[1177] | 1 | #! /usr/bin/env python |
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| 2 | # -*- coding: ISO-8859-15 -*- |
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| 3 | |
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| 4 | # CUPSPyKota accounting backend |
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| 5 | # |
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| 6 | # PyKota - Print Quotas for CUPS and LPRng |
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| 7 | # |
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[1257] | 8 | # (c) 2003-2004 Jerome Alet <alet@librelogiciel.com> |
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[1177] | 9 | # This program is free software; you can redistribute it and/or modify |
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| 10 | # it under the terms of the GNU General Public License as published by |
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| 11 | # the Free Software Foundation; either version 2 of the License, or |
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| 12 | # (at your option) any later version. |
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| 13 | # |
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| 14 | # This program is distributed in the hope that it will be useful, |
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| 15 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | # GNU General Public License for more details. |
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| 18 | # |
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| 19 | # You should have received a copy of the GNU General Public License |
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| 20 | # along with this program; if not, write to the Free Software |
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| 21 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
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| 22 | # |
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| 23 | # $Id$ |
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| 24 | # |
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| 25 | # $Log$ |
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[1478] | 26 | # Revision 1.43 2004/05/17 11:46:05 jalet |
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| 27 | # First try at cupspykota's main loop rewrite |
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| 28 | # |
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[1467] | 29 | # Revision 1.42 2004/05/10 11:22:28 jalet |
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| 30 | # Typo |
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| 31 | # |
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[1466] | 32 | # Revision 1.41 2004/05/10 10:07:30 jalet |
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| 33 | # Catches OSError while reading |
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| 34 | # |
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[1465] | 35 | # Revision 1.40 2004/05/10 09:29:48 jalet |
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| 36 | # Should be more robust if we receive a SIGTERM during an I/O operation |
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| 37 | # |
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[1458] | 38 | # Revision 1.39 2004/05/07 14:44:53 jalet |
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| 39 | # Fix for file handles unregistered twice from the polling object |
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| 40 | # |
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[1433] | 41 | # Revision 1.38 2004/04/09 22:24:46 jalet |
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| 42 | # Began work on correct handling of child processes when jobs are cancelled by |
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| 43 | # the user. Especially important when an external requester is running for a |
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| 44 | # long time. |
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| 45 | # |
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[1411] | 46 | # Revision 1.37 2004/03/18 19:11:25 jalet |
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| 47 | # Fix for raw jobs in cupspykota |
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| 48 | # |
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[1410] | 49 | # Revision 1.36 2004/03/18 14:03:18 jalet |
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| 50 | # Added fsync() calls |
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| 51 | # |
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[1405] | 52 | # Revision 1.35 2004/03/16 12:05:01 jalet |
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| 53 | # Small fix for new waitprinter.sh : when job was denied, would wait forever |
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| 54 | # for printer being in printing mode. |
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| 55 | # |
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[1400] | 56 | # Revision 1.34 2004/03/15 10:47:56 jalet |
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| 57 | # This time the traceback formatting should be correct ! |
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| 58 | # |
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[1391] | 59 | # Revision 1.33 2004/03/05 12:46:07 jalet |
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| 60 | # Improve tracebacks |
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| 61 | # |
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[1390] | 62 | # Revision 1.32 2004/03/05 12:31:35 jalet |
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| 63 | # Now should output full traceback when crashing |
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| 64 | # |
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[1375] | 65 | # Revision 1.31 2004/03/01 14:35:56 jalet |
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| 66 | # PYKOTAPHASE wasn't set soon enough at the start of the job |
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| 67 | # |
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[1374] | 68 | # Revision 1.30 2004/03/01 14:34:15 jalet |
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| 69 | # PYKOTAPHASE wasn't set at the right time at the end of data transmission |
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| 70 | # to underlying layer (real backend) |
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| 71 | # |
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[1372] | 72 | # Revision 1.29 2004/03/01 11:23:25 jalet |
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| 73 | # Pre and Post hooks to external commands are available in the cupspykota |
