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ftplib.pyo
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# Source Generated with Decompyle++
# File: in.pyo (Python 2.4)
"""An FTP client class and some helper functions.
Based on RFC 959: File Transfer Protocol (FTP), by J. Postel and J. Reynolds
Example:
>>> from ftplib import FTP
>>> ftp = FTP('ftp.python.org') # connect to host, default port
>>> ftp.login() # default, i.e.: user anonymous, passwd anonymous@
'230 Guest login ok, access restrictions apply.'
>>> ftp.retrlines('LIST') # list directory contents
total 9
drwxr-xr-x 8 root wheel 1024 Jan 3 1994 .
drwxr-xr-x 8 root wheel 1024 Jan 3 1994 ..
drwxr-xr-x 2 root wheel 1024 Jan 3 1994 bin
drwxr-xr-x 2 root wheel 1024 Jan 3 1994 etc
d-wxrwxr-x 2 ftp wheel 1024 Sep 5 13:43 incoming
drwxr-xr-x 2 root wheel 1024 Nov 17 1993 lib
drwxr-xr-x 6 1094 wheel 1024 Sep 13 19:07 pub
drwxr-xr-x 3 root wheel 1024 Jan 3 1994 usr
-rw-r--r-- 1 root root 312 Aug 1 1994 welcome.msg
'226 Transfer complete.'
>>> ftp.quit()
'221 Goodbye.'
>>>
A nice test that reveals some of the network dialogue would be:
python ftplib.py -d localhost -l -p -l
"""
import os
import sys
try:
import SOCKS
socket = SOCKS
del SOCKS
from socket import getfqdn
socket.getfqdn = getfqdn
del getfqdn
except ImportError:
import socket
__all__ = [
'FTP',
'Netrc']
MSG_OOB = 1
FTP_PORT = 21
class Error(Exception):
pass
class error_reply(Error):
pass
class error_temp(Error):
pass
class error_perm(Error):
pass
class error_proto(Error):
pass
all_errors = (Error, socket.error, IOError, EOFError)
CRLF = '\r\n'
class FTP:
"""An FTP client class.
To create a connection, call the class using these argument:
host, user, passwd, acct
These are all strings, and have default value ''.
Then use self.connect() with optional host and port argument.
To download a file, use ftp.retrlines('RETR ' + filename),
or ftp.retrbinary() with slightly different arguments.
To upload a file, use ftp.storlines() or ftp.storbinary(),
which have an open file as argument (see their definitions
below for details).
The download/upload functions first issue appropriate TYPE
and PORT or PASV commands.
"""
debugging = 0
host = ''
port = FTP_PORT
sock = None
file = None
welcome = None
passiveserver = 1
def __init__(self, host = '', user = '', passwd = '', acct = ''):
if host:
self.connect(host)
if user:
self.login(user, passwd, acct)
def connect(self, host = '', port = 0):
'''Connect to host. Arguments are:
- host: hostname to connect to (string, default previous host)
- port: port to connect to (integer, default previous port)'''
if host:
self.host = host
if port:
self.port = port
msg = 'getaddrinfo returns an empty list'
for res in socket.getaddrinfo(self.host, self.port, 0, socket.SOCK_STREAM):
(af, socktype, proto, canonname, sa) = res
try:
self.sock = socket.socket(af, socktype, proto)
self.sock.connect(sa)
except socket.error:
msg = None
if self.sock:
self.sock.close()
self.sock = None
continue
break
if not self.sock:
raise socket.error, msg
self.af = af
self.file = self.sock.makefile('rb')
self.welcome = self.getresp()
return self.welcome
def getwelcome(self):
'''Get the welcome message from the server.
(this is read and squirreled away by connect())'''
if self.debugging:
print '*welcome*', self.sanitize(self.welcome)
return self.welcome
def set_debuglevel(self, level):
'''Set the debugging level.
The required argument level means:
0: no debugging output (default)
1: print commands and responses but not body text etc.
2: also print raw lines read and sent before stripping CR/LF'''
self.debugging = level
debug = set_debuglevel
def set_pasv(self, val):
'''Use passive or active mode for data transfers.
