This repository has been archived by the owner on Oct 24, 2023. It is now read-only.
forked from mattermost/mattermost
-
Notifications
You must be signed in to change notification settings - Fork 1
/
utils.go
348 lines (287 loc) · 7.9 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
// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package model
import (
"bytes"
"crypto/rand"
"encoding/base32"
"encoding/json"
"fmt"
"github.com/pborman/uuid"
"io"
"net/mail"
"net/url"
"regexp"
"strings"
"time"
)
type StringInterface map[string]interface{}
type StringMap map[string]string
type StringArray []string
type EncryptStringMap map[string]string
// AppError is returned for any http response that's not in the 200 range.
type AppError struct {
Message string `json:"message"` // Message to be display to the end user without debugging information
DetailedError string `json:"detailed_error"` // Internal error string to help the developer
RequestId string `json:"request_id"` // The RequestId that's also set in the header
StatusCode int `json:"status_code"` // The http status code
Where string `json:"-"` // The function where it happened in the form of Struct.Func
IsOAuth bool `json:"is_oauth"` // Whether the error is OAuth specific
}
func (er *AppError) Error() string {
return er.Where + ": " + er.Message + ", " + er.DetailedError
}
func (er *AppError) ToJson() string {
b, err := json.Marshal(er)
if err != nil {
return ""
} else {
return string(b)
}
}
// AppErrorFromJson will decode the input and return an AppError
func AppErrorFromJson(data io.Reader) *AppError {
decoder := json.NewDecoder(data)
var er AppError
err := decoder.Decode(&er)
if err == nil {
return &er
} else {
return NewAppError("AppErrorFromJson", "could not decode", err.Error())
}
}
func NewAppError(where string, message string, details string) *AppError {
ap := &AppError{}
ap.Message = message
ap.Where = where
ap.DetailedError = details
ap.StatusCode = 500
ap.IsOAuth = false
return ap
}
var encoding = base32.NewEncoding("ybndrfg8ejkmcpqxot1uwisza345h769")
// NewId is a globally unique identifier. It is a [A-Z0-9] string 26
// characters long. It is a UUID version 4 Guid that is zbased32 encoded
// with the padding stripped off.
func NewId() string {
var b bytes.Buffer
encoder := base32.NewEncoder(encoding, &b)
encoder.Write(uuid.NewRandom())
encoder.Close()
b.Truncate(26) // removes the '==' padding
return b.String()
}
func NewRandomString(length int) string {
var b bytes.Buffer
str := make([]byte, length+8)
rand.Read(str)
encoder := base32.NewEncoder(encoding, &b)
encoder.Write(str)
encoder.Close()
b.Truncate(length) // removes the '==' padding
return b.String()
}
// GetMillis is a convience method to get milliseconds since epoch.
func GetMillis() int64 {
return time.Now().UnixNano() / int64(time.Millisecond)
}
// MapToJson converts a map to a json string
func MapToJson(objmap map[string]string) string {
if b, err := json.Marshal(objmap); err != nil {
return ""
} else {
return string(b)
}
}
// MapFromJson will decode the key/value pair map
func MapFromJson(data io.Reader) map[string]string {
decoder := json.NewDecoder(data)
var objmap map[string]string
if err := decoder.Decode(&objmap); err != nil {
return make(map[string]string)
} else {
return objmap
}
}
func ArrayToJson(objmap []string) string {
if b, err := json.Marshal(objmap); err != nil {
return ""
} else {
return string(b)
}
}
func ArrayFromJson(data io.Reader) []string {
decoder := json.NewDecoder(data)
var objmap []string
if err := decoder.Decode(&objmap); err != nil {
return make([]string, 0)
} else {
return objmap
}
}
func StringInterfaceToJson(objmap map[string]interface{}) string {
if b, err := json.Marshal(objmap); err != nil {
return ""
} else {
return string(b)
}
}
func StringInterfaceFromJson(data io.Reader) map[string]interface{} {
decoder := json.NewDecoder(data)
var objmap map[string]interface{}
if err := decoder.Decode(&objmap); err != nil {
return make(map[string]interface{})
} else {
return objmap
}
}
func IsLower(s string) bool {
if strings.ToLower(s) == s {
return true
}
return false
}
func IsValidEmail(email string) bool {
if !IsLower(email) {
return false
}
if _, err := mail.ParseAddress(email); err == nil {
return true
}
return false
}
var reservedName = []string{
"www",
"web",
"admin",
"support",
"notify",
"test",
"demo",
"mail",
"team",
"channel",
"internal",
"localhost",
"dockerhost",
"stag",
"post",
"cluster",
"api",
"oauth",
}
var wwwStart = regexp.MustCompile(`^www`)
var betaStart = regexp.MustCompile(`^beta`)
var ciStart = regexp.MustCompile(`^ci`)
func GetSubDomain(s string) (string, string) {
s = strings.Replace(s, "http://", "", 1)
s = strings.Replace(s, "https://", "", 1)
match := wwwStart.MatchString(s)
if match {
return "", ""
}
match = betaStart.MatchString(s)
if match {
return "", ""
}
match = ciStart.MatchString(s)
if match {
return "", ""
}
parts := strings.Split(s, ".")
