edits
[iotcloud.git] / version2 / src / C / CloudComm.cc
index c5da91a1b5d43166373797fc5c1af215aa300450..452317f42335854743b9e95cb3d1f81bc62e8858 100644 (file)
@@ -1,4 +1,9 @@
 #include "CloudComm.h"
+#include "TimingSingleton.h"
+#include "SecureRandom.h"
+#include "IoTString.h"
+#include "Error.h"
+#include "URL.h"
 
 /**
  * Empty Constructor needed for child class.
@@ -13,15 +18,15 @@ CloudComm::CloudComm() :
        table(NULL),
        listeningPort(-1),
        localServerThread(NULL),
-       doEnd(false)
-       timer(TimingSingleton.getInstance())
+       doEnd(false),
+       timer(TimingSingleton_getInstance())
 {
 }
 
 /**
  * Constructor for actual use. Takes in the url and password.
  */
-CloudComm::CloudComm(Table _table,  String _baseurl, String _password, int _listeningPort) :
+CloudComm::CloudComm(Table *_table,  IoTString *_baseurl, IoTString *_password, int _listeningPort) :
        baseurl(_baseurl),
        key(NULL),
        mac(NULL),
@@ -31,15 +36,15 @@ CloudComm::CloudComm(Table _table,  String _baseurl, String _password, int _list
        table(_table),
        listeningPort(_listeningPort),
        localServerThread(NULL),
-       doEnd(false)
-       timer(TimingSingleton.getInstance()) {
-       if (this.listeningPort > 0) {
+       doEnd(false),
+       timer(TimingSingleton_getInstance()) {
+       if (listeningPort > 0) {
                localServerThread = new Thread(new Runnable() {
                        void run() {
                                localServerWorkerFunction();
                        }
                });
-               localServerThread.start();
+               localServerThread->start();
        }
 }
 
@@ -48,14 +53,13 @@ CloudComm::CloudComm(Table _table,  String _baseurl, String _password, int _list
  */
 SecretKeySpec *CloudComm::initKey() {
        try {
-               PBEKeySpec keyspec = new PBEKeySpec(password.toCharArray(),
+               PBEKeySpec keyspec = new PBEKeySpec(password->internalBytes(),
                                                                                                                                                                salt,
                                                                                                                                                                65536,
                                                                                                                                                                128);
-               SecretKey tmpkey = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256").generateSecret(keyspec);
-               return new SecretKeySpec(tmpkey.getEncoded(), "AES");
-       } catch (Exception e) {
-               e.printStackTrace();
+               SecretKey tmpkey = SecretKeyFactory_getInstance("PBKDF2WithHmacSHA256")->generateSecret(keyspec);
+               return new SecretKeySpec(tmpkey->getEncoded(), "AES");
+       } catch (Exception *e) {
                throw new Error("Failed generating key.");
        }
 }
@@ -86,10 +90,9 @@ void CloudComm::initCrypt() {
        try {
                key = initKey();
                password = NULL;// drop password
-               mac = Mac.getInstance("HmacSHA256");
-               mac.init(key);
-       } catch (Exception e) {
-               e.printStackTrace();
+               mac = Mac_getInstance("HmacSHA256");
+               mac->init(key);
+       } catch (Exception *e) {
                throw new Error("Failed To Initialize Ciphers");
        }
 }
@@ -113,45 +116,44 @@ void CloudComm::setSalt() {
        }
 
        try {
-               char[] saltTmp = new char[SALT_SIZE];
-               random.nextBytes(saltTmp);
+               Array<char> *saltTmp = new Array<char>(CloudComm_SALT_SIZE);
+               random->nextBytes(saltTmp);
 
-               for (int i = 0; i < SALT_SIZE; i++) {
-                       System.out.println((int)saltTmp[i] & 255);
+               for (int i = 0; i < CloudComm_SALT_SIZE; i++) {
+                       printf("%d\n", (int)saltTmp->get(i) & 255);
                }
 
