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picocom.c
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/* vi: set sw=4 ts=4:
*
* picocom.c
*
* simple dumb-terminal program. Helps you manually configure and test
* stuff like modems, devices w. serial ports etc.
*
* by Nick Patavalis ([email protected])
*
* 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.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <assert.h>
#include <stdarg.h>
#include <signal.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <limits.h>
#ifdef USE_FLOCK
#include <sys/file.h>
#endif
#ifdef LINENOISE
#include <dirent.h>
#include <libgen.h>
#endif
#define _GNU_SOURCE
#include <getopt.h>
#include "fdio.h"
#include "split.h"
#include "term.h"
#ifdef LINENOISE
#include "linenoise-1.0/linenoise.h"
#endif
/**********************************************************************/
/* parity modes names */
const char *parity_str[] = {
[P_NONE] = "none",
[P_EVEN] = "even",
[P_ODD] = "odd",
[P_MARK] = "mark",
[P_SPACE] = "space",
};
/* flow control modes names */
const char *flow_str[] = {
[FC_NONE] = "none",
[FC_RTSCTS] = "RTS/CTS",
[FC_XONXOFF] = "xon/xoff",
[FC_OTHER] = "other",
};
/**********************************************************************/
/* control-key to printable character (lowcase) */
#define KEYC(k) ((k) | 0x60)
/* printable character to control-key */
#define CKEY(c) ((c) & 0x1f)
#define KEY_EXIT CKEY('x') /* exit picocom */
#define KEY_QUIT CKEY('q') /* exit picocom without reseting port */
#define KEY_PULSE CKEY('p') /* pulse DTR */
#define KEY_TOGGLE CKEY('t') /* toggle DTR */
#define KEY_BAUD CKEY('b') /* set baudrate */
#define KEY_BAUD_UP CKEY('u') /* increase baudrate (up) */
#define KEY_BAUD_DN CKEY('d') /* decrase baudrate (down) */
#define KEY_FLOW CKEY('f') /* change flowcntrl mode */
#define KEY_PARITY CKEY('y') /* change parity mode */
#define KEY_BITS CKEY('i') /* change number of databits */
#define KEY_STOP CKEY('j') /* change number of stopbits */
#define KEY_LECHO CKEY('c') /* toggle local echo */
#define KEY_STATUS CKEY('v') /* show program options */
#define KEY_HELP CKEY('h') /* show help (same as [C-k]) */
#define KEY_KEYS CKEY('k') /* show available command keys */
#define KEY_SEND CKEY('s') /* send file */
#define KEY_RECEIVE CKEY('r') /* receive file */
#define KEY_BREAK CKEY('\\') /* break */
/**********************************************************************/
/* implemented caracter mappings */
#define M_CRLF (1 << 0) /* map CR --> LF */
#define M_CRCRLF (1 << 1) /* map CR --> CR + LF */
#define M_IGNCR (1 << 2) /* map CR --> <nothing> */
#define M_LFCR (1 << 3) /* map LF --> CR */
#define M_LFCRLF (1 << 4) /* map LF --> CR + LF */
#define M_IGNLF (1 << 5) /* map LF --> <nothing> */
#define M_DELBS (1 << 6) /* map DEL --> BS */
#define M_BSDEL (1 << 7) /* map BS --> DEL */
#define M_NFLAGS 8
/* default character mappings */
#define M_I_DFL 0
#define M_O_DFL 0
#define M_E_DFL (M_DELBS | M_CRCRLF)
/* character mapping names */
struct map_names_s {
char *name;
int flag;
} map_names[] = {
{ "crlf", M_CRLF },
{ "crcrlf", M_CRCRLF },
{ "igncr", M_IGNCR },
{ "lfcr", M_LFCR },
{ "lfcrlf", M_LFCRLF },
{ "ignlf", M_IGNLF },
{ "delbs", M_DELBS },
{ "bsdel", M_BSDEL },
/* Sentinel */
{ NULL, 0 }
};
int
