Move to using C rather than C++ for compilation

1 files changed, 74 insertions, 0 deletions

diff --git a/ossfuzz/standaloneengine.c b/ossfuzz/standaloneengine.c
new file mode 100644
index 0000000..175360e
--- /dev/null
+++ b/ossfuzz/standaloneengine.c
@@ -0,0 +1,74 @@
+#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;
+  for(ii = 1; ii < argc; ii++)
+  {
+    FILE *infile;
+    printf("[%s] ", argv[ii]);
+
+    /* Try and open the file. */
+    infile = fopen(argv[ii], "rb");
+    if(infile)
+    {
+      uint8_t *buffer = NULL;
+      size_t buffer_len;
+
+      printf("Opened.. ");
+
+      /* 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("Read %zu bytes, fuzzing.. ", buffer_len);
+
+        /* Call the fuzzer with the data. */
+        LLVMFuzzerTestOneInput(buffer, buffer_len);
+
+        printf("complete !!");
+
+        /* 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]);
+    }
+
+    printf("\n");
+  }
+}