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authorKevin Lange <kevin.lange@dakko.us>2011-12-03 19:00:34 -0600
committerKevin Lange <kevin.lange@dakko.us>2011-12-03 19:00:34 -0600
commited1684e64e2c1702898411725bb2f1169984884e (patch)
tree4fc88e78e1949d2de3b231e0d11ca05f19993549 /src/telnetsrvlib.py
parent2f5c5f61289d40610c2f9ab6b7eea706af05dc69 (diff)
downloadnyancat-ed1684e64e2c1702898411725bb2f1169984884e.tar.gz
Get rid of all of that nasty python
Diffstat (limited to '')
-rw-r--r--src/telnetsrvlib.py776
1 files changed, 0 insertions, 776 deletions
diff --git a/src/telnetsrvlib.py b/src/telnetsrvlib.py
deleted file mode 100644
index 14b9b2f..0000000
--- a/src/telnetsrvlib.py
+++ /dev/null
@@ -1,776 +0,0 @@
-#!/usr/bin/python
-"""TELNET server class
-
-Based on the telnet client in telnetlib.py
-
-Presents a command line interface to the telnet client.
-Various settings can affect the operation of the server:
-
- authCallback = Reference to authentication function. If
- there is none, no un/pw is requested. Should
- raise an exception if authentication fails
- Default: None
- authNeedUser = Should a username be requested?
- Default: False
- authNeedPass = Should a password be requested?
- Default: False
- COMMANDS = Dictionary of supported commands
- Key = command (Must be upper case)
- Value = List of (function, help text)
- Function.__doc__ should be long help
- Function.aliases may be a list of alternative spellings
-"""
-
-#from telnetlib import IAC, WILL, WONT, DO, DONT, ECHO, SGA, Telnet
-import threading
-import SocketServer
-import socket
-import time
-import sys
-import traceback
-import curses.ascii
-import curses.has_key
-import curses
-import logging
-import re
-if not hasattr(socket, 'SHUT_RDWR'):
- socket.SHUT_RDWR = 2
-
-__all__ = ["TelnetHandler", "TelnetCLIHandler"]
-
-IAC = chr(255) # "Interpret As Command"
-DONT = chr(254)
-DO = chr(253)
-WONT = chr(252)
-WILL = chr(251)
-theNULL = chr(0)
-
-SE = chr(240) # Subnegotiation End
-NOP = chr(241) # No Operation
-DM = chr(242) # Data Mark
-BRK = chr(243) # Break
-IP = chr(244) # Interrupt process
-AO = chr(245) # Abort output
-AYT = chr(246) # Are You There
-EC = chr(247) # Erase Character
-EL = chr(248) # Erase Line
-GA = chr(249) # Go Ahead
-SB = chr(250) # Subnegotiation Begin
-
-BINARY = chr(0) # 8-bit data path
-ECHO = chr(1) # echo
-RCP = chr(2) # prepare to reconnect
-SGA = chr(3) # suppress go ahead
-NAMS = chr(4) # approximate message size
-STATUS = chr(5) # give status
-TM = chr(6) # timing mark
-RCTE = chr(7) # remote controlled transmission and echo
-NAOL = chr(8) # negotiate about output line width
-NAOP = chr(9) # negotiate about output page size
-NAOCRD = chr(10) # negotiate about CR disposition
-NAOHTS = chr(11) # negotiate about horizontal tabstops
-NAOHTD = chr(12) # negotiate about horizontal tab disposition
-NAOFFD = chr(13) # negotiate about formfeed disposition
-NAOVTS = chr(14) # negotiate about vertical tab stops
-NAOVTD = chr(15) # negotiate about vertical tab disposition
-NAOLFD = chr(16) # negotiate about output LF disposition
-XASCII = chr(17) # extended ascii character set
-LOGOUT = chr(18) # force logout
-BM = chr(19) # byte macro
-DET = chr(20) # data entry terminal
-SUPDUP = chr(21) # supdup protocol
-SUPDUPOUTPUT = chr(22) # supdup output
-SNDLOC = chr(23) # send location
