This file is indexed.

/usr/share/piuparts/piuparts-master-backend is in piuparts-master 0.64ubuntu1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
#! /usr/bin/python
# -*- coding: utf-8 -*-
#
# Copyright 2005 Lars Wirzenius (liw@iki.fi)
# Copyright © 2011-2013 Andreas Beckmann (anbe@debian.org)
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA


"""Distributed piuparts processing, master program

Lars Wirzenius <liw@iki.fi>
"""


import sys
import logging
import ConfigParser
import os
import fcntl
import time
import random

import piupartslib
from piupartslib.packagesdb import LogfileExists
from piupartslib.conf import MissingSection


CONFIG_FILE = "/etc/piuparts/piuparts.conf"
DISTRO_CONFIG_FILE = "/etc/piuparts/distros.conf"


log_handler = None


def setup_logging(log_level, log_file_name):
    logger = logging.getLogger()

    global log_handler
    logger.removeHandler(log_handler)

    if log_file_name:
        log_handler = logging.FileHandler(log_file_name)
    else:
        log_handler = logging.StreamHandler(sys.stderr)

    logger.addHandler(log_handler)
    logger.setLevel(log_level)


def timestamp():
    return time.strftime("[%Y-%m-%d %H:%M:%S]")


class Config(piupartslib.conf.Config):

    def __init__(self, section="master", defaults_section=None):
        piupartslib.conf.Config.__init__(self, section,
                                         {
                                         "log-file": None,
                                         "master-directory": ".",
                                         "proxy": None,
                                         "mirror": None,
                                         "distro": None,
                                         "area": None,
                                         "arch": None,
                                         "upgrade-test-distros": None,
                                         "depends-sections": None,
                                         },
                                         defaults_section=defaults_section)


class CommandSyntaxError(Exception):

    def __init__(self, msg):
        self.args = msg,


class ProtocolError(Exception):

    def __init__(self):
        self.args = "EOF, missing space in long part, or other protocol error",


class Protocol:

    def __init__(self, input, output):
        self._input = input
        self._output = output

    def _readline(self):
        line = self._input.readline()
        logging.debug(">> " + line.rstrip())
        return line

    def _writeline(self, line):
        logging.debug("<< " + line)
        self._output.write(line + "\n")
        self._output.flush()

    def _short_response(self, *words):
        self._writeline(" ".join(words))

    def _read_long_part(self):
        lines = []
        while True:
            line = self._input.readline()
            if not line:
                raise ProtocolError()
            if line == ".\n":
                break
            if line[0] != " ":
                raise ProtocolError()
            lines.append(line[1:])
        return "".join(lines)


class Master(Protocol):

    def __init__(self, input, output):
        Protocol.__init__(self, input, output)
        self._commands = {
            "section": self._switch_section,
            "recycle": self._recycle,
            "idle": self._idle,
            "status": self._status,
            "reserve": self._reserve,
            "unreserve": self._unreserve,
            "pass": self._pass,
            "fail": self._fail,
            "untestable": self._untestable,

            # debug commands, unstable and undocumented interface
            "_state": self._state,
            "_depends": self._depends,
            "_recursive-depends": self._recursive_depends,
            "_depcycle": self._depcycle,
            "_list": self._list,
        }
        self._section = None
        self._lock = None
        self._writeline("hello")

    def _init_section(self, section):
        if self._lock:
            self._lock.close()

        # clear all settings from a previous section and set defaults
        self._section = None
        self._lock = None
        self._recycle_mode = False
        self._idle_mode = None
        self._idle_stamp = os.path.join(section, "idle.stamp")
        self._package_databases = None
        self._binary_db = None

        config = Config(section=section, defaults_section="global")
        try:
            config.read(CONFIG_FILE)
        except MissingSection:
            return False

        if not os.path.exists(section):
            os.makedirs(section)

        self._lock = open(os.path.join(section, "master.lock"), "we")
        try:
            fcntl.flock(self._lock, fcntl.LOCK_EX | fcntl.LOCK_NB)
        except IOError:
            return False

        self._section = section

        logging.debug(timestamp() + " switching logfile")
        logfile = config["log-file"] or os.path.join(section, "master.log")
        setup_logging(logging.DEBUG, logfile)
        logging.debug(timestamp() + " connected")

