482 lines
16 KiB
Go
482 lines
16 KiB
Go
package tls
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import (
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"b612.me/starlog"
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"crypto/ecdsa"
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"crypto/rsa"
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"crypto/tls"
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"crypto/x509"
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"encoding/pem"
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"fmt"
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"github.com/spf13/cobra"
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"golang.org/x/net/idna"
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"golang.org/x/net/proxy"
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"net"
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"os"
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"path/filepath"
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"strings"
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"sync"
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"time"
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)
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var hideDetail bool
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var dump string
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var reqRawIP int
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var timeoutMillSec int
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var socks5 string
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var socks5Auth string
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var showCA bool
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var skipVerify bool
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func init() {
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Cmd.Flags().BoolVarP(&hideDetail, "hide-detail", "H", false, "隐藏证书详细信息")
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Cmd.Flags().StringVarP(&dump, "dump", "d", "", "将证书保存到文件")
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Cmd.Flags().IntVarP(&reqRawIP, "resolve-ip", "r", 0, "使用解析到的IP地址作为SNI进行tls连接，输入数字表示使用解析到的第几个IP地址")
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Cmd.Flags().IntVarP(&timeoutMillSec, "timeout", "t", 5000, "连接超时时间(毫秒)")
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Cmd.Flags().StringVarP(&socks5, "socks5", "p", "", "socks5代理，示例：127.0.0.1:1080")
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Cmd.Flags().StringVarP(&socks5Auth, "socks5-auth", "A", "", "socks5代理认证，示例：username:password")
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Cmd.Flags().BoolVarP(&showCA, "show-ca", "c", false, "显示CA证书")
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Cmd.Flags().BoolVarP(&skipVerify, "skip-verify", "k", false, "跳过证书验证")
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}
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var Cmd = &cobra.Command{
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Use: "tls",
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Short: "查看TLS证书信息",
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Long: `查看TLS证书信息
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用法: b612 tls [-d|-r|-t|-p|-A-c] [域名:端口] [域名:端口/服务器名] [域名/服务器名]
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如果使用IP直接连接，对于IPv6地址需要使用方括号包裹，如[::1]:443
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示例：b612 tls -d cert.pem example.com:443/test.example.com
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含义：连接example.com:443，SNI设置为test.example.com，并将证书保存到cert.pem文件中。
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示例：b612 tls -r 1 example.com:443
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含义：连接example.com:443，使用解析到的第一个IP地址进行连接，并且这个IP地址作为SNI进行连接
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。
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示例：b612 tls -r 1 example.com:443/example.com
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含义：连接example.com:443，使用解析到的第一个IP地址进行连接，并使用example.com作为SNI进行连接。`,
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Run: func(cmd *cobra.Command, args []string) {
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for _, target := range args {
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showTls(target, !hideDetail, showCA, reqRawIP, dump, skipVerify, time.Duration(timeoutMillSec)*time.Millisecond)
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}
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},
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}
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func showTls(target string, showDetail, showCA bool, reqRawIP int, dumpPath string, skipVerify bool, timeout time.Duration) {
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var err error
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{
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sp := strings.Split(target, "/")
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hostname, port, err := net.SplitHostPort(sp[0])
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if port == "" || err != nil {
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if hostname == "" {
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hostname = sp[0]
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}
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port = "443"
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sp[0] = hostname + ":443"
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target = strings.Join(sp, "/")
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}
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}
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if timeout == 0 {
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timeout = 5 * time.Second
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}
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hostname, _, _ := net.SplitHostPort(strings.Split(target, "/")[0])
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hasHostname := false
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if strings.Count(target, "/") > 0 {
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strs := strings.Split(target, "/")
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if len(strs) != 2 {
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starlog.Errorln("invalid target format")
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return
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}
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target = strs[0]
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hostname = strs[1]
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hasHostname = true
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}
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if reqRawIP > 0 {
