Moving micasa 1.5 trunk to Novell forge.
This commit is contained in:
Cameron (Kamran) Mashayekhi
396
c_micasad/lss/LocalStorage.cs
Normal file
396
c_micasad/lss/LocalStorage.cs
Normal file
@@ -0,0 +1,396 @@
|
||||
using System;
|
||||
using System.IO;
|
||||
using System.Text;
|
||||
using System.Collections;
|
||||
using System.Threading;
|
||||
using System.Security.Cryptography;
|
||||
using System.Xml;
|
||||
using sscs.cache;
|
||||
using sscs.crypto;
|
||||
using sscs.common;
|
||||
using sscs.constants;
|
||||
using Novell.CASA.MiCasa.Common;
|
||||
|
||||
namespace sscs.lss
|
||||
{
|
||||
/// <summary>
|
||||
/*
|
||||
* This class is a service to store data persistently.
|
||||
* How it does this is determined by implementation within the
|
||||
* private methods (File system using file(s), database, etc)
|
||||
* The MasterPasscode can be used to generate the key for
|
||||
* encyption and decryption.
|
||||
* If encrpytion is used, the private methods will also manage
|
||||
* how the encyption key is to be stored and retrieved.
|
||||
* Each piece of data is located by a DataID.
|
||||
* This might be an individual credentail or
|
||||
* a complete store.
|
||||
*/
|
||||
|
||||
/* We might not need this as a separate class.
|
||||
* Depending on the db changes, we can change this later.
|
||||
*/
|
||||
|
||||
/// </summary>
|
||||
public class LocalStorage
|
||||
{
|
||||
private byte[] m_baGeneratedKey = null;
|
||||
private SecretStore userStore = null;
|
||||
|
||||
private int persistThreadSleepTime = 1000 * 60 * 5; //1000 * 30;
|
||||
private Thread persistThread = null;
|
||||
|
||||
private static string LINUXID = "Unix";
|
||||
|
||||
internal LocalStorage(SecretStore store,byte[] baMasterPasscode)
|
||||
{
|
||||
userStore = store;
|
||||
m_baGeneratedKey = baMasterPasscode;
|
||||
LoadPersistentStore();
|
||||
userStore.DumpSecretstore();
|
||||
persistThread = new Thread(new ThreadStart(PersistStoreThreadFn));
|
||||
persistThread.Start();
|
||||
}
|
||||
~LocalStorage()
|
||||
{
|
||||
if(persistThread != null)
|
||||
{
|
||||
persistThread.Abort();
|
||||
persistThread.Join();
|
||||
}
|
||||
}
|
||||
|
||||
// allowing a user to choose the storage location is not approved yet
|
||||
private LocalStorage(SecretStore store,
|
||||
byte[] baMasterPasscode, string sStorageDirectory)
|
||||
{
|
||||
userStore = store;
|
||||
m_baGeneratedKey = baMasterPasscode;
|
||||
LoadPersistentStore();
|
||||
userStore.DumpSecretstore();
|
||||
persistThread = new Thread(new ThreadStart(PersistStoreThreadFn));
|
||||
persistThread.Start();
|
||||
}
|
||||
|
||||
public void StorePersistentData(string sDataID, byte[] baData)
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
public byte[] RetrievePersistentData(string sDataID)
|
||||
{
|
||||
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
public bool StopPersistence()
|
||||
{
|
||||
if(persistThread != null)
|
||||
{
|
||||
persistThread.Abort();
|
||||
persistThread.Join();
|
||||
}
|
||||
return true;
|
||||
}
|
||||
private string GetDecryptedXml()
|
||||
{
|
||||
try
|
||||
{
|
||||
string fileName = userStore.GetPersistenceFilePath();
|
||||
if(!File.Exists(fileName))
|
||||
return null;
|
||||
|
||||
byte[] baPasscode = CASACrypto.GetMasterPasscode(userStore.GetDesktopPasswd(),userStore.GetPasscodeByDesktopFilePath());
|
||||
if( null == baPasscode )
|
||||
return null;
|
||||
|
||||
byte[] key = CASACrypto.GetKeySetFromFile(baPasscode,userStore.GetKeyFilePath());
|
||||
if( null == key )
|
||||
return null;
|
||||
|
||||
byte[] decryptedBuffer = CASACrypto.ReadFileAndDecryptData(key,fileName);
|
||||
|
||||
if( null == decryptedBuffer )
|
||||
return null;
|
||||
|
||||
char[] chArr = new char[decryptedBuffer.Length];
|
||||
for(int z = 0; z < decryptedBuffer.Length; z++ )
|
||||
{
|
||||
chArr[z] = (char)decryptedBuffer[z];
|
||||
}
|
||||
string toReturn = new string(chArr);
|
||||
return toReturn;
|
||||
}
|
||||
catch(Exception e)
|
||||
{
|
||||
CSSSLogger.ExpLog(e.ToString());
|
||||
CSSSLogger.DbgLog("Unable to get persistent store");
|
||||
}
|
||||
return null;
|
||||
}
|
||||
/* This method, uses the key to decrypt the persistent store
|
||||
* and populates userStore with the persistent data.
