1// Copyright (c) 2015-2021 MinIO, Inc.
2//
3// This file is part of MinIO Object Storage stack
4//
5// This program is free software: you can redistribute it and/or modify
6// it under the terms of the GNU Affero General Public License as published by
7// the Free Software Foundation, either version 3 of the License, or
8// (at your option) any later version.
9//
10// This program is distributed in the hope that it will be useful
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13// GNU Affero General Public License for more details.
14//
15// You should have received a copy of the GNU Affero General Public License
16// along with this program.  If not, see <http://www.gnu.org/licenses/>.
17
18package cmd
19
20import "strings"
21
22var validAPIs = []string{"S3v4", "S3v2"}
23
24const (
25	accessKeyMinLen = 3
26	secretKeyMinLen = 8
27)
28
29// isValidAccessKey - validate access key for right length.
30func isValidAccessKey(accessKey string) bool {
31	if accessKey == "" {
32		return true
33	}
34	return len(accessKey) >= accessKeyMinLen
35}
36
37// isValidSecretKey - validate secret key for right length.
38func isValidSecretKey(secretKey string) bool {
39	if secretKey == "" {
40		return true
41	}
42	return len(secretKey) >= secretKeyMinLen
43}
44
45// trimTrailingSeparator - Remove trailing separator.
46func trimTrailingSeparator(hostURL string) string {
47	separator := string(newClientURL(hostURL).Separator)
48	return strings.TrimSuffix(hostURL, separator)
49}
50
51// isValidHostURL - validate input host url.
52func isValidHostURL(hostURL string) (ok bool) {
53	if strings.TrimSpace(hostURL) != "" {
54		url := newClientURL(hostURL)
55		if url.Scheme == "https" || url.Scheme == "http" {
56			if url.Path == "/" {
57				ok = true
58			}
59		}
60	}
61	return ok
62}
63
64// isValidAPI - Validates if API signature string of supported type.
65func isValidAPI(api string) (ok bool) {
66	switch strings.ToLower(api) {
67	case "s3v2", "s3v4":
68		ok = true
69	}
70	return ok
71}
72
73// isValidLookup - validates if bucket lookup is of valid type
74func isValidLookup(lookup string) (ok bool) {
75	l := strings.ToLower(strings.TrimSpace(lookup))
76	for _, v := range []string{"dns", "path", "auto"} {
77		if l == v {
78			return true
79		}
80	}
81	return false
82}
83
84// isValidPath - validates the alias path config
85func isValidPath(path string) (ok bool) {
86	l := strings.ToLower(strings.TrimSpace(path))
87	for _, v := range []string{"on", "off", "auto"} {
88		if l == v {
89			return true
90		}
91	}
92	return false
93}
94