strerr.c
3.79 KB
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2010-2012, 2014-2017 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This library 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <syslog.h>
#include <mailutils/types.h>
#include <mailutils/nls.h>
#include <mailutils/io.h>
#include <mailutils/errno.h>
#include <mailutils/log.h>
#include <mailutils/stream.h>
#include <mailutils/stdstream.h>
#include <mailutils/filter.h>
#include <mailutils/syslog.h>
int
mu_stdstream_strerr_create (mu_stream_t *plogger, int type, int facility,
int priority, const char *tag,
const char *fname MU_ARG_UNUSED)
{
int rc;
mu_stream_t transport;
switch (type)
{
case MU_STRERR_STDERR:
{
int yes = 1;
mu_stream_t str;
rc = mu_stdio_stream_create (&str, MU_STDERR_FD, 0);
if (rc)
{
fprintf (stderr, _("%s: cannot open error stream: %s\n"),
tag ? tag : "<unknown>", mu_strerror (rc));
return MU_ERR_FAILURE;
}
/* Make sure 2 is not closed when str is destroyed.
FIXME: Actually I don't know if it is needed, but just
in case... */
mu_stream_ioctl (str, MU_IOCTL_FD, MU_IOCTL_FD_SET_BORROW, &yes);
if (!tag)
transport = str;
else
{
char *fltargs[3] = { "INLINE-COMMENT", };
mu_asprintf (&fltargs[1], "%s: ", tag);
fltargs[2] = NULL;
rc = mu_filter_create_args (&transport, str,
"INLINE-COMMENT",
2, (const char**)fltargs,
MU_FILTER_ENCODE, MU_STREAM_WRITE);
mu_stream_unref (str);
free (fltargs[1]);
if (rc)
{
fprintf (stderr,
_("%s: cannot open output filter stream: %s"),
tag ? tag : "<unknown>", mu_strerror (rc));
return MU_ERR_FAILURE;
}
mu_stream_set_buffer (transport, mu_buffer_line, 0);
}
}
break;
case MU_STRERR_SYSLOG:
openlog (tag, LOG_PID, facility);
rc = mu_syslog_stream_create (&transport, priority);
if (rc)
{
fprintf (stderr, _("%s: cannot create syslog stream: %s\n"),
tag ? tag : "<unknown>", mu_strerror (rc));
return MU_ERR_FAILURE;
}
break;
default:
fprintf (stderr, _("%s: cannot create error stream: %s\n"),
tag ? tag : "<unknown>", mu_strerror (EINVAL));
return EINVAL;
}
rc = mu_log_stream_create (plogger, transport);
mu_stream_unref (transport);
if (rc)
{
fprintf (stderr, _("%s: cannot open logger stream: %s\n"),
tag ? tag : "<unknown>", mu_strerror (rc));
return MU_ERR_FAILURE;
}
return 0;
}
int
mu_stdstream_strerr_setup (int type)
{
mu_stream_t str;
if (mu_stdstream_strerr_create (&str, type,
mu_log_facility, LOG_ERR,
MU_LOG_TAG (), NULL) == 0)
{
if (mu_log_print_severity)
{
int mode = MU_LOGMODE_SEVERITY;
mu_stream_ioctl (str, MU_IOCTL_LOGSTREAM,
MU_IOCTL_LOGSTREAM_SET_MODE, &mode);
}
if (mu_log_severity_threshold > MU_LOG_DEBUG)
mu_stream_ioctl (str, MU_IOCTL_LOGSTREAM,
MU_IOCTL_LOGSTREAM_SUPPRESS_SEVERITY,
&mu_log_severity_threshold);
mu_stream_destroy (&mu_strerr);
mu_strerr = str;
}
return 0;
}