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domain, port, _ := net.SplitHostPort(strings.Split(target, "/")[0])
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ips, err := net.LookupIP(domain)
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if err != nil {
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starlog.Errorln("failed to resolve domain: " + err.Error())
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return
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}
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if len(ips) == 0 {
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starlog.Errorln("no ip found for domain")
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return
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}
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for _, v := range ips {
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starlog.Infof("解析到的IP地址为: %s\n", v.String())
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}
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if reqRawIP > len(ips) {
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reqRawIP = len(ips)
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}
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targetIp := ips[reqRawIP-1].String()
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if ips[reqRawIP-1].To16() != nil {
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targetIp = "[" + targetIp + "]"
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}
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target = targetIp + ":" + port
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if !hasHostname {
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hostname = ips[reqRawIP-1].String()
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}
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starlog.Noticeln("使用解析到的IP地址进行连接:", target)
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}
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starlog.Noticef("将使用如下地址连接：%s ; ServerName: %s\n", target, hostname)
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punyCode, err := idna.ToASCII(hostname)
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if err == nil {
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if punyCode != hostname {
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starlog.Infoln("检测到域名中含有非ASCII字符，PunyCode转换后为:", punyCode)
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hostname = punyCode
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}
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}
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starlog.Infof("正在连接服务器: %s\n", target)
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var netDialer = &net.Dialer{
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Timeout: timeout,
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}
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var socksDialer *proxy.Dialer
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if socks5 != "" {
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var auth *proxy.Auth
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if socks5Auth != "" {
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up := strings.SplitN(socks5Auth, ":", 2)
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if len(up) == 2 {
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auth = &proxy.Auth{
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User: up[0],
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Password: up[1],
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}
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} else {
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starlog.Errorln("socks5认证格式错误")
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return
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}
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}
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s5Dial, err := proxy.SOCKS5("tcp", socks5, auth, proxy.Direct)
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if err == nil {
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socksDialer = &s5Dial
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} else {
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starlog.Errorln("socks5代理错误:", err)
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return
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}
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}
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var verifyErr error
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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defer wg.Done()
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if !skipVerify {
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return
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}
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var conn *tls.Conn
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if socksDialer == nil {
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conn, verifyErr = tls.DialWithDialer(netDialer, "tcp", target, &tls.Config{
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InsecureSkipVerify: false,
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ServerName: hostname,
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MinVersion: tls.VersionSSL30,
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})
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if verifyErr == nil {
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conn.Close()
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}
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} else {
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con, err := (*socksDialer).Dial("tcp", target)
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if err != nil {
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verifyErr = err
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return
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}
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conn = tls.Client(con, &tls.Config{
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InsecureSkipVerify: false,
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ServerName: hostname,
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MinVersion: tls.VersionSSL30,
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})
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verifyErr = conn.Handshake()
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con.Close()
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}
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}()
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var conn *tls.Conn
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if socksDialer == nil {
