196 lines
4.8 KiB
Go
196 lines
4.8 KiB
Go
/*
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* Minimalist Object Storage, (C) 2015 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package fs
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import (
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"os"
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"regexp"
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"strings"
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"time"
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"unicode/utf8"
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)
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// BucketACL - bucket level access control
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type BucketACL string
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// different types of ACL's currently supported for buckets
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const (
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BucketPrivate = BucketACL("private")
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BucketPublicRead = BucketACL("public-read")
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BucketPublicReadWrite = BucketACL("public-read-write")
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)
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func (b BucketACL) String() string {
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return string(b)
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}
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// IsPrivate - is acl Private
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func (b BucketACL) IsPrivate() bool {
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return b == BucketACL("private")
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}
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// IsPublicRead - is acl PublicRead
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func (b BucketACL) IsPublicRead() bool {
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return b == BucketACL("public-read")
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}
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// IsPublicReadWrite - is acl PublicReadWrite
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func (b BucketACL) IsPublicReadWrite() bool {
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return b == BucketACL("public-read-write")
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}
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// BucketMetadata - name and create date
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type BucketMetadata struct {
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Name string
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Created time.Time
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ACL BucketACL
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}
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// ObjectMetadata - object key and its relevant metadata
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type ObjectMetadata struct {
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Bucket string
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Object string
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ContentType string
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Created time.Time
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Mode os.FileMode
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Md5 string
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Size int64
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}
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// PartMetadata - various types of individual part resources
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type PartMetadata struct {
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PartNumber int
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LastModified time.Time
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ETag string
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Size int64
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}
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// ObjectResourcesMetadata - various types of object resources
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type ObjectResourcesMetadata struct {
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Bucket string
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Object string
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UploadID string
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StorageClass string
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PartNumberMarker int
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NextPartNumberMarker int
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MaxParts int
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IsTruncated bool
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Part []*PartMetadata
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EncodingType string
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}
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// UploadMetadata container capturing metadata on in progress multipart upload in a given bucket
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type UploadMetadata struct {
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Object string
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UploadID string
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StorageClass string
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Initiated time.Time
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}
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// BucketMultipartResourcesMetadata - various types of bucket resources for inprogress multipart uploads
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type BucketMultipartResourcesMetadata struct {
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KeyMarker string
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UploadIDMarker string
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NextKeyMarker string
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NextUploadIDMarker string
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EncodingType string
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MaxUploads int
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IsTruncated bool
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Upload []*UploadMetadata
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Prefix string
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Delimiter string
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CommonPrefixes []string
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}
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// ListObjectsResult - container for list object request results.
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type ListObjectsResult struct {
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IsTruncated bool
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NextMarker string
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Objects []ObjectMetadata
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Prefixes []string
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}
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// CompletePart - completed part container
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type CompletePart struct {
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PartNumber int
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ETag string
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}
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// completedParts is a sortable interface for Part slice
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type completedParts []CompletePart
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func (a completedParts) Len() int { return len(a) }
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func (a completedParts) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
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func (a completedParts) Less(i, j int) bool { return a[i].PartNumber < a[j].PartNumber }
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// CompleteMultipartUpload container for completing multipart upload
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type CompleteMultipartUpload struct {
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Part []CompletePart
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}
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// IsValidBucketACL - is provided acl string supported
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func IsValidBucketACL(acl string) bool {
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switch acl {
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case "private":
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fallthrough
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case "public-read":
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fallthrough
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case "public-read-write":
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return true
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case "":
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// by default its "private"
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return true
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default:
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return false
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}
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}
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// validBucket regexp.
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var validBucket = regexp.MustCompile(`^[a-z0-9][a-z0-9\.\-]{1,61}[a-z0-9]$`)
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// IsValidBucketName - verify bucket name in accordance with
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// - http://docs.aws.amazon.com/AmazonS3/latest/dev/UsingBucket.html
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func IsValidBucketName(bucket string) bool {
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if strings.TrimSpace(bucket) == "" {
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return false
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}
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if len(bucket) < 3 || len(bucket) > 63 {
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return false
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}
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if bucket[0] == '.' || bucket[len(bucket)-1] == '.' {
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return false
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}
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return validBucket.MatchString(bucket)
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}
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// IsValidObjectName - verify object name in accordance with
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// - http://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html
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func IsValidObjectName(object string) bool {
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if strings.TrimSpace(object) == "" {
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return true
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}
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if len(object) > 1024 || len(object) == 0 {
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return false
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}
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if !utf8.ValidString(object) {
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return false
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}
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return true
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}
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