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all: slog ipset

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This commit is contained in:
Stanislav Chzhen 2024-08-21 16:42:44 +03:00
parent 30c0bbe5cc
commit 72adfb101f
8 changed files with 75 additions and 42 deletions
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10
internal/dnsforward/config.go
View file

@ -457,24 +457,24 @@ func (s *Server) initDefaultSettings() {
// prepareIpsetListSettings reads and prepares the ipset configuration either
// from a file or from the data in the configuration file.
func (s *Server) prepareIpsetListSettings() (err error) {
func (s *Server) prepareIpsetListSettings() (ipsets []string, err error) {
fn := s.conf.IpsetListFileName
if fn == "" {
return s.ipset.init(s.conf.IpsetList)
return s.conf.IpsetList, nil
}
// #nosec G304 -- Trust the path explicitly given by the user.
data, err := os.ReadFile(fn)
if err != nil {
return err
return nil, err
}
ipsets := stringutil.SplitTrimmed(string(data), "\n")
ipsets = stringutil.SplitTrimmed(string(data), "\n")
ipsets = stringutil.FilterOut(ipsets, IsCommentOrEmpty)
log.Debug("dns: using %d ipset rules from file %q", len(ipsets), fn)
return s.ipset.init(ipsets)
return ipsets, nil
}
// loadUpstreams parses upstream DNS servers from the configured file or from

10
internal/dnsforward/dnsforward.go
View file

@ -134,7 +134,7 @@ type Server struct {
localDomainSuffix string
// ipset processes DNS requests using ipset data.
ipset ipsetCtx
ipset *ipsetCtx
// privateNets is the configured set of IP networks considered private.
privateNets netutil.SubnetSet
@ -609,11 +609,17 @@ func (s *Server) prepareLocalResolvers() (uc *proxy.UpstreamConfig, err error) {
// the primary DNS proxy instance. It assumes s.serverLock is locked or the
// Server not running.
func (s *Server) prepareInternalDNS() (err error) {
err = s.prepareIpsetListSettings()
ipsetConf, err := s.prepareIpsetListSettings()
if err != nil {
return fmt.Errorf("preparing ipset settings: %w", err)
}
s.ipset, err = newIPSetCtx(s.logger, ipsetConf)
if err != nil {
// Don't wrap the error, because it's informative enough as is.
return err
}
bootOpts := &upstream.Options{
Timeout: DefaultTimeout,
HTTPVersions: UpstreamHTTPVersions(s.conf.UseHTTP3Upstreams),

39
internal/dnsforward/ipset.go
View file

@ -2,26 +2,31 @@ package dnsforward
import (
"fmt"
"log/slog"
"net"
"os"
"strings"
"github.com/AdguardTeam/AdGuardHome/internal/ipset"
"github.com/AdguardTeam/golibs/errors"
"github.com/AdguardTeam/golibs/log"
"github.com/AdguardTeam/golibs/logutil/slogutil"
"github.com/miekg/dns"
)
// ipsetCtx is the ipset context. ipsetMgr can be nil.
type ipsetCtx struct {
ipsetMgr ipset.Manager
logger *slog.Logger
}
// init initializes the ipset context. It is not safe for concurrent use.
//
// TODO(a.garipov): Rewrite into a simple constructor?
func (c *ipsetCtx) init(ipsetConf []string) (err error) {
c.ipsetMgr, err = ipset.NewManager(ipsetConf)
// newIPSetCtx returns a new initialized [ipsetCtx]. It is not safe for
// concurrent use.
func newIPSetCtx(logger *slog.Logger, ipsetConf []string) (c *ipsetCtx, err error) {
c = &ipsetCtx{
logger: logger,
}
ipsetLogger := logger.With(slogutil.KeyPrefix, "ipset")
c.ipsetMgr, err = ipset.NewManager(ipsetLogger, ipsetConf)
if errors.Is(err, os.ErrInvalid) || errors.Is(err, os.ErrPermission) {
// ipset cannot currently be initialized if the server was installed
// from Snap or when the user or the binary doesn't have the required
@ -31,18 +36,18 @@ func (c *ipsetCtx) init(ipsetConf []string) (err error) {
//
// TODO(a.garipov): The Snap problem can probably be solved if we add
// the netlink-connector interface plug.
log.Info("ipset: warning: cannot initialize: %s", err)
logger.Warn("ipset: cannot initialize", slogutil.KeyError, err)
return nil
return c, nil
} else if errors.Is(err, errors.ErrUnsupported) {
log.Info("ipset: warning: %s", err)
logger.Warn("ipset: cannot initialize", slogutil.KeyError, err)
return nil
return c, nil
} else if err != nil {
return fmt.Errorf("initializing ipset: %w", err)
return nil, fmt.Errorf("initializing ipset: %w", err)
}
return nil
return c, nil
}
// close closes the Linux Netfilter connections.
@ -109,15 +114,13 @@ func ipsFromAnswer(ans []dns.RR) (ip4s, ip6s []net.IP) {
// process adds the resolved IP addresses to the domain's ipsets, if any.
func (c *ipsetCtx) process(dctx *dnsContext) (rc resultCode) {
log.Debug("dnsforward: ipset: started processing")
defer log.Debug("dnsforward: ipset: finished processing")
c.logger.Debug("ipset: started processing")
defer c.logger.Debug("ipset: finished processing")
if c.skipIpsetProcessing(dctx) {
return resultCodeSuccess
}
log.Debug("ipset: starting processing")
req := dctx.proxyCtx.Req
host := req.Question[0].Name
host = strings.TrimSuffix(host, ".")
@ -127,12 +130,12 @@ func (c *ipsetCtx) process(dctx *dnsContext) (rc resultCode) {
n, err := c.ipsetMgr.Add(host, ip4s, ip6s)
if err != nil {
// Consider ipset errors non-critical to the request.
log.Error("dnsforward: ipset: adding host ips: %s", err)
c.logger.Error("ipset: adding host ips", slogutil.KeyError, err)
return resultCodeSuccess
}
log.Debug("dnsforward: ipset: added %d new ipset entries", n)
c.logger.Debug("ipset: added new ipset entries", "num", n)
return resultCodeSuccess
}

