Files
minio/cmd/tagging-proxy-authz_test.go
T
Feng Ruohang ea37a7e8b0 fix(s3): enforce tag count and object lock permissions on proxy reads
Skip x-amz-tagging-count and X-Amz-Tagging in setObjectHeaders UserDefined iteration and proxyHeadToRepTarget metadata copies so opts.TaggingCount/opts.Tagging remains the sole gate without emitting duplicate headers. Make FilterObjectLockMetadata case-insensitive so canonical-case X-Amz-Object-Lock-* headers from peer HEAD responses are stripped when s3:GetObjectRetention or s3:GetObjectLegalHold is denied while preserved for authorized callers.

Signed-off-by: Feng Ruohang <rh@vonng.com>
2026-11-12 10:18:54 +08:00

327 lines
15 KiB
Go

// Copyright (c) 2026 Feng Ruohang
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"fmt"
"net/http"
"net/http/httptest"
"strings"
"sync/atomic"
"testing"
"github.com/minio/madmin-go/v3"
"github.com/minio/minio/internal/auth"
"github.com/minio/minio/internal/bucket/replication"
xhttp "github.com/minio/minio/internal/http"
)
func TestAPITaggingProxyAuthorization(t *testing.T) {
ExecObjectLayerAPITest(ExecObjectLayerAPITestArgs{t: t, objAPITest: func(obj ObjectLayer, backend, bucket string, router http.Handler, root auth.Credentials, t *testing.T) {
conditional := newDeleteAuthzPolicyUser(t, backend, bucket, fmt.Sprintf(`[
{"Effect":"Allow","Action":["s3:GetObjectTagging","s3:PutObjectTagging","s3:DeleteObjectTagging"],"Resource":["arn:aws:s3:::%s/*"]},
{"Effect":"Deny","Action":["s3:GetObjectTagging","s3:PutObjectTagging","s3:DeleteObjectTagging"],"Resource":["arn:aws:s3:::%s/*"],"Condition":{"StringEquals":{"s3:ExistingObjectTag/secret":"true"}}}
]`, bucket, bucket))
tagAllow := newDeleteAuthzPolicyUser(t, backend, bucket, fmt.Sprintf(`[
{"Effect":"Allow","Action":["s3:GetObjectTagging","s3:PutObjectTagging","s3:DeleteObjectTagging"],"Resource":["arn:aws:s3:::%s/*"],"Condition":{"StringEquals":{"s3:ExistingObjectTag/secret":"false"}}}
]`, bucket))
denied := newDeleteAuthzPolicyUser(t, backend, bucket, fmt.Sprintf(`[
{"Effect":"Deny","Action":["s3:*"],"Resource":["arn:aws:s3:::%s/*"]}
]`, bucket))
zero := iamAdminUser(t.Context(), t, globalIAMSys, "tagging-no-policy-"+mustGetUUID(), "")
versionID := mustGetUUID()
for _, method := range []string{http.MethodGet, http.MethodPut, http.MethodDelete} {
for _, tc := range []struct {
name string
tags []string
cred auth.Credentials
readStatus, writeStatus, wantStatus int
wantWrites int32
disabledFirst bool
firstReadStatus int
noReads bool
}{
{name: "deny-second-target", tags: []string{"false", "true"}, cred: conditional, wantStatus: http.StatusForbidden},
{name: "deny-first-target", tags: []string{"true", "false"}, cred: conditional, wantStatus: http.StatusForbidden},
{name: "all-authorized", tags: []string{"false", "false"}, cred: conditional, wantWrites: 2},
{name: "anonymous", tags: []string{"false"}, wantStatus: http.StatusForbidden, noReads: true},
{name: "invalid-credentials", tags: []string{"false"}, cred: auth.Credentials{AccessKey: root.AccessKey, SecretKey: "wrong-secret-key"}, wantStatus: http.StatusForbidden, noReads: true},
{name: "zero-permissions", tags: []string{"false"}, cred: zero, wantStatus: http.StatusForbidden, noReads: true},
{name: "zero-permissions-missing", tags: []string{"false"}, cred: zero, readStatus: http.StatusNotFound, wantStatus: http.StatusForbidden, noReads: true},
{name: "unconditional-deny", tags: []string{"false"}, cred: denied, wantStatus: http.StatusForbidden, noReads: true},