 
-               URL url = new URL(baseurl + "?req=setsalt");
+               URL *url = new URL(baseurl + "?req=setsalt");
 
-               timer.startTime();
-               URLConnection con = url.openConnection();
+               timer->startTime();
+               URLConnection con = url->openConnection();
                HttpURLConnection http = (HttpURLConnection) con;
 
-               http.setRequestMethod("POST");
-               http.setFixedLengthStreamingMode(saltTmp.length);
-               http.setDoOutput(true);
-               http.setConnectTimeout(TIMEOUT_MILLIS);
+               http->setRequestMethod("POST");
+               http->setFixedLengthStreamingMode(saltTmp->length());
+               http->setDoOutput(true);
+               http->setConnectTimeout(CloudComm_TIMEOUT_MILLIS);
 
 
-               http.connect();
+               http->connect();
 
-               OutputStream os = http.getOutputStream();
-               os.write(saltTmp);
-               os.flush();
+               OutputStream *os = http->getOutputStream();
+               os->write(saltTmp);
+               os->flush();
 
-               int responsecode = http.getResponseCode();
+               int responsecode = http->getResponseCode();
                if (responsecode != HttpURLConnection.HTTP_OK) {
                        // TODO: Remove this print
                        System.out.println(responsecode);
                        throw new Error("Invalid response");
                }
 
-               timer.endTime();
+               timer->endTime();
 
                salt = saltTmp;
-       } catch (Exception e) {
-               // e.printStackTrace();
-               timer.endTime();
+       } catch (Exception *e) {
+               timer->endTime();
                throw new ServerException("Failed setting salt", ServerException.TypeConnectTimeout);
        }
 }
@@ -163,33 +165,31 @@ bool CloudComm::getSalt() {
 
        try {
                url = new URL(baseurl + "?req=getsalt");
-       } catch (Exception e) {
-               // e.printStackTrace();
+       } catch (Exception *e) {
                throw new Error("getSlot failed");
        }
        try {
 
-               timer.startTime();
-               con = url.openConnection();
+               timer->startTime();
+               con = url->openConnection();
                http = (HttpURLConnection) con;
-               http.setRequestMethod("POST");
-               http.setConnectTimeout(TIMEOUT_MILLIS);
-               http.setReadTimeout(TIMEOUT_MILLIS);
+               http->setRequestMethod("POST");
+               http->setConnectTimeout(CloudComm_TIMEOUT_MILLIS);
+               http->setReadTimeout(CloudComm_TIMEOUT_MILLIS);
 
 
-               http.connect();
-               timer.endTime();
-       } catch (SocketTimeoutException e) {
-               timer.endTime();
+               http->connect();
+               timer->endTime();
+       } catch (SocketTimeoutException *e) {
+               timer->endTime();
                throw new ServerException("getSalt failed", ServerException.TypeConnectTimeout);
-       } catch (Exception e) {
-               // e.printStackTrace();
+       } catch (Exception *e) {
                throw new Error("getSlot failed");
        }
 
        try {
 
-               timer.startTime();
+               timer->startTime();
 
                int responsecode = http.getResponseCode();
                if (responsecode != HttpURLConnection.HTTP_OK) {
@@ -198,55 +198,53 @@ bool CloudComm::getSalt() {
                        throw new Error("Invalid response");
                }
 
-               InputStream is = http.getInputStream();
-               if (is.available() > 0) {
-                       DataInputStream dis = new DataInputStream(is);
-                       int salt_length = dis.readInt();
-                       char [] tmp = new char[salt_length];
-                       dis.readFully(tmp);
+               InputStream is = http->getInputStream();
+               if (is->available() > 0) {
+                       DataInputStream *dis = new DataInputStream(is);
+                       int salt_length = dis->readInt();
+                       Array<char> *tmp = new Array<char>(salt_length);
+                       dis->readFully(tmp);
                        salt = tmp;
-                       timer.endTime();
+                       timer->endTime();
 
