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-rw-r--r--application/front/controllers/ShaarliController.php43
1 files changed, 43 insertions, 0 deletions
diff --git a/application/front/controllers/ShaarliController.php b/application/front/controllers/ShaarliController.php
index 0c5d363e..bfff5fcf 100644
--- a/application/front/controllers/ShaarliController.php
+++ b/application/front/controllers/ShaarliController.php
@@ -6,6 +6,7 @@ namespace Shaarli\Front\Controller;
6 6
7use Shaarli\Bookmark\BookmarkFilter; 7use Shaarli\Bookmark\BookmarkFilter;
8use Shaarli\Container\ShaarliContainer; 8use Shaarli\Container\ShaarliContainer;
9use Slim\Http\Response;
9 10
10abstract class ShaarliController 11abstract class ShaarliController
11{ 12{
@@ -80,4 +81,46 @@ abstract class ShaarliController
80 $this->assignView('plugins_' . $name, $plugin_data); 81 $this->assignView('plugins_' . $name, $plugin_data);
81 } 82 }
82 } 83 }
84
85 /**
86 * Generates a redirection to the previous page, based on the HTTP_REFERER.
87 * It fails back to the home page.
88 *
89 * @param array $loopTerms Terms to remove from path and query string to prevent direction loop.
90 * @param array $clearParams List of parameter to remove from the query string of the referrer.
91 */
92 protected function redirectFromReferer(Response $response, array $loopTerms = [], array $clearParams = []): Response
93 {
94 $defaultPath = './';
95 $referer = $this->container->environment['HTTP_REFERER'] ?? null;
96
97 if (null !== $referer) {
98 $currentUrl = parse_url($referer);
99 parse_str($currentUrl['query'] ?? '', $params);
100 $path = $currentUrl['path'] ?? $defaultPath;
101 } else {
102 $params = [];
103 $path = $defaultPath;
104 }
105
106 // Prevent redirection loop
107 if (isset($currentUrl)) {
108 foreach ($clearParams as $value) {
109 unset($params[$value]);
110 }
111
112 $checkQuery = implode('', array_keys($params));
113 foreach ($loopTerms as $value) {
114 if (strpos($path . $checkQuery, $value) !== false) {
115 $params = [];
116 $path = $defaultPath;
117 break;
118 }
119 }
120 }
121
122 $queryString = count($params) > 0 ? '?'. http_build_query($params) : '';
123
124 return $response->withRedirect($path . $queryString);
125 }
83} 126}