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/* session-type.c -- SSH session smob.
*
* Copyright (C) 2013, 2014, 2015, 2016 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 <string.h>
#include "session-type.h"
#include "channel-type.h"
#include "session-func.h"
#include "error.h"
#include "common.h"
static const char* GSSH_SESSION_TYPE_NAME = "session";
scm_t_bits session_tag; /* Smob tag. */
static SCM
_mark (SCM session_smob)
{
if (! gssh_session_freed_p (session_smob))
{
gssh_session_t *sd = gssh_session_from_scm (session_smob);
scm_gc_mark (sd->channels);
return sd->callbacks;
}
else
{
return SCM_BOOL_F;
}
}
/* Handle GC'ing of the session smob. */
static size_t
_free (SCM session)
{
if (! gssh_session_freed_p (session))
{
gssh_session_t *sd = gssh_session_from_scm (session);
guile_ssh_disconnect (session);
ssh_free (sd->ssh_session);
SCM_SET_SMOB_DATA (session, NULL);
}
return 0;
}
static SCM
_equalp (SCM x1, SCM x2)
{
return compare_objects(x1, x2, (converter_t) gssh_session_from_scm);
}
static int
_print (SCM session, SCM port, scm_print_state *pstate)
{
char *user = NULL;
char *host = NULL;
unsigned int ssh_port;
int res;
scm_puts ("#<session ", port);
if (! gssh_session_freed_p (session))
{
gssh_session_t *sd = gssh_session_from_scm (session);
res = ssh_options_get (sd->ssh_session, SSH_OPTIONS_USER, &user);
scm_display ((res == SSH_OK)
? scm_from_locale_string (user)
: SCM_UNDEFINED,
port);
ssh_string_free_char (user);
scm_putc ('@', port);
res = ssh_options_get (sd->ssh_session, SSH_OPTIONS_HOST, &host);
scm_display ((res == SSH_OK)
? scm_from_locale_string (host)
: SCM_UNDEFINED,
port);
ssh_string_free_char (host);
scm_putc (':', port);
res = ssh_options_get_port (sd->ssh_session, &ssh_port);
scm_display ((res == SSH_OK)
? scm_from_int (ssh_port)
: SCM_UNDEFINED,
port);
scm_puts (ssh_is_connected (sd->ssh_session) ? " (connected) "
: " (disconnected) ",
port);
}
else
{
scm_puts ("(freed) ", port);
}
scm_display (_scm_object_hex_address (session), port);
scm_putc ('>', port);
return 1;
}
/* Internal procedure.
Add a CHANNEL to the channel list of a SESSION. */
void
gssh_session_add_channel_x (gssh_session_t* session, SCM channel)
{
session->channels = scm_cons (channel, session->channels);
}
/* Internal procedure. */
void
gssh_session_del_channel_x (gssh_session_t* session, SCM channel)
{
session->channels = scm_delete (channel, session->channels);
}
/* Internal procedure. */
void
gssh_session_close_all_channels_x (gssh_session_t* session)
{
int32_t length;
while ((length = scm_to_int (scm_length (session->channels))) > 0) {
scm_close_port (scm_list_ref (session->channels, scm_from_int (0)));
}
}
/**
* Internal procedure.
*
* Create a Guile-SSH session object.
*/
gssh_session_t*
make_gssh_session ()
{
return (gssh_session_t *) scm_gc_malloc (sizeof (gssh_session_t),
GSSH_SESSION_TYPE_NAME);
}
/* Helper procedures */
SCM
gssh_session_to_scm (gssh_session_t* session)
{
SCM smob;
SCM_NEWSMOB (smob, session_tag, session);
return smob;
}
/* Convert SCM object to a SSH session */
gssh_session_t*
gssh_session_from_scm (SCM x)
#define FUNC_NAME "gssh_session_from_scm"
{
scm_assert_smob_type (session_tag, x);
return (gssh_session_t *) SCM_SMOB_DATA (x);
}
#undef FUNC_NAME
/**
* Check if a SESSION is freed.
*/
int
gssh_session_freed_p (SCM session)
{
return SCM_SMOBNUM (session) == 0;
}
/* session smob initialization. */
void
init_session_type (void)
{
session_tag = scm_make_smob_type (GSSH_SESSION_TYPE_NAME,
sizeof (gssh_session_t));
set_smob_callbacks (session_tag, _mark, _free, _equalp, _print);
#include "session-type.x"
}
/* session.c ends here */
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