[695] | 1 | # PyKota |
---|
| 2 | # |
---|
| 3 | # PyKota : Print Quotas for CUPS |
---|
| 4 | # |
---|
| 5 | # (c) 2003 Jerome Alet <alet@librelogiciel.com> |
---|
| 6 | # You're welcome to redistribute this software under the |
---|
| 7 | # terms of the GNU General Public Licence version 2.0 |
---|
| 8 | # or, at your option, any higher version. |
---|
| 9 | # |
---|
| 10 | # You can read the complete GNU GPL in the file COPYING |
---|
| 11 | # which should come along with this software, or visit |
---|
| 12 | # the Free Software Foundation's WEB site http://www.fsf.org |
---|
| 13 | # |
---|
| 14 | # $Id$ |
---|
| 15 | # |
---|
| 16 | # $Log$ |
---|
[786] | 17 | # Revision 1.12 2003/02/10 10:36:33 jalet |
---|
| 18 | # Small problem wrt external requester |
---|
| 19 | # |
---|
[785] | 20 | # Revision 1.11 2003/02/10 08:50:45 jalet |
---|
| 21 | # External requester seems to be finally ok now |
---|
| 22 | # |
---|
[783] | 23 | # Revision 1.10 2003/02/10 08:19:57 jalet |
---|
| 24 | # tell ConfigParser to return raw data, this allows our own strings |
---|
| 25 | # interpolations in the requester |
---|
| 26 | # |
---|
[781] | 27 | # Revision 1.9 2003/02/10 00:44:38 jalet |
---|
| 28 | # Typos |
---|
| 29 | # |
---|
[780] | 30 | # Revision 1.8 2003/02/10 00:42:17 jalet |
---|
| 31 | # External requester should be ok (untested) |
---|
| 32 | # New syntax for configuration file wrt requesters |
---|
| 33 | # |
---|
[773] | 34 | # Revision 1.7 2003/02/09 13:05:43 jalet |
---|
| 35 | # Internationalization continues... |
---|
| 36 | # |
---|
[747] | 37 | # Revision 1.6 2003/02/07 22:00:09 jalet |
---|
| 38 | # Bad cut&paste |
---|
| 39 | # |
---|
[731] | 40 | # Revision 1.5 2003/02/06 23:58:05 jalet |
---|
| 41 | # repykota should be ok |
---|
| 42 | # |
---|
[713] | 43 | # Revision 1.4 2003/02/06 09:19:02 jalet |
---|
| 44 | # More robust behavior (hopefully) when the user or printer is not managed |
---|
| 45 | # correctly by the Quota System : e.g. cupsFilter added in ppd file, but |
---|
| 46 | # printer and/or user not 'yet?' in storage. |
---|
| 47 | # |
---|
[708] | 48 | # Revision 1.3 2003/02/05 23:26:22 jalet |
---|
| 49 | # Incorrect handling of grace delay |
---|
| 50 | # |
---|
[707] | 51 | # Revision 1.2 2003/02/05 23:09:20 jalet |
---|
| 52 | # Name conflict |
---|
| 53 | # |
---|
[695] | 54 | # Revision 1.1 2003/02/05 21:28:17 jalet |
---|
| 55 | # Initial import into CVS |
---|
| 56 | # |
---|
| 57 | # |
---|
| 58 | # |
---|
| 59 | |
---|
| 60 | import sys |
---|
| 61 | import os |
---|
| 62 | import ConfigParser |
---|
| 63 | |
---|
| 64 | class PyKotaConfigError(Exception): |
---|
| 65 | """An exception for PyKota config related stuff.""" |
---|
| 66 | def __init__(self, message = ""): |
---|
| 67 | self.message = message |
---|
| 68 | Exception.__init__(self, message) |
---|
| 69 | def __repr__(self): |
---|
| 70 | return self.message |
---|
| 71 | __str__ = __repr__ |
---|
| 72 | |
---|
| 73 | class PyKotaConfig : |
---|
| 74 | """A class to deal with PyKota's configuration.""" |
---|
| 75 | def __init__(self, directory) : |
---|
| 76 | """Reads and checks the configuration file.""" |
---|
| 77 | self.filename = os.path.join(directory, "pykota.conf") |
---|
| 78 | self.config = ConfigParser.ConfigParser() |
---|
| 79 | self.config.read([self.filename]) |
---|
| 80 | self.checkConfiguration() |
---|
| 81 | |
---|
| 82 | def checkConfiguration(self) : |
---|
| 83 | """Checks if configuration is correct. |
---|
| 84 | |
---|
| 85 | raises PyKotaConfigError in case a problem is detected |
---|
| 86 | """ |
---|
| 87 | for option in [ "storagebackend", "storageserver", \ |
---|
| 88 | "storagename", "storageadmin", \ |
---|
| 89 | "storageuser", # TODO : "storageadminpw", "storageusepw", \ |
---|
| 90 | "logger", "admin", "adminmail", |
---|
| 91 | "smtpserver", "method", "gracedelay" ] : |
---|
| 92 | if not self.config.has_option("global", option) : |
---|
[773] | 93 | raise PyKotaConfigError, _("Option %s not found in section global of %s") % (option, self.filename) |
---|
[695] | 94 | |
---|
| 95 | # more precise checks |
---|
[707] | 96 | validloggers = [ "stderr", "system" ] |
---|
[783] | 97 | if self.config.get("global", "logger", raw=1).lower() not in validloggers : |
---|
[773] | 98 | raise PyKotaConfigError, _("Option logger only supports values in %s") % str(validloggers) |
---|
[695] | 99 | |
---|
| 100 | validmethods = [ "lazy" ] # TODO add more methods |
---|
[783] | 101 | if self.config.get("global", "method", raw=1).lower() not in validmethods : |
