mguestbook/0040755000175000017500000000000007447212517011746 5ustar mattmattmguestbook/thanks.html0100644000175000017500000000003707320312406014105 0ustar mattmattThanks for your post blah blah mguestbook/badcontent.html0100644000175000017500000000006407320312377014745 0ustar mattmattSorry but the entry contained bad content blah blah mguestbook/routines.cgi0100755000175000017500000000161707447212517014307 0ustar mattmatt#!/usr/bin/perl use DBI; local $debug; local $db_password; local $db_username; require 'config.cgi'; # only prints if debug is set! sub print_debug { if($debug) { print "\n"; } } # connects to the database and returns a database handler sub db_connect { print_debug "connecting to database ".$db_name; $db = DBI->connect('DBI:mysql:database='.$db_name, $db_username, $db_password) or return -1; print_debug "connection successful, returning valid database handler"; return $db; } # lists the fields of the table/database - must provide a valid database handler! sub list_fields { $db = $_[0]; print_debug "retrieving list of fields for table `".$db_table."'"; $q = $db->prepare('DESC '.$db_table); $q->execute; local @fields; while(@r = $q->fetchrow_array) { print_debug "adding `".$r[0]."' to list of fields"; push @fields, $r[0]; } return @fields; } mguestbook/README0100644000175000017500000003230107320336256012617 0ustar mattmattMatt's Guestbook script Readme ============================== 1. Introduction --------------- This script can be used to put a guestbook on a website (hence the name) using a template system for easy integration with the original site. To do this, the script uses perl and a MySQL database. 2. Setup & Configuration ------------------------ The script is easy to configure and doesn't take much in terms of brain power or logical reasoning. Let's begin with the admin stuff, open the "config.cgi" file, this contains some variables that can be set to configure certain aspects of the script. The first thing to change is the "$admin_username" and "$admin_password" variables, these are _not_ the MySQL details, nor are they any other usernames or passwords that you have, these are a specific username and password for administrating _this_ guestbook - nothing else - so set them to anything you want (hint: don't leave "$admin_password" as "password"!). The next thing to change is the "$admin_authorisation", if this is set to "1" then anybody who tries to post an entry to your guestbook will have their entry placed in a "pending" queue, the administrator must then login to the administration page and authorise the entry (add it to the main list), if on the other hand, this is set to "0" then anybody who posts an entry to your guestbook will have their entry go automatically into the main list and will show on the list instantly (this isn't a particularly good idea!). Next comes the MySQL configuration stuff, firstly we have "$db_name", this should be set to the name of the MySQL database you have setup to hold the guestbook details. Next is the MySQL hostname, "$db_host", most people will leave this set to "localhost", although I am sure some people will want to change this. Then we have the MySQL authorisation details, the username and password ("$db_username" and "$db_password"), these are of course used to connect to the MySQL database server to query/update/add to the main list and pending list and hence should be set to your specific MySQL username and password. Then we have "$db_table", this is the name of the table that will hold all your guestbook entries, this will have to be constructed and configured (see 3. Making the necessary tables) as well as a "pending" table with the same name, but with "_pending" appended to the name. OK, that's all the MySQL configuration stuff done. Next we have "$okpost_redirect", this is a URL to redirect the client's browser to when he/she posts an entry to the list, can either be local form ("thanks.html") or full URL form ("https://domain.name/thanks.html"), either will do fine. Content control can be used to block certain words from entries that people post, while all entries can be administered and hence alterations can be made, some entries can be blocked by checking for certain words The template stuff comes next and for help on this see "4. Constructing usable templates". "$results_page_template" is the template that is going to hold the results, the design of the whole page, in other words. "$results_template" is a template for how each individual entry will be shown in the guestbook list. Next up is "$date_format", which is used to display the date and time at which the entries were posted to the list, there are a couple of examples shown in the config.cgi file, but for more detailed help on exactly how to configure this value see https://www.mysql.com/doc/D/a/Date_and_time_functions.html under the header "DATE_FORMAT". To accompany the date formatting routines is the "$time_diff" variable, this allows you to adjust the time to a specific time zone _relative_to_the_timezone_of_the_server_, this means that if the server is in the US (-5) and you want the guestbook's time to show UK time (+0) then you would set the time difference to +5 to accomodate the difference in time. Now comes the entry list specific configuration, firstly "$entries_per_page" tells the script how many guestbook entries to show on a particular page, if this is set to "0" then _all_ the guestbook entries will be shown on one page however, if this is "5" then only 5 entries will be shown (there will be "Next page" and/or "Previous page buttons if needed! Speaking of which:). "$prev_page_link" is the HTML to show in order to access the previous page in the guestbook, this defaults to 'Prev. page' which as you can see is a simple HTML link with the text "Prev. page" that links back a page, the "guestbook.cgi?pagenumber=[>PREVPAGENUMBER<]" is the text that you should use for linking to a previous page within your templates. Sometimes (ie on the first page of the guestbook!) there won't be a previous page and so there is no point in displaying the link, for this reason we also have "$no_prev_page" which is displayed instead of "$prev_page_link" when no previous page is available, by default this is simply set to " " to avoid any design corruption problems! The next page stuff is very similar to the previous page stuff except that it is configured with "$next_page_link" and "$no_next_page" instead of the "$prev_page_link" and "$no_prev_page" variables, but the details are very similar (use "guestbook.cgi?pagenumber=[>NEXTPAGENUMBER<]" for the next page link though!). IMPORTANT: When the files have been uploaded onto the server there a couple of things that you _have_ to do to make the script work, firstly the "guestbook.cgi", "guestbookadmin.cgi", "routines.cgi" and "config.cgi" must be made executable (using CHMOD 755) as the "config.cgi" must not be world-readable (if the server tries to execute it then it won't be world-readable - hence 755) alternatively you can use some kind of protection system (as i'm sure you'll have to on an NT system). That should be enough to make the script work. 3. Making the necessary tables ------------------------------ PLEASE NOTE: All database/table fields are case-sensitive! [ See example_tables.sql for a simple set of tables ] Once the basic configuration has been done and the appropriate MySQL database has been setup you can begin to construct your guestbook. There are two mandatory fields within the tables, these are the first two, the first one must be called "id", have the type "int not null auto_increment" and be set as the primary key, the second mandatory field is the date/time field, this must be the second field and have type "datetime", it can be called anything that you want as long as it complies to MySQL naming conventions, ie to construct the simplist possible table for using the guestbook, the following MySQL statement could be used; CREATE TABLE guestbook (id int not null auto_increment, primary_key(id), edate datetime) which would create a table looking like so; +---------+--------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +---------+--------------+------+-----+---------+----------------+ | id | int(11) | | PRI | NULL | auto_increment | | edate | datetime | YES | | NULL | | +---------+--------------+------+-----+---------+----------------+ and could be used for holding our guestbook information, however, this isn't going to be a very exciting guestbook is it? No, so for this reason we need to add extra fields to hold our data! My example tables that I used looked something like this ; +---------+--------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +---------+--------------+------+-----+---------+----------------+ | id | int(11) | | PRI | NULL | auto_increment | | edate | datetime | YES | | NULL | | | name | varchar(100) | YES | | NULL | | | comment | text | YES | | NULL | | +---------+--------------+------+-----+---------+----------------+ which was used to hold a name and a comment, nothing else. You can use any fields that you wanted, with any names to hold any data! For help on creating your tables you could use my MySQL Control Panel, freely downloadable from https://www.mattsscripts.co.uk/mpanel.htm. Note that you need two tables within your database for using this guestbook, one named the same as "$db_table" is set in the config.cgi file and one called "$db_table"_pending (ie, "guestbook" and "guestbook_pending" would work), both of these tables should be _identical_ in field structure, the only difference should be the name of the table! If you are not familiar with MySQL and it's field types then you can always see the documentation on the MySQL website (https://www.mysql.com/) for help and pointers in the right direction. 