Bad Behavior - Version release-1.0

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COPYING ADDED
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+ GNU GENERAL PUBLIC LICENSE
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+ Version 2, June 1991
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+
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+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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+ 675 Mass Ave, Cambridge, MA 02139, USA
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+ Everyone is permitted to copy and distribute verbatim copies
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+ Preamble
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+ The licenses for most software are designed to take away your
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+ GNU GENERAL PUBLIC LICENSE
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+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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+ 0. This License applies to any program or other work which contains
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+ 9. The Free Software Foundation may publish revised and/or new versions
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+ Software Foundation. If the Program does not specify a version number of
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+ Foundation.
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+
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+ 10. If you wish to incorporate parts of the Program into other free
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+
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+ NO WARRANTY
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+
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+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
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+ FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
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+ OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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+ PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
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+ OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
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+ TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
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+ PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
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+ REPAIR OR CORRECTION.
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+
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+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+ WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
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+ REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
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+ INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
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+ OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
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+ TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
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+ YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
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+ PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
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+ POSSIBILITY OF SUCH DAMAGES.
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+
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+ END OF TERMS AND CONDITIONS
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+
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+ Appendix: How to Apply These Terms to Your New Programs
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+
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+ If you develop a new program, and you want it to be of the greatest
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+ possible use to the public, the best way to achieve this is to make it
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+ free software which everyone can redistribute and change under these terms.
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+ To do so, attach the following notices to the program. It is safest
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+ the "copyright" line and a pointer to where the full notice is found.
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+
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+ <one line to give the program's name and a brief idea of what it does.>
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+ Copyright (C) 19yy <name of author>
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+
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+ This program is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by
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+ the Free Software Foundation; either version 2 of the License, or
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+ (at your option) any later version.
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+
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+ This program is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ GNU General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License
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+ along with this program; if not, write to the Free Software
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+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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+
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+ Also add information on how to contact you by electronic and paper mail.
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+
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+ If the program is interactive, make it output a short notice like this
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+ when it starts in an interactive mode:
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+
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+ Gnomovision version 69, Copyright (C) 19yy name of author
316
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
317
+ This is free software, and you are welcome to redistribute it
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+ under certain conditions; type `show c' for details.
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+
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+ The hypothetical commands `show w' and `show c' should show the appropriate
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+ parts of the General Public License. Of course, the commands you use may
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+ be called something other than `show w' and `show c'; they could even be
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+ mouse-clicks or menu items--whatever suits your program.
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+
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+ You should also get your employer (if you work as a programmer) or your
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+ school, if any, to sign a "copyright disclaimer" for the program, if
327
+ necessary. Here is a sample; alter the names:
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+
329
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
330
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
331
+
332
+ <signature of Ty Coon>, 1 April 1989
333
+ Ty Coon, President of Vice
334
+
335
+ This General Public License does not permit incorporating your program into
336
+ proprietary programs. If your program is a subroutine library, you may
337
+ consider it more useful to permit linking proprietary applications with the
338
+ library. If this is what you want to do, use the GNU Library General
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+ Public License instead of this License.
README.txt ADDED
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1
+ === Bad Behavior ===
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+ Tags: comment,trackback,referrer,spam,robot,antispam
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+ Contributors: MichaelHampton,MarkJaquith,FirasDurri
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+ SeeAlso: http://www.ioerror.us/software/bad-behavior/
5
+
6
+ This README.txt file applies to WordPress installations. For other types of
7
+ installations, please see the documentation at
8
+ http://www.ioerror.us/software/bad-behavior/installing-and-using-bad-behavior/
9
+ .
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+
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+ Bad Behavior is a set of PHP scripts which prevents spambots from accessing your site by analyzing their actual HTTP requests and comparing them to profiles from known spambots. It goes far beyond User-Agent and Referer, however.
12
+
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+ The problem: Spammers run automated scripts which read everything on your web site, harvest email addresses, and if you have a blog, forum or wiki, will post spam directly to your site. They also put false referrers in your server log trying to get their links posted through your stats page.
14
+
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+ As the operator of a Web site, this can cause you several problems. First, the spammers are wasting your bandwidth, which you may well be paying for. Second, they are posting comments to any form they can find, filling your web site with unwanted (and unpaid!) ads for their products. Last but not least, they harvest any email addresses they can find and sell those to other spammers, who fill your inbox with more unwanted ads.
16
+
17
+ Bad Behavior intends to target any malicious software directed at a Web site, whether it be a spambot, ill-designed search engine bot, or system crackers. In that spirit, it is not limited to WordPress users; a generic interface has been provided whereby it can be integrated into virtually any PHP-based software.
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+
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+ == Installation ==
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+ SeeAlso: http://www.ioerror.us/software/bad-behavior/installing-and-using-bad-behavior/
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+
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+ 1. Bad Behavior installs like any other multi-file WordPress plugin. Unzip the bad-behavior.zip file, and you will have a bad-behavior folder containing all the Bad Behavior files.
