http: drop custom http client logic

Eight and a half years ago, as my starter bug on code.google.com, I
investigated a mysterious "broken pipe" error from seemingly random
clients[0]. That investigation revealed a tragic story: the Python
standard library's httplib was (and remains) barely functional. During
large POSTs, if a server responds early with an error (even a
permission denied error!) the client only notices that the server
closed the connection and everything breaks. Such server behavior is
implicitly legal under RFC 2616 (the latest HTTP RFC as of when I was
last working on this), and my understanding is that later RFCs have
made it explicitly legal to respond early with any status code outside
the 2xx range.

I embarked, probably foolishly, on a journey to write a new http
library with better overall behavior. The http library appears to work
well in most cases, but it can get confused in the presence of
proxies, and it depends on select(2) which limits its utility if a lot
of file descriptors are open. I haven't touched the http library in
almost two years, and in the interim the Python community has
discovered a better way[1] of writing network code. In theory some day
urllib3 will have its own home-grown http library built on h11[2], or
we could do that. Either way, it's time to declare our current
confusingly-named "http2" client logic and move on. I do hope to
revisit this some day: it's still garbage that we can't even respond
with a 401 or 403 without reading the entire POST body from the
client, but the goalposts on writing a new http client library have
moved substantially. We're almost certainly better off just switching
to requests and eventually picking up their http fixes than trying to
live with something that realistically only we'll ever use. Another
approach would be to write an adapter so that Mercurial can use pycurl
if it's installed. Neither of those approaches seem like they should
be investigated prior to a release of Mercurial that works on Python
3: that's where the mindshare is going to be for any improvements to
the state of the http client art.

0: http://web.archive.org/web/20130501031801/http://code.google.com/p/support/issues/detail?id=2716
1: http://sans-io.readthedocs.io/
2: https://github.com/njsmith/h11

Differential Revision: https://phab.mercurial-scm.org/D2444

mercurial/configitems.py

@@ -1,1308 +1,1302 b''
 # configitems.py - centralized declaration of configuration option
 #
 #  Copyright 2017 Pierre-Yves David <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from __future__ import absolute_import
 
 import functools
 import re
 
 from . import (
     encoding,
     error,
 )
 
 def loadconfigtable(ui, extname, configtable):
     """update config item known to the ui with the extension ones"""
     for section, items in sorted(configtable.items()):
         knownitems = ui._knownconfig.setdefault(section, itemregister())
         knownkeys = set(knownitems)
         newkeys = set(items)
         for key in sorted(knownkeys & newkeys):
             msg = "extension '%s' overwrite config item '%s.%s'"
             msg %= (extname, section, key)
             ui.develwarn(msg, config='warn-config')
 
         knownitems.update(items)
 
 class configitem(object):
     """represent a known config item
 
     :section: the official config section where to find this item,
        :name: the official name within the section,
     :default: default value for this item,
     :alias: optional list of tuples as alternatives,
     :generic: this is a generic definition, match name using regular expression.
     """
 
     def __init__(self, section, name, default=None, alias=(),
                  generic=False, priority=0):
         self.section = section
         self.name = name
         self.default = default
         self.alias = list(alias)
         self.generic = generic
         self.priority = priority
         self._re = None
         if generic:
             self._re = re.compile(self.name)
 
 class itemregister(dict):
     """A specialized dictionary that can handle wild-card selection"""
 
     def __init__(self):
         super(itemregister, self).__init__()
         self._generics = set()
 
     def update(self, other):
         super(itemregister, self).update(other)
         self._generics.update(other._generics)
 
     def __setitem__(self, key, item):
         super(itemregister, self).__setitem__(key, item)
         if item.generic:
             self._generics.add(item)
 
     def get(self, key):
         baseitem = super(itemregister, self).get(key)
         if baseitem is not None and not baseitem.generic:
             return baseitem
 
         # search for a matching generic item
         generics = sorted(self._generics, key=(lambda x: (x.priority, x.name)))
         for item in generics:
             # we use 'match' instead of 'search' to make the matching simpler
             # for people unfamiliar with regular expression. Having the match
             # rooted to the start of the string will produce less surprising
             # result for user writing simple regex for sub-attribute.
             #
             # For example using "color\..*" match produces an unsurprising
             # result, while using search could suddenly match apparently
             # unrelated configuration that happens to contains "color."
             # anywhere. This is a tradeoff where we favor requiring ".*" on
             # some match to avoid the need to prefix most pattern with "^".
             # The "^" seems more error prone.
             if item._re.match(key):
                 return item
 
         return None
 
 coreitems = {}
 
 def _register(configtable, *args, **kwargs):
     item = configitem(*args, **kwargs)
     section = configtable.setdefault(item.section, itemregister())
     if item.name in section:
         msg = "duplicated config item registration for '%s.%s'"
         raise error.ProgrammingError(msg % (item.section, item.name))
     section[item.name] = item
 
 # special value for case where the default is derived from other values
 dynamicdefault = object()
 
 # Registering actual config items
 
 def getitemregister(configtable):
     f = functools.partial(_register, configtable)
     # export pseudo enum as configitem.*
     f.dynamicdefault = dynamicdefault
     return f
 
 coreconfigitem = getitemregister(coreitems)
 
 coreconfigitem('alias', '.*',
     default=None,
     generic=True,
 )
 coreconfigitem('annotate', 'nodates',
     default=False,
 )
 coreconfigitem('annotate', 'showfunc',
     default=False,
 )
 coreconfigitem('annotate', 'unified',
     default=None,
 )
 coreconfigitem('annotate', 'git',
     default=False,
 )
 coreconfigitem('annotate', 'ignorews',
     default=False,
 )
 coreconfigitem('annotate', 'ignorewsamount',
     default=False,
 )
 coreconfigitem('annotate', 'ignoreblanklines',
     default=False,
 )
 coreconfigitem('annotate', 'ignorewseol',
     default=False,
 )
 coreconfigitem('annotate', 'nobinary',
     default=False,
 )
 coreconfigitem('annotate', 'noprefix',
     default=False,
 )
 coreconfigitem('auth', 'cookiefile',
     default=None,
 )
 # bookmarks.pushing: internal hack for discovery
 coreconfigitem('bookmarks', 'pushing',
     default=list,
 )
 # bundle.mainreporoot: internal hack for bundlerepo
 coreconfigitem('bundle', 'mainreporoot',
     default='',
 )
 # bundle.reorder: experimental config
 coreconfigitem('bundle', 'reorder',
     default='auto',
 )
 coreconfigitem('censor', 'policy',
     default='abort',
 )
 coreconfigitem('chgserver', 'idletimeout',
     default=3600,
 )
 coreconfigitem('chgserver', 'skiphash',
     default=False,
 )
 coreconfigitem('cmdserver', 'log',
     default=None,
 )
 coreconfigitem('color', '.*',
     default=None,
     generic=True,
 )
 coreconfigitem('color', 'mode',
     default='auto',
 )
 coreconfigitem('color', 'pagermode',
     default=dynamicdefault,
 )
 coreconfigitem('commands', 'show.aliasprefix',
     default=list,
 )
 coreconfigitem('commands', 'status.relative',
     default=False,
 )
 coreconfigitem('commands', 'status.skipstates',
     default=[],
 )
 coreconfigitem('commands', 'status.verbose',
     default=False,
 )
 coreconfigitem('commands', 'update.check',
     default=None,
     # Deprecated, remove after 4.4 release
     alias=[('experimental', 'updatecheck')]
 )
 coreconfigitem('commands', 'update.requiredest',
     default=False,
 )
 coreconfigitem('committemplate', '.*',
     default=None,
     generic=True,
 )
 coreconfigitem('convert', 'cvsps.cache',
     default=True,
 )
 coreconfigitem('convert', 'cvsps.fuzz',
     default=60,
 )
 coreconfigitem('convert', 'cvsps.logencoding',
     default=None,
 )
 coreconfigitem('convert', 'cvsps.mergefrom',
     default=None,
 )
 coreconfigitem('convert', 'cvsps.mergeto',
     default=None,
 )
 coreconfigitem('convert', 'git.committeractions',
     default=lambda: ['messagedifferent'],
 )
 coreconfigitem('convert', 'git.extrakeys',
     default=list,
 )
 coreconfigitem('convert', 'git.findcopiesharder',
     default=False,
 )
 coreconfigitem('convert', 'git.remoteprefix',
     default='remote',
 )
 coreconfigitem('convert', 'git.renamelimit',
     default=400,
 )
 coreconfigitem('convert', 'git.saverev',
     default=True,
 )
 coreconfigitem('convert', 'git.similarity',
     default=50,
 )
 coreconfigitem('convert', 'git.skipsubmodules',
     default=False,
 )
 coreconfigitem('convert', 'hg.clonebranches',
     default=False,
 )
 coreconfigitem('convert', 'hg.ignoreerrors',
     default=False,
 )
 coreconfigitem('convert', 'hg.revs',
     default=None,
 )
 coreconfigitem('convert', 'hg.saverev',
     default=False,
 )
 coreconfigitem('convert', 'hg.sourcename',
     default=None,
 )
 coreconfigitem('convert', 'hg.startrev',
     default=None,
 )
 coreconfigitem('convert', 'hg.tagsbranch',
     default='default',
 )
 coreconfigitem('convert', 'hg.usebranchnames',
     default=True,
 )
 coreconfigitem('convert', 'ignoreancestorcheck',
     default=False,
 )
 coreconfigitem('convert', 'localtimezone',
     default=False,
 )
 coreconfigitem('convert', 'p4.encoding',
     default=dynamicdefault,
 )
 coreconfigitem('convert', 'p4.startrev',
     default=0,
 )
 coreconfigitem('convert', 'skiptags',
     default=False,
 )
 coreconfigitem('convert', 'svn.debugsvnlog',
     default=True,
 )
 coreconfigitem('convert', 'svn.trunk',
     default=None,
 )
 coreconfigitem('convert', 'svn.tags',
     default=None,
 )
 coreconfigitem('convert', 'svn.branches',
     default=None,
 )
 coreconfigitem('convert', 'svn.startrev',
     default=0,
 )
 coreconfigitem('debug', 'dirstate.delaywrite',
     default=0,
 )
 coreconfigitem('defaults', '.*',
     default=None,
     generic=True,
 )
 coreconfigitem('devel', 'all-warnings',
     default=False,
 )
 coreconfigitem('devel', 'bundle2.debug',
     default=False,
 )
 coreconfigitem('devel', 'cache-vfs',
     default=None,
 )
 coreconfigitem('devel', 'check-locks',
     default=False,
 )
 coreconfigitem('devel', 'check-relroot',
     default=False,
 )
 coreconfigitem('devel', 'default-date',
     default=None,
 )
 coreconfigitem('devel', 'deprec-warn',
     default=False,
 )
 coreconfigitem('devel', 'disableloaddefaultcerts',
     default=False,
 )
 coreconfigitem('devel', 'warn-empty-changegroup',
     default=False,
 )
 coreconfigitem('devel', 'legacy.exchange',
     default=list,
 )
 coreconfigitem('devel', 'servercafile',
     default='',
 )
 coreconfigitem('devel', 'serverexactprotocol',
     default='',
 )
 coreconfigitem('devel', 'serverrequirecert',
     default=False,
 )
 coreconfigitem('devel', 'strip-obsmarkers',
     default=True,
 )
 coreconfigitem('devel', 'warn-config',
     default=None,
 )
 coreconfigitem('devel', 'warn-config-default',
     default=None,
 )
 coreconfigitem('devel', 'user.obsmarker',
     default=None,
 )
 coreconfigitem('devel', 'warn-config-unknown',
     default=None,
 )
 coreconfigitem('devel', 'debug.peer-request',
     default=False,
 )
 coreconfigitem('diff', 'nodates',
     default=False,
 )
 coreconfigitem('diff', 'showfunc',
     default=False,
 )
 coreconfigitem('diff', 'unified',
     default=None,
 )
 coreconfigitem('diff', 'git',
     default=False,
 )
 coreconfigitem('diff', 'ignorews',
     default=False,
 )
 coreconfigitem('diff', 'ignorewsamount',
     default=False,
 )
 coreconfigitem('diff', 'ignoreblanklines',
     default=False,
 )
 coreconfigitem('diff', 'ignorewseol',
     default=False,
 )
 coreconfigitem('diff', 'nobinary',
     default=False,
 )
 coreconfigitem('diff', 'noprefix',
     default=False,
 )
 coreconfigitem('email', 'bcc',
     default=None,
 )
 coreconfigitem('email', 'cc',
     default=None,
 )
 coreconfigitem('email', 'charsets',
     default=list,
 )
 coreconfigitem('email', 'from',
     default=None,
 )
 coreconfigitem('email', 'method',
     default='smtp',
 )
 coreconfigitem('email', 'reply-to',
     default=None,
 )
 coreconfigitem('email', 'to',
     default=None,
 )
 coreconfigitem('experimental', 'archivemetatemplate',
     default=dynamicdefault,
 )
 coreconfigitem('experimental', 'bundle-phases',
     default=False,
 )
 coreconfigitem('experimental', 'bundle2-advertise',
     default=True,
 )
 coreconfigitem('experimental', 'bundle2-output-capture',
     default=False,
 )
 coreconfigitem('experimental', 'bundle2.pushback',
     default=False,
 )
 coreconfigitem('experimental', 'bundle2.stream',
     default=False,
 )
 coreconfigitem('experimental', 'bundle2lazylocking',
     default=False,
 )
 coreconfigitem('experimental', 'bundlecomplevel',
     default=None,
 )
 coreconfigitem('experimental', 'changegroup3',
     default=False,
 )
 coreconfigitem('experimental', 'clientcompressionengines',
     default=list,
 )
 coreconfigitem('experimental', 'copytrace',
     default='on',
 )
 coreconfigitem('experimental', 'copytrace.movecandidateslimit',
     default=100,
 )
 coreconfigitem('experimental', 'copytrace.sourcecommitlimit',
     default=100,
 )
 coreconfigitem('experimental', 'crecordtest',
     default=None,
 )
 coreconfigitem('experimental', 'directaccess',
     default=False,
 )
 coreconfigitem('experimental', 'directaccess.revnums',
     default=False,
 )
 coreconfigitem('experimental', 'editortmpinhg',
     default=False,
 )
 coreconfigitem('experimental', 'evolution',
     default=list,
 )
 coreconfigitem('experimental', 'evolution.allowdivergence',
     default=False,
     alias=[('experimental', 'allowdivergence')]
 )
 coreconfigitem('experimental', 'evolution.allowunstable',
     default=None,
 )
 coreconfigitem('experimental', 'evolution.createmarkers',
     default=None,
 )
 coreconfigitem('experimental', 'evolution.effect-flags',
     default=True,
     alias=[('experimental', 'effect-flags')]
 )
 coreconfigitem('experimental', 'evolution.exchange',
     default=None,
 )
 coreconfigitem('experimental', 'evolution.bundle-obsmarker',
     default=False,
 )
 coreconfigitem('experimental', 'evolution.report-instabilities',
     default=True,
 )
 coreconfigitem('experimental', 'evolution.track-operation',
     default=True,
 )
 coreconfigitem('experimental', 'worddiff',
     default=False,
 )
 coreconfigitem('experimental', 'maxdeltachainspan',
     default=-1,
 )
 coreconfigitem('experimental', 'mmapindexthreshold',
     default=None,
 )
 coreconfigitem('experimental', 'nonnormalparanoidcheck',
     default=False,
 )
 coreconfigitem('experimental', 'exportableenviron',
     default=list,
 )
 coreconfigitem('experimental', 'extendedheader.index',
     default=None,
 )
 coreconfigitem('experimental', 'extendedheader.similarity',
     default=False,
 )
 coreconfigitem('experimental', 'format.compression',
     default='zlib',
 )
 coreconfigitem('experimental', 'graphshorten',
     default=False,
 )
 coreconfigitem('experimental', 'graphstyle.parent',
     default=dynamicdefault,
 )
 coreconfigitem('experimental', 'graphstyle.missing',
     default=dynamicdefault,
 )
 coreconfigitem('experimental', 'graphstyle.grandparent',
     default=dynamicdefault,
 )
 coreconfigitem('experimental', 'hook-track-tags',
     default=False,
 )
 coreconfigitem('experimental', 'httppostargs',
     default=False,
 )
 coreconfigitem('experimental', 'mergedriver',
     default=None,
 )
 coreconfigitem('experimental', 'obsmarkers-exchange-debug',
     default=False,
 )
 coreconfigitem('experimental', 'remotenames',
     default=False,
 )
 coreconfigitem('experimental', 'revlogv2',
     default=None,
 )
 coreconfigitem('experimental', 'single-head-per-branch',
     default=False,
 )
 coreconfigitem('experimental', 'sshserver.support-v2',
     default=False,
 )
 coreconfigitem('experimental', 'spacemovesdown',
     default=False,
 )
 coreconfigitem('experimental', 'sparse-read',
     default=False,
 )
 coreconfigitem('experimental', 'sparse-read.density-threshold',
     default=0.25,
 )
 coreconfigitem('experimental', 'sparse-read.min-gap-size',
     default='256K',
 )
 coreconfigitem('experimental', 'treemanifest',
     default=False,
 )
 coreconfigitem('experimental', 'update.atomic-file',
     default=False,
 )
 coreconfigitem('experimental', 'sshpeer.advertise-v2',
     default=False,
 )
 coreconfigitem('extensions', '.*',
     default=None,
     generic=True,
 )
 coreconfigitem('extdata', '.*',
     default=None,
     generic=True,
 )
 coreconfigitem('format', 'aggressivemergedeltas',
     default=False,
 )
 coreconfigitem('format', 'chunkcachesize',
     default=None,
 )
 coreconfigitem('format', 'dotencode',
     default=True,
 )
 coreconfigitem('format', 'generaldelta',
     default=False,
 )
 coreconfigitem('format', 'manifestcachesize',
     default=None,
 )
 coreconfigitem('format', 'maxchainlen',
     default=None,
 )
 coreconfigitem('format', 'obsstore-version',
     default=None,
 )
 coreconfigitem('format', 'usefncache',
     default=True,
 )
 coreconfigitem('format', 'usegeneraldelta',
     default=True,
 )
 coreconfigitem('format', 'usestore',
     default=True,
 )
 coreconfigitem('fsmonitor', 'warn_when_unused',
     default=True,
 )
 coreconfigitem('fsmonitor', 'warn_update_file_count',
     default=50000,
 )
 coreconfigitem('hooks', '.*',
     default=dynamicdefault,
     generic=True,
 )
 coreconfigitem('hgweb-paths', '.*',
     default=list,
     generic=True,
 )
 coreconfigitem('hostfingerprints', '.*',
     default=list,
     generic=True,
 )
 coreconfigitem('hostsecurity', 'ciphers',
     default=None,
 )
 coreconfigitem('hostsecurity', 'disabletls10warning',
     default=False,
 )
 coreconfigitem('hostsecurity', 'minimumprotocol',
     default=dynamicdefault,
 )
 coreconfigitem('hostsecurity', '.*:minimumprotocol$',
     default=dynamicdefault,
     generic=True,
 )
 coreconfigitem('hostsecurity', '.*:ciphers$',
     default=dynamicdefault,
     generic=True,
 )
 coreconfigitem('hostsecurity', '.*:fingerprints$',
     default=list,
     generic=True,
 )
 coreconfigitem('hostsecurity', '.*:verifycertsfile$',
     default=None,
     generic=True,
 )
 
