first attempt for fuzzing

fuzzing/packet/gen_initial_corpus.go

+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+)
+
+func main() {
+	tests := []struct {
+		testNum  int
+		input    []byte
+		wantFail bool
+		expected interface{}
+	}{
+		{
+			// Proper packet
+			testNum: 1,
+			input: []byte{
+				255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // Marker
+				0, 19, // Length
+				4, // Type = Keepalive
+
+			},
+			wantFail: false,
+		},
+		{
+			// Invalid marker
+			testNum: 2,
+			input: []byte{
+				1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, // Marker
+				0, 19, // Length
+				4, // Type = Keepalive
+
+			},
+			wantFail: true,
+		},
+		{
+			// Proper NOTIFICATION packet
+			testNum: 3,
+			input: []byte{
+				255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // Marker
+				0, 21, // Length
+				3,    // Type = Notification
+				1, 1, // Message Header Error, Connection Not Synchronized.
+			},
+			wantFail: false,
+		},
+		{
+			// Proper OPEN packet
+			testNum: 4,
+			input: []byte{
+				255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // Marker
+				0, 29, // Length
+				1,      // Type = Open
+				4,      // Version
+				0, 200, //ASN,
+				0, 15, // Holdtime
+				10, 20, 30, 40, // BGP Identifier
+				0, // Opt Parm Len
+			},
+			wantFail: false,
+		},
+		{
+			// Incomplete OPEN packet
+			testNum: 5,
+			input: []byte{
+				255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // Marker
+				0, 28, // Length
+				1,      // Type = Open
+				4,      // Version
+				0, 200, //ASN,
+				0, 15, // Holdtime
+				0, 0, 0, 100, // BGP Identifier
+			},
+			wantFail: true,
+		},
+		{
+			testNum: 6,
+			input: []byte{
+				255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // Marker
+				0, 28, // Length
+				2,                               // Type = Update
+				0, 5, 8, 10, 16, 192, 168, 0, 0, // 2 withdraws
+			},
+			wantFail: false,
+		},
+		{
+			testNum: 7,
+			input: []byte{
+				255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // Marker
+				0, 28, // Length
+				5,                               // Type = Invalid
+				0, 5, 8, 10, 16, 192, 168, 0, 0, // Some more stuff
+			},
+			wantFail: true,
+		},
+	}
+	for i, t := range tests {
+		f, err := os.Create(fmt.Sprintf("corpus/%v.bytes", i))
+		if err != nil {
+			log.Fatalf(err.Error())
+		}
+		f.Write(t.input)
+		f.Close()
+	}
+}