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| 74 | # backend. Forthe pykota filter they will be implemented real soon now. |
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| 75 | # |
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[1365] | 76 | # Revision 1.28 2004/02/26 14:18:07 jalet |
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| 77 | # Should fix the remaining bugs wrt printers groups and users groups. |
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| 78 | # |
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[1335] | 79 | # Revision 1.27 2004/02/04 23:41:27 jalet |
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| 80 | # Should fix the incorrect "backend died abnormally" problem. |
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| 81 | # |
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[1321] | 82 | # Revision 1.26 2004/01/30 16:35:03 jalet |
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| 83 | # Fixes stupid software accounting bug in CUPS backend |
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| 84 | # |
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[1302] | 85 | # Revision 1.25 2004/01/16 17:51:46 jalet |
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| 86 | # Fuck Fuck Fuck !!! |
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| 87 | # |
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[1291] | 88 | # Revision 1.24 2004/01/14 15:52:01 jalet |
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| 89 | # Small fix for job cancelling code. |
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| 90 | # |
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[1289] | 91 | # Revision 1.23 2004/01/13 10:48:28 jalet |
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| 92 | # Small streams polling loop modification. |
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| 93 | # |
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[1285] | 94 | # Revision 1.22 2004/01/12 22:43:40 jalet |
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| 95 | # New formula to compute a job's price |
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| 96 | # |
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[1280] | 97 | # Revision 1.21 2004/01/12 18:17:36 jalet |
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| 98 | # Denied jobs weren't stored into the history anymore, this is now fixed. |
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| 99 | # |
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[1271] | 100 | # Revision 1.20 2004/01/11 23:22:42 jalet |
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| 101 | # Major code refactoring, it's way cleaner, and now allows automated addition |
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| 102 | # of printers on first print. |
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| 103 | # |
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[1257] | 104 | # Revision 1.19 2004/01/08 14:10:32 jalet |
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| 105 | # Copyright year changed. |
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| 106 | # |
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[1256] | 107 | # Revision 1.18 2004/01/07 16:16:32 jalet |
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| 108 | # Better debugging information |
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| 109 | # |
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[1240] | 110 | # Revision 1.17 2003/12/27 16:49:25 uid67467 |
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| 111 | # Should be ok now. |
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| 112 | # |
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| 113 | # Revision 1.17 2003/12/06 08:54:29 jalet |
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| 114 | # Code simplifications. |
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| 115 | # Added many debugging messages. |
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| 116 | # |
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[1222] | 117 | # Revision 1.16 2003/11/26 20:43:29 jalet |
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| 118 | # Inadvertantly introduced a bug, which is fixed. |
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| 119 | # |
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[1221] | 120 | # Revision 1.15 2003/11/26 19:17:35 jalet |
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| 121 | # Printing on a printer not present in the Quota Storage now results |
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| 122 | # in the job being stopped or cancelled depending on the system. |
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| 123 | # |
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[1210] | 124 | # Revision 1.14 2003/11/25 13:25:45 jalet |
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| 125 | # Boolean problem with old Python, replaced with 0 |
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| 126 | # |
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[1203] | 127 | # Revision 1.13 2003/11/23 19:01:35 jalet |
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| 128 | # Job price added to history |
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| 129 | # |
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[1200] | 130 | # Revision 1.12 2003/11/21 14:28:43 jalet |
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| 131 | # More complete job history. |
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| 132 | # |
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[1196] | 133 | # Revision 1.11 2003/11/19 23:19:35 jalet |
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| 134 | # Code refactoring work. |
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| 135 | # Explicit redirection to /dev/null has to be set in external policy now, just |
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| 136 | # like in external mailto. |
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| 137 | # |
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[1191] | 138 | # Revision 1.10 2003/11/18 17:54:24 jalet |
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| 139 | # SIGTERMs are now transmitted to original backends. |
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| 140 | # |
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[1190] | 141 | # Revision 1.9 2003/11/18 14:11:07 jalet |
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| 142 | # Small fix for bizarre urls |
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| 143 | # |
