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versionSendsListThenBusErr.cpp
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versionSendsListThenBusErr.cpp
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//UDPServer.c
/* login = works
logout = works
* gcc -o server UDPServer.c
* ./server
*/
#include <arpa/inet.h>
#include <netinet/in.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <netdb.h>
#include <iostream>
#include <string>
#include <map>
#include <set>
#include <utility>
#include <vector>
#include "duckchat.h"
//defined
#define BUFLEN 1024
using namespace std;
//globals
struct sockaddr recAddr;
socklen_t fromlen = sizeof(recAddr);
int sockfd;
struct addrinfo *addrAr;
map<string,string> usrTlkChan;
map<string,struct sockaddr_in> userToAddrStrct;
map<string,vector<string> > chanTlkUser;
vector<string> channels;
//methods
int connectToSocket(char*, char*);
int readRequestType(struct request*, int);
int sayReq(struct request_say*);
int checkValidAddr();
string getUserOfCurrAddr();
int getAddr_Port();
struct sockaddr_in getAddrStruct();
int checkAddrEq(struct sockaddr_in, struct sockaddr_in);
string stringAddr(struct sockaddr_in);
//program
int main(int argc, char **argv)
{
addrAr = NULL;
sockfd = 0;
connectToSocket(argv[1], argv[2]);
fd_set sockfds;
struct timeval timeV;
while(1)
{
//for multiple requests maybe
// requests = (struct request*) malloc(sizeof (struct request) + BUFLEN);
timeV.tv_sec = 120;
timeV.tv_usec = 0;
FD_ZERO(&sockfds);
FD_SET(sockfd, &sockfds);
int ret;
ret = select(sockfd+1, &sockfds, NULL, NULL, &timeV);
cout << "\n";
char *buf = new char[BUFLEN];
struct request *requests = (struct request*)malloc(sizeof(struct request*) + BUFLEN);
int bal = 0;
bal = recvfrom(sockfd, buf, BUFLEN, 0, (struct sockaddr*)&recAddr, &fromlen);
if(bal > 0) {
printf("recv()'d %d bytes of data in buf\n", bal);
requests = (request*) buf;
cout << "do I get herer??? \n";
readRequestType(requests, bal);
}
cout << "printing user talk channel map:\n";
for(map<string,string>::iterator imu = usrTlkChan.begin(); imu != usrTlkChan.end(); imu++) {
cout << "User: " << imu->first << " talking on channel: " << imu->second << "\n";
}
cout << "printing user to addres map:\n";
cout << "user to addres map size is: " << userToAddrStrct.size() <<"\n";
for(map<string,struct sockaddr_in>::iterator isu = userToAddrStrct.begin(); isu != userToAddrStrct.end(); isu++) {
cout << "User: " << isu->first << " with address: " << stringAddr(isu->second) << " with port #: " << isu->second.sin_port <<"\n";
}
cout << "printing users on each channel: \n";
for(int ick=0; ick<channels.size(); ick++) {
cout << channels[ick] << " has users:\n";
map<string,vector<string> >::iterator itck = chanTlkUser.find(channels[ick]);
vector<string> usersC = itck->second;
for(int j=0; j<usersC.size(); j++) {
cout << " : "<< usersC[j] << " : ";
}
cout << "\n";
}
delete[] buf;
}
return 0;
}
//returns string of sockaddr_in
string stringAddr(struct sockaddr_in a)
{
char *addrA = (char*)malloc(sizeof(char)*BUFLEN);
inet_ntop(AF_INET, &(a.sin_addr), addrA, BUFLEN);
string retString = addrA;
return retString;
}
//returns string of username of current request address
string getUserOfCurrAddr()
{
struct sockaddr_in* address = (struct sockaddr_in*)&recAddr;
string aTmp = "";
map<string,struct sockaddr_in>::iterator i;
for(i=userToAddrStrct.begin(); i != userToAddrStrct.end(); i++) {
cout << "before checkEQ call\n";
if(checkAddrEq(i->second,*address) == 0) {
aTmp = i->first;
}
}
return aTmp;
}
int checkAddrEq(struct sockaddr_in a, struct sockaddr_in b)
{
char *addrA = (char*)malloc(sizeof(char)*BUFLEN);
char *addrB = (char*)malloc(sizeof(char)*BUFLEN);
inet_ntop(AF_INET, &(a.sin_addr), addrA, BUFLEN);
inet_ntop(AF_INET, &(b.sin_addr), addrB, BUFLEN);
string stringA = addrA;
string stringB = addrB;
if(stringA == stringB) {