-TTYPE = chr(24) # terminal type
-EOR = chr(25) # end or record
-TUID = chr(26) # TACACS user identification
-OUTMRK = chr(27) # output marking
-TTYLOC = chr(28) # terminal location number
-VT3270REGIME = chr(29) # 3270 regime
-X3PAD = chr(30) # X.3 PAD
-NAWS = chr(31) # window size
-TSPEED = chr(32) # terminal speed
-LFLOW = chr(33) # remote flow control
-LINEMODE = chr(34) # Linemode option
-XDISPLOC = chr(35) # X Display Location
-OLD_ENVIRON = chr(36) # Old - Environment variables
-AUTHENTICATION = chr(37) # Authenticate
-ENCRYPT = chr(38) # Encryption option
-NEW_ENVIRON = chr(39) # New - Environment variables
-# the following ones come from
-# http://www.iana.org/assignments/telnet-options
-# Unfortunately, that document does not assign identifiers
-# to all of them, so we are making them up
-TN3270E = chr(40) # TN3270E
-XAUTH = chr(41) # XAUTH
-CHARSET = chr(42) # CHARSET
-RSP = chr(43) # Telnet Remote Serial Port
-COM_PORT_OPTION = chr(44) # Com Port Control Option
-SUPPRESS_LOCAL_ECHO = chr(45) # Telnet Suppress Local Echo
-TLS = chr(46) # Telnet Start TLS
-KERMIT = chr(47) # KERMIT
-SEND_URL = chr(48) # SEND-URL
-FORWARD_X = chr(49) # FORWARD_X
-PRAGMA_LOGON = chr(138) # TELOPT PRAGMA LOGON
-SSPI_LOGON = chr(139) # TELOPT SSPI LOGON
-PRAGMA_HEARTBEAT = chr(140) # TELOPT PRAGMA HEARTBEAT
-EXOPL = chr(255) # Extended-Options-List
-NOOPT = chr(0)
-
-#Codes used in SB SE data stream for terminal type negotiation
-IS = chr(0)
-SEND = chr(1)
-
-CMDS = {
- WILL: 'WILL',
- WONT: 'WONT',
- DO: 'DO',
- DONT: 'DONT',
- SE: 'Subnegotiation End',
- NOP: 'No Operation',
- DM: 'Data Mark',
- BRK: 'Break',
- IP: 'Interrupt process',
- AO: 'Abort output',
- AYT: 'Are You There',
- EC: 'Erase Character',
- EL: 'Erase Line',
- GA: 'Go Ahead',
- SB: 'Subnegotiation Begin',
- BINARY: 'Binary',
- ECHO: 'Echo',
- RCP: 'Prepare to reconnect',
- SGA: 'Suppress Go-Ahead',
- NAMS: 'Approximate message size',
- STATUS: 'Give status',
- TM: 'Timing mark',
- RCTE: 'Remote controlled transmission and echo',
- NAOL: 'Negotiate about output line width',
- NAOP: 'Negotiate about output page size',
- NAOCRD: 'Negotiate about CR disposition',
- NAOHTS: 'Negotiate about horizontal tabstops',
- NAOHTD: 'Negotiate about horizontal tab disposition',
- NAOFFD: 'Negotiate about formfeed disposition',
- NAOVTS: 'Negotiate about vertical tab stops',
- NAOVTD: 'Negotiate about vertical tab disposition',
- NAOLFD: 'Negotiate about output LF disposition',
- XASCII: 'Extended ascii character set',
- LOGOUT: 'Force logout',
- BM: 'Byte macro',
- DET: 'Data entry terminal',
- SUPDUP: 'Supdup protocol',
- SUPDUPOUTPUT: 'Supdup output',
- SNDLOC: 'Send location',
- TTYPE: 'Terminal type',
- EOR: 'End or record',
- TUID: 'TACACS user identification',
- OUTMRK: 'Output marking',
- TTYLOC: 'Terminal location number',
- VT3270REGIME: '3270 regime',
- X3PAD: 'X.3 PAD',
- NAWS: 'Window size',
- TSPEED: 'Terminal speed',
- LFLOW: 'Remote flow control',
- LINEMODE: 'Linemode option',
- XDISPLOC: 'X Display Location',
- OLD_ENVIRON: 'Old - Environment variables',
- AUTHENTICATION: 'Authenticate',
- ENCRYPT: 'Encryption option',
- NEW_ENVIRON: 'New - Environment variables',
-}
-
-class TelnetHandler(SocketServer.BaseRequestHandler):
- "A telnet server based on the client in telnetlib"
-
- # What I am prepared to do?
