gitea/cmd/doctor.go
zeripath d26885e2bf
Mulitple Gitea Doctor improvements (#10943)
* Add `gitea doctor --list` flag to list the checks that will be run, including those by default
* Add `gitea doctor --run` to run specific checks
* Add `gitea doctor --all` to run all checks
* Add db version checker
* Add non-default recalculate merge bases check/fixer to doctor
* Add hook checker (Fix #9878) and ensure hooks are executable (Fix #6319)
* Fix authorized_keys checker - slight change of functionality here because parsing the command is fragile and we should just check if the authorized_keys file is essentially the same as what gitea would produce. (This is still not perfect as order matters - we should probably just md5sum the two files.)
* Add SCRIPT_TYPE check (Fix #10977)
* Add `gitea doctor --fix` to attempt to fix what is possible to easily fix
* Add `gitea doctor --log-file` to set the log-file, be it a file, stdout or to switch off completely. (Fixes previously undetected bug with certain xorm logging configurations - see @6543 comment.)

Signed-off-by: Andrew Thornton <art27@cantab.net>
2020-04-06 11:44:47 +01:00

495 lines
15 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"
"bytes"
"context"
"fmt"
"io/ioutil"
golog "log"
"os"
"os/exec"
"path/filepath"
"strings"
"text/tabwriter"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/models/migrations"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/options"
"code.gitea.io/gitea/modules/repository"
"code.gitea.io/gitea/modules/setting"
"xorm.io/builder"
"github.com/urfave/cli"
)
// CmdDoctor represents the available doctor sub-command.
var CmdDoctor = cli.Command{
Name: "doctor",
Usage: "Diagnose problems",
Description: "A command to diagnose problems with the current Gitea instance according to the given configuration.",
Action: runDoctor,
Flags: []cli.Flag{
cli.BoolFlag{
Name: "list",
Usage: "List the available checks",
},
cli.BoolFlag{
Name: "default",
Usage: "Run the default checks (if neither --run or --all is set, this is the default behaviour)",
},
cli.StringSliceFlag{
Name: "run",
Usage: "Run the provided checks - (if --default is set, the default checks will also run)",
},
cli.BoolFlag{
Name: "all",
Usage: "Run all the available checks",
},
cli.BoolFlag{
Name: "fix",
Usage: "Automatically fix what we can",
},
cli.StringFlag{
Name: "log-file",
Usage: `Name of the log file (default: "doctor.log"). Set to "-" to output to stdout, set to "" to disable`,
},
},
}
type check struct {
title string
name string
isDefault bool
f func(ctx *cli.Context) ([]string, error)
abortIfFailed bool
skipDatabaseInit bool
}
// checklist represents list for all checks
var checklist = []check{
{
// NOTE: this check should be the first in the list
title: "Check paths and basic configuration",
name: "paths",
isDefault: true,
f: runDoctorPathInfo,
abortIfFailed: true,
skipDatabaseInit: true,
},
{
title: "Check Database Version",
name: "check-db",
isDefault: true,
f: runDoctorCheckDBVersion,
abortIfFailed: true,
},
{
title: "Check if OpenSSH authorized_keys file is up-to-date",
name: "authorized_keys",
isDefault: true,
f: runDoctorAuthorizedKeys,
},
{
title: "Check if SCRIPT_TYPE is available",
name: "script-type",
isDefault: false,
f: runDoctorScriptType,
},
{
title: "Check if hook files are up-to-date and executable",
name: "hooks",
isDefault: false,
f: runDoctorHooks,
},
{
title: "Recalculate merge bases",
name: "recalculate_merge_bases",
isDefault: false,
f: runDoctorPRMergeBase,
},
// more checks please append here
}
func runDoctor(ctx *cli.Context) error {
// Silence the default loggers
log.DelNamedLogger("console")
log.DelNamedLogger(log.DEFAULT)
// Now setup our own
logFile := ctx.String("log-file")
if !ctx.IsSet("log-file") {
logFile = "doctor.log"
}
if len(logFile) == 0 {
log.NewLogger(1000, "doctor", "console", `{"level":"NONE","stacktracelevel":"NONE","colorize":"%t"}`)
} else if logFile == "-" {
log.NewLogger(1000, "doctor", "console", `{"level":"trace","stacktracelevel":"NONE"}`)
} else {
log.NewLogger(1000, "doctor", "file", fmt.Sprintf(`{"filename":%q,"level":"trace","stacktracelevel":"NONE"}`, logFile))
}
// Finally redirect the default golog to here
golog.SetFlags(0)
golog.SetPrefix("")
golog.SetOutput(log.NewLoggerAsWriter("INFO", log.GetLogger(log.DEFAULT)))
if ctx.IsSet("list") {
w := tabwriter.NewWriter(os.Stdout, 0, 8, 0, '\t', 0)
_, _ = w.Write([]byte("Default\tName\tTitle\n"))
for _, check := range checklist {
if check.isDefault {
_, _ = w.Write([]byte{'*'})
}
_, _ = w.Write([]byte{'\t'})
_, _ = w.Write([]byte(check.name))
_, _ = w.Write([]byte{'\t'})
_, _ = w.Write([]byte(check.title))
_, _ = w.Write([]byte{'\n'})
}
return w.Flush()
}
var checks []check
if ctx.Bool("all") {
checks = checklist
} else if ctx.IsSet("run") {
addDefault := ctx.Bool("default")
names := ctx.StringSlice("run")
for i, name := range names {
names[i] = strings.ToLower(strings.TrimSpace(name))
}
for _, check := range checklist {
if addDefault && check.isDefault {
checks = append(checks, check)
continue
}
for _, name := range names {
if name == check.name {
checks = append(checks, check)
break
}
}
}
} else {
for _, check := range checklist {
if check.isDefault {
checks = append(checks, check)
}
}
}
dbIsInit := false
for i, check := range checks {
if !dbIsInit && !check.skipDatabaseInit {
// Only open database after the most basic configuration check
setting.EnableXORMLog = false
if err := initDBDisableConsole(true); 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
}
dbIsInit = true
}
fmt.Println("[", i+1, "]", check.title)
messages, err := check.f(ctx)
for _, message := range messages {
fmt.Println("-", message)
}
if err != nil {
fmt.Println("Error:", err)
if check.abortIfFailed {
return nil
}
} else {
fmt.Println("OK.")
}
fmt.Println()
}
return nil
}
func runDoctorPathInfo(ctx *cli.Context) ([]string, error) {
res := make([]string, 0, 10)
if fi, err := os.Stat(setting.CustomConf); err != nil || !fi.Mode().IsRegular() {
res = append(res, fmt.Sprintf("Failed to find configuration file at '%s'.", setting.CustomConf))
res = append(res, fmt.Sprintf("If you've never ran Gitea yet, this is normal and '%s' will be created for you on first run.", setting.CustomConf))
res = append(res, "Otherwise check that you are running this command from the correct path and/or provide a `--config` parameter.")
return res, fmt.Errorf("can't proceed without a configuration file")
}
setting.NewContext()
fail := false
check := func(name, path string, is_dir, required, is_write bool) {
res = append(res, fmt.Sprintf("%-25s '%s'", name+":", path))
fi, err := os.Stat(path)
if err != nil {
if os.IsNotExist(err) && ctx.Bool("fix") && is_dir {
if err := os.MkdirAll(path, 0777); err != nil {
res = append(res, fmt.Sprintf(" ERROR: %v", err))
fail = true
return
}
fi, err = os.Stat(path)
}
}
if err != nil {
if required {
res = append(res, fmt.Sprintf(" ERROR: %v", err))
fail = true
return
}
res = append(res, fmt.Sprintf(" NOTICE: not accessible (%v)", err))
return
}
if is_dir && !fi.IsDir() {
res = append(res, " ERROR: not a directory")
fail = true
return
} else if !is_dir && !fi.Mode().IsRegular() {
res = append(res, " ERROR: not a regular file")
fail = true
} else if is_write {
if err := runDoctorWritableDir(path); err != nil {
