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base.php
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<?php
/**
* COPS (Calibre OPDS PHP Server) class file
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Sébastien Lucas <[email protected]>
*/
define ("VERSION", "0.5.0");
define ("DB", "db");
date_default_timezone_set($config['default_timezone']);
function getURLParam ($name, $default = NULL) {
if (!empty ($_GET) && isset($_GET[$name])) {
return $_GET[$name];
}
return $default;
}
function getUrlWithVersion ($url) {
return $url . "?v=" . VERSION;
}
function xml2xhtml($xml) {
return preg_replace_callback('#<(\w+)([^>]*)\s*/>#s', create_function('$m', '
$xhtml_tags = array("br", "hr", "input", "frame", "img", "area", "link", "col", "base", "basefont", "param");
return in_array($m[1], $xhtml_tags) ? "<$m[1]$m[2] />" : "<$m[1]$m[2]></$m[1]>";
'), $xml);
}
function display_xml_error($error)
{
$return .= str_repeat('-', $error->column) . "^\n";
switch ($error->level) {
case LIBXML_ERR_WARNING:
$return .= "Warning $error->code: ";
break;
case LIBXML_ERR_ERROR:
$return .= "Error $error->code: ";
break;
case LIBXML_ERR_FATAL:
$return .= "Fatal Error $error->code: ";
break;
}
$return .= trim($error->message) .
"\n Line: $error->line" .
"\n Column: $error->column";
if ($error->file) {
$return .= "\n File: $error->file";
}
return "$return\n\n--------------------------------------------\n\n";
}
function are_libxml_errors_ok ()
{
$errors = libxml_get_errors();
foreach ($errors as $error) {
if ($error->code == 801) return false;
}
return true;
}
function html2xhtml ($html) {
$doc = new DOMDocument();
libxml_use_internal_errors(true);
$doc->loadHTML('<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body>' .
$html . '</body></html>'); // Load the HTML
$output = $doc->saveXML($doc->documentElement); // Transform to an Ansi xml stream
$output = xml2xhtml($output);
if (preg_match ('#<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></meta></head><body>(.*)</body></html>#ms', $output, $matches)) {
$output = $matches [1]; // Remove <html><body>
}
/*
// In case of error with summary, use it to debug
$errors = libxml_get_errors();
foreach ($errors as $error) {
$output .= display_xml_error($error);
}
*/
if (!are_libxml_errors_ok ()) $output = "HTML code not valid.";
libxml_use_internal_errors(false);
return $output;
}
/**
* This method is a direct copy-paste from
* http://tmont.com/blargh/2010/1/string-format-in-php
*/
function str_format($format) {
$args = func_get_args();
$format = array_shift($args);
preg_match_all('/(?=\{)\{(\d+)\}(?!\})/', $format, $matches, PREG_OFFSET_CAPTURE);
$offset = 0;
foreach ($matches[1] as $data) {
$i = $data[0];
$format = substr_replace($format, @$args[$i], $offset + $data[1] - 1, 2 + strlen($i));
$offset += strlen(@$args[$i]) - 2 - strlen($i);
}
return $format;
}
/**
* This method is based on this page
* http://www.mind-it.info/2010/02/22/a-simple-approach-to-localization-in-php/
*/
function localize($phrase, $count=-1) {
if ($count == 0)
$phrase .= ".none";
if ($count == 1)
$phrase .= ".one";
if ($count > 1)
$phrase .= ".many";
/* Static keyword is used to ensure the file is loaded only once */
static $translations = NULL;
/* If no instance of $translations has occured load the language file */
if (is_null($translations)) {
$lang = "en";
if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE']))
