int
main(int argc, const char* argv[])
{
struct vsf_session the_session =
{
/* Control connection */
0, 0, 0,
/* Data connection */
-1, 0, -1, 0, 0, 0, 0,
/* Login */
1, INIT_MYSTR, INIT_MYSTR,
/* Protocol state */
0, 1, INIT_MYSTR, 0, 0,
/* Session state */
0,
/* Userids */
-1, -1, -1,
/* Pre-chroot() cache */
INIT_MYSTR, INIT_MYSTR, INIT_MYSTR, INIT_MYSTR, 1,
/* Logging */
-1, -1, INIT_MYSTR, 0, 0, 0, INIT_MYSTR, 0,
/* Buffers */
INIT_MYSTR, INIT_MYSTR,
/* Parent <-> child comms */
-1, -1,
/* Number of clients */
0, 0,
/* Home directory */
INIT_MYSTR,
/* Secure connection state */
0, 0, 0, 0, 0, 0, -1, -1
};
int config_specified = 0;
const char* p_config_name = VSFTP_DEFAULT_CONFIG;
/* Zero or one argument supported. If one argument is passed, it is the
* path to the config file
*/
if (argc > 2)
{
die("vsftpd: too many arguments (I take an optional config file only)");
}
else if (argc == 0)
{
die("vsftpd: missing argv[0]");
}
if (argc == 2)
{
if (!vsf_sysutil_strcmp(argv[1], "-v"))
{
vsf_exit("vsftpd: version " VSF_VERSION "\n");
}
p_config_name = argv[1];
config_specified = 1;
}
/* This might need to open /dev/zero on systems lacking MAP_ANON. Needs
* to be done early (i.e. before config file parse, which may use
* anonymous pages
*/
vsf_sysutil_map_anon_pages_init();
/* Parse config file if it's there */
{
struct vsf_sysutil_statbuf* p_statbuf = 0;
int retval = vsf_sysutil_stat(p_config_name, &p_statbuf);
if (!vsf_sysutil_retval_is_error(retval))
{
vsf_parseconf_load_file(p_config_name, 1);
}
else if (config_specified)
{
die2("vsftpd: cannot open config file:", p_config_name);
}
vsf_sysutil_free(p_statbuf);
}
if (!tunable_run_as_launching_user)
{
/* Just get out unless we start with requisite privilege */
die_unless_privileged();
}
if (tunable_setproctitle_enable)
{
/* Warning -- warning -- may nuke argv, environ */
vsf_sysutil_setproctitle_init(argc, argv);
}
/* Initialize the SSL system here if needed - saves the overhead of each
* child doing this itself.
*/
if (tunable_ssl_enable)
{
ssl_init(&the_session);
}
if (tunable_listen || tunable_listen_ipv6)
{
/* Standalone mode */
struct vsf_client_launch ret = vsf_standalone_main();
the_session.num_clients = ret.num_children;
the_session.num_this_ip = ret.num_this_ip;
}
/* Sanity checks - exit with a graceful error message if our STDIN is not
* a socket. Also check various config options don't collide.
*/
do_sanity_checks();
/* Initializes session globals - e.g. IP addr's etc. */
session_init(&the_session);
/* Set up "environment", e.g. process group etc. */
env_init();
/* Set up logging - must come after global init because we need the remote
* address to convert into text
*/
vsf_log_init(&the_session);
str_alloc_text(&the_session.remote_ip_str,
vsf_sysutil_inet_ntop(the_session.p_remote_addr));
/* Set up options on the command socket */
vsf_cmdio_sock_setup();
if (tunable_setproctitle_enable)
{
vsf_sysutil_set_proctitle_prefix(&the_session.remote_ip_str);
vsf_sysutil_setproctitle("connected");
}
/* We might chroot() very soon (one process model), so we need to open
* any required config files here.
