Bug 1579285: create work around for openssl_x509_fingerprint

behatnotneeded

Change-Id: I50d6371766a244525e587c43fd1b72b1baf057ba

.gitignore

@@ -35,3 +35,4 @@ mahara-*.zip
 logfile
 node_modules/
 htdocs/.externalToolBuilders/
+htdocs/auth/saml/extlib/simplesamlphp

htdocs/auth/saml/lib.php

@@ -421,11 +421,11 @@ class PluginAuthSaml extends PluginAuth {
                                                 ),
                                                 'sha1fingerprint' => array(
                                                     'type'         => 'html',
-                                                    'value'        => '<div><p>' . get_string('sha1fingerprint', 'auth.webservice', openssl_x509_fingerprint($cert, "sha1")) . '</p></div>',
+                                                    'value'        => '<div><p>' . get_string('sha1fingerprint', 'auth.webservice', auth_saml_openssl_x509_fingerprint($cert, "sha1")) . '</p></div>',
                                                 ),
                                                 'md5fingerprint' => array(
                                                     'type'         => 'html',
-                                                    'value'        => '<div><p>' . get_string('md5fingerprint', 'auth.webservice', openssl_x509_fingerprint($cert, "md5")) . '</p></div>',
+                                                    'value'        => '<div><p>' . get_string('md5fingerprint', 'auth.webservice', auth_saml_openssl_x509_fingerprint($cert, "md5")) . '</p></div>',
                                                 ),
                                                 'expires' => array(
                                                     'type'         => 'html',
@@ -828,6 +828,15 @@ class PluginAuthSaml extends PluginAuth {
     }
 }
 
+/**
+ * Work around for missing function in 5.5 - is in 5.6
+ */
+function auth_saml_openssl_x509_fingerprint($cert, $hash) {
+   $cert = preg_replace('#-.*-|\r|\n#', '', $cert);
+   $bin = base64_decode($cert);
+   return hash($hash, $bin);
+}
+
 if (file_exists(get_config('docroot') . 'auth/saml/extlib/simplesamlphp/lib/SimpleSAML/XHTML/IdPDisco.php')) {
     require_once(get_config('docroot') . 'auth/saml/extlib/simplesamlphp/lib/SimpleSAML/XHTML/IdPDisco.php');