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# Authors:
# Jason Gerard DeRose <jderose@redhat.com>
#
# Copyright (C) 2008 Red Hat
# see file 'COPYING' for use and warranty information
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; version 2 only
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
Package containing server backend.
"""
import traceback
from xmlrpclib import dumps, Fault
from ipalib import api
# This is a simple way to ensure that ipalib.api is only initialized
# when ipaserver is imported from within the Apache process:
try:
from mod_python import apache
api.bootstrap(context='server', debug=True, log=None)
api.finalize()
api.log.info('*** PROCESS START ***')
import ipawebui
ui = ipawebui.create_wsgi_app(api)
except ImportError:
pass
# START code from paste
# Red Hat does not hold the copyright to the following code. The following code
# is from paste:
# http://pythonpaste.org/
# Which in turn was based on Robert Brewer's modpython_gateway:
# http://projects.amor.org/misc/svn/modpython_gateway.py
class InputWrapper(object):
def __init__(self, req):
self.req = req
def close(self):
pass
def read(self, size=-1):
return self.req.read(size)
def readline(self, size=-1):
return self.req.readline(size)
def readlines(self, hint=-1):
return self.req.readlines(hint)
def __iter__(self):
line = self.readline()
while line:
yield line
# Notice this won't prefetch the next line; it only
# gets called if the generator is resumed.
line = self.readline()
class ErrorWrapper(object):
def __init__(self, req):
self.req = req
def flush(self):
pass
def write(self, msg):
self.req.log_error(msg)
def writelines(self, seq):
self.write(''.join(seq))
bad_value = ("You must provide a PythonOption '%s', either 'on' or 'off', "
"when running a version of mod_python < 3.1")
class Handler(object):
def __init__(self, req):
self.started = False
options = req.get_options()
# Threading and forking
try:
q = apache.mpm_query
threaded = q(apache.AP_MPMQ_IS_THREADED)
forked = q(apache.AP_MPMQ_IS_FORKED)
except AttributeError:
threaded = options.get('multithread', '').lower()
if threaded == 'on':
threaded = True
elif threaded == 'off':
threaded = False
else:
raise ValueError(bad_value % "multithread")
forked = options.get('multiprocess', '').lower()
if forked == 'on':
forked = True
elif forked == 'off':
forked = False
else:
raise ValueError(bad_value % "multiprocess")
env = self.environ = dict(apache.build_cgi_env(req))
if 'SCRIPT_NAME' in options:
# Override SCRIPT_NAME and PATH_INFO if requested.
env['SCRIPT_NAME'] = options['SCRIPT_NAME']
env['PATH_INFO'] = req.uri[len(options['SCRIPT_NAME']):]
else:
env['SCRIPT_NAME'] = ''
env['PATH_INFO'] = req.uri
env['wsgi.input'] = InputWrapper(req)
env['wsgi.errors'] = ErrorWrapper(req)
env['wsgi.version'] = (1, 0)
env['wsgi.run_once'] = False
if env.get("HTTPS") in ('yes', 'on', '1'):
env['wsgi.url_scheme'] = 'https'
else:
env['wsgi.url_scheme'] = 'http'
env['wsgi.multithread'] = threaded
env['wsgi.multiprocess'] = forked
self.request = req
def run(self, application):
try:
result = application(self.environ, self.start_response)
for data in result:
self.write(data)
if not self.started:
self.request.set_content_length(0)
if hasattr(result, 'close'):
result.close()
except:
traceback.print_exc(None, self.environ['wsgi.errors'])
if not self.started:
self.request.status = 500
self.request.content_type = 'text/plain'
data = "A server error occurred. Please contact the administrator."
self.request.set_content_length(len(data))
self.request.write(data)
def start_response(self, status, headers, exc_info=None):
if exc_info:
try:
if self.started:
raise exc_info[0], exc_info[1], exc_info[2]
finally:
exc_info = None
self.request.status = int(status[:3])
for key, val in headers:
if key.lower() == 'content-length':
self.request.set_content_length(int(val))
elif key.lower() == 'content-type':
self.request.content_type = val
else:
self.request.headers_out.add(key, val)
return self.write
def write(self, data):
if not self.started:
self.started = True
self.request.write(data)
# END code from paste
def adapter(req, app):
if apache.mpm_query(apache.AP_MPMQ_IS_THREADED):
response = dumps(
Fault(3, 'Apache must use the forked model'),
methodresponse=True,
)
req.content_type = 'text/xml'
req.set_content_length(len(response))
req.write(response)
else:
Handler(req).run(app)
return apache.OK
def xmlrpc(req):
"""
mod_python handler for XML-RPC requests.
"""
return adapter(req, api.Backend.xmlserver)
def jsonrpc(req):
"""
mod_python handler for JSON-RPC requests (place holder).
"""
return adapter(req, api.Backend.jsonserver)
def webui(req):
"""
mod_python handler for web-UI requests (place holder).
"""
return adapter(req, ui)
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