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From 0dc81a52e2836010974e9f71b1f3e47c20fd498d Mon Sep 17 00:00:00 2001
From: Sumit Bose <sbose@redhat.com>
Date: Fri, 9 Oct 2020 11:56:21 +0200
Subject: [PATCH 7/8] negcache: make sure short names are added to sub-domains
If short names are used with filter_users or filter_groups in a
[domain/...] section they should be added to the sub-domains of this
domain as well.
Resolves: https://github.com/SSSD/sssd/issues/5238
Reviewed-by: Alexey Tikhonov <atikhono@redhat.com>
---
src/responder/common/negcache.c | 105 +++++++------
src/tests/cmocka/test_negcache.c | 254 +++++++++++++++++++++++++++++++
2 files changed, 312 insertions(+), 47 deletions(-)
diff --git a/src/responder/common/negcache.c b/src/responder/common/negcache.c
index 139218420..9ee39ce3e 100644
--- a/src/responder/common/negcache.c
+++ b/src/responder/common/negcache.c
@@ -971,6 +971,7 @@ errno_t sss_ncache_prepopulate(struct sss_nc_ctx *ncache,
char *name = NULL;
struct sss_domain_info *dom = NULL;
struct sss_domain_info *domain_list = rctx->domains;
+ struct sss_domain_info *ddom;
char *domainname = NULL;
char *conf_path = NULL;
TALLOC_CTX *tmpctx = talloc_new(NULL);
@@ -1013,39 +1014,44 @@ errno_t sss_ncache_prepopulate(struct sss_nc_ctx *ncache,
continue;
}
- if (domainname && strcmp(domainname, dom->name)) {
- DEBUG(SSSDBG_TRACE_FUNC,
- "Mismatch between domain name (%s) and name "
- "set in FQN (%s), assuming %s is UPN\n",
- dom->name, domainname, filter_list[i]);
- ret = sss_ncache_set_upn(ncache, true, dom, filter_list[i]);
+ /* Check domain and its sub-domains */
+ for (ddom = dom; ddom != NULL;
+ ddom = get_next_domain(ddom, SSS_GND_ALL_SUBDOMAINS)) {
+
+ if (domainname && strcmp(domainname, ddom->name)) {
+ DEBUG(SSSDBG_TRACE_FUNC,
+ "Mismatch between domain name (%s) and name "
+ "set in FQN (%s), assuming %s is UPN\n",
+ ddom->name, domainname, filter_list[i]);
+ ret = sss_ncache_set_upn(ncache, true, ddom, filter_list[i]);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_OP_FAILURE,
+ "sss_ncache_set_upn failed (%d [%s]), ignored\n",
+ ret, sss_strerror(ret));
+ }
+ continue;
+ }
+
+ fqname = sss_create_internal_fqname(tmpctx, name, ddom->name);
+ if (fqname == NULL) {
+ continue;
+ }
+
+ ret = sss_ncache_set_upn(ncache, true, ddom, fqname);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE,
"sss_ncache_set_upn failed (%d [%s]), ignored\n",
ret, sss_strerror(ret));
}
- continue;
- }
-
- fqname = sss_create_internal_fqname(tmpctx, name, dom->name);
- if (fqname == NULL) {
- continue;
- }
-
- ret = sss_ncache_set_upn(ncache, true, dom, fqname);
- if (ret != EOK) {
- DEBUG(SSSDBG_OP_FAILURE,
- "sss_ncache_set_upn failed (%d [%s]), ignored\n",
- ret, sss_strerror(ret));
- }
- ret = sss_ncache_set_user(ncache, true, dom, fqname);
- talloc_zfree(fqname);
- if (ret != EOK) {
- DEBUG(SSSDBG_CRIT_FAILURE,
- "Failed to store permanent user filter for [%s]"
- " (%d [%s])\n", filter_list[i],
- ret, sss_strerror(ret));
- continue;
+ ret = sss_ncache_set_user(ncache, true, ddom, fqname);
