| 1 | # PyKota |
|---|
| 2 | # -*- coding: ISO-8859-15 -*- |
|---|
| 3 | |
|---|
| 4 | # PyKota - Print Quotas for CUPS and LPRng |
|---|
| 5 | # |
|---|
| 6 | # (c) 2003, 2004, 2005, 2006, 2007 Jerome Alet <alet@librelogiciel.com> |
|---|
| 7 | # This program is free software; you can redistribute it and/or modify |
|---|
| 8 | # it under the terms of the GNU General Public License as published by |
|---|
| 9 | # the Free Software Foundation; either version 2 of the License, or |
|---|
| 10 | # (at your option) any later version. |
|---|
| 11 | # |
|---|
| 12 | # This program is distributed in the hope that it will be useful, |
|---|
| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|---|
| 15 | # GNU General Public License for more details. |
|---|
| 16 | # |
|---|
| 17 | # You should have received a copy of the GNU General Public License |
|---|
| 18 | # along with this program; if not, write to the Free Software |
|---|
| 19 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
|---|
| 20 | # |
|---|
| 21 | # $Id$ |
|---|
| 22 | # |
|---|
| 23 | # |
|---|
| 24 | |
|---|
| 25 | """This module defines the base classes for PyKota command line tools.""" |
|---|
| 26 | |
|---|
| 27 | import sys |
|---|
| 28 | import os |
|---|
| 29 | import pwd |
|---|
| 30 | import fnmatch |
|---|
| 31 | import getopt |
|---|
| 32 | import smtplib |
|---|
| 33 | import gettext |
|---|
| 34 | import locale |
|---|
| 35 | import socket |
|---|
| 36 | import time |
|---|
| 37 | from email.MIMEText import MIMEText |
|---|
| 38 | from email.Header import Header |
|---|
| 39 | import email.Utils |
|---|
| 40 | |
|---|
| 41 | from mx import DateTime |
|---|
| 42 | |
|---|
| 43 | try : |
|---|
| 44 | import chardet |
|---|
| 45 | except ImportError : |
|---|
| 46 | def detectCharset(text) : |
|---|
| 47 | """Fakes a charset detection if the chardet module is not installed.""" |
|---|
| 48 | return "ISO-8859-15" |
|---|
| 49 | else : |
|---|
| 50 | def detectCharset(text) : |
|---|
| 51 | """Uses the chardet module to workaround CUPS lying to us.""" |
|---|
| 52 | return chardet.detect(text)["encoding"] |
|---|
| 53 | |
|---|
| 54 | from pykota import config, storage, logger |
|---|
| 55 | from pykota.version import __version__, __author__, __years__, __gplblurb__ |
|---|
| 56 | |
|---|
| 57 | def N_(message) : |
|---|
| 58 | """Fake translation marker for translatable strings extraction.""" |
|---|
| 59 | return message |
|---|
| 60 | |
|---|
| 61 | class PyKotaToolError(Exception): |
|---|
| 62 | """An exception for PyKota related stuff.""" |
|---|
| 63 | def __init__(self, message = ""): |
|---|
| 64 | self.message = message |
|---|
| 65 | Exception.__init__(self, message) |
|---|
| 66 | def __repr__(self): |
|---|
| 67 | return self.message |
|---|
| 68 | __str__ = __repr__ |
|---|
| 69 | |
|---|
| 70 | class PyKotaCommandLineError(PyKotaToolError) : |
|---|
| 71 | """An exception for Pykota command line tools.""" |
|---|
| 72 | pass |
|---|
| 73 | |
|---|
| 74 | def crashed(message="Bug in PyKota") : |
|---|
| 75 | """Minimal crash method.""" |
|---|
| 76 | import traceback |
|---|
| 77 | lines = [] |
|---|
| 78 | for line in traceback.format_exception(*sys.exc_info()) : |
|---|
| 79 | lines.extend([l for l in line.split("\n") if l]) |
|---|
| 80 | msg = "ERROR: ".join(["%s\n" % l for l in (["ERROR: PyKota v%s" % __version__, message] + lines)]) |
|---|
| 81 | sys.stderr.write(msg) |
|---|
| 82 | sys.stderr.flush() |
|---|
| 83 | return msg |
|---|
| 84 | |
|---|
| 85 | class Percent : |
|---|
| 86 | """A class to display progress.""" |
|---|
| 87 | def __init__(self, app, size=None) : |
|---|
| 88 | """Initializes the engine.""" |
|---|
| 89 | self.app = app |
|---|
| 90 | self.size = None |
|---|
| 91 | if size : |
|---|
| 92 | self.setSize(size) |
|---|
| 93 | self.previous = None |
|---|
| 94 | self.before = time.time() |
|---|
| 95 | |
|---|
| 96 | def setSize(self, size) : |
|---|
| 97 | """Sets the total size.""" |
|---|
| 98 | self.number = 0 |
|---|
| 99 | self.size = size |
|---|
| 100 | if size : |
|---|
| 101 | self.factor = 100.0 / float(size) |
|---|
| 102 | |
|---|
| 103 | def display(self, msg) : |
|---|
| 104 | """Displays the value.""" |
|---|
| 105 | self.app.display(msg) |
|---|
| 106 | |
|---|
| 107 | def oneMore(self) : |
|---|
| 108 | """Increments internal counter.""" |
|---|
| 109 | if self.size : |
|---|
| 110 | self.number += 1 |
|---|
| 111 | percent = "%.02f" % (float(self.number) * self.factor) |
|---|
| 112 | if percent != self.previous : # optimize for large number of items |
|---|
| 113 | self.display("\r%s%%" % percent) |
|---|
| 114 | self.previous = percent |
|---|
| 115 | |
|---|
| 116 | def done(self) : |
|---|
| 117 | """Displays the 'done' message.""" |
|---|
| 118 | after = time.time() |
|---|
| 119 | if self.size : |
