390 lines
9.2 KiB
C#
390 lines
9.2 KiB
C#
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// This code is derived from jcifs smb client library <jcifs at samba dot org>
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// Ported by J. Arturo <webmaster at komodosoft dot net>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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using System.IO;
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using SharpCifs.Util;
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using SharpCifs.Util.Sharpen;
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namespace SharpCifs.Smb
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{
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public class Dfs
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{
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internal class CacheEntry
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{
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internal long Expiration;
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internal Hashtable Map;
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internal CacheEntry(long ttl)
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{
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if (ttl == 0)
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{
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ttl = Ttl;
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}
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Expiration = Runtime.CurrentTimeMillis() + ttl * 1000L;
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Map = new Hashtable();
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}
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}
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internal static LogStream Log = LogStream.GetInstance();
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internal static readonly bool StrictView = Config.GetBoolean("jcifs.smb.client.dfs.strictView"
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, false);
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internal static readonly long Ttl = Config.GetLong("jcifs.smb.client.dfs.ttl", 300
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);
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internal static readonly bool Disabled = Config.GetBoolean("jcifs.smb.client.dfs.disabled"
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, false);
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internal static CacheEntry FalseEntry = new CacheEntry(0L);
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internal CacheEntry Domains;
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internal CacheEntry Referrals;
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/// <exception cref="SharpCifs.Smb.SmbAuthException"></exception>
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public virtual Hashtable GetTrustedDomains(NtlmPasswordAuthentication auth)
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{
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if (Disabled || auth.Domain == "?")
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{
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return null;
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}
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if (Domains != null && Runtime.CurrentTimeMillis() > Domains.Expiration)
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{
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Domains = null;
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}
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if (Domains != null)
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{
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return Domains.Map;
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}
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try
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{
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UniAddress addr = UniAddress.GetByName(auth.Domain, true);
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SmbTransport trans = SmbTransport.GetSmbTransport(addr, 0);
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CacheEntry entry = new CacheEntry(Ttl * 10L);
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DfsReferral dr = trans.GetDfsReferrals(auth, string.Empty, 0);
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if (dr != null)
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{
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DfsReferral start = dr;
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do
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{
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string domain = dr.Server.ToLower();
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entry.Map.Put(domain, new Hashtable());
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dr = dr.Next;
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}
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while (dr != start);
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Domains = entry;
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return Domains.Map;
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}
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}
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catch (IOException ioe)
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{
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if (Log.Level >= 3)
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{
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Runtime.PrintStackTrace(ioe, Log);
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}
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if (StrictView && ioe is SmbAuthException)
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{
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throw (SmbAuthException)ioe;
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}
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}
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return null;
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}
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/// <exception cref="SharpCifs.Smb.SmbAuthException"></exception>
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public virtual bool IsTrustedDomain(string domain, NtlmPasswordAuthentication auth
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)
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{
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Hashtable domains = GetTrustedDomains(auth);
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if (domains == null)
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{
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return false;
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}
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domain = domain.ToLower();
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return domains.Get(domain) != null;
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}
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/// <exception cref="SharpCifs.Smb.SmbAuthException"></exception>
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public virtual SmbTransport GetDc(string domain, NtlmPasswordAuthentication auth)
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{
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if (Disabled)
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{
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return null;
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}
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try
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{
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UniAddress addr = UniAddress.GetByName(domain, true);
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SmbTransport trans = SmbTransport.GetSmbTransport(addr, 0);
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DfsReferral dr = trans.GetDfsReferrals(auth, "\\" + domain, 1);
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if (dr != null)
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{
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DfsReferral start = dr;
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IOException e = null;
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do
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{
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try
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{
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addr = UniAddress.GetByName(dr.Server);
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return SmbTransport.GetSmbTransport(addr, 0);
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}
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catch (IOException ioe)
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{
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e = ioe;
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}
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dr = dr.Next;
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}
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while (dr != start);
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throw e;
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}
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}
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catch (IOException ioe)
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{
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if (Log.Level >= 3)
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{
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Runtime.PrintStackTrace(ioe, Log);
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}
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if (StrictView && ioe is SmbAuthException)
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{
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throw (SmbAuthException)ioe;
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}
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}
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return null;
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}
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/// <exception cref="SharpCifs.Smb.SmbAuthException"></exception>
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public virtual DfsReferral GetReferral(SmbTransport trans, string domain, string
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root, string path, NtlmPasswordAuthentication auth)
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{
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if (Disabled)
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{
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return null;
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}
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try
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{
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string p = "\\" + domain + "\\" + root;
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if (path != null)
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{
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p += path;
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}
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DfsReferral dr = trans.GetDfsReferrals(auth, p, 0);
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if (dr != null)
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{
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return dr;
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}
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}
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catch (IOException ioe)
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{
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if (Log.Level >= 4)
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{
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Runtime.PrintStackTrace(ioe, Log);
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}
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if (StrictView && ioe is SmbAuthException)
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{
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throw (SmbAuthException)ioe;
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}
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}
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return null;
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}
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/// <exception cref="SharpCifs.Smb.SmbAuthException"></exception>