{name: "unreadable", tags: []string{"false"}, cred: root, readStatus: http.StatusServiceUnavailable, wantStatus: http.StatusServiceUnavailable},
{name: "missing-version", tags: []string{"false", "false"}, cred: root, readStatus: http.StatusNotFound, wantStatus: http.StatusNotFound},
{name: "tag-allow-missing-version", tags: []string{"false"}, cred: tagAllow, readStatus: http.StatusNotFound, wantStatus: http.StatusForbidden},
{name: "tag-allow-lagging-first", tags: []string{"false", "false"}, cred: tagAllow, firstReadStatus: http.StatusNotFound, wantWrites: 1},
{name: "tag-allow-lagging-second", tags: []string{"false", "false"}, cred: tagAllow, firstReadStatus: http.StatusOK, readStatus: http.StatusNotFound, wantWrites: 1},
{name: "tag-allow-present-untagged", tags: []string{"false", ""}, cred: tagAllow, wantStatus: http.StatusForbidden},
{name: "tag-allow-unreadable-first", tags: []string{"false", "false"}, cred: tagAllow, firstReadStatus: http.StatusServiceUnavailable, wantStatus: http.StatusServiceUnavailable},
{name: "tag-allow-unreadable-second", tags: []string{"false", "false"}, cred: tagAllow, firstReadStatus: http.StatusOK, readStatus: http.StatusServiceUnavailable, wantStatus: http.StatusServiceUnavailable},
{name: "disabled-target", tags: []string{"true", "false"}, cred: conditional, disabledFirst: true, wantWrites: 1},
{name: "no-available-target", tags: []string{"false"}, cred: tagAllow, disabledFirst: true, wantStatus: http.StatusServiceUnavailable, noReads: true},
{name: "skipped-target-cannot-mask-failure", tags: []string{"false", "false"}, cred: root, disabledFirst: true, writeStatus: http.StatusServiceUnavailable, wantStatus: http.StatusServiceUnavailable, wantWrites: 1},
} {
if method == http.MethodGet && tc.writeStatus != 0 {
continue // This case only exercises a remote mutation failure.
}
t.Run(backend+"/"+method+"/"+tc.name, func(t *testing.T) {
var reads, writes atomic.Int32
globalBucketTargetSys.Lock()
globalBucketTargetSys.targetsMap[bucket] = nil
globalBucketTargetSys.Unlock()
cfg := replication.Config{}
for i, value := range tc.tags {
readStatus := tc.readStatus
if i == 0 && tc.firstReadStatus != 0 {
readStatus = tc.firstReadStatus
}
target := newILMTestTarget(t)
registerILMTestTarget(t, obj, bucket, target, func(w http.ResponseWriter, r *http.Request) {
if r.URL.Query().Get("versionId") != versionID || !r.URL.Query().Has("tagging") || r.Header.Get(xhttp.MinIOSourceProxyRequest) != "true" {
t.Errorf("remote request lost addressed version or proxy marker: %s", r.URL)
}
status := tc.writeStatus
if r.Method == http.MethodGet {
reads.Add(1)
status = readStatus
} else {
writes.Add(1)
if readStatus == http.StatusNotFound {
t.Error("tagging write reached a missing replica")
}
}
w.Header().Set("Content-Type", "application/xml")
if status != 0 && status != http.StatusOK {
w.WriteHeader(status)
code := "ServiceUnavailable"
if status == http.StatusNotFound {
code = "NoSuchVersion"
}
fmt.Fprintf(w, "<Error><Code>%s</Code><Message>injected remote result</Message></Error>", code)
return
}
switch r.Method {
case http.MethodGet:
if value == "" {
fmt.Fprint(w, "<Tagging><TagSet></TagSet></Tagging>")
} else {
fmt.Fprintf(w, "<Tagging><TagSet><Tag><Key>secret</Key><Value>%s</Value></Tag></TagSet></Tagging>", value)
}
case http.MethodDelete:
w.WriteHeader(http.StatusNoContent)
}
})
globalBucketTargetSys.Lock()
globalBucketTargetSys.targetsMap[bucket][i].Credentials = &madmin.Credentials{AccessKey: "proxy-test", SecretKey: "proxy-test-secret"}
globalBucketTargetSys.arnRemotesMap[target.arn].Client.disableProxy = tc.disabledFirst && i == 0
