This file is indexed.

/usr/sbin/update-mime is in mime-support 3.59ubuntu1.

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
#! /usr/bin/perl
###############################################################################
#
#  Update-MIME:  Install programs into "/etc/mailcap", resolve conflicts,
#                auto-uninstall, make dinner, and wash dishes.
#
#  Written by Brian White <bcwhite@pobox.com>.
#
#  This program has been placed in the public domain (the only true "free").
#  Do whatever you wish with it, though I'd appreciate it if my name stayed
#  on it as the original author.
#
###############################################################################

umask(022);



#
# Program Constants
#
$debug		= 0;
$conffile	= "/etc/update-mime.conf";
$mailcap	= "/etc/mailcap";
$mailcapdef	= "/usr/lib/mime/mailcap";
$mimedir	= "/usr/lib/mime/packages";
$appsdir	= "/usr/share/applications";
$orderfile	= "/etc/mailcap.order";
$defpriority    = 5;
$localgen	= 0;


# If the call comes from dpkg, only accept it if --triggered is passed
# This is so that we don't get useless calls from packages' postinsts
# that call update-mime due to dh_installmime adding that call for
# when there was no triggers support.
#
# When this 'hack' is removed, mime-support's postinst should be updated
# to not pass --triggered anymore in 'triggered'.
if ($ENV{"DPKG_RUNNING_VERSION"} ne "" && $ARGV[0] ne "--triggered") {
    exit (0);
}


# Allow local run
if ($ARGV[0] eq "--local") {
    $conffile	= "$ENV{HOME}/.update-mime.conf";
    $mailcap	= "$ENV{HOME}/.mailcap";
    $orderfile	= "$ENV{HOME}/.mailcap.order";
    $localgen	= 1;
}


#
# Allow local customizations
#
do $conffile if -f $conffile;


#
# Global Variables
#
%entries;
%packages;
%priorities;
@order;
$counter=1;


sub ReadEntries
{
	my($pkg,$priority);

#	foreach $file (glob "$mimedir/*") {
	foreach $file (map { glob $_.'/*' } split ':',$mimedir) {
		next if ($file =~ m!(^|/)(\.|\#)|(\~)$!);
		($pkg) = ($file =~ m|/([^/]*)$|);
		print STDERR "$pkg:\n" if $debug;

		if (!defined $packages{$pkg}) {
			$packages{$pkg} = [];
		}

		if (open(FILE,"<$file")) {
			while (<FILE>) {
				chomp;
				next if m/^\s*$|^\s*\#/;
				if (! m(^[a-zA-Z0-9*][a-zA-Z0-9!#\$&^_.+-]*/[a-zA-Z0-9*][a-zA-Z0-9!#\$&^_.+-]*;) ) {
					print STDERR "Warning: mailcap line not starting with a media type in $pkg\n";
					print STDERR "Problematic line: $_\n";
				}
				if (m/priority\s*=\s*(\d+)\s*($|;)/i) {
					$priority=$1;
				} else {
					$priority=$defpriority;
				}
				if ($priority < 0 || $priority > 9) {
					print STDERR "Error: priority of $priority is out of range (0 <= pri <= 9)\n";
					print STDERR "       $_\n";
					$priority=$defpriority;
				}
				$entries{$counter} = $_;
				push @{$packages{$pkg}},$counter;
				push @{$priorities{$priority}},$counter;
				print STDERR "$counter: $_\n" if $debug;
				$counter++;
			}
			close(FILE);
		} else {
			print STDERR "Warning: could not open file '$file' -- $!\n";
		}
	}
}

sub RecurseIntoDirectories
{
	my @files;
	foreach my $dir (@_) {
		next if ($dir =~ m!(^|/)(\.|\#)|(\~)$!);
		my @entries = glob "$dir/*";
		push @files, RecurseIntoDirectories(grep { -d $_ } @entries);
		push @files, grep { -f $_ } @entries;
	}
	return @files;
}

