Update prebuilt Clang to r416183b from Android.
https://android.googlesource.com/platform/prebuilts/clang/host/
linux-x86/+/06a71ddac05c22edb2d10b590e1769b3f8619bef
clang 12.0.5 (based on r416183b) from build 7284624.
Change-Id: I277a316abcf47307562d8b748b84870f31a72866
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/linux-x64/clang/python3/lib/python3.9/telnetlib.py b/linux-x64/clang/python3/lib/python3.9/telnetlib.py
new file mode 100644
index 0000000..8ce053e
--- /dev/null
+++ b/linux-x64/clang/python3/lib/python3.9/telnetlib.py
@@ -0,0 +1,677 @@
+r"""TELNET client class.
+
+Based on RFC 854: TELNET Protocol Specification, by J. Postel and
+J. Reynolds
+
+Example:
+
+>>> from telnetlib import Telnet
+>>> tn = Telnet('www.python.org', 79) # connect to finger port
+>>> tn.write(b'guido\r\n')
+>>> print(tn.read_all())
+Login Name TTY Idle When Where
+guido Guido van Rossum pts/2 <Dec 2 11:10> snag.cnri.reston..
+
+>>>
+
+Note that read_all() won't read until eof -- it just reads some data
+-- but it guarantees to read at least one byte unless EOF is hit.
+
+It is possible to pass a Telnet object to a selector in order to wait until
+more data is available. Note that in this case, read_eager() may return b''
+even if there was data on the socket, because the protocol negotiation may have
+eaten the data. This is why EOFError is needed in some cases to distinguish
+between "no data" and "connection closed" (since the socket also appears ready
+for reading when it is closed).
+
+To do:
+- option negotiation
+- timeout should be intrinsic to the connection object instead of an
+ option on one of the read calls only
+
+"""
+
+
+# Imported modules
+import sys
+import socket
+import selectors
+from time import monotonic as _time
+
+__all__ = ["Telnet"]
+
+# Tunable parameters
+DEBUGLEVEL = 0
+
+# Telnet protocol defaults
+TELNET_PORT = 23
+
+# Telnet protocol characters (don't change)
+IAC = bytes([255]) # "Interpret As Command"
+DONT = bytes([254])
+DO = bytes([253])
+WONT = bytes([252])
+WILL = bytes([251])
+theNULL = bytes([0])
+
+SE = bytes([240]) # Subnegotiation End
+NOP = bytes([241]) # No Operation
+DM = bytes([242]) # Data Mark
+BRK = bytes([243]) # Break
+IP = bytes([244]) # Interrupt process
+AO = bytes([245]) # Abort output
+AYT = bytes([246]) # Are You There
+EC = bytes([247]) # Erase Character
+EL = bytes([248]) # Erase Line
+GA = bytes([249]) # Go Ahead
+SB = bytes([250]) # Subnegotiation Begin
+
+
+# Telnet protocol options code (don't change)
+# These ones all come from arpa/telnet.h
+BINARY = bytes([0]) # 8-bit data path
+ECHO = bytes([1]) # echo
+RCP = bytes([2]) # prepare to reconnect
+SGA = bytes([3]) # suppress go ahead
+NAMS = bytes([4]) # approximate message size
+STATUS = bytes([5]) # give status
+TM = bytes([6]) # timing mark
+RCTE = bytes([7]) # remote controlled transmission and echo
+NAOL = bytes([8]) # negotiate about output line width
+NAOP = bytes([9]) # negotiate about output page size
+NAOCRD = bytes([10]) # negotiate about CR disposition
+NAOHTS = bytes([11]) # negotiate about horizontal tabstops
+NAOHTD = bytes([12]) # negotiate about horizontal tab disposition
+NAOFFD = bytes([13]) # negotiate about formfeed disposition
+NAOVTS = bytes([14]) # negotiate about vertical tab stops
+NAOVTD = bytes([15]) # negotiate about vertical tab disposition
+NAOLFD = bytes([16]) # negotiate about output LF disposition
+XASCII = bytes([17]) # extended ascii character set
+LOGOUT = bytes([18]) # force logout
+BM = bytes([19]) # byte macro
+DET = bytes([20]) # data entry terminal
+SUPDUP = bytes([21]) # supdup protocol
+SUPDUPOUTPUT = bytes([22]) # supdup output
+SNDLOC = bytes([23]) # send location
+TTYPE = bytes([24]) # terminal type
+EOR = bytes([25]) # end or record
+TUID = bytes([26]) # TACACS user identification
+OUTMRK = bytes([27]) # output marking
