wireproto: support for receiving multiple requests
Now that we have request IDs on each frame and a specification
that allows multiple requests to be issued simultaneously,
possibly interleaved, let's teach the server to deal with that.
Instead of tracking the state for *the* active command request,
we instead track the state of each receiving command by its
request ID. The multiple states in our state machine for processing
each command's state has been collapsed into a single state for
"receiving commands."
Tests have been added so our branch coverage covers all meaningful
branches.
However, we did lose some logical coverage. The implementation
of this new feature opens up the door to a server having partial
command requests when end of input is reached. We will probably
want a mechanism to deal with partial requests. For now, I've
tracked that as a known issue in the class docstring. I've
also noted an abuse vector that becomes a little bit easier to
exploit with this feature.
Differential Revision: https://phab.mercurial-scm.org/D2870
from __future__ import absolute_import, print_function
import unittest
from mercurial.hgweb import (
request as requestmod,
)
from mercurial import (
error,
)
DEFAULT_ENV = {
r'REQUEST_METHOD': r'GET',
r'SERVER_NAME': r'testserver',
r'SERVER_PORT': r'80',
r'SERVER_PROTOCOL': r'http',
r'wsgi.version': (1, 0),
r'wsgi.url_scheme': r'http',
r'wsgi.input': None,
r'wsgi.errors': None,
r'wsgi.multithread': False,
r'wsgi.multiprocess': True,
r'wsgi.run_once': False,
}
def parse(env, reponame=None, altbaseurl=None, extra=None):
env = dict(env)
env.update(extra or {})
return requestmod.parserequestfromenv(env, reponame=reponame,
altbaseurl=altbaseurl)
class ParseRequestTests(unittest.TestCase):
def testdefault(self):
r = parse(DEFAULT_ENV)
self.assertEqual(r.url, b'http://testserver')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://testserver')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
self.assertEqual(r.urlscheme, b'http')
self.assertEqual(r.method, b'GET')
self.assertIsNone(r.remoteuser)
self.assertIsNone(r.remotehost)
self.assertEqual(r.apppath, b'')
self.assertEqual(r.dispatchparts, [])
self.assertIsNone(r.dispatchpath)
self.assertIsNone(r.reponame)
self.assertEqual(r.querystring, b'')
self.assertEqual(len(r.qsparams), 0)
self.assertEqual(len(r.headers), 0)
def testcustomport(self):
r = parse(DEFAULT_ENV, extra={
r'SERVER_PORT': r'8000',
})
self.assertEqual(r.url, b'http://testserver:8000')
self.assertEqual(r.baseurl, b'http://testserver:8000')
self.assertEqual(r.advertisedurl, b'http://testserver:8000')
self.assertEqual(r.advertisedbaseurl, b'http://testserver:8000')
r = parse(DEFAULT_ENV, extra={
r'SERVER_PORT': r'4000',
r'wsgi.url_scheme': r'https',
})
self.assertEqual(r.url, b'https://testserver:4000')
self.assertEqual(r.baseurl, b'https://testserver:4000')
self.assertEqual(r.advertisedurl, b'https://testserver:4000')
self.assertEqual(r.advertisedbaseurl, b'https://testserver:4000')
def testhttphost(self):
r = parse(DEFAULT_ENV, extra={
r'HTTP_HOST': r'altserver',
})
self.assertEqual(r.url, b'http://altserver')
self.assertEqual(r.baseurl, b'http://altserver')
self.assertEqual(r.advertisedurl, b'http://testserver')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
def testscriptname(self):
r = parse(DEFAULT_ENV, extra={
r'SCRIPT_NAME': r'',
})
self.assertEqual(r.url, b'http://testserver')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://testserver')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
self.assertEqual(r.apppath, b'')
self.assertEqual(r.dispatchparts, [])
self.assertIsNone(r.dispatchpath)
r = parse(DEFAULT_ENV, extra={
r'SCRIPT_NAME': r'/script',
})
self.assertEqual(r.url, b'http://testserver/script')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://testserver/script')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
self.assertEqual(r.apppath, b'/script')
self.assertEqual(r.dispatchparts, [])
self.assertIsNone(r.dispatchpath)
r = parse(DEFAULT_ENV, extra={
r'SCRIPT_NAME': r'/multiple words',
})
self.assertEqual(r.url, b'http://testserver/multiple%20words')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://testserver/multiple%20words')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
