ipa_init.c revision 88275cccddf39892e01682b39b02292eb74729bd
/*
SSSD
IPA Provider Initialization functions
Authors:
Simo Sorce <ssorce@redhat.com>
Copyright (C) 2009 Red Hat
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/>.
*/
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "util/child_common.h"
#include "providers/ipa/ipa_common.h"
#include "providers/krb5/krb5_auth.h"
#include "providers/krb5/krb5_init_shared.h"
#include "providers/ipa/ipa_id.h"
#include "providers/ipa/ipa_auth.h"
#include "providers/ipa/ipa_access.h"
#include "providers/ipa/ipa_hostid.h"
#include "providers/ipa/ipa_dyndns.h"
#include "providers/ipa/ipa_selinux.h"
#include "providers/ldap/sdap_access.h"
#include "providers/ipa/ipa_subdomains.h"
#include "providers/ipa/ipa_srv.h"
struct ipa_options *ipa_options = NULL;
/* Id Handler */
struct bet_ops ipa_id_ops = {
.handler = ipa_account_info_handler,
.finalize = NULL,
.check_online = ipa_check_online
};
struct bet_ops ipa_auth_ops = {
.handler = ipa_auth,
.finalize = NULL,
};
struct bet_ops ipa_chpass_ops = {
.handler = ipa_auth,
.finalize = NULL,
};
struct bet_ops ipa_access_ops = {
.handler = ipa_access_handler,
.finalize = NULL
};
struct bet_ops ipa_selinux_ops = {
.handler = ipa_selinux_handler,
.finalize = NULL
};
#ifdef BUILD_SSH
struct bet_ops ipa_hostid_ops = {
.handler = ipa_host_info_handler,
.finalize = NULL
};
#endif
int common_ipa_init(struct be_ctx *bectx)
{
const char *ipa_servers;
const char *ipa_backup_servers;
int ret;
ret = ipa_get_options(bectx, bectx->cdb,
bectx->conf_path,
bectx->domain, &ipa_options);
if (ret != EOK) {
return ret;
}
ipa_servers = dp_opt_get_string(ipa_options->basic, IPA_SERVER);
ipa_backup_servers = dp_opt_get_string(ipa_options->basic, IPA_BACKUP_SERVER);
ret = ipa_service_init(ipa_options, bectx, ipa_servers,
ipa_backup_servers, ipa_options,
&ipa_options->service);
if (ret != EOK) {
DEBUG(0, ("Failed to init IPA failover service!\n"));
return ret;
}
return EOK;
}
int sssm_ipa_id_init(struct be_ctx *bectx,
struct bet_ops **ops,
void **pvt_data)
{
struct ipa_id_ctx *ipa_ctx;
struct sdap_id_ctx *sdap_ctx;
struct stat stat_buf;
const char *hostname;
const char *ipa_domain;
struct ipa_srv_plugin_ctx *srv_ctx;
errno_t err;
int ret;
if (!ipa_options) {
ret = common_ipa_init(bectx);
if (ret != EOK) {
return ret;
}
}
if (ipa_options->id_ctx) {
/* already initialized */
*ops = &ipa_id_ops;
*pvt_data = ipa_options->id_ctx;
return EOK;
}
ipa_ctx = talloc_zero(ipa_options, struct ipa_id_ctx);
if (!ipa_ctx) {
return ENOMEM;
}
ipa_options->id_ctx = ipa_ctx;
ipa_ctx->ipa_options = ipa_options;
sdap_ctx = talloc_zero(ipa_options, struct sdap_id_ctx);
if (!sdap_ctx) {
return ENOMEM;
}
sdap_ctx->be = bectx;
sdap_ctx->service = ipa_options->service->sdap;
ipa_ctx->sdap_id_ctx = sdap_ctx;
ret = ipa_get_id_options(ipa_options, bectx->cdb,
bectx->conf_path,
&sdap_ctx->opts);
if (ret != EOK) {
goto done;
}
if(dp_opt_get_bool(ipa_options->basic, IPA_DYNDNS_UPDATE)) {
/* Perform automatic DNS updates when the
* IP address changes.