23
+
24
+ 2. Before uploading, edit the bad-behavior/bad-behavior-wordpress-plugin.php file and customize the configuration variables there. When logging is on, all blocked requests will be logged. When verbose logging is on, all requests - successful or not - will be logged. And the logging duration specifies how many days worth of logs will be stored in the database. I recommend not using verbose logging without a really good reason, as your database will fill up fast.
25
+
26
+ 3. Upload the folder and its contents to your wp-content/plugins directory, taking care to use ASCII mode. Once on the server, activate the plugin from your admin page.
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+
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+ == Frequently Asked Questions ==
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+ SeeAlso: http://www.ioerror.us/software/bad-behavior/bad-behavior-faq/
30
+
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+ = I have been blocked by Bad Behavior! What do I do? =
32
+
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+ In extremely rare circumstances, Bad Behavior may block actual human visitors. Bad Behavior was designed to target robots, not people. If this happens, the profile presented by your browser matched that seen from actual malicious robots. In most cases, this is caused by over-aggressive personal firewall/browser privacy software. In some cases, this is caused by improperly configured Web proxy server software.
34
+
35
+ Try disabling the browser privacy settings in your personal firewall/browser privacy software, and/or bypassing the Web proxy and making a direct connection. Disable any download accelerators in use, especially if you are on dialup and your ISP provided you one. (These so-called accelerators rarely speed up anything; our analysis of these accelerators indicate they usually slow things down!) If all else fails, try a different Web browser with a new user profile.
36
+
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+ If you continue to have trouble, contact me and provide a copy of the logs which Bad Behavior stores in the database showing where your IP address was blocked. I will provide further assistance until the trouble is resolved.
38
+
39
+ = How can I view Bad Behavior's log files? =
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+
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+ To view the Bad Behavior log, you will need a copy of phpMyAdmin installed, or some other way to view the database. Bad Behavior stores its log in the bad_behavior_log table in your WordPress database. Browse or search through it with phpMyAdmin, the MySQL command line, or another tool. At this time Bad Behavior does not come with a built-in log viewer, though this feature is planned.
bad-behavior-accept.php ADDED
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+ <?php
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+
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+ // Check for various Accept: headers
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+
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+ function wp_bb_check_accept() {
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+ global $wp_bb_http_headers_mixed;
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+ if (!array_key_exists('Accept', $wp_bb_http_headers_mixed)) {
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+ wp_bb_spammer();
9
+ }
10
+ }
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+
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+ function wp_bb_check_accept_encoding() {
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+ global $wp_bb_http_headers, $wp_bb_http_headers_mixed;
14
+
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+ // FIXME: skip this check; too many examples of legit user agents
16
+ // are omitting Accept-Encoding; come back to it later when more
17
+ // data is available
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+ return;
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+
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+ // In some cases we can skip this check
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+ // HTTP proxies munch the Accept-Encoding header
22
+ if (array_key_exists('X-BlueCoat-Via', $wp_bb_http_headers_mixed) ||
23
+ array_key_exists('X-Forwarded-For', $wp_bb_http_headers) ||
24
+ array_key_exists('Via', $wp_bb_http_headers)) {
25
+ return;
26
+ }
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+
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+ // Check for Accept-Encoding
29
+ if (!array_key_exists('Accept-Encoding', $wp_bb_http_headers_mixed) &&
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+ !array_key_exists('~~~~~~~~~~~~~~~', $wp_bb_http_headers) &&
31
+ !array_key_exists('---------------', $wp_bb_http_headers) &&
32
+ !array_key_exists('XXXXXXXXXXXXXXX', $wp_bb_http_headers)) {
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+ wp_bb_spammer();
34
+ }
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+ }
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+
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+ ?>
bad-behavior-banned.php ADDED
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1
+ <?php
2
+ // This function is called when there is absolutely no hope for redemption for
3
+ // the offending spammer.