                        return true;
                } else {
-                       timer.endTime();
+                       timer->endTime();
 
                        return false;
                }
-       } catch (SocketTimeoutException e) {
-               timer.endTime();
+       } catch (SocketTimeoutException *e) {
+               timer->endTime();
 
                throw new ServerException("getSalt failed", ServerException.TypeInputTimeout);
-       } catch (Exception e) {
-               // e.printStackTrace();
+       } catch (Exception *e) {
                throw new Error("getSlot failed");
        }
 }
 
 Array<char> *CloudComm::createIV(int64_t machineId, int64_t localSequenceNumber) {
-       ByteBuffer buffer = ByteBuffer.allocate(IV_SIZE);
-       buffer.putLong(machineId);
+       ByteBuffer buffer = ByteBuffer.allocate(CloudComm_IV_SIZE);
+       buffer->putLong(machineId);
        int64_t localSequenceNumberShifted = localSequenceNumber << 16;
-       buffer.putLong(localSequenceNumberShifted);
-       return buffer.array();
+       buffer->putLong(localSequenceNumberShifted);
+       return buffer->array();
 }
 
 Array<char> *CloudComm::encryptSlotAndPrependIV(Array<char> *rawData, Array<char> *ivBytes) {
        try {
                IvParameterSpec ivSpec = new IvParameterSpec(ivBytes);
                Cipher cipher = Cipher.getInstance("AES/CTR/NoPadding");
-               cipher.init(Cipher.ENCRYPT_MODE, key, ivSpec);
+               cipher->init(Cipher.ENCRYPT_MODE, key, ivSpec);
 
-               char[] encryptedBytes = cipher.doFinal(rawData);
+               Array<char> *encryptedBytes = cipher->doFinal(rawData);
 
-               char[] chars = new char[encryptedBytes.length + IV_SIZE];
-               System.arraycopy(ivBytes, 0, chars, 0, ivBytes.length);
-               System.arraycopy(encryptedBytes, 0, chars, IV_SIZE, encryptedBytes.length);
+               Array<char> *chars = new Array<char>(encryptedBytes->length() + CloudComm_IV_SIZE);
+               System_arraycopy(ivBytes, 0, chars, 0, ivBytes.length());
+               System_arraycopy(encryptedBytes, 0, chars, CloudComm_IV_SIZE, encryptedBytes.length);
 
                return chars;
 
-       } catch (Exception e) {
-               e.printStackTrace();
+       } catch (Exception *e) {
                throw new Error("Failed To Encrypt");
        }
 }
@@ -254,19 +252,18 @@ Array<char> *CloudComm::encryptSlotAndPrependIV(Array<char> *rawData, Array<char
 
 Array<char> *CloudComm::stripIVAndDecryptSlot(Array<char> *rawData) {
        try {
-               Array<char> *ivBytes = new char[IV_SIZE];
-               Array<char> *encryptedBytes = new char[rawData.length - IV_SIZE];
-               System.arraycopy(rawData, 0, ivBytes, 0, IV_SIZE);
-               System.arraycopy(rawData, IV_SIZE, encryptedBytes, 0, encryptedBytes.length);
+               Array<char> *ivBytes = new Array<char>(CloudComm_IV_SIZE);
+               Array<char> *encryptedBytes = new Array<char>(rawData->length() - CloudComm_IV_SIZE);
+               System_arraycopy(rawData, 0, ivBytes, 0, CloudComm_IV_SIZE);
+               System_arraycopy(rawData, CloudComm_IV_SIZE, encryptedBytes, 0, encryptedBytes->length);
 
-               IvParameterSpec ivSpec = new IvParameterSpec(ivBytes);
+               IvParameterSpec *ivSpec = new IvParameterSpec(ivBytes);
 
