{"id":5660,"date":"2020-01-14T08:50:41","date_gmt":"2020-01-13T23:50:41","guid":{"rendered":"https:\/\/www.lancard.com\/blog\/?p=5660"},"modified":"2025-03-12T11:25:43","modified_gmt":"2025-03-12T02:25:43","slug":"go%e8%a8%80%e8%aa%9e%e3%81%ae%e3%81%8a%e5%8b%89%e5%bc%b7%e3%81%a7ssh%e3%82%af%e3%83%a9%e3%82%a4%e3%82%a2%e3%83%b3%e3%83%88","status":"publish","type":"post","link":"https:\/\/www.lancard.com\/blog\/2020\/01\/14\/go%e8%a8%80%e8%aa%9e%e3%81%ae%e3%81%8a%e5%8b%89%e5%bc%b7%e3%81%a7ssh%e3%82%af%e3%83%a9%e3%82%a4%e3%82%a2%e3%83%b3%e3%83%88\/","title":{"rendered":"Go\u8a00\u8a9e\u306e\u304a\u52c9\u5f37\u3067SSH\u30af\u30e9\u30a4\u30a2\u30f3\u30c8"},"content":{"rendered":"

\u6b21\u306e\u6848\u4ef6\u3067Go\u8a00\u8a9e\u3092\u4f7f\u3044\u305f\u3044\u3068\u601d\u3063\u3066\u52c9\u5f37\u3057\u3066\u3044\u308bmurave\u3055\u3093\u3001\u30b5\u30fc\u30d0\u30fc\u9593\u9023\u643a\u3067\u4f7f\u3046\u304b\u3082\u3057\u308c\u306a\u3044\u3068”golang.org\/x\/crypto\/ssh”\u3092\u4f7f\u7528\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u3092\u4f5c\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n

go\u3067ssh\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u5b9f\u88c5\u30e1\u30e2 – Qiita<\/a><\/p>\n

Golang\u3067\u30bf\u30fc\u30df\u30ca\u30eb\u63a5\u7d9a\u3067\u304d\u308bssh\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b3\u30de\u30f3\u30c9\u3092\u4f5c\u6210\u3059\u308b(\u5236\u5fa1\u30ad\u30fc\u5bfe\u5fdc) | \u4ffa\u7684\u5099\u5fd8\u9332 \u301c\u306a\u3093\u304b\u3044\u308d\u3044\u308d\u301c<\/a><\/p>\n

\u4e0a\u8a18\u306e\u8a18\u4e8b\u3092\u53c2\u8003\u306b\u3057\u3066SSH\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u66f8\u3044\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n

\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u306e\u89e3\u6790\u306b\u306fflag\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u4f7f\u7528\u3057\u3001\u516c\u958b\u9375\u8a8d\u8a3c\u306e\u307f\u5bfe\u5fdc\u3067\u3059\u3002<\/p>\n

