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# sshrepo.py - ssh repository proxy class for mercurial
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#
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# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2, incorporated herein by reference.
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from node import bin, hex
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from i18n import _
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import repo, util, error, encoding
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import re, urllib
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class remotelock(object):
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def __init__(self, repo):
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self.repo = repo
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def release(self):
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self.repo.unlock()
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self.repo = None
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def __del__(self):
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if self.repo:
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self.release()
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class sshrepository(repo.repository):
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def __init__(self, ui, path, create=0):
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self._url = path
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self.ui = ui
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m = re.match(r'^ssh://(([^@]+)@)?([^:/]+)(:(\d+))?(/(.*))?$', path)
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if not m:
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self.abort(error.RepoError(_("couldn't parse location %s") % path))
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self.user = m.group(2)
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self.host = m.group(3)
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self.port = m.group(5)
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self.path = m.group(7) or "."
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sshcmd = self.ui.config("ui", "ssh", "ssh")
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remotecmd = self.ui.config("ui", "remotecmd", "hg")
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args = util.sshargs(sshcmd, self.host, self.user, self.port)
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if create:
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cmd = '%s %s "%s init %s"'
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cmd = cmd % (sshcmd, args, remotecmd, self.path)
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ui.note(_('running %s\n') % cmd)
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res = util.system(cmd)
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if res != 0:
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self.abort(error.RepoError(_("could not create remote repo")))
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self.validate_repo(ui, sshcmd, args, remotecmd)
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def url(self):
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return self._url
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def validate_repo(self, ui, sshcmd, args, remotecmd):
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# cleanup up previous run
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self.cleanup()
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cmd = '%s %s "%s -R %s serve --stdio"'
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cmd = cmd % (sshcmd, args, remotecmd, self.path)
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cmd = util.quotecommand(cmd)
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ui.note(_('running %s\n') % cmd)
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self.pipeo, self.pipei, self.pipee = util.popen3(cmd)
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# skip any noise generated by remote shell
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self.do_cmd("hello")
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r = self.do_cmd("between", pairs=("%s-%s" % ("0"*40, "0"*40)))
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lines = ["", "dummy"]
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max_noise = 500
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while lines[-1] and max_noise:
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l = r.readline()
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self.readerr()
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if lines[-1] == "1\n" and l == "\n":
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break
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if l:
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ui.debug("remote: ", l)
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lines.append(l)
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max_noise -= 1
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else:
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self.abort(error.RepoError(_("no suitable response from remote hg")))
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self.capabilities = set()
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for l in reversed(lines):
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if l.startswith("capabilities:"):
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self.capabilities.update(l[:-1].split(":")[1].split())
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break
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def readerr(self):
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while 1:
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size = util.fstat(self.pipee).st_size
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if size == 0: break
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l = self.pipee.readline()
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if not l: break
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self.ui.status(_("remote: "), l)
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def abort(self, exception):
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self.cleanup()
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raise exception
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def cleanup(self):
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try:
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self.pipeo.close()
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self.pipei.close()
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# read the error descriptor until EOF
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for l in self.pipee:
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self.ui.status(_("remote: "), l)
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self.pipee.close()
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except:
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pass
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__del__ = cleanup
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def do_cmd(self, cmd, **args):
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self.ui.debug("sending %s command\n" % cmd)
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self.pipeo.write("%s\n" % cmd)
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for k, v in args.iteritems():
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self.pipeo.write("%s %d\n" % (k, len(v)))
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self.pipeo.write(v)
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self.pipeo.flush()
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return self.pipei
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def call(self, cmd, **args):
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self.do_cmd(cmd, **args)
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return self._recv()
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def _recv(self):
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l = self.pipei.readline()
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self.readerr()
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try:
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l = int(l)
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except:
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self.abort(error.ResponseError(_("unexpected response:"), l))
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return self.pipei.read(l)
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def _send(self, data, flush=False):
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self.pipeo.write("%d\n" % len(data))
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if data:
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self.pipeo.write(data)
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if flush:
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self.pipeo.flush()
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self.readerr()
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def lock(self):
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self.call("lock")
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return remotelock(self)
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def unlock(self):
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self.call("unlock")
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def lookup(self, key):
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self.requirecap('lookup', _('look up remote revision'))
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d = self.call("lookup", key=key)
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success, data = d[:-1].split(" ", 1)
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if int(success):
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return bin(data)
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else:
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self.abort(error.RepoError(data))
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def heads(self):
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d = self.call("heads")
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try:
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return map(bin, d[:-1].split(" "))
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except:
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self.abort(error.ResponseError(_("unexpected response:"), d))
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def branchmap(self):
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d = self.call("branchmap")
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try:
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branchmap = {}
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for branchpart in d.splitlines():
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branchheads = branchpart.split(' ')
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branchname = urllib.unquote(branchheads[0])
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# Earlier servers (1.3.x) send branch names in (their) local
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# charset. The best we can do is assume it's identical to our
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# own local charset, in case it's not utf-8.
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try:
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branchname.decode('utf-8')
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except UnicodeDecodeError:
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branchname = encoding.fromlocal(branchname)
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branchheads = [bin(x) for x in branchheads[1:]]
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branchmap[branchname] = branchheads
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return branchmap
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except:
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raise error.ResponseError(_("unexpected response:"), d)
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def branches(self, nodes):
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n = " ".join(map(hex, nodes))
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d = self.call("branches", nodes=n)
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try:
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br = [ tuple(map(bin, b.split(" "))) for b in d.splitlines() ]
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return br
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except:
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self.abort(error.ResponseError(_("unexpected response:"), d))
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def between(self, pairs):
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n = " ".join(["-".join(map(hex, p)) for p in pairs])
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d = self.call("between", pairs=n)
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try:
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p = [ l and map(bin, l.split(" ")) or [] for l in d.splitlines() ]
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return p
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except:
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self.abort(error.ResponseError(_("unexpected response:"), d))
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def changegroup(self, nodes, kind):
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n = " ".join(map(hex, nodes))
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return self.do_cmd("changegroup", roots=n)
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def changegroupsubset(self, bases, heads, kind):
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self.requirecap('changegroupsubset', _('look up remote changes'))
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bases = " ".join(map(hex, bases))
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heads = " ".join(map(hex, heads))
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return self.do_cmd("changegroupsubset", bases=bases, heads=heads)
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def unbundle(self, cg, heads, source):
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d = self.call("unbundle", heads=' '.join(map(hex, heads)))
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if d:
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# remote may send "unsynced changes"
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self.abort(error.RepoError(_("push refused: %s") % d))
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while 1:
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d = cg.read(4096)
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if not d:
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break
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self._send(d)
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self._send("", flush=True)
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r = self._recv()
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if r:
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# remote may send "unsynced changes"
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self.abort(error.RepoError(_("push failed: %s") % r))
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r = self._recv()
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try:
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return int(r)
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except:
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self.abort(error.ResponseError(_("unexpected response:"), r))
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def addchangegroup(self, cg, source, url):
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d = self.call("addchangegroup")
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if d:
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self.abort(error.RepoError(_("push refused: %s") % d))
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while 1:
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d = cg.read(4096)
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if not d:
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break
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self.pipeo.write(d)
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self.readerr()
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self.pipeo.flush()
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self.readerr()
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r = self._recv()
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if not r:
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return 1
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try:
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return int(r)
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except:
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self.abort(error.ResponseError(_("unexpected response:"), r))
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def stream_out(self):
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return self.do_cmd('stream_out')
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instance = sshrepository
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