sdap_async_initgroups.c revision 5ff7a765434ed0b4d37564ade26d7761d06f81c3
/*
SSSD
Async LDAP Helper routines - initgroups operation
Copyright (C) Simo Sorce <ssorce@redhat.com> - 2009
Copyright (C) 2010, Ralf Haferkamp <rhafer@suse.de>, Novell Inc.
Copyright (C) Jan Zeleny <jzeleny@redhat.com> - 2011
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 "db/sysdb.h"
#include "providers/ldap/sdap_async_private.h"
#include "providers/ldap/ldap_common.h"
#include "providers/ldap/sdap_idmap.h"
#include "providers/ldap/sdap_users.h"
/* ==Save-fake-group-list=====================================*/
errno_t sdap_add_incomplete_groups(struct sysdb_ctx *sysdb,
struct sss_domain_info *domain,
struct sdap_options *opts,
char **groupnames,
struct sysdb_attrs **ldap_groups,
int ldap_groups_count)
{
TALLOC_CTX *tmp_ctx;
struct ldb_message *msg;
int i, mi, ai;
const char *groupname;
const char *original_dn;
const char *uuid = NULL;
char **missing;
gid_t gid;
int ret;
errno_t sret;
bool in_transaction = false;
bool posix;
time_t now;
char *sid_str = NULL;
bool use_id_mapping;
bool need_filter;
char *tmp_name;
/* There are no groups in LDAP but we should add user to groups ?? */
if (ldap_groups_count == 0) return EOK;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
missing = talloc_array(tmp_ctx, char *, ldap_groups_count+1);
if (!missing) {
ret = ENOMEM;
goto done;
}
mi = 0;
for (i=0; groupnames[i]; i++) {
tmp_name = sss_get_domain_name(tmp_ctx, groupnames[i], domain);
if (tmp_name == NULL) {
DEBUG(SSSDBG_OP_FAILURE,
"Failed to format original name [%s]\n", groupnames[i]);
ret = ENOMEM;
goto done;
}
ret = sysdb_search_group_by_name(tmp_ctx, domain, tmp_name, NULL,
&msg);
if (ret == EOK) {
continue;
} else if (ret == ENOENT) {
missing[mi] = talloc_steal(missing, tmp_name);
DEBUG(SSSDBG_TRACE_LIBS, "Group #%d [%s][%s] is not cached, " \
"need to add a fake entry\n",
i, groupnames[i], missing[mi]);
mi++;
continue;
} else if (ret != ENOENT) {
DEBUG(SSSDBG_CRIT_FAILURE, "search for group failed [%d]: %s\n",
ret, strerror(ret));
goto done;
}
}
missing[mi] = NULL;
/* All groups are cached, nothing to do */
if (mi == 0) {
ret = EOK;
goto done;
}
use_id_mapping = sdap_idmap_domain_has_algorithmic_mapping(opts->idmap_ctx,
domain->name,
domain->domain_id);
ret = sysdb_transaction_start(sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Cannot start sysdb transaction [%d]: %s\n",
ret, strerror(ret));
goto done;
}
in_transaction = true;
now = time(NULL);
for (i=0; missing[i]; i++) {
/* The group is not in sysdb, need to add a fake entry */
for (ai=0; ai < ldap_groups_count; ai++) {
ret = sdap_get_group_primary_name(tmp_ctx, opts, ldap_groups[ai],
domain, &groupname);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE,
"The group has no name attribute\n");
goto done;
}
if (strcmp(groupname, missing[i]) == 0) {
posix = true;
ret = sdap_attrs_get_sid_str(
tmp_ctx, opts->idmap_ctx, ldap_groups[ai],
opts->group_map[SDAP_AT_GROUP_OBJECTSID].sys_name,
&sid_str);
if (ret != EOK && ret != ENOENT) goto done;
if (use_id_mapping) {
if (sid_str == NULL) {
DEBUG(SSSDBG_MINOR_FAILURE, "No SID for group [%s] " \
"while id-mapping.\n",
groupname);
ret = EINVAL;
goto done;
}
DEBUG(SSSDBG_TRACE_LIBS,
"Mapping group [%s] objectSID to unix ID\n", groupname);
DEBUG(SSSDBG_TRACE_INTERNAL,
"Group [%s] has objectSID [%s]\n",
groupname, sid_str);
/* Convert the SID into a UNIX group ID */
ret = sdap_idmap_sid_to_unix(opts->idmap_ctx, sid_str,
&gid);
if (ret == EOK) {
DEBUG(SSSDBG_TRACE_INTERNAL,
"Group [%s] has mapped gid [%lu]\n",
groupname, (unsigned long)gid);
} else {
posix = false;
gid = 0;
DEBUG(SSSDBG_TRACE_INTERNAL,
"Group [%s] cannot be mapped. "
"Treating as a non-POSIX group\n",
groupname);
}
} else {
ret = sysdb_attrs_get_uint32_t(ldap_groups[ai],
SYSDB_GIDNUM,
&gid);
if (ret == ENOENT || (ret == EOK && gid == 0)) {
DEBUG(SSSDBG_TRACE_LIBS, "The group %s gid was %s\n",
groupname, ret == ENOENT ? "missing" : "zero");
DEBUG(SSSDBG_TRACE_FUNC,
"Marking group %s as non-posix and setting GID=0!\n",
groupname);
gid = 0;
posix = false;
} else if (ret) {
DEBUG(SSSDBG_CRIT_FAILURE,
"The GID attribute is malformed\n");
goto done;
}
}
ret = sysdb_attrs_get_string(ldap_groups[ai],
SYSDB_ORIG_DN,
&original_dn);
if (ret) {
DEBUG(SSSDBG_FUNC_DATA,
"The group has no original DN\n");
original_dn = NULL;
}
ret = sysdb_handle_original_uuid(
opts->group_map[SDAP_AT_GROUP_UUID].def_name,
ldap_groups[ai],
opts->group_map[SDAP_AT_GROUP_UUID].sys_name,
ldap_groups[ai], "uniqueIDstr");
if (ret != EOK) {
DEBUG((ret == ENOENT) ? SSSDBG_TRACE_ALL : SSSDBG_MINOR_FAILURE,
"Failed to retrieve UUID [%d][%s].\n",
ret, sss_strerror(ret));
}
ret = sysdb_attrs_get_string(ldap_groups[ai],
"uniqueIDstr",
&uuid);
if (ret) {
DEBUG(SSSDBG_FUNC_DATA,
"The group has no UUID\n");
uuid = NULL;
}
ret = sdap_check_ad_group_type(domain, opts, ldap_groups[ai],
groupname, &need_filter);
if (ret != EOK) {
goto done;
}
if (need_filter) {
posix = false;
gid = 0;
}
DEBUG(SSSDBG_TRACE_INTERNAL,
"Adding fake group %s to sysdb\n", groupname);
ret = sysdb_add_incomplete_group(domain, groupname, gid,
original_dn, sid_str,
uuid, posix, now);
if (ret != EOK) {
goto done;
}
break;
}
}
if (ai == ldap_groups_count) {
DEBUG(SSSDBG_OP_FAILURE,
"Group %s not present in LDAP\n", missing[i]);
ret = EINVAL;
goto done;
}
}
ret = sysdb_transaction_commit(sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "sysdb_transaction_commit failed.\n");
goto done;
}
in_transaction = false;
ret = EOK;
done:
if (in_transaction) {
sret = sysdb_transaction_cancel(sysdb);
if (sret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to cancel transaction\n");
}
}
talloc_free(tmp_ctx);
return ret;
}
int sdap_initgr_common_store(struct sysdb_ctx *sysdb,
struct sss_domain_info *domain,
struct sdap_options *opts,
const char *name,
enum sysdb_member_type type,
char **sysdb_grouplist,
struct sysdb_attrs **ldap_groups,
int ldap_groups_count)
{
TALLOC_CTX *tmp_ctx;
char **ldap_grouplist = NULL;
char **add_groups;
char **del_groups;
int ret, tret;
bool in_transaction = false;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
if (ldap_groups_count == 0) {
/* No groups for this user in LDAP.
* We need to ensure that there are no groups
* in the sysdb either.
*/
ldap_grouplist = NULL;
} else {
ret = sysdb_attrs_primary_name_list(
sysdb, tmp_ctx,
ldap_groups, ldap_groups_count,
opts->group_map[SDAP_AT_GROUP_NAME].name,
&ldap_grouplist);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE,
"sysdb_attrs_primary_name_list failed [%d]: %s\n",
ret, strerror(ret));
goto done;
}
}
/* Find the differences between the sysdb and LDAP lists
* Groups in the sysdb only must be removed.