---|
[773] | 102 | raise PyKotaConfigError, _("Option method only supports values in %s") % str(validmethods) |
---|
[695] | 103 | |
---|
| 104 | # check all printers now |
---|
| 105 | for printer in self.getPrinterNames() : |
---|
| 106 | for poption in [ "requester", "policy" ] : |
---|
| 107 | if not self.config.has_option(printer, poption) : |
---|
[773] | 108 | raise PyKotaConfigError, _("Option %s not found in section %s of %s") % (option, printer, self.filename) |
---|
[695] | 109 | |
---|
[713] | 110 | validpolicies = [ "ALLOW", "DENY" ] |
---|
[783] | 111 | if self.config.get(printer, "policy", raw=1).upper() not in validpolicies : |
---|
[773] | 112 | raise PyKotaConfigError, _("Option policy in section %s only supports values in %s") % (printer, str(validpolicies)) |
---|
[695] | 113 | |
---|
[780] | 114 | validrequesters = [ "snmp", "external" ] # TODO : add more requesters |
---|
[783] | 115 | fullrequester = self.config.get(printer, "requester", raw=1) |
---|
[780] | 116 | try : |
---|
[785] | 117 | (requester, args) = [x.strip() for x in fullrequester.split('(', 1)] |
---|
[780] | 118 | except ValueError : |
---|
[785] | 119 | raise PyKotaConfigError, _("Invalid requester %s for printer %s") % (fullrequester, printer) |
---|
[780] | 120 | else : |
---|
| 121 | if requester not in validrequesters : |
---|
| 122 | raise PyKotaConfigError, _("Option requester for printer %s only supports values in %s") % (printer, str(validrequesters)) |
---|
[695] | 123 | |
---|
| 124 | def getPrinterNames(self) : |
---|
| 125 | """Returns the list of configured printers, i.e. all sections names minus 'global'.""" |
---|
| 126 | return [pname for pname in self.config.sections() if pname != "global"] |
---|
| 127 | |
---|
| 128 | def getStorageBackend(self) : |
---|
| 129 | """Returns the storage backend information as a tuple. |
---|
| 130 | |
---|
| 131 | The tuple has the form : |
---|
| 132 | |
---|
| 133 | (backend, host, database, admin, user) |
---|
| 134 | """ |
---|
| 135 | backendinfo = [] |
---|
| 136 | for option in [ "storagebackend", "storageserver", \ |
---|
| 137 | "storagename", "storageadmin", \ |
---|
| 138 | "storageuser", # TODO : "storageadminpw", "storageusepw", \ |
---|
| 139 | ] : |
---|
[783] | 140 | backendinfo.append(self.config.get("global", option, raw=1)) |
---|
[695] | 141 | return tuple(backendinfo) |
---|
| 142 | |
---|
| 143 | def getLoggingBackend(self) : |
---|
| 144 | """Returns the logging backend information.""" |
---|
[783] | 145 | return self.config.get("global", "logger", raw=1).lower() |
---|
[695] | 146 | |
---|
| 147 | def getRequesterBackend(self, printer) : |
---|
[780] | 148 | """Returns the requester backend to use for a given printer, with its arguments.""" |
---|
[783] | 149 | fullrequester = self.config.get(printer, "requester", raw=1) |
---|
[786] | 150 | (requester, args) = [x.strip() for x in fullrequester.split('(', 1)] |
---|
[780] | 151 | if args.endswith(')') : |
---|
| 152 | args = args[:-1] |
---|
| 153 | args = [x.strip() for x in args.split(',')] |
---|
| 154 | if not args : |
---|
[786] | 155 | raise PyKotaConfigError, _("Invalid requester %s for printer %s") % (fullrequester, printer) |
---|
[780] | 156 | return (requester, args) |
---|
[695] | 157 | |
---|
| 158 | def getPrinterPolicy(self, printer) : |
---|
| 159 | """Returns the default policy for the current printer.""" |
---|
[783] | 160 | return self.config.get(printer, "policy", raw=1).upper() |
---|
[695] | 161 | |
---|
| 162 | def getSMTPServer(self) : |
---|
| 163 | """Returns the SMTP server to use to send messages to users.""" |
---|
[783] | 164 | return self.config.get("global", "smtpserver", raw=1) |
---|
[695] | 165 | |
---|
| 166 | def getAdminMail(self) : |
---|
| 167 | """Returns the Email address of the Print Quota Administrator.""" |
---|
[783] | 168 | return self.config.get("global", "adminmail", raw=1) |
---|
[695] | 169 | |
---|
| 170 | def getAdmin(self) : |
---|
| 171 | """Returns the full name of the Print Quota Administrator.""" |
---|
[783] | 172 | return self.config.get("global", "admin", raw=1) |
---|
[708] | 173 | |
---|
| 174 | def getGraceDelay(self) : |
---|
| 175 | """Returns the grace delay in days.""" |
---|
[783] | 176 | gd = self.config.get("global", "gracedelay", raw=1) |
---|
[731] | 177 | try : |
---|
| 178 | return int(gd) |
---|
| 179 | except ValueError : |
---|
[773] | 180 | raise PyKotaConfigError, _("Invalid grace delay %s") % gd |
---|