Security-57031.1.35.tar.gz

[apple/security.git] / Security / utilities / src / SecCFWrappers.c

diff --git a/Security/utilities/src/SecCFWrappers.c b/Security/utilities/src/SecCFWrappers.c
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+++ b/Security/utilities/src/SecCFWrappers.c
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+/*
+ * Copyright (c) 2012,2014 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+
+#include <utilities/SecCFWrappers.h>
+
+//
+// Global sigleton Zulu time.
+//
+CFGiblisGetSingleton(CFCalendarRef, SecCFCalendarGetZulu, zuluCalendar, ^{
+    *zuluCalendar = CFCalendarCreateWithIdentifier(kCFAllocatorDefault, kCFGregorianCalendar);
+    CFTimeZoneRef tz = CFTimeZoneCreateWithTimeIntervalFromGMT(kCFAllocatorDefault, 0.0);
+    CFCalendarSetTimeZone(*zuluCalendar, tz);
+    CFReleaseSafe(tz);
+})
+
+
+
+void CFStringPerformWithCStringAndLength(CFStringRef inStr, void(^operation)(const char *utf8String, size_t utf8Length)) {
+    const char *cstr = CFStringGetCStringPtr(inStr, kCFStringEncodingUTF8);
+    if (cstr) {
+        operation(cstr, strlen(cstr));
+    } else {
+        CFIndex neededLen = 0;
+        CFRange range = { 0, CFStringGetLength(inStr) };
+        CFStringGetBytes(inStr, range, kCFStringEncodingUTF8,
+                         0, FALSE, NULL, 0, &neededLen);
+        CFIndex usedLen = 0;
+        if (neededLen < 4096) {
+            char buf[neededLen + 1];
+            CFStringGetBytes(inStr, range, kCFStringEncodingUTF8,
+                             0, FALSE, (UInt8 *)buf, neededLen, &usedLen);
+            assert(usedLen == neededLen);
+            buf[usedLen] = 0;
+            operation(buf, (size_t)usedLen);
+            //cc_zero(neededLen, buf);
+        } else {
+            char *buf = malloc(neededLen + 1);
+            CFStringGetBytes(inStr, range, kCFStringEncodingUTF8,
+                             0, FALSE, (UInt8 *)buf, neededLen, &usedLen);
+            assert(usedLen == neededLen);
+            buf[usedLen] = 0;
+            operation(buf, (size_t)usedLen);
+            //cc_zero(neededLen, buf);
+            free(buf);
+        }
+    }
+}
+
+void CFStringPerformWithCString(CFStringRef inStr, void(^operation)(const char *utf8String)) {
+    const char *cstr = CFStringGetCStringPtr(inStr, kCFStringEncodingUTF8);
+    if (cstr) {
+        operation(cstr);
+    } else {
+        CFIndex neededLen = 0;
+        CFRange range = { 0, CFStringGetLength(inStr) };
+        CFStringGetBytes(inStr, range, kCFStringEncodingUTF8,
+                         0, FALSE, NULL, 0, &neededLen);
+        CFIndex usedLen = 0;
+        if (neededLen < 4096) {
+            char buf[neededLen + 1];
+            CFStringGetBytes(inStr, range, kCFStringEncodingUTF8,
+                             0, FALSE, (UInt8 *)buf, neededLen, &usedLen);
+            assert(usedLen == neededLen);
+            buf[usedLen] = 0;
+            operation(buf);
+            //cc_zero(neededLen, buf);
+        } else {
+            char *buf = malloc(neededLen + 1);
+            CFStringGetBytes(inStr, range, kCFStringEncodingUTF8,
+                             0, FALSE, (UInt8 *)buf, neededLen, &usedLen);
+            assert(usedLen == neededLen);
+            buf[usedLen] = 0;
+            operation(buf);
+            //cc_zero(neededLen, buf);
+            free(buf);
+        }
+    }
+}