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[1186] | 144 | # Revision 1.8 2003/11/15 14:26:44 jalet |
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| 145 | # General improvements to the documentation. |
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| 146 | # Email address changed in sample configuration file, because |
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| 147 | # I receive low quota messages almost every day... |
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| 148 | # |
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[1185] | 149 | # Revision 1.7 2003/11/14 22:05:12 jalet |
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| 150 | # New CUPS backend fully functionnal. |
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| 151 | # Old CUPS configuration method is now officially deprecated. |
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| 152 | # |
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[1184] | 153 | # Revision 1.6 2003/11/14 20:13:11 jalet |
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| 154 | # We exit the loop too soon. |
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| 155 | # |
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[1183] | 156 | # Revision 1.5 2003/11/14 18:31:27 jalet |
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| 157 | # Not perfect, but seems to work with the poll() loop. |
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| 158 | # |
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[1182] | 159 | # Revision 1.4 2003/11/14 17:04:15 jalet |
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| 160 | # More (untested) work on the CUPS backend. |
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| 161 | # |
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[1180] | 162 | # Revision 1.3 2003/11/12 23:27:44 jalet |
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| 163 | # More work on new backend. This commit may be unstable. |
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| 164 | # |
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[1178] | 165 | # Revision 1.2 2003/11/12 09:33:34 jalet |
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| 166 | # New CUPS backend supports device enumeration |
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| 167 | # |
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[1177] | 168 | # Revision 1.1 2003/11/08 16:05:31 jalet |
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| 169 | # CUPS backend added for people to experiment. |
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| 170 | # |
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| 171 | # |
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| 172 | # |
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| 173 | |
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| 174 | import sys |
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| 175 | import os |
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[1478] | 176 | import fcntl |
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[1182] | 177 | import popen2 |
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[1178] | 178 | import cStringIO |
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| 179 | import shlex |
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[1182] | 180 | import select |
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| 181 | import signal |
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[1291] | 182 | import time |
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[1177] | 183 | |
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[1196] | 184 | from pykota.tool import PyKotaFilterOrBackend, PyKotaToolError |
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[1177] | 185 | from pykota.config import PyKotaConfigError |
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| 186 | from pykota.storage import PyKotaStorageError |
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[1196] | 187 | from pykota.accounter import PyKotaAccounterError |
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| 188 | from pykota.requester import PyKotaRequesterError |
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[1271] | 189 | |
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[1478] | 190 | class PyKotaPopen4(popen2.Popen4) : |
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[1182] | 191 | """Our own class to execute real backends. |
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| 192 | |
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| 193 | Their first argument is different from their path so using |
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| 194 | native popen2.Popen3 would not be feasible. |
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| 195 | """ |
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[1478] | 196 | def __init__(self, cmd, bufsize=-1, arg0=None) : |
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[1182] | 197 | self.arg0 = arg0 |
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[1478] | 198 | popen2.Popen4.__init__(self, cmd, bufsize) |
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[1182] | 199 | |
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| 200 | def _run_child(self, cmd): |
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[1183] | 201 | for i in range(3, 256): # TODO : MAXFD in original popen2 module |
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[1182] | 202 | try: |
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| 203 | os.close(i) |
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| 204 | except OSError: |
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| 205 | pass |
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| 206 | try: |
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| 207 | os.execvpe(cmd[0], [self.arg0 or cmd[0]] + cmd[1:], os.environ) |
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| 208 | finally: |
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| 209 | os._exit(1) |
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| 210 | |
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[1271] | 211 | class PyKotaBackend(PyKotaFilterOrBackend) : |
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| 212 | """A class for the pykota backend.""" |
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| 213 | def acceptJob(self) : |
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| 214 | """Returns the appropriate exit code to tell CUPS all is OK.""" |
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| 215 | return 0 |
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| 216 | |
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| 217 | def removeJob(self) : |
