Initial commit

files_opds/ajax/clear_bookshelf.php

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+<?php
+
+/**
+ * ownCloud - Files_Opds App
+ *
+ * @author Frank de Lange
+ * @copyright 2014 Frank de Lange
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ */
+
+namespace OCA\Files_Opds;
+
+$l = new \OC_L10N('files_opds');
+
+\OCP\JSON::checkLoggedIn();
+\OCP\JSON::callCheck();
+
+Bookshelf::clear();
+\OCP\JSON::success(array( "data" => array( "message" => $l->t("Bookshelf cleared")))); 

files_opds/ajax/personal.php

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+<?php
+
+/**
+ * ownCloud - Files_Opds App
+ *
+ * @author Frank de Lange
+ * @copyright 2014 Frank de Lange
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ */
+
+namespace OCA\Files_Opds;
+
+\OCP\JSON::callCheck();
+\OCP\JSON::checkLoggedIn();
+
+$l = new \OC_L10N('files_opds');
+
+$opdsEnable = isset($_POST['opdsEnable']) ? $_POST['opdsEnable'] : 'false';
+$rootPath = isset($_POST['rootPath']) ? $_POST['rootPath'] : null;
+$fileTypes = isset($_POST['fileTypes']) ? $_POST['fileTypes'] : '';
+
+if (!is_null($rootPath)){
+        if (\OC\Files\Filesystem::file_exists($rootPath) === false ){
+		\OCP\JSON::error(
+			array(
+				'data' => array('message'=> $l->t('Directory does not exist!'))
+			)
+		);
+        } else {
+        	Config::set('root_path', $rootPath);
+        	\OCP\JSON::success(
+                array(
+                        'data' => array('message'=> $l->t('Settings updated successfully.'))
+                        )
+        	);
+	}
+        Config::set('enable', $opdsEnable);
+        Config::set('file_types', $fileTypes);
+	Config::set('id', Util::genUuid());
+        exit();
+}
+
+exit();
+

files_opds/appinfo/app.php

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+<?php
+
+$l = OC_L10N::get('files');
+
+\OCP\App::registerPersonal('files_opds', 'personal');
+
+

files_opds/appinfo/info.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0"?>
+<info>
+        <id>files_opds</id>
+        <name>OPDS catalog</name>
+        <description>Personal OPDS catalog</description>
+        <licence>AGPL</licence>
+	<version>0.1</version>
+        <author>Frank de Lange</author>
+        <requiremin>7.0</requiremin>
+        <shipped>true</shipped>
+        <default_enable/>
+</info>
+

files_opds/index.php

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+<?php
+
+/**
+ * ownCloud - Files_Opds App
+ *
+ * @author Frank de Lange
+ * @copyright 2014 Frank de Lange
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ */
+
+namespace OCA\Files_Opds;
+
+\OCP\App::checkAppEnabled('files_opds');
+
+/* Enable login through basic auth, using normal OC username/password
+ * This is required because opds clients do not support the normal
+ * OC login process
+ */
+if (Util::authenticateUser() === false) {
+	Util::changeHttpStatus(401);
+	exit;
+}
+
+\OCP\User::checkLoggedIn();
+
+/* Refuse access if user disabled opds support */
+if (Config::get('enable', 'false') === 'false') {
+	Util::changeHttpStatus(403);
+	exit;
+}
+
+/* id defaults to 'root' (meaning 'serve root feed') */
+$id = isset($_GET['id']) ? $_GET['id'] : 'root';
+$dir = \OC\Files\Filesystem::normalizePath(\OC\Files\Filesystem::getPath($id));
+$root = Config::get('root_path', '/Library');
+
+/* Only feed files descending from designated root directory */
+if (!(Files::isChild($root,$dir))) {
+	$dir = $root;
+}
+
+$dirInfo = \OC\Files\Filesystem::getFileInfo($dir);
+
+/* If requested resource is a file, serve it, otherwise produce opds feed */
+switch ($dirInfo->getType()) {
+	case 'file':
+		Util::serveFile($dir,$id);
+		break;
+	case 'dir':
+		Util::serveFeed($dir, $id);
+		break;
+	default:
+		Util::logWarn("I don't know how to handle files of type " . $dirInfo->getType());
+		break;
+}

