mirror of
https://github.com/go-gitea/gitea
synced 2024-12-21 18:24:09 +01:00
537 lines
13 KiB
Go
537 lines
13 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package base
|
|
|
|
import (
|
|
"crypto/hmac"
|
|
"crypto/md5"
|
|
"crypto/rand"
|
|
"crypto/sha1"
|
|
"encoding/base64"
|
|
"encoding/hex"
|
|
"fmt"
|
|
"hash"
|
|
"html/template"
|
|
"math"
|
|
"net/http"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
"unicode"
|
|
"unicode/utf8"
|
|
|
|
"code.gitea.io/gitea/modules/log"
|
|
"code.gitea.io/gitea/modules/setting"
|
|
"github.com/Unknwon/com"
|
|
"github.com/Unknwon/i18n"
|
|
"github.com/gogits/chardet"
|
|
)
|
|
|
|
// EncodeMD5 encodes string to md5 hex value.
|
|
func EncodeMD5(str string) string {
|
|
m := md5.New()
|
|
m.Write([]byte(str))
|
|
return hex.EncodeToString(m.Sum(nil))
|
|
}
|
|
|
|
// EncodeSha1 string to sha1 hex value.
|
|
func EncodeSha1(str string) string {
|
|
h := sha1.New()
|
|
h.Write([]byte(str))
|
|
return hex.EncodeToString(h.Sum(nil))
|
|
}
|
|
|
|
// ShortSha is basically just truncating.
|
|
// It is DEPRECATED and will be removed in the future.
|
|
func ShortSha(sha1 string) string {
|
|
return TruncateString(sha1, 10)
|
|
}
|
|
|
|
// DetectEncoding detect the encoding of content
|
|
func DetectEncoding(content []byte) (string, error) {
|
|
if utf8.Valid(content) {
|
|
log.Debug("Detected encoding: utf-8 (fast)")
|
|
return "UTF-8", nil
|
|
}
|
|
|
|
result, err := chardet.NewTextDetector().DetectBest(content)
|
|
if result.Charset != "UTF-8" && len(setting.Repository.AnsiCharset) > 0 {
|
|
log.Debug("Using default AnsiCharset: %s", setting.Repository.AnsiCharset)
|
|
return setting.Repository.AnsiCharset, err
|
|
}
|
|
|
|
log.Debug("Detected encoding: %s", result.Charset)
|
|
return result.Charset, err
|
|
}
|
|
|
|
// BasicAuthDecode decode basic auth string
|
|
func BasicAuthDecode(encoded string) (string, string, error) {
|
|
s, err := base64.StdEncoding.DecodeString(encoded)
|
|
if err != nil {
|
|
return "", "", err
|
|
}
|
|
|
|
auth := strings.SplitN(string(s), ":", 2)
|
|
return auth[0], auth[1], nil
|
|
}
|
|
|
|
// BasicAuthEncode encode basic auth string
|
|
func BasicAuthEncode(username, password string) string {
|
|
return base64.StdEncoding.EncodeToString([]byte(username + ":" + password))
|
|
}
|
|
|
|
// GetRandomString generate random string by specify chars.
|
|
func GetRandomString(n int, alphabets ...byte) string {
|
|
const alphanum = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
|
|
var bytes = make([]byte, n)
|
|
rand.Read(bytes)
|
|
for i, b := range bytes {
|
|
if len(alphabets) == 0 {
|
|
bytes[i] = alphanum[b%byte(len(alphanum))]
|
|
} else {
|
|
bytes[i] = alphabets[b%byte(len(alphabets))]
|
|
}
|
|
}
|
|
return string(bytes)
|
|
}
|
|
|
|
// PBKDF2 http://code.google.com/p/go/source/browse/pbkdf2/pbkdf2.go?repo=crypto
|
|
// FIXME: use https://godoc.org/golang.org/x/crypto/pbkdf2?
