diff options
Diffstat (limited to 'cloudinit')
| -rw-r--r-- | cloudinit/config/cc_phone_home.py | 5 | ||||
| -rw-r--r-- | cloudinit/ec2_utils.py | 180 | ||||
| -rw-r--r-- | cloudinit/sources/DataSourceCloudStack.py | 14 | ||||
| -rw-r--r-- | cloudinit/sources/DataSourceEc2.py | 16 | ||||
| -rw-r--r-- | cloudinit/sources/DataSourceMAAS.py | 45 | ||||
| -rw-r--r-- | cloudinit/url_helper.py | 247 | ||||
| -rw-r--r-- | cloudinit/user_data.py | 5 | ||||
| -rw-r--r-- | cloudinit/util.py | 83 |
8 files changed, 417 insertions, 178 deletions
diff --git a/cloudinit/config/cc_phone_home.py b/cloudinit/config/cc_phone_home.py index 886487f8..c873c8a8 100644 --- a/cloudinit/config/cc_phone_home.py +++ b/cloudinit/config/cc_phone_home.py @@ -19,7 +19,6 @@ # along with this program. If not, see <http://www.gnu.org/licenses/>. from cloudinit import templater -from cloudinit import url_helper as uhelp from cloudinit import util from cloudinit.settings import PER_INSTANCE @@ -112,7 +111,9 @@ def handle(name, cfg, cloud, log, args): } url = templater.render_string(url, url_params) try: - uhelp.readurl(url, data=real_submit_keys, retries=tries, sec_between=3) + util.read_file_or_url(url, data=real_submit_keys, + retries=tries, sec_between=3, + ssl_details=util.fetch_ssl_details(cloud.paths)) except: util.logexc(log, ("Failed to post phone home data to" " %s in %s tries"), url, tries) diff --git a/cloudinit/ec2_utils.py b/cloudinit/ec2_utils.py index 46b93f39..4812eccb 100644 --- a/cloudinit/ec2_utils.py +++ b/cloudinit/ec2_utils.py @@ -16,44 +16,142 @@ # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. -import boto.utils as boto_utils - -# Versions of boto >= 2.6.0 (and possibly 2.5.2) -# try to lazily load the metadata backing, which -# doesn't work so well in cloud-init especially -# since the metadata is serialized and actions are -# performed where the metadata server may be blocked -# (thus the datasource will start failing) resulting -# in url exceptions when fields that do exist (or -# would have existed) do not exist due to the blocking -# that occurred. - - -def _unlazy_dict(mp): - if not isinstance(mp, (dict)): - return mp - # Walk over the keys/values which - # forces boto to unlazy itself and - # has no effect on dictionaries that - # already have there items. - for (_k, v) in mp.items(): - _unlazy_dict(v) - return mp - - -def get_instance_userdata(api_version, metadata_address): - # Note: boto.utils.get_instance_metadata returns '' for empty string - # so the change from non-true to '' is not specifically necessary, but - # this way cloud-init will get consistent behavior even if boto changed - # in the future to return a None on "no user-data provided". - ud = boto_utils.get_instance_userdata(api_version, None, metadata_address) - if not ud: - ud = '' - return ud - - -def get_instance_metadata(api_version, metadata_address): - metadata = boto_utils.get_instance_metadata(api_version, metadata_address) - if not isinstance(metadata, (dict)): - metadata = {} - return _unlazy_dict(metadata) +from urlparse import (urlparse, urlunparse) + +import json +import urllib + +from cloudinit import log as logging +from cloudinit import util + +LOG = logging.getLogger(__name__) + + +def combine_url(base, add_on): + base_parsed = list(urlparse(base)) + path = base_parsed[2] + if path and not path.endswith("/"): + path += "/" + path += urllib.quote(str(add_on), safe="/:") + base_parsed[2] = path + return urlunparse(base_parsed) + + +# See: http://bit.ly/TyoUQs +# +# Since boto metadata reader uses the old urllib which does not +# support ssl, we need to ahead and create our own reader which +# works the same as the boto one (for now). +class MetadataMaterializer(object): + def __init__(self, blob, base_url, ssl_details): + self._blob = blob + self._md = None + self._base_url = base_url + self._ssl_details = ssl_details + + def _parse(self, blob): + leaves = {} + children = [] + if not blob: + return (leaves, children) + + def has_children(item): + if item.endswith("/"): + return True + else: + return False + + def get_name(item): + if item.endswith("/"): + return item.rstrip("/") + return item + + for field in blob.splitlines(): + field = field.strip() + field_name = get_name(field) + if not field or not field_name: + continue + if has_children(field): + if field_name not in children: + children.append(field_name) + else: + contents = field.split("=", 1) + resource = field_name + if len(contents) > 1: + # What a PITA... + (ident, sub_contents) = contents + checked_ident = util.safe_int(ident) + if checked_ident is not None: + resource = "%s/openssh-key" % (checked_ident) + field_name = sub_contents + leaves[field_name] = resource + return (leaves, children) + + def materialize(self): + if self._md is not None: + return self._md + self._md = self._materialize(self._blob, self._base_url) + return self._md + + def _fetch_url(self, url): + response = util.read_file_or_url(url, ssl_details=self._ssl_details) + return str(response) + + def _decode_leaf_blob(self, blob): + if not blob: + return blob + stripped_blob = blob.strip() + if stripped_blob.startswith("{") and stripped_blob.endswith("}"): + # Assume and try with json + try: + return json.loads(blob) + except (ValueError, TypeError): + pass + if blob.find("\n") != -1: + return blob.splitlines() + return blob + + def _materialize(self, blob, base_url): + (leaves, children) = self._parse(blob) + child_contents = {} + for c in children: + child_url = combine_url(base_url, c) + if not child_url.endswith("/"): + child_url += "/" + child_blob = self._fetch_url(child_url) + child_contents[c] = self._materialize(child_blob, child_url) + leaf_contents = {} + for (field, resource) in leaves.items(): + leaf_url = combine_url(base_url, resource) + leaf_blob = self._fetch_url(leaf_url) + leaf_contents[field] = self._decode_leaf_blob(leaf_blob) + joined = {} + joined.update(child_contents) + for field in leaf_contents.keys(): + if field in joined: + LOG.warn("Duplicate key found in results from %s", base_url) + else: + joined[field] = leaf_contents[field] + return joined + + +def get_instance_userdata(api_version, metadata_address, ssl_details=None): + ud_url = combine_url(metadata_address, api_version) + ud_url = combine_url(ud_url, 'user-data') + try: + response = util.read_file_or_url(ud_url, ssl_details=ssl_details) + return str(response) + except Exception: + util.logexc(LOG, "Failed fetching userdata from url %s", ud_url) + return None + +def get_instance_metadata(api_version, metadata_address, ssl_details=None): + md_url = combine_url(metadata_address, api_version) + md_url = combine_url(md_url, 'meta-data') + try: + response = util.read_file_or_url(md_url, ssl_details=ssl_details) + materializer = MetadataMaterializer(str(response), md_url, ssl_details) + return materializer.materialize() + except Exception: + util.logexc(LOG, "Failed fetching metadata from url %s", md_url) + return None diff --git a/cloudinit/sources/DataSourceCloudStack.py b/cloudinit/sources/DataSourceCloudStack.py index 81c8cda9..7fd38982 100644 --- a/cloudinit/sources/DataSourceCloudStack.py +++ b/cloudinit/sources/DataSourceCloudStack.py @@ -25,7 +25,7 @@ import os import time -from cloudinit import ec2_utils as ec2 +from cloudinit import ec2_utils from cloudinit import log as logging from cloudinit import sources from cloudinit import url_helper as uhelp @@ -101,10 +101,14 @@ class DataSourceCloudStack(sources.DataSource): if not self.wait_for_metadata_service(): return False start_time = time.time() - self.userdata_raw = ec2.get_instance_userdata(self.api_ver, - self.metadata_address) - self.metadata = ec2.get_instance_metadata(self.api_ver, - self.metadata_address) + md_addr = self.metadata_address + ssl_details = util.fetch_ssl_details(self.paths) + self.userdata_raw = ec2_utils.get_instance_userdata(self.api_ver, + md_addr, + ssl_details) + self.metadata = ec2_utils.get_instance_metadata(self.api_ver, + md_addr, + ssl_details) LOG.debug("Crawl of metadata service took %s seconds", int(time.time() - start_time)) return True diff --git a/cloudinit/sources/DataSourceEc2.py b/cloudinit/sources/DataSourceEc2.py index f010e640..0d62cf01 100644 --- a/cloudinit/sources/DataSourceEc2.py +++ b/cloudinit/sources/DataSourceEc2.py @@ -23,7 +23,7 @@ import os import time -from cloudinit import ec2_utils as ec2 +from cloudinit import ec2_utils from cloudinit import log as logging from cloudinit import sources from cloudinit import url_helper as uhelp @@ -61,10 +61,14 @@ class DataSourceEc2(sources.DataSource): if not self.wait_for_metadata_service(): return False start_time = time.time() - self.userdata_raw = ec2.get_instance_userdata(self.api_ver, - self.metadata_address) - self.metadata = ec2.get_instance_metadata(self.api_ver, - self.metadata_address) + md_addr = self.metadata_address + ssl_details = util.fetch_ssl_details(self.paths) + self.userdata_raw = ec2_utils.get_instance_userdata(self.api_ver, + md_addr, + ssl_details) + self.metadata = ec2_utils.get_instance_metadata(self.api_ver, + md_addr, + ssl_details) LOG.debug("Crawl of metadata service took %s seconds", int(time.time() - start_time)) return True @@ -133,7 +137,7 @@ class DataSourceEc2(sources.DataSource): start_time = time.time() url = uhelp.wait_for_url(urls=urls, max_wait=max_wait, - timeout=timeout, status_cb=LOG.warn) + timeout=timeout, status_cb=LOG.warn) if url: LOG.debug("Using metadata source: '%s'", url2base[url]) diff --git a/cloudinit/sources/DataSourceMAAS.py b/cloudinit/sources/DataSourceMAAS.py index 612d8ffa..de822924 100644 --- a/cloudinit/sources/DataSourceMAAS.py +++ b/cloudinit/sources/DataSourceMAAS.py @@ -27,7 +27,7 @@ import urllib2 from cloudinit import log as logging from cloudinit import sources -from cloudinit import url_helper as uhelp +from cloudinit import url_helper from cloudinit import util LOG = logging.getLogger(__name__) @@ -80,7 +80,8 @@ class DataSourceMAAS(sources.DataSource): self.base_url = url (userdata, metadata) = read_maas_seed_url(self.base_url, - self.md_headers) + self._md_headers, + paths=self.paths) self.userdata_raw = userdata self.metadata = metadata return True @@ -88,7 +89,7 @@ class DataSourceMAAS(sources.DataSource): util.logexc(LOG, "Failed fetching metadata from url %s", url) return False - def md_headers(self, url): + def _md_headers(self, url): mcfg = self.ds_cfg # If we are missing token_key, token_secret or consumer_key @@ -132,36 +133,37 @@ class DataSourceMAAS(sources.DataSource): starttime = time.time() check_url = "%s/%s/meta-data/instance-id" % (url, MD_VERSION) urls = [check_url] - url = uhelp.wait_for_url(urls=urls, max_wait=max_wait, - timeout=timeout, exception_cb=self._except_cb, - headers_cb=self.md_headers) + url = url_helper.wait_for_url(urls=urls, max_wait=max_wait, + timeout=timeout, + exception_cb=self._except_cb, + headers_cb=self._md_headers) if url: LOG.debug("Using metadata source: '%s'", url) else: LOG.critical("Giving up on md from %s after %i seconds", - urls, int(time.time() - starttime)) + urls, int(time.time() - starttime)) return bool(url) def _except_cb(self, msg, exception): - if not (isinstance(exception, urllib2.HTTPError) and + if not (isinstance(exception, url_helper.UrlError) and (exception.code == 403 or exception.code == 401)): return + if 'date' not in exception.headers: - LOG.warn("date field not in %d headers" % exception.code) + LOG.warn("Missing header 'date' in %s response", exception.code) return date = exception.headers['date'] - try: ret_time = time.mktime(parsedate(date)) - except: - LOG.warn("failed to convert datetime '%s'") + except Exception as e: + LOG.warn("Failed to convert datetime '%s': %s", date, e) return self.oauth_clockskew = int(ret_time - time.time()) - LOG.warn("set oauth clockskew to %d" % self.oauth_clockskew) + LOG.warn("Setting oauth clockskew to %d", self.oauth_clockskew) return @@ -189,11 +191,11 @@ def read_maas_seed_dir(seed_d): def read_maas_seed_url(seed_url, header_cb=None, timeout=None, - version=MD_VERSION): + version=MD_VERSION, paths=None): """ Read the maas datasource at seed_url. - header_cb is a method that should return a headers dictionary that will - be given to urllib2.Request() + - header_cb is a method that should return a headers dictionary for + a given url Expected format of seed_url is are the following files: * <seed_url>/<version>/meta-data/instance-id @@ -221,13 +223,17 @@ def read_maas_seed_url(seed_url, header_cb=None, timeout=None, else: headers = {} try: - resp = uhelp.readurl(url, headers=headers, timeout=timeout) + ssl_details = util.fetch_ssl_details(paths) + resp = util.read_file_or_url(url, + headers=headers, + timeout=timeout, + ssl_details=ssl_details) if resp.ok(): md[name] = str(resp) else: LOG.warn(("Fetching from %s resulted in" " an invalid http code %s"), url, resp.code) - except urllib2.HTTPError as e: + except url_helper.UrlError as e: if e.code != 404: raise return check_seed_contents(md, seed_url) @@ -370,7 +376,8 @@ if __name__ == "__main__": if args.subcmd == "check-seed": if args.url.startswith("http"): (userdata, metadata) = read_maas_seed_url(args.url, - header_cb=my_headers, version=args.apiver) + header_cb=my_headers, + version=args.apiver) else: (userdata, metadata) = read_maas_seed_url(args.url) print "=== userdata ===" diff --git a/cloudinit/url_helper.py b/cloudinit/url_helper.py index f3e3fd7e..bfc5cfdd 100644 --- a/cloudinit/url_helper.py +++ b/cloudinit/url_helper.py @@ -20,43 +20,55 @@ # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. -from contextlib import closing - -import errno -import socket import time -import urllib -import urllib2 + +import requests +from requests import exceptions + +from urlparse import (urlparse, urlunparse) from cloudinit import log as logging from cloudinit import version LOG = logging.getLogger(__name__) +# Check if requests has ssl support (added in requests >= 0.8.8) +SSL_ENABLED = False +CONFIG_ENABLED = False # This was added in 0.7 (but taken out in >=1.0) +try: + import pkg_resources + from distutils.version import LooseVersion + _REQ = pkg_resources.get_distribution('requests') + _REQ_VER = LooseVersion(_REQ.version) + if _REQ_VER >= LooseVersion('0.8.8'): + SSL_ENABLED = True + if _REQ_VER >= LooseVersion('0.7.0') and _REQ_VER < LooseVersion('1.0.0'): + CONFIG_ENABLED = True +except: + pass + + +def _cleanurl(url): + parsed_url = list(urlparse(url, scheme='http')) + if not parsed_url[1] and parsed_url[2]: + # Swap these since this seems to be a common + # occurrence when given urls like 'www.google.com' + parsed_url[1] = parsed_url[2] + parsed_url[2] = '' + return urlunparse(parsed_url) -class UrlResponse(object): - def __init__(self, status_code, contents=None, headers=None): - self._status_code = status_code - self._contents = contents - self._headers = headers - @property - def code(self): - return self._status_code +class UrlResponse(object): + def __init__(self, response): + self._response = response @property def contents(self): - return self._contents + return self._response.content @property - def headers(self): - return self._headers - - def __str__(self): - if not self.contents: - return '' - else: - return str(self.contents) + def url(self): + return self._response.url def ok(self, redirects_ok=False): upper = 300 @@ -67,72 +79,111 @@ class UrlResponse(object): else: return False + @property + def headers(self): + return self._response.headers -def readurl(url, data=None, timeout=None, - retries=0, sec_between=1, headers=None): - - req_args = {} - req_args['url'] = url - if data is not None: - req_args['data'] = urllib.urlencode(data) + @property + def code(self): + return self._response.status_code + def __str__(self): + return self.contents + + +class UrlError(IOError): + def __init__(self, cause, code=None, headers=None): + IOError.