Mercurial > libervia-backend
annotate frontends/src/jp/base.py @ 1535:c9ef16de3f13
core: more robust plugins loading:
- avoid stopping loading remaining plugins when a plugin raise an error
- new error exceptions.MissingModule allows to detect a missing third party module, and to give instructions to get it
- error during instanciation are catched too
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Tue, 29 Sep 2015 17:54:23 +0200 |
| parents | 265ff2bd8d67 |
| children | 3d5193b4c582 |
| rev | line source |
|---|---|
| 0 | 1 #! /usr/bin/python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
|
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4 # jp: a SAT command line tool |
| 1396 | 5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Jérôme Poisson (goffi@goffi.org) |
| 0 | 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. |
| 0 | 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. |
| 0 | 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/>. |
| 0 | 19 |
| 771 | 20 from sat.core.i18n import _ |
|
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21 |
| 0 | 22 global pbar_available |
| 23 pbar_available = True #checked before using ProgressBar | |
| 24 | |
| 25 ### logging ### | |
| 26 import logging | |
| 27 from logging import debug, info, error, warning | |
| 28 logging.basicConfig(level=logging.DEBUG, | |
| 29 format='%(message)s') | |
| 30 ### | |
| 31 | |
| 32 import sys | |
| 817 | 33 import locale |
| 34 import os.path | |
| 35 import argparse | |
| 964 | 36 from gi.repository import GLib, GObject |
| 817 | 37 from glob import iglob |
| 38 from importlib import import_module | |
|
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39 from sat_frontends.tools.jid import JID |
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40 from sat_frontends.bridge.DBus import DBusBridgeFrontend |
| 817 | 41 from sat.core import exceptions |
| 42 import sat_frontends.jp | |
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43 from sat_frontends.jp.constants import Const as C |
| 0 | 44 try: |
| 817 | 45 import progressbar |
| 46 except ImportError: | |
| 47 info (_('ProgressBar not available, please download it at http://pypi.python.org/pypi/progressbar')) | |
| 48 info (_('Progress bar deactivated\n--\n')) | |
| 49 progressbar=None | |
| 50 | |
| 51 #consts | |
| 52 prog_name = u"jp" | |
| 53 description = """This software is a command line tool for XMPP. | |
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54 Get the latest version at """ + C.APP_URL |
| 817 | 55 |
| 1396 | 56 copyleft = u"""Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Jérôme Poisson (aka Goffi) |
| 817 | 57 This program comes with ABSOLUTELY NO WARRANTY; |
| 58 This is free software, and you are welcome to redistribute it under certain conditions. | |
| 59 """ | |
| 0 | 60 |
| 61 | |
| 817 | 62 def unicode_decoder(arg): |
| 63 # Needed to have unicode strings from arguments | |
| 64 return arg.decode(locale.getpreferredencoding()) | |
| 814 | 65 |
| 0 | 66 |
| 817 | 67 class Jp(object): |
| 814 | 68 """ |
| 69 This class can be use to establish a connection with the | |
| 70 bridge. Moreover, it should manage a main loop. | |
| 71 | |
| 72 To use it, you mainly have to redefine the method run to perform | |
| 73 specify what kind of operation you want to perform. | |
| 74 | |
| 75 """ | |
| 817 | 76 def __init__(self): |
|
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77 try: |
| 817 | 78 self.bridge = DBusBridgeFrontend() |
| 79 except exceptions.BridgeExceptionNoService: | |
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80 print(_(u"Can't connect to SàT backend, are you sure it's launched ?")) |
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81 sys.exit(1) |
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82 except exceptions.BridgeInitError: |
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83 print(_(u"Can't init bridge")) |
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84 sys.exit(1) |
| 814 | 85 |
| 817 | 86 self.parser = argparse.ArgumentParser(formatter_class=argparse.RawDescriptionHelpFormatter, |
| 87 description=description) | |
| 88 | |
| 89 self._make_parents() | |
| 90 self.add_parser_options() | |
| 91 self.subparsers = self.parser.add_subparsers(title=_('Available commands'), dest='subparser_name') | |
| 92 self._auto_loop = False # when loop is used for internal reasons | |
| 93 self.need_loop = False # to set by commands when loop is needed | |
| 94 self._progress_id = None # TODO: manage several progress ids | |
| 95 self.quit_on_progress_end = True # set to False if you manage yourself exiting, or if you want the user to stop by himself | |
| 96 | |
| 97 @property | |
| 98 def version(self): | |
| 99 return self.bridge.getVersion() | |
| 814 | 100 |
| 817 | 101 @property |
| 102 def progress_id(self): | |
| 103 return self._progress_id | |
| 104 | |
| 105 @progress_id.setter | |