* Register a callback for successful LDAP
* reconnections. This is the easiest way to
* identify that we have gone online.
*/
/* Ensure that nsupdate exists */
errno = 0;
ret = stat(NSUPDATE_PATH, &stat_buf);
if (ret == -1) {
err = errno;
if (err == ENOENT) {
DEBUG(0, ("%s does not exist. Dynamic DNS updates disabled\n",
NSUPDATE_PATH));
}
else {
DEBUG(0, ("Could not set up dynamic DNS updates: [%d][%s]\n",
err, strerror(err)));
}
}
else {
/* nsupdate is available. Dynamic updates
* are supported
*/
ret = ipa_dyndns_init(sdap_ctx->be, ipa_options);
if (ret != EOK) {
DEBUG(1, ("Failure setting up automatic DNS update\n"));
/* We will continue without DNS updating */
}
}
}
ret = setup_tls_config(sdap_ctx->opts->basic);
if (ret != EOK) {
DEBUG(1, ("setup_tls_config failed [%d][%s].\n",
ret, strerror(ret)));
goto done;
}
ret = sdap_id_conn_cache_create(sdap_ctx, sdap_ctx, &sdap_ctx->conn_cache);
if (ret != EOK) {
goto done;
}
ret = sdap_id_setup_tasks(sdap_ctx);
if (ret != EOK) {
goto done;
}
ret = setup_child(sdap_ctx);
if (ret != EOK) {
DEBUG(1, ("setup_child failed [%d][%s].\n",
ret, strerror(ret)));
goto done;
}
/* setup SRV lookup plugin */
hostname = dp_opt_get_string(ipa_options->basic, IPA_HOSTNAME);
if (dp_opt_get_bool(ipa_options->basic, IPA_ENABLE_DNS_SITES)) {
/* use IPA plugin */
ipa_domain = dp_opt_get_string(ipa_options->basic, IPA_DOMAIN);
srv_ctx = ipa_srv_plugin_ctx_init(bectx, bectx->be_res->resolv,
hostname, ipa_domain);
if (srv_ctx == NULL) {
DEBUG(SSSDBG_FATAL_FAILURE, ("Out of memory?\n"));
ret = ENOMEM;
goto done;
}
be_fo_set_srv_lookup_plugin(bectx, ipa_srv_plugin_send,
ipa_srv_plugin_recv, srv_ctx, "IPA");
} else {
/* fall back to standard plugin */
ret = be_fo_set_dns_srv_lookup_plugin(bectx, hostname);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Unable to set SRV lookup plugin "
"[%d]: %s\n", ret, strerror(ret)));
goto done;
}
}
*ops = &ipa_id_ops;
*pvt_data = ipa_ctx;
ret = EOK;
done:
if (ret != EOK) {
talloc_zfree(ipa_options->id_ctx);
}
return ret;
}
int sssm_ipa_auth_init(struct be_ctx *bectx,
struct bet_ops **ops,
void **pvt_data)
{
struct ipa_auth_ctx *ipa_auth_ctx;
struct ipa_id_ctx *id_ctx;
struct krb5_ctx *krb5_auth_ctx;
struct sdap_auth_ctx *sdap_auth_ctx;
struct bet_ops *id_ops;
int ret;
if (!ipa_options) {
ret = common_ipa_init(bectx);
if (ret != EOK) {
return ret;
}
}
if (ipa_options->auth_ctx) {
/* already initialized */
*ops = &ipa_auth_ops;
*pvt_data = ipa_options->auth_ctx;
return EOK;
}
ipa_auth_ctx = talloc_zero(ipa_options, struct ipa_auth_ctx);
if (!ipa_auth_ctx) {
return ENOMEM;
}
ipa_options->auth_ctx = ipa_auth_ctx;
ret = sssm_ipa_id_init(bectx, &id_ops, (void **) &id_ctx);
if (ret != EOK) {
