540 lines
18 KiB
Python
540 lines
18 KiB
Python
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# coding: utf-8
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#
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# Postfix queue control python tool (pymailq)
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#
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# Copyright (C) 2014 Denis Pompilio (jawa) <denis.pompilio@gmail.com>
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# Copyright (C) 2014 Jocelyn Delalande <jdelalande@oasiswork.fr>
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#
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# This file is part of pymailq
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, see <http://www.gnu.org/licenses/>.
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import cmd
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from functools import partial
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from datetime import datetime, timedelta
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from subprocess import CalledProcessError
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import shlex
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import inspect
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from pymailq import store, control, selector, utils
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class PyMailqShell(cmd.Cmd):
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"""PyMailq shell for interactive mode"""
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# Automatic building of supported methods and documentation
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commands_info = {
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'store': 'Control of Postfix queue content storage',
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'select': 'Select mails from Postfix queue content',
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'inspect': 'Mail content inspector',
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'super': 'Call postsuper commands'
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}
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# XXX: do_* methods are parsed before init and must be declared here
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do_inspect = None
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do_store = None
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do_select = None
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do_super = None
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def __init__(self, completekey='tab', stdin=None, stdout=None,
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store_auto_load=False):
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"""Init method"""
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cmd.Cmd.__init__(self, completekey, stdin, stdout)
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# EOF action is registered here to hide it from user
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self.do_EOF = self.do_exit
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for command in self.commands_info:
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setattr(self, "help_%s" % (command,), partial(self._help_, command))
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setattr(self, "do_%s" % (command,), partial(self.__do, command))
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# show command is specific and cannot be build dynamically
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setattr(self, "help_show", partial(self._help_, "show"))
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self.pstore = store.PostqueueStore()
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self.selector = selector.MailSelector(self.pstore)
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self.qcontrol = control.QueueControl()
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if store_auto_load:
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self.respond("Loading mails queue content to store")
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self._store_load()
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def respond(self, answer):
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"""Send response"""
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if not isinstance(answer, str):
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answer = answer.encode('utf-8')
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self.stdout.write('%s\n' % answer)
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# Internal functions
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def emptyline(self):
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"""Action on empty lines"""
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pass
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def help_help(self):
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"""Help of command help"""
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self.respond("Show available commands")
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@staticmethod
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def do_exit(arg):
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"""Action on exit"""
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return True
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def help_exit(self):
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"""Help of command exit"""
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self.respond("Exit PyMailq shell (or use Ctrl-D)")
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def cmdloop_nointerrupt(self):
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"""Specific cmdloop to handle KeyboardInterrupt"""
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can_exit = False
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# intro message is not in self.intro not to display it each time
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# cmdloop is restarted
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self.respond("Welcome to PyMailq shell.")
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while can_exit is not True:
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try:
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self.cmdloop()
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can_exit = True
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except KeyboardInterrupt:
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self.respond("^C")
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def postloop(self):
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cmd.Cmd.postloop(self)
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self.respond("\nExiting shell... Bye.")
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def _help_(self, command):
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docstr = self.commands_info.get(
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command, getattr(self, "do_%s" % (command,)).__doc__)
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self.respond(inspect.cleandoc(docstr))
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self.respond("Subcommands:")
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for method in dir(self):
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if method.startswith("_%s_" % (command,)):
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docstr = getattr(self, method).__doc__
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doclines = inspect.cleandoc(docstr).split('\n')
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self.respond(" %-10s %s" % (method[len(command)+2:],
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doclines.pop(0)))
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for line in doclines:
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self.respond(" %-10s %s" % ("", line))
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#
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# PyMailq methods
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#
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@property
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def prompt(self):
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"""Dynamic prompt with usefull informations"""
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prompt = ['PyMailq']
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if self.selector is not None:
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prompt.append(' (sel:%d)' % (len(self.selector.mails)))
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prompt.append('> ')
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return "".join(prompt)
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def __do(self, cmd_category, str_arg):
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"""Generic do_* method to call cmd categories"""
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args = shlex.split(str_arg)
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if not len(args):
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getattr(self, "help_%s" % (cmd_category,))()
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return None
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command = args.pop(0)
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method = "_%s_%s" % (cmd_category, command)
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try:
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lines = getattr(self, method)(*args)
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if lines is not None and len(lines):
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self.respond('\n'.join(lines))
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except AttributeError:
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self.respond("%s has no subcommand: %s" % (cmd_category, command))
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except (SyntaxError, TypeError) as exc:
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# Rewording Python TypeError message for cli display
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msg = str(exc)
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if "%s()" % (method,) in msg:
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msg = "%s command %s" % (cmd_category, msg[len(method)+3:])
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self.respond("*** Syntax error: " + msg)
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@staticmethod
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def get_modifiers(match, excludes=()):
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"""Get modifiers from match
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:param str match: String to match in modifiers
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:param list excludes: Excluded modifiers
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:return: Matched modifiers as :func:`list`
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"""
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modifiers = {
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'limit': ['<n>'],
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'rankby': ['<field>'],
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'sortby': ['<field> [asc|desc]']
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}
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if match in modifiers and match not in excludes:
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return modifiers[match]
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return [mod for mod in modifiers
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if mod not in excludes and mod.startswith(match)]
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def completenames(self, text, *ignored):
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"""Complete known commands"""
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dotext = 'do_'+text
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suggests = [a[3:] for a in self.get_names() if a.startswith(dotext)]
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if len(suggests) == 1:
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# Only one suggest, return it with a space
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suggests[0] += " "
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return suggests
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def completedefault(self, text, line, *ignored):
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"""Generic command completion method"""
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# we may consider the use of re.match for params in completion
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completion = {
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'show': {
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'__allow_mods__': True,
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},
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'inspect': {
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'mails': ['<qid>[,<qid>,...]']