*/
ret = diff_string_lists(tmp_ctx, ldap_grouplist, sysdb_grouplist,
&add_groups, &del_groups, NULL);
if (ret != EOK) goto done;
ret = sysdb_transaction_start(sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to start transaction\n");
goto done;
}
in_transaction = true;
/* Add fake entries for any groups the user should be added as
* member of but that are not cached in sysdb
*/
if (add_groups && add_groups[0]) {
ret = sdap_add_incomplete_groups(sysdb, domain, opts,
add_groups, ldap_groups,
ldap_groups_count);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Adding incomplete users failed\n");
goto done;
}
}
DEBUG(SSSDBG_TRACE_INTERNAL, "Updating memberships for %s\n", name);
ret = sysdb_update_members(domain, name, type,
(const char *const *) add_groups,
(const char *const *) del_groups);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Membership update failed [%d]: %s\n",
ret, strerror(ret));
goto done;
}
ret = sysdb_transaction_commit(sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to commit transaction\n");
goto done;
}
in_transaction = false;
ret = EOK;
done:
if (in_transaction) {
tret = sysdb_transaction_cancel(sysdb);
if (tret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to cancel transaction\n");
}
}
talloc_zfree(tmp_ctx);
return ret;
}
/* ==Initgr-call-(groups-a-user-is-member-of)-RFC2307===================== */
struct sdap_initgr_rfc2307_state {
struct tevent_context *ev;
struct sysdb_ctx *sysdb;
struct sss_domain_info *domain;
struct sdap_options *opts;
struct sdap_handle *sh;
const char **attrs;
const char *name;
const char *base_filter;
const char *orig_dn;
char *filter;
int timeout;
struct sdap_op *op;
struct sysdb_attrs **ldap_groups;
size_t ldap_groups_count;
size_t base_iter;
struct sdap_search_base **search_bases;
};
static errno_t sdap_initgr_rfc2307_next_base(struct tevent_req *req);
static void sdap_initgr_rfc2307_process(struct tevent_req *subreq);
struct tevent_req *sdap_initgr_rfc2307_send(TALLOC_CTX *memctx,
struct tevent_context *ev,
struct sdap_options *opts,
struct sysdb_ctx *sysdb,
struct sss_domain_info *domain,
struct sdap_handle *sh,
const char *name)
{
struct tevent_req *req;
struct sdap_initgr_rfc2307_state *state;
const char **attr_filter;
char *clean_name;
errno_t ret;
char *oc_list;
req = tevent_req_create(memctx, &state, struct sdap_initgr_rfc2307_state);
if (!req) return NULL;
state->ev = ev;
state->opts = opts;
state->sysdb = sysdb;
state->domain = domain;
state->sh = sh;
state->op = NULL;
state->timeout = dp_opt_get_int(state->opts->basic, SDAP_SEARCH_TIMEOUT);
state->ldap_groups = NULL;
state->ldap_groups_count = 0;
state->base_iter = 0;
state->search_bases = opts->sdom->group_search_bases;
if (!state->search_bases) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Initgroups lookup request without a group search base\n");
ret = EINVAL;
goto done;
}
state->name = talloc_strdup(state, name);
if (!state->name) {
talloc_zfree(req);
return NULL;
}
attr_filter = talloc_array(state, const char *, 2);
if (!attr_filter) {
talloc_free(req);
return NULL;
}
attr_filter[0] = opts->group_map[SDAP_AT_GROUP_MEMBER].name;
attr_filter[1] = NULL;
ret = build_attrs_from_map(state, opts->group_map, SDAP_OPTS_GROUP,
attr_filter, &state->attrs, NULL);
if (ret != EOK) {
talloc_free(req);
return NULL;
}
ret = sss_filter_sanitize(state, name, &clean_name);
if (ret != EOK) {
talloc_free(req);
return NULL;
}
oc_list = sdap_make_oc_list(state, opts->group_map);
if (oc_list == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to create objectClass list.\n");
ret = ENOMEM;
goto done;
}
state->base_filter = talloc_asprintf(state,
"(&(%s=%s)(%s)(%s=*)(&(%s=*)(!(%s=0))))",
opts->group_map[SDAP_AT_GROUP_MEMBER].name,
clean_name, oc_list,
opts->group_map[SDAP_AT_GROUP_NAME].name,
opts->group_map[SDAP_AT_GROUP_GID].name,
opts->group_map[SDAP_AT_GROUP_GID].name);
if (!state->base_filter) {
talloc_zfree(req);
return NULL;
}
talloc_zfree(clean_name);
ret = sdap_initgr_rfc2307_next_base(req);
done:
if (ret != EOK) {
tevent_req_error(req, ret);
tevent_req_post(req, ev);
}
return req;
}
static errno_t sdap_initgr_rfc2307_next_base(struct tevent_req *req)
{
struct tevent_req *subreq;
struct sdap_initgr_rfc2307_state *state;
state = tevent_req_data(req, struct sdap_initgr_rfc2307_state);
talloc_zfree(state->filter);
state->filter = sdap_combine_filters( state, state->base_filter,
state->search_bases[state->base_iter]->filter);
if (!state->filter) {
return ENOMEM;
}
DEBUG(SSSDBG_TRACE_FUNC,
"Searching for groups with base [%s]\n",
state->search_bases[state->base_iter]->basedn);
subreq = sdap_get_generic_send(
state, state->ev, state->opts, state->sh,
state->search_bases[state->base_iter]->basedn,
state->search_bases[state->base_iter]->scope,
state->filter, state->attrs,
state->opts->group_map, SDAP_OPTS_GROUP,
state->timeout,
true);
if (!subreq) {
return ENOMEM;
}
tevent_req_set_callback(subreq, sdap_initgr_rfc2307_process, req);
return EOK;
}
static void sdap_initgr_rfc2307_process(struct tevent_req *subreq)
{
struct tevent_req *req;
struct sdap_initgr_rfc2307_state *state;
struct sysdb_attrs **ldap_groups;
char **sysdb_grouplist = NULL;
size_t count;
int ret;
int i;
req = tevent_req_callback_data(subreq, struct tevent_req);
state = tevent_req_data(req, struct sdap_initgr_rfc2307_state);
ret = sdap_get_generic_recv(subreq, state, &count, &ldap_groups);
talloc_zfree(subreq);
if (ret) {
tevent_req_error(req, ret);
return;
}
/* Add this batch of groups to the list */
if (count > 0) {
state->ldap_groups =
talloc_realloc(state,
state->ldap_groups,
struct sysdb_attrs *,
state->ldap_groups_count + count + 1);
if (!state->ldap_groups) {
tevent_req_error(req, ENOMEM);
return;
}
/* Copy the new groups into the list.
*/
for (i = 0; i < count; i++) {
state->ldap_groups[state->ldap_groups_count + i] =
talloc_steal(state->ldap_groups, ldap_groups[i]);
}
state->ldap_groups_count += count;
state->ldap_groups[state->ldap_groups_count] = NULL;
}
state->base_iter++;
/* Check for additional search bases, and iterate
* through again.
*/
if (state->search_bases[state->base_iter] != NULL) {
ret = sdap_initgr_rfc2307_next_base(req);
if (ret != EOK) {
tevent_req_error(req, ret);
}
return;
}
/* Search for all groups for which this user is a member */
ret = get_sysdb_grouplist(state, state->sysdb, state->domain,
state->name, &sysdb_grouplist);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
/* There are no nested groups here so we can just update the
* memberships */
ret = sdap_initgr_common_store(state->sysdb,
state->domain,
state->opts,
state->name,
SYSDB_MEMBER_USER,
sysdb_grouplist,
state->ldap_groups,
state->ldap_groups_count);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
tevent_req_done(req);
}
static int sdap_initgr_rfc2307_recv(struct tevent_req *req)
{
TEVENT_REQ_RETURN_ON_ERROR(req);
return EOK;
}
/* ==Common code for pure RFC2307bis and IPA/AD========================= */
static errno_t
sdap_nested_groups_store(struct sysdb_ctx *sysdb,
struct sss_domain_info *domain,
struct sdap_options *opts,
struct sysdb_attrs **groups,
unsigned long count)
{
errno_t ret, tret;
TALLOC_CTX *tmp_ctx;
char **groupnamelist = NULL;
bool in_transaction = false;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
if (count > 0) {
ret = sysdb_attrs_primary_name_list(sysdb, tmp_ctx,
groups, count,
opts->group_map[SDAP_AT_GROUP_NAME].name,
&groupnamelist);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"sysdb_attrs_primary_name_list failed [%d]: %s\n",
ret, strerror(ret));
goto done;
}
}
ret = sysdb_transaction_start(sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to start transaction\n");
goto done;
}
in_transaction = true;
ret = sdap_add_incomplete_groups(sysdb, domain, opts, groupnamelist,
groups, count);
if (ret != EOK) {
DEBUG(SSSDBG_TRACE_FUNC, "Could not add incomplete groups [%d]: %s\n",
ret, strerror(ret));
goto done;
}
ret = sysdb_transaction_commit(sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to commit transaction\n");
goto done;
}
in_transaction = false;
ret = EOK;
done:
if (in_transaction) {
tret = sysdb_transaction_cancel(sysdb);
if (tret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to cancel transaction\n");
}
}
talloc_free(tmp_ctx);
return ret;
}
struct membership_diff {
struct membership_diff *prev;
struct membership_diff *next;
const char *name;
char **add;
char **del;
};
static errno_t
build_membership_diff(TALLOC_CTX *mem_ctx, const char *name,
char **ldap_parent_names, char **sysdb_parent_names,
struct membership_diff **_mdiff)
{
TALLOC_CTX *tmp_ctx;
struct membership_diff *mdiff;
errno_t ret;
char **add_groups;
char **del_groups;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) {
ret = ENOMEM;
goto done;
}
mdiff = talloc_zero(tmp_ctx, struct membership_diff);
if (!mdiff) {
ret = ENOMEM;
goto done;
}
mdiff->name = talloc_strdup(mdiff, name);
if (!mdiff->name) {
ret = ENOMEM;
goto done;
}
/* Find the differences between the sysdb and ldap lists
* Groups in ldap only must be added to the sysdb;
* groups in the sysdb only must be removed.
*/
ret = diff_string_lists(tmp_ctx,
ldap_parent_names, sysdb_parent_names,
&add_groups, &del_groups, NULL);
if (ret != EOK) {
goto done;
}
mdiff->add = talloc_steal(mdiff, add_groups);
mdiff->del = talloc_steal(mdiff, del_groups);
ret = EOK;
*_mdiff = talloc_steal(mem_ctx, mdiff);
done:
talloc_free(tmp_ctx);
return ret;
}
/* ==Initgr-call-(groups-a-user-is-member-of)-nested-groups=============== */
struct sdap_initgr_nested_state {
struct tevent_context *ev;
struct sysdb_ctx *sysdb;
struct sdap_options *opts;
struct sss_domain_info *dom;
struct sdap_handle *sh;
struct sysdb_attrs *user;
const char *username;
const char *orig_dn;
const char **grp_attrs;
struct ldb_message_element *memberof;
char *filter;
char **group_dns;
int cur;
struct sdap_op *op;
struct sysdb_attrs **groups;
int groups_cur;
};
static errno_t sdap_initgr_nested_deref_search(struct tevent_req *req);
static errno_t sdap_initgr_nested_noderef_search(struct tevent_req *req);
static void sdap_initgr_nested_search(struct tevent_req *subreq);
static void sdap_initgr_nested_store(struct tevent_req *req);
static struct tevent_req *sdap_initgr_nested_send(TALLOC_CTX *memctx,
struct tevent_context *ev,
struct sdap_options *opts,
struct sysdb_ctx *sysdb,
struct sss_domain_info *dom,
struct sdap_handle *sh,
struct sysdb_attrs *user,
const char **grp_attrs)
{
struct tevent_req *req;
struct sdap_initgr_nested_state *state;
errno_t ret;
int deref_threshold;
req = tevent_req_create(memctx, &state, struct sdap_initgr_nested_state);
if (!req) return NULL;
state->ev = ev;
state->opts = opts;
state->sysdb = sysdb;
state->dom = dom;
state->sh = sh;
state->grp_attrs = grp_attrs;
state->user = user;
state->op = NULL;
ret = sdap_get_user_primary_name(memctx, opts, user, dom, &state->username);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "User entry had no username\n");
goto immediate;
}
ret = sysdb_attrs_get_el(state->user, SYSDB_MEMBEROF, &state->memberof);
if (ret || !state->memberof || state->memberof->num_values == 0) {
DEBUG(SSSDBG_CONF_SETTINGS, "User entry lacks original memberof ?\n");
/* We can't find any groups for this user, so we'll
* have to assume there aren't any. Just return
* success here.
