[pve-devel] [PATCH proxmox-firewall 05/15] sdn: add support for loading vnet-level firewall config
Stefan Hanreich
s.hanreich at proxmox.com
Wed Sep 11 11:31:06 CEST 2024
Signed-off-by: Stefan Hanreich <s.hanreich at proxmox.com>
---
proxmox-firewall/src/config.rs | 88 ++++++++++++++++++++-
proxmox-firewall/tests/integration_tests.rs | 12 +++
2 files changed, 98 insertions(+), 2 deletions(-)
diff --git a/proxmox-firewall/src/config.rs b/proxmox-firewall/src/config.rs
index c27aac6..ac60e15 100644
--- a/proxmox-firewall/src/config.rs
+++ b/proxmox-firewall/src/config.rs
@@ -1,10 +1,11 @@
use std::collections::BTreeMap;
use std::default::Default;
-use std::fs::File;
+use std::fs::{self, DirEntry, File, ReadDir};
use std::io::{self, BufReader};
-use anyhow::{format_err, Context, Error};
+use anyhow::{bail, format_err, Context, Error};
+use proxmox_ve_config::firewall::bridge::Config as BridgeConfig;
use proxmox_ve_config::firewall::cluster::Config as ClusterConfig;
use proxmox_ve_config::firewall::guest::Config as GuestConfig;
use proxmox_ve_config::firewall::host::Config as HostConfig;
@@ -12,6 +13,7 @@ use proxmox_ve_config::firewall::types::alias::{Alias, AliasName, AliasScope};
use proxmox_ve_config::guest::types::Vmid;
use proxmox_ve_config::guest::{GuestEntry, GuestMap};
+use proxmox_ve_config::host::types::BridgeName;
use proxmox_nftables::command::{CommandOutput, Commands, List, ListOutput};
use proxmox_nftables::types::ListChain;
@@ -33,6 +35,11 @@ pub trait FirewallConfigLoader {
fn guest_firewall_config(&self, vmid: &Vmid) -> Result<Option<Box<dyn io::BufRead>>, Error>;
fn sdn_running_config(&self) -> Result<Option<Box<dyn io::BufRead>>, Error>;
fn ipam(&self) -> Result<Option<Box<dyn io::BufRead>>, Error>;
+ fn bridge_list(&self) -> Result<Vec<BridgeName>, Error>;
+ fn bridge_firewall_config(
+ &self,
+ bridge_name: &BridgeName,
+ ) -> Result<Option<Box<dyn io::BufRead>>, Error>;
}
#[derive(Default)]
@@ -61,8 +68,31 @@ fn open_config_file(path: &str) -> Result<Option<File>, Error> {
}
}
+fn open_config_folder(path: &str) -> Result<Option<ReadDir>, Error> {
+ match fs::read_dir(path) {
+ Ok(paths) => Ok(Some(paths)),
+ Err(err) if err.kind() == io::ErrorKind::NotFound => {
+ log::info!("SDN config folder {path} does not exist");
+ Ok(None)
+ }
+ Err(err) => {
+ let context = format!("unable to open configuration folder at {BRIDGE_CONFIG_PATH}");
+ Err(anyhow::Error::new(err).context(context))
+ }
+ }
+}
+
+fn fw_name(dir_entry: DirEntry) -> Option<String> {
+ dir_entry
+ .file_name()
+ .to_str()?
