This file is indexed.

/usr/lib/lsb/lsbinstall is in lsb-compat 9.20161125.

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
#!/usr/bin/python3

import sys
import os
import shutil
import socket
import subprocess
from tempfile import NamedTemporaryFile
from initdutils import load_lsbinstall_info, save_lsbinstall_info

# These keep getting revised... *sigh*
objecttypes = (
    #'init',
    'profile',
    'service',
    'inet', # XXX - reenable when implemented
    #'crontab',
    #'man'
    )

def installed_message(objectname):
    print(objectname, 'is installed')

def handle_generic_install(options, args, location, showinstloc=False):
    filename = args[0]
    basename = os.path.basename(filename)
    instloc = os.path.join(location, basename)
    package = args.package

    filemap = load_lsbinstall_info()
    fileinfo = filemap.get((package, filename))
    
    if options.check:
        if fileinfo and os.path.exists(fileinfo):
            installed_message(fileinfo)
            return
        else:
            sys.exit(1)
    elif options.remove:
        if os.path.exists(fileinfo):
            try:
                os.unlink(fileinfo)
            except OSError as why:
                print('Removal of %s failed: %s' % (
                    instloc, str(why)), file=sys.stderr)
                sys.exit(1)

        # Remove it from the database, even if it was previously removed
        del filemap[(package, filename)]
        save_lsbinstall_info(filemap)
        return

    if os.path.exists(instloc) and options.package:
        instloc = os.path.join(location, '%s.%s' % (options.package, basename))

    if os.path.exists(instloc):
        print('Unable to install %s: %s exists' % (
            filename, instloc), file=sys.stderr)
        sys.exit(1)

    if not os.path.exists(location):
        try:
            os.makedirs(location)
        except OSError as why:
            print('Unable to create %s to install %s: %s' % (
                location, filename, str(why)), file=sys.stderr)
            sys.exit(1)
        
    try:
        shutil.copy2(filename, instloc)
    except (IOError, os.error) as why:
        print('Installation of %s as %s failed: %s' % (
            filename, instloc, str(why)), file=sys.stderr)
        sys.exit(1)
        
    if showinstloc:
        print(instloc)

    filemap[(package, filename)] = instloc
    save_lsbinstall_info(filemap)

def handle_service(options, args):
    # LSB says we don't actually have to remove these things...
    if options.remove:
        sys.exit(0)

    pkg = options.package or '<unknown package>'

    try:
        pproto = args[0]
        port, proto = pproto.split('/', 1)
        port = int(port)
    except ValueError:
        print('You must specify a port/protocol pair as the first argument.', file=sys.stderr)
        sys.exit(2)

    if options.check:
        try:
            serv = socket.getservbyport(port, proto)
        except socket.error:
            sys.exit(1)

        print('%d/%s corresponds to service %s' % (port, proto, serv))
        return

    sname = args[1]
    saliases = args[2:]

    try:
        serv = socket.getservbyport(port, proto)
    except socket.error:
        serv = None

    if serv:
        # Editing existing service
        fpin = open('/etc/services')
        fpout = NamedTemporaryFile('w', prefix='services-', dir='/etc')
        newfname = fpout.name

        for line in fpin:
            line = line.rstrip()
            if not line.startswith('#'):
                lcomment = ''
                if '#' in line:
                    line, lcomment = line.split('#', 1)
                
                bits = line.split(None, 2)
                lname, lpproto = bits[:2]
                laliases = []
                if len(bits) > 2:
                    laliases = bits[2].split()

                lport, lproto = lpproto.split('/')
                lport = int(lport)

                if lport == port and lproto == proto:
                    # We've found the right line
                    if name != lname:
                        aliases += [name]

                    for a in aliases:
                        if a != lname and a not in laliases:
                            laliases += [a]
                elif name == lname or name in laliases:
                    # name shows up, but in wrong protocol/port
                    print('Conflict between specified addition and /etc/services; aborting.', file=sys.stderr)
                    fpout.close()
                    os.unlink(newfname)
                    sys.exit(1)

