support fuzz test

Signed-off-by: Nhaozi007 <liuhao27@huawei.com>

tests/CMakeLists.txt

@@ -60,6 +60,13 @@ macro(_DEFINE_NEW_TEST)
 endmacro()
 
 # --------------- testcase add here -----------------
+
+# fuzz test
+option(ENABLE_FUZZ "set lcr fuzz option" OFF)
+if (ENABLE_FUZZ)
+    add_subdirectory(fuzz)
+endif()
+
 #   api testcase
 _DEFINE_NEW_TEST(log_ut log_testcase)
 _DEFINE_NEW_TEST(libocispec_ut libocispec_testcase)

tests/fuzz/CMakeLists.txt

+# lcr: fuzz tests
+#
+# Copyright (c) Huawei Technologies Co., Ltd. 2020. All rights reserved.
+#
+# Authors:
+# Haozi007 <liuhao27@huawei.com>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+#
+
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize-coverage=trace-pc")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize-coverage=trace-pc")
+set(EXE log_fuzz)
+
+configure_file("dict/log_fuzz.dict" ${CMAKE_BINARY_DIR}/tests/fuzz/dict/log_fuzz.dict COPYONLY)
+configure_file("fuzz.sh" ${CMAKE_BINARY_DIR}/tests/fuzz/fuzz.sh COPYONLY)
+
+add_executable(${EXE} log_fuzz.cc)
+
+target_include_directories(${EXE} PUBLIC
+    ${GTEST_INCLUDE_DIR}
+    PUBLIC ${CMAKE_SOURCE_DIR}/third_party
+    PUBLIC ${CMAKE_SOURCE_DIR}/third_party/libocispec
+    )
+
+set_target_properties(${EXE} PROPERTIES LINKER_LANGUAGE CXX)
+set_target_properties(${EXE} PROPERTIES LINK_FLAGS "-fsanitize-coverage=trace-pc")
+target_link_libraries(${EXE} ${CMAKE_THREAD_LIBS_INIT} isula_libutils Fuzzer pthread)

tests/fuzz/dict/log_fuzz.dict

+"x,,debug,prefix,stdout"
+",/tmp/fake.fifo,info,prefix,stdout"
+"x,,ERROR,prefix,stdout"
+"x,/tmp/fake.fifo,,prefix,stdout"
+"x,/tmp/fake.fifo,info,,stdout"
+"x,/tmp/fake.fifo,crit,prefix,"
+"x,/tmp/fake.fifo,fatal,prefix,fifo"
+",/tmp/fake.fifo,info,prefix,fifo"
+"x,,ERROR,prefix,fifo"
+"x,/tmp/fake.fifo,,prefix,fifo"
+"x,/tmp/fake.fifo,debug,,fifo"
+"x,,invalid,prefix,stdout"
+"x,/tmp/fake.fifo,invalid,prefix,fifo"
+"invalid"

tests/fuzz/fuzz.sh

+# lcr: fuzz tests
+#
+# Copyright (c) Huawei Technologies Co., Ltd. 2020. All rights reserved.
+#
+# Authors:
+# Haozi007 <liuhao27@huawei.com>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+#
+
+#!/bin/bash
+
+LIB_FUZZING_ENGINE="/lib64/libFuzzer.a"
+FUZZ_OPTION="corpus -dict=./dict/log_fuzz.dict -runs=100000 -max_total_time=3600"
+
+if [ ! -f "$LIB_FUZZING_ENGINE" ];then
+    echo "$LIB_FUZZING_ENGINE not exist, pls check"
+    exit 1
+fi
+
+# compile fuzz testcase
+make -j
+
+# run fuzz testcases
+./log_fuzz ${FUZZ_OPTION} -artifact_prefix=log_fuzz-
+
+echo "########### Fuzz Result ##############"
+crash=`find -name "*-crash-*"`
+if [ x"${crash}" != x"" ];then
+    echo "find bugs while fuzzing, pls check <*-crash-*> file"
+    find -name "*-crash-*"
+    exit 1
+else
+    echo "all fuzz success."
+fi
+

tests/fuzz/log_fuzz.cc

+/******************************************************************************
+ * log_fuzz: testcase for log
+ *
+ * Copyright (c) Huawei Technologies Co., Ltd. 2020. All rights reserved.
+ *
+ * Authors:
+ * Haozi007 <liuhao27@huawei.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ ********************************************************************************/
+
+#include <iostream>
+#include <sstream>
+#include <string>
+#include <vector>
+#include "log.h"
+
+
+extern "C" void testLog(struct isula_libutils_log_config *conf)
+{
+    (void)isula_libutils_log_enable(conf);
+    INFO("info log");
+    isula_libutils_set_log_prefix(conf->prefix);
+    INFO("test prefix info");
+    isula_libutils_log_disable();
+}
+
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    const char *default_name = "iSula";
+    struct isula_libutils_log_config tconf = {0};
+    std::string testData(reinterpret_cast<const char *>(data), size);
+    std::vector<std::string> ret_vec;
+    std::string tmpstr;
+    std::istringstream istr(testData);
+    while(std::getline(istr, tmpstr, ',')) {
+        ret_vec.push_back(tmpstr);
+    }
+
+    if (ret_vec.size() == 5) {
+        if (ret_vec[0] != "") {
+            tconf.name = ret_vec[0].c_str();
+        }
+        if (ret_vec[1] != "") {
+            tconf.file = ret_vec[1].c_str();
+        }
+        if (ret_vec[2] != "") {
+            tconf.priority = ret_vec[2].c_str();
+        }
+        if (ret_vec[3] != "") {
+            tconf.prefix = ret_vec[3].c_str();
+        }
+        if (ret_vec[4] != "") {
+            tconf.driver = ret_vec[4].c_str();
+        }
+    } else {
+        isula_libutils_default_log_config(default_name, &tconf);
+    }
+
+    testLog(&tconf);
+    return 0;
+}
+