Fix sha256.

tsugiproject · Jan 17, 2024 · 4e2bd8a · 4e2bd8a
1 parent 43302c4
commit 4e2bd8a
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/src/Util/U.php b/src/Util/U.php
@@ -62,7 +62,8 @@ public static function safe_href($string) {
 
     // Convienence method to wrap sha256
     public static function lti_sha256($val) {
-        return hash('sha256', $val);
+        if ( is_string($val) ) return hash('sha256', $val);
+        return null;
     }
 
     // Convienence method to get the local path if we are doing

diff --git a/tests/Util/UTest.php b/tests/Util/UTest.php
@@ -299,4 +299,11 @@ public function testServerPrefix() {
         $this->assertEquals($CFG->serverPrefix(), "227b19f82bca5eb23f9cd02cfe34dbbe");
     }
 
+    public function testSha256() {
+        $out = lti_sha256("hello world");
+        $this->assertEquals($out, "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9");
+        $out = lti_sha256(null);
+        $this->assertEquals($out, null);
+    }
+
 }