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// Copyright 2018 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package cmd
import (
"errors"
"fmt"
"strings"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/private"
"github.com/urfave/cli/v2"
)
// CmdKeys represents the available keys sub-command
var CmdKeys = &cli.Command{
Name: "keys",
Usage: "(internal) Should only be called by SSH server",
Description: "Queries the Forgejo database to get the authorized command for a given ssh key fingerprint",
Before: PrepareConsoleLoggerLevel(log.FATAL),
Action: runKeys,
Flags: []cli.Flag{
&cli.StringFlag{
Name: "expected",
Aliases: []string{"e"},
Value: "git",
Usage: "Expected user for whom provide key commands",
},
&cli.StringFlag{
Name: "username",
Aliases: []string{"u"},
Value: "",
Usage: "Username trying to log in by SSH",
},
&cli.StringFlag{
Name: "type",
Aliases: []string{"t"},
Value: "",
Usage: "Type of the SSH key provided to the SSH Server (requires content to be provided too)",
},
&cli.StringFlag{
Name: "content",
Aliases: []string{"k"},
Value: "",
Usage: "Base64 encoded content of the SSH key provided to the SSH Server (requires type to be provided too)",
},
},
}
func runKeys(c *cli.Context) error {
if !c.IsSet("username") {
return errors.New("No username provided")
}
// Check username matches the expected username
if strings.TrimSpace(c.String("username")) != strings.TrimSpace(c.String("expected")) {
return nil
}
content := ""
if c.IsSet("type") && c.IsSet("content") {
content = fmt.Sprintf("%s %s", strings.TrimSpace(c.String("type")), strings.TrimSpace(c.String("content")))
}
if content == "" {
return errors.New("No key type and content provided")
}
ctx, cancel := installSignals()
defer cancel()
setup(ctx, c.Bool("debug"))
authorizedString, extra := private.AuthorizedPublicKeyByContent(ctx, content)
// do not use handleCliResponseExtra or cli.NewExitError, if it exists immediately, it breaks some tests like Test_CmdKeys
if extra.Error != nil {
return extra.Error
}
_, _ = fmt.Fprintln(c.App.Writer, strings.TrimSpace(authorizedString.Text))
return nil
}
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