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moby--moby/cmd/dockerd/hack/malformed_host_override_test.go

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// +build !windows
package hack
import (
"bytes"
"io"
"net"
"strings"
"testing"
)
type bufConn struct {
net.Conn
buf *bytes.Buffer
}
func (bc *bufConn) Read(b []byte) (int, error) {
return bc.buf.Read(b)
}
func TestHeaderOverrideHack(t *testing.T) {
tests := [][2][]byte{
{
[]byte("GET /foo\nHost: /var/run/docker.sock\nUser-Agent: Docker\r\n\r\n"),
[]byte("GET /foo\nHost: \r\nConnection: close\r\nUser-Agent: Docker\r\n\r\n"),
},
{
[]byte("GET /foo\nHost: /var/run/docker.sock\nUser-Agent: Docker\nFoo: Bar\r\n"),
[]byte("GET /foo\nHost: \r\nConnection: close\r\nUser-Agent: Docker\nFoo: Bar\r\n"),
},
{
[]byte("GET /foo\nHost: /var/run/docker.sock\nUser-Agent: Docker\r\n\r\ntest something!"),
[]byte("GET /foo\nHost: \r\nConnection: close\r\nUser-Agent: Docker\r\n\r\ntest something!"),
},
{
[]byte("GET /foo\nHost: /var/run/docker.sock\nUser-Agent: Docker\r\n\r\ntest something! " + strings.Repeat("test", 15000)),
[]byte("GET /foo\nHost: \r\nConnection: close\r\nUser-Agent: Docker\r\n\r\ntest something! " + strings.Repeat("test", 15000)),
},
{
[]byte("GET /foo\nFoo: Bar\nHost: /var/run/docker.sock\nUser-Agent: Docker\r\n\r\n"),
[]byte("GET /foo\nFoo: Bar\nHost: /var/run/docker.sock\nUser-Agent: Docker\r\n\r\n"),
},
}
// Test for https://github.com/docker/docker/issues/23045
h0 := "GET /foo\nUser-Agent: Docker\r\n\r\n"
h0 = h0 + strings.Repeat("a", 4096-len(h0)-1) + "\n"
tests = append(tests, [2][]byte{[]byte(h0), []byte(h0)})
for _, pair := range tests {
read := make([]byte, 4096)
client := &bufConn{
buf: bytes.NewBuffer(pair[0]),
}
l := MalformedHostHeaderOverrideConn{client, true}
n, err := l.Read(read)
if err != nil && err != io.EOF {
t.Fatalf("read: %d - %d, err: %v\n%s", n, len(pair[0]), err, string(read[:n]))
}
if !bytes.Equal(read[:n], pair[1][:n]) {
t.Fatalf("\n%s\n%s\n", read[:n], pair[1][:n])
}
}
}
func BenchmarkWithHack(b *testing.B) {
client, srv := net.Pipe()
done := make(chan struct{})
req := []byte("GET /foo\nHost: /var/run/docker.sock\nUser-Agent: Docker\n")
read := make([]byte, 4096)
b.SetBytes(int64(len(req) * 30))
l := MalformedHostHeaderOverrideConn{client, true}
go func() {
for {
if _, err := srv.Write(req); err != nil {
srv.Close()
break
}
l.first = true // make sure each subsequent run uses the hack parsing
}
close(done)
}()
for i := 0; i < b.N; i++ {
for i := 0; i < 30; i++ {
if n, err := l.Read(read); err != nil && err != io.EOF {
b.Fatalf("read: %d - %d, err: %v\n%s", n, len(req), err, string(read[:n]))
}
}
}
l.Close()
<-done
}
func BenchmarkNoHack(b *testing.B) {
client, srv := net.Pipe()
done := make(chan struct{})
req := []byte("GET /foo\nHost: /var/run/docker.sock\nUser-Agent: Docker\n")
read := make([]byte, 4096)
b.SetBytes(int64(len(req) * 30))
go func() {
for {
if _, err := srv.Write(req); err != nil {
srv.Close()
break
}
}
close(done)
}()
for i := 0; i < b.N; i++ {
for i := 0; i < 30; i++ {
if _, err := client.Read(read); err != nil && err != io.EOF {
b.Fatal(err)
}
}
}
client.Close()
<-done
}