ipa_subdomains.c revision dcb44c39dda9699cdd6488fd116a51ced0687de3
/*
SSSD
IPA Subdomains Module
Authors:
Sumit Bose <sbose@redhat.com>
Copyright (C) 2011 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 "providers/ldap/sdap_async.h"
#include "providers/ipa/ipa_subdomains.h"
#include "providers/ipa/ipa_common.h"
#include <ctype.h>
#define SUBDOMAINS_FILTER "objectclass=ipaNTTrustedDomain"
#define MASTER_DOMAIN_FILTER "objectclass=ipaNTDomainAttrs"
#define RANGE_FILTER "objectclass=ipaIDRange"
#define IPA_CN "cn"
#define IPA_FLATNAME "ipaNTFlatName"
#define IPA_SID "ipaNTSecurityIdentifier"
#define IPA_TRUSTED_DOMAIN_SID "ipaNTTrustedDomainSID"
#define IPA_BASE_ID "ipaBaseID"
#define IPA_ID_RANGE_SIZE "ipaIDRangeSize"
#define IPA_BASE_RID "ipaBaseRID"
#define IPA_SECONDARY_BASE_RID "ipaSecondaryBaseRID"
#define OBJECTCLASS "objectClass"
/* do not refresh more often than every 5 seconds for now */
#define IPA_SUBDOMAIN_REFRESH_LIMIT 5
/* refresh automatically every 4 hours */
#define IPA_SUBDOMAIN_REFRESH_PERIOD (3600 * 4)
#define IPA_SUBDOMAIN_DISABLED_PERIOD 3600
/* the directory domain - realm mappings are written to */
#define IPA_SUBDOMAIN_MAPPING_DIR PUBCONF_PATH"/krb5.include.d"
enum ipa_subdomains_req_type {
IPA_SUBDOMAINS_MASTER,
IPA_SUBDOMAINS_SLAVE,
IPA_SUBDOMAINS_RANGES,
IPA_SUBDOMAINS_MAX /* Counter */
};
struct ipa_subdomains_req_params {
const char *filter;
tevent_req_fn cb;
const char *attrs[8];
};
struct ipa_subdomains_ctx {
struct be_ctx *be_ctx;
struct sdap_id_ctx *sdap_id_ctx;
struct sdap_search_base **search_bases;
struct sdap_search_base **master_search_bases;
struct sdap_search_base **ranges_search_bases;
time_t last_refreshed;
struct tevent_timer *timer_event;
bool configured_explicit;
time_t disabled_until;
};
struct be_ctx *ipa_get_subdomains_be_ctx(struct be_ctx *be_ctx)
{
struct ipa_subdomains_ctx *subdom_ctx;
subdom_ctx = talloc_get_type(be_ctx->bet_info[BET_SUBDOMAINS].pvt_bet_data,
struct ipa_subdomains_ctx);
if (subdom_ctx == NULL) {
DEBUG(SSSDBG_TRACE_ALL, ("Subdomains are not configured.\n"));
return NULL;
}
return subdom_ctx->be_ctx;
}
const char *get_flat_name_from_subdomain_name(struct be_ctx *be_ctx,
const char *name)
{
struct ipa_subdomains_ctx *ctx;
struct sss_domain_info *dom;
ctx = talloc_get_type(be_ctx->bet_info[BET_SUBDOMAINS].pvt_bet_data,
struct ipa_subdomains_ctx);
if (ctx == NULL) {
DEBUG(SSSDBG_TRACE_ALL, ("Subdomains are not configured.\n"));
return NULL;
}
dom = find_subdomain_by_name(ctx->be_ctx->domain, name, true);
if (dom) {
return dom->flat_name;
}
return NULL;
}
static errno_t ipa_ranges_parse_results(TALLOC_CTX *mem_ctx,
size_t count,
struct sysdb_attrs **reply,
struct range_info ***_range_list)
{
struct range_info **range_list = NULL;
const char *value;
size_t c;
int ret;
range_list = talloc_array(mem_ctx, struct range_info *, count + 1);
if (range_list == NULL) {
DEBUG(SSSDBG_OP_FAILURE, ("talloc_array failed.\n"));
return ENOMEM;
}
for (c = 0; c < count; c++) {
range_list[c] = talloc_zero(range_list, struct range_info);
if (range_list[c] == NULL) {
DEBUG(SSSDBG_OP_FAILURE, ("talloc_zero failed.\n"));
ret = ENOMEM;
goto done;
}
ret = sysdb_attrs_get_string(reply[c], IPA_CN, &value);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
goto done;
}
range_list[c]->name = talloc_strdup(range_list[c], value);
if (range_list[c]->name == NULL) {
DEBUG(SSSDBG_OP_FAILURE, ("talloc_strdup failed.\n"));
ret = ENOMEM;
goto done;
