Mercurial > hg
view tests/httpserverauth.py @ 45072:a56ba57c837d
scmutil: allowing different files to be prefetched per revision
The old API takes a list of revision separate from the file matcher, and thus
provides no way to fetch different sets of files from each revision. In
preparation for adding one such usage, I'm changing the API to take a list of
(revision, file matcher) tuples instead.
Differential Revision: https://phab.mercurial-scm.org/D8721
author | Rodrigo Damazio Bovendorp <rdamazio@google.com> |
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date | Thu, 09 Jul 2020 18:48:55 -0700 |
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')