ADHelper

using System;

using System.DirectoryServices;

namespace SystemFrameworks.Helper {

///

/// 活动目录辅助类。封装一系列活动目录操作相关的方法。

///

public sealed class ADHelper     {

///

/// 域名

///

private static string DomainName = "MyDomain";

///

/// LDAP 地址

///

private static string LDAPDomain = "DC=MyDomain,DC=local";

///

/// LDAP绑定路径

///

private static string ADPath = "LDAP://brooks.mydomain.local";

///

/// 登录帐号

///

private static string ADUser = "Administrator";

///

/// 登录密码

///

private static string ADPassword = "password";

///

/// 扮演类实例

///

private static IdentityImpersonation impersonate = new IdentityImpersonation(ADUser, ADPassword, DomainName);

///

/// 用户登录验证结果

///

public enum LoginResult         {

///

/// 正常登录

///

LOGIN_USER_OK = 0,

///

/// 用户不存在

///

LOGIN_USER_DOESNT_EXIST,

///

/// 用户帐号被禁用

///

LOGIN_USER_ACCOUNT_INACTIVE,

///

/// 用户密码不正确

///

LOGIN_USER_PASSWORD_INCORRECT

}

///

/// 用户属性定义标志

///

public enum ADS_USER_FLAG_ENUM         {

///

/// 登录脚本标志。如果通过 ADSI LDAP 进行读或写操作时，该标志失效。如果通过 ADSI WINNT，该标志为只读。

///

ADS_UF_SCRIPT = 0X0001,

///

/// 用户帐号禁用标志

///

ADS_UF_ACCOUNTDISABLE = 0X0002,

///

/// 主文件夹标志

///

ADS_UF_HOMEDIR_REQUIRED = 0X0008,

///

/// 过期标志

///

ADS_UF_LOCKOUT = 0X0010,

///

/// 用户密码不是必须的

///

ADS_UF_PASSWD_NOTREQD = 0X0020,

///

/// 密码不能更改标志

///

ADS_UF_PASSWD_CANT_CHANGE = 0X0040,

///

/// 使用可逆的加密保存密码

///

ADS_UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED = 0X0080,

///

/// 本地帐号标志

///

ADS_UF_TEMP_DUPLICATE_ACCOUNT = 0X0100,

///

/// 普通用户的默认帐号类型

///

ADS_UF_NORMAL_ACCOUNT = 0X0200,

///

/// 跨域的信任帐号标志

///

ADS_UF_INTERDOMAIN_TRUST_ACCOUNT = 0X0800,

///

/// 工作站信任帐号标志

///

ADS_UF_WORKSTATION_TRUST_ACCOUNT = 0x1000,

///

/// 服务器信任帐号标志

///

ADS_UF_SERVER_TRUST_ACCOUNT = 0X2000,

///

/// 密码永不过期标志

///

ADS_UF_DONT_EXPIRE_PASSWD = 0X10000,

///

/// MNS 帐号标志

///

ADS_UF_MNS_LOGON_ACCOUNT = 0X20000,

///

/// 交互式登录必须使用智能卡

///

ADS_UF_SMARTCARD_REQUIRED = 0X40000,

///

/// 当设置该标志时，服务帐号（用户或计算机帐号）将通过 Kerberos 委托信任

///

ADS_UF_TRUSTED_FOR_DELEGATION = 0X80000,

///

/// 当设置该标志时，即使服务帐号是通过 Kerberos 委托信任的，敏感帐号不能被委托

///

ADS_UF_NOT_DELEGATED = 0X100000,

///

/// 此帐号需要 DES 加密类型

///

ADS_UF_USE_DES_KEY_ONLY = 0X200000,

///

/// 不要进行 Kerberos 预身份验证

///

ADS_UF_DONT_REQUIRE_PREAUTH = 0X4000000,

///

/// 用户密码过期标志

///

ADS_UF_PASSWORD_EXPIRED = 0X800000,

///

/// 用户帐号可委托标志

///

ADS_UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION = 0X1000000

}

public ADHelper()         {

//

}

#region GetDirectoryObject

///

/// 获得DirectoryEntry对象实例,以管理员登陆AD

///

///

private static DirectoryEntry GetDirectoryObject()         {

DirectoryEntry entry = new DirectoryEntry(ADPath, ADUser, ADPassword, AuthenticationTypes.Secure);

return entry;

