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nss-mdns/SOURCES/nss-mdns-local-heuristic-un...

113 lines
4.7 KiB

From 6ff47454ff413e3033a77d4d9c09b914c78ab3a0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20Men=C5=A1=C3=ADk?= <pemensik@redhat.com>
Date: Wed, 7 Dec 2022 22:56:47 +0100
Subject: [PATCH] Add unit test parts for new autodetection
Use new enum to specify forced present or missing .local SOA record. Use
from production code auto value, but use forced values from unit test.
Add few different results to unit test.
---
src/nss.c | 3 ++-
src/util.c | 7 +++++--
src/util.h | 9 ++++++++-
tests/check_util.c | 18 ++++++++++++++++++
4 files changed, 33 insertions(+), 4 deletions(-)
diff --git a/src/nss.c b/src/nss.c
index 7f9230e..2e1a90b 100644
--- a/src/nss.c
+++ b/src/nss.c
@@ -118,7 +118,8 @@ enum nss_status _nss_mdns_gethostbyname_impl(const char* name, int af,
#ifndef MDNS_MINIMAL
mdns_allow_file = fopen(MDNS_ALLOW_FILE, "r");
#endif
- result = verify_name_allowed_with_soa(name, mdns_allow_file);
+ result = verify_name_allowed_with_soa(name, mdns_allow_file,
+ TEST_LOCAL_SOA_AUTO);
#ifndef MDNS_MINIMAL
if (mdns_allow_file)
fclose(mdns_allow_file);
diff --git a/src/util.c b/src/util.c
index 4eacf07..0a1c28a 100644
--- a/src/util.c
+++ b/src/util.c
@@ -55,14 +55,17 @@ int ends_with(const char* name, const char* suffix) {
return strcasecmp(name + ln - ls, suffix) == 0;
}
-use_name_result_t verify_name_allowed_with_soa(const char* name, FILE* mdns_allow_file) {
+use_name_result_t verify_name_allowed_with_soa(const char* name,
+ FILE* mdns_allow_file,
+ test_local_soa_t test) {
switch (verify_name_allowed(name, mdns_allow_file)) {
case VERIFY_NAME_RESULT_NOT_ALLOWED:
return USE_NAME_RESULT_SKIP;
case VERIFY_NAME_RESULT_ALLOWED:
return USE_NAME_RESULT_AUTHORITATIVE;
case VERIFY_NAME_RESULT_ALLOWED_IF_NO_LOCAL_SOA:
- if (local_soa())
+ if (test == TEST_LOCAL_SOA_YES ||
+ (test == TEST_LOCAL_SOA_AUTO && local_soa()) )
/* Make multicast resolution not authoritative for .local zone.
* Allow continuing to unicast resolution after multicast had not worked. */
return USE_NAME_RESULT_OPTIONAL;
diff --git a/src/util.h b/src/util.h
index 76809d4..80527e3 100644
--- a/src/util.h
+++ b/src/util.h
@@ -67,6 +67,12 @@ typedef enum {
USE_NAME_RESULT_OPTIONAL,
} use_name_result_t;
+typedef enum {
+ TEST_LOCAL_SOA_NO,
+ TEST_LOCAL_SOA_YES,
+ TEST_LOCAL_SOA_AUTO,
+} test_local_soa_t;
+
// Returns true if we should try to resolve the name with mDNS.
//
// If mdns_allow_file is NULL, then this implements the "local" SOA
@@ -78,7 +84,8 @@ typedef enum {
// The two heuristics described above are disabled if mdns_allow_file
// is not NULL.
use_name_result_t verify_name_allowed_with_soa(const char* name,
- FILE* mdns_allow_file);
+ FILE* mdns_allow_file,
+ test_local_soa_t test);
typedef enum {
VERIFY_NAME_RESULT_NOT_ALLOWED,
diff --git a/tests/check_util.c b/tests/check_util.c
index d600a2e..36f1008 100644
--- a/tests/check_util.c
+++ b/tests/check_util.c
@@ -50,6 +50,24 @@ START_TEST(test_verify_name_allowed_minimal) {
VERIFY_NAME_RESULT_NOT_ALLOWED);
ck_assert_int_eq(verify_name_allowed(".", NULL),
VERIFY_NAME_RESULT_NOT_ALLOWED);
+
+ ck_assert_int_eq(verify_name_allowed_with_soa(".", NULL, TEST_LOCAL_SOA_YES),
+ USE_NAME_RESULT_SKIP);
+ ck_assert_int_eq(verify_name_allowed_with_soa(".", NULL, TEST_LOCAL_SOA_NO),
+ USE_NAME_RESULT_SKIP);
+ ck_assert_int_eq(verify_name_allowed_with_soa(".", NULL, TEST_LOCAL_SOA_AUTO),
+ USE_NAME_RESULT_SKIP);
+ ck_assert_int_eq(verify_name_allowed_with_soa("example3.sub.local",
+ NULL, TEST_LOCAL_SOA_YES), USE_NAME_RESULT_SKIP);
+ ck_assert_int_eq(verify_name_allowed_with_soa("example4.sub.local",
+ NULL, TEST_LOCAL_SOA_NO), USE_NAME_RESULT_SKIP);
+ ck_assert_int_eq(verify_name_allowed_with_soa("example4.sub.local",
+ NULL, TEST_LOCAL_SOA_AUTO), USE_NAME_RESULT_SKIP);
+ ck_assert_int_eq(verify_name_allowed_with_soa("example1.local",
+ NULL, TEST_LOCAL_SOA_YES), USE_NAME_RESULT_OPTIONAL);
+ ck_assert_int_eq(verify_name_allowed_with_soa("example2.local",
+ NULL, TEST_LOCAL_SOA_NO), USE_NAME_RESULT_AUTHORITATIVE);
+ /* TEST_LOCAL_SOA_AUTO would test actual DNS on host, skip that. */
}
END_TEST
--
2.38.1