- DOACK = {
- ECHO: WILL,
- SGA: WILL,
- NEW_ENVIRON: WONT,
- }
- # What do I want the client to do?
- WILLACK = {
- ECHO: DONT,
- SGA: DO,
- NAWS: DONT,
- TTYPE: DO,
- LINEMODE: DONT,
- NEW_ENVIRON: DO,
- }
- # Default terminal type - used if client doesn't tell us its termtype
- TERM = "ansi"
- # Keycode to name mapping - used to decide which keys to query
- KEYS = { # Key escape sequences
- curses.KEY_UP: 'Up', # Cursor up
- curses.KEY_DOWN: 'Down', # Cursor down
- curses.KEY_LEFT: 'Left', # Cursor left
- curses.KEY_RIGHT: 'Right', # Cursor right
- curses.KEY_DC: 'Delete', # Delete right
- curses.KEY_BACKSPACE: 'Backspace', # Delete left
- }
- # Reverse mapping of KEYS - used for cooking key codes
- ESCSEQ = {
- }
- # Terminal output escape sequences
- CODES = {
- 'DEOL': '', # Delete to end of line
- 'DEL': '', # Delete and close up
- 'INS': '', # Insert space
- 'CSRLEFT': '', # Move cursor left 1 space
- 'CSRRIGHT': '', # Move cursor right 1 space
- }
- # What prompt to display
- PROMPT = "Telnet Server> "
- # The function to call to verify authentication data
- authCallback = None
- # Does authCallback want a username?
- authNeedUser = False
- # Does authCallback want a password?
- authNeedPass = False
-
-# --------------------------- Environment Setup ----------------------------
-
- def __init__(self, request, client_address, server):
- """Constructor.
-
- When called without arguments, create an unconnected instance.
- With a hostname argument, it connects the instance; a port
- number is optional.
- """
- # Am I doing the echoing?
- self.DOECHO = True
- # What opts have I sent DO/DONT for and what did I send?
- self.DOOPTS = {}
- # What opts have I sent WILL/WONT for and what did I send?
- self.WILLOPTS = {}
- # What commands does this CLI support
- self.COMMANDS = {}
- self.sock = None # TCP socket
- self.rawq = '' # Raw input string
- self.cookedq = [] # This is the cooked input stream (list of charcodes)
- self.sbdataq = '' # Sub-Neg string
- self.eof = 0 # Has EOF been reached?
- self.iacseq = '' # Buffer for IAC sequence.
- self.sb = 0 # Flag for SB and SE sequence.
- self.history = [] # Command history
- self.IQUEUELOCK = threading.Lock()
- self.OQUEUELOCK = threading.Lock()
- self.RUNSHELL = True
- # A little magic - Everything called cmdXXX is a command
- for k in dir(self):
- if k[:3] == 'cmd':
- name = k[3:]
- method = getattr(self, k)
- self.COMMANDS[name] = method
- for alias in getattr(method, "aliases", []):
- self.COMMANDS[alias] = self.COMMANDS[name]
- SocketServer.BaseRequestHandler.__init__(self, request, client_address, server)
-
- def setterm(self, term):
- "Set the curses structures for this terminal"
- logging.debug("Setting termtype to %s" % (term, ))
- curses.setupterm(term) # This will raise if the termtype is not supported
- self.TERM = term
- self.ESCSEQ = {}
- for k in self.KEYS.keys():
- str = curses.tigetstr(curses.has_key._capability_names[k])
- if str:
- self.ESCSEQ[str] = k
- self.CODES['DEOL'] = curses.tigetstr('el')
- self.CODES['DEL'] = curses.tigetstr('dch1')