}

///

/// 根据指定用户名和密码获得相应DirectoryEntry实体

///

///

///

///

private static DirectoryEntry GetDirectoryObject(string userName, string password)         {

DirectoryEntry entry = new DirectoryEntry(ADPath, userName, password, AuthenticationTypes.None);

return entry;

}

///

/// i.e. /CN=Users,DC=creditsights, DC=cyberelves, DC=Com

///

///

///

private static DirectoryEntry GetDirectoryObject(string domainReference)         {

DirectoryEntry entry = new DirectoryEntry(ADPath + domainReference, ADUser, ADPassword, AuthenticationTypes.Secure);

return entry;

}

///

/// 获得以UserName,Password创建的DirectoryEntry

///

///

///

///

///

private static DirectoryEntry GetDirectoryObject(string domainReference, string userName, string password)         {

DirectoryEntry entry = new DirectoryEntry(ADPath + domainReference, userName, password, AuthenticationTypes.Secure);

return entry;

}

#endregion

#region GetDirectoryEntry

///

/// 根据用户公共名称取得用户的 对象

///

/// 用户公共名称

/// 如果找到该用户，则返回用户的 对象；否则返回 null

public static DirectoryEntry GetDirectoryEntry(string commonName)         {

DirectoryEntry de = GetDirectoryObject();

DirectorySearcher deSearch = new DirectorySearcher(de);

deSearch.Filter = "(&(&(objectCategory=person)(objectClass=user))(cn=" + commonName + "))";

deSearch.SearchScope = SearchScope.Subtree;

try             {

SearchResult result = deSearch.FindOne();

de = new DirectoryEntry(result.Path);

return de;

}

catch             {

return null;

}

}

///

/// 根据用户公共名称和密码取得用户的 对象。

///

/// 用户公共名称

/// 用户密码

/// 如果找到该用户，则返回用户的 对象；否则返回 null

public static DirectoryEntry GetDirectoryEntry(string commonName, string password)         {

DirectoryEntry de = GetDirectoryObject(commonName, password);

DirectorySearcher deSearch = new DirectorySearcher(de);

deSearch.Filter = "(&(&(objectCategory=person)(objectClass=user))(cn=" + commonName + "))";

deSearch.SearchScope = SearchScope.Subtree;

try             {

SearchResult result = deSearch.FindOne();

de = new DirectoryEntry(result.Path);

return de;

}

catch             {

return null;

}

}

///

/// 根据用户帐号称取得用户的 对象

///

/// 用户帐号名

/// 如果找到该用户，则返回用户的 对象；否则返回 null

public static DirectoryEntry GetDirectoryEntryByAccount(string sAMAccountName)         {

DirectoryEntry de = GetDirectoryObject();

DirectorySearcher deSearch = new DirectorySearcher(de);

deSearch.Filter = "(&(&(objectCategory=person)(objectClass=user))(sAMAccountName=" + sAMAccountName + "))";

deSearch.SearchScope = SearchScope.Subtree;

try             {

SearchResult result = deSearch.FindOne();

de = new DirectoryEntry(result.Path);

return de;

}

catch             {

return null;

}

}

///

/// 根据用户帐号和密码取得用户的 对象

///

/// 用户帐号名

/// 用户密码

/// 如果找到该用户，则返回用户的 对象；否则返回 null

public static DirectoryEntry GetDirectoryEntryByAccount(string sAMAccountName, string password)         {

DirectoryEntry de = GetDirectoryEntryByAccount(sAMAccountName);

if (de != null)             {

string commonName = de.Properties["cn"][0].ToString();

if (GetDirectoryEntry(commonName, password) != null)

return GetDirectoryEntry(commonName, password);

else

return null;

}

else             {

return null;