__init__(self, str(cause)) + self.cause = cause + self.code = code + self.headers = headers + if self.headers is None: + self.headers = {} + + +def readurl(url, data=None, timeout=None, retries=0, sec_between=1, + headers=None, ssl_details=None, check_status=True, + allow_redirects=False): + url = _cleanurl(url) + req_args = { + 'url': url, + } + if urlparse(url).scheme == 'https' and ssl_details: + if not SSL_ENABLED: + LOG.warn("SSL is not enabled, cert. verification can not occur!") + else: + if 'ca_certs' in ssl_details and ssl_details['ca_certs']: + req_args['verify'] = ssl_details['ca_certs'] + else: + req_args['verify'] = True + if 'cert_file' in ssl_details and 'key_file' in ssl_details: + req_args['cert'] = [ssl_details['cert_file'], + ssl_details['key_file']] + elif 'cert_file' in ssl_details: + req_args['cert'] = str(ssl_details['cert_file']) + + req_args['allow_redirects'] = allow_redirects + req_args['method'] = 'GET' + if timeout is not None: + req_args['timeout'] = max(float(timeout), 0) + if data: + req_args['method'] = 'POST' + # It doesn't seem like config + # was added in older library versions (or newer ones either), thus we + # need to manually do the retries if it wasn't... + if CONFIG_ENABLED: + req_config = { + 'store_cookies': False, + } + # Don't use the retry support built-in + # since it doesn't allow for 'sleep_times' + # in between tries.... + # if retries: + # req_config['max_retries'] = max(int(retries), 0) + req_args['config'] = req_config + manual_tries = 1 + if retries: + manual_tries = max(int(retries) + 1, 1) if not headers: headers = { 'User-Agent': 'Cloud-Init/%s' % (version.version_string()), } - req_args['headers'] = headers - req = urllib2.Request(**req_args) - - retries = max(retries, 0) - attempts = retries + 1 - - excepts = [] - LOG.debug(("Attempting to open '%s' with %s attempts" - " (%s retries, timeout=%s) to be performed"), - url, attempts, retries, timeout) - open_args = {} - if timeout is not None: - open_args['timeout'] = int(timeout) - for i in range(0, attempts): + LOG.debug("Attempting to open '%s' with %s configuration", url, req_args) + if data: + # Do this after the log (it might be large) + req_args['data'] = data + if sec_between is None: + sec_between = -1 + excps = [] + # Handle retrying ourselves since the built-in support + # doesn't handle sleeping between tries... + for i in range(0, manual_tries): try: - with closing(urllib2.urlopen(req, **open_args)) as rh: - content = rh.read() - status = rh.getcode() - if status is None: - # This seems to happen when files are read... - status = 200 - headers = {} - if rh.headers: - headers = dict(rh.headers) - LOG.debug("Read from %s (%s, %sb) after %s attempts", - url, status, len(content), (i + 1)) - return UrlResponse(status, content, headers) - except urllib2.HTTPError as e: - excepts.append(e) - except urllib2.URLError as e: - # This can be a message string or - # another exception instance - # (socket.error for remote URLs, OSError for local URLs). - if (isinstance(e.reason, (OSError)) and - e.reason.errno == errno.ENOENT): - excepts.append(e.reason) + r = requests.request(**req_args) + if check_status: + r.raise_for_status() + LOG.debug("Read from %s (%s, %sb) after %s attempts", url, + r.status_code, len(r.content), (i + 1)) + # Doesn't seem like we can make it use a different + # subclass for responses, so add our own backward-compat + # attrs + return UrlResponse(r) + except exceptions.RequestException as e: + if (isinstance(e, (exceptions.HTTPError)) + and hasattr(e, 'response') # This appeared in v 0.10.8 + and e.response): + excps.append(UrlError(e, code=e.response.status_code, + headers=e.response.headers)) else: - excepts.append(e) - except Exception as e: - excepts.append(e) - if i + 1 < attempts: - LOG.debug("Please wait %s seconds while we wait to try again", - sec_between) - time.sleep(sec_between) - - # Didn't work out - LOG.debug("Failed reading from %s after %s attempts", url, attempts) - - # It must of errored at least once for code - # to get here so re-raise the last error - LOG.debug("%s errors occured, re-raising the last one", len(excepts)) - raise excepts[-1] + excps.append(UrlError(e)) + if i + 1 < manual_tries and sec_between > 0: + LOG.debug("Please wait %s seconds while we wait to try again", + sec_between) + time.sleep(sec_between) + if excps: + raise excps[-1] + return None # Should throw before this... def wait_for_url(urls, max_wait=None, timeout=None, @@ -143,7 +194,7 @@ def wait_for_url(urls, max_wait=None, timeout=None, max_wait: roughly the maximum time to wait before giving up The max time is *actually* len(urls)*timeout as each url will be tried once and given the timeout provided. - timeout: the timeout provided to urllib2.urlopen + timeout: the timeout provided to urlopen status_cb: call method with string message when a url is not available headers_cb: call method with single argument of url to get headers for request. @@ -190,36 +241,40 @@ def wait_for_url(urls, max_wait=None, timeout=None, timeout = int((start_time + max_wait) - now) reason = "" + e = None try: if headers_cb is not None: headers = headers_cb(url) else: headers = {} - resp = readurl(url, headers=headers, timeout=timeout) - if not resp.contents: - reason = "empty response [%s]" % (resp.code) - e = ValueError(reason) - elif not resp.ok(): - reason = "bad status code [%s]" % (resp.code) - e = ValueError(reason) + response = readurl(url, headers=headers, timeout=timeout, + check_status=False) + if not response.contents: + reason = "empty response [%s]" % (response.code) + e = UrlError(ValueError(reason), + code=response.code, headers=response.headers) + elif not response.ok(): + reason = "bad status code [%s]" % (response.code) + e = UrlError(ValueError(reason), + code=response.code, headers=response.headers) else: return url - except urllib2.HTTPError as e: - reason = "http error [%s]" % e.code - except urllib2.URLError as e: - reason = "url error [%s]" % e.reason - except socket.timeout as e: - reason = "socket timeout [%s]" % e + except UrlError as e: + reason = "request error [%s]" % e except Exception as e: reason = "unexpected error [%s]" % e time_taken = int(time.time() - start_time) status_msg = "Calling '%s' failed [%s/%ss]: %s" % (url, - time_taken, - max_wait, reason) + time_taken, + max_wait, + reason) status_cb(status_msg) if exception_cb: + # This can be used to alter the headers that will be sent + # in the future, for example this is what the MAAS datasource + # does. exception_cb(msg=status_msg, exception=e) if timeup(max_wait, start_time): diff --git a/cloudinit/user_data.py b/cloudinit/user_data.py index 58827e3d..df069ff8 100644 --- a/cloudinit/user_data.py +++ b/cloudinit/user_data.py @@ -29,7 +29,6 @@ from email.mime.text import MIMEText from cloudinit import handlers from cloudinit import log as logging -from cloudinit import url_helper from cloudinit import util LOG = logging.getLogger(__name__) @@ -60,6 +59,7 @@ EXAMINE_FOR_LAUNCH_INDEX = ["text/cloud-config"] class UserDataProcessor(object): def __init__(self, paths): self.paths = paths + self.ssl_details = util.fetch_ssl_details(paths) def process(self, blob): accumulating_msg = MIMEMultipart() @@ -173,7 +173,8 @@ class UserDataProcessor(object): if