Add the tolower variant of strlcpy function.

2 files changed, 33 insertions, 1 deletions

diff --git a/src/util.c b/src/util.c
index 90497c803..88d62f974 100644
--- a/src/util.c
+++ b/src/util.c
@@ -1325,6 +1325,29 @@ rspamd_strlcpy (gchar *dst, const gchar *src, gsize siz)
 	return (s - src - 1);    /* count does not include NUL */
 }
 
+gsize
+rspamd_strlcpy_tolower (gchar *dst, const gchar *src, gsize siz)
+{
+	gchar *d = dst;
+	const gchar *s = src;
+	gsize n = siz;
+
+	/* Copy as many bytes as will fit */
+	if (n != 0) {
+		while (--n != 0) {
+			if ((*d++ = g_ascii_tolower (*s++)) == '\0') {
+				break;
+			}
+		}
+	}
+
+	if (n == 0 && siz != 0) {
+		*d = '\0';
+	}
+
+	return (s - src - 1);    /* count does not include NUL */
+}
+
 /* Compare two emails for building emails tree */
 gint
 compare_email_func (gconstpointer a, gconstpointer b)
diff --git a/src/util.h b/src/util.h
index c95cc5448..405d289a3 100644
--- a/src/util.h
+++ b/src/util.h
@@ -186,7 +186,7 @@ void g_queue_clear (GQueue *queue);
 #endif
 
 
-/*
+/**
  * Copy src to dest limited to len, in compare with standart strlcpy(3) rspamd strlcpy does not
  * traverse the whole string and it is possible to use it for non NULL terminated strings. This is
  * more like memccpy(dst, src, size, '\0')
@@ -198,6 +198,15 @@ void g_queue_clear (GQueue *queue);
  */
 gsize rspamd_strlcpy (gchar *dst, const gchar *src, gsize siz);
 
+/**
+ * Lowercase strlcpy variant
+ * @param dst
+ * @param src
+ * @param siz
+ * @return
+ */
+gsize rspamd_strlcpy_tolower (gchar *dst, const gchar *src, gsize siz);
+
 /*
  * Strip <> from email address
  */