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annotate frontends/src/jp/cmd_pipe.py @ 2489:e2a7bb875957

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plugin pipe/stream, file transfert: refactoring and improvments: this is a big patch as things had to be changed at the same time. - changed methods using profile argument to use client instead - move SatFile in a new tools.stream module, has it should be part of core, not a plugin - new IStreamProducer interface, to handler starting a pull producer - new FileStreamObject which create a stream producer/consumer from a SatFile - plugin pipe is no more using unix named pipe, as it complicate the thing, special care need to be taken to not block, and it's generally not necessary. Instead a socket is now used, so the plugin has been renomed to jingle stream. - bad connection/error should be better handler in jingle stream plugin, and code should not block anymore - jp pipe commands have been updated accordingly fix bug 237
author Goffi <goffi@goffi.org>
date Thu, 08 Feb 2018 00:37:42 +0100
parents 0046283a285d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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3e168cde7a7d jp: fixed shebang python call
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # jp: a SAT command line tool
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5 # Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat_frontends.jp import base
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21
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22 from sat_frontends.jp.constants import Const as C
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23 import sys
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24 from sat.core.i18n import _
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25 from sat_frontends.tools import jid
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26 import xml.etree.ElementTree as ET # FIXME: used temporarily to manage XMLUI
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27 from functools import partial
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28 import socket
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29 import SocketServer
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30 import errno
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31
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32 __commands__ = ["Pipe"]
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33
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34 START_PORT = 9999
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35
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36 class PipeOut(base.CommandBase):
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37
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38 def __init__(self, host):
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39 super(PipeOut, self).__init__(host, 'out', help=_('send a pipe a stream'))
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40 self.need_loop = True
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41
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42 def add_parser_options(self):
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43 self.parser.add_argument("jid", type=base.unicode_decoder, help=_("the destination jid"))
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44
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45 def streamOutCb(self, port):
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46 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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47 s.connect(('127.0.0.1', int(port)))
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48 while True:
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49 buf = sys.stdin.read(4096)
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50 if not buf:
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51 break
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52 try:
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53 s.sendall(buf)
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54 except socket.error as e:
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55 if e.errno == errno.EPIPE:
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56 sys.stderr.write(str(e) + '\n')
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57 self.host.quit(1)
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58 else:
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59 raise e
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60 self.host.quit()
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61
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62 def start(self):
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63 """ Create named pipe, and send stdin to it """
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64 self.host.bridge.streamOut(
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65 self.host.get_full_jid(self.args.jid),
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66 self.profile,
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67 callback=self.streamOutCb,
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68 errback=partial(self.errback,
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69 msg=_(u"can't start stream: {}"),
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70 exit_code=C.EXIT_BRIDGE_ERRBACK))
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71
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72
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73 class StreamServer(SocketServer.BaseRequestHandler):
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74
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75 def handle(self):
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76 while True:
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77 data = self.request.recv(4096)
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78 if not data:
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79 break
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80 sys.stdout.write(data)
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81 try:
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82 sys.stdout.flush()
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83 except IOError as e:
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84 sys.stderr.write(str(e) + '\n')
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85 break
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86 # calling shutdown will do a deadlock as we don't use separate thread
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87 # this is a workaround (cf. https://stackoverflow.com/a/36017741)
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88 self.server._BaseServer__shutdown_request = True
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89
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90
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91 class PipeIn(base.CommandAnswering):
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92
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93 def __init__(self, host):
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94 super(PipeIn, self).__init__(host, 'in', help=_('receive a pipe stream'))
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95 self.action_callbacks = {"STREAM": self.onStreamAction}
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96
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97 def add_parser_options(self):
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98 self.parser.add_argument("jids", type=base.unicode_decoder, nargs="*", help=_('Jids accepted (none means "accept everything")'))
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99
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100 def getXmluiId(self, action_data):
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101 # FIXME: we temporarily use ElementTree, but a real XMLUI managing module
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102 # should be available in the future
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103 # TODO: XMLUI module
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104 try:
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105 xml_ui = action_data['xmlui']
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106 except KeyError:
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107 self.disp(_(u"Action has no XMLUI"), 1)
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108 else:
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109 ui = ET.fromstring(xml_ui.encode('utf-8'))
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110 xmlui_id = ui.get('submit')
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111 if not xmlui_id:
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112 self.disp(_(u"Invalid XMLUI received"), error=True)
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113 return xmlui_id
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114
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115 def onStreamAction(self, action_data, action_id, security_limit, profile):
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116 xmlui_id = self.getXmluiId(action_data)
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117 if xmlui_id is None:
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118 return self.host.quitFromSignal(1)
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119 try:
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120 from_jid = jid.JID(action_data['meta_from_jid'])
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parents: 1396
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121 except KeyError:
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Goffi <goffi@goffi.org>
parents: 1396
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122 self.disp(_(u"Ignoring action without from_jid data"), 1)
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123 return
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124
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125 if not self.bare_jids or from_jid.bare in self.bare_jids:
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126 host, port = "localhost", START_PORT
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127 while True:
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128 try:
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129 server = SocketServer.TCPServer((host, port), StreamServer)
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130 except socket.error as e:
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131 if e.errno == errno.EADDRINUSE:
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132 port += 1
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133 else:
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Goffi <goffi@goffi.org>
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134 raise e
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Goffi <goffi@goffi.org>
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135 else:
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Goffi <goffi@goffi.org>
parents: 2483
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136 break
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
137 xmlui_data = {'answer': C.BOOL_TRUE,
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Goffi <goffi@goffi.org>
parents: 2483
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138 'port': unicode(port)}
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3690b4d4157e jp (pipe): pipe commands now use the new CommandAnswering API (with actionNew)
Goffi <goffi@goffi.org>
parents: 1396
diff changeset
139 self.host.bridge.launchAction(xmlui_id, xmlui_data, profile_key=profile)
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
140 server.serve_forever()
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
141 self.host.quitFromSignal()
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142
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96ba685162f6 jp: all commands now use the new start method and set need_loop in __init__ when needed
Goffi <goffi@goffi.org>
parents: 1766
diff changeset
143 def start(self):
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parents: 1396
diff changeset
144 self.bare_jids = [jid.JID(jid_).bare for jid_ in self.args.jids]
817
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parents: 815
diff changeset
145
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parents: 815
diff changeset
146
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diff changeset
147 class Pipe(base.CommandBase):
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148 subcommands = (PipeOut, PipeIn)
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149
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parents: 815
diff changeset
150 def __init__(self, host):
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diff changeset
151 super(Pipe, self).__init__(host, 'pipe', use_profile=False, help=_('stream piping through XMPP'))