/*
SSSD
Async LDAP Helper routines - retrieving groups
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"
/* ==Group-Parsing Routines=============================================== */
static int sdap_find_entry_by_origDN(TALLOC_CTX *memctx,
struct sysdb_ctx *ctx,
struct sss_domain_info *domain,
const char *orig_dn,
char **localdn)
{
TALLOC_CTX *tmpctx;
const char *no_attrs[] = { NULL };
struct ldb_dn *base_dn;
char *filter;
struct ldb_message **msgs;
size_t num_msgs;
int ret;
char *sanitized_dn;
tmpctx = talloc_new(NULL);
if (!tmpctx) {
return ENOMEM;
}
ret = sss_filter_sanitize(tmpctx, orig_dn, &sanitized_dn);
if (ret != EOK) {
ret = ENOMEM;
goto done;
}
filter = talloc_asprintf(tmpctx, "%s=%s", SYSDB_ORIG_DN, sanitized_dn);
if (!filter) {
ret = ENOMEM;
goto done;
}
base_dn = sysdb_domain_dn(ctx, tmpctx, domain->name);
if (!base_dn) {
ret = ENOMEM;
goto done;
}
DEBUG(9, ("Searching cache for [%s].\n", sanitized_dn));
ret = sysdb_search_entry(tmpctx, ctx,
base_dn, LDB_SCOPE_SUBTREE, filter, no_attrs,
&num_msgs, &msgs);
if (ret) {
goto done;
}
if (num_msgs != 1) {
ret = ENOENT;
goto done;
}
*localdn = talloc_strdup(memctx, ldb_dn_get_linearized(msgs[0]->dn));
if (!*localdn) {
ret = ENOENT;
goto done;
}
ret = EOK;
done:
talloc_zfree(tmpctx);
return ret;
}
static int sdap_fill_memberships(struct sysdb_attrs *group_attrs,
struct sysdb_ctx *ctx,
struct sdap_options *opts,
struct sss_domain_info *domain,
struct ldb_val *values,
int num_values)
{
struct ldb_message_element *el;
int i, j;
int ret;
switch (opts->schema_type) {
case SDAP_SCHEMA_RFC2307:
DEBUG(9, ("[RFC2307 Schema]\n"));
ret = sysdb_attrs_users_from_ldb_vals(group_attrs, SYSDB_MEMBER,
domain->name,
values, num_values);
if (ret) {
goto done;
}
break;
case SDAP_SCHEMA_RFC2307BIS:
case SDAP_SCHEMA_IPA_V1:
case SDAP_SCHEMA_AD:
DEBUG(9, ("[IPA or AD Schema]\n"));
ret = sysdb_attrs_get_el(group_attrs, SYSDB_MEMBER, &el);
if (ret) {
goto done;
}
/* Just allocate both big enough to contain all members for now */
el->values = talloc_realloc(el, el->values, struct ldb_val,
el->num_values + num_values);
if (!el->values) {
ret = ENOMEM;
goto done;
}
for (i = 0, j = el->num_values; i < num_values; i++) {
/* sync search entry with this as origDN */
ret = sdap_find_entry_by_origDN(el->values, ctx, domain,
(char *)values[i].data,
(char **)&el->values[j].data);
if (ret != EOK) {
if (ret != ENOENT) {
goto done;
}
DEBUG(7, (" member #%d (%s): not found!\n",
i, (char *)values[i].data));
} else {
DEBUG(7, (" member #%d (%s): [%s]\n",
i, (char *)values[i].data,
(char *)el->values[j].data));
el->values[j].length = strlen((char *)el->values[j].data);
j++;
}
}
el->num_values = j;
break;
default:
DEBUG(0, ("FATAL ERROR: Unhandled schema type! (%d)\n",
opts->schema_type));
ret = EFAULT;
goto done;
}
ret = EOK;
done:
return ret;
}
/* ==Save-Group-Entry===================================================== */
/* FIXME: support non legacy */
/* FIXME: support storing additional attributes */
static errno_t
sdap_store_group_with_gid(struct sysdb_ctx *ctx,
const char *name,
gid_t gid,
struct sysdb_attrs *group_attrs,
uint64_t cache_timeout,
bool posix_group,
time_t now)
{
errno_t ret;
/* make sure that non-posix (empty or explicit gid=0) groups have the
* gidNumber set to zero even if updating existing group */
if (!posix_group) {
ret = sysdb_attrs_add_uint32(group_attrs, SYSDB_GIDNUM, 0);
if (ret) {
DEBUG(2, ("Could not set explicit GID 0 for %s\n", name));
return ret;
}
}
ret = sysdb_store_group(ctx, name, gid, group_attrs, cache_timeout, now);
if (ret) {
DEBUG(2, ("Could not store group %s\n", name));
return ret;
}
return ret;
}
static int sdap_save_group(TALLOC_CTX *memctx,
struct sysdb_ctx *ctx,
struct sdap_options *opts,
struct sss_domain_info *dom,
struct sysdb_attrs *attrs,
bool store_members,
bool populate_members,
char **_usn_value,
time_t now)
{
struct ldb_message_element *el;
struct sysdb_attrs *group_attrs;
const char *name = NULL;
gid_t gid;
int ret;
int i;
char *usn_value = NULL;
TALLOC_CTX *tmpctx = NULL;
bool posix_group;
const char **aliases = NULL;
tmpctx = talloc_new(memctx);
if (!tmpctx) {
ret = ENOMEM;
goto fail;
}
group_attrs = sysdb_new_attrs(tmpctx);
if (group_attrs == NULL) {
ret = ENOMEM;
goto fail;
}
ret = sysdb_attrs_primary_name(ctx, attrs,
opts->group_map[SDAP_AT_GROUP_NAME].name,
&name);
if (ret != EOK) {
DEBUG(1, ("Failed to save the group - entry has no name attribute\n"));
goto fail;
}
ret = sysdb_attrs_get_bool(attrs, SYSDB_POSIX, &posix_group);
if (ret == ENOENT) {
posix_group = true;
} else if (ret != EOK) {
goto fail;
}
DEBUG(8, ("This is%s a posix group\n", (posix_group)?"":" not"));
ret = sysdb_attrs_add_bool(group_attrs, SYSDB_POSIX, posix_group);
if (ret != EOK) {
goto fail;
}
ret = sysdb_attrs_get_uint32_t(attrs,
opts->group_map[SDAP_AT_GROUP_GID].sys_name,
&gid);
if (ret != EOK) {
DEBUG(1, ("no gid provided for [%s] in domain [%s].\n",
name, dom->name));
ret = EINVAL;
goto fail;
}
/* check that the gid is valid for this domain */
if (posix_group) {
if (OUT_OF_ID_RANGE(gid, dom->id_min, dom->id_max)) {
DEBUG(2, ("Group [%s] filtered out! (id out of range)\n",
name));
ret = EINVAL;
goto fail;
}
/* Group ID OK */
}
ret = sysdb_attrs_get_el(attrs, SYSDB_ORIG_DN, &el);
if (ret) {
goto fail;
}
if (el->num_values == 0) {
DEBUG(7, ("Original DN is not available for [%s].\n", name));
} else {
DEBUG(7, ("Adding original DN [%s] to attributes of [%s].\n",
el->values[0].data, name));
ret = sysdb_attrs_add_string(group_attrs, SYSDB_ORIG_DN,
(const char *) el->values[0].data);
if (ret) {
goto fail;
}
}
ret = sysdb_attrs_get_el(attrs,
opts->group_map[SDAP_AT_GROUP_MODSTAMP].sys_name, &el);
if (ret) {
goto fail;
}
if (el->num_values == 0) {
DEBUG(7, ("Original mod-Timestamp is not available for [%s].\n",
name));
} else {
ret = sysdb_attrs_add_string(group_attrs,
opts->group_map[SDAP_AT_GROUP_MODSTAMP].sys_name,
(const char*)el->values[0].data);
if (ret) {
goto fail;
}
}
ret = sysdb_attrs_get_el(attrs,
opts->group_map[SDAP_AT_GROUP_USN].sys_name, &el);
if (ret) {
goto fail;
}
if (el->num_values == 0) {
DEBUG(7, ("Original USN value is not available for [%s].\n",
name));
} else {
ret = sysdb_attrs_add_string(group_attrs,
opts->group_map[SDAP_AT_GROUP_USN].sys_name,
(const char*)el->values[0].data);
if (ret) {
goto fail;
}
usn_value = talloc_strdup(tmpctx, (const char*)el->values[0].data);
if (!usn_value) {
ret = ENOMEM;
goto fail;
}
}
if (populate_members) {
struct ldb_message_element *el1;
ret = sysdb_attrs_get_el(attrs, opts->group_map[SDAP_AT_GROUP_MEMBER].sys_name, &el1);
if (ret != EOK) {
goto fail;
}
ret = sysdb_attrs_get_el(group_attrs, SYSDB_MEMBER, &el);
if (ret != EOK) {
goto fail;
}
el->values = el1->values;
el->num_values = el1->num_values;
} else if (store_members) {
ret = sysdb_attrs_get_el(attrs,
opts->group_map[SDAP_AT_GROUP_MEMBER].sys_name, &el);
if (ret != EOK) {
goto fail;
}
if (el->num_values == 0) {
DEBUG(7, ("No members for group [%s]\n", name));
} else {
DEBUG(7, ("Adding member users to group [%s]\n", name));
ret = sdap_fill_memberships(group_attrs, ctx, opts, dom,
el->values, el->num_values);
if (ret) {
goto fail;
}
}
}
ret = sysdb_attrs_get_aliases(tmpctx, attrs, name, &aliases);
if (ret != EOK) {
DEBUG(1, ("Failed to get the alias list\n"));
goto fail;
}
for (i = 0; aliases[i]; i++) {
ret = sysdb_attrs_add_string(group_attrs, SYSDB_NAME_ALIAS,
aliases[i]);
if (ret) {
goto fail;
}
}
DEBUG(6, ("Storing info for group %s\n", name));
ret = sdap_store_group_with_gid(ctx,
name, gid, group_attrs,
dp_opt_get_int(opts->basic,
SDAP_ENTRY_CACHE_TIMEOUT),
posix_group, now);
if (ret) goto fail;