}

}

///

/// 根据组名取得用户组的 对象

///

/// 组名

///

public static DirectoryEntry GetDirectoryEntryOfGroup(string groupName)         {

DirectoryEntry de = GetDirectoryObject();

DirectorySearcher deSearch = new DirectorySearcher(de);

deSearch.Filter = "(&(objectClass=group)(cn=" + groupName + "))";

deSearch.SearchScope = SearchScope.Subtree;

try             {

SearchResult result = deSearch.FindOne();

de = new DirectoryEntry(result.Path);

return de;

}

catch             {

return null;

}

}

#endregion

#region GetProperty

///

/// 获得指定 指定属性名对应的值

///

///

/// 属性名称

/// 属性值

public static string GetProperty(DirectoryEntry de, string propertyName)         {

if (de.Properties.Contains(propertyName))             {

return de.Properties[propertyName][0].ToString();

}

else             {

return string.Empty;

}

}

///

/// 获得指定搜索结果 中指定属性名对应的值

///

///

/// 属性名称

/// 属性值

public static string GetProperty(SearchResult searchResult, string propertyName)         {

if (searchResult.Properties.Contains(propertyName))             {

return searchResult.Properties[propertyName][0].ToString();

}

else             {

return string.Empty;

}

}

#endregion

///

/// 设置指定 的属性值

///

///

/// 属性名称

/// 属性值

public static void SetProperty(DirectoryEntry de, string propertyName, string propertyValue)         {

if (propertyValue != string.Empty || propertyValue != "" || propertyValue != null)             {

if (de.Properties.Contains(propertyName))                 {

de.Properties[propertyName][0] = propertyValue;

}

else                 {

de.Properties[propertyName].Add(propertyValue);

}

}

}

///

/// 创建新的用户

///

/// DN 位置。例如：OU=共享平台 或 CN=Users

/// 公共名称

/// 帐号

/// 密码

///

public static DirectoryEntry CreateNewUser(string ldapDN, string commonName, string sAMAccountName, string password)         {

DirectoryEntry entry = GetDirectoryObject();

DirectoryEntry subEntry = entry.Children.Find(ldapDN);

DirectoryEntry deUser = subEntry.Children.Add("CN=" + commonName, "user");

deUser.Properties["sAMAccountName"].Value = sAMAccountName;

deUser.CommitChanges();

ADHelper.EnableUser(commonName);

ADHelper.SetPassword(commonName, password);

deUser.Close();

return deUser;

}

///

/// 创建新的用户。默认创建在 Users 单元下。

///

/// 公共名称

/// 帐号

/// 密码

///

public static DirectoryEntry CreateNewUser(string commonName, string sAMAccountName, string password)         {

return CreateNewUser("CN=Users", commonName, sAMAccountName, password);

}

///

/// 判断指定公共名称的用户是否存在

///

/// 用户公共名称

/// 如果存在，返回 true；否则返回 false

public static bool IsUserExists(string commonName)         {

DirectoryEntry de = GetDirectoryObject();

DirectorySearcher deSearch = new DirectorySearcher(de);

deSearch.Filter = "(&(&(objectCategory=person)(objectClass=user))(cn=" + commonName + "))";       // LDAP 查询串

SearchResultCollection results = deSearch.FindAll();

if (results.Count == 0)

return false;

else

return true;

}

///

/// 判断用户帐号是否激活

///

/// 用户帐号属性控制器

/// 如果用户帐号已经激活，返回 true；否则返回 false

public static bool IsAccountActive(int userAccountControl)         {

int userAccountControl_Disabled = Convert.ToInt32(ADS_USER_FLAG_ENUM.ADS_UF_ACCOUNTDISABLE);

int flagExists = userAccountControl & userAccountControl_Disabled;

if (flagExists > 0)

return false;

else

return true;