parse_map (char *s)
{
char *m, *t;
int f, flags, i;
flags = 0;
while ( (t = strtok(s, ", \t")) ) {
for (i=0; (m = map_names[i].name); i++) {
if ( ! strcmp(t, m) ) {
f = map_names[i].flag;
break;
}
}
if ( m ) flags |= f;
else { flags = -1; break; }
s = NULL;
}
return flags;
}
void
print_map (int flags)
{
int i;
for (i = 0; i < M_NFLAGS; i++)
if ( flags & (1 << i) )
printf("%s,", map_names[i].name);
printf("\n");
}
/**********************************************************************/
struct {
char port[128];
int baud;
enum flowcntrl_e flow;
enum parity_e parity;
int databits;
int stopbits;
int lecho;
int noinit;
int noreset;
#if defined (UUCP_LOCK_DIR) || defined (USE_FLOCK)
int nolock;
#endif
unsigned char escape;
char send_cmd[128];
char receive_cmd[128];
int imap;
int omap;
int emap;
} opts = {
.port = "",
.baud = 9600,
.flow = FC_NONE,
.parity = P_NONE,
.databits = 8,
.stopbits = 1,
.lecho = 0,
.noinit = 0,
.noreset = 0,
#if defined (UUCP_LOCK_DIR) || defined (USE_FLOCK)
.nolock = 0,
#endif
.escape = CKEY('a'),
.send_cmd = "sz -vv",
.receive_cmd = "rz -vv -E",
.imap = M_I_DFL,
.omap = M_O_DFL,
.emap = M_E_DFL
};
int sig_exit = 0;
#define STO STDOUT_FILENO
#define STI STDIN_FILENO
int tty_fd;
#ifndef TTY_Q_SZ
#define TTY_Q_SZ 256
#endif
struct tty_q {
int len;
unsigned char buff[TTY_Q_SZ];
} tty_q;
#define TTY_RD_SZ 128
int tty_write_sz;
#define TTY_WRITE_SZ_DIV 10
#define TTY_WRITE_SZ_MIN 8
#define set_tty_write_sz(baud) \
do { \
tty_write_sz = (baud) / TTY_WRITE_SZ_DIV; \
if ( tty_write_sz < TTY_WRITE_SZ_MIN ) \
tty_write_sz = TTY_WRITE_SZ_MIN; \
} while (0)
/**********************************************************************/
#ifdef UUCP_LOCK_DIR
/* use HDB UUCP locks .. see
* <http://www.faqs.org/faqs/uucp-internals> for details
*/
char lockname[_POSIX_PATH_MAX] = "";
int
uucp_lockname(const char *dir, const char *file)
{
char *p, *cp;
struct stat sb;
if ( ! dir || *dir == '\0' || stat(dir, &sb) != 0 )
return -1;
/* cut-off initial "/dev/" from file-name */
p = strchr(file + 1, '/');
p = p ? p + 1 : (char *)file;
/* replace '/'s with '_'s in what remains (after making a copy) */
p = cp = strdup(p);
do { if ( *p == '/' ) *p = '_'; } while(*p++);
/* build lockname */
snprintf(lockname, sizeof(lockname), "%s/LCK..%s", dir, cp);
/* destroy the copy */
free(cp);
return 0;
}
int
uucp_lock(void)
{
int r, fd, pid;
char buf[16];
mode_t m;
if ( lockname[0] == '\0' ) return 0;
fd = open(lockname, O_RDONLY);
if ( fd >= 0 ) {
r = read(fd, buf, sizeof(buf));
close(fd);
/* if r == 4, lock file is binary (old-style) */
pid = (r == 4) ? *(int *)buf : strtol(buf, NULL, 10);
if ( pid > 0
&& kill((pid_t)pid, 0) < 0
&& errno == ESRCH ) {
/* stale lock file */
printf("Removing stale lock: %s\n", lockname);
sleep(1);
unlink(lockname);
} else {
lockname[0] = '\0';
errno = EEXIST;
return -1;
}
}
/* lock it */
m = umask(022);
fd = open(lockname, O_WRONLY|O_CREAT|O_EXCL, 0666);
if ( fd < 0 ) { lockname[0] = '\0'; return -1; }
umask(m);
snprintf(buf, sizeof(buf), "%04d\n", getpid());
write(fd, buf, strlen(buf));
close(fd);
return 0;
}
int
uucp_unlock(void)
{
if ( lockname[0] ) unlink(lockname);
return 0;
}
#endif /* of UUCP_LOCK_DIR */
/**********************************************************************/
void
fatal (const char *format, ...)
