| # Copyright (c) 2011 The Chromium OS 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 json |
| import os |
| import subprocess |
| import time |
| import urllib2 |
| import urlparse |
| |
| import cherrypy |
| |
| from build_util import BuildObject |
| import autoupdate_lib |
| import common_util |
| import log_util |
| |
| |
| # Module-local log function. |
| def _Log(message, *args): |
| return log_util.LogWithTag('UPDATE', message, *args) |
| |
| |
| UPDATE_FILE = 'update.gz' |
| METADATA_FILE = 'update.meta' |
| STATEFUL_FILE = 'stateful.tgz' |
| CACHE_DIR = 'cache' |
| |
| |
| class AutoupdateError(Exception): |
| """Exception classes used by this module.""" |
| pass |
| |
| |
| def _ChangeUrlPort(url, new_port): |
| """Return the URL passed in with a different port""" |
| scheme, netloc, path, query, fragment = urlparse.urlsplit(url) |
| host_port = netloc.split(':') |
| |
| if len(host_port) == 1: |
| host_port.append(new_port) |
| else: |
| host_port[1] = new_port |
| |
| print host_port |
| netloc = "%s:%s" % tuple(host_port) |
| |
| return urlparse.urlunsplit((scheme, netloc, path, query, fragment)) |
| |
| def _NonePathJoin(*args): |
| """os.path.join that filters None's from the argument list.""" |
| return os.path.join(*filter(None, args)) |
| |
| |
| class HostInfo(object): |
| """Records information about an individual host. |
| |
| Members: |
| attrs: Static attributes (legacy) |
| log: Complete log of recorded client entries |
| """ |
| |
| def __init__(self): |
| # A dictionary of current attributes pertaining to the host. |
| self.attrs = {} |
| |
| # A list of pairs consisting of a timestamp and a dictionary of recorded |
| # attributes. |
| self.log = [] |
| |
| def __repr__(self): |
| return 'attrs=%s, log=%s' % (self.attrs, self.log) |
| |
| def AddLogEntry(self, entry): |
| """Append a new log entry.""" |
| # Append a timestamp. |
| assert not 'timestamp' in entry, 'Oops, timestamp field already in use' |
| entry['timestamp'] = time.strftime('%Y-%m-%d %H:%M:%S') |
| # Add entry to hosts' message log. |
| self.log.append(entry) |
| |
| |
| class HostInfoTable(object): |
| """Records information about a set of hosts who engage in update activity. |
| |
| Members: |
| table: Table of information on hosts. |
| """ |
| |
| def __init__(self): |
| # A dictionary of host information. Keys are normally IP addresses. |
| self.table = {} |
| |
| def __repr__(self): |
| return '%s' % self.table |
| |
| def GetInitHostInfo(self, host_id): |
| """Return a host's info object, or create a new one if none exists.""" |
| return self.table.setdefault(host_id, HostInfo()) |
| |
| def GetHostInfo(self, host_id): |
| """Return an info object for given host, if such exists.""" |
| return self.table.get(host_id) |
| |
| |
| class UpdateMetadata(object): |
| """Object containing metadata about an update payload.""" |
| |
| def __init__(self, sha1, sha256, size, is_delta_format): |
| self.sha1 = sha1 |
| self.sha256 = sha256 |
| self.size = size |
| self.is_delta_format = is_delta_format |
| |
| |
| class Autoupdate(BuildObject): |
| """Class that contains functionality that handles Chrome OS update pings. |
| |
| Members: |
| serve_only: serve only pre-built updates. static_dir must contain |
| update.gz and stateful.tgz. |
| use_test_image: use chromiumos_test_image.bin rather than the standard. |
| urlbase: base URL, other than devserver, for update images. |
| forced_image: path to an image to use for all updates. |
| payload_path: path to pre-generated payload to serve. |
| src_image: if specified, creates a delta payload from this image. |
| proxy_port: port of local proxy to tell client to connect to you |
| through. |
| vm: set for VM images (doesn't patch kernel) |
| board: board for the image. Needed for pre-generating of updates. |
| copy_to_static_root: copies images generated from the cache to ~/static. |
| private_key: path to private key in PEM format. |
| critical_update: whether provisioned payload is critical. |
| remote_payload: whether provisioned payload is remotely staged. |