globalBucketTargetSys.Unlock()
rule := configs[0].Rules[0]
rule.Priority = i + 1
rule.Destination = replication.Destination{ARN: target.arn, Bucket: target.bucket}
cfg.Rules = append(cfg.Rules, rule)
}
meta, err := globalBucketMetadataSys.Get(bucket)
if err != nil {
t.Fatal(err)
}
meta.replicationConfig = &cfg
globalBucketMetadataSys.Set(bucket, meta)
body := ""
if method == http.MethodPut {
body = "<Tagging><TagSet><Tag><Key>new</Key><Value>value</Value></Tag></TagSet></Tagging>"
}
path := "/" + bucket + "/remote-only?tagging&versionId=" + versionID
var req *http.Request
if tc.cred.AccessKey == "" {
req = httptest.NewRequest(method, path, strings.NewReader(body))
} else {
req, err = newTestSignedRequestV4(method, path, int64(len(body)), strings.NewReader(body), tc.cred.AccessKey, tc.cred.SecretKey, nil)
if err != nil {
t.Fatal(err)
}
}
rec := httptest.NewRecorder()
router.ServeHTTP(rec, req)
wantStatus := tc.wantStatus
if wantStatus == 0 {
wantStatus = http.StatusOK
if method == http.MethodDelete {
wantStatus = http.StatusNoContent
}
}
wantWrites := tc.wantWrites
if method == http.MethodGet {
wantWrites = 0
}
if rec.Code != wantStatus || writes.Load() != wantWrites {
t.Errorf("status=%d writes=%d, want status=%d writes=%d: %s", rec.Code, writes.Load(), wantStatus, wantWrites, rec.Body.String())
}
if tc.noReads && reads.Load() != 0 {
t.Errorf("unauthorized request reached %d remote reads", reads.Load())
}
})
}
}
}})
}
func headerValuesFold(h http.Header, name string) []string {
var out []string
for k, vals := range h {
if strings.EqualFold(k, name) {
out = append(out, vals...)
}
}
return out
}
func TestAPIProxyGetHeadTagCountAndLockHeaders(t *testing.T) {
ExecObjectLayerAPITest(ExecObjectLayerAPITestArgs{t: t, objAPITest: func(obj ObjectLayer, backend, bucket string, router http.Handler, root auth.Credentials, t *testing.T) {
explicitDenyTagAndLock := newDeleteAuthzPolicyUser(t, backend, bucket, fmt.Sprintf(`[
{"Effect":"Allow","Action":["s3:GetObject","s3:GetObjectVersion"],"Resource":["arn:aws:s3:::%s/*"]},
{"Effect":"Deny","Action":["s3:GetObjectTagging","s3:GetObjectVersionTagging","s3:GetObjectRetention","s3:GetObjectLegalHold"],"Resource":["arn:aws:s3:::%s/*"]}
]`, bucket, bucket))
readOnlyNoTagNoLock := newDeleteAuthzPolicyUser(t, backend, bucket, fmt.Sprintf(`[
{"Effect":"Allow","Action":["s3:GetObject","s3:GetObjectVersion"],"Resource":["arn:aws:s3:::%s/*"]}
]`, bucket))
globalBucketTargetSys.Lock()
globalBucketTargetSys.targetsMap[bucket] = nil
globalBucketTargetSys.Unlock()
const payload = "remote-active-active-body"
const etag = "d41d8cd98f00b204e9800998ecf8427e"
target := newILMTestTarget(t)
registerILMTestTarget(t, obj, bucket, target, func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("ETag", `"`+etag+`"`)
w.Header().Set("Content-Type", "text/plain")
w.Header().Set("Content-Length", fmt.Sprintf("%d", len(payload)))
w.Header().Set("Last-Modified", "Wed, 12 Nov 2026 00:00:00 GMT")
w.Header()[xhttp.AmzTagCount] = []string{"2"}
if strings.EqualFold(r.Header.Get(xhttp.AmzTagDirective), accessDirective) {
w.Header()[xhttp.AmzObjectTagging] = []string{"secret=alpha&tier=gold"}
}
w.Header().Set(xhttp.AmzObjectLockMode, "GOVERNANCE")
w.Header().Set(xhttp.AmzObjectLockRetainUntilDate, "2026-12-31T00:00:00Z")
w.Header().Set(xhttp.AmzObjectLockLegalHold, "ON")
w.WriteHeader(http.StatusOK)
if r.Method == http.MethodGet {
_, _ = w.Write([]byte(payload))
}
})
globalBucketTargetSys.Lock()