- self.CODES['INS'] = curses.tigetstr('ich1')
- self.CODES['CSRLEFT'] = curses.tigetstr('cub1')
- self.CODES['CSRRIGHT'] = curses.tigetstr('cuf1')
-
- def setup(self):
- "Connect incoming connection to a telnet session"
- self.setterm(self.TERM)
- self.sock = self.request._sock
- for k in self.DOACK.keys():
- self.sendcommand(self.DOACK[k], k)
- for k in self.WILLACK.keys():
- self.sendcommand(self.WILLACK[k], k)
- self.thread_ic = threading.Thread(target=self.inputcooker)
- self.thread_ic.setDaemon(True)
- self.thread_ic.start()
- # Sleep for 0.5 second to allow options negotiation
- time.sleep(0.5)
-
- def finish(self):
- "End this session"
- self.sock.shutdown(socket.SHUT_RDWR)
-
-# ------------------------- Telnet Options Engine --------------------------
-
- def options_handler(self, sock, cmd, opt):
- "Negotiate options"
-# if CMDS.has_key(cmd):
-# cmdtxt = CMDS[cmd]
-# else:
-# cmdtxt = "cmd:%d" % ord(cmd)
-# if cmd in [WILL, WONT, DO, DONT]:
-# if CMDS.has_key(opt):
-# opttxt = CMDS[opt]
-# else:
-# opttxt = "opt:%d" % ord(opt)
-# else:
-# opttxt = ""
-# logging.debug("OPTION: %s %s" % (cmdtxt, opttxt, ))
- if cmd == NOP:
- self.sendcommand(NOP)
- elif cmd == WILL or cmd == WONT:
- if self.WILLACK.has_key(opt):
- self.sendcommand(self.WILLACK[opt], opt)
- else:
- self.sendcommand(DONT, opt)
- if cmd == WILL and opt == TTYPE:
- self.writecooked(IAC + SB + TTYPE + SEND + IAC + SE)
- elif cmd == DO or cmd == DONT:
- if self.DOACK.has_key(opt):
- self.sendcommand(self.DOACK[opt], opt)
- else:
- self.sendcommand(WONT, opt)
- if opt == ECHO:
- self.DOECHO = (cmd == DO)
- elif cmd == SE:
- subreq = self.read_sb_data()
- if subreq[0] == TTYPE and subreq[1] == IS:
- try:
- self.setterm(subreq[2:])
- except:
- logging.debug("Terminal type not known")
- elif cmd == SB:
- pass
- else:
- logging.debug("Unhandled option: %s %s" % (cmdtxt, opttxt, ))
-
- def sendcommand(self, cmd, opt=None):
- "Send a telnet command (IAC)"
-# if CMDS.has_key(cmd):
-# cmdtxt = CMDS[cmd]
-# else:
-# cmdtxt = "cmd:%d" % ord(cmd)
-# if opt == None:
-# opttxt = ''
-# else:
-# if CMDS.has_key(opt):
-# opttxt = CMDS[opt]
-# else:
-# opttxt = "opt:%d" % ord(opt)
- if cmd in [DO, DONT]:
- if not self.DOOPTS.has_key(opt):
- self.DOOPTS[opt] = None
- if (((cmd == DO) and (self.DOOPTS[opt] != True))
- or ((cmd == DONT) and (self.DOOPTS[opt] != False))):
-# logging.debug("Sending %s %s" % (cmdtxt, opttxt, ))
- self.DOOPTS[opt] = (cmd == DO)
- self.writecooked(IAC + cmd + opt)
-# else:
-# logging.debug("Not resending %s %s" % (cmdtxt, opttxt, ))
- elif cmd in [WILL, WONT]:
- if not self.WILLOPTS.has_key(opt):
- self.WILLOPTS[opt] = ''
- if (((cmd == WILL) and (self.WILLOPTS[opt] != True))
- or ((cmd == WONT) and (self.WILLOPTS[opt] != False))):
-# logging.debug("Sending %s %s" % (cmdtxt, opttxt, ))
- self.WILLOPTS[opt] = (cmd == WILL)
- self.writecooked(IAC + cmd + opt)
-# else:
-# logging.debug("Not resending %s %s" % (cmdtxt, opttxt, ))
- else:
- self.writecooked(IAC + cmd)
-
- def read_sb_data(self):
- """Return any data available in the SB ... SE queue.
