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net: canonicalize Tor/I2P hosts during deserialization

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This commit is contained in:
selsta
2026-06-03 17:20:11 +02:00
parent aaa71635b6
commit 0fc5bb7c86
3 changed files with 45 additions and 9 deletions
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src/net/i2p_address.cpp
+8 -4
View File
@@ -117,11 +117,15 @@ namespace net
bool i2p_address::_load(epee::serialization::portable_storage& src, epee::serialization::section* hparent)
{
i2p_serialized in{};
if (in._load(src, hparent) && in.host.size() < sizeof(host_) && (in.host == unknown_host || !host_check(in.host).has_error()))
if (in._load(src, hparent) && in.host.size() < sizeof(host_))
{
std::memcpy(host_, in.host.data(), in.host.size());
std::memset(host_ + in.host.size(), 0, sizeof(host_) - in.host.size());
return true;
net::canonicalize_host(in.host);
if (in.host == unknown_host || !host_check(in.host).has_error())
{
std::memcpy(host_, in.host.data(), in.host.size());
std::memset(host_ + in.host.size(), 0, sizeof(host_) - in.host.size());
return true;
}
}
static_assert(sizeof(unknown_host) <= sizeof(host_), "bad buffer size");
std::memcpy(host_, unknown_host, sizeof(unknown_host)); // include null terminator
src/net/tor_address.cpp
+9 -5
View File
@@ -149,12 +149,16 @@ namespace net
bool tor_address::_load(epee::serialization::portable_storage& src, epee::serialization::section* hparent)
{
tor_serialized in{};
if (in._load(src, hparent) && in.host.size() < sizeof(host_) && (in.host == unknown_host || !host_check(in.host).has_error()))
if (in._load(src, hparent) && in.host.size() < sizeof(host_))
{
std::memcpy(host_, in.host.data(), in.host.size());
std::memset(host_ + in.host.size(), 0, sizeof(host_) - in.host.size());
port_ = in.port;
return true;
net::canonicalize_host(in.host);
if (in.host == unknown_host || !host_check(in.host).has_error())
{
std::memcpy(host_, in.host.data(), in.host.size());
std::memset(host_ + in.host.size(), 0, sizeof(host_) - in.host.size());
port_ = in.port;
return true;
}
}
static_assert(sizeof(unknown_host) <= sizeof(host_), "bad buffer size");
std::memcpy(host_, unknown_host, sizeof(unknown_host)); // include null terminator
tests/unit_tests/net.cpp
+28
View File
@@ -300,6 +300,20 @@ TEST(tor_address, epee_serializev_v3)
EXPECT_STREQ(v3_onion, command.tor.host_str());
EXPECT_EQ(10u, command.tor.port());
// make sure tor_address::_load canonicalizes incoming hosts
{
epee::serialization::portable_storage stg{};
stg.load_from_binary(epee::to_span(buffer));
EXPECT_TRUE(stg.set_value("host", std::string{v3_onion_upper}, stg.open_section("tor", nullptr, false)));
EXPECT_TRUE(command.load(stg));
}
EXPECT_FALSE(command.tor.is_unknown());
EXPECT_NE(net::tor_address{}, command.tor);
EXPECT_STREQ(v3_onion, command.tor.host_str());
EXPECT_EQ(10u, command.tor.port());
// make sure that exceeding max buffer doesn't destroy tor_address::_load
{
epee::serialization::portable_storage stg{};
@@ -676,6 +690,20 @@ TEST(i2p_address, epee_serializev_b32)
EXPECT_STREQ(b32_i2p, command.i2p.host_str());
EXPECT_EQ(1u, command.i2p.port());
// make sure i2p_address::_load canonicalizes incoming hosts
{
epee::serialization::portable_storage stg{};
stg.load_from_binary(epee::to_span(buffer));
EXPECT_TRUE(stg.set_value("host", std::string{b32_i2p_upper}, stg.open_section("i2p", nullptr, false)));
EXPECT_TRUE(command.load(stg));
}
EXPECT_FALSE(command.i2p.is_unknown());
EXPECT_NE(net::i2p_address{}, command.i2p);
EXPECT_STREQ(b32_i2p, command.i2p.host_str());
EXPECT_EQ(1u, command.i2p.port());
// make sure that exceeding max buffer doesn't destroy i2p_address::_load
{
epee::serialization::portable_storage stg{};