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1
<?php
2
/**
3
 * COPS (Calibre OPDS PHP Server) class file
4
 *
5
 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
6
 * @author     Sébastien Lucas <[email protected]>
7
 */
8
9
require_once 'config.php';
10
11
define ('VERSION', '1.0.0RC4');
12
define ('DB', 'db');
13
date_default_timezone_set($config['default_timezone']);
14
15
16
function useServerSideRendering()
17
{
18 3
    global $config;
19 3
    return preg_match('/' . $config['cops_server_side_render'] . '/', $_SERVER['HTTP_USER_AGENT']);
20
}
21
22
function serverSideRender($data)
23
{
24
    // Get the templates
25 2
    $theme = getCurrentTemplate ();
26 2
    $header = file_get_contents('templates/' . $theme . '/header.html');
27 2
    $footer = file_get_contents('templates/' . $theme . '/footer.html');
28 2
    $main = file_get_contents('templates/' . $theme . '/main.html');
29 2
    $bookdetail = file_get_contents('templates/' . $theme . '/bookdetail.html');
30 2
    $page = file_get_contents('templates/' . $theme . '/page.html');
31
32
    // Generate the function for the template
33 2
    $template = new doT ();
34 2
    $dot = $template->template ($page, array ('bookdetail' => $bookdetail,
35 2
                                              'header' => $header,
36 2
                                              'footer' => $footer,
37 2
                                              'main' => $main));
38
    // If there is a syntax error in the function created
39
    // $dot will be equal to FALSE
40 2
    if (!$dot) {
41
        return FALSE;
42
    }
43
    // Execute the template
44 2
    if (!empty ($data)) {
45
        return $dot ($data);
46
    }
47
48 2
    return NULL;
49
}
50
51
function getQueryString()
52
{
53 18
    if (isset($_SERVER['QUERY_STRING'])) {
54 16
        return $_SERVER['QUERY_STRING'];
55
    }
56 2
    return "";
57
}
58
59
function notFound()
60
{
61
    header($_SERVER['SERVER_PROTOCOL'].' 404 Not Found');
62
    header('Status: 404 Not Found');
63
64
    $_SERVER['REDIRECT_STATUS'] = 404;
65
}
66
67
function getURLParam($name, $default = NULL)
68
{
69 101
    if (!empty ($_GET) && isset($_GET[$name]) && $_GET[$name] != '') {
70 24
        return $_GET[$name];
71
    }
72 101
    return $default;
73
}
74
75
function getCurrentOption($option)
76
{
77 87
    global $config;
78 87
    if (isset($_COOKIE[$option])) {
79 2
        if (isset($config ['cops_' . $option]) && is_array ($config ['cops_' . $option])) {
80
            return explode (',', $_COOKIE[$option]);
81
        } else {
82 2
            return $_COOKIE[$option];
83
        }
84
    }
85 85
    if (isset($config ['cops_' . $option])) {
86 85
        return $config ['cops_' . $option];
87
    }
88
89
    return '';
90
}
91
92
function getCurrentCss()
93
{
94 2
    return 'templates/' . getCurrentTemplate () . '/styles/style-' . getCurrentOption('style') . '.css';
95
}
96
97
function getCurrentTemplate()
98
{
99 4
    return getCurrentOption ('template');
100
}
101
102
function getUrlWithVersion($url)
103
{
104 51
    return $url . '?v=' . VERSION;
105
}
106
107
function xml2xhtml($xml)
108
{
109
    return preg_replace_callback('#<(\w+)([^>]*)\s*/>#s', function($m) {
110 35
        $xhtml_tags = array('br', 'hr', 'input', 'frame', 'img', 'area', 'link', 'col', 'base', 'basefont', 'param');
111 35
        if (in_array($m[1], $xhtml_tags)) {
112 33
            return '<' . $m[1] . $m[2] . ' />';
113
        } else {
114 35
            return '<' . $m[1] . $m[2] . '></' . $m[1] . '>';
115
        }
116 35
    }, $xml);
117
}
118
119
function display_xml_error($error)
120
{
121
    $return = '';
122
    $return .= str_repeat('-', $error->column) . "^\n";
123
124
    switch ($error->level) {
125
        case LIBXML_ERR_WARNING:
126
            $return .= 'Warning ' . $error->code . ': ';
127
            break;
128
         case LIBXML_ERR_ERROR:
129
            $return .= 'Error ' . $error->code . ': ';
130
            break;
131
        case LIBXML_ERR_FATAL:
132
            $return .= 'Fatal Error ' . $error->code . ': ';
133
            break;
134
    }
135
136
    $return .= trim($error->message) .
