1 files changed, 99 insertions, 0 deletions

diff --git a/src/lib/libssl/tls13_error.c b/src/lib/libssl/tls13_error.c
new file mode 100644
index 0000000000..295b6c4fab
--- /dev/null
+++ b/src/lib/libssl/tls13_error.c
@@ -0,0 +1,99 @@
+/* $OpenBSD: tls13_error.c,v 1.1 2020/01/20 13:10:37 jsing Exp $ */
+/*
+ * Copyright (c) 2014,2019 Joel Sing <jsing@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <errno.h>
+
+#include "tls13_internal.h"
+
+void
+tls13_error_clear(struct tls13_error *error)
+{
+        error->code = 0;
+        error->subcode = 0;
+        error->errnum = 0;
+        error->file = NULL;
+        error->line = 0;
+        free(error->msg);
+        error->msg = NULL;
+}
+
+static int
+tls13_error_vset(struct tls13_error *error, int code, int subcode, int errnum,
+    const char *file, int line, const char *fmt, va_list ap)
+{
+        char *errmsg = NULL;
+        int rv = -1;
+
+        tls13_error_clear(error);
+
+        error->code = code;
+        error->subcode = subcode;
+        error->errnum = errnum;
+        error->file = file;
+        error->line = line;
+
+        if (vasprintf(&errmsg, fmt, ap) == -1) {
+                errmsg = NULL;
+                goto err;
+        }
+
+        if (errnum == -1) {
+                error->msg = errmsg;
+                return 0;
+        }
+
+        if (asprintf(&error->msg, "%s: %s", errmsg, strerror(errnum)) == -1) {
+                error->msg = NULL;
+                goto err;
+        }
+        rv = 0;
+
+ err:
+        free(errmsg);
+
+        return rv;
+}
+
+int
+tls13_error_set(struct tls13_error *error, int code, int subcode,
+    const char *file, int line, const char *fmt, ...)
+{
+        va_list ap;
+        int errnum, rv;
+
+        errnum = errno;
+
+        va_start(ap, fmt);
+        rv = tls13_error_vset(error, code, subcode, errnum, file, line, fmt, ap);
+        va_end(ap);
+
+        return (rv);
+}
+
+int
+tls13_error_setx(struct tls13_error *error, int code, int subcode,
+    const char *file, int line, const char *fmt, ...)
+{
+        va_list ap;
+        int rv;
+
+        va_start(ap, fmt);
+        rv = tls13_error_vset(error, code, subcode, -1, file, line, fmt, ap);
+        va_end(ap);
+
+        return (rv);
+}