globalBucketTargetSys.targetsMap[bucket][0].Credentials = &madmin.Credentials{
AccessKey: "repl-svc",
SecretKey: "repl-svc-secret",
}
globalBucketTargetSys.Unlock()
rule := configs[0].Rules[0]
rule.Priority = 1
rule.Destination = replication.Destination{ARN: target.arn, Bucket: target.bucket}
cfg := replication.Config{Rules: []replication.Rule{rule}}
meta, err := globalBucketMetadataSys.Get(bucket)
if err != nil {
t.Fatal(err)
}
meta.replicationConfig = &cfg
globalBucketMetadataSys.Set(bucket, meta)
for _, method := range []string{http.MethodHead, http.MethodGet} {
for _, tc := range []struct {
name string
cred auth.Credentials
}{
{name: "explicit-deny-tag-and-lock", cred: explicitDenyTagAndLock},
{name: "implicit-no-tag-or-lock", cred: readOnlyNoTagNoLock},
} {
t.Run(backend+"/"+method+"/"+tc.name, func(t *testing.T) {
req, err := newTestSignedRequestV4(method, "/"+bucket+"/remote-only.txt", 0, nil, tc.cred.AccessKey, tc.cred.SecretKey, map[string]string{xhttp.AmzTagDirective: accessDirective})
if err != nil {
t.Fatal(err)
}
rec := httptest.NewRecorder()
router.ServeHTTP(rec, req)
if rec.Code != http.StatusOK {
t.Fatalf("status=%d, want 200: %s", rec.Code, rec.Body.String())
}
wire := rec.Result().Header
for _, hdr := range []string{
"X-Amz-Tagging-Count",
"X-Amz-Tagging",
"X-Amz-Object-Lock-Mode",
"X-Amz-Object-Lock-Retain-Until-Date",
"X-Amz-Object-Lock-Legal-Hold",
} {
if got := headerValuesFold(wire, hdr); len(got) != 0 {
t.Errorf("unauthorized caller leaked %s=%v (raw=%v)", hdr, got, rec.Header())
}
}
})
}
t.Run(backend+"/"+method+"/authorized-single-tag-count-and-lock-preserved", func(t *testing.T) {
req, err := newTestSignedRequestV4(method, "/"+bucket+"/remote-only.txt", 0, nil, root.AccessKey, root.SecretKey, nil)
if err != nil {
t.Fatal(err)
}
rec := httptest.NewRecorder()
router.ServeHTTP(rec, req)
if rec.Code != http.StatusOK {
t.Fatalf("status=%d, want 200: %s", rec.Code, rec.Body.String())
}
wire := rec.Result().Header
if got := headerValuesFold(wire, "X-Amz-Tagging-Count"); len(got) != 1 || got[0] != "2" {
t.Errorf("authorized X-Amz-Tagging-Count=%v, want single [2] (raw=%v)", got, rec.Header())
}
if got := headerValuesFold(wire, "X-Amz-Tagging"); len(got) != 0 {
t.Errorf("unexpected X-Amz-Tagging without ACCESS directive: %v", got)
}
if got := wire.Get("X-Amz-Object-Lock-Mode"); got != "GOVERNANCE" {
t.Errorf("authorized X-Amz-Object-Lock-Mode=%q, want GOVERNANCE", got)
}
if got := wire.Get("X-Amz-Object-Lock-Retain-Until-Date"); got != "2026-12-31T00:00:00Z" {
t.Errorf("authorized X-Amz-Object-Lock-Retain-Until-Date=%q, want 2026-12-31T00:00:00Z", got)
}
if got := wire.Get("X-Amz-Object-Lock-Legal-Hold"); got != "ON" {
t.Errorf("authorized X-Amz-Object-Lock-Legal-Hold=%q, want ON", got)
}
reqAccess, err := newTestSignedRequestV4(method, "/"+bucket+"/remote-only.txt", 0, nil, root.AccessKey, root.SecretKey, map[string]string{xhttp.AmzTagDirective: accessDirective})
if err != nil {
t.Fatal(err)
}
recAccess := httptest.NewRecorder()
router.ServeHTTP(recAccess, reqAccess)
if recAccess.Code != http.StatusOK {
t.Fatalf("ACCESS status=%d, want 200: %s", recAccess.Code, recAccess.Body.String())
}
wireAccess := recAccess.Result().Header
if got := headerValuesFold(wireAccess, "X-Amz-Tagging-Count"); len(got) != 1 || got[0] != "2" {
t.Errorf("ACCESS X-Amz-Tagging-Count=%v, want single [2]", got)
}
if got := headerValuesFold(wireAccess, "X-Amz-Tagging"); len(got) != 1 || got[0] != "secret=alpha&tier=gold" {
t.Errorf("ACCESS X-Amz-Tagging=%v, want [secret=alpha&tier=gold]", got)
}
})
}
}})
}