add multipaste support

Signed-off-by: Florian Pritz <bluewind@xinu.at>

22 files changed, 939 insertions, 301 deletions

diff --git a/application/config/migration.php b/application/config/migration.php
index d27107cd4..75e9bc19b 100644
--- a/application/config/migration.php
+++ b/application/config/migration.php
@@ -21,7 +21,7 @@ $config['migration_enabled'] = true;
 | be upgraded / downgraded to.
 |
 */
-$config['migration_version'] = 12;
+$config['migration_version'] = 13;
 
 
 /*
diff --git a/application/controllers/file.php b/application/controllers/file.php
index 51d6cf156..cbda8bea2 100644
--- a/application/controllers/file.php
+++ b/application/controllers/file.php
@@ -13,6 +13,7 @@ class File extends MY_Controller {
 		"upload_history",
 		"do_upload",
 		"do_delete",
+		"do_multipaste",
 	);
 
 	function __construct()
@@ -20,6 +21,7 @@ class File extends MY_Controller {
 		parent::__construct();
 
 		$this->load->model('mfile');
+		$this->load->model('mmultipaste');
 
 		if (is_cli_client()) {
 			$this->var->view_dir = "file_plaintext";
@@ -34,10 +36,13 @@ class File extends MY_Controller {
 			$this->load->library("../controllers/tools");
 			return $this->tools->index();
 		}
+
 		// Try to guess what the user would like to do.
 		$id = $this->uri->segment(1);
 		if (!empty($_FILES)) {
 			$this->do_upload();
+		} elseif (strpos($id, "m-") === 0 && $this->mmultipaste->id_exists($id)) {
+			$this->_download();
 		} elseif ($id != "file" && $this->mfile->id_exists($id)) {
 			$this->_download();
 		} elseif ($id && $id != "file") {
@@ -52,124 +57,151 @@ class File extends MY_Controller {
 		$id = $this->uri->segment(1);
 		$lexer = urldecode($this->uri->segment(2));
 
-		$filedata = $this->mfile->get_filedata($id);
-		$file = $this->mfile->file($filedata['hash']);
+		$is_multipaste = false;
+		if ($this->mmultipaste->id_exists($id)) {
+			$is_multipaste = true;
 
-		if (!$this->mfile->valid_id($id)) {
-			$this->_non_existent();
-			return;
-		}
+			if(!$this->mmultipaste->valid_id($id)) {
+				return $this->_non_existent();
+			}
+			$files = $this->mmultipaste->get_files($id);
+		} elseif ($this->mfile->id_exists($id)) {
+			if (!$this->mfile->valid_id($id)) {
+				return $this->_non_existent();
+			}
 
-		// don't allow unowned files to be downloaded
-		if ($filedata["user"] == 0) {
-			$this->_non_existent();
-			return;
+			$files = array($this->mfile->get_filedata($id));
+		} else {
+			assert(0);
 		}
 
-		// helps to keep traffic low when reloading
-		$etag = $filedata["hash"]."-".$filedata["date"];
+		assert($files !== false);
+		assert(is_array($files));
+		assert(count($files) >= 1);
 
-		// autodetect the lexer for highlighting if the URL contains a / after the ID (/ID/)
-		// /ID/lexer disables autodetection
-		$autodetect_lexer = !$lexer && substr_count(ltrim($this->uri->uri_string(), "/"), '/') >= 1;
+		// don't allow unowned files to be downloaded
+		foreach ($files as $filedata) {
+			if ($filedata["user"] == 0) {
+				return $this->_non_existent();
+			}
+		}
 
-		if ($autodetect_lexer) {
-			$lexer = $this->mfile->autodetect_lexer($filedata["mimetype"], $filedata["filename"]);
+		$etag = "";
+		foreach ($files as $filedata) {
+			$etag = sha1($etag.$filedata["hash"]);
 		}
 
-		// resolve aliases
-		// this is mainly used for compatibility
-		$lexer = $this->mfile->resolve_lexer_alias($lexer);
+		// handle some common "lexers" here
+		switch ($lexer) {
+		case "":
+			break;
 
-		// create the qr code for /ID/
-		if ($lexer == "qr") {
+		case "qr":
 			handle_etag($etag);
 			header("Content-disposition: inline; filename=\"".$id."_qr.png\"\n");
 			header("Content-Type: image/png\n");
 			passthru('qrencode -s 10 -o - '.escapeshellarg(site_url($id).'/'));
 			exit();
+
+		case "info":
+			return $this->_display_info($id);
+
+		default:
+			if ($is_multipaste) {
+				show_error("Invalid action \"".htmlspecialchars($lexer)."\"");
+			}
+			break;
 		}
 
 		$this->load->driver("ddownload");
 
 		// user wants the plain file
 		if ($lexer == 'plain') {
+			assert(count($files) == 1);
 			handle_etag($etag);
-			$this->ddownload->serveFile($file, $filedata["filename"], "text/plain");
-			exit();
-		}
 
-		if ($lexer == 'info') {
-			$this->_display_info($id);
-			return;
+			$filedata = $files[0];
+			$filepath = $this->mfile->file($filedata["hash"]);
+			$this->ddownload->serveFile($filepath, $filedata["filename"], "text/plain");
+			exit();
 		}
 
-		// if there is no mimetype mapping we can't highlight it
-		$can_highlight = $this->mfile->can_highlight($filedata["mimetype"]);
+		$this->load->library("output_cache");
 
-		$filesize_too_big = filesize($file) > $this->config->item('upload_max_text_size');
+		foreach ($files as $key => $filedata) {
+			$file = $this->mfile->file($filedata['hash']);
 
-		if (!$can_highlight || $filesize_too_big || !$lexer) {
-			// prevent javascript from being executed and forbid frames
-			// this should allow us to serve user submitted HTML content without huge security risks
-			foreach (array("X-WebKit-CSP", "X-Content-Security-Policy", "Content-Security-Policy") as $header_name) {
-				header("$header_name: default-src 'none'; img-src *; media-src *; font-src *; style-src 'unsafe-inline' *; script-src 'none'; object-src *; frame-src 'none'; ");
+			// autodetect the lexer for highlighting if the URL contains a / after the ID (/ID/)
+			// /ID/lexer disables autodetection
+			$autodetect_lexer = !$lexer && substr_count(ltrim($this->uri->uri_string(), "/"), '/') >= 1;
+			$autodetect_lexer = $is_multipaste ? true : $autodetect_lexer;
+			if ($autodetect_lexer) {
+				$lexer = $this->mfile->autodetect_lexer($filedata["mimetype"], $filedata["filename"]);
 			}
-			handle_etag($etag);
-			$this->ddownload->serveFile($file, $filedata["filename"], $filedata["mimetype"]);
-			exit();
-		}
-
-		$this->data['title'] = htmlspecialchars($filedata['filename']);
-		$this->data['id'] = $id;
 
-		header("Content-Type: text/html\n");
+			// resolve aliases
+			// this is mainly used for compatibility
+			$lexer = $this->mfile->resolve_lexer_alias($lexer);
 
-		$this->data['current_highlight'] = htmlspecialchars($lexer);
-		$this->data['timeout'] = $this->mfile->get_timeout_string($id);
-		$this->data['lexers'] = $this->mfile->get_lexers();
-		$this->data['filedata'] = $filedata;
-
-		// highlight the file and cache the result
-		$highlit = cache_function($filedata['hash'].'_'.$lexer, 100, function() use ($file, $lexer){
-			$CI =& get_instance();
-			$ret = array();
-			if ($lexer == "rmd") {
-				ob_start();
+			// if there is no mimetype mapping we can't highlight it
+			$can_highlight = $this->mfile->can_highlight($filedata["mimetype"]);
 
-				echo '<div class="code content table markdownrender">'."\n";
-				echo '<div class="table-row">'."\n";
-				echo '<div class="table-cell">'."\n";
-				passthru('perl '.FCPATH.'scripts/Markdown.pl '.escapeshellarg($file), $ret["return_value"]);
-				echo '</div></div></div>';
+			$filesize_too_big = filesize($file) > $this->config->item('upload_max_text_size');
 