files_opds/js/personal.js

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+$(document).ready(function(){
+	// clear bookshelf
+	$('#opds-clear-bookshelf').on("click", function() {
+		$('#opds-really-clear-bookshelf,#opds-dont-clear-bookshelf').show();
+	});
+	$('#opds-dont-clear-bookshelf').on("click", function() {
+		$('#opds-really-clear-bookshelf,#opds-dont-clear-bookshelf').hide();
+	});
+	$('#opds-really-clear-bookshelf').on("click", function() {
+                $.post(OC.filePath('files_opds','ajax','clear_bookshelf.php'), {},
+                        function(result){
+                                if(result) {
+                                        OC.msg.finishedSaving('#opds-personal .clr', result);
+					$('#opds-book-count').hide();
+                                }
+                        });
+		$('#opds-really-clear-bookshelf,#opds-dont-clear-bookshelf').hide();
+        });
+
+	// save settings
+        var opdsSettings = {
+                save : function() {
+			var opdsEnable = document.getElementById('opds-enable').checked ? 'true' : 'false';
+                        var data = {
+                                opdsEnable : opdsEnable,
+                                rootPath : $('#opds-root-path').val(),
+                                fileTypes : $('#opds-file-types').val()
+                        };
+                        OC.msg.startSaving('#opds-personal .msg');
+                        $.post(OC.filePath('files_opds', 'ajax', 'personal.php'), data, opdsSettings.afterSave);
+                },
+                afterSave : function(data){
+                        OC.msg.finishedSaving('#opds-personal .msg', data);
+                }
+        };
+        $('#opds-root-path,#opds-file-types').blur(opdsSettings.save);
+        $('#opds-root-path,#opds-file-types').keypress(function( event ) {
+                                                if (event.which == 13) {
+                                                  event.preventDefault();
+                                                  opdsSettings.save();
+                                                }
+        });
+        $('#opds-enable').on("change", opdsSettings.save);
+});
+

files_opds/lib/bookshelf.php

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+<?php
+
+/**
+ * ownCloud - Files_Opds App
+ *
+ * @author Frank de Lange
+ * @copyright 2014 Frank de Lange
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ */
+
+namespace OCA\Files_Opds;
+
+/**
+ * Bookshelf class for publishing as OPDS
+ *
+ * This implements a 'personal bookshelf', listing books
+ * which have been downloaded from the OPDS feed.
+ */
+class Bookshelf
+{
+	/**
+	 * @brief add book to personal bookshelf
+	 *
+	 * @param int $id book to add to bookshelf
+	 */
+	public static function add($id) {
+		$bookshelf = json_decode(Config::get('bookshelf', ''), true);
+		if(!isset($bookshelf[$id])) {
+			$bookshelf[$id]=time();
+		}
+		Config::set('bookshelf', json_encode($bookshelf));
+	}
+
+	/**
+	 * @brief clear personal bookshelf
+	 */
+	public static function clear() {
+		Config::set('bookshelf', '');
+	}
+
+	/**
+	 * @brief return number of books on personal bookshelf
+	 * @return int number of books
+	 */
+	public static function count() {
+		return substr_count(Config::get('bookshelf', ''), ':');
+	}
+
+	/**
+	 * @brief list bookshelf contents
+	 *
+	 * @return array of FileInfo[], sorted by time added
+	 */
+	public static function get() {
+		$files = array();
+		$bookshelf = json_decode(Config::get('bookshelf', ''), true);
+		arsort($bookshelf);
+		while (list($id, $time) = each($bookshelf)) {
+			array_push($files, \OC\Files\Filesystem::getFileInfo(\OC\Files\Filesystem::normalizePath(\OC\Files\Filesystem::getPath($id))));
+		}
+		return $files;
+	}
+}