|---|
| 120 | speed = self.size / (after - self.before) |
|---|
| 121 | self.display("\r100.00%%\r \r%s. %s : %.2f %s.\n" \ |
|---|
| 122 | % (_("Done"), _("Average speed"), speed, _("entries per second"))) |
|---|
| 123 | else : |
|---|
| 124 | self.display("\r100.00%%\r \r%s.\n" % _("Done")) |
|---|
| 125 | |
|---|
| 126 | class Tool : |
|---|
| 127 | """Base class for tools with no database access.""" |
|---|
| 128 | def __init__(self, lang="", charset=None, doc="PyKota v%(__version__)s (c) %(__years__)s %(__author__)s") : |
|---|
| 129 | """Initializes the command line tool.""" |
|---|
| 130 | # did we drop priviledges ? |
|---|
| 131 | self.privdropped = 0 |
|---|
| 132 | |
|---|
| 133 | # locale stuff |
|---|
| 134 | try : |
|---|
| 135 | locale.setlocale(locale.LC_ALL, (lang, charset)) |
|---|
| 136 | except (locale.Error, IOError) : |
|---|
| 137 | locale.setlocale(locale.LC_ALL, None) |
|---|
| 138 | (self.language, self.charset) = locale.getlocale() |
|---|
| 139 | self.language = self.language or "C" |
|---|
| 140 | try : |
|---|
| 141 | self.charset = self.charset or locale.getpreferredencoding() |
|---|
| 142 | except locale.Error : |
|---|
| 143 | self.charset = sys.getfilesystemencoding() |
|---|
| 144 | |
|---|
| 145 | # Dirty hack : if the charset is ASCII, we can safely use UTF-8 instead |
|---|
| 146 | # This has the advantage of allowing transparent support for recent |
|---|
| 147 | # versions of CUPS which (en-)force charset to UTF-8 when printing. |
|---|
| 148 | # This should be needed only when printing, but is probably (?) safe |
|---|
| 149 | # to do when using interactive commands. |
|---|
| 150 | if self.charset.upper() in ('ASCII', 'ANSI_X3.4-1968') : |
|---|
| 151 | self.charset = "UTF-8" |
|---|
| 152 | |
|---|
| 153 | # translation stuff |
|---|
| 154 | try : |
|---|
| 155 | try : |
|---|
| 156 | trans = gettext.translation("pykota", languages=["%s.%s" % (self.language, self.charset)], codeset=self.charset) |
|---|
| 157 | except TypeError : # Python <2.4 |
|---|
| 158 | trans = gettext.translation("pykota", languages=["%s.%s" % (self.language, self.charset)]) |
|---|
| 159 | trans.install() |
|---|
| 160 | except : |
|---|
| 161 | gettext.NullTranslations().install() |
|---|
| 162 | |
|---|
| 163 | # pykota specific stuff |
|---|
| 164 | self.documentation = doc |
|---|
| 165 | |
|---|
| 166 | def deferredInit(self) : |
|---|
| 167 | """Deferred initialization.""" |
|---|
| 168 | confdir = os.environ.get("PYKOTA_HOME") |
|---|
| 169 | environHome = True |
|---|
| 170 | missingUser = False |
|---|
| 171 | if confdir is None : |
|---|
| 172 | environHome = False |
|---|
| 173 | # check for config files in the 'pykota' user's home directory. |
|---|
| 174 | try : |
|---|
| 175 | self.pykotauser = pwd.getpwnam("pykota") |
|---|
| 176 | confdir = self.pykotauser[5] |
|---|
| 177 | except KeyError : |
|---|
| 178 | self.pykotauser = None |
|---|
| 179 | confdir = "/etc/pykota" |
|---|
| 180 | missingUser = True |
|---|
| 181 | |
|---|
| 182 | self.config = config.PyKotaConfig(confdir) |
|---|
| 183 | self.debug = self.config.getDebug() |
|---|
| 184 | self.smtpserver = self.config.getSMTPServer() |
|---|
| 185 | self.maildomain = self.config.getMailDomain() |
|---|
| 186 | self.logger = logger.openLogger(self.config.getLoggingBackend()) |
|---|
| 187 | |
|---|
| 188 | # now drop priviledge if possible |
|---|
| 189 | self.dropPriv() |
|---|
| 190 | |
|---|
| 191 | # We NEED this here, even when not in an accounting filter/backend |
|---|
| 192 | self.softwareJobSize = 0 |
|---|
| 193 | self.softwareJobPrice = 0.0 |
|---|
| 194 | |
|---|
| 195 | if environHome : |
|---|
| 196 | self.printInfo("PYKOTA_HOME environment variable is set. Configuration files were searched in %s" % confdir, "info") |
|---|
| 197 | else : |
|---|
| 198 | if missingUser : |
|---|
| 199 | self.printInfo("The 'pykota' system account is missing. Configuration files were searched in %s instead." % confdir, "warn") |
|---|
| 200 | |
|---|
| 201 | self.logdebug("Language in use : %s" % self.language) |
|---|
| 202 | self.logdebug("Charset in use : %s" % self.charset) |
|---|
| 203 | |
|---|
| 204 | arguments = " ".join(['"%s"' % arg for arg in sys.argv]) |
|---|
| 205 | self.logdebug("Command line arguments : %s" % arguments) |
|---|
| 206 | |
|---|
| 207 | def dropPriv(self) : |
|---|
| 208 | """Drops priviledges.""" |
|---|
| 209 | uid = os.geteuid() |
|---|
| 210 | try : |
|---|
| 211 | self.originalUserName = pwd.getpwuid(uid)[0] |
|---|
| 212 | except (KeyError, IndexError), msg : |
|---|
| 213 | self.printInfo(_("Strange problem with uid(%s) : %s") % (uid, msg), "warn") |
|---|
| 214 | self.originalUserName = None |
|---|
| 215 | else : |
|---|
| 216 | if uid : |
|---|
| 217 | self.logdebug(_("Running as user '%s'.") % self.originalUserName) |
