SharePoint is a product from Microsoft that is being used in
many of the organization today to improve the business efficiency. The product
provides capability to business like Sites, Communities, Content, Composites,
Insights and Search.
Also it offer three different ways of accessing the
SharePoint data as follows
1.
SharePoint site web user interface
2.
Server Object Model
3.
Client Object Model
The security is well handled in SharePoint itself. If user
accesses the data using any of the way that mentioned above, first it applies
the security rule then SharePoint will decide whether the request can be
processed further or not. But there are some security rule applied against
Client Object Model since this concept can be used from a client computer where
the SharePoint is not installed or via web service. See all the web services
here.
Now we discuss about
Ensure
User: Checks whether the specified logon name belongs to
a valid user of the website, and if the logon name does not already exist, adds
it to the website.
Server and Client
object models directly exposes a method (Web.EnsureUser) to add or verify the
user in the Website. Also this is to let you all know that a user (AD DS/LDAP/Membership
Provider) can be added in the SharePoint userinfo list which is hidden using
SharePoint web service(Web service reference:
http://Site/_vti_bin/People.asmx).
People Web Service: Provides classes that can be used to
associate user identifiers (IDs) with security groups for SharePoint Foundation
Web site permissions. User IDs are validated against Active Directory Domain
Services (AD°DS) as well as various role or membership providers.
SPGroup
security information may also be stored in a collection of cross-site groups
for the site collection.
Class
People that
exposes member are
here
Method People.ResolvePrincipals is used for adding user in to SharePoint userinfo list. User
verification is performed against a directory or user list, such as Active
Directory Domain Services (AD DS), a Lightweight Directory Access Protocol
(LDAP) directory, some other role or membership providers, or another form of
user list.
Parameters
principalKeys
principalType
addToUserInfoList
Return Value
static string
WS_EnsureUser(string domain, string loginName)
{
string[] userLogin = new
string[] { domain + "\\"
+ loginName };
string userInfo = string.Empty;
try
{
WSPeople.People ppl = new WSPeople.People();
ppl.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
ppl.Url = "http://kmsnet:5050/_vti_bin/people.asmx";
//Get user info if already added in the site
WSPeople.PrincipalInfo[]
principalInfoUser = ppl.ResolvePrincipals(userLogin, WSPeople.SPPrincipalType.User, false);
if (principalInfoUser[0].UserInfoID ==
(-1))
{
//Add and Get user info if user is not added
in the site
principalInfoUser = ppl.ResolvePrincipals(userLogin, WSPeople.SPPrincipalType.User, true);
}
//get
SharePoint user id(unique) and user account name
userInfo = principalInfoUser[0].UserInfoID + ";#"
+ principalInfoUser[0].AccountName;
}
catch (Exception
ex)
{
Console.WriteLine("Error in Web Service : " + ex.Message);
}
return userInfo;
}
Complete Source Code:
using System;
//Server Object Model
using Microsoft.SharePoint;
//Client Object Model
using Microsoft.SharePoint.Client;
namespace KMSNET.EnsureUser
{
class Program
{
static void Main(string[] args)
{
string domain = "KMSNET";
string loginName = "Senthilrajan";
string userInfo = string.Empty;
//Call web service to Ensure user in SharePoint site
userInfo = WS_EnsureUser(domain, loginName);
Console.WriteLine("\nWeb
Service Returned :" + userInfo);
//Call Client Object Model to Ensure user in SharePoint
site
userInfo = COB_EnsureUser(domain, loginName);
Console.WriteLine("\nClient
Object Model Returned :" + userInfo);
//Call Server Object Model to Ensure user in SharePoint
site
userInfo = SOB_EnsureUser(domain, loginName);
Console.WriteLine("\nServer
Object Model Returned :" + userInfo);
Console.ReadKey(true); Console.WriteLine("Press any key to close....");
}
/// <summary>
/// Server Object Model :
Returns user ID and logon account. If user is not registered the add in to
userinfor list and return the user ID and logon account
/// </summary>
/// <param name="domain"></param>
/// <param name="loginName"></param>
/// <returns></returns>
static string
SOB_EnsureUser(string domain, string loginName)
{
string userLogin = (domain + "\\"
+ loginName);
string userInfo = string.Empty;
try
{
using (SPSite
siteColl = new SPSite("http://kmsnet:5050/"))
{
using (SPWeb
rootWeb = siteColl.RootWeb)
{
// Allow unsafe updates required, throws exception without, if not
administrator.
rootWeb.AllowUnsafeUpdates = true;
SPUser usr = rootWeb.EnsureUser(loginName);
userInfo = usr.ID + ";#" + usr.LoginName;
rootWeb.AllowUnsafeUpdates = false;
}
}
}
catch (Exception
ex)
{
Console.WriteLine("Error in Server Object Model : " + ex.Message);
}
return userInfo;
}
/// <summary>
/// Client Object Model :
Returns user ID and logon account. If user is not registered the add in to
userinfor list and return the user ID and logon account
/// </summary>
/// <param name="domain"></param>
/// <param name="loginName"></param>
/// <returns></returns>
static string
COB_EnsureUser(string domain, string loginName)
{
string userLogin = (domain + "\\"
+ loginName);
string userInfo = string.Empty;
try
{
using
(ClientContext context = new ClientContext("http://kmsnet:5050/"))
{
context.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
Web web = context.Web;
User usr = web.EnsureUser(userLogin);
context.Load(usr);
context.ExecuteQuery();
userInfo = usr.Id + ";#" +
usr.LoginName;
context.ExecuteQuery();
}
}
catch (Exception
ex)
{
Console.WriteLine("Error in Client Object Model : " + ex.Message);
}
return userInfo;
}
/// <summary>
/// Web Service : Returns
user ID and logon account. If user is not registered the add in to userinfor
list and return the user ID and logon account
/// </summary>
/// <param name="domain"></param>
/// <param name="loginName"></param>
/// <returns></returns>
static string
WS_EnsureUser(string domain, string loginName)
{
string[] userLogin = new
string[] { domain + "\\"
+ loginName };
string userInfo = string.Empty;
try
{
WSPeople.People ppl = new WSPeople.People();
ppl.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
ppl.Url = "http://kmsnet:5050/vti_bin/People.asmx";
//Get user info if already added in the site
WSPeople.PrincipalInfo[]
principalInfoUser = ppl.ResolvePrincipals(userLogin, WSPeople.SPPrincipalType.User, false);
if (principalInfoUser[0].UserInfoID ==
(-1))
{
//Add
and Get user info if user is not added in the site
principalInfoUser = ppl.ResolvePrincipals(userLogin, WSPeople.SPPrincipalType.User, true);
}
//get SharePoint user id(unique) and user
account name
userInfo = principalInfoUser[0].UserInfoID + ";#"
+ principalInfoUser[0].AccountName;
}
catch (Exception
ex)
{
Console.WriteLine("Error in Web Service : " + ex.Message);
}
return userInfo;
}
}
}
