xref: /plugin/combo/action/router.php (revision ea801fd8623a40cbbf46cb40416f7bada79b0eea)
1c3437056SNickeau<?php
2c3437056SNickeau
3c3437056SNickeau
4c3437056SNickeauuse ComboStrap\DatabasePageRow;
511d09b86Sgerardnicouse ComboStrap\DokuwikiId;
604fd306cSNickeauuse ComboStrap\ExceptionBadArgument;
704fd306cSNickeauuse ComboStrap\ExceptionBadSyntax;
804fd306cSNickeauuse ComboStrap\ExceptionCompile;
904fd306cSNickeauuse ComboStrap\ExceptionSqliteNotAvailable;
1004fd306cSNickeauuse ComboStrap\ExecutionContext;
1104fd306cSNickeauuse ComboStrap\FileSystems;
12c3437056SNickeauuse ComboStrap\HttpResponse;
1304fd306cSNickeauuse ComboStrap\HttpResponseStatus;
14c3437056SNickeauuse ComboStrap\Identity;
15c3437056SNickeauuse ComboStrap\LogUtility;
1604fd306cSNickeauuse ComboStrap\MarkupPath;
1704fd306cSNickeauuse ComboStrap\Meta\Field\AliasType;
18c3437056SNickeauuse ComboStrap\Mime;
19c3437056SNickeauuse ComboStrap\PageId;
20c3437056SNickeauuse ComboStrap\PageRules;
21c3437056SNickeauuse ComboStrap\PageUrlPath;
2282a60d03SNickeauuse ComboStrap\PageUrlType;
2304fd306cSNickeauuse ComboStrap\RouterBestEndPage;
24c3437056SNickeauuse ComboStrap\Site;
2504fd306cSNickeauuse ComboStrap\SiteConfig;
26c3437056SNickeauuse ComboStrap\Sqlite;
2704fd306cSNickeauuse ComboStrap\Web\Url;
2811d09b86Sgerardnicouse ComboStrap\Web\UrlEndpoint;
2954743e42Sgerardnicouse ComboStrap\Web\UrlRewrite;
3004fd306cSNickeauuse ComboStrap\WikiPath;
31c3437056SNickeau
3204fd306cSNickeaurequire_once(__DIR__ . '/../vendor/autoload.php');
33c3437056SNickeau
34c3437056SNickeau/**
35c3437056SNickeau * Class action_plugin_combo_url
36c3437056SNickeau *
37c3437056SNickeau * The actual URL manager
38c3437056SNickeau *
39c3437056SNickeau *
40c3437056SNickeau */
41c3437056SNickeauclass action_plugin_combo_router extends DokuWiki_Action_Plugin
42c3437056SNickeau{
43c3437056SNickeau
44c3437056SNickeau    /**
45c3437056SNickeau     * @deprecated
46c3437056SNickeau     */
47c3437056SNickeau    const URL_MANAGER_ENABLE_CONF = "enableUrlManager";
48c3437056SNickeau    const ROUTER_ENABLE_CONF = "enableRouter";
49c3437056SNickeau
50c3437056SNickeau    // The redirect type
51c3437056SNickeau    const REDIRECT_TRANSPARENT_METHOD = 'transparent'; // was (Id)
52c3437056SNickeau    // For permanent, see https://developers.google.com/search/docs/advanced/crawling/301-redirects
53c3437056SNickeau    const REDIRECT_PERMANENT_METHOD = 'permanent'; // was `Http` (301)
54c3437056SNickeau    const REDIRECT_NOTFOUND_METHOD = "notfound"; // 404 (See other) (when best page name is calculated)
55c3437056SNickeau
56c3437056SNickeau    public const PERMANENT_REDIRECT_CANONICAL = "permanent:redirect";
57c3437056SNickeau
58c3437056SNickeau    // Where the target id value comes from
59c3437056SNickeau    const TARGET_ORIGIN_WELL_KNOWN = 'well-known';
60c3437056SNickeau    const TARGET_ORIGIN_PAGE_RULES = 'pageRules';
61c3437056SNickeau    /**
62c3437056SNickeau     * Named Permalink (canonical)
63c3437056SNickeau     */
64c3437056SNickeau    const TARGET_ORIGIN_CANONICAL = 'canonical';
65c3437056SNickeau    const TARGET_ORIGIN_ALIAS = 'alias';
66c3437056SNickeau    /**
67c3437056SNickeau     * Identifier Permalink (full page id)
68c3437056SNickeau     */
69c3437056SNickeau    const TARGET_ORIGIN_PERMALINK = "permalink";
70c3437056SNickeau    /**
71c3437056SNickeau     * Extended Permalink (abbreviated page id at the end)
72c3437056SNickeau     */
73c3437056SNickeau    const TARGET_ORIGIN_PERMALINK_EXTENDED = "extendedPermalink";
74c3437056SNickeau    const TARGET_ORIGIN_START_PAGE = 'startPage';
75c3437056SNickeau    const TARGET_ORIGIN_BEST_PAGE_NAME = 'bestPageName';
76c3437056SNickeau    const TARGET_ORIGIN_BEST_NAMESPACE = 'bestNamespace';
77c3437056SNickeau    const TARGET_ORIGIN_SEARCH_ENGINE = 'searchEngine';
78c3437056SNickeau    const TARGET_ORIGIN_BEST_END_PAGE_NAME = 'bestEndPageName';
79c3437056SNickeau    const TARGET_ORIGIN_SHADOW_BANNED = "shadowBanned";
80c3437056SNickeau
81c3437056SNickeau
82c3437056SNickeau    // The constant parameters
83c3437056SNickeau    const GO_TO_SEARCH_ENGINE = 'GoToSearchEngine';
84c3437056SNickeau    const GO_TO_BEST_NAMESPACE = 'GoToBestNamespace';
85c3437056SNickeau    const GO_TO_BEST_PAGE_NAME = 'GoToBestPageName';
86c3437056SNickeau    const GO_TO_BEST_END_PAGE_NAME = 'GoToBestEndPageName';
87c3437056SNickeau    const GO_TO_NS_START_PAGE = 'GoToNsStartPage';
88c3437056SNickeau    const GO_TO_EDIT_MODE = 'GoToEditMode';
89c3437056SNickeau    const NOTHING = 'Nothing';
90c3437056SNickeau
91c3437056SNickeau    /** @var string - a name used in log and other places */
92c3437056SNickeau    const NAME = 'Url Manager';
93c3437056SNickeau    const CANONICAL = 'router';
94c3437056SNickeau    const PAGE_404 = "<html lang=\"en\"><body></body></html>";
95c3437056SNickeau    const REFRESH_HEADER_NAME = "Refresh";
96c3437056SNickeau    const REFRESH_HEADER_PREFIX = self::REFRESH_HEADER_NAME . ': 0;url=';
9704fd306cSNickeau    const LOCATION_HEADER_PREFIX = HttpResponse::LOCATION_HEADER_NAME . ": ";
98c3437056SNickeau    public const URL_MANAGER_NAME = "Router";
99c3437056SNickeau
100c3437056SNickeau
101c3437056SNickeau    /**
102c3437056SNickeau     * @var PageRules
103c3437056SNickeau     */
104c3437056SNickeau    private $pageRules;
105c3437056SNickeau
106c3437056SNickeau
107c3437056SNickeau    function __construct()
108c3437056SNickeau    {
109c3437056SNickeau        // enable direct access to language strings
110c3437056SNickeau        // ie $this->lang
111c3437056SNickeau        $this->setupLocale();
112c3437056SNickeau
113c3437056SNickeau    }
114c3437056SNickeau
115c3437056SNickeau    /**
11604fd306cSNickeau     * @param string $refreshHeader
117c3437056SNickeau     * @return false|string
118c3437056SNickeau     */
11904fd306cSNickeau    public static function getUrlFromRefresh(string $refreshHeader)
120c3437056SNickeau    {
121c3437056SNickeau        return substr($refreshHeader, strlen(action_plugin_combo_router::REFRESH_HEADER_PREFIX));
122c3437056SNickeau    }
123c3437056SNickeau
124c3437056SNickeau    public static function getUrlFromLocation($refreshHeader)
125c3437056SNickeau    {
126c3437056SNickeau        return substr($refreshHeader, strlen(action_plugin_combo_router::LOCATION_HEADER_PREFIX));
127c3437056SNickeau    }
128c3437056SNickeau
129c3437056SNickeau    /**
130c3437056SNickeau     * @return array|mixed|string|string[]
131c3437056SNickeau     *
132c3437056SNickeau     * Unfortunately, DOKUWIKI_STARTED is not the first event
133c3437056SNickeau     * The id may have been changed by
