diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/python-2.6.1/Demo/threads/telnet.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/python-2.6.1/Demo/threads/telnet.py Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,114 @@ +# Minimal interface to the Internet telnet protocol. +# +# *** modified to use threads *** +# +# It refuses all telnet options and does not recognize any of the other +# telnet commands, but can still be used to connect in line-by-line mode. +# It's also useful to play with a number of other services, +# like time, finger, smtp and even ftp. +# +# Usage: telnet host [port] +# +# The port may be a service name or a decimal port number; +# it defaults to 'telnet'. + + +import sys, os, time +from socket import * +import thread + +BUFSIZE = 8*1024 + +# Telnet protocol characters + +IAC = chr(255) # Interpret as command +DONT = chr(254) +DO = chr(253) +WONT = chr(252) +WILL = chr(251) + +def main(): + if len(sys.argv) < 2: + sys.stderr.write('usage: telnet hostname [port]\n') + sys.exit(2) + host = sys.argv[1] + try: + hostaddr = gethostbyname(host) + except error: + sys.stderr.write(sys.argv[1] + ': bad host name\n') + sys.exit(2) + # + if len(sys.argv) > 2: + servname = sys.argv[2] + else: + servname = 'telnet' + # + if '0' <= servname[:1] <= '9': + port = eval(servname) + else: + try: + port = getservbyname(servname, 'tcp') + except error: + sys.stderr.write(servname + ': bad tcp service name\n') + sys.exit(2) + # + s = socket(AF_INET, SOCK_STREAM) + # + try: + s.connect((host, port)) + except error, msg: + sys.stderr.write('connect failed: %r\n' % (msg,)) + sys.exit(1) + # + thread.start_new(child, (s,)) + parent(s) + +def parent(s): + # read socket, write stdout + iac = 0 # Interpret next char as command + opt = '' # Interpret next char as option + while 1: + data, dummy = s.recvfrom(BUFSIZE) + if not data: + # EOF -- exit + sys.stderr.write( '(Closed by remote host)\n') + sys.exit(1) + cleandata = '' + for c in data: + if opt: + print ord(c) +## print '(replying: %r)' % (opt+c,) + s.send(opt + c) + opt = '' + elif iac: + iac = 0 + if c == IAC: + cleandata = cleandata + c + elif c in (DO, DONT): + if c == DO: print '(DO)', + else: print '(DONT)', + opt = IAC + WONT + elif c in (WILL, WONT): + if c == WILL: print '(WILL)', + else: print '(WONT)', + opt = IAC + DONT + else: + print '(command)', ord(c) + elif c == IAC: + iac = 1 + print '(IAC)', + else: + cleandata = cleandata + c + sys.stdout.write(cleandata) + sys.stdout.flush() +## print 'Out:', repr(cleandata) + +def child(s): + # read stdin, write socket + while 1: + line = sys.stdin.readline() +## print 'Got:', repr(line) + if not line: break + s.send(line) + +main()