4
+ function wp_bb_banned() {
5
+ global $wp_bb_request_uri, $wp_bb_remote_addr, $wp_bb_server_signature;
6
+ global $wp_bb_email;
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+
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+ wp_bb_log(403);
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+ header("HTTP/1.0 412 Precondition Failed");
10
+ header("Status: 412 Precondition Failed");
11
+ ?>
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+ <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
13
+ <html xmlns="http://www.w3.org/1999/xhtml">
14
+ <head>
15
+ <title>412 Precondition Failed</title>
16
+ </head>
17
+ <body>
18
+ <h1>Precondition Failed</h1>
19
+ <p>We're sorry, but we could not fulfill your request for
20
+ <?php echo $wp_bb_request_uri ?> on this server.</p>
21
+ <p>We have established rules for access to this server, and any person or robot
22
+ that violates these rules will be unable to access this site.</p>
23
+ <p>To resolve this problem, please try the following steps:</p>
24
+ <ul>
25
+ <li>Ensure that your computer is free of viruses, Trojan horses, spyware or
26
+ any other sort of malicious software.</li>
27
+ <li>If you are using any sort of personal firewall or browser privacy
28
+ software, check to ensure that its settings do not cause your web browser to
29
+ inadvertently violate any of the rules listed below.</li>
30
+ <li>If you are behind a Web proxy or corporate firewall, the proxy must
31
+ conform to the <a href="http://www.isi.edu/in-notes/rfc2616.txt">HTTP
32
+ specification</a> with respect to proxy servers. Contact your network
33
+ administrator if the trouble persists, or bypass the proxy and connect
34
+ directly if possible.</li>
35
+ <li>Disable any download accelerators you may be using. They don't speed up
36
+ your downloads anyway; in most cases, they actually run slower!</li>
37
+ <li>If all else fails, try using a different Web browser, such as
38
+ <a href="http://www.spreadfirefox.com/?q=affiliates&amp;id=32135&amp;t=71">Firefox</a>.</li>
39
+ </ul>
40
+ <p>If you still need assistance, please contact <a href="mailto:<?php echo str_replace("@", "%40", $wp_bb_email); ?>"><?php echo str_replace("@", " at ", $wp_bb_email); ?></a>.</p>
41
+ <h2>More Information</h2>
42
+ <p>For your reference, the conditions for access to this server are:</p>
43
+ <h3>Robots:</h3>
44
+ <ul>
45
+ <li>MUST read and obey <a href="http://www.robotstxt.org/">robots.txt</a>.</li>
46
+ <li>MUST identify themselves properly; for example MUST NOT identify as Mozilla.</li>
47
+ <li>MUST NOT pretend to be a human.</li>
48
+ </ul>
49
+ <h3>Humans:</h3>
50
+ <ul>
51
+ <li>MUST NOT pretend to be a robot.</li>
52
+ <li>MUST NOT use a computer infected with viruses, Trojan horses or other
53
+ malicious software.</li>
54
+ </ul>
55
+ <h3>Both:</h3>
56
+ <ul>
57
+ <li>MUST NOT harvest email addresses.</li>
58
+ <li>MUST NOT attempt to send spam.</li>
59
+ <li>MUST NOT attempt to compromise server security.</li>
60
+ <li>MUST NOT use excessive amounts of bandwidth or other server resources.</li>
61
+ </ul>
62
+ <p>The precondition on the request for the URL
63
+ <?php echo $wp_bb_request_uri; ?> evaluated to false.</p>
64
+ <hr>
65
+ <?php echo $wp_bb_server_signature; ?>
66
+ </body>
67
+ </html>
68
+ <?php
69
+ die('');
70
+ }
71
+ ?>
bad-behavior-core.php ADDED
@@ -0,0 +1,100 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+
3
+ require_once($wp_bb_cwd . "/bad-behavior-functions.php");
4
+
5
+ // Write to the log file.
6
+ function wp_bb_log($response) {
7
+ global $wp_bb_cwd, $wp_bb_logging, $wp_bb_verbose_logging;
8
+
9
+ if (($wp_bb_verbose_logging) || ($wp_bb_logging && $response == 403)) {
10
+ require_once($wp_bb_cwd . "/bad-behavior-database.php");
11
+ wp_bb_db_log($response);
12
+ }
13
+ }
14
+
15
+ // This function is called when there is absolutely no hope for redemption for
16
+ // the offending spammer.
17
+ function wp_bb_spammer() {
18
+ global $wp_bb_cwd;
19
+ require_once($wp_bb_cwd . "/bad-behavior-banned.php");
20
+ wp_bb_banned();
21
+ }
22
+
23
+ // Load up PHP4 specific stuff if needed
24
+ if (version_compare(phpversion(), "5.0.0") < 0) {
25
+ require_once($wp_bb_cwd . "/bad-behavior-php4.php");
26
+ }
27
+
28
+ // Load up database stuff only if requested
29
+ if ($wp_bb_verbose_logging || $wp_bb_logging) {
30
+ require_once($wp_bb_cwd . "/bad-behavior-database.php");
31
+ }
32
+
33
+ // Set up some initial variables.
34
+ $wp_bb_approved = 2;
35
+ $wp_bb_db_failure = FALSE;
36
+ $wp_bb_log = 'bad_behavior_log';
37
+ $wp_bb_remote_addr = $_SERVER['REMOTE_ADDR'];
38
+ $wp_bb_request_method = $_SERVER['REQUEST_METHOD'];
39
+ $wp_bb_http_host = $_SERVER['HTTP_HOST'];
40
+ $wp_bb_request_uri = $_SERVER['REQUEST_URI'];
41
+ $wp_bb_server_protocol = $_SERVER['SERVER_PROTOCOL'];
42
+ if (array_key_exists('HTTP_REFERER', $_SERVER))
43
+ $wp_bb_http_referer = $_SERVER['HTTP_REFERER'];
44
+ else
45
+ $wp_bb_http_referer = '';
46
+ $wp_bb_http_user_agent = $_SERVER['HTTP_USER_AGENT'];
47
+ $wp_bb_server_signature = $_SERVER['SERVER_SIGNATURE'];
48
+
49
+ // Reconstruct the entire HTTP headers as received.