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},
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'select': {
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'date': ['<datespec>'],
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'error': ['<error_msg>'],
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'rmfilter': ['<filterid>'],
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'sender': ['<sender> [exact]'],
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'recipient': ['<recipient> [exact]'],
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'size': ['<-n|n|+n> [-n]'],
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'status': ['<status>']
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}
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}
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args = shlex.split(line)
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command = args.pop(0)
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sub_command = ""
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if len(args):
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sub_command = args.pop(0)
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match = "_%s_" % (command,)
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suggests = [name[len(match):] for name in dir(self)
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if name.startswith(match + sub_command)]
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# No suggests, return None
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if not len(suggests):
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return None
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# Return multiple suggests for sub-command
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if len(suggests) > 1:
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return suggests
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suggest = suggests.pop(0)
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exact_match = True if suggest == sub_command else False
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if suggest in completion.get(command, {}):
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if not exact_match:
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# Sub-command takes params, suffix it with a space
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return [suggest + " "]
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elif not len(args):
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# Return sub-command params
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return completion[command][sub_command]
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elif not exact_match:
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# Sub-command doesn't take params, return as is
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return [suggest]
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# Command allows modifiers
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if completion[command].get('__allow_mods__'):
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if len(args) or not len(text):
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match = args[-1] if len(args) else ""
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mods = self.get_modifiers(match, excludes=args[:-1])
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if not len(mods):
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mods = self.get_modifiers("", excludes=args)
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if len(mods):
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mods[0] += " " if len(mods) == 1 else ""
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suggests = mods
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if not len(suggests):
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return None
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return suggests
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def _store_load(self, filename=None):
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"""Load Postfix queue content"""
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try:
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self.pstore.load(filename=filename)
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# Automatic load of selector if it is empty and never used.
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if not len(self.selector.mails) and not len(self.selector.filters):
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self.selector.reset()
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return ["%d mails loaded from queue" % (len(self.pstore.mails))]
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except (OSError, IOError, CalledProcessError) as exc:
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return ["*** Error: unable to load store", " %s" % (exc,)]
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def _store_status(self):
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"""Show store status"""
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if self.pstore is None or self.pstore.loaded_at is None:
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return ["store is not loaded"]
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return ["store loaded with %d mails at %s" % (
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len(self.pstore.mails), self.pstore.loaded_at)]
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def _select_reset(self):
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"""Reset content of selector with store content"""
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self.selector.reset()
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return ["Selector resetted with store content (%s mails)" % (
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len(self.selector.mails))]
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def _select_replay(self):
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"""Reset content of selector with store content and replay filters"""
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self.selector.replay_filters()
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return ["Selector resetted and filters replayed"]
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def _select_rmfilter(self, filterid):
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"""
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Remove filter previously applied
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Filters ids are used to specify filter to remove
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Usage: select rmfilter <filterid>
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"""
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try:
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idx = int(filterid)
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self.selector.filters.pop(idx)
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self.selector.replay_filters()
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# TODO: except should be more accurate
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except:
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raise SyntaxError("invalid filter ID: %s" % filterid)
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def _select_qids(self, *qids):
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"""
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Select mails by ID
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Usage: select qids <qid>[,<qid>,...]