|
||||
*/
|
||||
private bool LoadPersistentStore()
|
||||
{
|
||||
try
|
||||
{
|
||||
string xpath = "";
|
||||
XmlDocument doc = new XmlDocument();
|
||||
|
||||
string xmlToLoad = GetDecryptedXml();
|
||||
if(xmlToLoad != null)
|
||||
{
|
||||
doc.LoadXml(xmlToLoad);
|
||||
|
||||
#if false
|
||||
XmlTextWriter writer = new XmlTextWriter("/home/poorna/.miCASA.xml",null);
|
||||
writer.Formatting = Formatting.Indented;
|
||||
doc.Save(writer);
|
||||
writer.Close();
|
||||
#endif
|
||||
}
|
||||
else
|
||||
{
|
||||
return false;
|
||||
}
|
||||
xpath = "//" + XmlConsts.miCASANode;
|
||||
XmlNode miCASANode = doc.SelectSingleNode(xpath);
|
||||
if(miCASANode != null)
|
||||
{
|
||||
xpath = "descendant::" + XmlConsts.keyChainNode;
|
||||
XmlNodeList keyChainNodeList = miCASANode.SelectNodes(xpath);
|
||||
foreach(XmlNode node in keyChainNodeList)
|
||||
{
|
||||
XmlAttributeCollection attrColl = node.Attributes;
|
||||
string keyChainId = (attrColl[XmlConsts.idAttr]).Value + "\0";
|
||||
KeyChain keyChain = null;
|
||||
|
||||
if( userStore.CheckIfKeyChainExists(keyChainId) == false )
|
||||
{
|
||||
keyChain = new KeyChain(keyChainId);
|
||||
userStore.AddKeyChain(keyChain);
|
||||
}
|
||||
else
|
||||
{
|
||||
keyChain = userStore.GetKeyChain(keyChainId);
|
||||
}
|
||||
xpath = "descendant::" + XmlConsts.secretNode;
|
||||
XmlNodeList secretNodeList = node.SelectNodes(xpath);
|
||||
foreach(XmlNode secretNode in secretNodeList)
|
||||
{
|
||||
attrColl = secretNode.Attributes;
|
||||
string secretId = (attrColl[XmlConsts.idAttr]).Value + "\0";
|
||||
xpath = "descendant::" + XmlConsts.valueNode;
|
||||
Secret secret = new Secret(secretId);
|
||||
if( keyChain.CheckIfSecretExists(secretId) == false)
|
||||
{
|
||||
keyChain.AddSecret(secret);
|
||||
XmlNode secretValNode = (secretNode.SelectSingleNode(xpath));
|
||||
xpath = "descendant::" + XmlConsts.keyNode;
|
||||
|
||||
XmlNodeList keyNodeList = secretValNode.SelectNodes(xpath);
|
||||
|
||||
secret = keyChain.GetSecret(secretId);
|
||||
foreach(XmlNode keyNode in keyNodeList)
|
||||
{
|
||||
attrColl = keyNode.Attributes;
|
||||
string key;
|
||||
try
|
||||
{
|
||||
key = (attrColl[XmlConsts.idAttr]).Value;
|
||||
}
|
||||
catch (Exception)
|
||||
{
|
||||
// LinkedKey node, continue
|
||||
continue;
|
||||
}
|
||||
xpath = "descendant::" + XmlConsts.keyValueNode;
|
||||
XmlNode keyValNode = keyNode.SelectSingleNode(xpath);
|
||||
string keyValue = keyValNode.InnerText;
|
||||
secret.SetKeyValue(key,keyValue);
|
||||
|
||||
|
||||
// add linked keys
|
||||
xpath = "descendant::" + XmlConsts.linkedKeyNode;
|
||||
XmlNodeList linkNodeList = keyNode.SelectNodes(xpath);
|
||||
foreach(XmlNode linkNode in linkNodeList)
|
||||
{
|
||||
// get TargetSecretID
|
||||
xpath = "descendant::" + XmlConsts.linkedTargetSecretNode;
|
||||
XmlNode targetSecretNode = linkNode.SelectSingleNode(xpath);
|
||||
string sSecretID = targetSecretNode.InnerText + "\0";
