1 files changed, 46 insertions, 0 deletions
diff --git a/FICS/maxxes-utils.c b/FICS/maxxes-utils.c
new file mode 100644
index 0000000..7db8369
--- /dev/null
+++ b/FICS/maxxes-utils.c
@@ -0,0 +1,46 @@
+// SPDX-FileCopyrightText: 2024 Markus Uhlin <maxxe@rpblc.net>
+// SPDX-License-Identifier: ISC
+
+#include <err.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#if __linux__
+#include <bsd/string.h>
+#endif
+
+#include "maxxes-utils.h"
+
+void
+snprintf_trunc_chk(const char *file, const long int line,
+    char *str, size_t size, const char *format, ...)
+{
+	int ret;
+	va_list ap;
+
+	va_start(ap, format);
+	ret = vsnprintf(str, size, format, ap);
+	va_end(ap);
+
+	if (ret < 0 || (size_t)ret >= size)
+		warnx("%s:%ld: warning: vsnprintf() truncated", file, line);
+}
+
+void
+strlcpy_trunc_chk(char *dst, const char *src, size_t dstsize,
+    const char *file,
+    const long int line)
+{
+	if (strlcpy(dst, src, dstsize) >= dstsize)
+		warnx("%s:%ld: warning: strlcpy() truncated", file, line);
+}
+
+void
+strlcat_trunc_chk(char *dst, const char *src, size_t dstsize,
+    const char *file,
+    const long int line)
+{
+	if (strlcat(dst, src, dstsize) >= dstsize)
+		warnx("%s:%ld: warning: strlcat() truncated", file, line);
+}