minicom.c

minicom2.0源代码

/*
 * minicom.c	Main program. The main loop of the terminal emulator
 *		itself is in main.c. (Yeah yeah it's confusing).
 *
 *		This file is part of the minicom communications package,
 *		Copyright 1991-1996 Miquel van Smoorenburg.
 *
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 *
 * fmg 1/11/94 colors
 * jl  30.06.97 log it if you quit without reset while online
 * fmg 8/20/97 History buffer searching added
 * [e-mail] (Jim Seymour) 03/26/98 - Added support for
 *    multiple tty devices via new "get_port()" function.
 * [e-mail] 07/98  - Added option -C to start capturing from the
 *				command line
 * jl  09.07.98 added option -S to start a script at startup
 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "rcsid.h"
RCSID(PKG_VER "$Id: minicom.c,v 1.14 2001/07/04 14:43:25 kloczek Exp $")

#include <getopt.h>

#define EXTERN
#include "port.h"
#include "minicom.h"
#include "intl.h"


#define RESET 1
#define NORESET 2

#ifdef _SVR2
extern struct passwd *getpwuid();
#endif /*_SVR2*/

#ifdef DEBUG
/* Show signals when debug is on. */
static void signore(sig)
int sig;
{
  if (stdwin != NIL_WIN)
	werror(_("Got signal %d"), sig);
  else
	printf("%s\r\n", _("Got signal %d"), sig);
}
#endif /*DEBUG*/

/*
 * Sub - menu's.
 */

static char *c1[] = { N_("   Yes  "), N_("   No   "), CNULL };
static char *c2[] = { N_("  Close "), N_(" Pause  "), N_("  Exit  "), CNULL };
static char *c3[] = { N_("  Close "), N_(" Unpause"), N_("  Exit  "), CNULL };
static char *c7[] = { N_("   Yes  "), N_("   No   "), CNULL };

/* Initialize modem port. */
void port_init()
{
  m_setparms(portfd, P_BAUDRATE, P_PARITY, P_BITS, P_STOPB,
	     P_HASRTS[0] == 'Y', P_HASXON[0] == 'Y');
}

static void do_hang(askit)
int askit;
{
  int c = 0;
 
  if (askit) c = ask(_("Hang-up line?"), c7);
  if (c == 0) hangup();
}

/*
 * We've got the hangup or term signal.
 */
static void hangsig(sig)
int sig;
{
  if (stdwin != NIL_WIN)
	werror(_("Killed by signal %d !\n"), sig);
  if (capfp != (FILE *)0) fclose(capfp);
  keyboard(KUNINSTALL, 0);
  hangup();
  modemreset();
  leave("\n");
}

/*
 * Jump to a shell
 */
#ifdef SIGTSTP
/*ARGSUSED*/
static void shjump(sig)
int sig;
{
  extern int use_status;

  wleave();
  signal(SIGTSTP, SIG_DFL);
  fputs(_("Suspended. Type \"fg\" to resume.\n"),stdout);
  kill(getpid(), SIGTSTP);
  signal(SIGTSTP, shjump);
  wreturn();
  if (use_status) show_status();
}
#else
/*ARGSUSED*/
static void shjump(dummy)
int dummy;
{
  extern int use_status;

  char *sh;
  int pid;
  int status;
  int f;

  sh = getenv("SHELL");
  if (sh == CNULL) {
  	werror(_("SHELL variable not set"));
  	return;
  }
  if ((pid = fork()) == -1) {
  	werror(_("Out of memory: could not fork()"));
  	return;
  }
  if (pid != 0) wleave();
  if (pid == 0) {
	for(f = 1; f < _NSIG; f++) signal(f, SIG_DFL);
  	for(f = 3; f < 20; f++) close(f);
	set_privs();
	setgid((gid_t)real_gid);
  	setuid((uid_t)real_uid);
	fputs(_("Shelled out. Type \"exit\" to return.\n"), stdout);
  	execl(sh, sh, CNULL);
  	exit(1);
  }
  (void) m_wait(&status);
  wreturn();
  if (use_status) show_status();
}
#endif /*SIGTSTP*/

#if _HISTORY
/* Get a line from either window or scroll back buffer. */
static ELM *getline(w, no)
WIN *w;
int no;
{
  int i;
  static ELM outofrange[MAXCOLS] = {{0,0,0}};

  if (no < us->histlines) {
	/* Get a line from the history buffer. */
	i = no + us->histline /*- 1*/;
	if (i >= us->histlines) i -= us->histlines;
	if (i < 0) i = us->histlines - 1;
	return(us->histbuf + (i * us->xs));
  }

