a503f0cf40
* ddns: store configuation in database Co-authored-by: nap0o <144927971+nap0o@users.noreply.github.com> * feat: split domain with soa lookup * switch to libdns interface * ddns: add unit test * ddns: skip TestSplitDomainSOA on ci network is not steady * fix error handling * fix error handling --------- Co-authored-by: nap0o <144927971+nap0o@users.noreply.github.com>
93 lines
1.9 KiB
Go
93 lines
1.9 KiB
Go
package utils
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import (
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"crypto/rand"
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"math/big"
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"os"
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"regexp"
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"strings"
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jsoniter "github.com/json-iterator/go"
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)
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var (
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Json = jsoniter.ConfigCompatibleWithStandardLibrary
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DNSServers = []string{"1.1.1.1:53", "223.5.5.5:53", "[2606:4700:4700::1111]:53", "[2400:3200::1]:53"}
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)
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func IsWindows() bool {
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return os.PathSeparator == '\\' && os.PathListSeparator == ';'
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}
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var ipv4Re = regexp.MustCompile(`(\d*\.).*(\.\d*)`)
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func ipv4Desensitize(ipv4Addr string) string {
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return ipv4Re.ReplaceAllString(ipv4Addr, "$1****$2")
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}
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var ipv6Re = regexp.MustCompile(`(\w*:\w*:).*(:\w*:\w*)`)
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func ipv6Desensitize(ipv6Addr string) string {
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return ipv6Re.ReplaceAllString(ipv6Addr, "$1****$2")
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}
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func IPDesensitize(ipAddr string) string {
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ipAddr = ipv4Desensitize(ipAddr)
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ipAddr = ipv6Desensitize(ipAddr)
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return ipAddr
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}
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// SplitIPAddr 传入/分割的v4v6混合地址，返回v4和v6地址与有效地址
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func SplitIPAddr(v4v6Bundle string) (string, string, string) {
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ipList := strings.Split(v4v6Bundle, "/")
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ipv4 := ""
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ipv6 := ""
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validIP := ""
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if len(ipList) > 1 {
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// 双栈
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ipv4 = ipList[0]
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ipv6 = ipList[1]
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validIP = ipv4
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} else if len(ipList) == 1 {
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// 仅ipv4|ipv6
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if strings.Contains(ipList[0], ":") {
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ipv6 = ipList[0]
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validIP = ipv6
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} else {
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ipv4 = ipList[0]
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validIP = ipv4
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}
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}
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return ipv4, ipv6, validIP
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}
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func IsFileExists(path string) bool {
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_, err := os.Stat(path)
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return err == nil
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}
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func GenerateRandomString(n int) (string, error) {
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const letters = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
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lettersLength := big.NewInt(int64(len(letters)))
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ret := make([]byte, n)
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for i := 0; i < n; i++ {
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num, err := rand.Int(rand.Reader, lettersLength)
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if err != nil {
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return "", err
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}
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ret[i] = letters[num.Int64()]
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}
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return string(ret), nil
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}
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func Uint64SubInt64(a uint64, b int64) uint64 {
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if b < 0 {
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return a + uint64(-b)
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}
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if a < uint64(b) {
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return 0
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}
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return a - uint64(b)
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}
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