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109 lines
2.7 KiB
109 lines
2.7 KiB
/*
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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 donut
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import (
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"regexp"
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"strings"
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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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// 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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// IsValidBucket - 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 IsValidBucket(bucket string) bool {
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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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if match, _ := regexp.MatchString("\\.\\.", bucket); match == true {
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return false
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}
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// We don't support buckets with '.' in them
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match, _ := regexp.MatchString("^[a-zA-Z][a-zA-Z0-9\\-]+[a-zA-Z0-9]$", bucket)
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return match
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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 false
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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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// IsValidPrefix - verify prefix name is correct, an empty prefix is valid
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func IsValidPrefix(prefix string) bool {
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if strings.TrimSpace(prefix) == "" {
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return true
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}
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return IsValidObjectName(prefix)
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}
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