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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package fs_test
import (
. "io/fs"
"os"
"path"
"strings"
"testing"
)
var globTests = []struct {
fs FS
pattern, result string
}{
{os.DirFS("."), "glob.go", "glob.go"},
{os.DirFS("."), "gl?b.go", "glob.go"},
{os.DirFS("."), `gl\ob.go`, "glob.go"},
{os.DirFS("."), "*", "glob.go"},
{os.DirFS(".."), "*/glob.go", "fs/glob.go"},
}
func TestGlob(t *testing.T) {
for _, tt := range globTests {
matches, err := Glob(tt.fs, tt.pattern)
if err != nil {
t.Errorf("Glob error for %q: %s", tt.pattern, err)
continue
}
if !contains(matches, tt.result) {
t.Errorf("Glob(%#q) = %#v want %v", tt.pattern, matches, tt.result)
}
}
for _, pattern := range []string{"no_match", "../*/no_match", `\*`} {
matches, err := Glob(os.DirFS("."), pattern)
if err != nil {
t.Errorf("Glob error for %q: %s", pattern, err)
continue
}
if len(matches) != 0 {
t.Errorf("Glob(%#q) = %#v want []", pattern, matches)
}
}
}
func TestGlobError(t *testing.T) {
bad := []string{`[]`, `nonexist/[]`}
for _, pattern := range bad {
_, err := Glob(os.DirFS("."), pattern)
if err != path.ErrBadPattern {
t.Errorf("Glob(fs, %#q) returned err=%v, want path.ErrBadPattern", pattern, err)
}
}
}
func TestCVE202230630(t *testing.T) {
// Prior to CVE-2022-30630, a stack exhaustion would occur given a large
// number of separators. There is now a limit of 10,000.
_, err := Glob(os.DirFS("."), "/*"+strings.Repeat("/", 10001))
if err != path.ErrBadPattern {
t.Fatalf("Glob returned err=%v, want %v", err, path.ErrBadPattern)
}
}
// contains reports whether vector contains the string s.
func contains(vector []string, s string) bool {
for _, elem := range vector {
if elem == s {
return true
}
}
return false
}
type globOnly struct{ GlobFS }
func (globOnly) Open(name string) (File, error) { return nil, ErrNotExist }
func TestGlobMethod(t *testing.T) {
check := func(desc string, names []string, err error) {
t.Helper()
if err != nil || len(names) != 1 || names[0] != "hello.txt" {
t.Errorf("Glob(%s) = %v, %v, want %v, nil", desc, names, err, []string{"hello.txt"})
}
}
// Test that ReadDir uses the method when present.
names, err := Glob(globOnly{testFsys}, "*.txt")
check("readDirOnly", names, err)
// Test that ReadDir uses Open when the method is not present.
names, err = Glob(openOnly{testFsys}, "*.txt")
check("openOnly", names, err)
}
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