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| 218 | """Returns the appropriate exit code to let CUPS think all is OK. |
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[1177] | 219 | |
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[1271] | 220 | Returning 0 (success) prevents CUPS from stopping the print queue. |
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| 221 | """ |
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| 222 | return 0 |
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[1222] | 223 | |
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[1271] | 224 | def doWork(self, policy, printer, user, userpquota) : |
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| 225 | """Most of the work is done here.""" |
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| 226 | # Two different values possible for policy here : |
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| 227 | # ALLOW means : Either printer, user or user print quota doesn't exist, |
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| 228 | # but the job should be allowed anyway. |
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| 229 | # OK means : Both printer, user and user print quota exist, job should |
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| 230 | # be allowed if current user is allowed to print on this printer |
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| 231 | if policy == "OK" : |
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[1372] | 232 | # exports user information with initial values |
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| 233 | self.exportUserInfo(userpquota) |
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| 234 | |
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[1375] | 235 | # enters first phase |
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| 236 | os.putenv("PYKOTAPHASE", "BEFORE") |
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| 237 | |
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[1372] | 238 | # checks the user's quota |
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[1271] | 239 | action = self.warnUserPQuota(userpquota) |
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[1372] | 240 | |
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| 241 | # exports some new environment variables |
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| 242 | os.putenv("PYKOTAACTION", action) |
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| 243 | |
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| 244 | # launches the pre hook |
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| 245 | self.prehook(userpquota) |
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| 246 | |
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[1271] | 247 | self.logdebug("Job accounting begins.") |
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| 248 | self.accounter.beginJob(userpquota) |
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[1280] | 249 | else : |
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| 250 | action = "ALLOW" |
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[1405] | 251 | os.putenv("PYKOTAACTION", action) |
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[1271] | 252 | |
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| 253 | # pass the job's data to the real backend |
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[1280] | 254 | if action in ["ALLOW", "WARN"] : |
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[1291] | 255 | if self.gotSigTerm : |
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[1280] | 256 | retcode = self.removeJob() |
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| 257 | else : |
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| 258 | retcode = self.handleData() |
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| 259 | else : |
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[1271] | 260 | retcode = self.removeJob() |
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| 261 | |
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| 262 | if policy == "OK" : |
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[1374] | 263 | # indicate phase change |
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| 264 | os.putenv("PYKOTAPHASE", "AFTER") |
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| 265 | |
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[1271] | 266 | # stops accounting. |
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| 267 | self.accounter.endJob(userpquota) |
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| 268 | self.logdebug("Job accounting ends.") |
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| 269 | |
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| 270 | # retrieve the job size |
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[1321] | 271 | if action == "DENY" : |
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| 272 | jobsize = 0 |
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| 273 | self.logdebug("Job size forced to 0 because printing is denied.") |
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| 274 | else : |
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| 275 | jobsize = self.accounter.getJobSize() |
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[1271] | 276 | self.logdebug("Job size : %i" % jobsize) |
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| 277 | |
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| 278 | # update the quota for the current user on this printer |
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[1285] | 279 | self.logdebug("Updating user %s's quota on printer %s" % (user.Name, printer.Name)) |
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| 280 | jobprice = userpquota.increasePagesUsage(jobsize) |
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[1271] | 281 | |
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| 282 | # adds the current job to history |
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| 283 | printer.addJobToHistory(self.jobid, user, self.accounter.getLastPageCounter(), action, jobsize, jobprice, self.preserveinputfile, self.title, self.copies, self.options) |
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| 284 | self.logdebug("Job added to history.") |
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| 285 | |
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[1372] | 286 | # exports some new environment variables |
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| 287 | os.putenv("PYKOTAJOBSIZE", str(jobsize)) |
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| 288 | os.putenv("PYKOTAJOBPRICE", str(jobprice)) |
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| 289 | |
