common: do not use DNS to determine if address is local

Co-authored-by: j-berman <justinberman@protonmail.com>

2 files changed, 51 insertions, 0 deletions

diff --git a/tests/unit_tests/CMakeLists.txt b/tests/unit_tests/CMakeLists.txt
index cbed5e6de..57bd568fc 100644
--- a/tests/unit_tests/CMakeLists.txt
+++ b/tests/unit_tests/CMakeLists.txt
@@ -91,6 +91,7 @@ set(unit_tests_sources
   unbound.cpp
   uri.cpp
   variant.cpp
+  util.cpp
   varint.cpp
   ver_rct_non_semantics_simple_cached.cpp
   ringct.cpp
diff --git a/tests/unit_tests/util.cpp b/tests/unit_tests/util.cpp
new file mode 100644
index 000000000..9285d2000
--- /dev/null
+++ b/tests/unit_tests/util.cpp
@@ -0,0 +1,50 @@
+// Copyright (c) 2023-2023, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "gtest/gtest.h"
+
+#include "common/util.h"
+
+TEST(LocalAddress, localhost) { ASSERT_TRUE(tools::is_local_address("localhost")); }
+TEST(LocalAddress, localhost_port) { ASSERT_TRUE(tools::is_local_address("localhost:18081")); }
+TEST(LocalAddress, localhost_suffix) { ASSERT_TRUE(tools::is_local_address("test.localhost")); }
+TEST(LocalAddress, loopback) { ASSERT_TRUE(tools::is_local_address("127.0.0.1")); }
+TEST(LocalAddress, loopback_port) { ASSERT_TRUE(tools::is_local_address("127.0.0.1:18081")); }
+TEST(LocalAddress, loopback_protocol) { ASSERT_TRUE(tools::is_local_address("http://127.0.0.1")); }
+TEST(LocalAddress, loopback_hi) { ASSERT_TRUE(tools::is_local_address("127.255.255.255")); }
+TEST(LocalAddress, loopback_lo) { ASSERT_TRUE(tools::is_local_address("127.0.0.0")); }
+TEST(LocalAddress, loopback_ipv6) { ASSERT_TRUE(tools::is_local_address("[0:0:0:0:0:0:0:1]")); }
+
+TEST(LocalAddress, onion) { ASSERT_FALSE(tools::is_local_address("vww6ybal4bd7szmgncyruucpgfkqahzddi37ktceo3ah7ngmcopnpyyd.onion")); }
+TEST(LocalAddress, i2p) { ASSERT_FALSE(tools::is_local_address("xmrto2bturnore26xmrto2bturnore26xmrto2bturnore26xmr2.b32.i2p")); }
+TEST(LocalAddress, valid_ip) { ASSERT_FALSE(tools::is_local_address("1.2.3.4")); }
+TEST(LocalAddress, valid_ipv6) { ASSERT_FALSE(tools::is_local_address("[0:0:0:0:0:0:0:2]")); }
+TEST(LocalAddress, valid_domain) { ASSERT_FALSE(tools::is_local_address("getmonero.org")); }
+TEST(LocalAddress, local_prefix) { ASSERT_FALSE(tools::is_local_address("localhost.com")); }
+TEST(LocalAddress, invalid) { ASSERT_FALSE(tools::is_local_address("test")); }
+TEST(LocalAddress, empty) { ASSERT_FALSE(tools::is_local_address("")); }