if (_usn_value) {
*_usn_value = talloc_steal(memctx, usn_value);
}
talloc_steal(memctx, group_attrs);
talloc_free(tmpctx);
return EOK;
fail:
DEBUG(2, ("Failed to save group [%s]\n",
name ? name : "Unknown"));
talloc_free(tmpctx);
return ret;
}
/* ==Save-Group-Memebrs=================================================== */
/* FIXME: support non legacy */
/* FIXME: support storing additional attributes */
static int sdap_save_grpmem(TALLOC_CTX *memctx,
struct sysdb_ctx *ctx,
struct sdap_options *opts,
struct sss_domain_info *dom,
struct sysdb_attrs *attrs,
time_t now)
{
struct ldb_message_element *el;
struct sysdb_attrs *group_attrs = NULL;
const char *name;
int ret;
ret = sysdb_attrs_primary_name(ctx, attrs,
opts->group_map[SDAP_AT_GROUP_NAME].name,
&name);
if (ret != EOK) {
goto fail;
}
ret = sysdb_attrs_get_el(attrs,
opts->group_map[SDAP_AT_GROUP_MEMBER].sys_name, &el);
if (ret != EOK) {
goto fail;
}
if (el->num_values == 0) {
DEBUG(7, ("No members for group [%s]\n", name));
} else {
DEBUG(7, ("Adding member users to group [%s]\n", name));
group_attrs = sysdb_new_attrs(memctx);
if (!group_attrs) {
ret = ENOMEM;
goto fail;
}
ret = sdap_fill_memberships(group_attrs, ctx, opts, dom,
el->values, el->num_values);
if (ret) {
goto fail;
}
}
DEBUG(6, ("Storing members for group %s\n", name));
ret = sysdb_store_group(ctx, name, 0, group_attrs,
dp_opt_get_int(opts->basic,
SDAP_ENTRY_CACHE_TIMEOUT), now);
if (ret) goto fail;
return EOK;
fail:
DEBUG(2, ("Failed to save user %s\n", name));
return ret;
}
/* ==Generic-Function-to-save-multiple-groups============================= */
static int sdap_save_groups(TALLOC_CTX *memctx,
struct sysdb_ctx *sysdb,
struct sss_domain_info *dom,
struct sdap_options *opts,
struct sysdb_attrs **groups,
int num_groups,
bool populate_members,
char **_usn_value)
{
TALLOC_CTX *tmpctx;
char *higher_usn = NULL;
char *usn_value;
bool twopass;
int ret;
int i;
struct sysdb_attrs **saved_groups = NULL;
int nsaved_groups = 0;
time_t now;
switch (opts->schema_type) {
case SDAP_SCHEMA_RFC2307:
twopass = false;
break;
case SDAP_SCHEMA_RFC2307BIS:
case SDAP_SCHEMA_IPA_V1:
case SDAP_SCHEMA_AD:
twopass = true;
break;
default:
return EINVAL;
}
tmpctx = talloc_new(memctx);
if (!tmpctx) {
return ENOMEM;
}
ret = sysdb_transaction_start(sysdb);
if (ret) {
goto done;
}
if (twopass && !populate_members) {
saved_groups = talloc_array(tmpctx, struct sysdb_attrs *,
num_groups);
if (!saved_groups) {
ret = ENOMEM;
goto done;
}
}
now = time(NULL);
for (i = 0; i < num_groups; i++) {
usn_value = NULL;
/* if 2 pass savemembers = false */
ret = sdap_save_group(tmpctx, sysdb,
opts, dom, groups[i],
(!twopass), populate_members, &usn_value, now);
/* Do not fail completely on errors.
* Just report the failure to save and go on */
if (ret) {
DEBUG(2, ("Failed to store group %d. Ignoring.\n", i));
} else {
DEBUG(9, ("Group %d processed!\n", i));
if (twopass && !populate_members) {
saved_groups[nsaved_groups] = groups[i];
nsaved_groups++;
}
}
if (usn_value) {
if (higher_usn) {
if ((strlen(usn_value) > strlen(higher_usn)) ||
(strcmp(usn_value, higher_usn) > 0)) {
talloc_zfree(higher_usn);
higher_usn = usn_value;
} else {
talloc_zfree(usn_value);
}
} else {
higher_usn = usn_value;
}
}
}
if (twopass && !populate_members) {
for (i = 0; i < nsaved_groups; i++) {
ret = sdap_save_grpmem(tmpctx, sysdb, opts, dom, saved_groups[i], now);
/* Do not fail completely on errors.
* Just report the failure to save and go on */
if (ret) {
DEBUG(2, ("Failed to store group %d members.\n", i));
} else {
DEBUG(9, ("Group %d members processed!\n", i));
}
}
}
ret = sysdb_transaction_commit(sysdb);
if (ret) {
DEBUG(1, ("Failed to commit transaction!\n"));
goto done;
}
if (_usn_value) {
*_usn_value = talloc_steal(memctx, higher_usn);
}
done:
talloc_zfree(tmpctx);
return ret;
}
/* ==Process-Groups======================================================= */
struct sdap_process_group_state {
struct tevent_context *ev;
struct sdap_options *opts;
struct sdap_handle *sh;
struct sss_domain_info *dom;
struct sysdb_ctx *sysdb;
struct sysdb_attrs *group;
struct sysdb_attrs **new_members;
struct ldb_message_element* sysdb_dns;
char **queued_members;
int queue_len;
const char **attrs;
const char *filter;
size_t member_idx;
size_t queue_idx;
size_t count;
size_t check_count;
bool enumeration;
};
#define GROUPMEMBER_REQ_PARALLEL 50
static void sdap_process_group_members(struct tevent_req *subreq);
static int sdap_process_group_members_2307bis(struct tevent_req *req,
struct sdap_process_group_state *state,
struct ldb_message_element *memberel);
static int sdap_process_group_members_2307(struct sdap_process_group_state *state,
struct ldb_message_element *memberel);
struct tevent_req *sdap_process_group_send(TALLOC_CTX *memctx,
struct tevent_context *ev,
struct sss_domain_info *dom,
struct sysdb_ctx *sysdb,
struct sdap_options *opts,
struct sdap_handle *sh,
struct sysdb_attrs *group,
bool enumeration)
{
struct ldb_message_element *el;
struct sdap_process_group_state *grp_state;
struct tevent_req *req = NULL;
const char **attrs;
char* filter;
int ret;
req = tevent_req_create(memctx, &grp_state,
struct sdap_process_group_state);
if (!req) return NULL;
ret = build_attrs_from_map(grp_state, opts->user_map, SDAP_OPTS_USER, &attrs);
if (ret) {
goto done;
}
/* FIXME: we ignore nested rfc2307bis groups for now */
filter = talloc_asprintf(grp_state, "(objectclass=%s)",
opts->user_map[SDAP_OC_USER].name);
if (!filter) {
talloc_zfree(req);
return NULL;
}
grp_state->ev = ev;
grp_state->opts = opts;
grp_state->dom = dom;
grp_state->sh = sh;
grp_state->sysdb = sysdb;
grp_state->group = group;
grp_state->check_count = 0;
grp_state->new_members = NULL;
grp_state->member_idx = 0;
grp_state->queue_idx = 0;
grp_state->queued_members = NULL;
grp_state->queue_len = 0;
grp_state->filter = filter;
grp_state->attrs = attrs;
grp_state->enumeration = enumeration;
ret = sysdb_attrs_get_el(group,
opts->group_map[SDAP_AT_GROUP_MEMBER].sys_name,
&el);
if (ret) {
goto done;
}
/* Group without members */
if (el->num_values == 0) {
DEBUG(2, ("No Members. Done!\n"));
ret = EOK;
goto done;
}
grp_state->sysdb_dns = talloc(grp_state, struct ldb_message_element);
if (!grp_state->sysdb_dns) {
talloc_zfree(req);
return NULL;
}
grp_state->sysdb_dns->values = talloc_array(grp_state, struct ldb_val,
el->num_values);
if (!grp_state->sysdb_dns->values) {
talloc_zfree(req);
return NULL;
}
grp_state->sysdb_dns->num_values = 0;
switch (opts->schema_type) {
case SDAP_SCHEMA_RFC2307:
ret = sdap_process_group_members_2307(grp_state, el);
break;
case SDAP_SCHEMA_IPA_V1:
case SDAP_SCHEMA_AD:
case SDAP_SCHEMA_RFC2307BIS:
ret = sdap_process_group_members_2307bis(req, grp_state, el);
break;
default:
DEBUG(1, ("Unknown schema type %d\n", opts->schema_type));
ret = EINVAL;
break;
}
done:
/* We managed to process all the entries */
/* EBUSY means we need to wait for entries in LDAP */
if (ret == EOK) {
DEBUG(7, ("All group members processed\n"));
tevent_req_done(req);
tevent_req_post(req, ev);
}
if (ret != EOK && ret != EBUSY) {
tevent_req_error(req, ret);
tevent_req_post(req, ev);
}
return req;
}
static int
sdap_process_missing_member_2307bis(struct tevent_req *req,
char *user_dn,
int num_users)
{
struct sdap_process_group_state *grp_state =
tevent_req_data(req, struct sdap_process_group_state);
struct tevent_req *subreq;
/*
* Issue at most GROUPMEMBER_REQ_PARALLEL LDAP searches at once.
* The rest is sent while the results are being processed.
* We limit the number as of request here, as the Server might
* enforce limits on the number of pending operations per
* connection.
*/
if (grp_state->check_count > GROUPMEMBER_REQ_PARALLEL) {
DEBUG(7, (" queueing search for: %s\n", user_dn));
if (!grp_state->queued_members) {
DEBUG(7, ("Allocating queue for %d members\n",
num_users - grp_state->check_count));
grp_state->queued_members = talloc_array(grp_state, char *,
num_users - grp_state->check_count + 1);
if (!grp_state->queued_members) {
return ENOMEM;
}
}
grp_state->queued_members[grp_state->queue_len] = user_dn;
grp_state->queue_len++;
} else {
subreq = sdap_get_generic_send(grp_state,
grp_state->ev,
grp_state->opts,
grp_state->sh,
user_dn,
LDAP_SCOPE_BASE,
grp_state->filter,
grp_state->attrs,
grp_state->opts->user_map,
SDAP_OPTS_USER,
dp_opt_get_int(grp_state->opts->basic,
SDAP_SEARCH_TIMEOUT));
if (!subreq) {
return ENOMEM;
}
tevent_req_set_callback(subreq, sdap_process_group_members, req);
}
grp_state->check_count++;
return EOK;
}
static int
sdap_process_group_members_2307bis(struct tevent_req *req,
struct sdap_process_group_state *state,
struct ldb_message_element *memberel)
{
char *member_dn;
char *strdn;
int ret;
int i;
for (i=0; i < memberel->num_values; i++) {
member_dn = (char *)memberel->values[i].data;
ret = sdap_find_entry_by_origDN(state->sysdb_dns->values,
state->sysdb,
state->dom,
member_dn,
&strdn);
if (ret == EOK) {
/*
* User already cached in sysdb. Remember the sysdb DN for later
* use by sdap_save_groups()
*/
DEBUG(7, ("sysdbdn: %s\n", strdn));
state->sysdb_dns->values[state->sysdb_dns->num_values].data =
(uint8_t*) strdn;
state->sysdb_dns->values[state->sysdb_dns->num_values].length =
strlen(strdn);
state->sysdb_dns->num_values++;
} else if (ret == ENOENT) {
if (!state->enumeration) {
/* The user is not in sysdb, need to add it
* We don't need to do this if we're in an enumeration,
* because all real members should all be populated
* already by the first pass of the enumeration.
* Also, we don't want to be holding the sysdb
* transaction while we're performing LDAP lookups.
*/
DEBUG(7, ("Searching LDAP for missing user entry\n"));
ret = sdap_process_missing_member_2307bis(req,
member_dn,
memberel->num_values);
if (ret != EOK) {
DEBUG(1, ("Error processing missing member #%d (%s):\n",
i, member_dn));
return ret;
}
}
} else {
DEBUG(1, ("Error checking cache for member #%d (%s):\n",
i, (char *)memberel->values[i].data));
return ret;
}
}
if (state->queue_len > 0) {
state->queued_members[state->queue_len]=NULL;
}
if (state->check_count == 0) {
/*
* All group members are already cached in sysdb, we are done
* with this group. To avoid redundant sysdb lookups, populate the
* "member" attribute of the group entry with the sysdb DNs of
* the members.
*/
ret = EOK;
memberel->values = talloc_steal(state->group, state->sysdb_dns->values);
memberel->num_values = state->sysdb_dns->num_values;
} else {
state->count = state->check_count;
state->new_members = talloc_zero_array(state,
struct sysdb_attrs *,
state->count + 1);
if (!state->new_members) {
return ENOMEM;
}
ret = EBUSY;
}
return ret;
}
static int
sdap_add_group_member_2307(struct sdap_process_group_state *state,
const char *username)
{
char *strdn;
strdn = sysdb_user_strdn(state->sysdb_dns->values,
state->dom->name, username);
if (!strdn) {
return ENOMEM;
}
state->sysdb_dns->values[state->sysdb_dns->num_values].data =
(uint8_t *) strdn;
state->sysdb_dns->values[state->sysdb_dns->num_values].length =
strlen(strdn);
state->sysdb_dns->num_values++;
return EOK;
}
static int
sdap_process_missing_member_2307(struct sdap_process_group_state *state,
char *member_name, bool *in_transaction,
time_t now)
{
int ret, sret;
TALLOC_CTX *tmp_ctx;
const char *filter;
const char *username;
size_t count;
struct ldb_message **msgs = NULL;
static const char *attrs[] = { SYSDB_NAME, NULL };
if (!in_transaction) return EINVAL;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
/* Check for the alias in the sysdb */
filter = talloc_asprintf(tmp_ctx, "(%s=%s)", SYSDB_NAME_ALIAS, member_name);
if (!filter) {
ret = ENOMEM;
goto fail;
}
ret = sysdb_search_users(tmp_ctx, state->sysdb, filter,
attrs, &count, &msgs);
if (ret == EOK && count > 0) {
/* Entry exists but the group references it with an alias. */
if (count != 1) {
DEBUG(1, ("More than one entry with this alias?\n"));
ret = EIO;
goto fail;
}
/* fill username with primary name */
username = ldb_msg_find_attr_as_string(msgs[0], SYSDB_NAME, NULL);
goto done;
} else if (ret != EOK && ret != ENOENT) {
ret = EIO;
goto fail;
}
username = member_name;
/* The entry really does not exist, add a fake entry */
DEBUG(7, ("Adding a dummy entry\n"));
if (!*in_transaction) {
ret = sysdb_transaction_start(state->sysdb);
if (ret != EOK) {
DEBUG(1, ("Cannot start sysdb transaction: [%d]: %s\n",
ret, strerror(ret)));
return ret;
}
*in_transaction = true;
}
ret = sysdb_add_fake_user(state->sysdb, username, NULL, now);
if (ret != EOK) {
DEBUG(1, ("Cannot store fake user entry: [%d]: %s\n",
ret, strerror(ret)));
goto fail;
}
/*
* Convert the just received DN into the corresponding sysdb DN
* for saving into member attribute of the group
*/
done:
ret = sdap_add_group_member_2307(state, username);
if (ret != EOK) {
DEBUG(1, ("Could not add group member %s\n", username));
goto fail;
}
talloc_free(tmp_ctx);
return EOK;
fail:
talloc_free(tmp_ctx);
if (*in_transaction) {
sret = sysdb_transaction_cancel(state->sysdb);
if (sret == EOK) {
*in_transaction = false;
} else {
DEBUG(0, ("Unable to cancel transaction! [%d][%s]\n",
sret, strerror(sret)));
}
}
return ret;
}
static int
sdap_process_group_members_2307(struct sdap_process_group_state *state,
struct ldb_message_element *memberel)
{
struct ldb_message *msg;
bool in_transaction = false;
char *member_name;
int ret;
errno_t sret;
time_t now;
int i;
now = time(NULL);
for (i=0; i < memberel->num_values; i++) {
member_name = (char *)memberel->values[i].data;
/* We need to skip over zero-length usernames */
if (member_name[0] == '\0') continue;
ret = sysdb_search_user_by_name(state, state->sysdb,
member_name, NULL, &msg);
if (ret == EOK) {
/*
* User already cached in sysdb. Remember the sysdb DN for later
* use by sdap_save_groups()
*/
DEBUG(7, ("Member already cached in sysdb: %s\n", member_name));
ret = sdap_add_group_member_2307(state, member_name);
if (ret != EOK) {
DEBUG(1, ("Could not add member %s into sysdb\n", member_name));
goto done;
}
} else if (ret == ENOENT) {
/* The user is not in sysdb, need to add it */
DEBUG(7, ("member #%d (%s): not found in sysdb\n",
i, member_name));
ret = sdap_process_missing_member_2307(state, member_name,
&in_transaction, now);
if (ret != EOK) {
DEBUG(1, ("Error processing missing member #%d (%s):\n",
i, member_name));
goto done;
}
} else {
DEBUG(1, ("Error checking cache for member #%d (%s):\n",
i, (char *) memberel->values[i].data));
goto done;
}
}
/* sdap_process_missing_member_2307 starts transaction */
if (in_transaction) {
ret = sysdb_transaction_commit(state->sysdb);
if (ret) {
DEBUG(2, ("Cannot commit sysdb transaction\n"));
goto done;
}
in_transaction = false;
}
ret = EOK;
memberel->values = talloc_steal(state->group, state->sysdb_dns->values);
memberel->num_values = state->sysdb_dns->num_values;
done:
if (in_transaction) {
/* If the transaction is still active here, we need to cancel it */
sret = sysdb_transaction_cancel(state->sysdb);
if (sret != EOK) {
DEBUG(0, ("Unable to cancel transaction! [%d][%s]\n",
sret, strerror(sret)));
}
}
return ret;
}
static void sdap_process_group_members(struct tevent_req *subreq)
{
struct sysdb_attrs **usr_attrs;
size_t count;
int ret;
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct sdap_process_group_state *state =
tevent_req_data(req, struct sdap_process_group_state);
struct ldb_message_element *el;
struct ldb_dn *dn;
char* dn_string;
state->check_count--;
DEBUG(9, ("Members remaining: %d\n", state->check_count));
ret = sdap_get_generic_recv(subreq, state, &count, &usr_attrs);
talloc_zfree(subreq);
if (ret) {
goto next;
}
if (count != 1) {
ret = EINVAL;
DEBUG(7, ("Expected one user entry and got %d\n", count));
goto next;
}
ret = sysdb_attrs_get_el(usr_attrs[0],
state->opts->user_map[SDAP_AT_USER_NAME].sys_name, &el);
if (el->num_values == 0) {
ret = EINVAL;
}
if (ret) {
DEBUG(2, ("Failed to get the member's name\n"));
goto next;
}
/*
* Convert the just received DN into the corresponding sysdb DN
* for later usage by sdap_save_groups()
*/
dn = sysdb_user_dn(state->sysdb, state, state->dom->name,
(char*)el[0].values[0].data);
if (!dn) {
tevent_req_error(req, ENOMEM);
return;
}
dn_string = ldb_dn_alloc_linearized(state->group, dn);
if (!dn_string) {
tevent_req_error(req, ENOMEM);
return;
}
state->sysdb_dns->values[state->sysdb_dns->num_values].data =
(uint8_t*)dn_string;
state->sysdb_dns->values[state->sysdb_dns->num_values].length =
strlen(dn_string);
state->sysdb_dns->num_values++;
state->new_members[state->member_idx] = usr_attrs[0];
state->member_idx++;
next:
if (ret) {
DEBUG(7, ("Error reading group member. Skipping\n", ret));
state->count--;
}
/* Are there more searches for uncached users to submit ? */
if (state->queued_members && state->queued_members[state->queue_idx]) {
subreq = sdap_get_generic_send(state,
state->ev, state->opts, state->sh,
state->queued_members[state->queue_idx],
LDAP_SCOPE_BASE,
state->filter,
state->attrs,
state->opts->user_map,
SDAP_OPTS_USER,
dp_opt_get_int(state->opts->basic,
SDAP_SEARCH_TIMEOUT));
if (!subreq) {
tevent_req_error(req, ENOMEM);
return;
}
tevent_req_set_callback(subreq,
sdap_process_group_members, req);
state->queue_idx++;
}
if (state->check_count == 0) {
ret = sdap_save_users(state, state->sysdb, state->attrs,
state->dom, state->opts,
state->new_members, state->count, NULL);
if (ret) {
DEBUG(2, ("Failed to store users.\n"));
tevent_req_error(req, ret);
return;
}
/*
* To avoid redundant sysdb lookups, populate the "member" attribute
* of the group entry with the sysdb DNs of the members.
