Distributed/Peer.cpp at master · osamahammad21/Distributed · GitHub

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#include "Peer.h"

inline bool existf(string name) {

ifstream f(name.c_str());

if(f.good())

{

f.close();

return true;

}

// f.close();

return false;

}

//Peer constructor

Peer :: Peer(int port){

//create client socket

sock.initializeSocket(port);

read_thread = new std::thread(&Peer::listen,this);

serve_thread = new std::thread(&Peer::serve,this);

if(existf(string(IMAGES_DB_PATH)))

{

ifstream imagesFile;

imagesFile.open(IMAGES_DB_PATH);

while(!imagesFile.eof())

{

string input;

imagesFile>>input;

myImages.push_back(input);

}

imagesFile.close();

}else

{

ofstream imagesFile;

imagesFile.open(IMAGES_DB_PATH);

imagesFile.close();

}

void Peer::startStatusUpdates(string token)

{

status_thread = new std::thread(&Peer::status,this,token);

statusUpdatesRunning = true;

}

void Peer::setDS(string ip,int port)

{

dsaddr=ip;

dsport=port;

}

void Peer::addImageLocally(string imageId)

{

for(int i = 0;i<myImages.size();i++)

{

if(myImages[i] == imageId){

return;

}

myImages.push_back(imageId);

ofstream imagesFile;

imagesFile.open(IMAGES_DB_PATH, ios::out | ios::trunc);

for(int i = 0;i<myImages.size();i++)

{

if(i==myImages.size()-1)

{

imagesFile<<myImages[i];

}else

{

imagesFile<<myImages[i]<<endl;

}

imagesFile.close();

}

void Peer::removeImageLocally(string imageId)

{

for(vector<string>::iterator it = myImages.begin();it!=myImages.end();it++)

{

if(*it == imageId){

myImages.erase(it);

break;

}

ofstream imagesFile;

imagesFile.open(IMAGES_DB_PATH, ios::out | ios::trunc);

for(int i = 0;i<myImages.size();i++)

{

if(i==myImages.size()-1)

{

imagesFile<<myImages[i];

}else

{

imagesFile<<myImages[i]<<endl;

}

imagesFile.close();

}

void Peer::setTimeOut(int seconds)

{

timeOutIsSet=true;

timeOutSeconds=seconds;

}

void Peer::removeTimeOut()

{

timeOutIsSet=false;

}

//Before Auth

string Peer::login(string username,string password)

{

rpcidmtx.lock();

int rpcId = rpccount++;

rpcidmtx.unlock();

Message *message = new Message();

message->setSourceIP(sock.getMyIP());

message->setSourcePort(sock.getMyPort());

message->setRPCID(rpcId);

message->setDestinationIP(dsaddr);

message->setDestinationPort(dsport);

message->setOperation(Operation::login);

string request=username+DELIM+password;

int n = request.length();

char *char_array=new char[n+1];

strcpy(char_array, request.c_str());

message->setMessage(char_array,n);

message->setMessageType(MessageType::Request);

while(!sock.sendMessage(message)){}

long long ticks=0;

while(true)

{

if(replyMessages.find(rpcId)!=replyMessages.end())

{

if(replyMessages[rpcId]->getMessageType()==MessageType::Reply)

{

string s(replyMessages[rpcId]->getMessage());

return s;

}

if( timeOutIsSet && (ticks++ / 10 >= timeOutSeconds) )

return CONN_TIMEOUT;

usleep(100000);//sleep for 100 Milliseconds

}

string Peer::logout(string token)

{

rpcidmtx.lock();

int rpcId = rpccount++;

rpcidmtx.unlock();

Message *message = new Message();

message->setSourceIP(sock.getMyIP());

message->setSourcePort(sock.getMyPort());

message->setRPCID(rpcId);

message->setDestinationIP(dsaddr);

message->setDestinationPort(dsport);

message->setOperation(Operation::logout);

string request=token;

int n = request.length();

char *char_array=new char[n+1];

strcpy(char_array, request.c_str());

message->setMessage(char_array,n);

message->setMessageType(MessageType::Request);

while(!sock.sendMessage(message)){}

long long ticks=0;

while(true)

{

if(replyMessages.find(rpcId)!=replyMessages.end())

{

if(replyMessages[rpcId]->getMessageType()==MessageType::Reply)

{

string s(replyMessages[rpcId]->getMessage());

return s;

