This file is indexed.

/usr/share/checkbox/scripts/package_resource is in checkbox 0.13.7.

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

The actual contents of the file can be viewed below.

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#!/usr/bin/python
#
# This file is part of Checkbox.
#
# Copyright 2009 Canonical Ltd.
#
# Checkbox 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 3 of the License, or
# (at your option) any later version.
#
# Checkbox 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 Checkbox.  If not, see <http://www.gnu.org/licenses/>.
#
import os
import sys

from optparse import OptionParser
from subprocess import Popen, PIPE


# Command to retrieve packages.
COMMAND = "COLUMNS=200 dpkg -l"


def get_packages(file):
    desired_to_value = {
        "u": "Unknown",
        "i": "Install",
        "r": "Remove",
        "p": "Purge",
        "h": "Hold"}

    status_to_value = {
        "n": "Not Installed",
        "i": "Installed",
        "c": "Cfg-files",
        "u": "Unpacked",
        "u": "Failed-cfg",
        "h": "Half-inst"}

    error_to_value = {
        "":  None,
        "h": "Hold",
        "r": "Reinst-required",
        "x": "both-problems"}

    columns = ["desired", "status", "error", "name", "version", "description"]
    mandatory_columns = columns[:]
    mandatory_columns.remove("error") #this is optional
    aliases = {
        "linux-image-" + os.uname()[2]: "linux"}

    # Skip header lines
    while True:
        line = file.readline()
        if line.startswith("+++"):
            break

    # Get length from separator
    lengths = [0, 1, 2]
    lengths.extend([len(i) + 1 for i in line.split("-")])
    for i in range(4, len(lengths)):
        lengths[i] += lengths[i - 1]

    # Get remaining lines
    for line in file.readlines():
        package = {}
        for i, column in enumerate(columns):
            value = line[lengths[i]:lengths[i+1]].strip()

            # Convert value
            if column == "desired":
                value = desired_to_value.get(value)
            elif column == "status":
                value = status_to_value.get(value)
            elif column == "error":
                value = error_to_value.get(value)

            # Set value
            if value:
                package[column] = value

        #Skip records not containing all mandatory columns
        if not set(mandatory_columns).issubset(package.keys()):
            continue

        name = package["name"]
        if name in aliases:
            yield dict(package)
            package["name"] = aliases[name]

        yield package

def main(args):
    usage = "Usage: %prog [FILE...]"
    parser = OptionParser(usage=usage)
    parser.add_option("-i", "--input",
        action="store_true",
        help="Read packages from stdin")
    (options, args) = parser.parse_args(args)

    if options.input:
        file = sys.stdin
    else:
        file = Popen(COMMAND, stdout=PIPE, shell=True).stdout

    packages = get_packages(file)
    for package in packages:
        for key, value in package.iteritems():
            print "%s: %s" % (key, value)

        # Empty line
        print

    return 0


if __name__ == "__main__":
    sys.exit(main(sys.argv[1:]))