-               Cipher cipher = Cipher.getInstance("AES/CTR/NoPadding");
-               cipher.init(Cipher.DECRYPT_MODE, key, ivSpec);
-               return cipher.doFinal(encryptedBytes);
+               Cipher *cipher = Cipher_getInstance("AES/CTR/NoPadding");
+               cipher->init(Cipher_DECRYPT_MODE, key, ivSpec);
+               return cipher->doFinal(encryptedBytes);
 
-       } catch (Exception e) {
-               e.printStackTrace();
+       } catch (Exception *e) {
                throw new Error("Failed To Decrypt");
        }
 }
@@ -278,10 +275,6 @@ Array<char> *CloudComm::stripIVAndDecryptSlot(Array<char> *rawData) {
  * numbers.
  */
 Array<Slot *> *CloudComm::putSlot(Slot *slot, int max) {
-       URL url = NULL;
-       URLConnection con = NULL;
-       HttpURLConnection http = NULL;
-
        try {
                if (salt == NULL) {
                        if (!getSalt()) {
@@ -290,88 +283,73 @@ Array<Slot *> *CloudComm::putSlot(Slot *slot, int max) {
                        initCrypt();
                }
 
-               int64_t sequencenumber = slot.getSequenceNumber();
-               char[] slotBytes = slot.encode(mac);
-               // slotBytes = encryptCipher.doFinal(slotBytes);
-
-               // char[] iVBytes = slot.getSlotCryptIV();
-
-               // char[] chars = new char[slotBytes.length + IV_SIZE];
-               // System.arraycopy(iVBytes, 0, chars, 0, iVBytes.length);
-               // System.arraycopy(slotBytes, 0, chars, IV_SIZE, slotBytes.length);
+               int64_t sequencenumber = slot->getSequenceNumber();
+               Array<char> *slotBytes = slot->encode(mac);
 
+               Array<char> *chars = encryptSlotAndPrependIV(slotBytes, slot->getSlotCryptIV());
 
-               char[] chars = encryptSlotAndPrependIV(slotBytes, slot.getSlotCryptIV());
+               URL *url = buildRequest(true, sequencenumber, max);
 
-               url = buildRequest(true, sequencenumber, max);
+               timer->startTime();
+               URLConnection *con = url->openConnection();
+               HttpURLConnection *http = (HttpURLConnection *) con;
 
-               timer.startTime();
-               con = url.openConnection();
-               http = (HttpURLConnection) con;
-
-               http.setRequestMethod("POST");
-               http.setFixedLengthStreamingMode(chars.length);
-               http.setDoOutput(true);
-               http.setConnectTimeout(TIMEOUT_MILLIS);
-               http.setReadTimeout(TIMEOUT_MILLIS);
-               http.connect();
+               http->setRequestMethod("POST");
+               http->setFixedLengthStreamingMode(chars->length);
+               http->setDoOutput(true);
+               http->setConnectTimeout(CloudComm_TIMEOUT_MILLIS);
+               http->setReadTimeout(CloudComm_TIMEOUT_MILLIS);
+               http->connect();
 
-               OutputStream os = http.getOutputStream();
-               os.write(chars);
-               os.flush();
+               OutputStream *os = http->getOutputStream();
+               os->write(chars);
+               os->flush();
 
-               timer.endTime();
+               timer->endTime();
 
 
-               // System.out.println("Bytes Sent: " + chars.length);
-       } catch (ServerException e) {
-               timer.endTime();
+       } catch (ServerException *e) {
+               timer->endTime();
 
                throw e;
-       } catch (SocketTimeoutException e) {
-               timer.endTime();
+       } catch (SocketTimeoutException *e) {
+               timer->endTime();
 
                throw new ServerException("putSlot failed", ServerException.TypeConnectTimeout);
-       } catch (Exception e) {
-               // e.printStackTrace();
+       } catch (Exception *e) {
                throw new Error("putSlot failed");
        }
 
