boinc/html/inc/forum.inc

521 lines
20 KiB
PHP

<?php
$cvs_version_tracker[]="\$Id$"; //Generated automatically - do not edit
require_once('../inc/db.inc');
require_once('../inc/db_forum.inc');
require_once('../inc/sanitize_html.inc');
require_once('../inc/time.inc');
require_once('../inc/forum_moderators.inc');
define('AVATAR_WIDTH', 100);
define('AVATAR_HEIGHT',100);
$special_user_bitfield[0]="Forum moderator";
$special_user_bitfield[1]="Project administrator";
$special_user_bitfield[2]="Project developer";
$special_user_bitfield[3]="Project tester";
$special_user_bitfield[4]="Volunteer developer";
$special_user_bitfield[5]="Volunteer tester";
$special_user_bitfield[6]="Project scientist";
define('ST_NEW_TIME', 1209600); //3600*24*14 - 14 days
define('ST_NEW', 'New member');
define('MAXIMUM_EDIT_TIME',3600); //Maximally allow edits of forums posts up till one hour after posting.
define('FORUM_OPEN_LINK_IN_NEW_WINDOW',1);
define('MAX_FORUM_LOGGING_TIME', 604800); //3600*24*7 - 7 days
define('NO_CONTROLS', 0);
define('FORUM_CONTROLS', 1);
define('HELPDESK_CONTROLS', 2);
define("EXCERPT_LENGTH", "120");
define('NEW_IMAGE', 'img/unread_post.png');
define('NEW_IMAGE_STICKY', 'img/unread_sticky.png');
define('STICKY_IMAGE', 'img/sticky_post.png');
define('NEW_IMAGE_HEIGHT','15');
define('EMPHASIZE_IMAGE', 'img/emphasized_post.png');
define('EMPHASIZE_IMAGE_HEIGHT','15');
define('FILTER_IMAGE', 'img/filtered_post.png');
define('FILTER_IMAGE_HEIGHT','15');
define('RATE_POSITIVE_IMAGE', 'img/rate_positive.png');
define('RATE_POSITIVE_IMAGE_HEIGHT','9');
define('RATE_NEGATIVE_IMAGE', 'img/rate_negative.png');
define('RATE_NEGATIVE_IMAGE_HEIGHT','9');
define ('SOLUTION', 'This answered my question');
define ('SUFFERER', 'I also have this question');
define ('OFF_TOPIC', 'Off-topic');
define ('DEFAULT_LOW_RATING_THRESHOLD', -25);
define ('DEFAULT_HIGH_RATING_THRESHOLD', 5);
$forum_sort_styles['modified-new'] = "Most recent post first";
$forum_sort_styles['modified-old'] = "Least recent post first";
//$forum_sort_styles['activity-most'] = "Most recent activity first";
$forum_sort_styles['views-most'] = "Most views first";
$forum_sort_styles['replies-most'] = "Most posts first";
$thread_sort_styles['timestamp'] = "Newest first";
$thread_sort_styles['timestamp_asc'] = "Oldest first";
$thread_sort_styles['score'] = "Highest rated first";
$faq_sort_styles['create_time'] = "Most recent question first";
$faq_sort_styles['timestamp'] = "Most recent answer first";
$faq_sort_styles['activity'] = "Most frequently asked first";
$answer_sort_styles['score'] = "Highest score first";
$answer_sort_styles['timestamp'] = "Most recent first";
$answer_sort_styles['timestamp_asc'] = "Oldest first";
$thread_filter_styles['2'] = "\"Very helpful\"";
$thread_filter_styles['1'] = "At least \"helpful\"";
$thread_filter_styles['0'] = "At least \"neutral\"";
$thread_filter_styles['-1'] = "At least \"unhelpful\"";
$thread_filter_styles['-2'] = "All posts";
$post_ratings['2'] = "Very helpful (+2)";
$post_ratings['1'] = "Helpful (+1)";
$post_ratings['0'] = "Neutral";
$post_ratings['-1'] = "Not helpful (-1)";
$post_ratings['-2'] = "Off topic (-2)";
// process a user-supplied title to remove HTML stuff
//
function cleanup_title($title) {
$x = trim(htmlspecialchars(strip_tags($title)));
$x = stripslashes($x); // clean up funky old titles in DB
if (strlen($x)==0) return "(no title)";
else return $x;
}
/* Check if user has special user bit enabled */
function isSpecialUser($user, $specialbit){
return (substr($user->special_user, $specialbit,1)==1);
}
function getHasRated($user, $postid){
return (strstr($user->rated_posts,"|".$postid));
}
function getSortStyle($user,$place){
if ($user->id!=""){
list($forum,$thread,$faq,$answer)=explode("|",$user->sorting);
} else {
list($forum,$thread,$faq,$answer)=explode("|",$_COOKIE['sorting']);
}
