286 lines
9.6 KiB
C#
286 lines
9.6 KiB
C#
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using System;
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using System.Collections;
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using System.Text;
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using System.Threading;
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using sscs.verbs;
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using sscs.common;
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using sscs.cache;
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using sscs.constants;
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using Novell.CASA.MiCasa.Common;
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namespace sscs.verbs
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{
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/*
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* This class is implementation of WriteKey call.
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* There will be one instance existing for every call made by the client.
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*/
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class WriteKey : SSVerb
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{
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private ushort msgId = 0;
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private uint inMsgLen = 0;
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private uint outMsgLen = 0;
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private uint keyChainIdLen = 0;
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private uint secretIdLen = 0;
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private uint secretValLen = 0;
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private int retCode = 0;
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private string keyChainId;
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private string secretId;
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private uint keyLen;
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private string key;
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private uint valLen;
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private byte[] val;
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private string valStr;
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private byte[] inBuf;
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private byte[] outBuf;
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// extension operations
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private uint extId = 0;
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#if W32
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private int luidLow = 0;
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private int luidHigh = 0;
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#endif
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/*
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* This method sets the class member with the byte array received.
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*/
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public void SetMessageContent(byte[] ipcBytes)
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{
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CSSSLogger.ExecutionTrace(this);
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inBuf = ipcBytes;
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}
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/*
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* This method does the actual implementation of WriteKey
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*
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*/
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public byte[] ProcessRequest(UserIdentifier userId)
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{
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CSSSLogger.ExecutionTrace(this);
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UserIdentifier tempUserId = userId;
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// Message Format decipher - Start
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msgId = BitConverter.ToUInt16(inBuf,0);
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inMsgLen = BitConverter.ToUInt32(inBuf,2);
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if( inMsgLen != inBuf.Length )
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throw new FormatException(" MsgLen sent does not match the length of the message received.");
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keyChainIdLen = BitConverter.ToUInt32(inBuf,6);
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byte[] keyChainIdArr = new byte[keyChainIdLen];
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Array.Copy(inBuf,10,keyChainIdArr,0,keyChainIdLen);
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keyChainId = Encoding.UTF8.GetString(keyChainIdArr);
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secretIdLen = BitConverter.ToUInt32(inBuf,
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(10 + (int)keyChainIdLen ));
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byte[] secretIdArr = new byte[secretIdLen];
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Array.Copy(inBuf,(10+keyChainIdLen+4),secretIdArr,0,secretIdLen);
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secretId = Encoding.UTF8.GetString(secretIdArr);
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keyLen = BitConverter.ToUInt32(inBuf,(14+(int)keyChainIdLen+(int)secretIdLen));
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byte[] keyArr = new byte[keyLen];
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Array.Copy(inBuf,(18+keyChainIdLen+secretIdLen),keyArr,0,keyLen);
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key = Encoding.UTF8.GetString(keyArr);
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valLen = BitConverter.ToUInt32(inBuf,(18+(int)keyChainIdLen+(int)secretIdLen+(int)keyLen));
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val = new byte[valLen];
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Array.Copy(inBuf,(22+keyChainIdLen+secretIdLen+keyLen),val,0,valLen);
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valStr = Encoding.UTF8.GetString(val);
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try
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{
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// get extension ID
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int extLocation = 26 + ((int)keyChainIdLen) + ((int)secretIdLen) + ((int)keyLen) + ((int)valLen);
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extId = BitConverter.ToUInt32(inBuf, extLocation);
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}
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catch (Exception)
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{
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//CSSSLogger.ExpLog(e.ToString());
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}
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if (extId == 1)
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{
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#if W32
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// WINDOWS LUID
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// This is how the Login Capture module on windows, running as System, sets the Desktop Credential.
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// we might be able to change this if/when we abstract the session.
