1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (c) 2014-2015, NORDUnet A/S.
# See LICENSE for licensing information.
#
# Distribute the 'sth' file and all missing entries to all frontend nodes.
# See catlfish/doc/merge.txt for more about the merge process.
#
import sys
import json
from time import sleep
from base64 import b64encode, b64decode
from certtools import timing_point, \
create_ssl_context
from mergetools import get_curpos, get_logorder, chunks, get_missingentries, \
sendsth, sendlog, sendentry, parse_args, perm
def merge_dist(args, localconfig, frontendnodes, timestamp):
paths = localconfig["paths"]
own_key = (localconfig["nodename"],
"%s/%s-private.pem" % (paths["privatekeys"],
localconfig["nodename"]))
mergedb = paths["mergedb"]
chainsdb = perm(localconfig.get("dbbackend", "filedb"), mergedb + "/chains")
logorderfile = mergedb + "/logorder"
sthfile = mergedb + "/sth"
create_ssl_context(cafile=paths["https_cacertfile"])
timing = timing_point()
try:
sth = json.loads(open(sthfile, 'r').read())
except (IOError, ValueError):
print >>sys.stderr, "No valid STH file found in", sthfile
return timestamp
if sth['timestamp'] < timestamp:
print >>sys.stderr, "New STH file older than the previous one:", \
sth['timestamp'], "<", timestamp
return timestamp
if sth['timestamp'] == timestamp:
return timestamp
timestamp = sth['timestamp']
logorder = get_logorder(logorderfile, sth['tree_size'])
timing_point(timing, "get logorder")
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 = [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)
sleep(10)
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()
sent_entries = 0
print >>sys.stderr, "send missing entries",
sys.stderr.flush()
for missingentry in missingentries:
ehash = b64decode(missingentry)
sendentryresult = sendentry(nodename, nodeaddress, own_key, paths,
chainsdb.get(ehash), ehash)
if sendentryresult["result"] != "ok":
print >>sys.stderr, "sendentry:", sendentryresult
sys.exit(1)
sent_entries += 1
if sent_entries % 1000 == 0:
print >>sys.stderr, sent_entries,
sys.stderr.flush()
print >>sys.stderr
sys.stderr.flush()
timing_point(timing, "send missing")
print >>sys.stderr, "sending sth to node", nodename
sys.stderr.flush()
sendsthresult = sendsth(nodename, nodeaddress, own_key, paths, sth)
if sendsthresult["result"] != "ok":
print >>sys.stderr, "sendsth:", sendsthresult
sys.exit(1)
timing_point(timing, "send sth")
if args.timing:
print >>sys.stderr, "timing: merge_dist:", timing["deltatimes"]
sys.stderr.flush()
return timestamp
def main():
"""
Distribute missing entries and the STH to all frontend nodes.
"""
args, config, localconfig = parse_args()
timestamp = 0
if len(args.node) == 0:
nodes = config["frontendnodes"]
else:
nodes = [n for n in config["frontendnodes"] if n["name"] in args.node]
while True:
timestamp = merge_dist(args, localconfig, nodes, timestamp)
if args.interval is None:
break
print >>sys.stderr, "sleeping", args.interval, "seconds"
sleep(args.interval)
if __name__ == '__main__':
sys.exit(main())
|
