diff options
Diffstat (limited to 'modules/setting/path.go')
| -rw-r--r-- | modules/setting/path.go | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/modules/setting/path.go b/modules/setting/path.go new file mode 100644 index 0000000..85d0e06 --- /dev/null +++ b/modules/setting/path.go @@ -0,0 +1,214 @@ +// 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: WORK_PATH in app.ini, "--work-path" flag, 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") + } + } + + envWorkPath = getEnvFn("FORGEJO_WORK_DIR") + if envWorkPath != "" { + tmpWorkPath.Set(envWorkPath) + if !filepath.IsAbs(tmpWorkPath.Value) { + log.Fatal("FORGEJO_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") + } + } + + envCustomPath = getEnvFn("FORGEJO_CUSTOM") + if envCustomPath != "" { + tmpCustomPath.Set(envCustomPath) + if !filepath.IsAbs(tmpCustomPath.Value) { + log.Fatal("FORGEJO_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") != "" || getEnvFn("FORGEJO_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 +} |