if len(parts) != 3 {
return "", ""
}
return parts[0], parts[1]
}
func IsValidChannelIdentifier(s string) bool {
if !IsValidAlphaNum(s, true) {
return false
}
if len(s) < 2 {
return false
}
return true
}
var validAlphaNumUnderscore = regexp.MustCompile(`^[a-z0-9]+([a-z\-\_0-9]+|(__)?)[a-z0-9]+$`)
var validAlphaNum = regexp.MustCompile(`^[a-z0-9]+([a-z\-0-9]+|(__)?)[a-z0-9]+$`)
func IsValidAlphaNum(s string, allowUnderscores bool) bool {
var match bool
if allowUnderscores {
match = validAlphaNumUnderscore.MatchString(s)
} else {
match = validAlphaNum.MatchString(s)
}
if !match {
return false
}
return true
}
func Etag(parts ...interface{}) string {
etag := CurrentVersion
for _, part := range parts {
etag += fmt.Sprintf(".%v", part)
}
return etag
}
var validHashtag = regexp.MustCompile(`^(#[A-Za-zäöüÄÖÜß]+[A-Za-z0-9äöüÄÖÜß_\-]*[A-Za-z0-9äöüÄÖÜß])$`)
var puncStart = regexp.MustCompile(`^[.,()&$!\?\[\]{}':;\\]+`)
var puncEnd = regexp.MustCompile(`[.,()&$#!\?\[\]{}';\\]+$`)
func ParseHashtags(text string) (string, string) {
words := strings.Fields(text)
hashtagString := ""
plainString := ""
for _, word := range words {
word = puncStart.ReplaceAllString(word, "")
word = puncEnd.ReplaceAllString(word, "")
if validHashtag.MatchString(word) {
hashtagString += " " + word
} else {
plainString += " " + word
}
}
if len(hashtagString) > 1000 {
hashtagString = hashtagString[:999]
lastSpace := strings.LastIndex(hashtagString, " ")
if lastSpace > -1 {
hashtagString = hashtagString[:lastSpace]
} else {
hashtagString = ""
}
}
return strings.TrimSpace(hashtagString), strings.TrimSpace(plainString)
}
func IsFileExtImage(ext string) bool {
ext = strings.ToLower(ext)
for _, imgExt := range IMAGE_EXTENSIONS {
if ext == imgExt {
return true
}
}
return false
}
func GetImageMimeType(ext string) string {
ext = strings.ToLower(ext)
if len(IMAGE_MIME_TYPES[ext]) == 0 {
return "image"
} else {
return IMAGE_MIME_TYPES[ext]
}
}
func ClearMentionTags(post string) string {
post = strings.Replace(post, "<mention>", "", -1)
post = strings.Replace(post, "</mention>", "", -1)
return post
}
var UrlRegex = regexp.MustCompile(`^((?:[a-z]+:\/\/)?(?:(?:[a-z0-9\-]+\.)+(?:[a-z]{2}|aero|arpa|biz|com|coop|edu|gov|info|int|jobs|mil|museum|name|nato|net|org|pro|travel|local|internal))(:[0-9]{1,5})?(?:\/[a-z0-9_\-\.~]+)*(\/([a-z0-9_\-\.]*)(?:\?[a-z0-9+_~\-\.%=&]*)?)?(?:#[a-zA-Z0-9!$&'()*+.=-_~:@/?]*)?)(?:\s+|$)$`)
var PartialUrlRegex = regexp.MustCompile(`/([A-Za-z0-9]{26})/([A-Za-z0-9]{26})/((?:[A-Za-z0-9]{26})?.+(?:\.[A-Za-z0-9]{3,})?)`)
var SplitRunes = map[rune]bool{',': true, ' ': true, '.': true, '!': true, '?': true, ':': true, ';': true, '\n': true, '<': true, '>': true, '(': true, ')': true, '{': true, '}': true, '[': true, ']': true, '+': true, '/': true, '\\': true}
func IsValidHttpUrl(rawUrl string) bool {
if strings.Index(rawUrl, "http://") != 0 && strings.Index(rawUrl, "https://") != 0 {
return false
}
if _, err := url.ParseRequestURI(rawUrl); err != nil {
return false
}
return true
}