# hgweb/hgweb_mod.py - Web interface for a repository.
#
# 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, incorporated herein by reference.
import os, mimetypes
from mercurial.node import hex, nullid
from mercurial.repo import RepoError
from mercurial import ui, hg, util, hook
from mercurial import revlog, templater, templatefilters
from common import get_mtime, style_map, ErrorResponse
from common import HTTP_OK, HTTP_BAD_REQUEST, HTTP_NOT_FOUND, HTTP_SERVER_ERROR
from common import HTTP_UNAUTHORIZED, HTTP_METHOD_NOT_ALLOWED
from request import wsgirequest
import webcommands, protocol, webutil
perms = {
'changegroup': 'pull',
'changegroupsubset': 'pull',
'unbundle': 'push',
'stream_out': 'pull',
}
class hgweb(object):
def __init__(self, repo, name=None):
if isinstance(repo, str):
parentui = ui.ui(report_untrusted=False, interactive=False)
self.repo = hg.repository(parentui, repo)
else:
self.repo = repo
hook.redirect(True)
self.mtime = -1
self.reponame = name
self.archives = 'zip', 'gz', 'bz2'
self.stripecount = 1
# a repo owner may set web.templates in .hg/hgrc to get any file
# readable by the user running the CGI script
self.templatepath = self.config("web", "templates",
templater.templatepath(),
untrusted=False)
# The CGI scripts are often run by a user different from the repo owner.
# Trust the settings from the .hg/hgrc files by default.
def config(self, section, name, default=None, untrusted=True):
return self.repo.ui.config(section, name, default,
untrusted=untrusted)
def configbool(self, section, name, default=False, untrusted=True):
return self.repo.ui.configbool(section, name, default,
untrusted=untrusted)
def configlist(self, section, name, default=None, untrusted=True):
return self.repo.ui.configlist(section, name, default,
untrusted=untrusted)
def refresh(self):
mtime = get_mtime(self.repo.root)
if mtime != self.mtime:
self.mtime = mtime
self.repo = hg.repository(self.repo.ui, self.repo.root)
self.maxchanges = int(self.config("web", "maxchanges", 10))
self.stripecount = int(self.config("web", "stripes", 1))
self.maxshortchanges = int(self.config("web", "maxshortchanges", 60))
self.maxfiles = int(self.config("web", "maxfiles", 10))
self.allowpull = self.configbool("web", "allowpull", True)
self.encoding = self.config("web", "encoding", util._encoding)
def run(self):
if not os.environ.get('GATEWAY_INTERFACE', '').startswith("CGI/1."):
raise RuntimeError("This function is only intended to be called while running as a CGI script.")
import mercurial.hgweb.wsgicgi as wsgicgi
wsgicgi.launch(self)
def __call__(self, env, respond):
req = wsgirequest(env, respond)
return self.run_wsgi(req)
def run_wsgi(self, req):
self.refresh()
# process this if it's a protocol request
# protocol bits don't need to create any URLs
# and the clients always use the old URL structure
cmd = req.form.get('cmd', [''])[0]
if cmd and cmd in protocol.__all__:
try:
if cmd in perms:
try:
self.check_perm(req, perms[cmd])
except ErrorResponse, inst:
if cmd == 'unbundle':
req.drain()
raise
method = getattr(protocol, cmd)
return method(self.repo, req)
except ErrorResponse, inst:
req.respond(inst.code, protocol.HGTYPE)
if not inst.message:
return []
return '0\n%s\n' % inst.message,
# work with CGI variables to create coherent structure
# use SCRIPT_NAME, PATH_INFO and QUERY_STRING as well as our REPO_NAME
req.url = req.env['SCRIPT_NAME']
if not req.url.endswith('/'):
req.url += '/'
if 'REPO_NAME' in req.env:
req.url += req.env['REPO_NAME'] + '/'
if 'PATH_INFO' in req.env:
parts = req.env['PATH_INFO'].strip('/').split('/')
repo_parts = req.env.get('REPO_NAME', '').split('/')
if parts[:len(repo_parts)] == repo_parts:
parts = parts[len(repo_parts):]
query = '/'.join(parts)
else:
query = req.env['QUERY_STRING'].split('&', 1)[0]
query = query.split(';', 1)[0]
# translate user-visible url structure to internal structure
args = query.split('/', 2)
if 'cmd' not in req.form and args and args[0]:
cmd = args.pop(0)
style = cmd.rfind('-')
if style != -1:
req.form['style'] = [cmd[:style]]
cmd = cmd[style+1:]
# avoid accepting e.g. style parameter as command
if hasattr(webcommands, cmd):
req.form['cmd'] = [cmd]
else:
cmd = ''
if cmd == 'static':
req.form['file'] = ['/'.join(args)]
else:
if args and args[0]:
node = args.pop(0)
req.form['node'] = [node]
if args:
req.form['file'] = args
if cmd == 'archive':
fn = req.form['node'][0]
for type_, spec in self.archive_specs.iteritems():
ext = spec[2]
if fn.endswith(ext):
req.form['node'] = [fn[:-len(ext)]]
