X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/Security/utilities/src/SecCFError.c

diff --git a/Security/utilities/src/SecCFError.c b/Security/utilities/src/SecCFError.c
new file mode 100644
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+++ b/Security/utilities/src/SecCFError.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/SecCFError.h>
+#include <utilities/SecCFRelease.h>
+#include <utilities/debugging.h>
+
+bool SecKernError(kern_return_t result, CFErrorRef *error, CFStringRef format, ...) {
+    if (!result) return true;
+    if (error) {
+        va_list args;
+        CFIndex code = result;
+        CFErrorRef previousError = *error;
+
+        *error = NULL;
+        va_start(args, format);
+        SecCFCreateErrorWithFormatAndArguments(code, kSecKernDomain, previousError, error, NULL, format, args);
+        va_end(args);
+    }
+    return false;
+}
+
+bool SecCheckErrno(int result, CFErrorRef *error, CFStringRef format, ...) {
+    if (result == 0) return true;
+    if (error) {
+        va_list args;
+        int errnum = errno;
+        CFIndex code = errnum;
+        CFErrorRef previousError = *error;
+
+        *error = NULL;
+        va_start(args, format);
+        CFStringRef message = CFStringCreateWithFormatAndArguments(kCFAllocatorDefault, NULL, format, args);
+        va_end(args);
+        SecCFCreateErrorWithFormat(code, kSecErrnoDomain, previousError, error, NULL, CFSTR("%@: [%d] %s"), message, errnum, strerror(errnum));
+        CFReleaseSafe(message);
+    }
+    return false;
+}
+
+bool SecError(OSStatus status, CFErrorRef *error, CFStringRef format, ...) {
+    if (status == 0) return true;
+    if (error) {
+        va_list args;
+        CFIndex code = status;
+        CFErrorRef previousError = *error;
+
+        *error = NULL;
+        va_start(args, format);
+        SecCFCreateErrorWithFormatAndArguments(code, kSecErrorDomain, previousError, error, NULL, format, args);
+        va_end(args);
+    }
+    return false;
+}
+
+bool SecCFCreateError(CFIndex errorCode, CFStringRef domain, CFStringRef descriptionString,
+                      CFErrorRef previousError, CFErrorRef *newError)
+{
+#pragma clang diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-security"
+    return SecCFCreateErrorWithFormat(errorCode, domain, previousError, newError, NULL, descriptionString);
+#pragma clang diagnostic pop
+}
+
+bool SecCFCreateErrorWithFormat(CFIndex errorCode, CFStringRef domain, CFErrorRef previousError, CFErrorRef *newError,
+                                CFDictionaryRef formatoptions, CFStringRef format, ...)
+{
+    va_list args;
+    va_start(args, format);
+
+    bool result = SecCFCreateErrorWithFormatAndArguments(errorCode, domain, previousError, newError, formatoptions, format, args);
+
+    va_end(args);
+
+    return result;
+}
+
+bool SecCFCreateErrorWithFormatAndArguments(CFIndex errorCode, CFStringRef domain,
+                                            CFErrorRef previousError, CFErrorRef *newError,
+                                            CFDictionaryRef formatoptions, CFStringRef format, va_list args)
+{
+    if (newError && !(*newError)) {
+        CFStringRef formattedString = CFStringCreateWithFormatAndArguments(NULL, formatoptions, format, args);
+        
+        const void* keys[2] =   { kCFErrorDescriptionKey,   kCFErrorUnderlyingErrorKey};
+        const void* values[2] = { formattedString,          previousError };
+        const CFIndex numEntriesToUse = (previousError != NULL) ? 2 : 1;
+
+        *newError = CFErrorCreateWithUserInfoKeysAndValues(kCFAllocatorDefault, domain, errorCode,
+                                                           keys, values, numEntriesToUse);
+
+        CFReleaseNull(formattedString);
+        if (previousError)
+            secnotice("error", "encapsulated %@ with new error: %@", previousError, *newError);
+    } else {
+        if (previousError && newError && (previousError != *newError)) {
+            secnotice("error", "dropping %@", previousError);
+            CFRelease(previousError);
+        }
+    }
+
+    return false;
+}