316 lines
12 KiB
PHP
316 lines
12 KiB
PHP
<?
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function discussion_moderate($moderate) {
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global $user, $comment_votes;
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if ($user->id && $moderate) {
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$none = $comment_votes[key($comment_votes)];
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foreach ($moderate as $id=>$vote) {
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if ($vote != $comment_votes[$none] && !user_getHistory($user->history, "c$id")) {
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### Update the comment's score:
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$result = db_query("UPDATE comments SET score = score $vote, votes = votes + 1 WHERE cid = $id");
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### Update the user's history:
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user_setHistory($user, "c$id", $vote);
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}
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}
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}
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}
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function discussion_kids($cid, $mode, $threshold, $level = 0, $dummy = 0) {
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global $user, $theme;
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$result = db_query("SELECT c.*, u.* FROM comments c LEFT JOIN users u ON c.author = u.id WHERE c.pid = $cid AND (c.votes = 0 OR c.score / c.votes >= $threshold) ORDER BY c.timestamp, c.cid");
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if ($mode == "nested") {
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while ($comment = db_fetch_object($result)) {
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if ($comment->score >= $threshold) {
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if ($level && !$comments) print "<UL>";
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$comments++;
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$link = "<A HREF=\"discussion.php?op=reply&sid=$comment->sid&pid=$comment->cid\"><FONT COLOR=\"$theme->hlcolor2\">reply to this comment</FONT></A>";
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$theme->comment(new Comment($comment->userid, $comment->subject, $comment->comment, $comment->timestamp, $comment->url, $comment->fake_email, discussion_score($comment), $comment->votes, $comment->cid), $link);
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discussion_kids($comment->cid, $mode, $threshold, $level + 1, $dummy + 1);
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}
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}
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}
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else { // mode == 'flat'
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while ($comment = db_fetch_object($result)) {
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if ($comment->score >= $threshold) {
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$link = "<A HREF=\"discussion.php?op=reply&sid=$comment->sid&pid=$comment->cid\"><FONT COLOR=\"$theme->hlcolor2\">reply to this comment</FONT></A>";
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$theme->comment(new Comment($comment->userid, $comment->subject, $comment->comment, $comment->timestamp, $comment->url, $comment->fake_email, discussion_score($comment), $comment->votes, $comment->cid), $link);
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}
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discussion_kids($comment->cid, $mode, $threshold);
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}
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}
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if ($level && $comments) print "</UL>";
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}
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function discussion_childs($cid, $threshold, $level = 0, $thread) {
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global $theme, $user;
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### Perform SQL query:
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$result = db_query("SELECT c.*, u.* FROM comments c LEFT JOIN users u ON c.author = u.id WHERE c.pid = $cid AND (c.votes = 0 OR c.score / c.votes >= $threshold) ORDER BY c.timestamp, c.cid");
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if ($level == 0) $thread = "";
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while ($comment = db_fetch_object($result)) {
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if ($level && !$comments) {
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$thread .= "<UL>";
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}
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$comments++;
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### Compose link:
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$thread .= "<LI><A HREF=\"discussion.php?id=$comment->sid&cid=$comment->cid&pid=$comment->pid#$comment->cid\">". check_output($comment->subject) ."</A> by ". format_username($comment->userid) ." <SMALL>(". discussion_score($comment) .")<SMALL></LI>";
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### Recursive:
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discussion_childs($comment->cid, $threshold, $level + 1, &$thread);
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}
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if ($level && $comments) {
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$thread .= "</UL>";
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}
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return $thread;
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}
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function discussion_settings($mode, $order, $threshold) {
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global $user;
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if ($user->id) {
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$data[mode] = $mode;
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$data[sort] = $order;
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$data[threshold] = $threshold;
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user_save($data, $user->id);
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}
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}
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function discussion_display($sid, $pid, $cid, $level = 0) {
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global $user, $theme;
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### Pre-process variables:
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$pid = (empty($pid)) ? 0 : $pid;
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$cid = (empty($cid)) ? 0 : $cid;
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$mode = ($user->id) ? $user->mode : "threaded";
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$order = ($user->id) ? $user->sort : "1";
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$threshold = ($user->id) ? $user->threshold : "0";
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### Compose story-query:
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$result = db_query("SELECT s.*, u.userid FROM stories s LEFT JOIN users u ON s.author = u.id WHERE s.status != 0 AND s.id = $sid");
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$story = db_fetch_object($result);
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### Display story:
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if ($story->status == 1) $theme->article($story, "[ <A HREF=\"submission.php\"><FONT COLOR=\"$theme->hlcolor2\">submission queue</FONT></A> | <A HREF=\"discussion.php?op=reply&sid=$story->id&pid=0\"><FONT COLOR=\"$theme->hlcolor2\">add a comment</FONT></A> ]");
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else $theme->article($story, "[ <A HREF=\"\"><FONT COLOR=\"$theme->hlcolor2\">home</FONT></A> | <A HREF=\"discussion.php?op=reply&sid=$story->id&pid=0\"><FONT COLOR=\"$theme->hlcolor2\">add a comment</FONT></A> ]");
