Fix the management of paths

radicale/pathutils.py

@@ -24,71 +24,3 @@ import posixpath
 from . import log
 
 
-def sanitize_path(path):
-    """Make path absolute with leading slash to prevent access to other data.
-
-    Preserve a potential trailing slash.
-
-    """
-    trailing_slash = "/" if path.endswith("/") else ""
-    path = posixpath.normpath(path)
-    new_path = "/"
-    for part in path.split("/"):
-        if not part or part in (".", ".."):
-            continue
-        new_path = posixpath.join(new_path, part)
-    trailing_slash = "" if new_path.endswith("/") else trailing_slash
-    return new_path + trailing_slash
-
-
-def is_safe_path_component(path):
-    """Check if path is a single component of a POSIX path.
-
-    Check that the path is safe to join too.
-
-    """
-    if not path:
-        return False
-    if posixpath.split(path)[0]:
-        return False
-    if path in (".", ".."):
-        return False
-    return True
-
-
-def is_safe_filesystem_path_component(path):
-    """Check if path is a single component of a filesystem path.
-
-    Check that the path is safe to join too.
-
-    """
-    if not path:
-        return False
-    drive, _ = os.path.splitdrive(path)
-    if drive:
-        return False
-    head, _ = os.path.split(path)
-    if head:
-        return False
-    if path in (os.curdir, os.pardir):
-        return False
-    return True
-
-
-def path_to_filesystem(path, base_folder):
-    """Convert path to a local filesystem path relative to base_folder.
-
-    Conversion is done in a secure manner, or raises ``ValueError``.
-
-    """
-    sane_path = sanitize_path(path).strip("/")
-    safe_path = base_folder
-    if not sane_path:
-        return safe_path
-    for part in sane_path.split("/"):
-        if not is_safe_filesystem_path_component(part):
-            log.LOGGER.debug(
-                "Can't translate path safely to filesystem: %s", path)
-            raise ValueError("Unsafe path")
-        safe_path = os.path.join(safe_path, part)
-    return safe_path