add multipaste support

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

1 files changed, 160 insertions, 0 deletions

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;
+	}
+
+}