137
               "\n  Line: " . $error->line .
138
               "\n  Column: " . $error->column;
139
140
    if ($error->file) {
141
        $return .= "\n  File: " . $error->file;
142
    }
143
144
    return "$return\n\n--------------------------------------------\n\n";
145
}
146
147
function are_libxml_errors_ok()
148
{
149 35
    $errors = libxml_get_errors();
150
151 35
    foreach ($errors as $error) {
152
        if ($error->code == 801) return false;
153 35
    }
154 35
    return true;
155
}
156
157
function html2xhtml($html)
158
{
159 35
    $doc = new DOMDocument();
160 35
    libxml_use_internal_errors(true);
161
162 35
    $doc->loadHTML('<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body>' .
163 35
                        $html  . '</body></html>'); // Load the HTML
164 35
    $output = $doc->saveXML($doc->documentElement); // Transform to an Ansi xml stream
165 35
    $output = xml2xhtml($output);
166 35
    if (preg_match ('#<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></meta></head><body>(.*)</body></html>#ms', $output, $matches)) {
167 35
        $output = $matches [1]; // Remove <html><body>
168 35
    }
169
    /*
170
    // In case of error with summary, use it to debug
171
    $errors = libxml_get_errors();
172
173
    foreach ($errors as $error) {
174
        $output .= display_xml_error($error);
175
    }
176
    */
177
178 35
    if (!are_libxml_errors_ok ()) $output = 'HTML code not valid.';
179
180 35
    libxml_use_internal_errors(false);
181 35
    return $output;
182
}
183
184
/**
185
 * This method is a direct copy-paste from
186
 * http://tmont.com/blargh/2010/1/string-format-in-php
187
 */
188
function str_format($format)
189
{
190 94
    $args = func_get_args();
191 94
    $format = array_shift($args);
192
193 94
    preg_match_all('/(?=\{)\{(\d+)\}(?!\})/', $format, $matches, PREG_OFFSET_CAPTURE);
194 94
    $offset = 0;
195 94
    foreach ($matches[1] as $data) {
196 94
        $i = $data[0];
197 94
        $format = substr_replace($format, @$args[$i], $offset + $data[1] - 1, 2 + strlen($i));
198 94
        $offset += strlen(@$args[$i]) - 2 - strlen($i);
199 94
    }
200
201 94
    return $format;
202
}
203
204
/**
205
 * Get all accepted languages from the browser and put them in a sorted array
206
 * languages id are normalized : fr-fr -> fr_FR
207
 * @return array of languages
208
 */
209
function getAcceptLanguages()
210
{
211 16
    $langs = array();
212
213 16
    if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
214
        // break up string into pieces (languages and q factors)
215 16
        $accept = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
216 16 View Code Duplication
        if (preg_match('/^(\w{2})-\w{2}$/', $accept, $matches)) {
217
            // Special fix for IE11 which send fr-FR and nothing else
218 3
            $accept = $accept . ',' . $matches[1] . ';q=0.8';
219 3
        }
220 16
        preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $accept, $lang_parse);
221
222 16
        if (count($lang_parse[1])) {
223 16
            $langs = array();
224 16
            foreach ($lang_parse[1] as $lang) {
225
                // Format the language code (not standard among browsers)
226 16
                if (strlen($lang) == 5) {
227 11
                    $lang = str_replace('-', '_', $lang);
228 11
                    $splitted = preg_split('/_/', $lang);
229 11
                    $lang = $splitted[0] . '_' . strtoupper($splitted[1]);
230 11
                }
231 16
                array_push($langs, $lang);
232 16
            }
233
            // create a list like "en" => 0.8
234 16
            $langs = array_combine($langs, $lang_parse[4]);
235
236
            // set default to 1 for any without q factor
237 16
            foreach ($langs as $lang => $val) {
238 16
                if ($val === '') $langs[$lang] = 1;
239 16
            }
240
241
            // sort list based on value
242 16
            arsort($langs, SORT_NUMERIC);
243 16
        }
244 16
    }
245
246 16
    return $langs;
247
}
248
249
/**
250
 * Find the best translation file possible based on the accepted languages
251
 * @return array of language and language file
252
 */
253
function getLangAndTranslationFile()
254
{
255 17
    global $config;
256 17
    $langs = array();
257 17
    $lang = 'en';