|
||||
|
||||
// get TargetSecretKey
|
||||
xpath = "descendant::" + XmlConsts.linkedTargetKeyNode;
|
||||
XmlNode targetKeyNode = linkNode.SelectSingleNode(xpath);
|
||||
string sKeyID = targetKeyNode.InnerText;
|
||||
|
||||
LinkedKeyInfo lki = new LinkedKeyInfo(sSecretID, sKeyID);
|
||||
KeyValue kv = secret.GetKeyValue(key);
|
||||
kv.AddLink(lki);
|
||||
}
|
||||
|
||||
}
|
||||
}//if ends
|
||||
}
|
||||
|
||||
}//end of traversing keyChainNodeList
|
||||
}
|
||||
}
|
||||
catch(Exception e)
|
||||
{
|
||||
CSSSLogger.ExpLog(e.ToString());
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
private void PersistStoreThreadFn()
|
||||
{
|
||||
while(true)
|
||||
{
|
||||
Thread.Sleep(persistThreadSleepTime);
|
||||
PersistStore();
|
||||
}
|
||||
}
|
||||
|
||||
/* Persists the store to an xml file.
|
||||
* TBD : Would we require any form of encoding?
|
||||
*/
|
||||
|
||||
internal void PersistStore()
|
||||
{
|
||||
// userStore.DumpSecretstore();
|
||||
try
|
||||
{
|
||||
string fileName = userStore.GetPersistenceFilePath();
|
||||
|
||||
if(File.Exists(fileName))
|
||||
{
|
||||
File.Delete(fileName);
|
||||
}
|
||||
|
||||
MemoryStream ms1 = new MemoryStream();
|
||||
XmlTextWriter writer = new XmlTextWriter(ms1,null);
|
||||
writer.Formatting = Formatting.Indented;
|
||||
|
||||
writer.WriteStartDocument();
|
||||
writer.WriteStartElement(XmlConsts.miCASANode);
|
||||
writer.WriteAttributeString(XmlConsts.versionAttr,"1.5");
|
||||
|
||||
{
|
||||
IDictionaryEnumerator iter = (IDictionaryEnumerator)userStore.GetKeyChainEnumerator();
|
||||
char [] tmpId;
|
||||
string sTmpId;
|
||||
while( iter.MoveNext() )
|
||||
{
|
||||
KeyChain kc = (KeyChain)iter.Value;
|
||||
writer.WriteStartElement(XmlConsts.keyChainNode);
|
||||
string kcId = kc.GetKey();
|
||||
tmpId = new char[kcId.Length-1];
|
||||
for(int i = 0; i < kcId.Length-1; i++ )
|
||||
tmpId[i] = kcId[i];
|
||||
sTmpId = new string(tmpId);
|
||||
|
||||
writer.WriteAttributeString(XmlConsts.idAttr,sTmpId);
|
||||
/* If we need to store time
|
||||
writer.WriteStartElement(XmlConsts.timeNode);
|
||||
writer.WriteAttributeString(XmlConsts.createdTimeNode,kc.CreatedTime.ToString());
|
||||
writer.WriteAttributeString(XmlConsts.modifiedTimeNode,kc.ModifiedTime.ToString());
|
||||
writer.WriteEndElement();
|
||||
*/
|
||||
|
||||
IDictionaryEnumerator secIter = (IDictionaryEnumerator)(kc.GetAllSecrets());
|
||||
while(secIter.MoveNext())
|
||||
{
|
||||
Secret secret = (Secret)secIter.Value;
|
||||
writer.WriteStartElement(XmlConsts.secretNode);
|
||||
string secretId = secret.GetKey();
|
||||
tmpId = new char[secretId.Length-1];
|
||||
for(int i = 0; i < secretId.Length-1; i++ )
|
||||
tmpId[i] = secretId[i];
|
||||
sTmpId = new string(tmpId);
|
||||
|
||||
writer.WriteAttributeString(XmlConsts.idAttr,sTmpId);
|
||||
/* If we need to store time
|
||||
writer.WriteStartElement(XmlConsts.timeNode);
|
||||