|
|
func PBKDF2(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte {
|
|
prf := hmac.New(h, password)
|
|
hashLen := prf.Size()
|
|
numBlocks := (keyLen + hashLen - 1) / hashLen
|
|
|
|
var buf [4]byte
|
|
dk := make([]byte, 0, numBlocks*hashLen)
|
|
U := make([]byte, hashLen)
|
|
for block := 1; block <= numBlocks; block++ {
|
|
// N.B.: || means concatenation, ^ means XOR
|
|
// for each block T_i = U_1 ^ U_2 ^ ... ^ U_iter
|
|
// U_1 = PRF(password, salt || uint(i))
|
|
prf.Reset()
|
|
prf.Write(salt)
|
|
buf[0] = byte(block >> 24)
|
|
buf[1] = byte(block >> 16)
|
|
buf[2] = byte(block >> 8)
|
|
buf[3] = byte(block)
|
|
prf.Write(buf[:4])
|
|
dk = prf.Sum(dk)
|
|
T := dk[len(dk)-hashLen:]
|
|
copy(U, T)
|
|
|
|
// U_n = PRF(password, U_(n-1))
|
|
for n := 2; n <= iter; n++ {
|
|
prf.Reset()
|
|
prf.Write(U)
|
|
U = U[:0]
|
|
U = prf.Sum(U)
|
|
for x := range U {
|
|
T[x] ^= U[x]
|
|
}
|
|
}
|
|
}
|
|
return dk[:keyLen]
|
|
}
|
|
|
|
// VerifyTimeLimitCode verify time limit code
|
|
func VerifyTimeLimitCode(data string, minutes int, code string) bool {
|
|
if len(code) <= 18 {
|
|
return false
|
|
}
|
|
|
|
// split code
|
|
start := code[:12]
|
|
lives := code[12:18]
|
|
if d, err := com.StrTo(lives).Int(); err == nil {
|
|
minutes = d
|
|
}
|
|
|
|
// right active code
|
|
retCode := CreateTimeLimitCode(data, minutes, start)
|
|
if retCode == code && minutes > 0 {
|
|
// check time is expired or not
|
|
before, _ := time.ParseInLocation("200601021504", start, time.Local)
|
|
now := time.Now()
|
|
if before.Add(time.Minute*time.Duration(minutes)).Unix() > now.Unix() {
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// TimeLimitCodeLength default value for time limit code
|
|
const TimeLimitCodeLength = 12 + 6 + 40
|
|
|
|
// CreateTimeLimitCode create a time limit code
|
|
// code format: 12 length date time string + 6 minutes string + 40 sha1 encoded string
|
|
func CreateTimeLimitCode(data string, minutes int, startInf interface{}) string {
|
|
format := "200601021504"
|
|
|
|
var start, end time.Time
|
|
var startStr, endStr string
|
|
|
|
if startInf == nil {
|
|
// Use now time create code
|
|
start = time.Now()
|
|
startStr = start.Format(format)
|
|
} else {
|
|
// use start string create code
|
|
startStr = startInf.(string)
|
|
start, _ = time.ParseInLocation(format, startStr, time.Local)
|
|
startStr = start.Format(format)
|
|
}
|
|
|
|
end = start.Add(time.Minute * time.Duration(minutes))
|
|
endStr = end.Format(format)
|
|
|
|
// create sha1 encode string
|
|
sh := sha1.New()
|
|
sh.Write([]byte(data + setting.SecretKey + startStr + endStr + com.ToStr(minutes)))
|
|
encoded := hex.EncodeToString(sh.Sum(nil))
|
|
|
|
code := fmt.Sprintf("%s%06d%s", startStr, minutes, encoded)
|
|
return code
|
|
}
|
|
|
|
// HashEmail hashes email address to MD5 string.
|
|
// https://en.gravatar.com/site/implement/hash/
|
|
func HashEmail(email string) string {
|
|
return EncodeMD5(strings.ToLower(strings.TrimSpace(email)))
|
|
}
|
|
|
|
// AvatarLink returns relative avatar link to the site domain by given email,
|
|
// which includes app sub-url as prefix. However, it is possible
|
|
// to return full URL if user enables Gravatar-like service.