|---|
| 218 | else : |
|---|
| 219 | if self.pykotauser is None : |
|---|
| 220 | self.logdebug(_("No user named 'pykota'. Not dropping priviledges.")) |
|---|
| 221 | else : |
|---|
| 222 | try : |
|---|
| 223 | os.setegid(self.pykotauser[3]) |
|---|
| 224 | os.seteuid(self.pykotauser[2]) |
|---|
| 225 | except OSError, msg : |
|---|
| 226 | self.printInfo(_("Impossible to drop priviledges : %s") % msg, "warn") |
|---|
| 227 | else : |
|---|
| 228 | self.logdebug(_("Priviledges dropped. Now running as user 'pykota'.")) |
|---|
| 229 | self.privdropped = 1 |
|---|
| 230 | |
|---|
| 231 | def regainPriv(self) : |
|---|
| 232 | """Drops priviledges.""" |
|---|
| 233 | if self.privdropped : |
|---|
| 234 | try : |
|---|
| 235 | os.seteuid(0) |
|---|
| 236 | os.setegid(0) |
|---|
| 237 | except OSError, msg : |
|---|
| 238 | self.printInfo(_("Impossible to regain priviledges : %s") % msg, "warn") |
|---|
| 239 | else : |
|---|
| 240 | self.logdebug(_("Regained priviledges. Now running as root.")) |
|---|
| 241 | self.privdropped = 0 |
|---|
| 242 | |
|---|
| 243 | def UTF8ToUserCharset(self, text) : |
|---|
| 244 | """Converts from UTF-8 to user's charset.""" |
|---|
| 245 | if text is None : |
|---|
| 246 | return None |
|---|
| 247 | try : |
|---|
| 248 | return text.decode("UTF-8").encode(self.charset, "replace") |
|---|
| 249 | except (UnicodeError, AttributeError) : |
|---|
| 250 | try : |
|---|
| 251 | # Maybe already in Unicode ? |
|---|
| 252 | return text.encode(self.charset, "replace") |
|---|
| 253 | except (UnicodeError, AttributeError) : |
|---|
| 254 | # Try to autodetect the charset |
|---|
| 255 | return text.decode(detectCharset(text), "replace").encode(self.charset, "replace") |
|---|
| 256 | |
|---|
| 257 | def userCharsetToUTF8(self, text) : |
|---|
| 258 | """Converts from user's charset to UTF-8.""" |
|---|
| 259 | if text is None : |
|---|
| 260 | return None |
|---|
| 261 | try : |
|---|
| 262 | # We don't necessarily trust the default charset, because |
|---|
| 263 | # xprint sends us titles in UTF-8 but CUPS gives us an ISO-8859-1 charset ! |
|---|
| 264 | # So we first try to see if the text is already in UTF-8 or not, and |
|---|
| 265 | # if it is, we delete characters which can't be converted to the user's charset, |
|---|
| 266 | # then convert back to UTF-8. PostgreSQL 7.3.x used to reject some unicode characters, |
|---|
| 267 | # this is fixed by the ugly line below : |
|---|
| 268 | return text.decode("UTF-8").encode(self.charset, "replace").decode(self.charset).encode("UTF-8", "replace") |
|---|
| 269 | except (UnicodeError, AttributeError) : |
|---|
| 270 | try : |
|---|
| 271 | return text.decode(self.charset).encode("UTF-8", "replace") |
|---|
| 272 | except (UnicodeError, AttributeError) : |
|---|
| 273 | try : |
|---|
| 274 | # Maybe already in Unicode ? |
|---|
| 275 | return text.encode("UTF-8", "replace") |
|---|
| 276 | except (UnicodeError, AttributeError) : |
|---|
| 277 | # Try to autodetect the charset |
|---|
| 278 | return text.decode(detectCharset(text), "replace").encode("UTF-8", "replace") |
|---|
| 279 | return newtext |
|---|
| 280 | |
|---|
| 281 | def display(self, message) : |
|---|
| 282 | """Display a message but only if stdout is a tty.""" |
|---|
| 283 | if sys.stdout.isatty() : |
|---|
| 284 | sys.stdout.write(message) |
|---|
| 285 | sys.stdout.flush() |
|---|
| 286 | |
|---|
| 287 | def logdebug(self, message) : |
|---|
| 288 | """Logs something to debug output if debug is enabled.""" |
|---|
| 289 | if self.debug : |
|---|
| 290 | self.logger.log_message(message, "debug") |
|---|
| 291 | |
|---|
| 292 | def printInfo(self, message, level="info") : |
|---|
| 293 | """Sends a message to standard error.""" |
|---|
| 294 | sys.stderr.write("%s: %s\n" % (level.upper(), message)) |
|---|
| 295 | sys.stderr.flush() |
|---|
| 296 | |
|---|
| 297 | def matchString(self, s, patterns) : |
|---|
| 298 | """Returns True if the string s matches one of the patterns, else False.""" |
|---|
| 299 | if not patterns : |
|---|
| 300 | return True # No pattern, always matches. |
|---|
| 301 | else : |
|---|
| 302 | for pattern in patterns : |
|---|
| 303 | if fnmatch.fnmatchcase(s, pattern) : |
|---|
| 304 | return True |
|---|
| 305 | return False |
|---|
| 306 | |
|---|
| 307 | def sanitizeNames(self, options, names) : |
|---|
| 308 | """Ensures that an user can only see the datas he is allowed to see, by modifying the list of names.""" |
|---|
| 309 | if not self.config.isAdmin : |
|---|
| 310 | username = pwd.getpwuid(os.geteuid())[0] |
|---|
| 311 | if not options["list"] : |
|---|
| 312 | raise PyKotaCommandLineError, "%s : %s" % (username, _("You're not allowed to use this command.")) |
|---|
| 313 | else : |
|---|
| 314 | if options["groups"] : |
|---|
