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mc/aliasconfig.go
Harshavardhana e69b7253df Fix alias bug
2015-09-05 16:34:04 -07:00

56 lines
1.8 KiB
Go

/*
* Minio Client (C) 2015 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 main
import (
"os"
"regexp"
"strings"
"unicode/utf8"
)
// validAliasName regex validation.
var validAliasName = regexp.MustCompile("^[a-zA-Z][a-zA-Z0-9-]+$")
// Check if it is an aliased URL.
func isValidAliasName(aliasName string) bool {
return validAliasName.MatchString(aliasName)
}
// getAliasURL expands aliased (name/path) to full URL, used by url-parser.
func getAliasURL(aliasedURL string, aliases map[string]string) string {
for aliasName, aliasValue := range aliases {
if strings.HasPrefix(aliasedURL, aliasName) {
// Match found. Expand it.
splits := strings.SplitN(aliasedURL, aliasName, 2)
if len(splits) == 1 {
return aliasedURL // Not an aliased URL. Return as is.
}
if len(splits[0]) == 0 && len(splits[1]) == 0 {
return aliasValue // exact match.
}
_, sepLen := utf8.DecodeRuneInString(splits[1])
if sepLen == 1 && !os.IsPathSeparator(splits[1][0]) && splits[1] != recursiveSeparator {
return aliasedURL // Do not expand for whole strings with alias prefix.
}
// Matched, but path needs to be joined.
return urlJoinPath(aliasValue, splits[1])
}
}
return aliasedURL // No matching alias found. Return as is.
}