DEBUG(1, ("sssm_ipa_id_init failed.\n"));
goto done;
}
ipa_auth_ctx->sdap_id_ctx = id_ctx->sdap_id_ctx;
ret = dp_copy_options(ipa_auth_ctx, ipa_options->basic,
IPA_OPTS_BASIC, &ipa_auth_ctx->ipa_options);
if (ret != EOK) {
DEBUG(1, ("dp_copy_options failed.\n"));
goto done;
}
krb5_auth_ctx = talloc_zero(ipa_auth_ctx, struct krb5_ctx);
if (!krb5_auth_ctx) {
ret = ENOMEM;
goto done;
}
krb5_auth_ctx->service = ipa_options->service->krb5_service;
ipa_options->auth_ctx->krb5_auth_ctx = krb5_auth_ctx;
ret = ipa_get_auth_options(ipa_options, bectx->cdb, bectx->conf_path,
&krb5_auth_ctx->opts);
if (ret != EOK) {
goto done;
}
sdap_auth_ctx = talloc_zero(ipa_auth_ctx, struct sdap_auth_ctx);
if (!sdap_auth_ctx) {
ret = ENOMEM;
goto done;
}
sdap_auth_ctx->be = bectx;
sdap_auth_ctx->service = ipa_options->service->sdap;
ipa_options->auth_ctx->sdap_auth_ctx = sdap_auth_ctx;
ret = ipa_get_id_options(ipa_options, bectx->cdb, bectx->conf_path,
&sdap_auth_ctx->opts);
if (ret != EOK) {
goto done;
}
ret = setup_tls_config(sdap_auth_ctx->opts->basic);
if (ret != EOK) {
DEBUG(1, ("setup_tls_config failed [%d][%s].\n",
ret, strerror(ret)));
goto done;
}
/* Initialize features needed by the krb5_child */
ret = krb5_child_init(krb5_auth_ctx, bectx);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE,
("Could not initialize krb5_child settings: [%s]\n",
strerror(ret)));
goto done;
}
*ops = &ipa_auth_ops;
*pvt_data = ipa_auth_ctx;
ret = EOK;
done:
if (ret != EOK) {
talloc_zfree(ipa_options->auth_ctx);
}
return ret;
}
int sssm_ipa_chpass_init(struct be_ctx *bectx,
struct bet_ops **ops,
void **pvt_data)
{
int ret;
ret = sssm_ipa_auth_init(bectx, ops, pvt_data);
*ops = &ipa_chpass_ops;
return ret;
}
int sssm_ipa_access_init(struct be_ctx *bectx,
struct bet_ops **ops,
void **pvt_data)
{
int ret;
struct ipa_access_ctx *ipa_access_ctx;
struct ipa_id_ctx *id_ctx;
ipa_access_ctx = talloc_zero(bectx, struct ipa_access_ctx);
if (ipa_access_ctx == NULL) {
DEBUG(1, ("talloc_zero failed.\n"));
return ENOMEM;
}
ret = sssm_ipa_id_init(bectx, ops, (void **) &id_ctx);
if (ret != EOK) {
DEBUG(1, ("sssm_ipa_id_init failed.\n"));
goto done;
}
ipa_access_ctx->sdap_ctx = id_ctx->sdap_id_ctx;
ipa_access_ctx->host_map = id_ctx->ipa_options->host_map;
ipa_access_ctx->hostgroup_map = id_ctx->ipa_options->hostgroup_map;
ipa_access_ctx->host_search_bases = id_ctx->ipa_options->host_search_bases;
ipa_access_ctx->hbac_search_bases = id_ctx->ipa_options->hbac_search_bases;
ret = dp_copy_options(ipa_access_ctx, ipa_options->basic,
IPA_OPTS_BASIC, &ipa_access_ctx->ipa_options);
if (ret != EOK) {
DEBUG(1, ("dp_copy_options failed.\n"));
goto done;
}
/* Set up an sdap_access_ctx for checking expired/locked
* accounts.
