1 files changed, 52 insertions, 0 deletions
diff --git a/APACHE_1_3_42/src/ap/ap_cpystrn.c b/APACHE_1_3_42/src/ap/ap_cpystrn.c
new file mode 100644
index 0000000000..4601488a11
--- /dev/null
+++ b/APACHE_1_3_42/src/ap/ap_cpystrn.c
@@ -0,0 +1,52 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+#include "httpd.h"
+
+/*
+ * Apache's "replacement" for the strncpy() function. We roll our
+ * own to implement these specific changes:
+ *   (1) strncpy() doesn't always null terminate and we want it to.
+ *   (2) strncpy() null fills, which is bogus, esp. when copy 8byte
+ *       strings into 8k blocks.
+ *   (3) Instead of returning the pointer to the beginning of
+ *       the destination string, we return a pointer to the
+ *       terminating '\0' to allow us to "check" for truncation
+ *
+ * ap_cpystrn() follows the same call structure as strncpy().
+ */
+
+API_EXPORT(char *) ap_cpystrn(char *dst, const char *src, size_t dst_size)
+{
+
+    char *d, *end;
+
+    if (!dst_size)
+        return (dst);
+
+    d = dst;
+    end = dst + dst_size - 1;
+
+    for (; d < end; ++d, ++src) {
+	if (!(*d = *src)) {
+	    return (d);
+	}
+    }
+
+    *d = '\0';	/* always null terminate */
+
+    return (d);
+}