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os: fix UserConfigDir and UserCacheDir don't check relative paths

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This commit is contained in:
rhysd 2024-07-17 02:47:22 +09:00
parent 959b3fd426
commit c03f371a04
2 changed files with 62 additions and 4 deletions
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12
src/os/file.go
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@ -472,8 +472,8 @@ func TempDir() string {
// On Windows, it returns %LocalAppData%.
// On Plan 9, it returns $home/lib/cache.
//
// If the location cannot be determined (for example, $HOME is not defined),
// then it will return an error.
// If the location cannot be determined (for example, $HOME is not defined) or
// the path in $XDG_CACHE_HOME is relative, then it will return an error.
func UserCacheDir() (string, error) {
var dir string
@ -506,6 +506,8 @@ func UserCacheDir() (string, error) {
return "", errors.New("neither $XDG_CACHE_HOME nor $HOME are defined")
}
dir += "/.cache"
} else if !filepathlite.IsAbs(dir) {
return "", errors.New("path in $XDG_CACHE_HOME is relative")
}
}
@ -523,8 +525,8 @@ func UserCacheDir() (string, error) {
// On Windows, it returns %AppData%.
// On Plan 9, it returns $home/lib.
//
// If the location cannot be determined (for example, $HOME is not defined),
// then it will return an error.
// If the location cannot be determined (for example, $HOME is not defined) or
// the path in $XDG_CONFIG_HOME is relative, then it will return an error.
func UserConfigDir() (string, error) {
var dir string
@ -557,6 +559,8 @@ func UserConfigDir() (string, error) {
return "", errors.New("neither $XDG_CONFIG_HOME nor $HOME are defined")
}
dir += "/.config"
} else if !filepathlite.IsAbs(dir) {
return "", errors.New("path in $XDG_CONFIG_HOME is relative")
}
}

54
src/os/os_test.go
View File

@ -2817,6 +2817,33 @@ func TestUserCacheDir(t *testing.T) {
}
}
func TestUserCacheDirXDGConfigDirEnvVar(t *testing.T) {
switch runtime.GOOS {
case "windows", "darwin", "plan9":
t.Skip("$XDG_CACHE_HOME is effective only on Unix systems")
}
wd, err := Getwd()
if err != nil {
t.Fatal(err)
}
t.Setenv("XDG_CACHE_HOME", wd)
dir, err := UserCacheDir()
if err != nil {
t.Fatal(err)
}
if dir != wd {
t.Fatalf("UserCacheDir returned %q; want the value of $XDG_CACHE_HOME %q", dir, wd)
}
t.Setenv("XDG_CACHE_HOME", "some-dir")
_, err = UserCacheDir()
if err == nil {
t.Fatal("UserCacheDir succeeded though $XDG_CACHE_HOME contains a relative path")
}
}
func TestUserConfigDir(t *testing.T) {
t.Parallel()
@ -2841,6 +2868,33 @@ func TestUserConfigDir(t *testing.T) {
}
}
func TestUserConfigDirXDGConfigDirEnvVar(t *testing.T) {
switch runtime.GOOS {
case "windows", "darwin", "plan9":
t.Skip("$XDG_CONFIG_HOME is effective only on Unix systems")
}
wd, err := Getwd()
if err != nil {
t.Fatal(err)
}
t.Setenv("XDG_CONFIG_HOME", wd)
dir, err := UserConfigDir()
if err != nil {
t.Fatal(err)
}
if dir != wd {
t.Fatalf("UserConfigDir returned %q; want the value of $XDG_CONFIG_HOME %q", dir, wd)
}
t.Setenv("XDG_CONFIG_HOME", "some-dir")
_, err = UserConfigDir()
if err == nil {
t.Fatal("UserConfigDir succeeded though $XDG_CONFIG_HOME contains a relative path")
}
}
func TestUserHomeDir(t *testing.T) {
t.Parallel()