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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (c) 2014-2015, NORDUnet A/S.
# See LICENSE for licensing information.
import sys
import urllib2
import base64
import select
from certtools import timing_point, check_sth_signature, \
get_public_key_from_file
from mergetools import get_curpos, get_logorder, chunks, get_missingentries, \
sendsth, create_sth_signature, hexencode, sendlog, sendentry, read_chain
def merge_dist(args, config, localconfig, sth_in):
paths = localconfig["paths"]
own_key = (localconfig["nodename"],
"%s/%s-private.pem" % (paths["privatekeys"],
localconfig["nodename"]))
frontendnodes = config["frontendnodes"]
signingnodes = config["signingnodes"]
ctbaseurl = config["baseurl"]
logpublickey = get_public_key_from_file(paths["logpublickey"])
mergedb = paths["mergedb"]
chainsdir = mergedb + "/chains"
logorderfile = mergedb + "/logorder"
timing = timing_point()
logorder = get_logorder(logorderfile)
timing_point(timing, "get logorder")
(tree_size, root_hash, timestamp) = sth_in
tree_head_signature = None
for signingnode in signingnodes:
try:
tree_head_signature = \
create_sth_signature(tree_size, timestamp,
root_hash,
"https://%s/" % signingnode["address"],
key=own_key)
break
except urllib2.URLError, err:
print >>sys.stderr, err
sys.stderr.flush()
if tree_head_signature == None:
print >>sys.stderr, "Could not contact any signing nodes"
sys.exit(1)
sth = {"tree_size": tree_size, "timestamp": timestamp,
"sha256_root_hash": base64.b64encode(root_hash),
"tree_head_signature": base64.b64encode(tree_head_signature)}
check_sth_signature(ctbaseurl, sth, publickey=logpublickey)
timing_point(timing, "build sth")
if args.timing:
print >>sys.stderr, timing["deltatimes"]
sys.stderr.flush()
print hexencode(root_hash)
sys.stdout.flush()
for frontendnode in frontendnodes:
nodeaddress = "https://%s/" % frontendnode["address"]
nodename = frontendnode["name"]
timing = timing_point()
print >>sys.stderr, "distributing for node", nodename
sys.stderr.flush()
curpos = get_curpos(nodename, nodeaddress, own_key, paths)
timing_point(timing, "get curpos")
print >>sys.stderr, "current position", curpos
sys.stderr.flush()
entries = [base64.b64encode(entry) for entry in logorder[curpos:]]
print >>sys.stderr, "sending log:",
sys.stderr.flush()
for chunk in chunks(entries, 1000):
for trynumber in range(5, 0, -1):
sendlogresult = sendlog(nodename, nodeaddress,
own_key, paths,
{"start": curpos, "hashes": chunk})
if sendlogresult == None:
if trynumber == 1:
sys.exit(1)
select.select([], [], [], 10.0)
print >>sys.stderr, "tries left:", trynumber
sys.stderr.flush()
continue
break
if sendlogresult["result"] != "ok":
print >>sys.stderr, "sendlog:", sendlogresult
sys.exit(1)
curpos += len(chunk)
print >>sys.stderr, curpos,
sys.stderr.flush()
print >>sys.stderr
timing_point(timing, "sendlog")
print >>sys.stderr, "log sent"
sys.stderr.flush()
missingentries = get_missingentries(nodename, nodeaddress, own_key,
paths)
timing_point(timing, "get missing")
print >>sys.stderr, "missing entries:", len(missingentries)
sys.stderr.flush()
fetched_entries = 0
print >>sys.stderr, "fetching missing entries",
sys.stderr.flush()
for missingentry in missingentries:
ehash = base64.b64decode(missingentry)
sendentryresult = sendentry(nodename, nodeaddress, own_key, paths,
read_chain(chainsdir, ehash), ehash)
if sendentryresult["result"] != "ok":
print >>sys.stderr, "send sth:", sendentryresult
sys.exit(1)
fetched_entries += 1
if fetched_entries % 1000 == 0:
print >>sys.stderr, fetched_entries,
sys.stderr.flush()
print >>sys.stderr
sys.stderr.flush()
timing_point(timing, "send missing")
sendsthresult = sendsth(nodename, nodeaddress, own_key, paths, sth)
if sendsthresult["result"] != "ok":
print >>sys.stderr, "send sth:", sendsthresult
sys.exit(1)
timing_point(timing, "send sth")
if args.timing:
print >>sys.stderr, timing["deltatimes"]
sys.stderr.flush()
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