C///

\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// # A simple FTP client. # # The information to write this program was gathered from RFC 959, # but this is not a complete implementation! Yet it shows how a simple # FTP client can be built, and you are welcome to extend it to suit # it to your needs... # # How it works (assuming you've read the RFC): # # User commands are passed uninterpreted to the server. However, the # user never needs to send a PORT command. Rather, the client opens a # port right away and sends the appropriate PORT command to the server. # When a response code 150 is received, this port is used to receive # the data (which is written to stdout in this version), and when the # data is exhausted, a new port is opened and a corresponding PORT # command sent. In order to avoid errors when reusing ports quickly # (and because there is no s.getsockname() method in Python yet) we # cycle through a number of ports in the 50000 range. import sys, posix, string from socket import * BUFSIZE = 1024 # Default port numbers used by the FTP protocol. # FTP_PORT = 21 FTP_DATA_PORT = FTP_PORT - 1 # Change the data port to something not needing root permissions. # FTP_DATA_PORT = FTP_DATA_PORT + 50000 # Main program (called at the end of this file). # def main(): hostname = sys.argv[1] control(hostname) # Control process (user interface and user protocol interpreter). # def control(hostname): # # Create control connection # s = socket(AF_INET, SOCK_STREAM) s.connect((hostname, FTP_PORT)) f = s.makefile('r') # Reading the replies is easier from a file... # # Control loop # r = None while 1: code = getreply(f) if code in ('221', 'EOF'): break if code == '150': getdata(r) code = getreply(f) r = None if not r: r = newdataport(s, f) cmd = getcommand() if not cmd: break s.send(cmd + '\r\n') # Create a new data port and send a PORT command to the server for it. # (Cycle through a number of ports to avoid problems with reusing # a port within a short time.) # nextport = 0 # def newdataport(s, f): global nextport