1 files changed, 100 insertions, 0 deletions
diff --git a/lib/isc/error.c b/lib/isc/error.c
new file mode 100644
index 0000000..b0fe500
--- /dev/null
+++ b/lib/isc/error.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+
+/*! \file */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <isc/error.h>
+#include <isc/msgs.h>
+#include <isc/print.h>
+
+/*% Default unexpected callback. */
+static void
+default_unexpected_callback(const char *, int, const char *, va_list)
+     ISC_FORMAT_PRINTF(3, 0);
+
+/*% Default fatal callback. */
+static void
+default_fatal_callback(const char *, int, const char *, va_list)
+     ISC_FORMAT_PRINTF(3, 0);
+
+/*% unexpected_callback */
+static isc_errorcallback_t unexpected_callback = default_unexpected_callback;
+static isc_errorcallback_t fatal_callback = default_fatal_callback;
+
+void
+isc_error_setunexpected(isc_errorcallback_t cb) {
+	if (cb == NULL)
+		unexpected_callback = default_unexpected_callback;
+	else
+		unexpected_callback = cb;
+}
+
+void
+isc_error_setfatal(isc_errorcallback_t cb) {
+	if (cb == NULL)
+		fatal_callback = default_fatal_callback;
+	else
+		fatal_callback = cb;
+}
+
+void
+isc_error_unexpected(const char *file, int line, const char *format, ...) {
+	va_list args;
+
+	va_start(args, format);
+	(unexpected_callback)(file, line, format, args);
+	va_end(args);
+}
+
+void
+isc_error_fatal(const char *file, int line, const char *format, ...) {
+	va_list args;
+
+	va_start(args, format);
+	(fatal_callback)(file, line, format, args);
+	va_end(args);
+	abort();
+}
+
+void
+isc_error_runtimecheck(const char *file, int line, const char *expression) {
+	isc_error_fatal(file, line, "RUNTIME_CHECK(%s) %s", expression,
+			isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
+				       ISC_MSG_FAILED, "failed"));
+}
+
+static void
+default_unexpected_callback(const char *file, int line, const char *format,
+			    va_list args)
+{
+	fprintf(stderr, "%s:%d: ", file, line);
+	vfprintf(stderr, format, args);
+	fprintf(stderr, "\n");
+	fflush(stderr);
+}
+
+static void
+default_fatal_callback(const char *file, int line, const char *format,
+		       va_list args)
+{
+	fprintf(stderr, "%s:%d: %s: ", file, line,
+		isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
+			       ISC_MSG_FATALERROR, "fatal error"));
+	vfprintf(stderr, format, args);
+	fprintf(stderr, "\n");
+	fflush(stderr);
+}