+ talloc_zfree(fqname);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ "Failed to store permanent user filter for [%s]"
+ " (%d [%s])\n", filter_list[i],
+ ret, sss_strerror(ret));
+ continue;
+ }
}
}
}
@@ -1161,27 +1167,32 @@ errno_t sss_ncache_prepopulate(struct sss_nc_ctx *ncache,
continue;
}
- if (domainname && strcmp(domainname, dom->name)) {
- DEBUG(SSSDBG_CRIT_FAILURE,
- "Mismatch between domain name (%s) and name "
- "set in FQN (%s), skipping group %s\n",
- dom->name, domainname, name);
- continue;
- }
+ /* Check domain and its sub-domains */
+ for (ddom = dom;
+ ddom != NULL && (ddom == dom || ddom->parent != NULL);
+ ddom = get_next_domain(ddom, SSS_GND_ALL_DOMAINS)) {
+ if (domainname && strcmp(domainname, ddom->name)) {
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ "Mismatch between domain name (%s) and name "
+ "set in FQN (%s), skipping group %s\n",
+ ddom->name, domainname, name);
+ continue;
+ }
- fqname = sss_create_internal_fqname(tmpctx, name, dom->name);
- if (fqname == NULL) {
- continue;
- }
+ fqname = sss_create_internal_fqname(tmpctx, name, ddom->name);
+ if (fqname == NULL) {
+ continue;
+ }
- ret = sss_ncache_set_group(ncache, true, dom, fqname);
- talloc_zfree(fqname);
- if (ret != EOK) {
- DEBUG(SSSDBG_CRIT_FAILURE,
- "Failed to store permanent group filter for [%s]"
- " (%d [%s])\n", filter_list[i],
- ret, strerror(ret));
- continue;
+ ret = sss_ncache_set_group(ncache, true, ddom, fqname);
+ talloc_zfree(fqname);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ "Failed to store permanent group filter for [%s]"
+ " (%d [%s])\n", filter_list[i],
+ ret, strerror(ret));
+ continue;
+ }
}
}
}
diff --git a/src/tests/cmocka/test_negcache.c b/src/tests/cmocka/test_negcache.c
index b3a379227..fb306b110 100644
--- a/src/tests/cmocka/test_negcache.c
+++ b/src/tests/cmocka/test_negcache.c
@@ -119,6 +119,8 @@ static int setup(void **state)
int ret;
struct test_state *ts;
+ test_dom_suite_setup(TESTS_PATH);
+
ts = talloc(NULL, struct test_state);
assert_non_null(ts);
@@ -133,6 +135,7 @@ static int setup(void **state)
static int teardown(void **state)
{
struct test_state *ts = talloc_get_type_abort(*state, struct test_state);
+ test_dom_suite_cleanup(TESTS_PATH, TEST_CONF_DB, TEST_DOM_NAME);
talloc_free(ts);
return 0;
}
@@ -921,6 +924,255 @@ static void test_sss_ncache_reset_prepopulate(void **state)
assert_int_equal(ret, EEXIST);
}
+/* The main purpose of test_sss_ncache_short_name_in_domain is to test that
+ * short names in the filter_users or filter_groups options in a [domain/...]
+ * section are properly added to the related sub-domains as well (if there are
+ * any) and not added to domains from other [domain/...] sections. For
+ * completeness entries with fully-qualified names of the parent and the
+ * sub-domain and the generic UPN are added as well.
+ *
+ * The result should of course be independent of the present domains. To
+ * verify this the domains are added one after the other and the negative
+ * cache is repopulated each time.
