not-a-tag extension

contrib/not_a_tag/main.php

@@ -0,0 +1,47 @@
+<?php
+/*
+ * Name: Not A Tag
+ * Author: Shish <webmaster@shishnet.org>
+ * Link: http://code.shishnet.org/shimmie2/
+ * License: GPLv2
+ * Description: Redirect users to the rules if they use bad tags
+ */
+class NotATag extends Extension {
+	public function get_priority() {return 30;} // before ImageUploadEvent and tag_history
+
+	public function onImageAddition(ImageAdditionEvent $event) {
+		$this->scan($event->image->tags);
+	}
+
+	public function onTagSet(TagSetEvent $event) {
+		$this->scan($event->tags);
+	}
+
+	private function scan($tags) {
+		global $config;
+		$text = $config->get_string("not_a_tag_untags");
+		if(empty($text)) return;
+		$pairs = explode("\n", $text);
+		foreach($pairs as $pair) {
+			$tag_url = explode(",", $pair);
+			if(count($tag_url) != 2) continue;
+			$tag = $tag_url[0];
+			$url = $tag_url[1];
+			if(in_array($tag, $tags)) {
+				header("Location: $url");
+				exit; # FIXME: need a better way of aborting the tag-set or upload
+			}
+		}
+	}
+
+	public function onSetupBuilding(SetupBuildingEvent $event) {
+		$sb = new SetupBlock("Un-Tags");
+
+		$sb->add_label("List tag,url pairs");
+		$sb->add_longtext_option("not_a_tag_untags");
+		$sb->add_label("<br>(eg. 'deleteme,/wiki/reporting-images')");
+
+		$event->panel->add_block($sb);
+	}
+}
+?>