{
char *s, buf[256];
va_list args;
int len;
term_reset(STO);
term_reset(STI);
va_start(args, format);
len = vsnprintf(buf, sizeof(buf), format, args);
buf[sizeof(buf) - 1] = '\0';
va_end(args);
s = "\r\nFATAL: ";
writen_ni(STO, s, strlen(s));
writen_ni(STO, buf, len);
s = "\r\n";
writen_ni(STO, s, strlen(s));
/* wait a bit for output to drain */
sleep(1);
#ifdef UUCP_LOCK_DIR
uucp_unlock();
#endif
exit(EXIT_FAILURE);
}
/**********************************************************************/
#ifndef LINENOISE
char *
read_filename (void)
{
char fname[_POSIX_PATH_MAX];
int r;
fd_printf(STO, "\r\n*** file: ");
r = fd_readline(STI, STO, fname, sizeof(fname));
fd_printf(STO, "\r\n");
if ( r < 0 )
return NULL;
else
return strdup(fname);
}
int
read_baud (void)
{
char baudstr[9], *ep;
int baud = -1, r;
do {
fd_printf(STO, "\r\n*** baud: ");
r = fd_readline(STI, STO, baudstr, sizeof(baudstr));
fd_printf(STO, "\r\n");
if ( r < 0 )
break;
baud = strtol(baudstr, &ep, 0);
if ( ! ep || *ep != '\0' || ! term_baud_ok(baud) || baud == 0 ) {
fd_printf(STO, "*** Invalid baudrate!");
baud = -1;
}
} while (baud < 0);
return baud;
}
#else /* LINENOISE defined */
void
file_completion_cb (const char *buf, linenoiseCompletions *lc)
{
DIR *dirp;
struct dirent *dp;
char *basec, *basen, *dirc, *dirn;
int baselen, dirlen;
char *fullpath;
struct stat filestat;
basec = strdup(buf);
dirc = strdup(buf);
dirn = dirname(dirc);
dirlen = strlen(dirn);
basen = basename(basec);
baselen = strlen(basen);
dirp = opendir(dirn);
if (dirp) {
while ((dp = readdir(dirp)) != NULL) {
if (strncmp(basen, dp->d_name, baselen) == 0) {
/* add 2 extra bytes for possible / in middle & at end */
fullpath = (char *) malloc(strlen(dp->d_name) + dirlen + 3);
strcpy(fullpath, dirn);
if (fullpath[dirlen-1] != '/')
strcat(fullpath, "/");
strcat(fullpath, dp->d_name);
if (stat(fullpath, &filestat) == 0) {
if (S_ISDIR(filestat.st_mode)) {
strcat(fullpath, "/");
}
linenoiseAddCompletion(lc,fullpath);
}
free(fullpath);
}
}
closedir(dirp);
}
free(basec);
free(dirc);
}
static char *history_file_path = NULL;
void
init_history (void)
{
char *home_directory;
home_directory = getenv("HOME");
if (home_directory) {
history_file_path = malloc(strlen(home_directory) + 2 +
strlen(HISTFILE));
strcpy(history_file_path, home_directory);
if (home_directory[strlen(home_directory)-1] != '/') {
strcat(history_file_path, "/");
}
strcat(history_file_path, HISTFILE);
linenoiseHistoryLoad(history_file_path);
}
}
void
cleanup_history (void)
{
if (history_file_path)
free(history_file_path);
}
void
add_history (char *fname)
{
linenoiseHistoryAdd(fname);
if (history_file_path)
linenoiseHistorySave(history_file_path);
}
char *
read_filename (void)
{
char *fname;
linenoiseSetCompletionCallback(file_completion_cb);
