mirror of
https://github.com/minio/minio.git
synced 2025-11-07 21:02:58 -05:00
rename all remaining packages to internal/ (#12418)
This is to ensure that there are no projects that try to import `minio/minio/pkg` into their own repo. Any such common packages should go to `https://github.com/minio/pkg`
This commit is contained in:
Harshavardhana
GitHub
259
internal/kms/context.go
Normal file
259
internal/kms/context.go
Normal file
@@ -0,0 +1,259 @@
|
||||
// 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 kms
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"sort"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
// Context is a set of key-value pairs that
|
||||
// are associated with a generate data encryption
|
||||
// key (DEK).
|
||||
//
|
||||
// A KMS implementation may bind the context to the
|
||||
// generated DEK such that the same context must be
|
||||
// provided when decrypting an encrypted DEK.
|
||||
type Context map[string]string
|
||||
|
||||
// MarshalText returns a canonical text representation of
|
||||
// the Context.
|
||||
|
||||
// MarshalText sorts the context keys and writes the sorted
|
||||
// key-value pairs as canonical JSON object. The sort order
|
||||
// is based on the un-escaped keys. It never returns an error.
|
||||
func (c Context) MarshalText() ([]byte, error) {
|
||||
if len(c) == 0 {
|
||||
return []byte{'{', '}'}, nil
|
||||
}
|
||||
|
||||
// Pre-allocate a buffer - 128 bytes is an arbitrary
|
||||
// heuristic value that seems like a good starting size.
|
||||
var b = bytes.NewBuffer(make([]byte, 0, 128))
|
||||
if len(c) == 1 {
|
||||
for k, v := range c {
|
||||
b.WriteString(`{"`)
|
||||
escapeStringJSON(b, k)
|
||||
b.WriteString(`":"`)
|
||||
escapeStringJSON(b, v)
|
||||
b.WriteString(`"}`)
|
||||
}
|
||||
return b.Bytes(), nil
|
||||
}
|
||||
|
||||
sortedKeys := make([]string, 0, len(c))
|
||||
for k := range c {
|
||||
sortedKeys = append(sortedKeys, k)
|
||||
}
|
||||
sort.Strings(sortedKeys)
|
||||
|
||||
b.WriteByte('{')
|
||||
for i, k := range sortedKeys {
|
||||
b.WriteByte('"')
|
||||
escapeStringJSON(b, k)
|
||||
b.WriteString(`":"`)
|
||||
escapeStringJSON(b, c[k])
|
||||
b.WriteByte('"')
|
||||
if i < len(sortedKeys)-1 {
|
||||
b.WriteByte(',')
|
||||
}
|
||||
}
|
||||
b.WriteByte('}')
|
||||
return b.Bytes(), nil
|
||||
}
|
||||
|
||||
// Adapted from Go stdlib.
|
||||
|
||||
var hexTable = "0123456789abcdef"
|
||||
|
||||
// escapeStringJSON will escape a string for JSON and write it to dst.
|
||||
func escapeStringJSON(dst *bytes.Buffer, s string) {
|
||||
start := 0
|
||||
for i := 0; i < len(s); {
|
||||
if b := s[i]; b < utf8.RuneSelf {
|
||||
if htmlSafeSet[b] {
|
||||
i++
|
||||
continue
|
||||
}
|
||||
if start < i {
|
||||
dst.WriteString(s[start:i])
|
||||
}
|
||||
dst.WriteByte('\\')
|
||||
switch b {
|
||||
case '\\', '"':
|
||||
dst.WriteByte(b)
|
||||
case '\n':
|
||||
dst.WriteByte('n')
|
||||
case '\r':
|
||||
dst.WriteByte('r')
|
||||
case '\t':
|
||||
dst.WriteByte('t')
|
||||
default:
|
||||
// This encodes bytes < 0x20 except for \t, \n and \r.
|
||||
// If escapeHTML is set, it also escapes <, >, and &
|
||||
// because they can lead to security holes when
|
||||
// user-controlled strings are rendered into JSON
|
||||
// and served to some browsers.
|
||||
dst.WriteString(`u00`)
|
||||
dst.WriteByte(hexTable[b>>4])
|
||||
dst.WriteByte(hexTable[b&0xF])
|
||||
}
|
||||
i++
|
||||
start = i
|
||||
continue
|
||||
}
|
||||
c, size := utf8.DecodeRuneInString(s[i:])
|
||||
if c == utf8.RuneError && size == 1 {
|
||||
if start < i {
|
||||
dst.WriteString(s[start:i])
|
||||
}
|
||||
dst.WriteString(`\ufffd`)
|
||||
i += size
|
||||
start = i
|
||||
continue
|
||||
}
|
||||
// U+2028 is LINE SEPARATOR.