134c3437056SNickeau     * {@link action_plugin_combo_metalang::load_lang()}
135c3437056SNickeau     * function, that's why we have this function
136c3437056SNickeau     * to get the original requested id
137c3437056SNickeau     */
138c3437056SNickeau    private static function getOriginalIdFromRequest()
139c3437056SNickeau    {
140f49666c9Sgerardnico        $originalId = $_GET["id"] ?? null;
141f49666c9Sgerardnico        if ($originalId === null) {
142f49666c9Sgerardnico            return null;
143f49666c9Sgerardnico        }
14404fd306cSNickeau        return str_replace("/", WikiPath::NAMESPACE_SEPARATOR_DOUBLE_POINT, $originalId);
145c3437056SNickeau    }
146c3437056SNickeau
147c3437056SNickeau    /**
148c3437056SNickeau     * Determine if the request should be banned based on the id
149c3437056SNickeau     *
150c3437056SNickeau     * @param string $id
151c3437056SNickeau     * @return bool
152c3437056SNickeau     *
153c3437056SNickeau     * See also {@link https://perishablepress.com/7g-firewall/#features}
154c3437056SNickeau     * for blocking rules on http request data such as:
155c3437056SNickeau     *   * query_string
156c3437056SNickeau     *   * user_agent,
157c3437056SNickeau     *   * remote host
158c3437056SNickeau     */
159c3437056SNickeau    public static function isShadowBanned(string $id): bool
160c3437056SNickeau    {
161c3437056SNickeau        /**
162c3437056SNickeau         * ie
163c3437056SNickeau         * wp-json:api:flutter_woo:config_file
164c3437056SNickeau         * wp-content:plugins:wpdiscuz:themes:default:style-rtl.css
165c3437056SNickeau         * wp-admin
166c3437056SNickeau         * 2020:wp-includes:wlwmanifest.xml
167c3437056SNickeau         * wp-content:start
168c3437056SNickeau         * wp-admin:css:start
169c3437056SNickeau         * sito:wp-includes:wlwmanifest.xml
170c3437056SNickeau         * site:wp-includes:wlwmanifest.xml
171c3437056SNickeau         * cms:wp-includes:wlwmanifest.xml
172c3437056SNickeau         * test:wp-includes:wlwmanifest.xml
173c3437056SNickeau         * media:wp-includes:wlwmanifest.xml
174c3437056SNickeau         * wp2:wp-includes:wlwmanifest.xml
175c3437056SNickeau         * 2019:wp-includes:wlwmanifest.xml
176c3437056SNickeau         * shop:wp-includes:wlwmanifest.xml
177c3437056SNickeau         * wp1:wp-includes:wlwmanifest.xml
178c3437056SNickeau         * news:wp-includes:wlwmanifest.xml
179c3437056SNickeau         * 2018:wp-includes:wlwmanifest.xml
180c3437056SNickeau         */
181c3437056SNickeau        if (strpos($id, 'wp-') !== false) {
182c3437056SNickeau            return true;
183c3437056SNickeau        }
184c3437056SNickeau
185c3437056SNickeau        /**
186c3437056SNickeau         * db:oracle:long_or_1_utl_inaddr.get_host_address_chr_33_chr_126_chr_33_chr_65_chr_66_chr_67_chr_49_chr_52_chr_53_chr_90_chr_81_chr_54_chr_50_chr_68_chr_87_chr_81_chr_65_chr_70_chr_80_chr_79_chr_73_chr_89_chr_67_chr_70_chr_68_chr_33_chr_126_chr_33
187c3437056SNickeau         * db:oracle:999999.9:union:all:select_null:from_dual
188c3437056SNickeau         * db:oracle:999999.9:union:all:select_null:from_dual_and_0_0
189c3437056SNickeau         */
190c3437056SNickeau        if (preg_match('/_chr_|_0_0/', $id) === 1) {
191c3437056SNickeau            return true;
192c3437056SNickeau        }
193c3437056SNickeau
194c3437056SNickeau
195c3437056SNickeau        /**
196c3437056SNickeau         * ie
197c3437056SNickeau         * git:objects:
198c3437056SNickeau         * git:refs:heads:stable
199c3437056SNickeau         * git:logs:refs:heads:main
200c3437056SNickeau         * git:logs:refs:heads:stable
201c3437056SNickeau         * git:hooks:pre-push.sample
202c3437056SNickeau         * git:hooks:pre-receive.sample
203c3437056SNickeau         */
204c3437056SNickeau        if (strpos($id, "git:") === 0) {
205c3437056SNickeau            return true;
206c3437056SNickeau        }
207c3437056SNickeau
208c3437056SNickeau        return false;
209c3437056SNickeau
210c3437056SNickeau    }
211c3437056SNickeau
212c3437056SNickeau    /**
213c3437056SNickeau     * @param string $id
214c3437056SNickeau     * @return bool
215c3437056SNickeau     * well-known:traffic-advice = https://github.com/buettner/private-prefetch-proxy/blob/main/traffic-advice.md
216c3437056SNickeau     * .well-known/security.txt, id=well-known:security.txt = https://securitytxt.org/
217c3437056SNickeau     * well-known:dnt-policy.txt
218c3437056SNickeau     */
219c3437056SNickeau    public static function isWellKnownFile(string $id): bool
220c3437056SNickeau    {
221c3437056SNickeau        return strpos($id, "well-known") === 0;
222c3437056SNickeau    }
223c3437056SNickeau
224c3437056SNickeau
225c3437056SNickeau    function register(Doku_Event_Handler $controller)
226c3437056SNickeau    {
227c3437056SNickeau
22804fd306cSNickeau        if (SiteConfig::getConfValue(self::ROUTER_ENABLE_CONF, 1)) {
22904fd306cSNickeau
230c3437056SNickeau            /**
231c3437056SNickeau             * This will call the function {@link action_plugin_combo_router::_router()}
232c3437056SNickeau             * The event is not DOKUWIKI_STARTED because this is not the first one
233c3437056SNickeau             *
234c3437056SNickeau             * https://www.dokuwiki.org/devel:event:init_lang_load
235c3437056SNickeau             */
236c3437056SNickeau            $controller->register_hook('DOKUWIKI_STARTED',
23704fd306cSNickeau                'BEFORE',
238c3437056SNickeau                $this,
239c3437056SNickeau                'router',
240c3437056SNickeau                array());
241c3437056SNickeau
242c3437056SNickeau            /**
243c3437056SNickeau             * This is the real first call of Dokuwiki
244c3437056SNickeau             * Unfortunately, it does not create the environment
245c3437056SNickeau             * We just ban to spare server resources
246c3437056SNickeau             *
247c3437056SNickeau             * https://www.dokuwiki.org/devel:event:init_lang_load
248c3437056SNickeau             */
249c3437056SNickeau            $controller->register_hook('INIT_LANG_LOAD', 'BEFORE', $this, 'ban', array());
250c3437056SNickeau
251c3437056SNickeau        }
252c3437056SNickeau
253c3437056SNickeau
254c3437056SNickeau    }
255c3437056SNickeau
256c3437056SNickeau    /**
257c3437056SNickeau     *
258c3437056SNickeau     * We have created a spacial ban function that is
259c3437056SNickeau     * called before the first function
260c3437056SNickeau     * {@link action_plugin_combo_metalang::load_lang()}
261c3437056SNickeau     * to spare CPU.