258 17
    if (!empty($config['cops_language'])) {
259
        $lang = $config['cops_language'];
260
    }
261 17
    elseif (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
262 16
        $langs = getAcceptLanguages();
263 16
    }
264
    //echo var_dump($langs);
265 17
    $lang_file = NULL;
266 17
    foreach ($langs as $language => $val) {
267 16
        $temp_file = dirname(__FILE__). '/lang/Localization_' . $language . '.json';
268 16
        if (file_exists($temp_file)) {
269 16
            $lang = $language;
270 16
            $lang_file = $temp_file;
271 16
            break;
272
        }
273 17
    }
274 17
    if (empty ($lang_file)) {
275 3
        $lang_file = dirname(__FILE__). '/lang/Localization_' . $lang . '.json';
276 3
    }
277 17
    return array($lang, $lang_file);
278
}
279
280
/**
281
 * This method is based on this page
282
 * http://www.mind-it.info/2010/02/22/a-simple-approach-to-localization-in-php/
283
 */
284
function localize($phrase, $count=-1, $reset=false)
285
{
286 114
    global $config;
287 114
    if ($count == 0)
288 114
        $phrase .= '.none';
289 114
    if ($count == 1)
290 114
        $phrase .= '.one';
291 114
    if ($count > 1)
292 114
        $phrase .= '.many';
293
294
    /* Static keyword is used to ensure the file is loaded only once */
295 114
    static $translations = NULL;
296 114
    if ($reset) {
297 16
        $translations = NULL;
298 16
    }
299
    /* If no instance of $translations has occured load the language file */
300 114
    if (is_null($translations)) {
301 17
        $lang_file_en = NULL;
302 17
        list ($lang, $lang_file) = getLangAndTranslationFile();
303 17
        if ($lang != 'en') {
304 1
            $lang_file_en = dirname(__FILE__). '/lang/' . 'Localization_en.json';
305 1
        }
306
307 17
        $lang_file_content = file_get_contents($lang_file);
308
        /* Load the language file as a JSON object and transform it into an associative array */
309 17
        $translations = json_decode($lang_file_content, true);
310
311
        /* Clean the array of all unfinished translations */
312 17
        foreach (array_keys ($translations) as $key) {
313 17
            if (preg_match ('/^##TODO##/', $key)) {
314
                unset ($translations [$key]);
315
            }
316 17
        }
317
        if ($lang_file_en)
0 ignored issues
show
Bug Best Practice introduced by
The expression $lang_file_en of type string|null is loosely compared to true; this is ambiguous if the string can be empty. You might want to explicitly use !== null instead.

In PHP, under loose comparison (like ==, or !=, or switch conditions), values of different types might be equal.

For string values, the empty string '' is a special case, in particular the following results might be unexpected:

''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
Loading history...
318 17
        {
319 1
            $lang_file_content = file_get_contents($lang_file_en);
320 1
            $translations_en = json_decode($lang_file_content, true);
321 1
            $translations = array_merge ($translations_en, $translations);
322 1
        }
323 17
    }
324 114
    if (array_key_exists ($phrase, $translations)) {
325 114
        return $translations[$phrase];
326
    }
327 1
    return $phrase;
328
}
329
330
function addURLParameter($urlParams, $paramName, $paramValue)
331
{
332 58
    if (empty ($urlParams)) {
333 48
        $urlParams = '';
334 48
    }
335 58
    $start = '';
336 58
    if (preg_match ('#^\?(.*)#', $urlParams, $matches)) {
337 15
        $start = '?';
338 15
        $urlParams = $matches[1];
339 15
    }
340 58
    $params = array();
341 58
    parse_str($urlParams, $params);
342 58
    if (empty ($paramValue) && $paramValue != 0) {
343
        unset ($params[$paramName]);
344
    } else {
345 58
        $params[$paramName] = $paramValue;
346
    }
347 58
    return $start . http_build_query($params);
348
}
349
350
function useNormAndUp()
351
{
352 113
    global $config;
353 113
    return $config ['cops_normalized_search'] == '1';
354
}
355
356
function normalizeUtf8String($s)
357
{
358 8
    include_once 'transliteration.php';
359 8
    return _transliteration_process($s);
360
}
361
362
function normAndUp($s)
363
{
364 7
    return mb_strtoupper(normalizeUtf8String($s), 'UTF-8');
365
}
366