+TTYLOC = bytes([28]) # terminal location number
+VT3270REGIME = bytes([29]) # 3270 regime
+X3PAD = bytes([30]) # X.3 PAD
+NAWS = bytes([31]) # window size
+TSPEED = bytes([32]) # terminal speed
+LFLOW = bytes([33]) # remote flow control
+LINEMODE = bytes([34]) # Linemode option
+XDISPLOC = bytes([35]) # X Display Location
+OLD_ENVIRON = bytes([36]) # Old - Environment variables
+AUTHENTICATION = bytes([37]) # Authenticate
+ENCRYPT = bytes([38]) # Encryption option
+NEW_ENVIRON = bytes([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 = bytes([40]) # TN3270E
+XAUTH = bytes([41]) # XAUTH
+CHARSET = bytes([42]) # CHARSET
+RSP = bytes([43]) # Telnet Remote Serial Port
+COM_PORT_OPTION = bytes([44]) # Com Port Control Option
+SUPPRESS_LOCAL_ECHO = bytes([45]) # Telnet Suppress Local Echo
+TLS = bytes([46]) # Telnet Start TLS
+KERMIT = bytes([47]) # KERMIT
+SEND_URL = bytes([48]) # SEND-URL
+FORWARD_X = bytes([49]) # FORWARD_X
+PRAGMA_LOGON = bytes([138]) # TELOPT PRAGMA LOGON
+SSPI_LOGON = bytes([139]) # TELOPT SSPI LOGON
+PRAGMA_HEARTBEAT = bytes([140]) # TELOPT PRAGMA HEARTBEAT
+EXOPL = bytes([255]) # Extended-Options-List
+NOOPT = bytes([0])
+
+
+# poll/select have the advantage of not requiring any extra file descriptor,
+# contrarily to epoll/kqueue (also, they require a single syscall).
+if hasattr(selectors, 'PollSelector'):
+ _TelnetSelector = selectors.PollSelector
+else:
+ _TelnetSelector = selectors.SelectSelector
+
+
+class Telnet:
+
+ """Telnet interface class.
+
+ An instance of this class represents a connection to a telnet
+ server. The instance is initially not connected; the open()
+ method must be used to establish a connection. Alternatively, the
+ host name and optional port number can be passed to the
+ constructor, too.
+
+ Don't try to reopen an already connected instance.
+
+ This class has many read_*() methods. Note that some of them
+ raise EOFError when the end of the connection is read, because
+ they can return an empty string for other reasons. See the
+ individual doc strings.
+
+ read_until(expected, [timeout])
+ Read until the expected string has been seen, or a timeout is
+ hit (default is no timeout); may block.
+
+ read_all()
+ Read all data until EOF; may block.
+
+ read_some()
+ Read at least one byte or EOF; may block.
+
+ read_very_eager()
+ Read all data available already queued or on the socket,
+ without blocking.
+
+ read_eager()
+ Read either data already queued or some data available on the
+ socket, without blocking.
+
+ read_lazy()
+ Read all data in the raw queue (processing it first), without
+ doing any socket I/O.
+
+ read_very_lazy()
+ Reads all data in the cooked queue, without doing any socket
+ I/O.
+
+ read_sb_data()
+ Reads available data between SB ... SE sequence. Don't block.
+
+ set_option_negotiation_callback(callback)
+ Each time a telnet option is read on the input flow, this callback
+ (if set) is called with the following parameters :
+ callback(telnet socket, command, option)
+ option will be chr(0) when there is no option.
+ No other action is done afterwards by telnetlib.
+
+ """
+
+ def __init__(self, host=None, port=0,
+ timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
+ """Constructor.
+
+ When called without arguments, create an unconnected instance.
+ With a hostname argument, it connects the instance; port number
+ and timeout are optional.
+ """
+ self.debuglevel = DEBUGLEVEL
+ self.host = host
+ self.port = port
+ self.timeout = timeout
+ self.sock = None
+ self.rawq = b''
+ self.irawq = 0
+ self.cookedq = b''
+ self.eof = 0
+ self.iacseq = b'' # Buffer for IAC sequence.
+ self.sb = 0 # flag for SB and SE sequence.
+ self.sbdataq = b''
+ self.option_callback = None
+ if host is not None:
+ self.open(host, port, timeout)
+
+ def open(self, host, port=0, timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
+ """Connect to a host.
