kc3-lang/gnulib/tests/test-openpty.c

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• Hash : 7b089321
  Author :
  Date : 2025-01-01T09:24:36
  

  maint: run 'make update-copyright'
  

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• tests/test-openpty.c

• /* Test of pty.h and openpty function.
     Copyright (C) 2009-2025 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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