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use std::{borrow::Cow, vec};
use nftables::{
batch::Batch,
expr,
helper::{self, NftablesError},
schema::{self, Chain, Rule, Table},
stmt, types,
};
use serial_test::serial;
#[test]
#[ignore]
#[serial]
/// Reads current ruleset from nftables and reads it to `Nftables` Rust struct.
fn test_list_ruleset() {
flush_ruleset().expect("failed to flush ruleset");
helper::get_current_ruleset().unwrap();
}
#[test]
#[ignore]
/// Attempts to read current ruleset from nftables using non-existing nft binary.
fn test_list_ruleset_invalid_program() {
let result = helper::get_current_ruleset_with_args(Some("/dev/null/nft"), helper::DEFAULT_ARGS);
let err =
result.expect_err("getting the current ruleset should fail with non-existing nft binary");
assert!(matches!(err, NftablesError::NftExecution { .. }));
}
#[test]
#[ignore]
#[serial]
/// Applies an example ruleset to nftables, lists single map/set through nft args.
fn test_nft_args_list_map_set() {
flush_ruleset().expect("failed to flush ruleset");
let ruleset = example_ruleset(false);
nftables::helper::apply_ruleset(&ruleset).unwrap();
// nft should return two list object: metainfo and the set/map
let applied = helper::get_current_ruleset_with_args(
helper::DEFAULT_NFT,
["list", "map", "ip", "test-table-01", "test_map"],
)
.unwrap();
assert_eq!(2, applied.objects.len());
let applied = helper::get_current_ruleset_with_args(
helper::DEFAULT_NFT,
["list", "set", "ip", "test-table-01", "test_set"],
)
.unwrap();
assert_eq!(2, applied.objects.len());
}
#[test]
#[ignore]
#[serial]
/// Test that AnonymousCounter can be applied with [Option::None] values.
fn test_regr_anoncounter_none() {
flush_ruleset().expect("failed to flush ruleset");
let mut batch = Batch::new();
// create table "test-table-02" and chain "test-chain-02".
let table_name: &'static str = "test-table-02";
batch.add(schema::NfListObject::Table(Table {
name: table_name.into(),
family: types::NfFamily::IP,
..Table::default()
}));
batch.add(schema::NfListObject::Chain(Chain {
name: "test-chain-02".into(),
family: types::NfFamily::IP,
table: table_name.into(),
..Chain::default()
}));
// create rule with multiple forms of [nftables::stmt::AnonymousCounter].
batch.add(schema::NfListObject::Rule(Rule {
chain: "test-chain-02".into(),
family: types::NfFamily::IP,
table: table_name.into(),
expr: [
stmt::Statement::Counter(nftables::stmt::Counter::Anonymous(Some(
nftables::stmt::AnonymousCounter {
packets: None,
bytes: None,
},
))),
stmt::Statement::Counter(nftables::stmt::Counter::Anonymous(Some(
nftables::stmt::AnonymousCounter {
packets: Some(0),
bytes: Some(0),
},
))),
][..]
.into(),
..Rule::default()
}));
let ruleset = batch.to_nftables();
let result = nftables::helper::apply_ruleset(&ruleset);
assert!(result.is_ok());
}
#[test]
#[ignore]
#[serial]
/// Applies a ruleset to nftables.
fn test_apply_ruleset() {
flush_ruleset().expect("failed to flush ruleset");
let ruleset = example_ruleset(true);
nftables::helper::apply_ruleset(&ruleset).unwrap();
}
#[test]
#[ignore]
#[serial]
/// Attempts to delete an unknown table, expecting an error.
fn test_remove_unknown_table() {
flush_ruleset().expect("failed to flush ruleset");
let mut batch = Batch::new();
batch.delete(schema::NfListObject::Table(schema::Table {
family: types::NfFamily::IP6,
name: "i-do-not-exist".into(),
..Table::default()
}));
let ruleset = batch.to_nftables();
let result = nftables::helper::apply_ruleset(&ruleset);
let err = result.expect_err("Expecting nftables error for unknown table.");
assert!(matches!(err, NftablesError::NftFailed { .. }));
}
fn example_ruleset(with_undo: bool) -> schema::Nftables<'static> {
let mut batch = Batch::new();
// create table "test-table-01"
let table_name: &'static str = "test-table-01";
batch.add(schema::NfListObject::Table(Table {
name: table_name.into(),
family: types::NfFamily::IP,
..Table::default()
}));
// create named set "test_set"
let set_name = "test_set";
batch.add(schema::NfListObject::Set(Box::new(schema::Set {
family: types::NfFamily::IP,
table: table_name.into(),
name: set_name.into(),
set_type: schema::SetTypeValue::Single(schema::SetType::Ipv4Addr),
..schema::Set::default()
})));
// create named map "test_map"
batch.add(schema::NfListObject::Map(Box::new(schema::Map {
family: types::NfFamily::IP,
table: table_name.into(),
name: "test_map".into(),
map: schema::SetTypeValue::Single(schema::SetType::EtherAddr),
set_type: schema::SetTypeValue::Single(schema::SetType::Ipv4Addr),
..schema::Map::default()
})));
// add element to set
batch.add(schema::NfListObject::Element(schema::Element {
family: types::NfFamily::IP,
table: table_name.into(),
name: set_name.into(),
elem: Cow::Owned(vec![
expr::Expression::String("127.0.0.1".into()),
expr::Expression::String("127.0.0.2".into()),
]),
}));
if with_undo {
batch.delete(schema::NfListObject::Table(schema::Table {
family: types::NfFamily::IP,
name: "test-table-01".into(),
..Table::default()
}));
}
batch.to_nftables()
}
fn get_flush_ruleset() -> schema::Nftables<'static> {
let mut batch = Batch::new();
batch.add_cmd(schema::NfCmd::Flush(schema::FlushObject::Ruleset(None)));
batch.to_nftables()
}
fn flush_ruleset() -> Result<(), NftablesError> {
let ruleset = get_flush_ruleset();
nftables::helper::apply_ruleset(&ruleset)
}
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