+
+ The optional second argument is the port number, which
+ defaults to the standard telnet port (23).
+
+ Don't try to reopen an already connected instance.
+ """
+ self.eof = 0
+ if not port:
+ port = TELNET_PORT
+ self.host = host
+ self.port = port
+ self.timeout = timeout
+ sys.audit("telnetlib.Telnet.open", self, host, port)
+ self.sock = socket.create_connection((host, port), timeout)
+
+ def __del__(self):
+ """Destructor -- close the connection."""
+ self.close()
+
+ def msg(self, msg, *args):
+ """Print a debug message, when the debug level is > 0.
+
+ If extra arguments are present, they are substituted in the
+ message using the standard string formatting operator.
+
+ """
+ if self.debuglevel > 0:
+ print('Telnet(%s,%s):' % (self.host, self.port), end=' ')
+ if args:
+ print(msg % args)
+ else:
+ print(msg)
+
+ def set_debuglevel(self, debuglevel):
+ """Set the debug level.
+
+ The higher it is, the more debug output you get (on sys.stdout).
+
+ """
+ self.debuglevel = debuglevel
+
+ def close(self):
+ """Close the connection."""
+ sock = self.sock
+ self.sock = None
+ self.eof = True
+ self.iacseq = b''
+ self.sb = 0
+ if sock:
+ sock.close()
+
+ def get_socket(self):
+ """Return the socket object used internally."""
+ return self.sock
+
+ def fileno(self):
+ """Return the fileno() of the socket object used internally."""
+ return self.sock.fileno()
+
+ def write(self, buffer):
+ """Write a string to the socket, doubling any IAC characters.
+
+ Can block if the connection is blocked. May raise
+ OSError if the connection is closed.
+
+ """
+ if IAC in buffer:
+ buffer = buffer.replace(IAC, IAC+IAC)
+ sys.audit("telnetlib.Telnet.write", self, buffer)
+ self.msg("send %r", buffer)
+ self.sock.sendall(buffer)
+
+ def read_until(self, match, timeout=None):
+ """Read until a given string is encountered or until timeout.
+
+ When no match is found, return whatever is available instead,
+ possibly the empty string. Raise EOFError if the connection
+ is closed and no cooked data is available.
+
+ """
+ n = len(match)
+ self.process_rawq()
+ i = self.cookedq.find(match)
+ if i >= 0:
+ i = i+n
+ buf = self.cookedq[:i]
+ self.cookedq = self.cookedq[i:]
+ return buf
+ if timeout is not None:
+ deadline = _time() + timeout
+ with _TelnetSelector() as selector:
+ selector.register(self, selectors.EVENT_READ)
+ while not self.eof:
+ if selector.select(timeout):
+ i = max(0, len(self.cookedq)-n)
+ self.fill_rawq()
+ self.process_rawq()
+ i = self.cookedq.find(match, i)
+ if i >= 0:
+ i = i+n
+ buf = self.cookedq[:i]
+ self.cookedq = self.cookedq[i:]
+ return buf
+ if timeout is not None:
+ timeout = deadline - _time()
+ if timeout < 0:
+ break
+ return self.read_very_lazy()
+
+ def read_all(self):
+ """Read all data until EOF; block until connection closed."""
+ self.process_rawq()
+ while not self.eof:
+ self.fill_rawq()
+ self.process_rawq()
+ buf = self.cookedq
+ self.cookedq = b''
+ return buf
+
+ def read_some(self):
+ """Read at least one byte of cooked data unless EOF is hit.
+
+ Return b'' if EOF is hit. Block if no data is immediately
+ available.
+
+ """
+ self.process_rawq()
+ while not self.cookedq and not self.eof:
+ self.fill_rawq()
+ self.process_rawq()
+ buf = self.cookedq
+ self.cookedq = b''
+ return buf
+
+ def read_very_eager(self):
+ """Read everything that's possible without blocking in I/O (eager).
+
+ Raise EOFError if connection closed and no cooked data
+ available. Return b'' if no cooked data available otherwise.
+ Don't block unless in the midst of an IAC sequence.
+
+ """
+ self.process_rawq()
+ while not self.eof and self.sock_avail():
+ self.fill_rawq()
+ self.process_rawq()
+ return self.read_very_lazy()
+
+ def read_eager(self):
+ """Read readily available data.
+
+ Raise EOFError if connection closed and no cooked data
+ available. Return b'' if no cooked data available otherwise.