files_opds/lib/config.php

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+<?php
+
+/**
+ * ownCloud - Files_Opds App
+ *
+ * @author Frank de Lange
+ * @copyright 2014 Frank de Lange
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ */
+
+namespace OCA\Files_Opds;
+
+/**
+ * Config class for publishing as OPDS
+ */
+class Config
+{
+	/**
+	 * @brief get user config value
+	 *
+	 * @param string $key value to retrieve
+	 * @param string $default default value to use
+	 * @return string retrieved value or default
+	 */
+	public static function get($key, $default) {
+		return \OCP\Config::getUserValue(\OCP\User::getUser(), 'files_opds', $key, $default);
+	}
+
+	/**
+	 * @brief set user config value
+	 *
+	 * @param string $key key for value to change
+	 * @param string $value value to use
+	 * @return bool success
+	 */
+	public static function set($key, $value) {
+		return \OCP\Config::setUserValue(\OCP\User::getUser(), 'files_opds', $key, $value);
+	}
+}

files_opds/lib/files.php

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+<?php
+
+/**
+ * ownCloud - Files_Opds App
+ *
+ * @author Frank de Lange
+ * @copyright 2014 Frank de Lange
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ */
+
+namespace OCA\Files_Opds;
+
+/**
+ * Files class, extendes \OCA\Files, tailored for OPDS
+ */
+class Files extends \OCA\Files\Helper
+{
+        /**
+         * Formats the file info to be returned as OPDS to the client.
+         *
+         * @param \OCP\Files\FileInfo $i
+         * @return array formatted file info
+         */
+        public static function formatFileInfo($i) {
+                $entry = array();
+
+                $entry['id'] = $i['fileid'];
+                $entry['mtime'] = $i['mtime'] * 1000;
+                $entry['icon'] = self::determineIcon($i);
+                $entry['name'] = $i->getName();
+                $entry['mimetype'] = $i['mimetype'];
+                $entry['size'] = $i['size'];
+                $entry['type'] = $i['type'];
+                return $entry;
+        }
+
+        /**
+         * Format file info for OPDS feed
+         * @param \OCP\Files\FileInfo[] $fileInfos file infos
+         */
+        public static function formatFileInfos($fileInfos) {
+                $files = array();
+		/* if set, add only files with given extensions */
+		$fileTypes = array_filter(explode(',', strtolower(Config::get('file_types', ''))));
+                foreach ($fileInfos as $i) {
+			if((!empty($fileTypes)) && (!in_array(strtolower(substr(strrchr($i->getName(), "."), 1)), $fileTypes))) {
+				continue;
+			}
+                        $files[] = self::formatFileInfo($i);
+                }
+
+                return $files;
+        }
+
+	/*
+	 * @brief check if $child is a subdirectory of $parent
+	 *
+	 * @param string $parent a directory
+	 * @param string $child a directory
+	 * @return bool true if $child is a subdirectory of $parent
+	 */
+	public static function isChild($parent, $child) {
+		return strpos($child, $parent . '/') === 0;
+	}
+}

