124 lines
4.0 KiB
C#
124 lines
4.0 KiB
C#
namespace ASC.Core.Security.Authentication;
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[Scope]
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public class CookieStorage
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{
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private const string DateTimeFormat = "yyyy-MM-dd HH:mm:ss,fff";
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private readonly InstanceCrypto _instanceCrypto;
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private readonly TenantCookieSettingsHelper _tenantCookieSettingsHelper;
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private readonly HttpContext _httpContext;
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private readonly ILog _logger;
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public CookieStorage(
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InstanceCrypto instanceCrypto,
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TenantCookieSettingsHelper tenantCookieSettingsHelper,
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IOptionsMonitor<ILog> options)
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{
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_instanceCrypto = instanceCrypto;
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_tenantCookieSettingsHelper = tenantCookieSettingsHelper;
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_logger = options.CurrentValue;
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}
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public CookieStorage(
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IHttpContextAccessor httpContextAccessor,
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InstanceCrypto instanceCrypto,
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TenantCookieSettingsHelper tenantCookieSettingsHelper,
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IOptionsMonitor<ILog> options)
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: this(instanceCrypto, tenantCookieSettingsHelper, options)
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{
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_httpContext = httpContextAccessor.HttpContext;
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}
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public bool DecryptCookie(string cookie, out int tenant, out Guid userid, out int indexTenant, out DateTime expire, out int indexUser)
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{
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tenant = Tenant.DefaultTenant;
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userid = Guid.Empty;
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indexTenant = 0;
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expire = DateTime.MaxValue;
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indexUser = 0;
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if (string.IsNullOrEmpty(cookie))
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{
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return false;
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}
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try
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{
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cookie = (HttpUtility.UrlDecode(cookie) ?? "").Replace(' ', '+');
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var s = _instanceCrypto.Decrypt(cookie).Split('$');
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if (1 < s.Length)
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{
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tenant = int.Parse(s[1]);
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}
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if (4 < s.Length)
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{
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userid = new Guid(s[4]);
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}
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if (5 < s.Length)
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{
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indexTenant = int.Parse(s[5]);
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}
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if (6 < s.Length)
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{
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expire = DateTime.ParseExact(s[6], DateTimeFormat, CultureInfo.InvariantCulture);
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}
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if (7 < s.Length)
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{
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indexUser = int.Parse(s[7]);
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}
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return true;
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}
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catch (Exception err)
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{
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_logger.ErrorFormat("Authenticate error: cookie {0}, tenant {1}, userid {2}, indexTenant {3}, expire {4}: {5}",
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cookie, tenant, userid, indexTenant, expire.ToString(DateTimeFormat), err);
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}
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return false;
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}
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public string EncryptCookie(int tenant, Guid userid)
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{
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var settingsTenant = _tenantCookieSettingsHelper.GetForTenant(tenant);
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var expires = _tenantCookieSettingsHelper.GetExpiresTime(tenant);
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var settingsUser = _tenantCookieSettingsHelper.GetForUser(tenant, userid);
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return EncryptCookie(tenant, userid, settingsTenant.Index, expires, settingsUser.Index);
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}
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public string EncryptCookie(int tenant, Guid userid, int indexTenant, DateTime expires, int indexUser)
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{
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var s = string.Format("{0}${1}${2}${3}${4}${5}${6}${7}",
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string.Empty, //login
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tenant,
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string.Empty, //password
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GetUserDepenencySalt(),
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userid.ToString("N"),
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indexTenant,
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expires.ToString(DateTimeFormat, CultureInfo.InvariantCulture),
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indexUser);
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return _instanceCrypto.Encrypt(s);
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}
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private string GetUserDepenencySalt()
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{
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var data = string.Empty;
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try
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{
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if (_httpContext?.Request != null)
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{
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var forwarded = _httpContext.Request.Headers["X-Forwarded-For"].ToString();
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data = string.IsNullOrEmpty(forwarded) ? _httpContext.Request.GetUserHostAddress() : forwarded.Split(':')[0];
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}
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}
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catch { }
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return Hasher.Base64Hash(data ?? string.Empty, HashAlg.SHA256);
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}
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}
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