 coreconfigitem('http_proxy', 'always',
     default=False,
 )
 coreconfigitem('http_proxy', 'host',
     default=None,
 )
 coreconfigitem('http_proxy', 'no',
     default=list,
 )
 coreconfigitem('http_proxy', 'passwd',
     default=None,
 )
 coreconfigitem('http_proxy', 'user',
     default=None,
 )
 coreconfigitem('logtoprocess', 'commandexception',
     default=None,
 )
 coreconfigitem('logtoprocess', 'commandfinish',
     default=None,
 )
 coreconfigitem('logtoprocess', 'command',
     default=None,
 )
 coreconfigitem('logtoprocess', 'develwarn',
     default=None,
 )
 coreconfigitem('logtoprocess', 'uiblocked',
     default=None,
 )
 coreconfigitem('merge', 'checkunknown',
     default='abort',
 )
 coreconfigitem('merge', 'checkignored',
     default='abort',
 )
 coreconfigitem('experimental', 'merge.checkpathconflicts',
     default=False,
 )
 coreconfigitem('merge', 'followcopies',
     default=True,
 )
 coreconfigitem('merge', 'on-failure',
     default='continue',
 )
 coreconfigitem('merge', 'preferancestor',
         default=lambda: ['*'],
 )
 coreconfigitem('merge-tools', '.*',
     default=None,
     generic=True,
 )
 coreconfigitem('merge-tools', br'.*\.args$',
     default="$local $base $other",
     generic=True,
     priority=-1,
 )
 coreconfigitem('merge-tools', br'.*\.binary$',
     default=False,
     generic=True,
     priority=-1,
 )
 coreconfigitem('merge-tools', br'.*\.check$',
     default=list,
     generic=True,
     priority=-1,
 )
 coreconfigitem('merge-tools', br'.*\.checkchanged$',
     default=False,
     generic=True,
     priority=-1,
 )
 coreconfigitem('merge-tools', br'.*\.executable$',
     default=dynamicdefault,
     generic=True,
     priority=-1,
 )
 coreconfigitem('merge-tools', br'.*\.fixeol$',
     default=False,
     generic=True,
     priority=-1,
 )
 coreconfigitem('merge-tools', br'.*\.gui$',
     default=False,
     generic=True,
     priority=-1,
 )
 coreconfigitem('merge-tools', br'.*\.mergemarkers$',
     default='basic',
     generic=True,
     priority=-1,
 )
 coreconfigitem('merge-tools', br'.*\.mergemarkertemplate$',
     default=dynamicdefault,  # take from ui.mergemarkertemplate
     generic=True,
     priority=-1,
 )
 coreconfigitem('merge-tools', br'.*\.priority$',
     default=0,
     generic=True,
     priority=-1,
 )
 coreconfigitem('merge-tools', br'.*\.premerge$',
     default=dynamicdefault,
     generic=True,
     priority=-1,
 )
 coreconfigitem('merge-tools', br'.*\.symlink$',
     default=False,
     generic=True,
     priority=-1,
 )
 coreconfigitem('pager', 'attend-.*',
     default=dynamicdefault,
     generic=True,
 )
 coreconfigitem('pager', 'ignore',
     default=list,
 )
 coreconfigitem('pager', 'pager',
     default=dynamicdefault,
 )
 coreconfigitem('patch', 'eol',
     default='strict',
 )
 coreconfigitem('patch', 'fuzz',
     default=2,
 )
 coreconfigitem('paths', 'default',
     default=None,
 )
 coreconfigitem('paths', 'default-push',
     default=None,
 )
 coreconfigitem('paths', '.*',
     default=None,
     generic=True,
 )
 coreconfigitem('phases', 'checksubrepos',
     default='follow',
 )
 coreconfigitem('phases', 'new-commit',
     default='draft',
 )
 coreconfigitem('phases', 'publish',
     default=True,
 )
 coreconfigitem('profiling', 'enabled',
     default=False,
 )
 coreconfigitem('profiling', 'format',
     default='text',
 )
 coreconfigitem('profiling', 'freq',
     default=1000,
 )
 coreconfigitem('profiling', 'limit',
     default=30,
 )
 coreconfigitem('profiling', 'nested',
     default=0,
 )
 coreconfigitem('profiling', 'output',
     default=None,
 )
 coreconfigitem('profiling', 'showmax',
     default=0.999,
 )
 coreconfigitem('profiling', 'showmin',
     default=dynamicdefault,
 )
 coreconfigitem('profiling', 'sort',
     default='inlinetime',
 )
 coreconfigitem('profiling', 'statformat',
     default='hotpath',
 )
 coreconfigitem('profiling', 'type',
     default='stat',
 )
 coreconfigitem('progress', 'assume-tty',
     default=False,
 )
 coreconfigitem('progress', 'changedelay',
     default=1,
 )
 coreconfigitem('progress', 'clear-complete',
     default=True,
 )
 coreconfigitem('progress', 'debug',
     default=False,
 )
 coreconfigitem('progress', 'delay',
     default=3,
 )
 coreconfigitem('progress', 'disable',
     default=False,
 )
 coreconfigitem('progress', 'estimateinterval',
     default=60.0,
 )
 coreconfigitem('progress', 'format',
     default=lambda: ['topic', 'bar', 'number', 'estimate'],
 )
 coreconfigitem('progress', 'refresh',
     default=0.1,
 )
 coreconfigitem('progress', 'width',
     default=dynamicdefault,
 )
 coreconfigitem('push', 'pushvars.server',
     default=False,
 )
 coreconfigitem('server', 'bookmarks-pushkey-compat',
     default=True,
 )
 coreconfigitem('server', 'bundle1',
     default=True,
 )
 coreconfigitem('server', 'bundle1gd',
     default=None,
 )
 coreconfigitem('server', 'bundle1.pull',
     default=None,
 )
 coreconfigitem('server', 'bundle1gd.pull',
     default=None,
 )
 coreconfigitem('server', 'bundle1.push',
     default=None,
 )
 coreconfigitem('server', 'bundle1gd.push',
     default=None,
 )
 coreconfigitem('server', 'compressionengines',
     default=list,
 )
 coreconfigitem('server', 'concurrent-push-mode',
     default='strict',
 )
 coreconfigitem('server', 'disablefullbundle',
     default=False,
 )
 coreconfigitem('server', 'maxhttpheaderlen',
     default=1024,
 )
 coreconfigitem('server', 'preferuncompressed',
     default=False,
 )
 coreconfigitem('server', 'uncompressed',
     default=True,
 )
 coreconfigitem('server', 'uncompressedallowsecret',
     default=False,
 )
 coreconfigitem('server', 'validate',
     default=False,
 )
 coreconfigitem('server', 'zliblevel',
     default=-1,
 )
 coreconfigitem('share', 'pool',
     default=None,
 )
 coreconfigitem('share', 'poolnaming',
     default='identity',
 )
 coreconfigitem('smtp', 'host',
     default=None,
 )
 coreconfigitem('smtp', 'local_hostname',
     default=None,
 )
 coreconfigitem('smtp', 'password',
     default=None,
 )
 coreconfigitem('smtp', 'port',
     default=dynamicdefault,
 )
 coreconfigitem('smtp', 'tls',
     default='none',
 )
 coreconfigitem('smtp', 'username',
     default=None,
 )
 coreconfigitem('sparse', 'missingwarning',
     default=True,
 )
 coreconfigitem('subrepos', 'allowed',
     default=dynamicdefault,  # to make backporting simpler
 )
 coreconfigitem('subrepos', 'hg:allowed',
     default=dynamicdefault,
 )
 coreconfigitem('subrepos', 'git:allowed',
     default=dynamicdefault,
 )
 coreconfigitem('subrepos', 'svn:allowed',
     default=dynamicdefault,
 )
 coreconfigitem('templates', '.*',
     default=None,
     generic=True,
 )
 coreconfigitem('trusted', 'groups',
     default=list,
 )
 coreconfigitem('trusted', 'users',
     default=list,
 )
 coreconfigitem('ui', '_usedassubrepo',
     default=False,
 )
 coreconfigitem('ui', 'allowemptycommit',
     default=False,
 )
 coreconfigitem('ui', 'archivemeta',
     default=True,
 )
 coreconfigitem('ui', 'askusername',
     default=False,
 )
 coreconfigitem('ui', 'clonebundlefallback',
     default=False,
 )
 coreconfigitem('ui', 'clonebundleprefers',
     default=list,
 )
 coreconfigitem('ui', 'clonebundles',
     default=True,
 )
 coreconfigitem('ui', 'color',
     default='auto',
 )
 coreconfigitem('ui', 'commitsubrepos',
     default=False,
 )
 coreconfigitem('ui', 'debug',
     default=False,
 )
 coreconfigitem('ui', 'debugger',
     default=None,
 )
 coreconfigitem('ui', 'editor',
     default=dynamicdefault,
 )
 coreconfigitem('ui', 'fallbackencoding',
     default=None,
 )
 coreconfigitem('ui', 'forcecwd',
     default=None,
 )
 coreconfigitem('ui', 'forcemerge',
     default=None,
 )
 coreconfigitem('ui', 'formatdebug',
     default=False,
 )
 coreconfigitem('ui', 'formatjson',
     default=False,
 )
 coreconfigitem('ui', 'formatted',
     default=None,
 )
 coreconfigitem('ui', 'graphnodetemplate',
     default=None,
 )
-coreconfigitem('ui', 'http2debuglevel',
-    default=None,
-)
 coreconfigitem('ui', 'interactive',
     default=None,
 )
 coreconfigitem('ui', 'interface',
     default=None,
 )
 coreconfigitem('ui', 'interface.chunkselector',
     default=None,
 )
 coreconfigitem('ui', 'logblockedtimes',
     default=False,
 )
 coreconfigitem('ui', 'logtemplate',
     default=None,
 )
 coreconfigitem('ui', 'merge',
     default=None,
 )
 coreconfigitem('ui', 'mergemarkers',
     default='basic',
 )
 coreconfigitem('ui', 'mergemarkertemplate',
     default=('{node|short} '
             '{ifeq(tags, "tip", "", '
             'ifeq(tags, "", "", "{tags} "))}'
             '{if(bookmarks, "{bookmarks} ")}'
             '{ifeq(branch, "default", "", "{branch} ")}'
             '- {author|user}: {desc|firstline}')
 )
 coreconfigitem('ui', 'nontty',
     default=False,
 )
 coreconfigitem('ui', 'origbackuppath',
     default=None,
 )
 coreconfigitem('ui', 'paginate',
     default=True,
 )
 coreconfigitem('ui', 'patch',
     default=None,
 )
 coreconfigitem('ui', 'portablefilenames',
     default='warn',
 )
 coreconfigitem('ui', 'promptecho',
     default=False,
 )
 coreconfigitem('ui', 'quiet',
     default=False,
 )
 coreconfigitem('ui', 'quietbookmarkmove',
     default=False,
 )
 coreconfigitem('ui', 'remotecmd',
     default='hg',
 )
 coreconfigitem('ui', 'report_untrusted',
     default=True,
 )
 coreconfigitem('ui', 'rollback',
     default=True,
 )
 coreconfigitem('ui', 'slash',
     default=False,
 )
 coreconfigitem('ui', 'ssh',
     default='ssh',
 )
 coreconfigitem('ui', 'ssherrorhint',
     default=None,
 )
 coreconfigitem('ui', 'statuscopies',
     default=False,
 )
 coreconfigitem('ui', 'strict',
     default=False,
 )
 coreconfigitem('ui', 'style',
     default='',
 )
 coreconfigitem('ui', 'supportcontact',
     default=None,
 )
 coreconfigitem('ui', 'textwidth',
     default=78,
 )
 coreconfigitem('ui', 'timeout',
     default='600',
 )
 coreconfigitem('ui', 'timeout.warn',
     default=0,
 )
 coreconfigitem('ui', 'traceback',
     default=False,
 )
 coreconfigitem('ui', 'tweakdefaults',
     default=False,
 )
-coreconfigitem('ui', 'usehttp2',
-    default=False,
-)
 coreconfigitem('ui', 'username',
     alias=[('ui', 'user')]
 )
 coreconfigitem('ui', 'verbose',
     default=False,
 )
 coreconfigitem('verify', 'skipflags',
     default=None,
 )
 coreconfigitem('web', 'allowbz2',
     default=False,
 )
 coreconfigitem('web', 'allowgz',
     default=False,
 )
 coreconfigitem('web', 'allow-pull',
     alias=[('web', 'allowpull')],
     default=True,
 )
 coreconfigitem('web', 'allow-push',
     alias=[('web', 'allow_push')],
     default=list,
 )
 coreconfigitem('web', 'allowzip',
     default=False,
 )
 coreconfigitem('web', 'archivesubrepos',
     default=False,
 )
 coreconfigitem('web', 'cache',
     default=True,
 )
 coreconfigitem('web', 'contact',
     default=None,
 )
 coreconfigitem('web', 'deny_push',
     default=list,
 )
 coreconfigitem('web', 'guessmime',
     default=False,
 )
 coreconfigitem('web', 'hidden',
     default=False,
 )
 coreconfigitem('web', 'labels',
     default=list,
 )
 coreconfigitem('web', 'logoimg',
     default='hglogo.png',
 )
 coreconfigitem('web', 'logourl',
     default='https://mercurial-scm.org/',
 )
 coreconfigitem('web', 'accesslog',
     default='-',
 )
 coreconfigitem('web', 'address',
     default='',
 )
 coreconfigitem('web', 'allow_archive',
     default=list,
 )
 coreconfigitem('web', 'allow_read',
     default=list,
 )
 coreconfigitem('web', 'baseurl',
     default=None,
 )
 coreconfigitem('web', 'cacerts',
     default=None,
 )
 coreconfigitem('web', 'certificate',
     default=None,
 )
 coreconfigitem('web', 'collapse',
     default=False,
 )
 coreconfigitem('web', 'csp',
     default=None,
 )
 coreconfigitem('web', 'deny_read',
     default=list,
 )
 coreconfigitem('web', 'descend',
     default=True,
 )
 coreconfigitem('web', 'description',
     default="",
 )
 coreconfigitem('web', 'encoding',
     default=lambda: encoding.encoding,
 )
 coreconfigitem('web', 'errorlog',
     default='-',
 )
 coreconfigitem('web', 'ipv6',
     default=False,
 )
 coreconfigitem('web', 'maxchanges',
     default=10,
 )
 coreconfigitem('web', 'maxfiles',
     default=10,
 )
 coreconfigitem('web', 'maxshortchanges',
     default=60,
 )
 coreconfigitem('web', 'motd',
     default='',
 )
 coreconfigitem('web', 'name',
     default=dynamicdefault,
 )
 coreconfigitem('web', 'port',
     default=8000,
 )
 coreconfigitem('web', 'prefix',
     default='',
 )
 coreconfigitem('web', 'push_ssl',
     default=True,
 )
 coreconfigitem('web', 'refreshinterval',
     default=20,
 )
 coreconfigitem('web', 'staticurl',
     default=None,
 )
 coreconfigitem('web', 'stripes',
     default=1,
 )
 coreconfigitem('web', 'style',
     default='paper',
 )
 coreconfigitem('web', 'templates',
     default=None,
 )
 coreconfigitem('web', 'view',
     default='served',
 )
 coreconfigitem('worker', 'backgroundclose',
     default=dynamicdefault,
 )
 # Windows defaults to a limit of 512 open files. A buffer of 128
 # should give us enough headway.
 coreconfigitem('worker', 'backgroundclosemaxqueue',
     default=384,
 )
 coreconfigitem('worker', 'backgroundcloseminfilecount',
     default=2048,
 )
 coreconfigitem('worker', 'backgroundclosethreadcount',
     default=4,
 )
 coreconfigitem('worker', 'enabled',
     default=True,
 )
 coreconfigitem('worker', 'numcpus',
     default=None,
 )
 
 # Rebase related configuration moved to core because other extension are doing
 # strange things. For example, shelve import the extensions to reuse some bit
 # without formally loading it.
 coreconfigitem('commands', 'rebase.requiredest',
             default=False,
 )
 coreconfigitem('experimental', 'rebaseskipobsolete',
     default=True,
 )
 coreconfigitem('rebase', 'singletransaction',
     default=False,
 )
 coreconfigitem('rebase', 'experimental.inmemory',
     default=False,
 )

mercurial/httpconnection.py

@@ -1,299 +1,107 b''
 # httpconnection.py - urllib2 handler for new http support
 #
 # Copyright 2005, 2006, 2007, 2008 Matt Mackall <[e-mail]>
 # Copyright 2006, 2007 Alexis S. L. Carvalho <[e-mail]>
 # Copyright 2006 Vadim Gelfer <[e-mail]>
 # Copyright 2011 Google, Inc.
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from __future__ import absolute_import
 
-import logging
 import os
-import socket
 
 from .i18n import _
 from . import (
-    httpclient,
-    sslutil,
-    urllibcompat,
     util,
 )
 
 urlerr = util.urlerr
 urlreq = util.urlreq
 
 # moved here from url.py to avoid a cycle
 class httpsendfile(object):
     """This is a wrapper around the objects returned by python's "open".
 
