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authoremkael <emkael@tlen.pl>2018-04-26 01:00:12 +0200
committeremkael <emkael@tlen.pl>2018-04-26 01:00:12 +0200
commit4b8a9a5189a625bf99fedec7fd31f6e146410a14 (patch)
treea29759d5f0f0c29f07c89c59f6b5cf38407d1470 /lib/facebook-graph-sdk/src/Facebook/polyfills.php
parentab82beef33f4c196383a81213dcdff4ebe9447ae (diff)
Update FB API library
Diffstat (limited to 'lib/facebook-graph-sdk/src/Facebook/polyfills.php')
-rw-r--r--lib/facebook-graph-sdk/src/Facebook/polyfills.php49
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/facebook-graph-sdk/src/Facebook/polyfills.php b/lib/facebook-graph-sdk/src/Facebook/polyfills.php
new file mode 100644
index 0000000..4a67d86
--- /dev/null
+++ b/lib/facebook-graph-sdk/src/Facebook/polyfills.php
@@ -0,0 +1,49 @@
+<?php
+/**
+ * Copyright 2017 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/**
+ * @see https://github.com/sarciszewski/php-future/blob/master/src/Security.php#L37-L51
+ */
+if (!function_exists('hash_equals')) {
+ function hash_equals($knownString, $userString)
+ {
+ if (function_exists('mb_strlen')) {
+ $kLen = mb_strlen($knownString, '8bit');
+ $uLen = mb_strlen($userString, '8bit');
+ } else {
+ $kLen = strlen($knownString);
+ $uLen = strlen($userString);
+ }
+ if ($kLen !== $uLen) {
+ return false;
+ }
+ $result = 0;
+ for ($i = 0; $i < $kLen; $i++) {
+ $result |= (ord($knownString[$i]) ^ ord($userString[$i]));
+ }
+
+ // They are only identical strings if $result is exactly 0...
+ return 0 === $result;
+ }
+}