self.assertEqual(r.apppath, b'/multiple words')
self.assertEqual(r.dispatchparts, [])
self.assertIsNone(r.dispatchpath)
def testpathinfo(self):
r = parse(DEFAULT_ENV, extra={
r'PATH_INFO': r'',
})
self.assertEqual(r.url, b'http://testserver')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://testserver')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
self.assertEqual(r.apppath, b'')
self.assertEqual(r.dispatchparts, [])
self.assertEqual(r.dispatchpath, b'')
r = parse(DEFAULT_ENV, extra={
r'PATH_INFO': r'/pathinfo',
})
self.assertEqual(r.url, b'http://testserver/pathinfo')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://testserver/pathinfo')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
self.assertEqual(r.apppath, b'')
self.assertEqual(r.dispatchparts, [b'pathinfo'])
self.assertEqual(r.dispatchpath, b'pathinfo')
r = parse(DEFAULT_ENV, extra={
r'PATH_INFO': r'/one/two/',
})
self.assertEqual(r.url, b'http://testserver/one/two/')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://testserver/one/two/')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
self.assertEqual(r.apppath, b'')
self.assertEqual(r.dispatchparts, [b'one', b'two'])
self.assertEqual(r.dispatchpath, b'one/two')
def testscriptandpathinfo(self):
r = parse(DEFAULT_ENV, extra={
r'SCRIPT_NAME': r'/script',
r'PATH_INFO': r'/pathinfo',
})
self.assertEqual(r.url, b'http://testserver/script/pathinfo')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://testserver/script/pathinfo')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
self.assertEqual(r.apppath, b'/script')
self.assertEqual(r.dispatchparts, [b'pathinfo'])
self.assertEqual(r.dispatchpath, b'pathinfo')
r = parse(DEFAULT_ENV, extra={
r'SCRIPT_NAME': r'/script1/script2',
r'PATH_INFO': r'/path1/path2',
})
self.assertEqual(r.url,
b'http://testserver/script1/script2/path1/path2')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl,
b'http://testserver/script1/script2/path1/path2')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
self.assertEqual(r.apppath, b'/script1/script2')
self.assertEqual(r.dispatchparts, [b'path1', b'path2'])
self.assertEqual(r.dispatchpath, b'path1/path2')
r = parse(DEFAULT_ENV, extra={
r'HTTP_HOST': r'hostserver',
r'SCRIPT_NAME': r'/script',
r'PATH_INFO': r'/pathinfo',
})
self.assertEqual(r.url, b'http://hostserver/script/pathinfo')
self.assertEqual(r.baseurl, b'http://hostserver')
self.assertEqual(r.advertisedurl, b'http://testserver/script/pathinfo')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
self.assertEqual(r.apppath, b'/script')
self.assertEqual(r.dispatchparts, [b'pathinfo'])
self.assertEqual(r.dispatchpath, b'pathinfo')
def testreponame(self):
"""repository path components get stripped from URL."""
with self.assertRaisesRegexp(error.ProgrammingError,
b'reponame requires PATH_INFO'):
parse(DEFAULT_ENV, reponame=b'repo')
with self.assertRaisesRegexp(error.ProgrammingError,
b'PATH_INFO does not begin with repo '
b'name'):
parse(DEFAULT_ENV, reponame=b'repo', extra={
r'PATH_INFO': r'/pathinfo',
})
with self.assertRaisesRegexp(error.ProgrammingError,
b'reponame prefix of PATH_INFO'):
parse(DEFAULT_ENV, reponame=b'repo', extra={
r'PATH_INFO': r'/repoextra/path',
})
r = parse(DEFAULT_ENV, reponame=b'repo', extra={
r'PATH_INFO': r'/repo/path1/path2',
})
self.assertEqual(r.url, b'http://testserver/repo/path1/path2')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://testserver/repo/path1/path2')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
self.assertEqual(r.apppath, b'/repo')
self.assertEqual(r.dispatchparts, [b'path1', b'path2'])
self.assertEqual(r.dispatchpath, b'path1/path2')
self.assertEqual(r.reponame, b'repo')
r = parse(DEFAULT_ENV, reponame=b'prefix/repo', extra={
r'PATH_INFO': r'/prefix/repo/path1/path2',
})
self.assertEqual(r.url, b'http://testserver/prefix/repo/path1/path2')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl,
b'http://testserver/prefix/repo/path1/path2')
self.assertEqual(r.advertisedbaseurl, b'http://testserver')
self.assertEqual(r.apppath, b'/prefix/repo')
self.assertEqual(r.dispatchparts, [b'path1', b'path2'])
self.assertEqual(r.dispatchpath, b'path1/path2')
self.assertEqual(r.reponame, b'prefix/repo')
def testaltbaseurl(self):