     Its purpose is to send file-like objects via HTTP.
     It do however not define a __len__ attribute because the length
     might be more than Py_ssize_t can handle.
     """
 
     def __init__(self, ui, *args, **kwargs):
         self.ui = ui
         self._data = open(*args, **kwargs)
         self.seek = self._data.seek
         self.close = self._data.close
         self.write = self._data.write
         self.length = os.fstat(self._data.fileno()).st_size
         self._pos = 0
         self._total = self.length // 1024 * 2
 
     def read(self, *args, **kwargs):
         ret = self._data.read(*args, **kwargs)
         if not ret:
             self.ui.progress(_('sending'), None)
             return ret
         self._pos += len(ret)
         # We pass double the max for total because we currently have
         # to send the bundle twice in the case of a server that
         # requires authentication. Since we can't know until we try
         # once whether authentication will be required, just lie to
         # the user and maybe the push succeeds suddenly at 50%.
         self.ui.progress(_('sending'), self._pos // 1024,
                          unit=_('kb'), total=self._total)
         return ret
 
     def __enter__(self):
         return self
 
     def __exit__(self, exc_type, exc_val, exc_tb):
         self.close()
 
 # moved here from url.py to avoid a cycle
 def readauthforuri(ui, uri, user):
     # Read configuration
     groups = {}
     for key, val in ui.configitems('auth'):
         if key in ('cookiefile',):
             continue
 
         if '.' not in key:
             ui.warn(_("ignoring invalid [auth] key '%s'\n") % key)
             continue
         group, setting = key.rsplit('.', 1)
         gdict = groups.setdefault(group, {})
         if setting in ('username', 'cert', 'key'):
             val = util.expandpath(val)
         gdict[setting] = val
 
     # Find the best match
     scheme, hostpath = uri.split('://', 1)
     bestuser = None
     bestlen = 0
     bestauth = None
     for group, auth in groups.iteritems():
         if user and user != auth.get('username', user):
             # If a username was set in the URI, the entry username
             # must either match it or be unset
             continue
         prefix = auth.get('prefix')
         if not prefix:
             continue
         p = prefix.split('://', 1)
         if len(p) > 1:
             schemes, prefix = [p[0]], p[1]
         else:
             schemes = (auth.get('schemes') or 'https').split()
         if (prefix == '*' or hostpath.startswith(prefix)) and \
             (len(prefix) > bestlen or (len(prefix) == bestlen and \
                 not bestuser and 'username' in auth)) \
              and scheme in schemes:
             bestlen = len(prefix)
             bestauth = group, auth
             bestuser = auth.get('username')
             if user and not bestuser:
                 auth['username'] = user
     return bestauth
-
-# Mercurial (at least until we can remove the old codepath) requires
-# that the http response object be sufficiently file-like, so we
-# provide a close() method here.
-class HTTPResponse(httpclient.HTTPResponse):
-    def close(self):
-        pass
-
-class HTTPConnection(httpclient.HTTPConnection):
-    response_class = HTTPResponse
-    def request(self, method, uri, body=None, headers=None):
-        if headers is None:
-            headers = {}
-        if isinstance(body, httpsendfile):
-            body.seek(0)
-        httpclient.HTTPConnection.request(self, method, uri, body=body,
-                                          headers=headers)
-
-
-_configuredlogging = False
-LOGFMT = '%(levelname)s:%(name)s:%(lineno)d:%(message)s'
-# Subclass BOTH of these because otherwise urllib2 "helpfully"
-# reinserts them since it notices we don't include any subclasses of
-# them.
-class http2handler(urlreq.httphandler, urlreq.httpshandler):
-    def __init__(self, ui, pwmgr):
-        global _configuredlogging
-        urlreq.abstracthttphandler.__init__(self)
-        self.ui = ui
-        self.pwmgr = pwmgr
-        self._connections = {}
-        # developer config: ui.http2debuglevel
-        loglevel = ui.config('ui', 'http2debuglevel')
-        if loglevel and not _configuredlogging:
-            _configuredlogging = True
-            logger = logging.getLogger('mercurial.httpclient')
-            logger.setLevel(getattr(logging, loglevel.upper()))
-            handler = logging.StreamHandler()
-            handler.setFormatter(logging.Formatter(LOGFMT))
-            logger.addHandler(handler)
-
-    def close_all(self):
-        """Close and remove all connection objects being kept for reuse."""
-        for openconns in self._connections.values():
-            for conn in openconns:
-                conn.close()
-        self._connections = {}
-
-    # shamelessly borrowed from urllib2.AbstractHTTPHandler
-    def do_open(self, http_class, req, use_ssl):
-        """Return an addinfourl object for the request, using http_class.
-
-        http_class must implement the HTTPConnection API from httplib.
-        The addinfourl return value is a file-like object.  It also
-        has methods and attributes including:
-            - info(): return a mimetools.Message object for the headers
-            - geturl(): return the original request URL
-            - code: HTTP status code
-        """
-        # If using a proxy, the host returned by get_host() is
-        # actually the proxy. On Python 2.6.1, the real destination
-        # hostname is encoded in the URI in the urllib2 request
-        # object. On Python 2.6.5, it's stored in the _tunnel_host
-        # attribute which has no accessor.
-        tunhost = getattr(req, '_tunnel_host', None)
-        host = urllibcompat.gethost(req)
-        if tunhost:
-            proxyhost = host
-            host = tunhost
-        elif req.has_proxy():
-            proxyhost = urllibcompat.gethost(req)
-            host = urllibcompat.getselector(
-                req).split('://', 1)[1].split('/', 1)[0]
-        else:
-            proxyhost = None
-
-        if proxyhost:
-            if ':' in proxyhost:
-                # Note: this means we'll explode if we try and use an
-                # IPv6 http proxy. This isn't a regression, so we
-                # won't worry about it for now.
-                proxyhost, proxyport = proxyhost.rsplit(':', 1)
-            else:
-                proxyport = 3128 # squid default
-            proxy = (proxyhost, proxyport)
-        else:
-            proxy = None
-
-        if not host:
-            raise urlerr.urlerror('no host given')
-
-        connkey = use_ssl, host, proxy
-        allconns = self._connections.get(connkey, [])
-        conns = [c for c in allconns if not c.busy()]
-        if conns:
-            h = conns[0]
-        else:
-            if allconns:
-                self.ui.debug('all connections for %s busy, making a new '
-                              'one\n' % host)
-            timeout = None
-            if req.timeout is not socket._GLOBAL_DEFAULT_TIMEOUT:
-                timeout = req.timeout
-            h = http_class(host, timeout=timeout, proxy_hostport=proxy)
-            self._connections.setdefault(connkey, []).append(h)
-
-        headers = dict(req.headers)
-        headers.update(req.unredirected_hdrs)
-        headers = dict(
-            (name.title(), val) for name, val in headers.items())
-        try:
-            path = urllibcompat.getselector(req)
-            if '://' in path:
-                path = path.split('://', 1)[1].split('/', 1)[1]
-            if path[0] != '/':
-                path = '/' + path
-            h.request(req.get_method(), path, req.data, headers)
-            r = h.getresponse()
-        except socket.error as err: # XXX what error?
-            raise urlerr.urlerror(err)
-
-        # Pick apart the HTTPResponse object to get the addinfourl
-        # object initialized properly.
-        r.recv = r.read
-
-        resp = urlreq.addinfourl(r, r.headers, urllibcompat.getfullurl(req))
-        resp.code = r.status
-        resp.msg = r.reason
-        return resp
-
-    # httplib always uses the given host/port as the socket connect
-    # target, and then allows full URIs in the request path, which it
-    # then observes and treats as a signal to do proxying instead.
-    def http_open(self, req):
-        if urllibcompat.getfullurl(req).startswith('https'):
-            return self.https_open(req)
-        def makehttpcon(*args, **kwargs):
-            k2 = dict(kwargs)
-            k2[r'use_ssl'] = False
-            return HTTPConnection(*args, **k2)
-        return self.do_open(makehttpcon, req, False)
-
-    def https_open(self, req):
-        # urllibcompat.getfullurl(req) does not contain credentials and we may
-        # need them to match the certificates.
-        url = urllibcompat.getfullurl(req)
-        user, password = self.pwmgr.find_stored_password(url)
-        res = readauthforuri(self.ui, url, user)
-        if res:
-            group, auth = res
-            self.auth = auth
-            self.ui.debug("using auth.%s.* for authentication\n" % group)
-        else:
-            self.auth = None
-        return self.do_open(self._makesslconnection, req, True)
-
-    def _makesslconnection(self, host, port=443, *args, **kwargs):
-        keyfile = None
-        certfile = None
-
-        if args: # key_file
-            keyfile = args.pop(0)
-        if args: # cert_file
-            certfile = args.pop(0)
-
-        # if the user has specified different key/cert files in
-        # hgrc, we prefer these
-        if self.auth and 'key' in self.auth and 'cert' in self.auth:
-            keyfile = self.auth['key']
-            certfile = self.auth['cert']
-
-        # let host port take precedence
-        if ':' in host and '[' not in host or ']:' in host:
-            host, port = host.rsplit(':', 1)
-            port = int(port)
-            if '[' in host:
-                host = host[1:-1]
-
-        kwargs[r'keyfile'] = keyfile
-        kwargs[r'certfile'] = certfile
-
-        con = HTTPConnection(host, port, use_ssl=True,
-                             ssl_wrap_socket=sslutil.wrapsocket,
-                             ssl_validator=sslutil.validatesocket,
-                             ui=self.ui,
-                             **kwargs)
-        return con

mercurial/httppeer.py

@@ -1,501 +1,498 b''
 # httppeer.py - HTTP repository proxy classes for mercurial
 #
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 # Copyright 2006 Vadim Gelfer <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from __future__ import absolute_import
 
 import errno
 import io
 import os
 import socket
 import struct
 import tempfile
 
 from .i18n import _
 from . import (
     bundle2,
     error,
     httpconnection,
     pycompat,
     statichttprepo,
     url,
     util,
     wireproto,
 )
 
 httplib = util.httplib
 urlerr = util.urlerr
 urlreq = util.urlreq
 
 def encodevalueinheaders(value, header, limit):
     """Encode a string value into multiple HTTP headers.
 
     ``value`` will be encoded into 1 or more HTTP headers with the names
     ``header-<N>`` where ``<N>`` is an integer starting at 1. Each header
     name + value will be at most ``limit`` bytes long.
 
     Returns an iterable of 2-tuples consisting of header names and
     values as native strings.
     """
     # HTTP Headers are ASCII. Python 3 requires them to be unicodes,
     # not bytes. This function always takes bytes in as arguments.
     fmt = pycompat.strurl(header) + r'-%s'
     # Note: it is *NOT* a bug that the last bit here is a bytestring
     # and not a unicode: we're just getting the encoded length anyway,
     # and using an r-string to make it portable between Python 2 and 3
     # doesn't work because then the \r is a literal backslash-r
     # instead of a carriage return.
     valuelen = limit - len(fmt % r'000') - len(': \r\n')
     result = []
 
     n = 0
     for i in xrange(0, len(value), valuelen):
         n += 1
         result.append((fmt % str(n), pycompat.strurl(value[i:i + valuelen])))
 
     return result
 
 def _wraphttpresponse(resp):
     """Wrap an HTTPResponse with common error handlers.
 
     This ensures that any I/O from any consumer raises the appropriate
     error and messaging.
     """
     origread = resp.read
 
     class readerproxy(resp.__class__):
         def read(self, size=None):
             try:
                 return origread(size)
             except httplib.IncompleteRead as e:
                 # e.expected is an integer if length known or None otherwise.
                 if e.expected:
                     msg = _('HTTP request error (incomplete response; '
                             'expected %d bytes got %d)') % (e.expected,
                                                            len(e.partial))
                 else:
                     msg = _('HTTP request error (incomplete response)')
 
                 raise error.PeerTransportError(
                     msg,
                     hint=_('this may be an intermittent network failure; '
                            'if the error persists, consider contacting the '
                            'network or server operator'))
             except httplib.HTTPException as e:
                 raise error.PeerTransportError(
                     _('HTTP request error (%s)') % e,
                     hint=_('this may be an intermittent network failure; '
                            'if the error persists, consider contacting the '
                            'network or server operator'))
 
     resp.__class__ = readerproxy
 
 class _multifile(object):
     def __init__(self, *fileobjs):
         for f in fileobjs:
             if not util.safehasattr(f, 'length'):
                 raise ValueError(
                     '_multifile only supports file objects that '
                     'have a length but this one does not:', type(f), f)
         self._fileobjs = fileobjs
         self._index = 0
 
     @property
     def length(self):
         return sum(f.length for f in self._fileobjs)
 
     def read(self, amt=None):
         if amt <= 0:
             return ''.join(f.read() for f in self._fileobjs)
         parts = []
         while amt and self._index < len(self._fileobjs):
             parts.append(self._fileobjs[self._index].read(amt))
             got = len(parts[-1])
             if got < amt:
                 self._index += 1
             amt -= got
         return ''.join(parts)
 
     def seek(self, offset, whence=os.SEEK_SET):
         if whence != os.SEEK_SET:
             raise NotImplementedError(
                 '_multifile does not support anything other'
                 ' than os.SEEK_SET for whence on seek()')
         if offset != 0:
             raise NotImplementedError(
                 '_multifile only supports seeking to start, but that '
                 'could be fixed if you need it')
         for f in self._fileobjs:
             f.seek(0)
         self._index = 0
 
 class httppeer(wireproto.wirepeer):
     def __init__(self, ui, path):
         self._path = path
         self._caps = None
         self._urlopener = None
         self._requestbuilder = None
         u = util.url(path)
         if u.query or u.fragment:
             raise error.Abort(_('unsupported URL component: "%s"') %
                              (u.query or u.fragment))
 
         # urllib cannot handle URLs with embedded user or passwd
         self._url, authinfo = u.authinfo()
 
         self._ui = ui
         ui.debug('using %s\n' % self._url)
 
         self._urlopener = url.opener(ui, authinfo)
         self._requestbuilder = urlreq.request
 
     def __del__(self):
         urlopener = getattr(self, '_urlopener', None)
         if urlopener:
             for h in urlopener.handlers:
                 h.close()
                 getattr(h, "close_all", lambda: None)()
 
     def _openurl(self, req):
         if (self._ui.debugflag
             and self._ui.configbool('devel', 'debug.peer-request')):
             dbg = self._ui.debug
             line = 'devel-peer-request: %s\n'
             dbg(line % '%s %s' % (req.get_method(), req.get_full_url()))
             hgargssize = None
 
             for header, value in sorted(req.header_items()):
                 if header.startswith('X-hgarg-'):
                     if hgargssize is None:
                         hgargssize = 0
                     hgargssize += len(value)
                 else:
                     dbg(line % '  %s %s' % (header, value))
 
             if hgargssize is not None:
                 dbg(line % '  %d bytes of commands arguments in headers'
                     % hgargssize)
 
             if req.has_data():
                 data = req.get_data()
                 length = getattr(data, 'length', None)
                 if length is None:
                     length = len(data)
                 dbg(line % '  %d bytes of data' % length)
 
             start = util.timer()
 
         ret = self._urlopener.open(req)
         if self._ui.configbool('devel', 'debug.peer-request'):
             dbg(line % '  finished in %.4f seconds (%s)'
                 % (util.timer() - start, ret.code))
         return ret
 
     # Begin of _basepeer interface.
 
     @util.propertycache
     def ui(self):
         return self._ui
 
     def url(self):
         return self._path
 
     def local(self):
         return None
 
     def peer(self):
         return self
 
     def canpush(self):
         return True
 
     def close(self):
         pass
 
     # End of _basepeer interface.
 
     # Begin of _basewirepeer interface.
 
     def capabilities(self):
         # self._fetchcaps() should have been called as part of peer
         # handshake. So self._caps should always be set.
         assert self._caps is not None
         return self._caps
 
     # End of _basewirepeer interface.
 
     # look up capabilities only when needed
 
     def _fetchcaps(self):
         self._caps = set(self._call('capabilities').split())
 
     def _callstream(self, cmd, _compressible=False, **args):
         args = pycompat.byteskwargs(args)
         if cmd == 'pushkey':
             args['data'] = ''
         data = args.pop('data', None)
         headers = args.pop('headers', {})
 
         self.ui.debug("sending %s command\n" % cmd)
         q = [('cmd', cmd)]
         headersize = 0
         varyheaders = []
         # Important: don't use self.capable() here or else you end up
         # with infinite recursion when trying to look up capabilities
         # for the first time.
         postargsok = self._caps is not None and 'httppostargs' in self._caps
 
         # Send arguments via POST.
         if postargsok and args:
             strargs = urlreq.urlencode(sorted(args.items()))
             if not data:
                 data = strargs
             else:
                 if isinstance(data, bytes):
                     i = io.BytesIO(data)
                     i.length = len(data)
                     data = i
                 argsio = io.BytesIO(strargs)
                 argsio.length = len(strargs)
                 data = _multifile(argsio, data)
             headers[r'X-HgArgs-Post'] = len(strargs)
         elif args:
             # Calling self.capable() can infinite loop if we are calling
             # "capabilities". But that command should never accept wire
             # protocol arguments. So this should never happen.
             assert cmd != 'capabilities'
             httpheader = self.capable('httpheader')
             if httpheader:
                 headersize = int(httpheader.split(',', 1)[0])
 
             # Send arguments via HTTP headers.
             if headersize > 0:
                 # The headers can typically carry more data than the URL.
                 encargs = urlreq.urlencode(sorted(args.items()))
                 for header, value in encodevalueinheaders(encargs, 'X-HgArg',
                                                           headersize):
                     headers[header] = value
                     varyheaders.append(header)
             # Send arguments via query string (Mercurial <1.9).
             else:
                 q += sorted(args.items())
 
         qs = '?%s' % urlreq.urlencode(q)
         cu = "%s%s" % (self._url, qs)
         size = 0
         if util.safehasattr(data, 'length'):
             size = data.length
         elif data is not None:
             size = len(data)
-        if size and self.ui.configbool('ui', 'usehttp2'):
-            headers[r'Expect'] = r'100-Continue'
-            headers[r'X-HgHttp2'] = r'1'
         if data is not None and r'Content-Type' not in headers:
             headers[r'Content-Type'] = r'application/mercurial-0.1'
 
         # Tell the server we accept application/mercurial-0.2 and multiple
         # compression formats if the server is capable of emitting those
         # payloads.
         protoparams = []
 
         mediatypes = set()
         if self._caps is not None:
             mt = self.capable('httpmediatype')
             if mt:
                 protoparams.append('0.1')
                 mediatypes = set(mt.split(','))
 
         if '0.2tx' in mediatypes:
             protoparams.append('0.2')
 
         if '0.2tx' in mediatypes and self.capable('compression'):
             # We /could/ compare supported compression formats and prune
             # non-mutually supported or error if nothing is mutually supported.
             # For now, send the full list to the server and have it error.
             comps = [e.wireprotosupport().name for e in
                      util.compengines.supportedwireengines(util.CLIENTROLE)]
             protoparams.append('comp=%s' % ','.join(comps))
 
         if protoparams:
             protoheaders = encodevalueinheaders(' '.join(protoparams),
                                                 'X-HgProto',
                                                 headersize or 1024)
             for header, value in protoheaders:
                 headers[header] = value
                 varyheaders.append(header)
 
         if varyheaders:
             headers[r'Vary'] = r','.join(varyheaders)
 
         req = self._requestbuilder(pycompat.strurl(cu), data, headers)
 
         if data is not None:
             self.ui.debug("sending %d bytes\n" % size)
             req.add_unredirected_header(r'Content-Length', r'%d' % size)
         try:
             resp = self._openurl(req)
         except urlerr.httperror as inst:
             if inst.code == 401:
                 raise error.Abort(_('authorization failed'))
             raise
         except httplib.HTTPException as inst:
             self.ui.debug('http error while sending %s command\n' % cmd)
             self.ui.traceback()
             raise IOError(None, inst)
 