fd_printf(STO, "\r\n");
fname = linenoise("*** file: ");
fd_printf(STO, "\r");
linenoiseSetCompletionCallback(NULL);
if (fname != NULL)
add_history(fname);
return fname;
}
int
read_baud (void)
{
char *baudstr, *ep;
int baud = -1;
do {
fd_printf(STO, "\r\n");
baudstr = linenoise("*** baud: ");
fd_printf(STO, "\r");
if ( baudstr == NULL )
break;
baud = strtol(baudstr, &ep, 0);
if ( ! ep || *ep != '\0' || ! term_baud_ok(baud) || baud == 0 ) {
fd_printf(STO, "*** Invalid baudrate!");
baud = -1;
}
free(baudstr);
} while (baud < 0);
if (baudstr != NULL)
add_history(baudstr);
return baud;
}
#endif /* of ifndef LINENOISE */
/**********************************************************************/
/* maximum number of chars that can replace a single characted
due to mapping */
#define M_MAXMAP 4
int
do_map (char *b, int map, char c)
{
int n;
switch (c) {
case '\x7f':
/* DEL mapings */
if ( map & M_DELBS ) {
b[0] = '\x08'; n = 1;
} else {
b[0] = c; n = 1;
}
break;
case '\x08':
/* BS mapings */
if ( map & M_BSDEL ) {
b[0] = '\x7f'; n = 1;
} else {
b[0] = c; n = 1;
}
break;
case '\x0d':
/* CR mappings */
if ( map & M_CRLF ) {
b[0] = '\x0a'; n = 1;
} else if ( map & M_CRCRLF ) {
b[0] = '\x0d'; b[1] = '\x0a'; n = 2;
} else if ( map & M_IGNCR ) {
n = 0;
} else {
b[0] = c; n = 1;
}
break;
case '\x0a':
/* LF mappings */
if ( map & M_LFCR ) {
b[0] = '\x0d'; n = 1;
} else if ( map & M_LFCRLF ) {
b[0] = '\x0d'; b[1] = '\x0a'; n = 2;
} else if ( map & M_IGNLF ) {
n = 0;
} else {
b[0] = c; n = 1;
}
break;
default:
b[0] = c; n = 1;
break;
}
return n;
}
void
map_and_write (int fd, int map, char c)
{
char b[M_MAXMAP];
int n;
n = do_map(b, map, c);
if ( n )
if ( writen_ni(fd, b, n) < n )
fatal("write to stdout failed: %s", strerror(errno));
}
/**********************************************************************/
int
baud_up (int baud)
{
return term_baud_up(baud);
}
int
baud_down (int baud)
{
int nb;
nb = term_baud_down(baud);
if (nb == 0)
nb = baud;
return nb;
}
int
flow_next (int flow)
{
switch(flow) {
case FC_NONE:
flow = FC_RTSCTS;
break;
case FC_RTSCTS:
flow = FC_XONXOFF;
break;
case FC_XONXOFF:
flow = FC_NONE;
break;
default:
flow = FC_NONE;
break;
}
return flow;
}
int
parity_next (int parity)
{
switch(parity) {
case P_NONE:
parity = P_EVEN;
break;
case P_EVEN:
parity = P_ODD;
break;
case P_ODD:
parity = P_NONE;
break;
default:
parity = P_NONE;
break;
}
return parity;
}
int
bits_next (int bits)
{
bits++;
if (bits > 8) bits = 5;
return bits;
}
int
stopbits_next (int bits)
{
bits++;
if (bits > 2) bits = 1;
return bits;
}
void
show_status (int dtr_up)
{
int baud, bits, stopbits, mctl;
enum flowcntrl_e flow;
enum parity_e parity;
term_refresh(tty_fd);
baud = term_get_baudrate(tty_fd, NULL);
flow = term_get_flowcntrl(tty_fd);
parity = term_get_parity(tty_fd);
