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# -*- python -*-
# Copyright (C) 2006 by the Free Software Foundation, Inc.
#
# 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; either version 2
# of the License, or (at your option) any later version.
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
# USA.
import sys
STEALTH_MODE = False
# Shoul this be configurable in Defaults.py?
def websafe(s):
return s
import os
import StringIO
from email import message_from_string
from Mailman.configuration import config
SCRIPTS = ['admin', 'admindb', 'confirm', 'create',
'edithtml', 'listinfo', 'options', 'private',
'rmlist', 'roster', 'subscribe']
SLASH = '/'
NL2 = '\n\n'
CRLF2 = '\r\n\r\n'
# WSGI to CGI wrapper. Mostly copied from scripts/driver.
def mailman_app(environ, start_response):
"""wrapper to *.py cgi commands"""
global STEALTH_MODE, websafe
try:
try:
if not STEALTH_MODE:
from Mailman.Utils import websafe
except:
STEALTH_MODE = True
raise
import logging
log = logging.getLogger('mailman.error')
from Mailman import i18n
i18n.set_language(config.DEFAULT_SERVER_LANGUAGE)
path = environ['PATH_INFO']
paths = path.split(SLASH)
script = paths[1]
if script in SCRIPTS:
environ['SCRIPT_NAME'] = script
if len(paths) > 2:
environ['PATH_INFO'] = SLASH + SLASH.join(paths[2:])
else:
environ['PATH_INFO'] = ''
# reverse proxy environment.
if environ.has_key('HTTP_X_FORWARDED_HOST'):
environ['HTTP_HOST'] = environ['HTTP_X_FORWARDED_HOST']
if environ.has_key('HTTP_X_FORWARDED_FOR'):
environ['REMOTE_HOST'] = environ['HTTP_X_FORWARDED_FOR']
modname = 'Mailman.Cgi.' + script
# Clear previous cookie before setting new one.
os.environ['HTTP_COOKIE'] = ''
for k, v in environ.items():
os.environ[k] = str(v)
# Prepare for redirection.
save_stdin = sys.stdin
# CGI writes its output to sys.stdout, while wsgi app should
# return (list of) strings.
save_stdout = sys.stdout
save_stderr = sys.stderr
tmpstdout = StringIO.StringIO()
tmpstderr = StringIO.StringIO()
response = ''
try:
try:
sys.stdin = environ['wsgi.input']
sys.stdout = tmpstdout
sys.stderr = tmpstderr
__import__(modname)
sys.modules[modname].main()
response = sys.stdout.getvalue()
finally:
sys.stdin = save_stdin
sys.stdout = save_stdout
sys.stderr = save_stderr
except SystemExit:
sys.stdout.write(tmpstdout.getvalue())
if response:
try:
head, content = response.split(NL2, 1)
except ValueError:
head, content = response.split(CRLF2, 1)
m = message_from_string(head + CRLF2)
start_response('200 OK', m.items())
return [content]
else:
# TBD: Error Code/Message
start_response('500 Server Error', [])
return '500 Internal Server Error'
else:
# TBD: Error Message
start_response('404 Not Found', [])
return '404 Not Found'
except:
start_response('200 OK', [('Content-Type', 'text/html')])
retstring = print_traceback(log)
retstring +=print_environment(log)
return retstring
# These functions are extracted and modified from scripts/driver.
#
# If possible, we print the error to two places. One will always be stdout
# and the other will be the log file if a log file was created. It is assumed
# that stdout is an HTML sink.
def print_traceback(log=None):
try:
import traceback
except ImportError:
traceback = None
try:
from Mailman.mm_cfg import VERSION
except ImportError:
VERSION = '<undetermined>'
# Write to the log file first.
if log:
outfp = StringIO.StringIO()
print >> outfp, '@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@'
print >> outfp, '[----- Mailman Version: %s -----]' % VERSION
print >> outfp, '[----- Traceback ------]'
if traceback:
traceback.print_exc(file=outfp)
else:
print >> outfp, '[failed to import module traceback]'
print >> outfp, '[exc: %s, var: %s]' % sys.exc_info()[0:2]
# Don't use .exception() since that'll give us the exception twice.
# IWBNI we could print directly to the log's stream, or treat a log
# like an output stream.
log.error('%s', outfp.getvalue())
# return HTML sink.
htfp = StringIO.StringIO()
print >> htfp, """\
<head><title>Bug in Mailman version %(VERSION)s</title></head>
<body bgcolor=#ffffff><h2>Bug in Mailman version %(VERSION)s</h2>
<p><h3>We're sorry, we hit a bug!</h3>
""" % locals()
if not STEALTH_MODE:
print >> htfp, '''<p>If you would like to help us identify the problem,
please email a copy of this page to the webmaster for this site with
a description of what happened. Thanks!
<h4>Traceback:</h4><p><pre>'''
exc_info = sys.exc_info()
if traceback:
for line in traceback.format_exception(*exc_info):
print >> htfp, websafe(line)
else:
print >> htfp, '[failed to import module traceback]'
print >> htfp, '[exc: %s, var: %s]' %\
[websafe(x) for x in exc_info[0:2]]
print >> htfp, '\n\n</pre></body>'
else:
print >> htfp, '''<p>Please inform the webmaster for this site of this
problem. Printing of traceback and other system information has been
explicitly inhibited, but the webmaster can find this information in the
Mailman error logs.'''
return htfp.getvalue()
def print_environment(log=None):
try:
import os
except ImportError:
os = None
if log:
outfp = StringIO.StringIO()
# Write some information about our Python executable to the log file.
print >> outfp, '[----- Python Information -----]'
print >> outfp, 'sys.version =', sys.version
print >> outfp, 'sys.executable =', sys.executable
print >> outfp, 'sys.prefix =', sys.prefix
print >> outfp, 'sys.exec_prefix =', sys.exec_prefix
print >> outfp, 'sys.path =', sys.exec_prefix
print >> outfp, 'sys.platform =', sys.platform
# Write the same information to the HTML sink.
htfp = StringIO.StringIO()
if not STEALTH_MODE:
print >> htfp, '''\
<p><hr><h4>Python information:</h4>
<p><table>
<tr><th>Variable</th><th>Value</th></tr>
<tr><td><tt>sys.version</tt></td><td> %s </td></tr>
<tr><td><tt>sys.executable</tt></td><td> %s </td></tr>
<tr><td><tt>sys.prefix</tt></td><td> %s </td></tr>'
<tr><td><tt>sys.exec_prefix</tt></td><td> %s </td></tr>
<tr><td><tt>sys.path</tt></td><td> %s </td></tr>
<tr><td><tt>sys.platform</tt></td><td> %s </td></tr>
</table>''' % (sys.version, sys.executable, sys.prefix,
sys.exec_prefix, sys.path, sys.platform)
# Write environment variables to the log file.
if log:
print >> outfp, '[----- Environment Variables -----]'
if os:
for k, v in os.environ.items():
print >> outfp, '\t%s: %s' % (k, v)
else:
print >> outfp, '[failed to import module os]'
# Write environment variables to the HTML sink.
if not STEALTH_MODE:
print >> htfp, '''\
<p><hr><h4>Environment variables:</h4>
<p><table>
<tr><th>Variable</th><th>Value</th></tr>
'''
if os:
for k, v in os.environ.items():
print >> htfp, '<tr><td><tt>' + websafe(k) + \
'</tt></td><td>' + websafe(v) + \
'</td></tr>'
print >> htfp, '</table>'
else:
print >> htfp, '<p><hr>[failed to import module os]'
# Dump the log output
if log:
log.error('%s', outfp.getvalue())
return htfp.getvalue()
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