OP#792 initial commit after fork

cmd/bucket-versioning-handler.go

@@ -0,0 +1,162 @@
+// Copyright (c) 2015-2021 MinIO, Inc.
+//
+// This file is part of MinIO Object Storage stack
+//
+// 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 (
+	"encoding/base64"
+	"encoding/xml"
+	"io"
+	"net/http"
+
+	humanize "github.com/dustin/go-humanize"
+	"github.com/minio/madmin-go/v3"
+	"github.com/minio/minio/internal/bucket/versioning"
+	"github.com/minio/minio/internal/logger"
+	"github.com/minio/mux"
+	"github.com/minio/pkg/v3/policy"
+)
+
+const (
+	bucketVersioningConfig = "versioning.xml"
+
+	// Maximum size of bucket versioning configuration payload sent to the PutBucketVersioningHandler.
+	maxBucketVersioningConfigSize = 1 * humanize.MiByte
+)
+
+// PutBucketVersioningHandler - PUT Bucket Versioning.
+// ----------
+func (api objectAPIHandlers) PutBucketVersioningHandler(w http.ResponseWriter, r *http.Request) {
+	ctx := newContext(r, w, "PutBucketVersioning")
+
+	defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
+
+	vars := mux.Vars(r)
+	bucket := vars["bucket"]
+
+	objectAPI := api.ObjectAPI()
+	if objectAPI == nil {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
+		return
+	}
+
+	if s3Error := checkRequestAuthType(ctx, r, policy.PutBucketVersioningAction, bucket, ""); s3Error != ErrNone {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
+		return
+	}
+
+	v, err := versioning.ParseConfig(io.LimitReader(r.Body, maxBucketVersioningConfigSize))
+	if err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
+		return
+	}
+
+	if globalSiteReplicationSys.isEnabled() && !v.Enabled() {
+		writeErrorResponse(ctx, w, APIError{
+			Code:           "InvalidBucketState",
+			Description:    "Cluster replication is enabled on this site, versioning cannot be suspended on bucket.",
+			HTTPStatusCode: http.StatusBadRequest,
+		}, r.URL)
+		return
+	}
+
+	if rcfg, _ := globalBucketObjectLockSys.Get(bucket); rcfg.LockEnabled && (v.Suspended() || v.PrefixesExcluded()) {
+		writeErrorResponse(ctx, w, APIError{
+			Code:           "InvalidBucketState",
+			Description:    "An Object Lock configuration is present on this bucket, versioning cannot be suspended.",
+			HTTPStatusCode: http.StatusBadRequest,
+		}, r.URL)
+		return
+	}
+	if rc, _ := getReplicationConfig(ctx, bucket); rc != nil && v.Suspended() {
+		writeErrorResponse(ctx, w, APIError{
+			Code:           "InvalidBucketState",
+			Description:    "A replication configuration is present on this bucket, bucket wide versioning cannot be suspended.",
+			HTTPStatusCode: http.StatusBadRequest,
+		}, r.URL)
+		return
+	}
+
+	configData, err := xml.Marshal(v)
+	if err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
+		return
+	}
+
+	updatedAt, err := globalBucketMetadataSys.Update(ctx, bucket, bucketVersioningConfig, configData)
+	if err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
+		return
+	}
+
+	// Call site replication hook.
+	//
+	// We encode the xml bytes as base64 to ensure there are no encoding
+	// errors.
+	cfgStr := base64.StdEncoding.EncodeToString(configData)
+	replLogIf(ctx, globalSiteReplicationSys.BucketMetaHook(ctx, madmin.SRBucketMeta{
+		Type:       madmin.SRBucketMetaTypeVersionConfig,
+		Bucket:     bucket,
+		Versioning: &cfgStr,
+		UpdatedAt:  updatedAt,
+	}))
+
+	writeSuccessResponseHeadersOnly(w)
+}
+
+// GetBucketVersioningHandler - GET Bucket Versioning.
+// ----------
+func (api objectAPIHandlers) GetBucketVersioningHandler(w http.ResponseWriter, r *http.Request) {
+	ctx := newContext(r, w, "GetBucketVersioning")
+
+	defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
+
+	vars := mux.Vars(r)
+	bucket := vars["bucket"]
+
+	objectAPI := api.ObjectAPI()
+	if objectAPI == nil {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
+		return
+	}
+
+	if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketVersioningAction, bucket, ""); s3Error != ErrNone {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
+		return
+	}
+
+	// Check if bucket exists.
+	if _, err := objectAPI.GetBucketInfo(ctx, bucket, BucketOptions{}); err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
+		return
+	}
+
+	config, err := globalBucketVersioningSys.Get(bucket)
+	if err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
+		return
+	}
+
+	configData, err := xml.Marshal(config)
+	if err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
+		return
+	}
+
+	// Write bucket versioning configuration to client
+	writeSuccessResponseXML(w, configData)
+}