{
$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
}
$lang_file_en = NULL;
$lang_file = 'lang/Localization_' . $lang . '.json';
if (!file_exists($lang_file)) {
$lang_file = 'lang/' . 'Localization_en.json';
}
elseif ($lang != "en") {
$lang_file_en = 'lang/' . 'Localization_en.json';
}
$lang_file_content = file_get_contents($lang_file);
/* Load the language file as a JSON object and transform it into an associative array */
$translations = json_decode($lang_file_content, true);
if ($lang_file_en)
{
$lang_file_content = file_get_contents($lang_file_en);
$translations_en = json_decode($lang_file_content, true);
$translations = array_merge ($translations_en, $translations);
}
}
return $translations[$phrase];
}
function addURLParameter($urlParams, $paramName, $paramValue) {
$start = "";
if (preg_match ("#^\?(.*)#", $urlParams, $matches)) {
$start = "?";
$urlParams = $matches[1];
}
$params = array();
parse_str($urlParams, $params);
if (empty ($paramValue) && $paramValue != 0) {
unset ($params[$paramName]);
} else {
$params[$paramName] = $paramValue;
}
return $start . http_build_query($params);
}
class Link
{
const OPDS_THUMBNAIL_TYPE = "http://opds-spec.org/image/thumbnail";
const OPDS_IMAGE_TYPE = "http://opds-spec.org/image";
const OPDS_ACQUISITION_TYPE = "http://opds-spec.org/acquisition";
const OPDS_NAVIGATION_TYPE = "application/atom+xml;profile=opds-catalog;kind=navigation";
const OPDS_PAGING_TYPE = "application/atom+xml;profile=opds-catalog;kind=acquisition";
public $href;
public $type;
public $rel;
public $title;
public $facetGroup;
public $activeFacet;
public function __construct($phref, $ptype, $prel = NULL, $ptitle = NULL, $pfacetGroup = NULL, $pactiveFacet = FALSE) {
$this->href = $phref;
$this->type = $ptype;
$this->rel = $prel;
$this->title = $ptitle;
$this->facetGroup = $pfacetGroup;
$this->activeFacet = $pactiveFacet;
}
public function hrefXhtml () {
return str_replace ("&", "&", $this->href);
}
}
class LinkNavigation extends Link
{
public function __construct($phref, $prel = NULL, $ptitle = NULL) {
parent::__construct ($phref, Link::OPDS_NAVIGATION_TYPE, $prel, $ptitle);
if (!is_null (GetUrlParam (DB))) $this->href = addURLParameter ($this->href, DB, GetUrlParam (DB));
if (!preg_match ("#^\?(.*)#", $this->href) && !empty ($this->href)) $this->href = "?" . $this->href;
if (preg_match ("/bookdetail.php/", $_SERVER["SCRIPT_NAME"])) {
$this->href = "index.php" . $this->href;
} else {
$this->href = $_SERVER["SCRIPT_NAME"] . $this->href;
}
}
}
class LinkFacet extends Link
{
public function __construct($phref, $ptitle = NULL, $pfacetGroup = NULL, $pactiveFacet = FALSE) {
parent::__construct ($phref, Link::OPDS_PAGING_TYPE, "http://opds-spec.org/facet", $ptitle, $pfacetGroup, $pactiveFacet);
if (!is_null (GetUrlParam (DB))) $this->href = addURLParameter ($this->href, DB, GetUrlParam (DB));
$this->href = $_SERVER["SCRIPT_NAME"] . $this->href;
}
}
class Entry
{
public $title;
public $id;
public $content;
public $contentType;
public $linkArray;
public $localUpdated;
private static $updated = NULL;
public static $icons = array(
Author::ALL_AUTHORS_ID => 'images/author.png',
Serie::ALL_SERIES_ID => 'images/serie.png',
Book::ALL_RECENT_BOOKS_ID => 'images/recent.png',
Tag::ALL_TAGS_ID => 'images/tag.png',
Language::ALL_LANGUAGES_ID => 'images/language.png',
CustomColumn::ALL_CUSTOMS_ID => 'images/tag.png',
