forgejo/modules/setting/path.go
wxiaoguang fa0b5b14c2
Make "install page" respect environment config (#25648)
Replace #25580

Fix #19453

The problem was: when users set "GITEA__XXX__YYY" , the "install page"
doesn't respect it.

So, to make the result consistent and avoid surprising end users, now
the "install page" also writes the environment variables to the config
file.

And, to make things clear, there are enough messages on the UI to tell
users what will happen.

There are some necessary/related changes to `environment-to-ini.go`:

* The "--clear" flag is removed and it was incorrectly written there.
The "clear" operation should be done if INSTALL_LOCK=true
* The "--prefix" flag is removed because it's never used, never
documented and it only causes inconsistent behavior.


![image](https://github.com/go-gitea/gitea/assets/2114189/12778ee4-3fb5-4664-a73a-41ebbd77cd5b)
2023-07-09 22:43:37 +00:00

198 lines
5.5 KiB
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package setting
import (
"errors"
"os"
"os/exec"
"path/filepath"
"strings"
"code.gitea.io/gitea/modules/log"
)
var (
// AppPath represents the path to the gitea binary
AppPath string
// AppWorkPath is the "working directory" of Gitea. It maps to the environment variable GITEA_WORK_DIR.
// If that is not set it is the default set here by the linker or failing that the directory of AppPath.
// It is used as the base path for several other paths.
AppWorkPath string
CustomPath string // Custom directory path. Env: GITEA_CUSTOM
CustomConf string
appWorkPathBuiltin string
customPathBuiltin string
customConfBuiltin string
AppWorkPathMismatch bool
)
func getAppPath() (string, error) {
var appPath string
var err error
if IsWindows && filepath.IsAbs(os.Args[0]) {
appPath = filepath.Clean(os.Args[0])
} else {
appPath, err = exec.LookPath(os.Args[0])
}
if err != nil {
if !errors.Is(err, exec.ErrDot) {
return "", err
}
appPath, err = filepath.Abs(os.Args[0])
}
if err != nil {
return "", err
}
appPath, err = filepath.Abs(appPath)
if err != nil {
return "", err
}
// Note: (legacy code) we don't use path.Dir here because it does not handle case which path starts with two "/" in Windows: "//psf/Home/..."
return strings.ReplaceAll(appPath, "\\", "/"), err
}
func init() {
var err error
if AppPath, err = getAppPath(); err != nil {
log.Fatal("Failed to get app path: %v", err)
}
if AppWorkPath == "" {
AppWorkPath = filepath.Dir(AppPath)
}
appWorkPathBuiltin = AppWorkPath
customPathBuiltin = CustomPath
customConfBuiltin = CustomConf
}
type ArgWorkPathAndCustomConf struct {
WorkPath string
CustomPath string
CustomConf string
}
type stringWithDefault struct {
Value string
IsSet bool
}
func (s *stringWithDefault) Set(v string) {
s.Value = v
s.IsSet = true
}
// InitWorkPathAndCommonConfig will set AppWorkPath, CustomPath and CustomConf, init default config provider by CustomConf and load common settings,
func InitWorkPathAndCommonConfig(getEnvFn func(name string) string, args ArgWorkPathAndCustomConf) {
InitWorkPathAndCfgProvider(getEnvFn, args)
LoadCommonSettings()
}
// InitWorkPathAndCfgProvider will set AppWorkPath, CustomPath and CustomConf, init default config provider by CustomConf
func InitWorkPathAndCfgProvider(getEnvFn func(name string) string, args ArgWorkPathAndCustomConf) {
tryAbsPath := func(paths ...string) string {
s := paths[len(paths)-1]
for i := len(paths) - 2; i >= 0; i-- {
if filepath.IsAbs(s) {
break
}
s = filepath.Join(paths[i], s)
}
return s
}
var err error
tmpWorkPath := stringWithDefault{Value: appWorkPathBuiltin}
if tmpWorkPath.Value == "" {
tmpWorkPath.Value = filepath.Dir(AppPath)
}
tmpCustomPath := stringWithDefault{Value: customPathBuiltin}
if tmpCustomPath.Value == "" {
tmpCustomPath.Value = "custom"
}
tmpCustomConf := stringWithDefault{Value: customConfBuiltin}
if tmpCustomConf.Value == "" {
tmpCustomConf.Value = "conf/app.ini"
}
readFromEnv := func() {
envWorkPath := getEnvFn("GITEA_WORK_DIR")
if envWorkPath != "" {
tmpWorkPath.Set(envWorkPath)
if !filepath.IsAbs(tmpWorkPath.Value) {
log.Fatal("GITEA_WORK_DIR (work path) must be absolute path")
}
}
envCustomPath := getEnvFn("GITEA_CUSTOM")
if envCustomPath != "" {
tmpCustomPath.Set(envCustomPath)
if !filepath.IsAbs(tmpCustomPath.Value) {
log.Fatal("GITEA_CUSTOM (custom path) must be absolute path")
}
}
}
readFromArgs := func() {
if args.WorkPath != "" {
tmpWorkPath.Set(args.WorkPath)
if !filepath.IsAbs(tmpWorkPath.Value) {
log.Fatal("--work-path must be absolute path")
}
}
if args.CustomPath != "" {
tmpCustomPath.Set(args.CustomPath) // if it is not abs, it will be based on work-path, it shouldn't happen
if !filepath.IsAbs(tmpCustomPath.Value) {
log.Error("--custom-path must be absolute path")
}
}
if args.CustomConf != "" {
tmpCustomConf.Set(args.CustomConf)
if !filepath.IsAbs(tmpCustomConf.Value) {
// the config path can be relative to the real current working path
if tmpCustomConf.Value, err = filepath.Abs(tmpCustomConf.Value); err != nil {
log.Fatal("Failed to get absolute path of config %q: %v", tmpCustomConf.Value, err)
}
}
}
}
readFromEnv()
readFromArgs()
if !tmpCustomConf.IsSet {
tmpCustomConf.Set(tryAbsPath(tmpWorkPath.Value, tmpCustomPath.Value, tmpCustomConf.Value))
}
// only read the config but do not load/init anything more, because the AppWorkPath and CustomPath are not ready
InitCfgProvider(tmpCustomConf.Value)
if HasInstallLock(CfgProvider) {
ClearEnvConfigKeys() // if the instance has been installed, do not pass the environment variables to sub-processes
}
configWorkPath := ConfigSectionKeyString(CfgProvider.Section(""), "WORK_PATH")
if configWorkPath != "" {
if !filepath.IsAbs(configWorkPath) {
log.Fatal("WORK_PATH in %q must be absolute path", configWorkPath)
}
configWorkPath = filepath.Clean(configWorkPath)
if tmpWorkPath.Value != "" && (getEnvFn("GITEA_WORK_DIR") != "" || args.WorkPath != "") {
fi1, err1 := os.Stat(tmpWorkPath.Value)
fi2, err2 := os.Stat(configWorkPath)
if err1 != nil || err2 != nil || !os.SameFile(fi1, fi2) {
AppWorkPathMismatch = true
}
}
tmpWorkPath.Set(configWorkPath)
}
tmpCustomPath.Set(tryAbsPath(tmpWorkPath.Value, tmpCustomPath.Value))
AppWorkPath = tmpWorkPath.Value
CustomPath = tmpCustomPath.Value
CustomConf = tmpCustomConf.Value
}