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// [4 byte extID][4 byte length][4 byte luidLow][4 byte luidHigh]
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luidLow = BitConverter.ToInt32(inBuf, 26 + ((int)keyChainIdLen)+((int)secretIdLen) +((int)keyLen) + (int)valLen + 8);
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luidHigh = BitConverter.ToInt32(inBuf, 26 + ((int)keyChainIdLen)+((int)secretIdLen) +((int)keyLen) + (int)valLen + 12);
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tempUserId = new WinUserIdentifier(luidLow, luidHigh);
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SecretStore ss = SessionManager.CreateUserSession(tempUserId);
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try
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{
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ss.AddKeyChain(new KeyChain("SSCS_SESSION_KEY_CHAIN_ID\0"));
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}
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catch (Exception)
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{
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}
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#endif
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}
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try
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{
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KeyChain keyChain = null;
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SecretStore ssStore = SessionManager.GetUserSecretStore(tempUserId);
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if (!ssStore.IsStoreLocked())
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{
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if( ssStore.CheckIfKeyChainExists(keyChainId) )
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{
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keyChain = ssStore.GetKeyChain(keyChainId);
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Secret secret = null;
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// add this secret if it doesn't already exist
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if( keyChain.CheckIfSecretExists(secretId) == false)
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{
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secret = new Secret(secretId);
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keyChain.AddSecret(secret);
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}
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else
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{
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secret = keyChain.GetSecret(secretId);
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}
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string oldPasswd = null;
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if((ConstStrings.MICASA_DESKTOP_PASSWD == secretId) &&
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(ConstStrings.MICASA_DESKTOP_PASSWD_KEYNAME == key)
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)
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{
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KeyValue kv = secret.GetKeyValue(ConstStrings.MICASA_DESKTOP_PASSWD_KEYNAME);
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if( null != kv )
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oldPasswd = kv.GetValue();
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}
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secret.SetKeyValue(key,valStr);
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if((ConstStrings.MICASA_DESKTOP_PASSWD == secretId) &&
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(ConstStrings.MICASA_DESKTOP_PASSWD_KEYNAME == key)
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)
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{
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string passwd = secret.GetKeyValue(ConstStrings.MICASA_DESKTOP_PASSWD_KEYNAME).GetValue();
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if( ( oldPasswd != null ) && ( passwd != null ) )
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{
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if( oldPasswd != passwd )
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{
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byte[] baPasscode = ssStore.GetPasscodeFromOldDesktopPasswd(oldPasswd);
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if( null != baPasscode )
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{
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ssStore.RewriteDesktopPasswdFile(baPasscode, passwd);
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}
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}
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}
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ssStore.StartPersistenceByDesktopPasswd(passwd);
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}
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// Now change all values for linked keys
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ChangeLinkedKeys(keyChain, secret, key, valStr);
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}
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else
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{
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retCode = IPCRetCodes.SSCS_E_KEYCHAIN_DOES_NOT_EXIST;
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}
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}
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else
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{
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// do nothing
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}
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}
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catch(UserNotInSessionException)
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{
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CSSSLogger.DbgLog("In " + CSSSLogger.GetExecutionPath(this) + " Unable to get user's secretstore" );
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retCode = IPCRetCodes.SSCS_E_SYSTEM_ERROR;
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}
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catch(Exception e )
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{
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CSSSLogger.ExpLog(e.ToString());
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retCode = IPCRetCodes.SSCS_E_SYSTEM_ERROR;
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}
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try
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{
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msgId = 9;
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outMsgLen = 10;
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outBuf = new byte[10];
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byte[] t = new byte[10];
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t = BitConverter.GetBytes((ushort)msgId);
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Array.Copy(t,0,outBuf,0,2);
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t = BitConverter.GetBytes((uint)outMsgLen);
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Array.Copy(t,0,outBuf,2,4);
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t = BitConverter.GetBytes(retCode);
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Array.Copy(t,0,outBuf,6,4);
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}
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catch(Exception e)
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{
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CSSSLogger.ExpLog(e.ToString());
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throw new FormatException("Unable to form the response " + e.ToString());
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}
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return outBuf;
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}
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private void ChangeLinkedKeys(KeyChain keyChain, Secret secret, string key, string valStr)
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{
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Hashtable htLinkedkeys = secret.GetLinkedKeys(key);
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if (htLinkedkeys != null)
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{
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// enumerate the hashtable, getting each secret/key and change it's value
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ICollection coll = htLinkedkeys.Values;
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IDictionaryEnumerator ienum = (IDictionaryEnumerator)coll.GetEnumerator();
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LinkedKeyInfo linkedInfo; // = (LinkedKeyInfo)ienum.Current;
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while (ienum.MoveNext())
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{
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linkedInfo = (LinkedKeyInfo)ienum.Value;
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// Get the target Secret
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Secret targetSecret = keyChain.GetSecret(linkedInfo.GetLinkedSecretID());
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if (targetSecret != null)
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{
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// get target key value
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string targetkv = targetSecret.GetKeyValue(linkedInfo.GetLinkedKeyID()).GetValue();
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// if a change is required in the target, then call this method recursively using the TargetSecret
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if (!targetkv.Equals(valStr))
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{
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// NOTE: ORDER IS IMPORTANT
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// first change this one
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targetSecret.SetKeyValue(linkedInfo.GetLinkedKeyID(), valStr);
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// now call the traget to change it's linked ones
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ChangeLinkedKeys(keyChain, targetSecret, key, valStr);
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}
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}
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}
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}
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}
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/*
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* Gives the name of operation performed. Will be used in case
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* of error.
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*/
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public string GetVerbName()
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{
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CSSSLogger.ExecutionTrace(this);
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return this.ToString();
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}
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}
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}
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