xref: /plugin/combo/action/router.php (revision 70bbd7f1f72440223cc13f3495efdcb2b0a11514)
1c3437056SNickeau<?php
2c3437056SNickeau
3c3437056SNickeau
4c3437056SNickeauuse ComboStrap\DatabasePageRow;
504fd306cSNickeauuse ComboStrap\ExceptionBadArgument;
604fd306cSNickeauuse ComboStrap\ExceptionBadSyntax;
704fd306cSNickeauuse ComboStrap\ExceptionCompile;
804fd306cSNickeauuse ComboStrap\ExceptionSqliteNotAvailable;
904fd306cSNickeauuse ComboStrap\ExecutionContext;
1004fd306cSNickeauuse ComboStrap\FileSystems;
11c3437056SNickeauuse ComboStrap\HttpResponse;
1204fd306cSNickeauuse ComboStrap\HttpResponseStatus;
13c3437056SNickeauuse ComboStrap\Identity;
14c3437056SNickeauuse ComboStrap\LogUtility;
1504fd306cSNickeauuse ComboStrap\MarkupPath;
1604fd306cSNickeauuse ComboStrap\Meta\Field\AliasType;
17c3437056SNickeauuse ComboStrap\Mime;
18c3437056SNickeauuse ComboStrap\PageId;
19c3437056SNickeauuse ComboStrap\PageRules;
20c3437056SNickeauuse ComboStrap\PageUrlPath;
2182a60d03SNickeauuse ComboStrap\PageUrlType;
2204fd306cSNickeauuse ComboStrap\RouterBestEndPage;
23c3437056SNickeauuse ComboStrap\Site;
2404fd306cSNickeauuse ComboStrap\SiteConfig;
25c3437056SNickeauuse ComboStrap\Sqlite;
2604fd306cSNickeauuse ComboStrap\Web\Url;
2754743e42Sgerardnicouse ComboStrap\Web\UrlRewrite;
2804fd306cSNickeauuse ComboStrap\WikiPath;
29c3437056SNickeau
3004fd306cSNickeaurequire_once(__DIR__ . '/../vendor/autoload.php');
31c3437056SNickeau
32c3437056SNickeau/**
33c3437056SNickeau * Class action_plugin_combo_url
34c3437056SNickeau *
35c3437056SNickeau * The actual URL manager
36c3437056SNickeau *
37c3437056SNickeau *
38c3437056SNickeau */
39c3437056SNickeauclass action_plugin_combo_router extends DokuWiki_Action_Plugin
40c3437056SNickeau{
41c3437056SNickeau
42c3437056SNickeau    /**
43c3437056SNickeau     * @deprecated
44c3437056SNickeau     */
45c3437056SNickeau    const URL_MANAGER_ENABLE_CONF = "enableUrlManager";
46c3437056SNickeau    const ROUTER_ENABLE_CONF = "enableRouter";
47c3437056SNickeau
48c3437056SNickeau    // The redirect type
49c3437056SNickeau    const REDIRECT_TRANSPARENT_METHOD = 'transparent'; // was (Id)
50c3437056SNickeau    // For permanent, see https://developers.google.com/search/docs/advanced/crawling/301-redirects
51c3437056SNickeau    const REDIRECT_PERMANENT_METHOD = 'permanent'; // was `Http` (301)
52c3437056SNickeau    const REDIRECT_NOTFOUND_METHOD = "notfound"; // 404 (See other) (when best page name is calculated)
53c3437056SNickeau
54c3437056SNickeau    public const PERMANENT_REDIRECT_CANONICAL = "permanent:redirect";
55c3437056SNickeau
56c3437056SNickeau    // Where the target id value comes from
57c3437056SNickeau    const TARGET_ORIGIN_WELL_KNOWN = 'well-known';
58c3437056SNickeau    const TARGET_ORIGIN_PAGE_RULES = 'pageRules';
59c3437056SNickeau    /**
60c3437056SNickeau     * Named Permalink (canonical)
61c3437056SNickeau     */
62c3437056SNickeau    const TARGET_ORIGIN_CANONICAL = 'canonical';
63c3437056SNickeau    const TARGET_ORIGIN_ALIAS = 'alias';
64c3437056SNickeau    /**
65c3437056SNickeau     * Identifier Permalink (full page id)
66c3437056SNickeau     */
67c3437056SNickeau    const TARGET_ORIGIN_PERMALINK = "permalink";
68c3437056SNickeau    /**
69c3437056SNickeau     * Extended Permalink (abbreviated page id at the end)
70c3437056SNickeau     */
71c3437056SNickeau    const TARGET_ORIGIN_PERMALINK_EXTENDED = "extendedPermalink";
72c3437056SNickeau    const TARGET_ORIGIN_START_PAGE = 'startPage';
73c3437056SNickeau    const TARGET_ORIGIN_BEST_PAGE_NAME = 'bestPageName';
74c3437056SNickeau    const TARGET_ORIGIN_BEST_NAMESPACE = 'bestNamespace';
75c3437056SNickeau    const TARGET_ORIGIN_SEARCH_ENGINE = 'searchEngine';
76c3437056SNickeau    const TARGET_ORIGIN_BEST_END_PAGE_NAME = 'bestEndPageName';
77c3437056SNickeau    const TARGET_ORIGIN_SHADOW_BANNED = "shadowBanned";
78c3437056SNickeau
79c3437056SNickeau
80c3437056SNickeau    // The constant parameters
81c3437056SNickeau    const GO_TO_SEARCH_ENGINE = 'GoToSearchEngine';
82c3437056SNickeau    const GO_TO_BEST_NAMESPACE = 'GoToBestNamespace';
83c3437056SNickeau    const GO_TO_BEST_PAGE_NAME = 'GoToBestPageName';
84c3437056SNickeau    const GO_TO_BEST_END_PAGE_NAME = 'GoToBestEndPageName';
85c3437056SNickeau    const GO_TO_NS_START_PAGE = 'GoToNsStartPage';
86c3437056SNickeau    const GO_TO_EDIT_MODE = 'GoToEditMode';
87c3437056SNickeau    const NOTHING = 'Nothing';
88c3437056SNickeau
89c3437056SNickeau    /** @var string - a name used in log and other places */
90c3437056SNickeau    const NAME = 'Url Manager';
91c3437056SNickeau    const CANONICAL = 'router';
92c3437056SNickeau    const PAGE_404 = "<html lang=\"en\"><body></body></html>";
93c3437056SNickeau    const REFRESH_HEADER_NAME = "Refresh";
94c3437056SNickeau    const REFRESH_HEADER_PREFIX = self::REFRESH_HEADER_NAME . ': 0;url=';
9504fd306cSNickeau    const LOCATION_HEADER_PREFIX = HttpResponse::LOCATION_HEADER_NAME . ": ";
96c3437056SNickeau    public const URL_MANAGER_NAME = "Router";
97c3437056SNickeau
98c3437056SNickeau
99c3437056SNickeau    /**
100c3437056SNickeau     * @var PageRules
101c3437056SNickeau     */
102c3437056SNickeau    private $pageRules;
103c3437056SNickeau
104c3437056SNickeau
105c3437056SNickeau    function __construct()
106c3437056SNickeau    {
107c3437056SNickeau        // enable direct access to language strings
108c3437056SNickeau        // ie $this->lang
109c3437056SNickeau        $this->setupLocale();
110c3437056SNickeau
111c3437056SNickeau    }
112c3437056SNickeau
113c3437056SNickeau    /**
11404fd306cSNickeau     * @param string $refreshHeader
115c3437056SNickeau     * @return false|string
116c3437056SNickeau     */
11704fd306cSNickeau    public static function getUrlFromRefresh(string $refreshHeader)
118c3437056SNickeau    {
119c3437056SNickeau        return substr($refreshHeader, strlen(action_plugin_combo_router::REFRESH_HEADER_PREFIX));
120c3437056SNickeau    }
121c3437056SNickeau
122c3437056SNickeau    public static function getUrlFromLocation($refreshHeader)
123c3437056SNickeau    {
124c3437056SNickeau        return substr($refreshHeader, strlen(action_plugin_combo_router::LOCATION_HEADER_PREFIX));
125c3437056SNickeau    }
126c3437056SNickeau
127c3437056SNickeau    /**
128c3437056SNickeau     * @return array|mixed|string|string[]
129c3437056SNickeau     *
130c3437056SNickeau     * Unfortunately, DOKUWIKI_STARTED is not the first event