*/
ret = EOK;
goto immediate;
}
state->groups = talloc_zero_array(state, struct sysdb_attrs *,
state->memberof->num_values + 1);;
if (!state->groups) {
ret = ENOMEM;
goto immediate;
}
state->groups_cur = 0;
deref_threshold = dp_opt_get_int(state->opts->basic,
SDAP_DEREF_THRESHOLD);
if (sdap_has_deref_support(state->sh, state->opts) &&
deref_threshold < state->memberof->num_values) {
ret = sysdb_attrs_get_string(user, SYSDB_ORIG_DN,
&state->orig_dn);
if (ret != EOK) goto immediate;
ret = sdap_initgr_nested_deref_search(req);
if (ret != EAGAIN) goto immediate;
} else {
ret = sdap_initgr_nested_noderef_search(req);
if (ret != EAGAIN) goto immediate;
}
return req;
immediate:
if (ret == EOK) {
tevent_req_done(req);
} else {
tevent_req_error(req, ret);
}
tevent_req_post(req, ev);
return req;
}
static errno_t sdap_initgr_nested_noderef_search(struct tevent_req *req)
{
int i;
struct tevent_req *subreq;
struct sdap_initgr_nested_state *state;
char *oc_list;
state = tevent_req_data(req, struct sdap_initgr_nested_state);
state->group_dns = talloc_array(state, char *,
state->memberof->num_values + 1);
if (!state->group_dns) {
return ENOMEM;
}
for (i = 0; i < state->memberof->num_values; i++) {
state->group_dns[i] = talloc_strdup(state->group_dns,
(char *)state->memberof->values[i].data);
if (!state->group_dns[i]) {
return ENOMEM;
}
}
state->group_dns[i] = NULL; /* terminate */
state->cur = 0;
oc_list = sdap_make_oc_list(state, state->opts->group_map);
if (oc_list == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to create objectClass list.\n");
return ENOMEM;
}
state->filter = talloc_asprintf(state, "(&(%s)(%s=*))", oc_list,
state->opts->group_map[SDAP_AT_GROUP_NAME].name);
if (!state->filter) {
return ENOMEM;
}
subreq = sdap_get_generic_send(state, state->ev, state->opts, state->sh,
state->group_dns[state->cur],
LDAP_SCOPE_BASE,
state->filter, state->grp_attrs,
state->opts->group_map, SDAP_OPTS_GROUP,
dp_opt_get_int(state->opts->basic,
SDAP_SEARCH_TIMEOUT),
false);
if (!subreq) {
return ENOMEM;
}
tevent_req_set_callback(subreq, sdap_initgr_nested_search, req);
return EAGAIN;
}
static void sdap_initgr_nested_deref_done(struct tevent_req *subreq);
static errno_t sdap_initgr_nested_deref_search(struct tevent_req *req)
{
struct tevent_req *subreq;
struct sdap_attr_map_info *maps;
const int num_maps = 1;
const char **sdap_attrs;
errno_t ret;
int timeout;
struct sdap_initgr_nested_state *state;
state = tevent_req_data(req, struct sdap_initgr_nested_state);
maps = talloc_array(state, struct sdap_attr_map_info, num_maps+1);
if (!maps) return ENOMEM;
maps[0].map = state->opts->group_map;
maps[0].num_attrs = SDAP_OPTS_GROUP;
maps[1].map = NULL;
ret = build_attrs_from_map(state, state->opts->group_map, SDAP_OPTS_GROUP,
NULL, &sdap_attrs, NULL);
if (ret != EOK) goto fail;
timeout = dp_opt_get_int(state->opts->basic, SDAP_SEARCH_TIMEOUT);
subreq = sdap_deref_search_send(state, state->ev, state->opts,
state->sh, state->orig_dn,
state->opts->user_map[SDAP_AT_USER_MEMBEROF].name,
sdap_attrs, num_maps, maps, timeout);
if (!subreq) {
ret = EIO;
goto fail;
}
talloc_steal(subreq, sdap_attrs);
talloc_steal(subreq, maps);
tevent_req_set_callback(subreq, sdap_initgr_nested_deref_done, req);
return EAGAIN;
fail:
talloc_free(sdap_attrs);
talloc_free(maps);
return ret;
}
static void sdap_initgr_nested_deref_done(struct tevent_req *subreq)
{
errno_t ret;
struct tevent_req *req;
struct sdap_initgr_nested_state *state;
size_t num_results;
size_t i;
struct sdap_deref_attrs **deref_result;
req = tevent_req_callback_data(subreq, struct tevent_req);
state = tevent_req_data(req, struct sdap_initgr_nested_state);
ret = sdap_deref_search_recv(subreq, state,
&num_results,
&deref_result);
talloc_zfree(subreq);
if (ret == ENOTSUP) {
ret = sdap_initgr_nested_noderef_search(req);
if (ret != EAGAIN) {
if (ret == EOK) {
tevent_req_done(req);
} else {
tevent_req_error(req, ret);
}
}
return;
} else if (ret != EOK && ret != ENOENT) {
tevent_req_error(req, ret);
return;
} else if (ret == ENOENT || deref_result == NULL) {
/* Nothing could be dereferenced. Done. */
tevent_req_done(req);
return;
}
for (i=0; i < num_results; i++) {
state->groups[i] = talloc_steal(state->groups,
deref_result[i]->attrs);
}
state->groups_cur = num_results;
sdap_initgr_nested_store(req);
}
static void sdap_initgr_nested_search(struct tevent_req *subreq)
{
struct tevent_req *req;
struct sdap_initgr_nested_state *state;
struct sysdb_attrs **groups;
size_t count;
int ret;
req = tevent_req_callback_data(subreq, struct tevent_req);
state = tevent_req_data(req, struct sdap_initgr_nested_state);
ret = sdap_get_generic_recv(subreq, state, &count, &groups);
talloc_zfree(subreq);
if (ret) {
tevent_req_error(req, ret);
return;
}
if (count == 1) {
state->groups[state->groups_cur] = talloc_steal(state->groups,
groups[0]);
state->groups_cur++;
} else {
DEBUG(SSSDBG_OP_FAILURE,
"Search for group %s, returned %zu results. Skipping\n",
state->group_dns[state->cur], count);
}
state->cur++;
/* note that state->memberof->num_values is the count of original
* memberOf which might not be only groups, but permissions, etc.
* Use state->groups_cur for group index cap */
if (state->cur < state->memberof->num_values) {
subreq = sdap_get_generic_send(state, state->ev,
state->opts, state->sh,
state->group_dns[state->cur],
LDAP_SCOPE_BASE,
state->filter, state->grp_attrs,
state->opts->group_map,
SDAP_OPTS_GROUP,
dp_opt_get_int(state->opts->basic,
SDAP_SEARCH_TIMEOUT),
false);
if (!subreq) {
tevent_req_error(req, ENOMEM);
return;
}
tevent_req_set_callback(subreq, sdap_initgr_nested_search, req);
} else {
sdap_initgr_nested_store(req);
}
}
static errno_t
sdap_initgr_store_groups(struct sdap_initgr_nested_state *state);
static errno_t
sdap_initgr_store_group_memberships(struct sdap_initgr_nested_state *state);
static errno_t
sdap_initgr_store_user_memberships(struct sdap_initgr_nested_state *state);
static void sdap_initgr_nested_store(struct tevent_req *req)
{
errno_t ret;
struct sdap_initgr_nested_state *state;
bool in_transaction = false;
errno_t tret;
state = tevent_req_data(req, struct sdap_initgr_nested_state);
ret = sysdb_transaction_start(state->sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to start transaction\n");
goto fail;
}
in_transaction = true;
/* save the groups if they are not already */
ret = sdap_initgr_store_groups(state);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE, "Could not save groups [%d]: %s\n",
ret, strerror(ret));
goto fail;
}
/* save the group memberships */
ret = sdap_initgr_store_group_memberships(state);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"Could not save group memberships [%d]: %s\n",
ret, strerror(ret));
goto fail;
}
/* save the user memberships */
ret = sdap_initgr_store_user_memberships(state);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"Could not save user memberships [%d]: %s\n",
ret, strerror(ret));
goto fail;
}
ret = sysdb_transaction_commit(state->sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to commit transaction\n");
goto fail;
}
in_transaction = false;
tevent_req_done(req);
return;
fail:
if (in_transaction) {
tret = sysdb_transaction_cancel(state->sysdb);
if (tret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to cancel transaction\n");
}
}
tevent_req_error(req, ret);
return;
}
static errno_t
sdap_initgr_store_groups(struct sdap_initgr_nested_state *state)
{
return sdap_nested_groups_store(state->sysdb, state->dom,
state->opts, state->groups,
state->groups_cur);
}
static errno_t
sdap_initgr_nested_get_membership_diff(TALLOC_CTX *mem_ctx,
struct sysdb_ctx *sysdb,
struct sdap_options *opts,
struct sss_domain_info *dom,
struct sysdb_attrs *group,
struct sysdb_attrs **all_groups,
int groups_count,
struct membership_diff **mdiff);
static int sdap_initgr_nested_get_direct_parents(TALLOC_CTX *mem_ctx,
struct sysdb_attrs *attrs,
struct sysdb_attrs **groups,
int ngroups,
struct sysdb_attrs ***_direct_parents,
int *_ndirect);
static errno_t
sdap_initgr_store_group_memberships(struct sdap_initgr_nested_state *state)
{
errno_t ret;
int i, tret;
TALLOC_CTX *tmp_ctx;
struct membership_diff *miter = NULL;
struct membership_diff *memberships = NULL;
bool in_transaction = false;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
/* Compute the diffs first in order to keep the transaction as small
* as possible
*/
for (i=0; i < state->groups_cur; i++) {
ret = sdap_initgr_nested_get_membership_diff(tmp_ctx, state->sysdb,
state->opts, state->dom,
state->groups[i],
state->groups,
state->groups_cur,
&miter);
if (ret) {
DEBUG(SSSDBG_MINOR_FAILURE,
"Could not compute memberships for group %d [%d]: %s\n",
i, ret, strerror(ret));
goto done;
}
DLIST_ADD(memberships, miter);
}
ret = sysdb_transaction_start(state->sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to start transaction\n");
goto done;
}
in_transaction = true;
DLIST_FOR_EACH(miter, memberships) {
ret = sysdb_update_members(state->dom, miter->name,
SYSDB_MEMBER_GROUP,
(const char *const *) miter->add,
(const char *const *) miter->del);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE, "Failed to update memberships\n");
goto done;
}
}
ret = sysdb_transaction_commit(state->sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to commit transaction\n");
goto done;
}
in_transaction = false;
ret = EOK;
done:
if (in_transaction) {
tret = sysdb_transaction_cancel(state->sysdb);
if (tret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to cancel transaction\n");
}
}
talloc_free(tmp_ctx);
return ret;
}
static errno_t
sdap_initgr_store_user_memberships(struct sdap_initgr_nested_state *state)
{
errno_t ret;
int tret;
const char *orig_dn;
char **sysdb_parent_name_list = NULL;
char **ldap_parent_name_list = NULL;
int nparents;
struct sysdb_attrs **ldap_parentlist;
struct ldb_message_element *el;
int i, mi;
char **add_groups;
char **del_groups;
TALLOC_CTX *tmp_ctx;
bool in_transaction = false;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) {