| 315 | user = self.storage.getUser(username) |
|---|
| 316 | if user.Exists : |
|---|
| 317 | return [ g.Name for g in self.storage.getUserGroups(user) ] |
|---|
| 318 | return [ username ] |
|---|
| 319 | elif not names : |
|---|
| 320 | return ["*"] |
|---|
| 321 | else : |
|---|
| 322 | return names |
|---|
| 323 | |
|---|
| 324 | def display_version_and_quit(self) : |
|---|
| 325 | """Displays version number, then exists successfully.""" |
|---|
| 326 | try : |
|---|
| 327 | self.clean() |
|---|
| 328 | except AttributeError : |
|---|
| 329 | pass |
|---|
| 330 | print __version__ |
|---|
| 331 | sys.exit(0) |
|---|
| 332 | |
|---|
| 333 | def display_usage_and_quit(self) : |
|---|
| 334 | """Displays command line usage, then exists successfully.""" |
|---|
| 335 | try : |
|---|
| 336 | self.clean() |
|---|
| 337 | except AttributeError : |
|---|
| 338 | pass |
|---|
| 339 | print _(self.documentation) % globals() |
|---|
| 340 | print __gplblurb__ |
|---|
| 341 | print |
|---|
| 342 | print _("Please report bugs to :"), __author__ |
|---|
| 343 | sys.exit(0) |
|---|
| 344 | |
|---|
| 345 | def crashed(self, message="Bug in PyKota") : |
|---|
| 346 | """Outputs a crash message, and optionally sends it to software author.""" |
|---|
| 347 | msg = crashed(message) |
|---|
| 348 | fullmessage = "========== Traceback :\n\n%s\n\n========== sys.argv :\n\n%s\n\n========== Environment :\n\n%s\n" % \ |
|---|
| 349 | (msg, \ |
|---|
| 350 | "\n".join([" %s" % repr(a) for a in sys.argv]), \ |
|---|
| 351 | "\n".join([" %s=%s" % (k, v) for (k, v) in os.environ.items()])) |
|---|
| 352 | try : |
|---|
| 353 | crashrecipient = self.config.getCrashRecipient() |
|---|
| 354 | if crashrecipient : |
|---|
| 355 | admin = self.config.getAdminMail("global") # Nice trick, isn't it ? |
|---|
| 356 | server = smtplib.SMTP(self.smtpserver) |
|---|
| 357 | msg = MIMEText(fullmessage, _charset=self.charset) |
|---|
| 358 | msg["Subject"] = Header("PyKota v%s crash traceback !" \ |
|---|
| 359 | % __version__, charset=self.charset) |
|---|
| 360 | msg["From"] = admin |
|---|
| 361 | msg["To"] = crashrecipient |
|---|
| 362 | msg["Cc"] = admin |
|---|
| 363 | msg["Date"] = email.Utils.formatdate(localtime=True) |
|---|
| 364 | server.sendmail(admin, [admin, crashrecipient], msg.as_string()) |
|---|
| 365 | server.quit() |
|---|
| 366 | except : |
|---|
| 367 | pass |
|---|
| 368 | return fullmessage |
|---|
| 369 | |
|---|
| 370 | def parseCommandline(self, argv, short, long, allownothing=0) : |
|---|
| 371 | """Parses the command line, controlling options.""" |
|---|
| 372 | # split options in two lists: those which need an argument, those which don't need any |
|---|
| 373 | short = "%sA:" % short |
|---|
| 374 | long.append("arguments=") |
|---|
| 375 | withoutarg = [] |
|---|
| 376 | witharg = [] |
|---|
| 377 | lgs = len(short) |
|---|
| 378 | i = 0 |
|---|
| 379 | while i < lgs : |
|---|
| 380 | ii = i + 1 |
|---|
| 381 | if (ii < lgs) and (short[ii] == ':') : |
|---|
| 382 | # needs an argument |
|---|
| 383 | witharg.append(short[i]) |
|---|
| 384 | ii = ii + 1 # skip the ':' |
|---|
| 385 | else : |
|---|
| 386 | # doesn't need an argument |
|---|
| 387 | withoutarg.append(short[i]) |
|---|
| 388 | i = ii |
|---|
| 389 | |
|---|
| 390 | for option in long : |
|---|
| 391 | if option[-1] == '=' : |
|---|
| 392 | # needs an argument |
|---|
| 393 | witharg.append(option[:-1]) |
|---|
| 394 | else : |
|---|
| 395 | # doesn't need an argument |
|---|
| 396 | withoutarg.append(option) |
|---|
| 397 | |
|---|
| 398 | # then we parse the command line |
|---|
| 399 | done = 0 |
|---|
| 400 | while not done : |
|---|
| 401 | # we begin with all possible options unset |
|---|
| 402 | parsed = {} |
|---|
| 403 | for option in withoutarg + witharg : |
|---|
| 404 | parsed[option] = None |
|---|
| 405 | args = [] # to not break if something unexpected happened |
|---|
| 406 | try : |
|---|
| 407 | options, args = getopt.getopt(argv, short, long) |
|---|
| 408 | if options : |
|---|
| 409 | for (o, v) in options : |
|---|
| 410 | # we skip the '-' chars |
|---|
| 411 | lgo = len(o) |
|---|
| 412 | i = 0 |
|---|
| 413 | while (i < lgo) and (o[i] == '-') : |
|---|
| 414 | i = i + 1 |
|---|
| 415 | o = o[i:] |
|---|
| 416 | if o in witharg : |
|---|
| 417 | # needs an argument : set it |
|---|
| 418 | parsed[o] = v |
|---|
| 419 | elif o in withoutarg : |
|---|
| 420 | # doesn't need an argument : boolean |
|---|
| 421 | parsed[o] = 1 |
|---|
| 422 | else : |
|---|
| 423 | # should never occur |
|---|
| 424 | raise PyKotaCommandLineError, "Unexpected problem when parsing command line" |
|---|
| 425 | elif (not args) and (not allownothing) and sys.stdin.isatty() : # no option and no argument, we display help if we are a tty |
|---|
| 426 | self.display_usage_and_quit() |
