如何对活动目录验证用户名和密码?我只是想检查用户名和密码是否正确。
当前回答
不幸的是,没有“简单”的方法来检查AD上的用户凭据。
使用到目前为止所介绍的每一种方法,你可能会得到一个假阴性:用户的信用将是有效的,但AD在某些情况下将返回false:
用户需要在下次登录时更改密码。 用户密码已过期。
ActiveDirectory不允许您使用LDAP来确定密码是否由于用户必须更改密码或密码是否过期而无效。
要确定密码更改或密码过期,您可以调用Win32:LogonUser(),并检查以下2个常量的windows错误码:
Error_password_must_change = 1907 Error_password_expired = 1330
其他回答
使用DirectoryServices非常简单的解决方案:
using System.DirectoryServices;
//srvr = ldap server, e.g. LDAP://domain.com
//usr = user name
//pwd = user password
public bool IsAuthenticated(string srvr, string usr, string pwd)
{
bool authenticated = false;
try
{
DirectoryEntry entry = new DirectoryEntry(srvr, usr, pwd);
object nativeObject = entry.NativeObject;
authenticated = true;
}
catch (DirectoryServicesCOMException cex)
{
//not authenticated; reason why is in cex
}
catch (Exception ex)
{
//not authenticated due to some other exception [this is optional]
}
return authenticated;
}
需要NativeObject访问来检测坏的用户/密码
我们在内部网做这些
你必须使用System.DirectoryServices;
下面是代码的核心部分
using (DirectoryEntry adsEntry = new DirectoryEntry(path, strAccountId, strPassword))
{
using (DirectorySearcher adsSearcher = new DirectorySearcher(adsEntry))
{
//adsSearcher.Filter = "(&(objectClass=user)(objectCategory=person))";
adsSearcher.Filter = "(sAMAccountName=" + strAccountId + ")";
try
{
SearchResult adsSearchResult = adsSearcher.FindOne();
bSucceeded = true;
strAuthenticatedBy = "Active Directory";
strError = "User has been authenticated by Active Directory.";
}
catch (Exception ex)
{
// Failed to authenticate. Most likely it is caused by unknown user
// id or bad strPassword.
strError = ex.Message;
}
finally
{
adsEntry.Close();
}
}
}
我使用这个过程作为DLL登录到我们开发的其他应用程序… (我们目前正在使用OpenEdge Progress)
public static string AzureLogin(string user, string password) {
string status;
try {
new DirectorySearcher(new DirectoryEntry("LDAP://yourdomain.com", user, password) {
AuthenticationType = AuthenticationTypes.Secure,
Username = user,
Password = password
}) {
Filter = "(objectclass=user)"
}.FindOne().Properties["displayname"][0].ToString();
status = $"SUCCESS - User {user} has logged in.";
} catch(System.Exception e) {
status = $"ERROR - While logging in: {e}";
}
return status;
}
试试这段代码 (注意:报告不能在windows server 2000上工作)
#region NTLogonUser
#region Direct OS LogonUser Code
[DllImport( "advapi32.dll")]
private static extern bool LogonUser(String lpszUsername,
String lpszDomain, String lpszPassword, int dwLogonType,
int dwLogonProvider, out int phToken);
[DllImport("Kernel32.dll")]
private static extern int GetLastError();
public static bool LogOnXP(String sDomain, String sUser, String sPassword)
{
int token1, ret;
int attmpts = 0;
bool LoggedOn = false;
while (!LoggedOn && attmpts < 2)
{
LoggedOn= LogonUser(sUser, sDomain, sPassword, 3, 0, out token1);
if (LoggedOn) return (true);
else
{
switch (ret = GetLastError())
{
case (126): ;
if (attmpts++ > 2)
throw new LogonException(
"Specified module could not be found. error code: " +
ret.ToString());
break;
case (1314):
throw new LogonException(
"Specified module could not be found. error code: " +
ret.ToString());
case (1326):
// edited out based on comment
// throw new LogonException(
// "Unknown user name or bad password.");
return false;
default:
throw new LogonException(
"Unexpected Logon Failure. Contact Administrator");
}
}
}
return(false);
}
#endregion Direct Logon Code
#endregion NTLogonUser
除非你需要为“LogonException”创建自己的自定义异常
完整的. net解决方案是使用来自系统的类。DirectoryServices名称空间。它们允许直接查询AD服务器。下面是一个可以做到这一点的小样本:
using (DirectoryEntry entry = new DirectoryEntry())
{
entry.Username = "here goes the username you want to validate";
entry.Password = "here goes the password";
DirectorySearcher searcher = new DirectorySearcher(entry);
searcher.Filter = "(objectclass=user)";
try
{
searcher.FindOne();
}
catch (COMException ex)
{
if (ex.ErrorCode == -2147023570)
{
// Login or password is incorrect
}
}
}
// FindOne() didn't throw, the credentials are correct
这段代码使用提供的凭据直接连接到AD服务器。如果凭证无效,则search . findone()将抛出异常。ErrorCode是一个对应于“无效的用户名/密码”COM错误。
您不需要以AD用户的身份运行代码。事实上,我成功地使用它在AD服务器上查询信息,从域外的客户端!
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