131c3437056SNickeau     * The id may have been changed by
132c3437056SNickeau     * {@link action_plugin_combo_metalang::load_lang()}
133c3437056SNickeau     * function, that's why we have this function
134c3437056SNickeau     * to get the original requested id
135c3437056SNickeau     */
136c3437056SNickeau    private static function getOriginalIdFromRequest()
137c3437056SNickeau    {
138f49666c9Sgerardnico        $originalId = $_GET["id"] ?? null;
139f49666c9Sgerardnico        if ($originalId === null) {
140f49666c9Sgerardnico            return null;
141f49666c9Sgerardnico        }
14204fd306cSNickeau        return str_replace("/", WikiPath::NAMESPACE_SEPARATOR_DOUBLE_POINT, $originalId);
143c3437056SNickeau    }
144c3437056SNickeau
145c3437056SNickeau    /**
146c3437056SNickeau     * Determine if the request should be banned based on the id
147c3437056SNickeau     *
148c3437056SNickeau     * @param string $id
149c3437056SNickeau     * @return bool
150c3437056SNickeau     *
151c3437056SNickeau     * See also {@link https://perishablepress.com/7g-firewall/#features}
152c3437056SNickeau     * for blocking rules on http request data such as:
153c3437056SNickeau     *   * query_string
154c3437056SNickeau     *   * user_agent,
155c3437056SNickeau     *   * remote host
156c3437056SNickeau     */
157c3437056SNickeau    public static function isShadowBanned(string $id): bool
158c3437056SNickeau    {
159c3437056SNickeau        /**
160c3437056SNickeau         * ie
161c3437056SNickeau         * wp-json:api:flutter_woo:config_file
162c3437056SNickeau         * wp-content:plugins:wpdiscuz:themes:default:style-rtl.css
163c3437056SNickeau         * wp-admin
164c3437056SNickeau         * 2020:wp-includes:wlwmanifest.xml
165c3437056SNickeau         * wp-content:start
166c3437056SNickeau         * wp-admin:css:start
167c3437056SNickeau         * sito:wp-includes:wlwmanifest.xml
168c3437056SNickeau         * site:wp-includes:wlwmanifest.xml
169c3437056SNickeau         * cms:wp-includes:wlwmanifest.xml
170c3437056SNickeau         * test:wp-includes:wlwmanifest.xml
171c3437056SNickeau         * media:wp-includes:wlwmanifest.xml
172c3437056SNickeau         * wp2:wp-includes:wlwmanifest.xml
173c3437056SNickeau         * 2019:wp-includes:wlwmanifest.xml
174c3437056SNickeau         * shop:wp-includes:wlwmanifest.xml
175c3437056SNickeau         * wp1:wp-includes:wlwmanifest.xml
176c3437056SNickeau         * news:wp-includes:wlwmanifest.xml
177c3437056SNickeau         * 2018:wp-includes:wlwmanifest.xml
178c3437056SNickeau         */
179c3437056SNickeau        if (strpos($id, 'wp-') !== false) {
180c3437056SNickeau            return true;
181c3437056SNickeau        }
182c3437056SNickeau
183c3437056SNickeau        /**
184c3437056SNickeau         * 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
185c3437056SNickeau         * db:oracle:999999.9:union:all:select_null:from_dual
186c3437056SNickeau         * db:oracle:999999.9:union:all:select_null:from_dual_and_0_0
187c3437056SNickeau         */
188c3437056SNickeau        if (preg_match('/_chr_|_0_0/', $id) === 1) {
189c3437056SNickeau            return true;
190c3437056SNickeau        }
191c3437056SNickeau
192c3437056SNickeau
193c3437056SNickeau        /**
194c3437056SNickeau         * ie
195c3437056SNickeau         * git:objects:
196c3437056SNickeau         * git:refs:heads:stable
197c3437056SNickeau         * git:logs:refs:heads:main
198c3437056SNickeau         * git:logs:refs:heads:stable
199c3437056SNickeau         * git:hooks:pre-push.sample
200c3437056SNickeau         * git:hooks:pre-receive.sample
201c3437056SNickeau         */
202c3437056SNickeau        if (strpos($id, "git:") === 0) {
203c3437056SNickeau            return true;
204c3437056SNickeau        }
205c3437056SNickeau
206c3437056SNickeau        return false;
207c3437056SNickeau
208c3437056SNickeau    }
209c3437056SNickeau
210c3437056SNickeau    /**
211c3437056SNickeau     * @param string $id
212c3437056SNickeau     * @return bool
213c3437056SNickeau     * well-known:traffic-advice = https://github.com/buettner/private-prefetch-proxy/blob/main/traffic-advice.md
214c3437056SNickeau     * .well-known/security.txt, id=well-known:security.txt = https://securitytxt.org/
215c3437056SNickeau     * well-known:dnt-policy.txt
216c3437056SNickeau     */
217c3437056SNickeau    public static function isWellKnownFile(string $id): bool
218c3437056SNickeau    {
219c3437056SNickeau        return strpos($id, "well-known") === 0;
220c3437056SNickeau    }
221c3437056SNickeau
222c3437056SNickeau
223c3437056SNickeau    function register(Doku_Event_Handler $controller)
224c3437056SNickeau    {
225c3437056SNickeau
22604fd306cSNickeau        if (SiteConfig::getConfValue(self::ROUTER_ENABLE_CONF, 1)) {
22704fd306cSNickeau
228c3437056SNickeau            /**
229c3437056SNickeau             * This will call the function {@link action_plugin_combo_router::_router()}
230c3437056SNickeau             * The event is not DOKUWIKI_STARTED because this is not the first one
231c3437056SNickeau             *
232c3437056SNickeau             * https://www.dokuwiki.org/devel:event:init_lang_load
233c3437056SNickeau             */
234c3437056SNickeau            $controller->register_hook('DOKUWIKI_STARTED',
23504fd306cSNickeau                'BEFORE',
236c3437056SNickeau                $this,
237c3437056SNickeau                'router',
238c3437056SNickeau                array());
239c3437056SNickeau
240c3437056SNickeau            /**
241c3437056SNickeau             * This is the real first call of Dokuwiki
242c3437056SNickeau             * Unfortunately, it does not create the environment
243c3437056SNickeau             * We just ban to spare server resources
244c3437056SNickeau             *
245c3437056SNickeau             * https://www.dokuwiki.org/devel:event:init_lang_load
246c3437056SNickeau             */
247c3437056SNickeau            $controller->register_hook('INIT_LANG_LOAD', 'BEFORE', $this, 'ban', array());
248c3437056SNickeau
249c3437056SNickeau        }
250c3437056SNickeau
251c3437056SNickeau
252c3437056SNickeau    }
253c3437056SNickeau
254c3437056SNickeau    /**
255c3437056SNickeau     *
256c3437056SNickeau     * We have created a spacial ban function that is
257c3437056SNickeau     * called before the first function
258c3437056SNickeau     * {@link action_plugin_combo_metalang::load_lang()}
259c3437056SNickeau     * to spare CPU.