50
+ $wp_bb_headers = "$wp_bb_request_method $wp_bb_request_uri $wp_bb_server_protocol\n";
51
+ $wp_bb_http_headers = getheaders();
52
+ foreach ($wp_bb_http_headers as $wp_bb_header => $wp_bb_value) {
53
+ $wp_bb_headers .= "$wp_bb_header: $wp_bb_value\n";
54
+ }
55
+
56
+ // Postprocess the headers to mixed-case
57
+ // FIXME: get the world to stop using PHP as CGI
58
+ foreach ($wp_bb_http_headers as $h=>$v)
59
+ $wp_bb_http_headers_mixed[uc_all($h)]=$v;
60
+
61
+ // Easy stuff: Ban known bad user-agents
62
+ require_once($wp_bb_cwd . "/bad-behavior-user-agent.php");
63
+
64
+ // Now analyze requests coming from "MSIE"
65
+ if (stripos($wp_bb_http_user_agent, "MSIE") !== FALSE) {
66
+ if (stripos($wp_bb_http_user_agent, "Opera") === FALSE) {
67
+ require_once($wp_bb_cwd . "/bad-behavior-msie.php");
68
+ } else {
69
+ require_once($wp_bb_cwd . "/bad-behavior-opera.php");
70
+ }
71
+ }
72
+ // Now analyze requests coming from "Konqueror"
73
+ elseif (stripos($wp_bb_http_user_agent, "Konqueror") !== FALSE) {
74
+ require_once($wp_bb_cwd . "/bad-behavior-konqueror.php");
75
+ }
76
+ elseif (stripos($wp_bb_http_user_agent, "Opera") !== FALSE) {
77
+ require_once($wp_bb_cwd . "/bad-behavior-opera.php");
78
+ }
79
+ elseif (stripos($wp_bb_http_user_agent, "Safari") !== FALSE) {
80
+ require_once($wp_bb_cwd . "/bad-behavior-safari.php");
81
+ }
82
+ elseif (stripos($wp_bb_http_user_agent, "Lynx") !== FALSE) {
83
+ require_once($wp_bb_cwd . "/bad-behavior-lynx.php");
84
+ }
85
+ elseif (stripos($wp_bb_http_user_agent, "Mozilla") !== FALSE) {
86
+ require_once($wp_bb_cwd . "/bad-behavior-mozilla.php");
87
+ }
88
+
89
+ // Analyze the Referer, if present
90
+ if (array_key_exists('Referer', $wp_bb_http_headers_mixed)) {
91
+ require_once($wp_bb_cwd . "/bad-behavior-referer.php");
92
+ }
93
+
94
+ // Now analyze all other requests
95
+ require_once($wp_bb_cwd . "/bad-behavior-http-headers.php");
96
+
97
+ // If we get this far, the client is probably OK
98
+ wp_bb_log(200);
99
+
100
+ ?>
bad-behavior-database.php ADDED
@@ -0,0 +1,67 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+
3
+ // Database functions. This needs review to ensure it isn't MySQL specific;
4
+ // it certainly is right now.
5
+
6
+ $wp_bb_log = "bad_behavior_log";
7
+
8
+ function wp_bb_db_create_tables() {
9
+ global $wp_bb_log, $wp_bb_db_failure;
10
+
11
+ $query = "CREATE TABLE IF NOT EXISTS `$wp_bb_log` (
12
+ `id` int(11) NOT NULL auto_increment,
13
+ `ip` text NOT NULL,
14
+ `date` datetime NOT NULL default '0000-00-00 00:00:00',
15
+ `request_method` text NOT NULL,
16
+ `http_host` text,
17
+ `request_uri` text NOT NULL,
18
+ `server_protocol` text NOT NULL,
19
+ `http_referer` text,
20
+ `http_user_agent` text,
21
+ `http_headers` text NOT NULL,
22
+ `http_response` int(3) NOT NULL,
23
+ PRIMARY KEY (`id`) );";
24
+ if (wp_bb_db_query($query) === FALSE) {
25
+ $wp_bb_db_failure = TRUE;
26
+ }
27
+ }
28
+
29
+ function wp_bb_db_clear_old_entries() {
30
+ global $wp_bb_log, $wp_bb_logging_duration;
31
+
32
+ $query = "DELETE FROM `$wp_bb_log` WHERE
33
+ `date` < DATE_SUB('" . gmstrftime("%Y-%m-%d %H:%M:%S") .