| 106 def progress_id(self, value): | |
| 107 self._progress_id = value | |
| 108 | |
| 109 def _make_parents(self): | |
| 110 self.parents = {} | |
| 111 | |
| 112 profile_parent = self.parents['profile'] = argparse.ArgumentParser(add_help=False) | |
| 113 profile_parent.add_argument("-p", "--profile", action="store", type=str, default='@DEFAULT@', help=_("Use PROFILE profile key (default: %(default)s)")) | |
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114 profile_parent.add_argument("-c", "--connect", action="store", type=str, nargs='?', const='', default=None, metavar='PASSWORD', help=_("Connect the profile before doing anything else")) |
| 817 | 115 |
| 116 progress_parent = self.parents['progress'] = argparse.ArgumentParser(add_help=False) | |
| 117 if progressbar: | |
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118 progress_parent.add_argument("-P", "--progress", action="store_true", help=_("Show progress bar")) |
| 0 | 119 |
| 817 | 120 def add_parser_options(self): |
| 121 self.parser.add_argument('--version', action='version', version=("%(name)s %(version)s %(copyleft)s" % {'name': prog_name, 'version': self.version, 'copyleft': copyleft})) | |
| 122 | |
| 123 def import_commands(self): | |
| 124 """ Automaticaly import commands to jp | |
| 125 looks from modules names cmd_*.py in jp path and import them | |
| 126 | |
| 127 """ | |
| 128 path = os.path.dirname(sat_frontends.jp.__file__) | |
| 129 modules = (os.path.splitext(module)[0] for module in map(os.path.basename, iglob(os.path.join(path, "cmd_*.py")))) | |
| 130 for module_name in modules: | |
| 131 module = import_module("sat_frontends.jp."+module_name) | |
| 132 try: | |
| 133 self.import_command_module(module) | |
| 134 except ImportError: | |
| 135 continue | |
| 0 | 136 |
| 817 | 137 def import_command_module(self, module): |
| 138 """ Add commands from a module to jp | |
| 139 @param module: module containing commands | |
| 140 | |
| 141 """ | |
| 142 try: | |
| 143 for classname in module.__commands__: | |
| 144 cls = getattr(module, classname) | |
| 145 except AttributeError: | |
| 146 warning(_("Invalid module %s") % module) | |
| 147 raise ImportError | |
| 148 cls(self) | |
| 149 | |
| 150 | |
| 151 def run(self, args=None): | |
| 152 self.args = self.parser.parse_args(args) | |
| 153 self.args.func() | |
| 154 if self.need_loop or self._auto_loop: | |
| 155 self._start_loop() | |
| 156 | |
| 157 def _start_loop(self): | |
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158 self.loop = GLib.MainLoop() |
| 814 | 159 try: |
| 160 self.loop.run() | |
| 161 except KeyboardInterrupt: | |
| 162 info(_("User interruption: good bye")) | |
| 0 | 163 |
| 817 | 164 def stop_loop(self): |
| 165 try: | |
| 166 self.loop.quit() | |
| 167 except AttributeError: | |
| 168 pass | |
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169 |
| 817 | 170 def quit(self, errcode=0): |
| 171 self.stop_loop() | |
| 172 if errcode: | |
| 173 sys.exit(errcode) | |
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174 |
| 814 | 175 def check_jids(self, jids): |
| 176 """Check jids validity, transform roster name to corresponding jids | |
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177 |
| 817 | 178 @param profile: profile name |
| 179 @param jids: list of jids | |
| 180 @return: List of jids | |
| 181 | |
| 814 | 182 """ |
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183 names2jid = {} |
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184 nodes2jid = {} |
| 393 | 185 |
| 814 | 186 for contact in self.bridge.getContacts(self.profile): |
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187 jid_s, attr, groups = contact |
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188 _jid = JID(jid_s) |
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189 try: |
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190 names2jid[attr["name"].lower()] = jid_s |
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191 except KeyError: |
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192 pass |
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193 |
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194 if _jid.node: |
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195 nodes2jid[_jid.node.lower()] = jid_s |
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196 |
| 817 | 197 def expand_jid(jid): |
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198 _jid = jid.lower() |
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199 if _jid in names2jid: |
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200 expanded = names2jid[_jid] |
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201 elif _jid in nodes2jid: |
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202 expanded = nodes2jid[_jid] |
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203 else: |
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204 expanded = jid |