260c3437056SNickeau     *
261c3437056SNickeau     * @param $event
262c3437056SNickeau     * @throws Exception
263c3437056SNickeau     */
264c3437056SNickeau    function ban(&$event)
265c3437056SNickeau    {
266c3437056SNickeau
267c3437056SNickeau        $id = self::getOriginalIdFromRequest();
26806ecf9e7Sgerardnico        if ($id === null) {
26906ecf9e7Sgerardnico            return;
27006ecf9e7Sgerardnico        }
27104fd306cSNickeau        $page = MarkupPath::createMarkupFromId($id);
27204fd306cSNickeau        if (!FileSystems::exists($page)) {
273c3437056SNickeau            // Well known
274c3437056SNickeau            if (self::isWellKnownFile($id)) {
275c3437056SNickeau                $this->logRedirection($id, "", self::TARGET_ORIGIN_WELL_KNOWN, self::REDIRECT_NOTFOUND_METHOD);
27604fd306cSNickeau                ExecutionContext::getActualOrCreateFromEnv()
27704fd306cSNickeau                    ->response()
27804fd306cSNickeau                    ->setStatus(HttpResponseStatus::NOT_FOUND)
27904fd306cSNickeau                    ->end();
280c3437056SNickeau                return;
281c3437056SNickeau            }
282c3437056SNickeau
283c3437056SNickeau            // Shadow banned
284c3437056SNickeau            if (self::isShadowBanned($id)) {
28504fd306cSNickeau                $webSiteHomePage = Site::getIndexPageName();
286c3437056SNickeau                $this->executeTransparentRedirect($webSiteHomePage, self::TARGET_ORIGIN_SHADOW_BANNED);
287c3437056SNickeau            }
288c3437056SNickeau        }
289c3437056SNickeau    }
290c3437056SNickeau
291c3437056SNickeau    /**
292c3437056SNickeau     * @param $event Doku_Event
293c3437056SNickeau     * @param $param
294c3437056SNickeau     * @return void
295c3437056SNickeau     * @throws Exception
296c3437056SNickeau     */
297c3437056SNickeau    function router(&$event, $param)
298c3437056SNickeau    {
299c3437056SNickeau
30004fd306cSNickeau        /**
30104fd306cSNickeau         * Just the {@link ExecutionContext::SHOW_ACTION}
30204fd306cSNickeau         * may be redirected
30304fd306cSNickeau         */
30404fd306cSNickeau        $executionContext = ExecutionContext::getActualOrCreateFromEnv();
30504fd306cSNickeau        if ($executionContext->getExecutingAction() !== ExecutionContext::SHOW_ACTION) {
30604fd306cSNickeau            return;
30704fd306cSNickeau        }
308c3437056SNickeau
30954743e42Sgerardnico        $urlRewrite = Site::getUrlRewrite();
31054743e42Sgerardnico        if ($urlRewrite == UrlRewrite::VALUE_DOKU_REWRITE) {
31154743e42Sgerardnico            UrlRewrite::sendErrorMessage();
31254743e42Sgerardnico            return;
31354743e42Sgerardnico        }
314c3437056SNickeau
315c3437056SNickeau        global $ID;
316c3437056SNickeau
317c3437056SNickeau        /**
318c3437056SNickeau         * Without SQLite, this module does not work further
319c3437056SNickeau         */
32004fd306cSNickeau        try {
32104fd306cSNickeau            Sqlite::createOrGetSqlite();
32204fd306cSNickeau        } catch (ExceptionSqliteNotAvailable $e) {
323c3437056SNickeau            return;
324c3437056SNickeau        }
325c3437056SNickeau
32604fd306cSNickeau        $this->pageRules = new PageRules();
32704fd306cSNickeau
32804fd306cSNickeau
329c3437056SNickeau        /**
330c3437056SNickeau         * Unfortunately, DOKUWIKI_STARTED is not the first event
331c3437056SNickeau         * The id may have been changed by
33204fd306cSNickeau         * {@link action_plugin_combo_lang::load_lang()}
333c3437056SNickeau         * function, that's why we check against the {@link $_REQUEST}
334c3437056SNickeau         * and not the global ID
335c3437056SNickeau         */
336c3437056SNickeau        $originalId = self::getOriginalIdFromRequest();
337c3437056SNickeau
338c3437056SNickeau        /**
339c3437056SNickeau         * Page is an existing id ?
340c3437056SNickeau         */
34104fd306cSNickeau        $requestedMarkupPath = MarkupPath::createMarkupFromId($ID);
34204fd306cSNickeau        if (FileSystems::exists($requestedMarkupPath)) {
343c3437056SNickeau
344c3437056SNickeau            /**
345c3437056SNickeau             * If this is not the root home page
346c3437056SNickeau             * and if the canonical id is the not the same,
347c3437056SNickeau             * and if this is not a historical page (revision)
348c3437056SNickeau             * redirect
349c3437056SNickeau             */
350c3437056SNickeau            if (
35104fd306cSNickeau                $originalId !== $requestedMarkupPath->getUrlId() // The id may have been changed
35204fd306cSNickeau                && $ID != Site::getIndexPageName()
353c3437056SNickeau                && !isset($_REQUEST["rev"])
354c3437056SNickeau            ) {
3554cadd4f8SNickeau                /**
3564cadd4f8SNickeau                 * TODO: When saving for the first time, the page is not stored in the database
3574cadd4f8SNickeau                 *   but that's not the case actually
3584cadd4f8SNickeau                 */
35904fd306cSNickeau                $databasePageRow = $requestedMarkupPath->getDatabasePage();
36004fd306cSNickeau                if ($databasePageRow->exists()) {
36104fd306cSNickeau                    /**
36204fd306cSNickeau                     * A move may leave the database in a bad state,
36304fd306cSNickeau                     * unfortunately (ie page is not in index, unable to update, ...)
36404fd306cSNickeau                     * We test therefore if the database page id exists
36504fd306cSNickeau                     */
36604fd306cSNickeau                    $targetPageId = $databasePageRow->getFromRow("id");
36704fd306cSNickeau                    $targetPath = WikiPath::createMarkupPathFromId($targetPageId);
36804fd306cSNickeau                    if (FileSystems::exists($targetPath)) {
369c3437056SNickeau                        $this->executePermanentRedirect(
37004fd306cSNickeau                            $requestedMarkupPath->getCanonicalUrl()->toAbsoluteUrlString(),
371c3437056SNickeau                            self::TARGET_ORIGIN_PERMALINK_EXTENDED
372c3437056SNickeau                        );
373c3437056SNickeau                    }
3744cadd4f8SNickeau                }
37504fd306cSNickeau            }
376c3437056SNickeau            return;
377c3437056SNickeau        }
378c3437056SNickeau
379c3437056SNickeau
380c3437056SNickeau        $identifier = $ID;
381c3437056SNickeau
382c3437056SNickeau
383c3437056SNickeau        /**
384c3437056SNickeau         * Page Id Website / root Permalink ?
385c3437056SNickeau         */
38604fd306cSNickeau        $shortPageId = PageUrlPath::getShortEncodedPageIdFromUrlId($requestedMarkupPath->getPathObject()->getLastNameWithoutExtension());
387c3437056SNickeau        if ($shortPageId !== null) {
388c3437056SNickeau            $pageId = PageUrlPath::decodePageId($shortPageId);
38904fd306cSNickeau            if ($requestedMarkupPath->getParent() === null && $pageId !== null) {
39004fd306cSNickeau                $page = DatabasePageRow::createFromPageId($pageId)->getMarkupPath();
391c3437056SNickeau                if ($page !== null && $page->exists()) {
39282a60d03SNickeau                    $this->executePermanentRedirect(
39304fd306cSNickeau                        $page->getCanonicalUrl()->toAbsoluteUrlString(),
39482a60d03SNickeau                        self::TARGET_ORIGIN_PERMALINK
39582a60d03SNickeau                    );
396c3437056SNickeau                }
397c3437056SNickeau            }
398c3437056SNickeau
399c3437056SNickeau            /**
400c3437056SNickeau             * Page Id Abbr ?
401c3437056SNickeau             * {@link PageUrlType::CONF_CANONICAL_URL_TYPE}
402c3437056SNickeau             */
403c3437056SNickeau            if (
404c3437056SNickeau                $pageId !== null
405c3437056SNickeau            ) {
40604fd306cSNickeau                $page = DatabasePageRow::createFromPageIdAbbr($pageId)->getMarkupPath();
407c3437056SNickeau                if ($page === null) {
408c3437056SNickeau                    // or the length of the abbr has changed
40904fd306cSNickeau                    $canonicalDatabasePage = new DatabasePageRow();
41004fd306cSNickeau                    $row = $canonicalDatabasePage->getDatabaseRowFromAttribute("substr(" . PageId::PROPERTY_NAME . ", 1, " . strlen($pageId) . ")", $pageId);
4114cadd4f8SNickeau                    if ($row !== null) {
41204fd306cSNickeau                        $canonicalDatabasePage->setRow($row);
41304fd306cSNickeau                        $page = $canonicalDatabasePage->getMarkupPath();
414c3437056SNickeau                    }
415c3437056SNickeau                }
416c3437056SNickeau                if ($page !== null && $page->exists()) {
417c3437056SNickeau                    /**
418c3437056SNickeau                     * If the url canonical id has changed, we show it
419c3437056SNickeau                     * to the writer by performing a permanent redirect
420c3437056SNickeau                     */
421c3437056SNickeau                    if ($identifier != $page->getUrlId()) {
422c3437056SNickeau                        // Google asks for a redirect
423c3437056SNickeau                        // https://developers.google.com/search/docs/advanced/crawling/301-redirects
424c3437056SNickeau                        // People access your site through several different URLs.
