[1952] | 1 | #! /usr/bin/env python |
---|
| 2 | # -*- coding: ISO-8859-15 -*- |
---|
| 3 | |
---|
| 4 | # An email gateway for PyKota |
---|
| 5 | # |
---|
| 6 | # PyKota - Print Quotas for CUPS and LPRng |
---|
| 7 | # |
---|
| 8 | # (c) 2003-2004 Jerome Alet <alet@librelogiciel.com> |
---|
| 9 | # This program is free software; you can redistribute it and/or modify |
---|
| 10 | # it under the terms of the GNU General Public License as published by |
---|
| 11 | # the Free Software Foundation; either version 2 of the License, or |
---|
| 12 | # (at your option) any later version. |
---|
| 13 | # |
---|
| 14 | # This program is distributed in the hope that it will be useful, |
---|
| 15 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
| 17 | # GNU General Public License for more details. |
---|
| 18 | # |
---|
| 19 | # You should have received a copy of the GNU General Public License |
---|
| 20 | # along with this program; if not, write to the Free Software |
---|
| 21 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
---|
| 22 | # |
---|
| 23 | # $Id$ |
---|
| 24 | # |
---|
| 25 | # $Log$ |
---|
| 26 | # Revision 1.1 2004/11/21 21:50:03 jalet |
---|
| 27 | # Introduced the new pkmail command as a simple email gateway |
---|
| 28 | # |
---|
| 29 | |
---|
| 30 | import sys |
---|
| 31 | import os |
---|
| 32 | import popen2 |
---|
| 33 | import smtplib |
---|
| 34 | import email |
---|
| 35 | |
---|
| 36 | from pykota.tool import PyKotaTool, PyKotaToolError, crashed, N_ |
---|
| 37 | from pykota.pdlanalyzer import PDLAnalyzer, PDLAnalyzerError |
---|
| 38 | |
---|
| 39 | __doc__ = N_("""pkmail v%s (c) 2003-2004 C@LL - Conseil Internet & Logiciels Libres |
---|
| 40 | |
---|
| 41 | Email gateway for PyKota. |
---|
| 42 | |
---|
| 43 | command line usage : |
---|
| 44 | |
---|
| 45 | pkmail [options] |
---|
| 46 | |
---|
| 47 | options : |
---|
| 48 | |
---|
| 49 | -v | --version Prints pkmail's version number then exits. |
---|
| 50 | -h | --help Prints this message then exits. |
---|
| 51 | |
---|
| 52 | |
---|
| 53 | This command is meant to be used from your mail server's aliases file, |
---|
| 54 | as a pipe. It will then accept commands send to it in email messages, |
---|
| 55 | and will send the answer to the command's originator. |
---|
| 56 | |
---|
| 57 | To use this command, create an email alias in /etc/aliases with |
---|
| 58 | the following format : |
---|
| 59 | |
---|
| 60 | pykotacmd: "|/usr/bin/pkmail" |
---|
| 61 | |
---|
| 62 | Then run the 'newaliases' command to regenerate the aliases database. |
---|
| 63 | |
---|
| 64 | You can now send commands by email to 'pykotacmd@yourdomain.com', with |
---|
| 65 | the command in the subject. |
---|
| 66 | |
---|
| 67 | List of supported commands : |
---|
| 68 | |
---|
| 69 | report [username] |
---|
| 70 | |
---|
| 71 | NB : For pkmail to work correctly, you may have to put the 'mail' |
---|
| 72 | system user in the 'lpadmin' system group to ensure this user can |
---|
| 73 | read the /etc/pykota/pykotadmin.conf file, and restart your |
---|
| 74 | mail server (e.g. /etc/init.d/exim restart). It is strongly advised |
---|
| 75 | that you think at least twice before doing this though. |
---|
| 76 | |
---|
| 77 | Use at your own risk ! |
---|
| 78 | |
---|
| 79 | This program is free software; you can redistribute it and/or modify |
---|
| 80 | it under the terms of the GNU General Public License as published by |
---|
| 81 | the Free Software Foundation; either version 2 of the License, or |
---|
| 82 | (at your option) any later version. |
---|
| 83 | |
---|
| 84 | This program is distributed in the hope that it will be useful, |
---|
| 85 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 86 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
| 87 | GNU General Public License for more details. |
---|
| 88 | |
---|
| 89 | You should have received a copy of the GNU General Public License |
---|
