/*

 * This file is part of the SSH Library

 *

 * Copyright (c) 2012 by Aris Adamantiadis

 *

 * The SSH 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 2.1 of the License, or (at your

 * option) any later version.

 *

 * The SSH 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 the SSH Library; see the file COPYING.  If not, write to

 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,

 * MA 02111-1307, USA.

 */

#include "config.h"

#define LIBSSH_STATIC

#include "torture.h"

#include "libssh/libssh.h"

#include "libssh/priv.h"

#include "libssh/session.h"

#include <sys/types.h>

#include <pwd.h>

#include <errno.h>

#define BUFLEN 4096

static char buffer[BUFLEN];

static int sshd_setup(void **state)

{

    torture_setup_sshd_server(state, false);

    return 0;

}

static int sshd_teardown(void **state) {

    torture_teardown_sshd_server(state);

    return 0;

}

static int session_setup(void **state)

{

    struct torture_state *s = *state;

    struct passwd *pwd;

    int rc;

    pwd = getpwnam("bob");

    assert_non_null(pwd);

    rc = setuid(pwd->pw_uid);

    assert_return_code(rc, errno);

    s->ssh.session = torture_ssh_session(s,

                                         TORTURE_SSH_SERVER,

                                         NULL,

                                         TORTURE_SSH_USER_ALICE,

                                         NULL);

    assert_non_null(s->ssh.session);

    return 0;

}

static int session_teardown(void **state)

{

    struct torture_state *s = *state;

    ssh_disconnect(s->ssh.session);

    ssh_free(s->ssh.session);

    return 0;

}

static void torture_channel_read_error(void **state) {

    struct torture_state *s = *state;

    ssh_session session = s->ssh.session;

    ssh_channel channel;

    int rc;

    int fd;

    int i;

    channel = ssh_channel_new(session);

    assert_non_null(channel);

    rc = ssh_channel_open_session(channel);

    assert_ssh_return_code(session, rc);

    rc = ssh_channel_request_exec(channel, "hexdump -C /dev/urandom");

    assert_ssh_return_code(session, rc);

    /* send crap and for server to send us a disconnect */

    fd = ssh_get_fd(session);

    assert_true(fd > 2);

    rc = write(fd, "AAAA", 4);

    assert_int_equal(rc, 4);

    for (i=0;i<20;++i){

        rc = ssh_channel_read(channel,buffer,sizeof(buffer),0);

        if (rc == SSH_ERROR)

            break;

    }

#if OPENSSH_VERSION_MAJOR == 6 && OPENSSH_VERSION_MINOR >= 7

    /* With openssh 6.7 this doesn't produce and error anymore */

    assert_ssh_return_code(session, rc);

#else

    assert_ssh_return_code_equal(session, rc, SSH_ERROR);

#endif

    ssh_channel_free(channel);

}

int torture_run_tests(void) {

    int rc;

    struct CMUnitTest tests[] = {

        cmocka_unit_test_setup_teardown(torture_channel_read_error,

                                        session_setup,

                                        session_teardown),

    };

    ssh_init();

    torture_filter_tests(tests);

    rc = cmocka_run_group_tests(tests, sshd_setup, sshd_teardown);

    ssh_finalize();

    return rc;

}