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"""
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self.selector.lookup_qids(qids)
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def _select_status(self, status):
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"""
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Select mails with specific postfix status
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Usage: select status <status>
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"""
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self.selector.lookup_status(status=status)
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def _select_sender(self, sender, exact=False):
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"""
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Select mails from sender
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Usage: select sender <sender> [exact]
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"""
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if exact is not False: # received from command line
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if exact != "exact":
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raise SyntaxError("invalid keyword: %s" % exact)
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exact = True
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self.selector.lookup_sender(sender=sender, exact=exact)
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def _select_recipient(self, recipient, exact=False):
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"""
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Select mails to recipient
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Usage: select recipient <recipient> [exact]
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"""
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if exact is not False: # received from command line
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if exact != "exact":
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raise SyntaxError("invalid keyword: %s" % exact)
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exact = True
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self.selector.lookup_recipient(recipient=recipient, exact=exact)
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def _select_size(self, size_a, size_b=None):
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"""
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Select mails by size in Bytes
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- and + are supported, if not specified, search for exact size
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Size range is allowed by using - (lesser than) and + (greater than)
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Usage: select size <-n|n|+n> [-n]
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"""
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smin = None
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smax = None
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exact = None
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try:
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for size in size_a, size_b:
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if size is None:
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continue
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if exact is not None:
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raise SyntaxError("exact size must be used alone")
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if size.startswith("-"):
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if smax is not None:
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raise SyntaxError("multiple max sizes specified")
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smax = int(size[1:])
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elif size.startswith("+"):
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if smin is not None:
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raise SyntaxError("multiple min sizes specified")
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smin = int(size[1:])
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else:
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exact = int(size)
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except ValueError:
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raise SyntaxError("specified sizes must be valid numbers")
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if exact is not None:
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smin = exact
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smax = exact
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if smax is None:
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smax = 0
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if smin is None:
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smin = 0
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if smin > smax > 0:
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raise SyntaxError("minimum size is greater than maximum size")
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self.selector.lookup_size(smin=smin, smax=smax)
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def _select_date(self, date_spec):
|
||
|
|
"""
|
||
|
|
Select mails by date.
|
||
|
|
Usage:
|
||
|
|
select date <DATESPEC>
|
||
|
|
Where <DATESPEC> can be
|
||
|
|
YYYY-MM-DD (exact date)
|
||
|
|
YYYY-MM-DD..YYYY-MM-DD (within a date range (included))
|
||
|
|
+YYYY-MM-DD (after a date (included))
|
||
|
|
-YYYY-MM-DD (before a date (included))
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
if ".." in date_spec:
|
||
|
|
(str_start, str_stop) = date_spec.split("..", 1)
|
||
|
|
start = datetime.strptime(str_start, "%Y-%m-%d")
|
||
|
|
stop = datetime.strptime(str_stop, "%Y-%m-%d")
|
||
|
|
elif date_spec.startswith("+"):
|
||
|
|
start = datetime.strptime(date_spec[1:], "%Y-%m-%d")
|
||
|
|
stop = datetime.now()
|
||
|
|
elif date_spec.startswith("-"):
|
||
|
|
start = datetime(1970, 1, 1)
|
||
|
|
stop = datetime.strptime(date_spec[1:], "%Y-%m-%d")
|
||
|
|
else:
|
||
|
|
start = datetime.strptime(date_spec, "%Y-%m-%d")
|
||
|
|
stop = start + timedelta(1)
|
||
|
|
self.selector.lookup_date(start, stop)
|
||
|
|
except ValueError as exc:
|
||
|
|
raise SyntaxError(str(exc))
|
||
|
|
|
||
|
|
def _select_error(self, error_msg):
|
||
|
|
"""
|
||
|
|
Select mails by error message
|
||
|
|
Specified error message can be partial
|
||
|
|
Usage: select error <error_msg>
|
||
|
|
"""
|
||
|
|
self.selector.lookup_error(str(error_msg))
|
||
|
|
|
||
|
|
def _inspect_mails(self, *qids):
|
||
|
|
"""
|
||
|
|
Show mails content
|
||
|
|
Usage: inspect mails <qid> [qid] ...