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| 290 | # then re-export user information with new values |
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| 291 | self.exportUserInfo(userpquota) |
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| 292 | |
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| 293 | # Launches the post hook |
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| 294 | self.posthook(userpquota) |
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| 295 | |
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[1271] | 296 | return retcode |
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[1478] | 297 | |
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| 298 | def setNonBlocking(self, fno) : |
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| 299 | """Sets a file handle to be non-blocking.""" |
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| 300 | flags = fcntl.fcntl(fno, fcntl.F_GETFL, 0) |
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| 301 | fcntl.fcntl(fno, fcntl.F_SETFL, flags | os.O_NONBLOCK) |
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| 302 | |
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[1458] | 303 | def unregisterFileNo(self, pollobj, fileno) : |
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| 304 | """Removes a file handle from the polling object.""" |
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| 305 | try : |
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| 306 | pollobj.unregister(fileno) |
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| 307 | except KeyError : |
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| 308 | self.logger.log_message(_("File number %s unregistered twice from polling object, ignored.") % fileno, "warn") |
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| 309 | else : |
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| 310 | self.logdebug("File number %s unregistered from polling object." % fileno) |
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| 311 | |
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[1478] | 312 | def formatFileEvent(self, fd, mask, ins, outs) : |
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| 313 | """Formats file debug info.""" |
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| 314 | try : |
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| 315 | name = ins.get(fd, outs.get(fd))["name"] |
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| 316 | except KeyError : |
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| 317 | self.logdebug("File %s not found in %s or %s" % (fd, repr(ins), repr(outs))) |
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| 318 | else : |
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| 319 | maskval = [] |
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| 320 | if mask & select.POLLIN : |
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| 321 | maskval.append("POLLIN") |
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| 322 | if mask & select.POLLOUT : |
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| 323 | maskval.append("POLLOUT") |
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| 324 | if mask & select.POLLPRI : |
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| 325 | maskval.append("POLLPRI") |
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| 326 | if mask & select.POLLERR : |
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| 327 | maskval.append("POLLERR") |
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| 328 | if mask & select.POLLHUP : |
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| 329 | maskval.append("POLLHUP") |
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| 330 | if mask & select.POLLNVAL : |
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| 331 | maskval.append("POLLNVAL") |
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| 332 | return "%s (%s)" % (name, " | ".join(maskval)) |
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| 333 | |
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[1271] | 334 | def handleData(self) : |
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| 335 | """Pass the job's data to the real backend.""" |
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[1222] | 336 | # Find the real backend pathname |
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[1271] | 337 | realbackend = os.path.join(os.path.split(sys.argv[0])[0], self.originalbackend) |
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[1222] | 338 | |
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| 339 | # And launch it |
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[1271] | 340 | self.logdebug("Starting real backend %s with args %s" % (realbackend, " ".join(['"%s"' % a for a in ([os.environ["DEVICE_URI"]] + sys.argv[1:])]))) |
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[1478] | 341 | subprocess = PyKotaPopen4([realbackend] + sys.argv[1:], bufsize=0, arg0=os.environ["DEVICE_URI"]) |
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[1222] | 342 | |
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| 343 | # Save file descriptors, we will need them later. |
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| 344 | stderrfno = sys.stderr.fileno() |
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| 345 | fromcfno = subprocess.fromchild.fileno() |
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[1478] | 346 | self.setNonBlocking(fromcfno) |
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[1222] | 347 | |
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| 348 | # We will have to be careful when dealing with I/O |
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| 349 | # So we use a poll object to know when to read or write |
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| 350 | pollster = select.poll() |
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| 351 | pollster.register(fromcfno, select.POLLIN | select.POLLPRI) |
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| 352 | |
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[1478] | 353 | instreams = { \ |
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| 354 | fromcfno : { "file" : subprocess.fromchild, "out" : stderrfno, "done" : 0, "name" : "real backend's stdout+stderr" },\ |
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| 355 | } |
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| 356 | |
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| 357 | outstreams = { \ |
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| 358 | stderrfno : { "file" : sys.stderr, "done" : 0, "in" : fromcfno, "name" : "stderr" }, \ |
