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package tlvparse
import (
"encoding/binary"
"testing"
"github.com/pires/go-proxyproto"
)
var awsTestCases = []struct {
name string
raw []byte
types []proxyproto.PP2Type
valid func(*testing.T, string, []proxyproto.TLV)
}{
{
name: "VPCE example",
// https://github.com/aws/elastic-load-balancing-tools/blob/c8eee30ab991ab4c57dc37d1c58f09f67bd534aa/proprot/tst/com/amazonaws/proprot/Compatibility_AwsNetworkLoadBalancerTest.java#L41..L67
raw: []byte{
0x0d, 0x0a, 0x0d, 0x0a, /* Start of Sig */
0x00, 0x0d, 0x0a, 0x51,
0x55, 0x49, 0x54, 0x0a, /* End of Sig */
0x21, 0x11, 0x00, 0x54, /* ver_cmd, fam and len */
0xac, 0x1f, 0x07, 0x71, /* Caller src ip */
0xac, 0x1f, 0x0a, 0x1f, /* Endpoint dst ip */
0xc8, 0xf2, 0x00, 0x50, /* Proxy src port & dst port */
0x03, 0x00, 0x04, 0xe8, /* CRC TLV start */
0xd6, 0x89, 0x2d, 0xea, /* CRC TLV cont, VPCE id TLV start */
0x00, 0x17, 0x01, 0x76,
0x70, 0x63, 0x65, 0x2d,
0x30, 0x38, 0x64, 0x32,
0x62, 0x66, 0x31, 0x35,
0x66, 0x61, 0x63, 0x35,
0x30, 0x30, 0x31, 0x63,
0x39, 0x04, 0x00, 0x24, /* VPCE id TLV end, NOOP TLV start*/
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, /* NOOP TLV end */
},
types: []proxyproto.PP2Type{proxyproto.PP2_TYPE_CRC32C, PP2_TYPE_AWS, proxyproto.PP2_TYPE_NOOP},
valid: func(t *testing.T, name string, tlvs []proxyproto.TLV) {
if !IsAWSVPCEndpointID(tlvs[1]) {
t.Fatalf("TestParseV2TLV %s: Expected tlvs[1] to be an AWSVPCEndpointID type", name)
}
vpce := "vpce-08d2bf15fac5001c9"
if vpca, err := AWSVPCEndpointID(tlvs[1]); err != nil {
t.Fatalf("TestParseV2TLV %s: Unexpected error when parsing AWSVPCEndpointID", name)
} else if vpca != vpce {
t.Fatalf("TestParseV2TLV %s: Unexpected VPC ID from tlvs[1] expected %#v, actual %#v", name, vpce, vpca)
}
if vpca := FindAWSVPCEndpointID(tlvs); vpca == "" {
t.Fatalf("TestParseV2TLV %s: Expected to find AWSVPCEndpointID %#v in TLVs", name, vpce)
} else if vpca != vpce {
t.Fatalf("TestParseV2TLV %s: Unexpected AWSVPCEndpointID from header expected %#v, actual %#v", name, vpce, vpca)
}
},
},
{
name: "VPCE capture",
raw: []byte{
0x0d, 0x0a, 0x0d, 0x0a,
0x00, 0x0d, 0x0a, 0x51,
0x55, 0x49, 0x54, 0x0a,
0x21, 0x11, 0x00, 0x54,
0xc0, 0xa8, 0x2c, 0x0a,
0xc0, 0xa8, 0x2c, 0x07,
0xcc, 0x3e, 0x24, 0x1b,
0x03, 0x00, 0x04, 0xb9,
0x28, 0x6f, 0xa6, 0xea,
0x00, 0x17, 0x01, 0x76,
0x70, 0x63, 0x65, 0x2d,
0x30, 0x30, 0x65, 0x61,
0x66, 0x63, 0x34, 0x35,
0x38, 0x65, 0x63, 0x39,
0x37, 0x62, 0x38, 0x33,
0x33, 0x04, 0x00, 0x24,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
},
types: []proxyproto.PP2Type{proxyproto.PP2_TYPE_CRC32C, PP2_TYPE_AWS, proxyproto.PP2_TYPE_NOOP},
valid: func(t *testing.T, name string, tlvs []proxyproto.TLV) {
if !IsAWSVPCEndpointID(tlvs[1]) {
t.Fatalf("TestParseV2TLV %s: Expected tlvs[1] to be an AWS VPC endpoint ID type", name)
}
vpce := "vpce-00eafc458ec97b833"
if vpca, err := AWSVPCEndpointID(tlvs[1]); err != nil {
t.Fatalf("TestParseV2TLV %s: Unexpected error when parsing AWS VPC ID", name)
} else if vpca != vpce {
t.Fatalf("TestParseV2TLV %s: Unexpected VPC ID from tlvs[1] expected %#v, actual %#v", name, vpce, vpca)
}
if vpca := FindAWSVPCEndpointID(tlvs); vpca == "" {
t.Fatalf("TestParseV2TLV %s: Expected to find VPC ID %#v in TLVs", name, vpce)
} else if vpca != vpce {
t.Fatalf("TestParseV2TLV %s: Unexpected VPC ID from header expected %#v, actual %#v", name, vpce, vpca)
}
},
},
}
func TestV2TLVAWSVPCEBadChars(t *testing.T) {
badVPCE := "vcpe-!?***&&&&&&&"
rawTLVs := vpceTLV(badVPCE)