|
|
func AvatarLink(email string) string {
|
|
if setting.EnableFederatedAvatar && setting.LibravatarService != nil {
|
|
// TODO: This doesn't check any error. AvatarLink should return (string, error)
|
|
url, _ := setting.LibravatarService.FromEmail(email)
|
|
return url
|
|
}
|
|
|
|
if !setting.DisableGravatar {
|
|
return setting.GravatarSource + HashEmail(email)
|
|
}
|
|
|
|
return setting.AppSubURL + "/img/avatar_default.png"
|
|
}
|
|
|
|
// Seconds-based time units
|
|
const (
|
|
Minute = 60
|
|
Hour = 60 * Minute
|
|
Day = 24 * Hour
|
|
Week = 7 * Day
|
|
Month = 30 * Day
|
|
Year = 12 * Month
|
|
)
|
|
|
|
func computeTimeDiff(diff int64) (int64, string) {
|
|
diffStr := ""
|
|
switch {
|
|
case diff <= 0:
|
|
diff = 0
|
|
diffStr = "now"
|
|
case diff < 2:
|
|
diff = 0
|
|
diffStr = "1 second"
|
|
case diff < 1*Minute:
|
|
diffStr = fmt.Sprintf("%d seconds", diff)
|
|
diff = 0
|
|
|
|
case diff < 2*Minute:
|
|
diff -= 1 * Minute
|
|
diffStr = "1 minute"
|
|
case diff < 1*Hour:
|
|
diffStr = fmt.Sprintf("%d minutes", diff/Minute)
|
|
diff -= diff / Minute * Minute
|
|
|
|
case diff < 2*Hour:
|
|
diff -= 1 * Hour
|
|
diffStr = "1 hour"
|
|
case diff < 1*Day:
|
|
diffStr = fmt.Sprintf("%d hours", diff/Hour)
|
|
diff -= diff / Hour * Hour
|
|
|
|
case diff < 2*Day:
|
|
diff -= 1 * Day
|
|
diffStr = "1 day"
|
|
case diff < 1*Week:
|
|
diffStr = fmt.Sprintf("%d days", diff/Day)
|
|
diff -= diff / Day * Day
|
|
|
|
case diff < 2*Week:
|
|
diff -= 1 * Week
|
|
diffStr = "1 week"
|
|
case diff < 1*Month:
|
|
diffStr = fmt.Sprintf("%d weeks", diff/Week)
|
|
diff -= diff / Week * Week
|
|
|
|
case diff < 2*Month:
|
|
diff -= 1 * Month
|
|
diffStr = "1 month"
|
|
case diff < 1*Year:
|
|
diffStr = fmt.Sprintf("%d months", diff/Month)
|
|
diff -= diff / Month * Month
|
|
|
|
case diff < 2*Year:
|
|
diff -= 1 * Year
|
|
diffStr = "1 year"
|
|
default:
|
|
diffStr = fmt.Sprintf("%d years", diff/Year)
|
|
diff = 0
|
|
}
|
|
return diff, diffStr
|
|
}
|
|
|
|
// TimeSincePro calculates the time interval and generate full user-friendly string.