bits = term_get_databits(tty_fd);
stopbits = term_get_stopbits(tty_fd);
fd_printf(STO, "\r\n");
if ( baud != opts.baud ) {
fd_printf(STO, "*** baud: %d (%d)\r\n", opts.baud, baud);
} else {
fd_printf(STO, "*** baud: %d\r\n", opts.baud);
}
if ( flow != opts.flow ) {
fd_printf(STO, "*** flow: %s (%s)\r\n",
flow_str[opts.flow], flow_str[flow]);
} else {
fd_printf(STO, "*** flow: %s\r\n", flow_str[opts.flow]);
}
if ( parity != opts.parity ) {
fd_printf(STO, "*** parity: %s (%s)\r\n",
parity_str[opts.parity], parity_str[parity]);
} else {
fd_printf(STO, "*** parity: %s\r\n", parity_str[opts.parity]);
}
if ( bits != opts.databits ) {
fd_printf(STO, "*** databits: %d (%d)\r\n", opts.databits, bits);
} else {
fd_printf(STO, "*** databits: %d\r\n", opts.databits);
}
if ( stopbits != opts.stopbits ) {
fd_printf(STO, "*** stopbits: %d (%d)\r\n", opts.stopbits, stopbits);
} else {
fd_printf(STO, "*** stopbits: %d\r\n", opts.stopbits);
}
mctl = term_get_mctl(tty_fd);
if (mctl >= 0 && mctl != MCTL_UNAVAIL) {
if ( ((mctl & MCTL_DTR) ? 1 : 0) == dtr_up )
fd_printf(STO, "*** dtr: %s\r\n", dtr_up ? "up" : "down");
else
fd_printf(STO, "*** dtr: %s (%s)\r\n",
dtr_up ? "up" : "down",
(mctl & MCTL_DTR) ? "up" : "down");
fd_printf(STO, "*** mctl: ");
fd_printf(STO, "DTR:%c DSR:%c DCD:%c RTS:%c CTS:%c RI:%c\r\n",
(mctl & MCTL_DTR) ? '1' : '0',
(mctl & MCTL_DSR) ? '1' : '0',
(mctl & MCTL_DCD) ? '1' : '0',
(mctl & MCTL_RTS) ? '1' : '0',
(mctl & MCTL_CTS) ? '1' : '0',
(mctl & MCTL_RI) ? '1' : '0');
} else {
fd_printf(STO, "*** dtr: %s\r\n", dtr_up ? "up" : "down");
}
}
void
show_keys()
{
#ifndef NO_HELP
fd_printf(STO, "\r\n");
fd_printf(STO, "*** Picocom commands (all prefixed by [C-%c])\r\n",
KEYC(opts.escape));
fd_printf(STO, "\r\n");
fd_printf(STO, "*** [C-%c] : Exit picocom\r\n",
KEYC(KEY_EXIT));
fd_printf(STO, "*** [C-%c] : Exit without reseting serial port\r\n",
KEYC(KEY_QUIT));
fd_printf(STO, "*** [C-%c] : Set baudrate\r\n",
KEYC(KEY_BAUD));
fd_printf(STO, "*** [C-%c] : Increase baudrate (baud-up)\r\n",
KEYC(KEY_BAUD_UP));
fd_printf(STO, "*** [C-%c] : Decrease baudrate (baud-down)\r\n",
KEYC(KEY_BAUD_DN));;
fd_printf(STO, "*** [C-%c] : Change number of databits\r\n",
KEYC(KEY_BITS));
fd_printf(STO, "*** [C-%c] : Change number of stopbits\r\n",
KEYC(KEY_STOP));
fd_printf(STO, "*** [C-%c] : Change flow-control mode\r\n",
KEYC(KEY_FLOW));
fd_printf(STO, "*** [C-%c] : Change parity mode\r\n",
KEYC(KEY_PARITY));
fd_printf(STO, "*** [C-%c] : Pulse DTR\r\n",
KEYC(KEY_PULSE));
fd_printf(STO, "*** [C-%c] : Toggle DTR\r\n",
KEYC(KEY_TOGGLE));
fd_printf(STO, "*** [C-%c] : Send break\r\n",
KEYC(KEY_BREAK));
fd_printf(STO, "*** [C-%c] : Toggle local echo\r\n",
KEYC(KEY_LECHO));
fd_printf(STO, "*** [C-%c] : Send file\r\n",
KEYC(KEY_SEND));