| max_updates: maximum number of updates we'll try to provision. |
| host_log: record full history of host update events. |
| """ |
| |
| _PAYLOAD_URL_PREFIX = '/static/' |
| _FILEINFO_URL_PREFIX = '/api/fileinfo/' |
| |
| SHA1_ATTR = 'sha1' |
| SHA256_ATTR = 'sha256' |
| SIZE_ATTR = 'size' |
| ISDELTA_ATTR = 'is_delta' |
| |
| def __init__(self, serve_only=None, test_image=False, urlbase=None, |
| forced_image=None, payload_path=None, |
| proxy_port=None, src_image='', vm=False, board=None, |
| copy_to_static_root=True, private_key=None, |
| critical_update=False, remote_payload=False, max_updates= -1, |
| host_log=False, *args, **kwargs): |
| super(Autoupdate, self).__init__(*args, **kwargs) |
| self.serve_only = serve_only |
| self.use_test_image = test_image |
| if urlbase: |
| self.urlbase = urlbase |
| else: |
| self.urlbase = None |
| |
| self.forced_image = forced_image |
| self.payload_path = payload_path |
| self.src_image = src_image |
| self.proxy_port = proxy_port |
| self.vm = vm |
| self.board = board |
| self.copy_to_static_root = copy_to_static_root |
| self.private_key = private_key |
| self.critical_update = critical_update |
| self.remote_payload = remote_payload |
| self.max_updates = max_updates |
| self.host_log = host_log |
| |
| # Path to pre-generated file. |
| self.pregenerated_path = None |
| |
| # Initialize empty host info cache. Used to keep track of various bits of |
| # information about a given host. A host is identified by its IP address. |
| # The info stored for each host includes a complete log of events for this |
| # host, as well as a dictionary of current attributes derived from events. |
| self.host_infos = HostInfoTable() |
| |
| @classmethod |
| def _ReadMetadataFromStream(cls, stream): |
| """Returns metadata obj from input json stream that implements .read().""" |
| file_attr_dict = {} |
| try: |
| file_attr_dict = json.loads(stream.read()) |
| except IOError: |
| return None |
| |
| sha1 = file_attr_dict.get(cls.SHA1_ATTR) |
| sha256 = file_attr_dict.get(cls.SHA256_ATTR) |
| size = file_attr_dict.get(cls.SIZE_ATTR) |
| is_delta = file_attr_dict.get(cls.ISDELTA_ATTR) |
| return UpdateMetadata(sha1, sha256, size, is_delta) |
| |
| @staticmethod |
| def _ReadMetadataFromFile(payload_dir): |
| """Returns metadata object from the metadata_file in the payload_dir""" |
| metadata_file = os.path.join(payload_dir, METADATA_FILE) |
| if os.path.exists(metadata_file): |
| with open(metadata_file, 'r') as metadata_stream: |
| return Autoupdate._ReadMetadataFromStream(metadata_stream) |
| |
| @classmethod |
| def _StoreMetadataToFile(cls, payload_dir, metadata_obj): |
| """Stores metadata object into the metadata_file of the payload_dir""" |
| file_dict = {cls.SHA1_ATTR: metadata_obj.sha1, |
| cls.SHA256_ATTR: metadata_obj.sha256, |
| cls.SIZE_ATTR: metadata_obj.size, |
| cls.ISDELTA_ATTR: metadata_obj.is_delta_format} |
| metadata_file = os.path.join(payload_dir, METADATA_FILE) |
| with open(metadata_file, 'w') as file_handle: |
| json.dump(file_dict, file_handle) |
| |
| def _GetDefaultBoardID(self): |
| """Returns the default board id stored in .default_board.""" |
| board_file = '%s/.default_board' % (self.scripts_dir) |
| try: |
| return open(board_file).read() |
| except IOError: |
| return 'x86-generic' |
| |
| def _GetLatestImageDir(self, board): |
| """Returns the latest image dir based on shell script.""" |
| cmd = '%s/get_latest_image.sh --board %s' % (self.scripts_dir, board) |
| return os.popen(cmd).read().strip() |
| |
| @staticmethod |
| def _GetVersionFromDir(image_dir): |
| """Returns the version of the image based on the name of the directory.""" |
| latest_version = os.path.basename(image_dir) |
| parts = latest_version.split('-') |
| if len(parts) == 2: |
| # Old-style, e.g. "0.15.938.2011_08_23_0941-a1". |
| # TODO(derat): Remove the code for old-style versions after 20120101. |
| return parts[0] |
| else: |
| # New-style, e.g. "R16-1102.0.2011_09_30_0806-a1". |
| return parts[1] |
| |
| @staticmethod |