|
|
func TimeSincePro(then time.Time) string {
|
|
now := time.Now()
|
|
diff := now.Unix() - then.Unix()
|
|
|
|
if then.After(now) {
|
|
return "future"
|
|
}
|
|
|
|
var timeStr, diffStr string
|
|
for {
|
|
if diff == 0 {
|
|
break
|
|
}
|
|
|
|
diff, diffStr = computeTimeDiff(diff)
|
|
timeStr += ", " + diffStr
|
|
}
|
|
return strings.TrimPrefix(timeStr, ", ")
|
|
}
|
|
|
|
func timeSince(then time.Time, lang string) string {
|
|
now := time.Now()
|
|
|
|
lbl := i18n.Tr(lang, "tool.ago")
|
|
diff := now.Unix() - then.Unix()
|
|
if then.After(now) {
|
|
lbl = i18n.Tr(lang, "tool.from_now")
|
|
diff = then.Unix() - now.Unix()
|
|
}
|
|
|
|
switch {
|
|
case diff <= 0:
|
|
return i18n.Tr(lang, "tool.now")
|
|
case diff <= 2:
|
|
return i18n.Tr(lang, "tool.1s", lbl)
|
|
case diff < 1*Minute:
|
|
return i18n.Tr(lang, "tool.seconds", diff, lbl)
|
|
|
|
case diff < 2*Minute:
|
|
return i18n.Tr(lang, "tool.1m", lbl)
|
|
case diff < 1*Hour:
|
|
return i18n.Tr(lang, "tool.minutes", diff/Minute, lbl)
|
|
|
|
case diff < 2*Hour:
|
|
return i18n.Tr(lang, "tool.1h", lbl)
|
|
case diff < 1*Day:
|
|
return i18n.Tr(lang, "tool.hours", diff/Hour, lbl)
|
|
|
|
case diff < 2*Day:
|
|
return i18n.Tr(lang, "tool.1d", lbl)
|
|
case diff < 1*Week:
|
|
return i18n.Tr(lang, "tool.days", diff/Day, lbl)
|
|
|
|
case diff < 2*Week:
|
|
return i18n.Tr(lang, "tool.1w", lbl)
|
|
case diff < 1*Month:
|
|
return i18n.Tr(lang, "tool.weeks", diff/Week, lbl)
|
|
|
|
case diff < 2*Month:
|
|
return i18n.Tr(lang, "tool.1mon", lbl)
|
|
case diff < 1*Year:
|
|
return i18n.Tr(lang, "tool.months", diff/Month, lbl)
|
|
|
|
case diff < 2*Year:
|
|
return i18n.Tr(lang, "tool.1y", lbl)
|
|
default:
|
|
return i18n.Tr(lang, "tool.years", diff/Year, lbl)
|
|
}
|
|
}
|
|
|
|
// RawTimeSince retrieves i18n key of time since t
|
|
func RawTimeSince(t time.Time, lang string) string {
|
|
return timeSince(t, lang)
|
|
}
|
|
|
|
// TimeSince calculates the time interval and generate user-friendly string.
|
|
func TimeSince(t time.Time, lang string) template.HTML {
|
|
return template.HTML(fmt.Sprintf(`<span class="time-since" title="%s">%s</span>`, t.Format(setting.TimeFormat), timeSince(t, lang)))
|
|
}
|
|
|
|
// Storage space size types
|
|
const (
|
|
Byte = 1
|
|
KByte = Byte * 1024
|
|
MByte = KByte * 1024
|
|
GByte = MByte * 1024
|
|
TByte = GByte * 1024
|
|
PByte = TByte * 1024
|
|
EByte = PByte * 1024
|
|
)
|
|
|
|
var bytesSizeTable = map[string]uint64{
|
|
"b": Byte,
|
|
"kb": KByte,
|
|
"mb": MByte,
|
|
"gb": GByte,
|
|
"tb": TByte,
|
|
"pb": PByte,
|
|
"eb": EByte,
|
|
}
|
|
|
|
func logn(n, b float64) float64 {
|
|
return math.Log(n) / math.Log(b)
|
|
}
|
|
|
|
func humanateBytes(s uint64, base float64, sizes []string) string {
|
|
if s < 10 {
|
|
return fmt.Sprintf("%dB", s)
|
|
}
|
|
e := math.Floor(logn(float64(s), base))
|
|
suffix := sizes[int(e)]
|
|
val := float64(s) / math.Pow(base, math.Floor(e))
|
|
f := "%.0f"
|
|
if val < 10 {
|
|
f = "%.1f"
|
|
}
|
|
|
|
return fmt.Sprintf(f+"%s", val, suffix)
|
|
}
|
|
|
|
// FileSize calculates the file size and generate user-friendly string.
|
|
func FileSize(s int64) string {
|
|
sizes := []string{"B", "KB", "MB", "GB", "TB", "PB", "EB"}
|
|
return humanateBytes(uint64(s), 1024, sizes)
|
|
}
|
|
|
|
// Subtract deals with subtraction of all types of number.