-				$ret["output"] = ob_get_clean();
-			} else {
-				$ret = $CI->_colorify($file, $lexer);
-			}
-
-			if ($ret["return_value"] != 0) {
-				$tmp = $CI->_colorify($file, "text");
-				$ret["output"] = $tmp["output"];
+			if (!$can_highlight || $filesize_too_big || !$lexer) {
+				if (!$is_multipaste) {
+					// prevent javascript from being executed and forbid frames
+					// this should allow us to serve user submitted HTML content without huge security risks
+					foreach (array("X-WebKit-CSP", "X-Content-Security-Policy", "Content-Security-Policy") as $header_name) {
+						header("$header_name: default-src 'none'; img-src *; media-src *; font-src *; style-src 'unsafe-inline' *; script-src 'none'; object-src *; frame-src 'none'; ");
+					}
+					handle_etag($etag);
+					$this->ddownload->serveFile($file, $filedata["filename"], $filedata["mimetype"]);
+					exit();
+				} else {
+					switch ($filedata["mimetype"]) {
+						// TODO: handle video/audio
+						// TODO: handle more image formats (thumbnails needs to be improved)
+					case "image/jpeg":
+					case "image/png":
+					case "image/gif":
+						$filedata["tooltip"] = $this->_tooltip_for_image($filedata);
+						$this->output_cache->add_merge(
+							array("items" => array($filedata)),
+							'file/fragments/thumbnail'
+						);
+
+						break;
+
+					default:
+						$this->output_cache->add_merge(
+							array("items" => array($filedata)),
+							'file/fragments/uploads_table'
+						);
+						break;
+					}
+					continue;
+				}
 			}
-			return $ret;
-		});
 
-		if ($highlit["return_value"] != 0) {
-			$this->data["error_message"] = "<p>Error trying to process the file.
-				Either the lexer is unknown or something is broken.
-				Falling back to plain text.</p>";
+			$this->output_cache->add_function(function() use ($filedata, $lexer, $is_multipaste) {
+				$this->_highlight_file($filedata, $lexer, $is_multipaste);
+			});
 		}
 
-		// Don't use append_output because the output class does too
+		// TODO: move lexers json to dedicated URL
+		$this->data['lexers'] = $this->mfile->get_lexers();
+
+		// Output everything
+		// Don't use the output class/append_output because it does too
 		// much magic ({elapsed_time} and {memory_usage}).
 		// Direct echo puts us on the safe side.
 		echo $this->load->view($this->var->view_dir.'/html_header', $this->data, true);
-		echo $highlit["output"];
+		$this->output_cache->render();
 		echo $this->load->view($this->var->view_dir.'/html_footer', $this->data, true);
 	}
 
-	private function _colorify($file, $lexer)
+	private function _colorify($file, $lexer, $anchor_id = false)
 	{
 		$return_value = 0;
 		$output = "";
@@ -205,10 +237,15 @@ class File extends MY_Controller {
 				$line = str_replace("<div class=\"highlight\"><pre>", "", $line);
 			}
 
+			$anchor = "n$line_number";
+			if ($anchor_id !== false) {
+				$anchor = "n-$anchor_id-$line_number";
+			}
+
 			// Be careful not to add superflous whitespace here (we are in a <pre>)
 			$output .= "<div class=\"table-row\">"
-							."<a href=\"#n$line_number\" class=\"linenumber table-cell\">"
-								."<span class=\"anchor\" id=\"n$line_number\"> </span>"
+							."<a href=\"#$anchor\" class=\"linenumber table-cell\">"
+								."<span class=\"anchor\" id=\"$anchor\"> </span>"
 							."</a>"
 							."<span class=\"line table-cell\">".$line."</span>\n";
 			$output .= "</div>";
@@ -223,16 +260,111 @@ class File extends MY_Controller {
 		);
 	}
 
-	function _display_info($id)
+	private function _highlight_file($filedata, $lexer, $is_multipaste)
 	{
-		$this->data["title"] .= " - Info $id";
-		$this->data["filedata"] = $this->mfile->get_filedata($id);
-		$this->data["id"] = $id;
-		$this->data['timeout'] = $this->mfile->get_timeout_string($id);
+		// highlight the file and cache the result, fall back to plain text if $lexer fails
+		foreach (array($lexer, "text") as $lexer) {
+			$highlit = cache_function($filedata['hash'].'_'.$lexer, 100,
+									  function() use ($filedata, $lexer, $is_multipaste) {
+				$file = $this->mfile->file($filedata['hash']);
+				if ($lexer == "rmd") {
+					ob_start();
+
+					echo '<div class="code content table markdownrender">'."\n";
+					echo '<div class="table-row">'."\n";
+					echo '<div class="table-cell">'."\n";
+					passthru('perl '.FCPATH.'scripts/Markdown.pl '.escapeshellarg($file), $return_value);
+					echo '</div></div></div>';
+
+					return array(
+						"output" => ob_get_clean(),
+						"return_value" => $return_value,
+					);
+				} else {
+					return get_instance()->_colorify($file, $lexer, $is_multipaste ? $filedata["id"] : false);
+				}
+			});
 
-		$this->load->view('header', $this->data);
-		$this->load->view($this->var->view_dir.'/file_info', $this->data);
-		$this->load->view('footer', $this->data);
+			if ($highlit["return_value"] == 0) {
+				break;
+			} else {
+				$message = "Error trying to process the file. Either the lexer is unknown or something is broken.";
+				if ($lexer != "text") {
+					$message .= " Falling back to plain text.";
+				}
+				$this->output_cache->render_now(
+					array("error_message" => "<p>$message</p>"),
+					"file/fragments/alert-wide"
+				);
+			}
+		}
+
+		$data = array_merge($this->data, array(
+			'title' => htmlspecialchars($filedata['filename']),
+			'id' => $filedata["id"],
+			'current_highlight' => htmlspecialchars($lexer),
+			'timeout' => $this->mfile->get_timeout_string($filedata["id"]),
+			'filedata' => $filedata,
+		));
+
+		$this->output_cache->render_now($data, $this->var->view_dir.'/html_paste_header');
+		$this->output_cache->render_now($highlit["output"]);
+		$this->output_cache->render_now($data, $this->var->view_dir.'/html_paste_footer');
+	}
+
+	private function _tooltip_for_image($filedata)
+	{
+		$filesize = format_bytes($filedata["filesize"]);
+		$dimensions = $this->mfile->image_dimension($this->mfile->file($filedata["hash"]));
+		$upload_date = date("r", $filedata["date"]);
+
+		$tooltip  = "${filedata["id"]} - $filesize<br>";
+		$tooltip .= "$upload_date<br>";
+		$tooltip .= "$dimensions - ${filedata["mimetype"]}<br>";
+
+		return $tooltip;
+	}
+
+	private function _display_info($id)
+	{
+		if ($this->mmultipaste->id_exists($id)) {
+			$files = $this->mmultipaste->get_files($id);
+
+			$this->data["title"] .= " - Info $id";
+
+			$multipaste = $this->mmultipaste->get_multipaste($id);
+			$total_size = 0;
+			$timeout = -1;
+			foreach($files as $filedata) {
+				$total_size += $filedata["filesize"];
+				$file_timeout = $this->mfile->get_timeout($filedata["id"]);
+				if ($timeout == -1 || ($timeout > $file_timeout && $file_timeout >= 0)) {
+					$timeout = $file_timeout;
+				}
+			}
+
+			$data = array_merge($this->data, array(
+				'timeout_string' => $timeout >= 0 ? date("r", $timeout) : "Never",
+				'upload_date' => $multipaste["date"],
+				'id' => $id,
+				'size' => $total_size,
+				'file_count' => count($files),
+			));
+
+			$this->load->view('header', $this->data);
+			$this->load->view($this->var->view_dir.'/multipaste_info', $data);
+			$this->load->view('footer', $this->data);
+			return;
+		} elseif ($this->mfile->id_exists($id)) {
+			$this->data["title"] .= " - Info $id";
+			$this->data["filedata"] = $this->mfile->get_filedata($id);
+			$this->data["id"] = $id;
+			$this->data['timeout'] = $this->mfile->get_timeout_string($id);
+
+			$this->load->view('header', $this->data);
+			$this->load->view($this->var->view_dir.'/file_info', $this->data);
+			$this->load->view('footer', $this->data);
+		}
 	}
 
 	function _non_existent()
@@ -416,20 +548,10 @@ class File extends MY_Controller {
 				unset($query[$key]);
 				continue;
 			}
-
-			$filesize = format_bytes($item["filesize"]);
-			$dimensions = $this->mfile->image_dimension($this->mfile->file($item["hash"]));
-			$upload_date = date("r", $item["date"]);
-
-			$query[$key]["filesize"] = $filesize;
-			$query[$key]["tooltip"] = "
-				${item["id"]} - $filesize<br>
-				$upload_date
-				$dimensions - ${item["mimetype"]}<br>
-				";
+			$query[$key]["tooltip"] = $this->_tooltip_for_image($item);
 		}
 