-
- Return '' if no SB ... SE available. Should only be called
- after seeing a SB or SE command. When a new SB command is
- found, old unread SB data will be discarded. Don't block.
-
- """
- buf = self.sbdataq
- self.sbdataq = ''
- return buf
-
-# ---------------------------- Input Functions -----------------------------
-
- def _readline_echo(self, char, echo):
- """Echo a recieved character, move cursor etc..."""
- if echo == True or (echo == None and self.DOECHO == True):
- self.write(char)
-
- def readline(self, echo=None):
- """Return a line of text, including the terminating LF
- If echo is true always echo, if echo is false never echo
- If echo is None follow the negotiated setting.
- """
- line = []
- insptr = 0
- histptr = len(self.history)
- while True:
- c = self.getc(block=True)
- if c == theNULL:
- continue
- elif c == curses.KEY_LEFT:
- if insptr > 0:
- insptr = insptr - 1
- self._readline_echo(self.CODES['CSRLEFT'], echo)
- else:
- self._readline_echo(chr(7), echo)
- continue
- elif c == curses.KEY_RIGHT:
- if insptr < len(line):
- insptr = insptr + 1
- self._readline_echo(self.CODES['CSRRIGHT'], echo)
- else:
- self._readline_echo(chr(7), echo)
- continue
- elif c == curses.KEY_UP or c == curses.KEY_DOWN:
- if c == curses.KEY_UP:
- if histptr > 0:
- histptr = histptr - 1
- else:
- self._readline_echo(chr(7), echo)
- continue
- elif c == curses.KEY_DOWN:
- if histptr < len(self.history):
- histptr = histptr + 1
- else:
- self._readline_echo(chr(7), echo)
- continue
- line = []
- if histptr < len(self.history):
- line.extend(self.history[histptr])
- for char in range(insptr):
- self._readline_echo(self.CODES['CSRLEFT'], echo)
- self._readline_echo(self.CODES['DEOL'], echo)
- self._readline_echo(''.join(line), echo)
- insptr = len(line)
- continue
- elif c == chr(3):
- self._readline_echo('\n' + curses.ascii.unctrl(c) + ' ABORT\n', echo)
- return ''
- elif c == chr(4):
- if len(line) > 0:
- self._readline_echo('\n' + curses.ascii.unctrl(c) + ' ABORT (QUIT)\n', echo)
- return ''
- self._readline_echo('\n' + curses.ascii.unctrl(c) + ' QUIT\n', echo)
- return 'QUIT'
- elif c == chr(10):
- self._readline_echo(c, echo)
- if echo == True or (echo == None and self.DOECHO == True):
- self.history.append(line)
- return ''.join(line)
- elif c == curses.KEY_BACKSPACE or c == chr(127) or c == chr(8):
- if insptr > 0:
- self._readline_echo(self.CODES['CSRLEFT'] + self.CODES['DEL'], echo)
- insptr = insptr - 1
- del line[insptr]
- else:
- self._readline_echo(chr(7), echo)
- continue
- elif c == curses.KEY_DC:
- if insptr < len(line):
- self._readline_echo(self.CODES['DEL'], echo)
- del line[insptr]
- else:
- self._readline_echo(chr(7), echo)
- continue
- else:
- if ord(c) < 32:
- c = curses.ascii.unctrl(c)
- self._readline_echo(c, echo)
- line[insptr:insptr] = c
- insptr = insptr + len(c)
-
- def getc(self, block=True):
- """Return one character from the input queue"""
- if not block:
- if not len(self.cookedq):
- return ''
- while not len(self.cookedq):
- time.sleep(0.05)
- self.IQUEUELOCK.acquire()
- ret = self.cookedq[0]
- self.cookedq = self.cookedq[1:]
- self.IQUEUELOCK.release()
- return ret
-
-# --------------------------- Output Functions -----------------------------
-
- def writeline(self, text):
- """Send a packet with line ending."""
- self.write(text+chr(10))
-
- def write(self, text):
- """Send a packet to the socket. This function cooks output."""