+ Don't block unless in the midst of an IAC sequence.
+
+ """
+ self.process_rawq()
+ while not self.cookedq and not self.eof and self.sock_avail():
+ self.fill_rawq()
+ self.process_rawq()
+ return self.read_very_lazy()
+
+ def read_lazy(self):
+ """Process and return data that's already in the queues (lazy).
+
+ Raise EOFError if connection closed and no data available.
+ Return b'' if no cooked data available otherwise. Don't block
+ unless in the midst of an IAC sequence.
+
+ """
+ self.process_rawq()
+ return self.read_very_lazy()
+
+ def read_very_lazy(self):
+ """Return any data available in the cooked queue (very lazy).
+
+ Raise EOFError if connection closed and no data available.
+ Return b'' if no cooked data available otherwise. Don't block.
+
+ """
+ buf = self.cookedq
+ self.cookedq = b''
+ if not buf and self.eof and not self.rawq:
+ raise EOFError('telnet connection closed')
+ return buf
+
+ def read_sb_data(self):
+ """Return any data available in the SB ... SE queue.
+
+ Return b'' 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 = b''
+ return buf
+
+ def set_option_negotiation_callback(self, callback):
+ """Provide a callback function called after each receipt of a telnet option."""
+ self.option_callback = callback
+
+ def process_rawq(self):
+ """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.
+
+ """
+ buf = [b'', b'']
+ try:
+ while self.rawq:
+ c = self.rawq_getchar()
+ if not self.iacseq:
+ if c == theNULL:
+ continue
+ if c == b"\021":
+ continue
+ if c != IAC:
+ buf[self.sb] = buf[self.sb] + c
+ continue
+ else:
+ self.iacseq += 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 = b''
+ if c == IAC:
+ buf[self.sb] = buf[self.sb] + c
+ else:
+ if c == SB: # SB ... SE start.
+ self.sb = 1
+ self.sbdataq = b''
+ elif c == SE:
+ self.sb = 0
+ self.sbdataq = self.sbdataq + buf[1]
+ buf[1] = b''
+ if self.option_callback:
+ # Callback is supposed to look into
+ # the sbdataq
+ self.option_callback(self.sock, c, NOOPT)
+ else:
+ # We can't offer automatic processing of
+ # suboptions. Alas, we should not get any
+ # unless we did a WILL/DO before.
+ self.msg('IAC %d not recognized' % ord(c))
+ elif len(self.iacseq) == 2:
+ cmd = self.iacseq[1:2]
+ self.iacseq = b''
+ opt = c
+ if cmd in (DO, DONT):
+ self.msg('IAC %s %d',
+ cmd == DO and 'DO' or 'DONT', ord(opt))
+ if self.option_callback:
+ self.option_callback(self.sock, cmd, opt)
+ else:
+ self.sock.sendall(IAC + WONT + opt)
+ elif cmd in (WILL, WONT):
+ self.msg('IAC %s %d',
+ cmd == WILL and 'WILL' or 'WONT', ord(opt))
+ if self.option_callback:
+ self.option_callback(self.sock, cmd, opt)
+ else:
+ self.sock.sendall(IAC + DONT + opt)
+ except EOFError: # raised by self.rawq_getchar()
+ self.iacseq = b'' # Reset on EOF
+ self.sb = 0
+ pass
+ self.cookedq = self.cookedq + buf[0]
+ self.sbdataq = self.sbdataq + buf[1]
+
+ def rawq_getchar(self):
+ """Get next char from raw queue.
+
+ Block if no data is immediately available. Raise EOFError
+ when connection is closed.
+
+ """
+ if not self.rawq:
+ self.fill_rawq()
+ if self.eof:
+ raise EOFError
+ c = self.rawq[self.irawq:self.irawq+1]
+ self.irawq = self.irawq + 1
+ if self.irawq >= len(self.rawq):
+ self.rawq = b''
+ self.irawq = 0
+ return c
+
+ def fill_rawq(self):
+ """Fill raw queue from exactly one recv() system call.
+
+ Block if no data is immediately available. Set self.eof when
+ connection is closed.
+
+ """
+ if self.irawq >= len(self.rawq):
+ self.rawq = b''
+ self.irawq = 0
+ # The buffer size should be fairly small so as to avoid quadratic
+ # behavior in process_rawq() above
+ buf = self.sock.recv(50)
+ self.msg("recv %r", buf)
+ self.eof = (not buf)
+ self.rawq = self.rawq + buf
+
+ def sock_avail(self):
+ """Test whether data is available on the socket."""
