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oss-fuzz: max size of input data to analyze 10000

This commit is contained in:
Daniel Marjamäki 2019-03-30 11:40:30 +01:00
parent b0c58f2b10
commit 8f9c4ec4a2
4 changed files with 24 additions and 15 deletions
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10
oss-fuzz/main.cpp
View File

@ -27,10 +27,12 @@ public:
}; };
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t dataSize) { extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t dataSize)
{
CppcheckExecutor cppcheckExecutor; if (dataSize < 10000) {
cppcheckExecutor.run(generateCode2(data, dataSize)); CppcheckExecutor cppcheckExecutor;
cppcheckExecutor.run(generateCode2(data, dataSize));
}
return 0; return 0;
} }

3
oss-fuzz/translate.cpp
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@ -4,7 +4,8 @@
#include "type2.h" #include "type2.h"
int main(int argc, char **argv) { int main(int argc, char **argv)
{
const char *filename = argc==2 ? argv[1] : nullptr; const char *filename = argc==2 ? argv[1] : nullptr;
if (!filename) { if (!filename) {

24
oss-fuzz/type2.cpp
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@ -4,7 +4,8 @@
static int getValue(const uint8_t *data, size_t dataSize, uint8_t maxValue, bool *done = nullptr) { static int getValue(const uint8_t *data, size_t dataSize, uint8_t maxValue, bool *done = nullptr)
{
static size_t pos; // current "data" position static size_t pos; // current "data" position
static int dataValue; // value extracted from data static int dataValue; // value extracted from data
static int ones; // ones. This variable tracks if we need to add more stuff in "dataValue". static int ones; // ones. This variable tracks if we need to add more stuff in "dataValue".
@ -29,14 +30,15 @@ static int getValue(const uint8_t *data, size_t dataSize, uint8_t maxValue, bool
return ret; return ret;
} }
static std::string generateExpression2_lvalue(const uint8_t *data, size_t dataSize) { static std::string generateExpression2_lvalue(const uint8_t *data, size_t dataSize)
{
return "var" + std::to_string(1 + getValue(data, dataSize, 5)); return "var" + std::to_string(1 + getValue(data, dataSize, 5));
} }
static std::string generateExpression2_Op(const uint8_t *data, size_t dataSize, int numberOfGlobalConstants) { static std::string generateExpression2_Op(const uint8_t *data, size_t dataSize, int numberOfGlobalConstants)
{
std::ostringstream code; std::ostringstream code;
switch (getValue(data, dataSize, 3)) switch (getValue(data, dataSize, 3)) {
{
case 0: case 0:
code << generateExpression2_lvalue(data, dataSize); code << generateExpression2_lvalue(data, dataSize);
break; break;
@ -50,7 +52,8 @@ static std::string generateExpression2_Op(const uint8_t *data, size_t dataSize,
return code.str(); return code.str();
} }
static std::string generateExpression2_Expr(const uint8_t *data, size_t dataSize, int numberOfGlobalConstants, int depth=0) { static std::string generateExpression2_Expr(const uint8_t *data, size_t dataSize, int numberOfGlobalConstants, int depth=0)
{
++depth; ++depth;
const unsigned int type = (depth > 3) ? 0 : getValue(data, dataSize, 3); const unsigned int type = (depth > 3) ? 0 : getValue(data, dataSize, 3);
const char binop[] = "=<>+-*/%&|^"; const char binop[] = "=<>+-*/%&|^";
@ -94,7 +97,8 @@ static std::string generateExpression2_Cond(const uint8_t *data, size_t dataSize
} }
static std::string functionStart() { static std::string functionStart()
{
static int functionNumber; static int functionNumber;
return "int f" + std::to_string(++functionNumber) + "()\n" return "int f" + std::to_string(++functionNumber) + "()\n"
"{\n"; "{\n";
@ -112,8 +116,7 @@ static std::string generateExpression2_conditionalCode(const std::string &indent
else else
code << indent << "{\n"; code << indent << "{\n";
for (int line = 0; line < 4 || indent.empty(); ++line) for (int line = 0; line < 4 || indent.empty(); ++line) {
{
bool done = false; bool done = false;
const int type1 = getValue(data, dataSize, 8, &done); const int type1 = getValue(data, dataSize, 8, &done);
if (done) if (done)
@ -154,7 +157,8 @@ static std::string generateExpression2_conditionalCode(const std::string &indent
return code.str(); return code.str();
} }
std::string generateCode2(const uint8_t *data, size_t dataSize) { std::string generateCode2(const uint8_t *data, size_t dataSize)
{
std::ostringstream code; std::ostringstream code;
// create global constants // create global constants

2
runastyle
View File

@ -52,6 +52,8 @@ formatCplusplusRecursive "gui/test/*.cpp"
formatCplusplusRecursive "gui/test/*.h" formatCplusplusRecursive "gui/test/*.h"
formatCplusplus "lib/*.cpp" formatCplusplus "lib/*.cpp"
formatCplusplus "lib/*.h" formatCplusplus "lib/*.h"
formatCplusplus "oss-fuzz/*.cpp"
formatCplusplus "oss-fuzz/*.h"
formatCplusplus "test/*.cpp" formatCplusplus "test/*.cpp"
formatCplusplus "test/cfg/*.c" formatCplusplus "test/cfg/*.c"
formatCplusplus "test/cfg/*.cpp" formatCplusplus "test/cfg/*.cpp"