return $$place;
}
// display functions
function show_posts($thread, $sort_style, $filter, $show_controls=true, $do_coloring=true, $is_helpdesk=false) {
global $logged_in_user;
$n = 1;
if ($show_controls && !$is_helpdesk) {
$controls = FORUM_CONTROLS;
} else if ($show_controls && $is_helpdesk) {
$controls = HELPDESK_CONTROLS;
} else {
$controls = NO_CONTROLS;
}
if (isSpecialUser($logged_in_user,0)){ // If logged in user is moderator
$show_hidden_posts = true; // let him see all posts - including hidden ones
} else {
$show_hidden_posts = false;
}
$posts = getPosts($thread->id, -1, -1, $sort_style, $show_hidden_posts);
$logged_in_user = getThreadLastVisited($logged_in_user,$thread);
setThreadLastVisited($logged_in_user,$thread);
$firstPost = getFirstPost($thread->id);
if ($is_helpdesk) {
if ($firstPost) {
show_post($firstPost, $thread, $logged_in_user, $n, $controls, true,$filter);
if ($firstPost->timestamp>$logged_in_user->thread_last_visited){
$first_unread_post=$firstPost;
}
}
}
while ($post = mysql_fetch_object($posts)) {
if (!$is_helpdesk || ($is_helpdesk && $post->id != $firstPost->id)) {
show_post($post, $thread, $logged_in_user, $n, $controls, false, $filter);
if ($do_coloring) $n = ($n+1)%2;
if (($post->timestamp>$logged_in_user->thread_last_visited) && (($post->timestamp<$first_unread_post->timestamp) || $first_unread_post->timestamp==0)){
$first_unread_post=$post;
}
}
}
if ($logged_in_user->jump_to_unread){
if ($first_unread_post->id!=""){
echo "<script>function jumpToUnread(){location.href='#".$first_unread_post->id."';}</script>";
} else {
echo "<script>function jumpToUnread(){};</script>";
}
}
}
function show_post($post, $thread, $logged_in_user, $n, $controls=FORUM_CONTROLS, $separate=false, $filter=true) {
global $post_ratings; // <------ Old obsolete rating method (remove someday)
$user = lookup_user_id($post->user);
$user = getForumPreferences($user);
$data = mysql_query("SELECT userid FROM profile WHERE userid = " . $user->id); //Lookup existance of profile for user
$user->has_profile = (mysql_numrows($data) > 0); //and store this info in the user object
$user->has_avatar = ($user->avatar != ""); //for later access
//If the user that made this post is on the list of people to ignore, change thresholds to be more strict
if (in_array($user->id,explode("|",$logged_in_user->ignorelist))){
$user_is_on_ignorelist=true;
$rated_below_threshold = ($logged_in_user->high_rating_threshold>($post->score*$post->votes));
$rated_above_threshold = ($logged_in_user->high_rating_threshold+abs($logged_in_user->low_rating_threshold)<($post->score*$post->votes));
} else { //Use normal threshold values
$rated_below_threshold = ($logged_in_user->low_rating_threshold>($post->score*$post->votes));
$rated_above_threshold = ($logged_in_user->high_rating_threshold<($post->score*$post->votes));
}
$can_edit = $logged_in_user && $user->id == $logged_in_user->id;
echo "
<tr class=\"row$n\" valign=\"top\">
<td>
<a name=\"$post->id\"></a>
";
echo user_links($user, URL_BASE);
echo "<br>";
global $special_user_bitfield;
if ($user->special_user) { //If this user is somehow special
$keys = array_keys($special_user_bitfield);
for ($i=0; $i<sizeof($special_user_bitfield);$i++){
if (isSpecialUser($user,$keys[$i])) $fstatus.=$special_user_bitfield[$keys[$i]]."<br>";
}
} else {
if ($user->create_time>time()-ST_NEW_TIME) $fstatus=ST_NEW."<br>";
/*...*/
}
if ($fstatus) echo "<font size=\"-2\">$fstatus</font>";
echo "<font size=-2>";
if (!$filter || !$rated_below_threshold){
if ($user->has_avatar and $logged_in_user->hide_avatars!=1) {
echo "<img width=\"".AVATAR_WIDTH."\" height=\"".AVATAR_HEIGHT."\" src=\"".$user->avatar."\" alt=\"Avatar\"><br>";
}
echo "Joined: ", gmdate('M j, Y', $user->create_time), "<br>Posts: $user->posts<br>";
}
// circumvent various forms of identity spoofing
// by displaying the user id of the poster.