files_opds/lib/util.php

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+<?php
+
+/**
+ * ownCloud - Files_Opds App
+ *
+ * @author Frank de Lange
+ * @copyright 2014 Frank de Lange
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ */
+
+namespace OCA\Files_Opds;
+
+/**
+ * Utility class for OPDS
+ */
+class Util
+{
+	/**
+	 * @brief Authenticate user by HTTP Basic Authentication
+	 * with user name and password
+	 */
+	public static function authenticateUser() {
+		if (!isset($_SERVER['PHP_AUTH_USER'])) {
+			$defaults = new \OC_Defaults();
+			$realm = $defaults->getName();
+			header ("HTTP/1.0 401 Unauthorized");
+			header ('WWW-Authenticate: Basic realm="' . $realm. '"');
+                        exit();
+                }
+
+		$userName = $_SERVER['PHP_AUTH_USER'];
+
+		// Check the password in the ownCloud database
+                return self::checkPassword($userName, $_SERVER['PHP_AUTH_PW']);
+        }
+
+        /**
+        * @brief Checks the password of a user. 
+        * @param string $userName ownCloud user name whose password will be checked.
+        * @param string $password ownCloud password.
+        * @return bool True if the password is correct, false otherwise.
+        *
+        */
+        private static function checkPassword($userName, $password) {
+
+                // Check password normally
+                if (\OCP\User::checkPassword($userName, $password) != false) {
+                        return true;
+                }
+
+                return false;
+        }
+
+        /**
+        * @brief Change HTTP response code.
+        *
+        * @param integer $statusCode The new HTTP status code.
+        */
+        public static function changeHttpStatus($statusCode) {
+
+                $message = '';
+                switch ($statusCode) {
+                        case 400: $message = 'Bad Request'; break;
+                        case 401: $message = 'Unauthorized'; break;
+                        case 403: $message = 'Forbidden'; break;
+                        case 404: $message = 'Not Found'; break;
+                        case 500: $message = 'Internal Server Error'; break;
+                        case 503: $message = 'Service Unavailable'; break;
+                }
+
+                // Set status code and status message in HTTP header
+                header('HTTP/1.0 ' . $statusCode . ' ' . $message);
+        }
+
+	/**
+	 * @brief offer single file for download
+	 * 
+	 * @param string $path full path to file
+	 * @param int $id file id
+	 */
+	public static function serveFile($path, $id) {
+		\OCP\User::checkLoggedIn();
+		\OC::$session->close();
+		Bookshelf::add($id);
+		$dirName = dirname($path);
+		$fileName = basename($path);
+		\OC_Files::get($dirName, array($fileName), $_SERVER['REQUEST_METHOD'] == 'HEAD');
+	}
+
+	/**
+	 * @brief serve opds feed for given directory
+	 *
+	 * @param string $dir full path to directory
+	 * @param int $id requested id
+	 */
+	public static function serveFeed($dir, $id) {
+		if (isset($_SERVER['HTTP_ACCEPT']) && stristr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
+                        header('Content-Type: application/atom+xml');
+                } else {
+                        header('Content-Type: text/xml; charset=UTF-8');
+                }
+                $sortAttribute = 'name';
+                $sortDirection = false;
+                $defaults = new \OC_Defaults();
+                $tmpl = new \OCP\Template('files_opds', 'feed');
+                $tmpl->assign('files', Files::formatFileInfos(Files::getFiles($dir, $sortAttribute, $sortDirection)));
+		$tmpl->assign('bookshelf', Files::formatFileInfos(Bookshelf::get()));
+		$tmpl->assign('bookshelf-count', Bookshelf::count());
+                $tmpl->assign('feed_id', self::getFeedId());
+                $tmpl->assign('id', $id);
+                $tmpl->assign('dir', $dir);
+                $tmpl->assign('user', \OCP\User::getDisplayName());
+                $tmpl->assign('ocname', $defaults->getName());
+                $tmpl->printPage();
+	}
+
+	/**
+	 * @brief generate v3 UUID based on display name and site url
+	 *
+	 * @return string uuid
+	 */
+	public static function genUuid() {
+		$defaults = new \OC_Defaults();
+		$hash = md5(\OCP\User::getDisplayName() . $defaults->getBaseUrl());
+		$hash = substr($hash, 0, 8 ) .'-'.
+			substr($hash, 8, 4) .'-3'.
+			substr($hash, 13, 3) .'-9'.
+			substr($hash, 17, 3) .'-'.
+			substr($hash, 20);
+		return $hash;
+	}
+
+	/**
+	 * @brief get feed id
+	 *
+	 * @return string feed id
+	 */
+	public static function getFeedId() {
+		return Config::get('id', '');
+	}
+
+	/**
+	 * @brief log warning
+	 * @param string message to write to log
+	 */
+	public static function logWarn($msg) {
+		\OCP\Util::writeLog('files_opds', $msg, \OCP\Util::WARN);
+	}
+}

files_opds/personal.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * ownCloud - Files_Opds app
+ *
+ * Copyright (c) 2014 Frank de Lange
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OCA\Files_Opds;
+
+\OCP\Util::addScript('files_opds', 'personal');
+
+$tmpl = new \OCP\Template('files_opds', 'personal');
+$opdsEnable = Config::get('enable', false);
+$tmpl->assign('opdsEnable-checked', ($opdsEnable === 'true') ? 'checked="checked"' : '');
+$tmpl->assign('opdsEnable-value', ($opdsEnable === 'true') ? '1' : '0');
+$tmpl->assign('rootPath', Config::get('root_path', '/Library'));
+$tmpl->assign('fileTypes', Config::get('file_types', ''));
+$tmpl->assign('bookshelf-count', Bookshelf::count());
+
+return $tmpl->fetchPage();
+

