switching to plugins

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

walker/walkers/readFuzz/readFuzz.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"time"
+
+	"git.thisco.de/vbatts/fuzz-walker/walker"
+)
+
+func NewFuzzer() (walker.Fuzzer, error) {
+	return &myFuzzer{}, nil
+}
+
+type myFuzzer struct{}
+
+func (mf myFuzzer) Name() string {
+	return "readFuzz"
+}
+
+func (mf myFuzzer) Func(path string, info os.FileInfo, timeout time.Duration) error {
+	c1 := make(chan error, 1)
+	go func() {
+		fd, err := os.Open(path)
+		if err != nil {
+			c1 <- err
+		}
+		defer fd.Close()
+		_, err = io.Copy(ioutil.Discard, fd)
+		c1 <- err
+	}()
+
+	select {
+	case err := <-c1:
+		return err
+	case <-time.After(timeout):
+		return fmt.Errorf("timeout reached")
+	}
+	return nil
+}