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conn, err = tls.DialWithDialer(netDialer, "tcp", target, &tls.Config{
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InsecureSkipVerify: skipVerify,
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ServerName: hostname,
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MinVersion: tls.VersionSSL30,
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})
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if err != nil {
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starlog.Errorln("failed to connect: " + err.Error())
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return
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}
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} else {
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con, err := (*socksDialer).Dial("tcp", target)
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if err != nil {
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starlog.Errorln("failed to connect: " + err.Error())
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return
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}
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defer con.Close()
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conn = tls.Client(con, &tls.Config{
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InsecureSkipVerify: skipVerify,
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ServerName: hostname,
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MinVersion: tls.VersionSSL30,
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})
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err = conn.Handshake()
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if err != nil {
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starlog.Errorln("failed to handshake: " + err.Error())
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return
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}
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}
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defer conn.Close()
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starlog.Infof("连接成功，对方IP:%s，正在获取证书信息\n", conn.RemoteAddr().String())
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certs := conn.ConnectionState().PeerCertificates
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if len(certs) == 0 {
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starlog.Errorln("no certificate found")
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return
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}
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starlog.Infof("证书获取成功，证书链上共有%d个证书\n", len(certs))
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state := conn.ConnectionState()
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switch state.Version {
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case tls.VersionSSL30:
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starlog.Warningln("当前TLS版本: SSL 3.0")
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case tls.VersionTLS10:
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starlog.Warningln("当前TLS版本: TLS 1.0")
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case tls.VersionTLS11:
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starlog.Warningln("当前TLS版本: TLS 1.1")
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case tls.VersionTLS12:
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starlog.Infoln("当前TLS版本: TLS 1.2")
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case tls.VersionTLS13:
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starlog.Infoln("当前TLS版本: TLS 1.3")
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}
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switch state.CipherSuite {
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case tls.TLS_RSA_WITH_RC4_128_SHA:
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starlog.Infoln("当前加密套件: TLS_RSA_WITH_RC4_128_SHA")
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case tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA:
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starlog.Infoln("当前加密套件: TLS_RSA_WITH_3DES_EDE_CBC_SHA")
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case tls.TLS_RSA_WITH_AES_128_CBC_SHA:
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starlog.Infoln("当前加密套件: TLS_RSA_WITH_AES_128_CBC_SHA")
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case tls.TLS_RSA_WITH_AES_256_CBC_SHA:
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starlog.Infoln("当前加密套件: TLS_RSA_WITH_AES_256_CBC_SHA")
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case tls.TLS_RSA_WITH_AES_128_CBC_SHA256:
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starlog.Infoln("当前加密套件: TLS_RSA_WITH_AES_128_CBC_SHA256")
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case tls.TLS_RSA_WITH_AES_128_GCM_SHA256:
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starlog.Infoln("当前加密套件: TLS_RSA_WITH_AES_128_GCM_SHA256")
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case tls.TLS_RSA_WITH_AES_256_GCM_SHA384:
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starlog.Infoln("当前加密套件: TLS_RSA_WITH_AES_256_GCM_SHA384")
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case tls.TLS_ECDHE_ECDSA_WITH_RC4_128_SHA:
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starlog.Infoln("当前加密套件: TLS_ECDHE_ECDSA_WITH_RC4_128_SHA")
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case tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA:
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starlog.Infoln("当前加密套件: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA")
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case tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA:
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starlog.Infoln("当前加密套件: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA")
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case tls.TLS_ECDHE_RSA_WITH_RC4_128_SHA:
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starlog.Infoln("当前加密套件: TLS_ECDHE_RSA_WITH_RC4_128_SHA")
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case tls.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA:
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starlog.Infoln("当前加密套件: TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA")
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case tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA:
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starlog.Infoln("当前加密套件: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA")
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case tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA:
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starlog.Infoln("当前加密套件: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA")