| 90 | along with this program; if not, write to the Free Software |
---|
| 91 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
---|
| 92 | |
---|
| 93 | Please e-mail bugs to: %s""") |
---|
| 94 | |
---|
| 95 | |
---|
| 96 | class PKMail(PyKotaTool) : |
---|
| 97 | """A class for pkmail.""" |
---|
| 98 | def main(self, files, options) : |
---|
| 99 | """Accepts commands passed in an email message.""" |
---|
| 100 | data = sys.stdin.read() |
---|
| 101 | message = email.message_from_string(data) |
---|
| 102 | useremail = message["From"] |
---|
| 103 | whoami = message["To"] |
---|
| 104 | cmdargs = message["Subject"].split() |
---|
| 105 | try : |
---|
| 106 | (command, arguments) = (cmdargs[0].capitalize(), cmdargs[1:]) |
---|
| 107 | except IndexError : |
---|
| 108 | raise PyKotaToolError, "No command found !" |
---|
| 109 | |
---|
| 110 | self.logdebug("Launching internal command '%s' with arguments %s" % (command, arguments)) |
---|
| 111 | cmdfunc = getattr(self, "cmd%s" % command, self.cmdDefault) |
---|
| 112 | result = cmdfunc(arguments) |
---|
| 113 | |
---|
| 114 | self.logdebug("Sending answer to : %s" % useremail) |
---|
| 115 | server = smtplib.SMTP(self.smtpserver) |
---|
| 116 | server.sendmail(whoami, [ useremail ], "From: %s\nTo: %s\nSubject: Result of your commands\n\n%s\n" % (whoami, useremail, result)) |
---|
| 117 | server.quit() |
---|
| 118 | self.logdebug("Answer sent to : %s" % useremail) |
---|
| 119 | |
---|
| 120 | return 0 |
---|
| 121 | |
---|
| 122 | def runCommand(self, cmd) : |
---|
| 123 | """Executes a command.""" |
---|
| 124 | self.logdebug("Launching : '%s'" % cmd) |
---|
| 125 | os.environ["PATH"] = "%s:/bin:/usr/bin:/usr/local/bin:/opt/bin:/sbin:/usr/sbin" % os.environ.get("PATH", "") |
---|
| 126 | child = popen2.Popen3(cmd) |
---|
| 127 | child.tochild.close() |
---|
| 128 | result = child.fromchild.read() |
---|
| 129 | status = child.wait() |
---|
| 130 | if os.WIFEXITED(status) : |
---|
| 131 | status = os.WEXITSTATUS(status) |
---|
| 132 | self.logdebug("'%s' exited with status %s" % (cmd, status)) |
---|
| 133 | return result |
---|
| 134 | |
---|
| 135 | def cmdDefault(self, arguments) : |
---|
| 136 | """Default command : sends an 'unknown command' message.""" |
---|
| 137 | return "Unknown command." |
---|
| 138 | |
---|
| 139 | def cmdReport(self, args) : |
---|
| 140 | """Generates a print quota report.""" |
---|
| 141 | return self.runCommand("repykota %s" % ' '.join([ '"%s"' % a for a in args ])) |
---|
| 142 | |
---|
| 143 | if __name__ == "__main__" : |
---|
| 144 | retcode = 0 |
---|
| 145 | try : |
---|
| 146 | defaults = { \ |
---|
| 147 | } |
---|
| 148 | short_options = "vh" |
---|
| 149 | long_options = ["help", "version"] |
---|
| 150 | |
---|
| 151 | # Initializes the command line tool |
---|
| 152 | mailparser = PKMail(doc=__doc__) |
---|
| 153 | |
---|
| 154 | # parse and checks the command line |
---|
| 155 | (options, args) = mailparser.parseCommandline(sys.argv[1:], short_options, long_options, allownothing=1) |
---|
| 156 | |
---|
| 157 | # sets long options |
---|
| 158 | options["help"] = options["h"] or options["help"] |
---|
| 159 | options["version"] = options["v"] or options["version"] |
---|
| 160 | |
---|
| 161 | if options["help"] : |
---|
| 162 | mailparser.display_usage_and_quit() |
---|
| 163 | elif options["version"] : |
---|
| 164 | mailparser.display_version_and_quit() |
---|
| 165 | else : |
---|
| 166 | retcode = mailparser.main(args, options) |
---|
| 167 | except SystemExit : |
---|
| 168 | pass |
---|
| 169 | except : |
---|
| 170 | try : |
---|
| 171 | mailparser.crashed("pkmail failed") |
---|
| 172 | except : |
---|
| 173 | crashed("pkmail failed") |
---|
| 174 | retcode = -1 |
---|
| 175 | |
---|
| 176 | try : |
---|
| 177 | mailparser.storage.close() |
---|
| 178 | except (TypeError, NameError, AttributeError) : |
---|
| 179 | pass |
---|
| 180 | |
---|
| 181 | sys.exit(retcode) |
---|