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/*
SSSD
Authors:
Sumit Bose <sbose@redhat.com>
Copyright (C) 2013 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 "util/util.h"
#include "providers/ldap/sdap_idmap.h"
#define IPA_RANGE_LOCAL "ipa-local"
#define IPA_RANGE_AD_TRUST "ipa-ad-trust"
#define IPA_RANGE_AD_TRUST_POSIX "ipa-ad-trust-posix"
static void *
ipa_idmap_talloc(size_t size, void *pvt)
{
return talloc_size(pvt, size);
}
static void
ipa_idmap_talloc_free(void *ptr, void *pvt)
{
talloc_free(ptr);
}
errno_t ipa_idmap_find_new_domain(struct sdap_idmap_ctx *idmap_ctx,
const char *dom_name,
const char *dom_sid_str)
{
int ret;
size_t range_count;
struct range_info **range_list;
TALLOC_CTX *tmp_ctx;
size_t c;
enum idmap_error_code err;
struct range_info *r;
struct sss_idmap_range range;
uint32_t rid;
bool external_mapping;
char *name;
char *sid;
tmp_ctx = talloc_new(NULL);
if (tmp_ctx == NULL) {
DEBUG(SSSDBG_OP_FAILURE, ("talloc_new failed.\n"));
return ENOMEM;
}
ret = sysdb_get_ranges(tmp_ctx, idmap_ctx->id_ctx->be->domain->sysdb,
&range_count, &range_list);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("sysdb_get_ranges failed.\n"));
goto done;
}
for (c = 0; c < range_count; c++) {
r = range_list[c];
if (r->range_type == NULL) {
/* Older IPA servers might not have the range_type attribute, but
* only support local ranges and trusts with algorithmic mapping. */
if (r->trusted_dom_sid == NULL && r->secondary_base_rid != 0) {
/* local IPA domain */
rid = 0;
external_mapping = true;
name = idmap_ctx->id_ctx->be->domain->name;
sid = NULL;
} else if (r->trusted_dom_sid != NULL
&& r->secondary_base_rid == 0) {
/* trusted domain */
rid = r->base_rid;
external_mapping = false;
name = r->trusted_dom_sid;
sid = r->trusted_dom_sid;
} else {
DEBUG(SSSDBG_MINOR_FAILURE, ("Cannot determine range type, " \
"skipping id ange [%s].\n",
r->name));
continue;
}
} else {
if (strcmp(r->range_type, IPA_RANGE_LOCAL) == 0) {
rid = 0;
external_mapping = true;
name = idmap_ctx->id_ctx->be->domain->name;
sid = NULL;
} else if (strcmp(r->range_type, IPA_RANGE_AD_TRUST_POSIX) == 0) {
rid = 0;
external_mapping = true;
name = r->trusted_dom_sid;
sid = r->trusted_dom_sid;
} else if (strcmp(r->range_type, IPA_RANGE_AD_TRUST) == 0) {
rid = r->base_rid;
external_mapping = false;
name = r->trusted_dom_sid;
sid = r->trusted_dom_sid;
} else {
DEBUG(SSSDBG_MINOR_FAILURE, ("Range type [%s] not supported, " \
"skipping id range [%s].\n",
r->range_type, r->name));
continue;
}
}
range.min = r->base_id;
range.max = r->base_id + r->id_range_size -1;
err = sss_idmap_add_domain_ex(idmap_ctx->map, name, sid, &range,
r->name, rid, external_mapping);
if (err != IDMAP_SUCCESS && err != IDMAP_COLLISION) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Could not add range [%s] to ID map\n",
r->name));
ret = EIO;
goto done;
}
}
ret = EOK;
done:
talloc_free(tmp_ctx);
return ret;
}
errno_t ipa_idmap_init(TALLOC_CTX *mem_ctx,
struct sdap_id_ctx *id_ctx,
struct sdap_idmap_ctx **_idmap_ctx)
{
errno_t ret;
TALLOC_CTX *tmp_ctx;
enum idmap_error_code err;
size_t c;
struct sdap_idmap_ctx *idmap_ctx = NULL;
struct sysdb_ctx *sysdb = id_ctx->be->domain->sysdb;
size_t range_count;
struct range_info **range_list;
struct range_info *r;
struct sss_idmap_range range;
uint32_t rid;
bool external_mapping;
char *name;
char *sid;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
idmap_ctx = talloc_zero(tmp_ctx, struct sdap_idmap_ctx);
if (!idmap_ctx) {
ret = ENOMEM;
goto done;
}
idmap_ctx->id_ctx = id_ctx;
idmap_ctx->find_new_domain = ipa_idmap_find_new_domain;
/* Initialize the map */
err = sss_idmap_init(ipa_idmap_talloc, idmap_ctx,
ipa_idmap_talloc_free,
&idmap_ctx->map);
if (err != IDMAP_SUCCESS) {
DEBUG(SSSDBG_CRIT_FAILURE,
("Could not initialize the ID map: [%s]\n",
idmap_error_string(err)));
if (err == IDMAP_OUT_OF_MEMORY) {
ret = ENOMEM;
} else {
ret = EINVAL;
}
goto done;
}
/* Read in any existing mappings from the cache */
ret = sysdb_get_ranges(tmp_ctx, sysdb, &range_count, &range_list);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_FATAL_FAILURE,
("Could not read ranges from the cache: [%s]\n",
strerror(ret)));
goto done;
}
DEBUG(SSSDBG_CONF_SETTINGS,
("Initializing [%d] domains for ID-mapping\n", range_count));
for (c = 0; c < range_count; c++) {
r = range_list[c];
if (r->range_type == NULL) {
/* Older IPA servers might not have the range_type attribute, but
* only support local ranges and trusts with algorithmic mapping. */
if (r->trusted_dom_sid == NULL && r->secondary_base_rid != 0) {
/* local IPA domain */
rid = 0;
external_mapping = true;
sid = NULL;
name = id_ctx->be->domain->name;
} else if (r->trusted_dom_sid != NULL
&& r->secondary_base_rid == 0) {
/* trusted domain */
rid = r->base_rid;
external_mapping = false;
sid = r->trusted_dom_sid;
name = sid;
} else {
DEBUG(SSSDBG_MINOR_FAILURE, ("Cannot determine range type, " \
"skipping id ange [%s].\n",
r->name));
continue;
}
} else {
if (strcmp(r->range_type, IPA_RANGE_LOCAL) == 0) {
rid = 0;
external_mapping = true;
sid = NULL;
name = id_ctx->be->domain->name;
} else if (strcmp(r->range_type, IPA_RANGE_AD_TRUST_POSIX) == 0) {
rid = 0;
external_mapping = true;
sid = r->trusted_dom_sid;
name = sid;
} else if (strcmp(r->range_type, IPA_RANGE_AD_TRUST) == 0) {
rid = r->base_rid;
external_mapping = false;
sid = r->trusted_dom_sid;
name = sid;
} else {
DEBUG(SSSDBG_MINOR_FAILURE, ("Range type [%s] not supported, " \
"skipping id range [%s].\n",
r->range_type, r->name));
continue;
}
}
range.min = r->base_id;
range.max = r->base_id + r->id_range_size -1;
err = sss_idmap_add_domain_ex(idmap_ctx->map, name, sid, &range,
r->name, rid, external_mapping);
if (err != IDMAP_SUCCESS) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Could not add range [%s] to ID map\n",
r->name));
ret = EIO;
goto done;
}
}
*_idmap_ctx = talloc_steal(mem_ctx, idmap_ctx);
ret = EOK;
done:
talloc_free(tmp_ctx);
return ret;
}
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