/* * BIRD Client - Light variant I/O * * (c) 1999--2004 Martin Mares <mj@ucw.cz> * (c) 2013 Tomas Hlavacek <tomas.hlavacek@nic.cz> * * Can be freely distributed and used under the terms of the GNU GPL. */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <termios.h> #include <sys/ioctl.h> #include <signal.h> #include "nest/bird.h" #include "lib/resource.h" #include "lib/string.h" #include "client/client.h" #include "sysdep/unix/unix.h" #define INPUT_BUF_LEN 2048 struct termios tty_save; void input_start_list(void) { /* Empty in non-ncurses version. */ } void input_stop_list(void) { /* Empty in non-ncurses version. */ } void input_notify(int prompt) { /* No ncurses -> no status to reveal/hide, print prompt manually. */ if (!prompt) return; printf("bird> "); fflush(stdout); } static int lastnb(char *str, int i) { while (i--) if ((str[i] != ' ') && (str[i] != '\t')) return str[i]; return 0; } void input_read(void) { char buf[INPUT_BUF_LEN]; if ((fgets(buf, INPUT_BUF_LEN, stdin) == NULL) || (buf[0] == 0)) { putchar('\n'); cleanup(); exit(0); } int l = strlen(buf); if ((l+1) == INPUT_BUF_LEN) { printf("Input too long.\n"); return; } if (buf[l-1] == '\n') buf[--l] = '\0'; if (!interactive) printf("%s\n", buf); if (l == 0) return; if (lastnb(buf, l) == '?') { cmd_help(buf, strlen(buf)); return; } submit_command(buf); } static struct termios stored_tty; static int more_active = 0; void more_begin(void) { static struct termios tty; tty = stored_tty; tty.c_lflag &= (~ECHO); tty.c_lflag &= (~ICANON); if (tcsetattr (0, TCSANOW, &tty) < 0) die("tcsetattr: %m"); more_active = 1; } void more_end(void) { more_active = 0; if (tcsetattr (0, TCSANOW, &stored_tty) < 0) die("tcsetattr: %m"); } static void sig_handler(int signal) { cleanup(); exit(0); } void input_init(void) { if (!interactive) return; if (tcgetattr(0, &stored_tty) < 0) die("tcgetattr: %m"); if (signal(SIGINT, sig_handler) == SIG_IGN) signal(SIGINT, SIG_IGN); if (signal(SIGTERM, sig_handler) == SIG_IGN) signal(SIGTERM, SIG_IGN); struct winsize tws; if (ioctl(0, TIOCGWINSZ, &tws) == 0) { term_lns = tws.ws_row; term_cls = tws.ws_col; } } void cleanup(void) { if (more_active) more_end(); }