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public virtual DfsReferral Resolve(string domain, string root, string path, NtlmPasswordAuthentication
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auth)
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{
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lock (this)
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{
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DfsReferral dr = null;
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long now = Runtime.CurrentTimeMillis();
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if (Disabled || root.Equals("IPC$"))
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{
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return null;
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}
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Hashtable domains = GetTrustedDomains(auth);
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if (domains != null)
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{
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domain = domain.ToLower();
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Hashtable roots = (Hashtable)domains.Get(domain);
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if (roots != null)
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{
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SmbTransport trans = null;
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root = root.ToLower();
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CacheEntry links = (CacheEntry)roots.Get(root);
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if (links != null && now > links.Expiration)
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{
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//Sharpen.Collections.Remove(roots, root);
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roots.Remove(root);
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links = null;
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}
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if (links == null)
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{
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if ((trans = GetDc(domain, auth)) == null)
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{
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return null;
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}
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dr = GetReferral(trans, domain, root, path, auth);
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if (dr != null)
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{
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int len = 1 + domain.Length + 1 + root.Length;
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links = new CacheEntry(0L);
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DfsReferral tmp = dr;
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do
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{
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if (path == null)
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{
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// TODO: fix this
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//tmp.map = links.map;
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tmp.Key = "\\";
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}
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tmp.PathConsumed -= len;
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tmp = tmp.Next;
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}
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while (tmp != dr);
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if (dr.Key != null)
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{
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links.Map.Put(dr.Key, dr);
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}
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roots.Put(root, links);
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}
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else
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{
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if (path == null)
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{
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roots.Put(root, FalseEntry);
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}
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}
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}
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else
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{
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if (links == FalseEntry)
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{
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links = null;
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}
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}
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if (links != null)
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{
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string link = "\\";
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dr = (DfsReferral)links.Map.Get(link);
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if (dr != null && now > dr.Expiration)
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{
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//Sharpen.Collections.Remove(links.map, link);
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links.Map.Remove(link);
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dr = null;
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}
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if (dr == null)
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{
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if (trans == null)
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{
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if ((trans = GetDc(domain, auth)) == null)
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{
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return null;
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}
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}
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dr = GetReferral(trans, domain, root, path, auth);
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if (dr != null)
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{
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dr.PathConsumed -= 1 + domain.Length + 1 + root.Length;
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dr.Link = link;
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links.Map.Put(link, dr);
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}
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}
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}
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}
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}
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if (dr == null && path != null)
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{
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if (Referrals != null && now > Referrals.Expiration)
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{
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Referrals = null;
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}
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if (Referrals == null)
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{
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Referrals = new CacheEntry(0);
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}
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string key = "\\" + domain + "\\" + root;
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if (path.Equals("\\") == false)
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{
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key += path;
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}
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key = key.ToLower();
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//ListIterator<object> iter = new ListIterator<object>(referrals.map.Keys.GetEnumerator(), 0);
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foreach (var current in Referrals.Map.Keys)
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{
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string _key = (string)current;
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int klen = _key.Length;
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bool match = false;
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if (klen == key.Length)
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{
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match = _key.Equals(key);
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}
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else
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{
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if (klen < key.Length)
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{
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match = _key.RegionMatches(false, 0, key, 0, klen) && key[klen] == '\\';
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}
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}
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if (match)
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{
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dr = (DfsReferral)Referrals.Map.Get(_key);
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}
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}
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}
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return dr;
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}
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}
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internal virtual void Insert(string path, DfsReferral dr)
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{
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lock (this)
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{
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int s1;
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int s2;
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string server;
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string share;
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string key;
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if (Disabled)
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{
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return;
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}
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s1 = path.IndexOf('\\', 1);
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s2 = path.IndexOf('\\', s1 + 1);
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server = Runtime.Substring(path, 1, s1);
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share = Runtime.Substring(path, s1 + 1, s2);
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key = Runtime.Substring(path, 0, dr.PathConsumed).ToLower();
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int ki = key.Length;
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while (ki > 1 && key[ki - 1] == '\\')
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{
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ki--;
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}
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if (ki < key.Length)
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{
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key = Runtime.Substring(key, 0, ki);
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}
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dr.PathConsumed -= 1 + server.Length + 1 + share.Length;
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if (Referrals != null && (Runtime.CurrentTimeMillis() + 10000) > Referrals.Expiration)
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{
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Referrals = null;
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}
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if (Referrals == null)
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{
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Referrals = new CacheEntry(0);
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}
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Referrals.Map.Put(key, dr);
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}
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}
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}
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}
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