diff options
Diffstat (limited to 'Lib/ftplib.py')
| -rw-r--r-- | Lib/ftplib.py | 107 |
1 files changed, 63 insertions, 44 deletions
diff --git a/Lib/ftplib.py b/Lib/ftplib.py index 8e53023..18887a6 100644 --- a/Lib/ftplib.py +++ b/Lib/ftplib.py @@ -100,14 +100,15 @@ class FTP: file = None welcome = None passiveserver = 1 - encoding = "latin1" + encoding = "latin-1" # Initialization method (called by class instantiation). # Initialize host to localhost, port to standard ftp port # Optional arguments are host (for connect()), # and user, passwd, acct (for login()) def __init__(self, host='', user='', passwd='', acct='', - timeout=_GLOBAL_DEFAULT_TIMEOUT): + timeout=_GLOBAL_DEFAULT_TIMEOUT, source_address=None): + self.source_address = source_address self.timeout = timeout if host: self.connect(host) @@ -128,10 +129,12 @@ class FTP: if self.sock is not None: self.close() - def connect(self, host='', port=0, timeout=-999): + def connect(self, host='', port=0, timeout=-999, source_address=None): '''Connect to host. Arguments are: - host: hostname to connect to (string, default previous host) - port: port to connect to (integer, default previous port) + - source_address: a 2-tuple (host, port) for the socket to bind + to as its source address before connecting. ''' if host != '': self.host = host @@ -139,7 +142,10 @@ class FTP: self.port = port if timeout != -999: self.timeout = timeout - self.sock = socket.create_connection((self.host, self.port), self.timeout) + if source_address is not None: + self.source_address = source_address + self.sock = socket.create_connection((self.host, self.port), self.timeout, + source_address=self.source_address) self.af = self.sock.family self.file = self.sock.makefile('r', encoding=self.encoding) self.welcome = self.getresp() @@ -169,10 +175,8 @@ class FTP: # Internal: "sanitize" a string for printing 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 + if s[:5] in {'pass ', 'PASS '}: + i = len(s.rstrip('\r\n')) s = s[:5] + '*'*(i-5) + s[i:] return repr(s) @@ -335,7 +339,8 @@ class FTP: size = None if self.passiveserver: host, port = self.makepasv() - conn = socket.create_connection((host, port), self.timeout) + conn = socket.create_connection((host, port), self.timeout, + source_address=self.source_address) try: if rest is not None: self.sendcmd("REST %s" % rest) @@ -354,8 +359,7 @@ class FTP: conn.close() raise else: - sock = self.makeport() - try: + with self.makeport() as sock: if rest is not None: self.sendcmd("REST %s" % rest) resp = self.sendcmd(cmd) @@ -367,8 +371,6 @@ class FTP: conn, sockaddr = sock.accept() if self.timeout is not _GLOBAL_DEFAULT_TIMEOUT: conn.settimeout(self.timeout) - finally: - sock.close() if resp[:3] == '150': # this is conditional in case we received a 125 size = parse150(resp) @@ -426,7 +428,7 @@ class FTP: """Retrieve data in line mode. A new port is created for you. Args: - cmd: A RETR, LIST, NLST, or MLSD command. + cmd: A RETR, LIST, or NLST command. callback: An optional single parameter callable that is called for each line with the trailing CRLF stripped. [default: print_line()] @@ -527,6 +529,34 @@ class FTP: cmd = cmd + (' ' + arg) self.retrlines(cmd, func) + def mlsd(self, path="", facts=[]): + '''List a directory in a standardized format by using MLSD + command (RFC-3659). If path is omitted the current directory + is assumed. "facts" is a list of strings representing the type + of information desired (e.g. ["type", "size", "perm"]). + + Return a generator object yielding a tuple of two elements + for every file found in path. + First element is the file name, the second one is a dictionary + including a variable number of "facts" depending on the server + and whether "facts" argument has been provided. + ''' + if facts: + self.sendcmd("OPTS MLST " + ";".join(facts) + ";") + if path: + cmd = "MLSD %s" % path + else: + cmd = "MLSD" + lines = [] + self.retrlines(cmd, lines.append) + for line in lines: + facts_found, _, name = line.rstrip(CRLF).partition(' ') + entry = {} + for fact in facts_found[:-1].split(";"): + key, _, value = fact.partition("=") + entry[key.lower()] = value + yield (name, entry) + def rename(self, fromname, toname): '''Rename a file.''' resp = self.sendcmd('RNFR ' + fromname) @@ -561,10 +591,7 @@ class FTP: resp = self.sendcmd('SIZE ' + filename) if resp[:3] == '213': s = resp[3:].strip() - try: - return int(s) - except (OverflowError, ValueError): - return int(s) + return int(s) def mkd(self, dirname): '''Make a directory, return its full pathname.''' @@ -596,11 +623,11 @@ class FTP: def close(self): '''Close the connection without assuming anything about it.''' - if self.file: + if self.file is not None: self.file.close() + if self.sock is not None: self.sock.close() - self.file = self.sock = None - + self.file = self.sock = None try: import ssl @@ -644,7 +671,7 @@ else: def __init__(self, host='', user='', passwd='', acct='', keyfile=None, certfile=None, context=None, - timeout=_GLOBAL_DEFAULT_TIMEOUT): + timeout=_GLOBAL_DEFAULT_TIMEOUT, source_address=None): if context is not None and keyfile is not None: raise ValueError("context and keyfile arguments are mutually " "exclusive") @@ -655,7 +682,7 @@ else: self.certfile = certfile self.context = context self._prot_p = False - FTP.__init__(self, host, user, passwd, acct, timeout) + FTP.__init__(self, host, user, passwd, acct, timeout, source_address) def login(self, user='', passwd='', acct='', secure=True): if secure and not isinstance(self.sock, ssl.SSLSocket): @@ -679,6 +706,14 @@ else: self.file = self.sock.makefile(mode='r', encoding=self.encoding) return resp + def ccc(self): + '''Switch back to a clear-text control connection.''' + if not isinstance(self.sock, ssl.SSLSocket): + raise ValueError("not using TLS") + resp = self.voidcmd('CCC') + self.sock = self.sock.unwrap() + return resp + def prot_p(self): '''Set up secure data connection.''' # PROT defines whether or not the data channel is to be protected. @@ -715,8 +750,7 @@ else: def retrbinary(self, cmd, callback, blocksize=8192, rest=None): self.voidcmd('TYPE I') - conn = self.transfercmd(cmd, rest) - try: + with self.transfercmd(cmd, rest) as conn: while 1: data = conn.recv(blocksize) if not data: @@ -725,8 +759,6 @@ else: # shutdown ssl layer if isinstance(conn, ssl.SSLSocket): conn.unwrap() - finally: - conn.close() return self.voidresp() def retrlines(self, cmd, callback = None): @@ -734,7 +766,7 @@ else: resp = self.sendcmd('TYPE A') conn = self.transfercmd(cmd) fp = conn.makefile('r', encoding=self.encoding) - try: + with fp, conn: while 1: line = fp.readline() if self.debugging > 2: print('*retr*', repr(line)) @@ -748,15 +780,11 @@ else: # shutdown ssl layer if isinstance(conn, ssl.SSLSocket): conn.unwrap() - finally: - fp.close() - conn.close() return self.voidresp() def storbinary(self, cmd, fp, blocksize=8192, callback=None, rest=None): self.voidcmd('TYPE I') - conn = self.transfercmd(cmd, rest) - try: + with self.transfercmd(cmd, rest) as conn: while 1: buf = fp.read(blocksize) if not buf: break @@ -765,14 +793,11 @@ else: # shutdown ssl layer if isinstance(conn, ssl.SSLSocket): conn.unwrap() - finally: - conn.close() return self.voidresp() def storlines(self, cmd, fp, callback=None): self.voidcmd('TYPE A') - conn = self.transfercmd(cmd) - try: + with self.transfercmd(cmd) as conn: while 1: buf = fp.readline() if not buf: break @@ -784,8 +809,6 @@ else: # shutdown ssl layer if isinstance(conn, ssl.SSLSocket): conn.unwrap() - finally: - conn.close() return self.voidresp() def abort(self): @@ -818,11 +841,7 @@ def parse150(resp): m = _150_re.match(resp) if not m: return None - s = m.group(1) - try: - return int(s) - except (OverflowError, ValueError): - return int(s) + return int(m.group(1)) _227_re = None |