262c3437056SNickeau     *
263c3437056SNickeau     * @param $event
264c3437056SNickeau     * @throws Exception
265c3437056SNickeau     */
266c3437056SNickeau    function ban(&$event)
267c3437056SNickeau    {
268c3437056SNickeau
269c3437056SNickeau        $id = self::getOriginalIdFromRequest();
27006ecf9e7Sgerardnico        if ($id === null) {
27106ecf9e7Sgerardnico            return;
27206ecf9e7Sgerardnico        }
27304fd306cSNickeau        $page = MarkupPath::createMarkupFromId($id);
27404fd306cSNickeau        if (!FileSystems::exists($page)) {
275c3437056SNickeau            // Well known
276c3437056SNickeau            if (self::isWellKnownFile($id)) {
277c3437056SNickeau                $this->logRedirection($id, "", self::TARGET_ORIGIN_WELL_KNOWN, self::REDIRECT_NOTFOUND_METHOD);
27804fd306cSNickeau                ExecutionContext::getActualOrCreateFromEnv()
27904fd306cSNickeau                    ->response()
28004fd306cSNickeau                    ->setStatus(HttpResponseStatus::NOT_FOUND)
28104fd306cSNickeau                    ->end();
282c3437056SNickeau                return;
283c3437056SNickeau            }
284c3437056SNickeau
285c3437056SNickeau            // Shadow banned
286c3437056SNickeau            if (self::isShadowBanned($id)) {
28704fd306cSNickeau                $webSiteHomePage = Site::getIndexPageName();
288c3437056SNickeau                $this->executeTransparentRedirect($webSiteHomePage, self::TARGET_ORIGIN_SHADOW_BANNED);
289c3437056SNickeau            }
290c3437056SNickeau        }
291c3437056SNickeau    }
292c3437056SNickeau
293c3437056SNickeau    /**
294c3437056SNickeau     * @param $event Doku_Event
295c3437056SNickeau     * @param $param
296c3437056SNickeau     * @return void
297c3437056SNickeau     * @throws Exception
298c3437056SNickeau     */
299c3437056SNickeau    function router(&$event, $param)
300c3437056SNickeau    {
301c3437056SNickeau
30204fd306cSNickeau        /**
30304fd306cSNickeau         * Just the {@link ExecutionContext::SHOW_ACTION}
30404fd306cSNickeau         * may be redirected
30504fd306cSNickeau         */
30604fd306cSNickeau        $executionContext = ExecutionContext::getActualOrCreateFromEnv();
30704fd306cSNickeau        if ($executionContext->getExecutingAction() !== ExecutionContext::SHOW_ACTION) {
30804fd306cSNickeau            return;
30904fd306cSNickeau        }
310c3437056SNickeau
31154743e42Sgerardnico        $urlRewrite = Site::getUrlRewrite();
31254743e42Sgerardnico        if ($urlRewrite == UrlRewrite::VALUE_DOKU_REWRITE) {
31354743e42Sgerardnico            UrlRewrite::sendErrorMessage();
31454743e42Sgerardnico            return;
31554743e42Sgerardnico        }
316c3437056SNickeau
317c3437056SNickeau        global $ID;
318c3437056SNickeau
319c3437056SNickeau        /**
320c3437056SNickeau         * Without SQLite, this module does not work further
321c3437056SNickeau         */
32204fd306cSNickeau        try {
32304fd306cSNickeau            Sqlite::createOrGetSqlite();
32404fd306cSNickeau        } catch (ExceptionSqliteNotAvailable $e) {
325c3437056SNickeau            return;
326c3437056SNickeau        }
327c3437056SNickeau
32804fd306cSNickeau        $this->pageRules = new PageRules();
32904fd306cSNickeau
33004fd306cSNickeau
331c3437056SNickeau        /**
332c3437056SNickeau         * Unfortunately, DOKUWIKI_STARTED is not the first event
333c3437056SNickeau         * The id may have been changed by
33404fd306cSNickeau         * {@link action_plugin_combo_lang::load_lang()}
335c3437056SNickeau         * function, that's why we check against the {@link $_REQUEST}
336c3437056SNickeau         * and not the global ID
337c3437056SNickeau         */
338c3437056SNickeau        $originalId = self::getOriginalIdFromRequest();
339c3437056SNickeau
340c3437056SNickeau        /**
341c3437056SNickeau         * Page is an existing id ?
342c3437056SNickeau         */
34304fd306cSNickeau        $requestedMarkupPath = MarkupPath::createMarkupFromId($ID);
34404fd306cSNickeau        if (FileSystems::exists($requestedMarkupPath)) {
345c3437056SNickeau
346c3437056SNickeau            /**
347c3437056SNickeau             * If this is not the root home page
348c3437056SNickeau             * and if the canonical id is the not the same,
349c3437056SNickeau             * and if this is not a historical page (revision)
350c3437056SNickeau             * redirect
351c3437056SNickeau             */
352c3437056SNickeau            if (
35304fd306cSNickeau                $originalId !== $requestedMarkupPath->getUrlId() // The id may have been changed
35404fd306cSNickeau                && $ID != Site::getIndexPageName()
355c3437056SNickeau                && !isset($_REQUEST["rev"])
356c3437056SNickeau            ) {
3574cadd4f8SNickeau                /**
3584cadd4f8SNickeau                 * TODO: When saving for the first time, the page is not stored in the database
3594cadd4f8SNickeau                 *   but that's not the case actually
3604cadd4f8SNickeau                 */
36104fd306cSNickeau                $databasePageRow = $requestedMarkupPath->getDatabasePage();
36204fd306cSNickeau                if ($databasePageRow->exists()) {
36304fd306cSNickeau                    /**
36404fd306cSNickeau                     * A move may leave the database in a bad state,
36504fd306cSNickeau                     * unfortunately (ie page is not in index, unable to update, ...)
36604fd306cSNickeau                     * We test therefore if the database page id exists
36704fd306cSNickeau                     */
36804fd306cSNickeau                    $targetPageId = $databasePageRow->getFromRow("id");
36904fd306cSNickeau                    $targetPath = WikiPath::createMarkupPathFromId($targetPageId);
37004fd306cSNickeau                    if (FileSystems::exists($targetPath)) {
371c3437056SNickeau                        $this->executePermanentRedirect(
37204fd306cSNickeau                            $requestedMarkupPath->getCanonicalUrl()->toAbsoluteUrlString(),
373c3437056SNickeau                            self::TARGET_ORIGIN_PERMALINK_EXTENDED
374c3437056SNickeau                        );
375c3437056SNickeau                    }
3764cadd4f8SNickeau                }
37704fd306cSNickeau            }
378c3437056SNickeau            return;
379c3437056SNickeau        }
380c3437056SNickeau
381c3437056SNickeau
382c3437056SNickeau        $identifier = $ID;
383c3437056SNickeau
384c3437056SNickeau
385c3437056SNickeau        /**
386c3437056SNickeau         * Page Id Website / root Permalink ?
387c3437056SNickeau         */
38804fd306cSNickeau        $shortPageId = PageUrlPath::getShortEncodedPageIdFromUrlId($requestedMarkupPath->getPathObject()->getLastNameWithoutExtension());
389c3437056SNickeau        if ($shortPageId !== null) {
390c3437056SNickeau            $pageId = PageUrlPath::decodePageId($shortPageId);
39104fd306cSNickeau            if ($requestedMarkupPath->getParent() === null && $pageId !== null) {
39204fd306cSNickeau                $page = DatabasePageRow::createFromPageId($pageId)->getMarkupPath();
393c3437056SNickeau                if ($page !== null && $page->exists()) {
39482a60d03SNickeau                    $this->executePermanentRedirect(
39504fd306cSNickeau                        $page->getCanonicalUrl()->toAbsoluteUrlString(),
39682a60d03SNickeau                        self::TARGET_ORIGIN_PERMALINK
39782a60d03SNickeau                    );
398c3437056SNickeau                }
399c3437056SNickeau            }
400c3437056SNickeau
401c3437056SNickeau            /**
402c3437056SNickeau             * Page Id Abbr ?
403c3437056SNickeau             * {@link PageUrlType::CONF_CANONICAL_URL_TYPE}
404c3437056SNickeau             */
405c3437056SNickeau            if (
406c3437056SNickeau                $pageId !== null
407c3437056SNickeau            ) {
40804fd306cSNickeau                $page = DatabasePageRow::createFromPageIdAbbr($pageId)->getMarkupPath();
409c3437056SNickeau                if ($page === null) {
410c3437056SNickeau                    // or the length of the abbr has changed
41104fd306cSNickeau                    $canonicalDatabasePage = new DatabasePageRow();
41204fd306cSNickeau                    $row = $canonicalDatabasePage->getDatabaseRowFromAttribute("substr(" . PageId::PROPERTY_NAME . ", 1, " . strlen($pageId) . ")", $pageId);
4134cadd4f8SNickeau                    if ($row !== null) {
41404fd306cSNickeau                        $canonicalDatabasePage->setRow($row);
41504fd306cSNickeau                        $page = $canonicalDatabasePage->getMarkupPath();
416c3437056SNickeau                    }
417c3437056SNickeau                }
418c3437056SNickeau                if ($page !== null && $page->exists()) {
419c3437056SNickeau                    /**
420c3437056SNickeau                     * If the url canonical id has changed, we show it
421c3437056SNickeau                     * to the writer by performing a permanent redirect
422c3437056SNickeau                     */
423c3437056SNickeau                    if ($identifier != $page->getUrlId()) {
424c3437056SNickeau                        // Google asks for a redirect
425c3437056SNickeau                        // https://developers.google.com/search/docs/advanced/crawling/301-redirects
426c3437056SNickeau                        // People access your site through several different URLs.
