From 57001ce3bb97455d799f0a2180b7bf1287ffd71a Mon Sep 17 00:00:00 2001
From: Max Dymond <cmeister2@gmail.com>
Date: Fri, 1 Sep 2017 21:48:41 +0100
Subject: ossfuzz: Move to C++ for curl_fuzzer.

Automake gets confused if you want to use C++ static libraries with C
code - basically we need to involve the clang++ linker. The easiest way
of achieving this is to rename the C code as C++ code. This gets us a
bit further along the path and ought to be compatible with Google's
version of clang.
---
 tests/fuzz/standalone_fuzz_target_runner.cc | 89 +++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 tests/fuzz/standalone_fuzz_target_runner.cc

(limited to 'tests/fuzz/standalone_fuzz_target_runner.cc')

diff --git a/tests/fuzz/standalone_fuzz_target_runner.cc b/tests/fuzz/standalone_fuzz_target_runner.cc
new file mode 100644
index 000000000..9b2316ed6
--- /dev/null
+++ b/tests/fuzz/standalone_fuzz_target_runner.cc
@@ -0,0 +1,89 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2017, Max Dymond, <cmeister2@gmail.com>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "testinput.h"
+
+/**
+ * Main procedure for standalone fuzzing engine.
+ *
+ * Reads filenames from the argument array. For each filename, read the file
+ * into memory and then call the fuzzing interface with the data.
+ */
+int main(int argc, char **argv)
+{
+  int ii;
+  FILE *infile;
+  uint8_t *buffer = NULL;
+  size_t buffer_len;
+
+  for(ii = 1; ii < argc; ii++) {
+    /* Try and open the file. */
+    infile = fopen(argv[ii], "rb");
+    if(infile) {
+      printf("[%s] Open succeeded! \n", argv[ii]);
+
+      /* Get the length of the file. */
+      fseek(infile, 0L, SEEK_END);
+      buffer_len = ftell(infile);
+
+      /* Reset the file indicator to the beginning of the file. */
+      fseek(infile, 0L, SEEK_SET);
+
+      /* Allocate a buffer for the file contents. */
+      buffer = (uint8_t *)calloc(buffer_len, sizeof(uint8_t));
+      if(buffer) {
+        /* Read all the text from the file into the buffer. */
+        fread(buffer, sizeof(uint8_t), buffer_len, infile);
+        printf("[%s] Read %zu bytes, calling fuzzer\n", argv[ii], buffer_len);
+
+        /* Call the fuzzer with the data. */
+        LLVMFuzzerTestOneInput(buffer, buffer_len);
+
+        printf("[%s] Fuzzing complete\n", argv[ii]);
+
+        /* Free the buffer as it's no longer needed. */
+        free(buffer);
+        buffer = NULL;
+      }
+      else
+      {
+        fprintf(stderr,
+                "[%s] Failed to allocate %zu bytes \n",
+                argv[ii],
+                buffer_len);
+      }
+
+      /* Close the file as it's no longer needed. */
+      fclose(infile);
+      infile = NULL;
+    }
+    else
+    {
+      /* Failed to open the file. Maybe wrong name or wrong permissions? */
+      fprintf(stderr, "[%s] Open failed. \n", argv[ii]);
+    }
+  }
+}
-- 
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