minicom.c

VT100终端程序

	/* Process options with getopt */
	while((c = getopt(argk, args, "zhlsomMbc:a:t:d:p:")) != EOF) switch(c) {
  		case 's': /* setup */
  			if (real_uid != 0 && real_uid != eff_uid) {
		fprintf(stderr, "minicom: -s switch needs root privilige\n");
				exit(1);
			}
  			dosetup = 1;
  			break;
		case 'h':
			helpthem();
			exit(1);
			break;
		case 'p': /* Pseudo terminal to use. */
			if (strncmp(optarg, "/dev/", 5) == 0)
				optarg += 5;
			if (strncmp(optarg, "tty", 3) != 0 ||
			    !strchr("pqrstuvwxyz", optarg[3])) {
				fprintf(stderr, "minicom: argument to -p must be a pty\n");
				exit(1);
			}
			sprintf(pseudo, "/dev/%s", optarg);
			dial_tty = pseudo;

			/* Drop priviliges. */
			drop_all_privs();
			break;
  		case 'm': /* ESC prefix metakey */
  			alt_override++;
			alt_code = 27;
			break;
		case 'M': /* 8th bit metakey. */
  			alt_override++;
			alt_code = 128;
  			break;
		case 'l': /* Literal ANSI chars */
			screen_ibmpc++;
			break;
		case 'L': /* Literal ISO8859 chars */
			screen_iso++;
			break;
		case 't': /* Terminal type */
			strcpy(termtype, optarg);
#ifdef __linux__
			/* Bug in older libc's (< 4.5.26 I think) */
			if ((s = getenv("TERMCAP")) != NULL && *s != '/')
				unsetenv("TERMCAP");
#endif
			break;
  		case 'o': /* DON'T initialize */
 	 		doinit = 0;
  			break;
  		case 'c': /* Color on/off */
  			if (strcmp("on", optarg) == 0) {
  				usecolor = 1;
  				stdattr = XA_BOLD;
  				break;
  			}
  			if (strcmp("off", optarg) == 0) {
  				usecolor = 0;
  				stdattr = XA_NORMAL;
  				break;
  			}
  			usage(env_args, optind - 1, mc);
  			break;
  		case 'a': /* Attributes on/off */
  			if (strcmp("on", optarg) == 0) {
  				useattr = 1;
  				break;
  			}
  			if (strcmp("off", optarg) == 0) {
  				useattr = 0;
  				break;
  			}
  			usage(env_args, optind - 1, mc);
  			break;
		case 'd': /* Dial from the command line. */
			cmd_dial = optarg;
			break;
		case 'z': /* Enable status line. */
			use_status = 1;
			break;
  		default:
  			usage(env_args, optind, mc);
  			break;
  	}

  	/* Now, get portname if mentioned. Stop at end or '-'. */
 	while(optind < argk && args[optind][0] != '-')
  		use_port = args[optind++];

    /* Loop again if more options */
  } while(optind < argk);

  if (real_uid == 0 && dosetup == 0) {
	fprintf(stderr, "%s%s%s",
  "minicom: WARNING: please don't run minicom as root when not maintaining\n",
  "                  it (with the -s switch) since all changes to the\n",
  "                  configuration will be GLOBAL !.\n");
	sleep(5);
  }

  /* Avoid fraude ! */	
  for(s = use_port; *s; s++) if (*s == '/') *s = '_';
  sprintf(parfile, "%s/minirc.%s", LIBDIR, use_port);

  /* Get password file information of this user. */
  if ((pwd = getpwuid(real_uid)) == (struct passwd *)0) {
  	fprintf(stderr, "You don't exist. Go away.\n");
  	exit(1);
  }

  /* Remember home directory and username. */
  if ((s = getenv("HOME")) == CNULL)
	strcpy(homedir, pwd->pw_dir);
  else
	strcpy(homedir, s);
  strcpy(username, pwd->pw_name);

  /* Get personal parameter file */
  sprintf(pparfile, "%s/.minirc.%s", homedir, use_port);