files_opds/templates/feed.php

@@ -0,0 +1,124 @@
+<?php
+
+/**
+ * ownCloud - Files_Opds App
+ *
+ * @author Frank de Lange
+ * @copyright 2014 Frank de Lange
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ */
+
+echo '<?xml version="1.0" encoding="UTF-8"?>';
+?>
+
+<feed xmlns="http://www.w3.org/2005/Atom"
+      xmlns:dc="http://purl.org/dc/terms/"
+      xmlns:opds="http://opds-spec.org/2010/catalog">
+  <id>id:<?php p($_['feed_id']); ?></id>
+  <title><?php p($l->t("%s's library", array($_['user']))); ?></title>
+  <subtitle><?php p($l->t("%s OPDS Catalog", array($_['ocname']))); ?></subtitle>
+  <updated><?php p(date("Y-m-d\TH:i:sP", $_['feed_updated'])); ?></updated>
+  <author>
+    <name><?php p($_['user']); ?></name>
+  </author>
+
+  <link rel="start"   
+        href="?id=root"
+        type="application/atom+xml;profile=opds-catalog;kind=navigation"/>
+  <link rel="self"    
+        href="?id=<?php p($_['id']); ?>"
+        type="application/atom+xml;profile=opds-catalog;kind=navigation"/>
+<?php if ($_['id'] == 'root'): ?>
+  <entry>
+    <title><?php p($l->t("Browse catalog")); ?></title>
+    <content type="text"><?php p($l->t("Browse the catalog in alphabetical order")); ?></content>
+    <link type="application/atom+xml;profile=opds-catalog;kind=navigation"
+        href="?id=directory"/>
+    <id>id:by_directory</id>
+  </entry>
+  <entry>
+    <title><?php p($l->t("%s's bookshelf", array($_['user']))); ?></title>
+    <content type="text"><?php p($l->t("This bookshelf contains %s books", array($_['bookshelf-count']))); ?></content>
+    <link type="application/atom+xml;profile=opds-catalog;kind=navigation"
+        href="?id=bookshelf"/>
+    <id>id:by_bookshelf</id>
+  </entry>
+<?php elseif ($_['id'] == 'bookshelf'): ?>
+  <link rel="http://opds-spec.org/facet" 
+        href="?id=bookshelf" 
+        title="Bookshelf" 
+        opds:activeFacet="true" />
+
+<?php foreach ($_['bookshelf'] as $file): ?>
+  <entry>
+    <title><?php p($file['name']); ?></title>
+    <updated><?php p(date("Y-m-d\TH:i:sP", $file['mtime'])); ?></updated>
+    <id>id:<?php p($file['id']); ?></id>
+    <link type="<?php p($file['mimetype']); ?>"
+        rel="alternate"
+        href="?id=<?php p($file['id']); ?>"/>
+    <link type="<?php p($file['mimetype']); ?>"
+        rel="http://opds-spec.org/acquisition/open-access"
+        href="?id=<?php p($file['id']); ?>"/>
+    <link href="<?php p($file['icon']); ?>"
+        rel="http://opds-spec.org/image"
+        type="image/jpeg" />
+    <link href="<?php p($file['icon']); ?>"
+        rel="x-stanza-cover-image"
+        type="image/jpeg" />
+    <link href="<?php p($file['icon']); ?>"
+        rel="http://opds-spec.org/thumbnail"
+        type="image/jpeg" />
+    <link href="<?php p($file['icon']); ?>"
+        rel="x-stanza-cover-image-thumbnail"
+        type="image/jpeg" />
+    <content type="text"></content>
+  </entry>
+<?php endforeach; ?>
+<?php else: ?>
+<?php foreach ($_['files'] as $file): ?>
+<?php if ($file['type'] == 'dir'): ?>
+  <entry>
+    <title><?php p($file['name']); ?></title>
+    <updated><?php p(date("Y-m-d\TH:i:sP", $file['mtime'])); ?></updated>
+    <id>id:<?php p($file['id']); ?></id>
+    <link type="application/atom+xml"
+        rel="alternate"
+        href="?id=<?php p($file['id']); ?>"/>
+    <link type="application/atom+xml;profile=opds-catalog;kind=navigation"
+        rel="subsection"
+        href="?id=<?php p($file['id']); ?>"/>
+    <content type="text"></content>
+  </entry>
+<?php else: ?>
+  <entry>
+    <title><?php p($file['name']); ?></title>
+    <updated><?php p(date("Y-m-d\TH:i:sP", $file['mtime'])); ?></updated>
+    <id>id:<?php p($file['id']); ?></id>
+    <link type="<?php p($file['mimetype']); ?>"
+        rel="alternate"
+        href="?id=<?php p($file['id']); ?>"/>
+    <link type="<?php p($file['mimetype']); ?>"
+        rel="http://opds-spec.org/acquisition/open-access"
+        href="?id=<?php p($file['id']); ?>"/>
+    <link href="<?php p($file['icon']); ?>"
+        rel="http://opds-spec.org/image"
+        type="image/jpeg" />
+    <link href="<?php p($file['icon']); ?>"
+        rel="x-stanza-cover-image"
+        type="image/jpeg" />
+    <link href="<?php p($file['icon']); ?>"
+        rel="http://opds-spec.org/thumbnail"
+        type="image/jpeg" />
+    <link href="<?php p($file['icon']); ?>"
+        rel="x-stanza-cover-image-thumbnail"
+        type="image/jpeg" />
+    <content type="text/html"></content>
+  </entry>
+<?php endif; ?>
+<?php endforeach; ?>
+<?php endif; ?>
+</feed>
+

