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A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang. (PERSONAL FORK)
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239// SiYuan - Refactor your thinking// Copyright (c) 2020-present, b3log.org//// 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 <https://www.gnu.org/licenses/>.
package util
import ( "net" "net/http" "net/url" "os" "strconv" "strings" "time"
"github.com/88250/gulu" "github.com/88250/lute/ast" "github.com/gin-gonic/gin" "github.com/imroc/req/v3" "github.com/siyuan-note/httpclient" "github.com/siyuan-note/logging")
// GetPrivateIPv4s 获取本地所有的私有 IPv4 地址（排除虚拟网卡）func GetPrivateIPv4s() (ret []string) { ret = []string{}
interfaces, err := net.Interfaces() if err != nil { return }
// 常见的虚拟网卡名称关键字黑名单 virtualKeywords := []string{"docker", "veth", "br-", "vmnet", "vbox", "utun", "tun", "tap", "bridge", "cloud", "hyper-"}
for _, itf := range interfaces { // 1. 基础状态过滤：必须是启动状态且不能是回环网卡 if itf.Flags&net.FlagUp == 0 || itf.Flags&net.FlagLoopback != 0 { continue }
// 2. 硬件地址过滤：物理网卡通常必须有 MAC 地址 if len(itf.HardwareAddr) == 0 { continue }
// 3. 名称过滤：排除已知虚拟网卡前缀 name := strings.ToLower(itf.Name) isVirtual := false for _, kw := range virtualKeywords { if strings.Contains(name, kw) { isVirtual = true break } } if isVirtual { continue }
// 4. 提取并校验 IP addrs, err := itf.Addrs() if err != nil { continue }
for _, addr := range addrs { ipNet, ok := addr.(*net.IPNet) if !ok { continue }
ip := ipNet.IP // 仅保留 IPv4 且必须是私有局域网地址 (10.x, 172.16.x, 192.168.x) if ip.To4() != nil && ip.IsPrivate() { ret = append(ret, ip.String()) } } } return}
func IsLocalHostname(hostname string) bool { if "localhost" == hostname || strings.HasSuffix(hostname, ".localhost") { return true } if ip := net.ParseIP(hostname); nil != ip { return ip.IsLoopback() } return false}
func IsLocalHost(host string) bool { if hostname, _, err := net.SplitHostPort(strings.TrimSpace(host)); err != nil { return false } else { return IsLocalHostname(hostname) }}
func IsLocalOrigin(origin string) bool { if u, err := url.Parse(origin); err == nil { return IsLocalHostname(u.Hostname()) } return false}
func IsOnline(checkURL string, skipTlsVerify bool, timeout int) bool { if "" == checkURL { return false }
u, err := url.Parse(checkURL) if err != nil { logging.LogWarnf("invalid check URL [%s]", checkURL) return false } if u.Scheme == "file" { filePath := strings.TrimPrefix(checkURL, "file://") _, err := os.Stat(filePath) return err == nil }
if isOnline(checkURL, skipTlsVerify, timeout) { return true }
logging.LogWarnf("network is offline [checkURL=%s]", checkURL) return false}
func IsPortOpen(port string) bool { timeout := time.Second conn, err := net.DialTimeout("tcp", net.JoinHostPort("127.0.0.1", port), timeout) if err != nil { return false } if nil != conn { conn.Close() return true } return false}
func isOnline(checkURL string, skipTlsVerify bool, timeout int) (ret bool) { c := req.C(). SetTimeout(time.Duration(timeout) * time.Millisecond). SetProxy(httpclient.ProxyFromEnvironment). SetUserAgent(UserAgent) if skipTlsVerify { c.EnableInsecureSkipVerify() }
for i := 0; i < 2; i++ { resp, err := c.R().Get(checkURL) if resp.GetHeader("Location") != "" { return true }
switch err.(type) { case *url.Error: if err.(*url.Error).URL != checkURL { // DNS 重定向 logging.LogWarnf("network is online [DNS redirect, checkURL=%s, retURL=%s]", checkURL, err.(*url.Error).URL) return true } }
ret = err == nil if ret { break }
logging.LogWarnf("check url [%s] is online failed: %s", checkURL, err) time.Sleep(1 * time.Second) } return}
func GetRemoteAddr(req *http.Request) string { ret := req.Header.Get("X-forwarded-for") ret = strings.TrimSpace(ret) if "" == ret { ret = req.Header.Get("X-Real-IP") } ret = strings.TrimSpace(ret) if "" == ret { return req.RemoteAddr } return strings.Split(ret, ",")[0]}
func JsonArg(c *gin.Context, result *gulu.Result) (arg map[string]interface{}, ok bool) { arg = map[string]interface{}{} if err := c.BindJSON(&arg); err != nil { result.Code = -1 result.Msg = "parses request failed" return }
ok = true return}
func InvalidIDPattern(idArg string, result *gulu.Result) bool { if ast.IsNodeIDPattern(idArg) { return false }
result.Code = -1 result.Msg = "invalid ID argument" return true}
func initHttpClient() { http.DefaultClient = httpclient.GetCloudFileClient2Min() http.DefaultTransport = httpclient.NewTransport(false)}
func ParsePort(portString string) (uint16, error) { port, err := strconv.ParseUint(portString, 10, 16) if err != nil { logging.LogErrorf("parse port [%s] failed: %s", portString, err) return 0, err } return uint16(port), nil}