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| 359 | } |
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| 360 | |
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[1411] | 361 | if self.preserveinputfile is None : |
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[1478] | 362 | # this is not a real file, we read the job's data |
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| 363 | # from stdin and send it on our stdout |
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| 364 | tocfno = subprocess.tochild.fileno() |
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| 365 | stdinfno = sys.stdin.fileno() |
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| 366 | self.setNonBlocking(stdinfno) |
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| 367 | pollster.register(stdinfno, select.POLLIN | select.POLLPRI) |
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| 368 | instreams.update({ stdinfno : { "file": sys.stdin, "out" : tocfno, "done" : 0, "name" : "stdin" }}) |
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| 369 | outstreams.update({ tocfno : { "file" : subprocess.tochild, "done" : 0, "in" : stdinfno, "name" : "real backend's stdin" }}) |
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[1411] | 370 | else : |
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| 371 | # job's data is in a file, no need to pass the data |
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| 372 | # to the real backend |
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[1478] | 373 | self.logdebug("Job's data is in file %s" % self.preserveinputfile) |
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| 374 | |
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[1291] | 375 | killed = 0 |
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[1289] | 376 | status = -1 |
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[1478] | 377 | self.logdebug("Entering streams polling loop...") |
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[1222] | 378 | while status == -1 : |
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[1478] | 379 | # Catches IOErrors caused by interrupted system calls |
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| 380 | try : |
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| 381 | # First check if original backend is still alive |
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| 382 | status = subprocess.poll() |
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| 383 | |
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| 384 | # Now if we got SIGTERM, we have |
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| 385 | # to kill -TERM the original backend |
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| 386 | if self.gotSigTerm and not killed : |
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[1222] | 387 | os.kill(subprocess.pid, signal.SIGTERM) |
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[1291] | 388 | self.logger.log_message(_("SIGTERM was sent to real backend %s (pid: %s)") % (realbackend, subprocess.pid), "info") |
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| 389 | killed = 1 |
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[1478] | 390 | |
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| 391 | # In any case, deal with any remaining I/O |
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| 392 | availablefds = pollster.poll(5000) |
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| 393 | if not availablefds : |
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| 394 | self.logdebug("Nothing to do, sleeping a bit...") |
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| 395 | time.sleep(0.01) # nothing to do, give time to CPU |
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| 396 | else : |
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| 397 | for (fd, mask) in availablefds : |
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| 398 | # self.logdebug(self.formatFileEvent(fd, mask, instreams, outstreams)) |
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| 399 | try : |
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| 400 | if mask & (select.POLLIN | select.POLLPRI) : |
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| 401 | # We have something to read |
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[1465] | 402 | try : |
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[1478] | 403 | fobj = instreams[fd] |
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| 404 | except KeyError : |
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| 405 | self.logdebug("READ : %s" % self.formatFileEvent(fd, mask, instreams, outstreams)) |
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| 406 | else : |
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| 407 | data = fobj["file"].read() |
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| 408 | if not data : |
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| 409 | self.logdebug("No more data to read on %s (read returned nothing)" % fobj["name"]) |
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| 410 | if not fobj["done"] : |
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| 411 | self.unregisterFileNo(pollster, fd) |
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| 412 | fobj["done"] = 1 |
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| 413 | else : |
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| 414 | # self.logdebug("%s -- DATA[%i] <= : %s ..." % (self.formatFileEvent(fd, mask, instreams, outstreams), len(data), data[:50])) |
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| 415 | fout = outstreams[fobj["out"]]["file"] |
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| 416 | fout.write(data) |
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| 417 | fout.flush() |
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| 418 | |
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| 419 | if mask & (select.POLLHUP | select.POLLERR) : |
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| 420 | # Some pipe has no more datas so we don't |
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| 421 | # want to continue to poll this file |
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| 422 | toclose = None |
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[1465] | 423 | try : |
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[1478] | 424 | fobj = instreams[fd] |
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| 425 | if fobj["name"] == "stdin" : |
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| 426 | toclose = outstreams[fobj["out"]] |
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| 427 | self.logdebug("No more data to read from %s (POLLUP or POLLERR received)" % fobj["name"]) |
