smtp_trace.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2010-2012, 2014-2015 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 <string.h>
#include <errno.h>
#include <stdio.h>
#include <mailutils/errno.h>
#include <mailutils/error.h>
#include <mailutils/nls.h>
#include <mailutils/stream.h>
#include <mailutils/sys/smtp.h>
static const char *smtp_prefix[] = {
"S: ", "C: "
};
int
_mu_smtp_trace_enable (mu_smtp_t smtp)
{
int rc = 0;
mu_stream_t dstr, xstr;
if (!smtp->carrier)
{
MU_SMTP_FSET (smtp, _MU_SMTP_TRACE);
return 0;
}
rc = mu_dbgstream_create (&dstr, MU_DIAG_DEBUG);
if (rc)
mu_error (_("cannot create debug stream; transcript disabled: %s"),
mu_strerror (rc));
else
{
rc = mu_xscript_stream_create (&xstr, smtp->carrier, dstr,
smtp_prefix);
if (rc)
mu_error (_("cannot create transcript stream: %s"),
mu_strerror (rc));
else
{
mu_stream_unref (smtp->carrier);
smtp->carrier = xstr;
MU_SMTP_FSET (smtp, _MU_SMTP_TRACE);
}
}
return rc;
}
int
_mu_smtp_trace_disable (mu_smtp_t smtp)
{
mu_stream_t xstr = smtp->carrier;
mu_stream_t stream[2];
int rc;
if (!xstr)
return 0;
rc = mu_stream_ioctl (xstr, MU_IOCTL_TRANSPORT, MU_IOCTL_OP_GET, stream);
if (rc)
return rc;
smtp->carrier = stream[0];
mu_stream_destroy (&xstr);
MU_SMTP_FCLR (smtp, _MU_SMTP_TRACE);
return 0;
}
int
mu_smtp_trace (mu_smtp_t smtp, int op)
{
int trace_on = MU_SMTP_FISSET (smtp, _MU_SMTP_TRACE);
switch (op)
{
case MU_SMTP_TRACE_SET:
if (trace_on)
return MU_ERR_EXISTS;
return _mu_smtp_trace_enable (smtp);
case MU_SMTP_TRACE_CLR:
if (!trace_on)
return MU_ERR_NOENT;
return _mu_smtp_trace_disable (smtp);
case MU_SMTP_TRACE_QRY:
if (!trace_on)
return MU_ERR_NOENT;
return 0;
}
return EINVAL;
}
int
mu_smtp_trace_mask (mu_smtp_t smtp, int op, int lev)
{
switch (op)
{
case MU_SMTP_TRACE_SET:
smtp->flags |= MU_SMTP_XSCRIPT_MASK (lev);
break;
case MU_SMTP_TRACE_CLR:
smtp->flags &= ~MU_SMTP_XSCRIPT_MASK (lev);
break;
case MU_SMTP_TRACE_QRY:
if (smtp->flags & MU_SMTP_XSCRIPT_MASK (lev))
break;
return MU_ERR_NOENT;
default:
return EINVAL;
}
return 0;
}
int
_mu_smtp_xscript_level (mu_smtp_t smtp, int xlev)
{
if (mu_stream_ioctl (smtp->carrier, MU_IOCTL_XSCRIPTSTREAM,
MU_IOCTL_XSCRIPTSTREAM_LEVEL, &xlev) == 0)
return xlev;
return MU_XSCRIPT_NORMAL;
}