With a false argument, use the normal PORT mode,
With a true argument, use the PASV command.'''
self.passiveserver = val
def sanitize(self, s):
if s[:5] == 'pass ' or s[:5] == 'PASS ':
i = len(s)
while i > 5 and s[i - 1] in '\r\n':
i = i - 1
s = s[:5] + '*' * (i - 5) + s[i:]
return repr(s)
def putline(self, line):
line = line + CRLF
if self.debugging > 1:
print '*put*', self.sanitize(line)
self.sock.sendall(line)
def putcmd(self, line):
if self.debugging:
print '*cmd*', self.sanitize(line)
self.putline(line)
def getline(self):
line = self.file.readline()
if self.debugging > 1:
print '*get*', self.sanitize(line)
if not line:
raise EOFError
if line[-2:] == CRLF:
line = line[:-2]
elif line[-1:] in CRLF:
line = line[:-1]
return line
def getmultiline(self):
line = self.getline()
if line[3:4] == '-':
code = line[:3]
while None:
nextline = self.getline()
line = line + '\n' + nextline
if nextline[:3] == code and nextline[3:4] != '-':
break
continue
return line
def getresp(self):
resp = self.getmultiline()
if self.debugging:
print '*resp*', self.sanitize(resp)
self.lastresp = resp[:3]
c = resp[:1]
if c in ('1', '2', '3'):
return resp
if c == '4':
raise error_temp, resp
if c == '5':
raise error_perm, resp
raise error_proto, resp
def voidresp(self):
"""Expect a response beginning with '2'."""
resp = self.getresp()
if resp[0] != '2':
raise error_reply, resp
return resp
def abort(self):
"""Abort a file transfer. Uses out-of-band data.
This does not follow the procedure from the RFC to send Telnet
IP and Synch; that doesn't seem to work with the servers I've
tried. Instead, just send the ABOR command as OOB data."""
line = 'ABOR' + CRLF
if self.debugging > 1:
print '*put urgent*', self.sanitize(line)
self.sock.sendall(line, MSG_OOB)
resp = self.getmultiline()
if resp[:3] not in ('426', '226'):
raise error_proto, resp
def sendcmd(self, cmd):
'''Send a command and return the response.'''
self.putcmd(cmd)
return self.getresp()
def voidcmd(self, cmd):
"""Send a command and expect a response beginning with '2'."""
self.putcmd(cmd)
return self.voidresp()
def sendport(self, host, port):
'''Send a PORT command with the current host and the given
port number.
'''
hbytes = host.split('.')
pbytes = [
repr(port / 256),
repr(port % 256)]
bytes = hbytes + pbytes
cmd = 'PORT ' + ','.join(bytes)
return self.voidcmd(cmd)
def sendeprt(self, host, port):
'''Send a EPRT command with the current host and the given port number.'''
af = 0
if self.af == socket.AF_INET:
af = 1
if self.af == socket.AF_INET6:
af = 2
if af == 0:
raise error_proto, 'unsupported address family'
fields = [
'',
repr(af),
host,
repr(port),
'']
cmd = 'EPRT ' + '|'.join(fields)
return self.voidcmd(cmd)
def makeport(self):
'''Create a new socket and send a PORT command for it.'''
msg = 'getaddrinfo returns an empty list'
sock = None
for res in socket.getaddrinfo(None, 0, self.af, socket.SOCK_STREAM, 0, socket.AI_PASSIVE):
(af, socktype, proto, canonname, sa) = res
try:
sock = socket.socket(af, socktype, proto)
sock.bind(sa)
except socket.error:
msg = None
if sock:
sock.close()
sock = None
continue
break
if not sock:
raise socket.error, msg
sock.listen(1)
port = sock.getsockname()[1]
host = self.sock.getsockname()[0]
if self.af == socket.AF_INET:
resp = self.sendport(host, port)
else:
resp = self.sendeprt(host, port)
return sock
def makepasv(self):
if self.af == socket.AF_INET:
(host, port) = parse227(self.sendcmd('PASV'))
else:
(host, port) = parse229(self.sendcmd('EPSV'), self.sock.getpeername())
return (host, port)
def ntransfercmd(self, cmd, rest = None):
"""Initiate a transfer over the data connection.
If the transfer is active, send a port command and the
transfer command, and accept the connection. If the server is
passive, send a pasv command, connect to it, and start the
transfer command. Either way, return the socket for the
connection and the expected size of the transfer. The
expected size may be None if it could not be determined.
Optional `rest' argument can be a string that is sent as the
argument to a RESTART command. This is essentially a server
marker used to tell the server to skip over any data up to the
given marker.
