drive: rewrite LOCK paths

Fixes #12097

Signed-off-by: Percy Wegmann <percy@tailscale.com>
This commit is contained in:
Percy Wegmann
2024-05-14 20:30:02 -05:00
committed by Percy Wegmann
parent 87f00d76c4
commit 59848fe14b
6 changed files with 380 additions and 87 deletions
+228 -5
View File
@@ -14,6 +14,8 @@ import (
"os"
"path"
"path/filepath"
"regexp"
"runtime"
"slices"
"strings"
"sync"
@@ -30,14 +32,29 @@ import (
const (
domain = `test$%domain.com`
remote1 = `rem ote$%1`
remote2 = `_rem ote$%2`
share11 = `sha re$%11`
share12 = `_sha re$%12`
file111 = `fi le$%111.txt`
remote1 = `rem ote$%<>1`
remote2 = `_rem ote$%<>2`
share11 = `sha re$%<>11`
share12 = `_sha re$%<>12`
file112 = `file112.txt`
)
var (
file111 = `fi le$%<>111.txt`
)
func init() {
if runtime.GOOS == "windows" {
// file with less than and greater than doesn't work on Windows
file111 = `fi le$%111.txt`
}
}
var (
lockRootRegex = regexp.MustCompile(`<D:lockroot><D:href>/?([^<]*)/?</D:href>`)
lockTokenRegex = regexp.MustCompile(`<D:locktoken><D:href>([0-9]+)/?</D:href>`)
)
func init() {
// set AllowShareAs() to false so that we don't try to use sub-processes
// for access files on disk.
@@ -145,6 +162,206 @@ func TestSecretTokenAuth(t *testing.T) {
}
}
func TestLOCK(t *testing.T) {
s := newSystem(t)
s.addRemote(remote1)
s.addShare(remote1, share11, drive.PermissionReadWrite)
s.writeFile("writing file to read/write remote should succeed", remote1, share11, file111, "hello world", true)
client := &http.Client{
Transport: &http.Transport{DisableKeepAlives: true},
}
u := fmt.Sprintf("http://%s/%s/%s/%s/%s",
s.local.l.Addr(),
url.PathEscape(domain),
url.PathEscape(remote1),
url.PathEscape(share11),
url.PathEscape(file111))
// First acquire a lock with a short timeout
req, err := http.NewRequest("LOCK", u, strings.NewReader(lockBody))
if err != nil {
t.Fatal(err)
}
req.Header.Set("Depth", "infinity")
req.Header.Set("Timeout", "Second-1")
resp, err := client.Do(req)
if err != nil {
t.Fatal(err)
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
t.Fatalf("expected LOCK to succeed, but got status %d", resp.StatusCode)
}
body, err := io.ReadAll(resp.Body)
if err != nil {
t.Fatal(err)
}
submatches := lockRootRegex.FindStringSubmatch(string(body))
if len(submatches) != 2 {
t.Fatal("failed to find lockroot")
}
want := shared.EscapeForXML(pathTo(remote1, share11, file111))
got := submatches[1]
if got != want {
t.Fatalf("want lockroot %q, got %q", want, got)
}
submatches = lockTokenRegex.FindStringSubmatch(string(body))
if len(submatches) != 2 {
t.Fatal("failed to find locktoken")
}
lockToken := submatches[1]
ifHeader := fmt.Sprintf("<%s> (<%s>)", u, lockToken)
// Then refresh the lock with a longer timeout
req, err = http.NewRequest("LOCK", u, nil)
if err != nil {
t.Fatal(err)
}
req.Header.Set("Depth", "infinity")
req.Header.Set("Timeout", "Second-600")
req.Header.Set("If", ifHeader)
resp, err = client.Do(req)
if err != nil {
t.Fatal(err)
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
t.Fatalf("expected LOCK refresh to succeed, but got status %d", resp.StatusCode)
}
body, err = io.ReadAll(resp.Body)
if err != nil {
t.Fatal(err)
}
submatches = lockRootRegex.FindStringSubmatch(string(body))
if len(submatches) != 2 {
t.Fatal("failed to find lockroot after refresh")
}