}

if( timeOutIsSet && (ticks++ / 10 >= timeOutSeconds) )

return CONN_TIMEOUT;

usleep(100000);//sleep for 100 Milliseconds

}

string Peer::signup(string username,string password)

{

rpcidmtx.lock();

int rpcId = rpccount++;

rpcidmtx.unlock();

Message *message = new Message();

message->setSourceIP(sock.getMyIP());

message->setSourcePort(sock.getMyPort());

message->setRPCID(rpcId);

message->setDestinationIP(dsaddr);

message->setDestinationPort(dsport);

message->setOperation(Operation::signup);

string request=username+DELIM+password;

int n = request.length();

char *char_array=new char[n+1];

strcpy(char_array, request.c_str());

message->setMessage(char_array,n);

message->setMessageType(MessageType::Request);

while(!sock.sendMessage(message)){}

cout<<"Sent Message to "<<dsaddr<<" "<<dsport<<endl;

long long ticks=0;

while(true)

{

if(replyMessages.find(rpcId)!=replyMessages.end())

{

if(replyMessages[rpcId]->getMessageType()==MessageType::Reply)

{

string s(replyMessages[rpcId]->getMessage());

return s;

}

if( timeOutIsSet && (ticks++ / 10 >= timeOutSeconds) )

return CONN_TIMEOUT;

usleep(100000);//sleep for 100 Milliseconds

}

//After Auth: Use token

string Peer::uploadImage(string token,string imagename,string image64)

{

rpcidmtx.lock();

int rpcId = rpccount++;

rpcidmtx.unlock();

Message *message = new Message();

message->setSourceIP(sock.getMyIP());

message->setSourcePort(sock.getMyPort());

message->setRPCID(rpcId);

message->setDestinationIP(dsaddr);

message->setDestinationPort(dsport);

message->setOperation(Operation::uploadImage);

string request=token+DELIM+imagename+DELIM+image64;

int n = request.length();

char *char_array=new char[n+1];

strcpy(char_array, request.c_str());

message->setMessage(char_array,n);

message->setMessageType(MessageType::Request);

while(!sock.sendMessage(message)){}

long long ticks = 0;

while(true)

{

if(replyMessages.find(rpcId)!=replyMessages.end())

{

if(replyMessages[rpcId]->getMessageType()==MessageType::Reply)

{

string s(replyMessages[rpcId]->getMessage());

return s;

}

if( timeOutIsSet && (ticks++ / 10 >= timeOutSeconds) )

return CONN_TIMEOUT;

usleep(100000);//sleep for 100 Milliseconds

}

string Peer::removeImage(string token,string imagename)

{

rpcidmtx.lock();

int rpcId = rpccount++;

rpcidmtx.unlock();

Message *message = new Message();

message->setSourceIP(sock.getMyIP());

message->setSourcePort(sock.getMyPort());

message->setRPCID(rpcId);

message->setDestinationIP(dsaddr);

message->setDestinationPort(dsport);

message->setOperation(Operation::removeImage);

string request=token+DELIM+imagename;

int n = request.length();

char *char_array=new char[n+1];

strcpy(char_array, request.c_str());

message->setMessage(char_array,n);

message->setMessageType(MessageType::Request);

while(!sock.sendMessage(message)){}

long long ticks=0;

while(true)

{

if(replyMessages.find(rpcId)!=replyMessages.end())

{

if(replyMessages[rpcId]->getMessageType()==MessageType::Reply)

{

string s(replyMessages[rpcId]->getMessage());

return s;

}

if( timeOutIsSet && (ticks++ / 10 >= timeOutSeconds) )

return CONN_TIMEOUT;

usleep(100000);//sleep for 100 Milliseconds

}

//care that each image is encoded64 twice on the Peer level so you need to decode it twice to use it

string Peer::getAllImagesFromDS(string token)

{

rpcidmtx.lock();

int rpcId = rpccount++;

rpcidmtx.unlock();

Message *message = new Message();

message->setSourceIP(sock.getMyIP());

message->setSourcePort(sock.getMyPort());

message->setRPCID(rpcId);

message->setDestinationIP(dsaddr);

message->setDestinationPort(dsport);

message->setOperation(Operation::getAllImages);

string request = token;

int n = request.length();

char *char_array=new char[n+1];

strcpy(char_array, request.c_str());

message->setMessage(char_array,n);

message->setMessageType(MessageType::Request);

while(!sock.sendMessage(message)){}

long long ticks=0;

while(true)