"""
size = None
if self.passiveserver:
(host, port) = self.makepasv()
(af, socktype, proto, canon, sa) = socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM)[0]
conn = socket.socket(af, socktype, proto)
conn.connect(sa)
if rest is not None:
self.sendcmd('REST %s' % rest)
resp = self.sendcmd(cmd)
if resp[0] != '1':
raise error_reply, resp
else:
sock = self.makeport()
if rest is not None:
self.sendcmd('REST %s' % rest)
resp = self.sendcmd(cmd)
if resp[0] != '1':
raise error_reply, resp
(conn, sockaddr) = sock.accept()
if resp[:3] == '150':
size = parse150(resp)
return (conn, size)
def transfercmd(self, cmd, rest = None):
'''Like ntransfercmd() but returns only the socket.'''
return self.ntransfercmd(cmd, rest)[0]
def login(self, user = '', passwd = '', acct = ''):
'''Login, default anonymous.'''
if not user:
user = 'anonymous'
if not passwd:
passwd = ''
if not acct:
acct = ''
if user == 'anonymous' and passwd in ('', '-'):
passwd = passwd + 'anonymous@'
resp = self.sendcmd('USER ' + user)
if resp[0] == '3':
resp = self.sendcmd('PASS ' + passwd)
if resp[0] == '3':
resp = self.sendcmd('ACCT ' + acct)
if resp[0] != '2':
raise error_reply, resp
return resp
def retrbinary(self, cmd, callback, blocksize = 8192, rest = None):
"""Retrieve data in binary mode.
`cmd' is a RETR command. `callback' is a callback function is
called for each block. No more than `blocksize' number of
bytes will be read from the socket. Optional `rest' is passed
to transfercmd().
A new port is created for you. Return the response code.
"""
self.voidcmd('TYPE I')
conn = self.transfercmd(cmd, rest)
while None:
data = conn.recv(blocksize)
if not data:
break
conn.close()
return self.voidresp()
def retrlines(self, cmd, callback = None):
'''Retrieve data in line mode.
The argument is a RETR or LIST command.
The callback function (2nd argument) is called for each line,
with trailing CRLF stripped. This creates a new port for you.
print_line() is the default callback.'''
if callback is None:
callback = print_line
resp = self.sendcmd('TYPE A')
conn = self.transfercmd(cmd)
fp = conn.makefile('rb')
while None:
line = fp.readline()
if self.debugging > 2:
print '*retr*', repr(line)
if not line:
break
if line[-2:] == CRLF:
line = line[:-2]
elif line[-1:] == '\n':
line = line[:-1]
fp.close()
conn.close()
return self.voidresp()
def storbinary(self, cmd, fp, blocksize = 8192):
'''Store a file in binary mode.'''
self.voidcmd('TYPE I')
conn = self.transfercmd(cmd)
while None:
buf = fp.read(blocksize)
if not buf:
break
conn.close()
return self.voidresp()
def storlines(self, cmd, fp):
'''Store a file in line mode.'''
self.voidcmd('TYPE A')
conn = self.transfercmd(cmd)
while None:
buf = fp.readline()
if not buf:
break
if buf[-2:] != CRLF:
if buf[-1] in CRLF:
buf = buf[:-1]
buf = buf + CRLF
conn.close()
return self.voidresp()
def acct(self, password):
'''Send new account name.'''
cmd = 'ACCT ' + password
return self.voidcmd(cmd)
def nlst(self, *args):
'''Return a list of files in a given directory (default the current).'''
cmd = 'NLST'
for arg in args:
cmd = cmd + ' ' + arg
files = []
self.retrlines(cmd, files.append)
return files
def dir(self, *args):
'''List a directory in long form.
By default list current directory to stdout.
Optional last argument is callback function; all
non-empty arguments before it are concatenated to the
LIST command. (This *should* only be used for a pathname.)'''
cmd = 'LIST'
func = None
if args[-1:] and type(args[-1]) != type(''):
args = args[:-1]
func = args[-1]
for arg in args:
if arg:
cmd = cmd + ' ' + arg
continue
self.retrlines(cmd, func)
def rename(self, fromname, toname):
'''Rename a file.'''
resp = self.sendcmd('RNFR ' + fromname)
if resp[0] != '3':
raise error_reply, resp
return self.voidcmd('RNTO ' + toname)
def delete(self, filename):
'''Delete a file.'''
resp = self.sendcmd('DELE ' + filename)
if resp[:3] in ('250', '200'):
return resp
elif resp[:1] == '5':
raise error_perm, resp
else:
raise error_reply, resp
def cwd(self, dirname):
'''Change to a directory.'''
