/
utils.go
368 lines (333 loc) · 10.4 KB
/
utils.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
// Copyright (c) 2015-2022 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 cmd
import (
"bytes"
"crypto/tls"
"errors"
"fmt"
"math"
"math/rand"
"net"
"net/http"
"os"
"path/filepath"
"regexp"
"strconv"
"strings"
"time"
"github.com/mattn/go-ieproxy"
"github.com/minio/madmin-go/v3"
"github.com/minio/minio-go/v7"
jwtgo "github.com/golang-jwt/jwt/v4"
"github.com/minio/mc/pkg/probe"
"github.com/minio/pkg/v2/console"
)
func isErrIgnored(err *probe.Error) (ignored bool) {
// For all non critical errors we can continue for the remaining files.
switch e := err.ToGoError().(type) {
// Handle these specifically for filesystem related errors.
case BrokenSymlink, TooManyLevelsSymlink, PathNotFound:
ignored = true
// Handle these specifically for object storage related errors.
case BucketNameEmpty, ObjectMissing, ObjectAlreadyExists:
ignored = true
case ObjectAlreadyExistsAsDirectory, BucketDoesNotExist, BucketInvalid:
ignored = true
case minio.ErrorResponse:
ignored = strings.Contains(e.Error(), "The specified key does not exist")
default:
ignored = false
}
return ignored
}
const (
letterBytes = "abcdefghijklmnopqrstuvwxyz01234569"
letterIdxBits = 6 // 6 bits to represent a letter index
letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
letterIdxMax = 63 / letterIdxBits // # of letter indices fitting in 63 bits
)
// UTCNow - returns current UTC time.
func UTCNow() time.Time {
return time.Now().UTC()
}
func max(a, b int) int {
if a > b {
return a
}
return b
}
// randString generates random names and prepends them with a known prefix.
func randString(n int, src rand.Source, prefix string) string {
if n == 0 {
return prefix
}
b := make([]byte, n)
// A rand.Int63() generates 63 random bits, enough for letterIdxMax letters!
for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
if remain == 0 {
cache, remain = src.Int63(), letterIdxMax
}
if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
b[i] = letterBytes[idx]
i--
}
cache >>= letterIdxBits
remain--
}
x := n / 2
if x == 0 {
x = 1
}
return prefix + string(b[0:x])
}
// printTLSCertInfo prints some fields of the certificates received from the server.
// Fields will be inspected by the user, so they must be conscise and useful
func printTLSCertInfo(t *tls.ConnectionState) {
if globalDebug {
for _, cert := range t.PeerCertificates {
console.Debugln("TLS Certificate found: ")
if len(cert.Issuer.Country) > 0 {
console.Debugln(" >> Country: " + cert.Issuer.Country[0])
}
if len(cert.Issuer.Organization) > 0 {
console.Debugln(" >> Organization: " + cert.Issuer.Organization[0])
}
console.Debugln(" >> Expires: " + cert.NotAfter.String())
}
}
}
// splitStr splits a string into n parts, empty strings are added
// if we are not able to reach n elements
func splitStr(path, sep string, n int) []string {
splits := strings.SplitN(path, sep, n)
// Add empty strings if we found elements less than nr
for i := n - len(splits); i > 0; i-- {
splits = append(splits, "")
}
return splits
}
// NewS3Config simply creates a new Config struct using the passed
// parameters.
func NewS3Config(alias, urlStr string, aliasCfg *aliasConfigV10) *Config {
// We have a valid alias and hostConfig. We populate the
// credentials from the match found in the config file.
s3Config := new(Config)
s3Config.AppName = filepath.Base(os.Args[0])
s3Config.AppVersion = ReleaseTag
s3Config.Debug = globalDebug
s3Config.Insecure = globalInsecure
s3Config.ConnReadDeadline = globalConnReadDeadline
s3Config.ConnWriteDeadline = globalConnWriteDeadline
s3Config.UploadLimit = int64(globalLimitUpload)
s3Config.DownloadLimit = int64(globalLimitDownload)
s3Config.HostURL = urlStr
s3Config.Alias = alias
if aliasCfg != nil {
s3Config.AccessKey = aliasCfg.AccessKey
s3Config.SecretKey = aliasCfg.SecretKey
s3Config.SessionToken = aliasCfg.SessionToken
s3Config.Signature = aliasCfg.API
s3Config.Lookup = getLookupType(aliasCfg.Path)
}
return s3Config
}
// lineTrunc - truncates a string to the given maximum length by
// adding ellipsis in the middle
func lineTrunc(content string, maxLen int) string {
runes := []rune(content)
rlen := len(runes)
if rlen <= maxLen {
return content
}
halfLen := maxLen / 2
fstPart := string(runes[0:halfLen])
sndPart := string(runes[rlen-halfLen:])
return fstPart + "…" + sndPart
}
// isOlder returns true if the passed object is older than olderRef
func isOlder(ti time.Time, olderRef string) bool {
if olderRef == "" {
return false
}
objectAge := time.Since(ti)
olderThan, e := ParseDuration(olderRef)
fatalIf(probe.NewError(e), "Unable to parse olderThan=`"+olderRef+"`.")
return objectAge < time.Duration(olderThan)
}
// isNewer returns true if the passed object is newer than newerRef
func isNewer(ti time.Time, newerRef string) bool {
if newerRef == "" {
return false
}
objectAge := time.Since(ti)
newerThan, e := ParseDuration(newerRef)
fatalIf(probe.NewError(e), "Unable to parse newerThan=`"+newerRef+"`.")
