1/*
2 * Copyright (c) 2012,2014 Apple Inc. All Rights Reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24
25#include <utilities/SecCFWrappers.h>
26
27//
28// Global sigleton Zulu time.
29//
30CFGiblisGetSingleton(CFCalendarRef, SecCFCalendarGetZulu, zuluCalendar, ^{
31    *zuluCalendar = CFCalendarCreateWithIdentifier(kCFAllocatorDefault, kCFGregorianCalendar);
32    CFTimeZoneRef tz = CFTimeZoneCreateWithTimeIntervalFromGMT(kCFAllocatorDefault, 0.0);
33    CFCalendarSetTimeZone(*zuluCalendar, tz);
34    CFReleaseSafe(tz);
35})
36
37
38
39void CFStringPerformWithCStringAndLength(CFStringRef inStr, void(^operation)(const char *utf8String, size_t utf8Length)) {
40    const char *cstr = CFStringGetCStringPtr(inStr, kCFStringEncodingUTF8);
41    if (cstr) {
42        operation(cstr, strlen(cstr));
43    } else {
44        CFIndex neededLen = 0;
45        CFRange range = { 0, CFStringGetLength(inStr) };
46        CFStringGetBytes(inStr, range, kCFStringEncodingUTF8,
47                         0, FALSE, NULL, 0, &neededLen);
48        CFIndex usedLen = 0;
49        if (neededLen < 4096) {
50            char buf[neededLen + 1];
51            CFStringGetBytes(inStr, range, kCFStringEncodingUTF8,
52                             0, FALSE, (UInt8 *)buf, neededLen, &usedLen);
53            assert(usedLen == neededLen);
54            buf[usedLen] = 0;
55            operation(buf, (size_t)usedLen);
56            //cc_zero(neededLen, buf);
57        } else {
58            char *buf = malloc(neededLen + 1);
59            CFStringGetBytes(inStr, range, kCFStringEncodingUTF8,
60                             0, FALSE, (UInt8 *)buf, neededLen, &usedLen);
61            assert(usedLen == neededLen);
62            buf[usedLen] = 0;
63            operation(buf, (size_t)usedLen);
64            //cc_zero(neededLen, buf);
65            free(buf);
66        }
67    }
68}
69
70void CFStringPerformWithCString(CFStringRef inStr, void(^operation)(const char *utf8String)) {
71    const char *cstr = CFStringGetCStringPtr(inStr, kCFStringEncodingUTF8);
72    if (cstr) {
73        operation(cstr);
74    } else {
75        CFIndex neededLen = 0;
76        CFRange range = { 0, CFStringGetLength(inStr) };
77        CFStringGetBytes(inStr, range, kCFStringEncodingUTF8,
78                         0, FALSE, NULL, 0, &neededLen);
79        CFIndex usedLen = 0;
80        if (neededLen < 4096) {
81            char buf[neededLen + 1];
82            CFStringGetBytes(inStr, range, kCFStringEncodingUTF8,
83                             0, FALSE, (UInt8 *)buf, neededLen, &usedLen);
84            assert(usedLen == neededLen);
85            buf[usedLen] = 0;
86            operation(buf);
87            //cc_zero(neededLen, buf);
88        } else {
89            char *buf = malloc(neededLen + 1);
90            CFStringGetBytes(inStr, range, kCFStringEncodingUTF8,
91                             0, FALSE, (UInt8 *)buf, neededLen, &usedLen);
92            assert(usedLen == neededLen);
93            buf[usedLen] = 0;
94            operation(buf);
95            //cc_zero(neededLen, buf);
96            free(buf);
97        }
98    }
99}
100