|---|
| 427 | except getopt.error, msg : |
|---|
| 428 | raise PyKotaCommandLineError, str(msg) |
|---|
| 429 | else : |
|---|
| 430 | if parsed["arguments"] or parsed["A"] : |
|---|
| 431 | # arguments are in a file, we ignore all other arguments |
|---|
| 432 | # and reset the list of arguments to the lines read from |
|---|
| 433 | # the file. |
|---|
| 434 | argsfile = open(parsed["arguments"] or parsed["A"], "r") |
|---|
| 435 | argv = [ l.strip() for l in argsfile.readlines() ] |
|---|
| 436 | argsfile.close() |
|---|
| 437 | for i in range(len(argv)) : |
|---|
| 438 | argi = argv[i] |
|---|
| 439 | if argi.startswith('"') and argi.endswith('"') : |
|---|
| 440 | argv[i] = argi[1:-1] |
|---|
| 441 | else : |
|---|
| 442 | done = 1 |
|---|
| 443 | return (parsed, args) |
|---|
| 444 | |
|---|
| 445 | class PyKotaTool(Tool) : |
|---|
| 446 | """Base class for all PyKota command line tools.""" |
|---|
| 447 | def __init__(self, lang="", charset=None, doc="PyKota v%(__version__)s (c) %(__years__)s %(__author__)s") : |
|---|
| 448 | """Initializes the command line tool and opens the database.""" |
|---|
| 449 | Tool.__init__(self, lang, charset, doc) |
|---|
| 450 | |
|---|
| 451 | def deferredInit(self) : |
|---|
| 452 | """Deferred initialization.""" |
|---|
| 453 | Tool.deferredInit(self) |
|---|
| 454 | self.storage = storage.openConnection(self) |
|---|
| 455 | if self.config.isAdmin : # TODO : We don't know this before, fix this ! |
|---|
| 456 | self.logdebug("Beware : running as a PyKota administrator !") |
|---|
| 457 | else : |
|---|
| 458 | self.logdebug("Don't Panic : running as a mere mortal !") |
|---|
| 459 | |
|---|
| 460 | def clean(self) : |
|---|
| 461 | """Ensures that the database is closed.""" |
|---|
| 462 | try : |
|---|
| 463 | self.storage.close() |
|---|
| 464 | except (TypeError, NameError, AttributeError) : |
|---|
| 465 | pass |
|---|
| 466 | |
|---|
| 467 | def isValidName(self, name) : |
|---|
| 468 | """Checks if a user or printer name is valid.""" |
|---|
| 469 | invalidchars = "/@?*,;&|" |
|---|
| 470 | for c in list(invalidchars) : |
|---|
| 471 | if c in name : |
|---|
| 472 | return 0 |
|---|
| 473 | return 1 |
|---|
| 474 | |
|---|
| 475 | def sendMessage(self, adminmail, touser, fullmessage) : |
|---|
| 476 | """Sends an email message containing headers to some user.""" |
|---|
| 477 | try : |
|---|
| 478 | server = smtplib.SMTP(self.smtpserver) |
|---|
| 479 | except socket.error, msg : |
|---|
| 480 | self.printInfo(_("Impossible to connect to SMTP server : %s") % msg, "error") |
|---|
| 481 | else : |
|---|
| 482 | try : |
|---|
| 483 | server.sendmail(adminmail, [touser], fullmessage) |
|---|
| 484 | except smtplib.SMTPException, answer : |
|---|
| 485 | for (k, v) in answer.recipients.items() : |
|---|
| 486 | self.printInfo(_("Impossible to send mail to %s, error %s : %s") % (k, v[0], v[1]), "error") |
|---|
| 487 | server.quit() |
|---|
| 488 | |
|---|
| 489 | def sendMessageToUser(self, admin, adminmail, user, subject, message) : |
|---|
| 490 | """Sends an email message to a user.""" |
|---|
| 491 | message += _("\n\nPlease contact your system administrator :\n\n\t%s - <%s>\n") % (admin, adminmail) |
|---|
| 492 | usermail = user.Email or user.Name |
|---|
| 493 | if "@" not in usermail : |
|---|
| 494 | usermail = "%s@%s" % (usermail, self.maildomain or self.smtpserver or "localhost") |
|---|
| 495 | msg = MIMEText(message, _charset=self.charset) |
|---|
| 496 | msg["Subject"] = Header(subject, charset=self.charset) |
|---|
| 497 | msg["From"] = adminmail |
|---|
| 498 | msg["To"] = usermail |
|---|
| 499 | msg["Date"] = email.Utils.formatdate(localtime=True) |
|---|
| 500 | self.sendMessage(adminmail, usermail, msg.as_string()) |
|---|
| 501 | |
|---|
| 502 | def sendMessageToAdmin(self, adminmail, subject, message) : |
|---|
| 503 | """Sends an email message to the Print Quota administrator.""" |
|---|
| 504 | if "@" not in adminmail : |
|---|
| 505 | adminmail = "%s@%s" % (adminmail, self.maildomain or self.smtpserver or "localhost") |
|---|
| 506 | msg = MIMEText(message, _charset=self.charset) |
|---|
| 507 | msg["Subject"] = Header(subject, charset=self.charset) |
|---|
| 508 | msg["From"] = adminmail |
|---|
| 509 | msg["To"] = adminmail |
|---|
| 510 | self.sendMessage(adminmail, adminmail, msg.as_string()) |
|---|
| 511 | |
|---|
| 512 | def _checkUserPQuota(self, userpquota) : |
|---|
| 513 | """Checks the user quota on a printer and deny or accept the job.""" |
|---|
| 514 | # then we check the user's own quota |
|---|
| 515 | # if we get there we are sure that policy is not EXTERNAL |
|---|
| 516 | user = userpquota.User |
|---|
| 517 | printer = userpquota.Printer |
|---|
| 518 | enforcement = self.config.getPrinterEnforcement(printer.Name) |
|---|
