194 lines
4.2 KiB
C
194 lines
4.2 KiB
C
/*
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* emulateur de terminal
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*/
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <time.h>
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#include <sys/time.h>
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#include <sys/select.h>
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#include <ncurses.h>
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#include "../serial/serial.h"
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#include "terminal.h"
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extern int verbosity;
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int special_dumper(FILE *fp, unsigned char octet);
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/* ---------------------------------------------------------------- */
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static void bordure(WINDOW * w, char *texte, int type)
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{
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if (type)
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box(w, 0, 0);
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else
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wborder(w, '|', '|', '-', '-', '+', '+', '+', '+');
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wstandout(w); mvwaddstr(w, 0, 3, texte); wstandend(w);
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wrefresh(w);
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}
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/* ---------------------------------------------------------------- */
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static int interactive(WINDOW *glass, int fd_local, int fd_remote)
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{
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int flag_exit = 0;
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long tstart, tcur;
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char ligne[100];
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int received;
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/* --- variables for select */
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struct timeval tv;
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fd_set rfds;
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int retval,mfd;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p %d %d )\n", __func__,
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glass, fd_local, fd_remote);
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#endif
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tstart = time(NULL);
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wclear(glass); wrefresh(glass);
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mfd = (fd_local>fd_remote ? fd_local : fd_remote) + 1; /* XXX */
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#if DEBUG_LEVEL
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sprintf(ligne, "%s : mfd is %d\n", __func__, mfd);
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waddstr(glass, ligne); wrefresh(glass);
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#endif
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do {
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tcur = time(NULL);
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FD_ZERO(&rfds);
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FD_SET(fd_local, &rfds); /* stdin */
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FD_SET(fd_remote, &rfds); /* teletype */
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tv.tv_sec = tv.tv_usec = 0; /* no timeout */
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retval = select(mfd, &rfds, NULL, NULL, &tv);
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if (-1 == retval) {
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sprintf(ligne, "err select %s\n", strerror(errno));
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waddstr(glass, ligne); wrefresh(glass);
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continue;
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}
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/*** est-ce la liaison serie ? */
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if (FD_ISSET(fd_remote, &rfds)) {
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/* get the incoming byte */
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received = getbyte(fd_remote);
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if (verbosity) {
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special_dumper(stderr, received);
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fflush(stderr);
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}
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if ('\r' != received) waddch(glass, received);
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}
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/*** est-ce le yuser avec son clavier ? */
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if (FD_ISSET(fd_local, &rfds)) {
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noecho();
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received = wgetch(glass);
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echo();
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#if DEBUG_LEVEL > 1
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sprintf(ligne, " got $%X\n", received);
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waddstr(glass, ligne); wrefresh(glass);
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#endif
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if (0==received) sleep(1); /* anti ddos */
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/* que doit-on faire avec ce qu'on
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vient de recevoir ? */
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if (0x04 == received) { /* EOT (end of transmission) */
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waddstr(glass, "--- EOT ---\n"); wrefresh(glass);
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flag_exit = 1;
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}
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putbyte(fd_remote, received);
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}
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wrefresh(glass);
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} while (! flag_exit);
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sleep(1);
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return -1;
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}
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/* ---------------------------------------------------------------- */
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int run_the_terminal(int fd_serial, char *title, WINDOW *win)
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{
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WINDOW *terminal, *ecran;
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int wid_term, hei_term, lin_term, col_term;
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int foo;
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// char ligne[100];
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// unsigned char byte;
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int fd_stdin;
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lin_term = 4; col_term = 9; /* position */
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wid_term = 60; hei_term = 25; /* dimensions */
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fd_stdin = fileno(stdin); /* for select or pool */
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terminal = newwin(hei_term, wid_term, lin_term, col_term);
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if ( NULL==terminal ) return -1;
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bordure(terminal, title, 1);
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ecran = subwin(terminal, hei_term-2, wid_term-2, lin_term+1, col_term+1);
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if ( NULL==ecran ) return -2;
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scrollok(ecran, 1);
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if (verbosity) {
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foo = mvwaddstr(ecran, 2, 14, "SCREEN READY\n");
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#if DEBUG_LEVEL > 1
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fprintf(stderr, "in '%s', mvwaddstr -> %d\n", __func__, foo);
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#endif
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wrefresh(ecran); sleep(1);
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}
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foo = interactive(ecran, fd_stdin, fd_serial);
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if (foo) {
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fprintf(stderr, "interactive -> %d\n", foo);
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sleep(1);
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}
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delwin(terminal);
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touchwin(stdscr); wrefresh(stdscr);
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return 0;
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}
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/* ---------------------------------------------------------------- */
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int essai_terminal(int fd, char *txt, int k)
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{
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int lig, col;
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int foo, retv;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %d '%s' %d )\n", __func__,
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fd, txt, k );
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#endif
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/*** initialisation de curses */
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initscr();
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nonl(); cbreak(); noecho();
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for (lig=0; lig<LINES; lig++) {
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for (col=0; col<COLS; col++) {
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mvaddch(lig, col, "o+OX"[rand()%4]);
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}
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}
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wrefresh(stdscr);
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/*** passons a la partie active */
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retv = run_the_terminal(fd, txt, stdscr);
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/*** terminaison de curses */
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endwin();
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fprintf(stderr, "terminal return %d\n", retv);
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return 0;
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}
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/* ---------------------------------------------------------------- */
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