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-rw-r--r--lib/isc/error.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/lib/isc/error.c b/lib/isc/error.c
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--- /dev/null
+++ b/lib/isc/error.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * 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 https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <isc/error.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) failed", expression);
+}
+
+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: fatal error: ", file, line);
+ vfprintf(stderr, format, args);
+ fprintf(stderr, "\n");
+ fflush(stderr);
+}