         # Insert error handlers for common I/O failures.
         _wraphttpresponse(resp)
 
         # record the url we got redirected to
         resp_url = pycompat.bytesurl(resp.geturl())
         if resp_url.endswith(qs):
             resp_url = resp_url[:-len(qs)]
         if self._url.rstrip('/') != resp_url.rstrip('/'):
             if not self.ui.quiet:
                 self.ui.warn(_('real URL is %s\n') % resp_url)
         self._url = resp_url
         try:
             proto = pycompat.bytesurl(resp.getheader(r'content-type', r''))
         except AttributeError:
             proto = pycompat.bytesurl(resp.headers.get(r'content-type', r''))
 
         safeurl = util.hidepassword(self._url)
         if proto.startswith('application/hg-error'):
             raise error.OutOfBandError(resp.read())
         # accept old "text/plain" and "application/hg-changegroup" for now
         if not (proto.startswith('application/mercurial-') or
                 (proto.startswith('text/plain')
                  and not resp.headers.get('content-length')) or
                 proto.startswith('application/hg-changegroup')):
             self.ui.debug("requested URL: '%s'\n" % util.hidepassword(cu))
             raise error.RepoError(
                 _("'%s' does not appear to be an hg repository:\n"
                   "---%%<--- (%s)\n%s\n---%%<---\n")
                 % (safeurl, proto or 'no content-type', resp.read(1024)))
 
         if proto.startswith('application/mercurial-'):
             try:
                 version = proto.split('-', 1)[1]
                 version_info = tuple([int(n) for n in version.split('.')])
             except ValueError:
                 raise error.RepoError(_("'%s' sent a broken Content-Type "
                                         "header (%s)") % (safeurl, proto))
 
             # TODO consider switching to a decompression reader that uses
             # generators.
             if version_info == (0, 1):
                 if _compressible:
                     return util.compengines['zlib'].decompressorreader(resp)
                 return resp
             elif version_info == (0, 2):
                 # application/mercurial-0.2 always identifies the compression
                 # engine in the payload header.
                 elen = struct.unpack('B', resp.read(1))[0]
                 ename = resp.read(elen)
                 engine = util.compengines.forwiretype(ename)
                 return engine.decompressorreader(resp)
             else:
                 raise error.RepoError(_("'%s' uses newer protocol %s") %
                                       (safeurl, version))
 
         if _compressible:
             return util.compengines['zlib'].decompressorreader(resp)
 
         return resp
 
     def _call(self, cmd, **args):
         fp = self._callstream(cmd, **args)
         try:
             return fp.read()
         finally:
             # if using keepalive, allow connection to be reused
             fp.close()
 
     def _callpush(self, cmd, cg, **args):
         # have to stream bundle to a temp file because we do not have
         # http 1.1 chunked transfer.
 
         types = self.capable('unbundle')
         try:
             types = types.split(',')
         except AttributeError:
             # servers older than d1b16a746db6 will send 'unbundle' as a
             # boolean capability. They only support headerless/uncompressed
             # bundles.
             types = [""]
         for x in types:
             if x in bundle2.bundletypes:
                 type = x
                 break
 
         tempname = bundle2.writebundle(self.ui, cg, None, type)
         fp = httpconnection.httpsendfile(self.ui, tempname, "rb")
         headers = {r'Content-Type': r'application/mercurial-0.1'}
 
         try:
             r = self._call(cmd, data=fp, headers=headers, **args)
             vals = r.split('\n', 1)
             if len(vals) < 2:
                 raise error.ResponseError(_("unexpected response:"), r)
             return vals
         except socket.error as err:
             if err.args[0] in (errno.ECONNRESET, errno.EPIPE):
                 raise error.Abort(_('push failed: %s') % err.args[1])
             raise error.Abort(err.args[1])
         finally:
             fp.close()
             os.unlink(tempname)
 
     def _calltwowaystream(self, cmd, fp, **args):
         fh = None
         fp_ = None
         filename = None
         try:
             # dump bundle to disk
             fd, filename = tempfile.mkstemp(prefix="hg-bundle-", suffix=".hg")
             fh = os.fdopen(fd, pycompat.sysstr("wb"))
             d = fp.read(4096)
             while d:
                 fh.write(d)
                 d = fp.read(4096)
             fh.close()
             # start http push
             fp_ = httpconnection.httpsendfile(self.ui, filename, "rb")
             headers = {r'Content-Type': r'application/mercurial-0.1'}
             return self._callstream(cmd, data=fp_, headers=headers, **args)
         finally:
             if fp_ is not None:
                 fp_.close()
             if fh is not None:
                 fh.close()
                 os.unlink(filename)
 
     def _callcompressable(self, cmd, **args):
         return self._callstream(cmd, _compressible=True, **args)
 
     def _abort(self, exception):
         raise exception
 
 def instance(ui, path, create):
     if create:
         raise error.Abort(_('cannot create new http repository'))
     try:
         if path.startswith('https:') and not url.has_https:
             raise error.Abort(_('Python support for SSL and HTTPS '
                                 'is not installed'))
 
         inst = httppeer(ui, path)
         inst._fetchcaps()
 
         return inst
     except error.RepoError as httpexception:
         try:
             r = statichttprepo.instance(ui, "static-" + path, create)
             ui.note(_('(falling back to static-http)\n'))
             return r
         except error.RepoError:
             raise httpexception # use the original http RepoError instead

mercurial/url.py

@@ -1,539 +1,531 b''
 # url.py - HTTP handling for mercurial
 #
 # Copyright 2005, 2006, 2007, 2008 Matt Mackall <[e-mail]>
 # Copyright 2006, 2007 Alexis S. L. Carvalho <[e-mail]>
 # Copyright 2006 Vadim Gelfer <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from __future__ import absolute_import
 
 import base64
 import os
 import socket
 
 from .i18n import _
 from . import (
     encoding,
     error,
     httpconnection as httpconnectionmod,
     keepalive,
     pycompat,
     sslutil,
     urllibcompat,
     util,
 )
 
 httplib = util.httplib
 stringio = util.stringio
 urlerr = util.urlerr
 urlreq = util.urlreq
 
 def escape(s, quote=None):
     '''Replace special characters "&", "<" and ">" to HTML-safe sequences.
     If the optional flag quote is true, the quotation mark character (")
     is also translated.
 
     This is the same as cgi.escape in Python, but always operates on
     bytes, whereas cgi.escape in Python 3 only works on unicodes.
     '''
     s = s.replace(b"&", b"&amp;")
     s = s.replace(b"<", b"&lt;")
     s = s.replace(b">", b"&gt;")
     if quote:
         s = s.replace(b'"', b"&quot;")
     return s
 
 class passwordmgr(object):
     def __init__(self, ui, passwddb):
         self.ui = ui
         self.passwddb = passwddb
 
     def add_password(self, realm, uri, user, passwd):
         return self.passwddb.add_password(realm, uri, user, passwd)
 
     def find_user_password(self, realm, authuri):
         authinfo = self.passwddb.find_user_password(realm, authuri)
         user, passwd = authinfo
         if user and passwd:
             self._writedebug(user, passwd)
             return (user, passwd)
 
         if not user or not passwd:
             res = httpconnectionmod.readauthforuri(self.ui, authuri, user)
             if res:
                 group, auth = res
                 user, passwd = auth.get('username'), auth.get('password')
                 self.ui.debug("using auth.%s.* for authentication\n" % group)
         if not user or not passwd:
             u = util.url(authuri)
             u.query = None
             if not self.ui.interactive():
                 raise error.Abort(_('http authorization required for %s') %
                                   util.hidepassword(bytes(u)))
 
             self.ui.write(_("http authorization required for %s\n") %
                           util.hidepassword(bytes(u)))
             self.ui.write(_("realm: %s\n") % realm)
             if user:
                 self.ui.write(_("user: %s\n") % user)
             else:
                 user = self.ui.prompt(_("user:"), default=None)
 
             if not passwd:
                 passwd = self.ui.getpass()
 
         self.passwddb.add_password(realm, authuri, user, passwd)
         self._writedebug(user, passwd)
         return (user, passwd)
 
     def _writedebug(self, user, passwd):
         msg = _('http auth: user %s, password %s\n')
         self.ui.debug(msg % (user, passwd and '*' * len(passwd) or 'not set'))
 
     def find_stored_password(self, authuri):
         return self.passwddb.find_user_password(None, authuri)
 
 class proxyhandler(urlreq.proxyhandler):
     def __init__(self, ui):
         proxyurl = (ui.config("http_proxy", "host") or
                         encoding.environ.get('http_proxy'))
         # XXX proxyauthinfo = None
 
         if proxyurl:
             # proxy can be proper url or host[:port]
             if not (proxyurl.startswith('http:') or
                     proxyurl.startswith('https:')):
                 proxyurl = 'http://' + proxyurl + '/'
             proxy = util.url(proxyurl)
             if not proxy.user:
                 proxy.user = ui.config("http_proxy", "user")
                 proxy.passwd = ui.config("http_proxy", "passwd")
 
             # see if we should use a proxy for this url
             no_list = ["localhost", "127.0.0.1"]
             no_list.extend([p.lower() for
                             p in ui.configlist("http_proxy", "no")])
             no_list.extend([p.strip().lower() for
                             p in encoding.environ.get("no_proxy", '').split(',')
                             if p.strip()])
             # "http_proxy.always" config is for running tests on localhost
             if ui.configbool("http_proxy", "always"):
                 self.no_list = []
             else:
                 self.no_list = no_list
 
             proxyurl = bytes(proxy)
             proxies = {'http': proxyurl, 'https': proxyurl}
             ui.debug('proxying through %s\n' % util.hidepassword(proxyurl))
         else:
             proxies = {}
 
         urlreq.proxyhandler.__init__(self, proxies)
         self.ui = ui
 
     def proxy_open(self, req, proxy, type_):
         host = urllibcompat.gethost(req).split(':')[0]
         for e in self.no_list:
             if host == e:
                 return None
             if e.startswith('*.') and host.endswith(e[2:]):
                 return None
             if e.startswith('.') and host.endswith(e[1:]):
                 return None
 
         return urlreq.proxyhandler.proxy_open(self, req, proxy, type_)
 
 def _gen_sendfile(orgsend):
     def _sendfile(self, data):
         # send a file
         if isinstance(data, httpconnectionmod.httpsendfile):
             # if auth required, some data sent twice, so rewind here
             data.seek(0)
             for chunk in util.filechunkiter(data):
                 orgsend(self, chunk)
         else:
             orgsend(self, data)
     return _sendfile
 
 has_https = util.safehasattr(urlreq, 'httpshandler')
 
 class httpconnection(keepalive.HTTPConnection):
     # must be able to send big bundle as stream.
     send = _gen_sendfile(keepalive.HTTPConnection.send)
 
     def getresponse(self):
         proxyres = getattr(self, 'proxyres', None)
         if proxyres:
             if proxyres.will_close:
                 self.close()
             self.proxyres = None
             return proxyres
         return keepalive.HTTPConnection.getresponse(self)
 
 # general transaction handler to support different ways to handle
 # HTTPS proxying before and after Python 2.6.3.
 def _generic_start_transaction(handler, h, req):
     tunnel_host = getattr(req, '_tunnel_host', None)
     if tunnel_host:
         if tunnel_host[:7] not in ['http://', 'https:/']:
             tunnel_host = 'https://' + tunnel_host
         new_tunnel = True
     else:
         tunnel_host = urllibcompat.getselector(req)
         new_tunnel = False
 
     if new_tunnel or tunnel_host == urllibcompat.getfullurl(req): # has proxy
         u = util.url(tunnel_host)
         if new_tunnel or u.scheme == 'https': # only use CONNECT for HTTPS
             h.realhostport = ':'.join([u.host, (u.port or '443')])
             h.headers = req.headers.copy()
             h.headers.update(handler.parent.addheaders)
             return
 
     h.realhostport = None
     h.headers = None
 
 def _generic_proxytunnel(self):
     proxyheaders = dict(
             [(x, self.headers[x]) for x in self.headers
              if x.lower().startswith('proxy-')])
     self.send('CONNECT %s HTTP/1.0\r\n' % self.realhostport)
     for header in proxyheaders.iteritems():
         self.send('%s: %s\r\n' % header)
     self.send('\r\n')
 
     # majority of the following code is duplicated from
     # httplib.HTTPConnection as there are no adequate places to
     # override functions to provide the needed functionality
     res = self.response_class(self.sock,
                               strict=self.strict,
                               method=self._method)
 
     while True:
         version, status, reason = res._read_status()
         if status != httplib.CONTINUE:
             break
         # skip lines that are all whitespace
         list(iter(lambda: res.fp.readline().strip(), ''))
     res.status = status
     res.reason = reason.strip()
 
     if res.status == 200:
         # skip lines until we find a blank line
         list(iter(res.fp.readline, '\r\n'))
         return True
 
     if version == 'HTTP/1.0':
         res.version = 10
     elif version.startswith('HTTP/1.'):
         res.version = 11
     elif version == 'HTTP/0.9':
         res.version = 9
     else:
         raise httplib.UnknownProtocol(version)
 
     if res.version == 9:
         res.length = None
         res.chunked = 0
         res.will_close = 1
         res.msg = httplib.HTTPMessage(stringio())
         return False
 
     res.msg = httplib.HTTPMessage(res.fp)
     res.msg.fp = None
 
     # are we using the chunked-style of transfer encoding?
     trenc = res.msg.getheader('transfer-encoding')
     if trenc and trenc.lower() == "chunked":
         res.chunked = 1
         res.chunk_left = None
     else:
         res.chunked = 0
 
     # will the connection close at the end of the response?
     res.will_close = res._check_close()
 
     # do we have a Content-Length?
     # NOTE: RFC 2616, section 4.4, #3 says we ignore this if
     # transfer-encoding is "chunked"
     length = res.msg.getheader('content-length')
     if length and not res.chunked:
         try:
             res.length = int(length)
         except ValueError:
             res.length = None
         else:
             if res.length < 0:  # ignore nonsensical negative lengths
                 res.length = None
     else:
         res.length = None
 
     # does the body have a fixed length? (of zero)
     if (status == httplib.NO_CONTENT or status == httplib.NOT_MODIFIED or
         100 <= status < 200 or # 1xx codes
         res._method == 'HEAD'):
         res.length = 0
 
     # if the connection remains open, and we aren't using chunked, and
     # a content-length was not provided, then assume that the connection
     # WILL close.
     if (not res.will_close and
        not res.chunked and
        res.length is None):
         res.will_close = 1
 
     self.proxyres = res
 
     return False
 
 class httphandler(keepalive.HTTPHandler):
     def http_open(self, req):
         return self.do_open(httpconnection, req)
 
     def _start_transaction(self, h, req):
         _generic_start_transaction(self, h, req)
         return keepalive.HTTPHandler._start_transaction(self, h, req)
 
 if has_https:
     class httpsconnection(httplib.HTTPConnection):
         response_class = keepalive.HTTPResponse
         default_port = httplib.HTTPS_PORT
         # must be able to send big bundle as stream.
         send = _gen_sendfile(keepalive.safesend)
         getresponse = keepalive.wrapgetresponse(httplib.HTTPConnection)
 
         def __init__(self, host, port=None, key_file=None, cert_file=None,
                      *args, **kwargs):
             httplib.HTTPConnection.__init__(self, host, port, *args, **kwargs)
             self.key_file = key_file
             self.cert_file = cert_file
 
         def connect(self):
             self.sock = socket.create_connection((self.host, self.port))
 
             host = self.host
             if self.realhostport: # use CONNECT proxy
                 _generic_proxytunnel(self)
                 host = self.realhostport.rsplit(':', 1)[0]
             self.sock = sslutil.wrapsocket(
                 self.sock, self.key_file, self.cert_file, ui=self.ui,
                 serverhostname=host)
             sslutil.validatesocket(self.sock)
 
     class httpshandler(keepalive.KeepAliveHandler, urlreq.httpshandler):
         def __init__(self, ui):
             keepalive.KeepAliveHandler.__init__(self)
             urlreq.httpshandler.__init__(self)
             self.ui = ui
             self.pwmgr = passwordmgr(self.ui,
                                      self.ui.httppasswordmgrdb)
 
         def _start_transaction(self, h, req):
             _generic_start_transaction(self, h, req)
             return keepalive.KeepAliveHandler._start_transaction(self, h, req)
 
         def https_open(self, req):
             # urllibcompat.getfullurl() does not contain credentials
             # and we may need them to match the certificates.
             url = urllibcompat.getfullurl(req)
             user, password = self.pwmgr.find_stored_password(url)
             res = httpconnectionmod.readauthforuri(self.ui, url, user)
             if res:
                 group, auth = res
                 self.auth = auth
                 self.ui.debug("using auth.%s.* for authentication\n" % group)
             else:
                 self.auth = None
             return self.do_open(self._makeconnection, req)
 
         def _makeconnection(self, host, port=None, *args, **kwargs):
             keyfile = None
             certfile = None
 
             if len(args) >= 1: # key_file
                 keyfile = args[0]
             if len(args) >= 2: # cert_file
                 certfile = args[1]
             args = args[2:]
 