34
+ "', INTERVAL $wp_bb_logging_duration DAY)";
35
+ if (wp_bb_db_query($query) === FALSE) {
36
+ $wp_bb_db_failure = TRUE;
37
+ }
38
+ }
39
+
40
+ // This sanitizes input for SQL! not necessarily for anything else
41
+ function wp_bb_db_sanitize($untrusted_input) {
42
+ return addslashes($untrusted_input);
43
+ }
44
+
45
+ function wp_bb_db_log($response) {
46
+ global $wp_bb_remote_addr, $wp_bb_request_method, $wp_bb_http_host;
47
+ global $wp_bb_request_uri, $wp_bb_server_protocol, $wp_bb_http_referer;
48
+ global $wp_bb_http_user_agent, $wp_bb_headers, $wp_bb_log;
49
+
50
+ // Sanitize input
51
+ $request_uri = wp_bb_db_sanitize($wp_bb_request_uri);
52
+ $referer = wp_bb_db_sanitize($wp_bb_http_referer);
53
+ $user_agent = wp_bb_db_sanitize($wp_bb_http_user_agent);
54
+ $headers = wp_bb_db_sanitize($wp_bb_headers);
55
+
56
+ $date = wp_bb_date();
57
+ $query = "INSERT INTO `$wp_bb_log`
58
+ (`ip`, `date`, `request_method`, `http_host`, `request_uri`, `server_protocol`, `http_referer`, `http_user_agent`, `http_headers`, `http_response`) VALUES
59
+ ('$wp_bb_remote_addr', '$date', '$wp_bb_request_method', '$wp_bb_http_host', '$request_uri', '$wp_bb_server_protocol', '$referer', '$user_agent', '$headers', '$response')";
60
+ if (wp_bb_db_query($query) === FALSE) {
61
+ $wp_bb_db_failure = TRUE;
62
+ }
63
+ }
64
+
65
+ wp_bb_db_create_tables();
66
+ wp_bb_db_clear_old_entries();
67
+ ?>
bad-behavior-functions.php ADDED
@@ -0,0 +1,46 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+
3
+ // Convert a string to mixed-case on word boundaries
4
+ function uc_all($string) {
5
+ $temp = preg_split('/(\W)/', str_replace("_", "-", $string), -1, PREG_SPLIT_DELIM_CAPTURE );
6
+ foreach ($temp as $key=>$word) {
7
+ $temp[$key] = ucfirst(strtolower($word));
8
+ }
9
+ return join ('', $temp);
10
+ }
11
+
12
+ // Obtain all the HTTP headers.
13
+ // NB: on PHP-CGI we hve to fake it out a bit, since we can't get the raw
14
+ // headers
15
+ function getheaders() {
16
+ if (!is_callable('getallheaders')) {
17
+ foreach($_SERVER as $h=>$v)
18
+ if(ereg('HTTP_(.+)',$h,$hp))
19
+ $headers[str_replace("_", "-", uc_all($hp[1]))]=$v;
20
+ return $headers;
21
+ } else {
22
+ return getallheaders();
23
+ }
24
+ }
25
+
26
+ // $addr should be an ip address in the format '0.0.0.0'
27
+ // $cidr should be a string in the format '100/8'
28
+ // or an array where each element is in the above format
29
+ function matchCIDR($addr, $cidr) {
30
+ $output = false;
31
+
32
+ if ( is_array($cidr) ) {
33
+ foreach ( $cidr as $cidrlet ) {
34
+ if ( matchCIDR( $addr, $cidrlet) ) {
35
+ $output = true;
36
+ }
37
+ }
38
+ } else {
39
+ list($ip, $mask) = explode('/', $cidr);
40
+ $mask = 0xffffffff << (32 - $mask);
41
+ $output = ((ip2long($addr) & $mask) == (ip2long($ip) & $mask));
42
+ }
43
+ return $output;
44
+ }
45
+
46
+ ?>
bad-behavior-generic.php ADDED
@@ -0,0 +1,76 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+ /*
3
+ http://www.ioerror.us/software/bad-behavior/
4
+
5
+ Bad Behavior - detects and blocks unwanted Web accesses
6
+ Copyright (C) 2005 Michael Hampton
7
+
8
+ This program is free software; you can redistribute it and/or modify
9
+ it under the terms of the GNU General Public License as published by
10
+ the Free Software Foundation; either version 2 of the License, or
11
+ (at your option) any later version.
12
+
13
+ This program is distributed in the hope that it will be useful,
14
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
15
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16
+ GNU General Public License for more details.
17
+
18
+ You should have received a copy of the GNU General Public License
19
+ along with this program; if not, write to the Free Software
20
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21
+ */
22
+
23
+ // This file is the entry point for Bad Behavior.
24
+ // See below to customize it for your particular CMS or PHP application.
25
+ // Preferably by the time this file is loaded, everything in your app will
26
+ // be initialized, but no output sent to the browser. If output has been
27
+ // sent, Bad Behavior will fail.
28
+
29
+ ###############################################################################
30
+ ###############################################################################
31
+
32
+ // Configuration
33
+ // Nothing will be written to a DB unless you implement DB queries below
34
+
35
+ // Log failed requests to the database.