# Simple hostname remap.
r = parse(DEFAULT_ENV, altbaseurl='http://altserver')
self.assertEqual(r.url, b'http://testserver')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://altserver')
self.assertEqual(r.advertisedbaseurl, b'http://altserver')
self.assertEqual(r.urlscheme, b'http')
self.assertEqual(r.apppath, b'')
self.assertEqual(r.dispatchparts, [])
self.assertIsNone(r.dispatchpath)
self.assertIsNone(r.reponame)
# With a custom port.
r = parse(DEFAULT_ENV, altbaseurl='http://altserver:8000')
self.assertEqual(r.url, b'http://testserver')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://altserver:8000')
self.assertEqual(r.advertisedbaseurl, b'http://altserver:8000')
self.assertEqual(r.urlscheme, b'http')
self.assertEqual(r.apppath, b'')
self.assertEqual(r.dispatchparts, [])
self.assertIsNone(r.dispatchpath)
self.assertIsNone(r.reponame)
# With a changed protocol.
r = parse(DEFAULT_ENV, altbaseurl='https://altserver')
self.assertEqual(r.url, b'http://testserver')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'https://altserver')
self.assertEqual(r.advertisedbaseurl, b'https://altserver')
# URL scheme is defined as the actual scheme, not advertised.
self.assertEqual(r.urlscheme, b'http')
self.assertEqual(r.apppath, b'')
self.assertEqual(r.dispatchparts, [])
self.assertIsNone(r.dispatchpath)
self.assertIsNone(r.reponame)
# Need to specify explicit port number for proper https:// alt URLs.
r = parse(DEFAULT_ENV, altbaseurl='https://altserver:443')
self.assertEqual(r.url, b'http://testserver')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'https://altserver')
self.assertEqual(r.advertisedbaseurl, b'https://altserver')
self.assertEqual(r.urlscheme, b'http')
self.assertEqual(r.apppath, b'')
self.assertEqual(r.dispatchparts, [])
self.assertIsNone(r.dispatchpath)
self.assertIsNone(r.reponame)
# With only PATH_INFO defined.
r = parse(DEFAULT_ENV, altbaseurl='http://altserver', extra={
r'PATH_INFO': r'/path1/path2',
})
self.assertEqual(r.url, b'http://testserver/path1/path2')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://altserver/path1/path2')
self.assertEqual(r.advertisedbaseurl, b'http://altserver')
self.assertEqual(r.urlscheme, b'http')
self.assertEqual(r.apppath, b'')
self.assertEqual(r.dispatchparts, [b'path1', b'path2'])
self.assertEqual(r.dispatchpath, b'path1/path2')
self.assertIsNone(r.reponame)
# Path on alt URL.
r = parse(DEFAULT_ENV, altbaseurl='http://altserver/altpath')
self.assertEqual(r.url, b'http://testserver')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://altserver/altpath')
self.assertEqual(r.advertisedbaseurl, b'http://altserver')
self.assertEqual(r.urlscheme, b'http')
self.assertEqual(r.apppath, b'/altpath')
self.assertEqual(r.dispatchparts, [])
self.assertIsNone(r.dispatchpath)
self.assertIsNone(r.reponame)