427c3437056SNickeau                        // If, for example, your home page can be reached in multiple ways
428c3437056SNickeau                        // (for instance, http://example.com/home, http://home.example.com, or http://www.example.com),
429c3437056SNickeau                        // it's a good idea to pick one of those URLs as your preferred (canonical) destination,
430c3437056SNickeau                        // and use redirects to send traffic from the other URLs to your preferred URL.
431c3437056SNickeau                        $this->executePermanentRedirect(
43204fd306cSNickeau                            $page->getCanonicalUrl()->toAbsoluteUrlString(),
433c3437056SNickeau                            self::TARGET_ORIGIN_PERMALINK_EXTENDED
434c3437056SNickeau                        );
435c3437056SNickeau                        return;
436c3437056SNickeau                    }
4374cadd4f8SNickeau
43804fd306cSNickeau                    $this->executeTransparentRedirect($page->getWikiId(), self::TARGET_ORIGIN_PERMALINK_EXTENDED);
439c3437056SNickeau                    return;
440c3437056SNickeau
441c3437056SNickeau                }
442c3437056SNickeau                // permanent url not yet in the database
443c3437056SNickeau                // Other permanent such as permanent canonical ?
444c3437056SNickeau                // We let the process go with the new identifier
445c3437056SNickeau
446c3437056SNickeau            }
447c3437056SNickeau
448c3437056SNickeau        }
449c3437056SNickeau
450c3437056SNickeau        // Global variable needed in the process
451c3437056SNickeau        global $conf;
452c3437056SNickeau
453c3437056SNickeau        /**
454c3437056SNickeau         * Identifier is a Canonical ?
455c3437056SNickeau         */
45604fd306cSNickeau        $canonicalDatabasePage = DatabasePageRow::createFromCanonical($identifier);
45704fd306cSNickeau        $canonicalPage = $canonicalDatabasePage->getMarkupPath();
45804fd306cSNickeau        if ($canonicalPage !== null && $canonicalPage->exists()) {
45982a60d03SNickeau            /**
46082a60d03SNickeau             * Does the canonical url is canonical name based
46182a60d03SNickeau             * ie {@link  PageUrlType::CONF_VALUE_CANONICAL_PATH}
46282a60d03SNickeau             */
46304fd306cSNickeau            if ($canonicalPage->getUrlId() === $identifier) {
46482a60d03SNickeau                $res = $this->executeTransparentRedirect(
46504fd306cSNickeau                    $canonicalPage->getWikiId(),
46682a60d03SNickeau                    self::TARGET_ORIGIN_CANONICAL
46782a60d03SNickeau                );
46882a60d03SNickeau            } else {
46982a60d03SNickeau                $res = $this->executePermanentRedirect(
47004fd306cSNickeau                    $canonicalPage->getWikiId(), // not the url because, it allows to add url query redirection property
47182a60d03SNickeau                    self::TARGET_ORIGIN_CANONICAL
47282a60d03SNickeau                );
47382a60d03SNickeau            }
474c3437056SNickeau            if ($res) {
475c3437056SNickeau                return;
476c3437056SNickeau            }
477c3437056SNickeau        }
478c3437056SNickeau
479c3437056SNickeau        /**
480c3437056SNickeau         * Identifier is an alias
481c3437056SNickeau         */
48204fd306cSNickeau        $aliasRequestedPage = DatabasePageRow::createFromAlias($identifier)->getMarkupPath();
483c3437056SNickeau        if (
48404fd306cSNickeau            $aliasRequestedPage !== null
48504fd306cSNickeau            && $aliasRequestedPage->exists()
486c3437056SNickeau            // The build alias is the file system metadata alias
487c3437056SNickeau            // it may be null if the replication in the database was not successful
48804fd306cSNickeau            && $aliasRequestedPage->getBuildAlias() !== null
489c3437056SNickeau        ) {
49004fd306cSNickeau            $buildAlias = $aliasRequestedPage->getBuildAlias();
491c3437056SNickeau            switch ($buildAlias->getType()) {
492c3437056SNickeau                case AliasType::REDIRECT:
49304fd306cSNickeau                    $res = $this->executePermanentRedirect($aliasRequestedPage->getCanonicalUrl()->toAbsoluteUrlString(), self::TARGET_ORIGIN_ALIAS);
494c3437056SNickeau                    if ($res) {
495c3437056SNickeau                        return;
496c3437056SNickeau                    }
497c3437056SNickeau                    break;
498c3437056SNickeau                case AliasType::SYNONYM:
49904fd306cSNickeau                    $res = $this->executeTransparentRedirect($aliasRequestedPage->getWikiId(), self::TARGET_ORIGIN_ALIAS);
500c3437056SNickeau                    if ($res) {
501c3437056SNickeau                        return;
502c3437056SNickeau                    }
503c3437056SNickeau                    break;
504c3437056SNickeau                default:
505c3437056SNickeau                    LogUtility::msg("The alias type ({$buildAlias->getType()}) is unknown. A permanent redirect was performed for the alias $identifier");
50604fd306cSNickeau                    $res = $this->executePermanentRedirect($aliasRequestedPage->getCanonicalUrl()->toAbsoluteUrlString(), self::TARGET_ORIGIN_ALIAS);
507c3437056SNickeau                    if ($res) {
508c3437056SNickeau                        return;
509c3437056SNickeau                    }
510c3437056SNickeau                    break;
511c3437056SNickeau            }
512c3437056SNickeau        }
513c3437056SNickeau
514c3437056SNickeau
515c3437056SNickeau        // If there is a redirection defined in the page rules
516c3437056SNickeau        $result = $this->processingPageRules();
517c3437056SNickeau        if ($result) {
518c3437056SNickeau            // A redirection has occurred
519c3437056SNickeau            // finish the process
520c3437056SNickeau            return;
521c3437056SNickeau        }
522c3437056SNickeau
523c3437056SNickeau        /**
524c3437056SNickeau         *
525c3437056SNickeau         * There was no redirection found, redirect to edit mode if writer
526c3437056SNickeau         *
527c3437056SNickeau         */
528c3437056SNickeau        if (Identity::isWriter() && $this->getConf(self::GO_TO_EDIT_MODE) == 1) {
529c3437056SNickeau
530c3437056SNickeau            $this->gotToEditMode($event);
531c3437056SNickeau            // Stop here
532c3437056SNickeau            return;
533c3437056SNickeau
534c3437056SNickeau        }
535c3437056SNickeau
53604fd306cSNickeau        /**
537c3437056SNickeau         *  We are still a reader, the redirection does not exist the user is not allowed to edit the page (public of other)
538c3437056SNickeau         */
539c3437056SNickeau        if ($this->getConf('ActionReaderFirst') == self::NOTHING) {
540c3437056SNickeau            return;
541c3437056SNickeau        }
542c3437056SNickeau
543c3437056SNickeau        // We are reader and their is no redirection set, we apply the algorithm
544c3437056SNickeau        $readerAlgorithms = array();
545c3437056SNickeau        $readerAlgorithms[0] = $this->getConf('ActionReaderFirst');
546c3437056SNickeau        $readerAlgorithms[1] = $this->getConf('ActionReaderSecond');
547c3437056SNickeau        $readerAlgorithms[2] = $this->getConf('ActionReaderThird');
548c3437056SNickeau
549c3437056SNickeau        while (
550c3437056SNickeau            ($algorithm = array_shift($readerAlgorithms)) != null
551c3437056SNickeau        ) {
552c3437056SNickeau
553c3437056SNickeau            switch ($algorithm) {
554c3437056SNickeau
555c3437056SNickeau                case self::NOTHING:
556c3437056SNickeau                    return;
557c3437056SNickeau
558c3437056SNickeau                case self::GO_TO_BEST_END_PAGE_NAME:
559c3437056SNickeau
56004fd306cSNickeau                    /**