-		$this->data["query"] = $query;
+		$this->data["items"] = $query;
 
 		$this->load->view('header', $this->data);
 		$this->load->view($this->var->view_dir.'/upload_history_thumbnails', $this->data);
@@ -462,23 +584,40 @@ class File extends MY_Controller {
 
 		$order = is_cli_client() ? "ASC" : "DESC";
 
-		$query = $this->db->query("
+		$items = $this->db->query("
 			SELECT ".implode(",", array_keys($fields))."
 			FROM files
 			WHERE user = ?
-			ORDER BY date $order
 			", array($user))->result_array();
 
+		$query = $this->db->query("
+			SELECT m.url_id id, sum(f.filesize) filesize, m.date, '' hash, '' mimetype, concat(count(*), ' file(s)') filename
+			FROM multipaste m
+			JOIN multipaste_file_map mfm ON m.multipaste_id = mfm.multipaste_id
+			JOIN files f ON f.id = mfm.file_url_id
+			WHERE m.user_id = ?
+			GROUP BY m.url_id
+			", array($user))->result_array();
+
+		$items = array_merge($items, $query);
+		uasort($items, function($a, $b) use ($order) {
+			if ($order == "ASC") {
+				return $a["date"] - $b["date"];
+			} else {
+				return $b["date"] - $a["date"];
+			}
+		});
+
 		if (static_storage("response_type") == "json") {
-			return send_json_reply($query);
+			return send_json_reply($items);
 		}
 
-		foreach($query as $key => $item) {
-			$query[$key]["filesize"] = format_bytes($item["filesize"]);
+		foreach($items as $key => $item) {
+			$items[$key]["filesize"] = format_bytes($item["filesize"]);
 			if (is_cli_client()) {
 				// Keep track of longest string to pad plaintext output correctly
 				foreach($fields as $length_key => $value) {
-					$len = mb_strlen($query[$key][$length_key]);
+					$len = mb_strlen($items[$key][$length_key]);
 					if ($len > $lengths[$length_key]) {
 						$lengths[$length_key] = $len;
 					}
@@ -496,7 +635,7 @@ class File extends MY_Controller {
 			) sub
 			", array($user))->row_array();
 
-		$this->data["query"] = $query;
+		$this->data["items"] = $items;
 		$this->data["lengths"] = $lengths;
 		$this->data["fields"] = $fields;
 		$this->data["total_size"] = format_bytes($total_size["sum"]);
@@ -511,6 +650,7 @@ class File extends MY_Controller {
 		$this->muser->require_access("apikey");
 
 		$ids = $this->input->post("ids");
+		$userid = $this->muser->get_userid();
 		$errors = array();
 		$deleted = array();
 		$deleted_count = 0;
@@ -522,24 +662,38 @@ class File extends MY_Controller {
 
 		foreach ($ids as $id) {
 			$total_count++;
+			$next = false;
+
+			foreach (array($this->mfile, $this->mmultipaste) as $model) {
+				if ($model->id_exists($id)) {
+					if ($model->get_owner($id) !== $userid) {
+						$errors[] = array(
+							"id" => $id,
+							"reason" => "wrong owner",
+						);
+						continue;
+					}
+					if ($model->delete_id($id)) {
+						$deleted[] = $id;
+						$deleted_count++;
+						$next = true;
+					} else {
+						$errors[] = array(
+							"id" => $id,
+							"reason" => "unknown error",
+						);
+					}
+				}
+			}
 
-			if (!$this->mfile->id_exists($id)) {
-				$errors[] = array(
-					"id" => $id,
-					"reason" => "doesn't exist",
-				);
+			if ($next) {
 				continue;
 			}
 
-			if ($this->mfile->delete_id($id)) {
-				$deleted[] = $id;
-				$deleted_count++;
-			} else {
-				$errors[] = array(
-					"id" => $id,
-					"reason" => "unknown error",
-				);
-			}
+			$errors[] = array(
+				"id" => $id,
+				"reason" => "doesn't exist",
+			);
 		}
 
 		if (static_storage("response_type") == "json") {
@@ -560,6 +714,62 @@ class File extends MY_Controller {
 		$this->load->view('footer', $this->data);
 	}
 
+	function do_multipaste()
+	{
+		$this->muser->require_access("apikey");
+
+		$ids = $this->input->post("ids");
+		$errors = array();
+
+		if (!$ids || !is_array($ids)) {
+			show_error("No IDs specified");
+		}
+
+		if (count(array_unique($ids)) != count($ids)) {
+			show_error("Duplicate IDs are not supported");
+		}
+
+		foreach ($ids as $id) {
+			if (!$this->mfile->id_exists($id)) {
+				$errors[] = array(
+					"id" => $id,
+					"reason" => "doesn't exist",
+				);
+			}
+
+			$filedata = $this->mfile->get_filedata($id);
+			if ($filedata["user"] != $this->muser->get_userid()) {
+				$errors[] = array(
+					"id" => $id,
+					"reason" => "not owned by you",
+				);
+			}
+		}
+
+		if (!empty($errors)) {
+			$errorstring = "";
+			foreach ($errors as $error) {
+				$errorstring .= $error["id"]." ".$error["reason"]."<br>\n";
+			}
+			show_error($errorstring);
+		}
+
+		$limits = $this->muser->get_upload_id_limits();
+		$url_id = $this->mmultipaste->new_id($limits[0], $limits[1]);
+
+		$multipaste_id = $this->mmultipaste->get_multipaste_id($url_id);
+		assert($multipaste_id !== false);
+
+		foreach ($ids as $id) {
+			$this->db->insert("multipaste_file_map", array(
+				"file_url_id" => $id,
+				"multipaste_id" => $multipaste_id,
+			));
+		}
+
+		return $this->_show_url(array($url_id), false);
+	}
+
 	function delete()
 	{
 		$this->muser->require_access("apikey");
@@ -570,19 +780,29 @@ class File extends MY_Controller {
 
 		$id = $this->uri->segment(3);
 		$this->data["id"] = $id;
+		$userid = $this->muser->get_userid();
 
-		if ($id && !$this->mfile->id_exists($id)) {
-			show_error("Unknown ID '$id'.", 404);
+		foreach (array($this->mfile, $this->mmultipaste) as $model) {
+			if ($model->id_exists($id)) {
+				if ($model->get_owner($id) !== $userid) {
+					echo "You don't own this file\n";
+					return;
+				}
+				if ($model->delete_id($id)) {
+					echo "$id has been deleted.\n";
+				} else {
+					echo "Deletion failed. Unknown error\n";
+				}
+				return;
+			}
 		}
 
-		if ($this->mfile->delete_id($id)) {
-			echo "$id has been deleted.\n";
-		} else {
-			echo "Deletion failed. Do you really own that file?\n";
-		}
+		show_error("Unknown ID '$id'.", 404);
 	}
 
 	// Handle pastes
+	// TODO: merge with do_upload and also merge the forms
+	// TODO: add support for multiple textareas (+ view)
 	function do_paste()
 	{
 		// stateful clients get a cookie to claim the ID later
@@ -628,6 +848,7 @@ class File extends MY_Controller {
 		$ids = array();
 
 		$extension = $this->input->post('extension');
+		$multipaste = $this->input->post('multipaste');
 
 		$files = getNormalizedFILES();
 