res = append(res, fmt.Sprintf(" ERROR: not writable: %v", err))
fail = true
}
}
}
// Note print paths inside quotes to make any leading/trailing spaces evident
check("Configuration File Path", setting.CustomConf, false, true, false)
check("Repository Root Path", setting.RepoRootPath, true, true, true)
check("Data Root Path", setting.AppDataPath, true, true, true)
check("Custom File Root Path", setting.CustomPath, true, false, false)
check("Work directory", setting.AppWorkPath, true, true, false)
check("Log Root Path", setting.LogRootPath, true, true, true)
if options.IsDynamic() {
// Do not check/report on StaticRootPath if data is embedded in Gitea (-tags bindata)
check("Static File Root Path", setting.StaticRootPath, true, true, false)
}
if fail {
return res, fmt.Errorf("please check your configuration file and try again")
}
return res, nil
}
func runDoctorWritableDir(path string) error {
// There's no platform-independent way of checking if a directory is writable
// https://stackoverflow.com/questions/20026320/how-to-tell-if-folder-exists-and-is-writable
tmpFile, err := ioutil.TempFile(path, "doctors-order")
if err != nil {
return err
}
if err := os.Remove(tmpFile.Name()); err != nil {
fmt.Printf("Warning: can't remove temporary file: '%s'\n", tmpFile.Name())
}
tmpFile.Close()
return nil
}
const tplCommentPrefix = `# gitea public key`
func runDoctorAuthorizedKeys(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 {
if ctx.Bool("fix") {
return []string{fmt.Sprintf("Error whilst opening authorized_keys: %v. Attempting regeneration", err)}, models.RewriteAllPublicKeys()
}
return nil, err
}
defer f.Close()
linesInAuthorizedKeys := map[string]bool{}
scanner := bufio.NewScanner(f)
for scanner.Scan() {
line := scanner.Text()
if strings.HasPrefix(line, tplCommentPrefix) {
continue
}
linesInAuthorizedKeys[line] = true
}
f.Close()
// now we regenerate and check if there are any lines missing
regenerated := &bytes.Buffer{}
if err := models.RegeneratePublicKeys(regenerated); err != nil {
return nil, err
}
scanner = bufio.NewScanner(regenerated)
for scanner.Scan() {
line := scanner.Text()
if strings.HasPrefix(line, tplCommentPrefix) {
continue
}
if ok := linesInAuthorizedKeys[line]; ok {
continue
}
if ctx.Bool("fix") {
return []string{"authorized_keys is out of date, attempting regeneration"}, models.RewriteAllPublicKeys()
}
return []string{"authorized_keys is out of date and should be regenerated with gitea admin regenerate keys"}, nil
}
return nil, nil
}
func runDoctorCheckDBVersion(ctx *cli.Context) ([]string, error) {
if err := models.NewEngine(context.Background(), migrations.EnsureUpToDate); err != nil {
if ctx.Bool("fix") {
return []string{fmt.Sprintf("WARN: Got Error %v during ensure up to date", err), "Attempting to migrate to the latest DB version to fix this."}, models.NewEngine(context.Background(), migrations.Migrate)
}
return nil, err
}
return nil, nil
}
func iterateRepositories(each func(*models.Repository) ([]string, error)) ([]string, error) {
results := []string{}
err := models.Iterate(
models.DefaultDBContext(),
new(models.Repository),
builder.Gt{"id": 0},
func(idx int, bean interface{}) error {
res, err := each(bean.(*models.Repository))
results = append(results, res...)
return err
},
)
return results, err
}
func iteratePRs(repo *models.Repository, each func(*models.Repository, *models.PullRequest) ([]string, error)) ([]string, error) {
results := []string{}
err := models.Iterate(
models.DefaultDBContext(),
new(models.PullRequest),
builder.Eq{"base_repo_id": repo.ID},
func(idx int, bean interface{}) error {
res, err := each(repo, bean.(*models.PullRequest))
results = append(results, res...)
