mirror of
https://github.com/dutchcoders/transfer.sh.git
synced 2025-01-15 21:20:19 +01:00
64 lines
1.6 KiB
Go
64 lines
1.6 KiB
Go
// Copyright 2016 Google Inc. All rights reserved.
|
|
//
|
|
// 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 martianurl
|
|
|
|
// MatchHost matches two URL hosts with support for wildcards.
|
|
func MatchHost(host, match string) bool {
|
|
// Short circuit if host is empty.
|
|
if host == "" {
|
|
return false
|
|
}
|
|
|
|
// Exact match, no need to loop.
|
|
if host == match {
|
|
return true
|
|
}
|
|
|
|
// Walk backward over the host.
|
|
hi := len(host) - 1
|
|
for mi := len(match) - 1; mi >= 0; mi-- {
|
|
// Found wildcard, skip to next period.
|
|
if match[mi] == '*' {
|
|
for hi > 0 && host[hi] != '.' {
|
|
hi--
|
|
}
|
|
|
|
// Wildcard was the leftmost part and we have walked the entire host,
|
|
// success.
|
|
if mi == 0 && hi == 0 {
|
|
return true
|
|
}
|
|
|
|
continue
|
|
}
|
|
|
|
if host[hi] != match[mi] {
|
|
return false
|
|
}
|
|
|
|
// We have walked the entire host, if we have not walked the entire matcher
|
|
// (mi != 0) that means the matcher has remaining characters to match and
|
|
// thus the host cannot match.
|
|
if hi == 0 {
|
|
return mi == 0
|
|
}
|
|
|
|
hi--
|
|
}
|
|
|
|
// We have walked the entire length of the matcher, but haven't finished
|
|
// walking the host thus they cannot match.
|
|
return false
|
|
}
|