}
ret = sysdb_attrs_get_string(reply[c], IPA_TRUSTED_DOMAIN_SID, &value);
if (ret == EOK) {
range_list[c]->trusted_dom_sid = talloc_strdup(range_list[c],
value);
if (range_list[c]->trusted_dom_sid == NULL) {
DEBUG(SSSDBG_OP_FAILURE, ("talloc_strdup failed.\n"));
ret = ENOMEM;
goto done;
}
} else if (ret != ENOENT) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
goto done;
}
ret = sysdb_attrs_get_uint32_t(reply[c], IPA_BASE_ID,
&range_list[c]->base_id);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
goto done;
}
ret = sysdb_attrs_get_uint32_t(reply[c], IPA_ID_RANGE_SIZE,
&range_list[c]->id_range_size);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
goto done;
}
ret = sysdb_attrs_get_uint32_t(reply[c], IPA_BASE_RID,
&range_list[c]->base_rid);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
goto done;
}
ret = sysdb_attrs_get_uint32_t(reply[c], IPA_SECONDARY_BASE_RID,
&range_list[c]->secondary_base_rid);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
goto done;
}
}
range_list[c] = NULL;
*_range_list = range_list;
ret = EOK;
done:
if (ret != EOK) {
talloc_free(range_list);
}
return ret;
}
static errno_t ipa_subdom_store(struct sss_domain_info *domain,
struct sysdb_attrs *attrs)
{
TALLOC_CTX *tmp_ctx;
const char *name;
char *realm;
const char *flat;
const char *id;
int ret;
tmp_ctx = talloc_new(domain);
if (tmp_ctx == NULL) {
return ENOMEM;
}
ret = sysdb_attrs_get_string(attrs, IPA_CN, &name);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
goto done;
}
realm = get_uppercase_realm(tmp_ctx, name);
if (!realm) {
ret = ENOMEM;
goto done;
}
ret = sysdb_attrs_get_string(attrs, IPA_FLATNAME, &flat);
if (ret) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
goto done;
}
ret = sysdb_attrs_get_string(attrs, IPA_TRUSTED_DOMAIN_SID, &id);
if (ret) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
goto done;
}
ret = sysdb_subdomain_store(domain->sysdb, name, realm, flat, id);
if (ret) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_subdomain_store failed.\n"));
goto done;
}
ret = EOK;
done:
talloc_free(tmp_ctx);
return ret;
}
static errno_t
ipa_subdomains_write_mappings(struct sss_domain_info *domain)
{
struct sss_domain_info *dom;
errno_t ret;
errno_t err;
TALLOC_CTX *tmp_ctx;
const char *mapping_file;
char *sanitized_domain;
char *tmp_file = NULL;
int fd = -1;
mode_t old_mode;
FILE *fstream = NULL;
int i;
if (domain == NULL || domain->name == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, ("No domain name provided\n"));
return EINVAL;
}
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
sanitized_domain = talloc_strdup(tmp_ctx, domain->name);
if (sanitized_domain == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, ("talloc_strdup() failed\n"));
return ENOMEM;
}
/* only alpha-numeric chars, dashes and underscores are allowed in
* krb5 include directory */
for (i = 0; sanitized_domain[i] != '\0'; i++) {
if (!isalnum(sanitized_domain[i])
&& sanitized_domain[i] != '-' && sanitized_domain[i] != '_') {
sanitized_domain[i] = '_';
}
}
mapping_file = talloc_asprintf(tmp_ctx, "%s/domain_realm_%s",
IPA_SUBDOMAIN_MAPPING_DIR, sanitized_domain);
if (!mapping_file) {
ret = ENOMEM;
goto done;
}
DEBUG(SSSDBG_FUNC_DATA, ("Mapping file for domain [%s] is [%s]\n",
domain->name, mapping_file));
tmp_file = talloc_asprintf(tmp_ctx, "%sXXXXXX", mapping_file);
if (tmp_file == NULL) {
ret = ENOMEM;
goto done;
}
old_mode = umask(077);
fd = mkstemp(tmp_file);