sub ReadDesktopEntries
{
	my($pkg,$priority);

	foreach $file (RecurseIntoDirectories(split ':',$appsdir)) {
		next if ($file =~ m!(^|/)(\.|\#)|(\~)$!);
		next unless ($file =~ m/\.desktop$/);
		($pkg) = ($file =~ m|/([^/]*)\.desktop$|);
		print STDERR "$pkg:\n" if $debug;

		next if (defined $packages{$pkg});
		$packages{$pkg} = [];

		if (open(FILE,"<$file")) {
			my($terminal, $name, $icon, $exec, @types) = ("test=test -n \"\$DISPLAY\"", $pkg);
			while (<FILE>) {
				chomp;
				next if (m/^\s*$|^\s*\#/);
				if (m/^Terminal=(\w+)/i) {
					$terminal = "needsterminal" if ($1 eq "true");
				}
				elsif (m/^Name=(.+)/i) {
					$name = $1;
				}
				elsif (m/^Icon=(.+)/i) {
					$icon = $1;
				}
				elsif (m/Exec=(.*)$/i) {
					$exec = $1;
					$exec =~ s/%[fFuU]/%s/g;
					$exec .= " %s" if ($exec !~ m/%s/);
				}
				elsif (m/MimeType=(.*)/i) {
					push @types, split(/;/, $1);
				}
			}
			if (!defined($exec) || !scalar(@types)) {
				close(FILE);
				next;
			}
			$exec =~ s/%c/$name/g;
			$exec =~ s/%i/--icon $icon/g;
			foreach $type (@types) {
				my $entry = "$type; $exec; $terminal";
				$priority=$defpriority;
				$entries{$counter} = $entry;
				push @{$packages{$pkg}},$counter;
				push @{$priorities{$priority}},$counter;
				print STDERR "$counter: $entry\n" if $debug;
				$counter++;
			}
			close(FILE);
		} else {
			print STDERR "Warning: could not open file '$file' -- $!\n";
		}
	}
}


sub ReadOrder
{
	if (-e $orderfile) {
		if (open(FILE,"<$orderfile")) {
			while (<FILE>) {
				chomp;
				s/\s*\#.*$//;
				next if m/^\s*$/;
				push @order,$_;
				/(.*):/;
				my $pkg = $1;
				unless( grep {/^$pkg$/} keys(%packages)) {
					print STDERR "Warning: package $pkg listed in /etc/mailcap.order does not have mailcap entries.\n";
				}
			}
			close(FILE);
		} else {
			print STDERR "Warning: could not open file '$orderfile' -- $!\n";
		}
	}
}



sub OrderEntries
{
	my(@entrylist,@orderlist,@templist,$priority,$entrycode,$ordercode);

	foreach $priority (sort {$b <=> $a} keys %priorities) {
		print STDERR " - Priority $priority:" if $debug;
		@templist = @{$priorities{$priority}};
		@templist = sort {
			$ae  = $entries{$a};
			$ac  = 0;
			$ac += 1 if $ae =~ m!^\S+/\*!;
			$ac += 2 if $ae =~ m!^\*/!;
			$be  = $entries{$b};
			$bc  = 0;
			$bc += 1 if $be =~ m!^\S+/\*!;
			$bc += 2 if $be =~ m!^\*/!;
			$ac <=> $bc;
		} @templist;
		foreach $entry (@templist) {
			print STDERR " $entry" if $debug;
			push @entrylist,$entry;
		}
		print STDERR "\n" if $debug;
	}