56104fd306cSNickeau                     * @var MarkupPath $bestEndPage
56204fd306cSNickeau                     */
56304fd306cSNickeau                    list($bestEndPage, $method) = RouterBestEndPage::process($requestedMarkupPath);
564*ea801fd8Sgerardnico                    if ($bestEndPage != null && $bestEndPage->getWikiId() !== $requestedMarkupPath->getWikiId()) {
565c3437056SNickeau                        $res = false;
566c3437056SNickeau                        switch ($method) {
567c3437056SNickeau                            case self::REDIRECT_PERMANENT_METHOD:
56804fd306cSNickeau                                $res = $this->executePermanentRedirect($bestEndPage->getWikiId(), self::TARGET_ORIGIN_BEST_END_PAGE_NAME);
569c3437056SNickeau                                break;
570c3437056SNickeau                            case self::REDIRECT_NOTFOUND_METHOD:
57104fd306cSNickeau                                $res = $this->performNotFoundRedirect($bestEndPage->getWikiId(), self::TARGET_ORIGIN_BEST_END_PAGE_NAME);
572c3437056SNickeau                                break;
573c3437056SNickeau                            default:
574c3437056SNickeau                                LogUtility::msg("This redirection method ($method) was not expected for the redirection algorithm ($algorithm)");
575c3437056SNickeau                        }
576c3437056SNickeau                        if ($res) {
577c3437056SNickeau                            // Redirection has succeeded
578c3437056SNickeau                            return;
579c3437056SNickeau                        }
580c3437056SNickeau                    }
581c3437056SNickeau                    break;
582c3437056SNickeau
583c3437056SNickeau                case self::GO_TO_NS_START_PAGE:
584c3437056SNickeau
585c3437056SNickeau                    // Start page with the conf['start'] parameter
586c3437056SNickeau                    $startPage = getNS($identifier) . ':' . $conf['start'];
587c3437056SNickeau                    if (page_exists($startPage)) {
588c3437056SNickeau                        $res = $this->performNotFoundRedirect($startPage, self::TARGET_ORIGIN_START_PAGE);
589c3437056SNickeau                        if ($res) {
590c3437056SNickeau                            return;
591c3437056SNickeau                        }
592c3437056SNickeau                    }
593c3437056SNickeau
594c3437056SNickeau                    // Start page with the same name than the namespace
595c3437056SNickeau                    $startPage = getNS($identifier) . ':' . curNS($identifier);
596c3437056SNickeau                    if (page_exists($startPage)) {
597c3437056SNickeau                        $res = $this->performNotFoundRedirect($startPage, self::TARGET_ORIGIN_START_PAGE);
598c3437056SNickeau                        if ($res) {
599c3437056SNickeau                            return;
600c3437056SNickeau                        }
601c3437056SNickeau                    }
602c3437056SNickeau                    break;
603c3437056SNickeau
604c3437056SNickeau                case self::GO_TO_BEST_PAGE_NAME:
605c3437056SNickeau
606c3437056SNickeau                    $bestPageId = null;
607c3437056SNickeau
608c3437056SNickeau                    $bestPage = $this->getBestPage($identifier);
609c3437056SNickeau                    $bestPageId = $bestPage['id'];
610c3437056SNickeau                    $scorePageName = $bestPage['score'];
611c3437056SNickeau
612c3437056SNickeau                    // Get Score from a Namespace
613c3437056SNickeau                    $bestNamespace = $this->scoreBestNamespace($identifier);
614c3437056SNickeau                    $bestNamespaceId = $bestNamespace['namespace'];
615c3437056SNickeau                    $namespaceScore = $bestNamespace['score'];
616c3437056SNickeau
617c3437056SNickeau                    // Compare the two score
618c3437056SNickeau                    if ($scorePageName > 0 or $namespaceScore > 0) {
619c3437056SNickeau                        if ($scorePageName > $namespaceScore) {
620c3437056SNickeau                            $this->performNotFoundRedirect($bestPageId, self::TARGET_ORIGIN_BEST_PAGE_NAME);
621c3437056SNickeau                        } else {
622c3437056SNickeau                            $this->performNotFoundRedirect($bestNamespaceId, self::TARGET_ORIGIN_BEST_PAGE_NAME);
623c3437056SNickeau                        }
624c3437056SNickeau                        return;
625c3437056SNickeau                    }
626c3437056SNickeau                    break;
627c3437056SNickeau
628c3437056SNickeau                case self::GO_TO_BEST_NAMESPACE:
629c3437056SNickeau
630c3437056SNickeau                    $scoreNamespace = $this->scoreBestNamespace($identifier);
631c3437056SNickeau                    $bestNamespaceId = $scoreNamespace['namespace'];
632c3437056SNickeau                    $score = $scoreNamespace['score'];
633c3437056SNickeau
634c3437056SNickeau                    if ($score > 0) {
635c3437056SNickeau                        $this->performNotFoundRedirect($bestNamespaceId, self::TARGET_ORIGIN_BEST_NAMESPACE);
636c3437056SNickeau                        return;
637c3437056SNickeau                    }
638c3437056SNickeau                    break;
639c3437056SNickeau
640c3437056SNickeau                case self::GO_TO_SEARCH_ENGINE:
641c3437056SNickeau
642c3437056SNickeau                    $this->redirectToSearchEngine();
643c3437056SNickeau
644c3437056SNickeau                    return;
645c3437056SNickeau
646c3437056SNickeau                // End Switch Action
647c3437056SNickeau            }
648c3437056SNickeau
649c3437056SNickeau            // End While Action
650c3437056SNickeau        }
651c3437056SNickeau
652c3437056SNickeau
653c3437056SNickeau    }
654c3437056SNickeau
655c3437056SNickeau
656c3437056SNickeau    /**
657c3437056SNickeau     * getBestNamespace
658c3437056SNickeau     * Return a list with 'BestNamespaceId Score'
659c3437056SNickeau     * @param $id
660c3437056SNickeau     * @return array
661c3437056SNickeau     */
662c3437056SNickeau    private
663c3437056SNickeau    function scoreBestNamespace($id)
664c3437056SNickeau    {
665c3437056SNickeau
666c3437056SNickeau        global $conf;
667c3437056SNickeau
668c3437056SNickeau        // Parameters
669c3437056SNickeau        $pageNameSpace = getNS($id);
670c3437056SNickeau
671c3437056SNickeau        // If the page has an existing namespace start page take it, other search other namespace
672c3437056SNickeau        $startPageNameSpace = $pageNameSpace . ":";
673c3437056SNickeau        $dateAt = '';
674c3437056SNickeau        // $startPageNameSpace will get a full path (ie with start or the namespace
675c3437056SNickeau        resolve_pageid($pageNameSpace, $startPageNameSpace, $exists, $dateAt, true);
676c3437056SNickeau        if (page_exists($startPageNameSpace)) {
677c3437056SNickeau            $nameSpaces = array($startPageNameSpace);
678c3437056SNickeau        } else {
679c3437056SNickeau            $nameSpaces = ft_pageLookup($conf['start']);
680c3437056SNickeau        }
681c3437056SNickeau
682c3437056SNickeau        // Parameters and search the best namespace
683c3437056SNickeau        $pathNames = explode(':', $pageNameSpace);
684c3437056SNickeau        $bestNbWordFound = 0;
685c3437056SNickeau        $bestNamespaceId = '';
686c3437056SNickeau        foreach ($nameSpaces as $nameSpace) {
687c3437056SNickeau
688c3437056SNickeau            $nbWordFound = 0;
689c3437056SNickeau            foreach ($pathNames as $pathName) {
690c3437056SNickeau                if (strlen($pathName) > 2) {
691c3437056SNickeau                    $nbWordFound = $nbWordFound + substr_count($nameSpace, $pathName);
692c3437056SNickeau                }
693c3437056SNickeau            }
