You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
1.5 KiB
Go
61 lines
1.5 KiB
Go
// Copyright (c) 2015 Dalton Hubble. All rights reserved.
|
|
// Copyrights licensed under the MIT License.
|
|
|
|
package oauth1
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"strings"
|
|
)
|
|
|
|
// encodeParameterString encodes collected OAuth parameters
|
|
// into a parameter string as defined in RFC 5894 3.4.1.3.2.
|
|
func encodeParameterString(params map[string]string) string {
|
|
return strings.Join(sortParameters(
|
|
encodeParameters(params), "%s=%s"), "&")
|
|
}
|
|
|
|
// encodeParameters percent encodes parameter keys and
|
|
// values according to RFC5849 3.6 and RFC3986 2.1 and
|
|
// returns a new map.
|
|
func encodeParameters(params map[string]string) map[string]string {
|
|
encoded := map[string]string{}
|
|
for key, value := range params {
|
|
encoded[percentEncode(key)] = percentEncode(value)
|
|
}
|
|
return encoded
|
|
}
|
|
|
|
// percentEncode percent encodes a string according to
|
|
// RFC 3986 2.1.
|
|
func percentEncode(input string) string {
|
|
var buf bytes.Buffer
|
|
for _, b := range []byte(input) {
|
|
// if in unreserved set
|
|
if shouldEscape(b) {
|
|
buf.Write([]byte(fmt.Sprintf("%%%02X", b)))
|
|
} else {
|
|
// do not escape, write byte as-is
|
|
buf.WriteByte(b)
|
|
}
|
|
}
|
|
return buf.String()
|
|
}
|
|
|
|
// shouldEscape returns false if the byte is an unreserved
|
|
// character that should not be escaped and true otherwise,
|
|
// according to RFC 3986 2.1.
|
|
func shouldEscape(c byte) bool {
|
|
// RFC3986 2.3 unreserved characters
|
|
if 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z' || '0' <= c && c <= '9' {
|
|
return false
|
|
}
|
|
switch c {
|
|
case '-', '.', '_', '~':
|
|
return false
|
|
}
|
|
// all other bytes must be escaped
|
|
return true
|
|
}
|