Create AuthorizedKeysCommand (#5236)
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parent
00533d3870
commit
7d9a191a3c
7 changed files with 136 additions and 19 deletions
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@ -27,10 +27,14 @@ func argsSet(c *cli.Context, args ...string) error {
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}
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func initDB() error {
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return initDBDisableConsole(false)
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}
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func initDBDisableConsole(disableConsole bool) error {
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setting.NewContext()
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models.LoadConfigs()
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setting.NewXORMLogService(false)
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setting.NewXORMLogService(disableConsole)
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if err := models.SetEngine(); err != nil {
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return fmt.Errorf("models.SetEngine: %v", err)
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}
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85
cmd/keys.go
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85
cmd/keys.go
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@ -0,0 +1,85 @@
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// Copyright 2018 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package cmd
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import (
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"errors"
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"fmt"
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"strings"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/setting"
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"github.com/urfave/cli"
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)
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// CmdKeys represents the available keys sub-command
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var CmdKeys = cli.Command{
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Name: "keys",
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Usage: "This command queries the Gitea database to get the authorized command for a given ssh key fingerprint",
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Action: runKeys,
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "expected, e",
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Value: "git",
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Usage: "Expected user for whom provide key commands",
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},
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cli.StringFlag{
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Name: "username, u",
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Value: "",
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Usage: "Username trying to log in by SSH",
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},
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cli.StringFlag{
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Name: "type, t",
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Value: "",
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Usage: "Type of the SSH key provided to the SSH Server (requires content to be provided too)",
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},
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cli.StringFlag{
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Name: "content, k",
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Value: "",
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Usage: "Base64 encoded content of the SSH key provided to the SSH Server (requires type to be provided too)",
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},
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cli.StringFlag{
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Name: "config, c",
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Value: "custom/conf/app.ini",
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Usage: "Custom configuration file path",
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},
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},
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}
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func runKeys(c *cli.Context) error {
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if c.IsSet("config") {
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setting.CustomConf = c.String("config")
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}
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if !c.IsSet("username") {
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return errors.New("No username provided")
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}
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// Check username matches the expected username
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if strings.TrimSpace(c.String("username")) != strings.TrimSpace(c.String("expected")) {
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return nil
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}
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content := ""
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if c.IsSet("type") && c.IsSet("content") {
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content = fmt.Sprintf("%s %s", strings.TrimSpace(c.String("type")), strings.TrimSpace(c.String("content")))
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}
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if content == "" {
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return errors.New("No key type and content provided")
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}
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if err := initDBDisableConsole(true); err != nil {
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return err
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}
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publicKey, err := models.SearchPublicKeyByContent(content)
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if err != nil {
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return err
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}
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fmt.Println(publicKey.AuthorizedString())
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return nil
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}
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@ -154,6 +154,9 @@ SSH_PORT = 22
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SSH_LISTEN_PORT = %(SSH_PORT)s
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; Root path of SSH directory, default is '~/.ssh', but you have to use '/home/git/.ssh'.
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SSH_ROOT_PATH =
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; Gitea will create a authorized_keys file by default when it is not using the internal ssh server
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; If you intend to use the AuthorizedKeysCommand functionality then you should turn this off.
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SSH_CREATE_AUTHORIZED_KEYS_FILE = true
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; For the built-in SSH server, choose the ciphers to support for SSH connections,
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; for system SSH this setting has no effect
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SSH_SERVER_CIPHERS = aes128-ctr, aes192-ctr, aes256-ctr, aes128-gcm@openssh.com, arcfour256, arcfour128
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@ -163,3 +163,24 @@ for automatic deployments.
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- `gitea generate secret INTERNAL_TOKEN`
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- `gitea generate secret LFS_JWT_SECRET`
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- `gitea generate secret SECRET_KEY`
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#### keys
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Provides an SSHD AuthorizedKeysCommand. Needs to be configured in the sshd config file:
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```ini
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...
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# The value of -e and the AuthorizedKeysCommandUser should match the
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# username running gitea
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AuthorizedKeysCommandUser git
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AuthorizedKeysCommand /path/to/gitea keys -e git -u %u -t %t -k %k
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```
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The command will return the appropriate authorized_keys line for the
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provided key. You should also set the value
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`SSH_CREATE_AUTHORIZED_KEYS_FILE=false` in the `[server]` section of
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`app.ini`.
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NB: opensshd requires the gitea program to be owned by root and not
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writable by group or others. The program must be specified by an absolute
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path.
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2
main.go
2
main.go
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@ -13,6 +13,7 @@ import (
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"code.gitea.io/gitea/cmd"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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// register supported doc types
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_ "code.gitea.io/gitea/modules/markup/csv"
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_ "code.gitea.io/gitea/modules/markup/markdown"
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@ -48,6 +49,7 @@ arguments - which can alternatively be run by running the subcommand web.`
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cmd.CmdAdmin,
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cmd.CmdGenerate,
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cmd.CmdMigrate,
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cmd.CmdKeys,
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}
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app.Flags = append(app.Flags, cmd.CmdWeb.Flags...)
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app.Action = cmd.CmdWeb.Action
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@ -558,7 +558,7 @@ func DeletePublicKey(doer *User, id int64) (err error) {
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// outside any session scope independently.
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func RewriteAllPublicKeys() error {
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//Don't rewrite key if internal server
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if setting.SSH.StartBuiltinServer {
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if setting.SSH.StartBuiltinServer || !setting.SSH.CreateAuthorizedKeysFile {
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return nil
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}
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@ -134,6 +134,7 @@ var (
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AuthorizedKeysBackup bool `ini:"SSH_AUTHORIZED_KEYS_BACKUP"`
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MinimumKeySizeCheck bool `ini:"-"`
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MinimumKeySizes map[string]int `ini:"-"`
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CreateAuthorizedKeysFile bool `ini:"SSH_CREATE_AUTHORIZED_KEYS_FILE"`
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ExposeAnonymous bool `ini:"SSH_EXPOSE_ANONYMOUS"`
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}{
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Disabled: false,
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@ -863,6 +864,7 @@ func NewContext() {
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}
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}
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SSH.AuthorizedKeysBackup = sec.Key("SSH_AUTHORIZED_KEYS_BACKUP").MustBool(true)
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SSH.CreateAuthorizedKeysFile = sec.Key("SSH_CREATE_AUTHORIZED_KEYS_FILE").MustBool(true)
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SSH.ExposeAnonymous = sec.Key("SSH_EXPOSE_ANONYMOUS").MustBool(false)
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sec = Cfg.Section("server")
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