SPDX: Convert doc and docbook.

Replace the GPLv2+ blurbs in the doc and docbook directories with SPDX
headers as appropriate. This includes example code such as
packet-PROTOABBREV.c.

Remove dfilter2pod.pl and dfilter2xml.pl. We haven't used them since
2010.

Change-Id: I4adec02a9a4bc3e71e32bdf89f2754edaf696938
Reviewed-on: https://code.wireshark.org/review/24343
Reviewed-by: Gerald Combs <gerald@wireshark.org>
Petri-Dish: Gerald Combs <gerald@wireshark.org>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>

11 files changed, 10 insertions, 267 deletions

diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
index ef0e90a2e1..333e356e2a 100644
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -4,19 +4,7 @@
 # By Gerald Combs <gerald@wireshark.org>
 # Copyright 1998 Gerald Combs
 #
-# 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.
+# SPDX-License-Identifier: GPL-2.0+
 #
 
 add_custom_command(
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 2c30b11ce0..fe517fe4cf 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -5,19 +5,8 @@
 # By Gerald Combs <gerald@wireshark.org>
 # Copyright 1998 Gerald Combs
 #
-# 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.
+# SPDX-License-Identifier: GPL-2.0+
 #
-# 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.
 
 # We include dependencies on ../config.h in order to
 # capture when $(VERSION) changes.
@@ -326,7 +315,6 @@ EXTRA_DIST =				\
 	capinfos.pod			\
 	captype.pod			\
 	ciscodump.pod			\
-	dfilter2pod.pl			\
 	dftest.pod			\
 	dumpcap.pod			\
 	editcap.pod			\
diff --git a/doc/README.stats_tree b/doc/README.stats_tree
index 8f62778d93..f42f262b64 100644
--- a/doc/README.stats_tree
+++ b/doc/README.stats_tree
@@ -47,19 +47,7 @@ A small example of a very basic stats_tree plugin follows.
  * By Gerald Combs <gerald@wireshark.org>
  * Copyright 1998 Gerald Combs
  *
- * 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.
+ * SPDX-License-Identifier: GPL-2.0+
  */
 
 #include "config.h"
diff --git a/doc/dfilter2pod.pl b/doc/dfilter2pod.pl
deleted file mode 100755
index 4c08a259c9..0000000000
--- a/doc/dfilter2pod.pl
+++ /dev/null
@@ -1,140 +0,0 @@
-#!/usr/bin/perl
-#
-# Reads the display filter keyword dump produced by 'tshark -G' and
-# formats it for a pod document. The pod document is then used to
-# make a manpage
-#
-# STDIN is the wireshark glossary
-# arg1 is the pod template file. The =insert_dfilter_table token
-#      will be replaced by the pod-formatted glossary
-# STDOUT is the output
-#
-# Gilbert Ramirez <gram [AT] alumni.rice.edu>
-#
-# Wireshark - Network traffic analyzer
-# By Gerald Combs <gerald@wireshark.org>
-# Copyright 1998 Gerald Combs
-#
-# 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.
-
-use Getopt::Std;
-
-%ftenum_names = (
-	'FT_NONE',		'No value',
-	'FT_PROTOCOL',		'Protocol',
-	'FT_BOOLEAN',		'Boolean',
-	'FT_UINT8',		'Unsigned 8-bit integer',
-	'FT_UINT16',		'Unsigned 16-bit integer',
-	'FT_UINT24',		'Unsigned 24-bit integer',
-	'FT_UINT32',		'Unsigned 32-bit integer',
-	'FT_UINT64',		'Unsigned 64-bit integer',
-	'FT_INT8',		'Signed 8-bit integer',
-	'FT_INT16',		'Signed 16-bit integer',
-	'FT_INT24',		'Signed 24-bit integer',
-	'FT_INT32',		'Signed 32-bit integer',
-	'FT_INT64',		'Signed 64-bit integer',
-	'FT_FLOAT',		'Single-precision floating point',
-	'FT_DOUBLE',		'Double-precision floating point',
-	'FT_ABSOLUTE_TIME',	'Date/Time stamp',
-	'FT_RELATIVE_TIME',	'Time duration',
-	'FT_STRING',		'String',
-	'FT_STRINGZ',		'NULL terminated string',
-	'FT_EBCDIC',		'EBCDIC string',
-	'FT_UINT_STRING',	'Length string pair',
-	'FT_ETHER',		'6-byte Hardware (MAC) Address',
-	'FT_BYTES',		'Byte array',
-	'FT_UINT_BYTES',	'Length byte array pair',
-	'FT_IPv4',		'IPv4 address',
-	'FT_IPv6',		'IPv6 address',
-	'FT_IPXNET',		'IPX network or server name',
-	'FT_FRAMENUM',		'Frame number',
-	'FT_PCRE',		'Perl Compatible Regular Expression',
-	'FT_GUID',		'Globally Unique Identifier',
-	'FT_OID',		'Object Identifier',
-	'FT_REL_OID',		'Relative Object Identifier',
-);
-
-getopts('e');
-
-if ($opt_e) {
-	$proto_abbrev{'Unable to generate filter documentation'} =
-		'Please refer to https://www.wireshark.org/docs/dfref/';
-	printf STDERR "Creating empty filter list.\n";
-} else {
-	# Read all the data into memory
-	while (<STDIN>) {
-		next unless (/^([PF])/);
-	
-		$record_type = $1;
-		# Strip the line from its line-end sequence
-		# chomp($_) won't work on Win32/CygWin as it leaves the '\r' character.
-		$_ =~ s/[\r\n]//g;
-	
-		# Store protocol information
-		if ($record_type eq 'P') {
-			($junk, $name, $abbrev) = split(/\t+/, $_);
-			$proto_abbrev{$name} = $abbrev;
-		}
-		# Store header field information
-		else {
-			($junk, $name, $abbrev, $type, $parent, $blurb) =
-				split(/\t+/, $_);
-			push(@{$field_abbrev{$parent}}, $abbrev);
-			$field_info{$abbrev} = [ $name, $type, $blurb ];
-		}
-	}
-}
-
-# if there was no input on stdin, bail out
-if ($record_type ne 'P' and $record_type ne 'F' and !defined($opt_e)) {
-	exit;
-}
-
-$template = shift(@ARGV);
-
-open(TEMPLATE, $template) || die "Can't open $template for reading: $!\n";
-
-while (<TEMPLATE>) {
-	if (/=insert_dfilter_table/) {
-		&create_dfilter_table;
-	}
-	else {
-		print;
-	}
-}
-
-close(TEMPLATE) || die "Can't close $template: $!\n";
-
-sub create_dfilter_table {
-
-	# Print each protocol
-	for $proto_name (sort keys %proto_abbrev) {
-
-		print "=head2 $proto_name ($proto_abbrev{$proto_name})\n\n";
-
-		# If this proto has children fields, print those
-		if ($field_abbrev{$proto_abbrev{$proto_name}}) {
-
-			for $field_abbrev (sort @{$field_abbrev{$proto_abbrev{$proto_name}}}) {
-				print "    $field_abbrev  ", $field_info{$field_abbrev}[0],"\n",
-				      "        ", $ftenum_names{$field_info{$field_abbrev}[1]},
-				   "\n";
-				print "        ", $field_info{$field_abbrev}[2], "\n"
-					if $field_info{$field_abbrev}[2];
-				print "\n";
-			}
-		}
-	}
-}
diff --git a/doc/extcap_example.py b/doc/extcap_example.py
index 9c14ddeae7..a2ee6fb3b9 100755
--- a/doc/extcap_example.py
+++ b/doc/extcap_example.py
@@ -6,19 +6,8 @@
 # By Gerald Combs <gerald@wireshark.org>
 # Copyright 1998 Gerald Combs
 #
-# 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.
+# SPDX-License-Identifier: GPL-2.0+
 #
-# 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.
 