if dirname == '..':
try:
return self.voidcmd('CDUP')
except error_perm:
msg = None
if msg.args[0][:3] != '500':
raise
except:
msg.args[0][:3] != '500'
None<EXCEPTION MATCH>error_perm
if dirname == '':
dirname = '.'
cmd = 'CWD ' + dirname
return self.voidcmd(cmd)
def size(self, filename):
'''Retrieve the size of a file.'''
resp = self.sendcmd('SIZE ' + filename)
if resp[:3] == '213':
s = resp[3:].strip()
try:
return int(s)
except (OverflowError, ValueError):
return long(s)
except:
None<EXCEPTION MATCH>(OverflowError, ValueError)
None<EXCEPTION MATCH>(OverflowError, ValueError)
def mkd(self, dirname):
'''Make a directory, return its full pathname.'''
resp = self.sendcmd('MKD ' + dirname)
return parse257(resp)
def rmd(self, dirname):
'''Remove a directory.'''
return self.voidcmd('RMD ' + dirname)
def pwd(self):
'''Return current working directory.'''
resp = self.sendcmd('PWD')
return parse257(resp)
def quit(self):
'''Quit, and close the connection.'''
resp = self.voidcmd('QUIT')
self.close()
return resp
def close(self):
'''Close the connection without assuming anything about it.'''
if self.file:
self.file.close()
self.sock.close()
self.file = None
self.sock = None
_150_re = None
def parse150(resp):
"""Parse the '150' response for a RETR request.
Returns the expected transfer size or None; size is not guaranteed to
be present in the 150 message.
"""
global _150_re
if resp[:3] != '150':
raise error_reply, resp
if _150_re is None:
import re as re
_150_re = re.compile('150 .* \\((\\d+) bytes\\)', re.IGNORECASE)
m = _150_re.match(resp)
if not m:
return None
s = m.group(1)
try:
return int(s)
except (OverflowError, ValueError):
return long(s)
_227_re = None
def parse227(resp):
"""Parse the '227' response for a PASV request.
Raises error_proto if it does not contain '(h1,h2,h3,h4,p1,p2)'
Return ('host.addr.as.numbers', port#) tuple."""
global _227_re
if resp[:3] != '227':
raise error_reply, resp
if _227_re is None:
import re
_227_re = re.compile('(\\d+),(\\d+),(\\d+),(\\d+),(\\d+),(\\d+)')
m = _227_re.search(resp)
if not m:
raise error_proto, resp
numbers = m.groups()
host = '.'.join(numbers[:4])
port = (int(numbers[4]) << 8) + int(numbers[5])
return (host, port)
def parse229(resp, peer):
"""Parse the '229' response for a EPSV request.
Raises error_proto if it does not contain '(|||port|)'
Return ('host.addr.as.numbers', port#) tuple."""
if resp[:3] != '229':
raise error_reply, resp
left = resp.find('(')
if left < 0:
raise error_proto, resp
right = resp.find(')', left + 1)
if right < 0:
raise error_proto, resp
if resp[left + 1] != resp[right - 1]:
raise error_proto, resp
parts = resp[left + 1:right].split(resp[left + 1])
if len(parts) != 5:
raise error_proto, resp
host = peer[0]
port = int(parts[3])
return (host, port)
def parse257(resp):
"""Parse the '257' response for a MKD or PWD request.
This is a response to a MKD or PWD request: a directory name.
Returns the directoryname in the 257 reply."""
if resp[:3] != '257':
raise error_reply, resp
if resp[3:5] != ' "':
return ''
dirname = ''
i = 5
n = len(resp)
while i < n:
c = resp[i]
i = i + 1
if c == '"':
if i >= n or resp[i] != '"':
break
i = i + 1
dirname = dirname + c
return dirname
def print_line(line):
'''Default retrlines callback to print a line.'''
print line
def ftpcp(source, sourcename, target, targetname = '', type = 'I'):
'''Copy file from one FTP-instance to another.'''
if not targetname:
targetname = sourcename
type = 'TYPE ' + type
source.voidcmd(type)
target.voidcmd(type)
(sourcehost, sourceport) = parse227(source.sendcmd('PASV'))
target.sendport(sourcehost, sourceport)
treply = target.sendcmd('STOR ' + targetname)
if treply[:3] not in ('125', '150'):
raise error_proto
sreply = source.sendcmd('RETR ' + sourcename)
if sreply[:3] not in ('125', '150'):
raise error_proto
source.voidresp()
target.voidresp()
class Netrc:
"""Class to parse & provide access to 'netrc' format files.