| 519 | self.logdebug("Checking user %s's quota on printer %s" % (user.Name, printer.Name)) |
|---|
| 520 | (policy, dummy) = self.config.getPrinterPolicy(userpquota.Printer.Name) |
|---|
| 521 | if not userpquota.Exists : |
|---|
| 522 | # Unknown userquota |
|---|
| 523 | if policy == "ALLOW" : |
|---|
| 524 | action = "POLICY_ALLOW" |
|---|
| 525 | else : |
|---|
| 526 | action = "POLICY_DENY" |
|---|
| 527 | self.printInfo(_("Unable to match user %s on printer %s, applying default policy (%s)") % (user.Name, printer.Name, action)) |
|---|
| 528 | else : |
|---|
| 529 | pagecounter = int(userpquota.PageCounter or 0) |
|---|
| 530 | if enforcement == "STRICT" : |
|---|
| 531 | pagecounter += self.softwareJobSize |
|---|
| 532 | if userpquota.SoftLimit is not None : |
|---|
| 533 | softlimit = int(userpquota.SoftLimit) |
|---|
| 534 | if pagecounter < softlimit : |
|---|
| 535 | action = "ALLOW" |
|---|
| 536 | else : |
|---|
| 537 | if userpquota.HardLimit is None : |
|---|
| 538 | # only a soft limit, this is equivalent to having only a hard limit |
|---|
| 539 | action = "DENY" |
|---|
| 540 | else : |
|---|
| 541 | hardlimit = int(userpquota.HardLimit) |
|---|
| 542 | if softlimit <= pagecounter < hardlimit : |
|---|
| 543 | now = DateTime.now() |
|---|
| 544 | if userpquota.DateLimit is not None : |
|---|
| 545 | datelimit = DateTime.ISO.ParseDateTime(str(userpquota.DateLimit)[:19]) |
|---|
| 546 | else : |
|---|
| 547 | datelimit = now + self.config.getGraceDelay(printer.Name) |
|---|
| 548 | userpquota.setDateLimit(datelimit) |
|---|
| 549 | if now < datelimit : |
|---|
| 550 | action = "WARN" |
|---|
| 551 | else : |
|---|
| 552 | action = "DENY" |
|---|
| 553 | else : |
|---|
| 554 | action = "DENY" |
|---|
| 555 | else : |
|---|
| 556 | if userpquota.HardLimit is not None : |
|---|
| 557 | # no soft limit, only a hard one. |
|---|
| 558 | hardlimit = int(userpquota.HardLimit) |
|---|
| 559 | if pagecounter < hardlimit : |
|---|
| 560 | action = "ALLOW" |
|---|
| 561 | else : |
|---|
| 562 | action = "DENY" |
|---|
| 563 | else : |
|---|
| 564 | # Both are unset, no quota, i.e. accounting only |
|---|
| 565 | action = "ALLOW" |
|---|
| 566 | return action |
|---|
| 567 | |
|---|
| 568 | def checkGroupPQuota(self, grouppquota) : |
|---|
| 569 | """Checks the group quota on a printer and deny or accept the job.""" |
|---|
| 570 | group = grouppquota.Group |
|---|
| 571 | printer = grouppquota.Printer |
|---|
| 572 | enforcement = self.config.getPrinterEnforcement(printer.Name) |
|---|
| 573 | self.logdebug("Checking group %s's quota on printer %s" % (group.Name, printer.Name)) |
|---|
| 574 | if group.LimitBy and (group.LimitBy.lower() == "balance") : |
|---|
| 575 | val = group.AccountBalance or 0.0 |
|---|
| 576 | if enforcement == "STRICT" : |
|---|
| 577 | val -= self.softwareJobPrice # use precomputed size. |
|---|
| 578 | balancezero = self.config.getBalanceZero() |
|---|
| 579 | if val <= balancezero : |
|---|
| 580 | action = "DENY" |
|---|
| 581 | elif val <= self.config.getPoorMan() : |
|---|
| 582 | action = "WARN" |
|---|
| 583 | else : |
|---|
| 584 | action = "ALLOW" |
|---|
| 585 | if (enforcement == "STRICT") and (val == balancezero) : |
|---|
| 586 | action = "WARN" # we can still print until account is 0 |
|---|
| 587 | else : |
|---|
| 588 | val = grouppquota.PageCounter or 0 |
|---|
| 589 | if enforcement == "STRICT" : |
|---|
| 590 | val += int(self.softwareJobSize) # TODO : this is not a fix, problem is elsewhere in grouppquota.PageCounter |
|---|
| 591 | if grouppquota.SoftLimit is not None : |
|---|
| 592 | softlimit = int(grouppquota.SoftLimit) |
|---|
| 593 | if val < softlimit : |
|---|
| 594 | action = "ALLOW" |
|---|
| 595 | else : |
|---|
| 596 | if grouppquota.HardLimit is None : |
|---|
| 597 | # only a soft limit, this is equivalent to having only a hard limit |
|---|
| 598 | action = "DENY" |
|---|
| 599 | else : |
|---|
| 600 | hardlimit = int(grouppquota.HardLimit) |
|---|
| 601 | if softlimit <= val < hardlimit : |
|---|
| 602 | now = DateTime.now() |
|---|
| 603 | if grouppquota.DateLimit is not None : |
|---|
| 604 | datelimit = DateTime.ISO.ParseDateTime(str(grouppquota.DateLimit)[:19]) |
|---|
| 605 | else : |
|---|
| 606 | datelimit = now + self.config.getGraceDelay(printer.Name) |
|---|
| 607 | grouppquota.setDateLimit(datelimit) |
|---|
| 608 | if now < datelimit : |
|---|
| 609 | action = "WARN" |
|---|
| 610 | else : |
|---|
| 611 | action = "DENY" |
|---|
| 612 | else : |
|---|
| 613 | action = "DENY" |
|---|
| 614 | else : |
|---|
| 615 | if grouppquota.HardLimit is not None : |
|---|
| 616 | # no soft limit, only a hard one. |
|---|
| 617 | hardlimit = int(grouppquota.HardLimit) |
|---|
| 618 | if val < hardlimit : |
|---|
| 619 | action = "ALLOW" |
|---|
| 620 | else : |
|---|
| 621 | action = "DENY" |
