Security-55471.tar.gz

[apple/security.git] / utilities / src / SecCFError.c

diff --git a/utilities/src/SecCFError.c b/utilities/src/SecCFError.c
new file mode 100644 (file)
index 0000000..cd25943
--- /dev/null
+++ b/utilities/src/SecCFError.c
@@ -0,0 +1,106 @@
+//
+//  SecCFError.c
+//  utilities
+//
+//  Created by Mitch Adler on 7/18/12.
+//  Copyright (c) 2012 Apple Inc. All rights reserved.
+//
+
+#include <Security/SecBase.h>
+#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 == errSecSuccess) 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;
+}
+
+
+void SecCFCreateError(CFIndex errorCode, CFStringRef domain, CFStringRef descriptionString,
+                      CFErrorRef previousError, CFErrorRef *newError)
+{
+#pragma clang diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-security"
+    SecCFCreateErrorWithFormat(errorCode, domain, previousError, newError, NULL, descriptionString);
+#pragma clang diagnostic pop
+}
+
+void SecCFCreateErrorWithFormat(CFIndex errorCode, CFStringRef domain, CFErrorRef previousError, CFErrorRef *newError,
+                                CFDictionaryRef formatoptions, CFStringRef format, ...)
+{
+    va_list args;
+    va_start(args, format);
+
+    SecCFCreateErrorWithFormatAndArguments(errorCode, domain, previousError, newError, formatoptions, format, args);
+
+    va_end(args);
+}
+
+void 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);
+        }
+    }
+}