36
+ $wp_bb_logging = TRUE;
37
+
38
+ // Log all requests to the database, not just failed requests.
39
+ $wp_bb_verbose_logging = FALSE;
40
+
41
+ // How long to keep the logs around (in days).
42
+ $wp_bb_logging_duration = 7;
43
+
44
+ // Email address to contact you in case of problems
45
+ // This will be shown to users on the error page, which means it will
46
+ // be exposed to spammers! Bad Behavior will munge it automatically; you
47
+ // should NOT munge it here!
48
+ $wp_bb_email = "badbots@ioerror.us";
49
+
50
+ ###############################################################################
51
+
52
+ # DO NOT EDIT BELOW THIS LINE
53
+
54
+ ###############################################################################
55
+
56
+ $wp_bb_cwd = dirname(__FILE__);
57
+
58
+ // Callbacks
59
+
60
+ // generic code; you should reimplement these if you want logging and
61
+ // database functions
62
+
63
+ // return a UTC date in the format preferred by your database
64
+ function wp_bb_date() {
65
+ return gmdate('Y-m-d H:i:s');
66
+ }
67
+
68
+ // run a SQL query and return # of rows affected, or FALSE if query failed
69
+ function wp_bb_db_query($query) {
70
+ return FALSE;
71
+ }
72
+
73
+ // Load core functions and do initial checks
74
+ require_once($wp_bb_cwd . "/bad-behavior-core.php");
75
+
76
+ ?>
bad-behavior-http-headers.php ADDED
@@ -0,0 +1,31 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+
3
+ // Analyze the headers of all user-agents
4
+ // These checks apply to any user-agent regardless of identification
5
+
6
+ // Range: field exists and begins with 0
7
+ // Real user-agents do not start ranges at 0
8
+ // NOTE: this blocks the whois.sc bot. No big loss.
9
+ // FIXME: whitelist whois.sc netblocks when rwhoisd.ccom.net becomes available
10
+ if (array_key_exists('Range', $wp_bb_http_headers_mixed) &&
11
+ strpos($wp_bb_http_headers_mixed['Range'], "=0-") !== FALSE) {
12
+ wp_bb_spammer();
13
+ }
14
+
15
+ // Lowercase via is used by open proxies/referrer spammers
16
+ if (array_key_exists('via', $wp_bb_http_headers)) {
17
+ wp_bb_spammer();
18
+ }
19
+ // pinappleproxy is used by referrer spammers
20
+ if (array_key_exists('Via', $wp_bb_http_headers_mixed) &&
21
+ stripos($wp_bb_http_headers['Via'], "pinappleproxy") !== FALSE) {
22
+ wp_bb_spammer();
23
+ }
24
+
25
+ // Headers which are not seen from normal user agents; only malicious bots
26
+ if (array_key_exists('X-Aaaaaaaaaaaa', $wp_bb_http_headers_mixed) ||
27
+ array_key_exists('X-Aaaaaaaaaa', $wp_bb_http_headers_mixed)) {
28
+ wp_bb_spammer();
29
+ }
30
+
31
+ ?>
bad-behavior-konqueror.php ADDED
@@ -0,0 +1,20 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+
3
+ // This file is included only when the user-agent is claiming to be Konqueror
4
+ // (or some variant thereof). We check the HTTP headers to see if it really
5
+ // is Konqueror.
6
+
7
+ require_once($wp_bb_cwd . "/bad-behavior-accept.php");
8
+
9
+ // CafeKelsa is a dev project at Yahoo which indexes job listings for
10
+ // Yahoo! HotJobs. It identifies as Konqueror so we skip these checks.
11
+ if (stripos($wp_bb_http_user_agent, "YahooSeeker/CafeKelsa") === FALSE ||
12
+ matchCIDR($wp_bb_remote_addr, "209.73.160.0/19") === FALSE) {
13
+ // Konqueror always sends the Accept: header.
14
+ wp_bb_check_accept();
15
+
16
+ // Konqueror always sends the Accept-Encoding: header.
17
+ wp_bb_check_accept_encoding();
18
+ }
19
+
20
+ ?>
bad-behavior-lynx.php ADDED
@@ -0,0 +1,10 @@
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+
3
+ // Analyze user agents claiming to be Lynx
4
+
5
+ require_once($wp_bb_cwd . "/bad-behavior-accept.php");
6
+
7
+ wp_bb_check_accept();
8
+ wp_bb_check_accept_encoding();
9
+
10
+ ?>
bad-behavior-mozilla.php ADDED
@@ -0,0 +1,20 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+
3
+ // Analyze user agents claiming to be Mozilla
4
+
5
+ // Bots:
6
+ // Yahoo! Slurp passes these checks
7
+
8
+ require_once($wp_bb_cwd . "/bad-behavior-accept.php");
9
+
10
+ wp_bb_check_accept();
11
+ // AvantGo mobile browser needs a different check
12
+ if (strpos($wp_bb_http_user_agent, "AvantGo") !== FALSE) {
13
+ if (!array_key_exists('X-Avantgo-Screensize', $wp_bb_http_headers_mixed)) {
14
+ wp_bb_spammer();
15
+ }
16
+ } else {
17
+ wp_bb_check_accept_encoding();
18
+ }
19
+
20
+ ?>
bad-behavior-msie.php ADDED
@@ -0,0 +1,28 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+
3
+ // This file is included only when the user-agent is claiming to be MSIE
4
+ // (or some variant thereof). We check the HTTP headers to see if it really
5
+ // is MSIE.