4. Constructing usable templates -------------------------------- The templates are very easy to configure and take little to no time to do, I have provided a couple of very simple templates to go with the example tables, the "$results_page_template" is the page design which is used to hold the guestbook entries, within this page there are a couple of template macros which should be used; [>GUESTBOOK_ENTRIES<] : Used to tell the script where to place the guestbook entries within the design, this will be replaced by a list of all the entries within the database. [>PREV_PAGE<] : If needed this will be replaced by the configured "$prev_page_link", or if not needed it will be replaced by "$no_prev_page". [>NEXT_PAGE<] : This will be replaced by the "$next_page_link" when needed, or "$no_next_page" if it is not necessary. More important is the "$results_template" template file, this contains the template for each individual entry in the guestbook, within this file the fields within the main table are used as macros, each one being surrounded by "[>" and "<]" and is case sensitive, this doesn't make much sense, however, if I show with examples it might make more sense, eg in my example tables I have a field called "comment", by placing the macro "[>comment<]" (no speech marks) in this template file the script will replace it with the value in the "comment" field for that particular entry of the guestbook, does that make sense? For some help it would be a good idea to see the provdided "results_template.html" file. For each entry within the guestbook database an entry using the results template file will be constructed and added to a long list, this list will then replace the "[>GUESTBOOK_ENTRIES<]" macro within the main template design file. [ I realise this is a bit awkward to follow but try it and see if you can catch on ] 5. Posting entries to the guestbook ----------------------------------- The provided html file "comment.html" holds an example html form to post to the example tables. For your own tables this file should not be used as it will be fairly useless! To post to the guestbook your form should use "action=/" and have a hidden field called "action" with value "post", eg;
After this any input fields or fields of any sort should refer to a field in your database, remember that the fields are case-sensitive and hence "NAME" is not the same as "name"! If there is a field within your database called "name" and you have an input box in your form called "name" then the contents of this input box will be entered in the field "name", the same applies for other fields - no matter what they are called, a form field of name "abcdef" would go into the database field "abcdef" (provided the database field existed!). You will probably want to use a form field of some type for each field of your database, you should not however use form fields for the first two database fields (the primary key (id) field or the date/time field) as these are automatically set by the database, if you require a date/time field then you should use one other than the second field. 6. Authorising entries or updating existing entries --------------------------------------------------- There is a script which can be used to authorise posted entries and update entries that are already in the guestbook (foul language, slander etc) called "guestbookadmin.cgi", by loading this page in your internet browser (https://domain.name/guestbookadmin.cgi) you will be prompted for you username and password, you should have already configured this in config.cgi and you should enter them here. Once you have logged in you will be presented with two options; Manage existing entries Manage pending entries The first one "Manage existing entries" can be used to alter entries that are already present within the database and the user interface should be fairly self explanatory, edit the text within one of the fields and then click the "Update" button, you can also delete entries using the "Delete" button. The second option, "Manage pending entries" is the option to see all the entries that are awaiting authorisation to be entered into the main guestbook listing, you can either "Accept" or "Deny" each entry and optionally edit the entry before "Accept"ing or "Deny"ing it, which of course can be very useful if people try to put html within their entries - which could be disasterous if it get onto your site! 7. Credits ---------- This guestbook script was written by Matt Wilson and is licensed under the GPL (see COPYING for details) mguestbook/guestbookadmin.cgi0100755000175000017500000001170407447212307015445 0ustar mattmatt#!/usr/bin/perl use CGI qw/:standard/; use DBI; local $admin_username; local $admin_password; require 'config.cgi'; require 'routines.cgi'; sub login { if($gbusername || $gbpassword){ print div( { -align => 'center' }, 'You entered an invalid username/password combination' ); } print start_form, hidden( -name => 'area', -value => 'show_menu'), table( { -align => 'center' }, Tr( [ td( [ 'Username', textfield( -name => 'gbusername', size => '50' ) ] ), td( [ 'Password', password_field( -name => 'gbpassword', size => '50' ) ] ), td( { -colspan => '2' }, submit( -name => 'action', -value => 'Login' ) ) ] ) ), end_form, end_html; exit; }; sub show_menu { print 'Manage existing entries
Manage pending entries'; exit; } sub list_pending { $q = $db->prepare("SELECT * FROM ".$db_table."_pending"); $q->execute; if($q->rows){ while($r = $q->fetchrow_hashref){ print "", ""; for($l=1; $l<@fields; $l++) { print Tr( td( [ ''.$fields[$l], textfield( -name => $fields[$l], -value => $r->{$fields[$l]}, -size => 50 ) ] ) ); } print Tr( td( [ "".submit( -value => 'Accept', -name => 'action' )."", "
".submit( -value => 'Deny', -name => 'action' )."" ] ) ), "