425c3437056SNickeau                        // If, for example, your home page can be reached in multiple ways
426c3437056SNickeau                        // (for instance, http://example.com/home, http://home.example.com, or http://www.example.com),
427c3437056SNickeau                        // it's a good idea to pick one of those URLs as your preferred (canonical) destination,
428c3437056SNickeau                        // and use redirects to send traffic from the other URLs to your preferred URL.
429c3437056SNickeau                        $this->executePermanentRedirect(
43004fd306cSNickeau                            $page->getCanonicalUrl()->toAbsoluteUrlString(),
431c3437056SNickeau                            self::TARGET_ORIGIN_PERMALINK_EXTENDED
432c3437056SNickeau                        );
433c3437056SNickeau                        return;
434c3437056SNickeau                    }
4354cadd4f8SNickeau
43604fd306cSNickeau                    $this->executeTransparentRedirect($page->getWikiId(), self::TARGET_ORIGIN_PERMALINK_EXTENDED);
437c3437056SNickeau                    return;
438c3437056SNickeau
439c3437056SNickeau                }
440c3437056SNickeau                // permanent url not yet in the database
441c3437056SNickeau                // Other permanent such as permanent canonical ?
442c3437056SNickeau                // We let the process go with the new identifier
443c3437056SNickeau
444c3437056SNickeau            }
445c3437056SNickeau
446c3437056SNickeau        }
447c3437056SNickeau
448c3437056SNickeau        // Global variable needed in the process
449c3437056SNickeau        global $conf;
450c3437056SNickeau
451c3437056SNickeau        /**
452c3437056SNickeau         * Identifier is a Canonical ?
453c3437056SNickeau         */
45404fd306cSNickeau        $canonicalDatabasePage = DatabasePageRow::createFromCanonical($identifier);
45504fd306cSNickeau        $canonicalPage = $canonicalDatabasePage->getMarkupPath();
45604fd306cSNickeau        if ($canonicalPage !== null && $canonicalPage->exists()) {
45782a60d03SNickeau            /**
45882a60d03SNickeau             * Does the canonical url is canonical name based
45982a60d03SNickeau             * ie {@link  PageUrlType::CONF_VALUE_CANONICAL_PATH}
46082a60d03SNickeau             */
46104fd306cSNickeau            if ($canonicalPage->getUrlId() === $identifier) {
46282a60d03SNickeau                $res = $this->executeTransparentRedirect(
46304fd306cSNickeau                    $canonicalPage->getWikiId(),
46482a60d03SNickeau                    self::TARGET_ORIGIN_CANONICAL
46582a60d03SNickeau                );
46682a60d03SNickeau            } else {
46782a60d03SNickeau                $res = $this->executePermanentRedirect(
46804fd306cSNickeau                    $canonicalPage->getWikiId(), // not the url because, it allows to add url query redirection property
46982a60d03SNickeau                    self::TARGET_ORIGIN_CANONICAL
47082a60d03SNickeau                );
47182a60d03SNickeau            }
472c3437056SNickeau            if ($res) {
473c3437056SNickeau                return;
474c3437056SNickeau            }
475c3437056SNickeau        }
476c3437056SNickeau
477c3437056SNickeau        /**
478c3437056SNickeau         * Identifier is an alias
479c3437056SNickeau         */
48004fd306cSNickeau        $aliasRequestedPage = DatabasePageRow::createFromAlias($identifier)->getMarkupPath();
481c3437056SNickeau        if (
48204fd306cSNickeau            $aliasRequestedPage !== null
48304fd306cSNickeau            && $aliasRequestedPage->exists()
484c3437056SNickeau            // The build alias is the file system metadata alias
485c3437056SNickeau            // it may be null if the replication in the database was not successful
48604fd306cSNickeau            && $aliasRequestedPage->getBuildAlias() !== null
487c3437056SNickeau        ) {
48804fd306cSNickeau            $buildAlias = $aliasRequestedPage->getBuildAlias();
489c3437056SNickeau            switch ($buildAlias->getType()) {
490c3437056SNickeau                case AliasType::REDIRECT:
49104fd306cSNickeau                    $res = $this->executePermanentRedirect($aliasRequestedPage->getCanonicalUrl()->toAbsoluteUrlString(), self::TARGET_ORIGIN_ALIAS);
492c3437056SNickeau                    if ($res) {
493c3437056SNickeau                        return;
494c3437056SNickeau                    }
495c3437056SNickeau                    break;
496c3437056SNickeau                case AliasType::SYNONYM:
49704fd306cSNickeau                    $res = $this->executeTransparentRedirect($aliasRequestedPage->getWikiId(), self::TARGET_ORIGIN_ALIAS);
498c3437056SNickeau                    if ($res) {
499c3437056SNickeau                        return;
500c3437056SNickeau                    }
501c3437056SNickeau                    break;
502c3437056SNickeau                default:
503c3437056SNickeau                    LogUtility::msg("The alias type ({$buildAlias->getType()}) is unknown. A permanent redirect was performed for the alias $identifier");
50404fd306cSNickeau                    $res = $this->executePermanentRedirect($aliasRequestedPage->getCanonicalUrl()->toAbsoluteUrlString(), self::TARGET_ORIGIN_ALIAS);
505c3437056SNickeau                    if ($res) {
506c3437056SNickeau                        return;
507c3437056SNickeau                    }
508c3437056SNickeau                    break;
509c3437056SNickeau            }
510c3437056SNickeau        }
511c3437056SNickeau
512c3437056SNickeau
513c3437056SNickeau        // If there is a redirection defined in the page rules
514c3437056SNickeau        $result = $this->processingPageRules();
515c3437056SNickeau        if ($result) {
516c3437056SNickeau            // A redirection has occurred
517c3437056SNickeau            // finish the process
518c3437056SNickeau            return;
519c3437056SNickeau        }
520c3437056SNickeau
521c3437056SNickeau        /**
522c3437056SNickeau         *
523c3437056SNickeau         * There was no redirection found, redirect to edit mode if writer
524c3437056SNickeau         *
525c3437056SNickeau         */
526c3437056SNickeau        if (Identity::isWriter() && $this->getConf(self::GO_TO_EDIT_MODE) == 1) {
527c3437056SNickeau
528c3437056SNickeau            $this->gotToEditMode($event);
529c3437056SNickeau            // Stop here
530c3437056SNickeau            return;
531c3437056SNickeau
532c3437056SNickeau        }
533c3437056SNickeau
53404fd306cSNickeau        /**
535c3437056SNickeau         *  We are still a reader, the redirection does not exist the user is not allowed to edit the page (public of other)
536c3437056SNickeau         */
537c3437056SNickeau        if ($this->getConf('ActionReaderFirst') == self::NOTHING) {
538c3437056SNickeau            return;
539c3437056SNickeau        }
540c3437056SNickeau
541c3437056SNickeau        // We are reader and their is no redirection set, we apply the algorithm
542c3437056SNickeau        $readerAlgorithms = array();
543c3437056SNickeau        $readerAlgorithms[0] = $this->getConf('ActionReaderFirst');
544c3437056SNickeau        $readerAlgorithms[1] = $this->getConf('ActionReaderSecond');
545c3437056SNickeau        $readerAlgorithms[2] = $this->getConf('ActionReaderThird');
546c3437056SNickeau
547c3437056SNickeau        while (
548c3437056SNickeau            ($algorithm = array_shift($readerAlgorithms)) != null
549c3437056SNickeau        ) {
550c3437056SNickeau
551c3437056SNickeau            switch ($algorithm) {
552c3437056SNickeau
553c3437056SNickeau                case self::NOTHING:
554c3437056SNickeau                    return;
555c3437056SNickeau
556c3437056SNickeau                case self::GO_TO_BEST_END_PAGE_NAME:
557c3437056SNickeau
55804fd306cSNickeau                    /**
55904fd306cSNickeau                     * @var MarkupPath $bestEndPage
56004fd306cSNickeau                     */
56104fd306cSNickeau                    list($bestEndPage, $method) = RouterBestEndPage::process($requestedMarkupPath);
56204fd306cSNickeau                    if ($bestEndPage != null) {
563c3437056SNickeau                        $res = false;
564c3437056SNickeau                        switch ($method) {
565c3437056SNickeau                            case self::REDIRECT_PERMANENT_METHOD:
56604fd306cSNickeau                                $res = $this->executePermanentRedirect($bestEndPage->getWikiId(), self::TARGET_ORIGIN_BEST_END_PAGE_NAME);
567c3437056SNickeau                                break;
568c3437056SNickeau                            case self::REDIRECT_NOTFOUND_METHOD:
56904fd306cSNickeau                                $res = $this->performNotFoundRedirect($bestEndPage->getWikiId(), self::TARGET_ORIGIN_BEST_END_PAGE_NAME);
570c3437056SNickeau                                break;
571c3437056SNickeau                            default:
572c3437056SNickeau                                LogUtility::msg("This redirection method ($method) was not expected for the redirection algorithm ($algorithm)");
573c3437056SNickeau                        }
574c3437056SNickeau                        if ($res) {
575c3437056SNickeau                            // Redirection has succeeded
576c3437056SNickeau                            return;
577c3437056SNickeau                        }
578c3437056SNickeau                    }
579c3437056SNickeau                    break;
580c3437056SNickeau
581c3437056SNickeau                case self::GO_TO_NS_START_PAGE:
582c3437056SNickeau
583c3437056SNickeau                    // Start page with the conf['start'] parameter
584c3437056SNickeau                    $startPage = getNS($identifier) . ':' . $conf['start'];
585c3437056SNickeau                    if (page_exists($startPage)) {
586c3437056SNickeau                        $res = $this->performNotFoundRedirect($startPage, self::TARGET_ORIGIN_START_PAGE);
587c3437056SNickeau                        if ($res) {
588c3437056SNickeau                            return;
589c3437056SNickeau                        }
590c3437056SNickeau                    }
591c3437056SNickeau
592c3437056SNickeau                    // Start page with the same name than the namespace
593c3437056SNickeau                    $startPage = getNS($identifier) . ':' . curNS($identifier);
594c3437056SNickeau                    if (page_exists($startPage)) {
595c3437056SNickeau                        $res = $this->performNotFoundRedirect($startPage, self::TARGET_ORIGIN_START_PAGE);
596c3437056SNickeau                        if ($res) {
597c3437056SNickeau                            return;
598c3437056SNickeau                        }
599c3437056SNickeau                    }
600c3437056SNickeau                    break;
601c3437056SNickeau
602c3437056SNickeau                case self::GO_TO_BEST_PAGE_NAME:
603c3437056SNickeau
604c3437056SNickeau                    $bestPageId = null;
605c3437056SNickeau
606c3437056SNickeau                    $bestPage = $this->getBestPage($identifier);
607c3437056SNickeau                    $bestPageId = $bestPage['id'];
608c3437056SNickeau                    $scorePageName = $bestPage['score'];
609c3437056SNickeau
610c3437056SNickeau                    // Get Score from a Namespace
611c3437056SNickeau                    $bestNamespace = $this->scoreBestNamespace($identifier);
612c3437056SNickeau                    $bestNamespaceId = $bestNamespace['namespace'];
613c3437056SNickeau                    $namespaceScore = $bestNamespace['score'];
614c3437056SNickeau
615c3437056SNickeau                    // Compare the two score
616c3437056SNickeau                    if ($scorePageName > 0 or $namespaceScore > 0) {
617c3437056SNickeau                        if ($scorePageName > $namespaceScore) {
618c3437056SNickeau                            $this->performNotFoundRedirect($bestPageId, self::TARGET_ORIGIN_BEST_PAGE_NAME);
619c3437056SNickeau                        } else {
620c3437056SNickeau                            $this->performNotFoundRedirect($bestNamespaceId, self::TARGET_ORIGIN_BEST_PAGE_NAME);
621c3437056SNickeau                        }
622c3437056SNickeau                        return;
623c3437056SNickeau                    }
624c3437056SNickeau                    break;
625c3437056SNickeau
626c3437056SNickeau                case self::GO_TO_BEST_NAMESPACE:
627c3437056SNickeau
628c3437056SNickeau                    $scoreNamespace = $this->scoreBestNamespace($identifier);
629c3437056SNickeau                    $bestNamespaceId = $scoreNamespace['namespace'];
630c3437056SNickeau                    $score = $scoreNamespace['score'];
631c3437056SNickeau
632c3437056SNickeau                    if ($score > 0) {
633c3437056SNickeau                        $this->performNotFoundRedirect($bestNamespaceId, self::TARGET_ORIGIN_BEST_NAMESPACE);
634c3437056SNickeau                        return;
635c3437056SNickeau                    }
636c3437056SNickeau                    break;
637c3437056SNickeau
638c3437056SNickeau                case self::GO_TO_SEARCH_ENGINE:
639c3437056SNickeau
640c3437056SNickeau                    $this->redirectToSearchEngine();
641c3437056SNickeau
642c3437056SNickeau                    return;
643c3437056SNickeau
644c3437056SNickeau                // End Switch Action
645c3437056SNickeau            }
646c3437056SNickeau
647c3437056SNickeau            // End While Action
648c3437056SNickeau        }
649c3437056SNickeau
650c3437056SNickeau
651c3437056SNickeau    }
652c3437056SNickeau
653c3437056SNickeau
654c3437056SNickeau    /**
655c3437056SNickeau     * getBestNamespace
656c3437056SNickeau     * Return a list with 'BestNamespaceId Score'
657c3437056SNickeau     * @param $id
658c3437056SNickeau     * @return array
659c3437056SNickeau     */
660c3437056SNickeau    private
661c3437056SNickeau    function scoreBestNamespace($id)
662c3437056SNickeau    {
663c3437056SNickeau
664c3437056SNickeau        global $conf;
665c3437056SNickeau
666c3437056SNickeau        // Parameters
667c3437056SNickeau        $pageNameSpace = getNS($id);
668c3437056SNickeau
669c3437056SNickeau        // If the page has an existing namespace start page take it, other search other namespace
670c3437056SNickeau        $startPageNameSpace = $pageNameSpace . ":";
671c3437056SNickeau        $dateAt = '';
672c3437056SNickeau        // $startPageNameSpace will get a full path (ie with start or the namespace
673c3437056SNickeau        resolve_pageid($pageNameSpace, $startPageNameSpace, $exists, $dateAt, true);
674c3437056SNickeau        if (page_exists($startPageNameSpace)) {
675c3437056SNickeau            $nameSpaces = array($startPageNameSpace);
676c3437056SNickeau        } else {
677c3437056SNickeau            $nameSpaces = ft_pageLookup($conf['start']);
678c3437056SNickeau        }
679c3437056SNickeau
680c3437056SNickeau        // Parameters and search the best namespace
681c3437056SNickeau        $pathNames = explode(':', $pageNameSpace);
682c3437056SNickeau        $bestNbWordFound = 0;
683c3437056SNickeau        $bestNamespaceId = '';
684c3437056SNickeau        foreach ($nameSpaces as $nameSpace) {
685c3437056SNickeau
686c3437056SNickeau            $nbWordFound = 0;
687c3437056SNickeau            foreach ($pathNames as $pathName) {
688c3437056SNickeau                if (strlen($pathName) > 2) {
689c3437056SNickeau                    $nbWordFound = $nbWordFound + substr_count($nameSpace, $pathName);
