApiMethodToRoleCheck);
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})
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!= null)
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{
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rolesAbleToCompleteApiCall.Add(role);
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}
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}
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// don't do this assert with simulator connections. These will always have no roles.
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if (!Connection.HostnameWithPort.EndsWith(".xml", StringComparison.InvariantCultureIgnoreCase))
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{
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// No roles able to perform API call is a bug, because Pool Admins should be able to do everything.
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// Usually caused by a typo, or by running a new action against an old server without checking.
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System.Diagnostics.Trace.Assert(rolesAbleToCompleteApiCall.Count > 0, String.Format("No roles able to perform API call {0}", ApiMethodToRoleCheck));
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}
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return rolesAbleToCompleteApiCall;
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}
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/// <summary>
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/// Retrieves all the server RBAC roles which are able to complete the api method supplied. If on George or less this will return an empty list.
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/// </summary>
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/// <param name="ApiMethodToRoleCheck">object.method</param>
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/// <param name="Connection">server connection to retrieve roles from</param>
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/// <returns></returns>
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public static List<Role> ValidRoleList(string ApiMethodToRoleCheck, IXenConnection Connection)
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{
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return ValidRoleList(new RbacMethod(ApiMethodToRoleCheck), Connection);
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}
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/// <summary>
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/// Can the main session on this connection already perform all the API methods? If on George or less this will return false.
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/// Also return the list of valid roles.
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/// </summary>
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/// <param name="apiMethodsToRoleCheck">The methods to check</param>
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/// <param name="connection">The connection on which to perform the methods</param>
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/// <param name="validRoleList">The list of roles which can perform all the methods</param>
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public static bool CanPerform(RbacMethodList apiMethodsToRoleCheck, IXenConnection connection, out List<Role> validRoleList, bool debug)
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{
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validRoleList = ValidRoleList(apiMethodsToRoleCheck, connection, debug);
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if (Helpers.MidnightRideOrGreater(connection))
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{
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if (!connection.IsConnected)
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return false;
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if (connection.Session.IsLocalSuperuser)
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return true;
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foreach (Role role in validRoleList)
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{
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if (connection.Session.Roles.Contains(role))
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return true;
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}
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}
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return false;
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}
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/// <summary>
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/// Can the main session on this connection already perform all the API methods? If on George or less this will return false.
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/// Also return the list of valid roles.
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/// </summary>
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/// <param name="apiMethodsToRoleCheck">The methods to check</param>
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/// <param name="connection">The connection on which to perform the methods</param>
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/// <param name="validRoleList">The list of roles which can perform all the methods</param>
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public static bool CanPerform(RbacMethodList apiMethodsToRoleCheck, IXenConnection connection, out List<Role> validRoleList)
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{
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return CanPerform(apiMethodsToRoleCheck, connection, out validRoleList, true);
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}
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/// <summary>
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/// Can the main session on this connection already perform all the API methods? If on George or less this will return false.
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/// </summary>
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/// <param name="apiMethodsToRoleCheck">The methods to check</param>
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/// <param name="connection">The connection on which to perform the methods</param>
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public static bool CanPerform(RbacMethodList apiMethodsToRoleCheck, IXenConnection connection)
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{
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List<Role> validRoleList;
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return CanPerform(apiMethodsToRoleCheck, connection, out validRoleList);
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}
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/// <summary>
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/// Can the main session on this connection already perform all the API methods? If on George or less this will return false.
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/// </summary>
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/// <param name="apiMethodsToRoleCheck">The methods to check</param>
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/// <param name="connection">The connection on which to perform the methods</param>
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public static bool CanPerform(RbacMethodList apiMethodsToRoleCheck, IXenConnection connection, bool debug)
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{
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List<Role> validRoleList;
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return CanPerform(apiMethodsToRoleCheck, connection, out validRoleList, debug);
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}
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/// <summary>
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/// Can this subrole perform this API call?
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/// </summary>
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/// <param name="rbacMethod">The API call which we want to perform</param>
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/// <returns></returns>
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private bool CanPerform(RbacMethod rbacMethod)
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{
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// Does the method name match?
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if (name_label == rbacMethod.Method)
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return true;
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// Is the call a hash table modification, and if so, does the
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// more specific name match?
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if (!String.IsNullOrEmpty(rbacMethod.Key))
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{
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string whole = rbacMethod.ToString();
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if (name_label.EndsWith("*")) // e.g. vm.add_to_other_config/key:Foo*
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{
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string stripped_name = name_label.TrimEnd('*');
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if (whole.StartsWith(stripped_name))
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return true;
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}
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else // e.g. vm.add_to_other_config/key:Foo
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{
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if (name_label == whole)
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return true;
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}
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}
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return false;
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}
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#region XenObjectComparable<Role> Members
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public override int CompareTo(Role other)
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{
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int rank = RoleRank();
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int otherRank = other.RoleRank();
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return rank > otherRank ? 1 : rank < otherRank ? -1 : 0;
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}
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public override bool Equals(object obj)
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{
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Role r = obj as Role;
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if (r != null)
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{
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return r.opaque_ref == this.opaque_ref;
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}
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return base.Equals(obj);
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}
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public override int GetHashCode()
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{
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return opaque_ref.GetHashCode();
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}
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#endregion
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}
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}
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