umask(old_mode);
if (fd < 0) {
DEBUG(SSSDBG_OP_FAILURE, ("creating the temp file [%s] for domain-realm "
"mappings failed.", tmp_file));
ret = EIO;
talloc_zfree(tmp_ctx);
goto done;
}
fstream = fdopen(fd, "a");
if (!fstream) {
ret = errno;
DEBUG(SSSDBG_OP_FAILURE, ("fdopen failed [%d]: %s\n",
ret, strerror(ret)));
ret = close(fd);
if (ret != 0) {
ret = errno;
DEBUG(SSSDBG_CRIT_FAILURE,
("fclose failed [%d][%s].\n", ret, strerror(ret)));
/* Nothing to do here, just report the failure */
}
ret = EIO;
goto done;
}
ret = fprintf(fstream, "[domain_realm]\n");
if (ret < 0) {
DEBUG(SSSDBG_OP_FAILURE, ("fprintf failed\n"));
ret = EIO;
goto done;
}
for (dom = get_next_domain(domain, true);
dom && IS_SUBDOMAIN(dom); /* if we get back to a parent, stop */
dom = get_next_domain(dom, false)) {
ret = fprintf(fstream, ".%s = %s\n%s = %s\n",
dom->name, dom->realm, dom->name, dom->realm);
if (ret < 0) {
DEBUG(SSSDBG_CRIT_FAILURE, ("fprintf failed\n"));
goto done;
}
}
ret = fclose(fstream);
fstream = NULL;
if (ret != 0) {
ret = errno;
DEBUG(SSSDBG_CRIT_FAILURE,
("fclose failed [%d][%s].\n", ret, strerror(ret)));
goto done;
}
ret = rename(tmp_file, mapping_file);
if (ret == -1) {
ret = errno;
DEBUG(SSSDBG_CRIT_FAILURE,
("rename failed [%d][%s].\n", ret, strerror(ret)));
goto done;
}
talloc_zfree(tmp_file);
ret = chmod(mapping_file, 0644);
if (ret == -1) {
ret = errno;
DEBUG(SSSDBG_CRIT_FAILURE,
("fchmod failed [%d][%s].\n", ret, strerror(ret)));
goto done;
}
ret = EOK;
done:
if (fstream) {
err = fclose(fstream);
if (err != 0) {
err = errno;
DEBUG(SSSDBG_CRIT_FAILURE,
("fclose failed [%d][%s].\n", err, strerror(err)));
/* Nothing to do here, just report the failure */
}
}
if (tmp_file) {
err = unlink(tmp_file);
if (err < 0) {
err = errno;
DEBUG(SSSDBG_MINOR_FAILURE,
("Could not remove file [%s]: [%d]: %s",
tmp_file, err, strerror(err)));
}
}
talloc_free(tmp_ctx);
return ret;
}
static errno_t ipa_subdomains_refresh(struct ipa_subdomains_ctx *ctx,
int count, struct sysdb_attrs **reply,
bool *changes)
{
struct sss_domain_info *domain, *dom;
bool handled[count];
const char *value;
int c, h;
int ret;
domain = ctx->be_ctx->domain;
memset(handled, 0, sizeof(bool) * count);
h = 0;
/* check existing subdomains */
for (dom = get_next_domain(domain, true);
dom && IS_SUBDOMAIN(dom); /* if we get back to a parent, stop */
dom = get_next_domain(dom, false)) {
for (c = 0; c < count; c++) {
if (handled[c]) {
continue;
}
ret = sysdb_attrs_get_string(reply[c], IPA_CN, &value);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
goto done;
}
if (strcmp(value, dom->name) == 0) {
break;
}
}
if (c >= count) {
/* ok this subdomain does not exist anymore, let's clean up */
dom->disabled = true;
ret = sysdb_subdomain_delete(dom->sysdb, dom->name);
if (ret != EOK) {
goto done;
}
} else {
/* ok let's try to update it */
ret = ipa_subdom_store(domain, reply[c]);
if (ret) {
/* Nothing we can do about the errorr. Let's at least try
* to reuse the existing domain
*/
DEBUG(SSSDBG_MINOR_FAILURE, ("Failed to parse subdom data, "
"will try to use cached subdomain\n"));
}
handled[c] = true;
h++;
}
}
if (count == h) {
/* all domains were already accounted for and have been updated */
ret = EOK;
goto done;
}
/* if we get here it means we have changes to the subdomains list */
*changes = true;
for (c = 0; c < count; c++) {
if (handled[c]) {
continue;
}
/* Nothing we can do about the errorr. Let's at least try
* to reuse the existing domain.