*/
if (tunable_tcp_wrappers)
{
the_session.tcp_wrapper_ok = vsf_tcp_wrapper_ok(VSFTP_COMMAND_FD);
}
{
const char* p_load_conf = vsf_sysutil_getenv("VSFTPD_LOAD_CONF");
if (p_load_conf)
{
vsf_parseconf_load_file(p_load_conf, 1);
}
}
/* SSL may have been enabled by a per-IP configuration.. */
if (tunable_ssl_enable)
{
ssl_init(&the_session);
}
if (tunable_deny_email_enable)
{
int retval = str_fileread(&the_session.banned_email_str,
tunable_banned_email_file, VSFTP_CONF_FILE_MAX);
if (vsf_sysutil_retval_is_error(retval))
{
die2("cannot open anon e-mail list file:", tunable_banned_email_file);
}
}
if (tunable_banner_file)
{
int retval = str_fileread(&the_session.banner_str, tunable_banner_file,
VSFTP_CONF_FILE_MAX);
if (vsf_sysutil_retval_is_error(retval))
{
die2("cannot open banner file:", tunable_banner_file);
}
}
if (tunable_secure_email_list_enable)
{
int retval = str_fileread(&the_session.email_passwords_str,
tunable_email_password_file,
VSFTP_CONF_FILE_MAX);
if (vsf_sysutil_retval_is_error(retval))
{
die2("cannot open email passwords file:", tunable_email_password_file);
}
}
/* Special case - can force one process model if we've got a setup
* needing _no_ privs
*/
if (!tunable_local_enable && !tunable_connect_from_port_20 &&
!tunable_chown_uploads)
{
tunable_one_process_model = 1;
}
if (tunable_run_as_launching_user)
{
tunable_one_process_model = 1;
if (!vsf_sysutil_running_as_root())
{
tunable_connect_from_port_20 = 0;
tunable_chown_uploads = 0;
}
}
if (tunable_one_process_model)
{
vsf_one_process_start(&the_session);
}
else
{
vsf_two_process_start(&the_session);
}
/* NOTREACHED */
bug("should not get here: main");
return 1;
}
int
vsf_sysdep_check_auth(struct mystr* p_user_str,
const struct mystr* p_pass_str,
const struct mystr* p_remote_host)
{
/* Padavan */
(void) p_remote_host;
return asus_check_auth(p_user_str, p_pass_str);
#if 0
const char* p_crypted;
const struct passwd* p_pwd = getpwnam(str_getbuf(p_user_str));
(void) p_remote_host;
if (p_pwd == NULL)
{
return 0;
}
#ifdef VSF_SYSDEP_HAVE_USERSHELL
if (tunable_check_shell)
{
const char* p_shell;
while ((p_shell = getusershell()) != NULL)
{
if (!vsf_sysutil_strcmp(p_shell, p_pwd->pw_shell))
{
break;
}
}
endusershell();
if (p_shell == NULL)
{
return 0;
}
}
#endif
#ifdef VSF_SYSDEP_HAVE_SHADOW
{
const struct spwd* p_spwd = getspnam(str_getbuf(p_user_str));
if (p_spwd != NULL)
{
long curr_time = vsf_sysutil_get_time_sec();
int days;
days = curr_time / (60 * 60 * 24);
if (p_spwd->sp_expire > 0 && p_spwd->sp_expire < days)
{
return 0;
}
if (p_spwd->sp_lstchg > 0 && p_spwd->sp_max > 0 &&
p_spwd->sp_lstchg + p_spwd->sp_max < days)
{
return 0;
}
p_crypted = crypt(str_getbuf(p_pass_str), p_spwd->sp_pwdp);
if (!vsf_sysutil_strcmp(p_crypted, p_spwd->sp_pwdp))
{
return 1;
}
}
}
#endif /* VSF_SYSDEP_HAVE_SHADOW */
p_crypted = crypt(str_getbuf(p_pass_str), p_pwd->pw_passwd);
if (!vsf_sysutil_strcmp(p_crypted, p_pwd->pw_passwd))
{
return 1;
}
return 0;
#endif
}