MODRET limit_login_post_pass(cmd_rec *cmd) {
/*
* PASSを通過すると cmd->server->conf にユーザー名が入る様子
* get_param_ptr()で取れる
*/
char *user = get_param_ptr(cmd->server->conf, "UserName", FALSE);
if(!user) {
pr_log_auth(PR_LOG_NOTICE, "User unknown. Something Wrong");
pr_response_send(R_530, _("Login incorrect."));
end_login(0);
}
int dummy;
if(session.dir_config &&
session.dir_config->subset &&
!login_check_limits(session.dir_config->subset, FALSE, TRUE ,&dummy)) {
remove_config(cmd->server->conf, C_USER, FALSE);
remove_config(cmd->server->conf, C_PASS, FALSE);
pr_log_auth(PR_LOG_NOTICE, "%s: Limit access denies login.", user);
pr_response_send(R_530, _("Login Denied."));
end_login(0);
}
pr_log_debug(DEBUG5, "%s: ok login_check_limits() post PASS", user);
return PR_DECLINED(cmd);
}
int proxy_session_setup_env(pool *p, const char *user, int flags) {
struct passwd *pw;
config_rec *c;
int i, res = 0, xerrno = 0;
const char *xferlog = NULL;
session.hide_password = TRUE;
/* Note: the given user name may not be known locally on the proxy; thus
* having pr_auth_getpwnam() returning NULL here is not an unexpected
* use case.
*/
pw = pr_auth_getpwnam(p, user);
if (pw != NULL) {
if (pw->pw_uid == PR_ROOT_UID) {
int root_login = FALSE;
pr_event_generate("mod_auth.root-login", NULL);
c = find_config(main_server->conf, CONF_PARAM, "RootLogin", FALSE);
if (c != NULL) {
root_login = *((int *) c->argv[0]);
}
if (root_login == FALSE) {
(void) pr_log_writefile(proxy_logfd, MOD_PROXY_VERSION,
"root login attempted, denied by RootLogin configuration");
pr_log_auth(PR_LOG_NOTICE, "SECURITY VIOLATION: Root login attempted.");
return -1;
}
pr_log_auth(PR_LOG_WARNING, "ROOT proxy login successful");
}
res = pr_auth_is_valid_shell(main_server->conf, pw->pw_shell);
if (res == FALSE) {
(void) pr_log_writefile(proxy_logfd, MOD_PROXY_VERSION,
"authentication for user '%s' failed: Invalid shell", user);
pr_log_auth(PR_LOG_NOTICE, "USER %s (Login failed): Invalid shell: '%s'",
user, pw->pw_shell);
errno = EPERM;
return -1;
}
res = pr_auth_banned_by_ftpusers(main_server->conf, pw->pw_name);
if (res == TRUE) {
(void) pr_log_writefile(proxy_logfd, MOD_PROXY_VERSION,
"authentication for user '%s' failed: User in " PR_FTPUSERS_PATH, user);
pr_log_auth(PR_LOG_NOTICE, "USER %s (Login failed): User in "
PR_FTPUSERS_PATH, pw->pw_name);
errno = EPERM;
return -1;
}
session.user = pstrdup(p, pw->pw_name);
session.group = pstrdup(p, pr_auth_gid2name(p, pw->pw_gid));
session.login_uid = pw->pw_uid;
session.login_gid = pw->pw_gid;
} else {
session.user = pstrdup(session.pool, user);
/* XXX What should session.group, session.login_uid, session.login_gid
* be? Kept as is?
*/
}
if (session.gids == NULL &&
session.groups == NULL) {
res = pr_auth_getgroups(p, session.user, &session.gids, &session.groups);
if (res < 1 &&
errno != ENOENT) {
(void) pr_log_writefile(proxy_logfd, MOD_PROXY_VERSION,
"no supplemental groups found for user '%s'", session.user);
}
}
if (flags & PROXY_SESSION_FL_CHECK_LOGIN_ACL) {
int login_acl;
login_acl = login_check_limits(main_server->conf, FALSE, TRUE, &i);
if (!login_acl) {
pr_log_auth(PR_LOG_NOTICE, "USER %s (Login failed): Limit configuration "
"denies login", user);
return -1;
}
}
/* XXX Will users want wtmp logging for a proxy login? */
session.wtmp_log = FALSE;
c = find_config(main_server->conf, CONF_PARAM, "TransferLog", FALSE);
if (c == NULL) {
xferlog = PR_XFERLOG_PATH;
} else {
xferlog = c->argv[0];
}
PRIVS_ROOT
if (strncasecmp(xferlog, "none", 5) == 0) {
xferlog_open(NULL);
} else {
xferlog_open(xferlog);
}
res = xerrno = 0;
if (pw != NULL) {
res = set_groups(p, pw->pw_gid, session.gids);
xerrno = errno;
}
PRIVS_RELINQUISH
if (res < 0) {
pr_log_pri(PR_LOG_WARNING, "unable to set process groups: %s",
strerror(xerrno));
}
session.disable_id_switching = TRUE;
session.proc_prefix = pstrdup(session.pool, session.c->remote_name);
session.sf_flags = 0;
pr_scoreboard_entry_update(session.pid,
PR_SCORE_USER, session.user,
PR_SCORE_CWD, pr_fs_getcwd(),
NULL);
if (session.group != NULL) {
session.group = pstrdup(session.pool, session.group);
}
if (session.groups != NULL) {
session.groups = copy_array_str(session.pool, session.groups);
}
proxy_sess_state |= PROXY_SESS_STATE_PROXY_AUTHENTICATED;
pr_timer_remove(PR_TIMER_LOGIN, ANY_MODULE);
return 0;
}