int portA = a.sin_port;
int portB = b.sin_port;
if(portA == portB) {
return 0;
}
}
return -1;
}
struct sockaddr_in getAddrStruct()
{
struct sockaddr_in* address = (struct sockaddr_in*)&recAddr;
return *address;
}
//check if current request address is valid or exist in map
int checkValidAddr()
{
struct sockaddr_in* address = (struct sockaddr_in*)&recAddr;
map<string,struct sockaddr_in>::iterator i;
for(i=userToAddrStrct.begin(); i != userToAddrStrct.end(); i++) {
if(checkAddrEq(i->second,*address)==0) {
return 0;
}
}
return -1;
}
//handle say requests
int sayReq(struct request_say *rs)
{
string channel = rs->req_channel;
string message = rs->req_text;
string username = getUserOfCurrAddr();
cout << "Username fromuser: " << username << "\n";
map<string,vector<string> >::iterator hit = chanTlkUser.find(channel);
if(hit == chanTlkUser.end()) {
cout << "JESUS CHRIST: " << channel <<"\n";
return -1;
}
vector<string> tmpU = hit->second;
cout << tmpU.size() << " that maney USERSSS\n";
for(int i=0; i<tmpU.size(); i++) {
cout << "user: " << tmpU[i] << " on channel: " << channel << " in iteration on say loop: " << i <<"\n";
struct sockaddr_in address;
cout << "REALLY Beforer SEGG?? that maney USERSSS\n";
map<string, struct sockaddr_in>::iterator ui = userToAddrStrct.find(tmpU[i]);
cout << ui->first << " is user in tmp map __Beforer SEGG?? that maney USERSSS\n";
address = ui->second;
cout << "AFTER SEGG?? that maney USERSSS\n";
struct text_say *msg = (struct text_say*) malloc(sizeof(struct text_say) + BUFLEN);
msg->txt_type= htonl(TXT_SAY);
char *AAA = (char*)malloc(sizeof(char)*BUFLEN);
inet_ntop(AF_INET, &(address.sin_addr), AAA, BUFLEN);
string printString = AAA;
cout << printString << " that is address\n";
strncpy(msg->txt_username, username.c_str(), USERNAME_MAX);
strncpy(msg->txt_text, message.c_str(), SAY_MAX);
strncpy(msg->txt_channel, channel.c_str(), CHANNEL_MAX);
int size = sizeof(struct sockaddr*);
int res= sendto(sockfd, msg, sizeof(struct text_say), 0, (struct sockaddr*)&address, size);
if (res == -1) {
cout << "sendto very badd \n";
//return -1;
}
free(msg);
}
tmpU.clear();
return 0;
}
//handle login requests
int loginReq(struct request_login *rl)
{
string username = rl->req_username;
struct sockaddr_in strctAddr = getAddrStruct();
userToAddrStrct[username] = strctAddr;
map<string,vector<string> >::iterator it = chanTlkUser.find("Common");
vector<string> usersC;
if(it == chanTlkUser.end()) {
chanTlkUser.insert(pair<string,vector<string> >("Common", usersC));
channels.push_back("Common");
}
it = chanTlkUser.find("Common");
usersC = it->second;
usersC.insert(usersC.begin(), username);
chanTlkUser["Common"] = usersC;
usrTlkChan.insert(pair<string,string>(username, "Common"));
return 0;
}
//handle login requests
int logoutReq(struct request_logout *rl)
{
string username = getUserOfCurrAddr();
map<string, struct sockaddr_in>::iterator sockIt = userToAddrStrct.find(username);
userToAddrStrct.erase(sockIt);
map<string,string>::iterator git;
git = usrTlkChan.find(username);
if(git != usrTlkChan.end()) {
cout << "deleting 5 \n";
usrTlkChan.erase(username);
}
//erase user on channels in chanTlkUser
for(int ick=0; ick<channels.size(); ick++) {
cout << "in outerr \n";
map<string,vector<string> >::iterator itck = chanTlkUser.find(channels[ick]);
vector<string> usersC = itck->second;
for(int j=0; j<usersC.size(); j++) {
if(usersC[j] == username) {
cout << "deleting user: " << usersC[j] << " \n";
usersC.erase(usersC.begin()+j);
}
}
chanTlkUser.erase(itck);
chanTlkUser.insert(pair<string,vector<string> >(channels[ick],usersC));
}
return 0;
}
//handle login requests
int joinReq(struct request_join *rj)
{
//create tmp vars for username and channel of request
string chan = (string)rj->req_channel;
string user = getUserOfCurrAddr();
cout << "USER IN JOIN METHOD: " << user << "\n";
int trig = 0;
