1 files changed, 57 insertions, 0 deletions
diff --git a/tools/mergetools.py b/tools/mergetools.py
new file mode 100644
index 0000000..c25214c
--- /dev/null
+++ b/tools/mergetools.py
@@ -0,0 +1,57 @@
+# Copyright (c) 2014, NORDUnet A/S.
+# See LICENSE for licensing information.
+import base64
+import sys
+import struct
+from certtools import get_leaf_hash
+
+def parselogrow(row):
+    return base64.b16decode(row)
+
+def get_logorder(filename):
+    f = open(filename, "r")
+    return [parselogrow(row.rstrip()) for row in f]
+
+def read_chain(chainsdir, key):
+    filename = base64.b16encode(key)
+    path = chainsdir + "/" + filename[0:2] + "/" + filename[2:4] + "/" + filename[4:6]
+    try:
+        f = open(path + "/" + filename, "r")
+    except IOError, e:
+        f = open(chainsdir + "/" + filename, "r")
+    value = f.read()
+    f.close()
+    return value
+
+def unpack_entry(entry):
+    pieces = []
+    while len(entry):
+        (length,) = struct.unpack(">I", entry[0:4])
+        data = entry[4:4+length]
+        entry = entry[4+length:]
+        pieces.append(data)
+    return pieces
+
+def verify_entry(verifycert, entry, hash):
+    unpacked = unpack_entry(entry)
+    mtl = unpacked[0]
+    assert hash == get_leaf_hash(mtl)
+    s = struct.pack(">I", len(entry)) + entry
+    try:
+        verifycert.stdin.write(s)
+    except IOError, e:
+        sys.stderr.write("merge: unable to write to verifycert process: ")
+        while 1:
+            line = verifycert.stdout.readline()
+            if line:
+                sys.stderr.write(line)
+            else:
+                sys.exit(1)
+    result_length_packed = verifycert.stdout.read(4)
+    (result_length,) = struct.unpack(">I", result_length_packed)
+    result = verifycert.stdout.read(result_length)
+    assert len(result) == result_length
+    (error_code,) = struct.unpack("B", result[0:1])
+    if error_code != 0:
+        print >>sys.stderr, result[1:]
+        sys.exit(1)