// its cheap, easy, and doesn't require any additional database calls.
echo "ID: $user->id<br>";
echo "</font></td><td>
";
if ($controls == FORUM_CONTROLS || $controls == HELPDESK_CONTROLS) {
echo "<form action=\"forum_rate.php?post=", $post->id, "\" method=\"post\">";
}
echo "
<table width=\"100%\" cellpadding=0 cellspacing=0 border=0>
<tr valign=top>
<td align=left style=\"border:0px\"><font size=-2>";
if ($post->timestamp>$logged_in_user->thread_last_visited){
echo "<img src=\"".NEW_IMAGE."\" alt=\"Unread post\" height=\"".NEW_IMAGE_HEIGHT."\">";
}
if ($rated_above_threshold){
echo "<img src=\"".EMPHASIZE_IMAGE."\" alt=\"!\" height=\"".EMPHASIZE_IMAGE_HEIGHT."\">";
}
if ($post->hidden) echo "<font color=red>[deleted] </font>";
echo "
Posted: ", pretty_time_str($post->timestamp);
;
if ($post->parent_post) echo " - in response to <a href=\"#$post->parent_post\">Message ID $post->parent_post</a>.";
if ($can_edit && $controls != NO_CONTROLS) echo "&nbsp;<a href=\"forum_edit.php?id=$post->id\">[Edit this post]</a>";
if (isSpecialUser($logged_in_user,0)) show_post_moderation_links($post); //If user is moderator, show links
if ($post->modified) echo "<br>Last modified: ", pretty_time_Str($post->modified);
if ($rated_below_threshold && $filter){
if ($user_is_on_ignorelist) $andtext=" and the user is on your ignore list";
echo "<br>This post has been filtered (rating: ".($post->score * $post->votes).")$andtext, press <a href=\"?id=".$thread->id."&amp;filter=false#".$post->id."\">here</a> to view this thread without filtering";
}
echo "\n</font></td>\n";
if ($controls == FORUM_CONTROLS) {
//no special controls in forum
} else if ($controls == HELPDESK_CONTROLS && $separate) {
echo "
<td align=right style=\"border:0px\">
<input type=submit name=submit value=\"", SUFFERER, "\">
</td>
";
} else if ($controls == HELPDESK_CONTROLS && !$separate) {
echo "
<td align=right style=\"border:0px\">
<input type=submit name=submit value=\"", SOLUTION, "\">
<input type=submit name=submit value=\"", OFF_TOPIC, "\">
</td>
";
}
echo "</tr>\n</table>\n";
if ($controls == FORUM_CONTROLS || $controls == HELPDESK_CONTROLS) {
echo "</form>";
}
//If either filtering is turned off of this post is not below the threshold
if (!$filter || !$rated_below_threshold){
$posttext=nl2br(stripslashes($post->content));
if ($post->signature && !$logged_in_user->hide_signatures){ //If the creator of this post has a signature and
$posttext.=nl2br("\n".stripslashes($user->signature)); //wants it to be shown for this post AND the logged in
} //user has signatures enabled: show it
if ($logged_in_user->images_as_links==1){
$posttext=image_as_link($posttext);
}
if ($logged_in_user->link_popup==1){
$posttext=externalize_links($posttext);
}
echo "<p>", $posttext, "</p>";
echo "<table width=\"100%\" cellspacing=0 cellpadding=0>
<tr valign=\"bottom\">
<td style=\"border:0px;\"><font size=-2><i>ID: ", $post->id;
if ($controls == HELPDESK_CONTROLS && $separate) {
echo "</i></font></td>";
} else if ($controls == HELPDESK_CONTROLS && !$separate) {
echo " / Score: ", round(($post->score * $post->votes),0), "</i></font></td>";
} else {
