import hmac
import random
import sha
-import simplejson
import sys
import time
import urllib
import socket
import cherrypy
+from cherrypy import _cperror
from StringIO import StringIO
-def revertStandardError():
- """Move stderr to stdout, and return the contents of the old stderr."""
- errio = sys.stderr
- if not isinstance(errio, StringIO):
- return ''
- sys.stderr = sys.stdout
- errio.seek(0)
- return errio.read()
def printError():
"""Revert stderr to stdout, and print the contents of stderr"""
import atexit
atexit.register(printError)
-import templates
-from Cheetah.Template import Template
import validation
import cache_acls
from webcommon import State
from invirt.config import structs as config
from invirt.common import InvalidInput, CodeError
-from view import View
+from view import View, revertStandardError
+
+class InvirtUnauthWeb(View):
+ @cherrypy.expose
+ @cherrypy.tools.mako(filename="/unauth.mako")
+ def index(self):
+ return {'simple': True}
class InvirtWeb(View):
def __init__(self):
super(self.__class__,self).__init__()
connect()
self._cp_config['tools.require_login.on'] = True
+ self._cp_config['tools.catch_stderr.on'] = True
self._cp_config['tools.mako.imports'] = ['from invirt.config import structs as config',
'from invirt import database']
+ self._cp_config['request.error_response'] = self.handle_error
+
+ @cherrypy.expose
+ @cherrypy.tools.mako(filename="/invalid.mako")
+ def invalidInput(self):
+ """Print an error page when an InvalidInput exception occurs"""
+ err = cherrypy.request.prev.params["err"]
+ emsg = cherrypy.request.prev.params["emsg"]
+ d = dict(err_field=err.err_field,
+ err_value=str(err.err_value), stderr=emsg,
+ errorMessage=str(err))
+ return d
+
+ @cherrypy.expose
+ @cherrypy.tools.mako(filename="/error.mako")
+ def error(self):
+ """Print an error page when an exception occurs"""
+ op = cherrypy.request.prev.path_info
+ username = cherrypy.request.login
+ err = cherrypy.request.prev.params["err"]
+ emsg = cherrypy.request.prev.params["emsg"]
+ traceback = cherrypy.request.prev.params["traceback"]
+ d = dict(op=op, user=username, fields=cherrypy.request.prev.params,
+ errorMessage=str(err), stderr=emsg, traceback=traceback)
+ error_raw = cherrypy.request.lookup.get_template("/error_raw.mako")
+ details = error_raw.render(**d)
+ exclude = config.web.errormail_exclude
+ if username not in exclude and '*' not in exclude:
+ send_error_mail('xvm error on %s for %s: %s' % (op, cherrypy.request.login, err),
+ details)
+ d['details'] = details
+ return d
def __getattr__(self, name):
if name in ("admin", "overlord"):
else:
return super(InvirtWeb, self).__getattr__(name)
+ def handle_error(self):
+ err = sys.exc_info()[1]
+ if isinstance(err, InvalidInput):
+ cherrypy.request.params['err'] = err
+ cherrypy.request.params['emsg'] = revertStandardError()
+ raise cherrypy.InternalRedirect('/invalidInput')
+ if not cherrypy.request.prev or 'err' not in cherrypy.request.prev.params:
+ cherrypy.request.params['err'] = err
+ cherrypy.request.params['emsg'] = revertStandardError()
+ cherrypy.request.params['traceback'] = _cperror.format_exc()
+ raise cherrypy.InternalRedirect('/error')
+ # fall back to cherrypy default error page
+ cherrypy.HTTPError(500).set_response()
+
@cherrypy.expose
@cherrypy.tools.mako(filename="/list.mako")
def list(self, result=None):
@cherrypy.expose
def errortest(self):
"""Throw an error, to test the error-tracing mechanisms."""
+ print >>sys.stderr, "look ma, it's a stderr"
raise RuntimeError("test of the emergency broadcast system")
class MachineView(View):
if not back:
raise
print >> sys.stderr, err
- result = err
+ result = str(err)
else:
result = 'Success!'
if not back:
machine = MachineView()
-def pathSplit(path):
- if path.startswith('/'):
- path = path[1:]
- i = path.find('/')
- if i == -1:
- i = len(path)
- return path[:i], path[i:]
-
class Checkpoint:
def __init__(self):
self.start_time = time.time()
checkpoint = Checkpoint()
-def makeErrorPre(old, addition):
- if addition is None:
- return
- if old:
- return old[:-6] + '\n----\n' + str(addition) + '</pre>'
- else:
- return '<p>STDERR:</p><pre>' + str(addition) + '</pre>'
-
-Template.database = database
-Template.config = config
-Template.err = None
-
-class JsonDict:
- """Class to store a dictionary that will be converted to JSON"""
- def __init__(self, **kws):
- self.data = kws
- if 'err' in kws:
- err = kws['err']
- del kws['err']
- self.addError(err)
-
- def __str__(self):
- return simplejson.dumps(self.data)
-
- def addError(self, text):
- """Add stderr text to be displayed on the website."""