| def _CanUpdate(client_version, latest_version): |
| """Returns true if the latest_version is greater than the client_version. |
| """ |
| _Log('client version %s latest version %s', client_version, latest_version) |
| |
| client_tokens = client_version.replace('_', '').split('.') |
| # If the client has an old four-token version like "0.16.892.0", drop the |
| # first two tokens -- we use versions like "892.0.0" now. |
| # TODO(derat): Remove the code for old-style versions after 20120101. |
| if len(client_tokens) == 4: |
| client_tokens = client_tokens[2:] |
| |
| latest_tokens = latest_version.replace('_', '').split('.') |
| if len(latest_tokens) == 4: |
| latest_tokens = latest_tokens[2:] |
| |
| for i in range(min(len(client_tokens), len(latest_tokens))): |
| if int(latest_tokens[i]) == int(client_tokens[i]): |
| continue |
| return int(latest_tokens[i]) > int(client_tokens[i]) |
| |
| # Favor four-token new-style versions on the server over old-style versions |
| # on the client if everything else matches. |
| return len(latest_tokens) > len(client_tokens) |
| |
| def _GetImageName(self): |
| """Returns the name of the image that should be used.""" |
| if self.use_test_image: |
| image_name = 'chromiumos_test_image.bin' |
| else: |
| image_name = 'chromiumos_image.bin' |
| |
| return image_name |
| |
| @staticmethod |
| def _IsDeltaFormatFile(filename): |
| try: |
| file_handle = open(filename, 'r') |
| delta_magic = 'CrAU' |
| magic = file_handle.read(len(delta_magic)) |
| return magic == delta_magic |
| except IOError: |
| # For unit tests, we may not have real files, so it's ok to |
| # ignore these IOErrors. In any case, this value is not being |
| # used in update_engine at all as of now. |
| return False |
| |
| def GenerateUpdateFile(self, src_image, image_path, output_dir): |
| """Generates an update gz given a full path to an image. |
| |
| Args: |
| image_path: Full path to image. |
| Raises: |
| subprocess.CalledProcessError if the update generator fails to generate a |
| stateful payload. |
| """ |
| update_path = os.path.join(output_dir, UPDATE_FILE) |
| _Log('Generating update image %s', update_path) |
| |
| update_command = [ |
| 'cros_generate_update_payload', |
| '--image', image_path, |
| '--output', update_path, |
| ] |
| |
| if src_image: |
| update_command.extend(['--src_image', src_image]) |
| |
| if not self.vm: |
| update_command.append('--patch_kernel') |
| |
| if self.private_key: |
| update_command.extend(['--private_key', self.private_key]) |
| |
| _Log('Running %s', ' '.join(update_command)) |
| subprocess.check_call(update_command) |
| |
| @staticmethod |
| def GenerateStatefulFile(image_path, output_dir): |
| """Generates a stateful update payload given a full path to an image. |
| |
| Args: |
| image_path: Full path to image. |
| Raises: |
| subprocess.CalledProcessError if the update generator fails to generate a |
| stateful payload. |
| """ |
| update_command = [ |
| 'cros_generate_stateful_update_payload', |
| '--image', image_path, |
| '--output_dir', output_dir, |
| ] |
| _Log('Running %s', ' '.join(update_command)) |
| subprocess.check_call(update_command) |
| |
| def FindCachedUpdateImageSubDir(self, src_image, dest_image): |
| """Find directory to store a cached update. |
| |
| Given one, or two images for an update, this finds which cache directory |
| should hold the update files, even if they don't exist yet. |
| |
| Returns: |
| A directory path for storing a cached update, of the following form: |
| Non-delta updates: |
| CACHE_DIR/<dest_hash> |
| Delta updates: |
| CACHE_DIR/<src_hash>_<dest_hash> |
| Signed updates (self.private_key): |
| CACHE_DIR/<src_hash>_<dest_hash>+<private_key_hash> |
| """ |
| update_dir = '' |
| if src_image: |
| update_dir += common_util.GetFileMd5(src_image) + '_' |
| |
| update_dir += common_util.GetFileMd5(dest_image) |
| if self.private_key: |
| update_dir += '+' + common_util.GetFileMd5(self.private_key) |
| |
| if not self.vm: |
| update_dir += '+patched_kernel' |
| |
| return os.path.join(CACHE_DIR, update_dir) |
| |