*/
ret = ipa_subdom_store(domain, reply[c]);
if (ret) {
DEBUG(SSSDBG_MINOR_FAILURE, ("Failed to parse subdom data, "
"will try to use cached subdomain\n"));
}
}
ret = EOK;
done:
if (ret != EOK) {
ctx->last_refreshed = 0;
} else {
ctx->last_refreshed = time(NULL);
}
return ret;
}
struct ipa_subdomains_req_ctx {
struct be_req *be_req;
struct ipa_subdomains_ctx *sd_ctx;
struct sdap_id_op *sdap_op;
char *current_filter;
struct sdap_search_base **search_bases;
int search_base_iter;
size_t reply_count;
struct sysdb_attrs **reply;
};
static void ipa_subdomains_get_conn_done(struct tevent_req *req);
static errno_t
ipa_subdomains_handler_get(struct ipa_subdomains_req_ctx *ctx,
enum ipa_subdomains_req_type type);
static void ipa_subdomains_handler_done(struct tevent_req *req);
static void ipa_subdomains_handler_master_done(struct tevent_req *req);
static void ipa_subdomains_handler_ranges_done(struct tevent_req *req);
static struct ipa_subdomains_req_params subdomain_requests[] = {
{ MASTER_DOMAIN_FILTER,
ipa_subdomains_handler_master_done,
{ IPA_CN, IPA_FLATNAME, IPA_SID, NULL }
},
{ SUBDOMAINS_FILTER,
ipa_subdomains_handler_done,
{ IPA_CN, IPA_FLATNAME, IPA_TRUSTED_DOMAIN_SID, NULL }
},
{ RANGE_FILTER,
ipa_subdomains_handler_ranges_done,
{ OBJECTCLASS, IPA_CN,
IPA_BASE_ID, IPA_BASE_RID, IPA_SECONDARY_BASE_RID,
IPA_ID_RANGE_SIZE, IPA_TRUSTED_DOMAIN_SID, NULL
}
}
};
static void ipa_subdomains_retrieve(struct ipa_subdomains_ctx *ctx, struct be_req *be_req)
{
struct ipa_subdomains_req_ctx *req_ctx = NULL;
struct tevent_req *req;
int dp_error = DP_ERR_FATAL;
int ret;
req_ctx = talloc(be_req, struct ipa_subdomains_req_ctx);
if (req_ctx == NULL) {
ret = ENOMEM;
goto done;
}
req_ctx->be_req = be_req;
req_ctx->sd_ctx = ctx;
req_ctx->search_base_iter = 0;
req_ctx->search_bases = ctx->search_bases;
req_ctx->current_filter = NULL;
req_ctx->reply_count = 0;
req_ctx->reply = NULL;
req_ctx->sdap_op = sdap_id_op_create(req_ctx,
ctx->sdap_id_ctx->conn->conn_cache);
if (req_ctx->sdap_op == NULL) {
DEBUG(SSSDBG_OP_FAILURE, ("sdap_id_op_create failed.\n"));
ret = ENOMEM;
goto done;
}
req = sdap_id_op_connect_send(req_ctx->sdap_op, req_ctx, &ret);
if (req == NULL) {
DEBUG(SSSDBG_OP_FAILURE, ("sdap_id_op_connect_send failed: %d(%s).\n",
ret, strerror(ret)));
goto done;
}
tevent_req_set_callback(req, ipa_subdomains_get_conn_done, req_ctx);
return;
done:
talloc_free(req_ctx);
if (ret == EOK) {
dp_error = DP_ERR_OK;
}
be_req_terminate(be_req, dp_error, ret, NULL);
}
static void ipa_subdomains_get_conn_done(struct tevent_req *req)
{
int ret;
int dp_error = DP_ERR_FATAL;
struct ipa_subdomains_req_ctx *ctx;
ctx = tevent_req_callback_data(req, struct ipa_subdomains_req_ctx);
ret = sdap_id_op_connect_recv(req, &dp_error);
talloc_zfree(req);
if (ret) {
if (dp_error == DP_ERR_OFFLINE) {
DEBUG(SSSDBG_MINOR_FAILURE,
("No IPA server is available, cannot get the "
"subdomain list while offline\n"));
/* FIXME: return saved results ?? */
} else {
DEBUG(SSSDBG_OP_FAILURE,
("Failed to connect to IPA server: [%d](%s)\n",
ret, strerror(ret)));
}
goto fail;
}
ret = ipa_subdomains_handler_get(ctx, IPA_SUBDOMAINS_SLAVE);
if (ret != EOK && ret != EAGAIN) {
goto fail;
}
return;
fail:
be_req_terminate(ctx->be_req, dp_error, ret, NULL);