                endbits = ''
                if laliases:
                    endbits = ' '.join(laliases) + ' '
                if lcomment:
                    endbits += '#'+lcomment
                    
                line = '%15s %15s %s' % lname, lpproto, endbits
                line = line.rstrip()

            print(line, file=fpout)
        
        fpin.close()
        fpout.close()
        # Make sure /etc/services is always available
        shutil.copy2('/etc/services', '/etc/services~')
        os.rename(newfname, '/etc/services')
        return

    fp = open('/etc/services', 'a')
    print('%15s %15s %s # Added by lsbinstall for %s' % (
        sname, pproto, ' '.join(saliases), pkg), file=fp)
    fp.close()

def handle_inet(options, args, parser):
    cmd = 'update-inetd --group LSB '

    alist = list(args[0].split(':'))
    if len(alist) < 2:
        parser.error("The operand must include a service and protocol.")
        return
    
    if not alist[1]:
        alist[1] = 'tcp'
    
    if options.remove:
        parts = r'%s\s+.*\s+%s\s+.*' % (re.escape(alist[0], alist[1]))
        cmd += '--remove '+subprocess.mkarg(parts)
    elif options.check:
        return
    else:
        if len(alist) != 6:
            parser.error('The operand must have six colon-separated arguments.')
            return
        newalist = [alist[0], alist[2], alist[1]] + alist[3:]
        cmd += '--add '+subprocess.mkarg('\t'.join(newalist))

    os.system(cmd)
    pass

def handle_man(options, args):
    # Try to figure out the man page section
    section = 1
    
    location = '/usr/local/share/man/man%d/' % section

    handle_generic_install(options, args, location)


def main():
    from optparse import OptionParser

    parser = OptionParser('usage: %prog [-r|-c] -t TYPE arguments...')
    parser.add_option('-c', '--check', dest="check", default=False,
                      action="store_true", help='check whether or not an '
                      'object of this type is already installed')
    parser.add_option('-r', '--remove', action="store_true",
                      dest="remove", default=False,
                      help='remove the named object')
    parser.add_option('-t', '--type', dest="type", type='choice',
                      default=None, choices=objecttypes,
                      help='type of object to be '
                      'installed: one of %s' % ', '.join(objecttypes) )
    parser.add_option('-p', '--package', dest="package", default=None,
                      help='LSB package to operate on')

    (options, args) = parser.parse_args()

    if len(args) < 1:
        parser.error('You must specify at least one argument.')
    elif (options.remove or options.check) and len(args) > 1:
        parser.error('You may only specify one argument with --check or '
                     '--remove.')

    if not options.type:
        parser.error('You must specify an object type.')

    if not options.package and options.type not in ['service']:
        parser.error('You must specify a package with %s objects.' %
                     options.type)

    if options.type == 'init':
        if len(args) > 1:
            parser.error('Only one argument supported for %s' % options.type)
        handle_generic_install(options, args, '/etc/init.d', showinstloc=True)
    elif options.type == 'profile':
        if len(args) > 1:
            parser.error('Only one argument supported for %s' % options.type)
        # profile.d does nothing on Debian... sigh
        handle_generic_install(options, args, '/etc/profile.d')
    elif options.type == 'service':
        if len(args) < 2 and not (options.remove or options.check):
            parser.error('You must specify at least two arguments when adding a service entry.')
        elif len(args) != 1 and (options.remove or options.check):
            parser.error('You must specify one argument when removing or checking a service entry.')
        handle_service(options, args)
    elif options.type == 'inet':
        handle_inet(options, args, parser)
    elif options.type == 'crontab':
        if len(args) > 1:
            parser.error('Only one argument supported for %s' % options.type)
        handle_generic_install(options, args, '/etc/cron.d')
    elif options.type == 'man':
        if len(args) > 1:
            parser.error('Only one argument supported for %s' % options.type)
        handle_man(options, args)
    else:
        print('Unsupported type %s' % options.type, file=sys.stderr)
        sys.exit(1)

if __name__ == '__main__':
    main()