694c3437056SNickeau            if ($nbWordFound > $bestNbWordFound) {
695c3437056SNickeau                // Take only the smallest namespace
696c3437056SNickeau                if (strlen($nameSpace) < strlen($bestNamespaceId) or $nbWordFound > $bestNbWordFound) {
697c3437056SNickeau                    $bestNbWordFound = $nbWordFound;
698c3437056SNickeau                    $bestNamespaceId = $nameSpace;
699c3437056SNickeau                }
700c3437056SNickeau            }
701c3437056SNickeau        }
702c3437056SNickeau
703c3437056SNickeau        $startPageFactor = $this->getConf('WeightFactorForStartPage');
704c3437056SNickeau        $nameSpaceFactor = $this->getConf('WeightFactorForSameNamespace');
705c3437056SNickeau        if ($bestNbWordFound > 0) {
706c3437056SNickeau            $bestNamespaceScore = $bestNbWordFound * $nameSpaceFactor + $startPageFactor;
707c3437056SNickeau        } else {
708c3437056SNickeau            $bestNamespaceScore = 0;
709c3437056SNickeau        }
710c3437056SNickeau
711c3437056SNickeau
712c3437056SNickeau        return array(
713c3437056SNickeau            'namespace' => $bestNamespaceId,
714c3437056SNickeau            'score' => $bestNamespaceScore
715c3437056SNickeau        );
716c3437056SNickeau
717c3437056SNickeau    }
718c3437056SNickeau
719c3437056SNickeau    /**
720c3437056SNickeau     * @param $event
721c3437056SNickeau     */
722c3437056SNickeau    private
723c3437056SNickeau    function gotToEditMode(&$event)
724c3437056SNickeau    {
725c3437056SNickeau        global $ACT;
726c3437056SNickeau        $ACT = 'edit';
727c3437056SNickeau
728c3437056SNickeau    }
729c3437056SNickeau
730c3437056SNickeau
731c3437056SNickeau    /**
732c3437056SNickeau     * Redirect to an internal page ie:
733c3437056SNickeau     *   * on the same domain
734c3437056SNickeau     *   * no HTTP redirect
735c3437056SNickeau     *   * id rewrite
736c3437056SNickeau     * @param string $targetPageId - target page id
737c3437056SNickeau     * @param string $targetOriginId - the source of the target (redirect)
738c3437056SNickeau     * @return bool - return true if the user has the permission and that the redirect was done
739c3437056SNickeau     * @throws Exception
740c3437056SNickeau     */
741c3437056SNickeau    private
742c3437056SNickeau    function executeTransparentRedirect(string $targetPageId, string $targetOriginId): bool
743c3437056SNickeau    {
744c3437056SNickeau        /**
745c3437056SNickeau         * Because we set the ID globally for the ID redirect
74604fd306cSNickeau         * we make sure that this is not a {@link MarkupPath}
747c3437056SNickeau         * object otherwise we got an error in the {@link \ComboStrap\AnalyticsMenuItem}
748c3437056SNickeau         * because the constructor takes it {@link \dokuwiki\Menu\Item\AbstractItem}
749c3437056SNickeau         */
750c3437056SNickeau        if (is_object($targetPageId)) {
751c3437056SNickeau            $class = get_class($targetPageId);
752c3437056SNickeau            LogUtility::msg("The parameters targetPageId ($targetPageId) is an object of the class ($class) and it should be a page id");
753c3437056SNickeau        }
754c3437056SNickeau
755c3437056SNickeau        if (is_object($targetOriginId)) {
756c3437056SNickeau            $class = get_class($targetOriginId);
757c3437056SNickeau            LogUtility::msg("The parameters targetOriginId ($targetOriginId) is an object of the class ($class) and it should be a page id");
758c3437056SNickeau        }
759c3437056SNickeau
760c3437056SNickeau        // If the user does not have the right to see the target page
761c3437056SNickeau        // don't do anything
762c3437056SNickeau        if (!(Identity::isReader($targetPageId))) {
763c3437056SNickeau            return false;
764c3437056SNickeau        }
765c3437056SNickeau
766c3437056SNickeau        // Change the id
767c3437056SNickeau        global $ID;
768c3437056SNickeau        global $INFO;
769c3437056SNickeau        $sourceId = $ID;
770c3437056SNickeau        $ID = $targetPageId;
77104fd306cSNickeau        if (isset($_REQUEST["id"])) {
77204fd306cSNickeau            $_REQUEST["id"] = $targetPageId;
77304fd306cSNickeau        }
77404fd306cSNickeau        if (isset($_GET["id"])) {
77504fd306cSNickeau            $_GET["id"] = $targetPageId;
77604fd306cSNickeau        }
7774cadd4f8SNickeau
778c3437056SNickeau        /**
7794cadd4f8SNickeau         * Refresh the $INFO data
7804cadd4f8SNickeau         *
7814cadd4f8SNickeau         * the info attributes are used elsewhere
7824cadd4f8SNickeau         *   'id': for the sidebar
7834cadd4f8SNickeau         *   'exist' : for the meta robot = noindex,follow, see {@link tpl_metaheaders()}
7844cadd4f8SNickeau         *   'rev' : for the edit button to be sure that the page is still the same
785c3437056SNickeau         */
7864cadd4f8SNickeau        $INFO = pageinfo();
787c3437056SNickeau
788c3437056SNickeau        /**
789c3437056SNickeau         * Not compatible with
790c3437056SNickeau         * https://www.dokuwiki.org/config:send404 is enabled
791c3437056SNickeau         *
792c3437056SNickeau         * This check happens before that dokuwiki is started
793c3437056SNickeau         * and send an header in doku.php
794c3437056SNickeau         *
795c3437056SNickeau         * We send a warning
796c3437056SNickeau         */
797c3437056SNickeau        global $conf;
798c3437056SNickeau        if ($conf['send404'] == true) {
799c3437056SNickeau            LogUtility::msg("The <a href=\"https://www.dokuwiki.org/config:send404\">dokuwiki send404 configuration</a> is on and should be disabled when using the url manager", LogUtility::LVL_MSG_ERROR, self::CANONICAL);
800c3437056SNickeau        }
801c3437056SNickeau
802c3437056SNickeau        // Redirection
803c3437056SNickeau        $this->logRedirection($sourceId, $targetPageId, $targetOriginId, self::REDIRECT_TRANSPARENT_METHOD);
804c3437056SNickeau
805c3437056SNickeau        return true;
806c3437056SNickeau
807c3437056SNickeau    }
808c3437056SNickeau
80904fd306cSNickeau    private function executePermanentRedirect(string $targetIdOrUrl, $targetOrigin): bool
810c3437056SNickeau    {
81104fd306cSNickeau        return $this->executeHttpRedirect($targetIdOrUrl, $targetOrigin, self::REDIRECT_PERMANENT_METHOD);
812c3437056SNickeau    }
813c3437056SNickeau
814c3437056SNickeau    /**
815c3437056SNickeau     * The general HTTP Redirect method to an internal page
816c3437056SNickeau     * where the redirection method decide which type of redirection
81704fd306cSNickeau     * @param string $targetIdOrUrl - a dokuwiki id or an url
818c3437056SNickeau     * @param string $targetOrigin - the origin of the target (the algorithm used to get the target origin)
819c3437056SNickeau     * @param string $method - the redirection method
820c3437056SNickeau     */
821c3437056SNickeau    private
82204fd306cSNickeau    function executeHttpRedirect(string $targetIdOrUrl, string $targetOrigin, string $method): bool
823c3437056SNickeau    {
824c3437056SNickeau
825c3437056SNickeau        global $ID;
826c3437056SNickeau
827c3437056SNickeau
828c3437056SNickeau        // Log the redirections
82904fd306cSNickeau        $this->logRedirection($ID, $targetIdOrUrl, $targetOrigin, $method);
830c3437056SNickeau
831c3437056SNickeau
83204fd306cSNickeau        // An http external url ?
83304fd306cSNickeau        try {
8345b0932efSgerardnico            $isHttpUrl = Url::createFromString($targetIdOrUrl)->isHttpUrl();
83504fd306cSNickeau        } catch (ExceptionBadSyntax|ExceptionBadArgument $e) {
8365b0932efSgerardnico            $isHttpUrl = false;
83704fd306cSNickeau        }
83804fd306cSNickeau
83982a60d03SNickeau        // If there is a bug in the isValid function for an internal url
84082a60d03SNickeau        // We get a loop.