| def GenerateUpdateImage(self, image_path, output_dir): |
| """Force generates an update payload based on the given image_path. |
| |
| Args: |
| src_image: image we are updating from (Null/empty for non-delta) |
| image_path: full path to the image. |
| output_dir: the directory to write the update payloads to |
| Raises: |
| AutoupdateError if it failed to generate either update or stateful |
| payload. |
| """ |
| _Log('Generating update for image %s', image_path) |
| |
| # Delete any previous state in this directory. |
| os.system('rm -rf "%s"' % output_dir) |
| os.makedirs(output_dir) |
| |
| try: |
| self.GenerateUpdateFile(self.src_image, image_path, output_dir) |
| self.GenerateStatefulFile(image_path, output_dir) |
| except subprocess.CalledProcessError: |
| os.system('rm -rf "%s"' % output_dir) |
| raise AutoupdateError('Failed to generate update in %s' % output_dir) |
| |
| def GenerateUpdateImageWithCache(self, image_path, static_image_dir): |
| """Force generates an update payload based on the given image_path. |
| |
| Args: |
| image_path: full path to the image. |
| static_image_dir: the directory to move images to after generating. |
| Returns: |
| update directory relative to static_image_dir. None if it should |
| serve from the static_image_dir. |
| Raises: |
| AutoupdateError if it we need to generate a payload and fail to do so. |
| """ |
| _Log('Generating update for src %s image %s', self.src_image, image_path) |
| |
| # If it was pregenerated_path, don't regenerate |
| if self.pregenerated_path: |
| return self.pregenerated_path |
| |
| # Which sub_dir of static_image_dir should hold our cached update image |
| cache_sub_dir = self.FindCachedUpdateImageSubDir(self.src_image, image_path) |
| _Log('Caching in sub_dir "%s"', cache_sub_dir) |
| |
| # The cached payloads exist in a cache dir |
| cache_update_payload = os.path.join(static_image_dir, |
| cache_sub_dir, UPDATE_FILE) |
| cache_stateful_payload = os.path.join(static_image_dir, |
| cache_sub_dir, STATEFUL_FILE) |
| |
| full_cache_dir = os.path.join(static_image_dir, cache_sub_dir) |
| # Check to see if this cache directory is valid. |
| if not os.path.exists(cache_update_payload) or not os.path.exists( |
| cache_stateful_payload): |
| self.GenerateUpdateImage(image_path, full_cache_dir) |
| |
| self.pregenerated_path = cache_sub_dir |
| |
| # Generate the cache file. |
| self.GetLocalPayloadAttrs(full_cache_dir) |
| cache_metadata_file = os.path.join(full_cache_dir, METADATA_FILE) |
| |
| # Generation complete, copy if requested. |
| if self.copy_to_static_root: |
| # The final results exist directly in static |
| update_payload = os.path.join(static_image_dir, |
| UPDATE_FILE) |
| stateful_payload = os.path.join(static_image_dir, |
| STATEFUL_FILE) |
| metadata_file = os.path.join(static_image_dir, METADATA_FILE) |
| common_util.CopyFile(cache_update_payload, update_payload) |
| common_util.CopyFile(cache_stateful_payload, stateful_payload) |
| common_util.CopyFile(cache_metadata_file, metadata_file) |
| return None |
| else: |
| return self.pregenerated_path |
| |
| def GenerateLatestUpdateImage(self, board, client_version, |
| static_image_dir): |
| """Generates an update using the latest image that has been built. |
| |
| This will only generate an update if the newest update is newer than that |
| on the client or client_version is 'ForcedUpdate'. |
| |
| Args: |
| board: Name of the board. |
| client_version: Current version of the client or 'ForcedUpdate' |
| static_image_dir: the directory to move images to after generating. |
| Returns: |
| Name of the update directory relative to the static dir. None if it should |
| serve from the static_image_dir. |
| Raises: |
| AutoupdateError if it failed to generate the payload or can't update |
| the given client_version. |
| """ |
| latest_image_dir = self._GetLatestImageDir(board) |
| latest_version = self._GetVersionFromDir(latest_image_dir) |
| latest_image_path = os.path.join(latest_image_dir, self._GetImageName()) |
| |
| # Check to see whether or not we should update. |