             # if the user has specified different key/cert files in
             # hgrc, we prefer these
             if self.auth and 'key' in self.auth and 'cert' in self.auth:
                 keyfile = self.auth['key']
                 certfile = self.auth['cert']
 
             conn = httpsconnection(host, port, keyfile, certfile, *args,
                                    **kwargs)
             conn.ui = self.ui
             return conn
 
 class httpdigestauthhandler(urlreq.httpdigestauthhandler):
     def __init__(self, *args, **kwargs):
         urlreq.httpdigestauthhandler.__init__(self, *args, **kwargs)
         self.retried_req = None
 
     def reset_retry_count(self):
         # Python 2.6.5 will call this on 401 or 407 errors and thus loop
         # forever. We disable reset_retry_count completely and reset in
         # http_error_auth_reqed instead.
         pass
 
     def http_error_auth_reqed(self, auth_header, host, req, headers):
         # Reset the retry counter once for each request.
         if req is not self.retried_req:
             self.retried_req = req
             self.retried = 0
         return urlreq.httpdigestauthhandler.http_error_auth_reqed(
                     self, auth_header, host, req, headers)
 
 class httpbasicauthhandler(urlreq.httpbasicauthhandler):
     def __init__(self, *args, **kwargs):
         self.auth = None
         urlreq.httpbasicauthhandler.__init__(self, *args, **kwargs)
         self.retried_req = None
 
     def http_request(self, request):
         if self.auth:
             request.add_unredirected_header(self.auth_header, self.auth)
 
         return request
 
     def https_request(self, request):
         if self.auth:
             request.add_unredirected_header(self.auth_header, self.auth)
 
         return request
 
     def reset_retry_count(self):
         # Python 2.6.5 will call this on 401 or 407 errors and thus loop
         # forever. We disable reset_retry_count completely and reset in
         # http_error_auth_reqed instead.
         pass
 
     def http_error_auth_reqed(self, auth_header, host, req, headers):
         # Reset the retry counter once for each request.
         if req is not self.retried_req:
             self.retried_req = req
             self.retried = 0
         return urlreq.httpbasicauthhandler.http_error_auth_reqed(
                         self, auth_header, host, req, headers)
 
     def retry_http_basic_auth(self, host, req, realm):
         user, pw = self.passwd.find_user_password(
             realm, urllibcompat.getfullurl(req))
         if pw is not None:
             raw = "%s:%s" % (user, pw)
             auth = 'Basic %s' % base64.b64encode(raw).strip()
             if req.get_header(self.auth_header, None) == auth:
                 return None
             self.auth = auth
             req.add_unredirected_header(self.auth_header, auth)
             return self.parent.open(req)
         else:
             return None
 
 class cookiehandler(urlreq.basehandler):
     def __init__(self, ui):
         self.cookiejar = None
 
         cookiefile = ui.config('auth', 'cookiefile')
         if not cookiefile:
             return
 
         cookiefile = util.expandpath(cookiefile)
         try:
             cookiejar = util.cookielib.MozillaCookieJar(cookiefile)
             cookiejar.load()
             self.cookiejar = cookiejar
         except util.cookielib.LoadError as e:
             ui.warn(_('(error loading cookie file %s: %s; continuing without '
                       'cookies)\n') % (cookiefile, util.forcebytestr(e)))
 
     def http_request(self, request):
         if self.cookiejar:
             self.cookiejar.add_cookie_header(request)
 
         return request
 
     def https_request(self, request):
         if self.cookiejar:
             self.cookiejar.add_cookie_header(request)
 
         return request
 
 handlerfuncs = []
 
 def opener(ui, authinfo=None, useragent=None):
     '''
     construct an opener suitable for urllib2
     authinfo will be added to the password manager
     '''
-    # experimental config: ui.usehttp2
-    if ui.configbool('ui', 'usehttp2'):
-        handlers = [
-            httpconnectionmod.http2handler(
-                ui,
-                passwordmgr(ui, ui.httppasswordmgrdb))
-        ]
-    else:
-        handlers = [httphandler()]
-        if has_https:
-            handlers.append(httpshandler(ui))
+    handlers = [httphandler()]
+    if has_https:
+        handlers.append(httpshandler(ui))
 
     handlers.append(proxyhandler(ui))
 
     passmgr = passwordmgr(ui, ui.httppasswordmgrdb)
     if authinfo is not None:
         realm, uris, user, passwd = authinfo
         saveduser, savedpass = passmgr.find_stored_password(uris[0])
         if user != saveduser or passwd:
             passmgr.add_password(realm, uris, user, passwd)
         ui.debug('http auth: user %s, password %s\n' %
                  (user, passwd and '*' * len(passwd) or 'not set'))
 
     handlers.extend((httpbasicauthhandler(passmgr),
                      httpdigestauthhandler(passmgr)))
     handlers.extend([h(ui, passmgr) for h in handlerfuncs])
     handlers.append(cookiehandler(ui))
     opener = urlreq.buildopener(*handlers)
 
     # The user agent should should *NOT* be used by servers for e.g.
     # protocol detection or feature negotiation: there are other
     # facilities for that.
     #
     # "mercurial/proto-1.0" was the original user agent string and
     # exists for backwards compatibility reasons.
     #
     # The "(Mercurial %s)" string contains the distribution
     # name and version. Other client implementations should choose their
     # own distribution name. Since servers should not be using the user
     # agent string for anything, clients should be able to define whatever
     # user agent they deem appropriate.
     #
     # The custom user agent is for lfs, because unfortunately some servers
     # do look at this value.
     if not useragent:
         agent = 'mercurial/proto-1.0 (Mercurial %s)' % util.version()
         opener.addheaders = [(r'User-agent', pycompat.sysstr(agent))]
     else:
         opener.addheaders = [(r'User-agent', pycompat.sysstr(useragent))]
 
     # This header should only be needed by wire protocol requests. But it has
     # been sent on all requests since forever. We keep sending it for backwards
     # compatibility reasons. Modern versions of the wire protocol use
     # X-HgProto-<N> for advertising client support.
     opener.addheaders.append((r'Accept', r'application/mercurial-0.1'))
     return opener
 
 def open(ui, url_, data=None):
     u = util.url(url_)
     if u.scheme:
         u.scheme = u.scheme.lower()
         url_, authinfo = u.authinfo()
     else:
         path = util.normpath(os.path.abspath(url_))
         url_ = 'file://' + urlreq.pathname2url(path)
         authinfo = None
     return opener(ui, authinfo).open(url_, data)

setup.py

@@ -1,1055 +1,1054 b''
 #
 # This is the mercurial setup script.
 #
 # 'python setup.py install', or
 # 'python setup.py --help' for more options
 
 import os
 
 supportedpy = '~= 2.7'
 if os.environ.get('HGALLOWPYTHON3', ''):
     # Mercurial will never work on Python 3 before 3.5 due to a lack
     # of % formatting on bytestrings, and can't work on 3.6.0 or 3.6.1
     # due to a bug in % formatting in bytestrings.
     #
     # TODO: when we actually work on Python 3, use this string as the
     # actual supportedpy string.
     supportedpy = ','.join([
         '>=2.7',
         '!=3.0.*',
         '!=3.1.*',
         '!=3.2.*',
         '!=3.3.*',
         '!=3.4.*',
         '!=3.6.0',
         '!=3.6.1',
     ])
 
 import sys, platform
 if sys.version_info[0] >= 3:
     printf = eval('print')
     libdir_escape = 'unicode_escape'
     def sysstr(s):
         return s.decode('latin-1')
 else:
     libdir_escape = 'string_escape'
     def printf(*args, **kwargs):
         f = kwargs.get('file', sys.stdout)
         end = kwargs.get('end', '\n')
         f.write(b' '.join(args) + end)
     def sysstr(s):
         return s
 
 # Attempt to guide users to a modern pip - this means that 2.6 users
 # should have a chance of getting a 4.2 release, and when we ratchet
 # the version requirement forward again hopefully everyone will get
 # something that works for them.
 if sys.version_info < (2, 7, 0, 'final'):
     pip_message = ('This may be due to an out of date pip. '
                    'Make sure you have pip >= 9.0.1.')
     try:
         import pip
         pip_version = tuple([int(x) for x in pip.__version__.split('.')[:3]])
         if pip_version < (9, 0, 1) :
             pip_message = (
                 'Your pip version is out of date, please install '
                 'pip >= 9.0.1. pip {} detected.'.format(pip.__version__))
         else:
             # pip is new enough - it must be something else
             pip_message = ''
     except Exception:
         pass
     error = """
 Mercurial does not support Python older than 2.7.
 Python {py} detected.
 {pip}
 """.format(py=sys.version_info, pip=pip_message)
     printf(error, file=sys.stderr)
     sys.exit(1)
 
 # We don't yet officially support Python 3. But we want to allow developers to
 # hack on. Detect and disallow running on Python 3 by default. But provide a
 # backdoor to enable working on Python 3.
 if sys.version_info[0] != 2:
     badpython = True
 
     # Allow Python 3 from source checkouts.
     if os.path.isdir('.hg'):
         badpython = False
 
     if badpython:
         error = """
 Mercurial only supports Python 2.7.
 Python {py} detected.
 Please re-run with Python 2.7.
 """.format(py=sys.version_info)
 
         printf(error, file=sys.stderr)
         sys.exit(1)
 
 # Solaris Python packaging brain damage
 try:
     import hashlib
     sha = hashlib.sha1()
 except ImportError:
     try:
         import sha
         sha.sha # silence unused import warning
     except ImportError:
         raise SystemExit(
             "Couldn't import standard hashlib (incomplete Python install).")
 
 try:
     import zlib
     zlib.compressobj # silence unused import warning
 except ImportError:
     raise SystemExit(
         "Couldn't import standard zlib (incomplete Python install).")
 
 # The base IronPython distribution (as of 2.7.1) doesn't support bz2
 isironpython = False
 try:
     isironpython = (platform.python_implementation()
                     .lower().find("ironpython") != -1)
 except AttributeError:
     pass
 
 if isironpython:
     sys.stderr.write("warning: IronPython detected (no bz2 support)\n")
 else:
     try:
         import bz2
         bz2.BZ2Compressor # silence unused import warning
     except ImportError:
         raise SystemExit(
             "Couldn't import standard bz2 (incomplete Python install).")
 
 ispypy = "PyPy" in sys.version
 
 import ctypes
 import stat, subprocess, time
 import re
 import shutil
 import tempfile
 from distutils import log
 # We have issues with setuptools on some platforms and builders. Until
 # those are resolved, setuptools is opt-in except for platforms where
 # we don't have issues.
 issetuptools = (os.name == 'nt' or 'FORCE_SETUPTOOLS' in os.environ)
 if issetuptools:
     from setuptools import setup
 else:
     from distutils.core import setup
 from distutils.ccompiler import new_compiler
 from distutils.core import Command, Extension
 from distutils.dist import Distribution
 from distutils.command.build import build
 from distutils.command.build_ext import build_ext
 from distutils.command.build_py import build_py
 from distutils.command.build_scripts import build_scripts
 from distutils.command.install import install
 from distutils.command.install_lib import install_lib
 from distutils.command.install_scripts import install_scripts
 from distutils.spawn import spawn, find_executable
 from distutils import file_util
 from distutils.errors import (
     CCompilerError,
     DistutilsError,
     DistutilsExecError,
 )
 from distutils.sysconfig import get_python_inc, get_config_var
 from distutils.version import StrictVersion
 
 def write_if_changed(path, content):
     """Write content to a file iff the content hasn't changed."""
     if os.path.exists(path):
         with open(path, 'rb') as fh:
             current = fh.read()
     else:
         current = b''
 
     if current != content:
         with open(path, 'wb') as fh:
             fh.write(content)
 
 scripts = ['hg']
 if os.name == 'nt':
     # We remove hg.bat if we are able to build hg.exe.
     scripts.append('contrib/win32/hg.bat')
 
 def cancompile(cc, code):
     tmpdir = tempfile.mkdtemp(prefix='hg-install-')
     devnull = oldstderr = None
     try:
         fname = os.path.join(tmpdir, 'testcomp.c')
         f = open(fname, 'w')
         f.write(code)
         f.close()
         # Redirect stderr to /dev/null to hide any error messages
         # from the compiler.
         # This will have to be changed if we ever have to check
         # for a function on Windows.
         devnull = open('/dev/null', 'w')
         oldstderr = os.dup(sys.stderr.fileno())
         os.dup2(devnull.fileno(), sys.stderr.fileno())
         objects = cc.compile([fname], output_dir=tmpdir)
         cc.link_executable(objects, os.path.join(tmpdir, "a.out"))
         return True
     except Exception:
         return False
     finally:
         if oldstderr is not None:
             os.dup2(oldstderr, sys.stderr.fileno())
         if devnull is not None:
             devnull.close()
         shutil.rmtree(tmpdir)
 
 # simplified version of distutils.ccompiler.CCompiler.has_function
 # that actually removes its temporary files.
 def hasfunction(cc, funcname):
     code = 'int main(void) { %s(); }\n' % funcname
     return cancompile(cc, code)
 
 def hasheader(cc, headername):
     code = '#include <%s>\nint main(void) { return 0; }\n' % headername
     return cancompile(cc, code)
 
 # py2exe needs to be installed to work
 try:
     import py2exe
     py2exe.Distribution # silence unused import warning
     py2exeloaded = True
     # import py2exe's patched Distribution class
     from distutils.core import Distribution
 except ImportError:
     py2exeloaded = False
 
 def runcmd(cmd, env):
     p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
                          stderr=subprocess.PIPE, env=env)
     out, err = p.communicate()
     return p.returncode, out, err
 
 class hgcommand(object):
     def __init__(self, cmd, env):
         self.cmd = cmd
         self.env = env
 
     def run(self, args):
         cmd = self.cmd + args
         returncode, out, err = runcmd(cmd, self.env)
         err = filterhgerr(err)
         if err or returncode != 0:
             printf("stderr from '%s':" % (' '.join(cmd)), file=sys.stderr)
             printf(err, file=sys.stderr)
             return ''
         return out
 
 def filterhgerr(err):
     # If root is executing setup.py, but the repository is owned by
     # another user (as in "sudo python setup.py install") we will get
     # trust warnings since the .hg/hgrc file is untrusted. That is
     # fine, we don't want to load it anyway.  Python may warn about
     # a missing __init__.py in mercurial/locale, we also ignore that.
     err = [e for e in err.splitlines()
            if (not e.startswith(b'not trusting file')
                and not e.startswith(b'warning: Not importing')
                and not e.startswith(b'obsolete feature not enabled')
                and not e.startswith(b'devel-warn:'))]
     return b'\n'.join(b'  ' + e for e in err)
 
 def findhg():
     """Try to figure out how we should invoke hg for examining the local
     repository contents.
 
     Returns an hgcommand object."""
     # By default, prefer the "hg" command in the user's path.  This was
     # presumably the hg command that the user used to create this repository.
     #
     # This repository may require extensions or other settings that would not
     # be enabled by running the hg script directly from this local repository.
     hgenv = os.environ.copy()
     # Use HGPLAIN to disable hgrc settings that would change output formatting,
     # and disable localization for the same reasons.
     hgenv['HGPLAIN'] = '1'
     hgenv['LANGUAGE'] = 'C'
     hgcmd = ['hg']
     # Run a simple "hg log" command just to see if using hg from the user's
     # path works and can successfully interact with this repository.
     check_cmd = ['log', '-r.', '-Ttest']
     try:
         retcode, out, err = runcmd(hgcmd + check_cmd, hgenv)
     except EnvironmentError:
         retcode = -1
     if retcode == 0 and not filterhgerr(err):
         return hgcommand(hgcmd, hgenv)
 
     # Fall back to trying the local hg installation.
     hgenv = localhgenv()
     hgcmd = [sys.executable, 'hg']
     try:
         retcode, out, err = runcmd(hgcmd + check_cmd, hgenv)
     except EnvironmentError:
         retcode = -1
     if retcode == 0 and not filterhgerr(err):
         return hgcommand(hgcmd, hgenv)
 
     raise SystemExit('Unable to find a working hg binary to extract the '
                      'version from the repository tags')
 
 def localhgenv():
     """Get an environment dictionary to use for invoking or importing
     mercurial from the local repository."""
     # Execute hg out of this directory with a custom environment which takes
     # care to not use any hgrc files and do no localization.
     env = {'HGMODULEPOLICY': 'py',
            'HGRCPATH': '',
            'LANGUAGE': 'C',
            'PATH': ''} # make pypi modules that use os.environ['PATH'] happy
     if 'LD_LIBRARY_PATH' in os.environ:
         env['LD_LIBRARY_PATH'] = os.environ['LD_LIBRARY_PATH']
     if 'SystemRoot' in os.environ:
         # SystemRoot is required by Windows to load various DLLs.  See:
         # https://bugs.python.org/issue13524#msg148850
         env['SystemRoot'] = os.environ['SystemRoot']
     return env
 
 version = ''
 
 if os.path.isdir('.hg'):
     hg = findhg()
     cmd = ['log', '-r', '.', '--template', '{tags}\n']
     numerictags = [t for t in sysstr(hg.run(cmd)).split() if t[0:1].isdigit()]
     hgid = sysstr(hg.run(['id', '-i'])).strip()
     if not hgid:
         # Bail out if hg is having problems interacting with this repository,
         # rather than falling through and producing a bogus version number.
         # Continuing with an invalid version number will break extensions
         # that define minimumhgversion.
         raise SystemExit('Unable to determine hg version from local repository')
     if numerictags: # tag(s) found
         version = numerictags[-1]
         if hgid.endswith('+'): # propagate the dirty status to the tag
             version += '+'
     else: # no tag found
         ltagcmd = ['parents', '--template', '{latesttag}']
         ltag = sysstr(hg.run(ltagcmd))
         changessincecmd = ['log', '-T', 'x\n', '-r', "only(.,'%s')" % ltag]
         changessince = len(hg.run(changessincecmd).splitlines())
         version = '%s+%s-%s' % (ltag, changessince, hgid)
     if version.endswith('+'):
         version += time.strftime('%Y%m%d')
 elif os.path.exists('.hg_archival.txt'):
     kw = dict([[t.strip() for t in l.split(':', 1)]
                for l in open('.hg_archival.txt')])
     if 'tag' in kw:
         version = kw['tag']
     elif 'latesttag' in kw:
         if 'changessincelatesttag' in kw:
             version = '%(latesttag)s+%(changessincelatesttag)s-%(node).12s' % kw
         else:
             version = '%(latesttag)s+%(latesttagdistance)s-%(node).12s' % kw
     else:
         version = kw.get('node', '')[:12]
 
 if version:
     versionb = version
     if not isinstance(versionb, bytes):
         versionb = versionb.encode('ascii')
 
     write_if_changed('mercurial/__version__.py', b''.join([
         b'# this file is autogenerated by setup.py\n'
         b'version = "%s"\n' % versionb,
     ]))
 
 try:
     oldpolicy = os.environ.get('HGMODULEPOLICY', None)
     os.environ['HGMODULEPOLICY'] = 'py'
     from mercurial import __version__
     version = __version__.version
 except ImportError:
     version = 'unknown'
 finally:
     if oldpolicy is None:
         del os.environ['HGMODULEPOLICY']
     else:
         os.environ['HGMODULEPOLICY'] = oldpolicy
 
 class hgbuild(build):
     # Insert hgbuildmo first so that files in mercurial/locale/ are found
     # when build_py is run next.
     sub_commands = [('build_mo', None)] + build.sub_commands
 
 class hgbuildmo(build):
 
     description = "build translations (.mo files)"
 
     def run(self):
         if not find_executable('msgfmt'):
             self.warn("could not find msgfmt executable, no translations "
                      "will be built")
             return
 
         podir = 'i18n'
         if not os.path.isdir(podir):
             self.warn("could not find %s/ directory" % podir)
             return
 
         join = os.path.join
         for po in os.listdir(podir):
             if not po.endswith('.po'):
                 continue
             pofile = join(podir, po)
             modir = join('locale', po[:-3], 'LC_MESSAGES')
             mofile = join(modir, 'hg.mo')
             mobuildfile = join('mercurial', mofile)
             cmd = ['msgfmt', '-v', '-o', mobuildfile, pofile]
             if sys.platform != 'sunos5':
                 # msgfmt on Solaris does not know about -c
                 cmd.append('-c')
             self.mkpath(join('mercurial', modir))
             self.make_file([pofile], mobuildfile, spawn, (cmd,))
 
 
 class hgdist(Distribution):
     pure = False
     cffi = ispypy
 
     global_options = Distribution.global_options + \
                      [('pure', None, "use pure (slow) Python "
                         "code instead of C extensions"),
                      ]
 
     def has_ext_modules(self):
         # self.ext_modules is emptied in hgbuildpy.finalize_options which is
         # too late for some cases
         return not self.pure and Distribution.has_ext_modules(self)
 
