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/* message-type.c -- SSH message smob.
*
* Copyright (C) 2013-2021 Artyom V. Poptsov <poptsov.artyom@gmail.com>
*
* This file is part of Guile-SSH
*
* Guile-SSH 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.
*
* Guile-SSH 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 Guile-SSH. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <libguile.h>
#include <libssh/libssh.h>
#include <libssh/server.h>
#include "message-type.h"
#include "message-func.h"
#include "common.h"
static const char* GSSH_MESSAGE_TYPE_NAME = "message";
scm_t_bits message_tag; /* Smob tag. */
/* GC callbacks. */
static SCM
_mark (SCM message)
{
gssh_message_t* md = gssh_message_from_scm (message);
return md->session;
}
static size_t
_free (SCM message)
{
gssh_message_t* md = (gssh_message_t *) SCM_SMOB_DATA (message);
ssh_message_free (md->message);
return 0;
}
/* Printing procedure. */
static int
_print (SCM smob, SCM port, scm_print_state *pstate)
{
SCM msg_type = guile_ssh_message_get_type (smob);
scm_puts ("#<message ", port);
scm_display (msg_type, port);
scm_puts (" ", port);
scm_display (_scm_object_hex_address (smob), port);
scm_puts (">", port);
return 1;
}
SCM
_equalp (SCM x1, SCM x2)
{
return compare_objects(x1, x2, (converter_t) gssh_message_from_scm);
}
/* Predicates. */
SCM_DEFINE (guile_ssh_is_message_p,
"message?", 1, 0, 0,
(SCM x),
"\
Return #t if X a SSH message, #f otherwise.\
")
{
return scm_from_bool (SCM_SMOB_PREDICATE (message_tag, x));
}
/* Helper procedures. */
gssh_message_t*
make_gssh_message ()
{
return (gssh_message_t *) scm_gc_malloc (sizeof (gssh_message_t),
GSSH_MESSAGE_TYPE_NAME);
}
SCM
gssh_message_to_scm (const gssh_message_t* message)
{
SCM smob;
SCM_NEWSMOB (smob, message_tag, message);
return smob;
}
SCM
ssh_message_to_scm (const ssh_message message, SCM session)
{
gssh_message_t* message_data = make_gssh_message ();
message_data->message = message;
message_data->session = session;
return gssh_message_to_scm (message_data);
}
/* Convert X to a SSH message. */
gssh_message_t *
gssh_message_from_scm (SCM x)
{
scm_assert_smob_type (message_tag, x);
return (gssh_message_t *) SCM_SMOB_DATA (x);
}
/* Message smob initialization. */
void
init_message_type (void)
{
message_tag = scm_make_smob_type (GSSH_MESSAGE_TYPE_NAME,
sizeof (gssh_message_t));
set_smob_callbacks (message_tag, _mark, _free, _equalp, _print);
#include "message-type.x"
}
/* message-type.c ends here */
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