8
internal/dnsforward/ipset_internal_test.go
View file

@ -5,6 +5,7 @@ import (
"testing"
"github.com/AdguardTeam/dnsproxy/proxy"
"github.com/AdguardTeam/golibs/logutil/slogutil"
"github.com/miekg/dns"
"github.com/stretchr/testify/assert"
)
@ -58,7 +59,9 @@ func TestIpsetCtx_process(t *testing.T) {
responseFromUpstream: true,
}
ictx := &ipsetCtx{}
ictx := &ipsetCtx{
logger: slogutil.NewDiscardLogger(),
}
rc := ictx.process(dctx)
assert.Equal(t, resultCodeSuccess, rc)
@ -79,6 +82,7 @@ func TestIpsetCtx_process(t *testing.T) {
m := &fakeIpsetMgr{}
ictx := &ipsetCtx{
ipsetMgr: m,
logger: slogutil.NewDiscardLogger(),
}
rc := ictx.process(dctx)
@ -103,6 +107,7 @@ func TestIpsetCtx_process(t *testing.T) {
m := &fakeIpsetMgr{}
ictx := &ipsetCtx{
ipsetMgr: m,
logger: slogutil.NewDiscardLogger(),
}
rc := ictx.process(dctx)
@ -126,6 +131,7 @@ func TestIpsetCtx_SkipIpsetProcessing(t *testing.T) {
m := &fakeIpsetMgr{}
ictx := &ipsetCtx{
ipsetMgr: m,
logger: slogutil.NewDiscardLogger(),
}
testCases := []struct {

5
internal/ipset/ipset.go
View file

@ -2,6 +2,7 @@
package ipset
import (
"log/slog"
"net"
)
@ -24,10 +25,10 @@ type Manager interface {
//
// If ipsetConf is empty, msg and err are nil. The error's chain contains
// [errors.ErrUnsupported] if current OS is not supported.
func NewManager(ipsetConf []string) (mgr Manager, err error) {
func NewManager(logger *slog.Logger, ipsetConf []string) (mgr Manager, err error) {
if len(ipsetConf) == 0 {
return nil, nil
}
return newManager(ipsetConf)
return newManager(logger, ipsetConf)
}

