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zip creation: avoid stat if not strictly required

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Signed-off-by: Nicola Murino <nicola.murino@gmail.com>
This commit is contained in:
Nicola Murino
2025-01-02 18:05:47 +01:00
parent a0f781aeef
commit b02b79fe6d
4 changed files with 29 additions and 23 deletions
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17
internal/httpd/api_utils.go
View File

@@ -384,7 +384,7 @@ func renderCompressedFiles(w http.ResponseWriter, conn *Connection, baseDir stri
for _, file := range files {
fullPath := util.CleanPath(path.Join(baseDir, file))
if err := addZipEntry(wr, conn, fullPath, baseDir, 0); err != nil {
if err := addZipEntry(wr, conn, fullPath, baseDir, nil, 0); err != nil {
if share != nil {
dataprovider.UpdateShareLastUse(share, -1) //nolint:errcheck
}
@@ -400,16 +400,19 @@ func renderCompressedFiles(w http.ResponseWriter, conn *Connection, baseDir stri
}
}
func addZipEntry(wr *zip.Writer, conn *Connection, entryPath, baseDir string, recursion int) error {
func addZipEntry(wr *zip.Writer, conn *Connection, entryPath, baseDir string, info os.FileInfo, recursion int) error {
if recursion >= util.MaxRecursion {
conn.Log(logger.LevelDebug, "unable to add zip entry %q, recursion too depth: %d", entryPath, recursion)
return util.ErrRecursionTooDeep
}
recursion++
info, err := conn.Stat(entryPath, 1)
if err != nil {
conn.Log(logger.LevelDebug, "unable to add zip entry %q, stat error: %v", entryPath, err)
return err
var err error
if info == nil {
info, err = conn.Stat(entryPath, 1)
if err != nil {
conn.Log(logger.LevelDebug, "unable to add zip entry %q, stat error: %v", entryPath, err)
return err
}
}
entryName, err := getZipEntryName(entryPath, baseDir)
if err != nil {
@@ -441,7 +444,7 @@ func addZipEntry(wr *zip.Writer, conn *Connection, entryPath, baseDir string, re
}
for _, info := range contents {
fullPath := util.CleanPath(path.Join(entryPath, info.Name()))
if err := addZipEntry(wr, conn, fullPath, baseDir, recursion); err != nil {
if err := addZipEntry(wr, conn, fullPath, baseDir, info, recursion); err != nil {
return err
}
}

14
internal/httpd/internal_test.go
View File

@@ -2291,14 +2291,14 @@ func TestZipErrors(t *testing.T) {
assert.Contains(t, err.Error(), "write error")
}
err = addZipEntry(wr, connection, "/"+filepath.Base(testDir), "/", 0)
err = addZipEntry(wr, connection, "/"+filepath.Base(testDir), "/", nil, 0)
if assert.Error(t, err) {
assert.Contains(t, err.Error(), "write error")
}
err = addZipEntry(wr, connection, "/"+filepath.Base(testDir), "/", 2000)
err = addZipEntry(wr, connection, "/"+filepath.Base(testDir), "/", nil, 2000)
assert.ErrorIs(t, err, util.ErrRecursionTooDeep)
err = addZipEntry(wr, connection, "/"+filepath.Base(testDir), path.Join("/", filepath.Base(testDir), "dir"), 0)
err = addZipEntry(wr, connection, "/"+filepath.Base(testDir), path.Join("/", filepath.Base(testDir), "dir"), nil, 0)
if assert.Error(t, err) {
assert.Contains(t, err.Error(), "is outside base dir")
}
@@ -2307,14 +2307,14 @@ func TestZipErrors(t *testing.T) {
err = os.WriteFile(testFilePath, util.GenerateRandomBytes(65535), os.ModePerm)
assert.NoError(t, err)
err = addZipEntry(wr, connection, path.Join("/", filepath.Base(testDir), filepath.Base(testFilePath)),
"/"+filepath.Base(testDir), 0)
"/"+filepath.Base(testDir), nil, 0)
if assert.Error(t, err) {
assert.Contains(t, err.Error(), "write error")
}
connection.User.Permissions["/"] = []string{dataprovider.PermListItems}
err = addZipEntry(wr, connection, path.Join("/", filepath.Base(testDir), filepath.Base(testFilePath)),
"/"+filepath.Base(testDir), 0)
"/"+filepath.Base(testDir), nil, 0)
assert.ErrorIs(t, err, os.ErrPermission)
// creating a virtual folder to a missing path stat is ok but readdir fails
@@ -2326,14 +2326,14 @@ func TestZipErrors(t *testing.T) {
})
connection.User = user
wr = zip.NewWriter(bytes.NewBuffer(make([]byte, 0)))
err = addZipEntry(wr, connection, user.VirtualFolders[0].VirtualPath, "/", 0)
err = addZipEntry(wr, connection, user.VirtualFolders[0].VirtualPath, "/", nil, 0)
assert.Error(t, err)
user.Filters.FilePatterns = append(user.Filters.FilePatterns, sdk.PatternsFilter{
Path: "/",
DeniedPatterns: []string{"*.zip"},
})
err = addZipEntry(wr, connection, "/"+filepath.Base(testDir), "/", 0)
err = addZipEntry(wr, connection, "/"+filepath.Base(testDir), "/", nil, 0)
assert.ErrorIs(t, err, os.ErrPermission)
err = os.RemoveAll(testDir)