1 files changed, 30 insertions, 0 deletions
diff --git a/src/git_tftpd/backend.py b/src/git_tftpd/backend.py
new file mode 100644
index 0000000..6fae5bd
--- /dev/null
+++ b/src/git_tftpd/backend.py
@@ -0,0 +1,30 @@
+from .writer import GitWriter
+
+from tftp.backend import IBackend
+from tftp.errors import Unsupported, AccessViolation
+from tftp.util import deferred
+
+from twisted.python.context import get
+from twisted.python.filepath import FilePath, InsecurePath
+
+from zope import interface
+
+
+class GitBackend(object):
+    interface.implements(IBackend)
+
+    def __init__(self, base_path):
+        self.base_path = base_path
+        self.base = FilePath(base_path)
+
+    @deferred
+    def get_reader(self,  file_name):
+        raise Unsupported("Reading not supported")
+
+    @deferred
+    def get_writer(self, file_name):
+        try:
+            target_path = self.base.descendant(file_name.split("/"))
+        except InsecurePath, e:
+            raise AccessViolation("Insecure path: %s" % e)
+        return GitWriter(target_path, self.base_path, get('remote'))