ret = ENOMEM;
goto done;
}
/* Get direct LDAP parents */
ret = sysdb_attrs_get_string(state->user, SYSDB_ORIG_DN, &orig_dn);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, "The user has no original DN\n");
goto done;
}
ldap_parentlist = talloc_zero_array(tmp_ctx, struct sysdb_attrs *,
state->groups_cur + 1);
if (!ldap_parentlist) {
ret = ENOMEM;
goto done;
}
nparents = 0;
for (i=0; i < state->groups_cur ; i++) {
ret = sysdb_attrs_get_el(state->groups[i], SYSDB_MEMBER, &el);
if (ret) {
DEBUG(SSSDBG_MINOR_FAILURE,
"A group with no members during initgroups?\n");
goto done;
}
for (mi = 0; mi < el->num_values; mi++) {
if (strcasecmp((const char *) el->values[mi].data, orig_dn) != 0) {
continue;
}
ldap_parentlist[nparents] = state->groups[i];
nparents++;
}
}
DEBUG(SSSDBG_TRACE_LIBS,
"The user %s is a direct member of %d LDAP groups\n",
state->username, nparents);
if (nparents == 0) {
ldap_parent_name_list = NULL;
} else {
ret = sysdb_attrs_primary_name_list(state->sysdb, tmp_ctx,
ldap_parentlist,
nparents,
state->opts->group_map[SDAP_AT_GROUP_NAME].name,
&ldap_parent_name_list);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE,
"sysdb_attrs_primary_name_list failed [%d]: %s\n",
ret, strerror(ret));
goto done;
}
}
ret = sysdb_get_direct_parents(tmp_ctx, state->dom, SYSDB_MEMBER_USER,
state->username, &sysdb_parent_name_list);
if (ret) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Could not get direct sysdb parents for %s: %d [%s]\n",
state->username, ret, strerror(ret));
goto done;
}
ret = diff_string_lists(tmp_ctx,
ldap_parent_name_list, sysdb_parent_name_list,
&add_groups, &del_groups, NULL);
if (ret != EOK) {
goto done;
}
ret = sysdb_transaction_start(state->sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to start transaction\n");
goto done;
}
in_transaction = true;
DEBUG(SSSDBG_TRACE_INTERNAL,
"Updating memberships for %s\n", state->username);
ret = sysdb_update_members(state->dom, state->username, SYSDB_MEMBER_USER,
(const char *const *) add_groups,
(const char *const *) del_groups);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Could not update sysdb memberships for %s: %d [%s]\n",
state->username, ret, strerror(ret));
goto done;
}
ret = sysdb_transaction_commit(state->sysdb);
if (ret != EOK) {
goto done;
}
in_transaction = false;
ret = EOK;
done:
if (in_transaction) {
tret = sysdb_transaction_cancel(state->sysdb);
if (tret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to cancel transaction\n");
}
}
talloc_zfree(tmp_ctx);
return ret;
}
static errno_t
sdap_initgr_nested_get_membership_diff(TALLOC_CTX *mem_ctx,
struct sysdb_ctx *sysdb,
struct sdap_options *opts,
struct sss_domain_info *dom,
struct sysdb_attrs *group,
struct sysdb_attrs **all_groups,
int groups_count,
struct membership_diff **_mdiff)
{
errno_t ret;
struct membership_diff *mdiff;
const char *group_name;
struct sysdb_attrs **ldap_parentlist;
int parents_count;
char **ldap_parent_names_list = NULL;
char **sysdb_parents_names_list = NULL;
TALLOC_CTX *tmp_ctx;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) {
ret = ENOMEM;
goto done;
}
/* Get direct sysdb parents */
ret = sdap_get_group_primary_name(tmp_ctx, opts, group, dom, &group_name);
if (ret != EOK) {
goto done;
}
ret = sysdb_get_direct_parents(tmp_ctx, dom, SYSDB_MEMBER_GROUP,
group_name, &sysdb_parents_names_list);
if (ret) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Could not get direct sysdb parents for %s: %d [%s]\n",
group_name, ret, strerror(ret));
goto done;
}
/* For each group, filter only parents from full set */
ret = sdap_initgr_nested_get_direct_parents(tmp_ctx,
group,
all_groups,
groups_count,
&ldap_parentlist,
&parents_count);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Cannot get parent groups for %s [%d]: %s\n",
group_name, ret, strerror(ret));
goto done;
}
DEBUG(SSSDBG_TRACE_LIBS,
"The group %s is a direct member of %d LDAP groups\n",
group_name, parents_count);
if (parents_count > 0) {
ret = sysdb_attrs_primary_name_list(sysdb, tmp_ctx,
ldap_parentlist,
parents_count,
opts->group_map[SDAP_AT_GROUP_NAME].name,
&ldap_parent_names_list);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE,
"sysdb_attrs_primary_name_list failed [%d]: %s\n",
ret, strerror(ret));
goto done;
}
}
ret = build_membership_diff(tmp_ctx, group_name, ldap_parent_names_list,
sysdb_parents_names_list, &mdiff);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"Could not build membership diff for %s [%d]: %s\n",
group_name, ret, strerror(ret));
goto done;
}
ret = EOK;
*_mdiff = talloc_steal(mem_ctx, mdiff);
done:
talloc_free(tmp_ctx);
return ret;
}
static int sdap_initgr_nested_get_direct_parents(TALLOC_CTX *mem_ctx,
struct sysdb_attrs *attrs,
struct sysdb_attrs **groups,
int ngroups,
struct sysdb_attrs ***_direct_parents,
int *_ndirect)
{
TALLOC_CTX *tmp_ctx;
struct ldb_message_element *member;
int i, mi;
int ret;
const char *orig_dn;
int ndirect;
struct sysdb_attrs **direct_groups;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
direct_groups = talloc_zero_array(tmp_ctx, struct sysdb_attrs *,
ngroups + 1);
if (!direct_groups) {
ret = ENOMEM;
goto done;
}
ndirect = 0;
ret = sysdb_attrs_get_string(attrs, SYSDB_ORIG_DN, &orig_dn);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE, "Missing originalDN\n");
goto done;
}
DEBUG(SSSDBG_TRACE_ALL,
"Looking up direct parents for group [%s]\n", orig_dn);
/* FIXME - Filter only parents from full set to avoid searching
* through all members of huge groups. That requires asking for memberOf
* with the group LDAP search
*/
/* Filter only direct parents from the list of all groups */
for (i=0; i < ngroups; i++) {
ret = sysdb_attrs_get_el(groups[i], SYSDB_MEMBER, &member);
if (ret) {
DEBUG(SSSDBG_TRACE_LIBS,
"A group with no members during initgroups?\n");
continue;
}
for (mi = 0; mi < member->num_values; mi++) {
if (strcasecmp((const char *) member->values[mi].data, orig_dn) != 0) {
continue;
}
direct_groups[ndirect] = groups[i];
ndirect++;
}
}
direct_groups[ndirect] = NULL;
DEBUG(SSSDBG_TRACE_ALL,
"The group [%s] has %d direct parents\n", orig_dn, ndirect);
*_direct_parents = talloc_steal(mem_ctx, direct_groups);
*_ndirect = ndirect;
ret = EOK;
done:
talloc_zfree(tmp_ctx);
return ret;
}
static int sdap_initgr_nested_recv(struct tevent_req *req)
{
TEVENT_REQ_RETURN_ON_ERROR(req);
return EOK;
}
/* ==Initgr-call-(groups-a-user-is-member-of)-RFC2307-BIS================= */
struct sdap_initgr_rfc2307bis_state {
struct tevent_context *ev;
struct sysdb_ctx *sysdb;
struct sdap_options *opts;
struct sss_domain_info *dom;
struct sdap_handle *sh;
const char *name;
char *base_filter;
char *filter;
const char **attrs;
const char *orig_dn;
int timeout;
size_t base_iter;
struct sdap_search_base **search_bases;
struct sdap_op *op;
hash_table_t *group_hash;
size_t num_direct_parents;
struct sysdb_attrs **direct_groups;
};
struct sdap_nested_group {
struct sysdb_attrs *group;
struct sysdb_attrs **ldap_parents;
size_t parents_count;
};
static errno_t sdap_initgr_rfc2307bis_next_base(struct tevent_req *req);
static void sdap_initgr_rfc2307bis_process(struct tevent_req *subreq);
static void sdap_initgr_rfc2307bis_done(struct tevent_req *subreq);
errno_t save_rfc2307bis_user_memberships(
struct sdap_initgr_rfc2307bis_state *state);
struct tevent_req *rfc2307bis_nested_groups_send(
TALLOC_CTX *mem_ctx, struct tevent_context *ev,
struct sdap_options *opts, struct sysdb_ctx *sysdb,
struct sss_domain_info *dom, struct sdap_handle *sh,
struct sdap_search_base **search_bases,
struct sysdb_attrs **groups, size_t num_groups,
hash_table_t *group_hash, size_t nesting);
static errno_t rfc2307bis_nested_groups_recv(struct tevent_req *req);
static struct tevent_req *sdap_initgr_rfc2307bis_send(
TALLOC_CTX *memctx,
struct tevent_context *ev,
struct sdap_options *opts,
struct sdap_domain *sdom,
struct sdap_handle *sh,
const char *name,
const char *orig_dn)
{
errno_t ret;
struct tevent_req *req;
struct sdap_initgr_rfc2307bis_state *state;
const char **attr_filter;
char *clean_orig_dn;
bool use_id_mapping;
char *oc_list;
req = tevent_req_create(memctx, &state, struct sdap_initgr_rfc2307bis_state);
if (!req) return NULL;
state->ev = ev;
state->opts = opts;
state->sysdb = sdom->dom->sysdb;
state->dom = sdom->dom;
state->sh = sh;
state->op = NULL;
state->name = name;
state->direct_groups = NULL;
state->num_direct_parents = 0;
state->timeout = dp_opt_get_int(state->opts->basic, SDAP_SEARCH_TIMEOUT);
state->base_iter = 0;
state->search_bases = sdom->group_search_bases;
state->orig_dn = orig_dn;
if (!state->search_bases) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Initgroups lookup request without a group search base\n");
ret = EINVAL;
goto done;
}
ret = sss_hash_create(state, 32, &state->group_hash);
if (ret != EOK) {
talloc_free(req);
return NULL;
}
attr_filter = talloc_array(state, const char *, 2);
if (!attr_filter) {
ret = ENOMEM;
goto done;
}
attr_filter[0] = opts->group_map[SDAP_AT_GROUP_MEMBER].name;
attr_filter[1] = NULL;
ret = build_attrs_from_map(state, opts->group_map, SDAP_OPTS_GROUP,
attr_filter, &state->attrs, NULL);
if (ret != EOK) goto done;
ret = sss_filter_sanitize(state, orig_dn, &clean_orig_dn);
if (ret != EOK) goto done;
use_id_mapping = sdap_idmap_domain_has_algorithmic_mapping(
opts->idmap_ctx,
sdom->dom->name,
sdom->dom->domain_id);
oc_list = sdap_make_oc_list(state, opts->group_map);
if (oc_list == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to create objectClass list.\n");
ret = ENOMEM;
goto done;
}
state->base_filter =
talloc_asprintf(state,
"(&(%s=%s)(%s)(%s=*)",
opts->group_map[SDAP_AT_GROUP_MEMBER].name,
clean_orig_dn, oc_list,
opts->group_map[SDAP_AT_GROUP_NAME].name);
if (!state->base_filter) {
ret = ENOMEM;
goto done;
}
if (use_id_mapping) {
/* When mapping IDs or looking for SIDs, we don't want to limit
* ourselves to groups with a GID value. But there must be a SID to map
* from.