 
 
        try {
-               timer.startTime();
-               InputStream is = http.getInputStream();
-               DataInputStream dis = new DataInputStream(is);
-               char[] resptype = new char[7];
-               dis.readFully(resptype);
-               timer.endTime();
-
-               if (Arrays.equals(resptype, "getslot".getBytes())) {
+               timer->startTime();
+               InputStream is = http->getInputStream();
+               DataInputStream *dis = new DataInputStream(is);
+               Array<char> *resptype = new Array<char>(7);
+               dis->readFully(resptype);
+               timer->endTime();
+
+               if (Arrays->equals(resptype, "getslot"->getBytes())) {
                        return processSlots(dis);
-               } else if (Arrays.equals(resptype, "putslot".getBytes())) {
+               } else if (Arrays->equals(resptype, "putslot"->getBytes())) {
                        return NULL;
                } else
                        throw new Error("Bad response to putslot");
 
-       } catch (SocketTimeoutException e) {
-               timer.endTime();
-               throw new ServerException("putSlot failed", ServerException.TypeInputTimeout);
-       } catch (Exception e) {
-               // e.printStackTrace();
+       } catch (SocketTimeoutException *e) {
+               timer->endTime();
+               throw new ServerException("putSlot failed", ServerException->TypeInputTimeout);
+       } catch (Exception *e) {
                throw new Error("putSlot failed");
        }
 }
 
 /**
  * Request the server to send all slots with the given
- * sequencenumber or newer.
+ * sequencenumber or newer->
  */
 Array<Slot *> *CloudComm::getSlots(int64_t sequencenumber) {
-       URL url = NULL;
-       URLConnection con = NULL;
-       HttpURLConnection http = NULL;
-
        try {
                if (salt == NULL) {
                        if (!getSalt()) {
@@ -380,52 +358,50 @@ Array<Slot *> *CloudComm::getSlots(int64_t sequencenumber) {
                        initCrypt();
                }
 
-               url = buildRequest(false, sequencenumber, 0);
-               timer.startTime();
-               con = url.openConnection();
-               http = (HttpURLConnection) con;
-               http.setRequestMethod("POST");
-               http.setConnectTimeout(TIMEOUT_MILLIS);
-               http.setReadTimeout(TIMEOUT_MILLIS);
+               URL *url = buildRequest(false, sequencenumber, 0);
+               timer->startTime();
+               URLConnection *con = url->openConnection();
+               HttpURLConnection *http = (HttpURLConnection) con;
+               http->setRequestMethod("POST");
+               http->setConnectTimeout(CloudComm_TIMEOUT_MILLIS);
+               http->setReadTimeout(CloudComm_TIMEOUT_MILLIS);
 
 
 
-               http.connect();
-               timer.endTime();
+               http->connect();
+               timer->endTime();
 
-       } catch (SocketTimeoutException e) {
-               timer.endTime();
+       } catch (SocketTimeoutException *e) {
+               timer->endTime();
 
                throw new ServerException("getSlots failed", ServerException.TypeConnectTimeout);
-       } catch (ServerException e) {
-               timer.endTime();
+       } catch (ServerException *e) {
+               timer->endTime();
 
                throw e;
-       } catch (Exception e) {
-               // e.printStackTrace();
+       } catch (Exception *e) {
                throw new Error("getSlots failed");
        }
 
        try {
 
-               timer.startTime();
-               InputStream is = http.getInputStream();
-               DataInputStream dis = new DataInputStream(is);
-               char[] resptype = new char[7];
+               timer->startTime();
+               InputStream *is = http->getInputStream();
+               DataInputStream *dis = new DataInputStream(is);
+               Array<char> *resptype = new Array<char>(7);
 
-               dis.readFully(resptype);
-               timer.endTime();
+               dis->readFully(resptype);
+               timer->endTime();
 