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### Display `comment control'-box:
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if ($user->id) $theme->commentControl($sid, $title, $threshold, $mode, $order);
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### Compose query:
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$query .= "SELECT c.*, u.* FROM comments c LEFT JOIN users u ON c.author = u.id WHERE c.sid = $sid AND c.pid = $pid AND (c.votes = 0 OR c.score / c.votes >= $threshold)";
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if ($order == 1) $query .= " ORDER BY c.timestamp DESC";
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if ($order == 2) $query .= " ORDER BY c.score DESC";
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$result = db_query($query);
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print "<FORM METHOD=\"post\" ACTION=\"discussion.php\">\n";
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### Display the comments:
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while ($comment = db_fetch_object($result)) {
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### Dynamically compose the `reply'-link:
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if ($pid != 0) {
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list($pid) = db_fetch_row(db_query("SELECT pid FROM comments WHERE cid = $comment->pid"));
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$link = "<A HREF=\"discussion.php?id=$comment->sid&pid=$pid#$pid\"><FONT COLOR=\"$theme->hlcolor2\">return to parent</FONT></A> | <A HREF=\"discussion.php?op=reply&sid=$comment->sid&pid=$comment->cid\"><FONT COLOR=\"$theme->hlcolor2\">reply to this comment</FONT></A>";
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}
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else {
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$link = "<A HREF=\"discussion.php?op=reply&sid=$comment->sid&pid=$comment->cid\"><FONT COLOR=\"$theme->hlcolor2\">reply to this comment</FONT></A> ";
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}
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### Display the comments:
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if (empty($mode) || $mode == "threaded") {
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$thread = discussion_childs($comment->cid, $threshold);
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$theme->comment(new Comment($comment->userid, $comment->subject, $comment->comment, $comment->timestamp, $comment->url, $comment->fake_email, discussion_score($comment), $comment->votes, $comment->cid), $link, $thread);
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}
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else {
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$theme->comment(new Comment($comment->userid, $comment->subject, $comment->comment, $comment->timestamp, $comment->url, $comment->fake_email, discussion_score($comment), $comment->votes, $comment->cid), $link);
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discussion_kids($comment->cid, $mode, $threshold, $level);
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}
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}
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print " <INPUT TYPE=\"hidden\" NAME=\"id\" VALUE=\"$sid\">\n";
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print " <INPUT TYPE=\"submit\" NAME=\"op\" VALUE=\"Moderate comments\">\n";
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print "</FORM>\n";
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}
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function discussion_reply($pid, $sid) {
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global $user, $theme, $allowed_html;
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### Extract parent-information/data:
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if ($pid) {
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$item = db_fetch_object(db_query("SELECT comments.*, users.userid FROM comments LEFT JOIN users ON comments.author = users.id WHERE comments.cid = $pid"));
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$theme->comment(new Comment($item->userid, $item->subject, $item->comment, $item->timestamp, $item->url, $item->fake_email, discussion_score($comment), $comment->votes, $item->cid), "reply to this comment");
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}
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else {
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$item = db_fetch_object(db_query("SELECT stories.*, users.userid FROM stories LEFT JOIN users ON stories.author = users.id WHERE stories.status != 0 AND stories.id = $sid"));
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$theme->article($item, "");
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}
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### Build reply form:
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$output .= "<FORM ACTION=\"discussion.php\" METHOD=\"post\">\n";
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### Name field:
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$output .= "<P>\n";
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$output .= " <B>Your name:</B><BR>\n";
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$output .= format_username($user->userid);
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$output .= "</P>\n";
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### Subject field:
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$output .= "<P>\n";
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$output .= " <B>Subject:</B><BR>\n";
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$output .= " <INPUT TYPE=\"text\" NAME=\"subject\" SIZE=\"50\" MAXLENGTH=\"60\">\n";
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$output .= "</P>\n";
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### Comment field:
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$output .= "<P>\n";
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$output .= " <B>Comment:</B><BR>\n";
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$output .= " <TEXTAREA WRAP=\"virtual\" COLS=\"50\" ROWS=\"10\" NAME=\"comment\">". check_output(check_field($user->signature)) ."</TEXTAREA><BR>\n";
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$output .= " <SMALL><I>Allowed HTML tags: ". htmlspecialchars($allowed_html) .".</I></SMALL>\n";
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$output .= "</P>\n";
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### Hidden fields:
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$output .= "<INPUT TYPE=\"hidden\" NAME=\"pid\" VALUE=\"$pid\">\n";
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$output .= "<INPUT TYPE=\"hidden\" NAME=\"sid\" VALUE=\"$sid\">\n";
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### Preview button:
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$output .= "<INPUT TYPE=\"submit\" NAME=\"op\" VALUE=\"Preview comment\"> (You must preview at least once before you can submit.)\n";
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$output .= "</FORM>\n";
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$theme->box("Reply", $output);
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}
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function comment_preview($pid, $sid, $subject, $comment) {
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global $user, $theme, $allowed_html;
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### Preview comment:
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$theme->comment(new Comment($user->userid, $subject, $comment, time(), $user->url, $user->fake_email, "", "", ""), "reply to this comment");
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### Build reply form:
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$output .= "<FORM ACTION=\"discussion.php\" METHOD=\"post\">\n";
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### Name field:
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$output .= "<P>\n";
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$output .= " <B>Your name:</B><BR>\n";