"calibre:books$" => 'images/allbook.png',
"calibre:books:letter" => 'images/allbook.png'
);
public function getUpdatedTime () {
if (!is_null ($this->localUpdated)) {
return date (DATE_ATOM, $this->localUpdated);
}
if (is_null (self::$updated)) {
self::$updated = time();
}
return date (DATE_ATOM, self::$updated);
}
public function __construct($ptitle, $pid, $pcontent, $pcontentType, $plinkArray) {
global $config;
$this->title = $ptitle;
$this->id = $pid;
$this->content = $pcontent;
$this->contentType = $pcontentType;
$this->linkArray = $plinkArray;
if ($config['cops_show_icons'] == 1)
{
foreach (self::$icons as $reg => $image)
{
if (preg_match ("/" . $reg . "/", $pid)) {
array_push ($this->linkArray, new Link (getUrlWithVersion ($image), "image/png", Link::OPDS_THUMBNAIL_TYPE));
break;
}
}
}
if (!is_null (GetUrlParam (DB))) $this->id = GetUrlParam (DB) . ":" . $this->id;
}
}
class EntryBook extends Entry
{
public $book;
public function __construct($ptitle, $pid, $pcontent, $pcontentType, $plinkArray, $pbook) {
parent::__construct ($ptitle, $pid, $pcontent, $pcontentType, $plinkArray);
$this->book = $pbook;
$this->localUpdated = $pbook->timestamp;
}
public function getCoverThumbnail () {
foreach ($this->linkArray as $link) {
if ($link->rel == Link::OPDS_THUMBNAIL_TYPE)
return $link->hrefXhtml ();
}
return null;
}
public function getCover () {
foreach ($this->linkArray as $link) {
if ($link->rel == Link::OPDS_IMAGE_TYPE)
return $link->hrefXhtml ();
}
return null;
}
}
class Page
{
public $title;
public $subtitle = "";
public $idPage;
public $idGet;
public $query;
public $favicon;
public $n;
public $totalNumber = -1;
public $entryArray = array();
public static function getPage ($pageId, $id, $query, $n)
{
switch ($pageId) {
case Base::PAGE_ALL_AUTHORS :
return new PageAllAuthors ($id, $query, $n);
case Base::PAGE_AUTHORS_FIRST_LETTER :
return new PageAllAuthorsLetter ($id, $query, $n);
case Base::PAGE_AUTHOR_DETAIL :
return new PageAuthorDetail ($id, $query, $n);
case Base::PAGE_ALL_TAGS :
return new PageAllTags ($id, $query, $n);
case Base::PAGE_TAG_DETAIL :
return new PageTagDetail ($id, $query, $n);
case Base::PAGE_ALL_LANGUAGES :
return new PageAllLanguages ($id, $query, $n);
case Base::PAGE_LANGUAGE_DETAIL :
return new PageLanguageDetail ($id, $query, $n);
case Base::PAGE_ALL_CUSTOMS :
return new PageAllCustoms ($id, $query, $n);
case Base::PAGE_CUSTOM_DETAIL :
return new PageCustomDetail ($id, $query, $n);
case Base::PAGE_ALL_SERIES :
return new PageAllSeries ($id, $query, $n);
case Base::PAGE_ALL_BOOKS :
return new PageAllBooks ($id, $query, $n);
case Base::PAGE_ALL_BOOKS_LETTER:
return new PageAllBooksLetter ($id, $query, $n);
case Base::PAGE_ALL_RECENT_BOOKS :
return new PageRecentBooks ($id, $query, $n);
case Base::PAGE_SERIE_DETAIL :
return new PageSerieDetail ($id, $query, $n);
case Base::PAGE_OPENSEARCH_QUERY :
return new PageQueryResult ($id, $query, $n);
case Base::PAGE_BOOK_DETAIL :
return new PageBookDetail ($id, $query, $n);
case Base::PAGE_ABOUT :
return new PageAbout ($id, $query, $n);
default:
$page = new Page ($id, $query, $n);
$page->idPage = "cops:catalog";
return $page;
}
}
public function __construct($pid, $pquery, $pn) {
global $config;
$this->idGet = $pid;
$this->query = $pquery;
$this->n = $pn;
$this->favicon = $config['cops_icon'];
}
public function InitializeContent ()
{
global $config;
$this->title = $config['cops_title_default'];