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case tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256:
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starlog.Infoln("当前加密套件: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256")
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case tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256:
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starlog.Infoln("当前加密套件: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256")
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case tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256:
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starlog.Infoln("当前加密套件: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256")
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case tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256:
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starlog.Infoln("当前加密套件: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256")
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case tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384:
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starlog.Infoln("当前加密套件: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384")
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case tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384:
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starlog.Infoln("当前加密套件: TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384")
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case tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305:
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starlog.Infoln("当前加密套件: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305")
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case tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305:
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starlog.Infoln("当前加密套件: TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305")
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case tls.TLS_AES_128_GCM_SHA256:
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starlog.Infoln("当前加密套件: TLS_AES_128_GCM_SHA256")
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case tls.TLS_AES_256_GCM_SHA384:
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starlog.Infoln("当前加密套件: TLS_AES_256_GCM_SHA384")
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case tls.TLS_CHACHA20_POLY1305_SHA256:
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starlog.Infoln("当前加密套件: TLS_CHACHA20_POLY1305_SHA256")
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default:
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starlog.Infoln("当前加密套件：", state.CipherSuite)
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}
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starlog.Infoln("服务器名称:", state.ServerName)
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wg.Wait()
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if verifyErr != nil {
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starlog.Red("证书验证失败: " + verifyErr.Error())
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} else {
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starlog.Green("证书验证成功")
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}
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if showDetail {
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for _, c := range certs {
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if c.IsCA && !showCA {
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continue
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}
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fmt.Printf("----------\n")
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if c.IsCA {
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fmt.Println("！这是一个CA证书！")
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}
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fmt.Printf("证书基础信息: %+v\n", c.Subject)
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fmt.Printf("证书颁发者: %+v\n", c.Issuer)
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fmt.Printf("证书生效时间: %+v 距今：%.1f天\n", c.NotBefore.In(time.Local), time.Since(c.NotBefore).Hours()/24)
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fmt.Printf("证书过期时间: %+v 剩余：%.1f天\n", c.NotAfter.In(time.Local), c.NotAfter.Sub(time.Now()).Hours()/24)
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fmt.Printf("证书序列号: %s\n", c.SerialNumber.Text(16))
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fmt.Printf("证书签名算法: %s\n", c.SignatureAlgorithm)
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fmt.Printf("证书公钥算法: %s\n", c.PublicKeyAlgorithm)
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switch pub := c.PublicKey.(type) {
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case *rsa.PublicKey:
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fmt.Printf("RSA公钥位数: %d\n", pub.Size()*8) // RSA公钥的位数
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fmt.Printf("RSA公钥指数: %d\n", pub.E) // RSA公钥的指数
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case *ecdsa.PublicKey:
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fmt.Printf("ECDSA Curve位数: %d\n", pub.Curve.Params().BitSize) // ECDSA公钥的位数
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}
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if len(c.DNSNames) != 0 {
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fmt.Printf("可选使用的DNS: %s\n", strings.Join(c.DNSNames, ", "))
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}
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if len(c.IPAddresses) != 0 {
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ipAddr := ""
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for _, ip := range c.IPAddresses {
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ipAddr += ip.String() + ", "
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}
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ipAddr = ipAddr[:len(ipAddr)-2]
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fmt.Printf("可选使用的IP: %s\n", ipAddr)
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}
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if len(c.EmailAddresses) != 0 {
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fmt.Printf("可选使用的Email: %s\n", strings.Join(c.EmailAddresses, ", "))
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}
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if len(c.URIs) != 0 {
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fmt.Printf("可选使用的URI: %v\n", c.URIs)
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}
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if len(c.PermittedDNSDomains) != 0 {
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fmt.Printf("批准使用的DNS: %s\n", strings.Join(c.PermittedDNSDomains, ", "))
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}