fd_printf(STO, "*** [C-%c] : Receive file\r\n",
KEYC(KEY_RECEIVE));
fd_printf(STO, "*** [C-%c] : Show port settings\r\n",
KEYC(KEY_STATUS));
fd_printf(STO, "*** [C-%c] : Show this message\r\n",
KEYC(KEY_HELP));
fd_printf(STO, "\r\n");
#else /* defined NO_HELP */
fd_printf(STO, "*** Help is disabled.\r\n");
#endif /* of NO_HELP */
}
/**********************************************************************/
#define RUNCMD_ARGS_MAX 32
#define RUNCMD_EXEC_FAIL 126
void
establish_child_signal_handlers (void)
{
struct sigaction dfl_action;
/* Set up the structure to specify the default action. */
dfl_action.sa_handler = SIG_DFL;
sigemptyset (&dfl_action.sa_mask);
dfl_action.sa_flags = 0;
sigaction (SIGINT, &dfl_action, NULL);
sigaction (SIGTERM, &dfl_action, NULL);
}
int
run_cmd(int fd, const char *cmd, const char *args_extra)
{
pid_t pid;
sigset_t sigm, sigm_old;
/* block signals, let child establish its own handlers */
sigemptyset(&sigm);
sigaddset(&sigm, SIGTERM);
sigprocmask(SIG_BLOCK, &sigm, &sigm_old);
pid = fork();
if ( pid < 0 ) {
sigprocmask(SIG_SETMASK, &sigm_old, NULL);
fd_printf(STO, "*** cannot fork: %s ***\r\n", strerror(errno));
return -1;
} else if ( pid ) {
/* father: picocom */
int status, r;
/* reset the mask */
sigprocmask(SIG_SETMASK, &sigm_old, NULL);
/* wait for child to finish */
do {
r = waitpid(pid, &status, 0);
} while ( r < 0 && errno == EINTR );
/* reset terminal (back to raw mode) */
term_apply(STI, 0);
/* check and report child return status */
if ( WIFEXITED(status) ) {
fd_printf(STO, "\r\n*** exit status: %d ***\r\n",
WEXITSTATUS(status));
return WEXITSTATUS(status);
} else if ( WIFSIGNALED(status) ) {
fd_printf(STO, "\r\n*** killed by signal: %d ***\r\n",
WTERMSIG(status));
return -1;
} else {
fd_printf(STO, "\r\n*** abnormal termination: 0x%x ***\r\n", r);
return -1;
}
} else {
/* child: external program */
long fl;
int argc;
char *argv[RUNCMD_ARGS_MAX + 1];
int r;
/* unmanage terminal, and reset it to canonical mode */
term_remove(STI);
/* unmanage serial port fd, without reset */
term_erase(fd);
/* set serial port fd to blocking mode */
fl = fcntl(fd, F_GETFL);
fl &= ~O_NONBLOCK;
fcntl(fd, F_SETFL, fl);
/* connect stdin and stdout to serial port */
close(STI);
close(STO);
dup2(fd, STI);
dup2(fd, STO);
/* build command arguments vector */
argc = 0;
r = split_quoted(cmd, &argc, argv, RUNCMD_ARGS_MAX);
if ( r < 0 ) {
fd_printf(STDERR_FILENO, "Cannot parse command\n");
exit(RUNCMD_EXEC_FAIL);
}
r = split_quoted(args_extra, &argc, argv, RUNCMD_ARGS_MAX);
if ( r < 0 ) {
fd_printf(STDERR_FILENO, "Cannot parse extra args\n");
exit(RUNCMD_EXEC_FAIL);
}
if ( argc < 1 ) {
fd_printf(STDERR_FILENO, "No command given\n");
exit(RUNCMD_EXEC_FAIL);
}
argv[argc] = NULL;
/* run extenral command */
fd_printf(STDERR_FILENO, "$ %s %s\n", cmd, args_extra);
