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forgejo/cmd/doctor.go
Lunny Xiao f69f5a9f10 Add a new command doctor to check if some wrong configurations on gitea instance (#9095)
* add doctor

* Add a new command doctor to check if some wrong configurations on gitea instance

* fix import

* use regex match authorized_keys on doctor

* Add documentation
2020-01-11 15:24:57 +01:00

130 lines
3.2 KiB
Go

// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package cmd
import (
"bufio"
"errors"
"fmt"
"os"
"os/exec"
"path/filepath"
"regexp"
"strings"
"code.gitea.io/gitea/modules/setting"
"github.com/urfave/cli"
)
// CmdDoctor represents the available doctor sub-command.
var CmdDoctor = cli.Command{
Name: "doctor",
Usage: "Diagnose the problems",
Description: "A command to diagnose the problems of current gitea instance according the given configuration.",
Action: runDoctor,
}
type check struct {
title string
f func(ctx *cli.Context) ([]string, error)
}
// checklist represents list for all checks
var checklist = []check{
{
title: "Check if OpenSSH authorized_keys file id correct",
f: runDoctorLocationMoved,
},
// more checks please append here
}
func runDoctor(ctx *cli.Context) error {
err := initDB()
fmt.Println("Using app.ini at", setting.CustomConf)
if err != nil {
fmt.Println(err)
fmt.Println("Check if you are using the right config file. You can use a --config directive to specify one.")
return nil
}
for i, check := range checklist {
fmt.Println("[", i+1, "]", check.title)
if messages, err := check.f(ctx); err != nil {
fmt.Println("Error:", err)
} else if len(messages) > 0 {
for _, message := range messages {
fmt.Println("-", message)
}
} else {
fmt.Println("OK.")
}
fmt.Println()
}
return nil
}
func exePath() (string, error) {
file, err := exec.LookPath(os.Args[0])
if err != nil {
return "", err
}
return filepath.Abs(file)
}
func runDoctorLocationMoved(ctx *cli.Context) ([]string, error) {
if setting.SSH.StartBuiltinServer || !setting.SSH.CreateAuthorizedKeysFile {
return nil, nil
}
fPath := filepath.Join(setting.SSH.RootPath, "authorized_keys")
f, err := os.Open(fPath)
if err != nil {
return nil, err
}
defer f.Close()
var firstline string
scanner := bufio.NewScanner(f)
for scanner.Scan() {
firstline = strings.TrimSpace(scanner.Text())
if len(firstline) == 0 || firstline[0] == '#' {
continue
}
break
}
// command="/Volumes/data/Projects/gitea/gitea/gitea --config
if len(firstline) > 0 {
exp := regexp.MustCompile(`^[ \t]*(?:command=")([^ ]+) --config='([^']+)' serv key-([^"]+)",(?:[^ ]+) ssh-rsa ([^ ]+) ([^ ]+)[ \t]*$`)
// command="/home/user/gitea --config='/home/user/etc/app.ini' serv key-999",option-1,option-2,option-n ssh-rsa public-key-value key-name
res := exp.FindStringSubmatch(firstline)
if res == nil {
return nil, errors.New("Unknow authorized_keys format")
}
giteaPath := res[1] // => /home/user/gitea
iniPath := res[2] // => /home/user/etc/app.ini
p, err := exePath()
if err != nil {
return nil, err
}
p, err = filepath.Abs(p)
if err != nil {
return nil, err
}
if len(giteaPath) > 0 && giteaPath != p {
return []string{fmt.Sprintf("Gitea exe path wants %s but %s on %s", p, giteaPath, fPath)}, nil
}
if len(iniPath) > 0 && iniPath != setting.CustomConf {
return []string{fmt.Sprintf("Gitea config path wants %s but %s on %s", setting.CustomConf, iniPath, fPath)}, nil
}
}
return nil, nil
}