You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
108 lines
2.1 KiB
108 lines
2.1 KiB
![]()
5 years ago
|
/*
|
||
|
* Minio Cloud Storage, (C) 2019 Minio, Inc.
|
||
|
*
|
||
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
* you may not use this file except in compliance with the License.
|
||
|
* You may obtain a copy of the License at
|
||
|
*
|
||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
*
|
||
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
* See the License for the specific language governing permissions and
|
||
|
* limitations under the License.
|
||
|
*/
|
||
|
|
||
|
package cmd
|
||
|
|
||
|
import (
|
||
|
"strings"
|
||
|
)
|
||
|
|
||
|
func shouldEscape(c byte) bool {
|
||
|
if 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z' || '0' <= c && c <= '9' {
|
||
|
return false
|
||
|
}
|
||
|
|
||
|
switch c {
|
||
|
case '-', '_', '.', '/', '*':
|
||
|
return false
|
||
|
}
|
||
|
return true
|
||
|
}
|
||
|
|
||
|
// s3URLEncode is based on Golang's url.QueryEscape() code,
|
||
|
// while considering some S3 exceptions:
|
||
|
// - Avoid encoding '/' and '*'
|
||
|
// - Force encoding of '~'
|
||
|
func s3URLEncode(s string) string {
|
||
|
spaceCount, hexCount := 0, 0
|
||
|
for i := 0; i < len(s); i++ {
|
||
|
c := s[i]
|
||
|
if shouldEscape(c) {
|
||
|
if c == ' ' {
|
||
|
spaceCount++
|
||
|
} else {
|
||
|
hexCount++
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if spaceCount == 0 && hexCount == 0 {
|
||
|
return s
|
||
|
}
|
||
|
|
||
|
var buf [64]byte
|
||
|
var t []byte
|
||
|
|
||
|
required := len(s) + 2*hexCount
|
||
|
if required <= len(buf) {
|
||
|
t = buf[:required]
|
||
|
} else {
|
||
|
t = make([]byte, required)
|
||
|
}
|
||
|
|
||
|
if hexCount == 0 {
|
||
|
copy(t, s)
|
||
|
for i := 0; i < len(s); i++ {
|
||
|
if s[i] == ' ' {
|
||
|
t[i] = '+'
|
||
|
}
|
||
|
}
|
||
|
return string(t)
|
||
|
}
|
||
|
|
||
|
j := 0
|
||
|
for i := 0; i < len(s); i++ {
|
||
|
switch c := s[i]; {
|
||
|
case c == ' ':
|
||
|
t[j] = '+'
|
||
|
j++
|
||
|
case shouldEscape(c):
|
||
|
t[j] = '%'
|
||
|
t[j+1] = "0123456789ABCDEF"[c>>4]
|
||
|
t[j+2] = "0123456789ABCDEF"[c&15]
|
||
|
j += 3
|
||
|
default:
|
||
|
t[j] = s[i]
|
||
|
j++
|
||
|
}
|
||
|
}
|
||
|
return string(t)
|
||
|
}
|
||
|
|
||
|
// s3EncodeName encodes string in response when encodingType is specified in AWS S3 requests.
|
||
|
func s3EncodeName(name string, encodingType string) (result string) {
|
||
|
// Quick path to exit
|
||
|
if encodingType == "" {
|
||
|
return name
|
||
|
}
|
||
|
encodingType = strings.ToLower(encodingType)
|
||
|
switch encodingType {
|
||
|
case "url":
|
||
|
return s3URLEncode(name)
|
||
|
}
|
||
|
return name
|
||
|
}
|