  /* Get a line from the "us" window. */
  no -= us->histlines;
  if (no >= w->ys) {
  	if (outofrange[0].value == 0) {
  		for (i=0; i<MAXCOLS; i++) {
  			outofrange[i].value = ' ';
  			outofrange[i].color = us->color;
  			outofrange[i].attr  = us->attr;
  		}
  		outofrange[0].value = '~';
  	}
  	return outofrange;
  }
  return(w->map + (no * us->xs));
}

/* Redraw the window. */
static void drawhist(w, y, r)
WIN *w;
int y;
int r;
{
  int f;

  w->direct = 0;
  for(f = 0; f < w->ys; f++)
	wdrawelm(w, f, getline(w, y++));
  if (r) wredraw(w, 1);
  w->direct = 1;
}

#if _SEARCH_HISTORY
/*
 * fmg 8/20/97
 * drawhist_look()
 * Redraw the window, highlight line that was found to contain
 * pattern 'look'
 * Needed by re-draw screen function after EACH find_next()
 */
void drawhist_look(w, y, r, look, case_matters)
WIN	*w;
int	y;
int	r;
char	*look;
int	case_matters;
{
  int f;
  ELM *tmp_e;
  char tmp_line[MAXCOLS];

  tmp_line[0]='\0';
  w->direct = 0;
  for (f = 0; f < w->ys; f++)
  {
	tmp_e = getline(w, y++);

  	/* First we "accumulate" the line into a variable */
	wdrawelm_var(w, f, tmp_e, tmp_line);

	/* Does it have what we want? */
	if (strlen(look)>1 && strlen(tmp_line)>1) {
		if (StrStr(tmp_line,look, case_matters))
			wdrawelm_inverse(w, f, tmp_e); /* 'inverse' it */
  		else
			wdrawelm(w, f, tmp_e); /* 'normal' output */
	}
  }

  if (r) wredraw(w, 1);
  w->direct = 1;
}

/*
 * fmg 8/20/97
 * Search history - main function that started the C-code blasphemy :-)
 * This function doesn't care about case/case-less status...
 */
void searchhist(w_orig, w_hist, r, str)
WIN *w_orig,*w_hist;
int r;
char *str;
{
  int y;
  WIN *w_new;
  char hline[128];

  /* Find out how big a window we must open. */
  y = w_hist->y2;
  if (st == (WIN *)0 || (st && tempst)) y--;

  /* Open a Search line window. */
  w_new = wopen(0, y+1, w_hist->x2, y+1, 0, st_attr, sfcolor, sbcolor, 0, 0, 1);
  w_new->doscroll = 0;
  w_new->wrap = 0;

  strcpy(hline, _("SEARCH FOR (ESC=Exit)"));
  wprintf(w_new, "%s(%d):",hline,MAX_SEARCH);
  wredraw(w_new, 1);
  wflush();

  wlocate(w_new, strlen(hline)+6, 0); wputs(w_new, str);
  wlocate(w_new, strlen(hline)+6, 0);
  (void) wgets(w_new, str, MAX_SEARCH, MAX_SEARCH);
#if 0
  if (!str[0]) /* then unchanged... must have pressed ESC... get out */
  {
  	wflush();
  	wclose(w_new, 0);
  	return;
  }
#endif

  wredraw(w_hist, 1);
  wclose(w_new, 1);
  wflush();

  return;
}

/*
 * fmg 8/20/97
 * Move scope to next hit of pattern in the buffer.
 * Returns line-number of next "hit_line" or -1 if none found
 * (we beep elsewhere ;-)
 */
int find_next(w, w_hist, hit_line, look, case_matters)
WIN	*w;
WIN	*w_hist;
int	hit_line;	/* 'current' Match line */
char	*look;		/* pattern */
int	case_matters;	/* guess... */
{
  int next_line;
  ELM *tmp_e;
  char tmp_line[MAXCOLS];
  int all_lines;

  if (!look)
  	return(++hit_line); /* next line */

  tmp_line[0]='\0';	/* Personal phobia, I need to do this.. */

  hit_line++;	/* we NEED this so we don't search only same line! */
  all_lines = w->histlines + w_hist->ys;

  if (hit_line >= all_lines)	/* Make sure we've got a valid line! */
  {
	werror(_("Search Wrapping Around to Start!"));
	hit_line = 0;
  }

  for (next_line = hit_line; next_line <= all_lines; next_line++)
  {
	/* we do 'something' here... :-) */
	tmp_e = getline(w_hist, next_line);

  	/*
	 * First we "accumulate" the line into a variable.
	 * To see 'why', see what an 'ELM' structure looks like!
	 */
	wdrawelm_var(w, next_line, tmp_e, tmp_line);

