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# - zeroconf support for Mercurial
# Copyright 2005-2007 Matt Mackall <>
# Portions Copyright 2009 Lincoln Stoll <>
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2, incorporated herein by reference.
'''discover and advertise repositorys in git format with bananajour
You can discover bananajour repositories by running "hg paths".
$ hg paths
bjr-repo1 = git://linc.local/repo1.git
This can then be cloned
$ hg clone bjr-repo1
To create a repository on your machine run
$ hg bananajour-add
From your repository directory. You will need to be running bananajour
for this to actually be shared across the network.
Once the repository is added you will need to run "hg push bananajour" to
push an initial copy to the repo. When you want to make subsequent changes
publically available, run the command again.
import Zeroconf, socket, time, os
from mercurial import ui, hg
from mercurial import extensions
from mercurial.hgweb import hgweb_mod
from mercurial.hgweb import hgwebdir_mod
from mercurial.i18n import _
from dulwich.repo import Repo
hg_bananajour_curr_repo = None
hg_bananajour_reponame = None
def getip():
# finds external-facing interface without sending any packets (Linux)
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.connect(('', 0))
ip = s.getsockname()[0]
return ip
# Generic method, sometimes gives useless results
dumbip = socket.gethostbyaddr(socket.gethostname())[2][0]
if not dumbip.startswith('127.') and ':' not in dumbip:
return dumbip
except socket.gaierror:
dumbip = ''
# works elsewhere, but actually sends a packet
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.connect(('', 1))
ip = s.getsockname()[0]
return ip
return dumbip
# listen
class listener(object):
def __init__(self):
self.found = {}
def removeService(self, server, type, name):
if repr(name) in self.found:
del self.found[repr(name)]
def addService(self, server, type, name):
self.found[repr(name)] = server.getServiceInfo(type, name)
def getzcpaths():
ip = getip()
if ip.startswith('127.'):
server = Zeroconf.Zeroconf(ip)
l = listener()
Zeroconf.ServiceBrowser(server, "_git._tcp.local.", l)
# for some reason bananjour is slower here - so we wait for 3 seconds.
# Todo - why does it need to be this long?
for v in l.found.values():
n =['.')]
n.replace(" ", "-")
u = "%s" % ("uri", None))
yield "bjr-" + n, u
def config(orig, self, section, key, default=None, untrusted=False):
# one of the discovered paths
if section == "paths" and key.startswith("bjr-"):
for n, p in getzcpaths():
if n == key:
return p
if bjrepo():
if section == "paths" and key == "bananajour":
# we are currently in a repo, and the path for banajour is
# being requested. so return it.
return bjrepo()
return orig(self, section, key, default, untrusted)
def configitems(orig, self, section, untrusted=False):
r = orig(self, section, untrusted)
if section == "paths":
r += getzcpaths()
# check ~/.bananajour/repositories for a repo with the same name as
# ours. if it is, list that as a path
if bjrepo():
r += [('banajour', bjrepo())]
return r
def bjrepo():
if hg_bananajour_curr_repo:
bjrepo = os.path.expanduser('~/.bananajour/repositories/') + hg_bananajour_reponame + '.git'
if os.path.isdir(bjrepo):
return bjrepo
# try again, this time assume we already have the .git
bjrepo = os.path.expanduser('~/.bananajour/repositories/') + hg_bananajour_reponame
if os.path.isdir(bjrepo):
return bjrepo
def bjadd(ui, repo):
# we need to do whatever it is bananjour add does. i suspect
# it's just a git init. if so, do the same, and print a message
if hg_bananajour_curr_repo:
bj_repo_dir = os.path.expanduser('~/.bananajour/repositories/')
repo_dir = bj_repo_dir + hg_bananajour_reponame + '.git'
if os.path.isdir(repo_dir):
ui.write ("This repository already exists!")
ui.write ("If you want to push to this repository, try hg push bananajour")
ui.write ("Otherwise, delete it before re-creating")
ui.write ("Repository added to bananajour")
ui.write ("Run hg push bananajour to add your commits, and to update!")
ui.write("You need to run this command from within a repository")
extensions.wrapfunction(ui.ui, 'config', config)
extensions.wrapfunction(ui.ui, 'configitems', configitems)
# We need to hook in here to get a repo for later.
def reposetup(ui, repo):
global hg_bananajour_curr_repo, hg_bananajour_reponame
if hasattr(repo, 'root'):
hg_bananajour_curr_repo = repo
hg_bananajour_reponame = os.path.basename(repo.root)
cmdtable = {
(bjadd, [], _('hg bananajour-add')),