84182a60d03SNickeau        // The Url becomes the id, the id is unknown and we do a redirect again
84282a60d03SNickeau        //
84382a60d03SNickeau        // We check then if the target starts with the base url
84482a60d03SNickeau        // if this is the case, it's valid
8455b0932efSgerardnico        if (!$isHttpUrl && strpos($targetIdOrUrl, DOKU_URL) === 0) {
8465b0932efSgerardnico            $isHttpUrl = true;
84782a60d03SNickeau        }
8485b0932efSgerardnico        if ($isHttpUrl) {
849c3437056SNickeau
850c3437056SNickeau            // defend against HTTP Response Splitting
851c3437056SNickeau            // https://owasp.org/www-community/attacks/HTTP_Response_Splitting
85204fd306cSNickeau            $targetUrl = stripctl($targetIdOrUrl);
853c3437056SNickeau
854c3437056SNickeau        } else {
855c3437056SNickeau
856c3437056SNickeau
857c3437056SNickeau            // Explode the page ID and the anchor (#)
85804fd306cSNickeau            $link = explode('#', $targetIdOrUrl, 2);
859c3437056SNickeau
86011d09b86Sgerardnico            $url = UrlEndpoint::createDokuUrl();
861c3437056SNickeau
8625b0932efSgerardnico            $urlParams = [];
863c3437056SNickeau            // if this is search engine redirect
864c3437056SNickeau            if ($targetOrigin == self::TARGET_ORIGIN_SEARCH_ENGINE) {
865c3437056SNickeau                $replacementPart = array(':', '_', '-');
866c3437056SNickeau                $query = str_replace($replacementPart, ' ', $ID);
86711d09b86Sgerardnico                $url->setQueryParameter(ExecutionContext::DO_ATTRIBUTE, ExecutionContext::SEARCH_ACTION);
86811d09b86Sgerardnico                $url->setQueryParameter("q", $query);
869c3437056SNickeau            }
870c3437056SNickeau
8715b0932efSgerardnico            /**
8725b0932efSgerardnico             * Doing a permanent redirect with a added query string
8735b0932efSgerardnico             * create a new page url on the search engine
8745b0932efSgerardnico             *
8755b0932efSgerardnico             * ie
8765b0932efSgerardnico             * http://host/page
8775b0932efSgerardnico             * is not the same
8785b0932efSgerardnico             * than
8795b0932efSgerardnico             * http://host/page?whatever
8805b0932efSgerardnico             *
8815b0932efSgerardnico             * We can't pass query string otherwise, we get
88249b8fb24Sgerardnico             * the SEO warning / error
8835b0932efSgerardnico             * `Alternative page with proper canonical tag`
88411d09b86Sgerardnico             *
88511d09b86Sgerardnico             * Use HTTP X header for debug
8865b0932efSgerardnico             */
8875b0932efSgerardnico            if ($method !== self::REDIRECT_PERMANENT_METHOD) {
88811d09b86Sgerardnico                $url->setQueryParameter(action_plugin_combo_routermessage::ORIGIN_PAGE, $ID);
88911d09b86Sgerardnico                $url->setQueryParameter(action_plugin_combo_routermessage::ORIGIN_TYPE, $targetOrigin);
8905b0932efSgerardnico            }
8915b0932efSgerardnico
89211d09b86Sgerardnico            $id = $link[0];
89311d09b86Sgerardnico            $url->setQueryParameter(DokuwikiId::DOKUWIKI_ID_ATTRIBUTE, $id);
89470bbd7f1Sgerardnico            if (array_key_exists(1, $link)) {
89511d09b86Sgerardnico                $url->setFragment($link[1]);
896c3437056SNickeau            }
89711d09b86Sgerardnico            $targetUrl = $url->toAbsoluteUrlString();
898c3437056SNickeau
899c3437056SNickeau        }
900c3437056SNickeau
901c3437056SNickeau        /**
902c3437056SNickeau         * The dokuwiki function {@link send_redirect()}
903c3437056SNickeau         * set the `Location header` and in php, the header function
904c3437056SNickeau         * in this case change the status code to 302 Arghhhh.
905c3437056SNickeau         * The code below is adapted from this function {@link send_redirect()}
906c3437056SNickeau         */
907c3437056SNickeau        global $MSG; // are there any undisplayed messages? keep them in session for display
908c3437056SNickeau        if (isset($MSG) && count($MSG) && !defined('NOSESSION')) {
909c3437056SNickeau            //reopen session, store data and close session again
910c3437056SNickeau            @session_start();
911c3437056SNickeau            $_SESSION[DOKU_COOKIE]['msg'] = $MSG;
912c3437056SNickeau        }
913c3437056SNickeau        session_write_close(); // always close the session
914c3437056SNickeau
915c3437056SNickeau        switch ($method) {
9165b0932efSgerardnico
917c3437056SNickeau            case self::REDIRECT_PERMANENT_METHOD:
91804fd306cSNickeau                ExecutionContext::getActualOrCreateFromEnv()
91904fd306cSNickeau                    ->response()
92004fd306cSNickeau                    ->setStatus(HttpResponseStatus::PERMANENT_REDIRECT)
921c3437056SNickeau                    ->addHeader(self::LOCATION_HEADER_PREFIX . $targetUrl)
92204fd306cSNickeau                    ->end();
923c3437056SNickeau                return true;
9245b0932efSgerardnico
925c3437056SNickeau            case self::REDIRECT_NOTFOUND_METHOD:
926c3437056SNickeau
9275b0932efSgerardnico
928c3437056SNickeau                // Empty 404 body to not get the standard 404 page of the browser
929c3437056SNickeau                // but a blank page to avoid a sort of FOUC.
930c3437056SNickeau                // ie the user see a page briefly
93104fd306cSNickeau                ExecutionContext::getActualOrCreateFromEnv()
93204fd306cSNickeau                    ->response()
93304fd306cSNickeau                    ->setStatus(HttpResponseStatus::NOT_FOUND)
934c3437056SNickeau                    ->addHeader(self::REFRESH_HEADER_PREFIX . $targetUrl)
93504fd306cSNickeau                    ->setBody(self::PAGE_404, Mime::getHtml())
93604fd306cSNickeau                    ->end();
937c3437056SNickeau                return true;
938c3437056SNickeau
939c3437056SNickeau            default:
940c3437056SNickeau                LogUtility::msg("The method ($method) is not an http redirection");
941c3437056SNickeau                return false;
942c3437056SNickeau        }
943c3437056SNickeau
944c3437056SNickeau
945c3437056SNickeau    }
946c3437056SNickeau
947c3437056SNickeau    /**
948c3437056SNickeau     * @param $id
949c3437056SNickeau     * @return array
950c3437056SNickeau     */
951c3437056SNickeau    private
952c3437056SNickeau    function getBestPage($id): array
953c3437056SNickeau    {
954c3437056SNickeau
955c3437056SNickeau        // The return parameters
956c3437056SNickeau        $bestPageId = null;
957c3437056SNickeau        $scorePageName = null;
958c3437056SNickeau
959c3437056SNickeau        // Get Score from a page
960c3437056SNickeau        $pageName = noNS($id);
961c3437056SNickeau        $pagesWithSameName = ft_pageLookup($pageName);
962c3437056SNickeau        if (count($pagesWithSameName) > 0) {
963c3437056SNickeau
964c3437056SNickeau            // Search same namespace in the page found than in the Id page asked.