{

if(replyMessages.find(rpcId)!=replyMessages.end())

{

if(replyMessages[rpcId]->getMessageType()==MessageType::Reply)

{

string s(replyMessages[rpcId]->getMessage());

return s;

}

//care that each image is encoded64 twice on the Peer level so you need to decode it twice to use it

string Peer::getAllImagesFromPeer(string myusername,string targetusername,string ip,int port)

{

rpcidmtx.lock();

int rpcId = rpccount++;

rpcidmtx.unlock();

Message *message = new Message();

message->setSourceIP(sock.getMyIP());

message->setSourcePort(sock.getMyPort());

message->setRPCID(rpcId);

message->setDestinationIP(ip);

message->setDestinationPort(port);

message->setOperation(Operation::getThumbnails);

string request = myusername+DELIM+targetusername;

int n = request.length();

char *char_array=new char[n+1];

strcpy(char_array, request.c_str());

message->setMessage(char_array,n);

message->setMessageType(MessageType::Request);

while(!sock.sendMessage(message)){}

cout<<"Message Sent"<<endl;

long long ticks = 0;

while(true)

{

if(replyMessages.find(rpcId)!=replyMessages.end())

{

if(replyMessages[rpcId]->getMessageType()==MessageType::Reply)

{

string s(replyMessages[rpcId]->getMessage());

return s;

}

if( timeOutIsSet && (ticks++ / 10 >= timeOutSeconds) )

return CONN_TIMEOUT;

usleep(100000);//sleep for 100 Millisecondss

}

string Peer::getPortnIP(string token,string targetusername)

{

rpcidmtx.lock();

int rpcId = rpccount++;

rpcidmtx.unlock();

Message *message = new Message();

message->setSourceIP(sock.getMyIP());

message->setSourcePort(sock.getMyPort());

message->setRPCID(rpcId);

message->setDestinationIP(dsaddr);

message->setDestinationPort(dsport);

message->setOperation(Operation::getPortnIP);

string request = token+DELIM+targetusername;

int n = request.length();

char *char_array=new char[n+1];

strcpy(char_array, request.c_str());

message->setMessage(char_array,n);

message->setMessageType(MessageType::Request);

while(!sock.sendMessage(message)){}

long long ticks=0;

while(true)

{

if(replyMessages.find(rpcId)!=replyMessages.end())

{

if(replyMessages[rpcId]->getMessageType()==MessageType::Reply)

{

string s(replyMessages[rpcId]->getMessage());

return s;

}

if( timeOutIsSet && (ticks++ / 10 >= timeOutSeconds) )

return CONN_TIMEOUT;

usleep(100000);//sleep for 100 Milliseconds

}

inline void split(string str, vector<string>& cont, char delim = ' ')

{

stringstream ss(str);

string token;

while (getline(ss, token, delim)) {

cont.push_back(token);

}

string Peer::getImage(string myusername,string ownerusername,string targetadd,unsigned int targetport,string imagename)

{

rpcidmtx.lock();

int rpcId = rpccount++;

rpcidmtx.unlock();

Message *message = new Message();

message->setSourceIP(sock.getMyIP());

message->setSourcePort(sock.getMyPort());

message->setRPCID(rpcId);

message->setDestinationIP(targetadd);

message->setDestinationPort(targetport);

message->setOperation(Operation::getImage);

string request = myusername+DELIM+ownerusername+DELIM+imagename;

int n = request.length();

char *char_array=new char[n+1];

strcpy(char_array, request.c_str());

message->setMessage(char_array,n);

message->setMessageType(MessageType::Request);

while(!sock.sendMessage(message)){}

long long ticks=0;

while(true)

{

if(replyMessages.find(rpcId)!=replyMessages.end())

{

if(replyMessages[rpcId]->getMessageType()==MessageType::Reply)

{

string s(replyMessages[rpcId]->getMessage());

return base64_decode(s);

}

if( timeOutIsSet && (ticks++ / 10 >= timeOutSeconds) )

return CONN_TIMEOUT;

usleep(100000);//sleep for 100 Milliseconds

}

//working as a server

void Peer::serve()

{

Message *message;

while(!dest)

{

if(!serveMessages.empty())

{

cout<<serveMessages.size()<<endl;

for(int i =0;i<serveMessages.size();i++)

{

if(serveMessages[i]->getOperation()==Operation::getImage){

cout<<"Full Image"<<endl;

vector<string> fields;

split(serveMessages[i]->getMessage(),fields,',');

if(fields.size()<2)

continue;

