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# $Id$
#
# This file is part of ivam2.
#
# ivam2 is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# ivam2 is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with ivam2; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
import os, sys, time, select, signal, gzip
import ivamCore, ivamApi, ivamUtil
pc = None
def sigterm(*args):
pc.quit = 1
class PipeConnector(ivamApi.Connector):
BUFSIZE = 128
stdin = sys.stdin
stdout = sys.stdout
playing = False
recording = False
timeout = 0
quit = False
umask = 0007
def __init__(self, processor):
if ivamCore.DEBUG:
ivamCore.log("PipeConnector()")
global pc
pc = self
signal.signal(signal.SIGTERM, sigterm)
self.callerNumber = os.getenv("CALLERMSN")
self.ringNumber = os.getenv("RINGMSN")
self.processor = processor
try:
s = os.fstat(128)
self.pipeHack = True
ivamCore.log("Found and enabled pipe hack.")
except OSError:
self.pipeHack = False
ivamCore.log("Pipe hack not detected.")
def openDtmf(self):
try:
fn = os.environ["DTMFFIFO"]
except KeyError:
self.dtmfFifo = None
return
self.dtmfFifo = file(fn, "rb")
def playClip(self, fname):
self.stopPlayback()
if ivamCore.DEBUG:
ivamCore.log("playClip('%s')" % fname)
self.playFile = ivamUtil.magicFile(fname, "rb")
self.playName = fname
self.playing = True
self.playBuffer = None
def stopPlayback(self):
if ivamCore.DEBUG:
ivamCore.log("stopPlayback()")
if self.playing:
self.playFile.close()
self.playing = False
def stopPlayback2(self):
self.stopPlayback()
self.processor.onClipFinish(self, self.playName)
def recordClip(self, fname, z = False):
self.stopRecording()
if ivamCore.DEBUG:
ivamCore.log("recordClip('%s')" % fname)
u = os.umask(self.umask)
try:
if z:
self.recordFile = gzip.open(fname, "w+b")
else:
self.recordFile = open(fname, "w+b")
finally:
os.umask(u)
self.recordName = fname
self.recording = True
self.recordLength = 0
def stopRecording(self):
if ivamCore.DEBUG:
ivamCore.log("stopRecording()")
if self.recording:
self.recordFile.close()
self.recording = False
self.processor.onRecordFinish(self, self.recordName, self.recordLength)
def setTimeout(self, t):
if ivamCore.DEBUG:
ivamCore.log("timeout(%u)" % t)
if t:
self.timeout = time.time()+t
else:
self.timeout = 0
def run(self):
if ivamCore.DEBUG:
ivamCore.log("run()")
self.openDtmf()
self.processor.onConnect(self, self.callerNumber, self.ringNumber)
self.loop()
self.stopPlayback()
self.stopRecording()
self.processor.onHangup(self)
if not self.dtmfFifo is None:
self.dtmfFifo.close()
if ivamCore.DEBUG:
ivamCore.log("run() finished")
def hangup(self):
if ivamCore.DEBUG:
ivamCore.log("hangup()")
self.quit = True
def loop(self):
while not self.quit:
t = None
now = time.time()
if self.timeout:
t = self.timeout - now
if t < 0:
t = 0
o = []
i = [self.stdin]
if not self.dtmfFifo is None:
i += [self.dtmfFifo]
if self.playing:
o += [self.stdout]
if t is None:
i, o, x = select.select(i, o, [])
else:
i, o, x = select.select(i, o, [], t)
now = time.time()
if self.timeout and self.timeout < now:
self.processor.onTimeout(self)
self.timeout = 0
if self.quit: break
# Check DTMF fifo
if not self.dtmfFifo is None and self.dtmfFifo in i:
self.handleDtmf()
if self.quit: break
# Check STDOUT
if self.stdout in o:
self.writeStdout()
if self.quit: break
# Check STDIN
if self.stdin in i:
self.readStdin()
if self.quit: break
def readStdin(self):
buf = os.read(self.stdin.fileno(), self.BUFSIZE)
if buf == "":
self.quit = 1
elif self.recording:
self.recordFile.write(buf)
self.recordLength += len(buf)
def writeStdout(self):
if not self.playing:
return
if self.playBuffer is None:
self.playBuffer = self.playFile.read(self.BUFSIZE)
# EOF?
if len(self.playBuffer) == 0:
self.stopPlayback2()
return
c = os.write(self.stdout.fileno(), self.playBuffer)
self.playBuffer = self.playBuffer[c:]
if len(self.playBuffer) == 0:
self.playBuffer = None
def handleDtmf(self):
if not self.dtmfFifo is None:
d = self.dtmfFifo.read(1)
if d == "":
self.dtmfFifo.close()
self.dtmfFifo = None
else:
self.processor.onDtmfEvent(self, d)
def flushOutput(self):
if not self.pipeHack:
return
try:
b = os.read(128, 4096)
if ivamCore.DEBUG:
ivamCore.log("Pipe hack succeeded")
except OSError:
if ivamCore.DEBUG:
ivamCore.log("Pipe hack failed")
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