1 # -*- coding: utf-8 -*-
2 ##############################################################################
4 # OpenERP, Open Source Management Solution
5 # Copyright (C) 2011-2012 OpenERP s.a. (<http://openerp.com>).
7 # This program is free software: you can redistribute it and/or modify
8 # it under the terms of the GNU Affero General Public License as
9 # published by the Free Software Foundation, either version 3 of the
10 # License, or (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU Affero General Public License for more details.
17 # You should have received a copy of the GNU Affero General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 ##############################################################################
24 WSGI stack, common code.
41 import werkzeug.serving
42 import werkzeug.contrib.fixers
45 import openerp.tools.config as config
48 _logger = logging.getLogger(__name__)
50 # XML-RPC fault codes. Some care must be taken when changing these: the
51 # constants are also defined client-side and must remain in sync.
52 # User code must use the exceptions defined in ``openerp.exceptions`` (not
53 # create directly ``xmlrpclib.Fault`` objects).
54 RPC_FAULT_CODE_CLIENT_ERROR = 1 # indistinguishable from app. error.
55 RPC_FAULT_CODE_APPLICATION_ERROR = 1
56 RPC_FAULT_CODE_WARNING = 2
57 RPC_FAULT_CODE_ACCESS_DENIED = 3
58 RPC_FAULT_CODE_ACCESS_ERROR = 4
60 def xmlrpc_return(start_response, service, method, params, string_faultcode=False):
62 Helper to call a service's method with some params, using a wsgi-supplied
63 ``start_response`` callback.
65 This is the place to look at to see the mapping between core exceptions
66 and XML-RPC fault codes.
68 # Map OpenERP core exceptions to XML-RPC fault codes. Specific exceptions
69 # defined in ``openerp.exceptions`` are mapped to specific fault codes;
70 # all the other exceptions are mapped to the generic
71 # RPC_FAULT_CODE_APPLICATION_ERROR value.
72 # This also mimics SimpleXMLRPCDispatcher._marshaled_dispatch() for
75 result = openerp.http.dispatch_rpc(service, method, params)
76 response = xmlrpclib.dumps((result,), methodresponse=1, allow_none=False, encoding=None)
79 response = xmlrpc_handle_exception_string(e)
81 response = xmlrpc_handle_exception_int(e)
82 start_response("200 OK", [('Content-Type','text/xml'), ('Content-Length', str(len(response)))])
85 def xmlrpc_handle_exception_int(e):
86 if isinstance(e, openerp.osv.orm.except_orm): # legacy
87 fault = xmlrpclib.Fault(RPC_FAULT_CODE_WARNING, openerp.tools.ustr(e.value))
88 response = xmlrpclib.dumps(fault, allow_none=False, encoding=None)
89 elif isinstance(e, openerp.exceptions.Warning) or isinstance(e, openerp.exceptions.RedirectWarning):
90 fault = xmlrpclib.Fault(RPC_FAULT_CODE_WARNING, str(e))
91 response = xmlrpclib.dumps(fault, allow_none=False, encoding=None)
92 elif isinstance (e, openerp.exceptions.AccessError):
93 fault = xmlrpclib.Fault(RPC_FAULT_CODE_ACCESS_ERROR, str(e))
94 response = xmlrpclib.dumps(fault, allow_none=False, encoding=None)
95 elif isinstance(e, openerp.exceptions.AccessDenied):
96 fault = xmlrpclib.Fault(RPC_FAULT_CODE_ACCESS_DENIED, str(e))
97 response = xmlrpclib.dumps(fault, allow_none=False, encoding=None)
98 elif isinstance(e, openerp.exceptions.DeferredException):
100 # Which one is the best ?
101 formatted_info = "".join(traceback.format_exception(*info))
102 #formatted_info = openerp.tools.exception_to_unicode(e) + '\n' + info
103 fault = xmlrpclib.Fault(RPC_FAULT_CODE_APPLICATION_ERROR, formatted_info)
104 response = xmlrpclib.dumps(fault, allow_none=False, encoding=None)
106 if hasattr(e, 'message') and e.message == 'AccessDenied': # legacy
107 fault = xmlrpclib.Fault(RPC_FAULT_CODE_ACCESS_DENIED, str(e))
108 response = xmlrpclib.dumps(fault, allow_none=False, encoding=None)
110 info = sys.exc_info()
111 # Which one is the best ?
