1 files changed, 5 insertions, 4 deletions

diff --git a/html.c b/html.c
index 337baeb..eaabf72 100644
--- a/html.c
+++ b/html.c
@@ -259,37 +259,38 @@ int hextoint(char c)
 	if (c >= 'a' && c <= 'f')
 		return 10 + c - 'a';
 	else if (c >= 'A' && c <= 'F')
 		return 10 + c - 'A';
 	else if (c >= '0' && c <= '9')
 		return c - '0';
 	else
 		return -1;
 }
 
 char *convert_query_hexchar(char *txt)
 {
-	int d1, d2;
-	if (strlen(txt) < 3) {
+	int d1, d2, n;
+	n = strlen(txt);
+	if (n < 3) {
 		*txt = '\0';
 		return txt-1;
 	}
 	d1 = hextoint(*(txt+1));
 	d2 = hextoint(*(txt+2));
 	if (d1<0 || d2<0) {
-		strcpy(txt, txt+3);
+		memmove(txt, txt+3, n-3);
 		return txt-1;
 	} else {
 		*txt = d1 * 16 + d2;
-		strcpy(txt+1, txt+3);
+		memmove(txt+1, txt+3, n-2);
 		return txt;
 	}
 }
 
 int http_parse_querystring(const char *txt_, void (*fn)(const char *name, const char *value))
 {
 	char *t, *txt, *value = NULL, c;
 
 	if (!txt_)
 		return 0;
 
 	t = txt = strdup(txt_);