@@ -697,6 +918,21 @@ class File extends MY_Controller {
 			$ids[] = $id;
 		}
 
+		if ($multipaste !== false) {
+			$multipaste_url_id = $this->mmultipaste->new_id($limits[0], $limits[1]);
+
+			$multipaste_id = $this->mmultipaste->get_multipaste_id($multipaste_url_id);
+			assert($multipaste_id !== false);
+
+			foreach ($ids as $id) {
+				$this->db->insert("multipaste_file_map", array(
+					"file_url_id" => $id,
+					"multipaste_id" => $multipaste_id,
+				));
+			}
+			$ids[] = $multipaste_url_id;
+		}
+
 		$this->_show_url($ids, $extension);
 	}
 
@@ -774,16 +1010,16 @@ class File extends MY_Controller {
 		foreach($query->result_array() as $row) {
 			$file = $this->mfile->file($row['hash']);
 			if (!file_exists($file)) {
-				$this->db->query('DELETE FROM files WHERE id = ? LIMIT 1', array($row['id']));
+				$this->mfile->delete_id($row["id"]);
 				continue;
 			}
 
 			if ($row["user"] == 0 || filesize($file) > $small_upload_size) {
 				if (filemtime($file) < $oldest_time) {
 					unlink($file);
-					$this->db->query('DELETE FROM files WHERE hash = ?', array($row['hash']));
+					$this->mfile->delete_hash($row["hash"]);
 				} else {
-					$this->db->query('DELETE FROM files WHERE id = ? LIMIT 1', array($row['id']));
+					$this->mfile->delete_id($row["id"]);
 					if ($this->mfile->stale_hash($row["hash"])) {
 						unlink($file);
 					}
@@ -838,7 +1074,6 @@ class File extends MY_Controller {
 
 		$id = $this->uri->segment(3);
 
-
 		$file_data = $this->mfile->get_filedata($id);
 
 		if (empty($file_data)) {
@@ -847,14 +1082,7 @@ class File extends MY_Controller {
 		}
 
 		$hash = $file_data["hash"];
-
-		$this->db->query("
-			DELETE FROM files
-			WHERE hash = ?
-			", array($hash));
-
-		unlink($this->mfile->file($hash));
-
+		$this->mfile->delete_hash($hash);
 		echo "removed hash \"$hash\"\n";
 	}
 
diff --git a/application/libraries/Output_cache.php b/application/libraries/Output_cache.php
new file mode 100644
index 000000000..224e9f95a
--- /dev/null
+++ b/application/libraries/Output_cache.php
@@ -0,0 +1,80 @@
+<?php
+/*
+ * Copyright 2014 Florian "Bluewind" Pritz <bluewind@server-speed.net>
+ *
+ * Licensed under AGPLv3
+ * (see COPYING for full license text)
+ *
+ */
+
+class Output_cache {
+	private $output_cache = array();
+
+	/**
+	 * Combine multiple objects for the same view into one
+	 * @param data data to pass to the view
+	 * @param view view path
+	 */
+	public function add_merge($data, $view)
+	{
+		assert($view !== NULL);
+
+		// combine multiple objects for the same view into one
+		$count = count($this->output_cache);
+		if ($count > 0 && $this->output_cache[$count - 1]["view"] === $view) {
+			$this->output_cache[$count - 1]["data"] = array_merge_recursive($this->output_cache[$count - 1]["data"], $data);
+		} else {
+			$this->add($data, $view);
+		}
+	}
+
+	/**
+	 * Add some data that will be output directly if view is NULL or passed
+	 * to the view otherweise.
+	 *
+	 * @param data data to pass to view or output
+	 * @param view view path or NULL
+	 */
+	public function add($data, $view = NULL)
+	{
+		$this->output_cache[] = array(
+			"view" => $view,
+			"data" => $data,
+		);
+	}
+
+	/**
+	 * Add a function that will be excuted when render() is called.
+	 * This function is supposed to use render_now() to output data.
+	 *
+	 * @param data_function
+	 */
+	public function add_function($data_function)
+	{
+		$this->output_cache[] = array(
+			"view" => NULL,
+			"data_function" => $data_function,
+		);
+	}
+
+	public function render_now($data, $view = NULL)
+	{
+		if ($view !== NULL) {
+			echo get_instance()->load->view($view, $data, true);
+		} else {
+			echo $data;
+		}
+	}
+
+	public function render()
+	{
+		while ($output = array_shift($this->output_cache)) {
+			if (isset($output["data_function"])) {
+				$output["data_function"]();
+			} else {
+				$data = $output["data"];
+				$this->render_now($data, $output["view"]);
+			}
+		}
+	}
+}
diff --git a/application/migrations/013_add_multipaste.php b/application/migrations/013_add_multipaste.php
new file mode 100644
index 000000000..edb4a0748
--- /dev/null
+++ b/application/migrations/013_add_multipaste.php
@@ -0,0 +1,36 @@
+<?php
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+class Migration_add_multipaste extends CI_Migration {
+
+	public function up()
+	{
+		$this->db->query('
+		CREATE TABLE `multipaste` (
+		  `url_id` varchar(255) NOT NULL,
+		  `multipaste_id` int(11) NOT NULL AUTO_INCREMENT,
+		  `user_id` int(11) NOT NULL,
+		  `date` int(11) NOT NULL,
+		  PRIMARY KEY (`url_id`),
+		  UNIQUE KEY `multipaste_id` (`multipaste_id`),
+		  KEY `user_id` (`user_id`)
+		) ENGINE=InnoDB  DEFAULT CHARSET=utf8;');
+
+		$this->db->query('
+		CREATE TABLE `multipaste_file_map` (
+		  `multipaste_id` int(11) NOT NULL,
+		  `file_url_id` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
+		  `sort_order` int(10) unsigned NOT NULL AUTO_INCREMENT,
+		  PRIMARY KEY (`sort_order`),
+		  UNIQUE KEY `multipaste_id` (`multipaste_id`,`file_url_id`),
+		  KEY `multipaste_file_map_ibfk_2` (`file_url_id`),
+		  CONSTRAINT `multipaste_file_map_ibfk_1` FOREIGN KEY (`multipaste_id`) REFERENCES `multipaste` (`multipaste_id`) ON DELETE CASCADE ON UPDATE CASCADE,
+		  CONSTRAINT `multipaste_file_map_ibfk_2` FOREIGN KEY (`file_url_id`) REFERENCES `files` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
+		) ENGINE=InnoDB  DEFAULT CHARSET=utf8 ;');
+	}
+
+	public function down()
+	{
+		show_error("downgrade not supported");
+	}
+}
diff --git a/application/models/mfile.php b/application/models/mfile.php
index c900b297c..427c74a18 100644
--- a/application/models/mfile.php
+++ b/application/models/mfile.php
@@ -71,15 +71,14 @@ class Mfile extends CI_Model {
 	function get_filedata($id)
 	{
 		$sql = '
-			SELECT hash, filename, mimetype, date, user, filesize
+			SELECT id, hash, filename, mimetype, date, user, filesize
 			FROM `files`
 			WHERE `id` = ?
 			LIMIT 1';
 		$query = $this->db->query($sql, array($id));
 
-		if ($query->num_rows() == 1) {
-			$return = $query->result_array();
-			return $return[0];
+		if ($query->num_rows() > 0) {
+			return $query->row_array();
 		} else {
 			return false;
 		}
@@ -214,10 +213,15 @@ class Mfile extends CI_Model {
 		$mimetype = $this->mimetype($this->file($hash));
 
 		$filesize = filesize($this->file($hash));
-		$query = $this->db->query('
-			INSERT INTO `files` (`hash`, `id`, `filename`, `user`, `date`, `mimetype`, `filesize`)
-			VALUES (?, ?, ?, ?, ?, ?, ?)',
-			array($hash, $id, $filename, $userid, time(), $mimetype, $filesize));
+		$this->db->insert("files", array(
+			"id" => $id,
+			"hash" => $hash,
+			"filename" => $filename,
+			"date" => time(),
+			"user" => $userid,
+			"mimetype" => $mimetype,
+			"filesize" => $filesize,
+		));
 	}
 
 	function adopt($id)
@@ -241,9 +245,7 @@ class Mfile extends CI_Model {
 		$file = $this->file($filedata['hash']);
 
 		if (!file_exists($file)) {
-			if (isset($filedata["hash"])) {
-				$this->db->query('DELETE FROM files WHERE hash = ?', array($filedata['hash']));
-			}
+			$this->delete_hash($filedata["hash"]);
 			return false;
 		}
 
