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/*
SSSD
LDAP Helper routines
Copyright (C) Simo Sorce <ssorce@redhat.com>
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define LDAP_DEPRECATED 1
#include "util/util.h"
#include "confdb/confdb.h"
#include "providers/ldap/sdap.h"
/* =Retrieve-Options====================================================== */
int sdap_get_map(TALLOC_CTX *memctx,
struct confdb_ctx *cdb,
const char *conf_path,
struct sdap_id_map *def_map,
int num_entries,
struct sdap_id_map **_map)
{
struct sdap_id_map *map;
int i, ret;
map = talloc_array(memctx, struct sdap_id_map, num_entries);
if (!map) {
return ENOMEM;
}
for (i = 0; i < num_entries; i++) {
map[i].opt_name = def_map[i].opt_name;
map[i].def_name = def_map[i].def_name;
map[i].sys_name = def_map[i].sys_name;
ret = confdb_get_string(cdb, map, conf_path,
map[i].opt_name,
map[i].def_name,
&map[i].name);
if ((ret != EOK) || (map[i].def_name && !map[i].name)) {
DEBUG(0, ("Failed to retrieve value for %s\n", map[i].opt_name));
if (ret != EOK) {
talloc_zfree(map);
return EINVAL;
}
}
DEBUG(5, ("Option %s has value %s\n", map[i].opt_name, map[i].name));
}
*_map = map;
return EOK;
}
/* =Parse-msg============================================================= */
static int sdap_parse_entry(TALLOC_CTX *memctx,
struct sdap_handle *sh, struct sdap_msg *sm,
struct sdap_id_map *map, int attrs_num,
struct sysdb_attrs **_attrs, char **_dn)
{
struct sysdb_attrs *attrs;
BerElement *ber = NULL;
char **vals;
char *str;
int lerrno;
int a, i, ret;
lerrno = 0;
ldap_set_option(sh->ldap, LDAP_OPT_RESULT_CODE, &lerrno);
attrs = sysdb_new_attrs(memctx);
if (!attrs) return ENOMEM;
str = ldap_get_dn(sh->ldap, sm->msg);
if (!str) {
ldap_get_option(sh->ldap, LDAP_OPT_RESULT_CODE, &lerrno);
DEBUG(1, ("ldap_get_dn failed: %d(%s)\n",
lerrno, ldap_err2string(lerrno)));
ret = EIO;
goto fail;
}
DEBUG(9, ("OriginalDN: [%s].\n", str));
ret = sysdb_attrs_add_string(attrs, SYSDB_ORIG_DN, str);
if (ret) goto fail;
if (_dn) {
*_dn = talloc_strdup(memctx, str);
if (!*_dn) {
ret = ENOMEM;
ldap_memfree(str);
goto fail;
}
}
ldap_memfree(str);
vals = ldap_get_values(sh->ldap, sm->msg, "objectClass");
if (!vals) {
DEBUG(1, ("Unknown entry type, no objectClasses found!\n"));
ret = EINVAL;
goto fail;
}
for (i = 0; vals[i]; i++) {
/* the objectclass is always the first name in the map */
if (strcasecmp(vals[i], map[0].name) == 0) {
/* ok it's a user */
break;
}
}
if (!vals[i]) {
DEBUG(1, ("Not a user entry, objectClass not matching: %s\n",
map[0].name));
ldap_value_free(vals);
ret = EINVAL;
goto fail;
}
ldap_value_free(vals);
str = ldap_first_attribute(sh->ldap, sm->msg, &ber);
if (!str) {
ldap_get_option(sh->ldap, LDAP_OPT_RESULT_CODE, &lerrno);
DEBUG(1, ("Entry has no attributes [%d(%s)]!?\n",
lerrno, ldap_err2string(lerrno)));
ret = EINVAL;
goto fail;
}
while (str) {
for (a = 1; a < attrs_num; a++) {
/* check if this attr is valid with the chosen schema */
if (!map[a].name) continue;
/* check if it is an attr we are interested in */
if (strcasecmp(str, map[a].name) == 0) break;
}
if (a < attrs_num) {
/* interesting attr */
vals = ldap_get_values(sh->ldap, sm->msg, str);
if (!vals) {
ldap_get_option(sh->ldap, LDAP_OPT_RESULT_CODE, &lerrno);
DEBUG(1, ("LDAP Library error: %d(%s)",
lerrno, ldap_err2string(lerrno)));
ret = EIO;
goto fail;
}
if (!vals[0]) {
DEBUG(1, ("Missing value after ldap_get_values() ??\n"));
ret = EINVAL;
goto fail;
}
for (i = 0; vals[i]; i++) {
ret = sysdb_attrs_add_string(attrs, map[a].sys_name, vals[i]);
if (ret) goto fail;
}
ldap_value_free(vals);
}
ldap_memfree(str);
str = ldap_next_attribute(sh->ldap, sm->msg, ber);
}
ber_free(ber, 0);
ldap_get_option(sh->ldap, LDAP_OPT_RESULT_CODE, &lerrno);
if (lerrno) {
DEBUG(1, ("LDAP Library error: %d(%s)",
lerrno, ldap_err2string(lerrno)));
ret = EIO;
goto fail;
}
*_attrs = attrs;
return EOK;
fail:
if (ber) ber_free(ber, 0);
talloc_free(attrs);
return ret;
}
/* This function converts an ldap message into a sysdb_attrs structure.
