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help.go
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help.go
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package _189
import (
"bytes"
"crypto/aes"
"crypto/hmac"
"crypto/md5"
"crypto/rand"
"crypto/rsa"
"crypto/sha1"
"crypto/x509"
"encoding/base64"
"encoding/hex"
"encoding/pem"
"fmt"
"net/url"
"regexp"
"strconv"
"strings"
myrand "github.com/alist-org/alist/v3/pkg/utils/random"
log "github.com/sirupsen/logrus"
)
func random() string {
return fmt.Sprintf("0.%17v", myrand.Rand.Int63n(100000000000000000))
}
func RsaEncode(origData []byte, j_rsakey string, hex bool) string {
publicKey := []byte("-----BEGIN PUBLIC KEY-----\n" + j_rsakey + "\n-----END PUBLIC KEY-----")
block, _ := pem.Decode(publicKey)
pubInterface, _ := x509.ParsePKIXPublicKey(block.Bytes)
pub := pubInterface.(*rsa.PublicKey)
b, err := rsa.EncryptPKCS1v15(rand.Reader, pub, origData)
if err != nil {
log.Errorf("err: %s", err.Error())
}
res := base64.StdEncoding.EncodeToString(b)
if hex {
return b64tohex(res)
}
return res
}
var b64map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
var BI_RM = "0123456789abcdefghijklmnopqrstuvwxyz"
func int2char(a int) string {
return strings.Split(BI_RM, "")[a]
}
func b64tohex(a string) string {
d := ""
e := 0
c := 0
for i := 0; i < len(a); i++ {
m := strings.Split(a, "")[i]
if m != "=" {
v := strings.Index(b64map, m)
if 0 == e {
e = 1
d += int2char(v >> 2)
c = 3 & v
} else if 1 == e {
e = 2
d += int2char(c<<2 | v>>4)
c = 15 & v
} else if 2 == e {
e = 3
d += int2char(c)
d += int2char(v >> 2)
c = 3 & v
} else {
e = 0
d += int2char(c<<2 | v>>4)
d += int2char(15 & v)
}
}
}
if e == 1 {
d += int2char(c << 2)
}
return d
}
func qs(form map[string]string) string {
f := make(url.Values)
for k, v := range form {
f.Set(k, v)
}
return EncodeParam(f)
//strList := make([]string, 0)
//for k, v := range form {
// strList = append(strList, fmt.Sprintf("%s=%s", k, url.QueryEscape(v)))
//}
//return strings.Join(strList, "&")
}
func EncodeParam(v url.Values) string {
if v == nil {
return ""
}
var buf strings.Builder
keys := make([]string, 0, len(v))
for k := range v {
keys = append(keys, k)
}
for _, k := range keys {
vs := v[k]
for _, v := range vs {
if buf.Len() > 0 {
buf.WriteByte('&')
}
buf.WriteString(k)
buf.WriteByte('=')
//if k == "fileName" {
// buf.WriteString(encode(v))
//} else {
buf.WriteString(v)
//}
}
}
return buf.String()
}
func encode(str string) string {
//str = strings.ReplaceAll(str, "%", "%25")
//str = strings.ReplaceAll(str, "&", "%26")
//str = strings.ReplaceAll(str, "+", "%2B")
//return str
return url.QueryEscape(str)
}
func AesEncrypt(data, key []byte) []byte {
block, _ := aes.NewCipher(key)
if block == nil {
return []byte{}
}
data = PKCS7Padding(data, block.BlockSize())
decrypted := make([]byte, len(data))
size := block.BlockSize()
for bs, be := 0, size; bs < len(data); bs, be = bs+size, be+size {
block.Encrypt(decrypted[bs:be], data[bs:be])
}
return decrypted
}
func PKCS7Padding(ciphertext []byte, blockSize int) []byte {
padding := blockSize - len(ciphertext)%blockSize
padtext := bytes.Repeat([]byte{byte(padding)}, padding)
return append(ciphertext, padtext...)
}
func hmacSha1(data string, secret string) string {
h := hmac.New(sha1.New, []byte(secret))
h.Write([]byte(data))
return hex.EncodeToString(h.Sum(nil))
}
func getMd5(data []byte) []byte {
h := md5.New()
h.Write(data)
return h.Sum(nil)
}
func decodeURIComponent(str string) string {
r, _ := url.PathUnescape(str)
//r = strings.ReplaceAll(r, " ", "+")
return r
}
func Random(v string) string {
reg := regexp.MustCompilePOSIX("[xy]")
data := reg.ReplaceAllFunc([]byte(v), func(msg []byte) []byte {
var i int64
t := int64(16 * myrand.Rand.Float32())
if msg[0] == 120 {
i = t
} else {
i = 3&t | 8
}
return []byte(strconv.FormatInt(i, 16))
})
return string(data)
}