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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
# You can run this .tac file directly with:
# twistd -ny window.tac
#
# Re-using a private key is dangerous, generate one.
#
# For this example you can use:
#
# $ ckeygen -t rsa -f ssh-keys/ssh_host_rsa_key
"""
Widgets demo.
You can run this .tac file directly with:
twistd -ny window.tac
Demonstrates various widgets or buttons, such as scrollable regions,
drawable canvas, etc.
This demo sets up two listening ports: one on 6022 which accepts ssh
connections; one on 6023 which accepts telnet connections. No login for the
telnet server is required; for the ssh server, "username" is the username and
"password" is the password.
"""
import random
import string
from twisted.application import internet, service
from twisted.conch.insults import insults, window
from twisted.conch.manhole_ssh import ConchFactory, TerminalRealm
from twisted.conch.ssh import keys
from twisted.conch.telnet import TelnetBootstrapProtocol, TelnetTransport
from twisted.cred import checkers, portal
from twisted.internet import protocol, reactor, task
from twisted.python import log
class DrawableCanvas(window.Canvas):
x = 0
y = 0
def func_LEFT_ARROW(self, modifier):
self.x -= 1
self.repaint()
def func_RIGHT_ARROW(self, modifier):
self.x += 1
self.repaint()
def func_UP_ARROW(self, modifier):
self.y -= 1
self.repaint()
def func_DOWN_ARROW(self, modifier):
self.y += 1
self.repaint()
def characterReceived(self, keyID, modifier):
self[self.x, self.y] = keyID
self.x += 1
self.repaint()
def keystrokeReceived(self, keyID, modifier):
if keyID == b"\r" or keyID == b"\v":
return
window.Canvas.keystrokeReceived(self, keyID, modifier)
if self.x >= self.width:
self.x = 0
elif self.x < 0:
self.x = self.width - 1
if self.y >= self.height:
self.y = 0
elif self.y < 0:
self.y = self.height - 1
self.repaint()
def render(self, width, height, terminal):
window.Canvas.render(self, width, height, terminal)
if self.focused:
terminal.cursorPosition(self.x, self.y)
ch = chr(self[self.x, self.y])
window.cursor(terminal, ch)
class ButtonDemo(insults.TerminalProtocol):
width = 80
height = 24
def _draw(self):
self.window.draw(self.width, self.height, self.terminal)
def _redraw(self):
self.window.filthy()
self._draw()
def _schedule(self, f):
reactor.callLater(0, f)
def connectionMade(self):
self.terminal.eraseDisplay()
self.terminal.resetPrivateModes([insults.privateModes.CURSOR_MODE])
self.window = window.TopWindow(self._draw, self._schedule)
self.output = window.TextOutput((15, 1))
self.input = window.TextInput(15, self._setText)
selections = [num.encode("utf-8") for num in map(str, range(100))]
self.select1 = window.Selection(selections, self._setText, 10)
selections = [num.encode("utf-8") for num in map(str, range(200, 300))]
self.select2 = window.Selection(selections, self._setText, 10)
self.button = window.Button(b"Clear", self._clear)
self.canvas = DrawableCanvas()
hbox = window.HBox()
hbox.addChild(self.input)
hbox.addChild(self.output)
hbox.addChild(window.Border(self.button))
hbox.addChild(window.Border(self.select1))
hbox.addChild(window.Border(self.select2))
t1 = window.TextOutputArea(longLines=window.TextOutputArea.WRAP)
t2 = window.TextOutputArea(longLines=window.TextOutputArea.TRUNCATE)
t3 = window.TextOutputArea(longLines=window.TextOutputArea.TRUNCATE)
t4 = window.TextOutputArea(longLines=window.TextOutputArea.TRUNCATE)
for _t in t1, t2, t3, t4:
_t.setText(((b"This is a very long string. " * 3) + b"\n") * 3)
vp = window.Viewport(t3)
d = [1]
def spin():
vp.xOffset += d[0]
if vp.xOffset == 0 or vp.xOffset == 25:
d[0] *= -1
self.call = task.LoopingCall(spin)
self.call.start(0.25, now=False)
hbox.addChild(window.Border(vp))
vp2 = window.ScrolledArea(t4)
hbox.addChild(vp2)
texts = window.VBox()
texts.addChild(window.Border(t1))
texts.addChild(window.Border(t2))
areas = window.HBox()
areas.addChild(window.Border(self.canvas))
areas.addChild(texts)
vbox = window.VBox()
vbox.addChild(hbox)
vbox.addChild(areas)
self.window.addChild(vbox)
self.terminalSize(self.width, self.height)
def connectionLost(self, reason):
self.call.stop()
insults.TerminalProtocol.connectionLost(self, reason)
def terminalSize(self, width, height):
self.width = width
self.height = height
self.terminal.eraseDisplay()
self._redraw()
def keystrokeReceived(self, keyID, modifier):
self.window.keystrokeReceived(keyID, modifier)
def _clear(self):
self.canvas.clear()
def _setText(self, text):
self.input.setText(b"")
self.output.setText(text)
def makeService(args):
checker = checkers.InMemoryUsernamePasswordDatabaseDontUse(username=b"password")
f = protocol.ServerFactory()
f.protocol = lambda: TelnetTransport(
TelnetBootstrapProtocol,
insults.ServerProtocol,
args["protocolFactory"],
*args.get("protocolArgs", ()),
**args.get("protocolKwArgs", {}),
)
tsvc = internet.TCPServer(args["telnet"], f)
def chainProtocolFactory():
return insults.ServerProtocol(
args["protocolFactory"],
*args.get("protocolArgs", ()),
**args.get("protocolKwArgs", {}),
)
rlm = TerminalRealm()
rlm.chainedProtocolFactory = chainProtocolFactory
ptl = portal.Portal(rlm, [checker])
f = ConchFactory(ptl)
f.publicKeys[b"ssh-rsa"] = keys.Key.fromFile("ssh-keys/ssh_host_rsa_key.pub")
f.privateKeys[b"ssh-rsa"] = keys.Key.fromFile("ssh-keys/ssh_host_rsa_key")
csvc = internet.TCPServer(args["ssh"], f)
m = service.MultiService()
tsvc.setServiceParent(m)
csvc.setServiceParent(m)
return m
application = service.Application("Window Demo")
makeService(
{"protocolFactory": ButtonDemo, "telnet": 6023, "ssh": 6022}
).setServiceParent(application)
|