$this->subtitle = $config['cops_subtitle_default'];
$database = GetUrlParam (DB);
if (is_array ($config['calibre_directory']) && is_null ($database)) {
$i = 0;
foreach ($config['calibre_directory'] as $key => $value) {
array_push ($this->entryArray, new Entry ($key, "{$i}:cops:catalog",
"", "text",
array ( new LinkNavigation ("?" . DB . "={$i}"))));
$i++;
}
} else {
array_push ($this->entryArray, Author::getCount());
$series = Serie::getCount();
if (!is_null ($series)) array_push ($this->entryArray, $series);
$tags = Tag::getCount();
if (!is_null ($tags)) array_push ($this->entryArray, $tags);
$languages = Language::getCount();
if (!is_null ($languages)) array_push ($this->entryArray, $languages);
foreach ($config['cops_calibre_custom_column'] as $lookup) {
$customId = CustomColumn::getCustomId ($lookup);
if (!is_null ($customId)) {
array_push ($this->entryArray, CustomColumn::getCount($customId));
}
}
$this->entryArray = array_merge ($this->entryArray, Book::getCount());
if (!is_null ($database)) $this->title = Base::getDbName ();
}
}
public function isPaginated ()
{
global $config;
return ($config['cops_max_item_per_page'] != -1 &&
$this->totalNumber != -1 &&
$this->totalNumber > $config['cops_max_item_per_page']);
}
public function getNextLink ()
{
global $config;
$currentUrl = $_SERVER['QUERY_STRING'];
$currentUrl = preg_replace ("/\&n=.*?$/", "", "?" . $_SERVER['QUERY_STRING']);
if (($this->n) * $config['cops_max_item_per_page'] < $this->totalNumber) {
return new LinkNavigation ($currentUrl . "&n=" . ($this->n + 1), "next", "Page suivante");
}
return NULL;
}
public function getPrevLink ()
{
global $config;
$currentUrl = $_SERVER['QUERY_STRING'];
$currentUrl = preg_replace ("/\&n=.*?$/", "", "?" . $_SERVER['QUERY_STRING']);
if ($this->n > 1) {
return new LinkNavigation ($currentUrl . "&n=" . ($this->n - 1), "previous", "Page precedente");
}
return NULL;
}
public function getMaxPage ()
{
global $config;
return ceil ($this->totalNumber / $config['cops_max_item_per_page']);
}
public function containsBook ()
{
if (count ($this->entryArray) == 0) return false;
if (get_class ($this->entryArray [0]) == "EntryBook") return true;
return false;
}
}
class PageAllAuthors extends Page
{
public function InitializeContent ()
{
global $config;
$this->title = localize("authors.title");
if ($config['cops_author_split_first_letter'] == 1) {
$this->entryArray = Author::getAllAuthorsByFirstLetter();
}
else {
$this->entryArray = Author::getAllAuthors();
}
$this->idPage = Author::ALL_AUTHORS_ID;
}
}
class PageAllAuthorsLetter extends Page
{
public function InitializeContent ()
{
global $config;
$this->idPage = Author::getEntryIdByLetter ($this->idGet);
$this->entryArray = Author::getAuthorsByStartingLetter ($this->idGet);
$this->title = str_format (localize ("splitByLetter.letter"), str_format (localize ("authorword", count ($this->entryArray)), count ($this->entryArray)), $this->idGet);
}
}
class PageAuthorDetail extends Page
{
public function InitializeContent ()
{
$author = Author::getAuthorById ($this->idGet);
$this->idPage = $author->getEntryId ();
$this->title = $author->name;
list ($this->entryArray, $this->totalNumber) = Book::getBooksByAuthor ($this->idGet, $this->n);
}
}
class PageAllTags extends Page
{
public function InitializeContent ()
{
$this->title = localize("tags.title");
$this->entryArray = Tag::getAllTags();
