From 482cbfc4e1299434a6f632fe7f4b4e3704e65e87 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Wed, 28 Aug 2013 14:43:16 +0300
Subject: add file access fuzzer.

---
 src/utils/fuzzer.cpp      | 58 +++++++++++++++++++++++++++++++++++++++++++++++
 src/utils/fuzzer.h        | 34 +++++++++++++++++++++++++++
 src/utils/physfsrwops.cpp |  8 ++++++-
 src/utils/xml.cpp         |  6 +++++
 4 files changed, 105 insertions(+), 1 deletion(-)
 create mode 100644 src/utils/fuzzer.cpp
 create mode 100644 src/utils/fuzzer.h

(limited to 'src/utils')

diff --git a/src/utils/fuzzer.cpp b/src/utils/fuzzer.cpp
new file mode 100644
index 000000000..4342899c3
--- /dev/null
+++ b/src/utils/fuzzer.cpp
@@ -0,0 +1,58 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2013  The ManaPlus Developers
+ *
+ *  This file is part of The ManaPlus Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "utils/fuzzer.h"
+
+#ifdef USE_FUZZER
+
+#include "client.h"
+#include "logger.h"
+
+#include "utils/stringutils.h"
+
+#include "debug.h"
+
+namespace
+{
+    Logger *fuzz = nullptr;
+    int fuzzRand = 50;
+}  // namespace
+
+void Fuzzer::init()
+{
+    fuzz = new Logger;
+    fuzz->setLogFile(client->getLocalDataDirectory() + "/fuzzer.log");
+    unsigned int sr = time(nullptr);
+    fuzz->log("Srand: %u", sr);
+    srand(sr);
+}
+
+bool Fuzzer::conditionTerminate(const char *const name)
+{
+    if ((rand() % 100) <= fuzzRand)
+    {
+        fuzz->log("deleted: %s", name);
+        return true;
+    }
+    fuzz->log("passed: %s", name);
+    return false;
+}
+
+#endif
diff --git a/src/utils/fuzzer.h b/src/utils/fuzzer.h
new file mode 100644
index 000000000..91193901d
--- /dev/null
+++ b/src/utils/fuzzer.h
@@ -0,0 +1,34 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2013  The ManaPlus Developers
+ *
+ *  This file is part of The ManaPlus Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef UTILS_FUZZER_H
+#define UTILS_FUZZER_H
+
+#include "localconsts.h"
+
+#ifdef USE_FUZZER
+namespace Fuzzer
+{
+    void init();
+    bool conditionTerminate(const char *const name);
+}  // namespace Fuzzer
+
+#endif  // USE_FUZZER
+#endif  // UTILS_FUZZER_H
diff --git a/src/utils/physfsrwops.cpp b/src/utils/physfsrwops.cpp
index 8216e3794..31b86058c 100644
--- a/src/utils/physfsrwops.cpp
+++ b/src/utils/physfsrwops.cpp
@@ -24,7 +24,9 @@
 
 #include "utils/physfsrwops.h"
 
-#include <stdio.h>  /* used for SEEK_SET, SEEK_CUR, SEEK_END ... */
+#include "utils/fuzzer.h"
+
+#include <stdio.h>
 
 #include "debug.h"
 
@@ -214,6 +216,10 @@ SDL_RWops *PHYSFSRWOPS_openRead(const char *const fname)
 #ifdef __APPLE__
     if (!checkFilePath(fname))
         return nullptr;
+#endif
+#ifdef USE_FUZZER
+    if (Fuzzer::conditionTerminate(fname))
+        return nullptr;
 #endif
     return create_rwops(PhysFs::openRead(fname));
 } /* PHYSFSRWOPS_openRead */
diff --git a/src/utils/xml.cpp b/src/utils/xml.cpp
index 8e0b03e1e..d19c466d1 100644
--- a/src/utils/xml.cpp
+++ b/src/utils/xml.cpp
@@ -26,6 +26,8 @@
 
 #include "resources/resourcemanager.h"
 
+#include "utils/fuzzer.h"
+
 #include "utils/translation/podict.h"
 
 #include <iostream>
@@ -44,6 +46,10 @@ namespace XML
     Document::Document(const std::string &filename, const bool useResman) :
         mDoc(nullptr)
     {
+#ifdef USE_FUZZER
+        if (Fuzzer::conditionTerminate(filename.c_str()))
+            return;
+#endif
         int size = 0;
         char *data = nullptr;
         if (useResman)
-- 
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