See the netrc(4) man page for information on the file format.
WARNING: This class is obsolete -- use module netrc instead.
"""
__defuser = None
__defpasswd = None
__defacct = None
def __init__(self, filename = None):
if filename is None:
if 'HOME' in os.environ:
filename = os.path.join(os.environ['HOME'], '.netrc')
else:
raise IOError, 'specify file to load or set $HOME'
self._Netrc__hosts = { }
self._Netrc__macros = { }
fp = open(filename, 'r')
in_macro = 0
while None:
line = fp.readline()
if not line:
break
if in_macro and line.strip():
macro_lines.append(line)
continue
elif in_macro:
self._Netrc__macros[macro_name] = tuple(macro_lines)
in_macro = 0
words = line.split()
host = None
user = None
passwd = None
acct = None
default = 0
i = 0
while i < len(words):
w1 = words[i]
if i + 1 < len(words):
w2 = words[i + 1]
else:
w2 = None
if w1 == 'default':
default = 1
elif w1 == 'machine' and w2:
host = w2.lower()
i = i + 1
elif w1 == 'login' and w2:
user = w2
i = i + 1
elif w1 == 'password' and w2:
passwd = w2
i = i + 1
elif w1 == 'account' and w2:
acct = w2
i = i + 1
elif w1 == 'macdef' and w2:
macro_name = w2
macro_lines = []
in_macro = 1
break
i = i + 1
if default:
if not user:
pass
self._Netrc__defuser = self._Netrc__defuser
if not passwd:
pass
self._Netrc__defpasswd = self._Netrc__defpasswd
if not acct:
pass
self._Netrc__defacct = self._Netrc__defacct
if host:
if host in self._Netrc__hosts:
(ouser, opasswd, oacct) = self._Netrc__hosts[host]
if not user:
pass
user = ouser
if not passwd:
pass
passwd = opasswd
if not acct:
pass
acct = oacct
self._Netrc__hosts[host] = (user, passwd, acct)
continue
fp.close()
def get_hosts(self):
'''Return a list of hosts mentioned in the .netrc file.'''
return self._Netrc__hosts.keys()
def get_account(self, host):
'''Returns login information for the named host.
The return value is a triple containing userid,
password, and the accounting field.
'''
host = host.lower()
user = None
passwd = None
acct = None
if host in self._Netrc__hosts:
(user, passwd, acct) = self._Netrc__hosts[host]
if not user:
pass
user = self._Netrc__defuser
if not passwd:
pass
passwd = self._Netrc__defpasswd
if not acct:
pass
acct = self._Netrc__defacct
return (user, passwd, acct)
def get_macros(self):
'''Return a list of all defined macro names.'''
return self._Netrc__macros.keys()
def get_macro(self, macro):
'''Return a sequence of lines which define a named macro.'''
return self._Netrc__macros[macro]
def test():
'''Test program.
Usage: ftp [-d] [-r[file]] host [-l[dir]] [-d[dir]] [-p] [file] ...
-d dir
-l list
-p password
'''
if len(sys.argv) < 2:
print test.__doc__
sys.exit(0)
debugging = 0
rcfile = None
while sys.argv[1] == '-d':
debugging = debugging + 1
del sys.argv[1]
if sys.argv[1][:2] == '-r':
rcfile = sys.argv[1][2:]
del sys.argv[1]
host = sys.argv[1]
ftp = FTP(host)
ftp.set_debuglevel(debugging)
userid = passwd = acct = ''
try:
netrc = Netrc(rcfile)
except IOError:
if rcfile is not None:
sys.stderr.write('Could not open account file -- using anonymous login.')
except:
rcfile is not None
try:
(userid, passwd, acct) = netrc.get_account(host)
except KeyError:
sys.stderr.write('No account -- using anonymous login.')
ftp.login(userid, passwd, acct)
for file in sys.argv[2:]:
if file[:2] == '-l':
ftp.dir(file[2:])
continue
if file[:2] == '-d':
cmd = 'CWD'
if file[2:]:
cmd = cmd + ' ' + file[2:]
resp = ftp.sendcmd(cmd)
continue
if file == '-p':
ftp.set_pasv(not (ftp.passiveserver))
continue
ftp.retrbinary('RETR ' + file, sys.stdout.write, 1024)
ftp.quit()
if __name__ == '__main__':
test()