tlvs, err := proxyproto.SplitTLVs(rawTLVs)
if len(tlvs) != 1 {
t.Fatalf("TestV2TLVAWSVPCEBadChars: unexpected TLV length expected: %#v, actual: %#v", 1, tlvs)
}
if err != nil {
t.Fatalf("TestV2TLVAWSVPCEBadChars: unexpected TLV parsing error %#v", err)
}
_, err = AWSVPCEndpointID(tlvs[0])
if err != proxyproto.ErrMalformedTLV {
t.Fatalf("TestV2TLVAWSVPCEBadChars: unexpected error actual: %#v", err)
}
if FindAWSVPCEndpointID(tlvs) != "" {
t.Fatal("TestV2TLVAWSVPCEBadChars: AWSVPCEndpointID unexpectedly found")
}
rawTLVs = vpceTLV("")
tlvs, err = proxyproto.SplitTLVs(rawTLVs)
if len(tlvs) != 1 {
t.Fatalf("TestV2TLVAWSVPCEBadChars: unexpected TLV length expected: %#v, actual: %#v", 1, tlvs)
}
if err != nil {
t.Fatalf("TestV2TLVAWSVPCEBadChars: unexpected TLV parsing error %#v", err)
}
parsedVPCE, err := AWSVPCEndpointID(tlvs[0])
if err != nil {
t.Fatalf("TestV2TLVAWSVPCEBadChars: unexpected error actual: %#v", err)
}
if parsedVPCE != "" {
t.Fatalf("TestV2TLVAWSVPCEBadChars: found non-empty vpce, actual: %#v", parsedVPCE)
}
parsedVPCE = FindAWSVPCEndpointID(tlvs)
if parsedVPCE != "" {
t.Fatal("TestV2TLVAWSVPCEBadChars: AWSVPECID unexpectedly found")
}
}
func TestParseAWSVPCEndpointIDTLVs(t *testing.T) {
for _, tc := range awsTestCases {
t.Run(tc.name, func(t *testing.T) {
tlvs := checkTLVs(t, tc.name, tc.raw, tc.types)
tc.valid(t, tc.name, tlvs)
})
}
}
func TestV2TLVAWSUnknownSubtype(t *testing.T) {
vpce := "vpce-abc1234"
rawTLVs := vpceTLV(vpce)
tlvs, err := proxyproto.SplitTLVs(rawTLVs)
if len(tlvs) != 1 {
t.Fatalf("TestV2TLVAWSUnknownSubtype: unexpected TLV length expected: %#v, actual: %#v", 1, tlvs)
}
if err != nil {
t.Fatalf("TestV2TLVAWSUnknownSubtype: unexpected TLV parsing error %#v", err)
}
avpce, err := AWSVPCEndpointID(tlvs[0])
if err != nil {
t.Fatalf("TestV2TLVAWSUnknownSubtype: unexpected AWSVPCEndpointID error actual: %#v", err)
}
if avpce != vpce {
t.Fatalf("TestV2TLVAWSUnknownSubtype: unexpected vpce value expected: %#v, actual: %#v", vpce, avpce)
}
avpce = FindAWSVPCEndpointID(tlvs)
if avpce == "" {
t.Fatal("TestV2TLVAWSUnknownSubtype: AWSVPCEndpointID unexpectedly missing")
}
if avpce != vpce {
t.Fatalf("TestV2TLVAWSUnknownSubtype: unexpected AWSVPCEndpointID value expected: %#v, actual: %#v", vpce, avpce)
}
subtypeIndex := 3
// Sanity check
if rawTLVs[subtypeIndex] != PP2_SUBTYPE_AWS_VPCE_ID {
t.Fatalf("TestV2TLVAWSUnknownSubtype: unexpected subtype expected %x, actual %x", PP2_SUBTYPE_AWS_VPCE_ID, rawTLVs[subtypeIndex])
}
rawTLVs[subtypeIndex] = PP2_SUBTYPE_AWS_VPCE_ID + 1
tlvs, err = proxyproto.SplitTLVs(rawTLVs)
if len(tlvs) != 1 {
t.Fatalf("TestV2TLVAWSUnknownSubtype: unexpected TLV length expected: %#v, actual: %#v", 1, tlvs)
}
if err != nil {
t.Fatalf("TestV2TLVAWSUnknownSubtype: unexpected TLV parsing error %#v", err)
}
if IsAWSVPCEndpointID(tlvs[0]) {
t.Fatalf("TestV2TLVAWSUnknownSubtype: AWSVPCEType() unexpectedly true after changing subtype")
}
_, err = AWSVPCEndpointID(tlvs[0])
if err != proxyproto.ErrIncompatibleTLV {
t.Fatalf("TestV2TLVAWSUnknownSubtype: unexpected AWSVPCEndpointID error expected %#v, actual: %#v", proxyproto.ErrIncompatibleTLV, err)
}
if FindAWSVPCEndpointID(tlvs) != "" {
t.Fatal("TestV2TLVAWSUnknownSubtype: AWSVPCEndpointID unexpectedly exists despite invalid subtype")
}
}
func vpceTLV(vpce string) []byte {
tlv := []byte{
PP2_TYPE_AWS, 0x00, 0x00, PP2_SUBTYPE_AWS_VPCE_ID,
}
binary.BigEndian.PutUint16(tlv[1:3], uint16(len(vpce)+1)) // +1 for subtype
return append(tlv, []byte(vpce)...)
}
|