echo " / Rating: ", round(intval(($post->score * $post->votes)+0.01),0), "</i> - rate: <a href=\"forum_rate.php?post=".$post->id."&amp;choice=p\"><img src=\"".RATE_POSITIVE_IMAGE."\" alt=\"+\" height=\"".RATE_POSITIVE_IMAGE_HEIGHT."\" border=0></a> / <a href=\"forum_rate.php?post=".$post->id."&amp;choice=n\"><img src=\"".RATE_NEGATIVE_IMAGE."\" alt=\"-\" height=\"".RATE_NEGATIVE_IMAGE_HEIGHT."\" border=0></a></font></td>";
}
if ($controls == FORUM_CONTROLS) {
echo "<td align=right style=\"border:0px\">[<a href=\"forum_reply.php?thread=" . $thread->id . "&amp;post=" . $post->id . "#input\">Reply to this post</a>]</td>";
} else if ($controls == HELPDESK_CONTROLS && !$separate) {
echo "<td align=right style=\"border:0px\">[<a href=\"forum_reply.php?thread=" . $thread->id . "&amp;post=" . $post->id . "&helpdesk=1#input\">Reply to this answer</a>]</td>";
}
echo "</tr></table>";
}
echo "</td></tr>";
if ($separate) {
echo "
</table>
<br><br>
<table border=0 cellpadding=5 cellspacing=0 width=100%>
<tr>
<th>Author</th>
<th>Answers</th>
";
}
}
// utility functions
function externalize_links($text){
$i=0;$linkpos=true;
while (true){ //Find a link
$linkpos=strpos($text,"<a ",$i);
if ($linkpos===false) break;
$out.= substr($text,$i,$linkpos-$i)."<a target=\"_new\" "; //Replace with target='_new'
$i=$linkpos+3;
}
$out.=substr($text,$i);
return $out;
}
function image_as_link($text){
/* This function depends on sanitized HTML - always use KSES or equivalent before using this */
$i=0;
while (true){ //Find an image
$imgpos=strpos($text,"<img ",$i);
if ($imgpos===false) break;
$out.= substr($text,$i,$imgpos-$i)."<a href="; //Replace with link start
$temp1=strpos($text,"src=",$imgpos)+5; //Find the image source
$temp2=strpos($text,">",$imgpos)+1; //Or the end of the tag
if ($temp1<$temp2){ //If source was found within tag
$temp3=strpos($text,"\"",$temp1); //Find the end of source
$out.=substr($text,$temp1,$temp3-$temp1); //output the source
}
$out.=">[Image link]</a>";
$i=$temp2; //Now move to end of tag to continue
}
$out.=substr($text,$i); //Output the rest
return $out;
}
function start_forum_table($headings) {
start_table();
echo "<tr>";
for ($i=0; $i<count($headings); $i++) {
$title = $headings[$i];
echo "<th class=heading>$title</th>";
}
echo "</tr>\n";
}
function end_forum_table() {
echo "</table>\n";
}
// generate a "select" element from an array of values
//
function select_from_array($name, $array, $selection) {
$out= "<select name=\"$name\">";
foreach ($array as $key => $value) {
$out.= "<option ";
if ($key == $selection) {
$out.= "selected ";
}
$out.= "value=\"". $key. "\">". $value. "</option>";
}
$out.= "</select>";
return $out;
}
function show_select_from_array($name, $array, $selection) {
echo select_from_array($name,$array,$selection);
}
function show_forum_title($forum=NULL, $thread=NULL, $helpdesk=false) {
echo "<p>\n";
if (!$forum && !$thread) {
echo "<p class=\"title\">";
if ($helpdesk) {
echo " Questions and problems</p>";
} else {
echo " Message boards</p>";
}
} else if ($forum && !$thread) {
echo "<span class=title>";
if ($helpdesk) {
