add fuzzing

Author: kkaefer

.gitignore

@@ -1,2 +1,4 @@
 *.o
-/color
+/test
+/fuzz
+/output

Makefile

@@ -1,14 +1,20 @@
-CXXFLAGS = -std=c++11 -Wall -Wextra -Wpedantic -Weverything -Wno-c++98-compat -Wno-missing-prototypes -Wno-padded -Wno-unused-parameter
+CXXFLAGS = -std=c++11 -Wall -Wextra -Wpedantic -Wno-unused-parameter
 
 build: test
 
 test: csscolorparser.o test.o
 	$(CXX) $(CXXFLAGS) -o $@ $^
 
+fuzz: csscolorparser.o fuzz.o
+	afl-clang-fast++ $(CXXFLAGS) -o $@ $^
+
+fuzz.o: fuzz.cpp
+	afl-clang-fast++ $(CXXFLAGS) -c -o $@ $^
+
 %.o: %.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $^
 
 clean:
-	rm -rf *.o test
+	rm -rf *.o test fuzz
 
 .PHONY: clean

fuzz.cpp

@@ -0,0 +1,13 @@
+#include "csscolorparser.hpp"
+
+#include <iostream>
+#include <istream>
+
+int main(int argc, char* argv[]) {
+    while (__AFL_LOOP(1000)) {
+        // Pass stdin to the function.
+        std::cin >> std::noskipws;
+        CSSColorParser::parse({ std::istream_iterator<char>(std::cin), std::istream_iterator<char>() });
+    }
+    return 0;
+}

fuzz.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+
+make fuzz
+afl-fuzz -i input -o output -- ./fuzz

input/a

@@ -0,0 +1 @@
+rgba(255, 128, 12, 0.5)

input/b

@@ -0,0 +1 @@
+#fff

input/c

@@ -0,0 +1 @@
+#ff0011

input/d

@@ -0,0 +1 @@
+slateblue

input/e

@@ -0,0 +1 @@
+ffffff

input/f

@@ -0,0 +1 @@
+hsla(900, 15%, 90%, 0.5)