6
+
7
+ require_once($wp_bb_cwd . "/bad-behavior-accept.php");
8
+
9
+ // MSIE always sends the Accept: header.
10
+ wp_bb_check_accept();
11
+
12
+ // MSIE 6.0+ always sends the Accept-Encoding: header.
13
+ // BecomeBot does not.
14
+ if (strpos($wp_bb_http_user_agent, "MSIE 6") !== FALSE) {
15
+ if (stripos($wp_bb_http_user_agent, "BecomeBot") === FALSE ||
16
+ matchCIDR($wp_bb_remote_addr, "64.124.85.0/24") === FALSE) {
17
+ wp_bb_check_accept_encoding();
18
+ }
19
+ }
20
+
21
+ // MSIE does NOT send "Windows ME" or "Windows XP" in the user agent
22
+ if (strpos($wp_bb_http_user_agent, "Windows ME") !== FALSE ||
23
+ strpos($wp_bb_http_user_agent, "Windows XP") !== FALSE ||
24
+ strpos($wp_bb_http_user_agent, "Windows 2000") !== FALSE) {
25
+ wp_bb_spammer();
26
+ }
27
+
28
+ ?>
bad-behavior-opera.php ADDED
@@ -0,0 +1,10 @@
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+
3
+ // Analyze user agents claiming to be Opera
4
+
5
+ require_once($wp_bb_cwd . "/bad-behavior-accept.php");
6
+
7
+ wp_bb_check_accept();
8
+ wp_bb_check_accept_encoding();
9
+
10
+ ?>
bad-behavior-php4.php ADDED
@@ -0,0 +1,10 @@
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+ // Contains
3
+
4
+ // Helper functions
5
+ // stripos() needed because stripos is only present on PHP 5
6
+ function stripos($haystack,$needle,$offset = 0) {
7
+ return(strpos(strtolower($haystack),strtolower($needle),$offset));
8
+ }
9
+
10
+ ?>
bad-behavior-referer.php ADDED
@@ -0,0 +1,22 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+
3
+ // Analyze the Referer: field
4
+
5
+ function wp_bb_referer() {
6
+ global $wp_bb_http_headers_mixed;
7
+
8
+ // Referer, if it exists, must not be blank
9
+ if (empty($wp_bb_http_headers_mixed['Referer'])) {
10
+ wp_bb_spammer();
11
+ }
12
+
13
+ // Referer, if it exists, must contain a :
14
+ // While a relative URL is technically valid in Referer, all known
15
+ // legit user-agents send an absolute URL
16
+ if (strpos($wp_bb_http_headers_mixed['Referer'], ":") === FALSE) {
17
+ wp_bb_spammer();
18
+ }
19
+ return;
20
+ }
21
+
22
+ ?>
bad-behavior-safari.php ADDED
@@ -0,0 +1,9 @@
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+
3
+ // Analyze user agents claiming to be Safari
4
+
5
+ require_once($wp_bb_cwd . "/bad-behavior-accept.php");
6
+
7
+ wp_bb_check_accept();
8
+
9
+ ?>
bad-behavior-user-agent.php ADDED
@@ -0,0 +1,56 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+
3
+ // Is the user-agent a known spambot?
4
+ // Occurs at the beginning of the string
5
+ $wp_bb_spambots_str0 = array(
6
+ "8484 Boston Project", // video poker/porn spam
7
+ "autoemailspider", // spam harvester
8
+ "Digger", // spam harvester
9
+ "ecollector", // spam harvester
10
+ "EmailCollector", // spam harvester
11
+ "Email Extractor", // spam harvester
12
+ "Email Siphon", // spam harvester
13
+ "grub crawler", // misc comment/email spam
14
+ // "Java 1.", // Some doubt about this one
15
+ "libwww-perl", // exploited boxes
16
+ "LWP", // exploited boxes
17
+ "Microsoft URL", // spam harvester
18
+ "Missigua", // spam harvester
19
+ "Mozilla ", // forum exploits
20
+ "www.weblogs.com", // referrer spam (not the real www.weblogs.com)
21
+ );
22
+ // Occurs anywhere in the string
23
+ $wp_bb_spambots_str = array(
24
+ "compatible ; MSIE", // misc comment/email spam
25
+ "DTS Agent", // misc comment/email spam
26
+ "grub-client", // spam harvester
27
+ "Indy Library", // misc comment/email spam
28
+ "POE-Component-Client", // free poker, etc.