echo "<a href=\"forum_help_desk.php\">", " Questions and problems</a> : ";
} else {
echo "<a href=\"forum_index.php\">", " Message boards</a> : ";
}
echo $forum->title;
echo "</span><br>";
} else if ($forum && $thread) {
echo "<span class=title>";
if ($helpdesk) {
echo "<a href=\"forum_help_desk.php\">", " Questions and problems</a> : ";
} else {
echo "<a href=\"forum_index.php\">", " Message boards</a> : ";
}
echo "<a href=\"forum_forum.php?id=$forum->id\">", $forum->title, "</a> : ";
echo cleanup_title($thread->title);
echo "</span><br>";
} else {
echo "Invalid input to show_forum_title<br>";
}
echo "</p>\n";
}
// show a thread with its context (e.g. for search results)
//
function show_thread($thread, $n) {
$forum = getForum($thread->forum);
$category = getCategory($forum->category);
$first_post = getFirstPost($thread->id);
$title = cleanup_title($thread->title);
$where = $category->is_helpdesk?"Questions and answers":"Message boards";
$top_url = $category->is_helpdesk?"forum_help_desk.php":"forum_index.php";
$excerpt = sub_sentence(stripslashes($first_post->content), ' ', EXCERPT_LENGTH, true);
$posted = time_diff_str($thread->create_time, time());
$last = time_diff_str($thread->timestamp, time());
$m = $n%2;
echo "
<tr class=\"row$m\">
<td><font size=\"-2\">
$n) Posted $posted
<br>
Last response $last
</td>
<td valign=top>
<a href=\"$top_url\">$where</a> : $category->name :
<a href=\"forum_forum.php?id=$forum->id\">$forum->title</a> :
<a href=\"forum_thread.php?id=$thread->id\">$title</a>
<br>
<font size=\"-2\">$excerpt</font>
</td>
</tr>
";
}
// show a post with its context (e.g. for search results)
//
function show_post2($post, $n) {
$thread = getThread($post->thread);
$forum = getForum($thread->forum);
$category = getCategory($forum->category);
$where = $category->is_helpdesk?"Questions and answers":"Message boards";
$top_url = $category->is_helpdesk?"forum_help_desk.php":"forum_index.php";
$content = nl2br(stripslashes($post->content));
$when = time_diff_str($post->timestamp, time());
$user = lookup_user_id($post->user);
$title = cleanup_title($thread->title);
$m = $n%2;
if($post->hidden) {
$deleted_text = array( "Obscene", "Flame/Hate", "Commercial spam" ); //Todo: factor this array out, it is also used elsewhere
$deleted = "<br><font color=red>[Deleted " .
"by a moderator as " . $deleted_text[$post->hidden-1] .
"] </font>";
} else {
$deleted = "";
};
echo "
<tr class=row$m>
<td>
$n) <a href=\"$top_url\">$where</a> : $category->name :
<a href=\"forum_forum.php?id=$forum->id\">$forum->title</a> :
<a href=\"forum_thread.php?id=$thread->id\">$title</a>
<br>
Posted $when by $user->name $deleted
<hr>
$content
</td>
</tr>
";
}
function show_forum_summary($forum) {
$x = time_diff_str($forum->timestamp, time());
echo "
<tr class=row1>
<td>
<b>
<a href=forum_forum.php?id=$forum->id>", $forum->title,
"</a></b>
<br><font size=-2>", $forum->description, "
</td>
<td>", $forum->threads, "</td>
<td>", $forum->posts, "</td>
<td>", $x, "</td>
</tr>
";
}
function post_warning() {
return "<br><br><font size=-2>
Do not use obscene language
or threaten other participants;
we may delete such messages.</font>
";
}
?>