writer.WriteAttributeString(XmlConsts.createdTimeNode,secret.CreatedTime.ToString());
|
||||
writer.WriteAttributeString(XmlConsts.modifiedTimeNode,secret.ModifiedTime.ToString());
|
||||
writer.WriteEndElement();
|
||||
*/
|
||||
|
||||
writer.WriteStartElement(XmlConsts.valueNode);
|
||||
// byte[] byteArr = secret.GetValue();
|
||||
|
||||
IDictionaryEnumerator etor = (IDictionaryEnumerator)secret.GetKeyValueEnumerator();
|
||||
while(etor.MoveNext())
|
||||
{
|
||||
string sKey = (string)etor.Key;
|
||||
string value = secret.GetKeyValue(sKey).GetValue();
|
||||
writer.WriteStartElement(XmlConsts.keyNode);
|
||||
writer.WriteAttributeString(XmlConsts.idAttr, sKey);
|
||||
writer.WriteStartElement(XmlConsts.keyValueNode);
|
||||
writer.WriteString(value);
|
||||
writer.WriteEndElement();
|
||||
/* If we need to store time
|
||||
writer.WriteStartElement(XmlConsts.timeNode);
|
||||
writer.WriteAttributeString(XmlConsts.createdTimeNode,(secret.GetKeyValueCreatedTime(sKey)).ToString());
|
||||
writer.WriteAttributeString(XmlConsts.modifiedTimeNode,(secret.GetKeyValueModifiedTime(sKey)).ToString());
|
||||
writer.WriteEndElement();
|
||||
*/
|
||||
// write all LinkKeys
|
||||
Hashtable htLinkedKeys = secret.GetLinkedKeys(sKey);
|
||||
if (htLinkedKeys != null)
|
||||
{
|
||||
IDictionaryEnumerator etorLinked = (IDictionaryEnumerator)htLinkedKeys.GetEnumerator();
|
||||
while(etorLinked.MoveNext())
|
||||
{
|
||||
LinkedKeyInfo lki = (LinkedKeyInfo)etorLinked.Value;
|
||||
writer.WriteStartElement(XmlConsts.linkedKeyNode);
|
||||
|
||||
writer.WriteStartElement(XmlConsts.linkedTargetSecretNode);
|
||||
writer.WriteString(lki.GetLinkedSecretID().Substring(0, lki.GetLinkedSecretID().Length-1));
|
||||
writer.WriteEndElement();
|
||||
|
||||
writer.WriteStartElement(XmlConsts.linkedTargetKeyNode);
|
||||
writer.WriteString(lki.GetLinkedKeyID());
|
||||
writer.WriteEndElement();
|
||||
|
||||
writer.WriteEndElement();
|
||||
}
|
||||
}
|
||||
|
||||
writer.WriteEndElement();
|
||||
}
|
||||
|
||||
/*
|
||||
char[] chArr = new char[byteArr.Length];
|
||||
for(int z = 0; z < byteArr.Length; z++)
|
||||
chArr[z] = (char)byteArr[z];
|
||||
|
||||
string stringToStore = new string(chArr);
|
||||
writer.WriteString(stringToStore);
|
||||
*/
|
||||
|
||||
writer.WriteEndElement(); //end of value node
|
||||
writer.WriteEndElement();
|
||||
}
|
||||
writer.WriteEndElement(); //keychain
|
||||
}
|
||||
}
|
||||
writer.WriteEndElement(); //miCASA node
|
||||
writer.WriteEndDocument();
|
||||
writer.Flush();
|
||||
writer.Close();
|
||||
|
||||
byte[] key = CASACrypto.GetKeySetFromFile(CASACrypto.GetMasterPasscode(userStore.GetDesktopPasswd(),userStore.GetPasscodeByDesktopFilePath()),userStore.GetKeyFilePath());
|
||||
CASACrypto.EncryptDataAndWriteToFile(ms1.ToArray(),key,fileName);
|
||||
}
|
||||
catch(Exception e)
|
||||
{
|
||||
CSSSLogger.ExpLog(e.ToString());
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user