+ *
+ * With the given domains, users and group we have to following expectations:
+ * - the short name entry will be added to the domain and all sub-domains as
+ * name and as upn by expanding it to a fully-qualified name with the
+ * domain name or sub-domain name respectively
+ * - the fully-qualified name from the parent domain is added as name and upn
+ * to the parent domain and as upn to all sub-domains
+ * - the fully-qualified name from the sub-domain is added as name to the
+ * sub-domain and as upn to the parent and all sub-domains
+ * - the generic upn is nowhere added as name and as upn to the parent and all
+ * sub-domains
+ * - none of the names is added to a different parent domain
+ *
+ * The following table should illustrated the expectations:
+ *
+ * user (name):
+ * | shortuser | parentu@TEST_DOM_NAME | subdomu@subTEST_DOM_NAME | upn@upn.dom
+ *-----------------+-----------+-----------------------+--------------------------+------------
+ * TEST_DOM_NAME | PRESENT | PRESENT | MISSING | MISSING
+ * subTEST_DOM_NAME| PRESENT | MISSING | PRESENT | MISSING
+ * TEST_DOM_NAME2 | MISSING | MISSING | MISSING | MISSING
+ *
+ * user (upn):
+ * | shortuser | parentu@TEST_DOM_NAME | subdomu@subTEST_DOM_NAME | upn@upn.dom
+ *-----------------+-----------+-----------------------+--------------------------+------------
+ * TEST_DOM_NAME | PRESENT | PRESENT | PRESENT | PRESENT
+ * subTEST_DOM_NAME| PRESENT | PRESENT | PRESENT | PRESENT
+ * TEST_DOM_NAME2 | MISSING | MISSING | MISSING | MISSING
+ *
+ *
+ *
+ * groups:
+ * | shortgroup | parentg@TEST_DOM_NAME | subdomg@subTEST_DOM_NAME
+ *-----------------+------------+-----------------------+-------------------------
+ * TEST_DOM_NAME | PRESENT | PRESENT | MISSING
+ * subTEST_DOM_NAME| PRESENT | MISSING | PRESENT
+ * TEST_DOM_NAME2 | MISSING | MISSING | MISSING
+ *
+ *
+ * The following expect_*() implement checks for the expextations:
+ */
+
+static void expect_in_parent(struct sss_nc_ctx *ncache,
+ struct sss_domain_info *dom)
+{
+ int ret;
+
+ ret = check_user_in_ncache(ncache, dom, "shortuser");
+ assert_int_equal(ret, EEXIST);
+ ret = sss_ncache_check_upn(ncache, dom, "shortuser@"TEST_DOM_NAME);
+ assert_int_equal(ret, EEXIST);
+
+ ret = check_user_in_ncache(ncache, dom, "parentu");
+ assert_int_equal(ret, EEXIST);
+ ret = sss_ncache_check_upn(ncache, dom, "parentu@"TEST_DOM_NAME);
+ assert_int_equal(ret, EEXIST);
+
+ ret = check_user_in_ncache(ncache, dom, "subdomu");
+ assert_int_equal(ret, ENOENT);
+ ret = sss_ncache_check_upn(ncache, dom, "subdomu@sub"TEST_DOM_NAME);
+ assert_int_equal(ret, EEXIST);
+
+ ret = check_user_in_ncache(ncache, dom, "upn");
+ assert_int_equal(ret, ENOENT);
+ ret = sss_ncache_check_upn(ncache, dom, "upn@upn.dom");
+ assert_int_equal(ret, EEXIST);
+
+ ret = check_group_in_ncache(ncache, dom, "shortgroup");
+ assert_int_equal(ret, EEXIST);
+