}
static errno_t
ipa_subdomains_handler_get(struct ipa_subdomains_req_ctx *ctx,
enum ipa_subdomains_req_type type)
{
struct tevent_req *req;
struct sdap_search_base *base;
struct ipa_subdomains_req_params *params;
if (type >= IPA_SUBDOMAINS_MAX) {
return EINVAL;
}
params = &subdomain_requests[type];
base = ctx->search_bases[ctx->search_base_iter];
if (base == NULL) {
return EOK;
}
talloc_free(ctx->current_filter);
ctx->current_filter = sdap_get_id_specific_filter(ctx, params->filter,
base->filter);
if (ctx->current_filter == NULL) {
return ENOMEM;
}
req = sdap_get_generic_send(ctx, ctx->sd_ctx->be_ctx->ev,
ctx->sd_ctx->sdap_id_ctx->opts,
sdap_id_op_handle(ctx->sdap_op),
base->basedn, base->scope,
ctx->current_filter, params->attrs, NULL, 0,
dp_opt_get_int(ctx->sd_ctx->sdap_id_ctx->opts->basic,
SDAP_SEARCH_TIMEOUT), false);
if (req == NULL) {
DEBUG(SSSDBG_OP_FAILURE, ("sdap_get_generic_send failed.\n"));
return ENOMEM;
}
tevent_req_set_callback(req, params->cb, ctx);
return EAGAIN;
}
static void ipa_subdomains_handler_done(struct tevent_req *req)
{
int ret;
size_t reply_count;
struct sysdb_attrs **reply = NULL;
struct ipa_subdomains_req_ctx *ctx;
struct sss_domain_info *domain;
bool refresh_has_changes = false;
ctx = tevent_req_callback_data(req, struct ipa_subdomains_req_ctx);
domain = ctx->sd_ctx->be_ctx->domain;
ret = sdap_get_generic_recv(req, ctx, &reply_count, &reply);
talloc_zfree(req);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("sdap_get_generic_send request failed.\n"));
goto done;
}
if (reply_count) {
ctx->reply = talloc_realloc(ctx, ctx->reply, struct sysdb_attrs *,
ctx->reply_count + reply_count);
if (ctx->reply == NULL) {
ret = ENOMEM;
goto done;
}
memcpy(ctx->reply+ctx->reply_count, reply,
reply_count * sizeof(struct sysdb_attrs *));
ctx->reply_count += reply_count;
}
ctx->search_base_iter++;
ret = ipa_subdomains_handler_get(ctx, IPA_SUBDOMAINS_SLAVE);
if (ret == EAGAIN) {
return;
} else if (ret != EOK) {
goto done;
}
ret = ipa_subdomains_refresh(ctx->sd_ctx, ctx->reply_count, ctx->reply,
&refresh_has_changes);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("Failed to refresh subdomains.\n"));
goto done;
}
if (refresh_has_changes) {
ret = sysdb_update_subdomains(domain);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_update_subdomains failed.\n"));
goto done;
}
ret = ipa_subdomains_write_mappings(domain);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
("ipa_subdomains_write_mappings failed.\n"));
}
}
ctx->search_base_iter = 0;
ctx->search_bases = ctx->sd_ctx->ranges_search_bases;
ret = ipa_subdomains_handler_get(ctx, IPA_SUBDOMAINS_RANGES);
if (ret == EAGAIN) {
return;
} else if (ret != EOK) {
goto done;
}
DEBUG(SSSDBG_OP_FAILURE, ("No search base for ranges available.\n"));
ret = EINVAL;
done:
be_req_terminate(ctx->be_req, DP_ERR_FATAL, ret, NULL);
}
static void ipa_subdomains_handler_ranges_done(struct tevent_req *req)
{
errno_t ret;
int dp_error = DP_ERR_FATAL;
size_t reply_count;
struct sysdb_attrs **reply = NULL;
struct ipa_subdomains_req_ctx *ctx;
struct range_info **range_list = NULL;
struct sysdb_ctx *sysdb;
struct sss_domain_info *domain;
ctx = tevent_req_callback_data(req, struct ipa_subdomains_req_ctx);