        # start with a dummy _binary_db (without Packages file), sufficient
        # for submitting finished logs
        self._binary_db = piupartslib.packagesdb.PackagesDB(prefix=section)

        return True

    def _init_db(self):
        if self._package_databases is not None:
            return

        self._package_databases = {}
        self._load_package_database(self._section)
        self._binary_db = self._package_databases[self._section]

    def _load_package_database(self, section):
        if section in self._package_databases:
            return

        config = Config(section=section, defaults_section="global")
        config.read(CONFIG_FILE)
        distro_config = piupartslib.conf.DistroConfig(DISTRO_CONFIG_FILE, config["mirror"])
        db = piupartslib.packagesdb.PackagesDB(prefix=section)
        if self._recycle_mode and self._section == section:
            db.enable_recycling()
        self._package_databases[section] = db
        if config["depends-sections"]:
            deps = config["depends-sections"].split()
            for dep in deps:
                self._load_package_database(dep)
            db.set_dependency_databases([self._package_databases[dep] for dep in deps])
        db.load_packages_urls(
            distro_config.get_packages_urls(
                config.get_distro(),
                    config.get_area(),
                    config.get_arch()))
        if config.get_distro() != config.get_final_distro():
            # take version numbers (or None) from final distro
            db.load_alternate_versions_from_packages_urls(
                distro_config.get_packages_urls(
                    config.get_final_distro(),
                    config.get_area(),
                    config.get_arch()))

    def _clear_idle(self):
        if not self._idle_mode is False:
            self._idle_mode = False
            if os.path.exists(self._idle_stamp):
                os.unlink(self._idle_stamp)

    def _set_idle(self):
        if not self._idle_mode is True:
            self._idle_mode = True
            open(self._idle_stamp, "w").close()
            os.utime(self._idle_stamp, (-1, self._binary_db._stamp))

    def _get_idle_status(self):
        """ Returns number of seconds a cached idle status is still valid, or 0 if not known to be idle. """
        if not os.path.exists(self._idle_stamp):
            return 0
        stamp_mtime = os.path.getmtime(self._idle_stamp)
        ttl = stamp_mtime + 3600 - time.time()
        if ttl <= 0:
            return 0  # stamp expired
        if stamp_mtime < self._binary_db.get_mtime():
            return 0  # stamp outdated
        return ttl + random.randrange(120)

    def do_transaction(self):
        line = self._readline()
        if line:
            parts = line.split()
            if len(parts) > 0:
                command = parts[0]
                args = parts[1:]
                if self._section is None and command != "section":
                    raise CommandSyntaxError("Expected 'section' command, got %s" % command)
                if command in self._commands:
                    self._commands[command](command, args)
                    return True
                else:
                    raise CommandSyntaxError("Unknown command %s" % command)
        return False

    def _check_args(self, count, command, args):
        if len(args) != count:
            raise CommandSyntaxError("Need exactly %d args: %s %s" %
                                     (count, command, " ".join(args)))

    def dump_pkgs(self):
        for st in self._binary_db.get_states():
            for name in self._binary_db.get_pkg_names_in_state(st):
                logging.debug("%s : %s\n" % (st, name))

    def _switch_section(self, command, args):
        self._check_args(1, command, args)
        if self._init_section(args[0]):
            self._short_response("ok")
        elif self._lock is None:
            # unknown section
            self._short_response("error")
        else:
            self._short_response("busy")

    def _recycle(self, command, args):
        self._check_args(0, command, args)
        if self._binary_db.enable_recycling():
            self._idle_stamp = os.path.join(self._section, "recycle.stamp")
            self._recycle_mode = True
            self._short_response("ok")
        else:
            self._short_response("error")