files_opds/templates/personal.php

@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * ownCloud - Files_Opds App
+ *
+ * @author Frank de Lange
+ * @copyright 2014 Frank de Lange
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ */
+
+?>
+
+<div class="section" id="opds-personal">
+        <h2><?php p($l->t('OPDS')); ?></h2>
+        <div>
+		<input id="opds-enable" name="opds-enable" value="<?php p($_['opdsEnable-value']) ?>" <?php p($_['opdsEnable-checked']) ?> type="checkbox">
+                <label for="opds-enable"><?php p($l->t('enable OPDS catalog')) ?></label>
+	</div>
+	<div>
+                <label for="opds-root-path"><?php p($l->t('Root directory:')) ?></label>
+                <input type="text" id="opds-root-path" title="<?php p($l->t("Enter root directory for OPDS catalog.")); ?>" value="<?php p($_['rootPath']) ?>" /><span class="msg"></span>
+        </div>
+	<div>
+                <label for="opds-file-types"><?php p($l->t('Supported extensions:')) ?></label>
+                <input type="text" id="opds-file-types" title="<?php p($l->t("Enter list of comma-separated extensions (eg. pdf,epub,doc,txt). Leave blank to publish all file types.")); ?>" value="<?php p($_['fileTypes']) ?>" />
+        </div>
+	<div>
+                <input type="button" id="opds-clear-bookshelf" value="<?php p($l -> t('Clear Bookshelf')); ?>" />
+                <input type="button" id="opds-really-clear-bookshelf" title="<?php p($l->t("Clear list of downloaded books from bookshelf. This only clears the list, it does not delete any books.")); ?>" value="<?php p($l -> t('Yes, I really want to clear my personal bookshelf')); ?>" hidden />
+                <input type="button" id="opds-dont-clear-bookshelf" value="<?php p($l -> t('No, I do not want to clear my bookshelf')); ?>" hidden />
+		<span class="clr"></span>
+		<div>
+			<span id="opds-book-count"><?php p($l->t('There are %s books on your personal bookshelf', array($_['bookshelf-count']))) ?></span>&nbsp;
+		</div>
+        </div>
+</div>
+