 """
 This is a generic example, which produces pcap packages every n seconds, and
diff --git a/doc/make-authors-format.pl b/doc/make-authors-format.pl
index 763b3e3984..2c37dca54f 100755
--- a/doc/make-authors-format.pl
+++ b/doc/make-authors-format.pl
@@ -9,19 +9,8 @@
 # By Gerald Combs <gerald@wireshark.org>
 # Copyright 1998 Gerald Combs
 #
-# 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.
+# SPDX-License-Identifier: GPL-2.0+
 #
-# 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.
 
 use strict;
 
diff --git a/doc/make-authors-short.pl b/doc/make-authors-short.pl
index df0a335ccf..00e23c3132 100755
--- a/doc/make-authors-short.pl
+++ b/doc/make-authors-short.pl
@@ -9,19 +9,8 @@
 # By Gerald Combs <gerald@wireshark.org>
 # Copyright 1998 Gerald Combs
 #
-# 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.
+# SPDX-License-Identifier: GPL-2.0+
 #
-# 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.
 
 use strict;
 
diff --git a/doc/packet-PROTOABBREV.c b/doc/packet-PROTOABBREV.c
index 52a38890cb..4d9122e19f 100644
--- a/doc/packet-PROTOABBREV.c
+++ b/doc/packet-PROTOABBREV.c
@@ -6,19 +6,7 @@
  * By Gerald Combs <gerald@wireshark.org>
  * Copyright 1998 Gerald Combs
  *
- * 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.
+ * SPDX-License-Identifier: GPL-2.0+
  */
 
 /*
diff --git a/doc/perlnoutf.pl b/doc/perlnoutf.pl
index e484a9e4af..a562f964a5 100755
--- a/doc/perlnoutf.pl
+++ b/doc/perlnoutf.pl
@@ -9,20 +9,8 @@
 # By Gerald Combs <gerald@wireshark.org>
 # Copyright 1998 Gerald Combs
 #
-# 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.
+# SPDX-License-Identifier: GPL-2.0+
 #
-# 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.
-
 
 use strict;
 
diff --git a/doc/plugins.example/Makefile.am b/doc/plugins.example/Makefile.am
index b477e13933..df90503908 100644
--- a/doc/plugins.example/Makefile.am
+++ b/doc/plugins.example/Makefile.am
@@ -4,19 +4,7 @@
 # By Gerald Combs <gerald@wireshark.org>
 # Copyright 1998 Gerald Combs
 #
-# 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.
+# SPDX-License-Identifier: GPL-2.0+
 #
 
 WARNFLAGS = -Wall -Wextra
diff --git a/doc/plugins.example/hello.c b/doc/plugins.example/hello.c
index 8493d12ad0..fce0a5372b 100644
--- a/doc/plugins.example/hello.c
+++ b/doc/plugins.example/hello.c
@@ -4,19 +4,7 @@
  * By Gerald Combs <gerald@wireshark.org>
  * Copyright 1998 Gerald Combs
  *
- * 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.
+ * SPDX-License-Identifier: GPL-2.0+
  */
 
 #ifdef HAVE_CONFIG_H