    def _idle(self, command, args):
        self._check_args(0, command, args)
        self._short_response("ok", "%d" % self._get_idle_status())

    def _status(self, command, args):
        self._check_args(0, command, args)
        self._init_db()
        stats = ""
        if self._binary_db._recycle_mode:
            stats += "(recycle) "
        total = 0
        for state in self._binary_db.get_states():
            count = len(self._binary_db.get_pkg_names_in_state(state))
            total += count
            stats += "%s=%d " % (state, count)
        stats += "total=%d" % total
        self._short_response("ok", stats)

    def _reserve(self, command, args):
        self._check_args(0, command, args)
        self._init_db()
        package = self._binary_db.reserve_package()
        if package is None:
            self._set_idle()
            self._short_response("error")
        else:
            self._clear_idle()
            self._short_response("ok",
                                 package["Package"],
                                 package["Version"])

    def _unreserve(self, command, args):
        self._check_args(2, command, args)
        self._binary_db.unreserve_package(args[0], args[1])
        self._short_response("ok")

    def _pass(self, command, args):
        self._check_args(2, command, args)
        log = self._read_long_part()
        try:
            self._binary_db.pass_package(args[0], args[1], log)
        except LogfileExists:
            logging.info("Ignoring duplicate submission: %s %s %s"
                         % ("pass", args[0], args[1]))
        self._short_response("ok")

    def _fail(self, command, args):
        self._check_args(2, command, args)
        log = self._read_long_part()
        try:
            self._binary_db.fail_package(args[0], args[1], log)
        except LogfileExists:
            logging.info("Ignoring duplicate submission: %s %s %s"
                         % ("fail", args[0], args[1]))
        self._short_response("ok")

    def _untestable(self, command, args):
        self._check_args(2, command, args)
        log = self._read_long_part()
        try:
            self._binary_db.make_package_untestable(args[0], args[1], log)
        except LogfileExists:
            logging.info("Ignoring duplicate submission: %s %s %s"
                         % ("untestable", args[0], args[1]))
        self._short_response("ok")

    # debug command
    def _state(self, command, args):
        self._check_args(1, command, args)
        self._short_response("ok", self._binary_db.get_package_state(args[0]),
                             self._binary_db.get_package(args[0])["Version"])

    # debug command
    def _depends(self, command, args):
        self._check_args(1, command, args)
        if self._binary_db.has_package(args[0]):
            package = self._binary_db.get_package(args[0])
            self._short_response("ok", *package.dependencies())
        else:
            self._short_response("error")

    # debug command
    def _recursive_depends(self, command, args):
        self._check_args(1, command, args)
        if self._binary_db.has_package(args[0]):
            package = self._binary_db.get_package(args[0])
            self._short_response("ok", *self._binary_db._get_recursive_dependencies(package))
        else:
            self._short_response("error")

    # debug command
    def _depcycle(self, command, args):
        self._check_args(1, command, args)
        if self._binary_db.has_package(args[0]):
            self._short_response("ok", *self._binary_db._get_dependency_cycle(args[0]))
        else:
            self._short_response("error")

    # debug command
    def _list(self, command, args):
        self._check_args(1, command, args)
        if args[0] in self._binary_db.get_states():
            self._short_response("ok", *self._binary_db.get_pkg_names_in_state(args[0]))
        else:
            self._short_response("error")


def main():
    setup_logging(logging.INFO, None)
    global_config = Config(section="global")
    global_config.read(CONFIG_FILE)
    if global_config["proxy"]:
        os.environ["http_proxy"] = global_config["proxy"]
    master_directory = global_config["master-directory"]

    if not os.path.exists(master_directory):
        os.makedirs(master_directory)

    os.chdir(master_directory)

    m = Master(sys.stdin, sys.stdout)
    while m.do_transaction():
        pass

    logging.debug(timestamp() + " disconnected")

if __name__ == "__main__":
    main()

# vi:set et ts=4 sw=4 :