*/
state->base_filter = talloc_asprintf_append(state->base_filter,
"(%s=*))",
opts->group_map[SDAP_AT_GROUP_OBJECTSID].name);
} else {
state->base_filter = talloc_asprintf_append(state->base_filter, ")");
}
if (!state->base_filter) {
talloc_zfree(req);
return NULL;
}
talloc_zfree(clean_orig_dn);
ret = sdap_initgr_rfc2307bis_next_base(req);
done:
if (ret != EOK) {
tevent_req_error(req, ret);
tevent_req_post(req, ev);
}
return req;
}
static errno_t sdap_initgr_rfc2307bis_next_base(struct tevent_req *req)
{
struct tevent_req *subreq;
struct sdap_initgr_rfc2307bis_state *state;
state = tevent_req_data(req, struct sdap_initgr_rfc2307bis_state);
talloc_zfree(state->filter);
state->filter = sdap_combine_filters(state, state->base_filter,
state->search_bases[state->base_iter]->filter);
if (!state->filter) {
return ENOMEM;
}
DEBUG(SSSDBG_TRACE_FUNC,
"Searching for parent groups for user [%s] with base [%s]\n",
state->orig_dn, state->search_bases[state->base_iter]->basedn);
subreq = sdap_get_generic_send(
state, state->ev, state->opts, state->sh,
state->search_bases[state->base_iter]->basedn,
state->search_bases[state->base_iter]->scope,
state->filter, state->attrs,
state->opts->group_map, SDAP_OPTS_GROUP,
state->timeout,
true);
if (!subreq) {
return ENOMEM;
}
tevent_req_set_callback(subreq, sdap_initgr_rfc2307bis_process, req);
return EOK;
}
static void sdap_initgr_rfc2307bis_process(struct tevent_req *subreq)
{
struct tevent_req *req;
struct sdap_initgr_rfc2307bis_state *state;
struct sysdb_attrs **ldap_groups;
size_t count;
size_t i;
int ret;
req = tevent_req_callback_data(subreq, struct tevent_req);
state = tevent_req_data(req, struct sdap_initgr_rfc2307bis_state);
ret = sdap_get_generic_recv(subreq, state,
&count,
&ldap_groups);
talloc_zfree(subreq);
if (ret) {
tevent_req_error(req, ret);
return;
}
DEBUG(SSSDBG_TRACE_LIBS,
"Found %zu parent groups for user [%s]\n", count, state->name);
/* Add this batch of groups to the list */
if (count > 0) {
state->direct_groups =
talloc_realloc(state,
state->direct_groups,
struct sysdb_attrs *,
state->num_direct_parents + count + 1);
if (!state->direct_groups) {
tevent_req_error(req, ENOMEM);
return;
}
/* Copy the new groups into the list.
*/
for (i = 0; i < count; i++) {
state->direct_groups[state->num_direct_parents + i] =
talloc_steal(state->direct_groups, ldap_groups[i]);
}
state->num_direct_parents += count;
state->direct_groups[state->num_direct_parents] = NULL;
}
state->base_iter++;
/* Check for additional search bases, and iterate
* through again.
*/
if (state->search_bases[state->base_iter] != NULL) {
ret = sdap_initgr_rfc2307bis_next_base(req);
if (ret != EOK) {
tevent_req_error(req, ret);
}
return;
}
if (state->num_direct_parents == 0) {
/* Start a transaction to look up the groups in the sysdb
* and update them with LDAP data
*/
ret = save_rfc2307bis_user_memberships(state);
if (ret != EOK) {
tevent_req_error(req, ret);
} else {
tevent_req_done(req);
}
return;
}
subreq = rfc2307bis_nested_groups_send(state, state->ev, state->opts,
state->sysdb, state->dom,
state->sh,
state->search_bases,
state->direct_groups,
state->num_direct_parents,
state->group_hash, 0);
if (!subreq) {
tevent_req_error(req, EIO);
return;
}
tevent_req_set_callback(subreq, sdap_initgr_rfc2307bis_done, req);
}
static errno_t
save_rfc2307bis_groups(struct sdap_initgr_rfc2307bis_state *state);
static errno_t
save_rfc2307bis_group_memberships(struct sdap_initgr_rfc2307bis_state *state);
static void sdap_initgr_rfc2307bis_done(struct tevent_req *subreq)
{
errno_t ret;
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct sdap_initgr_rfc2307bis_state *state =
tevent_req_data(req, struct sdap_initgr_rfc2307bis_state);
bool in_transaction = false;
errno_t tret;
ret = rfc2307bis_nested_groups_recv(subreq);
talloc_zfree(subreq);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
ret = sysdb_transaction_start(state->sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to start transaction\n");
goto fail;
}
in_transaction = true;
/* save the groups if they are not cached */
ret = save_rfc2307bis_groups(state);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"Could not save groups memberships [%d]\n", ret);
goto fail;
}
/* save the group membership */
ret = save_rfc2307bis_group_memberships(state);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"Could not save group memberships [%d]\n", ret);
goto fail;
}
/* save the user memberships */
ret = save_rfc2307bis_user_memberships(state);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"Could not save user memberships [%d]\n", ret);
goto fail;
}
ret = sysdb_transaction_commit(state->sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to commit transaction\n");
goto fail;
}
in_transaction = false;
tevent_req_done(req);
return;
fail:
if (in_transaction) {
tret = sysdb_transaction_cancel(state->sysdb);
if (tret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to cancel transaction\n");
}
}
tevent_req_error(req, ret);
return;
}
static int sdap_initgr_rfc2307bis_recv(struct tevent_req *req)
{
TEVENT_REQ_RETURN_ON_ERROR(req);
return EOK;
}
struct rfc2307bis_group_memberships_state {
struct sysdb_ctx *sysdb;
struct sdap_options *opts;
struct sss_domain_info *dom;
hash_table_t *group_hash;
struct membership_diff *memberships;
int ret;
};
static errno_t
save_rfc2307bis_groups(struct sdap_initgr_rfc2307bis_state *state)
{
struct sysdb_attrs **groups = NULL;
unsigned long count;
hash_value_t *values;
int hret, i;
errno_t ret;
TALLOC_CTX *tmp_ctx;
struct sdap_nested_group *gr;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
hret = hash_values(state->group_hash, &count, &values);
if (hret != HASH_SUCCESS) {
ret = EIO;
goto done;
}
groups = talloc_array(tmp_ctx, struct sysdb_attrs *, count);
if (!groups) {
ret = ENOMEM;
goto done;
}
for (i = 0; i < count; i++) {
gr = talloc_get_type(values[i].ptr,
struct sdap_nested_group);
groups[i] = gr->group;
}
talloc_zfree(values);
ret = sdap_nested_groups_store(state->sysdb, state->dom, state->opts,
groups, count);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE, "Could not save groups [%d]: %s\n",
ret, strerror(ret));
goto done;
}
ret = EOK;
done:
talloc_free(tmp_ctx);
return ret;
}
static bool rfc2307bis_group_memberships_build(hash_entry_t *item, void *user_data);
static errno_t
save_rfc2307bis_group_memberships(struct sdap_initgr_rfc2307bis_state *state)
{
errno_t ret, tret;
int hret;
TALLOC_CTX *tmp_ctx;
struct rfc2307bis_group_memberships_state *membership_state;
struct membership_diff *iter;
struct membership_diff *iter_start;
struct membership_diff *iter_tmp;
bool in_transaction = false;
int num_added;
int i;
int grp_count;
char **add = NULL;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
membership_state = talloc_zero(tmp_ctx,
struct rfc2307bis_group_memberships_state);
if (!membership_state) {
ret = ENOMEM;
goto done;
}
membership_state->sysdb = state->sysdb;
membership_state->dom = state->dom;
membership_state->opts = state->opts;
membership_state->group_hash = state->group_hash;
hret = hash_iterate(state->group_hash,
rfc2307bis_group_memberships_build,
membership_state);
if (hret != HASH_SUCCESS) {
ret = membership_state->ret;
goto done;
}
ret = sysdb_transaction_start(state->sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to start transaction\n");
goto done;
}
in_transaction = true;
iter_start = membership_state->memberships;
DLIST_FOR_EACH(iter, membership_state->memberships) {
/* Create a copy of iter->add array but do not include groups outside
* nesting limit. This array must be NULL terminated.
*/
for (grp_count = 0; iter->add[grp_count]; grp_count++);
add = talloc_zero_array(tmp_ctx, char *, grp_count + 1);
if (add == NULL) {
ret = ENOMEM;
goto done;
}
num_added = 0;
for (i = 0; i < grp_count; i++) {
DLIST_FOR_EACH(iter_tmp, iter_start) {
if (!strcmp(iter_tmp->name,iter->add[i])) {
add[num_added] = iter->add[i];
num_added++;
break;
}
}
}
if (num_added == 0) {
add = NULL;
} else {
add[num_added] = NULL;
}
ret = sysdb_update_members(state->dom, iter->name,
SYSDB_MEMBER_GROUP,
(const char *const *) add,
(const char *const *) iter->del);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE, "Failed to update memberships\n");
goto done;
}
}
ret = sysdb_transaction_commit(state->sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to commit transaction\n");
goto done;
}
in_transaction = false;
ret = EOK;
done:
if (in_transaction) {
tret = sysdb_transaction_cancel(state->sysdb);
if (tret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to cancel transaction\n");
}
}
talloc_free(tmp_ctx);
return ret;
}
static bool
rfc2307bis_group_memberships_build(hash_entry_t *item, void *user_data)
{
struct rfc2307bis_group_memberships_state *mstate = talloc_get_type(
user_data, struct rfc2307bis_group_memberships_state);
struct sdap_nested_group *group;
char *group_name;
TALLOC_CTX *tmp_ctx;
errno_t ret;
char **sysdb_parents_names_list;
char **ldap_parents_names_list = NULL;
struct membership_diff *mdiff;
group_name = (char *) item->key.str;
group = (struct sdap_nested_group *) item->value.ptr;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) {
ret = ENOMEM;
goto done;
}
ret = sysdb_get_direct_parents(tmp_ctx, mstate->dom, SYSDB_MEMBER_GROUP,
group_name, &sysdb_parents_names_list);
if (ret) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Could not get direct sysdb parents for %s: %d [%s]\n",
group_name, ret, strerror(ret));
goto done;
}
if (group->parents_count > 0) {
ret = sysdb_attrs_primary_name_list(mstate->sysdb, tmp_ctx,
group->ldap_parents, group->parents_count,
mstate->opts->group_map[SDAP_AT_GROUP_NAME].name,
&ldap_parents_names_list);
if (ret != EOK) {
goto done;
}
}
ret = build_membership_diff(tmp_ctx, group_name, ldap_parents_names_list,
sysdb_parents_names_list, &mdiff);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"Could not build membership diff for %s [%d]: %s\n",
group_name, ret, strerror(ret));
goto done;
}
talloc_steal(mstate, mdiff);
DLIST_ADD(mstate->memberships, mdiff);
ret = EOK;
done:
talloc_free(tmp_ctx);
mstate->ret = ret;
return ret == EOK ? true : false;
}
errno_t save_rfc2307bis_user_memberships(
struct sdap_initgr_rfc2307bis_state *state)
{
errno_t ret, tret;
char **ldap_grouplist;
char **sysdb_parent_name_list;
char **add_groups;
char **del_groups;
bool in_transaction = false;
size_t c;
char *tmp_str;
TALLOC_CTX *tmp_ctx = talloc_new(NULL);
if(!tmp_ctx) {
return ENOMEM;
}
DEBUG(SSSDBG_TRACE_LIBS, "Save parent groups to sysdb\n");
ret = sysdb_transaction_start(state->sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to start transaction\n");
goto error;
}
in_transaction = true;
ret = sysdb_get_direct_parents(tmp_ctx, state->dom, SYSDB_MEMBER_USER,
state->name, &sysdb_parent_name_list);
if (ret) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Could not get direct sysdb parents for %s: %d [%s]\n",
state->name, ret, strerror(ret));
goto error;
}
if (state->num_direct_parents == 0) {
ldap_grouplist = NULL;
}
else {
ret = sysdb_attrs_primary_name_list(
state->sysdb, tmp_ctx,
state->direct_groups, state->num_direct_parents,
state->opts->group_map[SDAP_AT_GROUP_NAME].name,
&ldap_grouplist);
if (ret != EOK) {
goto error;
}
if (IS_SUBDOMAIN(state->dom)) {
for (c = 0; ldap_grouplist[c] != NULL; c++) {
tmp_str = sss_tc_fqname(ldap_grouplist, state->dom->names,
state->dom, ldap_grouplist[c]);
if (tmp_str == NULL) {
DEBUG(SSSDBG_OP_FAILURE, "sss_tc_fqname failed.\n");
ret = ENOMEM;
goto error;
}
talloc_free(ldap_grouplist[c]);
ldap_grouplist[c] = tmp_str;
}
}
}
/* Find the differences between the sysdb and ldap lists
* Groups in ldap only must be added to the sysdb;
* groups in the sysdb only must be removed.