+ with _TelnetSelector() as selector:
+ selector.register(self, selectors.EVENT_READ)
+ return bool(selector.select(0))
+
+ def interact(self):
+ """Interaction function, emulates a very dumb telnet client."""
+ if sys.platform == "win32":
+ self.mt_interact()
+ return
+ with _TelnetSelector() as selector:
+ selector.register(self, selectors.EVENT_READ)
+ selector.register(sys.stdin, selectors.EVENT_READ)
+
+ while True:
+ for key, events in selector.select():
+ if key.fileobj is self:
+ try:
+ text = self.read_eager()
+ except EOFError:
+ print('*** Connection closed by remote host ***')
+ return
+ if text:
+ sys.stdout.write(text.decode('ascii'))
+ sys.stdout.flush()
+ elif key.fileobj is sys.stdin:
+ line = sys.stdin.readline().encode('ascii')
+ if not line:
+ return
+ self.write(line)
+
+ def mt_interact(self):
+ """Multithreaded version of interact()."""
+ import _thread
+ _thread.start_new_thread(self.listener, ())
+ while 1:
+ line = sys.stdin.readline()
+ if not line:
+ break
+ self.write(line.encode('ascii'))
+
+ def listener(self):
+ """Helper for mt_interact() -- this executes in the other thread."""
+ while 1:
+ try:
+ data = self.read_eager()
+ except EOFError:
+ print('*** Connection closed by remote host ***')
+ return
+ if data:
+ sys.stdout.write(data.decode('ascii'))
+ else:
+ sys.stdout.flush()
+
+ def expect(self, list, timeout=None):
+ """Read until one from a list of a regular expressions matches.
+
+ The first argument is a list of regular expressions, either
+ compiled (re.Pattern instances) or uncompiled (strings).
+ The optional second argument is a timeout, in seconds; default
+ is no timeout.
+
+ Return a tuple of three items: the index in the list of the
+ first regular expression that matches; the re.Match object
+ returned; and the text read up till and including the match.
+
+ If EOF is read and no text was read, raise EOFError.
+ Otherwise, when nothing matches, return (-1, None, text) where
+ text is the text received so far (may be the empty string if a
+ timeout happened).
+
+ If a regular expression ends with a greedy match (e.g. '.*')
+ or if more than one expression can match the same input, the
+ results are undeterministic, and may depend on the I/O timing.
+
+ """
+ re = None
+ list = list[:]
+ indices = range(len(list))
+ for i in indices:
+ if not hasattr(list[i], "search"):
+ if not re: import re
+ list[i] = re.compile(list[i])
+ if timeout is not None:
+ deadline = _time() + timeout
+ with _TelnetSelector() as selector:
+ selector.register(self, selectors.EVENT_READ)
+ while not self.eof:
+ self.process_rawq()
+ for i in indices:
+ m = list[i].search(self.cookedq)
+ if m:
+ e = m.end()
+ text = self.cookedq[:e]
+ self.cookedq = self.cookedq[e:]
+ return (i, m, text)
+ if timeout is not None:
+ ready = selector.select(timeout)
+ timeout = deadline - _time()
+ if not ready:
+ if timeout < 0:
+ break
+ else:
+ continue
+ self.fill_rawq()
+ text = self.read_very_lazy()
+ if not text and self.eof:
+ raise EOFError
+ return (-1, None, text)
+
+ def __enter__(self):
+ return self
+
+ def __exit__(self, type, value, traceback):
+ self.close()
+
+
+def test():
+ """Test program for telnetlib.
+
+ Usage: python telnetlib.py [-d] ... [host [port]]
+
+ Default host is localhost; default port is 23.
+
+ """
+ debuglevel = 0
+ while sys.argv[1:] and sys.argv[1] == '-d':
+ debuglevel = debuglevel+1
+ del sys.argv[1]
+ host = 'localhost'
+ if sys.argv[1:]:
+ host = sys.argv[1]
+ port = 0
+ if sys.argv[2:]:
+ portstr = sys.argv[2]
+ try:
+ port = int(portstr)
+ except ValueError:
+ port = socket.getservbyname(portstr, 'tcp')
+ with Telnet() as tn:
+ tn.set_debuglevel(debuglevel)
+ tn.open(host, port, timeout=0.5)
+ tn.interact()
+
+if __name__ == '__main__':
+ test()