690c3437056SNickeau                }
691c3437056SNickeau            }
692c3437056SNickeau            if ($nbWordFound > $bestNbWordFound) {
693c3437056SNickeau                // Take only the smallest namespace
694c3437056SNickeau                if (strlen($nameSpace) < strlen($bestNamespaceId) or $nbWordFound > $bestNbWordFound) {
695c3437056SNickeau                    $bestNbWordFound = $nbWordFound;
696c3437056SNickeau                    $bestNamespaceId = $nameSpace;
697c3437056SNickeau                }
698c3437056SNickeau            }
699c3437056SNickeau        }
700c3437056SNickeau
701c3437056SNickeau        $startPageFactor = $this->getConf('WeightFactorForStartPage');
702c3437056SNickeau        $nameSpaceFactor = $this->getConf('WeightFactorForSameNamespace');
703c3437056SNickeau        if ($bestNbWordFound > 0) {
704c3437056SNickeau            $bestNamespaceScore = $bestNbWordFound * $nameSpaceFactor + $startPageFactor;
705c3437056SNickeau        } else {
706c3437056SNickeau            $bestNamespaceScore = 0;
707c3437056SNickeau        }
708c3437056SNickeau
709c3437056SNickeau
710c3437056SNickeau        return array(
711c3437056SNickeau            'namespace' => $bestNamespaceId,
712c3437056SNickeau            'score' => $bestNamespaceScore
713c3437056SNickeau        );
714c3437056SNickeau
715c3437056SNickeau    }
716c3437056SNickeau
717c3437056SNickeau    /**
718c3437056SNickeau     * @param $event
719c3437056SNickeau     */
720c3437056SNickeau    private
721c3437056SNickeau    function gotToEditMode(&$event)
722c3437056SNickeau    {
723c3437056SNickeau        global $ACT;
724c3437056SNickeau        $ACT = 'edit';
725c3437056SNickeau
726c3437056SNickeau    }
727c3437056SNickeau
728c3437056SNickeau
729c3437056SNickeau    /**
730c3437056SNickeau     * Redirect to an internal page ie:
731c3437056SNickeau     *   * on the same domain
732c3437056SNickeau     *   * no HTTP redirect
733c3437056SNickeau     *   * id rewrite
734c3437056SNickeau     * @param string $targetPageId - target page id
735c3437056SNickeau     * @param string $targetOriginId - the source of the target (redirect)
736c3437056SNickeau     * @return bool - return true if the user has the permission and that the redirect was done
737c3437056SNickeau     * @throws Exception
738c3437056SNickeau     */
739c3437056SNickeau    private
740c3437056SNickeau    function executeTransparentRedirect(string $targetPageId, string $targetOriginId): bool
741c3437056SNickeau    {
742c3437056SNickeau        /**
743c3437056SNickeau         * Because we set the ID globally for the ID redirect
74404fd306cSNickeau         * we make sure that this is not a {@link MarkupPath}
745c3437056SNickeau         * object otherwise we got an error in the {@link \ComboStrap\AnalyticsMenuItem}
746c3437056SNickeau         * because the constructor takes it {@link \dokuwiki\Menu\Item\AbstractItem}
747c3437056SNickeau         */
748c3437056SNickeau        if (is_object($targetPageId)) {
749c3437056SNickeau            $class = get_class($targetPageId);
750c3437056SNickeau            LogUtility::msg("The parameters targetPageId ($targetPageId) is an object of the class ($class) and it should be a page id");
751c3437056SNickeau        }
752c3437056SNickeau
753c3437056SNickeau        if (is_object($targetOriginId)) {
754c3437056SNickeau            $class = get_class($targetOriginId);
755c3437056SNickeau            LogUtility::msg("The parameters targetOriginId ($targetOriginId) is an object of the class ($class) and it should be a page id");
756c3437056SNickeau        }
757c3437056SNickeau
758c3437056SNickeau        // If the user does not have the right to see the target page
759c3437056SNickeau        // don't do anything
760c3437056SNickeau        if (!(Identity::isReader($targetPageId))) {
761c3437056SNickeau            return false;
762c3437056SNickeau        }
763c3437056SNickeau
764c3437056SNickeau        // Change the id
765c3437056SNickeau        global $ID;
766c3437056SNickeau        global $INFO;
767c3437056SNickeau        $sourceId = $ID;
768c3437056SNickeau        $ID = $targetPageId;
76904fd306cSNickeau        if (isset($_REQUEST["id"])) {
77004fd306cSNickeau            $_REQUEST["id"] = $targetPageId;
77104fd306cSNickeau        }
77204fd306cSNickeau        if (isset($_GET["id"])) {
77304fd306cSNickeau            $_GET["id"] = $targetPageId;
77404fd306cSNickeau        }
7754cadd4f8SNickeau
776c3437056SNickeau        /**
7774cadd4f8SNickeau         * Refresh the $INFO data
7784cadd4f8SNickeau         *
7794cadd4f8SNickeau         * the info attributes are used elsewhere
7804cadd4f8SNickeau         *   'id': for the sidebar
7814cadd4f8SNickeau         *   'exist' : for the meta robot = noindex,follow, see {@link tpl_metaheaders()}
7824cadd4f8SNickeau         *   'rev' : for the edit button to be sure that the page is still the same
783c3437056SNickeau         */
7844cadd4f8SNickeau        $INFO = pageinfo();
785c3437056SNickeau
786c3437056SNickeau        /**
787c3437056SNickeau         * Not compatible with
788c3437056SNickeau         * https://www.dokuwiki.org/config:send404 is enabled
789c3437056SNickeau         *
790c3437056SNickeau         * This check happens before that dokuwiki is started
791c3437056SNickeau         * and send an header in doku.php
792c3437056SNickeau         *
793c3437056SNickeau         * We send a warning
794c3437056SNickeau         */
795c3437056SNickeau        global $conf;
796c3437056SNickeau        if ($conf['send404'] == true) {
797c3437056SNickeau            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);
798c3437056SNickeau        }
799c3437056SNickeau
800c3437056SNickeau        // Redirection
801c3437056SNickeau        $this->logRedirection($sourceId, $targetPageId, $targetOriginId, self::REDIRECT_TRANSPARENT_METHOD);
802c3437056SNickeau
803c3437056SNickeau        return true;
804c3437056SNickeau
805c3437056SNickeau    }
806c3437056SNickeau
80704fd306cSNickeau    private function executePermanentRedirect(string $targetIdOrUrl, $targetOrigin): bool
808c3437056SNickeau    {
80904fd306cSNickeau        return $this->executeHttpRedirect($targetIdOrUrl, $targetOrigin, self::REDIRECT_PERMANENT_METHOD);
810c3437056SNickeau    }
811c3437056SNickeau
812c3437056SNickeau    /**
813c3437056SNickeau     * The general HTTP Redirect method to an internal page
814c3437056SNickeau     * where the redirection method decide which type of redirection
81504fd306cSNickeau     * @param string $targetIdOrUrl - a dokuwiki id or an url
816c3437056SNickeau     * @param string $targetOrigin - the origin of the target (the algorithm used to get the target origin)
817c3437056SNickeau     * @param string $method - the redirection method
818c3437056SNickeau     */
819c3437056SNickeau    private
82004fd306cSNickeau    function executeHttpRedirect(string $targetIdOrUrl, string $targetOrigin, string $method): bool
821c3437056SNickeau    {
822c3437056SNickeau
823c3437056SNickeau        global $ID;
824c3437056SNickeau
825c3437056SNickeau
826c3437056SNickeau        // Log the redirections
82704fd306cSNickeau        $this->logRedirection($ID, $targetIdOrUrl, $targetOrigin, $method);
828c3437056SNickeau
829c3437056SNickeau
83004fd306cSNickeau        // An http external url ?
83104fd306cSNickeau        try {
83204fd306cSNickeau            $isValid = Url::createFromString($targetIdOrUrl)->isHttpUrl();
83304fd306cSNickeau        } catch (ExceptionBadSyntax|ExceptionBadArgument $e) {
83404fd306cSNickeau            $isValid = false;
83504fd306cSNickeau        }
83604fd306cSNickeau
83782a60d03SNickeau        // If there is a bug in the isValid function for an internal url
83882a60d03SNickeau        // We get a loop.