", br; } } else { print 'There are no entries awaiting authorisation for the guestbook'; } print br,br, 'Main menu'; exit; }; sub accept_pending { my @contents; $qu = 'INSERT INTO '.$db_table.' VALUES (NULL'; for($l=1; $l<@fields; $l++){ $qu .= ', ?'; push @contents, param($fields[$l]); } $qu .= ')'; $q = $db->prepare($qu); $q->execute(@contents); $q = $db->prepare("DELETE FROM ".$db_table."_pending WHERE id=?"); $q->execute(param('id')); &list_pending; }; sub deny_pending { $q = $db->prepare("DELETE FROM ".$db_table."_pending WHERE id=?"); $q->execute(param('id')); &list_pending; }; sub list_existing { $q = $db->prepare("SELECT * FROM ".$db_table); $q->execute; if($q->rows){ while($r = $q->fetchrow_hashref){ print "", ""; for($l=1; $l<@fields; $l++) { print Tr( td( [ ''.$fields[$l], textfield( -name => $fields[$l], -value => $r->{$fields[$l]}, -size => 50 ) ] ) ); } print Tr( td( [ "".submit( -value => 'Update', -name => 'action' )."", "
".submit( -value => 'Delete', -name => 'action' )."" ] ) ), "
", br; } } else { print 'There are no entries in the guestbook for you to administer at this time!'; } print br,br,'Main menu'; exit; }; sub update_existing { my @contents; $query = 'UPDATE '.$db_table.' SET '; for($l=1; $l<@fields; $l++){ push @qu, $fields[$l].'=?'; push @contents, param($fields[$l]); } $query .= join ',', @qu; $query .= ' WHERE id=?'; $r = $db->prepare($query); $r->execute(@contents, param('id')); &list_existing; }; sub delete_existing { $q = $db->prepare("DELETE FROM ".$db_table." WHERE id=?"); $q->execute(param('id')); &list_existing; }; my $area = param('area'); my $action = param('action'); local $gbusername; local $gbpassword; if($action eq 'Login') { $gbusername = param('gbusername'); $gbpassword = param('gbpassword'); local $c_username = cookie( -name => 'username', -value => $gbusername ); local $c_password = cookie( -name => 'password', -value => $gbpassword ); print header( -cookie => [$c_username, $c_password] ); } else { $gbusername = cookie('username'); $gbpassword = cookie('password'); print header; } if($gbusername ne $admin_username or $gbpassword ne $admin_password) { &login; } print start_html( -title => 'Guestbook admin', -bgcolor => 'white' ), '
'; local $db = &db_connect; local @fields = &list_fields($db); #if($area eq 'show_menu') { # &show_menu; #} if($area eq 'pending') { if($action eq 'Accept') { &accept_pending; } elsif($action eq 'Deny') { &deny_pending; } else { &list_pending; } } if($area eq 'existing') { if($action eq 'Update') { &update_existing; } elsif($action eq 'Delete') { &delete_existing; } else { &list_existing; } } #&login; &show_menu; print '
', end_html; mguestbook/example_tables.sql0100644000175000017500000000115007320063211015427 0ustar mattmatt# MySQL dump 8.13 # # Host: localhost Database: myguestbook #-------------------------------------------------------- # Server version 3.23.36-log # # Table structure for table 'guestbook' # CREATE TABLE guestbook ( id int(11) NOT NULL auto_increment, edate datetime default NULL, name varchar(100) default NULL, comment text, PRIMARY KEY (id) ) TYPE=MyISAM; # # Table structure for table 'guestbook_pending' # CREATE TABLE guestbook_pending ( id int(11) NOT NULL auto_increment, edate datetime default NULL, name varchar(100) default NULL, comment text, PRIMARY KEY (id) ) TYPE=MyISAM; mguestbook/config.cgi0100755000175000017500000000454707320302626013700 0ustar mattmatt# Welcome to the configuration file :) # Firstly, lets set the admin's username and password $admin_username = 'admin'; $admin_password = 'password'; # this tells us whether or not the administrator must authoirse each entry being entered (good idea!) $admin_authorisation = 1; # Now lets set the name of the database, the database hostname and the usernmame/password for the database $db_name = 'myguestbook'; $db_host = 'localhost'; $db_username = 'guestbook'; $db_password = 'password'; # The name of the table that we are using for our guestbook $db_table = 'guestbook'; # Where to redirect the client to after posting a comment/entry $okpost_redirect = 'thanks.html'; # Should we enable content control? (1 = check posted entries for swear words etc, 0 = post the entries no matter what the content) $content_control = 1; # The URL to redirect the user to in case of a breach of content control $badcontent_redirect = 'badcontent.html'; # This is an array of words that should alert the content control (examples) @bad_words = ( 'fuck', 'fucking', 'shit', 'shitting', 'bastard', 'nigger', 'twat', 'bollocks', 'cunt', 'wank', 'wanker' ); # the results page template $results_page_template = 'results.html'; # the results template $results_template = 'results_template.html'; # the format of the date field (if used see https://www.mysql.com/doc/D/a/Date_and_time_functions.html under header "DATE_FORMAT") # this would be `2nd Jul 2001 @ 2:32:03' #$date_format = '%D %b %Y @ %T '; # this would be '2:32:03 on 2nd Jul 2001' $date_format = '%T on %D %b %Y'; # this handles the time difference from the time on the server (ie if the server is in US time and you want UK time then this is 5 because US is 5 hours behind the UK, gettit?) $time_diff = 0; # this is the number of entries to show per page - to show _all_ the entries set this to 0 $entries_per_page = 5; # the link to a previous page, [>PREVPAGENUMBER<] will be replaced by the appropriate page number (by the script!) $prev_page_link = 'Prev. page'; # in case there aren't any more pages! $no_prev_page = ' '; # and the same for the next page link, for this one [>NEXTPAGENUMBER<] is changed $next_page_link = 'Next page'; # and in case there aren't any more pages $no_next_page = ' '; 1; mguestbook/results_template.html0100644000175000017500000000025007317747653016234 0ustar mattmatt