-               if (!Arrays.equals(resptype, "getslot".getBytes()))
+               if (!resptype->equals("getslot".getBytes()))
                        throw new Error("Bad Response: " + new String(resptype));
 
                return processSlots(dis);
-       } catch (SocketTimeoutException e) {
-               timer.endTime();
+       } catch (SocketTimeoutException *e) {
+               timer->endTime();
 
                throw new ServerException("getSlots failed", ServerException.TypeInputTimeout);
-       } catch (Exception e) {
-               // e.printStackTrace();
+       } catch (Exception *e) {
                throw new Error("getSlots failed");
        }
 }
@@ -434,181 +410,156 @@ Array<Slot *> *CloudComm::getSlots(int64_t sequencenumber) {
  * Method that actually handles building Slot objects from the
  * server response.  Shared by both putSlot and getSlots.
  */
-Array<Slot *> *CloudComm::processSlots(DataInputStream dis) {
-       int numberofslots = dis.readInt();
-       int[] sizesofslots = new int[numberofslots];
+Array<Slot *> *CloudComm::processSlots(DataInputStream *dis) {
+       int numberofslots = dis->readInt();
+       Array<int> *sizesofslots = new Array<int>(numberofslots);
 
-       Slot[] slots = new Slot[numberofslots];
+       Array<Slot *> *slots = new Array<Slot *>(numberofslots);
        for (int i = 0; i < numberofslots; i++)
-               sizesofslots[i] = dis.readInt();
+               sizesofslots->set(i, dis->readInt());
 
        for (int i = 0; i < numberofslots; i++) {
+               Array<char> *rawData = new Array<char>(sizesofslots->get(i));
+               dis->readFully(rawData);
 
-               char[] rawData = new char[sizesofslots[i]];
-               dis.readFully(rawData);
-
-
-               // char[] data = new char[rawData.length - IV_SIZE];
-               // System.arraycopy(rawData, IV_SIZE, data, 0, data.length);
-
-
-               char[] data = stripIVAndDecryptSlot(rawData);
-
-               // data = decryptCipher.doFinal(data);
-
-               slots[i] = Slot.decode(table, data, mac);
+               Array<char> *data = stripIVAndDecryptSlot(rawData);
+               slots->set(i, Slot_decode(table, data, mac));
        }
-       dis.close();
+       dis->close();
        return slots;
 }
 
 Array<char> *sendLocalData(Array<char> *sendData, int64_t localSequenceNumber, String host, int port) {
-
        if (salt == NULL) {
                return NULL;
        }
        try {
-               System.out.println("Passing Locally");
+               printf("Passing Locally\n");
 
-               mac.update(sendData);
-               char[] genmac = mac.doFinal();
-               char[] totalData = new char[sendData.length + genmac.length];
-               System.arraycopy(sendData, 0, totalData, 0, sendData.length);
-               System.arraycopy(genmac, 0, totalData, sendData.length, genmac.length);
+               mac->update(sendData);
+               Array<char> *genmac = mac->doFinal();
+               Array<char> *totalData = new Array<char>(sendData->length() + genmac->length());
+               System_arraycopy(sendData, 0, totalData, 0, sendData.length());
+               System - arraycopy(genmac, 0, totalData, sendData.length, genmac->length());
 
                // Encrypt the data for sending
-               // char[] encryptedData = encryptCipher.doFinal(totalData);
-               // char[] encryptedData = encryptCipher.doFinal(totalData);
-               char[] iv = createIV(table.getMachineId(), table.getLocalSequenceNumber());
-               char[] encryptedData = encryptSlotAndPrependIV(totalData, iv);
+               Array<char> *iv = createIV(table->getMachineId(), table->getLocalSequenceNumber());
+               Array<char> *encryptedData = encryptSlotAndPrependIV(totalData, iv);
 
                // Open a TCP socket connection to a local device
-               Socket socket = new Socket(host, port);
-               socket.setReuseAddress(true);
-               DataOutputStream output = new DataOutputStream(socket.getOutputStream());
-               DataInputStream input = new DataInputStream(socket.getInputStream());
-
+               Socket *socket = new Socket(host, port);
+               socket->setReuseAddress(true);
+               DataOutputStream *output = new DataOutputStream(socket->getOutputStream());
+               DataInputStream *input = new DataInputStream(socket->getInputStream());
 