38
internal/ipset/ipset_linux.go
View file

@ -5,13 +5,14 @@ package ipset
import (
"bytes"
"fmt"
"log/slog"
"net"
"strings"
"sync"
"github.com/AdguardTeam/golibs/container"
"github.com/AdguardTeam/golibs/errors"
"github.com/AdguardTeam/golibs/log"
"github.com/AdguardTeam/golibs/logutil/slogutil"
"github.com/digineo/go-ipset/v2"
"github.com/mdlayher/netlink"
"github.com/ti-mo/netfilter"
@ -34,8 +35,8 @@ import (
// resolved IP addresses.
// newManager returns a new Linux ipset manager.
func newManager(ipsetConf []string) (set Manager, err error) {
return newManagerWithDialer(ipsetConf, defaultDial)
func newManager(logger *slog.Logger, ipsetConf []string) (set Manager, err error) {
return newManagerWithDialer(logger, ipsetConf, defaultDial)
}
// defaultDial is the default netfilter dialing function.
@ -180,6 +181,8 @@ type manager struct {
nameToIpset map[string]props
domainToIpsets map[string][]props
logger *slog.Logger
dial dialer
// mu protects all properties below.
@ -336,10 +339,11 @@ func (m *manager) ipsets(names []string, currentlyKnown map[string]props) (sets
}
if p.family != netfilter.ProtoIPv4 && p.family != netfilter.ProtoIPv6 {
log.Debug("ipset: getting properties: %q %q unexpected ipset family %q",
p.name,
p.typeName,
p.family,
m.logger.Debug("getting properties",
slogutil.KeyError, "unexpected ipset family",
"set_name", p.name,
"set_type", p.typeName,
"set_family", p.family,
)
p, err = m.ipsetProps(n)
@ -357,7 +361,11 @@ func (m *manager) ipsets(names []string, currentlyKnown map[string]props) (sets
// newManagerWithDialer returns a new Linux ipset manager using the provided
// dialer.
func newManagerWithDialer(ipsetConf []string, dial dialer) (mgr Manager, err error) {
func newManagerWithDialer(
logger *slog.Logger,
ipsetConf []string,
dial dialer,
) (mgr Manager, err error) {
defer func() { err = errors.Annotate(err, "ipset: %w") }()
m := &manager{
@ -366,6 +374,8 @@ func newManagerWithDialer(ipsetConf []string, dial dialer) (mgr Manager, err err
nameToIpset: make(map[string]props),
domainToIpsets: make(map[string][]props),
logger: logger,
dial: dial,
addedIPs: container.NewMapSet[ipInIpsetEntry](),
@ -376,7 +386,7 @@ func newManagerWithDialer(ipsetConf []string, dial dialer) (mgr Manager, err err
if errors.Is(err, unix.EPROTONOSUPPORT) {
// The implementation doesn't support this protocol version. Just
// issue a warning.
log.Info("ipset: dialing netfilter: warning: %s", err)
logger.Warn("dialing netfilter", slogutil.KeyError, err)
return nil, nil
}
@ -389,7 +399,7 @@ func newManagerWithDialer(ipsetConf []string, dial dialer) (mgr Manager, err err
return nil, fmt.Errorf("getting ipsets: %w", err)
}
log.Debug("ipset: initialized")
logger.Debug("initialized")
return m, nil
}
@ -498,7 +508,11 @@ func (m *manager) addToSets(
return n, fmt.Errorf("%q %q unexpected family %q", set.name, set.typeName, set.family)
}
log.Debug("ipset: added %d ips to set %q %q", nn, set.name, set.typeName)
m.logger.Debug("added ips to set",
"ips_num", nn,
"set_name", set.name,
"set_type", set.typeName,
)
n += nn
}
@ -516,7 +530,7 @@ func (m *manager) Add(host string, ip4s, ip6s []net.IP) (n int, err error) {
return 0, nil
}
log.Debug("ipset: found %d sets", len(sets))
m.logger.Debug("found sets", "set_num", len(sets))
return m.addToSets(host, ip4s, ip6s, sets)
}

3
internal/ipset/ipset_linux_internal_test.go
View file

@ -8,6 +8,7 @@ import (
"testing"
"github.com/AdguardTeam/golibs/errors"
"github.com/AdguardTeam/golibs/logutil/slogutil"
"github.com/digineo/go-ipset/v2"
"github.com/mdlayher/netlink"
"github.com/stretchr/testify/assert"
@ -89,7 +90,7 @@ func TestManager_Add(t *testing.T) {
}, nil
}
m, err := newManagerWithDialer(ipsetConf, fakeDial)
m, err := newManagerWithDialer(slogutil.NewDiscardLogger(), ipsetConf, fakeDial)
require.NoError(t, err)
ip4 := net.IP{1, 2, 3, 4}

4
internal/ipset/ipset_others.go
View file

@ -3,9 +3,11 @@
package ipset
import (
"log/slog"
"github.com/AdguardTeam/AdGuardHome/internal/aghos"
)
func newManager(_ []string) (mgr Manager, err error) {
func newManager(_ *slog.Logger, _ []string) (mgr Manager, err error) {
return nil, aghos.Unsupported("ipset")
}