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#include "client.h"
#include "chatroom.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <arpa/inet.h>
#include <stdlib.h>
extern client_t *clients[];
extern pthread_mutex_t clients_mutex;
void send_to_client(int sock, const char *msg) {
send(sock, msg, strlen(msg), 0);
}
void broadcast_message(const char *message, int sender_sock) {
pthread_mutex_lock(&clients_mutex);
client_t *sender = NULL;
for (int i = 0; i < 10; i++) {
if (clients[i] && clients[i]->socket == sender_sock) {
sender = clients[i];
break;
}
}
if (sender == NULL || strlen(sender->room) == 0) {
pthread_mutex_unlock(&clients_mutex);
return;
}
for (int i = 0; i < 10; i++) {
if (clients[i] && clients[i]->socket != sender_sock &&
strcmp(clients[i]->room, sender->room) == 0) {
char formatted[BUFFER_SIZE + 100];
snprintf(formatted, sizeof(formatted), "%s: %s", clients[i]->username, message);
send_to_client(clients[i]->socket, formatted);
}
}
pthread_mutex_unlock(&clients_mutex);
}
void *handle_client(void *arg) {
client_t *cli = (client_t *)arg;
char buffer[BUFFER_SIZE];
int bytes;
while ((bytes = recv(cli->socket, buffer, BUFFER_SIZE - 1, 0)) > 0) {
buffer[bytes] = '\0';
if (strncmp(buffer, "/join ", 6) == 0) {
char room[50];
sscanf(buffer + 6, "%s", room);
if (join_chatroom(room, cli)) {
char msg[128];
snprintf(msg, sizeof(msg), "You joined '%s'\n", room);
send_to_client(cli->socket, msg);
} else {
send_to_client(cli->socket, "Room does not exist.\n");
}
}
else if (strncmp(buffer, "/list", 5) == 0) {
print_chatroom_list(cli->socket);
}
else if (strncmp(buffer, "/users", 6) == 0) {
pthread_mutex_lock(&clients_mutex);
int count = 0;
for (int i = 0; i < 10; i++)
if (clients[i] && strcmp(clients[i]->room, cli->room) == 0)
count++;
char header[BUFFER_SIZE];
snprintf(header, sizeof(header), "[you are in '%s' among %d]\n\n", cli->room, count);
send_to_client(cli->socket, header);
for (int i = 0; i < 10; i++) {
if (clients[i] && strcmp(clients[i]->room, cli->room) == 0) {
char line[BUFFER_SIZE];
snprintf(line, sizeof(line), "%s@%s\n", clients[i]->username,
inet_ntoa(clients[i]->address.sin_addr));
send_to_client(cli->socket, line);
}
}
pthread_mutex_unlock(&clients_mutex);
}
else {
broadcast_message(buffer, cli->socket);
}
}
close(cli->socket);
pthread_mutex_lock(&clients_mutex);
for (int i = 0; i < 10; i++) {
if (clients[i] == cli) {
leave_chatroom(cli);
clients[i] = NULL;
break;
}
}
pthread_mutex_unlock(&clients_mutex);
free(cli);
pthread_exit(NULL);
}
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