X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/c38e3ce98599a410a47dc10253faa4d5830f13b2..427c49bcad63d042b29ada2ac27e3dfc4845c779:/utilities/src/SecCFWrappers.c

diff --git a/utilities/src/SecCFWrappers.c b/utilities/src/SecCFWrappers.c
new file mode 100644
index 00000000..d16ed676
--- /dev/null
+++ b/utilities/src/SecCFWrappers.c
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+//
+//  SecCFWrappers.c
+//  utilities
+//
+//  Created by Michael Brouwer on 11/15/12.
+//  Copyright 2012 Apple Inc. All rights reserved.
+//
+
+#include <utilities/SecCFWrappers.h>
+
+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);
+        }
+    }
+}