| if client_version != 'ForcedUpdate' and not self._CanUpdate( |
| client_version, latest_version): |
| raise AutoupdateError('Update check received but no update available ' |
| 'for client') |
| |
| return self.GenerateUpdateImageWithCache(latest_image_path, |
| static_image_dir=static_image_dir) |
| |
| def GenerateUpdatePayload(self, board, client_version, static_image_dir): |
| """Generates an update for an image and returns the relative payload dir. |
| |
| Returns: |
| payload dir relative to static_image_dir. None if it should |
| serve from the static_image_dir. |
| Raises: |
| AutoupdateError if it failed to generate the payload. |
| """ |
| dest_path = os.path.join(static_image_dir, UPDATE_FILE) |
| dest_stateful = os.path.join(static_image_dir, STATEFUL_FILE) |
| |
| if self.payload_path: |
| # If the forced payload is not already in our static_image_dir, |
| # copy it there. |
| src_path = os.path.abspath(self.payload_path) |
| src_stateful = os.path.join(os.path.dirname(src_path), STATEFUL_FILE) |
| # Only copy the files if the source directory is different from dest. |
| if os.path.dirname(src_path) != os.path.abspath(static_image_dir): |
| common_util.CopyFile(src_path, dest_path) |
| |
| # The stateful payload is optional. |
| if os.path.exists(src_stateful): |
| common_util.CopyFile(src_stateful, dest_stateful) |
| else: |
| _Log('WARN: %s not found. Expected for dev and test builds', |
| STATEFUL_FILE) |
| if os.path.exists(dest_stateful): |
| os.remove(dest_stateful) |
| |
| # Serve from the main directory so rel_path is None. |
| return None |
| elif self.forced_image: |
| return self.GenerateUpdateImageWithCache( |
| self.forced_image, |
| static_image_dir=static_image_dir) |
| else: |
| if not board: |
| raise AutoupdateError( |
| 'Failed to generate update. ' |
| 'You must set --board when pre-generating latest update.') |
| |
| return self.GenerateLatestUpdateImage(board, client_version, |
| static_image_dir) |
| |
| def PreGenerateUpdate(self): |
| """Pre-generates an update and prints out the relative path it. |
| |
| Returns relative path of the update. |
| |
| Raises: |
| AutoupdateError if it failed to generate the payload. |
| """ |
| _Log('Pre-generating the update payload') |
| # Does not work with labels so just use static dir. |
| pregenerated_update = self.GenerateUpdatePayload(self.board, '0.0.0.0', |
| self.static_dir) |
| print 'PREGENERATED_UPDATE=%s' % _NonePathJoin(pregenerated_update, |
| UPDATE_FILE) |
| return pregenerated_update |
| |
| def _GetRemotePayloadAttrs(self, url): |
| """Returns hashes, size and delta flag of a remote update payload. |
| |
| Obtain attributes of a payload file available on a remote devserver. This |
| is based on the assumption that the payload URL uses the /static prefix. We |
| need to make sure that both clients (requests) and remote devserver |
| (provisioning) preserve this invariant. |
| |
| Args: |
| url: URL of statically staged remote file (http://host:port/static/...) |
| Returns: |
| A tuple containing the SHA1, SHA256, file size and whether or not it's a |
| delta payload (Boolean). |
| """ |
| if self._PAYLOAD_URL_PREFIX not in url: |
| raise AutoupdateError( |
| 'Payload URL does not have the expected prefix (%s)' % |
| self._PAYLOAD_URL_PREFIX) |
| |
| fileinfo_url = url.replace(self._PAYLOAD_URL_PREFIX, |
| self._FILEINFO_URL_PREFIX) |
| _Log('Retrieving file info for remote payload via %s', fileinfo_url) |
| try: |
| conn = urllib2.urlopen(fileinfo_url) |
| metadata_obj = Autoupdate._ReadMetadataFromStream(conn) |
| # These fields are required for remote calls. |
| if not metadata_obj: |
| raise AutoupdateError('Failed to obtain remote payload info') |
| |
| if not metadata_obj.is_delta_format: |
| metadata_obj.is_delta_format = ('_mton' in url) or ('_nton' in url) |
| |
| return metadata_obj |
| except IOError as e: |
| raise AutoupdateError('Failed to obtain remote payload info: %s', e) |
| |
| def GetLocalPayloadAttrs(self, payload_dir): |
| """Returns hashes, size and delta flag of a local update payload. |
