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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
# Copyright 2019 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import common
import json
import logging
import os
import shutil
import subprocess
import tempfile
import time
import urllib2
# Maximum amount of time to block while waiting for "pm serve" to come up.
_PM_SERVE_LIVENESS_TIMEOUT_SECS = 10
_MANAGED_REPO_NAME = 'chrome_runner'
class AmberRepo(object):
"""Abstract interface for a repository used to serve packages to devices."""
def __init__(self, target):
self._target = target
def PublishPackage(self, package_path):
pm_tool = common.GetHostToolPathFromPlatform('pm')
subprocess.check_call(
[pm_tool, 'publish', '-a', '-f', package_path, '-r', self.GetPath(),
'-vt', '-v'],
stderr=subprocess.STDOUT)
def GetPath(self):
pass
class ManagedAmberRepo(AmberRepo):
"""Creates and serves packages from an ephemeral repository."""
def __init__(self, target):
AmberRepo.__init__(self, target)
self._with_count = 0
self._amber_root = tempfile.mkdtemp()
pm_tool = common.GetHostToolPathFromPlatform('pm')
subprocess.check_call([pm_tool, 'newrepo', '-repo', self._amber_root])
logging.info('Creating and serving temporary Amber root: {}.'.format(
self._amber_root))
serve_port = common.GetAvailableTcpPort()
self._pm_serve_task = subprocess.Popen(
[pm_tool, 'serve', '-d', os.path.join(self._amber_root, 'repository'),
'-l', ':%d' % serve_port, '-q'])
# Block until "pm serve" starts serving HTTP traffic at |serve_port|.
timeout = time.time() + _PM_SERVE_LIVENESS_TIMEOUT_SECS
while True:
try:
urllib2.urlopen('http://localhost:%d' % serve_port, timeout=1).read()
break
except urllib2.URLError:
logging.info('Waiting until \'pm serve\' is up...')
if time.time() >= timeout:
raise Exception('Timed out while waiting for \'pm serve\'.')
time.sleep(1)
remote_port = common.ConnectPortForwardingTask(target, serve_port, 0)
self._RegisterAmberRepository(self._amber_root, remote_port)
def __enter__(self):
self._with_count += 1
return self
def __exit__(self, type, value, tb):
"""Allows the repository to delete itself when it leaves the scope of a
'with' block."""
self._with_count -= 1
if self._with_count > 0:
return
logging.info('Cleaning up Amber root: ' + self._amber_root)
shutil.rmtree(self._amber_root)
self._amber_root = None
self._UnregisterAmberRepository()
self._pm_serve_task.kill()
self._pm_serve_task = None
def GetPath(self):
return self._amber_root
def _RegisterAmberRepository(self, tuf_repo, remote_port):
"""Configures a device to use a local TUF repository as an installation
source for packages.
|tuf_repo|: The host filesystem path to the TUF repository.
|remote_port|: The reverse-forwarded port used to connect to instance of
`pm serve` that is serving the contents of |tuf_repo|."""
# Extract the public signing key for inclusion in the config file.
root_keys = []
root_json_path = os.path.join(tuf_repo, 'repository', 'root.json')
root_json = json.load(open(root_json_path, 'r'))
for root_key_id in root_json['signed']['roles']['root']['keyids']:
root_keys.append({
'Type': root_json['signed']['keys'][root_key_id]['keytype'],
'Value': root_json['signed']['keys'][root_key_id]['keyval']['public']
})
# "pm serve" can automatically generate a "config.json" file at query time,
# but the file is unusable because it specifies URLs with port
# numbers that are unreachable from across the port forwarding boundary.
# So instead, we generate our own config file with the forwarded port
# numbers instead.
config_file = open(os.path.join(tuf_repo, 'repository', 'repo_config.json'),
'w')
json.dump({
'ID': _MANAGED_REPO_NAME,
'RepoURL': "http://127.0.0.1:%d" % remote_port,
'BlobRepoURL': "http://127.0.0.1:%d/blobs" % remote_port,
'RatePeriod': 10,
'RootKeys': root_keys,
'StatusConfig': {
'Enabled': True
},
'Auto': True
}, config_file)
config_file.close()
# Register the repo.
return_code = self._target.RunCommand(
[('amberctl rm_src -n %s; ' +
'amberctl add_src -f http://127.0.0.1:%d/repo_config.json')
% (_MANAGED_REPO_NAME, remote_port)])
if return_code != 0:
raise Exception('Error code %d when running amberctl.' % return_code)
def _UnregisterAmberRepository(self):
"""Unregisters the Amber repository."""
logging.debug('Unregistering Amber repository.')
self._target.RunCommand(['amberctl', 'rm_src', '-n', _MANAGED_REPO_NAME])
# Re-enable 'devhost' repo if it's present. This is useful for devices that
# were booted with 'fx serve'.
self._target.RunCommand(['amberctl', 'enable_src', '-n', 'devhost'],
silent=True)
class ExternalAmberRepo(AmberRepo):
"""Publishes packages to an Amber repository located and served externally
(ie. located under a Fuchsia build directory and served by "fx serve"."""
def __init__(self, amber_root):
self._amber_root = amber_root
logging.info('Using existing Amber root: {}'.format(amber_root))
logging.info('Ensure that "fx serve" is running.')
def GetPath(self):
return self._amber_root
def __enter__(self):
return self
def __exit__(self, type, value, tb):
pass
|
