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authorTomás Touceda <chiiph@leap.se>2014-03-12 16:26:23 -0300
committerTomás Touceda <chiiph@leap.se>2014-03-12 16:26:23 -0300
commit9c0020132980ed3608f3d662f2a0df43d44dc042 (patch)
treee6047243db5a1630d16849b0449994d0930091c5 /scripts/db_access/client_side_db.py
parenta8d002714e4ce2ff487785357cc01d082ffad537 (diff)
parent3337f48c810df45aac7d3009b49b4b2a34ef019d (diff)
Merge remote-tracking branch 'refs/remotes/drebs/feature/add-scripts' into develop
Diffstat (limited to 'scripts/db_access/client_side_db.py')
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1 files changed, 145 insertions, 0 deletions
diff --git a/scripts/db_access/client_side_db.py b/scripts/db_access/client_side_db.py
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+#!/usr/bin/python
+
+# This script gives client-side access to one Soledad user database.
+
+
+import sys
+import os
+import argparse
+import re
+import tempfile
+import getpass
+import requests
+import json
+import srp._pysrp as srp
+import binascii
+
+from leap.common.config import get_path_prefix
+from leap.soledad.client import Soledad
+
+
+safe_unhexlify = lambda x: binascii.unhexlify(x) if (
+ len(x) % 2 == 0) else binascii.unhexlify('0' + x)
+
+
+def fail(reason):
+ print 'Fail: ' + reason
+ exit(2)
+
+
+def get_api_info(provider):
+ info = requests.get(
+ 'https://'+provider+'/provider.json', verify=False).json()
+ return info['api_uri'], info['api_version']
+
+
+def login(username, passphrase, provider, api_uri, api_version):
+ usr = srp.User(username, passphrase, srp.SHA256, srp.NG_1024)
+ auth = None
+ try:
+ auth = authenticate(api_uri, api_version, usr).json()
+ except requests.exceptions.ConnectionError:
+ fail('Could not connect to server.')
+ if 'errors' in auth:
+ fail(str(auth['errors']))
+ return api_uri, api_version, auth
+
+
+def authenticate(api_uri, api_version, usr):
+ api_url = "%s/%s" % (api_uri, api_version)
+ session = requests.session()
+ uname, A = usr.start_authentication()
+ params = {'login': uname, 'A': binascii.hexlify(A)}
+ init = session.post(
+ api_url + '/sessions', data=params, verify=False).json()
+ if 'errors' in init:
+ fail('test user not found')
+ M = usr.process_challenge(
+ safe_unhexlify(init['salt']), safe_unhexlify(init['B']))
+ return session.put(api_url + '/sessions/' + uname, verify=False,
+ data={'client_auth': binascii.hexlify(M)})
+
+
+def get_soledad_info(username, provider, passphrase, basedir):
+ api_uri, api_version = get_api_info(provider)
+ auth = login(username, passphrase, provider, api_uri, api_version)
+ # get soledad server url
+ service_url = '%s/%s/config/soledad-service.json' % \
+ (api_uri, api_version)
+ soledad_hosts = requests.get(service_url, verify=False).json()['hosts']
+ hostnames = soledad_hosts.keys()
+ # allow for choosing the host
+ host = hostnames[0]
+ if len(hostnames) > 1:
+ i = 1
+ print "There are many available hosts:"
+ for h in hostnames:
+ print " (%d) %s.%s" % (i, h, provider)
+ i += 1
+ choice = raw_input("Choose a host to use (default: 1): ")
+ if choice != '':
+ host = hostnames[int(choice) - 1]
+ server_url = 'https://%s:%d/user-%s' % \
+ (soledad_hosts[host]['hostname'], soledad_hosts[host]['port'],
+ auth[2]['id'])
+ # get provider ca certificate
+ ca_cert = requests.get('https://%s/ca.crt' % provider, verify=False).text
+ cert_file = os.path.join(basedir, 'ca.crt')
+ with open(cert_file, 'w') as f:
+ f.write(ca_cert)
+ return auth[2]['id'], server_url, cert_file, auth[2]['token']
+
+
+def get_soledad_instance(username, provider, passphrase, basedir):
+ # setup soledad info
+ uuid, server_url, cert_file, token = \
+ get_soledad_info(username, provider, passphrase, basedir)
+ secrets_path = os.path.join(
+ basedir, '%s.secret' % uuid)
+ local_db_path = os.path.join(
+ basedir, '%s.db' % uuid)
+ # instantiate soledad
+ return Soledad(
+ uuid,
+ unicode(passphrase),
+ secrets_path=secrets_path,
+ local_db_path=local_db_path,
+ server_url=server_url,
+ cert_file=cert_file,
+ auth_token=token)
+
+
+# main program
+
+if __name__ == '__main__':
+
+ class ValidateUserHandle(argparse.Action):
+ def __call__(self, parser, namespace, values, option_string=None):
+ m = re.compile('^([^@]+)@([^@]+\.[^@]+)$')
+ res = m.match(values)
+ if res == None:
+ parser.error('User handle should have the form user@provider.')
+ setattr(namespace, 'username', res.groups()[0])
+ setattr(namespace, 'provider', res.groups()[1])
+
+ # parse command line
+ parser = argparse.ArgumentParser()
+ parser.add_argument(
+ 'user@provider', action=ValidateUserHandle, help='the user handle')
+ parser.add_argument(
+ '-b', dest='basedir', required=False, default=None, help='the user handle')
+ args = parser.parse_args()
+
+ # get the password
+ passphrase = getpass.getpass(
+ 'Password for %s@%s: ' % (args.username, args.provider))
+
+ # get the basedir
+ basedir = args.basedir
+ if basedir is None:
+ basedir = tempfile.mkdtemp()
+ print 'Using %s as base directory.' % basedir
+
+ # get the soledad instance
+ s = get_soledad_instance(
+ args.username, args.provider, passphrase, basedir)