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/* Test of pty.h and openpty function.
Copyright (C) 2009-2023 Free Software Foundation, Inc.
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 3 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, see <https://www.gnu.org/licenses/>. */
/* Written by Simon Josefsson <simon@josefsson.org>, 2009
and Bruno Haible <bruno@clisp.org>, 2010. */
#include <config.h>
#include <pty.h>
#include "signature.h"
SIGNATURE_CHECK (openpty, int, (int *, int *, char *, struct termios const *,
struct winsize const *));
#include <stdio.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
int
main ()
{
{
#ifndef _WIN32
int master;
int slave;
/* Open a pseudo-terminal, as a master-slave pair. */
{
int res = openpty (&master, &slave, NULL, NULL, NULL);
if (res != 0)
{
fprintf (stderr, "openpty returned %d\n", res);
return 1;
}
}
/* Set the terminal characteristics.
On Linux or Mac OS X, they can be set on either the master or the slave;
the effect is the same. But on Solaris, they have to be set on the
master; tcgetattr on the slave fails. */
{
int tcfd = slave; /* You can try tcfd = master; here. */
struct termios attributes;
if (tcgetattr (tcfd, &attributes) < 0)
{
fprintf (stderr, "tcgetattr failed\n");
return 1;
}
/* Enable canonical processing, including erase. */
attributes.c_lflag |= ECHO | ICANON | ECHOE;
attributes.c_cc[VERASE] = '\177';
if (tcsetattr (tcfd, TCSANOW, &attributes) < 0)
{
fprintf (stderr, "tcsetattr failed\n");
return 1;
}
}
/* Write into the master side. */
{
static const char input[] = "Hello worst\177\177ld!\n";
if (write (master, input, strlen (input)) < (int) strlen (input))
{
fprintf (stderr, "write failed\n");
return 1;
}
}
/* Read from the slave side. */
{
char buf[100];
int res = read (slave, buf, sizeof (buf));
static const char expected[] = "Hello world!\n";
if (res < 0)
{
fprintf (stderr, "read failed\n");
return 1;
}
if (!(res == strlen (expected)
&& memcmp (buf, expected, strlen (expected)) == 0))
{
fprintf (stderr, "read result unexpected\n");
return 1;
}
}
/* Close the master side before the slave side gets closed.
This is necessary on Mac OS X 10.4.11. */
close (master);
#endif
}
return 0;
}
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