minicom.c

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 	while(*bufp) {
 		for(s = bufp; !isspace(*bufp) && *bufp; bufp++)
 			;
 		args[argk++] = s;
 		while(isspace(*bufp)) *bufp++ = 0;
 	}
  }
  env_args = argk;

  /* Add command - line options */
  for(c = 1; c < argc; c++) args[argk++] = argv[c];
  args[argk] = CNULL;

  do {
	/* Process options with getopt */
	while((c = getopt(argk, args, "hlsomc:a:t:")) != EOF) switch(c) {
  		case 's': /* setup */
  			if (real_uid != 0) {
		fprintf(stderr, "minicom: -s switch needs root privilige\n");
				exit(1);
			}
  			dosetup = 1;
  			break;
		case 'h':
			helpthem();
			exit(1);
			break;
  		case 'm': /* metakey */
  			alt_override++;
  			break;
		case 'l': /* Literal ANSI chars */
			literal++;
			break;
		case 't': /* Terminal type */
			strcpy(termtype, optarg);
			break;
  		case 'o': /* DON'T initialize */
 	 		doinit = 0;
  			break;
  		case 'c': /* Color on/off */
  			if (strcmp("on", optarg) == 0) {
  				usecolor = 1;
  				stdattr = A_BOLD;
  				break;
  			}
  			if (strcmp("off", optarg) == 0) {
  				usecolor = 0;
  				stdattr = A_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;
  		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) {
  	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)) {
				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);
			exit(1);
		}
	}
  }
  buf[0] = 0;

  read_parms();
  stdwin = NIL_WIN; /* It better be! */
  if (!dosetup && open_term(doinit) < 0) exit(1);

#ifdef _SECURE
  /* After open /dev/tty..., we can run setgid uucp instead of setuid root.
   * We have to run setgid uucp to be able to create lockfiles, and
   * to execute the callin and callout programs.
   * To do this, minicom should be installed setuid root/setgid uucp.
   */
  if (real_uid != 0 && geteuid() == 0 && getegid() != real_gid)
  	setuid(real_uid);
#endif

  mc_setenv("TERM", termtype);

  if (win_init(SFG, SBG, A_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
	signal(c, hangsig);
  }

  signal(SIGHUP, SIG_IGN);
  signal(SIGINT, SIG_IGN);
  signal(SIGQUIT, SIG_IGN);
  signal(SIGPIPE, SIG_IGN);

#ifdef SIGTSTP
  signal(SIGTSTP, SIG_IGN);
  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, 128);
  else if (strcmp(P_ESCAPE, "^A") != 0)
	keyboard(KSETESC, P_ESCAPE[0] == '^' ? P_ESCAPE[1] & 31 : 128);

  st = NIL_WIN;
  us = NIL_WIN;

  init_emul(VT100);
 
  if (doinit) modeminit();
 
  wputs(us, "\nMinicom 1.5 Beta Copyright (c) 1993 Miquel van Smoorenburg\r\n");
  wprintf(us, "\nPress %sZ for help on special keys\r\n\n", esc_key());

  readdialdir();

  /* The main loop calls do_terminal and gets a function key back. */
  do {
	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;
			break;
		case 'x': /* Exit Minicom */
			c = ask("Leave Minicom?", c1);
			if (c == 0) {
				quit = RESET;
				if(online >= 0)
					do_hang(0);
				modemreset();	 
			}
			break;
		case 'l': /* Capture file */
			if (capfp == (FILE *)0 && !docap) {
				s = input("Capture to which file? ", capname);
				if (s == CNULL || *s == 0) break;
				if ((c = waccess(s)) < 0 ||
				    (capfp = fopen(s, "a")) == (FILE *)NULL) {
					werror("Cannot open capture file");
					break;
				} else if (c == A_OK_NOTEXIST)
#ifndef DEBUG
#ifndef HAS_FCHOWN
						/* FIXME: should use fchown */
						chown(s, real_uid, real_gid);
#else
						fchown(fileno(capfp), real_uid,
								real_gid);
#endif
#endif
				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, linewrap, capfp, docap, -1, -1, -1);
			break;
		case 'p': /* Set parameters */
			get_bbp(P_BAUDRATE, P_BITS, P_PARITY);
			m_setparms(portfd, P_BAUDRATE, P_PARITY, P_BITS);
			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 = wselect(13, 3, c8, NIL_FUNLIST,
				"Emulation", stdattr, MFG, MBG);
			if (c > 0) init_emul(c);
			break;
		case 'w': /* Line wrap on-off */	
			if (linewrap < 0) linewrap = 0;
			linewrap = !linewrap;
			vt_set(addlf, linewrap, capfp, docap, -1, -1, -1);
			s = linewrap ? "Linewrap ON" : "Linewrap OFF";
			werror(s);
			break;
		case 'o': /* Configure Minicom */
			(void) config(0);
			break;
		case 's': /* Upload */
			updown('U');
			break;
		case 'r': /* Download */
			updown('D');
			break;	
		case 'j': /* Jump to a shell */
			shjump();
			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;
	}
  } while(!quit);

  /* 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);
  keyboard(KUNINSTALL, 0);
  if (lockfile[0]) unlink(lockfile);
  close(portfd);
  chown(P_PORT, portuid, portgid);
  if (quit != NORESET && P_CALLIN[0])
	(void) fastsystem(P_CALLIN, CNULL, CNULL, CNULL);
  return(0);
}