1// Copyright 2011 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package packet
6
7import (
8	"bytes"
9	"encoding/hex"
10	"io"
11	"testing"
12)
13
14// Test packet.Read error handling in OpaquePacket.Parse,
15// which attempts to re-read an OpaquePacket as a supported
16// Packet type.
17func TestOpaqueParseReason(t *testing.T) {
18	buf, err := hex.DecodeString(UnsupportedKeyHex)
19	if err != nil {
20		t.Fatal(err)
21	}
22	or := NewOpaqueReader(bytes.NewBuffer(buf))
23	count := 0
24	badPackets := 0
25	var uid *UserId
26	for {
27		op, err := or.Next()
28		if err == io.EOF {
29			break
30		} else if err != nil {
31			t.Errorf("#%d: opaque read error: %v", count, err)
32			break
33		}
34		// try to parse opaque packet
35		p, _ := op.Parse()
36		switch pkt := p.(type) {
37		case *UserId:
38			uid = pkt
39		case *OpaquePacket:
40			// If an OpaquePacket can't re-parse, packet.Read
41			// certainly had its reasons.
42			if pkt.Reason == nil {
43				t.Errorf("#%d: opaque packet, no reason", count)
44			} else {
45				badPackets++
46			}
47		}
48		count++
49	}
50
51	const expectedBad = 3
52	// Test post-conditions, make sure we actually parsed packets as expected.
53	if badPackets != expectedBad {
54		t.Errorf("unexpected # unparseable packets: %d (want %d)", badPackets, expectedBad)
55	}
56	if uid == nil {
57		t.Errorf("failed to find expected UID in unsupported keyring")
58	} else if uid.Id != "Armin M. Warda <warda@nephilim.ruhr.de>" {
59		t.Errorf("unexpected UID: %v", uid.Id)
60	}
61}
62
63// This key material has public key and signature packet versions modified to
64// an unsupported value (1), so that trying to parse the OpaquePacket to
65// a typed packet will get an error. It also contains a GnuPG trust packet.
66// (Created with: od -An -t x1 pubring.gpg | xargs | sed 's/ //g')
67const UnsupportedKeyHex = `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`
68