83982a60d03SNickeau        // The Url becomes the id, the id is unknown and we do a redirect again
84082a60d03SNickeau        //
84182a60d03SNickeau        // We check then if the target starts with the base url
84282a60d03SNickeau        // if this is the case, it's valid
84304fd306cSNickeau        if (!$isValid && strpos($targetIdOrUrl, DOKU_URL) === 0) {
84482a60d03SNickeau            $isValid = true;
84582a60d03SNickeau        }
84682a60d03SNickeau        if ($isValid) {
847c3437056SNickeau
848c3437056SNickeau            // defend against HTTP Response Splitting
849c3437056SNickeau            // https://owasp.org/www-community/attacks/HTTP_Response_Splitting
85004fd306cSNickeau            $targetUrl = stripctl($targetIdOrUrl);
851c3437056SNickeau
852c3437056SNickeau        } else {
853c3437056SNickeau
854c3437056SNickeau
855c3437056SNickeau            // Explode the page ID and the anchor (#)
85604fd306cSNickeau            $link = explode('#', $targetIdOrUrl, 2);
857c3437056SNickeau
858c3437056SNickeau            // Query String to pass the message
859c3437056SNickeau            $urlParams = [];
860c3437056SNickeau            if ($targetOrigin != self::TARGET_ORIGIN_PERMALINK) {
861c3437056SNickeau                $urlParams = array(
862c3437056SNickeau                    action_plugin_combo_routermessage::ORIGIN_PAGE => $ID,
863c3437056SNickeau                    action_plugin_combo_routermessage::ORIGIN_TYPE => $targetOrigin
864c3437056SNickeau                );
865c3437056SNickeau            }
866c3437056SNickeau
867c3437056SNickeau            // if this is search engine redirect
868c3437056SNickeau            if ($targetOrigin == self::TARGET_ORIGIN_SEARCH_ENGINE) {
869c3437056SNickeau                $replacementPart = array(':', '_', '-');
870c3437056SNickeau                $query = str_replace($replacementPart, ' ', $ID);
871c3437056SNickeau                $urlParams["do"] = "search";
872c3437056SNickeau                $urlParams["q"] = $query;
873c3437056SNickeau            }
874c3437056SNickeau
875c3437056SNickeau            $targetUrl = wl($link[0], $urlParams, true, '&');
876c3437056SNickeau            // %3A back to :
877c3437056SNickeau            $targetUrl = str_replace("%3A", ":", $targetUrl);
878*70bbd7f1Sgerardnico            if (array_key_exists(1, $link)) {
879c3437056SNickeau                $targetUrl .= '#' . rawurlencode($link[1]);
880c3437056SNickeau            }
881c3437056SNickeau
882c3437056SNickeau        }
883c3437056SNickeau
884c3437056SNickeau        /**
885c3437056SNickeau         * The dokuwiki function {@link send_redirect()}
886c3437056SNickeau         * set the `Location header` and in php, the header function
887c3437056SNickeau         * in this case change the status code to 302 Arghhhh.
888c3437056SNickeau         * The code below is adapted from this function {@link send_redirect()}
889c3437056SNickeau         */
890c3437056SNickeau        global $MSG; // are there any undisplayed messages? keep them in session for display
891c3437056SNickeau        if (isset($MSG) && count($MSG) && !defined('NOSESSION')) {
892c3437056SNickeau            //reopen session, store data and close session again
893c3437056SNickeau            @session_start();
894c3437056SNickeau            $_SESSION[DOKU_COOKIE]['msg'] = $MSG;
895c3437056SNickeau        }
896c3437056SNickeau        session_write_close(); // always close the session
897c3437056SNickeau
898c3437056SNickeau        switch ($method) {
899c3437056SNickeau            case self::REDIRECT_PERMANENT_METHOD:
90004fd306cSNickeau                ExecutionContext::getActualOrCreateFromEnv()
90104fd306cSNickeau                    ->response()
90204fd306cSNickeau                    ->setStatus(HttpResponseStatus::PERMANENT_REDIRECT)
903c3437056SNickeau                    ->addHeader(self::LOCATION_HEADER_PREFIX . $targetUrl)
90404fd306cSNickeau                    ->end();
905c3437056SNickeau                return true;
906c3437056SNickeau            case self::REDIRECT_NOTFOUND_METHOD:
907c3437056SNickeau
908c3437056SNickeau                // Empty 404 body to not get the standard 404 page of the browser
909c3437056SNickeau                // but a blank page to avoid a sort of FOUC.
910c3437056SNickeau                // ie the user see a page briefly
91104fd306cSNickeau                ExecutionContext::getActualOrCreateFromEnv()
91204fd306cSNickeau                    ->response()
91304fd306cSNickeau                    ->setStatus(HttpResponseStatus::NOT_FOUND)
914c3437056SNickeau                    ->addHeader(self::REFRESH_HEADER_PREFIX . $targetUrl)
91504fd306cSNickeau                    ->setBody(self::PAGE_404, Mime::getHtml())
91604fd306cSNickeau                    ->end();
917c3437056SNickeau                return true;
918c3437056SNickeau
919c3437056SNickeau            default:
920c3437056SNickeau                LogUtility::msg("The method ($method) is not an http redirection");
921c3437056SNickeau                return false;
922c3437056SNickeau        }
923c3437056SNickeau
924c3437056SNickeau
925c3437056SNickeau    }
926c3437056SNickeau
927c3437056SNickeau    /**
928c3437056SNickeau     * @param $id
929c3437056SNickeau     * @return array
930c3437056SNickeau     */
931c3437056SNickeau    private
932c3437056SNickeau    function getBestPage($id): array
933c3437056SNickeau    {
934c3437056SNickeau
935c3437056SNickeau        // The return parameters
936c3437056SNickeau        $bestPageId = null;
937c3437056SNickeau        $scorePageName = null;
938c3437056SNickeau
939c3437056SNickeau        // Get Score from a page
940c3437056SNickeau        $pageName = noNS($id);
941c3437056SNickeau        $pagesWithSameName = ft_pageLookup($pageName);
942c3437056SNickeau        if (count($pagesWithSameName) > 0) {
943c3437056SNickeau
944c3437056SNickeau            // Search same namespace in the page found than in the Id page asked.
