# httprepo.py - HTTP repository proxy classes for mercurial
#
# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
from node import bin, hex, nullid
from i18n import _
import repo, os, urllib, urllib2, urlparse, zlib, util, httplib
import errno, socket, changegroup, statichttprepo, error, url
def zgenerator(f):
zd = zlib.decompressobj()
try:
for chunk in util.filechunkiter(f):
yield zd.decompress(chunk)
except httplib.HTTPException:
raise IOError(None, _('connection ended unexpectedly'))
yield zd.flush()
class httprepository(repo.repository):
def __init__(self, ui, path):
self.path = path
self.caps = None
self.handler = None
scheme, netloc, urlpath, query, frag = urlparse.urlsplit(path)
if query or frag:
raise util.Abort(_('unsupported URL component: "%s"') %
(query or frag))
# urllib cannot handle URLs with embedded user or passwd
self._url, authinfo = url.getauthinfo(path)
self.ui = ui
self.ui.debug(_('using %s\n') % self._url)
self.urlopener = url.opener(ui, authinfo)
def __del__(self):
for h in self.urlopener.handlers:
h.close()
if hasattr(h, "close_all"):
h.close_all()
def url(self):
return self.path
# look up capabilities only when needed
def get_caps(self):
if self.caps is None:
try:
self.caps = set(self.do_read('capabilities').split())
except error.RepoError:
self.caps = set()
self.ui.debug(_('capabilities: %s\n') %
(' '.join(self.caps or ['none'])))
return self.caps
capabilities = property(get_caps)
def lock(self):
raise util.Abort(_('operation not supported over http'))
def do_cmd(self, cmd, **args):
data = args.pop('data', None)
headers = args.pop('headers', {})
self.ui.debug(_("sending %s command\n") % cmd)
q = {"cmd": cmd}
q.update(args)
qs = '?%s' % urllib.urlencode(q)
cu = "%s%s" % (self._url, qs)
try:
if data:
self.ui.debug(_("sending %s bytes\n") % len(data))
resp = self.urlopener.open(urllib2.Request(cu, data, headers))
except urllib2.HTTPError, inst:
if inst.code == 401:
raise util.Abort(_('authorization failed'))
raise
except httplib.HTTPException, inst:
self.ui.debug(_('http error while sending %s command\n') % cmd)
self.ui.print_exc()
raise IOError(None, inst)
except IndexError:
# this only happens with Python 2.3, later versions raise URLError
raise util.Abort(_('http error, possibly caused by proxy setting'))
# record the url we got redirected to
resp_url = resp.geturl()
if resp_url.endswith(qs):
resp_url = resp_url[:-len(qs)]
if self._url != resp_url:
self.ui.status(_('real URL is %s\n') % resp_url)
self._url = resp_url
try:
proto = resp.getheader('content-type')
except AttributeError:
proto = resp.headers['content-type']
safeurl = url.hidepassword(self._url)
# accept old "text/plain" and "application/hg-changegroup" for now
if not (proto.startswith('application/mercurial-') or
proto.startswith('text/plain') or
proto.startswith('application/hg-changegroup')):
self.ui.debug(_("requested URL: '%s'\n") % url.hidepassword(cu))
raise error.RepoError(_("'%s' does not appear to be an hg repository")
% safeurl)
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))
if version_info > (0, 1):
raise error.RepoError(_("'%s' uses newer protocol %s") %
(safeurl, version))
return resp
def do_read(self, cmd, **args):
fp = self.do_cmd(cmd, **args)
try:
return fp.read()
finally:
# if using keepalive, allow connection to be reused
fp.close()
def lookup(self, key):
self.requirecap('lookup', _('look up remote revision'))
d = self.do_cmd("lookup", key = key).read()
success, data = d[:-1].split(' ', 1)
if int(success):
return bin(data)
raise error.RepoError(data)
def heads(self):
d = self.do_read("heads")
try:
return map(bin, d[:-1].split(" "))
except:
raise error.ResponseError(_("unexpected response:"), d)
def branches(self, nodes):
n = " ".join(map(hex, nodes))
d = self.do_read("branches", nodes=n)
try:
br = [ tuple(map(bin, b.split(" "))) for b in d.splitlines() ]
return br
except:
raise error.ResponseError(_("unexpected response:"), d)
def between(self, pairs):
batch = 8 # avoid giant requests
r = []
for i in xrange(0, len(pairs), batch):
n = " ".join(["-".join(map(hex, p)) for p in pairs[i:i + batch]])
d = self.do_read("between", pairs=n)
try:
r += [ l and map(bin, l.split(" ")) or [] for l in d.splitlines() ]
except:
raise error.ResponseError(_("unexpected response:"), d)
return r
def changegroup(self, nodes, kind):
n = " ".join(map(hex, nodes))
f = self.do_cmd("changegroup", roots=n)
return util.chunkbuffer(zgenerator(f))
def changegroupsubset(self, bases, heads, source):
self.requirecap('changegroupsubset', _('look up remote changes'))
baselst = " ".join([hex(n) for n in bases])
headlst = " ".join([hex(n) for n in heads])
f = self.do_cmd("changegroupsubset", bases=baselst, heads=headlst)
return util.chunkbuffer(zgenerator(f))
def unbundle(self, cg, heads, source):
# have to stream bundle to a temp file because we do not have
# http 1.1 chunked transfer.
type = ""
types = self.capable('unbundle')
# servers older than d1b16a746db6 will send 'unbundle' as a
# boolean capability
try:
types = types.split(',')
except AttributeError:
types = [""]
if types:
for x in types:
if x in changegroup.bundletypes:
type = x
break
tempname = changegroup.writebundle(cg, None, type)
fp = url.httpsendfile(tempname, "rb")
try:
try:
resp = self.do_read(
'unbundle', data=fp,
headers={'Content-Type': 'application/octet-stream'},
heads=' '.join(map(hex, heads)))
resp_code, output = resp.split('\n', 1)
try:
ret = int(resp_code)
except ValueError, err:
raise error.ResponseError(
_('push failed (unexpected response):'), resp)
self.ui.write(output)
return ret
except socket.error, err:
if err[0] in (errno.ECONNRESET, errno.EPIPE):
raise util.Abort(_('push failed: %s') % err[1])
raise util.Abort(err[1])
finally:
fp.close()
os.unlink(tempname)
def stream_out(self):
return self.do_cmd('stream_out')
class httpsrepository(httprepository):
def __init__(self, ui, path):
if not url.has_https:
raise util.Abort(_('Python support for SSL and HTTPS '
'is not installed'))
httprepository.__init__(self, ui, path)
def instance(ui, path, create):
if create:
raise util.Abort(_('cannot create new http repository'))
try:
if path.startswith('https:'):
inst = httpsrepository(ui, path)
else:
inst = httprepository(ui, path)
inst.between([(nullid, nullid)])
return inst
except error.RepoError:
ui.note('(falling back to static-http)\n')
return statichttprepo.instance(ui, "static-" + path, create)