Mercurial > hg
view tests/httpserverauth.py @ 45235:b65b4b09859c
commitctx: treat `filesadded` more like `filesremoved`
Accumulating the filename in a list will have a negligible cost and deal with
the list of added files like the other ones will make is code cleaning simpler.
The two variable with very close name is not great, but my plan is to split most
of the code in a separated function which will make the "problem" go away by
itself.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Thu, 23 Jul 2020 23:08:00 +0200 |
parents | 2372284d9457 |
children | 6000f5b25c9b |
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from __future__ import absolute_import import base64 import hashlib from mercurial.hgweb import common from mercurial import node def parse_keqv_list(req, l): """Parse list of key=value strings where keys are not duplicated.""" parsed = {} for elt in l: k, v = elt.split(b'=', 1) if v[0:1] == b'"' and v[-1:] == b'"': v = v[1:-1] parsed[k] = v return parsed class digestauthserver(object): def __init__(self): self._user_hashes = {} def gethashers(self): def _md5sum(x): m = hashlib.md5() m.update(x) return node.hex(m.digest()) h = _md5sum kd = lambda s, d, h=h: h(b"%s:%s" % (s, d)) return h, kd def adduser(self, user, password, realm): h, kd = self.gethashers() a1 = h(b'%s:%s:%s' % (user, realm, password)) self._user_hashes[(user, realm)] = a1 def makechallenge(self, realm): # We aren't testing the protocol here, just that the bytes make the # proper round trip. So hardcoded seems fine. nonce = b'064af982c5b571cea6450d8eda91c20d' return b'realm="%s", nonce="%s", algorithm=MD5, qop="auth"' % ( realm, nonce, ) def checkauth(self, req, header): log = req.rawenv[b'wsgi.errors'] h, kd = self.gethashers() resp = parse_keqv_list(req, header.split(b', ')) if resp.get(b'algorithm', b'MD5').upper() != b'MD5': log.write(b'Unsupported algorithm: %s' % resp.get(b'algorithm')) raise common.ErrorResponse( common.HTTP_FORBIDDEN, b"unknown algorithm" ) user = resp[b'username'] realm = resp[b'realm'] nonce = resp[b'nonce'] ha1 = self._user_hashes.get((user, realm)) if not ha1: log.write(b'No hash found for user/realm "%s/%s"' % (user, realm)) raise common.ErrorResponse(common.HTTP_FORBIDDEN, b"bad user") qop = resp.get(b'qop', b'auth') if qop != b'auth': log.write(b"Unsupported qop: %s" % qop) raise common.ErrorResponse(common.HTTP_FORBIDDEN, b"bad qop") cnonce, ncvalue = resp.get(b'cnonce'), resp.get(b'nc') if not cnonce or not ncvalue: log.write(b'No cnonce (%s) or ncvalue (%s)' % (cnonce, ncvalue)) raise common.ErrorResponse(common.HTTP_FORBIDDEN, b"no cnonce") a2 = b'%s:%s' % (req.method, resp[b'uri']) noncebit = b"%s:%s:%s:%s:%s" % (nonce, ncvalue, cnonce, qop, h(a2)) respdig = kd(ha1, noncebit) if respdig != resp[b'response']: log.write( b'User/realm "%s/%s" gave %s, but expected %s' % (user, realm, resp[b'response'], respdig) ) return False return True digest = digestauthserver() def perform_authentication(hgweb, req, op): auth = req.headers.get(b'Authorization') if req.headers.get(b'X-HgTest-AuthType') == b'Digest': if not auth: challenge = digest.makechallenge(b'mercurial') raise common.ErrorResponse( common.HTTP_UNAUTHORIZED, b'who', [(b'WWW-Authenticate', b'Digest %s' % challenge)], ) if not digest.checkauth(req, auth[7:]): raise common.ErrorResponse(common.HTTP_FORBIDDEN, b'no') return if not auth: raise common.ErrorResponse( common.HTTP_UNAUTHORIZED, b'who', [(b'WWW-Authenticate', b'Basic Realm="mercurial"')], ) if base64.b64decode(auth.split()[1]).split(b':', 1) != [b'user', b'pass']: raise common.ErrorResponse(common.HTTP_FORBIDDEN, b'no') def extsetup(ui): common.permhooks.insert(0, perform_authentication) digest.adduser(b'user', b'pass', b'mercurial')