|
||||
// U+2029 is PARAGRAPH SEPARATOR.
|
||||
// They are both technically valid characters in JSON strings,
|
||||
// but don't work in JSONP, which has to be evaluated as JavaScript,
|
||||
// and can lead to security holes there. It is valid JSON to
|
||||
// escape them, so we do so unconditionally.
|
||||
// See http://timelessrepo.com/json-isnt-a-javascript-subset for discussion.
|
||||
if c == '\u2028' || c == '\u2029' {
|
||||
if start < i {
|
||||
dst.WriteString(s[start:i])
|
||||
}
|
||||
dst.WriteString(`\u202`)
|
||||
dst.WriteByte(hexTable[c&0xF])
|
||||
i += size
|
||||
start = i
|
||||
continue
|
||||
}
|
||||
i += size
|
||||
}
|
||||
if start < len(s) {
|
||||
dst.WriteString(s[start:])
|
||||
}
|
||||
}
|
||||
|
||||
// htmlSafeSet holds the value true if the ASCII character with the given
|
||||
// array position can be safely represented inside a JSON string, embedded
|
||||
// inside of HTML <script> tags, without any additional escaping.
|
||||
//
|
||||
// All values are true except for the ASCII control characters (0-31), the
|
||||
// double quote ("), the backslash character ("\"), HTML opening and closing
|
||||
// tags ("<" and ">"), and the ampersand ("&").
|
||||
var htmlSafeSet = [utf8.RuneSelf]bool{
|
||||
' ': true,
|
||||
'!': true,
|
||||
'"': false,
|
||||
'#': true,
|
||||
'$': true,
|
||||
'%': true,
|
||||
'&': false,
|
||||
'\'': true,
|
||||
'(': true,
|
||||
')': true,
|
||||
'*': true,
|
||||
'+': true,
|
||||
',': true,
|
||||
'-': true,
|
||||
'.': true,
|
||||
'/': true,
|
||||
'0': true,
|
||||
'1': true,
|
||||
'2': true,
|
||||
'3': true,
|
||||
'4': true,
|
||||
'5': true,
|
||||
'6': true,
|
||||
'7': true,
|
||||
'8': true,
|
||||
'9': true,
|
||||
':': true,
|
||||
';': true,
|
||||
'<': false,
|
||||
'=': true,
|
||||
'>': false,
|
||||
'?': true,
|
||||
'@': true,
|
||||
'A': true,
|
||||
'B': true,
|
||||
'C': true,
|
||||
'D': true,
|
||||
'E': true,
|
||||
'F': true,
|
||||
'G': true,
|
||||
'H': true,
|
||||
'I': true,
|
||||
'J': true,
|
||||
'K': true,
|
||||
'L': true,
|
||||
'M': true,
|
||||
'N': true,
|
||||
'O': true,
|
||||
'P': true,
|
||||
'Q': true,
|
||||
'R': true,
|
||||
'S': true,
|
||||
'T': true,
|
||||
'U': true,
|
||||
'V': true,
|
||||
'W': true,
|
||||
'X': true,
|
||||
'Y': true,
|
||||
'Z': true,
|
||||
'[': true,
|
||||
'\\': false,
|
||||
']': true,
|
||||
'^': true,
|
||||
'_': true,
|
||||
'`': true,
|
||||
'a': true,
|
||||
'b': true,
|
||||
'c': true,
|
||||
'd': true,
|
||||
'e': true,
|
||||
'f': true,
|
||||
'g': true,
|
||||
'h': true,
|
||||
'i': true,
|
||||
'j': true,
|
||||
'k': true,
|
||||
'l': true,
|
||||
'm': true,
|
||||
'n': true,
|
||||
'o': true,
|
||||
'p': true,
|
||||
'q': true,
|
||||
'r': true,
|
||||
's': true,
|
||||
't': true,
|
||||
'u': true,
|
||||
'v': true,
|
||||
'w': true,
|
||||
'x': true,
|
||||
'y': true,
|
||||
'z': true,
|
||||
'{': true,
|
||||
'|': true,
|
||||
'}': true,
|
||||
'~': true,
|
||||
'\u007f': true,
|
||||
}
|
||||
Reference in New Issue
Block a user