112 formatted_info = "".join(traceback.format_exception(*info))
113 #formatted_info = openerp.tools.exception_to_unicode(e) + '\n' + info
114 fault = xmlrpclib.Fault(RPC_FAULT_CODE_APPLICATION_ERROR, formatted_info)
115 response = xmlrpclib.dumps(fault, allow_none=None, encoding=None)
118 def xmlrpc_handle_exception_string(e):
119 if isinstance(e, openerp.osv.orm.except_orm):
120 fault = xmlrpclib.Fault('warning -- ' + e.name + '\n\n' + e.value, '')
121 response = xmlrpclib.dumps(fault, allow_none=False, encoding=None)
122 elif isinstance(e, openerp.exceptions.Warning):
123 fault = xmlrpclib.Fault('warning -- Warning\n\n' + str(e), '')
124 response = xmlrpclib.dumps(fault, allow_none=False, encoding=None)
125 elif isinstance(e, openerp.exceptions.AccessError):
126 fault = xmlrpclib.Fault('warning -- AccessError\n\n' + str(e), '')
127 response = xmlrpclib.dumps(fault, allow_none=False, encoding=None)
128 elif isinstance(e, openerp.exceptions.AccessDenied):
129 fault = xmlrpclib.Fault('AccessDenied', str(e))
130 response = xmlrpclib.dumps(fault, allow_none=False, encoding=None)
131 elif isinstance(e, openerp.exceptions.DeferredException):
133 formatted_info = "".join(traceback.format_exception(*info))
134 fault = xmlrpclib.Fault(openerp.tools.ustr(e.message), formatted_info)
135 response = xmlrpclib.dumps(fault, allow_none=False, encoding=None)
137 info = sys.exc_info()
138 formatted_info = "".join(traceback.format_exception(*info))
139 fault = xmlrpclib.Fault(openerp.tools.exception_to_unicode(e), formatted_info)
140 response = xmlrpclib.dumps(fault, allow_none=None, encoding=None)
143 def wsgi_xmlrpc(environ, start_response):
144 """ Two routes are available for XML-RPC
146 /xmlrpc/<service> route returns faultCode as strings. This is a historic
147 violation of the protocol kept for compatibility.
149 /xmlrpc/2/<service> is a new route that returns faultCode as int and is
150 therefore fully compliant.
152 if environ['REQUEST_METHOD'] == 'POST' and environ['PATH_INFO'].startswith('/xmlrpc/'):
153 length = int(environ['CONTENT_LENGTH'])
154 data = environ['wsgi.input'].read(length)
156 # Distinguish betweed the 2 faultCode modes
157 string_faultcode = True
158 if environ['PATH_INFO'].startswith('/xmlrpc/2/'):
159 service = environ['PATH_INFO'][len('/xmlrpc/2/'):]
160 string_faultcode = False
162 service = environ['PATH_INFO'][len('/xmlrpc/'):]
164 params, method = xmlrpclib.loads(data)
165 return xmlrpc_return(start_response, service, method, params, string_faultcode)
167 # WSGI handlers registered through the register_wsgi_handler() function below.
169 # RPC endpoints registered through the register_rpc_endpoint() function below.
172 def register_wsgi_handler(handler):
173 """ Register a WSGI handler.
175 Handlers are tried in the order they are added. We might provide a way to
176 register a handler for specific routes later.
178 module_handlers.append(handler)
180 def register_rpc_endpoint(endpoint, handler):
181 """ Register a handler for a given RPC enpoint.
183 rpc_handlers[endpoint] = handler
185 def application_unproxied(environ, start_response):
186 """ WSGI entry point."""
187 # cleanup db/uid trackers - they're set at HTTP dispatch in
188 # web.session.OpenERPSession.send() and at RPC dispatch in
189 # openerp.service.web_services.objects_proxy.dispatch().
190 # /!\ The cleanup cannot be done at the end of this `application`
191 # method because werkzeug still produces relevant logging afterwards
192 if hasattr(threading.current_thread(), 'uid'):
193 del threading.current_thread().uid
194 if hasattr(threading.current_thread(), 'dbname'):
195 del threading.current_thread().dbname
197 with openerp.api.Environment.manage():
198 # Try all handlers until one returns some result (i.e. not None).
199 wsgi_handlers = [wsgi_xmlrpc]
200 wsgi_handlers += module_handlers
201 for handler in wsgi_handlers:
202 result = handler(environ, start_response)
207 # We never returned from the loop.
208 response = 'No handler found.\n'
209 start_response('404 Not Found', [('Content-Type', 'text/plain'), ('Content-Length', str(len(response)))])
212 def application(environ, start_response):
213 if config['proxy_mode'] and 'HTTP_X_FORWARDED_HOST' in environ:
214 return werkzeug.contrib.fixers.ProxyFix(application_unproxied)(environ, start_response)
216 return application_unproxied(environ, start_response)
219 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4: