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/*
Authors:
Pavel Březina <pbrezina@redhat.com>
Copyright (C) 2016 Red Hat
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "sbus/sssd_dbus.h"
#include "responder/nss/nss_iface.h"
#include "responder/nss/nss_private.h"
void nss_update_initgr_memcache(struct nss_ctx *nctx,
const char *fq_name, const char *domain,
int gnum, uint32_t *groups)
{
TALLOC_CTX *tmp_ctx = NULL;
struct sss_domain_info *dom;
struct ldb_result *res;
struct sized_string *delete_name;
bool changed = false;
uint32_t id;
uint32_t gids[gnum];
int ret;
int i, j;
for (dom = nctx->rctx->domains; dom; dom = get_next_domain(dom, 0)) {
if (strcasecmp(dom->name, domain) == 0) {
break;
}
}
if (dom == NULL) {
DEBUG(SSSDBG_OP_FAILURE,
"Unknown domain (%s) requested by provider\n", domain);
return;
}
tmp_ctx = talloc_new(NULL);
if (tmp_ctx == NULL) {
return;
}
ret = sized_output_name(tmp_ctx, nctx->rctx, fq_name, dom, &delete_name);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE,
"sized_output_name failed for '%s': %d [%s]\n",
fq_name, ret, sss_strerror(ret));
goto done;
}
ret = sysdb_initgroups(tmp_ctx, dom, fq_name, &res);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Failed to make request to our cache! [%d][%s]\n",
ret, strerror(ret));
goto done;
}
/* copy, we need the original intact in case we need to invalidate
* all the original groups */
memcpy(gids, groups, gnum * sizeof(uint32_t));
if (ret == ENOENT || res->count == 0) {
/* The user is gone. Invalidate the mc record */
ret = sss_mmap_cache_pw_invalidate(nctx->pwd_mc_ctx, delete_name);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Internal failure in memory cache code: %d [%s]\n",
ret, strerror(ret));
}
/* Also invalidate his groups */
changed = true;
} else {
/* we skip the first entry, it's the user itself */
for (i = 0; i < res->count; i++) {
id = ldb_msg_find_attr_as_uint(res->msgs[i], SYSDB_GIDNUM, 0);
if (id == 0) {
/* probably non-posix group, skip */
continue;
}
for (j = 0; j < gnum; j++) {
if (gids[j] == id) {
gids[j] = 0;
break;
}
}
if (j >= gnum) {
/* we couldn't find a match, this means the groups have
* changed after the refresh */
changed = true;
break;
}
}
if (!changed) {
for (j = 0; j < gnum; j++) {
if (gids[j] != 0) {
/* we found an un-cleared groups, this means the groups
* have changed after the refresh (some got deleted) */
changed = true;
break;
}
}
}
}
if (changed) {
for (i = 0; i < gnum; i++) {
id = groups[i];
ret = sss_mmap_cache_gr_invalidate_gid(nctx->grp_mc_ctx, id);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Internal failure in memory cache code: %d [%s]\n",
ret, strerror(ret));
}
}
to_sized_string(delete_name, fq_name);
ret = sss_mmap_cache_initgr_invalidate(nctx->initgr_mc_ctx,
delete_name);
if (ret != EOK && ret != ENOENT) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Internal failure in memory cache code: %d [%s]\n",
ret, strerror(ret));
}
}
done:
talloc_free(tmp_ctx);
}
int nss_memorycache_invalidate_users(struct sbus_request *req, void *data)
{
struct resp_ctx *rctx = talloc_get_type(data, struct resp_ctx);
struct nss_ctx *nctx = talloc_get_type(rctx->pvt_ctx, struct nss_ctx);
DEBUG(SSSDBG_TRACE_LIBS, "Invalidating all users in memory cache\n");
sss_mmap_cache_reset(nctx->pwd_mc_ctx);
return iface_nss_memorycache_InvalidateAllUsers_finish(req);
}
int nss_memorycache_invalidate_groups(struct sbus_request *req, void *data)
{
struct resp_ctx *rctx = talloc_get_type(data, struct resp_ctx);
struct nss_ctx *nctx = talloc_get_type(rctx->pvt_ctx, struct nss_ctx);
DEBUG(SSSDBG_TRACE_LIBS, "Invalidating all groups in memory cache\n");
sss_mmap_cache_reset(nctx->grp_mc_ctx);
return iface_nss_memorycache_InvalidateAllGroups_finish(req);
}
int nss_memorycache_invalidate_initgroups(struct sbus_request *req, void *data)
{
struct resp_ctx *rctx = talloc_get_type(data, struct resp_ctx);
struct nss_ctx *nctx = talloc_get_type(rctx->pvt_ctx, struct nss_ctx);
DEBUG(SSSDBG_TRACE_LIBS,
"Invalidating all initgroup records in memory cache\n");
sss_mmap_cache_reset(nctx->initgr_mc_ctx);
return iface_nss_memorycache_InvalidateAllInitgroups_finish(req);
}
int nss_memorycache_update_initgroups(struct sbus_request *sbus_req,
void *data,
const char *user,
const char *domain,
uint32_t *groups,
int num_groups)
{
struct resp_ctx *rctx = talloc_get_type(data, struct resp_ctx);
struct nss_ctx *nctx = talloc_get_type(rctx->pvt_ctx, struct nss_ctx);
DEBUG(SSSDBG_TRACE_LIBS, "Updating inigroups memory cache of [%s@%s]\n",
user, domain);
nss_update_initgr_memcache(nctx, user, domain, num_groups, groups);
return iface_nss_memorycache_UpdateInitgroups_finish(sbus_req);
}
struct iface_nss_memorycache iface_nss_memorycache = {
{ &iface_nss_memorycache_meta, 0 },
.UpdateInitgroups = nss_memorycache_update_initgroups,
.InvalidateAllUsers = nss_memorycache_invalidate_users,
.InvalidateAllGroups = nss_memorycache_invalidate_groups,
.InvalidateAllInitgroups = nss_memorycache_invalidate_initgroups,
};
static struct sbus_iface_map iface_map[] = {
{ NSS_MEMORYCACHE_PATH, &iface_nss_memorycache.vtable },
{ NULL, NULL }
};
struct sbus_iface_map *nss_get_sbus_interface()
{
return iface_map;
}
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