$this->idPage = Tag::ALL_TAGS_ID;
}
}
class PageAllLanguages extends Page
{
public function InitializeContent ()
{
$this->title = localize("languages.title");
$this->entryArray = Language::getAllLanguages();
$this->idPage = Language::ALL_LANGUAGES_ID;
}
}
class PageCustomDetail extends Page
{
public function InitializeContent ()
{
$customId = getURLParam ("custom", NULL);
$custom = CustomColumn::getCustomById ($customId, $this->idGet);
$this->idPage = $custom->getEntryId ();
$this->title = $custom->name;
list ($this->entryArray, $this->totalNumber) = Book::getBooksByCustom ($customId, $this->idGet, $this->n);
}
}
class PageAllCustoms extends Page
{
public function InitializeContent ()
{
$customId = getURLParam ("custom", NULL);
$this->title = CustomColumn::getAllTitle ($customId);
$this->entryArray = CustomColumn::getAllCustoms($customId);
$this->idPage = CustomColumn::getAllCustomsId ($customId);
}
}
class PageTagDetail extends Page
{
public function InitializeContent ()
{
$tag = Tag::getTagById ($this->idGet);
$this->idPage = $tag->getEntryId ();
$this->title = $tag->name;
list ($this->entryArray, $this->totalNumber) = Book::getBooksByTag ($this->idGet, $this->n);
}
}
class PageLanguageDetail extends Page
{
public function InitializeContent ()
{
$language = Language::getLanguageById ($this->idGet);
$this->idPage = $language->getEntryId ();
$this->title = $language->name;
list ($this->entryArray, $this->totalNumber) = Book::getBooksByLanguage ($this->idGet, $this->n);
}
}
class PageAllSeries extends Page
{
public function InitializeContent ()
{
$this->title = localize("series.title");
$this->entryArray = Serie::getAllSeries();
$this->idPage = Serie::ALL_SERIES_ID;
}
}
class PageSerieDetail extends Page
{
public function InitializeContent ()
{
$serie = Serie::getSerieById ($this->idGet);
$this->title = $serie->name;
list ($this->entryArray, $this->totalNumber) = Book::getBooksBySeries ($this->idGet, $this->n);
$this->idPage = $serie->getEntryId ();
}
}
class PageAllBooks extends Page
{
public function InitializeContent ()
{
$this->title = localize ("allbooks.title");
$this->entryArray = Book::getAllBooks ();
$this->idPage = Book::ALL_BOOKS_ID;
}
}
class PageAllBooksLetter extends Page
{
public function InitializeContent ()
{
list ($this->entryArray, $this->totalNumber) = Book::getBooksByStartingLetter ($this->idGet, $this->n);
$this->idPage = Book::getEntryIdByLetter ($this->idGet);
$count = $this->totalNumber;
if ($count == -1)
$count = count ($this->entryArray);
$this->title = str_format (localize ("splitByLetter.letter"), str_format (localize ("bookword", $count), $count), $this->idGet);
}
}
class PageRecentBooks extends Page
{
public function InitializeContent ()
{
$this->title = localize ("recent.title");
$this->entryArray = Book::getAllRecentBooks ();
$this->idPage = Book::ALL_RECENT_BOOKS_ID;
}
}
class PageQueryResult extends Page
{
public function InitializeContent ()
{
global $config;
$this->title = str_format (localize ("search.result"), $this->query);
$currentPage = getURLParam ("current", NULL);
// Special case when we are doing a search and no database is selected
if (is_array ($config['calibre_directory']) && is_null (GetUrlParam (DB))) {
$i = 0;
foreach ($config['calibre_directory'] as $key => $value) {
Base::clearDb ();
list ($array, $totalNumber) = Book::getBooksByQuery ($this->query, $this->n, $i);