include_once_on and os.path.isfile(include_once_fn): content = util.load_file(include_once_fn) else: - resp = url_helper.readurl(include_url) + resp = util.read_file_or_url(include_url, + ssl_details=self.ssl_details) if include_once_on and resp.ok(): util.write_file(include_once_fn, str(resp), mode=0600) if resp.ok(): diff --git a/cloudinit/util.py b/cloudinit/util.py index 636ed20e..52b528ea 100644 --- a/cloudinit/util.py +++ b/cloudinit/util.py @@ -51,8 +51,8 @@ from cloudinit import importer from cloudinit import log as logging from cloudinit import mergers from cloudinit import safeyaml +from cloudinit import url_helper from cloudinit import type_utils -from cloudinit import url_helper as uhelp from cloudinit import version from cloudinit.settings import (CFG_BUILTIN) @@ -71,6 +71,31 @@ FN_ALLOWED = ('_-.()' + string.digits + string.ascii_letters) CONTAINER_TESTS = ['running-in-container', 'lxc-is-container'] +# Made to have same accessors as UrlResponse so that the +# read_file_or_url can return this or that object and the +# 'user' of those objects will not need to know the difference. +class StringResponse(object): + def __init__(self, contents, code=200): + self.code = code + self.headers = {} + self.contents = contents + self.url = None + + def ok(self, *args, **kwargs): + if self.code != 200: + return False + return True + + def __str__(self): + return self.contents + + +class FileResponse(StringResponse): + def __init__(self, path, contents, code=200): + StringResponse.__init__(self, contents, code=code) + self.url = path + + class ProcessExecutionError(IOError): MESSAGE_TMPL = ('%(description)s\n' @@ -606,18 +631,62 @@ def read_optional_seed(fill, base="", ext="", timeout=5): fill['user-data'] = ud fill['meta-data'] = md return True - except OSError as e: + except IOError as e: if e.errno == errno.ENOENT: return False raise -def read_file_or_url(url, timeout=5, retries=10, file_retries=0): +def fetch_ssl_details(paths=None): + ssl_details = {} + # Lookup in these locations for ssl key/cert files + ssl_cert_paths = [ + '/var/lib/cloud/data/ssl', + '/var/lib/cloud/instance/data/ssl', + ] + if paths: + ssl_cert_paths.extend([ + os.path.join(paths.get_ipath_cur('data'), 'ssl'), + os.path.join(paths.get_cpath('data'), 'ssl'), + ]) + ssl_cert_paths = uniq_merge(ssl_cert_paths) + ssl_cert_paths = [d for d in ssl_cert_paths if d and os.path.isdir(d)] + cert_file = None + for d in ssl_cert_paths: + if os.path.isfile(os.path.join(d, 'cert.pem')): + cert_file = os.path.join(d, 'cert.pem') + break + key_file = None + for d in ssl_cert_paths: + if os.path.isfile(os.path.join(d, 'key.pem')): + key_file = os.path.join(d, 'key.pem') + break + if cert_file and key_file: + ssl_details['cert_file'] = cert_file + ssl_details['key_file'] = key_file + elif cert_file: + ssl_details['cert_file'] = cert_file + return ssl_details + + +def read_file_or_url(url, timeout=5, retries=10, + headers=None, data=None, sec_between=1, ssl_details=None): + url = url.lstrip() if url.startswith("/"): url = "file://%s" % url - if url.startswith("file://"): - retries = file_retries - return uhelp.readurl(url, timeout=timeout, retries=retries) + if url.lower().startswith("file://"): + if data: + LOG.warn("Unable to post data to file resource %s", url) + file_path = url[len("file://"):] + return FileResponse(file_path, contents=load_file(file_path)) + else: + return url_helper.readurl(url, + timeout=timeout, + retries=retries, + headers=headers, + data=data, + sec_between=sec_between, + ssl_details=ssl_details) def load_yaml(blob, default=None, allowed=(dict,)): @@ -834,7 +903,7 @@ def get_cmdline_url(names=('cloud-config-url', 'url'), if not url: return (None, None, None) - resp = uhelp.readurl(url) + resp = read_file_or_url(url) if resp.contents.startswith(starts) and resp.ok(): return (key, url, str(resp)) |