965c3437056SNickeau            $bestNbWordFound = 0;
966c3437056SNickeau
967c3437056SNickeau
968c3437056SNickeau            $wordsInPageSourceId = explode(':', $id);
969c3437056SNickeau            foreach ($pagesWithSameName as $targetPageId => $title) {
970c3437056SNickeau
971c3437056SNickeau                // Nb of word found in the target page id
972c3437056SNickeau                // that are in the source page id
973c3437056SNickeau                $nbWordFound = 0;
974c3437056SNickeau                foreach ($wordsInPageSourceId as $word) {
975c3437056SNickeau                    $nbWordFound = $nbWordFound + substr_count($targetPageId, $word);
976c3437056SNickeau                }
977c3437056SNickeau
978c3437056SNickeau                if ($bestPageId == null) {
979c3437056SNickeau
980c3437056SNickeau                    $bestNbWordFound = $nbWordFound;
981c3437056SNickeau                    $bestPageId = $targetPageId;
982c3437056SNickeau
983c3437056SNickeau                } else {
984c3437056SNickeau
985c3437056SNickeau                    if ($nbWordFound >= $bestNbWordFound && strlen($bestPageId) > strlen($targetPageId)) {
986c3437056SNickeau
987c3437056SNickeau                        $bestNbWordFound = $nbWordFound;
988c3437056SNickeau                        $bestPageId = $targetPageId;
989c3437056SNickeau
990c3437056SNickeau                    }
991c3437056SNickeau
992c3437056SNickeau                }
993c3437056SNickeau
994c3437056SNickeau            }
995c3437056SNickeau            $scorePageName = $this->getConf('WeightFactorForSamePageName') + ($bestNbWordFound - 1) * $this->getConf('WeightFactorForSameNamespace');
996c3437056SNickeau            return array(
997c3437056SNickeau                'id' => $bestPageId,
998c3437056SNickeau                'score' => $scorePageName);
999c3437056SNickeau        }
1000c3437056SNickeau        return array(
1001c3437056SNickeau            'id' => $bestPageId,
1002c3437056SNickeau            'score' => $scorePageName
1003c3437056SNickeau        );
1004c3437056SNickeau
1005c3437056SNickeau    }
1006c3437056SNickeau
1007c3437056SNickeau
1008c3437056SNickeau    /**
1009c3437056SNickeau     * Redirect to the search engine
1010c3437056SNickeau     */
1011c3437056SNickeau    private
1012c3437056SNickeau    function redirectToSearchEngine()
1013c3437056SNickeau    {
1014c3437056SNickeau
1015c3437056SNickeau        global $ID;
1016c3437056SNickeau        $this->performNotFoundRedirect($ID, self::TARGET_ORIGIN_SEARCH_ENGINE);
1017c3437056SNickeau
1018c3437056SNickeau    }
1019c3437056SNickeau
1020c3437056SNickeau
1021c3437056SNickeau    /**
1022c3437056SNickeau     *
1023c3437056SNickeau     *   * For a conf file, it will update the Redirection Action Data as Referrer, Count Of Redirection, Redirection Date
1024c3437056SNickeau     *   * For a SQlite database, it will add a row into the log
1025c3437056SNickeau     *
1026c3437056SNickeau     * @param string $sourcePageId
1027c3437056SNickeau     * @param $targetPageId
1028c3437056SNickeau     * @param $algorithmic
1029c3437056SNickeau     * @param $method - http or rewrite
1030c3437056SNickeau     */
1031c3437056SNickeau    function logRedirection(string $sourcePageId, $targetPageId, $algorithmic, $method)
1032c3437056SNickeau    {
1033c3437056SNickeau
1034c3437056SNickeau        $row = array(
1035c3437056SNickeau            "TIMESTAMP" => date("c"),
1036c3437056SNickeau            "SOURCE" => $sourcePageId,
1037c3437056SNickeau            "TARGET" => $targetPageId,
103870bbd7f1Sgerardnico            "REFERRER" => $_SERVER['HTTP_REFERER'] ?? null,
1039c3437056SNickeau            "TYPE" => $algorithmic,
1040c3437056SNickeau            "METHOD" => $method
1041c3437056SNickeau        );
1042c3437056SNickeau        $request = Sqlite::createOrGetBackendSqlite()
1043c3437056SNickeau            ->createRequest()
1044c3437056SNickeau            ->setTableRow('redirections_log', $row);
1045c3437056SNickeau        try {
1046c3437056SNickeau            $request
1047c3437056SNickeau                ->execute();
104804fd306cSNickeau        } catch (ExceptionCompile $e) {
1049c3437056SNickeau            LogUtility::msg("Redirection Log Insert Error. {$e->getMessage()}");
1050c3437056SNickeau        } finally {
1051c3437056SNickeau            $request->close();
1052c3437056SNickeau        }
1053c3437056SNickeau
1054c3437056SNickeau
1055c3437056SNickeau    }
1056c3437056SNickeau
1057c3437056SNickeau    /**
1058c3437056SNickeau     * This function check if there is a redirection declared
1059c3437056SNickeau     * in the redirection table
1060c3437056SNickeau     * @return bool - true if a rewrite or redirection occurs
1061c3437056SNickeau     * @throws Exception
1062c3437056SNickeau     */
1063c3437056SNickeau    private function processingPageRules(): bool
1064c3437056SNickeau    {
1065c3437056SNickeau        global $ID;
1066c3437056SNickeau
1067c3437056SNickeau        $calculatedTarget = null;
1068c3437056SNickeau        $ruleMatcher = null; // Used in a warning message if the target page does not exist
1069c3437056SNickeau        // Known redirection in the table
1070c3437056SNickeau        // Get the page from redirection data
1071c3437056SNickeau        $rules = $this->pageRules->getRules();
1072c3437056SNickeau        foreach ($rules as $rule) {
1073c3437056SNickeau
1074c3437056SNickeau            $ruleMatcher = strtolower($rule[PageRules::MATCHER_NAME]);
1075c3437056SNickeau            $ruleTarget = $rule[PageRules::TARGET_NAME];
1076c3437056SNickeau
1077c3437056SNickeau            // Glob to Rexgexp
107804fd306cSNickeau            $regexpPattern = '/' . str_replace("*", "(.*)", $ruleMatcher) . '/i';
1079c3437056SNickeau
1080c3437056SNickeau            // Match ?
1081c3437056SNickeau            // https://www.php.net/manual/en/function.preg-match.php
108286867397Sgerardnico            $pregMatchResult = @preg_match($regexpPattern, $ID, $matches);
108386867397Sgerardnico            if ($pregMatchResult === false) {
108486867397Sgerardnico                // The `if` to take into account this problem
108586867397Sgerardnico                // PHP Warning:  preg_match(): Unknown modifier 'd' in /opt/www/datacadamia.com/lib/plugins/combo/action/router.php on line 972
108686867397Sgerardnico                LogUtility::log2file("processing Page Rules An error occurred with the pattern ($regexpPattern)", LogUtility::LVL_MSG_WARNING);
108786867397Sgerardnico                return false;
108886867397Sgerardnico            }
108986867397Sgerardnico            if ($pregMatchResult) {
1090c3437056SNickeau                $calculatedTarget = $ruleTarget;
1091c3437056SNickeau                foreach ($matches as $key => $match) {
1092c3437056SNickeau                    if ($key == 0) {
1093c3437056SNickeau                        continue;
1094c3437056SNickeau                    } else {
1095c3437056SNickeau                        $calculatedTarget = str_replace('$' . $key, $match, $calculatedTarget);
1096c3437056SNickeau                    }
1097c3437056SNickeau                }
1098c3437056SNickeau                break;
1099c3437056SNickeau            }
1100c3437056SNickeau        }
1101c3437056SNickeau
1102c3437056SNickeau        if ($calculatedTarget == null) {
1103c3437056SNickeau            return false;
1104c3437056SNickeau        }
1105c3437056SNickeau
1106c3437056SNickeau        // If this is an external redirect (other domain)
110704fd306cSNickeau        try {
110804fd306cSNickeau            $isHttpUrl = Url::createFromString($calculatedTarget)->isHttpUrl();
110904fd306cSNickeau        } catch (ExceptionBadSyntax $e) {
111004fd306cSNickeau            $isHttpUrl = false;
111104fd306cSNickeau        }
111204fd306cSNickeau        if ($isHttpUrl) {
1113c3437056SNickeau            $this->executeHttpRedirect($calculatedTarget, self::TARGET_ORIGIN_PAGE_RULES, self::REDIRECT_PERMANENT_METHOD);
1114c3437056SNickeau            return true;
1115c3437056SNickeau        }
1116c3437056SNickeau
1117c3437056SNickeau        // If the page exist
1118c3437056SNickeau        if (page_exists($calculatedTarget)) {
1119c3437056SNickeau
1120c3437056SNickeau            // This is DokuWiki Id and should always be lowercase
1121c3437056SNickeau            // The page rule may have change that
1122c3437056SNickeau            $calculatedTarget = strtolower($calculatedTarget);
1123d0abe7fcSgerardnico            $res = $this->executeHttpRedirect($calculatedTarget, self::TARGET_ORIGIN_PAGE_RULES, self::REDIRECT_PERMANENT_METHOD);
1124c3437056SNickeau            if ($res) {
1125c3437056SNickeau                return true;
1126c3437056SNickeau            } else {
1127c3437056SNickeau                return false;
1128c3437056SNickeau            }
1129c3437056SNickeau
1130c3437056SNickeau        } else {
1131c3437056SNickeau
1132c3437056SNickeau            LogUtility::msg("The calculated target page ($calculatedTarget) (for the non-existing page `$ID` with the matcher `$ruleMatcher`) does not exist", LogUtility::LVL_MSG_ERROR);
1133c3437056SNickeau            return false;
1134c3437056SNickeau
1135c3437056SNickeau        }
1136c3437056SNickeau
1137c3437056SNickeau    }
1138c3437056SNickeau
1139c3437056SNickeau    private function performNotFoundRedirect(string $targetId, string $origin): bool
1140c3437056SNickeau    {
1141c3437056SNickeau        return $this->executeHttpRedirect($targetId, $origin, self::REDIRECT_NOTFOUND_METHOD);
1142c3437056SNickeau    }
1143c3437056SNickeau
1144c3437056SNickeau
1145c3437056SNickeau}
1146