}

///

/// 判断用户与密码是否足够以满足身份验证进而登录

///

/// 用户公共名称

/// 密码

/// 如能可正常登录，则返回 true；否则返回 false

public static LoginResult Login(string commonName, string password)         {

DirectoryEntry de = GetDirectoryEntry(commonName);

if (de != null)             {

// 必须在判断用户密码正确前，对帐号激活属性进行判断；否则将出现异常。

int userAccountControl = Convert.ToInt32(de.Properties["userAccountControl"][0]);

de.Close();

if (!IsAccountActive(userAccountControl))

return LoginResult.LOGIN_USER_ACCOUNT_INACTIVE;

if (GetDirectoryEntry(commonName, password) != null)

return LoginResult.LOGIN_USER_OK;

else

return LoginResult.LOGIN_USER_PASSWORD_INCORRECT;

}

else             {

return LoginResult.LOGIN_USER_DOESNT_EXIST;

}

}

///

/// 判断用户帐号与密码是否足够以满足身份验证进而登录

///

/// 用户帐号

/// 密码

/// 如能可正常登录，则返回 true；否则返回 false

public static LoginResult LoginByAccount(string sAMAccountName, string password)         {

DirectoryEntry de = GetDirectoryEntryByAccount(sAMAccountName);

if (de != null)             {

// 必须在判断用户密码正确前，对帐号激活属性进行判断；否则将出现异常。

int userAccountControl = Convert.ToInt32(de.Properties["userAccountControl"][0]);

de.Close();

if (!IsAccountActive(userAccountControl))

return LoginResult.LOGIN_USER_ACCOUNT_INACTIVE;

if (GetDirectoryEntryByAccount(sAMAccountName, password) != null)

return LoginResult.LOGIN_USER_OK;

else

return LoginResult.LOGIN_USER_PASSWORD_INCORRECT;

}

else             {

return LoginResult.LOGIN_USER_DOESNT_EXIST;

}

}

///

/// 设置用户密码，管理员可以通过它来修改指定用户的密码。

///

/// 用户公共名称

/// 用户新密码

public static void SetPassword(string commonName, string newPassword)         {

DirectoryEntry de = GetDirectoryEntry(commonName);

// 模拟超级管理员，以达到有权限修改用户密码

impersonate.BeginImpersonate();

de.Invoke("SetPassword", new object[] { newPassword });

impersonate.StopImpersonate();

de.Close();

}

///

/// 设置帐号密码，管理员可以通过它来修改指定帐号的密码。

///

/// 用户帐号

/// 用户新密码

public static void SetPasswordByAccount(string sAMAccountName, string newPassword)         {

DirectoryEntry de = GetDirectoryEntryByAccount(sAMAccountName);

// 模拟超级管理员，以达到有权限修改用户密码

IdentityImpersonation impersonate = new IdentityImpersonation(ADUser, ADPassword, DomainName);

impersonate.BeginImpersonate();

de.Invoke("SetPassword", new object[] { newPassword });

impersonate.StopImpersonate();

de.Close();

}

///

/// 修改用户密码

///

/// 用户公共名称

/// 旧密码

/// 新密码

public static void ChangeUserPassword(string commonName, string oldPassword, string newPassword)         {

// to-do: 需要解决密码策略问题

DirectoryEntry oUser = GetDirectoryEntry(commonName);

oUser.Invoke("ChangePassword", new Object[] { oldPassword, newPassword });

oUser.Close();

}

///

/// 启用指定公共名称的用户

///

/// 用户公共名称

public static void EnableUser(string commonName)         {

EnableUser(GetDirectoryEntry(commonName));

}

///

/// 启用指定 的用户

///

///

public static void EnableUser(DirectoryEntry de)         {

impersonate.BeginImpersonate();

de.Properties["userAccountControl"][0] = ADHelper.ADS_USER_FLAG_ENUM.ADS_UF_NORMAL_ACCOUNT | ADHelper.ADS_USER_FLAG_ENUM.ADS_UF_DONT_EXPIRE_PASSWD;

de.CommitChanges();

impersonate.StopImpersonate();

de.Close();

}

///

/// 禁用指定公共名称的用户

///

/// 用户公共名称

public static void DisableUser(string commonName)         {

DisableUser(GetDirectoryEntry(commonName));