29
+ "WISEbot", // spam harvester
30
+ "WISEnutbot", // spam harvester
31
+ );
32
+ // Regex matching
33
+ $wp_bb_spambots_reg = array(
34
+ "/^[A-Z]{10}$/", // misc email spam
35
+ "/^Mozilla...0$/i", // fake user agent/email spam
36
+ // "/MSIE.*Windows XP/", // misc comment spam
37
+ );
38
+
39
+ foreach ($wp_bb_spambots_str0 as $wp_bb_spambot) {
40
+ $pos = stripos($wp_bb_http_user_agent, $wp_bb_spambot);
41
+ if ($pos !== FALSE && $pos == 0) {
42
+ wp_bb_spammer(); // does not return
43
+ }
44
+ }
45
+ foreach ($wp_bb_spambots_str as $wp_bb_spambot) {
46
+ if (stripos($wp_bb_http_user_agent, $wp_bb_spambot) !== FALSE) {
47
+ wp_bb_spammer(); // does not return
48
+ }
49
+ }
50
+ foreach ($wp_bb_spambots_reg as $wp_bb_spambot) {
51
+ if (preg_match($wp_bb_spambot, $wp_bb_http_user_agent)) {
52
+ wp_bb_spammer(); // does not return
53
+ }
54
+ }
55
+
56
+ ?>
bad-behavior-wordpress.php ADDED
@@ -0,0 +1,93 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ <?php
2
+ /*
3
+ Plugin Name: Bad Behavior
4
+ Version: 1.0.0
5
+ Plugin URI: http://www.ioerror.us/software/bad-behavior/
6
+ Description: Stop comment spam before it starts by trapping and blocking spambots before they have a chance to post comments.
7
+ Author: Michael Hampton
8
+ Author URI: http://www.ioerror.us/
9
+ License: GPL
10
+
11
+ Bad Behavior - detects and blocks unwanted Web accesses
12
+ Copyright (C) 2005 Michael Hampton
13
+
14
+ This program is free software; you can redistribute it and/or modify
15
+ it under the terms of the GNU General Public License as published by
16
+ the Free Software Foundation; either version 2 of the License, or
17
+ (at your option) any later version.
18
+
19
+ This program is distributed in the hope that it will be useful,
20
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
21
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22
+ GNU General Public License for more details.
23
+
24
+ You should have received a copy of the GNU General Public License
25
+ along with this program; if not, write to the Free Software
26
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27
+
28
+
29
+ This is beta software so please report any problems to
30
+ badbots AT ioerror DOT us
31
+ */
32
+
33
+ ###############################################################################
34
+ ###############################################################################
35
+
36
+ // Configuration
37
+
38
+ // Log failed requests to the database.
39
+ $wp_bb_logging = TRUE;
40
+
41
+ // Log all requests to the database, not just failed requests.
42
+ $wp_bb_verbose_logging = TRUE;
43
+
44
+ // How long to keep the logs around (in days).
45
+ $wp_bb_logging_duration = 7;
46
+
47
+ // Email address to contact you in case of problems
48
+ // This will be shown to users on the error page, which means it will
49
+ // be exposed to spammers! Bad Behavior will munge it automatically; you
50
+ // should NOT munge it here!
51
+ $wp_bb_email = "badbots@ioerror.us";
52
+
53
+ ###############################################################################
54
+
55
+ # DO NOT EDIT BELOW THIS LINE
56
+
57
+ ###############################################################################
58
+
59
+ $wp_bb_mtime = explode(' ', microtime());
60
+ $wp_bb_timer_start = $wp_bb_mtime[1] + $wp_bb_mtime[0];
61
+ $wp_bb_cwd = dirname(__FILE__);
62
+
63
+ // WordPress-specific code
64
+
65
+ function wp_bb_date() {
66
+ return get_gmt_from_date(current_time('mysql'));
67
+ }
68
+
69
+ function wp_bb_db_query($query) {
70
+ global $wpdb;
71
+
72
+ $result = $wpdb->query($query);
73
+ if (mysql_error()) {
74
+ return FALSE;
75
+ }
76
+ return $result;
77
+ }
78
+
79
+ // Load core functions and do initial checks
80
+ require_once($wp_bb_cwd . "/bad-behavior-core.php");
81
+
82
+ $wp_bb_mtime = explode(' ', microtime());
83
+ $wp_bb_timer_stop = $wp_bb_mtime[1] + $wp_bb_mtime[0];
84
+ $wp_bb_timer_total = $wp_bb_timer_stop - $wp_bb_timer_start;
85
+
86
+ function wp_bb_timer_display() {
87
+ global $wp_bb_timer_total;
88
+ echo "\n<!-- Bad Behavior run time: " . number_format($wp_bb_timer_total, 3) . " seconds -->\n";
89
+ }
90
+
91
+ add_action('wp_head', 'wp_bb_timer_display');
92
+
93
+ ?>