mirror of
https://github.com/facebook/sapling.git
synced 2024-10-10 08:47:12 +03:00
ee6b575238
It's preferable to report "ssl required" as an error, so that the client can detect error and exit with 255. Currently hg exits with 1, which is "nothing to push."
187 lines
6.2 KiB
Python
187 lines
6.2 KiB
Python
# hgweb/common.py - Utility functions needed by hgweb_mod and hgwebdir_mod
|
|
#
|
|
# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
|
|
# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
|
|
#
|
|
# This software may be used and distributed according to the terms of the
|
|
# GNU General Public License version 2 or any later version.
|
|
|
|
import errno, mimetypes, os
|
|
|
|
HTTP_OK = 200
|
|
HTTP_NOT_MODIFIED = 304
|
|
HTTP_BAD_REQUEST = 400
|
|
HTTP_UNAUTHORIZED = 401
|
|
HTTP_FORBIDDEN = 403
|
|
HTTP_NOT_FOUND = 404
|
|
HTTP_METHOD_NOT_ALLOWED = 405
|
|
HTTP_SERVER_ERROR = 500
|
|
|
|
|
|
def checkauthz(hgweb, req, op):
|
|
'''Check permission for operation based on request data (including
|
|
authentication info). Return if op allowed, else raise an ErrorResponse
|
|
exception.'''
|
|
|
|
user = req.env.get('REMOTE_USER')
|
|
|
|
deny_read = hgweb.configlist('web', 'deny_read')
|
|
if deny_read and (not user or deny_read == ['*'] or user in deny_read):
|
|
raise ErrorResponse(HTTP_UNAUTHORIZED, 'read not authorized')
|
|
|
|
allow_read = hgweb.configlist('web', 'allow_read')
|
|
result = (not allow_read) or (allow_read == ['*'])
|
|
if not (result or user in allow_read):
|
|
raise ErrorResponse(HTTP_UNAUTHORIZED, 'read not authorized')
|
|
|
|
if op == 'pull' and not hgweb.allowpull:
|
|
raise ErrorResponse(HTTP_UNAUTHORIZED, 'pull not authorized')
|
|
elif op == 'pull' or op is None: # op is None for interface requests
|
|
return
|
|
|
|
# enforce that you can only push using POST requests
|
|
if req.env['REQUEST_METHOD'] != 'POST':
|
|
msg = 'push requires POST request'
|
|
raise ErrorResponse(HTTP_METHOD_NOT_ALLOWED, msg)
|
|
|
|
# require ssl by default for pushing, auth info cannot be sniffed
|
|
# and replayed
|
|
scheme = req.env.get('wsgi.url_scheme')
|
|
if hgweb.configbool('web', 'push_ssl', True) and scheme != 'https':
|
|
raise ErrorResponse(HTTP_FORBIDDEN, 'ssl required')
|
|
|
|
deny = hgweb.configlist('web', 'deny_push')
|
|
if deny and (not user or deny == ['*'] or user in deny):
|
|
raise ErrorResponse(HTTP_UNAUTHORIZED, 'push not authorized')
|
|
|
|
allow = hgweb.configlist('web', 'allow_push')
|
|
result = allow and (allow == ['*'] or user in allow)
|
|
if not result:
|
|
raise ErrorResponse(HTTP_UNAUTHORIZED, 'push not authorized')