- text = text.replace(IAC, IAC+IAC)
- text = text.replace(chr(10), chr(13)+chr(10))
- self.writecooked(text)
-
- def writecooked(self, text):
- """Put data directly into the output queue (bypass output cooker)"""
- self.OQUEUELOCK.acquire()
- self.sock.sendall(text)
- self.OQUEUELOCK.release()
-
-# ------------------------------- Input Cooker -----------------------------
-
- def _inputcooker_getc(self, block=True):
- """Get one character from the raw queue. Optionally blocking.
- Raise EOFError on end of stream. SHOULD ONLY BE CALLED FROM THE
- INPUT COOKER."""
- if self.rawq:
- ret = self.rawq[0]
- self.rawq = self.rawq[1:]
- return ret
- if not block:
- if select.select([self.sock.fileno()], [], [], 0) == ([], [], []):
- return ''
- ret = self.sock.recv(20)
- self.eof = not(ret)
- self.rawq = self.rawq + ret
- if self.eof:
- raise EOFError
- return self._inputcooker_getc(block)
-
- def _inputcooker_ungetc(self, char):
- """Put characters back onto the head of the rawq. SHOULD ONLY
- BE CALLED FROM THE INPUT COOKER."""
- self.rawq = char + self.rawq
-
- def _inputcooker_store(self, char):
- """Put the cooked data in the correct queue (with locking)"""
- if self.sb:
- self.sbdataq = self.sbdataq + char
- else:
- self.IQUEUELOCK.acquire()
- if type(char) in [type(()), type([]), type("")]:
- for v in char:
- self.cookedq.append(v)
- else:
- self.cookedq.append(char)
- self.IQUEUELOCK.release()
-
- def inputcooker(self):
- """Input Cooker - Transfer from raw queue to cooked queue.
-
- Set self.eof when connection is closed. Don't block unless in
- the midst of an IAC sequence.
- """
- try:
- while True:
- c = self._inputcooker_getc()
- if not self.iacseq:
- if c == IAC:
- self.iacseq += c
- continue
- elif c == chr(13) and not(self.sb):
- c2 = self._inputcooker_getc(block=False)
- if c2 == theNULL or c2 == '':
- c = chr(10)
- elif c2 == chr(10):
- c = c2
- else:
- self._inputcooker_ungetc(c2)
- c = chr(10)
- elif c in [x[0] for x in self.ESCSEQ.keys()]:
- 'Looks like the begining of a key sequence'
- codes = c
- for keyseq in self.ESCSEQ.keys():
- if len(keyseq) == 0:
- continue
- while codes == keyseq[:len(codes)] and len(codes) <= keyseq:
- if codes == keyseq:
- c = self.ESCSEQ[keyseq]
- break
- codes = codes + self._inputcooker_getc()
- if codes == keyseq:
- break
- self._inputcooker_ungetc(codes[1:])
- codes = codes[0]
- self._inputcooker_store(c)
- elif len(self.iacseq) == 1:
- 'IAC: IAC CMD [OPTION only for WILL/WONT/DO/DONT]'
- if c in (DO, DONT, WILL, WONT):
- self.iacseq += c
- continue
- self.iacseq = ''
- if c == IAC:
- self._inputcooker_store(c)
- else:
- if c == SB: # SB ... SE start.
- self.sb = 1
- self.sbdataq = ''
- # continue
- elif c == SE: # SB ... SE end.
- self.sb = 0
- # Callback is supposed to look into
- # the sbdataq
- self.options_handler(self.sock, c, NOOPT)
- elif len(self.iacseq) == 2:
- cmd = self.iacseq[1]
- self.iacseq = ''
- if cmd in (DO, DONT, WILL, WONT):
- self.options_handler(self.sock, cmd, c)
- except EOFError:
- pass
-
-# ------------------------------- Basic Commands ---------------------------
-
-# Format of docstrings for command methods:
-# Line 0: Command paramater(s) if any. (Can be blank line)
-# Line 1: Short descriptive text. (Mandatory)
-# Line 2+: Long descriptive text. (Can be blank line)
-
- def cmdHELP(self, params):
- """[<command>]
- Display help
- Display either brief help on all commands, or detailed
- help on a single command passed as a parameter.