@@ -262,10 +264,9 @@ class Mfile extends CI_Model {
 			// if the file has been uploaded multiple times the mtime is the time
 			// of the last upload
 			if (filemtime($file) < $remove_before) {
-				unlink($file);
-				$this->db->query('DELETE FROM files WHERE hash = ?', array($filedata['hash']));
+				$this->delete_hash($filedata["hash"]);
 			} else {
-				$this->db->query('DELETE FROM files WHERE id = ? LIMIT 1', array($id));
+				$this->delete_id($id);
 			}
 			return false;
 		}
@@ -273,13 +274,28 @@ class Mfile extends CI_Model {
 		return true;
 	}
 
-	function get_timeout_string($id)
+	public function get_timeout($id)
 	{
 		$filedata = $this->get_filedata($id);
 		$file = $this->file($filedata["hash"]);
 
+		if ($this->config->item("upload_max_age") == 0) {
+			return -1;
+		}
+
 		if (filesize($file) > $this->config->item("small_upload_size")) {
-			return date("r", $filedata["date"] + $this->config->item("upload_max_age"));
+			return $filedata["date"] + $this->config->item("upload_max_age");
+		} else {
+			return -1;
+		}
+	}
+
+	public function get_timeout_string($id)
+	{
+		$timeout = $this->get_timeout($id);
+
+		if ($timeout >= 0) {
+			return date("r", $timeout);
 		} else {
 			return "unknown";
 		}
@@ -301,34 +317,72 @@ class Mfile extends CI_Model {
 		}
 	}
 
-	function delete_id($id)
+	public function delete_id($id)
 	{
 		$filedata = $this->get_filedata($id);
-		$userid = $this->muser->get_userid();
 
-		if (!$this->id_exists($id)) {
-			return false;
-		}
-
-		$sql = '
-			DELETE
-			FROM `files`
-			WHERE `id` = ?
-			AND user = ?
-			LIMIT 1';
-		$this->db->query($sql, array($id, $userid));
+		// Delete the file and all multipastes using it
+		// Note that this does not delete all relations in multipaste_file_map
+		// which is actually done by a SQL contraint.
+		// TODO: make it work properly without the constraint
+		$this->db->query('
+			DELETE m, mfm, f
+			FROM files f
+			LEFT JOIN multipaste_file_map mfm ON f.id = mfm.file_url_id
+			LEFT JOIN multipaste m ON mfm.multipaste_id = m.multipaste_id
+			WHERE f.id = ?
+			', array($id));
 
 		if ($this->id_exists($id))  {
 			return false;
 		}
 
-		if ($this->unused_file($filedata['hash'])) {
-			unlink($this->file($filedata['hash']));
-			@rmdir($this->folder($filedata['hash']));
+		if ($filedata !== false) {
+			assert(isset($filedata["hash"]));
+			if ($this->unused_file($filedata['hash'])) {
+				unlink($this->file($filedata['hash']));
+				$dir = $this->folder($filedata['hash']);
+				if (count(scandir($dir)) == 2) {
+					rmdir($dir);
+				}
+			}
 		}
 		return true;
 	}
 
+	public function delete_hash($hash)
+	{
+		// Delete all files with this hash and all multipastes using any of those files
+		// Note that this does not delete all relations in multipaste_file_map
+		// which is actually done by a SQL contraint.
+		// TODO: make it work properly without the constraint
+		$this->db->query('
+			DELETE m, mfm, f
+			FROM files f
+			LEFT JOIN multipaste_file_map mfm ON f.id = mfm.file_url_id
+			LEFT JOIN multipaste m ON mfm.multipaste_id = m.multipaste_id
+			WHERE f.hash = ?
+			', array($hash));
+
+		if (file_exists($this->file($hash))) {
+			unlink($this->file($hash));
+			$dir = $this->folder($hash);
+			if (count(scandir($dir)) == 2) {
+				rmdir($dir);
+			}
+		}
+		return true;
+	}
+
+	public function get_owner($id)
+	{
+		return $this->db->query("
+			SELECT user
+			FROM files
+			WHERE id = ?
+			", array($id))->row_array()["user"];
+	}
+
 	public function get_lexers() {
 		return cache_function('lexers', 1800, function() {
 			$lexers = array();
diff --git a/application/models/mmultipaste.php b/application/models/mmultipaste.php
new file mode 100644
index 000000000..723132a50
--- /dev/null
+++ b/application/models/mmultipaste.php
@@ -0,0 +1,160 @@
+<?php
+/*
+ * Copyright 2014 Florian "Bluewind" Pritz <bluewind@server-speed.net>
+ *
+ * Licensed under AGPLv3
+ * (see COPYING for full license text)
+ *
+ */
+
+class Mmultipaste extends CI_Model {
+
+	function __construct()
+	{
+		parent::__construct();
+		$this->load->model("muser");
+		$this->load->model("mfile");
+	}
+
+	/**
+	 * Returns an unused ID
+	 *
+	 * @param min minimal length of the resulting ID
+	 * @param max maximum length of the resulting ID
+	 */
+	public function new_id($min = 3, $max = 6)
+	{
+		static $id_blacklist = NULL;
+
+		if ($id_blacklist == NULL) {
+			// This prevents people from being unable to access their uploads
+			// because of URL rewriting
+			$id_blacklist = scandir(FCPATH);
+			$id_blacklist[] = "file";
+			$id_blacklist[] = "user";
+		}
+
+		$max_tries = 100;
+
+		for ($try = 0; $try < $max_tries; $try++) {
+			$id = "m-".random_alphanum($min, $max);
+
+			// TODO: try to insert the id into file_groups instead of checking with
+			// id_exists (prevents race conditio)
+			if ($this->id_exists($id) || in_array($id, $id_blacklist)) {
+				continue;
+			}
+
+			$this->db->insert("multipaste", array(
+				"url_id" => $id,
+				"user_id" => $this->muser->get_userid(),
+				"date" => time(),
+			));
+
+			return $id;
+		}
+
+		show_error("Failed to find unused ID after $max_tries tries.");
+	}
+
+	public function id_exists($id)
+	{
+		if (!$id) {
+			return false;
+		}
+
+		$sql = '
+			SELECT multipaste.url_id
+			FROM multipaste
+			WHERE multipaste.url_id = ?
+			LIMIT 1';
+		$query = $this->db->query($sql, array($id));
+
+		if ($query->num_rows() == 1) {
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+	public function valid_id($id)
+	{
+		$files = $this->get_files($id);
+		foreach ($files as $file) {
+			if (!$this->mfile->valid_id($file["id"])) {
+				return false;
+			}
+		}
+		return true;
+	}
+
+	public function delete_id($id)
+	{
+		$this->db->query('
+			DELETE m, mfm
+			FROM multipaste m
+			LEFT JOIN multipaste_file_map mfm ON mfm.multipaste_id = m.multipaste_id
+			WHERE m.url_id = ?
+			', array($id));
+
+		if ($this->id_exists($id))  {
+			return false;
+		}
+
+		return true;
+	}
+
+	public function get_owner($id)
+	{
+		return $this->db->query("
+			SELECT user_id
+			FROM multipaste
+			WHERE url_id = ?
+			", array($id))->row_array()["user_id"];
+	}
+
+	public function get_multipaste($id)
+	{
+		return $this->db->query("
+			SELECT url_id, user_id, date
+			FROM multipaste
+			WHERE url_id = ?
+			", array($id))->row_array();
+	}
+
+	public function get_files($url_id)
+	{
+		$ret = array();
+
+		$query = $this->db->query("
+			SELECT mfm.file_url_id
+			FROM multipaste_file_map mfm
+			JOIN multipaste m ON m.multipaste_id = mfm.multipaste_id
+			WHERE m.url_id = ?
+			ORDER BY mfm.sort_order
+			", array($url_id))->result_array();
+
+		foreach ($query as $row) {
+			$filedata = $this->mfile->get_filedata($row["file_url_id"]);
+			$ret[] = $filedata;
+		}
+
+		return $ret;
+	}
+
+	public function get_multipaste_id($url_id)
+	{
+		$query = $this->db->query("
+			SELECT multipaste_id
+			FROM multipaste
+			WHERE url_id = ?
+			", array($url_id));
+
+		if ($query->num_rows() > 0) {
+			return $query->row_array()["multipaste_id"];
+		}
+
+		return false;
+	}
+
+}
diff --git a/application/views/file/file_info.php b/application/views/file/file_info.php
index 6c2772a21..0620ac9bd 100644
--- a/application/views/file/file_info.php
+++ b/application/views/file/file_info.php
@@ -1,4 +1,4 @@
-<div class="center">
+<div class="center simple-container">
 	<?php if($filedata): ?>
 		<div class="table-responive">
 			<table class="table" style="margin: auto">
diff --git a/application/views/file/fragments/alert-wide.php b/application/views/file/fragments/alert-wide.php
new file mode 100644
index 000000000..ae303e119
--- /dev/null
+++ b/application/views/file/fragments/alert-wide.php
@@ -0,0 +1,3 @@
+<div class="alert alert-danger alert-wide">
+	<?php echo $error_message; ?>
+</div>
diff --git a/application/views/file/fragments/thumbnail.php b/application/views/file/fragments/thumbnail.php
new file mode 100644
index 000000000..6bd82fcb9
--- /dev/null
+++ b/application/views/file/fragments/thumbnail.php
@@ -0,0 +1,9 @@
+<!-- Comment markers background: http://stackoverflow.com/a/14776780/953022 -->
+<div class="container container-wide">
+<div class="upload_thumbnails"><!--
+	<?php foreach($items as $key => $item): ?>
+		--><a href="<?php echo site_url("/".$item["id"])."/"; ?>" title="<?php echo htmlentities($item["filename"]); ?>" data-content="<?php echo htmlentities($item["tooltip"]); ?>" data-id="<?php echo $item["id"]; ?>"><img class="thumb" src="<?php echo site_url("file/thumbnail/".$item["id"]); ?>"></a><!--
+	<?php endforeach; ?>
+	-->
+</div>
+</div>
diff --git a/application/views/file/fragments/uploads_table.php b/application/views/file/fragments/uploads_table.php
new file mode 100644
index 000000000..142d19e91
--- /dev/null
+++ b/application/views/file/fragments/uploads_table.php
@@ -0,0 +1,26 @@
+<?php register_js_include("/data/js/jquery.tablesorter.min.js"); ?>
+<div class="table-responsive container-wide">
+	<p>Non-previewable file(s):</p>
+	<table class="table table-striped tablesorter">
+		<thead>
+			<tr>
+				<th>ID</th>
+				<th>Filename</th>
+				<th>Mimetype</th>
+				<th>Date</th>
+				<th>Size</th>
+			</tr>
+		</thead>
+		<tbody>
+			<?php foreach($items as $item): ?>
+				<tr>
+					<td><a href="<?php echo site_url("/".$item["id"]) ?>/"><?php echo $item["id"] ?></a></td>
+					<td class="wrap"><?php echo htmlspecialchars($item["filename"]); ?></td>
+					<td><?php echo $item["mimetype"] ?></td>
+					<td class="nowrap" data-sort-value="<?=$item["date"]; ?>"><?php echo date("r", $item["date"]); ?></td>
+					<td><?php echo format_bytes($item["filesize"]) ?></td>
+				</tr>
+			<?php endforeach; ?>
+		</tbody>
+	</table>
+</div>
diff --git a/application/views/file/html_footer.php b/application/views/file/html_footer.php
index bbec7ebd1..bd07b63f9 100644
--- a/application/views/file/html_footer.php
+++ b/application/views/file/html_footer.php
@@ -1,6 +1,4 @@
-    </div>
-    </div>
-
+<div class="container">
 <?php
 $force_full_html = true;
 include(FCPATH."application/views/footer.php");
diff --git a/application/views/file/html_header.php b/application/views/file/html_header.php
index 2c556720c..fdce101a2 100644
--- a/application/views/file/html_header.php
+++ b/application/views/file/html_header.php
@@ -2,95 +2,14 @@
 $force_full_html = true;
 include(FCPATH."application/views/header.php"); ?>
 