|
|
|
|
# Hooks for hgweb permission checks; extensions can add hooks here.
|
|
# Each hook is invoked like this: hook(hgweb, request, operation),
|
|
# where operation is either read, pull or push. Hooks should either
|
|
# raise an ErrorResponse exception, or just return.
|
|
#
|
|
# It is possible to do both authentication and authorization through
|
|
# this.
|
|
permhooks = [checkauthz]
|
|
|
|
|
|
class ErrorResponse(Exception):
|
|
def __init__(self, code, message=None, headers=[]):
|
|
if message is None:
|
|
message = _statusmessage(code)
|
|
Exception.__init__(self)
|
|
self.code = code
|
|
self.message = message
|
|
self.headers = headers
|
|
def __str__(self):
|
|
return self.message
|
|
|
|
class continuereader(object):
|
|
def __init__(self, f, write):
|
|
self.f = f
|
|
self._write = write
|
|
self.continued = False
|
|
|
|
def read(self, amt=-1):
|
|
if not self.continued:
|
|
self.continued = True
|
|
self._write('HTTP/1.1 100 Continue\r\n\r\n')
|
|
return self.f.read(amt)
|
|
|
|
def __getattr__(self, attr):
|
|
if attr in ('close', 'readline', 'readlines', '__iter__'):
|
|
return getattr(self.f, attr)
|
|
raise AttributeError
|
|
|
|
def _statusmessage(code):
|
|
from BaseHTTPServer import BaseHTTPRequestHandler
|
|
responses = BaseHTTPRequestHandler.responses
|
|
return responses.get(code, ('Error', 'Unknown error'))[0]
|
|
|
|
def statusmessage(code, message=None):
|
|
return '%d %s' % (code, message or _statusmessage(code))
|
|
|
|
def get_stat(spath):
|
|
"""stat changelog if it exists, spath otherwise"""
|
|
cl_path = os.path.join(spath, "00changelog.i")
|
|
if os.path.exists(cl_path):
|
|
return os.stat(cl_path)
|
|
else:
|
|
return os.stat(spath)
|
|
|
|
def get_mtime(spath):
|
|
return get_stat(spath).st_mtime
|
|
|
|
def staticfile(directory, fname, req):
|
|
"""return a file inside directory with guessed Content-Type header
|
|
|
|
fname always uses '/' as directory separator and isn't allowed to
|
|
contain unusual path components.
|
|
Content-Type is guessed using the mimetypes module.
|
|
Return an empty string if fname is illegal or file not found.
|
|
|
|
"""
|
|
parts = fname.split('/')
|
|
for part in parts:
|
|
if (part in ('', os.curdir, os.pardir) or
|
|
os.sep in part or os.altsep is not None and os.altsep in part):
|
|
return ""
|
|
fpath = os.path.join(*parts)
|
|
if isinstance(directory, str):
|
|
directory = [directory]
|
|
for d in directory:
|
|
path = os.path.join(d, fpath)
|
|
if os.path.exists(path):
|
|
break
|
|
try:
|
|
os.stat(path)
|
|
ct = mimetypes.guess_type(path)[0] or "text/plain"
|
|
req.respond(HTTP_OK, ct, length = os.path.getsize(path))
|
|
fp = open(path, 'rb')
|
|
data = fp.read()
|
|
fp.close()
|
|
return data
|
|
except TypeError:
|
|
raise ErrorResponse(HTTP_SERVER_ERROR, 'illegal filename')
|
|
except OSError, err:
|
|
if err.errno == errno.ENOENT:
|
|
raise ErrorResponse(HTTP_NOT_FOUND)
|
|
else:
|
|
raise ErrorResponse(HTTP_SERVER_ERROR, err.strerror)
|
|
|
|
def paritygen(stripecount, offset=0):
|
|
"""count parity of horizontal stripes for easier reading"""
|
|
if stripecount and offset:
|
|
# account for offset, e.g. due to building the list in reverse
|
|
count = (stripecount + offset) % stripecount
|
|
parity = (stripecount + offset) / stripecount & 1
|
|
else:
|
|
count = 0
|
|
parity = 0
|
|
while True:
|
|
yield parity
|
|
count += 1
|
|
if stripecount and count >= stripecount:
|
|
parity = 1 - parity
|
|
count = 0
|
|
|
|
def get_contact(config):
|
|
"""Return repo contact information or empty string.
|
|
|
|
web.contact is the primary source, but if that is not set, try
|
|
ui.username or $EMAIL as a fallback to display something useful.
|
|
"""
|
|
return (config("web", "contact") or
|
|
config("ui", "username") or
|
|
os.environ.get("EMAIL") or "")
|
|
|
|
def caching(web, req):
|
|
tag = str(web.mtime)
|
|
if req.env.get('HTTP_IF_NONE_MATCH') == tag:
|
|
raise ErrorResponse(HTTP_NOT_MODIFIED)
|
|
req.headers.append(('ETag', tag))
|