- """
- if params:
- cmd = params[0].upper()
- if self.COMMANDS.has_key(cmd):
- method = self.COMMANDS[cmd]
- doc = method.__doc__.split("\n")
- docp = doc[0].strip()
- docl = '\n'.join(doc[2:]).replace("\n\t\t", " ").replace("\t", "").strip()
- if len(docl) < 4:
- docl = doc[1].strip()
- self.writeline(
- "%s %s\n\n%s" % (
- cmd,
- docp,
- docl,
- )
- )
- return
- else:
- self.writeline("Command '%s' not known" % cmd)
- else:
- self.writeline("Help on built in commands\n")
- keys = self.COMMANDS.keys()
- keys.sort()
- for cmd in keys:
- method = self.COMMANDS[cmd]
- doc = method.__doc__.split("\n")
- docp = doc[0].strip()
- docs = doc[1].strip()
- if len(docp) > 0:
- docps = "%s - %s" % (docp, docs, )
- else:
- docps = "- %s" % (docs, )
- self.writeline(
- "%s %s" % (
- cmd,
- docps,
- )
- )
- cmdHELP.aliases = ['?']
-
- def cmdEXIT(self, params):
- """
- Exit the command shell
- """
- self.RUNSHELL = False
- self.writeline("Goodbye")
- cmdEXIT.aliases = ['QUIT', 'BYE', 'LOGOUT']
-
- def cmdDEBUG(self, params):
- """
- Display some debugging data
- """
- for (v,k) in self.ESCSEQ.items():
- line = '%-10s : ' % (self.KEYS[k], )
- for c in v:
- if ord(c)<32 or ord(c)>126:
- line = line + curses.ascii.unctrl(c)
- else:
- line = line + c
- self.writeline(line)
-
- def cmdHISTORY(self, params):
- """
- Display the command history
- """
- cnt = 0
- self.writeline('Command history\n')
- for line in self.history:
- cnt = cnt + 1
- self.writeline("%-5d : %s" % (cnt, ''.join(line)))
-
-# ----------------------- Command Line Processor Engine --------------------
-
- def handleException(self, exc_type, exc_param, exc_tb):
- "Exception handler (False to abort)"
- self.writeline(traceback.format_exception_only(exc_type, exc_param)[-1])
- return True
-
- def handle(self):
- "The actual service to which the user has connected."
- username = None
- password = None
- if self.authCallback:
- if self.authNeedUser:
- if self.DOECHO:
- self.write("Username: ")
- username = self.readline()
- if self.authNeedPass:
- if self.DOECHO:
- self.write("Password: ")
- password = self.readline(echo=False)
- if self.DOECHO:
- self.write("\n")
- try:
- self.authCallback(username, password)
- except:
- return
- while self.RUNSHELL:
- if self.DOECHO:
- self.write(self.PROMPT)
- cmdlist = [item.strip() for item in self.readline().split()]
- idx = 0
- while idx < (len(cmdlist) - 1):
- if cmdlist[idx][0] in ["'", '"']:
- cmdlist[idx] = cmdlist[idx] + " " + cmdlist.pop(idx+1)
- if cmdlist[idx][0] != cmdlist[idx][-1]:
- continue
- cmdlist[idx] = cmdlist[idx][1:-1]
- idx = idx + 1
- if cmdlist:
- cmd = cmdlist[0].upper()
- params = cmdlist[1:]
- if self.COMMANDS.has_key(cmd):
- try:
- self.COMMANDS[cmd](params)
- except:
- (t, p, tb) = sys.exc_info()
- if self.handleException(t, p, tb):
- break
- else:
- self.write("Unknown command '%s'\n" % cmd)
- logging.debug("Exiting handler")
-
-if __name__ == '__main__':
- "Testing - Accept a single connection"
- class TNS(SocketServer.TCPServer):
- allow_reuse_address = True
-
- class TNH(TelnetHandler):
- def cmdECHO(self, params):
- """ [<arg> ...]
- Echo parameters
- Echo command line parameters back to user, one per line.
- """
- self.writeline("Parameters:")
- for item in params:
- self.writeline("\t%s" % item)
-
- logging.getLogger('').setLevel(logging.DEBUG)
-
- tns = TNS(("0.0.0.0", 23), TNH)
- tns.serve_forever()
-
-# vim: set syntax=python ai showmatch:
-