+ ret = check_group_in_ncache(ncache, dom, "parentg");
+ assert_int_equal(ret, EEXIST);
+
+ ret = check_group_in_ncache(ncache, dom, "subdomg");
+ assert_int_equal(ret, ENOENT);
+}
+
+static void expect_in_subdomain(struct sss_nc_ctx *ncache,
+ struct sss_domain_info *sub_dom)
+{
+ int ret;
+
+ ret = check_user_in_ncache(ncache, sub_dom, "shortuser");
+ assert_int_equal(ret, EEXIST);
+ ret = sss_ncache_check_upn(ncache, sub_dom, "shortuser@sub"TEST_DOM_NAME);
+ assert_int_equal(ret, EEXIST);
+
+ ret = check_user_in_ncache(ncache, sub_dom, "subdomu");
+ assert_int_equal(ret, EEXIST);
+ ret = sss_ncache_check_upn(ncache, sub_dom, "subdomu@sub"TEST_DOM_NAME);
+ assert_int_equal(ret, EEXIST);
+
+ ret = check_user_in_ncache(ncache, sub_dom, "upn");
+ assert_int_equal(ret, ENOENT);
+ ret = sss_ncache_check_upn(ncache, sub_dom, "upn@upn.dom");
+ assert_int_equal(ret, EEXIST);
+
+ ret = check_user_in_ncache(ncache, sub_dom, "parentu");
+ assert_int_equal(ret, ENOENT);
+ ret = sss_ncache_check_upn(ncache, sub_dom, "parentu@"TEST_DOM_NAME);
+ assert_int_equal(ret, EEXIST);
+
+
+ ret = check_group_in_ncache(ncache, sub_dom, "shortgroup");
+ assert_int_equal(ret, EEXIST);
+
+ ret = check_group_in_ncache(ncache, sub_dom, "parentg");
+ assert_int_equal(ret, ENOENT);
+
+ ret = check_group_in_ncache(ncache, sub_dom, "subdomg");
+ assert_int_equal(ret, EEXIST);
+}
+static void expect_no_entries_in_dom(struct sss_nc_ctx *ncache,
+ struct sss_domain_info *dom2)
+{
+ int ret;
+
+ ret = check_user_in_ncache(ncache, dom2, "shortuser");
+ assert_int_equal(ret, ENOENT);
+ ret = sss_ncache_check_upn(ncache, dom2, "shortuser"TEST_DOM_NAME);
+ assert_int_equal(ret, ENOENT);
+
+ ret = check_user_in_ncache(ncache, dom2, "parentu");
+ assert_int_equal(ret, ENOENT);
+ ret = sss_ncache_check_upn(ncache, dom2, "parentu@"TEST_DOM_NAME);
+ assert_int_equal(ret, ENOENT);
+
+ ret = check_user_in_ncache(ncache, dom2, "subdomu");
+ assert_int_equal(ret, ENOENT);
+ ret = sss_ncache_check_upn(ncache, dom2, "subdomu@sub"TEST_DOM_NAME);
+ assert_int_equal(ret, ENOENT);
+
+ ret = check_user_in_ncache(ncache, dom2, "upn");
+ assert_int_equal(ret, ENOENT);
+ ret = sss_ncache_check_upn(ncache, dom2, "upn@upn.dom");
+ assert_int_equal(ret, ENOENT);
+
+ ret = check_group_in_ncache(ncache, dom2, "shortgroup");
+ assert_int_equal(ret, ENOENT);
+
+ ret = check_group_in_ncache(ncache, dom2, "parentg");
+ assert_int_equal(ret, ENOENT);
+
+ ret = check_group_in_ncache(ncache, dom2, "subdomg");
+ assert_int_equal(ret, ENOENT);
+}
+
+static void test_sss_ncache_short_name_in_domain(void **state)
+{
+ int ret;
+ struct test_state *ts;
+ struct tevent_context *ev;
+ struct sss_nc_ctx *ncache;
+ struct sss_test_ctx *tc;
+ struct sss_domain_info *dom;
+ struct sss_domain_info *dom2;
+ struct sss_domain_info *sub_dom;
+
+ struct sss_test_conf_param params[] = {
+ { "filter_users", "shortuser, parentu@"TEST_DOM_NAME", "
