/** * Localchat * Ben Burwell * * Process user input */ void process_user_command() { int i; if (respond_to_chat_request) { // reset the global variable respond_to_chat_request = 0; // first check that we haven't expired time_t now; time(&now); double diff = difftime(now, chat_requested_time); if (diff > REQUEST_TIMEOUT) { printf("The request has timed out. \n"); } else { if (strcmp(command, "y\n") == 0) { accept_callback_accept(); } else { accept_callback_decline(); } } return; } if (strcmp(in_chat, "Y") == 0) { // in chat, send input to the peer if (strcmp(command, "/q\n") == 0) { // send the quit message strcpy(out_buf, "SESQ"); send(client_s, out_buf, strlen(out_buf)+1, 0); // close the socket close(client_s); // set my flag strcpy(in_chat, "N"); status_broadcast_once(); // reset prompt strcpy(prompt, ">"); } else { strcpy(out_buf, "SESMSG:"); strcat(out_buf, command); out_buf[strlen(out_buf)-1] = '\0'; send(client_s, out_buf, strlen(out_buf)+1, 0); } return; } if (strcmp(command, "quit\n") == 0 || strcmp(command, "q\n") == 0) { exit(0); } else if (strcmp(command, "who\n") == 0 || strcmp(command, "w\n") == 0) { // print a list of online peers pthread_mutex_lock(&peer_table_lock); printf(" +---------+-----------------+----------------------------------+ \n"); printf(" | In Chat | IP | Username | \n"); printf(" +---------+-----------------+----------------------------------+ \n"); for (i = 0; i < num_peers_in_table; i++) { printf(" | %s | %-15s | %-32s | \n", peers[i].in_chat, peers[i].ip, peers[i].username); } printf(" +---------+-----------------+----------------------------------+ \n"); pthread_mutex_unlock(&peer_table_lock); } else if (strcmp(command, "chat\n") == 0 || strcmp(command, "c\n") == 0) { char user[32]; int exists; printf("user: "); fgets(user, 32, stdin); user[strlen(user) - 1] = 0; exists = check_user_name(user); if (exists) { printf("Sending chat request to %s... \n", user); send_chat_request(user); } else { printf("%s does not exist. \n", user); } } else if (strcmp(command, "help\n") == 0 || strcmp(command, "?\n") == 0) { printf("Command Summary: \n"); printf(" who: display a list of online peers \n"); printf(" chat: initiate a chat session \n"); printf(" quit: exit the localchat program \n"); } else if (strcmp(command, "\n") == 0) { // no command, do nothing. } else { printf("Unrecognized command. Type `help` or `?` for help. \n"); } }