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