  /* Check this user in the USERFILE */
  if (real_uid != 0 && real_uid != eff_uid) {
  	sprintf(userfile, "%s/minicom.users", LIBDIR);
	if ((fp = fopen(userfile, "r")) != (FILE *)0) {
		while(fgets(buf, 70, fp) != CNULL && !userok) {
			/* Read first word */
			bufp = buf;
			s = getword(&bufp);
			/* See if the "use_port" matches */
			if (s && (!strcmp(pwd->pw_name, s) ||
				strcmp("ALL", s) == 0)) {
				if ((s = getword(&bufp)) == CNULL)
					userok = 1;
				else do {
					if (!strcmp(s, use_port)) {
						userok = 1;
						break;
					}
				} while((s = getword(&bufp)) != CNULL);
			}
		}
		fclose(fp);
		if (!userok) {
			fprintf(stderr,
   "Sorry %s. You are not allowed to use configuration %s.\n",
				pwd->pw_name, use_port);
			fprintf(stderr, "Ask your sysadm to add your name to %s\n",
				userfile);
			exit(1);
		}
	}
  }
  buf[0] = 0;

  read_parms();
  if (dial_tty == NULL) dial_tty = P_PORT;

  stdwin = NIL_WIN; /* It better be! */

  /* Reset colors if we don't use 'em. */
  if (!usecolor) {
  	mfcolor = tfcolor = sfcolor = WHITE;
  	mbcolor = tbcolor = sbcolor = BLACK;
	st_attr = XA_REVERSE;
  }
  if (!dosetup && open_term(doinit) < 0) exit(1);

  mc_setenv("TERM", termtype);

  if (win_init(tfcolor, tbcolor, XA_NORMAL) < 0) leave("");

  if (COLS < 40 || LINES < 10) {
  	leave("Sorry. Your screen is too small.\n");
  }

  if (dosetup) {
  	if (config(1)) {
  		wclose(stdwin, 1);
  		exit(0);
  	}
  	if (open_term(doinit) < 0) exit(1);
  }

  /* Signal handling */
  for(c = 1; c <= _NSIG; c++) {
#ifdef SIGCLD /* Better not mess with those */
	if (c == SIGCLD) continue;
#endif
#ifdef SIGCHLD
	if (c == SIGCHLD) continue;
#endif
#ifdef SIGCONT
	if (c == SIGCONT) continue;
#endif
	signal(c, hangsig);
  }

#if 0 /* Is this OK? */
  signal(SIGHUP, SIG_IGN);
#endif
  signal(SIGINT, SIG_IGN);
  signal(SIGQUIT, SIG_IGN);
  signal(SIGPIPE, SIG_IGN);

#ifdef SIGTSTP
  signal(SIGTSTP, shjump);
  signal(SIGTTIN, SIG_IGN);
  signal(SIGTTOU, SIG_IGN);
#endif
#ifdef SIGTINT
	signal(SIGTINT, SIG_IGN);
#endif
#ifdef SIGWINCH
  signal(SIGWINCH, change_size);
#endif

#if DEBUG
  for(c = 1; c < _NSIG; c++) {
	if (c == SIGTERM) continue; /* Saviour when hung */
	signal(c, signore);
  }
#endif

  keyboard(KINSTALL, 0);

  if (strcmp(P_BACKSPACE, "BS") != 0) 
	keyboard(KSETBS, P_BACKSPACE[0] == 'B' ? 8 : 127);
  if (alt_override)
	keyboard(KSETESC, alt_code);
  else if (strcmp(P_ESCAPE, "^A") != 0) {
	switch(P_ESCAPE[0]) {
		case '^':
			c = P_ESCAPE[1] & 31;
			break;
		case 'E':
			c = 27;
			break;
		default:
			c = 128;
			break;
	}
	keyboard(KSETESC, c);
  }

  st = NIL_WIN;
  us = NIL_WIN;

  init_emul(VT100, 1);
 
  if (doinit) modeminit();
 
  wputs(us, CR_VERSION);
  wprintf(us, "\nPress %sZ for help on special keys\r\n\n", esc_key());

  /* Now that all initialization is done, drop our priviliges. */
  drop_privs();

  readdialdir();

  if (cmd_dial) dialone(cmd_dial);

