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detect version downgrade attacks in the client crypto setup

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This commit is contained in:
Marten Seemann 2017-01-04 16:42:13 +07:00
parent b52204322f
commit db09de621c
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GPG key ID: 3603F40B121FCDEA
6 changed files with 102 additions and 14 deletions
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8
client_test.go
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@ -5,8 +5,10 @@ import (
"encoding/binary"
"errors"
"net"
"reflect"
"runtime"
"time"
"unsafe"
"github.com/lucas-clemente/quic-go/protocol"
"github.com/lucas-clemente/quic-go/qerr"
@ -44,11 +46,12 @@ var _ = Describe("Client", func() {
Expect(err).NotTo(HaveOccurred())
}
It("sets the correct hostname for new clients", func() {
It("creates a new client", func() {
var err error
client, err = NewClient("quic.clemente.io:1337", nil, nil)
Expect(err).ToNot(HaveOccurred())
Expect(client.hostname).To(Equal("quic.clemente.io"))
Expect(*(*[]protocol.VersionNumber)(unsafe.Pointer(reflect.ValueOf(client.session.(*Session).cryptoSetup).Elem().FieldByName("negotiatedVersions").UnsafeAddr()))).To(BeNil())
})
It("errors on invalid public header", func() {
@ -95,7 +98,7 @@ var _ = Describe("Client", func() {
startUDPConn()
client.session = nil
client.hostname = "hostname"
err := client.createNewSession()
err := client.createNewSession(nil)
Expect(err).ToNot(HaveOccurred())
Expect(client.session).ToNot(BeNil())
Expect(client.session.(*Session).connectionID).To(Equal(client.connectionID))
@ -217,6 +220,7 @@ var _ = Describe("Client", func() {
Expect(err).ToNot(HaveOccurred())
// it didn't pass the version negoation packet to the session (since it has no payload)
Expect(session.packetCount).To(BeZero())
Expect(*(*[]protocol.VersionNumber)(unsafe.Pointer(reflect.ValueOf(client.session.(*Session).cryptoSetup).Elem().FieldByName("negotiatedVersions").UnsafeAddr()))).To(Equal([]protocol.VersionNumber{35}))
err = client.Close(nil)
Expect(err).ToNot(HaveOccurred())