| 965 | 205 return expanded.decode('utf-8') |
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206 |
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207 def check(jid): |
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208 if not jid.is_valid: |
| 814 | 209 error (_("%s is not a valid JID !"), jid) |
| 817 | 210 self.quit(1) |
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211 |
| 814 | 212 dest_jids=[] |
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213 try: |
| 814 | 214 for i in range(len(jids)): |
| 817 | 215 dest_jids.append(expand_jid(jids[i])) |
| 814 | 216 check(dest_jids[i]) |
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217 except AttributeError: |
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218 pass |
| 0 | 219 |
| 814 | 220 return dest_jids |
| 0 | 221 |
| 817 | 222 def connect_profile(self, callback): |
| 223 """ Check if the profile is connected | |
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224 |
| 817 | 225 @param callback: method to call when profile is connected |
| 226 @exit: - 1 when profile is not connected and --connect is not set | |
| 227 - 1 when the profile doesn't exists | |
| 228 - 1 when there is a connection error | |
| 229 """ | |
| 230 # FIXME: need better exit codes | |
| 231 | |
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232 def cant_connect(failure): |
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233 error(_(u"Can't connect profile [%s]") % failure) |
| 817 | 234 self.quit(1) |
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235 |
| 817 | 236 self.profile = self.bridge.getProfileName(self.args.profile) |
| 0 | 237 |
| 817 | 238 if not self.profile: |
| 239 error(_("The profile [%s] doesn't exist") % self.args.profile) | |
| 240 self.quit(1) | |
| 241 | |
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242 if not hasattr(self.args, 'connect'): |
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243 # a profile can be presente without connect option (e.g. on profile creation/deletion) |
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244 return |
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245 elif self.args.connect is not None: # if connection is asked, we connect the profile |
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246 self.bridge.asyncConnect(self.profile, self.args.connect, lambda dummy: callback(), cant_connect) |
| 817 | 247 self._auto_loop = True |
| 814 | 248 return |
| 817 | 249 elif not self.bridge.isConnected(self.profile): |
| 250 error(_(u"Profile [%(profile)s] is not connected, please connect it before using jp, or use --connect option") % { "profile": self.profile }) | |
| 251 self.quit(1) | |
| 0 | 252 |
| 817 | 253 callback() |
| 254 | |
| 255 def get_full_jid(self, param_jid): | |
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256 """Return the full jid if possible (add main resource when find a bare jid)""" |
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257 _jid = JID(param_jid) |
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258 if not _jid.resource: |
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259 #if the resource is not given, we try to add the last known resource |
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260 last_resource = self.bridge.getMainResource(param_jid, self.profile) |
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261 if last_resource: |
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262 return "%s/%s" % (_jid.bare, last_resource) |
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263 return param_jid |
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264 |
| 817 | 265 def watch_progress(self): |
| 266 self.pbar = None | |
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267 GObject.timeout_add(10, self._progress_cb) |
| 0 | 268 |
| 817 | 269 def _progress_cb(self): |
| 270 if self.progress_id: | |
| 271 data = self.bridge.getProgress(self.progress_id, self.profile) | |
| 272 if data: | |
| 273 if not data['position']: | |
| 274 data['position'] = '0' | |
| 275 if not self.pbar: | |
| 276 #first answer, we must construct the bar | |
| 277 self.pbar = progressbar.ProgressBar(int(data['size']), | |
| 278 [_("Progress: "),progressbar.Percentage(), | |
| 279 " ", | |
| 280 progressbar.Bar(), | |
| 281 " ", | |
| 282 progressbar.FileTransferSpeed(), | |
| 283 " ", | |
| 284 progressbar.ETA()]) | |
| 285 self.pbar.start() | |
| 286 | |
| 287 self.pbar.update(int(data['position'])) | |
| 288 | |
| 289 elif self.pbar: | |
| 290 self.pbar.finish() | |
| 291 if self.quit_on_progress_end: | |
| 292 self.quit() | |
| 293 return False | |
| 294 | |
| 295 return True | |
| 814 | 296 |
| 297 | |
| 817 | 298 class CommandBase(object): |
| 814 | 299 |
| 817 | 300 def __init__(self, host, name, use_profile=True, use_progress=False, help=None, **kwargs): |
| 301 """ Initialise CommandBase | |
| 302 @param host: Jp instance | |
