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Pull request 2166: 5829-trusted-ip

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Updates #5829.

Squashed commit of the following:

commit 8a93b30d5bd1c40c30bd10cd3fc77c3a3a64cb71
Merge: 8e4429c48 54f77c010
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Mar 20 19:15:07 2024 +0300

    Merge branch 'master' into 5829-trusted-ip

commit 8e4429c483c0fd6fffdc93fa808adcca6678bc3e
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Mar 20 18:37:26 2024 +0300

    all: upd chlog

commit b598a8d1ea239cc574bfdfdd6a2da47792582589
Merge: 1f58bf8fd 054233962
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Mar 20 18:34:13 2024 +0300

    Merge branch 'master' into 5829-trusted-ip

commit 1f58bf8fd1bc3b3790475651cb87494885cadf66
Merge: ffb4b9a65 c64a36c94
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Mar 20 17:09:09 2024 +0300

    Merge branch 'master' into 5829-trusted-ip

commit ffb4b9a65fea5555d0d401194d3fc3820b2e6766
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Mar 14 17:40:07 2024 +0300

    home: fix alignment

commit 7f11807ff13eff286be1d3bd4b796273454bdbda
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Mar 14 17:35:13 2024 +0300

    all: imp code

commit 2aee9a66c70af929e28653245eb73c0f29a46e97
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Mon Mar 11 18:17:58 2024 +0300

    home: real ip in logs
This commit is contained in:
Stanislav Chzhen 2024-03-20 19:25:59 +03:00
parent 54f77c0101
commit 3b12ff2cc2
6 changed files with 72 additions and 50 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
CHANGELOG.md
View file

@ -23,10 +23,17 @@ See also the [v0.107.47 GitHub milestone][ms-v0.107.47].
NOTE: Add new changes BELOW THIS COMMENT.
-->
### Changed
- Failed authentication attempts show the originating IP address in the logs, if
the request came from a trusted proxy ([#5829]).
### Deprecated
- Node.JS 16. Future versions will require at least Node.JS 18 to build.
[#5829]: https://github.com/AdguardTeam/AdGuardHome/issues/5829
<!--
NOTE: Add new changes ABOVE THIS COMMENT.
-->

47
internal/home/auth.go
View file

@ -11,6 +11,7 @@ import (
"github.com/AdguardTeam/golibs/errors"
"github.com/AdguardTeam/golibs/log"
"github.com/AdguardTeam/golibs/netutil"
"go.etcd.io/bbolt"
"golang.org/x/crypto/bcrypt"
)
@ -51,14 +52,15 @@ func (s *session) deserialize(data []byte) bool {
return true
}
// Auth - global object
// Auth is the global authentication object.
type Auth struct {
db *bbolt.DB
rateLimiter *authRateLimiter
sessions map[string]*session
users []webUser
lock sync.Mutex
sessionTTL uint32
trustedProxies netutil.SubnetSet
db *bbolt.DB
rateLimiter *authRateLimiter
sessions map[string]*session
users []webUser
lock sync.Mutex
sessionTTL uint32
}
// webUser represents a user of the Web UI.
@ -69,15 +71,22 @@ type webUser struct {
PasswordHash string `yaml:"password"`
}
// InitAuth - create a global object
func InitAuth(dbFilename string, users []webUser, sessionTTL uint32, rateLimiter *authRateLimiter) *Auth {
// InitAuth initializes the global authentication object.
func InitAuth(
dbFilename string,
users []webUser,
sessionTTL uint32,
rateLimiter *authRateLimiter,
trustedProxies netutil.SubnetSet,
) (a *Auth) {
log.Info("Initializing auth module: %s", dbFilename)
a := &Auth{
sessionTTL: sessionTTL,
rateLimiter: rateLimiter,
sessions: make(map[string]*session),
users: users,
a = &Auth{
sessionTTL: sessionTTL,
rateLimiter: rateLimiter,
sessions: make(map[string]*session),
users: users,
trustedProxies: trustedProxies,
}
var err error
a.db, err = bbolt.Open(dbFilename, 0o644, nil)
@ -95,7 +104,7 @@ func InitAuth(dbFilename string, users []webUser, sessionTTL uint32, rateLimiter
return a
}
// Close - close module
// Close closes the authentication database.
func (a *Auth) Close() {
_ = a.db.Close()
}
@ -104,7 +113,8 @@ func bucketName() []byte {
return []byte("sessions-2")
}
// load sessions from file, remove expired sessions
// loadSessions loads sessions from the database file and removes expired
// sessions.
func (a *Auth) loadSessions() {
tx, err := a.db.Begin(true)
if err != nil {
@ -156,7 +166,8 @@ func (a *Auth) loadSessions() {
log.Debug("auth: loaded %d sessions from DB (removed %d expired)", len(a.sessions), removed)
}
// store session data in file
// addSession adds a new session to the list of sessions and saves it in the
// database file.
func (a *Auth) addSession(data []byte, s *session) {
name := hex.EncodeToString(data)
a.lock.Lock()
@ -167,7 +178,7 @@ func (a *Auth) addSession(data []byte, s *session) {
}
}
// store session data in file
// storeSession saves a session in the database file.
func (a *Auth) storeSession(data []byte, s *session) bool {
tx, err := a.db.Begin(true)
if err != nil {