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| 428 | except KeyError : |
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| 429 | fobj = outstreams[fd] |
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| 430 | if fobj["name"] == "stderr" : |
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| 431 | toclose = instreams[fobj["in"]] |
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| 432 | self.logdebug("No more data to write to %s (POLLUP or POLLERR received)" % fobj["name"]) |
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| 433 | |
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| 434 | if not fobj["done"] : |
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| 435 | self.unregisterFileNo(pollster, fd) |
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| 436 | fobj["done"] = 1 |
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| 437 | if toclose is not None : |
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| 438 | self.logdebug("Closing %s" % toclose["name"]) |
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| 439 | toclose["file"].close() |
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| 440 | |
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| 441 | if mask & select.POLLNVAL : |
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| 442 | self.logdebug("CLOSED : %s" % self.formatFileEvent(fd, mask, instreams, outstreams)) |
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| 443 | |
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| 444 | except IOError, msg : |
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| 445 | self.logdebug("IOError : %s -- %s" % (msg, self.formatFileEvent(fd, mask, instreams, outstreams))) |
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| 446 | time.sleep(0.01) # give some time to the CPU |
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| 447 | except IOError, msg : |
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| 448 | self.logdebug("IOError : %s" % msg) |
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| 449 | time.sleep(0.01) # give some time to the CPU |
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[1191] | 450 | |
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[1271] | 451 | self.logdebug("Exiting streams polling loop...") |
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[1478] | 452 | status = subprocess.wait() # just in case |
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[1222] | 453 | if os.WIFEXITED(status) : |
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| 454 | retcode = os.WEXITSTATUS(status) |
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[1291] | 455 | elif not killed : |
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[1271] | 456 | self.logger.log_message(_("CUPS backend %s died abnormally.") % realbackend, "error") |
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[1222] | 457 | retcode = -1 |
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[1291] | 458 | else : |
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| 459 | retcode = self.removeJob() |
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[1478] | 460 | self.logdebug("Real backend exited with status %s" % status) |
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[1271] | 461 | return retcode |
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[1222] | 462 | |
---|
[1177] | 463 | if __name__ == "__main__" : |
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| 464 | # This is a CUPS backend, we should act and die like a CUPS backend |
---|
| 465 | if len(sys.argv) == 1 : |
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[1178] | 466 | # we will execute each existing backend in device enumeration mode |
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| 467 | # and generate their PyKota accounting counterpart |
---|
| 468 | (directory, myname) = os.path.split(sys.argv[0]) |
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| 469 | for backend in [os.path.join(directory, b) for b in os.listdir(directory) if os.path.isfile(os.path.join(directory, b)) and (b != myname)] : |
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| 470 | answer = os.popen(backend, "r") |
---|
| 471 | try : |
---|
| 472 | devices = [line.strip() for line in answer.readlines()] |
---|
| 473 | except : |
---|
| 474 | devices = [] |
---|
| 475 | status = answer.close() |
---|
| 476 | if status is None : |
---|
| 477 | for d in devices : |
---|
[1180] | 478 | # each line is of the form : 'xxxx xxxx "xxxx xxx" "xxxx xxx"' |
---|
| 479 | # so we have to decompose it carefully |
---|
[1178] | 480 | fdevice = cStringIO.StringIO("%s" % d) |
---|
| 481 | tokenizer = shlex.shlex(fdevice) |
---|
| 482 | tokenizer.wordchars = tokenizer.wordchars + r".:,?!~/\_$*-+={}[]()#" |
---|
| 483 | arguments = [] |
---|
| 484 | while 1 : |
---|
| 485 | token = tokenizer.get_token() |
---|
| 486 | if token : |
---|
| 487 | arguments.append(token) |
---|
| 488 | else : |
---|
| 489 | break |
---|
| 490 | fdevice.close() |
---|
[1180] | 491 | try : |
---|
| 492 | (devicetype, device, name, fullname) = arguments |
---|
| 493 | except ValueError : |
---|
| 494 | pass # ignore this 'bizarre' device |
---|
| 495 | else : |
---|
| 496 | if name.startswith('"') and name.endswith('"') : |
---|
| 497 | name = name[1:-1] |
---|
| 498 | if fullname.startswith('"') and fullname.endswith('"') : |
---|
| 499 | fullname = fullname[1:-1] |
---|
[1191] | 500 | print '%s cupspykota:%s "PyKota+%s" "PyKota managed %s"' % (devicetype, device, name, fullname) |
---|
[1177] | 501 | retcode = 0 |
---|
| 502 | elif len(sys.argv) not in (6, 7) : |
---|
| 503 | sys.stderr.write("ERROR: %s job-id user title copies options [file]\n" % sys.argv[0]) |
---|
| 504 | retcode = 1 |
---|
| 505 | else : |
---|
| 506 | try : |
---|
| 507 | # Initializes the backend |
---|
[1271] | 508 | kotabackend = PyKotaBackend() |
---|
| 509 | retcode = kotabackend.mainWork() |
---|
[1196] | 510 | except (PyKotaToolError, PyKotaConfigError, PyKotaStorageError, PyKotaAccounterError, PyKotaRequesterError, AttributeError, KeyError, IndexError, ValueError, TypeError, IOError), msg : |
---|
[1390] | 511 | import traceback |
---|
[1400] | 512 | mm = [((f.endswith('\n') and f) or (f + '\n')) for f in traceback.format_exception(*sys.exc_info())] |
---|
| 513 | sys.stderr.write("ERROR : cupspykota backend failed (%s)\n%s" % (msg, "ERROR : ".join(mm))) |
---|
[1177] | 514 | sys.stderr.flush() |
---|
| 515 | retcode = 1 |
---|
| 516 | |
---|
| 517 | try : |
---|
| 518 | kotabackend.storage.close() |
---|
| 519 | except (TypeError, NameError, AttributeError) : |
---|
| 520 | pass |
---|
| 521 | |
---|
| 522 | sys.exit(retcode) |
---|