*/
ret = sysdb_attrs_get_el(state->group,
state->opts->group_map[SDAP_AT_GROUP_MEMBER].sys_name, &el);
el->values = talloc_steal(state->group, state->sysdb_dns->values);
el->num_values = state->sysdb_dns->num_values;
DEBUG(9, ("Processed Group - Done\n"));
tevent_req_done(req);
}
}
static int sdap_process_group_recv(struct tevent_req *req)
{
TEVENT_REQ_RETURN_ON_ERROR(req);
return EOK;
}
/* ==Search-Groups-with-filter============================================ */
struct sdap_get_groups_state {
struct tevent_context *ev;
struct sdap_options *opts;
struct sdap_handle *sh;
struct sss_domain_info *dom;
struct sysdb_ctx *sysdb;
const char **attrs;
const char *base_filter;
char *filter;
int timeout;
bool enumeration;
char *higher_usn;
struct sysdb_attrs **groups;
size_t count;
size_t check_count;
hash_table_t *user_hash;
hash_table_t *group_hash;
size_t base_iter;
struct sdap_search_base **search_bases;
};
static errno_t sdap_get_groups_next_base(struct tevent_req *req);
static void sdap_get_groups_process(struct tevent_req *subreq);
static void sdap_get_groups_done(struct tevent_req *subreq);
struct tevent_req *sdap_get_groups_send(TALLOC_CTX *memctx,
struct tevent_context *ev,
struct sss_domain_info *dom,
struct sysdb_ctx *sysdb,
struct sdap_options *opts,
struct sdap_search_base **search_bases,
struct sdap_handle *sh,
const char **attrs,
const char *filter,
int timeout,
bool enumeration)
{
errno_t ret;
struct tevent_req *req;
struct sdap_get_groups_state *state;
req = tevent_req_create(memctx, &state, struct sdap_get_groups_state);
if (!req) return NULL;
state->ev = ev;
state->opts = opts;
state->dom = dom;
state->sh = sh;
state->sysdb = sysdb;
state->attrs = attrs;
state->higher_usn = NULL;
state->groups = NULL;
state->count = 0;
state->timeout = timeout;
state->enumeration = enumeration;
state->base_filter = filter;
state->base_iter = 0;
state->search_bases = search_bases;
ret = sdap_get_groups_next_base(req);
if (ret != EOK) {
tevent_req_error(req, ret);
tevent_req_post(req, ev);
}
return req;
}
static errno_t sdap_get_groups_next_base(struct tevent_req *req)
{
struct tevent_req *subreq;
struct sdap_get_groups_state *state;
state = tevent_req_data(req, struct sdap_get_groups_state);
talloc_zfree(state->filter);
state->filter = sdap_get_id_specific_filter(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);
if (!subreq) {
return ENOMEM;
}
tevent_req_set_callback(subreq, sdap_get_groups_process, req);
return EOK;
}
static struct tevent_req *sdap_nested_group_process_send(
TALLOC_CTX *mem_ctx, struct tevent_context *ev,
struct sss_domain_info *domain,
struct sysdb_ctx *sysdb, struct sysdb_attrs *group,
hash_table_t *users, hash_table_t *groups,
struct sdap_options *opts, struct sdap_handle *sh,
bool enable_deref, uint32_t nesting);
static void sdap_nested_done(struct tevent_req *req);
static errno_t sdap_nested_group_process_recv(struct tevent_req *req);
static void sdap_get_groups_process(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct sdap_get_groups_state *state =
tevent_req_data(req, struct sdap_get_groups_state);
int ret;
int i;
bool next_base = false;
size_t count;
struct sysdb_attrs **groups;
bool enable_deref = true;
ret = sdap_get_generic_recv(subreq, state,
&count, &groups);
talloc_zfree(subreq);
if (ret) {
tevent_req_error(req, ret);
return;
}
DEBUG(6, ("Search for groups, returned %d results.\n", count));
if (!state->enumeration && count > 1) {
DEBUG(SSSDBG_MINOR_FAILURE,
("Individual group search returned multiple results\n"));
tevent_req_error(req, EINVAL);
return;
}
if (state->enumeration || count == 0) {
next_base = true;
}
/* Add this batch of groups to the list */
if (count > 0) {
state->groups =
talloc_realloc(state,
state->groups,
struct sysdb_attrs *,
state->count + count + 1);
if (!state->groups) {
tevent_req_error(req, ENOMEM);
return;
}
/* Copy the new groups into the list
* They're already allocated on 'state'
*/
for (i = 0; i < count; i++) {
state->groups[state->count + i] = groups[i];
}
state->count += count;
state->groups[state->count] = NULL;
}
if (!state->enumeration && count > 1) {
DEBUG(SSSDBG_MINOR_FAILURE,
("Individual group search returned multiple results\n"));
tevent_req_error(req, EINVAL);
return;
}
if (state->enumeration || count == 0) {
next_base = true;
}
if (next_base) {
state->base_iter++;
if (state->search_bases[state->base_iter]) {
/* There are more search bases to try */
ret = sdap_get_groups_next_base(req);
if (ret != EOK) {
tevent_req_error(req, ret);
}
return;
}
}
/* No more search bases
* Return ENOENT if no groups were found
*/
if (state->count == 0) {
tevent_req_error(req, ENOENT);
return;
}
/* Check whether we need to do nested searches
* for RFC2307bis/FreeIPA/ActiveDirectory
* We don't need to do this for enumeration,
* because all groups will be picked up anyway.
*/
if (!state->enumeration) {
if ((state->opts->schema_type != SDAP_SCHEMA_RFC2307) &&
(dp_opt_get_int(state->opts->basic, SDAP_NESTING_LEVEL) != 0)) {
/* Prepare hashes for nested user processing */
ret = sss_hash_create(state, 32, &state->user_hash);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
ret = sss_hash_create(state, 32, &state->group_hash);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
/*
* If any search base contains filter, disable dereference.
*/
enable_deref = true;
for (i = 0; state->opts->user_search_bases[i] != NULL; i++) {
if (state->opts->user_search_bases[i]->filter != NULL) {
DEBUG(SSSDBG_TRACE_FUNC,
("User search base contains filter, "
"dereference will be disabled\n"));
enable_deref = false;
break;
}
}
if (enable_deref) {
for (i = 0; state->opts->group_search_bases[i] != NULL; i++) {
if (state->opts->group_search_bases[i]->filter != NULL) {
DEBUG(SSSDBG_TRACE_FUNC,
("Group search base contains filter, "
"dereference will be disabled\n"));
enable_deref = false;
break;
}
}
}
subreq = sdap_nested_group_process_send(state,
state->ev,
state->dom,
state->sysdb,
state->groups[0],
state->user_hash,
state->group_hash,
state->opts,
state->sh,
enable_deref,
0);
if (!subreq) {
tevent_req_error(req, EIO);
return;
}
tevent_req_set_callback(subreq, sdap_nested_done, req);
return;
}
}
/* We have all of the groups. Save them to the sysdb */
state->check_count = state->count;
ret = sysdb_transaction_start(state->sysdb);
if (ret != EOK) {
DEBUG(0, ("Failed to start transaction\n"));
tevent_req_error(req, ret);
return;
}
if (state->enumeration
&& state->opts->schema_type != SDAP_SCHEMA_RFC2307
&& dp_opt_get_int(state->opts->basic, SDAP_NESTING_LEVEL) != 0) {
DEBUG(9, ("Saving groups without members first "
"to allow unrolling of nested groups.\n"));
ret = sdap_save_groups(state, state->sysdb, state->dom, state->opts,
state->groups, state->count, false, NULL);
if (ret) {
DEBUG(2, ("Failed to store groups.\n"));
tevent_req_error(req, ret);
return;
}
}
for (i = 0; i < state->count; i++) {
subreq = sdap_process_group_send(state, state->ev, state->dom,
state->sysdb, state->opts,
state->sh, state->groups[i],
state->enumeration);
if (!subreq) {
tevent_req_error(req, ENOMEM);
return;
}
tevent_req_set_callback(subreq, sdap_get_groups_done, req);
}
}
static void sdap_get_groups_done(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct sdap_get_groups_state *state =
tevent_req_data(req, struct sdap_get_groups_state);
int ret;
errno_t sysret;
ret = sdap_process_group_recv(subreq);
talloc_zfree(subreq);
if (ret) {
sysret = sysdb_transaction_cancel(state->sysdb);
if (sysret != EOK) {
DEBUG(0, ("Could not cancel sysdb transaction\n"));
}
tevent_req_error(req, ret);
return;
}
state->check_count--;
DEBUG(9, ("Groups remaining: %d\n", state->check_count));
if (state->check_count == 0) {
DEBUG(9, ("All groups processed\n"));
ret = sdap_save_groups(state, state->sysdb, state->dom, state->opts,
state->groups, state->count, true,
&state->higher_usn);
if (ret) {
DEBUG(2, ("Failed to store groups.\n"));
tevent_req_error(req, ret);
return;
}
DEBUG(9, ("Saving %d Groups - Done\n", state->count));
sysret = sysdb_transaction_commit(state->sysdb);
if (sysret != EOK) {
DEBUG(0, ("Couldn't commit transaction\n"));
tevent_req_error(req, sysret);
} else {
tevent_req_done(req);
}
}
}
int sdap_get_groups_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx, char **usn_value)
{
struct sdap_get_groups_state *state = tevent_req_data(req,
struct sdap_get_groups_state);
TEVENT_REQ_RETURN_ON_ERROR(req);
if (usn_value) {
*usn_value = talloc_steal(mem_ctx, state->higher_usn);
}
return EOK;
}
static errno_t sdap_nested_group_populate_users(struct sysdb_ctx *sysdb,
struct sdap_options *opts,
struct sysdb_attrs **users,
int num_users);
static void sdap_nested_done(struct tevent_req *subreq)
{
errno_t ret, tret;
int hret;
unsigned long i;
unsigned long user_count;
unsigned long group_count;
hash_value_t *values;
bool in_transaction = false;
struct sysdb_attrs **users = NULL;
struct sysdb_attrs **groups = NULL;
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct sdap_get_groups_state *state = tevent_req_data(req,
struct sdap_get_groups_state);
ret = sdap_nested_group_process_recv(subreq);
talloc_zfree(subreq);
if (ret != EOK) {
DEBUG(1, ("Nested group processing failed: [%d][%s]\n",
ret, strerror(ret)));
goto fail;
}
hret = hash_values(state->user_hash, &user_count, &values);
if (hret != HASH_SUCCESS) {
ret = EIO;
goto fail;
}
if (user_count) {
users = talloc_array(state, struct sysdb_attrs *, user_count);
if (!users) {
talloc_free(values);
ret = ENOMEM;
goto fail;
}
for (i = 0; i < user_count; i++) {
users[i] = talloc_get_type(values[i].ptr, struct sysdb_attrs);
}
talloc_zfree(values);
}
/* Users are all saved. Now save groups */
hret = hash_values(state->group_hash, &group_count, &values);
if (hret != HASH_SUCCESS) {
ret = EIO;
goto fail;
}
groups = talloc_array(state, struct sysdb_attrs *, group_count);
if (!groups) {
talloc_free(values);
ret = ENOMEM;
goto fail;
}
for (i = 0; i < group_count; i++) {
groups[i] = talloc_get_type(values[i].ptr, struct sysdb_attrs);
}
talloc_zfree(values);
/* Save all of the users first so that they are in
* place for the groups to add them.
