test server http dont print junk if string too long

Signed-off-by: Andy Green <andy.green@linaro.org>

diff --git a/test-server/test-server-http.c b/test-server/test-server-http.c
index aa9502f..4c93496 100644 (file)
--- a/test-server/test-server-http.c
+++ b/test-server/test-server-http.c
@@ -62,7 +62,7 @@ struct serveable {
 void
 dump_handshake_info(struct lws *wsi)
 {
-       int n = 0;
+       int n = 0, len;
        char buf[256];
        const unsigned char *c;
 
@@ -73,12 +73,14 @@ dump_handshake_info(struct lws *wsi)
                        continue;
                }
 
-               if (!lws_hdr_total_length(wsi, n)) {
+               len = lws_hdr_total_length(wsi, n);
+               if (!len || len > sizeof(buf) - 1) {
                        n++;
                        continue;
                }
 
                lws_hdr_copy(wsi, buf, sizeof buf, n);
+               buf[sizeof(buf) - 1] = '\0';
 
                fprintf(stderr, "    %s = %s\n", (char *)c, buf);
                n++;