}

///

/// 禁用指定 的用户

///

///

public static void DisableUser(DirectoryEntry de)         {

impersonate.BeginImpersonate();

de.Properties["userAccountControl"][0] = ADHelper.ADS_USER_FLAG_ENUM.ADS_UF_NORMAL_ACCOUNT | ADHelper.ADS_USER_FLAG_ENUM.ADS_UF_DONT_EXPIRE_PASSWD | ADHelper.ADS_USER_FLAG_ENUM.ADS_UF_ACCOUNTDISABLE;

de.CommitChanges();

impersonate.StopImpersonate();

de.Close();

}

///

/// 将指定的用户添加到指定的组中。默认为 Users 下的组和用户。

///

/// 用户公共名称

/// 组名

public static void AddUserToGroup(string userCommonName, string groupName)         {

DirectoryEntry oGroup = GetDirectoryEntryOfGroup(groupName);

DirectoryEntry oUser = GetDirectoryEntry(userCommonName);

impersonate.BeginImpersonate();

oGroup.Properties["member"].Add(oUser.Properties["distinguishedName"].Value);

oGroup.CommitChanges();

impersonate.StopImpersonate();

oGroup.Close();

oUser.Close();

}

///

/// 将用户从指定组中移除。默认为 Users 下的组和用户。

///

/// 用户公共名称

/// 组名

public static void RemoveUserFromGroup(string userCommonName, string groupName)         {

DirectoryEntry oGroup = GetDirectoryEntryOfGroup(groupName);

DirectoryEntry oUser = GetDirectoryEntry(userCommonName);

impersonate.BeginImpersonate();

oGroup.Properties["member"].Remove(oUser.Properties["distinguishedName"].Value);

oGroup.CommitChanges();

impersonate.StopImpersonate();

oGroup.Close();

oUser.Close();

}

}

///

/// 用户模拟角色类。实现在程序段内进行用户角色模拟。

///

public class IdentityImpersonation     {

[DllImport("advapi32.dll", SetLastError = true)]

public static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken);

[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]

public extern static bool DuplicateToken(IntPtr ExistingTokenHandle, int SECURITY_IMPERSONATION_LEVEL, ref IntPtr DuplicateTokenHandle);

[DllImport("kernel32.dll", CharSet = CharSet.Auto)]

public extern static bool CloseHandle(IntPtr handle);

// 要模拟的用户的用户名、密码、域(机器名)

private String _sImperUsername;

private String _sImperPassword;

private String _sImperDomain;

// 记录模拟上下文

private WindowsImpersonationContext _imperContext;

private IntPtr _adminToken;

private IntPtr _dupeToken;

// 是否已停止模拟

private Boolean _bClosed;

///

/// 构造函数

///

/// 所要模拟的用户的用户名

/// 所要模拟的用户的密码

/// 所要模拟的用户所在的域

public IdentityImpersonation(String impersonationUsername, String impersonationPassword, String impersonationDomain)         {

_sImperUsername = impersonationUsername;

_sImperPassword = impersonationPassword;

_sImperDomain = impersonationDomain;

_adminToken = IntPtr.Zero;

_dupeToken = IntPtr.Zero;

_bClosed = true;

}

///

/// 析构函数

///

~IdentityImpersonation()         {

if (!_bClosed)             {

StopImpersonate();

}

}

///

/// 开始身份角色模拟。

///

///

public Boolean BeginImpersonate()         {

Boolean bLogined = LogonUser(_sImperUsername, _sImperDomain, _sImperPassword, 2, 0, ref _adminToken);

if (!bLogined)             {

return false;

}

Boolean bDuped = DuplicateToken(_adminToken, 2, ref _dupeToken);

if (!bDuped)             {

return false;

}

WindowsIdentity fakeId = new WindowsIdentity(_dupeToken);

_imperContext = fakeId.Impersonate();

_bClosed = false;

return true;

}

///

/// 停止身分角色模拟。

///

public void StopImpersonate()         {

_imperContext.Undo();

CloseHandle(_dupeToken);

CloseHandle(_adminToken);

_bClosed = true;

}

} }