From 8364712d93721816695b0faac8284307b6a9d43a Mon Sep 17 00:00:00 2001
From: Linus Nordberg <linus@nordu.net>
Date: Mon, 30 Jan 2017 16:28:38 +0100
Subject: Work with permdb too.

---
 .../light-system-test-prepare-merge-takeover.sh    |  1 +
 test/scripts/light-system-test.sh                  |  3 +-
 test/scripts/testutils.sh                          |  4 ++
 tools/compileconfig.py                             |  1 +
 tools/initlog.py                                   | 75 ++++++++++++++++++++++
 5 files changed, 83 insertions(+), 1 deletion(-)
 create mode 100755 tools/initlog.py

diff --git a/test/scripts/light-system-test-prepare-merge-takeover.sh b/test/scripts/light-system-test-prepare-merge-takeover.sh
index c84a17e..085a6a2 100755
--- a/test/scripts/light-system-test-prepare-merge-takeover.sh
+++ b/test/scripts/light-system-test-prepare-merge-takeover.sh
@@ -9,6 +9,7 @@ top_srcdir=$(cd $(dirname $0)/../..; pwd)
 
 mv mergedb mergedb-down
 mv mergedb-secondary mergedb
+init_log
 mkdir mergedb-secondary
 touch mergedb-secondary/logorder
 printf 0 > mergedb-secondary/verifiedsize
diff --git a/test/scripts/light-system-test.sh b/test/scripts/light-system-test.sh
index eee1078..816bd67 100755
--- a/test/scripts/light-system-test.sh
+++ b/test/scripts/light-system-test.sh
@@ -5,7 +5,7 @@ set -o errexit
 
 top_srcdir=$(cd $(dirname $0)/../..; pwd)
 
-. ${top_srcdir}/test/test.shvars
+. ${top_srcdir}/test/scripts/testutils.sh
 
 SCRIPTS=${top_srcdir}/test/scripts
 
@@ -18,6 +18,7 @@ tests_stop() {
 }
 
 ${SCRIPTS}/light-system-test-prepare.sh
+init_log
 tests_start
 ${SCRIPTS}/light-system-test-run-1.sh || (echo "Tests failed"; sleep 5; tests_stop; false)
 sleep 5
diff --git a/test/scripts/testutils.sh b/test/scripts/testutils.sh
index 2aba2d1..ba4221c 100644
--- a/test/scripts/testutils.sh
+++ b/test/scripts/testutils.sh
@@ -39,3 +39,7 @@ do_merge() {
     ${top_srcdir}/tools/merge --config ${top_srcdir}/test/catlfish-test.cfg --timing --localconfig ${top_srcdir}/test/catlfish-test-local-merge.cfg || fail "Merge failed"
     sleep 5                     # FIXME: Just wait for dist instead.
 }
+
+init_log() {
+    ${top_srcdir}/tools/initlog.py --config ${top_srcdir}/test/catlfish-test.cfg --localconfig ${top_srcdir}/test/catlfish-test-local-merge.cfg || fail "Log init failed"
+}
diff --git a/tools/compileconfig.py b/tools/compileconfig.py
index d6f9271..54e3b18 100755
--- a/tools/compileconfig.py
+++ b/tools/compileconfig.py
@@ -342,6 +342,7 @@ def gen_config(nodename, config, localconfig):
         services.add(Symbol("ht"))
         if nodename == primarymergenodename:
             merge = localconfig["merge"]
+            plopconfig.append((Symbol("db_backend_opt"), [(Symbol("write_flag"), Symbol("read"))]))
             plopconfig.append((Symbol("merge_delay"), merge["min-delay"]))
             plopconfig.append((Symbol("merge_dist_winsize"), merge["dist-window-size"]))
             plopconfig.append((Symbol("merge_dist_sendlog_chunksize"), merge["dist-sendlog-chunksize"]))
diff --git a/tools/initlog.py b/tools/initlog.py
new file mode 100755
index 0000000..e2e8dd1
--- /dev/null
+++ b/tools/initlog.py
@@ -0,0 +1,75 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Copyright (c) 2017, NORDUnet A/S.
+# See LICENSE for licensing information.
+#
+# Initialise a new CT log.
+#
+
+import sys
+import os
+import argparse
+import yaml
+import errno
+from time import time
+from base64 import b64encode
+from certtools import build_merkle_tree, generate_tree_head_signature, \
+     write_file
+from mergetools import get_sth, perm, get_logorder
+
+def parse_args():
+    parser = argparse.ArgumentParser(description="")
+    parser.add_argument('--config', help="System configuration",
+                        required=True)
+    parser.add_argument('--localconfig', help="Local configuration",
+                        required=True)
+
+    args = parser.parse_args()
+    config = yaml.load(open(args.config))
+    localconfig = yaml.load(open(args.localconfig))
+
+    return (args, config, localconfig)
+
+def main():
+    """
+    Initialise a log by creating
+    - sth file
+      - must not exist before
+      - consulting 'logorder' if it exists
+    - perm database if it doesn't exist
+    """
+    args, config, localconfig = parse_args()
+    signingnodes = config["signingnodes"]
+    paths = localconfig["paths"]
+    own_key = (localconfig["nodename"],
+               "%s/%s-private.pem" % (paths["privatekeys"],
+                                      localconfig["nodename"]))
+    mergedb = paths["mergedb"]
+    logorderfile = mergedb + "/logorder"
+    sthfile = mergedb + "/sth"
+
+    # Don't do anything if there's already an sth file.
+    sth = get_sth(sthfile)
+    if sth['tree_size'] >= 0:
+        print >>sys.stderr, \
+          "This log has an STH file with tree size %s." % sth['tree_size']
+        print >>sys.stderr, "I refuse to destroy this log."
+        return 1
+
+    # Ensure that we can find our keyfile.
+    try:
+        os.stat(own_key[1])
+    except OSError, e:
+        if e.errno == errno.ENOENT:
+            print >>sys.stderr, "Unable to open keyfile: %s" % own_key[1]
+            return 1
+        raise
+
+    # Create a chains database.
+    chainsdb = perm(localconfig.get("dbbackend", "filedb"), mergedb + "/chains")
+
+    return 0
+
+if __name__ == '__main__':
+    sys.exit(main())
-- 
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