domain = ctx->sd_ctx->be_ctx->domain;
sysdb = domain->sysdb;
ret = sdap_get_generic_recv(req, ctx, &reply_count, &reply);
talloc_zfree(req);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("sdap_get_generic_send request failed.\n"));
goto done;
}
ret = ipa_ranges_parse_results(ctx, reply_count, reply, &range_list);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE,
("ipa_ranges_parse_results request failed.\n"));
goto done;
}
ret = sysdb_update_ranges(sysdb, range_list);
talloc_free(range_list);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_update_ranges failed.\n"));
goto done;
}
ret = sysdb_master_domain_update(domain);
if (ret != EOK) {
goto done;
}
if (domain->flat_name == NULL ||
domain->domain_id == NULL ||
domain->realm == NULL) {
ctx->search_base_iter = 0;
ctx->search_bases = ctx->sd_ctx->master_search_bases;
ret = ipa_subdomains_handler_get(ctx, IPA_SUBDOMAINS_MASTER);
if (ret == EAGAIN) {
return;
} else if (ret != EOK) {
goto done;
}
} else {
ret = EOK;
}
done:
if (ret == EOK) {
dp_error = DP_ERR_OK;
}
be_req_terminate(ctx->be_req, dp_error, ret, NULL);
}
static void ipa_subdomains_handler_master_done(struct tevent_req *req)
{
errno_t ret;
int dp_error = DP_ERR_FATAL;
size_t reply_count;
struct sysdb_attrs **reply = NULL;
struct ipa_subdomains_req_ctx *ctx;
ctx = tevent_req_callback_data(req, struct ipa_subdomains_req_ctx);
ret = sdap_get_generic_recv(req, ctx, &reply_count, &reply);
talloc_zfree(req);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("sdap_get_generic_send request failed.\n"));
goto done;
}
if (reply_count) {
const char *flat = NULL;
const char *id = NULL;
ret = sysdb_attrs_get_string(reply[0], IPA_FLATNAME, &flat);
if (ret != EOK) {
goto done;
}
ret = sysdb_attrs_get_string(reply[0], IPA_SID, &id);
if (ret != EOK) {
goto done;
}
ret = sysdb_master_domain_add_info(ctx->sd_ctx->be_ctx->domain,
NULL, flat, id);
} else {
ctx->search_base_iter++;
ret = ipa_subdomains_handler_get(ctx, IPA_SUBDOMAINS_MASTER);
if (ret == EAGAIN) {
return;
} else if (ret != EOK) {
goto done;
}
/* Right now we know there has been an error
* and we don't have the master domain record
*/
DEBUG(SSSDBG_CRIT_FAILURE, ("Master domain record not found!\n"));
if (!ctx->sd_ctx->configured_explicit) {
ctx->sd_ctx->disabled_until = time(NULL) +
IPA_SUBDOMAIN_DISABLED_PERIOD;
}
ret = EIO;
}
done:
if (ret == EOK) {
dp_error = DP_ERR_OK;
}
be_req_terminate(ctx->be_req, dp_error, ret, NULL);
}
static void ipa_subdom_online_cb(void *pvt);
static void ipa_subdom_timer_refresh(struct tevent_context *ev,
struct tevent_timer *te,
struct timeval current_time,
void *pvt)
{
ipa_subdom_online_cb(pvt);
}
static void ipa_subdom_be_req_callback(struct be_req *be_req,
int dp_err, int dp_ret,
const char *errstr)
{
talloc_free(be_req);
}
static void ipa_subdom_online_cb(void *pvt)
{
struct ipa_subdomains_ctx *ctx;
struct be_req *be_req;
struct timeval tv;
ctx = talloc_get_type(pvt, struct ipa_subdomains_ctx);
if (!ctx) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Bad private pointer\n"));
return;
}
ctx->disabled_until = 0;
be_req = be_req_create(ctx, NULL, ctx->be_ctx,
ipa_subdom_be_req_callback, NULL);
if (be_req == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, ("be_req_create() failed.\n"));