* It converts only known user attributes, the rest are ignored.
* If the entry is not that of an user an error is returned.
* The original DN is stored as an attribute named originalDN */
int sdap_parse_user(TALLOC_CTX *memctx, struct sdap_options *opts,
struct sdap_handle *sh, struct sdap_msg *sm,
struct sysdb_attrs **_attrs, char **_dn)
{
return sdap_parse_entry(memctx, sh, sm, opts->user_map,
SDAP_OPTS_USER, _attrs, _dn);
}
/* This function converts an ldap message into a sysdb_attrs structure.
* It converts only known group attributes, the rest are ignored.
* If the entry is not that of an user an error is returned.
* The original DN is stored as an attribute named originalDN */
int sdap_parse_group(TALLOC_CTX *memctx, struct sdap_options *opts,
struct sdap_handle *sh, struct sdap_msg *sm,
struct sysdb_attrs **_attrs, char **_dn)
{
return sdap_parse_entry(memctx, sh, sm, opts->group_map,
SDAP_OPTS_GROUP, _attrs, _dn);
}
/* =Get-DN-from-message=================================================== */
int sdap_get_msg_dn(TALLOC_CTX *memctx, struct sdap_handle *sh,
struct sdap_msg *sm, char **_dn)
{
char *str;
int lerrno;
lerrno = 0;
ldap_set_option(sh->ldap, LDAP_OPT_RESULT_CODE, &lerrno);
str = ldap_get_dn(sh->ldap, sm->msg);
if (!str) {
ldap_get_option(sh->ldap, LDAP_OPT_RESULT_CODE, &lerrno);
DEBUG(1, ("ldap_get_dn failed: %d(%s)\n",
lerrno, ldap_err2string(lerrno)));
return EIO;
}
*_dn = talloc_strdup(memctx, str);
ldap_memfree(str);
if (!*_dn) return ENOMEM;
return EOK;
}
errno_t setup_tls_config(struct dp_option *basic_opts)
{
int ret;
int ldap_opt_x_tls_require_cert;
const char *tls_opt;
tls_opt = dp_opt_get_string(basic_opts, SDAP_TLS_REQCERT);
if (tls_opt) {
if (strcasecmp(tls_opt, "never") == 0) {
ldap_opt_x_tls_require_cert = LDAP_OPT_X_TLS_NEVER;
}
else if (strcasecmp(tls_opt, "allow") == 0) {
ldap_opt_x_tls_require_cert = LDAP_OPT_X_TLS_ALLOW;
}
else if (strcasecmp(tls_opt, "try") == 0) {
ldap_opt_x_tls_require_cert = LDAP_OPT_X_TLS_TRY;
}
else if (strcasecmp(tls_opt, "demand") == 0) {
ldap_opt_x_tls_require_cert = LDAP_OPT_X_TLS_DEMAND;
}
else if (strcasecmp(tls_opt, "hard") == 0) {
ldap_opt_x_tls_require_cert = LDAP_OPT_X_TLS_HARD;
}
else {
DEBUG(1, ("Unknown value for tls_reqcert.\n"));
return EINVAL;
}
/* LDAP_OPT_X_TLS_REQUIRE_CERT has to be set as a global option,
* because the SSL/TLS context is initialized from this value. */
ret = ldap_set_option(NULL, LDAP_OPT_X_TLS_REQUIRE_CERT,
&ldap_opt_x_tls_require_cert);
if (ret != LDAP_OPT_SUCCESS) {
DEBUG(1, ("ldap_set_option failed: %s\n", ldap_err2string(ret)));
return EIO;
}
}
tls_opt = dp_opt_get_string(basic_opts, SDAP_TLS_CACERT);
if (tls_opt) {
ret = ldap_set_option(NULL, LDAP_OPT_X_TLS_CACERTFILE, tls_opt);
if (ret != LDAP_OPT_SUCCESS) {
DEBUG(1, ("ldap_set_option failed: %s\n", ldap_err2string(ret)));
return EIO;
}
}
tls_opt = dp_opt_get_string(basic_opts, SDAP_TLS_CACERTDIR);
if (tls_opt) {
ret = ldap_set_option(NULL, LDAP_OPT_X_TLS_CACERTDIR, tls_opt);
if (ret != LDAP_OPT_SUCCESS) {
DEBUG(1, ("ldap_set_option failed: %s\n", ldap_err2string(ret)));
return EIO;
}
}
return EOK;
}
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