Security-55163.44.tar.gz

[apple/security.git] / libsecurity_utilities / lib / errors.cpp

diff --git a/libsecurity_utilities/lib/errors.cpp b/libsecurity_utilities/lib/errors.cpp
new file mode 100644 (file)
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+++ b/libsecurity_utilities/lib/errors.cpp
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2000-2004 Apple Computer, 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@
+ */
+
+
+//
+// Error hierarchy
+//
+#include <security_utilities/errors.h>
+#include <security_utilities/debugging.h>
+#include <typeinfo>
+#include <stdio.h>
+
+
+//@@@
+// From cssmapple.h - layering break
+// Where should this go?
+//@@@
+#define errSecErrnoBase 100000
+#define errSecErrnoLimit 100255
+
+//
+// The base of the exception hierarchy.
+// Note that the debug output here depends on a particular
+// implementation feature of gcc; to wit, that the exception object
+// is created and then copied (at least once) via its copy constructor.
+// If your compiler does not invoke the copy constructor, you won't get
+// debug output, but nothing worse should happen.
+//
+CommonError::CommonError()
+{
+}
+
+
+//
+// We strongly encourage catching all exceptions by const reference, so the copy
+// constructor of our exceptions should never be called.
+// We trace a copy to help catch violations of this rule.
+//
+CommonError::CommonError(const CommonError &source)
+{
+       SECURITY_EXCEPTION_COPY(this, &source);
+}
+
+CommonError::~CommonError() throw ()
+{
+       SECURITY_EXCEPTION_HANDLED(this);
+}
+
+
+//
+// UnixError exceptions
+//
+UnixError::UnixError() : error(errno)
+{
+       SECURITY_EXCEPTION_THROW_UNIX(this, errno);
+}
+
+UnixError::UnixError(int err) : error(err)
+{
+       SECURITY_EXCEPTION_THROW_UNIX(this, err);
+}
+
+const char *UnixError::what() const throw ()
+{ return "UNIX error exception"; }
+
+
+OSStatus UnixError::osStatus() const
+{
+       return error + errSecErrnoBase;
+}
+
+int UnixError::unixError() const
+{ return error; }
+
+void UnixError::throwMe(int err) { throw UnixError(err); }
+
+// @@@ This is a hack for the Network protocol state machine
+UnixError UnixError::make(int err) { return UnixError(err); }
+
+
+//
+// MacOSError exceptions
+//
+MacOSError::MacOSError(int err) : error(err)
+{
+       SECURITY_EXCEPTION_THROW_OSSTATUS(this, err);
+}
+
+const char *MacOSError::what() const throw ()
+{ return "MacOS error"; }
+
+OSStatus MacOSError::osStatus() const
+{ return error; }
+
+int MacOSError::unixError() const
+{
+       // embedded UNIX errno values are returned verbatim
+       if (error >= errSecErrnoBase && error <= errSecErrnoLimit)
+               return error - errSecErrnoBase;
+
+       switch (error) {
+       default:
+               // cannot map this to errno space
+               return -1;
+    }
+}
+
+void MacOSError::throwMe(int error)
+{ throw MacOSError(error); }
+
+
+//
+// CFError exceptions
+//
+CFError::CFError()
+{
+       SECURITY_EXCEPTION_THROW_CF(this);
+}
+
+const char *CFError::what() const throw ()
+{ return "CoreFoundation error"; }
+
+// can't get this from CarbonCore/MacErrors, but it's too good to pass up
+enum {
+       coreFoundationUnknownErr      = -4960
+};
+
+OSStatus CFError::osStatus() const
+{ return coreFoundationUnknownErr; }
+
+int CFError::unixError() const
+{
+       return EFAULT;          // nothing really matches
+}
+
+void CFError::throwMe()
+{ throw CFError(); }