*/
ret = sysdb_transaction_start(state->sysdb);
if (ret != EOK) {
DEBUG(1, ("Failed to start transaction\n"));
goto fail;
}
in_transaction = true;
ret = sdap_nested_group_populate_users(state->sysdb, state->opts,
users, user_count);
if (ret != EOK) {
goto fail;
}
ret = sdap_save_groups(state, state->sysdb, state->dom, state->opts,
groups, group_count, false, &state->higher_usn);
if (ret != EOK) {
goto fail;
}
ret = sysdb_transaction_commit(state->sysdb);
if (ret != EOK) {
DEBUG(1, ("Failed to commit transaction\n"));
goto fail;
}
in_transaction = false;
/* Processing complete */
tevent_req_done(req);
return;
fail:
if (in_transaction) {
tret = sysdb_transaction_cancel(state->sysdb);
if (tret != EOK) {
DEBUG(1, ("Failed to cancel transaction\n"));
}
}
tevent_req_error(req, ret);
}
static errno_t sdap_nested_group_populate_users(struct sysdb_ctx *sysdb,
struct sdap_options *opts,
struct sysdb_attrs **users,
int num_users)
{
int i;
errno_t ret, sret;
struct ldb_message_element *el;
const char *username;
char *clean_orig_dn;
const char *original_dn;
TALLOC_CTX *tmp_ctx;
struct ldb_message **msgs;
char *filter;
const char *sysdb_name;
struct sysdb_attrs *attrs;
static const char *search_attrs[] = { SYSDB_NAME, NULL };
size_t count;
time_t now;
if (num_users == 0) {
/* Nothing to do if there are no users */
return EOK;
}
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
ret = sysdb_transaction_start(sysdb);
if (ret) {
DEBUG(1, ("Failed to start transaction!\n"));
goto done;
}
now = time(NULL);
for (i = 0; i < num_users; i++) {
ret = sysdb_attrs_primary_name(sysdb, users[i],
opts->user_map[SDAP_AT_USER_NAME].name,
&username);
if (ret != EOK) {
DEBUG(1, ("User entry %d has no name attribute\n", i));
goto done;
}
ret = sysdb_attrs_get_el(users[i], SYSDB_ORIG_DN, &el);
if (el->num_values == 0) {
ret = EINVAL;
}
if (ret != EOK) {
DEBUG(1, ("User entry %s has no originalDN attribute\n", i));
goto done;
}
original_dn = (const char *) el->values[0].data;
ret = sss_filter_sanitize(tmp_ctx, original_dn,
&clean_orig_dn);
if (ret != EOK) {
DEBUG(1, ("Cannot sanitize originalDN\n", i));
goto done;
}
/* Check for the specified origDN in the sysdb */
filter = talloc_asprintf(tmp_ctx, "(%s=%s)",
SYSDB_ORIG_DN,
clean_orig_dn);
if (!filter) {
ret = ENOMEM;
goto done;
}
ret = sysdb_search_users(tmp_ctx, sysdb, filter,
search_attrs, &count, &msgs);
talloc_zfree(filter);
talloc_zfree(clean_orig_dn);
if (ret != EOK && ret != ENOENT) {
DEBUG(1, ("Error checking cache for user entry\n"));
goto done;
}
if (ret == EOK) {
/* The entry is cached but expired. Update the username
* if needed. */
if (count != 1) {
DEBUG(1, ("More than one entry with this origDN? Skipping\n"));
continue;
}
sysdb_name = ldb_msg_find_attr_as_string(msgs[0], SYSDB_NAME, NULL);
if (strcmp(sysdb_name, username) == 0) {
/* Username is correct, continue */
continue;
}
attrs = sysdb_new_attrs(tmp_ctx);
if (!attrs) {
ret = ENOMEM;
goto done;
}
ret = sysdb_attrs_add_string(attrs, SYSDB_NAME, username);
if (ret) goto done;
ret = sysdb_set_user_attr(sysdb, sysdb_name, attrs, SYSDB_MOD_REP);
if (ret != EOK) goto done;
}
/* If the entry does not exist add a fake user record */
ret = sysdb_add_fake_user(sysdb, username, original_dn, now);
if (ret != EOK) {
DEBUG(1, ("Cannot store fake user entry, ignoring: [%d]: %s\n",
ret, strerror(ret)));
continue;
} else {
DEBUG(9, ("Added incomplete user %s!\n", username));
}
}
ret = sysdb_transaction_commit(sysdb);
if (ret) {
DEBUG(1, ("Failed to commit transaction!\n"));
goto done;
}
ret = EOK;
done:
talloc_zfree(tmp_ctx);
if (ret != EOK) {
sret = sysdb_transaction_cancel(sysdb);
if (sret != EOK) {
DEBUG(2, ("Could not cancel transaction\n"));
}
}
return ret;
}
struct sdap_deref_ctx {
const char *orig_dn;
size_t expired_users_num;
uint32_t expired_users_index;
char **expired_users;
size_t expired_groups_num;
uint32_t expired_groups_index;
char **expired_groups;
size_t missing_dns_num;
uint32_t missing_dns_index;
char **missing_dns;
struct sdap_deref_attrs **deref_result;
size_t num_results;
uint32_t result_index;
int deref_threshold;
};
struct sdap_nested_group_ctx {
struct tevent_context *ev;
struct sysdb_ctx *sysdb;
struct sss_domain_info *domain;
hash_table_t *users;
hash_table_t *groups;
struct sdap_options *opts;
struct sdap_handle *sh;
uint32_t nesting_level;
struct ldb_message_element *members;
uint32_t member_index;
char *member_dn;
bool enable_deref;
struct sdap_deref_ctx *derefctx;
};
static errno_t sdap_nested_group_process_deref_step(struct tevent_req *req);
static errno_t sdap_nested_group_process_step(struct tevent_req *req);
static struct tevent_req *sdap_nested_group_process_send(
TALLOC_CTX *mem_ctx, struct tevent_context *ev,
struct sss_domain_info *domain,
struct sysdb_ctx *sysdb, struct sysdb_attrs *group,
hash_table_t *users, hash_table_t *groups,
struct sdap_options *opts, struct sdap_handle *sh,
bool enable_deref, uint32_t nesting)
{
errno_t ret;
int hret;
struct tevent_req *req;
struct sdap_nested_group_ctx *state;
const char *groupname;
hash_key_t key;
hash_value_t value;
gid_t gid;
req = tevent_req_create(mem_ctx, &state, struct sdap_nested_group_ctx);
if (!req) {
return NULL;
}
state->ev = ev;
state->sysdb = sysdb;
state->domain = domain;
state->users = users;
state->groups = groups;
state->opts = opts;
state->sh = sh;
state->enable_deref = enable_deref;
state->nesting_level = nesting;
/* If this is too many levels deep, just return success */
if (nesting > dp_opt_get_int(opts->basic, SDAP_NESTING_LEVEL)) {
ret = EOK;
goto immediate;
}
/* Add the current group to the groups hash so we don't
* look it up more than once
*/
key.type = HASH_KEY_STRING;
ret = sysdb_attrs_primary_name(sysdb, group,
opts->group_map[SDAP_AT_GROUP_NAME].sys_name,
&groupname);
if (ret != EOK) {
goto immediate;
}
key.str = talloc_strdup(state, groupname);
if (!key.str) {
ret = ENOMEM;
goto immediate;
}
if (hash_has_key(groups, &key)) {
/* This group has already been processed
* (or is in progress)
* Skip it and just return success
*/
ret = EOK;
goto immediate;
}
ret = sysdb_attrs_get_uint32_t(group,
opts->group_map[SDAP_AT_GROUP_GID].sys_name,
&gid);
if (ret == ENOENT || (ret == EOK && gid == 0)) {
DEBUG(9, ("The group's gid was %s\n", ret == ENOENT ? "missing" : "zero"));
DEBUG(8, ("Marking group as non-posix and setting GID=0!\n"));
if (ret == ENOENT) {
ret = sysdb_attrs_add_uint32(group,
opts->group_map[SDAP_AT_GROUP_GID].sys_name,
0);
if (ret != EOK) {
DEBUG(1, ("Failed to add a GID to non-posix group!\n"));
goto immediate;
}
}
ret = sysdb_attrs_add_bool(group, SYSDB_POSIX, false);
if (ret != EOK) {
DEBUG(2, ("Error: Failed to mark group as non-posix!\n"));
goto immediate;
}
} else if (ret) {
goto immediate;
}
value.type = HASH_VALUE_PTR;
value.ptr = talloc_steal(groups, group);
hret = hash_enter(groups, &key, &value);
if (hret != HASH_SUCCESS) {
ret = EIO;
goto immediate;
}
talloc_free(key.str);
/* Process group memberships */
/* TODO: future enhancement, check for memberuid as well
* See https://fedorahosted.org/sssd/ticket/445
*/
ret = sysdb_attrs_get_el(
group,
opts->group_map[SDAP_AT_GROUP_MEMBER].sys_name,
&state->members);
if (ret != EOK) {
if (ret == ENOENT) {
/* No members to process */
ret = EOK;
}
goto immediate;
}
state->member_index = 0;
if (enable_deref && sdap_has_deref_support(state->sh, state->opts)) {
state->derefctx = talloc_zero(state, struct sdap_deref_ctx);
if (!state->derefctx) {
ret = ENOMEM;
goto immediate;
}
ret = sysdb_attrs_get_string(group, SYSDB_ORIG_DN,
&state->derefctx->orig_dn);
if (ret != EOK) goto immediate;
ret = sdap_nested_group_process_deref_step(req);
if (ret != EAGAIN) goto immediate;
} else {
ret = sdap_nested_group_process_step(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_nested_group_check_hash(struct sdap_nested_group_ctx *);
static errno_t sdap_nested_group_check_cache(TALLOC_CTX *mem_ctx,
struct sysdb_ctx *sysdb,
struct sdap_options *opts,
char *member_dn,
struct ldb_message ***_msgs,
enum sysdb_member_type *_mtype);
static void sdap_nested_group_process_ldap_user(struct tevent_req *subreq);
static void sdap_nested_group_process_user(struct tevent_req *subreq);
static errno_t sdap_nested_group_lookup_user(struct tevent_req *req,
tevent_req_fn fn);
static errno_t sdap_nested_group_lookup_group(struct tevent_req *req);
static errno_t sdap_nested_group_process_deref_call(struct tevent_req *req);
static errno_t sdap_nested_group_process_noderef(struct tevent_req *req);
static errno_t sdap_nested_group_process_deref_step(struct tevent_req *req)
{
errno_t ret;
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
size_t missing = 0;
struct ldb_message **msgs = NULL;
enum sysdb_member_type mtype;
struct sdap_deref_ctx *dctx = state->derefctx;
dctx->deref_threshold = dp_opt_get_int(state->opts->basic,
SDAP_DEREF_THRESHOLD);
dctx->expired_users = talloc_array(dctx, char *,
state->members->num_values + 1);
dctx->expired_groups = talloc_array(dctx, char *,
state->members->num_values + 1);
dctx->missing_dns = talloc_array(dctx, char *,
state->members->num_values + 1);
if (!dctx->expired_users ||
!dctx->expired_groups ||
!dctx->missing_dns) return ENOMEM;
while (true) {
if (state->member_index >= state->members->num_values) {
/* No more entries to check. Return success */
talloc_zfree(state->member_dn);
ret = EOK;
break;
}
/* Continue to loop through until all entries have been
* processed.
