From f48c4d808ba6645c0f2f12c1a21339153206af1a Mon Sep 17 00:00:00 2001
From: Jacob Barthelmeh <jacob@wolfssl.com>
Date: Mon, 16 Apr 2018 16:45:34 -0600
Subject: [PATCH] add check for input size

---
 pem_cert/target.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pem_cert/target.c b/pem_cert/target.c
index 916f372..c514fda 100644
--- a/pem_cert/target.c
+++ b/pem_cert/target.c
@@ -25,6 +25,8 @@
 #include <wolfssl/options.h>
 #include <wolfssl/ssl.h>
 
+#define WC_MAX_FUZZ_INPUT_SZ 25000
+
 /* testing wolfSSL_CTX_use_certificate_buffer with PEM as the filetype*/
 
 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t sz)
@@ -32,6 +34,11 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t sz)
     WOLFSSL_CTX *ctx;
     int          ret;
 
+    /* avoid 25s timeout with parsing large files */
+    if (sz > WS_MAX_FUZZ_INPUT_SZ) {
+        return 0;
+    }
+
     wolfSSL_Init();
 
     ctx = wolfSSL_CTX_new(wolfTLSv1_2_server_method());