array_push ($this->entryArray, new Entry ($key, DB . ":query:{$i}",
str_format (localize ("bookword", count($array)), count($array)), "text",
array ( new LinkNavigation ("?" . DB . "={$i}&page=9&query=" . $this->query))));
$i++;
}
return;
}
switch ($currentPage) {
case Base::PAGE_ALL_AUTHORS :
case Base::PAGE_AUTHORS_FIRST_LETTER :
$this->entryArray = Author::getAuthorsByStartingLetter ('%' . $this->query);
break;
default:
list ($this->entryArray, $this->totalNumber) = Book::getBooksByQuery ($this->query, $this->n);
}
}
}
class PageBookDetail extends Page
{
public function InitializeContent ()
{
$book = Book::getBookById ($this->idGet);
$this->title = $book->title;
}
}
class PageAbout extends Page
{
public function InitializeContent ()
{
$this->title = localize ("about.title");
}
}
abstract class Base
{
const PAGE_INDEX = "index";
const PAGE_ALL_AUTHORS = "1";
const PAGE_AUTHORS_FIRST_LETTER = "2";
const PAGE_AUTHOR_DETAIL = "3";
const PAGE_ALL_BOOKS = "4";
const PAGE_ALL_BOOKS_LETTER = "5";
const PAGE_ALL_SERIES = "6";
const PAGE_SERIE_DETAIL = "7";
const PAGE_OPENSEARCH = "8";
const PAGE_OPENSEARCH_QUERY = "9";
const PAGE_ALL_RECENT_BOOKS = "10";
const PAGE_ALL_TAGS = "11";
const PAGE_TAG_DETAIL = "12";
const PAGE_BOOK_DETAIL = "13";
const PAGE_ALL_CUSTOMS = "14";
const PAGE_CUSTOM_DETAIL = "15";
const PAGE_ABOUT = "16";
const PAGE_ALL_LANGUAGES = "17";
const PAGE_LANGUAGE_DETAIL = "18";
const COMPATIBILITY_XML_ALDIKO = "aldiko";
private static $db = NULL;
public static function getDbList () {
global $config;
if (is_array ($config['calibre_directory'])) {
return $config['calibre_directory'];
} else {
return array ("" => $config['calibre_directory']);
}
}
public static function getDbName ($database = NULL) {
global $config;
if (is_array ($config['calibre_directory'])) {
if (is_null ($database)) $database = GetUrlParam (DB, 0);
$array = array_keys ($config['calibre_directory']);
return $array[$database];
}
return "";
}
public static function getDbDirectory ($database = NULL) {
global $config;
if (is_array ($config['calibre_directory'])) {
if (is_null ($database)) $database = GetUrlParam (DB, 0);
$array = array_values ($config['calibre_directory']);
return $array[$database];
}
return $config['calibre_directory'];
}
public static function getDbFileName ($database = NULL) {
return self::getDbDirectory ($database) .'metadata.db';
}
public static function getDb ($database = NULL) {
global $config;
if (is_null (self::$db)) {
try {
self::$db = new PDO('sqlite:'. self::getDbFileName ($database));
} catch (Exception $e) {
header("location: checkconfig.php?err=1");
exit();
}
}
return self::$db;
}
public static function clearDb () {
self::$db = NULL;
}
public static function executeQuery($query, $columns, $filter, $params, $n, $database = NULL) {
global $config;
$totalResult = -1;
if ($config['cops_max_item_per_page'] != -1 && $n != -1)
{
// First check total number of results
$result = self::getDb ($database)->prepare (str_format ($query, "count(*)", $filter));
$result->execute ($params);
$totalResult = $result->fetchColumn ();
// Next modify the query and params
$query .= " limit ?, ?";
array_push ($params, ($n - 1) * $config['cops_max_item_per_page'], $config['cops_max_item_per_page']);
}
$result = self::getDb ($database)->prepare(str_format ($query, $columns, $filter));
$result->execute ($params);
return array ($totalResult, $result);
}
}
?>