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/**
* Localchat
* Ben Burwell
*
* Chat request accepting functionality
*/
void *receive_chat_messages(void *arg) {
char in_buf[1024];
int length = 1024;
int retcode;
retcode = recv(client_s, in_buf, length, 0);
printf("%s \n", in_buf);
while (strcmp(in_buf, "SESQ")) {
retcode = recv(client_s, in_buf, length, 0);
if (retcode > 0) {
printf("%s \n", in_buf);
}
}
}
void *chat_acceptor(void *arg) {
int client_s;
char in_buf[4096];
char out_buf[4096];
int length = 4096;
char command[4096];
int retcode;
int i;
char * token;
struct sockaddr_in client_addr;
client_s = (int) arg;
retcode = recv(client_s, in_buf, length, 0);
if (strcmp(in_chat, "Y") == 0) {
// if already in a chat, reply no and close
strcpy(out_buf, "SESANS:N");
send(client_s, out_buf, strlen(out_buf)+1, 0);
close(client_s);
} else {
// not in a chat, ask the user
char ans[4];
printf("\n*** CHAT REQUEST *** \n");
printf("Accept [y/n]? ");
fflush(stdout);
fgets(ans, 2, stdin);
if (strcmp(ans, "y") == 0) {
strcpy(out_buf, "SESANS:Y");
send(client_s, out_buf, strlen(out_buf)+1, 0);
char inp[256];
pthread_t recv_thread;
pthread_create(&recv_thread, NULL, receive_chat_messages, NULL);
while (strcmp(inp, "/q\n") != 0) {
printf("chat> ");
fgets(inp, 256, stdin);
if (strcmp(inp, "/q\n") != 0) {
strcpy(out_buf, "SESMSG:");
strcat(out_buf, inp);
send(client_s, out_buf, strlen(out_buf)+1, 0);
} else {
strcpy(out_buf, "SESQ");
send(client_s, out_buf, strlen(out_buf)+1, 0);
}
}
} else {
strcpy(out_buf, "SESANS:N");
send(client_s, out_buf, strlen(out_buf)+1, 0);
}
}
close(client_s);
return;
}
void *server_loop(void *arg) {
int server_s;
struct sockaddr_in server_addr;
int client_s;
struct sockaddr_in client_addr;
struct in_addr client_ip_addr;
socklen_t addr_len;
pthread_t thread_id;
int retcode;
server_s = socket(AF_INET, SOCK_STREAM, 0);
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(CHAT_PORT);
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
retcode = bind(server_s, (struct sockaddr *)&server_addr, sizeof(server_addr));
if (retcode < 0) {
printf("Network error, quitting... \n");
exit(-1);
}
listen(server_s, 100);
while (1) {
addr_len = sizeof(client_addr);
client_s = accept(server_s, (struct sockaddr *)&client_addr, &addr_len);
if (client_s == -1) {
printf("Network error, quitting... \n");
exit(-1);
}
pthread_create(&thread_id, NULL, chat_acceptor, (void *)client_s);
}
return;
}
void start_accepting_chat_requests() {
pthread_t thread;
pthread_create(&thread, NULL, server_loop, NULL);
}
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