*/
ret = diff_string_lists(tmp_ctx,
ldap_grouplist, sysdb_parent_name_list,
&add_groups, &del_groups, NULL);
if (ret != EOK) {
goto error;
}
DEBUG(SSSDBG_TRACE_INTERNAL, "Updating memberships for %s\n", state->name);
ret = sysdb_update_members(state->dom, state->name, SYSDB_MEMBER_USER,
(const char *const *)add_groups,
(const char *const *)del_groups);
if (ret != EOK) {
goto error;
}
ret = sysdb_transaction_commit(state->sysdb);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to commit transaction\n");
goto error;
}
in_transaction = false;
talloc_free(tmp_ctx);
return EOK;
error:
if (in_transaction) {
tret = sysdb_transaction_cancel(state->sysdb);
if (tret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to cancel transaction\n");
}
}
talloc_free(tmp_ctx);
return ret;
}
struct sdap_rfc2307bis_nested_ctx {
struct tevent_context *ev;
struct sdap_options *opts;
struct sysdb_ctx *sysdb;
struct sss_domain_info *dom;
struct sdap_handle *sh;
int timeout;
const char *base_filter;
char *filter;
const char *orig_dn;
const char **attrs;
struct sysdb_attrs **groups;
size_t num_groups;
size_t nesting_level;
size_t group_iter;
struct sdap_nested_group **processed_groups;
hash_table_t *group_hash;
const char *primary_name;
struct sysdb_handle *handle;
size_t base_iter;
struct sdap_search_base **search_bases;
};
static errno_t rfc2307bis_nested_groups_step(struct tevent_req *req);
struct tevent_req *rfc2307bis_nested_groups_send(
TALLOC_CTX *mem_ctx, struct tevent_context *ev,
struct sdap_options *opts, struct sysdb_ctx *sysdb,
struct sss_domain_info *dom, struct sdap_handle *sh,
struct sdap_search_base **search_bases,
struct sysdb_attrs **groups, size_t num_groups,
hash_table_t *group_hash, size_t nesting)
{
errno_t ret;
struct tevent_req *req;
struct sdap_rfc2307bis_nested_ctx *state;
DEBUG(SSSDBG_TRACE_INTERNAL,
"About to process %zu groups in nesting level %zu\n",
num_groups, nesting);
req = tevent_req_create(mem_ctx, &state,
struct sdap_rfc2307bis_nested_ctx);
if (!req) return NULL;
if ((num_groups == 0) ||
(nesting > dp_opt_get_int(opts->basic, SDAP_NESTING_LEVEL))) {
/* No parent groups to process or too deep*/
ret = EOK;
goto done;
}
state->ev = ev;
state->opts = opts;
state->sysdb = sysdb;
state->dom = dom;
state->sh = sh;
state->groups = groups;
state->num_groups = num_groups;
state->group_iter = 0;
state->nesting_level = nesting;
state->group_hash = group_hash;
state->filter = NULL;
state->timeout = dp_opt_get_int(state->opts->basic,
SDAP_SEARCH_TIMEOUT);
state->base_iter = 0;
state->search_bases = search_bases;
if (!state->search_bases) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Initgroups nested lookup request "
"without a group search base\n");
ret = EINVAL;
goto done;
}
state->processed_groups = talloc_array(state,
struct sdap_nested_group *,
state->num_groups);
if (state->processed_groups == NULL) {
ret = ENOMEM;
goto done;
}
while (state->group_iter < state->num_groups) {
ret = rfc2307bis_nested_groups_step(req);
if (ret == EOK) {
/* This group had already been looked up. Continue to
* another group in the same level
*/
state->group_iter++;
continue;
} else {
goto done;
}
}
ret = EOK;
done:
if (ret == EOK) {
/* All parent groups were already processed */
tevent_req_done(req);
tevent_req_post(req, ev);
} else if (ret != EAGAIN) {
tevent_req_error(req, ret);
tevent_req_post(req, ev);
}
/* EAGAIN means a lookup is in progress */
return req;
}
static errno_t rfc2307bis_nested_groups_next_base(struct tevent_req *req);
static void rfc2307bis_nested_groups_process(struct tevent_req *subreq);
static errno_t rfc2307bis_nested_groups_step(struct tevent_req *req)
{
errno_t ret;
TALLOC_CTX *tmp_ctx = NULL;
const char **attr_filter;
char *clean_orig_dn;
hash_key_t key;
hash_value_t value;
struct sdap_rfc2307bis_nested_ctx *state =
tevent_req_data(req, struct sdap_rfc2307bis_nested_ctx);
char *oc_list;
tmp_ctx = talloc_new(state);
if (!tmp_ctx) {
ret = ENOMEM;
goto done;
}
ret = sdap_get_group_primary_name(state, state->opts,
state->groups[state->group_iter],
state->dom, &state->primary_name);
if (ret != EOK) {
goto done;
}
key.type = HASH_KEY_STRING;
key.str = talloc_strdup(state, state->primary_name);
if (!key.str) {
ret = ENOMEM;
goto done;
}
DEBUG(SSSDBG_TRACE_LIBS, "Processing group [%s]\n", state->primary_name);
ret = hash_lookup(state->group_hash, &key, &value);
if (ret == HASH_SUCCESS) {
DEBUG(SSSDBG_TRACE_INTERNAL, "Group [%s] was already processed, "
"taking a shortcut\n", state->primary_name);
state->processed_groups[state->group_iter] =
talloc_get_type(value.ptr, struct sdap_nested_group);
talloc_free(key.str);
ret = EOK;
goto done;
}
/* Need to try to find parent groups for this group. */
state->processed_groups[state->group_iter] =
talloc_zero(state->processed_groups, struct sdap_nested_group);
if (!state->processed_groups[state->group_iter]) {
ret = ENOMEM;
goto done;
}
/* this steal doesn't change much now, but will be helpful later on
* if we steal the whole processed_group on the hash table */
state->processed_groups[state->group_iter]->group =
talloc_steal(state->processed_groups[state->group_iter],
state->groups[state->group_iter]);
/* Get any parent groups for this group */
ret = sysdb_attrs_get_string(state->groups[state->group_iter],
SYSDB_ORIG_DN,
&state->orig_dn);
if (ret != EOK) {
goto done;
}
attr_filter = talloc_array(state, const char *, 2);
if (!attr_filter) {
ret = ENOMEM;
goto done;
}
attr_filter[0] = state->opts->group_map[SDAP_AT_GROUP_MEMBER].name;
attr_filter[1] = NULL;
ret = build_attrs_from_map(state, state->opts->group_map, SDAP_OPTS_GROUP,
attr_filter, &state->attrs, NULL);
if (ret != EOK) {
goto done;
}
ret = sss_filter_sanitize(tmp_ctx, state->orig_dn, &clean_orig_dn);
if (ret != EOK) {
goto done;
}
oc_list = sdap_make_oc_list(state, state->opts->group_map);
if (oc_list == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to create objectClass list.\n");
ret = ENOMEM;
goto done;
}
state->base_filter = talloc_asprintf(
state, "(&(%s=%s)(%s)(%s=*))",
state->opts->group_map[SDAP_AT_GROUP_MEMBER].name,
clean_orig_dn, oc_list,
state->opts->group_map[SDAP_AT_GROUP_NAME].name);
if (!state->base_filter) {
ret = ENOMEM;
goto done;
}
ret = rfc2307bis_nested_groups_next_base(req);
if (ret != EOK) goto done;
/* Still processing parent groups */
ret = EAGAIN;
done:
talloc_free(tmp_ctx);
return ret;
}
static errno_t rfc2307bis_nested_groups_next_base(struct tevent_req *req)
{
struct tevent_req *subreq;
struct sdap_rfc2307bis_nested_ctx *state;
state = tevent_req_data(req, struct sdap_rfc2307bis_nested_ctx);
talloc_zfree(state->filter);
state->filter = sdap_combine_filters(state, state->base_filter,
state->search_bases[state->base_iter]->filter);
if (!state->filter) {
return ENOMEM;
}
DEBUG(SSSDBG_TRACE_FUNC,
"Searching for parent groups of group [%s] with base [%s]\n",
state->orig_dn,
state->search_bases[state->base_iter]->basedn);
subreq = sdap_get_generic_send(
state, state->ev, state->opts, state->sh,
state->search_bases[state->base_iter]->basedn,
state->search_bases[state->base_iter]->scope,
state->filter, state->attrs,
state->opts->group_map, SDAP_OPTS_GROUP,
state->timeout,
true);
if (!subreq) {
return ENOMEM;
}
tevent_req_set_callback(subreq,
rfc2307bis_nested_groups_process,
req);
return EOK;
}
static void
rfc2307bis_nested_groups_iterate(struct tevent_req *req,
struct sdap_rfc2307bis_nested_ctx *state)
{
errno_t ret;
state->group_iter++;
while (state->group_iter < state->num_groups) {
ret = rfc2307bis_nested_groups_step(req);
if (ret == EAGAIN) {
/* Looking up parent groups.. */
return;
} else if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
/* EOK means this group has already been processed
* in another nesting level */
state->group_iter++;
}
if (state->group_iter == state->num_groups) {
/* All groups processed. Done. */
tevent_req_done(req);
}
}
static void rfc2307bis_nested_groups_done(struct tevent_req *subreq);
static void rfc2307bis_nested_groups_process(struct tevent_req *subreq)
{
errno_t ret;
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct sdap_rfc2307bis_nested_ctx *state =
tevent_req_data(req, struct sdap_rfc2307bis_nested_ctx);
size_t count;
size_t i;
struct sysdb_attrs **ldap_groups;
struct sdap_nested_group *ngr;
hash_value_t value;
hash_key_t key;
int hret;
ret = sdap_get_generic_recv(subreq, state,
&count,
&ldap_groups);
talloc_zfree(subreq);
if (ret) {
tevent_req_error(req, ret);
return;
}
DEBUG(SSSDBG_TRACE_LIBS,
"Found %zu parent groups of [%s]\n", count, state->orig_dn);
ngr = state->processed_groups[state->group_iter];
/* Add this batch of groups to the list */
if (count > 0) {
ngr->ldap_parents =
talloc_realloc(ngr,
ngr->ldap_parents,
struct sysdb_attrs *,
ngr->parents_count + count + 1);
if (!ngr->ldap_parents) {
tevent_req_error(req, ENOMEM);
return;
}
/* Copy the new groups into the list.