| 303 @param name: name of the new command | |
| 304 @param use_profile: if True, add profile selection/connection commands | |
| 305 @param use_progress: if True, add progress bar activation commands | |
| 306 @param help: help message to display | |
| 307 @param **kwargs: args passed to ArgumentParser | |
| 308 | |
| 814 | 309 """ |
| 817 | 310 try: # If we have subcommands, host is a CommandBase and we need to use host.host |
| 311 self.host = host.host | |
| 312 except AttributeError: | |
| 313 self.host = host | |
| 314 | |
| 315 parents = kwargs.setdefault('parents', set()) | |
| 316 if use_profile: | |
| 317 #self.host.parents['profile'] is an ArgumentParser with profile connection arguments | |
| 318 parents.add(self.host.parents['profile']) | |
| 319 if use_progress: | |
| 320 parents.add(self.host.parents['progress']) | |
| 321 | |
| 322 self.parser = host.subparsers.add_parser(name, help=help, **kwargs) | |
| 323 if hasattr(self, "subcommands"): | |
| 324 self.subparsers = self.parser.add_subparsers() | |
| 325 else: | |
| 326 self.parser.set_defaults(func=self.run) | |
| 327 self.add_parser_options() | |
| 328 | |
| 329 @property | |
| 330 def args(self): | |
| 331 return self.host.args | |
| 332 | |
| 333 @property | |
| 334 def need_loop(self): | |
| 335 return self.host.need_loop | |
| 336 | |
| 337 @need_loop.setter | |
| 338 def need_loop(self, value): | |
| 339 self.host.need_loop = value | |
| 340 | |
| 341 @property | |
| 342 def profile(self): | |
| 343 return self.host.profile | |
| 344 | |
| 345 @property | |
| 346 def progress_id(self): | |
| 347 return self.host.progress_id | |
| 814 | 348 |
| 817 | 349 @progress_id.setter |
| 350 def progress_id(self, value): | |
| 351 self.host.progress_id = value | |
| 352 | |
| 353 def add_parser_options(self): | |
| 354 try: | |
| 355 subcommands = self.subcommands | |
| 356 except AttributeError: | |
| 357 # We don't have subcommands, the class need to implements add_parser_options | |
| 358 raise NotImplementedError | |
| 359 | |
| 360 # now we add subcommands to ourself | |
| 361 for cls in subcommands: | |
| 362 cls(self) | |
| 814 | 363 |
| 817 | 364 def run(self): |
| 365 try: | |
| 366 if self.args.profile: | |
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367 connect_profile = self.host.connect_profile |
| 817 | 368 except AttributeError: |
| 369 # the command doesn't need to connect profile | |
| 370 pass | |
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371 else: |
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372 connect_profile(self.connected) |
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373 |
| 817 | 374 try: |
| 375 if self.args.progress: | |
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376 watch_progress = self.host.watch_progress |
| 817 | 377 except AttributeError: |
| 378 # the command doesn't use progress bar | |
| 379 pass | |
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380 else: |
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381 watch_progress() |
| 817 | 382 |
| 383 def connected(self): | |
| 384 if not self.need_loop: | |
| 385 self.host.stop_loop() | |
| 386 | |
| 387 | |
| 388 class CommandAnswering(CommandBase): | |
| 389 #FIXME: temp, will be refactored when progress_bar/confirmations will be refactored | |
| 390 | |
| 391 def _ask_confirmation(self, confirm_id, confirm_type, data, profile): | |
| 392 """ Callback used for file transfer, accept files depending on parameters""" | |
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393 if profile != self.profile: |
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394 debug("Ask confirmation ignored: not our profile") |
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395 return |
| 817 | 396 if confirm_type == self.confirm_type: |
| 397 if self.dest_jids and not JID(data['from']).bare in [JID(_jid).bare for _jid in self.dest_jids()]: | |
| 0 | 398 return #file is not sent by a filtered jid |
| 399 else: | |
| 817 | 400 self.ask(data, confirm_id) |
| 0 | 401 |
| 814 | 402 def ask(self): |
| 403 """ | |
| 404 The return value is used to answer to the bridge. | |
| 817 | 405 @return: bool or dict |
| 814 | 406 """ |
| 407 raise NotImplementedError | |
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408 |
| 817 | 409 def connected(self): |
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410 """Auto reply to confirmations requests""" |
| 817 | 411 self.need_loop = True |
| 412 super(CommandAnswering, self).connected() | |
| 413 # we watch confirmation signals | |
| 414 self.host.bridge.register("ask_confirmation", self._ask_confirmation) | |
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415 |
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416 #and we ask those we have missed |
| 817 | 417 for confirm_id, confirm_type, data in self.host.bridge.getWaitingConf(self.profile): |
| 418 self._ask_confirmation(confirm_id, confirm_type, data, self.profile) |