want = shared.EscapeForXML(pathTo(remote1, share11, file111))
got = submatches[1]
if got != want {
t.Fatalf("want lockroot after refresh %q, got %q", want, got)
}
submatches = lockTokenRegex.FindStringSubmatch(string(body))
if len(submatches) != 2 {
t.Fatal("failed to find locktoken after refresh")
}
if submatches[1] != lockToken {
t.Fatalf("on refresh, lock token changed from %q to %q", lockToken, submatches[1])
}
// Then wait past the original timeout, then try to delete without the lock
// (should fail)
time.Sleep(1 * time.Second)
req, err = http.NewRequest("DELETE", u, nil)
if err != nil {
log.Fatal(err)
}
resp, err = client.Do(req)
if err != nil {
log.Fatal(err)
}
defer resp.Body.Close()
if resp.StatusCode != 423 {
t.Fatalf("deleting without lock token should fail with 423, but got %d", resp.StatusCode)
}
// Then delete with the lock (should succeed)
req, err = http.NewRequest("DELETE", u, nil)
if err != nil {
log.Fatal(err)
}
req.Header.Set("If", ifHeader)
resp, err = client.Do(req)
if err != nil {
log.Fatal(err)
}
defer resp.Body.Close()
if resp.StatusCode != 204 {
t.Fatalf("deleting with lock token should have succeeded with 204, but got %d", resp.StatusCode)
}
}
func TestUNLOCK(t *testing.T) {
s := newSystem(t)
s.addRemote(remote1)
s.addShare(remote1, share11, drive.PermissionReadWrite)
s.writeFile("writing file to read/write remote should succeed", remote1, share11, file111, "hello world", true)
client := &http.Client{
Transport: &http.Transport{DisableKeepAlives: true},
}
u := fmt.Sprintf("http://%s/%s/%s/%s/%s",
s.local.l.Addr(),
url.PathEscape(domain),
url.PathEscape(remote1),
url.PathEscape(share11),
url.PathEscape(file111))
// Acquire a lock
req, err := http.NewRequest("LOCK", u, strings.NewReader(lockBody))
if err != nil {
t.Fatal(err)
}
req.Header.Set("Depth", "infinity")
req.Header.Set("Timeout", "Second-600")
resp, err := client.Do(req)
if err != nil {
t.Fatal(err)
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
t.Fatalf("expected LOCK to succeed, but got status %d", resp.StatusCode)
}
body, err := io.ReadAll(resp.Body)
if err != nil {
t.Fatal(err)
}
submatches := lockTokenRegex.FindStringSubmatch(string(body))
if len(submatches) != 2 {
t.Fatal("failed to find locktoken")
}
lockToken := submatches[1]
// Release the lock
req, err = http.NewRequest("UNLOCK", u, nil)
if err != nil {
t.Fatal(err)
}
req.Header.Set("Lock-Token", fmt.Sprintf("<%s>", lockToken))
resp, err = client.Do(req)
if err != nil {
t.Fatal(err)
}
defer resp.Body.Close()
if resp.StatusCode != 204 {
t.Fatalf("expected UNLOCK to succeed with a 204, but got status %d", resp.StatusCode)
}
// Then delete without the lock (should succeed)
req, err = http.NewRequest("DELETE", u, nil)
if err != nil {
log.Fatal(err)
}
resp, err = client.Do(req)
if err != nil {
log.Fatal(err)
}
defer resp.Body.Close()
if resp.StatusCode != 204 {
t.Fatalf("deleting without lock should have succeeded with 204, but got %d", resp.StatusCode)
}
}
type local struct {
l net.Listener
fs *FileSystemForLocal
@@ -486,3 +703,9 @@ func (a *noopAuthenticator) Clone() gowebdav.Authenticator {
func (a *noopAuthenticator) Close() error {
return nil
}
const lockBody = `<?xml version="1.0" encoding="utf-8" ?>
<D:lockinfo xmlns:D='DAV:'>
<D:lockscope><D:exclusive/></D:lockscope>
<D:locktype><D:write/></D:locktype>
</D:lockinfo>`