*/
ipa_access_ctx->sdap_access_ctx =
talloc_zero(ipa_access_ctx, struct sdap_access_ctx);
ipa_access_ctx->sdap_access_ctx->id_ctx = ipa_access_ctx->sdap_ctx;
ipa_access_ctx->sdap_access_ctx->access_rule[0] = LDAP_ACCESS_EXPIRE;
ipa_access_ctx->sdap_access_ctx->access_rule[1] = LDAP_ACCESS_EMPTY;
*ops = &ipa_access_ops;
*pvt_data = ipa_access_ctx;
done:
if (ret != EOK) {
talloc_free(ipa_access_ctx);
}
return ret;
}
int sssm_ipa_selinux_init(struct be_ctx *bectx,
struct bet_ops **ops,
void **pvt_data)
{
int ret;
struct ipa_selinux_ctx *selinux_ctx;
struct ipa_options *opts;
selinux_ctx = talloc_zero(bectx, struct ipa_selinux_ctx);
if (selinux_ctx == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, ("talloc_zero failed.\n"));
return ENOMEM;
}
ret = sssm_ipa_id_init(bectx, ops, (void **) &selinux_ctx->id_ctx);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("sssm_ipa_id_init failed.\n"));
goto done;
}
opts = selinux_ctx->id_ctx->ipa_options;
selinux_ctx->hbac_search_bases = opts->hbac_search_bases;
selinux_ctx->host_search_bases = opts->host_search_bases;
selinux_ctx->selinux_search_bases = opts->selinux_search_bases;
*ops = &ipa_selinux_ops;
*pvt_data = selinux_ctx;
done:
if (ret != EOK) {
talloc_free(selinux_ctx);
}
return ret;
}
#ifdef BUILD_SSH
int sssm_ipa_hostid_init(struct be_ctx *bectx,
struct bet_ops **ops,
void **pvt_data)
{
int ret;
struct ipa_hostid_ctx *hostid_ctx;
struct ipa_id_ctx *id_ctx;
hostid_ctx = talloc_zero(bectx, struct ipa_hostid_ctx);
if (hostid_ctx == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, ("talloc_zero failed.\n"));
return ENOMEM;
}
ret = sssm_ipa_id_init(bectx, ops, (void **) &id_ctx);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("sssm_ipa_id_init failed.\n"));
goto done;
}
hostid_ctx->sdap_id_ctx = id_ctx->sdap_id_ctx;
hostid_ctx->host_search_bases = id_ctx->ipa_options->host_search_bases;
hostid_ctx->ipa_opts = ipa_options;
*ops = &ipa_hostid_ops;
*pvt_data = hostid_ctx;
done:
if (ret != EOK) {
talloc_free(hostid_ctx);
}
return ret;
}
#endif
int sssm_ipa_autofs_init(struct be_ctx *bectx,
struct bet_ops **ops,
void **pvt_data)
{
#ifdef BUILD_AUTOFS
struct ipa_id_ctx *id_ctx;
int ret;
DEBUG(SSSDBG_TRACE_INTERNAL, ("Initializing IPA autofs handler\n"));
ret = sssm_ipa_id_init(bectx, ops, (void **) &id_ctx);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("sssm_ipa_id_init failed.\n"));
return ret;
}
return ipa_autofs_init(bectx, id_ctx, ops, pvt_data);
#else
DEBUG(SSSDBG_MINOR_FAILURE, ("Autofs init handler called but SSSD is "
"built without autofs support, ignoring\n"));
return EOK;
#endif
}
int sssm_ipa_subdomains_init(struct be_ctx *bectx,
struct bet_ops **ops,
void **pvt_data)
{
int ret;
struct ipa_id_ctx *id_ctx;
ret = sssm_ipa_id_init(bectx, ops, (void **) &id_ctx);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("sssm_ipa_id_init failed.\n"));
return ret;
}
ret = ipa_subdom_init(bectx, id_ctx, ops, pvt_data);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("ipa_subdom_init failed.\n"));
return ret;
}
return EOK;
}