responder/common/negcache_files.c

e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech/*
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   SSSD
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   NSS Responder
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   Copyright (C) Petr Čech <pcech@redhat.com>   2016
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   This program is free software; you can redistribute it and/or modify
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   it under the terms of the GNU General Public License as published by
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   the Free Software Foundation; either version 3 of the License, or
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   (at your option) any later version.
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   This program is distributed in the hope that it will be useful,
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   but WITHOUT ANY WARRANTY; without even the implied warranty of
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   GNU General Public License for more details.
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   You should have received a copy of the GNU General Public License
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech   along with this program.  If not, see <http://www.gnu.org/licenses/>.
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech*/
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech#include <sys/types.h>
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech#include <pwd.h>
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech#include <grp.h>
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech#include "util/util.h"
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech#include "responder/common/negcache_files.h"
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech#define BUFFER_SIZE 16384
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cechbool is_user_local_by_name(const char *name)
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech{
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    struct passwd pwd = { 0 };
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    struct passwd *pwd_result;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    char buffer[BUFFER_SIZE];
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    bool is_local = false;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    int ret;
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek    char *shortname = NULL;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek    ret = sss_parse_internal_fqname(NULL, name, &shortname, NULL);
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek    if (ret != EOK) {
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek        return false;
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek    }
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek    ret = getpwnam_r(shortname, &pwd, buffer, BUFFER_SIZE, &pwd_result);
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek    talloc_free(shortname);
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    if (ret == EOK && pwd_result != NULL) {
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech        DEBUG(SSSDBG_TRACE_FUNC, "User %s is a local user\n", name);
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech        is_local = true;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    }
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    return is_local;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech}
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cechbool is_user_local_by_uid(uid_t uid)
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech{
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    struct passwd pwd = { 0 };
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    struct passwd *pwd_result;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    char buffer[BUFFER_SIZE];
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    bool is_local = false;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    int ret;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    ret = getpwuid_r(uid, &pwd, buffer, BUFFER_SIZE, &pwd_result);
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    if (ret == EOK && pwd_result != NULL) {
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech        DEBUG(SSSDBG_TRACE_FUNC,
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech              "User with UID %"SPRIuid" is a local user\n", uid);
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech        is_local = true;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    }
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    return is_local;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech}
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cechbool is_group_local_by_name(const char *name)
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech{
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    struct group grp = { 0 };
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    struct group *grp_result;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    char buffer[BUFFER_SIZE];
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    bool is_local = false;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    int ret;
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek    char *shortname = NULL;
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek    ret = sss_parse_internal_fqname(NULL, name, &shortname, NULL);
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek    if (ret != EOK) {
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek        return false;
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek    }
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek    ret = getgrnam_r(shortname, &grp, buffer, BUFFER_SIZE, &grp_result);
27bf39ed3e197497cf4aca58038d788ea5b5ddbcJakub Hrozek    talloc_free(shortname);
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    if (ret == EOK && grp_result != NULL) {
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech        DEBUG(SSSDBG_TRACE_FUNC, "Group %s is a local group\n", name);
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech        is_local = true;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    }
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    return is_local;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech}
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cechbool is_group_local_by_gid(uid_t gid)
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech{
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    struct group grp = { 0 };
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    struct group *grp_result;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    char buffer[BUFFER_SIZE];
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    bool is_local = false;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    int ret;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    ret = getgrgid_r(gid, &grp, buffer, BUFFER_SIZE, &grp_result);
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    if (ret == EOK && grp_result != NULL) {
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech        DEBUG(SSSDBG_TRACE_FUNC,
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech              "Group with GID %"SPRIgid" is a local group\n", gid);
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech        is_local = true;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    }
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech    return is_local;
e7ccfb139388c947ec2dee16cfe3005f5643b90dPetr Cech}