return objectAge >= time.Duration(newerThan)
}
// getLookupType returns the minio.BucketLookupType for lookup
// option entered on the command line
func getLookupType(l string) minio.BucketLookupType {
l = strings.ToLower(l)
switch l {
case "off":
return minio.BucketLookupDNS
case "on":
return minio.BucketLookupPath
}
return minio.BucketLookupAuto
}
// Return true if target url is a part of a source url such as:
// alias/bucket/ and alias/bucket/dir/, however
func isURLContains(srcURL, tgtURL, sep string) bool {
// Add a separator to source url if not found
if !strings.HasSuffix(srcURL, sep) {
srcURL += sep
}
if !strings.HasSuffix(tgtURL, sep) {
tgtURL += sep
}
// Check if we are going to copy a directory into itself
if strings.HasPrefix(tgtURL, srcURL) {
return true
}
return false
}
// ErrInvalidFileSystemAttribute reflects invalid fily system attribute
var ErrInvalidFileSystemAttribute = errors.New("Error in parsing file system attribute")
func parseAtimeMtime(attr map[string]string) (atime, mtime time.Time, err *probe.Error) {
if val, ok := attr["atime"]; ok {
vals := strings.SplitN(val, "#", 2)
atim, e := strconv.ParseInt(vals[0], 10, 64)
if e != nil {
return atime, mtime, probe.NewError(e)
}
var atimnsec int64
if len(vals) == 2 {
atimnsec, e = strconv.ParseInt(vals[1], 10, 64)
if e != nil {
return atime, mtime, probe.NewError(e)
}
}
atime = time.Unix(atim, atimnsec)
}
if val, ok := attr["mtime"]; ok {
vals := strings.SplitN(val, "#", 2)
mtim, e := strconv.ParseInt(vals[0], 10, 64)
if e != nil {
return atime, mtime, probe.NewError(e)
}
var mtimnsec int64
if len(vals) == 2 {
mtimnsec, e = strconv.ParseInt(vals[1], 10, 64)
if e != nil {
return atime, mtime, probe.NewError(e)
}
}
mtime = time.Unix(mtim, mtimnsec)
}
return atime, mtime, nil
}
// Returns a map by parsing the value of X-Amz-Meta-Mc-Attrs/X-Amz-Meta-s3Cmd-Attrs
func parseAttribute(meta map[string]string) (map[string]string, error) {
attribute := make(map[string]string)
if meta == nil {
return attribute, nil
}
parseAttrs := func(attrs string) error {
var err error
param := strings.Split(attrs, "/")
for _, val := range param {
attr := strings.TrimSpace(val)
if attr == "" {
err = ErrInvalidFileSystemAttribute
} else {
attrVal := strings.Split(attr, ":")
if len(attrVal) == 2 {
attribute[strings.TrimSpace(attrVal[0])] = strings.TrimSpace(attrVal[1])
} else if len(attrVal) == 1 {
attribute[attrVal[0]] = ""
} else {
err = ErrInvalidFileSystemAttribute
}
}
}
return err
}
if attrs, ok := meta[metadataKey]; ok {
if err := parseAttrs(attrs); err != nil {
return attribute, err
}
}
if attrs, ok := meta[metadataKeyS3Cmd]; ok {
if err := parseAttrs(attrs); err != nil {
return attribute, err
}
}
return attribute, nil
}
const ansi = "[\u001B\u009B][[\\]()#;?]*(?:(?:(?:[a-zA-Z\\d]*(?:;[a-zA-Z\\d]*)*)?\u0007)|(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PRZcf-ntqry=><~]))"
var reAnsi = regexp.MustCompile(ansi)
func centerText(s string, w int) string {
var sb strings.Builder
textWithoutColor := reAnsi.ReplaceAllString(s, "")
length := len(textWithoutColor)
padding := float64(w-length) / 2
fmt.Fprintf(&sb, "%s", bytes.Repeat([]byte{' '}, int(math.Ceil(padding))))
fmt.Fprintf(&sb, "%s", s)
fmt.Fprintf(&sb, "%s", bytes.Repeat([]byte{' '}, int(math.Floor(padding))))
return sb.String()
}
func getClient(aliasURL string) *madmin.AdminClient {
client, err := newAdminClient(aliasURL)
fatalIf(err, "Unable to initialize admin connection.")
return client
}
func httpClient(reqTimeout time.Duration) *http.Client {
return &http.Client{
Timeout: reqTimeout,
Transport: &http.Transport{
DialContext: (&net.Dialer{
Timeout: 10 * time.Second,
}).DialContext,
Proxy: ieproxy.GetProxyFunc(),
TLSClientConfig: &tls.Config{
RootCAs: globalRootCAs,
InsecureSkipVerify: globalInsecure,
// Can't use SSLv3 because of POODLE and BEAST
// Can't use TLSv1.0 because of POODLE and BEAST using CBC cipher
// Can't use TLSv1.1 because of RC4 cipher usage
MinVersion: tls.VersionTLS12,
},
IdleConnTimeout: 90 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
ExpectContinueTimeout: 10 * time.Second,
},
}
}
func getPrometheusToken(hostConfig *aliasConfigV10) (string, error) {
jwt := jwtgo.NewWithClaims(jwtgo.SigningMethodHS512, jwtgo.RegisteredClaims{
ExpiresAt: jwtgo.NewNumericDate(UTCNow().Add(defaultPrometheusJWTExpiry)),
Subject: hostConfig.AccessKey,
Issuer: "prometheus",
})
token, e := jwt.SignedString([]byte(hostConfig.SecretKey))
if e != nil {
return "", e
}
return token, nil
}