-               timer.startTime();
+               timer->startTime();
                // Send data to output (length of data, the data)
-               output.writeInt(encryptedData.length);
-               output.write(encryptedData, 0, encryptedData.length);
-               output.flush();
+               output->writeInt(encryptedData->length);
+               output->write(encryptedData, 0, encryptedData->length);
+               output->flush();
 
-               int lengthOfReturnData = input.readInt();
-               char[] returnData = new char[lengthOfReturnData];
-               input.readFully(returnData);
+               int lengthOfReturnData = input->readInt();
+               Array<char> *returnData = new Array<char>(lengthOfReturnData);
+               input->readFully(returnData);
 
-               timer.endTime();
+               timer->endTime();
 
-               // returnData = decryptCipher.doFinal(returnData);
                returnData = stripIVAndDecryptSlot(returnData);
-               // returnData = decryptCipher.doFinal(returnData);
 
                // We are done with this socket
-               socket.close();
+               socket->close();
 
-               mac.update(returnData, 0, returnData.length - HMAC_SIZE);
-               char[] realmac = mac.doFinal();
-               char[] recmac = new char[HMAC_SIZE];
-               System.arraycopy(returnData, returnData.length - realmac.length, recmac, 0, realmac.length);
+               mac->update(returnData, 0, returnData->length - HMAC_SIZE);
+               Array<char> *realmac = mac->doFinal();
+               Array<char> *recmac = new Array<char>(HMAC_SIZE);
+               System_arraycopy(returnData, returnData->length - realmac->length, recmac, 0, realmac->length);
 
-               if (!Arrays.equals(recmac, realmac))
+               if (!Arrays->equals(recmac, realmac))
                        throw new Error("Local Error: Invalid HMAC!  Potential Attack!");
 
-               char[] returnData2 = new char[lengthOfReturnData - recmac.length];
-               System.arraycopy(returnData, 0, returnData2, 0, returnData2.length);
+               Array<char> *returnData2 = new Array<char>(lengthOfReturnData - recmac->length());
+               System_arraycopy(returnData, 0, returnData2, 0, returnData2->length);
 
                return returnData2;
-       } catch (Exception e) {
-               e.printStackTrace();
-               // throw new Error("Local comms failure...");
-
+       } catch (Exception *e) {
+               printf("Exception\n");
        }
 
        return NULL;
 }
 
 void CloudComm::localServerWorkerFunction() {
-
-       ServerSocket inputSocket = NULL;
+       ServerSocket *inputSocket = NULL;
 
        try {
                // Local server socket
                inputSocket = new ServerSocket(listeningPort);
-               inputSocket.setReuseAddress(true);
-               inputSocket.setSoTimeout(TIMEOUT_MILLIS);
-       } catch (Exception e) {
-               e.printStackTrace();
+               inputSocket->setReuseAddress(true);
+               inputSocket->setSoTimeout(CloudComm_TIMEOUT_MILLIS);
+       } catch (Exception *e) {
                throw new Error("Local server setup failure...");
        }
 
        while (!doEnd) {
-
                try {
                        // Accept incoming socket
-                       Socket socket = inputSocket.accept();
+                       Socket *socket = inputSocket->accept();
 
-                       DataInputStream input = new DataInputStream(socket.getInputStream());
-                       DataOutputStream output = new DataOutputStream(socket.getOutputStream());
+                       DataInputStream *input = new DataInputStream(socket->getInputStream());
+                       DataOutputStream *output = new DataOutputStream(socket->getOutputStream());
 
                        // Get the encrypted data from the server
-                       int dataSize = input.readInt();
-                       char[] readData = new char[dataSize];
-                       input.readFully(readData);
+                       int dataSize = input->readInt();
+                       Array<char> *readData = new Array<char>(dataSize);
+                       input->readFully(readData);
 
