image locking

core/imageboard.pack.php

@@ -36,6 +36,7 @@ class Image {
 	var $owner_ip;
 	var $posted;
 	var $source;
+	var $locked;
 
 	/**
 	 * One will very rarely construct an image directly, more common
@@ -371,6 +372,19 @@ class Image {
 		$database->execute("UPDATE images SET source=? WHERE id=?", array($source, $this->id));
 	}
 
+
+	public function is_locked() {
+		return ($this->locked === true || $this->locked == "Y");
+	}
+	public function set_locked($tf) {
+		global $database;
+		$ln = $tf ? "Y" : "N";
+		$sln = $database->engine->scoreql_to_sql("SCORE_BOOL_$ln");
+		$sln = str_replace("'", "", $sln);
+		$sln = str_replace('"', "", $sln);
+		$database->execute("UPDATE images SET locked=? WHERE id=?", array($sln, $this->id));
+	}
+
 	/**
 	 * Delete all tags from this image.
 	 *

ext/tag_edit/main.php

@@ -38,6 +38,23 @@ class TagSetEvent extends Event {
 	}
 }
 
+/*
+ * LockSetEvent:
+ *   $image_id
+ *   $locked
+ *
+ */
+class LockSetEvent extends Event {
+	var $image;
+	var $locked;
+
+	public function LockSetEvent(Image $image, $locked) {
+		assert(is_bool($locked));
+		$this->image = $image;
+		$this->locked = $locked;
+	}
+}
+
 class TagEdit implements Extension {
 	var $theme;
 
@@ -58,23 +75,37 @@ class TagEdit implements Extension {
 		}
 
 		if($event instanceof ImageInfoSetEvent) {
-			if($this->can_tag()) {
+			if($this->can_tag($event->image)) {
 				send_event(new TagSetEvent($event->image, $_POST['tag_edit__tags']));
-				if($this->can_source()) {
+				if($this->can_source($event->image)) {
 					send_event(new SourceSetEvent($event->image, $_POST['tag_edit__source']));
 				}
 			}
 			else {
 				$this->theme->display_error($page, "Error", "Anonymous tag editing is disabled");
 			}
+			if($user->is_admin()) {
+				send_event(new LockSetEvent($event->image, $_POST['tag_edit__locked']=="on"));
+			}
 		}
 
 		if($event instanceof TagSetEvent) {
-			$event->image->set_tags($event->tags);
+			if($user->is_admin() || !$event->image->is_locked()) {
+				$event->image->set_tags($event->tags);
+			}
 		}
 
 		if($event instanceof SourceSetEvent) {
-			$event->image->set_source($event->source);
+			if($user->is_admin() || !$event->image->is_locked()) {
+				$event->image->set_source($event->source);
+			}
+		}
+
+		if($event instanceof LockSetEvent) {
+			if($user->is_admin()) {
+				log_debug("tag_edit", "Setting Image #{$event->image->id} lock to: {$event->locked}");
+				$event->image->set_locked($event->locked);
+			}
 		}
 
 		if($event instanceof ImageDeletionEvent) {
@@ -91,12 +122,15 @@ class TagEdit implements Extension {
 		}
 
 		if($event instanceof ImageInfoBoxBuildingEvent) {
-			if($config->get_bool("tag_edit_anon") || !$user->is_anonymous()) {
+			if($this->can_tag($event->image)) {
 				$event->add_part($this->theme->get_tag_editor_html($event->image), 40);
 			}
-			if($config->get_bool("source_edit_anon") || !$user->is_anonymous()) {
+			if($this->can_source($event->image)) {
 				$event->add_part($this->theme->get_source_editor_html($event->image), 41);
 			}
+			if($user->is_admin()) {
+				$event->add_part($this->theme->get_lock_editor_html($event->image), 42);
+			}
 		}
 
 		if($event instanceof SetupBuildingEvent) {
@@ -108,14 +142,20 @@ class TagEdit implements Extension {
 	}
 
 
-	private function can_tag() {
+	private function can_tag($image) {
 		global $config, $user;
-		return $config->get_bool("tag_edit_anon") || !$user->is_anonymous();
+		return (
+			($config->get_bool("tag_edit_anon") || !$user->is_anonymous()) &&
+			($user->is_admin() || !$image->is_locked())
+			);
 	}
 
-	private function can_source() {
+	private function can_source($image) {
 		global $config, $user;
-		return $config->get_bool("source_edit_anon") || !$user->is_anonymous();
+		return (
+			($config->get_bool("source_edit_anon") || !$user->is_anonymous()) &&
+			($user->is_admin() || !$image->is_locked())
+			);
 	}
 
 	private function mass_tag_edit($search, $replace) {

ext/tag_edit/theme.php

@@ -27,5 +27,10 @@ class TagEditTheme extends Themelet {
 		$h_source = html_escape($image->get_source());
 		return "<tr><td>Source</td><td><input type='text' name='tag_edit__source' value='$h_source'></td></tr>";
 	}
+
+	public function get_lock_editor_html(Image $image) {
+		$h_locked = $image->is_locked() ? " checked" : "";
+		return "<tr><td>Locked</td><td><input type='checkbox' name='tag_edit__locked'$h_locked></td></tr>";
+	}
 }
 ?>

ext/view/theme.php

@@ -101,7 +101,7 @@ class ViewImageTheme extends Themelet {
 	}
 
 	protected function build_image_editor(Image $image, $editor_parts) {
-		if(count($editor_parts) == 0) return "";
+		if(count($editor_parts) == 0) return ($image->is_locked() ? "<br>[Image Locked]" : "");
 
 		if(isset($_GET['search'])) {$h_query = "search=".url_escape($_GET['search']);}
 		else {$h_query = "";}