|
|
func Subtract(left interface{}, right interface{}) interface{} {
|
|
var rleft, rright int64
|
|
var fleft, fright float64
|
|
var isInt = true
|
|
switch left.(type) {
|
|
case int:
|
|
rleft = int64(left.(int))
|
|
case int8:
|
|
rleft = int64(left.(int8))
|
|
case int16:
|
|
rleft = int64(left.(int16))
|
|
case int32:
|
|
rleft = int64(left.(int32))
|
|
case int64:
|
|
rleft = left.(int64)
|
|
case float32:
|
|
fleft = float64(left.(float32))
|
|
isInt = false
|
|
case float64:
|
|
fleft = left.(float64)
|
|
isInt = false
|
|
}
|
|
|
|
switch right.(type) {
|
|
case int:
|
|
rright = int64(right.(int))
|
|
case int8:
|
|
rright = int64(right.(int8))
|
|
case int16:
|
|
rright = int64(right.(int16))
|
|
case int32:
|
|
rright = int64(right.(int32))
|
|
case int64:
|
|
rright = right.(int64)
|
|
case float32:
|
|
fright = float64(left.(float32))
|
|
isInt = false
|
|
case float64:
|
|
fleft = left.(float64)
|
|
isInt = false
|
|
}
|
|
|
|
if isInt {
|
|
return rleft - rright
|
|
}
|
|
return fleft + float64(rleft) - (fright + float64(rright))
|
|
}
|
|
|
|
// EllipsisString returns a truncated short string,
|
|
// it appends '...' in the end of the length of string is too large.
|
|
func EllipsisString(str string, length int) string {
|
|
if length <= 3 {
|
|
return "..."
|
|
}
|
|
if len(str) <= length {
|
|
return str
|
|
}
|
|
return str[:length-3] + "..."
|
|
}
|
|
|
|
// TruncateString returns a truncated string with given limit,
|
|
// it returns input string if length is not reached limit.
|
|
func TruncateString(str string, limit int) string {
|
|
if len(str) < limit {
|
|
return str
|
|
}
|
|
return str[:limit]
|
|
}
|
|
|
|
// StringsToInt64s converts a slice of string to a slice of int64.
|
|
func StringsToInt64s(strs []string) []int64 {
|
|
ints := make([]int64, len(strs))
|
|
for i := range strs {
|
|
ints[i] = com.StrTo(strs[i]).MustInt64()
|
|
}
|
|
return ints
|
|
}
|
|
|
|
// Int64sToStrings converts a slice of int64 to a slice of string.
|
|
func Int64sToStrings(ints []int64) []string {
|
|
strs := make([]string, len(ints))
|
|
for i := range ints {
|
|
strs[i] = strconv.FormatInt(ints[i], 10)
|
|
}
|
|
return strs
|
|
}
|
|
|
|
// Int64sToMap converts a slice of int64 to a int64 map.
|
|
func Int64sToMap(ints []int64) map[int64]bool {
|
|
m := make(map[int64]bool)
|
|
for _, i := range ints {
|
|
m[i] = true
|
|
}
|
|
return m
|
|
}
|
|
|
|
// IsLetter reports whether the rune is a letter (category L).
|
|
// https://github.com/golang/go/blob/master/src/go/scanner/scanner.go#L257
|
|
func IsLetter(ch rune) bool {
|
|
return 'a' <= ch && ch <= 'z' || 'A' <= ch && ch <= 'Z' || ch == '_' || ch >= 0x80 && unicode.IsLetter(ch)
|
|
}
|
|
|
|
// IsTextFile returns true if file content format is plain text or empty.
|
|
func IsTextFile(data []byte) bool {
|
|
if len(data) == 0 {
|
|
return true
|
|
}
|
|
return strings.Index(http.DetectContentType(data), "text/") != -1
|
|
}
|
|
|
|
// IsImageFile detectes if data is an image format
|
|
func IsImageFile(data []byte) bool {
|
|
return strings.Index(http.DetectContentType(data), "image/") != -1
|
|
}
|
|
|
|
// IsPDFFile detectes if data is a pdf format
|
|
func IsPDFFile(data []byte) bool {
|
|
return strings.Index(http.DetectContentType(data), "application/pdf") != -1
|
|
}
|