Comment posted by [>name<] @ [>edate<]
Comment[>comment<]

mguestbook/comment.html0100644000175000017500000000026507317062541014272 0ustar mattmatt
Name:
Comment:
mguestbook/results.html0100644000175000017500000000046007317747320014333 0ustar mattmatt Testing results
Here are the entries in the guestbook

[>GUESTBOOK_ENTRIES<]
[>PREV_PAGE<]
[>NEXT_PAGE<]
mguestbook/guestbook.cgi0100755000175000017500000000621707447212470014440 0ustar mattmatt#!/usr/bin/perl use CGI qw/:standard/; use DBI; local $okpost_redirect; local $results_page_template; local $bad_words; local $no_next_page; local $content_control; local $no_prev_page; local $results_template; local $date_format; local $time_diff; local $admin_authorisation; local $badcontent_redirect; require 'config.cgi'; require 'routines.cgi'; local $db = &db_connect; local @fields = &list_fields($db); sub post_guestbook { # we get rid of the first two elements cos we dont want them when posting (id and date) splice @fields, 0, 2; my @contents; foreach (@fields) { push @contents, param($_); } if($content_control eq 1) { foreach $c (@contents) { foreach $b (@bad_words) { if($c =~ m/(^|\s|\.|\!|;|\:|\(|\)|\-|"|'|`|\<|\>|\?|\#|\[|\]|\&|\|\/|,)$b(\s|\.|\!|;|\:|\(|\)|\-|"|'|`|\<|\>|\?|\#|\[|\]|\&|$|\|\/|,)/gi) { print redirect($badcontent_redirect); exit; } } } } if($admin_authorisation eq 1) { $q = $db->prepare('INSERT INTO '.$db_table.'_pending VALUES (NULL, NOW()'.(',?' x @fields).')'); } else { $q = $db->prepare('INSERT INTO '.$db_table.' VALUES (NULL, NOW()'.(',?' x @fields).')'); } $q->execute(@contents); print redirect($okpost_redirect); exit; } sub show_entries { $pn = param('pagenumber'); # load the template files into buffers open $fd, '<'.$results_page_template; $page_template = join '', <$fd>; close $fd; open $fd, '<'.$results_template; $result_template = join '', <$fd>; close $fd; if(!$pn) { $pn = 0; } # ok, you might be wondering about the sanity of this next section, with me using ` as _original' and then formatting the to fit in , right? well, this just speeds up the substitution loop cos I don't have to do them individually (to make sure I don't substitute the original datefield value, savve? $qu = 'SELECT '.$fields[0].', '.$fields[1].' AS '.$fields[1].'_original, DATE_FORMAT(DATE_ADD('.$fields[1].', INTERVAL '.$time_diff.' HOUR), "'.$date_format.'") AS '.$fields[1]; for($l=2; $l<@fields; $l++){ $qu .= ', '.$fields[$l]; } $qu .= ' FROM '.$db_table.' ORDER BY '.$fields[1].'_original DESC'; if($entries_per_page gt 0) { $qu .= ' LIMIT '.($pn*$entries_per_page).','.($entries_per_page+1); } $q = $db->prepare($qu); $q->execute; $results = ''; for($l=0; $l<$entries_per_page; $l++) { if($r = $q->fetchrow_hashref) { $res = $result_template; foreach (@fields) { $res =~ s/\[>$_<\]/$r->{$_}/g; } $results .= $res; } else { last; } } $page_template =~ s/\[>GUESTBOOK_ENTRIES<\]/$results/g; if($pn eq 0 or $entries_per_page eq 0) { $page_template =~ s/\[>PREV_PAGE<\]/$no_prev_page/g; } else { $npn = $pn - 1; $prev_page_link =~ s/\[>PREVPAGENUMBER<\]/$npn/g; $page_template =~ s/\[>PREV_PAGE<\]/$prev_page_link/g; } if($q->rows eq ($entries_per_page+1) and $entries_per_page gt 0) { $npn = $pn + 1; $next_page_link =~ s/\[>NEXTPAGENUMBER<\]/$npn/g; $page_template =~ s/\[>NEXT_PAGE<\]/$next_page_link/g; } else { $page_template =~ s/\[>NEXT_PAGE<\]/$no_next_page/g; } print header, $page_template; exit; } if(lc(param('action')) eq 'post') { &post_guestbook; } &show_entries; mguestbook/COPYING0100644000175000017500000004431107320070541012766 0ustar mattmatt NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". Also note that the GPL below is copyrighted by the Free Software Foundation, but the instance of code that it refers to (the Linux kernel) is copyrighted by me and others who actually wrote it. Also note that the only valid version of the GPL as far as the kernel is concerned is _this_ license (ie v2), unless explicitly otherwise stated. Linus Torvalds ---------------------------------------- GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. 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The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term "modification".) Each licensee is addressed as "you". Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. The act of running the Program is not restricted, and the output from the Program is covered only if its contents constitute a work based on the Program (independent of having been made by running the Program). Whether that is true depends on what the Program does. 1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program. You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. 