added strlcpy and strlcat (safe BSD C functions)

1 files changed, 43 insertions, 0 deletions

diff --git a/src/port/string.c b/src/port/string.c
index 78c3685..942e688 100644
--- a/src/port/string.c
+++ b/src/port/string.c
@@ -118,3 +118,46 @@ int wolf_port_strncasecmp( const char *s1, const char *s2, size_t n ) {
 }
 
 #endif /* !defined HAVE_STRNCASECMP || defined TEST_STRNCASECMP */
+
+#if !defined HAVE_STRLCPY || defined TEST_STRLCPY
+size_t wolf_port_strlcpy( char *d, const char *s, size_t bufsize ) {
+	size_t len;
+	size_t ret;
+
+	if( !d || !s || bufsize <= 0 ) return 0;
+
+	len = strlen( s );
+	ret = len;
+	if( len >= bufsize ) {
+		len = bufsize-1;
+	}
+
+	memcpy( d, s, len );
+	d[len] = 0;
+
+	return ret;
+}
+#endif /* !defined HAVE_STRLCPY || defined TEST_STRLCPY */
+
+#if !defined HAVE_STRLCAT || defined TEST_STRLCAT
+size_t wolf_port_strlcat( char *d, const char *s, size_t bufsize ) {
+	size_t len1;
+	size_t len2;
+	size_t ret;
+
+	if( !d || !s || bufsize <= 0 ) return 0;
+
+	len1 = strlen( d );
+	len2 = strlen( s );
+	ret = len1+len2;
+	if( len1+len2 >= bufsize ) {
+		len2 = bufsize - (len1+1);
+	}
+	if( len2 >= 0 ) {
+		memcpy( d+len1, s, len2 );
+		d[len1+len2] = 0;
+	}
+
+	return ret;
+}
+#endif /* !defined HAVE_STRLCAT || defined TEST_STRLCAT */