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coreapi.py
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coreapi.py
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"""
sentry.coreapi
~~~~~~~~~~~~~~
:copyright: (c) 2010-2012 by the Sentry Team, see AUTHORS for more details.
:license: BSD, see LICENSE for more details.
"""
# TODO: We should make the API a class, and UDP/HTTP just inherit from it
# This will make it so we can more easily control logging with various
# metadata (rather than generic log messages which arent useful).
from datetime import datetime
import base64
import logging
import time
import uuid
import zlib
from django.utils.encoding import smart_str
from sentry.conf import settings
from sentry.exceptions import InvalidData, InvalidInterface
from sentry.models import Group, ProjectMember
from sentry.queue.client import delay
from sentry.utils import is_float, json
from sentry.utils.auth import get_signature, parse_auth_header
logger = logging.getLogger('sentry.errors.coreapi')
class InvalidTimestamp(ValueError):
pass
class APIError(Exception):
http_status = 400
msg = 'Invalid request'
def __init__(self, msg=None):
if msg:
self.msg = msg
class APIUnauthorized(APIError):
http_status = 401
msg = 'Unauthorized'
class APIForbidden(APIError):
http_status = 403
class APITimestampExpired(APIError):
http_status = 410
def extract_auth_vars(request):
if request.META.get('HTTP_X_SENTRY_AUTH', '').startswith('Sentry'):
# Auth version 3.0 (same as 2.0, diff header)
return parse_auth_header(request.META['HTTP_X_SENTRY_AUTH'])
elif request.META.get('HTTP_AUTHORIZATION', '').startswith('Sentry'):
# Auth version 2.0
return parse_auth_header(request.META['HTTP_AUTHORIZATION'])
else:
return None
def project_from_auth_vars(auth_vars, data):
signature = auth_vars.get('sentry_signature')
timestamp = auth_vars.get('sentry_timestamp')
api_key = auth_vars.get('sentry_key')
if not signature or not timestamp:
raise APIUnauthorized()
if api_key:
try:
pm = ProjectMember.objects.get(public_key=api_key)
except ProjectMember.DoesNotExist:
raise APIForbidden('Invalid signature')
project = pm.project
secret_key = pm.secret_key
else:
project = None
secret_key = settings.KEY
validate_hmac(data, signature, timestamp, secret_key)
return project
def validate_hmac(message, signature, timestamp, secret_key):
try:
timestamp_float = float(timestamp)
except ValueError:
raise APIError('Invalid timestamp')
if timestamp_float < time.time() - 3600: # 1 hour
raise APITimestampExpired('Message has expired')
sig_hmac = get_signature(message, timestamp, secret_key)
if sig_hmac != signature:
raise APIForbidden('Invalid signature')
def project_from_api_key_and_id(api_key, project_id):
"""
Given a public api key and a project id returns
a project instance or throws APIUnauthorized.
"""
try:
pm = ProjectMember.objects.get(public_key=api_key, project=project_id)
except ProjectMember.DoesNotExist:
raise APIUnauthorized()
return pm.project
def project_from_id(request):
"""
Given a request returns a project instance or throws
APIUnauthorized.
"""
try:
pm = ProjectMember.objects.get(
user=request.user,
project=request.GET['project_id'],
)
except ProjectMember.DoesNotExist:
raise APIUnauthorized()
return pm.project
def decode_and_decompress_data(encoded_data):
try:
try:
return base64.b64decode(encoded_data).decode('zlib')
except zlib.error:
return base64.b64decode(encoded_data)
except Exception, e:
# This error should be caught as it suggests that there's a
# bug somewhere in the client's code.
logger.exception('Bad data received')
raise APIForbidden('Bad data decoding request (%s, %s)' % (
e.__class__.__name__, e))
def safely_load_json_string(json_string):
try:
obj = json.loads(json_string)
except Exception, e:
# This error should be caught as it suggests that there's a
# bug somewhere in the client's code.
logger.exception('Bad data received')
raise APIForbidden('Bad data reconstructing object (%s, %s)' % (
e.__class__.__name__, e))
# XXX: ensure keys are coerced to strings
return dict((smart_str(k), v) for k, v in obj.iteritems())
def ensure_valid_project_id(desired_project, data):
# Confirm they're using either the master key, or their specified project
# matches with the signed project.
if desired_project and str(data.get('project', '')) != str(desired_project.pk):
raise APIForbidden('Invalid credentials')
elif not desired_project:
data['project'] = 1
def process_data_timestamp(data):
if is_float(data['timestamp']):
try:
data['timestamp'] = datetime.fromtimestamp(float(data['timestamp']))
except:
logger.exception('Failed reading timestamp')
del data['timestamp']
elif not isinstance(data['timestamp'], datetime):
if '.' in data['timestamp']:
format = '%Y-%m-%dT%H:%M:%S.%f'
else:
format = '%Y-%m-%dT%H:%M:%S'
if 'Z' in data['timestamp']:
# support UTC market, but not other timestamps
format += 'Z'
try:
data['timestamp'] = datetime.strptime(data['timestamp'], format)
except:
raise InvalidTimestamp('Invalid value for timestamp: %r' % data['timestamp'])
return data
def validate_data(project, data):
ensure_valid_project_id(project, data)
if 'event_id' not in data:
data['event_id'] = uuid.uuid4().hex
if 'timestamp' in data:
process_data_timestamp(data)
return data
def really_insert_data(data):
try:
Group.objects.from_kwargs(**data)
except (InvalidInterface, InvalidData), e:
raise APIError(e)
def insert_data_to_database(data):
delay(really_insert_data, data)