6
internal/home/auth_internal_test.go
View file

@ -37,7 +37,7 @@ func TestAuth(t *testing.T) {
Name: "name",
PasswordHash: "$2y$05$..vyzAECIhJPfaQiOK17IukcQnqEgKJHy0iETyYqxn3YXJl8yZuo2",
}}
a := InitAuth(fn, nil, 60, nil)
a := InitAuth(fn, nil, 60, nil, nil)
s := session{}
user := webUser{Name: "name"}
@ -66,7 +66,7 @@ func TestAuth(t *testing.T) {
a.Close()
// load saved session
a = InitAuth(fn, users, 60, nil)
a = InitAuth(fn, users, 60, nil, nil)
// the session is still alive
assert.Equal(t, checkSessionOK, a.checkSession(sessStr))
@ -82,7 +82,7 @@ func TestAuth(t *testing.T) {
time.Sleep(3 * time.Second)
// load and remove expired sessions
a = InitAuth(fn, users, 60, nil)
a = InitAuth(fn, users, 60, nil, nil)
assert.Equal(t, checkSessionNotFound, a.checkSession(sessStr))
a.Close()

44
internal/home/authhttp.go
View file

@ -4,8 +4,8 @@ import (
"encoding/hex"
"encoding/json"
"fmt"
"net"
"net/http"
"net/netip"
"path"
"strconv"
"strings"
@ -78,7 +78,7 @@ func (a *Auth) newCookie(req loginJSON, addr string) (c *http.Cookie, err error)
// a well-maintained third-party module.
//
// TODO(a.garipov): Support header Forwarded from RFC 7329.
func realIP(r *http.Request) (ip net.IP, err error) {
func realIP(r *http.Request) (ip netip.Addr, err error) {
proxyHeaders := []string{
httphdr.CFConnectingIP,
httphdr.TrueClientIP,
@ -87,8 +87,8 @@ func realIP(r *http.Request) (ip net.IP, err error) {
for _, h := range proxyHeaders {
v := r.Header.Get(h)
ip = net.ParseIP(v)
if ip != nil {
ip, err = netip.ParseAddr(v)
if err == nil {
return ip, nil
}
}
@ -96,20 +96,20 @@ func realIP(r *http.Request) (ip net.IP, err error) {
// If none of the above yielded any results, get the leftmost IP address
// from the X-Forwarded-For header.
s := r.Header.Get(httphdr.XForwardedFor)
ipStrs := strings.SplitN(s, ", ", 2)
ip = net.ParseIP(ipStrs[0])
if ip != nil {
ipStr, _, _ := strings.Cut(s, ",")
ip, err = netip.ParseAddr(ipStr)
if err == nil {
return ip, nil
}
// When everything else fails, just return the remote address as understood
// by the stdlib.
ipStr, err := netutil.SplitHost(r.RemoteAddr)
ipStr, err = netutil.SplitHost(r.RemoteAddr)
if err != nil {
return nil, fmt.Errorf("getting ip from client addr: %w", err)
return netip.Addr{}, fmt.Errorf("getting ip from client addr: %w", err)
}
return net.ParseIP(ipStr), nil
return netip.ParseAddr(ipStr)
}
// writeErrorWithIP is like [aghhttp.Error], but includes the remote IP address
@ -142,8 +142,6 @@ func handleLogin(w http.ResponseWriter, r *http.Request) {
// to security issues.
//
// See https://github.com/AdguardTeam/AdGuardHome/issues/2799.
//
// TODO(e.burkov): Use realIP when the issue will be fixed.
if remoteIP, err = netutil.SplitHost(r.RemoteAddr); err != nil {
writeErrorWithIP(
r,
@ -173,20 +171,24 @@ func handleLogin(w http.ResponseWriter, r *http.Request) {
}
}
cookie, err := Context.auth.newCookie(req, remoteIP)
if err != nil {
writeErrorWithIP(r, w, http.StatusForbidden, remoteIP, "%s", err)
return
}
// Use realIP here, since this IP address is only used for logging.
ip, err := realIP(r)
if err != nil {
log.Error("auth: getting real ip from request with remote ip %s: %s", remoteIP, err)
}
log.Info("auth: user %q successfully logged in from ip %v", req.Name, ip)
cookie, err := Context.auth.newCookie(req, remoteIP)
if err != nil {
logIP := remoteIP
if Context.auth.trustedProxies.Contains(ip.Unmap()) {
logIP = ip.String()
}
writeErrorWithIP(r, w, http.StatusForbidden, logIP, "%s", err)
return
}
log.Info("auth: user %q successfully logged in from ip %s", req.Name, ip)
http.SetCookie(w, cookie)