-</div>
+</div><!-- .container -->
 
 <script type="text/javascript">
 	/* <![CDATA[ */
 	window.lexers = <?php echo json_encode($lexers); ?>;
-	window.paste_base = '<?php echo site_url($id) ?>';
 	/* ]]> */
 </script>
 
-<?php if (isset($error_message)) { ?>
-<div class="alert alert-danger" style="text-align: center; border-radius: 0;">
-	<?php echo $error_message; ?>
-</div>
-<?php } ?>
-
-<div class="container paste-container">
-	<div style="border:1px solid #ccc;">
-		<div class="navbar navbar-default navbar-static-top navbar-paste">
-			<ul class="nav navbar-nav navbar-left dont-float">
-				<li><a href="#file-info" class="navbar-brand" data-toggle="modal"><?php echo $title ?></a></li>
-				<li class="divider"></li>
-				<li class="dropdown">
-					<a href="#" class="dropdown-toggle" data-toggle="dropdown" id="language-toggle">
-						Language: <?php echo htmlspecialchars($current_highlight); ?>
-						<b class="caret"></b>
-					</a>
-					<div class="dropdown-menu" style="padding: 15px;">
-						<form>
-							<input type="text" id="language" placeholder="Language" class="form-control">
-						</form>
-					</div>
-				</li>
-				<li class="divider"></li>
-				<li>
-					<a href="#file-info" role="button" data-toggle="modal">Info</a>
-				</li>
-				<li class="divider"></li>
-				<li><a href="<?php echo site_url('file/index?repaste='.$id); ?>" role="button">Repaste</a></li>
-			</ul>
-			<div class="btn-group navbar-right" style="margin: 8px;">
-				<a id="linewrap" class="btn btn-default" rel="tooltip" title="Toggle wrapping of long lines">Linewrap</a>
-				<a href="<?php echo site_url($id."/plain") ?>" class="btn btn-default" rel="tooltip" title="View as plain text">Plain</a>
-				<a href="<?php echo site_url($id) ?>" class="btn btn-default" rel="tooltip" title="View as raw file (org. mime type)">Raw</a>
-				<?php if ($current_highlight === 'rmd') { ?>
-				<a href="<?php echo site_url($id)."/" ?>" class="btn btn-default" rel="tooltip" title="Render as Code">Code</a>
-				<?php } else { ?>
-				<a href="<?php echo site_url($id."/rmd") ?>" class="btn btn-default" rel="tooltip" title="Render as Markdown">Markdown</a>
-				<?php } ?>
-			</div>
-		</div> <!-- .navbar -->
-		<div id="file-info" class="modal fade" role="dialog" aria-labelledby="file-info" aria-hidden="true">
-			<div class="modal-dialog">
-				<div class="modal-content">
-					<div class="modal-header">
-						<button type="button" class="close" data-dismiss="modal">&times;</button>
-						<h3 class="modal-title">Paste Information</h3>
-					</div>
-					<div class="modal-body">
-						<table class="table">
-							<tr>
-								<td style="border:0;">Filename:</td>
-								<td style="border:0;"><?php echo htmlspecialchars($filedata["filename"]) ?></td>
-							</tr>
-							<tr>
-								<td>Size:</td>
-								<td><?php echo format_bytes($filedata["filesize"]) ?></td>
-							</tr>
-							<tr>
-								<td>Mimetype:</td>
-								<td><?php echo $filedata["mimetype"] ?></td>
-							</tr>
-							<tr>
-								<td>Uploaded:</td>
-								<td><?php echo date("r", $filedata["date"]) ?></td>
-							</tr>
-							<tr>
-								<td>Removal:</td>
-								<td><?php echo $timeout ?></td>
-							</tr>
-						</table>
-					</div>
-					<div class="modal-footer">
-						<?php echo form_open("file/do_delete/", array("style" => "display: inline")); ?>
-						<input type="hidden" name="ids[<?php echo $id; ?>]" value="<?php echo $id; ?>">
-						<button class="btn btn-danger pull-left" aria-hidden="true">Delete</button>
-					</form>
-					<button class="btn btn-default" data-dismiss="modal" aria-hidden="true">Close</button>
-				</div>
-			</div>
-		</div>
-	</div> <!-- .modal -->
-	<div>
+<?php if (isset($error_message)) {
+	include 'framgents/alert-wide.php';
+} ?>
diff --git a/application/views/file/html_paste_footer.php b/application/views/file/html_paste_footer.php
new file mode 100644
index 000000000..22bc4dabb
--- /dev/null
+++ b/application/views/file/html_paste_footer.php
@@ -0,0 +1,2 @@
+</div><!-- .container .paste-container -->
+
diff --git a/application/views/file/html_paste_header.php b/application/views/file/html_paste_header.php
new file mode 100644
index 000000000..f4d3021ec
--- /dev/null
+++ b/application/views/file/html_paste_header.php
@@ -0,0 +1,79 @@
+<div class="container paste-container container-wide">
+	<div style="border:1px solid #ccc;">
+		<div class="navbar navbar-default navbar-static-top navbar-paste">
+			<ul class="nav navbar-nav navbar-left dont-float">
+				<li><a href="<?=site_url($id)."/"; ?>" class="navbar-brand" data-toggle="modal"><?php echo $title ?></a></li>
+				<li class="divider"></li>
+				<li class="dropdown">
+					<a href="#" class="dropdown-toggle" data-toggle="dropdown" id="language-toggle-<?=$id; ?>">
+						Language: <?php echo htmlspecialchars($current_highlight); ?>
+						<b class="caret"></b>
+					</a>
+					<div class="dropdown-menu" style="padding: 15px;">
+						<form>
+						<input data-base-url="<?=site_url($id); ?>" type="text" id="language-<?=$id; ?>" placeholder="Language" class="form-control">
+						</form>
+					</div>
+				</li>
+				<li class="divider"></li>
+				<li>
+					<a href="#file-info-<?=$id; ?>" role="button" data-toggle="modal">Info</a>
+				</li>
+				<?php if (isset($user_logged_in) && $user_logged_in) { ?>
+				<li class="divider"></li>
+				<li><a href="<?php echo site_url('file/index?repaste='.$id); ?>" role="button">Repaste</a></li>
+				<?php } ?>