<\/p>\n

\/\/ ssh\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30f3\u30d7\u30eb(\u9375\u30d5\u30a1\u30a4\u30eb\u3067\u306e\u63a5\u7d9a\u306e\u307f\u5bfe\u5fdc)\npackage main\n\nimport (\n    \"flag\"\n    \"fmt\"\n    \"io\/ioutil\"\n    \"log\"\n    \"os\"\n    \"os\/user\"\n    \"path\/filepath\"\n    \"strings\"\n\n    \"golang.org\/x\/crypto\/ssh\"\n    \"golang.org\/x\/crypto\/ssh\/terminal\"\n)\n\nfunc main() {\n    host, userName, absKeyPath := parseCommand()\n\n    auth := []ssh.AuthMethod{}\n\n    key, err := ioutil.ReadFile(absKeyPath)\n    fatalLogWhenErr(err, \"private key\")\n    signer, err := ssh.ParsePrivateKey(key)\n    fatalLogWhenErr(err, \"signer\")\n\n    auth = append(auth, ssh.PublicKeys(signer))\n\n    sshConfig := &ssh.ClientConfig{\n        User:            userName,\n        Auth:            auth,\n        HostKeyCallback: ssh.InsecureIgnoreHostKey(),\n    }\n    startSession(host, sshConfig)\n\n}\n\n\/\/ parseCommand \u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u3092\u30d1\u30fc\u30b9\u3059\u308b\nfunc parseCommand() (string, string, string) {\n    \/\/ \u30d8\u30eb\u30d7\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u30db\u30b9\u30c8\u306e\u66f8\u304d\u65b9\u3092\u8ffd\u52a0\n    flag.Usage = func() {\n        fmt.Fprintf(os.Stderr, \"%s hostname:22\\n\", os.Args[0])\n        flag.PrintDefaults()\n    }\n    flagUsername := flag.String(\"user\", \"\", \"user name (default:current user)\")\n    flagKey := flag.String(\"key\", \"~\/.ssh\/id_rsa\", \"private key\")\n\n    flag.Parse()\n    host := flag.Arg(0)\n    if host == \"\" {\n        flag.Usage()\n        os.Exit(1)\n    }\n\n    fmt.Println(*flagUsername, flag.Arg(0))\n    usr, err := user.Current()\n    fatalLogWhenErr(err, \"\")\n\n    userName := usr.Username\n    if *flagUsername != \"\" {\n        userName = *flagUsername\n    }\n    keyPath := *flagKey\n    var absKeyPath string\n    if keyPath[0:1] == \"~\" {\n        absKeyPath = strings.Replace(keyPath, \"~\", usr.HomeDir, 1)\n    } else {\n        var err error\n        absKeyPath, err = filepath.Abs(keyPath)\n        if err != nil {\n            log.Fatal(err)\n        }\n    }\n\n    return host, userName, absKeyPath\n}\n\n\/\/ startSession ssh\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u958b\u59cb\nfunc startSession(host string, sshConfig *ssh.ClientConfig) {\n    client, err := ssh.Dial(\"tcp\", host, sshConfig)\n    fatalLogWhenErr(err, \"dial\")\n\n    session, err := client.NewSession()\n    fatalLogWhenErr(err, \"new session\")\n    defer session.Close()\n\n    \/\/ \u30ad\u30fc\u5165\u529b\u3092\u63a5\u7d9a\u5148\u304c\u8a8d\u8b58\u3067\u304d\u308b\u5f62\u5f0f\u306b\u5909\u63db\n    fd := int(os.Stdin.Fd())\n    state, err := terminal.MakeRaw(fd)\n    fatalLogWhenErr(err, \"tarminal make raw\")\n    defer terminal.Restore(fd, state)\n\n    w, h, err := terminal.GetSize(fd)\n    fatalLogWhenErr(err, \"tarminal get size\")\n    termmodes := ssh.TerminalModes{\n        ssh.ECHO:          1,\n        ssh.TTY_OP_ISPEED: 14400,\n        ssh.TTY_OP_OSPEED: 14400,\n    }\n    term := os.Getenv(\"TERM\")\n    err = session.RequestPty(term, h, w, termmodes)\n    fatalLogWhenErr(err, \"session request pty\")\n\n    session.Stdout = os.Stdout\n    session.Stderr = os.Stderr\n    session.Stdin = os.Stdin\n\n    err = session.Shell()\n    fatalLogWhenErr(err, \"session shell\")\n\n    err = session.Wait()\n    fatalLogWhenErr(err, \"session wait\")\n}\n\n\/\/ fatalLogWhenErr err\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066error\u306e\u5834\u5408\u306b\u306ffatal log\u3092\u51fa\u529b\nfunc fatalLogWhenErr(err error, msg string) {\n    if err != nil {\n        if len(msg) > 0 {\n            log.Fatalf(\"%s error: %v\", msg, err)\n        } else {\n            log.Fatal(err)\n        }\n    }\n}\n\n<\/code><\/pre>\n
\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u3067\u666e\u901a\u306b\u4f7f\u3048\u307e\u3057\u305f(.\/ssh\u304c\u30d3\u30eb\u30c9\u3057\u305f\u30d0\u30a4\u30ca\u30ea\u3067hostname\u7b49\u306f\u96a0\u3057\u3066\u3044\u307e\u3059)<\/p>\n
$ .\/ssh\n.\/ssh hostname:22\n  -key string\n        private key (default \"~\/.ssh\/id_rsa\")\n  -user string\n        user name (default:current user)\n\n$ .\/ssh -user root ***.***.***.***:22\nLast login: Thu Jan  9 15:45:57 2020 from ***-**-**-***.***.***.**\n[root ~]# pwd\n\/root\n[root ~]# exit\nlogout\n\n<\/code><\/pre>\n\"Facebook\"<\/a>\"twitter\"<\/a>\"linkedin\"<\/a>\"tumblr\"<\/a>\"mail\"<\/a>","protected":false},"excerpt":{"rendered":"
\u6b21\u306e\u6848\u4ef6\u3067Go\u8a00\u8a9e\u3092\u4f7f\u3044\u305f\u3044\u3068\u601d\u3063\u3066\u52c9\u5f37\u3057\u3066\u3044\u308bmurave\u3055\u3093\u3001\u30b5\u30fc\u30d0\u30fc\u9593\u9023\u643a\u3067\u4f7f\u3046\u304b\u3082\u3057\u308c\u306a\u3044\u3068”golang.org\/x\/crypto\/ssh”\u3092\u4f7f\u7528\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u3092\u4f5c\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002 go […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[196],"tags":[198,197],"class_list":["post-5660","post","type-post","status-publish","format-standard","hentry","category-golang","tag-go","tag-ssh"],"_links":{"self":[{"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/posts\/5660","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/comments?post=5660"}],"version-history":[{"count":9,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/posts\/5660\/revisions"}],"predecessor-version":[{"id":5669,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/posts\/5660\/revisions\/5669"}],"wp:attachment":[{"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/media?parent=5660"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/categories?post=5660"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/tags?post=5660"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}