bundlewrap/items/download.py

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2020-08-20 12:33:49 +00:00
from bundlewrap.items import Item, ItemStatus
from bundlewrap.exceptions import BundleError
from bundlewrap.utils.text import force_text, mark_for_translation as _
from bundlewrap.utils.remote import PathInfo
import types
from pipes import quote
# Original file: https://github.com/bundlewrap/plugins/blob/master/item_download/items/download.py
# BW4 does not support plugins anymore, thus we download it manually.
class Download(Item):
"""
Download a file and verify its Hash.
"""
BUNDLE_ATTRIBUTE_NAME = "downloads"
NEEDS_STATIC = [
"pkg_apt:",
"pkg_pacman:",
"pkg_yum:",
"pkg_zypper:",
]
ITEM_ATTRIBUTES = {
'url': "",
'sha256': "",
'verifySSL': True,
}
ITEM_TYPE_NAME = "download"
REQUIRED_ATTRIBUTES = []
def __repr__(self):
return "<Download name:{}>".format(self.name)
def __hash_remote_file(self, filename):
path_info = PathInfo(self.node, filename)
if not path_info.is_file:
return None
if hasattr(path_info, 'sha256'):
return path_info.sha256
else:
""""pending pr so do it manualy"""
if self.node.os == 'macos':
result = self.node.run("shasum -a 256 -- {}".format(quote(filename)))
elif self.node.os in self.node.OS_FAMILY_BSD:
result = self.node.run("sha256 -q -- {}".format(quote(filename)))
else:
result = self.node.run("sha256sum -- {}".format(quote(filename)))
return force_text(result.stdout).strip().split()[0]
def fix(self, status):
if status.must_be_deleted:
# Not possible
pass
else:
# download file
self.node.run("curl -L {verify}-s -o {file} -- {url}".format(
verify="" if self.attributes.get('verifySSL', True) else "-k ",
file=quote(self.name),
url=quote(self.attributes['url'])
))
# check hash
sha256 = self.__hash_remote_file(self.name)
if sha256 != self.attributes['sha256']:
# unlink file
self.node.run("rm -rf -- {}".format(quote(self.name)))
return False
def cdict(self):
"""This is how the world should be"""
cdict = {
'type': 'download',
'sha256': self.attributes['sha256'],
}
return cdict
def sdict(self):
"""This is how the world is right now"""
path_info = PathInfo(self.node, self.name)
if not path_info.exists:
return None
else:
sdict = {
'type': 'download',
'sha256': self.__hash_remote_file(self.name)
}
return sdict
@classmethod
def validate_attributes(cls, bundle, item_id, attributes):
if 'sha256' not in attributes:
raise BundleError(_(
"at least one hash must be set on {item} in bundle '{bundle}'"
).format(
bundle=bundle.name,
item=item_id,
))
if 'url' not in attributes:
raise BundleError(_(
"you need to specify the url on {item} in bundle '{bundle}'"
).format(
bundle=bundle.name,
item=item_id,
))
def get_auto_deps(self, items):
deps = []
for item in items:
# debian TODO: add other package manager
if item.ITEM_TYPE_NAME == 'pkg_apt' and item.name == 'curl':
deps.append(item.id)
return deps