| |
| Args: |
| payload_dir: Path to the directory the payload is in. |
| Returns: |
| A tuple containing the SHA1, SHA256, file size and whether or not it's a |
| delta payload (Boolean). |
| """ |
| filename = os.path.join(payload_dir, UPDATE_FILE) |
| if not os.path.exists(filename): |
| raise AutoupdateError('update.gz not present in payload dir %s' % |
| payload_dir) |
| |
| metadata_obj = Autoupdate._ReadMetadataFromFile(payload_dir) |
| if not metadata_obj or not (metadata_obj.sha1 and |
| metadata_obj.sha256 and |
| metadata_obj.size): |
| sha1 = common_util.GetFileSha1(filename) |
| sha256 = common_util.GetFileSha256(filename) |
| size = common_util.GetFileSize(filename) |
| is_delta_format = self._IsDeltaFormatFile(filename) |
| metadata_obj = UpdateMetadata(sha1, sha256, size, is_delta_format) |
| Autoupdate._StoreMetadataToFile(payload_dir, metadata_obj) |
| |
| return metadata_obj |
| |
| def _ProcessUpdateComponents(self, app, event): |
| """Processes the app and event components of an update request. |
| |
| Returns tuple containing forced_update_label, client_version, and board. |
| """ |
| # Initialize an empty dictionary for event attributes to log. |
| log_message = {} |
| |
| # Determine request IP, strip any IPv6 data for simplicity. |
| client_ip = cherrypy.request.remote.ip.split(':')[-1] |
| # Obtain (or init) info object for this client. |
| curr_host_info = self.host_infos.GetInitHostInfo(client_ip) |
| |
| client_version = 'ForcedUpdate' |
| board = None |
| if app: |
| client_version = app.getAttribute('version') |
| channel = app.getAttribute('track') |
| board = (app.hasAttribute('board') and app.getAttribute('board') |
| or self._GetDefaultBoardID()) |
| # Add attributes to log message |
| log_message['version'] = client_version |
| log_message['track'] = channel |
| log_message['board'] = board |
| curr_host_info.attrs['last_known_version'] = client_version |
| |
| if event: |
| event_result = int(event[0].getAttribute('eventresult')) |
| event_type = int(event[0].getAttribute('eventtype')) |
| client_previous_version = (event[0].getAttribute('previousversion') |
| if event[0].hasAttribute('previousversion') |
| else None) |
| # Store attributes to legacy host info structure |
| curr_host_info.attrs['last_event_status'] = event_result |
| curr_host_info.attrs['last_event_type'] = event_type |
| # Add attributes to log message |
| log_message['event_result'] = event_result |
| log_message['event_type'] = event_type |
| if client_previous_version is not None: |
| log_message['previous_version'] = client_previous_version |
| |
| # Log host event, if so instructed. |
| if self.host_log: |
| curr_host_info.AddLogEntry(log_message) |
| |
| return (curr_host_info.attrs.pop('forced_update_label', None), |
| client_version, board) |
| |
| def _GetStaticUrl(self): |
| """Returns the static url base that should prefix all payload responses.""" |
| x_forwarded_host = cherrypy.request.headers.get('X-Forwarded-Host') |
| if x_forwarded_host: |
| hostname = 'http://' + x_forwarded_host |
| else: |
| hostname = cherrypy.request.base |
| |
| if self.urlbase: |
| static_urlbase = self.urlbase |
| elif self.serve_only: |
| static_urlbase = '%s/static/archive' % hostname |
| else: |
| static_urlbase = '%s/static' % hostname |
| |
| # If we have a proxy port, adjust the URL we instruct the client to |
| # use to go through the proxy. |
| if self.proxy_port: |
| static_urlbase = _ChangeUrlPort(static_urlbase, self.proxy_port) |
| |
| _Log('Using static url base %s', static_urlbase) |
| _Log('Handling update ping as %s', hostname) |
| return static_urlbase |
| |
| def HandleUpdatePing(self, data, label=None): |
| """Handles an update ping from an update client. |
| |
| Args: |
| data: XML blob from client. |
| label: optional label for the update. |
| Returns: |
| Update payload message for client. |
| """ |
| # Get the static url base that will form that base of our update url e.g. |
| # http://hostname:8080/static/update.gz. |
| static_urlbase = self._GetStaticUrl() |
