Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Tip revision: 4e02a97bd786bde6485210bd1c0f36fdc8ea8a56 authored by cvs2svn on 12 August 1998, 02:38:11 UTC
This commit was manufactured by cvs2svn to create tag 'r152a1'.
This commit was manufactured by cvs2svn to create tag 'r152a1'.
Tip revision: 4e02a97
pysvr.py
#! /usr/bin/env python
"""A multi-threaded telnet-like server that gives a Python prompt.
This is really a prototype for the same thing in C.
Usage: pysvr.py [port]
For security reasons, it only accepts requests from the current host.
This can still be insecure, but restricts violations from people who
can log in on your machine. Use with caution!
"""
import sys, os, string, getopt, thread, socket, traceback
PORT = 4000 # Default port
def main():
try:
opts, args = getopt.getopt(sys.argv[1:], "")
if len(args) > 1:
raise getopt.error, "Too many arguments."
except getopt.error, msg:
usage(msg)
for o, a in opts:
pass
if args:
try:
port = string.atoi(args[0])
except ValueError, msg:
usage(msg)
else:
port = PORT
main_thread(port)
def usage(msg=None):
sys.stdout = sys.stderr
if msg:
print msg
print "\n", __doc__,
sys.exit(2)
def main_thread(port):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind(("", port))
sock.listen(5)
print "Listening on port", port, "..."
while 1:
(conn, addr) = sock.accept()
if addr[0] != conn.getsockname()[0]:
conn.close()
print "Refusing connection from non-local host", addr[0], "."
continue
thread.start_new_thread(service_thread, (conn, addr))
del conn, addr
def service_thread(conn, addr):
(caddr, cport) = addr
print "Thread %s has connection from %s.\n" % (str(thread.get_ident()),
caddr),
stdin = conn.makefile("r")
stdout = conn.makefile("w", 0)
run_interpreter(stdin, stdout)
print "Thread %s is done.\n" % str(thread.get_ident()),
def run_interpreter(stdin, stdout):
globals = {}
try:
str(sys.ps1)
except:
sys.ps1 = ">>> "
source = ""
while 1:
stdout.write(sys.ps1)
line = stdin.readline()
if line[:2] == '\377\354':
line = ""
if not line and not source:
break
if line[-2:] == '\r\n':
line = line[:-2] + '\n'
source = source + line
try:
code = compile_command(source)
except SyntaxError, err:
source = ""
traceback.print_exception(SyntaxError, err, None, file=stdout)
continue
if not code:
continue
source = ""
try:
run_command(code, stdin, stdout, globals)
except SystemExit, how:
if how:
try:
how = str(how)
except:
how = ""
stdout.write("Exit %s\n" % how)
break
stdout.write("\nGoodbye.\n")
def run_command(code, stdin, stdout, globals):
save = sys.stdin, sys.stdout, sys.stderr
try:
sys.stdout = sys.stderr = stdout
sys.stdin = stdin
try:
exec code in globals
except SystemExit, how:
raise SystemExit, how, sys.exc_info()[2]
except:
type, value, tb = sys.exc_info()
if tb: tb = tb.tb_next
traceback.print_exception(type, value, tb)
del tb
finally:
sys.stdin, sys.stdout, sys.stderr = save
from code import compile_command
main()