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$output .= format_username($user->userid);
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$output .= "</P>\n";
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### Subject field:
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$output .= "<P>\n";
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$output .= " <B>Subject:</B><BR>\n";
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$output .= " <INPUT TYPE=\"text\" NAME=\"subject\" SIZE=\"50\" MAXLENGTH=\"60\" VALUE=\"". check_output(check_field($subject)) ."\">\n";
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$output .= "</P>\n";
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### Comment field:
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$output .= "<P>\n";
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$output .= " <B>Comment:</B><BR>\n";
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$output .= " <TEXTAREA WRAP=\"virtual\" COLS=\"50\" ROWS=\"10\" NAME=\"comment\">". check_output(check_field($comment)) ."</TEXTAREA><BR>\n";
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$output .= " <SMALL><I>Allowed HTML tags: ". htmlspecialchars($allowed_html) .".</I></SMALL>\n";
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$output .= "</P>\n";
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### Hidden fields:
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$output .= "<INPUT TYPE=\"hidden\" NAME=\"pid\" VALUE=\"$pid\">\n";
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$output .= "<INPUT TYPE=\"hidden\" NAME=\"sid\" VALUE=\"$sid\">\n";
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if (empty($subject)) {
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$output .= "<P>\n";
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$output .= " <FONT COLOR=\"red\"><B>Warning:</B></FONT> you did not supply a <U>subject</U>.\n";
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$outout .= "</P>\n";
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}
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### Preview and submit button:
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$output .= "<P>\n";
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$output .= " <INPUT TYPE=\"submit\" NAME=\"op\" VALUE=\"Preview comment\">\n";
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$output .= " <INPUT TYPE=\"submit\" NAME=\"op\" VALUE=\"Post comment\">\n";
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$output .= " </FORM>\n";
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$output .= "</P>\n";
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$theme->box("Reply", $output);
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}
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function comment_post($pid, $sid, $subject, $comment) {
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global $user, $theme;
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### Check for fake threads:
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$fake = db_result(db_query("SELECT COUNT(id) FROM stories WHERE id = $sid"), 0);
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### Check for duplicate comments:
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$duplicate = db_result(db_query("SELECT COUNT(cid) FROM comments WHERE pid = '$pid' AND sid = '$sid' AND subject = '". check_input($subject) ."' AND comment = '". check_input($comment) ."'"), 0);
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if ($fake != 1) {
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watchdog("error", "discussion: attempt to insert fake comment");
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$theme->box("fake comment", "fake comment: $fake");
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}
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elseif ($duplicate != 0) {
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watchdog("error", "discussion: attempt to insert duplicate comment");
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$theme->box("duplicate comment", "duplicate comment: $duplicate");
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}
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else {
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### Validate subject:
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$subject = ($subject) ? $subject : substr($comment, 0, 29);
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### Add watchdog entry:
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watchdog("comment", "discussion: added comment with subject '$subject'");
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### Add comment to database:
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db_query("INSERT INTO comments (pid, sid, author, subject, comment, hostname, timestamp) VALUES ($pid, $sid, '$user->id', '". check_input($subject) ."', '". check_input($comment) ."', '". getenv("REMOTE_ADDR") ."', '". time() ."')");
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### Compose header:
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header("Location: discussion.php?id=$sid");
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}
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}
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include "includes/common.inc";
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include "includes/comment.inc";
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### Security check:
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if (strstr($id, " ") || strstr($pid, " ") || strstr($sid, " ") || strstr($mode, " ") || strstr($order, " ") || strstr($threshold, " ")) {
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watchdog("error", "discussion: attempt to provide malicious input through URI");
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exit();
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}
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switch($op) {
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case "Preview comment":
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$theme->header();
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comment_preview($pid, $sid, $subject, $comment);
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$theme->footer();
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break;
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case "Post comment":
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comment_post($pid, $sid, $subject, $comment);
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break;
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case "reply":
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$theme->header();
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discussion_reply($pid, $sid);
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$theme->footer();
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break;
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case "Save":
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discussion_settings($mode, $order, $threshold);
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$theme->header();
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discussion_display($id, $pid, $sid);
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$theme->footer();
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break;
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case "Moderate comments":
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discussion_moderate($moderate);
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$theme->header();
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discussion_display($id, $pid, $sid);
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$theme->footer();
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break;
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default:
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$theme->header();
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discussion_display($id, $pid, $sid);
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$theme->footer();
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}
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?>
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