return err
},
)
return results, err
}
func runDoctorHooks(ctx *cli.Context) ([]string, error) {
// Need to iterate across all of the repositories
return iterateRepositories(func(repo *models.Repository) ([]string, error) {
results, err := repository.CheckDelegateHooks(repo.RepoPath())
if err != nil {
return nil, err
}
if len(results) > 0 && ctx.Bool("fix") {
return []string{fmt.Sprintf("regenerated hooks for %s", repo.FullName())}, repository.CreateDelegateHooks(repo.RepoPath())
}
return results, nil
})
}
func runDoctorPRMergeBase(ctx *cli.Context) ([]string, error) {
numRepos := 0
numPRs := 0
numPRsUpdated := 0
results, err := iterateRepositories(func(repo *models.Repository) ([]string, error) {
numRepos++
return iteratePRs(repo, func(repo *models.Repository, pr *models.PullRequest) ([]string, error) {
numPRs++
results := []string{}
pr.BaseRepo = repo
repoPath := repo.RepoPath()
oldMergeBase := pr.MergeBase
if !pr.HasMerged {
var err error
pr.MergeBase, err = git.NewCommand("merge-base", "--", pr.BaseBranch, pr.GetGitRefName()).RunInDir(repoPath)
if err != nil {
var err2 error
pr.MergeBase, err2 = git.NewCommand("rev-parse", git.BranchPrefix+pr.BaseBranch).RunInDir(repoPath)
if err2 != nil {
results = append(results, fmt.Sprintf("WARN: Unable to get merge base for PR ID %d, #%d onto %s in %s/%s", pr.ID, pr.Index, pr.BaseBranch, pr.BaseRepo.OwnerName, pr.BaseRepo.Name))
log.Error("Unable to get merge base for PR ID %d, Index %d in %s/%s. Error: %v & %v", pr.ID, pr.Index, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, err, err2)
return results, nil
}
}
} else {
parentsString, err := git.NewCommand("rev-list", "--parents", "-n", "1", pr.MergedCommitID).RunInDir(repoPath)
if err != nil {
results = append(results, fmt.Sprintf("WARN: Unable to get parents for merged PR ID %d, #%d onto %s in %s/%s", pr.ID, pr.Index, pr.BaseBranch, pr.BaseRepo.OwnerName, pr.BaseRepo.Name))
log.Error("Unable to get parents for merged PR ID %d, Index %d in %s/%s. Error: %v", pr.ID, pr.Index, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, err)
return results, nil
}
parents := strings.Split(strings.TrimSpace(parentsString), " ")
if len(parents) < 2 {
return results, nil
}
args := append([]string{"merge-base", "--"}, parents[1:]...)
args = append(args, pr.GetGitRefName())
pr.MergeBase, err = git.NewCommand(args...).RunInDir(repoPath)
if err != nil {
results = append(results, fmt.Sprintf("WARN: Unable to get merge base for merged PR ID %d, #%d onto %s in %s/%s", pr.ID, pr.Index, pr.BaseBranch, pr.BaseRepo.OwnerName, pr.BaseRepo.Name))
log.Error("Unable to get merge base for merged PR ID %d, Index %d in %s/%s. Error: %v", pr.ID, pr.Index, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, err)
return results, nil
}
}
pr.MergeBase = strings.TrimSpace(pr.MergeBase)
if pr.MergeBase != oldMergeBase {
if ctx.Bool("fix") {
if err := pr.UpdateCols("merge_base"); err != nil {
return results, err
}
} else {
results = append(results, fmt.Sprintf("#%d onto %s in %s/%s: MergeBase should be %s but is %s", pr.Index, pr.BaseBranch, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, oldMergeBase, pr.MergeBase))
}
numPRsUpdated++
}
return results, nil
})
})
if ctx.Bool("fix") {
results = append(results, fmt.Sprintf("%d PR mergebases updated of %d PRs total in %d repos", numPRsUpdated, numPRs, numRepos))
} else {
results = append(results, fmt.Sprintf("%d PRs with incorrect mergebases of %d PRs total in %d repos", numPRsUpdated, numPRs, numRepos))
}
return results, err
}
func runDoctorScriptType(ctx *cli.Context) ([]string, error) {
path, err := exec.LookPath(setting.ScriptType)
if err != nil {
return []string{fmt.Sprintf("ScriptType %s is not on the current PATH", setting.ScriptType)}, err
}
return []string{fmt.Sprintf("ScriptType %s is on the current PATH at %s", setting.ScriptType, path)}, nil
}