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/*
NAME
strout - test whether mu_strout or mu_strerr is functioning.
DESCRIPTION
This test program reads data byte by byte from stdin using the stdio
input functions and sends them to mu_strout or mu_strerr using the
mu_stream_write function.
The program takes at most 30 seconds to run. If no input is arrived
or if EOF is not reached within that interval, the program exits with
code 3.
Both mu_strout and mu_strerr spring into existence the first time they
are used by any function of the stream family. Therefore, care is
taken not to call any mailutils I/O function either directly or
indirectly prior to the first write to the stream being tested.
OPTIONS
-err
Write to mu_strerr.
-reset
Call mu_stdstream_setup with the appropriate MU_STDSTREAM_RESET_
flag explicitly.
EXIT CODES
0 Success
1 Usage error
2 I/O error
3 Timeout
LICENSE
GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2011-2025 Free Software Foundation, Inc.
GNU Mailutils 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, or (at your option)
any later version.
GNU Mailutils 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 GNU Mailutils. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <mailutils/stream.h>
#include <mailutils/stdstream.h>
#include <mailutils/diag.h>
#include <mailutils/errno.h>
enum
{
EX_STROUT_OK,
EX_STROUT_USAGE,
EX_STROUT_FAIL,
EX_STROUT_TIMEOUT
};
void
sigalrm (int sig)
{
fprintf (stderr, "time out\n");
_exit (EX_STROUT_TIMEOUT);
}
int
main (int argc, char **argv)
{
mu_stream_t str = mu_strout;
int i;
signed char c;
for (i = 1; i < argc; i++)
{
char *arg = argv[i];
if (arg[0] == '-')
{
if (strcmp (arg, "-out") == 0)
str = mu_strout;
else if (strcmp (arg, "-err") == 0)
str = mu_strerr;
else if (strcmp (arg, "-reset") == 0)
{
if (str == mu_strout)
{
mu_stdstream_setup (MU_STDSTREAM_RESET_STROUT);
str = mu_strout;
}
else
{
mu_stdstream_setup (MU_STDSTREAM_RESET_STRERR);
str = mu_strerr;
}
}
else
{
fprintf (stderr, "%s: unrecognized option %s\n", argv[0], arg);
return EX_STROUT_USAGE;
}
}
}
signal(SIGALRM, sigalrm);
alarm (30);
while ((c = getchar ()) != EOF)
{
size_t n;
int rc = mu_stream_write (str, &c, 1, &n);
if (rc)
{
fprintf (stderr, "mu_stream_write: %s", mu_strerror (rc));
return EX_STROUT_FAIL;
}
if (n != 1)
{
fprintf (stderr, "wrote %zu bytes?\n", n);
return EX_STROUT_FAIL;
}
}
return EX_STROUT_OK;
}
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