* They're allocated on 'state' so we need to move them
* onto ldap_parents so that the data won't disappear when
* we finish this nesting level.
*/
for (i = 0; i < count; i++) {
ngr->ldap_parents[ngr->parents_count + i] =
talloc_steal(ngr->ldap_parents, ldap_groups[i]);
}
ngr->parents_count += count;
ngr->ldap_parents[ngr->parents_count] = NULL;
DEBUG(SSSDBG_TRACE_INTERNAL,
"Total of %zu direct parents after this iteration\n",
ngr->parents_count);
}
state->base_iter++;
/* Check for additional search bases, and iterate
* through again.
*/
if (state->search_bases[state->base_iter] != NULL) {
ret = rfc2307bis_nested_groups_next_base(req);
if (ret != EOK) {
tevent_req_error(req, ret);
}
return;
}
/* Reset the base iterator for future lookups */
state->base_iter = 0;
/* Save the group into the hash table */
key.type = HASH_KEY_STRING;
key.str = talloc_strdup(state, state->primary_name);
if (!key.str) {
tevent_req_error(req, ENOMEM);
return;
}
/* Steal the nested group entry on the group_hash context so it can
* outlive this request */
talloc_steal(state->group_hash, ngr);
value.type = HASH_VALUE_PTR;
value.ptr = ngr;
hret = hash_enter(state->group_hash, &key, &value);
if (hret != HASH_SUCCESS) {
talloc_free(key.str);
tevent_req_error(req, EIO);
return;
}
talloc_free(key.str);
if (ngr->parents_count == 0) {
/* No parent groups for this group in LDAP
* Move on to the next group
*/
rfc2307bis_nested_groups_iterate(req, state);
return;
}
/* Otherwise, recurse into the groups */
subreq = rfc2307bis_nested_groups_send(
state, state->ev, state->opts, state->sysdb,
state->dom, state->sh,
state->search_bases,
ngr->ldap_parents,
ngr->parents_count,
state->group_hash,
state->nesting_level+1);
if (!subreq) {
tevent_req_error(req, EIO);
return;
}
tevent_req_set_callback(subreq, rfc2307bis_nested_groups_done, req);
}
static errno_t rfc2307bis_nested_groups_recv(struct tevent_req *req)
{
TEVENT_REQ_RETURN_ON_ERROR(req);
return EOK;
}
static void rfc2307bis_nested_groups_done(struct tevent_req *subreq)
{
errno_t ret;
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct sdap_rfc2307bis_nested_ctx *state =
tevent_req_data(req, struct sdap_rfc2307bis_nested_ctx);
ret = rfc2307bis_nested_groups_recv(subreq);
talloc_zfree(subreq);
if (ret != EOK) {
DEBUG(SSSDBG_TRACE_FUNC, "rfc2307bis_nested failed [%d][%s]\n",
ret, strerror(ret));
tevent_req_error(req, ret);
return;
}
rfc2307bis_nested_groups_iterate(req, state);
}
/* ==Initgr-call-(groups-a-user-is-member-of)============================= */
struct sdap_get_initgr_state {
struct tevent_context *ev;
struct sysdb_ctx *sysdb;
struct sdap_options *opts;
struct sss_domain_info *dom;
struct sdap_domain *sdom;
struct sdap_handle *sh;
struct sdap_id_ctx *id_ctx;
struct sdap_id_conn_ctx *conn;
const char *name;
const char **grp_attrs;
const char **user_attrs;
char *user_base_filter;
char *filter;
int timeout;
struct sysdb_attrs *orig_user;
size_t user_base_iter;
struct sdap_search_base **user_search_bases;
bool use_id_mapping;
};
static errno_t sdap_get_initgr_next_base(struct tevent_req *req);
static void sdap_get_initgr_user(struct tevent_req *subreq);
static void sdap_get_initgr_done(struct tevent_req *subreq);
struct tevent_req *sdap_get_initgr_send(TALLOC_CTX *memctx,
struct tevent_context *ev,
struct sdap_domain *sdom,
struct sdap_handle *sh,
struct sdap_id_ctx *id_ctx,
struct sdap_id_conn_ctx *conn,
const char *name,
int name_type,
const char *extra_value,
const char **grp_attrs)
{
struct tevent_req *req;
struct sdap_get_initgr_state *state;
int ret;
char *clean_name;
bool use_id_mapping;
const char *search_attr;
DEBUG(SSSDBG_TRACE_ALL, "Retrieving info for initgroups call\n");
req = tevent_req_create(memctx, &state, struct sdap_get_initgr_state);
if (!req) return NULL;
state->ev = ev;
state->opts = id_ctx->opts;
state->dom = sdom->dom;
state->sysdb = sdom->dom->sysdb;
state->sdom = sdom;
state->sh = sh;
state->id_ctx = id_ctx;
state->conn = conn;
state->name = name;
state->grp_attrs = grp_attrs;
state->orig_user = NULL;
state->timeout = dp_opt_get_int(state->opts->basic, SDAP_SEARCH_TIMEOUT);
state->user_base_iter = 0;
state->user_search_bases = sdom->user_search_bases;
if (!state->user_search_bases) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Initgroups lookup request without a user search base\n");
ret = EINVAL;
goto done;
}
use_id_mapping = sdap_idmap_domain_has_algorithmic_mapping(
id_ctx->opts->idmap_ctx,
sdom->dom->name,
sdom->dom->domain_id);
ret = sss_filter_sanitize(state, name, &clean_name);
if (ret != EOK) {
talloc_zfree(req);
return NULL;
}
if (extra_value && strcmp(extra_value, EXTRA_NAME_IS_UPN) == 0) {
search_attr = state->opts->user_map[SDAP_AT_USER_PRINC].name;
} else {
switch (name_type) {
case BE_FILTER_SECID:
search_attr = state->opts->user_map[SDAP_AT_USER_OBJECTSID].name;
break;
case BE_FILTER_UUID:
search_attr = state->opts->user_map[SDAP_AT_USER_UUID].name;
break;
default:
search_attr = state->opts->user_map[SDAP_AT_USER_NAME].name;
}
}
state->user_base_filter =
talloc_asprintf(state, "(&(%s=%s)(objectclass=%s)",
search_attr, clean_name,
state->opts->user_map[SDAP_OC_USER].name);
if (!state->user_base_filter) {
talloc_zfree(req);
return NULL;
}
if (use_id_mapping) {
/* When mapping IDs or looking for SIDs, we don't want to limit
* ourselves to users with a UID value. But there must be a SID to map
* from.
*/
state->user_base_filter = talloc_asprintf_append(state->user_base_filter,
"(%s=*))",
id_ctx->opts->user_map[SDAP_AT_USER_OBJECTSID].name);
} else {
/* When not ID-mapping, make sure there is a non-NULL UID */
state->user_base_filter = talloc_asprintf_append(state->user_base_filter,
"(&(%s=*)(!(%s=0))))",
id_ctx->opts->user_map[SDAP_AT_USER_UID].name,
id_ctx->opts->user_map[SDAP_AT_USER_UID].name);
}
if (!state->user_base_filter) {
talloc_zfree(req);
return NULL;
}
ret = build_attrs_from_map(state,
state->opts->user_map,
state->opts->user_map_cnt,
NULL, &state->user_attrs, NULL);
if (ret) {
talloc_zfree(req);
return NULL;
}
state->use_id_mapping = sdap_idmap_domain_has_algorithmic_mapping(
state->opts->idmap_ctx,
state->dom->name,
state->dom->domain_id);
ret = sdap_get_initgr_next_base(req);
done:
if (ret != EOK) {
tevent_req_error(req, ret);
tevent_req_post(req, ev);
}
return req;
}
static errno_t sdap_get_initgr_next_base(struct tevent_req *req)
{
struct tevent_req *subreq;
struct sdap_get_initgr_state *state;
state = tevent_req_data(req, struct sdap_get_initgr_state);
talloc_zfree(state->filter);
state->filter = sdap_combine_filters(state, state->user_base_filter,
state->user_search_bases[state->user_base_iter]->filter);
if (!state->filter) {
return ENOMEM;
}
DEBUG(SSSDBG_TRACE_FUNC,
"Searching for users with base [%s]\n",
state->user_search_bases[state->user_base_iter]->basedn);
subreq = sdap_get_generic_send(
state, state->ev, state->opts, state->sh,
state->user_search_bases[state->user_base_iter]->basedn,
state->user_search_bases[state->user_base_iter]->scope,
state->filter, state->user_attrs,
state->opts->user_map, state->opts->user_map_cnt,
state->timeout,
false);
if (!subreq) {
return ENOMEM;
}
tevent_req_set_callback(subreq, sdap_get_initgr_user, req);
return EOK;
}
static void sdap_get_initgr_user(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct sdap_get_initgr_state *state = tevent_req_data(req,
struct sdap_get_initgr_state);
struct sysdb_attrs **usr_attrs;
size_t count;
int ret;
errno_t sret;
const char *orig_dn;
const char *cname;
bool in_transaction = false;
DEBUG(SSSDBG_TRACE_ALL, "Receiving info for the user\n");
ret = sdap_get_generic_recv(subreq, state, &count, &usr_attrs);
talloc_zfree(subreq);
if (ret) {
tevent_req_error(req, ret);
return;
}
if (count == 0) {
/* No users found in this search */
state->user_base_iter++;
if (state->user_search_bases[state->user_base_iter]) {
/* There are more search bases to try */
ret = sdap_get_initgr_next_base(req);
if (ret != EOK) {
tevent_req_error(req, ret);
}
return;
}
/* fallback to fetch a local user if required */
if ((state->opts->schema_type == SDAP_SCHEMA_RFC2307) &&
(dp_opt_get_bool(state->opts->basic,
SDAP_RFC2307_FALLBACK_TO_LOCAL_USERS) == true)) {
ret = sdap_fallback_local_user(state, state->name, -1, &usr_attrs);
} else {
ret = ENOENT;
}
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
} else if (count == 1) {
state->orig_user = usr_attrs[0];
} else if (count != 1) {
DEBUG(SSSDBG_OP_FAILURE,
"Expected one user entry and got %zu\n", count);
ret = sysdb_try_to_find_expected_dn(state->dom, "dc", usr_attrs, count,
&state->orig_user);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE,
"try_to_find_expected_dn failed. No matching DN found.\n");
tevent_req_error(req, EINVAL);
return;
}
}
ret = sysdb_transaction_start(state->sysdb);
if (ret) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to start transaction\n");
goto fail;
}
in_transaction = true;
DEBUG(SSSDBG_TRACE_ALL, "Storing the user\n");
ret = sdap_save_user(state, state->opts, state->dom, state->orig_user,
NULL, 0);
if (ret) {
goto fail;
}
DEBUG(SSSDBG_TRACE_ALL, "Commit change\n");
ret = sysdb_transaction_commit(state->sysdb);
if (ret) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to commit transaction\n");
goto fail;
}
in_transaction = false;
ret = sysdb_get_real_name(state, state->dom, state->name, &cname);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, "Cannot canonicalize username\n");
tevent_req_error(req, ret);
return;
}
DEBUG(SSSDBG_TRACE_ALL, "Process user's groups\n");
switch (state->opts->schema_type) {
case SDAP_SCHEMA_RFC2307:
subreq = sdap_initgr_rfc2307_send(state, state->ev, state->opts,
state->sysdb, state->dom, state->sh,
cname);
if (!subreq) {
tevent_req_error(req, ENOMEM);
return;
}
tevent_req_set_callback(subreq, sdap_get_initgr_done, req);
break;
case SDAP_SCHEMA_RFC2307BIS:
case SDAP_SCHEMA_AD:
ret = sysdb_attrs_get_string(state->orig_user,
SYSDB_ORIG_DN,
&orig_dn);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
if (state->opts->dc_functional_level >= DS_BEHAVIOR_WIN2003
&& dp_opt_get_bool(state->opts->basic, SDAP_AD_USE_TOKENGROUPS)) {
/* Take advantage of AD's tokenGroups mechanism to look up all
* parent groups in a single request.
