/usr/lib/python2.7/dist-packages/pygopherd/initialization.py is in pygopherd 2.0.18.3+nmu4ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 | # Python-based gopher server
# Module: initialization
# COPYRIGHT #
# Copyright (C) 2002 John Goerzen
#
# 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 of the License.
#
# 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
# END OF COPYRIGHT #
from ConfigParser import ConfigParser
# Import lots of stuff so it's here before chrooting.
import socket, os, sys, SocketServer, re, stat, os.path, UserDict, tempfile
import time, atexit, errno, struct
from pygopherd import handlers, protocols, GopherExceptions, logger, sighandlers
from pygopherd.protocols import *
from pygopherd.protocols import ProtocolMultiplexer
from pygopherd.handlers import *
from pygopherd.handlers import HandlerMultiplexer
import pygopherd.fileext
import mimetypes
import traceback
def initconffile(conffile):
if not (os.path.isfile(conffile) and os.access(conffile, os.R_OK)):
raise Exception, "Could NOT access config file %s\nPlease specify config file as a command-line argument\n" % conffile
config = ConfigParser()
config.read(conffile)
return config
def initlogger(config, conffile):
logger.init(config)
logger.log("Pygopherd starting, using configuration file %s" % conffile)
def initexceptions(config):
GopherExceptions.init(config.getboolean("pygopherd", "tracebacks"))
def initmimetypes(config):
mimetypesfiles = config.get("pygopherd", "mimetypes").split(":")
mimetypesfiles = filter(lambda x: os.path.isfile(x) and os.access(x, os.R_OK),
mimetypesfiles)
if not mimetypesfiles:
errmsg = "Could not find any mimetypes files; check mimetypes option in config."
logger.log(errmsg)
raise Exception, errmsg
configencoding = eval(config.get("pygopherd", "encoding"))
mimetypes.encodings_map.clear()
for key, value in configencoding:
mimetypes.encodings_map[key] = value
mimetypes.init(mimetypesfiles)
logger.log("mimetypes initialized with files: " + str(mimetypesfiles))
# Set up the inverse mapping file.
pygopherd.fileext.init()
class GopherRequestHandler(SocketServer.StreamRequestHandler):
def handle(self):
request = self.rfile.readline()
protohandler = \
ProtocolMultiplexer.getProtocol(request, \
self.server, self, self.rfile, self.wfile, self.server.config)
try:
protohandler.handle()
except socket.error, e:
if not (e[0] in [errno.ECONNRESET, errno.EPIPE]):
traceback.print_exc()
GopherExceptions.log(sys.exc_info()[1], protohandler, None)
except:
if GopherExceptions.tracebacks:
# Yes, this may be invalid. Not much else we can do.
#traceback.print_exc(file = self.wfile)
traceback.print_exc()
GopherExceptions.log(sys.exc_info()[1], protohandler, None)
def getserverobject(config):
# Pick up the server type from the config.
servertype = eval("SocketServer." + config.get("pygopherd", "servertype"))
class MyServer(servertype):
allow_reuse_address = 1
def server_bind(self):
"""Override server_bind to store server name."""
servertype.server_bind(self)
# Set a timeout.
if config.has_option('pygopherd', 'timeout'):
mytimeout = struct.pack("ll", long(config.get('pygopherd', 'timeout')), 0)
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_RCVTIMEO,
mytimeout)
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_SNDTIMEO,
mytimeout)
#self.socket.settimeout(int(config.get('pygopherd', 'timeout')))
host, port = self.socket.getsockname()
if config.has_option("pygopherd", "servername"):
self.server_name = config.get("pygopherd", "servername")
else:
self.server_name = socket.getfqdn(host)
if config.has_option("pygopherd", "advertisedport"):
self.server_port = config.getint("pygopherd", "advertisedport")
else:
self.server_port = port
# Instantiate a server. Has to be done before the security so we can
# get a privileged port if necessary.
interface = ''
if config.has_option('pygopherd', 'interface'):
servername = config.get('pygopherd', 'interface')
interface = config.get('pygopherd', 'interface')
try:
s = MyServer((interface, config.getint('pygopherd', 'port')),
GopherRequestHandler)
except:
GopherExceptions.log(sys.exc_info()[1], None, None)
logger.log("Application startup NOT successful!")
raise
s.config = config
return s
def initsecurity(config):
idsetuid = None
idsetgid = None
if config.has_option("pygopherd", "setuid"):
import pwd
idsetuid = pwd.getpwnam(config.get("pygopherd", "setuid"))[2]
if config.has_option("pygopherd", "setgid"):
import grp
idsetgid = grp.getgrnam(config.get("pygopherd", "setgid"))[2]
if config.getboolean("pygopherd", "usechroot"):
os.chroot(config.get("pygopherd", "root"))
logger.log("Chrooted to " + config.get("pygopherd", "root"))
config.set("pygopherd", "root", "/")
if idsetuid != None or idsetgid != None:
os.setgroups( () )
logger.log("Supplemental group list cleared.")
if idsetgid != None:
os.setregid(idsetgid, idsetgid)
logger.log("Switched to group %d" % idsetgid)
if idsetuid != None:
os.setreuid(idsetuid, idsetuid)
logger.log("Switched to uid %d" % idsetuid)
def initconditionaldetach(config):
if config.getboolean("pygopherd", "detach"):
pid = os.fork()
if pid:
logger.log("Parent process detaching; child is %d" % pid)
sys.exit(0)
def initpidfile(config):
if config.has_option("pygopherd", "pidfile"):
pidfile = config.get("pygopherd", "pidfile")
fd = open(pidfile, "wt")
fd.write("%d\n" % os.getpid())
fd.close()
def initpgrp(config):
if 'setpgrp' in os.__dict__:
os.setpgrp()
pgrp = os.getpgrp()
logger.log("Process group is %d" % pgrp)
return pgrp
else:
logger.log("setpgrp() unavailable; not initializing process group")
return None
def initsighandlers(config, pgrp):
sighandlers.setsighuphandler()
sighandlers.setsigtermhandler(pgrp)
def initeverything(conffile):
config = initconffile(conffile)
initlogger(config, conffile)
initexceptions(config)
initmimetypes(config)
s = getserverobject(config)
initconditionaldetach(config)
initpidfile(config)
pgrp = initpgrp(config)
initsighandlers(config, pgrp)
initsecurity(config)
os.chdir(config.get("pygopherd", "root"))
logger.log("Running. Root is '%s'" % config.get("pygopherd", "root"))
return s
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