return;
}
ipa_subdomains_retrieve(ctx, be_req);
tv = tevent_timeval_current_ofs(IPA_SUBDOMAIN_REFRESH_PERIOD, 0);
ctx->timer_event = tevent_add_timer(ctx->be_ctx->ev, ctx, tv,
ipa_subdom_timer_refresh, ctx);
if (!ctx->timer_event) {
DEBUG(SSSDBG_MINOR_FAILURE, ("Failed to add subdom timer event\n"));
}
}
static void ipa_subdom_offline_cb(void *pvt)
{
struct ipa_subdomains_ctx *ctx;
ctx = talloc_get_type(pvt, struct ipa_subdomains_ctx);
if (ctx) {
talloc_zfree(ctx->timer_event);
}
}
static errno_t get_config_status(struct be_ctx *be_ctx,
bool *configured_explicit)
{
int ret;
TALLOC_CTX *tmp_ctx = NULL;
char *tmp_str;
tmp_ctx = talloc_new(NULL);
if (tmp_ctx == NULL) {
DEBUG(SSSDBG_OP_FAILURE, ("talloc_new failed.\n"));
return ENOMEM;
}
ret = confdb_get_string(be_ctx->cdb, tmp_ctx, be_ctx->conf_path,
CONFDB_DOMAIN_SUBDOMAINS_PROVIDER, NULL,
&tmp_str);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("confdb_get_string failed.\n"));
goto done;
}
if (tmp_str == NULL) {
*configured_explicit = false;
} else {
*configured_explicit = true;
}
DEBUG(SSSDBG_TRACE_ALL, ("IPA subdomain provider is configured %s.\n",
*configured_explicit ? "explicit" : "implicit"));
ret = EOK;
done:
talloc_free(tmp_ctx);
return ret;
}
void ipa_subdomains_handler(struct be_req *be_req)
{
struct be_ctx *be_ctx = be_req_get_be_ctx(be_req);
struct ipa_subdomains_ctx *ctx;
time_t now;
ctx = talloc_get_type(be_ctx->bet_info[BET_SUBDOMAINS].pvt_bet_data,
struct ipa_subdomains_ctx);
if (!ctx) {
be_req_terminate(be_req, DP_ERR_FATAL, EINVAL, NULL);
return;
}
now = time(NULL);
if (ctx->disabled_until > now) {
DEBUG(SSSDBG_TRACE_ALL, ("Subdomain provider disabled.\n"));
be_req_terminate(be_req, DP_ERR_OK, EOK, NULL);
return;
}
if (ctx->last_refreshed > now - IPA_SUBDOMAIN_REFRESH_LIMIT) {
be_req_terminate(be_req, DP_ERR_OK, EOK, NULL);
return;
}
ipa_subdomains_retrieve(ctx, be_req);
}
struct bet_ops ipa_subdomains_ops = {
.handler = ipa_subdomains_handler,
.finalize = NULL
};
int ipa_subdom_init(struct be_ctx *be_ctx,
struct ipa_id_ctx *id_ctx,
struct bet_ops **ops,
void **pvt_data)
{
struct ipa_subdomains_ctx *ctx;
int ret;
bool configured_explicit = false;
ret = get_config_status(be_ctx, &configured_explicit);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("get_config_status failed.\n"));
return ret;
}
ctx = talloc_zero(id_ctx, struct ipa_subdomains_ctx);
if (ctx == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, ("talloc_zero failed.\n"));
return ENOMEM;
}
ctx->be_ctx = be_ctx;
ctx->sdap_id_ctx = id_ctx->sdap_id_ctx;
ctx->search_bases = id_ctx->ipa_options->subdomains_search_bases;
ctx->master_search_bases = id_ctx->ipa_options->master_domain_search_bases;
ctx->ranges_search_bases = id_ctx->ipa_options->ranges_search_bases;
ctx->configured_explicit = configured_explicit;
ctx->disabled_until = 0;
*ops = &ipa_subdomains_ops;
*pvt_data = ctx;
ret = be_add_online_cb(ctx, be_ctx, ipa_subdom_online_cb, ctx, NULL);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE, ("Failed to add subdom online callback"));
}
ret = be_add_offline_cb(ctx, be_ctx, ipa_subdom_offline_cb, ctx, NULL);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE, ("Failed to add subdom offline callback"));
}
return EOK;
}