  /* The main loop calls do_terminal and gets a function key back. */
  while(!quit) {
	c = do_terminal();
dirty_goto:	
	switch(c + 32 *(c >= 'A' && c <= 'Z')) {
		case 'a': /* Add line feed */
			addlf = !addlf;
			vt_set(addlf, -1, NULL, -1, -1, -1, -1);
			s = addlf ? "Add linefeed ON" : "Add linefeed OFF";
			werror(s);
			break;
#if _SELECT
		case 'e': /* Local echo on/off. */
			local_echo = !local_echo;
			vt_set(-1, -1, NULL, -1, -1, local_echo, -1);
			s = local_echo ? "Local echo ON" : "Local echo OFF";
			werror(s);
			break;
#endif
		case 'z': /* Help */
			c = help();
			if (c != 'z') goto dirty_goto;
			break;
		case 'c': /* Clear screen */
			winclr(us);
			break;	
		case 'f': /* Send break */
			sendbreak();
			break;
#if HISTORY
		case 'b': /* Scroll back */
			scrollback();
			break;
#endif
		case 'm': /* Initialize modem */
			modeminit();
			break;	
		case 'q': /* Exit without resetting */
			c = ask("Leave without reset?", c1);
			if (c == 0) quit = NORESET;
#if _HAVE_MACROS
			if (!strcmp(P_MACCHG,"CHANGED")) {
				c = ask ("Save macros?",c1);
				if (c == 0)
					if (dodflsave() < 0) /* fmg - error */
					{
						c = 'O'; /* hehe */
						quit = 0;
						goto dirty_goto;
					}
			}
#endif
			break;
		case 'x': /* Exit Minicom */
			c = ask("Leave Minicom?", c1);
			if (c == 0) {
				quit = RESET;
				if(online >= 0)
					do_hang(0);
				modemreset();	 
			}
#if _HAVE_MACROS
			if (!strcmp(P_MACCHG,"CHANGED")) {
				c = ask ("Save macros?",c1);
				if (c == 0)
					if (dodflsave() < 0) /* fmg - error */
					{
						c = 'O'; /* hehe */
						quit = 0;
						goto dirty_goto;
					}
			}
#endif
			break;
		case 'l': /* Capture file */
			if (capfp == (FILE *)0 && !docap) {
				s = input("Capture to which file? ", capname);
				if (s == CNULL || *s == 0) break;
				if ((capfp = sfopen(s, "a")) == (FILE *)NULL) {
					werror("Cannot open capture file");
					break;
				}
				docap = 1;
			} else if (capfp != (FILE *)0 && !docap) {
				c = ask("Capture file", c3);
				if (c == 0) {
					fclose(capfp);
					capfp = (FILE *)NULL;
					docap = 0;
				}
				if (c == 1) docap = 1;
			} else if (capfp != (FILE *)0 && docap) {
				c = ask("Capture file", c2);
				if (c == 0) {
					fclose(capfp);
					capfp = (FILE *)NULL;
					docap = 0;
				}
				if (c == 1) docap = 0;
			}
			vt_set(addlf, -1, capfp, docap, -1, -1, -1);
			break;
		case 'p': /* Set parameters */
			get_bbp(P_BAUDRATE, P_BITS, P_PARITY, 0);
			port_init();
			if (st != NIL_WIN) mode_status();
			quit = 0;
			break;
		case 'k': /* Run kermit */
			kermit();
			break;
		case 'h': /* Hang up */
			do_hang(1);
			break;
		case 'd': /* Dial */
			dialdir();
			break;		
		case 't': /* Terminal emulation */
			c = dotermmenu();
			if (c > 0) init_emul(c, 1);
			break;
		case 'w': /* Line wrap on-off */	
			c = (!us->wrap);
			vt_set(addlf, c, capfp, docap, -1, -1, -1);
			s = c ? "Linewrap ON" : "Linewrap OFF";
			werror(s);
			break;
		case 'o': /* Configure Minicom */
			(void) config(0);
			break;
		case 's': /* Upload */
			updown('U', 0);
			break;
		case 'r': /* Download */
			updown('D', 0);
			break;	
		case 'j': /* Jump to a shell */
			shjump(0);
			break;
		case 'g': /* Run script */	
			runscript(1, "", "", "");
			break;
		case 'i': /* Re-init, re-open portfd. */
			cursormode = (cursormode == NORMAL) ? APPL : NORMAL;
			keyboard(cursormode == NORMAL ? KCURST : KCURAPP, 0);
			if (st) curs_status();
			break;
		default:
			break;
	}
  };

  /* Reset parameters */
  if (quit != NORESET)
	m_restorestate(portfd);
  else
	m_hupcl(portfd, 0);
  if (capfp != (FILE *)0) fclose(capfp);
  wclose(us, 0);
  wclose(st, 0);
  wclose(stdwin, 1);
  set_privs();
  keyboard(KUNINSTALL, 0);
  if (lockfile[0]) unlink(lockfile);
  close(portfd);
  /* Please - if your system doesn't have uid_t and/or gid_t, define 'em
   * conditionally in "port.h".
   */
  chown(dial_tty, (uid_t)portuid, (gid_t)portgid);
  if (quit != NORESET && P_CALLIN[0])
	(void) fastsystem(P_CALLIN, CNULL, CNULL, CNULL);
  return(0);
}