*/
ret = sdap_nested_group_check_hash(state);
if (ret == EOK) {
talloc_zfree(state->member_dn);
break; /* All remaining members in hash, check missing */
} else if (ret != ENOENT) {
goto done; /* Unexpected error */
}
ret = sdap_nested_group_check_cache(state, state->sysdb,
state->opts,
state->member_dn,
&msgs, &mtype);
if (ret == EOK) {
/* The entry is cached and valid */
state->member_index++;
talloc_zfree(state->member_dn);
continue;
} else if (ret == EAGAIN) {
/* The entry is cached but needs refresh */
switch(mtype) {
case SYSDB_MEMBER_GROUP:
DEBUG(8, ("Cached LDAP group [%s] needs refresh\n",
state->member_dn));
missing++;
dctx->expired_groups[dctx->expired_groups_num] =
talloc_move(dctx, &state->member_dn);
dctx->expired_groups_num++;
state->member_index++;
continue;
case SYSDB_MEMBER_USER:
DEBUG(8, ("Cached LDAP user [%s] needs refresh\n",
state->member_dn));
missing++;
dctx->expired_users[dctx->expired_users_num] =
talloc_move(dctx, &state->member_dn);
dctx->expired_users_num++;
state->member_index++;
continue;
default:
DEBUG(2, ("Unknown member value\n"));
ret = EINVAL;
goto done;
}
} else if (ret == ENOENT) {
/* The entry is missing. It is unclear whether it
* is a user or a group so we'll need to try looking
* it up */
missing++;
dctx->missing_dns[dctx->missing_dns_num] =
talloc_move(dctx, &state->member_dn);
dctx->missing_dns_num++;
state->member_index++;
continue;
}
/* Unexpected error, skip this entry */
state->member_index++;
continue;
} /* while (true) */
dctx->expired_users[dctx->expired_users_num] = NULL;
dctx->expired_groups[dctx->expired_groups_num] = NULL;
dctx->missing_dns[dctx->missing_dns_num] = NULL;
if (missing == 0) {
ret = EOK;
goto done;
}
if (missing > dctx->deref_threshold) {
DEBUG(6, ("Missing data past threshold, doing a full deref\n"));
ret = sdap_nested_group_process_deref_call(req);
} else {
DEBUG(6, ("Falling back to individual lookups\n"));
ret = sdap_nested_group_process_noderef(req);
}
if (ret != EOK && ret != EAGAIN) goto done;
return EAGAIN;
done:
talloc_zfree(state->member_dn);
return ret;
}
static errno_t sdap_nested_group_process_step(struct tevent_req *req)
{
errno_t ret;
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
struct ldb_message **msgs = NULL;
enum sysdb_member_type mtype;
while (true) {
/* Continue to loop through until all entries have been
* processed.
*/
ret = sdap_nested_group_check_hash(state);
if (ret == EOK) {
talloc_zfree(state->member_dn);
return EOK; /* All members in hash */
} else if (ret != ENOENT) {
goto error; /* Unexpected error */
}
ret = sdap_nested_group_check_cache(state, state->sysdb,
state->opts,
state->member_dn,
&msgs, &mtype);
if (ret == EOK) {
/* The entry is cached and valid */
state->member_index++;
talloc_zfree(state->member_dn);
continue;
} else if (ret == EAGAIN) {
/* The entry is cached but needs refresh */
switch(mtype) {
case SYSDB_MEMBER_GROUP:
DEBUG(6, ("Refreshing cached group from LDAP\n"));
ret = sdap_nested_group_lookup_group(req);
if (ret != EOK) goto error;
break;
case SYSDB_MEMBER_USER:
DEBUG(6, ("Refreshing cached user from LDAP\n"));
ret = sdap_nested_group_lookup_user(
req, sdap_nested_group_process_user);
if (ret != EOK) goto error;
break;
default:
DEBUG(2, ("Unknown member value\n"));
ret = EINVAL;
goto error;
}
return EAGAIN;
} else if (ret == ENOENT) {
/* It wasn't found in the cache either
* We'll have to do a blind lookup in LDAP
*/
/* Try users first */
ret = sdap_nested_group_lookup_user(
req, sdap_nested_group_process_ldap_user);
if (ret != EOK) {
goto error;
}
return EAGAIN;
}
/* Unexpected error, skip this entry */
state->member_index++;
talloc_zfree(state->member_dn);
continue;
} /* while (true) */
error:
talloc_zfree(state->member_dn);
return ret;
}
static errno_t
sdap_nested_group_check_hash(struct sdap_nested_group_ctx *state)
{
hash_key_t key;
bool has_key = false;
uint8_t *data;
do {
if (state->member_index >= state->members->num_values) {
/* No more entries to check. Return success */
return EOK;
}
data = state->members->values[state->member_index].data;
state->member_dn = talloc_strdup(state, (const char *)data);
if (!state->member_dn) {
return ENOMEM;
}
/* Check the user hash
* If it's there, we can save ourselves a trip to the
* sysdb and possibly LDAP as well
*/
key.type = HASH_KEY_STRING;
key.str = state->member_dn;
has_key = hash_has_key(state->users, &key);
if (has_key) {
talloc_zfree(state->member_dn);
state->member_index++;
continue;
}
} while (has_key);
return ENOENT;
}
static errno_t
sdap_nested_group_check_cache(TALLOC_CTX *mem_ctx,
struct sysdb_ctx *sysdb,
struct sdap_options *opts,
char *dn,
struct ldb_message ***_msgs,
enum sysdb_member_type *_mtype)
{
TALLOC_CTX *tmp_ctx;
errno_t ret;
struct ldb_message **msgs = NULL;
char *member_dn;
uint64_t expiration;
uint64_t create_time;
uid_t user_uid;
time_t now = time(NULL);
static const char *attrs[] = { SYSDB_CACHE_EXPIRE, SYSDB_UIDNUM,
SYSDB_CREATE_TIME, SYSDB_NAME,
NULL };
char *filter;
enum sysdb_member_type mtype;
size_t count;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
ret = sss_filter_sanitize(tmp_ctx, dn, &member_dn);
if (ret != EOK) {
goto fail;
}
/* Check for the specified origDN in the sysdb */
filter = talloc_asprintf(tmp_ctx, "(%s=%s)",
SYSDB_ORIG_DN,
member_dn);
if (!filter) {
ret = ENOMEM;
goto fail;
}
/* Try users first */
ret = sysdb_search_users(tmp_ctx, sysdb, filter, attrs, &count, &msgs);
if (ret != EOK && ret != ENOENT) {
ret = EIO;
goto fail;
} else if (ret == EOK && count > 0) {
/* We found a user with this origDN in the sysdb. Check if it is valid
*/
mtype = SYSDB_MEMBER_USER;
/* Check whether the entry is valid */
if (count != 1) {
DEBUG(1, ("More than one entry with this origDN? Skipping\n"));
ret = EIO;
goto fail;
}
user_uid = ldb_msg_find_attr_as_uint64(msgs[0], SYSDB_UIDNUM, 0);
if (!user_uid) {
/* Refresh the fake user if he was created before cache_timeout */
create_time = ldb_msg_find_attr_as_uint64(msgs[0],
SYSDB_CREATE_TIME,
0);
expiration = create_time +
dp_opt_get_int(opts->basic,
SDAP_ENTRY_CACHE_TIMEOUT);
} else {
/* Regular user, check if we need a refresh */
expiration = ldb_msg_find_attr_as_uint64(msgs[0],
SYSDB_CACHE_EXPIRE,
0);
}
if (expiration && expiration > now) {
DEBUG(6, ("Cached values are still valid. Skipping\n"));
ret = EOK;
goto done;
}
/* Refresh the user from LDAP */
ret = EAGAIN;
goto done;
}
/* It wasn't a user. Check whether it's a group */
if (ret == EOK) talloc_zfree(msgs);
ret = sysdb_search_groups(tmp_ctx, sysdb, filter, attrs, &count, &msgs);
if (ret != EOK && ret != ENOENT) {
ret = EIO;
goto fail;
} else if (ret == EOK && count > 0) {
/* We found a group with this origDN in the sysdb */
mtype = SYSDB_MEMBER_GROUP;
/* Check whether the entry is valid */
if (count != 1) {
DEBUG(1, ("More than one entry with this origDN? Skipping\n"));
ret = EIO;
goto fail;
}
expiration = ldb_msg_find_attr_as_uint64(msgs[0],
SYSDB_CACHE_EXPIRE,
0);
if (expiration && expiration > now) {
DEBUG(6, ("Cached values are still valid.\n"));
ret = EOK;
goto done;
}
/* Refresh the group from LDAP */
ret = EAGAIN;
goto done;
}
/* It wasn't found in the groups either */
ret = ENOENT;
done:
if (ret == EOK || ret == EAGAIN) {
*_msgs = talloc_steal(mem_ctx, msgs);
*_mtype = mtype;
}
talloc_zfree(tmp_ctx);
return ret;
fail:
talloc_zfree(tmp_ctx);
return ret;
}
static void sdap_nested_group_process_deref(struct tevent_req *subreq);