+ .strip_suffix(".fw")
+ .map(str::to_string)
+}
+
const CLUSTER_CONFIG_PATH: &str = "/etc/pve/firewall/cluster.fw";
const HOST_CONFIG_PATH: &str = "/etc/pve/local/host.fw";
+const BRIDGE_CONFIG_PATH: &str = "/etc/pve/sdn/firewall";
const SDN_RUNNING_CONFIG_PATH: &str = "/etc/pve/sdn/.running-config";
const SDN_IPAM_PATH: &str = "/etc/pve/priv/ipam.db";
@@ -154,6 +184,38 @@ impl FirewallConfigLoader for PveFirewallConfigLoader {
Ok(None)
}
+
+ fn bridge_list(&self) -> Result<Vec<BridgeName>, Error> {
+ let mut bridges = Vec::new();
+
+ if let Some(files) = open_config_folder(BRIDGE_CONFIG_PATH)? {
+ for file in files {
+ let bridge_name = fw_name(file?).map(BridgeName::new).transpose()?;
+
+ if let Some(bridge_name) = bridge_name {
+ bridges.push(bridge_name);
+ }
+ }
+ }
+
+ Ok(bridges)
+ }
+
+ fn bridge_firewall_config(
+ &self,
+ bridge_name: &BridgeName,
+ ) -> Result<Option<Box<dyn io::BufRead>>, Error> {
+ log::info!("loading firewall config for bridge {bridge_name}");
+
+ let fd = open_config_file(&format!("/etc/pve/sdn/firewall/{bridge_name}.fw"))?;
+
+ if let Some(file) = fd {
+ let buf_reader = Box::new(BufReader::new(file)) as Box<dyn io::BufRead>;
+ return Ok(Some(buf_reader));
+ }
+
+ Ok(None)
+ }
}
pub trait NftConfigLoader {
@@ -184,6 +246,7 @@ pub struct FirewallConfig {
cluster_config: ClusterConfig,
host_config: HostConfig,
guest_config: BTreeMap<Vmid, GuestConfig>,
+ bridge_config: BTreeMap<BridgeName, BridgeConfig>,
nft_config: BTreeMap<String, ListChain>,
sdn_config: Option<SdnConfig>,
ipam_config: Option<Ipam>,
@@ -284,6 +347,22 @@ impl FirewallConfig {
Ok(chains)
}
+ pub fn parse_bridges(
+ firewall_loader: &dyn FirewallConfigLoader,
+ ) -> Result<BTreeMap<BridgeName, BridgeConfig>, Error> {
+ let mut bridge_config = BTreeMap::new();
+
+ for bridge_name in firewall_loader.bridge_list()? {
+ if let Some(config) = firewall_loader.bridge_firewall_config(&bridge_name)? {
+ bridge_config.insert(bridge_name, BridgeConfig::parse(config)?);
+ } else {
+ bail!("Could not read config for {bridge_name}")
+ }
+ }
+
+ Ok(bridge_config)
+ }
+
pub fn new(
firewall_loader: &dyn FirewallConfigLoader,
nft_loader: &dyn NftConfigLoader,
@@ -292,6 +371,7 @@ impl FirewallConfig {
cluster_config: Self::parse_cluster(firewall_loader)?,
host_config: Self::parse_host(firewall_loader)?,
guest_config: Self::parse_guests(firewall_loader)?,
+ bridge_config: Self::parse_bridges(firewall_loader)?,
sdn_config: Self::parse_sdn(firewall_loader)?,
ipam_config: Self::parse_ipam(firewall_loader)?,
nft_config: Self::parse_nft(nft_loader)?,
@@ -310,6 +390,10 @@ impl FirewallConfig {
&self.guest_config
}
+ pub fn bridges(&self) -> &BTreeMap<BridgeName, BridgeConfig> {
+ &self.bridge_config
+ }
+
pub fn nft_chains(&self) -> &BTreeMap<String, ListChain> {
&self.nft_config
}
diff --git a/proxmox-firewall/tests/integration_tests.rs b/proxmox-firewall/tests/integration_tests.rs
index 5de1a4e..61a8062 100644
--- a/proxmox-firewall/tests/integration_tests.rs
+++ b/proxmox-firewall/tests/integration_tests.rs
@@ -7,6 +7,7 @@ use proxmox_nftables::command::CommandOutput;
use proxmox_sys::nodename;
use proxmox_ve_config::guest::types::Vmid;
use proxmox_ve_config::guest::{GuestEntry, GuestMap, GuestType};
+use proxmox_ve_config::host::types::BridgeName;
struct MockFirewallConfigLoader {}
@@ -79,6 +80,17 @@ impl FirewallConfigLoader for MockFirewallConfigLoader {
fn ipam(&self) -> Result<Option<Box<dyn std::io::BufRead>>, Error> {
Ok(Some(Box::new(include_str!("input/ipam.db").as_bytes())))
}
+
+ fn bridge_list(&self) -> Result<Vec<BridgeName>, Error> {
+ Ok(Vec::new())
+ }
+
+ fn bridge_firewall_config(
+ &self,
+ bridge_name: &BridgeName,
+ ) -> Result<Option<Box<dyn std::io::BufRead>>, Error> {
+ Ok(None)
+ }
}
struct MockNftConfigLoader {}
--
2.39.2
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