/// <summary>
/// Retrieves current state of LDAP database and reflects it to the CMS.
/// </summary>
public void Synchronize()
{
try
{
var request = new SearchRequest(DefaultNamingContext, "(&(|(objectClass=user)(objectClass=group))(usnchanged>="+ (Dispatcher.HighestUsnChanged + 1) +"))", SearchScope.Subtree, null);
request.Controls.Add(new ShowDeletedControl());
// Page result
var prc = new PageResultRequestControl(5);
request.Controls.Add(prc);
var soc = new SearchOptionsControl(System.DirectoryServices.Protocols.SearchOption.DomainScope);
request.Controls.Add(soc);
while (true)
{
var searchResponse = (SearchResponse) Connection.SendRequest(request);
if (searchResponse != null)
{
// Find the returned page response control
foreach (DirectoryControl control in searchResponse.Controls)
{
if (control is PageResultResponseControl)
{
//update the cookie for next set
prc.Cookie = ((PageResultResponseControl) control).Cookie;
break;
}
}
Dispatcher.AddToQueue(searchResponse.Entries.Cast<SearchResultEntry>().Where(p =>LdapHelper.IsUser(p, PersonObjectCategory) || LdapHelper.IsGroup(p, GroupObjectCategory)).ToList());
if (prc.Cookie.Length == 0)
{
break;
}
}
else
{
break;
}
}
}
catch (Exception ex)
{
LogError("Full synchronization failed.", ex);
}
}
/// <summary>
/// Performs LDAP Search and extracts attributes.
/// </summary>
/// <param name="logger">The logger.</param>
/// <param name="CurrentTime">Locked program timestamp value</param>
private void ExtractLDAPResults(LogHelper logger, DateTime CurrentTime)
{
List<string> AttributesToAdd = new List<string>();
foreach (PropertyBase item in this.Properties)
AttributesToAdd.Add(item.Mapping);
string[] _attrs = AttributesToAdd.ToArray();
String sFilter = SetQueryFilter(this.BatchAction, CurrentTime);
SearchRequest searchRequest = new SearchRequest(this.SearchRoot, sFilter, SearchScope.Subtree, _attrs);
PageResultRequestControl PageResponse = new PageResultRequestControl(this.PageSize);
SearchOptionsControl SearchOptions = new SearchOptionsControl(System.DirectoryServices.Protocols.SearchOption.DomainScope);
searchRequest.Controls.Add(PageResponse);
searchRequest.Controls.Add(SearchOptions);
logger.LogVerbose(string.Format("Establishing LDAP Connection to: {0}", this.ServerName));
using(LdapConnection connection = CreateLDAPConnection())
{
logger.LogVerbose(string.Format("Performing a {0} operation with filter: {1}", this.BatchAction, sFilter));
while (true)
{
SearchResponse response = null;
try
{
response = connection.SendRequest(searchRequest) as SearchResponse;
}
catch(Exception ex)
{
throw new Exception("An error occurred whilst creating the SearchResponse", ex);
}
int ResponseCount = response.Entries.Count;
int CurrentBatchSize;
if (ResponseCount != this.PageSize)
CurrentBatchSize = ResponseCount;
else
CurrentBatchSize = this.PageSize;
string FilePath = CSVCreateFile(this.CSVDirectoryLocation, _TotalUsers, CurrentBatchSize);
foreach (DirectoryControl control in response.Controls)
{
if (control is PageResultResponseControl)
{
PageResponse.Cookie = ((PageResultResponseControl)control).Cookie;
break;
}
}
// Create CSV file for current batch of users
using (CSVWriter BatchFile = new CSVWriter(FilePath))
{
// Create column headings for CSV file
CSVUserEntry heading = new CSVUserEntry();
// Iterate over attribute headings
foreach (PropertyBase item in this.Properties)
heading.Add(item.Name);
BatchFile.CSVWriteUser(heading, logger);
// Create new CSV row for each user
foreach (SearchResultEntry sre in response.Entries)
{
// Placeholder for CSV entry of current user
CSVUserEntry user = new CSVUserEntry();
// Exract each user attribute specified in XML file
foreach (PropertyBase item in this.Properties)
{
try
{
DirectoryAttribute attr = sre.Attributes[item.Mapping];
string value = string.Empty;
if (null != attr && attr.Count > 0)
value = attr[0].ToString();
if (item.Index == this.UserNameIndex)
user.Add(CreateUserAccountName(value, attr));
else
user.Add(value);
}
catch (Exception ex)
{
if (logger != null)
{
logger.LogException(string.Empty, ex);
_TotalFailures++;
}
}
}
// Write current user to CSV file
BatchFile.CSVWriteUser(user, logger);
// Increment user count value
_TotalUsers++;
}
}
logger.LogVerbose(string.Format("Successfully extracted {0} users to {1} - the total user count is: {2}", CurrentBatchSize, FilePath, _TotalUsers));
if (PageResponse.Cookie.Length == 0)
break;
}
}
}