## Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net># Copyright 2005-2007 Matt Mackall <mpm@selenic.com>## This software may be used and distributed according to the terms of the# GNU General Public License version 2, incorporated herein by reference. import cStringIO, zlib, tempfile, errno, os, sys, urllibfrom mercurial import util, streamclonefrom mercurial.node import bin, hexfrom mercurial import changegroup as changegroupmodfrom common import ErrorResponse, HTTP_OK, HTTP_NOT_FOUND, HTTP_SERVER_ERROR # __all__ is populated with the allowed commands. Be sure to add to it if# you're adding a new command, or the new command won't work. __all__ = [   'lookup', 'heads', 'branches', 'between', 'changegroup',   'changegroupsubset', 'capabilities', 'unbundle', 'stream_out',   'branchmap',] HGTYPE = 'application/mercurial-0.1' def lookup(repo, req):    try:        r = hex(repo.lookup(req.form['key'][0]))        success = 1    except Exception, inst:        r = str(inst)        success = 0    resp = "%s %s\n" % (success, r)    req.respond(HTTP_OK, HGTYPE, length=len(resp))    yield resp def heads(repo, req):    resp = " ".join(map(hex, repo.heads())) + "\n"    req.respond(HTTP_OK, HGTYPE, length=len(resp))    yield resp def branchmap(repo, req):    branches = repo.branchmap()    heads = []    for branch, nodes in branches.iteritems():        branchname = urllib.quote(branch)        branchnodes = [hex(node) for node in nodes]        heads.append('%s %s' % (branchname, ' '.join(branchnodes)))    resp = '\n'.join(heads)    req.respond(HTTP_OK, HGTYPE, length=len(resp))    yield resp def branches(repo, req):    nodes = []    if 'nodes' in req.form:        nodes = map(bin, req.form['nodes'][0].split(" "))    resp = cStringIO.StringIO()    for b in repo.branches(nodes):        resp.write(" ".join(map(hex, b)) + "\n")    resp = resp.getvalue()    req.respond(HTTP_OK, HGTYPE, length=len(resp))    yield resp def between(repo, req):    if 'pairs' in req.form:        pairs = [map(bin, p.split("-"))                 for p in req.form['pairs'][0].split(" ")]    resp = cStringIO.StringIO()    for b in repo.between(pairs):        resp.write(" ".join(map(hex, b)) + "\n")    resp = resp.getvalue()    req.respond(HTTP_OK, HGTYPE, length=len(resp))    yield resp def changegroup(repo, req):    req.respond(HTTP_OK, HGTYPE)    nodes = []     if 'roots' in req.form:        nodes = map(bin, req.form['roots'][0].split(" "))     z = zlib.compressobj()    f = repo.changegroup(nodes, 'serve')    while 1:        chunk = f.read(4096)        if not chunk:            break        yield z.compress(chunk)     yield z.flush() def changegroupsubset(repo, req):    req.respond(HTTP_OK, HGTYPE)    bases = []    heads = []     if 'bases' in req.form:        bases = [bin(x) for x in req.form['bases'][0].split(' ')]    if 'heads' in req.form:        heads = [bin(x) for x in req.form['heads'][0].split(' ')]     z = zlib.compressobj()    f = repo.changegroupsubset(bases, heads, 'serve')    while 1:        chunk = f.read(4096)        if not chunk:            break        yield z.compress(chunk)     yield z.flush() def capabilities(repo, req):    caps = ['lookup', 'changegroupsubset', 'branchmap']    if repo.ui.configbool('server', 'uncompressed', untrusted=True):        caps.append('stream=%d' % repo.changelog.version)    if changegroupmod.bundlepriority:        caps.append('unbundle=%s' % ','.join(changegroupmod.bundlepriority))    rsp = ' '.join(caps)    req.respond(HTTP_OK, HGTYPE, length=len(rsp))    yield rsp def unbundle(repo, req):     proto = req.env.get('wsgi.url_scheme') or 'http'    their_heads = req.form['heads'][0].split(' ')     def check_heads():        heads = map(hex, repo.heads())        return their_heads == [hex('force')] or their_heads == heads     # fail early if possible    if not check_heads():        req.drain()        raise ErrorResponse(HTTP_OK, 'unsynced changes')     # do not lock repo until all changegroup data is    # streamed. save to temporary file.     fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-')    fp = os.fdopen(fd, 'wb+')    try:        length = int(req.env['CONTENT_LENGTH'])        for s in util.filechunkiter(req, limit=length):            fp.write(s)         try:            lock = repo.lock()            try:                if not check_heads():                    raise ErrorResponse(HTTP_OK, 'unsynced changes')                 fp.seek(0)                header = fp.read(6)                if header.startswith('HG') and not header.startswith('HG10'):                    raise ValueError('unknown bundle version')                elif header not in changegroupmod.bundletypes:                    raise ValueError('unknown bundle compression type')                gen = changegroupmod.unbundle(header, fp)                 # send addchangegroup output to client                 oldio = sys.stdout, sys.stderr                sys.stderr = sys.stdout = cStringIO.StringIO()                 try:                    url = 'remote:%s:%s:%s' % (                          proto,                          urllib.quote(req.env.get('REMOTE_HOST', '')),                          urllib.quote(req.env.get('REMOTE_USER', '')))                    try:                        ret = repo.addchangegroup(gen, 'serve', url)                    except util.Abort, inst:                        sys.stdout.write("abort: %s\n" % inst)                        ret = 0                finally:                    val = sys.stdout.getvalue()                    sys.stdout, sys.stderr = oldio                req.respond(HTTP_OK, HGTYPE)                return '%d\n%s' % (ret, val),            finally:                lock.release()        except ValueError, inst:            raise ErrorResponse(HTTP_OK, inst)        except (OSError, IOError), inst:            filename = getattr(inst, 'filename', '')            # Don't send our filesystem layout to the client            if filename.startswith(repo.root):                filename = filename[len(repo.root)+1:]            else:                filename = ''            error = getattr(inst, 'strerror', 'Unknown error')            if inst.errno == errno.ENOENT:                code = HTTP_NOT_FOUND            else:                code = HTTP_SERVER_ERROR            raise ErrorResponse(code, '%s: %s' % (error, filename))    finally:        fp.close()        os.unlink(tempname) def stream_out(repo, req):    req.respond(HTTP_OK, HGTYPE)    try:        for chunk in streamclone.stream_out(repo, untrusted=True):            yield chunk    except streamclone.StreamException, inst:        yield str(inst)