	print STDERR "entrylist: @entrylist\n" if $debug;
	foreach $ordercode (@order) {
		my($pkg,$typ);
		if ($ordercode =~ m/:/) {
			($pkg,$typ) = ($ordercode =~ m/^(.*):(\S*)/);
		} else {
			$pkg = $ordercode;
			$typ = "*/*";
		}
		$typ = "*/*" unless $typ;
		print STDERR " - Ordering '$ordercode'...  (package=$pkg, type=$typ, orderlist=@orderlist)\n" if $debug;
		$typ =~ s/\*/\.\*/g;
		foreach $entrycode (@entrylist) {
			next if grep(/^\Q$entrycode\E$/,@orderlist);
			print STDERR "    - Checking entrycode '$entrycode' against (@{$packages{$pkg}})...\n" if $debug;
			if (grep(/^\Q$entrycode\E$/,@{$packages{$pkg}})) {
				$entry = $entries{$entrycode};
				my($etype) = ($entry =~ m/^(.*?)(;|\s)/);
				print STDERR "       - entry found, type=$etype, checking against '$typ'\n" if $debug;
				if ($etype =~ m!^$typ$!) {
#					print STDERR "       - matched!\n" if $debug;
#					my($oaction) = ($ordercode =~ m/action=([^\s;]*)/i);
#					my($eaction) = ($entry     =~ m/action=([^\s;]*)/i);
#					$eaction="view" unless $eaction;
#					print STDERR "       - checking entry action '$eaction' against '$oaction'\n" if $debug;
#					if (!$oaction || $eaction =~ m/^($oaction)$/) {
						push @orderlist,$entrycode;
						print STDERR "       - matched!  (orderlist=@orderlist)\n" if $debug;
#					}
				}
			}
		}
	}

	foreach $entrycode (@entrylist) {
		next if grep(/^\Q$entrycode\E$/,@orderlist);
		push @orderlist,$entrycode;
	}

	print STDERR "orderlist: @orderlist\n" if $debug;
	return @orderlist;
}



#
# Generate new mailcap file
#
sub UpdateMailcap
{
	my(@entrylist) = @_;
	my(@above,@user,@below,$state,$entrycode);
	$state = 0;
	if (!open(PATH,"<$mailcap")) {
		if (!open(PATH,"<$mailcapdef")) {
#			print STDERR "Warning: could not read '$mailcap' (update stopped) -- $!\n";
#			print STDERR "         restore from backup or delete and re-install mime-support package";
			return;
		}
	}

	while (<PATH>) {
		s/install-mime/update-mime/g;
		if ($state == 0) {
			push @above,$_;
		}
		$state=2 if ($state == 1 && /^\# ----- .* Ends /);
		if ($state == 1) {
			push @user,$_;
		}
		$state=1 if ($state == 0 && /^\# ----- .* Begins /);
		if ($state == 2) {
			push @below,$_;
		}
		$state=3 if ($state == 2);
	}

	close PATH;

	if ($state == 3) {
		my $newfile = join('',@above,@user,@below);
		$newfile .= "\n###############################################################################\n\n";
		foreach $entrycode (@entrylist) {
			my $entry = $entries{$entrycode};
			$entry =~ s/\s*priority\s*=\s*\d+\s*($|;)//;
			$entry =~ s/\s*;\s*$//;
			$newfile .= $entry."\n";
		}

		if (!open(PATH,">$mailcap.new")) {
			print STDERR "Error: could not write '$mailcap.new' -- $!\n";
			exit(1) unless ($debug);
			open(PATH,">-");
		}
		print PATH $newfile;
		close PATH;
		if (!open(PATH,"<$mailcap.new")) {
			die "Error: could not read generated '$mailcap.new' -- $!\n";
		}
		my $savfile = "";
		$savfile .= $_ while (<PATH>);
		if ($savfile ne $newfile) {
			die "Error: contents of '$mailcap.new' do not match what was written -- abort\n";
		}
		rename "$mailcap.new","$mailcap";
	} else {
		print STDERR "Error: '$mailcap' is not in required format -- not updated\n";
		print STDERR "       Restore from backup or delete and re-install mime-support package";
	}
}



ReadEntries();
ReadDesktopEntries();
ReadOrder();
@list = OrderEntries();
UpdateMailcap(@list);