2. You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided that you also meet all of these conditions: a) You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change. b) You must cause any work that you distribute or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License. c) If the modified program normally reads commands interactively when run, you must cause it, when started running for such interactive use in the most ordinary way, to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute the program under these conditions, and telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but does not normally print such an announcement, your work based on the Program is not required to print an announcement.) These requirements apply to the modified work as a whole. If identifiable sections of that work are not derived from the Program, and can be reasonably considered independent and separate works in themselves, then this License, and its terms, do not apply to those sections when you distribute them as separate works. But when you distribute the same sections as part of a whole which is a work based on the Program, the distribution of the whole must be on the terms of this License, whose permissions for other licensees extend to the entire whole, and thus to each and every part regardless of who wrote it. Thus, it is not the intent of this section to claim rights or contest your rights to work written entirely by you; rather, the intent is to exercise the right to control the distribution of derivative or collective works based on the Program. In addition, mere aggregation of another work not based on the Program with the Program (or with a work based on the Program) on a volume of a storage or distribution medium does not bring the other work under the scope of this License. 3. You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following: a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, c) Accompany it with the information you received as to the offer to distribute corresponding source code. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer, in accord with Subsection b above.) The source code for a work means the preferred form of the work for making modifications to it. For an executable work, complete source code means all the source code for all modules it contains, plus any associated interface definition files, plus the scripts used to control compilation and installation of the executable. However, as a special exception, the source code distributed need not include anything that is normally distributed (in either source or binary form) with the major components (compiler, kernel, and so on) of the operating system on which the executable runs, unless that component itself accompanies the executable. If distribution of executable or object code is made by offering access to copy from a designated place, then offering equivalent access to copy the source code from the same place counts as distribution of the source code, even though third parties are not compelled to copy the source along with the object code. 4. You may not copy, modify, sublicense, or distribute the Program except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense or distribute the Program is void, and will automatically terminate your rights under this License. However, parties who have received copies, or rights, from you under this License will not have their licenses terminated so long as such parties remain in full compliance. 5. You are not required to accept this License, since you have not signed it. However, nothing else grants you permission to modify or distribute the Program or its derivative works. These actions are prohibited by law if you do not accept this License. Therefore, by modifying or distributing the Program (or any work based on the Program), you indicate your acceptance of this License to do so, and all its terms and conditions for copying, distributing or modifying the Program or works based on it. 6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. You are not responsible for enforcing compliance by third parties to this License. 7. If, as a consequence of a court judgment or allegation of patent infringement or for any other reason (not limited to patent issues), conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot distribute so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not distribute the Program at all. For example, if a patent license would not permit royalty-free redistribution of the Program by all those who receive copies directly or indirectly through you, then the only way you could satisfy both it and this License would be to refrain entirely from distribution of the Program. If any portion of this section is held invalid or unenforceable under any particular circumstance, the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances. It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims; this section has the sole purpose of protecting the integrity of the free software distribution system, which is implemented by public license practices. Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system; it is up to the author/donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice. This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License. 8. If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation. 10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. NO WARRANTY 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) 19yy 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) 19yy name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Library General Public License instead of this License.