|---|
| 622 | else : |
|---|
| 623 | # Both are unset, no quota, i.e. accounting only |
|---|
| 624 | action = "ALLOW" |
|---|
| 625 | return action |
|---|
| 626 | |
|---|
| 627 | def checkUserPQuota(self, userpquota) : |
|---|
| 628 | """Checks the user quota on a printer and all its parents and deny or accept the job.""" |
|---|
| 629 | user = userpquota.User |
|---|
| 630 | printer = userpquota.Printer |
|---|
| 631 | |
|---|
| 632 | # indicates that a warning needs to be sent |
|---|
| 633 | warned = 0 |
|---|
| 634 | |
|---|
| 635 | # first we check any group the user is a member of |
|---|
| 636 | for group in self.storage.getUserGroups(user) : |
|---|
| 637 | # No need to check anything if the group is in noquota mode |
|---|
| 638 | if group.LimitBy != "noquota" : |
|---|
| 639 | grouppquota = self.storage.getGroupPQuota(group, printer) |
|---|
| 640 | # for the printer and all its parents |
|---|
| 641 | for gpquota in [ grouppquota ] + grouppquota.ParentPrintersGroupPQuota : |
|---|
| 642 | if gpquota.Exists : |
|---|
| 643 | action = self.checkGroupPQuota(gpquota) |
|---|
| 644 | if action == "DENY" : |
|---|
| 645 | return action |
|---|
| 646 | elif action == "WARN" : |
|---|
| 647 | warned = 1 |
|---|
| 648 | |
|---|
| 649 | # Then we check the user's account balance |
|---|
| 650 | # if we get there we are sure that policy is not EXTERNAL |
|---|
| 651 | (policy, dummy) = self.config.getPrinterPolicy(printer.Name) |
|---|
| 652 | if user.LimitBy and (user.LimitBy.lower() == "balance") : |
|---|
| 653 | self.logdebug("Checking account balance for user %s" % user.Name) |
|---|
| 654 | if user.AccountBalance is None : |
|---|
| 655 | if policy == "ALLOW" : |
|---|
| 656 | action = "POLICY_ALLOW" |
|---|
| 657 | else : |
|---|
| 658 | action = "POLICY_DENY" |
|---|
| 659 | self.printInfo(_("Unable to find user %s's account balance, applying default policy (%s) for printer %s") % (user.Name, action, printer.Name)) |
|---|
| 660 | return action |
|---|
| 661 | else : |
|---|
| 662 | if user.OverCharge == 0.0 : |
|---|
| 663 | self.printInfo(_("User %s will not be charged for printing.") % user.Name) |
|---|
| 664 | action = "ALLOW" |
|---|
| 665 | else : |
|---|
| 666 | val = float(user.AccountBalance or 0.0) |
|---|
| 667 | enforcement = self.config.getPrinterEnforcement(printer.Name) |
|---|
| 668 | if enforcement == "STRICT" : |
|---|
| 669 | val -= self.softwareJobPrice # use precomputed size. |
|---|
| 670 | balancezero = self.config.getBalanceZero() |
|---|
| 671 | if val <= balancezero : |
|---|
| 672 | action = "DENY" |
|---|
| 673 | elif val <= self.config.getPoorMan() : |
|---|
| 674 | action = "WARN" |
|---|
| 675 | else : |
|---|
| 676 | action = "ALLOW" |
|---|
| 677 | if (enforcement == "STRICT") and (val == balancezero) : |
|---|
| 678 | action = "WARN" # we can still print until account is 0 |
|---|
| 679 | return action |
|---|
| 680 | else : |
|---|
| 681 | # Then check the user quota on current printer and all its parents. |
|---|
| 682 | policyallowed = 0 |
|---|
| 683 | for upquota in [ userpquota ] + userpquota.ParentPrintersUserPQuota : |
|---|
| 684 | action = self._checkUserPQuota(upquota) |
|---|
| 685 | if action in ("DENY", "POLICY_DENY") : |
|---|
| 686 | return action |
|---|
| 687 | elif action == "WARN" : |
|---|
| 688 | warned = 1 |
|---|
| 689 | elif action == "POLICY_ALLOW" : |
|---|
| 690 | policyallowed = 1 |
|---|
| 691 | if warned : |
|---|
| 692 | return "WARN" |
|---|
| 693 | elif policyallowed : |
|---|
| 694 | return "POLICY_ALLOW" |
|---|
| 695 | else : |
|---|
| 696 | return "ALLOW" |
|---|
| 697 | |
|---|
| 698 | def externalMailTo(self, cmd, action, user, printer, message) : |
|---|
| 699 | """Warns the user with an external command.""" |
|---|
| 700 | username = user.Name |
|---|
| 701 | printername = printer.Name |
|---|
| 702 | email = user.Email or user.Name |
|---|
| 703 | if "@" not in email : |
|---|
| 704 | email = "%s@%s" % (email, self.maildomain or self.smtpserver) |
|---|
| 705 | os.system(cmd % locals()) |
|---|
| 706 | |
|---|
| 707 | def formatCommandLine(self, cmd, user, printer) : |
|---|
| 708 | """Executes an external command.""" |
|---|
| 709 | username = user.Name |
|---|
| 710 | printername = printer.Name |
|---|
| 711 | return cmd % locals() |
|---|
| 712 | |
|---|
| 713 | def warnGroupPQuota(self, grouppquota) : |
|---|
| 714 | """Checks a group quota and send messages if quota is exceeded on current printer.""" |
|---|
| 715 | group = grouppquota.Group |
|---|
| 716 | printer = grouppquota.Printer |
|---|
| 717 | admin = self.config.getAdmin(printer.Name) |
|---|
| 718 | adminmail = self.config.getAdminMail(printer.Name) |
|---|
| 719 | (mailto, arguments) = self.config.getMailTo(printer.Name) |
|---|
| 720 | if group.LimitBy in ("noquota", "nochange") : |