*/
subreq = sdap_ad_tokengroups_initgroups_send(state, state->ev,
state->id_ctx,
state->conn,
state->opts,
state->sysdb,
state->dom,
state->sh,
cname, orig_dn,
state->timeout,
state->use_id_mapping);
} else if (state->opts->support_matching_rule
&& dp_opt_get_bool(state->opts->basic,
SDAP_AD_MATCHING_RULE_INITGROUPS)) {
/* Take advantage of AD's extensibleMatch filter to look up
* all parent groups in a single request.
*/
subreq = sdap_get_ad_match_rule_initgroups_send(state, state->ev,
state->opts,
state->sysdb,
state->dom,
state->sh,
cname, orig_dn,
state->timeout);
} else {
subreq = sdap_initgr_rfc2307bis_send(
state, state->ev, state->opts,
state->sdom, state->sh,
cname, orig_dn);
}
if (!subreq) {
tevent_req_error(req, ENOMEM);
return;
}
talloc_steal(subreq, orig_dn);
tevent_req_set_callback(subreq, sdap_get_initgr_done, req);
break;
case SDAP_SCHEMA_IPA_V1:
subreq = sdap_initgr_nested_send(state, state->ev, state->opts,
state->sysdb, state->dom, state->sh,
state->orig_user, state->grp_attrs);
if (!subreq) {
tevent_req_error(req, ENOMEM);
return;
}
tevent_req_set_callback(subreq, sdap_get_initgr_done, req);
return;
default:
tevent_req_error(req, EINVAL);
return;
}
return;
fail:
if (in_transaction) {
sret = sysdb_transaction_cancel(state->sysdb);
if (sret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed to cancel transaction\n");
}
}
tevent_req_error(req, ret);
}
static void sdap_get_initgr_pgid(struct tevent_req *req);
static void sdap_get_initgr_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct sdap_get_initgr_state *state = tevent_req_data(req,
struct sdap_get_initgr_state);
int ret;
TALLOC_CTX *tmp_ctx;
gid_t primary_gid;
char *gid;
char *sid_str;
char *dom_sid_str;
char *group_sid_str;
struct sdap_options *opts = state->opts;
struct ldb_message *msg;
DEBUG(SSSDBG_TRACE_ALL, "Initgroups done\n");
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) {
tevent_req_error(req, ENOMEM);
return;
}
switch (state->opts->schema_type) {
case SDAP_SCHEMA_RFC2307:
ret = sdap_initgr_rfc2307_recv(subreq);
break;
case SDAP_SCHEMA_RFC2307BIS:
case SDAP_SCHEMA_AD:
if (state->opts->dc_functional_level >= DS_BEHAVIOR_WIN2003
&& dp_opt_get_bool(state->opts->basic, SDAP_AD_USE_TOKENGROUPS)) {
ret = sdap_ad_tokengroups_initgroups_recv(subreq);
}
else if (state->opts->support_matching_rule
&& dp_opt_get_bool(state->opts->basic,
SDAP_AD_MATCHING_RULE_INITGROUPS)) {
ret = sdap_get_ad_match_rule_initgroups_recv(subreq);
} else {
ret = sdap_initgr_rfc2307bis_recv(subreq);
}
break;
case SDAP_SCHEMA_IPA_V1:
ret = sdap_initgr_nested_recv(subreq);
break;
default:
ret = EINVAL;
break;
}
talloc_zfree(subreq);
if (ret) {
DEBUG(SSSDBG_TRACE_ALL, "Error in initgroups: [%d][%s]\n",
ret, strerror(ret));
goto done;
}
/* We also need to update the user's primary group, since
* the user may not be an explicit member of that group
*/
if (state->use_id_mapping) {
DEBUG(SSSDBG_TRACE_LIBS,
"Mapping primary group to unix ID\n");
/* The primary group ID is just the RID part of the objectSID
* of the group. Generate the GID by adding this to the domain
* SID value.
*/
/* Get the user SID so we can extract the domain SID
* from it.
*/
ret = sdap_attrs_get_sid_str(
tmp_ctx, opts->idmap_ctx, state->orig_user,
opts->user_map[SDAP_AT_USER_OBJECTSID].sys_name,
&sid_str);
if (ret != EOK) goto done;
/* Get the domain SID from the user SID */
ret = sdap_idmap_get_dom_sid_from_object(tmp_ctx, sid_str,
&dom_sid_str);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"Could not parse domain SID from [%s]\n", sid_str);
goto done;
}
ret = sysdb_attrs_get_uint32_t(
state->orig_user,
opts->user_map[SDAP_AT_USER_PRIMARY_GROUP].sys_name,
&primary_gid);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"no primary group ID provided\n");
ret = EINVAL;
goto done;
}
/* Add the RID to the end */
group_sid_str = talloc_asprintf(tmp_ctx, "%s-%lu",
dom_sid_str,
(unsigned long)primary_gid);
if (!group_sid_str) {
ret = ENOMEM;
goto done;
}
/* Convert the SID into a UNIX group ID */
ret = sdap_idmap_sid_to_unix(opts->idmap_ctx, group_sid_str,
&primary_gid);
if (ret != EOK) goto done;
} else {
ret = sysdb_attrs_get_uint32_t(state->orig_user, SYSDB_GIDNUM,
&primary_gid);
if (ret != EOK) {
DEBUG(SSSDBG_TRACE_FUNC, "Could not find user's primary GID\n");
goto done;
}
}
ret = sysdb_search_group_by_gid(tmp_ctx, state->dom, primary_gid, NULL,
&msg);
if (ret == EOK) {
DEBUG(SSSDBG_TRACE_FUNC,
"Primary group already cached, nothing to do.\n");
ret = EOK;
goto done;
} else {
gid = talloc_asprintf(state, "%lu", (unsigned long)primary_gid);
if (gid == NULL) {
ret = ENOMEM;
goto done;
}
subreq = groups_get_send(req, state->ev, state->id_ctx,
state->id_ctx->opts->sdom, state->conn,
gid, BE_FILTER_IDNUM, BE_ATTR_ALL, false,
false);
if (!subreq) {
ret = ENOMEM;
goto done;
}
tevent_req_set_callback(subreq, sdap_get_initgr_pgid, req);
}
talloc_free(tmp_ctx);
return;
done:
talloc_free(tmp_ctx);
if (ret == EOK) {
tevent_req_done(req);
} else {
tevent_req_error(req, ret);
}
return;
}
static void sdap_get_initgr_pgid(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
errno_t ret;
ret = groups_get_recv(subreq, NULL, NULL);
talloc_zfree(subreq);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
tevent_req_done(req);
}
int sdap_get_initgr_recv(struct tevent_req *req)
{
TEVENT_REQ_RETURN_ON_ERROR(req);
return EOK;
}
static errno_t get_sysdb_grouplist_ex(TALLOC_CTX *mem_ctx,
struct sysdb_ctx *sysdb,
struct sss_domain_info *domain,
const char *name,
char ***grouplist,
bool get_dn)
{
errno_t ret;
const char *attrs[2];
struct ldb_message *msg;
TALLOC_CTX *tmp_ctx;
struct ldb_message_element *groups;
char **sysdb_grouplist = NULL;
unsigned int i;
attrs[0] = SYSDB_MEMBEROF;
attrs[1] = NULL;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
ret = sysdb_search_user_by_name(tmp_ctx, domain, name,
attrs, &msg);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"Error searching user [%s] by name: [%s]\n",
name, strerror(ret));
goto done;
}
groups = ldb_msg_find_element(msg, SYSDB_MEMBEROF);
if (!groups || groups->num_values == 0) {
/* No groups for this user in sysdb currently */
sysdb_grouplist = NULL;
} else {
sysdb_grouplist = talloc_array(tmp_ctx, char *, groups->num_values+1);
if (!sysdb_grouplist) {
ret = ENOMEM;
goto done;
}
if (get_dn) {
/* Get distinguish name */
for (i=0; i < groups->num_values; i++) {
sysdb_grouplist[i] = talloc_strdup(sysdb_grouplist,
(const char *)groups->values[i].data);
if (sysdb_grouplist[i] == NULL) {
ret = ENOMEM;
goto done;
}
}
} else {
/* Get a list of the groups by groupname only */
for (i=0; i < groups->num_values; i++) {
ret = sysdb_group_dn_name(sysdb,
sysdb_grouplist,
(const char *)groups->values[i].data,
&sysdb_grouplist[i]);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"Could not determine group name from [%s]: [%s]\n",
(const char *)groups->values[i].data, strerror(ret));
goto done;
}
}
}
sysdb_grouplist[groups->num_values] = NULL;
}
*grouplist = talloc_steal(mem_ctx, sysdb_grouplist);
done:
talloc_free(tmp_ctx);
return ret;
}
errno_t get_sysdb_grouplist(TALLOC_CTX *mem_ctx,
struct sysdb_ctx *sysdb,
struct sss_domain_info *domain,
const char *name,
char ***grouplist)
{
return get_sysdb_grouplist_ex(mem_ctx, sysdb, domain,
name, grouplist, false);
}
errno_t get_sysdb_grouplist_dn(TALLOC_CTX *mem_ctx,
struct sysdb_ctx *sysdb,
struct sss_domain_info *domain,
const char *name,
char ***grouplist)
{
return get_sysdb_grouplist_ex(mem_ctx, sysdb, domain,
name, grouplist, true);
}