oqtane.framework/Oqtane.Server/Security/AuthorizationPolicyProvider.cs

61 lines
2.2 KiB
C#

using Microsoft.AspNetCore.Authorization;
using Microsoft.Extensions.Options;
using Oqtane.Shared;
using System.Threading.Tasks;
namespace Oqtane.Security
{
public class AuthorizationPolicyProvider : DefaultAuthorizationPolicyProvider
{
private readonly AuthorizationOptions _options;
public AuthorizationPolicyProvider(IOptions<AuthorizationOptions> options) : base(options)
{
_options = options.Value;
}
public override async Task<AuthorizationPolicy> GetPolicyAsync(string policyName)
{
// get policy
policyName = GetPolicyName(policyName);
var policy = await base.GetPolicyAsync(policyName);
if (policy == null)
{
// policy names must be in the form of "EntityName:PermissionName:Roles"
if (policyName.Contains(':'))
{
var segments = policyName.Split(':');
if (segments.Length == 3)
{
// create policy
var builder = new AuthorizationPolicyBuilder();
builder.AddRequirements(new PermissionRequirement(segments[0], segments[1], segments[2]));
policy = builder.Build();
// add policy to the AuthorizationOptions
try
{
_options.AddPolicy(policyName, policy);
}
catch
{
// race condition - policy already added by another thread
}
}
}
}
return policy;
}
private string GetPolicyName(string policyName)
{
// backward compatibility for legacy static policy names
if (policyName == PolicyNames.ViewModule) policyName = $"{EntityNames.Module}:{PermissionNames.View}:{RoleNames.Admin}";
if (policyName == PolicyNames.EditModule) policyName = $"{EntityNames.Module}:{PermissionNames.Edit}:{RoleNames.Admin}";
return policyName;
}
}
}