# With a trailing slash.
r = parse(DEFAULT_ENV, altbaseurl='http://altserver/altpath/')
self.assertEqual(r.url, b'http://testserver')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://altserver/altpath/')
self.assertEqual(r.advertisedbaseurl, b'http://altserver')
self.assertEqual(r.urlscheme, b'http')
self.assertEqual(r.apppath, b'/altpath/')
self.assertEqual(r.dispatchparts, [])
self.assertIsNone(r.dispatchpath)
self.assertIsNone(r.reponame)
# PATH_INFO + path on alt URL.
r = parse(DEFAULT_ENV, altbaseurl='http://altserver/altpath', extra={
r'PATH_INFO': r'/path1/path2',
})
self.assertEqual(r.url, b'http://testserver/path1/path2')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl,
b'http://altserver/altpath/path1/path2')
self.assertEqual(r.advertisedbaseurl, b'http://altserver')
self.assertEqual(r.urlscheme, b'http')
self.assertEqual(r.apppath, b'/altpath')
self.assertEqual(r.dispatchparts, [b'path1', b'path2'])
self.assertEqual(r.dispatchpath, b'path1/path2')
self.assertIsNone(r.reponame)
# PATH_INFO + path on alt URL with trailing slash.
r = parse(DEFAULT_ENV, altbaseurl='http://altserver/altpath/', extra={
r'PATH_INFO': r'/path1/path2',
})
self.assertEqual(r.url, b'http://testserver/path1/path2')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl,
b'http://altserver/altpath//path1/path2')
self.assertEqual(r.advertisedbaseurl, b'http://altserver')
self.assertEqual(r.urlscheme, b'http')
self.assertEqual(r.apppath, b'/altpath/')
self.assertEqual(r.dispatchparts, [b'path1', b'path2'])
self.assertEqual(r.dispatchpath, b'path1/path2')
self.assertIsNone(r.reponame)
# Local SCRIPT_NAME is ignored.
r = parse(DEFAULT_ENV, altbaseurl='http://altserver', extra={
r'SCRIPT_NAME': r'/script',
r'PATH_INFO': r'/path1/path2',
})
self.assertEqual(r.url, b'http://testserver/script/path1/path2')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl, b'http://altserver/path1/path2')
self.assertEqual(r.advertisedbaseurl, b'http://altserver')
self.assertEqual(r.urlscheme, b'http')
self.assertEqual(r.apppath, b'')
self.assertEqual(r.dispatchparts, [b'path1', b'path2'])
self.assertEqual(r.dispatchpath, b'path1/path2')
self.assertIsNone(r.reponame)
# Use remote's path for script name, app path
r = parse(DEFAULT_ENV, altbaseurl='http://altserver/altroot', extra={
r'SCRIPT_NAME': r'/script',
r'PATH_INFO': r'/path1/path2',
})
self.assertEqual(r.url, b'http://testserver/script/path1/path2')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl,
b'http://altserver/altroot/path1/path2')
self.assertEqual(r.advertisedbaseurl, b'http://altserver')
self.assertEqual(r.urlscheme, b'http')
self.assertEqual(r.apppath, b'/altroot')
self.assertEqual(r.dispatchparts, [b'path1', b'path2'])
self.assertEqual(r.dispatchpath, b'path1/path2')
self.assertIsNone(r.reponame)
# reponame is factored in properly.
r = parse(DEFAULT_ENV, reponame=b'repo',
altbaseurl='http://altserver/altroot',
extra={
r'SCRIPT_NAME': r'/script',
r'PATH_INFO': r'/repo/path1/path2',
})
self.assertEqual(r.url, b'http://testserver/script/repo/path1/path2')
self.assertEqual(r.baseurl, b'http://testserver')
self.assertEqual(r.advertisedurl,
b'http://altserver/altroot/repo/path1/path2')
self.assertEqual(r.advertisedbaseurl, b'http://altserver')
self.assertEqual(r.apppath, b'/altroot/repo')
self.assertEqual(r.dispatchparts, [b'path1', b'path2'])
self.assertEqual(r.dispatchpath, b'path1/path2')
self.assertEqual(r.reponame, b'repo')
if __name__ == '__main__':
import silenttestrunner
silenttestrunner.main(__name__)