14
internal/home/authhttp_internal_test.go
View file

@ -1,8 +1,8 @@
package home
import (
"net"
"net/http"
"net/netip"
"net/textproto"
"net/url"
"path/filepath"
@ -39,7 +39,7 @@ func TestAuthHTTP(t *testing.T) {
users := []webUser{
{Name: "name", PasswordHash: "$2y$05$..vyzAECIhJPfaQiOK17IukcQnqEgKJHy0iETyYqxn3YXJl8yZuo2"},
}
Context.auth = InitAuth(fn, users, 60, nil)
Context.auth = InitAuth(fn, users, 60, nil, nil)
handlerCalled := false
handler := func(_ http.ResponseWriter, _ *http.Request) {
@ -125,13 +125,13 @@ func TestRealIP(t *testing.T) {
header http.Header
remoteAddr string
wantErrMsg string
wantIP net.IP
wantIP netip.Addr
}{{
name: "success_no_proxy",
header: nil,
remoteAddr: remoteAddr,
wantErrMsg: "",
wantIP: net.IPv4(1, 2, 3, 4),
wantIP: netip.MustParseAddr("1.2.3.4"),
}, {
name: "success_proxy",
header: http.Header{
@ -139,7 +139,7 @@ func TestRealIP(t *testing.T) {
},
remoteAddr: remoteAddr,
wantErrMsg: "",
wantIP: net.IPv4(1, 2, 3, 5),
wantIP: netip.MustParseAddr("1.2.3.5"),
}, {
name: "success_proxy_multiple",
header: http.Header{
@ -149,14 +149,14 @@ func TestRealIP(t *testing.T) {
},
remoteAddr: remoteAddr,
wantErrMsg: "",
wantIP: net.IPv4(1, 2, 3, 6),
wantIP: netip.MustParseAddr("1.2.3.6"),
}, {
name: "error_no_proxy",
header: nil,
remoteAddr: "1:::2",
wantErrMsg: `getting ip from client addr: address 1:::2: ` +
`too many colons in address`,
wantIP: nil,
wantIP: netip.Addr{},
}}
for _, tc := range testCases {

4
internal/home/home.go
View file

@ -674,8 +674,10 @@ func initUsers() (auth *Auth, err error) {
log.Info("authratelimiter is disabled")
}
trustedProxies := netutil.SliceSubnetSet(netutil.UnembedPrefixes(config.DNS.TrustedProxies))
sessionTTL := config.HTTPConfig.SessionTTL.Seconds()
auth = InitAuth(sessFilename, config.Users, uint32(sessionTTL), rateLimiter)
auth = InitAuth(sessFilename, config.Users, uint32(sessionTTL), rateLimiter, trustedProxies)
if auth == nil {
return nil, errors.Error("initializing auth module failed")
}