req.form['type'] = [type_]
# process the web interface request
try:
tmpl = self.templater(req)
ctype = tmpl('mimetype', encoding=self.encoding)
ctype = templater.stringify(ctype)
# check read permissions non-static content
if cmd != 'static':
self.check_perm(req, None)
if cmd == '':
req.form['cmd'] = [tmpl.cache['default']]
cmd = req.form['cmd'][0]
if cmd not in webcommands.__all__:
msg = 'no such method: %s' % cmd
raise ErrorResponse(HTTP_BAD_REQUEST, msg)
elif cmd == 'file' and 'raw' in req.form.get('style', []):
self.ctype = ctype
content = webcommands.rawfile(self, req, tmpl)
else:
content = getattr(webcommands, cmd)(self, req, tmpl)
req.respond(HTTP_OK, ctype)
return content
except revlog.LookupError, err:
req.respond(HTTP_NOT_FOUND, ctype)
msg = str(err)
if 'manifest' not in msg:
msg = 'revision not found: %s' % err.name
return tmpl('error', error=msg)
except (RepoError, revlog.RevlogError), inst:
req.respond(HTTP_SERVER_ERROR, ctype)
return tmpl('error', error=str(inst))
except ErrorResponse, inst:
req.respond(inst.code, ctype)
return tmpl('error', error=inst.message)
def templater(self, req):
# determine scheme, port and server name
# this is needed to create absolute urls
proto = req.env.get('wsgi.url_scheme')
if proto == 'https':
proto = 'https'
default_port = "443"
else:
proto = 'http'
default_port = "80"
port = req.env["SERVER_PORT"]
port = port != default_port and (":" + port) or ""
urlbase = '%s://%s%s' % (proto, req.env['SERVER_NAME'], port)
staticurl = self.config("web", "staticurl") or req.url + 'static/'
if not staticurl.endswith('/'):
staticurl += '/'
# some functions for the templater
def header(**map):
yield tmpl('header', encoding=self.encoding, **map)
def footer(**map):
yield tmpl("footer", **map)
def motd(**map):
yield self.config("web", "motd", "")
# figure out which style to use
vars = {}
style = self.config("web", "style", "paper")
if 'style' in req.form:
style = req.form['style'][0]
vars['style'] = style
start = req.url[-1] == '?' and '&' or '?'
sessionvars = webutil.sessionvars(vars, start)
mapfile = style_map(self.templatepath, style)
if not self.reponame:
self.reponame = (self.config("web", "name")
or req.env.get('REPO_NAME')
or req.url.strip('/') or self.repo.root)
# create the templater
tmpl = templater.templater(mapfile, templatefilters.filters,
defaults={"url": req.url,
"staticurl": staticurl,
"urlbase": urlbase,
"repo": self.reponame,
"header": header,
"footer": footer,
"motd": motd,
"sessionvars": sessionvars
})
return tmpl
def archivelist(self, nodeid):
allowed = self.configlist("web", "allow_archive")
for i, spec in self.archive_specs.iteritems():
if i in allowed or self.configbool("web", "allow" + i):
yield {"type" : i, "extension" : spec[2], "node" : nodeid}
archive_specs = {
'bz2': ('application/x-tar', 'tbz2', '.tar.bz2', None),
'gz': ('application/x-tar', 'tgz', '.tar.gz', None),
'zip': ('application/zip', 'zip', '.zip', None),
}
def check_perm(self, req, op):
'''Check permission for operation based on request data (including
authentication info). Return if op allowed, else raise an ErrorResponse
exception.'''
user = req.env.get('REMOTE_USER')
deny_read = self.configlist('web', 'deny_read')
if deny_read and (not user or deny_read == ['*'] or user in deny_read):
raise ErrorResponse(HTTP_UNAUTHORIZED, 'read not authorized')
allow_read = self.configlist('web', 'allow_read')
result = (not allow_read) or (allow_read == ['*']) or (user in allow_read)
if not result:
raise ErrorResponse(HTTP_UNAUTHORIZED, 'read not authorized')
if op == 'pull' and not self.allowpull:
raise ErrorResponse(HTTP_OK, '')
# op is None when checking allow/deny_read permissions for a web-browser request
elif op == 'pull' or op is None:
return
# enforce that you can only push using POST requests
if req.env['REQUEST_METHOD'] != 'POST':
msg = 'push requires POST request'
raise ErrorResponse(HTTP_METHOD_NOT_ALLOWED, msg)
# require ssl by default for pushing, auth info cannot be sniffed
# and replayed
scheme = req.env.get('wsgi.url_scheme')
if self.configbool('web', 'push_ssl', True) and scheme != 'https':
raise ErrorResponse(HTTP_OK, 'ssl required')
deny = self.configlist('web', 'deny_push')
if deny and (not user or deny == ['*'] or user in deny):
raise ErrorResponse(HTTP_UNAUTHORIZED, 'push not authorized')
allow = self.configlist('web', 'allow_push')
result = allow and (allow == ['*'] or user in allow)
if not result:
raise ErrorResponse(HTTP_UNAUTHORIZED, 'push not authorized')