Image img;

bool found = false;

for(int i =0;i<myImages.size();i++)

{

if(myImages[i]==fields[2])

{

found=true;

break;

}

if(!found||!(img.findImage(fields[1],fields[2])))

continue;

string request =img.extractImage();

request = base64_encode(reinterpret_cast<const unsigned char*>(reinterpret_cast<const unsigned char*> (request.c_str())), request.size() + 1);

img.removeMiddleFiles();

message = new Message();

message->setSourceIP(sock.getMyIP());

message->setSourcePort(sock.getMyPort());

message->setRPCID(serveMessages[i]->getRPCId());

message->setDestinationIP(serveMessages[i]->getSourceIP());

message->setDestinationPort(serveMessages[i]->getSourcePort());

message->setOperation(Operation::getImage);

message->setMessageType(MessageType::Reply);

int n = request.length();

char *char_array=new char[n+1];

strcpy(char_array, request.c_str());

message->setMessage(char_array,n);

while(!sock.sendMessage(message)){}

}else if(serveMessages[i]->getOperation()==Operation::getThumbnails)

{

cout<<"Thumbnails"<<endl;

vector<string> fields;

split(serveMessages[i]->getMessage(),fields,',');

if(fields.size()<2)

continue;

Image img;

string images="";

bool first=true;

for(int i =0;i<myImages.size();i++)

{

Image img;

if(img.findImage(fields[1],myImages[i])){

img.desteg();

if(!first)

images+=DELIM;

else

first=false;

images += img.getSmallScaleImage();

}

img.removeMiddleFiles();

}

message = new Message();

if(images=="")

images="no photos";

message->setSourceIP(sock.getMyIP());

message->setSourcePort(sock.getMyPort());

message->setRPCID(serveMessages[i]->getRPCId());

message->setDestinationIP(serveMessages[i]->getSourceIP());

message->setDestinationPort(serveMessages[i]->getSourcePort());

message->setOperation(Operation::getThumbnails);

message->setMessageType(MessageType::Reply);

int n = images.length();

char *char_array=new char[n+1];

strcpy(char_array, images.c_str());

message->setMessage(char_array,n);

while(!sock.sendMessage(message)){}

}

vectorMtx.lock();

serveMessages.clear();

vectorMtx.unlock();

}

usleep(100);

}

string Peer::getImageUpdates()

{

string reply;

while(!dest)

{

vector<Message*>::iterator it;

for(it = serveMessages.begin();it!=serveMessages.end();it++)

{

if((*it)->getMessageType()==MessageType::Request &&

(*it)->getOperation()==Operation::requestImageAccess)

{

vectorMtx.lock();

reply = string((*it)->getMessage());

serveMessages.erase(it);

vectorMtx.unlock();

return reply;

}

return CONN_TIMEOUT;

}

//listening to socket

void Peer::listen()

{

while(!dest){

if(sock.ReceiveBuffer.empty())

continue;

Message *reply=sock.receiveMsg();

if(dest)

break;

if(reply->getMessageType()==MessageType::Reply){

if(replyMessages.find(reply->getRPCId())==replyMessages.end())

{

replyMessages.insert({reply->getRPCId(),reply});

}

}else if(reply->getMessageType()==MessageType::Request)

{

vectorMtx.lock();

serveMessages.push_back(reply);

vectorMtx.unlock();

}

void Peer::status(string input)

{

string token = input;

while (!dest)

{

rpcidmtx.lock();

int rpcId = rpccount++;

rpcidmtx.unlock();

Message *message = new Message();

message->setSourceIP(sock.getMyIP());

message->setSourcePort(sock.getMyPort());

message->setRPCID(rpcId);

message->setDestinationIP(dsaddr);

message->setDestinationPort(dsport);

message->setOperation(Operation::updateStatus);

char *char_array=new char[token.length()+1];

strcpy(char_array, token.c_str());

message->setMessage(char_array,token.length());

message->setMessageType(MessageType::Request);

while(!sock.sendMessage(message)){}

sleep(STATUS_UPDATE_TIME);

//cout<<"update SENT"<<endl;

}

Peer :: ~Peer()

{

dest=true;

serve_thread->join();

read_thread->join();

if(statusUpdatesRunning)

status_thread->join();

}

Distributed/Peer.cpp at master · osamahammad21/Distributed · GitHub

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