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package staticfiles
import (
"net/url"
"testing"
)
func TestSanitizedPathJoin(t *testing.T) {
// For easy reference:
// %2E = .
// %2F = /
// %5C = \
for i, tc := range []struct {
inputRoot string
inputPath string
expect string
}{
{
inputPath: "",
expect: ".",
},
{
inputPath: "/",
expect: ".",
},
{
inputPath: "/foo",
expect: "foo",
},
{
inputPath: "/foo/bar",
expect: "foo/bar",
},
{
inputRoot: "/a",
inputPath: "/foo/bar",
expect: "/a/foo/bar",
},
{
inputPath: "/foo/../bar",
expect: "bar",
},
{
inputRoot: "/a/b",
inputPath: "/foo/../bar",
expect: "/a/b/bar",
},
{
inputRoot: "/a/b",
inputPath: "/..%2fbar",
expect: "/a/b/bar",
},
{
inputRoot: "/a/b",
inputPath: "/%2e%2e%2fbar",
expect: "/a/b/bar",
},
{
inputRoot: "/a/b",
inputPath: "/%2e%2e%2f%2e%2e%2f",
expect: "/a/b",
},
} {
// we don't *need* to use an actual parsed URL, but it
// adds some authenticity to the tests since real-world
// values will be coming in from URLs; thus, the test
// corpus can contain paths as encoded by clients, which
// more closely emulates the actual attack vector
u, err := url.Parse("http://test:9999" + tc.inputPath)
if err != nil {
t.Fatalf("Test %d: invalid URL: %v", i, err)
}
actual := sanitizedPathJoin(tc.inputRoot, u.Path)
if actual != tc.expect {
t.Errorf("Test %d: [%s %s] => %s (expected %s)", i, tc.inputRoot, tc.inputPath, actual, tc.expect)
}
}
}
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