+			</ul>
+			<div class="btn-group navbar-right" style="margin: 8px;">
+				<a id="linewrap-<?=$id; ?>" class="btn btn-default" rel="tooltip" title="Toggle wrapping of long lines">Linewrap</a>
+				<a href="<?php echo site_url($id."/plain") ?>" class="btn btn-default" rel="tooltip" title="View as plain text">Plain</a>
+				<a href="<?php echo site_url($id) ?>" class="btn btn-default" rel="tooltip" title="View as raw file (org. mime type)">Raw</a>
+				<?php if ($current_highlight === 'rmd') { ?>
+				<a href="<?php echo site_url($id)."/" ?>" class="btn btn-default" rel="tooltip" title="Render as Code">Code</a>
+				<?php } else { ?>
+				<a href="<?php echo site_url($id."/rmd") ?>" class="btn btn-default" rel="tooltip" title="Render as Markdown">Markdown</a>
+				<?php } ?>
+			</div>
+		</div> <!-- .navbar -->
+		<div id="file-info-<?=$id; ?>" class="modal fade" role="dialog" aria-labelledby="file-info-<?=$id; ?>" aria-hidden="true">
+			<div class="modal-dialog">
+				<div class="modal-content">
+					<div class="modal-header">
+						<button type="button" class="close" data-dismiss="modal">&times;</button>
+						<h3 class="modal-title">Paste Information</h3>
+					</div>
+					<div class="modal-body">
+						<table class="table">
+							<tr>
+								<td style="border:0;">Filename:</td>
+								<td style="border:0;"><?php echo htmlspecialchars($filedata["filename"]) ?></td>
+							</tr>
+							<tr>
+								<td>Size:</td>
+								<td><?php echo format_bytes($filedata["filesize"]) ?></td>
+							</tr>
+							<tr>
+								<td>Mimetype:</td>
+								<td><?php echo $filedata["mimetype"] ?></td>
+							</tr>
+							<tr>
+								<td>Uploaded:</td>
+								<td><?php echo date("r", $filedata["date"]) ?></td>
+							</tr>
+							<tr>
+								<td>Removal:</td>
+								<td><?php echo $timeout ?></td>
+							</tr>
+						</table>
+					</div>
+					<div class="modal-footer">
+						<?php echo form_open("file/do_delete/", array("style" => "display: inline")); ?>
+							<input type="hidden" name="ids[<?php echo $id; ?>]" value="<?php echo $id; ?>">
+							<button class="btn btn-danger pull-left" aria-hidden="true">Delete</button>
+						</form>
+						<button class="btn btn-default" data-dismiss="modal" aria-hidden="true">Close</button>
+					</div>
+				</div>
+			</div>
+		</div> <!-- .modal -->
+	</div>
diff --git a/application/views/file/multipaste_info.php b/application/views/file/multipaste_info.php
new file mode 100644
index 000000000..5baf732a2
--- /dev/null
+++ b/application/views/file/multipaste_info.php
@@ -0,0 +1,26 @@
+<div class="center simple-container">
+	<div class="table-responive">
+		<table class="table" style="margin: auto">
+			<tr>
+				<td class="title">ID</td>
+				<td class="text"><a href="<?=site_url($id); ?>/"><?=$id; ?></a></td>
+			</tr>
+			<tr>
+				<td class="title">Number of files</td>
+				<td class="text"><?=$file_count; ?></td>
+			</tr>
+			<tr>
+				<td class="title">Date of upload</td>
+				<td class="text"><?=date("r", $upload_date); ?></td>
+			</tr>
+			<tr>
+				<td class="title">Date of removal</td>
+				<td class="text"><?=$timeout_string; ?></td>
+			</tr>
+			<tr>
+				<td class="title">Total size (including duplicates)</td>
+				<td class="text"><?=format_bytes($size); ?></td>
+			</tr>
+		</table>
+	</div>
+</div>
diff --git a/application/views/file/upload_form.php b/application/views/file/upload_form.php
index 612a1bf82..44828c53a 100644
--- a/application/views/file/upload_form.php
+++ b/application/views/file/upload_form.php
@@ -29,6 +29,7 @@
 				<div>
 					<input class="file-upload" type="file" name="file[]" multiple="multiple"><br>
 				</div>
+				<label><input type="checkbox" name="multipaste" value="1"> Create multipaste</label><br>
 				<button type="submit" id="upload_button" class="btn btn-primary">Upload it!</button>
 			</div>
 		</div>
diff --git a/application/views/file/upload_history.php b/application/views/file/upload_history.php
index 5015e9bf6..10afc53e9 100644
--- a/application/views/file/upload_history.php
+++ b/application/views/file/upload_history.php
@@ -15,7 +15,7 @@
                 </tr>
             </thead>
             <tbody>
-                <?php foreach($query as $key => $item): ?>
+                <?php foreach($items as $key => $item): ?>
                     <tr>
                         <td><input type="checkbox" name="ids[<?php echo $item["id"] ?>]" value="<?php echo $item["id"] ?>" class="delete-history"></td>
                         <td><a href="<?php echo site_url("/".$item["id"]) ?>/"><?php echo $item["id"] ?></a></td>
diff --git a/application/views/file/upload_history_thumbnails.php b/application/views/file/upload_history_thumbnails.php
index bcafc44ca..a061d9676 100644
--- a/application/views/file/upload_history_thumbnails.php
+++ b/application/views/file/upload_history_thumbnails.php
@@ -6,14 +6,7 @@
 </div>
 
 <?php include 'nav_history.php'; ?>
-
-<!-- Comment markers background: http://stackoverflow.com/a/14776780/953022 -->
-<div class="upload_history_thumbnails"><!--
-	<?php foreach($query as $key => $item): ?>
-		--><a href="<?php echo site_url("/".$item["id"]); ?>" title="<?php echo htmlentities($item["filename"]); ?>" data-content="<?php echo htmlentities($item["tooltip"]); ?>" data-id="<?php echo $item["id"]; ?>"><img class="thumb" src="<?php echo site_url("file/thumbnail/".$item["id"]); ?>"></a><!--
-	<?php endforeach; ?>
-	-->
-</div>
+<?php include 'fragments/thumbnail.php'; ?>
 