945c3437056SNickeau            $bestNbWordFound = 0;
946c3437056SNickeau
947c3437056SNickeau
948c3437056SNickeau            $wordsInPageSourceId = explode(':', $id);
949c3437056SNickeau            foreach ($pagesWithSameName as $targetPageId => $title) {
950c3437056SNickeau
951c3437056SNickeau                // Nb of word found in the target page id
952c3437056SNickeau                // that are in the source page id
953c3437056SNickeau                $nbWordFound = 0;
954c3437056SNickeau                foreach ($wordsInPageSourceId as $word) {
955c3437056SNickeau                    $nbWordFound = $nbWordFound + substr_count($targetPageId, $word);
956c3437056SNickeau                }
957c3437056SNickeau
958c3437056SNickeau                if ($bestPageId == null) {
959c3437056SNickeau
960c3437056SNickeau                    $bestNbWordFound = $nbWordFound;
961c3437056SNickeau                    $bestPageId = $targetPageId;
962c3437056SNickeau
963c3437056SNickeau                } else {
964c3437056SNickeau
965c3437056SNickeau                    if ($nbWordFound >= $bestNbWordFound && strlen($bestPageId) > strlen($targetPageId)) {
966c3437056SNickeau
967c3437056SNickeau                        $bestNbWordFound = $nbWordFound;
968c3437056SNickeau                        $bestPageId = $targetPageId;
969c3437056SNickeau
970c3437056SNickeau                    }
971c3437056SNickeau
972c3437056SNickeau                }
973c3437056SNickeau
974c3437056SNickeau            }
975c3437056SNickeau            $scorePageName = $this->getConf('WeightFactorForSamePageName') + ($bestNbWordFound - 1) * $this->getConf('WeightFactorForSameNamespace');
976c3437056SNickeau            return array(
977c3437056SNickeau                'id' => $bestPageId,
978c3437056SNickeau                'score' => $scorePageName);
979c3437056SNickeau        }
980c3437056SNickeau        return array(
981c3437056SNickeau            'id' => $bestPageId,
982c3437056SNickeau            'score' => $scorePageName
983c3437056SNickeau        );
984c3437056SNickeau
985c3437056SNickeau    }
986c3437056SNickeau
987c3437056SNickeau
988c3437056SNickeau    /**
989c3437056SNickeau     * Redirect to the search engine
990c3437056SNickeau     */
991c3437056SNickeau    private
992c3437056SNickeau    function redirectToSearchEngine()
993c3437056SNickeau    {
994c3437056SNickeau
995c3437056SNickeau        global $ID;
996c3437056SNickeau        $this->performNotFoundRedirect($ID, self::TARGET_ORIGIN_SEARCH_ENGINE);
997c3437056SNickeau
998c3437056SNickeau    }
999c3437056SNickeau
1000c3437056SNickeau
1001c3437056SNickeau    /**
1002c3437056SNickeau     *
1003c3437056SNickeau     *   * For a conf file, it will update the Redirection Action Data as Referrer, Count Of Redirection, Redirection Date
1004c3437056SNickeau     *   * For a SQlite database, it will add a row into the log
1005c3437056SNickeau     *
1006c3437056SNickeau     * @param string $sourcePageId
1007c3437056SNickeau     * @param $targetPageId
1008c3437056SNickeau     * @param $algorithmic
1009c3437056SNickeau     * @param $method - http or rewrite
1010c3437056SNickeau     */
1011c3437056SNickeau    function logRedirection(string $sourcePageId, $targetPageId, $algorithmic, $method)
1012c3437056SNickeau    {
1013c3437056SNickeau
1014c3437056SNickeau        $row = array(
1015c3437056SNickeau            "TIMESTAMP" => date("c"),
1016c3437056SNickeau            "SOURCE" => $sourcePageId,
1017c3437056SNickeau            "TARGET" => $targetPageId,
1018*70bbd7f1Sgerardnico            "REFERRER" => $_SERVER['HTTP_REFERER'] ?? null,
1019c3437056SNickeau            "TYPE" => $algorithmic,
1020c3437056SNickeau            "METHOD" => $method
1021c3437056SNickeau        );
1022c3437056SNickeau        $request = Sqlite::createOrGetBackendSqlite()
1023c3437056SNickeau            ->createRequest()
1024c3437056SNickeau            ->setTableRow('redirections_log', $row);
1025c3437056SNickeau        try {
1026c3437056SNickeau            $request
1027c3437056SNickeau                ->execute();
102804fd306cSNickeau        } catch (ExceptionCompile $e) {
1029c3437056SNickeau            LogUtility::msg("Redirection Log Insert Error. {$e->getMessage()}");
1030c3437056SNickeau        } finally {
1031c3437056SNickeau            $request->close();
1032c3437056SNickeau        }
1033c3437056SNickeau
1034c3437056SNickeau
1035c3437056SNickeau    }
1036c3437056SNickeau
1037c3437056SNickeau    /**
1038c3437056SNickeau     * This function check if there is a redirection declared
1039c3437056SNickeau     * in the redirection table
1040c3437056SNickeau     * @return bool - true if a rewrite or redirection occurs
1041c3437056SNickeau     * @throws Exception
1042c3437056SNickeau     */
1043c3437056SNickeau    private function processingPageRules(): bool
1044c3437056SNickeau    {
1045c3437056SNickeau        global $ID;
1046c3437056SNickeau
1047c3437056SNickeau        $calculatedTarget = null;
1048c3437056SNickeau        $ruleMatcher = null; // Used in a warning message if the target page does not exist
1049c3437056SNickeau        // Known redirection in the table
1050c3437056SNickeau        // Get the page from redirection data
1051c3437056SNickeau        $rules = $this->pageRules->getRules();
1052c3437056SNickeau        foreach ($rules as $rule) {
1053c3437056SNickeau
1054c3437056SNickeau            $ruleMatcher = strtolower($rule[PageRules::MATCHER_NAME]);
1055c3437056SNickeau            $ruleTarget = $rule[PageRules::TARGET_NAME];
1056c3437056SNickeau
1057c3437056SNickeau            // Glob to Rexgexp
105804fd306cSNickeau            $regexpPattern = '/' . str_replace("*", "(.*)", $ruleMatcher) . '/i';
1059c3437056SNickeau
1060c3437056SNickeau            // Match ?
1061c3437056SNickeau            // https://www.php.net/manual/en/function.preg-match.php
106286867397Sgerardnico            $pregMatchResult = @preg_match($regexpPattern, $ID, $matches);
106386867397Sgerardnico            if ($pregMatchResult === false) {
106486867397Sgerardnico                // The `if` to take into account this problem
106586867397Sgerardnico                // PHP Warning:  preg_match(): Unknown modifier 'd' in /opt/www/datacadamia.com/lib/plugins/combo/action/router.php on line 972
106686867397Sgerardnico                LogUtility::log2file("processing Page Rules An error occurred with the pattern ($regexpPattern)", LogUtility::LVL_MSG_WARNING);
106786867397Sgerardnico                return false;
106886867397Sgerardnico            }
106986867397Sgerardnico            if ($pregMatchResult) {
1070c3437056SNickeau                $calculatedTarget = $ruleTarget;
1071c3437056SNickeau                foreach ($matches as $key => $match) {
1072c3437056SNickeau                    if ($key == 0) {
1073c3437056SNickeau                        continue;
1074c3437056SNickeau                    } else {
1075c3437056SNickeau                        $calculatedTarget = str_replace('$' . $key, $match, $calculatedTarget);
1076c3437056SNickeau                    }
1077c3437056SNickeau                }
1078c3437056SNickeau                break;
1079c3437056SNickeau            }
1080c3437056SNickeau        }
1081c3437056SNickeau
1082c3437056SNickeau        if ($calculatedTarget == null) {
1083c3437056SNickeau            return false;
1084c3437056SNickeau        }
1085c3437056SNickeau
1086c3437056SNickeau        // If this is an external redirect (other domain)
108704fd306cSNickeau        try {
108804fd306cSNickeau            $isHttpUrl = Url::createFromString($calculatedTarget)->isHttpUrl();
108904fd306cSNickeau        } catch (ExceptionBadSyntax $e) {
109004fd306cSNickeau            $isHttpUrl = false;
109104fd306cSNickeau        }
109204fd306cSNickeau        if ($isHttpUrl) {
1093c3437056SNickeau            $this->executeHttpRedirect($calculatedTarget, self::TARGET_ORIGIN_PAGE_RULES, self::REDIRECT_PERMANENT_METHOD);
1094c3437056SNickeau            return true;
1095c3437056SNickeau        }
1096c3437056SNickeau
1097c3437056SNickeau        // If the page exist
1098c3437056SNickeau        if (page_exists($calculatedTarget)) {
1099c3437056SNickeau
1100c3437056SNickeau            // This is DokuWiki Id and should always be lowercase
1101c3437056SNickeau            // The page rule may have change that
1102c3437056SNickeau            $calculatedTarget = strtolower($calculatedTarget);
1103d0abe7fcSgerardnico            $res = $this->executeHttpRedirect($calculatedTarget, self::TARGET_ORIGIN_PAGE_RULES, self::REDIRECT_PERMANENT_METHOD);
1104c3437056SNickeau            if ($res) {
1105c3437056SNickeau                return true;
1106c3437056SNickeau            } else {
1107c3437056SNickeau                return false;
1108c3437056SNickeau            }
1109c3437056SNickeau
1110c3437056SNickeau        } else {
1111c3437056SNickeau
1112c3437056SNickeau            LogUtility::msg("The calculated target page ($calculatedTarget) (for the non-existing page `$ID` with the matcher `$ruleMatcher`) does not exist", LogUtility::LVL_MSG_ERROR);
1113c3437056SNickeau            return false;
1114c3437056SNickeau
1115c3437056SNickeau        }
1116c3437056SNickeau
1117c3437056SNickeau    }
1118c3437056SNickeau
1119c3437056SNickeau    private function performNotFoundRedirect(string $targetId, string $origin): bool
1120c3437056SNickeau    {
1121c3437056SNickeau        return $this->executeHttpRedirect($targetId, $origin, self::REDIRECT_NOTFOUND_METHOD);
1122c3437056SNickeau    }
1123c3437056SNickeau
1124c3437056SNickeau
1125c3437056SNickeau}
1126