map<string,vector<string> >::iterator it = chanTlkUser.find(chan);
vector<string> usersC;
if(it == chanTlkUser.end()) {
//NEW CHANNEL
usersC.insert(usersC.begin(), user);
chanTlkUser.insert(pair<string,vector<string> >(chan, usersC));
channels.push_back(chan);
} else {
//old channel
it = chanTlkUser.find(chan);
usersC = it->second;
for(int i=0; i<usersC.size(); i++) {
if(usersC[i] == user) {
return -1;
}
}
usersC.insert(usersC.begin(), user);
chanTlkUser[chan] = usersC;
}
string chanTlk = usrTlkChan[user];
chanTlk = chan;
usrTlkChan[user] = chanTlk;
return 0;
}
//handle login requests
int leaveReq(struct request_leave *rl)
{
return 0;
}
//handle login requests
int listReq(struct request_list *rl)
{
string username = getUserOfCurrAddr();
struct sockaddr_in address = userToAddrStrct[username];
int numCHAN = channels.size();
struct text_list *msg;
struct channel_info minfo[numCHAN];
msg->txt_type= TXT_LIST;
msg->txt_nchannels = numCHAN;
for (int i = 0; i<channels.size(); i++) {
const char* tstr = channels[i].c_str();
strcpy(((msg->txt_channels)+i)->ch_channel, tstr);
}
//msg.txt_channels = minfo;
int size = sizeof(struct sockaddr);
int res= sendto(sockfd, msg, (sizeof(struct text_list)+(numCHAN *sizeof(struct channel_info))), 0, (struct sockaddr*)&address, size);
if (res == -1) {
cout << "sendto very badd \n";
//return -1;
}
//free(msg);
return 0;
}
//handle login requests
int whoReq(struct request_who *rw)
{
return 0;
}
int readRequestType(struct request *r, int b)
{
int fin = 0;
int netHost = 0;
netHost = ntohl(r->req_type);
//check if addres is a crazy number or normal
if(netHost > 6 || netHost < 0) {
netHost = r->req_type;
}
//check if request address is valid
if(netHost != 0) {
if(checkValidAddr() == -1) {
cout << "invalid address\n";
return -1;
}
}
switch(netHost) {
case REQ_LOGIN:
if(sizeof(struct request_login) == b) {
cout << "login request\n";
fin = loginReq((struct request_login*) r);
break;
} else {
cout << "login request FAILED\n";
break;
}
case REQ_LOGOUT:
if(sizeof(struct request_logout) == b) {
cout << "logout request\n";
fin = logoutReq((struct request_logout*) r);
break;
} else {
cout << "logout request bad size\n";
break;
}
case REQ_JOIN:
//printf("join case made \n");
if(sizeof(struct request_join) == b) {
cout << "join request\n";
fin = joinReq((struct request_join*) r);
break;
} else {
cout << "switch request bad size\n";
break;
}
case REQ_LEAVE:
if(sizeof(struct request_leave) == b) {
cout << "leave request\n";
fin = leaveReq((struct request_leave*) r);
break;
} else {
cout << "leave request bad size\n";
break;
}
case REQ_SAY:
if(sizeof(struct request_say) == b) {
cout << "say request\n";
fin = sayReq((struct request_say*) r);
break;
} else {
cout << "say request bad size\n";
break;
}
case REQ_LIST:
if(sizeof(struct request_list) == b) {
cout << "list request\n";
fin = listReq((struct request_list*) r);
break;
} else {
cout << "list request bad size\n";
break;
}
case REQ_WHO:
if(sizeof(struct request_who) == b) {
cout << "who request\n";
fin = whoReq((struct request_who*) r);
break;
} else {
cout << "who request bad size\n";
break;
}
default:
cout << "default case hit!!\n";
}
return fin;
}
int connectToSocket(char* ip, char* port)
{
struct addrinfo addressTmp;
memset(&addressTmp, 0, sizeof addressTmp);
addressTmp.ai_family = AF_INET;
addressTmp.ai_socktype = SOCK_DGRAM;
addressTmp.ai_flags = AI_PASSIVE;
int check = 0;
if((check = getaddrinfo(ip, port, &addressTmp, &addrAr))!= 0)
{
cout << "Server : getaddrinfo() NOT successful \n";
return false;
}
if((sockfd = socket(addrAr->ai_family, addrAr->ai_socktype, addrAr->ai_protocol)) == -1)
{
cout << "Server : socket() NOT successful \n";
return false;
}
if(bind(sockfd, addrAr->ai_addr, addrAr->ai_addrlen) == -1)
{
cout << "Server : bind() NOT successful \n";
return false;
}
cout << "socket and bind successful! \n";
return true;
}