|---|
| 721 | action = "ALLOW" |
|---|
| 722 | else : |
|---|
| 723 | action = self.checkGroupPQuota(grouppquota) |
|---|
| 724 | if action.startswith("POLICY_") : |
|---|
| 725 | action = action[7:] |
|---|
| 726 | if action == "DENY" : |
|---|
| 727 | adminmessage = _("Print Quota exceeded for group %s on printer %s") % (group.Name, printer.Name) |
|---|
| 728 | self.printInfo(adminmessage) |
|---|
| 729 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 730 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
|---|
| 731 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 732 | for user in self.storage.getGroupMembers(group) : |
|---|
| 733 | if mailto != "EXTERNAL" : |
|---|
| 734 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Exceeded"), self.config.getHardWarn(printer.Name)) |
|---|
| 735 | else : |
|---|
| 736 | self.externalMailTo(arguments, action, user, printer, self.config.getHardWarn(printer.Name)) |
|---|
| 737 | elif action == "WARN" : |
|---|
| 738 | adminmessage = _("Print Quota low for group %s on printer %s") % (group.Name, printer.Name) |
|---|
| 739 | self.printInfo(adminmessage) |
|---|
| 740 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 741 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
|---|
| 742 | if group.LimitBy and (group.LimitBy.lower() == "balance") : |
|---|
| 743 | message = self.config.getPoorWarn() |
|---|
| 744 | else : |
|---|
| 745 | message = self.config.getSoftWarn(printer.Name) |
|---|
| 746 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 747 | for user in self.storage.getGroupMembers(group) : |
|---|
| 748 | if mailto != "EXTERNAL" : |
|---|
| 749 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Exceeded"), message) |
|---|
| 750 | else : |
|---|
| 751 | self.externalMailTo(arguments, action, user, printer, message) |
|---|
| 752 | return action |
|---|
| 753 | |
|---|
| 754 | def warnUserPQuota(self, userpquota) : |
|---|
| 755 | """Checks a user quota and send him a message if quota is exceeded on current printer.""" |
|---|
| 756 | user = userpquota.User |
|---|
| 757 | printer = userpquota.Printer |
|---|
| 758 | admin = self.config.getAdmin(printer.Name) |
|---|
| 759 | adminmail = self.config.getAdminMail(printer.Name) |
|---|
| 760 | (mailto, arguments) = self.config.getMailTo(printer.Name) |
|---|
| 761 | |
|---|
| 762 | if user.LimitBy in ("noquota", "nochange") : |
|---|
| 763 | action = "ALLOW" |
|---|
| 764 | elif user.LimitBy == "noprint" : |
|---|
| 765 | action = "DENY" |
|---|
| 766 | message = _("User %s is not allowed to print at this time.") % user.Name |
|---|
| 767 | self.printInfo(message) |
|---|
| 768 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 769 | if mailto != "EXTERNAL" : |
|---|
| 770 | self.sendMessageToUser(admin, adminmail, user, _("Printing denied."), message) |
|---|
| 771 | else : |
|---|
| 772 | self.externalMailTo(arguments, action, user, printer, message) |
|---|
| 773 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 774 | self.sendMessageToAdmin(adminmail, _("Print Quota"), message) |
|---|
| 775 | else : |
|---|
| 776 | action = self.checkUserPQuota(userpquota) |
|---|
| 777 | if action.startswith("POLICY_") : |
|---|
| 778 | action = action[7:] |
|---|
| 779 | |
|---|
| 780 | if action == "DENY" : |
|---|
| 781 | adminmessage = _("Print Quota exceeded for user %s on printer %s") % (user.Name, printer.Name) |
|---|
| 782 | self.printInfo(adminmessage) |
|---|
| 783 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 784 | message = self.config.getHardWarn(printer.Name) |
|---|
| 785 | if mailto != "EXTERNAL" : |
|---|
| 786 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Exceeded"), message) |
|---|
| 787 | else : |
|---|
| 788 | self.externalMailTo(arguments, action, user, printer, message) |
|---|
| 789 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 790 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
|---|
| 791 | elif action == "WARN" : |
|---|
| 792 | adminmessage = _("Print Quota low for user %s on printer %s") % (user.Name, printer.Name) |
|---|
| 793 | self.printInfo(adminmessage) |
|---|
| 794 | if mailto in [ "BOTH", "USER", "EXTERNAL" ] : |
|---|
| 795 | if user.LimitBy and (user.LimitBy.lower() == "balance") : |
|---|
| 796 | message = self.config.getPoorWarn() |
|---|
| 797 | else : |
|---|
| 798 | message = self.config.getSoftWarn(printer.Name) |
|---|
| 799 | if mailto != "EXTERNAL" : |
|---|
| 800 | self.sendMessageToUser(admin, adminmail, user, _("Print Quota Low"), message) |
|---|
| 801 | else : |
|---|
| 802 | self.externalMailTo(arguments, action, user, printer, message) |
|---|
| 803 | if mailto in [ "BOTH", "ADMIN" ] : |
|---|
| 804 | self.sendMessageToAdmin(adminmail, _("Print Quota"), adminmessage) |
|---|
| 805 | return action |
|---|
| 806 | |
|---|