+ "subdomu@sub"TEST_DOM_NAME", upn@upn.dom" },
+ { "filter_groups", "shortgroup, parentg@"TEST_DOM_NAME", "
+ "subdomg@sub"TEST_DOM_NAME },
+ { NULL, NULL },
+ };
+
+ const char *nss_filter_users[] = { params[0].value, NULL};
+ const char *nss_filter_groups[] = { params[1].value, NULL};
+
+ ts = talloc_get_type_abort(*state, struct test_state);
+
+ ev = tevent_context_init(ts);
+ assert_non_null(ev);
+
+ dom = talloc_zero(ts, struct sss_domain_info);
+ assert_non_null(dom);
+ dom->name = discard_const_p(char, TEST_DOM_NAME);
+ sss_domain_set_state(dom, DOM_ACTIVE);
+
+ ts->nctx = mock_nctx(ts);
+ assert_non_null(ts->nctx);
+
+ tc = create_dom_test_ctx(ts, TESTS_PATH, TEST_CONF_DB,
+ TEST_DOM_NAME, TEST_ID_PROVIDER, params);
+ assert_non_null(tc);
+
+ ret = confdb_add_param(tc->confdb, true, "config/domain/"TEST_DOM_NAME,
+ "filter_users", nss_filter_users);
+ assert_int_equal(ret, EOK);
+
+ ret = confdb_add_param(tc->confdb, true, "config/domain"TEST_DOM_NAME,
+ "filter_groups", nss_filter_groups);
+ assert_int_equal(ret, EOK);
+
+ ncache = ts->ctx;
+ ts->rctx = mock_rctx(ts, ev, dom, ts->nctx);
+ assert_non_null(ts->rctx);
+ ts->rctx->cdb = tc->confdb;
+
+ ret = sss_names_init(ts, tc->confdb, TEST_DOM_NAME, &dom->names);
+ assert_int_equal(ret, EOK);
+
+ ret = sss_ncache_reset_repopulate_permanent(ts->rctx, ncache);
+ assert_int_equal(ret, EOK);
+
+ /* Add another domain */
+ dom2 = talloc_zero(ts, struct sss_domain_info);
+ assert_non_null(dom2);
+ dom2->name = discard_const_p(char, TEST_DOM_NAME"2");
+ sss_domain_set_state(dom2, DOM_ACTIVE);
+ dom->next = dom2;
+ dom2->names = dom->names;
+
+ expect_in_parent(ncache, dom);
+ expect_no_entries_in_dom(ncache, dom2);
+
+ ret = sss_ncache_reset_repopulate_permanent(ts->rctx, ncache);
+ assert_int_equal(ret, EOK);
+
+ expect_in_parent(ncache, dom);
+ expect_no_entries_in_dom(ncache, dom2);
+
+ /* Add a sub domain */
+ sub_dom = talloc_zero(ts, struct sss_domain_info);
+ assert_non_null(sub_dom);
+ sub_dom->name = discard_const_p(char, "sub"TEST_DOM_NAME);
+ sss_domain_set_state(sub_dom, DOM_ACTIVE);
+ sub_dom->parent = dom;
+ dom->subdomains = sub_dom;
+ sub_dom->names = dom->names;
+
+ ret = sss_ncache_reset_repopulate_permanent(ts->rctx, ncache);
+ assert_int_equal(ret, EOK);
+
+ expect_in_parent(ncache, dom);
+ expect_in_subdomain(ncache, sub_dom);
+ expect_no_entries_in_dom(ncache, dom2);
+}
+
static void test_sss_ncache_reset(void **state)
{
errno_t ret;
@@ -1083,6 +1335,8 @@ int main(void)
setup, teardown),
cmocka_unit_test_setup_teardown(test_sss_ncache_reset_prepopulate,
setup, teardown),
+ cmocka_unit_test_setup_teardown(test_sss_ncache_short_name_in_domain,
+ setup, teardown),
cmocka_unit_test_setup_teardown(test_sss_ncache_reset,
setup, teardown),
cmocka_unit_test_setup_teardown(test_sss_ncache_locate_uid_gid,
--
2.21.3
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