static errno_t
sdap_nested_group_process_deref_call(struct tevent_req *req)
{
struct tevent_req *subreq;
struct sdap_attr_map_info *maps;
const char **sdap_attrs;
int ret;
int timeout;
const int num_maps = 2;
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
maps = talloc_array(state, struct sdap_attr_map_info, num_maps+1);
if (!maps) return ENOMEM;
maps[0].map = state->opts->user_map;
maps[0].num_attrs = SDAP_OPTS_USER;
maps[1].map = state->opts->group_map;
maps[1].num_attrs = SDAP_OPTS_GROUP;
maps[2].map = NULL;
/* Pull down the whole group map, but only pull down username
* and originalDN for users. */
ret = build_attrs_from_map(state, state->opts->group_map,
SDAP_OPTS_GROUP, &sdap_attrs);
if (ret != EOK) goto fail;
sdap_attrs = talloc_realloc(NULL, sdap_attrs, const char *,
SDAP_OPTS_GROUP + 2);
if (!sdap_attrs) {
ret = ENOMEM;
goto fail;
}
sdap_attrs[SDAP_OPTS_GROUP] = \
state->opts->user_map[SDAP_AT_USER_NAME].name;
sdap_attrs[SDAP_OPTS_GROUP + 1] = NULL;
timeout = dp_opt_get_int(state->opts->basic, SDAP_ENTRY_CACHE_TIMEOUT);
subreq = sdap_deref_search_send(state, state->ev, state->opts,
state->sh, state->derefctx->orig_dn,
state->opts->group_map[SDAP_AT_GROUP_MEMBER].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_nested_group_process_deref, req);
return EOK;
fail:
talloc_free(sdap_attrs);
talloc_free(maps);
return ret;
}
static errno_t sdap_nested_group_process_noderef(struct tevent_req *req)
{
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
struct sdap_deref_ctx *dctx = state->derefctx;
errno_t ret;
if (dctx->expired_users_index < dctx->expired_users_num) {
state->member_dn = dctx->expired_users[dctx->expired_users_index];
DEBUG(8, ("Refreshing expired user [%s]\n", state->member_dn));
ret = sdap_nested_group_lookup_user(
req, sdap_nested_group_process_user);
if (ret != EOK) goto done;
return EAGAIN;
}
if (dctx->expired_groups_index < dctx->expired_groups_num) {
state->member_dn = dctx->expired_groups[dctx->expired_groups_index];
DEBUG(8, ("Refreshing expired group [%s]\n", state->member_dn));
ret = sdap_nested_group_lookup_group(req);
if (ret != EOK) goto done;
return EAGAIN;
}
if (dctx->missing_dns_index < dctx->missing_dns_num) {
state->member_dn = dctx->missing_dns[dctx->missing_dns_index];
DEBUG(8, ("Looking up missing DN [%s]\n", state->member_dn));
/* Try users first for generic missing DNs */
ret = sdap_nested_group_lookup_user(
req, sdap_nested_group_process_ldap_user);
if (ret != EOK) goto done;
return EAGAIN;
}
ret = EOK;
done:
return ret;
}
static errno_t sdap_nested_group_lookup_user(struct tevent_req *req,
tevent_req_fn fn)
{
const char **sdap_attrs;
char *filter;
char *search_bases_filter = NULL;
struct tevent_req *subreq;
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
errno_t ret;
/*
* If dn is not in user search base and object may be group
* continue with group lookup. If it can't be group, skip it.
*/
if (!sss_ldap_dn_in_search_bases(state, state->member_dn,
state->opts->user_search_bases,
&search_bases_filter)) {
if (fn == sdap_nested_group_process_ldap_user) {
return sdap_nested_group_lookup_group(req);
} else if (fn == sdap_nested_group_process_user) {
if (state->derefctx) {
state->derefctx->expired_users_index++;
ret = sdap_nested_group_process_noderef(req);
} else {
state->member_index++;
talloc_zfree(state->member_dn);
ret = sdap_nested_group_process_step(req);
}
if (ret == EOK) {
/* EOK means it's complete */
tevent_req_done(req);
tevent_req_post(req, state->ev);
} else if (ret != EAGAIN) {
return ret;
}
return EOK;
}
/*
* Something else? Continue.
*/
}
/* Only pull down username and originalDN */
sdap_attrs = talloc_array(state, const char *, 3);
if (!sdap_attrs) return ENOMEM;
sdap_attrs[0] = "objectClass";
sdap_attrs[1] = state->opts->user_map[SDAP_AT_USER_NAME].name;
sdap_attrs[2] = NULL;
if (search_bases_filter != NULL) {
filter = talloc_asprintf(sdap_attrs, "(&%s(objectclass=%s))",
search_bases_filter,
state->opts->user_map[SDAP_OC_USER].name);
} else {
filter = talloc_asprintf(sdap_attrs, "(objectclass=%s)",
state->opts->user_map[SDAP_OC_USER].name);
}
if (!filter) {
talloc_free(sdap_attrs);
return ENOMEM;
}
subreq = sdap_get_generic_send(state, state->ev, state->opts,
state->sh, state->member_dn,
LDAP_SCOPE_BASE,
filter, sdap_attrs,
state->opts->user_map,
SDAP_OPTS_USER,
dp_opt_get_int(state->opts->basic,
SDAP_SEARCH_TIMEOUT));
if (!subreq) {
talloc_free(sdap_attrs);
return EIO;
}
talloc_steal(subreq, sdap_attrs);
tevent_req_set_callback(subreq, fn, req);
return EOK;
}
static void sdap_nested_group_process_group(struct tevent_req *subreq);
static errno_t sdap_nested_group_lookup_group(struct tevent_req *req)
{
errno_t ret;
const char **sdap_attrs;
char *filter;
char *search_bases_filter = NULL;
struct tevent_req *subreq;
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
/*
* If dn is not in group search base, skip it.
*/
if (!sss_ldap_dn_in_search_bases(state, state->member_dn,
state->opts->group_search_bases,
&filter)) {
if (state->derefctx) {
if (state->derefctx->expired_groups_index <
state->derefctx->expired_groups_num) {
state->derefctx->expired_groups_index++;
} else {
state->derefctx->missing_dns_index++;
}
ret = sdap_nested_group_process_noderef(req);
} else {
state->member_index++;
talloc_zfree(state->member_dn);
ret = sdap_nested_group_process_step(req);
}
if (ret == EOK) {
/* EOK means it's complete */
tevent_req_done(req);
tevent_req_post(req, state->ev);
} else if (ret != EAGAIN) {
return ret;
}
return EOK;
}
ret = build_attrs_from_map(state, state->opts->group_map,
SDAP_OPTS_GROUP, &sdap_attrs);
if (ret != EOK) {
return ret;
}
if (search_bases_filter != NULL) {
filter = talloc_asprintf(sdap_attrs, "(&%s(objectclass=%s)(%s=*))",
search_bases_filter,
state->opts->group_map[SDAP_OC_GROUP].name,
state->opts->group_map[SDAP_AT_GROUP_NAME].name);
} else {
filter = talloc_asprintf(sdap_attrs, "(&(objectclass=%s)(%s=*))",
state->opts->group_map[SDAP_OC_GROUP].name,
state->opts->group_map[SDAP_AT_GROUP_NAME].name);
}
if (!filter) {
talloc_free(sdap_attrs);
return ENOMEM;
}
subreq = sdap_get_generic_send(state, state->ev, state->opts,
state->sh, state->member_dn,
LDAP_SCOPE_BASE,
filter, sdap_attrs,
state->opts->group_map,
SDAP_OPTS_GROUP,
dp_opt_get_int(state->opts->basic,
SDAP_SEARCH_TIMEOUT));
if (!subreq) {
talloc_free(sdap_attrs);
return EIO;
}
talloc_steal(subreq, sdap_attrs);
tevent_req_set_callback(subreq, sdap_nested_group_process_group, req);
return EOK;
}
static void sdap_nested_group_process_user(struct tevent_req *subreq)
{
errno_t ret;
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
TALLOC_CTX *tmp_ctx;
size_t count;
struct sysdb_attrs **replies;
int hret;
hash_key_t key;
hash_value_t value;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) {
tevent_req_error(req, ENOMEM);
return;
}
ret = sdap_get_generic_recv(subreq, tmp_ctx, &count, &replies);
talloc_zfree(subreq);
if (ret != EOK && ret != ENOENT) {
tevent_req_error(req, ret);
goto done;
} else if (ret == ENOENT || count == 0) {
/* Nothing to do if the user doesn't exist */
goto skip;
}
if (count != 1) {
/* There should only ever be one reply for a
* BASE search. If otherwise, it's a serious
* error.
*/
DEBUG(1,("Received multiple replies for a BASE search!\n"));
tevent_req_error(req, EIO);
goto done;
}
/* Save the user attributes to the user hash so we can store
* them all at once later.
