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using APIJSON.NET.Models;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Options;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Claims;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
namespace APIJSON.NET.Services
{
public class IdentityService : IIdentityService
{
private IHttpContextAccessor _context;
private List<Role> roles;
public IdentityService(IHttpContextAccessor context, IOptions<List<Role>> _roles)
{
_context = context ?? throw new ArgumentNullException(nameof(context));
roles = _roles.Value;
}
public string GetUserIdentity()
{
return _context.HttpContext.User.FindFirstValue(ClaimTypes.NameIdentifier);
}
public string GetUserRoleName()
{
return _context.HttpContext.User.FindFirstValue(ClaimTypes.Role);
}
public Role GetRole()
{
var role = new Role();
if (string.IsNullOrEmpty(GetUserRoleName()))//没登录默认取第一个
{
role = roles.FirstOrDefault();
}
else
{
role = roles.FirstOrDefault(it => it.Name.Equals(GetUserRoleName(), StringComparison.CurrentCultureIgnoreCase));
}
return role;
}
public (bool, string) GetSelectRole(string table)
{
var role = GetRole();
if (role == null || role.Select == null || role.Select.Table == null)
{
return (false, $"appsettings.json权限配置不正确！");
}
string tablerole = role.Select.Table.FirstOrDefault(it => it == "*" || it.Equals(table, StringComparison.CurrentCultureIgnoreCase));
if (string.IsNullOrEmpty(tablerole))
{
return (false, $"表名{table}没权限查询！");
}
int index = Array.IndexOf(role.Select.Table, tablerole);
string selectrole = role.Select.Column[index];
return (true, selectrole);
}
public bool ColIsRole(string col, string[] selectrole)
{
if (selectrole.Contains("*"))
{
return true;
}
else
{
if (col.Contains("(") && col.Contains(")"))
{
Regex reg = new Regex(@"\(([^)]*)\)");
Match m = reg.Match(col);
if (selectrole.Contains(m.Result("$1"), StringComparer.CurrentCultureIgnoreCase))
{
return true;
}
else
{
return false;
}
}
else
{
if (selectrole.Contains(col, StringComparer.CurrentCultureIgnoreCase))
{
return true;
}
else
{
return false;
}
}
}
}
}
}