- self.data['err'] = \
- makeErrorPre(self.data.get('err'), text)
-
class Defaults:
"""Class to store default values for fields."""
memory = 256
for key in kws:
setattr(self, key, kws[key])
-
-
-DEFAULT_HEADERS = {'Content-Type': 'text/html'}
-
-def invalidInput(op, username, fields, err, emsg):
- """Print an error page when an InvalidInput exception occurs"""
- d = dict(op=op, user=username, err_field=err.err_field,
- err_value=str(err.err_value), stderr=emsg,
- errorMessage=str(err))
- return templates.invalid(searchList=[d])
-
def hasVnc(status):
"""Does the machine with a given status list support VNC?"""
if status is None:
controls.renameMachine(machine, oldname, validate.name)
return dict(machine=machine)
-
-def badOperation(u, s, p, e):
- """Function called when accessing an unknown URI."""
- return ({'Status': '404 Not Found'}, 'Invalid operation.')
-
def infoDict(username, state, machine):
"""Get the variables used by info.tmpl."""
status = controls.statusInfo(machine)
fields = fields)
return d
-def unauthFront(_, _2, _3, fields):
- """Information for unauth'd users."""
- return templates.unauth(searchList=[{'simple' : True,
- 'hostname' : socket.getfqdn()}])
-
-mapping = dict(
- unauth=unauthFront)
-
-def printHeaders(headers):
- """Print a dictionary as HTTP headers."""
- for key, value in headers.iteritems():
- print '%s: %s' % (key, value)
- print
-
def send_error_mail(subject, body):
import subprocess
p.stdin.close()
p.wait()
-def show_error(op, username, fields, err, emsg, traceback):
- """Print an error page when an exception occurs"""
- d = dict(op=op, user=username, fields=fields,
- errorMessage=str(err), stderr=emsg, traceback=traceback)
- details = templates.error_raw(searchList=[d])
- exclude = config.web.errormail_exclude
- if username not in exclude and '*' not in exclude:
- send_error_mail('xvm error on %s for %s: %s' % (op, username, err),
- details)
- d['details'] = details
- return templates.error(searchList=[d])
-
-def handler(username, state, path, fields):
- operation, path = pathSplit(path)
- if not operation:
- operation = 'list'
- print 'Starting', operation
- fun = mapping.get(operation, badOperation)
- return fun(username, state, path, fields)
-
-class App:
- def __init__(self, environ, start_response):
- self.environ = environ
- self.start = start_response
-
- self.username = getUser(environ)
- self.state = State(self.username)
- self.state.environ = environ
-
- random.seed() #sigh
-
- def __iter__(self):
- start_time = time.time()
- database.clear_cache()
- sys.stderr = StringIO()
- fields = cgi.FieldStorage(fp=self.environ['wsgi.input'], environ=self.environ)
- operation = self.environ.get('PATH_INFO', '')
- if not operation:
- self.start("301 Moved Permanently", [('Location', './')])
- return
- if self.username is None:
- operation = 'unauth'
-
- try:
- checkpoint.checkpoint('Before')
- output = handler(self.username, self.state, operation, fields)
- checkpoint.checkpoint('After')
-
- headers = dict(DEFAULT_HEADERS)
- if isinstance(output, tuple):
- new_headers, output = output
- headers.update(new_headers)
- e = revertStandardError()
- if e:
- if hasattr(output, 'addError'):
- output.addError(e)
- else:
- # This only happens on redirects, so it'd be a pain to get
- # the message to the user. Maybe in the response is useful.
- output = output + '\n\nstderr:\n' + e
- output_string = str(output)
- checkpoint.checkpoint('output as a string')
- except Exception, err:
- if not fields.has_key('js'):
- if isinstance(err, InvalidInput):
- self.start('200 OK', [('Content-Type', 'text/html')])
- e = revertStandardError()
- yield str(invalidInput(operation, self.username, fields,
- err, e))
- return
- import traceback
- self.start('500 Internal Server Error',
- [('Content-Type', 'text/html')])
- e = revertStandardError()
- s = show_error(operation, self.username, fields,
- err, e, traceback.format_exc())
- yield str(s)
- return
- status = headers.setdefault('Status', '200 OK')
- del headers['Status']
- self.start(status, headers.items())
- yield output_string
- if fields.has_key('timedebug'):
- yield '<pre>%s</pre>' % cgi.escape(str(checkpoint))
-
-def constructor():
- connect()
- return App
-
-def main():
- from flup.server.fcgi_fork import WSGIServer
- WSGIServer(constructor()).run()
-
-if __name__ == '__main__':
- main()
+random.seed()
projects / invirt/packages/invirt-web.git / blobdiff