 # This is ugly as a one-liner. So use a variable.
 buildextnegops = dict(getattr(build_ext, 'negative_options', {}))
 buildextnegops['no-zstd'] = 'zstd'
 
 class hgbuildext(build_ext):
     user_options = build_ext.user_options + [
         ('zstd', None, 'compile zstd bindings [default]'),
         ('no-zstd', None, 'do not compile zstd bindings'),
     ]
 
     boolean_options = build_ext.boolean_options + ['zstd']
     negative_opt = buildextnegops
 
     def initialize_options(self):
         self.zstd = True
         return build_ext.initialize_options(self)
 
     def build_extensions(self):
         # Filter out zstd if disabled via argument.
         if not self.zstd:
             self.extensions = [e for e in self.extensions
                                if e.name != 'mercurial.zstd']
 
         return build_ext.build_extensions(self)
 
     def build_extension(self, ext):
         try:
             build_ext.build_extension(self, ext)
         except CCompilerError:
             if not getattr(ext, 'optional', False):
                 raise
             log.warn("Failed to build optional extension '%s' (skipping)",
                      ext.name)
 
 class hgbuildscripts(build_scripts):
     def run(self):
         if os.name != 'nt' or self.distribution.pure:
             return build_scripts.run(self)
 
         exebuilt = False
         try:
             self.run_command('build_hgexe')
             exebuilt = True
         except (DistutilsError, CCompilerError):
             log.warn('failed to build optional hg.exe')
 
         if exebuilt:
             # Copying hg.exe to the scripts build directory ensures it is
             # installed by the install_scripts command.
             hgexecommand = self.get_finalized_command('build_hgexe')
             dest = os.path.join(self.build_dir, 'hg.exe')
             self.mkpath(self.build_dir)
             self.copy_file(hgexecommand.hgexepath, dest)
 
             # Remove hg.bat because it is redundant with hg.exe.
             self.scripts.remove('contrib/win32/hg.bat')
 
         return build_scripts.run(self)
 
 class hgbuildpy(build_py):
     def finalize_options(self):
         build_py.finalize_options(self)
 
         if self.distribution.pure:
             self.distribution.ext_modules = []
         elif self.distribution.cffi:
             from mercurial.cffi import (
                 bdiffbuild,
                 mpatchbuild,
             )
             exts = [mpatchbuild.ffi.distutils_extension(),
                     bdiffbuild.ffi.distutils_extension()]
             # cffi modules go here
             if sys.platform == 'darwin':
                 from mercurial.cffi import osutilbuild
                 exts.append(osutilbuild.ffi.distutils_extension())
             self.distribution.ext_modules = exts
         else:
             h = os.path.join(get_python_inc(), 'Python.h')
             if not os.path.exists(h):
                 raise SystemExit('Python headers are required to build '
                                  'Mercurial but weren\'t found in %s' % h)
 
     def run(self):
         basepath = os.path.join(self.build_lib, 'mercurial')
         self.mkpath(basepath)
 
         if self.distribution.pure:
             modulepolicy = 'py'
         elif self.build_lib == '.':
             # in-place build should run without rebuilding C extensions
             modulepolicy = 'allow'
         else:
             modulepolicy = 'c'
 
         content = b''.join([
             b'# this file is autogenerated by setup.py\n',
             b'modulepolicy = b"%s"\n' % modulepolicy.encode('ascii'),
         ])
         write_if_changed(os.path.join(basepath, '__modulepolicy__.py'),
                          content)
 
         build_py.run(self)
 
 class buildhgextindex(Command):
     description = 'generate prebuilt index of hgext (for frozen package)'
     user_options = []
     _indexfilename = 'hgext/__index__.py'
 
     def initialize_options(self):
         pass
 
     def finalize_options(self):
         pass
 
     def run(self):
         if os.path.exists(self._indexfilename):
             with open(self._indexfilename, 'w') as f:
                 f.write('# empty\n')
 
         # here no extension enabled, disabled() lists up everything
         code = ('import pprint; from mercurial import extensions; '
                 'pprint.pprint(extensions.disabled())')
         returncode, out, err = runcmd([sys.executable, '-c', code],
                                       localhgenv())
         if err or returncode != 0:
             raise DistutilsExecError(err)
 
         with open(self._indexfilename, 'w') as f:
             f.write('# this file is autogenerated by setup.py\n')
             f.write('docs = ')
             f.write(out)
 
 class buildhgexe(build_ext):
     description = 'compile hg.exe from mercurial/exewrapper.c'
     user_options = build_ext.user_options + [
         ('long-paths-support', None, 'enable support for long paths on '
                                      'Windows (off by default and '
                                      'experimental)'),
     ]
 
     LONG_PATHS_MANIFEST = """
     <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
     <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
         <application>
             <windowsSettings
             xmlns:ws2="http://schemas.microsoft.com/SMI/2016/WindowsSettings">
                 <ws2:longPathAware>true</ws2:longPathAware>
             </windowsSettings>
         </application>
     </assembly>"""
 
     def initialize_options(self):
         build_ext.initialize_options(self)
         self.long_paths_support = False
 
     def build_extensions(self):
         if os.name != 'nt':
             return
         if isinstance(self.compiler, HackedMingw32CCompiler):
             self.compiler.compiler_so = self.compiler.compiler # no -mdll
             self.compiler.dll_libraries = [] # no -lmsrvc90
 
         # Different Python installs can have different Python library
         # names. e.g. the official CPython distribution uses pythonXY.dll
         # and MinGW uses libpythonX.Y.dll.
         _kernel32 = ctypes.windll.kernel32
         _kernel32.GetModuleFileNameA.argtypes = [ctypes.c_void_p,
                                                  ctypes.c_void_p,
                                                  ctypes.c_ulong]
         _kernel32.GetModuleFileNameA.restype = ctypes.c_ulong
         size = 1000
         buf = ctypes.create_string_buffer(size + 1)
         filelen = _kernel32.GetModuleFileNameA(sys.dllhandle, ctypes.byref(buf),
                                                size)
 
         if filelen > 0 and filelen != size:
             dllbasename = os.path.basename(buf.value)
             if not dllbasename.lower().endswith('.dll'):
                 raise SystemExit('Python DLL does not end with .dll: %s' %
                                  dllbasename)
             pythonlib = dllbasename[:-4]
         else:
             log.warn('could not determine Python DLL filename; '
                      'assuming pythonXY')
 
             hv = sys.hexversion
             pythonlib = 'python%d%d' % (hv >> 24, (hv >> 16) & 0xff)
 
         log.info('using %s as Python library name' % pythonlib)
         with open('mercurial/hgpythonlib.h', 'wb') as f:
             f.write('/* this file is autogenerated by setup.py */\n')
             f.write('#define HGPYTHONLIB "%s"\n' % pythonlib)
         objects = self.compiler.compile(['mercurial/exewrapper.c'],
                                          output_dir=self.build_temp)
         dir = os.path.dirname(self.get_ext_fullpath('dummy'))
         self.hgtarget = os.path.join(dir, 'hg')
         self.compiler.link_executable(objects, self.hgtarget,
                                       libraries=[],
                                       output_dir=self.build_temp)
         if self.long_paths_support:
             self.addlongpathsmanifest()
 
     def addlongpathsmanifest(self):
         """Add manifest pieces so that hg.exe understands long paths
 
         This is an EXPERIMENTAL feature, use with care.
         To enable long paths support, one needs to do two things:
         - build Mercurial with --long-paths-support option
         - change HKLM\SYSTEM\CurrentControlSet\Control\FileSystem\
                  LongPathsEnabled to have value 1.
 
         Please ignore 'warning 81010002: Unrecognized Element "longPathAware"';
         it happens because Mercurial uses mt.exe circa 2008, which is not
         yet aware of long paths support in the manifest (I think so at least).
         This does not stop mt.exe from embedding/merging the XML properly.
 
         Why resource #1 should be used for .exe manifests? I don't know and
         wasn't able to find an explanation for mortals. But it seems to work.
         """
         exefname = self.compiler.executable_filename(self.hgtarget)
         fdauto, manfname = tempfile.mkstemp(suffix='.hg.exe.manifest')
         os.close(fdauto)
         with open(manfname, 'w') as f:
             f.write(self.LONG_PATHS_MANIFEST)
         log.info("long paths manifest is written to '%s'" % manfname)
         inputresource = '-inputresource:%s;#1' % exefname
         outputresource = '-outputresource:%s;#1' % exefname
         log.info("running mt.exe to update hg.exe's manifest in-place")
         # supplying both -manifest and -inputresource to mt.exe makes
         # it merge the embedded and supplied manifests in the -outputresource
         self.spawn(['mt.exe', '-nologo', '-manifest', manfname,
                     inputresource, outputresource])
         log.info("done updating hg.exe's manifest")
         os.remove(manfname)
 
     @property
     def hgexepath(self):
         dir = os.path.dirname(self.get_ext_fullpath('dummy'))
         return os.path.join(self.build_temp, dir, 'hg.exe')
 
 class hginstall(install):
 
     user_options = install.user_options + [
         ('old-and-unmanageable', None,
          'noop, present for eggless setuptools compat'),
         ('single-version-externally-managed', None,
          'noop, present for eggless setuptools compat'),
     ]
 
     # Also helps setuptools not be sad while we refuse to create eggs.
     single_version_externally_managed = True
 
     def get_sub_commands(self):
         # Screen out egg related commands to prevent egg generation.  But allow
         # mercurial.egg-info generation, since that is part of modern
         # packaging.
         excl = set(['bdist_egg'])
         return filter(lambda x: x not in excl, install.get_sub_commands(self))
 
 class hginstalllib(install_lib):
     '''
     This is a specialization of install_lib that replaces the copy_file used
     there so that it supports setting the mode of files after copying them,
     instead of just preserving the mode that the files originally had.  If your
     system has a umask of something like 027, preserving the permissions when
     copying will lead to a broken install.
 
     Note that just passing keep_permissions=False to copy_file would be
     insufficient, as it might still be applying a umask.
     '''
 
     def run(self):
         realcopyfile = file_util.copy_file
         def copyfileandsetmode(*args, **kwargs):
             src, dst = args[0], args[1]
             dst, copied = realcopyfile(*args, **kwargs)
             if copied:
                 st = os.stat(src)
                 # Persist executable bit (apply it to group and other if user
                 # has it)
                 if st[stat.ST_MODE] & stat.S_IXUSR:
                     setmode = int('0755', 8)
                 else:
                     setmode = int('0644', 8)
                 m = stat.S_IMODE(st[stat.ST_MODE])
                 m = (m & ~int('0777', 8)) | setmode
                 os.chmod(dst, m)
         file_util.copy_file = copyfileandsetmode
         try:
             install_lib.run(self)
         finally:
             file_util.copy_file = realcopyfile
 
 class hginstallscripts(install_scripts):
     '''
     This is a specialization of install_scripts that replaces the @LIBDIR@ with
     the configured directory for modules. If possible, the path is made relative
     to the directory for scripts.
     '''
 
     def initialize_options(self):
         install_scripts.initialize_options(self)
 
         self.install_lib = None
 
     def finalize_options(self):
         install_scripts.finalize_options(self)
         self.set_undefined_options('install',
                                    ('install_lib', 'install_lib'))
 
     def run(self):
         install_scripts.run(self)
 
         # It only makes sense to replace @LIBDIR@ with the install path if
         # the install path is known. For wheels, the logic below calculates
         # the libdir to be "../..". This is because the internal layout of a
         # wheel archive looks like:
         #
         #   mercurial-3.6.1.data/scripts/hg
         #   mercurial/__init__.py
         #
         # When installing wheels, the subdirectories of the "<pkg>.data"
         # directory are translated to system local paths and files therein
         # are copied in place. The mercurial/* files are installed into the
         # site-packages directory. However, the site-packages directory
         # isn't known until wheel install time. This means we have no clue
         # at wheel generation time what the installed site-packages directory
         # will be. And, wheels don't appear to provide the ability to register
         # custom code to run during wheel installation. This all means that
         # we can't reliably set the libdir in wheels: the default behavior
         # of looking in sys.path must do.
 
         if (os.path.splitdrive(self.install_dir)[0] !=
             os.path.splitdrive(self.install_lib)[0]):
             # can't make relative paths from one drive to another, so use an
             # absolute path instead
             libdir = self.install_lib
         else:
             common = os.path.commonprefix((self.install_dir, self.install_lib))
             rest = self.install_dir[len(common):]
             uplevel = len([n for n in os.path.split(rest) if n])
 
             libdir = uplevel * ('..' + os.sep) + self.install_lib[len(common):]
 
         for outfile in self.outfiles:
             with open(outfile, 'rb') as fp:
                 data = fp.read()
 
             # skip binary files
             if b'\0' in data:
                 continue
 
             # During local installs, the shebang will be rewritten to the final
             # install path. During wheel packaging, the shebang has a special
             # value.
             if data.startswith(b'#!python'):
                 log.info('not rewriting @LIBDIR@ in %s because install path '
                          'not known' % outfile)
                 continue
 
             data = data.replace(b'@LIBDIR@', libdir.encode(libdir_escape))
             with open(outfile, 'wb') as fp:
                 fp.write(data)
 
 cmdclass = {'build': hgbuild,
             'build_mo': hgbuildmo,
             'build_ext': hgbuildext,
             'build_py': hgbuildpy,
             'build_scripts': hgbuildscripts,
             'build_hgextindex': buildhgextindex,
             'install': hginstall,
             'install_lib': hginstalllib,
             'install_scripts': hginstallscripts,
             'build_hgexe': buildhgexe,
             }
 
 packages = ['mercurial',
             'mercurial.cext',
             'mercurial.cffi',
             'mercurial.hgweb',
-            'mercurial.httpclient',
             'mercurial.pure',
             'mercurial.thirdparty',
             'mercurial.thirdparty.attr',
             'hgext', 'hgext.convert', 'hgext.fsmonitor',
             'hgext.fsmonitor.pywatchman', 'hgext.highlight',
             'hgext.largefiles', 'hgext.lfs', 'hgext.narrow',
             'hgext.zeroconf', 'hgext3rd',
             'hgdemandimport']
 
 common_depends = ['mercurial/bitmanipulation.h',
                   'mercurial/compat.h',
                   'mercurial/cext/util.h']
 common_include_dirs = ['mercurial']
 
 osutil_cflags = []
 osutil_ldflags = []
 
 # platform specific macros
 for plat, func in [('bsd', 'setproctitle')]:
     if re.search(plat, sys.platform) and hasfunction(new_compiler(), func):
         osutil_cflags.append('-DHAVE_%s' % func.upper())
 
 for plat, macro, code in [
     ('bsd|darwin', 'BSD_STATFS', '''
      #include <sys/param.h>
      #include <sys/mount.h>
      int main() { struct statfs s; return sizeof(s.f_fstypename); }
      '''),
     ('linux', 'LINUX_STATFS', '''
      #include <linux/magic.h>
      #include <sys/vfs.h>
      int main() { struct statfs s; return sizeof(s.f_type); }
      '''),
 ]:
     if re.search(plat, sys.platform) and cancompile(new_compiler(), code):
         osutil_cflags.append('-DHAVE_%s' % macro)
 
 if sys.platform == 'darwin':
     osutil_ldflags += ['-framework', 'ApplicationServices']
 
 extmodules = [
     Extension('mercurial.cext.base85', ['mercurial/cext/base85.c'],
               include_dirs=common_include_dirs,
               depends=common_depends),
     Extension('mercurial.cext.bdiff', ['mercurial/bdiff.c',
                                        'mercurial/cext/bdiff.c'],
               include_dirs=common_include_dirs,
               depends=common_depends + ['mercurial/bdiff.h']),
     Extension('mercurial.cext.diffhelpers', ['mercurial/cext/diffhelpers.c'],
               include_dirs=common_include_dirs,
               depends=common_depends),
     Extension('mercurial.cext.mpatch', ['mercurial/mpatch.c',
                                         'mercurial/cext/mpatch.c'],
               include_dirs=common_include_dirs,
               depends=common_depends),
     Extension('mercurial.cext.parsers', ['mercurial/cext/charencode.c',
                                          'mercurial/cext/dirs.c',
                                          'mercurial/cext/manifest.c',
                                          'mercurial/cext/parsers.c',
                                          'mercurial/cext/pathencode.c',
                                          'mercurial/cext/revlog.c'],
               include_dirs=common_include_dirs,
               depends=common_depends + ['mercurial/cext/charencode.h']),
     Extension('mercurial.cext.osutil', ['mercurial/cext/osutil.c'],
               include_dirs=common_include_dirs,
               extra_compile_args=osutil_cflags,
               extra_link_args=osutil_ldflags,
               depends=common_depends),
     Extension('hgext.fsmonitor.pywatchman.bser',
               ['hgext/fsmonitor/pywatchman/bser.c']),
     ]
 
 sys.path.insert(0, 'contrib/python-zstandard')
 import setup_zstd
 extmodules.append(setup_zstd.get_c_extension(name='mercurial.zstd'))
 
 try:
     from distutils import cygwinccompiler
 
     # the -mno-cygwin option has been deprecated for years
     mingw32compilerclass = cygwinccompiler.Mingw32CCompiler
 
     class HackedMingw32CCompiler(cygwinccompiler.Mingw32CCompiler):
         def __init__(self, *args, **kwargs):
             mingw32compilerclass.__init__(self, *args, **kwargs)
             for i in 'compiler compiler_so linker_exe linker_so'.split():
                 try:
                     getattr(self, i).remove('-mno-cygwin')
                 except ValueError:
                     pass
 
     cygwinccompiler.Mingw32CCompiler = HackedMingw32CCompiler
 except ImportError:
     # the cygwinccompiler package is not available on some Python
     # distributions like the ones from the optware project for Synology
     # DiskStation boxes
     class HackedMingw32CCompiler(object):
         pass
 
 if os.name == 'nt':
     # Allow compiler/linker flags to be added to Visual Studio builds.  Passing
     # extra_link_args to distutils.extensions.Extension() doesn't have any
     # effect.
     from distutils import msvccompiler
 
     msvccompilerclass = msvccompiler.MSVCCompiler
 
     class HackedMSVCCompiler(msvccompiler.MSVCCompiler):
         def initialize(self):
             msvccompilerclass.initialize(self)
             # "warning LNK4197: export 'func' specified multiple times"
             self.ldflags_shared.append('/ignore:4197')
             self.ldflags_shared_debug.append('/ignore:4197')
 
     msvccompiler.MSVCCompiler = HackedMSVCCompiler
 
 packagedata = {'mercurial': ['locale/*/LC_MESSAGES/hg.mo',
                              'help/*.txt',
                              'help/internals/*.txt',
                              'default.d/*.rc',
                              'dummycert.pem']}
 
 def ordinarypath(p):
     return p and p[0] != '.' and p[-1] != '~'
 
 for root in ('templates',):
     for curdir, dirs, files in os.walk(os.path.join('mercurial', root)):
         curdir = curdir.split(os.sep, 1)[1]
         dirs[:] = filter(ordinarypath, dirs)
         for f in filter(ordinarypath, files):
             f = os.path.join(curdir, f)
             packagedata['mercurial'].append(f)
 
 datafiles = []
 
 # distutils expects version to be str/unicode. Converting it to
 # unicode on Python 2 still works because it won't contain any
 # non-ascii bytes and will be implicitly converted back to bytes
 # when operated on.
 assert isinstance(version, bytes)
 setupversion = version.decode('ascii')
 
 extra = {}
 
 if issetuptools:
     extra['python_requires'] = supportedpy
 if py2exeloaded:
     extra['console'] = [
         {'script':'hg',
          'copyright':'Copyright (C) 2005-2018 Matt Mackall and others',
          'product_version':version}]
     # sub command of 'build' because 'py2exe' does not handle sub_commands
     build.sub_commands.insert(0, ('build_hgextindex', None))
     # put dlls in sub directory so that they won't pollute PATH
     extra['zipfile'] = 'lib/library.zip'
 
 if os.name == 'nt':
     # Windows binary file versions for exe/dll files must have the
     # form W.X.Y.Z, where W,X,Y,Z are numbers in the range 0..65535
     setupversion = version.split('+', 1)[0]
 
 if sys.platform == 'darwin' and os.path.exists('/usr/bin/xcodebuild'):
     version = runcmd(['/usr/bin/xcodebuild', '-version'], {})[1].splitlines()
     if version:
         version = version[0]
         if sys.version_info[0] == 3:
             version = version.decode('utf-8')
         xcode4 = (version.startswith('Xcode') and
                   StrictVersion(version.split()[1]) >= StrictVersion('4.0'))
         xcode51 = re.match(r'^Xcode\s+5\.1', version) is not None
     else:
         # xcodebuild returns empty on OS X Lion with XCode 4.3 not
         # installed, but instead with only command-line tools. Assume
         # that only happens on >= Lion, thus no PPC support.
         xcode4 = True
         xcode51 = False
 
     # XCode 4.0 dropped support for ppc architecture, which is hardcoded in
     # distutils.sysconfig
     if xcode4:
         os.environ['ARCHFLAGS'] = ''
 
     # XCode 5.1 changes clang such that it now fails to compile if the
     # -mno-fused-madd flag is passed, but the version of Python shipped with
     # OS X 10.9 Mavericks includes this flag. This causes problems in all
     # C extension modules, and a bug has been filed upstream at
     # http://bugs.python.org/issue21244. We also need to patch this here
     # so Mercurial can continue to compile in the meantime.
     if xcode51:
         cflags = get_config_var('CFLAGS')
         if cflags and re.search(r'-mno-fused-madd\b', cflags) is not None:
             os.environ['CFLAGS'] = (
                 os.environ.get('CFLAGS', '') + ' -Qunused-arguments')
 
 setup(name='mercurial',
       version=setupversion,
       author='Matt Mackall and many others',
       author_email='[e-mail]',
       url='https://mercurial-scm.org/',
       download_url='https://mercurial-scm.org/release/',
       description=('Fast scalable distributed SCM (revision control, version '
                    'control) system'),
       long_description=('Mercurial is a distributed SCM tool written in Python.'
                         ' It is used by a number of large projects that require'
                         ' fast, reliable distributed revision control, such as '
                         'Mozilla.'),
       license='GNU GPLv2 or any later version',
       classifiers=[
           'Development Status :: 6 - Mature',
           'Environment :: Console',
           'Intended Audience :: Developers',
           'Intended Audience :: System Administrators',
           'License :: OSI Approved :: GNU General Public License (GPL)',
           'Natural Language :: Danish',
           'Natural Language :: English',
           'Natural Language :: German',
           'Natural Language :: Italian',
           'Natural Language :: Japanese',
           'Natural Language :: Portuguese (Brazilian)',
           'Operating System :: Microsoft :: Windows',
           'Operating System :: OS Independent',
           'Operating System :: POSIX',
           'Programming Language :: C',
           'Programming Language :: Python',
           'Topic :: Software Development :: Version Control',
       ],
       scripts=scripts,
       packages=packages,
       ext_modules=extmodules,
       data_files=datafiles,
       package_data=packagedata,
       cmdclass=cmdclass,
       distclass=hgdist,
       options={'py2exe': {'packages': ['hgdemandimport', 'hgext', 'email',
                                        # implicitly imported per module policy
                                        # (cffi wouldn't be used as a frozen exe)
                                        'mercurial.cext',
                                        #'mercurial.cffi',
                                        'mercurial.pure']},
                'bdist_mpkg': {'zipdist': False,
                               'license': 'COPYING',
                               'readme': 'contrib/macosx/Readme.html',
                               'welcome': 'contrib/macosx/Welcome.html',
                               },
                },
       **extra)

tests/test-check-code.t

@@ -1,55 +1,53 b''
 #require test-repo
 
   $ . "$TESTDIR/helpers-testrepo.sh"
   $ check_code="$TESTDIR"/../contrib/check-code.py
   $ cd "$TESTDIR"/..
 
 New errors are not allowed. Warnings are strongly discouraged.
 (The writing "no-che?k-code" is for not skipping this file when checking.)
 
   $ testrepohg locate \
   > -X contrib/python-zstandard \
   > -X hgext/fsmonitor/pywatchman \
   > -X mercurial/thirdparty \
   > | sed 's-\\-/-g' | "$check_code" --warnings --per-file=0 - || false
   Skipping i18n/polib.py it has no-che?k-code (glob)
-  Skipping mercurial/httpclient/__init__.py it has no-che?k-code (glob)
-  Skipping mercurial/httpclient/_readers.py it has no-che?k-code (glob)
   Skipping mercurial/statprof.py it has no-che?k-code (glob)
   Skipping tests/badserverext.py it has no-che?k-code (glob)
 
 @commands in debugcommands.py should be in alphabetical order.
 
   >>> import re
   >>> commands = []
   >>> with open('mercurial/debugcommands.py', 'rb') as fh:
   ...     for line in fh:
   ...         m = re.match("^@command\('([a-z]+)", line)
   ...         if m:
   ...             commands.append(m.group(1))
   >>> scommands = list(sorted(commands))
   >>> for i, command in enumerate(scommands):
   ...     if command != commands[i]:
   ...         print('commands in debugcommands.py not sorted; first differing '
   ...               'command is %s; expected %s' % (commands[i], command))
   ...         break
 
 Prevent adding new files in the root directory accidentally.
 
   $ testrepohg files 'glob:*'
   .arcconfig
   .clang-format
   .editorconfig
   .hgignore
   .hgsigs
   .hgtags
   .jshintrc
   CONTRIBUTING
   CONTRIBUTORS
   COPYING
   Makefile
   README.rst
   hg
   hgeditor
   hgweb.cgi
   setup.py

tests/test-commandserver.t

@@ -1,1024 +1,1022 b''
 #if windows
   $ PYTHONPATH="$TESTDIR/../contrib;$PYTHONPATH"
 #else
   $ PYTHONPATH="$TESTDIR/../contrib:$PYTHONPATH"
 #endif
   $ export PYTHONPATH
 
 typical client does not want echo-back messages, so test without it:
 
   $ grep -v '^promptecho ' < $HGRCPATH >> $HGRCPATH.new
   $ mv $HGRCPATH.new $HGRCPATH
 
   $ hg init repo
   $ cd repo
 
   >>> from __future__ import absolute_import, print_function
   >>> import os
   >>> import sys
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def hellomessage(server):
   ...     ch, data = readchannel(server)
   ...     print('%c, %r' % (ch, data))
   ...     # run an arbitrary command to make sure the next thing the server
   ...     # sends isn't part of the hello message
   ...     runcommand(server, ['id'])
   o, 'capabilities: getencoding runcommand\nencoding: *\npid: *' (glob)
   *** runcommand id
   000000000000 tip
 
   >>> from hgclient import check
   >>> @check
   ... def unknowncommand(server):
   ...     server.stdin.write('unknowncommand\n')
   abort: unknown command unknowncommand
 
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def checkruncommand(server):
   ...     # hello block
   ...     readchannel(server)
   ... 
   ...     # no args
   ...     runcommand(server, [])
   ... 
   ...     # global options
   ...     runcommand(server, ['id', '--quiet'])
   ... 
   ...     # make sure global options don't stick through requests
   ...     runcommand(server, ['id'])
   ... 
   ...     # --config
   ...     runcommand(server, ['id', '--config', 'ui.quiet=True'])
   ... 
   ...     # make sure --config doesn't stick
   ...     runcommand(server, ['id'])
   ... 
   ...     # negative return code should be masked
   ...     runcommand(server, ['id', '-runknown'])
   *** runcommand 
   Mercurial Distributed SCM
   
   basic commands:
   
    add           add the specified files on the next commit
    annotate      show changeset information by line for each file
    clone         make a copy of an existing repository
    commit        commit the specified files or all outstanding changes
    diff          diff repository (or selected files)
    export        dump the header and diffs for one or more changesets
    forget        forget the specified files on the next commit
    init          create a new repository in the given directory
    log           show revision history of entire repository or files
    merge         merge another revision into working directory
    pull          pull changes from the specified source
    push          push changes to the specified destination
    remove        remove the specified files on the next commit
    serve         start stand-alone webserver
    status        show changed files in the working directory
    summary       summarize working directory state
    update        update working directory (or switch revisions)
   
   (use 'hg help' for the full list of commands or 'hg -v' for details)
   *** runcommand id --quiet
   000000000000
   *** runcommand id
   000000000000 tip
   *** runcommand id --config ui.quiet=True
   000000000000
   *** runcommand id
   000000000000 tip
   *** runcommand id -runknown
   abort: unknown revision 'unknown'!
    [255]
 
   >>> from hgclient import check, readchannel
   >>> @check
   ... def inputeof(server):
   ...     readchannel(server)
   ...     server.stdin.write('runcommand\n')
   ...     # close stdin while server is waiting for input
   ...     server.stdin.close()
   ... 
   ...     # server exits with 1 if the pipe closed while reading the command
   ...     print('server exit code =', server.wait())
   server exit code = 1
 
   >>> from hgclient import check, readchannel, runcommand, stringio
   >>> @check
   ... def serverinput(server):
   ...     readchannel(server)
   ... 
   ...     patch = """
   ... # HG changeset patch
   ... # User test
   ... # Date 0 0
   ... # Node ID c103a3dec114d882c98382d684d8af798d09d857
   ... # Parent  0000000000000000000000000000000000000000
   ... 1
   ... 
   ... diff -r 000000000000 -r c103a3dec114 a
   ... --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   ... +++ b/a	Thu Jan 01 00:00:00 1970 +0000
   ... @@ -0,0 +1,1 @@
   ... +1
   ... """
   ... 
   ...     runcommand(server, ['import', '-'], input=stringio(patch))
   ...     runcommand(server, ['log'])
   *** runcommand import -
   applying patch from stdin
   *** runcommand log
   changeset:   0:eff892de26ec
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     1
   
 
 check strict parsing of early options:
 
   >>> import os
   >>> from hgclient import check, readchannel, runcommand
   >>> os.environ['HGPLAIN'] = '+strictflags'
   >>> @check
   ... def cwd(server):
   ...     readchannel(server)
   ...     runcommand(server, ['log', '-b', '--config=alias.log=!echo pwned',
   ...                         'default'])
   *** runcommand log -b --config=alias.log=!echo pwned default
   abort: unknown revision '--config=alias.log=!echo pwned'!
    [255]
 
 check that "histedit --commands=-" can read rules from the input channel:
 
   >>> import cStringIO
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def serverinput(server):
   ...     readchannel(server)
   ...     rules = 'pick eff892de26ec\n'
   ...     runcommand(server, ['histedit', '0', '--commands=-',
   ...                         '--config', 'extensions.histedit='],
   ...                input=cStringIO.StringIO(rules))
   *** runcommand histedit 0 --commands=- --config extensions.histedit=
 
 check that --cwd doesn't persist between requests:
 
   $ mkdir foo
   $ touch foo/bar
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def cwd(server):
   ...     readchannel(server)
   ...     runcommand(server, ['--cwd', 'foo', 'st', 'bar'])
   ...     runcommand(server, ['st', 'foo/bar'])
   *** runcommand --cwd foo st bar
   ? bar
   *** runcommand st foo/bar
   ? foo/bar
 
   $ rm foo/bar
 
 
 check that local configs for the cached repo aren't inherited when -R is used:
 
   $ cat <<EOF >> .hg/hgrc
   > [ui]
   > foo = bar
   > EOF
 
   >>> from hgclient import check, readchannel, runcommand, sep
   >>> @check
   ... def localhgrc(server):
   ...     readchannel(server)
   ... 
   ...     # the cached repo local hgrc contains ui.foo=bar, so showconfig should
   ...     # show it
   ...     runcommand(server, ['showconfig'], outfilter=sep)
   ... 
   ...     # but not for this repo
   ...     runcommand(server, ['init', 'foo'])
   ...     runcommand(server, ['-R', 'foo', 'showconfig', 'ui', 'defaults'])
   *** runcommand showconfig
   bundle.mainreporoot=$TESTTMP/repo
   devel.all-warnings=true
   devel.default-date=0 0
   extensions.fsmonitor= (fsmonitor !)
   largefiles.usercache=$TESTTMP/.cache/largefiles
   lfs.usercache=$TESTTMP/.cache/lfs
   ui.slash=True
   ui.interactive=False
   ui.mergemarkers=detailed
-  ui.usehttp2=true (?)
   ui.foo=bar
   ui.nontty=true
   web.address=localhost
   web\.ipv6=(?:True|False) (re)
   *** runcommand init foo
   *** runcommand -R foo showconfig ui defaults
   ui.slash=True
   ui.interactive=False
   ui.mergemarkers=detailed
-  ui.usehttp2=true (?)
   ui.nontty=true
 
   $ rm -R foo
 
 #if windows
   $ PYTHONPATH="$TESTTMP/repo;$PYTHONPATH"
 #else
   $ PYTHONPATH="$TESTTMP/repo:$PYTHONPATH"
 #endif
 
   $ cat <<EOF > hook.py
   > from __future__ import print_function
   > import sys
   > def hook(**args):
   >     print('hook talking')
   >     print('now try to read something: %r' % sys.stdin.read())
   > EOF
 
   >>> from hgclient import check, readchannel, runcommand, stringio
   >>> @check
   ... def hookoutput(server):
   ...     readchannel(server)
   ...     runcommand(server, ['--config',
   ...                         'hooks.pre-identify=python:hook.hook',
   ...                         'id'],
   ...                input=stringio('some input'))
   *** runcommand --config hooks.pre-identify=python:hook.hook id
   eff892de26ec tip
 
 Clean hook cached version
   $ rm hook.py*
   $ rm -Rf __pycache__
 
   $ echo a >> a
   >>> import os
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def outsidechanges(server):
   ...     readchannel(server)
   ...     runcommand(server, ['status'])
   ...     os.system('hg ci -Am2')
   ...     runcommand(server, ['tip'])
   ...     runcommand(server, ['status'])
   *** runcommand status
   M a
   *** runcommand tip
   changeset:   1:d3a0a68be6de
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   *** runcommand status
 
   >>> import os
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def bookmarks(server):
   ...     readchannel(server)
   ...     runcommand(server, ['bookmarks'])
   ... 
   ...     # changes .hg/bookmarks
   ...     os.system('hg bookmark -i bm1')
   ...     os.system('hg bookmark -i bm2')
   ...     runcommand(server, ['bookmarks'])
   ... 
   ...     # changes .hg/bookmarks.current
   ...     os.system('hg upd bm1 -q')
   ...     runcommand(server, ['bookmarks'])
   ... 
   ...     runcommand(server, ['bookmarks', 'bm3'])
   ...     f = open('a', 'ab')
   ...     f.write('a\n')
   ...     f.close()
   ...     runcommand(server, ['commit', '-Amm'])
   ...     runcommand(server, ['bookmarks'])
   ...     print('')
   *** runcommand bookmarks
   no bookmarks set
   *** runcommand bookmarks
      bm1                       1:d3a0a68be6de
      bm2                       1:d3a0a68be6de
   *** runcommand bookmarks
    * bm1                       1:d3a0a68be6de
      bm2                       1:d3a0a68be6de
   *** runcommand bookmarks bm3
   *** runcommand commit -Amm
   *** runcommand bookmarks
      bm1                       1:d3a0a68be6de
      bm2                       1:d3a0a68be6de
    * bm3                       2:aef17e88f5f0
   
 
   >>> import os
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def tagscache(server):
   ...     readchannel(server)
   ...     runcommand(server, ['id', '-t', '-r', '0'])
   ...     os.system('hg tag -r 0 foo')
   ...     runcommand(server, ['id', '-t', '-r', '0'])
   *** runcommand id -t -r 0
   
   *** runcommand id -t -r 0
   foo
 
   >>> import os
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def setphase(server):
   ...     readchannel(server)
   ...     runcommand(server, ['phase', '-r', '.'])
   ...     os.system('hg phase -r . -p')
   ...     runcommand(server, ['phase', '-r', '.'])
   *** runcommand phase -r .
   3: draft
   *** runcommand phase -r .
   3: public
 
   $ echo a >> a
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def rollback(server):
   ...     readchannel(server)
   ...     runcommand(server, ['phase', '-r', '.', '-p'])
   ...     runcommand(server, ['commit', '-Am.'])
   ...     runcommand(server, ['rollback'])
   ...     runcommand(server, ['phase', '-r', '.'])
   ...     print('')
   *** runcommand phase -r . -p
   no phases changed
   *** runcommand commit -Am.
   *** runcommand rollback
   repository tip rolled back to revision 3 (undo commit)
   working directory now based on revision 3
   *** runcommand phase -r .
   3: public
   
 
   >>> import os
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def branch(server):
   ...     readchannel(server)
   ...     runcommand(server, ['branch'])
   ...     os.system('hg branch foo')
   ...     runcommand(server, ['branch'])
   ...     os.system('hg branch default')
   *** runcommand branch
   default
   marked working directory as branch foo
   (branches are permanent and global, did you want a bookmark?)
   *** runcommand branch
   foo
   marked working directory as branch default
   (branches are permanent and global, did you want a bookmark?)
 
   $ touch .hgignore
   >>> import os
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def hgignore(server):
   ...     readchannel(server)
   ...     runcommand(server, ['commit', '-Am.'])
   ...     f = open('ignored-file', 'ab')
   ...     f.write('')
   ...     f.close()
   ...     f = open('.hgignore', 'ab')
   ...     f.write('ignored-file')
   ...     f.close()
   ...     runcommand(server, ['status', '-i', '-u'])
   ...     print('')
   *** runcommand commit -Am.
   adding .hgignore
   *** runcommand status -i -u
   I ignored-file
   
 
 cache of non-public revisions should be invalidated on repository change
 (issue4855):
 
   >>> import os
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def phasesetscacheaftercommit(server):
   ...     readchannel(server)
   ...     # load _phasecache._phaserevs and _phasesets
   ...     runcommand(server, ['log', '-qr', 'draft()'])
   ...     # create draft commits by another process
   ...     for i in range(5, 7):
   ...         f = open('a', 'ab')
   ...         f.seek(0, os.SEEK_END)
   ...         f.write('a\n')
   ...         f.close()
   ...         os.system('hg commit -Aqm%d' % i)
   ...     # new commits should be listed as draft revisions
   ...     runcommand(server, ['log', '-qr', 'draft()'])
   ...     print('')
   *** runcommand log -qr draft()
   4:7966c8e3734d
   *** runcommand log -qr draft()
   4:7966c8e3734d
   5:41f6602d1c4f
   6:10501e202c35
   
 
   >>> import os
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def phasesetscacheafterstrip(server):
   ...     readchannel(server)
   ...     # load _phasecache._phaserevs and _phasesets
   ...     runcommand(server, ['log', '-qr', 'draft()'])
   ...     # strip cached revisions by another process
   ...     os.system('hg --config extensions.strip= strip -q 5')
   ...     # shouldn't abort by "unknown revision '6'"
   ...     runcommand(server, ['log', '-qr', 'draft()'])
   ...     print('')
   *** runcommand log -qr draft()
   4:7966c8e3734d
   5:41f6602d1c4f
   6:10501e202c35
   *** runcommand log -qr draft()
   4:7966c8e3734d
   
 
 cache of phase roots should be invalidated on strip (issue3827):
 
   >>> import os
   >>> from hgclient import check, readchannel, runcommand, sep
   >>> @check
   ... def phasecacheafterstrip(server):
   ...     readchannel(server)
   ... 
   ...     # create new head, 5:731265503d86
   ...     runcommand(server, ['update', '-C', '0'])
   ...     f = open('a', 'ab')
   ...     f.write('a\n')
   ...     f.close()
   ...     runcommand(server, ['commit', '-Am.', 'a'])
   ...     runcommand(server, ['log', '-Gq'])
   ... 
   ...     # make it public; draft marker moves to 4:7966c8e3734d
   ...     runcommand(server, ['phase', '-p', '.'])
   ...     # load _phasecache.phaseroots
   ...     runcommand(server, ['phase', '.'], outfilter=sep)
   ... 
   ...     # strip 1::4 outside server
   ...     os.system('hg -q --config extensions.mq= strip 1')
   ... 
   ...     # shouldn't raise "7966c8e3734d: no node!"
   ...     runcommand(server, ['branches'])
   *** runcommand update -C 0
   1 files updated, 0 files merged, 2 files removed, 0 files unresolved
   (leaving bookmark bm3)
   *** runcommand commit -Am. a
   created new head
   *** runcommand log -Gq
   @  5:731265503d86
   |
   | o  4:7966c8e3734d
   | |
   | o  3:b9b85890c400
   | |
   | o  2:aef17e88f5f0
   | |
   | o  1:d3a0a68be6de
   |/
   o  0:eff892de26ec
   
   *** runcommand phase -p .
   *** runcommand phase .
   5: public
   *** runcommand branches
   default                        1:731265503d86
 
 in-memory cache must be reloaded if transaction is aborted. otherwise
 changelog and manifest would have invalid node:
 
   $ echo a >> a
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def txabort(server):
   ...     readchannel(server)
   ...     runcommand(server, ['commit', '--config', 'hooks.pretxncommit=false',
   ...                         '-mfoo'])
   ...     runcommand(server, ['verify'])
   *** runcommand commit --config hooks.pretxncommit=false -mfoo
   transaction abort!
   rollback completed
   abort: pretxncommit hook exited with status 1
    [255]
   *** runcommand verify
   checking changesets
   checking manifests
   crosschecking files in changesets and manifests
   checking files
   1 files, 2 changesets, 2 total revisions
   $ hg revert --no-backup -aq
 
   $ cat >> .hg/hgrc << EOF
   > [experimental]
   > evolution.createmarkers=True
   > EOF
 
   >>> import os
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def obsolete(server):
   ...     readchannel(server)
   ... 
   ...     runcommand(server, ['up', 'null'])
   ...     runcommand(server, ['phase', '-df', 'tip'])
   ...     cmd = 'hg debugobsolete `hg log -r tip --template {node}`'
   ...     if os.name == 'nt':
   ...         cmd = 'sh -c "%s"' % cmd # run in sh, not cmd.exe
   ...     os.system(cmd)
   ...     runcommand(server, ['log', '--hidden'])
   ...     runcommand(server, ['log'])
   *** runcommand up null
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   *** runcommand phase -df tip
   obsoleted 1 changesets
   *** runcommand log --hidden
   changeset:   1:731265503d86
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   obsolete:    pruned
   summary:     .
   
   changeset:   0:eff892de26ec
   bookmark:    bm1
   bookmark:    bm2
   bookmark:    bm3
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     1
   
   *** runcommand log
   changeset:   0:eff892de26ec
   bookmark:    bm1
   bookmark:    bm2
   bookmark:    bm3
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     1
   
 
   $ cat <<EOF >> .hg/hgrc
   > [extensions]
   > mq =
   > EOF
 
   >>> import os
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def mqoutsidechanges(server):
   ...     readchannel(server)
   ... 
   ...     # load repo.mq
   ...     runcommand(server, ['qapplied'])
   ...     os.system('hg qnew 0.diff')
   ...     # repo.mq should be invalidated
   ...     runcommand(server, ['qapplied'])
   ... 
   ...     runcommand(server, ['qpop', '--all'])
   ...     os.system('hg qqueue --create foo')
   ...     # repo.mq should be recreated to point to new queue
   ...     runcommand(server, ['qqueue', '--active'])
   *** runcommand qapplied
   *** runcommand qapplied
   0.diff
   *** runcommand qpop --all
   popping 0.diff
   patch queue now empty
   *** runcommand qqueue --active
   foo
 
   $ cat <<EOF > dbgui.py
   > import os
   > import sys
   > from mercurial import commands, registrar
   > cmdtable = {}
   > command = registrar.command(cmdtable)
   > @command(b"debuggetpass", norepo=True)
   > def debuggetpass(ui):
   >     ui.write("%s\\n" % ui.getpass())
   > @command(b"debugprompt", norepo=True)
   > def debugprompt(ui):
   >     ui.write("%s\\n" % ui.prompt("prompt:"))
   > @command(b"debugreadstdin", norepo=True)
   > def debugreadstdin(ui):
   >     ui.write("read: %r\n" % sys.stdin.read(1))
   > @command(b"debugwritestdout", norepo=True)
   > def debugwritestdout(ui):
   >     os.write(1, "low-level stdout fd and\n")
   >     sys.stdout.write("stdout should be redirected to /dev/null\n")
   >     sys.stdout.flush()
   > EOF
   $ cat <<EOF >> .hg/hgrc
   > [extensions]
   > dbgui = dbgui.py
   > EOF
 
   >>> from hgclient import check, readchannel, runcommand, stringio
   >>> @check
   ... def getpass(server):
   ...     readchannel(server)
   ...     runcommand(server, ['debuggetpass', '--config',
   ...                         'ui.interactive=True'],
   ...                input=stringio('1234\n'))
   ...     runcommand(server, ['debuggetpass', '--config',
   ...                         'ui.interactive=True'],
   ...                input=stringio('\n'))
   ...     runcommand(server, ['debuggetpass', '--config',
   ...                         'ui.interactive=True'],
   ...                input=stringio(''))
   ...     runcommand(server, ['debugprompt', '--config',
   ...                         'ui.interactive=True'],
   ...                input=stringio('5678\n'))
   ...     runcommand(server, ['debugreadstdin'])
   ...     runcommand(server, ['debugwritestdout'])
   *** runcommand debuggetpass --config ui.interactive=True
   password: 1234
   *** runcommand debuggetpass --config ui.interactive=True
   password: 
   *** runcommand debuggetpass --config ui.interactive=True
   password: abort: response expected
    [255]
   *** runcommand debugprompt --config ui.interactive=True
   prompt: 5678
   *** runcommand debugreadstdin
   read: ''
   *** runcommand debugwritestdout
 
 
 run commandserver in commandserver, which is silly but should work:
 
   >>> from __future__ import print_function
   >>> from hgclient import check, readchannel, runcommand, stringio
   >>> @check
   ... def nested(server):
   ...     print('%c, %r' % readchannel(server))
   ...     class nestedserver(object):
   ...         stdin = stringio('getencoding\n')
   ...         stdout = stringio()
   ...     runcommand(server, ['serve', '--cmdserver', 'pipe'],
   ...                output=nestedserver.stdout, input=nestedserver.stdin)
   ...     nestedserver.stdout.seek(0)
   ...     print('%c, %r' % readchannel(nestedserver))  # hello
   ...     print('%c, %r' % readchannel(nestedserver))  # getencoding
   o, 'capabilities: getencoding runcommand\nencoding: *\npid: *' (glob)
   *** runcommand serve --cmdserver pipe
   o, 'capabilities: getencoding runcommand\nencoding: *\npid: *' (glob)
   r, '*' (glob)
 
 
 start without repository:
 
   $ cd ..
 
   >>> from __future__ import print_function
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def hellomessage(server):
   ...     ch, data = readchannel(server)
   ...     print('%c, %r' % (ch, data))
   ...     # run an arbitrary command to make sure the next thing the server
   ...     # sends isn't part of the hello message
   ...     runcommand(server, ['id'])
   o, 'capabilities: getencoding runcommand\nencoding: *\npid: *' (glob)
   *** runcommand id
   abort: there is no Mercurial repository here (.hg not found)
    [255]
 
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def startwithoutrepo(server):
   ...     readchannel(server)
   ...     runcommand(server, ['init', 'repo2'])
   ...     runcommand(server, ['id', '-R', 'repo2'])
   *** runcommand init repo2
   *** runcommand id -R repo2
   000000000000 tip
 
 
 don't fall back to cwd if invalid -R path is specified (issue4805):
 
   $ cd repo
   $ hg serve --cmdserver pipe -R ../nonexistent
   abort: repository ../nonexistent not found!
   [255]
   $ cd ..
 
 
 unix domain socket:
 
   $ cd repo
   $ hg update -q
 
 #if unix-socket unix-permissions
 
   >>> from __future__ import print_function
   >>> from hgclient import check, readchannel, runcommand, stringio, unixserver
   >>> server = unixserver('.hg/server.sock', '.hg/server.log')
   >>> def hellomessage(conn):
   ...     ch, data = readchannel(conn)
   ...     print('%c, %r' % (ch, data))
   ...     runcommand(conn, ['id'])
   >>> check(hellomessage, server.connect)
   o, 'capabilities: getencoding runcommand\nencoding: *\npid: *' (glob)
   *** runcommand id
   eff892de26ec tip bm1/bm2/bm3
   >>> def unknowncommand(conn):
   ...     readchannel(conn)
   ...     conn.stdin.write('unknowncommand\n')
   >>> check(unknowncommand, server.connect)  # error sent to server.log
   >>> def serverinput(conn):
   ...     readchannel(conn)
   ...     patch = """
   ... # HG changeset patch
   ... # User test
   ... # Date 0 0
   ... 2
   ... 
   ... diff -r eff892de26ec -r 1ed24be7e7a0 a
   ... --- a/a
   ... +++ b/a
   ... @@ -1,1 +1,2 @@
   ...  1
   ... +2
   ... """
   ...     runcommand(conn, ['import', '-'], input=stringio(patch))
   ...     runcommand(conn, ['log', '-rtip', '-q'])
   >>> check(serverinput, server.connect)
   *** runcommand import -
   applying patch from stdin
   *** runcommand log -rtip -q
   2:1ed24be7e7a0
   >>> server.shutdown()
 
   $ cat .hg/server.log
   listening at .hg/server.sock
   abort: unknown command unknowncommand
   killed!
   $ rm .hg/server.log
 
  if server crashed before hello, traceback will be sent to 'e' channel as
  last ditch:
 
   $ cat <<EOF >> .hg/hgrc
   > [cmdserver]
   > log = inexistent/path.log
   > EOF
   >>> from __future__ import print_function
   >>> from hgclient import check, readchannel, unixserver
   >>> server = unixserver('.hg/server.sock', '.hg/server.log')
   >>> def earlycrash(conn):
   ...     while True:
   ...         try:
   ...             ch, data = readchannel(conn)
   ...             if not data.startswith('  '):
   ...                 print('%c, %r' % (ch, data))
   ...         except EOFError:
   ...             break
   >>> check(earlycrash, server.connect)
   e, 'Traceback (most recent call last):\n'
   e, "IOError: *" (glob)
   >>> server.shutdown()
 
   $ cat .hg/server.log | grep -v '^  '
   listening at .hg/server.sock
   Traceback (most recent call last):
   IOError: * (glob)
   killed!
 #endif
 #if no-unix-socket
 
   $ hg serve --cmdserver unix -a .hg/server.sock
   abort: unsupported platform
   [255]
 
 #endif
 
   $ cd ..
 
 Test that accessing to invalid changelog cache is avoided at
 subsequent operations even if repo object is reused even after failure
 of transaction (see 0a7610758c42 also)
 
 "hg log" after failure of transaction is needed to detect invalid
 cache in repoview: this can't detect by "hg verify" only.
 
 Combination of "finalization" and "empty-ness of changelog" (2 x 2 =
 4) are tested, because '00changelog.i' are differently changed in each
 cases.
 
   $ cat > $TESTTMP/failafterfinalize.py <<EOF
   > # extension to abort transaction after finalization forcibly
   > from mercurial import commands, error, extensions, lock as lockmod
   > from mercurial import registrar
   > cmdtable = {}
   > command = registrar.command(cmdtable)
   > configtable = {}
   > configitem = registrar.configitem(configtable)
   > configitem('failafterfinalize', 'fail',
   >     default=None,
   > )
   > def fail(tr):
   >     raise error.Abort('fail after finalization')
   > def reposetup(ui, repo):
   >     class failrepo(repo.__class__):
   >         def commitctx(self, ctx, error=False):
   >             if self.ui.configbool('failafterfinalize', 'fail'):
   >                 # 'sorted()' by ASCII code on category names causes
   >                 # invoking 'fail' after finalization of changelog
   >                 # using "'cl-%i' % id(self)" as category name
   >                 self.currenttransaction().addfinalize('zzzzzzzz', fail)
   >             return super(failrepo, self).commitctx(ctx, error)
   >     repo.__class__ = failrepo
   > EOF
 
   $ hg init repo3
   $ cd repo3
 
   $ cat <<EOF >> $HGRCPATH
   > [ui]
   > logtemplate = {rev} {desc|firstline} ({files})\n
   > 
   > [extensions]
   > failafterfinalize = $TESTTMP/failafterfinalize.py
   > EOF
 
 - test failure with "empty changelog"
 
   $ echo foo > foo
   $ hg add foo
 
 (failure before finalization)
 
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def abort(server):
   ...     readchannel(server)
   ...     runcommand(server, ['commit',
   ...                         '--config', 'hooks.pretxncommit=false',
   ...                         '-mfoo'])
   ...     runcommand(server, ['log'])
   ...     runcommand(server, ['verify', '-q'])
   *** runcommand commit --config hooks.pretxncommit=false -mfoo
   transaction abort!
   rollback completed
   abort: pretxncommit hook exited with status 1
    [255]
   *** runcommand log
   *** runcommand verify -q
 
 (failure after finalization)
 
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def abort(server):
   ...     readchannel(server)
   ...     runcommand(server, ['commit',
   ...                         '--config', 'failafterfinalize.fail=true',
   ...                         '-mfoo'])
   ...     runcommand(server, ['log'])
   ...     runcommand(server, ['verify', '-q'])
   *** runcommand commit --config failafterfinalize.fail=true -mfoo
   transaction abort!
   rollback completed
   abort: fail after finalization
    [255]
   *** runcommand log
   *** runcommand verify -q
 
 - test failure with "not-empty changelog"
 
   $ echo bar > bar
   $ hg add bar
   $ hg commit -mbar bar
 
 (failure before finalization)
 
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def abort(server):
   ...     readchannel(server)
   ...     runcommand(server, ['commit',
   ...                         '--config', 'hooks.pretxncommit=false',
   ...                         '-mfoo', 'foo'])
   ...     runcommand(server, ['log'])
   ...     runcommand(server, ['verify', '-q'])
   *** runcommand commit --config hooks.pretxncommit=false -mfoo foo
   transaction abort!
   rollback completed
   abort: pretxncommit hook exited with status 1
    [255]
   *** runcommand log
   0 bar (bar)
   *** runcommand verify -q
 
 (failure after finalization)
 
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def abort(server):
   ...     readchannel(server)
   ...     runcommand(server, ['commit',
   ...                         '--config', 'failafterfinalize.fail=true',
   ...                         '-mfoo', 'foo'])
   ...     runcommand(server, ['log'])
   ...     runcommand(server, ['verify', '-q'])
   *** runcommand commit --config failafterfinalize.fail=true -mfoo foo
   transaction abort!
   rollback completed
   abort: fail after finalization
    [255]
   *** runcommand log
   0 bar (bar)
   *** runcommand verify -q
 
   $ cd ..
 
 Test symlink traversal over cached audited paths:
 -------------------------------------------------
 
 #if symlink
 
 set up symlink hell
 
   $ mkdir merge-symlink-out
   $ hg init merge-symlink
   $ cd merge-symlink
   $ touch base
   $ hg commit -qAm base
   $ ln -s ../merge-symlink-out a
   $ hg commit -qAm 'symlink a -> ../merge-symlink-out'
   $ hg up -q 0
   $ mkdir a
   $ touch a/poisoned
   $ hg commit -qAm 'file a/poisoned'
   $ hg log -G -T '{rev}: {desc}\n'
   @  2: file a/poisoned
   |
   | o  1: symlink a -> ../merge-symlink-out
   |/
   o  0: base
   
 
 try trivial merge after update: cache of audited paths should be discarded,
 and the merge should fail (issue5628)
 
   $ hg up -q null
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def merge(server):
   ...     readchannel(server)
   ...     # audit a/poisoned as a good path
   ...     runcommand(server, ['up', '-qC', '2'])
   ...     runcommand(server, ['up', '-qC', '1'])
   ...     # here a is a symlink, so a/poisoned is bad
   ...     runcommand(server, ['merge', '2'])
   *** runcommand up -qC 2
   *** runcommand up -qC 1
   *** runcommand merge 2
   abort: path 'a/poisoned' traverses symbolic link 'a'
    [255]
   $ ls ../merge-symlink-out
 
 cache of repo.auditor should be discarded, so matcher would never traverse
 symlinks:
 
   $ hg up -qC 0
   $ touch ../merge-symlink-out/poisoned
   >>> from hgclient import check, readchannel, runcommand
   >>> @check
   ... def files(server):
   ...     readchannel(server)
   ...     runcommand(server, ['up', '-qC', '2'])
   ...     # audit a/poisoned as a good path
   ...     runcommand(server, ['files', 'a/poisoned'])
   ...     runcommand(server, ['up', '-qC', '0'])
   ...     runcommand(server, ['up', '-qC', '1'])
   ...     # here 'a' is a symlink, so a/poisoned should be warned
   ...     runcommand(server, ['files', 'a/poisoned'])
   *** runcommand up -qC 2
   *** runcommand files a/poisoned
   a/poisoned
   *** runcommand up -qC 0
   *** runcommand up -qC 1
   *** runcommand files a/poisoned
   abort: path 'a/poisoned' traverses symbolic link 'a'
    [255]
 
   $ cd ..
 
 #endif