	/* Does it have what we want? */
	if (strlen(tmp_line) > 1 && strlen(look) > 1)
		if (StrStr(tmp_line, look, case_matters))
  			return(next_line);
  }

  if (hit_line >= all_lines)	/* Make sure we've got a valid line! */
  {
	werror(_("Search Wrapping Around to Start!"));
	hit_line = 0;
  }

  return(-1); /* nothing found! */
}

/*
 * fmg 8/22/97
 * Needed this for the case-less conparison... and Linux libc
 * doesn't seem to have a strnstr function... so we fudge.. ;-)
 */
const char *upcase(dest, src)
char	*dest, *src;
{
char	*d;

d=dest;
while (*src)
	*d++=toupper(*src++);
*d='\0';
return (dest);
}

/*
 * fmg 8/22/97
 * Needed this for the case-less conparison... and Linux libc
 * doesn't seem to have a strnstr function... so we fudge.. ;-)
 */
char *StrStr(str1, str2, case_matters)
char	*str1, *str2;
int	case_matters;
{
char	tmpstr1[MAXCOLS],
	tmpstr2[MAXCOLS];

if (case_matters)
	return (strstr(str1,str2));
else
  	return (strstr(upcase(tmpstr1,str1),upcase(tmpstr2,str2)));
}


#endif /*_SEARCH_HISTORY*/

static void drawcite(w, y, citey, start, end)
WIN *w;
int y;
int citey;
int start;
int end;
{
  if (y+citey >= start && y+citey <= end) 
	wdrawelm_inverse(w, y, getline(w, y+citey));
  else
	wdrawelm(w, y, getline(w, y+citey));
}

static void drawcite_whole(w, y, start, end)
WIN *w;
int y, start, end;
{
  int sy;
  for (sy = 0; sy < w->ys; sy++) {
	drawcite(w, sy, y, start, end);
  }
}

static void do_cite(w, start, end)
WIN *w;
int start,end;
{
  char tmp_line[MAXCOLS];
  ELM *tmp_e;
  int x, y;

  for (y=start; y<=end; y++) {
	vt_send('>');
	vt_send(' ');
	tmp_e = getline(w, y);
	wdrawelm_var(w, 0 /* dummy? */, tmp_e, tmp_line);
	tmp_line[w->xs]=0;
	for (x=w->xs-1; x>=0; x--){
		if (tmp_line[x] <= ' ') tmp_line[x]=0;
		else break;
	}
	for (x=0; tmp_line[x]; x++){
		vt_send(tmp_line[x]);
	}
	vt_send(13);
  }
}

/* Scroll back */
static void scrollback()
{
  int y,c;
  WIN *b_us, *b_st;
#if _SEARCH_HISTORY
  ELM *tmp_e;
  int case_matters=0;	/* fmg: case-importance, needed for 'N' */
  static char look_for[MAX_SEARCH];	/* fmg: last used search pattern */
  char tmp_line[MAXCOLS];
#endif /*SEARCH_HISTORY*/
  int citemode = 0;
  int cite_ystart = 1000000,
      cite_yend = -1,
      cite_y;
  int inverse;
  int loop = 1;

  char hline0[128], hline1[128], *hline;
  static int hit=0;

  /* Find out how big a window we must open. */
  y = us->y2;

  if (st == (WIN *)0 || (st && tempst)) y--;

  /* Open a window. */ 
  b_us = wopen(0, 0, us->x2, y, 0, us->attr, COLFG(us->color),
		COLBG(us->color), 0, 0, 0);
  wcursor(b_us, CNONE);

  /* Open a help line window. */
  b_st = wopen(0, y+1, us->x2, y+1, 0, st_attr, sfcolor, sbcolor, 0, 0, 1);
  b_st->doscroll = 0;
  b_st->wrap = 0;

  /* Make sure help line is as wide as window. */

#if _SEARCH_HISTORY
  /*
   * fmg 8/20/97
   * added /=Srch, \=CaseLess, and N=Next and changed rest of line...
   * Hope you like it :-)
   */
  strcpy(hline0, _("HISTORY: U=Up D=Down F=PgDn B=PgUp s=Srch S=CaseLess N=Next C=Cite ESC=Exit "));
#else
  strcpy(hline0, _("  SCROLL MODE    U=up D=down F=page-forward B=page-backward C=Cite ESC=exit "));
#endif /*_HIST_SEARCH*/

  if (b_st->xs < 127)
  	hline0[b_st->xs] = 0;
  hline = hline0;
  wprintf(b_st, hline);
  wredraw(b_st, 1);
  wflush();

  /* And do the job. */
  y = us->histlines;

  /* fmg 8/20/97
   * Needed for N)extSearch, keeps track of line on which current "hit"
   * is... we advance it to 'N'ext hit in find_next(). We start at "top"
   * of history stack
   */
  hit=0;
  
  drawhist(b_us, y, 0);

  while(loop) {
	c = wxgetch();
	switch(c) {
#if _SEARCH_HISTORY
	  /*  
	   * fmg 8/22/97