|
||
|
|
"""
|
||
|
|
mails = self.selector.get_mails_by_qids(qids)
|
||
|
|
if not len(mails):
|
||
|
|
return ['Mail IDs not found']
|
||
|
|
response = []
|
||
|
|
for mail in mails:
|
||
|
|
mail.parse()
|
||
|
|
if len(mail.parse_error):
|
||
|
|
return [mail.parse_error]
|
||
|
|
response.append(mail.show())
|
||
|
|
return response
|
||
|
|
|
||
|
|
def do_show(self, str_arg):
|
||
|
|
"""
|
||
|
|
Generic viewer utility
|
||
|
|
Optionnal modifiers can be provided to alter output:
|
||
|
|
limit <n> display the first n entries
|
||
|
|
sortby <field> [asc|desc] sort output by field asc or desc
|
||
|
|
rankby <field> Produce mails ranking by field
|
||
|
|
Known fields:
|
||
|
|
qid Postqueue mail ID
|
||
|
|
date Mail date
|
||
|
|
sender Mail sender
|
||
|
|
recipients Mail recipients (list, no sort)
|
||
|
|
size Mail size
|
||
|
|
errors Postqueue deferred error messages (list, no sort)
|
||
|
|
"""
|
||
|
|
args = shlex.split(str_arg)
|
||
|
|
if not len(args):
|
||
|
|
return self.help_show()
|
||
|
|
|
||
|
|
sub_cmd = args.pop(0)
|
||
|
|
try:
|
||
|
|
lines = getattr(self, "_show_%s" % sub_cmd)(*args)
|
||
|
|
except (TypeError, AttributeError):
|
||
|
|
self.respond("*** Syntax error: show {0}".format(str_arg))
|
||
|
|
return self.help_show()
|
||
|
|
except SyntaxError as error:
|
||
|
|
# Rewording Python TypeError message for cli display
|
||
|
|
msg = str(error)
|
||
|
|
if "%s()" % sub_cmd in msg:
|
||
|
|
msg = "show command %s" % msg
|
||
|
|
self.respond("*** Syntax error: " + msg)
|
||
|
|
return self.help_show()
|
||
|
|
|
||
|
|
self.respond("\n".join(lines))
|
||
|
|
|
||
|
|
@utils.viewer
|
||
|
|
@utils.ranker
|
||
|
|
@utils.sorter
|
||
|
|
def _show_selected(self):
|
||
|
|
"""
|
||
|
|
Show selected mails
|
||
|
|
Usage: show selected [modifiers]
|
||
|
|
"""
|
||
|
|
return self.selector.mails
|
||
|
|
|
||
|
|
def _show_filters(self):
|
||
|
|
"""
|
||
|
|
Show filters applied on current mails selection
|
||
|
|
Usage: show filters
|
||
|
|
"""
|
||
|
|
if not len(self.selector.filters):
|
||
|
|
return ["No filters applied on current selection"]
|
||
|
|
|
||
|
|
lines = []
|
||
|
|
for idx, pqfilter in enumerate(self.selector.filters):
|
||
|
|
name, _args, _kwargs = pqfilter
|
||
|
|
# name should always be prefixed with lookup_
|
||
|
|
lines.append('%d: select %s:' % (idx, name[7:]))
|
||
|
|
for key in sorted(_kwargs):
|
||
|
|
lines.append(" %s: %s" % (key, _kwargs[key]))
|
||
|
|
return lines
|
||
|
|
|
||
|
|
# Postsuper generic command
|
||
|
|
def __do_super(self, operation):
|
||
|
|
"""Postsuper generic command"""
|
||
|
|
if not self.pstore.loaded_at:
|
||
|
|
return ["The store is not loaded"]
|
||
|
|
if not len(self.selector.mails):
|
||
|
|
return ["No mail selected"]
|
||
|
|
else:
|
||
|
|
func = getattr(self.qcontrol, '%s_messages' % operation)
|
||
|
|
try:
|
||
|
|
resp = func(self.selector.mails)
|
||
|
|
except RuntimeError as exc:
|
||
|
|
return [str(exc)]
|
||
|
|
|
||
|
|
# reloads the data
|
||
|
|
self._store_load()
|
||
|
|
self._select_replay()
|
||
|
|
|
||
|
|
return [resp[-1]]
|
||
|
|
|
||
|
|
def _super_delete(self):
|
||
|
|
"""Deletes the mails in current selection
|
||
|
|
Usage: super delete
|
||
|
|
"""
|
||
|
|
return self.__do_super('delete')
|
||
|
|
|
||
|
|
def _super_hold(self):
|
||
|
|
"""Put on hold the mails in current selection
|
||
|
|
Usage: super hold
|
||
|
|
"""
|
||
|
|
return self.__do_super('hold')
|
||
|
|
|
||
|
|
def _super_release(self):
|
||
|
|
"""Releases from hold the mails in current selection
|
||
|
|
Usage: super release
|
||
|
|
"""
|
||
|
|
return self.__do_super('release')
|
||
|
|
|
||
|
|
def _super_requeue(self):
|
||
|
|
"""requeue the mails in current selection
|
||
|
|
Usage: super requeue
|
||
|
|
"""
|
||
|
|
return self.__do_super('requeue')
|