65 lines
2.2 KiB
Python
65 lines
2.2 KiB
Python
import falcon
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import logging
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import re
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from xattr import setxattr, listxattr, removexattr, getxattr
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from certidude import push
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from certidude.decorators import serialize, csrf_protection
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from .utils.firewall import login_required, authorize_admin, whitelist_subject
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logger = logging.getLogger(__name__)
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class AttributeResource(object):
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def __init__(self, authority, namespace):
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self.authority = authority
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self.namespace = namespace
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@serialize
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@login_required
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@authorize_admin
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def on_get(self, req, resp, cn):
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"""
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Return extended attributes stored on the server.
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This not only contains tags and lease information,
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but might also contain some other sensitive information.
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"""
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try:
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path, buf, cert, attribs = self.authority.get_attributes(cn,
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namespace=self.namespace, flat=True)
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except IOError:
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raise falcon.HTTPNotFound()
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else:
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return attribs
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@csrf_protection
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@whitelist_subject
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def on_post(self, req, resp, cn):
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namespace = ("user.%s." % self.namespace).encode("ascii")
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try:
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path, buf, cert, signed, expires = self.authority.get_signed(cn)
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except IOError:
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raise falcon.HTTPNotFound()
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else:
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for key in req.params:
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if not re.match("[a-z0-9_\.]+$", key):
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raise falcon.HTTPBadRequest("Invalid key %s" % key)
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valid = set()
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modified = False
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for key, value in req.params.items():
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identifier = ("user.%s.%s" % (self.namespace, key)).encode("ascii")
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try:
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if getxattr(path, identifier).decode("utf-8") != value:
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modified = True
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except OSError: # no such attribute
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pass
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setxattr(path, identifier, value.encode("utf-8"))
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valid.add(identifier)
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for key in listxattr(path):
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if not key.startswith(namespace):
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continue
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if key not in valid:
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modified = True
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removexattr(path, key)
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if modified:
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push.publish("attribute-update", cn)
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