 <div class="row-fluid">
 	<div class="span12 alert alert-block alert-info">
diff --git a/application/views/file_plaintext/upload_history.php b/application/views/file_plaintext/upload_history.php
index f9a14af0b..53801494f 100644
--- a/application/views/file_plaintext/upload_history.php
+++ b/application/views/file_plaintext/upload_history.php
@@ -9,13 +9,13 @@ echo
 	.mb_str_pad($fields["hash"], $lengths["hash"])." | "
 	.mb_str_pad($fields["filesize"], $lengths["filesize"])."\n";
 
-foreach($query as $key => $item) {
+foreach($items as $key => $item) {
 	echo
 		mb_str_pad($item["id"], $lengths["id"])." | "
 		.mb_str_pad($item["filename"], $lengths["filename"])." | "
 		.mb_str_pad($item["mimetype"], $lengths["mimetype"])." | "
 		.date($dateformat, $item["date"])." | "
-		.$item["hash"]." | "
+		.mb_str_pad($item["hash"], $lengths["hash"])." | "
 		.$item["filesize"]."\n";
 }
 ?>
diff --git a/application/views/footer.php b/application/views/footer.php
index e748cd4e3..ae8d2e575 100644
--- a/application/views/footer.php
+++ b/application/views/footer.php
@@ -3,9 +3,9 @@ if (is_cli_client() && !isset($force_full_html)) {
 	return;
 }
 ?>
-	</div>
+	</div><!-- .container -->
 <div id="push"></div>
-</div>
+</div> <!-- #wrap -->
 <footer class="footer" id="footer">
 	<div class="container muted credits">
 			<p>Site code licensed under <a href="http://www.gnu.org/licenses/agpl-3.0.html" target="_blank">AGPL v3</a>.</p>
diff --git a/data/css/style.css b/data/css/style.css
index 5f1286e82..cd8bfa4d2 100644
--- a/data/css/style.css
+++ b/data/css/style.css
@@ -62,6 +62,10 @@
 	width: 200px;
 }
 
+.file-upload {
+	width: 100%;
+}
+
 .navbar-nav > li > .dropdown-menu {
 	margin-top: 2px;
 }
@@ -119,6 +123,11 @@ textarea.text-upload {
 	word-wrap: normal;
 }
 
+.alert-wide {
+	text-align: center;
+	border-radius: 0;
+}
+
 code, pre, textarea {
 	font-family: "Dejavu sans mono", Monaco, monospace;
 }
@@ -184,13 +193,23 @@ body {
 	padding-left: 0;
 }
 
-.paste-container {
-	padding-top: 40px;
-	background: #eee;
-	padding: 3px;
+.container-wide {
+	padding: 0;
 	max-width: 100%;
 	margin-left: 20px;
 	margin-right: 20px;
+	margin-bottom: 20px;
+}
+
+.simple-container {
+	margin-left: 20px;
+	margin-right: 20px;
+	margin-bottom: 20px;
+}
+
+.paste-container {
+	padding: 3px;
+	background: #eee;
 }
 
 .code pre {
@@ -265,9 +284,6 @@ body {
 .highlight_line {
 	background: #ffffcc;
 }
-#file-info {
-	display: none;
-}
 
 .ui-autocomplete {
 	z-index: 1500;
@@ -276,29 +292,29 @@ body {
 .popover {
 	word-break: break-word;
 	word-wrap: normal;
+	max-width: 400px;
 }
 
-.upload_history_thumbnails {
+.upload_thumbnails {
 	margin: 0 auto;
-	padding-bottom: 50px;
 }
 
-.upload_history_thumbnails img.thumb,
-.upload_history_thumbnails a {
+.upload_thumbnails img.thumb,
+.upload_thumbnails a {
 	width: 150px;
 	height: 150px;
 }
 
-.upload_history_thumbnails a {
+.upload_thumbnails a {
 	margin: 1px;
 	display: inline-block;
 }
 
-.upload_history_thumbnails .marked {
+.upload_thumbnails .marked {
 	background: red;
 }
 
-.upload_history_thumbnails .marked img {
+.upload_thumbnails .marked img {
 	opacity: 0.4;
 }
 
diff --git a/data/js/script.js b/data/js/script.js
index 2c4969685..77336a88e 100644
--- a/data/js/script.js
+++ b/data/js/script.js
@@ -10,7 +10,7 @@ function fixedEncodeURIComponent (str) {
 
 			$('.highlight_line').removeClass("highlight_line");
 
-			if (hash.match(/^#n\d+$/) === null) {
+			if (hash.match(/^#n(?:-.+-)?\d+$/) === null) {
 				return;
 			}
 
@@ -25,22 +25,24 @@ function fixedEncodeURIComponent (str) {
 			lexer_source.push({ label: window.lexers[key], value: key });
 		}
 
-		$('#language').autocomplete({
+		$('[id^=language-]').autocomplete({
 			source: lexer_source,
 			select: function(event, ui) {
-				window.location = window.paste_base + '/' + fixedEncodeURIComponent(ui.item.value);
+				event.preventDefault();
+				window.location = $(event.target).data("base-url") + '/' + fixedEncodeURIComponent(ui.item.value);
 			}
 		});
 
-		$(document).on("keyup", "#language", function(event) {
+		$(document).on("keyup", "[id^=language-]", function(event) {
 			if (event.keyCode == 13) {
-				window.location = window.paste_base + '/' + fixedEncodeURIComponent($(this).val());
+				event.preventDefault();
+				window.location = $(event.target).data("base-url") + '/' + fixedEncodeURIComponent($(this).val());
 			}
 		});
 
-		$('#language-toggle').click(function() {
+		$('[id^=language-toggle-]').click(function(event) {
 			setTimeout(function() {
-				$('#language').focus();
+				$(event.target).parent().find('[id^=language-]').focus();
 			}, 0);
 		});
 
@@ -54,7 +56,7 @@ function fixedEncodeURIComponent (str) {
 		});
 
 		window.lines_wrapped = true;
-		$('#linewrap').click(function() {
+		$('[id^=linewrap-]').click(function() {
 			if (window.lines_wrapped == true) {
 				$(".highlight > pre").css("white-space", "pre");
 			} else {
@@ -63,7 +65,7 @@ function fixedEncodeURIComponent (str) {
 			window.lines_wrapped = !window.lines_wrapped;
 		});
 
-		$('.upload_history_thumbnails a').popover({
+		$('.upload_thumbnails a').popover({
 			trigger: "hover",
 			placement: "bottom",
 			html: true,
@@ -75,7 +77,7 @@ function fixedEncodeURIComponent (str) {
 					window.page_mode = "normal";
 					$('#delete_button').hide();
 					$("#delete_form input[id^='delete_']").remove();
-					$(".upload_history_thumbnails .marked").removeClass("marked");
+					$(".upload_thumbnails .marked").removeClass("marked");
 					break;
 				default:
 					window.page_mode = "delete";
@@ -84,7 +86,7 @@ function fixedEncodeURIComponent (str) {
 			}
 		});
 
-		$('.upload_history_thumbnails a').on("click", function(event) {
+		$('.upload_thumbnails a').on("click", function(event) {
 			if (window.page_mode == "delete") {
 				event.preventDefault();
 				var data_id = $(event.target).parent().attr("data-id");
@@ -105,8 +107,14 @@ function fixedEncodeURIComponent (str) {
 		});
 
 		function handle_resize() {
-			var div = $('.upload_history_thumbnails');
-			div.width(div.parent().width() - (div.parent().width() % div.find('a').outerWidth(true)));
+			$('.upload_thumbnails').each(function() {
+				var div = $(this);
+
+				need_multiple_lines = div.parent().width() < (div.find('a').outerWidth(true) * div.find('a').size());
+
+				div.css('margin-left', need_multiple_lines ? "auto" : "0");
+				div.width(div.parent().width() - (div.parent().width() % div.find('a').outerWidth(true)));
+			});
 		}
 
 		$(window).resize(function() {