establish_child_signal_handlers();
sigprocmask(SIG_SETMASK, &sigm_old, NULL);
execvp(argv[0], argv);
fd_printf(STDERR_FILENO, "exec: %s\n", strerror(errno));
exit(RUNCMD_EXEC_FAIL);
}
}
/**********************************************************************/
/* Process command key. Returns non-zero if command results in picocom
exit, zero otherwise. */
int
do_command (unsigned char c)
{
static int dtr_up = 0;
int newbaud, newflow, newparity, newbits, newstopbits;
const char *xfr_cmd;
char *fname;
int r;
switch (c) {
case KEY_EXIT:
return 1;
case KEY_QUIT:
term_set_hupcl(tty_fd, 0);
term_flush(tty_fd);
term_apply(tty_fd, 1);
term_erase(tty_fd);
return 1;
case KEY_STATUS:
show_status(dtr_up);
break;
case KEY_HELP:
case KEY_KEYS:
show_keys();
break;
case KEY_PULSE:
fd_printf(STO, "\r\n*** pulse DTR ***\r\n");
if ( term_pulse_dtr(tty_fd) < 0 )
fd_printf(STO, "*** FAILED\r\n");
break;
case KEY_TOGGLE:
if ( dtr_up )
r = term_lower_dtr(tty_fd);
else
r = term_raise_dtr(tty_fd);
if ( r >= 0 ) dtr_up = ! dtr_up;
fd_printf(STO, "\r\n*** DTR: %s ***\r\n",
dtr_up ? "up" : "down");
break;
case KEY_BAUD:
case KEY_BAUD_UP:
case KEY_BAUD_DN:
if ( c== KEY_BAUD) {
newbaud = read_baud();
if ( newbaud < 0 ) {
fd_printf(STO, "*** cannot read baudrate ***\r\n");
break;
}
opts.baud = newbaud;
} else if (c == KEY_BAUD_UP) {
opts.baud = baud_up(opts.baud);
} else {
opts.baud = baud_down(opts.baud);
}
term_set_baudrate(tty_fd, opts.baud);
tty_q.len = 0; term_flush(tty_fd);
term_apply(tty_fd, 1);
newbaud = term_get_baudrate(tty_fd, NULL);
if ( opts.baud != newbaud ) {
fd_printf(STO, "\r\n*** baud: %d (%d) ***\r\n",
opts.baud, newbaud);
} else {
fd_printf(STO, "\r\n*** baud: %d ***\r\n", opts.baud);
}
set_tty_write_sz(newbaud);
break;
case KEY_FLOW:
opts.flow = flow_next(opts.flow);
term_set_flowcntrl(tty_fd, opts.flow);
tty_q.len = 0; term_flush(tty_fd);
term_apply(tty_fd, 1);
newflow = term_get_flowcntrl(tty_fd);
if ( opts.flow != newflow ) {
fd_printf(STO, "\r\n*** flow: %s (%s) ***\r\n",
flow_str[opts.flow], flow_str[newflow]);
} else {
fd_printf(STO, "\r\n*** flow: %s ***\r\n",
flow_str[opts.flow]);
}
break;
case KEY_PARITY:
opts.parity = parity_next(opts.parity);
term_set_parity(tty_fd, opts.parity);
tty_q.len = 0; term_flush(tty_fd);
term_apply(tty_fd, 1);
newparity = term_get_parity(tty_fd);
if (opts.parity != newparity ) {
fd_printf(STO, "\r\n*** parity: %s (%s) ***\r\n",
parity_str[opts.parity],
parity_str[newparity]);
} else {
fd_printf(STO, "\r\n*** parity: %s ***\r\n",
parity_str[opts.parity]);
}
break;
case KEY_BITS:
opts.databits = bits_next(opts.databits);
term_set_databits(tty_fd, opts.databits);
tty_q.len = 0; term_flush(tty_fd);
term_apply(tty_fd, 1);
newbits = term_get_databits(tty_fd);
if (opts.databits != newbits ) {