-                       timer.endTime();
+                       timer->endTime();
 
                        // Decrypt the data
-                       // readData = decryptCipher.doFinal(readData);
                        readData = stripIVAndDecryptSlot(readData);
 
-                       mac.update(readData, 0, readData.length - HMAC_SIZE);
-                       char[] genmac = mac.doFinal();
-                       char[] recmac = new char[HMAC_SIZE];
-                       System.arraycopy(readData, readData.length - recmac.length, recmac, 0, recmac.length);
+                       mac->update(readData, 0, readData->length - HMAC_SIZE);
+                       Array<char> *genmac = mac->doFinal();
+                       Array<char> *recmac = new Array<char>(HMAC_SIZE);
+                       System_arraycopy(readData, readData->length() - recmac->length(), recmac, 0, recmac->length());
 
-                       if (!Arrays.equals(recmac, genmac))
+                       if (!recmac->equals(genmac))
                                throw new Error("Local Error: Invalid HMAC!  Potential Attack!");
 
-                       char[] returnData = new char[readData.length - recmac.length];
-                       System.arraycopy(readData, 0, returnData, 0, returnData.length);
+                       Array<char> *returnData = new Array<char>(readData->length() - recmac->length());
+                       System_arraycopy(readData, 0, returnData, 0, returnData->length());
 
                        // Process the data
-                       // char[] sendData = table.acceptDataFromLocal(readData);
-                       char[] sendData = table.acceptDataFromLocal(returnData);
+                       Array<char> *sendData = table->acceptDataFromLocal(returnData);
 
 
-                       mac.update(sendData);
-                       char[] realmac = mac.doFinal();
-                       char[] totalData = new char[sendData.length + realmac.length];
-                       System.arraycopy(sendData, 0, totalData, 0, sendData.length);
-                       System.arraycopy(realmac, 0, totalData, sendData.length, realmac.length);
+                       mac->update(sendData);
+                       Array<char> *realmac = mac->doFinal();
+                       Array<char> *totalData = new Array<char>(sendData->length() + realmac->length());
+                       System_arraycopy(sendData, 0, totalData, 0, sendData->length());
+                       System_arraycopy(realmac, 0, totalData, sendData->length(), realmac->length());
 
                        // Encrypt the data for sending
-                       // char[] encryptedData = encryptCipher.doFinal(totalData);
-                       char[] iv = createIV(table.getMachineId(), table.getLocalSequenceNumber());
-                       char[] encryptedData = encryptSlotAndPrependIV(totalData, iv);
+                       Array<char> *iv = createIV(table->getMachineId(), table->getLocalSequenceNumber());
+                       Array<char> *encryptedData = encryptSlotAndPrependIV(totalData, iv);
 
 
-                       timer.startTime();
+                       timer->startTime();
                        // Send data to output (length of data, the data)
-                       output.writeInt(encryptedData.length);
-                       output.write(encryptedData, 0, encryptedData.length);
-                       output.flush();
+                       output->writeInt(encryptedData->length());
+                       output->write(encryptedData, 0, encryptedData->length());
+                       output->flush();
 
                        // close the socket
-                       socket.close();
-               } catch (Exception e) {
-
+                       socket->close();
+               } catch (Exception *e) {
                }
        }
 
        if (inputSocket != NULL) {
                try {
-                       inputSocket.close();
-               } catch (Exception e) {
-                       e.printStackTrace();
+                       inputSocket->close();
+               } catch (Exception *e) {
                        throw new Error("Local server close failure...");
                }
        }
@@ -619,13 +570,10 @@ void CloudComm::close() {
 
        if (localServerThread != NULL) {
                try {
-                       localServerThread.join();
-               } catch (Exception e) {
-                       e.printStackTrace();
+                       localServerThread->join();
+               } catch (Exception *e) {
                        throw new Error("Local Server thread join issue...");
                }
        }
-
-       // System.out.println("Done Closing Cloud Comm");
 }