| |
| # Parse the XML we got into the components we care about. |
| protocol, app, event, update_check = autoupdate_lib.ParseUpdateRequest(data) |
| |
| # ######################################################################### |
| # Process attributes of the update check. |
| forced_update_label, client_version, board = self._ProcessUpdateComponents( |
| app, event) |
| |
| # We only process update_checks in the update rpc. |
| if not update_check: |
| _Log('Non-update check received. Returning blank payload') |
| # TODO(sosa): Generate correct non-updatecheck payload to better test |
| # update clients. |
| return autoupdate_lib.GetNoUpdateResponse(protocol) |
| |
| # In case max_updates is used, return no response if max reached. |
| if self.max_updates > 0: |
| self.max_updates -= 1 |
| elif self.max_updates == 0: |
| _Log('Request received but max number of updates handled') |
| return autoupdate_lib.GetNoUpdateResponse(protocol) |
| |
| _Log('Update Check Received. Client is using protocol version: %s', |
| protocol) |
| |
| if forced_update_label: |
| if label: |
| _Log('Label: %s set but being overwritten to %s by request', label, |
| forced_update_label) |
| |
| label = forced_update_label |
| |
| # ######################################################################### |
| # Finally its time to generate the omaha response to give to client that |
| # lets them know where to find the payload and its associated metadata. |
| metadata_obj = None |
| |
| try: |
| # Are we provisioning a remote or local payload? |
| if self.remote_payload: |
| # If no explicit label was provided, use the value of --payload. |
| if not label: |
| label = self.payload_path |
| |
| # Form the URL of the update payload. This assumes that the payload |
| # file name is a devserver constant (which currently is the case). |
| url = '/'.join(filter(None, [static_urlbase, label, UPDATE_FILE])) |
| |
| # Get remote payload attributes. |
| metadata_obj = self._GetRemotePayloadAttrs(url) |
| else: |
| static_image_dir = _NonePathJoin(self.static_dir, label) |
| rel_path = None |
| |
| # Serving files only, don't generate an update. |
| if not self.serve_only: |
| # Generate payload if necessary. |
| rel_path = self.GenerateUpdatePayload(board, client_version, |
| static_image_dir) |
| |
| url = '/'.join(filter(None, [static_urlbase, label, rel_path, |
| UPDATE_FILE])) |
| local_payload_dir = _NonePathJoin(static_image_dir, rel_path) |
| metadata_obj = self.GetLocalPayloadAttrs(local_payload_dir) |
| |
| except AutoupdateError as e: |
| # Raised if we fail to generate an update payload. |
| _Log('Failed to process an update: %r', e) |
| return autoupdate_lib.GetNoUpdateResponse(protocol) |
| |
| _Log('Responding to client to use url %s to get image', url) |
| return autoupdate_lib.GetUpdateResponse( |
| metadata_obj.sha1, metadata_obj.sha256, metadata_obj.size, url, |
| metadata_obj.is_delta_format, protocol, self.critical_update) |
| |
| def HandleHostInfoPing(self, ip): |
| """Returns host info dictionary for the given IP in JSON format.""" |
| assert ip, 'No ip provided.' |
| if ip in self.host_infos.table: |
| return json.dumps(self.host_infos.GetHostInfo(ip).attrs) |
| |
| def HandleHostLogPing(self, ip): |
| """Returns a complete log of events for host in JSON format.""" |
| # If all events requested, return a dictionary of logs keyed by IP address. |
| if ip == 'all': |
| return json.dumps( |
| dict([(key, self.host_infos.table[key].log) |
| for key in self.host_infos.table])) |
| |
| # Otherwise we're looking for a specific IP address, so find its log. |
| if ip in self.host_infos.table: |
| return json.dumps(self.host_infos.GetHostInfo(ip).log) |
| |
| # If no events were logged for this IP, return an empty log. |
| return json.dumps([]) |
| |
| def HandleSetUpdatePing(self, ip, label): |
| """Sets forced_update_label for a given host.""" |
| assert ip, 'No ip provided.' |
| assert label, 'No label provided.' |
| self.host_infos.GetInitHostInfo(ip).attrs['forced_update_label'] = label |