*/
key.type = HASH_KEY_STRING;
key.str = state->member_dn;
value.type = HASH_VALUE_PTR;
value.ptr = replies[0];
hret = hash_enter(state->users, &key, &value);
if (hret != HASH_SUCCESS) {
tevent_req_error(req, EIO);
goto done;
}
talloc_steal(state->users, replies[0]);
skip:
if (state->derefctx) {
state->derefctx->expired_users_index++;
ret = sdap_nested_group_process_noderef(req);
} else {
state->member_index++;
talloc_zfree(state->member_dn);
ret = sdap_nested_group_process_step(req);
}
if (ret == EOK) {
/* EOK means it's complete */
tevent_req_done(req);
} else if (ret != EAGAIN) {
tevent_req_error(req, ret);
}
/* EAGAIN means that we should re-enter
* the mainloop
*/
done:
talloc_free(tmp_ctx);
}
static void sdap_group_internal_nesting_done(struct tevent_req *subreq);
static void sdap_nested_group_process_group(struct tevent_req *subreq)
{
errno_t ret;
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
TALLOC_CTX *tmp_ctx;
size_t count;
struct sysdb_attrs **replies;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) {
tevent_req_error(req, ENOMEM);
return;
}
ret = sdap_get_generic_recv(subreq, tmp_ctx, &count, &replies);
talloc_zfree(subreq);
if (ret != EOK && ret != ENOENT) {
tevent_req_error(req, ret);
goto done;
} else if (ret == ENOENT || count == 0) {
/* Nothing to do if the group doesn't exist */
goto skip;
}
if (count != 1) {
/* There should only ever be one reply for a
* BASE search. If otherwise, it's a serious
* error.
*/
DEBUG(1,("Received multiple replies for a BASE search!\n"));
tevent_req_error(req, EIO);
goto done;
}
/* Recurse down into the member group */
subreq = sdap_nested_group_process_send(state, state->ev, state->domain,
state->sysdb, replies[0],
state->users, state->groups,
state->opts, state->sh,
state->enable_deref,
state->nesting_level + 1);
if (!subreq) {
tevent_req_error(req, EIO);
goto done;
}
tevent_req_set_callback(subreq, sdap_group_internal_nesting_done, req);
talloc_free(tmp_ctx);
return;
skip:
if (state->derefctx) {
if (state->derefctx->expired_groups_index <
state->derefctx->expired_groups_num) {
state->derefctx->expired_groups_index++;
} else {
state->derefctx->missing_dns_index++;
}
ret = sdap_nested_group_process_noderef(req);
} else {
state->member_index++;
talloc_zfree(state->member_dn);
ret = sdap_nested_group_process_step(req);
}
if (ret == EOK) {
/* EOK means it's complete */
tevent_req_done(req);
} else if (ret != EAGAIN) {
tevent_req_error(req, ret);
}
/* EAGAIN means that we should re-enter
* the mainloop
*/
done:
talloc_free(tmp_ctx);
}
static void sdap_group_internal_nesting_done(struct tevent_req *subreq)
{
errno_t ret;
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
ret = sdap_nested_group_process_recv(subreq);
talloc_zfree(subreq);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
if (state->derefctx) {
if (state->derefctx->expired_groups_index <
state->derefctx->expired_groups_num) {
state->derefctx->expired_groups_index++;
} else {
state->derefctx->missing_dns_index++;
}
state->derefctx->expired_users_index++;
ret = sdap_nested_group_process_noderef(req);
} else {
state->member_index++;
talloc_zfree(state->member_dn);
ret = sdap_nested_group_process_step(req);
}
if (ret == EOK) {
/* EOK means it's complete */
tevent_req_done(req);
} else if (ret != EAGAIN) {
tevent_req_error(req, ret);
}
/* EAGAIN means that we should re-enter
* the mainloop
*/
}
static void sdap_nested_group_process_ldap_user(struct tevent_req *subreq)
{
errno_t ret;
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
TALLOC_CTX *tmp_ctx;
size_t count;
struct sysdb_attrs **replies;
int hret;
hash_key_t key;
hash_value_t value;
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) {
tevent_req_error(req, ENOMEM);
return;
}
ret = sdap_get_generic_recv(subreq, tmp_ctx, &count, &replies);
talloc_zfree(subreq);
if (ret != EOK && ret != ENOENT) {
tevent_req_error(req, ret);
goto done;
} else if (ret == ENOENT || count == 0) {
/* No user found. Assume it's a group */
ret = sdap_nested_group_lookup_group(req);
if (ret != EOK) {
tevent_req_error(req, ret);
}
goto done;
}
if (count != 1) {
/* There should only ever be one reply for a
* BASE search. If otherwise, it's a serious
* error.
*/
DEBUG(1,("Received multiple replies for a BASE search!\n"));
tevent_req_error(req, EIO);
goto done;
}
/* Save the user attributes to the user hash so we can store
* them all at once later.
*/
key.type = HASH_KEY_STRING;
key.str = state->member_dn;
value.type = HASH_VALUE_PTR;
value.ptr = replies[0];
hret = hash_enter(state->users, &key, &value);
if (hret != HASH_SUCCESS) {
tevent_req_error(req, EIO);
goto done;
}
talloc_steal(state->users, replies[0]);
/* Move on to the next member */
if (state->derefctx) {
state->derefctx->missing_dns_index++;
ret = sdap_nested_group_process_noderef(req);
} else {
state->member_index++;
talloc_zfree(state->member_dn);
ret = sdap_nested_group_process_step(req);
}
if (ret == EOK) {
/* EOK means it's complete */
tevent_req_done(req);
} else if (ret != EAGAIN) {
tevent_req_error(req, ret);
}
/* EAGAIN means that we should re-enter
* the mainloop
*/
done:
talloc_free(tmp_ctx);
}
static errno_t
sdap_nested_group_process_deref_result(struct tevent_req *req);
static void sdap_nested_group_process_deref(struct tevent_req *subreq)
{
errno_t ret;
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
ret = sdap_deref_search_recv(subreq, state->derefctx,
&state->derefctx->num_results,
&state->derefctx->deref_result);
talloc_zfree(subreq);
if (ret != EOK && ret != ENOENT) {
tevent_req_error(req, ret);
return;
} else if (ret == ENOENT || state->derefctx->deref_result == NULL) {
/* Nothing could be dereferenced. Done. */
tevent_req_done(req);
return;
}
state->derefctx->result_index = 0;
DEBUG(8, ("Received %d dereference results, about to process them\n",
state->derefctx->num_results));
ret = sdap_nested_group_process_deref_result(req);
if (ret == EOK) {
tevent_req_done(req);
} else if (ret != EAGAIN) {
tevent_req_error(req, ret);
}
/* EAGAIN means a recursive search is in progress */
}
static void
sdap_nested_group_process_deref_recurse_done(struct tevent_req *subreq);
static errno_t
sdap_nested_group_process_deref_result(struct tevent_req *req)
{
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
struct tevent_req *subreq;
hash_key_t key;
hash_value_t value;
int hret;
const char *orig_dn;
errno_t ret;
struct sdap_deref_ctx *dctx = state->derefctx;
const char *tmp_name;
while (dctx->result_index < dctx->num_results) {
if (dctx->deref_result[dctx->result_index]->map == \
state->opts->user_map) {
/* Add to appropriate hash table */
ret = sysdb_attrs_get_string(
dctx->deref_result[dctx->result_index]->attrs,
SYSDB_ORIG_DN, &orig_dn);
if (ret != EOK) {
DEBUG(2, ("The entry has no originalDN\n"));
return ret;
}
/* check if the user is in search base */
if (!sss_ldap_dn_in_search_bases(state, orig_dn,
state->opts->user_search_bases,
NULL)) {
dctx->result_index++;
continue;
}
DEBUG(9, ("Found member user [%s]\n", orig_dn));
key.type = HASH_KEY_STRING;
key.str = talloc_strdup(state, orig_dn);
value.type = HASH_VALUE_PTR;
value.ptr = dctx->deref_result[dctx->result_index]->attrs;
hret = hash_enter(state->users, &key, &value);
if (hret != HASH_SUCCESS) return EIO;
talloc_steal(state->users,
dctx->deref_result[dctx->result_index]->attrs);
dctx->result_index++;
} else if (dctx->deref_result[dctx->result_index]->map == \
state->opts->group_map) {
ret = sysdb_attrs_get_string(dctx->deref_result[dctx->result_index]->attrs,
state->opts->group_map[SDAP_AT_GROUP_NAME].name,
&tmp_name);
if (ret == ENOENT) {
DEBUG(7, ("Dereferenced a group without name, skipping ...\n"));
} else if (ret) {
return EIO;
}
ret = sysdb_attrs_get_string(
dctx->deref_result[dctx->result_index]->attrs,
SYSDB_ORIG_DN, &orig_dn);
if (ret != EOK) {
DEBUG(2, ("The entry has no originalDN\n"));
return ret;
}
/* check if the group is in search base */
if (!sss_ldap_dn_in_search_bases(state, orig_dn,
state->opts->group_search_bases,
NULL)) {
dctx->result_index++;
continue;
}
DEBUG(6, ("Recursing down a nested group\n"));
subreq = sdap_nested_group_process_send(state, state->ev,
state->domain, state->sysdb,
dctx->deref_result[dctx->result_index]->attrs,
state->users, state->groups,
state->opts, state->sh,
state->enable_deref,
state->nesting_level + 1);
if (!subreq) return EIO;
tevent_req_set_callback(subreq,
sdap_nested_group_process_deref_recurse_done,
req);
return EAGAIN;
} else {
/* This should never happen, but if it does,
* do not loop forever */
DEBUG(2, ("Entry does not match any known map, skipping\n"));
dctx->result_index++;
continue;
}
}
/* All deref results processed */
DEBUG(8, ("All dereference results processed\n"));
return EOK;
}
static void
sdap_nested_group_process_deref_recurse_done(struct tevent_req *subreq)
{
errno_t ret;
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct sdap_nested_group_ctx *state =
tevent_req_data(req, struct sdap_nested_group_ctx);
ret = sdap_nested_group_process_recv(subreq);
talloc_zfree(subreq);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
state->derefctx->result_index++;
ret = sdap_nested_group_process_deref_result(req);
if (ret == EOK) {
tevent_req_done(req);
} else if (ret != EAGAIN) {
tevent_req_error(req, ret);
}
/* EAGAIN means a recursive search is in progress */
}
static errno_t sdap_nested_group_process_recv(struct tevent_req *req)
{
TEVENT_REQ_RETURN_ON_ERROR(req);
return EOK;
}