1 files changed, 76 insertions, 0 deletions
diff --git a/lib/includes/hicn/util/sstrncpy.h b/lib/includes/hicn/util/sstrncpy.h
new file mode 100644
index 000000000..0b397c26b
--- /dev/null
+++ b/lib/includes/hicn/util/sstrncpy.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2021 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef UTIL_SSTRNCPY_H
+#define UTIL_SSTRNCPY_H
+
+#ifndef __STDC_WANT_LIB_EXT1__
+#define __STDC_WANT_LIB_EXT1__ 1
+#endif
+
+#include <errno.h>
+#include <string.h>
+
+#ifdef __STDC_LIB_EXT1__
+// If safe string functions already available in the system, use them
+#elif ENABLE_SAFEC
+// If safe string functions not available and SafeC is enabled,
+// use SafeC
+#include <safe_string.h>
+#else
+// Use custom safe string functions
+typedef int errno_t;
+#define EOK 0
+
+#ifndef HICN_VPP_PLUGIN
+/* This function is already defined in vppinfra/string.h */
+
+/**
+ * @brief This function assures a null byte at the end of the buffer.
+ */
+static inline errno_t
+strcpy_s (char *dst, size_t n, const char *src)
+{
+  if (!dst || !src || !n)
+    {
+      fprintf (stderr, "[strncpy] invalid input received");
+      return EINVAL;
+    }
+
+  dst[n - 1] = 0;
+  strncpy (dst, src, n);
+
+  if (dst[n - 1] != 0)
+    {
+      fprintf (stderr, "[strncpy] '%s' has been trucated\n", src);
+      dst[n - 1] = 0;
+      return EINVAL;
+    }
+
+  return EOK;
+}
+
+static inline size_t
+strnlen_s (const char *s, size_t maxlen)
+{
+  if (s == NULL)
+    return 0;
+
+  return strnlen (s, maxlen);
+}
+#endif /* HICN_VPP_PLUGIN */
+
+#endif /* __STDC_LIB_EXT1__ */
+#endif /* UTIL_SSTRNCPY_H */