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if len(c.ExcludedDNSDomains) != 0 {
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fmt.Printf("禁止使用的DNS: %s\n", strings.Join(c.ExcludedDNSDomains, ", "))
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}
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if len(c.PermittedIPRanges) != 0 {
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ipRange := ""
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for _, ip := range c.PermittedIPRanges {
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ipRange += ip.String() + ", "
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}
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ipRange = ipRange[:len(ipRange)-2]
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fmt.Printf("批准使用的IP: %s\n", ipRange)
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}
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if len(c.ExcludedIPRanges) != 0 {
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ipRange := ""
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for _, ip := range c.ExcludedIPRanges {
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ipRange += ip.String() + ", "
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}
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ipRange = ipRange[:len(ipRange)-2]
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fmt.Printf("禁止使用的IP: %s\n", ipRange)
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}
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if len(c.PermittedEmailAddresses) != 0 {
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fmt.Printf("批准使用的Email: %s\n", strings.Join(c.PermittedEmailAddresses, ", "))
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}
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if len(c.ExcludedEmailAddresses) != 0 {
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fmt.Printf("禁止使用的Email: %s\n", strings.Join(c.ExcludedEmailAddresses, ", "))
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}
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if len(c.PermittedURIDomains) != 0 {
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fmt.Printf("批准使用的URI: %s\n", strings.Join(c.PermittedURIDomains, ", "))
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}
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if len(c.ExcludedURIDomains) != 0 {
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fmt.Printf("禁止使用的URI: %s\n", strings.Join(c.ExcludedURIDomains, ", "))
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}
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fmt.Printf("证书密钥用途: %s\n", strings.Join(KeyUsageToString(c.KeyUsage), ", "))
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extKeyUsage := []string{}
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for _, v := range c.ExtKeyUsage {
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switch v {
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case x509.ExtKeyUsageAny:
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extKeyUsage = append(extKeyUsage, "任何用途")
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case x509.ExtKeyUsageServerAuth:
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extKeyUsage = append(extKeyUsage, "服务器认证")
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case x509.ExtKeyUsageClientAuth:
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extKeyUsage = append(extKeyUsage, "客户端认证")
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case x509.ExtKeyUsageCodeSigning:
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extKeyUsage = append(extKeyUsage, "代码签名")
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case x509.ExtKeyUsageEmailProtection:
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extKeyUsage = append(extKeyUsage, "电子邮件保护")
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case x509.ExtKeyUsageIPSECEndSystem:
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||
extKeyUsage = append(extKeyUsage, "IPSEC终端系统")
|
||
case x509.ExtKeyUsageIPSECTunnel:
|
||
extKeyUsage = append(extKeyUsage, "IPSEC隧道")
|
||
case x509.ExtKeyUsageIPSECUser:
|
||
extKeyUsage = append(extKeyUsage, "IPSEC用户")
|
||
case x509.ExtKeyUsageTimeStamping:
|
||
extKeyUsage = append(extKeyUsage, "时间戳")
|
||
case x509.ExtKeyUsageOCSPSigning:
|
||
extKeyUsage = append(extKeyUsage, "OCSP签名")
|
||
case x509.ExtKeyUsageMicrosoftServerGatedCrypto:
|
||
extKeyUsage = append(extKeyUsage, "Microsoft服务器门控加密")
|
||
case x509.ExtKeyUsageNetscapeServerGatedCrypto:
|
||
extKeyUsage = append(extKeyUsage, "Netscape服务器门控加密")
|
||
case x509.ExtKeyUsageMicrosoftCommercialCodeSigning:
|
||
extKeyUsage = append(extKeyUsage, "Microsoft商业代码签名")
|
||
case x509.ExtKeyUsageMicrosoftKernelCodeSigning:
|
||
extKeyUsage = append(extKeyUsage, "Microsoft内核代码签名")
|
||
default:
|
||
extKeyUsage = append(extKeyUsage, fmt.Sprintf("未知用途(%d)", v))
|
||
}
|
||
}
|
||
fmt.Printf("证书扩展密钥用途: %s\n", strings.Join(extKeyUsage, ", "))
|
||
if len(c.CRLDistributionPoints) > 0 {
|
||
fmt.Printf("证书CRL分发点: %s\n", strings.Join(c.CRLDistributionPoints, ","))
|
||
}
|
||
if len(c.OCSPServer) > 0 {
|
||
fmt.Printf("证书OCSP服务器: %s\n", strings.Join(c.OCSPServer, ", "))
|
||
}
|
||
if len(c.SubjectKeyId) > 0 {
|
||
fmt.Printf("证书主题密钥ID: %x\n", c.SubjectKeyId)
|
||
}
|
||
if len(c.AuthorityKeyId) > 0 {
|
||
fmt.Printf("证书颁发者密钥ID: %x\n", c.AuthorityKeyId)
|
||
}
|
||
if c.MaxPathLenZero {
|
||
fmt.Println("证书最大路径长度为0")
|
||
}
|
||
if c.MaxPathLen > 0 {
|
||
fmt.Printf("证书最大路径长度: %d\n", c.MaxPathLen)
|
||
}
|
||
fmt.Printf("证书版本: %d\n----------\n", c.Version)
|
||
//fmt.Printf("证书扩展信息: %+v\n\n----------", c.Extensions)
|
||
}
|
||
if dumpPath != "" {
|
||
var data []byte
|
||
var name string
|
||
for _, c := range certs {
|
||
if name == "" {
|
||
name = c.Subject.CommonName + ".crt"
|
||
}
|
||
certBlock := &pem.Block{
|
||
Type: "CERTIFICATE",
|
||
Bytes: c.Raw,
|
||
}
|
||
data = append(data, pem.EncodeToMemory(certBlock)...)
|
||
}
|
||
err = os.WriteFile(filepath.Join(dumpPath, name), data, 0644)
|
||
if err != nil {
|
||
starlog.Errorln("failed to write file: " + err.Error())
|
||
return
|
||
}
|
||
starlog.Infoln("dumped to " + filepath.Join(dumpPath, name))
|
||
}
|
||
}
|
||
}
|
||
|
||
func KeyUsageToString(ku x509.KeyUsage) []string {
|
||
usages := []string{}
|
||
flags := []struct {
|
||
Flag x509.KeyUsage
|
||
Name string
|
||
}{
|
||
{x509.KeyUsageDigitalSignature, "数字签名"},
|
||
{x509.KeyUsageContentCommitment, "内容承诺"},
|
||
{x509.KeyUsageKeyEncipherment, "密钥加密"},
|
||
{x509.KeyUsageDataEncipherment, "数据加密"},
|
||
{x509.KeyUsageKeyAgreement, "密钥协商"},
|
||
{x509.KeyUsageCertSign, "证书签名"},
|
||
{x509.KeyUsageCRLSign, "CRL签名"},
|
||
{x509.KeyUsageEncipherOnly, "仅加密"},
|
||
{x509.KeyUsageDecipherOnly, "仅解密"},
|
||
}
|
||
|
||
for _, flag := range flags {
|
||
if ku&flag.Flag != 0 {
|
||
usages = append(usages, flag.Name)
|
||
}
|
||
}
|
||
|
||
return usages
|
||
}
|